diff --git a/.azure-pipelines/ci.yml b/.azure-pipelines/ci.yml
index b5b2765e43844f..7490dd947e1504 100644
--- a/.azure-pipelines/ci.yml
+++ b/.azure-pipelines/ci.yml
@@ -1,11 +1,11 @@
-trigger: ['main', '3.12', '3.11', '3.10', '3.9', '3.8', '3.7']
+trigger: ['main', '3.13', '3.12', '3.11', '3.10', '3.9', '3.8']
 
 jobs:
 - job: Prebuild
   displayName: Pre-build checks
 
   pool:
-    vmImage: ubuntu-22.04
+    vmImage: ubuntu-24.04
 
   steps:
   - template: ./prebuild-checks.yml
diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 6f8fe005621c88..ada5fb0fe64dc2 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -2,11 +2,11 @@ FROM docker.io/library/fedora:40
 
 ENV CC=clang
 
-ENV WASI_SDK_VERSION=21
+ENV WASI_SDK_VERSION=24
 ENV WASI_SDK_PATH=/opt/wasi-sdk
 
 ENV WASMTIME_HOME=/opt/wasmtime
-ENV WASMTIME_VERSION=18.0.3
+ENV WASMTIME_VERSION=22.0.0
 ENV WASMTIME_CPU_ARCH=x86_64
 
 RUN dnf -y --nodocs --setopt=install_weak_deps=False install /usr/bin/{blurb,clang,curl,git,ln,tar,xz} 'dnf-command(builddep)' && \
@@ -14,7 +14,7 @@ RUN dnf -y --nodocs --setopt=install_weak_deps=False install /usr/bin/{blurb,cla
     dnf -y clean all
 
 RUN mkdir ${WASI_SDK_PATH} && \
-    curl --location https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-linux.tar.gz | \
+    curl --location https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz | \
     tar --strip-components 1 --directory ${WASI_SDK_PATH} --extract --gunzip
 
 RUN mkdir --parents ${WASMTIME_HOME} && \
diff --git a/.gitattributes b/.gitattributes
index 5b81d2cb3c90e9..2f5a030981fb94 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -27,8 +27,6 @@ Lib/test/cjkencodings/*                    noeol
 Lib/test/tokenizedata/coding20731.py       noeol
 Lib/test/decimaltestdata/*.decTest         noeol
 Lib/test/test_email/data/*.txt             noeol
-Lib/test/test_importlib/resources/data01/*           noeol
-Lib/test/test_importlib/resources/namespacedata01/*  noeol
 Lib/test/xmltestdata/*                     noeol
 
 # Shell scripts should have LF even on Windows because of Cygwin
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 1f5f7e57dc4859..4ffbb428bc381d 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -29,19 +29,19 @@ Objects/type*                 @markshannon
 Objects/codeobject.c          @markshannon
 Objects/frameobject.c         @markshannon
 Objects/call.c                @markshannon
-Python/ceval*.c               @markshannon @gvanrossum
-Python/ceval*.h               @markshannon @gvanrossum
+Python/ceval*.c               @markshannon
+Python/ceval*.h               @markshannon
 Python/compile.c              @markshannon @iritkatriel
 Python/assemble.c             @markshannon @iritkatriel
 Python/flowgraph.c            @markshannon @iritkatriel
 Python/ast_opt.c              @isidentical
-Python/bytecodes.c            @markshannon @gvanrossum
-Python/optimizer*.c           @markshannon @gvanrossum
+Python/bytecodes.c            @markshannon
+Python/optimizer*.c           @markshannon
 Python/optimizer_analysis.c   @Fidget-Spinner
 Python/optimizer_bytecodes.c  @Fidget-Spinner
 Lib/test/test_patma.py        @brandtbucher
 Lib/test/test_type_*.py       @JelleZijlstra
-Lib/test/test_capi/test_misc.py  @markshannon @gvanrossum
+Lib/test/test_capi/test_misc.py  @markshannon
 Tools/c-analyzer/             @ericsnowcurrently
 
 # dbm
@@ -150,7 +150,7 @@ Include/internal/pycore_time.h  @pganssle @abalkin
 /Lib/test/test_tokenize.py    @pablogsal @lysnikolaou
 
 # Code generator
-/Tools/cases_generator/        @gvanrossum
+/Tools/cases_generator/        @markshannon
 
 # AST
 Python/ast.c                  @isidentical
@@ -205,6 +205,7 @@ Doc/c-api/stable.rst          @encukou
 **/*ensurepip*                @pfmoore @pradyunsg
 
 **/*idlelib*                  @terryjreedy
+/Doc/library/idle.rst         @terryjreedy
 
 **/*typing*                   @JelleZijlstra @AlexWaygood
 
@@ -240,7 +241,7 @@ Doc/howto/clinic.rst          @erlend-aasland
 **/*interpreteridobject.*     @ericsnowcurrently
 **/*crossinterp*              @ericsnowcurrently
 Lib/test/support/interpreters/  @ericsnowcurrently
-Modules/_xx*interp*module.c   @ericsnowcurrently
+Modules/_interp*module.c      @ericsnowcurrently
 Lib/test/test_interpreters/   @ericsnowcurrently
 
 # Android
@@ -266,3 +267,7 @@ Lib/test/test_interpreters/   @ericsnowcurrently
 # Config Parser
 Lib/configparser.py           @jaraco
 Lib/test/test_configparser.py @jaraco
+
+# Colorize
+Lib/_colorize.py              @hugovk
+Lib/test/test__colorize.py    @hugovk
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1b2677ff6fe889..05a2382fccbe25 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,26 +1,15 @@
 name: Tests
 
-# gh-84728: "paths-ignore" is not used to skip documentation-only PRs, because
-# it prevents to mark a job as mandatory. A PR cannot be merged if a job is
-# mandatory but not scheduled because of "paths-ignore".
 on:
   workflow_dispatch:
   push:
     branches:
     - 'main'
-    - '3.12'
-    - '3.11'
-    - '3.10'
-    - '3.9'
-    - '3.8'
+    - '3.*'
   pull_request:
     branches:
     - 'main'
-    - '3.12'
-    - '3.11'
-    - '3.10'
-    - '3.9'
-    - '3.8'
+    - '3.*'
 
 permissions:
   contents: read
@@ -29,105 +18,133 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}-reusable
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   check_source:
-    name: 'Check for source changes'
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    outputs:
-      run-docs: ${{ steps.docs-changes.outputs.run-docs || false }}
-      run_tests: ${{ steps.check.outputs.run_tests }}
-      run_hypothesis: ${{ steps.check.outputs.run_hypothesis }}
-      run_cifuzz: ${{ steps.check.outputs.run_cifuzz }}
-      config_hash: ${{ steps.config_hash.outputs.hash }}
+    name: Change detection
+    # To use boolean outputs from this job, parse them as JSON.
+    # Here's some examples:
+    #
+    #   if: fromJSON(needs.check_source.outputs.run-docs)
+    #
+    #   ${{
+    #        fromJSON(needs.check_source.outputs.run_tests)
+    #        && 'truthy-branch'
+    #        || 'falsy-branch'
+    #   }}
+    #
+    uses: ./.github/workflows/reusable-change-detection.yml
+
+  check-docs:
+    name: Docs
+    needs: check_source
+    if: fromJSON(needs.check_source.outputs.run-docs)
+    uses: ./.github/workflows/reusable-docs.yml
+
+  check_abi:
+    name: 'Check if the ABI has changed'
+    runs-on: ubuntu-22.04  # 24.04 causes spurious errors
+    needs: check_source
+    if: needs.check_source.outputs.run_tests == 'true'
     steps:
       - uses: actions/checkout@v4
-      - name: Check for source changes
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@v5
+      - name: Install dependencies
+        run: |
+            sudo ./.github/workflows/posix-deps-apt.sh
+            sudo apt-get install -yq abigail-tools
+      - name: Build CPython
+        env:
+          CFLAGS: -g3 -O0
+        run: |
+          # Build Python with the libpython dynamic library
+          ./configure --enable-shared
+          make -j4
+      - name: Check for changes in the ABI
         id: check
         run: |
-          if [ -z "$GITHUB_BASE_REF" ]; then
-            echo "run_tests=true" >> $GITHUB_OUTPUT
-          else
-            git fetch origin $GITHUB_BASE_REF --depth=1
-            # git diff "origin/$GITHUB_BASE_REF..." (3 dots) may be more
-            # reliable than git diff "origin/$GITHUB_BASE_REF.." (2 dots),
-            # but it requires to download more commits (this job uses
-            # "git fetch --depth=1").
-            #
-            # git diff "origin/$GITHUB_BASE_REF..." (3 dots) works with Git
-            # 2.26, but Git 2.28 is stricter and fails with "no merge base".
-            #
-            # git diff "origin/$GITHUB_BASE_REF.." (2 dots) should be enough on
-            # GitHub, since GitHub starts by merging origin/$GITHUB_BASE_REF
-            # into the PR branch anyway.
-            #
-            # https://github.com/python/core-workflow/issues/373
-            git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qvE '(\.rst$|^Doc|^Misc|^\.pre-commit-config\.yaml$|\.ruff\.toml$)' && echo "run_tests=true" >> $GITHUB_OUTPUT || true
-          fi
-
-          # Check if we should run hypothesis tests
-          GIT_BRANCH=${GITHUB_BASE_REF:-${GITHUB_REF#refs/heads/}}
-          echo $GIT_BRANCH
-          if $(echo "$GIT_BRANCH" | grep -q -w '3\.\(8\|9\|10\|11\)'); then
-            echo "Branch too old for hypothesis tests"
-            echo "run_hypothesis=false" >> $GITHUB_OUTPUT
-          else
-            echo "Run hypothesis tests"
-            echo "run_hypothesis=true" >> $GITHUB_OUTPUT
-          fi
-
-          # oss-fuzz maintains a configuration for fuzzing the main branch of
-          # CPython, so CIFuzz should be run only for code that is likely to be
-          # merged into the main branch; compatibility with older branches may
-          # be broken.
-          FUZZ_RELEVANT_FILES='(\.c$|\.h$|\.cpp$|^configure$|^\.github/workflows/build\.yml$|^Modules/_xxtestfuzz)'
-          if [ "$GITHUB_BASE_REF" = "main" ] && [ "$(git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qE $FUZZ_RELEVANT_FILES; echo $?)" -eq 0 ]; then
-            # The tests are pretty slow so they are executed only for PRs
-            # changing relevant files.
-            echo "Run CIFuzz tests"
-            echo "run_cifuzz=true" >> $GITHUB_OUTPUT
-          else
-            echo "Branch too old for CIFuzz tests; or no C files were changed"
-            echo "run_cifuzz=false" >> $GITHUB_OUTPUT
+          if ! make check-abidump; then
+            echo "Generated ABI file is not up to date."
+            echo "Please add the release manager of this branch as a reviewer of this PR."
+            echo ""
+            echo "The up to date ABI file should be attached to this build as an artifact."
+            echo ""
+            echo "To learn more about this check: https://devguide.python.org/getting-started/setup-building/index.html#regenerate-the-abi-dump"
+            echo ""
+            exit 1
           fi
-      - name: Compute hash for config cache key
-        id: config_hash
+      - name: Generate updated ABI files
+        if: ${{ failure() && steps.check.conclusion == 'failure' }}
         run: |
-          echo "hash=${{ hashFiles('configure', 'configure.ac', '.github/workflows/build.yml') }}" >> $GITHUB_OUTPUT
-      - name: Get a list of the changed documentation-related files
-        if: github.event_name == 'pull_request'
-        id: changed-docs-files
-        uses: Ana06/get-changed-files@v2.3.0
+          make regen-abidump
+      - uses: actions/upload-artifact@v4
+        name: Publish updated ABI files
+        if: ${{ failure() && steps.check.conclusion == 'failure' }}
         with:
-          filter: |
-            Doc/**
-            Misc/**
-            .github/workflows/reusable-docs.yml
-          format: csv  # works for paths with spaces
-      - name: Check for docs changes
-        if: >-
-          github.event_name == 'pull_request'
-          && steps.changed-docs-files.outputs.added_modified_renamed != ''
-        id: docs-changes
-        run: |
-          echo "run-docs=true" >> "${GITHUB_OUTPUT}"
+          name: abi-data
+          path: ./Doc/data/*.abi
 
-  check-docs:
-    name: Docs
+  check_autoconf_regen:
+    name: 'Check if Autoconf files are up to date'
+    # Don't use ubuntu-latest but a specific version to make the job
+    # reproducible: to get the same tools versions (autoconf, aclocal, ...)
+    runs-on: ubuntu-24.04
+    container:
+      image: ghcr.io/python/autoconf:2024.10.16.11360930377
+    timeout-minutes: 60
     needs: check_source
-    if: fromJSON(needs.check_source.outputs.run-docs)
-    uses: ./.github/workflows/reusable-docs.yml
+    if: needs.check_source.outputs.run_tests == 'true'
+    steps:
+      - name: Install Git
+        run: |
+          apt update && apt install git -yq
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          persist-credentials: false
+      - name: Runner image version
+        run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
+      - name: Check Autoconf and aclocal versions
+        run: |
+          grep "Generated by GNU Autoconf 2.71" configure
+          grep "aclocal 1.16.5" aclocal.m4
+          grep -q "runstatedir" configure
+          grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
+      - name: Regenerate autoconf files
+        # Same command used by Tools/build/regen-configure.sh ($AUTORECONF)
+        run: autoreconf -ivf -Werror
+      - name: Check for changes
+        run: |
+          git add -u
+          changes=$(git status --porcelain)
+          # Check for changes in regenerated files
+          if test -n "$changes"; then
+            echo "Generated files not up to date."
+            echo "Perhaps you forgot to run make regen-configure ;)"
+            echo "configure files must be regenerated with a specific version of autoconf."
+            echo "$changes"
+            echo ""
+            git diff --staged || true
+            exit 1
+          fi
 
   check_generated_files:
     name: 'Check if generated files are up to date'
     # Don't use ubuntu-latest but a specific version to make the job
     # reproducible: to get the same tools versions (autoconf, aclocal, ...)
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: '3.x'
@@ -147,19 +164,10 @@ jobs:
         uses: hendrikmuhs/ccache-action@v1.2
         with:
           save: false
-      - name: Check Autoconf and aclocal versions
-        run: |
-          grep "Generated by GNU Autoconf 2.71" configure
-          grep "aclocal 1.16.5" aclocal.m4
-          grep -q "runstatedir" configure
-          grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
       - name: Configure CPython
         run: |
           # Build Python with the libpython dynamic library
           ./configure --config-cache --with-pydebug --enable-shared
-      - name: Regenerate autoconf files
-        # Same command used by Tools/build/regen-configure.sh ($AUTORECONF)
-        run: autoreconf -ivf -Werror
       - name: Build CPython
         run: |
           make -j4 regen-all
@@ -187,77 +195,113 @@ jobs:
         run: make check-c-globals
 
   build_windows:
-    name: 'Windows'
+    name: >-
+      Windows
+      ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
     needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
-    uses: ./.github/workflows/reusable-windows.yml
-
-  build_windows_free_threading:
-    name: 'Windows (free-threading)'
-    needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
+    if: fromJSON(needs.check_source.outputs.run_tests)
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - windows-latest
+        arch:
+          - x64
+        free-threading:
+          - false
+          - true
+        include:
+          - os: windows-latest # FIXME(diegorusso): change to os: windows-aarch64
+            arch: arm64
+            free-threading: false
+          - os: windows-latest # FIXME(diegorusso): change to os: windows-aarch64
+            arch: arm64
+            free-threading: true
+          - os: windows-latest
+            arch: Win32
+            free-threading: false
     uses: ./.github/workflows/reusable-windows.yml
     with:
-      free-threading: true
+      os: ${{ matrix.os }}
+      arch: ${{ matrix.arch }}
+      free-threading: ${{ matrix.free-threading }}
 
-  build_macos:
-    name: 'macOS'
+  build_windows_msi:
+    name: >-  # ${{ '' } is a hack to nest jobs under the same sidebar category
+      Windows MSI${{ '' }}
     needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
-    uses: ./.github/workflows/reusable-macos.yml
+    if: fromJSON(needs.check_source.outputs.run-win-msi)
+    strategy:
+      matrix:
+        arch:
+        - x86
+        - x64
+        - arm64
+    uses: ./.github/workflows/reusable-windows-msi.yml
     with:
-      config_hash: ${{ needs.check_source.outputs.config_hash }}
-      # macos-14 is M1, macos-13 is Intel
-      os-matrix: '["macos-14", "macos-13"]'
+      arch: ${{ matrix.arch }}
 
-  build_macos_free_threading:
-    name: 'macOS (free-threading)'
+  build_macos:
+    name: >-
+      macOS
+      ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
+    strategy:
+      fail-fast: false
+      matrix:
+        # Cirrus and macos-14 are M1, macos-13 is default GHA Intel.
+        # macOS 13 only runs tests against the GIL-enabled CPython.
+        # Cirrus used for upstream, macos-14 for forks.
+        os:
+        - ghcr.io/cirruslabs/macos-runner:sonoma
+        - macos-14
+        - macos-13
+        is-fork:  # only used for the exclusion trick
+        - ${{ github.repository_owner != 'python' }}
+        free-threading:
+        - false
+        - true
+        exclude:
+        - os: ghcr.io/cirruslabs/macos-runner:sonoma
+          is-fork: true
+        - os: macos-14
+          is-fork: false
+        - os: macos-13
+          free-threading: true
     uses: ./.github/workflows/reusable-macos.yml
     with:
       config_hash: ${{ needs.check_source.outputs.config_hash }}
-      free-threading: true
-      # macos-14-large is Intel with 12 cores (most parallelism)
-      os-matrix: '["macos-14"]'
+      free-threading: ${{ matrix.free-threading }}
+      os: ${{ matrix.os }}
 
   build_ubuntu:
-    name: 'Ubuntu'
-    needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
-    uses: ./.github/workflows/reusable-ubuntu.yml
-    with:
-      config_hash: ${{ needs.check_source.outputs.config_hash }}
-      options: |
-        ../cpython-ro-srcdir/configure \
-          --config-cache \
-          --with-pydebug \
-          --with-openssl=$OPENSSL_DIR
-
-  build_ubuntu_free_threading:
-    name: 'Ubuntu (free-threading)'
+    name: >-
+      Ubuntu
+      ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
+    strategy:
+      matrix:
+        free-threading:
+        - false
+        - true
     uses: ./.github/workflows/reusable-ubuntu.yml
     with:
       config_hash: ${{ needs.check_source.outputs.config_hash }}
-      options: |
-        ../cpython-ro-srcdir/configure \
-          --config-cache \
-          --with-pydebug \
-          --with-openssl=$OPENSSL_DIR \
-          --disable-gil
+      free-threading: ${{ matrix.free-threading }}
 
   build_ubuntu_ssltests:
     name: 'Ubuntu SSL tests with OpenSSL'
-    runs-on: ubuntu-22.04
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     strategy:
       fail-fast: false
       matrix:
-        openssl_ver: [1.1.1w, 3.0.13, 3.1.5, 3.2.1]
+        os: [ubuntu-24.04]
+        openssl_ver: [3.0.15, 3.1.7, 3.2.3, 3.3.2]
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
       MULTISSL_DIR: ${{ github.workspace }}/multissl
@@ -265,6 +309,8 @@ jobs:
       LD_LIBRARY_PATH: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}/lib
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
@@ -286,7 +332,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
+        key: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
@@ -316,15 +362,17 @@ jobs:
 
   test_hypothesis:
     name: "Hypothesis tests on Ubuntu"
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true' && needs.check_source.outputs.run_hypothesis == 'true'
     env:
-      OPENSSL_VER: 3.0.13
+      OPENSSL_VER: 3.0.15
       PYTHONSTRICTEXTENSIONBUILD: 1
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install Dependencies
@@ -399,7 +447,7 @@ jobs:
         path: ./hypothesis
         key: hypothesis-database-${{ github.head_ref || github.run_id }}
         restore-keys: |
-          - hypothesis-database-
+          hypothesis-database-
     - name: "Run tests"
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
       run: |
@@ -407,7 +455,7 @@ jobs:
         #
         # (GH-104097) test_sysconfig is skipped because it has tests that are
         # failing when executed from inside a virtual environment.
-        ${{ env.VENV_PYTHON }} -m test \
+        "${VENV_PYTHON}" -m test \
           -W \
           -o \
           -j4 \
@@ -429,16 +477,21 @@ jobs:
 
   build_asan:
     name: 'Address sanitizer'
-    runs-on: ubuntu-22.04
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
+    strategy:
+      matrix:
+        os: [ubuntu-24.04]
     env:
-      OPENSSL_VER: 3.0.13
+      OPENSSL_VER: 3.0.15
       PYTHONSTRICTEXTENSIONBUILD: 1
       ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
@@ -464,7 +517,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
+        key: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
@@ -494,6 +547,7 @@ jobs:
       config_hash: ${{ needs.check_source.outputs.config_hash }}
       options: ./configure --config-cache --with-thread-sanitizer --with-pydebug
       suppressions_path: Tools/tsan/supressions.txt
+      tsan_logs_artifact_name: tsan-logs-default
 
   build_tsan_free_threading:
     name: 'Thread sanitizer (free-threading)'
@@ -504,6 +558,7 @@ jobs:
       config_hash: ${{ needs.check_source.outputs.config_hash }}
       options: ./configure --config-cache --disable-gil --with-thread-sanitizer --with-pydebug
       suppressions_path: Tools/tsan/suppressions_free_threading.txt
+      tsan_logs_artifact_name: tsan-logs-free-threading
 
   # CIFuzz job based on https://google.github.io/oss-fuzz/getting-started/continuous-integration/
   cifuzz:
@@ -552,15 +607,14 @@ jobs:
     needs:
     - check_source  # Transitive dependency, needed to access `run_tests` value
     - check-docs
+    - check_autoconf_regen
     - check_generated_files
     - build_macos
-    - build_macos_free_threading
     - build_ubuntu
-    - build_ubuntu_free_threading
     - build_ubuntu_ssltests
     - build_wasi
     - build_windows
-    - build_windows_free_threading
+    - build_windows_msi
     - test_hypothesis
     - build_asan
     - build_tsan
@@ -575,6 +629,7 @@ jobs:
       with:
         allowed-failures: >-
           build_ubuntu_ssltests,
+          build_windows_msi,
           cifuzz,
           test_hypothesis,
         allowed-skips: >-
@@ -588,15 +643,13 @@ jobs:
           ${{
             needs.check_source.outputs.run_tests != 'true'
             && '
+            check_autoconf_regen,
             check_generated_files,
             build_macos,
-            build_macos_free_threading,
             build_ubuntu,
-            build_ubuntu_free_threading,
             build_ubuntu_ssltests,
             build_wasi,
             build_windows,
-            build_windows_free_threading,
             build_asan,
             build_tsan,
             build_tsan_free_threading,
diff --git a/.github/workflows/build_msi.yml b/.github/workflows/build_msi.yml
deleted file mode 100644
index 65d32c734e7745..00000000000000
--- a/.github/workflows/build_msi.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-name: TestsMSI
-
-on:
-  workflow_dispatch:
-  push:
-    branches:
-    - 'main'
-    - '3.*'
-    paths:
-    - 'Tools/msi/**'
-    - '.github/workflows/build_msi.yml'
-  pull_request:
-    branches:
-    - 'main'
-    - '3.*'
-    paths:
-    - 'Tools/msi/**'
-    - '.github/workflows/build_msi.yml'
-
-permissions:
-  contents: read
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  build:
-    name: Windows Installer
-    runs-on: windows-latest
-    timeout-minutes: 60
-    strategy:
-      matrix:
-        type: [x86, x64, arm64]
-    env:
-      IncludeFreethreaded: true
-    steps:
-    - uses: actions/checkout@v4
-    - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -${{ matrix.type }}
diff --git a/.github/workflows/documentation-links.yml b/.github/workflows/documentation-links.yml
index 43a7afec73884e..fdb4b9aa29a7c8 100644
--- a/.github/workflows/documentation-links.yml
+++ b/.github/workflows/documentation-links.yml
@@ -10,9 +10,6 @@ on:
     - 'Doc/**'
     - '.github/workflows/doc.yml'
 
-permissions:
-  pull-requests: write
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
@@ -20,6 +17,9 @@ concurrency:
 jobs:
   documentation-links:
     runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+
     steps:
       - uses: readthedocs/actions/preview@v1
         with:
diff --git a/.github/workflows/jit.yml b/.github/workflows/jit.yml
index 7152cde8f4607c..508bb8c42bcf59 100644
--- a/.github/workflows/jit.yml
+++ b/.github/workflows/jit.yml
@@ -5,11 +5,17 @@ on:
       - '**jit**'
       - 'Python/bytecodes.c'
       - 'Python/optimizer*.c'
+      - '!Python/perf_jit_trampoline.c'
+      - '!**/*.md'
+      - '!**/*.ini'
   push:
     paths:
       - '**jit**'
       - 'Python/bytecodes.c'
       - 'Python/optimizer*.c'
+      - '!Python/perf_jit_trampoline.c'
+      - '!**/*.md'
+      - '!**/*.ini'
   workflow_dispatch:
 
 permissions:
@@ -19,9 +25,28 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
+  interpreter:
+    name: Interpreter (Debug)
+    runs-on: ubuntu-latest
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Build tier two interpreter
+        run: |
+          ./configure --enable-experimental-jit=interpreter --with-pydebug
+          make all --jobs 4
+      - name: Test tier two interpreter
+        run: |
+          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
   jit:
     name: ${{ matrix.target }} (${{ matrix.debug && 'Debug' || 'Release' }})
+    needs: interpreter
     runs-on: ${{ matrix.runner }}
     timeout-minutes: 90
     strategy:
@@ -83,6 +108,8 @@ jobs:
       CC: ${{ matrix.compiler }}
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
@@ -90,8 +117,7 @@ jobs:
       - name: Native Windows
         if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
         run: |
-          choco upgrade llvm -y
-          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}
+          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
           ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '--pgo' }} -p ${{ matrix.architecture }}
           ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
@@ -99,8 +125,7 @@ jobs:
       - name: Emulated Windows
         if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
         run: |
-          choco upgrade llvm -y
-          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}
+          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
           ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
 
       - name: Native macOS
@@ -113,17 +138,15 @@ jobs:
           make all --jobs 4
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      # --with-lto has been removed temporarily as a result of an open issue in LLVM 18 (see https://github.com/llvm/llvm-project/issues/87553)
       - name: Native Linux
         if: runner.os == 'Linux' && matrix.architecture == 'x86_64'
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations' }}
+          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      # --with-lto has been removed temporarily as a result of an open issue in LLVM 18 (see https://github.com/llvm/llvm-project/issues/87553)
       - name: Emulated Linux
         if: runner.os == 'Linux' && matrix.architecture != 'x86_64'
         # The --ignorefile on ./python -m test is used to exclude tests known to fail when running on an emulated Linux.
@@ -141,6 +164,27 @@ jobs:
           CC="${{ matrix.compiler == 'clang' && 'clang --target=$HOST' || '$HOST-gcc' }}" \
             CPP="$CC --preprocess" \
             HOSTRUNNER=qemu-${{ matrix.architecture }} \
-            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations ' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
+            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
           make all --jobs 4
           ./python -m test --ignorefile=Tools/jit/ignore-tests-emulated-linux.txt --multiprocess 0 --timeout 4500 --verbose2 --verbose3
+
+  jit-with-disabled-gil:
+    name: Free-Threaded (Debug)
+    needs: interpreter
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      - name: Build with JIT enabled and GIL disabled
+        run: |
+          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh 18
+          export PATH="$(llvm-config-18 --bindir):$PATH"
+          ./configure --enable-experimental-jit --with-pydebug --disable-gil
+          make all --jobs 4
+      - name: Run tests
+        run: |
+          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index ccde03f91983df..d74ce8fcc256dc 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -20,6 +20,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: "3.x"
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 35996f237814ba..5dfa8d7bcafd78 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -34,6 +34,7 @@ concurrency:
 jobs:
   mypy:
     strategy:
+      fail-fast: false
       matrix:
         target: [
           "Lib/_pyrepl",
@@ -50,9 +51,11 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.13"
           cache: pip
           cache-dependency-path: Tools/requirements-dev.txt
       - run: pip install -r Tools/requirements-dev.txt
diff --git a/.github/workflows/posix-deps-apt.sh b/.github/workflows/posix-deps-apt.sh
index fb485bd4f82bd2..d5538cd9367ec6 100755
--- a/.github/workflows/posix-deps-apt.sh
+++ b/.github/workflows/posix-deps-apt.sh
@@ -1,11 +1,9 @@
 #!/bin/sh
 apt-get update
 
-# autoconf-archive is needed by autoreconf (check_generated_files job)
 apt-get -yq install \
     build-essential \
     pkg-config \
-    autoconf-archive \
     ccache \
     gdb \
     lcov \
@@ -15,7 +13,6 @@ apt-get -yq install \
     libgdbm-dev \
     libgdbm-compat-dev \
     liblzma-dev \
-    libmpdec-dev \
     libncurses5-dev \
     libreadline6-dev \
     libsqlite3-dev \
diff --git a/.github/workflows/require-pr-label.yml b/.github/workflows/require-pr-label.yml
index ff5cbdf3eda749..ee91e2a39a198d 100644
--- a/.github/workflows/require-pr-label.yml
+++ b/.github/workflows/require-pr-label.yml
@@ -4,15 +4,14 @@ on:
   pull_request:
     types: [opened, reopened, labeled, unlabeled, synchronize]
 
-permissions:
-  issues: write
-  pull-requests: write
-
 jobs:
   label:
     name: DO-NOT-MERGE / unresolved review
     if: github.repository_owner == 'python'
     runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
     timeout-minutes: 10
 
     steps:
diff --git a/.github/workflows/reusable-change-detection.yml b/.github/workflows/reusable-change-detection.yml
new file mode 100644
index 00000000000000..8bdcc13ae3542f
--- /dev/null
+++ b/.github/workflows/reusable-change-detection.yml
@@ -0,0 +1,158 @@
+name: Reusable change detection
+
+on:  # yamllint disable-line rule:truthy
+  workflow_call:
+    outputs:
+      # Some of the referenced steps set outputs conditionally and there may be
+      # cases when referencing them evaluates to empty strings. It is nice to
+      # work with proper booleans so they have to be evaluated through JSON
+      # conversion in the expressions. However, empty strings used like that
+      # may trigger all sorts of undefined and hard-to-debug behaviors in
+      # GitHub Actions CI/CD. To help with this, all of the outputs set here
+      # that are meant to be used as boolean flags (and not arbitrary strings),
+      # MUST have fallbacks with default values set. A common pattern would be
+      # to add ` || false` to all such expressions here, in the output
+      # definitions. They can then later be safely used through the following
+      # idiom in job conditionals and other expressions. Here's some examples:
+      #
+      #   if: fromJSON(needs.change-detection.outputs.run-docs)
+      #
+      #   ${{
+      #        fromJSON(needs.change-detection.outputs.run-tests)
+      #        && 'truthy-branch'
+      #        || 'falsy-branch'
+      #   }}
+      #
+      config_hash:
+        description: Config hash value for use in cache keys
+        value: ${{ jobs.compute-changes.outputs.config-hash }}  # str
+      run-docs:
+        description: Whether to build the docs
+        value: ${{ jobs.compute-changes.outputs.run-docs || false }}  # bool
+      run_tests:
+        description: Whether to run the regular tests
+        value: ${{ jobs.compute-changes.outputs.run-tests || false }}  # bool
+      run-win-msi:
+        description: Whether to run the MSI installer smoke tests
+        value: >-  # bool
+          ${{ jobs.compute-changes.outputs.run-win-msi || false }}
+      run_hypothesis:
+        description: Whether to run the Hypothesis tests
+        value: >-  # bool
+          ${{ jobs.compute-changes.outputs.run-hypothesis || false }}
+      run_cifuzz:
+        description: Whether to run the CIFuzz job
+        value: >-  # bool
+          ${{ jobs.compute-changes.outputs.run-cifuzz || false }}
+
+jobs:
+  compute-changes:
+    name: Compute changed files
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    outputs:
+      config-hash: ${{ steps.config-hash.outputs.hash }}
+      run-cifuzz: ${{ steps.check.outputs.run-cifuzz }}
+      run-docs: ${{ steps.docs-changes.outputs.run-docs }}
+      run-hypothesis: ${{ steps.check.outputs.run-hypothesis }}
+      run-tests: ${{ steps.check.outputs.run-tests }}
+      run-win-msi: ${{ steps.win-msi-changes.outputs.run-win-msi }}
+    steps:
+    - run: >-
+        echo '${{ github.event_name }}'
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
+    - name: Check for source changes
+      id: check
+      run: |
+        if [ -z "$GITHUB_BASE_REF" ]; then
+          echo "run-tests=true" >> $GITHUB_OUTPUT
+        else
+          git fetch origin $GITHUB_BASE_REF --depth=1
+          # git diff "origin/$GITHUB_BASE_REF..." (3 dots) may be more
+          # reliable than git diff "origin/$GITHUB_BASE_REF.." (2 dots),
+          # but it requires to download more commits (this job uses
+          # "git fetch --depth=1").
+          #
+          # git diff "origin/$GITHUB_BASE_REF..." (3 dots) works with Git
+          # 2.26, but Git 2.28 is stricter and fails with "no merge base".
+          #
+          # git diff "origin/$GITHUB_BASE_REF.." (2 dots) should be enough on
+          # GitHub, since GitHub starts by merging origin/$GITHUB_BASE_REF
+          # into the PR branch anyway.
+          #
+          # https://github.com/python/core-workflow/issues/373
+          git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qvE '(\.rst$|^Doc|^Misc|^\.pre-commit-config\.yaml$|\.ruff\.toml$|\.md$|mypy\.ini$)' && echo "run-tests=true" >> $GITHUB_OUTPUT || true
+        fi
+
+        # Check if we should run hypothesis tests
+        GIT_BRANCH=${GITHUB_BASE_REF:-${GITHUB_REF#refs/heads/}}
+        echo $GIT_BRANCH
+        if $(echo "$GIT_BRANCH" | grep -q -w '3\.\(8\|9\|10\|11\)'); then
+          echo "Branch too old for hypothesis tests"
+          echo "run-hypothesis=false" >> $GITHUB_OUTPUT
+        else
+          echo "Run hypothesis tests"
+          echo "run-hypothesis=true" >> $GITHUB_OUTPUT
+        fi
+
+        # oss-fuzz maintains a configuration for fuzzing the main branch of
+        # CPython, so CIFuzz should be run only for code that is likely to be
+        # merged into the main branch; compatibility with older branches may
+        # be broken.
+        FUZZ_RELEVANT_FILES='(\.c$|\.h$|\.cpp$|^configure$|^\.github/workflows/build\.yml$|^Modules/_xxtestfuzz)'
+        if [ "$GITHUB_BASE_REF" = "main" ] && [ "$(git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qE $FUZZ_RELEVANT_FILES; echo $?)" -eq 0 ]; then
+          # The tests are pretty slow so they are executed only for PRs
+          # changing relevant files.
+          echo "Run CIFuzz tests"
+          echo "run-cifuzz=true" >> $GITHUB_OUTPUT
+        else
+          echo "Branch too old for CIFuzz tests; or no C files were changed"
+          echo "run-cifuzz=false" >> $GITHUB_OUTPUT
+        fi
+    - name: Compute hash for config cache key
+      id: config-hash
+      run: |
+        echo "hash=${{ hashFiles('configure', 'configure.ac', '.github/workflows/build.yml') }}" >> $GITHUB_OUTPUT
+    - name: Get a list of the changed documentation-related files
+      if: github.event_name == 'pull_request'
+      id: changed-docs-files
+      uses: Ana06/get-changed-files@v2.3.0
+      with:
+        filter: |
+          Doc/**
+          Misc/**
+          .github/workflows/reusable-docs.yml
+        format: csv  # works for paths with spaces
+    - name: Check for docs changes
+      # We only want to run this on PRs when related files are changed,
+      # or when user triggers manual workflow run.
+      if: >-
+        (
+          github.event_name == 'pull_request'
+          && steps.changed-docs-files.outputs.added_modified_renamed != ''
+        ) || github.event_name == 'workflow_dispatch'
+      id: docs-changes
+      run: |
+        echo "run-docs=true" >> "${GITHUB_OUTPUT}"
+    - name: Get a list of the MSI installer-related files
+      if: github.event_name == 'pull_request'
+      id: changed-win-msi-files
+      uses: Ana06/get-changed-files@v2.3.0
+      with:
+        filter: |
+          Tools/msi/**
+          .github/workflows/reusable-windows-msi.yml
+        format: csv  # works for paths with spaces
+    - name: Check for changes in MSI installer-related files
+      # We only want to run this on PRs when related files are changed,
+      # or when user triggers manual workflow run.
+      if: >-
+        (
+          github.event_name == 'pull_request'
+          && steps.changed-win-msi-files.outputs.added_modified_renamed != ''
+        ) || github.event_name == 'workflow_dispatch'
+      id: win-msi-changes
+      run: |
+        echo "run-win-msi=true" >> "${GITHUB_OUTPUT}"
diff --git a/.github/workflows/reusable-docs.yml b/.github/workflows/reusable-docs.yml
index 9e26d7847d2bd3..6738acc98c6565 100644
--- a/.github/workflows/reusable-docs.yml
+++ b/.github/workflows/reusable-docs.yml
@@ -1,4 +1,4 @@
-name: Docs
+name: Reusable Docs
 
 on:
   workflow_call:
@@ -11,6 +11,9 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build_doc:
     name: 'Docs'
@@ -19,26 +22,34 @@ jobs:
     env:
       branch_base: 'origin/${{ github.event.pull_request.base.ref }}'
       branch_pr: 'origin/${{ github.event.pull_request.head.ref }}'
+      commits: ${{ github.event.pull_request.commits }}
       refspec_base: '+${{ github.event.pull_request.base.sha }}:remotes/origin/${{ github.event.pull_request.base.ref }}'
       refspec_pr: '+${{ github.event.pull_request.head.sha }}:remotes/origin/${{ github.event.pull_request.head.ref }}'
     steps:
     - name: 'Check out latest PR branch commit'
       uses: actions/checkout@v4
       with:
-        ref: ${{ github.event.pull_request.head.sha }}
+        persist-credentials: false
+        ref: >-
+          ${{
+            github.event_name == 'pull_request'
+            && github.event.pull_request.head.sha
+            || ''
+          }}
     # Adapted from https://github.com/actions/checkout/issues/520#issuecomment-1167205721
     - name: 'Fetch commits to get branch diff'
+      if: github.event_name == 'pull_request'
       run: |
         # Fetch enough history to find a common ancestor commit (aka merge-base):
-        git fetch origin ${{ env.refspec_pr }} --depth=$(( ${{ github.event.pull_request.commits }} + 1 )) \
+        git fetch origin "${refspec_pr}" --depth=$(( commits + 1 )) \
           --no-tags --prune --no-recurse-submodules
 
         # This should get the oldest commit in the local fetched history (which may not be the commit the PR branched from):
-        COMMON_ANCESTOR=$( git rev-list --first-parent --max-parents=0 --max-count=1 ${{ env.branch_pr }} )
+        COMMON_ANCESTOR=$( git rev-list --first-parent --max-parents=0 --max-count=1 "${branch_pr}" )
         DATE=$( git log --date=iso8601 --format=%cd "${COMMON_ANCESTOR}" )
 
         # Get all commits since that commit date from the base branch (eg: master or main):
-        git fetch origin ${{ env.refspec_base }} --shallow-since="${DATE}" \
+        git fetch origin "${refspec_base}" --shallow-since="${DATE}" \
           --no-tags --prune --no-recurse-submodules
     - name: 'Set up Python'
       uses: actions/setup-python@v5
@@ -54,41 +65,26 @@ jobs:
       continue-on-error: true
       run: |
         set -Eeuo pipefail
-        # Build docs with the '-n' (nit-picky) option; write warnings to file
-        make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going -w sphinx-warnings.txt" html
+        # Build docs with the nit-picky option; write warnings to file
+        make -C Doc/ PYTHON=../python SPHINXOPTS="--quiet --nitpicky --fail-on-warning --keep-going --warning-file sphinx-warnings.txt" html
     - name: 'Check warnings'
       if: github.event_name == 'pull_request'
       run: |
         python Doc/tools/check-warnings.py \
-          --annotate-diff '${{ env.branch_base }}' '${{ env.branch_pr }}' \
+          --annotate-diff "${branch_base}" "${branch_pr}" \
           --fail-if-regression \
-          --fail-if-improved
-
-  # This build doesn't use problem matchers or check annotations
-  build_doc_oldest_supported_sphinx:
-    name: 'Docs (Oldest Sphinx)'
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v4
-    - name: 'Set up Python'
-      uses: actions/setup-python@v5
-      with:
-        python-version: '3.12'  # known to work with Sphinx 6.2.1
-        cache: 'pip'
-        cache-dependency-path: 'Doc/requirements-oldest-sphinx.txt'
-    - name: 'Install build dependencies'
-      run: make -C Doc/ venv REQUIREMENTS="requirements-oldest-sphinx.txt"
-    - name: 'Build HTML documentation'
-      run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
+          --fail-if-improved \
+          --fail-if-new-news-nit
 
   # Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
   doctest:
     name: 'Doctest'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - uses: actions/cache@v4
       with:
         path: ~/.cache/pip
@@ -105,4 +101,4 @@ jobs:
       run: make -C Doc/ PYTHON=../python venv
     # Use "xvfb-run" since some doctest tests open GUI windows
     - name: 'Run documentation doctest'
-      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="-W --keep-going" doctest
+      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="--fail-on-warning --keep-going" doctest
diff --git a/.github/workflows/reusable-macos.yml b/.github/workflows/reusable-macos.yml
index d06a718d199c96..6828c0ba2dff3b 100644
--- a/.github/workflows/reusable-macos.yml
+++ b/.github/workflows/reusable-macos.yml
@@ -1,3 +1,5 @@
+name: Reusable macOS
+
 on:
   workflow_call:
     inputs:
@@ -8,13 +10,17 @@ on:
         required: false
         type: boolean
         default: false
-      os-matrix:
-        required: false
+      os:
+        description: OS to run the job
+        required: true
         type: string
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build_macos:
-    name: 'build and test'
+    name: build and test (${{ inputs.os }})
     timeout-minutes: 60
     env:
       HOMEBREW_NO_ANALYTICS: 1
@@ -23,22 +29,23 @@ jobs:
       HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
       PYTHONSTRICTEXTENSIONBUILD: 1
       TERM: linux
-    strategy:
-      fail-fast: false
-      matrix:
-        os: ${{fromJson(inputs.os-matrix)}}
-    runs-on: ${{ matrix.os }}
+    runs-on: ${{ inputs.os }}
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
       uses: actions/cache@v4
       with:
         path: config.cache
-        key: ${{ github.job }}-${{ matrix.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
+        key: ${{ github.job }}-${{ inputs.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
     - name: Install Homebrew dependencies
-      run: brew install pkg-config openssl@3.0 xz gdbm tcl-tk
+      run: |
+        brew install pkg-config openssl@3.0 xz gdbm tcl-tk@8
+        # Because alternate versions are not symlinked into place by default:
+        brew link --overwrite tcl-tk@8
     - name: Configure CPython
       run: |
         GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
diff --git a/.github/workflows/reusable-tsan.yml b/.github/workflows/reusable-tsan.yml
index 48bd5b547e8cba..47a63be32560bb 100644
--- a/.github/workflows/reusable-tsan.yml
+++ b/.github/workflows/reusable-tsan.yml
@@ -1,3 +1,5 @@
+name: Reusable Thread Sanitizer
+
 on:
   workflow_call:
     inputs:
@@ -11,14 +13,26 @@ on:
         description: 'A repo relative path to the suppressions file'
         required: true
         type: string
+      tsan_logs_artifact_name:
+        description: 'Name of the TSAN logs artifact. Must be unique for each job.'
+        required: true
+        type: string
+
+env:
+  FORCE_COLOR: 1
 
 jobs:
   build_tsan_reusable:
     name: 'Thread sanitizer'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 60
+    env:
+      OPTIONS: ${{ inputs.options }}
+      SUPPRESSIONS_PATH: ${{ inputs.suppressions_path }}
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
@@ -32,16 +46,16 @@ jobs:
         # Install clang-18
         wget https://apt.llvm.org/llvm.sh
         chmod +x llvm.sh
-        sudo ./llvm.sh 18
-        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-18 100
-        sudo update-alternatives --set clang /usr/bin/clang-18
-        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-18 100
-        sudo update-alternatives --set clang++ /usr/bin/clang++-18
+        sudo ./llvm.sh 17  # gh-121946: llvm-18 package is temporarily broken
+        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-17 100
+        sudo update-alternatives --set clang /usr/bin/clang-17
+        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-17 100
+        sudo update-alternatives --set clang++ /usr/bin/clang++-17
         # Reduce ASLR to avoid TSAN crashing
         sudo sysctl -w vm.mmap_rnd_bits=28
     - name: TSAN Option Setup
       run: |
-        echo "TSAN_OPTIONS=suppressions=${GITHUB_WORKSPACE}/${{ inputs.suppressions_path }}" >> $GITHUB_ENV
+        echo "TSAN_OPTIONS=log_path=${GITHUB_WORKSPACE}/tsan_log suppressions=${GITHUB_WORKSPACE}/${SUPPRESSIONS_PATH} handle_segv=0" >> $GITHUB_ENV
         echo "CC=clang" >> $GITHUB_ENV
         echo "CXX=clang++" >> $GITHUB_ENV
     - name: Add ccache to PATH
@@ -53,10 +67,20 @@ jobs:
         save: ${{ github.event_name == 'push' }}
         max-size: "200M"
     - name: Configure CPython
-      run: ${{ inputs.options }}
+      run: "${OPTIONS}"
     - name: Build CPython
       run: make -j4
     - name: Display build info
       run: make pythoninfo
     - name: Tests
       run: ./python -m test --tsan -j4
+    - name: Display TSAN logs
+      if: always()
+      run: find ${GITHUB_WORKSPACE} -name 'tsan_log.*' | xargs head -n 1000
+    - name: Archive TSAN logs
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ inputs.tsan_logs_artifact_name }}
+        path: tsan_log.*
+        if-no-files-found: ignore
diff --git a/.github/workflows/reusable-ubuntu.yml b/.github/workflows/reusable-ubuntu.yml
index fa450ed3376321..ea9e6f96bc2a8b 100644
--- a/.github/workflows/reusable-ubuntu.yml
+++ b/.github/workflows/reusable-ubuntu.yml
@@ -1,25 +1,37 @@
+name: Reusable Ubuntu
+
 on:
   workflow_call:
     inputs:
       config_hash:
         required: true
         type: string
-      options:
-        required: true
-        type: string
+      free-threading:
+        description: Whether to use free-threaded mode
+        required: false
+        type: boolean
+        default: false
+
+env:
+  FORCE_COLOR: 1
 
 jobs:
   build_ubuntu_reusable:
     name: 'build and test'
     timeout-minutes: 60
-    runs-on: ubuntu-22.04
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-24.04, ubuntu-24.04-arm]
     env:
-      FORCE_COLOR: 1
-      OPENSSL_VER: 3.0.13
+      OPENSSL_VER: 3.0.15
       PYTHONSTRICTEXTENSIONBUILD: 1
       TERM: linux
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install dependencies
@@ -34,7 +46,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
+        key: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
@@ -63,10 +75,15 @@ jobs:
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
     - name: Configure CPython out-of-tree
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: ${{ inputs.options }}
+      run: >-
+        ../cpython-ro-srcdir/configure
+        --config-cache
+        --with-pydebug
+        --with-openssl=$OPENSSL_DIR
+        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
     - name: Build CPython out-of-tree
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: make -j4
+      run: make -j
     - name: Display build info
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
       run: make pythoninfo
diff --git a/.github/workflows/reusable-wasi.yml b/.github/workflows/reusable-wasi.yml
index c389fe9e173b38..e955e6932d602a 100644
--- a/.github/workflows/reusable-wasi.yml
+++ b/.github/workflows/reusable-wasi.yml
@@ -1,3 +1,5 @@
+name: Reusable WASI
+
 on:
   workflow_call:
     inputs:
@@ -5,36 +7,41 @@ on:
         required: true
         type: string
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   build_wasi_reusable:
     name: 'build and test'
     timeout-minutes: 60
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     env:
-      WASMTIME_VERSION: 18.0.3
-      WASI_SDK_VERSION: 21
+      WASMTIME_VERSION: 22.0.0
+      WASI_SDK_VERSION: 24
       WASI_SDK_PATH: /opt/wasi-sdk
       CROSS_BUILD_PYTHON: cross-build/build
-      CROSS_BUILD_WASI: cross-build/wasm32-wasi
+      CROSS_BUILD_WASI: cross-build/wasm32-wasip1
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     # No problem resolver registered as one doesn't currently exist for Clang.
     - name: "Install wasmtime"
-      uses: jcbhmr/setup-wasmtime@v2
+      uses: bytecodealliance/actions/wasmtime/setup@v1
       with:
-        wasmtime-version: ${{ env.WASMTIME_VERSION }}
+        version: ${{ env.WASMTIME_VERSION }}
     - name: "Restore WASI SDK"
       id: cache-wasi-sdk
       uses: actions/cache@v4
       with:
         path: ${{ env.WASI_SDK_PATH }}
         key: ${{ runner.os }}-wasi-sdk-${{ env.WASI_SDK_VERSION }}
-    - name: "Install WASI SDK"
+    - name: "Install WASI SDK"  # Hard-coded to x64.
       if: steps.cache-wasi-sdk.outputs.cache-hit != 'true'
       run: |
-        mkdir ${{ env.WASI_SDK_PATH }} && \
-        curl -s -S --location https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${{ env.WASI_SDK_VERSION }}/wasi-sdk-${{ env.WASI_SDK_VERSION }}.0-linux.tar.gz | \
-        tar --strip-components 1 --directory ${{ env.WASI_SDK_PATH }} --extract --gunzip
+        mkdir "${WASI_SDK_PATH}" && \
+        curl -s -S --location "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_VERSION}.0-x86_64-linux.tar.gz" | \
+        tar --strip-components 1 --directory "${WASI_SDK_PATH}" --extract --gunzip
     - name: "Configure ccache action"
       uses: hendrikmuhs/ccache-action@v1.2
       with:
@@ -50,8 +57,10 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ${{ env.CROSS_BUILD_PYTHON }}/config.cache
-        # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}-${{ env.pythonLocation }}
+        # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python.
+        # Include the hash of `Tools/wasm/wasi.py` as it may change the environment variables.
+        # (Make sure to keep the key in sync with the other config.cache step below.)
+        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ env.WASI_SDK_VERSION }}-${{ env.WASMTIME_VERSION }}-${{ inputs.config_hash }}-${{ hashFiles('Tools/wasm/wasi.py') }}-${{ env.pythonLocation }}
     - name: "Configure build Python"
       run: python3 Tools/wasm/wasi.py configure-build-python -- --config-cache --with-pydebug
     - name: "Make build Python"
@@ -60,14 +69,14 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ${{ env.CROSS_BUILD_WASI }}/config.cache
-        # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-wasi-sdk-${{ env.WASI_SDK_VERSION }}-${{ inputs.config_hash }}-${{ env.pythonLocation }}
+        # Should be kept in sync with the other config.cache step above.
+        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ env.WASI_SDK_VERSION }}-${{ env.WASMTIME_VERSION }}-${{ inputs.config_hash }}-${{ hashFiles('Tools/wasm/wasi.py') }}-${{ env.pythonLocation }}
     - name: "Configure host"
       # `--with-pydebug` inferred from configure-build-python
       run: python3 Tools/wasm/wasi.py configure-host -- --config-cache
     - name: "Make host"
       run: python3 Tools/wasm/wasi.py make-host
     - name: "Display build info"
-      run: make --directory ${{ env.CROSS_BUILD_WASI }} pythoninfo
+      run: make --directory "${CROSS_BUILD_WASI}" pythoninfo
     - name: "Test"
-      run: make --directory ${{ env.CROSS_BUILD_WASI }} test
+      run: make --directory "${CROSS_BUILD_WASI}" test
diff --git a/.github/workflows/reusable-windows-msi.yml b/.github/workflows/reusable-windows-msi.yml
new file mode 100644
index 00000000000000..bc0414d1bbcd8f
--- /dev/null
+++ b/.github/workflows/reusable-windows-msi.yml
@@ -0,0 +1,31 @@
+name: Reusable Windows MSI
+
+on:
+  workflow_call:
+    inputs:
+      arch:
+        description: CPU architecture
+        required: true
+        type: string
+
+permissions:
+  contents: read
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build:
+    name: installer for ${{ inputs.arch }}
+    runs-on: windows-latest
+    timeout-minutes: 60
+    env:
+      ARCH: ${{ inputs.arch }}
+      IncludeFreethreaded: true
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
+    - name: Build CPython installer
+      run: ./Tools/msi/build.bat --doc -"${ARCH}"
+      shell: bash
diff --git a/.github/workflows/reusable-windows.yml b/.github/workflows/reusable-windows.yml
index c0209e0e1c92e9..5485a0169130b0 100644
--- a/.github/workflows/reusable-windows.yml
+++ b/.github/workflows/reusable-windows.yml
@@ -1,53 +1,56 @@
+name: Reusable Windows
+
 on:
   workflow_call:
     inputs:
+      os:
+        description: OS to run on
+        required: true
+        type: string
+      arch:
+        description: CPU architecture
+        required: true
+        type: string
       free-threading:
+        description: Whether to compile CPython in free-threading mode
         required: false
         type: boolean
         default: false
 
-jobs:
-  build_win32:
-    name: 'build and test (x86)'
-    runs-on: windows-latest
-    timeout-minutes: 60
-    env:
-      IncludeUwp: 'true'
-    steps:
-    - uses: actions/checkout@v4
-    - name: Build CPython
-      run: .\PCbuild\build.bat -e -d -v -p Win32 ${{ inputs.free-threading && '--disable-gil' || '' }}
-    - name: Display build info
-      run: .\python.bat -m test.pythoninfo
-    - name: Tests
-      run: .\PCbuild\rt.bat -p Win32 -d -q --fast-ci ${{ inputs.free-threading && '--disable-gil' || '' }}
-
-  build_win_amd64:
-    name: 'build and test (x64)'
-    runs-on: windows-latest
-    timeout-minutes: 60
-    env:
-       IncludeUwp: 'true'
-    steps:
-    - uses: actions/checkout@v4
-    - name: Register MSVC problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/msvc.json"
-    - name: Build CPython
-      run: .\PCbuild\build.bat -e -d -v -p x64 ${{ inputs.free-threading && '--disable-gil' || '' }}
-    - name: Display build info
-      run: .\python.bat -m test.pythoninfo
-    - name: Tests
-      run: .\PCbuild\rt.bat -p x64 -d -q --fast-ci ${{ inputs.free-threading && '--disable-gil' || '' }}
+env:
+  FORCE_COLOR: 1
+  IncludeUwp: >-
+    true
 
-  build_win_arm64:
-    name: 'build (arm64)'
-    runs-on: windows-latest
+jobs:
+  build:
+    name: ${{ inputs.arch == 'arm64' && 'build' || 'build and test' }} (${{ inputs.arch }})
+    runs-on: ${{ inputs.os }}
     timeout-minutes: 60
     env:
-      IncludeUwp: 'true'
+      ARCH: ${{ inputs.arch }}
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Register MSVC problem matcher
+      if: inputs.arch != 'Win32'
       run: echo "::add-matcher::.github/problem-matchers/msvc.json"
     - name: Build CPython
-      run: .\PCbuild\build.bat -e -d -v -p arm64 ${{ inputs.free-threading && '--disable-gil' || '' }}
+      run: >-
+        .\\PCbuild\\build.bat
+        -e -d -v
+        -p "${ARCH}"
+        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
+      shell: bash
+    - name: Display build info  # FIXME(diegorusso): remove the `if`
+      if: inputs.arch != 'arm64'
+      run: .\\python.bat -m test.pythoninfo
+    - name: Tests  # FIXME(diegorusso): remove the `if`
+      if: inputs.arch != 'arm64'
+      run: >-
+        .\\PCbuild\\rt.bat
+        -p "${ARCH}"
+        -d -q --fast-ci
+        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
+      shell: bash
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index f97587e68cbbe4..7578189f5d4d67 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -4,14 +4,13 @@ on:
   schedule:
   - cron: "0 */6 * * *"
 
-permissions:
-  pull-requests: write
-
 jobs:
   stale:
     if: github.repository_owner == 'python'
 
     runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
     timeout-minutes: 10
 
     steps:
diff --git a/.github/workflows/verify-ensurepip-wheels.yml b/.github/workflows/verify-ensurepip-wheels.yml
index 83b007f1c9c2ef..463e7bf3355cc3 100644
--- a/.github/workflows/verify-ensurepip-wheels.yml
+++ b/.github/workflows/verify-ensurepip-wheels.yml
@@ -26,6 +26,8 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: '3'
diff --git a/.github/zizmor.yml b/.github/zizmor.yml
new file mode 100644
index 00000000000000..eeda8d9eaaf484
--- /dev/null
+++ b/.github/zizmor.yml
@@ -0,0 +1,6 @@
+# Configuration for the zizmor static analysis tool, run via pre-commit in CI
+# https://woodruffw.github.io/zizmor/configuration/
+rules:
+  dangerous-triggers:
+    ignore:
+      - documentation-links.yml
diff --git a/.gitignore b/.gitignore
index 8872e9d5508ff1..1248d6dbcbee45 100644
--- a/.gitignore
+++ b/.gitignore
@@ -169,5 +169,3 @@ Python/frozen_modules/MANIFEST
 /python
 !/Python/
 
-# main branch only: ABI files are not checked/maintained.
-Doc/data/python*.abi
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fde9d9149bf62b..7f38c3e848f03d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,26 +1,33 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.3.4
+    rev: v0.9.1
     hooks:
       - id: ruff
-        name: Run Ruff on Lib/test/
+        name: Run Ruff (lint) on Doc/
+        args: [--exit-non-zero-on-fix]
+        files: ^Doc/
+      - id: ruff
+        name: Run Ruff (lint) on Lib/test/
         args: [--exit-non-zero-on-fix]
         files: ^Lib/test/
       - id: ruff
-        name: Run Ruff on Argument Clinic
+        name: Run Ruff (lint) on Argument Clinic
         args: [--exit-non-zero-on-fix, --config=Tools/clinic/.ruff.toml]
         files: ^Tools/clinic/|Lib/test/test_clinic.py
+      - id: ruff-format
+        name: Run Ruff (format) on Doc/
+        args: [--check]
+        files: ^Doc/
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 24.4.2
+    rev: 24.10.0
     hooks:
       - id: black
         name: Run Black on Tools/jit/
         files: ^Tools/jit/
-        language_version: python3.12
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v5.0.0
     hooks:
       - id: check-case-conflict
       - id: check-merge-conflict
@@ -33,8 +40,13 @@ repos:
       - id: trailing-whitespace
         types_or: [c, inc, python, rst]
 
+  - repo: https://github.com/woodruffw/zizmor-pre-commit
+    rev: v1.1.1
+    hooks:
+      - id: zizmor
+
   - repo: https://github.com/sphinx-contrib/sphinx-lint
-    rev: v0.9.1
+    rev: v1.0.0
     hooks:
       - id: sphinx-lint
         args: [--enable=default-role]
diff --git a/.readthedocs.yml b/.readthedocs.yml
index 59830c79a404e0..a57de00544e4e3 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -8,7 +8,7 @@ sphinx:
    configuration: Doc/conf.py
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-24.04
   tools:
     python: "3"
 
@@ -26,6 +26,9 @@ build:
         exit 183;
       fi
 
+    - asdf plugin add uv
+    - asdf install uv latest
+    - asdf global uv latest
     - make -C Doc venv html
     - mkdir _readthedocs
     - mv Doc/build/html _readthedocs/html
diff --git a/Android/README.md b/Android/README.md
index f5f463ca116589..3daa545cc93746 100644
--- a/Android/README.md
+++ b/Android/README.md
@@ -1,19 +1,19 @@
 # Python for Android
 
 These instructions are only needed if you're planning to compile Python for
-Android yourself. Most users should *not* need to do this. If you're looking to
-use Python on Android, one of the following tools will provide a much more
-approachable user experience:
-
-* [Briefcase](https://briefcase.readthedocs.io), from the BeeWare project
-* [Buildozer](https://buildozer.readthedocs.io), from the Kivy project
-* [Chaquopy](https://chaquo.com/chaquopy/)
+Android yourself. Most users should *not* need to do this. Instead, use one of
+the tools listed in `Doc/using/android.rst`, which will provide a much easier
+experience.
 
 
 ## Prerequisites
 
-Export the `ANDROID_HOME` environment variable to point at your Android SDK. If
-you don't already have the SDK, here's how to install it:
+First, make sure you have all the usual tools and libraries needed to build
+Python for your development machine.
+
+Second, you'll need an Android SDK. If you already have the SDK installed,
+export the `ANDROID_HOME` environment variable to point at its location.
+Otherwise, here's how to install it:
 
 * Download the "Command line tools" from <https://developer.android.com/studio>.
 * Create a directory `android-sdk/cmdline-tools`, and unzip the command line
@@ -25,7 +25,7 @@ you don't already have the SDK, here's how to install it:
 The `android.py` script also requires the following commands to be on the `PATH`:
 
 * `curl`
-* `java`
+* `java` (or set the `JAVA_HOME` environment variable)
 * `tar`
 * `unzip`
 
@@ -37,11 +37,6 @@ development tools, which currently means Linux or macOS. This involves doing a
 cross-build where you use a "build" Python (for your development machine) to
 help produce a "host" Python for Android.
 
-First, make sure you have all the usual tools and libraries needed to build
-Python for your development machine. The only Android tool you need to install
-is the command line tools package above: the build script will download the
-rest.
-
 The easiest way to do a build is to use the `android.py` script. You can either
 have it perform the entire build process from start to finish in one step, or
 you can do it in discrete steps that mirror running `configure` and `make` for
@@ -80,18 +75,62 @@ call. For example, if you want a pydebug build that also caches the results from
 
 ## Testing
 
-To run the Python test suite on Android:
-
-* Install Android Studio, if you don't already have it.
-* Follow the instructions in the previous section to build all supported
-  architectures.
-* Run `./android.py setup-testbed` to download the Gradle wrapper.
-* Open the `testbed` directory in Android Studio.
-* In the *Device Manager* dock, connect a device or start an emulator.
-  Then select it from the drop-down list in the toolbar.
-* Click the "Run" button in the toolbar.
-* The testbed app displays nothing on screen while running. To see its output,
-  open the [Logcat window](https://developer.android.com/studio/debug/logcat).
-
-To run specific tests, or pass any other arguments to the test suite, edit the
-command line in testbed/app/src/main/python/main.py.
+The test suite can be run on Linux, macOS, or Windows:
+
+* On Linux, the emulator needs access to the KVM virtualization interface, and
+  a DISPLAY environment variable pointing at an X server.
+* On Windows, you won't be able to do the build on the same machine, so you'll
+  have to copy the `cross-build/HOST` directory from somewhere else.
+
+The test suite can usually be run on a device with 2 GB of RAM, but this is
+borderline, so you may need to increase it to 4 GB. As of Android
+Studio Koala, 2 GB is the default for all emulators, although the user interface
+may indicate otherwise. Locate the emulator's directory under `~/.android/avd`,
+and find `hw.ramSize` in both config.ini and hardware-qemu.ini. Either set these
+manually to the same value, or use the Android Studio Device Manager, which will
+update both files.
+
+Before running the test suite, follow the instructions in the previous section
+to build the architecture you want to test. Then run the test script in one of
+the following modes:
+
+* In `--connected` mode, it runs on a device or emulator you have already
+  connected to the build machine. List the available devices with
+  `$ANDROID_HOME/platform-tools/adb devices -l`, then pass a device ID to the
+  script like this:
+
+  ```sh
+  ./android.py test --connected emulator-5554
+  ```
+
+* In `--managed` mode, it uses a temporary headless emulator defined in the
+  `managedDevices` section of testbed/app/build.gradle.kts. This mode is slower,
+  but more reproducible.
+
+  We currently define two devices: `minVersion` and `maxVersion`, corresponding
+  to our minimum and maximum supported Android versions. For example:
+
+  ```sh
+  ./android.py test --managed maxVersion
+  ```
+
+By default, the only messages the script will show are Python's own stdout and
+stderr. Add the `-v` option to also show Gradle output, and non-Python logcat
+messages.
+
+Any other arguments on the `android.py test` command line will be passed through
+to `python -m test` – use `--` to separate them from android.py's own options.
+See the [Python Developer's
+Guide](https://devguide.python.org/testing/run-write-tests/) for common options
+– most of them will work on Android, except for those that involve subprocesses,
+such as `-j`.
+
+Every time you run `android.py test`, changes in pure-Python files in the
+repository's `Lib` directory will be picked up immediately. Changes in C files,
+and architecture-specific files such as sysconfigdata, will not take effect
+until you re-run `android.py make-host` or `build`.
+
+
+## Using in your own app
+
+See `Doc/using/android.rst`.
diff --git a/Android/android-env.sh b/Android/android-env.sh
index 545d559d93ab36..181fcea8f40783 100644
--- a/Android/android-env.sh
+++ b/Android/android-env.sh
@@ -1,10 +1,10 @@
 # This script must be sourced with the following variables already set:
-: ${ANDROID_HOME:?}  # Path to Android SDK
-: ${HOST:?}  # GNU target triplet
+: "${ANDROID_HOME:?}"  # Path to Android SDK
+: "${HOST:?}"  # GNU target triplet
 
 # You may also override the following:
-: ${api_level:=21}  # Minimum Android API level the build will run on
-: ${PREFIX:-}  # Path in which to find required libraries
+: "${api_level:=21}"  # Minimum Android API level the build will run on
+: "${PREFIX:-}"  # Path in which to find required libraries
 
 
 # Print all messages on stderr so they're visible when running within build-wheel.
@@ -24,23 +24,23 @@ fail() {
 # * https://android.googlesource.com/platform/ndk/+/ndk-rXX-release/docs/BuildSystemMaintainers.md
 #   where XX is the NDK version. Do a diff against the version you're upgrading from, e.g.:
 #   https://android.googlesource.com/platform/ndk/+/ndk-r25-release..ndk-r26-release/docs/BuildSystemMaintainers.md
-ndk_version=26.2.11394342
+ndk_version=27.1.12297006
 
 ndk=$ANDROID_HOME/ndk/$ndk_version
-if ! [ -e $ndk ]; then
-    log "Installing NDK: this may take several minutes"
-    yes | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager "ndk;$ndk_version"
+if ! [ -e "$ndk" ]; then
+    log "Installing NDK - this may take several minutes"
+    yes | "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" "ndk;$ndk_version"
 fi
 
-if [ $HOST = "arm-linux-androideabi" ]; then
+if [ "$HOST" = "arm-linux-androideabi" ]; then
     clang_triplet=armv7a-linux-androideabi
 else
-    clang_triplet=$HOST
+    clang_triplet="$HOST"
 fi
 
 # These variables are based on BuildSystemMaintainers.md above, and
 # $ndk/build/cmake/android.toolchain.cmake.
-toolchain=$(echo $ndk/toolchains/llvm/prebuilt/*)
+toolchain=$(echo "$ndk"/toolchains/llvm/prebuilt/*)
 export AR="$toolchain/bin/llvm-ar"
 export AS="$toolchain/bin/llvm-as"
 export CC="$toolchain/bin/${clang_triplet}${api_level}-clang"
@@ -58,8 +58,8 @@ for path in "$AR" "$AS" "$CC" "$CXX" "$LD" "$NM" "$RANLIB" "$READELF" "$STRIP";
     fi
 done
 
-export CFLAGS=""
-export LDFLAGS="-Wl,--build-id=sha1 -Wl,--no-rosegment"
+export CFLAGS="-D__BIONIC_NO_PAGE_SIZE_MACRO"
+export LDFLAGS="-Wl,--build-id=sha1 -Wl,--no-rosegment -Wl,-z,max-page-size=16384"
 
 # Unlike Linux, Android does not implicitly use a dlopened library to resolve
 # relocations in subsequently-loaded libraries, even if RTLD_GLOBAL is used
@@ -72,12 +72,12 @@ LDFLAGS="$LDFLAGS -lm"
 
 # -mstackrealign is included where necessary in the clang launcher scripts which are
 # pointed to by $CC, so we don't need to include it here.
-if [ $HOST = "arm-linux-androideabi" ]; then
+if [ "$HOST" = "arm-linux-androideabi" ]; then
     CFLAGS="$CFLAGS -march=armv7-a -mthumb"
 fi
 
 if [ -n "${PREFIX:-}" ]; then
-    abs_prefix=$(realpath $PREFIX)
+    abs_prefix="$(realpath "$PREFIX")"
     CFLAGS="$CFLAGS -I$abs_prefix/include"
     LDFLAGS="$LDFLAGS -L$abs_prefix/lib"
 
@@ -85,9 +85,15 @@ if [ -n "${PREFIX:-}" ]; then
     export PKG_CONFIG_LIBDIR="$abs_prefix/lib/pkgconfig"
 fi
 
+# When compiling C++, some build systems will combine CFLAGS and CXXFLAGS, and some will
+# use CXXFLAGS alone.
+export CXXFLAGS="$CFLAGS"
+
 # Use the same variable name as conda-build
-if [ $(uname) = "Darwin" ]; then
-    export CPU_COUNT=$(sysctl -n hw.ncpu)
+if [ "$(uname)" = "Darwin" ]; then
+    CPU_COUNT="$(sysctl -n hw.ncpu)"
+    export CPU_COUNT
 else
-    export CPU_COUNT=$(nproc)
+    CPU_COUNT="$(nproc)"
+    export CPU_COUNT
 fi
diff --git a/Android/android.py b/Android/android.py
index 0a1393e61ddb0e..ae630aa8f4427c 100755
--- a/Android/android.py
+++ b/Android/android.py
@@ -1,31 +1,67 @@
 #!/usr/bin/env python3
 
+import asyncio
 import argparse
+from glob import glob
 import os
 import re
+import shlex
 import shutil
+import signal
 import subprocess
 import sys
 import sysconfig
+from asyncio import wait_for
+from contextlib import asynccontextmanager
 from os.path import basename, relpath
 from pathlib import Path
+from subprocess import CalledProcessError
 from tempfile import TemporaryDirectory
 
+
 SCRIPT_NAME = Path(__file__).name
 CHECKOUT = Path(__file__).resolve().parent.parent
+ANDROID_DIR = CHECKOUT / "Android"
+TESTBED_DIR = ANDROID_DIR / "testbed"
 CROSS_BUILD_DIR = CHECKOUT / "cross-build"
 
+APP_ID = "org.python.testbed"
+DECODE_ARGS = ("UTF-8", "backslashreplace")
+
+
+try:
+    android_home = Path(os.environ['ANDROID_HOME'])
+except KeyError:
+    sys.exit("The ANDROID_HOME environment variable is required.")
+
+adb = Path(
+    f"{android_home}/platform-tools/adb"
+    + (".exe" if os.name == "nt" else "")
+)
+
+gradlew = Path(
+    f"{TESTBED_DIR}/gradlew"
+    + (".bat" if os.name == "nt" else "")
+)
+
+logcat_started = False
 
-def delete_if_exists(path):
-    if path.exists():
+
+def delete_glob(pattern):
+    # Path.glob doesn't accept non-relative patterns.
+    for path in glob(str(pattern)):
+        path = Path(path)
         print(f"Deleting {path} ...")
-        shutil.rmtree(path)
+        if path.is_dir() and not path.is_symlink():
+            shutil.rmtree(path)
+        else:
+            path.unlink()
 
 
 def subdir(name, *, clean=None):
     path = CROSS_BUILD_DIR / name
     if clean:
-        delete_if_exists(path)
+        delete_glob(path)
     if not path.exists():
         if clean is None:
             sys.exit(
@@ -36,10 +72,14 @@ def subdir(name, *, clean=None):
     return path
 
 
-def run(command, *, host=None, **kwargs):
-    env = os.environ.copy()
+def run(command, *, host=None, env=None, log=True, **kwargs):
+    kwargs.setdefault("check", True)
+    if env is None:
+        env = os.environ.copy()
+    original_env = env.copy()
+
     if host:
-        env_script = CHECKOUT / "Android/android-env.sh"
+        env_script = ANDROID_DIR / "android-env.sh"
         env_output = subprocess.run(
             f"set -eu; "
             f"HOST={host}; "
@@ -60,15 +100,13 @@ def run(command, *, host=None, **kwargs):
                     print(line)
                     env[key] = value
 
-        if env == os.environ:
+        if env == original_env:
             raise ValueError(f"Found no variables in {env_script.name} output:\n"
                              + env_output)
 
-    print(">", " ".join(map(str, command)))
-    try:
-        subprocess.run(command, check=True, env=env, **kwargs)
-    except subprocess.CalledProcessError as e:
-        sys.exit(e)
+    if log:
+        print(">", " ".join(map(str, command)))
+    return subprocess.run(command, env=env, **kwargs)
 
 
 def build_python_path():
@@ -100,8 +138,8 @@ def make_build_python(context):
 
 def unpack_deps(host):
     deps_url = "https://github.com/beeware/cpython-android-source-deps/releases/download"
-    for name_ver in ["bzip2-1.0.8-1", "libffi-3.4.4-2", "openssl-3.0.13-1",
-                     "sqlite-3.45.1-0", "xz-5.4.6-0"]:
+    for name_ver in ["bzip2-1.0.8-2", "libffi-3.4.4-3", "openssl-3.0.15-4",
+                     "sqlite-3.45.3-3", "xz-5.4.6-1"]:
         filename = f"{name_ver}-{host}.tar.gz"
         download(f"{deps_url}/{name_ver}/{filename}")
         run(["tar", "-xf", filename])
@@ -150,10 +188,18 @@ def configure_host_python(context):
 
 
 def make_host_python(context):
+    # The CFLAGS and LDFLAGS set in android-env include the prefix dir, so
+    # delete any previous Python installation to prevent it being used during
+    # the build.
     host_dir = subdir(context.host)
+    prefix_dir = host_dir / "prefix"
+    delete_glob(f"{prefix_dir}/include/python*")
+    delete_glob(f"{prefix_dir}/lib/libpython*")
+    delete_glob(f"{prefix_dir}/lib/python*")
+
     os.chdir(host_dir / "build")
     run(["make", "-j", str(os.cpu_count())], host=context.host)
-    run(["make", "install", f"prefix={host_dir}/prefix"], host=context.host)
+    run(["make", "install", f"prefix={prefix_dir}"], host=context.host)
 
 
 def build_all(context):
@@ -164,34 +210,344 @@ def build_all(context):
 
 
 def clean_all(context):
-    delete_if_exists(CROSS_BUILD_DIR)
+    delete_glob(CROSS_BUILD_DIR)
+
+
+def setup_sdk():
+    sdkmanager = android_home / (
+        "cmdline-tools/latest/bin/sdkmanager"
+        + (".bat" if os.name == "nt" else "")
+    )
+
+    # Gradle will fail if it needs to install an SDK package whose license
+    # hasn't been accepted, so pre-accept all licenses.
+    if not all((android_home / "licenses" / path).exists() for path in [
+        "android-sdk-arm-dbt-license", "android-sdk-license"
+    ]):
+        run([sdkmanager, "--licenses"], text=True, input="y\n" * 100)
+
+    # Gradle may install this automatically, but we can't rely on that because
+    # we need to run adb within the logcat task.
+    if not adb.exists():
+        run([sdkmanager, "platform-tools"])
 
 
 # To avoid distributing compiled artifacts without corresponding source code,
 # the Gradle wrapper is not included in the CPython repository. Instead, we
 # extract it from the Gradle release.
-def setup_testbed(context):
+def setup_testbed():
+    if all((TESTBED_DIR / path).exists() for path in [
+        "gradlew", "gradlew.bat", "gradle/wrapper/gradle-wrapper.jar",
+    ]):
+        return
+
     ver_long = "8.7.0"
     ver_short = ver_long.removesuffix(".0")
-    testbed_dir = CHECKOUT / "Android/testbed"
 
     for filename in ["gradlew", "gradlew.bat"]:
         out_path = download(
             f"https://raw.githubusercontent.com/gradle/gradle/v{ver_long}/{filename}",
-            testbed_dir)
+            TESTBED_DIR)
         os.chmod(out_path, 0o755)
 
     with TemporaryDirectory(prefix=SCRIPT_NAME) as temp_dir:
-        os.chdir(temp_dir)
         bin_zip = download(
-            f"https://services.gradle.org/distributions/gradle-{ver_short}-bin.zip")
+            f"https://services.gradle.org/distributions/gradle-{ver_short}-bin.zip",
+            temp_dir)
         outer_jar = f"gradle-{ver_short}/lib/plugins/gradle-wrapper-{ver_short}.jar"
-        run(["unzip", bin_zip, outer_jar])
-        run(["unzip", "-o", "-d", f"{testbed_dir}/gradle/wrapper", outer_jar,
-             "gradle-wrapper.jar"])
+        run(["unzip", "-d", temp_dir, bin_zip, outer_jar])
+        run(["unzip", "-o", "-d", f"{TESTBED_DIR}/gradle/wrapper",
+             f"{temp_dir}/{outer_jar}", "gradle-wrapper.jar"])
 
 
-def main():
+# run_testbed will build the app automatically, but it's useful to have this as
+# a separate command to allow running the app outside of this script.
+def build_testbed(context):
+    setup_sdk()
+    setup_testbed()
+    run(
+        [gradlew, "--console", "plain", "packageDebug", "packageDebugAndroidTest"],
+        cwd=TESTBED_DIR,
+    )
+
+
+# Work around a bug involving sys.exit and TaskGroups
+# (https://github.com/python/cpython/issues/101515).
+def exit(*args):
+    raise MySystemExit(*args)
+
+
+class MySystemExit(Exception):
+    pass
+
+
+# The `test` subcommand runs all subprocesses through this context manager so
+# that no matter what happens, they can always be cancelled from another task,
+# and they will always be cleaned up on exit.
+@asynccontextmanager
+async def async_process(*args, **kwargs):
+    process = await asyncio.create_subprocess_exec(*args, **kwargs)
+    try:
+        yield process
+    finally:
+        if process.returncode is None:
+            # Allow a reasonably long time for Gradle to clean itself up,
+            # because we don't want stale emulators left behind.
+            timeout = 10
+            process.terminate()
+            try:
+                await wait_for(process.wait(), timeout)
+            except TimeoutError:
+                print(
+                    f"Command {args} did not terminate after {timeout} seconds "
+                    f" - sending SIGKILL"
+                )
+                process.kill()
+
+                # Even after killing the process we must still wait for it,
+                # otherwise we'll get the warning "Exception ignored in __del__".
+                await wait_for(process.wait(), timeout=1)
+
+
+async def async_check_output(*args, **kwargs):
+    async with async_process(
+        *args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs
+    ) as process:
+        stdout, stderr = await process.communicate()
+        if process.returncode == 0:
+            return stdout.decode(*DECODE_ARGS)
+        else:
+            raise CalledProcessError(
+                process.returncode, args,
+                stdout.decode(*DECODE_ARGS), stderr.decode(*DECODE_ARGS)
+            )
+
+
+# Return a list of the serial numbers of connected devices. Emulators will have
+# serials of the form "emulator-5678".
+async def list_devices():
+    serials = []
+    header_found = False
+
+    lines = (await async_check_output(adb, "devices")).splitlines()
+    for line in lines:
+        # Ignore blank lines, and all lines before the header.
+        line = line.strip()
+        if line == "List of devices attached":
+            header_found = True
+        elif header_found and line:
+            try:
+                serial, status = line.split()
+            except ValueError:
+                raise ValueError(f"failed to parse {line!r}")
+            if status == "device":
+                serials.append(serial)
+
+    if not header_found:
+        raise ValueError(f"failed to parse {lines}")
+    return serials
+
+
+async def find_device(context, initial_devices):
+    if context.managed:
+        print("Waiting for managed device - this may take several minutes")
+        while True:
+            new_devices = set(await list_devices()).difference(initial_devices)
+            if len(new_devices) == 0:
+                await asyncio.sleep(1)
+            elif len(new_devices) == 1:
+                serial = new_devices.pop()
+                print(f"Serial: {serial}")
+                return serial
+            else:
+                exit(f"Found more than one new device: {new_devices}")
+    else:
+        return context.connected
+
+
+# An older version of this script in #121595 filtered the logs by UID instead.
+# But logcat can't filter by UID until API level 31. If we ever switch back to
+# filtering by UID, we'll also have to filter by time so we only show messages
+# produced after the initial call to `stop_app`.
+#
+# We're more likely to miss the PID because it's shorter-lived, so there's a
+# workaround in PythonSuite.kt to stop it being *too* short-lived.
+async def find_pid(serial):
+    print("Waiting for app to start - this may take several minutes")
+    shown_error = False
+    while True:
+        try:
+            # `pidof` requires API level 24 or higher. The level 23 emulator
+            # includes it, but it doesn't work (it returns all processes).
+            pid = (await async_check_output(
+                adb, "-s", serial, "shell", "pidof", "-s", APP_ID
+            )).strip()
+        except CalledProcessError as e:
+            # If the app isn't running yet, pidof gives no output. So if there
+            # is output, there must have been some other error. However, this
+            # sometimes happens transiently, especially when running a managed
+            # emulator for the first time, so don't make it fatal.
+            if (e.stdout or e.stderr) and not shown_error:
+                print_called_process_error(e)
+                print("This may be transient, so continuing to wait")
+                shown_error = True
+        else:
+            # Some older devices (e.g. Nexus 4) return zero even when no process
+            # was found, so check whether we actually got any output.
+            if pid:
+                print(f"PID: {pid}")
+                return pid
+
+        # Loop fairly rapidly to avoid missing a short-lived process.
+        await asyncio.sleep(0.2)
+
+
+async def logcat_task(context, initial_devices):
+    # Gradle may need to do some large downloads of libraries and emulator
+    # images. This will happen during find_device in --managed mode, or find_pid
+    # in --connected mode.
+    startup_timeout = 600
+    serial = await wait_for(find_device(context, initial_devices), startup_timeout)
+    pid = await wait_for(find_pid(serial), startup_timeout)
+
+    # `--pid` requires API level 24 or higher.
+    args = [adb, "-s", serial, "logcat", "--pid", pid,  "--format", "tag"]
+    hidden_output = []
+    async with async_process(
+        *args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+    ) as process:
+        while line := (await process.stdout.readline()).decode(*DECODE_ARGS):
+            if match := re.fullmatch(r"([A-Z])/(.*)", line, re.DOTALL):
+                level, message = match.groups()
+            else:
+                # If the regex doesn't match, this is probably the second or
+                # subsequent line of a multi-line message. Python won't produce
+                # such messages, but other components might.
+                level, message = None, line
+
+            # Exclude high-volume messages which are rarely useful.
+            if context.verbose < 2 and "from python test_syslog" in message:
+                continue
+
+            # Put high-level messages on stderr so they're highlighted in the
+            # buildbot logs. This will include Python's own stderr.
+            stream = (
+                sys.stderr
+                if level in ["W", "E", "F"]  # WARNING, ERROR, FATAL (aka ASSERT)
+                else sys.stdout
+            )
+
+            # To simplify automated processing of the output, e.g. a buildbot
+            # posting a failure notice on a GitHub PR, we strip the level and
+            # tag indicators from Python's stdout and stderr.
+            for prefix in ["python.stdout: ", "python.stderr: "]:
+                if message.startswith(prefix):
+                    global logcat_started
+                    logcat_started = True
+                    stream.write(message.removeprefix(prefix))
+                    break
+            else:
+                if context.verbose:
+                    # Non-Python messages add a lot of noise, but they may
+                    # sometimes help explain a failure.
+                    stream.write(line)
+                else:
+                    hidden_output.append(line)
+
+        # If the device disconnects while logcat is running, which always
+        # happens in --managed mode, some versions of adb return non-zero.
+        # Distinguish this from a logcat startup error by checking whether we've
+        # received a message from Python yet.
+        status = await wait_for(process.wait(), timeout=1)
+        if status != 0 and not logcat_started:
+            raise CalledProcessError(status, args, "".join(hidden_output))
+
+
+def stop_app(serial):
+    run([adb, "-s", serial, "shell", "am", "force-stop", APP_ID], log=False)
+
+
+async def gradle_task(context):
+    env = os.environ.copy()
+    if context.managed:
+        task_prefix = context.managed
+    else:
+        task_prefix = "connected"
+        env["ANDROID_SERIAL"] = context.connected
+
+    args = [
+        gradlew, "--console", "plain", f"{task_prefix}DebugAndroidTest",
+        "-Pandroid.testInstrumentationRunnerArguments.pythonArgs="
+        + shlex.join(context.args),
+    ]
+    hidden_output = []
+    try:
+        async with async_process(
+            *args, cwd=TESTBED_DIR, env=env,
+            stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+        ) as process:
+            while line := (await process.stdout.readline()).decode(*DECODE_ARGS):
+                # Gradle may take several minutes to install SDK packages, so
+                # it's worth showing those messages even in non-verbose mode.
+                if context.verbose or line.startswith('Preparing "Install'):
+                    sys.stdout.write(line)
+                else:
+                    hidden_output.append(line)
+
+            status = await wait_for(process.wait(), timeout=1)
+            if status == 0:
+                exit(0)
+            else:
+                raise CalledProcessError(status, args)
+    finally:
+        # If logcat never started, then something has gone badly wrong, so the
+        # user probably wants to see the Gradle output even in non-verbose mode.
+        if hidden_output and not logcat_started:
+            sys.stdout.write("".join(hidden_output))
+
+        # Gradle does not stop the tests when interrupted.
+        if context.connected:
+            stop_app(context.connected)
+
+
+async def run_testbed(context):
+    setup_sdk()
+    setup_testbed()
+
+    if context.managed:
+        # In this mode, Gradle will create a device with an unpredictable name.
+        # So we save a list of the running devices before starting Gradle, and
+        # find_device then waits for a new device to appear.
+        initial_devices = await list_devices()
+    else:
+        # In case the previous shutdown was unclean, make sure the app isn't
+        # running, otherwise we might show logs from a previous run. This is
+        # unnecessary in --managed mode, because Gradle creates a new emulator
+        # every time.
+        stop_app(context.connected)
+        initial_devices = None
+
+    try:
+        async with asyncio.TaskGroup() as tg:
+            tg.create_task(logcat_task(context, initial_devices))
+            tg.create_task(gradle_task(context))
+    except* MySystemExit as e:
+        raise SystemExit(*e.exceptions[0].args) from None
+    except* CalledProcessError as e:
+        # Extract it from the ExceptionGroup so it can be handled by `main`.
+        raise e.exceptions[0]
+
+
+# Handle SIGTERM the same way as SIGINT. This ensures that if we're terminated
+# by the buildbot worker, we'll make an attempt to clean up our subprocesses.
+def install_signal_handler():
+    def signal_handler(*args):
+        os.kill(os.getpid(), signal.SIGINT)
+
+    signal.signal(signal.SIGTERM, signal_handler)
+
+
+def parse_args():
     parser = argparse.ArgumentParser()
     subcommands = parser.add_subparsers(dest="subcommand")
     build = subcommands.add_parser("build", help="Build everything")
@@ -206,8 +562,6 @@ def main():
                                        help="Run `make` for Android")
     subcommands.add_parser(
         "clean", help="Delete the cross-build directory")
-    subcommands.add_parser(
-        "setup-testbed", help="Download the testbed Gradle wrapper")
 
     for subcommand in build, configure_build, configure_host:
         subcommand.add_argument(
@@ -222,15 +576,74 @@ def main():
         subcommand.add_argument("args", nargs="*",
                                 help="Extra arguments to pass to `configure`")
 
-    context = parser.parse_args()
+    subcommands.add_parser(
+        "build-testbed", help="Build the testbed app")
+    test = subcommands.add_parser(
+        "test", help="Run the test suite")
+    test.add_argument(
+        "-v", "--verbose", action="count", default=0,
+        help="Show Gradle output, and non-Python logcat messages. "
+        "Use twice to include high-volume messages which are rarely useful.")
+    device_group = test.add_mutually_exclusive_group(required=True)
+    device_group.add_argument(
+        "--connected", metavar="SERIAL", help="Run on a connected device. "
+        "Connect it yourself, then get its serial from `adb devices`.")
+    device_group.add_argument(
+        "--managed", metavar="NAME", help="Run on a Gradle-managed device. "
+        "These are defined in `managedDevices` in testbed/app/build.gradle.kts.")
+    test.add_argument(
+        "args", nargs="*", help=f"Arguments for `python -m test`. "
+        f"Separate them from {SCRIPT_NAME}'s own arguments with `--`.")
+
+    return parser.parse_args()
+
+
+def main():
+    install_signal_handler()
+
+    # Under the buildbot, stdout is not a TTY, but we must still flush after
+    # every line to make sure our output appears in the correct order relative
+    # to the output of our subprocesses.
+    for stream in [sys.stdout, sys.stderr]:
+        stream.reconfigure(line_buffering=True)
+
+    context = parse_args()
     dispatch = {"configure-build": configure_build_python,
                 "make-build": make_build_python,
                 "configure-host": configure_host_python,
                 "make-host": make_host_python,
                 "build": build_all,
                 "clean": clean_all,
-                "setup-testbed": setup_testbed}
-    dispatch[context.subcommand](context)
+                "build-testbed": build_testbed,
+                "test": run_testbed}
+
+    try:
+        result = dispatch[context.subcommand](context)
+        if asyncio.iscoroutine(result):
+            asyncio.run(result)
+    except CalledProcessError as e:
+        print_called_process_error(e)
+        sys.exit(1)
+
+
+def print_called_process_error(e):
+    for stream_name in ["stdout", "stderr"]:
+        content = getattr(e, stream_name)
+        stream = getattr(sys, stream_name)
+        if content:
+            stream.write(content)
+            if not content.endswith("\n"):
+                stream.write("\n")
+
+    # Format the command so it can be copied into a shell. shlex uses single
+    # quotes, so we surround the whole command with double quotes.
+    args_joined = (
+        e.cmd if isinstance(e.cmd, str)
+        else " ".join(shlex.quote(str(arg)) for arg in e.cmd)
+    )
+    print(
+        f'Command "{args_joined}" returned exit status {e.returncode}'
+    )
 
 
 if __name__ == "__main__":
diff --git a/Android/testbed/app/build.gradle.kts b/Android/testbed/app/build.gradle.kts
index 7690d3fd86b2fd..6c17406c8724dc 100644
--- a/Android/testbed/app/build.gradle.kts
+++ b/Android/testbed/app/build.gradle.kts
@@ -1,18 +1,26 @@
 import com.android.build.api.variant.*
+import kotlin.math.max
 
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
 }
 
-val PYTHON_DIR = File(projectDir, "../../..").canonicalPath
+val PYTHON_DIR = file("../../..").canonicalPath
 val PYTHON_CROSS_DIR = "$PYTHON_DIR/cross-build"
+
 val ABIS = mapOf(
     "arm64-v8a" to "aarch64-linux-android",
     "x86_64" to "x86_64-linux-android",
-)
+).filter { file("$PYTHON_CROSS_DIR/${it.value}").exists() }
+if (ABIS.isEmpty()) {
+    throw GradleException(
+        "No Android ABIs found in $PYTHON_CROSS_DIR: see Android/README.md " +
+        "for building instructions."
+    )
+}
 
-val PYTHON_VERSION = File("$PYTHON_DIR/Include/patchlevel.h").useLines {
+val PYTHON_VERSION = file("$PYTHON_DIR/Include/patchlevel.h").useLines {
     for (line in it) {
         val match = """#define PY_VERSION\s+"(\d+\.\d+)""".toRegex().find(line)
         if (match != null) {
@@ -37,9 +45,22 @@ android {
         ndk.abiFilters.addAll(ABIS.keys)
         externalNativeBuild.cmake.arguments(
             "-DPYTHON_CROSS_DIR=$PYTHON_CROSS_DIR",
-            "-DPYTHON_VERSION=$PYTHON_VERSION")
+            "-DPYTHON_VERSION=$PYTHON_VERSION",
+            "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
+        )
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    val androidEnvFile = file("../../android-env.sh").absoluteFile
+    ndkVersion = androidEnvFile.useLines {
+        for (line in it) {
+            """ndk_version=(\S+)""".toRegex().find(line)?.let {
+                return@useLines it.groupValues[1]
+            }
+        }
+        throw GradleException("Failed to find NDK version in $androidEnvFile")
+    }
     externalNativeBuild.cmake {
         path("src/main/c/CMakeLists.txt")
     }
@@ -55,41 +76,81 @@ android {
     kotlinOptions {
         jvmTarget = "1.8"
     }
+
+    testOptions {
+        managedDevices {
+            localDevices {
+                create("minVersion") {
+                    device = "Small Phone"
+
+                    // Managed devices have a minimum API level of 27.
+                    apiLevel = max(27, defaultConfig.minSdk!!)
+
+                    // ATD devices are smaller and faster, but have a minimum
+                    // API level of 30.
+                    systemImageSource = if (apiLevel >= 30) "aosp-atd" else "aosp"
+                }
+
+                create("maxVersion") {
+                    device = "Small Phone"
+                    apiLevel = defaultConfig.targetSdk!!
+                    systemImageSource = "aosp-atd"
+                }
+            }
+
+            // If the previous test run succeeded and nothing has changed,
+            // Gradle thinks there's no need to run it again. Override that.
+            afterEvaluate {
+                (localDevices.names + listOf("connected")).forEach {
+                    tasks.named("${it}DebugAndroidTest") {
+                        outputs.upToDateWhen { false }
+                    }
+                }
+            }
+        }
+    }
 }
 
 dependencies {
     implementation("androidx.appcompat:appcompat:1.6.1")
     implementation("com.google.android.material:material:1.11.0")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
+    androidTestImplementation("androidx.test.ext:junit:1.1.5")
+    androidTestImplementation("androidx.test:rules:1.5.0")
 }
 
 
 // Create some custom tasks to copy Python and its standard library from
 // elsewhere in the repository.
 androidComponents.onVariants { variant ->
+    val pyPlusVer = "python$PYTHON_VERSION"
     generateTask(variant, variant.sources.assets!!) {
         into("python") {
-            for (triplet in ABIS.values) {
-                for (subDir in listOf("include", "lib")) {
-                    into(subDir) {
-                        from("$PYTHON_CROSS_DIR/$triplet/prefix/$subDir")
-                        include("python$PYTHON_VERSION/**")
-                        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
-                    }
+            into("include/$pyPlusVer") {
+                for (triplet in ABIS.values) {
+                    from("$PYTHON_CROSS_DIR/$triplet/prefix/include/$pyPlusVer")
                 }
+                duplicatesStrategy = DuplicatesStrategy.EXCLUDE
             }
-            into("lib/python$PYTHON_VERSION") {
-                // Uncomment this to pick up edits from the source directory
-                // without having to rerun `make install`.
-                // from("$PYTHON_DIR/Lib")
-                // duplicatesStrategy = DuplicatesStrategy.INCLUDE
+
+            into("lib/$pyPlusVer") {
+                // To aid debugging, the source directory takes priority.
+                from("$PYTHON_DIR/Lib")
+
+                // The cross-build directory provides ABI-specific files such as
+                // sysconfigdata.
+                for (triplet in ABIS.values) {
+                    from("$PYTHON_CROSS_DIR/$triplet/prefix/lib/$pyPlusVer")
+                }
 
                 into("site-packages") {
                     from("$projectDir/src/main/python")
                 }
+
+                duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+                exclude("**/__pycache__")
             }
         }
-        exclude("**/__pycache__")
     }
 
     generateTask(variant, variant.sources.jniLibs!!) {
diff --git a/Android/testbed/app/src/androidTest/java/org/python/testbed/PythonSuite.kt b/Android/testbed/app/src/androidTest/java/org/python/testbed/PythonSuite.kt
new file mode 100644
index 00000000000000..0e888ab71d87da
--- /dev/null
+++ b/Android/testbed/app/src/androidTest/java/org/python/testbed/PythonSuite.kt
@@ -0,0 +1,35 @@
+package org.python.testbed
+
+import androidx.test.annotation.UiThreadTest
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+
+@RunWith(AndroidJUnit4::class)
+class PythonSuite {
+    @Test
+    @UiThreadTest
+    fun testPython() {
+        val start = System.currentTimeMillis()
+        try {
+            val context =
+                InstrumentationRegistry.getInstrumentation().targetContext
+            val args =
+                InstrumentationRegistry.getArguments().getString("pythonArgs", "")
+            val status = PythonTestRunner(context).run(args)
+            assertEquals(0, status)
+        } finally {
+            // Make sure the process lives long enough for the test script to
+            // detect it (see `find_pid` in android.py).
+            val delay = 2000 - (System.currentTimeMillis() - start)
+            if (delay > 0) {
+                Thread.sleep(delay)
+            }
+        }
+    }
+}
diff --git a/Android/testbed/app/src/main/c/main_activity.c b/Android/testbed/app/src/main/c/main_activity.c
index 73aba4164d000f..69251332d48890 100644
--- a/Android/testbed/app/src/main/c/main_activity.c
+++ b/Android/testbed/app/src/main/c/main_activity.c
@@ -84,7 +84,7 @@ static char *redirect_stream(StreamInfo *si) {
     return 0;
 }
 
-JNIEXPORT void JNICALL Java_org_python_testbed_MainActivity_redirectStdioToLogcat(
+JNIEXPORT void JNICALL Java_org_python_testbed_PythonTestRunner_redirectStdioToLogcat(
     JNIEnv *env, jobject obj
 ) {
     for (StreamInfo *si = STREAMS; si->file; si++) {
@@ -100,7 +100,7 @@ JNIEXPORT void JNICALL Java_org_python_testbed_MainActivity_redirectStdioToLogca
 }
 
 
-// --- Python intialization ----------------------------------------------------
+// --- Python initialization ---------------------------------------------------
 
 static PyStatus set_config_string(
     JNIEnv *env, PyConfig *config, wchar_t **config_str, jstring value
@@ -115,7 +115,7 @@ static void throw_status(JNIEnv *env, PyStatus status) {
     throw_runtime_exception(env, status.err_msg ? status.err_msg : "");
 }
 
-JNIEXPORT void JNICALL Java_org_python_testbed_MainActivity_runPython(
+JNIEXPORT int JNICALL Java_org_python_testbed_PythonTestRunner_runPython(
     JNIEnv *env, jobject obj, jstring home, jstring runModule
 ) {
     PyConfig config;
@@ -125,13 +125,13 @@ JNIEXPORT void JNICALL Java_org_python_testbed_MainActivity_runPython(
     status = set_config_string(env, &config, &config.home, home);
     if (PyStatus_Exception(status)) {
         throw_status(env, status);
-        return;
+        return 1;
     }
 
     status = set_config_string(env, &config, &config.run_module, runModule);
     if (PyStatus_Exception(status)) {
         throw_status(env, status);
-        return;
+        return 1;
     }
 
     // Some tests generate SIGPIPE and SIGXFSZ, which should be ignored.
@@ -140,8 +140,8 @@ JNIEXPORT void JNICALL Java_org_python_testbed_MainActivity_runPython(
     status = Py_InitializeFromConfig(&config);
     if (PyStatus_Exception(status)) {
         throw_status(env, status);
-        return;
+        return 1;
     }
 
-    Py_RunMain();
+    return Py_RunMain();
 }
diff --git a/Android/testbed/app/src/main/java/org/python/testbed/MainActivity.kt b/Android/testbed/app/src/main/java/org/python/testbed/MainActivity.kt
index 5a590d5d04e954..c4bf6cbe83d8cd 100644
--- a/Android/testbed/app/src/main/java/org/python/testbed/MainActivity.kt
+++ b/Android/testbed/app/src/main/java/org/python/testbed/MainActivity.kt
@@ -1,38 +1,56 @@
 package org.python.testbed
 
+import android.content.Context
 import android.os.*
 import android.system.Os
 import android.widget.TextView
 import androidx.appcompat.app.*
 import java.io.*
 
+
+// Launching the tests from an activity is OK for a quick check, but for
+// anything more complicated it'll be more convenient to use `android.py test`
+// to launch the tests via PythonSuite.
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        val status = PythonTestRunner(this).run("-W -uall")
+        findViewById<TextView>(R.id.tvHello).text = "Exit status $status"
+    }
+}
+
+
+class PythonTestRunner(val context: Context) {
+    /** @param args Extra arguments for `python -m test`.
+     * @return The Python exit status: zero if the tests passed, nonzero if
+     * they failed. */
+    fun run(args: String = "") : Int {
+        Os.setenv("PYTHON_ARGS", args, true)
 
         // Python needs this variable to help it find the temporary directory,
         // but Android only sets it on API level 33 and later.
-        Os.setenv("TMPDIR", cacheDir.toString(), false)
+        Os.setenv("TMPDIR", context.cacheDir.toString(), false)
 
         val pythonHome = extractAssets()
         System.loadLibrary("main_activity")
         redirectStdioToLogcat()
-        runPython(pythonHome.toString(), "main")
-        findViewById<TextView>(R.id.tvHello).text = "Python complete"
+
+        // The main module is in src/main/python/main.py.
+        return runPython(pythonHome.toString(), "main")
     }
 
     private fun extractAssets() : File {
-        val pythonHome = File(filesDir, "python")
+        val pythonHome = File(context.filesDir, "python")
         if (pythonHome.exists() && !pythonHome.deleteRecursively()) {
             throw RuntimeException("Failed to delete $pythonHome")
         }
-        extractAssetDir("python", filesDir)
+        extractAssetDir("python", context.filesDir)
         return pythonHome
     }
 
     private fun extractAssetDir(path: String, targetDir: File) {
-        val names = assets.list(path)
+        val names = context.assets.list(path)
             ?: throw RuntimeException("Failed to list $path")
         val targetSubdir = File(targetDir, path)
         if (!targetSubdir.mkdirs()) {
@@ -43,7 +61,7 @@ class MainActivity : AppCompatActivity() {
             val subPath = "$path/$name"
             val input: InputStream
             try {
-                input = assets.open(subPath)
+                input = context.assets.open(subPath)
             } catch (e: FileNotFoundException) {
                 extractAssetDir(subPath, targetDir)
                 continue
@@ -57,5 +75,5 @@ class MainActivity : AppCompatActivity() {
     }
 
     private external fun redirectStdioToLogcat()
-    private external fun runPython(home: String, runModule: String)
-}
\ No newline at end of file
+    private external fun runPython(home: String, runModule: String) : Int
+}
diff --git a/Android/testbed/app/src/main/python/main.py b/Android/testbed/app/src/main/python/main.py
index a1b6def34ede81..d6941b14412fcc 100644
--- a/Android/testbed/app/src/main/python/main.py
+++ b/Android/testbed/app/src/main/python/main.py
@@ -1,17 +1,32 @@
+import os
 import runpy
+import shlex
 import signal
 import sys
 
 # Some tests use SIGUSR1, but that's blocked by default in an Android app in
-# order to make it available to `sigwait` in the "Signal Catcher" thread. That
-# thread's functionality is only relevant to the JVM ("forcing GC (no HPROF) and
-# profile save"), so disabling it should not weaken the tests.
+# order to make it available to `sigwait` in the Signal Catcher thread.
+# (https://cs.android.com/android/platform/superproject/+/android14-qpr3-release:art/runtime/signal_catcher.cc).
+# That thread's functionality is only useful for debugging the JVM, so disabling
+# it should not weaken the tests.
+#
+# There's no safe way of stopping the thread completely (#123982), but simply
+# unblocking SIGUSR1 is enough to fix most tests.
+#
+# However, in tests that generate multiple different signals in quick
+# succession, it's possible for SIGUSR1 to arrive while the main thread is busy
+# running the C-level handler for a different signal. In that case, the SIGUSR1
+# may be sent to the Signal Catcher thread instead, which will generate a log
+# message containing the text "reacting to signal".
+#
+# Such tests may need to be changed in one of the following ways:
+#   * Use a signal other than SIGUSR1 (e.g. test_stress_delivery_simultaneous in
+#     test_signal.py).
+#   * Send the signal to a specific thread rather than the whole process (e.g.
+#     test_signals in test_threadsignals.py.
 signal.pthread_sigmask(signal.SIG_UNBLOCK, [signal.SIGUSR1])
 
-# To run specific tests, or pass any other arguments to the test suite, edit
-# this command line.
-sys.argv[1:] = [
-    "--use", "all,-cpu",
-    "--verbose3",
-]
+sys.argv[1:] = shlex.split(os.environ["PYTHON_ARGS"])
+
+# The test module will call sys.exit to indicate whether the tests passed.
 runpy.run_module("test")
diff --git a/Android/testbed/build.gradle.kts b/Android/testbed/build.gradle.kts
index 53f4a67287fcc5..4d1d6f87594da3 100644
--- a/Android/testbed/build.gradle.kts
+++ b/Android/testbed/build.gradle.kts
@@ -1,5 +1,5 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id("com.android.application") version "8.2.2" apply false
+    id("com.android.application") version "8.6.1" apply false
     id("org.jetbrains.kotlin.android") version "1.9.22" apply false
-}
\ No newline at end of file
+}
diff --git a/Android/testbed/gradle.properties b/Android/testbed/gradle.properties
index 3c5031eb7d63f7..e9f345c8c26250 100644
--- a/Android/testbed/gradle.properties
+++ b/Android/testbed/gradle.properties
@@ -20,4 +20,9 @@ kotlin.code.style=official
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
-android.nonTransitiveRClass=true
\ No newline at end of file
+android.nonTransitiveRClass=true
+
+# By default, the app will be uninstalled after the tests finish (apparently
+# after 10 seconds in case of an unclean shutdown). We disable this, because
+# when using android.py it can conflict with the installation of the next run.
+android.injected.androidTest.leaveApksInstalledAfterRun=true
diff --git a/Android/testbed/gradle/wrapper/gradle-wrapper.properties b/Android/testbed/gradle/wrapper/gradle-wrapper.properties
index 2dc3339a3ef213..36529c896426b0 100644
--- a/Android/testbed/gradle/wrapper/gradle-wrapper.properties
+++ b/Android/testbed/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Mon Feb 19 20:29:06 GMT 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/Doc/.ruff.toml b/Doc/.ruff.toml
new file mode 100644
index 00000000000000..111ce03b91df38
--- /dev/null
+++ b/Doc/.ruff.toml
@@ -0,0 +1,42 @@
+target-version = "py312"  # Align with the version in oldest_supported_sphinx
+fix = true
+output-format = "full"
+line-length = 79
+extend-exclude = [
+    "includes/*",
+    # Temporary exclusions:
+    "tools/extensions/pyspecific.py",
+]
+
+[lint]
+preview = true
+select = [
+    "C4",    # flake8-comprehensions
+    "B",     # flake8-bugbear
+    "E",     # pycodestyle
+    "F",     # pyflakes
+    "FA",    # flake8-future-annotations
+    "FLY",   # flynt
+    "FURB",  # refurb
+    "G",     # flake8-logging-format
+    "I",     # isort
+    "LOG",   # flake8-logging
+    "N",     # pep8-naming
+    "PERF",  # perflint
+    "PGH",   # pygrep-hooks
+    "PT",    # flake8-pytest-style
+    "TCH",   # flake8-type-checking
+    "UP",    # pyupgrade
+    "W",     # pycodestyle
+]
+ignore = [
+    "E501",  # Ignore line length errors (we use auto-formatting)
+]
+
+[format]
+preview = true
+quote-style = "preserve"
+docstring-code-format = true
+exclude = [
+    "tools/extensions/lexers/*",
+]
diff --git a/Doc/Makefile b/Doc/Makefile
index dd068c520ad60c..b8896da4a91869 100644
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -6,6 +6,7 @@
 # You can set these variables from the command line.
 PYTHON       = python3
 VENVDIR      = ./venv
+UV           = uv
 SPHINXBUILD  = PATH=$(VENVDIR)/bin:$$PATH sphinx-build
 BLURB        = PATH=$(VENVDIR)/bin:$$PATH blurb
 JOBS         = auto
@@ -13,15 +14,15 @@ PAPER        =
 SOURCES      =
 DISTVERSION  = $(shell $(PYTHON) tools/extensions/patchlevel.py)
 REQUIREMENTS = requirements.txt
-SPHINXERRORHANDLING = -W
+SPHINXERRORHANDLING = --fail-on-warning
 
 # Internal variables.
-PAPEROPT_a4     = -D latex_elements.papersize=a4paper
-PAPEROPT_letter = -D latex_elements.papersize=letterpaper
+PAPEROPT_a4     = --define latex_elements.papersize=a4paper
+PAPEROPT_letter = --define latex_elements.papersize=letterpaper
 
-ALLSPHINXOPTS = -b $(BUILDER) \
-                -d build/doctrees \
-                -j $(JOBS) \
+ALLSPHINXOPTS = --builder $(BUILDER) \
+                --doctree-dir build/doctrees \
+                --jobs $(JOBS) \
                 $(PAPEROPT_$(PAPER)) \
                 $(SPHINXOPTS) $(SPHINXERRORHANDLING) \
                 . build/$(BUILDER) $(SOURCES)
@@ -32,6 +33,7 @@ help:
 	@echo "  clean      to remove build files"
 	@echo "  venv       to create a venv with necessary tools"
 	@echo "  html       to make standalone HTML files"
+	@echo "  gettext    to generate POT files"
 	@echo "  htmlview   to open the index page built by the html target in your browser"
 	@echo "  htmllive   to rebuild and reload HTML files in your browser"
 	@echo "  htmlhelp   to make HTML files and a HTML help project"
@@ -140,14 +142,19 @@ pydoc-topics: build
 	@echo "Building finished; now run this:" \
 	      "cp build/pydoc-topics/topics.py ../Lib/pydoc_data/topics.py"
 
+.PHONY: gettext
+gettext: BUILDER = gettext
+gettext: override SPHINXOPTS := --doctree-dir build/doctrees-gettext $(SPHINXOPTS)
+gettext: build
+
 .PHONY: htmlview
 htmlview: html
 	$(PYTHON) -c "import os, webbrowser; webbrowser.open('file://' + os.path.realpath('build/html/index.html'))"
 
 .PHONY: htmllive
-htmllive: SPHINXBUILD = $(VENVDIR)/bin/sphinx-autobuild
+htmllive: SPHINXBUILD = PATH=$(VENVDIR)/bin:$$PATH sphinx-autobuild
 htmllive: SPHINXOPTS = --re-ignore="/venv/" --open-browser --delay 0
-htmllive: html
+htmllive: _ensure-sphinx-autobuild html
 
 .PHONY: clean
 clean: clean-venv
@@ -164,92 +171,149 @@ venv:
 		echo "To recreate it, remove it first with \`make clean-venv'."; \
 	else \
 		echo "Creating venv in $(VENVDIR)"; \
-		$(PYTHON) -m venv $(VENVDIR); \
-		$(VENVDIR)/bin/python3 -m pip install --upgrade pip; \
-		$(VENVDIR)/bin/python3 -m pip install -r $(REQUIREMENTS); \
+		if $(UV) --version >/dev/null 2>&1; then \
+			$(UV) venv --python=$(PYTHON) $(VENVDIR); \
+			VIRTUAL_ENV=$(VENVDIR) $(UV) pip install -r $(REQUIREMENTS); \
+		else \
+			$(PYTHON) -m venv $(VENVDIR); \
+			$(VENVDIR)/bin/python3 -m pip install --upgrade pip; \
+			$(VENVDIR)/bin/python3 -m pip install -r $(REQUIREMENTS); \
+		fi; \
 		echo "The venv has been created in the $(VENVDIR) directory"; \
 	fi
 
+.PHONY: dist-no-html
+dist-no-html: dist-text dist-pdf dist-epub dist-texinfo
+
 .PHONY: dist
 dist:
 	rm -rf dist
 	mkdir -p dist
-
+	$(MAKE) dist-html
+	$(MAKE) dist-text
+	$(MAKE) dist-pdf
+	$(MAKE) dist-epub
+	$(MAKE) dist-texinfo
+
+.PHONY: dist-html
+dist-html:
 	# archive the HTML
-	make html
+	@echo "Building HTML..."
+	mkdir -p dist
+	rm -rf build/html
+	find dist -name 'python-$(DISTVERSION)-docs-html*' -exec rm -rf {} \;
+	$(MAKE) html
 	cp -pPR build/html dist/python-$(DISTVERSION)-docs-html
 	tar -C dist -cf dist/python-$(DISTVERSION)-docs-html.tar python-$(DISTVERSION)-docs-html
 	bzip2 -9 -k dist/python-$(DISTVERSION)-docs-html.tar
 	(cd dist; zip -q -r -9 python-$(DISTVERSION)-docs-html.zip python-$(DISTVERSION)-docs-html)
 	rm -r dist/python-$(DISTVERSION)-docs-html
 	rm dist/python-$(DISTVERSION)-docs-html.tar
+	@echo "Build finished and archived!"
 
+.PHONY: dist-text
+dist-text:
 	# archive the text build
-	make text
+	@echo "Building text..."
+	mkdir -p dist
+	rm -rf build/text
+	find dist -name 'python-$(DISTVERSION)-docs-text*' -exec rm -rf {} \;
+	$(MAKE) text
 	cp -pPR build/text dist/python-$(DISTVERSION)-docs-text
 	tar -C dist -cf dist/python-$(DISTVERSION)-docs-text.tar python-$(DISTVERSION)-docs-text
 	bzip2 -9 -k dist/python-$(DISTVERSION)-docs-text.tar
 	(cd dist; zip -q -r -9 python-$(DISTVERSION)-docs-text.zip python-$(DISTVERSION)-docs-text)
 	rm -r dist/python-$(DISTVERSION)-docs-text
 	rm dist/python-$(DISTVERSION)-docs-text.tar
+	@echo "Build finished and archived!"
 
+.PHONY: dist-pdf
+dist-pdf:
 	# archive the A4 latex
+	@echo "Building LaTeX (A4 paper)..."
+	mkdir -p dist
 	rm -rf build/latex
-	make latex PAPER=a4
-	-sed -i 's/makeindex/makeindex -q/' build/latex/Makefile
-	(cd build/latex; make clean && make all-pdf && make FMT=pdf zip bz2)
+	find dist -name 'python-$(DISTVERSION)-docs-pdf*' -exec rm -rf {} \;
+	$(MAKE) latex PAPER=a4
+	# remove zip & bz2 dependency on all-pdf,
+	# as otherwise the full latexmk process is run twice.
+	# ($$ is needed to escape the $; https://www.gnu.org/software/make/manual/make.html#Basics-of-Variable-References)
+	-sed -i 's/: all-$$(FMT)/:/' build/latex/Makefile
+	(cd build/latex; $(MAKE) clean && $(MAKE) --jobs=$$((`nproc`+1)) --output-sync LATEXMKOPTS='-quiet' all-pdf && $(MAKE) FMT=pdf zip bz2)
 	cp build/latex/docs-pdf.zip dist/python-$(DISTVERSION)-docs-pdf-a4.zip
 	cp build/latex/docs-pdf.tar.bz2 dist/python-$(DISTVERSION)-docs-pdf-a4.tar.bz2
+	@echo "Build finished and archived!"
 
-	# archive the letter latex
-	rm -rf build/latex
-	make latex PAPER=letter
-	-sed -i 's/makeindex/makeindex -q/' build/latex/Makefile
-	(cd build/latex; make clean && make all-pdf && make FMT=pdf zip bz2)
-	cp build/latex/docs-pdf.zip dist/python-$(DISTVERSION)-docs-pdf-letter.zip
-	cp build/latex/docs-pdf.tar.bz2 dist/python-$(DISTVERSION)-docs-pdf-letter.tar.bz2
-
+.PHONY: dist-epub
+dist-epub:
 	# copy the epub build
+	@echo "Building EPUB..."
+	mkdir -p dist
 	rm -rf build/epub
-	make epub
+	rm -f dist/python-$(DISTVERSION)-docs.epub
+	$(MAKE) epub
 	cp -pPR build/epub/Python.epub dist/python-$(DISTVERSION)-docs.epub
+	@echo "Build finished and archived!"
 
+.PHONY: dist-texinfo
+dist-texinfo:
 	# archive the texinfo build
+	@echo "Building Texinfo..."
+	mkdir -p dist
 	rm -rf build/texinfo
-	make texinfo
-	make info --directory=build/texinfo
+	find dist -name 'python-$(DISTVERSION)-docs-texinfo*' -exec rm -rf {} \;
+	$(MAKE) texinfo
+	$(MAKE) info --directory=build/texinfo
 	cp -pPR build/texinfo dist/python-$(DISTVERSION)-docs-texinfo
 	tar -C dist -cf dist/python-$(DISTVERSION)-docs-texinfo.tar python-$(DISTVERSION)-docs-texinfo
 	bzip2 -9 -k dist/python-$(DISTVERSION)-docs-texinfo.tar
 	(cd dist; zip -q -r -9 python-$(DISTVERSION)-docs-texinfo.zip python-$(DISTVERSION)-docs-texinfo)
 	rm -r dist/python-$(DISTVERSION)-docs-texinfo
 	rm dist/python-$(DISTVERSION)-docs-texinfo.tar
+	@echo "Build finished and archived!"
+
+.PHONY: _ensure-package
+_ensure-package: venv
+	if $(UV) --version >/dev/null 2>&1; then \
+		VIRTUAL_ENV=$(VENVDIR) $(UV) pip install $(PACKAGE); \
+	else \
+		$(VENVDIR)/bin/python3 -m pip install $(PACKAGE); \
+	fi
+
+.PHONY: _ensure-pre-commit
+_ensure-pre-commit:
+	$(MAKE) _ensure-package PACKAGE=pre-commit
+
+.PHONY: _ensure-sphinx-autobuild
+_ensure-sphinx-autobuild:
+	$(MAKE) _ensure-package PACKAGE=sphinx-autobuild
 
 .PHONY: check
-check: venv
-	$(VENVDIR)/bin/python3 -m pre_commit --version > /dev/null || $(VENVDIR)/bin/python3 -m pip install pre-commit
+check: _ensure-pre-commit
 	$(VENVDIR)/bin/python3 -m pre_commit run --all-files
 
 .PHONY: serve
 serve:
-	@echo "The serve target was removed, use htmlview instead (see bpo-36329)"
+	@echo "The serve target was removed, use htmllive instead (see gh-80510)"
 
 # Targets for daily automated doc build
 # By default, Sphinx only rebuilds pages where the page content has changed.
 # This means it doesn't always pick up changes to preferred link targets, etc
 # To ensure such changes are picked up, we build the published docs with
-# `-E` (to ignore the cached environment) and `-a` (to ignore already existing
-# output files)
+# ``--fresh-env`` (to ignore the cached environment) and ``--write-all``
+# (to ignore already existing output files)
 
 # for development releases: always build
 .PHONY: autobuild-dev
+autobuild-dev: DISTVERSION = $(shell $(PYTHON) tools/extensions/patchlevel.py --short)
 autobuild-dev:
-	make dist SPHINXOPTS='$(SPHINXOPTS) -Ea -A daily=1'
+	$(MAKE) dist-no-html SPHINXOPTS='$(SPHINXOPTS) --fresh-env --write-all --html-define daily=1' DISTVERSION=$(DISTVERSION)
 
-# for quick rebuilds (HTML only)
+# for HTML-only rebuilds
 .PHONY: autobuild-dev-html
+autobuild-dev-html: DISTVERSION = $(shell $(PYTHON) tools/extensions/patchlevel.py --short)
 autobuild-dev-html:
-	make html SPHINXOPTS='$(SPHINXOPTS) -Ea -A daily=1'
+	$(MAKE) dist-html SPHINXOPTS='$(SPHINXOPTS) --fresh-env --write-all --html-define daily=1' DISTVERSION=$(DISTVERSION)
 
 # for stable releases: only build if not in pre-release stage (alpha, beta)
 # release candidate downloads are okay, since the stable tree can be in that stage
@@ -259,7 +323,7 @@ autobuild-stable:
 		echo "Not building; $(DISTVERSION) is not a release version."; \
 		exit 1;; \
 	esac
-	@make autobuild-dev
+	@$(MAKE) autobuild-dev
 
 .PHONY: autobuild-stable-html
 autobuild-stable-html:
@@ -267,4 +331,4 @@ autobuild-stable-html:
 		echo "Not building; $(DISTVERSION) is not a release version."; \
 		exit 1;; \
 	esac
-	@make autobuild-dev-html
+	@$(MAKE) autobuild-dev-html
diff --git a/Doc/README.rst b/Doc/README.rst
index a3bb5fa5445c23..2d1148753e0c6b 100644
--- a/Doc/README.rst
+++ b/Doc/README.rst
@@ -28,7 +28,7 @@ install the tools into there.
 Using make
 ----------
 
-To get started on UNIX, you can create a virtual environment and build
+To get started on Unix, you can create a virtual environment and build
 documentation with the commands::
 
   make venv
@@ -40,13 +40,13 @@ If you'd like to create the virtual environment in a different location,
 you can specify it using the ``VENVDIR`` variable.
 
 You can also skip creating the virtual environment altogether, in which case
-the Makefile will look for instances of ``sphinx-build`` and ``blurb``
+the ``Makefile`` will look for instances of ``sphinx-build`` and ``blurb``
 installed on your process ``PATH`` (configurable with the ``SPHINXBUILD`` and
 ``BLURB`` variables).
 
-On Windows, we try to emulate the Makefile as closely as possible with a
+On Windows, we try to emulate the ``Makefile`` as closely as possible with a
 ``make.bat`` file. If you need to specify the Python interpreter to use,
-set the PYTHON environment variable.
+set the ``PYTHON`` environment variable.
 
 Available make targets are:
 
@@ -62,15 +62,19 @@ Available make targets are:
 * "htmlview", which re-uses the "html" builder, but then opens the main page
   in your default web browser.
 
+* "htmllive", which re-uses the "html" builder, rebuilds the docs,
+  starts a local server, and automatically reloads the page in your browser
+  when you make changes to reST files (Unix only).
+
 * "htmlhelp", which builds HTML files and a HTML Help project file usable to
   convert them into a single Compiled HTML (.chm) file -- these are popular
   under Microsoft Windows, but very handy on every platform.
 
   To create the CHM file, you need to run the Microsoft HTML Help Workshop
-  over the generated project (.hhp) file.  The make.bat script does this for
+  over the generated project (.hhp) file.  The ``make.bat`` script does this for
   you on Windows.
 
-* "latex", which builds LaTeX source files as input to "pdflatex" to produce
+* "latex", which builds LaTeX source files as input to ``pdflatex`` to produce
   PDF documents.
 
 * "text", which builds a plain text file for each source file.
@@ -95,8 +99,6 @@ Available make targets are:
 
 * "check", which checks for frequent markup errors.
 
-* "serve", which serves the build/html directory on port 8000.
-
 * "dist", (Unix only) which creates distributable archives of HTML, text,
   PDF, and EPUB builds.
 
@@ -131,8 +133,5 @@ Bugs in the content should be reported to the
 
 Bugs in the toolset should be reported to the tools themselves.
 
-You can also send a mail to the Python Documentation Team at docs@python.org,
-and we will process your request as soon as possible.
-
-If you want to help the Documentation Team, you are always welcome.  Just send
-a mail to docs@python.org.
+To help with the documentation, or report any problems, please leave a message
+on `discuss.python.org <https://discuss.python.org/c/documentation>`_.
diff --git a/Doc/about.rst b/Doc/about.rst
index 5e6160ff2700ed..8f635d7f743a98 100644
--- a/Doc/about.rst
+++ b/Doc/about.rst
@@ -1,10 +1,11 @@
-=====================
-About these documents
-=====================
+========================
+About this documentation
+========================
 
 
-These documents are generated from `reStructuredText`_ sources by `Sphinx`_, a
-document processor specifically written for the Python documentation.
+Python's documentation is generated from `reStructuredText`_ sources
+using `Sphinx`_, a documentation generator originally created for Python
+and now maintained as an independent project.
 
 .. _reStructuredText: https://docutils.sourceforge.io/rst.html
 .. _Sphinx: https://www.sphinx-doc.org/
@@ -20,14 +21,14 @@ volunteers are always welcome!
 Many thanks go to:
 
 * Fred L. Drake, Jr., the creator of the original Python documentation toolset
-  and writer of much of the content;
+  and author of much of the content;
 * the `Docutils <https://docutils.sourceforge.io/>`_ project for creating
   reStructuredText and the Docutils suite;
 * Fredrik Lundh for his Alternative Python Reference project from which Sphinx
   got many good ideas.
 
 
-Contributors to the Python Documentation
+Contributors to the Python documentation
 ----------------------------------------
 
 Many people have contributed to the Python language, the Python standard
diff --git a/Doc/c-api/allocation.rst b/Doc/c-api/allocation.rst
index b3609c233156b6..e6ff40ab46e7c2 100644
--- a/Doc/c-api/allocation.rst
+++ b/Doc/c-api/allocation.rst
@@ -15,10 +15,8 @@ Allocating Objects on the Heap
 .. c:function:: PyObject* PyObject_Init(PyObject *op, PyTypeObject *type)
 
    Initialize a newly allocated object *op* with its type and initial
-   reference.  Returns the initialized object.  If *type* indicates that the
-   object participates in the cyclic garbage detector, it is added to the
-   detector's set of observed objects. Other fields of the object are not
-   affected.
+   reference.  Returns the initialized object.  Other fields of the object are
+   not affected.
 
 
 .. c:function:: PyVarObject* PyObject_InitVar(PyVarObject *op, PyTypeObject *type, Py_ssize_t size)
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index 834aae9372fe3b..209056ef2f8bce 100644
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -229,12 +229,24 @@ There are three ways strings and buffers can be converted to C:
 Numbers
 -------
 
+These formats allow representing Python numbers or single characters as C numbers.
+Formats that require :class:`int`, :class:`float` or :class:`complex` can
+also use the corresponding special methods :meth:`~object.__index__`,
+:meth:`~object.__float__` or :meth:`~object.__complex__` to convert
+the Python object to the required type.
+
+For signed integer formats, :exc:`OverflowError` is raised if the value
+is out of range for the C type.
+For unsigned integer formats, no range checking is done --- the
+most significant bits are silently truncated when the receiving field is too
+small to receive the value.
+
 ``b`` (:class:`int`) [unsigned char]
-   Convert a nonnegative Python integer to an unsigned tiny int, stored in a C
+   Convert a nonnegative Python integer to an unsigned tiny integer, stored in a C
    :c:expr:`unsigned char`.
 
 ``B`` (:class:`int`) [unsigned char]
-   Convert a Python integer to a tiny int without overflow checking, stored in a C
+   Convert a Python integer to a tiny integer without overflow checking, stored in a C
    :c:expr:`unsigned char`.
 
 ``h`` (:class:`int`) [short int]
@@ -280,10 +292,10 @@ Numbers
    length 1, to a C :c:expr:`int`.
 
 ``f`` (:class:`float`) [float]
-   Convert a Python floating point number to a C :c:expr:`float`.
+   Convert a Python floating-point number to a C :c:expr:`float`.
 
 ``d`` (:class:`float`) [double]
-   Convert a Python floating point number to a C :c:expr:`double`.
+   Convert a Python floating-point number to a C :c:expr:`double`.
 
 ``D`` (:class:`complex`) [Py_complex]
    Convert a Python complex number to a C :c:type:`Py_complex` structure.
@@ -307,7 +319,7 @@ Other objects
 
 .. _o_ampersand:
 
-``O&`` (object) [*converter*, *anything*]
+``O&`` (object) [*converter*, *address*]
    Convert a Python object to a C variable through a *converter* function.  This
    takes two arguments: the first is a function, the second is the address of a C
    variable (of arbitrary type), converted to :c:expr:`void *`.  The *converter*
@@ -321,14 +333,20 @@ Other objects
    the conversion has failed.  When the conversion fails, the *converter* function
    should raise an exception and leave the content of *address* unmodified.
 
-   If the *converter* returns ``Py_CLEANUP_SUPPORTED``, it may get called a
+   .. c:macro:: Py_CLEANUP_SUPPORTED
+      :no-typesetting:
+
+   If the *converter* returns :c:macro:`!Py_CLEANUP_SUPPORTED`, it may get called a
    second time if the argument parsing eventually fails, giving the converter a
    chance to release any memory that it had already allocated. In this second
    call, the *object* parameter will be ``NULL``; *address* will have the same value
    as in the original call.
 
+   Examples of converters: :c:func:`PyUnicode_FSConverter` and
+   :c:func:`PyUnicode_FSDecoder`.
+
    .. versionchanged:: 3.1
-      ``Py_CLEANUP_SUPPORTED`` was added.
+      :c:macro:`!Py_CLEANUP_SUPPORTED` was added.
 
 ``p`` (:class:`bool`) [int]
    Tests the value passed in for truth (a boolean **p**\ redicate) and converts
@@ -344,12 +362,6 @@ Other objects
    in *items*.  The C arguments must correspond to the individual format units in
    *items*.  Format units for sequences may be nested.
 
-It is possible to pass "long" integers (integers whose value exceeds the
-platform's :c:macro:`LONG_MAX`) however no proper range checking is done --- the
-most significant bits are silently truncated when the receiving field is too
-small to receive the value (actually, the semantics are inherited from downcasts
-in C --- your mileage may vary).
-
 A few other characters have a meaning in a format string.  These may not occur
 inside nested parentheses.  They are:
 
@@ -642,10 +654,10 @@ Building values
       object of length 1.
 
    ``d`` (:class:`float`) [double]
-      Convert a C :c:expr:`double` to a Python floating point number.
+      Convert a C :c:expr:`double` to a Python floating-point number.
 
    ``f`` (:class:`float`) [float]
-      Convert a C :c:expr:`float` to a Python floating point number.
+      Convert a C :c:expr:`float` to a Python floating-point number.
 
    ``D`` (:class:`complex`) [Py_complex \*]
       Convert a C :c:type:`Py_complex` structure to a Python complex number.
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index 1e1cabdf242bd1..dc43a3d5fcb094 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -147,9 +147,9 @@ a buffer, see :c:func:`PyObject_GetBuffer`.
       or a :c:macro:`PyBUF_WRITABLE` request, the consumer must disregard
       :c:member:`~Py_buffer.itemsize` and assume ``itemsize == 1``.
 
-   .. c:member:: const char *format
+   .. c:member:: char *format
 
-      A *NUL* terminated string in :mod:`struct` module style syntax describing
+      A *NULL* terminated string in :mod:`struct` module style syntax describing
       the contents of a single item. If this is ``NULL``, ``"B"`` (unsigned bytes)
       is assumed.
 
@@ -244,7 +244,6 @@ The following fields are not influenced by *flags* and must always be filled in
 with the correct values: :c:member:`~Py_buffer.obj`, :c:member:`~Py_buffer.buf`,
 :c:member:`~Py_buffer.len`, :c:member:`~Py_buffer.itemsize`, :c:member:`~Py_buffer.ndim`.
 
-
 readonly, format
 ~~~~~~~~~~~~~~~~
 
@@ -253,7 +252,8 @@ readonly, format
       Controls the :c:member:`~Py_buffer.readonly` field. If set, the exporter
       MUST provide a writable buffer or else report failure. Otherwise, the
       exporter MAY provide either a read-only or writable buffer, but the choice
-      MUST be consistent for all consumers.
+      MUST be consistent for all consumers. For example, :c:expr:`PyBUF_SIMPLE | PyBUF_WRITABLE`
+      can be used to request a simple writable buffer.
 
    .. c:macro:: PyBUF_FORMAT
 
@@ -265,8 +265,9 @@ readonly, format
 Since :c:macro:`PyBUF_SIMPLE` is defined as 0, :c:macro:`PyBUF_WRITABLE`
 can be used as a stand-alone flag to request a simple writable buffer.
 
-:c:macro:`PyBUF_FORMAT` can be \|'d to any of the flags except :c:macro:`PyBUF_SIMPLE`.
-The latter already implies format ``B`` (unsigned bytes).
+:c:macro:`PyBUF_FORMAT` must be \|'d to any of the flags except :c:macro:`PyBUF_SIMPLE`, because
+the latter already implies format ``B`` (unsigned bytes). :c:macro:`!PyBUF_FORMAT` cannot be
+used on its own.
 
 
 shape, strides, suboffsets
diff --git a/Doc/c-api/bytearray.rst b/Doc/c-api/bytearray.rst
index 456f7d89bca03c..9045689a6be567 100644
--- a/Doc/c-api/bytearray.rst
+++ b/Doc/c-api/bytearray.rst
@@ -42,17 +42,22 @@ Direct API functions
    Return a new bytearray object from any object, *o*, that implements the
    :ref:`buffer protocol <bufferobjects>`.
 
+   On failure, return ``NULL`` with an exception set.
+
 
 .. c:function:: PyObject* PyByteArray_FromStringAndSize(const char *string, Py_ssize_t len)
 
-   Create a new bytearray object from *string* and its length, *len*.  On
-   failure, ``NULL`` is returned.
+   Create a new bytearray object from *string* and its length, *len*.
+
+   On failure, return ``NULL`` with an exception set.
 
 
 .. c:function:: PyObject* PyByteArray_Concat(PyObject *a, PyObject *b)
 
    Concat bytearrays *a* and *b* and return a new bytearray with the result.
 
+   On failure, return ``NULL`` with an exception set.
+
 
 .. c:function:: Py_ssize_t PyByteArray_Size(PyObject *bytearray)
 
diff --git a/Doc/c-api/cell.rst b/Doc/c-api/cell.rst
index f8cd0344fdd1c0..61eb994c370946 100644
--- a/Doc/c-api/cell.rst
+++ b/Doc/c-api/cell.rst
@@ -39,7 +39,8 @@ Cell objects are not likely to be useful elsewhere.
 
 .. c:function:: PyObject* PyCell_Get(PyObject *cell)
 
-   Return the contents of the cell *cell*.
+   Return the contents of the cell *cell*, which can be ``NULL``.
+   If *cell* is not a cell object, returns ``NULL`` with an exception set.
 
 
 .. c:function:: PyObject* PyCell_GET(PyObject *cell)
@@ -52,8 +53,10 @@ Cell objects are not likely to be useful elsewhere.
 
    Set the contents of the cell object *cell* to *value*.  This releases the
    reference to any current content of the cell. *value* may be ``NULL``.  *cell*
-   must be non-``NULL``; if it is not a cell object, ``-1`` will be returned.  On
-   success, ``0`` will be returned.
+   must be non-``NULL``.
+
+   On success, return ``0``.
+   If *cell* is not a cell object, set an exception and return ``-1``.
 
 
 .. c:function:: void PyCell_SET(PyObject *cell, PyObject *value)
diff --git a/Doc/c-api/code.rst b/Doc/c-api/code.rst
index 968c472219c643..6eae24b38fae48 100644
--- a/Doc/c-api/code.rst
+++ b/Doc/c-api/code.rst
@@ -32,11 +32,13 @@ bound into a function.
 
 .. c:function:: Py_ssize_t PyCode_GetNumFree(PyCodeObject *co)
 
-   Return the number of free variables in a code object.
+   Return the number of :term:`free (closure) variables <closure variable>`
+   in a code object.
 
 .. c:function:: int PyUnstable_Code_GetFirstFree(PyCodeObject *co)
 
-   Return the position of the first free variable in a code object.
+   Return the position of the first :term:`free (closure) variable <closure variable>`
+   in a code object.
 
    .. versionchanged:: 3.13
 
@@ -96,8 +98,8 @@ bound into a function.
     Return the line number of the instruction that occurs on or before ``byte_offset`` and ends after it.
     If you just need the line number of a frame, use :c:func:`PyFrame_GetLineNumber` instead.
 
-    For efficiently iterating over the line numbers in a code object, use `the API described in PEP 626
-    <https://peps.python.org/pep-0626/#out-of-process-debuggers-and-profilers>`_.
+    For efficiently iterating over the line numbers in a code object, use :pep:`the API described in PEP 626
+    <0626#out-of-process-debuggers-and-profilers>`.
 
 .. c:function:: int PyCode_Addr2Location(PyObject *co, int byte_offset, int *start_line, int *start_column, int *end_line, int *end_column)
 
@@ -144,7 +146,8 @@ bound into a function.
 
    Equivalent to the Python code ``getattr(co, 'co_freevars')``.
    Returns a new reference to a :c:type:`PyTupleObject` containing the names of
-   the free variables. On error, ``NULL`` is returned and an exception is raised.
+   the :term:`free (closure) variables <closure variable>`. On error, ``NULL`` is returned
+   and an exception is raised.
 
    .. versionadded:: 3.11
 
diff --git a/Doc/c-api/complex.rst b/Doc/c-api/complex.rst
index 5a0474869071d9..67d0c5f144e075 100644
--- a/Doc/c-api/complex.rst
+++ b/Doc/c-api/complex.rst
@@ -25,12 +25,16 @@ pointers.  This is consistent throughout the API.
 
    The C structure which corresponds to the value portion of a Python complex
    number object.  Most of the functions for dealing with complex number objects
-   use structures of this type as input or output values, as appropriate.  It is
-   defined as::
+   use structures of this type as input or output values, as appropriate.
+
+   .. c:member:: double real
+                 double imag
+
+   The structure is defined as::
 
       typedef struct {
-         double real;
-         double imag;
+          double real;
+          double imag;
       } Py_complex;
 
 
@@ -106,11 +110,13 @@ Complex Numbers as Python Objects
 .. c:function:: PyObject* PyComplex_FromCComplex(Py_complex v)
 
    Create a new Python complex number object from a C :c:type:`Py_complex` value.
+   Return ``NULL`` with an exception set on error.
 
 
 .. c:function:: PyObject* PyComplex_FromDoubles(double real, double imag)
 
    Return a new :c:type:`PyComplexObject` object from *real* and *imag*.
+   Return ``NULL`` with an exception set on error.
 
 
 .. c:function:: double PyComplex_RealAsDouble(PyObject *op)
@@ -121,7 +127,9 @@ Complex Numbers as Python Objects
    :meth:`~object.__complex__` method, this method will first be called to
    convert *op* to a Python complex number object.  If :meth:`!__complex__` is
    not defined then it falls back to call :c:func:`PyFloat_AsDouble` and
-   returns its result.  Upon failure, this method returns ``-1.0``, so one
+   returns its result.
+
+   Upon failure, this method returns ``-1.0`` with an exception set, so one
    should call :c:func:`PyErr_Occurred` to check for errors.
 
    .. versionchanged:: 3.13
@@ -135,8 +143,10 @@ Complex Numbers as Python Objects
    :meth:`~object.__complex__` method, this method will first be called to
    convert *op* to a Python complex number object.  If :meth:`!__complex__` is
    not defined then it falls back to call :c:func:`PyFloat_AsDouble` and
-   returns ``0.0`` on success.  Upon failure, this method returns ``-1.0``, so
-   one should call :c:func:`PyErr_Occurred` to check for errors.
+   returns ``0.0`` on success.
+
+   Upon failure, this method returns ``-1.0`` with an exception set, so one
+   should call :c:func:`PyErr_Occurred` to check for errors.
 
    .. versionchanged:: 3.13
       Use :meth:`~object.__complex__` if available.
@@ -149,8 +159,11 @@ Complex Numbers as Python Objects
    method, this method will first be called to convert *op* to a Python complex
    number object.  If :meth:`!__complex__` is not defined then it falls back to
    :meth:`~object.__float__`.  If :meth:`!__float__` is not defined then it falls back
-   to :meth:`~object.__index__`.  Upon failure, this method returns ``-1.0`` as a real
-   value.
+   to :meth:`~object.__index__`.
+
+   Upon failure, this method returns :c:type:`Py_complex`
+   with :c:member:`~Py_complex.real` set to ``-1.0`` and with an exception set, so one
+   should call :c:func:`PyErr_Occurred` to check for errors.
 
    .. versionchanged:: 3.8
       Use :meth:`~object.__index__` if available.
diff --git a/Doc/c-api/datetime.rst b/Doc/c-api/datetime.rst
index 97522da773477e..d2d4d5309c7098 100644
--- a/Doc/c-api/datetime.rst
+++ b/Doc/c-api/datetime.rst
@@ -318,10 +318,10 @@ Macros for the convenience of modules implementing the DB API:
 .. c:function:: PyObject* PyDateTime_FromTimestamp(PyObject *args)
 
    Create and return a new :class:`datetime.datetime` object given an argument
-   tuple suitable for passing to :meth:`datetime.datetime.fromtimestamp()`.
+   tuple suitable for passing to :meth:`datetime.datetime.fromtimestamp`.
 
 
 .. c:function:: PyObject* PyDate_FromTimestamp(PyObject *args)
 
    Create and return a new :class:`datetime.date` object given an argument
-   tuple suitable for passing to :meth:`datetime.date.fromtimestamp()`.
+   tuple suitable for passing to :meth:`datetime.date.fromtimestamp`.
diff --git a/Doc/c-api/dict.rst b/Doc/c-api/dict.rst
index 03f3d28187bfe9..b4fdf47bc915bd 100644
--- a/Doc/c-api/dict.rst
+++ b/Doc/c-api/dict.rst
@@ -191,6 +191,7 @@ Dictionary Objects
    to both *default_value* and *\*result* (if it's not ``NULL``).
    These may refer to the same object: in that case you hold two separate
    references to it.
+
    .. versionadded:: 3.13
 
 
@@ -289,6 +290,17 @@ Dictionary Objects
           Py_DECREF(o);
       }
 
+   The function is not thread-safe in the :term:`free-threaded <free threading>`
+   build without external synchronization.  You can use
+   :c:macro:`Py_BEGIN_CRITICAL_SECTION` to lock the dictionary while iterating
+   over it::
+
+      Py_BEGIN_CRITICAL_SECTION(self->dict);
+      while (PyDict_Next(self->dict, &pos, &key, &value)) {
+          ...
+      }
+      Py_END_CRITICAL_SECTION();
+
 
 .. c:function:: int PyDict_Merge(PyObject *a, PyObject *b, int override)
 
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst
index 499bfb47cc4be5..fc2336d120c259 100644
--- a/Doc/c-api/exceptions.rst
+++ b/Doc/c-api/exceptions.rst
@@ -34,7 +34,7 @@ propagated, additional calls into the Python/C API may not behave as intended
 and may fail in mysterious ways.
 
 .. note::
-   The error indicator is **not** the result of :func:`sys.exc_info()`.
+   The error indicator is **not** the result of :func:`sys.exc_info`.
    The former corresponds to an exception that is not yet caught (and is
    therefore still propagating), while the latter returns an exception after
    it is caught (and has therefore stopped propagating).
@@ -733,7 +733,7 @@ Exception Classes
    This creates a class object derived from :exc:`Exception` (accessible in C as
    :c:data:`PyExc_Exception`).
 
-   The :attr:`!__module__` attribute of the new class is set to the first part (up
+   The :attr:`~type.__module__` attribute of the new class is set to the first part (up
    to the last dot) of the *name* argument, and the class name is set to the last
    part (after the last dot).  The *base* argument can be used to specify alternate
    base classes; it can either be only one class or a tuple of classes. The *dict*
@@ -1004,6 +1004,7 @@ the variables:
    single: PyExc_OverflowError (C var)
    single: PyExc_PermissionError (C var)
    single: PyExc_ProcessLookupError (C var)
+   single: PyExc_PythonFinalizationError (C var)
    single: PyExc_RecursionError (C var)
    single: PyExc_ReferenceError (C var)
    single: PyExc_RuntimeError (C var)
@@ -1096,6 +1097,8 @@ the variables:
 +-----------------------------------------+---------------------------------+----------+
 | :c:data:`PyExc_ProcessLookupError`      | :exc:`ProcessLookupError`       |          |
 +-----------------------------------------+---------------------------------+----------+
+| :c:data:`PyExc_PythonFinalizationError` | :exc:`PythonFinalizationError`  |          |
++-----------------------------------------+---------------------------------+----------+
 | :c:data:`PyExc_RecursionError`          | :exc:`RecursionError`           |          |
 +-----------------------------------------+---------------------------------+----------+
 | :c:data:`PyExc_ReferenceError`          | :exc:`ReferenceError`           |          |
diff --git a/Doc/c-api/float.rst b/Doc/c-api/float.rst
index 4f6ac0d8175c6b..1da37a5bcaeef9 100644
--- a/Doc/c-api/float.rst
+++ b/Doc/c-api/float.rst
@@ -2,20 +2,20 @@
 
 .. _floatobjects:
 
-Floating Point Objects
+Floating-Point Objects
 ======================
 
-.. index:: pair: object; floating point
+.. index:: pair: object; floating-point
 
 
 .. c:type:: PyFloatObject
 
-   This subtype of :c:type:`PyObject` represents a Python floating point object.
+   This subtype of :c:type:`PyObject` represents a Python floating-point object.
 
 
 .. c:var:: PyTypeObject PyFloat_Type
 
-   This instance of :c:type:`PyTypeObject` represents the Python floating point
+   This instance of :c:type:`PyTypeObject` represents the Python floating-point
    type.  This is the same object as :class:`float` in the Python layer.
 
 
@@ -45,7 +45,7 @@ Floating Point Objects
 .. c:function:: double PyFloat_AsDouble(PyObject *pyfloat)
 
    Return a C :c:expr:`double` representation of the contents of *pyfloat*.  If
-   *pyfloat* is not a Python floating point object but has a :meth:`~object.__float__`
+   *pyfloat* is not a Python floating-point object but has a :meth:`~object.__float__`
    method, this method will first be called to convert *pyfloat* into a float.
    If :meth:`!__float__` is not defined then it falls back to :meth:`~object.__index__`.
    This method returns ``-1.0`` upon failure, so one should call
diff --git a/Doc/c-api/frame.rst b/Doc/c-api/frame.rst
index 82e0980ad753d0..1a52e146a69751 100644
--- a/Doc/c-api/frame.rst
+++ b/Doc/c-api/frame.rst
@@ -121,17 +121,18 @@ See also :ref:`Reflection <reflection>`.
 .. c:function:: PyObject* PyFrame_GetLocals(PyFrameObject *frame)
 
    Get the *frame*'s :attr:`~frame.f_locals` attribute.
-   If the frame refers to a function or comprehension, this returns
-   a write-through proxy object that allows modifying the locals.
-   In all other cases (classes, modules) it returns the :class:`dict`
-   representing the frame locals directly.
+   If the frame refers to an :term:`optimized scope`, this returns a
+   write-through proxy object that allows modifying the locals.
+   In all other cases (classes, modules, :func:`exec`, :func:`eval`) it returns
+   the mapping representing the frame locals directly (as described for
+   :func:`locals`).
 
    Return a :term:`strong reference`.
 
    .. versionadded:: 3.11
 
    .. versionchanged:: 3.13
-      Return a proxy object for functions and comprehensions.
+      As part of :pep:`667`, return an instance of :c:var:`PyFrameLocalsProxy_Type`.
 
 
 .. c:function:: int PyFrame_GetLineNumber(PyFrameObject *frame)
@@ -139,6 +140,26 @@ See also :ref:`Reflection <reflection>`.
    Return the line number that *frame* is currently executing.
 
 
+Frame Locals Proxies
+^^^^^^^^^^^^^^^^^^^^
+
+.. versionadded:: 3.13
+
+The :attr:`~frame.f_locals` attribute on a :ref:`frame object <frame-objects>`
+is an instance of a "frame-locals proxy". The proxy object exposes a
+write-through view of the underlying locals dictionary for the frame. This
+ensures that the variables exposed by ``f_locals`` are always up to date with
+the live local variables in the frame itself.
+
+See :pep:`667` for more information.
+
+.. c:var:: PyTypeObject PyFrameLocalsProxy_Type
+
+   The type of frame :func:`locals` proxy objects.
+
+.. c:function:: int PyFrameLocalsProxy_Check(PyObject *obj)
+
+   Return non-zero if *obj* is a frame :func:`locals` proxy.
 
 Internal Frames
 ^^^^^^^^^^^^^^^
diff --git a/Doc/c-api/hash.rst b/Doc/c-api/hash.rst
index ddf0b3e15dbdbe..7345a048a4128b 100644
--- a/Doc/c-api/hash.rst
+++ b/Doc/c-api/hash.rst
@@ -29,6 +29,12 @@ See also the :c:member:`PyTypeObject.tp_hash` member and :ref:`numeric-hash`.
 
    .. versionadded:: 3.13
 
+.. c:macro:: PyHASH_MULTIPLIER
+
+   Prime multiplier used in string and various other hashes.
+
+   .. versionadded:: 3.13
+
 .. c:macro:: PyHASH_INF
 
    The hash value returned for a positive infinity.
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index 1054b38cb92f7d..6e48644c8fef8b 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -136,14 +136,14 @@ Importing Modules
    such modules have no way to know that the module object is an unknown (and
    probably damaged with respect to the module author's intents) state.
 
-   The module's :attr:`__spec__` and :attr:`__loader__` will be set, if
-   not set already, with the appropriate values.  The spec's loader will
-   be set to the module's ``__loader__`` (if set) and to an instance of
-   :class:`~importlib.machinery.SourceFileLoader` otherwise.
+   The module's :attr:`~module.__spec__` and :attr:`~module.__loader__` will be
+   set, if not set already, with the appropriate values.  The spec's loader
+   will be set to the module's :attr:`!__loader__` (if set) and to an instance
+   of :class:`~importlib.machinery.SourceFileLoader` otherwise.
 
-   The module's :attr:`__file__` attribute will be set to the code object's
-   :attr:`~codeobject.co_filename`.  If applicable, :attr:`__cached__` will also
-   be set.
+   The module's :attr:`~module.__file__` attribute will be set to the code
+   object's :attr:`~codeobject.co_filename`.  If applicable,
+   :attr:`~module.__cached__` will also be set.
 
    This function will reload the module if it was already imported.  See
    :c:func:`PyImport_ReloadModule` for the intended way to reload a module.
@@ -155,29 +155,29 @@ Importing Modules
    :c:func:`PyImport_ExecCodeModuleWithPathnames`.
 
    .. versionchanged:: 3.12
-      The setting of :attr:`__cached__` and :attr:`__loader__` is
-      deprecated. See :class:`~importlib.machinery.ModuleSpec` for
+      The setting of :attr:`~module.__cached__` and :attr:`~module.__loader__`
+      is deprecated. See :class:`~importlib.machinery.ModuleSpec` for
       alternatives.
 
 
 .. c:function:: PyObject* PyImport_ExecCodeModuleEx(const char *name, PyObject *co, const char *pathname)
 
-   Like :c:func:`PyImport_ExecCodeModule`, but the :attr:`__file__` attribute of
-   the module object is set to *pathname* if it is non-``NULL``.
+   Like :c:func:`PyImport_ExecCodeModule`, but the :attr:`~module.__file__`
+   attribute of the module object is set to *pathname* if it is non-``NULL``.
 
    See also :c:func:`PyImport_ExecCodeModuleWithPathnames`.
 
 
 .. c:function:: PyObject* PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname, PyObject *cpathname)
 
-   Like :c:func:`PyImport_ExecCodeModuleEx`, but the :attr:`__cached__`
+   Like :c:func:`PyImport_ExecCodeModuleEx`, but the :attr:`~module.__cached__`
    attribute of the module object is set to *cpathname* if it is
    non-``NULL``.  Of the three functions, this is the preferred one to use.
 
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.12
-      Setting :attr:`__cached__` is deprecated. See
+      Setting :attr:`~module.__cached__` is deprecated. See
       :class:`~importlib.machinery.ModuleSpec` for alternatives.
 
 
@@ -190,7 +190,7 @@ Importing Modules
 
    .. versionadded:: 3.2
    .. versionchanged:: 3.3
-      Uses :func:`!imp.source_from_cache()` in calculating the source path if
+      Uses :func:`!imp.source_from_cache` in calculating the source path if
       only the bytecode path is provided.
    .. versionchanged:: 3.12
       No longer uses the removed :mod:`!imp` module.
diff --git a/Doc/c-api/init.rst b/Doc/c-api/init.rst
index 9e118d4f36145f..130942e070ef7a 100644
--- a/Doc/c-api/init.rst
+++ b/Doc/c-api/init.rst
@@ -7,7 +7,8 @@
 Initialization, Finalization, and Threads
 *****************************************
 
-See also :ref:`Python Initialization Configuration <init-config>`.
+See :ref:`Python Initialization Configuration <init-config>` for details
+on how to configure the interpreter prior to initialization.
 
 .. _pre-init-safe:
 
@@ -21,6 +22,15 @@ a few functions and the :ref:`global configuration variables
 
 The following functions can be safely called before Python is initialized:
 
+* Functions that initialize the interpreter:
+
+  * :c:func:`Py_Initialize`
+  * :c:func:`Py_InitializeEx`
+  * :c:func:`Py_InitializeFromConfig`
+  * :c:func:`Py_BytesMain`
+  * :c:func:`Py_Main`
+  * the runtime pre-initialization functions covered in :ref:`init-config`
+
 * Configuration functions:
 
   * :c:func:`PyImport_AppendInittab`
@@ -32,6 +42,7 @@ The following functions can be safely called before Python is initialized:
   * :c:func:`Py_SetProgramName`
   * :c:func:`Py_SetPythonHome`
   * :c:func:`PySys_ResetWarnOptions`
+  * the configuration functions covered in :ref:`init-config`
 
 * Informative functions:
 
@@ -43,10 +54,12 @@ The following functions can be safely called before Python is initialized:
   * :c:func:`Py_GetCopyright`
   * :c:func:`Py_GetPlatform`
   * :c:func:`Py_GetVersion`
+  * :c:func:`Py_IsInitialized`
 
 * Utilities:
 
   * :c:func:`Py_DecodeLocale`
+  * the status reporting and utility functions covered in :ref:`init-config`
 
 * Memory allocators:
 
@@ -55,13 +68,20 @@ The following functions can be safely called before Python is initialized:
   * :c:func:`PyMem_RawCalloc`
   * :c:func:`PyMem_RawFree`
 
+* Synchronization:
+
+  * :c:func:`PyMutex_Lock`
+  * :c:func:`PyMutex_Unlock`
+
 .. note::
 
-   The following functions **should not be called** before
-   :c:func:`Py_Initialize`: :c:func:`Py_EncodeLocale`, :c:func:`Py_GetPath`,
+   Despite their apparent similarity to some of the functions listed above,
+   the following functions **should not be called** before the interpreter has
+   been initialized: :c:func:`Py_EncodeLocale`, :c:func:`Py_GetPath`,
    :c:func:`Py_GetPrefix`, :c:func:`Py_GetExecPrefix`,
    :c:func:`Py_GetProgramFullPath`, :c:func:`Py_GetPythonHome`,
-   :c:func:`Py_GetProgramName` and :c:func:`PyEval_InitThreads`.
+   :c:func:`Py_GetProgramName`, :c:func:`PyEval_InitThreads`, and
+   :c:func:`Py_RunMain`.
 
 
 .. _global-conf-vars:
@@ -341,34 +361,42 @@ Initializing and finalizing the interpreter
    this should be called before using any other Python/C API functions; see
    :ref:`Before Python Initialization <pre-init-safe>` for the few exceptions.
 
-   This initializes
-   the table of loaded modules (``sys.modules``), and creates the fundamental
-   modules :mod:`builtins`, :mod:`__main__` and :mod:`sys`.  It also initializes
-   the module search path (``sys.path``). It does not set ``sys.argv``; use
-   the new :c:type:`PyConfig` API of the :ref:`Python Initialization
-   Configuration <init-config>` for that.  This is a no-op when called for a
-   second time
-   (without calling :c:func:`Py_FinalizeEx` first).  There is no return value; it is a
-   fatal error if the initialization fails.
-
-   Use the :c:func:`Py_InitializeFromConfig` function to customize the
+   This initializes the table of loaded modules (``sys.modules``), and creates
+   the fundamental modules :mod:`builtins`, :mod:`__main__` and :mod:`sys`.
+   It also initializes the module search path (``sys.path``). It does not set
+   ``sys.argv``; use the :ref:`Python Initialization Configuration <init-config>`
+   API for that. This is a no-op when called for a second time (without calling
+   :c:func:`Py_FinalizeEx` first).  There is no return value; it is a fatal
+   error if the initialization fails.
+
+   Use :c:func:`Py_InitializeFromConfig` to customize the
    :ref:`Python Initialization Configuration <init-config>`.
 
    .. note::
-      On Windows, changes the console mode from ``O_TEXT`` to ``O_BINARY``, which will
-      also affect non-Python uses of the console using the C Runtime.
+      On Windows, changes the console mode from ``O_TEXT`` to ``O_BINARY``,
+      which will also affect non-Python uses of the console using the C Runtime.
 
 
 .. c:function:: void Py_InitializeEx(int initsigs)
 
    This function works like :c:func:`Py_Initialize` if *initsigs* is ``1``. If
-   *initsigs* is ``0``, it skips initialization registration of signal handlers, which
-   might be useful when Python is embedded.
+   *initsigs* is ``0``, it skips initialization registration of signal handlers,
+   which may be useful when CPython is embedded as part of a larger application.
 
-   Use the :c:func:`Py_InitializeFromConfig` function to customize the
+   Use :c:func:`Py_InitializeFromConfig` to customize the
    :ref:`Python Initialization Configuration <init-config>`.
 
 
+.. c:function:: PyStatus Py_InitializeFromConfig(const PyConfig *config)
+
+   Initialize Python from *config* configuration, as described in
+   :ref:`init-from-config`.
+
+   See the :ref:`init-config` section for details on pre-initializing the
+   interpreter, populating the runtime configuration structure, and querying
+   the returned status structure.
+
+
 .. c:function:: int Py_IsInitialized()
 
    Return true (nonzero) when the Python interpreter has been initialized, false
@@ -391,9 +419,16 @@ Initializing and finalizing the interpreter
    :c:func:`Py_NewInterpreter` below) that were created and not yet destroyed since
    the last call to :c:func:`Py_Initialize`.  Ideally, this frees all memory
    allocated by the Python interpreter.  This is a no-op when called for a second
-   time (without calling :c:func:`Py_Initialize` again first).  Normally the
-   return value is ``0``.  If there were errors during finalization
-   (flushing buffered data), ``-1`` is returned.
+   time (without calling :c:func:`Py_Initialize` again first).
+
+   Since this is the reverse of :c:func:`Py_Initialize`, it should be called
+   in the same thread with the same interpreter active.  That means
+   the main thread and the main interpreter.
+   This should never be called while :c:func:`Py_RunMain` is running.
+
+   Normally the return value is ``0``.
+   If there were errors during finalization (flushing buffered data),
+   ``-1`` is returned.
 
    This function is provided for a number of reasons.  An embedding application
    might want to restart Python without having to restart the application itself.
@@ -418,12 +453,120 @@ Initializing and finalizing the interpreter
 
    .. versionadded:: 3.6
 
+
 .. c:function:: void Py_Finalize()
 
    This is a backwards-compatible version of :c:func:`Py_FinalizeEx` that
    disregards the return value.
 
 
+.. c:function:: int Py_BytesMain(int argc, char **argv)
+
+   Similar to :c:func:`Py_Main` but *argv* is an array of bytes strings,
+   allowing the calling application to delegate the text decoding step to
+   the CPython runtime.
+
+   .. versionadded:: 3.8
+
+
+.. c:function:: int Py_Main(int argc, wchar_t **argv)
+
+   The main program for the standard interpreter, encapsulating a full
+   initialization/finalization cycle, as well as additional
+   behaviour to implement reading configurations settings from the environment
+   and command line, and then executing ``__main__`` in accordance with
+   :ref:`using-on-cmdline`.
+
+   This is made available for programs which wish to support the full CPython
+   command line interface, rather than just embedding a Python runtime in a
+   larger application.
+
+   The *argc* and *argv* parameters are similar to those which are passed to a
+   C program's :c:func:`main` function, except that the *argv* entries are first
+   converted to ``wchar_t`` using :c:func:`Py_DecodeLocale`. It is also
+   important to note that the argument list entries may be modified to point to
+   strings other than those passed in (however, the contents of the strings
+   pointed to by the argument list are not modified).
+
+   The return value will be ``0`` if the interpreter exits normally (i.e.,
+   without an exception), ``1`` if the interpreter exits due to an exception,
+   or ``2`` if the argument list does not represent a valid Python command
+   line.
+
+   Note that if an otherwise unhandled :exc:`SystemExit` is raised, this
+   function will not return ``1``, but exit the process, as long as
+   ``Py_InspectFlag`` is not set. If ``Py_InspectFlag`` is set, execution will
+   drop into the interactive Python prompt, at which point a second otherwise
+   unhandled :exc:`SystemExit` will still exit the process, while any other
+   means of exiting will set the return value as described above.
+
+   In terms of the CPython runtime configuration APIs documented in the
+   :ref:`runtime configuration <init-config>` section (and without accounting
+   for error handling), ``Py_Main`` is approximately equivalent to::
+
+      PyConfig config;
+      PyConfig_InitPythonConfig(&config);
+      PyConfig_SetArgv(&config, argc, argv);
+      Py_InitializeFromConfig(&config);
+      PyConfig_Clear(&config);
+
+      Py_RunMain();
+
+   In normal usage, an embedding application will call this function
+   *instead* of calling :c:func:`Py_Initialize`, :c:func:`Py_InitializeEx` or
+   :c:func:`Py_InitializeFromConfig` directly, and all settings will be applied
+   as described elsewhere in this documentation. If this function is instead
+   called *after* a preceding runtime initialization API call, then exactly
+   which environmental and command line configuration settings will be updated
+   is version dependent (as it depends on which settings correctly support
+   being modified after they have already been set once when the runtime was
+   first initialized).
+
+
+.. c:function:: int Py_RunMain(void)
+
+   Executes the main module in a fully configured CPython runtime.
+
+   Executes the command (:c:member:`PyConfig.run_command`), the script
+   (:c:member:`PyConfig.run_filename`) or the module
+   (:c:member:`PyConfig.run_module`) specified on the command line or in the
+   configuration. If none of these values are set, runs the interactive Python
+   prompt (REPL) using the ``__main__`` module's global namespace.
+
+   If :c:member:`PyConfig.inspect` is not set (the default), the return value
+   will be ``0`` if the interpreter exits normally (that is, without raising
+   an exception), or ``1`` if the interpreter exits due to an exception. If an
+   otherwise unhandled :exc:`SystemExit` is raised, the function will immediately
+   exit the process instead of returning ``1``.
+
+   If :c:member:`PyConfig.inspect` is set (such as when the :option:`-i` option
+   is used), rather than returning when the interpreter exits, execution will
+   instead resume in an interactive Python prompt (REPL) using the ``__main__``
+   module's global namespace. If the interpreter exited with an exception, it
+   is immediately raised in the REPL session. The function return value is
+   then determined by the way the *REPL session* terminates: returning ``0``
+   if the session terminates without raising an unhandled exception, exiting
+   immediately for an unhandled :exc:`SystemExit`, and returning ``1`` for
+   any other unhandled exception.
+
+   This function always finalizes the Python interpreter regardless of whether
+   it returns a value or immediately exits the process due to an unhandled
+   :exc:`SystemExit` exception.
+
+   See :ref:`Python Configuration <init-python-config>` for an example of a
+   customized Python that always runs in isolated mode using
+   :c:func:`Py_RunMain`.
+
+.. c:function:: int PyUnstable_AtExit(PyInterpreterState *interp, void (*func)(void *), void *data)
+
+   Register an :mod:`atexit` callback for the target interpreter *interp*.
+   This is similar to :c:func:`Py_AtExit`, but takes an explicit interpreter and
+   data pointer for the callback.
+
+   The :term:`GIL` must be held for *interp*.
+
+   .. versionadded:: 3.13
+
 Process-wide parameters
 =======================
 
@@ -481,7 +624,7 @@ Process-wide parameters
    returned string points into static storage; the caller should not modify its
    value.  This corresponds to the :makevar:`prefix` variable in the top-level
    :file:`Makefile` and the :option:`--prefix` argument to the :program:`configure`
-   script at build time.  The value is available to Python code as ``sys.prefix``.
+   script at build time.  The value is available to Python code as ``sys.base_prefix``.
    It is only useful on Unix.  See also the next function.
 
    This function should not be called before :c:func:`Py_Initialize`, otherwise
@@ -491,7 +634,8 @@ Process-wide parameters
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
    .. deprecated-removed:: 3.13 3.15
-      Get :data:`sys.prefix` instead.
+      Get :data:`sys.base_prefix` instead, or :data:`sys.prefix` if
+      :ref:`virtual environments <venv-def>` need to be handled.
 
 
 .. c:function:: wchar_t* Py_GetExecPrefix()
@@ -504,7 +648,8 @@ Process-wide parameters
    should not modify its value.  This corresponds to the :makevar:`exec_prefix`
    variable in the top-level :file:`Makefile` and the ``--exec-prefix``
    argument to the :program:`configure` script at build  time.  The value is
-   available to Python code as ``sys.exec_prefix``.  It is only useful on Unix.
+   available to Python code as ``sys.base_exec_prefix``.  It is only useful on
+   Unix.
 
    Background: The exec-prefix differs from the prefix when platform dependent
    files (such as executables and shared libraries) are installed in a different
@@ -535,7 +680,8 @@ Process-wide parameters
       It now returns ``NULL`` if called before :c:func:`Py_Initialize`.
 
    .. deprecated-removed:: 3.13 3.15
-      Get :data:`sys.exec_prefix` instead.
+      Get :data:`sys.base_exec_prefix` instead, or :data:`sys.exec_prefix` if
+      :ref:`virtual environments <venv-def>` need to be handled.
 
 
 .. c:function:: wchar_t* Py_GetProgramFullPath()
@@ -1195,6 +1341,9 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
       This function now calls the :c:member:`PyThreadState.on_delete` callback.
       Previously, that happened in :c:func:`PyThreadState_Delete`.
 
+   .. versionchanged:: 3.13
+      The :c:member:`PyThreadState.on_delete` callback was removed.
+
 
 .. c:function:: void PyThreadState_Delete(PyThreadState *tstate)
 
@@ -1206,7 +1355,7 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
 .. c:function:: void PyThreadState_DeleteCurrent(void)
 
    Destroy the current thread state and release the global interpreter lock.
-   Like :c:func:`PyThreadState_Delete`, the global interpreter lock need not
+   Like :c:func:`PyThreadState_Delete`, the global interpreter lock must
    be held. The thread state must have been reset with a previous call
    to :c:func:`PyThreadState_Clear`.
 
@@ -1296,6 +1445,17 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
 
    .. versionadded:: 3.8
 
+
+.. c:function:: PyObject* PyUnstable_InterpreterState_GetMainModule(PyInterpreterState *interp)
+
+   Return a :term:`strong reference` to the ``__main__`` `module object <moduleobjects>`_
+   for the given interpreter.
+
+   The caller must hold the GIL.
+
+   .. versionadded:: 3.13
+
+
 .. c:type:: PyObject* (*_PyFrameEvalFunction)(PyThreadState *tstate, _PyInterpreterFrame *frame, int throwflag)
 
    Type of a frame evaluation function.
@@ -1548,7 +1708,11 @@ function. You can create and destroy them using the following functions:
           .check_multi_interp_extensions = 1,
           .gil = PyInterpreterConfig_OWN_GIL,
       };
-      PyThreadState *tstate = Py_NewInterpreterFromConfig(&config);
+      PyThreadState *tstate = NULL;
+      PyStatus status = Py_NewInterpreterFromConfig(&tstate, &config);
+      if (PyStatus_Exception(status)) {
+          Py_ExitStatusException(status);
+      }
 
    Note that the config is used only briefly and does not get modified.
    During initialization the config's values are converted into various
@@ -2152,3 +2316,145 @@ be used in new code.
 .. c:function:: void PyThread_delete_key_value(int key)
 .. c:function:: void PyThread_ReInitTLS()
 
+Synchronization Primitives
+==========================
+
+The C-API provides a basic mutual exclusion lock.
+
+.. c:type:: PyMutex
+
+   A mutual exclusion lock.  The :c:type:`!PyMutex` should be initialized to
+   zero to represent the unlocked state.  For example::
+
+      PyMutex mutex = {0};
+
+   Instances of :c:type:`!PyMutex` should not be copied or moved.  Both the
+   contents and address of a :c:type:`!PyMutex` are meaningful, and it must
+   remain at a fixed, writable location in memory.
+
+   .. note::
+
+      A :c:type:`!PyMutex` currently occupies one byte, but the size should be
+      considered unstable.  The size may change in future Python releases
+      without a deprecation period.
+
+   .. versionadded:: 3.13
+
+.. c:function:: void PyMutex_Lock(PyMutex *m)
+
+   Lock mutex *m*.  If another thread has already locked it, the calling
+   thread will block until the mutex is unlocked.  While blocked, the thread
+   will temporarily release the :term:`GIL` if it is held.
+
+   .. versionadded:: 3.13
+
+.. c:function:: void PyMutex_Unlock(PyMutex *m)
+
+   Unlock mutex *m*. The mutex must be locked --- otherwise, the function will
+   issue a fatal error.
+
+   .. versionadded:: 3.13
+
+.. _python-critical-section-api:
+
+Python Critical Section API
+---------------------------
+
+The critical section API provides a deadlock avoidance layer on top of
+per-object locks for :term:`free-threaded <free threading>` CPython.  They are
+intended to replace reliance on the :term:`global interpreter lock`, and are
+no-ops in versions of Python with the global interpreter lock.
+
+Critical sections avoid deadlocks by implicitly suspending active critical
+sections and releasing the locks during calls to :c:func:`PyEval_SaveThread`.
+When :c:func:`PyEval_RestoreThread` is called, the most recent critical section
+is resumed, and its locks reacquired.  This means the critical section API
+provides weaker guarantees than traditional locks -- they are useful because
+their behavior is similar to the :term:`GIL`.
+
+The functions and structs used by the macros are exposed for cases
+where C macros are not available. They should only be used as in the
+given macro expansions. Note that the sizes and contents of the structures may
+change in future Python versions.
+
+.. note::
+
+   Operations that need to lock two objects at once must use
+   :c:macro:`Py_BEGIN_CRITICAL_SECTION2`.  You *cannot* use nested critical
+   sections to lock more than one object at once, because the inner critical
+   section may suspend the outer critical sections.  This API does not provide
+   a way to lock more than two objects at once.
+
+Example usage::
+
+   static PyObject *
+   set_field(MyObject *self, PyObject *value)
+   {
+      Py_BEGIN_CRITICAL_SECTION(self);
+      Py_SETREF(self->field, Py_XNewRef(value));
+      Py_END_CRITICAL_SECTION();
+      Py_RETURN_NONE;
+   }
+
+In the above example, :c:macro:`Py_SETREF` calls :c:macro:`Py_DECREF`, which
+can call arbitrary code through an object's deallocation function.  The critical
+section API avoids potential deadlocks due to reentrancy and lock ordering
+by allowing the runtime to temporarily suspend the critical section if the
+code triggered by the finalizer blocks and calls :c:func:`PyEval_SaveThread`.
+
+.. c:macro:: Py_BEGIN_CRITICAL_SECTION(op)
+
+   Acquires the per-object lock for the object *op* and begins a
+   critical section.
+
+   In the free-threaded build, this macro expands to::
+
+      {
+          PyCriticalSection _py_cs;
+          PyCriticalSection_Begin(&_py_cs, (PyObject*)(op))
+
+   In the default build, this macro expands to ``{``.
+
+   .. versionadded:: 3.13
+
+.. c:macro:: Py_END_CRITICAL_SECTION()
+
+   Ends the critical section and releases the per-object lock.
+
+   In the free-threaded build, this macro expands to::
+
+          PyCriticalSection_End(&_py_cs);
+      }
+
+   In the default build, this macro expands to ``}``.
+
+   .. versionadded:: 3.13
+
+.. c:macro:: Py_BEGIN_CRITICAL_SECTION2(a, b)
+
+   Acquires the per-objects locks for the objects *a* and *b* and begins a
+   critical section.  The locks are acquired in a consistent order (lowest
+   address first) to avoid lock ordering deadlocks.
+
+   In the free-threaded build, this macro expands to::
+
+      {
+          PyCriticalSection2 _py_cs2;
+          PyCriticalSection2_Begin(&_py_cs2, (PyObject*)(a), (PyObject*)(b))
+
+   In the default build, this macro expands to ``{``.
+
+   .. versionadded:: 3.13
+
+.. c:macro:: Py_END_CRITICAL_SECTION2()
+
+   Ends the critical section and releases the per-object locks.
+
+   In the free-threaded build, this macro expands to::
+
+          PyCriticalSection2_End(&_py_cs2);
+      }
+
+   In the default build, this macro expands to ``}``.
+
+   .. versionadded:: 3.13
diff --git a/Doc/c-api/init_config.rst b/Doc/c-api/init_config.rst
index 5195f6cccfe9df..cd78fe18e35d1c 100644
--- a/Doc/c-api/init_config.rst
+++ b/Doc/c-api/init_config.rst
@@ -321,7 +321,7 @@ PyPreConfig
       * Set :c:member:`PyConfig.filesystem_encoding` to ``"mbcs"``,
       * Set :c:member:`PyConfig.filesystem_errors` to ``"replace"``.
 
-      Initialized the from :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment
+      Initialized from the :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment
       variable value.
 
       Only available on Windows. ``#ifdef MS_WINDOWS`` macro can be used for
@@ -509,7 +509,7 @@ PyConfig
       The :c:func:`PyConfig_Read` function only parses
       :c:member:`PyConfig.argv` arguments once: :c:member:`PyConfig.parse_argv`
       is set to ``2`` after arguments are parsed. Since Python arguments are
-      strippped from :c:member:`PyConfig.argv`, parsing arguments twice would
+      stripped from :c:member:`PyConfig.argv`, parsing arguments twice would
       parse the application options as Python options.
 
       :ref:`Preinitialize Python <c-preinit>` if needed.
@@ -1041,7 +1041,7 @@ PyConfig
       The :c:func:`PyConfig_Read` function only parses
       :c:member:`PyConfig.argv` arguments once: :c:member:`PyConfig.parse_argv`
       is set to ``2`` after arguments are parsed. Since Python arguments are
-      strippped from :c:member:`PyConfig.argv`, parsing arguments twice would
+      stripped from :c:member:`PyConfig.argv`, parsing arguments twice would
       parse the application options as Python options.
 
       Default: ``1`` in Python mode, ``0`` in isolated mode.
@@ -1271,6 +1271,17 @@ PyConfig
 
       Default: ``1`` in Python config and ``0`` in isolated config.
 
+   .. c:member:: int use_system_logger
+
+      If non-zero, ``stdout`` and ``stderr`` will be redirected to the system
+      log.
+
+      Only available on macOS 10.12 and later, and on iOS.
+
+      Default: ``0`` (don't use system log).
+
+      .. versionadded:: 3.13.2
+
    .. c:member:: int user_site_directory
 
       If non-zero, add the user site directory to :data:`sys.path`.
@@ -1348,14 +1359,13 @@ the :option:`-X` command line option.
    The ``show_alloc_count`` field has been removed.
 
 
+.. _init-from-config:
+
 Initialization with PyConfig
 ============================
 
-Function to initialize Python:
-
-.. c:function:: PyStatus Py_InitializeFromConfig(const PyConfig *config)
-
-   Initialize Python from *config* configuration.
+Initializing the interpreter from a populated configuration struct is handled
+by calling :c:func:`Py_InitializeFromConfig`.
 
 The caller is responsible to handle exceptions (error or exit) using
 :c:func:`PyStatus_Exception` and :c:func:`Py_ExitStatusException`.
@@ -1585,26 +1595,6 @@ The ``__PYVENV_LAUNCHER__`` environment variable is used to set
 :c:member:`PyConfig.base_executable`.
 
 
-Py_RunMain()
-============
-
-.. c:function:: int Py_RunMain(void)
-
-   Execute the command (:c:member:`PyConfig.run_command`), the script
-   (:c:member:`PyConfig.run_filename`) or the module
-   (:c:member:`PyConfig.run_module`) specified on the command line or in the
-   configuration.
-
-   By default and when if :option:`-i` option is used, run the REPL.
-
-   Finally, finalizes Python and returns an exit status that can be passed to
-   the ``exit()`` function.
-
-See :ref:`Python Configuration <init-python-config>` for an example of
-customized Python always running in isolated mode using
-:c:func:`Py_RunMain`.
-
-
 Py_GetArgcArgv()
 ================
 
diff --git a/Doc/c-api/list.rst b/Doc/c-api/list.rst
index 53eb54d3e1021a..758415a76e5cb4 100644
--- a/Doc/c-api/list.rst
+++ b/Doc/c-api/list.rst
@@ -38,9 +38,12 @@ List Objects
    .. note::
 
       If *len* is greater than zero, the returned list object's items are
-      set to ``NULL``.  Thus you cannot use abstract API functions such as
-      :c:func:`PySequence_SetItem`  or expose the object to Python code before
-      setting all items to a real object with :c:func:`PyList_SetItem`.
+      set to ``NULL``. Thus you cannot use abstract API functions such as
+      :c:func:`PySequence_SetItem` or expose the object to Python code before
+      setting all items to a real object with :c:func:`PyList_SetItem` or
+      :c:func:`PyList_SET_ITEM()`. The following APIs are safe APIs before
+      the list is fully initialized: :c:func:`PyList_SetItem()` and :c:func:`PyList_SET_ITEM()`.
+
 
 
 .. c:function:: Py_ssize_t PyList_Size(PyObject *list)
diff --git a/Doc/c-api/long.rst b/Doc/c-api/long.rst
index 522c028cfb8d40..1f899b1df196f2 100644
--- a/Doc/c-api/long.rst
+++ b/Doc/c-api/long.rst
@@ -139,7 +139,6 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    .. versionadded:: 3.13
 
 
-.. XXX alias PyLong_AS_LONG (for now)
 .. c:function:: long PyLong_AsLong(PyObject *obj)
 
    .. index::
@@ -161,6 +160,16 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    .. versionchanged:: 3.10
       This function will no longer use :meth:`~object.__int__`.
 
+   .. c:namespace:: NULL
+
+   .. c:function:: long PyLong_AS_LONG(PyObject *obj)
+
+      A :term:`soft deprecated` alias.
+      Exactly equivalent to the preferred ``PyLong_AsLong``. In particular,
+      it can fail with :exc:`OverflowError` or another exception.
+
+      .. deprecated:: 3.14
+         The function is soft deprecated.
 
 .. c:function:: int PyLong_AsInt(PyObject *obj)
 
@@ -405,14 +414,13 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    Passing zero to *n_bytes* will return the size of a buffer that would
    be large enough to hold the value. This may be larger than technically
-   necessary, but not unreasonably so.
+   necessary, but not unreasonably so. If *n_bytes=0*, *buffer* may be
+   ``NULL``.
 
    .. note::
 
       Passing *n_bytes=0* to this function is not an accurate way to determine
-      the bit length of a value.
-
-   If *n_bytes=0*, *buffer* may be ``NULL``.
+      the bit length of the value.
 
    To get at the entire Python value of an unknown size, the function can be
    called twice: first to determine the buffer size, then to fill it::
@@ -446,13 +454,15 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
       free(bignum);
 
    *flags* is either ``-1`` (``Py_ASNATIVEBYTES_DEFAULTS``) to select defaults
-   that behave most like a C cast, or a combintation of the other flags in
+   that behave most like a C cast, or a combination of the other flags in
    the table below.
    Note that ``-1`` cannot be combined with other flags.
 
    Currently, ``-1`` corresponds to
    ``Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_UNSIGNED_BUFFER``.
 
+   .. c:namespace:: NULL
+
    ============================================= ======
    Flag                                          Value
    ============================================= ======
@@ -462,6 +472,7 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    .. c:macro:: Py_ASNATIVEBYTES_NATIVE_ENDIAN   ``3``
    .. c:macro:: Py_ASNATIVEBYTES_UNSIGNED_BUFFER ``4``
    .. c:macro:: Py_ASNATIVEBYTES_REJECT_NEGATIVE ``8``
+   .. c:macro:: Py_ASNATIVEBYTES_ALLOW_INDEX     ``16``
    ============================================= ======
 
    Specifying ``Py_ASNATIVEBYTES_NATIVE_ENDIAN`` will override any other endian
@@ -483,6 +494,13 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    provided there is enough space for at least one sign bit, regardless of
    whether ``Py_ASNATIVEBYTES_UNSIGNED_BUFFER`` was specified.
 
+   If ``Py_ASNATIVEBYTES_ALLOW_INDEX`` is specified and a non-integer value is
+   passed, its :meth:`~object.__index__` method will be called first. This may
+   result in Python code executing and other threads being allowed to run, which
+   could cause changes to other objects or values in use. When *flags* is
+   ``-1``, this option is not set, and non-integer values will raise
+   :exc:`TypeError`.
+
    .. note::
 
       With the default *flags* (``-1``, or *UNSIGNED_BUFFER*  without
@@ -494,6 +512,17 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    .. versionadded:: 3.13
 
 
+.. c:function:: PyObject* PyLong_GetInfo(void)
+
+   On success, return a read only :term:`named tuple`, that holds
+   information about Python's internal representation of integers.
+   See :data:`sys.int_info` for description of individual fields.
+
+   On failure, return ``NULL`` with an exception set.
+
+   .. versionadded:: 3.1
+
+
 .. c:function:: int PyUnstable_Long_IsCompact(const PyLongObject* op)
 
    Return 1 if *op* is compact, 0 otherwise.
@@ -509,6 +538,9 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
    Exactly what values are considered compact is an implementation detail
    and is subject to change.
 
+   .. versionadded:: 3.12
+
+
 .. c:function:: Py_ssize_t PyUnstable_Long_CompactValue(const PyLongObject* op)
 
    If *op* is compact, as determined by :c:func:`PyUnstable_Long_IsCompact`,
@@ -516,3 +548,5 @@ distinguished from a number.  Use :c:func:`PyErr_Occurred` to disambiguate.
 
    Otherwise, the return value is undefined.
 
+   .. versionadded:: 3.12
+
diff --git a/Doc/c-api/marshal.rst b/Doc/c-api/marshal.rst
index 489f1580a414b2..b9085ad3ec361d 100644
--- a/Doc/c-api/marshal.rst
+++ b/Doc/c-api/marshal.rst
@@ -15,7 +15,7 @@ Numeric values are stored with the least significant byte first.
 
 The module supports two versions of the data format: version 0 is the
 historical version, version 1 shares interned strings in the file, and upon
-unmarshalling.  Version 2 uses a binary format for floating point numbers.
+unmarshalling.  Version 2 uses a binary format for floating-point numbers.
 ``Py_MARSHAL_VERSION`` indicates the current file format (currently 2).
 
 
diff --git a/Doc/c-api/memory.rst b/Doc/c-api/memory.rst
index 9da09a21607f61..f7618a025ba3d8 100644
--- a/Doc/c-api/memory.rst
+++ b/Doc/c-api/memory.rst
@@ -102,30 +102,38 @@ All allocating functions belong to one of three different "domains" (see also
 strategies and are optimized for different purposes. The specific details on
 how every domain allocates memory or what internal functions each domain calls
 is considered an implementation detail, but for debugging purposes a simplified
-table can be found at :ref:`here <default-memory-allocators>`. There is no hard
-requirement to use the memory returned by the allocation functions belonging to
-a given domain for only the purposes hinted by that domain (although this is the
-recommended practice). For example, one could use the memory returned by
-:c:func:`PyMem_RawMalloc` for allocating Python objects or the memory returned
-by :c:func:`PyObject_Malloc` for allocating memory for buffers.
+table can be found at :ref:`here <default-memory-allocators>`.
+The APIs used to allocate and free a block of memory must be from the same domain.
+For example, :c:func:`PyMem_Free` must be used to free memory allocated using :c:func:`PyMem_Malloc`.
 
 The three allocation domains are:
 
 * Raw domain: intended for allocating memory for general-purpose memory
   buffers where the allocation *must* go to the system allocator or where the
   allocator can operate without the :term:`GIL`. The memory is requested directly
-  to the system.
+  from the system. See :ref:`Raw Memory Interface <raw-memoryinterface>`.
 
 * "Mem" domain: intended for allocating memory for Python buffers and
   general-purpose memory buffers where the allocation must be performed with
   the :term:`GIL` held. The memory is taken from the Python private heap.
+  See :ref:`Memory Interface <memoryinterface>`.
 
-* Object domain: intended for allocating memory belonging to Python objects. The
-  memory is taken from the Python private heap.
+* Object domain: intended for allocating memory for Python objects. The
+  memory is taken from the Python private heap. See :ref:`Object allocators <objectinterface>`.
 
-When freeing memory previously allocated by the allocating functions belonging to a
-given domain,the matching specific deallocating functions must be used. For example,
-:c:func:`PyMem_Free` must be used to free memory allocated using :c:func:`PyMem_Malloc`.
+.. note::
+
+  The :term:`free-threaded <free threading>` build requires that only Python objects are allocated using the "object" domain
+  and that all Python objects are allocated using that domain. This differs from the prior Python versions,
+  where this was only a best practice and not a hard requirement.
+
+  For example, buffers (non-Python objects) should be allocated using :c:func:`PyMem_Malloc`,
+  :c:func:`PyMem_RawMalloc`, or :c:func:`malloc`, but not :c:func:`PyObject_Malloc`.
+
+  See :ref:`Memory Allocation APIs <free-threaded-memory-allocation>`.
+
+
+.. _raw-memoryinterface:
 
 Raw Memory Interface
 ====================
@@ -299,6 +307,8 @@ versions and is therefore deprecated in extension modules.
 * ``PyMem_DEL(ptr)``
 
 
+.. _objectinterface:
+
 Object allocators
 =================
 
diff --git a/Doc/c-api/module.rst b/Doc/c-api/module.rst
index 6fe1ce9e994832..f82a050ab75de0 100644
--- a/Doc/c-api/module.rst
+++ b/Doc/c-api/module.rst
@@ -37,16 +37,19 @@ Module Objects
       single: __package__ (module attribute)
       single: __loader__ (module attribute)
 
-   Return a new module object with the :attr:`__name__` attribute set to *name*.
-   The module's :attr:`__name__`, :attr:`__doc__`, :attr:`__package__`, and
-   :attr:`__loader__` attributes are filled in (all but :attr:`__name__` are set
-   to ``None``); the caller is responsible for providing a :attr:`__file__`
-   attribute.
+   Return a new module object with :attr:`module.__name__` set to *name*.
+   The module's :attr:`!__name__`, :attr:`~module.__doc__`,
+   :attr:`~module.__package__` and :attr:`~module.__loader__` attributes are
+   filled in (all but :attr:`!__name__` are set to ``None``). The caller is
+   responsible for setting a :attr:`~module.__file__` attribute.
+
+   Return ``NULL`` with an exception set on error.
 
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.4
-      :attr:`__package__` and :attr:`__loader__` are set to ``None``.
+      :attr:`~module.__package__` and :attr:`~module.__loader__` are now set to
+      ``None``.
 
 
 .. c:function:: PyObject* PyModule_New(const char *name)
@@ -75,8 +78,9 @@ Module Objects
       single: __name__ (module attribute)
       single: SystemError (built-in exception)
 
-   Return *module*'s :attr:`__name__` value.  If the module does not provide one,
-   or if it is not a string, :exc:`SystemError` is raised and ``NULL`` is returned.
+   Return *module*'s :attr:`~module.__name__` value.  If the module does not
+   provide one, or if it is not a string, :exc:`SystemError` is raised and
+   ``NULL`` is returned.
 
    .. versionadded:: 3.3
 
@@ -106,8 +110,8 @@ Module Objects
       single: SystemError (built-in exception)
 
    Return the name of the file from which *module* was loaded using *module*'s
-   :attr:`__file__` attribute.  If this is not defined, or if it is not a
-   unicode string, raise :exc:`SystemError` and return ``NULL``; otherwise return
+   :attr:`~module.__file__` attribute.  If this is not defined, or if it is not a
+   string, raise :exc:`SystemError` and return ``NULL``; otherwise return
    a reference to a Unicode object.
 
    .. versionadded:: 3.2
@@ -265,6 +269,8 @@ of the following two module creation functions:
    API version *module_api_version*.  If that version does not match the version
    of the running interpreter, a :exc:`RuntimeWarning` is emitted.
 
+   Return ``NULL`` with an exception set on error.
+
    .. note::
 
       Most uses of this function should be using :c:func:`PyModule_Create`
@@ -338,7 +344,8 @@ The available slot types are:
    The *value* pointer of this slot must point to a function of the signature:
 
    .. c:function:: PyObject* create_module(PyObject *spec, PyModuleDef *def)
-      :noindex:
+      :no-index-entry:
+      :no-contents-entry:
 
    The function receives a :py:class:`~importlib.machinery.ModuleSpec`
    instance, as defined in :PEP:`451`, and the module definition.
@@ -373,7 +380,8 @@ The available slot types are:
    The signature of the function is:
 
    .. c:function:: int exec_module(PyObject* module)
-      :noindex:
+      :no-index-entry:
+      :no-contents-entry:
 
    If multiple ``Py_mod_exec`` slots are specified, they are processed in the
    order they appear in the *m_slots* array.
@@ -415,6 +423,8 @@ The available slot types are:
 
    Specifies one of the following values:
 
+   .. c:namespace:: NULL
+
    .. c:macro:: Py_MOD_GIL_USED
 
       The module depends on the presence of the global interpreter lock (GIL),
@@ -427,14 +437,14 @@ The available slot types are:
    This slot is ignored by Python builds not configured with
    :option:`--disable-gil`.  Otherwise, it determines whether or not importing
    this module will cause the GIL to be automatically enabled. See
-   :envvar:`PYTHON_GIL` and :option:`-X gil <-X>` for more detail.
+   :ref:`whatsnew313-free-threaded-cpython` for more detail.
 
    Multiple ``Py_mod_gil`` slots may not be specified in one module definition.
 
    If ``Py_mod_gil`` is not specified, the import machinery defaults to
    ``Py_MOD_GIL_USED``.
 
-   .. versionadded: 3.13
+   .. versionadded:: 3.13
 
 See :PEP:`489` for more details on multi-phase initialization.
 
@@ -461,6 +471,8 @@ objects dynamically. Note that both ``PyModule_FromDefAndSpec`` and
    If that version does not match the version of the running interpreter,
    a :exc:`RuntimeWarning` is emitted.
 
+   Return ``NULL`` with an exception set on error.
+
    .. note::
 
       Most uses of this function should be using :c:func:`PyModule_FromDefAndSpec`
@@ -511,7 +523,7 @@ state:
 
    On success, return ``0``. On error, raise an exception and return ``-1``.
 
-   Return ``NULL`` if *value* is ``NULL``. It must be called with an exception
+   Return ``-1`` if *value* is ``NULL``. It must be called with an exception
    raised in this case.
 
    Example usage::
@@ -543,6 +555,14 @@ state:
    Note that ``Py_XDECREF()`` should be used instead of ``Py_DECREF()`` in
    this case, since *obj* can be ``NULL``.
 
+   The number of different *name* strings passed to this function
+   should be kept small, usually by only using statically allocated strings
+   as *name*.
+   For names that aren't known at compile time, prefer calling
+   :c:func:`PyUnicode_FromString` and :c:func:`PyObject_SetAttr` directly.
+   For more details, see :c:func:`PyUnicode_InternFromString`, which may be
+   used internally to create a key object.
+
    .. versionadded:: 3.10
 
 
@@ -601,15 +621,23 @@ state:
 .. c:function:: int PyModule_AddIntConstant(PyObject *module, const char *name, long value)
 
    Add an integer constant to *module* as *name*.  This convenience function can be
-   used from the module's initialization function. Return ``-1`` on error, ``0`` on
-   success.
+   used from the module's initialization function.
+   Return ``-1`` with an exception set on error, ``0`` on success.
+
+   This is a convenience function that calls :c:func:`PyLong_FromLong` and
+   :c:func:`PyModule_AddObjectRef`; see their documentation for details.
 
 
 .. c:function:: int PyModule_AddStringConstant(PyObject *module, const char *name, const char *value)
 
    Add a string constant to *module* as *name*.  This convenience function can be
    used from the module's initialization function.  The string *value* must be
-   ``NULL``-terminated.  Return ``-1`` on error, ``0`` on success.
+   ``NULL``-terminated.
+   Return ``-1`` with an exception set on error, ``0`` on success.
+
+   This is a convenience function that calls
+   :c:func:`PyUnicode_InternFromString` and :c:func:`PyModule_AddObjectRef`;
+   see their documentation for details.
 
 
 .. c:macro:: PyModule_AddIntMacro(module, macro)
@@ -617,7 +645,7 @@ state:
    Add an int constant to *module*. The name and the value are taken from
    *macro*. For example ``PyModule_AddIntMacro(module, AF_INET)`` adds the int
    constant *AF_INET* with the value of *AF_INET* to *module*.
-   Return ``-1`` on error, ``0`` on success.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
 
 .. c:macro:: PyModule_AddStringMacro(module, macro)
@@ -630,7 +658,7 @@ state:
    The type object is finalized by calling internally :c:func:`PyType_Ready`.
    The name of the type object is taken from the last component of
    :c:member:`~PyTypeObject.tp_name` after dot.
-   Return ``-1`` on error, ``0`` on success.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
    .. versionadded:: 3.9
 
@@ -643,7 +671,7 @@ state:
    import machinery assumes the module does not support running without the
    GIL. This function is only available in Python builds configured with
    :option:`--disable-gil`.
-   Return ``-1`` on error, ``0`` on success.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
    .. versionadded:: 3.13
 
@@ -682,14 +710,14 @@ since multiple such modules can be created from a single definition.
 
    The caller must hold the GIL.
 
-   Return 0 on success or -1 on failure.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
    .. versionadded:: 3.3
 
 .. c:function:: int PyState_RemoveModule(PyModuleDef *def)
 
    Removes the module object created from *def* from the interpreter state.
-   Return 0 on success or -1 on failure.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
    The caller must hold the GIL.
 
diff --git a/Doc/c-api/monitoring.rst b/Doc/c-api/monitoring.rst
index 763ec8ef761e4e..51d866cfd47469 100644
--- a/Doc/c-api/monitoring.rst
+++ b/Doc/c-api/monitoring.rst
@@ -1,8 +1,8 @@
 .. highlight:: c
 
-.. _monitoring:
+.. _c-api-monitoring:
 
-Monitorong C API
+Monitoring C API
 ================
 
 Added in version 3.13.
@@ -121,10 +121,10 @@ See :mod:`sys.monitoring` for descriptions of the events.
    :c:func:`PyErr_GetRaisedException`).
 
 
-.. c:function:: int PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset)
+.. c:function:: int PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset, PyObject *value)
 
-   Fire a ``STOP_ITERATION`` event with the current exception (as returned by
-   :c:func:`PyErr_GetRaisedException`).
+   Fire a ``STOP_ITERATION`` event. If ``value`` is an instance of :exc:`StopIteration`, it is used. Otherwise,
+   a new :exc:`StopIteration` instance is created with ``value`` as its argument.
 
 
 Managing the Monitoring State
@@ -133,7 +133,7 @@ Managing the Monitoring State
 Monitoring states can be managed with the help of monitoring scopes. A scope
 would typically correspond to a python function.
 
-.. :c:function:: int PyMonitoring_EnterScope(PyMonitoringState *state_array, uint64_t *version, const uint8_t *event_types, Py_ssize_t length)
+.. c:function:: int PyMonitoring_EnterScope(PyMonitoringState *state_array, uint64_t *version, const uint8_t *event_types, Py_ssize_t length)
 
    Enter a monitored scope. ``event_types`` is an array of the event IDs for
    events that may be fired from the scope. For example, the ID of a ``PY_START``
@@ -141,24 +141,52 @@ would typically correspond to a python function.
    to the base-2 logarithm of ``sys.monitoring.events.PY_START``.
    ``state_array`` is an array with a monitoring state entry for each event in
    ``event_types``, it is allocated by the user but populated by
-   ``PyMonitoring_EnterScope`` with information about the activation state of
+   :c:func:`!PyMonitoring_EnterScope` with information about the activation state of
    the event. The size of ``event_types`` (and hence also of ``state_array``)
    is given in ``length``.
 
    The ``version`` argument is a pointer to a value which should be allocated
    by the user together with ``state_array`` and initialized to 0,
-   and then set only by ``PyMonitoring_EnterScope`` itelf. It allows this
+   and then set only by :c:func:`!PyMonitoring_EnterScope` itself. It allows this
    function to determine whether event states have changed since the previous call,
    and to return quickly if they have not.
 
    The scopes referred to here are lexical scopes: a function, class or method.
-   ``PyMonitoring_EnterScope`` should be called whenever the lexical scope is
+   :c:func:`!PyMonitoring_EnterScope` should be called whenever the lexical scope is
    entered. Scopes can be reentered, reusing the same *state_array* and *version*,
    in situations like when emulating a recursive Python function. When a code-like's
    execution is paused, such as when emulating a generator, the scope needs to
    be exited and re-entered.
 
-
-.. :c:function:: int PyMonitoring_ExitScope(void)
-
-   Exit the last scope that was entered with ``PyMonitoring_EnterScope``.
+   The macros for *event_types* are:
+
+   .. c:namespace:: NULL
+
+   .. The table is here to make the docs searchable, and to allow automatic
+      links to the identifiers.
+
+   ================================================== =====================================
+   Macro                                              Event
+   ================================================== =====================================
+   .. c:macro:: PY_MONITORING_EVENT_BRANCH            :monitoring-event:`BRANCH`
+   .. c:macro:: PY_MONITORING_EVENT_CALL              :monitoring-event:`CALL`
+   .. c:macro:: PY_MONITORING_EVENT_C_RAISE           :monitoring-event:`C_RAISE`
+   .. c:macro:: PY_MONITORING_EVENT_C_RETURN          :monitoring-event:`C_RETURN`
+   .. c:macro:: PY_MONITORING_EVENT_EXCEPTION_HANDLED :monitoring-event:`EXCEPTION_HANDLED`
+   .. c:macro:: PY_MONITORING_EVENT_INSTRUCTION       :monitoring-event:`INSTRUCTION`
+   .. c:macro:: PY_MONITORING_EVENT_JUMP              :monitoring-event:`JUMP`
+   .. c:macro:: PY_MONITORING_EVENT_LINE              :monitoring-event:`LINE`
+   .. c:macro:: PY_MONITORING_EVENT_PY_RESUME         :monitoring-event:`PY_RESUME`
+   .. c:macro:: PY_MONITORING_EVENT_PY_RETURN         :monitoring-event:`PY_RETURN`
+   .. c:macro:: PY_MONITORING_EVENT_PY_START          :monitoring-event:`PY_START`
+   .. c:macro:: PY_MONITORING_EVENT_PY_THROW          :monitoring-event:`PY_THROW`
+   .. c:macro:: PY_MONITORING_EVENT_PY_UNWIND         :monitoring-event:`PY_UNWIND`
+   .. c:macro:: PY_MONITORING_EVENT_PY_YIELD          :monitoring-event:`PY_YIELD`
+   .. c:macro:: PY_MONITORING_EVENT_RAISE             :monitoring-event:`RAISE`
+   .. c:macro:: PY_MONITORING_EVENT_RERAISE           :monitoring-event:`RERAISE`
+   .. c:macro:: PY_MONITORING_EVENT_STOP_ITERATION    :monitoring-event:`STOP_ITERATION`
+   ================================================== =====================================
+
+.. c:function:: int PyMonitoring_ExitScope(void)
+
+   Exit the last scope that was entered with :c:func:`!PyMonitoring_EnterScope`.
diff --git a/Doc/c-api/number.rst b/Doc/c-api/number.rst
index 13d3c5af956905..ad8b5935258fa7 100644
--- a/Doc/c-api/number.rst
+++ b/Doc/c-api/number.rst
@@ -51,8 +51,8 @@ Number Protocol
 
    Return a reasonable approximation for the mathematical value of *o1* divided by
    *o2*, or ``NULL`` on failure.  The return value is "approximate" because binary
-   floating point numbers are approximate; it is not possible to represent all real
-   numbers in base two.  This function can return a floating point value when
+   floating-point numbers are approximate; it is not possible to represent all real
+   numbers in base two.  This function can return a floating-point value when
    passed two integers.  This is the equivalent of the Python expression ``o1 / o2``.
 
 
@@ -177,8 +177,8 @@ Number Protocol
 
    Return a reasonable approximation for the mathematical value of *o1* divided by
    *o2*, or ``NULL`` on failure.  The return value is "approximate" because binary
-   floating point numbers are approximate; it is not possible to represent all real
-   numbers in base two.  This function can return a floating point value when
+   floating-point numbers are approximate; it is not possible to represent all real
+   numbers in base two.  This function can return a floating-point value when
    passed two integers.  The operation is done *in-place* when *o1* supports it.
    This is the equivalent of the Python statement ``o1 /= o2``.
 
diff --git a/Doc/c-api/object.rst b/Doc/c-api/object.rst
index ba454db9117504..8bb392af01fcd2 100644
--- a/Doc/c-api/object.rst
+++ b/Doc/c-api/object.rst
@@ -52,6 +52,7 @@ Object Protocol
 
    The reference is borrowed from the interpreter, and is valid until the
    interpreter finalization.
+
    .. versionadded:: 3.13
 
 
@@ -65,7 +66,7 @@ Object Protocol
 
    Properly handle returning :c:data:`Py_NotImplemented` from within a C
    function (that is, create a new :term:`strong reference`
-   to NotImplemented and return it).
+   to :const:`NotImplemented` and return it).
 
 
 .. c:macro:: Py_PRINT_RAW
@@ -84,7 +85,7 @@ Object Protocol
    instead of the :func:`repr`.
 
 
-.. c:function:: int PyObject_HasAttrWithError(PyObject *o, const char *attr_name)
+.. c:function:: int PyObject_HasAttrWithError(PyObject *o, PyObject *attr_name)
 
    Returns ``1`` if *o* has the attribute *attr_name*, and ``0`` otherwise.
    This is equivalent to the Python expression ``hasattr(o, attr_name)``.
@@ -110,7 +111,8 @@ Object Protocol
    .. note::
 
       Exceptions that occur when this calls :meth:`~object.__getattr__` and
-      :meth:`~object.__getattribute__` methods are silently ignored.
+      :meth:`~object.__getattribute__` methods aren't propagated,
+      but instead given to :func:`sys.unraisablehook`.
       For proper error handling, use :c:func:`PyObject_HasAttrWithError`,
       :c:func:`PyObject_GetOptionalAttr` or :c:func:`PyObject_GetAttr` instead.
 
@@ -205,6 +207,13 @@ Object Protocol
    If *v* is ``NULL``, the attribute is deleted, but this feature is
    deprecated in favour of using :c:func:`PyObject_DelAttrString`.
 
+   The number of different attribute names passed to this function
+   should be kept small, usually by using a statically allocated string
+   as *attr_name*.
+   For attribute names that aren't known at compile time, prefer calling
+   :c:func:`PyUnicode_FromString` and :c:func:`PyObject_SetAttr` directly.
+   For more details, see :c:func:`PyUnicode_InternFromString`, which may be
+   used internally to create a key object.
 
 .. c:function:: int PyObject_GenericSetAttr(PyObject *o, PyObject *name, PyObject *value)
 
@@ -230,6 +239,14 @@ Object Protocol
    specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
    rather than a :c:expr:`PyObject*`.
 
+   The number of different attribute names passed to this function
+   should be kept small, usually by using a statically allocated string
+   as *attr_name*.
+   For attribute names that aren't known at compile time, prefer calling
+   :c:func:`PyUnicode_FromString` and :c:func:`PyObject_DelAttr` directly.
+   For more details, see :c:func:`PyUnicode_InternFromString`, which may be
+   used internally to create a key object for lookup.
+
 
 .. c:function:: PyObject* PyObject_GenericGetDict(PyObject *o, void *context)
 
@@ -351,14 +368,14 @@ Object Protocol
    The result will be ``1`` when at least one of the checks returns ``1``,
    otherwise it will be ``0``.
 
-   If *cls* has a :meth:`~class.__subclasscheck__` method, it will be called to
+   If *cls* has a :meth:`~type.__subclasscheck__` method, it will be called to
    determine the subclass status as described in :pep:`3119`.  Otherwise,
    *derived* is a subclass of *cls* if it is a direct or indirect subclass,
-   i.e. contained in ``cls.__mro__``.
+   i.e. contained in :attr:`cls.__mro__ <type.__mro__>`.
 
    Normally only class objects, i.e. instances of :class:`type` or a derived
    class, are considered classes.  However, objects can override this by having
-   a :attr:`~class.__bases__` attribute (which must be a tuple of base classes).
+   a :attr:`~type.__bases__` attribute (which must be a tuple of base classes).
 
 
 .. c:function:: int PyObject_IsInstance(PyObject *inst, PyObject *cls)
@@ -370,15 +387,15 @@ Object Protocol
    The result will be ``1`` when at least one of the checks returns ``1``,
    otherwise it will be ``0``.
 
-   If *cls* has a :meth:`~class.__instancecheck__` method, it will be called to
+   If *cls* has a :meth:`~type.__instancecheck__` method, it will be called to
    determine the subclass status as described in :pep:`3119`.  Otherwise, *inst*
    is an instance of *cls* if its class is a subclass of *cls*.
 
    An instance *inst* can override what is considered its class by having a
-   :attr:`~instance.__class__` attribute.
+   :attr:`~object.__class__` attribute.
 
    An object *cls* can override if it is considered a class, and what its base
-   classes are, by having a :attr:`~class.__bases__` attribute (which must be a tuple
+   classes are, by having a :attr:`~type.__bases__` attribute (which must be a tuple
    of base classes).
 
 
@@ -476,6 +493,13 @@ Object Protocol
    on failure.  This is equivalent to the Python statement ``del o[key]``.
 
 
+.. c:function:: int PyObject_DelItemString(PyObject *o, const char *key)
+
+   This is the same as :c:func:`PyObject_DelItem`, but *key* is
+   specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+   rather than a :c:expr:`PyObject*`.
+
+
 .. c:function:: PyObject* PyObject_Dir(PyObject *o)
 
    This is equivalent to the Python expression ``dir(o)``, returning a (possibly
@@ -493,6 +517,12 @@ Object Protocol
    iterated.
 
 
+.. c:function:: PyObject* PyObject_SelfIter(PyObject *obj)
+
+   This is equivalent to the Python ``__iter__(self): return self`` method.
+   It is intended for :term:`iterator` types, to be used in the :c:member:`PyTypeObject.tp_iter` slot.
+
+
 .. c:function:: PyObject* PyObject_GetAIter(PyObject *o)
 
    This is the equivalent to the Python expression ``aiter(o)``. Takes an
diff --git a/Doc/c-api/refcounting.rst b/Doc/c-api/refcounting.rst
index bf50107347e0e7..d75dad737bc992 100644
--- a/Doc/c-api/refcounting.rst
+++ b/Doc/c-api/refcounting.rst
@@ -62,7 +62,7 @@ of Python objects.
    ``NULL``, use :c:func:`Py_XINCREF`.
 
    Do not expect this function to actually modify *o* in any way.
-   For at least `some objects <https://peps.python.org/pep-0683/>`_,
+   For at least :pep:`some objects <0683>`,
    this function has no effect.
 
    .. versionchanged:: 3.12
@@ -130,7 +130,7 @@ of Python objects.
    use :c:func:`Py_XDECREF`.
 
    Do not expect this function to actually modify *o* in any way.
-   For at least `some objects <https://peps.python.org/pep-0683/>`_,
+   For at least :pep:`some objects <683>`,
    this function has no effect.
 
    .. warning::
diff --git a/Doc/c-api/reflection.rst b/Doc/c-api/reflection.rst
index 4b1c4770848a30..038e6977104560 100644
--- a/Doc/c-api/reflection.rst
+++ b/Doc/c-api/reflection.rst
@@ -7,18 +7,48 @@ Reflection
 
 .. c:function:: PyObject* PyEval_GetBuiltins(void)
 
+   .. deprecated:: 3.13
+
+      Use :c:func:`PyEval_GetFrameBuiltins` instead.
+
    Return a dictionary of the builtins in the current execution frame,
    or the interpreter of the thread state if no frame is currently executing.
 
 
 .. c:function:: PyObject* PyEval_GetLocals(void)
 
-   Return a dictionary of the local variables in the current execution frame,
+   .. deprecated:: 3.13
+
+      Use either :c:func:`PyEval_GetFrameLocals` to obtain the same behaviour as calling
+      :func:`locals` in Python code, or else call :c:func:`PyFrame_GetLocals` on the result
+      of :c:func:`PyEval_GetFrame` to access the :attr:`~frame.f_locals` attribute of the
+      currently executing frame.
+
+   Return a mapping providing access to the local variables in the current execution frame,
    or ``NULL`` if no frame is currently executing.
 
+   Refer to :func:`locals` for details of the mapping returned at different scopes.
+
+   As this function returns a :term:`borrowed reference`, the dictionary returned for
+   :term:`optimized scopes <optimized scope>` is cached on the frame object and will remain
+   alive as long as the frame object does. Unlike :c:func:`PyEval_GetFrameLocals` and
+   :func:`locals`, subsequent calls to this function in the same frame will update the
+   contents of the cached dictionary to reflect changes in the state of the local variables
+   rather than returning a new snapshot.
+
+   .. versionchanged:: 3.13
+      As part of :pep:`667`, :c:func:`PyFrame_GetLocals`, :func:`locals`, and
+      :attr:`FrameType.f_locals <frame.f_locals>` no longer make use of the shared cache
+      dictionary. Refer to the :ref:`What's New entry <whatsnew313-locals-semantics>` for
+      additional details.
+
 
 .. c:function:: PyObject* PyEval_GetGlobals(void)
 
+   .. deprecated:: 3.13
+
+      Use :c:func:`PyEval_GetFrameGlobals` instead.
+
    Return a dictionary of the global variables in the current execution frame,
    or ``NULL`` if no frame is currently executing.
 
@@ -31,6 +61,36 @@ Reflection
    See also :c:func:`PyThreadState_GetFrame`.
 
 
+.. c:function:: PyObject* PyEval_GetFrameBuiltins(void)
+
+   Return a dictionary of the builtins in the current execution frame,
+   or the interpreter of the thread state if no frame is currently executing.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: PyObject* PyEval_GetFrameLocals(void)
+
+   Return a dictionary of the local variables in the current execution frame,
+   or ``NULL`` if no frame is currently executing. Equivalent to calling
+   :func:`locals` in Python code.
+
+   To access :attr:`~frame.f_locals` on the current frame without making an independent
+   snapshot in :term:`optimized scopes <optimized scope>`, call :c:func:`PyFrame_GetLocals`
+   on the result of :c:func:`PyEval_GetFrame`.
+
+   .. versionadded:: 3.13
+
+
+.. c:function:: PyObject* PyEval_GetFrameGlobals(void)
+
+   Return a dictionary of the global variables in the current execution frame,
+   or ``NULL`` if no frame is currently executing. Equivalent to calling
+   :func:`globals` in Python code.
+
+   .. versionadded:: 3.13
+
+
 .. c:function:: const char* PyEval_GetFuncName(PyObject *func)
 
    Return the name of *func* if it is a function, class or instance object, else the
diff --git a/Doc/c-api/slice.rst b/Doc/c-api/slice.rst
index 27a1757c745d8b..8adf6a961378a3 100644
--- a/Doc/c-api/slice.rst
+++ b/Doc/c-api/slice.rst
@@ -23,7 +23,9 @@ Slice Objects
    Return a new slice object with the given values.  The *start*, *stop*, and
    *step* parameters are used as the values of the slice object attributes of
    the same names.  Any of the values may be ``NULL``, in which case the
-   ``None`` will be used for the corresponding attribute.  Return ``NULL`` if
+   ``None`` will be used for the corresponding attribute.
+
+   Return ``NULL`` with an exception set if
    the new object could not be allocated.
 
 
@@ -52,7 +54,7 @@ Slice Objects
    of bounds indices are clipped in a manner consistent with the handling of
    normal slices.
 
-   Returns ``0`` on success and ``-1`` on error with exception set.
+   Return ``0`` on success and ``-1`` on error with an exception set.
 
    .. note::
       This function is considered not safe for resizable sequences.
@@ -95,7 +97,7 @@ Slice Objects
    ``PY_SSIZE_T_MIN`` to ``PY_SSIZE_T_MIN``, and silently boost the step
    values less than ``-PY_SSIZE_T_MAX`` to ``-PY_SSIZE_T_MAX``.
 
-   Return ``-1`` on error, ``0`` on success.
+   Return ``-1`` with an exception set on error, ``0`` on success.
 
    .. versionadded:: 3.6.1
 
diff --git a/Doc/c-api/stable.rst b/Doc/c-api/stable.rst
index 5b9e43874c7f2b..124e58cf950b7a 100644
--- a/Doc/c-api/stable.rst
+++ b/Doc/c-api/stable.rst
@@ -66,7 +66,7 @@ Limited C API
 
 Python 3.2 introduced the *Limited API*, a subset of Python's C API.
 Extensions that only use the Limited API can be
-compiled once and work with multiple versions of Python.
+compiled once and be loaded on multiple versions of Python.
 Contents of the Limited API are :ref:`listed below <limited-api-list>`.
 
 .. c:macro:: Py_LIMITED_API
@@ -76,7 +76,7 @@ Contents of the Limited API are :ref:`listed below <limited-api-list>`.
 
    Define ``Py_LIMITED_API`` to the value of :c:macro:`PY_VERSION_HEX`
    corresponding to the lowest Python version your extension supports.
-   The extension will work without recompilation with all Python 3 releases
+   The extension will be ABI-compatible with all Python 3 releases
    from the specified one onward, and can use Limited API introduced up to that
    version.
 
@@ -94,7 +94,15 @@ Stable ABI
 ----------
 
 To enable this, Python provides a *Stable ABI*: a set of symbols that will
-remain compatible across Python 3.x versions.
+remain ABI-compatible across Python 3.x versions.
+
+.. note::
+
+   The Stable ABI prevents ABI issues, like linker errors due to missing
+   symbols or data corruption due to changes in structure layouts or function
+   signatures.
+   However, other changes in Python can change the *behavior* of extensions.
+   See Python's Backwards Compatibility Policy (:pep:`387`) for details.
 
 The Stable ABI contains symbols exposed in the :ref:`Limited API
 <limited-c-api>`, but also other ones – for example, functions necessary to
diff --git a/Doc/c-api/sys.rst b/Doc/c-api/sys.rst
index d6fca1a0b0a219..c688afdca8231d 100644
--- a/Doc/c-api/sys.rst
+++ b/Doc/c-api/sys.rst
@@ -426,3 +426,7 @@ Process Control
    function registered last is called first. Each cleanup function will be called
    at most once.  Since Python's internal finalization will have completed before
    the cleanup function, no Python APIs should be called by *func*.
+
+   .. seealso::
+
+      :c:func:`PyUnstable_AtExit` for passing a ``void *data`` argument.
diff --git a/Doc/c-api/time.rst b/Doc/c-api/time.rst
index 5cfdef71b3e191..7032cc48aa6913 100644
--- a/Doc/c-api/time.rst
+++ b/Doc/c-api/time.rst
@@ -1,5 +1,7 @@
 .. highlight:: c
 
+.. _c-api-time:
+
 PyTime C API
 ============
 
diff --git a/Doc/c-api/tuple.rst b/Doc/c-api/tuple.rst
index 0d68a360f347f8..2944b8d342c9a8 100644
--- a/Doc/c-api/tuple.rst
+++ b/Doc/c-api/tuple.rst
@@ -33,12 +33,14 @@ Tuple Objects
 
 .. c:function:: PyObject* PyTuple_New(Py_ssize_t len)
 
-   Return a new tuple object of size *len*, or ``NULL`` on failure.
+   Return a new tuple object of size *len*,
+   or ``NULL`` with an exception set on failure.
 
 
 .. c:function:: PyObject* PyTuple_Pack(Py_ssize_t n, ...)
 
-   Return a new tuple object of size *n*, or ``NULL`` on failure. The tuple values
+   Return a new tuple object of size *n*,
+   or ``NULL`` with an exception set on failure. The tuple values
    are initialized to the subsequent *n* C arguments pointing to Python objects.
    ``PyTuple_Pack(2, a, b)`` is equivalent to ``Py_BuildValue("(OO)", a, b)``.
 
@@ -46,12 +48,12 @@ Tuple Objects
 .. c:function:: Py_ssize_t PyTuple_Size(PyObject *p)
 
    Take a pointer to a tuple object, and return the size of that tuple.
+   On error, return ``-1`` and with an exception set.
 
 
 .. c:function:: Py_ssize_t PyTuple_GET_SIZE(PyObject *p)
 
-   Return the size of the tuple *p*, which must be non-``NULL`` and point to a tuple;
-   no error checking is performed.
+   Like :c:func:`PyTuple_Size`, but without error checking.
 
 
 .. c:function:: PyObject* PyTuple_GetItem(PyObject *p, Py_ssize_t pos)
@@ -74,8 +76,10 @@ Tuple Objects
 .. c:function:: PyObject* PyTuple_GetSlice(PyObject *p, Py_ssize_t low, Py_ssize_t high)
 
    Return the slice of the tuple pointed to by *p* between *low* and *high*,
-   or ``NULL`` on failure.  This is the equivalent of the Python expression
-   ``p[low:high]``.  Indexing from the end of the tuple is not supported.
+   or ``NULL`` with an exception set on failure.
+
+   This is the equivalent of the Python expression ``p[low:high]``.
+   Indexing from the end of the tuple is not supported.
 
 
 .. c:function:: int PyTuple_SetItem(PyObject *p, Py_ssize_t pos, PyObject *o)
@@ -135,6 +139,8 @@ type.
    Create a new struct sequence type from the data in *desc*, described below. Instances
    of the resulting type can be created with :c:func:`PyStructSequence_New`.
 
+   Return ``NULL`` with an exception set on failure.
+
 
 .. c:function:: void PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
 
@@ -143,8 +149,8 @@ type.
 
 .. c:function:: int PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)
 
-   The same as ``PyStructSequence_InitType``, but returns ``0`` on success and ``-1`` on
-   failure.
+   Like :c:func:`PyStructSequence_InitType`, but returns ``0`` on success
+   and ``-1`` with an exception set on failure.
 
    .. versionadded:: 3.4
 
@@ -155,7 +161,8 @@ type.
 
    .. c:member:: const char *name
 
-      Name of the struct sequence type.
+      Fully qualified name of the type; null-terminated UTF-8 encoded.
+      The name must contain the module name.
 
    .. c:member:: const char *doc
 
@@ -201,6 +208,8 @@ type.
    Creates an instance of *type*, which must have been created with
    :c:func:`PyStructSequence_NewType`.
 
+   Return ``NULL`` with an exception set on failure.
+
 
 .. c:function:: PyObject* PyStructSequence_GetItem(PyObject *p, Py_ssize_t pos)
 
diff --git a/Doc/c-api/type.rst b/Doc/c-api/type.rst
index 0cae5c09505ebe..730c89dc3cdfa6 100644
--- a/Doc/c-api/type.rst
+++ b/Doc/c-api/type.rst
@@ -53,7 +53,8 @@ Type Objects
 .. c:function:: PyObject* PyType_GetDict(PyTypeObject* type)
 
    Return the type object's internal namespace, which is otherwise only
-   exposed via a read-only proxy (``cls.__dict__``).  This is a
+   exposed via a read-only proxy (:attr:`cls.__dict__ <type.__dict__>`).
+   This is a
    replacement for accessing :c:member:`~PyTypeObject.tp_dict` directly.
    The returned dictionary must be treated as read-only.
 
@@ -140,7 +141,7 @@ Type Objects
    Return true if *a* is a subtype of *b*.
 
    This function only checks for actual subtypes, which means that
-   :meth:`~class.__subclasscheck__` is not called on *b*.  Call
+   :meth:`~type.__subclasscheck__` is not called on *b*.  Call
    :c:func:`PyObject_IsSubclass` to do the same check that :func:`issubclass`
    would do.
 
@@ -174,29 +175,30 @@ Type Objects
 
 .. c:function:: PyObject* PyType_GetName(PyTypeObject *type)
 
-   Return the type's name. Equivalent to getting the type's ``__name__`` attribute.
+   Return the type's name. Equivalent to getting the type's
+   :attr:`~type.__name__` attribute.
 
    .. versionadded:: 3.11
 
 .. c:function:: PyObject* PyType_GetQualName(PyTypeObject *type)
 
    Return the type's qualified name. Equivalent to getting the
-   type's ``__qualname__`` attribute.
+   type's :attr:`~type.__qualname__` attribute.
 
    .. versionadded:: 3.11
 
 .. c:function:: PyObject* PyType_GetFullyQualifiedName(PyTypeObject *type)
 
    Return the type's fully qualified name. Equivalent to
-   ``f"{type.__module__}.{type.__qualname__}"``, or ``type.__qualname__`` if
-   ``type.__module__`` is not a string or is equal to ``"builtins"``.
+   ``f"{type.__module__}.{type.__qualname__}"``, or :attr:`type.__qualname__`
+   if :attr:`type.__module__` is not a string or is equal to ``"builtins"``.
 
    .. versionadded:: 3.13
 
 .. c:function:: PyObject* PyType_GetModuleName(PyTypeObject *type)
 
-   Return the type's module name. Equivalent to getting the ``type.__module__``
-   attribute.
+   Return the type's module name. Equivalent to getting the
+   :attr:`type.__module__` attribute.
 
    .. versionadded:: 3.13
 
@@ -478,19 +480,19 @@ The following functions and structs are used to create
 
       The following “offset” fields cannot be set using :c:type:`PyType_Slot`:
 
-         * :c:member:`~PyTypeObject.tp_weaklistoffset`
-           (use :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead if possible)
-         * :c:member:`~PyTypeObject.tp_dictoffset`
-           (use :c:macro:`Py_TPFLAGS_MANAGED_DICT` instead if possible)
-         * :c:member:`~PyTypeObject.tp_vectorcall_offset`
-           (use ``"__vectorcalloffset__"`` in
-           :ref:`PyMemberDef <pymemberdef-offsets>`)
+      * :c:member:`~PyTypeObject.tp_weaklistoffset`
+        (use :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead if possible)
+      * :c:member:`~PyTypeObject.tp_dictoffset`
+        (use :c:macro:`Py_TPFLAGS_MANAGED_DICT` instead if possible)
+      * :c:member:`~PyTypeObject.tp_vectorcall_offset`
+        (use ``"__vectorcalloffset__"`` in
+        :ref:`PyMemberDef <pymemberdef-offsets>`)
 
-         If it is not possible to switch to a ``MANAGED`` flag (for example,
-         for vectorcall or to support Python older than 3.12), specify the
-         offset in :c:member:`Py_tp_members <PyTypeObject.tp_members>`.
-         See :ref:`PyMemberDef documentation <pymemberdef-offsets>`
-         for details.
+      If it is not possible to switch to a ``MANAGED`` flag (for example,
+      for vectorcall or to support Python older than 3.12), specify the
+      offset in :c:member:`Py_tp_members <PyTypeObject.tp_members>`.
+      See :ref:`PyMemberDef documentation <pymemberdef-offsets>`
+      for details.
 
       The following fields cannot be set at all when creating a heap type:
 
@@ -510,14 +512,13 @@ The following functions and structs are used to create
       To avoid issues, use the *bases* argument of
       :c:func:`PyType_FromSpecWithBases` instead.
 
-     .. versionchanged:: 3.9
+      .. versionchanged:: 3.9
+         Slots in :c:type:`PyBufferProcs` may be set in the unlimited API.
 
-        Slots in :c:type:`PyBufferProcs` may be set in the unlimited API.
-
-     .. versionchanged:: 3.11
-        :c:member:`~PyBufferProcs.bf_getbuffer` and
-        :c:member:`~PyBufferProcs.bf_releasebuffer` are now available
-        under the :ref:`limited API <limited-c-api>`.
+      .. versionchanged:: 3.11
+         :c:member:`~PyBufferProcs.bf_getbuffer` and
+         :c:member:`~PyBufferProcs.bf_releasebuffer` are now available
+         under the :ref:`limited API <limited-c-api>`.
 
    .. c:member:: void *pfunc
 
diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index a6a2c437ea4e16..34dbc699fa1c20 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -355,7 +355,7 @@ slot typedefs
 +-----------------------------+-----------------------------+----------------------+
 | :c:type:`newfunc`           | .. line-block::             | :c:type:`PyObject` * |
 |                             |                             |                      |
-|                             |    :c:type:`PyObject` *     |                      |
+|                             |    :c:type:`PyTypeObject` * |                      |
 |                             |    :c:type:`PyObject` *     |                      |
 |                             |    :c:type:`PyObject` *     |                      |
 +-----------------------------+-----------------------------+----------------------+
@@ -567,12 +567,12 @@ and :c:data:`PyType_Type` effectively act as defaults.)
 
    For :ref:`statically allocated type objects <static-types>`,
    the *tp_name* field should contain a dot.
-   Everything before the last dot is made accessible as the :attr:`__module__`
+   Everything before the last dot is made accessible as the :attr:`~type.__module__`
    attribute, and everything after the last dot is made accessible as the
-   :attr:`~definition.__name__` attribute.
+   :attr:`~type.__name__` attribute.
 
    If no dot is present, the entire :c:member:`~PyTypeObject.tp_name` field is made accessible as the
-   :attr:`~definition.__name__` attribute, and the :attr:`__module__` attribute is undefined
+   :attr:`~type.__name__` attribute, and the :attr:`~type.__module__` attribute is undefined
    (unless explicitly set in the dictionary, as explained above).  This means your
    type will be impossible to pickle.  Additionally, it will not be listed in
    module documentations created with pydoc.
@@ -682,6 +682,19 @@ and :c:data:`PyType_Type` effectively act as defaults.)
          Py_DECREF(tp);
      }
 
+   .. warning::
+
+      In a garbage collected Python, :c:member:`!tp_dealloc` may be called from
+      any Python thread, not just the thread which created the object (if the
+      object becomes part of a refcount cycle, that cycle might be collected by
+      a garbage collection on any thread).  This is not a problem for Python
+      API calls, since the thread on which :c:member:`!tp_dealloc` is called
+      will own the Global Interpreter Lock (GIL).  However, if the object being
+      destroyed in turn destroys objects from some other C or C++ library, care
+      should be taken to ensure that destroying those objects on the thread
+      which called :c:member:`!tp_dealloc` will not violate any assumptions of
+      the library.
+
 
    **Inheritance:**
 
@@ -1131,7 +1144,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
 
    .. c:macro:: Py_TPFLAGS_MANAGED_DICT
 
-      This bit indicates that instances of the class have a ``__dict__``
+      This bit indicates that instances of the class have a `~object.__dict__`
       attribute, and that the space for the dictionary is managed by the VM.
 
       If this flag is set, :c:macro:`Py_TPFLAGS_HAVE_GC` should also be set.
@@ -1328,15 +1341,15 @@ and :c:data:`PyType_Type` effectively act as defaults.)
       To indicate that a class has changed call :c:func:`PyType_Modified`
 
       .. warning::
-         This flag is present in header files, but is an internal feature and should
-         not be used. It will be removed in a future version of CPython
+         This flag is present in header files, but is not be used.
+         It will be removed in a future version of CPython
 
 
 .. c:member:: const char* PyTypeObject.tp_doc
 
    An optional pointer to a NUL-terminated C string giving the docstring for this
-   type object.  This is exposed as the :attr:`__doc__` attribute on the type and
-   instances of the type.
+   type object.  This is exposed as the :attr:`~type.__doc__` attribute on the
+   type and instances of the type.
 
    **Inheritance:**
 
@@ -1592,7 +1605,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    weak references to the type object itself.
 
    It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
-   :c:member:`~PyTypeObject.tp_weaklist`.
+   :c:member:`~PyTypeObject.tp_weaklistoffset`.
 
    **Inheritance:**
 
@@ -1604,7 +1617,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    **Default:**
 
    If the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit is set in the
-   :c:member:`~PyTypeObject.tp_dict` field, then
+   :c:member:`~PyTypeObject.tp_flags` field, then
    :c:member:`~PyTypeObject.tp_weaklistoffset` will be set to a negative value,
    to indicate that it is unsafe to use this field.
 
@@ -2036,7 +2049,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    A collection of subclasses.  Internal use only.  May be an invalid pointer.
 
    To get a list of subclasses, call the Python method
-   :py:meth:`~class.__subclasses__`.
+   :py:meth:`~type.__subclasses__`.
 
    .. versionchanged:: 3.12
 
@@ -2109,17 +2122,6 @@ and :c:data:`PyType_Type` effectively act as defaults.)
           PyErr_Restore(error_type, error_value, error_traceback);
       }
 
-   Also, note that, in a garbage collected Python,
-   :c:member:`~PyTypeObject.tp_dealloc` may be called from
-   any Python thread, not just the thread which created the object (if the object
-   becomes part of a refcount cycle, that cycle might be collected by a garbage
-   collection on any thread).  This is not a problem for Python API calls, since
-   the thread on which tp_dealloc is called will own the Global Interpreter Lock
-   (GIL). However, if the object being destroyed in turn destroys objects from some
-   other C or C++ library, care should be taken to ensure that destroying those
-   objects on the thread which called tp_dealloc will not violate any assumptions
-   of the library.
-
    **Inheritance:**
 
    This field is inherited by subtypes.
@@ -2199,7 +2201,7 @@ This is done by filling a :c:type:`PyType_Spec` structure and calling
 .. _number-structs:
 
 Number Object Structures
-========================
+------------------------
 
 .. sectionauthor:: Amaury Forgeot d'Arc
 
@@ -2313,7 +2315,7 @@ Number Object Structures
 .. _mapping-structs:
 
 Mapping Object Structures
-=========================
+-------------------------
 
 .. sectionauthor:: Amaury Forgeot d'Arc
 
@@ -2350,7 +2352,7 @@ Mapping Object Structures
 .. _sequence-structs:
 
 Sequence Object Structures
-==========================
+--------------------------
 
 .. sectionauthor:: Amaury Forgeot d'Arc
 
@@ -2430,7 +2432,7 @@ Sequence Object Structures
 .. _buffer-structs:
 
 Buffer Object Structures
-========================
+------------------------
 
 .. sectionauthor:: Greg J. Stein <greg@lyra.org>
 .. sectionauthor:: Benjamin Peterson
@@ -2525,7 +2527,7 @@ Buffer Object Structures
 
 
 Async Object Structures
-=======================
+-----------------------
 
 .. sectionauthor:: Yury Selivanov <yselivanov@sprymix.com>
 
@@ -2593,7 +2595,7 @@ Async Object Structures
 .. _slot-typedefs:
 
 Slot Type typedefs
-==================
+------------------
 
 .. c:type:: PyObject *(*allocfunc)(PyTypeObject *cls, Py_ssize_t nitems)
 
@@ -2616,7 +2618,7 @@ Slot Type typedefs
 
    See :c:member:`~PyTypeObject.tp_free`.
 
-.. c:type:: PyObject *(*newfunc)(PyObject *, PyObject *, PyObject *)
+.. c:type:: PyObject *(*newfunc)(PyTypeObject *, PyObject *, PyObject *)
 
    See :c:member:`~PyTypeObject.tp_new`.
 
@@ -2702,7 +2704,7 @@ Slot Type typedefs
 .. _typedef-examples:
 
 Examples
-========
+--------
 
 The following are simple examples of Python type definitions.  They
 include common usage you may encounter.  Some demonstrate tricky corner
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 7320d035bab513..22e134c9f08ea8 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -317,7 +317,7 @@ These APIs can be used to work with surrogates:
 
 .. c:function:: Py_UCS4 Py_UNICODE_JOIN_SURROGATES(Py_UCS4 high, Py_UCS4 low)
 
-   Join two surrogate characters and return a single :c:type:`Py_UCS4` value.
+   Join two surrogate code points and return a single :c:type:`Py_UCS4` value.
    *high* and *low* are respectively the leading and trailing surrogates in a
    surrogate pair. *high* must be in the range [0xD800; 0xDBFF] and *low* must
    be in the range [0xDC00; 0xDFFF].
@@ -338,6 +338,8 @@ APIs:
    This is the recommended way to allocate a new Unicode object.  Objects
    created using this function are not resizable.
 
+   On error, set an exception and return ``NULL``.
+
    .. versionadded:: 3.3
 
 
@@ -614,6 +616,8 @@ APIs:
 
    Return the length of the Unicode object, in code points.
 
+   On error, set an exception and return ``-1``.
+
    .. versionadded:: 3.3
 
 
@@ -657,6 +661,8 @@ APIs:
    not out of bounds, and that the object can be modified safely (i.e. that it
    its reference count is one).
 
+   Return ``0`` on success, ``-1`` on error with an exception set.
+
    .. versionadded:: 3.3
 
 
@@ -666,6 +672,8 @@ APIs:
    Unicode object and the index is not out of bounds, in contrast to
    :c:func:`PyUnicode_READ_CHAR`, which performs no error checking.
 
+   Return character on success, ``-1`` on error with an exception set.
+
    .. versionadded:: 3.3
 
 
@@ -674,6 +682,7 @@ APIs:
 
    Return a substring of *unicode*, from character index *start* (included) to
    character index *end* (excluded).  Negative indices are not supported.
+   On error, set an exception and return ``NULL``.
 
    .. versionadded:: 3.3
 
@@ -777,16 +786,25 @@ Functions encoding to and decoding from the :term:`filesystem encoding and
 error handler` (:pep:`383` and :pep:`529`).
 
 To encode file names to :class:`bytes` during argument parsing, the ``"O&"``
-converter should be used, passing :c:func:`PyUnicode_FSConverter` as the
+converter should be used, passing :c:func:`!PyUnicode_FSConverter` as the
 conversion function:
 
 .. c:function:: int PyUnicode_FSConverter(PyObject* obj, void* result)
 
-   ParseTuple converter: encode :class:`str` objects -- obtained directly or
+   :ref:`PyArg_Parse\* converter <arg-parsing>`: encode :class:`str` objects -- obtained directly or
    through the :class:`os.PathLike` interface -- to :class:`bytes` using
    :c:func:`PyUnicode_EncodeFSDefault`; :class:`bytes` objects are output as-is.
-   *result* must be a :c:expr:`PyBytesObject*` which must be released when it is
-   no longer used.
+   *result* must be an address of a C variable of type :c:expr:`PyObject*`
+   (or :c:expr:`PyBytesObject*`).
+   On success, set the variable to a new :term:`strong reference` to
+   a :ref:`bytes object <bytesobjects>` which must be released
+   when it is no longer used and return a non-zero value
+   (:c:macro:`Py_CLEANUP_SUPPORTED`).
+   Embedded null bytes are not allowed in the result.
+   On failure, return ``0`` with an exception set.
+
+   If *obj* is ``NULL``, the function releases a strong reference
+   stored in the variable referred by *result* and returns ``1``.
 
    .. versionadded:: 3.1
 
@@ -794,16 +812,26 @@ conversion function:
       Accepts a :term:`path-like object`.
 
 To decode file names to :class:`str` during argument parsing, the ``"O&"``
-converter should be used, passing :c:func:`PyUnicode_FSDecoder` as the
+converter should be used, passing :c:func:`!PyUnicode_FSDecoder` as the
 conversion function:
 
 .. c:function:: int PyUnicode_FSDecoder(PyObject* obj, void* result)
 
-   ParseTuple converter: decode :class:`bytes` objects -- obtained either
+   :ref:`PyArg_Parse\* converter <arg-parsing>`: decode :class:`bytes` objects -- obtained either
    directly or indirectly through the :class:`os.PathLike` interface -- to
    :class:`str` using :c:func:`PyUnicode_DecodeFSDefaultAndSize`; :class:`str`
-   objects are output as-is. *result* must be a :c:expr:`PyUnicodeObject*` which
-   must be released when it is no longer used.
+   objects are output as-is.
+   *result* must be an address of a C variable of type :c:expr:`PyObject*`
+   (or :c:expr:`PyUnicodeObject*`).
+   On success, set the variable to a new :term:`strong reference` to
+   a :ref:`Unicode object <unicodeobjects>` which must be released
+   when it is no longer used and return a non-zero value
+   (:c:macro:`Py_CLEANUP_SUPPORTED`).
+   Embedded null characters are not allowed in the result.
+   On failure, return ``0`` with an exception set.
+
+   If *obj* is ``NULL``, release the strong reference
+   to the object referred to by *result* and return ``1``.
 
    .. versionadded:: 3.2
 
@@ -990,6 +1018,9 @@ These are the UTF-8 codec APIs:
    object.  Error handling is "strict".  Return ``NULL`` if an exception was
    raised by the codec.
 
+   The function fails if the string contains surrogate code points
+   (``U+D800`` - ``U+DFFF``).
+
 
 .. c:function:: const char* PyUnicode_AsUTF8AndSize(PyObject *unicode, Py_ssize_t *size)
 
@@ -1002,6 +1033,9 @@ These are the UTF-8 codec APIs:
    On error, set an exception, set *size* to ``-1`` (if it's not NULL) and
    return ``NULL``.
 
+   The function fails if the string contains surrogate code points
+   (``U+D800`` - ``U+DFFF``).
+
    This caches the UTF-8 representation of the string in the Unicode object, and
    subsequent calls will return a pointer to the same buffer.  The caller is not
    responsible for deallocating the buffer. The buffer is deallocated and
@@ -1020,6 +1054,15 @@ These are the UTF-8 codec APIs:
 
    As :c:func:`PyUnicode_AsUTF8AndSize`, but does not store the size.
 
+   .. warning::
+
+      This function does not have any special behavior for
+      `null characters <https://en.wikipedia.org/wiki/Null_character>`_ embedded within
+      *unicode*. As a result, strings containing null characters will remain in the returned
+      string, which some C functions might interpret as the end of the string, leading to
+      truncation. If truncation is an issue, it is recommended to use :c:func:`PyUnicode_AsUTF8AndSize`
+      instead.
+
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.7
@@ -1429,8 +1472,9 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    Compare a Unicode object with a char buffer which is interpreted as
    being UTF-8 or ASCII encoded and return true (``1``) if they are equal,
    or false (``0``) otherwise.
-   If the Unicode object contains surrogate characters or
-   the C string is not valid UTF-8, false (``0``) is returned.
+   If the Unicode object contains surrogate code points
+   (``U+D800`` - ``U+DFFF``) or the C string is not valid UTF-8,
+   false (``0``) is returned.
 
    This function does not raise exceptions.
 
@@ -1490,15 +1534,41 @@ They all return ``NULL`` or ``-1`` if an exception occurs.
    existing interned string that is the same as :c:expr:`*p_unicode`, it sets :c:expr:`*p_unicode` to
    it (releasing the reference to the old string object and creating a new
    :term:`strong reference` to the interned string object), otherwise it leaves
-   :c:expr:`*p_unicode` alone and interns it (creating a new :term:`strong reference`).
+   :c:expr:`*p_unicode` alone and interns it.
+
    (Clarification: even though there is a lot of talk about references, think
-   of this function as reference-neutral; you own the object after the call
-   if and only if you owned it before the call.)
+   of this function as reference-neutral. You must own the object you pass in;
+   after the call you no longer own the passed-in reference, but you newly own
+   the result.)
+
+   This function never raises an exception.
+   On error, it leaves its argument unchanged without interning it.
+
+   Instances of subclasses of :py:class:`str` may not be interned, that is,
+   :c:expr:`PyUnicode_CheckExact(*p_unicode)` must be true. If it is not,
+   then -- as with any other error -- the argument is left unchanged.
+
+   Note that interned strings are not “immortal”.
+   You must keep a reference to the result to benefit from interning.
 
 
 .. c:function:: PyObject* PyUnicode_InternFromString(const char *str)
 
    A combination of :c:func:`PyUnicode_FromString` and
-   :c:func:`PyUnicode_InternInPlace`, returning either a new Unicode string
-   object that has been interned, or a new ("owned") reference to an earlier
-   interned string object with the same value.
+   :c:func:`PyUnicode_InternInPlace`, meant for statically allocated strings.
+
+   Return a new ("owned") reference to either a new Unicode string object
+   that has been interned, or an earlier interned string object with the
+   same value.
+
+   Python may keep a reference to the result, or make it :term:`immortal`,
+   preventing it from being garbage-collected promptly.
+   For interning an unbounded number of different strings, such as ones coming
+   from user input, prefer calling :c:func:`PyUnicode_FromString` and
+   :c:func:`PyUnicode_InternInPlace` directly.
+
+   .. impl-detail::
+
+      Strings interned this way are made :term:`immortal`.
+
+
diff --git a/Doc/c-api/veryhigh.rst b/Doc/c-api/veryhigh.rst
index 67167444d0a685..1ef4181d52eb10 100644
--- a/Doc/c-api/veryhigh.rst
+++ b/Doc/c-api/veryhigh.rst
@@ -25,30 +25,6 @@ are only passed to these functions if it is certain that they were created by
 the same library that the Python runtime is using.
 
 
-.. c:function:: int Py_Main(int argc, wchar_t **argv)
-
-   The main program for the standard interpreter.  This is made available for
-   programs which embed Python.  The *argc* and *argv* parameters should be
-   prepared exactly as those which are passed to a C program's :c:func:`main`
-   function (converted to wchar_t according to the user's locale).  It is
-   important to note that the argument list may be modified (but the contents of
-   the strings pointed to by the argument list are not). The return value will
-   be ``0`` if the interpreter exits normally (i.e., without an exception),
-   ``1`` if the interpreter exits due to an exception, or ``2`` if the parameter
-   list does not represent a valid Python command line.
-
-   Note that if an otherwise unhandled :exc:`SystemExit` is raised, this
-   function will not return ``1``, but exit the process, as long as
-   :c:member:`PyConfig.inspect` is zero.
-
-
-.. c:function:: int Py_BytesMain(int argc, char **argv)
-
-   Similar to :c:func:`Py_Main` but *argv* is an array of bytes strings.
-
-   .. versionadded:: 3.8
-
-
 .. c:function:: int PyRun_AnyFile(FILE *fp, const char *filename)
 
    This is a simplified interface to :c:func:`PyRun_AnyFileExFlags` below, leaving
@@ -372,8 +348,20 @@ the same library that the Python runtime is using.
    .. versionchanged:: 3.8
       Added *cf_feature_version* field.
 
+   The available compiler flags are accessible as macros:
+
+   .. c:namespace:: NULL
+
+   .. c:macro:: PyCF_ALLOW_TOP_LEVEL_AWAIT
+                PyCF_ONLY_AST
+                PyCF_OPTIMIZED_AST
+                PyCF_TYPE_COMMENTS
+
+      See :ref:`compiler flags <ast-compiler-flags>` in documentation of the
+      :py:mod:`!ast` Python module, which exports these constants under
+      the same names.
 
-.. c:var:: int CO_FUTURE_DIVISION
+   .. c:var:: int CO_FUTURE_DIVISION
 
-   This bit can be set in *flags* to cause division operator ``/`` to be
-   interpreted as "true division" according to :pep:`238`.
+      This bit can be set in *flags* to cause division operator ``/`` to be
+      interpreted as "true division" according to :pep:`238`.
diff --git a/Doc/c-api/weakref.rst b/Doc/c-api/weakref.rst
index 038f54a9751fd1..8f233e16fb17cf 100644
--- a/Doc/c-api/weakref.rst
+++ b/Doc/c-api/weakref.rst
@@ -35,7 +35,7 @@ as much as it can.
    callable object that receives notification when *ob* is garbage collected; it
    should accept a single parameter, which will be the weak reference object
    itself. *callback* may also be ``None`` or ``NULL``.  If *ob* is not a
-   weakly referencable object, or if *callback* is not callable, ``None``, or
+   weakly referenceable object, or if *callback* is not callable, ``None``, or
    ``NULL``, this will return ``NULL`` and raise :exc:`TypeError`.
 
 
@@ -47,7 +47,7 @@ as much as it can.
    be a callable object that receives notification when *ob* is garbage
    collected; it should accept a single parameter, which will be the weak
    reference object itself. *callback* may also be ``None`` or ``NULL``.  If *ob*
-   is not a weakly referencable object, or if *callback* is not callable,
+   is not a weakly referenceable object, or if *callback* is not callable,
    ``None``, or ``NULL``, this will return ``NULL`` and raise :exc:`TypeError`.
 
 
@@ -96,3 +96,19 @@ as much as it can.
    This iterates through the weak references for *object* and calls callbacks
    for those references which have one. It returns when all callbacks have
    been attempted.
+
+
+.. c:function:: void PyUnstable_Object_ClearWeakRefsNoCallbacks(PyObject *object)
+
+   Clears the weakrefs for *object* without calling the callbacks.
+
+   This function is called by the :c:member:`~PyTypeObject.tp_dealloc` handler
+   for types with finalizers (i.e., :meth:`~object.__del__`).  The handler for
+   those objects first calls :c:func:`PyObject_ClearWeakRefs` to clear weakrefs
+   and call their callbacks, then the finalizer, and finally this function to
+   clear any weakrefs that may have been created by the finalizer.
+
+   In most circumstances, it's more appropriate to use
+   :c:func:`PyObject_ClearWeakRefs` to clear weakrefs instead of this function.
+
+   .. versionadded:: 3.13
diff --git a/Doc/conf.py b/Doc/conf.py
index 86371d17ae742a..a156ea2e57a6a5 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -6,23 +6,28 @@
 # The contents of this file are pickled, so don't put values in the namespace
 # that aren't pickleable (module imports are okay, they're removed automatically).
 
+import importlib
 import os
 import sys
-import time
+
+# Make our custom extensions available to Sphinx
 sys.path.append(os.path.abspath('tools/extensions'))
 sys.path.append(os.path.abspath('includes'))
 
+# Python specific content from Doc/Tools/extensions/pyspecific.py
 from pyspecific import SOURCE_URI
 
 # General configuration
 # ---------------------
 
+# Our custom Sphinx extensions are found in Doc/Tools/extensions/
 extensions = [
-    'asdl_highlight',
+    'audit_events',
+    'availability',
     'c_annotations',
-    'escape4chm',
+    'changes',
     'glossary_search',
-    'peg_highlight',
+    'lexers',
     'pyspecific',
     'sphinx.ext.coverage',
     'sphinx.ext.doctest',
@@ -31,13 +36,13 @@
 
 # Skip if downstream redistributors haven't installed them
 try:
-    import notfound.extension
+    import notfound.extension  # noqa: F401
 except ImportError:
     pass
 else:
     extensions.append('notfound.extension')
 try:
-    import sphinxext.opengraph
+    import sphinxext.opengraph  # noqa: F401
 except ImportError:
     pass
 else:
@@ -50,7 +55,7 @@
 except ImportError:
     _tkinter = None
 # Treat warnings as errors, done here to prevent warnings in Sphinx code from
-# causing spurious test failures.
+# causing spurious CPython test failures.
 import warnings
 warnings.simplefilter('error')
 del warnings
@@ -60,12 +65,12 @@
 
 # General substitutions.
 project = 'Python'
-copyright = f"2001-{time.strftime('%Y')}, Python Software Foundation"
+copyright = "2001-%Y, Python Software Foundation"
 
 # We look for the Include/patchlevel.h file in the current Python source tree
 # and replace the values accordingly.
-import patchlevel
-version, release = patchlevel.get_version_info()
+# See Doc/tools/extensions/patchlevel.py
+version, release = importlib.import_module('patchlevel').get_version_info()
 
 rst_epilog = f"""
 .. |python_version_literal| replace:: ``Python {version}``
@@ -73,24 +78,25 @@
 .. |usr_local_bin_python_x_dot_y_literal| replace:: ``/usr/local/bin/python{version}``
 """
 
-# There are two options for replacing |today|: either, you set today to some
-# non-false value, then it is used:
+# There are two options for replacing |today|. Either, you set today to some
+# non-false value and use it.
 today = ''
-# Else, today_fmt is used as the format for a strftime call.
+# Or else, today_fmt is used as the format for a strftime call.
 today_fmt = '%B %d, %Y'
 
 # By default, highlight as Python 3.
 highlight_language = 'python3'
 
 # Minimum version of sphinx required
-needs_sphinx = '4.2'
+# Keep this version in sync with ``Doc/requirements.txt``.
+needs_sphinx = '8.1.3'
 
 # Create table of contents entries for domain objects (e.g. functions, classes,
 # attributes, etc.). Default is True.
 toc_object_entries = False
 
 # Ignore any .rst files in the includes/ directory;
-# they're embedded in pages but not rendered individually.
+# they're embedded in pages but not rendered as individual pages.
 # Ignore any .rst files in the venv/ directory.
 exclude_patterns = ['includes/*.rst', 'venv/*', 'README.rst']
 venvdir = os.getenv('VENVDIR')
@@ -131,6 +137,8 @@
     ('c:func', 'vsnprintf'),
     # Standard C types
     ('c:type', 'FILE'),
+    ('c:type', 'int8_t'),
+    ('c:type', 'int16_t'),
     ('c:type', 'int32_t'),
     ('c:type', 'int64_t'),
     ('c:type', 'intmax_t'),
@@ -140,6 +148,9 @@
     ('c:type', 'size_t'),
     ('c:type', 'ssize_t'),
     ('c:type', 'time_t'),
+    ('c:type', 'uint8_t'),
+    ('c:type', 'uint16_t'),
+    ('c:type', 'uint32_t'),
     ('c:type', 'uint64_t'),
     ('c:type', 'uintmax_t'),
     ('c:type', 'uintptr_t'),
@@ -182,6 +193,7 @@
     ('envvar', 'LC_TIME'),
     ('envvar', 'LINES'),
     ('envvar', 'LOGNAME'),
+    ('envvar', 'MANPAGER'),
     ('envvar', 'PAGER'),
     ('envvar', 'PATH'),
     ('envvar', 'PATHEXT'),
@@ -242,6 +254,7 @@
     ('c:data', 'PyExc_OverflowError'),
     ('c:data', 'PyExc_PermissionError'),
     ('c:data', 'PyExc_ProcessLookupError'),
+    ('c:data', 'PyExc_PythonFinalizationError'),
     ('c:data', 'PyExc_RecursionError'),
     ('c:data', 'PyExc_ReferenceError'),
     ('c:data', 'PyExc_RuntimeError'),
@@ -272,6 +285,9 @@
     ('c:data', 'PyExc_UnicodeWarning'),
     ('c:data', 'PyExc_UserWarning'),
     ('c:data', 'PyExc_Warning'),
+    # Undocumented public C macros
+    ('c:macro', 'Py_BUILD_ASSERT'),
+    ('c:macro', 'Py_BUILD_ASSERT_EXPR'),
     # Do not error nit-picky mode builds when _SubParsersAction.add_parser cannot
     # be resolved, as the method is currently undocumented. For context, see
     # https://github.com/python/cpython/pull/103289.
@@ -296,7 +312,8 @@
 
 # Disable Docutils smartquotes for several translations
 smartquotes_excludes = {
-    'languages': ['ja', 'fr', 'zh_TW', 'zh_CN'], 'builders': ['man', 'text'],
+    'languages': ['ja', 'fr', 'zh_TW', 'zh_CN'],
+    'builders': ['man', 'text'],
 }
 
 # Avoid a warning with Sphinx >= 4.0
@@ -305,23 +322,27 @@
 # Allow translation of index directives
 gettext_additional_targets = [
     'index',
+    'literal-block',
 ]
 
 # Options for HTML output
 # -----------------------
 
-# Use our custom theme.
+# Use our custom theme: https://github.com/python/python-docs-theme
 html_theme = 'python_docs_theme'
+# Location of overrides for theme templates and static files
 html_theme_path = ['tools']
 html_theme_options = {
     'collapsiblesidebar': True,
     'issues_url': '/bugs.html',
     'license_url': '/license.html',
-    'root_include_title': False   # We use the version switcher instead.
+    'root_include_title': False,  # We use the version switcher instead.
 }
 
 if os.getenv("READTHEDOCS"):
-    html_theme_options["hosted_on"] = '<a href="https://about.readthedocs.com/">Read the Docs</a>'
+    html_theme_options["hosted_on"] = (
+        '<a href="https://about.readthedocs.com/">Read the Docs</a>'
+    )
 
 # Override stylesheet fingerprinting for Windows CHM htmlhelp to fix GH-91207
 # https://github.com/python/cpython/issues/91207
@@ -335,17 +356,21 @@
 
 # Deployment preview information
 # (See .readthedocs.yml and https://docs.readthedocs.io/en/stable/reference/environment-variables.html)
-repository_url = os.getenv("READTHEDOCS_GIT_CLONE_URL")
+is_deployment_preview = os.getenv("READTHEDOCS_VERSION_TYPE") == "external"
+repository_url = os.getenv("READTHEDOCS_GIT_CLONE_URL", "")
+repository_url = repository_url.removesuffix(".git")
 html_context = {
-    "is_deployment_preview": os.getenv("READTHEDOCS_VERSION_TYPE") == "external",
-    "repository_url": repository_url.removesuffix(".git") if repository_url else None,
-    "pr_id": os.getenv("READTHEDOCS_VERSION")
+    "is_deployment_preview": is_deployment_preview,
+    "repository_url": repository_url or None,
+    "pr_id": os.getenv("READTHEDOCS_VERSION"),
+    "enable_analytics": os.getenv("PYTHON_DOCS_ENABLE_ANALYTICS"),
 }
 
 # This 'Last updated on:' timestamp is inserted at the bottom of every page.
-html_last_updated_fmt = time.strftime('%b %d, %Y (%H:%M UTC)', time.gmtime())
+html_last_updated_fmt = '%b %d, %Y (%H:%M UTC)'
+html_last_updated_use_utc = True
 
-# Path to find HTML templates.
+# Path to find HTML templates to override theme
 templates_path = ['tools/templates']
 
 # Custom sidebar templates, filenames relative to this file.
@@ -374,6 +399,8 @@
 # Split the index
 html_split_index = True
 
+# Split pot files one per reST file
+gettext_compact = False
 
 # Options for LaTeX output
 # ------------------------
@@ -391,8 +418,8 @@
 \let\endVerbatim=\endOriginalVerbatim
 \setcounter{tocdepth}{2}
 ''',
-    # The paper size ('letter' or 'a4').
-    'papersize': 'a4',
+    # The paper size ('letterpaper' or 'a4paper').
+    'papersize': 'a4paper',
     # The font size ('10pt', '11pt' or '12pt').
     'pointsize': '10pt',
 }
@@ -401,30 +428,70 @@
 # (source start file, target name, title, author, document class [howto/manual]).
 _stdauthor = 'Guido van Rossum and the Python development team'
 latex_documents = [
-    ('c-api/index', 'c-api.tex',
-     'The Python/C API', _stdauthor, 'manual'),
-    ('extending/index', 'extending.tex',
-     'Extending and Embedding Python', _stdauthor, 'manual'),
-    ('installing/index', 'installing.tex',
-     'Installing Python Modules', _stdauthor, 'manual'),
-    ('library/index', 'library.tex',
-     'The Python Library Reference', _stdauthor, 'manual'),
-    ('reference/index', 'reference.tex',
-     'The Python Language Reference', _stdauthor, 'manual'),
-    ('tutorial/index', 'tutorial.tex',
-     'Python Tutorial', _stdauthor, 'manual'),
-    ('using/index', 'using.tex',
-     'Python Setup and Usage', _stdauthor, 'manual'),
-    ('faq/index', 'faq.tex',
-     'Python Frequently Asked Questions', _stdauthor, 'manual'),
-    ('whatsnew/' + version, 'whatsnew.tex',
-     'What\'s New in Python', 'A. M. Kuchling', 'howto'),
+    ('c-api/index', 'c-api.tex', 'The Python/C API', _stdauthor, 'manual'),
+    (
+        'extending/index',
+        'extending.tex',
+        'Extending and Embedding Python',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'installing/index',
+        'installing.tex',
+        'Installing Python Modules',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'library/index',
+        'library.tex',
+        'The Python Library Reference',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'reference/index',
+        'reference.tex',
+        'The Python Language Reference',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'tutorial/index',
+        'tutorial.tex',
+        'Python Tutorial',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'using/index',
+        'using.tex',
+        'Python Setup and Usage',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'faq/index',
+        'faq.tex',
+        'Python Frequently Asked Questions',
+        _stdauthor,
+        'manual',
+    ),
+    (
+        'whatsnew/' + version,
+        'whatsnew.tex',
+        'What\'s New in Python',
+        'A. M. Kuchling',
+        'howto',
+    ),
 ]
 # Collect all HOWTOs individually
-latex_documents.extend(('howto/' + fn[:-4], 'howto-' + fn[:-4] + '.tex',
-                        '', _stdauthor, 'howto')
-                       for fn in os.listdir('howto')
-                       if fn.endswith('.rst') and fn != 'index.rst')
+latex_documents.extend(
+    ('howto/' + fn[:-4], 'howto-' + fn[:-4] + '.tex', '', _stdauthor, 'howto')
+    for fn in os.listdir('howto')
+    if fn.endswith('.rst') and fn != 'index.rst'
+)
 
 # Documents to append as an appendix to all manuals.
 latex_appendices = ['glossary', 'about', 'license', 'copyright']
@@ -435,6 +502,10 @@
 epub_author = 'Python Documentation Authors'
 epub_publisher = 'Python Software Foundation'
 
+# index pages are not valid xhtml
+# https://github.com/sphinx-doc/sphinx/issues/12359
+epub_use_index = False
+
 # Options for the coverage checker
 # --------------------------------
 
@@ -448,8 +519,7 @@
     'test($|_)',
 ]
 
-coverage_ignore_classes = [
-]
+coverage_ignore_classes = []
 
 # Glob patterns for C source files for C API coverage, relative to this directory.
 coverage_c_path = [
@@ -466,7 +536,7 @@
 # The coverage checker will ignore all C items whose names match these regexes
 # (using re.match) -- the keys must be the same as in coverage_c_regexes.
 coverage_ignore_c_items = {
-#    'cfunction': [...]
+    # 'cfunction': [...]
 }
 
 
@@ -482,15 +552,19 @@
     r'https://github.com/python/cpython/tree/.*': 'https://github.com/python/cpython/blob/.*',
     # Intentional HTTP use at Misc/NEWS.d/3.5.0a1.rst
     r'http://www.python.org/$': 'https://www.python.org/$',
-    # Used in license page, keep as is
-    r'https://www.zope.org/': r'https://www.zope.dev/',
     # Microsoft's redirects to learn.microsoft.com
     r'https://msdn.microsoft.com/.*': 'https://learn.microsoft.com/.*',
     r'https://docs.microsoft.com/.*': 'https://learn.microsoft.com/.*',
     r'https://go.microsoft.com/fwlink/\?LinkID=\d+': 'https://learn.microsoft.com/.*',
+    # Debian's man page redirects to its current stable version
+    r'https://manpages.debian.org/\w+\(\d(\w+)?\)': r'https://manpages.debian.org/\w+/[\w/\-\.]*\.\d(\w+)?\.en\.html',
     # Language redirects
     r'https://toml.io': 'https://toml.io/en/',
     r'https://www.redhat.com': 'https://www.redhat.com/en',
+    # pypi.org project name normalization (upper to lowercase, underscore to hyphen)
+    r'https://pypi.org/project/[A-Za-z\d_\-\.]+/': r'https://pypi.org/project/[a-z\d\-\.]+/',
+    # Discourse title name expansion (text changes when title is edited)
+    r'https://discuss\.python\.org/t/\d+': r'https://discuss\.python\.org/t/.*/\d+',
     # Other redirects
     r'https://www.boost.org/libs/.+': r'https://www.boost.org/doc/libs/\d_\d+_\d/.+',
     r'https://support.microsoft.com/en-us/help/\d+': 'https://support.microsoft.com/en-us/topic/.+',
@@ -524,21 +598,21 @@
 # mapping unique short aliases to a base URL and a prefix.
 # https://www.sphinx-doc.org/en/master/usage/extensions/extlinks.html
 extlinks = {
-    "cve": ("https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-%s", "CVE-%s"),
-    "cwe": ("https://cwe.mitre.org/data/definitions/%s.html", "CWE-%s"),
     "pypi": ("https://pypi.org/project/%s/", "%s"),
     "source": (SOURCE_URI, "%s"),
 }
 extlinks_detect_hardcoded_links = True
 
-# Options for extensions
-# ----------------------
+# Options for c_annotations extension
+# -----------------------------------
 
 # Relative filename of the data files
 refcount_file = 'data/refcounts.dat'
 stable_abi_file = 'data/stable_abi.dat'
 
-# sphinxext-opengraph config
+# Options for sphinxext-opengraph
+# -------------------------------
+
 ogp_site_url = 'https://docs.python.org/3/'
 ogp_site_name = 'Python documentation'
 ogp_image = '_static/og-image.png'
diff --git a/Doc/constraints.txt b/Doc/constraints.txt
index 147de1271eb2b7..29cd4be1d3c8db 100644
--- a/Doc/constraints.txt
+++ b/Doc/constraints.txt
@@ -7,18 +7,18 @@
 # Direct dependencies of Sphinx
 babel<3
 colorama<0.5
-imagesize<1.5
-Jinja2<3.2
-packaging<24
-Pygments>=2.16.1,<3
+imagesize<2
+Jinja2<4
+packaging<25
+Pygments<3
 requests<3
 snowballstemmer<3
-sphinxcontrib-applehelp<1.1
-sphinxcontrib-devhelp<1.1
-sphinxcontrib-htmlhelp<2.1
-sphinxcontrib-jsmath<1.1
-sphinxcontrib-qthelp<1.1
-sphinxcontrib-serializinghtml<1.2
+sphinxcontrib-applehelp<3
+sphinxcontrib-devhelp<3
+sphinxcontrib-htmlhelp<3
+sphinxcontrib-jsmath<2
+sphinxcontrib-qthelp<3
+sphinxcontrib-serializinghtml<3
 
 # Direct dependencies of Jinja2 (Jinja is a dependency of Sphinx, see above)
-MarkupSafe<2.2
+MarkupSafe<3
diff --git a/Doc/contents.rst b/Doc/contents.rst
index 24ceacb0076b5e..b57f4b09a5dcb6 100644
--- a/Doc/contents.rst
+++ b/Doc/contents.rst
@@ -14,6 +14,7 @@
    installing/index.rst
    howto/index.rst
    faq/index.rst
+   deprecations/index.rst
    glossary.rst
 
    about.rst
diff --git a/Doc/data/python3.13.abi b/Doc/data/python3.13.abi
new file mode 100644
index 00000000000000..617006a6489605
--- /dev/null
+++ b/Doc/data/python3.13.abi
@@ -0,0 +1,29418 @@
+<abi-corpus version='2.0' path='libpython3.13.so' soname='libpython3.13.so.1.0'>
+  <elf-needed>
+    <dependency name='libm.so.6'/>
+    <dependency name='libc.so.6'/>
+    <dependency name='ld-linux-x86-64.so.2'/>
+  </elf-needed>
+  <elf-function-symbols>
+    <elf-symbol name='PyAIter_Check' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_Parse' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_ParseTuple' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_ParseTupleAndKeywords' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_UnpackTuple' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_VaParse' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_VaParseTupleAndKeywords' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyArg_ValidateKeywordArguments' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyAsyncGen_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBool_FromLong' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_FillContiguousStrides' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_FillInfo' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_FromContiguous' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_GetPointer' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_IsContiguous' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_Release' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_SizeFromFormat' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBuffer_ToContiguous' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_AsString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_Concat' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_FromObject' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_FromStringAndSize' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_Resize' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyByteArray_Size' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_AsString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_AsStringAndSize' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_Concat' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_ConcatAndDel' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_DecodeEscape' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_FromFormat' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_FromFormatV' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_FromObject' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_FromString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_FromStringAndSize' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_Repr' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyBytes_Size' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_Call' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_GetFlags' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_GetFunction' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_GetSelf' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCFunction_NewEx' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCMethod_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCallIter_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCallable_Check' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_GetContext' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_GetDestructor' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_GetName' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_GetPointer' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_Import' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_IsValid' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_SetContext' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_SetDestructor' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_SetName' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCapsule_SetPointer' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCell_Get' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCell_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCell_Set' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyClassMethod_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_AddWatcher' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_Addr2Line' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_Addr2Location' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_ClearWatcher' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_GetCellvars' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_GetCode' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_GetFreevars' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_GetVarnames' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_NewEmpty' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCode_Optimize' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_BackslashReplaceErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Decode' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Decoder' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Encode' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Encoder' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_IgnoreErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_IncrementalDecoder' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_IncrementalEncoder' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_KnownEncoding' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_LookupError' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_NameReplaceErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Register' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_RegisterError' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_ReplaceErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_StreamReader' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_StreamWriter' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_StrictErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_Unregister' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCodec_XMLCharRefReplaceErrors' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCompile_OpcodeStackEffect' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCompile_OpcodeStackEffectWithJump' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyComplex_AsCComplex' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyComplex_FromCComplex' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyComplex_FromDoubles' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyComplex_ImagAsDouble' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyComplex_RealAsDouble' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_Clear' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_InitIsolatedConfig' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_InitPythonConfig' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_Read' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_SetArgv' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_SetBytesArgv' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_SetBytesString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_SetString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyConfig_SetWideStringList' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContextVar_Get' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContextVar_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContextVar_Reset' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContextVar_Set' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContext_Copy' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContext_CopyCurrent' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContext_Enter' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContext_Exit' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyContext_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCoro_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCriticalSection2_Begin' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCriticalSection2_End' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCriticalSection_Begin' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyCriticalSection_End' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_IsData' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_NewClassMethod' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_NewGetSet' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_NewMember' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_NewMethod' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDescr_NewWrapper' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDictProxy_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_AddWatcher' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Clear' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_ClearWatcher' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Contains' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_ContainsString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Copy' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_DelItem' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_DelItemString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_GetItem' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_GetItemRef' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_GetItemString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_GetItemStringRef' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_GetItemWithError' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Items' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Keys' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Merge' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_MergeFromSeq2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_New' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Next' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Pop' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_PopString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_SetDefault' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_SetDefaultRef' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_SetItem' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_SetItemString' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Size' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='PyDict_Unwatch' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
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+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_set_blocking' filepath='./Include/internal/pycore_fileutils.h' line='189' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_normpath_and_size' filepath='./Include/internal/pycore_fileutils.h' line='282' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-58'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-8'/>
+      <return type-id='type-id-58'/>
+    </function-decl>
+    <function-decl name='_Py_skiproot' filepath='./Include/internal/pycore_fileutils.h' line='293' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-18'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-8'/>
+      <parameter type-id='type-id-8'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_Py_GetTicksPerSecond' filepath='./Include/internal/pycore_fileutils.h' line='326' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-170'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyImport_AcquireLock' filepath='./Include/internal/pycore_import.h' line='22' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyImport_ReleaseLock' filepath='./Include/internal/pycore_import.h' line='23' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyImport_ReInitLock' filepath='./Include/internal/pycore_import.h' line='24' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyOS_URandom' filepath='./Include/internal/pycore_pylifecycle.h' line='102' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-7'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_ReinitRunningMain' filepath='./Include/internal/pycore_pystate.h' line='90' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_DeleteExceptMain' filepath='./Include/internal/pycore_pystate.h' line='250' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-171'/>
+      <return type-id='type-id-61'/>
+    </function-decl>
+    <function-decl name='_PySignal_AfterFork' filepath='./Include/internal/pycore_pystate.h' line='251' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyRuntimeState_ReInitThreads' filepath='./Include/internal/pycore_runtime.h' line='373' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-171'/>
+      <return type-id='type-id-61'/>
+    </function-decl>
+    <function-decl name='_PyTime_FromSecondsDouble' filepath='./Include/internal/pycore_time.h' line='135' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <parameter type-id='type-id-173'/>
+      <parameter type-id='type-id-174'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTime_FromTimespec' filepath='./Include/internal/pycore_time.h' line='226' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-174'/>
+      <parameter type-id='type-id-175'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyType_AddMethod' filepath='./Include/internal/pycore_typeobject.h' line='233' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1'/>
+      <parameter type-id='type-id-176'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyOS_BeforeFork' mangled-name='PyOS_BeforeFork' filepath='./Modules/posixmodule.c' line='619' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_BeforeFork'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyOS_AfterFork_Parent' mangled-name='PyOS_AfterFork_Parent' filepath='./Modules/posixmodule.c' line='630' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_AfterFork_Parent'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyOS_AfterFork_Child' mangled-name='PyOS_AfterFork_Child' filepath='./Modules/posixmodule.c' line='641' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_AfterFork_Child'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyOS_AfterFork' mangled-name='PyOS_AfterFork' filepath='./Modules/posixmodule.c' line='721' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_AfterFork'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyLong_FromGid' mangled-name='_PyLong_FromGid' filepath='./Modules/posixmodule.c' line='750' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyLong_FromGid'>
+      <parameter type-id='type-id-113' name='gid' filepath='./Modules/posixmodule.c' line='750' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_Py_Uid_Converter' mangled-name='_Py_Uid_Converter' filepath='./Modules/posixmodule.c' line='758' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_Uid_Converter'>
+      <parameter type-id='type-id-4' name='obj' filepath='./Modules/posixmodule.c' line='758' column='1'/>
+      <parameter type-id='type-id-168' name='p' filepath='./Modules/posixmodule.c' line='758' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_Gid_Converter' mangled-name='_Py_Gid_Converter' filepath='./Modules/posixmodule.c' line='864' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_Gid_Converter'>
+      <parameter type-id='type-id-4' name='obj' filepath='./Modules/posixmodule.c' line='864' column='1'/>
+      <parameter type-id='type-id-156' name='p' filepath='./Modules/posixmodule.c' line='864' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='opendir' filepath='/usr/include/dirent.h' line='134' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-123'/>
+    </function-decl>
+    <function-decl name='fdopendir' filepath='/usr/include/dirent.h' line='141' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-123'/>
+    </function-decl>
+    <function-decl name='closedir' filepath='/usr/include/dirent.h' line='149' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-123'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='rewinddir' filepath='/usr/include/dirent.h' line='209' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-123'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='setgroups' filepath='/usr/include/grp.h' line='176' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-130'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getgrouplist' filepath='/usr/include/grp.h' line='186' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-112'/>
+      <parameter type-id='type-id-124'/>
+      <parameter type-id='type-id-177'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='initgroups' filepath='/usr/include/grp.h' line='197' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='openpty' filepath='/usr/include/pty.h' line='36' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-17'/>
+      <parameter type-id='type-id-150'/>
+      <parameter type-id='type-id-152'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='forkpty' filepath='/usr/include/pty.h' line='42' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-17'/>
+      <parameter type-id='type-id-150'/>
+      <parameter type-id='type-id-152'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_setparam' filepath='/usr/include/sched.h' line='54' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-144'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_getparam' filepath='/usr/include/sched.h' line='58' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-164'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_setscheduler' filepath='/usr/include/sched.h' line='61' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-144'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_getscheduler' filepath='/usr/include/sched.h' line='65' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_get_priority_max' filepath='/usr/include/sched.h' line='71' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_get_priority_min' filepath='/usr/include/sched.h' line='74' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_rr_get_interval' filepath='/usr/include/sched.h' line='78' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-178'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_setaffinity' filepath='/usr/include/sched.h' line='130' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-132'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sched_getaffinity' filepath='/usr/include/sched.h' line='134' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-153'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='killpg' filepath='/usr/include/signal.h' line='119' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sigaddset' filepath='/usr/include/signal.h' line='205' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-52'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn' filepath='/usr/include/spawn.h' line='72' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-159'/>
+      <parameter type-id='type-id-179'/>
+      <parameter type-id='type-id-139'/>
+      <parameter type-id='type-id-142'/>
+      <parameter type-id='type-id-128'/>
+      <parameter type-id='type-id-128'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnp' filepath='/usr/include/spawn.h' line='85' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-158'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-138'/>
+      <parameter type-id='type-id-141'/>
+      <parameter type-id='type-id-127'/>
+      <parameter type-id='type-id-127'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_init' filepath='/usr/include/spawn.h' line='93' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-162'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_destroy' filepath='/usr/include/spawn.h' line='97' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-162'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setsigdefault' filepath='/usr/include/spawn.h' line='108' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-163'/>
+      <parameter type-id='type-id-148'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setsigmask' filepath='/usr/include/spawn.h' line='120' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-163'/>
+      <parameter type-id='type-id-148'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setflags' filepath='/usr/include/spawn.h' line='131' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-162'/>
+      <parameter type-id='type-id-78'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setpgroup' filepath='/usr/include/spawn.h' line='141' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-162'/>
+      <parameter type-id='type-id-79'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setschedpolicy' filepath='/usr/include/spawn.h' line='152' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-162'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawnattr_setschedparam' filepath='/usr/include/spawn.h' line='164' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-163'/>
+      <parameter type-id='type-id-145'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_init' filepath='/usr/include/spawn.h' line='170' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-160'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_destroy' filepath='/usr/include/spawn.h' line='175' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-160'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_addopen' filepath='/usr/include/spawn.h' line='181' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-161'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-179'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-115'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_addclose' filepath='/usr/include/spawn.h' line='190' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-160'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_adddup2' filepath='/usr/include/spawn.h' line='196' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-160'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='posix_spawn_file_actions_addclosefrom_np' filepath='/usr/include/spawn.h' line='219' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-160'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='rename' filepath='/usr/include/stdio.h' line='154' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='renameat' filepath='/usr/include/stdio.h' line='158' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='ctermid' filepath='/usr/include/stdio.h' line='837' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-17'/>
+      <return type-id='type-id-17'/>
+    </function-decl>
+    <function-decl name='atoi' filepath='/usr/include/stdlib.h' line='105' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='unsetenv' filepath='/usr/include/stdlib.h' line='664' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='system' filepath='/usr/include/stdlib.h' line='791' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='qsort' filepath='/usr/include/stdlib.h' line='838' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-86'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='posix_openpt' filepath='/usr/include/stdlib.h' line='978' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='grantpt' filepath='/usr/include/stdlib.h' line='986' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='unlockpt' filepath='/usr/include/stdlib.h' line='990' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='ptsname' filepath='/usr/include/stdlib.h' line='995' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-17'/>
+    </function-decl>
+    <function-decl name='ptsname_r' filepath='/usr/include/stdlib.h' line='1002' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-17'/>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getloadavg' filepath='/usr/include/stdlib.h' line='1013' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-180'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='strtok_r' filepath='/usr/include/string.h' line='366' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-181'/>
+      <parameter type-id='type-id-179'/>
+      <parameter type-id='type-id-182'/>
+      <return type-id='type-id-17'/>
+    </function-decl>
+    <function-decl name='access' filepath='/usr/include/unistd.h' line='287' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='faccessat' filepath='/usr/include/unistd.h' line='309' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='pipe' filepath='/usr/include/unistd.h' line='437' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-177'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='pipe2' filepath='/usr/include/unistd.h' line='442' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='chown' filepath='/usr/include/unistd.h' line='493' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fchown' filepath='/usr/include/unistd.h' line='498' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='lchown' filepath='/usr/include/unistd.h' line='503' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fchownat' filepath='/usr/include/unistd.h' line='511' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-112'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='chdir' filepath='/usr/include/unistd.h' line='517' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fchdir' filepath='/usr/include/unistd.h' line='521' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='dup2' filepath='/usr/include/unistd.h' line='555' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='dup3' filepath='/usr/include/unistd.h' line='560' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='execve' filepath='/usr/include/unistd.h' line='572' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-127'/>
+      <parameter type-id='type-id-127'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fexecve' filepath='/usr/include/unistd.h' line='578' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-127'/>
+      <parameter type-id='type-id-127'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='execv' filepath='/usr/include/unistd.h' line='584' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-127'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='nice' filepath='/usr/include/unistd.h' line='619' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='pathconf' filepath='/usr/include/unistd.h' line='633' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-183'/>
+    </function-decl>
+    <function-decl name='fpathconf' filepath='/usr/include/unistd.h' line='637' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-183'/>
+    </function-decl>
+    <function-decl name='getpgrp' filepath='/usr/include/unistd.h' line='656' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='getpgid' filepath='/usr/include/unistd.h' line='661' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='setpgid' filepath='/usr/include/unistd.h' line='668' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <parameter type-id='type-id-118'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setpgrp' filepath='/usr/include/unistd.h' line='682' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setsid' filepath='/usr/include/unistd.h' line='689' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='getsid' filepath='/usr/include/unistd.h' line='693' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-118'/>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='getuid' filepath='/usr/include/unistd.h' line='697' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-116'/>
+    </function-decl>
+    <function-decl name='geteuid' filepath='/usr/include/unistd.h' line='700' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-116'/>
+    </function-decl>
+    <function-decl name='getgid' filepath='/usr/include/unistd.h' line='703' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-112'/>
+    </function-decl>
+    <function-decl name='getegid' filepath='/usr/include/unistd.h' line='706' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-112'/>
+    </function-decl>
+    <function-decl name='getgroups' filepath='/usr/include/unistd.h' line='711' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-124'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setuid' filepath='/usr/include/unistd.h' line='722' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-116'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setreuid' filepath='/usr/include/unistd.h' line='727' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-116'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='seteuid' filepath='/usr/include/unistd.h' line='732' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-116'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setgid' filepath='/usr/include/unistd.h' line='739' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setregid' filepath='/usr/include/unistd.h' line='744' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-112'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setegid' filepath='/usr/include/unistd.h' line='749' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getresuid' filepath='/usr/include/unistd.h' line='755' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-126'/>
+      <parameter type-id='type-id-126'/>
+      <parameter type-id='type-id-126'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getresgid' filepath='/usr/include/unistd.h' line='760' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-124'/>
+      <parameter type-id='type-id-124'/>
+      <parameter type-id='type-id-124'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setresuid' filepath='/usr/include/unistd.h' line='765' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-116'/>
+      <parameter type-id='type-id-116'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setresgid' filepath='/usr/include/unistd.h' line='770' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-112'/>
+      <parameter type-id='type-id-112'/>
+      <parameter type-id='type-id-112'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fork' filepath='/usr/include/unistd.h' line='778' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='ttyname_r' filepath='/usr/include/unistd.h' line='803' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-17'/>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='link' filepath='/usr/include/unistd.h' line='819' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='linkat' filepath='/usr/include/unistd.h' line='825' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='symlink' filepath='/usr/include/unistd.h' line='832' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='symlinkat' filepath='/usr/include/unistd.h' line='847' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='readlinkat' filepath='/usr/include/unistd.h' line='851' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-179'/>
+      <parameter type-id='type-id-181'/>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-184'/>
+    </function-decl>
+    <function-decl name='unlink' filepath='/usr/include/unistd.h' line='858' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='unlinkat' filepath='/usr/include/unistd.h' line='862' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='rmdir' filepath='/usr/include/unistd.h' line='867' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='tcgetpgrp' filepath='/usr/include/unistd.h' line='871' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-118'/>
+    </function-decl>
+    <function-decl name='tcsetpgrp' filepath='/usr/include/unistd.h' line='874' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-118'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getlogin' filepath='/usr/include/unistd.h' line='881' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-17'/>
+    </function-decl>
+    <function-decl name='chroot' filepath='/usr/include/unistd.h' line='977' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='fsync' filepath='/usr/include/unistd.h' line='989' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='sync' filepath='/usr/include/unistd.h' line='1005' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='copy_file_range' filepath='/usr/include/unistd.h' line='1142' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-125'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-125'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-101'/>
+      <return type-id='type-id-184'/>
+    </function-decl>
+    <function-decl name='fdatasync' filepath='/usr/include/unistd.h' line='1150' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='login_tty' filepath='/usr/include/utmp.h' line='41' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='__sched_cpucount' filepath='/usr/include/x86_64-linux-gnu/bits/cpu-set.h' line='117' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-132'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='__sched_cpualloc' filepath='/usr/include/x86_64-linux-gnu/bits/cpu-set.h' line='119' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-153'/>
+    </function-decl>
+    <function-decl name='__sched_cpufree' filepath='/usr/include/x86_64-linux-gnu/bits/cpu-set.h' line='120' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-153'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='splice' filepath='/usr/include/x86_64-linux-gnu/bits/fcntl-linux.h' line='421' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-125'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-125'/>
+      <parameter type-id='type-id-21'/>
+      <parameter type-id='type-id-101'/>
+      <return type-id='type-id-185'/>
+    </function-decl>
+    <function-decl name='memfd_create' filepath='/usr/include/x86_64-linux-gnu/bits/mman-shared.h' line='51' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-101'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='unshare' filepath='/usr/include/x86_64-linux-gnu/bits/sched.h' line='86' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='setns' filepath='/usr/include/x86_64-linux-gnu/bits/sched.h' line='95' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='eventfd' filepath='/usr/include/x86_64-linux-gnu/sys/eventfd.h' line='34' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-101'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='eventfd_read' filepath='/usr/include/x86_64-linux-gnu/sys/eventfd.h' line='37' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-155'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='eventfd_write' filepath='/usr/include/x86_64-linux-gnu/sys/eventfd.h' line='40' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-109'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='getpriority' filepath='/usr/include/x86_64-linux-gnu/sys/resource.h' line='105' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-110'/>
+      <parameter type-id='type-id-119'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
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+      <parameter type-id='type-id-261' name='buffer' filepath='Objects/abstract.c' line='370' column='1'/>
+      <parameter type-id='type-id-8' name='buffer_len' filepath='Objects/abstract.c' line='371' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_AsReadBuffer' mangled-name='PyObject_AsReadBuffer' filepath='Objects/abstract.c' line='383' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_AsReadBuffer'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='383' column='1'/>
+      <parameter type-id='type-id-262' name='buffer' filepath='Objects/abstract.c' line='384' column='1'/>
+      <parameter type-id='type-id-8' name='buffer_len' filepath='Objects/abstract.c' line='385' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_AsWriteBuffer' mangled-name='PyObject_AsWriteBuffer' filepath='Objects/abstract.c' line='397' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_AsWriteBuffer'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='397' column='1'/>
+      <parameter type-id='type-id-262' name='buffer' filepath='Objects/abstract.c' line='398' column='1'/>
+      <parameter type-id='type-id-8' name='buffer_len' filepath='Objects/abstract.c' line='399' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_GetBuffer' mangled-name='PyObject_GetBuffer' filepath='Objects/abstract.c' line='426' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_GetBuffer'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='426' column='1'/>
+      <parameter type-id='type-id-263' name='view' filepath='Objects/abstract.c' line='426' column='1'/>
+      <parameter type-id='type-id-5' name='flags' filepath='Objects/abstract.c' line='426' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyBuffer_IsContiguous' mangled-name='PyBuffer_IsContiguous' filepath='Objects/abstract.c' line='515' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_IsContiguous'>
+      <parameter type-id='type-id-255' name='view' filepath='Objects/abstract.c' line='515' column='1'/>
+      <parameter type-id='type-id-53' name='order' filepath='Objects/abstract.c' line='515' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyBuffer_GetPointer' mangled-name='PyBuffer_GetPointer' filepath='Objects/abstract.c' line='531' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_GetPointer'>
+      <parameter type-id='type-id-255' name='view' filepath='Objects/abstract.c' line='531' column='1'/>
+      <parameter type-id='type-id-257' name='indices' filepath='Objects/abstract.c' line='531' column='1'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='PyBuffer_SizeFromFormat' mangled-name='PyBuffer_SizeFromFormat' filepath='Objects/abstract.c' line='579' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_SizeFromFormat'>
+      <parameter type-id='type-id-6' name='format' filepath='Objects/abstract.c' line='579' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyBuffer_FromContiguous' mangled-name='PyBuffer_FromContiguous' filepath='Objects/abstract.c' line='614' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_FromContiguous'>
+      <parameter type-id='type-id-255' name='view' filepath='Objects/abstract.c' line='614' column='1'/>
+      <parameter type-id='type-id-30' name='buf' filepath='Objects/abstract.c' line='614' column='1'/>
+      <parameter type-id='type-id-7' name='len' filepath='Objects/abstract.c' line='614' column='1'/>
+      <parameter type-id='type-id-53' name='fort' filepath='Objects/abstract.c' line='614' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_CopyData' mangled-name='PyObject_CopyData' filepath='Objects/abstract.c' line='666' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_CopyData'>
+      <parameter type-id='type-id-4' name='dest' filepath='Objects/abstract.c' line='666' column='1'/>
+      <parameter type-id='type-id-4' name='src' filepath='Objects/abstract.c' line='666' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyBuffer_FillContiguousStrides' mangled-name='PyBuffer_FillContiguousStrides' filepath='Objects/abstract.c' line='737' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_FillContiguousStrides'>
+      <parameter type-id='type-id-5' name='nd' filepath='Objects/abstract.c' line='737' column='1'/>
+      <parameter type-id='type-id-8' name='shape' filepath='Objects/abstract.c' line='737' column='1'/>
+      <parameter type-id='type-id-8' name='strides' filepath='Objects/abstract.c' line='738' column='1'/>
+      <parameter type-id='type-id-5' name='itemsize' filepath='Objects/abstract.c' line='738' column='1'/>
+      <parameter type-id='type-id-53' name='fort' filepath='Objects/abstract.c' line='739' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyBuffer_FillInfo' mangled-name='PyBuffer_FillInfo' filepath='Objects/abstract.c' line='761' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_FillInfo'>
+      <parameter type-id='type-id-263' name='view' filepath='Objects/abstract.c' line='761' column='1'/>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='761' column='1'/>
+      <parameter type-id='type-id-30' name='buf' filepath='Objects/abstract.c' line='761' column='1'/>
+      <parameter type-id='type-id-7' name='len' filepath='Objects/abstract.c' line='761' column='1'/>
+      <parameter type-id='type-id-5' name='readonly' filepath='Objects/abstract.c' line='762' column='1'/>
+      <parameter type-id='type-id-5' name='flags' filepath='Objects/abstract.c' line='762' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyBuffer_Release' mangled-name='PyBuffer_Release' filepath='Objects/abstract.c' line='804' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyBuffer_Release'>
+      <parameter type-id='type-id-263' name='view' filepath='Objects/abstract.c' line='804' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyBuffer_ReleaseInInterpreter' mangled-name='_PyBuffer_ReleaseInInterpreter' filepath='Objects/abstract.c' line='826' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyBuffer_ReleaseInInterpreter'>
+      <parameter type-id='type-id-28' name='interp' filepath='Objects/abstract.c' line='826' column='1'/>
+      <parameter type-id='type-id-263' name='view' filepath='Objects/abstract.c' line='827' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyBuffer_ReleaseInInterpreterAndRawFree' mangled-name='_PyBuffer_ReleaseInInterpreterAndRawFree' filepath='Objects/abstract.c' line='833' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyBuffer_ReleaseInInterpreterAndRawFree'>
+      <parameter type-id='type-id-28' name='interp' filepath='Objects/abstract.c' line='833' column='1'/>
+      <parameter type-id='type-id-263' name='view' filepath='Objects/abstract.c' line='834' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_Format' mangled-name='PyObject_Format' filepath='Objects/abstract.c' line='840' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_Format'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='840' column='1'/>
+      <parameter type-id='type-id-4' name='format_spec' filepath='Objects/abstract.c' line='840' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Check' mangled-name='PyNumber_Check' filepath='Objects/abstract.c' line='900' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Check'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='900' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyNumber_Or' mangled-name='PyNumber_Or' filepath='Objects/abstract.c' line='1130' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Or'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1130' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1130' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Xor' mangled-name='PyNumber_Xor' filepath='Objects/abstract.c' line='1131' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Xor'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1131' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1131' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_And' mangled-name='PyNumber_And' filepath='Objects/abstract.c' line='1132' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_And'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1132' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1132' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Lshift' mangled-name='PyNumber_Lshift' filepath='Objects/abstract.c' line='1133' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Lshift'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1133' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1133' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Rshift' mangled-name='PyNumber_Rshift' filepath='Objects/abstract.c' line='1134' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Rshift'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1134' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1134' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Subtract' mangled-name='PyNumber_Subtract' filepath='Objects/abstract.c' line='1135' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Subtract'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1135' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1135' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Divmod' mangled-name='PyNumber_Divmod' filepath='Objects/abstract.c' line='1136' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Divmod'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1136' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1136' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Add' mangled-name='PyNumber_Add' filepath='Objects/abstract.c' line='1139' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Add'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1139' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1139' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Multiply' mangled-name='PyNumber_Multiply' filepath='Objects/abstract.c' line='1177' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Multiply'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1177' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1177' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_MatrixMultiply' mangled-name='PyNumber_MatrixMultiply' filepath='Objects/abstract.c' line='1195' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_MatrixMultiply'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1195' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1195' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_FloorDivide' mangled-name='PyNumber_FloorDivide' filepath='Objects/abstract.c' line='1196' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_FloorDivide'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1196' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1196' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_TrueDivide' mangled-name='PyNumber_TrueDivide' filepath='Objects/abstract.c' line='1197' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_TrueDivide'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1197' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1197' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Remainder' mangled-name='PyNumber_Remainder' filepath='Objects/abstract.c' line='1198' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Remainder'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1198' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1198' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Power' mangled-name='PyNumber_Power' filepath='Objects/abstract.c' line='1201' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Power'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1201' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1201' column='1'/>
+      <parameter type-id='type-id-4' name='z' filepath='Objects/abstract.c' line='1201' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceOr' mangled-name='PyNumber_InPlaceOr' filepath='Objects/abstract.c' line='1296' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceOr'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1296' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1296' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceXor' mangled-name='PyNumber_InPlaceXor' filepath='Objects/abstract.c' line='1297' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceXor'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1297' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1297' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceAnd' mangled-name='PyNumber_InPlaceAnd' filepath='Objects/abstract.c' line='1298' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceAnd'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1298' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1298' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceLshift' mangled-name='PyNumber_InPlaceLshift' filepath='Objects/abstract.c' line='1299' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceLshift'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1299' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1299' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceRshift' mangled-name='PyNumber_InPlaceRshift' filepath='Objects/abstract.c' line='1300' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceRshift'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1300' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1300' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceSubtract' mangled-name='PyNumber_InPlaceSubtract' filepath='Objects/abstract.c' line='1301' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceSubtract'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1301' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1301' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceMatrixMultiply' mangled-name='PyNumber_InPlaceMatrixMultiply' filepath='Objects/abstract.c' line='1302' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceMatrixMultiply'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1302' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1302' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceFloorDivide' mangled-name='PyNumber_InPlaceFloorDivide' filepath='Objects/abstract.c' line='1303' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceFloorDivide'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1303' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1303' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceTrueDivide' mangled-name='PyNumber_InPlaceTrueDivide' filepath='Objects/abstract.c' line='1304' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceTrueDivide'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1304' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1304' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceRemainder' mangled-name='PyNumber_InPlaceRemainder' filepath='Objects/abstract.c' line='1305' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceRemainder'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1305' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1305' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceAdd' mangled-name='PyNumber_InPlaceAdd' filepath='Objects/abstract.c' line='1308' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceAdd'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1308' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1308' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlaceMultiply' mangled-name='PyNumber_InPlaceMultiply' filepath='Objects/abstract.c' line='1331' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlaceMultiply'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1331' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1331' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_InPlacePower' mangled-name='PyNumber_InPlacePower' filepath='Objects/abstract.c' line='1360' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_InPlacePower'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='1360' column='1'/>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='1360' column='1'/>
+      <parameter type-id='type-id-4' name='z' filepath='Objects/abstract.c' line='1360' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Negative' mangled-name='PyNumber_Negative' filepath='Objects/abstract.c' line='1392' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Negative'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1392' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Positive' mangled-name='PyNumber_Positive' filepath='Objects/abstract.c' line='1393' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Positive'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1393' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Invert' mangled-name='PyNumber_Invert' filepath='Objects/abstract.c' line='1394' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Invert'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1394' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Absolute' mangled-name='PyNumber_Absolute' filepath='Objects/abstract.c' line='1395' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Absolute'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1395' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyIndex_Check' mangled-name='PyIndex_Check' filepath='Objects/abstract.c' line='1399' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyIndex_Check'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='1399' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyNumber_Index' mangled-name='_PyNumber_Index' filepath='Objects/abstract.c' line='1411' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyNumber_Index'>
+      <parameter type-id='type-id-4' name='item' filepath='Objects/abstract.c' line='1411' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Index' mangled-name='PyNumber_Index' filepath='Objects/abstract.c' line='1457' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Index'>
+      <parameter type-id='type-id-4' name='item' filepath='Objects/abstract.c' line='1457' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_AsSsize_t' mangled-name='PyNumber_AsSsize_t' filepath='Objects/abstract.c' line='1469' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_AsSsize_t'>
+      <parameter type-id='type-id-4' name='item' filepath='Objects/abstract.c' line='1469' column='1'/>
+      <parameter type-id='type-id-4' name='err' filepath='Objects/abstract.c' line='1469' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyNumber_Long' mangled-name='PyNumber_Long' filepath='Objects/abstract.c' line='1520' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Long'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1520' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_Float' mangled-name='PyNumber_Float' filepath='Objects/abstract.c' line='1635' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_Float'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1635' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyNumber_ToBase' mangled-name='PyNumber_ToBase' filepath='Objects/abstract.c' line='1696' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyNumber_ToBase'>
+      <parameter type-id='type-id-4' name='n' filepath='Objects/abstract.c' line='1696' column='1'/>
+      <parameter type-id='type-id-5' name='base' filepath='Objects/abstract.c' line='1696' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_Check' mangled-name='PySequence_Check' filepath='Objects/abstract.c' line='1715' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Check'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1715' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_Size' mangled-name='PySequence_Size' filepath='Objects/abstract.c' line='1724' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Size'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1724' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PySequence_Length' mangled-name='PySequence_Length' filepath='Objects/abstract.c' line='1748' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Length'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1748' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PySequence_Concat' mangled-name='PySequence_Concat' filepath='Objects/abstract.c' line='1755' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Concat'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1755' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1755' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_Repeat' mangled-name='PySequence_Repeat' filepath='Objects/abstract.c' line='1781' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Repeat'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1781' column='1'/>
+      <parameter type-id='type-id-7' name='count' filepath='Objects/abstract.c' line='1781' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_InPlaceConcat' mangled-name='PySequence_InPlaceConcat' filepath='Objects/abstract.c' line='1812' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_InPlaceConcat'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1812' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1812' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_InPlaceRepeat' mangled-name='PySequence_InPlaceRepeat' filepath='Objects/abstract.c' line='1841' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_InPlaceRepeat'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1841' column='1'/>
+      <parameter type-id='type-id-7' name='count' filepath='Objects/abstract.c' line='1841' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_GetItem' mangled-name='PySequence_GetItem' filepath='Objects/abstract.c' line='1875' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_GetItem'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1875' column='1'/>
+      <parameter type-id='type-id-7' name='i' filepath='Objects/abstract.c' line='1875' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_GetSlice' mangled-name='PySequence_GetSlice' filepath='Objects/abstract.c' line='1905' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_GetSlice'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1905' column='1'/>
+      <parameter type-id='type-id-7' name='i1' filepath='Objects/abstract.c' line='1905' column='1'/>
+      <parameter type-id='type-id-7' name='i2' filepath='Objects/abstract.c' line='1905' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_SetItem' mangled-name='PySequence_SetItem' filepath='Objects/abstract.c' line='1927' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_SetItem'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1927' column='1'/>
+      <parameter type-id='type-id-7' name='i' filepath='Objects/abstract.c' line='1927' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1927' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_DelItem' mangled-name='PySequence_DelItem' filepath='Objects/abstract.c' line='1960' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_DelItem'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1960' column='1'/>
+      <parameter type-id='type-id-7' name='i' filepath='Objects/abstract.c' line='1960' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_SetSlice' mangled-name='PySequence_SetSlice' filepath='Objects/abstract.c' line='1993' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_SetSlice'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='1993' column='1'/>
+      <parameter type-id='type-id-7' name='i1' filepath='Objects/abstract.c' line='1993' column='1'/>
+      <parameter type-id='type-id-7' name='i2' filepath='Objects/abstract.c' line='1993' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='1993' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_DelSlice' mangled-name='PySequence_DelSlice' filepath='Objects/abstract.c' line='2016' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_DelSlice'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='2016' column='1'/>
+      <parameter type-id='type-id-7' name='i1' filepath='Objects/abstract.c' line='2016' column='1'/>
+      <parameter type-id='type-id-7' name='i2' filepath='Objects/abstract.c' line='2016' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_Tuple' mangled-name='PySequence_Tuple' filepath='Objects/abstract.c' line='2039' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Tuple'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='2039' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_List' mangled-name='PySequence_List' filepath='Objects/abstract.c' line='2122' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_List'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='2122' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_Fast' mangled-name='PySequence_Fast' filepath='Objects/abstract.c' line='2145' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Fast'>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='2145' column='1'/>
+      <parameter type-id='type-id-6' name='m' filepath='Objects/abstract.c' line='2145' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PySequence_Count' mangled-name='PySequence_Count' filepath='Objects/abstract.c' line='2264' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Count'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='2264' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2264' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PySequence_Contains' mangled-name='PySequence_Contains' filepath='Objects/abstract.c' line='2273' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Contains'>
+      <parameter type-id='type-id-4' name='seq' filepath='Objects/abstract.c' line='2273' column='1'/>
+      <parameter type-id='type-id-4' name='ob' filepath='Objects/abstract.c' line='2273' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_In' mangled-name='PySequence_In' filepath='Objects/abstract.c' line='2288' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_In'>
+      <parameter type-id='type-id-4' name='w' filepath='Objects/abstract.c' line='2288' column='1'/>
+      <parameter type-id='type-id-4' name='v' filepath='Objects/abstract.c' line='2288' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PySequence_Index' mangled-name='PySequence_Index' filepath='Objects/abstract.c' line='2294' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PySequence_Index'>
+      <parameter type-id='type-id-4' name='s' filepath='Objects/abstract.c' line='2294' column='1'/>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2294' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyMapping_Check' mangled-name='PyMapping_Check' filepath='Objects/abstract.c' line='2302' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Check'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2302' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_Size' mangled-name='PyMapping_Size' filepath='Objects/abstract.c' line='2309' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Size'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2309' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyMapping_Length' mangled-name='PyMapping_Length' filepath='Objects/abstract.c' line='2334' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Length'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2334' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyMapping_GetItemString' mangled-name='PyMapping_GetItemString' filepath='Objects/abstract.c' line='2341' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_GetItemString'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2341' column='1'/>
+      <parameter type-id='type-id-6' name='key' filepath='Objects/abstract.c' line='2341' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyMapping_GetOptionalItemString' mangled-name='PyMapping_GetOptionalItemString' filepath='Objects/abstract.c' line='2358' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_GetOptionalItemString'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2358' column='1'/>
+      <parameter type-id='type-id-6' name='key' filepath='Objects/abstract.c' line='2358' column='1'/>
+      <parameter type-id='type-id-238' name='result' filepath='Objects/abstract.c' line='2358' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_SetItemString' mangled-name='PyMapping_SetItemString' filepath='Objects/abstract.c' line='2376' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_SetItemString'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2376' column='1'/>
+      <parameter type-id='type-id-6' name='key' filepath='Objects/abstract.c' line='2376' column='1'/>
+      <parameter type-id='type-id-4' name='value' filepath='Objects/abstract.c' line='2376' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_HasKeyStringWithError' mangled-name='PyMapping_HasKeyStringWithError' filepath='Objects/abstract.c' line='2395' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_HasKeyStringWithError'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2395' column='1'/>
+      <parameter type-id='type-id-6' name='key' filepath='Objects/abstract.c' line='2395' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_HasKeyWithError' mangled-name='PyMapping_HasKeyWithError' filepath='Objects/abstract.c' line='2404' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_HasKeyWithError'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2404' column='1'/>
+      <parameter type-id='type-id-4' name='key' filepath='Objects/abstract.c' line='2404' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_HasKeyString' mangled-name='PyMapping_HasKeyString' filepath='Objects/abstract.c' line='2413' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_HasKeyString'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2413' column='1'/>
+      <parameter type-id='type-id-6' name='key' filepath='Objects/abstract.c' line='2413' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_HasKey' mangled-name='PyMapping_HasKey' filepath='Objects/abstract.c' line='2438' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_HasKey'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2438' column='1'/>
+      <parameter type-id='type-id-4' name='key' filepath='Objects/abstract.c' line='2438' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyMapping_Keys' mangled-name='PyMapping_Keys' filepath='Objects/abstract.c' line='2495' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Keys'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2495' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyMapping_Items' mangled-name='PyMapping_Items' filepath='Objects/abstract.c' line='2507' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Items'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2507' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyMapping_Values' mangled-name='PyMapping_Values' filepath='Objects/abstract.c' line='2519' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyMapping_Values'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2519' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyObject_IsInstance' mangled-name='PyObject_IsInstance' filepath='Objects/abstract.c' line='2739' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_IsInstance'>
+      <parameter type-id='type-id-4' name='inst' filepath='Objects/abstract.c' line='2739' column='1'/>
+      <parameter type-id='type-id-4' name='cls' filepath='Objects/abstract.c' line='2739' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_IsSubclass' mangled-name='PyObject_IsSubclass' filepath='Objects/abstract.c' line='2827' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_IsSubclass'>
+      <parameter type-id='type-id-4' name='derived' filepath='Objects/abstract.c' line='2827' column='1'/>
+      <parameter type-id='type-id-4' name='cls' filepath='Objects/abstract.c' line='2827' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyObject_GetIter' mangled-name='PyObject_GetIter' filepath='Objects/abstract.c' line='2848' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_GetIter'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2848' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyObject_GetAIter' mangled-name='PyObject_GetAIter' filepath='Objects/abstract.c' line='2873' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyObject_GetAIter'>
+      <parameter type-id='type-id-4' name='o' filepath='Objects/abstract.c' line='2873' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyIter_Check' mangled-name='PyIter_Check' filepath='Objects/abstract.c' line='2892' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyIter_Check'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/abstract.c' line='2892' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyAIter_Check' mangled-name='PyAIter_Check' filepath='Objects/abstract.c' line='2900' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyAIter_Check'>
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+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyObject_NewVar' mangled-name='_PyObject_NewVar' filepath='./Include/objimpl.h' line='128' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_NewVar'>
+      <parameter type-id='type-id-1'/>
+      <parameter type-id='type-id-7'/>
+      <return type-id='type-id-321'/>
+    </function-decl>
+    <function-decl name='PyFrozenSet_New' mangled-name='PyFrozenSet_New' filepath='./Include/setobject.h' line='14' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyFrozenSet_New'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeFSDefault' mangled-name='PyUnicode_DecodeFSDefault' filepath='./Include/unicodeobject.h' line='754' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeFSDefault'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Compare' mangled-name='PyUnicode_Compare' filepath='./Include/unicodeobject.h' line='944' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Compare'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='copysign' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='198' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='PyCode_AddWatcher' mangled-name='PyCode_AddWatcher' filepath='Objects/codeobject.c' line='57' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_AddWatcher'>
+      <parameter type-id='type-id-327' name='callback' filepath='Objects/codeobject.c' line='57' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyCode_ClearWatcher' mangled-name='PyCode_ClearWatcher' filepath='Objects/codeobject.c' line='89' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_ClearWatcher'>
+      <parameter type-id='type-id-5' name='watcher_id' filepath='Objects/codeobject.c' line='89' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCode_Quicken' filepath='Objects/codeobject.c' line='461' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-325'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyUnstable_Code_NewWithPosOnlyArgs' mangled-name='PyUnstable_Code_NewWithPosOnlyArgs' filepath='Objects/codeobject.c' line='703' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnstable_Code_NewWithPosOnlyArgs'>
+      <parameter type-id='type-id-5' name='argcount' filepath='Objects/codeobject.c' line='704' column='1'/>
+      <parameter type-id='type-id-5' name='posonlyargcount' filepath='Objects/codeobject.c' line='704' column='1'/>
+      <parameter type-id='type-id-5' name='kwonlyargcount' filepath='Objects/codeobject.c' line='704' column='1'/>
+      <parameter type-id='type-id-5' name='nlocals' filepath='Objects/codeobject.c' line='705' column='1'/>
+      <parameter type-id='type-id-5' name='stacksize' filepath='Objects/codeobject.c' line='705' column='1'/>
+      <parameter type-id='type-id-5' name='flags' filepath='Objects/codeobject.c' line='705' column='1'/>
+      <parameter type-id='type-id-4' name='code' filepath='Objects/codeobject.c' line='706' column='1'/>
+      <parameter type-id='type-id-4' name='consts' filepath='Objects/codeobject.c' line='706' column='1'/>
+      <parameter type-id='type-id-4' name='names' filepath='Objects/codeobject.c' line='706' column='1'/>
+      <parameter type-id='type-id-4' name='varnames' filepath='Objects/codeobject.c' line='707' column='1'/>
+      <parameter type-id='type-id-4' name='freevars' filepath='Objects/codeobject.c' line='707' column='1'/>
+      <parameter type-id='type-id-4' name='cellvars' filepath='Objects/codeobject.c' line='707' column='1'/>
+      <parameter type-id='type-id-4' name='filename' filepath='Objects/codeobject.c' line='708' column='1'/>
+      <parameter type-id='type-id-4' name='name' filepath='Objects/codeobject.c' line='708' column='1'/>
+      <parameter type-id='type-id-4' name='qualname' filepath='Objects/codeobject.c' line='709' column='1'/>
+      <parameter type-id='type-id-5' name='firstlineno' filepath='Objects/codeobject.c' line='709' column='1'/>
+      <parameter type-id='type-id-4' name='linetable' filepath='Objects/codeobject.c' line='710' column='1'/>
+      <parameter type-id='type-id-4' name='exceptiontable' filepath='Objects/codeobject.c' line='711' column='1'/>
+      <return type-id='type-id-325'/>
+    </function-decl>
+    <function-decl name='PyUnstable_Code_New' mangled-name='PyUnstable_Code_New' filepath='Objects/codeobject.c' line='857' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnstable_Code_New'>
+      <parameter type-id='type-id-5' name='argcount' filepath='Objects/codeobject.c' line='857' column='1'/>
+      <parameter type-id='type-id-5' name='kwonlyargcount' filepath='Objects/codeobject.c' line='857' column='1'/>
+      <parameter type-id='type-id-5' name='nlocals' filepath='Objects/codeobject.c' line='858' column='1'/>
+      <parameter type-id='type-id-5' name='stacksize' filepath='Objects/codeobject.c' line='858' column='1'/>
+      <parameter type-id='type-id-5' name='flags' filepath='Objects/codeobject.c' line='858' column='1'/>
+      <parameter type-id='type-id-4' name='code' filepath='Objects/codeobject.c' line='859' column='1'/>
+      <parameter type-id='type-id-4' name='consts' filepath='Objects/codeobject.c' line='859' column='1'/>
+      <parameter type-id='type-id-4' name='names' filepath='Objects/codeobject.c' line='859' column='1'/>
+      <parameter type-id='type-id-4' name='varnames' filepath='Objects/codeobject.c' line='860' column='1'/>
+      <parameter type-id='type-id-4' name='freevars' filepath='Objects/codeobject.c' line='860' column='1'/>
+      <parameter type-id='type-id-4' name='cellvars' filepath='Objects/codeobject.c' line='860' column='1'/>
+      <parameter type-id='type-id-4' name='filename' filepath='Objects/codeobject.c' line='861' column='1'/>
+      <parameter type-id='type-id-4' name='name' filepath='Objects/codeobject.c' line='861' column='1'/>
+      <parameter type-id='type-id-4' name='qualname' filepath='Objects/codeobject.c' line='861' column='1'/>
+      <parameter type-id='type-id-5' name='firstlineno' filepath='Objects/codeobject.c' line='862' column='1'/>
+      <parameter type-id='type-id-4' name='linetable' filepath='Objects/codeobject.c' line='863' column='1'/>
+      <parameter type-id='type-id-4' name='exceptiontable' filepath='Objects/codeobject.c' line='864' column='1'/>
+      <return type-id='type-id-325'/>
+    </function-decl>
+    <function-decl name='PyCode_NewEmpty' mangled-name='PyCode_NewEmpty' filepath='Objects/codeobject.c' line='891' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_NewEmpty'>
+      <parameter type-id='type-id-6' name='filename' filepath='Objects/codeobject.c' line='891' column='1'/>
+      <parameter type-id='type-id-6' name='funcname' filepath='Objects/codeobject.c' line='891' column='1'/>
+      <parameter type-id='type-id-5' name='firstlineno' filepath='Objects/codeobject.c' line='891' column='1'/>
+      <return type-id='type-id-325'/>
+    </function-decl>
+    <function-decl name='PyCode_Addr2Line' mangled-name='PyCode_Addr2Line' filepath='Objects/codeobject.c' line='953' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_Addr2Line'>
+      <parameter type-id='type-id-325' name='co' filepath='Objects/codeobject.c' line='953' column='1'/>
+      <parameter type-id='type-id-5' name='addrq' filepath='Objects/codeobject.c' line='953' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCode_CheckLineNumber' mangled-name='_PyCode_CheckLineNumber' filepath='Objects/codeobject.c' line='988' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCode_CheckLineNumber'>
+      <parameter type-id='type-id-5' name='lasti' filepath='Objects/codeobject.c' line='988' column='1'/>
+      <parameter type-id='type-id-319' name='bounds' filepath='Objects/codeobject.c' line='988' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyCode_Addr2Location' mangled-name='PyCode_Addr2Location' filepath='Objects/codeobject.c' line='1165' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_Addr2Location'>
+      <parameter type-id='type-id-325' name='co' filepath='Objects/codeobject.c' line='1165' column='1'/>
+      <parameter type-id='type-id-5' name='addrq' filepath='Objects/codeobject.c' line='1165' column='1'/>
+      <parameter type-id='type-id-177' name='start_line' filepath='Objects/codeobject.c' line='1166' column='1'/>
+      <parameter type-id='type-id-177' name='start_column' filepath='Objects/codeobject.c' line='1166' column='1'/>
+      <parameter type-id='type-id-177' name='end_line' filepath='Objects/codeobject.c' line='1167' column='1'/>
+      <parameter type-id='type-id-177' name='end_column' filepath='Objects/codeobject.c' line='1167' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyUnstable_Code_GetExtra' mangled-name='PyUnstable_Code_GetExtra' filepath='Objects/codeobject.c' line='1486' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnstable_Code_GetExtra'>
+      <parameter type-id='type-id-4' name='code' filepath='Objects/codeobject.c' line='1486' column='1'/>
+      <parameter type-id='type-id-7' name='index' filepath='Objects/codeobject.c' line='1486' column='1'/>
+      <parameter type-id='type-id-262' name='extra' filepath='Objects/codeobject.c' line='1486' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyUnstable_Code_SetExtra' mangled-name='PyUnstable_Code_SetExtra' filepath='Objects/codeobject.c' line='1507' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnstable_Code_SetExtra'>
+      <parameter type-id='type-id-4' name='code' filepath='Objects/codeobject.c' line='1507' column='1'/>
+      <parameter type-id='type-id-7' name='index' filepath='Objects/codeobject.c' line='1507' column='1'/>
+      <parameter type-id='type-id-30' name='extra' filepath='Objects/codeobject.c' line='1507' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyCode_GetVarnames' mangled-name='PyCode_GetVarnames' filepath='Objects/codeobject.c' line='1585' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_GetVarnames'>
+      <parameter type-id='type-id-325' name='code' filepath='Objects/codeobject.c' line='1585' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyCode_GetCellvars' mangled-name='PyCode_GetCellvars' filepath='Objects/codeobject.c' line='1600' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_GetCellvars'>
+      <parameter type-id='type-id-325' name='code' filepath='Objects/codeobject.c' line='1600' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyCode_GetFreevars' mangled-name='PyCode_GetFreevars' filepath='Objects/codeobject.c' line='1615' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_GetFreevars'>
+      <parameter type-id='type-id-325' name='code' filepath='Objects/codeobject.c' line='1615' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyCode_GetCode' mangled-name='PyCode_GetCode' filepath='Objects/codeobject.c' line='1694' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_GetCode'>
+      <parameter type-id='type-id-325' name='co' filepath='Objects/codeobject.c' line='1694' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCode_ConstantKey' mangled-name='_PyCode_ConstantKey' filepath='Objects/codeobject.c' line='2393' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCode_ConstantKey'>
+      <parameter type-id='type-id-4' name='op' filepath='Objects/codeobject.c' line='2393' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Objects/complexobject.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <pointer-type-def type-id='type-id-328' size-in-bits='64' id='type-id-329'/>
+    <var-decl name='PyComplex_Type' type-id='type-id-266' mangled-name='PyComplex_Type' visibility='default' filepath='./Include/complexobject.h' line='11' column='1' elf-symbol-id='PyComplex_Type'/>
+    <function-decl name='_Py_HashDouble' mangled-name='_Py_HashDouble' filepath='./Include/cpython/pyhash.h' line='30' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_HashDouble'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-301'/>
+    </function-decl>
+    <function-decl name='_PyComplex_FormatAdvancedWriter' filepath='./Include/internal/pycore_complexobject.h' line='15' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-330'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-7'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_string_to_number_with_underscores' filepath='./Include/internal/pycore_floatobject.h' line='52' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-329'/>
+      <return type-id='type-id-4'/>
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+    <function-decl name='_PyUnicode_TransformDecimalAndSpaceToASCII' mangled-name='_PyUnicode_TransformDecimalAndSpaceToASCII' filepath='./Include/internal/pycore_unicodeobject.h' line='202' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_TransformDecimalAndSpaceToASCII'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='atan2' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='59' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
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+    <function-decl name='cos' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='62' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='sin' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='64' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
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+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='log' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='104' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
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+    <function-decl name='pow' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='140' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
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+    <function-decl name='hypot' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='147' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='floor' filepath='/usr/include/x86_64-linux-gnu/bits/mathcalls.h' line='165' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-172'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='_Py_c_sum' mangled-name='_Py_c_sum' filepath='Objects/complexobject.c' line='29' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_c_sum'>
+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='29' column='1'/>
+      <parameter type-id='type-id-324' name='b' filepath='Objects/complexobject.c' line='29' column='1'/>
+      <return type-id='type-id-324'/>
+    </function-decl>
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+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='38' column='1'/>
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+      <return type-id='type-id-324'/>
+    </function-decl>
+    <function-decl name='_Py_c_neg' mangled-name='_Py_c_neg' filepath='Objects/complexobject.c' line='47' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_c_neg'>
+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='47' column='1'/>
+      <return type-id='type-id-324'/>
+    </function-decl>
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+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='56' column='1'/>
+      <parameter type-id='type-id-324' name='b' filepath='Objects/complexobject.c' line='56' column='1'/>
+      <return type-id='type-id-324'/>
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+    <function-decl name='_Py_c_quot' mangled-name='_Py_c_quot' filepath='Objects/complexobject.c' line='69' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_c_quot'>
+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='69' column='1'/>
+      <parameter type-id='type-id-324' name='b' filepath='Objects/complexobject.c' line='69' column='1'/>
+      <return type-id='type-id-324'/>
+    </function-decl>
+    <function-decl name='_Py_c_pow' mangled-name='_Py_c_pow' filepath='Objects/complexobject.c' line='130' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_c_pow'>
+      <parameter type-id='type-id-324' name='a' filepath='Objects/complexobject.c' line='130' column='1'/>
+      <parameter type-id='type-id-324' name='b' filepath='Objects/complexobject.c' line='130' column='1'/>
+      <return type-id='type-id-324'/>
+    </function-decl>
+    <function-decl name='_Py_c_abs' mangled-name='_Py_c_abs' filepath='Objects/complexobject.c' line='186' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_c_abs'>
+      <parameter type-id='type-id-324' name='z' filepath='Objects/complexobject.c' line='186' column='1'/>
+      <return type-id='type-id-172'/>
+    </function-decl>
+    <function-decl name='PyComplex_FromDoubles' mangled-name='PyComplex_FromDoubles' filepath='Objects/complexobject.c' line='251' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyComplex_FromDoubles'>
+      <parameter type-id='type-id-172' name='real' filepath='Objects/complexobject.c' line='251' column='1'/>
+      <parameter type-id='type-id-172' name='imag' filepath='Objects/complexobject.c' line='251' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyComplex_RealAsDouble' mangled-name='PyComplex_RealAsDouble' filepath='Objects/complexobject.c' line='262' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyComplex_RealAsDouble'>
+      <parameter type-id='type-id-4' name='op' filepath='Objects/complexobject.c' line='262' column='1'/>
+      <return type-id='type-id-172'/>
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+    <var-decl name='PyExc_AttributeError' type-id='type-id-4' mangled-name='PyExc_AttributeError' visibility='default' filepath='./Include/pyerrors.h' line='88' column='1' elf-symbol-id='PyExc_AttributeError'/>
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+    <var-decl name='PyExc_FloatingPointError' type-id='type-id-4' mangled-name='PyExc_FloatingPointError' visibility='default' filepath='./Include/pyerrors.h' line='91' column='1' elf-symbol-id='PyExc_FloatingPointError'/>
+    <var-decl name='PyExc_OSError' type-id='type-id-4' mangled-name='PyExc_OSError' visibility='default' filepath='./Include/pyerrors.h' line='92' column='1' elf-symbol-id='PyExc_OSError'/>
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+    <var-decl name='PyExc_IndexError' type-id='type-id-4' mangled-name='PyExc_IndexError' visibility='default' filepath='./Include/pyerrors.h' line='97' column='1' elf-symbol-id='PyExc_IndexError'/>
+    <var-decl name='PyExc_KeyError' type-id='type-id-4' mangled-name='PyExc_KeyError' visibility='default' filepath='./Include/pyerrors.h' line='98' column='1' elf-symbol-id='PyExc_KeyError'/>
+    <var-decl name='PyExc_KeyboardInterrupt' type-id='type-id-4' mangled-name='PyExc_KeyboardInterrupt' visibility='default' filepath='./Include/pyerrors.h' line='99' column='1' elf-symbol-id='PyExc_KeyboardInterrupt'/>
+    <var-decl name='PyExc_MemoryError' type-id='type-id-4' mangled-name='PyExc_MemoryError' visibility='default' filepath='./Include/pyerrors.h' line='100' column='1' elf-symbol-id='PyExc_MemoryError'/>
+    <var-decl name='PyExc_NameError' type-id='type-id-4' mangled-name='PyExc_NameError' visibility='default' filepath='./Include/pyerrors.h' line='101' column='1' elf-symbol-id='PyExc_NameError'/>
+    <var-decl name='PyExc_OverflowError' type-id='type-id-4' mangled-name='PyExc_OverflowError' visibility='default' filepath='./Include/pyerrors.h' line='102' column='1' elf-symbol-id='PyExc_OverflowError'/>
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+    <var-decl name='PyExc_SyntaxError' type-id='type-id-4' mangled-name='PyExc_SyntaxError' visibility='default' filepath='./Include/pyerrors.h' line='108' column='1' elf-symbol-id='PyExc_SyntaxError'/>
+    <var-decl name='PyExc_IndentationError' type-id='type-id-4' mangled-name='PyExc_IndentationError' visibility='default' filepath='./Include/pyerrors.h' line='109' column='1' elf-symbol-id='PyExc_IndentationError'/>
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+    <var-decl name='PyExc_ReferenceError' type-id='type-id-4' mangled-name='PyExc_ReferenceError' visibility='default' filepath='./Include/pyerrors.h' line='111' column='1' elf-symbol-id='PyExc_ReferenceError'/>
+    <var-decl name='PyExc_SystemError' type-id='type-id-4' mangled-name='PyExc_SystemError' visibility='default' filepath='./Include/pyerrors.h' line='112' column='1' elf-symbol-id='PyExc_SystemError'/>
+    <var-decl name='PyExc_SystemExit' type-id='type-id-4' mangled-name='PyExc_SystemExit' visibility='default' filepath='./Include/pyerrors.h' line='113' column='1' elf-symbol-id='PyExc_SystemExit'/>
+    <var-decl name='PyExc_TypeError' type-id='type-id-4' mangled-name='PyExc_TypeError' visibility='default' filepath='./Include/pyerrors.h' line='114' column='1' elf-symbol-id='PyExc_TypeError'/>
+    <var-decl name='PyExc_UnboundLocalError' type-id='type-id-4' mangled-name='PyExc_UnboundLocalError' visibility='default' filepath='./Include/pyerrors.h' line='115' column='1' elf-symbol-id='PyExc_UnboundLocalError'/>
+    <var-decl name='PyExc_UnicodeError' type-id='type-id-4' mangled-name='PyExc_UnicodeError' visibility='default' filepath='./Include/pyerrors.h' line='116' column='1' elf-symbol-id='PyExc_UnicodeError'/>
+    <var-decl name='PyExc_UnicodeEncodeError' type-id='type-id-4' mangled-name='PyExc_UnicodeEncodeError' visibility='default' filepath='./Include/pyerrors.h' line='117' column='1' elf-symbol-id='PyExc_UnicodeEncodeError'/>
+    <var-decl name='PyExc_UnicodeDecodeError' type-id='type-id-4' mangled-name='PyExc_UnicodeDecodeError' visibility='default' filepath='./Include/pyerrors.h' line='118' column='1' elf-symbol-id='PyExc_UnicodeDecodeError'/>
+    <var-decl name='PyExc_UnicodeTranslateError' type-id='type-id-4' mangled-name='PyExc_UnicodeTranslateError' visibility='default' filepath='./Include/pyerrors.h' line='119' column='1' elf-symbol-id='PyExc_UnicodeTranslateError'/>
+    <var-decl name='PyExc_ValueError' type-id='type-id-4' mangled-name='PyExc_ValueError' visibility='default' filepath='./Include/pyerrors.h' line='120' column='1' elf-symbol-id='PyExc_ValueError'/>
+    <var-decl name='PyExc_ZeroDivisionError' type-id='type-id-4' mangled-name='PyExc_ZeroDivisionError' visibility='default' filepath='./Include/pyerrors.h' line='121' column='1' elf-symbol-id='PyExc_ZeroDivisionError'/>
+    <var-decl name='PyExc_BlockingIOError' type-id='type-id-4' mangled-name='PyExc_BlockingIOError' visibility='default' filepath='./Include/pyerrors.h' line='124' column='1' elf-symbol-id='PyExc_BlockingIOError'/>
+    <var-decl name='PyExc_BrokenPipeError' type-id='type-id-4' mangled-name='PyExc_BrokenPipeError' visibility='default' filepath='./Include/pyerrors.h' line='125' column='1' elf-symbol-id='PyExc_BrokenPipeError'/>
+    <var-decl name='PyExc_ChildProcessError' type-id='type-id-4' mangled-name='PyExc_ChildProcessError' visibility='default' filepath='./Include/pyerrors.h' line='126' column='1' elf-symbol-id='PyExc_ChildProcessError'/>
+    <var-decl name='PyExc_ConnectionError' type-id='type-id-4' mangled-name='PyExc_ConnectionError' visibility='default' filepath='./Include/pyerrors.h' line='127' column='1' elf-symbol-id='PyExc_ConnectionError'/>
+    <var-decl name='PyExc_ConnectionAbortedError' type-id='type-id-4' mangled-name='PyExc_ConnectionAbortedError' visibility='default' filepath='./Include/pyerrors.h' line='128' column='1' elf-symbol-id='PyExc_ConnectionAbortedError'/>
+    <var-decl name='PyExc_ConnectionRefusedError' type-id='type-id-4' mangled-name='PyExc_ConnectionRefusedError' visibility='default' filepath='./Include/pyerrors.h' line='129' column='1' elf-symbol-id='PyExc_ConnectionRefusedError'/>
+    <var-decl name='PyExc_ConnectionResetError' type-id='type-id-4' mangled-name='PyExc_ConnectionResetError' visibility='default' filepath='./Include/pyerrors.h' line='130' column='1' elf-symbol-id='PyExc_ConnectionResetError'/>
+    <var-decl name='PyExc_FileExistsError' type-id='type-id-4' mangled-name='PyExc_FileExistsError' visibility='default' filepath='./Include/pyerrors.h' line='131' column='1' elf-symbol-id='PyExc_FileExistsError'/>
+    <var-decl name='PyExc_FileNotFoundError' type-id='type-id-4' mangled-name='PyExc_FileNotFoundError' visibility='default' filepath='./Include/pyerrors.h' line='132' column='1' elf-symbol-id='PyExc_FileNotFoundError'/>
+    <var-decl name='PyExc_InterruptedError' type-id='type-id-4' mangled-name='PyExc_InterruptedError' visibility='default' filepath='./Include/pyerrors.h' line='133' column='1' elf-symbol-id='PyExc_InterruptedError'/>
+    <var-decl name='PyExc_IsADirectoryError' type-id='type-id-4' mangled-name='PyExc_IsADirectoryError' visibility='default' filepath='./Include/pyerrors.h' line='134' column='1' elf-symbol-id='PyExc_IsADirectoryError'/>
+    <var-decl name='PyExc_NotADirectoryError' type-id='type-id-4' mangled-name='PyExc_NotADirectoryError' visibility='default' filepath='./Include/pyerrors.h' line='135' column='1' elf-symbol-id='PyExc_NotADirectoryError'/>
+    <var-decl name='PyExc_PermissionError' type-id='type-id-4' mangled-name='PyExc_PermissionError' visibility='default' filepath='./Include/pyerrors.h' line='136' column='1' elf-symbol-id='PyExc_PermissionError'/>
+    <var-decl name='PyExc_ProcessLookupError' type-id='type-id-4' mangled-name='PyExc_ProcessLookupError' visibility='default' filepath='./Include/pyerrors.h' line='137' column='1' elf-symbol-id='PyExc_ProcessLookupError'/>
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+    <var-decl name='PyExc_EnvironmentError' type-id='type-id-4' mangled-name='PyExc_EnvironmentError' visibility='default' filepath='./Include/pyerrors.h' line='143' column='1' elf-symbol-id='PyExc_EnvironmentError'/>
+    <var-decl name='PyExc_IOError' type-id='type-id-4' mangled-name='PyExc_IOError' visibility='default' filepath='./Include/pyerrors.h' line='144' column='1' elf-symbol-id='PyExc_IOError'/>
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+    <var-decl name='PyExc_UserWarning' type-id='type-id-4' mangled-name='PyExc_UserWarning' visibility='default' filepath='./Include/pyerrors.h' line='151' column='1' elf-symbol-id='PyExc_UserWarning'/>
+    <var-decl name='PyExc_DeprecationWarning' type-id='type-id-4' mangled-name='PyExc_DeprecationWarning' visibility='default' filepath='./Include/pyerrors.h' line='152' column='1' elf-symbol-id='PyExc_DeprecationWarning'/>
+    <var-decl name='PyExc_PendingDeprecationWarning' type-id='type-id-4' mangled-name='PyExc_PendingDeprecationWarning' visibility='default' filepath='./Include/pyerrors.h' line='153' column='1' elf-symbol-id='PyExc_PendingDeprecationWarning'/>
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+    <var-decl name='PyExc_FutureWarning' type-id='type-id-4' mangled-name='PyExc_FutureWarning' visibility='default' filepath='./Include/pyerrors.h' line='156' column='1' elf-symbol-id='PyExc_FutureWarning'/>
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+    <var-decl name='PyExc_BytesWarning' type-id='type-id-4' mangled-name='PyExc_BytesWarning' visibility='default' filepath='./Include/pyerrors.h' line='159' column='1' elf-symbol-id='PyExc_BytesWarning'/>
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+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
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+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
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+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-7'/>
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+    <function-decl name='PyUnicode_ReadChar' mangled-name='PyUnicode_ReadChar' filepath='./Include/unicodeobject.h' line='169' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_ReadChar'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-7'/>
+      <return type-id='type-id-259'/>
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+      <return type-id='type-id-4'/>
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+      <return type-id='type-id-5'/>
+    </function-decl>
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+      <parameter type-id='type-id-4' name='cause' filepath='Objects/exceptions.c' line='400' column='1'/>
+      <return type-id='type-id-3'/>
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+      <parameter type-id='type-id-4' name='context' filepath='Objects/exceptions.c' line='416' column='1'/>
+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-6'/>
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+      <return type-id='type-id-4'/>
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+    <function-decl name='PyUnicodeEncodeError_GetEncoding' mangled-name='PyUnicodeEncodeError_GetEncoding' filepath='Objects/exceptions.c' line='2677' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeEncodeError_GetEncoding'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2677' column='1'/>
+      <return type-id='type-id-4'/>
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+    <function-decl name='PyUnicodeDecodeError_GetEncoding' mangled-name='PyUnicodeDecodeError_GetEncoding' filepath='Objects/exceptions.c' line='2683' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeDecodeError_GetEncoding'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2683' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicodeEncodeError_GetObject' mangled-name='PyUnicodeEncodeError_GetObject' filepath='Objects/exceptions.c' line='2689' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeEncodeError_GetObject'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2689' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicodeDecodeError_GetObject' mangled-name='PyUnicodeDecodeError_GetObject' filepath='Objects/exceptions.c' line='2695' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeDecodeError_GetObject'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2695' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicodeTranslateError_GetObject' mangled-name='PyUnicodeTranslateError_GetObject' filepath='Objects/exceptions.c' line='2701' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeTranslateError_GetObject'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2701' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicodeEncodeError_GetStart' mangled-name='PyUnicodeEncodeError_GetStart' filepath='Objects/exceptions.c' line='2707' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicodeEncodeError_GetStart'>
+      <parameter type-id='type-id-4' name='exc' filepath='Objects/exceptions.c' line='2707' column='1'/>
+      <parameter type-id='type-id-8' name='start' filepath='Objects/exceptions.c' line='2707' column='1'/>
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+      <parameter type-id='type-id-5' name='flags' filepath='Objects/longobject.c' line='1296' column='1'/>
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+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-172'/>
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+      <return type-id='type-id-4'/>
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+      <return type-id='type-id-4'/>
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+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsWhitespace' mangled-name='_PyUnicode_IsWhitespace' filepath='./Include/cpython/unicodeobject.h' line='605' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsWhitespace'>
+      <parameter type-id='type-id-538'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsLinebreak' mangled-name='_PyUnicode_IsLinebreak' filepath='./Include/cpython/unicodeobject.h' line='609' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsLinebreak'>
+      <parameter type-id='type-id-538'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_ToDecimalDigit' mangled-name='_PyUnicode_ToDecimalDigit' filepath='./Include/cpython/unicodeobject.h' line='625' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_ToDecimalDigit'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsDecimalDigit' mangled-name='_PyUnicode_IsDecimalDigit' filepath='./Include/cpython/unicodeobject.h' line='637' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsDecimalDigit'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsDigit' mangled-name='_PyUnicode_IsDigit' filepath='./Include/cpython/unicodeobject.h' line='641' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsDigit'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsNumeric' mangled-name='_PyUnicode_IsNumeric' filepath='./Include/cpython/unicodeobject.h' line='645' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsNumeric'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsAlpha' mangled-name='_PyUnicode_IsAlpha' filepath='./Include/cpython/unicodeobject.h' line='653' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_IsAlpha'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <var-decl name='_Py_ascii_whitespace' type-id='type-id-533' mangled-name='_Py_ascii_whitespace' visibility='default' filepath='./Include/cpython/unicodeobject.h' line='658' column='1' elf-symbol-id='_Py_ascii_whitespace'/>
+    <function-decl name='_PyCodec_InitRegistry' filepath='./Include/internal/pycore_codecs.h' line='16' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-61'/>
+    </function-decl>
+    <function-decl name='_PyCodec_Lookup' filepath='./Include/internal/pycore_codecs.h' line='22' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCodec_EncodeText' filepath='./Include/internal/pycore_codecs.h' line='41' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCodec_DecodeText' filepath='./Include/internal/pycore_codecs.h' line='46' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_Py_DecodeLocaleEx' mangled-name='_Py_DecodeLocaleEx' filepath='./Include/internal/pycore_fileutils.h' line='42' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_DecodeLocaleEx'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-241'/>
+      <parameter type-id='type-id-57'/>
+      <parameter type-id='type-id-261'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-542'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_EncodeLocaleEx' mangled-name='_Py_EncodeLocaleEx' filepath='./Include/internal/pycore_fileutils.h' line='51' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_EncodeLocaleEx'>
+      <parameter type-id='type-id-18'/>
+      <parameter type-id='type-id-248'/>
+      <parameter type-id='type-id-57'/>
+      <parameter type-id='type-id-261'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-542'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_hashtable_new_full' mangled-name='_Py_hashtable_new_full' filepath='./Include/internal/pycore_hashtable.h' line='86' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_hashtable_new_full'>
+      <parameter type-id='type-id-543'/>
+      <parameter type-id='type-id-544'/>
+      <parameter type-id='type-id-545'/>
+      <parameter type-id='type-id-545'/>
+      <parameter type-id='type-id-537'/>
+      <return type-id='type-id-546'/>
+    </function-decl>
+    <function-decl name='_Py_hashtable_destroy' mangled-name='_Py_hashtable_destroy' filepath='./Include/internal/pycore_hashtable.h' line='93' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_hashtable_destroy'>
+      <parameter type-id='type-id-546'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_Py_hashtable_len' mangled-name='_Py_hashtable_len' filepath='./Include/internal/pycore_hashtable.h' line='110' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_hashtable_len'>
+      <parameter type-id='type-id-541'/>
+      <return type-id='type-id-21'/>
+    </function-decl>
+    <function-decl name='_Py_hashtable_set' mangled-name='_Py_hashtable_set' filepath='./Include/internal/pycore_hashtable.h' line='114' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_hashtable_set'>
+      <parameter type-id='type-id-546'/>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_hashtable_get' mangled-name='_Py_hashtable_get' filepath='./Include/internal/pycore_hashtable.h' line='134' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_hashtable_get'>
+      <parameter type-id='type-id-546'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_Py_DumpPathConfig' filepath='./Include/internal/pycore_initconfig.h' line='186' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_GetConfig' filepath='./Include/internal/pycore_interp.h' line='329' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-270'/>
+    </function-decl>
+    <function-decl name='_PyLong_FormatWriter' filepath='./Include/internal/pycore_long.h' line='129' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-330'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicodeTranslateError_Create' filepath='./Include/internal/pycore_pyerrors.h' line='46' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_Py_SetFileSystemEncoding' filepath='./Include/internal/pycore_pylifecycle.h' line='17' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMem_RawWcsdup' filepath='./Include/internal/pycore_pymem.h' line='28' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-18'/>
+      <return type-id='type-id-58'/>
+    </function-decl>
+    <function-decl name='_PyType_GetFullyQualifiedName' filepath='./Include/internal/pycore_typeobject.h' line='225' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1'/>
+      <parameter type-id='type-id-53'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsXidStart' filepath='./Include/internal/pycore_unicodeobject.h' line='19' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsXidContinue' filepath='./Include/internal/pycore_unicodeobject.h' line='20' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_ToLowerFull' filepath='./Include/internal/pycore_unicodeobject.h' line='21' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <parameter type-id='type-id-547'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_ToTitleFull' filepath='./Include/internal/pycore_unicodeobject.h' line='22' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <parameter type-id='type-id-547'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_ToUpperFull' filepath='./Include/internal/pycore_unicodeobject.h' line='23' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <parameter type-id='type-id-547'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_ToFoldedFull' filepath='./Include/internal/pycore_unicodeobject.h' line='24' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <parameter type-id='type-id-547'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsCaseIgnorable' filepath='./Include/internal/pycore_unicodeobject.h' line='25' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_IsCased' filepath='./Include/internal/pycore_unicodeobject.h' line='26' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-259'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_FormatAdvancedWriter' filepath='./Include/internal/pycore_unicodeobject.h' line='81' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-330'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-7'/>
+      <parameter type-id='type-id-7'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <var-decl name='_PyUnicodeASCIIIter_Type' type-id='type-id-266' visibility='default' filepath='./Include/internal/pycore_unicodeobject.h' line='278' column='1'/>
+    <function-decl name='PyOS_FSPath' mangled-name='PyOS_FSPath' filepath='./Include/osmodule.h' line='11' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_FSPath'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <var-decl name='PyUnicode_Type' type-id='type-id-266' mangled-name='PyUnicode_Type' visibility='default' filepath='./Include/unicodeobject.h' line='103' column='1' elf-symbol-id='PyUnicode_Type'/>
+    <var-decl name='PyUnicodeIter_Type' type-id='type-id-266' mangled-name='PyUnicodeIter_Type' visibility='default' filepath='./Include/unicodeobject.h' line='104' column='1' elf-symbol-id='PyUnicodeIter_Type'/>
+    <function-decl name='wmemchr' filepath='/usr/include/wchar.h' line='254' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-18'/>
+      <parameter type-id='type-id-388'/>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-58'/>
+    </function-decl>
+    <function-decl name='wmemcmp' filepath='/usr/include/wchar.h' line='259' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-18'/>
+      <parameter type-id='type-id-18'/>
+      <parameter type-id='type-id-21'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_GetErrorHandler' mangled-name='_Py_GetErrorHandler' filepath='Objects/unicodeobject.c' line='511' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_GetErrorHandler'>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='511' column='1'/>
+      <return type-id='type-id-542'/>
+    </function-decl>
+    <function-decl name='PyUnicode_CopyCharacters' mangled-name='PyUnicode_CopyCharacters' filepath='Objects/unicodeobject.c' line='1597' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_CopyCharacters'>
+      <parameter type-id='type-id-4' name='to' filepath='Objects/unicodeobject.c' line='1597' column='1'/>
+      <parameter type-id='type-id-7' name='to_start' filepath='Objects/unicodeobject.c' line='1597' column='1'/>
+      <parameter type-id='type-id-4' name='from' filepath='Objects/unicodeobject.c' line='1598' column='1'/>
+      <parameter type-id='type-id-7' name='from_start' filepath='Objects/unicodeobject.c' line='1598' column='1'/>
+      <parameter type-id='type-id-7' name='how_many' filepath='Objects/unicodeobject.c' line='1599' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Resize' mangled-name='PyUnicode_Resize' filepath='Objects/unicodeobject.c' line='1858' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Resize'>
+      <parameter type-id='type-id-238' name='p_unicode' filepath='Objects/unicodeobject.c' line='1858' column='1'/>
+      <parameter type-id='type-id-7' name='length' filepath='Objects/unicodeobject.c' line='1858' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FromWideChar' mangled-name='PyUnicode_FromWideChar' filepath='Objects/unicodeobject.c' line='1960' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FromWideChar'>
+      <parameter type-id='type-id-18' name='u' filepath='Objects/unicodeobject.c' line='1960' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='1960' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FromKindAndData' mangled-name='PyUnicode_FromKindAndData' filepath='Objects/unicodeobject.c' line='2267' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FromKindAndData'>
+      <parameter type-id='type-id-5' name='kind' filepath='Objects/unicodeobject.c' line='2267' column='1'/>
+      <parameter type-id='type-id-30' name='buffer' filepath='Objects/unicodeobject.c' line='2267' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='2267' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsUCS4' mangled-name='PyUnicode_AsUCS4' filepath='Objects/unicodeobject.c' line='2487' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsUCS4'>
+      <parameter type-id='type-id-4' name='string' filepath='Objects/unicodeobject.c' line='2487' column='1'/>
+      <parameter type-id='type-id-547' name='target' filepath='Objects/unicodeobject.c' line='2487' column='1'/>
+      <parameter type-id='type-id-7' name='targetsize' filepath='Objects/unicodeobject.c' line='2487' column='1'/>
+      <parameter type-id='type-id-5' name='copy_null' filepath='Objects/unicodeobject.c' line='2488' column='1'/>
+      <return type-id='type-id-547'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsUCS4Copy' mangled-name='PyUnicode_AsUCS4Copy' filepath='Objects/unicodeobject.c' line='2498' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsUCS4Copy'>
+      <parameter type-id='type-id-4' name='string' filepath='Objects/unicodeobject.c' line='2498' column='1'/>
+      <return type-id='type-id-547'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsWideCharString' mangled-name='PyUnicode_AsWideCharString' filepath='Objects/unicodeobject.c' line='3226' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsWideCharString'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3226' column='1'/>
+      <parameter type-id='type-id-8' name='size' filepath='Objects/unicodeobject.c' line='3227' column='1'/>
+      <return type-id='type-id-58'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FromOrdinal' mangled-name='PyUnicode_FromOrdinal' filepath='Objects/unicodeobject.c' line='3322' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FromOrdinal'>
+      <parameter type-id='type-id-5' name='ordinal' filepath='Objects/unicodeobject.c' line='3322' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FromObject' mangled-name='PyUnicode_FromObject' filepath='Objects/unicodeobject.c' line='3334' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FromObject'>
+      <parameter type-id='type-id-4' name='obj' filepath='Objects/unicodeobject.c' line='3334' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsDecodedObject' mangled-name='PyUnicode_AsDecodedObject' filepath='Objects/unicodeobject.c' line='3545' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsDecodedObject'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3545' column='1'/>
+      <parameter type-id='type-id-6' name='encoding' filepath='Objects/unicodeobject.c' line='3546' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3547' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsDecodedUnicode' mangled-name='PyUnicode_AsDecodedUnicode' filepath='Objects/unicodeobject.c' line='3567' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsDecodedUnicode'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3567' column='1'/>
+      <parameter type-id='type-id-6' name='encoding' filepath='Objects/unicodeobject.c' line='3568' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3569' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsEncodedObject' mangled-name='PyUnicode_AsEncodedObject' filepath='Objects/unicodeobject.c' line='3606' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsEncodedObject'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3606' column='1'/>
+      <parameter type-id='type-id-6' name='encoding' filepath='Objects/unicodeobject.c' line='3607' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3608' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_EncodeLocale' mangled-name='PyUnicode_EncodeLocale' filepath='Objects/unicodeobject.c' line='3688' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_EncodeLocale'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3688' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3688' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_EncodeFSDefault' mangled-name='PyUnicode_EncodeFSDefault' filepath='Objects/unicodeobject.c' line='3695' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_EncodeFSDefault'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3695' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsEncodedUnicode' mangled-name='PyUnicode_AsEncodedUnicode' filepath='Objects/unicodeobject.c' line='3829' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsEncodedUnicode'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='3829' column='1'/>
+      <parameter type-id='type-id-6' name='encoding' filepath='Objects/unicodeobject.c' line='3830' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3831' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeLocaleAndSize' mangled-name='PyUnicode_DecodeLocaleAndSize' filepath='Objects/unicodeobject.c' line='3909' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeLocaleAndSize'>
+      <parameter type-id='type-id-6' name='str' filepath='Objects/unicodeobject.c' line='3909' column='1'/>
+      <parameter type-id='type-id-7' name='len' filepath='Objects/unicodeobject.c' line='3909' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3910' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeLocale' mangled-name='PyUnicode_DecodeLocale' filepath='Objects/unicodeobject.c' line='3917' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeLocale'>
+      <parameter type-id='type-id-6' name='str' filepath='Objects/unicodeobject.c' line='3917' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='3917' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeFSDefaultAndSize' mangled-name='PyUnicode_DecodeFSDefaultAndSize' filepath='Objects/unicodeobject.c' line='3932' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeFSDefaultAndSize'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='3932' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='3932' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FSConverter' mangled-name='PyUnicode_FSConverter' filepath='Objects/unicodeobject.c' line='3968' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FSConverter'>
+      <parameter type-id='type-id-4' name='arg' filepath='Objects/unicodeobject.c' line='3968' column='1'/>
+      <parameter type-id='type-id-30' name='addr' filepath='Objects/unicodeobject.c' line='3968' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FSDecoder' mangled-name='PyUnicode_FSDecoder' filepath='Objects/unicodeobject.c' line='4008' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FSDecoder'>
+      <parameter type-id='type-id-4' name='arg' filepath='Objects/unicodeobject.c' line='4008' column='1'/>
+      <parameter type-id='type-id-30' name='addr' filepath='Objects/unicodeobject.c' line='4008' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_AsUTF8NoNUL' mangled-name='_PyUnicode_AsUTF8NoNUL' filepath='Objects/unicodeobject.c' line='4087' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_AsUTF8NoNUL'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='4087' column='1'/>
+      <return type-id='type-id-6'/>
+    </function-decl>
+    <function-decl name='PyUnicode_GetSize' mangled-name='PyUnicode_GetSize' filepath='Objects/unicodeobject.c' line='4107' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_GetSize'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='4107' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_GetLength' mangled-name='PyUnicode_GetLength' filepath='Objects/unicodeobject.c' line='4115' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_GetLength'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='4115' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_WriteChar' mangled-name='PyUnicode_WriteChar' filepath='Objects/unicodeobject.c' line='4144' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_WriteChar'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='4144' column='1'/>
+      <parameter type-id='type-id-7' name='index' filepath='Objects/unicodeobject.c' line='4144' column='1'/>
+      <parameter type-id='type-id-259' name='ch' filepath='Objects/unicodeobject.c' line='4144' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF7' mangled-name='PyUnicode_DecodeUTF7' filepath='Objects/unicodeobject.c' line='4506' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF7'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='4506' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='4507' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='4508' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF7Stateful' mangled-name='PyUnicode_DecodeUTF7Stateful' filepath='Objects/unicodeobject.c' line='4521' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF7Stateful'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='4521' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='4522' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='4523' column='1'/>
+      <parameter type-id='type-id-8' name='consumed' filepath='Objects/unicodeobject.c' line='4524' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF32' mangled-name='PyUnicode_DecodeUTF32' filepath='Objects/unicodeobject.c' line='5468' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF32'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='5468' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='5469' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5470' column='1'/>
+      <parameter type-id='type-id-177' name='byteorder' filepath='Objects/unicodeobject.c' line='5471' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF32Stateful' mangled-name='PyUnicode_DecodeUTF32Stateful' filepath='Objects/unicodeobject.c' line='5477' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF32Stateful'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='5477' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='5478' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5479' column='1'/>
+      <parameter type-id='type-id-177' name='byteorder' filepath='Objects/unicodeobject.c' line='5480' column='1'/>
+      <parameter type-id='type-id-8' name='consumed' filepath='Objects/unicodeobject.c' line='5481' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_EncodeUTF32' mangled-name='_PyUnicode_EncodeUTF32' filepath='Objects/unicodeobject.c' line='5622' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_EncodeUTF32'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='5622' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5623' column='1'/>
+      <parameter type-id='type-id-5' name='byteorder' filepath='Objects/unicodeobject.c' line='5624' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsUTF32String' mangled-name='PyUnicode_AsUTF32String' filepath='Objects/unicodeobject.c' line='5767' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsUTF32String'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='5767' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF16' mangled-name='PyUnicode_DecodeUTF16' filepath='Objects/unicodeobject.c' line='5775' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF16'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='5775' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='5776' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5777' column='1'/>
+      <parameter type-id='type-id-177' name='byteorder' filepath='Objects/unicodeobject.c' line='5778' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUTF16Stateful' mangled-name='PyUnicode_DecodeUTF16Stateful' filepath='Objects/unicodeobject.c' line='5784' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUTF16Stateful'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='5784' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='5785' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5786' column='1'/>
+      <parameter type-id='type-id-177' name='byteorder' filepath='Objects/unicodeobject.c' line='5787' column='1'/>
+      <parameter type-id='type-id-8' name='consumed' filepath='Objects/unicodeobject.c' line='5788' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_EncodeUTF16' mangled-name='_PyUnicode_EncodeUTF16' filepath='Objects/unicodeobject.c' line='5939' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_EncodeUTF16'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='5939' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='5940' column='1'/>
+      <parameter type-id='type-id-5' name='byteorder' filepath='Objects/unicodeobject.c' line='5941' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsUTF16String' mangled-name='PyUnicode_AsUTF16String' filepath='Objects/unicodeobject.c' line='6103' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsUTF16String'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='6103' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeUnicodeEscape' mangled-name='PyUnicode_DecodeUnicodeEscape' filepath='Objects/unicodeobject.c' line='6405' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeUnicodeEscape'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='6405' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='6406' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='6407' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsUnicodeEscapeString' mangled-name='PyUnicode_AsUnicodeEscapeString' filepath='Objects/unicodeobject.c' line='6415' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsUnicodeEscapeString'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='6415' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeRawUnicodeEscape' mangled-name='PyUnicode_DecodeRawUnicodeEscape' filepath='Objects/unicodeobject.c' line='6668' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeRawUnicodeEscape'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='6668' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='6669' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='6670' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsRawUnicodeEscapeString' mangled-name='PyUnicode_AsRawUnicodeEscapeString' filepath='Objects/unicodeobject.c' line='6677' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsRawUnicodeEscapeString'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='6677' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsLatin1String' mangled-name='PyUnicode_AsLatin1String' filepath='Objects/unicodeobject.c' line='7058' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsLatin1String'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='7058' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_DecodeCharmap' mangled-name='PyUnicode_DecodeCharmap' filepath='Objects/unicodeobject.c' line='8107' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_DecodeCharmap'>
+      <parameter type-id='type-id-6' name='s' filepath='Objects/unicodeobject.c' line='8107' column='1'/>
+      <parameter type-id='type-id-7' name='size' filepath='Objects/unicodeobject.c' line='8108' column='1'/>
+      <parameter type-id='type-id-4' name='mapping' filepath='Objects/unicodeobject.c' line='8109' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='8110' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_BuildEncodingMap' mangled-name='PyUnicode_BuildEncodingMap' filepath='Objects/unicodeobject.c' line='8183' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_BuildEncodingMap'>
+      <parameter type-id='type-id-4' name='string' filepath='Objects/unicodeobject.c' line='8183' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_AsCharmapString' mangled-name='PyUnicode_AsCharmapString' filepath='Objects/unicodeobject.c' line='8664' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_AsCharmapString'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='8664' column='1'/>
+      <parameter type-id='type-id-4' name='mapping' filepath='Objects/unicodeobject.c' line='8665' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Translate' mangled-name='PyUnicode_Translate' filepath='Objects/unicodeobject.c' line='9080' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Translate'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='9080' column='1'/>
+      <parameter type-id='type-id-4' name='mapping' filepath='Objects/unicodeobject.c' line='9081' column='1'/>
+      <parameter type-id='type-id-6' name='errors' filepath='Objects/unicodeobject.c' line='9082' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Count' mangled-name='PyUnicode_Count' filepath='Objects/unicodeobject.c' line='9372' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Count'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='9372' column='1'/>
+      <parameter type-id='type-id-4' name='substr' filepath='Objects/unicodeobject.c' line='9373' column='1'/>
+      <parameter type-id='type-id-7' name='start' filepath='Objects/unicodeobject.c' line='9374' column='1'/>
+      <parameter type-id='type-id-7' name='end' filepath='Objects/unicodeobject.c' line='9375' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Find' mangled-name='PyUnicode_Find' filepath='Objects/unicodeobject.c' line='9384' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Find'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='9384' column='1'/>
+      <parameter type-id='type-id-4' name='substr' filepath='Objects/unicodeobject.c' line='9385' column='1'/>
+      <parameter type-id='type-id-7' name='start' filepath='Objects/unicodeobject.c' line='9386' column='1'/>
+      <parameter type-id='type-id-7' name='end' filepath='Objects/unicodeobject.c' line='9387' column='1'/>
+      <parameter type-id='type-id-5' name='direction' filepath='Objects/unicodeobject.c' line='9388' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_FindChar' mangled-name='PyUnicode_FindChar' filepath='Objects/unicodeobject.c' line='9397' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_FindChar'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='9397' column='1'/>
+      <parameter type-id='type-id-259' name='ch' filepath='Objects/unicodeobject.c' line='9397' column='1'/>
+      <parameter type-id='type-id-7' name='start' filepath='Objects/unicodeobject.c' line='9398' column='1'/>
+      <parameter type-id='type-id-7' name='end' filepath='Objects/unicodeobject.c' line='9398' column='1'/>
+      <parameter type-id='type-id-5' name='direction' filepath='Objects/unicodeobject.c' line='9399' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Tailmatch' mangled-name='PyUnicode_Tailmatch' filepath='Objects/unicodeobject.c' line='9480' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Tailmatch'>
+      <parameter type-id='type-id-4' name='str' filepath='Objects/unicodeobject.c' line='9480' column='1'/>
+      <parameter type-id='type-id-4' name='substr' filepath='Objects/unicodeobject.c' line='9481' column='1'/>
+      <parameter type-id='type-id-7' name='start' filepath='Objects/unicodeobject.c' line='9482' column='1'/>
+      <parameter type-id='type-id-7' name='end' filepath='Objects/unicodeobject.c' line='9483' column='1'/>
+      <parameter type-id='type-id-5' name='direction' filepath='Objects/unicodeobject.c' line='9484' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='_PyUnicode_JoinArray' mangled-name='_PyUnicode_JoinArray' filepath='Objects/unicodeobject.c' line='9750' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyUnicode_JoinArray'>
+      <parameter type-id='type-id-4' name='separator' filepath='Objects/unicodeobject.c' line='9750' column='1'/>
+      <parameter type-id='type-id-258' name='items' filepath='Objects/unicodeobject.c' line='9750' column='1'/>
+      <parameter type-id='type-id-7' name='seqlen' filepath='Objects/unicodeobject.c' line='9750' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Fill' mangled-name='PyUnicode_Fill' filepath='Objects/unicodeobject.c' line='9930' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Fill'>
+      <parameter type-id='type-id-4' name='unicode' filepath='Objects/unicodeobject.c' line='9930' column='1'/>
+      <parameter type-id='type-id-7' name='start' filepath='Objects/unicodeobject.c' line='9930' column='1'/>
+      <parameter type-id='type-id-7' name='length' filepath='Objects/unicodeobject.c' line='9930' column='1'/>
+      <parameter type-id='type-id-259' name='fill_char' filepath='Objects/unicodeobject.c' line='9931' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='PyUnicode_Splitlines' mangled-name='PyUnicode_Splitlines' filepath='Objects/unicodeobject.c' line='10004' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_Splitlines'>
+      <parameter type-id='type-id-4' name='string' filepath='Objects/unicodeobject.c' line='10004' column='1'/>
+      <parameter type-id='type-id-5' name='keepends' filepath='Objects/unicodeobject.c' line='10004' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyUnicode_EqualToUTF8' mangled-name='PyUnicode_EqualToUTF8' filepath='Objects/unicodeobject.c' line='10874' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnicode_EqualToUTF8'>
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+      <return type-id='type-id-609'/>
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+    <function-decl name='_PyPegen_get_last_nonnwhitespace_token' filepath='Parser/pegen.h' line='146' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-685'/>
+    </function-decl>
+    <function-decl name='_PyPegen_name_token' filepath='Parser/pegen.h' line='148' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_number_token' filepath='Parser/pegen.h' line='149' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_string_token' filepath='Parser/pegen.h' line='150' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_Pypegen_stack_overflow' filepath='Parser/pegen.h' line='171' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_invalid_target' filepath='Parser/pegen.h' line='222' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-721'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_expr_name' filepath='Parser/pegen.h' line='223' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-6'/>
+    </function-decl>
+    <function-decl name='_PyPegen_dummy_name' filepath='Parser/pegen.h' line='248' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_last_item' filepath='Parser/pegen.h' line='249' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_first_item' filepath='Parser/pegen.h' line='251' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyPegen_new_type_comment' filepath='Parser/pegen.h' line='256' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyPegen_add_type_comment_to_arg' filepath='Parser/pegen.h' line='295' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-683'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-683'/>
+    </function-decl>
+    <function-decl name='_PyPegen_singleton_seq' filepath='Parser/pegen.h' line='297' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-712'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_insert_in_front' filepath='Parser/pegen.h' line='298' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-712'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_append_to_end' filepath='Parser/pegen.h' line='299' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-712'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_flatten' filepath='Parser/pegen.h' line='300' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-712'/>
+    </function-decl>
+    <function-decl name='_PyPegen_join_names_with_dot' filepath='Parser/pegen.h' line='301' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_count_dots' filepath='Parser/pegen.h' line='302' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyPegen_alias_for_star' filepath='Parser/pegen.h' line='303' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-551'/>
+    </function-decl>
+    <function-decl name='_PyPegen_map_names_to_ids' filepath='Parser/pegen.h' line='304' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-610'/>
+      <return type-id='type-id-642'/>
+    </function-decl>
+    <function-decl name='_PyPegen_cmpop_expr_pair' filepath='Parser/pegen.h' line='305' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-701'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-724'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_cmpops' filepath='Parser/pegen.h' line='306' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-680'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_exprs' filepath='Parser/pegen.h' line='307' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-610'/>
+    </function-decl>
+    <function-decl name='_PyPegen_set_expr_context' filepath='Parser/pegen.h' line='308' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-682'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_key_value_pair' filepath='Parser/pegen.h' line='309' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-726'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_keys' filepath='Parser/pegen.h' line='310' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-610'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_values' filepath='Parser/pegen.h' line='311' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-610'/>
+    </function-decl>
+    <function-decl name='_PyPegen_key_pattern_pair' filepath='Parser/pegen.h' line='312' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-557'/>
+      <return type-id='type-id-725'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_pattern_keys' filepath='Parser/pegen.h' line='313' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-610'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_patterns' filepath='Parser/pegen.h' line='314' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-660'/>
+    </function-decl>
+    <function-decl name='_PyPegen_name_default_pair' filepath='Parser/pegen.h' line='315' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-683'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-728'/>
+    </function-decl>
+    <function-decl name='_PyPegen_slash_with_default' filepath='Parser/pegen.h' line='316' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-681'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-730'/>
+    </function-decl>
+    <function-decl name='_PyPegen_star_etc' filepath='Parser/pegen.h' line='317' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-683'/>
+      <parameter type-id='type-id-712'/>
+      <parameter type-id='type-id-683'/>
+      <return type-id='type-id-731'/>
+    </function-decl>
+    <function-decl name='_PyPegen_make_arguments' filepath='Parser/pegen.h' line='318' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-681'/>
+      <parameter type-id='type-id-730'/>
+      <parameter type-id='type-id-681'/>
+      <parameter type-id='type-id-712'/>
+      <parameter type-id='type-id-731'/>
+      <return type-id='type-id-633'/>
+    </function-decl>
+    <function-decl name='_PyPegen_empty_arguments' filepath='Parser/pegen.h' line='320' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-633'/>
+    </function-decl>
+    <function-decl name='_PyPegen_formatted_value' filepath='Parser/pegen.h' line='321' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-685'/>
+      <parameter type-id='type-id-729'/>
+      <parameter type-id='type-id-729'/>
+      <parameter type-id='type-id-685'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_augoperator' filepath='Parser/pegen.h' line='323' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-637'/>
+      <return type-id='type-id-723'/>
+    </function-decl>
+    <function-decl name='_PyPegen_function_def_decorators' filepath='Parser/pegen.h' line='324' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-610'/>
+      <parameter type-id='type-id-559'/>
+      <return type-id='type-id-559'/>
+    </function-decl>
+    <function-decl name='_PyPegen_class_def_decorators' filepath='Parser/pegen.h' line='325' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-610'/>
+      <parameter type-id='type-id-559'/>
+      <return type-id='type-id-559'/>
+    </function-decl>
+    <function-decl name='_PyPegen_keyword_or_starred' filepath='Parser/pegen.h' line='326' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-30'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-727'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_extract_starred_exprs' filepath='Parser/pegen.h' line='327' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-610'/>
+    </function-decl>
+    <function-decl name='_PyPegen_seq_delete_starred_exprs' filepath='Parser/pegen.h' line='328' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-636'/>
+    </function-decl>
+    <function-decl name='_PyPegen_collect_call_seqs' filepath='Parser/pegen.h' line='329' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-610'/>
+      <parameter type-id='type-id-712'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_constant_from_token' filepath='Parser/pegen.h' line='332' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_decoded_constant_from_token' filepath='Parser/pegen.h' line='333' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_constant_from_string' filepath='Parser/pegen.h' line='334' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_concatenate_strings' filepath='Parser/pegen.h' line='335' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-610'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_ensure_imaginary' filepath='Parser/pegen.h' line='337' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_ensure_real' filepath='Parser/pegen.h' line='338' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_join_sequences' filepath='Parser/pegen.h' line='339' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-712'/>
+      <parameter type-id='type-id-712'/>
+      <return type-id='type-id-712'/>
+    </function-decl>
+    <function-decl name='_PyPegen_check_barry_as_flufl' filepath='Parser/pegen.h' line='340' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyPegen_check_legacy_stmt' filepath='Parser/pegen.h' line='341' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyPegen_check_fstring_conversion' filepath='Parser/pegen.h' line='342' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-729'/>
+    </function-decl>
+    <function-decl name='_PyPegen_setup_full_format_spec' filepath='Parser/pegen.h' line='343' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
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+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-729'/>
+    </function-decl>
+    <function-decl name='_PyPegen_make_module' filepath='Parser/pegen.h' line='345' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-607'/>
+      <return type-id='type-id-575'/>
+    </function-decl>
+    <function-decl name='_PyPegen_arguments_parsing_error' filepath='Parser/pegen.h' line='346' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyPegen_get_last_comprehension_item' filepath='Parser/pegen.h' line='347' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-743'/>
+      <return type-id='type-id-609'/>
+    </function-decl>
+    <function-decl name='_PyPegen_nonparen_genexp_in_call' filepath='Parser/pegen.h' line='348' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-609'/>
+      <parameter type-id='type-id-742'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyPegen_interactive_exit' filepath='Parser/pegen.h' line='359' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-607'/>
+    </function-decl>
+    <function-decl name='_PyPegen_joined_str' filepath='Parser/pegen.h' line='362' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-685'/>
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+      <return type-id='type-id-609'/>
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+      <return type-id='type-id-685'/>
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+      <return type-id='type-id-609'/>
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+      <parameter type-id='type-id-684'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-609'/>
+    </function-type>
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+      <parameter type-id='type-id-684'/>
+      <return type-id='type-id-30'/>
+    </function-type>
+  </abi-instr>
+  <abi-instr address-size='64' path='Parser/peg_api.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <class-decl name='PyCompilerFlags' size-in-bits='64' is-struct='yes' naming-typedef-id='type-id-745' visibility='default' filepath='./Include/cpython/compile.h' line='27' column='1' id='type-id-746'>
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+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-366'/>
+      <parameter type-id='type-id-1160'/>
+      <parameter type-id='type-id-1160'/>
+      <return type-id='type-id-1160'/>
+    </function-decl>
+    <function-decl name='_Py_call_instrumentation_arg' filepath='./Include/internal/pycore_instruments.h' line='55' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-366'/>
+      <parameter type-id='type-id-1160'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_call_instrumentation_2args' filepath='./Include/internal/pycore_instruments.h' line='59' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-366'/>
+      <parameter type-id='type-id-1160'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_Py_call_instrumentation_exc2' filepath='./Include/internal/pycore_instruments.h' line='63' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-366'/>
+      <parameter type-id='type-id-1160'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyModuleSpec_IsInitializing' filepath='./Include/internal/pycore_moduleobject.h' line='13' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyModuleSpec_GetFileOrigin' filepath='./Include/internal/pycore_moduleobject.h' line='14' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-238'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyModule_IsPossiblyShadowing' filepath='./Include/internal/pycore_moduleobject.h' line='15' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyType_NewManagedObject' filepath='./Include/internal/pycore_object.h' line='696' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyErr_GetTopmostException' filepath='./Include/internal/pycore_pyerrors.h' line='14' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-239'/>
+    </function-decl>
+    <function-decl name='_PyErr_SetImportErrorWithNameFrom' filepath='./Include/internal/pycore_pyerrors.h' line='58' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyErr_SetObject' filepath='./Include/internal/pycore_pyerrors.h' line='110' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyExc_CreateExceptionGroup' filepath='./Include/internal/pycore_pyerrors.h' line='146' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_Py_CalculateSuggestions' filepath='./Include/internal/pycore_pyerrors.h' line='157' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyBuildSlice_ConsumeRefs' filepath='./Include/internal/pycore_sliceobject.h' line='15' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PySys_Audit' filepath='./Include/internal/pycore_sysmodule.h' line='17' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyErr_SetHandledException' mangled-name='PyErr_SetHandledException' filepath='./Include/pyerrors.h' line='23' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_SetHandledException'>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyTraceBack_Here' mangled-name='PyTraceBack_Here' filepath='./Include/traceback.h' line='9' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyTraceBack_Here'>
+      <parameter type-id='type-id-351'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='Py_GetRecursionLimit' mangled-name='Py_GetRecursionLimit' filepath='Python/ceval.c' line='262' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_GetRecursionLimit'>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='Py_SetRecursionLimit' mangled-name='Py_SetRecursionLimit' filepath='Python/ceval.c' line='269' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_SetRecursionLimit'>
+      <parameter type-id='type-id-5' name='new_limit' filepath='Python/ceval.c' line='269' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyEval_MatchKeys' mangled-name='_PyEval_MatchKeys' filepath='Python/ceval.c' line='355' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_MatchKeys'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='355' column='1'/>
+      <parameter type-id='type-id-4' name='map' filepath='Python/ceval.c' line='355' column='1'/>
+      <parameter type-id='type-id-4' name='keys' filepath='Python/ceval.c' line='355' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyEval_MatchClass' mangled-name='_PyEval_MatchClass' filepath='Python/ceval.c' line='459' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_MatchClass'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='459' column='1'/>
+      <parameter type-id='type-id-4' name='subject' filepath='Python/ceval.c' line='459' column='1'/>
+      <parameter type-id='type-id-4' name='type' filepath='Python/ceval.c' line='459' column='1'/>
+      <parameter type-id='type-id-7' name='nargs' filepath='Python/ceval.c' line='460' column='1'/>
+      <parameter type-id='type-id-4' name='kwargs' filepath='Python/ceval.c' line='460' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_EvalFrame' mangled-name='PyEval_EvalFrame' filepath='Python/ceval.c' line='610' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_EvalFrame'>
+      <parameter type-id='type-id-351' name='f' filepath='Python/ceval.c' line='610' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_EvalFrameEx' mangled-name='PyEval_EvalFrameEx' filepath='Python/ceval.c' line='618' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_EvalFrameEx'>
+      <parameter type-id='type-id-351' name='f' filepath='Python/ceval.c' line='618' column='1'/>
+      <parameter type-id='type-id-5' name='throwflag' filepath='Python/ceval.c' line='618' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyEval_FrameClearAndPop' mangled-name='_PyEval_FrameClearAndPop' filepath='Python/ceval.c' line='1697' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_FrameClearAndPop'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='1697' column='1'/>
+      <parameter type-id='type-id-366' name='frame' filepath='Python/ceval.c' line='1697' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyEvalFramePushAndInit' mangled-name='_PyEvalFramePushAndInit' filepath='Python/ceval.c' line='1709' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEvalFramePushAndInit'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='1709' column='1'/>
+      <parameter type-id='type-id-308' name='func' filepath='Python/ceval.c' line='1709' column='1'/>
+      <parameter type-id='type-id-4' name='locals' filepath='Python/ceval.c' line='1710' column='1'/>
+      <parameter type-id='type-id-258' name='args' filepath='Python/ceval.c' line='1710' column='1'/>
+      <parameter type-id='type-id-21' name='argcount' filepath='Python/ceval.c' line='1711' column='1'/>
+      <parameter type-id='type-id-4' name='kwnames' filepath='Python/ceval.c' line='1711' column='1'/>
+      <return type-id='type-id-366'/>
+    </function-decl>
+    <function-decl name='_PyEval_ExceptionGroupMatch' mangled-name='_PyEval_ExceptionGroupMatch' filepath='Python/ceval.c' line='1994' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_ExceptionGroupMatch'>
+      <parameter type-id='type-id-4' name='exc_value' filepath='Python/ceval.c' line='1994' column='1'/>
+      <parameter type-id='type-id-4' name='match_type' filepath='Python/ceval.c' line='1994' column='1'/>
+      <parameter type-id='type-id-238' name='match' filepath='Python/ceval.c' line='1995' column='1'/>
+      <parameter type-id='type-id-238' name='rest' filepath='Python/ceval.c' line='1995' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyEval_UnpackIterable' mangled-name='_PyEval_UnpackIterable' filepath='Python/ceval.c' line='2057' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_UnpackIterable'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2057' column='1'/>
+      <parameter type-id='type-id-4' name='v' filepath='Python/ceval.c' line='2057' column='1'/>
+      <parameter type-id='type-id-5' name='argcnt' filepath='Python/ceval.c' line='2058' column='1'/>
+      <parameter type-id='type-id-5' name='argcntafter' filepath='Python/ceval.c' line='2058' column='1'/>
+      <parameter type-id='type-id-238' name='sp' filepath='Python/ceval.c' line='2058' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyEval_MonitorRaise' mangled-name='_PyEval_MonitorRaise' filepath='Python/ceval.c' line='2190' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_MonitorRaise'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2190' column='1'/>
+      <parameter type-id='type-id-366' name='frame' filepath='Python/ceval.c' line='2190' column='1'/>
+      <parameter type-id='type-id-1160' name='instr' filepath='Python/ceval.c' line='2191' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThreadState_EnterTracing' mangled-name='PyThreadState_EnterTracing' filepath='Python/ceval.c' line='2261' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_EnterTracing'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2261' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThreadState_LeaveTracing' mangled-name='PyThreadState_LeaveTracing' filepath='Python/ceval.c' line='2268' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_LeaveTracing'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2268' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyEval_SetProfile' mangled-name='PyEval_SetProfile' filepath='Python/ceval.c' line='2292' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_SetProfile'>
+      <parameter type-id='type-id-1022' name='func' filepath='Python/ceval.c' line='2292' column='1'/>
+      <parameter type-id='type-id-4' name='arg' filepath='Python/ceval.c' line='2292' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyEval_SetProfileAllThreads' mangled-name='PyEval_SetProfileAllThreads' filepath='Python/ceval.c' line='2302' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_SetProfileAllThreads'>
+      <parameter type-id='type-id-1022' name='func' filepath='Python/ceval.c' line='2302' column='1'/>
+      <parameter type-id='type-id-4' name='arg' filepath='Python/ceval.c' line='2302' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyEval_SetTrace' mangled-name='PyEval_SetTrace' filepath='Python/ceval.c' line='2323' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_SetTrace'>
+      <parameter type-id='type-id-1022' name='func' filepath='Python/ceval.c' line='2323' column='1'/>
+      <parameter type-id='type-id-4' name='arg' filepath='Python/ceval.c' line='2323' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyEval_SetTraceAllThreads' mangled-name='PyEval_SetTraceAllThreads' filepath='Python/ceval.c' line='2333' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_SetTraceAllThreads'>
+      <parameter type-id='type-id-1022' name='func' filepath='Python/ceval.c' line='2333' column='1'/>
+      <parameter type-id='type-id-4' name='arg' filepath='Python/ceval.c' line='2333' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFrame' mangled-name='PyEval_GetFrame' filepath='Python/ceval.c' line='2421' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFrame'>
+      <return type-id='type-id-351'/>
+    </function-decl>
+    <function-decl name='PyEval_GetLocals' mangled-name='PyEval_GetLocals' filepath='Python/ceval.c' line='2469' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetLocals'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFrameLocals' mangled-name='PyEval_GetFrameLocals' filepath='Python/ceval.c' line='2559' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFrameLocals'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFrameGlobals' mangled-name='PyEval_GetFrameGlobals' filepath='Python/ceval.c' line='2564' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFrameGlobals'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFrameBuiltins' mangled-name='PyEval_GetFrameBuiltins' filepath='Python/ceval.c' line='2574' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFrameBuiltins'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFuncName' mangled-name='PyEval_GetFuncName' filepath='Python/ceval.c' line='2600' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFuncName'>
+      <parameter type-id='type-id-4' name='func' filepath='Python/ceval.c' line='2600' column='1'/>
+      <return type-id='type-id-6'/>
+    </function-decl>
+    <function-decl name='PyEval_GetFuncDesc' mangled-name='PyEval_GetFuncDesc' filepath='Python/ceval.c' line='2613' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyEval_GetFuncDesc'>
+      <parameter type-id='type-id-4' name='func' filepath='Python/ceval.c' line='2613' column='1'/>
+      <return type-id='type-id-6'/>
+    </function-decl>
+    <function-decl name='_PyEval_CheckExceptTypeValid' mangled-name='_PyEval_CheckExceptTypeValid' filepath='Python/ceval.c' line='2866' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_CheckExceptTypeValid'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2866' column='1'/>
+      <parameter type-id='type-id-4' name='right' filepath='Python/ceval.c' line='2866' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyEval_CheckExceptStarTypeValid' mangled-name='_PyEval_CheckExceptStarTypeValid' filepath='Python/ceval.c' line='2891' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_CheckExceptStarTypeValid'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2891' column='1'/>
+      <parameter type-id='type-id-4' name='right' filepath='Python/ceval.c' line='2891' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyEval_FormatKwargsError' mangled-name='_PyEval_FormatKwargsError' filepath='Python/ceval.c' line='2948' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_FormatKwargsError'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2948' column='1'/>
+      <parameter type-id='type-id-4' name='func' filepath='Python/ceval.c' line='2948' column='1'/>
+      <parameter type-id='type-id-4' name='kwargs' filepath='Python/ceval.c' line='2948' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyEval_FormatExcCheckArg' mangled-name='_PyEval_FormatExcCheckArg' filepath='Python/ceval.c' line='2990' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_FormatExcCheckArg'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='2990' column='1'/>
+      <parameter type-id='type-id-4' name='exc' filepath='Python/ceval.c' line='2990' column='1'/>
+      <parameter type-id='type-id-6' name='format_str' filepath='Python/ceval.c' line='2991' column='1'/>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/ceval.c' line='2991' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyEval_FormatExcUnbound' mangled-name='_PyEval_FormatExcUnbound' filepath='Python/ceval.c' line='3019' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_FormatExcUnbound'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='3019' column='1'/>
+      <parameter type-id='type-id-325' name='co' filepath='Python/ceval.c' line='3019' column='1'/>
+      <parameter type-id='type-id-5' name='oparg' filepath='Python/ceval.c' line='3019' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyEval_FormatAwaitableError' mangled-name='_PyEval_FormatAwaitableError' filepath='Python/ceval.c' line='3036' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyEval_FormatAwaitableError'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/ceval.c' line='3036' column='1'/>
+      <parameter type-id='type-id-1' name='type' filepath='Python/ceval.c' line='3036' column='1'/>
+      <parameter type-id='type-id-5' name='oparg' filepath='Python/ceval.c' line='3036' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyUnstable_Eval_RequestCodeExtraIndex' mangled-name='PyUnstable_Eval_RequestCodeExtraIndex' filepath='Python/ceval.c' line='3056' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyUnstable_Eval_RequestCodeExtraIndex'>
+      <parameter type-id='type-id-385' name='free' filepath='Python/ceval.c' line='3056' column='1'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
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+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfgBuilder_UseLabel' filepath='./Include/internal/pycore_flowgraph.h' line='17' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <parameter type-id='type-id-1577'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfgBuilder_Addop' filepath='./Include/internal/pycore_flowgraph.h' line='18' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <parameter type-id='type-id-5'/>
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+      <parameter type-id='type-id-1539'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfgBuilder_New' filepath='./Include/internal/pycore_flowgraph.h' line='20' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-1597'/>
+    </function-decl>
+    <function-decl name='_PyCfgBuilder_Free' filepath='./Include/internal/pycore_flowgraph.h' line='21' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyCfgBuilder_CheckSize' filepath='./Include/internal/pycore_flowgraph.h' line='22' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfg_OptimizeCodeUnit' filepath='./Include/internal/pycore_flowgraph.h' line='24' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfg_ToInstructionSequence' filepath='./Include/internal/pycore_flowgraph.h' line='27' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <parameter type-id='type-id-1545'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCfg_OptimizedCfgToInstructionSequence' filepath='./Include/internal/pycore_flowgraph.h' line='28' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1597'/>
+      <parameter type-id='type-id-1598'/>
+      <parameter type-id='type-id-5'/>
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+      <parameter type-id='type-id-1545'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyAssemble_MakeCodeObject' filepath='./Include/internal/pycore_flowgraph.h' line='33' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1598'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-5'/>
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+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-325'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_New' mangled-name='_PyInstructionSequence_New' filepath='./Include/internal/pycore_instruction_sequence.h' line='54' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInstructionSequence_New'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_UseLabel' filepath='./Include/internal/pycore_instruction_sequence.h' line='56' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_Addop' filepath='./Include/internal/pycore_instruction_sequence.h' line='57' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-1539'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_NewLabel' filepath='./Include/internal/pycore_instruction_sequence.h' line='60' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <return type-id='type-id-1577'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_InsertInstruction' filepath='./Include/internal/pycore_instruction_sequence.h' line='62' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-1539'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInstructionSequence_AddNested' filepath='./Include/internal/pycore_instruction_sequence.h' line='64' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <parameter type-id='type-id-1545'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyInstructionSequence_Fini' filepath='./Include/internal/pycore_instruction_sequence.h' line='65' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1545'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <var-decl name='_PyOpcode_opcode_metadata' type-id='type-id-1571' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='964' column='1'/>
+    <var-decl name='_PyOpcode_macro_expansion' type-id='type-id-1569' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='1198' column='1'/>
+    <var-decl name='_PyOpcode_OpName' type-id='type-id-1566' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='1366' column='1'/>
+    <var-decl name='_PyOpcode_Caches' type-id='type-id-1574' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='1596' column='1'/>
+    <var-decl name='_PyOpcode_Deopt' type-id='type-id-1574' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='1621' column='1'/>
+    <var-decl name='_PyOpcode_PseudoTargets' type-id='type-id-1573' visibility='default' filepath='./Include/internal/pycore_opcode_metadata.h' line='1889' column='1'/>
+    <function-decl name='_PyST_GetSymbol' filepath='./Include/internal/pycore_symtable.h' line='141' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1596'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-183'/>
+    </function-decl>
+    <function-decl name='_PyST_GetScope' filepath='./Include/internal/pycore_symtable.h' line='142' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1596'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyST_IsFunctionLike' filepath='./Include/internal/pycore_symtable.h' line='143' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1596'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PySymtable_Build' filepath='./Include/internal/pycore_symtable.h' line='145' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-574'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-1591'/>
+      <return type-id='type-id-210'/>
+    </function-decl>
+    <function-decl name='_PySymtable_Lookup' filepath='./Include/internal/pycore_symtable.h' line='149' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-210'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-1596'/>
+    </function-decl>
+    <function-decl name='_PySymtable_Free' filepath='./Include/internal/pycore_symtable.h' line='151' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-210'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_Py_MaybeMangle' filepath='./Include/internal/pycore_symtable.h' line='153' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-1596'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyFuture_FromAST' filepath='./Include/internal/pycore_symtable.h' line='196' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-574'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-1591'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyCompile_OpcodeStackEffectWithJump' mangled-name='PyCompile_OpcodeStackEffectWithJump' filepath='Python/compile.c' line='773' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCompile_OpcodeStackEffectWithJump'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='773' column='1'/>
+      <parameter type-id='type-id-5' name='oparg' filepath='Python/compile.c' line='773' column='1'/>
+      <parameter type-id='type-id-5' name='jump' filepath='Python/compile.c' line='773' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeIsValid' mangled-name='_PyCompile_OpcodeIsValid' filepath='Python/compile.c' line='785' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeIsValid'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='785' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasArg' mangled-name='_PyCompile_OpcodeHasArg' filepath='Python/compile.c' line='791' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasArg'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='791' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasConst' mangled-name='_PyCompile_OpcodeHasConst' filepath='Python/compile.c' line='797' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasConst'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='797' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasName' mangled-name='_PyCompile_OpcodeHasName' filepath='Python/compile.c' line='803' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasName'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='803' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasJump' mangled-name='_PyCompile_OpcodeHasJump' filepath='Python/compile.c' line='809' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasJump'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='809' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasFree' mangled-name='_PyCompile_OpcodeHasFree' filepath='Python/compile.c' line='815' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasFree'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='815' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasLocal' mangled-name='_PyCompile_OpcodeHasLocal' filepath='Python/compile.c' line='821' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasLocal'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='821' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OpcodeHasExc' mangled-name='_PyCompile_OpcodeHasExc' filepath='Python/compile.c' line='827' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OpcodeHasExc'>
+      <parameter type-id='type-id-5' name='opcode' filepath='Python/compile.c' line='827' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_CleanDoc' mangled-name='_PyCompile_CleanDoc' filepath='Python/compile.c' line='7745' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_CleanDoc'>
+      <parameter type-id='type-id-4' name='doc' filepath='Python/compile.c' line='7745' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCompile_CodeGen' mangled-name='_PyCompile_CodeGen' filepath='Python/compile.c' line='7832' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_CodeGen'>
+      <parameter type-id='type-id-4' name='ast' filepath='Python/compile.c' line='7832' column='1'/>
+      <parameter type-id='type-id-4' name='filename' filepath='Python/compile.c' line='7832' column='1'/>
+      <parameter type-id='type-id-209' name='pflags' filepath='Python/compile.c' line='7832' column='1'/>
+      <parameter type-id='type-id-5' name='optimize' filepath='Python/compile.c' line='7833' column='1'/>
+      <parameter type-id='type-id-5' name='compile_mode' filepath='Python/compile.c' line='7833' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCompile_OptimizeCfg' mangled-name='_PyCompile_OptimizeCfg' filepath='Python/compile.c' line='7922' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_OptimizeCfg'>
+      <parameter type-id='type-id-4' name='seq' filepath='Python/compile.c' line='7922' column='1'/>
+      <parameter type-id='type-id-4' name='consts' filepath='Python/compile.c' line='7922' column='1'/>
+      <parameter type-id='type-id-5' name='nlocals' filepath='Python/compile.c' line='7922' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCfg_JumpLabelsToTargets' filepath='Python/compile.c' line='7950' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1599'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCompile_Assemble' mangled-name='_PyCompile_Assemble' filepath='Python/compile.c' line='7953' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCompile_Assemble'>
+      <parameter type-id='type-id-1598' name='umd' filepath='Python/compile.c' line='7953' column='1'/>
+      <parameter type-id='type-id-4' name='filename' filepath='Python/compile.c' line='7953' column='1'/>
+      <parameter type-id='type-id-4' name='seq' filepath='Python/compile.c' line='7954' column='1'/>
+      <return type-id='type-id-325'/>
+    </function-decl>
+    <function-decl name='PyCode_Optimize' mangled-name='PyCode_Optimize' filepath='Python/compile.c' line='8008' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyCode_Optimize'>
+      <parameter type-id='type-id-4' name='code' filepath='Python/compile.c' line='8008' column='1'/>
+      <parameter type-id='type-id-4' name='_unused_consts' filepath='Python/compile.c' line='8008' column='1'/>
+      <parameter type-id='type-id-4' name='_unused_names' filepath='Python/compile.c' line='8009' column='1'/>
+      <parameter type-id='type-id-4' name='_unused_lnotab_obj' filepath='Python/compile.c' line='8009' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/context.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <var-decl name='PyContext_Type' type-id='type-id-266' mangled-name='PyContext_Type' visibility='default' filepath='./Include/cpython/context.h' line='8' column='1' elf-symbol-id='PyContext_Type'/>
+    <var-decl name='PyContextVar_Type' type-id='type-id-266' mangled-name='PyContextVar_Type' visibility='default' filepath='./Include/cpython/context.h' line='11' column='1' elf-symbol-id='PyContextVar_Type'/>
+    <var-decl name='PyContextToken_Type' type-id='type-id-266' mangled-name='PyContextToken_Type' visibility='default' filepath='./Include/cpython/context.h' line='14' column='1' elf-symbol-id='PyContextToken_Type'/>
+    <var-decl name='_PyContextTokenMissing_Type' type-id='type-id-266' visibility='default' filepath='./Include/internal/pycore_context.h' line='12' column='1'/>
+    <function-decl name='_PyHamt_New' filepath='./Include/internal/pycore_hamt.h' line='95' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-1129'/>
+    </function-decl>
+    <function-decl name='_PyHamt_Assoc' filepath='./Include/internal/pycore_hamt.h' line='99' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-1129'/>
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+    <function-decl name='_PyHamt_Without' filepath='./Include/internal/pycore_hamt.h' line='102' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-1129'/>
+    </function-decl>
+    <function-decl name='_PyHamt_Find' filepath='./Include/internal/pycore_hamt.h' line='111' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-238'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyHamt_Eq' filepath='./Include/internal/pycore_hamt.h' line='120' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <parameter type-id='type-id-1129'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyHamt_Len' filepath='./Include/internal/pycore_hamt.h' line='123' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <return type-id='type-id-7'/>
+    </function-decl>
+    <function-decl name='_PyHamt_NewIterKeys' filepath='./Include/internal/pycore_hamt.h' line='126' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyHamt_NewIterValues' filepath='./Include/internal/pycore_hamt.h' line='129' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyHamt_NewIterItems' filepath='./Include/internal/pycore_hamt.h' line='132' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1129'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyContext_NewHamtForTests' mangled-name='_PyContext_NewHamtForTests' filepath='Python/context.c' line='78' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyContext_NewHamtForTests'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyContext_New' mangled-name='PyContext_New' filepath='Python/context.c' line='85' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyContext_New'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyContext_Copy' mangled-name='PyContext_Copy' filepath='Python/context.c' line='92' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyContext_Copy'>
+      <parameter type-id='type-id-4' name='octx' filepath='Python/context.c' line='92' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyContext_CopyCurrent' mangled-name='PyContext_CopyCurrent' filepath='Python/context.c' line='101' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyContext_CopyCurrent'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyContext_Enter' mangled-name='PyContext_Enter' filepath='Python/context.c' line='135' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyContext_Enter'>
+      <parameter type-id='type-id-4' name='octx' filepath='Python/context.c' line='135' column='1'/>
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+    <function-decl name='_PyInterpreterState_IsReady' mangled-name='_PyInterpreterState_IsReady' filepath='./Include/internal/pycore_interp.h' line='322' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_IsReady'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_SetWhence' filepath='./Include/internal/pycore_interp.h' line='325' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <parameter type-id='type-id-183'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_SetRunningMain' mangled-name='_PyInterpreterState_SetRunningMain' filepath='./Include/internal/pycore_pystate.h' line='84' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_SetRunningMain'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_SetNotRunningMain' mangled-name='_PyInterpreterState_SetNotRunningMain' filepath='./Include/internal/pycore_pystate.h' line='85' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_SetNotRunningMain'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyThreadState_NewBound' mangled-name='_PyThreadState_NewBound' filepath='./Include/internal/pycore_pystate.h' line='225' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_NewBound'>
+      <parameter type-id='type-id-28'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-27'/>
+    </function-decl>
+    <function-decl name='Py_EndInterpreter' mangled-name='Py_EndInterpreter' filepath='./Include/pylifecycle.h' line='22' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_EndInterpreter'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyInterpreterState_Delete' mangled-name='PyInterpreterState_Delete' filepath='./Include/pystate.h' line='16' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_Delete'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyInterpreterState_GetID' mangled-name='PyInterpreterState_GetID' filepath='./Include/pystate.h' line='36' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_GetID'>
+      <parameter type-id='type-id-28'/>
+      <return type-id='type-id-460'/>
+    </function-decl>
+    <function-decl name='PyThreadState_Clear' mangled-name='PyThreadState_Clear' filepath='./Include/pystate.h' line='49' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_Clear'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThreadState_Delete' mangled-name='PyThreadState_Delete' filepath='./Include/pystate.h' line='50' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_Delete'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThreadState_Swap' mangled-name='PyThreadState_Swap' filepath='./Include/pystate.h' line='65' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_Swap'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-27'/>
+    </function-decl>
+    <function-decl name='PyThreadState_GetInterpreter' mangled-name='PyThreadState_GetInterpreter' filepath='./Include/pystate.h' line='71' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetInterpreter'>
+      <parameter type-id='type-id-27'/>
+      <return type-id='type-id-28'/>
+    </function-decl>
+    <function-decl name='PyErr_PrintEx' mangled-name='PyErr_PrintEx' filepath='./Include/pythonrun.h' line='13' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_PrintEx'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_New' mangled-name='_PyCrossInterpreterData_New' filepath='Python/crossinterp.c' line='75' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_New'>
+      <return type-id='type-id-1482'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_Free' mangled-name='_PyCrossInterpreterData_Free' filepath='Python/crossinterp.c' line='86' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Free'>
+      <parameter type-id='type-id-1482' name='xid' filepath='Python/crossinterp.c' line='86' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_Init' mangled-name='_PyCrossInterpreterData_Init' filepath='Python/crossinterp.c' line='124' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Init'>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='124' column='1'/>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/crossinterp.c' line='125' column='1'/>
+      <parameter type-id='type-id-30' name='shared' filepath='Python/crossinterp.c' line='126' column='1'/>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/crossinterp.c' line='126' column='1'/>
+      <parameter type-id='type-id-1133' name='new_object' filepath='Python/crossinterp.c' line='127' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_InitWithSize' mangled-name='_PyCrossInterpreterData_InitWithSize' filepath='Python/crossinterp.c' line='148' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_InitWithSize'>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='148' column='1'/>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/crossinterp.c' line='149' column='1'/>
+      <parameter type-id='type-id-1632' name='size' filepath='Python/crossinterp.c' line='150' column='1'/>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/crossinterp.c' line='150' column='1'/>
+      <parameter type-id='type-id-1133' name='new_object' filepath='Python/crossinterp.c' line='151' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_Clear' mangled-name='_PyCrossInterpreterData_Clear' filepath='Python/crossinterp.c' line='167' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Clear'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/crossinterp.c' line='167' column='1'/>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='168' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyObject_CheckCrossInterpreterData' mangled-name='_PyObject_CheckCrossInterpreterData' filepath='Python/crossinterp.c' line='224' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_CheckCrossInterpreterData'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/crossinterp.c' line='224' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyObject_GetCrossInterpreterData' mangled-name='_PyObject_GetCrossInterpreterData' filepath='Python/crossinterp.c' line='238' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_GetCrossInterpreterData'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/crossinterp.c' line='238' column='1'/>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='238' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_NewObject' mangled-name='_PyCrossInterpreterData_NewObject' filepath='Python/crossinterp.c' line='274' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_NewObject'>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='274' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_Release' mangled-name='_PyCrossInterpreterData_Release' filepath='Python/crossinterp.c' line='324' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Release'>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='324' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_ReleaseAndRawFree' mangled-name='_PyCrossInterpreterData_ReleaseAndRawFree' filepath='Python/crossinterp.c' line='330' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_ReleaseAndRawFree'>
+      <parameter type-id='type-id-1482' name='data' filepath='Python/crossinterp.c' line='330' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_InitExcInfo' mangled-name='_PyXI_InitExcInfo' filepath='Python/crossinterp.c' line='921' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_InitExcInfo'>
+      <parameter type-id='type-id-1627' name='info' filepath='Python/crossinterp.c' line='921' column='1'/>
+      <parameter type-id='type-id-4' name='exc' filepath='Python/crossinterp.c' line='921' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_FormatExcInfo' mangled-name='_PyXI_FormatExcInfo' filepath='Python/crossinterp.c' line='943' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_FormatExcInfo'>
+      <parameter type-id='type-id-1627' name='info' filepath='Python/crossinterp.c' line='943' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyXI_ExcInfoAsObject' mangled-name='_PyXI_ExcInfoAsObject' filepath='Python/crossinterp.c' line='949' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_ExcInfoAsObject'>
+      <parameter type-id='type-id-1627' name='info' filepath='Python/crossinterp.c' line='949' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyXI_ClearExcInfo' mangled-name='_PyXI_ClearExcInfo' filepath='Python/crossinterp.c' line='955' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_ClearExcInfo'>
+      <parameter type-id='type-id-1627' name='info' filepath='Python/crossinterp.c' line='955' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyXI_ApplyError' mangled-name='_PyXI_ApplyError' filepath='Python/crossinterp.c' line='1054' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_ApplyError'>
+      <parameter type-id='type-id-1621' name='error' filepath='Python/crossinterp.c' line='1054' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyXI_FreeNamespace' mangled-name='_PyXI_FreeNamespace' filepath='Python/crossinterp.c' line='1396' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_FreeNamespace'>
+      <parameter type-id='type-id-1628' name='ns' filepath='Python/crossinterp.c' line='1396' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyXI_NamespaceFromNames' mangled-name='_PyXI_NamespaceFromNames' filepath='Python/crossinterp.c' line='1421' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_NamespaceFromNames'>
+      <parameter type-id='type-id-4' name='names' filepath='Python/crossinterp.c' line='1421' column='1'/>
+      <return type-id='type-id-1628'/>
+    </function-decl>
+    <function-decl name='_PyXI_FillNamespaceFromDict' mangled-name='_PyXI_FillNamespaceFromDict' filepath='Python/crossinterp.c' line='1449' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_FillNamespaceFromDict'>
+      <parameter type-id='type-id-1628' name='ns' filepath='Python/crossinterp.c' line='1449' column='1'/>
+      <parameter type-id='type-id-4' name='nsobj' filepath='Python/crossinterp.c' line='1449' column='1'/>
+      <parameter type-id='type-id-1629' name='session' filepath='Python/crossinterp.c' line='1450' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_ApplyNamespace' mangled-name='_PyXI_ApplyNamespace' filepath='Python/crossinterp.c' line='1511' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_ApplyNamespace'>
+      <parameter type-id='type-id-1628' name='ns' filepath='Python/crossinterp.c' line='1511' column='1'/>
+      <parameter type-id='type-id-4' name='nsobj' filepath='Python/crossinterp.c' line='1511' column='1'/>
+      <parameter type-id='type-id-4' name='dflt' filepath='Python/crossinterp.c' line='1511' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_ApplyCapturedException' mangled-name='_PyXI_ApplyCapturedException' filepath='Python/crossinterp.c' line='1679' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_ApplyCapturedException'>
+      <parameter type-id='type-id-1629' name='session' filepath='Python/crossinterp.c' line='1679' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyXI_HasCapturedException' mangled-name='_PyXI_HasCapturedException' filepath='Python/crossinterp.c' line='1690' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_HasCapturedException'>
+      <parameter type-id='type-id-1629' name='session' filepath='Python/crossinterp.c' line='1690' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_Enter' mangled-name='_PyXI_Enter' filepath='Python/crossinterp.c' line='1696' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_Enter'>
+      <parameter type-id='type-id-1629' name='session' filepath='Python/crossinterp.c' line='1696' column='1'/>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/crossinterp.c' line='1697' column='1'/>
+      <parameter type-id='type-id-4' name='nsupdates' filepath='Python/crossinterp.c' line='1697' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyXI_Exit' mangled-name='_PyXI_Exit' filepath='Python/crossinterp.c' line='1764' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_Exit'>
+      <parameter type-id='type-id-1629' name='session' filepath='Python/crossinterp.c' line='1764' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyXI_NewInterpreter' mangled-name='_PyXI_NewInterpreter' filepath='Python/crossinterp.c' line='1824' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_NewInterpreter'>
+      <parameter type-id='type-id-1625' name='config' filepath='Python/crossinterp.c' line='1824' column='1'/>
+      <parameter type-id='type-id-170' name='maybe_whence' filepath='Python/crossinterp.c' line='1824' column='1'/>
+      <parameter type-id='type-id-1626' name='p_tstate' filepath='Python/crossinterp.c' line='1825' column='1'/>
+      <parameter type-id='type-id-1626' name='p_save_tstate' filepath='Python/crossinterp.c' line='1825' column='1'/>
+      <return type-id='type-id-28'/>
+    </function-decl>
+    <function-decl name='_PyXI_EndInterpreter' mangled-name='_PyXI_EndInterpreter' filepath='Python/crossinterp.c' line='1871' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyXI_EndInterpreter'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/crossinterp.c' line='1871' column='1'/>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/crossinterp.c' line='1872' column='1'/>
+      <parameter type-id='type-id-1626' name='p_save_tstate' filepath='Python/crossinterp.c' line='1872' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_Lookup' mangled-name='_PyCrossInterpreterData_Lookup' filepath='Python/crossinterp_data_lookup.h' line='15' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Lookup'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/crossinterp_data_lookup.h' line='15' column='1'/>
+      <return type-id='type-id-1136'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_RegisterClass' mangled-name='_PyCrossInterpreterData_RegisterClass' filepath='Python/crossinterp_data_lookup.h' line='241' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_RegisterClass'>
+      <parameter type-id='type-id-1' name='cls' filepath='Python/crossinterp_data_lookup.h' line='241' column='1'/>
+      <parameter type-id='type-id-1136' name='getdata' filepath='Python/crossinterp_data_lookup.h' line='242' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyCrossInterpreterData_UnregisterClass' mangled-name='_PyCrossInterpreterData_UnregisterClass' filepath='Python/crossinterp_data_lookup.h' line='273' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_UnregisterClass'>
+      <parameter type-id='type-id-1' name='cls' filepath='Python/crossinterp_data_lookup.h' line='273' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/errors.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='_Py_fopen_obj' mangled-name='_Py_fopen_obj' filepath='./Include/cpython/fileutils.h' line='6' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_fopen_obj'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-56'/>
+    </function-decl>
+    <function-decl name='_PyException_AddNote' filepath='./Include/internal/pycore_pyerrors.h' line='32' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTraceBack_FromFrame' filepath='./Include/internal/pycore_traceback.h' line='89' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-351'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyTraceBack_Print' mangled-name='PyTraceBack_Print' filepath='./Include/traceback.h' line='10' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyTraceBack_Print'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='strerror' filepath='/usr/include/string.h' line='419' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-17'/>
+    </function-decl>
+    <function-decl name='PyErr_GetHandledException' mangled-name='PyErr_GetHandledException' filepath='Python/errors.c' line='586' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_GetHandledException'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyErr_GetExcInfo' mangled-name='PyErr_GetExcInfo' filepath='Python/errors.c' line='606' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_GetExcInfo'>
+      <parameter type-id='type-id-238' name='p_type' filepath='Python/errors.c' line='606' column='1'/>
+      <parameter type-id='type-id-238' name='p_value' filepath='Python/errors.c' line='606' column='1'/>
+      <parameter type-id='type-id-238' name='p_traceback' filepath='Python/errors.c' line='606' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyErr_SetExcInfo' mangled-name='PyErr_SetExcInfo' filepath='Python/errors.c' line='613' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_SetExcInfo'>
+      <parameter type-id='type-id-4' name='type' filepath='Python/errors.c' line='613' column='1'/>
+      <parameter type-id='type-id-4' name='value' filepath='Python/errors.c' line='613' column='1'/>
+      <parameter type-id='type-id-4' name='traceback' filepath='Python/errors.c' line='613' column='1'/>
+      <return type-id='type-id-3'/>
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+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2512' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2512' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2512' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FirePyResumeEvent' mangled-name='_PyMonitoring_FirePyResumeEvent' filepath='Python/instrumentation.c' line='2521' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FirePyResumeEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2521' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2521' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2521' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FirePyReturnEvent' mangled-name='_PyMonitoring_FirePyReturnEvent' filepath='Python/instrumentation.c' line='2532' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FirePyReturnEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2532' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2532' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2532' column='1'/>
+      <parameter type-id='type-id-4' name='retval' filepath='Python/instrumentation.c' line='2533' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FirePyYieldEvent' mangled-name='_PyMonitoring_FirePyYieldEvent' filepath='Python/instrumentation.c' line='2542' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FirePyYieldEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2542' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2542' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2542' column='1'/>
+      <parameter type-id='type-id-4' name='retval' filepath='Python/instrumentation.c' line='2543' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FireCallEvent' mangled-name='_PyMonitoring_FireCallEvent' filepath='Python/instrumentation.c' line='2552' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FireCallEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2552' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2552' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2552' column='1'/>
+      <parameter type-id='type-id-4' name='callable' filepath='Python/instrumentation.c' line='2553' column='1'/>
+      <parameter type-id='type-id-4' name='arg0' filepath='Python/instrumentation.c' line='2553' column='1'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2562' column='1'/>
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+      <parameter type-id='type-id-5' name='lineno' filepath='Python/instrumentation.c' line='2563' column='1'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2578' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2578' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2578' column='1'/>
+      <parameter type-id='type-id-4' name='target_offset' filepath='Python/instrumentation.c' line='2579' column='1'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2588' column='1'/>
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+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2598' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2598' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2598' column='1'/>
+      <parameter type-id='type-id-4' name='retval' filepath='Python/instrumentation.c' line='2599' column='1'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2633' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2633' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FireRaiseEvent' mangled-name='_PyMonitoring_FireRaiseEvent' filepath='Python/instrumentation.c' line='2647' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FireRaiseEvent'>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2647' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2647' column='1'/>
+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2661' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2661' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FireReraiseEvent' mangled-name='_PyMonitoring_FireReraiseEvent' filepath='Python/instrumentation.c' line='2675' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FireReraiseEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2675' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2675' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2675' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FireExceptionHandledEvent' mangled-name='_PyMonitoring_FireExceptionHandledEvent' filepath='Python/instrumentation.c' line='2689' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FireExceptionHandledEvent'>
+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2689' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2689' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2689' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyMonitoring_FirePyUnwindEvent' mangled-name='_PyMonitoring_FirePyUnwindEvent' filepath='Python/instrumentation.c' line='2703' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyMonitoring_FirePyUnwindEvent'>
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+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2703' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2703' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
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+      <parameter type-id='type-id-1690' name='state' filepath='Python/instrumentation.c' line='2717' column='1'/>
+      <parameter type-id='type-id-4' name='codelike' filepath='Python/instrumentation.c' line='2717' column='1'/>
+      <parameter type-id='type-id-1109' name='offset' filepath='Python/instrumentation.c' line='2717' column='1'/>
+      <parameter type-id='type-id-4' name='value' filepath='Python/instrumentation.c' line='2717' column='1'/>
+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-5'/>
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+      <parameter type-id='type-id-4'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-5'/>
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+    <function-decl name='_PyPathConfig_UpdateGlobal' filepath='./Include/internal/pycore_pathconfig.h' line='15' column='1' visibility='default' binding='global' size-in-bits='64'>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-4'/>
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+      <parameter type-id='type-id-238'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-3'/>
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+      <return type-id='type-id-61'/>
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+      <return type-id='type-id-3'/>
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+    <function-decl name='_PyTypes_AfterFork' filepath='./Include/internal/pycore_typeobject.h' line='139' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_get_thread_native_id' mangled-name='PyThread_get_thread_native_id' filepath='./Include/pythread.h' line='28' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_get_thread_native_id'>
+      <return type-id='type-id-2'/>
+    </function-decl>
+    <function-decl name='PyThread_allocate_lock' mangled-name='PyThread_allocate_lock' filepath='./Include/pythread.h' line='31' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_allocate_lock'>
+      <return type-id='type-id-1154'/>
+    </function-decl>
+    <function-decl name='PyThread_free_lock' mangled-name='PyThread_free_lock' filepath='./Include/pythread.h' line='32' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_free_lock'>
+      <parameter type-id='type-id-1154'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_acquire_lock' mangled-name='PyThread_acquire_lock' filepath='./Include/pythread.h' line='33' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_acquire_lock'>
+      <parameter type-id='type-id-1154'/>
+      <parameter type-id='type-id-5'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_release_lock' mangled-name='PyThread_release_lock' filepath='./Include/pythread.h' line='58' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_release_lock'>
+      <parameter type-id='type-id-1154'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_is_created' mangled-name='PyThread_tss_is_created' filepath='./Include/pythread.h' line='96' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_is_created'>
+      <parameter type-id='type-id-1767'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_create' mangled-name='PyThread_tss_create' filepath='./Include/pythread.h' line='97' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_create'>
+      <parameter type-id='type-id-1767'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_delete' mangled-name='PyThread_tss_delete' filepath='./Include/pythread.h' line='98' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_delete'>
+      <parameter type-id='type-id-1767'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_set' mangled-name='PyThread_tss_set' filepath='./Include/pythread.h' line='99' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_set'>
+      <parameter type-id='type-id-1767'/>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_get' mangled-name='PyThread_tss_get' filepath='./Include/pythread.h' line='100' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_get'>
+      <parameter type-id='type-id-1767'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='_PyThreadState_GetCurrent' mangled-name='_PyThreadState_GetCurrent' filepath='Python/pystate.c' line='110' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_GetCurrent'>
+      <return type-id='type-id-27'/>
+    </function-decl>
+    <function-decl name='PyInterpreterState_Clear' mangled-name='PyInterpreterState_Clear' filepath='Python/pystate.c' line='916' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_Clear'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='916' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_IsRunningMain' mangled-name='_PyInterpreterState_IsRunningMain' filepath='Python/pystate.c' line='1084' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_IsRunningMain'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1084' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_FailIfRunningMain' mangled-name='_PyInterpreterState_FailIfRunningMain' filepath='Python/pystate.c' line='1109' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_FailIfRunningMain'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1109' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_GetWhence' mangled-name='_PyInterpreterState_GetWhence' filepath='Python/pystate.c' line='1154' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetWhence'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1154' column='1'/>
+      <return type-id='type-id-183'/>
+    </function-decl>
+    <function-decl name='PyInterpreterState_GetDict' mangled-name='PyInterpreterState_GetDict' filepath='Python/pystate.c' line='1182' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_GetDict'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1182' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_ObjectToID' mangled-name='_PyInterpreterState_ObjectToID' filepath='Python/pystate.c' line='1200' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_ObjectToID'>
+      <parameter type-id='type-id-4' name='idobj' filepath='Python/pystate.c' line='1200' column='1'/>
+      <return type-id='type-id-460'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_GetIDObject' mangled-name='_PyInterpreterState_GetIDObject' filepath='Python/pystate.c' line='1244' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetIDObject'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1244' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_IDInitref' mangled-name='_PyInterpreterState_IDInitref' filepath='Python/pystate.c' line='1259' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_IDInitref'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1259' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_IDIncref' mangled-name='_PyInterpreterState_IDIncref' filepath='Python/pystate.c' line='1276' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_IDIncref'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1276' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_IDDecref' mangled-name='_PyInterpreterState_IDDecref' filepath='Python/pystate.c' line='1290' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_IDDecref'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1290' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_RequiresIDRef' mangled-name='_PyInterpreterState_RequiresIDRef' filepath='Python/pystate.c' line='1313' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_RequiresIDRef'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1313' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_RequireIDRef' mangled-name='_PyInterpreterState_RequireIDRef' filepath='Python/pystate.c' line='1319' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_RequireIDRef'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1319' column='1'/>
+      <parameter type-id='type-id-5' name='required' filepath='Python/pystate.c' line='1319' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_LookUpIDObject' mangled-name='_PyInterpreterState_LookUpIDObject' filepath='Python/pystate.c' line='1386' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_LookUpIDObject'>
+      <parameter type-id='type-id-4' name='requested_id' filepath='Python/pystate.c' line='1386' column='1'/>
+      <return type-id='type-id-28'/>
+    </function-decl>
+    <function-decl name='_PyThreadState_Prealloc' mangled-name='_PyThreadState_Prealloc' filepath='Python/pystate.c' line='1637' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Prealloc'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='1637' column='1'/>
+      <return type-id='type-id-27'/>
+    </function-decl>
+    <function-decl name='_PyThreadState_Init' mangled-name='_PyThreadState_Init' filepath='Python/pystate.c' line='1645' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Init'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/pystate.c' line='1645' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThreadState_DeleteCurrent' mangled-name='PyThreadState_DeleteCurrent' filepath='Python/pystate.c' line='1867' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_DeleteCurrent'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyThreadState_GetDict' mangled-name='_PyThreadState_GetDict' filepath='Python/pystate.c' line='1944' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_GetDict'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/pystate.c' line='1944' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyThreadState_GetID' mangled-name='PyThreadState_GetID' filepath='Python/pystate.c' line='1993' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetID'>
+      <parameter type-id='type-id-27' name='tstate' filepath='Python/pystate.c' line='1993' column='1'/>
+      <return type-id='type-id-108'/>
+    </function-decl>
+    <function-decl name='PyThreadState_SetAsyncExc' mangled-name='PyThreadState_SetAsyncExc' filepath='Python/pystate.c' line='2374' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_SetAsyncExc'>
+      <parameter type-id='type-id-2' name='id' filepath='Python/pystate.c' line='2374' column='1'/>
+      <parameter type-id='type-id-4' name='exc' filepath='Python/pystate.c' line='2374' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThreadState_GetUnchecked' mangled-name='PyThreadState_GetUnchecked' filepath='Python/pystate.c' line='2415' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetUnchecked'>
+      <return type-id='type-id-27'/>
+    </function-decl>
+    <function-decl name='PyInterpreterState_Main' mangled-name='PyInterpreterState_Main' filepath='Python/pystate.c' line='2493' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_Main'>
+      <return type-id='type-id-28'/>
+    </function-decl>
+    <function-decl name='_PyThread_CurrentFrames' mangled-name='_PyThread_CurrentFrames' filepath='Python/pystate.c' line='2524' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThread_CurrentFrames'>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_GetEvalFrameFunc' mangled-name='_PyInterpreterState_GetEvalFrameFunc' filepath='Python/pystate.c' line='2854' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetEvalFrameFunc'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='2854' column='1'/>
+      <return type-id='type-id-1032'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_SetEvalFrameFunc' mangled-name='_PyInterpreterState_SetEvalFrameFunc' filepath='Python/pystate.c' line='2864' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_SetEvalFrameFunc'>
+      <parameter type-id='type-id-28' name='interp' filepath='Python/pystate.c' line='2864' column='1'/>
+      <parameter type-id='type-id-1032' name='eval_frame' filepath='Python/pystate.c' line='2865' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='_PyInterpreterState_GetConfigCopy' mangled-name='_PyInterpreterState_GetConfigCopy' filepath='Python/pystate.c' line='2891' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetConfigCopy'>
+      <parameter type-id='type-id-60' name='config' filepath='Python/pystate.c' line='2891' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/pystrcmp.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='PyOS_mystricmp' mangled-name='PyOS_mystricmp' filepath='Python/pystrcmp.c' line='22' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyOS_mystricmp'>
+      <parameter type-id='type-id-6' name='s1' filepath='Python/pystrcmp.c' line='22' column='1'/>
+      <parameter type-id='type-id-6' name='s2' filepath='Python/pystrcmp.c' line='22' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/pystrhex.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='_Py_strhex' mangled-name='_Py_strhex' filepath='Python/pystrhex.c' line='146' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_strhex'>
+      <parameter type-id='type-id-6' name='argbuf' filepath='Python/pystrhex.c' line='146' column='1'/>
+      <parameter type-id='type-id-256' name='arglen' filepath='Python/pystrhex.c' line='146' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_Py_strhex_bytes_with_sep' mangled-name='_Py_strhex_bytes_with_sep' filepath='Python/pystrhex.c' line='168' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_Py_strhex_bytes_with_sep'>
+      <parameter type-id='type-id-6' name='argbuf' filepath='Python/pystrhex.c' line='168' column='1'/>
+      <parameter type-id='type-id-256' name='arglen' filepath='Python/pystrhex.c' line='168' column='1'/>
+      <parameter type-id='type-id-4' name='sep' filepath='Python/pystrhex.c' line='169' column='1'/>
+      <parameter type-id='type-id-271' name='bytes_per_group' filepath='Python/pystrhex.c' line='169' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/pythonrun.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='_PyImport_GetImportlibExternalLoader' filepath='./Include/internal/pycore_import.h' line='151' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-28'/>
+      <parameter type-id='type-id-6'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyParser_ASTFromString' filepath='./Include/internal/pycore_parser.h' line='63' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-209'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-574'/>
+    </function-decl>
+    <function-decl name='_PyParser_ASTFromFile' filepath='./Include/internal/pycore_parser.h' line='70' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-56'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-209'/>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-574'/>
+    </function-decl>
+    <function-decl name='_PyParser_InteractiveASTFromFile' filepath='./Include/internal/pycore_parser.h' line='80' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-56'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-5'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-209'/>
+      <parameter type-id='type-id-177'/>
+      <parameter type-id='type-id-238'/>
+      <parameter type-id='type-id-679'/>
+      <return type-id='type-id-574'/>
+    </function-decl>
+    <function-decl name='_Py_FdIsInteractive' filepath='./Include/internal/pycore_pylifecycle.h' line='93' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-56'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTraceBack_Print' filepath='./Include/internal/pycore_traceback.h' line='98' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter type-id='type-id-4'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='rewind' filepath='/usr/include/stdio.h' line='723' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-56'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyRun_InteractiveLoopFlags' mangled-name='PyRun_InteractiveLoopFlags' filepath='Python/pythonrun.c' line='161' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_InteractiveLoopFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='161' column='1'/>
+      <parameter type-id='type-id-6' name='filename' filepath='Python/pythonrun.c' line='161' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='161' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_InteractiveOneObject' mangled-name='PyRun_InteractiveOneObject' filepath='Python/pythonrun.c' line='326' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_InteractiveOneObject'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='326' column='1'/>
+      <parameter type-id='type-id-4' name='filename' filepath='Python/pythonrun.c' line='326' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='326' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_InteractiveOneFlags' mangled-name='PyRun_InteractiveOneFlags' filepath='Python/pythonrun.c' line='339' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_InteractiveOneFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='339' column='1'/>
+      <parameter type-id='type-id-6' name='filename_str' filepath='Python/pythonrun.c' line='339' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='339' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_SimpleFileExFlags' mangled-name='PyRun_SimpleFileExFlags' filepath='Python/pythonrun.c' line='517' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_SimpleFileExFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='517' column='1'/>
+      <parameter type-id='type-id-6' name='filename' filepath='Python/pythonrun.c' line='517' column='1'/>
+      <parameter type-id='type-id-5' name='closeit' filepath='Python/pythonrun.c' line='517' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='518' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_SimpleStringFlags' mangled-name='PyRun_SimpleStringFlags' filepath='Python/pythonrun.c' line='561' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_SimpleStringFlags'>
+      <parameter type-id='type-id-6' name='command' filepath='Python/pythonrun.c' line='561' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='561' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyErr_Display' mangled-name='PyErr_Display' filepath='Python/pythonrun.c' line='1166' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyErr_Display'>
+      <parameter type-id='type-id-4' name='unused' filepath='Python/pythonrun.c' line='1166' column='1'/>
+      <parameter type-id='type-id-4' name='value' filepath='Python/pythonrun.c' line='1166' column='1'/>
+      <parameter type-id='type-id-4' name='tb' filepath='Python/pythonrun.c' line='1166' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyRun_FileExFlags' mangled-name='PyRun_FileExFlags' filepath='Python/pythonrun.c' line='1267' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_FileExFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1267' column='1'/>
+      <parameter type-id='type-id-6' name='filename' filepath='Python/pythonrun.c' line='1267' column='1'/>
+      <parameter type-id='type-id-5' name='start' filepath='Python/pythonrun.c' line='1267' column='1'/>
+      <parameter type-id='type-id-4' name='globals' filepath='Python/pythonrun.c' line='1267' column='1'/>
+      <parameter type-id='type-id-4' name='locals' filepath='Python/pythonrun.c' line='1268' column='1'/>
+      <parameter type-id='type-id-5' name='closeit' filepath='Python/pythonrun.c' line='1268' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='1268' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='Py_CompileStringExFlags' mangled-name='Py_CompileStringExFlags' filepath='Python/pythonrun.c' line='1501' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_CompileStringExFlags'>
+      <parameter type-id='type-id-6' name='str' filepath='Python/pythonrun.c' line='1501' column='1'/>
+      <parameter type-id='type-id-6' name='filename_str' filepath='Python/pythonrun.c' line='1501' column='1'/>
+      <parameter type-id='type-id-5' name='start' filepath='Python/pythonrun.c' line='1501' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='1502' column='1'/>
+      <parameter type-id='type-id-5' name='optimize' filepath='Python/pythonrun.c' line='1502' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_AnyFile' mangled-name='PyRun_AnyFile' filepath='Python/pythonrun.c' line='1603' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_AnyFile'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1603' column='1'/>
+      <parameter type-id='type-id-6' name='name' filepath='Python/pythonrun.c' line='1603' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_AnyFileEx' mangled-name='PyRun_AnyFileEx' filepath='Python/pythonrun.c' line='1610' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_AnyFileEx'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1610' column='1'/>
+      <parameter type-id='type-id-6' name='name' filepath='Python/pythonrun.c' line='1610' column='1'/>
+      <parameter type-id='type-id-5' name='closeit' filepath='Python/pythonrun.c' line='1610' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_AnyFileFlags' mangled-name='PyRun_AnyFileFlags' filepath='Python/pythonrun.c' line='1617' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_AnyFileFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1617' column='1'/>
+      <parameter type-id='type-id-6' name='name' filepath='Python/pythonrun.c' line='1617' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='1617' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_File' mangled-name='PyRun_File' filepath='Python/pythonrun.c' line='1624' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_File'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1624' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1624' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1624' column='1'/>
+      <parameter type-id='type-id-4' name='g' filepath='Python/pythonrun.c' line='1624' column='1'/>
+      <parameter type-id='type-id-4' name='l' filepath='Python/pythonrun.c' line='1624' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_FileEx' mangled-name='PyRun_FileEx' filepath='Python/pythonrun.c' line='1631' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_FileEx'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <parameter type-id='type-id-4' name='g' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <parameter type-id='type-id-4' name='l' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <parameter type-id='type-id-5' name='c' filepath='Python/pythonrun.c' line='1631' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_FileFlags' mangled-name='PyRun_FileFlags' filepath='Python/pythonrun.c' line='1638' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_FileFlags'>
+      <parameter type-id='type-id-56' name='fp' filepath='Python/pythonrun.c' line='1638' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1638' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1638' column='1'/>
+      <parameter type-id='type-id-4' name='g' filepath='Python/pythonrun.c' line='1638' column='1'/>
+      <parameter type-id='type-id-4' name='l' filepath='Python/pythonrun.c' line='1638' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='1639' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_SimpleFile' mangled-name='PyRun_SimpleFile' filepath='Python/pythonrun.c' line='1646' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_SimpleFile'>
+      <parameter type-id='type-id-56' name='f' filepath='Python/pythonrun.c' line='1646' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1646' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_SimpleFileEx' mangled-name='PyRun_SimpleFileEx' filepath='Python/pythonrun.c' line='1653' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_SimpleFileEx'>
+      <parameter type-id='type-id-56' name='f' filepath='Python/pythonrun.c' line='1653' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1653' column='1'/>
+      <parameter type-id='type-id-5' name='c' filepath='Python/pythonrun.c' line='1653' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_String' mangled-name='PyRun_String' filepath='Python/pythonrun.c' line='1661' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_String'>
+      <parameter type-id='type-id-6' name='str' filepath='Python/pythonrun.c' line='1661' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1661' column='1'/>
+      <parameter type-id='type-id-4' name='g' filepath='Python/pythonrun.c' line='1661' column='1'/>
+      <parameter type-id='type-id-4' name='l' filepath='Python/pythonrun.c' line='1661' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_SimpleString' mangled-name='PyRun_SimpleString' filepath='Python/pythonrun.c' line='1668' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_SimpleString'>
+      <parameter type-id='type-id-6' name='s' filepath='Python/pythonrun.c' line='1668' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='Py_CompileString' mangled-name='Py_CompileString' filepath='Python/pythonrun.c' line='1675' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_CompileString'>
+      <parameter type-id='type-id-6' name='str' filepath='Python/pythonrun.c' line='1675' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1675' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1675' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='Py_CompileStringFlags' mangled-name='Py_CompileStringFlags' filepath='Python/pythonrun.c' line='1682' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='Py_CompileStringFlags'>
+      <parameter type-id='type-id-6' name='str' filepath='Python/pythonrun.c' line='1682' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1682' column='1'/>
+      <parameter type-id='type-id-5' name='s' filepath='Python/pythonrun.c' line='1682' column='1'/>
+      <parameter type-id='type-id-209' name='flags' filepath='Python/pythonrun.c' line='1683' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='PyRun_InteractiveOne' mangled-name='PyRun_InteractiveOne' filepath='Python/pythonrun.c' line='1690' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_InteractiveOne'>
+      <parameter type-id='type-id-56' name='f' filepath='Python/pythonrun.c' line='1690' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1690' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyRun_InteractiveLoop' mangled-name='PyRun_InteractiveLoop' filepath='Python/pythonrun.c' line='1697' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyRun_InteractiveLoop'>
+      <parameter type-id='type-id-56' name='f' filepath='Python/pythonrun.c' line='1697' column='1'/>
+      <parameter type-id='type-id-6' name='p' filepath='Python/pythonrun.c' line='1697' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/pytime.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <class-decl name='_Py_clock_info_t' size-in-bits='192' is-struct='yes' naming-typedef-id='type-id-1770' visibility='default' filepath='./Include/internal/pycore_time.h' line='245' column='1' id='type-id-1771'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='implementation' type-id='type-id-6' visibility='default' filepath='./Include/internal/pycore_time.h' line='246' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='64'>
+        <var-decl name='monotonic' type-id='type-id-5' visibility='default' filepath='./Include/internal/pycore_time.h' line='247' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='96'>
+        <var-decl name='adjustable' type-id='type-id-5' visibility='default' filepath='./Include/internal/pycore_time.h' line='248' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='128'>
+        <var-decl name='resolution' type-id='type-id-172' visibility='default' filepath='./Include/internal/pycore_time.h' line='249' column='1'/>
+      </data-member>
+    </class-decl>
+    <typedef-decl name='_Py_clock_info_t' type-id='type-id-1771' filepath='./Include/internal/pycore_time.h' line='250' column='1' id='type-id-1770'/>
+    <class-decl name='tm' size-in-bits='448' is-struct='yes' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='7' column='1' id='type-id-218'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='tm_sec' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='9' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='32'>
+        <var-decl name='tm_min' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='10' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='64'>
+        <var-decl name='tm_hour' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='11' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='96'>
+        <var-decl name='tm_mday' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='12' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='128'>
+        <var-decl name='tm_mon' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='13' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='160'>
+        <var-decl name='tm_year' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='14' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='192'>
+        <var-decl name='tm_wday' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='15' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='224'>
+        <var-decl name='tm_yday' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='16' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='256'>
+        <var-decl name='tm_isdst' type-id='type-id-5' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='17' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='320'>
+        <var-decl name='tm_gmtoff' type-id='type-id-183' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='20' column='1'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='384'>
+        <var-decl name='tm_zone' type-id='type-id-6' visibility='default' filepath='/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h' line='21' column='1'/>
+      </data-member>
+    </class-decl>
+    <typedef-decl name='time_t' type-id='type-id-482' filepath='/usr/include/x86_64-linux-gnu/bits/types/time_t.h' line='10' column='1' id='type-id-225'/>
+    <pointer-type-def type-id='type-id-1770' size-in-bits='64' id='type-id-223'/>
+    <qualified-type-def type-id='type-id-225' const='yes' id='type-id-1772'/>
+    <pointer-type-def type-id='type-id-1772' size-in-bits='64' id='type-id-1773'/>
+    <qualified-type-def type-id='type-id-1773' restrict='yes' id='type-id-1774'/>
+    <pointer-type-def type-id='type-id-225' size-in-bits='64' id='type-id-224'/>
+    <pointer-type-def type-id='type-id-198' size-in-bits='64' id='type-id-222'/>
+    <pointer-type-def type-id='type-id-218' size-in-bits='64' id='type-id-226'/>
+    <qualified-type-def type-id='type-id-226' restrict='yes' id='type-id-1775'/>
+    <function-decl name='gmtime_r' filepath='/usr/include/time.h' line='154' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1774'/>
+      <parameter type-id='type-id-1775'/>
+      <return type-id='type-id-226'/>
+    </function-decl>
+    <function-decl name='localtime_r' filepath='/usr/include/time.h' line='159' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-1774'/>
+      <parameter type-id='type-id-1775'/>
+      <return type-id='type-id-226'/>
+    </function-decl>
+    <function-decl name='clock_getres' filepath='/usr/include/time.h' line='276' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-227'/>
+      <parameter type-id='type-id-178'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyLong_AsTime_t' mangled-name='_PyLong_AsTime_t' filepath='Python/pytime.c' line='210' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyLong_AsTime_t'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/pytime.c' line='210' column='1'/>
+      <return type-id='type-id-225'/>
+    </function-decl>
+    <function-decl name='_PyLong_FromTime_t' mangled-name='_PyLong_FromTime_t' filepath='Python/pytime.c' line='230' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyLong_FromTime_t'>
+      <parameter type-id='type-id-225' name='t' filepath='Python/pytime.c' line='230' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyTime_ObjectToTime_t' mangled-name='_PyTime_ObjectToTime_t' filepath='Python/pytime.c' line='398' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTime_ObjectToTime_t'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/pytime.c' line='398' column='1'/>
+      <parameter type-id='type-id-224' name='sec' filepath='Python/pytime.c' line='398' column='1'/>
+      <parameter type-id='type-id-173' name='round' filepath='Python/pytime.c' line='398' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTime_ObjectToTimespec' mangled-name='_PyTime_ObjectToTimespec' filepath='Python/pytime.c' line='433' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTime_ObjectToTimespec'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/pytime.c' line='433' column='1'/>
+      <parameter type-id='type-id-224' name='sec' filepath='Python/pytime.c' line='433' column='1'/>
+      <parameter type-id='type-id-170' name='nsec' filepath='Python/pytime.c' line='433' column='1'/>
+      <parameter type-id='type-id-173' name='round' filepath='Python/pytime.c' line='434' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTime_ObjectToTimeval' mangled-name='_PyTime_ObjectToTimeval' filepath='Python/pytime.c' line='441' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTime_ObjectToTimeval'>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/pytime.c' line='441' column='1'/>
+      <parameter type-id='type-id-224' name='sec' filepath='Python/pytime.c' line='441' column='1'/>
+      <parameter type-id='type-id-170' name='usec' filepath='Python/pytime.c' line='441' column='1'/>
+      <parameter type-id='type-id-173' name='round' filepath='Python/pytime.c' line='442' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTime_FromSeconds' mangled-name='_PyTime_FromSeconds' filepath='Python/pytime.c' line='449' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTime_FromSeconds'>
+      <parameter type-id='type-id-5' name='seconds' filepath='Python/pytime.c' line='449' column='1'/>
+      <return type-id='type-id-213'/>
+    </function-decl>
+    <function-decl name='_PyTime_FromLong' mangled-name='_PyTime_FromLong' filepath='Python/pytime.c' line='474' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTime_FromLong'>
+      <parameter type-id='type-id-174' name='tp' filepath='Python/pytime.c' line='474' column='1'/>
+      <parameter type-id='type-id-4' name='obj' filepath='Python/pytime.c' line='474' column='1'/>
+      <return type-id='type-id-5'/>
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+      <return type-id='type-id-480'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_alloc' mangled-name='PyThread_tss_alloc' filepath='Python/thread.c' line='185' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_alloc'>
+      <return type-id='type-id-1767'/>
+    </function-decl>
+    <function-decl name='PyThread_tss_free' mangled-name='PyThread_tss_free' filepath='Python/thread.c' line='196' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_tss_free'>
+      <parameter type-id='type-id-1767' name='key' filepath='Python/thread.c' line='196' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_start_joinable_thread' mangled-name='PyThread_start_joinable_thread' filepath='Python/thread_pthread.h' line='311' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_start_joinable_thread'>
+      <parameter type-id='type-id-510' name='func' filepath='Python/thread_pthread.h' line='311' column='1'/>
+      <parameter type-id='type-id-30' name='arg' filepath='Python/thread_pthread.h' line='311' column='1'/>
+      <parameter type-id='type-id-1783' name='ident' filepath='Python/thread_pthread.h' line='312' column='1'/>
+      <parameter type-id='type-id-1782' name='handle' filepath='Python/thread_pthread.h' line='312' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_start_new_thread' mangled-name='PyThread_start_new_thread' filepath='Python/thread_pthread.h' line='325' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_start_new_thread'>
+      <parameter type-id='type-id-510' name='func' filepath='Python/thread_pthread.h' line='325' column='1'/>
+      <parameter type-id='type-id-30' name='arg' filepath='Python/thread_pthread.h' line='325' column='1'/>
+      <return type-id='type-id-2'/>
+    </function-decl>
+    <function-decl name='PyThread_join_thread' mangled-name='PyThread_join_thread' filepath='Python/thread_pthread.h' line='340' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_join_thread'>
+      <parameter type-id='type-id-1779' name='th' filepath='Python/thread_pthread.h' line='340' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_detach_thread' mangled-name='PyThread_detach_thread' filepath='Python/thread_pthread.h' line='345' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_detach_thread'>
+      <parameter type-id='type-id-1779' name='th' filepath='Python/thread_pthread.h' line='345' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_acquire_lock_timed' mangled-name='PyThread_acquire_lock_timed' filepath='Python/thread_pthread.h' line='482' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_acquire_lock_timed'>
+      <parameter type-id='type-id-1154' name='lock' filepath='Python/thread_pthread.h' line='482' column='1'/>
+      <parameter type-id='type-id-377' name='microseconds' filepath='Python/thread_pthread.h' line='482' column='1'/>
+      <parameter type-id='type-id-5' name='intr_flag' filepath='Python/thread_pthread.h' line='483' column='1'/>
+      <return type-id='type-id-480'/>
+    </function-decl>
+    <function-decl name='PyThread_create_key' mangled-name='PyThread_create_key' filepath='Python/thread_pthread.h' line='867' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_create_key'>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_delete_key' mangled-name='PyThread_delete_key' filepath='Python/thread_pthread.h' line='887' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_delete_key'>
+      <parameter type-id='type-id-5' name='key' filepath='Python/thread_pthread.h' line='887' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_delete_key_value' mangled-name='PyThread_delete_key_value' filepath='Python/thread_pthread.h' line='895' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_delete_key_value'>
+      <parameter type-id='type-id-5' name='key' filepath='Python/thread_pthread.h' line='895' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-decl name='PyThread_set_key_value' mangled-name='PyThread_set_key_value' filepath='Python/thread_pthread.h' line='903' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_set_key_value'>
+      <parameter type-id='type-id-5' name='key' filepath='Python/thread_pthread.h' line='903' column='1'/>
+      <parameter type-id='type-id-30' name='value' filepath='Python/thread_pthread.h' line='903' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyThread_get_key_value' mangled-name='PyThread_get_key_value' filepath='Python/thread_pthread.h' line='914' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_get_key_value'>
+      <parameter type-id='type-id-5' name='key' filepath='Python/thread_pthread.h' line='914' column='1'/>
+      <return type-id='type-id-30'/>
+    </function-decl>
+    <function-decl name='PyThread_ReInitTLS' mangled-name='PyThread_ReInitTLS' filepath='Python/thread_pthread.h' line='925' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThread_ReInitTLS'>
+      <return type-id='type-id-3'/>
+    </function-decl>
+    <function-type size-in-bits='64' id='type-id-1795'>
+      <parameter type-id='type-id-30'/>
+      <return type-id='type-id-30'/>
+    </function-type>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/traceback.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='_PyObject_CallMethodFormat' filepath='./Include/internal/pycore_call.h' line='54' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='type-id-27'/>
+      <parameter type-id='type-id-4'/>
+      <parameter type-id='type-id-6'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+    <function-decl name='_PyGILState_GetInterpreterStateUnsafe' filepath='./Include/internal/pycore_pystate.h' line='280' column='1' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='type-id-28'/>
+    </function-decl>
+    <var-decl name='PyTraceBack_Type' type-id='type-id-266' mangled-name='PyTraceBack_Type' visibility='default' filepath='./Include/traceback.h' line='13' column='1' elf-symbol-id='PyTraceBack_Type'/>
+    <function-decl name='_PyTraceback_Add' mangled-name='_PyTraceback_Add' filepath='Python/traceback.c' line='280' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTraceback_Add'>
+      <parameter type-id='type-id-6' name='funcname' filepath='Python/traceback.c' line='280' column='1'/>
+      <parameter type-id='type-id-6' name='filename' filepath='Python/traceback.c' line='280' column='1'/>
+      <parameter type-id='type-id-5' name='lineno' filepath='Python/traceback.c' line='280' column='1'/>
+      <return type-id='type-id-3'/>
+    </function-decl>
+  </abi-instr>
+  <abi-instr address-size='64' path='Python/tracemalloc.c' comp-dir-path='/home/runner/work/cpython/cpython' language='LANG_C11'>
+    <function-decl name='PyTraceMalloc_Track' mangled-name='PyTraceMalloc_Track' filepath='Python/tracemalloc.c' line='1307' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyTraceMalloc_Track'>
+      <parameter type-id='type-id-101' name='domain' filepath='Python/tracemalloc.c' line='1307' column='1'/>
+      <parameter type-id='type-id-427' name='ptr' filepath='Python/tracemalloc.c' line='1307' column='1'/>
+      <parameter type-id='type-id-21' name='size' filepath='Python/tracemalloc.c' line='1308' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='PyTraceMalloc_Untrack' mangled-name='PyTraceMalloc_Untrack' filepath='Python/tracemalloc.c' line='1330' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyTraceMalloc_Untrack'>
+      <parameter type-id='type-id-101' name='domain' filepath='Python/tracemalloc.c' line='1330' column='1'/>
+      <parameter type-id='type-id-427' name='ptr' filepath='Python/tracemalloc.c' line='1330' column='1'/>
+      <return type-id='type-id-5'/>
+    </function-decl>
+    <function-decl name='_PyTraceMalloc_GetTraceback' mangled-name='_PyTraceMalloc_GetTraceback' filepath='Python/tracemalloc.c' line='1396' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyTraceMalloc_GetTraceback'>
+      <parameter type-id='type-id-101' name='domain' filepath='Python/tracemalloc.c' line='1396' column='1'/>
+      <parameter type-id='type-id-427' name='ptr' filepath='Python/tracemalloc.c' line='1396' column='1'/>
+      <return type-id='type-id-4'/>
+    </function-decl>
+  </abi-instr>
+</abi-corpus>
diff --git a/Doc/data/refcounts.dat b/Doc/data/refcounts.dat
index 62a96146d605ff..99f4d59b558eae 100644
--- a/Doc/data/refcounts.dat
+++ b/Doc/data/refcounts.dat
@@ -180,7 +180,7 @@ PyCapsule_IsValid:const char*:name::
 PyCapsule_New:PyObject*::+1:
 PyCapsule_New:void*:pointer::
 PyCapsule_New:const char *:name::
-PyCapsule_New::void (* destructor)(PyObject* )::
+PyCapsule_New:void (*)(PyObject *):destructor::
 
 PyCapsule_SetContext:int:::
 PyCapsule_SetContext:PyObject*:self:0:
@@ -349,11 +349,11 @@ PyComplex_CheckExact:int:::
 PyComplex_CheckExact:PyObject*:p:0:
 
 PyComplex_FromCComplex:PyObject*::+1:
-PyComplex_FromCComplex::Py_complex v::
+PyComplex_FromCComplex:Py_complex:v::
 
 PyComplex_FromDoubles:PyObject*::+1:
-PyComplex_FromDoubles::double real::
-PyComplex_FromDoubles::double imag::
+PyComplex_FromDoubles:double:real::
+PyComplex_FromDoubles:double:imag::
 
 PyComplex_ImagAsDouble:double:::
 PyComplex_ImagAsDouble:PyObject*:op:0:
@@ -622,7 +622,9 @@ PyErr_GetExcInfo:PyObject**:pvalue:+1:
 PyErr_GetExcInfo:PyObject**:ptraceback:+1:
 
 PyErr_GetRaisedException:PyObject*::+1:
-PyErr_SetRaisedException::::
+
+PyErr_SetRaisedException:void:::
+PyErr_SetRaisedException:PyObject *:exc:0:stolen
 
 PyErr_GivenExceptionMatches:int:::
 PyErr_GivenExceptionMatches:PyObject*:given:0:
@@ -642,9 +644,9 @@ PyErr_NewExceptionWithDoc:PyObject*:dict:0:
 PyErr_NoMemory:PyObject*::null:
 
 PyErr_NormalizeException:void:::
-PyErr_NormalizeException:PyObject**:exc::???
-PyErr_NormalizeException:PyObject**:val::???
-PyErr_NormalizeException:PyObject**:tb::???
+PyErr_NormalizeException:PyObject**:exc:+1:???
+PyErr_NormalizeException:PyObject**:val:+1:???
+PyErr_NormalizeException:PyObject**:tb:+1:???
 
 PyErr_Occurred:PyObject*::0:
 
@@ -790,6 +792,12 @@ PyEval_GetGlobals:PyObject*::0:
 
 PyEval_GetFrame:PyObject*::0:
 
+PyEval_GetFrameBuiltins:PyObject*::+1:
+
+PyEval_GetFrameLocals:PyObject*::+1:
+
+PyEval_GetFrameGlobals:PyObject*::+1:
+
 PyEval_GetFuncDesc:const char*:::
 PyEval_GetFuncDesc:PyObject*:func:0:
 
@@ -916,6 +924,32 @@ PyFloat_FromString:PyObject*:str:0:
 PyFloat_GetInfo:PyObject*::+1:
 PyFloat_GetInfo::void::
 
+PyFrame_GetBack:PyObject*::+1:
+PyFrame_GetBack:PyFrameObject*:frame:0:
+
+PyFrame_GetBuiltins:PyObject*::+1:
+PyFrame_GetBuiltins:PyFrameObject*:frame:0:
+
+PyFrame_GetCode:PyObject*::+1:
+PyFrame_GetCode:PyFrameObject*:frame:0:
+
+PyFrame_GetGenerator:PyObject*::+1:
+PyFrame_GetGenerator:PyFrameObject*:frame:0:
+
+PyFrame_GetGlobals:PyObject*::+1:
+PyFrame_GetGlobals:PyFrameObject*:frame:0:
+
+PyFrame_GetLocals:PyObject*::+1:
+PyFrame_GetLocals:PyFrameObject*:frame:0:
+
+PyFrame_GetVar:PyObject*::+1:
+PyFrame_GetVar:PyFrameObject*:frame:0:
+PyFrame_GetVar:PyObject*:name:0:
+
+PyFrame_GetVarString:PyObject*::+1:
+PyFrame_GetVarString:PyFrameObject*:frame:0:
+PyFrame_GetVarString:const char*:name::
+
 PyFrozenSet_Check:int:::
 PyFrozenSet_Check:PyObject*:p:0:
 
@@ -1269,7 +1303,7 @@ PyMapping_GetItemString:const char*:key::
 
 PyMapping_HasKey:int:::
 PyMapping_HasKey:PyObject*:o:0:
-PyMapping_HasKey:PyObject*:key::
+PyMapping_HasKey:PyObject*:key:0:
 
 PyMapping_HasKeyString:int:::
 PyMapping_HasKeyString:PyObject*:o:0:
@@ -1429,7 +1463,7 @@ PyModule_GetState:void*:::
 PyModule_GetState:PyObject*:module:0:
 
 PyModule_New:PyObject*::+1:
-PyModule_New::char* name::
+PyModule_New:char*:name::
 
 PyModule_NewObject:PyObject*::+1:
 PyModule_NewObject:PyObject*:name:+1:
@@ -1439,7 +1473,7 @@ PyModule_SetDocString:PyObject*:module:0:
 PyModule_SetDocString:const char*:docstring::
 
 PyModuleDef_Init:PyObject*::0:
-PyModuleDef_Init:PyModuleDef*:def:0:
+PyModuleDef_Init:PyModuleDef*:def::
 
 PyNumber_Absolute:PyObject*::+1:
 PyNumber_Absolute:PyObject*:o:0:
@@ -1802,6 +1836,9 @@ PyObject_RichCompareBool:PyObject*:o1:0:
 PyObject_RichCompareBool:PyObject*:o2:0:
 PyObject_RichCompareBool:int:opid::
 
+PyObject_SelfIter:PyObject*::+1:
+PyObject_SelfIter:PyObject*:obj:0:
+
 PyObject_SetAttr:int:::
 PyObject_SetAttr:PyObject*:o:0:
 PyObject_SetAttr:PyObject*:attr_name:0:
@@ -1939,10 +1976,10 @@ PyRun_StringFlags:PyObject*:locals:0:
 PyRun_StringFlags:PyCompilerFlags*:flags::
 
 PySeqIter_Check:int:::
-PySeqIter_Check::op::
+PySeqIter_Check:PyObject *:op:0:
 
 PySeqIter_New:PyObject*::+1:
-PySeqIter_New:PyObject*:seq::
+PySeqIter_New:PyObject*:seq:0:
 
 PySequence_Check:int:::
 PySequence_Check:PyObject*:o:0:
@@ -2382,7 +2419,7 @@ PyUnicode_GET_DATA_SIZE:PyObject*:o:0:
 PyUnicode_KIND:int:::
 PyUnicode_KIND:PyObject*:o:0:
 
-PyUnicode_MAX_CHAR_VALUE::::
+PyUnicode_MAX_CHAR_VALUE:Py_UCS4:::
 PyUnicode_MAX_CHAR_VALUE:PyObject*:o:0:
 
 Py_UNICODE_ISALNUM:int:::
@@ -2449,7 +2486,7 @@ PyUnicode_FromWideChar:const wchar_t*:w::
 PyUnicode_FromWideChar:Py_ssize_t:size::
 
 PyUnicode_AsWideChar:Py_ssize_t:::
-PyUnicode_AsWideChar:PyObject*:*unicode:0:
+PyUnicode_AsWideChar:PyObject*:unicode:0:
 PyUnicode_AsWideChar:wchar_t*:w::
 PyUnicode_AsWideChar:Py_ssize_t:size::
 
@@ -2502,7 +2539,7 @@ PyUnicode_AsUTF8String:PyObject*:unicode:0:
 
 PyUnicode_AsUTF8AndSize:const char*:::
 PyUnicode_AsUTF8AndSize:PyObject*:unicode:0:
-PyUnicode_AsUTF8AndSize:Py_ssize_t*:size:0:
+PyUnicode_AsUTF8AndSize:Py_ssize_t*:size::
 
 PyUnicode_AsUTF8:const char*:::
 PyUnicode_AsUTF8:PyObject*:unicode:0:
@@ -2825,13 +2862,13 @@ PyUnicodeDecodeError_SetStart:PyObject*:exc:0:
 PyUnicodeDecodeError_SetStart:Py_ssize_t:start::
 
 PyWeakref_Check:int:::
-PyWeakref_Check:PyObject*:ob::
+PyWeakref_Check:PyObject*:ob:0:
 
 PyWeakref_CheckProxy:int:::
-PyWeakref_CheckProxy:PyObject*:ob::
+PyWeakref_CheckProxy:PyObject*:ob:0:
 
 PyWeakref_CheckRef:int:::
-PyWeakref_CheckRef:PyObject*:ob::
+PyWeakref_CheckRef:PyObject*:ob:0:
 
 PyWeakref_GET_OBJECT:PyObject*::0:
 PyWeakref_GET_OBJECT:PyObject*:ref:0:
diff --git a/Doc/data/stable_abi.dat b/Doc/data/stable_abi.dat
index 76a035f194d911..75bc5ea94567eb 100644
--- a/Doc/data/stable_abi.dat
+++ b/Doc/data/stable_abi.dat
@@ -1,888 +1,887 @@
 role,name,added,ifdef_note,struct_abi_kind
 macro,PY_VECTORCALL_ARGUMENTS_OFFSET,3.12,,
-function,PyAIter_Check,3.10,,
-function,PyArg_Parse,3.2,,
-function,PyArg_ParseTuple,3.2,,
-function,PyArg_ParseTupleAndKeywords,3.2,,
-function,PyArg_UnpackTuple,3.2,,
-function,PyArg_VaParse,3.2,,
-function,PyArg_VaParseTupleAndKeywords,3.2,,
-function,PyArg_ValidateKeywordArguments,3.2,,
-var,PyBaseObject_Type,3.2,,
-function,PyBool_FromLong,3.2,,
-var,PyBool_Type,3.2,,
-function,PyBuffer_FillContiguousStrides,3.11,,
-function,PyBuffer_FillInfo,3.11,,
-function,PyBuffer_FromContiguous,3.11,,
-function,PyBuffer_GetPointer,3.11,,
-function,PyBuffer_IsContiguous,3.11,,
-function,PyBuffer_Release,3.11,,
-function,PyBuffer_SizeFromFormat,3.11,,
-function,PyBuffer_ToContiguous,3.11,,
-var,PyByteArrayIter_Type,3.2,,
-function,PyByteArray_AsString,3.2,,
-function,PyByteArray_Concat,3.2,,
-function,PyByteArray_FromObject,3.2,,
-function,PyByteArray_FromStringAndSize,3.2,,
-function,PyByteArray_Resize,3.2,,
-function,PyByteArray_Size,3.2,,
-var,PyByteArray_Type,3.2,,
-var,PyBytesIter_Type,3.2,,
-function,PyBytes_AsString,3.2,,
-function,PyBytes_AsStringAndSize,3.2,,
-function,PyBytes_Concat,3.2,,
-function,PyBytes_ConcatAndDel,3.2,,
-function,PyBytes_DecodeEscape,3.2,,
-function,PyBytes_FromFormat,3.2,,
-function,PyBytes_FromFormatV,3.2,,
-function,PyBytes_FromObject,3.2,,
-function,PyBytes_FromString,3.2,,
-function,PyBytes_FromStringAndSize,3.2,,
-function,PyBytes_Repr,3.2,,
-function,PyBytes_Size,3.2,,
-var,PyBytes_Type,3.2,,
+func,PyAIter_Check,3.10,,
+func,PyArg_Parse,3.2,,
+func,PyArg_ParseTuple,3.2,,
+func,PyArg_ParseTupleAndKeywords,3.2,,
+func,PyArg_UnpackTuple,3.2,,
+func,PyArg_VaParse,3.2,,
+func,PyArg_VaParseTupleAndKeywords,3.2,,
+func,PyArg_ValidateKeywordArguments,3.2,,
+data,PyBaseObject_Type,3.2,,
+func,PyBool_FromLong,3.2,,
+data,PyBool_Type,3.2,,
+func,PyBuffer_FillContiguousStrides,3.11,,
+func,PyBuffer_FillInfo,3.11,,
+func,PyBuffer_FromContiguous,3.11,,
+func,PyBuffer_GetPointer,3.11,,
+func,PyBuffer_IsContiguous,3.11,,
+func,PyBuffer_Release,3.11,,
+func,PyBuffer_SizeFromFormat,3.11,,
+func,PyBuffer_ToContiguous,3.11,,
+data,PyByteArrayIter_Type,3.2,,
+func,PyByteArray_AsString,3.2,,
+func,PyByteArray_Concat,3.2,,
+func,PyByteArray_FromObject,3.2,,
+func,PyByteArray_FromStringAndSize,3.2,,
+func,PyByteArray_Resize,3.2,,
+func,PyByteArray_Size,3.2,,
+data,PyByteArray_Type,3.2,,
+data,PyBytesIter_Type,3.2,,
+func,PyBytes_AsString,3.2,,
+func,PyBytes_AsStringAndSize,3.2,,
+func,PyBytes_Concat,3.2,,
+func,PyBytes_ConcatAndDel,3.2,,
+func,PyBytes_DecodeEscape,3.2,,
+func,PyBytes_FromFormat,3.2,,
+func,PyBytes_FromFormatV,3.2,,
+func,PyBytes_FromObject,3.2,,
+func,PyBytes_FromString,3.2,,
+func,PyBytes_FromStringAndSize,3.2,,
+func,PyBytes_Repr,3.2,,
+func,PyBytes_Size,3.2,,
+data,PyBytes_Type,3.2,,
 type,PyCFunction,3.2,,
 type,PyCFunctionFast,3.13,,
 type,PyCFunctionFastWithKeywords,3.13,,
 type,PyCFunctionWithKeywords,3.2,,
-function,PyCFunction_GetFlags,3.2,,
-function,PyCFunction_GetFunction,3.2,,
-function,PyCFunction_GetSelf,3.2,,
-function,PyCFunction_New,3.4,,
-function,PyCFunction_NewEx,3.2,,
-var,PyCFunction_Type,3.2,,
-function,PyCMethod_New,3.9,,
-function,PyCallIter_New,3.2,,
-var,PyCallIter_Type,3.2,,
-function,PyCallable_Check,3.2,,
+func,PyCFunction_GetFlags,3.2,,
+func,PyCFunction_GetFunction,3.2,,
+func,PyCFunction_GetSelf,3.2,,
+func,PyCFunction_New,3.4,,
+func,PyCFunction_NewEx,3.2,,
+data,PyCFunction_Type,3.2,,
+func,PyCMethod_New,3.9,,
+func,PyCallIter_New,3.2,,
+data,PyCallIter_Type,3.2,,
+func,PyCallable_Check,3.2,,
 type,PyCapsule_Destructor,3.2,,
-function,PyCapsule_GetContext,3.2,,
-function,PyCapsule_GetDestructor,3.2,,
-function,PyCapsule_GetName,3.2,,
-function,PyCapsule_GetPointer,3.2,,
-function,PyCapsule_Import,3.2,,
-function,PyCapsule_IsValid,3.2,,
-function,PyCapsule_New,3.2,,
-function,PyCapsule_SetContext,3.2,,
-function,PyCapsule_SetDestructor,3.2,,
-function,PyCapsule_SetName,3.2,,
-function,PyCapsule_SetPointer,3.2,,
-var,PyCapsule_Type,3.2,,
-var,PyClassMethodDescr_Type,3.2,,
-function,PyCodec_BackslashReplaceErrors,3.2,,
-function,PyCodec_Decode,3.2,,
-function,PyCodec_Decoder,3.2,,
-function,PyCodec_Encode,3.2,,
-function,PyCodec_Encoder,3.2,,
-function,PyCodec_IgnoreErrors,3.2,,
-function,PyCodec_IncrementalDecoder,3.2,,
-function,PyCodec_IncrementalEncoder,3.2,,
-function,PyCodec_KnownEncoding,3.2,,
-function,PyCodec_LookupError,3.2,,
-function,PyCodec_NameReplaceErrors,3.7,,
-function,PyCodec_Register,3.2,,
-function,PyCodec_RegisterError,3.2,,
-function,PyCodec_ReplaceErrors,3.2,,
-function,PyCodec_StreamReader,3.2,,
-function,PyCodec_StreamWriter,3.2,,
-function,PyCodec_StrictErrors,3.2,,
-function,PyCodec_Unregister,3.10,,
-function,PyCodec_XMLCharRefReplaceErrors,3.2,,
-function,PyComplex_FromDoubles,3.2,,
-function,PyComplex_ImagAsDouble,3.2,,
-function,PyComplex_RealAsDouble,3.2,,
-var,PyComplex_Type,3.2,,
-function,PyDescr_NewClassMethod,3.2,,
-function,PyDescr_NewGetSet,3.2,,
-function,PyDescr_NewMember,3.2,,
-function,PyDescr_NewMethod,3.2,,
-var,PyDictItems_Type,3.2,,
-var,PyDictIterItem_Type,3.2,,
-var,PyDictIterKey_Type,3.2,,
-var,PyDictIterValue_Type,3.2,,
-var,PyDictKeys_Type,3.2,,
-function,PyDictProxy_New,3.2,,
-var,PyDictProxy_Type,3.2,,
-var,PyDictRevIterItem_Type,3.8,,
-var,PyDictRevIterKey_Type,3.8,,
-var,PyDictRevIterValue_Type,3.8,,
-var,PyDictValues_Type,3.2,,
-function,PyDict_Clear,3.2,,
-function,PyDict_Contains,3.2,,
-function,PyDict_Copy,3.2,,
-function,PyDict_DelItem,3.2,,
-function,PyDict_DelItemString,3.2,,
-function,PyDict_GetItem,3.2,,
-function,PyDict_GetItemRef,3.13,,
-function,PyDict_GetItemString,3.2,,
-function,PyDict_GetItemStringRef,3.13,,
-function,PyDict_GetItemWithError,3.2,,
-function,PyDict_Items,3.2,,
-function,PyDict_Keys,3.2,,
-function,PyDict_Merge,3.2,,
-function,PyDict_MergeFromSeq2,3.2,,
-function,PyDict_New,3.2,,
-function,PyDict_Next,3.2,,
-function,PyDict_SetItem,3.2,,
-function,PyDict_SetItemString,3.2,,
-function,PyDict_Size,3.2,,
-var,PyDict_Type,3.2,,
-function,PyDict_Update,3.2,,
-function,PyDict_Values,3.2,,
-var,PyEllipsis_Type,3.2,,
-var,PyEnum_Type,3.2,,
-function,PyErr_BadArgument,3.2,,
-function,PyErr_BadInternalCall,3.2,,
-function,PyErr_CheckSignals,3.2,,
-function,PyErr_Clear,3.2,,
-function,PyErr_Display,3.2,,
-function,PyErr_DisplayException,3.12,,
-function,PyErr_ExceptionMatches,3.2,,
-function,PyErr_Fetch,3.2,,
-function,PyErr_Format,3.2,,
-function,PyErr_FormatV,3.5,,
-function,PyErr_GetExcInfo,3.7,,
-function,PyErr_GetHandledException,3.11,,
-function,PyErr_GetRaisedException,3.12,,
-function,PyErr_GivenExceptionMatches,3.2,,
-function,PyErr_NewException,3.2,,
-function,PyErr_NewExceptionWithDoc,3.2,,
-function,PyErr_NoMemory,3.2,,
-function,PyErr_NormalizeException,3.2,,
-function,PyErr_Occurred,3.2,,
-function,PyErr_Print,3.2,,
-function,PyErr_PrintEx,3.2,,
-function,PyErr_ProgramText,3.2,,
-function,PyErr_ResourceWarning,3.6,,
-function,PyErr_Restore,3.2,,
-function,PyErr_SetExcFromWindowsErr,3.7,on Windows,
-function,PyErr_SetExcFromWindowsErrWithFilename,3.7,on Windows,
-function,PyErr_SetExcFromWindowsErrWithFilenameObject,3.7,on Windows,
-function,PyErr_SetExcFromWindowsErrWithFilenameObjects,3.7,on Windows,
-function,PyErr_SetExcInfo,3.7,,
-function,PyErr_SetFromErrno,3.2,,
-function,PyErr_SetFromErrnoWithFilename,3.2,,
-function,PyErr_SetFromErrnoWithFilenameObject,3.2,,
-function,PyErr_SetFromErrnoWithFilenameObjects,3.7,,
-function,PyErr_SetFromWindowsErr,3.7,on Windows,
-function,PyErr_SetFromWindowsErrWithFilename,3.7,on Windows,
-function,PyErr_SetHandledException,3.11,,
-function,PyErr_SetImportError,3.7,,
-function,PyErr_SetImportErrorSubclass,3.6,,
-function,PyErr_SetInterrupt,3.2,,
-function,PyErr_SetInterruptEx,3.10,,
-function,PyErr_SetNone,3.2,,
-function,PyErr_SetObject,3.2,,
-function,PyErr_SetRaisedException,3.12,,
-function,PyErr_SetString,3.2,,
-function,PyErr_SyntaxLocation,3.2,,
-function,PyErr_SyntaxLocationEx,3.7,,
-function,PyErr_WarnEx,3.2,,
-function,PyErr_WarnExplicit,3.2,,
-function,PyErr_WarnFormat,3.2,,
-function,PyErr_WriteUnraisable,3.2,,
-function,PyEval_AcquireThread,3.2,,
-function,PyEval_EvalCode,3.2,,
-function,PyEval_EvalCodeEx,3.2,,
-function,PyEval_EvalFrame,3.2,,
-function,PyEval_EvalFrameEx,3.2,,
-function,PyEval_GetBuiltins,3.2,,
-function,PyEval_GetFrame,3.2,,
-function,PyEval_GetFrameBuiltins,3.13,,
-function,PyEval_GetFrameGlobals,3.13,,
-function,PyEval_GetFrameLocals,3.13,,
-function,PyEval_GetFuncDesc,3.2,,
-function,PyEval_GetFuncName,3.2,,
-function,PyEval_GetGlobals,3.2,,
-function,PyEval_GetLocals,3.2,,
-function,PyEval_InitThreads,3.2,,
-function,PyEval_ReleaseThread,3.2,,
-function,PyEval_RestoreThread,3.2,,
-function,PyEval_SaveThread,3.2,,
-var,PyExc_ArithmeticError,3.2,,
-var,PyExc_AssertionError,3.2,,
-var,PyExc_AttributeError,3.2,,
-var,PyExc_BaseException,3.2,,
-var,PyExc_BaseExceptionGroup,3.11,,
-var,PyExc_BlockingIOError,3.7,,
-var,PyExc_BrokenPipeError,3.7,,
-var,PyExc_BufferError,3.2,,
-var,PyExc_BytesWarning,3.2,,
-var,PyExc_ChildProcessError,3.7,,
-var,PyExc_ConnectionAbortedError,3.7,,
-var,PyExc_ConnectionError,3.7,,
-var,PyExc_ConnectionRefusedError,3.7,,
-var,PyExc_ConnectionResetError,3.7,,
-var,PyExc_DeprecationWarning,3.2,,
-var,PyExc_EOFError,3.2,,
-var,PyExc_EncodingWarning,3.10,,
-var,PyExc_EnvironmentError,3.2,,
-var,PyExc_Exception,3.2,,
-var,PyExc_FileExistsError,3.7,,
-var,PyExc_FileNotFoundError,3.7,,
-var,PyExc_FloatingPointError,3.2,,
-var,PyExc_FutureWarning,3.2,,
-var,PyExc_GeneratorExit,3.2,,
-var,PyExc_IOError,3.2,,
-var,PyExc_ImportError,3.2,,
-var,PyExc_ImportWarning,3.2,,
-var,PyExc_IncompleteInputError,3.13,,
-var,PyExc_IndentationError,3.2,,
-var,PyExc_IndexError,3.2,,
-var,PyExc_InterruptedError,3.7,,
-var,PyExc_IsADirectoryError,3.7,,
-var,PyExc_KeyError,3.2,,
-var,PyExc_KeyboardInterrupt,3.2,,
-var,PyExc_LookupError,3.2,,
-var,PyExc_MemoryError,3.2,,
-var,PyExc_ModuleNotFoundError,3.6,,
-var,PyExc_NameError,3.2,,
-var,PyExc_NotADirectoryError,3.7,,
-var,PyExc_NotImplementedError,3.2,,
-var,PyExc_OSError,3.2,,
-var,PyExc_OverflowError,3.2,,
-var,PyExc_PendingDeprecationWarning,3.2,,
-var,PyExc_PermissionError,3.7,,
-var,PyExc_ProcessLookupError,3.7,,
-var,PyExc_RecursionError,3.7,,
-var,PyExc_ReferenceError,3.2,,
-var,PyExc_ResourceWarning,3.7,,
-var,PyExc_RuntimeError,3.2,,
-var,PyExc_RuntimeWarning,3.2,,
-var,PyExc_StopAsyncIteration,3.7,,
-var,PyExc_StopIteration,3.2,,
-var,PyExc_SyntaxError,3.2,,
-var,PyExc_SyntaxWarning,3.2,,
-var,PyExc_SystemError,3.2,,
-var,PyExc_SystemExit,3.2,,
-var,PyExc_TabError,3.2,,
-var,PyExc_TimeoutError,3.7,,
-var,PyExc_TypeError,3.2,,
-var,PyExc_UnboundLocalError,3.2,,
-var,PyExc_UnicodeDecodeError,3.2,,
-var,PyExc_UnicodeEncodeError,3.2,,
-var,PyExc_UnicodeError,3.2,,
-var,PyExc_UnicodeTranslateError,3.2,,
-var,PyExc_UnicodeWarning,3.2,,
-var,PyExc_UserWarning,3.2,,
-var,PyExc_ValueError,3.2,,
-var,PyExc_Warning,3.2,,
-var,PyExc_WindowsError,3.7,on Windows,
-var,PyExc_ZeroDivisionError,3.2,,
-function,PyExceptionClass_Name,3.8,,
-function,PyException_GetArgs,3.12,,
-function,PyException_GetCause,3.2,,
-function,PyException_GetContext,3.2,,
-function,PyException_GetTraceback,3.2,,
-function,PyException_SetArgs,3.12,,
-function,PyException_SetCause,3.2,,
-function,PyException_SetContext,3.2,,
-function,PyException_SetTraceback,3.2,,
-function,PyFile_FromFd,3.2,,
-function,PyFile_GetLine,3.2,,
-function,PyFile_WriteObject,3.2,,
-function,PyFile_WriteString,3.2,,
-var,PyFilter_Type,3.2,,
-function,PyFloat_AsDouble,3.2,,
-function,PyFloat_FromDouble,3.2,,
-function,PyFloat_FromString,3.2,,
-function,PyFloat_GetInfo,3.2,,
-function,PyFloat_GetMax,3.2,,
-function,PyFloat_GetMin,3.2,,
-var,PyFloat_Type,3.2,,
+func,PyCapsule_GetContext,3.2,,
+func,PyCapsule_GetDestructor,3.2,,
+func,PyCapsule_GetName,3.2,,
+func,PyCapsule_GetPointer,3.2,,
+func,PyCapsule_Import,3.2,,
+func,PyCapsule_IsValid,3.2,,
+func,PyCapsule_New,3.2,,
+func,PyCapsule_SetContext,3.2,,
+func,PyCapsule_SetDestructor,3.2,,
+func,PyCapsule_SetName,3.2,,
+func,PyCapsule_SetPointer,3.2,,
+data,PyCapsule_Type,3.2,,
+data,PyClassMethodDescr_Type,3.2,,
+func,PyCodec_BackslashReplaceErrors,3.2,,
+func,PyCodec_Decode,3.2,,
+func,PyCodec_Decoder,3.2,,
+func,PyCodec_Encode,3.2,,
+func,PyCodec_Encoder,3.2,,
+func,PyCodec_IgnoreErrors,3.2,,
+func,PyCodec_IncrementalDecoder,3.2,,
+func,PyCodec_IncrementalEncoder,3.2,,
+func,PyCodec_KnownEncoding,3.2,,
+func,PyCodec_LookupError,3.2,,
+func,PyCodec_NameReplaceErrors,3.7,,
+func,PyCodec_Register,3.2,,
+func,PyCodec_RegisterError,3.2,,
+func,PyCodec_ReplaceErrors,3.2,,
+func,PyCodec_StreamReader,3.2,,
+func,PyCodec_StreamWriter,3.2,,
+func,PyCodec_StrictErrors,3.2,,
+func,PyCodec_Unregister,3.10,,
+func,PyCodec_XMLCharRefReplaceErrors,3.2,,
+func,PyComplex_FromDoubles,3.2,,
+func,PyComplex_ImagAsDouble,3.2,,
+func,PyComplex_RealAsDouble,3.2,,
+data,PyComplex_Type,3.2,,
+func,PyDescr_NewClassMethod,3.2,,
+func,PyDescr_NewGetSet,3.2,,
+func,PyDescr_NewMember,3.2,,
+func,PyDescr_NewMethod,3.2,,
+data,PyDictItems_Type,3.2,,
+data,PyDictIterItem_Type,3.2,,
+data,PyDictIterKey_Type,3.2,,
+data,PyDictIterValue_Type,3.2,,
+data,PyDictKeys_Type,3.2,,
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+data,PyDictProxy_Type,3.2,,
+data,PyDictRevIterItem_Type,3.8,,
+data,PyDictRevIterKey_Type,3.8,,
+data,PyDictRevIterValue_Type,3.8,,
+data,PyDictValues_Type,3.2,,
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+func,PyDict_Contains,3.2,,
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+func,PyDict_GetItemRef,3.13,,
+func,PyDict_GetItemString,3.2,,
+func,PyDict_GetItemStringRef,3.13,,
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+func,PyDict_Keys,3.2,,
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+func,PyDict_MergeFromSeq2,3.2,,
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+func,PyErr_BadInternalCall,3.2,,
+func,PyErr_CheckSignals,3.2,,
+func,PyErr_Clear,3.2,,
+func,PyErr_Display,3.2,,
+func,PyErr_DisplayException,3.12,,
+func,PyErr_ExceptionMatches,3.2,,
+func,PyErr_Fetch,3.2,,
+func,PyErr_Format,3.2,,
+func,PyErr_FormatV,3.5,,
+func,PyErr_GetExcInfo,3.7,,
+func,PyErr_GetHandledException,3.11,,
+func,PyErr_GetRaisedException,3.12,,
+func,PyErr_GivenExceptionMatches,3.2,,
+func,PyErr_NewException,3.2,,
+func,PyErr_NewExceptionWithDoc,3.2,,
+func,PyErr_NoMemory,3.2,,
+func,PyErr_NormalizeException,3.2,,
+func,PyErr_Occurred,3.2,,
+func,PyErr_Print,3.2,,
+func,PyErr_PrintEx,3.2,,
+func,PyErr_ProgramText,3.2,,
+func,PyErr_ResourceWarning,3.6,,
+func,PyErr_Restore,3.2,,
+func,PyErr_SetExcFromWindowsErr,3.7,on Windows,
+func,PyErr_SetExcFromWindowsErrWithFilename,3.7,on Windows,
+func,PyErr_SetExcFromWindowsErrWithFilenameObject,3.7,on Windows,
+func,PyErr_SetExcFromWindowsErrWithFilenameObjects,3.7,on Windows,
+func,PyErr_SetExcInfo,3.7,,
+func,PyErr_SetFromErrno,3.2,,
+func,PyErr_SetFromErrnoWithFilename,3.2,,
+func,PyErr_SetFromErrnoWithFilenameObject,3.2,,
+func,PyErr_SetFromErrnoWithFilenameObjects,3.7,,
+func,PyErr_SetFromWindowsErr,3.7,on Windows,
+func,PyErr_SetFromWindowsErrWithFilename,3.7,on Windows,
+func,PyErr_SetHandledException,3.11,,
+func,PyErr_SetImportError,3.7,,
+func,PyErr_SetImportErrorSubclass,3.6,,
+func,PyErr_SetInterrupt,3.2,,
+func,PyErr_SetInterruptEx,3.10,,
+func,PyErr_SetNone,3.2,,
+func,PyErr_SetObject,3.2,,
+func,PyErr_SetRaisedException,3.12,,
+func,PyErr_SetString,3.2,,
+func,PyErr_SyntaxLocation,3.2,,
+func,PyErr_SyntaxLocationEx,3.7,,
+func,PyErr_WarnEx,3.2,,
+func,PyErr_WarnExplicit,3.2,,
+func,PyErr_WarnFormat,3.2,,
+func,PyErr_WriteUnraisable,3.2,,
+func,PyEval_AcquireThread,3.2,,
+func,PyEval_EvalCode,3.2,,
+func,PyEval_EvalCodeEx,3.2,,
+func,PyEval_EvalFrame,3.2,,
+func,PyEval_EvalFrameEx,3.2,,
+func,PyEval_GetBuiltins,3.2,,
+func,PyEval_GetFrame,3.2,,
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+func,PyEval_GetFrameGlobals,3.13,,
+func,PyEval_GetFrameLocals,3.13,,
+func,PyEval_GetFuncDesc,3.2,,
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+func,PyEval_InitThreads,3.2,,
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+func,PyEval_SaveThread,3.2,,
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+data,PyExc_BrokenPipeError,3.7,,
+data,PyExc_BufferError,3.2,,
+data,PyExc_BytesWarning,3.2,,
+data,PyExc_ChildProcessError,3.7,,
+data,PyExc_ConnectionAbortedError,3.7,,
+data,PyExc_ConnectionError,3.7,,
+data,PyExc_ConnectionRefusedError,3.7,,
+data,PyExc_ConnectionResetError,3.7,,
+data,PyExc_DeprecationWarning,3.2,,
+data,PyExc_EOFError,3.2,,
+data,PyExc_EncodingWarning,3.10,,
+data,PyExc_EnvironmentError,3.2,,
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+data,PyExc_FloatingPointError,3.2,,
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+data,PyExc_GeneratorExit,3.2,,
+data,PyExc_IOError,3.2,,
+data,PyExc_ImportError,3.2,,
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+data,PyExc_KeyError,3.2,,
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+data,PyExc_LookupError,3.2,,
+data,PyExc_MemoryError,3.2,,
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+data,PyExc_NotImplementedError,3.2,,
+data,PyExc_OSError,3.2,,
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+data,PyExc_PendingDeprecationWarning,3.2,,
+data,PyExc_PermissionError,3.7,,
+data,PyExc_ProcessLookupError,3.7,,
+data,PyExc_RecursionError,3.7,,
+data,PyExc_ReferenceError,3.2,,
+data,PyExc_ResourceWarning,3.7,,
+data,PyExc_RuntimeError,3.2,,
+data,PyExc_RuntimeWarning,3.2,,
+data,PyExc_StopAsyncIteration,3.7,,
+data,PyExc_StopIteration,3.2,,
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+data,PyExc_SyntaxWarning,3.2,,
+data,PyExc_SystemError,3.2,,
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+data,PyExc_TabError,3.2,,
+data,PyExc_TimeoutError,3.7,,
+data,PyExc_TypeError,3.2,,
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+data,PyExc_UnicodeDecodeError,3.2,,
+data,PyExc_UnicodeEncodeError,3.2,,
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+data,PyExc_UserWarning,3.2,,
+data,PyExc_ValueError,3.2,,
+data,PyExc_Warning,3.2,,
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+data,PyExc_ZeroDivisionError,3.2,,
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+func,PyException_GetContext,3.2,,
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+func,PyException_SetCause,3.2,,
+func,PyException_SetContext,3.2,,
+func,PyException_SetTraceback,3.2,,
+func,PyFile_FromFd,3.2,,
+func,PyFile_GetLine,3.2,,
+func,PyFile_WriteObject,3.2,,
+func,PyFile_WriteString,3.2,,
+data,PyFilter_Type,3.2,,
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+func,PyFloat_FromDouble,3.2,,
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+func,PyFloat_GetInfo,3.2,,
+func,PyFloat_GetMax,3.2,,
+func,PyFloat_GetMin,3.2,,
+data,PyFloat_Type,3.2,,
 type,PyFrameObject,3.2,,opaque
-function,PyFrame_GetCode,3.10,,
-function,PyFrame_GetLineNumber,3.10,,
-function,PyFrozenSet_New,3.2,,
-var,PyFrozenSet_Type,3.2,,
-function,PyGC_Collect,3.2,,
-function,PyGC_Disable,3.10,,
-function,PyGC_Enable,3.10,,
-function,PyGC_IsEnabled,3.10,,
-function,PyGILState_Ensure,3.2,,
-function,PyGILState_GetThisThreadState,3.2,,
-function,PyGILState_Release,3.2,,
+func,PyFrame_GetCode,3.10,,
+func,PyFrame_GetLineNumber,3.10,,
+func,PyFrozenSet_New,3.2,,
+data,PyFrozenSet_Type,3.2,,
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+func,PyGC_Disable,3.10,,
+func,PyGC_Enable,3.10,,
+func,PyGC_IsEnabled,3.10,,
+func,PyGILState_Ensure,3.2,,
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+func,PyGILState_Release,3.2,,
 type,PyGILState_STATE,3.2,,
 type,PyGetSetDef,3.2,,full-abi
-var,PyGetSetDescr_Type,3.2,,
-function,PyImport_AddModule,3.2,,
-function,PyImport_AddModuleObject,3.7,,
-function,PyImport_AddModuleRef,3.13,,
-function,PyImport_AppendInittab,3.2,,
-function,PyImport_ExecCodeModule,3.2,,
-function,PyImport_ExecCodeModuleEx,3.2,,
-function,PyImport_ExecCodeModuleObject,3.7,,
-function,PyImport_ExecCodeModuleWithPathnames,3.2,,
-function,PyImport_GetImporter,3.2,,
-function,PyImport_GetMagicNumber,3.2,,
-function,PyImport_GetMagicTag,3.2,,
-function,PyImport_GetModule,3.8,,
-function,PyImport_GetModuleDict,3.2,,
-function,PyImport_Import,3.2,,
-function,PyImport_ImportFrozenModule,3.2,,
-function,PyImport_ImportFrozenModuleObject,3.7,,
-function,PyImport_ImportModule,3.2,,
-function,PyImport_ImportModuleLevel,3.2,,
-function,PyImport_ImportModuleLevelObject,3.7,,
-function,PyImport_ImportModuleNoBlock,3.2,,
-function,PyImport_ReloadModule,3.2,,
-function,PyIndex_Check,3.8,,
+data,PyGetSetDescr_Type,3.2,,
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+func,PyImport_AddModuleObject,3.7,,
+func,PyImport_AddModuleRef,3.13,,
+func,PyImport_AppendInittab,3.2,,
+func,PyImport_ExecCodeModule,3.2,,
+func,PyImport_ExecCodeModuleEx,3.2,,
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+data,PyReversed_Type,3.2,,
+func,PySeqIter_New,3.2,,
+data,PySeqIter_Type,3.2,,
+func,PySequence_Check,3.2,,
+func,PySequence_Concat,3.2,,
+func,PySequence_Contains,3.2,,
+func,PySequence_Count,3.2,,
+func,PySequence_DelItem,3.2,,
+func,PySequence_DelSlice,3.2,,
+func,PySequence_Fast,3.2,,
+func,PySequence_GetItem,3.2,,
+func,PySequence_GetSlice,3.2,,
+func,PySequence_In,3.2,,
+func,PySequence_InPlaceConcat,3.2,,
+func,PySequence_InPlaceRepeat,3.2,,
+func,PySequence_Index,3.2,,
+func,PySequence_Length,3.2,,
+func,PySequence_List,3.2,,
+func,PySequence_Repeat,3.2,,
+func,PySequence_SetItem,3.2,,
+func,PySequence_SetSlice,3.2,,
+func,PySequence_Size,3.2,,
+func,PySequence_Tuple,3.2,,
+data,PySetIter_Type,3.2,,
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+func,PySet_Clear,3.2,,
+func,PySet_Contains,3.2,,
+func,PySet_Discard,3.2,,
+func,PySet_New,3.2,,
+func,PySet_Pop,3.2,,
+func,PySet_Size,3.2,,
+data,PySet_Type,3.2,,
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+func,PySlice_GetIndices,3.2,,
+func,PySlice_GetIndicesEx,3.2,,
+func,PySlice_New,3.2,,
+data,PySlice_Type,3.2,,
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+func,PyState_FindModule,3.2,,
+func,PyState_RemoveModule,3.3,,
 type,PyStructSequence_Desc,3.2,,full-abi
 type,PyStructSequence_Field,3.2,,full-abi
-function,PyStructSequence_GetItem,3.2,,
-function,PyStructSequence_New,3.2,,
-function,PyStructSequence_NewType,3.2,,
-function,PyStructSequence_SetItem,3.2,,
-var,PyStructSequence_UnnamedField,3.11,,
-var,PySuper_Type,3.2,,
-function,PySys_Audit,3.13,,
-function,PySys_AuditTuple,3.13,,
-function,PySys_FormatStderr,3.2,,
-function,PySys_FormatStdout,3.2,,
-function,PySys_GetObject,3.2,,
-function,PySys_GetXOptions,3.7,,
-function,PySys_ResetWarnOptions,3.2,,
-function,PySys_SetArgv,3.2,,
-function,PySys_SetArgvEx,3.2,,
-function,PySys_SetObject,3.2,,
-function,PySys_WriteStderr,3.2,,
-function,PySys_WriteStdout,3.2,,
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+func,PyStructSequence_New,3.2,,
+func,PyStructSequence_NewType,3.2,,
+func,PyStructSequence_SetItem,3.2,,
+data,PyStructSequence_UnnamedField,3.11,,
+data,PySuper_Type,3.2,,
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+func,PySys_FormatStdout,3.2,,
+func,PySys_GetObject,3.2,,
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+func,PySys_ResetWarnOptions,3.2,,
+func,PySys_SetArgv,3.2,,
+func,PySys_SetArgvEx,3.2,,
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+func,PySys_WriteStdout,3.2,,
 type,PyThreadState,3.2,,opaque
-function,PyThreadState_Clear,3.2,,
-function,PyThreadState_Delete,3.2,,
-function,PyThreadState_Get,3.2,,
-function,PyThreadState_GetDict,3.2,,
-function,PyThreadState_GetFrame,3.10,,
-function,PyThreadState_GetID,3.10,,
-function,PyThreadState_GetInterpreter,3.10,,
-function,PyThreadState_New,3.2,,
-function,PyThreadState_SetAsyncExc,3.2,,
-function,PyThreadState_Swap,3.2,,
-function,PyThread_GetInfo,3.3,,
-function,PyThread_ReInitTLS,3.2,,
-function,PyThread_acquire_lock,3.2,,
-function,PyThread_acquire_lock_timed,3.2,,
-function,PyThread_allocate_lock,3.2,,
-function,PyThread_create_key,3.2,,
-function,PyThread_delete_key,3.2,,
-function,PyThread_delete_key_value,3.2,,
-function,PyThread_exit_thread,3.2,,
-function,PyThread_free_lock,3.2,,
-function,PyThread_get_key_value,3.2,,
-function,PyThread_get_stacksize,3.2,,
-function,PyThread_get_thread_ident,3.2,,
-function,PyThread_get_thread_native_id,3.2,on platforms with native thread IDs,
-function,PyThread_init_thread,3.2,,
-function,PyThread_release_lock,3.2,,
-function,PyThread_set_key_value,3.2,,
-function,PyThread_set_stacksize,3.2,,
-function,PyThread_start_new_thread,3.2,,
-function,PyThread_tss_alloc,3.7,,
-function,PyThread_tss_create,3.7,,
-function,PyThread_tss_delete,3.7,,
-function,PyThread_tss_free,3.7,,
-function,PyThread_tss_get,3.7,,
-function,PyThread_tss_is_created,3.7,,
-function,PyThread_tss_set,3.7,,
-function,PyTraceBack_Here,3.2,,
-function,PyTraceBack_Print,3.2,,
-var,PyTraceBack_Type,3.2,,
-var,PyTupleIter_Type,3.2,,
-function,PyTuple_GetItem,3.2,,
-function,PyTuple_GetSlice,3.2,,
-function,PyTuple_New,3.2,,
-function,PyTuple_Pack,3.2,,
-function,PyTuple_SetItem,3.2,,
-function,PyTuple_Size,3.2,,
-var,PyTuple_Type,3.2,,
+func,PyThreadState_Clear,3.2,,
+func,PyThreadState_Delete,3.2,,
+func,PyThreadState_Get,3.2,,
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+func,PyThreadState_GetInterpreter,3.10,,
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 type,PyTypeObject,3.2,,opaque
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 type,PyType_Slot,3.2,,full-abi
 type,PyType_Spec,3.2,,full-abi
-var,PyType_Type,3.2,,
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-function,PyUnicodeDecodeError_GetEncoding,3.2,,
-function,PyUnicodeDecodeError_GetEnd,3.2,,
-function,PyUnicodeDecodeError_GetObject,3.2,,
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-function,PyUnicodeDecodeError_GetStart,3.2,,
-function,PyUnicodeDecodeError_SetEnd,3.2,,
-function,PyUnicodeDecodeError_SetReason,3.2,,
-function,PyUnicodeDecodeError_SetStart,3.2,,
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-function,PyUnicodeEncodeError_GetEnd,3.2,,
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-function,PyUnicodeEncodeError_GetStart,3.2,,
-function,PyUnicodeEncodeError_SetEnd,3.2,,
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-function,PyUnicodeEncodeError_SetStart,3.2,,
-var,PyUnicodeIter_Type,3.2,,
-function,PyUnicodeTranslateError_GetEnd,3.2,,
-function,PyUnicodeTranslateError_GetObject,3.2,,
-function,PyUnicodeTranslateError_GetReason,3.2,,
-function,PyUnicodeTranslateError_GetStart,3.2,,
-function,PyUnicodeTranslateError_SetEnd,3.2,,
-function,PyUnicodeTranslateError_SetReason,3.2,,
-function,PyUnicodeTranslateError_SetStart,3.2,,
-function,PyUnicode_Append,3.2,,
-function,PyUnicode_AppendAndDel,3.2,,
-function,PyUnicode_AsASCIIString,3.2,,
-function,PyUnicode_AsCharmapString,3.2,,
-function,PyUnicode_AsDecodedObject,3.2,,
-function,PyUnicode_AsDecodedUnicode,3.2,,
-function,PyUnicode_AsEncodedObject,3.2,,
-function,PyUnicode_AsEncodedString,3.2,,
-function,PyUnicode_AsEncodedUnicode,3.2,,
-function,PyUnicode_AsLatin1String,3.2,,
-function,PyUnicode_AsMBCSString,3.7,on Windows,
-function,PyUnicode_AsRawUnicodeEscapeString,3.2,,
-function,PyUnicode_AsUCS4,3.7,,
-function,PyUnicode_AsUCS4Copy,3.7,,
-function,PyUnicode_AsUTF16String,3.2,,
-function,PyUnicode_AsUTF32String,3.2,,
-function,PyUnicode_AsUTF8AndSize,3.10,,
-function,PyUnicode_AsUTF8String,3.2,,
-function,PyUnicode_AsUnicodeEscapeString,3.2,,
-function,PyUnicode_AsWideChar,3.2,,
-function,PyUnicode_AsWideCharString,3.7,,
-function,PyUnicode_BuildEncodingMap,3.2,,
-function,PyUnicode_Compare,3.2,,
-function,PyUnicode_CompareWithASCIIString,3.2,,
-function,PyUnicode_Concat,3.2,,
-function,PyUnicode_Contains,3.2,,
-function,PyUnicode_Count,3.2,,
-function,PyUnicode_Decode,3.2,,
-function,PyUnicode_DecodeASCII,3.2,,
-function,PyUnicode_DecodeCharmap,3.2,,
-function,PyUnicode_DecodeCodePageStateful,3.7,on Windows,
-function,PyUnicode_DecodeFSDefault,3.2,,
-function,PyUnicode_DecodeFSDefaultAndSize,3.2,,
-function,PyUnicode_DecodeLatin1,3.2,,
-function,PyUnicode_DecodeLocale,3.7,,
-function,PyUnicode_DecodeLocaleAndSize,3.7,,
-function,PyUnicode_DecodeMBCS,3.7,on Windows,
-function,PyUnicode_DecodeMBCSStateful,3.7,on Windows,
-function,PyUnicode_DecodeRawUnicodeEscape,3.2,,
-function,PyUnicode_DecodeUTF16,3.2,,
-function,PyUnicode_DecodeUTF16Stateful,3.2,,
-function,PyUnicode_DecodeUTF32,3.2,,
-function,PyUnicode_DecodeUTF32Stateful,3.2,,
-function,PyUnicode_DecodeUTF7,3.2,,
-function,PyUnicode_DecodeUTF7Stateful,3.2,,
-function,PyUnicode_DecodeUTF8,3.2,,
-function,PyUnicode_DecodeUTF8Stateful,3.2,,
-function,PyUnicode_DecodeUnicodeEscape,3.2,,
-function,PyUnicode_EncodeCodePage,3.7,on Windows,
-function,PyUnicode_EncodeFSDefault,3.2,,
-function,PyUnicode_EncodeLocale,3.7,,
-function,PyUnicode_EqualToUTF8,3.13,,
-function,PyUnicode_EqualToUTF8AndSize,3.13,,
-function,PyUnicode_FSConverter,3.2,,
-function,PyUnicode_FSDecoder,3.2,,
-function,PyUnicode_Find,3.2,,
-function,PyUnicode_FindChar,3.7,,
-function,PyUnicode_Format,3.2,,
-function,PyUnicode_FromEncodedObject,3.2,,
-function,PyUnicode_FromFormat,3.2,,
-function,PyUnicode_FromFormatV,3.2,,
-function,PyUnicode_FromObject,3.2,,
-function,PyUnicode_FromOrdinal,3.2,,
-function,PyUnicode_FromString,3.2,,
-function,PyUnicode_FromStringAndSize,3.2,,
-function,PyUnicode_FromWideChar,3.2,,
-function,PyUnicode_GetDefaultEncoding,3.2,,
-function,PyUnicode_GetLength,3.7,,
-function,PyUnicode_InternFromString,3.2,,
-function,PyUnicode_InternInPlace,3.2,,
-function,PyUnicode_IsIdentifier,3.2,,
-function,PyUnicode_Join,3.2,,
-function,PyUnicode_Partition,3.2,,
-function,PyUnicode_RPartition,3.2,,
-function,PyUnicode_RSplit,3.2,,
-function,PyUnicode_ReadChar,3.7,,
-function,PyUnicode_Replace,3.2,,
-function,PyUnicode_Resize,3.2,,
-function,PyUnicode_RichCompare,3.2,,
-function,PyUnicode_Split,3.2,,
-function,PyUnicode_Splitlines,3.2,,
-function,PyUnicode_Substring,3.7,,
-function,PyUnicode_Tailmatch,3.2,,
-function,PyUnicode_Translate,3.2,,
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+data,PyType_Type,3.2,,
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+func,PyUnicodeDecodeError_GetStart,3.2,,
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+func,PyUnicodeTranslateError_GetStart,3.2,,
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+func,PyUnicode_DecodeLocaleAndSize,3.7,,
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+func,PyUnicode_DecodeMBCSStateful,3.7,on Windows,
+func,PyUnicode_DecodeRawUnicodeEscape,3.2,,
+func,PyUnicode_DecodeUTF16,3.2,,
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+func,PyUnicode_DecodeUTF32,3.2,,
+func,PyUnicode_DecodeUTF32Stateful,3.2,,
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 member,PyVarObject.ob_base,3.2,,
 member,PyVarObject.ob_size,3.2,,
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 type,PyWeakReference,3.2,,opaque
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 macro,Py_BEGIN_ALLOW_THREADS,3.2,,
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-function,Py_BuildValue,3.2,,
-function,Py_BytesMain,3.8,,
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 macro,Py_END_ALLOW_THREADS,3.2,,
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-function,Py_FinalizeEx,3.6,,
-function,Py_GenericAlias,3.9,,
-var,Py_GenericAliasType,3.9,,
-function,Py_GetBuildInfo,3.2,,
-function,Py_GetCompiler,3.2,,
-function,Py_GetConstant,3.13,,
-function,Py_GetConstantBorrowed,3.13,,
-function,Py_GetCopyright,3.2,,
-function,Py_GetExecPrefix,3.2,,
-function,Py_GetPath,3.2,,
-function,Py_GetPlatform,3.2,,
-function,Py_GetPrefix,3.2,,
-function,Py_GetProgramFullPath,3.2,,
-function,Py_GetProgramName,3.2,,
-function,Py_GetPythonHome,3.2,,
-function,Py_GetRecursionLimit,3.2,,
-function,Py_GetVersion,3.2,,
-var,Py_HasFileSystemDefaultEncoding,3.2,,
-function,Py_IncRef,3.2,,
-function,Py_Initialize,3.2,,
-function,Py_InitializeEx,3.2,,
-function,Py_Is,3.10,,
-function,Py_IsFalse,3.10,,
-function,Py_IsFinalizing,3.13,,
-function,Py_IsInitialized,3.2,,
-function,Py_IsNone,3.10,,
-function,Py_IsTrue,3.10,,
-function,Py_LeaveRecursiveCall,3.9,,
-function,Py_Main,3.2,,
-function,Py_MakePendingCalls,3.2,,
-function,Py_NewInterpreter,3.2,,
-function,Py_NewRef,3.10,,
-function,Py_ReprEnter,3.2,,
-function,Py_ReprLeave,3.2,,
-function,Py_SetProgramName,3.2,,
-function,Py_SetPythonHome,3.2,,
-function,Py_SetRecursionLimit,3.2,,
+func,Py_EncodeLocale,3.7,,
+func,Py_EndInterpreter,3.2,,
+func,Py_EnterRecursiveCall,3.9,,
+func,Py_Exit,3.2,,
+func,Py_FatalError,3.2,,
+data,Py_FileSystemDefaultEncodeErrors,3.10,,
+data,Py_FileSystemDefaultEncoding,3.2,,
+func,Py_Finalize,3.2,,
+func,Py_FinalizeEx,3.6,,
+func,Py_GenericAlias,3.9,,
+data,Py_GenericAliasType,3.9,,
+func,Py_GetBuildInfo,3.2,,
+func,Py_GetCompiler,3.2,,
+func,Py_GetConstant,3.13,,
+func,Py_GetConstantBorrowed,3.13,,
+func,Py_GetCopyright,3.2,,
+func,Py_GetExecPrefix,3.2,,
+func,Py_GetPath,3.2,,
+func,Py_GetPlatform,3.2,,
+func,Py_GetPrefix,3.2,,
+func,Py_GetProgramFullPath,3.2,,
+func,Py_GetProgramName,3.2,,
+func,Py_GetPythonHome,3.2,,
+func,Py_GetRecursionLimit,3.2,,
+func,Py_GetVersion,3.2,,
+data,Py_HasFileSystemDefaultEncoding,3.2,,
+func,Py_IncRef,3.2,,
+func,Py_Initialize,3.2,,
+func,Py_InitializeEx,3.2,,
+func,Py_Is,3.10,,
+func,Py_IsFalse,3.10,,
+func,Py_IsFinalizing,3.13,,
+func,Py_IsInitialized,3.2,,
+func,Py_IsNone,3.10,,
+func,Py_IsTrue,3.10,,
+func,Py_LeaveRecursiveCall,3.9,,
+func,Py_Main,3.2,,
+func,Py_MakePendingCalls,3.2,,
+func,Py_NewInterpreter,3.2,,
+func,Py_NewRef,3.10,,
+func,Py_ReprEnter,3.2,,
+func,Py_ReprLeave,3.2,,
+func,Py_SetProgramName,3.2,,
+func,Py_SetPythonHome,3.2,,
+func,Py_SetRecursionLimit,3.2,,
 type,Py_UCS4,3.2,,
 macro,Py_UNBLOCK_THREADS,3.2,,
-var,Py_UTF8Mode,3.8,,
-function,Py_VaBuildValue,3.2,,
-var,Py_Version,3.11,,
-function,Py_XNewRef,3.10,,
+data,Py_UTF8Mode,3.8,,
+func,Py_VaBuildValue,3.2,,
+data,Py_Version,3.11,,
+func,Py_XNewRef,3.10,,
 type,Py_buffer,3.11,,full-abi
 type,Py_intptr_t,3.2,,
 type,Py_ssize_t,3.2,,
diff --git a/Doc/deprecations/c-api-pending-removal-in-3.14.rst b/Doc/deprecations/c-api-pending-removal-in-3.14.rst
new file mode 100644
index 00000000000000..d16da66c29abe7
--- /dev/null
+++ b/Doc/deprecations/c-api-pending-removal-in-3.14.rst
@@ -0,0 +1,72 @@
+Pending Removal in Python 3.14
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* The ``ma_version_tag`` field in :c:type:`PyDictObject` for extension modules
+  (:pep:`699`; :gh:`101193`).
+
+* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
+  bases (:gh:`95388`).
+
+* Functions to configure Python's initialization, deprecated in Python 3.11:
+
+  * :c:func:`!PySys_SetArgvEx()`:
+    Set :c:member:`PyConfig.argv` instead.
+  * :c:func:`!PySys_SetArgv()`:
+    Set :c:member:`PyConfig.argv` instead.
+  * :c:func:`!Py_SetProgramName()`:
+    Set :c:member:`PyConfig.program_name` instead.
+  * :c:func:`!Py_SetPythonHome()`:
+    Set :c:member:`PyConfig.home` instead.
+
+  The :c:func:`Py_InitializeFromConfig` API should be used with
+  :c:type:`PyConfig` instead.
+
+* Global configuration variables:
+
+  * :c:var:`Py_DebugFlag`:
+    Use :c:member:`PyConfig.parser_debug` instead.
+  * :c:var:`Py_VerboseFlag`:
+    Use :c:member:`PyConfig.verbose` instead.
+  * :c:var:`Py_QuietFlag`:
+    Use :c:member:`PyConfig.quiet` instead.
+  * :c:var:`Py_InteractiveFlag`:
+    Use :c:member:`PyConfig.interactive` instead.
+  * :c:var:`Py_InspectFlag`:
+    Use :c:member:`PyConfig.inspect` instead.
+  * :c:var:`Py_OptimizeFlag`:
+    Use :c:member:`PyConfig.optimization_level` instead.
+  * :c:var:`Py_NoSiteFlag`:
+    Use :c:member:`PyConfig.site_import` instead.
+  * :c:var:`Py_BytesWarningFlag`:
+    Use :c:member:`PyConfig.bytes_warning` instead.
+  * :c:var:`Py_FrozenFlag`:
+    Use :c:member:`PyConfig.pathconfig_warnings` instead.
+  * :c:var:`Py_IgnoreEnvironmentFlag`:
+    Use :c:member:`PyConfig.use_environment` instead.
+  * :c:var:`Py_DontWriteBytecodeFlag`:
+    Use :c:member:`PyConfig.write_bytecode` instead.
+  * :c:var:`Py_NoUserSiteDirectory`:
+    Use :c:member:`PyConfig.user_site_directory` instead.
+  * :c:var:`Py_UnbufferedStdioFlag`:
+    Use :c:member:`PyConfig.buffered_stdio` instead.
+  * :c:var:`Py_HashRandomizationFlag`:
+    Use :c:member:`PyConfig.use_hash_seed`
+    and :c:member:`PyConfig.hash_seed` instead.
+  * :c:var:`Py_IsolatedFlag`:
+    Use :c:member:`PyConfig.isolated` instead.
+  * :c:var:`Py_LegacyWindowsFSEncodingFlag`:
+    Use :c:member:`PyPreConfig.legacy_windows_fs_encoding` instead.
+  * :c:var:`Py_LegacyWindowsStdioFlag`:
+    Use :c:member:`PyConfig.legacy_windows_stdio` instead.
+  * :c:var:`!Py_FileSystemDefaultEncoding`:
+    Use :c:member:`PyConfig.filesystem_encoding` instead.
+  * :c:var:`!Py_HasFileSystemDefaultEncoding`:
+    Use :c:member:`PyConfig.filesystem_encoding` instead.
+  * :c:var:`!Py_FileSystemDefaultEncodeErrors`:
+    Use :c:member:`PyConfig.filesystem_errors` instead.
+  * :c:var:`!Py_UTF8Mode`:
+    Use :c:member:`PyPreConfig.utf8_mode` instead.
+    (see :c:func:`Py_PreInitialize`)
+
+  The :c:func:`Py_InitializeFromConfig` API should be used with
+  :c:type:`PyConfig` instead.
diff --git a/Doc/deprecations/c-api-pending-removal-in-3.15.rst b/Doc/deprecations/c-api-pending-removal-in-3.15.rst
new file mode 100644
index 00000000000000..fcb703e66fe9eb
--- /dev/null
+++ b/Doc/deprecations/c-api-pending-removal-in-3.15.rst
@@ -0,0 +1,27 @@
+Pending Removal in Python 3.15
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+* The bundled copy of ``libmpdecimal``.
+* The :c:func:`PyImport_ImportModuleNoBlock`:
+  Use :c:func:`PyImport_ImportModule` instead.
+* :c:func:`PyWeakref_GetObject` and :c:func:`PyWeakref_GET_OBJECT`:
+  Use :c:func:`PyWeakref_GetRef` instead.
+* :c:type:`Py_UNICODE` type and the :c:macro:`!Py_UNICODE_WIDE` macro:
+  Use :c:type:`wchar_t` instead.
+* Python initialization functions:
+
+  * :c:func:`PySys_ResetWarnOptions`:
+    Clear :data:`sys.warnoptions` and :data:`!warnings.filters` instead.
+  * :c:func:`Py_GetExecPrefix`:
+    Get :data:`sys.base_exec_prefix` and :data:`sys.exec_prefix` instead.
+  * :c:func:`Py_GetPath`:
+    Get :data:`sys.path` instead.
+  * :c:func:`Py_GetPrefix`:
+    Get :data:`sys.base_prefix` and :data:`sys.prefix` instead.
+  * :c:func:`Py_GetProgramFullPath`:
+    Get :data:`sys.executable` instead.
+  * :c:func:`Py_GetProgramName`:
+    Get :data:`sys.executable` instead.
+  * :c:func:`Py_GetPythonHome`:
+    Get :c:member:`PyConfig.home`
+    or the :envvar:`PYTHONHOME` environment variable instead.
diff --git a/Doc/deprecations/c-api-pending-removal-in-future.rst b/Doc/deprecations/c-api-pending-removal-in-future.rst
new file mode 100644
index 00000000000000..0c3ae52b87ff74
--- /dev/null
+++ b/Doc/deprecations/c-api-pending-removal-in-future.rst
@@ -0,0 +1,51 @@
+Pending Removal in Future Versions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The following APIs are deprecated and will be removed,
+although there is currently no date scheduled for their removal.
+
+* :c:macro:`Py_TPFLAGS_HAVE_FINALIZE`:
+  Unneeded since Python 3.8.
+* :c:func:`PyErr_Fetch`:
+  Use :c:func:`PyErr_GetRaisedException` instead.
+* :c:func:`PyErr_NormalizeException`:
+  Use :c:func:`PyErr_GetRaisedException` instead.
+* :c:func:`PyErr_Restore`:
+  Use :c:func:`PyErr_SetRaisedException` instead.
+* :c:func:`PyModule_GetFilename`:
+  Use :c:func:`PyModule_GetFilenameObject` instead.
+* :c:func:`PyOS_AfterFork`:
+  Use :c:func:`PyOS_AfterFork_Child` instead.
+* :c:func:`PySlice_GetIndicesEx`:
+  Use :c:func:`PySlice_Unpack` and :c:func:`PySlice_AdjustIndices` instead.
+* :c:func:`!PyUnicode_AsDecodedObject`:
+  Use :c:func:`PyCodec_Decode` instead.
+* :c:func:`!PyUnicode_AsDecodedUnicode`:
+  Use :c:func:`PyCodec_Decode` instead.
+* :c:func:`!PyUnicode_AsEncodedObject`:
+  Use :c:func:`PyCodec_Encode` instead.
+* :c:func:`!PyUnicode_AsEncodedUnicode`:
+  Use :c:func:`PyCodec_Encode` instead.
+* :c:func:`PyUnicode_READY`:
+  Unneeded since Python 3.12
+* :c:func:`!PyErr_Display`:
+  Use :c:func:`PyErr_DisplayException` instead.
+* :c:func:`!_PyErr_ChainExceptions`:
+  Use :c:func:`!_PyErr_ChainExceptions1` instead.
+* :c:member:`!PyBytesObject.ob_shash` member:
+  call :c:func:`PyObject_Hash` instead.
+* :c:member:`!PyDictObject.ma_version_tag` member.
+* Thread Local Storage (TLS) API:
+
+  * :c:func:`PyThread_create_key`:
+    Use :c:func:`PyThread_tss_alloc` instead.
+  * :c:func:`PyThread_delete_key`:
+    Use :c:func:`PyThread_tss_free` instead.
+  * :c:func:`PyThread_set_key_value`:
+    Use :c:func:`PyThread_tss_set` instead.
+  * :c:func:`PyThread_get_key_value`:
+    Use :c:func:`PyThread_tss_get` instead.
+  * :c:func:`PyThread_delete_key_value`:
+    Use :c:func:`PyThread_tss_delete` instead.
+  * :c:func:`PyThread_ReInitTLS`:
+    Unneeded since Python 3.7.
diff --git a/Doc/deprecations/index.rst b/Doc/deprecations/index.rst
new file mode 100644
index 00000000000000..5aa7062aca2ca6
--- /dev/null
+++ b/Doc/deprecations/index.rst
@@ -0,0 +1,19 @@
+Deprecations
+============
+
+.. include:: pending-removal-in-3.14.rst
+
+.. include:: pending-removal-in-3.15.rst
+
+.. include:: pending-removal-in-3.16.rst
+
+.. include:: pending-removal-in-future.rst
+
+C API Deprecations
+------------------
+
+.. include:: c-api-pending-removal-in-3.14.rst
+
+.. include:: c-api-pending-removal-in-3.15.rst
+
+.. include:: c-api-pending-removal-in-future.rst
diff --git a/Doc/deprecations/pending-removal-in-3.13.rst b/Doc/deprecations/pending-removal-in-3.13.rst
new file mode 100644
index 00000000000000..89790497816e83
--- /dev/null
+++ b/Doc/deprecations/pending-removal-in-3.13.rst
@@ -0,0 +1,52 @@
+Pending Removal in Python 3.13
+------------------------------
+
+Modules (see :pep:`594`):
+
+* :mod:`!aifc`
+* :mod:`!audioop`
+* :mod:`!cgi`
+* :mod:`!cgitb`
+* :mod:`!chunk`
+* :mod:`!crypt`
+* :mod:`!imghdr`
+* :mod:`!mailcap`
+* :mod:`!msilib`
+* :mod:`!nis`
+* :mod:`!nntplib`
+* :mod:`!ossaudiodev`
+* :mod:`!pipes`
+* :mod:`!sndhdr`
+* :mod:`!spwd`
+* :mod:`!sunau`
+* :mod:`!telnetlib`
+* :mod:`!uu`
+* :mod:`!xdrlib`
+
+Other modules:
+
+* :mod:`!lib2to3`, and the :program:`2to3` program (:gh:`84540`)
+
+APIs:
+
+* :class:`!configparser.LegacyInterpolation` (:gh:`90765`)
+* ``locale.resetlocale()`` (:gh:`90817`)
+* :meth:`!turtle.RawTurtle.settiltangle` (:gh:`50096`)
+* :func:`!unittest.findTestCases` (:gh:`50096`)
+* :func:`!unittest.getTestCaseNames` (:gh:`50096`)
+* :func:`!unittest.makeSuite` (:gh:`50096`)
+* :meth:`!unittest.TestProgram.usageExit` (:gh:`67048`)
+* :class:`!webbrowser.MacOSX` (:gh:`86421`)
+* :class:`classmethod` descriptor chaining (:gh:`89519`)
+* :mod:`importlib.resources` deprecated methods:
+
+  * ``contents()``
+  * ``is_resource()``
+  * ``open_binary()``
+  * ``open_text()``
+  * ``path()``
+  * ``read_binary()``
+  * ``read_text()``
+
+  Use :func:`importlib.resources.files` instead.  Refer to `importlib-resources: Migrating from Legacy
+  <https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy>`_ (:gh:`106531`)
diff --git a/Doc/deprecations/pending-removal-in-3.14.rst b/Doc/deprecations/pending-removal-in-3.14.rst
new file mode 100644
index 00000000000000..15606f61cf8b0c
--- /dev/null
+++ b/Doc/deprecations/pending-removal-in-3.14.rst
@@ -0,0 +1,105 @@
+Pending Removal in Python 3.14
+------------------------------
+
+* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
+  of :class:`!argparse.BooleanOptionalAction` are deprecated
+  and will be removed in 3.14.
+  (Contributed by Nikita Sobolev in :gh:`92248`.)
+
+* :mod:`ast`: The following features have been deprecated in documentation
+  since Python 3.8, now cause a :exc:`DeprecationWarning` to be emitted at
+  runtime when they are accessed or used, and will be removed in Python 3.14:
+
+  * :class:`!ast.Num`
+  * :class:`!ast.Str`
+  * :class:`!ast.Bytes`
+  * :class:`!ast.NameConstant`
+  * :class:`!ast.Ellipsis`
+
+  Use :class:`ast.Constant` instead.
+  (Contributed by Serhiy Storchaka in :gh:`90953`.)
+
+* :mod:`asyncio`:
+
+  * The child watcher classes :class:`~asyncio.MultiLoopChildWatcher`,
+    :class:`~asyncio.FastChildWatcher`, :class:`~asyncio.AbstractChildWatcher`
+    and :class:`~asyncio.SafeChildWatcher` are deprecated and
+    will be removed in Python 3.14.
+    (Contributed by Kumar Aditya in :gh:`94597`.)
+
+  * :func:`asyncio.set_child_watcher`, :func:`asyncio.get_child_watcher`,
+    :meth:`asyncio.AbstractEventLoopPolicy.set_child_watcher` and
+    :meth:`asyncio.AbstractEventLoopPolicy.get_child_watcher` are deprecated
+    and will be removed in Python 3.14.
+    (Contributed by Kumar Aditya in :gh:`94597`.)
+
+  * The :meth:`~asyncio.get_event_loop` method of the
+    default event loop policy now emits a :exc:`DeprecationWarning` if there
+    is no current event loop set and it decides to create one.
+    (Contributed by Serhiy Storchaka and Guido van Rossum in :gh:`100160`.)
+
+* :mod:`collections.abc`: Deprecated :class:`~collections.abc.ByteString`.
+  Prefer :class:`!Sequence` or :class:`~collections.abc.Buffer`.
+  For use in typing, prefer a union, like ``bytes | bytearray``,
+  or :class:`collections.abc.Buffer`.
+  (Contributed by Shantanu Jain in :gh:`91896`.)
+
+* :mod:`email`: Deprecated the *isdst* parameter in :func:`email.utils.localtime`.
+  (Contributed by Alan Williams in :gh:`72346`.)
+
+* :mod:`importlib.abc` deprecated classes:
+
+  * :class:`!importlib.abc.ResourceReader`
+  * :class:`!importlib.abc.Traversable`
+  * :class:`!importlib.abc.TraversableResources`
+
+  Use :mod:`importlib.resources.abc` classes instead:
+
+  * :class:`importlib.resources.abc.Traversable`
+  * :class:`importlib.resources.abc.TraversableResources`
+
+  (Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
+
+* :mod:`itertools` had undocumented, inefficient, historically buggy,
+  and inconsistent support for copy, deepcopy, and pickle operations.
+  This will be removed in 3.14 for a significant reduction in code
+  volume and maintenance burden.
+  (Contributed by Raymond Hettinger in :gh:`101588`.)
+
+* :mod:`multiprocessing`: The default start method will change to a safer one on
+  Linux, BSDs, and other non-macOS POSIX platforms where ``'fork'`` is currently
+  the default (:gh:`84559`). Adding a runtime warning about this was deemed too
+  disruptive as the majority of code is not expected to care. Use the
+  :func:`~multiprocessing.get_context` or
+  :func:`~multiprocessing.set_start_method` APIs to explicitly specify when
+  your code *requires* ``'fork'``.  See :ref:`multiprocessing-start-methods`.
+
+* :mod:`pathlib`: :meth:`~pathlib.PurePath.is_relative_to` and
+  :meth:`~pathlib.PurePath.relative_to`: passing additional arguments is
+  deprecated.
+
+* :mod:`pkgutil`: :func:`~pkgutil.find_loader` and :func:`~pkgutil.get_loader`
+  now raise :exc:`DeprecationWarning`;
+  use :func:`importlib.util.find_spec` instead.
+  (Contributed by Nikita Sobolev in :gh:`97850`.)
+
+* :mod:`pty`:
+
+  * ``master_open()``: use :func:`pty.openpty`.
+  * ``slave_open()``: use :func:`pty.openpty`.
+
+* :mod:`sqlite3`:
+
+  * :data:`~sqlite3.version` and :data:`~sqlite3.version_info`.
+
+  * :meth:`~sqlite3.Cursor.execute` and :meth:`~sqlite3.Cursor.executemany`
+    if :ref:`named placeholders <sqlite3-placeholders>` are used and
+    *parameters* is a sequence instead of a :class:`dict`.
+
+* :mod:`typing`: :class:`~typing.ByteString`, deprecated since Python 3.9,
+  now causes a :exc:`DeprecationWarning` to be emitted when it is used.
+
+* :mod:`urllib`:
+  :class:`!urllib.parse.Quoter` is deprecated: it was not intended to be a
+  public API.
+  (Contributed by Gregory P. Smith in :gh:`88168`.)
diff --git a/Doc/deprecations/pending-removal-in-3.15.rst b/Doc/deprecations/pending-removal-in-3.15.rst
new file mode 100644
index 00000000000000..f0b184b6c804cd
--- /dev/null
+++ b/Doc/deprecations/pending-removal-in-3.15.rst
@@ -0,0 +1,89 @@
+Pending Removal in Python 3.15
+------------------------------
+
+* The import system:
+
+  * Setting :attr:`~module.__cached__` on a module while
+    failing to set :attr:`__spec__.cached <importlib.machinery.ModuleSpec.cached>`
+    is deprecated. In Python 3.15, :attr:`!__cached__` will cease to be set or
+    take into consideration by the import system or standard library. (:gh:`97879`)
+
+  * Setting :attr:`~module.__package__` on a module while
+    failing to set :attr:`__spec__.parent <importlib.machinery.ModuleSpec.parent>`
+    is deprecated. In Python 3.15, :attr:`!__package__` will cease to be set or
+    take into consideration by the import system or standard library. (:gh:`97879`)
+
+* :mod:`ctypes`:
+
+  * The undocumented :func:`!ctypes.SetPointerType` function
+    has been deprecated since Python 3.13.
+
+* :mod:`http.server`:
+
+  * The obsolete and rarely used :class:`~http.server.CGIHTTPRequestHandler`
+    has been deprecated since Python 3.13.
+    No direct replacement exists.
+    *Anything* is better than CGI to interface
+    a web server with a request handler.
+
+  * The :option:`!--cgi` flag to the :program:`python -m http.server`
+    command-line interface has been deprecated since Python 3.13.
+
+* :class:`locale`:
+
+  * The :func:`~locale.getdefaultlocale` function
+    has been deprecated since Python 3.11.
+    Its removal was originally planned for Python 3.13 (:gh:`90817`),
+    but has been postponed to Python 3.15.
+    Use :func:`~locale.getlocale`, :func:`~locale.setlocale`,
+    and :func:`~locale.getencoding` instead.
+    (Contributed by Hugo van Kemenade in :gh:`111187`.)
+
+* :mod:`pathlib`:
+
+  * :meth:`.PurePath.is_reserved`
+    has been deprecated since Python 3.13.
+    Use :func:`os.path.isreserved` to detect reserved paths on Windows.
+
+* :mod:`platform`:
+
+  * :func:`~platform.java_ver` has been deprecated since Python 3.13.
+    This function is only useful for Jython support, has a confusing API,
+    and is largely untested.
+
+* :mod:`threading`:
+
+  * :func:`~threading.RLock` will take no arguments in Python 3.15.
+    Passing any arguments has been deprecated since Python 3.14,
+    as the  Python version does not permit any arguments,
+    but the C version allows any number of positional or keyword arguments,
+    ignoring every argument.
+
+* :mod:`types`:
+
+  * :class:`types.CodeType`: Accessing :attr:`~codeobject.co_lnotab` was
+    deprecated in :pep:`626`
+    since 3.10 and was planned to be removed in 3.12,
+    but it only got a proper :exc:`DeprecationWarning` in 3.12.
+    May be removed in 3.15.
+    (Contributed by Nikita Sobolev in :gh:`101866`.)
+
+* :mod:`typing`:
+
+  * The undocumented keyword argument syntax for creating
+    :class:`~typing.NamedTuple` classes
+    (e.g. ``Point = NamedTuple("Point", x=int, y=int)``)
+    has been deprecated since Python 3.13.
+    Use the class-based syntax or the functional syntax instead.
+
+  * The :func:`typing.no_type_check_decorator` decorator function
+    has been deprecated since Python 3.13.
+    After eight years in the :mod:`typing` module,
+    it has yet to be supported by any major type checker.
+
+* :mod:`wave`:
+
+  * The :meth:`~wave.Wave_read.getmark`, :meth:`!setmark`,
+    and :meth:`~wave.Wave_read.getmarkers` methods of
+    the :class:`~wave.Wave_read` and :class:`~wave.Wave_write` classes
+    have been deprecated since Python 3.13.
diff --git a/Doc/deprecations/pending-removal-in-3.16.rst b/Doc/deprecations/pending-removal-in-3.16.rst
new file mode 100644
index 00000000000000..6f6954b783a1ae
--- /dev/null
+++ b/Doc/deprecations/pending-removal-in-3.16.rst
@@ -0,0 +1,56 @@
+Pending removal in Python 3.16
+------------------------------
+
+* The import system:
+
+  * Setting :attr:`~module.__loader__` on a module while
+    failing to set :attr:`__spec__.loader <importlib.machinery.ModuleSpec.loader>`
+    is deprecated. In Python 3.16, :attr:`!__loader__` will cease to be set or
+    taken into consideration by the import system or the standard library.
+
+* :mod:`array`:
+
+  * The ``'u'`` format code (:c:type:`wchar_t`)
+    has been deprecated in documentation since Python 3.3
+    and at runtime since Python 3.13.
+    Use the ``'w'`` format code (:c:type:`Py_UCS4`)
+    for Unicode characters instead.
+
+* :mod:`asyncio`:
+
+  * :func:`!asyncio.iscoroutinefunction` is deprecated
+    and will be removed in Python 3.16,
+    use :func:`inspect.iscoroutinefunction` instead.
+    (Contributed by Jiahao Li and Kumar Aditya in :gh:`122875`.)
+
+* :mod:`builtins`:
+
+  * Bitwise inversion on boolean types, ``~True`` or ``~False``
+    has been deprecated since Python 3.12,
+    as it produces surprising and unintuitive results (``-2`` and ``-1``).
+    Use ``not x`` instead for the logical negation of a Boolean.
+    In the rare case that you need the bitwise inversion of
+    the underlying integer, convert to ``int`` explicitly (``~int(x)``).
+
+* :mod:`shutil`:
+
+  * The :class:`!ExecError` exception
+    has been deprecated since Python 3.14.
+    It has not been used by any function in :mod:`!shutil` since Python 3.4,
+    and is now an alias of :exc:`RuntimeError`.
+
+* :mod:`symtable`:
+
+  * The :meth:`Class.get_methods <symtable.Class.get_methods>` method
+    has been deprecated since Python 3.14.
+
+* :mod:`sys`:
+
+  * The :func:`~sys._enablelegacywindowsfsencoding` function
+    has been deprecated since Python 3.13.
+    Use the :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment variable instead.
+
+* :mod:`tarfile`:
+
+  * The undocumented and unused :attr:`!TarFile.tarfile` attribute
+    has been deprecated since Python 3.13.
diff --git a/Doc/deprecations/pending-removal-in-future.rst b/Doc/deprecations/pending-removal-in-future.rst
new file mode 100644
index 00000000000000..3f9cf6f208221a
--- /dev/null
+++ b/Doc/deprecations/pending-removal-in-future.rst
@@ -0,0 +1,155 @@
+Pending Removal in Future Versions
+----------------------------------
+
+The following APIs will be removed in the future,
+although there is currently no date scheduled for their removal.
+
+* :mod:`argparse`: Nesting argument groups and nesting mutually exclusive
+  groups are deprecated.
+
+* :mod:`array`'s ``'u'`` format code (:gh:`57281`)
+
+* :mod:`builtins`:
+
+  * ``bool(NotImplemented)``.
+  * Generators: ``throw(type, exc, tb)`` and ``athrow(type, exc, tb)``
+    signature is deprecated: use ``throw(exc)`` and ``athrow(exc)`` instead,
+    the single argument signature.
+  * Currently Python accepts numeric literals immediately followed by keywords,
+    for example ``0in x``, ``1or x``, ``0if 1else 2``.  It allows confusing and
+    ambiguous expressions like ``[0x1for x in y]`` (which can be interpreted as
+    ``[0x1 for x in y]`` or ``[0x1f or x in y]``).  A syntax warning is raised
+    if the numeric literal is immediately followed by one of keywords
+    :keyword:`and`, :keyword:`else`, :keyword:`for`, :keyword:`if`,
+    :keyword:`in`, :keyword:`is` and :keyword:`or`.  In a future release it
+    will be changed to a syntax error. (:gh:`87999`)
+  * Support for ``__index__()`` and ``__int__()`` method returning non-int type:
+    these methods will be required to return an instance of a strict subclass of
+    :class:`int`.
+  * Support for ``__float__()`` method returning a strict subclass of
+    :class:`float`: these methods will be required to return an instance of
+    :class:`float`.
+  * Support for ``__complex__()`` method returning a strict subclass of
+    :class:`complex`: these methods will be required to return an instance of
+    :class:`complex`.
+  * Delegation of ``int()`` to ``__trunc__()`` method.
+  * Passing a complex number as the *real* or *imag* argument in the
+    :func:`complex` constructor is now deprecated; it should only be passed
+    as a single positional argument.
+    (Contributed by Serhiy Storchaka in :gh:`109218`.)
+
+* :mod:`calendar`: ``calendar.January`` and ``calendar.February`` constants are
+  deprecated and replaced by :data:`calendar.JANUARY` and
+  :data:`calendar.FEBRUARY`.
+  (Contributed by Prince Roshan in :gh:`103636`.)
+
+* :attr:`codeobject.co_lnotab`: use the :meth:`codeobject.co_lines` method
+  instead.
+
+* :mod:`datetime`:
+
+  * :meth:`~datetime.datetime.utcnow`:
+    use ``datetime.datetime.now(tz=datetime.UTC)``.
+  * :meth:`~datetime.datetime.utcfromtimestamp`:
+    use ``datetime.datetime.fromtimestamp(timestamp, tz=datetime.UTC)``.
+
+* :mod:`gettext`: Plural value must be an integer.
+
+* :mod:`importlib`:
+
+  * ``load_module()`` method: use ``exec_module()`` instead.
+  * :func:`~importlib.util.cache_from_source` *debug_override* parameter is
+    deprecated: use the *optimization* parameter instead.
+
+* :mod:`importlib.metadata`:
+
+  * ``EntryPoints`` tuple interface.
+  * Implicit ``None`` on return values.
+
+* :mod:`logging`: the ``warn()`` method has been deprecated
+  since Python 3.3, use :meth:`~logging.warning` instead.
+
+* :mod:`mailbox`: Use of StringIO input and text mode is deprecated, use
+  BytesIO and binary mode instead.
+
+* :mod:`os`: Calling :func:`os.register_at_fork` in multi-threaded process.
+
+* :class:`!pydoc.ErrorDuringImport`: A tuple value for *exc_info* parameter is
+  deprecated, use an exception instance.
+
+* :mod:`re`: More strict rules are now applied for numerical group references
+  and group names in regular expressions.  Only sequence of ASCII digits is now
+  accepted as a numerical reference.  The group name in bytes patterns and
+  replacement strings can now only contain ASCII letters and digits and
+  underscore.
+  (Contributed by Serhiy Storchaka in :gh:`91760`.)
+
+* :mod:`!sre_compile`, :mod:`!sre_constants` and :mod:`!sre_parse` modules.
+
+* :mod:`shutil`: :func:`~shutil.rmtree`'s *onerror* parameter is deprecated in
+  Python 3.12; use the *onexc* parameter instead.
+
+* :mod:`ssl` options and protocols:
+
+  * :class:`ssl.SSLContext` without protocol argument is deprecated.
+  * :class:`ssl.SSLContext`: :meth:`~ssl.SSLContext.set_npn_protocols` and
+    :meth:`!selected_npn_protocol` are deprecated: use ALPN
+    instead.
+  * ``ssl.OP_NO_SSL*`` options
+  * ``ssl.OP_NO_TLS*`` options
+  * ``ssl.PROTOCOL_SSLv3``
+  * ``ssl.PROTOCOL_TLS``
+  * ``ssl.PROTOCOL_TLSv1``
+  * ``ssl.PROTOCOL_TLSv1_1``
+  * ``ssl.PROTOCOL_TLSv1_2``
+  * ``ssl.TLSVersion.SSLv3``
+  * ``ssl.TLSVersion.TLSv1``
+  * ``ssl.TLSVersion.TLSv1_1``
+
+* :func:`sysconfig.is_python_build` *check_home* parameter is deprecated and
+  ignored.
+
+* :mod:`threading` methods:
+
+  * :meth:`!threading.Condition.notifyAll`: use :meth:`~threading.Condition.notify_all`.
+  * :meth:`!threading.Event.isSet`: use :meth:`~threading.Event.is_set`.
+  * :meth:`!threading.Thread.isDaemon`, :meth:`threading.Thread.setDaemon`:
+    use :attr:`threading.Thread.daemon` attribute.
+  * :meth:`!threading.Thread.getName`, :meth:`threading.Thread.setName`:
+    use :attr:`threading.Thread.name` attribute.
+  * :meth:`!threading.currentThread`: use :meth:`threading.current_thread`.
+  * :meth:`!threading.activeCount`: use :meth:`threading.active_count`.
+
+* :class:`typing.Text` (:gh:`92332`).
+
+* :class:`unittest.IsolatedAsyncioTestCase`: it is deprecated to return a value
+  that is not ``None`` from a test case.
+
+* :mod:`urllib.parse` deprecated functions: :func:`~urllib.parse.urlparse` instead
+
+  * ``splitattr()``
+  * ``splithost()``
+  * ``splitnport()``
+  * ``splitpasswd()``
+  * ``splitport()``
+  * ``splitquery()``
+  * ``splittag()``
+  * ``splittype()``
+  * ``splituser()``
+  * ``splitvalue()``
+  * ``to_bytes()``
+
+* :mod:`urllib.request`: :class:`~urllib.request.URLopener` and
+  :class:`~urllib.request.FancyURLopener` style of invoking requests is
+  deprecated. Use newer :func:`~urllib.request.urlopen` functions and methods.
+
+* :mod:`wsgiref`: ``SimpleHandler.stdout.write()`` should not do partial
+  writes.
+
+* :mod:`xml.etree.ElementTree`: Testing the truth value of an
+  :class:`~xml.etree.ElementTree.Element` is deprecated. In a future release it
+  will always return ``True``. Prefer explicit ``len(elem)`` or
+  ``elem is not None`` tests instead.
+
+* :meth:`zipimport.zipimporter.load_module` is deprecated:
+  use :meth:`~zipimport.zipimporter.exec_module` instead.
diff --git a/Doc/extending/extending.rst b/Doc/extending/extending.rst
index b70e1b1fe57e67..b0493bed75b151 100644
--- a/Doc/extending/extending.rst
+++ b/Doc/extending/extending.rst
@@ -868,7 +868,7 @@ It is important to call :c:func:`free` at the right time.  If a block's address
 is forgotten but :c:func:`free` is not called for it, the memory it occupies
 cannot be reused until the program terminates.  This is called a :dfn:`memory
 leak`.  On the other hand, if a program calls :c:func:`free` for a block and then
-continues to use the block, it creates a conflict with re-use of the block
+continues to use the block, it creates a conflict with reuse of the block
 through another :c:func:`malloc` call.  This is called :dfn:`using freed memory`.
 It has the same bad consequences as referencing uninitialized data --- core
 dumps, wrong results, mysterious crashes.
diff --git a/Doc/extending/newtypes.rst b/Doc/extending/newtypes.rst
index 473a418809cff1..7f57a3a6aac0ed 100644
--- a/Doc/extending/newtypes.rst
+++ b/Doc/extending/newtypes.rst
@@ -296,7 +296,7 @@ An interesting advantage of using the :c:member:`~PyTypeObject.tp_members` table
 descriptors that are used at runtime is that any attribute defined this way can
 have an associated doc string simply by providing the text in the table.  An
 application can use the introspection API to retrieve the descriptor from the
-class object, and get the doc string using its :attr:`!__doc__` attribute.
+class object, and get the doc string using its :attr:`~type.__doc__` attribute.
 
 As with the :c:member:`~PyTypeObject.tp_methods` table, a sentinel entry with a :c:member:`~PyMethodDef.ml_name` value
 of ``NULL`` is required.
@@ -545,7 +545,7 @@ performance-critical objects (such as numbers).
 .. seealso::
    Documentation for the :mod:`weakref` module.
 
-For an object to be weakly referencable, the extension type must set the
+For an object to be weakly referenceable, the extension type must set the
 ``Py_TPFLAGS_MANAGED_WEAKREF`` bit of the :c:member:`~PyTypeObject.tp_flags`
 field. The legacy :c:member:`~PyTypeObject.tp_weaklistoffset` field should
 be left as zero.
diff --git a/Doc/extending/newtypes_tutorial.rst b/Doc/extending/newtypes_tutorial.rst
index 7eba9759119b3b..bcf938f117d148 100644
--- a/Doc/extending/newtypes_tutorial.rst
+++ b/Doc/extending/newtypes_tutorial.rst
@@ -144,7 +144,7 @@ only used for variable-sized objects and should otherwise be zero.
    If you want your type to be subclassable from Python, and your type has the same
    :c:member:`~PyTypeObject.tp_basicsize` as its base type, you may have problems with multiple
    inheritance.  A Python subclass of your type will have to list your type first
-   in its :attr:`~class.__bases__`, or else it will not be able to call your type's
+   in its :attr:`~type.__bases__`, or else it will not be able to call your type's
    :meth:`~object.__new__` method without getting an error.  You can avoid this problem by
    ensuring that your type has a larger value for :c:member:`~PyTypeObject.tp_basicsize` than its
    base type does.  Most of the time, this will be true anyway, because either your
@@ -447,7 +447,7 @@ Further, the attributes can be deleted, setting the C pointers to ``NULL``.  Eve
 though we can make sure the members are initialized to non-``NULL`` values, the
 members can be set to ``NULL`` if the attributes are deleted.
 
-We define a single method, :meth:`!Custom.name()`, that outputs the objects name as the
+We define a single method, :meth:`!Custom.name`, that outputs the objects name as the
 concatenation of the first and last names. ::
 
    static PyObject *
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index c8beb64e39bc1a..e2710fab9cf800 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -70,7 +70,7 @@ operations. This means that as far as floating-point operations are concerned,
 Python behaves like many popular languages including C and Java.
 
 Many numbers that can be written easily in decimal notation cannot be expressed
-exactly in binary floating-point.  For example, after::
+exactly in binary floating point.  For example, after::
 
     >>> x = 1.2
 
@@ -87,7 +87,7 @@ which is exactly::
 The typical precision of 53 bits provides Python floats with 15--16
 decimal digits of accuracy.
 
-For a fuller explanation, please see the :ref:`floating point arithmetic
+For a fuller explanation, please see the :ref:`floating-point arithmetic
 <tut-fp-issues>` chapter in the Python tutorial.
 
 
@@ -328,7 +328,7 @@ Can Python be compiled to machine code, C or some other language?
 -----------------------------------------------------------------
 
 `Cython <https://cython.org/>`_ compiles a modified version of Python with
-optional annotations into C extensions.  `Nuitka <https://www.nuitka.net/>`_ is
+optional annotations into C extensions.  `Nuitka <https://nuitka.net/>`_ is
 an up-and-coming compiler of Python into C++ code, aiming to support the full
 Python language.
 
@@ -345,7 +345,7 @@ to perform a garbage collection, obtain debugging statistics, and tune the
 collector's parameters.
 
 Other implementations (such as `Jython <https://www.jython.org>`_ or
-`PyPy <https://www.pypy.org>`_), however, can rely on a different mechanism
+`PyPy <https://pypy.org>`_), however, can rely on a different mechanism
 such as a full-blown garbage collector.  This difference can cause some
 subtle porting problems if your Python code depends on the behavior of the
 reference counting implementation.
diff --git a/Doc/faq/extending.rst b/Doc/faq/extending.rst
index 1cff2c4091df06..3147fda7c37124 100644
--- a/Doc/faq/extending.rst
+++ b/Doc/faq/extending.rst
@@ -246,13 +246,12 @@ Then, when you run GDB:
 I want to compile a Python module on my Linux system, but some files are missing. Why?
 --------------------------------------------------------------------------------------
 
-Most packaged versions of Python don't include the
-:file:`/usr/lib/python2.{x}/config/` directory, which contains various files
+Most packaged versions of Python omit some files
 required for compiling Python extensions.
 
-For Red Hat, install the python-devel RPM to get the necessary files.
+For Red Hat, install the python3-devel RPM to get the necessary files.
 
-For Debian, run ``apt-get install python-dev``.
+For Debian, run ``apt-get install python3-dev``.
 
 How do I tell "incomplete input" from "invalid input"?
 ------------------------------------------------------
diff --git a/Doc/faq/general.rst b/Doc/faq/general.rst
index ec7c2897594999..2a55f6b6fb6181 100644
--- a/Doc/faq/general.rst
+++ b/Doc/faq/general.rst
@@ -122,6 +122,8 @@ available.  Consult `the Python Package Index <https://pypi.org>`_ to
 find packages of interest to you.
 
 
+.. _faq-version-numbering-scheme:
+
 How does the Python version numbering scheme work?
 --------------------------------------------------
 
@@ -183,8 +185,6 @@ information on getting the source code and compiling it.
 How do I get documentation on Python?
 -------------------------------------
 
-.. XXX mention py3k
-
 The standard documentation for the current stable version of Python is available
 at https://docs.python.org/3/.  PDF, plain text, and downloadable HTML versions are
 also available at https://docs.python.org/3/download.html.
@@ -309,10 +309,10 @@ guaranteed that interfaces will remain the same throughout a series of bugfix
 releases.
 
 The latest stable releases can always be found on the `Python download page
-<https://www.python.org/downloads/>`_.  There are two production-ready versions
-of Python: 2.x and 3.x. The recommended version is 3.x, which is supported by
-most widely used libraries.  Although 2.x is still widely used, `it is not
-maintained anymore <https://peps.python.org/pep-0373/>`_.
+<https://www.python.org/downloads/>`_.
+Python 3.x is the recommended version and supported by most widely used libraries.
+Python 2.x :pep:`is not maintained anymore <373>`.
+
 
 How many people are using Python?
 ---------------------------------
diff --git a/Doc/faq/library.rst b/Doc/faq/library.rst
index b959cd73921428..522923572bfbbf 100644
--- a/Doc/faq/library.rst
+++ b/Doc/faq/library.rst
@@ -796,12 +796,12 @@ is simple::
    import random
    random.random()
 
-This returns a random floating point number in the range [0, 1).
+This returns a random floating-point number in the range [0, 1).
 
 There are also many other specialized generators in this module, such as:
 
 * ``randrange(a, b)`` chooses an integer in the range [a, b).
-* ``uniform(a, b)`` chooses a floating point number in the range [a, b).
+* ``uniform(a, b)`` chooses a floating-point number in the range [a, b).
 * ``normalvariate(mean, sdev)`` samples the normal (Gaussian) distribution.
 
 Some higher-level functions operate on sequences directly, such as:
diff --git a/Doc/faq/programming.rst b/Doc/faq/programming.rst
index 0a88c5f6384f2b..776bab1ed5b779 100644
--- a/Doc/faq/programming.rst
+++ b/Doc/faq/programming.rst
@@ -869,7 +869,7 @@ How do I convert a string to a number?
 --------------------------------------
 
 For integers, use the built-in :func:`int` type constructor, e.g. ``int('144')
-== 144``.  Similarly, :func:`float` converts to floating-point,
+== 144``.  Similarly, :func:`float` converts to a floating-point number,
 e.g. ``float('144') == 144.0``.
 
 By default, these interpret the number as decimal, so that ``int('0144') ==
@@ -1013,7 +1013,7 @@ Not as such.
 For simple input parsing, the easiest approach is usually to split the line into
 whitespace-delimited words using the :meth:`~str.split` method of string objects
 and then convert decimal strings to numeric values using :func:`int` or
-:func:`float`.  :meth:`!split()` supports an optional "sep" parameter which is useful
+:func:`float`.  :meth:`!split` supports an optional "sep" parameter which is useful
 if the line uses something other than whitespace as a separator.
 
 For more complicated input parsing, regular expressions are more powerful
@@ -1613,9 +1613,16 @@ method too, and it must do so carefully.  The basic implementation of
            self.__dict__[name] = value
        ...
 
-Most :meth:`!__setattr__` implementations must modify
-:meth:`self.__dict__ <object.__dict__>` to store
-local state for self without causing an infinite recursion.
+Many :meth:`~object.__setattr__` implementations call :meth:`!object.__setattr__` to set
+an attribute on self without causing infinite recursion::
+
+   class X:
+       def __setattr__(self, name, value):
+           # Custom logic here...
+           object.__setattr__(self, name, value)
+
+Alternatively, it is possible to set attributes by inserting
+entries into :attr:`self.__dict__ <object.__dict__>` directly.
 
 
 How do I call a method defined in a base class from a derived class that extends it?
@@ -1741,11 +1748,31 @@ but effective way to define class private variables.  Any identifier of the form
 is textually replaced with ``_classname__spam``, where ``classname`` is the
 current class name with any leading underscores stripped.
 
-This doesn't guarantee privacy: an outside user can still deliberately access
-the "_classname__spam" attribute, and private values are visible in the object's
-``__dict__``.  Many Python programmers never bother to use private variable
-names at all.
+The identifier can be used unchanged within the class, but to access it outside
+the class, the mangled name must be used:
+
+.. code-block:: python
+
+   class A:
+       def __one(self):
+           return 1
+       def two(self):
+           return 2 * self.__one()
 
+   class B(A):
+       def three(self):
+           return 3 * self._A__one()
+
+   four = 4 * A()._A__one()
+
+In particular, this does not guarantee privacy since an outside user can still
+deliberately access the private attribute; many Python programmers never bother
+to use private variable names at all.
+
+.. seealso::
+
+   The :ref:`private name mangling specifications <private-name-mangling>`
+   for details and special cases.
 
 My class defines __del__ but it is not called when I delete the object.
 -----------------------------------------------------------------------
@@ -1879,28 +1906,30 @@ In the standard library code, you will see several common patterns for
 correctly using identity tests:
 
 1) As recommended by :pep:`8`, an identity test is the preferred way to check
-for ``None``.  This reads like plain English in code and avoids confusion with
-other objects that may have boolean values that evaluate to false.
+   for ``None``.  This reads like plain English in code and avoids confusion
+   with other objects that may have boolean values that evaluate to false.
 
 2) Detecting optional arguments can be tricky when ``None`` is a valid input
-value.  In those situations, you can create a singleton sentinel object
-guaranteed to be distinct from other objects.  For example, here is how
-to implement a method that behaves like :meth:`dict.pop`::
+   value.  In those situations, you can create a singleton sentinel object
+   guaranteed to be distinct from other objects.  For example, here is how
+   to implement a method that behaves like :meth:`dict.pop`:
+
+   .. code-block:: python
 
-   _sentinel = object()
+      _sentinel = object()
 
-   def pop(self, key, default=_sentinel):
-       if key in self:
-           value = self[key]
-           del self[key]
-           return value
-       if default is _sentinel:
-           raise KeyError(key)
-       return default
+      def pop(self, key, default=_sentinel):
+          if key in self:
+              value = self[key]
+              del self[key]
+              return value
+          if default is _sentinel:
+              raise KeyError(key)
+          return default
 
 3) Container implementations sometimes need to augment equality tests with
-identity tests.  This prevents the code from being confused by objects such as
-``float('NaN')`` that are not equal to themselves.
+   identity tests.  This prevents the code from being confused by objects
+   such as ``float('NaN')`` that are not equal to themselves.
 
 For example, here is the implementation of
 :meth:`!collections.abc.Sequence.__contains__`::
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index 2846f77feb112d..858c2b39ee5e33 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -110,7 +110,7 @@ Glossary
       :keyword:`yield` expression.
 
       Each :keyword:`yield` temporarily suspends processing, remembering the
-      location execution state (including local variables and pending
+      execution state (including local variables and pending
       try-statements).  When the *asynchronous generator iterator* effectively
       resumes with another awaitable returned by :meth:`~object.__anext__`, it
       picks up where it left off.  See :pep:`492` and :pep:`525`.
@@ -226,6 +226,28 @@ Glossary
       A variable defined in a class and intended to be modified only at
       class level (i.e., not in an instance of the class).
 
+   closure variable
+      A :term:`free variable` referenced from a :term:`nested scope` that is defined in an outer
+      scope rather than being resolved at runtime from the globals or builtin namespaces.
+      May be explicitly defined with the :keyword:`nonlocal` keyword to allow write access,
+      or implicitly defined if the variable is only being read.
+
+      For example, in the ``inner`` function in the following code, both ``x`` and ``print`` are
+      :term:`free variables <free variable>`, but only ``x`` is a *closure variable*::
+
+          def outer():
+              x = 0
+              def inner():
+                  nonlocal x
+                  x += 1
+                  print(x)
+              return inner
+
+      Due to the :attr:`codeobject.co_freevars` attribute (which, despite its name, only
+      includes the names of closure variables rather than listing all referenced free
+      variables), the more general :term:`free variable` term is sometimes used even
+      when the intended meaning is to refer specifically to closure variables.
+
    complex number
       An extension of the familiar real number system in which all numbers are
       expressed as a sum of a real part and an imaginary part.  Imaginary
@@ -238,19 +260,33 @@ Glossary
       advanced mathematical feature.  If you're not aware of a need for them,
       it's almost certain you can safely ignore them.
 
+   context
+      This term has different meanings depending on where and how it is used.
+      Some common meanings:
+
+      * The temporary state or environment established by a :term:`context
+        manager` via a :keyword:`with` statement.
+      * The collection of key­value bindings associated with a particular
+        :class:`contextvars.Context` object and accessed via
+        :class:`~contextvars.ContextVar` objects.  Also see :term:`context
+        variable`.
+      * A :class:`contextvars.Context` object.  Also see :term:`current
+        context`.
+
+   context management protocol
+      The :meth:`~object.__enter__` and :meth:`~object.__exit__` methods called
+      by the :keyword:`with` statement.  See :pep:`343`.
+
    context manager
-      An object which controls the environment seen in a :keyword:`with`
-      statement by defining :meth:`~object.__enter__` and :meth:`~object.__exit__` methods.
-      See :pep:`343`.
+      An object which implements the :term:`context management protocol` and
+      controls the environment seen in a :keyword:`with` statement.  See
+      :pep:`343`.
 
    context variable
-      A variable which can have different values depending on its context.
-      This is similar to Thread-Local Storage in which each execution
-      thread may have a different value for a variable. However, with context
-      variables, there may be several contexts in one execution thread and the
-      main usage for context variables is to keep track of variables in
+      A variable whose value depends on which context is the :term:`current
+      context`.  Values are accessed via :class:`contextvars.ContextVar`
+      objects.  Context variables are primarily used to isolate state between
       concurrent asynchronous tasks.
-      See :mod:`contextvars`.
 
    contiguous
       .. index:: C-contiguous, Fortran contiguous
@@ -284,6 +320,14 @@ Glossary
       is used when necessary to distinguish this implementation from others
       such as Jython or IronPython.
 
+   current context
+      The :term:`context` (:class:`contextvars.Context` object) that is
+      currently used by :class:`~contextvars.ContextVar` objects to access (get
+      or set) the values of :term:`context variables <context variable>`.  Each
+      thread has its own current context.  Frameworks for executing asynchronous
+      tasks (see :mod:`asyncio`) associate each task with a context which
+      becomes the current context whenever the task starts or resumes execution.
+
    decorator
       A function returning another function, usually applied as a function
       transformation using the ``@wrapper`` syntax.  Common examples for
@@ -342,7 +386,7 @@ Glossary
    docstring
       A string literal which appears as the first expression in a class,
       function or module.  While ignored when the suite is executed, it is
-      recognized by the compiler and put into the :attr:`!__doc__` attribute
+      recognized by the compiler and put into the :attr:`~definition.__doc__` attribute
       of the enclosing class, function or module.  Since it is available via
       introspection, it is the canonical place for documentation of the
       object.
@@ -425,11 +469,11 @@ Glossary
       An object that tries to find the :term:`loader` for a module that is
       being imported.
 
-      Since Python 3.3, there are two types of finder: :term:`meta path finders
+      There are two types of finder: :term:`meta path finders
       <meta path finder>` for use with :data:`sys.meta_path`, and :term:`path
       entry finders <path entry finder>` for use with :data:`sys.path_hooks`.
 
-      See :pep:`302`, :pep:`420` and :pep:`451` for much more detail.
+      See :ref:`finders-and-loaders` and :mod:`importlib` for much more detail.
 
    floor division
       Mathematical division that rounds down to nearest integer.  The floor
@@ -438,6 +482,19 @@ Glossary
       division.  Note that ``(-11) // 4`` is ``-3`` because that is ``-2.75``
       rounded *downward*. See :pep:`238`.
 
+   free threading
+      A threading model where multiple threads can run Python bytecode
+      simultaneously within the same interpreter.  This is in contrast to
+      the :term:`global interpreter lock` which allows only one thread to
+      execute Python bytecode at a time.  See :pep:`703`.
+
+   free variable
+      Formally, as defined in the :ref:`language execution model <bind_names>`, a free
+      variable is any variable used in a namespace which is not a local variable in that
+      namespace. See :term:`closure variable` for an example.
+      Pragmatically, due to the name of the :attr:`codeobject.co_freevars` attribute,
+      the term is also sometimes used as a synonym for :term:`closure variable`.
+
    function
       A series of statements which returns some value to a caller. It can also
       be passed zero or more :term:`arguments <argument>` which may be used in
@@ -497,7 +554,7 @@ Glossary
       An object created by a :term:`generator` function.
 
       Each :keyword:`yield` temporarily suspends processing, remembering the
-      location execution state (including local variables and pending
+      execution state (including local variables and pending
       try-statements).  When the *generator iterator* resumes, it picks up where
       it left off (in contrast to functions which start fresh on every
       invocation).
@@ -550,7 +607,7 @@ Glossary
 
       As of Python 3.13, the GIL can be disabled using the :option:`--disable-gil`
       build configuration. After building Python with this option, code must be
-      run with :option:`-X gil 0 <-X>` or after setting the :envvar:`PYTHON_GIL=0 <PYTHON_GIL>`
+      run with :option:`-X gil=0 <-X>` or after setting the :envvar:`PYTHON_GIL=0 <PYTHON_GIL>`
       environment variable. This feature enables improved performance for
       multi-threaded applications and makes it easier to use multi-core CPUs
       efficiently. For more details, see :pep:`703`.
@@ -584,14 +641,12 @@ Glossary
       which ships with the standard distribution of Python.
 
    immortal
-      If an object is immortal, its reference count is never modified, and
-      therefore it is never deallocated.
+      *Immortal objects* are a CPython implementation detail introduced
+      in :pep:`683`.
 
-      Built-in strings and singletons are immortal objects. For example,
-      :const:`True` and :const:`None` singletons are immmortal.
-
-      See `PEP 683 – Immortal Objects, Using a Fixed Refcount
-      <https://peps.python.org/pep-0683/>`_ for more information.
+      If an object is immortal, its :term:`reference count` is never modified,
+      and therefore it is never deallocated while the interpreter is running.
+      For example, :const:`True` and :const:`None` are immortal in CPython.
 
    immutable
       An object with a fixed value.  Immutable objects include numbers, strings and
@@ -688,6 +743,9 @@ Glossary
 
          CPython does not consistently apply the requirement that an iterator
          define :meth:`~iterator.__iter__`.
+         And also please note that the free-threading CPython does not guarantee
+         the thread-safety of iterator operations.
+
 
    key function
       A key function or collation function is a callable that returns a value
@@ -743,10 +801,15 @@ Glossary
       processed.
 
    loader
-      An object that loads a module. It must define a method named
-      :meth:`load_module`. A loader is typically returned by a
-      :term:`finder`. See :pep:`302` for details and
-      :class:`importlib.abc.Loader` for an :term:`abstract base class`.
+      An object that loads a module.
+      It must define the :meth:`!exec_module` and :meth:`!create_module` methods
+      to implement the :class:`~importlib.abc.Loader` interface.
+      A loader is typically returned by a :term:`finder`.
+      See also:
+
+      * :ref:`finders-and-loaders`
+      * :class:`importlib.abc.Loader`
+      * :pep:`302`
 
    locale encoding
       On Unix, it is the encoding of the LC_CTYPE locale. It can be set with
@@ -816,6 +879,8 @@ Glossary
       A namespace containing the import-related information used to load a
       module. An instance of :class:`importlib.machinery.ModuleSpec`.
 
+      See also :ref:`module-specs`.
+
    MRO
       See :term:`method resolution order`.
 
@@ -889,6 +954,15 @@ Glossary
       (methods).  Also the ultimate base class of any :term:`new-style
       class`.
 
+   optimized scope
+      A scope where target local variable names are reliably known to the
+      compiler when the code is compiled, allowing optimization of read and
+      write access to these names. The local namespaces for functions,
+      generators, coroutines, comprehensions, and generator expressions are
+      optimized in this fashion. Note: most interpreter optimizations are
+      applied to all scopes, only those relying on a known set of local
+      and nonlocal variable names are restricted to optimized scopes.
+
    package
       A Python :term:`module` which can contain submodules or recursively,
       subpackages.  Technically, a package is a Python module with a
@@ -1105,7 +1179,7 @@ Glossary
       :class:`tuple`, and :class:`bytes`. Note that :class:`dict` also
       supports :meth:`~object.__getitem__` and :meth:`!__len__`, but is considered a
       mapping rather than a sequence because the lookups use arbitrary
-      :term:`immutable` keys rather than integers.
+      :term:`hashable` keys rather than integers.
 
       The :class:`collections.abc.Sequence` abstract base class
       defines a much richer interface that goes beyond just
@@ -1134,16 +1208,12 @@ Glossary
       (subscript) notation uses :class:`slice` objects internally.
 
    soft deprecated
-      A soft deprecation can be used when using an API which should no longer
-      be used to write new code, but it remains safe to continue using it in
-      existing code. The API remains documented and tested, but will not be
-      developed further (no enhancement).
-
-      The main difference between a "soft" and a (regular) "hard" deprecation
-      is that the soft deprecation does not imply scheduling the removal of the
-      deprecated API.
+      A soft deprecated API should not be used in new code,
+      but it is safe for already existing code to use it.
+      The API remains documented and tested, but will not be enhanced further.
 
-      Another difference is that a soft deprecation does not issue a warning.
+      Soft deprecation, unlike normal deprecation, does not plan on removing the API
+      and will not emit warnings.
 
       See `PEP 387: Soft Deprecation
       <https://peps.python.org/pep-0387/#soft-deprecation>`_.
@@ -1215,7 +1285,7 @@ Glossary
    type
       The type of a Python object determines what kind of object it is; every
       object has a type.  An object's type is accessible as its
-      :attr:`~instance.__class__` attribute or can be retrieved with
+      :attr:`~object.__class__` attribute or can be retrieved with
       ``type(obj)``.
 
    type alias
diff --git a/Doc/howto/annotations.rst b/Doc/howto/annotations.rst
index be8c7e6c827f57..174078b84aa5a8 100644
--- a/Doc/howto/annotations.rst
+++ b/Doc/howto/annotations.rst
@@ -102,9 +102,9 @@ Your code will have to have a separate code path if the object
 you're examining is a class (``isinstance(o, type)``).
 In that case, best practice relies on an implementation detail
 of Python 3.9 and before: if a class has annotations defined,
-they are stored in the class's ``__dict__`` dictionary.  Since
+they are stored in the class's :attr:`~type.__dict__` dictionary.  Since
 the class may or may not have annotations defined, best practice
-is to call the ``get`` method on the class dict.
+is to call the :meth:`~dict.get` method on the class dict.
 
 To put it all together, here is some sample code that safely
 accesses the ``__annotations__`` attribute on an arbitrary
@@ -121,8 +121,8 @@ the type of ``ann`` using :func:`isinstance` before further
 examination.
 
 Note that some exotic or malformed type objects may not have
-a ``__dict__`` attribute, so for extra safety you may also wish
-to use :func:`getattr` to access ``__dict__``.
+a :attr:`~type.__dict__` attribute, so for extra safety you may also wish
+to use :func:`getattr` to access :attr:`!__dict__`.
 
 
 Manually Un-Stringizing Stringized Annotations
diff --git a/Doc/howto/argparse-optparse.rst b/Doc/howto/argparse-optparse.rst
new file mode 100644
index 00000000000000..b684619885b4c7
--- /dev/null
+++ b/Doc/howto/argparse-optparse.rst
@@ -0,0 +1,65 @@
+.. currentmodule:: argparse
+
+.. _upgrading-optparse-code:
+.. _migrating-optparse-code:
+
+============================================
+Migrating ``optparse`` code to ``argparse``
+============================================
+
+The :mod:`argparse` module offers several higher level features not natively
+provided by the :mod:`optparse` module, including:
+
+* Handling positional arguments.
+* Supporting subcommands.
+* Allowing alternative option prefixes like ``+`` and ``/``.
+* Handling zero-or-more and one-or-more style arguments.
+* Producing more informative usage messages.
+* Providing a much simpler interface for custom ``type`` and ``action``.
+
+Originally, the :mod:`argparse` module attempted to maintain compatibility
+with :mod:`optparse`.  However, the fundamental design differences between
+supporting declarative command line option processing (while leaving positional
+argument processing to application code), and supporting both named options
+and positional arguments in the declarative interface mean that the
+API has diverged from that of ``optparse`` over time.
+
+As described in :ref:`choosing-an-argument-parser`, applications that are
+currently using :mod:`optparse` and are happy with the way it works can
+just continue to use ``optparse``.
+
+Application developers that are considering migrating should also review
+the list of intrinsic behavioural differences described in that section
+before deciding whether or not migration is desirable.
+
+For applications that do choose to migrate from :mod:`optparse` to :mod:`argparse`,
+the following suggestions should be helpful:
+
+* Replace all :meth:`optparse.OptionParser.add_option` calls with
+  :meth:`ArgumentParser.add_argument` calls.
+
+* Replace ``(options, args) = parser.parse_args()`` with ``args =
+  parser.parse_args()`` and add additional :meth:`ArgumentParser.add_argument`
+  calls for the positional arguments. Keep in mind that what was previously
+  called ``options``, now in the :mod:`argparse` context is called ``args``.
+
+* Replace :meth:`optparse.OptionParser.disable_interspersed_args`
+  by using :meth:`~ArgumentParser.parse_intermixed_args` instead of
+  :meth:`~ArgumentParser.parse_args`.
+
+* Replace callback actions and the ``callback_*`` keyword arguments with
+  ``type`` or ``action`` arguments.
+
+* Replace string names for ``type`` keyword arguments with the corresponding
+  type objects (e.g. int, float, complex, etc).
+
+* Replace :class:`optparse.Values` with :class:`Namespace` and
+  :exc:`optparse.OptionError` and :exc:`optparse.OptionValueError` with
+  :exc:`ArgumentError`.
+
+* Replace strings with implicit arguments such as ``%default`` or ``%prog`` with
+  the standard Python syntax to use dictionaries to format strings, that is,
+  ``%(default)s`` and ``%(prog)s``.
+
+* Replace the OptionParser constructor ``version`` argument with a call to
+  ``parser.add_argument('--version', action='version', version='<the version>')``.
diff --git a/Doc/howto/argparse.rst b/Doc/howto/argparse.rst
index ae5bab90bf8131..902c50de00803c 100644
--- a/Doc/howto/argparse.rst
+++ b/Doc/howto/argparse.rst
@@ -13,11 +13,16 @@ recommended command-line parsing module in the Python standard library.
 
 .. note::
 
-   There are two other modules that fulfill the same task, namely
-   :mod:`getopt` (an equivalent for ``getopt()`` from the C
-   language) and the deprecated :mod:`optparse`.
-   Note also that :mod:`argparse` is based on :mod:`optparse`,
-   and therefore very similar in terms of usage.
+   The standard library includes two other libraries directly related
+   to command-line parameter processing: the lower level :mod:`optparse`
+   module (which may require more code to configure for a given application,
+   but also allows an application to request behaviors that ``argparse``
+   doesn't support), and the very low level :mod:`getopt` (which specifically
+   serves as an equivalent to the :c:func:`!getopt` family of functions
+   available to C programmers).
+   While neither of those modules is covered directly in this guide, many of
+   the core concepts in ``argparse`` first originated in ``optparse``, so
+   some aspects of this tutorial will also be relevant to ``optparse`` users.
 
 
 Concepts
@@ -444,7 +449,7 @@ And the output:
 
    options:
      -h, --help            show this help message and exit
-     -v {0,1,2}, --verbosity {0,1,2}
+     -v, --verbosity {0,1,2}
                            increase output verbosity
 
 Note that the change also reflects both in the error message as well as the
@@ -841,6 +846,53 @@ translated messages.
 
 To translate your own strings in the :mod:`argparse` output, use :mod:`gettext`.
 
+Custom type converters
+======================
+
+The :mod:`argparse` module allows you to specify custom type converters for
+your command-line arguments. This allows you to modify user input before it's
+stored in the :class:`argparse.Namespace`. This can be useful when you need to
+pre-process the input before it is used in your program.
+
+When using a custom type converter, you can use any callable that takes a
+single string argument (the argument value) and returns the converted value.
+However, if you need to handle more complex scenarios, you can use a custom
+action class with the **action** parameter instead.
+
+For example, let's say you want to handle arguments with different prefixes and
+process them accordingly::
+
+   import argparse
+
+   parser = argparse.ArgumentParser(prefix_chars='-+')
+
+   parser.add_argument('-a', metavar='<value>', action='append',
+                       type=lambda x: ('-', x))
+   parser.add_argument('+a', metavar='<value>', action='append',
+                       type=lambda x: ('+', x))
+
+   args = parser.parse_args()
+   print(args)
+
+Output:
+
+.. code-block:: shell-session
+
+   $ python prog.py -a value1 +a value2
+   Namespace(a=[('-', 'value1'), ('+', 'value2')])
+
+In this example, we:
+
+* Created a parser with custom prefix characters using the ``prefix_chars``
+  parameter.
+
+* Defined two arguments, ``-a`` and ``+a``, which used the ``type`` parameter to
+  create custom type converters to store the value in a tuple with the prefix.
+
+Without the custom type converters, the arguments would have treated the ``-a``
+and ``+a`` as the same argument, which would have been undesirable. By using custom
+type converters, we were able to differentiate between the two arguments.
+
 Conclusion
 ==========
 
diff --git a/Doc/howto/descriptor.rst b/Doc/howto/descriptor.rst
index 51f9f4a6556e57..50a368b7712938 100644
--- a/Doc/howto/descriptor.rst
+++ b/Doc/howto/descriptor.rst
@@ -42,7 +42,7 @@ add new capabilities one by one.
 Simple example: A descriptor that returns a constant
 ----------------------------------------------------
 
-The :class:`Ten` class is a descriptor whose :meth:`__get__` method always
+The :class:`!Ten` class is a descriptor whose :meth:`~object.__get__` method always
 returns the constant ``10``:
 
 .. testcode::
@@ -120,10 +120,10 @@ different, updated answers each time::
     2
 
 Besides showing how descriptors can run computations, this example also
-reveals the purpose of the parameters to :meth:`__get__`.  The *self*
+reveals the purpose of the parameters to :meth:`~object.__get__`.  The *self*
 parameter is *size*, an instance of *DirectorySize*.  The *obj* parameter is
 either *g* or *s*, an instance of *Directory*.  It is the *obj* parameter that
-lets the :meth:`__get__` method learn the target directory.  The *objtype*
+lets the :meth:`~object.__get__` method learn the target directory.  The *objtype*
 parameter is the class *Directory*.
 
 
@@ -133,7 +133,7 @@ Managed attributes
 A popular use for descriptors is managing access to instance data.  The
 descriptor is assigned to a public attribute in the class dictionary while the
 actual data is stored as a private attribute in the instance dictionary.  The
-descriptor's :meth:`__get__` and :meth:`__set__` methods are triggered when
+descriptor's :meth:`~object.__get__` and :meth:`~object.__set__` methods are triggered when
 the public attribute is accessed.
 
 In the following example, *age* is the public attribute and *_age* is the
@@ -215,9 +215,9 @@ Customized names
 When a class uses descriptors, it can inform each descriptor about which
 variable name was used.
 
-In this example, the :class:`Person` class has two descriptor instances,
-*name* and *age*.  When the :class:`Person` class is defined, it makes a
-callback to :meth:`__set_name__` in *LoggedAccess* so that the field names can
+In this example, the :class:`!Person` class has two descriptor instances,
+*name* and *age*.  When the :class:`!Person` class is defined, it makes a
+callback to :meth:`~object.__set_name__` in *LoggedAccess* so that the field names can
 be recorded, giving each descriptor its own *public_name* and *private_name*:
 
 .. testcode::
@@ -253,8 +253,8 @@ be recorded, giving each descriptor its own *public_name* and *private_name*:
         def birthday(self):
             self.age += 1
 
-An interactive session shows that the :class:`Person` class has called
-:meth:`__set_name__` so that the field names would be recorded.  Here
+An interactive session shows that the :class:`!Person` class has called
+:meth:`~object.__set_name__` so that the field names would be recorded.  Here
 we call :func:`vars` to look up the descriptor without triggering it:
 
 .. doctest::
@@ -294,10 +294,10 @@ The two *Person* instances contain only the private names:
 Closing thoughts
 ----------------
 
-A :term:`descriptor` is what we call any object that defines :meth:`__get__`,
-:meth:`__set__`, or :meth:`__delete__`.
+A :term:`descriptor` is what we call any object that defines :meth:`~object.__get__`,
+:meth:`~object.__set__`, or :meth:`~object.__delete__`.
 
-Optionally, descriptors can have a :meth:`__set_name__` method.  This is only
+Optionally, descriptors can have a :meth:`~object.__set_name__` method.  This is only
 used in cases where a descriptor needs to know either the class where it was
 created or the name of class variable it was assigned to.  (This method, if
 present, is called even if the class is not a descriptor.)
@@ -337,7 +337,7 @@ any data, it verifies that the new value meets various type and range
 restrictions.  If those restrictions aren't met, it raises an exception to
 prevent data corruption at its source.
 
-This :class:`Validator` class is both an :term:`abstract base class` and a
+This :class:`!Validator` class is both an :term:`abstract base class` and a
 managed attribute descriptor:
 
 .. testcode::
@@ -360,8 +360,8 @@ managed attribute descriptor:
         def validate(self, value):
             pass
 
-Custom validators need to inherit from :class:`Validator` and must supply a
-:meth:`validate` method to test various restrictions as needed.
+Custom validators need to inherit from :class:`!Validator` and must supply a
+:meth:`!validate` method to test various restrictions as needed.
 
 
 Custom validators
@@ -369,13 +369,13 @@ Custom validators
 
 Here are three practical data validation utilities:
 
-1) :class:`OneOf` verifies that a value is one of a restricted set of options.
+1) :class:`!OneOf` verifies that a value is one of a restricted set of options.
 
-2) :class:`Number` verifies that a value is either an :class:`int` or
+2) :class:`!Number` verifies that a value is either an :class:`int` or
    :class:`float`.  Optionally, it verifies that a value is between a given
    minimum or maximum.
 
-3) :class:`String` verifies that a value is a :class:`str`.  Optionally, it
+3) :class:`!String` verifies that a value is a :class:`str`.  Optionally, it
    validates a given minimum or maximum length.  It can validate a
    user-defined `predicate
    <https://en.wikipedia.org/wiki/Predicate_(mathematical_logic)>`_ as well.
@@ -389,7 +389,9 @@ Here are three practical data validation utilities:
 
         def validate(self, value):
             if value not in self.options:
-                raise ValueError(f'Expected {value!r} to be one of {self.options!r}')
+                raise ValueError(
+                    f'Expected {value!r} to be one of {self.options!r}'
+                )
 
     class Number(Validator):
 
@@ -469,6 +471,7 @@ The descriptors prevent invalid instances from being created:
     Traceback (most recent call last):
         ...
     ValueError: Expected -5 to be at least 0
+
     >>> Component('WIDGET', 'metal', 'V')    # Blocked: 'V' isn't a number
     Traceback (most recent call last):
         ...
@@ -498,8 +501,8 @@ Definition and introduction
 ---------------------------
 
 In general, a descriptor is an attribute value that has one of the methods in
-the descriptor protocol.  Those methods are :meth:`__get__`, :meth:`__set__`,
-and :meth:`__delete__`.  If any of those methods are defined for an
+the descriptor protocol.  Those methods are :meth:`~object.__get__`, :meth:`~object.__set__`,
+and :meth:`~object.__delete__`.  If any of those methods are defined for an
 attribute, it is said to be a :term:`descriptor`.
 
 The default behavior for attribute access is to get, set, or delete the
@@ -513,7 +516,7 @@ were defined.
 
 Descriptors are a powerful, general purpose protocol.  They are the mechanism
 behind properties, methods, static methods, class methods, and
-:func:`super()`.  They are used throughout Python itself.  Descriptors
+:func:`super`.  They are used throughout Python itself.  Descriptors
 simplify the underlying C code and offer a flexible set of new tools for
 everyday Python programs.
 
@@ -531,8 +534,8 @@ That is all there is to it.  Define any of these methods and an object is
 considered a descriptor and can override default behavior upon being looked up
 as an attribute.
 
-If an object defines :meth:`__set__` or :meth:`__delete__`, it is considered
-a data descriptor.  Descriptors that only define :meth:`__get__` are called
+If an object defines :meth:`~object.__set__` or :meth:`~object.__delete__`, it is considered
+a data descriptor.  Descriptors that only define :meth:`~object.__get__` are called
 non-data descriptors (they are often used for methods but other uses are
 possible).
 
@@ -542,9 +545,9 @@ has an entry with the same name as a data descriptor, the data descriptor
 takes precedence.  If an instance's dictionary has an entry with the same
 name as a non-data descriptor, the dictionary entry takes precedence.
 
-To make a read-only data descriptor, define both :meth:`__get__` and
-:meth:`__set__` with the :meth:`__set__` raising an :exc:`AttributeError` when
-called.  Defining the :meth:`__set__` method with an exception raising
+To make a read-only data descriptor, define both :meth:`~object.__get__` and
+:meth:`~object.__set__` with the :meth:`~object.__set__` raising an :exc:`AttributeError` when
+called.  Defining the :meth:`~object.__set__` method with an exception raising
 placeholder is enough to make it a data descriptor.
 
 
@@ -559,8 +562,8 @@ attribute access.
 
 The expression ``obj.x`` looks up the attribute ``x`` in the chain of
 namespaces for ``obj``.  If the search finds a descriptor outside of the
-instance ``__dict__``, its :meth:`__get__` method is invoked according to the
-precedence rules listed below.
+instance :attr:`~object.__dict__`, its :meth:`~object.__get__` method is
+invoked according to the precedence rules listed below.
 
 The details of invocation depend on whether ``obj`` is an object, class, or
 instance of super.
@@ -571,7 +574,7 @@ Invocation from an instance
 
 Instance lookup scans through a chain of namespaces giving data descriptors
 the highest priority, followed by instance variables, then non-data
-descriptors, then class variables, and lastly :meth:`__getattr__` if it is
+descriptors, then class variables, and lastly :meth:`~object.__getattr__` if it is
 provided.
 
 If a descriptor is found for ``a.x``, then it is invoked with:
@@ -716,12 +719,12 @@ a pure Python equivalent:
     >>> object_getattribute(u2, 'x') == u2.x == (D1, u2, U2)
     True
 
-Note, there is no :meth:`__getattr__` hook in the :meth:`__getattribute__`
-code.  That is why calling :meth:`__getattribute__` directly or with
-``super().__getattribute__`` will bypass :meth:`__getattr__` entirely.
+Note, there is no :meth:`~object.__getattr__` hook in the :meth:`~object.__getattribute__`
+code.  That is why calling :meth:`~object.__getattribute__` directly or with
+``super().__getattribute__`` will bypass :meth:`~object.__getattr__` entirely.
 
 Instead, it is the dot operator and the :func:`getattr` function that are
-responsible for invoking :meth:`__getattr__` whenever :meth:`__getattribute__`
+responsible for invoking :meth:`~object.__getattr__` whenever :meth:`~object.__getattribute__`
 raises an :exc:`AttributeError`.  Their logic is encapsulated in a helper
 function:
 
@@ -773,8 +776,8 @@ Invocation from a class
 -----------------------
 
 The logic for a dotted lookup such as ``A.x`` is in
-:meth:`type.__getattribute__`.  The steps are similar to those for
-:meth:`object.__getattribute__` but the instance dictionary lookup is replaced
+:meth:`!type.__getattribute__`.  The steps are similar to those for
+:meth:`!object.__getattribute__` but the instance dictionary lookup is replaced
 by a search through the class's :term:`method resolution order`.
 
 If a descriptor is found, it is invoked with ``desc.__get__(None, A)``.
@@ -786,8 +789,8 @@ The full C implementation can be found in :c:func:`!type_getattro` and
 Invocation from super
 ---------------------
 
-The logic for super's dotted lookup is in the :meth:`__getattribute__` method for
-object returned by :class:`super()`.
+The logic for super's dotted lookup is in the :meth:`~object.__getattribute__` method for
+object returned by :func:`super`.
 
 A dotted lookup such as ``super(A, obj).m`` searches ``obj.__class__.__mro__``
 for the base class ``B`` immediately following ``A`` and then returns
@@ -803,21 +806,21 @@ The full C implementation can be found in :c:func:`!super_getattro` in
 Summary of invocation logic
 ---------------------------
 
-The mechanism for descriptors is embedded in the :meth:`__getattribute__()`
+The mechanism for descriptors is embedded in the :meth:`~object.__getattribute__`
 methods for :class:`object`, :class:`type`, and :func:`super`.
 
 The important points to remember are:
 
-* Descriptors are invoked by the :meth:`__getattribute__` method.
+* Descriptors are invoked by the :meth:`~object.__getattribute__` method.
 
 * Classes inherit this machinery from :class:`object`, :class:`type`, or
   :func:`super`.
 
-* Overriding :meth:`__getattribute__` prevents automatic descriptor calls
+* Overriding :meth:`~object.__getattribute__` prevents automatic descriptor calls
   because all the descriptor logic is in that method.
 
-* :meth:`object.__getattribute__` and :meth:`type.__getattribute__` make
-  different calls to :meth:`__get__`.  The first includes the instance and may
+* :meth:`!object.__getattribute__` and :meth:`!type.__getattribute__` make
+  different calls to :meth:`~object.__get__`.  The first includes the instance and may
   include the class.  The second puts in ``None`` for the instance and always
   includes the class.
 
@@ -832,16 +835,16 @@ Automatic name notification
 Sometimes it is desirable for a descriptor to know what class variable name it
 was assigned to.  When a new class is created, the :class:`type` metaclass
 scans the dictionary of the new class.  If any of the entries are descriptors
-and if they define :meth:`__set_name__`, that method is called with two
+and if they define :meth:`~object.__set_name__`, that method is called with two
 arguments.  The *owner* is the class where the descriptor is used, and the
 *name* is the class variable the descriptor was assigned to.
 
 The implementation details are in :c:func:`!type_new` and
 :c:func:`!set_names` in :source:`Objects/typeobject.c`.
 
-Since the update logic is in :meth:`type.__new__`, notifications only take
+Since the update logic is in :meth:`!type.__new__`, notifications only take
 place at the time of class creation.  If descriptors are added to the class
-afterwards, :meth:`__set_name__` will need to be called manually.
+afterwards, :meth:`~object.__set_name__` will need to be called manually.
 
 
 ORM example
@@ -870,7 +873,7 @@ care of lookups or updates:
             conn.execute(self.store, [value, obj.key])
             conn.commit()
 
-We can use the :class:`Field` class to define `models
+We can use the :class:`!Field` class to define `models
 <https://en.wikipedia.org/wiki/Database_model>`_ that describe the schema for
 each table in a database:
 
@@ -990,7 +993,7 @@ The documentation shows a typical use to define a managed attribute ``x``:
     AttributeError: 'C' object has no attribute '_C__x'
 
 To see how :func:`property` is implemented in terms of the descriptor protocol,
-here is a pure Python equivalent:
+here is a pure Python equivalent that implements most of the core functionality:
 
 .. testcode::
 
@@ -1004,59 +1007,35 @@ here is a pure Python equivalent:
             if doc is None and fget is not None:
                 doc = fget.__doc__
             self.__doc__ = doc
-            self._name = None
 
         def __set_name__(self, owner, name):
-            self._name = name
-
-        @property
-        def __name__(self):
-            return self._name if self._name is not None else self.fget.__name__
-
-        @__name__.setter
-        def __name__(self, value):
-            self._name = value
+            self.__name__ = name
 
         def __get__(self, obj, objtype=None):
             if obj is None:
                 return self
             if self.fget is None:
-                raise AttributeError(
-                    f'property {self.__name__!r} of {type(obj).__name__!r} '
-                    'object has no getter'
-                 )
+                raise AttributeError
             return self.fget(obj)
 
         def __set__(self, obj, value):
             if self.fset is None:
-                raise AttributeError(
-                    f'property {self.__name__!r} of {type(obj).__name__!r} '
-                    'object has no setter'
-                 )
+                raise AttributeError
             self.fset(obj, value)
 
         def __delete__(self, obj):
             if self.fdel is None:
-                raise AttributeError(
-                    f'property {self.__name__!r} of {type(obj).__name__!r} '
-                    'object has no deleter'
-                 )
+                raise AttributeError
             self.fdel(obj)
 
         def getter(self, fget):
-            prop = type(self)(fget, self.fset, self.fdel, self.__doc__)
-            prop._name = self._name
-            return prop
+            return type(self)(fget, self.fset, self.fdel, self.__doc__)
 
         def setter(self, fset):
-            prop = type(self)(self.fget, fset, self.fdel, self.__doc__)
-            prop._name = self._name
-            return prop
+            return type(self)(self.fget, fset, self.fdel, self.__doc__)
 
         def deleter(self, fdel):
-            prop = type(self)(self.fget, self.fset, fdel, self.__doc__)
-            prop._name = self._name
-            return prop
+            return type(self)(self.fget, self.fset, fdel, self.__doc__)
 
 .. testcode::
     :hide:
@@ -1119,23 +1098,23 @@ here is a pure Python equivalent:
     >>> try:
     ...     cc.no_getter
     ... except AttributeError as e:
-    ...     e.args[0]
+    ...     type(e).__name__
     ...
-    "property 'no_getter' of 'CC' object has no getter"
+    'AttributeError'
 
     >>> try:
     ...     cc.no_setter = 33
     ... except AttributeError as e:
-    ...     e.args[0]
+    ...     type(e).__name__
     ...
-    "property 'no_setter' of 'CC' object has no setter"
+    'AttributeError'
 
     >>> try:
     ...     del cc.no_deleter
     ... except AttributeError as e:
-    ...     e.args[0]
+    ...     type(e).__name__
     ...
-    "property 'no_deleter' of 'CC' object has no deleter"
+    'AttributeError'
 
     >>> CC.no_doc.__doc__ is None
     True
@@ -1161,7 +1140,7 @@ to wrap access to the value attribute in a property data descriptor:
             self.recalc()
             return self._value
 
-Either the built-in :func:`property` or our :func:`Property` equivalent would
+Either the built-in :func:`property` or our :func:`!Property` equivalent would
 work in this example.
 
 
@@ -1208,7 +1187,7 @@ roughly equivalent to:
             return self
 
 To support automatic creation of methods, functions include the
-:meth:`__get__` method for binding methods during attribute access.  This
+:meth:`~object.__get__` method for binding methods during attribute access.  This
 means that functions are non-data descriptors that return bound methods
 during dotted lookup from an instance.  Here's how it works:
 
@@ -1252,19 +1231,19 @@ The function has a :term:`qualified name` attribute to support introspection:
     'D.f'
 
 Accessing the function through the class dictionary does not invoke
-:meth:`__get__`.  Instead, it just returns the underlying function object::
+:meth:`~object.__get__`.  Instead, it just returns the underlying function object::
 
     >>> D.__dict__['f']
     <function D.f at 0x00C45070>
 
-Dotted access from a class calls :meth:`__get__` which just returns the
+Dotted access from a class calls :meth:`~object.__get__` which just returns the
 underlying function unchanged::
 
     >>> D.f
     <function D.f at 0x00C45070>
 
 The interesting behavior occurs during dotted access from an instance.  The
-dotted lookup calls :meth:`__get__` which returns a bound method object::
+dotted lookup calls :meth:`~object.__get__` which returns a bound method object::
 
     >>> d = D()
     >>> d.f
@@ -1289,7 +1268,7 @@ Kinds of methods
 Non-data descriptors provide a simple mechanism for variations on the usual
 patterns of binding functions into methods.
 
-To recap, functions have a :meth:`__get__` method so that they can be converted
+To recap, functions have a :meth:`~object.__get__` method so that they can be converted
 to a method when accessed as attributes.  The non-data descriptor transforms an
 ``obj.f(*args)`` call into ``f(obj, *args)``.  Calling ``cls.f(*args)``
 becomes ``f(*args)``.
@@ -1326,8 +1305,8 @@ mean, median, and other descriptive statistics that depend on the data. However,
 there may be useful functions which are conceptually related but do not depend
 on the data.  For instance, ``erf(x)`` is handy conversion routine that comes up
 in statistical work but does not directly depend on a particular dataset.
-It can be called either from an object or the class:  ``s.erf(1.5) --> .9332`` or
-``Sample.erf(1.5) --> .9332``.
+It can be called either from an object or the class:  ``s.erf(1.5) --> 0.9332``
+or ``Sample.erf(1.5) --> 0.9332``.
 
 Since static methods return the underlying function with no changes, the
 example calls are unexciting:
@@ -1688,7 +1667,7 @@ by member descriptors:
             'Emulate member_repr() in Objects/descrobject.c'
             return f'<Member {self.name!r} of {self.clsname!r}>'
 
-The :meth:`type.__new__` method takes care of adding member objects to class
+The :meth:`!type.__new__` method takes care of adding member objects to class
 variables:
 
 .. testcode::
@@ -1739,7 +1718,7 @@ Python:
                 )
             super().__delattr__(name)
 
-To use the simulation in a real class, just inherit from :class:`Object` and
+To use the simulation in a real class, just inherit from :class:`!Object` and
 set the :term:`metaclass` to :class:`Type`:
 
 .. testcode::
diff --git a/Doc/howto/enum.rst b/Doc/howto/enum.rst
index 30be15230fc088..6441b7aed1eda8 100644
--- a/Doc/howto/enum.rst
+++ b/Doc/howto/enum.rst
@@ -1,3 +1,5 @@
+.. _enum-howto:
+
 ==========
 Enum HOWTO
 ==========
@@ -7,7 +9,7 @@ Enum HOWTO
 .. currentmodule:: enum
 
 An :class:`Enum` is a set of symbolic names bound to unique values.  They are
-similar to global variables, but they offer a more useful :func:`repr()`,
+similar to global variables, but they offer a more useful :func:`repr`,
 grouping, type-safety, and a few other features.
 
 They are most useful when you have a variable that can take one of a limited
@@ -62,12 +64,12 @@ The *type* of an enumeration member is the enum it belongs to::
     >>> isinstance(Weekday.FRIDAY, Weekday)
     True
 
-Enum members have an attribute that contains just their :attr:`name`::
+Enum members have an attribute that contains just their :attr:`!name`::
 
     >>> print(Weekday.TUESDAY.name)
     TUESDAY
 
-Likewise, they have an attribute for their :attr:`value`::
+Likewise, they have an attribute for their :attr:`!value`::
 
 
     >>> Weekday.WEDNESDAY.value
@@ -75,17 +77,18 @@ Likewise, they have an attribute for their :attr:`value`::
 
 Unlike many languages that treat enumerations solely as name/value pairs,
 Python Enums can have behavior added.  For example, :class:`datetime.date`
-has two methods for returning the weekday: :meth:`weekday` and :meth:`isoweekday`.
+has two methods for returning the weekday:
+:meth:`~datetime.date.weekday` and :meth:`~datetime.date.isoweekday`.
 The difference is that one of them counts from 0-6 and the other from 1-7.
-Rather than keep track of that ourselves we can add a method to the :class:`Weekday`
-enum to extract the day from the :class:`date` instance and return the matching
+Rather than keep track of that ourselves we can add a method to the :class:`!Weekday`
+enum to extract the day from the :class:`~datetime.date` instance and return the matching
 enum member::
 
         @classmethod
         def from_date(cls, date):
             return cls(date.isoweekday())
 
-The complete :class:`Weekday` enum now looks like this::
+The complete :class:`!Weekday` enum now looks like this::
 
     >>> class Weekday(Enum):
     ...     MONDAY = 1
@@ -108,7 +111,7 @@ Now we can find out what today is!  Observe::
 
 Of course, if you're reading this on some other day, you'll see that day instead.
 
-This :class:`Weekday` enum is great if our variable only needs one day, but
+This :class:`!Weekday` enum is great if our variable only needs one day, but
 what if we need several?  Maybe we're writing a function to plot chores during
 a week, and don't want to use a :class:`list` -- we could use a different type
 of :class:`Enum`::
@@ -126,7 +129,7 @@ of :class:`Enum`::
 We've changed two things: we're inherited from :class:`Flag`, and the values are
 all powers of 2.
 
-Just like the original :class:`Weekday` enum above, we can have a single selection::
+Just like the original :class:`!Weekday` enum above, we can have a single selection::
 
     >>> first_week_day = Weekday.MONDAY
     >>> first_week_day
@@ -165,7 +168,7 @@ And a function to display the chores for a given day::
     answer SO questions
 
 In cases where the actual values of the members do not matter, you can save
-yourself some work and use :func:`auto()` for the values::
+yourself some work and use :func:`auto` for the values::
 
     >>> from enum import auto
     >>> class Weekday(Flag):
@@ -201,7 +204,7 @@ If you want to access enum members by *name*, use item access::
     >>> Color['GREEN']
     <Color.GREEN: 2>
 
-If you have an enum member and need its :attr:`name` or :attr:`value`::
+If you have an enum member and need its :attr:`!name` or :attr:`!value`::
 
     >>> member = Color.RED
     >>> member.name
@@ -282,7 +285,7 @@ If the exact value is unimportant you can use :class:`auto`::
     >>> [member.value for member in Color]
     [1, 2, 3]
 
-The values are chosen by :func:`_generate_next_value_`, which can be
+The values are chosen by :func:`~Enum._generate_next_value_`, which can be
 overridden::
 
     >>> class AutoName(Enum):
@@ -301,7 +304,7 @@ overridden::
 
 .. note::
 
-    The :meth:`_generate_next_value_` method must be defined before any members.
+    The :meth:`~Enum._generate_next_value_` method must be defined before any members.
 
 Iteration
 ---------
@@ -422,18 +425,18 @@ Then::
 The rules for what is allowed are as follows: names that start and end with
 a single underscore are reserved by enum and cannot be used; all other
 attributes defined within an enumeration will become members of this
-enumeration, with the exception of special methods (:meth:`__str__`,
-:meth:`__add__`, etc.), descriptors (methods are also descriptors), and
-variable names listed in :attr:`_ignore_`.
+enumeration, with the exception of special methods (:meth:`~object.__str__`,
+:meth:`~object.__add__`, etc.), descriptors (methods are also descriptors), and
+variable names listed in :attr:`~Enum._ignore_`.
 
-Note:  if your enumeration defines :meth:`__new__` and/or :meth:`__init__`,
+Note:  if your enumeration defines :meth:`~object.__new__` and/or :meth:`~object.__init__`,
 any value(s) given to the enum member will be passed into those methods.
 See `Planet`_ for an example.
 
 .. note::
 
-    The :meth:`__new__` method, if defined, is used during creation of the Enum
-    members; it is then replaced by Enum's :meth:`__new__` which is used after
+    The :meth:`~object.__new__` method, if defined, is used during creation of the Enum
+    members; it is then replaced by Enum's :meth:`~object.__new__` which is used after
     class creation for lookup of existing members.  See :ref:`new-vs-init` for
     more details.
 
@@ -542,7 +545,7 @@ from that module.
     nested in other classes.
 
 It is possible to modify how enum members are pickled/unpickled by defining
-:meth:`__reduce_ex__` in the enumeration class.  The default method is by-value,
+:meth:`~object.__reduce_ex__` in the enumeration class.  The default method is by-value,
 but enums with complicated values may want to use by-name::
 
     >>> import enum
@@ -578,7 +581,7 @@ values.  The last two options enable assigning arbitrary values to
 enumerations; the others auto-assign increasing integers starting with 1 (use
 the ``start`` parameter to specify a different starting value).  A
 new class derived from :class:`Enum` is returned.  In other words, the above
-assignment to :class:`Animal` is equivalent to::
+assignment to :class:`!Animal` is equivalent to::
 
     >>> class Animal(Enum):
     ...     ANT = 1
@@ -606,7 +609,7 @@ The solution is to specify the module name explicitly as follows::
     the source, pickling will be disabled.
 
 The new pickle protocol 4 also, in some circumstances, relies on
-:attr:`~definition.__qualname__` being set to the location where pickle will be able
+:attr:`~type.__qualname__` being set to the location where pickle will be able
 to find the class.  For example, if the class was made available in class
 SomeData in the global scope::
 
@@ -889,7 +892,7 @@ simple to implement independently::
         pass
 
 This demonstrates how similar derived enumerations can be defined; for example
-a :class:`FloatEnum` that mixes in :class:`float` instead of :class:`int`.
+a :class:`!FloatEnum` that mixes in :class:`float` instead of :class:`int`.
 
 Some rules:
 
@@ -903,32 +906,32 @@ Some rules:
    additional type, all the members must have values of that type, e.g.
    :class:`int` above.  This restriction does not apply to mix-ins which only
    add methods and don't specify another type.
-4. When another data type is mixed in, the :attr:`value` attribute is *not the
+4. When another data type is mixed in, the :attr:`~Enum.value` attribute is *not the
    same* as the enum member itself, although it is equivalent and will compare
    equal.
-5. A ``data type`` is a mixin that defines :meth:`__new__`, or a
+5. A ``data type`` is a mixin that defines :meth:`~object.__new__`, or a
    :class:`~dataclasses.dataclass`
 6. %-style formatting:  ``%s`` and ``%r`` call the :class:`Enum` class's
-   :meth:`__str__` and :meth:`__repr__` respectively; other codes (such as
+   :meth:`~object.__str__` and :meth:`~object.__repr__` respectively; other codes (such as
    ``%i`` or ``%h`` for IntEnum) treat the enum member as its mixed-in type.
 7. :ref:`Formatted string literals <f-strings>`, :meth:`str.format`,
-   and :func:`format` will use the enum's :meth:`__str__` method.
+   and :func:`format` will use the enum's :meth:`~object.__str__` method.
 
 .. note::
 
    Because :class:`IntEnum`, :class:`IntFlag`, and :class:`StrEnum` are
    designed to be drop-in replacements for existing constants, their
-   :meth:`__str__` method has been reset to their data types'
-   :meth:`__str__` method.
+   :meth:`~object.__str__` method has been reset to their data types'
+   :meth:`~object.__str__` method.
 
 .. _new-vs-init:
 
-When to use :meth:`__new__` vs. :meth:`__init__`
-------------------------------------------------
+When to use :meth:`~object.__new__` vs. :meth:`~object.__init__`
+----------------------------------------------------------------
 
-:meth:`__new__` must be used whenever you want to customize the actual value of
+:meth:`~object.__new__` must be used whenever you want to customize the actual value of
 the :class:`Enum` member.  Any other modifications may go in either
-:meth:`__new__` or :meth:`__init__`, with :meth:`__init__` being preferred.
+:meth:`~object.__new__` or :meth:`~object.__init__`, with :meth:`~object.__init__` being preferred.
 
 For example, if you want to pass several items to the constructor, but only
 want one of them to be the value::
@@ -967,11 +970,11 @@ Finer Points
 Supported ``__dunder__`` names
 """"""""""""""""""""""""""""""
 
-:attr:`__members__` is a read-only ordered mapping of ``member_name``:``member``
+:attr:`~enum.EnumType.__members__` is a read-only ordered mapping of ``member_name``:``member``
 items.  It is only available on the class.
 
-:meth:`__new__`, if specified, must create and return the enum members; it is
-also a very good idea to set the member's :attr:`_value_` appropriately.  Once
+:meth:`~object.__new__`, if specified, must create and return the enum members; it is
+also a very good idea to set the member's :attr:`~Enum._value_` appropriately.  Once
 all the members are created it is no longer used.
 
 
@@ -987,9 +990,9 @@ Supported ``_sunder_`` names
   from the final class
 - :meth:`~Enum._generate_next_value_` -- used to get an appropriate value for
   an enum member; may be overridden
-- :meth:`~Enum._add_alias_` -- adds a new name as an alias to an existing
+- :meth:`~EnumType._add_alias_` -- adds a new name as an alias to an existing
   member.
-- :meth:`~Enum._add_value_alias_` -- adds a new value as an alias to an
+- :meth:`~EnumType._add_value_alias_` -- adds a new value as an alias to an
   existing member.  See `MultiValueEnum`_ for an example.
 
   .. note::
@@ -1007,7 +1010,7 @@ Supported ``_sunder_`` names
 .. versionadded:: 3.7 ``_ignore_``
 .. versionadded:: 3.13 ``_add_alias_``, ``_add_value_alias_``
 
-To help keep Python 2 / Python 3 code in sync an :attr:`_order_` attribute can
+To help keep Python 2 / Python 3 code in sync an :attr:`~Enum._order_` attribute can
 be provided.  It will be checked against the actual order of the enumeration
 and raise an error if the two do not match::
 
@@ -1025,7 +1028,7 @@ and raise an error if the two do not match::
 
 .. note::
 
-    In Python 2 code the :attr:`_order_` attribute is necessary as definition
+    In Python 2 code the :attr:`~Enum._order_` attribute is necessary as definition
     order is lost before it can be recorded.
 
 
@@ -1150,6 +1153,14 @@ the following are true:
     >>> (Color.RED | Color.GREEN).name
     'RED|GREEN'
 
+    >>> class Perm(IntFlag):
+    ...     R = 4
+    ...     W = 2
+    ...     X = 1
+    ...
+    >>> (Perm.R & Perm.W).name is None  # effectively Perm(0)
+    True
+
 - multi-bit flags, aka aliases, can be returned from operations::
 
     >>> Color.RED | Color.BLUE
@@ -1206,12 +1217,12 @@ Enum Classes
 ^^^^^^^^^^^^
 
 The :class:`EnumType` metaclass is responsible for providing the
-:meth:`__contains__`, :meth:`__dir__`, :meth:`__iter__` and other methods that
+:meth:`~object.__contains__`, :meth:`~object.__dir__`, :meth:`~object.__iter__` and other methods that
 allow one to do things with an :class:`Enum` class that fail on a typical
 class, such as ``list(Color)`` or ``some_enum_var in Color``.  :class:`EnumType` is
 responsible for ensuring that various other methods on the final :class:`Enum`
-class are correct (such as :meth:`__new__`, :meth:`__getnewargs__`,
-:meth:`__str__` and :meth:`__repr__`).
+class are correct (such as :meth:`~object.__new__`, :meth:`~object.__getnewargs__`,
+:meth:`~object.__str__` and :meth:`~object.__repr__`).
 
 Flag Classes
 ^^^^^^^^^^^^
@@ -1226,7 +1237,7 @@ Enum Members (aka instances)
 
 The most interesting thing about enum members is that they are singletons.
 :class:`EnumType` creates them all while it is creating the enum class itself,
-and then puts a custom :meth:`__new__` in place to ensure that no new ones are
+and then puts a custom :meth:`~object.__new__` in place to ensure that no new ones are
 ever instantiated by returning only the existing member instances.
 
 Flag Members
@@ -1274,7 +1285,7 @@ is. There are several ways to define this type of simple enumeration:
 - use instances of :class:`auto` for the value
 - use instances of :class:`object` as the value
 - use a descriptive string as the value
-- use a tuple as the value and a custom :meth:`__new__` to replace the
+- use a tuple as the value and a custom :meth:`~object.__new__` to replace the
   tuple with an :class:`int` value
 
 Using any of these methods signifies to the user that these values are not
@@ -1310,7 +1321,7 @@ Using :class:`object` would look like::
     <Color.GREEN: <object object at 0x...>>
 
 This is also a good example of why you might want to write your own
-:meth:`__repr__`::
+:meth:`~object.__repr__`::
 
     >>> class Color(Enum):
     ...     RED = object()
@@ -1338,10 +1349,10 @@ Using a string as the value would look like::
     <Color.GREEN: 'go'>
 
 
-Using a custom :meth:`__new__`
-""""""""""""""""""""""""""""""
+Using a custom :meth:`~object.__new__`
+""""""""""""""""""""""""""""""""""""""
 
-Using an auto-numbering :meth:`__new__` would look like::
+Using an auto-numbering :meth:`~object.__new__` would look like::
 
     >>> class AutoNumber(Enum):
     ...     def __new__(cls):
@@ -1387,8 +1398,8 @@ to handle any extra arguments::
 
 .. note::
 
-    The :meth:`__new__` method, if defined, is used during creation of the Enum
-    members; it is then replaced by Enum's :meth:`__new__` which is used after
+    The :meth:`~object.__new__` method, if defined, is used during creation of the Enum
+    members; it is then replaced by Enum's :meth:`~object.__new__` which is used after
     class creation for lookup of existing members.
 
 .. warning::
@@ -1494,7 +1505,7 @@ Supports having more than one value per member::
 Planet
 ^^^^^^
 
-If :meth:`__new__` or :meth:`__init__` is defined, the value of the enum member
+If :meth:`~object.__new__` or :meth:`~object.__init__` is defined, the value of the enum member
 will be passed to those methods::
 
     >>> class Planet(Enum):
@@ -1525,7 +1536,7 @@ will be passed to those methods::
 TimePeriod
 ^^^^^^^^^^
 
-An example to show the :attr:`_ignore_` attribute in use::
+An example to show the :attr:`~Enum._ignore_` attribute in use::
 
     >>> from datetime import timedelta
     >>> class Period(timedelta, Enum):
diff --git a/Doc/howto/free-threading-extensions.rst b/Doc/howto/free-threading-extensions.rst
new file mode 100644
index 00000000000000..6abe93d71ad529
--- /dev/null
+++ b/Doc/howto/free-threading-extensions.rst
@@ -0,0 +1,280 @@
+.. highlight:: c
+
+.. _freethreading-extensions-howto:
+
+******************************************
+C API Extension Support for Free Threading
+******************************************
+
+Starting with the 3.13 release, CPython has experimental support for running
+with the :term:`global interpreter lock` (GIL) disabled in a configuration
+called :term:`free threading`.  This document describes how to adapt C API
+extensions to support free threading.
+
+
+Identifying the Free-Threaded Build in C
+========================================
+
+The CPython C API exposes the ``Py_GIL_DISABLED`` macro: in the free-threaded
+build it's defined to ``1``, and in the regular build it's not defined.
+You can use it to enable code that only runs under the free-threaded build::
+
+    #ifdef Py_GIL_DISABLED
+    /* code that only runs in the free-threaded build */
+    #endif
+
+Module Initialization
+=====================
+
+Extension modules need to explicitly indicate that they support running with
+the GIL disabled; otherwise importing the extension will raise a warning and
+enable the GIL at runtime.
+
+There are two ways to indicate that an extension module supports running with
+the GIL disabled depending on whether the extension uses multi-phase or
+single-phase initialization.
+
+Multi-Phase Initialization
+..........................
+
+Extensions that use multi-phase initialization (i.e.,
+:c:func:`PyModuleDef_Init`) should add a :c:data:`Py_mod_gil` slot in the
+module definition.  If your extension supports older versions of CPython,
+you should guard the slot with a :c:data:`PY_VERSION_HEX` check.
+
+::
+
+    static struct PyModuleDef_Slot module_slots[] = {
+        ...
+    #if PY_VERSION_HEX >= 0x030D0000
+        {Py_mod_gil, Py_MOD_GIL_NOT_USED},
+    #endif
+        {0, NULL}
+    };
+
+    static struct PyModuleDef moduledef = {
+        PyModuleDef_HEAD_INIT,
+        .m_slots = module_slots,
+        ...
+    };
+
+
+Single-Phase Initialization
+...........................
+
+Extensions that use single-phase initialization (i.e.,
+:c:func:`PyModule_Create`) should call :c:func:`PyUnstable_Module_SetGIL` to
+indicate that they support running with the GIL disabled.  The function is
+only defined in the free-threaded build, so you should guard the call with
+``#ifdef Py_GIL_DISABLED`` to avoid compilation errors in the regular build.
+
+::
+
+    static struct PyModuleDef moduledef = {
+        PyModuleDef_HEAD_INIT,
+        ...
+    };
+
+    PyMODINIT_FUNC
+    PyInit_mymodule(void)
+    {
+        PyObject *m = PyModule_Create(&moduledef);
+        if (m == NULL) {
+            return NULL;
+        }
+    #ifdef Py_GIL_DISABLED
+        PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+    #endif
+        return m;
+    }
+
+
+General API Guidelines
+======================
+
+Most of the C API is thread-safe, but there are some exceptions.
+
+* **Struct Fields**: Accessing fields in Python C API objects or structs
+  directly is not thread-safe if the field may be concurrently modified.
+* **Macros**: Accessor macros like :c:macro:`PyList_GET_ITEM` and
+  :c:macro:`PyList_SET_ITEM` do not perform any error checking or locking.
+  These macros are not thread-safe if the container object may be modified
+  concurrently.
+* **Borrowed References**: C API functions that return
+  :term:`borrowed references <borrowed reference>` may not be thread-safe if
+  the containing object is modified concurrently.  See the section on
+  :ref:`borrowed references <borrowed-references>` for more information.
+
+
+Container Thread Safety
+.......................
+
+Containers like :c:struct:`PyListObject`,
+:c:struct:`PyDictObject`, and :c:struct:`PySetObject` perform internal locking
+in the free-threaded build.  For example, the :c:func:`PyList_Append` will
+lock the list before appending an item.
+
+.. _PyDict_Next:
+
+``PyDict_Next``
+'''''''''''''''
+
+A notable exception is :c:func:`PyDict_Next`, which does not lock the
+dictionary.  You should use :c:macro:`Py_BEGIN_CRITICAL_SECTION` to protect
+the dictionary while iterating over it if the dictionary may be concurrently
+modified::
+
+    Py_BEGIN_CRITICAL_SECTION(dict);
+    PyObject *key, *value;
+    Py_ssize_t pos = 0;
+    while (PyDict_Next(dict, &pos, &key, &value)) {
+        ...
+    }
+    Py_END_CRITICAL_SECTION();
+
+
+Borrowed References
+===================
+
+.. _borrowed-references:
+
+Some C API functions return :term:`borrowed references <borrowed reference>`.
+These APIs are not thread-safe if the containing object is modified
+concurrently.  For example, it's not safe to use :c:func:`PyList_GetItem`
+if the list may be modified concurrently.
+
+The following table lists some borrowed reference APIs and their replacements
+that return :term:`strong references <strong reference>`.
+
++-----------------------------------+-----------------------------------+
+| Borrowed reference API            | Strong reference API              |
++===================================+===================================+
+| :c:func:`PyList_GetItem`          | :c:func:`PyList_GetItemRef`       |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyDict_GetItem`          | :c:func:`PyDict_GetItemRef`       |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyDict_GetItemWithError` | :c:func:`PyDict_GetItemRef`       |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyDict_GetItemString`    | :c:func:`PyDict_GetItemStringRef` |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyDict_SetDefault`       | :c:func:`PyDict_SetDefaultRef`    |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyDict_Next`             | none (see :ref:`PyDict_Next`)     |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyWeakref_GetObject`     | :c:func:`PyWeakref_GetRef`        |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyWeakref_GET_OBJECT`    | :c:func:`PyWeakref_GetRef`        |
++-----------------------------------+-----------------------------------+
+| :c:func:`PyImport_AddModule`      | :c:func:`PyImport_AddModuleRef`   |
++-----------------------------------+-----------------------------------+
+
+Not all APIs that return borrowed references are problematic.  For
+example, :c:func:`PyTuple_GetItem` is safe because tuples are immutable.
+Similarly, not all uses of the above APIs are problematic.  For example,
+:c:func:`PyDict_GetItem` is often used for parsing keyword argument
+dictionaries in function calls; those keyword argument dictionaries are
+effectively private (not accessible by other threads), so using borrowed
+references in that context is safe.
+
+Some of these functions were added in Python 3.13.  You can use the
+`pythoncapi-compat <https://github.com/python/pythoncapi-compat>`_ package
+to provide implementations of these functions for older Python versions.
+
+
+.. _free-threaded-memory-allocation:
+
+Memory Allocation APIs
+======================
+
+Python's memory management C API provides functions in three different
+:ref:`allocation domains <allocator-domains>`: "raw", "mem", and "object".
+For thread-safety, the free-threaded build requires that only Python objects
+are allocated using the object domain, and that all Python object are
+allocated using that domain.  This differs from the prior Python versions,
+where this was only a best practice and not a hard requirement.
+
+.. note::
+
+   Search for uses of :c:func:`PyObject_Malloc` in your
+   extension and check that the allocated memory is used for Python objects.
+   Use :c:func:`PyMem_Malloc` to allocate buffers instead of
+   :c:func:`PyObject_Malloc`.
+
+
+Thread State and GIL APIs
+=========================
+
+Python provides a set of functions and macros to manage thread state and the
+GIL, such as:
+
+* :c:func:`PyGILState_Ensure` and :c:func:`PyGILState_Release`
+* :c:func:`PyEval_SaveThread` and :c:func:`PyEval_RestoreThread`
+* :c:macro:`Py_BEGIN_ALLOW_THREADS` and :c:macro:`Py_END_ALLOW_THREADS`
+
+These functions should still be used in the free-threaded build to manage
+thread state even when the :term:`GIL` is disabled.  For example, if you
+create a thread outside of Python, you must call :c:func:`PyGILState_Ensure`
+before calling into the Python API to ensure that the thread has a valid
+Python thread state.
+
+You should continue to call :c:func:`PyEval_SaveThread` or
+:c:macro:`Py_BEGIN_ALLOW_THREADS` around blocking operations, such as I/O or
+lock acquisitions, to allow other threads to run the
+:term:`cyclic garbage collector <garbage collection>`.
+
+
+Protecting Internal Extension State
+===================================
+
+Your extension may have internal state that was previously protected by the
+GIL.  You may need to add locking to protect this state.  The approach will
+depend on your extension, but some common patterns include:
+
+* **Caches**: global caches are a common source of shared state.  Consider
+  using a lock to protect the cache or disabling it in the free-threaded build
+  if the cache is not critical for performance.
+* **Global State**: global state may need to be protected by a lock or moved
+  to thread local storage. C11 and C++11 provide the ``thread_local`` or
+  ``_Thread_local`` for
+  `thread-local storage <https://en.cppreference.com/w/c/language/storage_duration>`_.
+
+
+Building Extensions for the Free-Threaded Build
+===============================================
+
+C API extensions need to be built specifically for the free-threaded build.
+The wheels, shared libraries, and binaries are indicated by a ``t`` suffix.
+
+* `pypa/manylinux <https://github.com/pypa/manylinux>`_ supports the
+  free-threaded build, with the ``t`` suffix, such as ``python3.13t``.
+* `pypa/cibuildwheel <https://github.com/pypa/cibuildwheel>`_ supports the
+  free-threaded build if you set
+  `CIBW_FREE_THREADED_SUPPORT <https://cibuildwheel.pypa.io/en/stable/options/#free-threaded-support>`_.
+
+Limited C API and Stable ABI
+............................
+
+The free-threaded build does not currently support the
+:ref:`Limited C API <limited-c-api>` or the stable ABI.  If you use
+`setuptools <https://setuptools.pypa.io/en/latest/setuptools.html>`_ to build
+your extension and currently set ``py_limited_api=True`` you can use
+``py_limited_api=not sysconfig.get_config_var("Py_GIL_DISABLED")`` to opt out
+of the limited API when building with the free-threaded build.
+
+.. note::
+    You will need to build separate wheels specifically for the free-threaded
+    build.  If you currently use the stable ABI, you can continue to build a
+    single wheel for multiple non-free-threaded Python versions.
+
+
+Windows
+.......
+
+Due to a limitation of the official Windows installer, you will need to
+manually define ``Py_GIL_DISABLED=1`` when building extensions from source.
+
+.. seealso::
+
+   `Porting Extension Modules to Support Free-Threading
+   <https://py-free-threading.github.io/porting/>`_:
+   A community-maintained porting guide for extension authors.
diff --git a/Doc/howto/free-threading-python.rst b/Doc/howto/free-threading-python.rst
new file mode 100644
index 00000000000000..b21e3287ecaa3f
--- /dev/null
+++ b/Doc/howto/free-threading-python.rst
@@ -0,0 +1,154 @@
+.. _freethreading-python-howto:
+
+**********************************************
+Python experimental support for free threading
+**********************************************
+
+Starting with the 3.13 release, CPython has experimental support for a build of
+Python called :term:`free threading` where the :term:`global interpreter lock`
+(GIL) is disabled.  Free-threaded execution allows for full utilization of the
+available processing power by running threads in parallel on available CPU cores.
+While not all software will benefit from this automatically, programs
+designed with threading in mind will run faster on multi-core hardware.
+
+**The free-threaded mode is experimental** and work is ongoing to improve it:
+expect some bugs and a substantial single-threaded performance hit.
+
+This document describes the implications of free threading
+for Python code.  See :ref:`freethreading-extensions-howto` for information on
+how to write C extensions that support the free-threaded build.
+
+.. seealso::
+
+   :pep:`703` – Making the Global Interpreter Lock Optional in CPython for an
+   overall description of free-threaded Python.
+
+
+Installation
+============
+
+Starting with Python 3.13, the official macOS and Windows installers
+optionally support installing free-threaded Python binaries.  The installers
+are available at https://www.python.org/downloads/.
+
+For information on other platforms, see the `Installing a Free-Threaded Python
+<https://py-free-threading.github.io/installing_cpython/>`_, a
+community-maintained installation guide for installing free-threaded Python.
+
+When building CPython from source, the :option:`--disable-gil` configure option
+should be used to build a free-threaded Python interpreter.
+
+
+Identifying free-threaded Python
+================================
+
+To check if the current interpreter supports free-threading, :option:`python -VV <-V>`
+and :attr:`sys.version` contain "experimental free-threading build".
+The new :func:`sys._is_gil_enabled` function can be used to check whether
+the GIL is actually disabled in the running process.
+
+The ``sysconfig.get_config_var("Py_GIL_DISABLED")`` configuration variable can
+be used to determine whether the build supports free threading.  If the variable
+is set to ``1``, then the build supports free threading.  This is the recommended
+mechanism for decisions related to the build configuration.
+
+
+The global interpreter lock in free-threaded Python
+===================================================
+
+Free-threaded builds of CPython support optionally running with the GIL enabled
+at runtime using the environment variable :envvar:`PYTHON_GIL` or
+the command-line option :option:`-X gil`.
+
+The GIL may also automatically be enabled when importing a C-API extension
+module that is not explicitly marked as supporting free threading.  A warning
+will be printed in this case.
+
+In addition to individual package documentation, the following websites track
+the status of popular packages support for free threading:
+
+* https://py-free-threading.github.io/tracking/
+* https://hugovk.github.io/free-threaded-wheels/
+
+
+Thread safety
+=============
+
+The free-threaded build of CPython aims to provide similar thread-safety
+behavior at the Python level to the default GIL-enabled build.  Built-in
+types like :class:`dict`, :class:`list`, and :class:`set` use internal locks
+to protect against concurrent modifications in ways that behave similarly to
+the GIL.  However, Python has not historically guaranteed specific behavior for
+concurrent modifications to these built-in types, so this should be treated
+as a description of the current implementation, not a guarantee of current or
+future behavior.
+
+.. note::
+
+   It's recommended to use the :class:`threading.Lock` or other synchronization
+   primitives instead of relying on the internal locks of built-in types, when
+   possible.
+
+
+Known limitations
+=================
+
+This section describes known limitations of the free-threaded CPython build.
+
+Immortalization
+---------------
+
+The free-threaded build of the 3.13 release makes some objects :term:`immortal`.
+Immortal objects are not deallocated and have reference counts that are
+never modified.  This is done to avoid reference count contention that would
+prevent efficient multi-threaded scaling.
+
+An object will be made immortal when a new thread is started for the first time
+after the main thread is running.  The following objects are immortalized:
+
+* :ref:`function <user-defined-funcs>` objects declared at the module level
+* :ref:`method <instance-methods>` descriptors
+* :ref:`code <code-objects>` objects
+* :term:`module` objects and their dictionaries
+* :ref:`classes <classes>` (type objects)
+
+Because immortal objects are never deallocated, applications that create many
+objects of these types may see increased memory usage.  This is expected to be
+addressed in the 3.14 release.
+
+Additionally, numeric and string literals in the code as well as strings
+returned by :func:`sys.intern` are also immortalized.  This behavior is
+expected to remain in the 3.14 free-threaded build.
+
+
+Frame objects
+-------------
+
+It is not safe to access :ref:`frame <frame-objects>` objects from other
+threads and doing so may cause your program to crash .  This means that
+:func:`sys._current_frames` is generally not safe to use in a free-threaded
+build.  Functions like :func:`inspect.currentframe` and :func:`sys._getframe`
+are generally safe as long as the resulting frame object is not passed to
+another thread.
+
+Iterators
+---------
+
+Sharing the same iterator object between multiple threads is generally not
+safe and threads may see duplicate or missing elements when iterating or crash
+the interpreter.
+
+
+Single-threaded performance
+---------------------------
+
+The free-threaded build has additional overhead when executing Python code
+compared to the default GIL-enabled build.  In 3.13, this overhead is about
+40% on the `pyperformance <https://pyperformance.readthedocs.io/>`_ suite.
+Programs that spend most of their time in C extensions or I/O will see
+less of an impact.  The largest impact is because the specializing adaptive
+interpreter (:pep:`659`) is disabled in the free-threaded build.  We expect
+to re-enable it in a thread-safe way in the 3.14 release.  This overhead is
+expected to be reduced in upcoming Python release.   We are aiming for an
+overhead of 10% or less on the pyperformance suite compared to the default
+GIL-enabled build.
diff --git a/Doc/howto/functional.rst b/Doc/howto/functional.rst
index b0f9d22d74f0e3..1f0608fb0fc53f 100644
--- a/Doc/howto/functional.rst
+++ b/Doc/howto/functional.rst
@@ -1,3 +1,5 @@
+.. _functional-howto:
+
 ********************************
   Functional Programming HOWTO
 ********************************
diff --git a/Doc/howto/gdb_helpers.rst b/Doc/howto/gdb_helpers.rst
index 53bbf7ddaa2ab9..98ce813ca4ab02 100644
--- a/Doc/howto/gdb_helpers.rst
+++ b/Doc/howto/gdb_helpers.rst
@@ -180,7 +180,7 @@ regular machine-level integer::
     (gdb) p some_python_integer
     $4 = 42
 
-The internal structure can be revealed with a cast to :c:expr:`PyLongObject *`:
+The internal structure can be revealed with a cast to :c:expr:`PyLongObject *`::
 
     (gdb) p *(PyLongObject*)some_python_integer
     $5 = {ob_base = {ob_base = {ob_refcnt = 8, ob_type = 0x3dad39f5e0}, ob_size = 1},
diff --git a/Doc/howto/index.rst b/Doc/howto/index.rst
index 065071e39a06c5..c09f92c9528ee1 100644
--- a/Doc/howto/index.rst
+++ b/Doc/howto/index.rst
@@ -2,16 +2,14 @@
  Python HOWTOs
 ***************
 
-Python HOWTOs are documents that cover a single, specific topic,
-and attempt to cover it fairly completely. Modelled on the Linux
-Documentation Project's HOWTO collection, this collection is an
+Python HOWTOs are documents that cover a specific topic in-depth.
+Modeled on the Linux Documentation Project's HOWTO collection, this collection is an
 effort to foster documentation that's more detailed than the
 Python Library Reference.
 
-Currently, the HOWTOs are:
-
 .. toctree::
    :maxdepth: 1
+   :hidden:
 
    cporting.rst
    curses.rst
@@ -34,4 +32,37 @@ Currently, the HOWTOs are:
    isolating-extensions.rst
    timerfd.rst
    mro.rst
+   free-threading-python.rst
+   free-threading-extensions.rst
+
+General:
+
+* :ref:`annotations-howto`
+* :ref:`argparse-tutorial`
+* :ref:`descriptorhowto`
+* :ref:`enum-howto`
+* :ref:`functional-howto`
+* :ref:`ipaddress-howto`
+* :ref:`logging-howto`
+* :ref:`logging-cookbook`
+* :ref:`regex-howto`
+* :ref:`sortinghowto`
+* :ref:`unicode-howto`
+* :ref:`urllib-howto`
+
+Advanced development:
+
+* :ref:`curses-howto`
+* :ref:`freethreading-python-howto`
+* :ref:`freethreading-extensions-howto`
+* :ref:`isolating-extensions-howto`
+* :ref:`python_2.3_mro`
+* :ref:`socket-howto`
+* :ref:`timerfd-howto`
+* :ref:`cporting-howto`
+
+Debugging and profiling:
 
+* :ref:`gdb`
+* :ref:`instrumentation`
+* :ref:`perf_profiling`
diff --git a/Doc/howto/instrumentation.rst b/Doc/howto/instrumentation.rst
index 9c99fcecce1fcb..6e03ef20a21fa3 100644
--- a/Doc/howto/instrumentation.rst
+++ b/Doc/howto/instrumentation.rst
@@ -307,7 +307,7 @@ Available static markers
 .. object:: gc__start(int generation)
 
    Fires when the Python interpreter starts a garbage collection cycle.
-   ``arg0`` is the generation to scan, like :func:`gc.collect()`.
+   ``arg0`` is the generation to scan, like :func:`gc.collect`.
 
 .. object:: gc__done(long collected)
 
diff --git a/Doc/howto/isolating-extensions.rst b/Doc/howto/isolating-extensions.rst
index e35855deedbe5f..a636e06bda8344 100644
--- a/Doc/howto/isolating-extensions.rst
+++ b/Doc/howto/isolating-extensions.rst
@@ -339,7 +339,7 @@ That is, heap types should:
 - Define a traverse function using ``Py_tp_traverse``, which
   visits the type (e.g. using ``Py_VISIT(Py_TYPE(self))``).
 
-Please refer to the the documentation of
+Please refer to the documentation of
 :c:macro:`Py_TPFLAGS_HAVE_GC` and :c:member:`~PyTypeObject.tp_traverse`
 for additional considerations.
 
diff --git a/Doc/howto/logging-cookbook.rst b/Doc/howto/logging-cookbook.rst
index 60d88204b795f6..849a7526d40180 100644
--- a/Doc/howto/logging-cookbook.rst
+++ b/Doc/howto/logging-cookbook.rst
@@ -1267,11 +1267,8 @@ to adapt in your own applications.
 
 You could also write your own handler which uses the :class:`~multiprocessing.Lock`
 class from the :mod:`multiprocessing` module to serialize access to the
-file from your processes. The existing :class:`FileHandler` and subclasses do
-not make use of :mod:`multiprocessing` at present, though they may do so in the
-future. Note that at present, the :mod:`multiprocessing` module does not provide
-working lock functionality on all platforms (see
-https://bugs.python.org/issue3770).
+file from your processes. The stdlib :class:`FileHandler` and subclasses do
+not make use of :mod:`multiprocessing`.
 
 .. currentmodule:: logging.handlers
 
@@ -4022,7 +4019,7 @@ As you can see, this output isn't ideal. That's because the underlying code
 which writes to ``sys.stderr`` makes multiple writes, each of which results in a
 separate logged line (for example, the last three lines above). To get around
 this problem, you need to buffer things and only output log lines when newlines
-are seen. Let's use a slghtly better implementation of ``LoggerWriter``:
+are seen. Let's use a slightly better implementation of ``LoggerWriter``:
 
 .. code-block:: python
 
diff --git a/Doc/howto/logging.rst b/Doc/howto/logging.rst
index ab758a885b3556..3182d5664ab6ec 100644
--- a/Doc/howto/logging.rst
+++ b/Doc/howto/logging.rst
@@ -1,3 +1,5 @@
+.. _logging-howto:
+
 =============
 Logging HOWTO
 =============
@@ -380,8 +382,52 @@ Logging Flow
 The flow of log event information in loggers and handlers is illustrated in the
 following diagram.
 
-.. image:: logging_flow.png
-   :class: invert-in-dark-mode
+.. only:: not html
+
+   .. image:: logging_flow.*
+
+.. raw:: html
+   :file: logging_flow.svg
+
+.. raw:: html
+
+   <script>
+   /*
+    * This snippet is needed to handle the case where a light or dark theme is
+    * chosen via the theme is selected in the page. We call the existing handler
+    * and then add a dark-theme class to the body when the dark theme is selected.
+    * The SVG styling (above) then does the rest.
+    *
+    * If the pydoc theme is updated to set the dark-theme class, this snippet
+    * won't be needed any more.
+    */
+   (function() {
+     var oldActivateTheme = activateTheme;
+
+     function updateBody(theme) {
+        let elem = document.body;
+
+        elem.classList.remove('dark-theme');
+        elem.classList.remove('light-theme');
+        if (theme === 'dark') {
+            elem.classList.add('dark-theme');
+        }
+        else if (theme === 'light') {
+            elem.classList.add('light-theme');
+        }
+     }
+
+     activateTheme = function(theme) {
+        oldActivateTheme(theme);
+        updateBody(theme);
+     };
+     /*
+      * If the page is refreshed, make sure we update the body - the overriding
+      * of activateTheme won't have taken effect yet.
+      */
+      updateBody(localStorage.getItem('currentTheme') || 'auto');
+   })();
+   </script>
 
 Loggers
 ^^^^^^^
diff --git a/Doc/howto/logging_flow.png b/Doc/howto/logging_flow.png
index d65e597f811db5..d60ed7c031585a 100644
Binary files a/Doc/howto/logging_flow.png and b/Doc/howto/logging_flow.png differ
diff --git a/Doc/howto/logging_flow.svg b/Doc/howto/logging_flow.svg
new file mode 100644
index 00000000000000..4974994ac6b400
--- /dev/null
+++ b/Doc/howto/logging_flow.svg
@@ -0,0 +1,327 @@
+<svg width="22cm" height="23cm" viewBox="1 1 439 446" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+  <!-- Invert color in dark mode -->
+  <style type="text/css">
+    svg {
+      background-color: transparent !important;
+    }
+    line {
+      stroke: #000000;
+      fill: none;
+      stroke-opacity: 1;
+    }
+    polygon, rect {
+      fill: none;
+      stroke: #000000;
+      fill-opacity: 1;
+      stroke-opacity: 1;
+    }
+    polygon.filled {
+      fill: #000000;
+    }
+    polyline {
+      fill: none;
+      stroke-opacity: 1;
+      stroke: #000000;
+    }
+    text {
+      fill: #000000;
+      fill-opacity: 1;
+      stroke: none;
+      font-family: sans-serif;
+      font-style: normal;
+      font-weight: normal;
+      text-anchor: start;
+    }
+    @media (prefers-color-scheme: dark) {
+      polygon, rect, polyline, line {
+        stroke: #ffffff;
+      }
+      polygon.filled {
+        fill: #ffffff;
+      }
+      text {
+        fill: #ffffff;
+      }
+      image {
+        filter: invert(100%) hue-rotate(180deg) saturate(1.25);
+      }
+    }
+    /* These rules are for when the theme selector is used, perhaps in contrast to the browser theme. */
+    body.dark-theme polygon, body.dark-theme rect, body.dark-theme polyline, body.dark-theme line {
+      stroke: #ffffff;
+    }
+    body.dark-theme polygon.filled {
+      fill: #ffffff;
+    }
+    body.dark-theme text {
+      fill: #ffffff;
+    }
+    body.light-theme polygon, body.light-theme rect, body.light-theme polyline, body.light-theme line {
+      stroke: #000000;
+    }
+    body.light-theme polygon.filled {
+      fill: #000000;
+    }
+    body.light-theme text {
+      fill: #000000;
+    }
+  </style>
+
+  <defs />
+  <g id="Background">
+    <rect style="stroke-width: 1.8; stroke-dasharray: 3;" x="227.504" y="1.91011" width="211.607" height="207.375" rx="0" ry="0" />
+    <rect style="stroke-width: 1.2;" x="230.966" y="5.62454" width="68.4216" height="21.9166" rx="0" ry="0" />
+    <rect style="stroke-width: 1.2;" x="5.27912" y="5.70399" width="68.4216" height="21.9166" rx="0" ry="0" />
+    <text font-size="6.77333" style="font-weight: 700;" x="17.0649" y="19.0071">
+      <tspan x="17.0649" y="19.0071">Logger flow</tspan>
+    </text>
+    <g>
+      <rect x="81.5533" y="106.469" width="44.45" height="25.9333" rx="0" ry="0" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="117.256">
+        <tspan x="103.778" y="117.256">Create</tspan>
+        <tspan x="103.778" y="125.723" style="font-family: monospace">LogRecord</tspan>
+      </text>
+    </g>
+    <g>
+      <line x1="103.778" y1="82.8734" x2="103.778" y2="102.351" />
+      <polygon fill-rule="evenodd" points="103.778,105.351 101.778,101.351 103.778,102.351 105.778,101.351 " />
+    </g>
+    <g>
+      <line x1="103.774" y1="3.65583" x2="103.778" y2="30.3755" />
+      <polygon fill-rule="evenodd" points="103.778,33.3755 101.778,29.3758 103.778,30.3755 105.778,29.3752 " />
+    </g>
+    <text font-size="6.77333" style="text-anchor: middle;" x="144.365" y="10.4604">
+      <tspan x="143.798" y="10.4604">Logging call in user</tspan>
+      <tspan x="143.798" y="18.927">code, e.g.</tspan>
+    </text>
+    <text font-size="6.77333" style="font-family: monospace;" x="110.837" y="27.4696">
+      <tspan x="111.893" y="27.4696">logger.info(...)</tspan>
+    </text>
+    <g>
+      <line x1="155.62" y1="58.6834" x2="183.943" y2="58.6924" />
+      <polygon fill-rule="evenodd" points="186.943,58.6933 182.942,60.6921 183.943,58.6924 182.943,56.6921 " />
+    </g>
+    <g>
+      <rect x="188.061" y="49.9604" width="24.4" height="17.4667" rx="6" ry="6" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="200.261" y="60.7475">
+        <tspan x="200.261" y="60.7475">Stop</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="103.778,162.482 169.307,193.042 103.778,223.603 38.2493,193.042 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="186.629">
+        <tspan x="103.778" y="188.741">Does a filter attached</tspan>
+        <tspan x="103.778" y="197.208">to logger reject the</tspan>
+        <tspan x="103.778" y="205.675">record?</tspan>
+      </text>
+    </g>
+    <g>
+      <line x1="103.778" y1="132.402" x2="103.778" y2="158.364" />
+      <polygon class="filled" fill-rule="evenodd" points="103.778,161.364 101.778,157.364 103.778,158.364 105.778,157.364 " />
+    </g>
+    <g>
+      <rect x="75.2033" y="249.478" width="57.15" height="34.4" rx="0" ry="0" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="260.265">
+        <tspan x="103.778" y="260.265">Pass record to</tspan>
+        <tspan x="103.778" y="268.732">handlers of</tspan>
+        <tspan x="103.778" y="277.198">current logger</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="103.778,326.569 158.193,352.399 103.778,378.229 49.3637,352.399 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="350.22">
+        <tspan x="103.778" y="351.276">Is propagate true for</tspan>
+        <tspan x="103.778" y="359.742">current logger?</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="103.778,399.9 150.573,422.994 103.778,446.087 56.984,422.994 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="420.814">
+        <tspan x="103.778" y="422.926">Is there a parent</tspan>
+        <tspan x="103.778" y="431.393">logger?</tspan>
+      </text>
+    </g>
+    <g>
+      <rect x="2.43852" y="295.984" width="63.9" height="26.5909" rx="0" ry="0" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="34.3885" y="307.1">
+        <tspan x="34.3885" y="307.1">Set current</tspan>
+        <tspan x="34.3885" y="315.566">logger to parent</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="278.422,240.202 330.96,266.686 278.422,293.169 225.885,266.686 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="278.422" y="264.506">
+        <tspan x="278.422" y="266.618">At least one handler</tspan>
+        <tspan x="278.422" y="275.085">in hierarchy?</tspan>
+      </text>
+    </g>
+    <g>
+      <rect x="298.963" y="312.257" width="57.75" height="25.9333" rx="0" ry="0" />
+      <text font-size="6.77333" x="327.838" y="323.044">
+        <tspan x="301" y="324.100">Use</tspan>
+        <tspan x="315" y="324.100" style="font-family: monospace">lastResort</tspan>
+        <tspan x="316" y="332.567">handler</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="320.041,35.7307 373.377,60.8536 320.041,85.9765 266.704,60.8536 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="320.041" y="58.6741">
+        <tspan x="320.041" y="58.6741">Handler enabled for</tspan>
+        <tspan x="320.041" y="67.1407">level of record?</tspan>
+      </text>
+    </g>
+    <g>
+      <polygon fill-rule="evenodd" points="320.041,105.448 386.002,135.748 320.041,166.047 254.08,135.748 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="320.041" y="129.335">
+        <tspan x="320.041" y="132.508">Does a filter attached</tspan>
+        <tspan x="320.041" y="140.970">to handler reject the</tspan>
+        <tspan x="320.041" y="149.436">record?</tspan>
+      </text>
+    </g>
+    <g>
+      <rect x="409.532" y="52.4436" width="24.4" height="17.4667" rx="6" ry="6" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="421.732" y="63.2307">
+        <tspan x="421.732" y="63.2307">Stop</tspan>
+      </text>
+    </g>
+    <g>
+      <rect x="271.091" y="185.519" width="97.9" height="17.4667" rx="6" ry="6" />
+      <text font-size="6.77333" style="text-anchor: middle;" x="320.041" y="196.306">
+        <tspan x="320.041" y="196.306">Emit (includes formatting)</tspan>
+      </text>
+    </g>
+    <text font-size="6.77333" style="font-weight: 700;" x="241.002" y="18.9277">
+      <tspan x="241.002" y="18.9277">Handler flow</tspan>
+    </text>
+    <g>
+      <polygon fill-rule="evenodd" points="103.778,34.4935 155.62,58.6834 103.778,82.8734 51.9368,58.6834 " />
+      <text font-size="6.77333" style="text-anchor: middle;" x="103.778" y="56.5039">
+        <tspan x="103.778" y="57.560">Logger enabled for</tspan>
+        <tspan x="103.778" y="66.026">level of call?</tspan>
+      </text>
+    </g>
+    <g>
+      <line x1="103.778" y1="223.603" x2="103.778" y2="245.36" />
+      <polygon class="filled" fill-rule="evenodd" points="103.778,248.36 101.778,244.36 103.778,245.36 105.778,244.36 " />
+    </g>
+    <g>
+      <line x1="103.778" y1="283.878" x2="103.778" y2="322.451" />
+      <polygon class="filled" fill-rule="evenodd" points="103.778,325.451 101.778,321.451 103.778,322.451 105.778,321.451 " />
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+    <g>
+      <polyline points="56.984,422.994 34.3885,422.994 34.3885,326.693 " />
+      <polygon class="filled" fill-rule="evenodd" points="34.3885,323.693 36.3885,327.693 34.3885,326.693 32.3885,327.693 " />
+    </g>
+    <g>
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+    <g>
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+    </g>
+    <g>
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+    <g>
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+      <polygon class="filled" fill-rule="evenodd" points="200.261,68.5451 202.261,72.5451 200.261,71.5451 198.261,72.5451 " />
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+    <g>
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+      <polygon class="filled" fill-rule="evenodd" points="200.261,68.5451 202.261,72.5451 200.261,71.5451 198.261,72.5451 " />
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+    </g>
+    <g>
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+      <polygon class="filled" fill-rule="evenodd" points="320.041,104.33 318.041,100.33 320.041,101.33 322.041,100.33 " />
+    </g>
+    <g>
+      <line x1="320.041" y1="166.047" x2="320.041" y2="181.401" />
+      <polygon class="filled" fill-rule="evenodd" points="320.041,184.401 318.041,180.401 320.041,181.401 322.041,180.401 " />
+    </g>
+    <g>
+      <polyline points="386.002,135.748 421.732,135.748 421.732,74.0283 " />
+      <polygon class="filled" fill-rule="evenodd" points="421.732,71.0283 423.732,75.0283 421.732,74.0283 419.732,75.0283 " />
+    </g>
+    <g>
+      <line x1="373.377" y1="60.8536" x2="405.415" y2="61.1401" />
+      <polygon class="filled" fill-rule="evenodd" points="408.414,61.1669 404.397,63.1311 405.415,61.1401 404.433,59.1312 " />
+    </g>
+    <text font-size="6.77333" x="164.96" y="55.5649">
+      <tspan x="164.96" y="55.5649">No</tspan>
+    </text>
+    <text font-size="6.77333" x="106.571" y="97.8453">
+      <tspan x="106.571" y="97.8453">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="173.856" y="188.452">
+      <tspan x="173.856" y="188.452">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="107.446" y="239.221">
+      <tspan x="107.446" y="239.221">No</tspan>
+    </text>
+    <text font-size="6.77333" x="174.731" y="349.418">
+      <tspan x="174.731" y="349.418">No</tspan>
+    </text>
+    <text font-size="6.77333" x="106.571" y="390.507">
+      <tspan x="106.571" y="390.507">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="39.4722" y="417.667">
+      <tspan x="39.4722" y="417.667">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="174.731" y="417.667">
+      <tspan x="174.731" y="417.667">No</tspan>
+    </text>
+    <text font-size="6.77333" x="281.451" y="313.406">
+      <tspan x="281.451" y="313.406">No</tspan>
+    </text>
+    <text font-size="6.77333" x="333.909" y="263.96">
+      <tspan x="333.909" y="263.96">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="333.307" y="105.598">
+      <tspan x="333.307" y="105.598"></tspan>
+    </text>
+    <text font-size="6.77333" x="385.766" y="56.9098">
+      <tspan x="385.766" y="56.9098">No</tspan>
+    </text>
+    <text font-size="6.77333" x="333.307" y="105.598">
+      <tspan x="333.307" y="105.598"></tspan>
+    </text>
+    <text font-size="6.77333" x="333.307" y="105.598">
+      <tspan x="333.307" y="105.598"></tspan>
+    </text>
+    <text font-size="6.77333" x="397.102" y="130.471">
+      <tspan x="397.102" y="130.471">Yes</tspan>
+    </text>
+    <text font-size="6.77333" x="323.563" y="178.785">
+      <tspan x="323.563" y="178.785">No</tspan>
+    </text>
+    <text font-size="6.77333" x="333.307" y="105.598">
+      <tspan x="333.307" y="105.598"></tspan>
+    </text>
+    <text font-size="6.77333" x="323.75" y="99.0042">
+      <tspan x="323.75" y="99.0042">Yes</tspan>
+    </text>
+    <text font-size="6.77323" style="text-anchor: middle;" x="355.762" y="18.2449">
+      <tspan x="355.762" y="18.2449">Record passed</tspan>
+      <tspan x="355.762" y="26.7116">to handler</tspan>
+    </text>
+    <line style="stroke-dasharray: 5" x1="330.96" y1="266.686" x2="377.733" y2="267.908" />
+    <g>
+      <polyline style="fill: none; stroke-opacity: 1; stroke-dasharray: 5" points="356.713,325.224 377.733,325.224 377.733,214.711 " />
+      <polygon class="filled" fill-rule="evenodd" points="377.733,211.711 379.733,215.711 377.733,214.711 375.733,215.711 " />
+    </g>
+  </g>
+</svg>
diff --git a/Doc/howto/mro.rst b/Doc/howto/mro.rst
index a44ef6848af4f3..0872bedcd3a2d3 100644
--- a/Doc/howto/mro.rst
+++ b/Doc/howto/mro.rst
@@ -335,7 +335,7 @@ E is more specialized than C, even if it is in a higher level.
 
 A lazy programmer can obtain the MRO directly from Python 2.2, since in
 this case it coincides with the Python 2.3 linearization.  It is enough
-to invoke the .mro() method of class A:
+to invoke the :meth:`~type.mro` method of class A:
 
   >>> A.mro()  # doctest: +NORMALIZE_WHITESPACE
   [<class 'A'>, <class 'B'>, <class 'E'>,
@@ -398,7 +398,7 @@ with inheritance diagram
 
 We see that class G inherits from F and E, with F *before* E:  therefore
 we would expect the attribute *G.remember2buy* to be inherited by
-*F.rembermer2buy* and not by *E.remember2buy*:  nevertheless Python 2.2
+*F.remember2buy* and not by *E.remember2buy*:  nevertheless Python 2.2
 gives
 
   >>> G.remember2buy  # doctest: +SKIP
@@ -426,7 +426,7 @@ In this case the MRO is GFEF and the local precedence ordering is
 preserved.
 
 As a general rule, hierarchies such as the previous one should be
-avoided, since it is unclear if F should override E or viceversa.
+avoided, since it is unclear if F should override E or vice-versa.
 Python 2.3 solves the ambiguity by raising an exception in the creation
 of class G, effectively stopping the programmer from generating
 ambiguous hierarchies.  The reason for that is that the C3 algorithm
diff --git a/Doc/howto/pyporting.rst b/Doc/howto/pyporting.rst
index d560364107bd12..9f73c811cfcbc0 100644
--- a/Doc/howto/pyporting.rst
+++ b/Doc/howto/pyporting.rst
@@ -18,9 +18,9 @@ please see :ref:`cporting-howto`.
 
 The archived python-porting_ mailing list may contain some useful guidance.
 
-Since Python 3.13 the original porting guide was discontinued.
+Since Python 3.11 the original porting guide was discontinued.
 You can find the old guide in the
-`archive <https://docs.python.org/3.12/howto/pyporting.html>`_.
+`archive <https://docs.python.org/3.10/howto/pyporting.html>`_.
 
 
 Third-party guides
diff --git a/Doc/includes/wasm-ios-notavail.rst b/Doc/includes/wasm-ios-notavail.rst
deleted file mode 100644
index c820665f5e403c..00000000000000
--- a/Doc/includes/wasm-ios-notavail.rst
+++ /dev/null
@@ -1,8 +0,0 @@
-.. include for modules that don't work on WASM or iOS
-
-.. availability:: not WASI, not iOS.
-
-   This module does not work or is not available on WebAssembly platforms, or
-   on iOS. See :ref:`wasm-availability` for more information on WASM
-   availability; see :ref:`iOS-availability` for more information on iOS
-   availability.
diff --git a/Doc/includes/wasm-mobile-notavail.rst b/Doc/includes/wasm-mobile-notavail.rst
new file mode 100644
index 00000000000000..725b0f7a86d17d
--- /dev/null
+++ b/Doc/includes/wasm-mobile-notavail.rst
@@ -0,0 +1,6 @@
+.. include for modules that don't work on WASM or mobile platforms
+
+.. availability:: not Android, not iOS, not WASI.
+
+   This module is not supported on :ref:`mobile platforms <mobile-availability>`
+   or :ref:`WebAssembly platforms <wasm-availability>`.
diff --git a/Doc/library/__future__.rst b/Doc/library/__future__.rst
index 762f8b4695b3dd..1ebff4409b1e95 100644
--- a/Doc/library/__future__.rst
+++ b/Doc/library/__future__.rst
@@ -1,5 +1,5 @@
-:mod:`__future__` --- Future statement definitions
-==================================================
+:mod:`!__future__` --- Future statement definitions
+===================================================
 
 .. module:: __future__
    :synopsis: Future statement definitions
diff --git a/Doc/library/__main__.rst b/Doc/library/__main__.rst
index c999253f781b10..647ff9da04d10d 100644
--- a/Doc/library/__main__.rst
+++ b/Doc/library/__main__.rst
@@ -1,5 +1,5 @@
-:mod:`__main__` --- Top-level code environment
-==============================================
+:mod:`!__main__` --- Top-level code environment
+===============================================
 
 .. module:: __main__
    :synopsis: The environment where top-level code is run. Covers command-line
@@ -251,9 +251,9 @@ attribute will include the package's path if imported::
     >>> asyncio.__main__.__name__
     'asyncio.__main__'
 
-This won't work for ``__main__.py`` files in the root directory of a .zip file
-though.  Hence, for consistency, minimal ``__main__.py`` like the :mod:`venv`
-one mentioned below are preferred.
+This won't work for ``__main__.py`` files in the root directory of a
+``.zip`` file though.  Hence, for consistency, a minimal ``__main__.py``
+without a ``__name__`` check is preferred.
 
 .. seealso::
 
diff --git a/Doc/library/_thread.rst b/Doc/library/_thread.rst
index 297f50a46e0692..6a66fc4c64bc45 100644
--- a/Doc/library/_thread.rst
+++ b/Doc/library/_thread.rst
@@ -1,5 +1,5 @@
-:mod:`_thread` --- Low-level threading API
-==========================================
+:mod:`!_thread` --- Low-level threading API
+===========================================
 
 .. module:: _thread
    :synopsis: Low-level threading API.
@@ -169,14 +169,14 @@ Lock objects have the following methods:
    time can acquire a lock --- that's their reason for existence).
 
    If the *blocking* argument is present, the action depends on its
-   value: if it is False, the lock is only acquired if it can be acquired
-   immediately without waiting, while if it is True, the lock is acquired
+   value: if it is false, the lock is only acquired if it can be acquired
+   immediately without waiting, while if it is true, the lock is acquired
    unconditionally as above.
 
    If the floating-point *timeout* argument is present and positive, it
    specifies the maximum wait time in seconds before returning.  A negative
    *timeout* argument specifies an unbounded wait.  You cannot specify
-   a *timeout* if *blocking* is False.
+   a *timeout* if *blocking* is false.
 
    The return value is ``True`` if the lock is acquired successfully,
    ``False`` if not.
@@ -213,23 +213,20 @@ In addition to these methods, lock objects can also be used via the
 
 .. index:: pair: module; signal
 
-* Threads interact strangely with interrupts: the :exc:`KeyboardInterrupt`
-  exception will be received by an arbitrary thread.  (When the :mod:`signal`
-  module is available, interrupts always go to the main thread.)
+* Interrupts always go to the main thread (the :exc:`KeyboardInterrupt`
+  exception will be received by that thread.)
 
 * Calling :func:`sys.exit` or raising the :exc:`SystemExit` exception is
   equivalent to calling :func:`_thread.exit`.
 
-* It is not possible to interrupt the :meth:`~threading.Lock.acquire` method on
-  a lock --- the :exc:`KeyboardInterrupt` exception will happen after the lock
-  has been acquired.
+* It is platform-dependent whether the :meth:`~threading.Lock.acquire` method
+  on a lock can be interrupted (so that the :exc:`KeyboardInterrupt` exception
+  will happen immediately, rather than only after the lock has been acquired or
+  the operation has timed out). It can be interrupted on POSIX, but not on
+  Windows.
 
 * When the main thread exits, it is system defined whether the other threads
   survive.  On most systems, they are killed without executing
   :keyword:`try` ... :keyword:`finally` clauses or executing object
   destructors.
 
-* When the main thread exits, it does not do any of its usual cleanup (except
-  that :keyword:`try` ... :keyword:`finally` clauses are honored), and the
-  standard I/O files are not flushed.
-
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 10e2cba50e49b0..38d744e97d087d 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -1,5 +1,5 @@
-:mod:`abc` --- Abstract Base Classes
-====================================
+:mod:`!abc` --- Abstract Base Classes
+=====================================
 
 .. module:: abc
    :synopsis: Abstract base classes according to :pep:`3119`.
@@ -99,7 +99,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
       that you can customize the behavior of :func:`issubclass` further without the
       need to call :meth:`register` on every class you want to consider a
       subclass of the ABC.  (This class method is called from the
-      :meth:`~class.__subclasscheck__` method of the ABC.)
+      :meth:`~type.__subclasscheck__` method of the ABC.)
 
       This method should return ``True``, ``False`` or :data:`NotImplemented`.  If
       it returns ``True``, the *subclass* is considered a subclass of this ABC.
@@ -149,7 +149,7 @@ a helper class :class:`ABC` to alternatively define ABCs through inheritance:
    The :meth:`__subclasshook__` class method defined here says that any class
    that has an :meth:`~iterator.__iter__` method in its
    :attr:`~object.__dict__` (or in that of one of its base classes, accessed
-   via the :attr:`~class.__mro__` list) is considered a ``MyIterable`` too.
+   via the :attr:`~type.__mro__` list) is considered a ``MyIterable`` too.
 
    Finally, the last line makes ``Foo`` a virtual subclass of ``MyIterable``,
    even though it does not define an :meth:`~iterator.__iter__` method (it uses
diff --git a/Doc/library/aifc.rst b/Doc/library/aifc.rst
new file mode 100644
index 00000000000000..a756d679036ecb
--- /dev/null
+++ b/Doc/library/aifc.rst
@@ -0,0 +1,15 @@
+:mod:`!aifc` --- Read and write AIFF and AIFC files
+===================================================
+
+.. module:: aifc
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!aifc` module was
+`Python 3.12 <https://docs.python.org/3.12/library/aifc.html>`_.
diff --git a/Doc/library/allos.rst b/Doc/library/allos.rst
index f7105d8af8e28b..1aed340b2527ac 100644
--- a/Doc/library/allos.rst
+++ b/Doc/library/allos.rst
@@ -15,15 +15,9 @@ but they are available on most other systems as well.  Here's an overview:
    os.rst
    io.rst
    time.rst
-   argparse.rst
-   getopt.rst
    logging.rst
    logging.config.rst
    logging.handlers.rst
-   getpass.rst
-   curses.rst
-   curses.ascii.rst
-   curses.panel.rst
    platform.rst
    errno.rst
    ctypes.rst
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index eaddd44e2defd7..d4adc164b1bc3d 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1,5 +1,5 @@
-:mod:`argparse` --- Parser for command-line options, arguments and sub-commands
-===============================================================================
+:mod:`!argparse` --- Parser for command-line options, arguments and subcommands
+================================================================================
 
 .. module:: argparse
    :synopsis: Command-line option and argument parsing library.
@@ -11,6 +11,18 @@
 
 **Source code:** :source:`Lib/argparse.py`
 
+.. note::
+
+   While :mod:`argparse` is the default recommended standard library module
+   for implementing basic command line applications, authors with more
+   exacting requirements for exactly how their command line applications
+   behave may find it doesn't provide the necessary level of control.
+   Refer to :ref:`choosing-an-argument-parser` for alternatives to
+   consider when ``argparse`` doesn't support behaviors that the application
+   requires (such as entirely disabling support for interspersed options and
+   positional arguments, or accepting option parameter values that start
+   with ``-`` even when they correspond to another defined option).
+
 --------------
 
 .. sidebar:: Tutorial
@@ -19,17 +31,13 @@
    introduction to Python command-line parsing, have a look at the
    :ref:`argparse tutorial <argparse-tutorial>`.
 
-The :mod:`argparse` module makes it easy to write user-friendly command-line
-interfaces. The program defines what arguments it requires, and :mod:`argparse`
-will figure out how to parse those out of :data:`sys.argv`.  The :mod:`argparse`
+The :mod:`!argparse` module makes it easy to write user-friendly command-line
+interfaces. The program defines what arguments it requires, and :mod:`!argparse`
+will figure out how to parse those out of :data:`sys.argv`.  The :mod:`!argparse`
 module also automatically generates help and usage messages.  The module
 will also issue errors when users give the program invalid arguments.
 
-
-Core Functionality
-------------------
-
-The :mod:`argparse` module's support for command-line interfaces is built
+The :mod:`!argparse` module's support for command-line interfaces is built
 around an instance of :class:`argparse.ArgumentParser`.  It is a container for
 argument specifications and has options that apply to the parser as whole::
 
@@ -53,133 +61,9 @@ the extracted data in a :class:`argparse.Namespace` object::
    args = parser.parse_args()
    print(args.filename, args.count, args.verbose)
 
-
-Quick Links for add_argument()
-------------------------------
-
-============================ =========================================================== ==========================================================================================================================
-Name                         Description                                                 Values
-============================ =========================================================== ==========================================================================================================================
-action_                      Specify how an argument should be handled                   ``'store'``, ``'store_const'``, ``'store_true'``, ``'append'``, ``'append_const'``, ``'count'``, ``'help'``, ``'version'``
-choices_                     Limit values to a specific set of choices                   ``['foo', 'bar']``, ``range(1, 10)``, or :class:`~collections.abc.Container` instance
-const_                       Store a constant value
-default_                     Default value used when an argument is not provided         Defaults to ``None``
-dest_                        Specify the attribute name used in the result namespace
-help_                        Help message for an argument
-metavar_                     Alternate display name for the argument as shown in help
-nargs_                       Number of times the argument can be used                    :class:`int`, ``'?'``, ``'*'``, or ``'+'``
-required_                    Indicate whether an argument is required or optional        ``True`` or ``False``
-:ref:`type <argparse-type>`  Automatically convert an argument to the given type         :class:`int`, :class:`float`, ``argparse.FileType('w')``, or callable function
-============================ =========================================================== ==========================================================================================================================
-
-
-Example
--------
-
-The following code is a Python program that takes a list of integers and
-produces either the sum or the max::
-
-   import argparse
-
-   parser = argparse.ArgumentParser(description='Process some integers.')
-   parser.add_argument('integers', metavar='N', type=int, nargs='+',
-                       help='an integer for the accumulator')
-   parser.add_argument('--sum', dest='accumulate', action='store_const',
-                       const=sum, default=max,
-                       help='sum the integers (default: find the max)')
-
-   args = parser.parse_args()
-   print(args.accumulate(args.integers))
-
-Assuming the above Python code is saved into a file called ``prog.py``, it can
-be run at the command line and it provides useful help messages:
-
-.. code-block:: shell-session
-
-   $ python prog.py -h
-   usage: prog.py [-h] [--sum] N [N ...]
-
-   Process some integers.
-
-   positional arguments:
-    N           an integer for the accumulator
-
-   options:
-    -h, --help  show this help message and exit
-    --sum       sum the integers (default: find the max)
-
-When run with the appropriate arguments, it prints either the sum or the max of
-the command-line integers:
-
-.. code-block:: shell-session
-
-   $ python prog.py 1 2 3 4
-   4
-
-   $ python prog.py 1 2 3 4 --sum
-   10
-
-If invalid arguments are passed in, an error will be displayed:
-
-.. code-block:: shell-session
-
-   $ python prog.py a b c
-   usage: prog.py [-h] [--sum] N [N ...]
-   prog.py: error: argument N: invalid int value: 'a'
-
-The following sections walk you through this example.
-
-
-Creating a parser
-^^^^^^^^^^^^^^^^^
-
-The first step in using the :mod:`argparse` is creating an
-:class:`ArgumentParser` object::
-
-   >>> parser = argparse.ArgumentParser(description='Process some integers.')
-
-The :class:`ArgumentParser` object will hold all the information necessary to
-parse the command line into Python data types.
-
-
-Adding arguments
-^^^^^^^^^^^^^^^^
-
-Filling an :class:`ArgumentParser` with information about program arguments is
-done by making calls to the :meth:`~ArgumentParser.add_argument` method.
-Generally, these calls tell the :class:`ArgumentParser` how to take the strings
-on the command line and turn them into objects.  This information is stored and
-used when :meth:`~ArgumentParser.parse_args` is called. For example::
-
-   >>> parser.add_argument('integers', metavar='N', type=int, nargs='+',
-   ...                     help='an integer for the accumulator')
-   >>> parser.add_argument('--sum', dest='accumulate', action='store_const',
-   ...                     const=sum, default=max,
-   ...                     help='sum the integers (default: find the max)')
-
-Later, calling :meth:`~ArgumentParser.parse_args` will return an object with
-two attributes, ``integers`` and ``accumulate``.  The ``integers`` attribute
-will be a list of one or more integers, and the ``accumulate`` attribute will be
-either the :func:`sum` function, if ``--sum`` was specified at the command line,
-or the :func:`max` function if it was not.
-
-
-Parsing arguments
-^^^^^^^^^^^^^^^^^
-
-:class:`ArgumentParser` parses arguments through the
-:meth:`~ArgumentParser.parse_args` method.  This will inspect the command line,
-convert each argument to the appropriate type and then invoke the appropriate action.
-In most cases, this means a simple :class:`Namespace` object will be built up from
-attributes parsed out of the command line::
-
-   >>> parser.parse_args(['--sum', '7', '-1', '42'])
-   Namespace(accumulate=<built-in function sum>, integers=[7, -1, 42])
-
-In a script, :meth:`~ArgumentParser.parse_args` will typically be called with no
-arguments, and the :class:`ArgumentParser` will automatically determine the
-command-line arguments from :data:`sys.argv`.
-
+.. note::
+   If you're looking for a guide about how to upgrade :mod:`optparse` code
+   to :mod:`!argparse`, see :ref:`Upgrading Optparse Code <upgrading-optparse-code>`.
 
 ArgumentParser objects
 ----------------------
@@ -228,7 +112,7 @@ ArgumentParser objects
    * allow_abbrev_ - Allows long options to be abbreviated if the
      abbreviation is unambiguous. (default: ``True``)
 
-   * exit_on_error_ - Determines whether or not ArgumentParser exits with
+   * exit_on_error_ - Determines whether or not :class:`!ArgumentParser` exits with
      error info when an error occurs. (default: ``True``)
 
    .. versionchanged:: 3.5
@@ -249,38 +133,21 @@ The following sections describe how each of these are used.
 prog
 ^^^^
 
-By default, :class:`ArgumentParser` objects use ``sys.argv[0]`` to determine
-how to display the name of the program in help messages.  This default is almost
-always desirable because it will make the help messages match how the program was
-invoked on the command line.  For example, consider a file named
-``myprogram.py`` with the following code::
-
-   import argparse
-   parser = argparse.ArgumentParser()
-   parser.add_argument('--foo', help='foo help')
-   args = parser.parse_args()
-
-The help for this program will display ``myprogram.py`` as the program name
-(regardless of where the program was invoked from):
-
-.. code-block:: shell-session
 
-   $ python myprogram.py --help
-   usage: myprogram.py [-h] [--foo FOO]
-
-   options:
-    -h, --help  show this help message and exit
-    --foo FOO   foo help
-   $ cd ..
-   $ python subdir/myprogram.py --help
-   usage: myprogram.py [-h] [--foo FOO]
+By default, :class:`ArgumentParser` calculates the name of the program
+to display in help messages depending on the way the Python interpreter was run:
 
-   options:
-    -h, --help  show this help message and exit
-    --foo FOO   foo help
+* The :func:`base name <os.path.basename>` of ``sys.argv[0]`` if a file was
+  passed as argument.
+* The Python interpreter name followed by ``sys.argv[0]`` if a directory or
+  a zipfile was passed as argument.
+* The Python interpreter name followed by ``-m`` followed by the
+  module or package name if the :option:`-m` option was used.
 
-To change this default behavior, another value can be supplied using the
-``prog=`` argument to :class:`ArgumentParser`::
+This default is almost always desirable because it will make the help messages
+match the string that was used to invoke the program on the command line.
+However, to change this default behavior, another value can be supplied using
+the ``prog=`` argument to :class:`ArgumentParser`::
 
    >>> parser = argparse.ArgumentParser(prog='myprogram')
    >>> parser.print_help()
@@ -309,22 +176,8 @@ usage
 ^^^^^
 
 By default, :class:`ArgumentParser` calculates the usage message from the
-arguments it contains::
-
-   >>> parser = argparse.ArgumentParser(prog='PROG')
-   >>> parser.add_argument('--foo', nargs='?', help='foo help')
-   >>> parser.add_argument('bar', nargs='+', help='bar help')
-   >>> parser.print_help()
-   usage: PROG [-h] [--foo [FOO]] bar [bar ...]
-
-   positional arguments:
-    bar          bar help
-
-   options:
-    -h, --help   show this help message and exit
-    --foo [FOO]  foo help
-
-The default message can be overridden with the ``usage=`` keyword argument::
+arguments it contains. The default message can be overridden with the
+``usage=`` keyword argument::
 
    >>> parser = argparse.ArgumentParser(prog='PROG', usage='%(prog)s [options]')
    >>> parser.add_argument('--foo', nargs='?', help='foo help')
@@ -352,16 +205,7 @@ Most calls to the :class:`ArgumentParser` constructor will use the
 ``description=`` keyword argument.  This argument gives a brief description of
 what the program does and how it works.  In help messages, the description is
 displayed between the command-line usage string and the help messages for the
-various arguments::
-
-   >>> parser = argparse.ArgumentParser(description='A foo that bars')
-   >>> parser.print_help()
-   usage: argparse.py [-h]
-
-   A foo that bars
-
-   options:
-    -h, --help  show this help message and exit
+various arguments.
 
 By default, the description will be line-wrapped so that it fits within the
 given space.  To change this behavior, see the formatter_class_ argument.
@@ -491,7 +335,7 @@ should not be line-wrapped::
     -h, --help  show this help message and exit
 
 :class:`RawTextHelpFormatter` maintains whitespace for all sorts of help text,
-including argument descriptions. However, multiple new lines are replaced with
+including argument descriptions. However, multiple newlines are replaced with
 one. If you wish to preserve multiple blank lines, add spaces between the
 newlines.
 
@@ -540,7 +384,7 @@ Most command-line options will use ``-`` as the prefix, e.g. ``-f/--foo``.
 Parsers that need to support different or additional prefix
 characters, e.g. for options
 like ``+f`` or ``/foo``, may specify them using the ``prefix_chars=`` argument
-to the ArgumentParser constructor::
+to the :class:`ArgumentParser` constructor::
 
    >>> parser = argparse.ArgumentParser(prog='PROG', prefix_chars='-+')
    >>> parser.add_argument('+f')
@@ -585,8 +429,8 @@ arguments will never be treated as file references.
 
 .. versionchanged:: 3.12
    :class:`ArgumentParser` changed encoding and errors to read arguments files
-   from default (e.g. :func:`locale.getpreferredencoding(False) <locale.getpreferredencoding>` and
-   ``"strict"``) to :term:`filesystem encoding and error handler`.
+   from default (e.g. :func:`locale.getpreferredencoding(False) <locale.getpreferredencoding>`
+   and ``"strict"``) to the :term:`filesystem encoding and error handler`.
    Arguments file should be encoded in UTF-8 instead of ANSI Codepage on Windows.
 
 
@@ -671,26 +515,9 @@ string was overridden.
 add_help
 ^^^^^^^^
 
-By default, ArgumentParser objects add an option which simply displays
-the parser's help message. For example, consider a file named
-``myprogram.py`` containing the following code::
-
-   import argparse
-   parser = argparse.ArgumentParser()
-   parser.add_argument('--foo', help='foo help')
-   args = parser.parse_args()
-
-If ``-h`` or ``--help`` is supplied at the command line, the ArgumentParser
-help will be printed:
-
-.. code-block:: shell-session
-
-   $ python myprogram.py --help
-   usage: myprogram.py [-h] [--foo FOO]
-
-   options:
-    -h, --help  show this help message and exit
-    --foo FOO   foo help
+By default, :class:`ArgumentParser` objects add an option which simply displays
+the parser's help message. If ``-h`` or ``--help`` is supplied at the command
+line, the :class:`!ArgumentParser` help will be printed.
 
 Occasionally, it may be useful to disable the addition of this help option.
 This can be achieved by passing ``False`` as the ``add_help=`` argument to
@@ -722,7 +549,8 @@ exit_on_error
 ^^^^^^^^^^^^^
 
 Normally, when you pass an invalid argument list to the :meth:`~ArgumentParser.parse_args`
-method of an :class:`ArgumentParser`, it will exit with error info.
+method of an :class:`ArgumentParser`, it will print a *message* to :data:`sys.stderr` and exit with a status
+code of 2.
 
 If the user would like to catch errors manually, the feature can be enabled by setting
 ``exit_on_error`` to ``False``::
@@ -743,15 +571,15 @@ If the user would like to catch errors manually, the feature can be enabled by s
 The add_argument() method
 -------------------------
 
-.. method:: ArgumentParser.add_argument(name or flags..., [action], [nargs], \
+.. method:: ArgumentParser.add_argument(name or flags..., *, [action], [nargs], \
                            [const], [default], [type], [choices], [required], \
                            [help], [metavar], [dest], [deprecated])
 
    Define how a single command-line argument should be parsed.  Each parameter
    has its own more detailed description below, but in short they are:
 
-   * `name or flags`_ - Either a name or a list of option strings, e.g. ``foo``
-     or ``-f, --foo``.
+   * `name or flags`_ - Either a name or a list of option strings, e.g. ``'foo'``
+     or ``'-f', '--foo'``.
 
    * action_ - The basic type of action to be taken when this argument is
      encountered at the command line.
@@ -782,7 +610,7 @@ The add_argument() method
 The following sections describe how each of these are used.
 
 
-.. _name_or_flags:
+.. _`name or flags`:
 
 name or flags
 ^^^^^^^^^^^^^
@@ -829,12 +657,7 @@ them, though most actions simply add an attribute to the object returned by
 how the command-line arguments should be handled. The supplied actions are:
 
 * ``'store'`` - This just stores the argument's value.  This is the default
-  action. For example::
-
-    >>> parser = argparse.ArgumentParser()
-    >>> parser.add_argument('--foo')
-    >>> parser.parse_args('--foo 1'.split())
-    Namespace(foo='1')
+  action.
 
 * ``'store_const'`` - This stores the value specified by the const_ keyword
   argument; note that the const_ keyword argument defaults to ``None``.  The
@@ -849,7 +672,7 @@ how the command-line arguments should be handled. The supplied actions are:
 * ``'store_true'`` and ``'store_false'`` - These are special cases of
   ``'store_const'`` used for storing the values ``True`` and ``False``
   respectively.  In addition, they create default values of ``False`` and
-  ``True`` respectively.  For example::
+  ``True`` respectively::
 
     >>> parser = argparse.ArgumentParser()
     >>> parser.add_argument('--foo', action='store_true')
@@ -881,6 +704,21 @@ how the command-line arguments should be handled. The supplied actions are:
     >>> parser.parse_args('--str --int'.split())
     Namespace(types=[<class 'str'>, <class 'int'>])
 
+* ``'extend'`` - This stores a list and appends each item from the multi-value
+  argument list to it.
+  The ``'extend'`` action is typically used with the nargs_ keyword argument
+  value ``'+'`` or ``'*'``.
+  Note that when nargs_ is ``None`` (the default) or ``'?'``, each
+  character of the argument string will be appended to the list.
+  Example usage::
+
+    >>> parser = argparse.ArgumentParser()
+    >>> parser.add_argument("--foo", action="extend", nargs="+", type=str)
+    >>> parser.parse_args(["--foo", "f1", "--foo", "f2", "f3", "f4"])
+    Namespace(foo=['f1', 'f2', 'f3', 'f4'])
+
+  .. versionadded:: 3.8
+
 * ``'count'`` - This counts the number of times a keyword argument occurs. For
   example, this is useful for increasing verbosity levels::
 
@@ -906,33 +744,28 @@ how the command-line arguments should be handled. The supplied actions are:
     >>> parser.parse_args(['--version'])
     PROG 2.0
 
-* ``'extend'`` - This stores a list, and extends each argument value to the
-  list.
-  Example usage::
-
-    >>> parser = argparse.ArgumentParser()
-    >>> parser.add_argument("--foo", action="extend", nargs="+", type=str)
-    >>> parser.parse_args(["--foo", "f1", "--foo", "f2", "f3", "f4"])
-    Namespace(foo=['f1', 'f2', 'f3', 'f4'])
+Only actions that consume command-line arguments (e.g. ``'store'``,
+``'append'`` or ``'extend'``) can be used with positional arguments.
 
-  .. versionadded:: 3.8
+.. class:: BooleanOptionalAction
 
-You may also specify an arbitrary action by passing an Action subclass or
-other object that implements the same interface. The ``BooleanOptionalAction``
-is available in ``argparse`` and adds support for boolean actions such as
-``--foo`` and ``--no-foo``::
+   You may also specify an arbitrary action by passing an :class:`Action` subclass or
+   other object that implements the same interface. The :class:`!BooleanOptionalAction`
+   is available in :mod:`!argparse` and adds support for boolean actions such as
+   ``--foo`` and ``--no-foo``::
 
-    >>> import argparse
-    >>> parser = argparse.ArgumentParser()
-    >>> parser.add_argument('--foo', action=argparse.BooleanOptionalAction)
-    >>> parser.parse_args(['--no-foo'])
-    Namespace(foo=False)
+       >>> import argparse
+       >>> parser = argparse.ArgumentParser()
+       >>> parser.add_argument('--foo', action=argparse.BooleanOptionalAction)
+       >>> parser.parse_args(['--no-foo'])
+       Namespace(foo=False)
 
-.. versionadded:: 3.9
+   .. versionadded:: 3.9
 
 The recommended way to create a custom action is to extend :class:`Action`,
-overriding the ``__call__`` method and optionally the ``__init__`` and
-``format_usage`` methods.
+overriding the :meth:`!__call__` method and optionally the :meth:`!__init__` and
+:meth:`!format_usage` methods. You can also register custom actions using the
+:meth:`~ArgumentParser.register` method and reference them by their registered name.
 
 An example of a custom action::
 
@@ -962,7 +795,7 @@ For more details, see :class:`Action`.
 nargs
 ^^^^^
 
-ArgumentParser objects usually associate a single command-line argument with a
+:class:`ArgumentParser` objects usually associate a single command-line argument with a
 single action to be taken.  The ``nargs`` keyword argument associates a
 different number of command-line arguments with a single action.
 See also :ref:`specifying-ambiguous-arguments`. The supported values are:
@@ -1044,6 +877,8 @@ See also :ref:`specifying-ambiguous-arguments`. The supported values are:
 If the ``nargs`` keyword argument is not provided, the number of arguments consumed
 is determined by the action_.  Generally this means a single command-line argument
 will be consumed and a single item (not a list) will be produced.
+Actions that do not consume command-line arguments (e.g.
+``'store_const'``) set ``nargs=0``.
 
 
 .. _const:
@@ -1094,7 +929,7 @@ was not present at the command line::
    Namespace(foo=42)
 
 If the target namespace already has an attribute set, the action *default*
-will not over write it::
+will not overwrite it::
 
    >>> parser = argparse.ArgumentParser()
    >>> parser.add_argument('--foo', default=42)
@@ -1122,6 +957,9 @@ is used when no command-line argument was present::
    >>> parser.parse_args([])
    Namespace(foo=42)
 
+For required_ arguments, the ``default`` value is ignored. For example, this
+applies to positional arguments with nargs_ values other than ``?`` or ``*``,
+or optional arguments marked as ``required=True``.
 
 Providing ``default=argparse.SUPPRESS`` causes no attribute to be added if the
 command-line argument was not present::
@@ -1148,10 +986,11 @@ necessary type-checking and type conversions to be performed.
 If the type_ keyword is used with the default_ keyword, the type converter
 is only applied if the default is a string.
 
-The argument to ``type`` can be any callable that accepts a single string.
+The argument to ``type`` can be a callable that accepts a single string or
+the name of a registered type (see :meth:`~ArgumentParser.register`)
 If the function raises :exc:`ArgumentTypeError`, :exc:`TypeError`, or
 :exc:`ValueError`, the exception is caught and a nicely formatted error
-message is displayed.  No other exception types are handled.
+message is displayed. Other exception types are not handled.
 
 Common built-in types and functions can be used as type converters:
 
@@ -1165,7 +1004,6 @@ Common built-in types and functions can be used as type converters:
    parser.add_argument('distance', type=float)
    parser.add_argument('street', type=ascii)
    parser.add_argument('code_point', type=ord)
-   parser.add_argument('source_file', type=open)
    parser.add_argument('dest_file', type=argparse.FileType('w', encoding='latin-1'))
    parser.add_argument('datapath', type=pathlib.Path)
 
@@ -1196,10 +1034,11 @@ better reporting than can be given by the ``type`` keyword.  A
 :exc:`FileNotFoundError` exception would not be handled at all.
 
 Even :class:`~argparse.FileType` has its limitations for use with the ``type``
-keyword.  If one argument uses *FileType* and then a subsequent argument fails,
-an error is reported but the file is not automatically closed.  In this case, it
-would be better to wait until after the parser has run and then use the
-:keyword:`with`-statement to manage the files.
+keyword.  If one argument uses :class:`~argparse.FileType` and then a
+subsequent argument fails, an error is reported but the file is not
+automatically closed.  In this case, it would be better to wait until after
+the parser has run and then use the :keyword:`with`-statement to manage the
+files.
 
 For type checkers that simply check against a fixed set of values, consider
 using the choices_ keyword instead.
@@ -1227,15 +1066,7 @@ if the argument was not one of the acceptable values::
 
 Note that inclusion in the *choices* sequence is checked after any type_
 conversions have been performed, so the type of the objects in the *choices*
-sequence should match the type_ specified::
-
-   >>> parser = argparse.ArgumentParser(prog='doors.py')
-   >>> parser.add_argument('door', type=int, choices=range(1, 4))
-   >>> print(parser.parse_args(['3']))
-   Namespace(door=3)
-   >>> parser.parse_args(['4'])
-   usage: doors.py [-h] {1,2,3}
-   doors.py: error: argument door: invalid choice: 4 (choose from 1, 2, 3)
+sequence should match the type_ specified.
 
 Any sequence can be passed as the *choices* value, so :class:`list` objects,
 :class:`tuple` objects, and custom sequences are all supported.
@@ -1254,7 +1085,7 @@ many choices), just specify an explicit metavar_.
 required
 ^^^^^^^^
 
-In general, the :mod:`argparse` module assumes that flags like ``-f`` and ``--bar``
+In general, the :mod:`!argparse` module assumes that flags like ``-f`` and ``--bar``
 indicate *optional* arguments, which can always be omitted at the command line.
 To make an option *required*, ``True`` can be specified for the ``required=``
 keyword argument to :meth:`~ArgumentParser.add_argument`::
@@ -1285,22 +1116,7 @@ help
 The ``help`` value is a string containing a brief description of the argument.
 When a user requests help (usually by using ``-h`` or ``--help`` at the
 command line), these ``help`` descriptions will be displayed with each
-argument::
-
-   >>> parser = argparse.ArgumentParser(prog='frobble')
-   >>> parser.add_argument('--foo', action='store_true',
-   ...                     help='foo the bars before frobbling')
-   >>> parser.add_argument('bar', nargs='+',
-   ...                     help='one of the bars to be frobbled')
-   >>> parser.parse_args(['-h'])
-   usage: frobble [-h] [--foo] bar [bar ...]
-
-   positional arguments:
-    bar     one of the bars to be frobbled
-
-   options:
-    -h, --help  show this help message and exit
-    --foo   foo the bars before frobbling
+argument.
 
 The ``help`` strings can include various format specifiers to avoid repetition
 of things like the program name or the argument default_.  The available
@@ -1322,7 +1138,7 @@ specifiers include the program name, ``%(prog)s`` and most keyword arguments to
 As the help string supports %-formatting, if you want a literal ``%`` to appear
 in the help string, you must escape it as ``%%``.
 
-:mod:`argparse` supports silencing the help entry for certain options, by
+:mod:`!argparse` supports silencing the help entry for certain options, by
 setting the ``help`` value to ``argparse.SUPPRESS``::
 
    >>> parser = argparse.ArgumentParser(prog='frobble')
@@ -1340,7 +1156,7 @@ metavar
 ^^^^^^^
 
 When :class:`ArgumentParser` generates help messages, it needs some way to refer
-to each expected argument.  By default, ArgumentParser objects use the dest_
+to each expected argument.  By default, :class:`!ArgumentParser` objects use the dest_
 value as the "name" of each object.  By default, for positional argument
 actions, the dest_ value is used directly, and for optional argument actions,
 the dest_ value is uppercased.  So, a single positional argument with
@@ -1455,7 +1271,7 @@ The ``deprecated`` keyword argument of
 specifies if the argument is deprecated and will be removed
 in the future.
 For arguments, if ``deprecated`` is ``True``, then a warning will be
-printed to standard error when the argument is used::
+printed to :data:`sys.stderr` when the argument is used::
 
    >>> import argparse
    >>> parser = argparse.ArgumentParser(prog='snake.py')
@@ -1466,13 +1282,13 @@ printed to standard error when the argument is used::
    snake.py: warning: option '--legs' is deprecated
    Namespace(legs=4)
 
-.. versionchanged:: 3.13
+.. versionadded:: 3.13
 
 
 Action classes
 ^^^^^^^^^^^^^^
 
-Action classes implement the Action API, a callable which returns a callable
+:class:`!Action` classes implement the Action API, a callable which returns a callable
 which processes arguments from the command-line. Any object which follows
 this API may be passed as the ``action`` parameter to
 :meth:`~ArgumentParser.add_argument`.
@@ -1481,40 +1297,46 @@ this API may be passed as the ``action`` parameter to
                   type=None, choices=None, required=False, help=None, \
                   metavar=None)
 
-Action objects are used by an ArgumentParser to represent the information
-needed to parse a single argument from one or more strings from the
-command line. The Action class must accept the two positional arguments
-plus any keyword arguments passed to :meth:`ArgumentParser.add_argument`
-except for the ``action`` itself.
+   :class:`!Action` objects are used by an :class:`ArgumentParser` to represent the information
+   needed to parse a single argument from one or more strings from the
+   command line. The :class:`!Action` class must accept the two positional arguments
+   plus any keyword arguments passed to :meth:`ArgumentParser.add_argument`
+   except for the ``action`` itself.
+
+   Instances of :class:`!Action` (or return value of any callable to the
+   ``action`` parameter) should have attributes :attr:`!dest`,
+   :attr:`!option_strings`, :attr:`!default`, :attr:`!type`, :attr:`!required`,
+   :attr:`!help`, etc. defined. The easiest way to ensure these attributes
+   are defined is to call :meth:`!Action.__init__`.
 
-Instances of Action (or return value of any callable to the ``action``
-parameter) should have attributes "dest", "option_strings", "default", "type",
-"required", "help", etc. defined. The easiest way to ensure these attributes
-are defined is to call ``Action.__init__``.
+   .. method:: __call__(parser, namespace, values, option_string=None)
 
-Action instances should be callable, so subclasses must override the
-``__call__`` method, which should accept four parameters:
+      :class:`!Action` instances should be callable, so subclasses must override the
+      :meth:`!__call__` method, which should accept four parameters:
 
-* ``parser`` - The ArgumentParser object which contains this action.
+      * *parser* - The :class:`ArgumentParser` object which contains this action.
 
-* ``namespace`` - The :class:`Namespace` object that will be returned by
-  :meth:`~ArgumentParser.parse_args`.  Most actions add an attribute to this
-  object using :func:`setattr`.
+      * *namespace* - The :class:`Namespace` object that will be returned by
+        :meth:`~ArgumentParser.parse_args`.  Most actions add an attribute to this
+        object using :func:`setattr`.
 
-* ``values`` - The associated command-line arguments, with any type conversions
-  applied.  Type conversions are specified with the type_ keyword argument to
-  :meth:`~ArgumentParser.add_argument`.
+      * *values* - The associated command-line arguments, with any type conversions
+        applied.  Type conversions are specified with the type_ keyword argument to
+        :meth:`~ArgumentParser.add_argument`.
 
-* ``option_string`` - The option string that was used to invoke this action.
-  The ``option_string`` argument is optional, and will be absent if the action
-  is associated with a positional argument.
+      * *option_string* - The option string that was used to invoke this action.
+        The ``option_string`` argument is optional, and will be absent if the action
+        is associated with a positional argument.
 
-The ``__call__`` method may perform arbitrary actions, but will typically set
-attributes on the ``namespace`` based on ``dest`` and ``values``.
+      The :meth:`!__call__` method may perform arbitrary actions, but will typically set
+      attributes on the ``namespace`` based on ``dest`` and ``values``.
+
+   .. method:: format_usage()
+
+      :class:`!Action` subclasses can define a :meth:`!format_usage` method that takes no argument
+      and return a string which will be used when printing the usage of the program.
+      If such method is not provided, a sensible default will be used.
 
-Action subclasses can define a ``format_usage`` method that takes no argument
-and return a string which will be used when printing the usage of the program.
-If such method is not provided, a sensible default will be used.
 
 The parse_args() method
 -----------------------
@@ -1526,7 +1348,7 @@ The parse_args() method
 
    Previous calls to :meth:`add_argument` determine exactly what objects are
    created and how they are assigned. See the documentation for
-   :meth:`add_argument` for details.
+   :meth:`!add_argument` for details.
 
    * args_ - List of strings to parse.  The default is taken from
      :data:`sys.argv`.
@@ -1682,7 +1504,7 @@ This feature can be disabled by setting :ref:`allow_abbrev` to ``False``.
 Beyond ``sys.argv``
 ^^^^^^^^^^^^^^^^^^^
 
-Sometimes it may be useful to have an ArgumentParser parse arguments other than those
+Sometimes it may be useful to have an :class:`ArgumentParser` parse arguments other than those
 of :data:`sys.argv`.  This can be accomplished by passing a list of strings to
 :meth:`~ArgumentParser.parse_args`.  This is useful for testing at the
 interactive prompt::
@@ -1709,29 +1531,29 @@ The Namespace object
    Simple class used by default by :meth:`~ArgumentParser.parse_args` to create
    an object holding attributes and return it.
 
-This class is deliberately simple, just an :class:`object` subclass with a
-readable string representation. If you prefer to have dict-like view of the
-attributes, you can use the standard Python idiom, :func:`vars`::
-
-   >>> parser = argparse.ArgumentParser()
-   >>> parser.add_argument('--foo')
-   >>> args = parser.parse_args(['--foo', 'BAR'])
-   >>> vars(args)
-   {'foo': 'BAR'}
-
-It may also be useful to have an :class:`ArgumentParser` assign attributes to an
-already existing object, rather than a new :class:`Namespace` object.  This can
-be achieved by specifying the ``namespace=`` keyword argument::
+   This class is deliberately simple, just an :class:`object` subclass with a
+   readable string representation. If you prefer to have dict-like view of the
+   attributes, you can use the standard Python idiom, :func:`vars`::
 
-   >>> class C:
-   ...     pass
-   ...
-   >>> c = C()
-   >>> parser = argparse.ArgumentParser()
-   >>> parser.add_argument('--foo')
-   >>> parser.parse_args(args=['--foo', 'BAR'], namespace=c)
-   >>> c.foo
-   'BAR'
+      >>> parser = argparse.ArgumentParser()
+      >>> parser.add_argument('--foo')
+      >>> args = parser.parse_args(['--foo', 'BAR'])
+      >>> vars(args)
+      {'foo': 'BAR'}
+
+   It may also be useful to have an :class:`ArgumentParser` assign attributes to an
+   already existing object, rather than a new :class:`Namespace` object.  This can
+   be achieved by specifying the ``namespace=`` keyword argument::
+
+      >>> class C:
+      ...     pass
+      ...
+      >>> c = C()
+      >>> parser = argparse.ArgumentParser()
+      >>> parser.add_argument('--foo')
+      >>> parser.parse_args(args=['--foo', 'BAR'], namespace=c)
+      >>> c.foo
+      'BAR'
 
 
 Other utilities
@@ -1740,38 +1562,38 @@ Other utilities
 Sub-commands
 ^^^^^^^^^^^^
 
-.. method:: ArgumentParser.add_subparsers([title], [description], [prog], \
+.. method:: ArgumentParser.add_subparsers(*, [title], [description], [prog], \
                                           [parser_class], [action], \
-                                          [option_strings], [dest], [required], \
+                                          [dest], [required], \
                                           [help], [metavar])
 
-   Many programs split up their functionality into a number of sub-commands,
-   for example, the ``svn`` program can invoke sub-commands like ``svn
+   Many programs split up their functionality into a number of subcommands,
+   for example, the ``svn`` program can invoke subcommands like ``svn
    checkout``, ``svn update``, and ``svn commit``.  Splitting up functionality
    this way can be a particularly good idea when a program performs several
    different functions which require different kinds of command-line arguments.
-   :class:`ArgumentParser` supports the creation of such sub-commands with the
-   :meth:`add_subparsers` method.  The :meth:`add_subparsers` method is normally
+   :class:`ArgumentParser` supports the creation of such subcommands with the
+   :meth:`!add_subparsers` method.  The :meth:`!add_subparsers` method is normally
    called with no arguments and returns a special action object.  This object
    has a single method, :meth:`~_SubParsersAction.add_parser`, which takes a
-   command name and any :class:`ArgumentParser` constructor arguments, and
-   returns an :class:`ArgumentParser` object that can be modified as usual.
+   command name and any :class:`!ArgumentParser` constructor arguments, and
+   returns an :class:`!ArgumentParser` object that can be modified as usual.
 
    Description of parameters:
 
-   * title - title for the sub-parser group in help output; by default
+   * *title* - title for the sub-parser group in help output; by default
      "subcommands" if description is provided, otherwise uses title for
      positional arguments
 
-   * description - description for the sub-parser group in help output, by
+   * *description* - description for the sub-parser group in help output, by
      default ``None``
 
-   * prog - usage information that will be displayed with sub-command help,
+   * *prog* - usage information that will be displayed with sub-command help,
      by default the name of the program and any positional arguments before the
      subparser argument
 
-   * parser_class - class which will be used to create sub-parser instances, by
-     default the class of the current parser (e.g. ArgumentParser)
+   * *parser_class* - class which will be used to create sub-parser instances, by
+     default the class of the current parser (e.g. :class:`ArgumentParser`)
 
    * action_ - the basic type of action to be taken when this argument is
      encountered at the command line
@@ -1784,15 +1606,15 @@ Sub-commands
 
    * help_ - help for sub-parser group in help output, by default ``None``
 
-   * metavar_ - string presenting available sub-commands in help; by default it
-     is ``None`` and presents sub-commands in form {cmd1, cmd2, ..}
+   * metavar_ - string presenting available subcommands in help; by default it
+     is ``None`` and presents subcommands in form {cmd1, cmd2, ..}
 
    Some example usage::
 
      >>> # create the top-level parser
      >>> parser = argparse.ArgumentParser(prog='PROG')
      >>> parser.add_argument('--foo', action='store_true', help='foo help')
-     >>> subparsers = parser.add_subparsers(help='sub-command help')
+     >>> subparsers = parser.add_subparsers(help='subcommand help')
      >>>
      >>> # create the parser for the "a" command
      >>> parser_a = subparsers.add_parser('a', help='a help')
@@ -1800,7 +1622,7 @@ Sub-commands
      >>>
      >>> # create the parser for the "b" command
      >>> parser_b = subparsers.add_parser('b', help='b help')
-     >>> parser_b.add_argument('--baz', choices='XYZ', help='baz help')
+     >>> parser_b.add_argument('--baz', choices=('X', 'Y', 'Z'), help='baz help')
      >>>
      >>> # parse some argument lists
      >>> parser.parse_args(['a', '12'])
@@ -1827,7 +1649,7 @@ Sub-commands
      usage: PROG [-h] [--foo] {a,b} ...
 
      positional arguments:
-       {a,b}   sub-command help
+       {a,b}   subcommand help
          a     a help
          b     b help
 
@@ -1898,12 +1720,12 @@ Sub-commands
 
    .. versionadded:: 3.13
 
-   One particularly effective way of handling sub-commands is to combine the use
+   One particularly effective way of handling subcommands is to combine the use
    of the :meth:`add_subparsers` method with calls to :meth:`set_defaults` so
    that each subparser knows which Python function it should execute.  For
    example::
 
-     >>> # sub-command functions
+     >>> # subcommand functions
      >>> def foo(args):
      ...     print(args.x * args.y)
      ...
@@ -1952,7 +1774,7 @@ Sub-commands
      Namespace(subparser_name='2', y='frobble')
 
    .. versionchanged:: 3.7
-      New *required* keyword argument.
+      New *required* keyword-only parameter.
 
 
 FileType objects
@@ -1988,13 +1810,14 @@ FileType objects
 Argument groups
 ^^^^^^^^^^^^^^^
 
-.. method:: ArgumentParser.add_argument_group(title=None, description=None)
+.. method:: ArgumentParser.add_argument_group(title=None, description=None, *, \
+                                              [argument_default], [conflict_handler])
 
    By default, :class:`ArgumentParser` groups command-line arguments into
    "positional arguments" and "options" when displaying help
    messages. When there is a better conceptual grouping of arguments than this
    default one, appropriate groups can be created using the
-   :meth:`add_argument_group` method::
+   :meth:`!add_argument_group` method::
 
      >>> parser = argparse.ArgumentParser(prog='PROG', add_help=False)
      >>> group = parser.add_argument_group('group')
@@ -2011,7 +1834,7 @@ Argument groups
    has an :meth:`~ArgumentParser.add_argument` method just like a regular
    :class:`ArgumentParser`.  When an argument is added to the group, the parser
    treats it just like a normal argument, but displays the argument in a
-   separate group for help messages.  The :meth:`add_argument_group` method
+   separate group for help messages.  The :meth:`!add_argument_group` method
    accepts *title* and *description* arguments which can be used to
    customize this display::
 
@@ -2033,6 +1856,11 @@ Argument groups
 
        --bar BAR  bar help
 
+   The optional, keyword-only parameters argument_default_ and conflict_handler_
+   allow for finer-grained control of the behavior of the argument group. These
+   parameters have the same meaning as in the :class:`ArgumentParser` constructor,
+   but apply specifically to the argument group rather than the entire parser.
+
    Note that any arguments not in your user-defined groups will end up back
    in the usual "positional arguments" and "optional arguments" sections.
 
@@ -2048,7 +1876,7 @@ Mutual exclusion
 
 .. method:: ArgumentParser.add_mutually_exclusive_group(required=False)
 
-   Create a mutually exclusive group. :mod:`argparse` will make sure that only
+   Create a mutually exclusive group. :mod:`!argparse` will make sure that only
    one of the arguments in the mutually exclusive group was present on the
    command line::
 
@@ -2185,20 +2013,20 @@ Partial parsing
 
 .. method:: ArgumentParser.parse_known_args(args=None, namespace=None)
 
-Sometimes a script may only parse a few of the command-line arguments, passing
-the remaining arguments on to another script or program. In these cases, the
-:meth:`~ArgumentParser.parse_known_args` method can be useful.  It works much like
-:meth:`~ArgumentParser.parse_args` except that it does not produce an error when
-extra arguments are present.  Instead, it returns a two item tuple containing
-the populated namespace and the list of remaining argument strings.
+   Sometimes a script may only parse a few of the command-line arguments, passing
+   the remaining arguments on to another script or program. In these cases, the
+   :meth:`~ArgumentParser.parse_known_args` method can be useful.  It works much like
+   :meth:`~ArgumentParser.parse_args` except that it does not produce an error when
+   extra arguments are present.  Instead, it returns a two item tuple containing
+   the populated namespace and the list of remaining argument strings.
 
-::
+   ::
 
-   >>> parser = argparse.ArgumentParser()
-   >>> parser.add_argument('--foo', action='store_true')
-   >>> parser.add_argument('bar')
-   >>> parser.parse_known_args(['--foo', '--badger', 'BAR', 'spam'])
-   (Namespace(bar='BAR', foo=True), ['--badger', 'spam'])
+      >>> parser = argparse.ArgumentParser()
+      >>> parser.add_argument('--foo', action='store_true')
+      >>> parser.add_argument('bar')
+      >>> parser.parse_known_args(['--foo', '--badger', 'BAR', 'spam'])
+      (Namespace(bar='BAR', foo=True), ['--badger', 'spam'])
 
 .. warning::
    :ref:`Prefix matching <prefix-matching>` rules apply to
@@ -2235,8 +2063,8 @@ Exiting methods
 .. method:: ArgumentParser.exit(status=0, message=None)
 
    This method terminates the program, exiting with the specified *status*
-   and, if given, it prints a *message* before that. The user can override
-   this method to handle these steps differently::
+   and, if given, it prints a *message* to :data:`sys.stderr` before that.
+   The user can override this method to handle these steps differently::
 
     class ErrorCatchingArgumentParser(argparse.ArgumentParser):
         def exit(self, status=0, message=None):
@@ -2246,8 +2074,8 @@ Exiting methods
 
 .. method:: ArgumentParser.error(message)
 
-   This method prints a usage message including the *message* to the
-   standard error and terminates the program with a status code of 2.
+   This method prints a usage message, including the *message*, to
+   :data:`sys.stderr` and terminates the program with a status code of 2.
 
 
 Intermixed parsing
@@ -2256,90 +2084,66 @@ Intermixed parsing
 .. method:: ArgumentParser.parse_intermixed_args(args=None, namespace=None)
 .. method:: ArgumentParser.parse_known_intermixed_args(args=None, namespace=None)
 
-A number of Unix commands allow the user to intermix optional arguments with
-positional arguments.  The :meth:`~ArgumentParser.parse_intermixed_args`
-and :meth:`~ArgumentParser.parse_known_intermixed_args` methods
-support this parsing style.
-
-These parsers do not support all the argparse features, and will raise
-exceptions if unsupported features are used.  In particular, subparsers,
-and mutually exclusive groups that include both
-optionals and positionals are not supported.
-
-The following example shows the difference between
-:meth:`~ArgumentParser.parse_known_args` and
-:meth:`~ArgumentParser.parse_intermixed_args`: the former returns ``['2',
-'3']`` as unparsed arguments, while the latter collects all the positionals
-into ``rest``.  ::
-
-   >>> parser = argparse.ArgumentParser()
-   >>> parser.add_argument('--foo')
-   >>> parser.add_argument('cmd')
-   >>> parser.add_argument('rest', nargs='*', type=int)
-   >>> parser.parse_known_args('doit 1 --foo bar 2 3'.split())
-   (Namespace(cmd='doit', foo='bar', rest=[1]), ['2', '3'])
-   >>> parser.parse_intermixed_args('doit 1 --foo bar 2 3'.split())
-   Namespace(cmd='doit', foo='bar', rest=[1, 2, 3])
-
-:meth:`~ArgumentParser.parse_known_intermixed_args` returns a two item tuple
-containing the populated namespace and the list of remaining argument strings.
-:meth:`~ArgumentParser.parse_intermixed_args` raises an error if there are any
-remaining unparsed argument strings.
+   A number of Unix commands allow the user to intermix optional arguments with
+   positional arguments.  The :meth:`~ArgumentParser.parse_intermixed_args`
+   and :meth:`~ArgumentParser.parse_known_intermixed_args` methods
+   support this parsing style.
 
-.. versionadded:: 3.7
+   These parsers do not support all the :mod:`!argparse` features, and will raise
+   exceptions if unsupported features are used.  In particular, subparsers,
+   and mutually exclusive groups that include both
+   optionals and positionals are not supported.
 
-.. _upgrading-optparse-code:
-
-Upgrading optparse code
------------------------
+   The following example shows the difference between
+   :meth:`~ArgumentParser.parse_known_args` and
+   :meth:`~ArgumentParser.parse_intermixed_args`: the former returns ``['2',
+   '3']`` as unparsed arguments, while the latter collects all the positionals
+   into ``rest``.  ::
 
-Originally, the :mod:`argparse` module had attempted to maintain compatibility
-with :mod:`optparse`.  However, :mod:`optparse` was difficult to extend
-transparently, particularly with the changes required to support the new
-``nargs=`` specifiers and better usage messages.  When most everything in
-:mod:`optparse` had either been copy-pasted over or monkey-patched, it no
-longer seemed practical to try to maintain the backwards compatibility.
-
-The :mod:`argparse` module improves on the standard library :mod:`optparse`
-module in a number of ways including:
-
-* Handling positional arguments.
-* Supporting sub-commands.
-* Allowing alternative option prefixes like ``+`` and ``/``.
-* Handling zero-or-more and one-or-more style arguments.
-* Producing more informative usage messages.
-* Providing a much simpler interface for custom ``type`` and ``action``.
+      >>> parser = argparse.ArgumentParser()
+      >>> parser.add_argument('--foo')
+      >>> parser.add_argument('cmd')
+      >>> parser.add_argument('rest', nargs='*', type=int)
+      >>> parser.parse_known_args('doit 1 --foo bar 2 3'.split())
+      (Namespace(cmd='doit', foo='bar', rest=[1]), ['2', '3'])
+      >>> parser.parse_intermixed_args('doit 1 --foo bar 2 3'.split())
+      Namespace(cmd='doit', foo='bar', rest=[1, 2, 3])
 
-A partial upgrade path from :mod:`optparse` to :mod:`argparse`:
+   :meth:`~ArgumentParser.parse_known_intermixed_args` returns a two item tuple
+   containing the populated namespace and the list of remaining argument strings.
+   :meth:`~ArgumentParser.parse_intermixed_args` raises an error if there are any
+   remaining unparsed argument strings.
 
-* Replace all :meth:`optparse.OptionParser.add_option` calls with
-  :meth:`ArgumentParser.add_argument` calls.
+   .. versionadded:: 3.7
 
-* Replace ``(options, args) = parser.parse_args()`` with ``args =
-  parser.parse_args()`` and add additional :meth:`ArgumentParser.add_argument`
-  calls for the positional arguments. Keep in mind that what was previously
-  called ``options``, now in the :mod:`argparse` context is called ``args``.
 
-* Replace :meth:`optparse.OptionParser.disable_interspersed_args`
-  by using :meth:`~ArgumentParser.parse_intermixed_args` instead of
-  :meth:`~ArgumentParser.parse_args`.
+Registering custom types or actions
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* Replace callback actions and the ``callback_*`` keyword arguments with
-  ``type`` or ``action`` arguments.
+.. method:: ArgumentParser.register(registry_name, value, object)
 
-* Replace string names for ``type`` keyword arguments with the corresponding
-  type objects (e.g. int, float, complex, etc).
+   Sometimes it's desirable to use a custom string in error messages to provide
+   more user-friendly output. In these cases, :meth:`!register` can be used to
+   register custom actions or types with a parser and allow you to reference the
+   type by their registered name instead of their callable name.
 
-* Replace :class:`optparse.Values` with :class:`Namespace` and
-  :exc:`optparse.OptionError` and :exc:`optparse.OptionValueError` with
-  :exc:`ArgumentError`.
+   The :meth:`!register` method accepts three arguments - a *registry_name*,
+   specifying the internal registry where the object will be stored (e.g.,
+   ``action``, ``type``), *value*, which is the key under which the object will
+   be registered, and object, the callable to be registered.
 
-* Replace strings with implicit arguments such as ``%default`` or ``%prog`` with
-  the standard Python syntax to use dictionaries to format strings, that is,
-  ``%(default)s`` and ``%(prog)s``.
+   The following example shows how to register a custom type with a parser::
 
-* Replace the OptionParser constructor ``version`` argument with a call to
-  ``parser.add_argument('--version', action='version', version='<the version>')``.
+      >>> import argparse
+      >>> parser = argparse.ArgumentParser()
+      >>> parser.register('type', 'hexadecimal integer', lambda s: int(s, 16))
+      >>> parser.add_argument('--foo', type='hexadecimal integer')
+      _StoreAction(option_strings=['--foo'], dest='foo', nargs=None, const=None, default=None, type='hexadecimal integer', choices=None, required=False, help=None, metavar=None, deprecated=False)
+      >>> parser.parse_args(['--foo', '0xFA'])
+      Namespace(foo=250)
+      >>> parser.parse_args(['--foo', '1.2'])
+      usage: PROG [-h] [--foo FOO]
+      PROG: error: argument --foo: invalid 'hexadecimal integer' value: '1.2'
 
 Exceptions
 ----------
@@ -2354,3 +2158,12 @@ Exceptions
 .. exception:: ArgumentTypeError
 
    Raised when something goes wrong converting a command line string to a type.
+
+
+.. rubric:: Guides and Tutorials
+
+.. toctree::
+   :maxdepth: 1
+
+   ../howto/argparse.rst
+   ../howto/argparse-optparse.rst
diff --git a/Doc/library/array.rst b/Doc/library/array.rst
index cdf21db8779fe8..e0b1eb89cf6c05 100644
--- a/Doc/library/array.rst
+++ b/Doc/library/array.rst
@@ -1,5 +1,5 @@
-:mod:`array` --- Efficient arrays of numeric values
-===================================================
+:mod:`!array` --- Efficient arrays of numeric values
+====================================================
 
 .. module:: array
    :synopsis: Space efficient arrays of uniformly typed numeric values.
@@ -9,7 +9,7 @@
 --------------
 
 This module defines an object type which can compactly represent an array of
-basic values: characters, integers, floating point numbers.  Arrays are sequence
+basic values: characters, integers, floating-point numbers.  Arrays are sequence
 types and behave very much like lists, except that the type of objects stored in
 them is constrained.  The type is specified at object creation time by using a
 :dfn:`type code`, which is a single character.  The following type codes are
@@ -263,7 +263,7 @@ The string representation is guaranteed to be able to be converted back to an
 array with the same type and value using :func:`eval`, so long as the
 :class:`~array.array` class has been imported using ``from array import array``.
 Variables ``inf`` and ``nan`` must also be defined if it contains
-corresponding floating point values.
+corresponding floating-point values.
 Examples::
 
    array('l')
diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 02dc7c86082502..ce261abc2a347d 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -1,5 +1,5 @@
-:mod:`ast` --- Abstract Syntax Trees
-====================================
+:mod:`!ast` --- Abstract Syntax Trees
+=====================================
 
 .. module:: ast
    :synopsis: Abstract Syntax Tree classes and manipulation.
@@ -120,7 +120,8 @@ Node classes
 
    If a field that is optional in the grammar is omitted from the constructor,
    it defaults to ``None``. If a list field is omitted, it defaults to the empty
-   list. If any other field is omitted, a :exc:`DeprecationWarning` is raised
+   list. If a field of type :class:`!ast.expr_context` is omitted, it defaults to
+   :class:`Load() <ast.Load>`. If any other field is omitted, a :exc:`DeprecationWarning` is raised
    and the AST node will not have this field. In Python 3.15, this condition will
    raise an error.
 
@@ -172,9 +173,9 @@ Root nodes
    A Python module, as with :ref:`file input <file-input>`.
    Node type generated by :func:`ast.parse` in the default ``"exec"`` *mode*.
 
-   *body* is a :class:`list` of the module's :ref:`ast-statements`.
+   ``body`` is a :class:`list` of the module's :ref:`ast-statements`.
 
-   *type_ignores* is a :class:`list` of the module's type ignore comments;
+   ``type_ignores`` is a :class:`list` of the module's type ignore comments;
    see :func:`ast.parse` for more details.
 
    .. doctest::
@@ -193,7 +194,7 @@ Root nodes
    A single Python :ref:`expression input <expression-input>`.
    Node type generated by :func:`ast.parse` when *mode* is ``"eval"``.
 
-   *body* is a single node,
+   ``body`` is a single node,
    one of the :ref:`expression types <ast-expressions>`.
 
    .. doctest::
@@ -208,7 +209,7 @@ Root nodes
    A single :ref:`interactive input <interactive>`, like in :ref:`tut-interac`.
    Node type generated by :func:`ast.parse` when *mode* is ``"single"``.
 
-   *body* is a :class:`list` of :ref:`statement nodes <ast-statements>`.
+   ``body`` is a :class:`list` of :ref:`statement nodes <ast-statements>`.
 
    .. doctest::
 
@@ -237,9 +238,9 @@ Root nodes
            # type: (int, int) -> int
            return a + b
 
-   *argtypes* is a :class:`list` of :ref:`expression nodes <ast-expressions>`.
+   ``argtypes`` is a :class:`list` of :ref:`expression nodes <ast-expressions>`.
 
-   *returns* is a single :ref:`expression node <ast-expressions>`.
+   ``returns`` is a single :ref:`expression node <ast-expressions>`.
 
    .. doctest::
 
@@ -596,8 +597,7 @@ Expressions
    * ``keywords`` holds a list of :class:`.keyword` objects representing
      arguments passed by keyword.
 
-   When creating a ``Call`` node, ``args`` and ``keywords`` are required, but
-   they can be empty lists.
+   The ``args`` and ``keywords`` arguments are optional and default to empty lists.
 
    .. doctest::
 
@@ -889,11 +889,15 @@ Statements
 .. class:: AnnAssign(target, annotation, value, simple)
 
    An assignment with a type annotation. ``target`` is a single node and can
-   be a :class:`Name`, a :class:`Attribute` or a :class:`Subscript`.
+   be a :class:`Name`, an :class:`Attribute` or a :class:`Subscript`.
    ``annotation`` is the annotation, such as a :class:`Constant` or :class:`Name`
-   node. ``value`` is a single optional node. ``simple`` is a boolean integer
-   set to True for a :class:`Name` node in ``target`` that do not appear in
-   between parenthesis and are hence pure names and not expressions.
+   node. ``value`` is a single optional node.
+
+   ``simple`` is always either 0 (indicating a "complex" target) or 1
+   (indicating a "simple" target). A "simple" target consists solely of a
+   :class:`Name` node that does not appear between parentheses; all other
+   targets are considered complex. Only simple targets appear in
+   the :attr:`~object.__annotations__` dictionary of modules and classes.
 
    .. doctest::
 
@@ -1762,9 +1766,9 @@ aliases.
 
 .. class:: TypeVar(name, bound, default_value)
 
-   A :class:`typing.TypeVar`. *name* is the name of the type variable.
-   *bound* is the bound or constraints, if any. If *bound* is a :class:`Tuple`,
-   it represents constraints; otherwise it represents the bound. *default_value*
+   A :class:`typing.TypeVar`. ``name`` is the name of the type variable.
+   ``bound`` is the bound or constraints, if any. If ``bound`` is a :class:`Tuple`,
+   it represents constraints; otherwise it represents the bound. ``default_value``
    is the default value; if the :class:`!TypeVar` has no default, this
    attribute will be set to ``None``.
 
@@ -1792,13 +1796,13 @@ aliases.
 
 .. class:: ParamSpec(name, default_value)
 
-   A :class:`typing.ParamSpec`. *name* is the name of the parameter specification.
-   *default_value* is the default value; if the :class:`!ParamSpec` has no default,
+   A :class:`typing.ParamSpec`. ``name`` is the name of the parameter specification.
+   ``default_value`` is the default value; if the :class:`!ParamSpec` has no default,
    this attribute will be set to ``None``.
 
    .. doctest::
 
-        >>> print(ast.dump(ast.parse("type Alias[**P = (int, str)] = Callable[P, int]"), indent=4))
+        >>> print(ast.dump(ast.parse("type Alias[**P = [int, str]] = Callable[P, int]"), indent=4))
         Module(
             body=[
                 TypeAlias(
@@ -1806,7 +1810,7 @@ aliases.
                     type_params=[
                         ParamSpec(
                             name='P',
-                            default_value=Tuple(
+                            default_value=List(
                                 elts=[
                                     Name(id='int', ctx=Load()),
                                     Name(id='str', ctx=Load())],
@@ -1827,8 +1831,8 @@ aliases.
 
 .. class:: TypeVarTuple(name, default_value)
 
-   A :class:`typing.TypeVarTuple`. *name* is the name of the type variable tuple.
-   *default_value* is the default value; if the :class:`!TypeVarTuple` has no
+   A :class:`typing.TypeVarTuple`. ``name`` is the name of the type variable tuple.
+   ``default_value`` is the default value; if the :class:`!TypeVarTuple` has no
    default, this attribute will be set to ``None``.
 
    .. doctest::
@@ -1977,7 +1981,7 @@ Function and class definitions
            YieldFrom(value)
 
    A ``yield`` or ``yield from`` expression. Because these are expressions, they
-   must be wrapped in a :class:`Expr` node if the value sent back is not used.
+   must be wrapped in an :class:`Expr` node if the value sent back is not used.
 
    .. doctest::
 
@@ -2029,8 +2033,7 @@ Function and class definitions
    * ``name`` is a raw string for the class name
    * ``bases`` is a list of nodes for explicitly specified base classes.
    * ``keywords`` is a list of :class:`.keyword` nodes, principally for 'metaclass'.
-     Other keywords will be passed to the metaclass, as per `PEP-3115
-     <https://peps.python.org/pep-3115/>`_.
+     Other keywords will be passed to the metaclass, as per :pep:`3115`.
    * ``body`` is a list of nodes representing the code within the class
      definition.
    * ``decorator_list`` is a list of nodes, as in :class:`FunctionDef`.
@@ -2130,7 +2133,7 @@ and classes for traversing abstract syntax trees:
    If ``type_comments=True`` is given, the parser is modified to check
    and return type comments as specified by :pep:`484` and :pep:`526`.
    This is equivalent to adding :data:`ast.PyCF_TYPE_COMMENTS` to the
-   flags passed to :func:`compile()`.  This will report syntax errors
+   flags passed to :func:`compile`.  This will report syntax errors
    for misplaced type comments.  Without this flag, type comments will
    be ignored, and the ``type_comment`` field on selected AST nodes
    will always be ``None``.  In addition, the locations of ``# type:
diff --git a/Doc/library/asynchat.rst b/Doc/library/asynchat.rst
new file mode 100644
index 00000000000000..5e5c3a99fe66f1
--- /dev/null
+++ b/Doc/library/asynchat.rst
@@ -0,0 +1,17 @@
+:mod:`!asynchat` --- Asynchronous socket command/response handler
+=================================================================
+
+.. module:: asynchat
+   :synopsis: Removed in 3.12.
+   :deprecated:
+
+.. deprecated-removed:: 3.6 3.12
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.12 <whatsnew312-removed>` after
+being deprecated in Python 3.6.  The removal was decided in :pep:`594`.
+
+Applications should use the :mod:`asyncio` module instead.
+
+The last version of Python that provided the :mod:`!asynchat` module was
+`Python 3.11 <https://docs.python.org/3.11/library/asynchat.html>`_.
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index d6ed817b13676f..8027d3525e5999 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -126,7 +126,7 @@ Running and stopping the loop
 
    Run the event loop until :meth:`stop` is called.
 
-   If :meth:`stop` is called before :meth:`run_forever()` is called,
+   If :meth:`stop` is called before :meth:`run_forever` is called,
    the loop will poll the I/O selector once with a timeout of zero,
    run all callbacks scheduled in response to I/O events (and
    those that were already scheduled), and then exit.
@@ -165,7 +165,7 @@ Running and stopping the loop
 .. coroutinemethod:: loop.shutdown_asyncgens()
 
    Schedule all currently open :term:`asynchronous generator` objects to
-   close with an :meth:`~agen.aclose()` call.  After calling this method,
+   close with an :meth:`~agen.aclose` call.  After calling this method,
    the event loop will issue a warning if a new asynchronous generator
    is iterated. This should be used to reliably finalize all scheduled
    asynchronous generators.
@@ -236,6 +236,9 @@ Scheduling callbacks
    another thread, this function *must* be used, since :meth:`call_soon` is not
    thread-safe.
 
+   This function is safe to be called from a reentrant context or signal handler,
+   however, it is not safe or fruitful to use the returned handle in such contexts.
+
    Raises :exc:`RuntimeError` if called on a loop that's been closed.
    This can happen on a secondary thread when the main application is
    shutting down.
@@ -796,7 +799,7 @@ Creating network servers
    :class:`str`, :class:`bytes`, and :class:`~pathlib.Path` paths
    are supported.
 
-   If *cleanup_socket* is True then the Unix socket will automatically
+   If *cleanup_socket* is true then the Unix socket will automatically
    be removed from the filesystem when the server is closed, unless the
    socket has been replaced after the server has been created.
 
@@ -957,6 +960,9 @@ Watching file descriptors
    invoke *callback* with the specified arguments once *fd* is available for
    reading.
 
+   Any preexisting callback registered for *fd* is cancelled and replaced by
+   *callback*.
+
 .. method:: loop.remove_reader(fd)
 
    Stop monitoring the *fd* file descriptor for read availability. Returns
@@ -968,6 +974,9 @@ Watching file descriptors
    invoke *callback* with the specified arguments once *fd* is available for
    writing.
 
+   Any preexisting callback registered for *fd* is cancelled and replaced by
+   *callback*.
+
    Use :func:`functools.partial` :ref:`to pass keyword arguments
    <asyncio-pass-keywords>` to *callback*.
 
@@ -1155,6 +1164,14 @@ DNS
 
    Asynchronous version of :meth:`socket.getnameinfo`.
 
+.. note::
+   Both *getaddrinfo* and *getnameinfo* internally utilize their synchronous
+   versions through the loop's default thread pool executor.
+   When this executor is saturated, these methods may experience delays,
+   which higher-level networking libraries may report as increased timeouts.
+   To mitigate this, consider using a custom executor for other user tasks,
+   or setting a default executor with a larger number of workers.
+
 .. versionchanged:: 3.7
    Both *getaddrinfo* and *getnameinfo* methods were always documented
    to return a coroutine, but prior to Python 3.7 they were, in fact,
@@ -1254,6 +1271,9 @@ Executing code in thread or process pools
 
    The *executor* argument should be an :class:`concurrent.futures.Executor`
    instance. The default executor is used if *executor* is ``None``.
+   The default executor can be set by :meth:`loop.set_default_executor`,
+   otherwise, a :class:`concurrent.futures.ThreadPoolExecutor` will be
+   lazy-initialized and used by :func:`run_in_executor` if needed.
 
    Example::
 
@@ -1391,7 +1411,7 @@ Allows customizing how exceptions are handled in the event loop.
 
        This method should not be overloaded in subclassed
        event loops.  For custom exception handling, use
-       the :meth:`set_exception_handler()` method.
+       the :meth:`set_exception_handler` method.
 
 Enabling debug mode
 ^^^^^^^^^^^^^^^^^^^
@@ -1474,7 +1494,7 @@ async/await code consider using the high-level
    * *stdin* can be any of these:
 
      * a file-like object
-     * an existing file descriptor (a positive integer), for example those created with :meth:`os.pipe()`
+     * an existing file descriptor (a positive integer), for example those created with :meth:`os.pipe`
      * the :const:`subprocess.PIPE` constant (default) which will create a new
        pipe and connect it,
      * the value ``None`` which will make the subprocess inherit the file
@@ -1780,7 +1800,7 @@ By default asyncio is configured to use :class:`EventLoop`.
    .. seealso::
 
       `MSDN documentation on I/O Completion Ports
-      <https://docs.microsoft.com/en-ca/windows/desktop/FileIO/i-o-completion-ports>`_.
+      <https://learn.microsoft.com/windows/win32/fileio/i-o-completion-ports>`_.
 
 .. class:: EventLoop
 
diff --git a/Doc/library/asyncio-future.rst b/Doc/library/asyncio-future.rst
index 893ae5518f757d..9dce0731411940 100644
--- a/Doc/library/asyncio-future.rst
+++ b/Doc/library/asyncio-future.rst
@@ -120,20 +120,20 @@ Future Object
       a :exc:`CancelledError` exception.
 
       If the Future's result isn't yet available, this method raises
-      a :exc:`InvalidStateError` exception.
+      an :exc:`InvalidStateError` exception.
 
    .. method:: set_result(result)
 
       Mark the Future as *done* and set its result.
 
-      Raises a :exc:`InvalidStateError` error if the Future is
+      Raises an :exc:`InvalidStateError` error if the Future is
       already *done*.
 
    .. method:: set_exception(exception)
 
       Mark the Future as *done* and set an exception.
 
-      Raises a :exc:`InvalidStateError` error if the Future is
+      Raises an :exc:`InvalidStateError` error if the Future is
       already *done*.
 
    .. method:: done()
diff --git a/Doc/library/asyncio-llapi-index.rst b/Doc/library/asyncio-llapi-index.rst
index 67136ba69ec875..3e21054aa4fe9e 100644
--- a/Doc/library/asyncio-llapi-index.rst
+++ b/Doc/library/asyncio-llapi-index.rst
@@ -56,10 +56,10 @@ See also the main documentation section about the
     * - :meth:`loop.close`
       - Close the event loop.
 
-    * - :meth:`loop.is_running()`
+    * - :meth:`loop.is_running`
       - Return ``True`` if the event loop is running.
 
-    * - :meth:`loop.is_closed()`
+    * - :meth:`loop.is_closed`
       - Return ``True`` if the event loop is closed.
 
     * - ``await`` :meth:`loop.shutdown_asyncgens`
diff --git a/Doc/library/asyncio-queue.rst b/Doc/library/asyncio-queue.rst
index 9b579cc1d5fdfe..066edd424d150e 100644
--- a/Doc/library/asyncio-queue.rst
+++ b/Doc/library/asyncio-queue.rst
@@ -55,7 +55,7 @@ Queue
       Return ``True`` if there are :attr:`maxsize` items in the queue.
 
       If the queue was initialized with ``maxsize=0`` (the default),
-      then :meth:`full()` never returns ``True``.
+      then :meth:`full` never returns ``True``.
 
    .. coroutinemethod:: get()
 
@@ -115,11 +115,11 @@ Queue
 
    .. method:: task_done()
 
-      Indicate that a formerly enqueued task is complete.
+      Indicate that a formerly enqueued work item is complete.
 
       Used by queue consumers. For each :meth:`~Queue.get` used to
-      fetch a task, a subsequent call to :meth:`task_done` tells the
-      queue that the processing on the task is complete.
+      fetch a work item, a subsequent call to :meth:`task_done` tells the
+      queue that the processing on the work item is complete.
 
       If a :meth:`join` is currently blocking, it will resume when all
       items have been processed (meaning that a :meth:`task_done`
diff --git a/Doc/library/asyncio-runner.rst b/Doc/library/asyncio-runner.rst
index ec170dfde9e9aa..8312e55126a7c5 100644
--- a/Doc/library/asyncio-runner.rst
+++ b/Doc/library/asyncio-runner.rst
@@ -91,7 +91,7 @@ Runner context manager
    current one. By default :func:`asyncio.new_event_loop` is used and set as
    current event loop with :func:`asyncio.set_event_loop` if *loop_factory* is ``None``.
 
-   Basically, :func:`asyncio.run()` example can be rewritten with the runner usage::
+   Basically, :func:`asyncio.run` example can be rewritten with the runner usage::
 
         async def main():
             await asyncio.sleep(1)
diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
index 3fdc79b3c6896c..48f2890c5eef8c 100644
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -92,7 +92,8 @@ and work with streams:
                           family=socket.AF_UNSPEC, \
                           flags=socket.AI_PASSIVE, sock=None, \
                           backlog=100, ssl=None, reuse_address=None, \
-                          reuse_port=None, ssl_handshake_timeout=None, \
+                          reuse_port=None, keep_alive=None, \
+                          ssl_handshake_timeout=None, \
                           ssl_shutdown_timeout=None, start_serving=True)
 
    Start a socket server.
@@ -128,6 +129,9 @@ and work with streams:
    .. versionchanged:: 3.11
       Added the *ssl_shutdown_timeout* parameter.
 
+   .. versionchanged:: 3.13
+      Added the *keep_alive* parameter.
+
 
 .. rubric:: Unix Sockets
 
diff --git a/Doc/library/asyncio-sync.rst b/Doc/library/asyncio-sync.rst
index 3cf8e2737e85dc..77c2e97da11990 100644
--- a/Doc/library/asyncio-sync.rst
+++ b/Doc/library/asyncio-sync.rst
@@ -259,8 +259,8 @@ Condition
 
       Note that a task *may* return from this call spuriously,
       which is why the caller should always re-check the state
-      and be prepared to :meth:`wait` again. For this reason, you may
-      prefer to use :meth:`wait_for` instead.
+      and be prepared to :meth:`~Condition.wait` again. For this reason, you may
+      prefer to use :meth:`~Condition.wait_for` instead.
 
    .. coroutinemethod:: wait_for(predicate)
 
@@ -268,7 +268,7 @@ Condition
 
       The predicate must be a callable which result will be
       interpreted as a boolean value.  The method will repeatedly
-      :meth:`wait` until the predicate evaluates to *true*. The final value is the
+      :meth:`~Condition.wait` until the predicate evaluates to *true*. The final value is the
       return value.
 
 
@@ -434,7 +434,7 @@ Barrier
    .. coroutinemethod:: abort()
 
       Put the barrier into a broken state.  This causes any active or future
-      calls to :meth:`wait` to fail with the :class:`BrokenBarrierError`.
+      calls to :meth:`~Barrier.wait` to fail with the :class:`BrokenBarrierError`.
       Use this for example if one of the tasks needs to abort, to avoid infinite
       waiting tasks.
 
diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index 188649a2968df8..f27e858cf420f4 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -158,7 +158,7 @@ other coroutines::
         # Nothing happens if we just call "nested()".
         # A coroutine object is created but not awaited,
         # so it *won't run at all*.
-        nested()
+        nested()  # will raise a "RuntimeWarning".
 
         # Let's do it differently now and await it:
         print(await nested())  # will print "42".
@@ -414,6 +414,53 @@ reported by :meth:`asyncio.Task.cancelling`.
    Improved handling of simultaneous internal and external cancellations
    and correct preservation of cancellation counts.
 
+Terminating a Task Group
+------------------------
+
+While terminating a task group is not natively supported by the standard
+library, termination can be achieved by adding an exception-raising task
+to the task group and ignoring the raised exception:
+
+.. code-block:: python
+
+   import asyncio
+   from asyncio import TaskGroup
+
+   class TerminateTaskGroup(Exception):
+       """Exception raised to terminate a task group."""
+
+   async def force_terminate_task_group():
+       """Used to force termination of a task group."""
+       raise TerminateTaskGroup()
+
+   async def job(task_id, sleep_time):
+       print(f'Task {task_id}: start')
+       await asyncio.sleep(sleep_time)
+       print(f'Task {task_id}: done')
+
+   async def main():
+       try:
+           async with TaskGroup() as group:
+               # spawn some tasks
+               group.create_task(job(1, 0.5))
+               group.create_task(job(2, 1.5))
+               # sleep for 1 second
+               await asyncio.sleep(1)
+               # add an exception-raising task to force the group to terminate
+               group.create_task(force_terminate_task_group())
+       except* TerminateTaskGroup:
+           pass
+
+   asyncio.run(main())
+
+Expected output:
+
+.. code-block:: text
+
+   Task 1: start
+   Task 2: start
+   Task 1: done
+
 Sleeping
 ========
 
@@ -538,7 +585,7 @@ Running Tasks Concurrently
       #     [2, 6, 24]
 
    .. note::
-      If *return_exceptions* is False, cancelling gather() after it
+      If *return_exceptions* is false, cancelling gather() after it
       has been marked done won't cancel any submitted awaitables.
       For instance, gather can be marked done after propagating an
       exception to the caller, therefore, calling ``gather.cancel()``
@@ -1170,7 +1217,7 @@ Task Object
       a :exc:`CancelledError` exception.
 
       If the Task's result isn't yet available, this method raises
-      a :exc:`InvalidStateError` exception.
+      an :exc:`InvalidStateError` exception.
 
    .. method:: exception()
 
diff --git a/Doc/library/asyncio.rst b/Doc/library/asyncio.rst
index 5f33c6813e74c0..5f83b3a2658da4 100644
--- a/Doc/library/asyncio.rst
+++ b/Doc/library/asyncio.rst
@@ -1,5 +1,5 @@
-:mod:`asyncio` --- Asynchronous I/O
-===================================
+:mod:`!asyncio` --- Asynchronous I/O
+====================================
 
 .. module:: asyncio
    :synopsis: Asynchronous I/O.
@@ -56,9 +56,13 @@ Additionally, there are **low-level** APIs for
 * :ref:`bridge <asyncio-futures>` callback-based libraries and code
   with async/await syntax.
 
+.. include:: ../includes/wasm-notavail.rst
+
 .. _asyncio-cli:
 
-You can experiment with an ``asyncio`` concurrent context in the REPL:
+.. rubric:: asyncio REPL
+
+You can experiment with an ``asyncio`` concurrent context in the :term:`REPL`:
 
 .. code-block:: pycon
 
@@ -70,7 +74,14 @@ You can experiment with an ``asyncio`` concurrent context in the REPL:
    >>> await asyncio.sleep(10, result='hello')
    'hello'
 
-.. include:: ../includes/wasm-notavail.rst
+.. audit-event:: cpython.run_stdin "" ""
+
+.. versionchanged:: 3.12.5 (also 3.11.10, 3.10.15, 3.9.20, and 3.8.20)
+   Emits audit events.
+
+.. versionchanged:: 3.13
+   Uses PyREPL if possible, in which case :envvar:`PYTHONSTARTUP` is
+   also executed. Emits audit events.
 
 .. We use the "rubric" directive here to avoid creating
    the "Reference" subsection in the TOC.
diff --git a/Doc/library/asyncore.rst b/Doc/library/asyncore.rst
new file mode 100644
index 00000000000000..22c9881c3cca36
--- /dev/null
+++ b/Doc/library/asyncore.rst
@@ -0,0 +1,17 @@
+:mod:`!asyncore` --- Asynchronous socket handler
+================================================
+
+.. module:: asyncore
+   :synopsis: Removed in 3.12.
+   :deprecated:
+
+.. deprecated-removed:: 3.6 3.12
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.12 <whatsnew312-removed>` after
+being deprecated in Python 3.6.  The removal was decided in :pep:`594`.
+
+Applications should use the :mod:`asyncio` module instead.
+
+The last version of Python that provided the :mod:`!asyncore` module was
+`Python 3.11 <https://docs.python.org/3.11/library/asyncore.html>`_.
diff --git a/Doc/library/atexit.rst b/Doc/library/atexit.rst
index 43a8bd2d7cd133..02d2f0807df8f6 100644
--- a/Doc/library/atexit.rst
+++ b/Doc/library/atexit.rst
@@ -1,5 +1,5 @@
-:mod:`atexit` --- Exit handlers
-===============================
+:mod:`!atexit` --- Exit handlers
+================================
 
 .. module:: atexit
    :synopsis: Register and execute cleanup functions.
diff --git a/Doc/library/audioop.rst b/Doc/library/audioop.rst
new file mode 100644
index 00000000000000..3bc580b0bd3433
--- /dev/null
+++ b/Doc/library/audioop.rst
@@ -0,0 +1,15 @@
+:mod:`!audioop` --- Manipulate raw audio data
+=============================================
+
+.. module:: audioop
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!audioop` module was
+`Python 3.12 <https://docs.python.org/3.12/library/audioop.html>`_.
diff --git a/Doc/library/base64.rst b/Doc/library/base64.rst
index e596893358f3fb..834ab2536e6c14 100644
--- a/Doc/library/base64.rst
+++ b/Doc/library/base64.rst
@@ -1,5 +1,5 @@
-:mod:`base64` --- Base16, Base32, Base64, Base85 Data Encodings
-===============================================================
+:mod:`!base64` --- Base16, Base32, Base64, Base85 Data Encodings
+================================================================
 
 .. module:: base64
    :synopsis: RFC 4648: Base16, Base32, Base64 Data Encodings;
@@ -193,7 +193,7 @@ The modern interface provides:
 
    *wrapcol* controls whether the output should have newline (``b'\n'``)
    characters added to it. If this is non-zero, each output line will be
-   at most this many characters long.
+   at most this many characters long, excluding the trailing newline.
 
    *pad* controls whether the input is padded to a multiple of 4
    before encoding. Note that the ``btoa`` implementation always pads.
diff --git a/Doc/library/bdb.rst b/Doc/library/bdb.rst
index 504fbd0464515b..85df7914a9a014 100644
--- a/Doc/library/bdb.rst
+++ b/Doc/library/bdb.rst
@@ -1,5 +1,5 @@
-:mod:`bdb` --- Debugger framework
-=================================
+:mod:`!bdb` --- Debugger framework
+==================================
 
 .. module:: bdb
    :synopsis: Debugger framework.
@@ -86,7 +86,7 @@ The :mod:`bdb` module also defines two classes:
 
    .. attribute:: temporary
 
-      True if a :class:`Breakpoint` at (file, line) is temporary.
+      ``True`` if a :class:`Breakpoint` at (file, line) is temporary.
 
    .. attribute:: cond
 
@@ -99,7 +99,7 @@ The :mod:`bdb` module also defines two classes:
 
    .. attribute:: enabled
 
-      True if :class:`Breakpoint` is enabled.
+      ``True`` if :class:`Breakpoint` is enabled.
 
    .. attribute:: bpbynumber
 
@@ -215,22 +215,22 @@ The :mod:`bdb` module also defines two classes:
 
    .. method:: is_skipped_line(module_name)
 
-      Return True if *module_name* matches any skip pattern.
+      Return ``True`` if *module_name* matches any skip pattern.
 
    .. method:: stop_here(frame)
 
-      Return True if *frame* is below the starting frame in the stack.
+      Return ``True`` if *frame* is below the starting frame in the stack.
 
    .. method:: break_here(frame)
 
-      Return True if there is an effective breakpoint for this line.
+      Return ``True`` if there is an effective breakpoint for this line.
 
       Check whether a line or function breakpoint exists and is in effect.  Delete temporary
       breakpoints based on information from :func:`effective`.
 
    .. method:: break_anywhere(frame)
 
-      Return True if any breakpoint exists for *frame*'s filename.
+      Return ``True`` if any breakpoint exists for *frame*'s filename.
 
    Derived classes should override these methods to gain control over debugger
    operation.
@@ -348,7 +348,7 @@ The :mod:`bdb` module also defines two classes:
 
    .. method:: get_break(filename, lineno)
 
-      Return True if there is a breakpoint for *lineno* in *filename*.
+      Return ``True`` if there is a breakpoint for *lineno* in *filename*.
 
    .. method:: get_breaks(filename, lineno)
 
@@ -412,7 +412,7 @@ Finally, the module defines the following functions:
 
 .. function:: checkfuncname(b, frame)
 
-   Return True if we should break here, depending on the way the
+   Return ``True`` if we should break here, depending on the way the
    :class:`Breakpoint` *b* was set.
 
    If it was set via line number, it checks if
@@ -431,14 +431,14 @@ Finally, the module defines the following functions:
    :attr:`bplist <bdb.Breakpoint.bplist>` for the
    (:attr:`file <bdb.Breakpoint.file>`, :attr:`line <bdb.Breakpoint.line>`)
    (which must exist) that is :attr:`enabled <bdb.Breakpoint.enabled>`, for
-   which :func:`checkfuncname` is True, and that has neither a False
+   which :func:`checkfuncname` is true, and that has neither a false
    :attr:`condition <bdb.Breakpoint.cond>` nor positive
    :attr:`ignore <bdb.Breakpoint.ignore>` count.  The *flag*, meaning that a
-   temporary breakpoint should be deleted, is False only when the
+   temporary breakpoint should be deleted, is ``False`` only when the
    :attr:`cond <bdb.Breakpoint.cond>` cannot be evaluated (in which case,
    :attr:`ignore <bdb.Breakpoint.ignore>` count is ignored).
 
-   If no such entry exists, then (None, None) is returned.
+   If no such entry exists, then ``(None, None)`` is returned.
 
 
 .. function:: set_trace()
diff --git a/Doc/library/binascii.rst b/Doc/library/binascii.rst
index 39fabb59bb1984..1bab785684bbab 100644
--- a/Doc/library/binascii.rst
+++ b/Doc/library/binascii.rst
@@ -1,5 +1,5 @@
-:mod:`binascii` --- Convert between binary and ASCII
-====================================================
+:mod:`!binascii` --- Convert between binary and ASCII
+=====================================================
 
 .. module:: binascii
    :synopsis: Tools for converting between binary and various ASCII-encoded binary
diff --git a/Doc/library/bisect.rst b/Doc/library/bisect.rst
index 31c79b91061591..78da563397b625 100644
--- a/Doc/library/bisect.rst
+++ b/Doc/library/bisect.rst
@@ -1,5 +1,5 @@
-:mod:`bisect` --- Array bisection algorithm
-===========================================
+:mod:`!bisect` --- Array bisection algorithm
+============================================
 
 .. module:: bisect
    :synopsis: Array bisection algorithms for binary searching.
diff --git a/Doc/library/builtins.rst b/Doc/library/builtins.rst
index 7e4f8fe0531567..c4979db52d2aed 100644
--- a/Doc/library/builtins.rst
+++ b/Doc/library/builtins.rst
@@ -1,5 +1,5 @@
-:mod:`builtins` --- Built-in objects
-====================================
+:mod:`!builtins` --- Built-in objects
+=====================================
 
 .. module:: builtins
    :synopsis: The module that provides the built-in namespace.
@@ -7,10 +7,7 @@
 --------------
 
 This module provides direct access to all 'built-in' identifiers of Python; for
-example, ``builtins.open`` is the full name for the built-in function
-:func:`open`.  See :ref:`built-in-funcs` and :ref:`built-in-consts` for
-documentation.
-
+example, ``builtins.open`` is the full name for the built-in function :func:`open`.
 
 This module is not normally accessed explicitly by most applications, but can be
 useful in modules that provide objects with the same name as a built-in value,
@@ -40,3 +37,10 @@ available as part of their globals.  The value of ``__builtins__`` is normally
 either this module or the value of this module's :attr:`~object.__dict__` attribute.
 Since this is an implementation detail, it may not be used by alternate
 implementations of Python.
+
+.. seealso::
+
+   * :ref:`built-in-consts`
+   * :ref:`bltin-exceptions`
+   * :ref:`built-in-funcs`
+   * :ref:`bltin-types`
diff --git a/Doc/library/bz2.rst b/Doc/library/bz2.rst
index eaf0a096455fad..ebe2e43febaefa 100644
--- a/Doc/library/bz2.rst
+++ b/Doc/library/bz2.rst
@@ -1,5 +1,5 @@
-:mod:`bz2` --- Support for :program:`bzip2` compression
-=======================================================
+:mod:`!bz2` --- Support for :program:`bzip2` compression
+========================================================
 
 .. module:: bz2
    :synopsis: Interfaces for bzip2 compression and decompression.
diff --git a/Doc/library/calendar.rst b/Doc/library/calendar.rst
index e699a7284ac802..086bfcf2e3a909 100644
--- a/Doc/library/calendar.rst
+++ b/Doc/library/calendar.rst
@@ -1,5 +1,5 @@
-:mod:`calendar` --- General calendar-related functions
-======================================================
+:mod:`!calendar` --- General calendar-related functions
+=======================================================
 
 .. module:: calendar
    :synopsis: Functions for working with calendars, including some emulation
@@ -38,13 +38,33 @@ interpreted as prescribed by the ISO 8601 standard.  Year 0 is 1 BC, year -1 is
    itself. This is the job of subclasses.
 
 
-   :class:`Calendar` instances have the following methods:
+   :class:`Calendar` instances have the following methods and attributes:
+
+   .. attribute:: firstweekday
+
+      The first weekday as an integer (0--6).
+
+      This property can also be set and read using
+      :meth:`~Calendar.setfirstweekday` and
+      :meth:`~Calendar.getfirstweekday` respectively.
+
+   .. method:: getfirstweekday()
+
+      Return an :class:`int` for the current first weekday (0--6).
+
+      Identical to reading the :attr:`~Calendar.firstweekday` property.
+
+   .. method:: setfirstweekday(firstweekday)
+
+      Set the first weekday to *firstweekday*, passed as an :class:`int` (0--6)
+
+      Identical to setting the :attr:`~Calendar.firstweekday` property.
 
    .. method:: iterweekdays()
 
       Return an iterator for the week day numbers that will be used for one
       week.  The first value from the iterator will be the same as the value of
-      the :attr:`firstweekday` property.
+      the :attr:`~Calendar.firstweekday` property.
 
 
    .. method:: itermonthdates(year, month)
@@ -138,6 +158,33 @@ interpreted as prescribed by the ISO 8601 standard.  Year 0 is 1 BC, year -1 is
 
    :class:`TextCalendar` instances have the following methods:
 
+
+   .. method:: formatday(theday, weekday, width)
+
+      Return a string representing a single day formatted with the given *width*.
+      If *theday* is ``0``, return a string of spaces of
+      the specified width, representing an empty day. The *weekday* parameter
+      is unused.
+
+   .. method:: formatweek(theweek, w=0)
+
+      Return a single week in a string with no newline. If *w* is provided, it
+      specifies the width of the date columns, which are centered. Depends
+      on the first weekday as specified in the constructor or set by the
+      :meth:`setfirstweekday` method.
+
+   .. method:: formatweekday(weekday, width)
+
+      Return a string representing the name of a single weekday formatted to
+      the specified *width*. The *weekday* parameter is an integer representing
+      the day of the week, where ``0`` is Monday and ``6`` is Sunday.
+
+   .. method:: formatweekheader(width)
+
+      Return a string containing the header row of weekday names, formatted
+      with the given *width* for each column. The names depend on the locale
+      settings and are padded to the specified width.
+
    .. method:: formatmonth(theyear, themonth, w=0, l=0)
 
       Return a month's calendar in a multi-line string. If *w* is provided, it
@@ -146,6 +193,12 @@ interpreted as prescribed by the ISO 8601 standard.  Year 0 is 1 BC, year -1 is
       on the first weekday as specified in the constructor or set by the
       :meth:`setfirstweekday` method.
 
+   .. method:: formatmonthname(theyear, themonth, width=0, withyear=True)
+
+      Return a string representing the month's name centered within the
+      specified *width*. If *withyear* is ``True``, include the year in the
+      output. The *theyear* and *themonth* parameters specify the year
+      and month for the name to be formatted respectively.
 
    .. method:: prmonth(theyear, themonth, w=0, l=0)
 
@@ -393,13 +446,22 @@ The :mod:`calendar` module exports the following data attributes:
 
 .. data:: day_name
 
-   An array that represents the days of the week in the current locale.
+   A sequence that represents the days of the week in the current locale,
+   where Monday is day number 0.
+
+       >>> import calendar
+       >>> list(calendar.day_name)
+       ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
 
 
 .. data:: day_abbr
 
-   An array that represents the abbreviated days of the week in the current locale.
+   A sequence that represents the abbreviated days of the week in the current locale,
+   where Mon is day number 0.
 
+       >>> import calendar
+       >>> list(calendar.day_abbr)
+       ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
 
 .. data:: MONDAY
           TUESDAY
@@ -426,17 +488,24 @@ The :mod:`calendar` module exports the following data attributes:
 
 .. data:: month_name
 
-   An array that represents the months of the year in the current locale.  This
+   A sequence that represents the months of the year in the current locale.  This
    follows normal convention of January being month number 1, so it has a length of
-   13 and  ``month_name[0]`` is the empty string.
+   13 and ``month_name[0]`` is the empty string.
+
+       >>> import calendar
+       >>> list(calendar.month_name)
+       ['', 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
 
 
 .. data:: month_abbr
 
-   An array that represents the abbreviated months of the year in the current
+   A sequence that represents the abbreviated months of the year in the current
    locale.  This follows normal convention of January being month number 1, so it
    has a length of 13 and  ``month_abbr[0]`` is the empty string.
 
+       >>> import calendar
+       >>> list(calendar.month_abbr)
+       ['', 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
 
 .. data:: JANUARY
           FEBRUARY
diff --git a/Doc/library/cgi.rst b/Doc/library/cgi.rst
new file mode 100644
index 00000000000000..f9108fa954a906
--- /dev/null
+++ b/Doc/library/cgi.rst
@@ -0,0 +1,19 @@
+:mod:`!cgi` --- Common Gateway Interface support
+================================================
+
+.. module:: cgi
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+A fork of the module on PyPI can be used instead: :pypi:`legacy-cgi`.
+This is a copy of the cgi module, no longer maintained or supported by the core
+Python team.
+
+The last version of Python that provided the :mod:`!cgi` module was
+`Python 3.12 <https://docs.python.org/3.12/library/cgi.html>`_.
diff --git a/Doc/library/cgitb.rst b/Doc/library/cgitb.rst
new file mode 100644
index 00000000000000..fc646aa4c48acd
--- /dev/null
+++ b/Doc/library/cgitb.rst
@@ -0,0 +1,19 @@
+:mod:`!cgitb` --- Traceback manager for CGI scripts
+===================================================
+
+.. module:: cgitb
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+A fork of the module on PyPI can now be used instead: :pypi:`legacy-cgi`.
+This is a copy of the cgi module, no longer maintained or supported by the core
+Python team.
+
+The last version of Python that provided the :mod:`!cgitb` module was
+`Python 3.12 <https://docs.python.org/3.12/library/cgitb.html>`_.
diff --git a/Doc/library/chunk.rst b/Doc/library/chunk.rst
new file mode 100644
index 00000000000000..9950a0ea70649a
--- /dev/null
+++ b/Doc/library/chunk.rst
@@ -0,0 +1,15 @@
+:mod:`!chunk` --- Read IFF chunked data
+=======================================
+
+.. module:: chunk
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!chunk` module was
+`Python 3.12 <https://docs.python.org/3.12/library/chunk.html>`_.
diff --git a/Doc/library/cmath.rst b/Doc/library/cmath.rst
index fdac51d9603ceb..f122e3644ece56 100644
--- a/Doc/library/cmath.rst
+++ b/Doc/library/cmath.rst
@@ -1,5 +1,5 @@
-:mod:`cmath` --- Mathematical functions for complex numbers
-===========================================================
+:mod:`!cmath` --- Mathematical functions for complex numbers
+============================================================
 
 .. module:: cmath
    :synopsis: Mathematical functions for complex numbers.
@@ -43,10 +43,7 @@ Conversions to and from polar coordinates
 
 A Python complex number ``z`` is stored internally using *rectangular*
 or *Cartesian* coordinates.  It is completely determined by its *real
-part* ``z.real`` and its *imaginary part* ``z.imag``.  In other
-words::
-
-   z == z.real + z.imag*1j
+part* ``z.real`` and its *imaginary part* ``z.imag``.
 
 *Polar coordinates* give an alternative way to represent a complex
 number.  In polar coordinates, a complex number *z* is defined by the
@@ -90,7 +87,7 @@ rectangular coordinates to polar coordinates and back.
 .. function:: rect(r, phi)
 
    Return the complex number *x* with polar coordinates *r* and *phi*.
-   Equivalent to ``r * (math.cos(phi) + math.sin(phi)*1j)``.
+   Equivalent to ``complex(r * math.cos(phi), r * math.sin(phi))``.
 
 
 Power and logarithmic functions
@@ -224,19 +221,21 @@ Classification functions
    ``False`` otherwise.
 
    Whether or not two values are considered close is determined according to
-   given absolute and relative tolerances.
+   given absolute and relative tolerances.  If no errors occur, the result will
+   be: ``abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)``.
 
    *rel_tol* is the relative tolerance -- it is the maximum allowed difference
    between *a* and *b*, relative to the larger absolute value of *a* or *b*.
    For example, to set a tolerance of 5%, pass ``rel_tol=0.05``.  The default
    tolerance is ``1e-09``, which assures that the two values are the same
-   within about 9 decimal digits.  *rel_tol* must be greater than zero.
-
-   *abs_tol* is the minimum absolute tolerance -- useful for comparisons near
-   zero. *abs_tol* must be at least zero.
-
-   If no errors occur, the result will be:
-   ``abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)``.
+   within about 9 decimal digits.  *rel_tol* must be nonnegative and less
+   than ``1.0``.
+
+   *abs_tol* is the absolute tolerance; it defaults to ``0.0`` and it must be
+   nonnegative.  When comparing ``x`` to ``0.0``, ``isclose(x, 0)`` is computed
+   as ``abs(x) <= rel_tol  * abs(x)``, which is ``False`` for any ``x`` and
+   rel_tol less than ``1.0``.  So add an appropriate positive abs_tol argument
+   to the call.
 
    The IEEE 754 special values of ``NaN``, ``inf``, and ``-inf`` will be
    handled according to IEEE rules.  Specifically, ``NaN`` is not considered
diff --git a/Doc/library/cmd.rst b/Doc/library/cmd.rst
index 39ef4b481478d1..66544f82f6ff3f 100644
--- a/Doc/library/cmd.rst
+++ b/Doc/library/cmd.rst
@@ -1,5 +1,5 @@
-:mod:`cmd` --- Support for line-oriented command interpreters
-=============================================================
+:mod:`!cmd` --- Support for line-oriented command interpreters
+==============================================================
 
 .. module:: cmd
    :synopsis: Build line-oriented command interpreters.
diff --git a/Doc/library/cmdline.rst b/Doc/library/cmdline.rst
index 5174515ffc23ed..487fd775337af3 100644
--- a/Doc/library/cmdline.rst
+++ b/Doc/library/cmdline.rst
@@ -40,6 +40,7 @@ The following modules have a command-line interface.
 * :mod:`runpy`
 * :ref:`site <site-commandline>`
 * :ref:`sqlite3 <sqlite3-cli>`
+* :ref:`symtable <symtable-cli>`
 * :ref:`sysconfig <sysconfig-cli>`
 * :mod:`tabnanny`
 * :ref:`tarfile <tarfile-commandline>`
diff --git a/Doc/library/cmdlinelibs.rst b/Doc/library/cmdlinelibs.rst
new file mode 100644
index 00000000000000..085d31af7bca1f
--- /dev/null
+++ b/Doc/library/cmdlinelibs.rst
@@ -0,0 +1,21 @@
+.. _cmdlinelibs:
+
+********************************
+Command Line Interface Libraries
+********************************
+
+The modules described in this chapter assist with implementing
+command line and terminal interfaces for applications.
+
+Here's an overview:
+
+.. toctree::
+   :maxdepth: 1
+
+   argparse.rst
+   optparse.rst
+   getpass.rst
+   fileinput.rst
+   curses.rst
+   curses.ascii.rst
+   curses.panel.rst
diff --git a/Doc/library/code.rst b/Doc/library/code.rst
index 8cb604cf48ff0b..8f7692df9fb22d 100644
--- a/Doc/library/code.rst
+++ b/Doc/library/code.rst
@@ -1,5 +1,5 @@
-:mod:`code` --- Interpreter base classes
-========================================
+:mod:`!code` --- Interpreter base classes
+=========================================
 
 .. module:: code
    :synopsis: Facilities to implement read-eval-print loops.
@@ -18,16 +18,16 @@ build applications which provide an interactive interpreter prompt.
    This class deals with parsing and interpreter state (the user's namespace); it
    does not deal with input buffering or prompting or input file naming (the
    filename is always passed in explicitly). The optional *locals* argument
-   specifies the dictionary in which code will be executed; it defaults to a newly
-   created dictionary with key ``'__name__'`` set to ``'__console__'`` and key
-   ``'__doc__'`` set to ``None``.
+   specifies a mapping to use as the namespace in which code will be executed;
+   it defaults to a newly created dictionary with key ``'__name__'`` set to
+   ``'__console__'`` and key ``'__doc__'`` set to ``None``.
 
 
 .. class:: InteractiveConsole(locals=None, filename="<console>", local_exit=False)
 
    Closely emulate the behavior of the interactive Python interpreter. This class
    builds on :class:`InteractiveInterpreter` and adds prompting using the familiar
-   ``sys.ps1`` and ``sys.ps2``, and input buffering. If *local_exit* is True,
+   ``sys.ps1`` and ``sys.ps2``, and input buffering. If *local_exit* is true,
    ``exit()`` and ``quit()`` in the console will not raise :exc:`SystemExit`, but
    instead return to the calling code.
 
diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 010ae25557a9c9..2cfd8a1eaee806 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -1,5 +1,5 @@
-:mod:`codecs` --- Codec registry and base classes
-=================================================
+:mod:`!codecs` --- Codec registry and base classes
+==================================================
 
 .. module:: codecs
    :synopsis: Encode and decode data and streams.
diff --git a/Doc/library/codeop.rst b/Doc/library/codeop.rst
index 55606e1c5f09ac..16f674adb4b22b 100644
--- a/Doc/library/codeop.rst
+++ b/Doc/library/codeop.rst
@@ -1,5 +1,5 @@
-:mod:`codeop` --- Compile Python code
-=====================================
+:mod:`!codeop` --- Compile Python code
+======================================
 
 .. module:: codeop
    :synopsis: Compile (possibly incomplete) Python code.
diff --git a/Doc/library/collections.abc.rst b/Doc/library/collections.abc.rst
index 7bcaba60c6ddbd..850853346991b5 100644
--- a/Doc/library/collections.abc.rst
+++ b/Doc/library/collections.abc.rst
@@ -1,5 +1,5 @@
-:mod:`collections.abc` --- Abstract Base Classes for Containers
-===============================================================
+:mod:`!collections.abc` --- Abstract Base Classes for Containers
+================================================================
 
 .. module:: collections.abc
    :synopsis: Abstract base classes for containers
@@ -146,7 +146,8 @@ ABC                            Inherits from          Abstract Methods        Mi
 
 :class:`Set`                   :class:`Collection`    ``__contains__``,       ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
                                                       ``__iter__``,           ``__gt__``, ``__ge__``, ``__and__``, ``__or__``,
-                                                      ``__len__``             ``__sub__``, ``__xor__``, and ``isdisjoint``
+                                                      ``__len__``             ``__sub__``, ``__rsub__``, ``__xor__``, ``__rxor__``
+                                                                              and ``isdisjoint``
 
 :class:`MutableSet`            :class:`Set`           ``__contains__``,       Inherited :class:`Set` methods and
                                                       ``__iter__``,           ``clear``, ``pop``, ``remove``, ``__ior__``,
@@ -165,7 +166,7 @@ ABC                            Inherits from          Abstract Methods        Mi
                                                       ``__len__``
 
 
-:class:`MappingView`           :class:`Sized`                                 ``__len__``
+:class:`MappingView`           :class:`Sized`                                 ``__init__``, ``__len__`` and ``__repr__``
 :class:`ItemsView`             :class:`MappingView`,                          ``__contains__``,
                                :class:`Set`                                   ``__iter__``
 :class:`KeysView`              :class:`MappingView`,                          ``__contains__``,
@@ -216,6 +217,9 @@ Collections Abstract Base Classes -- Detailed Descriptions
 
    ABC for classes that provide the :meth:`~object.__call__` method.
 
+   See :ref:`annotating-callables` for details on how to use
+   :class:`!Callable` in type annotations.
+
 .. class:: Iterable
 
    ABC for classes that provide the :meth:`~container.__iter__` method.
@@ -253,6 +257,9 @@ Collections Abstract Base Classes -- Detailed Descriptions
    :meth:`~generator.send`,
    :meth:`~generator.throw` and :meth:`~generator.close` methods.
 
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`!Generator` in type annotations.
+
    .. versionadded:: 3.5
 
 .. class:: Sequence
@@ -331,6 +338,11 @@ Collections Abstract Base Classes -- Detailed Descriptions
       Using ``isinstance(gencoro, Coroutine)`` for them will return ``False``.
       Use :func:`inspect.isawaitable` to detect them.
 
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`!Coroutine` in type annotations.
+   The variance and order of type parameters correspond to those of
+   :class:`Generator`.
+
    .. versionadded:: 3.5
 
 .. class:: AsyncIterable
@@ -352,6 +364,9 @@ Collections Abstract Base Classes -- Detailed Descriptions
    ABC for :term:`asynchronous generator` classes that implement the protocol
    defined in :pep:`525` and :pep:`492`.
 
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`!AsyncGenerator` in type annotations.
+
    .. versionadded:: 3.6
 
 .. class:: Buffer
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 19b89ad79c7414..5b4e445762e076 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -1,5 +1,5 @@
-:mod:`collections` --- Container datatypes
-==========================================
+:mod:`!collections` --- Container datatypes
+===========================================
 
 .. module:: collections
     :synopsis: Container datatypes
@@ -99,7 +99,7 @@ The class can be used to simulate nested scopes and is useful in templating.
         :func:`super` function.  A reference to ``d.parents`` is equivalent to:
         ``ChainMap(*d.maps[1:])``.
 
-    Note, the iteration order of a :class:`ChainMap()` is determined by
+    Note, the iteration order of a :class:`ChainMap` is determined by
     scanning the mappings last to first::
 
         >>> baseline = {'music': 'bach', 'art': 'rembrandt'}
@@ -783,10 +783,10 @@ sequence of key-value pairs into a dictionary of lists:
 
 When each key is encountered for the first time, it is not already in the
 mapping; so an entry is automatically created using the :attr:`~defaultdict.default_factory`
-function which returns an empty :class:`list`.  The :meth:`list.append`
+function which returns an empty :class:`list`.  The :meth:`!list.append`
 operation then attaches the value to the new list.  When keys are encountered
 again, the look-up proceeds normally (returning the list for that key) and the
-:meth:`list.append` operation adds another value to the list. This technique is
+:meth:`!list.append` operation adds another value to the list. This technique is
 simpler and faster than an equivalent technique using :meth:`dict.setdefault`:
 
     >>> d = {}
@@ -874,8 +874,8 @@ they add the ability to access fields by name instead of position index.
     ``(1, 2)``, then ``x`` will be a required argument, ``y`` will default to
     ``1``, and ``z`` will default to ``2``.
 
-    If *module* is defined, the ``__module__`` attribute of the named tuple is
-    set to that value.
+    If *module* is defined, the :attr:`~type.__module__` attribute of the
+    named tuple is set to that value.
 
     Named tuple instances do not have per-instance dictionaries, so they are
     lightweight and require no more memory than regular tuples.
@@ -1169,8 +1169,11 @@ Some differences from :class:`dict` still remain:
 In addition to the usual mapping methods, ordered dictionaries also support
 reverse iteration using :func:`reversed`.
 
+.. _collections_OrderedDict__eq__:
+
 Equality tests between :class:`OrderedDict` objects are order-sensitive
-and are implemented as ``list(od1.items())==list(od2.items())``.
+and are roughly equivalent to ``list(od1.items())==list(od2.items())``.
+
 Equality tests between :class:`OrderedDict` objects and other
 :class:`~collections.abc.Mapping` objects are order-insensitive like regular
 dictionaries.  This allows :class:`OrderedDict` objects to be substituted
@@ -1186,7 +1189,7 @@ anywhere a regular dictionary is used.
    method.
 
 .. versionchanged:: 3.9
-    Added merge (``|``) and update (``|=``) operators, specified in :pep:`584`.
+   Added merge (``|``) and update (``|=``) operators, specified in :pep:`584`.
 
 
 :class:`OrderedDict` Examples and Recipes
diff --git a/Doc/library/colorsys.rst b/Doc/library/colorsys.rst
index b672a05b39145d..ffebf4e40dd609 100644
--- a/Doc/library/colorsys.rst
+++ b/Doc/library/colorsys.rst
@@ -1,5 +1,5 @@
-:mod:`colorsys` --- Conversions between color systems
-=====================================================
+:mod:`!colorsys` --- Conversions between color systems
+======================================================
 
 .. module:: colorsys
    :synopsis: Conversion functions between RGB and other color systems.
@@ -14,7 +14,7 @@ The :mod:`colorsys` module defines bidirectional conversions of color values
 between colors expressed in the RGB (Red Green Blue) color space used in
 computer monitors and three other coordinate systems: YIQ, HLS (Hue Lightness
 Saturation) and HSV (Hue Saturation Value).  Coordinates in all of these color
-spaces are floating point values.  In the YIQ space, the Y coordinate is between
+spaces are floating-point values.  In the YIQ space, the Y coordinate is between
 0 and 1, but the I and Q coordinates can be positive or negative.  In all other
 spaces, the coordinates are all between 0 and 1.
 
diff --git a/Doc/library/compileall.rst b/Doc/library/compileall.rst
index df1eefab839cc1..c42288419c4d2d 100644
--- a/Doc/library/compileall.rst
+++ b/Doc/library/compileall.rst
@@ -1,5 +1,5 @@
-:mod:`compileall` --- Byte-compile Python libraries
-===================================================
+:mod:`!compileall` --- Byte-compile Python libraries
+====================================================
 
 .. module:: compileall
    :synopsis: Tools for byte-compiling all Python source files in a directory tree.
@@ -90,7 +90,7 @@ compile Python sources.
 .. option:: -j N
 
    Use *N* workers to compile the files within the given directory.
-   If ``0`` is used, then the result of :func:`os.process_cpu_count()`
+   If ``0`` is used, then the result of :func:`os.process_cpu_count`
    will be used.
 
 .. option:: --invalidation-mode [timestamp|checked-hash|unchecked-hash]
@@ -226,7 +226,7 @@ Public functions
       The *invalidation_mode* parameter was added.
 
    .. versionchanged:: 3.7.2
-      The *invalidation_mode* parameter's default value is updated to None.
+      The *invalidation_mode* parameter's default value is updated to ``None``.
 
    .. versionchanged:: 3.8
       Setting *workers* to 0 now chooses the optimal number of cores.
@@ -289,7 +289,7 @@ Public functions
       The *invalidation_mode* parameter was added.
 
    .. versionchanged:: 3.7.2
-      The *invalidation_mode* parameter's default value is updated to None.
+      The *invalidation_mode* parameter's default value is updated to ``None``.
 
    .. versionchanged:: 3.9
       Added *stripdir*, *prependdir*, *limit_sl_dest* and *hardlink_dupes* arguments.
@@ -318,7 +318,7 @@ Public functions
       The *invalidation_mode* parameter was added.
 
    .. versionchanged:: 3.7.2
-      The *invalidation_mode* parameter's default value is updated to None.
+      The *invalidation_mode* parameter's default value is updated to ``None``.
 
 To force a recompile of all the :file:`.py` files in the :file:`Lib/`
 subdirectory and all its subdirectories::
diff --git a/Doc/library/concurrent.futures.rst b/Doc/library/concurrent.futures.rst
index d3c7a40aa9d390..4e7db8fc854521 100644
--- a/Doc/library/concurrent.futures.rst
+++ b/Doc/library/concurrent.futures.rst
@@ -1,5 +1,5 @@
-:mod:`concurrent.futures` --- Launching parallel tasks
-======================================================
+:mod:`!concurrent.futures` --- Launching parallel tasks
+=======================================================
 
 .. module:: concurrent.futures
    :synopsis: Execute computations concurrently using threads or processes.
@@ -206,7 +206,7 @@ ThreadPoolExecutor Example
            'http://www.cnn.com/',
            'http://europe.wsj.com/',
            'http://www.bbc.co.uk/',
-           'http://nonexistant-subdomain.python.org/']
+           'http://nonexistent-subdomain.python.org/']
 
    # Retrieve a single page and report the URL and contents
    def load_url(url, timeout):
diff --git a/Doc/library/configparser.rst b/Doc/library/configparser.rst
index 9e7638d087a7ce..47477bc06bdce9 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -1,5 +1,5 @@
-:mod:`configparser` --- Configuration file parser
-=================================================
+:mod:`!configparser` --- Configuration file parser
+==================================================
 
 .. module:: configparser
    :synopsis: Configuration file parser.
@@ -54,6 +54,7 @@ can be customized by end users easily.
 
    import os
    os.remove("example.ini")
+   os.remove("override.ini")
 
 
 Quick Start
@@ -147,23 +148,28 @@ case-insensitive and stored in lowercase [1]_.
 It is possible to read several configurations into a single
 :class:`ConfigParser`, where the most recently added configuration has the
 highest priority. Any conflicting keys are taken from the more recent
-configuration while the previously existing keys are retained.
+configuration while the previously existing keys are retained. The example
+below reads in an ``override.ini`` file, which will override any conflicting
+keys from the ``example.ini`` file.
+
+.. code-block:: ini
+
+   [DEFAULT]
+   ServerAliveInterval = -1
 
 .. doctest::
 
-   >>> another_config = configparser.ConfigParser()
-   >>> another_config.read('example.ini')
-   ['example.ini']
-   >>> another_config['topsecret.server.example']['Port']
-   '50022'
-   >>> another_config.read_string("[topsecret.server.example]\nPort=48484")
-   >>> another_config['topsecret.server.example']['Port']
-   '48484'
-   >>> another_config.read_dict({"topsecret.server.example": {"Port": 21212}})
-   >>> another_config['topsecret.server.example']['Port']
-   '21212'
-   >>> another_config['topsecret.server.example']['ForwardX11']
-   'no'
+   >>> config_override = configparser.ConfigParser()
+   >>> config_override['DEFAULT'] = {'ServerAliveInterval': '-1'}
+   >>> with open('override.ini', 'w') as configfile:
+   ...     config_override.write(configfile)
+   ...
+   >>> config_override = configparser.ConfigParser()
+   >>> config_override.read(['example.ini', 'override.ini'])
+   ['example.ini', 'override.ini']
+   >>> print(config_override.get('DEFAULT', 'ServerAliveInterval'))
+   -1
+
 
 This behaviour is equivalent to a :meth:`ConfigParser.read` call with several
 files passed to the *filenames* parameter.
@@ -936,7 +942,13 @@ interpolation if an option used is not defined elsewhere. ::
 ConfigParser Objects
 --------------------
 
-.. class:: ConfigParser(defaults=None, dict_type=dict, allow_no_value=False, delimiters=('=', ':'), comment_prefixes=('#', ';'), inline_comment_prefixes=None, strict=True, empty_lines_in_values=True, default_section=configparser.DEFAULTSECT, interpolation=BasicInterpolation(), converters={})
+.. class:: ConfigParser(defaults=None, dict_type=dict, allow_no_value=False, *, \
+                        delimiters=('=', ':'), comment_prefixes=('#', ';'), \
+                        inline_comment_prefixes=None, strict=True, \
+                        empty_lines_in_values=True, \
+                        default_section=configparser.DEFAULTSECT, \
+                        interpolation=BasicInterpolation(), converters={}, \
+                        allow_unnamed_section=False)
 
    The main configuration parser.  When *defaults* is given, it is initialized
    into the dictionary of intrinsic defaults.  When *dict_type* is given, it
@@ -981,9 +993,38 @@ ConfigParser Objects
    When *converters* is given, it should be a dictionary where each key
    represents the name of a type converter and each value is a callable
    implementing the conversion from string to the desired datatype.  Every
-   converter gets its own corresponding :meth:`!get*()` method on the parser
+   converter gets its own corresponding :meth:`!get*` method on the parser
    object and section proxies.
 
+   When *allow_unnamed_section* is ``True`` (default: ``False``),
+   the first section name can be omitted. See the
+   `"Unnamed Sections" section <#unnamed-sections>`_.
+
+   It is possible to read several configurations into a single
+   :class:`ConfigParser`, where the most recently added configuration has the
+   highest priority. Any conflicting keys are taken from the more recent
+   configuration while the previously existing keys are retained. The example
+   below reads in an ``override.ini`` file, which will override any conflicting
+   keys from the ``example.ini`` file.
+
+   .. code-block:: ini
+
+      [DEFAULT]
+      ServerAliveInterval = -1
+
+   .. doctest::
+
+      >>> config_override = configparser.ConfigParser()
+      >>> config_override['DEFAULT'] = {'ServerAliveInterval': '-1'}
+      >>> with open('override.ini', 'w') as configfile:
+      ...     config_override.write(configfile)
+      ...
+      >>> config_override = configparser.ConfigParser()
+      >>> config_override.read(['example.ini', 'override.ini'])
+      ['example.ini', 'override.ini']
+      >>> print(config_override.get('DEFAULT', 'ServerAliveInterval'))
+      -1
+
    .. versionchanged:: 3.1
       The default *dict_type* is :class:`collections.OrderedDict`.
 
@@ -996,7 +1037,7 @@ ConfigParser Objects
       The *converters* argument was added.
 
    .. versionchanged:: 3.7
-      The *defaults* argument is read with :meth:`read_dict()`,
+      The *defaults* argument is read with :meth:`read_dict`,
       providing consistent behavior across the parser: non-string
       keys and values are implicitly converted to strings.
 
@@ -1008,6 +1049,9 @@ ConfigParser Objects
       Raise a :exc:`MultilineContinuationError` when *allow_no_value* is
       ``True``, and a key without a value is continued with an indented line.
 
+   .. versionchanged:: 3.13
+      The *allow_unnamed_section* argument was added.
+
    .. method:: defaults()
 
       Return a dictionary containing the instance-wide defaults.
@@ -1153,7 +1197,7 @@ ConfigParser Objects
    .. method:: getfloat(section, option, *, raw=False, vars=None[, fallback])
 
       A convenience method which coerces the *option* in the specified *section*
-      to a floating point number.  See :meth:`get` for explanation of *raw*,
+      to a floating-point number.  See :meth:`get` for explanation of *raw*,
       *vars* and *fallback*.
 
 
@@ -1264,18 +1308,30 @@ RawConfigParser Objects
                            comment_prefixes=('#', ';'), \
                            inline_comment_prefixes=None, strict=True, \
                            empty_lines_in_values=True, \
-                           default_section=configparser.DEFAULTSECT[, \
-                           interpolation])
+                           default_section=configparser.DEFAULTSECT, \
+                           interpolation=BasicInterpolation(), converters={}, \
+                           allow_unnamed_section=False)
 
    Legacy variant of the :class:`ConfigParser`.  It has interpolation
    disabled by default and allows for non-string section names, option
    names, and values via its unsafe ``add_section`` and ``set`` methods,
    as well as the legacy ``defaults=`` keyword argument handling.
 
+   .. versionchanged:: 3.2
+      *allow_no_value*, *delimiters*, *comment_prefixes*, *strict*,
+      *empty_lines_in_values*, *default_section* and *interpolation* were
+      added.
+
+   .. versionchanged:: 3.5
+      The *converters* argument was added.
+
    .. versionchanged:: 3.8
       The default *dict_type* is :class:`dict`, since it now preserves
       insertion order.
 
+   .. versionchanged:: 3.13
+      The *allow_unnamed_section* argument was added.
+
    .. note::
       Consider using :class:`ConfigParser` instead which checks types of
       the values to be stored internally.  If you don't want interpolation, you
diff --git a/Doc/library/constants.rst b/Doc/library/constants.rst
index 93a7244f87de6b..3eceecc4e0a736 100644
--- a/Doc/library/constants.rst
+++ b/Doc/library/constants.rst
@@ -79,6 +79,8 @@ A small number of constants live in the built-in namespace.  They are:
    :exc:`SyntaxError`), so they can be considered "true" constants.
 
 
+.. _site-consts:
+
 Constants added by the :mod:`site` module
 -----------------------------------------
 
@@ -94,6 +96,13 @@ should not be used in programs.
    (i.e. EOF) to exit", and when called, raise :exc:`SystemExit` with the
    specified exit code.
 
+.. data:: help
+   :noindex:
+
+   Object that when printed, prints the message "Type help() for interactive
+   help, or help(object) for help about object.", and when called,
+   acts as described :func:`elsewhere <help>`.
+
 .. data:: copyright
           credits
 
diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 73e53aec9cbf1c..e8f264f949807d 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -151,9 +151,9 @@ Functions and classes provided:
    created by :func:`asynccontextmanager` to meet the requirement that context
    managers support multiple invocations in order to be used as decorators.
 
-  .. versionchanged:: 3.10
-     Async context managers created with :func:`asynccontextmanager` can
-     be used as decorators.
+   .. versionchanged:: 3.10
+      Async context managers created with :func:`asynccontextmanager` can
+      be used as decorators.
 
 
 .. function:: closing(thing)
@@ -314,13 +314,15 @@ Functions and classes provided:
 
    If the code within the :keyword:`!with` block raises a
    :exc:`BaseExceptionGroup`, suppressed exceptions are removed from the
-   group.  If any exceptions in the group are not suppressed, a group containing them is re-raised.
+   group.  Any exceptions of the group which are not suppressed are re-raised in
+   a new group which is created using the original group's :meth:`~BaseExceptionGroup.derive`
+   method.
 
    .. versionadded:: 3.4
 
    .. versionchanged:: 3.12
       ``suppress`` now supports suppressing exceptions raised as
-      part of an :exc:`BaseExceptionGroup`.
+      part of a :exc:`BaseExceptionGroup`.
 
 .. function:: redirect_stdout(new_target)
 
@@ -796,7 +798,7 @@ executing that callback::
        if result:
            stack.pop_all()
 
-This allows the intended cleanup up behaviour to be made explicit up front,
+This allows the intended cleanup behaviour to be made explicit up front,
 rather than requiring a separate flag variable.
 
 If a particular application uses this pattern a lot, it can be simplified
diff --git a/Doc/library/contextvars.rst b/Doc/library/contextvars.rst
index 647832447de946..2b1fb9fdd29cd8 100644
--- a/Doc/library/contextvars.rst
+++ b/Doc/library/contextvars.rst
@@ -1,5 +1,5 @@
-:mod:`contextvars` --- Context Variables
-========================================
+:mod:`!contextvars` --- Context Variables
+=========================================
 
 .. module:: contextvars
    :synopsis: Context Variables
@@ -15,7 +15,7 @@ function and the :class:`~contextvars.Context` class should be used to
 manage the current context in asynchronous frameworks.
 
 Context managers that have state should use Context Variables
-instead of :func:`threading.local()` to prevent their state from
+instead of :func:`threading.local` to prevent their state from
 bleeding to other code unexpectedly, when used in concurrent code.
 
 See also :pep:`567` for additional details.
@@ -144,51 +144,89 @@ Manual Context Management
    To get a copy of the current context use the
    :func:`~contextvars.copy_context` function.
 
-   Every thread will have a different top-level :class:`~contextvars.Context`
-   object. This means that a :class:`ContextVar` object behaves in a similar
-   fashion to :func:`threading.local()` when values are assigned in different
-   threads.
+   Each thread has its own effective stack of :class:`!Context` objects.  The
+   :term:`current context` is the :class:`!Context` object at the top of the
+   current thread's stack.  All :class:`!Context` objects in the stacks are
+   considered to be *entered*.
+
+   *Entering* a context, which can be done by calling its :meth:`~Context.run`
+   method, makes the context the current context by pushing it onto the top of
+   the current thread's context stack.
+
+   *Exiting* from the current context, which can be done by returning from the
+   callback passed to the :meth:`~Context.run` method, restores the current
+   context to what it was before the context was entered by popping the context
+   off the top of the context stack.
+
+   Since each thread has its own context stack, :class:`ContextVar` objects
+   behave in a similar fashion to :func:`threading.local` when values are
+   assigned in different threads.
+
+   Attempting to enter an already entered context, including contexts entered in
+   other threads, raises a :exc:`RuntimeError`.
+
+   After exiting a context, it can later be re-entered (from any thread).
+
+   Any changes to :class:`ContextVar` values via the :meth:`ContextVar.set`
+   method are recorded in the current context.  The :meth:`ContextVar.get`
+   method returns the value associated with the current context.  Exiting a
+   context effectively reverts any changes made to context variables while the
+   context was entered (if needed, the values can be restored by re-entering the
+   context).
 
    Context implements the :class:`collections.abc.Mapping` interface.
 
    .. method:: run(callable, *args, **kwargs)
 
-      Execute ``callable(*args, **kwargs)`` code in the context object
-      the *run* method is called on.  Return the result of the execution
-      or propagate an exception if one occurred.
+      Enters the Context, executes ``callable(*args, **kwargs)``, then exits the
+      Context.  Returns *callable*'s return value, or propagates an exception if
+      one occurred.
+
+      Example:
+
+      .. testcode::
+
+         import contextvars
 
-      Any changes to any context variables that *callable* makes will
-      be contained in the context object::
+         var = contextvars.ContextVar('var')
+         var.set('spam')
+         print(var.get())  # 'spam'
 
-        var = ContextVar('var')
-        var.set('spam')
+         ctx = contextvars.copy_context()
 
-        def main():
-            # 'var' was set to 'spam' before
-            # calling 'copy_context()' and 'ctx.run(main)', so:
-            # var.get() == ctx[var] == 'spam'
+         def main():
+             # 'var' was set to 'spam' before
+             # calling 'copy_context()' and 'ctx.run(main)', so:
+             print(var.get())  # 'spam'
+             print(ctx[var])  # 'spam'
 
-            var.set('ham')
+             var.set('ham')
 
-            # Now, after setting 'var' to 'ham':
-            # var.get() == ctx[var] == 'ham'
+             # Now, after setting 'var' to 'ham':
+             print(var.get())  # 'ham'
+             print(ctx[var])  # 'ham'
 
-        ctx = copy_context()
+         # Any changes that the 'main' function makes to 'var'
+         # will be contained in 'ctx'.
+         ctx.run(main)
 
-        # Any changes that the 'main' function makes to 'var'
-        # will be contained in 'ctx'.
-        ctx.run(main)
+         # The 'main()' function was run in the 'ctx' context,
+         # so changes to 'var' are contained in it:
+         print(ctx[var])  # 'ham'
 
-        # The 'main()' function was run in the 'ctx' context,
-        # so changes to 'var' are contained in it:
-        # ctx[var] == 'ham'
+         # However, outside of 'ctx', 'var' is still set to 'spam':
+         print(var.get())  # 'spam'
 
-        # However, outside of 'ctx', 'var' is still set to 'spam':
-        # var.get() == 'spam'
+      .. testoutput::
+         :hide:
 
-      The method raises a :exc:`RuntimeError` when called on the same
-      context object from more than one OS thread, or when called
-      recursively.
+         spam
+         spam
+         spam
+         ham
+         ham
+         ham
+         spam
 
    .. method:: copy()
 
@@ -254,7 +292,7 @@ client::
         # without passing it explicitly to this function.
 
         client_addr = client_addr_var.get()
-        return f'Good bye, client @ {client_addr}\n'.encode()
+        return f'Good bye, client @ {client_addr}\r\n'.encode()
 
     async def handle_request(reader, writer):
         addr = writer.transport.get_extra_info('socket').getpeername()
@@ -268,9 +306,10 @@ client::
             print(line)
             if not line.strip():
                 break
-            writer.write(line)
 
-        writer.write(render_goodbye())
+        writer.write(b'HTTP/1.1 200 OK\r\n')  # status line
+        writer.write(b'\r\n')  # headers
+        writer.write(render_goodbye())  # body
         writer.close()
 
     async def main():
@@ -282,5 +321,6 @@ client::
 
     asyncio.run(main())
 
-    # To test it you can use telnet:
+    # To test it you can use telnet or curl:
     #     telnet 127.0.0.1 8081
+    #     curl 127.0.0.1:8081
diff --git a/Doc/library/copy.rst b/Doc/library/copy.rst
index 74333b2e934814..95b41f988a035b 100644
--- a/Doc/library/copy.rst
+++ b/Doc/library/copy.rst
@@ -1,5 +1,5 @@
-:mod:`copy` --- Shallow and deep copy operations
-================================================
+:mod:`!copy` --- Shallow and deep copy operations
+=================================================
 
 .. module:: copy
    :synopsis: Shallow and deep copy operations.
diff --git a/Doc/library/copyreg.rst b/Doc/library/copyreg.rst
index 2a28c043f80723..6e3144824ebe91 100644
--- a/Doc/library/copyreg.rst
+++ b/Doc/library/copyreg.rst
@@ -1,5 +1,5 @@
-:mod:`copyreg` --- Register :mod:`pickle` support functions
-===========================================================
+:mod:`!copyreg` --- Register :mod:`!pickle` support functions
+=============================================================
 
 .. module:: copyreg
    :synopsis: Register pickle support functions.
diff --git a/Doc/library/crypt.rst b/Doc/library/crypt.rst
new file mode 100644
index 00000000000000..9ff37196ccf69f
--- /dev/null
+++ b/Doc/library/crypt.rst
@@ -0,0 +1,20 @@
+:mod:`!crypt` --- Function to check Unix passwords
+==================================================
+
+.. module:: crypt
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+Applications can use the :mod:`hashlib` module from the standard library.
+Other possible replacements are third-party libraries from PyPI:
+:pypi:`legacycrypt`, :pypi:`bcrypt`, :pypi:`argon2-cffi`, or :pypi:`passlib`.
+These are not supported or maintained by the Python core team.
+
+The last version of Python that provided the :mod:`!crypt` module was
+`Python 3.12 <https://docs.python.org/3.12/library/crypt.html>`_.
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index d17468023c6de1..533cdf13974be6 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -1,5 +1,5 @@
-:mod:`csv` --- CSV File Reading and Writing
-===========================================
+:mod:`!csv` --- CSV File Reading and Writing
+============================================
 
 .. module:: csv
    :synopsis: Write and read tabular data to and from delimited files.
@@ -349,8 +349,8 @@ The :mod:`csv` module defines the following constants:
    ``None``.  This is similar to :data:`QUOTE_ALL`, except that if a
    field value is ``None`` an empty (unquoted) string is written.
 
-   Instructs :class:`reader` objects to interpret an empty (unquoted) field as None and
-   to otherwise behave as :data:`QUOTE_ALL`.
+   Instructs :class:`reader` objects to interpret an empty (unquoted) field
+   as ``None`` and to otherwise behave as :data:`QUOTE_ALL`.
 
    .. versionadded:: 3.12
 
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 1deaa3a0f3899f..f96cfeb5796cfe 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -1,5 +1,5 @@
-:mod:`ctypes` --- A foreign function library for Python
-=======================================================
+:mod:`!ctypes` --- A foreign function library for Python
+========================================================
 
 .. module:: ctypes
    :synopsis: A foreign function library for Python.
@@ -51,7 +51,7 @@ function call fails.
 
 
 Here are some examples for Windows. Note that ``msvcrt`` is the MS standard C
-library containing most standard C functions, and uses the cdecl calling
+library containing most standard C functions, and uses the ``cdecl`` calling
 convention::
 
    >>> from ctypes import *
@@ -107,7 +107,7 @@ Functions are accessed as attributes of dll objects::
 
 Note that win32 system dlls like ``kernel32`` and ``user32`` often export ANSI
 as well as UNICODE versions of a function. The UNICODE version is exported with
-an ``W`` appended to the name, while the ANSI version is exported with an ``A``
+a ``W`` appended to the name, while the ANSI version is exported with an ``A``
 appended to the name. The win32 ``GetModuleHandle`` function, which returns a
 *module handle* for a given module name, has the following C prototype, and a
 macro is used to expose one of them as ``GetModuleHandle`` depending on whether
@@ -383,7 +383,7 @@ as calling functions with a fixed number of parameters. On some platforms, and i
 particular ARM64 for Apple Platforms, the calling convention for variadic functions
 is different than that for regular functions.
 
-On those platforms it is required to specify the :attr:`~_FuncPtr.argtypes`
+On those platforms it is required to specify the :attr:`~_CFuncPtr.argtypes`
 attribute for the regular, non-variadic, function arguments:
 
 .. code-block:: python3
@@ -391,7 +391,7 @@ attribute for the regular, non-variadic, function arguments:
    libc.printf.argtypes = [ctypes.c_char_p]
 
 Because specifying the attribute does not inhibit portability it is advised to always
-specify :attr:`~_FuncPtr.argtypes` for all variadic functions.
+specify :attr:`~_CFuncPtr.argtypes` for all variadic functions.
 
 
 .. _ctypes-calling-functions-with-own-custom-data-types:
@@ -426,9 +426,9 @@ Specifying the required argument types (function prototypes)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 It is possible to specify the required argument types of functions exported from
-DLLs by setting the :attr:`~_FuncPtr.argtypes` attribute.
+DLLs by setting the :attr:`~_CFuncPtr.argtypes` attribute.
 
-:attr:`~_FuncPtr.argtypes` must be a sequence of C data types (the :func:`!printf` function is
+:attr:`~_CFuncPtr.argtypes` must be a sequence of C data types (the :func:`!printf` function is
 probably not a good example here, because it takes a variable number and
 different types of parameters depending on the format string, on the other hand
 this is quite handy to experiment with this feature)::
@@ -453,7 +453,7 @@ prototype for a C function), and tries to convert the arguments to valid types::
 
 If you have defined your own classes which you pass to function calls, you have
 to implement a :meth:`~_CData.from_param` class method for them to be able to use them
-in the :attr:`~_FuncPtr.argtypes` sequence. The :meth:`~_CData.from_param` class method receives
+in the :attr:`~_CFuncPtr.argtypes` sequence. The :meth:`~_CData.from_param` class method receives
 the Python object passed to the function call, it should do a typecheck or
 whatever is needed to make sure this object is acceptable, and then return the
 object itself, its :attr:`!_as_parameter_` attribute, or whatever you want to
@@ -476,7 +476,7 @@ Return types
 
 
 By default functions are assumed to return the C :c:expr:`int` type.  Other
-return types can be specified by setting the :attr:`~_FuncPtr.restype` attribute of the
+return types can be specified by setting the :attr:`~_CFuncPtr.restype` attribute of the
 function object.
 
 The C prototype of :c:func:`time` is ``time_t time(time_t *)``. Because :c:type:`time_t`
@@ -485,7 +485,7 @@ specify the :attr:`!restype` attribute::
 
    >>> libc.time.restype = c_time_t
 
-The argument types can be specified using :attr:`~_FuncPtr.argtypes`::
+The argument types can be specified using :attr:`~_CFuncPtr.argtypes`::
 
    >>> libc.time.argtypes = (POINTER(c_time_t),)
 
@@ -508,7 +508,7 @@ a string pointer and a char, and returns a pointer to a string::
    >>>
 
 If you want to avoid the :func:`ord("x") <ord>` calls above, you can set the
-:attr:`~_FuncPtr.argtypes` attribute, and the second argument will be converted from a
+:attr:`~_CFuncPtr.argtypes` attribute, and the second argument will be converted from a
 single character Python bytes object into a C char:
 
 .. doctest::
@@ -527,7 +527,7 @@ single character Python bytes object into a C char:
    >>>
 
 You can also use a callable Python object (a function or a class for example) as
-the :attr:`~_FuncPtr.restype` attribute, if the foreign function returns an integer.  The
+the :attr:`~_CFuncPtr.restype` attribute, if the foreign function returns an integer.  The
 callable will be called with the *integer* the C function returns, and the
 result of this call will be used as the result of your function call. This is
 useful to check for error return values and automatically raise an exception::
@@ -555,7 +555,7 @@ get the string representation of an error code, and *returns* an exception.
 :func:`GetLastError` to retrieve it.
 
 Please note that a much more powerful error checking mechanism is available
-through the :attr:`~_FuncPtr.errcheck` attribute;
+through the :attr:`~_CFuncPtr.errcheck` attribute;
 see the reference manual for details.
 
 
@@ -859,7 +859,7 @@ Type conversions
 ^^^^^^^^^^^^^^^^
 
 Usually, ctypes does strict type checking.  This means, if you have
-``POINTER(c_int)`` in the :attr:`~_FuncPtr.argtypes` list of a function or as the type of
+``POINTER(c_int)`` in the :attr:`~_CFuncPtr.argtypes` list of a function or as the type of
 a member field in a structure definition, only instances of exactly the same
 type are accepted.  There are some exceptions to this rule, where ctypes accepts
 other objects.  For example, you can pass compatible array instances instead of
@@ -880,7 +880,7 @@ pointer types.  So, for ``POINTER(c_int)``, ctypes accepts an array of c_int::
    >>>
 
 In addition, if a function argument is explicitly declared to be a pointer type
-(such as ``POINTER(c_int)``) in :attr:`~_FuncPtr.argtypes`, an object of the pointed
+(such as ``POINTER(c_int)``) in :attr:`~_CFuncPtr.argtypes`, an object of the pointed
 type (``c_int`` in this case) can be passed to the function.  ctypes will apply
 the required :func:`byref` conversion in this case automatically.
 
@@ -1395,13 +1395,15 @@ way is to instantiate one of the following classes:
 
 .. class:: OleDLL(name, mode=DEFAULT_MODE, handle=None, use_errno=False, use_last_error=False, winmode=None)
 
-   Windows only: Instances of this class represent loaded shared libraries,
+   Instances of this class represent loaded shared libraries,
    functions in these libraries use the ``stdcall`` calling convention, and are
    assumed to return the windows specific :class:`HRESULT` code.  :class:`HRESULT`
    values contain information specifying whether the function call failed or
    succeeded, together with additional error code.  If the return value signals a
    failure, an :class:`OSError` is automatically raised.
 
+   .. availability:: Windows
+
    .. versionchanged:: 3.3
       :exc:`WindowsError` used to be raised,
       which is now an alias of :exc:`OSError`.
@@ -1413,14 +1415,17 @@ way is to instantiate one of the following classes:
 
 .. class:: WinDLL(name, mode=DEFAULT_MODE, handle=None, use_errno=False, use_last_error=False, winmode=None)
 
-   Windows only: Instances of this class represent loaded shared libraries,
+   Instances of this class represent loaded shared libraries,
    functions in these libraries use the ``stdcall`` calling convention, and are
    assumed to return :c:expr:`int` by default.
 
+   .. availability:: Windows
+
    .. versionchanged:: 3.12
 
       The *name* parameter can now be a :term:`path-like object`.
 
+
 The Python :term:`global interpreter lock` is released before calling any
 function exported by these libraries, and reacquired afterwards.
 
@@ -1556,13 +1561,17 @@ These prefabricated library loaders are available:
 .. data:: windll
    :noindex:
 
-   Windows only: Creates :class:`WinDLL` instances.
+   Creates :class:`WinDLL` instances.
+
+   .. availability:: Windows
 
 
 .. data:: oledll
    :noindex:
 
-   Windows only: Creates :class:`OleDLL` instances.
+   Creates :class:`OleDLL` instances.
+
+   .. availability:: Windows
 
 
 .. data:: pydll
@@ -1609,10 +1618,20 @@ As explained in the previous section, foreign functions can be accessed as
 attributes of loaded shared libraries.  The function objects created in this way
 by default accept any number of arguments, accept any ctypes data instances as
 arguments, and return the default result type specified by the library loader.
-They are instances of a private class:
 
+They are instances of a private local class :class:`!_FuncPtr` (not exposed
+in :mod:`!ctypes`) which inherits from the private :class:`_CFuncPtr` class:
+
+.. doctest::
+
+   >>> import ctypes
+   >>> lib = ctypes.CDLL(None)
+   >>> issubclass(lib._FuncPtr, ctypes._CFuncPtr)
+   True
+   >>> lib._FuncPtr is ctypes._CFuncPtr
+   False
 
-.. class:: _FuncPtr
+.. class:: _CFuncPtr
 
    Base class for C callable foreign functions.
 
@@ -1724,11 +1743,13 @@ See :ref:`ctypes-callback-functions` for examples.
 
 .. function:: WINFUNCTYPE(restype, *argtypes, use_errno=False, use_last_error=False)
 
-   Windows only: The returned function prototype creates functions that use the
+   The returned function prototype creates functions that use the
    ``stdcall`` calling convention.  The function will
    release the GIL during the call.  *use_errno* and *use_last_error* have the
    same meaning as above.
 
+   .. availability:: Windows
+
 
 .. function:: PYFUNCTYPE(restype, *argtypes)
 
@@ -1778,7 +1799,7 @@ different ways, depending on the type and number of the parameters in the call:
 The optional *paramflags* parameter creates foreign function wrappers with much
 more functionality than the features described above.
 
-*paramflags* must be a tuple of the same length as :attr:`~_FuncPtr.argtypes`.
+*paramflags* must be a tuple of the same length as :attr:`~_CFuncPtr.argtypes`.
 
 Each item in this tuple contains further information about a parameter, it must
 be a tuple containing one, two, or three items.
@@ -1849,7 +1870,7 @@ value if there is a single one, or a tuple containing the output parameter
 values when there are more than one, so the GetWindowRect function now returns a
 RECT instance, when called.
 
-Output parameters can be combined with the :attr:`~_FuncPtr.errcheck` protocol to do
+Output parameters can be combined with the :attr:`~_CFuncPtr.errcheck` protocol to do
 further output processing and error checking.  The win32 ``GetWindowRect`` api
 function returns a ``BOOL`` to signal success or failure, so this function could
 do the error checking, and raises an exception when the api call failed::
@@ -1862,7 +1883,7 @@ do the error checking, and raises an exception when the api call failed::
    >>> GetWindowRect.errcheck = errcheck
    >>>
 
-If the :attr:`~_FuncPtr.errcheck` function returns the argument tuple it receives
+If the :attr:`~_CFuncPtr.errcheck` function returns the argument tuple it receives
 unchanged, :mod:`ctypes` continues the normal processing it does on the output
 parameters.  If you want to return a tuple of window coordinates instead of a
 ``RECT`` instance, you can retrieve the fields in the function and return them
@@ -1954,17 +1975,21 @@ Utility functions
 
 .. function:: DllCanUnloadNow()
 
-   Windows only: This function is a hook which allows implementing in-process
+   This function is a hook which allows implementing in-process
    COM servers with ctypes.  It is called from the DllCanUnloadNow function that
    the _ctypes extension dll exports.
 
+   .. availability:: Windows
+
 
 .. function:: DllGetClassObject()
 
-   Windows only: This function is a hook which allows implementing in-process
+   This function is a hook which allows implementing in-process
    COM servers with ctypes.  It is called from the DllGetClassObject function
    that the ``_ctypes`` extension dll exports.
 
+   .. availability:: Windows
+
 
 .. function:: find_library(name)
    :module: ctypes.util
@@ -1980,7 +2005,7 @@ Utility functions
 .. function:: find_msvcrt()
    :module: ctypes.util
 
-   Windows only: return the filename of the VC runtime library used by Python,
+   Returns the filename of the VC runtime library used by Python,
    and by the extension modules.  If the name of the library cannot be
    determined, ``None`` is returned.
 
@@ -1988,20 +2013,27 @@ Utility functions
    with a call to the ``free(void *)``, it is important that you use the
    function in the same library that allocated the memory.
 
+   .. availability:: Windows
+
 
 .. function:: FormatError([code])
 
-   Windows only: Returns a textual description of the error code *code*.  If no
+   Returns a textual description of the error code *code*.  If no
    error code is specified, the last error code is used by calling the Windows
    api function GetLastError.
 
+   .. availability:: Windows
+
 
 .. function:: GetLastError()
 
-   Windows only: Returns the last error code set by Windows in the calling thread.
+   Returns the last error code set by Windows in the calling thread.
    This function calls the Windows ``GetLastError()`` function directly,
    it does not return the ctypes-private copy of the error code.
 
+   .. availability:: Windows
+
+
 .. function:: get_errno()
 
    Returns the current value of the ctypes-private copy of the system
@@ -2011,11 +2043,14 @@ Utility functions
 
 .. function:: get_last_error()
 
-   Windows only: returns the current value of the ctypes-private copy of the system
+   Returns the current value of the ctypes-private copy of the system
    :data:`!LastError` variable in the calling thread.
 
+   .. availability:: Windows
+
    .. audit-event:: ctypes.get_last_error "" ctypes.get_last_error
 
+
 .. function:: memmove(dst, src, count)
 
    Same as the standard C memmove library function: copies *count* bytes from
@@ -2064,10 +2099,12 @@ Utility functions
 
 .. function:: set_last_error(value)
 
-   Windows only: set the current value of the ctypes-private copy of the system
+   Sets the current value of the ctypes-private copy of the system
    :data:`!LastError` variable in the calling thread to *value* and return the
    previous value.
 
+   .. availability:: Windows
+
    .. audit-event:: ctypes.set_last_error error ctypes.set_last_error
 
 
@@ -2088,12 +2125,14 @@ Utility functions
 
 .. function:: WinError(code=None, descr=None)
 
-   Windows only: this function is probably the worst-named thing in ctypes. It
+   This function is probably the worst-named thing in ctypes. It
    creates an instance of :exc:`OSError`.  If *code* is not specified,
    ``GetLastError`` is called to determine the error code. If *descr* is not
    specified, :func:`FormatError` is called to get a textual description of the
    error.
 
+   .. availability:: Windows
+
    .. versionchanged:: 3.3
       An instance of :exc:`WindowsError` used to be created, which is now an
       alias of :exc:`OSError`.
@@ -2162,7 +2201,7 @@ Data types
 
       This method adapts *obj* to a ctypes type.  It is called with the actual
       object used in a foreign function call when the type is present in the
-      foreign function's :attr:`~_FuncPtr.argtypes` tuple;
+      foreign function's :attr:`~_CFuncPtr.argtypes` tuple;
       it must return an object that can be used as a function call parameter.
 
       All ctypes data types have a default implementation of this classmethod
@@ -2228,7 +2267,7 @@ Fundamental data types
 Fundamental data types, when returned as foreign function call results, or, for
 example, by retrieving structure field members or array items, are transparently
 converted to native Python types.  In other words, if a foreign function has a
-:attr:`~_FuncPtr.restype` of :class:`c_char_p`, you will always receive a Python bytes
+:attr:`~_CFuncPtr.restype` of :class:`c_char_p`, you will always receive a Python bytes
 object, *not* a :class:`c_char_p` instance.
 
 .. XXX above is false, it actually returns a Unicode string
@@ -2433,9 +2472,11 @@ These are the fundamental ctypes data types:
 
 .. class:: HRESULT
 
-   Windows only: Represents a :c:type:`!HRESULT` value, which contains success or
+   Represents a :c:type:`!HRESULT` value, which contains success or
    error information for a function or method call.
 
+   .. availability:: Windows
+
 
 .. class:: py_object
 
@@ -2540,6 +2581,8 @@ fields, or any other data types containing pointer type fields.
       the structure when being packed or unpacked to/from memory.
       Setting this attribute to 0 is the same as not setting it at all.
 
+      .. versionadded:: 3.13
+
    .. attribute:: _anonymous_
 
       An optional sequence that lists the names of unnamed (anonymous) fields.
@@ -2621,6 +2664,15 @@ Arrays and pointers
    Array subclass constructors accept positional arguments, used to
    initialize the elements in order.
 
+.. function:: ARRAY(type, length)
+
+   Create an array.
+   Equivalent to ``type * length``, where *type* is a
+   :mod:`ctypes` data type and *length* an integer.
+
+   This function is :term:`soft deprecated` in favor of multiplication.
+   There are no plans to remove it.
+
 
 .. class:: _Pointer
 
diff --git a/Doc/library/curses.ascii.rst b/Doc/library/curses.ascii.rst
index 410b76e77c025b..cb895664ff1b11 100644
--- a/Doc/library/curses.ascii.rst
+++ b/Doc/library/curses.ascii.rst
@@ -1,5 +1,5 @@
-:mod:`curses.ascii` --- Utilities for ASCII characters
-======================================================
+:mod:`!curses.ascii` --- Utilities for ASCII characters
+=======================================================
 
 .. module:: curses.ascii
    :synopsis: Constants and set-membership functions for ASCII characters.
diff --git a/Doc/library/curses.panel.rst b/Doc/library/curses.panel.rst
index d770c03c8375f4..11fd841d381f69 100644
--- a/Doc/library/curses.panel.rst
+++ b/Doc/library/curses.panel.rst
@@ -1,5 +1,5 @@
-:mod:`curses.panel` --- A panel stack extension for curses
-==========================================================
+:mod:`!curses.panel` --- A panel stack extension for curses
+===========================================================
 
 .. module:: curses.panel
    :synopsis: A panel stack extension that adds depth to  curses windows.
diff --git a/Doc/library/curses.rst b/Doc/library/curses.rst
index 550872ce2ca59e..6c7fc721a3e0fb 100644
--- a/Doc/library/curses.rst
+++ b/Doc/library/curses.rst
@@ -1,5 +1,5 @@
-:mod:`curses` --- Terminal handling for character-cell displays
-===============================================================
+:mod:`!curses` --- Terminal handling for character-cell displays
+================================================================
 
 .. module:: curses
    :synopsis: An interface to the curses library, providing portable
@@ -21,7 +21,7 @@ for Windows, DOS, and possibly other systems as well.  This extension module is
 designed to match the API of ncurses, an open-source curses library hosted on
 Linux and the BSD variants of Unix.
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 .. note::
 
@@ -924,7 +924,7 @@ the following methods and attributes:
 
 .. method:: window.getbegyx()
 
-   Return a tuple ``(y, x)`` of co-ordinates of upper-left corner.
+   Return a tuple ``(y, x)`` of coordinates of upper-left corner.
 
 
 .. method:: window.getbkgd()
diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
index 7a8b83e1384e5f..cfca11afbd2e41 100644
--- a/Doc/library/dataclasses.rst
+++ b/Doc/library/dataclasses.rst
@@ -124,7 +124,7 @@ Module contents
    - *unsafe_hash*: If ``False`` (the default), a :meth:`~object.__hash__` method
      is generated according to how *eq* and *frozen* are set.
 
-     :meth:`!__hash__` is used by built-in :meth:`hash()`, and when objects are
+     :meth:`!__hash__` is used by built-in :meth:`hash`, and when objects are
      added to hashed collections such as dictionaries and sets.  Having a
      :meth:`!__hash__` implies that instances of the class are immutable.
      Mutability is a complicated property that depends on the programmer's
@@ -187,6 +187,20 @@ Module contents
      If :attr:`!__slots__` is already defined in the class, then :exc:`TypeError`
      is raised.
 
+    .. warning::
+        Calling no-arg :func:`super` in dataclasses using ``slots=True``
+        will result in the following exception being raised:
+        ``TypeError: super(type, obj): obj must be an instance or subtype of type``.
+        The two-arg :func:`super` is a valid workaround.
+        See :gh:`90562` for full details.
+
+    .. warning::
+       Passing parameters to a base class :meth:`~object.__init_subclass__`
+       when using ``slots=True`` will result in a :exc:`TypeError`.
+       Either use ``__init_subclass__`` with no parameters
+       or use default values as a workaround.
+       See :gh:`91126` for full details.
+
     .. versionadded:: 3.10
 
     .. versionchanged:: 3.11
@@ -201,7 +215,8 @@ Module contents
 
    - *weakref_slot*: If true (the default is ``False``), add a slot
      named "__weakref__", which is required to make an instance
-     weakref-able.  It is an error to specify ``weakref_slot=True``
+     :func:`weakref-able <weakref.ref>`.
+     It is an error to specify ``weakref_slot=True``
      without also specifying ``slots=True``.
 
     .. versionadded:: 3.11
@@ -278,7 +293,7 @@ Module contents
      generated equality and comparison methods (:meth:`~object.__eq__`,
      :meth:`~object.__gt__`, et al.).
 
-   - *metadata*: This can be a mapping or None. None is treated as
+   - *metadata*: This can be a mapping or ``None``. ``None`` is treated as
      an empty dict.  This value is wrapped in
      :func:`~types.MappingProxyType` to make it read-only, and exposed
      on the :class:`Field` object. It is not used at all by Data
@@ -458,8 +473,8 @@ Module contents
 
 .. function:: is_dataclass(obj)
 
-   Return ``True`` if its parameter is a dataclass or an instance of one,
-   otherwise return ``False``.
+   Return ``True`` if its parameter is a dataclass (including subclasses of a
+   dataclass) or an instance of one, otherwise return ``False``.
 
    If you need to know if a class is an instance of a dataclass (and
    not a dataclass itself), then add a further check for ``not
@@ -615,7 +630,9 @@ methods will raise a :exc:`FrozenInstanceError` when invoked.
 
 There is a tiny performance penalty when using ``frozen=True``:
 :meth:`~object.__init__` cannot use simple assignment to initialize fields, and
-must use :meth:`!__setattr__`.
+must use :meth:`!object.__setattr__`.
+
+.. Make sure to not remove "object" from "object.__setattr__" in the above markup!
 
 .. _dataclasses-inheritance:
 
diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index b20b2027cfcc93..211e625c4303b0 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1,5 +1,5 @@
-:mod:`datetime` --- Basic date and time types
-=============================================
+:mod:`!datetime` --- Basic date and time types
+==============================================
 
 .. module:: datetime
    :synopsis: Basic date and time types.
@@ -48,7 +48,7 @@ Aware and Naive Objects
 -----------------------
 
 Date and time objects may be categorized as "aware" or "naive" depending on
-whether or not they include timezone information.
+whether or not they include time zone information.
 
 With sufficient knowledge of applicable algorithmic and political time
 adjustments, such as time zone and daylight saving time information,
@@ -58,7 +58,7 @@ interpretation. [#]_
 
 A **naive** object does not contain enough information to unambiguously locate
 itself relative to other date/time objects. Whether a naive object represents
-Coordinated Universal Time (UTC), local time, or time in some other timezone is
+Coordinated Universal Time (UTC), local time, or time in some other time zone is
 purely up to the program, just like it is up to the program whether a
 particular number represents metres, miles, or mass. Naive objects are easy to
 understand and to work with, at the cost of ignoring some aspects of reality.
@@ -70,9 +70,9 @@ These :class:`tzinfo` objects capture information about the offset from UTC
 time, the time zone name, and whether daylight saving time is in effect.
 
 Only one concrete :class:`tzinfo` class, the :class:`timezone` class, is
-supplied by the :mod:`!datetime` module. The :class:`timezone` class can
-represent simple timezones with fixed offsets from UTC, such as UTC itself or
-North American EST and EDT timezones. Supporting timezones at deeper levels of
+supplied by the :mod:`!datetime` module. The :class:`!timezone` class can
+represent simple time zones with fixed offsets from UTC, such as UTC itself or
+North American EST and EDT time zones. Supporting time zones at deeper levels of
 detail is up to the application. The rules for time adjustment across the
 world are more political than rational, change frequently, and there is no
 standard suitable for every application aside from UTC.
@@ -95,7 +95,7 @@ The :mod:`!datetime` module exports the following constants:
 
 .. attribute:: UTC
 
-   Alias for the UTC timezone singleton :attr:`datetime.timezone.utc`.
+   Alias for the UTC time zone singleton :attr:`datetime.timezone.utc`.
 
    .. versionadded:: 3.11
 
@@ -180,19 +180,19 @@ Objects of the :class:`date` type are always naive.
 
 An object of type :class:`.time` or :class:`.datetime` may be aware or naive.
 
-A :class:`.datetime` object *d* is aware if both of the following hold:
+A :class:`.datetime` object ``d`` is aware if both of the following hold:
 
 1. ``d.tzinfo`` is not ``None``
 2. ``d.tzinfo.utcoffset(d)`` does not return ``None``
 
-Otherwise, *d* is naive.
+Otherwise, ``d`` is naive.
 
-A :class:`.time` object *t* is aware if both of the following hold:
+A :class:`.time` object ``t`` is aware if both of the following hold:
 
 1. ``t.tzinfo`` is not ``None``
 2. ``t.tzinfo.utcoffset(None)`` does not return ``None``.
 
-Otherwise, *t* is naive.
+Otherwise, ``t`` is naive.
 
 The distinction between aware and naive doesn't apply to :class:`timedelta`
 objects.
@@ -283,17 +283,37 @@ Class attributes:
 Note that, because of normalization, ``timedelta.max`` is greater than ``-timedelta.min``.
 ``-timedelta.max`` is not representable as a :class:`timedelta` object.
 
+
 Instance attributes (read-only):
 
-+------------------+--------------------------------------------+
-| Attribute        | Value                                      |
-+==================+============================================+
-| ``days``         | Between -999999999 and 999999999 inclusive |
-+------------------+--------------------------------------------+
-| ``seconds``      | Between 0 and 86399 inclusive              |
-+------------------+--------------------------------------------+
-| ``microseconds`` | Between 0 and 999999 inclusive             |
-+------------------+--------------------------------------------+
+.. attribute:: timedelta.days
+
+   Between -999,999,999 and 999,999,999 inclusive.
+
+
+.. attribute:: timedelta.seconds
+
+   Between 0 and 86,399 inclusive.
+
+   .. caution::
+
+      It is a somewhat common bug for code to unintentionally use this attribute
+      when it is actually intended to get a :meth:`~timedelta.total_seconds`
+      value instead:
+
+      .. doctest::
+
+         >>> from datetime import timedelta
+         >>> duration = timedelta(seconds=11235813)
+         >>> duration.days, duration.seconds
+         (130, 3813)
+         >>> duration.total_seconds()
+         11235813.0
+
+.. attribute:: timedelta.microseconds
+
+   Between 0 and 999,999 inclusive.
+
 
 Supported operations:
 
@@ -338,14 +358,14 @@ Supported operations:
 +--------------------------------+-----------------------------------------------+
 | ``q, r = divmod(t1, t2)``      | Computes the quotient and the remainder:      |
 |                                | ``q = t1 // t2`` (3) and ``r = t1 % t2``.     |
-|                                | q is an integer and r is a :class:`timedelta` |
-|                                | object.                                       |
+|                                | ``q`` is an integer and ``r`` is a            |
+|                                | :class:`timedelta` object.                    |
 +--------------------------------+-----------------------------------------------+
 | ``+t1``                        | Returns a :class:`timedelta` object with the  |
 |                                | same value. (2)                               |
 +--------------------------------+-----------------------------------------------+
 | ``-t1``                        | Equivalent to ``timedelta(-t1.days,           |
-|                                | -t1.seconds*, -t1.microseconds)``,            |
+|                                | -t1.seconds, -t1.microseconds)``,             |
 |                                | and to ``t1 * -1``. (1)(4)                    |
 +--------------------------------+-----------------------------------------------+
 | ``abs(t)``                     | Equivalent to ``+t`` when ``t.days >= 0``,    |
@@ -506,7 +526,7 @@ Other constructors, all class methods:
    January 1 of year 1 has ordinal 1.
 
    :exc:`ValueError` is raised unless ``1 <= ordinal <=
-   date.max.toordinal()``. For any date *d*,
+   date.max.toordinal()``. For any date ``d``,
    ``date.fromordinal(d.toordinal()) == d``.
 
 
@@ -677,7 +697,7 @@ Instance methods:
 .. method:: date.toordinal()
 
    Return the proleptic Gregorian ordinal of the date, where January 1 of year 1
-   has ordinal 1. For any :class:`date` object *d*,
+   has ordinal 1. For any :class:`date` object ``d``,
    ``date.fromordinal(d.toordinal()) == d``.
 
 
@@ -729,7 +749,7 @@ Instance methods:
 
 .. method:: date.__str__()
 
-   For a date *d*, ``str(d)`` is equivalent to ``d.isoformat()``.
+   For a date ``d``, ``str(d)`` is equivalent to ``d.isoformat()``.
 
 
 .. method:: date.ctime()
@@ -869,7 +889,7 @@ Other constructors, all class methods:
 
 .. classmethod:: datetime.today()
 
-   Return the current local datetime, with :attr:`.tzinfo` ``None``.
+   Return the current local date and time, with :attr:`.tzinfo` ``None``.
 
    Equivalent to::
 
@@ -895,6 +915,10 @@ Other constructors, all class methods:
 
    This function is preferred over :meth:`today` and :meth:`utcnow`.
 
+   .. note::
+
+      Subsequent calls to :meth:`!datetime.now` may return the same
+      instant depending on the precision of the underlying clock.
 
 .. classmethod:: datetime.utcnow()
 
@@ -1006,7 +1030,7 @@ Other constructors, all class methods:
    is used.  If the *date* argument is a :class:`.datetime` object, its time components
    and :attr:`.tzinfo` attributes are ignored.
 
-   For any :class:`.datetime` object *d*,
+   For any :class:`.datetime` object ``d``,
    ``d == datetime.combine(d.date(), d.time(), d.tzinfo)``.
 
    .. versionchanged:: 3.6
@@ -1053,7 +1077,7 @@ Other constructors, all class methods:
    .. versionadded:: 3.7
    .. versionchanged:: 3.11
       Previously, this method only supported formats that could be emitted by
-      :meth:`date.isoformat()` or :meth:`datetime.isoformat()`.
+      :meth:`date.isoformat` or :meth:`datetime.isoformat`.
 
 
 .. classmethod:: datetime.fromisocalendar(year, week, day)
@@ -1070,7 +1094,7 @@ Other constructors, all class methods:
    Return a :class:`.datetime` corresponding to *date_string*, parsed according to
    *format*.
 
-   If *format* does not contain microseconds or timezone information, this is equivalent to::
+   If *format* does not contain microseconds or time zone information, this is equivalent to::
 
      datetime(*(time.strptime(date_string, format)[0:6]))
 
@@ -1213,11 +1237,11 @@ Supported operations:
 
    If both are naive, or both are aware and have the same :attr:`~.datetime.tzinfo` attribute,
    the :attr:`~.datetime.tzinfo` attributes are ignored, and the result is a :class:`timedelta`
-   object *t* such that ``datetime2 + t == datetime1``. No time zone adjustments
+   object ``t`` such that ``datetime2 + t == datetime1``. No time zone adjustments
    are done in this case.
 
    If both are aware and have different :attr:`~.datetime.tzinfo` attributes, ``a-b`` acts
-   as if *a* and *b* were first converted to naive UTC datetimes. The
+   as if ``a`` and ``b`` were first converted to naive UTC datetimes. The
    result is ``(a.replace(tzinfo=None) - a.utcoffset()) - (b.replace(tzinfo=None)
    - b.utcoffset())`` except that the implementation never overflows.
 
@@ -1311,22 +1335,22 @@ Instance methods:
 
    If provided, *tz* must be an instance of a :class:`tzinfo` subclass, and its
    :meth:`utcoffset` and :meth:`dst` methods must not return ``None``. If *self*
-   is naive, it is presumed to represent time in the system timezone.
+   is naive, it is presumed to represent time in the system time zone.
 
    If called without arguments (or with ``tz=None``) the system local
-   timezone is assumed for the target timezone. The ``.tzinfo`` attribute of the converted
+   time zone is assumed for the target time zone. The ``.tzinfo`` attribute of the converted
    datetime instance will be set to an instance of :class:`timezone`
    with the zone name and offset obtained from the OS.
 
    If ``self.tzinfo`` is *tz*, ``self.astimezone(tz)`` is equal to *self*:  no
    adjustment of date or time data is performed. Else the result is local
-   time in the timezone *tz*, representing the same UTC time as *self*:  after
+   time in the time zone *tz*, representing the same UTC time as *self*:  after
    ``astz = dt.astimezone(tz)``, ``astz - astz.utcoffset()`` will have
    the same date and time data as ``dt - dt.utcoffset()``.
 
-   If you merely want to attach a time zone object *tz* to a datetime *dt* without
+   If you merely want to attach a :class:`timezone` object *tz* to a datetime *dt* without
    adjustment of date and time data, use ``dt.replace(tzinfo=tz)``. If you
-   merely want to remove the time zone object from an aware datetime *dt* without
+   merely want to remove the :class:`!timezone` object from an aware datetime *dt* without
    conversion of date and time data, use ``dt.replace(tzinfo=None)``.
 
    Note that the default :meth:`tzinfo.fromutc` method can be overridden in a
@@ -1336,7 +1360,7 @@ Instance methods:
       def astimezone(self, tz):
           if self.tzinfo is tz:
               return self
-          # Convert self to UTC, and attach the new time zone object.
+          # Convert self to UTC, and attach the new timezone object.
           utc = (self - self.utcoffset()).replace(tzinfo=tz)
           # Convert from UTC to tz's local time.
           return tz.fromutc(utc)
@@ -1397,11 +1421,11 @@ Instance methods:
 
 .. method:: datetime.utctimetuple()
 
-   If :class:`.datetime` instance *d* is naive, this is the same as
+   If :class:`.datetime` instance ``d`` is naive, this is the same as
    ``d.timetuple()`` except that :attr:`~.time.struct_time.tm_isdst` is forced to 0 regardless of what
    ``d.dst()`` returns. DST is never in effect for a UTC time.
 
-   If *d* is aware, *d* is normalized to UTC time, by subtracting
+   If ``d`` is aware, ``d`` is normalized to UTC time, by subtracting
    ``d.utcoffset()``, and a :class:`time.struct_time` for the
    normalized time is returned. :attr:`!tm_isdst` is forced to 0. Note
    that an :exc:`OverflowError` may be raised if ``d.year`` was
@@ -1450,7 +1474,7 @@ Instance methods:
 
       There is no method to obtain the POSIX timestamp directly from a
       naive :class:`.datetime` instance representing UTC time. If your
-      application uses this convention and your system timezone is not
+      application uses this convention and your system time zone is not
       set to UTC, you can obtain the POSIX timestamp by supplying
       ``tzinfo=timezone.utc``::
 
@@ -1549,7 +1573,7 @@ Instance methods:
 
 .. method:: datetime.__str__()
 
-   For a :class:`.datetime` instance *d*, ``str(d)`` is equivalent to
+   For a :class:`.datetime` instance ``d``, ``str(d)`` is equivalent to
    ``d.isoformat(' ')``.
 
 
@@ -1796,7 +1820,7 @@ Instance attributes (read-only):
    .. versionadded:: 3.6
 
 :class:`.time` objects support equality and order comparisons,
-where *a* is considered less than *b* when *a* precedes *b* in time.
+where ``a`` is considered less than ``b`` when ``a`` precedes ``b`` in time.
 
 Naive and aware :class:`!time` objects are never equal.
 Order comparison between naive and aware :class:`!time` objects raises
@@ -1861,7 +1885,7 @@ Other constructor:
    .. versionadded:: 3.7
    .. versionchanged:: 3.11
       Previously, this method only supported formats that could be emitted by
-      :meth:`time.isoformat()`.
+      :meth:`time.isoformat`.
 
 
 Instance methods:
@@ -1927,7 +1951,7 @@ Instance methods:
 
 .. method:: time.__str__()
 
-   For a time *t*, ``str(t)`` is equivalent to ``t.isoformat()``.
+   For a time ``t``, ``str(t)`` is equivalent to ``t.isoformat()``.
 
 
 .. method:: time.strftime(format)
@@ -2021,7 +2045,7 @@ Examples of working with a :class:`.time` object::
    supply implementations of the standard :class:`tzinfo` methods needed by the
    :class:`.datetime` methods you use. The :mod:`!datetime` module provides
    :class:`timezone`, a simple concrete subclass of :class:`tzinfo` which can
-   represent timezones with fixed offset from UTC such as UTC itself or North
+   represent time zones with fixed offset from UTC such as UTC itself or North
    American EST and EDT.
 
    Special requirement for pickling:  A :class:`tzinfo` subclass must have an
@@ -2146,14 +2170,14 @@ When a :class:`.datetime` object is passed in response to a :class:`.datetime`
 method, ``dt.tzinfo`` is the same object as *self*. :class:`tzinfo` methods can
 rely on this, unless user code calls :class:`tzinfo` methods directly. The
 intent is that the :class:`tzinfo` methods interpret *dt* as being in local
-time, and not need worry about objects in other timezones.
+time, and not need worry about objects in other time zones.
 
 There is one more :class:`tzinfo` method that a subclass may wish to override:
 
 
 .. method:: tzinfo.fromutc(dt)
 
-   This is called from the default :class:`datetime.astimezone()`
+   This is called from the default :meth:`datetime.astimezone`
    implementation. When called from that, ``dt.tzinfo`` is *self*, and *dt*'s
    date and time data are to be viewed as expressing a UTC time. The purpose
    of :meth:`fromutc` is to adjust the date and time data, returning an
@@ -2263,12 +2287,12 @@ only EST (fixed offset -5 hours), or only EDT (fixed offset -4 hours)).
     :mod:`zoneinfo`
       The :mod:`!datetime` module has a basic :class:`timezone` class (for
       handling arbitrary fixed offsets from UTC) and its :attr:`timezone.utc`
-      attribute (a UTC timezone instance).
+      attribute (a UTC :class:`!timezone` instance).
 
-      ``zoneinfo`` brings the *IANA timezone database* (also known as the Olson
+      ``zoneinfo`` brings the *IANA time zone database* (also known as the Olson
       database) to Python, and its usage is recommended.
 
-   `IANA timezone database <https://www.iana.org/time-zones>`_
+   `IANA time zone database <https://www.iana.org/time-zones>`_
       The Time Zone Database (often called tz, tzdata or zoneinfo) contains code
       and data that represent the history of local time for many representative
       locations around the globe. It is updated periodically to reflect changes
@@ -2282,10 +2306,10 @@ only EST (fixed offset -5 hours), or only EDT (fixed offset -4 hours)).
 -------------------------
 
 The :class:`timezone` class is a subclass of :class:`tzinfo`, each
-instance of which represents a timezone defined by a fixed offset from
+instance of which represents a time zone defined by a fixed offset from
 UTC.
 
-Objects of this class cannot be used to represent timezone information in the
+Objects of this class cannot be used to represent time zone information in the
 locations where different offsets are used in different days of the year or
 where historical changes have been made to civil time.
 
@@ -2346,7 +2370,7 @@ Class attributes:
 
 .. attribute:: timezone.utc
 
-   The UTC timezone, ``timezone(timedelta(0))``.
+   The UTC time zone, ``timezone(timedelta(0))``.
 
 
 .. index::
@@ -2555,7 +2579,7 @@ Using ``datetime.strptime(date_string, format)`` is equivalent to::
 
   datetime(*(time.strptime(date_string, format)[0:6]))
 
-except when the format includes sub-second components or timezone offset
+except when the format includes sub-second components or time zone offset
 information, which are supported in ``datetime.strptime`` but are discarded by
 ``time.strptime``.
 
diff --git a/Doc/library/dbm.rst b/Doc/library/dbm.rst
index 54627363ba76ae..6c659ea52ad821 100644
--- a/Doc/library/dbm.rst
+++ b/Doc/library/dbm.rst
@@ -1,5 +1,5 @@
-:mod:`dbm` --- Interfaces to Unix "databases"
-=============================================
+:mod:`!dbm` --- Interfaces to Unix "databases"
+==============================================
 
 .. module:: dbm
    :synopsis: Interfaces to various Unix "database" formats.
@@ -19,8 +19,6 @@ slow-but-simple implementation in module :mod:`dbm.dumb` will be used.  There
 is a `third party interface <https://www.jcea.es/programacion/pybsddb.htm>`_ to
 the Oracle Berkeley DB.
 
-.. include:: ../includes/wasm-ios-notavail.rst
-
 .. exception:: error
 
    A tuple containing the exceptions that can be raised by each of the supported
@@ -164,6 +162,8 @@ SQLite backend for the :mod:`dbm` module.
 The files created by :mod:`dbm.sqlite3` can thus be opened by :mod:`sqlite3`,
 or any other SQLite browser, including the SQLite CLI.
 
+.. include:: ../includes/wasm-notavail.rst
+
 .. function:: open(filename, /, flag="r", mode=0o666)
 
    Open an SQLite database.
@@ -207,6 +207,8 @@ functionality like crash tolerance.
    The file formats created by :mod:`dbm.gnu` and :mod:`dbm.ndbm` are incompatible
    and can not be used interchangeably.
 
+.. include:: ../includes/wasm-mobile-notavail.rst
+
 .. exception:: error
 
    Raised on :mod:`dbm.gnu`-specific errors, such as I/O errors. :exc:`KeyError` is
@@ -326,6 +328,8 @@ This module can be used with the "classic" NDBM interface or the
    when storing values larger than this limit. Reading such corrupted files can
    result in a hard crash (segmentation fault).
 
+.. include:: ../includes/wasm-mobile-notavail.rst
+
 .. exception:: error
 
    Raised on :mod:`dbm.ndbm`-specific errors, such as I/O errors. :exc:`KeyError` is raised
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst
index 3c51dbc04dc92e..f1bd3e8f371ee2 100644
--- a/Doc/library/decimal.rst
+++ b/Doc/library/decimal.rst
@@ -1,5 +1,5 @@
-:mod:`decimal` --- Decimal fixed point and floating point arithmetic
-====================================================================
+:mod:`!decimal` --- Decimal fixed-point and floating-point arithmetic
+=====================================================================
 
 .. module:: decimal
    :synopsis: Implementation of the General Decimal Arithmetic  Specification.
@@ -31,7 +31,7 @@
 --------------
 
 The :mod:`decimal` module provides support for fast correctly rounded
-decimal floating point arithmetic. It offers several advantages over the
+decimal floating-point arithmetic. It offers several advantages over the
 :class:`float` datatype:
 
 * Decimal "is based on a floating-point model which was designed with people
@@ -207,7 +207,7 @@ a decimal raises :class:`InvalidOperation`::
 .. versionchanged:: 3.3
 
 Decimals interact well with much of the rest of Python.  Here is a small decimal
-floating point flying circus:
+floating-point flying circus:
 
 .. doctest::
    :options: +NORMALIZE_WHITESPACE
@@ -373,7 +373,7 @@ Decimal objects
    digits, and an integer exponent. For example, ``Decimal((0, (1, 4, 1, 4), -3))``
    returns ``Decimal('1.414')``.
 
-   If *value* is a :class:`float`, the binary floating point value is losslessly
+   If *value* is a :class:`float`, the binary floating-point value is losslessly
    converted to its exact decimal equivalent.  This conversion can often require
    53 or more digits of precision.  For example, ``Decimal(float('1.1'))``
    converts to
@@ -403,7 +403,7 @@ Decimal objects
       Underscores are allowed for grouping, as with integral and floating-point
       literals in code.
 
-   Decimal floating point objects share many properties with the other built-in
+   Decimal floating-point objects share many properties with the other built-in
    numeric types such as :class:`float` and :class:`int`.  All of the usual math
    operations and special methods apply.  Likewise, decimal objects can be
    copied, pickled, printed, used as dictionary keys, used as set elements,
@@ -445,7 +445,7 @@ Decimal objects
       Mixed-type comparisons between :class:`Decimal` instances and other
       numeric types are now fully supported.
 
-   In addition to the standard numeric properties, decimal floating point
+   In addition to the standard numeric properties, decimal floating-point
    objects also have a number of specialized methods:
 
 
@@ -897,6 +897,48 @@ Decimal objects
       :const:`Rounded`.  If given, applies *rounding*; otherwise, uses the
       rounding method in either the supplied *context* or the current context.
 
+   Decimal numbers can be rounded using the :func:`.round` function:
+
+   .. describe:: round(number)
+   .. describe:: round(number, ndigits)
+
+      If *ndigits* is not given or ``None``,
+      returns the nearest :class:`int` to *number*,
+      rounding ties to even, and ignoring the rounding mode of the
+      :class:`Decimal` context.  Raises :exc:`OverflowError` if *number* is an
+      infinity or :exc:`ValueError` if it is a (quiet or signaling) NaN.
+
+      If *ndigits* is an :class:`int`, the context's rounding mode is respected
+      and a :class:`Decimal` representing *number* rounded to the nearest
+      multiple of ``Decimal('1E-ndigits')`` is returned; in this case,
+      ``round(number, ndigits)`` is equivalent to
+      ``self.quantize(Decimal('1E-ndigits'))``.  Returns ``Decimal('NaN')`` if
+      *number* is a quiet NaN.  Raises :class:`InvalidOperation` if *number*
+      is an infinity, a signaling NaN, or if the length of the coefficient after
+      the quantize operation would be greater than the current context's
+      precision.  In other words, for the non-corner cases:
+
+      * if *ndigits* is positive, return *number* rounded to *ndigits* decimal
+        places;
+      * if *ndigits* is zero, return *number* rounded to the nearest integer;
+      * if *ndigits* is negative, return *number* rounded to the nearest
+        multiple of ``10**abs(ndigits)``.
+
+      For example::
+
+          >>> from decimal import Decimal, getcontext, ROUND_DOWN
+          >>> getcontext().rounding = ROUND_DOWN
+          >>> round(Decimal('3.75'))     # context rounding ignored
+          4
+          >>> round(Decimal('3.5'))      # round-ties-to-even
+          4
+          >>> round(Decimal('3.75'), 0)  # uses the context rounding
+          Decimal('3')
+          >>> round(Decimal('3.75'), 1)
+          Decimal('3.7')
+          >>> round(Decimal('3.75'), -1)
+          Decimal('0E+1')
+
 
 .. _logical_operands_label:
 
@@ -974,7 +1016,7 @@ New contexts can also be created using the :class:`Context` constructor
 described below. In addition, the module provides three pre-made contexts:
 
 
-.. class:: BasicContext
+.. data:: BasicContext
 
    This is a standard context defined by the General Decimal Arithmetic
    Specification.  Precision is set to nine.  Rounding is set to
@@ -985,7 +1027,7 @@ described below. In addition, the module provides three pre-made contexts:
    Because many of the traps are enabled, this context is useful for debugging.
 
 
-.. class:: ExtendedContext
+.. data:: ExtendedContext
 
    This is a standard context defined by the General Decimal Arithmetic
    Specification.  Precision is set to nine.  Rounding is set to
@@ -998,7 +1040,7 @@ described below. In addition, the module provides three pre-made contexts:
    presence of conditions that would otherwise halt the program.
 
 
-.. class:: DefaultContext
+.. data:: DefaultContext
 
    This context is used by the :class:`Context` constructor as a prototype for new
    contexts.  Changing a field (such a precision) has the effect of changing the
@@ -1699,7 +1741,7 @@ The following table summarizes the hierarchy of signals::
 
 .. _decimal-notes:
 
-Floating Point Notes
+Floating-Point Notes
 --------------------
 
 
@@ -1712,7 +1754,7 @@ can still incur round-off error when non-zero digits exceed the fixed precision.
 
 The effects of round-off error can be amplified by the addition or subtraction
 of nearly offsetting quantities resulting in loss of significance.  Knuth
-provides two instructive examples where rounded floating point arithmetic with
+provides two instructive examples where rounded floating-point arithmetic with
 insufficient precision causes the breakdown of the associative and distributive
 properties of addition:
 
@@ -1802,7 +1844,7 @@ treated as equal and their sign is informational.
 In addition to the two signed zeros which are distinct yet equal, there are
 various representations of zero with differing precisions yet equivalent in
 value.  This takes a bit of getting used to.  For an eye accustomed to
-normalized floating point representations, it is not immediately obvious that
+normalized floating-point representations, it is not immediately obvious that
 the following calculation returns a value equal to zero:
 
    >>> 1 / Decimal('Infinity')
@@ -2129,7 +2171,7 @@ value unchanged:
 
 Q. Is there a way to convert a regular float to a :class:`Decimal`?
 
-A. Yes, any binary floating point number can be exactly expressed as a
+A. Yes, any binary floating-point number can be exactly expressed as a
 Decimal though an exact conversion may take more precision than intuition would
 suggest:
 
@@ -2183,7 +2225,7 @@ Q. Is the CPython implementation fast for large numbers?
 A. Yes.  In the CPython and PyPy3 implementations, the C/CFFI versions of
 the decimal module integrate the high speed `libmpdec
 <https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html>`_ library for
-arbitrary precision correctly rounded decimal floating point arithmetic [#]_.
+arbitrary precision correctly rounded decimal floating-point arithmetic [#]_.
 ``libmpdec`` uses `Karatsuba multiplication
 <https://en.wikipedia.org/wiki/Karatsuba_algorithm>`_
 for medium-sized numbers and the `Number Theoretic Transform
diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index 6a34f2e4d7f5e1..ce948a6860f02c 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -1,5 +1,5 @@
-:mod:`difflib` --- Helpers for computing deltas
-===============================================
+:mod:`!difflib` --- Helpers for computing deltas
+================================================
 
 .. module:: difflib
    :synopsis: Helpers for computing differences between objects.
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index e255fad55e4a25..cbf4367622fb6d 100644
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -1,5 +1,5 @@
-:mod:`dis` --- Disassembler for Python bytecode
-===============================================
+:mod:`!dis` --- Disassembler for Python bytecode
+================================================
 
 .. module:: dis
    :synopsis: Disassembler for Python bytecode.
@@ -336,9 +336,10 @@ operation is being performed, so the intermediate analysis object isn't useful:
       Added the *show_caches* and *adaptive* parameters.
 
    .. versionchanged:: 3.13
-      The *show_caches* parameter is deprecated and has no effect. The *cache_info*
-      field of each instruction is populated regardless of its value.
-
+      The *show_caches* parameter is deprecated and has no effect. The iterator
+      generates the :class:`Instruction` instances with the *cache_info*
+      field populated (regardless of the value of *show_caches*) and it no longer
+      generates separate items for the cache entries.
 
 .. function:: findlinestarts(code)
 
@@ -956,7 +957,8 @@ iterations of the loop.
 
 .. opcode:: GET_LEN
 
-   Perform ``STACK.append(len(STACK[-1]))``.
+   Perform ``STACK.append(len(STACK[-1]))``. Used in :keyword:`match` statements where
+   comparison with structure of pattern is needed.
 
    .. versionadded:: 3.10
 
@@ -1101,11 +1103,15 @@ iterations of the loop.
 .. opcode:: BUILD_TUPLE (count)
 
    Creates a tuple consuming *count* items from the stack, and pushes the
-   resulting tuple onto the stack.::
+   resulting tuple onto the stack::
+
+      if count == 0:
+          value = ()
+      else:
+          value = tuple(STACK[-count:])
+          STACK = STACK[:-count]
 
-      assert count > 0
-      STACK, values = STACK[:-count], STACK[-count:]
-      STACK.append(tuple(values))
+      STACK.append(value)
 
 
 .. opcode:: BUILD_LIST (count)
@@ -1377,6 +1383,13 @@ iterations of the loop.
       This opcode is now only used in situations where the local variable is
       guaranteed to be initialized. It cannot raise :exc:`UnboundLocalError`.
 
+.. opcode:: LOAD_FAST_LOAD_FAST (var_nums)
+
+   Pushes references to ``co_varnames[var_nums >> 4]`` and
+   ``co_varnames[var_nums & 15]`` onto the stack.
+
+   .. versionadded:: 3.13
+
 .. opcode:: LOAD_FAST_CHECK (var_num)
 
    Pushes a reference to the local ``co_varnames[var_num]`` onto the stack,
@@ -1397,6 +1410,20 @@ iterations of the loop.
 
    Stores ``STACK.pop()`` into the local ``co_varnames[var_num]``.
 
+.. opcode:: STORE_FAST_STORE_FAST (var_nums)
+
+   Stores ``STACK[-1]`` into ``co_varnames[var_nums >> 4]``
+   and ``STACK[-2]`` into ``co_varnames[var_nums & 15]``.
+
+   .. versionadded:: 3.13
+
+.. opcode:: STORE_FAST_LOAD_FAST (var_nums)
+
+   Stores ``STACK.pop()`` into the local ``co_varnames[var_nums >> 4]``
+   and pushes a reference to the local ``co_varnames[var_nums & 15]``
+   onto the stack.
+
+   .. versionadded:: 3.13
 
 .. opcode:: DELETE_FAST (var_num)
 
@@ -1426,7 +1453,7 @@ iterations of the loop.
    slot ``i`` of the "fast locals" storage in this mapping.
    If the name is not found there, loads it from the cell contained in
    slot ``i``, similar to :opcode:`LOAD_DEREF`. This is used for loading
-   free variables in class bodies (which previously used
+   :term:`closure variables <closure variable>` in class bodies (which previously used
    :opcode:`!LOAD_CLASSDEREF`) and in
    :ref:`annotation scopes <annotation-scopes>` within class bodies.
 
@@ -1455,8 +1482,8 @@ iterations of the loop.
 
 .. opcode:: COPY_FREE_VARS (n)
 
-   Copies the ``n`` free variables from the closure into the frame.
-   Removes the need for special code on the caller's side when calling
+   Copies the ``n`` :term:`free (closure) variables <closure variable>` from the closure
+   into the frame. Removes the need for special code on the caller's side when calling
    closures.
 
    .. versionadded:: 3.11
@@ -1544,7 +1571,7 @@ iterations of the loop.
 
 .. opcode:: MAKE_FUNCTION
 
-   Pushes a new function object on the stack built from the code object at ``STACK[1]``.
+   Pushes a new function object on the stack built from the code object at ``STACK[-1]``.
 
    .. versionchanged:: 3.10
       Flag value ``0x04`` is a tuple of strings instead of dictionary
@@ -1580,7 +1607,7 @@ iterations of the loop.
 
       end = STACK.pop()
       start = STACK.pop()
-      STACK.append(slice(start, stop))
+      STACK.append(slice(start, end))
 
    if it is 3, implements::
 
@@ -1629,7 +1656,7 @@ iterations of the loop.
 
    .. versionadded:: 3.13
 
-.. opcode:: FORMAT_SPEC
+.. opcode:: FORMAT_WITH_SPEC
 
    Formats the given value with the given format spec::
 
@@ -1747,7 +1774,7 @@ iterations of the loop.
    | ``INTRINSIC_STOPITERATION_ERROR`` | Extracts the return value from a  |
    |                                   | ``StopIteration`` exception.      |
    +-----------------------------------+-----------------------------------+
-   | ``INTRINSIC_ASYNC_GEN_WRAP``      | Wraps an aync generator value     |
+   | ``INTRINSIC_ASYNC_GEN_WRAP``      | Wraps an async generator value    |
    +-----------------------------------+-----------------------------------+
    | ``INTRINSIC_UNARY_POSITIVE``      | Performs the unary ``+``          |
    |                                   | operation                         |
@@ -1912,10 +1939,10 @@ instructions:
 
 .. data:: hasfree
 
-   Sequence of bytecodes that access a free variable. 'free' in this
-   context refers to names in the current scope that are referenced by inner
-   scopes or names in outer scopes that are referenced from this scope.  It does
-   *not* include references to global or builtin scopes.
+   Sequence of bytecodes that access a :term:`free (closure) variable <closure variable>`.
+   'free' in this context refers to names in the current scope that are
+   referenced by inner scopes or names in outer scopes that are referenced
+   from this scope.  It does *not* include references to global or builtin scopes.
 
 
 .. data:: hasname
diff --git a/Doc/library/distutils.rst b/Doc/library/distutils.rst
new file mode 100644
index 00000000000000..af63e035bf3c4a
--- /dev/null
+++ b/Doc/library/distutils.rst
@@ -0,0 +1,17 @@
+:mod:`!distutils` --- Building and installing Python modules
+============================================================
+
+.. module:: distutils
+   :synopsis: Removed in 3.12.
+   :deprecated:
+
+.. deprecated-removed:: 3.10 3.12
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.12 <whatsnew312-removed-distutils>` after
+being deprecated in Python 3.10.  The removal was decided in :pep:`632`,
+which has `migration advice
+<https://peps.python.org/pep-0632/#migration-advice>`_.
+
+The last version of Python that provided the :mod:`!distutils` module was
+`Python 3.11 <https://docs.python.org/3.11/library/distutils.html>`_.
diff --git a/Doc/library/doctest.rst b/Doc/library/doctest.rst
index 5f7d10a6dce037..6b0282eed49566 100644
--- a/Doc/library/doctest.rst
+++ b/Doc/library/doctest.rst
@@ -1,5 +1,5 @@
-:mod:`doctest` --- Test interactive Python examples
-===================================================
+:mod:`!doctest` --- Test interactive Python examples
+====================================================
 
 .. module:: doctest
    :synopsis: Test pieces of code within docstrings.
diff --git a/Doc/library/email.charset.rst b/Doc/library/email.charset.rst
index aa0134412f3a60..6875af2be49d7a 100644
--- a/Doc/library/email.charset.rst
+++ b/Doc/library/email.charset.rst
@@ -1,5 +1,5 @@
-:mod:`email.charset`: Representing character sets
--------------------------------------------------
+:mod:`!email.charset`: Representing character sets
+--------------------------------------------------
 
 .. module:: email.charset
    :synopsis: Character Sets
diff --git a/Doc/library/email.compat32-message.rst b/Doc/library/email.compat32-message.rst
index c4c322a82e1f44..4285c436e8da80 100644
--- a/Doc/library/email.compat32-message.rst
+++ b/Doc/library/email.compat32-message.rst
@@ -7,6 +7,7 @@
    :synopsis: The base class representing email messages in a fashion
               backward compatible with Python 3.2
    :noindex:
+   :no-index:
 
 
 The :class:`Message` class is very similar to the
@@ -104,7 +105,7 @@ Here are the methods of the :class:`Message` class:
 
    .. method:: __str__()
 
-      Equivalent to :meth:`.as_string()`.  Allows ``str(msg)`` to produce a
+      Equivalent to :meth:`.as_string`.  Allows ``str(msg)`` to produce a
       string containing the formatted message.
 
 
@@ -142,7 +143,7 @@ Here are the methods of the :class:`Message` class:
 
    .. method:: __bytes__()
 
-      Equivalent to :meth:`.as_bytes()`.  Allows ``bytes(msg)`` to produce a
+      Equivalent to :meth:`.as_bytes`.  Allows ``bytes(msg)`` to produce a
       bytes object containing the formatted message.
 
       .. versionadded:: 3.4
diff --git a/Doc/library/email.contentmanager.rst b/Doc/library/email.contentmanager.rst
index 5b49339650f0e9..b33fe82a6e4c9f 100644
--- a/Doc/library/email.contentmanager.rst
+++ b/Doc/library/email.contentmanager.rst
@@ -1,5 +1,5 @@
-:mod:`email.contentmanager`: Managing MIME Content
---------------------------------------------------
+:mod:`!email.contentmanager`: Managing MIME Content
+---------------------------------------------------
 
 .. module:: email.contentmanager
    :synopsis: Storing and Retrieving Content from MIME Parts
@@ -58,11 +58,12 @@
       * the type itself (``typ``)
       * the type's fully qualified name (``typ.__module__ + '.' +
         typ.__qualname__``).
-      * the type's qualname (``typ.__qualname__``)
-      * the type's name (``typ.__name__``).
+      * the type's :attr:`qualname <type.__qualname__>` (``typ.__qualname__``)
+      * the type's :attr:`name <type.__name__>` (``typ.__name__``).
 
       If none of the above match, repeat all of the checks above for each of
-      the types in the :term:`MRO` (``typ.__mro__``).  Finally, if no other key
+      the types in the :term:`MRO` (:attr:`typ.__mro__ <type.__mro__>`).
+      Finally, if no other key
       yields a handler, check for a handler for the key ``None``.  If there is
       no handler for ``None``, raise a :exc:`KeyError` for the fully
       qualified name of the type.
@@ -156,7 +157,13 @@ Currently the email package provides only one concrete content manager,
        :exc:`ValueError`.
 
        * For ``str`` objects, if *cte* is not set use heuristics to
-         determine the most compact encoding.
+         determine the most compact encoding.  Prior to encoding,
+         :meth:`str.splitlines` is used to normalize all line boundaries,
+         ensuring that each line of the payload is terminated by the
+         current policy's :data:`~email.policy.Policy.linesep` property
+         (even if the original string did not end with one).
+       * For ``bytes`` objects, *cte* is taken to be base64 if not set,
+         and the aforementioned newline translation is not performed.
        * For :class:`~email.message.EmailMessage`, per :rfc:`2046`, raise
          an error if a *cte* of ``quoted-printable`` or ``base64`` is
          requested for *subtype* ``rfc822``, and for any *cte* other than
diff --git a/Doc/library/email.encoders.rst b/Doc/library/email.encoders.rst
index 3bd377e33f6c15..9c8c8c9234ed7a 100644
--- a/Doc/library/email.encoders.rst
+++ b/Doc/library/email.encoders.rst
@@ -1,5 +1,5 @@
-:mod:`email.encoders`: Encoders
--------------------------------
+:mod:`!email.encoders`: Encoders
+--------------------------------
 
 .. module:: email.encoders
    :synopsis: Encoders for email message payloads.
diff --git a/Doc/library/email.errors.rst b/Doc/library/email.errors.rst
index 56aea6598b8615..f8f43d82a3df2e 100644
--- a/Doc/library/email.errors.rst
+++ b/Doc/library/email.errors.rst
@@ -1,5 +1,5 @@
-:mod:`email.errors`: Exception and Defect classes
--------------------------------------------------
+:mod:`!email.errors`: Exception and Defect classes
+--------------------------------------------------
 
 .. module:: email.errors
    :synopsis: The exception classes used by the email package.
@@ -58,6 +58,13 @@ The following exception classes are defined in the :mod:`email.errors` module:
    :class:`~email.mime.nonmultipart.MIMENonMultipart` (e.g.
    :class:`~email.mime.image.MIMEImage`).
 
+
+.. exception:: HeaderWriteError()
+
+   Raised when an error occurs when the :mod:`~email.generator` outputs
+   headers.
+
+
 .. exception:: MessageDefect()
 
    This is the base class for all defects found when parsing email messages.
diff --git a/Doc/library/email.generator.rst b/Doc/library/email.generator.rst
index afa0038ea2d6c4..a3132d02687bc9 100644
--- a/Doc/library/email.generator.rst
+++ b/Doc/library/email.generator.rst
@@ -1,5 +1,5 @@
-:mod:`email.generator`: Generating MIME documents
--------------------------------------------------
+:mod:`!email.generator`: Generating MIME documents
+--------------------------------------------------
 
 .. module:: email.generator
    :synopsis: Generate flat text email messages from a message structure.
diff --git a/Doc/library/email.header.rst b/Doc/library/email.header.rst
index e093f138936b36..219fad0d2f6745 100644
--- a/Doc/library/email.header.rst
+++ b/Doc/library/email.header.rst
@@ -1,5 +1,5 @@
-:mod:`email.header`: Internationalized headers
-----------------------------------------------
+:mod:`!email.header`: Internationalized headers
+-----------------------------------------------
 
 .. module:: email.header
    :synopsis: Representing non-ASCII headers
@@ -77,7 +77,7 @@ Here is the :class:`Header` class description:
    The maximum line length can be specified explicitly via *maxlinelen*.  For
    splitting the first line to a shorter value (to account for the field header
    which isn't included in *s*, e.g. :mailheader:`Subject`) pass in the name of the
-   field in *header_name*.  The default *maxlinelen* is 76, and the default value
+   field in *header_name*.  The default *maxlinelen* is 78, and the default value
    for *header_name* is ``None``, meaning it is not taken into account for the
    first line of a long, split header.
 
diff --git a/Doc/library/email.headerregistry.rst b/Doc/library/email.headerregistry.rst
index 00a954e0307ea6..7f8044932fae99 100644
--- a/Doc/library/email.headerregistry.rst
+++ b/Doc/library/email.headerregistry.rst
@@ -1,5 +1,5 @@
-:mod:`email.headerregistry`: Custom Header Objects
---------------------------------------------------
+:mod:`!email.headerregistry`: Custom Header Objects
+---------------------------------------------------
 
 .. module:: email.headerregistry
    :synopsis: Automatic Parsing of headers based on the field name
@@ -317,7 +317,7 @@ variant, :attr:`~.BaseHeader.max_count` is set to 1.
     class.  When *use_default_map* is ``True`` (the default), the standard
     mapping of header names to classes is copied in to the registry during
     initialization.  *base_class* is always the last class in the generated
-    class's ``__bases__`` list.
+    class's :class:`~type.__bases__` list.
 
     The default mappings are:
 
diff --git a/Doc/library/email.iterators.rst b/Doc/library/email.iterators.rst
index d53ab33b8904a7..090981d84b4de3 100644
--- a/Doc/library/email.iterators.rst
+++ b/Doc/library/email.iterators.rst
@@ -1,5 +1,5 @@
-:mod:`email.iterators`: Iterators
----------------------------------
+:mod:`!email.iterators`: Iterators
+----------------------------------
 
 .. module:: email.iterators
    :synopsis: Iterate over a  message object tree.
diff --git a/Doc/library/email.message.rst b/Doc/library/email.message.rst
index adea067e082615..71d6e321f387bc 100644
--- a/Doc/library/email.message.rst
+++ b/Doc/library/email.message.rst
@@ -1,5 +1,5 @@
-:mod:`email.message`: Representing an email message
----------------------------------------------------
+:mod:`!email.message`: Representing an email message
+----------------------------------------------------
 
 .. module:: email.message
    :synopsis: The base class representing email messages.
@@ -41,7 +41,7 @@ The :class:`EmailMessage` dictionary-like interface is indexed by the header
 names, which must be ASCII values.  The values of the dictionary are strings
 with some extra methods.  Headers are stored and returned in case-preserving
 form, but field names are matched case-insensitively.  The keys are ordered,
-but unlike a real dict, there can be duplicates.  Addtional methods are
+but unlike a real dict, there can be duplicates.  Additional methods are
 provided for working with headers that have duplicate keys.
 
 The *payload* is either a string or bytes object, in the case of simple message
@@ -124,7 +124,7 @@ message objects.
 
    .. method:: __bytes__()
 
-      Equivalent to :meth:`.as_bytes()`.  Allows ``bytes(msg)`` to produce a
+      Equivalent to :meth:`.as_bytes`.  Allows ``bytes(msg)`` to produce a
       bytes object containing the serialized message.
 
 
diff --git a/Doc/library/email.mime.rst b/Doc/library/email.mime.rst
index dc0dd3b9eebde6..b85673a4acd0d0 100644
--- a/Doc/library/email.mime.rst
+++ b/Doc/library/email.mime.rst
@@ -1,5 +1,5 @@
-:mod:`email.mime`: Creating email and MIME objects from scratch
----------------------------------------------------------------
+:mod:`!email.mime`: Creating email and MIME objects from scratch
+----------------------------------------------------------------
 
 .. module:: email.mime
    :synopsis: Build MIME messages.
diff --git a/Doc/library/email.parser.rst b/Doc/library/email.parser.rst
index dda0466a6afa7d..439b5c8f34b65a 100644
--- a/Doc/library/email.parser.rst
+++ b/Doc/library/email.parser.rst
@@ -1,5 +1,5 @@
-:mod:`email.parser`: Parsing email messages
--------------------------------------------
+:mod:`!email.parser`: Parsing email messages
+--------------------------------------------
 
 .. module:: email.parser
    :synopsis: Parse flat text email messages to produce a message object structure.
diff --git a/Doc/library/email.policy.rst b/Doc/library/email.policy.rst
index f4777bb2462138..6b997ee784f6e4 100644
--- a/Doc/library/email.policy.rst
+++ b/Doc/library/email.policy.rst
@@ -1,5 +1,5 @@
-:mod:`email.policy`: Policy Objects
------------------------------------
+:mod:`!email.policy`: Policy Objects
+------------------------------------
 
 .. module:: email.policy
    :synopsis: Controlling the parsing and generating of messages
@@ -229,6 +229,24 @@ added matters.  To illustrate::
 
       .. versionadded:: 3.6
 
+
+   .. attribute:: verify_generated_headers
+
+      If ``True`` (the default), the generator will raise
+      :exc:`~email.errors.HeaderWriteError` instead of writing a header
+      that is improperly folded or delimited, such that it would
+      be parsed as multiple headers or joined with adjacent data.
+      Such headers can be generated by custom header classes or bugs
+      in the ``email`` module.
+
+      As it's a security feature, this defaults to ``True`` even in the
+      :class:`~email.policy.Compat32` policy.
+      For backwards compatible, but unsafe, behavior, it must be set to
+      ``False`` explicitly.
+
+      .. versionadded:: 3.13
+
+
    The following :class:`Policy` method is intended to be called by code using
    the email library to create policy instances with custom settings:
 
@@ -249,7 +267,7 @@ added matters.  To illustrate::
 
       Handle a *defect* found on *obj*.  When the email package calls this
       method, *defect* will always be a subclass of
-      :class:`~email.errors.Defect`.
+      :class:`~email.errors.MessageDefect`.
 
       The default implementation checks the :attr:`raise_on_defect` flag.  If
       it is ``True``, *defect* is raised as an exception.  If it is ``False``
@@ -259,7 +277,7 @@ added matters.  To illustrate::
    .. method:: register_defect(obj, defect)
 
       Register a *defect* on *obj*.  In the email package, *defect* will always
-      be a subclass of :class:`~email.errors.Defect`.
+      be a subclass of :class:`~email.errors.MessageDefect`.
 
       The default implementation calls the ``append`` method of the ``defects``
       attribute of *obj*.  When the email package calls :attr:`handle_defect`,
diff --git a/Doc/library/email.rst b/Doc/library/email.rst
index 3a6039004fcaae..66c42e4a5008ee 100644
--- a/Doc/library/email.rst
+++ b/Doc/library/email.rst
@@ -1,5 +1,5 @@
-:mod:`email` --- An email and MIME handling package
-===================================================
+:mod:`!email` --- An email and MIME handling package
+====================================================
 
 .. module:: email
    :synopsis: Package supporting the parsing, manipulating, and generating
diff --git a/Doc/library/email.utils.rst b/Doc/library/email.utils.rst
index d693a9bc3933b5..6bd45200d86863 100644
--- a/Doc/library/email.utils.rst
+++ b/Doc/library/email.utils.rst
@@ -1,5 +1,5 @@
-:mod:`email.utils`: Miscellaneous utilities
--------------------------------------------
+:mod:`!email.utils`: Miscellaneous utilities
+--------------------------------------------
 
 .. module:: email.utils
    :synopsis: Miscellaneous email package utilities.
@@ -159,7 +159,7 @@ of the new API.
 
       Fri, 09 Nov 2001 01:08:47 -0000
 
-   Optional *timeval* if given is a floating point time value as accepted by
+   Optional *timeval* if given is a floating-point time value as accepted by
    :func:`time.gmtime` and :func:`time.localtime`, otherwise the current time is
    used.
 
diff --git a/Doc/library/ensurepip.rst b/Doc/library/ensurepip.rst
index 168e45cfd6fc90..8dfb7ad9c95c3e 100644
--- a/Doc/library/ensurepip.rst
+++ b/Doc/library/ensurepip.rst
@@ -1,5 +1,5 @@
-:mod:`ensurepip` --- Bootstrapping the ``pip`` installer
-========================================================
+:mod:`!ensurepip` --- Bootstrapping the ``pip`` installer
+=========================================================
 
 .. module:: ensurepip
    :synopsis: Bootstrapping the "pip" installer into an existing Python
@@ -38,7 +38,7 @@ when creating a virtual environment) or after explicitly uninstalling
    :pep:`453`: Explicit bootstrapping of pip in Python installations
       The original rationale and specification for this module.
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 Command line interface
 ----------------------
diff --git a/Doc/library/enum.rst b/Doc/library/enum.rst
index 21f41b73086c98..24c0cf26496fed 100644
--- a/Doc/library/enum.rst
+++ b/Doc/library/enum.rst
@@ -1,5 +1,5 @@
-:mod:`enum` --- Support for enumerations
-========================================
+:mod:`!enum` --- Support for enumerations
+=========================================
 
 .. module:: enum
    :synopsis: Implementation of an enumeration class.
@@ -44,7 +44,7 @@ using function-call syntax::
    ...     BLUE = 3
 
    >>> # functional syntax
-   >>> Color = Enum('Color', ['RED', 'GREEN', 'BLUE'])
+   >>> Color = Enum('Color', [('RED', 1), ('GREEN', 2), ('BLUE', 3)])
 
 Even though we can use :keyword:`class` syntax to create Enums, Enums
 are not normal Python classes.  See
@@ -110,6 +110,10 @@ Module Contents
       ``KEEP`` which allows for more fine-grained control over how invalid values
       are dealt with in an enumeration.
 
+   :class:`EnumDict`
+
+      A subclass of :class:`dict` for use when subclassing :class:`EnumType`.
+
    :class:`auto`
 
       Instances are replaced with an appropriate value for Enum members.
@@ -152,6 +156,7 @@ Module Contents
 
 .. versionadded:: 3.6  ``Flag``, ``IntFlag``, ``auto``
 .. versionadded:: 3.11  ``StrEnum``, ``EnumCheck``, ``ReprEnum``, ``FlagBoundary``, ``property``, ``member``, ``nonmember``, ``global_enum``, ``show_flag_values``
+.. versionadded:: 3.13  ``EnumDict``
 
 ---------------
 
@@ -527,7 +532,7 @@ Data Types
 
    ``Flag`` is the same as :class:`Enum`, but its members support the bitwise
    operators ``&`` (*AND*), ``|`` (*OR*), ``^`` (*XOR*), and ``~`` (*INVERT*);
-   the results of those operators are members of the enumeration.
+   the results of those operations are (aliases of) members of the enumeration.
 
    .. method:: __contains__(self, value)
 
@@ -570,6 +575,8 @@ Data Types
          >>> len(white)
          3
 
+      .. versionadded:: 3.11
+
    .. method:: __bool__(self):
 
       Returns *True* if any members in flag, *False* otherwise::
@@ -661,7 +668,7 @@ Data Types
    * the result is a valid *IntFlag*: an *IntFlag* is returned
    * the result is not a valid *IntFlag*: the result depends on the :class:`FlagBoundary` setting
 
-   The :func:`repr()` of unnamed zero-valued flags has changed.  It is now:
+   The :func:`repr` of unnamed zero-valued flags has changed.  It is now:
 
       >>> Color(0)
       <Color: 0>
@@ -819,7 +826,27 @@ Data Types
          >>> KeepFlag(2**2 + 2**4)
          <KeepFlag.BLUE|16: 20>
 
-.. versionadded:: 3.11
+   .. versionadded:: 3.11
+
+.. class:: EnumDict
+
+   *EnumDict* is a subclass of :class:`dict` that is used as the namespace
+   for defining enum classes (see :ref:`prepare`).
+   It is exposed to allow subclasses of :class:`EnumType` with advanced
+   behavior like having multiple values per member.
+   It should be called with the name of the enum class being created, otherwise
+   private names and internal classes will not be handled correctly.
+
+   Note that only the :class:`~collections.abc.MutableMapping` interface
+   (:meth:`~object.__setitem__` and :meth:`~dict.update`) is overridden.
+   It may be possible to bypass the checks using other :class:`!dict`
+   operations like :meth:`|= <object.__ior__>`.
+
+   .. attribute:: EnumDict.member_names
+
+      A list of member names.
+
+   .. versionadded:: 3.13
 
 ---------------
 
@@ -964,7 +991,6 @@ Utilities and Decorators
    Should only be used when the enum members are exported
    to the module global namespace (see :class:`re.RegexFlag` for an example).
 
-
    .. versionadded:: 3.11
 
 .. function:: show_flag_values(value)
@@ -973,6 +999,7 @@ Utilities and Decorators
 
    .. versionadded:: 3.11
 
+
 ---------------
 
 Notes
diff --git a/Doc/library/errno.rst b/Doc/library/errno.rst
index 283e8b013265d9..ffebe8ee485eb6 100644
--- a/Doc/library/errno.rst
+++ b/Doc/library/errno.rst
@@ -1,5 +1,5 @@
-:mod:`errno` --- Standard errno system symbols
-==============================================
+:mod:`!errno` --- Standard errno system symbols
+===============================================
 
 .. module:: errno
    :synopsis: Standard errno system symbols.
@@ -665,6 +665,171 @@ defined by the module.  The specific list of defined symbols is available as
 
    .. versionadded:: 3.11
 
+
+.. data:: ENOMEDIUM
+
+   No medium found
+
+
+.. data:: EMEDIUMTYPE
+
+   Wrong medium type
+
+
+.. data:: ENOKEY
+
+   Required key not available
+
+
+.. data:: EKEYEXPIRED
+
+   Key has expired
+
+
+.. data:: EKEYREVOKED
+
+   Key has been revoked
+
+
+.. data:: EKEYREJECTED
+
+   Key was rejected by service
+
+
+.. data:: ERFKILL
+
+   Operation not possible due to RF-kill
+
+
+.. data:: ELOCKUNMAPPED
+
+   Locked lock was unmapped
+
+
+.. data:: ENOTACTIVE
+
+   Facility is not active
+
+
+.. data:: EAUTH
+
+   Authentication error
+
+   .. versionadded:: 3.2
+
+
+.. data:: EBADARCH
+
+   Bad CPU type in executable
+
+   .. versionadded:: 3.2
+
+
+.. data:: EBADEXEC
+
+   Bad executable (or shared library)
+
+   .. versionadded:: 3.2
+
+
+.. data:: EBADMACHO
+
+   Malformed Mach-o file
+
+   .. versionadded:: 3.2
+
+
+.. data:: EDEVERR
+
+   Device error
+
+   .. versionadded:: 3.2
+
+
+.. data:: EFTYPE
+
+   Inappropriate file type or format
+
+   .. versionadded:: 3.2
+
+
+.. data:: ENEEDAUTH
+
+   Need authenticator
+
+   .. versionadded:: 3.2
+
+
+.. data:: ENOATTR
+
+   Attribute not found
+
+   .. versionadded:: 3.2
+
+
+.. data:: ENOPOLICY
+
+   Policy not found
+
+   .. versionadded:: 3.2
+
+
+.. data:: EPROCLIM
+
+   Too many processes
+
+   .. versionadded:: 3.2
+
+
+.. data:: EPROCUNAVAIL
+
+   Bad procedure for program
+
+   .. versionadded:: 3.2
+
+
+.. data:: EPROGMISMATCH
+
+   Program version wrong
+
+   .. versionadded:: 3.2
+
+
+.. data:: EPROGUNAVAIL
+
+   RPC prog. not avail
+
+   .. versionadded:: 3.2
+
+
+.. data:: EPWROFF
+
+   Device power is off
+
+   .. versionadded:: 3.2
+
+
+.. data:: EBADRPC
+
+   RPC struct is bad
+
+   .. versionadded:: 3.2
+
+
+.. data:: ERPCMISMATCH
+
+   RPC version wrong
+
+   .. versionadded:: 3.2
+
+
+.. data:: ESHLIBVERS
+
+   Shared library version mismatch
+
+   .. versionadded:: 3.2
+
+
 .. data:: ENOTCAPABLE
 
    Capabilities insufficient. This error is mapped to the exception
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 7879fb015bddfa..b5ba86f1b19223 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -412,8 +412,8 @@ The following exceptions are the exceptions that are usually raised.
    represented.  This cannot occur for integers (which would rather raise
    :exc:`MemoryError` than give up).  However, for historical reasons,
    OverflowError is sometimes raised for integers that are outside a required
-   range.   Because of the lack of standardization of floating point exception
-   handling in C, most floating point operations are not checked.
+   range.   Because of the lack of standardization of floating-point exception
+   handling in C, most floating-point operations are not checked.
 
 
 .. exception:: PythonFinalizationError
@@ -989,7 +989,8 @@ their subgroups based on the types of the contained exceptions.
       Returns an exception group with the same :attr:`message`, but which
       wraps the exceptions in ``excs``.
 
-      This method is used by :meth:`subgroup` and :meth:`split`. A
+      This method is used by :meth:`subgroup` and :meth:`split`, which
+      are used in various contexts to break up an exception group. A
       subclass needs to override it in order to make :meth:`subgroup`
       and :meth:`split` return instances of the subclass rather
       than :exc:`ExceptionGroup`.
diff --git a/Doc/library/faulthandler.rst b/Doc/library/faulthandler.rst
index c40d5e9aacb83c..4067d7912b88b2 100644
--- a/Doc/library/faulthandler.rst
+++ b/Doc/library/faulthandler.rst
@@ -1,5 +1,5 @@
-:mod:`faulthandler` --- Dump the Python traceback
-=================================================
+:mod:`!faulthandler` --- Dump the Python traceback
+==================================================
 
 .. module:: faulthandler
    :synopsis: Dump the Python traceback.
diff --git a/Doc/library/fcntl.rst b/Doc/library/fcntl.rst
index 59215f34e01cb7..7bd64e43dd5bfe 100644
--- a/Doc/library/fcntl.rst
+++ b/Doc/library/fcntl.rst
@@ -1,5 +1,5 @@
-:mod:`fcntl` --- The ``fcntl`` and ``ioctl`` system calls
-=========================================================
+:mod:`!fcntl` --- The ``fcntl`` and ``ioctl`` system calls
+==========================================================
 
 .. module:: fcntl
    :platform: Unix
diff --git a/Doc/library/filecmp.rst b/Doc/library/filecmp.rst
index 42d20b9c201783..282d0e0d8db5cf 100644
--- a/Doc/library/filecmp.rst
+++ b/Doc/library/filecmp.rst
@@ -1,5 +1,5 @@
-:mod:`filecmp` --- File and Directory Comparisons
-=================================================
+:mod:`!filecmp` --- File and Directory Comparisons
+==================================================
 
 .. module:: filecmp
    :synopsis: Compare files efficiently.
@@ -70,7 +70,7 @@ The :mod:`filecmp` module defines the following functions:
 The :class:`dircmp` class
 -------------------------
 
-.. class:: dircmp(a, b, ignore=None, hide=None, shallow=True)
+.. class:: dircmp(a, b, ignore=None, hide=None, *, shallow=True)
 
    Construct a new directory comparison object, to compare the directories *a*
    and *b*.  *ignore* is a list of names to ignore, and defaults to
diff --git a/Doc/library/fileinput.rst b/Doc/library/fileinput.rst
index f93e9a58791eeb..8f32b11e565365 100644
--- a/Doc/library/fileinput.rst
+++ b/Doc/library/fileinput.rst
@@ -1,5 +1,5 @@
-:mod:`fileinput` --- Iterate over lines from multiple input streams
-===================================================================
+:mod:`!fileinput` --- Iterate over lines from multiple input streams
+====================================================================
 
 .. module:: fileinput
    :synopsis: Loop over standard input or a list of files.
@@ -47,7 +47,7 @@ Lines are returned with any newlines intact, which means that the last line in
 a file may not have one.
 
 You can control how files are opened by providing an opening hook via the
-*openhook* parameter to :func:`fileinput.input` or :class:`FileInput()`. The
+*openhook* parameter to :func:`fileinput.input` or :func:`FileInput`. The
 hook must be a function that takes two arguments, *filename* and *mode*, and
 returns an accordingly opened file-like object. If *encoding* and/or *errors*
 are specified, they will be passed to the hook as additional keyword arguments.
diff --git a/Doc/library/filesys.rst b/Doc/library/filesys.rst
index 0ccf2b7bf59a0f..f1ea4761af7cb1 100644
--- a/Doc/library/filesys.rst
+++ b/Doc/library/filesys.rst
@@ -14,7 +14,6 @@ in this chapter is:
 
    pathlib.rst
    os.path.rst
-   fileinput.rst
    stat.rst
    filecmp.rst
    tempfile.rst
diff --git a/Doc/library/fnmatch.rst b/Doc/library/fnmatch.rst
index 7cddecd5e80887..5cb47777ae527d 100644
--- a/Doc/library/fnmatch.rst
+++ b/Doc/library/fnmatch.rst
@@ -1,5 +1,5 @@
-:mod:`fnmatch` --- Unix filename pattern matching
-=================================================
+:mod:`!fnmatch` --- Unix filename pattern matching
+==================================================
 
 .. module:: fnmatch
    :synopsis: Unix shell style filename pattern matching.
@@ -46,9 +46,15 @@ module.  See module :mod:`glob` for pathname expansion (:mod:`glob` uses
 a period are not special for this module, and are matched by the ``*`` and ``?``
 patterns.
 
-Also note that :func:`functools.lru_cache` with the *maxsize* of 32768 is used to
-cache the compiled regex patterns in the following functions: :func:`fnmatch`,
-:func:`fnmatchcase`, :func:`.filter`.
+Unless stated otherwise, "filename string" and "pattern string" either refer to
+:class:`str` or ``ISO-8859-1`` encoded :class:`bytes` objects. Note that the
+functions documented below do not allow to mix a :class:`!bytes` pattern with
+a :class:`!str` filename, and vice-versa.
+
+Finally, note that :func:`functools.lru_cache` with a *maxsize* of 32768
+is used to cache the (typed) compiled regex patterns in the following
+functions: :func:`fnmatch`, :func:`fnmatchcase`, :func:`.filter`.
+
 
 .. function:: fnmatch(name, pat)
 
@@ -78,8 +84,8 @@ cache the compiled regex patterns in the following functions: :func:`fnmatch`,
 
 .. function:: filter(names, pat)
 
-   Construct a list from those elements of the :term:`iterable` *names*
-   that match pattern *pat*.
+   Construct a list from those elements of the :term:`iterable` of filename
+   strings *names* that match the pattern string *pat*.
    It is the same as ``[n for n in names if fnmatch(n, pat)]``,
    but implemented more efficiently.
 
@@ -87,7 +93,7 @@ cache the compiled regex patterns in the following functions: :func:`fnmatch`,
 .. function:: translate(pat)
 
    Return the shell-style pattern *pat* converted to a regular expression for
-   using with :func:`re.match`.
+   using with :func:`re.match`. The pattern is expected to be a :class:`str`.
 
    Example:
 
diff --git a/Doc/library/fractions.rst b/Doc/library/fractions.rst
index 887c3844d20faa..7e615ed230a340 100644
--- a/Doc/library/fractions.rst
+++ b/Doc/library/fractions.rst
@@ -1,5 +1,5 @@
-:mod:`fractions` --- Rational numbers
-=====================================
+:mod:`!fractions` --- Rational numbers
+======================================
 
 .. module:: fractions
    :synopsis: Rational numbers.
@@ -31,7 +31,7 @@ another rational number, or from a string.
    :class:`Fraction` instance with the same value.  The next two versions accept
    either a :class:`float` or a :class:`decimal.Decimal` instance, and return a
    :class:`Fraction` instance with exactly the same value.  Note that due to the
-   usual issues with binary floating-point (see :ref:`tut-fp-issues`), the
+   usual issues with binary floating point (see :ref:`tut-fp-issues`), the
    argument to ``Fraction(1.1)`` is not exactly equal to 11/10, and so
    ``Fraction(1.1)`` does *not* return ``Fraction(11, 10)`` as one might expect.
    (But see the documentation for the :meth:`limit_denominator` method below.)
@@ -87,7 +87,7 @@ another rational number, or from a string.
 
    .. versionchanged:: 3.9
       The :func:`math.gcd` function is now used to normalize the *numerator*
-      and *denominator*. :func:`math.gcd` always return a :class:`int` type.
+      and *denominator*. :func:`math.gcd` always returns an :class:`int` type.
       Previously, the GCD type depended on *numerator* and *denominator*.
 
    .. versionchanged:: 3.11
diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index 8d1aae018ada12..bb15322067245e 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -1,5 +1,5 @@
-:mod:`ftplib` --- FTP protocol client
-=====================================
+:mod:`!ftplib` --- FTP protocol client
+======================================
 
 .. module:: ftplib
    :synopsis: FTP protocol client (requires sockets).
@@ -243,7 +243,7 @@ FTP objects
       Retrieve a file in binary transfer mode.
 
       :param str cmd:
-        An appropriate ``STOR`` command: :samp:`"STOR {filename}"`.
+        An appropriate ``RETR`` command: :samp:`"RETR {filename}"`.
 
       :param callback:
          A single parameter callable that is called
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 0c7ef67774cd05..7247bb937955a9 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -57,7 +57,7 @@ are always available.  They are listed here in alphabetical order.
 .. function:: abs(x)
 
    Return the absolute value of a number.  The argument may be an
-   integer, a floating point number, or an object implementing
+   integer, a floating-point number, or an object implementing
    :meth:`~object.__abs__`.
    If the argument is a complex number, its magnitude is returned.
 
@@ -141,10 +141,11 @@ are always available.  They are listed here in alphabetical order.
    See also :func:`format` for more information.
 
 
-.. class:: bool(x=False)
+.. class:: bool(object=False, /)
 
-   Return a Boolean value, i.e. one of ``True`` or ``False``.  *x* is converted
-   using the standard :ref:`truth testing procedure <truth>`.  If *x* is false
+   Return a Boolean value, i.e. one of ``True`` or ``False``.  The argument
+   is converted using the standard :ref:`truth testing procedure <truth>`.
+   If the argument is false
    or omitted, this returns ``False``; otherwise, it returns ``True``.  The
    :class:`bool` class is a subclass of :class:`int` (see :ref:`typesnumeric`).
    It cannot be subclassed further.  Its only instances are ``False`` and
@@ -153,14 +154,14 @@ are always available.  They are listed here in alphabetical order.
    .. index:: pair: Boolean; type
 
    .. versionchanged:: 3.7
-      *x* is now a positional-only parameter.
+      The parameter is now positional-only.
 
 .. function:: breakpoint(*args, **kws)
 
    This function drops you into the debugger at the call site.  Specifically,
    it calls :func:`sys.breakpointhook`, passing ``args`` and ``kws`` straight
    through.  By default, ``sys.breakpointhook()`` calls
-   :func:`pdb.set_trace()` expecting no arguments.  In this case, it is
+   :func:`pdb.set_trace` expecting no arguments.  In this case, it is
    purely a convenience function so you don't have to explicitly import
    :mod:`pdb` or type as much code to enter the debugger.  However,
    :func:`sys.breakpointhook` can be set to some other function and
@@ -282,9 +283,11 @@ are always available.  They are listed here in alphabetical order.
       :func:`property`.
 
    .. versionchanged:: 3.10
-      Class methods now inherit the method attributes (``__module__``,
-      ``__name__``, ``__qualname__``, ``__doc__`` and ``__annotations__``) and
-      have a new ``__wrapped__`` attribute.
+      Class methods now inherit the method attributes
+      (:attr:`~function.__module__`, :attr:`~function.__name__`,
+      :attr:`~function.__qualname__`, :attr:`~function.__doc__` and
+      :attr:`~function.__annotations__`) and have a new ``__wrapped__``
+      attribute.
 
    .. deprecated-removed:: 3.11 3.13
       Class methods can no longer wrap other :term:`descriptors <descriptor>` such as
@@ -371,29 +374,73 @@ are always available.  They are listed here in alphabetical order.
       support for top-level ``await``, ``async for``, and ``async with``.
 
 
-.. class:: complex(real=0, imag=0)
-           complex(string)
+.. class:: complex(number=0, /)
+           complex(string, /)
+           complex(real=0, imag=0)
+
+   Convert a single string or number to a complex number, or create a
+   complex number from real and imaginary parts.
+
+   Examples:
+
+   .. doctest::
+
+      >>> complex('+1.23')
+      (1.23+0j)
+      >>> complex('-4.5j')
+      -4.5j
+      >>> complex('-1.23+4.5j')
+      (-1.23+4.5j)
+      >>> complex('\t( -1.23+4.5J )\n')
+      (-1.23+4.5j)
+      >>> complex('-Infinity+NaNj')
+      (-inf+nanj)
+      >>> complex(1.23)
+      (1.23+0j)
+      >>> complex(imag=-4.5)
+      -4.5j
+      >>> complex(-1.23, 4.5)
+      (-1.23+4.5j)
+
+   If the argument is a string, it must contain either a real part (in the
+   same format as for :func:`float`) or an imaginary part (in the same
+   format but with a ``'j'`` or ``'J'`` suffix), or both real and imaginary
+   parts (the sign of the imaginary part is mandatory in this case).
+   The string can optionally be surrounded by whitespaces and the round
+   parentheses ``'('`` and ``')'``, which are ignored.
+   The string must not contain whitespace between ``'+'``, ``'-'``, the
+   ``'j'`` or ``'J'`` suffix, and the decimal number.
+   For example, ``complex('1+2j')`` is fine, but ``complex('1 + 2j')`` raises
+   :exc:`ValueError`.
+   More precisely, the input must conform to the :token:`~float:complexvalue`
+   production rule in the following grammar, after parentheses and leading and
+   trailing whitespace characters are removed:
 
-   Return a complex number with the value *real* + *imag*\*1j or convert a string
-   or number to a complex number.  If the first parameter is a string, it will
-   be interpreted as a complex number and the function must be called without a
-   second parameter.  The second parameter can never be a string. Each argument
-   may be any numeric type (including complex).  If *imag* is omitted, it
-   defaults to zero and the constructor serves as a numeric conversion like
-   :class:`int` and :class:`float`.  If both arguments are omitted, returns
-   ``0j``.
+   .. productionlist:: float
+      complexvalue: `floatvalue` |
+                  : `floatvalue` ("j" | "J") |
+                  : `floatvalue` `sign` `absfloatvalue` ("j" | "J")
 
+   If the argument is a number, the constructor serves as a numeric
+   conversion like :class:`int` and :class:`float`.
    For a general Python object ``x``, ``complex(x)`` delegates to
-   ``x.__complex__()``.  If :meth:`~object.__complex__` is not defined then it falls back
-   to :meth:`~object.__float__`.  If :meth:`!__float__` is not defined then it falls back
+   ``x.__complex__()``.
+   If :meth:`~object.__complex__` is not defined then it falls back
+   to :meth:`~object.__float__`.
+   If :meth:`!__float__` is not defined then it falls back
    to :meth:`~object.__index__`.
 
-   .. note::
+   If two arguments are provided or keyword arguments are used, each argument
+   may be any numeric type (including complex).
+   If both arguments are real numbers, return a complex number with the real
+   component *real* and the imaginary component *imag*.
+   If both arguments are complex numbers, return a complex number with the real
+   component ``real.real-imag.imag`` and the imaginary component
+   ``real.imag+imag.real``.
+   If one of arguments is a real number, only its real component is used in
+   the above expressions.
 
-      When converting from a string, the string must not contain whitespace
-      around the central ``+`` or ``-`` operator.  For example,
-      ``complex('1+2j')`` is fine, but ``complex('1 + 2j')`` raises
-      :exc:`ValueError`.
+   If all arguments are omitted, returns ``0j``.
 
    The complex type is described in :ref:`typesnumeric`.
 
@@ -493,7 +540,7 @@ are always available.  They are listed here in alphabetical order.
    Take two (non-complex) numbers as arguments and return a pair of numbers
    consisting of their quotient and remainder when using integer division.  With
    mixed operand types, the rules for binary arithmetic operators apply.  For
-   integers, the result is the same as ``(a // b, a % b)``. For floating point
+   integers, the result is the same as ``(a // b, a % b)``. For floating-point
    numbers the result is ``(q, a % b)``, where *q* is usually ``math.floor(a /
    b)`` but may be 1 less than that.  In any case ``q * b + a % b`` is very
    close to *a*, if ``a % b`` is non-zero it has the same sign as *b*, and ``0
@@ -541,20 +588,26 @@ are always available.  They are listed here in alphabetical order.
    :returns: The result of the evaluated expression.
    :raises: Syntax errors are reported as exceptions.
 
+   .. warning::
+
+      This function executes arbitrary code. Calling it with
+      user-supplied input may lead to security vulnerabilities.
+
    The *expression* argument is parsed and evaluated as a Python expression
    (technically speaking, a condition list) using the *globals* and *locals*
-   dictionaries as global and local namespace.  If the *globals* dictionary is
+   mappings as global and local namespace.  If the *globals* dictionary is
    present and does not contain a value for the key ``__builtins__``, a
    reference to the dictionary of the built-in module :mod:`builtins` is
    inserted under that key before *expression* is parsed.  That way you can
    control what builtins are available to the executed code by inserting your
    own ``__builtins__`` dictionary into *globals* before passing it to
-   :func:`eval`.  If the *locals* dictionary is omitted it defaults to the
-   *globals* dictionary.  If both dictionaries are omitted, the expression is
+   :func:`eval`.  If the *locals* mapping is omitted it defaults to the
+   *globals* dictionary.  If both mappings are omitted, the expression is
    executed with the *globals* and *locals* in the environment where
-   :func:`eval` is called.  Note, *eval()* does not have access to the
+   :func:`eval` is called.  Note, *eval()* will only have access to the
    :term:`nested scopes <nested scope>` (non-locals) in the enclosing
-   environment.
+   environment if they are already referenced in the scope that is calling
+   :func:`eval` (e.g. via a :keyword:`nonlocal` statement).
 
    Example:
 
@@ -587,10 +640,20 @@ are always available.  They are listed here in alphabetical order.
 
       The *globals* and *locals* arguments can now be passed as keywords.
 
+   .. versionchanged:: 3.13
+
+      The semantics of the default *locals* namespace have been adjusted as
+      described for the :func:`locals` builtin.
+
 .. index:: pair: built-in function; exec
 
 .. function:: exec(source, /, globals=None, locals=None, *, closure=None)
 
+   .. warning::
+
+      This function executes arbitrary code. Calling it with
+      user-supplied input may lead to security vulnerabilities.
+
    This function supports dynamic execution of Python code. *source* must be
    either a string or a code object.  If it is a string, the string is parsed as
    a suite of Python statements which is then executed (unless a syntax error
@@ -608,9 +671,15 @@ are always available.  They are listed here in alphabetical order.
    will be used for both the global and the local variables.  If *globals* and
    *locals* are given, they are used for the global and local variables,
    respectively.  If provided, *locals* can be any mapping object.  Remember
-   that at the module level, globals and locals are the same dictionary. If exec
-   gets two separate objects as *globals* and *locals*, the code will be
-   executed as if it were embedded in a class definition.
+   that at the module level, globals and locals are the same dictionary.
+
+   .. note::
+
+      When ``exec`` gets two separate objects as *globals* and *locals*, the
+      code will be executed as if it were embedded in a class definition. This
+      means functions and classes defined in the executed code will not be able
+      to access variables assigned at the top level (as the "top level"
+      variables are treated as class variables in a class definition).
 
    If the *globals* dictionary does not contain a value for the key
    ``__builtins__``, a reference to the dictionary of the built-in module
@@ -619,9 +688,10 @@ are always available.  They are listed here in alphabetical order.
    ``__builtins__`` dictionary into *globals* before passing it to :func:`exec`.
 
    The *closure* argument specifies a closure--a tuple of cellvars.
-   It's only valid when the *object* is a code object containing free variables.
-   The length of the tuple must exactly match the number of free variables
-   referenced by the code object.
+   It's only valid when the *object* is a code object containing
+   :term:`free (closure) variables <closure variable>`.
+   The length of the tuple must exactly match the length of the code object's
+   :attr:`~codeobject.co_freevars` attribute.
 
    .. audit-event:: exec code_object exec
 
@@ -631,7 +701,7 @@ are always available.  They are listed here in alphabetical order.
    .. note::
 
       The built-in functions :func:`globals` and :func:`locals` return the current
-      global and local dictionary, respectively, which may be useful to pass around
+      global and local namespace, respectively, which may be useful to pass around
       for use as the second and third argument to :func:`exec`.
 
    .. note::
@@ -647,6 +717,11 @@ are always available.  They are listed here in alphabetical order.
 
       The *globals* and *locals* arguments can now be passed as keywords.
 
+   .. versionchanged:: 3.13
+
+      The semantics of the default *locals* namespace have been adjusted as
+      described for the :func:`locals` builtin.
+
 
 .. function:: filter(function, iterable)
 
@@ -665,21 +740,38 @@ are always available.  They are listed here in alphabetical order.
    elements of *iterable* for which *function* is false.
 
 
-.. class:: float(x=0.0)
+.. class:: float(number=0.0, /)
+           float(string, /)
 
    .. index::
       single: NaN
       single: Infinity
 
-   Return a floating point number constructed from a number or string *x*.
+   Return a floating-point number constructed from a number or a string.
+
+   Examples:
+
+   .. doctest::
+
+      >>> float('+1.23')
+      1.23
+      >>> float('   -12345\n')
+      -12345.0
+      >>> float('1e-003')
+      0.001
+      >>> float('+1E6')
+      1000000.0
+      >>> float('-Infinity')
+      -inf
 
    If the argument is a string, it should contain a decimal number, optionally
    preceded by a sign, and optionally embedded in whitespace.  The optional
    sign may be ``'+'`` or ``'-'``; a ``'+'`` sign has no effect on the value
    produced.  The argument may also be a string representing a NaN
-   (not-a-number), or positive or negative infinity.  More precisely, the
-   input must conform to the ``floatvalue`` production rule in the following
-   grammar, after leading and trailing whitespace characters are removed:
+   (not-a-number), or positive or negative infinity.
+   More precisely, the input must conform to the :token:`~float:floatvalue`
+   production rule in the following grammar, after leading and trailing
+   whitespace characters are removed:
 
    .. productionlist:: float
       sign: "+" | "-"
@@ -688,15 +780,16 @@ are always available.  They are listed here in alphabetical order.
       digit: <a Unicode decimal digit, i.e. characters in Unicode general category Nd>
       digitpart: `digit` (["_"] `digit`)*
       number: [`digitpart`] "." `digitpart` | `digitpart` ["."]
-      exponent: ("e" | "E") ["+" | "-"] `digitpart`
-      floatnumber: number [`exponent`]
-      floatvalue: [`sign`] (`floatnumber` | `infinity` | `nan`)
+      exponent: ("e" | "E") [`sign`] `digitpart`
+      floatnumber: `number` [`exponent`]
+      absfloatvalue: `floatnumber` | `infinity` | `nan`
+      floatvalue: [`sign`] `absfloatvalue`
 
    Case is not significant, so, for example, "inf", "Inf", "INFINITY", and
    "iNfINity" are all acceptable spellings for positive infinity.
 
-   Otherwise, if the argument is an integer or a floating point number, a
-   floating point number with the same value (within Python's floating point
+   Otherwise, if the argument is an integer or a floating-point number, a
+   floating-point number with the same value (within Python's floating-point
    precision) is returned.  If the argument is outside the range of a Python
    float, an :exc:`OverflowError` will be raised.
 
@@ -706,26 +799,13 @@ are always available.  They are listed here in alphabetical order.
 
    If no argument is given, ``0.0`` is returned.
 
-   Examples::
-
-      >>> float('+1.23')
-      1.23
-      >>> float('   -12345\n')
-      -12345.0
-      >>> float('1e-003')
-      0.001
-      >>> float('+1E6')
-      1000000.0
-      >>> float('-Infinity')
-      -inf
-
    The float type is described in :ref:`typesnumeric`.
 
    .. versionchanged:: 3.6
       Grouping digits with underscores as in code literals is allowed.
 
    .. versionchanged:: 3.7
-      *x* is now a positional-only parameter.
+      The parameter is now positional-only.
 
    .. versionchanged:: 3.8
       Falls back to :meth:`~object.__index__` if :meth:`~object.__float__` is not defined.
@@ -909,17 +989,36 @@ are always available.  They are listed here in alphabetical order.
       with the result after successfully reading input.
 
 
-.. class:: int(x=0)
-           int(x, base=10)
+.. class:: int(number=0, /)
+           int(string, /, base=10)
+
+   Return an integer object constructed from a number or a string, or return
+   ``0`` if no arguments are given.
 
-   Return an integer object constructed from a number or string *x*, or return
-   ``0`` if no arguments are given.  If *x* defines :meth:`~object.__int__`,
-   ``int(x)`` returns ``x.__int__()``.  If *x* defines :meth:`~object.__index__`,
-   it returns ``x.__index__()``.  If *x* defines :meth:`~object.__trunc__`,
+   Examples:
+
+   .. doctest::
+
+      >>> int(123.45)
+      123
+      >>> int('123')
+      123
+      >>> int('   -12_345\n')
+      -12345
+      >>> int('FACE', 16)
+      64206
+      >>> int('0xface', 0)
+      64206
+      >>> int('01110011', base=2)
+      115
+
+   If the argument defines :meth:`~object.__int__`,
+   ``int(x)`` returns ``x.__int__()``.  If the argument defines :meth:`~object.__index__`,
+   it returns ``x.__index__()``.  If the argument defines :meth:`~object.__trunc__`,
    it returns ``x.__trunc__()``.
-   For floating point numbers, this truncates towards zero.
+   For floating-point numbers, this truncates towards zero.
 
-   If *x* is not a number or if *base* is given, then *x* must be a string,
+   If the argument is not a number or if *base* is given, then it must be a string,
    :class:`bytes`, or :class:`bytearray` instance representing an integer
    in radix *base*.  Optionally, the string can be preceded by ``+`` or ``-``
    (with no space in between), have leading zeros, be surrounded by whitespace,
@@ -949,7 +1048,7 @@ are always available.  They are listed here in alphabetical order.
       Grouping digits with underscores as in code literals is allowed.
 
    .. versionchanged:: 3.7
-      *x* is now a positional-only parameter.
+      The first parameter is now positional-only.
 
    .. versionchanged:: 3.8
       Falls back to :meth:`~object.__index__` if :meth:`~object.__int__` is not defined.
@@ -960,7 +1059,7 @@ are always available.  They are listed here in alphabetical order.
    .. versionchanged:: 3.11
       :class:`int` string inputs and string representations can be limited to
       help avoid denial of service attacks. A :exc:`ValueError` is raised when
-      the limit is exceeded while converting a string *x* to an :class:`int` or
+      the limit is exceeded while converting a string to an :class:`int` or
       when converting an :class:`int` into a string would exceed the limit.
       See the :ref:`integer string conversion length limitation
       <int_max_str_digits>` documentation.
@@ -1052,39 +1151,51 @@ are always available.  They are listed here in alphabetical order.
     variable names as the keys, and their currently bound references as the
     values.
 
-    At module scope, as well as when using ``exec()`` or ``eval()`` with a
-    single namespace, this function returns the same namespace as ``globals()``.
+    At module scope, as well as when using :func:`exec` or :func:`eval` with
+    a single namespace, this function returns the same namespace as
+    :func:`globals`.
 
     At class scope, it returns the namespace that will be passed to the
     metaclass constructor.
 
     When using ``exec()`` or ``eval()`` with separate local and global
-    namespaces, it returns the local namespace passed in to the function call.
+    arguments, it returns the local namespace passed in to the function call.
 
     In all of the above cases, each call to ``locals()`` in a given frame of
     execution will return the *same* mapping object. Changes made through
-    the mapping object returned from ``locals()`` will be visible as bound,
-    rebound, or deleted local variables, and binding, rebinding, or deleting
-    local variables will immediately affect the contents of the returned mapping
-    object.
-
-    At function scope (including for generators and coroutines), each call to
-    ``locals()`` instead returns a fresh dictionary containing the current
-    bindings of the function's local variables and any nonlocal cell references.
-    In this case, name binding changes made via the returned dict are *not*
-    written back to the corresponding local variables or nonlocal cell
-    references, and binding, rebinding, or deleting local variables and nonlocal
-    cell references does *not* affect the contents of previously returned
-    dictionaries.
+    the mapping object returned from ``locals()`` will be visible as assigned,
+    reassigned, or deleted local variables, and assigning, reassigning, or
+    deleting local variables will immediately affect the contents of the
+    returned mapping object.
+
+    In an :term:`optimized scope` (including functions, generators, and
+    coroutines), each call to ``locals()`` instead returns a fresh dictionary
+    containing the current bindings of the function's local variables and any
+    nonlocal cell references. In this case, name binding changes made via the
+    returned dict are *not* written back to the corresponding local variables
+    or nonlocal cell references, and assigning, reassigning, or deleting local
+    variables and nonlocal cell references does *not* affect the contents
+    of previously returned dictionaries.
+
+    Calling ``locals()`` as part of a comprehension in a function, generator, or
+    coroutine is equivalent to calling it in the containing scope, except that
+    the comprehension's initialised iteration variables will be included. In
+    other scopes, it behaves as if the comprehension were running as a nested
+    function.
+
+    Calling ``locals()`` as part of a generator expression is equivalent to
+    calling it in a nested generator function.
+
+   .. versionchanged:: 3.12
+      The behaviour of ``locals()`` in a comprehension has been updated as
+      described in :pep:`709`.
 
    .. versionchanged:: 3.13
-      In previous versions, the semantics of mutating the mapping object
-      returned from this function were formally undefined. In CPython
-      specifically, the mapping returned at function scope could be
-      implicitly refreshed by other operations, such as calling ``locals()``
-      again. Obtaining the legacy CPython behaviour now requires explicit
-      calls to update the initially returned dictionary with the results
-      of subsequent calls to ``locals()``.
+      As part of :pep:`667`, the semantics of mutating the mapping objects
+      returned from this function are now defined. The behavior in
+      :term:`optimized scopes <optimized scope>` is now as described above.
+      Aside from being defined, the behaviour in other scopes remains
+      unchanged from previous versions.
 
 
 .. function:: map(function, iterable, *iterables)
@@ -1175,14 +1286,16 @@ are always available.  They are listed here in alphabetical order.
 
 .. class:: object()
 
-   Return a new featureless object.  :class:`object` is a base for all classes.
-   It has methods that are common to all instances of Python classes.  This
-   function does not accept any arguments.
+   This is the ultimate base class of all other classes. It has methods
+   that are common to all instances of Python classes. When the constructor
+   is called, it returns a new featureless object. The constructor does not
+   accept any arguments.
 
    .. note::
 
-      :class:`object` does *not* have a :attr:`~object.__dict__`, so you can't
-      assign arbitrary attributes to an instance of the :class:`object` class.
+      :class:`object` instances do *not* have :attr:`~object.__dict__`
+      attributes, so you can't assign arbitrary attributes to an instance of
+      :class:`object`.
 
 
 .. function:: oct(x)
@@ -1231,7 +1344,7 @@ are always available.  They are listed here in alphabetical order.
    (which on *some* Unix systems, means that *all* writes append to the end of
    the file regardless of the current seek position).  In text mode, if
    *encoding* is not specified the encoding used is platform-dependent:
-   :func:`locale.getencoding()` is called to get the current locale encoding.
+   :func:`locale.getencoding` is called to get the current locale encoding.
    (For reading and writing raw bytes use binary mode and leave
    *encoding* unspecified.)  The available modes are:
 
@@ -1404,7 +1517,7 @@ are always available.  They are listed here in alphabetical order.
    (where :func:`open` is declared), :mod:`os`, :mod:`os.path`, :mod:`tempfile`,
    and :mod:`shutil`.
 
-   .. audit-event:: open file,mode,flags open
+   .. audit-event:: open path,mode,flags open
 
    The ``mode`` and ``flags`` arguments may have been modified or inferred from
    the original call.
@@ -1460,7 +1573,9 @@ are always available.  They are listed here in alphabetical order.
    returns ``100``, but ``pow(10, -2)`` returns ``0.01``.  For a negative base of
    type :class:`int` or :class:`float` and a non-integral exponent, a complex
    result is delivered.  For example, ``pow(-9, 0.5)`` returns a value close
-   to ``3j``.
+   to ``3j``. Whereas, for a negative base of type :class:`int` or :class:`float`
+   with an integral exponent, a float result is delivered. For example,
+   ``pow(-9, 2.0)`` returns ``81.0``.
 
    For :class:`int` operands *base* and *exp*, if *mod* is present, *mod* must
    also be of integer type and *mod* must be nonzero. If *mod* is present and
@@ -1593,6 +1708,13 @@ are always available.  They are listed here in alphabetical order.
    .. versionchanged:: 3.5
       The docstrings of property objects are now writeable.
 
+   .. attribute:: __name__
+
+      Attribute holding the name of the property. The name of the property
+      can be changed at runtime.
+
+      .. versionadded:: 3.13
+
 
 .. _func-range:
 .. class:: range(stop)
@@ -1793,10 +1915,11 @@ are always available.  They are listed here in alphabetical order.
    For more information on static methods, see :ref:`types`.
 
    .. versionchanged:: 3.10
-      Static methods now inherit the method attributes (``__module__``,
-      ``__name__``, ``__qualname__``, ``__doc__`` and ``__annotations__``),
-      have a new ``__wrapped__`` attribute, and are now callable as regular
-      functions.
+      Static methods now inherit the method attributes
+      (:attr:`~function.__module__`, :attr:`~function.__name__`,
+      :attr:`~function.__qualname__`, :attr:`~function.__doc__` and
+      :attr:`~function.__annotations__`), have a new ``__wrapped__`` attribute,
+      and are now callable as regular functions.
 
 
 .. index::
@@ -1821,7 +1944,7 @@ are always available.  They are listed here in alphabetical order.
 
    For some use cases, there are good alternatives to :func:`sum`.
    The preferred, fast way to concatenate a sequence of strings is by calling
-   ``''.join(sequence)``.  To add floating point values with extended precision,
+   ``''.join(sequence)``.  To add floating-point values with extended precision,
    see :func:`math.fsum`\.  To concatenate a series of iterables, consider using
    :func:`itertools.chain`.
 
@@ -1843,14 +1966,14 @@ are always available.  They are listed here in alphabetical order.
    to be searched.  The search starts from the class right after the
    *type*.
 
-   For example, if :attr:`~class.__mro__` of *object_or_type* is
+   For example, if :attr:`~type.__mro__` of *object_or_type* is
    ``D -> B -> C -> A -> object`` and the value of *type* is ``B``,
    then :func:`super` searches ``C -> A -> object``.
 
-   The :attr:`~class.__mro__` attribute of the *object_or_type* lists the method
-   resolution search order used by both :func:`getattr` and :func:`super`.  The
-   attribute is dynamic and can change whenever the inheritance hierarchy is
-   updated.
+   The :attr:`~type.__mro__` attribute of the class corresponding to
+   *object_or_type* lists the method resolution search order used by both
+   :func:`getattr` and :func:`super`.  The attribute is dynamic and can change
+   whenever the inheritance hierarchy is updated.
 
    If the second argument is omitted, the super object returned is unbound.  If
    the second argument is an object, ``isinstance(obj, type)`` must be true.  If
@@ -1926,28 +2049,30 @@ are always available.  They are listed here in alphabetical order.
 
    With one argument, return the type of an *object*.  The return value is a
    type object and generally the same object as returned by
-   :attr:`object.__class__ <instance.__class__>`.
+   :attr:`object.__class__`.
 
    The :func:`isinstance` built-in function is recommended for testing the type
    of an object, because it takes subclasses into account.
 
-
    With three arguments, return a new type object.  This is essentially a
    dynamic form of the :keyword:`class` statement. The *name* string is
-   the class name and becomes the :attr:`~definition.__name__` attribute.
+   the class name and becomes the :attr:`~type.__name__` attribute.
    The *bases* tuple contains the base classes and becomes the
-   :attr:`~class.__bases__` attribute; if empty, :class:`object`, the
+   :attr:`~type.__bases__` attribute; if empty, :class:`object`, the
    ultimate base of all classes, is added.  The *dict* dictionary contains
    attribute and method definitions for the class body; it may be copied
-   or wrapped before becoming the :attr:`~object.__dict__` attribute.
-   The following two statements create identical :class:`type` objects:
+   or wrapped before becoming the :attr:`~type.__dict__` attribute.
+   The following two statements create identical :class:`!type` objects:
 
       >>> class X:
       ...     a = 1
       ...
       >>> X = type('X', (), dict(a=1))
 
-   See also :ref:`bltin-type-objects`.
+   See also:
+
+   * :ref:`Documentation on attributes and methods on classes <class-attrs-and-methods>`.
+   * :ref:`bltin-type-objects`
 
    Keyword arguments provided to the three argument form are passed to the
    appropriate metaclass machinery (usually :meth:`~object.__init_subclass__`)
@@ -1957,28 +2082,32 @@ are always available.  They are listed here in alphabetical order.
    See also :ref:`class-customization`.
 
    .. versionchanged:: 3.6
-      Subclasses of :class:`type` which don't override ``type.__new__`` may no
+      Subclasses of :class:`!type` which don't override ``type.__new__`` may no
       longer use the one-argument form to get the type of an object.
 
 .. function:: vars()
               vars(object)
 
    Return the :attr:`~object.__dict__` attribute for a module, class, instance,
-   or any other object with a :attr:`~object.__dict__` attribute.
+   or any other object with a :attr:`!__dict__` attribute.
 
    Objects such as modules and instances have an updateable :attr:`~object.__dict__`
    attribute; however, other objects may have write restrictions on their
-   :attr:`~object.__dict__` attributes (for example, classes use a
+   :attr:`!__dict__` attributes (for example, classes use a
    :class:`types.MappingProxyType` to prevent direct dictionary updates).
 
-   Without an argument, :func:`vars` acts like :func:`locals`.  Note, the
-   locals dictionary is only useful for reads since updates to the locals
-   dictionary are ignored.
+   Without an argument, :func:`vars` acts like :func:`locals`.
 
    A :exc:`TypeError` exception is raised if an object is specified but
    it doesn't have a :attr:`~object.__dict__` attribute (for example, if
    its class defines the :attr:`~object.__slots__` attribute).
 
+   .. versionchanged:: 3.13
+
+      The result of calling this function without an argument has been
+      updated as described for the :func:`locals` builtin.
+
+
 .. function:: zip(*iterables, strict=False)
 
    Iterate over several iterables in parallel, producing tuples with an item
diff --git a/Doc/library/functools.rst b/Doc/library/functools.rst
index 82c970d25a7aac..3540a1e8f4971f 100644
--- a/Doc/library/functools.rst
+++ b/Doc/library/functools.rst
@@ -1,5 +1,5 @@
-:mod:`functools` --- Higher-order functions and operations on callable objects
-==============================================================================
+:mod:`!functools` --- Higher-order functions and operations on callable objects
+===============================================================================
 
 .. module:: functools
    :synopsis: Higher-order functions and operations on callable objects.
@@ -34,7 +34,7 @@ The :mod:`functools` module defines the following functions:
    Returns the same as ``lru_cache(maxsize=None)``, creating a thin
    wrapper around a dictionary lookup for the function arguments.  Because it
    never needs to evict old values, this is smaller and faster than
-   :func:`lru_cache()` with a size limit.
+   :func:`lru_cache` with a size limit.
 
    For example::
 
@@ -218,7 +218,7 @@ The :mod:`functools` module defines the following functions:
    cache.  See :ref:`faq-cache-method-calls`
 
    An `LRU (least recently used) cache
-   <https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU)>`_
+   <https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_Recently_Used_(LRU)>`_
    works best when the most recent calls are the best predictors of upcoming
    calls (for example, the most popular articles on a news server tend to
    change each day).  The cache's size limit assures that the cache does not
@@ -325,7 +325,7 @@ The :mod:`functools` module defines the following functions:
    .. versionadded:: 3.2
 
    .. versionchanged:: 3.4
-      Returning NotImplemented from the underlying comparison function for
+      Returning ``NotImplemented`` from the underlying comparison function for
       unrecognised types is now supported.
 
 .. function:: partial(func, /, *args, **keywords)
@@ -492,6 +492,25 @@ The :mod:`functools` module defines the following functions:
      ...     print(arg.real, arg.imag)
      ...
 
+   For code that dispatches on a collections type (e.g., ``list``), but wants
+   to typehint the items of the collection (e.g., ``list[int]``), the
+   dispatch type should be passed explicitly to the decorator itself with the
+   typehint going into the function definition::
+
+     >>> @fun.register(list)
+     ... def _(arg: list[int], verbose=False):
+     ...     if verbose:
+     ...         print("Enumerate this:")
+     ...     for i, elem in enumerate(arg):
+     ...         print(i, elem)
+
+   .. note::
+
+      At runtime the function will dispatch on an instance of a list regardless
+      of the type contained within the list i.e. ``[1,2,3]`` will be
+      dispatched the same as ``["foo", "bar", "baz"]``. The annotation
+      provided in this example is for static type checkers only and has no
+      runtime impact.
 
    To enable registering :term:`lambdas<lambda>` and pre-existing functions,
    the :func:`register` attribute can also be used in a functional form::
@@ -646,9 +665,11 @@ The :mod:`functools` module defines the following functions:
    attributes of the wrapper function are updated with the corresponding attributes
    from the original function. The default values for these arguments are the
    module level constants ``WRAPPER_ASSIGNMENTS`` (which assigns to the wrapper
-   function's ``__module__``, ``__name__``, ``__qualname__``, ``__annotations__``
-   and ``__doc__``, the documentation string) and ``WRAPPER_UPDATES`` (which
-   updates the wrapper function's ``__dict__``, i.e. the instance dictionary).
+   function's :attr:`~function.__module__`, :attr:`~function.__name__`,
+   :attr:`~function.__qualname__`, :attr:`~function.__annotations__`,
+   :attr:`~function.__type_params__`, and :attr:`~function.__doc__`, the
+   documentation string) and ``WRAPPER_UPDATES`` (which updates the wrapper
+   function's :attr:`~function.__dict__`, i.e. the instance dictionary).
 
    To allow access to the original function for introspection and other purposes
    (e.g. bypassing a caching decorator such as :func:`lru_cache`), this function
@@ -669,7 +690,7 @@ The :mod:`functools` module defines the following functions:
 
    .. versionchanged:: 3.2
       The ``__wrapped__`` attribute is now automatically added.
-      The ``__annotations__`` attribute is now copied by default.
+      The :attr:`~function.__annotations__` attribute is now copied by default.
       Missing attributes no longer trigger an :exc:`AttributeError`.
 
    .. versionchanged:: 3.4
@@ -677,6 +698,9 @@ The :mod:`functools` module defines the following functions:
       function, even if that function defined a ``__wrapped__`` attribute.
       (see :issue:`17482`)
 
+   .. versionchanged:: 3.12
+      The :attr:`~function.__type_params__` attribute is now copied by default.
+
 
 .. decorator:: wraps(wrapped, assigned=WRAPPER_ASSIGNMENTS, updated=WRAPPER_UPDATES)
 
@@ -737,9 +761,10 @@ have three read-only attributes:
    The keyword arguments that will be supplied when the :class:`partial` object is
    called.
 
-:class:`partial` objects are like :class:`function` objects in that they are
-callable, weak referenceable, and can have attributes.  There are some important
-differences.  For instance, the :attr:`~definition.__name__` and :attr:`__doc__` attributes
+:class:`partial` objects are like :ref:`function objects <user-defined-funcs>`
+in that they are callable, weak referenceable, and can have attributes.
+There are some important differences.  For instance, the
+:attr:`~function.__name__` and :attr:`function.__doc__` attributes
 are not created automatically.  Also, :class:`partial` objects defined in
 classes behave like static methods and do not transform into bound methods
 during instance attribute look-up.
diff --git a/Doc/library/gc.rst b/Doc/library/gc.rst
index e36a71af2b64ab..8ce850ba777e7c 100644
--- a/Doc/library/gc.rst
+++ b/Doc/library/gc.rst
@@ -1,5 +1,5 @@
-:mod:`gc` --- Garbage Collector interface
-=========================================
+:mod:`!gc` --- Garbage Collector interface
+==========================================
 
 .. module:: gc
    :synopsis: Interface to the cycle-detecting garbage collector.
@@ -42,7 +42,7 @@ The :mod:`gc` module provides the following functions:
 
    With no arguments, run a full collection.  The optional argument *generation*
    may be an integer specifying which generation to collect (from 0 to 2).  A
-   :exc:`ValueError` is raised if the generation number  is invalid. The sum of
+   :exc:`ValueError` is raised if the generation number is invalid. The sum of
    collected objects and uncollectable objects is returned.
 
    The free lists maintained for a number of built-in types are cleared
@@ -69,7 +69,7 @@ The :mod:`gc` module provides the following functions:
 .. function:: get_objects(generation=None)
 
    Returns a list of all objects tracked by the collector, excluding the list
-   returned. If *generation* is not None, return only the objects tracked by
+   returned. If *generation* is not ``None``, return only the objects tracked by
    the collector that are in that generation.
 
    .. versionchanged:: 3.8
diff --git a/Doc/library/getopt.rst b/Doc/library/getopt.rst
index ada68b240143e8..16ebb929f46002 100644
--- a/Doc/library/getopt.rst
+++ b/Doc/library/getopt.rst
@@ -1,5 +1,5 @@
-:mod:`getopt` --- C-style parser for command line options
-=========================================================
+:mod:`!getopt` --- C-style parser for command line options
+==========================================================
 
 .. module:: getopt
    :synopsis: Portable parser for command line options; support both short and
@@ -7,18 +7,13 @@
 
 **Source code:** :source:`Lib/getopt.py`
 
-.. deprecated:: 3.13
-   The :mod:`getopt` module is :term:`soft deprecated` and will not be
-   developed further; development will continue with the :mod:`argparse`
-   module.
-
 .. note::
 
-   The :mod:`getopt` module is a parser for command line options whose API is
-   designed to be familiar to users of the C :c:func:`!getopt` function. Users who
-   are unfamiliar with the C :c:func:`!getopt` function or who would like to write
-   less code and get better help and error messages should consider using the
-   :mod:`argparse` module instead.
+   This module is considered feature complete. A more declarative and
+   extensible alternative to this API is provided in the :mod:`optparse`
+   module. Further functional enhancements for command line parameter
+   processing are provided either as third party modules on PyPI,
+   or else as features in the :mod:`argparse` module.
 
 --------------
 
@@ -28,6 +23,13 @@ the special meanings of arguments of the form '``-``' and '``--``').  Long
 options similar to those supported by GNU software may be used as well via an
 optional third argument.
 
+Users who are unfamiliar with the Unix :c:func:`!getopt` function should consider
+using the :mod:`argparse` module instead. Users who are familiar with the Unix
+:c:func:`!getopt` function, but would like to get equivalent behavior while
+writing less code and getting better help and error messages should consider
+using the :mod:`optparse` module. See :ref:`choosing-an-argument-parser` for
+additional details.
+
 This module provides two functions and an
 exception:
 
@@ -97,6 +99,8 @@ exception:
 
 An example using only Unix style options:
 
+.. doctest::
+
    >>> import getopt
    >>> args = '-a -b -cfoo -d bar a1 a2'.split()
    >>> args
@@ -109,6 +113,8 @@ An example using only Unix style options:
 
 Using long option names is equally easy:
 
+.. doctest::
+
    >>> s = '--condition=foo --testing --output-file abc.def -x a1 a2'
    >>> args = s.split()
    >>> args
@@ -120,7 +126,9 @@ Using long option names is equally easy:
    >>> args
    ['a1', 'a2']
 
-In a script, typical usage is something like this::
+In a script, typical usage is something like this:
+
+.. testcode::
 
    import getopt, sys
 
@@ -144,13 +152,29 @@ In a script, typical usage is something like this::
                output = a
            else:
                assert False, "unhandled option"
-       # ...
+       process(args, output=output, verbose=verbose)
 
    if __name__ == "__main__":
        main()
 
 Note that an equivalent command line interface could be produced with less code
-and more informative help and error messages by using the :mod:`argparse` module::
+and more informative help and error messages by using the :mod:`optparse` module:
+
+.. testcode::
+
+   import optparse
+
+   if __name__ == '__main__':
+       parser = optparse.OptionParser()
+       parser.add_option('-o', '--output')
+       parser.add_option('-v', dest='verbose', action='store_true')
+       opts, args = parser.parse_args()
+       process(args, output=opts.output, verbose=opts.verbose)
+
+A roughly equivalent command line interface for this case can also be
+produced by using the :mod:`argparse` module:
+
+.. testcode::
 
    import argparse
 
@@ -158,12 +182,18 @@ and more informative help and error messages by using the :mod:`argparse` module
        parser = argparse.ArgumentParser()
        parser.add_argument('-o', '--output')
        parser.add_argument('-v', dest='verbose', action='store_true')
+       parser.add_argument('rest', nargs='*')
        args = parser.parse_args()
-       # ... do something with args.output ...
-       # ... do something with args.verbose ..
+       process(args.rest, output=args.output, verbose=args.verbose)
+
+See :ref:`choosing-an-argument-parser` for details on how the ``argparse``
+version of this code differs in behaviour from the ``optparse`` (and
+``getopt``) version.
 
 .. seealso::
 
-   Module :mod:`argparse`
-      Alternative command line option and argument parsing library.
+   Module :mod:`optparse`
+      Declarative command line option parsing.
 
+   Module :mod:`argparse`
+      More opinionated command line option and argument parsing library.
diff --git a/Doc/library/getpass.rst b/Doc/library/getpass.rst
index 54c84d45a59856..3b5296f9ec66fa 100644
--- a/Doc/library/getpass.rst
+++ b/Doc/library/getpass.rst
@@ -1,5 +1,5 @@
-:mod:`getpass` --- Portable password input
-==========================================
+:mod:`!getpass` --- Portable password input
+===========================================
 
 .. module:: getpass
    :synopsis: Portable reading of passwords and retrieval of the userid.
@@ -49,7 +49,7 @@ The :mod:`getpass` module provides two functions:
    systems which support the :mod:`pwd` module, otherwise, an :exc:`OSError`
    is raised.
 
-   In general, this function should be preferred over :func:`os.getlogin()`.
+   In general, this function should be preferred over :func:`os.getlogin`.
 
    .. versionchanged:: 3.13
       Previously, various exceptions beyond just :exc:`OSError` were raised.
diff --git a/Doc/library/gettext.rst b/Doc/library/gettext.rst
index 41beac3e0c7396..d0de83907eb297 100644
--- a/Doc/library/gettext.rst
+++ b/Doc/library/gettext.rst
@@ -1,5 +1,5 @@
-:mod:`gettext` --- Multilingual internationalization services
-=============================================================
+:mod:`!gettext` --- Multilingual internationalization services
+==============================================================
 
 .. module:: gettext
    :synopsis: Multilingual internationalization services.
diff --git a/Doc/library/glob.rst b/Doc/library/glob.rst
index ab6da98bc74ad2..684466d354aef8 100644
--- a/Doc/library/glob.rst
+++ b/Doc/library/glob.rst
@@ -1,5 +1,5 @@
-:mod:`glob` --- Unix style pathname pattern expansion
-=====================================================
+:mod:`!glob` --- Unix style pathname pattern expansion
+======================================================
 
 .. module:: glob
    :synopsis: Unix shell style pathname pattern expansion.
diff --git a/Doc/library/graphlib.rst b/Doc/library/graphlib.rst
index 5414d6370b78ce..a0b16576fad219 100644
--- a/Doc/library/graphlib.rst
+++ b/Doc/library/graphlib.rst
@@ -1,5 +1,5 @@
-:mod:`graphlib` --- Functionality to operate with graph-like structures
-=========================================================================
+:mod:`!graphlib` --- Functionality to operate with graph-like structures
+========================================================================
 
 .. module:: graphlib
    :synopsis: Functionality to operate with graph-like structures
diff --git a/Doc/library/grp.rst b/Doc/library/grp.rst
index 9cf25b7ae137a3..d1c7f22a209780 100644
--- a/Doc/library/grp.rst
+++ b/Doc/library/grp.rst
@@ -1,5 +1,5 @@
-:mod:`grp` --- The group database
-=================================
+:mod:`!grp` --- The group database
+==================================
 
 .. module:: grp
    :platform: Unix
@@ -10,7 +10,7 @@
 This module provides access to the Unix group database. It is available on all
 Unix versions.
 
-.. availability:: Unix, not WASI, not iOS.
+.. availability:: Unix, not WASI, not Android, not iOS.
 
 Group database entries are reported as a tuple-like object, whose attributes
 correspond to the members of the ``group`` structure (Attribute field below, see
diff --git a/Doc/library/gzip.rst b/Doc/library/gzip.rst
index e6106e72a83d25..6b6e158f6eba2c 100644
--- a/Doc/library/gzip.rst
+++ b/Doc/library/gzip.rst
@@ -1,5 +1,5 @@
-:mod:`gzip` --- Support for :program:`gzip` files
-=================================================
+:mod:`!gzip` --- Support for :program:`gzip` files
+==================================================
 
 .. module:: gzip
    :synopsis: Interfaces for gzip compression and decompression using file objects.
@@ -102,7 +102,7 @@ The module defines the following items:
 
    The optional *mtime* argument is the timestamp requested by gzip. The time
    is in Unix format, i.e., seconds since 00:00:00 UTC, January 1, 1970.
-   If *mtime* is omitted or None, the current time is used. Use *mtime* = 0
+   If *mtime* is omitted or ``None``, the current time is used. Use *mtime* = 0
    to generate a compressed stream that does not depend on creation time.
 
    See below for the :attr:`mtime` attribute that is set when decompressing.
@@ -188,9 +188,7 @@ The module defines the following items:
 
    Compress the *data*, returning a :class:`bytes` object containing
    the compressed data.  *compresslevel* and *mtime* have the same meaning as in
-   the :class:`GzipFile` constructor above. When *mtime* is set to ``0``, this
-   function is equivalent to :func:`zlib.compress` with *wbits* set to ``31``.
-   The zlib function is faster.
+   the :class:`GzipFile` constructor above.
 
    .. versionadded:: 3.2
    .. versionchanged:: 3.8
@@ -198,7 +196,13 @@ The module defines the following items:
    .. versionchanged:: 3.11
       Speed is improved by compressing all data at once instead of in a
       streamed fashion. Calls with *mtime* set to ``0`` are delegated to
-      :func:`zlib.compress` for better speed.
+      :func:`zlib.compress` for better speed. In this situation the
+      output may contain a gzip header "OS" byte value other than 255
+      "unknown" as supplied by the underlying zlib implementation.
+
+   .. versionchanged:: 3.13
+      The gzip header OS byte is guaranteed to be set to 255 when this function
+      is used as was the case in 3.10 and earlier.
 
 .. function:: decompress(data)
 
diff --git a/Doc/library/hashlib.rst b/Doc/library/hashlib.rst
index aa0c6fc503e8ff..dffb167c74771f 100644
--- a/Doc/library/hashlib.rst
+++ b/Doc/library/hashlib.rst
@@ -1,5 +1,5 @@
-:mod:`hashlib` --- Secure hashes and message digests
-====================================================
+:mod:`!hashlib` --- Secure hashes and message digests
+=====================================================
 
 .. module:: hashlib
    :synopsis: Secure hash and message digest algorithms.
@@ -328,7 +328,7 @@ include a `salt <https://en.wikipedia.org/wiki/Salt_%28cryptography%29>`_.
    your application, read *Appendix A.2.2* of NIST-SP-800-132_. The answers
    on the `stackexchange pbkdf2 iterations question`_ explain in detail.
 
-   *dklen* is the length of the derived key. If *dklen* is ``None`` then the
+   *dklen* is the length of the derived key in bytes. If *dklen* is ``None`` then the
    digest size of the hash algorithm *hash_name* is used, e.g. 64 for SHA-512.
 
    >>> from hashlib import pbkdf2_hmac
@@ -357,7 +357,7 @@ include a `salt <https://en.wikipedia.org/wiki/Salt_%28cryptography%29>`_.
 
    *n* is the CPU/Memory cost factor, *r* the block size, *p* parallelization
    factor and *maxmem* limits memory (OpenSSL 1.1.0 defaults to 32 MiB).
-   *dklen* is the length of the derived key.
+   *dklen* is the length of the derived key in bytes.
 
    .. versionadded:: 3.6
 
@@ -655,7 +655,7 @@ on the hash function used in digital signatures.
     by the signer.
 
     (`NIST SP-800-106 "Randomized Hashing for Digital Signatures"
-    <https://csrc.nist.gov/publications/detail/sp/800-106/archive/2009-02-25>`_)
+    <https://csrc.nist.gov/pubs/sp/800/106/final>`_)
 
 In BLAKE2 the salt is processed as a one-time input to the hash function during
 initialization, rather than as an input to each compression function.
@@ -809,8 +809,8 @@ Domain Dedication 1.0 Universal:
 .. _NIST-SP-800-132: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf
 .. _stackexchange pbkdf2 iterations question: https://security.stackexchange.com/questions/3959/recommended-of-iterations-when-using-pbkdf2-sha256/
 .. _Attacks on cryptographic hash algorithms: https://en.wikipedia.org/wiki/Cryptographic_hash_function#Attacks_on_cryptographic_hash_algorithms
-.. _the FIPS 180-4 standard: https://csrc.nist.gov/publications/detail/fips/180/4/final
-.. _the FIPS 202 standard: https://csrc.nist.gov/publications/detail/fips/202/final
+.. _the FIPS 180-4 standard: https://csrc.nist.gov/pubs/fips/180-4/upd1/final
+.. _the FIPS 202 standard: https://csrc.nist.gov/pubs/fips/202/final
 .. _HACL\* project: https://github.com/hacl-star/hacl-star
 
 
@@ -827,7 +827,7 @@ Domain Dedication 1.0 Universal:
    https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.180-4.pdf
       The FIPS 180-4 publication on Secure Hash Algorithms.
 
-   https://csrc.nist.gov/publications/detail/fips/202/final
+   https://csrc.nist.gov/pubs/fips/202/final
       The FIPS 202 publication on the SHA-3 Standard.
 
    https://www.blake2.net/
diff --git a/Doc/library/heapq.rst b/Doc/library/heapq.rst
index ad407141a2f590..d3c4b920ba500a 100644
--- a/Doc/library/heapq.rst
+++ b/Doc/library/heapq.rst
@@ -1,5 +1,5 @@
-:mod:`heapq` --- Heap queue algorithm
-=====================================
+:mod:`!heapq` --- Heap queue algorithm
+======================================
 
 .. module:: heapq
    :synopsis: Heap queue algorithm (a.k.a. priority queue).
diff --git a/Doc/library/hmac.rst b/Doc/library/hmac.rst
index 43012e03c580e8..d6692033b2d4c3 100644
--- a/Doc/library/hmac.rst
+++ b/Doc/library/hmac.rst
@@ -1,5 +1,5 @@
-:mod:`hmac` --- Keyed-Hashing for Message Authentication
-========================================================
+:mod:`!hmac` --- Keyed-Hashing for Message Authentication
+=========================================================
 
 .. module:: hmac
    :synopsis: Keyed-Hashing for Message Authentication (HMAC) implementation
diff --git a/Doc/library/html.entities.rst b/Doc/library/html.entities.rst
index 10529561a92cd0..add18e4c87d220 100644
--- a/Doc/library/html.entities.rst
+++ b/Doc/library/html.entities.rst
@@ -1,5 +1,5 @@
-:mod:`html.entities` --- Definitions of HTML general entities
-=============================================================
+:mod:`!html.entities` --- Definitions of HTML general entities
+==============================================================
 
 .. module:: html.entities
    :synopsis: Definitions of HTML general entities.
diff --git a/Doc/library/html.parser.rst b/Doc/library/html.parser.rst
index d35090111e0822..6d433b5a04fc4a 100644
--- a/Doc/library/html.parser.rst
+++ b/Doc/library/html.parser.rst
@@ -1,5 +1,5 @@
-:mod:`html.parser` --- Simple HTML and XHTML parser
-===================================================
+:mod:`!html.parser` --- Simple HTML and XHTML parser
+====================================================
 
 .. module:: html.parser
    :synopsis: A simple parser that can handle HTML and XHTML.
diff --git a/Doc/library/html.rst b/Doc/library/html.rst
index c2b01e14ea7555..9aa39ba9a42b0f 100644
--- a/Doc/library/html.rst
+++ b/Doc/library/html.rst
@@ -1,5 +1,5 @@
-:mod:`html` --- HyperText Markup Language support
-=================================================
+:mod:`!html` --- HyperText Markup Language support
+==================================================
 
 .. module:: html
    :synopsis: Helpers for manipulating HTML.
diff --git a/Doc/library/http.client.rst b/Doc/library/http.client.rst
index 7e4502064f22a1..2835c8d0eb711e 100644
--- a/Doc/library/http.client.rst
+++ b/Doc/library/http.client.rst
@@ -1,5 +1,5 @@
-:mod:`http.client` --- HTTP protocol client
-===========================================
+:mod:`!http.client` --- HTTP protocol client
+============================================
 
 .. module:: http.client
    :synopsis: HTTP and HTTPS protocol client (requires sockets).
diff --git a/Doc/library/http.cookiejar.rst b/Doc/library/http.cookiejar.rst
index 2fe188be641c2d..23ddecf873876d 100644
--- a/Doc/library/http.cookiejar.rst
+++ b/Doc/library/http.cookiejar.rst
@@ -1,5 +1,5 @@
-:mod:`http.cookiejar` --- Cookie handling for HTTP clients
-==========================================================
+:mod:`!http.cookiejar` --- Cookie handling for HTTP clients
+===========================================================
 
 .. module:: http.cookiejar
    :synopsis: Classes for automatic handling of HTTP cookies.
@@ -137,7 +137,7 @@ The following classes are provided:
       The Netscape protocol with the bugs fixed.  Uses :mailheader:`Set-Cookie2` in
       place of :mailheader:`Set-Cookie`.  Not widely used.
 
-   http://kristol.org/cookie/errata.html
+   https://kristol.org/cookie/errata.html
       Unfinished errata to :rfc:`2965`.
 
    :rfc:`2964` - Use of HTTP State Management
diff --git a/Doc/library/http.cookies.rst b/Doc/library/http.cookies.rst
index e91972fe621a48..ad37a0fca4742d 100644
--- a/Doc/library/http.cookies.rst
+++ b/Doc/library/http.cookies.rst
@@ -1,5 +1,5 @@
-:mod:`http.cookies` --- HTTP state management
-=============================================
+:mod:`!http.cookies` --- HTTP state management
+==============================================
 
 .. module:: http.cookies
    :synopsis: Support for HTTP state management (cookies).
@@ -98,7 +98,7 @@ Cookie Objects
 .. method:: BaseCookie.output(attrs=None, header='Set-Cookie:', sep='\r\n')
 
    Return a string representation suitable to be sent as HTTP headers. *attrs* and
-   *header* are sent to each :class:`Morsel`'s :meth:`output` method. *sep* is used
+   *header* are sent to each :class:`Morsel`'s :meth:`~Morsel.output` method. *sep* is used
    to join the headers together, and is by default the combination ``'\r\n'``
    (CRLF).
 
diff --git a/Doc/library/http.rst b/Doc/library/http.rst
index 998d6e73f9dd82..ce3fb9f8120502 100644
--- a/Doc/library/http.rst
+++ b/Doc/library/http.rst
@@ -1,5 +1,5 @@
-:mod:`http` --- HTTP modules
-============================
+:mod:`!http` --- HTTP modules
+=============================
 
 .. module:: http
    :synopsis: HTTP status codes and messages
diff --git a/Doc/library/http.server.rst b/Doc/library/http.server.rst
index 886e359bd8cd62..1197b575c00455 100644
--- a/Doc/library/http.server.rst
+++ b/Doc/library/http.server.rst
@@ -1,5 +1,5 @@
-:mod:`http.server` --- HTTP servers
-===================================
+:mod:`!http.server` --- HTTP servers
+====================================
 
 .. module:: http.server
    :synopsis: HTTP server and request handlers.
@@ -263,7 +263,7 @@ provides three different variants:
 
       Adds a blank line
       (indicating the end of the HTTP headers in the response)
-      to the headers buffer and calls :meth:`flush_headers()`.
+      to the headers buffer and calls :meth:`flush_headers`.
 
       .. versionchanged:: 3.2
          The buffered headers are written to the output stream.
@@ -378,7 +378,7 @@ provides three different variants:
 
       If the request was mapped to a file, it is opened. Any :exc:`OSError`
       exception in opening the requested file is mapped to a ``404``,
-      ``'File not found'`` error. If there was a ``'If-Modified-Since'``
+      ``'File not found'`` error. If there was an ``'If-Modified-Since'``
       header in the request, and the file was not modified after this time,
       a ``304``, ``'Not Modified'`` response is sent. Otherwise, the content
       type is guessed by calling the :meth:`guess_type` method, which in turn
diff --git a/Doc/library/idle.rst b/Doc/library/idle.rst
index 17a5144b4c0635..59b181aab3e484 100644
--- a/Doc/library/idle.rst
+++ b/Doc/library/idle.rst
@@ -429,7 +429,7 @@ Several non-character keys move the cursor and possibly
 delete characters.  Deletion does not puts text on the clipboard,
 but IDLE has an undo list.  Wherever this doc discusses keys,
 'C' refers to the :kbd:`Control` key on Windows and
-Unix and the :kbd:`Command` key on macOS.  (And all such dicussions
+Unix and the :kbd:`Command` key on macOS.  (And all such discussions
 assume that the keys have not been re-bound to something else.)
 
 * Arrow keys move the cursor one character or line.
diff --git a/Doc/library/imaplib.rst b/Doc/library/imaplib.rst
index ccfd0cd3dde109..a2dad58b00b9fa 100644
--- a/Doc/library/imaplib.rst
+++ b/Doc/library/imaplib.rst
@@ -1,5 +1,5 @@
-:mod:`imaplib` --- IMAP4 protocol client
-========================================
+:mod:`!imaplib` --- IMAP4 protocol client
+=========================================
 
 .. module:: imaplib
    :synopsis: IMAP4 protocol client (requires sockets).
@@ -39,7 +39,7 @@ base class:
    initialized. If *host* is not specified, ``''`` (the local host) is used. If
    *port* is omitted, the standard IMAP4 port (143) is used. The optional *timeout*
    parameter specifies a timeout in seconds for the connection attempt.
-   If timeout is not given or is None, the global default socket timeout is used.
+   If timeout is not given or is ``None``, the global default socket timeout is used.
 
    The :class:`IMAP4` class supports the :keyword:`with` statement.  When used
    like this, the IMAP4 ``LOGOUT`` command is issued automatically when the
@@ -97,7 +97,7 @@ There's also a subclass for secure connections:
    best practices.
 
    The optional *timeout* parameter specifies a timeout in seconds for the
-   connection attempt. If timeout is not given or is None, the global default
+   connection attempt. If timeout is not given or is ``None``, the global default
    socket timeout is used.
 
    .. versionchanged:: 3.3
@@ -360,7 +360,7 @@ An :class:`IMAP4` instance has the following methods:
 
    Opens socket to *port* at *host*. The optional *timeout* parameter
    specifies a timeout in seconds for the connection attempt.
-   If timeout is not given or is None, the global default socket timeout
+   If timeout is not given or is ``None``, the global default socket timeout
    is used. Also note that if the *timeout* parameter is set to be zero,
    it will raise a :class:`ValueError` to reject creating a non-blocking socket.
    This method is implicitly called by the :class:`IMAP4` constructor.
diff --git a/Doc/library/imghdr.rst b/Doc/library/imghdr.rst
new file mode 100644
index 00000000000000..56f26355f42558
--- /dev/null
+++ b/Doc/library/imghdr.rst
@@ -0,0 +1,19 @@
+:mod:`!imghdr` --- Determine the type of an image
+=================================================
+
+.. module:: imghdr
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+Possible replacements are third-party libraries from PyPI:
+:pypi:`filetype`, :pypi:`puremagic`, or :pypi:`python-magic`.
+These are not supported or maintained by the Python core team.
+
+The last version of Python that provided the :mod:`!imghdr` module was
+`Python 3.12 <https://docs.python.org/3.12/library/imghdr.html>`_.
diff --git a/Doc/library/imp.rst b/Doc/library/imp.rst
new file mode 100644
index 00000000000000..3dc4c568b1ae2f
--- /dev/null
+++ b/Doc/library/imp.rst
@@ -0,0 +1,18 @@
+:mod:`!imp` --- Access the import internals
+===========================================
+
+.. module:: imp
+   :synopsis: Removed in 3.12.
+   :deprecated:
+
+.. deprecated-removed:: 3.4 3.12
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.12 <whatsnew312-removed-imp>` after
+being deprecated in Python 3.4.
+
+The :ref:`removal notice <whatsnew312-removed-imp>` includes guidance for
+migrating code from :mod:`!imp` to :mod:`importlib`.
+
+The last version of Python that provided the :mod:`!imp` module was
+`Python 3.11 <https://docs.python.org/3.11/library/imp.html>`_.
diff --git a/Doc/library/importlib.metadata.rst b/Doc/library/importlib.metadata.rst
index 674ce5807fdf11..c38da0bd341fc9 100644
--- a/Doc/library/importlib.metadata.rst
+++ b/Doc/library/importlib.metadata.rst
@@ -100,6 +100,13 @@ You can also get a :ref:`distribution's version number <version>`, list its
 :ref:`requirements`.
 
 
+.. exception:: PackageNotFoundError
+
+   Subclass of :class:`ModuleNotFoundError` raised by several functions in this
+   module when queried for a distribution package which is not installed in the
+   current Python environment.
+
+
 Functional API
 ==============
 
@@ -111,31 +118,53 @@ This package provides the following functionality via its public API.
 Entry points
 ------------
 
-The ``entry_points()`` function returns a collection of entry points.
-Entry points are represented by ``EntryPoint`` instances;
-each ``EntryPoint`` has a ``.name``, ``.group``, and ``.value`` attributes and
-a ``.load()`` method to resolve the value.  There are also ``.module``,
-``.attr``, and ``.extras`` attributes for getting the components of the
-``.value`` attribute.
+.. function:: entry_points(**select_params)
+
+   Returns a :class:`EntryPoints` instance describing entry points for the
+   current environment. Any given keyword parameters are passed to the
+   :meth:`!select` method for comparison to the attributes of
+   the individual entry point definitions.
+
+   Note: it is not currently possible to query for entry points based on
+   their :attr:`!EntryPoint.dist` attribute (as different :class:`!Distribution`
+   instances do not currently compare equal, even if they have the same attributes)
+
+.. class:: EntryPoints
+
+   Details of a collection of installed entry points.
+
+   Also provides a ``.groups`` attribute that reports all identified entry
+   point groups, and a ``.names`` attribute that reports all identified entry
+   point names.
+
+.. class:: EntryPoint
+
+   Details of an installed entry point.
+
+   Each :class:`!EntryPoint` instance has ``.name``, ``.group``, and ``.value``
+   attributes and a ``.load()`` method to resolve the value. There are also
+   ``.module``, ``.attr``, and ``.extras`` attributes for getting the
+   components of the ``.value`` attribute, and ``.dist`` for obtaining
+   information regarding the distribution package that provides the entry point.
 
 Query all entry points::
 
     >>> eps = entry_points()  # doctest: +SKIP
 
-The ``entry_points()`` function returns an ``EntryPoints`` object,
-a collection of all ``EntryPoint`` objects with ``names`` and ``groups``
+The :func:`!entry_points` function returns a :class:`!EntryPoints` object,
+a collection of all :class:`!EntryPoint` objects with ``names`` and ``groups``
 attributes for convenience::
 
     >>> sorted(eps.groups)  # doctest: +SKIP
     ['console_scripts', 'distutils.commands', 'distutils.setup_keywords', 'egg_info.writers', 'setuptools.installation']
 
-``EntryPoints`` has a ``select`` method to select entry points
+:class:`!EntryPoints` has a :meth:`!select` method to select entry points
 matching specific properties. Select entry points in the
 ``console_scripts`` group::
 
     >>> scripts = eps.select(group='console_scripts')  # doctest: +SKIP
 
-Equivalently, since ``entry_points`` passes keyword arguments
+Equivalently, since :func:`!entry_points` passes keyword arguments
 through to select::
 
     >>> scripts = entry_points(group='console_scripts')  # doctest: +SKIP
@@ -189,31 +218,41 @@ for more information on entry points, their definition, and usage.
 Distribution metadata
 ---------------------
 
-Every `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_ includes some metadata,
-which you can extract using the
-``metadata()`` function::
+.. function:: metadata(distribution_name)
+
+   Return the distribution metadata corresponding to the named
+   distribution package as a :class:`PackageMetadata` instance.
+
+   Raises :exc:`PackageNotFoundError` if the named distribution
+   package is not installed in the current Python environment.
+
+.. class:: PackageMetadata
+
+   A concrete implementation of the
+   `PackageMetadata protocol <https://importlib-metadata.readthedocs.io/en/latest/api.html#importlib_metadata.PackageMetadata>`_.
+
+   In addition to providing the defined protocol methods and attributes, subscripting
+   the instance is equivalent to calling the :meth:`!get` method.
+
+Every `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_
+includes some metadata, which you can extract using the :func:`!metadata` function::
 
     >>> wheel_metadata = metadata('wheel')  # doctest: +SKIP
 
-The keys of the returned data structure, a ``PackageMetadata``,
-name the metadata keywords, and
+The keys of the returned data structure name the metadata keywords, and
 the values are returned unparsed from the distribution metadata::
 
     >>> wheel_metadata['Requires-Python']  # doctest: +SKIP
     '>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*'
 
-``PackageMetadata`` also presents a ``json`` attribute that returns
+:class:`PackageMetadata` also presents a :attr:`!json` attribute that returns
 all the metadata in a JSON-compatible form per :PEP:`566`::
 
     >>> wheel_metadata.json['requires_python']
     '>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*'
 
-.. note::
-
-    The actual type of the object returned by ``metadata()`` is an
-    implementation detail and should be accessed only through the interface
-    described by the
-    `PackageMetadata protocol <https://importlib-metadata.readthedocs.io/en/latest/api.html#importlib_metadata.PackageMetadata>`_.
+The full set of available metadata is not described here.
+See the PyPA `Core metadata specification <https://packaging.python.org/en/latest/specifications/core-metadata/#core-metadata>`_ for additional details.
 
 .. versionchanged:: 3.10
    The ``Description`` is now included in the metadata when presented
@@ -227,7 +266,15 @@ all the metadata in a JSON-compatible form per :PEP:`566`::
 Distribution versions
 ---------------------
 
-The ``version()`` function is the quickest way to get a
+.. function:: version(distribution_name)
+
+   Return the installed distribution package version for the named
+   distribution package.
+
+   Raises :exc:`PackageNotFoundError` if the named distribution
+   package is not installed in the current Python environment.
+
+The :func:`!version` function is the quickest way to get a
 `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_'s version
 number, as a string::
 
@@ -240,12 +287,28 @@ number, as a string::
 Distribution files
 ------------------
 
-You can also get the full set of files contained within a distribution.  The
-``files()`` function takes a `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_ name
-and returns all of the
-files installed by this distribution.  Each file object returned is a
-``PackagePath``, a :class:`pathlib.PurePath` derived object with additional ``dist``,
-``size``, and ``hash`` properties as indicated by the metadata.  For example::
+.. function:: files(distribution_name)
+
+   Return the full set of files contained within the named
+   distribution package.
+
+   Raises :exc:`PackageNotFoundError` if the named distribution
+   package is not installed in the current Python environment.
+
+   Returns :const:`None` if the distribution is found but the installation
+   database records reporting the files associated with the distribuion package
+   are missing.
+
+.. class:: PackagePath
+
+    A :class:`pathlib.PurePath` derived object with additional ``dist``,
+    ``size``, and ``hash`` properties corresponding to the distribution
+    package's installation metadata for that file.
+
+The :func:`!files` function takes a
+`Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_
+name and returns all of the files installed by this distribution. Each file is reported
+as a :class:`PackagePath` instance. For example::
 
     >>> util = [p for p in files('wheel') if 'util.py' in str(p)][0]  # doctest: +SKIP
     >>> util  # doctest: +SKIP
@@ -268,16 +331,16 @@ Once you have the file, you can also read its contents::
             return s.encode('utf-8')
         return s
 
-You can also use the ``locate`` method to get a the absolute path to the
-file::
+You can also use the :meth:`!locate` method to get the absolute
+path to the file::
 
     >>> util.locate()  # doctest: +SKIP
     PosixPath('/home/gustav/example/lib/site-packages/wheel/util.py')
 
 In the case where the metadata file listing files
-(RECORD or SOURCES.txt) is missing, ``files()`` will
-return ``None``. The caller may wish to wrap calls to
-``files()`` in `always_iterable
+(``RECORD`` or ``SOURCES.txt``) is missing, :func:`!files` will
+return :const:`None`. The caller may wish to wrap calls to
+:func:`!files` in `always_iterable
 <https://more-itertools.readthedocs.io/en/stable/api.html#more_itertools.always_iterable>`_
 or otherwise guard against this condition if the target
 distribution is not known to have the metadata present.
@@ -287,8 +350,16 @@ distribution is not known to have the metadata present.
 Distribution requirements
 -------------------------
 
+.. function:: requires(distribution_name)
+
+   Return the declared dependency specifiers for the named
+   distribution package.
+
+   Raises :exc:`PackageNotFoundError` if the named distribution
+   package is not installed in the current Python environment.
+
 To get the full set of requirements for a `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_,
-use the ``requires()``
+use the :func:`!requires`
 function::
 
     >>> requires('wheel')  # doctest: +SKIP
@@ -301,6 +372,16 @@ function::
 Mapping import to distribution packages
 ---------------------------------------
 
+.. function:: packages_distributions()
+
+   Return a mapping from the top level module and import package
+   names found via :attr:`sys.meta_path` to the names of the distribution
+   packages (if any) that provide the corresponding files.
+
+   To allow for namespace packages (which may have members provided by
+   multiple distribution packages), each top level import name maps to a
+   list of distribution names rather than mapping directly to a single name.
+
 A convenience method to resolve the `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_
 name (or names, in the case of a namespace package)
 that provide each importable top-level
@@ -320,37 +401,56 @@ function is not reliable with such installs.
 Distributions
 =============
 
-While the above API is the most common and convenient usage, you can get all
-of that information from the ``Distribution`` class.  A ``Distribution`` is an
-abstract object that represents the metadata for
-a Python `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_.  You can
-get the ``Distribution`` instance::
+.. function:: distribution(distribution_name)
+
+   Return a :class:`Distribution` instance describing the named
+   distribution package.
+
+   Raises :exc:`PackageNotFoundError` if the named distribution
+   package is not installed in the current Python environment.
+
+.. class:: Distribution
+
+   Details of an installed distribution package.
+
+   Note: different :class:`!Distribution` instances do not currently compare
+   equal, even if they relate to the same installed distribution and
+   accordingly have the same attributes.
+
+While the module level API described above is the most common and convenient usage,
+you can get all of that information from the :class:`!Distribution` class.
+:class:`!Distribution` is an abstract object that represents the metadata for
+a Python `Distribution Package <https://packaging.python.org/en/latest/glossary/#term-Distribution-Package>`_.
+You can get the concreate :class:`!Distribution` subclass instance for an installed
+distribution package by calling the :func:`distribution` function::
 
     >>> from importlib.metadata import distribution  # doctest: +SKIP
     >>> dist = distribution('wheel')  # doctest: +SKIP
+    >>> type(dist)  # doctest: +SKIP
+    <class 'importlib.metadata.PathDistribution'>
 
 Thus, an alternative way to get the version number is through the
-``Distribution`` instance::
+:class:`!Distribution` instance::
 
     >>> dist.version  # doctest: +SKIP
     '0.32.3'
 
-There are all kinds of additional metadata available on the ``Distribution``
-instance::
+There are all kinds of additional metadata available on :class:`!Distribution`
+instances::
 
     >>> dist.metadata['Requires-Python']  # doctest: +SKIP
     '>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*'
     >>> dist.metadata['License']  # doctest: +SKIP
     'MIT'
 
-For editable packages, an origin property may present :pep:`610`
+For editable packages, an ``origin`` property may present :pep:`610`
 metadata::
 
     >>> dist.origin.url
     'file:///path/to/wheel-0.32.3.editable-py3-none-any.whl'
 
 The full set of available metadata is not described here.
-See the `Core metadata specifications <https://packaging.python.org/en/latest/specifications/core-metadata/#core-metadata>`_ for additional details.
+See the PyPA `Core metadata specification <https://packaging.python.org/en/latest/specifications/core-metadata/#core-metadata>`_ for additional details.
 
 .. versionadded:: 3.13
    The ``.origin`` property was added.
@@ -455,7 +555,7 @@ path.
 
 ``DatabaseDistribution``, then, would look something like::
 
-    class DatabaseDistribution(importlib.metadata.Distributon):
+    class DatabaseDistribution(importlib.metadata.Distribution):
         def __init__(self, record):
             self.record = record
 
diff --git a/Doc/library/importlib.resources.abc.rst b/Doc/library/importlib.resources.abc.rst
index c25c48530722e6..4085bdf6598d98 100644
--- a/Doc/library/importlib.resources.abc.rst
+++ b/Doc/library/importlib.resources.abc.rst
@@ -1,5 +1,5 @@
-:mod:`importlib.resources.abc` -- Abstract base classes for resources
----------------------------------------------------------------------
+:mod:`!importlib.resources.abc` -- Abstract base classes for resources
+----------------------------------------------------------------------
 
 .. module:: importlib.resources.abc
     :synopsis: Abstract base classes for resources
@@ -22,7 +22,7 @@
     something like a data file that lives next to the ``__init__.py``
     file of the package. The purpose of this class is to help abstract
     out the accessing of such data files so that it does not matter if
-    the package and its data file(s) are stored in a e.g. zip file
+    the package and its data file(s) are stored e.g. in a zip file
     versus on the file system.
 
     For any of methods of this class, a *resource* argument is
@@ -43,7 +43,7 @@
     :const:`None`. An object compatible with this ABC should only be
     returned when the specified module is a package.
 
-    .. deprecated-removed:: 3.12 3.14
+    .. deprecated:: 3.12
        Use :class:`importlib.resources.abc.TraversableResources` instead.
 
     .. abstractmethod:: open_resource(resource)
@@ -103,11 +103,11 @@
 
     .. abstractmethod:: is_dir()
 
-       Return True if self is a directory.
+       Return ``True`` if self is a directory.
 
     .. abstractmethod:: is_file()
 
-       Return True if self is a file.
+       Return ``True`` if self is a file.
 
     .. abstractmethod:: joinpath(*pathsegments)
 
diff --git a/Doc/library/importlib.resources.rst b/Doc/library/importlib.resources.rst
index 9a5e4c76e7bd8f..e002198899c8b8 100644
--- a/Doc/library/importlib.resources.rst
+++ b/Doc/library/importlib.resources.rst
@@ -1,5 +1,5 @@
-:mod:`importlib.resources` -- Package resource reading, opening and access
---------------------------------------------------------------------------
+:mod:`!importlib.resources` -- Package resource reading, opening and access
+---------------------------------------------------------------------------
 
 .. module:: importlib.resources
     :synopsis: Package resource reading, opening, and access
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index b58ef359378e4f..03bd8b144d4c62 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -249,7 +249,7 @@ ABC hierarchy::
       An abstract method for finding a :term:`spec <module spec>` for
       the specified module.  If this is a top-level import, *path* will
       be ``None``.  Otherwise, this is a search for a subpackage or
-      module and *path* will be the value of :attr:`__path__` from the
+      module and *path* will be the value of :attr:`~module.__path__` from the
       parent package. If a spec cannot be found, ``None`` is returned.
       When passed in, ``target`` is a module object that the finder may
       use to make a more educated guess about what spec to return.
@@ -355,34 +355,12 @@ ABC hierarchy::
         (note that some of these attributes can change when a module is
         reloaded):
 
-        - :attr:`__name__`
-            The module's fully qualified name.
-            It is ``'__main__'`` for an executed module.
-
-        - :attr:`__file__`
-            The location the :term:`loader` used to load the module.
-            For example, for modules loaded from a .py file this is the filename.
-            It is not set on all modules (e.g. built-in modules).
-
-        - :attr:`__cached__`
-            The filename of a compiled version of the module's code.
-            It is not set on all modules (e.g. built-in modules).
-
-        - :attr:`__path__`
-            The list of locations where the package's submodules will be found.
-            Most of the time this is a single directory.
-            The import system passes this attribute to ``__import__()`` and to finders
-            in the same way as :data:`sys.path` but just for the package.
-            It is not set on non-package modules so it can be used
-            as an indicator that the module is a package.
-
-        - :attr:`__package__`
-            The fully qualified name of the package the module is in (or the
-            empty string for a top-level module).
-            If the module is a package then this is the same as :attr:`__name__`.
-
-        - :attr:`__loader__`
-            The :term:`loader` used to load the module.
+        - :attr:`module.__name__`
+        - :attr:`module.__file__`
+        - :attr:`module.__cached__` *(deprecated)*
+        - :attr:`module.__path__`
+        - :attr:`module.__package__` *(deprecated)*
+        - :attr:`module.__loader__` *(deprecated)*
 
         When :meth:`exec_module` is available then backwards-compatible
         functionality is provided.
@@ -402,13 +380,15 @@ ABC hierarchy::
 
 .. class:: ResourceLoader
 
+   *Superseded by TraversableResources*
+
     An abstract base class for a :term:`loader` which implements the optional
     :pep:`302` protocol for loading arbitrary resources from the storage
     back-end.
 
     .. deprecated:: 3.7
        This ABC is deprecated in favour of supporting resource loading
-       through :class:`importlib.resources.abc.ResourceReader`.
+       through :class:`importlib.resources.abc.TraversableResources`.
 
     .. abstractmethod:: get_data(path)
 
@@ -418,7 +398,8 @@ ABC hierarchy::
         can implement this abstract method to give direct access
         to the data stored. :exc:`OSError` is to be raised if the *path* cannot
         be found. The *path* is expected to be constructed using a module's
-        :attr:`__file__` attribute or an item from a package's :attr:`__path__`.
+        :attr:`~module.__file__` attribute or an item from a package's
+        :attr:`~module.__path__`.
 
         .. versionchanged:: 3.4
            Raises :exc:`OSError` instead of :exc:`NotImplementedError`.
@@ -505,9 +486,9 @@ ABC hierarchy::
 
     .. abstractmethod:: get_filename(fullname)
 
-        An abstract method that is to return the value of :attr:`__file__` for
-        the specified module. If no path is available, :exc:`ImportError` is
-        raised.
+        An abstract method that is to return the value of
+        :attr:`~module.__file__` for the specified module. If no path is
+        available, :exc:`ImportError` is raised.
 
         If source code is available, then the method should return the path to
         the source file, regardless of whether a bytecode was used to load the
@@ -657,7 +638,7 @@ ABC hierarchy::
     something like a data file that lives next to the ``__init__.py``
     file of the package. The purpose of this class is to help abstract
     out the accessing of such data files so that it does not matter if
-    the package and its data file(s) are stored in a e.g. zip file
+    the package and its data file(s) are stored e.g. in a zip file
     versus on the file system.
 
     For any of methods of this class, a *resource* argument is
@@ -1166,79 +1147,74 @@ find and load modules.
 .. class:: ModuleSpec(name, loader, *, origin=None, loader_state=None, is_package=None)
 
    A specification for a module's import-system-related state.  This is
-   typically exposed as the module's :attr:`__spec__` attribute.  In the
-   descriptions below, the names in parentheses give the corresponding
-   attribute available directly on the module object,
-   e.g. ``module.__spec__.origin == module.__file__``.  Note, however, that
+   typically exposed as the module's :attr:`~module.__spec__` attribute.  Many
+   of these attributes are also available directly on a module: for example,
+   ``module.__spec__.origin == module.__file__``.  Note, however, that
    while the *values* are usually equivalent, they can differ since there is
-   no synchronization between the two objects.  For example, it is possible to update
-   the module's :attr:`__file__` at runtime and this will not be automatically
-   reflected in the module's :attr:`__spec__.origin`, and vice versa.
+   no synchronization between the two objects.  For example, it is possible to
+   update the module's :attr:`~module.__file__` at runtime and this will not be
+   automatically reflected in the module's
+   :attr:`__spec__.origin <ModuleSpec.origin>`, and vice versa.
 
    .. versionadded:: 3.4
 
    .. attribute:: name
 
-   (:attr:`__name__`)
-
-   The module's fully qualified name.
-   The :term:`finder` should always set this attribute to a non-empty string.
+      The module's fully qualified name (see :attr:`module.__name__`).
+      The :term:`finder` should always set this attribute to a non-empty string.
 
    .. attribute:: loader
 
-   (:attr:`__loader__`)
-
-   The :term:`loader` used to load the module.
-   The :term:`finder` should always set this attribute.
+      The :term:`loader` used to load the module (see :attr:`module.__loader__`).
+      The :term:`finder` should always set this attribute.
 
    .. attribute:: origin
 
-   (:attr:`__file__`)
-
-   The location the :term:`loader` should use to load the module.
-   For example, for modules loaded from a .py file this is the filename.
-   The :term:`finder` should always set this attribute to a meaningful value
-   for the :term:`loader` to use.  In the uncommon case that there is not one
-   (like for namespace packages), it should be set to ``None``.
+      The location the :term:`loader` should use to load the module
+      (see :attr:`module.__file__`).
+      For example, for modules loaded from a ``.py`` file this is the filename.
+      The :term:`finder` should always set this attribute to a meaningful value
+      for the :term:`loader` to use.  In the uncommon case that there is not one
+      (like for namespace packages), it should be set to ``None``.
 
    .. attribute:: submodule_search_locations
 
-   (:attr:`__path__`)
+      A (possibly empty) :term:`sequence` of strings enumerating the locations
+      in which a package's submodules will be found
+      (see :attr:`module.__path__`). Most of the time there will only be a
+      single directory in this list.
 
-   The list of locations where the package's submodules will be found.
-   Most of the time this is a single directory.
-   The :term:`finder` should set this attribute to a list, even an empty one, to indicate
-   to the import system that the module is a package.  It should be set to ``None`` for
-   non-package modules.  It is set automatically later to a special object for
-   namespace packages.
+      The :term:`finder` should set this attribute to a sequence, even an empty
+      one, to indicate
+      to the import system that the module is a package.  It should be set to ``None`` for
+      non-package modules.  It is set automatically later to a special object for
+      namespace packages.
 
    .. attribute:: loader_state
 
-   The :term:`finder` may set this attribute to an object containing additional,
-   module-specific data to use when loading the module.  Otherwise it should be
-   set to ``None``.
+      The :term:`finder` may set this attribute to an object containing additional,
+      module-specific data to use when loading the module.  Otherwise it should be
+      set to ``None``.
 
    .. attribute:: cached
 
-   (:attr:`__cached__`)
-
-   The filename of a compiled version of the module's code.
-   The :term:`finder` should always set this attribute but it may be ``None``
-   for modules that do not need compiled code stored.
+      The filename of a compiled version of the module's code
+      (see :attr:`module.__cached__`).
+      The :term:`finder` should always set this attribute but it may be ``None``
+      for modules that do not need compiled code stored.
 
    .. attribute:: parent
 
-   (:attr:`__package__`)
-
-   (Read-only) The fully qualified name of the package the module is in (or the
-   empty string for a top-level module).
-   If the module is a package then this is the same as :attr:`name`.
+      (Read-only) The fully qualified name of the package the module is in (or the
+      empty string for a top-level module).
+      See :attr:`module.__package__`.
+      If the module is a package then this is the same as :attr:`name`.
 
    .. attribute:: has_location
 
-   ``True`` if the spec's :attr:`origin` refers to a loadable location,
-    ``False`` otherwise.  This value impacts how :attr:`origin` is interpreted
-    and how the module's :attr:`__file__` is populated.
+      ``True`` if the spec's :attr:`origin` refers to a loadable location,
+      ``False`` otherwise.  This value impacts how :attr:`!origin` is interpreted
+      and how the module's :attr:`~module.__file__` is populated.
 
 
 .. class:: AppleFrameworkLoader(name, path)
@@ -1252,7 +1228,7 @@ find and load modules.
    be only a single binary per framework, and there can be no executable binary
    material outside the Frameworks folder.
 
-   To accomodate this requirement, when running on iOS, extension module
+   To accommodate this requirement, when running on iOS, extension module
    binaries are *not* packaged as ``.so`` files on ``sys.path``, but as
    individual standalone frameworks. To discover those frameworks, this loader
    is be registered against the ``.fwork`` file extension, with a ``.fwork``
@@ -1423,8 +1399,8 @@ an :term:`importer`.
 
    .. versionchanged:: 3.7
       Raises :exc:`ModuleNotFoundError` instead of :exc:`AttributeError` if
-      **package** is in fact not a package (i.e. lacks a :attr:`__path__`
-      attribute).
+      **package** is in fact not a package (i.e. lacks a
+      :attr:`~module.__path__` attribute).
 
 .. function:: module_from_spec(spec)
 
@@ -1584,20 +1560,34 @@ Note that if ``name`` is a submodule (contains a dot),
 Importing a source file directly
 ''''''''''''''''''''''''''''''''
 
-To import a Python source file directly, use the following recipe::
+This recipe should be used with caution: it is an approximation of an import
+statement where the file path is specified directly, rather than
+:data:`sys.path` being searched. Alternatives should first be considered first,
+such as modifying :data:`sys.path` when a proper module is required, or using
+:func:`runpy.run_path` when the global namespace resulting from running a Python
+file is appropriate.
 
-  import importlib.util
-  import sys
+To import a Python source file directly from a path, use the following recipe::
 
-  # For illustrative purposes.
-  import tokenize
-  file_path = tokenize.__file__
-  module_name = tokenize.__name__
+    import importlib.util
+    import sys
 
-  spec = importlib.util.spec_from_file_location(module_name, file_path)
-  module = importlib.util.module_from_spec(spec)
-  sys.modules[module_name] = module
-  spec.loader.exec_module(module)
+
+    def import_from_path(module_name, file_path):
+        spec = importlib.util.spec_from_file_location(module_name, file_path)
+        module = importlib.util.module_from_spec(spec)
+        sys.modules[module_name] = module
+        spec.loader.exec_module(module)
+        return module
+
+
+    # For illustrative purposes only (use of `json` is arbitrary).
+    import json
+    file_path = json.__file__
+    module_name = json.__name__
+
+    # Similar outcome as `import json`.
+    json = import_from_path(module_name, file_path)
 
 
 Implementing lazy imports
@@ -1623,7 +1613,6 @@ The example below shows how to implement lazy imports::
     False
 
 
-
 Setting up an importer
 ''''''''''''''''''''''
 
diff --git a/Doc/library/index.rst b/Doc/library/index.rst
index 0b348ae6f5c8c0..44b218948d07e1 100644
--- a/Doc/library/index.rst
+++ b/Doc/library/index.rst
@@ -55,6 +55,7 @@ the `Python Package Index <https://pypi.org>`_.
    fileformats.rst
    crypto.rst
    allos.rst
+   cmdlinelibs.rst
    concurrency.rst
    ipc.rst
    netdata.rst
@@ -75,4 +76,5 @@ the `Python Package Index <https://pypi.org>`_.
    unix.rst
    cmdline.rst
    superseded.rst
+   removed.rst
    security_warnings.rst
diff --git a/Doc/library/inspect.rst b/Doc/library/inspect.rst
index 4a0a090facb8bb..7ed39ae2fec3c3 100644
--- a/Doc/library/inspect.rst
+++ b/Doc/library/inspect.rst
@@ -1,5 +1,5 @@
-:mod:`inspect` --- Inspect live objects
-=======================================
+:mod:`!inspect` --- Inspect live objects
+========================================
 
 .. testsetup:: *
 
@@ -42,220 +42,233 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
 .. this function name is too big to fit in the ascii-art table below
 .. |coroutine-origin-link| replace:: :func:`sys.set_coroutine_origin_tracking_depth`
 
-+-----------+-------------------+---------------------------+
-| Type      | Attribute         | Description               |
-+===========+===================+===========================+
-| class     | __doc__           | documentation string      |
-+-----------+-------------------+---------------------------+
-|           | __name__          | name with which this      |
-|           |                   | class was defined         |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | __module__        | name of module in which   |
-|           |                   | this class was defined    |
-+-----------+-------------------+---------------------------+
-|           | __type_params__   | A tuple containing the    |
-|           |                   | :ref:`type parameters     |
-|           |                   | <type-params>` of         |
-|           |                   | a generic class           |
-+-----------+-------------------+---------------------------+
-| method    | __doc__           | documentation string      |
-+-----------+-------------------+---------------------------+
-|           | __name__          | name with which this      |
-|           |                   | method was defined        |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | __func__          | function object           |
-|           |                   | containing implementation |
-|           |                   | of method                 |
-+-----------+-------------------+---------------------------+
-|           | __self__          | instance to which this    |
-|           |                   | method is bound, or       |
-|           |                   | ``None``                  |
-+-----------+-------------------+---------------------------+
-|           | __module__        | name of module in which   |
-|           |                   | this method was defined   |
-+-----------+-------------------+---------------------------+
-| function  | __doc__           | documentation string      |
-+-----------+-------------------+---------------------------+
-|           | __name__          | name with which this      |
-|           |                   | function was defined      |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | __code__          | code object containing    |
-|           |                   | compiled function         |
-|           |                   | :term:`bytecode`          |
-+-----------+-------------------+---------------------------+
-|           | __defaults__      | tuple of any default      |
-|           |                   | values for positional or  |
-|           |                   | keyword parameters        |
-+-----------+-------------------+---------------------------+
-|           | __kwdefaults__    | mapping of any default    |
-|           |                   | values for keyword-only   |
-|           |                   | parameters                |
-+-----------+-------------------+---------------------------+
-|           | __globals__       | global namespace in which |
-|           |                   | this function was defined |
-+-----------+-------------------+---------------------------+
-|           | __builtins__      | builtins namespace        |
-+-----------+-------------------+---------------------------+
-|           | __annotations__   | mapping of parameters     |
-|           |                   | names to annotations;     |
-|           |                   | ``"return"`` key is       |
-|           |                   | reserved for return       |
-|           |                   | annotations.              |
-+-----------+-------------------+---------------------------+
-|           | __type_params__   | A tuple containing the    |
-|           |                   | :ref:`type parameters     |
-|           |                   | <type-params>` of         |
-|           |                   | a generic function        |
-+-----------+-------------------+---------------------------+
-|           | __module__        | name of module in which   |
-|           |                   | this function was defined |
-+-----------+-------------------+---------------------------+
-| traceback | tb_frame          | frame object at this      |
-|           |                   | level                     |
-+-----------+-------------------+---------------------------+
-|           | tb_lasti          | index of last attempted   |
-|           |                   | instruction in bytecode   |
-+-----------+-------------------+---------------------------+
-|           | tb_lineno         | current line number in    |
-|           |                   | Python source code        |
-+-----------+-------------------+---------------------------+
-|           | tb_next           | next inner traceback      |
-|           |                   | object (called by this    |
-|           |                   | level)                    |
-+-----------+-------------------+---------------------------+
-| frame     | f_back            | next outer frame object   |
-|           |                   | (this frame's caller)     |
-+-----------+-------------------+---------------------------+
-|           | f_builtins        | builtins namespace seen   |
-|           |                   | by this frame             |
-+-----------+-------------------+---------------------------+
-|           | f_code            | code object being         |
-|           |                   | executed in this frame    |
-+-----------+-------------------+---------------------------+
-|           | f_globals         | global namespace seen by  |
-|           |                   | this frame                |
-+-----------+-------------------+---------------------------+
-|           | f_lasti           | index of last attempted   |
-|           |                   | instruction in bytecode   |
-+-----------+-------------------+---------------------------+
-|           | f_lineno          | current line number in    |
-|           |                   | Python source code        |
-+-----------+-------------------+---------------------------+
-|           | f_locals          | local namespace seen by   |
-|           |                   | this frame                |
-+-----------+-------------------+---------------------------+
-|           | f_trace           | tracing function for this |
-|           |                   | frame, or ``None``        |
-+-----------+-------------------+---------------------------+
-| code      | co_argcount       | number of arguments (not  |
-|           |                   | including keyword only    |
-|           |                   | arguments, \* or \*\*     |
-|           |                   | args)                     |
-+-----------+-------------------+---------------------------+
-|           | co_code           | string of raw compiled    |
-|           |                   | bytecode                  |
-+-----------+-------------------+---------------------------+
-|           | co_cellvars       | tuple of names of cell    |
-|           |                   | variables (referenced by  |
-|           |                   | containing scopes)        |
-+-----------+-------------------+---------------------------+
-|           | co_consts         | tuple of constants used   |
-|           |                   | in the bytecode           |
-+-----------+-------------------+---------------------------+
-|           | co_filename       | name of file in which     |
-|           |                   | this code object was      |
-|           |                   | created                   |
-+-----------+-------------------+---------------------------+
-|           | co_firstlineno    | number of first line in   |
-|           |                   | Python source code        |
-+-----------+-------------------+---------------------------+
-|           | co_flags          | bitmap of ``CO_*`` flags, |
-|           |                   | read more :ref:`here      |
-|           |                   | <inspect-module-co-flags>`|
-+-----------+-------------------+---------------------------+
-|           | co_lnotab         | encoded mapping of line   |
-|           |                   | numbers to bytecode       |
-|           |                   | indices                   |
-+-----------+-------------------+---------------------------+
-|           | co_freevars       | tuple of names of free    |
-|           |                   | variables (referenced via |
-|           |                   | a function's closure)     |
-+-----------+-------------------+---------------------------+
-|           | co_posonlyargcount| number of positional only |
-|           |                   | arguments                 |
-+-----------+-------------------+---------------------------+
-|           | co_kwonlyargcount | number of keyword only    |
-|           |                   | arguments (not including  |
-|           |                   | \*\* arg)                 |
-+-----------+-------------------+---------------------------+
-|           | co_name           | name with which this code |
-|           |                   | object was defined        |
-+-----------+-------------------+---------------------------+
-|           | co_qualname       | fully qualified name with |
-|           |                   | which this code object    |
-|           |                   | was defined               |
-+-----------+-------------------+---------------------------+
-|           | co_names          | tuple of names other      |
-|           |                   | than arguments and        |
-|           |                   | function locals           |
-+-----------+-------------------+---------------------------+
-|           | co_nlocals        | number of local variables |
-+-----------+-------------------+---------------------------+
-|           | co_stacksize      | virtual machine stack     |
-|           |                   | space required            |
-+-----------+-------------------+---------------------------+
-|           | co_varnames       | tuple of names of         |
-|           |                   | arguments and local       |
-|           |                   | variables                 |
-+-----------+-------------------+---------------------------+
-| generator | __name__          | name                      |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | gi_frame          | frame                     |
-+-----------+-------------------+---------------------------+
-|           | gi_running        | is the generator running? |
-+-----------+-------------------+---------------------------+
-|           | gi_code           | code                      |
-+-----------+-------------------+---------------------------+
-|           | gi_yieldfrom      | object being iterated by  |
-|           |                   | ``yield from``, or        |
-|           |                   | ``None``                  |
-+-----------+-------------------+---------------------------+
-| coroutine | __name__          | name                      |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | cr_await          | object being awaited on,  |
-|           |                   | or ``None``               |
-+-----------+-------------------+---------------------------+
-|           | cr_frame          | frame                     |
-+-----------+-------------------+---------------------------+
-|           | cr_running        | is the coroutine running? |
-+-----------+-------------------+---------------------------+
-|           | cr_code           | code                      |
-+-----------+-------------------+---------------------------+
-|           | cr_origin         | where coroutine was       |
-|           |                   | created, or ``None``. See |
-|           |                   | |coroutine-origin-link|   |
-+-----------+-------------------+---------------------------+
-| builtin   | __doc__           | documentation string      |
-+-----------+-------------------+---------------------------+
-|           | __name__          | original name of this     |
-|           |                   | function or method        |
-+-----------+-------------------+---------------------------+
-|           | __qualname__      | qualified name            |
-+-----------+-------------------+---------------------------+
-|           | __self__          | instance to which a       |
-|           |                   | method is bound, or       |
-|           |                   | ``None``                  |
-+-----------+-------------------+---------------------------+
++-----------------+-------------------+---------------------------+
+| Type            | Attribute         | Description               |
++=================+===================+===========================+
+| class           | __doc__           | documentation string      |
++-----------------+-------------------+---------------------------+
+|                 | __name__          | name with which this      |
+|                 |                   | class was defined         |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | __module__        | name of module in which   |
+|                 |                   | this class was defined    |
++-----------------+-------------------+---------------------------+
+|                 | __type_params__   | A tuple containing the    |
+|                 |                   | :ref:`type parameters     |
+|                 |                   | <type-params>` of         |
+|                 |                   | a generic class           |
++-----------------+-------------------+---------------------------+
+| method          | __doc__           | documentation string      |
++-----------------+-------------------+---------------------------+
+|                 | __name__          | name with which this      |
+|                 |                   | method was defined        |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | __func__          | function object           |
+|                 |                   | containing implementation |
+|                 |                   | of method                 |
++-----------------+-------------------+---------------------------+
+|                 | __self__          | instance to which this    |
+|                 |                   | method is bound, or       |
+|                 |                   | ``None``                  |
++-----------------+-------------------+---------------------------+
+|                 | __module__        | name of module in which   |
+|                 |                   | this method was defined   |
++-----------------+-------------------+---------------------------+
+| function        | __doc__           | documentation string      |
++-----------------+-------------------+---------------------------+
+|                 | __name__          | name with which this      |
+|                 |                   | function was defined      |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | __code__          | code object containing    |
+|                 |                   | compiled function         |
+|                 |                   | :term:`bytecode`          |
++-----------------+-------------------+---------------------------+
+|                 | __defaults__      | tuple of any default      |
+|                 |                   | values for positional or  |
+|                 |                   | keyword parameters        |
++-----------------+-------------------+---------------------------+
+|                 | __kwdefaults__    | mapping of any default    |
+|                 |                   | values for keyword-only   |
+|                 |                   | parameters                |
++-----------------+-------------------+---------------------------+
+|                 | __globals__       | global namespace in which |
+|                 |                   | this function was defined |
++-----------------+-------------------+---------------------------+
+|                 | __builtins__      | builtins namespace        |
++-----------------+-------------------+---------------------------+
+|                 | __annotations__   | mapping of parameters     |
+|                 |                   | names to annotations;     |
+|                 |                   | ``"return"`` key is       |
+|                 |                   | reserved for return       |
+|                 |                   | annotations.              |
++-----------------+-------------------+---------------------------+
+|                 | __type_params__   | A tuple containing the    |
+|                 |                   | :ref:`type parameters     |
+|                 |                   | <type-params>` of         |
+|                 |                   | a generic function        |
++-----------------+-------------------+---------------------------+
+|                 | __module__        | name of module in which   |
+|                 |                   | this function was defined |
++-----------------+-------------------+---------------------------+
+| traceback       | tb_frame          | frame object at this      |
+|                 |                   | level                     |
++-----------------+-------------------+---------------------------+
+|                 | tb_lasti          | index of last attempted   |
+|                 |                   | instruction in bytecode   |
++-----------------+-------------------+---------------------------+
+|                 | tb_lineno         | current line number in    |
+|                 |                   | Python source code        |
++-----------------+-------------------+---------------------------+
+|                 | tb_next           | next inner traceback      |
+|                 |                   | object (called by this    |
+|                 |                   | level)                    |
++-----------------+-------------------+---------------------------+
+| frame           | f_back            | next outer frame object   |
+|                 |                   | (this frame's caller)     |
++-----------------+-------------------+---------------------------+
+|                 | f_builtins        | builtins namespace seen   |
+|                 |                   | by this frame             |
++-----------------+-------------------+---------------------------+
+|                 | f_code            | code object being         |
+|                 |                   | executed in this frame    |
++-----------------+-------------------+---------------------------+
+|                 | f_globals         | global namespace seen by  |
+|                 |                   | this frame                |
++-----------------+-------------------+---------------------------+
+|                 | f_lasti           | index of last attempted   |
+|                 |                   | instruction in bytecode   |
++-----------------+-------------------+---------------------------+
+|                 | f_lineno          | current line number in    |
+|                 |                   | Python source code        |
++-----------------+-------------------+---------------------------+
+|                 | f_locals          | local namespace seen by   |
+|                 |                   | this frame                |
++-----------------+-------------------+---------------------------+
+|                 | f_trace           | tracing function for this |
+|                 |                   | frame, or ``None``        |
++-----------------+-------------------+---------------------------+
+| code            | co_argcount       | number of arguments (not  |
+|                 |                   | including keyword only    |
+|                 |                   | arguments, \* or \*\*     |
+|                 |                   | args)                     |
++-----------------+-------------------+---------------------------+
+|                 | co_code           | string of raw compiled    |
+|                 |                   | bytecode                  |
++-----------------+-------------------+---------------------------+
+|                 | co_cellvars       | tuple of names of cell    |
+|                 |                   | variables (referenced by  |
+|                 |                   | containing scopes)        |
++-----------------+-------------------+---------------------------+
+|                 | co_consts         | tuple of constants used   |
+|                 |                   | in the bytecode           |
++-----------------+-------------------+---------------------------+
+|                 | co_filename       | name of file in which     |
+|                 |                   | this code object was      |
+|                 |                   | created                   |
++-----------------+-------------------+---------------------------+
+|                 | co_firstlineno    | number of first line in   |
+|                 |                   | Python source code        |
++-----------------+-------------------+---------------------------+
+|                 | co_flags          | bitmap of ``CO_*`` flags, |
+|                 |                   | read more :ref:`here      |
+|                 |                   | <inspect-module-co-flags>`|
++-----------------+-------------------+---------------------------+
+|                 | co_lnotab         | encoded mapping of line   |
+|                 |                   | numbers to bytecode       |
+|                 |                   | indices                   |
++-----------------+-------------------+---------------------------+
+|                 | co_freevars       | tuple of names of free    |
+|                 |                   | variables (referenced via |
+|                 |                   | a function's closure)     |
++-----------------+-------------------+---------------------------+
+|                 | co_posonlyargcount| number of positional only |
+|                 |                   | arguments                 |
++-----------------+-------------------+---------------------------+
+|                 | co_kwonlyargcount | number of keyword only    |
+|                 |                   | arguments (not including  |
+|                 |                   | \*\* arg)                 |
++-----------------+-------------------+---------------------------+
+|                 | co_name           | name with which this code |
+|                 |                   | object was defined        |
++-----------------+-------------------+---------------------------+
+|                 | co_qualname       | fully qualified name with |
+|                 |                   | which this code object    |
+|                 |                   | was defined               |
++-----------------+-------------------+---------------------------+
+|                 | co_names          | tuple of names other      |
+|                 |                   | than arguments and        |
+|                 |                   | function locals           |
++-----------------+-------------------+---------------------------+
+|                 | co_nlocals        | number of local variables |
++-----------------+-------------------+---------------------------+
+|                 | co_stacksize      | virtual machine stack     |
+|                 |                   | space required            |
++-----------------+-------------------+---------------------------+
+|                 | co_varnames       | tuple of names of         |
+|                 |                   | arguments and local       |
+|                 |                   | variables                 |
++-----------------+-------------------+---------------------------+
+| generator       | __name__          | name                      |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | gi_frame          | frame                     |
++-----------------+-------------------+---------------------------+
+|                 | gi_running        | is the generator running? |
++-----------------+-------------------+---------------------------+
+|                 | gi_code           | code                      |
++-----------------+-------------------+---------------------------+
+|                 | gi_yieldfrom      | object being iterated by  |
+|                 |                   | ``yield from``, or        |
+|                 |                   | ``None``                  |
++-----------------+-------------------+---------------------------+
+| async generator | __name__          | name                      |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | ag_await          | object being awaited on,  |
+|                 |                   | or ``None``               |
++-----------------+-------------------+---------------------------+
+|                 | ag_frame          | frame                     |
++-----------------+-------------------+---------------------------+
+|                 | ag_running        | is the generator running? |
++-----------------+-------------------+---------------------------+
+|                 | ag_code           | code                      |
++-----------------+-------------------+---------------------------+
+| coroutine       | __name__          | name                      |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | cr_await          | object being awaited on,  |
+|                 |                   | or ``None``               |
++-----------------+-------------------+---------------------------+
+|                 | cr_frame          | frame                     |
++-----------------+-------------------+---------------------------+
+|                 | cr_running        | is the coroutine running? |
++-----------------+-------------------+---------------------------+
+|                 | cr_code           | code                      |
++-----------------+-------------------+---------------------------+
+|                 | cr_origin         | where coroutine was       |
+|                 |                   | created, or ``None``. See |
+|                 |                   | |coroutine-origin-link|   |
++-----------------+-------------------+---------------------------+
+| builtin         | __doc__           | documentation string      |
++-----------------+-------------------+---------------------------+
+|                 | __name__          | original name of this     |
+|                 |                   | function or method        |
++-----------------+-------------------+---------------------------+
+|                 | __qualname__      | qualified name            |
++-----------------+-------------------+---------------------------+
+|                 | __self__          | instance to which a       |
+|                 |                   | method is bound, or       |
+|                 |                   | ``None``                  |
++-----------------+-------------------+---------------------------+
 
 .. versionchanged:: 3.5
 
@@ -444,7 +457,7 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
 
    .. versionchanged:: 3.8
       Functions wrapped in :func:`functools.partial` now return ``True`` if the
-      wrapped function is a :term:`asynchronous generator` function.
+      wrapped function is an :term:`asynchronous generator` function.
 
    .. versionchanged:: 3.13
       Functions wrapped in :func:`functools.partialmethod` now return ``True``
@@ -504,10 +517,10 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    are true.
 
    This, for example, is true of ``int.__add__``.  An object passing this test
-   has a :meth:`~object.__get__` method but not a :meth:`~object.__set__`
-   method, but beyond that the set of attributes varies.  A
-   :attr:`~definition.__name__` attribute is usually
-   sensible, and :attr:`!__doc__` often is.
+   has a :meth:`~object.__get__` method, but not a :meth:`~object.__set__`
+   method or a :meth:`~object.__delete__` method.  Beyond that, the set of
+   attributes varies.  A :attr:`~definition.__name__` attribute is usually
+   sensible, and :attr:`~definition.__doc__` often is.
 
    Methods implemented via descriptors that also pass one of the other tests
    return ``False`` from the :func:`ismethoddescriptor` test, simply because the
@@ -515,6 +528,11 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    :attr:`~method.__func__` attribute (etc) when an object passes
    :func:`ismethod`.
 
+   .. versionchanged:: 3.13
+      This function no longer incorrectly reports objects with :meth:`~object.__get__`
+      and :meth:`~object.__delete__`, but not :meth:`~object.__set__`, as being method
+      descriptors (such objects are data descriptors, not method descriptors).
+
 
 .. function:: isdatadescriptor(object)
 
@@ -920,7 +938,7 @@ function.
 
    .. attribute:: Parameter.kind.description
 
-      Describes a enum value of :attr:`Parameter.kind`.
+      Describes an enum value of :attr:`Parameter.kind`.
 
       .. versionadded:: 3.8
 
@@ -1000,7 +1018,8 @@ function.
    .. attribute:: BoundArguments.kwargs
 
       A dict of keyword arguments values.  Dynamically computed from the
-      :attr:`arguments` attribute.
+      :attr:`arguments` attribute.  Arguments that can be passed positionally
+      are included in :attr:`args` instead.
 
    .. attribute:: BoundArguments.signature
 
@@ -1218,7 +1237,7 @@ Classes and functions
    This function handles several details for you:
 
    * If ``eval_str`` is true, values of type ``str`` will
-     be un-stringized using :func:`eval()`.  This is intended
+     be un-stringized using :func:`eval`.  This is intended
      for use with stringized annotations
      (``from __future__ import annotations``).
    * If ``obj`` doesn't have an annotations dict, returns an
@@ -1232,16 +1251,16 @@ Classes and functions
    * Always, always, always returns a freshly created dict.
 
    ``eval_str`` controls whether or not values of type ``str`` are replaced
-   with the result of calling :func:`eval()` on those values:
+   with the result of calling :func:`eval` on those values:
 
-   * If eval_str is true, :func:`eval()` is called on values of type ``str``.
-     (Note that ``get_annotations`` doesn't catch exceptions; if :func:`eval()`
+   * If eval_str is true, :func:`eval` is called on values of type ``str``.
+     (Note that ``get_annotations`` doesn't catch exceptions; if :func:`eval`
      raises an exception, it will unwind the stack past the ``get_annotations``
      call.)
    * If eval_str is false (the default), values of type ``str`` are unchanged.
 
-   ``globals`` and ``locals`` are passed in to :func:`eval()`; see the documentation
-   for :func:`eval()` for more information.  If ``globals`` or ``locals``
+   ``globals`` and ``locals`` are passed in to :func:`eval`; see the documentation
+   for :func:`eval` for more information.  If ``globals`` or ``locals``
    is ``None``, this function may replace that value with a context-specific
    default, contingent on ``type(obj)``:
 
diff --git a/Doc/library/intro.rst b/Doc/library/intro.rst
index ffc8939d21157d..8f76044be488cd 100644
--- a/Doc/library/intro.rst
+++ b/Doc/library/intro.rst
@@ -58,7 +58,7 @@ Notes on availability
   operating system.
 
 * If not separately noted, all functions that claim "Availability: Unix" are
-  supported on macOS and iOS, both of which build on a Unix core.
+  supported on macOS, iOS and Android, all of which build on a Unix core.
 
 * If an availability note contains both a minimum Kernel version and a minimum
   libc version, then both conditions must hold. For example a feature with note
@@ -120,43 +120,57 @@ DOM APIs as well as limited networking capabilities with JavaScript's
 .. _Pyodide: https://pyodide.org/
 .. _PyScript: https://pyscript.net/
 
+.. _mobile-availability:
 .. _iOS-availability:
 
-iOS
----
+Mobile platforms
+----------------
 
-iOS is, in most respects, a POSIX operating system. File I/O, socket handling,
+Android and iOS are, in most respects, POSIX operating systems. File I/O, socket handling,
 and threading all behave as they would on any POSIX operating system. However,
-there are several major differences between iOS and other POSIX systems.
-
-* iOS can only use Python in "embedded" mode. There is no Python REPL, and no
-  ability to execute binaries that are part of the normal Python developer
-  experience, such as :program:`pip`. To add Python code to your iOS app, you must use
-  the :ref:`Python embedding API <embedding>` to add a Python interpreter to an
-  iOS app created with Xcode. See the :ref:`iOS usage guide <using-ios>` for
-  more details.
-
-* An iOS app cannot use any form of subprocessing, background processing, or
-  inter-process communication. If an iOS app attempts to create a subprocess,
-  the process creating the subprocess will either lock up, or crash. An iOS app
-  has no visibility of other applications that are running, nor any ability to
-  communicate with other running applications, outside of the iOS-specific APIs
-  that exist for this purpose.
-
-* iOS apps have limited access to modify system resources (such as the system
+there are several major differences:
+
+* Mobile platforms can only use Python in "embedded" mode. There is no Python
+  REPL, and no ability to use separate executables such as :program:`python` or
+  :program:`pip`. To add Python code to your mobile app, you must use
+  the :ref:`Python embedding API <embedding>`. For more details, see
+  :ref:`using-android` and :ref:`using-ios`.
+
+* Subprocesses:
+
+  * On Android, creating subprocesses is possible but `officially unsupported
+    <https://issuetracker.google.com/issues/128554619#comment4>`__.
+    In particular, Android does not support any part of the System V IPC API,
+    so :mod:`multiprocessing` is not available.
+
+  * An iOS app cannot use any form of subprocessing, multiprocessing, or
+    inter-process communication. If an iOS app attempts to create a subprocess,
+    the process creating the subprocess will either lock up, or crash. An iOS app
+    has no visibility of other applications that are running, nor any ability to
+    communicate with other running applications, outside of the iOS-specific APIs
+    that exist for this purpose.
+
+* Mobile apps have limited access to modify system resources (such as the system
   clock). These resources will often be *readable*, but attempts to modify
   those resources will usually fail.
 
-* iOS apps have a limited concept of console input and output. ``stdout`` and
-  ``stderr`` *exist*, and content written to ``stdout`` and ``stderr`` will be
-  visible in logs when running in Xcode, but this content *won't* be recorded
-  in the system log. If a user who has installed your app provides their app
-  logs as a diagnostic aid, they will not include any detail written to
-  ``stdout`` or ``stderr``.
+* Console input and output:
+
+  * On Android, the native ``stdout`` and ``stderr`` are not connected to
+    anything, so Python installs its own streams which redirect messages to the
+    system log. These can be seen under the tags ``python.stdout`` and
+    ``python.stderr`` respectively.
+
+  * iOS apps have a limited concept of console output. ``stdout`` and
+    ``stderr`` *exist*, and content written to ``stdout`` and ``stderr`` will be
+    visible in logs when running in Xcode, but this content *won't* be recorded
+    in the system log. If a user who has installed your app provides their app
+    logs as a diagnostic aid, they will not include any detail written to
+    ``stdout`` or ``stderr``.
 
-  iOS apps have no concept of  ``stdin`` at all. While iOS apps can have a
-  keyboard, this is a software feature, not something that is attached to
-  ``stdin``.
+  * Mobile apps have no usable ``stdin`` at all. While apps can display an on-screen
+    keyboard, this is a software feature, not something that is attached to
+    ``stdin``.
 
-  As a result, Python library that involve console manipulation (such as
-  :mod:`curses` and :mod:`readline`) are not available on iOS.
+    As a result, Python modules that involve console manipulation (such as
+    :mod:`curses` and :mod:`readline`) are not available on mobile platforms.
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 8eb531aa4ea248..f793d7a7ef9a84 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -1,5 +1,5 @@
-:mod:`io` --- Core tools for working with streams
-=================================================
+:mod:`!io` --- Core tools for working with streams
+==================================================
 
 .. module:: io
    :synopsis: Core tools for working with streams.
@@ -55,7 +55,7 @@ the backing store is natively made of bytes (such as in the case of a file),
 encoding and decoding of data is made transparently as well as optional
 translation of platform-specific newline characters.
 
-The easiest way to create a text stream is with :meth:`open()`, optionally
+The easiest way to create a text stream is with :meth:`open`, optionally
 specifying an encoding::
 
    f = open("myfile.txt", "r", encoding="utf-8")
@@ -77,7 +77,7 @@ objects.  No encoding, decoding, or newline translation is performed.  This
 category of streams can be used for all kinds of non-text data, and also when
 manual control over the handling of text data is desired.
 
-The easiest way to create a binary stream is with :meth:`open()` with ``'b'`` in
+The easiest way to create a binary stream is with :meth:`open` with ``'b'`` in
 the mode string::
 
    f = open("myfile.jpg", "rb")
@@ -950,7 +950,7 @@ Text I/O
    :class:`TextIOBase`.
 
    *encoding* gives the name of the encoding that the stream will be decoded or
-   encoded with.  It defaults to :func:`locale.getencoding()`.
+   encoded with.  It defaults to :func:`locale.getencoding`.
    ``encoding="locale"`` can be used to specify the current locale's encoding
    explicitly. See :ref:`io-text-encoding` for more information.
 
@@ -1182,7 +1182,7 @@ re-enter a buffered object which it is already accessing, a :exc:`RuntimeError`
 is raised.  Note this doesn't prohibit a different thread from entering the
 buffered object.
 
-The above implicitly extends to text files, since the :func:`open()` function
+The above implicitly extends to text files, since the :func:`open` function
 will wrap a buffered object inside a :class:`TextIOWrapper`.  This includes
-standard streams and therefore affects the built-in :func:`print()` function as
+standard streams and therefore affects the built-in :func:`print` function as
 well.
diff --git a/Doc/library/ipaddress.rst b/Doc/library/ipaddress.rst
index a4073a4dac86b9..be5794588b17ca 100644
--- a/Doc/library/ipaddress.rst
+++ b/Doc/library/ipaddress.rst
@@ -1,5 +1,5 @@
-:mod:`ipaddress` --- IPv4/IPv6 manipulation library
-===================================================
+:mod:`!ipaddress` --- IPv4/IPv6 manipulation library
+====================================================
 
 .. module:: ipaddress
    :synopsis: IPv4/IPv6 manipulation library.
@@ -990,7 +990,7 @@ The module also provides the following module level functions:
 .. function:: collapse_addresses(addresses)
 
    Return an iterator of the collapsed :class:`IPv4Network` or
-   :class:`IPv6Network` objects.  *addresses* is an iterator of
+   :class:`IPv6Network` objects.  *addresses* is an :term:`iterable` of
    :class:`IPv4Network` or :class:`IPv6Network` objects.  A :exc:`TypeError` is
    raised if *addresses* contains mixed version objects.
 
@@ -1010,7 +1010,7 @@ The module also provides the following module level functions:
 
    doesn't make sense.  There are some times however, where you may wish to
    have :mod:`ipaddress` sort these anyway.  If you need to do this, you can use
-   this function as the *key* argument to :func:`sorted()`.
+   this function as the *key* argument to :func:`sorted`.
 
    *obj* is either a network or address object.
 
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index fb3f33370e3faa..e487fc4d553580 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -1,5 +1,5 @@
-:mod:`itertools` --- Functions creating iterators for efficient looping
-=======================================================================
+:mod:`!itertools` --- Functions creating iterators for efficient looping
+========================================================================
 
 .. module:: itertools
    :synopsis: Functions creating iterators for efficient looping.
@@ -30,11 +30,6 @@ For instance, SML provides a tabulation tool: ``tabulate(f)`` which produces a
 sequence ``f(0), f(1), ...``.  The same effect can be achieved in Python
 by combining :func:`map` and :func:`count` to form ``map(f, count())``.
 
-These tools and their built-in counterparts also work well with the high-speed
-functions in the :mod:`operator` module.  For example, the multiplication
-operator can be mapped across two vectors to form an efficient dot-product:
-``sum(starmap(operator.mul, zip(vec1, vec2, strict=True)))``.
-
 
 **Infinite iterators:**
 
@@ -56,13 +51,13 @@ Iterator                        Arguments                       Results
 :func:`chain`                   p, q, ...                       p0, p1, ... plast, q0, q1, ...                      ``chain('ABC', 'DEF') → A B C D E F``
 :func:`chain.from_iterable`     iterable                        p0, p1, ... plast, q0, q1, ...                      ``chain.from_iterable(['ABC', 'DEF']) → A B C D E F``
 :func:`compress`                data, selectors                 (d[0] if s[0]), (d[1] if s[1]), ...                 ``compress('ABCDEF', [1,0,1,0,1,1]) → A C E F``
-:func:`dropwhile`               predicate, seq                  seq[n], seq[n+1], starting when predicate fails     ``dropwhile(lambda x: x<5, [1,4,6,4,1]) → 6 4 1``
-:func:`filterfalse`             predicate, seq                  elements of seq where predicate(elem) fails         ``filterfalse(lambda x: x%2, range(10)) → 0 2 4 6 8``
-:func:`groupby`                 iterable[, key]                 sub-iterators grouped by value of key(v)
+:func:`dropwhile`               predicate, seq                  seq[n], seq[n+1], starting when predicate fails     ``dropwhile(lambda x: x<5, [1,4,6,3,8]) → 6 3 8``
+:func:`filterfalse`             predicate, seq                  elements of seq where predicate(elem) fails         ``filterfalse(lambda x: x<5, [1,4,6,3,8]) → 6 8``
+:func:`groupby`                 iterable[, key]                 sub-iterators grouped by value of key(v)            ``groupby(['A','B','DEF'], len) → (1, A B) (3, DEF)``
 :func:`islice`                  seq, [start,] stop [, step]     elements from seq[start:stop:step]                  ``islice('ABCDEFG', 2, None) → C D E F G``
 :func:`pairwise`                iterable                        (p[0], p[1]), (p[1], p[2])                          ``pairwise('ABCDEFG') → AB BC CD DE EF FG``
 :func:`starmap`                 func, seq                       func(\*seq[0]), func(\*seq[1]), ...                 ``starmap(pow, [(2,5), (3,2), (10,3)]) → 32 9 1000``
-:func:`takewhile`               predicate, seq                  seq[0], seq[1], until predicate fails               ``takewhile(lambda x: x<5, [1,4,6,4,1]) → 1 4``
+:func:`takewhile`               predicate, seq                  seq[0], seq[1], until predicate fails               ``takewhile(lambda x: x<5, [1,4,6,3,8]) → 1 4``
 :func:`tee`                     it, n                           it1, it2, ... itn  splits one iterator into n
 :func:`zip_longest`             p, q, ...                       (p[0], q[0]), (p[1], q[1]), ...                     ``zip_longest('ABCD', 'xy', fillvalue='-') → Ax By C- D-``
 ============================    ============================    =================================================   =============================================================
@@ -93,63 +88,62 @@ Examples                                         Results
 Itertool Functions
 ------------------
 
-The following module functions all construct and return iterators. Some provide
+The following functions all construct and return iterators. Some provide
 streams of infinite length, so they should only be accessed by functions or
 loops that truncate the stream.
 
-.. function:: accumulate(iterable[, func, *, initial=None])
 
-    Make an iterator that returns accumulated sums, or accumulated
-    results of other binary functions (specified via the optional
-    *func* argument).
+.. function:: accumulate(iterable[, function, *, initial=None])
+
+    Make an iterator that returns accumulated sums or accumulated
+    results from other binary functions.
 
-    If *func* is supplied, it should be a function
-    of two arguments. Elements of the input *iterable* may be any type
-    that can be accepted as arguments to *func*. (For example, with
-    the default operation of addition, elements may be any addable
-    type including :class:`~decimal.Decimal` or
-    :class:`~fractions.Fraction`.)
+    The *function* defaults to addition.  The *function* should accept
+    two arguments, an accumulated total and a value from the *iterable*.
 
-    Usually, the number of elements output matches the input iterable.
-    However, if the keyword argument *initial* is provided, the
-    accumulation leads off with the *initial* value so that the output
-    has one more element than the input iterable.
+    If an *initial* value is provided, the accumulation will start with
+    that value and the output will have one more element than the input
+    iterable.
 
     Roughly equivalent to::
 
-        def accumulate(iterable, func=operator.add, *, initial=None):
+        def accumulate(iterable, function=operator.add, *, initial=None):
             'Return running totals'
             # accumulate([1,2,3,4,5]) → 1 3 6 10 15
             # accumulate([1,2,3,4,5], initial=100) → 100 101 103 106 110 115
             # accumulate([1,2,3,4,5], operator.mul) → 1 2 6 24 120
-            it = iter(iterable)
+
+            iterator = iter(iterable)
             total = initial
             if initial is None:
                 try:
-                    total = next(it)
+                    total = next(iterator)
                 except StopIteration:
                     return
+
             yield total
-            for element in it:
-                total = func(total, element)
+            for element in iterator:
+                total = function(total, element)
                 yield total
 
-    There are a number of uses for the *func* argument.  It can be set to
-    :func:`min` for a running minimum, :func:`max` for a running maximum, or
-    :func:`operator.mul` for a running product.  Amortization tables can be
-    built by accumulating interest and applying payments:
+    To compute a running minimum, set *function* to :func:`min`.
+    For a running maximum, set *function* to :func:`max`.
+    Or for a running product, set *function* to :func:`operator.mul`.
+    To build an `amortization table
+    <https://www.ramseysolutions.com/real-estate/amortization-schedule>`_,
+    accumulate the interest and apply payments:
 
     .. doctest::
 
       >>> data = [3, 4, 6, 2, 1, 9, 0, 7, 5, 8]
-      >>> list(accumulate(data, operator.mul))     # running product
-      [3, 12, 72, 144, 144, 1296, 0, 0, 0, 0]
       >>> list(accumulate(data, max))              # running maximum
       [3, 4, 6, 6, 6, 9, 9, 9, 9, 9]
+      >>> list(accumulate(data, operator.mul))     # running product
+      [3, 12, 72, 144, 144, 1296, 0, 0, 0, 0]
 
       # Amortize a 5% loan of 1000 with 10 annual payments of 90
-      >>> account_update = lambda bal, pmt: round(bal * 1.05) + pmt
-      >>> list(accumulate(repeat(-90, 10), account_update, initial=1_000))
+      >>> update = lambda balance, payment: round(balance * 1.05) - payment
+      >>> list(accumulate(repeat(90, 10), update, initial=1_000))
       [1000, 960, 918, 874, 828, 779, 728, 674, 618, 559, 497]
 
     See :func:`functools.reduce` for a similar function that returns only the
@@ -158,7 +152,7 @@ loops that truncate the stream.
     .. versionadded:: 3.2
 
     .. versionchanged:: 3.3
-       Added the optional *func* parameter.
+       Added the optional *function* parameter.
 
     .. versionchanged:: 3.8
        Added the optional *initial* parameter.
@@ -184,21 +178,14 @@ loops that truncate the stream.
       >>> unflattened
       [('roses', 'red'), ('violets', 'blue'), ('sugar', 'sweet')]
 
-      >>> for batch in batched('ABCDEFG', 3):
-      ...     print(batch)
-      ...
-      ('A', 'B', 'C')
-      ('D', 'E', 'F')
-      ('G',)
-
    Roughly equivalent to::
 
       def batched(iterable, n, *, strict=False):
           # batched('ABCDEFG', 3) → ABC DEF G
           if n < 1:
               raise ValueError('n must be at least one')
-          it = iter(iterable)
-          while batch := tuple(islice(it, n)):
+          iterator = iter(iterable)
+          while batch := tuple(islice(iterator, n)):
               if strict and len(batch) != n:
                   raise ValueError('batched(): incomplete batch')
               yield batch
@@ -211,16 +198,15 @@ loops that truncate the stream.
 
 .. function:: chain(*iterables)
 
-   Make an iterator that returns elements from the first iterable until it is
-   exhausted, then proceeds to the next iterable, until all of the iterables are
-   exhausted.  Used for treating consecutive sequences as a single sequence.
-   Roughly equivalent to::
+   Make an iterator that returns elements from the first iterable until
+   it is exhausted, then proceeds to the next iterable, until all of the
+   iterables are exhausted.  This combines multiple data sources into a
+   single iterator.  Roughly equivalent to::
 
       def chain(*iterables):
           # chain('ABC', 'DEF') → A B C D E F
-          for it in iterables:
-              for element in it:
-                  yield element
+          for iterable in iterables:
+              yield from iterable
 
 
 .. classmethod:: chain.from_iterable(iterable)
@@ -230,33 +216,39 @@ loops that truncate the stream.
 
       def from_iterable(iterables):
           # chain.from_iterable(['ABC', 'DEF']) → A B C D E F
-          for it in iterables:
-              for element in it:
-                  yield element
+          for iterable in iterables:
+              yield from iterable
 
 
 .. function:: combinations(iterable, r)
 
    Return *r* length subsequences of elements from the input *iterable*.
 
-   The combination tuples are emitted in lexicographic ordering according to
-   the order of the input *iterable*. So, if the input *iterable* is sorted,
+   The output is a subsequence of :func:`product` keeping only entries that
+   are subsequences of the *iterable*.  The length of the output is given
+   by :func:`math.comb` which computes ``n! / r! / (n - r)!`` when ``0 ≤ r
+   ≤ n`` or zero when ``r > n``.
+
+   The combination tuples are emitted in lexicographic order according to
+   the order of the input *iterable*. If the input *iterable* is sorted,
    the output tuples will be produced in sorted order.
 
    Elements are treated as unique based on their position, not on their
-   value.  So if the input elements are unique, there will be no repeated
-   values in each combination.
+   value.  If the input elements are unique, there will be no repeated
+   values within each combination.
 
    Roughly equivalent to::
 
         def combinations(iterable, r):
             # combinations('ABCD', 2) → AB AC AD BC BD CD
             # combinations(range(4), 3) → 012 013 023 123
+
             pool = tuple(iterable)
             n = len(pool)
             if r > n:
                 return
             indices = list(range(r))
+
             yield tuple(pool[i] for i in indices)
             while True:
                 for i in reversed(range(r)):
@@ -269,42 +261,36 @@ loops that truncate the stream.
                     indices[j] = indices[j-1] + 1
                 yield tuple(pool[i] for i in indices)
 
-   The code for :func:`combinations` can be also expressed as a subsequence
-   of :func:`permutations` after filtering entries where the elements are not
-   in sorted order (according to their position in the input pool)::
-
-        def combinations(iterable, r):
-            pool = tuple(iterable)
-            n = len(pool)
-            for indices in permutations(range(n), r):
-                if sorted(indices) == list(indices):
-                    yield tuple(pool[i] for i in indices)
-
-   The number of items returned is ``n! / r! / (n-r)!`` when ``0 <= r <= n``
-   or zero when ``r > n``.
 
 .. function:: combinations_with_replacement(iterable, r)
 
    Return *r* length subsequences of elements from the input *iterable*
    allowing individual elements to be repeated more than once.
 
-   The combination tuples are emitted in lexicographic ordering according to
-   the order of the input *iterable*. So, if the input *iterable* is sorted,
+   The output is a subsequence of :func:`product` that keeps only entries
+   that are subsequences (with possible repeated elements) of the
+   *iterable*.  The number of subsequence returned is ``(n + r - 1)! / r! /
+   (n - 1)!`` when ``n > 0``.
+
+   The combination tuples are emitted in lexicographic order according to
+   the order of the input *iterable*. if the input *iterable* is sorted,
    the output tuples will be produced in sorted order.
 
    Elements are treated as unique based on their position, not on their
-   value.  So if the input elements are unique, the generated combinations
+   value.  If the input elements are unique, the generated combinations
    will also be unique.
 
    Roughly equivalent to::
 
         def combinations_with_replacement(iterable, r):
             # combinations_with_replacement('ABC', 2) → AA AB AC BB BC CC
+
             pool = tuple(iterable)
             n = len(pool)
             if not n and r:
                 return
             indices = [0] * r
+
             yield tuple(pool[i] for i in indices)
             while True:
                 for i in reversed(range(r)):
@@ -315,41 +301,29 @@ loops that truncate the stream.
                 indices[i:] = [indices[i] + 1] * (r - i)
                 yield tuple(pool[i] for i in indices)
 
-   The code for :func:`combinations_with_replacement` can be also expressed as
-   a subsequence of :func:`product` after filtering entries where the elements
-   are not in sorted order (according to their position in the input pool)::
-
-        def combinations_with_replacement(iterable, r):
-            pool = tuple(iterable)
-            n = len(pool)
-            for indices in product(range(n), repeat=r):
-                if sorted(indices) == list(indices):
-                    yield tuple(pool[i] for i in indices)
-
-   The number of items returned is ``(n+r-1)! / r! / (n-1)!`` when ``n > 0``.
-
    .. versionadded:: 3.1
 
 
 .. function:: compress(data, selectors)
 
-   Make an iterator that filters elements from *data* returning only those that
-   have a corresponding element in *selectors* that evaluates to ``True``.
-   Stops when either the *data* or *selectors* iterables has been exhausted.
-   Roughly equivalent to::
+   Make an iterator that returns elements from *data* where the
+   corresponding element in *selectors* is true.  Stops when either the
+   *data* or *selectors* iterables have been exhausted.  Roughly
+   equivalent to::
 
        def compress(data, selectors):
            # compress('ABCDEF', [1,0,1,0,1,1]) → A C E F
-           return (d for d, s in zip(data, selectors) if s)
+           return (datum for datum, selector in zip(data, selectors) if selector)
 
    .. versionadded:: 3.1
 
 
 .. function:: count(start=0, step=1)
 
-   Make an iterator that returns evenly spaced values starting with number *start*. Often
-   used as an argument to :func:`map` to generate consecutive data points.
-   Also, used with :func:`zip` to add sequence numbers.  Roughly equivalent to::
+   Make an iterator that returns evenly spaced values beginning with
+   *start*. Can be used with :func:`map` to generate consecutive data
+   points or with :func:`zip` to add sequence numbers.  Roughly
+   equivalent to::
 
       def count(start=0, step=1):
           # count(10) → 10 11 12 13 14 ...
@@ -359,60 +333,71 @@ loops that truncate the stream.
               yield n
               n += step
 
-   When counting with floating point numbers, better accuracy can sometimes be
+   When counting with floating-point numbers, better accuracy can sometimes be
    achieved by substituting multiplicative code such as: ``(start + step * i
    for i in count())``.
 
    .. versionchanged:: 3.1
       Added *step* argument and allowed non-integer arguments.
 
+
 .. function:: cycle(iterable)
 
-   Make an iterator returning elements from the iterable and saving a copy of each.
-   When the iterable is exhausted, return elements from the saved copy.  Repeats
-   indefinitely.  Roughly equivalent to::
+   Make an iterator returning elements from the *iterable* and saving a
+   copy of each.  When the iterable is exhausted, return elements from
+   the saved copy.  Repeats indefinitely.  Roughly equivalent to::
 
       def cycle(iterable):
           # cycle('ABCD') → A B C D A B C D A B C D ...
+
           saved = []
           for element in iterable:
               yield element
               saved.append(element)
+
           while saved:
               for element in saved:
-                    yield element
+                  yield element
 
-   Note, this member of the toolkit may require significant auxiliary storage
-   (depending on the length of the iterable).
+   This itertool may require significant auxiliary storage (depending on
+   the length of the iterable).
 
 
 .. function:: dropwhile(predicate, iterable)
 
-   Make an iterator that drops elements from the iterable as long as the predicate
-   is true; afterwards, returns every element.  Note, the iterator does not produce
-   *any* output until the predicate first becomes false, so it may have a lengthy
-   start-up time.  Roughly equivalent to::
+   Make an iterator that drops elements from the *iterable* while the
+   *predicate* is true and afterwards returns every element.  Roughly
+   equivalent to::
 
       def dropwhile(predicate, iterable):
-          # dropwhile(lambda x: x<5, [1,4,6,4,1]) → 6 4 1
-          iterable = iter(iterable)
-          for x in iterable:
+          # dropwhile(lambda x: x<5, [1,4,6,3,8]) → 6 3 8
+
+          iterator = iter(iterable)
+          for x in iterator:
               if not predicate(x):
                   yield x
                   break
-          for x in iterable:
+
+          for x in iterator:
               yield x
 
+   Note this does not produce *any* output until the predicate first
+   becomes false, so this itertool may have a lengthy start-up time.
+
+
 .. function:: filterfalse(predicate, iterable)
 
-   Make an iterator that filters elements from iterable returning only those for
-   which the predicate is false. If *predicate* is ``None``, return the items
-   that are false. Roughly equivalent to::
+   Make an iterator that filters elements from the *iterable* returning
+   only those for which the *predicate* returns a false value.  If
+   *predicate* is ``None``, returns the items that are false.  Roughly
+   equivalent to::
 
       def filterfalse(predicate, iterable):
-          # filterfalse(lambda x: x%2, range(10)) → 0 2 4 6 8
+          # filterfalse(lambda x: x<5, [1,4,6,3,8]) → 6 8
+
           if predicate is None:
               predicate = bool
+
           for x in iterable:
               if not predicate(x):
                   yield x
@@ -446,55 +431,55 @@ loops that truncate the stream.
 
    :func:`groupby` is roughly equivalent to::
 
-      class groupby:
+      def groupby(iterable, key=None):
           # [k for k, g in groupby('AAAABBBCCDAABBB')] → A B C D A B
           # [list(g) for k, g in groupby('AAAABBBCCD')] → AAAA BBB CC D
 
-          def __init__(self, iterable, key=None):
-              if key is None:
-                  key = lambda x: x
-              self.keyfunc = key
-              self.it = iter(iterable)
-              self.tgtkey = self.currkey = self.currvalue = object()
-
-          def __iter__(self):
-              return self
-
-          def __next__(self):
-              self.id = object()
-              while self.currkey == self.tgtkey:
-                  self.currvalue = next(self.it)    # Exit on StopIteration
-                  self.currkey = self.keyfunc(self.currvalue)
-              self.tgtkey = self.currkey
-              return (self.currkey, self._grouper(self.tgtkey, self.id))
-
-          def _grouper(self, tgtkey, id):
-              while self.id is id and self.currkey == tgtkey:
-                  yield self.currvalue
-                  try:
-                      self.currvalue = next(self.it)
-                  except StopIteration:
+          keyfunc = (lambda x: x) if key is None else key
+          iterator = iter(iterable)
+          exhausted = False
+
+          def _grouper(target_key):
+              nonlocal curr_value, curr_key, exhausted
+              yield curr_value
+              for curr_value in iterator:
+                  curr_key = keyfunc(curr_value)
+                  if curr_key != target_key:
                       return
-                  self.currkey = self.keyfunc(self.currvalue)
+                  yield curr_value
+              exhausted = True
+
+          try:
+              curr_value = next(iterator)
+          except StopIteration:
+              return
+          curr_key = keyfunc(curr_value)
+
+          while not exhausted:
+              target_key = curr_key
+              curr_group = _grouper(target_key)
+              yield curr_key, curr_group
+              if curr_key == target_key:
+                  for _ in curr_group:
+                      pass
 
 
 .. function:: islice(iterable, stop)
               islice(iterable, start, stop[, step])
 
-   Make an iterator that returns selected elements from the iterable. If *start* is
-   non-zero, then elements from the iterable are skipped until start is reached.
-   Afterward, elements are returned consecutively unless *step* is set higher than
-   one which results in items being skipped.  If *stop* is ``None``, then iteration
-   continues until the iterator is exhausted, if at all; otherwise, it stops at the
-   specified position.
+   Make an iterator that returns selected elements from the iterable.
+   Works like sequence slicing but does not support negative values for
+   *start*, *stop*, or *step*.
+
+   If *start* is zero or ``None``, iteration starts at zero.  Otherwise,
+   elements from the iterable are skipped until *start* is reached.
 
-   If *start* is ``None``, then iteration starts at zero. If *step* is ``None``,
-   then the step defaults to one.
+   If *stop* is ``None``, iteration continues until the input is
+   exhausted, if at all.  Otherwise, it stops at the specified position.
 
-   Unlike regular slicing, :func:`islice` does not support negative values for
-   *start*, *stop*, or *step*.  Can be used to extract related fields from
-   data where the internal structure has been flattened (for example, a
-   multi-line report may list a name field on every third line).
+   If *step* is ``None``, the step defaults to one.  Elements are returned
+   consecutively unless *step* is set higher than one which results in
+   items being skipped.
 
    Roughly equivalent to::
 
@@ -503,19 +488,25 @@ loops that truncate the stream.
           # islice('ABCDEFG', 2, 4) → C D
           # islice('ABCDEFG', 2, None) → C D E F G
           # islice('ABCDEFG', 0, None, 2) → A C E G
+
           s = slice(*args)
           start = 0 if s.start is None else s.start
           stop = s.stop
           step = 1 if s.step is None else s.step
           if start < 0 or (stop is not None and stop < 0) or step <= 0:
               raise ValueError
-          indices = count() if stop is None else range(max(stop, start))
+
+          indices = count() if stop is None else range(max(start, stop))
           next_i = start
           for i, element in zip(indices, iterable):
               if i == next_i:
                   yield element
                   next_i += step
 
+   If the input is an iterator, then fully consuming the *islice*
+   advances the input iterator by ``max(start, stop)`` steps regardless
+   of the *step* value.
+
 
 .. function:: pairwise(iterable)
 
@@ -529,8 +520,10 @@ loops that truncate the stream.
 
         def pairwise(iterable):
             # pairwise('ABCDEFG') → AB BC CD DE EF FG
+
             iterator = iter(iterable)
             a = next(iterator, None)
+
             for b in iterator:
                 yield a, b
                 a = b
@@ -540,18 +533,24 @@ loops that truncate the stream.
 
 .. function:: permutations(iterable, r=None)
 
-   Return successive *r* length permutations of elements in the *iterable*.
+   Return successive *r* length `permutations of elements
+   <https://www.britannica.com/science/permutation>`_ from the *iterable*.
 
    If *r* is not specified or is ``None``, then *r* defaults to the length
    of the *iterable* and all possible full-length permutations
    are generated.
 
+   The output is a subsequence of :func:`product` where entries with
+   repeated elements have been filtered out.  The length of the output is
+   given by :func:`math.perm` which computes ``n! / (n - r)!`` when
+   ``0 ≤ r ≤ n`` or zero when ``r > n``.
+
    The permutation tuples are emitted in lexicographic order according to
-   the order of the input *iterable*. So, if the input *iterable* is sorted,
+   the order of the input *iterable*.  If the input *iterable* is sorted,
    the output tuples will be produced in sorted order.
 
    Elements are treated as unique based on their position, not on their
-   value.  So if the input elements are unique, there will be no repeated
+   value.  If the input elements are unique, there will be no repeated
    values within a permutation.
 
    Roughly equivalent to::
@@ -559,14 +558,17 @@ loops that truncate the stream.
         def permutations(iterable, r=None):
             # permutations('ABCD', 2) → AB AC AD BA BC BD CA CB CD DA DB DC
             # permutations(range(3)) → 012 021 102 120 201 210
+
             pool = tuple(iterable)
             n = len(pool)
             r = n if r is None else r
             if r > n:
                 return
+
             indices = list(range(n))
             cycles = list(range(n, n-r, -1))
             yield tuple(pool[i] for i in indices[:r])
+
             while n:
                 for i in reversed(range(r)):
                     cycles[i] -= 1
@@ -581,24 +583,11 @@ loops that truncate the stream.
                 else:
                     return
 
-   The code for :func:`permutations` can be also expressed as a subsequence of
-   :func:`product`, filtered to exclude entries with repeated elements (those
-   from the same position in the input pool)::
-
-        def permutations(iterable, r=None):
-            pool = tuple(iterable)
-            n = len(pool)
-            r = n if r is None else r
-            for indices in product(range(n), repeat=r):
-                if len(set(indices)) == r:
-                    yield tuple(pool[i] for i in indices)
-
-   The number of items returned is ``n! / (n-r)!`` when ``0 <= r <= n``
-   or zero when ``r > n``.
 
 .. function:: product(*iterables, repeat=1)
 
-   Cartesian product of input iterables.
+   `Cartesian product <https://en.wikipedia.org/wiki/Cartesian_product>`_
+   of the input iterables.
 
    Roughly equivalent to nested for-loops in a generator expression. For example,
    ``product(A, B)`` returns the same as ``((x,y) for x in A for y in B)``.
@@ -615,13 +604,18 @@ loops that truncate the stream.
    This function is roughly equivalent to the following code, except that the
    actual implementation does not build up intermediate results in memory::
 
-       def product(*args, repeat=1):
+       def product(*iterables, repeat=1):
            # product('ABCD', 'xy') → Ax Ay Bx By Cx Cy Dx Dy
            # product(range(2), repeat=3) → 000 001 010 011 100 101 110 111
-           pools = [tuple(pool) for pool in args] * repeat
+
+           if repeat < 0:
+               raise ValueError('repeat argument cannot be negative')
+           pools = [tuple(pool) for pool in iterables] * repeat
+
            result = [[]]
            for pool in pools:
                result = [x+[y] for x in result for y in pool]
+
            for prod in result:
                yield tuple(prod)
 
@@ -629,6 +623,7 @@ loops that truncate the stream.
    keeping pools of values in memory to generate the products.  Accordingly,
    it is only useful with finite inputs.
 
+
 .. function:: repeat(object[, times])
 
    Make an iterator that returns *object* over and over again. Runs indefinitely
@@ -653,12 +648,12 @@ loops that truncate the stream.
       >>> list(map(pow, range(10), repeat(2)))
       [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
 
+
 .. function:: starmap(function, iterable)
 
-   Make an iterator that computes the function using arguments obtained from
-   the iterable.  Used instead of :func:`map` when argument parameters are already
-   grouped in tuples from a single iterable (when the data has been
-   "pre-zipped").
+   Make an iterator that computes the *function* using arguments obtained
+   from the *iterable*.  Used instead of :func:`map` when argument
+   parameters have already been "pre-zipped" into tuples.
 
    The difference between :func:`map` and :func:`starmap` parallels the
    distinction between ``function(a,b)`` and ``function(*c)``. Roughly
@@ -672,22 +667,21 @@ loops that truncate the stream.
 
 .. function:: takewhile(predicate, iterable)
 
-   Make an iterator that returns elements from the iterable as long as the
-   predicate is true.  Roughly equivalent to::
+   Make an iterator that returns elements from the *iterable* as long as
+   the *predicate* is true.  Roughly equivalent to::
 
       def takewhile(predicate, iterable):
-          # takewhile(lambda x: x<5, [1,4,6,4,1]) → 1 4
+          # takewhile(lambda x: x<5, [1,4,6,3,8]) → 1 4
           for x in iterable:
-              if predicate(x):
-                  yield x
-              else:
+              if not predicate(x):
                   break
+              yield x
 
    Note, the element that first fails the predicate condition is
    consumed from the input iterator and there is no way to access it.
    This could be an issue if an application wants to further consume the
-   input iterator after takewhile has been run to exhaustion.  To work
-   around this problem, consider using `more-iterools before_and_after()
+   input iterator after *takewhile* has been run to exhaustion.  To work
+   around this problem, consider using `more-itertools before_and_after()
    <https://more-itertools.readthedocs.io/en/stable/api.html#more_itertools.before_and_after>`_
    instead.
 
@@ -696,28 +690,66 @@ loops that truncate the stream.
 
    Return *n* independent iterators from a single iterable.
 
-   The following Python code helps explain what *tee* does (although the actual
-   implementation is more complex and uses only a single underlying
-   :abbr:`FIFO (first-in, first-out)` queue)::
+   Roughly equivalent to::
 
         def tee(iterable, n=2):
-            it = iter(iterable)
-            deques = [collections.deque() for i in range(n)]
-            def gen(mydeque):
-                while True:
-                    if not mydeque:             # when the local deque is empty
-                        try:
-                            newval = next(it)   # fetch a new value and
-                        except StopIteration:
-                            return
-                        for d in deques:        # load it to all the deques
-                            d.append(newval)
-                    yield mydeque.popleft()
-            return tuple(gen(d) for d in deques)
-
-   Once a :func:`tee` has been created, the original *iterable* should not be
-   used anywhere else; otherwise, the *iterable* could get advanced without
-   the tee objects being informed.
+            if n < 0:
+                raise ValueError
+            if n == 0:
+                return ()
+            iterator = _tee(iterable)
+            result = [iterator]
+            for _ in range(n - 1):
+                result.append(_tee(iterator))
+            return tuple(result)
+
+        class _tee:
+
+            def __init__(self, iterable):
+                it = iter(iterable)
+                if isinstance(it, _tee):
+                    self.iterator = it.iterator
+                    self.link = it.link
+                else:
+                    self.iterator = it
+                    self.link = [None, None]
+
+            def __iter__(self):
+                return self
+
+            def __next__(self):
+                link = self.link
+                if link[1] is None:
+                    link[0] = next(self.iterator)
+                    link[1] = [None, None]
+                value, self.link = link
+                return value
+
+   When the input *iterable* is already a tee iterator object, all
+   members of the return tuple are constructed as if they had been
+   produced by the upstream :func:`tee` call.  This "flattening step"
+   allows nested :func:`tee` calls to share the same underlying data
+   chain and to have a single update step rather than a chain of calls.
+
+   The flattening property makes tee iterators efficiently peekable:
+
+   .. testcode::
+
+      def lookahead(tee_iterator):
+           "Return the next value without moving the input forward"
+           [forked_iterator] = tee(tee_iterator, 1)
+           return next(forked_iterator)
+
+   .. doctest::
+
+      >>> iterator = iter('abcdef')
+      >>> [iterator] = tee(iterator, 1)   # Make the input peekable
+      >>> next(iterator)                  # Move the iterator forward
+      'a'
+      >>> lookahead(iterator)             # Check next value
+      'b'
+      >>> next(iterator)                  # Continue moving forward
+      'b'
 
    ``tee`` iterators are not threadsafe. A :exc:`RuntimeError` may be
    raised when simultaneously using iterators returned by the same :func:`tee`
@@ -731,21 +763,29 @@ loops that truncate the stream.
 
 .. function:: zip_longest(*iterables, fillvalue=None)
 
-   Make an iterator that aggregates elements from each of the iterables. If the
-   iterables are of uneven length, missing values are filled-in with *fillvalue*.
-   Iteration continues until the longest iterable is exhausted.  Roughly equivalent to::
+   Make an iterator that aggregates elements from each of the
+   *iterables*.
+
+   If the iterables are of uneven length, missing values are filled-in
+   with *fillvalue*.  If not specified, *fillvalue* defaults to ``None``.
 
-      def zip_longest(*args, fillvalue=None):
+   Iteration continues until the longest iterable is exhausted.
+
+   Roughly equivalent to::
+
+      def zip_longest(*iterables, fillvalue=None):
           # zip_longest('ABCD', 'xy', fillvalue='-') → Ax By C- D-
-          iterators = [iter(it) for it in args]
+
+          iterators = list(map(iter, iterables))
           num_active = len(iterators)
           if not num_active:
               return
+
           while True:
               values = []
-              for i, it in enumerate(iterators):
+              for i, iterator in enumerate(iterators):
                   try:
-                      value = next(it)
+                      value = next(iterator)
                   except StopIteration:
                       num_active -= 1
                       if not num_active:
@@ -757,8 +797,7 @@ loops that truncate the stream.
 
    If one of the iterables is potentially infinite, then the :func:`zip_longest`
    function should be wrapped with something that limits the number of calls
-   (for example :func:`islice` or :func:`takewhile`).  If not specified,
-   *fillvalue* defaults to ``None``.
+   (for example :func:`islice` or :func:`takewhile`).
 
 
 .. _itertools-recipes:
@@ -799,11 +838,11 @@ and :term:`generators <generator>` which incur interpreter overhead.
 
 .. testcode::
 
-   import collections
-   import functools
-   import math
-   import operator
-   import random
+   from collections import deque
+   from contextlib import suppress
+   from functools import reduce
+   from math import sumprod, isqrt
+   from operator import itemgetter, getitem, mul, neg
 
    def take(n, iterable):
        "Return first n items of the iterable as a list."
@@ -818,11 +857,11 @@ and :term:`generators <generator>` which incur interpreter overhead.
        "Return function(0), function(1), ..."
        return map(function, count(start))
 
-   def repeatfunc(func, times=None, *args):
-       "Repeat calls to func with specified arguments."
+   def repeatfunc(function, times=None, *args):
+       "Repeat calls to a function with specified arguments."
        if times is None:
-           return starmap(func, repeat(args))
-       return starmap(func, repeat(args, times))
+           return starmap(function, repeat(args))
+       return starmap(function, repeat(args, times))
 
    def flatten(list_of_lists):
        "Flatten one level of nesting."
@@ -832,16 +871,21 @@ and :term:`generators <generator>` which incur interpreter overhead.
        "Returns the sequence elements n times."
        return chain.from_iterable(repeat(tuple(iterable), n))
 
+   def loops(n):
+       "Loop n times. Like range(n) but without creating integers."
+       # for _ in loops(100): ...
+       return repeat(None, n)
+
    def tail(n, iterable):
        "Return an iterator over the last n items."
        # tail(3, 'ABCDEFG') → E F G
-       return iter(collections.deque(iterable, maxlen=n))
+       return iter(deque(iterable, maxlen=n))
 
    def consume(iterator, n=None):
        "Advance the iterator n-steps ahead. If n is None, consume entirely."
        # Use functions that consume iterators at C speed.
        if n is None:
-           collections.deque(iterator, maxlen=0)
+           deque(iterator, maxlen=0)
        else:
            next(islice(iterator, n, n), None)
 
@@ -865,15 +909,15 @@ and :term:`generators <generator>` which incur interpreter overhead.
        return len(take(2, groupby(iterable, key))) <= 1
 
    def unique_justseen(iterable, key=None):
-       "List unique elements, preserving order. Remember only the element just seen."
+       "Yield unique elements, preserving order. Remember only the element just seen."
        # unique_justseen('AAAABBBCCDAABBB') → A B C D A B
        # unique_justseen('ABBcCAD', str.casefold) → A B c A D
        if key is None:
-           return map(operator.itemgetter(0), groupby(iterable))
-       return map(next, map(operator.itemgetter(1), groupby(iterable, key)))
+           return map(itemgetter(0), groupby(iterable))
+       return map(next, map(itemgetter(1), groupby(iterable, key)))
 
    def unique_everseen(iterable, key=None):
-       "List unique elements, preserving order. Remember all elements ever seen."
+       "Yield unique elements, preserving order. Remember all elements ever seen."
        # unique_everseen('AAAABBBCCDAABBB') → A B C D
        # unique_everseen('ABBcCAD', str.casefold) → A B c D
        seen = set()
@@ -888,11 +932,17 @@ and :term:`generators <generator>` which incur interpreter overhead.
                    seen.add(k)
                    yield element
 
+   def unique(iterable, key=None, reverse=False):
+      "Yield unique elements in sorted order. Supports unhashable inputs."
+      # unique([[1, 2], [3, 4], [1, 2]]) → [1, 2] [3, 4]
+      sequenced = sorted(iterable, key=key, reverse=reverse)
+      return unique_justseen(sequenced, key=key)
+
    def sliding_window(iterable, n):
        "Collect data into overlapping fixed-length chunks or blocks."
        # sliding_window('ABCDEFG', 4) → ABCD BCDE CDEF DEFG
        iterator = iter(iterable)
-       window = collections.deque(islice(iterator, n - 1), maxlen=n)
+       window = deque(islice(iterator, n - 1), maxlen=n)
        for x in iterator:
            window.append(x)
            yield tuple(window)
@@ -922,52 +972,37 @@ and :term:`generators <generator>` which incur interpreter overhead.
            iterators = cycle(islice(iterators, num_active))
            yield from map(next, iterators)
 
-   def partition(predicate, iterable):
-       """Partition entries into false entries and true entries.
-
-       If *predicate* is slow, consider wrapping it with functools.lru_cache().
-       """
-       # partition(is_odd, range(10)) → 0 2 4 6 8   and  1 3 5 7 9
-       t1, t2 = tee(iterable)
-       return filterfalse(predicate, t1), filter(predicate, t2)
-
    def subslices(seq):
        "Return all contiguous non-empty subslices of a sequence."
        # subslices('ABCD') → A AB ABC ABCD B BC BCD C CD D
        slices = starmap(slice, combinations(range(len(seq) + 1), 2))
-       return map(operator.getitem, repeat(seq), slices)
+       return map(getitem, repeat(seq), slices)
 
    def iter_index(iterable, value, start=0, stop=None):
        "Return indices where a value occurs in a sequence or iterable."
        # iter_index('AABCADEAF', 'A') → 0 1 4 7
        seq_index = getattr(iterable, 'index', None)
        if seq_index is None:
-           # Path for general iterables
            iterator = islice(iterable, start, stop)
            for i, element in enumerate(iterator, start):
                if element is value or element == value:
                    yield i
        else:
-           # Path for sequences with an index() method
            stop = len(iterable) if stop is None else stop
            i = start
-           try:
+           with suppress(ValueError):
                while True:
                    yield (i := seq_index(value, i, stop))
                    i += 1
-           except ValueError:
-               pass
 
-   def iter_except(func, exception, first=None):
+   def iter_except(function, exception, first=None):
        "Convert a call-until-exception interface to an iterator interface."
        # iter_except(d.popitem, KeyError) → non-blocking dictionary iterator
-       try:
+       with suppress(exception):
            if first is not None:
                yield first()
            while True:
-               yield func()
-       except exception:
-           pass
+               yield function()
 
 
 The following recipes have a more mathematical flavor:
@@ -975,19 +1010,20 @@ The following recipes have a more mathematical flavor:
 .. testcode::
 
    def powerset(iterable):
-       "powerset([1,2,3]) → () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"
+       "Subsequences of the iterable from shortest to longest."
+       # powerset([1,2,3]) → () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)
        s = list(iterable)
        return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
 
    def sum_of_squares(iterable):
        "Add up the squares of the input values."
        # sum_of_squares([10, 20, 30]) → 1400
-       return math.sumprod(*tee(iterable))
+       return sumprod(*tee(iterable))
 
-   def reshape(matrix, cols):
+   def reshape(matrix, columns):
        "Reshape a 2-D matrix to have a given number of columns."
        # reshape([(0, 1), (2, 3), (4, 5)], 3) →  (0, 1, 2), (3, 4, 5)
-       return batched(chain.from_iterable(matrix), cols, strict=True)
+       return batched(chain.from_iterable(matrix), columns, strict=True)
 
    def transpose(matrix):
        "Swap the rows and columns of a 2-D matrix."
@@ -998,7 +1034,7 @@ The following recipes have a more mathematical flavor:
        "Multiply two matrices."
        # matmul([(7, 5), (3, 5)], [(2, 5), (7, 9)]) → (49, 80), (41, 60)
        n = len(m2[0])
-       return batched(starmap(math.sumprod, product(m1, transpose(m2))), n)
+       return batched(starmap(sumprod, product(m1, transpose(m2))), n)
 
    def convolve(signal, kernel):
        """Discrete linear convolution of two iterables.
@@ -1019,7 +1055,7 @@ The following recipes have a more mathematical flavor:
        n = len(kernel)
        padded_signal = chain(repeat(0, n-1), signal, repeat(0, n-1))
        windowed_signal = sliding_window(padded_signal, n)
-       return map(math.sumprod, repeat(kernel), windowed_signal)
+       return map(sumprod, repeat(kernel), windowed_signal)
 
    def polynomial_from_roots(roots):
        """Compute a polynomial's coefficients from its roots.
@@ -1027,8 +1063,8 @@ The following recipes have a more mathematical flavor:
           (x - 5) (x + 4) (x - 3)  expands to:   x³ -4x² -17x + 60
        """
        # polynomial_from_roots([5, -4, 3]) → [1, -4, -17, 60]
-       factors = zip(repeat(1), map(operator.neg, roots))
-       return list(functools.reduce(convolve, factors, [1]))
+       factors = zip(repeat(1), map(neg, roots))
+       return list(reduce(convolve, factors, [1]))
 
    def polynomial_eval(coefficients, x):
        """Evaluate a polynomial at a specific value.
@@ -1041,7 +1077,7 @@ The following recipes have a more mathematical flavor:
        if not n:
            return type(x)(0)
        powers = map(pow, repeat(x), reversed(range(n)))
-       return math.sumprod(coefficients, powers)
+       return sumprod(coefficients, powers)
 
    def polynomial_derivative(coefficients):
        """Compute the first derivative of a polynomial.
@@ -1052,7 +1088,7 @@ The following recipes have a more mathematical flavor:
        # polynomial_derivative([1, -4, -17, 60]) → [3, -8, -17]
        n = len(coefficients)
        powers = reversed(range(1, n))
-       return list(map(operator.mul, coefficients, powers))
+       return list(map(mul, coefficients, powers))
 
    def sieve(n):
        "Primes less than n."
@@ -1060,7 +1096,7 @@ The following recipes have a more mathematical flavor:
        if n > 2:
            yield 2
        data = bytearray((0, 1)) * (n // 2)
-       for p in iter_index(data, 1, start=3, stop=math.isqrt(n) + 1):
+       for p in iter_index(data, 1, start=3, stop=isqrt(n) + 1):
            data[p*p : n : p+p] = bytes(len(range(p*p, n, p+p)))
        yield from iter_index(data, 1, start=3)
 
@@ -1069,7 +1105,7 @@ The following recipes have a more mathematical flavor:
        # factor(99) → 3 3 11
        # factor(1_000_000_000_000_007) → 47 59 360620266859
        # factor(1_000_000_000_000_403) → 1000000000000403
-       for prime in sieve(math.isqrt(n) + 1):
+       for prime in sieve(isqrt(n) + 1):
            while not n % prime:
                yield prime
                n //= prime
@@ -1078,6 +1114,11 @@ The following recipes have a more mathematical flavor:
        if n > 1:
            yield n
 
+   def is_prime(n):
+       "Return True if n is prime."
+       # is_prime(1_000_000_000_000_403) → True
+       return n > 1 and next(factor(n)) == n
+
    def totient(n):
        "Count of natural numbers up to n that are coprime to n."
        # https://mathworld.wolfram.com/TotientFunction.html
@@ -1154,15 +1195,29 @@ The following recipes have a more mathematical flavor:
     >>> list(it)
     ['d', 'e', 'f']
 
+
     >>> list(prepend(1, [2, 3, 4]))
     [1, 2, 3, 4]
 
+
     >>> list(enumerate('abc'))
     [(0, 'a'), (1, 'b'), (2, 'c')]
 
+
     >>> list(islice(tabulate(lambda x: 2*x), 4))
     [0, 2, 4, 6]
 
+
+    >>> for _ in loops(5):
+    ...     print('hi')
+    ...
+    hi
+    hi
+    hi
+    hi
+    hi
+
+
     >>> list(tail(3, 'ABCDEFG'))
     ['E', 'F', 'G']
     >>> # Verify the input is consumed greedily
@@ -1171,6 +1226,7 @@ The following recipes have a more mathematical flavor:
     >>> list(input_iterator)
     []
 
+
     >>> it = iter(range(10))
     >>> consume(it, 3)
     >>> # Verify the input is consumed lazily
@@ -1181,6 +1237,7 @@ The following recipes have a more mathematical flavor:
     >>> next(it, 'Done')
     'Done'
 
+
     >>> nth('abcde', 3)
     'd'
     >>> nth('abcde', 9) is None
@@ -1192,6 +1249,7 @@ The following recipes have a more mathematical flavor:
     >>> list(it)
     ['d', 'e']
 
+
     >>> [all_equal(s) for s in ('', 'A', 'AAAA', 'AAAB', 'AAABA')]
     [True, True, True, False, False]
     >>> [all_equal(s, key=str.casefold) for s in ('', 'A', 'AaAa', 'AAAB', 'AAABA')]
@@ -1205,24 +1263,19 @@ The following recipes have a more mathematical flavor:
     >>> ''.join(it)
     'bbccc'
 
+
     >>> quantify(range(99), lambda x: x%2==0)
     50
-
     >>> quantify([True, False, False, True, True])
     3
-
     >>> quantify(range(12), predicate=lambda x: x%2==1)
     6
 
+
     >>> a = [[1, 2, 3], [4, 5, 6]]
     >>> list(flatten(a))
     [1, 2, 3, 4, 5, 6]
 
-    >>> list(repeatfunc(pow, 5, 2, 3))
-    [8, 8, 8, 8, 8]
-
-    >>> take(5, map(int, repeatfunc(random.random)))
-    [0, 0, 0, 0, 0]
 
     >>> list(ncycles('abc', 3))
     ['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c']
@@ -1232,9 +1285,11 @@ The following recipes have a more mathematical flavor:
     >>> list(input_iterator)
     []
 
+
     >>> sum_of_squares([10, 20, 30])
     1400
 
+
     >>> list(reshape([(0, 1), (2, 3), (4, 5)], 3))
     [(0, 1, 2), (3, 4, 5)]
     >>> M = [(0, 1, 2, 3), (4, 5, 6, 7), (8, 9, 10, 11)]
@@ -1255,6 +1310,7 @@ The following recipes have a more mathematical flavor:
     >>> list(reshape(M, 12))
     [(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)]
 
+
     >>> list(transpose([(1, 2, 3), (11, 22, 33)]))
     [(1, 11), (2, 22), (3, 33)]
     >>> # Verify that the inputs are consumed lazily
@@ -1266,11 +1322,13 @@ The following recipes have a more mathematical flavor:
     >>> list(zip(input1, input2))
     [(2, 22), (3, 33)]
 
+
     >>> list(matmul([(7, 5), (3, 5)], [[2, 5], [7, 9]]))
     [(49, 80), (41, 60)]
     >>> list(matmul([[2, 5], [7, 9], [3, 4]], [[7, 11, 5, 4, 9], [3, 5, 2, 6, 3]]))
     [(29, 47, 20, 38, 33), (76, 122, 53, 82, 90), (33, 53, 23, 36, 39)]
 
+
     >>> list(convolve([1, -1, -20], [1, -3])) == [1, -4, -17, 60]
     True
     >>> data = [20, 40, 24, 32, 20, 28, 16]
@@ -1293,6 +1351,7 @@ The following recipes have a more mathematical flavor:
     >>> list(signal_iterator)
     [30, 40, 50]
 
+
     >>> from fractions import Fraction
     >>> from decimal import Decimal
     >>> polynomial_eval([1, -4, -17, 60], x=5)
@@ -1324,6 +1383,7 @@ The following recipes have a more mathematical flavor:
     >>> polynomial_eval([11, 2], 7) == 11 * 7 + 2
     True
 
+
     >>> polynomial_from_roots([5, -4, 3])
     [1, -4, -17, 60]
     >>> factored = lambda x: (x - 5) * (x + 4) * (x - 3)
@@ -1331,9 +1391,11 @@ The following recipes have a more mathematical flavor:
     >>> all(factored(x) == expanded(x) for x in range(-10, 11))
     True
 
+
     >>> polynomial_derivative([1, -4, -17, 60])
     [3, -8, -17]
 
+
     >>> list(iter_index('AABCADEAF', 'A'))
     [0, 1, 4, 7]
     >>> list(iter_index('AABCADEAF', 'B'))
@@ -1391,12 +1453,14 @@ The following recipes have a more mathematical flavor:
     >>> ''.join(input_iterator)
     'DEAF'
 
+
     >>> # Verify that the target value can be a sequence.
     >>> seq = [[10, 20], [30, 40], 30, 40, [30, 40], 50]
     >>> target = [30, 40]
     >>> list(iter_index(seq, target))
     [1, 4]
 
+
     >>> # Verify faithfulness to type specific index() method behaviors.
     >>> # For example, bytes and str perform continuous-subsequence searches
     >>> # that do not match the general behavior specified
@@ -1426,6 +1490,24 @@ The following recipes have a more mathematical flavor:
     >>> set(sieve(10_000)).isdisjoint(carmichael)
     True
 
+
+    >>> small_primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]
+    >>> list(filter(is_prime, range(-100, 100))) == small_primes
+    True
+    >>> carmichael = {561, 1105, 1729, 2465, 2821, 6601, 8911}  # https://oeis.org/A002997
+    >>> any(map(is_prime, carmichael))
+    False
+    >>> # https://www.wolframalpha.com/input?i=is+128884753939+prime
+    >>> is_prime(128_884_753_939)           # large prime
+    True
+    >>> is_prime(999953 * 999983)           # large semiprime
+    False
+    >>> is_prime(1_000_000_000_000_007)     # factor() example
+    False
+    >>> is_prime(1_000_000_000_000_403)     # factor() example
+    True
+
+
     >>> list(factor(99))                    # Code example 1
     [3, 3, 11]
     >>> list(factor(1_000_000_000_000_007)) # Code example 2
@@ -1471,6 +1553,7 @@ The following recipes have a more mathematical flavor:
     >>> all(list(factor(n)) == sorted(factor(n)) for n in range(2_000))
     True
 
+
     >>> totient(0)  # https://www.wolframalpha.com/input?i=totient+0
     0
     >>> first_totients = [1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 12, 6, 8, 8, 16, 6,
@@ -1490,9 +1573,15 @@ The following recipes have a more mathematical flavor:
     >>> totient(6 ** 20) == 1 * 2**19 * 2 * 3**19    # repeated primes
     True
 
+
     >>> list(flatten([('a', 'b'), (), ('c', 'd', 'e'), ('f',), ('g', 'h', 'i')]))
     ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i']
 
+
+    >>> list(repeatfunc(pow, 5, 2, 3))
+    [8, 8, 8, 8, 8]
+    >>> take(5, map(int, repeatfunc(random.random)))
+    [0, 0, 0, 0, 0]
     >>> random.seed(85753098575309)
     >>> list(repeatfunc(random.random, 3))
     [0.16370491282496968, 0.45889608687313455, 0.3747076837820118]
@@ -1501,9 +1590,11 @@ The following recipes have a more mathematical flavor:
     >>> list(repeatfunc(pow, 3, 2, 5))
     [32, 32, 32]
 
+
     >>> list(grouper('abcdefg', 3, fillvalue='x'))
     [('a', 'b', 'c'), ('d', 'e', 'f'), ('g', 'x', 'x')]
 
+
     >>> it = grouper('abcdefg', 3, incomplete='strict')
     >>> next(it)
     ('a', 'b', 'c')
@@ -1517,6 +1608,7 @@ The following recipes have a more mathematical flavor:
     >>> list(grouper('abcdefg', n=3, incomplete='ignore'))
     [('a', 'b', 'c'), ('d', 'e', 'f')]
 
+
     >>> list(sliding_window('ABCDEFG', 1))
     [('A',), ('B',), ('C',), ('D',), ('E',), ('F',), ('G',)]
     >>> list(sliding_window('ABCDEFG', 2))
@@ -1546,6 +1638,7 @@ The following recipes have a more mathematical flavor:
     ...
     'zero or negative n not supported'
 
+
     >>> list(roundrobin('abc', 'd', 'ef'))
     ['a', 'd', 'e', 'b', 'f', 'c']
     >>> ranges = [range(5, 1000), range(4, 3000), range(0), range(3, 2000), range(2, 5000), range(1, 3500)]
@@ -1559,38 +1652,19 @@ The following recipes have a more mathematical flavor:
     >>> ''.join(chain(*input_iterators))
     'dijkopqr'
 
-    >>> def is_odd(x):
-    ...     return x % 2 == 1
-
-    >>> evens, odds = partition(is_odd, range(10))
-    >>> list(evens)
-    [0, 2, 4, 6, 8]
-    >>> list(odds)
-    [1, 3, 5, 7, 9]
-    >>> # Verify that the input is consumed lazily
-    >>> input_iterator = iter(range(10))
-    >>> evens, odds = partition(is_odd, input_iterator)
-    >>> next(odds)
-    1
-    >>> next(odds)
-    3
-    >>> next(evens)
-    0
-    >>> list(input_iterator)
-    [4, 5, 6, 7, 8, 9]
 
     >>> list(subslices('ABCD'))
     ['A', 'AB', 'ABC', 'ABCD', 'B', 'BC', 'BCD', 'C', 'CD', 'D']
 
+
     >>> list(powerset([1,2,3]))
     [(), (1,), (2,), (3,), (1, 2), (1, 3), (2, 3), (1, 2, 3)]
-
     >>> all(len(list(powerset(range(n)))) == 2**n for n in range(18))
     True
-
     >>> list(powerset('abcde')) == sorted(sorted(set(powerset('abcde'))), key=len)
     True
 
+
     >>> list(unique_everseen('AAAABBBCCDAABBB'))
     ['A', 'B', 'C', 'D']
     >>> list(unique_everseen('ABBCcAD', str.casefold))
@@ -1605,6 +1679,7 @@ The following recipes have a more mathematical flavor:
     >>> ''.join(input_iterator)
     'AAABBBCCDAABBB'
 
+
     >>> list(unique_justseen('AAAABBBCCDAABBB'))
     ['A', 'B', 'C', 'D', 'A', 'B']
     >>> list(unique_justseen('ABBCcAD', str.casefold))
@@ -1619,6 +1694,15 @@ The following recipes have a more mathematical flavor:
     >>> ''.join(input_iterator)
     'AAABBBCCDAABBB'
 
+
+    >>> list(unique([[1, 2], [3, 4], [1, 2]]))
+    [[1, 2], [3, 4]]
+    >>> list(unique('ABBcCAD', str.casefold))
+    ['A', 'B', 'c', 'D']
+    >>> list(unique('ABBcCAD', str.casefold, reverse=True))
+    ['D', 'c', 'B', 'A']
+
+
     >>> d = dict(a=1, b=2, c=3)
     >>> it = iter_except(d.popitem, KeyError)
     >>> d['d'] = 4
@@ -1636,6 +1720,7 @@ The following recipes have a more mathematical flavor:
     >>> next(it, 'empty')
     'empty'
 
+
     >>> first_true('ABC0DEF1', '9', str.isdigit)
     '0'
     >>> # Verify that inputs are consumed lazily
@@ -1651,7 +1736,7 @@ The following recipes have a more mathematical flavor:
 
     # Old recipes and their tests which are guaranteed to continue to work.
 
-    def sumprod(vec1, vec2):
+    def old_sumprod_recipe(vec1, vec2):
         "Compute a sum of products."
         return sum(starmap(operator.mul, zip(vec1, vec2, strict=True)))
 
@@ -1716,21 +1801,36 @@ The following recipes have a more mathematical flavor:
 
        return true_iterator(), chain(transition, it)
 
+    def partition(predicate, iterable):
+        """Partition entries into false entries and true entries.
+
+        If *predicate* is slow, consider wrapping it with functools.lru_cache().
+        """
+        # partition(is_odd, range(10)) → 0 2 4 6 8   and  1 3 5 7 9
+        t1, t2 = tee(iterable)
+        return filterfalse(predicate, t1), filter(predicate, t2)
+
+
+
 .. doctest::
     :hide:
 
     >>> dotproduct([1,2,3], [4,5,6])
     32
 
-    >>> sumprod([1,2,3], [4,5,6])
+
+    >>> old_sumprod_recipe([1,2,3], [4,5,6])
     32
 
+
     >>> list(islice(pad_none('abc'), 0, 6))
     ['a', 'b', 'c', None, None, None]
 
+
     >>> list(triplewise('ABCDEFG'))
     [('A', 'B', 'C'), ('B', 'C', 'D'), ('C', 'D', 'E'), ('D', 'E', 'F'), ('E', 'F', 'G')]
 
+
     >>> population = 'ABCDEFGH'
     >>> for r in range(len(population) + 1):
     ...     seq = list(combinations(population, r))
@@ -1738,16 +1838,38 @@ The following recipes have a more mathematical flavor:
     ...         assert nth_combination(population, r, i) == seq[i]
     ...     for i in range(-len(seq), 0):
     ...         assert nth_combination(population, r, i) == seq[i]
-
+    ...
     >>> iterable = 'abcde'
     >>> r = 3
     >>> combos = list(combinations(iterable, r))
     >>> all(nth_combination(iterable, r, i) == comb for i, comb in enumerate(combos))
     True
 
+
     >>> it = iter('ABCdEfGhI')
     >>> all_upper, remainder = before_and_after(str.isupper, it)
     >>> ''.join(all_upper)
     'ABC'
     >>> ''.join(remainder)
     'dEfGhI'
+
+
+    >>> def is_odd(x):
+    ...     return x % 2 == 1
+    ...
+    >>> evens, odds = partition(is_odd, range(10))
+    >>> list(evens)
+    [0, 2, 4, 6, 8]
+    >>> list(odds)
+    [1, 3, 5, 7, 9]
+    >>> # Verify that the input is consumed lazily
+    >>> input_iterator = iter(range(10))
+    >>> evens, odds = partition(is_odd, input_iterator)
+    >>> next(odds)
+    1
+    >>> next(odds)
+    3
+    >>> next(evens)
+    0
+    >>> list(input_iterator)
+    [4, 5, 6, 7, 8, 9]
diff --git a/Doc/library/json.rst b/Doc/library/json.rst
index c82ff9dc325b4c..22636027f9dbaf 100644
--- a/Doc/library/json.rst
+++ b/Doc/library/json.rst
@@ -1,5 +1,5 @@
-:mod:`json` --- JSON encoder and decoder
-========================================
+:mod:`!json` --- JSON encoder and decoder
+=========================================
 
 .. module:: json
    :synopsis: Encode and decode the JSON format.
@@ -13,7 +13,7 @@
 
 `JSON (JavaScript Object Notation) <https://json.org>`_, specified by
 :rfc:`7159` (which obsoletes :rfc:`4627`) and by
-`ECMA-404 <https://www.ecma-international.org/publications-and-standards/standards/ecma-404/>`_,
+`ECMA-404 <https://ecma-international.org/publications-and-standards/standards/ecma-404/>`_,
 is a lightweight data interchange format inspired by
 `JavaScript <https://en.wikipedia.org/wiki/JavaScript>`_ object literal syntax
 (although it is not a strict subset of JavaScript [#rfc-errata]_ ).
@@ -151,69 +151,94 @@ Basic Usage
                    sort_keys=False, **kw)
 
    Serialize *obj* as a JSON formatted stream to *fp* (a ``.write()``-supporting
-   :term:`file-like object`) using this :ref:`conversion table
+   :term:`file-like object`) using this :ref:`Python-to-JSON conversion table
    <py-to-json-table>`.
 
-   If *skipkeys* is true (default: ``False``), then dict keys that are not
-   of a basic type (:class:`str`, :class:`int`, :class:`float`, :class:`bool`,
-   ``None``) will be skipped instead of raising a :exc:`TypeError`.
-
-   The :mod:`json` module always produces :class:`str` objects, not
-   :class:`bytes` objects. Therefore, ``fp.write()`` must support :class:`str`
-   input.
-
-   If *ensure_ascii* is true (the default), the output is guaranteed to
-   have all incoming non-ASCII characters escaped.  If *ensure_ascii* is
-   false, these characters will be output as-is.
-
-   If *check_circular* is false (default: ``True``), then the circular
-   reference check for container types will be skipped and a circular reference
-   will result in a :exc:`RecursionError` (or worse).
+   .. note::
 
-   If *allow_nan* is false (default: ``True``), then it will be a
-   :exc:`ValueError` to serialize out of range :class:`float` values (``nan``,
-   ``inf``, ``-inf``) in strict compliance of the JSON specification.
-   If *allow_nan* is true, their JavaScript equivalents (``NaN``,
-   ``Infinity``, ``-Infinity``) will be used.
+      Unlike :mod:`pickle` and :mod:`marshal`, JSON is not a framed protocol,
+      so trying to serialize multiple objects with repeated calls to
+      :func:`dump` using the same *fp* will result in an invalid JSON file.
 
-   If *indent* is a non-negative integer or string, then JSON array elements and
-   object members will be pretty-printed with that indent level.  An indent level
-   of 0, negative, or ``""`` will only insert newlines.  ``None`` (the default)
-   selects the most compact representation. Using a positive integer indent
-   indents that many spaces per level.  If *indent* is a string (such as ``"\t"``),
-   that string is used to indent each level.
+   :param object obj:
+      The Python object to be serialized.
+
+   :param fp:
+      The file-like object *obj* will be serialized to.
+      The :mod:`!json` module always produces :class:`str` objects,
+      not :class:`bytes` objects,
+      therefore ``fp.write()`` must support :class:`str` input.
+   :type fp: :term:`file-like object`
+
+   :param bool skipkeys:
+      If ``True``, keys that are not of a basic type
+      (:class:`str`, :class:`int`, :class:`float`, :class:`bool`, ``None``)
+      will be skipped instead of raising a :exc:`TypeError`.
+      Default ``False``.
+
+   :param bool ensure_ascii:
+      If ``True`` (the default), the output is guaranteed to
+      have all incoming non-ASCII characters escaped.
+      If ``False``, these characters will be outputted as-is.
+
+   :param bool check_circular:
+      If ``False``, the circular reference check for container types is skipped
+      and a circular reference will result in a :exc:`RecursionError` (or worse).
+      Default ``True``.
+
+   :param bool allow_nan:
+      If ``False``, serialization of out-of-range :class:`float` values
+      (``nan``, ``inf``, ``-inf``) will result in a :exc:`ValueError`,
+      in strict compliance with the JSON specification.
+      If ``True`` (the default), their JavaScript equivalents
+      (``NaN``, ``Infinity``, ``-Infinity``) are used.
+
+   :param cls:
+      If set, a custom JSON encoder with the
+      :meth:`~JSONEncoder.default` method overridden,
+      for serializing into custom datatypes.
+      If ``None`` (the default), :class:`!JSONEncoder` is used.
+   :type cls: a :class:`JSONEncoder` subclass
+
+   :param indent:
+      If a positive integer or string, JSON array elements and
+      object members will be pretty-printed with that indent level.
+      A positive integer indents that many spaces per level;
+      a string (such as ``"\t"``) is used to indent each level.
+      If zero, negative, or ``""`` (the empty string),
+      only newlines are inserted.
+      If ``None`` (the default), the most compact representation is used.
+   :type indent: int | str | None
+
+   :param separators:
+      A two-tuple: ``(item_separator, key_separator)``.
+      If ``None`` (the default), *separators* defaults to
+      ``(', ', ': ')`` if *indent* is ``None``,
+      and ``(',', ': ')`` otherwise.
+      For the most compact JSON,
+      specify ``(',', ':')`` to eliminate whitespace.
+   :type separators: tuple | None
+
+   :param default:
+      A function that is called for objects that can't otherwise be serialized.
+      It should return a JSON encodable version of the object
+      or raise a :exc:`TypeError`.
+      If ``None`` (the default), :exc:`!TypeError` is raised.
+   :type default: :term:`callable` | None
+
+   :param bool sort_keys:
+      If ``True``, dictionaries will be outputted sorted by key.
+      Default ``False``.
 
    .. versionchanged:: 3.2
       Allow strings for *indent* in addition to integers.
 
-   If specified, *separators* should be an ``(item_separator, key_separator)``
-   tuple.  The default is ``(', ', ': ')`` if *indent* is ``None`` and
-   ``(',', ': ')`` otherwise.  To get the most compact JSON representation,
-   you should specify ``(',', ':')`` to eliminate whitespace.
-
    .. versionchanged:: 3.4
       Use ``(',', ': ')`` as default if *indent* is not ``None``.
 
-   If specified, *default* should be a function that gets called for objects that
-   can't otherwise be serialized.  It should return a JSON encodable version of
-   the object or raise a :exc:`TypeError`.  If not specified, :exc:`TypeError`
-   is raised.
-
-   If *sort_keys* is true (default: ``False``), then the output of
-   dictionaries will be sorted by key.
-
-   To use a custom :class:`JSONEncoder` subclass (e.g. one that overrides the
-   :meth:`~JSONEncoder.default` method to serialize additional types), specify it with the
-   *cls* kwarg; otherwise :class:`JSONEncoder` is used.
-
    .. versionchanged:: 3.6
       All optional parameters are now :ref:`keyword-only <keyword-only_parameter>`.
 
-   .. note::
-
-      Unlike :mod:`pickle` and :mod:`marshal`, JSON is not a framed protocol,
-      so trying to serialize multiple objects with repeated calls to
-      :func:`dump` using the same *fp* will result in an invalid JSON file.
 
 .. function:: dumps(obj, *, skipkeys=False, ensure_ascii=True, \
                     check_circular=True, allow_nan=True, cls=None, \
@@ -233,36 +258,86 @@ Basic Usage
       the original one. That is, ``loads(dumps(x)) != x`` if x has non-string
       keys.
 
-.. function:: load(fp, *, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw)
-
-   Deserialize *fp* (a ``.read()``-supporting :term:`text file` or
-   :term:`binary file` containing a JSON document) to a Python object using
-   this :ref:`conversion table <json-to-py-table>`.
-
-   *object_hook* is an optional function that will be called with the result of
-   any object literal decoded (a :class:`dict`).  The return value of
-   *object_hook* will be used instead of the :class:`dict`.  This feature can be used
-   to implement custom decoders (e.g. `JSON-RPC <https://www.jsonrpc.org>`_
-   class hinting).
-
-   *object_pairs_hook* is an optional function that will be called with the
-   result of any object literal decoded with an ordered list of pairs.  The
-   return value of *object_pairs_hook* will be used instead of the
-   :class:`dict`.  This feature can be used to implement custom decoders.
-   If *object_hook* is also defined, the *object_pairs_hook* takes priority.
+.. function:: load(fp, *, cls=None, object_hook=None, parse_float=None, \
+                   parse_int=None, parse_constant=None, \
+                   object_pairs_hook=None, **kw)
+
+   Deserialize *fp* to a Python object
+   using the :ref:`JSON-to-Python conversion table <json-to-py-table>`.
+
+   :param fp:
+      A ``.read()``-supporting :term:`text file` or :term:`binary file`
+      containing the JSON document to be deserialized.
+   :type fp: :term:`file-like object`
+
+   :param cls:
+      If set, a custom JSON decoder.
+      Additional keyword arguments to :func:`!load`
+      will be passed to the constructor of *cls*.
+      If ``None`` (the default), :class:`!JSONDecoder` is used.
+   :type cls: a :class:`JSONDecoder` subclass
+
+   :param object_hook:
+      If set, a function that is called with the result of
+      any object literal decoded (a :class:`dict`).
+      The return value of this function will be used
+      instead of the :class:`dict`.
+      This feature can be used to implement custom decoders,
+      for example `JSON-RPC <https://www.jsonrpc.org>`_ class hinting.
+      Default ``None``.
+   :type object_hook: :term:`callable` | None
+
+   :param object_pairs_hook:
+      If set, a function that is called with the result of
+      any object literal decoded with an ordered list of pairs.
+      The return value of this function will be used
+      instead of the :class:`dict`.
+      This feature can be used to implement custom decoders.
+      If *object_hook* is also set, *object_pairs_hook* takes priority.
+      Default ``None``.
+   :type object_pairs_hook: :term:`callable` | None
+
+   :param parse_float:
+      If set, a function that is called with
+      the string of every JSON float to be decoded.
+      If ``None`` (the default), it is equivalent to ``float(num_str)``.
+      This can be used to parse JSON floats into custom datatypes,
+      for example :class:`decimal.Decimal`.
+   :type parse_float: :term:`callable` | None
+
+   :param parse_int:
+      If set, a function that is called with
+      the string of every JSON int to be decoded.
+      If ``None`` (the default), it is equivalent to ``int(num_str)``.
+      This can be used to parse JSON integers into custom datatypes,
+      for example :class:`float`.
+   :type parse_int: :term:`callable` | None
+
+   :param parse_constant:
+      If set, a function that is called with one of the following strings:
+      ``'-Infinity'``, ``'Infinity'``, or ``'NaN'``.
+      This can be used to raise an exception
+      if invalid JSON numbers are encountered.
+      Default ``None``.
+   :type parse_constant: :term:`callable` | None
+
+   :raises JSONDecodeError:
+      When the data being deserialized is not a valid JSON document.
+
+   :raises UnicodeDecodeError:
+      When the data being deserialized does not contain
+      UTF-8, UTF-16 or UTF-32 encoded data.
 
    .. versionchanged:: 3.1
-      Added support for *object_pairs_hook*.
 
-   *parse_float*, if specified, will be called with the string of every JSON
-   float to be decoded.  By default, this is equivalent to ``float(num_str)``.
-   This can be used to use another datatype or parser for JSON floats
-   (e.g. :class:`decimal.Decimal`).
+      * Added the optional *object_pairs_hook* parameter.
+      * *parse_constant* doesn't get called on 'null', 'true', 'false' anymore.
+
+   .. versionchanged:: 3.6
 
-   *parse_int*, if specified, will be called with the string of every JSON int
-   to be decoded.  By default, this is equivalent to ``int(num_str)``.  This can
-   be used to use another datatype or parser for JSON integers
-   (e.g. :class:`float`).
+      * All optional parameters are now :ref:`keyword-only <keyword-only_parameter>`.
+      * *fp* can now be a :term:`binary file`.
+        The input encoding should be UTF-8, UTF-16 or UTF-32.
 
    .. versionchanged:: 3.11
       The default *parse_int* of :func:`int` now limits the maximum length of
@@ -270,39 +345,13 @@ Basic Usage
       conversion length limitation <int_max_str_digits>` to help avoid denial
       of service attacks.
 
-   *parse_constant*, if specified, will be called with one of the following
-   strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.
-   This can be used to raise an exception if invalid JSON numbers
-   are encountered.
-
-   .. versionchanged:: 3.1
-      *parse_constant* doesn't get called on 'null', 'true', 'false' anymore.
-
-   To use a custom :class:`JSONDecoder` subclass, specify it with the ``cls``
-   kwarg; otherwise :class:`JSONDecoder` is used.  Additional keyword arguments
-   will be passed to the constructor of the class.
-
-   If the data being deserialized is not a valid JSON document, a
-   :exc:`JSONDecodeError` will be raised.
-
-   .. versionchanged:: 3.6
-      All optional parameters are now :ref:`keyword-only <keyword-only_parameter>`.
-
-   .. versionchanged:: 3.6
-      *fp* can now be a :term:`binary file`. The input encoding should be
-      UTF-8, UTF-16 or UTF-32.
-
 .. function:: loads(s, *, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw)
 
-   Deserialize *s* (a :class:`str`, :class:`bytes` or :class:`bytearray`
+   Identical to :func:`load`, but instead of a file-like object,
+   deserialize *s* (a :class:`str`, :class:`bytes` or :class:`bytearray`
    instance containing a JSON document) to a Python object using this
    :ref:`conversion table <json-to-py-table>`.
 
-   The other arguments have the same meaning as in :func:`load`.
-
-   If the data being deserialized is not a valid JSON document, a
-   :exc:`JSONDecodeError` will be raised.
-
    .. versionchanged:: 3.6
       *s* can now be of type :class:`bytes` or :class:`bytearray`. The
       input encoding should be UTF-8, UTF-16 or UTF-32.
@@ -345,34 +394,33 @@ Encoders and Decoders
    It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as their
    corresponding ``float`` values, which is outside the JSON spec.
 
-   *object_hook*, if specified, will be called with the result of every JSON
-   object decoded and its return value will be used in place of the given
-   :class:`dict`.  This can be used to provide custom deserializations (e.g. to
-   support `JSON-RPC <https://www.jsonrpc.org>`_ class hinting).
+   *object_hook* is an optional function that will be called with the result of
+   every JSON object decoded and its return value will be used in place of the
+   given :class:`dict`.  This can be used to provide custom deserializations
+   (e.g. to support `JSON-RPC <https://www.jsonrpc.org>`_ class hinting).
 
-   *object_pairs_hook*, if specified will be called with the result of every
-   JSON object decoded with an ordered list of pairs.  The return value of
-   *object_pairs_hook* will be used instead of the :class:`dict`.  This
-   feature can be used to implement custom decoders.  If *object_hook* is also
-   defined, the *object_pairs_hook* takes priority.
+   *object_pairs_hook* is an optional function that will be called with the
+   result of every JSON object decoded with an ordered list of pairs.  The
+   return value of *object_pairs_hook* will be used instead of the
+   :class:`dict`.  This feature can be used to implement custom decoders.  If
+   *object_hook* is also defined, the *object_pairs_hook* takes priority.
 
    .. versionchanged:: 3.1
       Added support for *object_pairs_hook*.
 
-   *parse_float*, if specified, will be called with the string of every JSON
-   float to be decoded.  By default, this is equivalent to ``float(num_str)``.
-   This can be used to use another datatype or parser for JSON floats
-   (e.g. :class:`decimal.Decimal`).
+   *parse_float* is an optional function that will be called with the string of
+   every JSON float to be decoded.  By default, this is equivalent to
+   ``float(num_str)``.  This can be used to use another datatype or parser for
+   JSON floats (e.g. :class:`decimal.Decimal`).
 
-   *parse_int*, if specified, will be called with the string of every JSON int
-   to be decoded.  By default, this is equivalent to ``int(num_str)``.  This can
-   be used to use another datatype or parser for JSON integers
-   (e.g. :class:`float`).
+   *parse_int* is an optional function that will be called with the string of
+   every JSON int to be decoded.  By default, this is equivalent to
+   ``int(num_str)``.  This can be used to use another datatype or parser for
+   JSON integers (e.g. :class:`float`).
 
-   *parse_constant*, if specified, will be called with one of the following
-   strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.
-   This can be used to raise an exception if invalid JSON numbers
-   are encountered.
+   *parse_constant* is an optional function that will be called with one of the
+   following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.  This can be
+   used to raise an exception if invalid JSON numbers are encountered.
 
    If *strict* is false (``True`` is the default), then control characters
    will be allowed inside strings.  Control characters in this context are
@@ -559,7 +607,7 @@ Standard Compliance and Interoperability
 ----------------------------------------
 
 The JSON format is specified by :rfc:`7159` and by
-`ECMA-404 <https://www.ecma-international.org/publications-and-standards/standards/ecma-404/>`_.
+`ECMA-404 <https://ecma-international.org/publications-and-standards/standards/ecma-404/>`_.
 This section details this module's level of compliance with the RFC.
 For simplicity, :class:`JSONEncoder` and :class:`JSONDecoder` subclasses, and
 parameters other than those explicitly mentioned, are not considered.
diff --git a/Doc/library/keyword.rst b/Doc/library/keyword.rst
index c3b4699cb05af6..ac57140f888024 100644
--- a/Doc/library/keyword.rst
+++ b/Doc/library/keyword.rst
@@ -1,5 +1,5 @@
-:mod:`keyword` --- Testing for Python keywords
-==============================================
+:mod:`!keyword` --- Testing for Python keywords
+===============================================
 
 .. module:: keyword
    :synopsis: Test whether a string is a keyword in Python.
diff --git a/Doc/library/linecache.rst b/Doc/library/linecache.rst
index dd9f4ee45ba82e..88c6079a05b7fa 100644
--- a/Doc/library/linecache.rst
+++ b/Doc/library/linecache.rst
@@ -1,5 +1,5 @@
-:mod:`linecache` --- Random access to text lines
-================================================
+:mod:`!linecache` --- Random access to text lines
+=================================================
 
 .. module:: linecache
    :synopsis: Provides random access to individual lines from text files.
diff --git a/Doc/library/locale.rst b/Doc/library/locale.rst
index 414979524e57b6..c783e8ea4e325d 100644
--- a/Doc/library/locale.rst
+++ b/Doc/library/locale.rst
@@ -1,5 +1,5 @@
-:mod:`locale` --- Internationalization services
-===============================================
+:mod:`!locale` --- Internationalization services
+================================================
 
 .. module:: locale
    :synopsis: Internationalization services.
@@ -281,7 +281,8 @@ The :mod:`locale` module defines the following exception and functions:
 
    .. data:: ERA
 
-      Get a string that represents the era used in the current locale.
+      Get a string which describes how years are counted and displayed for
+      each era in a locale.
 
       Most locales do not define this value.  An example of a locale which does
       define this value is the Japanese one.  In Japan, the traditional
@@ -290,9 +291,10 @@ The :mod:`locale` module defines the following exception and functions:
 
       Normally it should not be necessary to use this value directly. Specifying
       the ``E`` modifier in their format strings causes the :func:`time.strftime`
-      function to use this information.  The format of the returned string is not
-      specified, and therefore you should not assume knowledge of it on different
-      systems.
+      function to use this information.
+      The format of the returned string is specified in *The Open Group Base
+      Specifications Issue 8*, paragraph `7.3.5.2 LC_TIME C-Language Access
+      <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap07.html#tag_07_03_05_02>`_.
 
    .. data:: ERA_D_T_FMT
 
@@ -311,8 +313,9 @@ The :mod:`locale` module defines the following exception and functions:
 
    .. data:: ALT_DIGITS
 
-      Get a representation of up to 100 values used to represent the values
-      0 to 99.
+      Get a string consisting of up to 100 semicolon-separated symbols used
+      to represent the values 0 to 99 in a locale-specific way.
+      In most locales this is an empty string.
 
 
 .. function:: getdefaultlocale([envvars])
@@ -424,7 +427,7 @@ The :mod:`locale` module defines the following exception and functions:
 .. function:: format_string(format, val, grouping=False, monetary=False)
 
    Formats a number *val* according to the current :const:`LC_NUMERIC` setting.
-   The format follows the conventions of the ``%`` operator.  For floating point
+   The format follows the conventions of the ``%`` operator.  For floating-point
    values, the decimal point is modified if appropriate.  If *grouping* is ``True``,
    also takes the grouping into account.
 
@@ -455,7 +458,7 @@ The :mod:`locale` module defines the following exception and functions:
 
 .. function:: str(float)
 
-   Formats a floating point number using the same format as the built-in function
+   Formats a floating-point number using the same format as the built-in function
    ``str(float)``, but takes the decimal point into account.
 
 
diff --git a/Doc/library/logging.config.rst b/Doc/library/logging.config.rst
index 13850c91446da5..0e9dc33ae2123a 100644
--- a/Doc/library/logging.config.rst
+++ b/Doc/library/logging.config.rst
@@ -1,5 +1,5 @@
-:mod:`logging.config` --- Logging configuration
-===============================================
+:mod:`!logging.config` --- Logging configuration
+================================================
 
 .. module:: logging.config
    :synopsis: Configuration of the logging module.
@@ -69,7 +69,7 @@ in :mod:`logging` itself) and defining handlers which are declared either in
              dictConfigClass(config).configure()
 
    For example, a subclass of :class:`DictConfigurator` could call
-   ``DictConfigurator.__init__()`` in its own :meth:`__init__()`, then
+   ``DictConfigurator.__init__()`` in its own :meth:`__init__`, then
    set up custom prefixes which would be usable in the subsequent
    :meth:`configure` call. :attr:`dictConfigClass` would be bound to
    this new subclass, and then :func:`dictConfig` could be called exactly as
@@ -753,13 +753,17 @@ The ``queue`` and ``listener`` keys are optional.
 
 If the ``queue`` key is present, the corresponding value can be one of the following:
 
-* An actual instance of :class:`queue.Queue` or a subclass thereof. This is of course
-  only possible if you are constructing or modifying the configuration dictionary in
-  code.
+* An object implementing the :meth:`Queue.put_nowait <queue.Queue.put_nowait>`
+  and :meth:`Queue.get <queue.Queue.get>` public API. For instance, this may be
+  an actual instance of :class:`queue.Queue` or a subclass thereof, or a proxy
+  obtained by :meth:`multiprocessing.managers.SyncManager.Queue`.
+
+  This is of course only possible if you are constructing or modifying
+  the configuration dictionary in code.
 
 * A string that resolves to a callable which, when called with no arguments, returns
-  the :class:`queue.Queue` instance to use. That callable could be a
-  :class:`queue.Queue` subclass or a function which returns a suitable queue instance,
+  the queue instance to use. That callable could be a :class:`queue.Queue` subclass
+  or a function which returns a suitable queue instance,
   such as ``my.module.queue_factory()``.
 
 * A dict with a ``'()'`` key which is constructed in the usual way as discussed in
diff --git a/Doc/library/logging.handlers.rst b/Doc/library/logging.handlers.rst
index 2fe9370333beaf..5a081f9e7add99 100644
--- a/Doc/library/logging.handlers.rst
+++ b/Doc/library/logging.handlers.rst
@@ -1,5 +1,5 @@
-:mod:`logging.handlers` --- Logging handlers
-============================================
+:mod:`!logging.handlers` --- Logging handlers
+=============================================
 
 .. module:: logging.handlers
    :synopsis: Handlers for the logging module.
@@ -66,7 +66,7 @@ and :meth:`flush` methods).
 
       :param stream: The stream that the handler should use.
 
-      :return: the old stream, if the stream was changed, or *None* if it wasn't.
+      :return: the old stream, if the stream was changed, or ``None`` if it wasn't.
 
       .. versionadded:: 3.7
 
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index a733b288ecb6d0..8ab107d2a33e44 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1,5 +1,5 @@
-:mod:`logging` --- Logging facility for Python
-==============================================
+:mod:`!logging` --- Logging facility for Python
+===============================================
 
 .. module:: logging
    :synopsis: Flexible event logging system for applications.
@@ -109,11 +109,11 @@ The ``name`` is potentially a period-separated hierarchical value, like
 Loggers that are further down in the hierarchical list are children of loggers
 higher up in the list.  For example, given a logger with a name of ``foo``,
 loggers with names of ``foo.bar``, ``foo.bar.baz``, and ``foo.bam`` are all
-descendants of ``foo``.  The logger name hierarchy is analogous to the Python
-package hierarchy, and identical to it if you organise your loggers on a
-per-module basis using the recommended construction
-``logging.getLogger(__name__)``.  That's because in a module, ``__name__``
-is the module's name in the Python package namespace.
+descendants of ``foo``.  In addition, all loggers are descendants of the root
+logger. The logger name hierarchy is analogous to the Python package hierarchy,
+and identical to it if you organise your loggers on a per-module basis using
+the recommended construction ``logging.getLogger(__name__)``.  That's because
+in a module, ``__name__`` is the module's name in the Python package namespace.
 
 
 .. class:: Logger
@@ -304,7 +304,8 @@ is the module's name in the Python package namespace.
       parameter mirrors the equivalent one in the :mod:`warnings` module.
 
       The fourth keyword argument is *extra* which can be used to pass a
-      dictionary which is used to populate the __dict__ of the :class:`LogRecord`
+      dictionary which is used to populate the :attr:`~object.__dict__` of the
+      :class:`LogRecord`
       created for the logging event with user-defined attributes. These custom
       attributes can then be used as you like. For example, they could be
       incorporated into logged messages. For example::
@@ -352,10 +353,6 @@ is the module's name in the Python package namespace.
       .. versionchanged:: 3.8
          The *stacklevel* parameter was added.
 
-      .. versionchanged:: 3.13
-         Remove the undocumented ``warn()`` method which was an alias to the
-         :meth:`warning` method.
-
 
    .. method:: Logger.info(msg, *args, **kwargs)
 
@@ -368,6 +365,10 @@ is the module's name in the Python package namespace.
       Logs a message with level :const:`WARNING` on this logger. The arguments are
       interpreted as for :meth:`debug`.
 
+      .. note:: There is an obsolete method ``warn`` which is functionally
+         identical to ``warning``. As ``warn`` is deprecated, please do not use
+         it - use ``warning`` instead.
+
    .. method:: Logger.error(msg, *args, **kwargs)
 
       Logs a message with level :const:`ERROR` on this logger. The arguments are
@@ -1098,11 +1099,11 @@ information into logging calls. For a usage example, see the section on
 
    .. attribute:: manager
 
-      Delegates to the underlying :attr:`!manager`` on *logger*.
+      Delegates to the underlying :attr:`!manager` on *logger*.
 
    .. attribute:: _log
 
-      Delegates to the underlying :meth:`!_log`` method on *logger*.
+      Delegates to the underlying :meth:`!_log` method on *logger*.
 
    In addition to the above, :class:`LoggerAdapter` supports the following
    methods of :class:`Logger`: :meth:`~Logger.debug`, :meth:`~Logger.info`,
@@ -1124,11 +1125,6 @@ information into logging calls. For a usage example, see the section on
       Attribute :attr:`!manager` and method :meth:`!_log` were added, which
       delegate to the underlying logger and allow adapters to be nested.
 
-   .. versionchanged:: 3.13
-
-      Remove the undocumented :meth:`!warn`` method which was an alias to the
-      :meth:`!warning` method.
-
    .. versionchanged:: 3.13
 
       The *merge_extra* argument was added.
@@ -1157,10 +1153,12 @@ functions.
 
 .. function:: getLogger(name=None)
 
-   Return a logger with the specified name or, if name is ``None``, return a
-   logger which is the root logger of the hierarchy. If specified, the name is
-   typically a dot-separated hierarchical name like *'a'*, *'a.b'* or *'a.b.c.d'*.
-   Choice of these names is entirely up to the developer who is using logging.
+   Return a logger with the specified name or, if name is ``None``, return the
+   root logger of the hierarchy. If specified, the name is typically a
+   dot-separated hierarchical name like *'a'*, *'a.b'* or *'a.b.c.d'*. Choice
+   of these names is entirely up to the developer who is using logging, though
+   it is recommended that ``__name__`` be used unless you have a specific
+   reason for not doing that, as mentioned in :ref:`logger`.
 
    All calls to this function with a given name return the same logger instance.
    This means that logger instances never need to be passed between different parts
@@ -1222,10 +1220,6 @@ functions.
       identical to ``warning``. As ``warn`` is deprecated, please do not use
       it - use ``warning`` instead.
 
-   .. versionchanged:: 3.13
-      Remove the undocumented ``warn()`` function which was an alias to the
-      :func:`warning` function.
-
 
 .. function:: error(msg, *args, **kwargs)
 
diff --git a/Doc/library/lzma.rst b/Doc/library/lzma.rst
index 74bf2670f9def6..69f7cb8d48d7ae 100644
--- a/Doc/library/lzma.rst
+++ b/Doc/library/lzma.rst
@@ -1,5 +1,5 @@
-:mod:`lzma` --- Compression using the LZMA algorithm
-====================================================
+:mod:`!lzma` --- Compression using the LZMA algorithm
+=====================================================
 
 .. module:: lzma
    :synopsis: A Python wrapper for the liblzma compression library.
diff --git a/Doc/library/mailbox.rst b/Doc/library/mailbox.rst
index a613548c9e518e..abb32f9bf3457f 100644
--- a/Doc/library/mailbox.rst
+++ b/Doc/library/mailbox.rst
@@ -1,5 +1,5 @@
-:mod:`mailbox` --- Manipulate mailboxes in various formats
-==========================================================
+:mod:`!mailbox` --- Manipulate mailboxes in various formats
+===========================================================
 
 .. module:: mailbox
    :synopsis: Manipulate mailboxes in various formats
@@ -1387,7 +1387,7 @@ When an :class:`!MHMessage` instance is created based upon a
 
    .. method:: get_visible()
 
-      Return an :class:`Message` instance whose headers are the message's
+      Return a :class:`Message` instance whose headers are the message's
       visible headers and whose body is empty.
 
 
diff --git a/Doc/library/mailcap.rst b/Doc/library/mailcap.rst
new file mode 100644
index 00000000000000..4467da146a5a05
--- /dev/null
+++ b/Doc/library/mailcap.rst
@@ -0,0 +1,15 @@
+:mod:`!mailcap` --- Mailcap file handling
+=========================================
+
+.. module:: mailcap
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!mailcap` module was
+`Python 3.12 <https://docs.python.org/3.12/library/mailcap.html>`_.
diff --git a/Doc/library/marshal.rst b/Doc/library/marshal.rst
index c6a006b7b4028a..9e4606df0f774e 100644
--- a/Doc/library/marshal.rst
+++ b/Doc/library/marshal.rst
@@ -1,5 +1,5 @@
-:mod:`marshal` --- Internal Python object serialization
-=======================================================
+:mod:`!marshal` --- Internal Python object serialization
+========================================================
 
 .. module:: marshal
    :synopsis: Convert Python objects to streams of bytes and back (with different
@@ -10,7 +10,7 @@
 This module contains functions that can read and write Python values in a binary
 format.  The format is specific to Python, but independent of machine
 architecture issues (e.g., you can write a Python value to a file on a PC,
-transport the file to a Sun, and read it back there).  Details of the format are
+transport the file to a Mac, and read it back there).  Details of the format are
 undocumented on purpose; it may change between Python versions (although it
 rarely does). [#]_
 
@@ -42,8 +42,8 @@ supports a substantially wider range of objects than marshal.
 
 Not all Python object types are supported; in general, only objects whose value
 is independent from a particular invocation of Python can be written and read by
-this module.  The following types are supported: booleans, integers, floating
-point numbers, complex numbers, strings, bytes, bytearrays, tuples, lists, sets,
+this module.  The following types are supported: booleans, integers, floating-point
+numbers, complex numbers, strings, bytes, bytearrays, tuples, lists, sets,
 frozensets, dictionaries, and code objects (if *allow_code* is true),
 where it should be understood that
 tuples, lists, sets, frozensets and dictionaries are only supported as long as
@@ -142,7 +142,7 @@ In addition, the following constants are defined:
 
    Indicates the format that the module uses. Version 0 is the historical
    format, version 1 shares interned strings and version 2 uses a binary format
-   for floating point numbers.
+   for floating-point numbers.
    Version 3 adds support for object instancing and recursion.
    The current version is 4.
 
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index ab9236cc7cfb81..25886da908f9a2 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -1,5 +1,5 @@
-:mod:`math` --- Mathematical functions
-======================================
+:mod:`!math` --- Mathematical functions
+=======================================
 
 .. module:: math
    :synopsis: Mathematical functions (sin() etc.).
@@ -26,15 +26,103 @@ The following functions are provided by this module.  Except when explicitly
 noted otherwise, all return values are floats.
 
 
-Number-theoretic and representation functions
----------------------------------------------
-
-.. function:: ceil(x)
-
-   Return the ceiling of *x*, the smallest integer greater than or equal to *x*.
-   If *x* is not a float, delegates to :meth:`x.__ceil__ <object.__ceil__>`,
-   which should return an :class:`~numbers.Integral` value.
-
+====================================================  ============================================
+**Number-theoretic functions**
+--------------------------------------------------------------------------------------------------
+:func:`comb(n, k) <comb>`                             Number of ways to choose *k* items from *n* items without repetition and without order
+:func:`factorial(n) <factorial>`                      *n* factorial
+:func:`gcd(*integers) <gcd>`                          Greatest common divisor of the integer arguments
+:func:`isqrt(n) <isqrt>`                              Integer square root of a nonnegative integer *n*
+:func:`lcm(*integers) <lcm>`                          Least common multiple of the integer arguments
+:func:`perm(n, k) <perm>`                             Number of ways to choose *k* items from *n* items without repetition and with order
+
+**Floating point arithmetic**
+--------------------------------------------------------------------------------------------------
+:func:`ceil(x) <ceil>`                                Ceiling of *x*, the smallest integer greater than or equal to *x*
+:func:`fabs(x) <fabs>`                                Absolute value of *x*
+:func:`floor(x)  <floor>`                             Floor of *x*, the largest integer less than or equal to *x*
+:func:`fma(x, y, z) <fma>`                            Fused multiply-add operation: ``(x * y) + z``
+:func:`fmod(x, y) <fmod>`                             Remainder of division ``x / y``
+:func:`modf(x) <modf>`                                Fractional and integer parts of *x*
+:func:`remainder(x, y) <remainder>`                   Remainder of *x* with respect to *y*
+:func:`trunc(x) <trunc>`                              Integer part of *x*
+
+**Floating point manipulation functions**
+--------------------------------------------------------------------------------------------------
+:func:`copysign(x, y) <copysign>`                     Magnitude (absolute value) of *x* with the sign of *y*
+:func:`frexp(x) <frexp>`                              Mantissa and exponent of *x*
+:func:`isclose(a, b, rel_tol, abs_tol) <isclose>`     Check if the values *a* and *b* are close to each other
+:func:`isfinite(x) <isfinite>`                        Check if *x* is neither an infinity nor a NaN
+:func:`isinf(x) <isinf>`                              Check if *x* is a positive or negative infinity
+:func:`isnan(x) <isnan>`                              Check if *x* is a NaN  (not a number)
+:func:`ldexp(x, i) <ldexp>`                           ``x * (2**i)``, inverse of function :func:`frexp`
+:func:`nextafter(x, y, steps) <nextafter>`            Floating-point value *steps* steps after *x* towards *y*
+:func:`ulp(x) <ulp>`                                  Value of the least significant bit of *x*
+
+**Power, exponential and logarithmic functions**
+--------------------------------------------------------------------------------------------------
+:func:`cbrt(x) <cbrt>`                                Cube root of *x*
+:func:`exp(x) <exp>`                                  *e* raised to the power *x*
+:func:`exp2(x) <exp2>`                                *2* raised to the power *x*
+:func:`expm1(x) <expm1>`                              *e* raised to the power *x*, minus 1
+:func:`log(x, base) <log>`                            Logarithm of *x* to the given base (*e* by default)
+:func:`log1p(x) <log1p>`                              Natural logarithm of *1+x* (base *e*)
+:func:`log2(x) <log2>`                                Base-2 logarithm of *x*
+:func:`log10(x) <log10>`                              Base-10 logarithm of *x*
+:func:`pow(x, y) <math.pow>`                          *x* raised to the power *y*
+:func:`sqrt(x) <sqrt>`                                Square root of *x*
+
+**Summation and product functions**
+--------------------------------------------------------------------------------------------------
+:func:`dist(p, q) <dist>`                             Euclidean distance between two points *p* and *q* given as an iterable of coordinates
+:func:`fsum(iterable) <fsum>`                         Sum of values in the input *iterable*
+:func:`hypot(*coordinates) <hypot>`                   Euclidean norm of an iterable of coordinates
+:func:`prod(iterable, start) <prod>`                  Product of elements in the input *iterable* with a *start* value
+:func:`sumprod(p, q) <sumprod>`                       Sum of products from two iterables *p* and *q*
+
+**Angular conversion**
+--------------------------------------------------------------------------------------------------
+:func:`degrees(x) <degrees>`                          Convert angle *x* from radians to degrees
+:func:`radians(x) <radians>`                          Convert angle *x* from degrees to radians
+
+**Trigonometric functions**
+--------------------------------------------------------------------------------------------------
+:func:`acos(x) <acos>`                                Arc cosine of *x*
+:func:`asin(x) <asin>`                                Arc sine of *x*
+:func:`atan(x) <atan>`                                Arc tangent of *x*
+:func:`atan2(y, x) <atan2>`                           ``atan(y / x)``
+:func:`cos(x) <cos>`                                  Cosine of *x*
+:func:`sin(x) <sin>`                                  Sine of *x*
+:func:`tan(x) <tan>`                                  Tangent of *x*
+
+**Hyperbolic functions**
+--------------------------------------------------------------------------------------------------
+:func:`acosh(x) <acosh>`                              Inverse hyperbolic cosine of *x*
+:func:`asinh(x) <asinh>`                              Inverse hyperbolic sine of *x*
+:func:`atanh(x) <atanh>`                              Inverse hyperbolic tangent of *x*
+:func:`cosh(x) <cosh>`                                Hyperbolic cosine of *x*
+:func:`sinh(x) <sinh>`                                Hyperbolic sine of *x*
+:func:`tanh(x) <tanh>`                                Hyperbolic tangent of *x*
+
+**Special functions**
+--------------------------------------------------------------------------------------------------
+:func:`erf(x) <erf>`                                  `Error function <https://en.wikipedia.org/wiki/Error_function>`_ at *x*
+:func:`erfc(x) <erfc>`                                `Complementary error function <https://en.wikipedia.org/wiki/Error_function>`_ at *x*
+:func:`gamma(x) <gamma>`                              `Gamma function <https://en.wikipedia.org/wiki/Gamma_function>`_ at *x*
+:func:`lgamma(x) <lgamma>`                            Natural logarithm of the absolute value of the `Gamma function <https://en.wikipedia.org/wiki/Gamma_function>`_ at *x*
+
+**Constants**
+--------------------------------------------------------------------------------------------------
+:data:`pi`                                            *π* = 3.141592...
+:data:`e`                                             *e* = 2.718281...
+:data:`tau`                                           *τ* = 2\ *π* = 6.283185...
+:data:`inf`                                           Positive infinity
+:data:`nan`                                           "Not a number" (NaN)
+====================================================  ============================================
+
+
+Number-theoretic functions
+--------------------------
 
 .. function:: comb(n, k)
 
@@ -54,25 +142,85 @@ Number-theoretic and representation functions
    .. versionadded:: 3.8
 
 
-.. function:: copysign(x, y)
+.. function:: factorial(n)
 
-   Return a float with the magnitude (absolute value) of *x* but the sign of
-   *y*.  On platforms that support signed zeros, ``copysign(1.0, -0.0)``
-   returns *-1.0*.
+   Return *n* factorial as an integer.  Raises :exc:`ValueError` if *n* is not integral or
+   is negative.
 
+   .. versionchanged:: 3.10
+      Floats with integral values (like ``5.0``) are no longer accepted.
 
-.. function:: fabs(x)
 
-   Return the absolute value of *x*.
+.. function:: gcd(*integers)
 
+   Return the greatest common divisor of the specified integer arguments.
+   If any of the arguments is nonzero, then the returned value is the largest
+   positive integer that is a divisor of all arguments.  If all arguments
+   are zero, then the returned value is ``0``.  ``gcd()`` without arguments
+   returns ``0``.
 
-.. function:: factorial(n)
+   .. versionadded:: 3.5
 
-   Return *n* factorial as an integer.  Raises :exc:`ValueError` if *n* is not integral or
-   is negative.
+   .. versionchanged:: 3.9
+      Added support for an arbitrary number of arguments. Formerly, only two
+      arguments were supported.
 
-   .. versionchanged:: 3.10
-      Floats with integral values (like ``5.0``) are no longer accepted.
+
+.. function:: isqrt(n)
+
+   Return the integer square root of the nonnegative integer *n*. This is the
+   floor of the exact square root of *n*, or equivalently the greatest integer
+   *a* such that *a*\ ² |nbsp| ≤ |nbsp| *n*.
+
+   For some applications, it may be more convenient to have the least integer
+   *a* such that *n* |nbsp| ≤ |nbsp| *a*\ ², or in other words the ceiling of
+   the exact square root of *n*. For positive *n*, this can be computed using
+   ``a = 1 + isqrt(n - 1)``.
+
+   .. versionadded:: 3.8
+
+
+.. function:: lcm(*integers)
+
+   Return the least common multiple of the specified integer arguments.
+   If all arguments are nonzero, then the returned value is the smallest
+   positive integer that is a multiple of all arguments.  If any of the arguments
+   is zero, then the returned value is ``0``.  ``lcm()`` without arguments
+   returns ``1``.
+
+   .. versionadded:: 3.9
+
+
+.. function:: perm(n, k=None)
+
+   Return the number of ways to choose *k* items from *n* items
+   without repetition and with order.
+
+   Evaluates to ``n! / (n - k)!`` when ``k <= n`` and evaluates
+   to zero when ``k > n``.
+
+   If *k* is not specified or is ``None``, then *k* defaults to *n*
+   and the function returns ``n!``.
+
+   Raises :exc:`TypeError` if either of the arguments are not integers.
+   Raises :exc:`ValueError` if either of the arguments are negative.
+
+   .. versionadded:: 3.8
+
+
+Floating point arithmetic
+-------------------------
+
+.. function:: ceil(x)
+
+   Return the ceiling of *x*, the smallest integer greater than or equal to *x*.
+   If *x* is not a float, delegates to :meth:`x.__ceil__ <object.__ceil__>`,
+   which should return an :class:`~numbers.Integral` value.
+
+
+.. function:: fabs(x)
+
+   Return the absolute value of *x*.
 
 
 .. function:: floor(x)
@@ -100,7 +248,8 @@ Number-theoretic and representation functions
 
 .. function:: fmod(x, y)
 
-   Return ``fmod(x, y)``, as defined by the platform C library. Note that the
+   Return the floating-point remainder of ``x / y``,
+   as defined by the platform C library function ``fmod(x, y)``. Note that the
    Python expression ``x % y`` may not return the same result.  The intent of the C
    standard is that ``fmod(x, y)`` be exactly (mathematically; to infinite
    precision) equal to ``x - n*y`` for some integer *n* such that the result has
@@ -113,64 +262,97 @@ Number-theoretic and representation functions
    floats, while Python's ``x % y`` is preferred when working with integers.
 
 
-.. function:: frexp(x)
+.. function:: modf(x)
 
-   Return the mantissa and exponent of *x* as the pair ``(m, e)``.  *m* is a float
-   and *e* is an integer such that ``x == m * 2**e`` exactly. If *x* is zero,
-   returns ``(0.0, 0)``, otherwise ``0.5 <= abs(m) < 1``.  This is used to "pick
-   apart" the internal representation of a float in a portable way.
+   Return the fractional and integer parts of *x*.  Both results carry the sign
+   of *x* and are floats.
 
+   Note that :func:`modf` has a different call/return pattern
+   than its C equivalents: it takes a single argument and return a pair of
+   values, rather than returning its second return value through an 'output
+   parameter' (there is no such thing in Python).
 
-.. function:: fsum(iterable)
 
-   Return an accurate floating point sum of values in the iterable.  Avoids
-   loss of precision by tracking multiple intermediate partial sums.
+.. function:: remainder(x, y)
 
-   The algorithm's accuracy depends on IEEE-754 arithmetic guarantees and the
-   typical case where the rounding mode is half-even.  On some non-Windows
-   builds, the underlying C library uses extended precision addition and may
-   occasionally double-round an intermediate sum causing it to be off in its
-   least significant bit.
+   Return the IEEE 754-style remainder of *x* with respect to *y*.  For
+   finite *x* and finite nonzero *y*, this is the difference ``x - n*y``,
+   where ``n`` is the closest integer to the exact value of the quotient ``x /
+   y``.  If ``x / y`` is exactly halfway between two consecutive integers, the
+   nearest *even* integer is used for ``n``.  The remainder ``r = remainder(x,
+   y)`` thus always satisfies ``abs(r) <= 0.5 * abs(y)``.
 
-   For further discussion and two alternative approaches, see the `ASPN cookbook
-   recipes for accurate floating point summation
-   <https://code.activestate.com/recipes/393090-binary-floating-point-summation-accurate-to-full-p/>`_\.
+   Special cases follow IEEE 754: in particular, ``remainder(x, math.inf)`` is
+   *x* for any finite *x*, and ``remainder(x, 0)`` and
+   ``remainder(math.inf, x)`` raise :exc:`ValueError` for any non-NaN *x*.
+   If the result of the remainder operation is zero, that zero will have
+   the same sign as *x*.
 
+   On platforms using IEEE 754 binary floating point, the result of this
+   operation is always exactly representable: no rounding error is introduced.
 
-.. function:: gcd(*integers)
+   .. versionadded:: 3.7
 
-   Return the greatest common divisor of the specified integer arguments.
-   If any of the arguments is nonzero, then the returned value is the largest
-   positive integer that is a divisor of all arguments.  If all arguments
-   are zero, then the returned value is ``0``.  ``gcd()`` without arguments
-   returns ``0``.
 
-   .. versionadded:: 3.5
+.. function:: trunc(x)
+
+   Return *x* with the fractional part
+   removed, leaving the integer part.  This rounds toward 0: ``trunc()`` is
+   equivalent to :func:`floor` for positive *x*, and equivalent to :func:`ceil`
+   for negative *x*. If *x* is not a float, delegates to :meth:`x.__trunc__
+   <object.__trunc__>`, which should return an :class:`~numbers.Integral` value.
 
-   .. versionchanged:: 3.9
-      Added support for an arbitrary number of arguments. Formerly, only two
-      arguments were supported.
+
+For the :func:`ceil`, :func:`floor`, and :func:`modf` functions, note that *all*
+floating-point numbers of sufficiently large magnitude are exact integers.
+Python floats typically carry no more than 53 bits of precision (the same as the
+platform C double type), in which case any float *x* with ``abs(x) >= 2**52``
+necessarily has no fractional bits.
 
 
+Floating point manipulation functions
+-------------------------------------
+
+.. function:: copysign(x, y)
+
+   Return a float with the magnitude (absolute value) of *x* but the sign of
+   *y*.  On platforms that support signed zeros, ``copysign(1.0, -0.0)``
+   returns *-1.0*.
+
+
+.. function:: frexp(x)
+
+   Return the mantissa and exponent of *x* as the pair ``(m, e)``.  *m* is a float
+   and *e* is an integer such that ``x == m * 2**e`` exactly. If *x* is zero,
+   returns ``(0.0, 0)``, otherwise ``0.5 <= abs(m) < 1``.  This is used to "pick
+   apart" the internal representation of a float in a portable way.
+
+   Note that :func:`frexp` has a different call/return pattern
+   than its C equivalents: it takes a single argument and return a pair of
+   values, rather than returning its second return value through an 'output
+   parameter' (there is no such thing in Python).
+
 .. function:: isclose(a, b, *, rel_tol=1e-09, abs_tol=0.0)
 
    Return ``True`` if the values *a* and *b* are close to each other and
    ``False`` otherwise.
 
    Whether or not two values are considered close is determined according to
-   given absolute and relative tolerances.
+   given absolute and relative tolerances.  If no errors occur, the result will
+   be: ``abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)``.
 
    *rel_tol* is the relative tolerance -- it is the maximum allowed difference
    between *a* and *b*, relative to the larger absolute value of *a* or *b*.
    For example, to set a tolerance of 5%, pass ``rel_tol=0.05``.  The default
    tolerance is ``1e-09``, which assures that the two values are the same
-   within about 9 decimal digits.  *rel_tol* must be greater than zero.
-
-   *abs_tol* is the minimum absolute tolerance -- useful for comparisons near
-   zero. *abs_tol* must be at least zero.
+   within about 9 decimal digits.  *rel_tol* must be nonnegative and less
+   than ``1.0``.
 
-   If no errors occur, the result will be:
-   ``abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)``.
+   *abs_tol* is the absolute tolerance; it defaults to ``0.0`` and it must be
+   nonnegative.  When comparing ``x`` to ``0.0``, ``isclose(x, 0)`` is computed
+   as ``abs(x) <= rel_tol  * abs(x)``, which is ``False`` for any ``x`` and
+   rel_tol less than ``1.0``.  So add an appropriate positive abs_tol argument
+   to the call.
 
    The IEEE 754 special values of ``NaN``, ``inf``, and ``-inf`` will be
    handled according to IEEE rules.  Specifically, ``NaN`` is not considered
@@ -203,43 +385,12 @@ Number-theoretic and representation functions
    Return ``True`` if *x* is a NaN (not a number), and ``False`` otherwise.
 
 
-.. function:: isqrt(n)
-
-   Return the integer square root of the nonnegative integer *n*. This is the
-   floor of the exact square root of *n*, or equivalently the greatest integer
-   *a* such that *a*\ ² |nbsp| ≤ |nbsp| *n*.
-
-   For some applications, it may be more convenient to have the least integer
-   *a* such that *n* |nbsp| ≤ |nbsp| *a*\ ², or in other words the ceiling of
-   the exact square root of *n*. For positive *n*, this can be computed using
-   ``a = 1 + isqrt(n - 1)``.
-
-   .. versionadded:: 3.8
-
-
-.. function:: lcm(*integers)
-
-   Return the least common multiple of the specified integer arguments.
-   If all arguments are nonzero, then the returned value is the smallest
-   positive integer that is a multiple of all arguments.  If any of the arguments
-   is zero, then the returned value is ``0``.  ``lcm()`` without arguments
-   returns ``1``.
-
-   .. versionadded:: 3.9
-
-
 .. function:: ldexp(x, i)
 
    Return ``x * (2**i)``.  This is essentially the inverse of function
    :func:`frexp`.
 
 
-.. function:: modf(x)
-
-   Return the fractional and integer parts of *x*.  Both results carry the sign
-   of *x* and are floats.
-
-
 .. function:: nextafter(x, y, steps=1)
 
    Return the floating-point value *steps* steps after *x* towards *y*.
@@ -260,79 +411,6 @@ Number-theoretic and representation functions
    .. versionchanged:: 3.12
       Added the *steps* argument.
 
-.. function:: perm(n, k=None)
-
-   Return the number of ways to choose *k* items from *n* items
-   without repetition and with order.
-
-   Evaluates to ``n! / (n - k)!`` when ``k <= n`` and evaluates
-   to zero when ``k > n``.
-
-   If *k* is not specified or is None, then *k* defaults to *n*
-   and the function returns ``n!``.
-
-   Raises :exc:`TypeError` if either of the arguments are not integers.
-   Raises :exc:`ValueError` if either of the arguments are negative.
-
-   .. versionadded:: 3.8
-
-
-.. function:: prod(iterable, *, start=1)
-
-   Calculate the product of all the elements in the input *iterable*.
-   The default *start* value for the product is ``1``.
-
-   When the iterable is empty, return the start value.  This function is
-   intended specifically for use with numeric values and may reject
-   non-numeric types.
-
-   .. versionadded:: 3.8
-
-
-.. function:: remainder(x, y)
-
-   Return the IEEE 754-style remainder of *x* with respect to *y*.  For
-   finite *x* and finite nonzero *y*, this is the difference ``x - n*y``,
-   where ``n`` is the closest integer to the exact value of the quotient ``x /
-   y``.  If ``x / y`` is exactly halfway between two consecutive integers, the
-   nearest *even* integer is used for ``n``.  The remainder ``r = remainder(x,
-   y)`` thus always satisfies ``abs(r) <= 0.5 * abs(y)``.
-
-   Special cases follow IEEE 754: in particular, ``remainder(x, math.inf)`` is
-   *x* for any finite *x*, and ``remainder(x, 0)`` and
-   ``remainder(math.inf, x)`` raise :exc:`ValueError` for any non-NaN *x*.
-   If the result of the remainder operation is zero, that zero will have
-   the same sign as *x*.
-
-   On platforms using IEEE 754 binary floating-point, the result of this
-   operation is always exactly representable: no rounding error is introduced.
-
-   .. versionadded:: 3.7
-
-
-.. function:: sumprod(p, q)
-
-   Return the sum of products of values from two iterables *p* and *q*.
-
-   Raises :exc:`ValueError` if the inputs do not have the same length.
-
-   Roughly equivalent to::
-
-       sum(itertools.starmap(operator.mul, zip(p, q, strict=True)))
-
-   For float and mixed int/float inputs, the intermediate products
-   and sums are computed with extended precision.
-
-   .. versionadded:: 3.12
-
-
-.. function:: trunc(x)
-
-   Return *x* with the fractional part
-   removed, leaving the integer part.  This rounds toward 0: ``trunc()`` is
-   equivalent to :func:`floor` for positive *x*, and equivalent to :func:`ceil`
-   for negative *x*. If *x* is not a float, delegates to :meth:`x.__trunc__
-   <object.__trunc__>`, which should return an :class:`~numbers.Integral` value.
 
 .. function:: ulp(x)
 
@@ -359,20 +437,8 @@ Number-theoretic and representation functions
    .. versionadded:: 3.9
 
 
-Note that :func:`frexp` and :func:`modf` have a different call/return pattern
-than their C equivalents: they take a single argument and return a pair of
-values, rather than returning their second return value through an 'output
-parameter' (there is no such thing in Python).
-
-For the :func:`ceil`, :func:`floor`, and :func:`modf` functions, note that *all*
-floating-point numbers of sufficiently large magnitude are exact integers.
-Python floats typically carry no more than 53 bits of precision (the same as the
-platform C double type), in which case any float *x* with ``abs(x) >= 2**52``
-necessarily has no fractional bits.
-
-
-Power and logarithmic functions
--------------------------------
+Power, exponential and logarithmic functions
+--------------------------------------------
 
 .. function:: cbrt(x)
 
@@ -447,11 +513,11 @@ Power and logarithmic functions
 
 .. function:: pow(x, y)
 
-   Return ``x`` raised to the power ``y``.  Exceptional cases follow
+   Return *x* raised to the power *y*.  Exceptional cases follow
    the IEEE 754 standard as far as possible.  In particular,
    ``pow(1.0, x)`` and ``pow(x, 0.0)`` always return ``1.0``, even
-   when ``x`` is a zero or a NaN.  If both ``x`` and ``y`` are finite,
-   ``x`` is negative, and ``y`` is not an integer then ``pow(x, y)``
+   when *x* is a zero or a NaN.  If both *x* and *y* are finite,
+   *x* is negative, and *y* is not an integer then ``pow(x, y)``
    is undefined, and raises :exc:`ValueError`.
 
    Unlike the built-in ``**`` operator, :func:`math.pow` converts both
@@ -469,41 +535,8 @@ Power and logarithmic functions
    Return the square root of *x*.
 
 
-Trigonometric functions
------------------------
-
-.. function:: acos(x)
-
-   Return the arc cosine of *x*, in radians. The result is between ``0`` and
-   ``pi``.
-
-
-.. function:: asin(x)
-
-   Return the arc sine of *x*, in radians. The result is between ``-pi/2`` and
-   ``pi/2``.
-
-
-.. function:: atan(x)
-
-   Return the arc tangent of *x*, in radians. The result is between ``-pi/2`` and
-   ``pi/2``.
-
-
-.. function:: atan2(y, x)
-
-   Return ``atan(y / x)``, in radians. The result is between ``-pi`` and ``pi``.
-   The vector in the plane from the origin to point ``(x, y)`` makes this angle
-   with the positive X axis. The point of :func:`atan2` is that the signs of both
-   inputs are known to it, so it can compute the correct quadrant for the angle.
-   For example, ``atan(1)`` and ``atan2(1, 1)`` are both ``pi/4``, but ``atan2(-1,
-   -1)`` is ``-3*pi/4``.
-
-
-.. function:: cos(x)
-
-   Return the cosine of *x* radians.
-
+Summation and product functions
+-------------------------------
 
 .. function:: dist(p, q)
 
@@ -518,6 +551,22 @@ Trigonometric functions
    .. versionadded:: 3.8
 
 
+.. function:: fsum(iterable)
+
+   Return an accurate floating-point sum of values in the iterable.  Avoids
+   loss of precision by tracking multiple intermediate partial sums.
+
+   The algorithm's accuracy depends on IEEE-754 arithmetic guarantees and the
+   typical case where the rounding mode is half-even.  On some non-Windows
+   builds, the underlying C library uses extended precision addition and may
+   occasionally double-round an intermediate sum causing it to be off in its
+   least significant bit.
+
+   For further discussion and two alternative approaches, see the `ASPN cookbook
+   recipes for accurate floating-point summation
+   <https://code.activestate.com/recipes/393090-binary-floating-point-summation-accurate-to-full-p/>`_\.
+
+
 .. function:: hypot(*coordinates)
 
    Return the Euclidean norm, ``sqrt(sum(x**2 for x in coordinates))``.
@@ -538,14 +587,32 @@ Trigonometric functions
       is almost always correctly rounded to within 1/2 ulp.
 
 
-.. function:: sin(x)
+.. function:: prod(iterable, *, start=1)
 
-   Return the sine of *x* radians.
+   Calculate the product of all the elements in the input *iterable*.
+   The default *start* value for the product is ``1``.
 
+   When the iterable is empty, return the start value.  This function is
+   intended specifically for use with numeric values and may reject
+   non-numeric types.
 
-.. function:: tan(x)
+   .. versionadded:: 3.8
 
-   Return the tangent of *x* radians.
+
+.. function:: sumprod(p, q)
+
+   Return the sum of products of values from two iterables *p* and *q*.
+
+   Raises :exc:`ValueError` if the inputs do not have the same length.
+
+   Roughly equivalent to::
+
+      sum(itertools.starmap(operator.mul, zip(p, q, strict=True)))
+
+   For float and mixed int/float inputs, the intermediate products
+   and sums are computed with extended precision.
+
+   .. versionadded:: 3.12
 
 
 Angular conversion
@@ -561,6 +628,52 @@ Angular conversion
    Convert angle *x* from degrees to radians.
 
 
+Trigonometric functions
+-----------------------
+
+.. function:: acos(x)
+
+   Return the arc cosine of *x*, in radians. The result is between ``0`` and
+   ``pi``.
+
+
+.. function:: asin(x)
+
+   Return the arc sine of *x*, in radians. The result is between ``-pi/2`` and
+   ``pi/2``.
+
+
+.. function:: atan(x)
+
+   Return the arc tangent of *x*, in radians. The result is between ``-pi/2`` and
+   ``pi/2``.
+
+
+.. function:: atan2(y, x)
+
+   Return ``atan(y / x)``, in radians. The result is between ``-pi`` and ``pi``.
+   The vector in the plane from the origin to point ``(x, y)`` makes this angle
+   with the positive X axis. The point of :func:`atan2` is that the signs of both
+   inputs are known to it, so it can compute the correct quadrant for the angle.
+   For example, ``atan(1)`` and ``atan2(1, 1)`` are both ``pi/4``, but ``atan2(-1,
+   -1)`` is ``-3*pi/4``.
+
+
+.. function:: cos(x)
+
+   Return the cosine of *x* radians.
+
+
+.. function:: sin(x)
+
+   Return the sine of *x* radians.
+
+
+.. function:: tan(x)
+
+   Return the tangent of *x* radians.
+
+
 Hyperbolic functions
 --------------------
 
diff --git a/Doc/library/mimetypes.rst b/Doc/library/mimetypes.rst
index a24eab21d57343..8ad4850584a7e1 100644
--- a/Doc/library/mimetypes.rst
+++ b/Doc/library/mimetypes.rst
@@ -1,5 +1,5 @@
-:mod:`mimetypes` --- Map filenames to MIME types
-================================================
+:mod:`!mimetypes` --- Map filenames to MIME types
+=================================================
 
 .. module:: mimetypes
    :synopsis: Mapping of filename extensions to MIME types.
@@ -295,3 +295,13 @@ than one MIME-type database; it provides an interface similar to the one of the
       types, else to the list of non-standard types.
 
       .. versionadded:: 3.2
+
+
+   .. method:: MimeTypes.add_type(type, ext, strict=True)
+
+      Add a mapping from the MIME type *type* to the extension *ext*. When the
+      extension is already known, the new type will replace the old one. When the type
+      is already known the extension will be added to the list of known extensions.
+
+      When *strict* is ``True`` (the default), the mapping will be added to the
+      official MIME types, otherwise to the non-standard ones.
diff --git a/Doc/library/mmap.rst b/Doc/library/mmap.rst
index 758721433f77de..4e20c07331a220 100644
--- a/Doc/library/mmap.rst
+++ b/Doc/library/mmap.rst
@@ -1,5 +1,5 @@
-:mod:`mmap` --- Memory-mapped file support
-==========================================
+:mod:`!mmap` --- Memory-mapped file support
+===========================================
 
 .. module:: mmap
    :synopsis: Interface to memory-mapped files for Unix and Windows.
diff --git a/Doc/library/modulefinder.rst b/Doc/library/modulefinder.rst
index 526f0ff868c2b7..823d853f1ed8eb 100644
--- a/Doc/library/modulefinder.rst
+++ b/Doc/library/modulefinder.rst
@@ -1,5 +1,5 @@
-:mod:`modulefinder` --- Find modules used by a script
-=====================================================
+:mod:`!modulefinder` --- Find modules used by a script
+======================================================
 
 .. module:: modulefinder
    :synopsis: Find modules used by a script.
diff --git a/Doc/library/msilib.rst b/Doc/library/msilib.rst
new file mode 100644
index 00000000000000..eb1ac551ded456
--- /dev/null
+++ b/Doc/library/msilib.rst
@@ -0,0 +1,15 @@
+:mod:`!msilib` --- Read and write Microsoft Installer files
+===========================================================
+
+.. module:: msilib
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!msilib` module was
+`Python 3.12 <https://docs.python.org/3.12/library/msilib.html>`_.
diff --git a/Doc/library/msvcrt.rst b/Doc/library/msvcrt.rst
index 72da777cd1407e..327cc3602b1a77 100644
--- a/Doc/library/msvcrt.rst
+++ b/Doc/library/msvcrt.rst
@@ -1,5 +1,5 @@
-:mod:`msvcrt` --- Useful routines from the MS VC++ runtime
-==========================================================
+:mod:`!msvcrt` --- Useful routines from the MS VC++ runtime
+===========================================================
 
 .. module:: msvcrt
    :platform: Windows
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index afc148c78e97bd..38104bb7c5f4d4 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -1,5 +1,5 @@
-:mod:`multiprocessing` --- Process-based parallelism
-====================================================
+:mod:`!multiprocessing` --- Process-based parallelism
+=====================================================
 
 .. module:: multiprocessing
    :synopsis: Process-based parallelism.
@@ -8,7 +8,7 @@
 
 --------------
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 Introduction
 ------------
@@ -254,6 +254,7 @@ processes:
           p.join()
 
    Queues are thread and process safe.
+   Any object put into a :mod:`~multiprocessing` queue will be serialized.
 
 **Pipes**
 
@@ -281,6 +282,8 @@ processes:
    of corruption from processes using different ends of the pipe at the same
    time.
 
+   The :meth:`~Connection.send` method serializes the object and
+   :meth:`~Connection.recv` re-creates the object.
 
 Synchronization between processes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -502,7 +505,7 @@ The :mod:`multiprocessing` package mostly replicates the API of the
    The constructor should always be called with keyword arguments. *group*
    should always be ``None``; it exists solely for compatibility with
    :class:`threading.Thread`.  *target* is the callable object to be invoked by
-   the :meth:`run()` method.  It defaults to ``None``, meaning nothing is
+   the :meth:`run` method.  It defaults to ``None``, meaning nothing is
    called. *name* is the process name (see :attr:`name` for more details).
    *args* is the argument tuple for the target invocation.  *kwargs* is a
    dictionary of keyword arguments for the target invocation.  If provided,
@@ -639,7 +642,7 @@ The :mod:`multiprocessing` package mostly replicates the API of the
 
       You can use this value if you want to wait on several events at
       once using :func:`multiprocessing.connection.wait`.  Otherwise
-      calling :meth:`join()` is simpler.
+      calling :meth:`join` is simpler.
 
       On Windows, this is an OS handle usable with the ``WaitForSingleObject``
       and ``WaitForMultipleObjects`` family of API calls.  On POSIX, this is
@@ -666,7 +669,7 @@ The :mod:`multiprocessing` package mostly replicates the API of the
 
    .. method:: kill()
 
-      Same as :meth:`terminate()` but using the ``SIGKILL`` signal on POSIX.
+      Same as :meth:`terminate` but using the ``SIGKILL`` signal on POSIX.
 
       .. versionadded:: 3.7
 
@@ -709,7 +712,7 @@ The :mod:`multiprocessing` package mostly replicates the API of the
 
 .. exception:: BufferTooShort
 
-   Exception raised by :meth:`Connection.recv_bytes_into()` when the supplied
+   Exception raised by :meth:`Connection.recv_bytes_into` when the supplied
    buffer object is too small for the message read.
 
    If ``e`` is an instance of :exc:`BufferTooShort` then ``e.args[0]`` will give
@@ -745,6 +748,11 @@ If you use :class:`JoinableQueue` then you **must** call
 semaphore used to count the number of unfinished tasks may eventually overflow,
 raising an exception.
 
+One difference from other Python queue implementations, is that :mod:`multiprocessing`
+queues serializes all objects that are put into them using :mod:`pickle`.
+The object return by the get method is a re-created object that does not share memory
+with the original object.
+
 Note that one can also create a shared queue by using a manager object -- see
 :ref:`multiprocessing-managers`.
 
@@ -811,6 +819,8 @@ For an example of the usage of queues for interprocess communication see
    used for receiving messages and ``conn2`` can only be used for sending
    messages.
 
+   The :meth:`~multiprocessing.Connection.send` method serializes the object using
+   :mod:`pickle` and the :meth:`~multiprocessing.Connection.recv` re-creates the object.
 
 .. class:: Queue([maxsize])
 
@@ -837,6 +847,8 @@ For an example of the usage of queues for interprocess communication see
       Return ``True`` if the queue is empty, ``False`` otherwise.  Because of
       multithreading/multiprocessing semantics, this is not reliable.
 
+      May raise an :exc:`OSError` on closed queues. (not guaranteed)
+
    .. method:: full()
 
       Return ``True`` if the queue is full, ``False`` otherwise.  Because of
@@ -940,6 +952,8 @@ For an example of the usage of queues for interprocess communication see
 
       Return ``True`` if the queue is empty, ``False`` otherwise.
 
+      Always raises an :exc:`OSError` if the SimpleQueue is closed.
+
    .. method:: get()
 
       Remove and return an item from the queue.
@@ -1459,17 +1473,6 @@ object -- see :ref:`multiprocessing-managers`.
    On macOS, ``sem_timedwait`` is unsupported, so calling ``acquire()`` with
    a timeout will emulate that function's behavior using a sleeping loop.
 
-.. note::
-
-   If the SIGINT signal generated by :kbd:`Ctrl-C` arrives while the main thread is
-   blocked by a call to :meth:`BoundedSemaphore.acquire`, :meth:`Lock.acquire`,
-   :meth:`RLock.acquire`, :meth:`Semaphore.acquire`, :meth:`Condition.acquire`
-   or :meth:`Condition.wait` then the call will be immediately interrupted and
-   :exc:`KeyboardInterrupt` will be raised.
-
-   This differs from the behaviour of :mod:`threading` where SIGINT will be
-   ignored while the equivalent blocking calls are in progress.
-
 .. note::
 
    Some of this package's functionality requires a functioning shared semaphore
@@ -2483,9 +2486,9 @@ multiple connections at the same time.
    generally be omitted since it can usually be inferred from the format of
    *address*. (See :ref:`multiprocessing-address-formats`)
 
-   If *authkey* is given and not None, it should be a byte string and will be
+   If *authkey* is given and not ``None``, it should be a byte string and will be
    used as the secret key for an HMAC-based authentication challenge. No
-   authentication is done if *authkey* is None.
+   authentication is done if *authkey* is ``None``.
    :exc:`~multiprocessing.AuthenticationError` is raised if authentication fails.
    See :ref:`multiprocessing-auth-keys`.
 
@@ -2518,9 +2521,9 @@ multiple connections at the same time.
    to the :meth:`~socket.socket.listen` method of the socket once it has been
    bound.
 
-   If *authkey* is given and not None, it should be a byte string and will be
+   If *authkey* is given and not ``None``, it should be a byte string and will be
    used as the secret key for an HMAC-based authentication challenge. No
-   authentication is done if *authkey* is None.
+   authentication is done if *authkey* is ``None``.
    :exc:`~multiprocessing.AuthenticationError` is raised if authentication fails.
    See :ref:`multiprocessing-auth-keys`.
 
@@ -2958,7 +2961,7 @@ Beware of replacing :data:`sys.stdin` with a "file like object"
     resulting in a bad file descriptor error, but introduces a potential danger
     to applications which replace :func:`sys.stdin` with a "file-like object"
     with output buffering.  This danger is that if multiple processes call
-    :meth:`~io.IOBase.close()` on this file-like object, it could result in the same
+    :meth:`~io.IOBase.close` on this file-like object, it could result in the same
     data being flushed to the object multiple times, resulting in corruption.
 
     If you write a file-like object and implement your own caching, you can
diff --git a/Doc/library/multiprocessing.shared_memory.rst b/Doc/library/multiprocessing.shared_memory.rst
index 933fd07d62418a..e8f04a6ac7b95d 100644
--- a/Doc/library/multiprocessing.shared_memory.rst
+++ b/Doc/library/multiprocessing.shared_memory.rst
@@ -1,5 +1,5 @@
-:mod:`multiprocessing.shared_memory` --- Shared memory for direct access across processes
-=========================================================================================
+:mod:`!multiprocessing.shared_memory` --- Shared memory for direct access across processes
+==========================================================================================
 
 .. module:: multiprocessing.shared_memory
    :synopsis: Provides shared memory for direct access across processes.
diff --git a/Doc/library/netrc.rst b/Doc/library/netrc.rst
index c36e5cfecfc6a8..f6260383b2b057 100644
--- a/Doc/library/netrc.rst
+++ b/Doc/library/netrc.rst
@@ -1,6 +1,5 @@
-
-:mod:`netrc` --- netrc file processing
-======================================
+:mod:`!netrc` --- netrc file processing
+=======================================
 
 .. module:: netrc
    :synopsis: Loading of .netrc files.
diff --git a/Doc/library/nis.rst b/Doc/library/nis.rst
new file mode 100644
index 00000000000000..dcc36dd43fc313
--- /dev/null
+++ b/Doc/library/nis.rst
@@ -0,0 +1,15 @@
+:mod:`!nis` --- Interface to Sun’s NIS (Yellow Pages)
+=====================================================
+
+.. module:: nis
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!nis` module was
+`Python 3.12 <https://docs.python.org/3.12/library/nis.html>`_.
diff --git a/Doc/library/nntplib.rst b/Doc/library/nntplib.rst
new file mode 100644
index 00000000000000..8053fe8cb8b9e1
--- /dev/null
+++ b/Doc/library/nntplib.rst
@@ -0,0 +1,15 @@
+:mod:`!nntplib` --- NNTP protocol client
+========================================
+
+.. module:: nntplib
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!nntplib` module was
+`Python 3.12 <https://docs.python.org/3.12/library/nntplib.html>`_.
diff --git a/Doc/library/numbers.rst b/Doc/library/numbers.rst
index 306bdd94aaca13..d0ae79c7a3df76 100644
--- a/Doc/library/numbers.rst
+++ b/Doc/library/numbers.rst
@@ -1,5 +1,5 @@
-:mod:`numbers` --- Numeric abstract base classes
-================================================
+:mod:`!numbers` --- Numeric abstract base classes
+=================================================
 
 .. module:: numbers
    :synopsis: Numeric abstract base classes (Complex, Real, Integral, etc.).
@@ -84,10 +84,10 @@ The numeric tower
    ``~``.
 
 
-Notes for type implementors
+Notes for type implementers
 ---------------------------
 
-Implementors should be careful to make equal numbers equal and hash
+Implementers should be careful to make equal numbers equal and hash
 them to the same values. This may be subtle if there are two different
 extensions of the real numbers. For example, :class:`fractions.Fraction`
 implements :func:`hash` as follows::
diff --git a/Doc/library/operator.rst b/Doc/library/operator.rst
index 96f2c287875d41..a9a6026af406fe 100644
--- a/Doc/library/operator.rst
+++ b/Doc/library/operator.rst
@@ -1,5 +1,5 @@
-:mod:`operator` --- Standard operators as functions
-===================================================
+:mod:`!operator` --- Standard operators as functions
+====================================================
 
 .. module:: operator
    :synopsis: Functions corresponding to the standard operators.
diff --git a/Doc/library/optparse.rst b/Doc/library/optparse.rst
index 015e83ed2ce5f7..ff327cf9162a8c 100644
--- a/Doc/library/optparse.rst
+++ b/Doc/library/optparse.rst
@@ -1,27 +1,137 @@
-:mod:`optparse` --- Parser for command line options
-===================================================
+:mod:`!optparse` --- Parser for command line options
+====================================================
 
 .. module:: optparse
    :synopsis: Command-line option parsing library.
-   :deprecated:
 
 .. moduleauthor:: Greg Ward <gward@python.net>
 .. sectionauthor:: Greg Ward <gward@python.net>
 
 **Source code:** :source:`Lib/optparse.py`
 
-.. deprecated:: 3.2
-   The :mod:`optparse` module is :term:`soft deprecated` and will not be
-   developed further; development will continue with the :mod:`argparse`
-   module.
-
 --------------
 
+.. _choosing-an-argument-parser:
+
+Choosing an argument parsing library
+------------------------------------
+
+The standard library includes three argument parsing libraries:
+
+* :mod:`getopt`: a module that closely mirrors the procedural C ``getopt`` API.
+  Included in the standard library since before the initial Python 1.0 release.
+* :mod:`optparse`: a declarative replacement for ``getopt`` that
+  provides equivalent functionality without requiring each application
+  to implement its own procedural option parsing logic. Included
+  in the standard library since the Python 2.3 release.
+* :mod:`argparse`: a more opinionated alternative to ``optparse`` that
+  provides more functionality by default, at the expense of reduced application
+  flexibility in controlling exactly how arguments are processed. Included in
+  the standard library since the Python 2.7 and Python 3.2 releases.
+
+In the absence of more specific argument parsing design constraints, :mod:`argparse`
+is the recommended choice for implementing command line applications, as it offers
+the highest level of baseline functionality with the least application level code.
+
+:mod:`getopt` is retained almost entirely for backwards compatibility reasons.
+However, it also serves a niche use case as a tool for prototyping and testing
+command line argument handling in ``getopt``-based C applications.
+
+:mod:`optparse` should be considered as an alternative to :mod:`argparse` in the
+following cases:
+
+* an application is already using :mod:`optparse` and doesn't want to risk the
+  subtle behavioural changes that may arise when migrating to :mod:`argparse`
+* the application requires additional control over the way options and
+  positional parameters are interleaved on the command line (including
+  the ability to disable the interleaving feature completely)
+* the application requires additional control over the incremental parsing
+  of command line elements (while ``argparse`` does support this, the
+  exact way it works in practice is undesirable for some use cases)
+* the application requires additional control over the handling of options
+  which accept parameter values that may start with ``-`` (such as delegated
+  options to be passed to invoked subprocesses)
+* the application requires some other command line parameter processing
+  behavior which ``argparse`` does not support, but which can be implemented
+  in terms of the lower level interface offered by ``optparse``
+
+These considerations also mean that :mod:`optparse` is likely to provide a
+better foundation for library authors writing third party command line
+argument processing libraries.
+
+As a concrete example, consider the following two command line argument
+parsing configurations, the first using ``optparse``, and the second
+using ``argparse``:
+
+.. testcode::
+
+   import optparse
+
+   if __name__ == '__main__':
+       parser = optparse.OptionParser()
+       parser.add_option('-o', '--output')
+       parser.add_option('-v', dest='verbose', action='store_true')
+       opts, args = parser.parse_args()
+       process(args, output=opts.output, verbose=opts.verbose)
+
+.. testcode::
+
+   import argparse
+
+   if __name__ == '__main__':
+       parser = argparse.ArgumentParser()
+       parser.add_argument('-o', '--output')
+       parser.add_argument('-v', dest='verbose', action='store_true')
+       parser.add_argument('rest', nargs='*')
+       args = parser.parse_args()
+       process(args.rest, output=args.output, verbose=args.verbose)
+
+The most obvious difference is that in the ``optparse`` version, the non-option
+arguments are processed separately by the application after the option processing
+is complete. In the ``argparse`` version, positional arguments are declared and
+processed in the same way as the named options.
+
+However, the ``argparse`` version will also handle some parameter combination
+differently from the way the ``optparse`` version would handle them.
+For example (amongst other differences):
+
+* supplying ``-o -v`` gives ``output="-v"`` and ``verbose=False``
+  when using ``optparse``, but a usage error with ``argparse``
+  (complaining that no value has been supplied for ``-o/--output``,
+  since ``-v`` is interpreted as meaning the verbosity flag)
+* similarly, supplying ``-o --`` gives ``output="--"`` and ``args=()``
+  when using ``optparse``, but a usage error with ``argparse``
+  (also complaining that no value has been supplied for ``-o/--output``,
+  since ``--`` is interpreted as terminating the option processing
+  and treating all remaining values as positional arguments)
+* supplying ``-o=foo`` gives ``output="=foo"`` when using ``optparse``,
+  but gives ``output="foo"`` with ``argparse`` (since ``=`` is special
+  cased as an alternative separator for option parameter values)
+
+Whether these differing behaviors in the ``argparse`` version are
+considered desirable or a problem will depend on the specific command line
+application use case.
+
+.. seealso::
+
+    :pypi:`click` is a third party argument processing library (originally
+    based on ``optparse``), which allows command line applications to be
+    developed as a set of decorated command implementation functions.
+
+    Other third party libraries, such as :pypi:`typer` or :pypi:`msgspec-click`,
+    allow command line interfaces to be specified in ways that more effectively
+    integrate with static checking of Python type annotations.
+
+
+Introduction
+------------
+
 :mod:`optparse` is a more convenient, flexible, and powerful library for parsing
-command-line options than the old :mod:`getopt` module.  :mod:`optparse` uses a
-more declarative style of command-line parsing: you create an instance of
-:class:`OptionParser`, populate it with options, and parse the command
-line. :mod:`optparse` allows users to specify options in the conventional
+command-line options than the minimalist :mod:`getopt` module.
+:mod:`optparse` uses a more declarative style of command-line parsing:
+you create an instance of :class:`OptionParser`,
+populate it with options, and parse the command line.
+:mod:`optparse` allows users to specify options in the conventional
 GNU/POSIX syntax, and additionally generates usage and help messages for you.
 
 Here's an example of using :mod:`optparse` in a simple script::
@@ -82,10 +192,11 @@ Background
 ----------
 
 :mod:`optparse` was explicitly designed to encourage the creation of programs
-with straightforward, conventional command-line interfaces.  To that end, it
-supports only the most common command-line syntax and semantics conventionally
-used under Unix.  If you are unfamiliar with these conventions, read this
-section to acquaint yourself with them.
+with straightforward command-line interfaces that follow the conventions
+established by the :c:func:`!getopt` family of functions available to C developers.
+To that end, it supports only the most common command-line syntax and semantics
+conventionally used under Unix.  If you are unfamiliar with these conventions,
+reading this section will allow you to acquaint yourself with them.
 
 
 .. _optparse-terminology:
@@ -1352,7 +1463,7 @@ The whole point of creating and populating an OptionParser is to call its
       the list of arguments to process (default: ``sys.argv[1:]``)
 
    ``values``
-      an :class:`Values` object to store option arguments in (default: a
+      a :class:`Values` object to store option arguments in (default: a
       new instance of :class:`Values`) -- if you give an existing object, the
       option defaults will not be initialized on it
 
@@ -1739,7 +1850,7 @@ seen, but blow up if it comes after ``-b`` in the command-line.  ::
 Callback example 3: check option order (generalized)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-If you want to re-use this callback for several similar options (set a flag, but
+If you want to reuse this callback for several similar options (set a flag, but
 blow up if ``-b`` has already been seen), it needs a bit of work: the error
 message and the flag that it sets must be generalized.  ::
 
diff --git a/Doc/library/os.path.rst b/Doc/library/os.path.rst
index 24d423eb5fbfed..ecbbc1d7605f9f 100644
--- a/Doc/library/os.path.rst
+++ b/Doc/library/os.path.rst
@@ -1,5 +1,5 @@
-:mod:`os.path` --- Common pathname manipulations
-================================================
+:mod:`!os.path` --- Common pathname manipulations
+=================================================
 
 .. module:: os.path
    :synopsis: Operations on pathnames.
@@ -81,7 +81,7 @@ the :mod:`glob` module.)
 
    Return the longest common sub-path of each pathname in the iterable
    *paths*.  Raise :exc:`ValueError` if *paths* contain both absolute
-   and relative pathnames, the *paths* are on the different drives or
+   and relative pathnames, if *paths* are on different drives, or
    if *paths* is empty.  Unlike :func:`commonprefix`, this returns a
    valid path.
 
@@ -201,14 +201,14 @@ the :mod:`glob` module.)
 
 .. function:: getatime(path)
 
-   Return the time of last access of *path*.  The return value is a floating point number giving
+   Return the time of last access of *path*.  The return value is a floating-point number giving
    the number of seconds since the epoch (see the  :mod:`time` module).  Raise
    :exc:`OSError` if the file does not exist or is inaccessible.
 
 
 .. function:: getmtime(path)
 
-   Return the time of last modification of *path*.  The return value is a floating point number
+   Return the time of last modification of *path*.  The return value is a floating-point number
    giving the number of seconds since the epoch (see the  :mod:`time` module).
    Raise :exc:`OSError` if the file does not exist or is inaccessible.
 
@@ -389,7 +389,7 @@ the :mod:`glob` module.)
    that contains symbolic links.  On Windows, it converts forward slashes to
    backward slashes. To normalize case, use :func:`normcase`.
 
-  .. note::
+   .. note::
       On POSIX systems, in accordance with `IEEE Std 1003.1 2013 Edition; 4.13
       Pathname Resolution <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>`_,
       if a pathname begins with exactly two slashes, the first component
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 6c92eed9c063f1..bc9efd8e6ca450 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1,5 +1,5 @@
-:mod:`os` --- Miscellaneous operating system interfaces
-=======================================================
+:mod:`!os` --- Miscellaneous operating system interfaces
+========================================================
 
 .. module:: os
    :synopsis: Miscellaneous operating system interfaces.
@@ -34,8 +34,8 @@ Notes on the availability of these functions:
 
 * On VxWorks, os.popen, os.fork, os.execv and os.spawn*p* are not supported.
 
-* On WebAssembly platforms, and on iOS, large parts of the :mod:`os` module are
-  not available or behave differently. API related to processes (e.g.
+* On WebAssembly platforms, Android and iOS, large parts of the :mod:`os` module are
+  not available or behave differently. APIs related to processes (e.g.
   :func:`~os.fork`, :func:`~os.execve`) and resources (e.g. :func:`~os.nice`)
   are not available. Others like :func:`~os.getuid` and :func:`~os.getpid` are
   emulated or stubs. WebAssembly platforms also lack support for signals (e.g.
@@ -113,8 +113,8 @@ of the UTF-8 encoding:
 
 * Use UTF-8 as the :term:`filesystem encoding <filesystem encoding and error
   handler>`.
-* :func:`sys.getfilesystemencoding()` returns ``'utf-8'``.
-* :func:`locale.getpreferredencoding()` returns ``'utf-8'`` (the *do_setlocale*
+* :func:`sys.getfilesystemencoding` returns ``'utf-8'``.
+* :func:`locale.getpreferredencoding` returns ``'utf-8'`` (the *do_setlocale*
   argument has no effect).
 * :data:`sys.stdin`, :data:`sys.stdout`, and :data:`sys.stderr` all use
   UTF-8 as their text encoding, with the ``surrogateescape``
@@ -133,8 +133,8 @@ level APIs also exhibit different default behaviours:
 
 * Command line arguments, environment variables and filenames are decoded
   to text using the UTF-8 encoding.
-* :func:`os.fsdecode()` and :func:`os.fsencode()` use the UTF-8 encoding.
-* :func:`open()`, :func:`io.open()`, and :func:`codecs.open()` use the UTF-8
+* :func:`os.fsdecode` and :func:`os.fsencode` use the UTF-8 encoding.
+* :func:`open`, :func:`io.open`, and :func:`codecs.open` use the UTF-8
   encoding by default. However, they still use the strict error handler by
   default so that attempting to open a binary file in text mode is likely
   to raise an exception rather than producing nonsense data.
@@ -542,7 +542,7 @@ process and user.
    the groups of which the specified username is a member, plus the specified
    group id.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
    .. versionadded:: 3.2
 
@@ -576,21 +576,21 @@ process and user.
 
    Set the current process's effective group id.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. function:: seteuid(euid, /)
 
    Set the current process's effective user id.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. function:: setgid(gid, /)
 
    Set the current process' group id.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. function:: setgroups(groups, /)
@@ -684,14 +684,14 @@ process and user.
 
    Set the current process's real and effective group ids.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. function:: setresgid(rgid, egid, sgid, /)
 
    Set the current process's real, effective, and saved group ids.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
    .. versionadded:: 3.2
 
@@ -700,7 +700,7 @@ process and user.
 
    Set the current process's real, effective, and saved user ids.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
    .. versionadded:: 3.2
 
@@ -709,7 +709,7 @@ process and user.
 
    Set the current process's real and effective user ids.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. function:: getsid(pid, /)
@@ -732,7 +732,7 @@ process and user.
 
    Set the current process's user id.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
 
 .. placed in this section since it relates to errno.... a little weak
@@ -785,7 +785,7 @@ process and user.
    ``socket.gethostbyaddr(socket.gethostname())``.
 
    On macOS, iOS and Android, this returns the *kernel* name and version (i.e.,
-   ``'Darwin'`` on macOS and iOS; ``'Linux'`` on Android). :func:`platform.uname()`
+   ``'Darwin'`` on macOS and iOS; ``'Linux'`` on Android). :func:`platform.uname`
    can be used to get the user-facing operating system name and version on iOS and
    Android.
 
@@ -923,7 +923,7 @@ as internal buffering of data.
 
    Copy *count* bytes from file descriptor *src*, starting from offset
    *offset_src*, to file descriptor *dst*, starting from offset *offset_dst*.
-   If *offset_src* is None, then *src* is read from the current position;
+   If *offset_src* is ``None``, then *src* is read from the current position;
    respectively for *offset_dst*.
 
    In Linux kernel older than 5.3, the files pointed to by *src* and *dst*
@@ -1551,7 +1551,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
 
 .. function:: pwritev(fd, buffers, offset, flags=0, /)
 
-   Write the *buffers* contents to file descriptor *fd* at a offset *offset*,
+   Write the *buffers* contents to file descriptor *fd* at an offset *offset*,
    leaving the file offset unchanged.  *buffers* must be a sequence of
    :term:`bytes-like objects <bytes-like object>`. Buffers are processed in
    array order. Entire contents of the first buffer is written before
@@ -1718,7 +1718,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
    Transfer *count* bytes from file descriptor *src*, starting from offset
    *offset_src*, to file descriptor *dst*, starting from offset *offset_dst*.
    At least one of the file descriptors must refer to a pipe. If *offset_src*
-   is None, then *src* is read from the current position; respectively for
+   is ``None``, then *src* is read from the current position; respectively for
    *offset_dst*. The offset associated to the file descriptor that refers to a
    pipe must be ``None``. The files pointed to by *src* and *dst* must reside in
    the same filesystem, otherwise an :exc:`OSError` is raised with
@@ -2178,7 +2178,7 @@ features:
 
    Change the root directory of the current process to *path*.
 
-   .. availability:: Unix, not WASI.
+   .. availability:: Unix, not WASI, not Android.
 
    .. versionchanged:: 3.6
       Accepts a :term:`path-like object`.
@@ -2830,7 +2830,7 @@ features:
 
    .. versionchanged:: 3.6
       Added support for the :term:`context manager` protocol and the
-      :func:`~scandir.close()` method.  If a :func:`scandir` iterator is neither
+      :func:`~scandir.close` method.  If a :func:`scandir` iterator is neither
       exhausted nor explicitly closed a :exc:`ResourceWarning` will be emitted
       in its destructor.
 
@@ -3645,6 +3645,7 @@ features:
               os.remove(os.path.join(root, name))
           for name in dirs:
               os.rmdir(os.path.join(root, name))
+      os.rmdir(top)
 
    .. audit-event:: os.walk top,topdown,onerror,followlinks os.walk
 
@@ -3775,7 +3776,7 @@ features:
    new file descriptor is :ref:`non-inheritable <fd_inheritance>`.
 
    *initval* is the initial value of the event counter. The initial value
-   must be an 32 bit unsigned integer. Please note that the initial value is
+   must be a 32 bit unsigned integer. Please note that the initial value is
    limited to a 32 bit unsigned int although the event counter is an unsigned
    64 bit integer with a maximum value of 2\ :sup:`64`\ -\ 2.
 
@@ -3854,7 +3855,7 @@ features:
 
 .. data:: EFD_SEMAPHORE
 
-   Provide semaphore-like semantics for reads from a :func:`eventfd` file
+   Provide semaphore-like semantics for reads from an :func:`eventfd` file
    descriptor. On read the internal counter is decremented by one.
 
    .. availability:: Linux >= 2.6.30
@@ -3862,6 +3863,8 @@ features:
    .. versionadded:: 3.10
 
 
+.. _os-timerfd:
+
 Timer File Descriptors
 ~~~~~~~~~~~~~~~~~~~~~~
 
@@ -4282,7 +4285,7 @@ to be ignored.
 
    .. audit-event:: os.exec path,args,env os.execl
 
-   .. availability:: Unix, Windows, not WASI, not iOS.
+   .. availability:: Unix, Windows, not WASI, not Android, not iOS.
 
    .. versionchanged:: 3.3
       Added support for specifying *path* as an open file descriptor
@@ -4485,7 +4488,7 @@ written in Python, such as a mail server's external command delivery program.
       for technical details of why we're surfacing this longstanding
       platform compatibility problem to developers.
 
-   .. availability:: POSIX, not WASI, not iOS.
+   .. availability:: POSIX, not WASI, not Android, not iOS.
 
 
 .. function:: forkpty()
@@ -4512,7 +4515,7 @@ written in Python, such as a mail server's external command delivery program.
       threads, this now raises a :exc:`DeprecationWarning`. See the
       longer explanation on :func:`os.fork`.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: kill(pid, sig, /)
@@ -4529,8 +4532,7 @@ written in Python, such as a mail server's external command delivery program.
    only be sent to console processes which share a common console window,
    e.g., some subprocesses. Any other value for *sig* will cause the process
    to be unconditionally killed by the TerminateProcess API, and the exit code
-   will be set to *sig*. The Windows version of :func:`kill` additionally takes
-   process handles to be killed.
+   will be set to *sig*.
 
    See also :func:`signal.pthread_kill`.
 
@@ -4570,7 +4572,7 @@ written in Python, such as a mail server's external command delivery program.
 
    See the :manpage:`pidfd_open(2)` man page for more details.
 
-   .. availability:: Linux >= 5.3
+   .. availability:: Linux >= 5.3, Android >= :func:`build-time <sys.getandroidapilevel>` API level 31
    .. versionadded:: 3.9
 
    .. data:: PIDFD_NONBLOCK
@@ -4621,7 +4623,7 @@ written in Python, such as a mail server's external command delivery program.
    documentation for more powerful ways to manage and communicate with
    subprocesses.
 
-   .. availability:: not WASI, not iOS.
+   .. availability:: not WASI, not Android, not iOS.
 
    .. note::
       The :ref:`Python UTF-8 Mode <utf8-mode>` affects encodings used
@@ -4729,7 +4731,7 @@ written in Python, such as a mail server's external command delivery program.
       ``os.POSIX_SPAWN_CLOSEFROM`` is available on platforms where
       :c:func:`!posix_spawn_file_actions_addclosefrom_np` exists.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 .. function:: posix_spawnp(path, argv, env, *, file_actions=None, \
                           setpgroup=None, resetids=False, setsid=False, setsigmask=(), \
@@ -4745,7 +4747,7 @@ written in Python, such as a mail server's external command delivery program.
 
    .. versionadded:: 3.8
 
-   .. availability:: POSIX, not WASI, not iOS.
+   .. availability:: POSIX, not WASI, not Android, not iOS.
 
       See :func:`posix_spawn` documentation.
 
@@ -4778,7 +4780,7 @@ written in Python, such as a mail server's external command delivery program.
 
    There is no way to unregister a function.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.7
 
@@ -4847,7 +4849,7 @@ written in Python, such as a mail server's external command delivery program.
 
    .. audit-event:: os.spawn mode,path,args,env os.spawnl
 
-   .. availability:: Unix, Windows, not WASI, not iOS.
+   .. availability:: Unix, Windows, not WASI, not Android, not iOS.
 
       :func:`spawnlp`, :func:`spawnlpe`, :func:`spawnvp`
       and :func:`spawnvpe` are not available on Windows.  :func:`spawnle` and
@@ -4971,7 +4973,7 @@ written in Python, such as a mail server's external command delivery program.
 
    .. audit-event:: os.system command os.system
 
-   .. availability:: Unix, Windows, not WASI, not iOS.
+   .. availability:: Unix, Windows, not WASI, not Android, not iOS.
 
 
 .. function:: times()
@@ -5015,7 +5017,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitstatus_to_exitcode` can be used to convert the exit status into an
    exit code.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. seealso::
 
@@ -5049,7 +5051,7 @@ written in Python, such as a mail server's external command delivery program.
    Otherwise, if there are no matching children
    that could be waited for, :exc:`ChildProcessError` is raised.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.3
 
@@ -5090,7 +5092,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitstatus_to_exitcode` can be used to convert the exit status into an
    exit code.
 
-   .. availability:: Unix, Windows, not WASI, not iOS.
+   .. availability:: Unix, Windows, not WASI, not Android, not iOS.
 
    .. versionchanged:: 3.5
       If the system call is interrupted and the signal handler does not raise an
@@ -5110,7 +5112,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitstatus_to_exitcode` can be used to convert the exit status into an
    exitcode.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: wait4(pid, options)
@@ -5124,7 +5126,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitstatus_to_exitcode` can be used to convert the exit status into an
    exitcode.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. data:: P_PID
@@ -5141,7 +5143,7 @@ written in Python, such as a mail server's external command delivery program.
    * :data:`!P_PIDFD` - wait for the child identified by the file descriptor
      *id* (a process file descriptor created with :func:`pidfd_open`).
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. note:: :data:`!P_PIDFD` is only available on Linux >= 5.4.
 
@@ -5156,7 +5158,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitid` causes child processes to be reported if they have been
    continued from a job control stop since they were last reported.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. data:: WEXITED
@@ -5167,7 +5169,7 @@ written in Python, such as a mail server's external command delivery program.
    The other ``wait*`` functions always report children that have terminated,
    so this option is not available for them.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.3
 
@@ -5179,7 +5181,7 @@ written in Python, such as a mail server's external command delivery program.
 
    This option is not available for the other ``wait*`` functions.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.3
 
@@ -5192,7 +5194,7 @@ written in Python, such as a mail server's external command delivery program.
 
    This option is not available for :func:`waitid`.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. data:: WNOHANG
@@ -5201,7 +5203,7 @@ written in Python, such as a mail server's external command delivery program.
    :func:`waitid` to return right away if no child process status is available
    immediately.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. data:: WNOWAIT
@@ -5211,7 +5213,7 @@ written in Python, such as a mail server's external command delivery program.
 
    This option is not available for the other ``wait*`` functions.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. data:: CLD_EXITED
@@ -5224,7 +5226,7 @@ written in Python, such as a mail server's external command delivery program.
    These are the possible values for :attr:`!si_code` in the result returned by
    :func:`waitid`.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.3
 
@@ -5259,7 +5261,7 @@ written in Python, such as a mail server's external command delivery program.
       :func:`WIFEXITED`, :func:`WEXITSTATUS`, :func:`WIFSIGNALED`,
       :func:`WTERMSIG`, :func:`WIFSTOPPED`, :func:`WSTOPSIG` functions.
 
-   .. availability:: Unix, Windows, not WASI, not iOS.
+   .. availability:: Unix, Windows, not WASI, not Android, not iOS.
 
    .. versionadded:: 3.9
 
@@ -5275,7 +5277,7 @@ used to determine the disposition of a process.
 
    This function should be employed only if :func:`WIFSIGNALED` is true.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WIFCONTINUED(status)
@@ -5286,7 +5288,7 @@ used to determine the disposition of a process.
 
    See :data:`WCONTINUED` option.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WIFSTOPPED(status)
@@ -5298,14 +5300,14 @@ used to determine the disposition of a process.
    done using :data:`WUNTRACED` option or when the process is being traced (see
    :manpage:`ptrace(2)`).
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 .. function:: WIFSIGNALED(status)
 
    Return ``True`` if the process was terminated by a signal, otherwise return
    ``False``.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WIFEXITED(status)
@@ -5314,7 +5316,7 @@ used to determine the disposition of a process.
    by calling ``exit()`` or ``_exit()``, or by returning from ``main()``;
    otherwise return ``False``.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WEXITSTATUS(status)
@@ -5323,7 +5325,7 @@ used to determine the disposition of a process.
 
    This function should be employed only if :func:`WIFEXITED` is true.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WSTOPSIG(status)
@@ -5332,7 +5334,7 @@ used to determine the disposition of a process.
 
    This function should be employed only if :func:`WIFSTOPPED` is true.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 .. function:: WTERMSIG(status)
@@ -5341,7 +5343,7 @@ used to determine the disposition of a process.
 
    This function should be employed only if :func:`WIFSIGNALED` is true.
 
-   .. availability:: Unix, not WASI, not iOS.
+   .. availability:: Unix, not WASI, not Android, not iOS.
 
 
 Interface to the scheduler
@@ -5356,6 +5358,8 @@ information, consult your Unix manpages.
 The following scheduling policies are exposed if they are supported by the
 operating system.
 
+.. _os-scheduling-policy:
+
 .. data:: SCHED_OTHER
 
    The default scheduling policy.
@@ -5447,7 +5451,7 @@ operating system.
 
 .. function:: sched_yield()
 
-   Voluntarily relinquish the CPU.
+   Voluntarily relinquish the CPU. See :manpage:`sched_yield(2)` for details.
 
 
 .. function:: sched_setaffinity(pid, mask, /)
@@ -5539,7 +5543,7 @@ Miscellaneous System Information
    If :option:`-X cpu_count <-X>` is given or :envvar:`PYTHON_CPU_COUNT` is set,
    :func:`process_cpu_count` returns the overridden value *n*.
 
-   See also the :func:`sched_getaffinity` functions.
+   See also the :func:`sched_getaffinity` function.
 
    .. versionadded:: 3.13
 
diff --git a/Doc/library/ossaudiodev.rst b/Doc/library/ossaudiodev.rst
new file mode 100644
index 00000000000000..320adbeff82539
--- /dev/null
+++ b/Doc/library/ossaudiodev.rst
@@ -0,0 +1,15 @@
+:mod:`!ossaudiodev` --- Access to OSS-compatible audio devices
+==============================================================
+
+.. module:: ossaudiodev
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!ossaudiodev` module was
+`Python 3.12 <https://docs.python.org/3.12/library/ossaudiodev.html>`_.
diff --git a/Doc/library/pathlib.rst b/Doc/library/pathlib.rst
index 2e18e41869376e..ee8a9086d5eaa1 100644
--- a/Doc/library/pathlib.rst
+++ b/Doc/library/pathlib.rst
@@ -1,6 +1,5 @@
-
-:mod:`pathlib` --- Object-oriented filesystem paths
-===================================================
+:mod:`!pathlib` --- Object-oriented filesystem paths
+====================================================
 
 .. module:: pathlib
    :synopsis: Object-oriented filesystem paths
@@ -22,6 +21,12 @@ inherit from pure paths but also provide I/O operations.
 .. image:: pathlib-inheritance.png
    :align: center
    :class: invert-in-dark-mode
+   :alt: Inheritance diagram showing the classes available in pathlib. The
+         most basic class is PurePath, which has three direct subclasses:
+         PurePosixPath, PureWindowsPath, and Path. Further to these four
+         classes, there are two classes that use multiple inheritance:
+         PosixPath subclasses PurePosixPath and Path, and WindowsPath
+         subclasses PureWindowsPath and Path.
 
 If you've never used this module before or just aren't sure which class is
 right for your task, :class:`Path` is most likely what you need. It instantiates
@@ -173,8 +178,8 @@ we also call *flavours*:
    A subclass of :class:`PurePath`, this path flavour represents non-Windows
    filesystem paths::
 
-      >>> PurePosixPath('/etc')
-      PurePosixPath('/etc')
+      >>> PurePosixPath('/etc/hosts')
+      PurePosixPath('/etc/hosts')
 
    *pathsegments* is specified similarly to :class:`PurePath`.
 
@@ -183,8 +188,8 @@ we also call *flavours*:
    A subclass of :class:`PurePath`, this path flavour represents Windows
    filesystem paths, including `UNC paths`_::
 
-      >>> PureWindowsPath('c:/Program Files/')
-      PureWindowsPath('c:/Program Files')
+      >>> PureWindowsPath('c:/', 'Users', 'Ximénez')
+      PureWindowsPath('c:/Users/Ximénez')
       >>> PureWindowsPath('//server/share/file')
       PureWindowsPath('//server/share/file')
 
@@ -628,8 +633,8 @@ Pure paths provide the following methods and properties:
           raise ValueError(error_message.format(str(self), str(formatted)))
       ValueError: '/etc/passwd' is not in the subpath of '/usr' OR one path is relative and the other is absolute.
 
-   When *walk_up* is False (the default), the path must start with *other*.
-   When the argument is True, ``..`` entries may be added to form the
+   When *walk_up* is false (the default), the path must start with *other*.
+   When the argument is true, ``..`` entries may be added to form the
    relative path. In all other cases, such as the paths referencing
    different drives, :exc:`ValueError` is raised.::
 
@@ -765,8 +770,8 @@ calls on path objects.  There are three ways to instantiate concrete paths:
    A subclass of :class:`Path` and :class:`PurePosixPath`, this class
    represents concrete non-Windows filesystem paths::
 
-      >>> PosixPath('/etc')
-      PosixPath('/etc')
+      >>> PosixPath('/etc/hosts')
+      PosixPath('/etc/hosts')
 
    *pathsegments* is specified similarly to :class:`PurePath`.
 
@@ -780,8 +785,8 @@ calls on path objects.  There are three ways to instantiate concrete paths:
    A subclass of :class:`Path` and :class:`PureWindowsPath`, this class
    represents concrete Windows filesystem paths::
 
-      >>> WindowsPath('c:/Program Files/')
-      WindowsPath('c:/Program Files')
+      >>> WindowsPath('c:/', 'Users', 'Ximénez')
+      WindowsPath('c:/Users/Ximénez')
 
    *pathsegments* is specified similarly to :class:`PurePath`.
 
@@ -808,9 +813,12 @@ bugs or failures in your application)::
        % (cls.__name__,))
    UnsupportedOperation: cannot instantiate 'WindowsPath' on your system
 
+Some concrete path methods can raise an :exc:`OSError` if a system call fails
+(for example because the path doesn't exist).
 
-File URIs
-^^^^^^^^^
+
+Parsing and generating URIs
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Concrete path objects can be created from, and represented as, 'file' URIs
 conforming to :rfc:`8089`.
@@ -870,21 +878,36 @@ conforming to :rfc:`8089`.
    it strictly impure.
 
 
-Methods
-^^^^^^^
+Expanding and resolving paths
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Concrete paths provide the following methods in addition to pure paths
-methods.  Many of these methods can raise an :exc:`OSError` if a system
-call fails (for example because the path doesn't exist).
+.. classmethod:: Path.home()
 
-.. versionchanged:: 3.8
+   Return a new path object representing the user's home directory (as
+   returned by :func:`os.path.expanduser` with ``~`` construct). If the home
+   directory can't be resolved, :exc:`RuntimeError` is raised.
 
-   :meth:`~Path.exists()`, :meth:`~Path.is_dir()`, :meth:`~Path.is_file()`,
-   :meth:`~Path.is_mount()`, :meth:`~Path.is_symlink()`,
-   :meth:`~Path.is_block_device()`, :meth:`~Path.is_char_device()`,
-   :meth:`~Path.is_fifo()`, :meth:`~Path.is_socket()` now return ``False``
-   instead of raising an exception for paths that contain characters
-   unrepresentable at the OS level.
+   ::
+
+      >>> Path.home()
+      PosixPath('/home/antoine')
+
+   .. versionadded:: 3.5
+
+
+.. method:: Path.expanduser()
+
+   Return a new path with expanded ``~`` and ``~user`` constructs,
+   as returned by :meth:`os.path.expanduser`. If a home directory can't be
+   resolved, :exc:`RuntimeError` is raised.
+
+   ::
+
+      >>> p = PosixPath('~/films/Monty Python')
+      >>> p.expanduser()
+      PosixPath('/home/eric/films/Monty Python')
+
+   .. versionadded:: 3.5
 
 
 .. classmethod:: Path.cwd()
@@ -896,23 +919,82 @@ call fails (for example because the path doesn't exist).
       PosixPath('/home/antoine/pathlib')
 
 
-.. classmethod:: Path.home()
+.. method:: Path.absolute()
 
-   Return a new path object representing the user's home directory (as
-   returned by :func:`os.path.expanduser` with ``~`` construct). If the home
-   directory can't be resolved, :exc:`RuntimeError` is raised.
+   Make the path absolute, without normalization or resolving symlinks.
+   Returns a new path object::
 
-   ::
+      >>> p = Path('tests')
+      >>> p
+      PosixPath('tests')
+      >>> p.absolute()
+      PosixPath('/home/antoine/pathlib/tests')
 
-      >>> Path.home()
-      PosixPath('/home/antoine')
 
-   .. versionadded:: 3.5
+.. method:: Path.resolve(strict=False)
+
+   Make the path absolute, resolving any symlinks.  A new path object is
+   returned::
+
+      >>> p = Path()
+      >>> p
+      PosixPath('.')
+      >>> p.resolve()
+      PosixPath('/home/antoine/pathlib')
+
+   "``..``" components are also eliminated (this is the only method to do so)::
+
+      >>> p = Path('docs/../setup.py')
+      >>> p.resolve()
+      PosixPath('/home/antoine/pathlib/setup.py')
+
+   If a path doesn't exist or a symlink loop is encountered, and *strict* is
+   ``True``, :exc:`OSError` is raised.  If *strict* is ``False``, the path is
+   resolved as far as possible and any remainder is appended without checking
+   whether it exists.
+
+   .. versionchanged:: 3.6
+      The *strict* parameter was added (pre-3.6 behavior is strict).
+
+   .. versionchanged:: 3.13
+      Symlink loops are treated like other errors: :exc:`OSError` is raised in
+      strict mode, and no exception is raised in non-strict mode. In previous
+      versions, :exc:`RuntimeError` is raised no matter the value of *strict*.
+
+
+.. method:: Path.readlink()
+
+   Return the path to which the symbolic link points (as returned by
+   :func:`os.readlink`)::
+
+      >>> p = Path('mylink')
+      >>> p.symlink_to('setup.py')
+      >>> p.readlink()
+      PosixPath('setup.py')
+
+   .. versionadded:: 3.9
+
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if :func:`os.readlink` is not
+      available. In previous versions, :exc:`NotImplementedError` was raised.
+
+
+Querying file type and status
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. versionchanged:: 3.8
+
+   :meth:`~Path.exists`, :meth:`~Path.is_dir`, :meth:`~Path.is_file`,
+   :meth:`~Path.is_mount`, :meth:`~Path.is_symlink`,
+   :meth:`~Path.is_block_device`, :meth:`~Path.is_char_device`,
+   :meth:`~Path.is_fifo`, :meth:`~Path.is_socket` now return ``False``
+   instead of raising an exception for paths that contain characters
+   unrepresentable at the OS level.
 
 
 .. method:: Path.stat(*, follow_symlinks=True)
 
-   Return a :class:`os.stat_result` object containing information about this path, like :func:`os.stat`.
+   Return an :class:`os.stat_result` object containing information about this path, like :func:`os.stat`.
    The result is looked up at each call to this method.
 
    This method normally follows symlinks; to stat a symlink add the argument
@@ -929,25 +1011,12 @@ call fails (for example because the path doesn't exist).
    .. versionchanged:: 3.10
       The *follow_symlinks* parameter was added.
 
-.. method:: Path.chmod(mode, *, follow_symlinks=True)
-
-   Change the file mode and permissions, like :func:`os.chmod`.
-
-   This method normally follows symlinks. Some Unix flavours support changing
-   permissions on the symlink itself; on these platforms you may add the
-   argument ``follow_symlinks=False``, or use :meth:`~Path.lchmod`.
 
-   ::
+.. method:: Path.lstat()
 
-      >>> p = Path('setup.py')
-      >>> p.stat().st_mode
-      33277
-      >>> p.chmod(0o444)
-      >>> p.stat().st_mode
-      33060
+   Like :meth:`Path.stat` but, if the path points to a symbolic link, return
+   the symbolic link's information rather than its target's.
 
-   .. versionchanged:: 3.10
-      The *follow_symlinks* parameter was added.
 
 .. method:: Path.exists(*, follow_symlinks=True)
 
@@ -970,97 +1039,17 @@ call fails (for example because the path doesn't exist).
    .. versionchanged:: 3.12
       The *follow_symlinks* parameter was added.
 
-.. method:: Path.expanduser()
-
-   Return a new path with expanded ``~`` and ``~user`` constructs,
-   as returned by :meth:`os.path.expanduser`. If a home directory can't be
-   resolved, :exc:`RuntimeError` is raised.
-
-   ::
-
-      >>> p = PosixPath('~/films/Monty Python')
-      >>> p.expanduser()
-      PosixPath('/home/eric/films/Monty Python')
-
-   .. versionadded:: 3.5
-
-
-.. method:: Path.glob(pattern, *, case_sensitive=None, recurse_symlinks=False)
-
-   Glob the given relative *pattern* in the directory represented by this path,
-   yielding all matching files (of any kind)::
-
-      >>> sorted(Path('.').glob('*.py'))
-      [PosixPath('pathlib.py'), PosixPath('setup.py'), PosixPath('test_pathlib.py')]
-      >>> sorted(Path('.').glob('*/*.py'))
-      [PosixPath('docs/conf.py')]
-      >>> sorted(Path('.').glob('**/*.py'))
-      [PosixPath('build/lib/pathlib.py'),
-       PosixPath('docs/conf.py'),
-       PosixPath('pathlib.py'),
-       PosixPath('setup.py'),
-       PosixPath('test_pathlib.py')]
-
-   .. seealso::
-      :ref:`pathlib-pattern-language` documentation.
-
-   By default, or when the *case_sensitive* keyword-only argument is set to
-   ``None``, this method matches paths using platform-specific casing rules:
-   typically, case-sensitive on POSIX, and case-insensitive on Windows.
-   Set *case_sensitive* to ``True`` or ``False`` to override this behaviour.
-
-   By default, or when the *recurse_symlinks* keyword-only argument is set to
-   ``False``, this method follows symlinks except when expanding "``**``"
-   wildcards. Set *recurse_symlinks* to ``True`` to always follow symlinks.
-
-   .. audit-event:: pathlib.Path.glob self,pattern pathlib.Path.glob
-
-   .. versionchanged:: 3.12
-      The *case_sensitive* parameter was added.
-
-   .. versionchanged:: 3.13
-      The *recurse_symlinks* parameter was added.
-
-   .. versionchanged:: 3.13
-      The *pattern* parameter accepts a :term:`path-like object`.
-
-   .. versionchanged:: 3.13
-      Any :exc:`OSError` exceptions raised from scanning the filesystem are
-      suppressed. In previous versions, such exceptions are suppressed in many
-      cases, but not all.
-
-
-.. method:: Path.rglob(pattern, *, case_sensitive=None, recurse_symlinks=False)
-
-   Glob the given relative *pattern* recursively.  This is like calling
-   :func:`Path.glob` with "``**/``" added in front of the *pattern*.
-
-   .. seealso::
-      :ref:`pathlib-pattern-language` and :meth:`Path.glob` documentation.
-
-   .. audit-event:: pathlib.Path.rglob self,pattern pathlib.Path.rglob
-
-   .. versionchanged:: 3.12
-      The *case_sensitive* parameter was added.
-
-   .. versionchanged:: 3.13
-      The *recurse_symlinks* parameter was added.
-
-   .. versionchanged:: 3.13
-      The *pattern* parameter accepts a :term:`path-like object`.
-
 
-.. method:: Path.group(*, follow_symlinks=True)
+.. method:: Path.is_file(*, follow_symlinks=True)
 
-   Return the name of the group owning the file. :exc:`KeyError` is raised
-   if the file's gid isn't found in the system database.
+   Return ``True`` if the path points to a regular file, ``False`` if it
+   points to another kind of file.
 
-   This method normally follows symlinks; to get the group of the symlink, add
-   the argument ``follow_symlinks=False``.
+   ``False`` is also returned if the path doesn't exist or is a broken symlink;
+   other errors (such as permission errors) are propagated.
 
-   .. versionchanged:: 3.13
-      Raises :exc:`UnsupportedOperation` if the :mod:`grp` module is not
-      available. In previous versions, :exc:`NotImplementedError` was raised.
+   This method normally follows symlinks; to exclude symlinks, add the
+   argument ``follow_symlinks=False``.
 
    .. versionchanged:: 3.13
       The *follow_symlinks* parameter was added.
@@ -1081,19 +1070,12 @@ call fails (for example because the path doesn't exist).
       The *follow_symlinks* parameter was added.
 
 
-.. method:: Path.is_file(*, follow_symlinks=True)
-
-   Return ``True`` if the path points to a regular file, ``False`` if it
-   points to another kind of file.
-
-   ``False`` is also returned if the path doesn't exist or is a broken symlink;
-   other errors (such as permission errors) are propagated.
+.. method:: Path.is_symlink()
 
-   This method normally follows symlinks; to exclude symlinks, add the
-   argument ``follow_symlinks=False``.
+   Return ``True`` if the path points to a symbolic link, ``False`` otherwise.
 
-   .. versionchanged:: 3.13
-      The *follow_symlinks* parameter was added.
+   ``False`` is also returned if the path doesn't exist; other errors (such
+   as permission errors) are propagated.
 
 
 .. method:: Path.is_junction()
@@ -1121,14 +1103,6 @@ call fails (for example because the path doesn't exist).
       Windows support was added.
 
 
-.. method:: Path.is_symlink()
-
-   Return ``True`` if the path points to a symbolic link, ``False`` otherwise.
-
-   ``False`` is also returned if the path doesn't exist; other errors (such
-   as permission errors) are propagated.
-
-
 .. method:: Path.is_socket()
 
    Return ``True`` if the path points to a Unix socket (or a symbolic link
@@ -1165,26 +1139,202 @@ call fails (for example because the path doesn't exist).
    other errors (such as permission errors) are propagated.
 
 
-.. method:: Path.iterdir()
+.. method:: Path.samefile(other_path)
 
-   When the path points to a directory, yield path objects of the directory
-   contents::
+   Return whether this path points to the same file as *other_path*, which
+   can be either a Path object, or a string.  The semantics are similar
+   to :func:`os.path.samefile` and :func:`os.path.samestat`.
 
-      >>> p = Path('docs')
-      >>> for child in p.iterdir(): child
-      ...
-      PosixPath('docs/conf.py')
-      PosixPath('docs/_templates')
-      PosixPath('docs/make.bat')
-      PosixPath('docs/index.rst')
-      PosixPath('docs/_build')
-      PosixPath('docs/_static')
-      PosixPath('docs/Makefile')
+   An :exc:`OSError` can be raised if either file cannot be accessed for some
+   reason.
+
+   ::
+
+      >>> p = Path('spam')
+      >>> q = Path('eggs')
+      >>> p.samefile(q)
+      False
+      >>> p.samefile('spam')
+      True
+
+   .. versionadded:: 3.5
+
+
+Reading and writing files
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+
+.. method:: Path.open(mode='r', buffering=-1, encoding=None, errors=None, newline=None)
+
+   Open the file pointed to by the path, like the built-in :func:`open`
+   function does::
+
+      >>> p = Path('setup.py')
+      >>> with p.open() as f:
+      ...     f.readline()
+      ...
+      '#!/usr/bin/env python3\n'
+
+
+.. method:: Path.read_text(encoding=None, errors=None, newline=None)
+
+   Return the decoded contents of the pointed-to file as a string::
+
+      >>> p = Path('my_text_file')
+      >>> p.write_text('Text file contents')
+      18
+      >>> p.read_text()
+      'Text file contents'
+
+   The file is opened and then closed. The optional parameters have the same
+   meaning as in :func:`open`.
+
+   .. versionadded:: 3.5
+
+   .. versionchanged:: 3.13
+      The *newline* parameter was added.
+
+
+.. method:: Path.read_bytes()
+
+   Return the binary contents of the pointed-to file as a bytes object::
+
+      >>> p = Path('my_binary_file')
+      >>> p.write_bytes(b'Binary file contents')
+      20
+      >>> p.read_bytes()
+      b'Binary file contents'
+
+   .. versionadded:: 3.5
+
+
+.. method:: Path.write_text(data, encoding=None, errors=None, newline=None)
+
+   Open the file pointed to in text mode, write *data* to it, and close the
+   file::
+
+      >>> p = Path('my_text_file')
+      >>> p.write_text('Text file contents')
+      18
+      >>> p.read_text()
+      'Text file contents'
+
+   An existing file of the same name is overwritten. The optional parameters
+   have the same meaning as in :func:`open`.
+
+   .. versionadded:: 3.5
+
+   .. versionchanged:: 3.10
+      The *newline* parameter was added.
+
+
+.. method:: Path.write_bytes(data)
+
+   Open the file pointed to in bytes mode, write *data* to it, and close the
+   file::
+
+      >>> p = Path('my_binary_file')
+      >>> p.write_bytes(b'Binary file contents')
+      20
+      >>> p.read_bytes()
+      b'Binary file contents'
+
+   An existing file of the same name is overwritten.
+
+   .. versionadded:: 3.5
+
+
+Reading directories
+^^^^^^^^^^^^^^^^^^^
+
+.. method:: Path.iterdir()
+
+   When the path points to a directory, yield path objects of the directory
+   contents::
+
+      >>> p = Path('docs')
+      >>> for child in p.iterdir(): child
+      ...
+      PosixPath('docs/conf.py')
+      PosixPath('docs/_templates')
+      PosixPath('docs/make.bat')
+      PosixPath('docs/index.rst')
+      PosixPath('docs/_build')
+      PosixPath('docs/_static')
+      PosixPath('docs/Makefile')
 
    The children are yielded in arbitrary order, and the special entries
    ``'.'`` and ``'..'`` are not included.  If a file is removed from or added
-   to the directory after creating the iterator, whether a path object for
-   that file be included is unspecified.
+   to the directory after creating the iterator, it is unspecified whether
+   a path object for that file is included.
+
+   If the path is not a directory or otherwise inaccessible, :exc:`OSError` is
+   raised.
+
+.. method:: Path.glob(pattern, *, case_sensitive=None, recurse_symlinks=False)
+
+   Glob the given relative *pattern* in the directory represented by this path,
+   yielding all matching files (of any kind)::
+
+      >>> sorted(Path('.').glob('*.py'))
+      [PosixPath('pathlib.py'), PosixPath('setup.py'), PosixPath('test_pathlib.py')]
+      >>> sorted(Path('.').glob('*/*.py'))
+      [PosixPath('docs/conf.py')]
+      >>> sorted(Path('.').glob('**/*.py'))
+      [PosixPath('build/lib/pathlib.py'),
+       PosixPath('docs/conf.py'),
+       PosixPath('pathlib.py'),
+       PosixPath('setup.py'),
+       PosixPath('test_pathlib.py')]
+
+   .. seealso::
+      :ref:`pathlib-pattern-language` documentation.
+
+   By default, or when the *case_sensitive* keyword-only argument is set to
+   ``None``, this method matches paths using platform-specific casing rules:
+   typically, case-sensitive on POSIX, and case-insensitive on Windows.
+   Set *case_sensitive* to ``True`` or ``False`` to override this behaviour.
+
+   By default, or when the *recurse_symlinks* keyword-only argument is set to
+   ``False``, this method follows symlinks except when expanding "``**``"
+   wildcards. Set *recurse_symlinks* to ``True`` to always follow symlinks.
+
+   .. audit-event:: pathlib.Path.glob self,pattern pathlib.Path.glob
+
+   .. versionchanged:: 3.12
+      The *case_sensitive* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *recurse_symlinks* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *pattern* parameter accepts a :term:`path-like object`.
+
+   .. versionchanged:: 3.13
+      Any :exc:`OSError` exceptions raised from scanning the filesystem are
+      suppressed. In previous versions, such exceptions are suppressed in many
+      cases, but not all.
+
+
+.. method:: Path.rglob(pattern, *, case_sensitive=None, recurse_symlinks=False)
+
+   Glob the given relative *pattern* recursively.  This is like calling
+   :func:`Path.glob` with "``**/``" added in front of the *pattern*.
+
+   .. seealso::
+      :ref:`pathlib-pattern-language` and :meth:`Path.glob` documentation.
+
+   .. audit-event:: pathlib.Path.rglob self,pattern pathlib.Path.rglob
+
+   .. versionchanged:: 3.12
+      The *case_sensitive* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *recurse_symlinks* parameter was added.
+
+   .. versionchanged:: 3.13
+      The *pattern* parameter accepts a :term:`path-like object`.
+
 
 .. method:: Path.walk(top_down=True, on_error=None, follow_symlinks=False)
 
@@ -1217,7 +1367,7 @@ call fails (for example because the path doesn't exist).
    This can be used to prune the search, or to impose a specific order of visiting,
    or even to inform :meth:`Path.walk` about directories the caller creates or
    renames before it resumes :meth:`Path.walk` again. Modifying *dirnames* when
-   *top_down* is false has no effect on the behavior of :meth:`Path.walk()` since the
+   *top_down* is false has no effect on the behavior of :meth:`Path.walk` since the
    directories in *dirnames* have already been generated by the time *dirnames*
    is yielded to the caller.
 
@@ -1281,22 +1431,27 @@ call fails (for example because the path doesn't exist).
 
    .. versionadded:: 3.12
 
-.. method:: Path.lchmod(mode)
 
-   Like :meth:`Path.chmod` but, if the path points to a symbolic link, the
-   symbolic link's mode is changed rather than its target's.
+Creating files and directories
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+.. method:: Path.touch(mode=0o666, exist_ok=True)
 
-.. method:: Path.lstat()
+   Create a file at this given path.  If *mode* is given, it is combined
+   with the process's ``umask`` value to determine the file mode and access
+   flags.  If the file already exists, the function succeeds when *exist_ok*
+   is true (and its modification time is updated to the current time),
+   otherwise :exc:`FileExistsError` is raised.
 
-   Like :meth:`Path.stat` but, if the path points to a symbolic link, return
-   the symbolic link's information rather than its target's.
+   .. seealso::
+      The :meth:`~Path.open`, :meth:`~Path.write_text` and
+      :meth:`~Path.write_bytes` methods are often used to create files.
 
 
 .. method:: Path.mkdir(mode=0o777, parents=False, exist_ok=False)
 
    Create a new directory at this given path.  If *mode* is given, it is
-   combined with the process' ``umask`` value to determine the file mode
+   combined with the process's ``umask`` value to determine the file mode
    and access flags.  If the path already exists, :exc:`FileExistsError`
    is raised.
 
@@ -1318,87 +1473,59 @@ call fails (for example because the path doesn't exist).
       The *exist_ok* parameter was added.
 
 
-.. method:: Path.open(mode='r', buffering=-1, encoding=None, errors=None, newline=None)
-
-   Open the file pointed to by the path, like the built-in :func:`open`
-   function does::
+.. method:: Path.symlink_to(target, target_is_directory=False)
 
-      >>> p = Path('setup.py')
-      >>> with p.open() as f:
-      ...     f.readline()
-      ...
-      '#!/usr/bin/env python3\n'
+   Make this path a symbolic link pointing to *target*.
 
+   On Windows, a symlink represents either a file or a directory, and does not
+   morph to the target dynamically.  If the target is present, the type of the
+   symlink will be created to match. Otherwise, the symlink will be created
+   as a directory if *target_is_directory* is true or a file symlink (the
+   default) otherwise.  On non-Windows platforms, *target_is_directory* is ignored.
 
-.. method:: Path.owner(*, follow_symlinks=True)
+   ::
 
-   Return the name of the user owning the file. :exc:`KeyError` is raised
-   if the file's uid isn't found in the system database.
+      >>> p = Path('mylink')
+      >>> p.symlink_to('setup.py')
+      >>> p.resolve()
+      PosixPath('/home/antoine/pathlib/setup.py')
+      >>> p.stat().st_size
+      956
+      >>> p.lstat().st_size
+      8
 
-   This method normally follows symlinks; to get the owner of the symlink, add
-   the argument ``follow_symlinks=False``.
+   .. note::
+      The order of arguments (link, target) is the reverse
+      of :func:`os.symlink`'s.
 
    .. versionchanged:: 3.13
-      Raises :exc:`UnsupportedOperation` if the :mod:`pwd` module is not
+      Raises :exc:`UnsupportedOperation` if :func:`os.symlink` is not
       available. In previous versions, :exc:`NotImplementedError` was raised.
 
-   .. versionchanged:: 3.13
-      The *follow_symlinks* parameter was added.
 
+.. method:: Path.hardlink_to(target)
 
-.. method:: Path.read_bytes()
-
-   Return the binary contents of the pointed-to file as a bytes object::
-
-      >>> p = Path('my_binary_file')
-      >>> p.write_bytes(b'Binary file contents')
-      20
-      >>> p.read_bytes()
-      b'Binary file contents'
-
-   .. versionadded:: 3.5
-
-
-.. method:: Path.read_text(encoding=None, errors=None, newline=None)
-
-   Return the decoded contents of the pointed-to file as a string::
-
-      >>> p = Path('my_text_file')
-      >>> p.write_text('Text file contents')
-      18
-      >>> p.read_text()
-      'Text file contents'
-
-   The file is opened and then closed. The optional parameters have the same
-   meaning as in :func:`open`.
-
-   .. versionadded:: 3.5
-
-   .. versionchanged:: 3.13
-      The *newline* parameter was added.
-
-.. method:: Path.readlink()
-
-   Return the path to which the symbolic link points (as returned by
-   :func:`os.readlink`)::
+   Make this path a hard link to the same file as *target*.
 
-      >>> p = Path('mylink')
-      >>> p.symlink_to('setup.py')
-      >>> p.readlink()
-      PosixPath('setup.py')
+   .. note::
+      The order of arguments (link, target) is the reverse
+      of :func:`os.link`'s.
 
-   .. versionadded:: 3.9
+   .. versionadded:: 3.10
 
    .. versionchanged:: 3.13
-      Raises :exc:`UnsupportedOperation` if :func:`os.readlink` is not
+      Raises :exc:`UnsupportedOperation` if :func:`os.link` is not
       available. In previous versions, :exc:`NotImplementedError` was raised.
 
 
+Renaming and deleting
+^^^^^^^^^^^^^^^^^^^^^
+
 .. method:: Path.rename(target)
 
-   Rename this file or directory to the given *target*, and return a new Path
-   instance pointing to *target*.  On Unix, if *target* exists and is a file,
-   it will be replaced silently if the user has permission.
+   Rename this file or directory to the given *target*, and return a new
+   :class:`!Path` instance pointing to *target*.  On Unix, if *target* exists
+   and is a file, it will be replaced silently if the user has permission.
    On Windows, if *target* exists, :exc:`FileExistsError` will be raised.
    *target* can be either a string or another path object::
 
@@ -1412,200 +1539,109 @@ call fails (for example because the path doesn't exist).
       'some text'
 
    The target path may be absolute or relative. Relative paths are interpreted
-   relative to the current working directory, *not* the directory of the Path
-   object.
+   relative to the current working directory, *not* the directory of the
+   :class:`!Path` object.
 
    It is implemented in terms of :func:`os.rename` and gives the same guarantees.
 
    .. versionchanged:: 3.8
-      Added return value, return the new Path instance.
+      Added return value, return the new :class:`!Path` instance.
 
 
 .. method:: Path.replace(target)
 
-   Rename this file or directory to the given *target*, and return a new Path
-   instance pointing to *target*.  If *target* points to an existing file or
-   empty directory, it will be unconditionally replaced.
+   Rename this file or directory to the given *target*, and return a new
+   :class:`!Path` instance pointing to *target*.  If *target* points to an
+   existing file or empty directory, it will be unconditionally replaced.
 
    The target path may be absolute or relative. Relative paths are interpreted
-   relative to the current working directory, *not* the directory of the Path
-   object.
+   relative to the current working directory, *not* the directory of the
+   :class:`!Path` object.
 
    .. versionchanged:: 3.8
-      Added return value, return the new Path instance.
-
-
-.. method:: Path.absolute()
-
-   Make the path absolute, without normalization or resolving symlinks.
-   Returns a new path object::
-
-      >>> p = Path('tests')
-      >>> p
-      PosixPath('tests')
-      >>> p.absolute()
-      PosixPath('/home/antoine/pathlib/tests')
-
-
-.. method:: Path.resolve(strict=False)
+      Added return value, return the new :class:`!Path` instance.
 
-   Make the path absolute, resolving any symlinks.  A new path object is
-   returned::
 
-      >>> p = Path()
-      >>> p
-      PosixPath('.')
-      >>> p.resolve()
-      PosixPath('/home/antoine/pathlib')
+.. method:: Path.unlink(missing_ok=False)
 
-   "``..``" components are also eliminated (this is the only method to do so)::
+   Remove this file or symbolic link.  If the path points to a directory,
+   use :func:`Path.rmdir` instead.
 
-      >>> p = Path('docs/../setup.py')
-      >>> p.resolve()
-      PosixPath('/home/antoine/pathlib/setup.py')
+   If *missing_ok* is false (the default), :exc:`FileNotFoundError` is
+   raised if the path does not exist.
 
-   If a path doesn't exist or a symlink loop is encountered, and *strict* is
-   ``True``, :exc:`OSError` is raised.  If *strict* is ``False``, the path is
-   resolved as far as possible and any remainder is appended without checking
-   whether it exists.
+   If *missing_ok* is true, :exc:`FileNotFoundError` exceptions will be
+   ignored (same behavior as the POSIX ``rm -f`` command).
 
-   .. versionchanged:: 3.6
-      The *strict* parameter was added (pre-3.6 behavior is strict).
+   .. versionchanged:: 3.8
+      The *missing_ok* parameter was added.
 
-   .. versionchanged:: 3.13
-      Symlink loops are treated like other errors: :exc:`OSError` is raised in
-      strict mode, and no exception is raised in non-strict mode. In previous
-      versions, :exc:`RuntimeError` is raised no matter the value of *strict*.
 
 .. method:: Path.rmdir()
 
    Remove this directory.  The directory must be empty.
 
 
-.. method:: Path.samefile(other_path)
-
-   Return whether this path points to the same file as *other_path*, which
-   can be either a Path object, or a string.  The semantics are similar
-   to :func:`os.path.samefile` and :func:`os.path.samestat`.
-
-   An :exc:`OSError` can be raised if either file cannot be accessed for some
-   reason.
-
-   ::
-
-      >>> p = Path('spam')
-      >>> q = Path('eggs')
-      >>> p.samefile(q)
-      False
-      >>> p.samefile('spam')
-      True
+Permissions and ownership
+^^^^^^^^^^^^^^^^^^^^^^^^^
 
-   .. versionadded:: 3.5
-
-
-.. method:: Path.symlink_to(target, target_is_directory=False)
-
-   Make this path a symbolic link pointing to *target*.
-
-   On Windows, a symlink represents either a file or a directory, and does not
-   morph to the target dynamically.  If the target is present, the type of the
-   symlink will be created to match. Otherwise, the symlink will be created
-   as a directory if *target_is_directory* is ``True`` or a file symlink (the
-   default) otherwise.  On non-Windows platforms, *target_is_directory* is ignored.
-
-   ::
+.. method:: Path.owner(*, follow_symlinks=True)
 
-      >>> p = Path('mylink')
-      >>> p.symlink_to('setup.py')
-      >>> p.resolve()
-      PosixPath('/home/antoine/pathlib/setup.py')
-      >>> p.stat().st_size
-      956
-      >>> p.lstat().st_size
-      8
+   Return the name of the user owning the file. :exc:`KeyError` is raised
+   if the file's user identifier (UID) isn't found in the system database.
 
-   .. note::
-      The order of arguments (link, target) is the reverse
-      of :func:`os.symlink`'s.
+   This method normally follows symlinks; to get the owner of the symlink, add
+   the argument ``follow_symlinks=False``.
 
    .. versionchanged:: 3.13
-      Raises :exc:`UnsupportedOperation` if :func:`os.symlink` is not
-      available. In previous versions, :exc:`NotImplementedError` was raised.
-
-
-.. method:: Path.hardlink_to(target)
-
-   Make this path a hard link to the same file as *target*.
-
-   .. note::
-      The order of arguments (link, target) is the reverse
-      of :func:`os.link`'s.
-
-   .. versionadded:: 3.10
+      Raises :exc:`UnsupportedOperation` if the :mod:`pwd` module is not
+      available. In earlier versions, :exc:`NotImplementedError` was raised.
 
    .. versionchanged:: 3.13
-      Raises :exc:`UnsupportedOperation` if :func:`os.link` is not
-      available. In previous versions, :exc:`NotImplementedError` was raised.
-
-
-.. method:: Path.touch(mode=0o666, exist_ok=True)
-
-   Create a file at this given path.  If *mode* is given, it is combined
-   with the process' ``umask`` value to determine the file mode and access
-   flags.  If the file already exists, the function succeeds if *exist_ok*
-   is true (and its modification time is updated to the current time),
-   otherwise :exc:`FileExistsError` is raised.
-
-
-.. method:: Path.unlink(missing_ok=False)
-
-   Remove this file or symbolic link.  If the path points to a directory,
-   use :func:`Path.rmdir` instead.
+      The *follow_symlinks* parameter was added.
 
-   If *missing_ok* is false (the default), :exc:`FileNotFoundError` is
-   raised if the path does not exist.
 
-   If *missing_ok* is true, :exc:`FileNotFoundError` exceptions will be
-   ignored (same behavior as the POSIX ``rm -f`` command).
+.. method:: Path.group(*, follow_symlinks=True)
 
-   .. versionchanged:: 3.8
-      The *missing_ok* parameter was added.
+   Return the name of the group owning the file. :exc:`KeyError` is raised
+   if the file's group identifier (GID) isn't found in the system database.
 
+   This method normally follows symlinks; to get the group of the symlink, add
+   the argument ``follow_symlinks=False``.
 
-.. method:: Path.write_bytes(data)
+   .. versionchanged:: 3.13
+      Raises :exc:`UnsupportedOperation` if the :mod:`grp` module is not
+      available. In earlier versions, :exc:`NotImplementedError` was raised.
 
-   Open the file pointed to in bytes mode, write *data* to it, and close the
-   file::
+   .. versionchanged:: 3.13
+      The *follow_symlinks* parameter was added.
 
-      >>> p = Path('my_binary_file')
-      >>> p.write_bytes(b'Binary file contents')
-      20
-      >>> p.read_bytes()
-      b'Binary file contents'
 
-   An existing file of the same name is overwritten.
+.. method:: Path.chmod(mode, *, follow_symlinks=True)
 
-   .. versionadded:: 3.5
+   Change the file mode and permissions, like :func:`os.chmod`.
 
+   This method normally follows symlinks. Some Unix flavours support changing
+   permissions on the symlink itself; on these platforms you may add the
+   argument ``follow_symlinks=False``, or use :meth:`~Path.lchmod`.
 
-.. method:: Path.write_text(data, encoding=None, errors=None, newline=None)
+   ::
 
-   Open the file pointed to in text mode, write *data* to it, and close the
-   file::
+      >>> p = Path('setup.py')
+      >>> p.stat().st_mode
+      33277
+      >>> p.chmod(0o444)
+      >>> p.stat().st_mode
+      33060
 
-      >>> p = Path('my_text_file')
-      >>> p.write_text('Text file contents')
-      18
-      >>> p.read_text()
-      'Text file contents'
+   .. versionchanged:: 3.10
+      The *follow_symlinks* parameter was added.
 
-   An existing file of the same name is overwritten. The optional parameters
-   have the same meaning as in :func:`open`.
 
-   .. versionadded:: 3.5
+.. method:: Path.lchmod(mode)
 
-   .. versionchanged:: 3.10
-      The *newline* parameter was added.
+   Like :meth:`Path.chmod` but, if the path points to a symbolic link, the
+   symbolic link's mode is changed rather than its target's.
 
 
 .. _pathlib-pattern-language:
@@ -1729,39 +1765,54 @@ Corresponding tools
 Below is a table mapping various :mod:`os` functions to their corresponding
 :class:`PurePath`/:class:`Path` equivalent.
 
-====================================   ==============================
-:mod:`os` and :mod:`os.path`           :mod:`pathlib`
-====================================   ==============================
-:func:`os.path.abspath`                :meth:`Path.absolute`
-:func:`os.path.realpath`               :meth:`Path.resolve`
-:func:`os.chmod`                       :meth:`Path.chmod`
-:func:`os.mkdir`                       :meth:`Path.mkdir`
-:func:`os.makedirs`                    :meth:`Path.mkdir`
-:func:`os.rename`                      :meth:`Path.rename`
-:func:`os.replace`                     :meth:`Path.replace`
-:func:`os.rmdir`                       :meth:`Path.rmdir`
-:func:`os.remove`, :func:`os.unlink`   :meth:`Path.unlink`
-:func:`os.getcwd`                      :func:`Path.cwd`
-:func:`os.path.exists`                 :meth:`Path.exists`
-:func:`os.path.expanduser`             :meth:`Path.expanduser` and
-                                       :meth:`Path.home`
-:func:`os.listdir`                     :meth:`Path.iterdir`
-:func:`os.walk`                        :meth:`Path.walk`
-:func:`os.path.isdir`                  :meth:`Path.is_dir`
-:func:`os.path.isfile`                 :meth:`Path.is_file`
-:func:`os.path.islink`                 :meth:`Path.is_symlink`
-:func:`os.link`                        :meth:`Path.hardlink_to`
-:func:`os.symlink`                     :meth:`Path.symlink_to`
-:func:`os.readlink`                    :meth:`Path.readlink`
-:func:`os.path.relpath`                :meth:`PurePath.relative_to`
-:func:`os.stat`                        :meth:`Path.stat`,
-                                       :meth:`Path.owner`,
-                                       :meth:`Path.group`
-:func:`os.path.isabs`                  :meth:`PurePath.is_absolute`
-:func:`os.path.join`                   :func:`PurePath.joinpath`
-:func:`os.path.basename`               :attr:`PurePath.name`
-:func:`os.path.dirname`                :attr:`PurePath.parent`
-:func:`os.path.samefile`               :meth:`Path.samefile`
-:func:`os.path.splitext`               :attr:`PurePath.stem` and
-                                       :attr:`PurePath.suffix`
-====================================   ==============================
+=====================================   ==============================================
+:mod:`os` and :mod:`os.path`            :mod:`pathlib`
+=====================================   ==============================================
+:func:`os.path.dirname`                 :attr:`PurePath.parent`
+:func:`os.path.basename`                :attr:`PurePath.name`
+:func:`os.path.splitext`                :attr:`PurePath.stem`, :attr:`PurePath.suffix`
+:func:`os.path.join`                    :meth:`PurePath.joinpath`
+:func:`os.path.isabs`                   :meth:`PurePath.is_absolute`
+:func:`os.path.relpath`                 :meth:`PurePath.relative_to` [1]_
+:func:`os.path.expanduser`              :meth:`Path.expanduser` [2]_
+:func:`os.path.realpath`                :meth:`Path.resolve`
+:func:`os.path.abspath`                 :meth:`Path.absolute` [3]_
+:func:`os.path.exists`                  :meth:`Path.exists`
+:func:`os.path.isfile`                  :meth:`Path.is_file`
+:func:`os.path.isdir`                   :meth:`Path.is_dir`
+:func:`os.path.islink`                  :meth:`Path.is_symlink`
+:func:`os.path.isjunction`              :meth:`Path.is_junction`
+:func:`os.path.ismount`                 :meth:`Path.is_mount`
+:func:`os.path.samefile`                :meth:`Path.samefile`
+:func:`os.getcwd`                       :meth:`Path.cwd`
+:func:`os.stat`                         :meth:`Path.stat`
+:func:`os.lstat`                        :meth:`Path.lstat`
+:func:`os.listdir`                      :meth:`Path.iterdir`
+:func:`os.walk`                         :meth:`Path.walk` [4]_
+:func:`os.mkdir`, :func:`os.makedirs`   :meth:`Path.mkdir`
+:func:`os.link`                         :meth:`Path.hardlink_to`
+:func:`os.symlink`                      :meth:`Path.symlink_to`
+:func:`os.readlink`                     :meth:`Path.readlink`
+:func:`os.rename`                       :meth:`Path.rename`
+:func:`os.replace`                      :meth:`Path.replace`
+:func:`os.remove`, :func:`os.unlink`    :meth:`Path.unlink`
+:func:`os.rmdir`                        :meth:`Path.rmdir`
+:func:`os.chmod`                        :meth:`Path.chmod`
+:func:`os.lchmod`                       :meth:`Path.lchmod`
+=====================================   ==============================================
+
+.. rubric:: Footnotes
+
+.. [1] :func:`os.path.relpath` calls :func:`~os.path.abspath` to make paths
+   absolute and remove "``..``" parts, whereas :meth:`PurePath.relative_to`
+   is a lexical operation that raises :exc:`ValueError` when its inputs'
+   anchors differ (e.g. if one path is absolute and the other relative.)
+.. [2] :func:`os.path.expanduser` returns the path unchanged if the home
+   directory can't be resolved, whereas :meth:`Path.expanduser` raises
+   :exc:`RuntimeError`.
+.. [3] :func:`os.path.abspath` removes "``..``" components without resolving
+   symlinks, which may change the meaning of the path, whereas
+   :meth:`Path.absolute` leaves any "``..``" components in the path.
+.. [4] :func:`os.walk` always follows symlinks when categorizing paths into
+   *dirnames* and *filenames*, whereas :meth:`Path.walk` categorizes all
+   symlinks into *filenames* when *follow_symlinks* is false (the default.)
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst
index 7a47a7d5d6754f..50cafc1e2d823d 100644
--- a/Doc/library/pdb.rst
+++ b/Doc/library/pdb.rst
@@ -49,7 +49,7 @@ You can then step through the code following this statement, and continue
 running without the debugger using the :pdbcmd:`continue` command.
 
 .. versionchanged:: 3.7
-   The built-in :func:`breakpoint()`, when called with defaults, can be used
+   The built-in :func:`breakpoint`, when called with defaults, can be used
    instead of ``import pdb; pdb.set_trace()``.
 
 ::
@@ -123,6 +123,11 @@ The typical usage to inspect a crashed program is::
    0
    (Pdb)
 
+.. versionchanged:: 3.13
+   The implementation of :pep:`667` means that name assignments made via ``pdb``
+   will immediately affect the active scope, even when running inside an
+   :term:`optimized scope`.
+
 
 The module defines the following functions; each enters the debugger in a
 slightly different way:
@@ -168,13 +173,15 @@ slightly different way:
       :func:`set_trace` will enter the debugger immediately, rather than
       on the next line of code to be executed.
 
-.. function:: post_mortem(traceback=None)
+.. function:: post_mortem(t=None)
 
-   Enter post-mortem debugging of the given *traceback* object.  If no
-   *traceback* is given, it uses the one of the exception that is currently
-   being handled (an exception must be being handled if the default is to be
-   used).
+   Enter post-mortem debugging of the given exception or
+   :ref:`traceback object <traceback-objects>`. If no value is given, it uses
+   the exception that is currently being handled, or raises ``ValueError`` if
+   there isn’t one.
 
+   .. versionchanged:: 3.13
+      Support for exception objects was added.
 
 .. function:: pm()
 
@@ -285,6 +292,8 @@ There are three preset *convenience variables*:
 
 .. versionadded:: 3.12
 
+   Added the *convenience variable* feature.
+
 .. index::
    pair: .pdbrc; file
    triple: debugger; configuration; file
@@ -579,18 +588,17 @@ can be overridden by the local file.
 
 .. pdbcommand:: interact
 
-   Start an interactive interpreter (using the :mod:`code` module) whose global
-   namespace contains all the (global and local) names found in the current
-   scope. Use ``exit()`` or ``quit()`` to exit the interpreter and return to
-   the debugger.
+   Start an interactive interpreter (using the :mod:`code` module) in a new
+   global namespace initialised from the local and global namespaces for the
+   current scope. Use ``exit()`` or ``quit()`` to exit the interpreter and
+   return to the debugger.
 
    .. note::
 
-      Because interact creates a new global namespace with the current global
-      and local namespace for execution, assignment to variables will not
-      affect the original namespaces.
-      However, modification to the mutable objects will be reflected in the
-      original namespaces.
+      As ``interact`` creates a new dedicated namespace for code execution,
+      assignments to variables will not affect the original namespaces.
+      However, modifications to any referenced mutable objects will be reflected
+      in the original namespaces as usual.
 
    .. versionadded:: 3.2
 
diff --git a/Doc/library/pickle.rst b/Doc/library/pickle.rst
index 223c27237e4d34..57fbe5b6ece6b6 100644
--- a/Doc/library/pickle.rst
+++ b/Doc/library/pickle.rst
@@ -1,5 +1,5 @@
-:mod:`pickle` --- Python object serialization
-=============================================
+:mod:`!pickle` --- Python object serialization
+==============================================
 
 .. module:: pickle
    :synopsis: Convert Python objects to streams of bytes and back.
@@ -314,16 +314,16 @@ The :mod:`pickle` module exports three classes, :class:`Pickler`,
    map the new Python 3 names to the old module names used in Python 2, so
    that the pickle data stream is readable with Python 2.
 
-   If *buffer_callback* is None (the default), buffer views are
+   If *buffer_callback* is ``None`` (the default), buffer views are
    serialized into *file* as part of the pickle stream.
 
-   If *buffer_callback* is not None, then it can be called any number
+   If *buffer_callback* is not ``None``, then it can be called any number
    of times with a buffer view.  If the callback returns a false value
-   (such as None), the given buffer is :ref:`out-of-band <pickle-oob>`;
+   (such as ``None``), the given buffer is :ref:`out-of-band <pickle-oob>`;
    otherwise the buffer is serialized in-band, i.e. inside the pickle stream.
 
-   It is an error if *buffer_callback* is not None and *protocol* is
-   None or smaller than 5.
+   It is an error if *buffer_callback* is not ``None`` and *protocol* is
+   ``None`` or smaller than 5.
 
    .. versionchanged:: 3.8
       The *buffer_callback* argument was added.
@@ -420,12 +420,12 @@ The :mod:`pickle` module exports three classes, :class:`Pickler`,
    instances of :class:`~datetime.datetime`, :class:`~datetime.date` and
    :class:`~datetime.time` pickled by Python 2.
 
-   If *buffers* is None (the default), then all data necessary for
+   If *buffers* is ``None`` (the default), then all data necessary for
    deserialization must be contained in the pickle stream.  This means
-   that the *buffer_callback* argument was None when a :class:`Pickler`
+   that the *buffer_callback* argument was ``None`` when a :class:`Pickler`
    was instantiated (or when :func:`dump` or :func:`dumps` was called).
 
-   If *buffers* is not None, it should be an iterable of buffer-enabled
+   If *buffers* is not ``None``, it should be an iterable of buffer-enabled
    objects that is consumed each time the pickle stream references
    an :ref:`out-of-band <pickle-oob>` buffer view.  Such buffers have been
    given in order to the *buffer_callback* of a Pickler object.
diff --git a/Doc/library/pickletools.rst b/Doc/library/pickletools.rst
index 9739207a224431..e072605974f6c2 100644
--- a/Doc/library/pickletools.rst
+++ b/Doc/library/pickletools.rst
@@ -1,5 +1,5 @@
-:mod:`pickletools` --- Tools for pickle developers
-==================================================
+:mod:`!pickletools` --- Tools for pickle developers
+===================================================
 
 .. module:: pickletools
    :synopsis: Contains extensive comments about the pickle protocols and
diff --git a/Doc/library/pipes.rst b/Doc/library/pipes.rst
new file mode 100644
index 00000000000000..d9bcc3a5d99c9b
--- /dev/null
+++ b/Doc/library/pipes.rst
@@ -0,0 +1,17 @@
+:mod:`!pipes` --- Interface to shell pipelines
+==============================================
+
+.. module:: pipes
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+Applications should use the :mod:`subprocess` module instead.
+
+The last version of Python that provided the :mod:`!pipes` module was
+`Python 3.12 <https://docs.python.org/3.12/library/pipes.html>`_.
diff --git a/Doc/library/pkgutil.rst b/Doc/library/pkgutil.rst
index 891a867d1ceb68..4a39d53a5f1440 100644
--- a/Doc/library/pkgutil.rst
+++ b/Doc/library/pkgutil.rst
@@ -1,5 +1,5 @@
-:mod:`pkgutil` --- Package extension utility
-============================================
+:mod:`!pkgutil` --- Package extension utility
+=============================================
 
 .. module:: pkgutil
    :synopsis: Utilities for the import system.
@@ -26,7 +26,8 @@ support.
       __path__ = extend_path(__path__, __name__)
 
    For each directory on :data:`sys.path` that has a subdirectory that matches the
-   package name, add the subdirectory to the package's :attr:`__path__`.  This is useful
+   package name, add the subdirectory to the package's
+   :attr:`~module.__path__`. This is useful
    if one wants to distribute different parts of a single logical package as multiple
    directories.
 
@@ -34,9 +35,9 @@ support.
    *name* argument.  This feature is similar to :file:`\*.pth` files (see the
    :mod:`site` module for more information), except that it doesn't special-case
    lines starting with ``import``.  A :file:`\*.pkg` file is trusted at face
-   value: apart from checking for duplicates, all entries found in a
-   :file:`\*.pkg` file are added to the path, regardless of whether they exist
-   on the filesystem.  (This is a feature.)
+   value: apart from skipping blank lines and ignoring comments, all entries
+   found in a :file:`\*.pkg` file are added to the path, regardless of whether
+   they exist on the filesystem (this is a feature).
 
    If the input path is not a list (as is the case for frozen packages) it is
    returned unchanged.  The input path is not modified; an extended copy is
diff --git a/Doc/library/platform.rst b/Doc/library/platform.rst
index 66af37e3073852..1beb3b9eb89d22 100644
--- a/Doc/library/platform.rst
+++ b/Doc/library/platform.rst
@@ -1,5 +1,5 @@
-:mod:`platform` ---  Access to underlying platform's identifying data
-=====================================================================
+:mod:`!platform` ---  Access to underlying platform's identifying data
+======================================================================
 
 .. module:: platform
    :synopsis: Retrieves as much platform identifying data as possible.
@@ -150,7 +150,7 @@ Cross Platform
 
    On iOS and Android, this returns the user-facing OS name (i.e, ``'iOS``,
    ``'iPadOS'`` or ``'Android'``). To obtain the kernel name (``'Darwin'`` or
-   ``'Linux'``), use :func:`os.uname()`.
+   ``'Linux'``), use :func:`os.uname`.
 
 .. function:: system_alias(system, release, version)
 
@@ -165,7 +165,7 @@ Cross Platform
    returned if the value cannot be determined.
 
    On iOS and Android, this is the user-facing OS version. To obtain the
-   Darwin or Linux kernel version, use :func:`os.uname()`.
+   Darwin or Linux kernel version, use :func:`os.uname`.
 
 .. function:: uname()
 
diff --git a/Doc/library/plistlib.rst b/Doc/library/plistlib.rst
index 7416ca2650bab4..2906ebe7822f52 100644
--- a/Doc/library/plistlib.rst
+++ b/Doc/library/plistlib.rst
@@ -1,5 +1,5 @@
-:mod:`plistlib` --- Generate and parse Apple ``.plist`` files
-=============================================================
+:mod:`!plistlib` --- Generate and parse Apple ``.plist`` files
+==============================================================
 
 .. module:: plistlib
    :synopsis: Generate and parse Apple plist files.
@@ -117,7 +117,7 @@ This module defines the following functions:
    when a key of a dictionary is not a string, otherwise such keys are skipped.
 
    When *aware_datetime* is true and any field with type ``datetime.datetime``
-   is set as a :ref:`aware object <datetime-naive-aware>`, it will convert to
+   is set as an :ref:`aware object <datetime-naive-aware>`, it will convert to
    UTC timezone before writing it.
 
    A :exc:`TypeError` will be raised if the object is of an unsupported type or
diff --git a/Doc/library/poplib.rst b/Doc/library/poplib.rst
index 943eb21f6eec02..23f20b00e6dc6d 100644
--- a/Doc/library/poplib.rst
+++ b/Doc/library/poplib.rst
@@ -1,5 +1,5 @@
-:mod:`poplib` --- POP3 protocol client
-======================================
+:mod:`!poplib` --- POP3 protocol client
+=======================================
 
 .. module:: poplib
    :synopsis: POP3 protocol client (requires sockets).
diff --git a/Doc/library/posix.rst b/Doc/library/posix.rst
index 5871574b442667..14ab3e91e8a8e4 100644
--- a/Doc/library/posix.rst
+++ b/Doc/library/posix.rst
@@ -1,5 +1,5 @@
-:mod:`posix` --- The most common POSIX system calls
-===================================================
+:mod:`!posix` --- The most common POSIX system calls
+====================================================
 
 .. module:: posix
    :platform: Unix
diff --git a/Doc/library/pprint.rst b/Doc/library/pprint.rst
index 6dfea25d755f75..2985f31bacb47a 100644
--- a/Doc/library/pprint.rst
+++ b/Doc/library/pprint.rst
@@ -1,5 +1,5 @@
-:mod:`pprint` --- Data pretty printer
-=====================================
+:mod:`!pprint` --- Data pretty printer
+======================================
 
 .. module:: pprint
    :synopsis: Data pretty printer.
@@ -35,24 +35,66 @@ Dictionaries are sorted by key before the display is computed.
 Functions
 ---------
 
-.. function:: pp(object, *args, sort_dicts=False, **kwargs)
+.. function:: pp(object, stream=None, indent=1, width=80, depth=None, *, \
+                     compact=False, sort_dicts=False, underscore_numbers=False)
+
+   Prints the formatted representation of *object*, followed by a newline.
+   This function may be used in the interactive interpreter
+   instead of the :func:`print` function for inspecting values.
+   Tip: you can reassign ``print = pprint.pp`` for use within a scope.
+
+   :param object:
+      The object to be printed.
+
+   :param stream:
+      A file-like object to which the output will be written
+      by calling its :meth:`!write` method.
+      If ``None`` (the default), :data:`sys.stdout` is used.
+   :type stream: :term:`file-like object` | None
+
+   :param int indent:
+      The amount of indentation added for each nesting level.
+
+   :param int width:
+      The desired maximum number of characters per line in the output.
+      If a structure cannot be formatted within the width constraint,
+      a best effort will be made.
+
+   :param depth:
+      The number of nesting levels which may be printed.
+      If the data structure being printed is too deep,
+      the next contained level is replaced by ``...``.
+      If ``None`` (the default), there is no constraint
+      on the depth of the objects being formatted.
+   :type depth: int | None
+
+   :param bool compact:
+      Control the way long :term:`sequences <sequence>` are formatted.
+      If ``False`` (the default),
+      each item of a sequence will be formatted on a separate line,
+      otherwise as many items as will fit within the *width*
+      will be formatted on each output line.
+
+   :param bool sort_dicts:
+      If ``True``, dictionaries will be formatted with
+      their keys sorted, otherwise
+      they will be displayed in insertion order (the default).
+
+   :param bool underscore_numbers:
+      If ``True``,
+      integers will be formatted with the ``_`` character for a thousands separator,
+      otherwise underscores are not displayed (the default).
 
-   Prints the formatted representation of *object* followed by a newline.
-   If *sort_dicts* is false (the default), dictionaries will be displayed with
-   their keys in insertion order, otherwise the dict keys will be sorted.
-   *args* and *kwargs* will be passed to :func:`~pprint.pprint` as formatting
-   parameters.
-
-      >>> import pprint
-      >>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
-      >>> stuff.insert(0, stuff)
-      >>> pprint.pp(stuff)
-      [<Recursion on list with id=...>,
-       'spam',
-       'eggs',
-       'lumberjack',
-       'knights',
-       'ni']
+   >>> import pprint
+   >>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
+   >>> stuff.insert(0, stuff)
+   >>> pprint.pp(stuff)
+   [<Recursion on list with id=...>,
+    'spam',
+    'eggs',
+    'lumberjack',
+    'knights',
+    'ni']
 
    .. versionadded:: 3.8
 
@@ -60,19 +102,10 @@ Functions
 .. function:: pprint(object, stream=None, indent=1, width=80, depth=None, *, \
                      compact=False, sort_dicts=True, underscore_numbers=False)
 
-   Prints the formatted representation of *object* on *stream*, followed by a
-   newline.  If *stream* is ``None``, :data:`sys.stdout` is used. This may be used
-   in the interactive interpreter instead of the :func:`print` function for
-   inspecting values (you can even reassign ``print = pprint.pprint`` for use
-   within a scope).
-
-   The configuration parameters *stream*, *indent*, *width*, *depth*,
-   *compact*, *sort_dicts* and *underscore_numbers* are passed to the
-   :class:`PrettyPrinter` constructor and their meanings are as
-   described in its documentation below.
+   Alias for :func:`~pprint.pp` with *sort_dicts* set to ``True`` by default,
+   which would automatically sort the dictionaries' keys,
+   you might want to use :func:`~pprint.pp` instead where it is ``False`` by default.
 
-   Note that *sort_dicts* is ``True`` by default and you might want to use
-   :func:`~pprint.pp` instead where it is ``False`` by default.
 
 .. function:: pformat(object, indent=1, width=80, depth=None, *, \
                       compact=False, sort_dicts=True, underscore_numbers=False)
@@ -80,7 +113,7 @@ Functions
    Return the formatted representation of *object* as a string.  *indent*,
    *width*, *depth*, *compact*, *sort_dicts* and *underscore_numbers* are
    passed to the :class:`PrettyPrinter` constructor as formatting parameters
-   and their meanings are as described in its documentation below.
+   and their meanings are as described in the documentation above.
 
 
 .. function:: isreadable(object)
@@ -119,51 +152,39 @@ Functions
 PrettyPrinter Objects
 ---------------------
 
-This module defines one class:
-
-.. First the implementation class:
-
-
 .. index:: single: ...; placeholder
 
 .. class:: PrettyPrinter(indent=1, width=80, depth=None, stream=None, *, \
                          compact=False, sort_dicts=True, underscore_numbers=False)
 
-   Construct a :class:`PrettyPrinter` instance.  This constructor understands
-   several keyword parameters.
-
-   *stream* (default :data:`!sys.stdout`) is a :term:`file-like object` to
-   which the output will be written by calling its :meth:`!write` method.
-   If both *stream* and :data:`!sys.stdout` are ``None``, then
-   :meth:`~PrettyPrinter.pprint` silently returns.
+   Construct a :class:`PrettyPrinter` instance.
 
-   Other values configure the manner in which nesting of complex data
-   structures is displayed.
+   Arguments have the same meaning as for :func:`~pprint.pp`.
+   Note that they are in a different order, and that *sort_dicts* defaults to ``True``.
 
-   *indent* (default 1) specifies the amount of indentation added for
-   each nesting level.
-
-   *depth* controls the number of nesting levels which may be printed; if
-   the data structure being printed is too deep, the next contained level
-   is replaced by ``...``.  By default, there is no constraint on the
-   depth of the objects being formatted.
-
-   *width* (default 80) specifies the desired maximum number of characters per
-   line in the output. If a structure cannot be formatted within the width
-   constraint, a best effort will be made.
-
-   *compact* impacts the way that long sequences (lists, tuples, sets, etc)
-   are formatted. If *compact* is false (the default) then each item of a
-   sequence will be formatted on a separate line.  If *compact* is true, as
-   many items as will fit within the *width* will be formatted on each output
-   line.
-
-   If *sort_dicts* is true (the default), dictionaries will be formatted with
-   their keys sorted, otherwise they will display in insertion order.
+   >>> import pprint
+   >>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
+   >>> stuff.insert(0, stuff[:])
+   >>> pp = pprint.PrettyPrinter(indent=4)
+   >>> pp.pprint(stuff)
+   [   ['spam', 'eggs', 'lumberjack', 'knights', 'ni'],
+       'spam',
+       'eggs',
+       'lumberjack',
+       'knights',
+       'ni']
+   >>> pp = pprint.PrettyPrinter(width=41, compact=True)
+   >>> pp.pprint(stuff)
+   [['spam', 'eggs', 'lumberjack',
+     'knights', 'ni'],
+    'spam', 'eggs', 'lumberjack', 'knights',
+    'ni']
+   >>> tup = ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead',
+   ... ('parrot', ('fresh fruit',))))))))
+   >>> pp = pprint.PrettyPrinter(depth=6)
+   >>> pp.pprint(tup)
+   ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead', (...)))))))
 
-   If *underscore_numbers* is true, integers will be formatted with the
-   ``_`` character for a thousands separator, otherwise underscores are not
-   displayed (the default).
 
    .. versionchanged:: 3.4
       Added the *compact* parameter.
@@ -177,29 +198,6 @@ This module defines one class:
    .. versionchanged:: 3.11
       No longer attempts to write to :data:`!sys.stdout` if it is ``None``.
 
-      >>> import pprint
-      >>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
-      >>> stuff.insert(0, stuff[:])
-      >>> pp = pprint.PrettyPrinter(indent=4)
-      >>> pp.pprint(stuff)
-      [   ['spam', 'eggs', 'lumberjack', 'knights', 'ni'],
-          'spam',
-          'eggs',
-          'lumberjack',
-          'knights',
-          'ni']
-      >>> pp = pprint.PrettyPrinter(width=41, compact=True)
-      >>> pp.pprint(stuff)
-      [['spam', 'eggs', 'lumberjack',
-        'knights', 'ni'],
-       'spam', 'eggs', 'lumberjack', 'knights',
-       'ni']
-      >>> tup = ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead',
-      ... ('parrot', ('fresh fruit',))))))))
-      >>> pp = pprint.PrettyPrinter(depth=6)
-      >>> pp.pprint(tup)
-      ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead', (...)))))))
-
 
 :class:`PrettyPrinter` instances have the following methods:
 
@@ -269,7 +267,7 @@ let's fetch information about a project from `PyPI <https://pypi.org>`_::
    >>> import json
    >>> import pprint
    >>> from urllib.request import urlopen
-   >>> with urlopen('https://pypi.org/pypi/sampleproject/json') as resp:
+   >>> with urlopen('https://pypi.org/pypi/sampleproject/1.2.0/json') as resp:
    ...     project_info = json.load(resp)['info']
 
 In its basic form, :func:`~pprint.pp` shows the whole object::
diff --git a/Doc/library/profile.rst b/Doc/library/profile.rst
index 3ca802e024bc27..3334833eba6b8c 100644
--- a/Doc/library/profile.rst
+++ b/Doc/library/profile.rst
@@ -234,7 +234,7 @@ functions:
 .. function:: runctx(command, globals, locals, filename=None, sort=-1)
 
    This function is similar to :func:`run`, with added arguments to supply the
-   globals and locals dictionaries for the *command* string. This routine
+   globals and locals mappings for the *command* string. This routine
    executes::
 
       exec(command, globals, locals)
@@ -682,7 +682,7 @@ you are using :class:`profile.Profile` or :class:`cProfile.Profile`,
    that you choose (see :ref:`profile-calibration`).  For most machines, a timer
    that returns a lone integer value will provide the best results in terms of
    low overhead during profiling.  (:func:`os.times` is *pretty* bad, as it
-   returns a tuple of floating point values).  If you want to substitute a
+   returns a tuple of floating-point values).  If you want to substitute a
    better timer in the cleanest fashion, derive a class and hardwire a
    replacement dispatch method that best handles your timer call, along with the
    appropriate calibration constant.
@@ -699,7 +699,7 @@ you are using :class:`profile.Profile` or :class:`cProfile.Profile`,
    As the :class:`cProfile.Profile` class cannot be calibrated, custom timer
    functions should be used with care and should be as fast as possible.  For
    the best results with a custom timer, it might be necessary to hard-code it
-   in the C source of the internal :mod:`_lsprof` module.
+   in the C source of the internal :mod:`!_lsprof` module.
 
 Python 3.3 adds several new functions in :mod:`time` that can be used to make
 precise measurements of process or wall-clock time. For example, see
diff --git a/Doc/library/pty.rst b/Doc/library/pty.rst
index bd2f5ed45cb8b4..1a44bb13a841de 100644
--- a/Doc/library/pty.rst
+++ b/Doc/library/pty.rst
@@ -1,5 +1,5 @@
-:mod:`pty` --- Pseudo-terminal utilities
-========================================
+:mod:`!pty` --- Pseudo-terminal utilities
+=========================================
 
 .. module:: pty
    :platform: Unix
diff --git a/Doc/library/pwd.rst b/Doc/library/pwd.rst
index a6c6d79b60b20a..e1ff32912132f7 100644
--- a/Doc/library/pwd.rst
+++ b/Doc/library/pwd.rst
@@ -1,5 +1,5 @@
-:mod:`pwd` --- The password database
-====================================
+:mod:`!pwd` --- The password database
+=====================================
 
 .. module:: pwd
    :platform: Unix
diff --git a/Doc/library/py_compile.rst b/Doc/library/py_compile.rst
index a35fa0ba3f7bde..75aa739d1003b8 100644
--- a/Doc/library/py_compile.rst
+++ b/Doc/library/py_compile.rst
@@ -1,5 +1,5 @@
-:mod:`py_compile` --- Compile Python source files
-=================================================
+:mod:`!py_compile` --- Compile Python source files
+==================================================
 
 .. module:: py_compile
    :synopsis: Generate byte-code files from Python source files.
diff --git a/Doc/library/pyclbr.rst b/Doc/library/pyclbr.rst
index 1e9876849b02f3..5efb11d89dd143 100644
--- a/Doc/library/pyclbr.rst
+++ b/Doc/library/pyclbr.rst
@@ -1,5 +1,5 @@
-:mod:`pyclbr` --- Python module browser support
-===============================================
+:mod:`!pyclbr` --- Python module browser support
+================================================
 
 .. module:: pyclbr
    :synopsis: Supports information extraction for a Python module browser.
@@ -142,7 +142,7 @@ Class Objects
 
    .. attribute:: parent
 
-      For top-level classes, None.  For nested classes, the parent.
+      For top-level classes, ``None``.  For nested classes, the parent.
 
       .. versionadded:: 3.7
 
diff --git a/Doc/library/pydoc.rst b/Doc/library/pydoc.rst
index df969b2fc7c04c..e8f153ee1b35ce 100644
--- a/Doc/library/pydoc.rst
+++ b/Doc/library/pydoc.rst
@@ -1,5 +1,5 @@
-:mod:`pydoc` --- Documentation generator and online help system
-===============================================================
+:mod:`!pydoc` --- Documentation generator and online help system
+================================================================
 
 .. module:: pydoc
    :synopsis: Documentation generator and online help system.
@@ -21,7 +21,7 @@ modules.  The documentation can be presented as pages of text on the console,
 served to a web browser, or saved to HTML files.
 
 For modules, classes, functions and methods, the displayed documentation is
-derived from the docstring (i.e. the :attr:`!__doc__` attribute) of the object,
+derived from the docstring (i.e. the :attr:`~definition.__doc__` attribute) of the object,
 and recursively of its documentable members.  If there is no docstring,
 :mod:`!pydoc` tries to obtain a description from the block of comment lines just
 above the definition of the class, function or method in the source file, or at
@@ -52,8 +52,9 @@ produced for that file.
    only execute code when a file is invoked as a script and not just imported.
 
 When printing output to the console, :program:`pydoc` attempts to paginate the
-output for easier reading.  If the :envvar:`PAGER` environment variable is set,
-:program:`pydoc` will use its value as a pagination program.
+output for easier reading.  If either the :envvar:`MANPAGER` or the
+:envvar:`PAGER` environment variable is set, :program:`pydoc` will use its
+value as a pagination program. When both are set, :envvar:`MANPAGER` is used.
 
 Specifying a ``-w`` flag before the argument will cause HTML documentation
 to be written out to a file in the current directory, instead of displaying text
diff --git a/Doc/library/pyexpat.rst b/Doc/library/pyexpat.rst
index c4b4e6319277af..c0e9999f4b1270 100644
--- a/Doc/library/pyexpat.rst
+++ b/Doc/library/pyexpat.rst
@@ -1,5 +1,5 @@
-:mod:`xml.parsers.expat` --- Fast XML parsing using Expat
-=========================================================
+:mod:`!xml.parsers.expat` --- Fast XML parsing using Expat
+==========================================================
 
 .. module:: xml.parsers.expat
    :synopsis: An interface to the Expat non-validating XML parser.
@@ -210,7 +210,7 @@ XMLParser Objects
    by default until a sufficient amount of input is reached.
    Due to this delay, registered handlers may — depending of the sizing of
    input chunks pushed to Expat — no longer be called right after pushing new
-   input to the parser.  Where immediate feedback and taking over responsiblity
+   input to the parser.  Where immediate feedback and taking over responsibility
    of protecting against denial of service from large tokens are both wanted,
    calling ``SetReparseDeferralEnabled(False)`` disables reparse deferral
    for the current Expat parser instance, temporarily or altogether.
diff --git a/Doc/library/queue.rst b/Doc/library/queue.rst
index fce23313c7de28..fbbebcf4ed8f92 100644
--- a/Doc/library/queue.rst
+++ b/Doc/library/queue.rst
@@ -1,5 +1,5 @@
-:mod:`queue` --- A synchronized queue class
-===========================================
+:mod:`!queue` --- A synchronized queue class
+============================================
 
 .. module:: queue
    :synopsis: A synchronized queue class.
diff --git a/Doc/library/quopri.rst b/Doc/library/quopri.rst
index 86717c00c3c136..977cb08d836afe 100644
--- a/Doc/library/quopri.rst
+++ b/Doc/library/quopri.rst
@@ -1,5 +1,5 @@
-:mod:`quopri` --- Encode and decode MIME quoted-printable data
-==============================================================
+:mod:`!quopri` --- Encode and decode MIME quoted-printable data
+===============================================================
 
 .. module:: quopri
    :synopsis: Encode and decode files using the MIME quoted-printable encoding.
diff --git a/Doc/library/random.rst b/Doc/library/random.rst
index 22a799c706b7e2..ef0cfb0e76cef6 100644
--- a/Doc/library/random.rst
+++ b/Doc/library/random.rst
@@ -1,5 +1,5 @@
-:mod:`random` --- Generate pseudo-random numbers
-================================================
+:mod:`!random` --- Generate pseudo-random numbers
+=================================================
 
 .. module:: random
    :synopsis: Generate pseudo-random numbers with various common distributions.
@@ -200,8 +200,8 @@ Functions for sequences
 
    For a given seed, the :func:`choices` function with equal weighting
    typically produces a different sequence than repeated calls to
-   :func:`choice`.  The algorithm used by :func:`choices` uses floating
-   point arithmetic for internal consistency and speed.  The algorithm used
+   :func:`choice`.  The algorithm used by :func:`choices` uses floating-point
+   arithmetic for internal consistency and speed.  The algorithm used
    by :func:`choice` defaults to integer arithmetic with repeated selections
    to avoid small biases from round-off error.
 
@@ -298,12 +298,12 @@ be found in any statistics text.
 
 .. function:: random()
 
-   Return the next random floating point number in the range ``0.0 <= X < 1.0``
+   Return the next random floating-point number in the range ``0.0 <= X < 1.0``
 
 
 .. function:: uniform(a, b)
 
-   Return a random floating point number *N* such that ``a <= N <= b`` for
+   Return a random floating-point number *N* such that ``a <= N <= b`` for
    ``a <= b`` and ``b <= N <= a`` for ``b < a``.
 
    The end-point value ``b`` may or may not be included in the range
@@ -313,7 +313,7 @@ be found in any statistics text.
 
 .. function:: triangular(low, high, mode)
 
-   Return a random floating point number *N* such that ``low <= N <= high`` and
+   Return a random floating-point number *N* such that ``low <= N <= high`` and
    with the specified *mode* between those bounds.  The *low* and *high* bounds
    default to zero and one.  The *mode* argument defaults to the midpoint
    between the bounds, giving a symmetric distribution.
@@ -741,7 +741,7 @@ The following options are accepted:
 .. option:: -f <N>
             --float <N>
 
-   Print a random floating point number between 1 and N inclusive,
+   Print a random floating-point number between 0 and N inclusive,
    using :meth:`uniform`.
 
 If no options are given, the output depends on the input:
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index fe7da856076819..9db6f1da3be4db 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -1,5 +1,5 @@
-:mod:`re` --- Regular expression operations
-===========================================
+:mod:`!re` --- Regular expression operations
+============================================
 
 .. module:: re
    :synopsis: Regular expression operations.
@@ -101,7 +101,7 @@ The special characters are:
 ``.``
    (Dot.)  In the default mode, this matches any character except a newline.  If
    the :const:`DOTALL` flag has been specified, this matches any character
-   including a newline.
+   including a newline.  ``(?s:.)`` matches any character regardless of flags.
 
 .. index:: single: ^ (caret); in regular expressions
 
@@ -572,6 +572,12 @@ character ``'$'``.
    Word boundaries are determined by the current locale
    if the :py:const:`~re.LOCALE` flag is used.
 
+   .. note::
+
+      Note that ``\B`` does not match an empty string, which differs from
+      RE implementations in other programming languages such as Perl.
+      This behavior is kept for compatibility reasons.
+
 .. index:: single: \d; in regular expressions
 
 ``\d``
@@ -600,10 +606,9 @@ character ``'$'``.
 
 ``\s``
    For Unicode (str) patterns:
-      Matches Unicode whitespace characters (which includes
-      ``[ \t\n\r\f\v]``, and also many other characters, for example the
-      non-breaking spaces mandated by typography rules in many
-      languages).
+      Matches Unicode whitespace characters (as defined by :py:meth:`str.isspace`).
+      This includes ``[ \t\n\r\f\v]``, and also many other characters, for example the
+      non-breaking spaces mandated by typography rules in many languages.
 
       Matches ``[ \t\n\r\f\v]`` if the :py:const:`~re.ASCII` flag is used.
 
@@ -911,6 +916,10 @@ Functions
    ``None`` if no position in the string matches the pattern; note that this is
    different from finding a zero-length match at some point in the string.
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
 
 .. function:: match(pattern, string, flags=0)
 
@@ -925,6 +934,10 @@ Functions
    If you want to locate a match anywhere in *string*, use :func:`search`
    instead (see also :ref:`search-vs-match`).
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
 
 .. function:: fullmatch(pattern, string, flags=0)
 
@@ -932,6 +945,10 @@ Functions
    corresponding :class:`~re.Match`.  Return ``None`` if the string does not match
    the pattern; note that this is different from a zero-length match.
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
    .. versionadded:: 3.4
 
 
@@ -974,6 +991,10 @@ Functions
       >>> re.split(r'(\W*)', '...words...')
       ['', '...', '', '', 'w', '', 'o', '', 'r', '', 'd', '', 's', '...', '', '', '']
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
    .. versionchanged:: 3.1
       Added the optional flags argument.
 
@@ -1004,6 +1025,10 @@ Functions
       >>> re.findall(r'(\w+)=(\d+)', 'set width=20 and height=10')
       [('width', '20'), ('height', '10')]
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
    .. versionchanged:: 3.7
       Non-empty matches can now start just after a previous empty match.
 
@@ -1015,6 +1040,10 @@ Functions
    is scanned left-to-right, and matches are returned in the order found.  Empty
    matches are included in the result.
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
    .. versionchanged:: 3.7
       Non-empty matches can now start just after a previous empty match.
 
@@ -1070,6 +1099,10 @@ Functions
    character ``'0'``.  The backreference ``\g<0>`` substitutes in the entire
    substring matched by the RE.
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
    .. versionchanged:: 3.1
       Added the optional flags argument.
 
@@ -1102,6 +1135,10 @@ Functions
    Perform the same operation as :func:`sub`, but return a tuple ``(new_string,
    number_of_subs_made)``.
 
+   The expression's behaviour can be modified by specifying a *flags* value.
+   Values can be any of the `flags`_ variables, combined using bitwise OR
+   (the ``|`` operator).
+
 
 .. function:: escape(pattern)
 
diff --git a/Doc/library/readline.rst b/Doc/library/readline.rst
index 8f8718ec51c41b..4a04205663258c 100644
--- a/Doc/library/readline.rst
+++ b/Doc/library/readline.rst
@@ -1,5 +1,5 @@
-:mod:`readline` --- GNU readline interface
-==========================================
+:mod:`!readline` --- GNU readline interface
+===========================================
 
 .. module:: readline
    :platform: Unix
@@ -24,7 +24,7 @@ in the GNU Readline manual for information about the format and
 allowable constructs of that file, and the capabilities of the
 Readline library in general.
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 .. note::
 
@@ -45,6 +45,10 @@ Readline library in general.
     python:bind -v
     python:bind ^I rl_complete
 
+  Also note that different libraries may use different history file formats.
+  When switching the underlying library, existing history files may become
+  unusable.
+
 .. data:: backend
 
    The name of the underlying Readline library being used, either
diff --git a/Doc/library/removed.rst b/Doc/library/removed.rst
new file mode 100644
index 00000000000000..4d75842eca1a03
--- /dev/null
+++ b/Doc/library/removed.rst
@@ -0,0 +1,39 @@
+:tocdepth: 1
+
+.. _removed:
+
+***************
+Removed Modules
+***************
+
+The modules described in this chapter have been removed from the Python
+standard library.  They are documented here to help people find replacements.
+
+
+.. toctree::
+   :maxdepth: 1
+
+   aifc.rst
+   asynchat.rst
+   asyncore.rst
+   audioop.rst
+   cgi.rst
+   cgitb.rst
+   chunk.rst
+   crypt.rst
+   distutils.rst
+   imghdr.rst
+   imp.rst
+   mailcap.rst
+   msilib.rst
+   nis.rst
+   nntplib.rst
+   ossaudiodev.rst
+   pipes.rst
+   smtpd.rst
+   sndhdr.rst
+   spwd.rst
+   sunau.rst
+   telnetlib.rst
+   uu.rst
+   xdrlib.rst
diff --git a/Doc/library/reprlib.rst b/Doc/library/reprlib.rst
index 678a11c6f45490..28c7855dfeeef3 100644
--- a/Doc/library/reprlib.rst
+++ b/Doc/library/reprlib.rst
@@ -1,5 +1,5 @@
-:mod:`reprlib` --- Alternate :func:`repr` implementation
-========================================================
+:mod:`!reprlib` --- Alternate :func:`repr` implementation
+=========================================================
 
 .. module:: reprlib
    :synopsis: Alternate repr() implementation with size limits.
diff --git a/Doc/library/resource.rst b/Doc/library/resource.rst
index 4fea8d5cb718c1..0515d205bbca0b 100644
--- a/Doc/library/resource.rst
+++ b/Doc/library/resource.rst
@@ -1,5 +1,5 @@
-:mod:`resource` --- Resource usage information
-==============================================
+:mod:`!resource` --- Resource usage information
+===============================================
 
 .. module:: resource
    :platform: Unix
@@ -305,7 +305,7 @@ These functions are used to retrieve resource usage information:
    elements.
 
    The fields :attr:`ru_utime` and :attr:`ru_stime` of the return value are
-   floating point values representing the amount of time spent executing in user
+   floating-point values representing the amount of time spent executing in user
    mode and the amount of time spent executing in system mode, respectively. The
    remaining values are integers. Consult the :manpage:`getrusage(2)` man page for
    detailed information about these values. A brief summary is presented here:
diff --git a/Doc/library/rlcompleter.rst b/Doc/library/rlcompleter.rst
index 8287699c5f013e..91779feb525013 100644
--- a/Doc/library/rlcompleter.rst
+++ b/Doc/library/rlcompleter.rst
@@ -1,5 +1,5 @@
-:mod:`rlcompleter` --- Completion function for GNU readline
-===========================================================
+:mod:`!rlcompleter` --- Completion function for GNU readline
+============================================================
 
 .. module:: rlcompleter
    :synopsis: Python identifier completion, suitable for the GNU readline library.
diff --git a/Doc/library/runpy.rst b/Doc/library/runpy.rst
index f2cb595f495f6b..b07ec6e93f80ab 100644
--- a/Doc/library/runpy.rst
+++ b/Doc/library/runpy.rst
@@ -1,5 +1,5 @@
-:mod:`runpy` --- Locating and executing Python modules
-======================================================
+:mod:`!runpy` --- Locating and executing Python modules
+=======================================================
 
 .. module:: runpy
    :synopsis: Locate and run Python modules without importing them first.
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst
index 4c980dd97f9394..517dbe8c321898 100644
--- a/Doc/library/sched.rst
+++ b/Doc/library/sched.rst
@@ -1,5 +1,5 @@
-:mod:`sched` --- Event scheduler
-================================
+:mod:`!sched` --- Event scheduler
+=================================
 
 .. module:: sched
    :synopsis: General purpose event scheduler.
diff --git a/Doc/library/secrets.rst b/Doc/library/secrets.rst
index 8f1a68d1d8816c..75dafc54d40ca5 100644
--- a/Doc/library/secrets.rst
+++ b/Doc/library/secrets.rst
@@ -1,5 +1,5 @@
-:mod:`secrets` --- Generate secure random numbers for managing secrets
-======================================================================
+:mod:`!secrets` --- Generate secure random numbers for managing secrets
+=======================================================================
 
 .. module:: secrets
    :synopsis: Generate secure random numbers for managing secrets.
@@ -42,17 +42,17 @@ randomness that your operating system provides.
    sources provided by the operating system.  See
    :class:`random.SystemRandom` for additional details.
 
-.. function:: choice(sequence)
+.. function:: choice(seq)
 
    Return a randomly chosen element from a non-empty sequence.
 
-.. function:: randbelow(n)
+.. function:: randbelow(exclusive_upper_bound)
 
-   Return a random int in the range [0, *n*).
+   Return a random int in the range [0, *exclusive_upper_bound*).
 
 .. function:: randbits(k)
 
-   Return an int with *k* random bits.
+   Return a non-negative int with *k* random bits.
 
 
 Generating tokens
diff --git a/Doc/library/select.rst b/Doc/library/select.rst
index a0058046d0ce4c..f23a249f44b485 100644
--- a/Doc/library/select.rst
+++ b/Doc/library/select.rst
@@ -1,5 +1,5 @@
-:mod:`select` --- Waiting for I/O completion
-============================================
+:mod:`!select` --- Waiting for I/O completion
+=============================================
 
 .. module:: select
    :synopsis: Wait for I/O completion on multiple streams.
@@ -129,7 +129,7 @@ The module defines the following:
 
    Empty iterables are allowed, but acceptance of three empty iterables is
    platform-dependent. (It is known to work on Unix but not on Windows.)  The
-   optional *timeout* argument specifies a time-out as a floating point number
+   optional *timeout* argument specifies a time-out as a floating-point number
    in seconds.  When the *timeout* argument is omitted the function blocks until
    at least one file descriptor is ready.  A time-out value of zero specifies a
    poll and never blocks.
diff --git a/Doc/library/selectors.rst b/Doc/library/selectors.rst
index 76cbf91412f763..de8c3ef0ea2275 100644
--- a/Doc/library/selectors.rst
+++ b/Doc/library/selectors.rst
@@ -1,5 +1,5 @@
-:mod:`selectors` --- High-level I/O multiplexing
-================================================
+:mod:`!selectors` --- High-level I/O multiplexing
+=================================================
 
 .. module:: selectors
    :synopsis: High-level I/O multiplexing.
diff --git a/Doc/library/shelve.rst b/Doc/library/shelve.rst
index 1fa614f6584170..6e74a59b82b8ec 100644
--- a/Doc/library/shelve.rst
+++ b/Doc/library/shelve.rst
@@ -1,5 +1,5 @@
-:mod:`shelve` --- Python object persistence
-===========================================
+:mod:`!shelve` --- Python object persistence
+============================================
 
 .. module:: shelve
    :synopsis: Python object persistence.
diff --git a/Doc/library/shlex.rst b/Doc/library/shlex.rst
index 716420f5e74ffa..a96f0864dc1260 100644
--- a/Doc/library/shlex.rst
+++ b/Doc/library/shlex.rst
@@ -1,5 +1,5 @@
-:mod:`shlex` --- Simple lexical analysis
-========================================
+:mod:`!shlex` --- Simple lexical analysis
+=========================================
 
 .. module:: shlex
    :synopsis: Simple lexical analysis for Unix shell-like languages.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 331acfce3afee3..5b5b9ee69b3167 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -1,5 +1,5 @@
-:mod:`shutil` --- High-level file operations
-============================================
+:mod:`!shutil` --- High-level file operations
+=============================================
 
 .. module:: shutil
    :synopsis: High-level file operations, including copying.
@@ -338,7 +338,7 @@ Directory and files operations
       before removing the junction.
 
    .. versionchanged:: 3.11
-      The *dir_fd* parameter.
+      Added the *dir_fd* parameter.
 
    .. versionchanged:: 3.12
       Added the *onexc* parameter, deprecated *onerror*.
@@ -449,9 +449,10 @@ Directory and files operations
    *mode* is a permission mask passed to :func:`os.access`, by default
    determining if the file exists and is executable.
 
-   *path* is a "``PATH`` string" specifying the lookup directory list. When no
-   *path* is specified, the results of :func:`os.environ` are used, returning
-   either the "PATH" value or a fallback of :data:`os.defpath`.
+   *path* is a "``PATH`` string" specifying the directories to look in,
+   delimited by :data:`os.pathsep`. When no *path* is specified, the
+   :envvar:`PATH` environment variable is read from :data:`os.environ`,
+   falling back to :data:`os.defpath` if it is not set.
 
    On Windows, the current directory is prepended to the *path* if *mode* does
    not include ``os.X_OK``. When the *mode* does include ``os.X_OK``, the
@@ -460,9 +461,9 @@ Directory and files operations
    consulting the current working directory for executables: set the environment
    variable ``NoDefaultCurrentDirectoryInExePath``.
 
-   Also on Windows, the ``PATHEXT`` variable is used to resolve commands
-   that may not already include an extension. For example, if you call
-   ``shutil.which("python")``, :func:`which` will search ``PATHEXT``
+   Also on Windows, the :envvar:`PATHEXT` environment variable is used to
+   resolve commands that may not already include an extension. For example,
+   if you call ``shutil.which("python")``, :func:`which` will search ``PATHEXT``
    to know that it should look for ``python.exe`` within the *path*
    directories. For example, on Windows::
 
@@ -490,12 +491,6 @@ Directory and files operations
       or ends with an extension that is in ``PATHEXT``; and filenames that
       have no extension can now be found.
 
-   .. versionchanged:: 3.12.1
-      On Windows, if *mode* includes ``os.X_OK``, executables with an
-      extension in ``PATHEXT`` will be preferred over executables without a
-      matching extension.
-      This brings behavior closer to that of Python 3.11.
-
 .. exception:: Error
 
    This exception collects exceptions that are raised during a multi-file
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 05ef45c123b02e..17fcb2b3707978 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -1,5 +1,5 @@
-:mod:`signal` --- Set handlers for asynchronous events
-======================================================
+:mod:`!signal` --- Set handlers for asynchronous events
+=======================================================
 
 .. module:: signal
    :synopsis: Set handlers for asynchronous events.
@@ -411,7 +411,7 @@ The :mod:`signal` module defines the following functions:
 
    See the :manpage:`pidfd_send_signal(2)` man page for more information.
 
-   .. availability:: Linux >= 5.1
+   .. availability:: Linux >= 5.1, Android >= :func:`build-time <sys.getandroidapilevel>` API level 31
    .. versionadded:: 3.9
 
 
@@ -425,7 +425,7 @@ The :mod:`signal` module defines the following functions:
    signal to a particular Python thread would be to force a running system call
    to fail with :exc:`InterruptedError`.
 
-   Use :func:`threading.get_ident()` or the :attr:`~threading.Thread.ident`
+   Use :func:`threading.get_ident` or the :attr:`~threading.Thread.ident`
    attribute of :class:`threading.Thread` objects to get a suitable value
    for *thread_id*.
 
diff --git a/Doc/library/site.rst b/Doc/library/site.rst
index e52bbd32d4d493..4508091f679dc7 100644
--- a/Doc/library/site.rst
+++ b/Doc/library/site.rst
@@ -1,5 +1,5 @@
-:mod:`site` --- Site-specific configuration hook
-================================================
+:mod:`!site` --- Site-specific configuration hook
+=================================================
 
 .. module:: site
    :synopsis: Module responsible for site-specific configuration.
@@ -15,8 +15,9 @@ import can be suppressed using the interpreter's :option:`-S` option.
 
 .. index:: triple: module; search; path
 
-Importing this module will append site-specific paths to the module search path
-and add a few builtins, unless :option:`-S` was used.  In that case, this module
+Importing this module normally appends site-specific paths to the module search path
+and adds :ref:`callables <site-consts>`, including :func:`help` to the built-in
+namespace. However, Python startup option :option:`-S` blocks this and this module
 can be safely imported with no automatic modifications to the module search path
 or additions to the builtins.  To explicitly trigger the usual site-specific
 additions, call the :func:`main` function.
@@ -32,7 +33,10 @@ It starts by constructing up to four directories from a head and a tail part.
 For the head part, it uses ``sys.prefix`` and ``sys.exec_prefix``; empty heads
 are skipped.  For the tail part, it uses the empty string and then
 :file:`lib/site-packages` (on Windows) or
-:file:`lib/python{X.Y}/site-packages` (on Unix and macOS).  For each
+:file:`lib/python{X.Y[t]}/site-packages` (on Unix and macOS). (The
+optional suffix "t" indicates the :term:`free threading` build, and is
+appended if ``"t"`` is present in the :attr:`sys.abiflags` constant.)
+For each
 of the distinct head-tail combinations, it sees if it refers to an existing
 directory, and if so, adds it to ``sys.path`` and also inspects the newly
 added path for configuration files.
@@ -40,6 +44,11 @@ added path for configuration files.
 .. versionchanged:: 3.5
    Support for the "site-python" directory has been removed.
 
+.. versionchanged:: 3.13
+   On Unix, :term:`Free threading <free threading>` Python installations are
+   identified by the "t" suffix in the version-specific directory name, such as
+   :file:`lib/python3.13t/`.
+
 If a file named "pyvenv.cfg" exists one directory above sys.executable,
 sys.prefix and sys.exec_prefix are set to that directory and
 it is also checked for site-packages (sys.base_prefix and
@@ -188,11 +197,12 @@ Module contents
 
    Path to the user site-packages for the running Python.  Can be ``None`` if
    :func:`getusersitepackages` hasn't been called yet.  Default value is
-   :file:`~/.local/lib/python{X.Y}/site-packages` for UNIX and non-framework
+   :file:`~/.local/lib/python{X.Y}[t]/site-packages` for UNIX and non-framework
    macOS builds, :file:`~/Library/Python/{X.Y}/lib/python/site-packages` for macOS
    framework builds, and :file:`{%APPDATA%}\\Python\\Python{XY}\\site-packages`
-   on Windows.  This directory is a site directory, which means that
-   :file:`.pth` files in it will be processed.
+   on Windows.  The optional "t" indicates the free-threaded build.  This
+   directory is a site directory, which means that :file:`.pth` files in it
+   will be processed.
 
 
 .. data:: USER_BASE
diff --git a/Doc/library/smtpd.rst b/Doc/library/smtpd.rst
new file mode 100644
index 00000000000000..c704f4a241b469
--- /dev/null
+++ b/Doc/library/smtpd.rst
@@ -0,0 +1,18 @@
+:mod:`!smtpd` --- SMTP Server
+=============================
+
+.. module:: smtpd
+   :synopsis: Removed in 3.12.
+   :deprecated:
+
+.. deprecated-removed:: 3.6 3.12
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.12 <whatsnew312-removed>` after
+being deprecated in Python 3.6.  The removal was decided in :pep:`594`.
+
+A possible replacement is the third-party :pypi:`aiosmtpd` library. This
+library is not maintained or supported by the Python core team.
+
+The last version of Python that provided the :mod:`!smtpd` module was
+`Python 3.11 <https://docs.python.org/3.11/library/smtpd.html>`_.
diff --git a/Doc/library/smtplib.rst b/Doc/library/smtplib.rst
index aaec2aa1ef1dbe..7cd530a5fd6438 100644
--- a/Doc/library/smtplib.rst
+++ b/Doc/library/smtplib.rst
@@ -1,5 +1,5 @@
-:mod:`smtplib` --- SMTP protocol client
-=======================================
+:mod:`!smtplib` --- SMTP protocol client
+========================================
 
 .. module:: smtplib
    :synopsis: SMTP protocol client (requires sockets).
@@ -556,34 +556,33 @@ This example prompts the user for addresses needed in the message envelope ('To'
 and 'From' addresses), and the message to be delivered.  Note that the headers
 to be included with the message must be included in the message as entered; this
 example doesn't do any processing of the :rfc:`822` headers.  In particular, the
-'To' and 'From' addresses must be included in the message headers explicitly. ::
+'To' and 'From' addresses must be included in the message headers explicitly::
 
    import smtplib
 
-   def prompt(prompt):
-       return input(prompt).strip()
+   def prompt(title):
+       return input(title).strip()
 
-   fromaddr = prompt("From: ")
-   toaddrs  = prompt("To: ").split()
+   from_addr = prompt("From: ")
+   to_addrs  = prompt("To: ").split()
    print("Enter message, end with ^D (Unix) or ^Z (Windows):")
 
    # Add the From: and To: headers at the start!
-   msg = ("From: %s\r\nTo: %s\r\n\r\n"
-          % (fromaddr, ", ".join(toaddrs)))
+   lines = [f"From: {from_addr}", f"To: {', '.join(to_addrs)}", ""]
    while True:
        try:
            line = input()
        except EOFError:
            break
-       if not line:
-           break
-       msg = msg + line
+       else:
+           lines.append(line)
 
+   msg = "\r\n".join(lines)
    print("Message length is", len(msg))
 
-   server = smtplib.SMTP('localhost')
+   server = smtplib.SMTP("localhost")
    server.set_debuglevel(1)
-   server.sendmail(fromaddr, toaddrs, msg)
+   server.sendmail(from_addr, to_addrs, msg)
    server.quit()
 
 .. note::
diff --git a/Doc/library/sndhdr.rst b/Doc/library/sndhdr.rst
new file mode 100644
index 00000000000000..6b71db4f6338a8
--- /dev/null
+++ b/Doc/library/sndhdr.rst
@@ -0,0 +1,19 @@
+:mod:`!sndhdr` --- Determine type of sound file
+===============================================
+
+.. module:: sndhdr
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+Possible replacements are third-party modules from PyPI:
+:pypi:`filetype`, :pypi:`puremagic`, or :pypi:`python-magic`.
+These are not supported or maintained by the Python core team.
+
+The last version of Python that provided the :mod:`!sndhdr` module was
+`Python 3.12 <https://docs.python.org/3.12/library/sndhdr.html>`_.
diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index 76af783c6292f9..9ae0185588f493 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -1,5 +1,5 @@
-:mod:`socket` --- Low-level networking interface
-================================================
+:mod:`!socket` --- Low-level networking interface
+=================================================
 
 .. module:: socket
    :synopsis: Low-level networking interface.
@@ -700,6 +700,13 @@ Constants
 
    .. versionadded:: 3.12
 
+.. data:: SHUT_RD
+          SHUT_WR
+          SHUT_RDWR
+
+   These constants are used by the :meth:`~socket.socket.shutdown` method of socket objects.
+
+   .. availability:: not WASI.
 
 Functions
 ^^^^^^^^^
@@ -729,7 +736,7 @@ The following functions all create :ref:`socket objects <socket-objects>`.
    of :meth:`socket.getpeername` but not the actual OS resource.  Unlike
    :func:`socket.fromfd`, *fileno* will return the same socket and not a
    duplicate. This may help close a detached socket using
-   :meth:`socket.close()`.
+   :meth:`socket.close`.
 
    The newly created socket is :ref:`non-inheritable <fd_inheritance>`.
 
@@ -913,7 +920,9 @@ The :mod:`socket` module also offers various network-related services:
 
    .. versionadded:: 3.7
 
-.. function:: getaddrinfo(host, port, family=0, type=0, proto=0, flags=0)
+.. function:: getaddrinfo(host, port, family=AF_UNSPEC, type=0, proto=0, flags=0)
+
+   This function wraps the C function ``getaddrinfo`` of the underlying system.
 
    Translate the *host*/*port* argument into a sequence of 5-tuples that contain
    all the necessary arguments for creating a socket connected to that service.
@@ -923,8 +932,10 @@ The :mod:`socket` module also offers various network-related services:
    and *port*, you can pass ``NULL`` to the underlying C API.
 
    The *family*, *type* and *proto* arguments can be optionally specified
-   in order to narrow the list of addresses returned.  Passing zero as a
-   value for each of these arguments selects the full range of results.
+   in order to provide options and limit the list of addresses returned.
+   Pass their default values (:data:`AF_UNSPEC`, 0, and 0, respectively)
+   to not limit the results. See the note below for details.
+
    The *flags* argument can be one or several of the ``AI_*`` constants,
    and will influence how results are computed and returned.
    For example, :const:`AI_NUMERICHOST` will disable domain name resolution
@@ -944,6 +955,29 @@ The :mod:`socket` module also offers various network-related services:
    :const:`AF_INET6`), and is meant to be passed to the :meth:`socket.connect`
    method.
 
+   .. note::
+
+      If you intend to use results from :func:`!getaddrinfo` to create a socket
+      (rather than, for example, retrieve *canonname*),
+      consider limiting the results by *type* (e.g. :data:`SOCK_STREAM` or
+      :data:`SOCK_DGRAM`) and/or *proto* (e.g. :data:`IPPROTO_TCP` or
+      :data:`IPPROTO_UDP`) that your application can handle.
+
+      The behavior with default values of *family*, *type*, *proto*
+      and *flags* is system-specific.
+
+      Many systems (for example, most Linux configurations) will return a sorted
+      list of all matching addresses.
+      These addresses should generally be tried in order until a connection succeeds
+      (possibly tried in parallel, for example, using a `Happy Eyeballs`_ algorithm).
+      In these cases, limiting the *type* and/or *proto* can help eliminate
+      unsuccessful or unusable connection attempts.
+
+      Some systems will, however, only return a single address.
+      (For example, this was reported on Solaris and AIX configurations.)
+      On these systems, limiting the *type* and/or *proto* helps ensure that
+      this address is usable.
+
    .. audit-event:: socket.getaddrinfo host,port,family,type,protocol socket.getaddrinfo
 
    The following example fetches address information for a hypothetical TCP
@@ -963,6 +997,8 @@ The :mod:`socket` module also offers various network-related services:
       for IPv6 multicast addresses, string representing an address will not
       contain ``%scope_id`` part.
 
+.. _Happy Eyeballs: https://en.wikipedia.org/wiki/Happy_Eyeballs
+
 .. function:: getfqdn([name])
 
    Return a fully qualified domain name for *name*. If *name* is omitted or empty,
@@ -1265,7 +1301,7 @@ The :mod:`socket` module also offers various network-related services:
 
    .. audit-event:: socket.sethostname name socket.sethostname
 
-   .. availability:: Unix.
+   .. availability:: Unix, not Android.
 
    .. versionadded:: 3.3
 
@@ -1408,7 +1444,7 @@ to sockets.
 .. method:: socket.close()
 
    Mark the socket closed.  The underlying system resource (e.g. a file
-   descriptor) is also closed when all file objects from :meth:`makefile()`
+   descriptor) is also closed when all file objects from :meth:`makefile`
    are closed.  Once that happens, all future operations on the socket
    object will fail. The remote end will receive no more data (after
    queued data is flushed).
@@ -1423,10 +1459,10 @@ to sockets.
 
    .. note::
 
-      :meth:`close()` releases the resource associated with a connection but
+      :meth:`close` releases the resource associated with a connection but
       does not necessarily close the connection immediately.  If you want
-      to close the connection in a timely fashion, call :meth:`shutdown()`
-      before :meth:`close()`.
+      to close the connection in a timely fashion, call :meth:`shutdown`
+      before :meth:`close`.
 
 
 .. method:: socket.connect(address)
@@ -1589,7 +1625,8 @@ to sockets.
    Return a :term:`file object` associated with the socket.  The exact returned
    type depends on the arguments given to :meth:`makefile`.  These arguments are
    interpreted the same way as by the built-in :func:`open` function, except
-   the only supported *mode* values are ``'r'`` (default), ``'w'`` and ``'b'``.
+   the only supported *mode* values are ``'r'`` (default), ``'w'``, ``'b'``, or
+   a combination of those.
 
    The socket must be in blocking mode; it can have a timeout, but the file
    object's internal buffer may end up in an inconsistent state if a timeout
@@ -1921,7 +1958,7 @@ to sockets.
 .. method:: socket.settimeout(value)
 
    Set a timeout on blocking socket operations.  The *value* argument can be a
-   nonnegative floating point number expressing seconds, or ``None``.
+   nonnegative floating-point number expressing seconds, or ``None``.
    If a non-zero value is given, subsequent socket operations will raise a
    :exc:`timeout` exception if the timeout period *value* has elapsed before
    the operation has completed.  If zero is given, the socket is put in
@@ -2034,7 +2071,7 @@ can be changed by calling :func:`setdefaulttimeout`.
    in non-blocking mode.  Also, the blocking and timeout modes are shared between
    file descriptors and socket objects that refer to the same network endpoint.
    This implementation detail can have visible consequences if e.g. you decide
-   to use the :meth:`~socket.fileno()` of a socket.
+   to use the :meth:`~socket.fileno` of a socket.
 
 Timeouts and the ``connect`` method
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/Doc/library/socketserver.rst b/Doc/library/socketserver.rst
index 864b1dadb78562..f1f87ea975ca42 100644
--- a/Doc/library/socketserver.rst
+++ b/Doc/library/socketserver.rst
@@ -1,5 +1,5 @@
-:mod:`socketserver` --- A framework for network servers
-=======================================================
+:mod:`!socketserver` --- A framework for network servers
+========================================================
 
 .. module:: socketserver
    :synopsis: A framework for network servers.
diff --git a/Doc/library/spwd.rst b/Doc/library/spwd.rst
new file mode 100644
index 00000000000000..c16854bb380e52
--- /dev/null
+++ b/Doc/library/spwd.rst
@@ -0,0 +1,18 @@
+:mod:`!spwd` --- The shadow password database
+=============================================
+
+.. module:: spwd
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+A possible replacement is the third-party library :pypi:`python-pam`.
+This library is not supported or maintained by the Python core team.
+
+The last version of Python that provided the :mod:`!spwd` module was
+`Python 3.12 <https://docs.python.org/3.12/library/spwd.html>`_.
diff --git a/Doc/library/sqlite3.rst b/Doc/library/sqlite3.rst
index e6961821b639b9..0d2004497882e2 100644
--- a/Doc/library/sqlite3.rst
+++ b/Doc/library/sqlite3.rst
@@ -1,5 +1,5 @@
-:mod:`sqlite3` --- DB-API 2.0 interface for SQLite databases
-============================================================
+:mod:`!sqlite3` --- DB-API 2.0 interface for SQLite databases
+=============================================================
 
 .. module:: sqlite3
    :synopsis: A DB-API 2.0 implementation using SQLite 3.x.
@@ -127,7 +127,7 @@ and call :meth:`res.fetchone() <Cursor.fetchone>` to fetch the resulting row:
 We can see that the table has been created,
 as the query returns a :class:`tuple` containing the table's name.
 If we query ``sqlite_master`` for a non-existent table ``spam``,
-:meth:`!res.fetchone()` will return ``None``:
+:meth:`!res.fetchone` will return ``None``:
 
 .. doctest::
 
@@ -525,21 +525,20 @@ Module constants
    The mappings from SQLite threading modes to DB-API 2.0 threadsafety levels
    are as follows:
 
-   +------------------+-----------------+----------------------+-------------------------------+
-   | SQLite threading | `threadsafety`_ | `SQLITE_THREADSAFE`_ | DB-API 2.0 meaning            |
-   | mode             |                 |                      |                               |
-   +==================+=================+======================+===============================+
-   | single-thread    | 0               | 0                    | Threads may not share the     |
-   |                  |                 |                      | module                        |
-   +------------------+-----------------+----------------------+-------------------------------+
-   | multi-thread     | 1               | 2                    | Threads may share the module, |
-   |                  |                 |                      | but not connections           |
-   +------------------+-----------------+----------------------+-------------------------------+
-   | serialized       | 3               | 1                    | Threads may share the module, |
-   |                  |                 |                      | connections and cursors       |
-   +------------------+-----------------+----------------------+-------------------------------+
-
-   .. _threadsafety: https://peps.python.org/pep-0249/#threadsafety
+   +------------------+----------------------+----------------------+-------------------------------+
+   | SQLite threading | :pep:`threadsafety   | `SQLITE_THREADSAFE`_ | DB-API 2.0 meaning            |
+   | mode             | <0249#threadsafety>` |                      |                               |
+   +==================+======================+======================+===============================+
+   | single-thread    | 0                    | 0                    | Threads may not share the     |
+   |                  |                      |                      | module                        |
+   +------------------+----------------------+----------------------+-------------------------------+
+   | multi-thread     | 1                    | 2                    | Threads may share the module, |
+   |                  |                      |                      | but not connections           |
+   +------------------+----------------------+----------------------+-------------------------------+
+   | serialized       | 3                    | 1                    | Threads may share the module, |
+   |                  |                      |                      | connections and cursors       |
+   +------------------+----------------------+----------------------+-------------------------------+
+
    .. _SQLITE_THREADSAFE: https://sqlite.org/compile.html#threadsafe
 
    .. versionchanged:: 3.11
@@ -2461,6 +2460,7 @@ Some useful URI tricks include:
    >>> con.execute("CREATE TABLE readonly(data)")
    Traceback (most recent call last):
    OperationalError: attempt to write a readonly database
+   >>> con.close()
 
 * Do not implicitly create a new database file if it does not already exist;
   will raise :exc:`~sqlite3.OperationalError` if unable to create a new file:
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst
index a90436286ca819..f07d151a885692 100644
--- a/Doc/library/ssl.rst
+++ b/Doc/library/ssl.rst
@@ -1,5 +1,5 @@
-:mod:`ssl` --- TLS/SSL wrapper for socket objects
-=================================================
+:mod:`!ssl` --- TLS/SSL wrapper for socket objects
+==================================================
 
 .. module:: ssl
    :synopsis: TLS/SSL wrapper for socket objects
@@ -781,7 +781,7 @@ Constants
 
 .. data:: OP_SINGLE_DH_USE
 
-   Prevents re-use of the same DH key for distinct SSL sessions.  This
+   Prevents reuse of the same DH key for distinct SSL sessions.  This
    improves forward secrecy but requires more computational resources.
    This option only applies to server sockets.
 
@@ -789,7 +789,7 @@ Constants
 
 .. data:: OP_SINGLE_ECDH_USE
 
-   Prevents re-use of the same ECDH key for distinct SSL sessions.  This
+   Prevents reuse of the same ECDH key for distinct SSL sessions.  This
    improves forward secrecy but requires more computational resources.
    This option only applies to server sockets.
 
@@ -1049,25 +1049,25 @@ SSL Sockets
 
    SSL sockets provide the following methods of :ref:`socket-objects`:
 
-   - :meth:`~socket.socket.accept()`
-   - :meth:`~socket.socket.bind()`
-   - :meth:`~socket.socket.close()`
-   - :meth:`~socket.socket.connect()`
-   - :meth:`~socket.socket.detach()`
-   - :meth:`~socket.socket.fileno()`
-   - :meth:`~socket.socket.getpeername()`, :meth:`~socket.socket.getsockname()`
-   - :meth:`~socket.socket.getsockopt()`, :meth:`~socket.socket.setsockopt()`
-   - :meth:`~socket.socket.gettimeout()`, :meth:`~socket.socket.settimeout()`,
-     :meth:`~socket.socket.setblocking()`
-   - :meth:`~socket.socket.listen()`
-   - :meth:`~socket.socket.makefile()`
-   - :meth:`~socket.socket.recv()`, :meth:`~socket.socket.recv_into()`
+   - :meth:`~socket.socket.accept`
+   - :meth:`~socket.socket.bind`
+   - :meth:`~socket.socket.close`
+   - :meth:`~socket.socket.connect`
+   - :meth:`~socket.socket.detach`
+   - :meth:`~socket.socket.fileno`
+   - :meth:`~socket.socket.getpeername`, :meth:`~socket.socket.getsockname`
+   - :meth:`~socket.socket.getsockopt`, :meth:`~socket.socket.setsockopt`
+   - :meth:`~socket.socket.gettimeout`, :meth:`~socket.socket.settimeout`,
+     :meth:`~socket.socket.setblocking`
+   - :meth:`~socket.socket.listen`
+   - :meth:`~socket.socket.makefile`
+   - :meth:`~socket.socket.recv`, :meth:`~socket.socket.recv_into`
      (but passing a non-zero ``flags`` argument is not allowed)
-   - :meth:`~socket.socket.send()`, :meth:`~socket.socket.sendall()` (with
+   - :meth:`~socket.socket.send`, :meth:`~socket.socket.sendall` (with
      the same limitation)
-   - :meth:`~socket.socket.sendfile()` (but :mod:`os.sendfile` will be used
-     for plain-text sockets only, else :meth:`~socket.socket.send()` will be used)
-   - :meth:`~socket.socket.shutdown()`
+   - :meth:`~socket.socket.sendfile` (but :mod:`os.sendfile` will be used
+     for plain-text sockets only, else :meth:`~socket.socket.send` will be used)
+   - :meth:`~socket.socket.shutdown`
 
    However, since the SSL (and TLS) protocol has its own framing atop
    of TCP, the SSL sockets abstraction can, in certain respects, diverge from
@@ -1472,6 +1472,19 @@ to speed up repeated connections from the same clients.
       :data:`PROTOCOL_TLS`, :data:`PROTOCOL_TLS_CLIENT`, and
       :data:`PROTOCOL_TLS_SERVER` use TLS 1.2 as minimum TLS version.
 
+   .. note::
+
+      :class:`SSLContext` only supports limited mutation once it has been used
+      by a connection. Adding new certificates to the internal trust store is
+      allowed, but changing ciphers, verification settings, or mTLS
+      certificates may result in surprising behavior.
+
+   .. note::
+
+      :class:`SSLContext` is designed to be shared and used by multiple
+      connections.
+      Thus, it is thread-safe as long as it is not reconfigured after being
+      used by a connection.
 
 :class:`SSLContext` objects have the following methods and attributes:
 
@@ -1553,7 +1566,7 @@ to speed up repeated connections from the same clients.
    The *capath* string, if present, is
    the path to a directory containing several CA certificates in PEM format,
    following an `OpenSSL specific layout
-   <https://www.openssl.org/docs/manmaster/man3/SSL_CTX_load_verify_locations.html>`_.
+   <https://docs.openssl.org/master/man3/SSL_CTX_load_verify_locations/>`_.
 
    The *cadata* object, if present, is either an ASCII string of one or more
    PEM-encoded certificates or a :term:`bytes-like object` of DER-encoded
@@ -1628,7 +1641,7 @@ to speed up repeated connections from the same clients.
 
    Set the available ciphers for sockets created with this context.
    It should be a string in the `OpenSSL cipher list format
-   <https://www.openssl.org/docs/manmaster/man1/ciphers.html>`_.
+   <https://docs.openssl.org/master/man1/ciphers/>`_.
    If no cipher can be selected (because compile-time options or other
    configuration forbids use of all the specified ciphers), an
    :class:`SSLError` will be raised.
@@ -1729,7 +1742,7 @@ to speed up repeated connections from the same clients.
    IDN-encoded internationalized domain name, the *server_name_callback*
    receives a decoded U-label (``"pythön.org"``).
 
-   If there is an decoding error on the server name, the TLS connection will
+   If there is a decoding error on the server name, the TLS connection will
    terminate with an :const:`ALERT_DESCRIPTION_INTERNAL_ERROR` fatal TLS
    alert message to the client.
 
@@ -1861,7 +1874,7 @@ to speed up repeated connections from the same clients.
 .. method:: SSLContext.session_stats()
 
    Get statistics about the SSL sessions created or managed by this context.
-   A dictionary is returned which maps the names of each `piece of information <https://www.openssl.org/docs/man1.1.1/man3/SSL_CTX_sess_number.html>`_ to their
+   A dictionary is returned which maps the names of each `piece of information <https://docs.openssl.org/1.1.1/man3/SSL_CTX_sess_number/>`_ to their
    numeric values.  For example, here is the total number of hits and misses
    in the session cache since the context was created::
 
@@ -2004,7 +2017,7 @@ to speed up repeated connections from the same clients.
 .. attribute:: SSLContext.security_level
 
    An integer representing the `security level
-   <https://www.openssl.org/docs/manmaster/man3/SSL_CTX_get_security_level.html>`_
+   <https://docs.openssl.org/master/man3/SSL_CTX_get_security_level/>`_
    for the context. This attribute is read-only.
 
    .. versionadded:: 3.10
@@ -2495,8 +2508,8 @@ thus several things you need to be aware of:
 .. seealso::
 
    The :mod:`asyncio` module supports :ref:`non-blocking SSL sockets
-   <ssl-nonblocking>` and provides a
-   higher level API. It polls for events using the :mod:`selectors` module and
+   <ssl-nonblocking>` and provides a higher level :ref:`Streams API <asyncio-streams>`.
+   It polls for events using the :mod:`selectors` module and
    handles :exc:`SSLWantWriteError`, :exc:`SSLWantReadError` and
    :exc:`BlockingIOError` exceptions. It runs the SSL handshake asynchronously
    as well.
@@ -2697,7 +2710,7 @@ Verifying certificates
 
 When calling the :class:`SSLContext` constructor directly,
 :const:`CERT_NONE` is the default.  Since it does not authenticate the other
-peer, it can be insecure, especially in client mode where most of time you
+peer, it can be insecure, especially in client mode where most of the time you
 would like to ensure the authenticity of the server you're talking to.
 Therefore, when in client mode, it is highly recommended to use
 :const:`CERT_REQUIRED`.  However, it is in itself not sufficient; you also
@@ -2746,7 +2759,7 @@ enabled when negotiating a SSL session is possible through the
 :meth:`SSLContext.set_ciphers` method.  Starting from Python 3.2.3, the
 ssl module disables certain weak ciphers by default, but you may want
 to further restrict the cipher choice. Be sure to read OpenSSL's documentation
-about the `cipher list format <https://www.openssl.org/docs/man1.1.1/man1/ciphers.html#CIPHER-LIST-FORMAT>`_.
+about the `cipher list format <https://docs.openssl.org/1.1.1/man1/ciphers/#cipher-list-format>`_.
 If you want to check which ciphers are enabled by a given cipher list, use
 :meth:`SSLContext.get_ciphers` or the ``openssl ciphers`` command on your
 system.
diff --git a/Doc/library/stat.rst b/Doc/library/stat.rst
index f7a3b7b16fe5c3..8434b2e8c75cf4 100644
--- a/Doc/library/stat.rst
+++ b/Doc/library/stat.rst
@@ -1,5 +1,5 @@
-:mod:`stat` --- Interpreting :func:`~os.stat` results
-=====================================================
+:mod:`!stat` --- Interpreting :func:`~os.stat` results
+======================================================
 
 .. module:: stat
    :synopsis: Utilities for interpreting the results of os.stat(),
diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
index d5a316e45ee3e2..614f5b905a4a2e 100644
--- a/Doc/library/statistics.rst
+++ b/Doc/library/statistics.rst
@@ -1,5 +1,5 @@
-:mod:`statistics` --- Mathematical statistics functions
-=======================================================
+:mod:`!statistics` --- Mathematical statistics functions
+========================================================
 
 .. module:: statistics
    :synopsis: Mathematical statistics functions
@@ -73,7 +73,7 @@ or sample.
 
 =======================  ===============================================================
 :func:`mean`             Arithmetic mean ("average") of data.
-:func:`fmean`            Fast, floating point arithmetic mean, with optional weighting.
+:func:`fmean`            Fast, floating-point arithmetic mean, with optional weighting.
 :func:`geometric_mean`   Geometric mean of data.
 :func:`harmonic_mean`    Harmonic mean of data.
 :func:`kde`              Estimate the probability density distribution of the data.
@@ -220,7 +220,7 @@ However, for reading convenience, most of the examples show sorted sequences.
 .. function:: harmonic_mean(data, weights=None)
 
    Return the harmonic mean of *data*, a sequence or iterable of
-   real-valued numbers.  If *weights* is omitted or *None*, then
+   real-valued numbers.  If *weights* is omitted or ``None``, then
    equal weighting is assumed.
 
    The harmonic mean is the reciprocal of the arithmetic :func:`mean` of the
@@ -485,6 +485,12 @@ However, for reading convenience, most of the examples show sorted sequences.
       >>> mode(["red", "blue", "blue", "red", "green", "red", "red"])
       'red'
 
+   Only hashable inputs are supported.  To handle type :class:`set`,
+   consider casting to :class:`frozenset`.  To handle type :class:`list`,
+   consider casting to :class:`tuple`.  For mixed or nested inputs, consider
+   using this slower quadratic algorithm that only depends on equality tests:
+   ``max(data, key=data.count)``.
+
    .. versionchanged:: 3.8
       Now handles multimodal datasets by returning the first mode encountered.
       Formerly, it raised :exc:`StatisticsError` when more than one mode was
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 8f5f9ee519a573..b5ba8060cb45a1 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -209,18 +209,18 @@ Numeric Types --- :class:`int`, :class:`float`, :class:`complex`
    pair: object; numeric
    pair: object; Boolean
    pair: object; integer
-   pair: object; floating point
+   pair: object; floating-point
    pair: object; complex number
    pair: C; language
 
-There are three distinct numeric types: :dfn:`integers`, :dfn:`floating
-point numbers`, and :dfn:`complex numbers`.  In addition, Booleans are a
-subtype of integers.  Integers have unlimited precision.  Floating point
+There are three distinct numeric types: :dfn:`integers`, :dfn:`floating-point
+numbers`, and :dfn:`complex numbers`.  In addition, Booleans are a
+subtype of integers.  Integers have unlimited precision.  Floating-point
 numbers are usually implemented using :c:expr:`double` in C; information
-about the precision and internal representation of floating point
+about the precision and internal representation of floating-point
 numbers for the machine on which your program is running is available
 in :data:`sys.float_info`.  Complex numbers have a real and imaginary
-part, which are each a floating point number.  To extract these parts
+part, which are each a floating-point number.  To extract these parts
 from a complex number *z*, use ``z.real`` and ``z.imag``. (The standard
 library includes the additional numeric types :mod:`fractions.Fraction`, for
 rationals, and :mod:`decimal.Decimal`, for floating-point numbers with
@@ -229,7 +229,7 @@ user-definable precision.)
 .. index::
    pair: numeric; literals
    pair: integer; literals
-   pair: floating point; literals
+   pair: floating-point; literals
    pair: complex number; literals
    pair: hexadecimal; literals
    pair: octal; literals
@@ -238,7 +238,7 @@ user-definable precision.)
 Numbers are created by numeric literals or as the result of built-in functions
 and operators.  Unadorned integer literals (including hex, octal and binary
 numbers) yield integers.  Numeric literals containing a decimal point or an
-exponent sign yield floating point numbers.  Appending ``'j'`` or ``'J'`` to a
+exponent sign yield floating-point numbers.  Appending ``'j'`` or ``'J'`` to a
 numeric literal yields an imaginary number (a complex number with a zero real
 part) which you can add to an integer or float to get a complex number with real
 and imaginary parts.
@@ -832,7 +832,7 @@ over ``&``, ``|`` and ``^``.
 .. deprecated:: 3.12
 
    The use of the bitwise inversion operator ``~`` is deprecated and will
-   raise an error in Python 3.14.
+   raise an error in Python 3.16.
 
 :class:`bool` is a subclass of :class:`int` (see :ref:`typesnumeric`). In
 many numeric contexts, ``False`` and ``True`` behave like the integers 0 and 1, respectively.
@@ -1209,8 +1209,9 @@ accepts integers that meet the value restriction ``0 <= x <= 255``).
 | ``s.pop()`` or ``s.pop(i)``  | retrieves the item at *i* and  | \(2)                |
 |                              | also removes it from *s*       |                     |
 +------------------------------+--------------------------------+---------------------+
-| ``s.remove(x)``              | remove the first item from *s* | \(3)                |
-|                              | where ``s[i]`` is equal to *x* |                     |
+| ``s.remove(x)``              | removes the first item from    | \(3)                |
+|                              | *s* where ``s[i]`` is equal to |                     |
+|                              | *x*                            |                     |
 +------------------------------+--------------------------------+---------------------+
 | ``s.reverse()``              | reverses the items of *s* in   | \(4)                |
 |                              | place                          |                     |
@@ -1220,7 +1221,7 @@ accepts integers that meet the value restriction ``0 <= x <= 255``).
 Notes:
 
 (1)
-   *t* must have the same length as the slice it is replacing.
+   If *k* is not equal to ``1``, *t* must have the same length as the slice it is replacing.
 
 (2)
    The optional argument *i* defaults to ``-1``, so that by default the last
@@ -1497,8 +1498,8 @@ objects that compare equal might have different :attr:`~range.start`,
 .. seealso::
 
    * The `linspace recipe <https://code.activestate.com/recipes/579000-equally-spaced-numbers-linspace/>`_
-     shows how to implement a lazy version of range suitable for floating
-     point applications.
+     shows how to implement a lazy version of range suitable for floating-point
+     applications.
 
 .. index::
    single: string; text sequence type
@@ -1768,7 +1769,7 @@ expression support in the :mod:`re` module).
       cases.
 
 
-.. method:: str.format_map(mapping)
+.. method:: str.format_map(mapping, /)
 
    Similar to ``str.format(**mapping)``, except that ``mapping`` is
    used directly and not copied to a :class:`dict`.  This is useful
@@ -2095,8 +2096,9 @@ expression support in the :mod:`re` module).
    If *sep* is given, consecutive delimiters are not grouped together and are
    deemed to delimit empty strings (for example, ``'1,,2'.split(',')`` returns
    ``['1', '', '2']``).  The *sep* argument may consist of multiple characters
-   (for example, ``'1<>2<>3'.split('<>')`` returns ``['1', '2', '3']``).
-   Splitting an empty string with a specified separator returns ``['']``.
+   as a single delimiter (to split with multiple delimiters, use
+   :func:`re.split`). Splitting an empty string with a specified separator
+   returns ``['']``.
 
    For example::
 
@@ -2106,6 +2108,8 @@ expression support in the :mod:`re` module).
       ['1', '2,3']
       >>> '1,2,,3,'.split(',')
       ['1', '2', '', '3', '']
+      >>> '1<>2<>3<4'.split('<>')
+      ['1', '2', '3<4']
 
    If *sep* is not specified or is ``None``, a different splitting algorithm is
    applied: runs of consecutive whitespace are regarded as a single separator,
@@ -2439,19 +2443,19 @@ The conversion types are:
 +------------+-----------------------------------------------------+-------+
 | ``'X'``    | Signed hexadecimal (uppercase).                     | \(2)  |
 +------------+-----------------------------------------------------+-------+
-| ``'e'``    | Floating point exponential format (lowercase).      | \(3)  |
+| ``'e'``    | Floating-point exponential format (lowercase).      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'E'``    | Floating point exponential format (uppercase).      | \(3)  |
+| ``'E'``    | Floating-point exponential format (uppercase).      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'f'``    | Floating point decimal format.                      | \(3)  |
+| ``'f'``    | Floating-point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'F'``    | Floating point decimal format.                      | \(3)  |
+| ``'F'``    | Floating-point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'g'``    | Floating point format. Uses lowercase exponential   | \(4)  |
+| ``'g'``    | Floating-point format. Uses lowercase exponential   | \(4)  |
 |            | format if exponent is less than -4 or not less than |       |
 |            | precision, decimal format otherwise.                |       |
 +------------+-----------------------------------------------------+-------+
-| ``'G'``    | Floating point format. Uses uppercase exponential   | \(4)  |
+| ``'G'``    | Floating-point format. Uses uppercase exponential   | \(4)  |
 |            | format if exponent is less than -4 or not less than |       |
 |            | precision, decimal format otherwise.                |       |
 +------------+-----------------------------------------------------+-------+
@@ -3149,10 +3153,9 @@ produce new objects.
    If *sep* is given, consecutive delimiters are not grouped together and are
    deemed to delimit empty subsequences (for example, ``b'1,,2'.split(b',')``
    returns ``[b'1', b'', b'2']``).  The *sep* argument may consist of a
-   multibyte sequence (for example, ``b'1<>2<>3'.split(b'<>')`` returns
-   ``[b'1', b'2', b'3']``). Splitting an empty sequence with a specified
-   separator returns ``[b'']`` or ``[bytearray(b'')]`` depending on the type
-   of object being split.  The *sep* argument may be any
+   multibyte sequence as a single delimiter. Splitting an empty sequence with
+   a specified separator returns ``[b'']`` or ``[bytearray(b'')]`` depending
+   on the type of object being split.  The *sep* argument may be any
    :term:`bytes-like object`.
 
    For example::
@@ -3163,6 +3166,8 @@ produce new objects.
       [b'1', b'2,3']
       >>> b'1,2,,3,'.split(b',')
       [b'1', b'2', b'', b'3', b'']
+      >>> b'1<>2<>3<4'.split(b'<>')
+      [b'1', b'2', b'3<4']
 
    If *sep* is not specified or is ``None``, a different splitting algorithm
    is applied: runs of consecutive ASCII whitespace are regarded as a single
@@ -3436,7 +3441,7 @@ place, and instead produce new objects.
    ``b'abcdefghijklmnopqrstuvwxyz'``. Uppercase ASCII characters
    are those byte values in the sequence ``b'ABCDEFGHIJKLMNOPQRSTUVWXYZ'``.
 
-   Unlike :func:`str.swapcase()`, it is always the case that
+   Unlike :func:`str.swapcase`, it is always the case that
    ``bin.swapcase().swapcase() == bin`` for the binary versions. Case
    conversions are symmetrical in ASCII, even though that is not generally
    true for arbitrary Unicode code points.
@@ -3657,19 +3662,19 @@ The conversion types are:
 +------------+-----------------------------------------------------+-------+
 | ``'X'``    | Signed hexadecimal (uppercase).                     | \(2)  |
 +------------+-----------------------------------------------------+-------+
-| ``'e'``    | Floating point exponential format (lowercase).      | \(3)  |
+| ``'e'``    | Floating-point exponential format (lowercase).      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'E'``    | Floating point exponential format (uppercase).      | \(3)  |
+| ``'E'``    | Floating-point exponential format (uppercase).      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'f'``    | Floating point decimal format.                      | \(3)  |
+| ``'f'``    | Floating-point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'F'``    | Floating point decimal format.                      | \(3)  |
+| ``'F'``    | Floating-point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'g'``    | Floating point format. Uses lowercase exponential   | \(4)  |
+| ``'g'``    | Floating-point format. Uses lowercase exponential   | \(4)  |
 |            | format if exponent is less than -4 or not less than |       |
 |            | precision, decimal format otherwise.                |       |
 +------------+-----------------------------------------------------+-------+
-| ``'G'``    | Floating point format. Uses uppercase exponential   | \(4)  |
+| ``'G'``    | Floating-point format. Uses uppercase exponential   | \(4)  |
 |            | format if exponent is less than -4 or not less than |       |
 |            | precision, decimal format otherwise.                |       |
 +------------+-----------------------------------------------------+-------+
@@ -3891,7 +3896,7 @@ copying.
          >>> a == b
          False
 
-      Note that, as with floating point numbers, ``v is w`` does *not* imply
+      Note that, as with floating-point numbers, ``v is w`` does *not* imply
       ``v == w`` for memoryview objects.
 
       .. versionchanged:: 3.3
@@ -3982,7 +3987,7 @@ copying.
       dangling resources) as soon as possible.
 
       After this method has been called, any further operation on the view
-      raises a :class:`ValueError` (except :meth:`release()` itself which can
+      raises a :class:`ValueError` (except :meth:`release` itself which can
       be called multiple times)::
 
          >>> m = memoryview(b'abc')
@@ -4464,14 +4469,14 @@ can be used interchangeably to index the same dictionary entry.
      ``dict([('foo', 100), ('bar', 200)])``, ``dict(foo=100, bar=200)``
 
    If no positional argument is given, an empty dictionary is created.
-   If a positional argument is given and it is a mapping object, a dictionary
-   is created with the same key-value pairs as the mapping object.  Otherwise,
-   the positional argument must be an :term:`iterable` object.  Each item in
-   the iterable must itself be an iterable with exactly two objects.  The
-   first object of each item becomes a key in the new dictionary, and the
-   second object the corresponding value.  If a key occurs more than once, the
-   last value for that key becomes the corresponding value in the new
-   dictionary.
+   If a positional argument is given and it defines a ``keys()`` method, a
+   dictionary is created by calling :meth:`~object.__getitem__` on the argument with
+   each returned key from the method.  Otherwise, the positional argument must be an
+   :term:`iterable` object.  Each item in the iterable must itself be an iterable
+   with exactly two elements.  The first element of each item becomes a key in the
+   new dictionary, and the second element the corresponding value.  If a key occurs
+   more than once, the last value for that key becomes the corresponding value in
+   the new dictionary.
 
    If keyword arguments are given, the keyword arguments and their values are
    added to the dictionary created from the positional argument.  If a key
@@ -4565,7 +4570,7 @@ can be used interchangeably to index the same dictionary entry.
 
       Return a shallow copy of the dictionary.
 
-   .. classmethod:: fromkeys(iterable[, value])
+   .. classmethod:: fromkeys(iterable, value=None, /)
 
       Create a new dictionary with keys from *iterable* and values set to *value*.
 
@@ -4575,7 +4580,7 @@ can be used interchangeably to index the same dictionary entry.
       such as an empty list.  To get distinct values, use a :ref:`dict
       comprehension <dict>` instead.
 
-   .. method:: get(key[, default])
+   .. method:: get(key, default=None)
 
       Return the value for *key* if *key* is in the dictionary, else *default*.
       If *default* is not given, it defaults to ``None``, so that this method
@@ -4617,7 +4622,7 @@ can be used interchangeably to index the same dictionary entry.
 
       .. versionadded:: 3.8
 
-   .. method:: setdefault(key[, default])
+   .. method:: setdefault(key, default=None)
 
       If *key* is in the dictionary, return its value.  If not, insert *key*
       with a value of *default* and return *default*.  *default* defaults to
@@ -4628,10 +4633,11 @@ can be used interchangeably to index the same dictionary entry.
       Update the dictionary with the key/value pairs from *other*, overwriting
       existing keys.  Return ``None``.
 
-      :meth:`update` accepts either another dictionary object or an iterable of
-      key/value pairs (as tuples or other iterables of length two).  If keyword
-      arguments are specified, the dictionary is then updated with those
-      key/value pairs: ``d.update(red=1, blue=2)``.
+      :meth:`update` accepts either another object with a ``keys()`` method (in
+      which case :meth:`~object.__getitem__` is called with every key returned from
+      the method) or an iterable of key/value pairs (as tuples or other iterables
+      of length two). If keyword arguments are specified, the dictionary is then
+      updated with those key/value pairs: ``d.update(red=1, blue=2)``.
 
    .. method:: values()
 
@@ -5481,22 +5487,6 @@ types, where they are relevant.  Some of these are not reported by the
 :func:`dir` built-in function.
 
 
-.. attribute:: object.__dict__
-
-   A dictionary or other mapping object used to store an object's (writable)
-   attributes.
-
-
-.. attribute:: instance.__class__
-
-   The class to which a class instance belongs.
-
-
-.. attribute:: class.__bases__
-
-   The tuple of base classes of a class object.
-
-
 .. attribute:: definition.__name__
 
    The name of the class, function, method, descriptor, or
@@ -5511,43 +5501,24 @@ types, where they are relevant.  Some of these are not reported by the
    .. versionadded:: 3.3
 
 
-.. attribute:: definition.__type_params__
-
-   The :ref:`type parameters <type-params>` of generic classes, functions,
-   and :ref:`type aliases <type-aliases>`.
-
-   .. versionadded:: 3.12
-
-
-.. attribute:: class.__mro__
+.. attribute:: definition.__module__
 
-   This attribute is a tuple of classes that are considered when looking for
-   base classes during method resolution.
+   The name of the module in which a class or function was defined.
 
 
-.. method:: class.mro()
+.. attribute:: definition.__doc__
 
-   This method can be overridden by a metaclass to customize the method
-   resolution order for its instances.  It is called at class instantiation, and
-   its result is stored in :attr:`~class.__mro__`.
+   The documentation string of a class or function, or ``None`` if undefined.
 
 
-.. method:: class.__subclasses__
-
-   Each class keeps a list of weak references to its immediate subclasses.  This
-   method returns a list of all those references still alive.  The list is in
-   definition order.  Example::
-
-      >>> int.__subclasses__()
-      [<class 'bool'>, <enum 'IntEnum'>, <flag 'IntFlag'>, <class 're._constants._NamedIntConstant'>]
-
+.. attribute:: definition.__type_params__
 
-.. attribute:: class.__static_attributes__
+   The :ref:`type parameters <type-params>` of generic classes, functions,
+   and :ref:`type aliases <type-aliases>`. For classes and functions that
+   are not generic, this will be an empty tuple.
 
-      A tuple containing names of attributes of this class which are accessed
-      through ``self.X`` from any function in its body.
+   .. versionadded:: 3.12
 
-      .. versionadded:: 3.13
 
 .. _int_max_str_digits:
 
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 1867678b2077fc..09165c481b246e 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -1,5 +1,5 @@
-:mod:`string` --- Common string operations
-==========================================
+:mod:`!string` --- Common string operations
+===========================================
 
 .. module:: string
    :synopsis: Common string operations.
@@ -59,11 +59,18 @@ The constants defined in this module are:
    String of ASCII characters which are considered punctuation characters
    in the ``C`` locale: ``!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~``.
 
+
 .. data:: printable
 
-   String of ASCII characters which are considered printable.  This is a
-   combination of :const:`digits`, :const:`ascii_letters`, :const:`punctuation`,
-   and :const:`whitespace`.
+   String of ASCII characters which are considered printable by Python.
+   This is a combination of :const:`digits`, :const:`ascii_letters`,
+   :const:`punctuation`, and :const:`whitespace`.
+
+   .. note::
+
+      By design, :meth:`string.printable.isprintable() <str.isprintable>`
+      returns :const:`False`. In particular, ``string.printable`` is not
+      printable in the POSIX sense (see :manpage:`LC_CTYPE <locale(5)>`).
 
 
 .. data:: whitespace
@@ -350,8 +357,9 @@ The meaning of the various alignment options is as follows:
 | ``'='`` | Forces the padding to be placed after the sign (if any)  |
 |         | but before the digits.  This is used for printing fields |
 |         | in the form '+000000120'. This alignment option is only  |
-|         | valid for numeric types.  It becomes the default for     |
-|         | numbers when '0' immediately precedes the field width.   |
+|         | valid for numeric types, excluding :class:`complex`.     |
+|         | It becomes the default for numbers when '0' immediately  |
+|         | precedes the field width.                                |
 +---------+----------------------------------------------------------+
 | ``'^'`` | Forces the field to be centered within the available     |
 |         | space.                                                   |
@@ -408,7 +416,9 @@ conversions, trailing zeros are not removed from the result.
 
 .. index:: single: , (comma); in string formatting
 
-The ``','`` option signals the use of a comma for a thousands separator.
+The ``','`` option signals the use of a comma for a thousands separator for
+floating-point presentation types and for integer presentation type ``'d'``.
+For other presentation types, this option is an error.
 For a locale aware separator, use the ``'n'`` integer presentation type
 instead.
 
@@ -418,7 +428,7 @@ instead.
 .. index:: single: _ (underscore); in string formatting
 
 The ``'_'`` option signals the use of an underscore for a thousands
-separator for floating point presentation types and for integer
+separator for floating-point presentation types and for integer
 presentation type ``'d'``.  For integer presentation types ``'b'``,
 ``'o'``, ``'x'``, and ``'X'``, underscores will be inserted every 4
 digits.  For other presentation types, specifying this option is an
@@ -432,9 +442,9 @@ including any prefixes, separators, and other formatting characters.
 If not specified, then the field width will be determined by the content.
 
 When no explicit alignment is given, preceding the *width* field by a zero
-(``'0'``) character enables
-sign-aware zero-padding for numeric types.  This is equivalent to a *fill*
-character of ``'0'`` with an *alignment* type of ``'='``.
+(``'0'``) character enables sign-aware zero-padding for numeric types,
+excluding :class:`complex`.  This is equivalent to a *fill* character of
+``'0'`` with an *alignment* type of ``'='``.
 
 .. versionchanged:: 3.10
    Preceding the *width* field by ``'0'`` no longer affects the default
@@ -491,9 +501,9 @@ The available integer presentation types are:
    +---------+----------------------------------------------------------+
 
 In addition to the above presentation types, integers can be formatted
-with the floating point presentation types listed below (except
+with the floating-point presentation types listed below (except
 ``'n'`` and ``None``). When doing so, :func:`float` is used to convert the
-integer to a floating point number before formatting.
+integer to a floating-point number before formatting.
 
 The available presentation types for :class:`float` and
 :class:`~decimal.Decimal` values are:
@@ -509,9 +519,8 @@ The available presentation types for :class:`float` and
    |         | significant digits. With no precision given, uses a      |
    |         | precision of ``6`` digits after the decimal point for    |
    |         | :class:`float`, and shows all coefficient digits         |
-   |         | for :class:`~decimal.Decimal`. If no digits follow the   |
-   |         | decimal point, the decimal point is also removed unless  |
-   |         | the ``#`` option is used.                                |
+   |         | for :class:`~decimal.Decimal`.  If ``p=0``, the decimal  |
+   |         | point is omitted unless the ``#`` option is used.        |
    +---------+----------------------------------------------------------+
    | ``'E'`` | Scientific notation. Same as ``'e'`` except it uses      |
    |         | an upper case 'E' as the separator character.            |
@@ -522,9 +531,8 @@ The available presentation types for :class:`float` and
    |         | precision given, uses a precision of ``6`` digits after  |
    |         | the decimal point for :class:`float`, and uses a         |
    |         | precision large enough to show all coefficient digits    |
-   |         | for :class:`~decimal.Decimal`. If no digits follow the   |
-   |         | decimal point, the decimal point is also removed unless  |
-   |         | the ``#`` option is used.                                |
+   |         | for :class:`~decimal.Decimal`.  If ``p=0``, the decimal  |
+   |         | point is omitted unless the ``#`` option is used.        |
    +---------+----------------------------------------------------------+
    | ``'F'`` | Fixed-point notation. Same as ``'f'``, but converts      |
    |         | ``nan`` to  ``NAN`` and ``inf`` to ``INF``.              |
@@ -574,11 +582,13 @@ The available presentation types for :class:`float` and
    | ``'%'`` | Percentage. Multiplies the number by 100 and displays    |
    |         | in fixed (``'f'``) format, followed by a percent sign.   |
    +---------+----------------------------------------------------------+
-   | None    | For :class:`float` this is the same as ``'g'``, except   |
+   | None    | For :class:`float` this is like the ``'g'`` type, except |
    |         | that when fixed-point notation is used to format the     |
    |         | result, it always includes at least one digit past the   |
-   |         | decimal point. The precision used is as large as needed  |
-   |         | to represent the given value faithfully.                 |
+   |         | decimal point, and switches to the scientific notation   |
+   |         | when ``exp >= p - 1``.  When the precision is not        |
+   |         | specified, the latter will be as large as needed to      |
+   |         | represent the given value faithfully.                    |
    |         |                                                          |
    |         | For :class:`~decimal.Decimal`, this is the same as       |
    |         | either ``'g'`` or ``'G'`` depending on the value of      |
@@ -588,6 +598,20 @@ The available presentation types for :class:`float` and
    |         | as altered by the other format modifiers.                |
    +---------+----------------------------------------------------------+
 
+The result should be correctly rounded to a given precision ``p`` of digits
+after the decimal point.  The rounding mode for :class:`float` matches that
+of the :func:`round` builtin.  For :class:`~decimal.Decimal`, the rounding
+mode of the current :ref:`context <decimal-context>` will be used.
+
+The available presentation types for :class:`complex` are the same as those for
+:class:`float` (``'%'`` is not allowed).  Both the real and imaginary components
+of a complex number are formatted as floating-point numbers, according to the
+specified presentation type.  They are separated by the mandatory sign of the
+imaginary part, the latter being terminated by a ``j`` suffix.  If the presentation
+type is missing, the result will match the output of :func:`str` (complex numbers with
+a non-zero real part are also surrounded by parentheses), possibly altered by
+other format modifiers.
+
 
 .. _formatexamples:
 
diff --git a/Doc/library/stringprep.rst b/Doc/library/stringprep.rst
index c6d78a356d97bc..37d5adf0fa9541 100644
--- a/Doc/library/stringprep.rst
+++ b/Doc/library/stringprep.rst
@@ -1,5 +1,5 @@
-:mod:`stringprep` --- Internet String Preparation
-=================================================
+:mod:`!stringprep` --- Internet String Preparation
+==================================================
 
 .. module:: stringprep
    :synopsis: String preparation, as per RFC 3453
diff --git a/Doc/library/struct.rst b/Doc/library/struct.rst
index 3e507c1c7e7c85..4769affdf1d666 100644
--- a/Doc/library/struct.rst
+++ b/Doc/library/struct.rst
@@ -1,5 +1,5 @@
-:mod:`struct` --- Interpret bytes as packed binary data
-=======================================================
+:mod:`!struct` --- Interpret bytes as packed binary data
+========================================================
 
 .. testsetup:: *
 
@@ -279,9 +279,9 @@ Notes:
 (1)
    .. index:: single: ? (question mark); in struct format strings
 
-   The ``'?'`` conversion code corresponds to the :c:expr:`_Bool` type defined by
-   C99. If this type is not available, it is simulated using a :c:expr:`char`. In
-   standard mode, it is always represented by one byte.
+   The ``'?'`` conversion code corresponds to the :c:expr:`_Bool` type
+   defined by C standards since C99.  In standard mode, it is
+   represented by one byte.
 
 (2)
    When attempting to pack a non-integer using any of the integer conversion
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index bd35fda7d79225..59c98e867ff42d 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -1,5 +1,5 @@
-:mod:`subprocess` --- Subprocess management
-===========================================
+:mod:`!subprocess` --- Subprocess management
+============================================
 
 .. module:: subprocess
    :synopsis: Subprocess management.
@@ -25,7 +25,7 @@ modules and functions can be found in the following sections.
 
    :pep:`324` -- PEP proposing the subprocess module
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 Using the :mod:`subprocess` Module
 ----------------------------------
@@ -52,7 +52,7 @@ underlying :class:`Popen` interface can be used directly.
 
    If *capture_output* is true, stdout and stderr will be captured.
    When used, the internal :class:`Popen` object is automatically created with
-   *stdout* and *stdin* both set to :data:`~subprocess.PIPE`.
+   *stdout* and *stderr* both set to :data:`~subprocess.PIPE`.
    The *stdout* and *stderr* arguments may not be supplied at the same time as *capture_output*.
    If you wish to capture and combine both streams into one,
    set *stdout* to :data:`~subprocess.PIPE`
@@ -608,7 +608,7 @@ functions.
 
    If *group* is not ``None``, the setregid() system call will be made in the
    child process prior to the execution of the subprocess. If the provided
-   value is a string, it will be looked up via :func:`grp.getgrnam()` and
+   value is a string, it will be looked up via :func:`grp.getgrnam` and
    the value in ``gr_gid`` will be used. If the value is an integer, it
    will be passed verbatim. (POSIX only)
 
@@ -618,7 +618,7 @@ functions.
    If *extra_groups* is not ``None``, the setgroups() system call will be
    made in the child process prior to the execution of the subprocess.
    Strings provided in *extra_groups* will be looked up via
-   :func:`grp.getgrnam()` and the values in ``gr_gid`` will be used.
+   :func:`grp.getgrnam` and the values in ``gr_gid`` will be used.
    Integer values will be passed verbatim. (POSIX only)
 
    .. availability:: POSIX
@@ -626,7 +626,7 @@ functions.
 
    If *user* is not ``None``, the setreuid() system call will be made in the
    child process prior to the execution of the subprocess. If the provided
-   value is a string, it will be looked up via :func:`pwd.getpwnam()` and
+   value is a string, it will be looked up via :func:`pwd.getpwnam` and
    the value in ``pw_uid`` will be used. If the value is an integer, it will
    be passed verbatim. (POSIX only)
 
@@ -1126,7 +1126,7 @@ The :mod:`subprocess` module exposes the following constants.
 .. data:: NORMAL_PRIORITY_CLASS
 
    A :class:`Popen` ``creationflags`` parameter to specify that a new process
-   will have an normal priority. (default)
+   will have a normal priority. (default)
 
    .. versionadded:: 3.7
 
diff --git a/Doc/library/sunau.rst b/Doc/library/sunau.rst
new file mode 100644
index 00000000000000..feb7768f8bdd68
--- /dev/null
+++ b/Doc/library/sunau.rst
@@ -0,0 +1,15 @@
+:mod:`!sunau` --- Read and write Sun AU files
+=============================================
+
+.. module:: sunau
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!sunau` module was
+`Python 3.12 <https://docs.python.org/3.12/library/sunau.html>`_.
diff --git a/Doc/library/superseded.rst b/Doc/library/superseded.rst
index 17bfa66f043302..d120c6acf621e3 100644
--- a/Doc/library/superseded.rst
+++ b/Doc/library/superseded.rst
@@ -4,12 +4,23 @@
 Superseded Modules
 ******************
 
-The modules described in this chapter are deprecated or :term:`soft deprecated` and only kept for
-backwards compatibility. They have been superseded by other modules.
+The modules described in this chapter have been superseded by other modules
+for most use cases, and are retained primarily to preserve backwards compatibility.
 
+Modules may appear in this chapter because they only cover a limited subset of
+a problem space, and a more generally applicable solution is available elsewhere
+in the standard library (for example, :mod:`getopt` covers the very specific
+task of "mimic the C :c:func:`!getopt` API in Python", rather than the broader
+command line option parsing and argument parsing capabilities offered by
+:mod:`optparse` and :mod:`argparse`).
+
+Alternatively, modules may appear in this chapter because they are deprecated
+outright, and awaiting removal in a future release, or they are
+:term:`soft deprecated` and their use is actively discouraged in new projects.
+With the removal of various obsolete modules through :pep:`594`, there are
+currently no modules in this latter category.
 
 .. toctree::
    :maxdepth: 1
 
    getopt.rst
-   optparse.rst
diff --git a/Doc/library/symtable.rst b/Doc/library/symtable.rst
index 47568387f9a7ce..56c62d8e610c93 100644
--- a/Doc/library/symtable.rst
+++ b/Doc/library/symtable.rst
@@ -1,5 +1,5 @@
-:mod:`symtable` --- Access to the compiler's symbol tables
-==========================================================
+:mod:`!symtable` --- Access to the compiler's symbol tables
+===========================================================
 
 .. module:: symtable
    :synopsis: Interface to the compiler's internal symbol tables.
@@ -31,21 +31,74 @@ Generating Symbol Tables
 Examining Symbol Tables
 -----------------------
 
+.. class:: SymbolTableType
+
+   An enumeration indicating the type of a :class:`SymbolTable` object.
+
+   .. attribute:: MODULE
+      :value: "module"
+
+      Used for the symbol table of a module.
+
+   .. attribute:: FUNCTION
+      :value: "function"
+
+      Used for the symbol table of a function.
+
+   .. attribute:: CLASS
+      :value: "class"
+
+      Used for the symbol table of a class.
+
+   The following members refer to different flavors of
+   :ref:`annotation scopes <annotation-scopes>`.
+
+   .. attribute:: ANNOTATION
+      :value: "annotation"
+
+      Used for annotations if ``from __future__ import annotations`` is active.
+
+   .. attribute:: TYPE_ALIAS
+      :value: "type alias"
+
+      Used for the symbol table of :keyword:`type` constructions.
+
+   .. attribute:: TYPE_PARAMETERS
+      :value: "type parameters"
+
+      Used for the symbol table of :ref:`generic functions <generic-functions>`
+      or :ref:`generic classes <generic-classes>`.
+
+   .. attribute:: TYPE_VARIABLE
+      :value: "type variable"
+
+      Used for the symbol table of the bound, the constraint tuple or the
+      default value of a single type variable in the formal sense, i.e.,
+      a TypeVar, a TypeVarTuple or a ParamSpec object (the latter two do
+      not support a bound or a constraint tuple).
+
+   .. versionadded:: 3.13
+
 .. class:: SymbolTable
 
    A namespace table for a block.  The constructor is not public.
 
    .. method:: get_type()
 
-      Return the type of the symbol table.  Possible values are ``'class'``,
-      ``'module'``, ``'function'``, ``'annotation'``, ``'TypeVar bound'``,
-      ``'type alias'``, and ``'type parameter'``. The latter four refer to
-      different flavors of :ref:`annotation scopes <annotation-scopes>`.
+      Return the type of the symbol table.  Possible values are members
+      of the :class:`SymbolTableType` enumeration.
 
       .. versionchanged:: 3.12
          Added ``'annotation'``,  ``'TypeVar bound'``, ``'type alias'``,
          and ``'type parameter'`` as possible return values.
 
+      .. versionchanged:: 3.13
+         Return values are members of the :class:`SymbolTableType` enumeration.
+
+         The exact values of the returned string may change in the future,
+         and thus, it is recommended to use :class:`SymbolTableType` members
+         instead of hard-coded strings.
+
    .. method:: get_id()
 
       Return the table's identifier.
@@ -114,11 +167,12 @@ Examining Symbol Tables
 
    .. method:: get_nonlocals()
 
-      Return a tuple containing names of nonlocals in this function.
+      Return a tuple containing names of explicitly declared nonlocals in this function.
 
    .. method:: get_frees()
 
-      Return a tuple containing names of free variables in this function.
+      Return a tuple containing names of :term:`free (closure) variables <closure variable>`
+      in this function.
 
 
 .. class:: Class
@@ -127,8 +181,39 @@ Examining Symbol Tables
 
    .. method:: get_methods()
 
-      Return a tuple containing the names of methods declared in the class.
-
+      Return a tuple containing the names of method-like functions declared
+      in the class.
+
+      Here, the term 'method' designates *any* function defined in the class
+      body via :keyword:`def` or :keyword:`async def`.
+
+      Functions defined in a deeper scope (e.g., in an inner class) are not
+      picked up by :meth:`get_methods`.
+
+      For example:
+
+         >>> import symtable
+         >>> st = symtable.symtable('''
+         ... def outer(): pass
+         ...
+         ... class A:
+         ...    def f():
+         ...        def w(): pass
+         ...
+         ...    def g(self): pass
+         ...
+         ...    @classmethod
+         ...    async def h(cls): pass
+         ...
+         ...    global outer
+         ...    def outer(self): pass
+         ... ''', 'test', 'exec')
+         >>> class_A = st.get_children()[1]
+         >>> class_A.get_methods()
+         ('f', 'g', 'h')
+
+      Although ``A().f()`` raises :exc:`TypeError` at runtime, ``A.f`` is still
+      considered as a method-like function.
 
 .. class:: Symbol
 
diff --git a/Doc/library/sys.monitoring.rst b/Doc/library/sys.monitoring.rst
index 0e0095e108e9c0..5f08deba332379 100644
--- a/Doc/library/sys.monitoring.rst
+++ b/Doc/library/sys.monitoring.rst
@@ -1,5 +1,5 @@
-:mod:`sys.monitoring` --- Execution event monitoring
-====================================================
+:mod:`!sys.monitoring` --- Execution event monitoring
+=====================================================
 
 .. module:: sys.monitoring
    :synopsis: Access and control event monitoring
@@ -160,7 +160,7 @@ events, use the expression ``PY_RETURN | PY_START``.
 
 .. monitoring-event:: NO_EVENTS
 
-    An alias for ``0`` so users can do explict comparisions like::
+    An alias for ``0`` so users can do explicit comparisons like::
 
       if get_events(DEBUGGER_ID) == NO_EVENTS:
           ...
@@ -258,7 +258,7 @@ Per code object events
 Events can also be controlled on a per code object basis. The functions
 defined below which accept a :class:`types.CodeType` should be prepared
 to accept a look-alike object from functions which are not defined
-in Python (see :ref:`monitoring`).
+in Python (see :ref:`c-api-monitoring`).
 
 .. function:: get_local_events(tool_id: int, code: CodeType, /) -> int
 
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 19a396d2300011..7af7a7c0d7c47b 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -1,5 +1,5 @@
-:mod:`sys` --- System-specific parameters and functions
-=======================================================
+:mod:`!sys` --- System-specific parameters and functions
+========================================================
 
 .. module:: sys
    :synopsis: Access system-specific parameters and functions.
@@ -8,7 +8,7 @@
 
 This module provides access to some variables used or maintained by the
 interpreter and to functions that interact strongly with the interpreter. It is
-always available.
+always available. Unless explicitly noted otherwise, all variables are read-only.
 
 
 .. data:: abiflags
@@ -735,11 +735,11 @@ always available.
    regardless of their size.  This function is mainly useful for tracking
    and debugging memory leaks.  Because of the interpreter's internal
    caches, the result can vary from call to call; you may have to call
-   :func:`_clear_internal_caches()` and :func:`gc.collect()` to get more
+   :func:`_clear_internal_caches` and :func:`gc.collect` to get more
    predictable results.
 
    If a Python build or implementation cannot reasonably compute this
-   information, :func:`getallocatedblocks()` is allowed to return 0 instead.
+   information, :func:`getallocatedblocks` is allowed to return 0 instead.
 
    .. versionadded:: 3.4
 
@@ -920,6 +920,35 @@ always available.
       It is not guaranteed to exist in all implementations of Python.
 
 
+.. function:: getobjects(limit[, type])
+
+   This function only exists if CPython was built using the
+   specialized configure option :option:`--with-trace-refs`.
+   It is intended only for debugging garbage-collection issues.
+
+   Return a list of up to *limit* dynamically allocated Python objects.
+   If *type* is given, only objects of that exact type (not subtypes)
+   are included.
+
+   Objects from the list are not safe to use.
+   Specifically, the result will include objects from all interpreters that
+   share their object allocator state (that is, ones created with
+   :c:member:`PyInterpreterConfig.use_main_obmalloc` set to 1
+   or using :c:func:`Py_NewInterpreter`, and the
+   :ref:`main interpreter <sub-interpreter-support>`).
+   Mixing objects from different interpreters may lead to crashes
+   or other unexpected behavior.
+
+   .. impl-detail::
+
+      This function should be used for specialized purposes only.
+      It is not guaranteed to exist in all implementations of Python.
+
+   .. versionchanged:: 3.13.1
+
+      The result may include objects from other interpreters.
+
+
 .. function:: getprofile()
 
    .. index::
@@ -1274,7 +1303,8 @@ always available.
     that implement Python's default import semantics. The
     :meth:`~importlib.abc.MetaPathFinder.find_spec` method is called with at
     least the absolute name of the module being imported. If the module to be
-    imported is contained in a package, then the parent package's :attr:`__path__`
+    imported is contained in a package, then the parent package's
+    :attr:`~module.__path__`
     attribute is passed in as a second argument. The method returns a
     :term:`module spec`, or ``None`` if the module cannot be found.
 
@@ -1708,7 +1738,7 @@ always available.
    contain a tuple of (filename, line number, function name) tuples
    describing the traceback where the coroutine object was created,
    with the most recent call first. When disabled, ``cr_origin`` will
-   be None.
+   be ``None``.
 
    To enable, pass a *depth* value greater than zero; this sets the
    number of frames whose information will be captured. To disable,
diff --git a/Doc/library/sysconfig.rst b/Doc/library/sysconfig.rst
index 2faab212e46eff..3921908b7c7bfc 100644
--- a/Doc/library/sysconfig.rst
+++ b/Doc/library/sysconfig.rst
@@ -1,5 +1,5 @@
-:mod:`sysconfig` --- Provide access to Python's configuration information
-=========================================================================
+:mod:`!sysconfig` --- Provide access to Python's configuration information
+==========================================================================
 
 .. module:: sysconfig
    :synopsis: Python's configuration information
@@ -305,7 +305,7 @@ Installation path functions
    mix with those by the other.
 
    End users should not use this function, but :func:`get_default_scheme` and
-   :func:`get_preferred_scheme()` instead.
+   :func:`get_preferred_scheme` instead.
 
    .. versionadded:: 3.10
 
@@ -376,7 +376,7 @@ Other functions
 
    This is used mainly to distinguish platform-specific build directories and
    platform-specific built distributions.  Typically includes the OS name and
-   version and the architecture (as supplied by 'os.uname()'), although the
+   version and the architecture (as supplied by :func:`os.uname`), although the
    exact information included depends on the OS; e.g., on Linux, the kernel
    version isn't particularly important.
 
diff --git a/Doc/library/syslog.rst b/Doc/library/syslog.rst
index 30bf3f09a24d42..548898a37bc6ea 100644
--- a/Doc/library/syslog.rst
+++ b/Doc/library/syslog.rst
@@ -1,5 +1,5 @@
-:mod:`syslog` --- Unix syslog library routines
-==============================================
+:mod:`!syslog` --- Unix syslog library routines
+===============================================
 
 .. module:: syslog
    :platform: Unix
diff --git a/Doc/library/tabnanny.rst b/Doc/library/tabnanny.rst
index dfe688a2f93e0c..4f61b3dd761400 100644
--- a/Doc/library/tabnanny.rst
+++ b/Doc/library/tabnanny.rst
@@ -1,5 +1,5 @@
-:mod:`tabnanny` --- Detection of ambiguous indentation
-======================================================
+:mod:`!tabnanny` --- Detection of ambiguous indentation
+=======================================================
 
 .. module:: tabnanny
    :synopsis: Tool for detecting white space related problems in Python
diff --git a/Doc/library/tarfile.rst b/Doc/library/tarfile.rst
index cf21dee83e6e7a..08a2951bc42dae 100644
--- a/Doc/library/tarfile.rst
+++ b/Doc/library/tarfile.rst
@@ -1,5 +1,5 @@
-:mod:`tarfile` --- Read and write tar archive files
-===================================================
+:mod:`!tarfile` --- Read and write tar archive files
+====================================================
 
 .. module:: tarfile
    :synopsis: Read and write tar-format archive files.
@@ -617,7 +617,7 @@ be finalized; only the internally used file object will be closed. See the
    it is best practice to only do so in top-level applications or
    :mod:`site configuration <site>`.
    To set a global default this way, a filter function needs to be wrapped in
-   :func:`staticmethod()` to prevent injection of a ``self`` argument.
+   :func:`staticmethod` to prevent injection of a ``self`` argument.
 
 .. method:: TarFile.add(name, arcname=None, recursive=True, *, filter=None)
 
diff --git a/Doc/library/telnetlib.rst b/Doc/library/telnetlib.rst
new file mode 100644
index 00000000000000..6971ad33ff9751
--- /dev/null
+++ b/Doc/library/telnetlib.rst
@@ -0,0 +1,19 @@
+:mod:`!telnetlib` --- Telnet client
+===================================
+
+.. module:: telnetlib
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+Possible replacements are third-party libraries from PyPI: :pypi:`telnetlib3`
+or :pypi:`Exscript`.  These are not supported or maintained by the Python core
+team.
+
+The last version of Python that provided the :mod:`!telnetlib` module was
+`Python 3.12 <https://docs.python.org/3.12/library/telnetlib.html>`_.
diff --git a/Doc/library/tempfile.rst b/Doc/library/tempfile.rst
index 9add8500c7788c..f0a81a093b435b 100644
--- a/Doc/library/tempfile.rst
+++ b/Doc/library/tempfile.rst
@@ -1,5 +1,5 @@
-:mod:`tempfile` --- Generate temporary files and directories
-============================================================
+:mod:`!tempfile` --- Generate temporary files and directories
+=============================================================
 
 .. module:: tempfile
    :synopsis: Generate temporary files and directories.
diff --git a/Doc/library/termios.rst b/Doc/library/termios.rst
index 57705ddc4e6470..0c6f3059fe71d1 100644
--- a/Doc/library/termios.rst
+++ b/Doc/library/termios.rst
@@ -1,5 +1,5 @@
-:mod:`termios` --- POSIX style tty control
-==========================================
+:mod:`!termios` --- POSIX style tty control
+===========================================
 
 .. module:: termios
    :platform: Unix
diff --git a/Doc/library/test.rst b/Doc/library/test.rst
index 92d675b48690ff..04d28aee0f8672 100644
--- a/Doc/library/test.rst
+++ b/Doc/library/test.rst
@@ -1,5 +1,5 @@
-:mod:`test` --- Regression tests package for Python
-===================================================
+:mod:`!test` --- Regression tests package for Python
+====================================================
 
 .. module:: test
    :synopsis: Regression tests package containing the testing suite for Python.
@@ -324,7 +324,7 @@ The :mod:`test.support` module defines the following constants:
 
 .. data:: Py_DEBUG
 
-   True if Python was built with the :c:macro:`Py_DEBUG` macro
+   ``True`` if Python was built with the :c:macro:`Py_DEBUG` macro
    defined, that is, if
    Python was :ref:`built in debug mode <debug-build>`.
 
@@ -946,7 +946,7 @@ The :mod:`test.support` module defines the following functions:
    other modules, possibly a C backend (like ``csv`` and its ``_csv``).
 
    The *extra* argument can be a set of names that wouldn't otherwise be automatically
-   detected as "public", like objects without a proper ``__module__``
+   detected as "public", like objects without a proper :attr:`~definition.__module__`
    attribute. If provided, it will be added to the automatically detected ones.
 
    The *not_exported* argument can be a set of names that must not be treated
@@ -1701,7 +1701,7 @@ The :mod:`test.support.warnings_helper` module provides support for warnings tes
 
 .. function:: check_warnings(*filters, quiet=True)
 
-   A convenience wrapper for :func:`warnings.catch_warnings()` that makes it
+   A convenience wrapper for :func:`warnings.catch_warnings` that makes it
    easier to test that a warning was correctly raised.  It is approximately
    equivalent to calling ``warnings.catch_warnings(record=True)`` with
    :meth:`warnings.simplefilter` set to ``always`` and with the option to
diff --git a/Doc/library/textwrap.rst b/Doc/library/textwrap.rst
index 7445410f91808c..a58b460fef409c 100644
--- a/Doc/library/textwrap.rst
+++ b/Doc/library/textwrap.rst
@@ -1,5 +1,5 @@
-:mod:`textwrap` --- Text wrapping and filling
-=============================================
+:mod:`!textwrap` --- Text wrapping and filling
+==============================================
 
 .. module:: textwrap
    :synopsis: Text wrapping and filling
@@ -154,7 +154,7 @@ hyphenated words; only then will long words be broken if necessary, unless
       wrapper = TextWrapper()
       wrapper.initial_indent = "* "
 
-   You can re-use the same :class:`TextWrapper` object many times, and you can
+   You can reuse the same :class:`TextWrapper` object many times, and you can
    change any of its options through direct assignment to instance attributes
    between uses.
 
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 4cf98a49e11442..cb82fea377697b 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -1,5 +1,5 @@
-:mod:`threading` --- Thread-based parallelism
-=============================================
+:mod:`!threading` --- Thread-based parallelism
+==============================================
 
 .. module:: threading
    :synopsis: Thread-based parallelism.
@@ -412,7 +412,7 @@ since it is impossible to detect the termination of alien threads.
       timeout occurs.
 
       When the *timeout* argument is present and not ``None``, it should be a
-      floating point number specifying a timeout for the operation in seconds
+      floating-point number specifying a timeout for the operation in seconds
       (or fractions thereof). As :meth:`~Thread.join` always returns ``None``,
       you must call :meth:`~Thread.is_alive` after :meth:`~Thread.join` to
       decide whether a timeout happened -- if the thread is still alive, the
@@ -598,14 +598,25 @@ and "recursion level" in addition to the locked/unlocked state used by primitive
 locks.  In the locked state, some thread owns the lock; in the unlocked state,
 no thread owns it.
 
-To lock the lock, a thread calls its :meth:`~RLock.acquire` method; this
-returns once the thread owns the lock.  To unlock the lock, a thread calls
-its :meth:`~Lock.release` method. :meth:`~Lock.acquire`/:meth:`~Lock.release`
-call pairs may be nested; only the final :meth:`~Lock.release` (the
-:meth:`~Lock.release` of the outermost pair) resets the lock to unlocked and
-allows another thread blocked in :meth:`~Lock.acquire` to proceed.
+Threads call a lock's :meth:`~RLock.acquire` method to lock it,
+and its :meth:`~Lock.release` method to unlock it.
 
-Reentrant locks also support the :ref:`context management protocol <with-locks>`.
+.. note::
+
+  Reentrant locks support the :ref:`context management protocol <with-locks>`,
+  so it is recommended to use :keyword:`with` instead of manually calling
+  :meth:`~RLock.acquire` and :meth:`~RLock.release`
+  to handle acquiring and releasing the lock for a block of code.
+
+RLock's :meth:`~RLock.acquire`/:meth:`~RLock.release` call pairs may be nested,
+unlike Lock's :meth:`~Lock.acquire`/:meth:`~Lock.release`. Only the final
+:meth:`~RLock.release` (the :meth:`~Lock.release` of the outermost pair) resets
+the lock to an unlocked state and allows another thread blocked in
+:meth:`~RLock.acquire` to proceed.
+
+:meth:`~RLock.acquire`/:meth:`~RLock.release` must be used in pairs: each acquire
+must have a release in the thread that has acquired the lock. Failing to
+call release as many times the lock has been acquired can lead to deadlock.
 
 
 .. class:: RLock()
@@ -624,25 +635,41 @@ Reentrant locks also support the :ref:`context management protocol <with-locks>`
 
       Acquire a lock, blocking or non-blocking.
 
-      When invoked without arguments: if this thread already owns the lock, increment
-      the recursion level by one, and return immediately.  Otherwise, if another
-      thread owns the lock, block until the lock is unlocked.  Once the lock is
-      unlocked (not owned by any thread), then grab ownership, set the recursion level
-      to one, and return.  If more than one thread is blocked waiting until the lock
-      is unlocked, only one at a time will be able to grab ownership of the lock.
-      There is no return value in this case.
+      .. seealso::
 
-      When invoked with the *blocking* argument set to ``True``, do the same thing as when
-      called without arguments, and return ``True``.
+         :ref:`Using RLock as a context manager <with-locks>`
+            Recommended over manual :meth:`!acquire` and :meth:`release` calls
+            whenever practical.
 
-      When invoked with the *blocking* argument set to ``False``, do not block.  If a call
-      without an argument would block, return ``False`` immediately; otherwise, do the
-      same thing as when called without arguments, and return ``True``.
 
-      When invoked with the floating-point *timeout* argument set to a positive
-      value, block for at most the number of seconds specified by *timeout*
-      and as long as the lock cannot be acquired.  Return ``True`` if the lock has
-      been acquired, ``False`` if the timeout has elapsed.
+      When invoked with the *blocking* argument set to ``True`` (the default):
+
+         * If no thread owns the lock, acquire the lock and return immediately.
+
+         * If another thread owns the lock, block until we are able to acquire
+           lock, or *timeout*, if set to a positive float value.
+
+         * If the same thread owns the lock, acquire the lock again, and
+           return immediately. This is the difference between :class:`Lock` and
+           :class:`!RLock`; :class:`Lock` handles this case the same as the previous,
+           blocking until the lock can be acquired.
+
+      When invoked with the *blocking* argument set to ``False``:
+
+         * If no thread owns the lock, acquire the lock and return immediately.
+
+         * If another thread owns the lock, return immediately.
+
+         * If the same thread owns the lock, acquire the lock again and return
+           immediately.
+
+      In all cases, if the thread was able to acquire the lock, return ``True``.
+      If the thread was unable to acquire the lock (i.e. if not blocking or
+      the timeout was reached) return ``False``.
+
+      If called multiple times, failing to call :meth:`~RLock.release` as many times
+      may lead to deadlock. Consider using :class:`!RLock` as a context manager rather than
+      calling acquire/release directly.
 
       .. versionchanged:: 3.2
          The *timeout* parameter is new.
@@ -658,7 +685,7 @@ Reentrant locks also support the :ref:`context management protocol <with-locks>`
 
       Only call this method when the calling thread owns the lock. A
       :exc:`RuntimeError` is raised if this method is called when the lock is
-      unlocked.
+      not acquired.
 
       There is no return value.
 
@@ -767,7 +794,7 @@ item to the buffer only needs to wake up one consumer thread.
       occurs.  Once awakened or timed out, it re-acquires the lock and returns.
 
       When the *timeout* argument is present and not ``None``, it should be a
-      floating point number specifying a timeout for the operation in seconds
+      floating-point number specifying a timeout for the operation in seconds
       (or fractions thereof).
 
       When the underlying lock is an :class:`RLock`, it is not released using
@@ -991,10 +1018,10 @@ method.  The :meth:`~Event.wait` method blocks until the flag is true.
       has not expired. The return value represents the
       reason that this blocking method returned; ``True`` if returning because
       the internal flag is set to true, or ``False`` if a timeout is given and
-      the the internal flag did not become true within the given wait time.
+      the internal flag did not become true within the given wait time.
 
       When the timeout argument is present and not ``None``, it should be a
-      floating point number specifying a timeout for the operation in seconds,
+      floating-point number specifying a timeout for the operation in seconds,
       or fractions thereof.
 
       .. versionchanged:: 3.1
diff --git a/Doc/library/time.rst b/Doc/library/time.rst
index d79ca6e1208107..804e2679027bd4 100644
--- a/Doc/library/time.rst
+++ b/Doc/library/time.rst
@@ -1,5 +1,5 @@
-:mod:`time` --- Time access and conversions
-===========================================
+:mod:`!time` --- Time access and conversions
+============================================
 
 .. module:: time
    :synopsis: Time access and conversions.
@@ -69,7 +69,7 @@ An explanation of some terminology and conventions is in order.
   systems, the clock "ticks" only 50 or 100 times a second.
 
 * On the other hand, the precision of :func:`.time` and :func:`sleep` is better
-  than their Unix equivalents: times are expressed as floating point numbers,
+  than their Unix equivalents: times are expressed as floating-point numbers,
   :func:`.time` returns the most accurate time available (using Unix
   :c:func:`!gettimeofday` where available), and :func:`sleep` will accept a time
   with a nonzero fraction (Unix :c:func:`!select` is used to implement this, where
@@ -193,7 +193,7 @@ Functions
    Use :func:`clock_settime_ns` to avoid the precision loss caused by the
    :class:`float` type.
 
-   .. availability:: Unix.
+   .. availability:: Unix, not Android, not iOS.
 
    .. versionadded:: 3.3
 
@@ -202,7 +202,7 @@ Functions
 
    Similar to :func:`clock_settime` but set time with nanoseconds.
 
-   .. availability:: Unix.
+   .. availability:: Unix, not Android, not iOS.
 
    .. versionadded:: 3.7
 
@@ -273,7 +273,7 @@ Functions
    This is the inverse function of :func:`localtime`.  Its argument is the
    :class:`struct_time` or full 9-tuple (since the dst flag is needed; use ``-1``
    as the dst flag if it is unknown) which expresses the time in *local* time, not
-   UTC.  It returns a floating point number, for compatibility with :func:`.time`.
+   UTC.  It returns a floating-point number, for compatibility with :func:`.time`.
    If the input value cannot be represented as a valid time, either
    :exc:`OverflowError` or :exc:`ValueError` will be raised (which depends on
    whether the invalid value is caught by Python or the underlying C libraries).
@@ -327,7 +327,7 @@ Functions
 
    .. impl-detail::
 
-      On CPython, use the same clock than :func:`time.monotonic()` and is a
+      On CPython, use the same clock as :func:`time.monotonic` and is a
       monotonic clock, i.e. a clock that cannot go backwards.
 
    Use :func:`perf_counter_ns` to avoid the precision loss caused by the
@@ -339,7 +339,7 @@ Functions
       On Windows, the function is now system-wide.
 
    .. versionchanged:: 3.13
-      Use the same clock than :func:`time.monotonic()`.
+      Use the same clock as :func:`time.monotonic`.
 
 
 .. function:: perf_counter_ns() -> int
@@ -376,7 +376,7 @@ Functions
 .. function:: sleep(secs)
 
    Suspend execution of the calling thread for the given number of seconds.
-   The argument may be a floating point number to indicate a more precise sleep
+   The argument may be a floating-point number to indicate a more precise sleep
    time.
 
    If the sleep is interrupted by a signal and no exception is raised by the
@@ -385,20 +385,29 @@ Functions
    The suspension time may be longer than requested by an arbitrary amount,
    because of the scheduling of other activity in the system.
 
+   .. rubric:: Windows implementation
+
    On Windows, if *secs* is zero, the thread relinquishes the remainder of its
    time slice to any other thread that is ready to run. If there are no other
    threads ready to run, the function returns immediately, and the thread
    continues execution.  On Windows 8.1 and newer the implementation uses
    a `high-resolution timer
-   <https://docs.microsoft.com/en-us/windows-hardware/drivers/kernel/high-resolution-timers>`_
+   <https://learn.microsoft.com/windows-hardware/drivers/kernel/high-resolution-timers>`_
    which provides resolution of 100 nanoseconds. If *secs* is zero, ``Sleep(0)`` is used.
 
-   Unix implementation:
+   .. rubric:: Unix implementation
 
    * Use ``clock_nanosleep()`` if available (resolution: 1 nanosecond);
    * Or use ``nanosleep()`` if available (resolution: 1 nanosecond);
    * Or use ``select()`` (resolution: 1 microsecond).
 
+   .. note::
+
+      To emulate a "no-op", use :keyword:`pass` instead of ``time.sleep(0)``.
+
+      To voluntarily relinquish the CPU, specify a real-time :ref:`scheduling
+      policy <os-scheduling-policy>` and use :func:`os.sched_yield` instead.
+
    .. audit-event:: time.sleep secs
 
    .. versionchanged:: 3.5
@@ -483,6 +492,9 @@ Functions
    |           |                                                |       |
    |           |                                                |       |
    +-----------+------------------------------------------------+-------+
+   | ``%u``    | Day of the week (Monday is 1; Sunday is 7)     |       |
+   |           | as a decimal number [1, 7].                    |       |
+   +-----------+------------------------------------------------+-------+
    | ``%w``    | Weekday as a decimal number [0(Sunday),6].     |       |
    |           |                                                |       |
    +-----------+------------------------------------------------+-------+
@@ -515,6 +527,16 @@ Functions
    | ``%Z``    | Time zone name (no characters if no time zone  |       |
    |           | exists). Deprecated. [1]_                      |       |
    +-----------+------------------------------------------------+-------+
+   | ``%G``    | ISO 8601 year (similar to ``%Y`` but follows   |       |
+   |           | the rules for the ISO 8601 calendar year).     |       |
+   |           | The year starts with the week that contains    |       |
+   |           | the first Thursday of the calendar year.       |       |
+   +-----------+------------------------------------------------+-------+
+   | ``%V``    | ISO 8601 week number (as a decimal number      |       |
+   |           | [01,53]). The first week of the year is the    |       |
+   |           | one that contains the first Thursday of the    |       |
+   |           | year. Weeks start on Monday.                   |       |
+   +-----------+------------------------------------------------+-------+
    | ``%%``    | A literal ``'%'`` character.                   |       |
    +-----------+------------------------------------------------+-------+
 
@@ -617,7 +639,7 @@ Functions
         - range [1, 12]
 
       * - 2
-        - .. attribute:: tm_day
+        - .. attribute:: tm_mday
         - range [1, 31]
 
       * - 3
@@ -665,13 +687,13 @@ Functions
 
 .. function:: time() -> float
 
-   Return the time in seconds since the epoch_ as a floating point
+   Return the time in seconds since the epoch_ as a floating-point
    number. The handling of `leap seconds`_ is platform dependent.
    On Windows and most Unix systems, the leap seconds are not counted towards
    the time in seconds since the epoch_. This is commonly referred to as `Unix
    time <https://en.wikipedia.org/wiki/Unix_time>`_.
 
-   Note that even though the time is always returned as a floating point
+   Note that even though the time is always returned as a floating-point
    number, not all systems provide time with a better precision than 1 second.
    While this function normally returns non-decreasing values, it can return a
    lower value than a previous call if the system clock has been set back
diff --git a/Doc/library/timeit.rst b/Doc/library/timeit.rst
index 616f8365b80f6c..548a3ee0540506 100644
--- a/Doc/library/timeit.rst
+++ b/Doc/library/timeit.rst
@@ -1,5 +1,5 @@
-:mod:`timeit` --- Measure execution time of small code snippets
-===============================================================
+:mod:`!timeit` --- Measure execution time of small code snippets
+================================================================
 
 .. module:: timeit
    :synopsis: Measure the execution time of small code snippets.
diff --git a/Doc/library/tkinter.colorchooser.rst b/Doc/library/tkinter.colorchooser.rst
index 6e8479c1dea1e2..df2b324fd5d3a7 100644
--- a/Doc/library/tkinter.colorchooser.rst
+++ b/Doc/library/tkinter.colorchooser.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.colorchooser` --- Color choosing dialog
-=====================================================
+:mod:`!tkinter.colorchooser` --- Color choosing dialog
+======================================================
 
 .. module:: tkinter.colorchooser
    :platform: Tk
diff --git a/Doc/library/tkinter.dnd.rst b/Doc/library/tkinter.dnd.rst
index 02de0fd331958d..62298d96c26459 100644
--- a/Doc/library/tkinter.dnd.rst
+++ b/Doc/library/tkinter.dnd.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.dnd` --- Drag and drop support
-============================================
+:mod:`!tkinter.dnd` --- Drag and drop support
+=============================================
 
 .. module:: tkinter.dnd
    :platform: Tk
@@ -25,8 +25,8 @@ Selection of a target object occurs as follows:
 #. Top-down search of area under mouse for target widget
 
  * Target widget should have a callable *dnd_accept* attribute
- * If *dnd_accept* is not present or returns None, search moves to parent widget
- * If no target widget is found, then the target object is None
+ * If *dnd_accept* is not present or returns ``None``, search moves to parent widget
+ * If no target widget is found, then the target object is ``None``
 
 2. Call to *<old_target>.dnd_leave(source, event)*
 #. Call to *<new_target>.dnd_enter(source, event)*
diff --git a/Doc/library/tkinter.font.rst b/Doc/library/tkinter.font.rst
index c7c2b7b566cf8f..ed01bd5f483943 100644
--- a/Doc/library/tkinter.font.rst
+++ b/Doc/library/tkinter.font.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.font` --- Tkinter font wrapper
-============================================
+:mod:`!tkinter.font` --- Tkinter font wrapper
+=============================================
 
 .. module:: tkinter.font
    :platform: Tk
diff --git a/Doc/library/tkinter.messagebox.rst b/Doc/library/tkinter.messagebox.rst
index 56090a0a0e424b..0dc9632ca73304 100644
--- a/Doc/library/tkinter.messagebox.rst
+++ b/Doc/library/tkinter.messagebox.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.messagebox` --- Tkinter message prompts
-=====================================================
+:mod:`!tkinter.messagebox` --- Tkinter message prompts
+======================================================
 
 .. module:: tkinter.messagebox
    :platform: Tk
diff --git a/Doc/library/tkinter.rst b/Doc/library/tkinter.rst
index 7e5dee1b562df8..f284988daf2d4e 100644
--- a/Doc/library/tkinter.rst
+++ b/Doc/library/tkinter.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter` --- Python interface to Tcl/Tk
-=============================================
+:mod:`!tkinter` --- Python interface to Tcl/Tk
+==============================================
 
 .. module:: tkinter
    :synopsis: Interface to Tcl/Tk for graphical user interfaces
@@ -58,7 +58,7 @@ details that are unchanged.
    * `Modern Tkinter for Busy Python Developers <https://tkdocs.com/book.html>`_
       By Mark Roseman. (ISBN 978-1999149567)
 
-   * `Python GUI programming with Tkinter <https://www.packtpub.com/product/python-gui-programming-with-tkinter/9781788835886>`_
+   * `Python GUI programming with Tkinter <https://www.packtpub.com/en-us/product/python-gui-programming-with-tkinter-9781788835886>`_
       By Alan D. Moore. (ISBN 978-1788835886)
 
    * `Programming Python <https://learning-python.com/about-pp4e.html>`_
@@ -983,10 +983,10 @@ option (other options are available as well).
    Added the :class:`!PhotoImage` method :meth:`!copy_replace` to copy a region
    from one image to other image, possibly with pixel zooming and/or
    subsampling.
-   Add *from_coords* parameter to :class:`!PhotoImage` methods :meth:`!copy()`,
-   :meth:`!zoom()` and :meth:`!subsample()`.
+   Add *from_coords* parameter to :class:`!PhotoImage` methods :meth:`!copy`,
+   :meth:`!zoom` and :meth:`!subsample`.
    Add *zoom* and *subsample* parameters to :class:`!PhotoImage` method
-   :meth:`!copy()`.
+   :meth:`!copy`.
 
 The image object can then be used wherever an ``image`` option is supported by
 some widget (e.g. labels, buttons, menus). In these cases, Tk will not keep a
diff --git a/Doc/library/tkinter.scrolledtext.rst b/Doc/library/tkinter.scrolledtext.rst
index d20365baa38690..763e24929d74b5 100644
--- a/Doc/library/tkinter.scrolledtext.rst
+++ b/Doc/library/tkinter.scrolledtext.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.scrolledtext` --- Scrolled Text Widget
-====================================================
+:mod:`!tkinter.scrolledtext` --- Scrolled Text Widget
+=====================================================
 
 .. module:: tkinter.scrolledtext
    :platform: Tk
diff --git a/Doc/library/tkinter.ttk.rst b/Doc/library/tkinter.ttk.rst
index bd0d8b3799a0f1..628e9f945ac365 100644
--- a/Doc/library/tkinter.ttk.rst
+++ b/Doc/library/tkinter.ttk.rst
@@ -1,5 +1,5 @@
-:mod:`tkinter.ttk` --- Tk themed widgets
-========================================
+:mod:`!tkinter.ttk` --- Tk themed widgets
+=========================================
 
 .. module:: tkinter.ttk
    :synopsis: Tk themed widget set
diff --git a/Doc/library/token.rst b/Doc/library/token.rst
index e6dc37d7ad852c..40982f32b4beee 100644
--- a/Doc/library/token.rst
+++ b/Doc/library/token.rst
@@ -1,5 +1,5 @@
-:mod:`token` --- Constants used with Python parse trees
-=======================================================
+:mod:`!token` --- Constants used with Python parse trees
+========================================================
 
 .. module:: token
    :synopsis: Constants representing terminal nodes of the parse tree.
@@ -75,10 +75,17 @@ the :mod:`tokenize` module.
    :noindex:
 
    Token value indicating that a type comment was recognized.  Such
-   tokens are only produced when :func:`ast.parse()` is invoked with
+   tokens are only produced when :func:`ast.parse` is invoked with
    ``type_comments=True``.
 
 
+.. data:: EXACT_TOKEN_TYPES
+
+   A dictionary mapping the string representation of a token to its numeric code.
+
+   .. versionadded:: 3.8
+
+
 .. versionchanged:: 3.5
    Added :data:`!AWAIT` and :data:`!ASYNC` tokens.
 
diff --git a/Doc/library/tokenize.rst b/Doc/library/tokenize.rst
index 92bdb052267a68..b80917eae66f8b 100644
--- a/Doc/library/tokenize.rst
+++ b/Doc/library/tokenize.rst
@@ -1,5 +1,5 @@
-:mod:`tokenize` --- Tokenizer for Python source
-===============================================
+:mod:`!tokenize` --- Tokenizer for Python source
+================================================
 
 .. module:: tokenize
    :synopsis: Lexical scanner for Python source code.
@@ -91,11 +91,10 @@ write back the modified script.
     sequences with at least two elements, the token type and the token string.
     Any additional sequence elements are ignored.
 
-    The reconstructed script is returned as a single string.  The result is
-    guaranteed to tokenize back to match the input so that the conversion is
-    lossless and round-trips are assured.  The guarantee applies only to the
-    token type and token string as the spacing between tokens (column
-    positions) may change.
+    The result is guaranteed to tokenize back to match the input so that the
+    conversion is lossless and round-trips are assured.  The guarantee applies
+    only to the token type and token string as the spacing between tokens
+    (column positions) may change.
 
     It returns bytes, encoded using the :data:`~token.ENCODING` token, which
     is the first token sequence output by :func:`.tokenize`. If there is no
diff --git a/Doc/library/tomllib.rst b/Doc/library/tomllib.rst
index 406985b84471f2..521a7a17fb3e8b 100644
--- a/Doc/library/tomllib.rst
+++ b/Doc/library/tomllib.rst
@@ -1,5 +1,5 @@
-:mod:`tomllib` --- Parse TOML files
-===================================
+:mod:`!tomllib` --- Parse TOML files
+====================================
 
 .. module:: tomllib
    :synopsis: Parse TOML files.
@@ -13,7 +13,7 @@
 
 --------------
 
-This module provides an interface for parsing TOML (Tom's Obvious Minimal
+This module provides an interface for parsing TOML 1.0.0 (Tom's Obvious Minimal
 Language, `https://toml.io <https://toml.io/en/>`_). This module does not
 support writing TOML.
 
diff --git a/Doc/library/trace.rst b/Doc/library/trace.rst
index 8854905e192b45..cae94ea08e17e5 100644
--- a/Doc/library/trace.rst
+++ b/Doc/library/trace.rst
@@ -1,5 +1,5 @@
-:mod:`trace` --- Trace or track Python statement execution
-==========================================================
+:mod:`!trace` --- Trace or track Python statement execution
+===========================================================
 
 .. module:: trace
    :synopsis: Trace or track Python statement execution.
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst
index ab83e0df10b709..301cf225a51d37 100644
--- a/Doc/library/traceback.rst
+++ b/Doc/library/traceback.rst
@@ -1,5 +1,5 @@
-:mod:`traceback` --- Print or retrieve a stack traceback
-========================================================
+:mod:`!traceback` --- Print or retrieve a stack traceback
+=========================================================
 
 .. module:: traceback
    :synopsis: Print or retrieve a stack traceback.
@@ -8,11 +8,15 @@
 
 --------------
 
-This module provides a standard interface to extract, format and print stack
-traces of Python programs.  It exactly mimics the behavior of the Python
-interpreter when it prints a stack trace.  This is useful when you want to print
-stack traces under program control, such as in a "wrapper" around the
-interpreter.
+This module provides a standard interface to extract, format and print
+stack traces of Python programs. It is more flexible than the
+interpreter's default traceback display, and therefore makes it
+possible to configure certain aspects of the output. Finally,
+it contains a utility for capturing enough information about an
+exception to print it later, without the need to save a reference
+to the actual exception. Since exceptions can be the roots of large
+objects graph, this utility can significantly improve
+memory management.
 
 .. index:: pair: object; traceback
 
@@ -29,7 +33,20 @@ which are assigned to the :attr:`~BaseException.__traceback__` field of
    Module :mod:`pdb`
       Interactive source code debugger for Python programs.
 
-The module defines the following functions:
+The module's API can be divided into two parts:
+
+* Module-level functions offering basic functionality, which are useful for interactive
+  inspection of exceptions and tracebacks.
+
+* :class:`TracebackException` class and its helper classes
+  :class:`StackSummary` and :class:`FrameSummary`. These offer both more
+  flexibility in the output generated and the ability to store the information
+  necessary for later formatting without holding references to actual exception
+  and traceback objects.
+
+
+Module-Level Functions
+----------------------
 
 .. function:: print_tb(tb, limit=None, file=None)
 
@@ -42,6 +59,14 @@ The module defines the following functions:
    :term:`file <file object>` or :term:`file-like object` to
    receive the output.
 
+   .. note::
+
+      The meaning of the *limit* parameter is different than the meaning
+      of :const:`sys.tracebacklimit`. A negative *limit* value corresponds to
+      a positive value of :const:`!sys.tracebacklimit`, whereas the behaviour of
+      a positive *limit* value cannot be achieved with
+      :const:`!sys.tracebacklimit`.
+
    .. versionchanged:: 3.5
        Added negative *limit* support.
 
@@ -132,6 +157,13 @@ The module defines the following functions:
    arguments have the same meaning as for :func:`print_stack`.
 
 
+.. function:: print_list(extracted_list, file=None)
+
+   Print the list of tuples as returned by :func:`extract_tb` or
+   :func:`extract_stack` as a formatted stack trace to the given file.
+   If *file* is ``None``, the output is written to :data:`sys.stderr`.
+
+
 .. function:: format_list(extracted_list)
 
    Given a list of tuples or :class:`FrameSummary` objects as returned by
@@ -229,7 +261,6 @@ The module defines the following functions:
 
    .. versionadded:: 3.5
 
-The module also defines the following classes:
 
 :class:`!TracebackException` Objects
 ------------------------------------
@@ -237,12 +268,17 @@ The module also defines the following classes:
 .. versionadded:: 3.5
 
 :class:`!TracebackException` objects are created from actual exceptions to
-capture data for later printing in a lightweight fashion.
+capture data for later printing.  They offer a more lightweight method of
+storing this information by avoiding holding references to
+:ref:`traceback<traceback-objects>` and :ref:`frame<frame-objects>` objects.
+In addition, they expose more options to configure the output compared to
+the module-level functions described above.
 
 .. class:: TracebackException(exc_type, exc_value, exc_traceback, *, limit=None, lookup_lines=True, capture_locals=False, compact=False, max_group_width=15, max_group_depth=10)
 
-   Capture an exception for later rendering. *limit*, *lookup_lines* and
-   *capture_locals* are as for the :class:`StackSummary` class.
+   Capture an exception for later rendering. The meaning of *limit*,
+   *lookup_lines* and *capture_locals* are as for the :class:`StackSummary`
+   class.
 
    If *compact* is true, only data that is required by
    :class:`!TracebackException`'s :meth:`format` method
@@ -473,7 +509,7 @@ in a :ref:`traceback <traceback-objects>`.
    attribute accessed (which also happens when casting it to a :class:`tuple`).
    :attr:`~FrameSummary.line` may be directly provided, and will prevent line
    lookups happening at all. *locals* is an optional local variable
-   dictionary, and if supplied the variable representations are stored in the
+   mapping, and if supplied the variable representations are stored in the
    summary for later display.
 
    :class:`!FrameSummary` instances have the following attributes:
@@ -501,8 +537,8 @@ in a :ref:`traceback <traceback-objects>`.
 
 .. _traceback-example:
 
-Traceback Examples
-------------------
+Examples of Using the Module-Level Functions
+--------------------------------------------
 
 This simple example implements a basic read-eval-print loop, similar to (but
 less useful than) the standard Python interactive interpreter loop.  For a more
@@ -541,8 +577,7 @@ exception and traceback:
 
    try:
        lumberjack()
-   except IndexError:
-       exc = sys.exception()
+   except IndexError as exc:
        print("*** print_tb:")
        traceback.print_tb(exc.__traceback__, limit=1, file=sys.stdout)
        print("*** print_exception:")
@@ -645,5 +680,88 @@ This last example demonstrates the final few formatting functions:
    ['  File "spam.py", line 3, in <module>\n    spam.eggs()\n',
     '  File "eggs.py", line 42, in eggs\n    return "bacon"\n']
    >>> an_error = IndexError('tuple index out of range')
-   >>> traceback.format_exception_only(type(an_error), an_error)
+   >>> traceback.format_exception_only(an_error)
    ['IndexError: tuple index out of range\n']
+
+
+Examples of Using :class:`TracebackException`
+---------------------------------------------
+
+With the helper class, we have more options::
+
+   >>> import sys
+   >>> from traceback import TracebackException
+   >>>
+   >>> def lumberjack():
+   ...     bright_side_of_life()
+   ...
+   >>> def bright_side_of_life():
+   ...     t = "bright", "side", "of", "life"
+   ...     return t[5]
+   ...
+   >>> try:
+   ...     lumberjack()
+   ... except IndexError as e:
+   ...     exc = e
+   ...
+   >>> try:
+   ...     try:
+   ...         lumberjack()
+   ...     except:
+   ...         1/0
+   ... except Exception as e:
+   ...     chained_exc = e
+   ...
+   >>> # limit works as with the module-level functions
+   >>> TracebackException.from_exception(exc, limit=-2).print()
+   Traceback (most recent call last):
+     File "<python-input-1>", line 6, in lumberjack
+       bright_side_of_life()
+       ~~~~~~~~~~~~~~~~~~~^^
+     File "<python-input-1>", line 10, in bright_side_of_life
+       return t[5]
+              ~^^^
+   IndexError: tuple index out of range
+
+   >>> # capture_locals adds local variables in frames
+   >>> TracebackException.from_exception(exc, limit=-2, capture_locals=True).print()
+   Traceback (most recent call last):
+     File "<python-input-1>", line 6, in lumberjack
+       bright_side_of_life()
+       ~~~~~~~~~~~~~~~~~~~^^
+     File "<python-input-1>", line 10, in bright_side_of_life
+       return t[5]
+              ~^^^
+       t = ("bright", "side", "of", "life")
+   IndexError: tuple index out of range
+
+   >>> # The *chain* kwarg to print() controls whether chained
+   >>> # exceptions are displayed
+   >>> TracebackException.from_exception(chained_exc).print()
+   Traceback (most recent call last):
+     File "<python-input-19>", line 4, in <module>
+       lumberjack()
+       ~~~~~~~~~~^^
+     File "<python-input-8>", line 7, in lumberjack
+       bright_side_of_life()
+       ~~~~~~~~~~~~~~~~~~~^^
+     File "<python-input-8>", line 11, in bright_side_of_life
+       return t[5]
+              ~^^^
+   IndexError: tuple index out of range
+
+   During handling of the above exception, another exception occurred:
+
+   Traceback (most recent call last):
+     File "<python-input-19>", line 6, in <module>
+       1/0
+       ~^~
+   ZeroDivisionError: division by zero
+
+   >>> TracebackException.from_exception(chained_exc).print(chain=False)
+   Traceback (most recent call last):
+     File "<python-input-19>", line 6, in <module>
+       1/0
+       ~^~
+   ZeroDivisionError: division by zero
+
diff --git a/Doc/library/tracemalloc.rst b/Doc/library/tracemalloc.rst
index 68432aeaecbcc1..2370d927292eb0 100644
--- a/Doc/library/tracemalloc.rst
+++ b/Doc/library/tracemalloc.rst
@@ -1,5 +1,5 @@
-:mod:`tracemalloc` --- Trace memory allocations
-===============================================
+:mod:`!tracemalloc` --- Trace memory allocations
+================================================
 
 .. module:: tracemalloc
    :synopsis: Trace memory allocations.
diff --git a/Doc/library/tty.rst b/Doc/library/tty.rst
index ed63561c40de24..37778bf20bdcc7 100644
--- a/Doc/library/tty.rst
+++ b/Doc/library/tty.rst
@@ -1,5 +1,5 @@
-:mod:`tty` --- Terminal control functions
-=========================================
+:mod:`!tty` --- Terminal control functions
+==========================================
 
 .. module:: tty
    :platform: Unix
@@ -53,7 +53,7 @@ The :mod:`tty` module defines the following functions:
    is saved before setting *fd* to raw mode; this value is returned.
 
    .. versionchanged:: 3.12
-      The return value is now the original tty attributes, instead of None.
+      The return value is now the original tty attributes, instead of ``None``.
 
 
 .. function:: setcbreak(fd, when=termios.TCSAFLUSH)
@@ -67,7 +67,7 @@ The :mod:`tty` module defines the following functions:
    the minimum input to 1 byte with no delay.
 
    .. versionchanged:: 3.12
-      The return value is now the original tty attributes, instead of None.
+      The return value is now the original tty attributes, instead of ``None``.
 
    .. versionchanged:: 3.12.2
       The ``ICRNL`` flag is no longer cleared. This restores the behavior
diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
index 2941201332a715..38f3263b14bd9a 100644
--- a/Doc/library/turtle.rst
+++ b/Doc/library/turtle.rst
@@ -120,7 +120,7 @@ off-screen)::
    home()
 
 The home position is at the center of the turtle's screen. If you ever need to
-know them, get the turtle's x-y co-ordinates with::
+know them, get the turtle's x-y coordinates with::
 
     pos()
 
@@ -987,8 +987,8 @@ Settings for measurement
       >>> turtle.heading()
       90.0
 
-      Change angle measurement unit to grad (also known as gon,
-      grade, or gradian and equals 1/100-th of the right angle.)
+      >>> # Change angle measurement unit to grad (also known as gon,
+      >>> # grade, or gradian and equals 1/100-th of the right angle.)
       >>> turtle.degrees(400.0)
       >>> turtle.heading()
       100.0
diff --git a/Doc/library/types.rst b/Doc/library/types.rst
index 89bc0a600c0af8..439e119461f798 100644
--- a/Doc/library/types.rst
+++ b/Doc/library/types.rst
@@ -1,5 +1,5 @@
-:mod:`types` --- Dynamic type creation and names for built-in types
-===================================================================
+:mod:`!types` --- Dynamic type creation and names for built-in types
+====================================================================
 
 .. module:: types
    :synopsis: Names for built-in types.
@@ -91,8 +91,8 @@ Dynamic Type Creation
 
     For classes that have an ``__orig_bases__`` attribute, this
     function returns the value of ``cls.__orig_bases__``.
-    For classes without the ``__orig_bases__`` attribute, ``cls.__bases__`` is
-    returned.
+    For classes without the ``__orig_bases__`` attribute,
+    :attr:`cls.__bases__ <type.__bases__>` is returned.
 
     Examples::
 
@@ -199,7 +199,7 @@ Standard names are defined for the following types:
 .. data:: CellType
 
    The type for cell objects: such objects are used as containers for
-   a function's free variables.
+   a function's :term:`closure variables <closure variable>`.
 
    .. versionadded:: 3.8
 
@@ -260,63 +260,18 @@ Standard names are defined for the following types:
    The type of :term:`modules <module>`. The constructor takes the name of the
    module to be created and optionally its :term:`docstring`.
 
-   .. note::
-      Use :func:`importlib.util.module_from_spec` to create a new module if you
-      wish to set the various import-controlled attributes.
-
-   .. attribute:: __doc__
-
-      The :term:`docstring` of the module. Defaults to ``None``.
-
-   .. attribute:: __loader__
-
-      The :term:`loader` which loaded the module. Defaults to ``None``.
-
-      This attribute is to match :attr:`importlib.machinery.ModuleSpec.loader`
-      as stored in the :attr:`__spec__` object.
-
-      .. note::
-         A future version of Python may stop setting this attribute by default.
-         To guard against this potential change, preferably read from the
-         :attr:`__spec__` attribute instead or use
-         ``getattr(module, "__loader__", None)`` if you explicitly need to use
-         this attribute.
-
-      .. versionchanged:: 3.4
-         Defaults to ``None``. Previously the attribute was optional.
-
-   .. attribute:: __name__
-
-      The name of the module. Expected to match
-      :attr:`importlib.machinery.ModuleSpec.name`.
-
-   .. attribute:: __package__
-
-      Which :term:`package` a module belongs to. If the module is top-level
-      (i.e. not a part of any specific package) then the attribute should be set
-      to ``''``, else it should be set to the name of the package (which can be
-      :attr:`__name__` if the module is a package itself). Defaults to ``None``.
-
-      This attribute is to match :attr:`importlib.machinery.ModuleSpec.parent`
-      as stored in the :attr:`__spec__` object.
-
-      .. note::
-         A future version of Python may stop setting this attribute by default.
-         To guard against this potential change, preferably read from the
-         :attr:`__spec__` attribute instead or use
-         ``getattr(module, "__package__", None)`` if you explicitly need to use
-         this attribute.
-
-      .. versionchanged:: 3.4
-         Defaults to ``None``. Previously the attribute was optional.
-
-   .. attribute:: __spec__
-
-      A record of the module's import-system-related state. Expected to be an
-      instance of :class:`importlib.machinery.ModuleSpec`.
+   .. seealso::
 
-      .. versionadded:: 3.4
+      :ref:`Documentation on module objects <module-objects>`
+         Provides details on the special attributes that can be found on
+         instances of :class:`!ModuleType`.
 
+      :func:`importlib.util.module_from_spec`
+         Modules created using the :class:`!ModuleType` constructor are
+         created with many of their special attributes unset or set to default
+         values. :func:`!module_from_spec` provides a more robust way of
+         creating :class:`!ModuleType` instances which ensures the various
+         attributes are set appropriately.
 
 .. data:: EllipsisType
 
@@ -392,7 +347,7 @@ Standard names are defined for the following types:
 
    In addition, when a class is defined with a :attr:`~object.__slots__` attribute, then for
    each slot, an instance of :class:`!MemberDescriptorType` will be added as an attribute
-   on the class. This allows the slot to appear in the class's :attr:`~object.__dict__`.
+   on the class. This allows the slot to appear in the class's :attr:`~type.__dict__`.
 
    .. impl-detail::
 
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index f53080e0610cb1..0c45c21841ace4 100644
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -27,12 +27,13 @@ This module provides runtime support for type hints.
 
 Consider the function below::
 
-   def moon_weight(earth_weight: float) -> str:
-       return f'On the moon, you would weigh {earth_weight * 0.166} kilograms.'
+   def surface_area_of_cube(edge_length: float) -> str:
+       return f"The surface area of the cube is {6 * edge_length ** 2}."
 
-The function ``moon_weight`` takes an argument expected to be an instance of :class:`float`,
-as indicated by the *type hint* ``earth_weight: float``. The function is expected to
-return an instance of :class:`str`, as indicated by the ``-> str`` hint.
+The function ``surface_area_of_cube`` takes an argument expected to
+be an instance of :class:`float`, as indicated by the :term:`type hint`
+``edge_length: float``. The function is expected to return an instance
+of :class:`str`, as indicated by the ``-> str`` hint.
 
 While type hints can be simple classes like :class:`float` or :class:`str`,
 they can also be more complex. The :mod:`typing` module provides a vocabulary of
@@ -97,8 +98,9 @@ Type aliases are useful for simplifying complex type signatures. For example::
    # The static type checker will treat the previous type signature as
    # being exactly equivalent to this one.
    def broadcast_message(
-           message: str,
-           servers: Sequence[tuple[tuple[str, int], dict[str, str]]]) -> None:
+       message: str,
+       servers: Sequence[tuple[tuple[str, int], dict[str, str]]]
+   ) -> None:
        ...
 
 The :keyword:`type` statement is new in Python 3.12. For backwards
@@ -206,7 +208,7 @@ Annotating callable objects
 ===========================
 
 Functions -- or other :term:`callable` objects -- can be annotated using
-:class:`collections.abc.Callable` or :data:`typing.Callable`.
+:class:`collections.abc.Callable` or deprecated :data:`typing.Callable`.
 ``Callable[[int], str]`` signifies a function that takes a single parameter
 of type :class:`int` and returns a :class:`str`.
 
@@ -399,7 +401,7 @@ The type of class objects
 =========================
 
 A variable annotated with ``C`` may accept a value of type ``C``. In
-contrast, a variable annotated with ``type[C]`` (or
+contrast, a variable annotated with ``type[C]`` (or deprecated
 :class:`typing.Type[C] <Type>`) may accept values that are classes
 themselves -- specifically, it will accept the *class object* of ``C``. For
 example::
@@ -439,6 +441,87 @@ For example::
 ``type[Any]`` is equivalent to :class:`type`, which is the root of Python's
 :ref:`metaclass hierarchy <metaclasses>`.
 
+
+.. _annotating-generators-and-coroutines:
+
+Annotating generators and coroutines
+====================================
+
+A generator can be annotated using the generic type
+:class:`Generator[YieldType, SendType, ReturnType] <collections.abc.Generator>`.
+For example::
+
+   def echo_round() -> Generator[int, float, str]:
+       sent = yield 0
+       while sent >= 0:
+           sent = yield round(sent)
+       return 'Done'
+
+Note that unlike many other generic classes in the standard library,
+the ``SendType`` of :class:`~collections.abc.Generator` behaves
+contravariantly, not covariantly or invariantly.
+
+The ``SendType`` and ``ReturnType`` parameters default to :const:`!None`::
+
+   def infinite_stream(start: int) -> Generator[int]:
+       while True:
+           yield start
+           start += 1
+
+It is also possible to set these types explicitly::
+
+   def infinite_stream(start: int) -> Generator[int, None, None]:
+       while True:
+           yield start
+           start += 1
+
+Simple generators that only ever yield values can also be annotated
+as having a return type of either
+:class:`Iterable[YieldType] <collections.abc.Iterable>`
+or :class:`Iterator[YieldType] <collections.abc.Iterator>`::
+
+   def infinite_stream(start: int) -> Iterator[int]:
+       while True:
+           yield start
+           start += 1
+
+Async generators are handled in a similar fashion, but don't
+expect a ``ReturnType`` type argument
+(:class:`AsyncGenerator[YieldType, SendType] <collections.abc.AsyncGenerator>`).
+The ``SendType`` argument defaults to :const:`!None`, so the following definitions
+are equivalent::
+
+   async def infinite_stream(start: int) -> AsyncGenerator[int]:
+       while True:
+           yield start
+           start = await increment(start)
+
+   async def infinite_stream(start: int) -> AsyncGenerator[int, None]:
+       while True:
+           yield start
+           start = await increment(start)
+
+As in the synchronous case,
+:class:`AsyncIterable[YieldType] <collections.abc.AsyncIterable>`
+and :class:`AsyncIterator[YieldType] <collections.abc.AsyncIterator>` are
+available as well::
+
+   async def infinite_stream(start: int) -> AsyncIterator[int]:
+       while True:
+           yield start
+           start = await increment(start)
+
+Coroutines can be annotated using
+:class:`Coroutine[YieldType, SendType, ReturnType] <collections.abc.Coroutine>`.
+Generic arguments correspond to those of :class:`~collections.abc.Generator`,
+for example::
+
+   from collections.abc import Coroutine
+   c: Coroutine[list[str], str, int]  # Some coroutine defined elsewhere
+   x = c.send('hi')                   # Inferred type of 'x' is list[str]
+   async def bar() -> None:
+       y = await c                    # Inferred type of 'y' is int
+
 .. _user-defined-generics:
 
 User-defined generic types
@@ -1233,7 +1316,7 @@ These can be used as types in annotations. They all support subscription using
          year: int
 
       def mutate_movie(m: Movie) -> None:
-         m["year"] = 1992  # allowed
+         m["year"] = 1999  # allowed
          m["title"] = "The Matrix"  # typechecker error
 
    There is no runtime checking for this property.
@@ -1375,6 +1458,23 @@ These can be used as types in annotations. They all support subscription using
         >>> X.__metadata__
         ('very', 'important', 'metadata')
 
+   * At runtime, if you want to retrieve the original
+     type wrapped by ``Annotated``, use the :attr:`!__origin__` attribute:
+
+     .. doctest::
+
+        >>> from typing import Annotated, get_origin
+        >>> Password = Annotated[str, "secret"]
+        >>> Password.__origin__
+        <class 'str'>
+
+     Note that using :func:`get_origin` will return ``Annotated`` itself:
+
+     .. doctest::
+
+        >>> get_origin(Password)
+        typing.Annotated
+
    .. seealso::
 
       :pep:`593` - Flexible function and variable annotations
@@ -1454,8 +1554,8 @@ These can be used as types in annotations. They all support subscription using
    to write such functions in a type-safe manner.
 
    If a ``TypeIs`` function is a class or instance method, then the type in
-   ``TypeIs`` maps to the type of the second parameter after ``cls`` or
-   ``self``.
+   ``TypeIs`` maps to the type of the second parameter (after ``cls`` or
+   ``self``).
 
    In short, the form ``def foo(arg: TypeA) -> TypeIs[TypeB]: ...``,
    means that if ``foo(arg)`` returns ``True``, then ``arg`` is an instance
@@ -1626,11 +1726,11 @@ without the dedicated syntax, as documented below.
       class Sequence[T]:  # T is a TypeVar
           ...
 
-   This syntax can also be used to create bound and constrained type
+   This syntax can also be used to create bounded and constrained type
    variables::
 
-      class StrSequence[S: str]:  # S is a TypeVar bound to str
-          ...
+      class StrSequence[S: str]:  # S is a TypeVar with a `str` upper bound;
+          ...                     # we can say that S is "bounded by `str`"
 
 
       class StrOrBytesSequence[A: (str, bytes)]:  # A is a TypeVar constrained to str or bytes
@@ -1663,8 +1763,8 @@ without the dedicated syntax, as documented below.
           """Add two strings or bytes objects together."""
           return x + y
 
-   Note that type variables can be *bound*, *constrained*, or neither, but
-   cannot be both bound *and* constrained.
+   Note that type variables can be *bounded*, *constrained*, or neither, but
+   cannot be both bounded *and* constrained.
 
    The variance of type variables is inferred by type checkers when they are created
    through the :ref:`type parameter syntax <type-params>` or when
@@ -1674,8 +1774,8 @@ without the dedicated syntax, as documented below.
    By default, manually created type variables are invariant.
    See :pep:`484` and :pep:`695` for more details.
 
-   Bound type variables and constrained type variables have different
-   semantics in several important ways. Using a *bound* type variable means
+   Bounded type variables and constrained type variables have different
+   semantics in several important ways. Using a *bounded* type variable means
    that the ``TypeVar`` will be solved using the most specific type possible::
 
       x = print_capitalized('a string')
@@ -1689,8 +1789,8 @@ without the dedicated syntax, as documented below.
 
       z = print_capitalized(45)  # error: int is not a subtype of str
 
-   Type variables can be bound to concrete types, abstract types (ABCs or
-   protocols), and even unions of types::
+   The upper bound of a type variable can be a concrete type, abstract type
+   (ABC or Protocol), or even a union of types::
 
       # Can be anything with an __abs__ method
       def print_abs[T: SupportsAbs](arg: T) -> None:
@@ -1734,7 +1834,7 @@ without the dedicated syntax, as documented below.
 
    .. attribute:: __bound__
 
-      The bound of the type variable, if any.
+      The upper bound of the type variable, if any.
 
       .. versionchanged:: 3.12
 
@@ -1780,7 +1880,7 @@ without the dedicated syntax, as documented below.
 
 .. _typevartuple:
 
-.. class:: TypeVarTuple(name, default=typing.NoDefault)
+.. class:: TypeVarTuple(name, *, default=typing.NoDefault)
 
    Type variable tuple. A specialized form of :ref:`type variable <typevar>`
    that enables *variadic* generics.
@@ -1871,8 +1971,8 @@ without the dedicated syntax, as documented below.
    of ``*args``::
 
       def call_soon[*Ts](
-               callback: Callable[[*Ts], None],
-               *args: *Ts
+          callback: Callable[[*Ts], None],
+          *args: *Ts
       ) -> None:
           ...
           callback(*args)
@@ -1960,7 +2060,7 @@ without the dedicated syntax, as documented below.
           return x + y
 
    Without ``ParamSpec``, the simplest way to annotate this previously was to
-   use a :class:`TypeVar` with bound ``Callable[..., Any]``.  However this
+   use a :class:`TypeVar` with upper bound ``Callable[..., Any]``.  However this
    causes two problems:
 
    1. The type checker can't type check the ``inner`` function because
@@ -2173,7 +2273,9 @@ types.
 
    Backward-compatible usage::
 
-       # For creating a generic NamedTuple on Python 3.11 or lower
+       # For creating a generic NamedTuple on Python 3.11
+       T = TypeVar("T")
+
        class Group(NamedTuple, Generic[T]):
            key: T
            group: list[T]
@@ -2498,7 +2600,7 @@ types.
 
       This attribute reflects *only* the value of the ``total`` argument
       to the current ``TypedDict`` class, not whether the class is semantically
-      total. For example, a ``TypedDict`` with ``__total__`` set to True may
+      total. For example, a ``TypedDict`` with ``__total__`` set to ``True`` may
       have keys marked with :data:`NotRequired`, or it may inherit from another
       ``TypedDict`` with ``total=False``. Therefore, it is generally better to use
       :attr:`__required_keys__` and :attr:`__optional_keys__` for introspection.
@@ -2546,7 +2648,7 @@ types.
          ``__required_keys__`` and ``__optional_keys__`` rely on may not work
          properly, and the values of the attributes may be incorrect.
 
-   Support for :data:`ReadOnly` is reflected in the following attributes::
+   Support for :data:`ReadOnly` is reflected in the following attributes:
 
    .. attribute:: __readonly_keys__
 
@@ -2707,7 +2809,7 @@ Functions and decorators
 
    .. seealso::
       `Unreachable Code and Exhaustiveness Checking
-      <https://typing.readthedocs.io/en/latest/source/unreachable.html>`__ has more
+      <https://typing.readthedocs.io/en/latest/guides/unreachable.html>`__ has more
       information about exhaustiveness checking with static typing.
 
    .. versionadded:: 3.11
@@ -3080,35 +3182,38 @@ Introspection helpers
    Return a dictionary containing type hints for a function, method, module
    or class object.
 
-   This is often the same as ``obj.__annotations__``. In addition,
-   forward references encoded as string literals are handled by evaluating
-   them in ``globals``, ``locals`` and (where applicable)
-   :ref:`type parameter <type-params>` namespaces.
-   For a class ``C``, return
-   a dictionary constructed by merging all the ``__annotations__`` along
-   ``C.__mro__`` in reverse order.
-
-   The function recursively replaces all ``Annotated[T, ...]`` with ``T``,
-   unless ``include_extras`` is set to ``True`` (see :class:`Annotated` for
-   more information). For example:
-
-   .. testcode::
-
-       class Student(NamedTuple):
-           name: Annotated[str, 'some marker']
-
-       assert get_type_hints(Student) == {'name': str}
-       assert get_type_hints(Student, include_extras=False) == {'name': str}
-       assert get_type_hints(Student, include_extras=True) == {
-           'name': Annotated[str, 'some marker']
-       }
+   This is often the same as ``obj.__annotations__``, but this function makes
+   the following changes to the annotations dictionary:
+
+   * Forward references encoded as string literals or :class:`ForwardRef`
+     objects are handled by evaluating them in *globalns*, *localns*, and
+     (where applicable) *obj*'s :ref:`type parameter <type-params>` namespace.
+     If *globalns* or *localns* is not given, appropriate namespace
+     dictionaries are inferred from *obj*.
+   * ``None`` is replaced with :class:`types.NoneType`.
+   * If :func:`@no_type_check <no_type_check>` has been applied to *obj*, an
+     empty dictionary is returned.
+   * If *obj* is a class ``C``, the function returns a dictionary that merges
+     annotations from ``C``'s base classes with those on ``C`` directly. This
+     is done by traversing :attr:`C.__mro__ <type.__mro__>` and iteratively
+     combining
+     ``__annotations__`` dictionaries. Annotations on classes appearing
+     earlier in the :term:`method resolution order` always take precedence over
+     annotations on classes appearing later in the method resolution order.
+   * The function recursively replaces all occurrences of ``Annotated[T, ...]``
+     with ``T``, unless *include_extras* is set to ``True`` (see
+     :class:`Annotated` for more information).
+
+   See also :func:`inspect.get_annotations`, a lower-level function that
+   returns annotations more directly.
 
    .. note::
 
-      :func:`get_type_hints` does not work with imported
-      :ref:`type aliases <type-aliases>` that include forward references.
-      Enabling postponed evaluation of annotations (:pep:`563`) may remove
-      the need for most forward references.
+      If any forward references in the annotations of *obj* are not resolvable
+      or are not valid Python code, this function will raise an exception
+      such as :exc:`NameError`. For example, this can happen with imported
+      :ref:`type aliases <type-aliases>` that include forward references,
+      or with names imported under :data:`if TYPE_CHECKING <TYPE_CHECKING>`.
 
    .. versionchanged:: 3.9
       Added ``include_extras`` parameter as part of :pep:`593`.
@@ -3137,6 +3242,7 @@ Introspection helpers
       assert get_origin(str) is None
       assert get_origin(Dict[str, int]) is dict
       assert get_origin(Union[int, str]) is Union
+      assert get_origin(Annotated[str, "metadata"]) is Annotated
       P = ParamSpec('P')
       assert get_origin(P.args) is P
       assert get_origin(P.kwargs) is P
@@ -3314,14 +3420,9 @@ Aliases to built-in types
    Deprecated alias to :class:`dict`.
 
    Note that to annotate arguments, it is preferred
-   to use an abstract collection type such as :class:`Mapping`
+   to use an abstract collection type such as :class:`~collections.abc.Mapping`
    rather than to use :class:`dict` or :class:`!typing.Dict`.
 
-   This type can be used as follows::
-
-      def count_words(text: str) -> Dict[str, int]:
-          ...
-
    .. deprecated:: 3.9
       :class:`builtins.dict <dict>` now supports subscripting (``[]``).
       See :pep:`585` and :ref:`types-genericalias`.
@@ -3331,16 +3432,9 @@ Aliases to built-in types
    Deprecated alias to :class:`list`.
 
    Note that to annotate arguments, it is preferred
-   to use an abstract collection type such as :class:`Sequence` or
-   :class:`Iterable` rather than to use :class:`list` or :class:`!typing.List`.
-
-   This type may be used as follows::
-
-      def vec2[T: (int, float)](x: T, y: T) -> List[T]:
-          return [x, y]
-
-      def keep_positives[T: (int, float)](vector: Sequence[T]) -> List[T]:
-          return [item for item in vector if item > 0]
+   to use an abstract collection type such as
+   :class:`~collections.abc.Sequence` or :class:`~collections.abc.Iterable`
+   rather than to use :class:`list` or :class:`!typing.List`.
 
    .. deprecated:: 3.9
       :class:`builtins.list <list>` now supports subscripting (``[]``).
@@ -3351,8 +3445,8 @@ Aliases to built-in types
    Deprecated alias to :class:`builtins.set <set>`.
 
    Note that to annotate arguments, it is preferred
-   to use an abstract collection type such as :class:`AbstractSet`
-   rather than to use :class:`set` or :class:`!typing.Set`.
+   to use an abstract collection type such as :class:`collections.abc.Set`
+   rather than to use :class:`set` or :class:`typing.Set`.
 
    .. deprecated:: 3.9
       :class:`builtins.set <set>` now supports subscripting (``[]``).
@@ -3548,11 +3642,6 @@ Aliases to container ABCs in :mod:`collections.abc`
 
    Deprecated alias to :class:`collections.abc.Mapping`.
 
-   This type can be used as follows::
-
-      def get_position_in_index(word_list: Mapping[str, int], word: str) -> int:
-          return word_list[word]
-
    .. deprecated:: 3.9
       :class:`collections.abc.Mapping` now supports subscripting (``[]``).
       See :pep:`585` and :ref:`types-genericalias`.
@@ -3616,14 +3705,9 @@ Aliases to asynchronous ABCs in :mod:`collections.abc`
 
    Deprecated alias to :class:`collections.abc.Coroutine`.
 
-   The variance and order of type variables
-   correspond to those of :class:`Generator`, for example::
-
-      from collections.abc import Coroutine
-      c: Coroutine[list[str], str, int]  # Some coroutine defined elsewhere
-      x = c.send('hi')                   # Inferred type of 'x' is list[str]
-      async def bar() -> None:
-          y = await c                    # Inferred type of 'y' is int
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`collections.abc.Coroutine`
+   and ``typing.Coroutine`` in type annotations.
 
    .. versionadded:: 3.5.3
 
@@ -3635,40 +3719,9 @@ Aliases to asynchronous ABCs in :mod:`collections.abc`
 
    Deprecated alias to :class:`collections.abc.AsyncGenerator`.
 
-   An async generator can be annotated by the generic type
-   ``AsyncGenerator[YieldType, SendType]``. For example::
-
-      async def echo_round() -> AsyncGenerator[int, float]:
-          sent = yield 0
-          while sent >= 0.0:
-              rounded = await round(sent)
-              sent = yield rounded
-
-   Unlike normal generators, async generators cannot return a value, so there
-   is no ``ReturnType`` type parameter. As with :class:`Generator`, the
-   ``SendType`` behaves contravariantly.
-
-   The ``SendType`` defaults to :const:`!None`::
-
-      async def infinite_stream(start: int) -> AsyncGenerator[int]:
-          while True:
-              yield start
-              start = await increment(start)
-
-   It is also possible to set this type explicitly::
-
-      async def infinite_stream(start: int) -> AsyncGenerator[int, None]:
-          while True:
-              yield start
-              start = await increment(start)
-
-   Alternatively, annotate your generator as having a return type of
-   either ``AsyncIterable[YieldType]`` or ``AsyncIterator[YieldType]``::
-
-      async def infinite_stream(start: int) -> AsyncIterator[int]:
-          while True:
-              yield start
-              start = await increment(start)
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`collections.abc.AsyncGenerator`
+   and ``typing.AsyncGenerator`` in type annotations.
 
    .. versionadded:: 3.6.1
 
@@ -3750,40 +3803,9 @@ Aliases to other ABCs in :mod:`collections.abc`
 
    Deprecated alias to :class:`collections.abc.Generator`.
 
-   A generator can be annotated by the generic type
-   ``Generator[YieldType, SendType, ReturnType]``. For example::
-
-      def echo_round() -> Generator[int, float, str]:
-          sent = yield 0
-          while sent >= 0:
-              sent = yield round(sent)
-          return 'Done'
-
-   Note that unlike many other generics in the typing module, the ``SendType``
-   of :class:`Generator` behaves contravariantly, not covariantly or
-   invariantly.
-
-   The ``SendType`` and ``ReturnType`` parameters default to :const:`!None`::
-
-      def infinite_stream(start: int) -> Generator[int]:
-          while True:
-              yield start
-              start += 1
-
-   It is also possible to set these types explicitly::
-
-      def infinite_stream(start: int) -> Generator[int, None, None]:
-          while True:
-              yield start
-              start += 1
-
-   Alternatively, annotate your generator as having a return type of
-   either ``Iterable[YieldType]`` or ``Iterator[YieldType]``::
-
-      def infinite_stream(start: int) -> Iterator[int]:
-          while True:
-              yield start
-              start += 1
+   See :ref:`annotating-generators-and-coroutines`
+   for details on using :class:`collections.abc.Generator`
+   and ``typing.Generator`` in type annotations.
 
    .. deprecated:: 3.9
       :class:`collections.abc.Generator` now supports subscripting (``[]``).
diff --git a/Doc/library/unicodedata.rst b/Doc/library/unicodedata.rst
index 7db47d48022a0e..37dc37513fa15d 100644
--- a/Doc/library/unicodedata.rst
+++ b/Doc/library/unicodedata.rst
@@ -1,5 +1,5 @@
-:mod:`unicodedata` --- Unicode Database
-=======================================
+:mod:`!unicodedata` --- Unicode Database
+========================================
 
 .. module:: unicodedata
    :synopsis: Access the Unicode Database.
diff --git a/Doc/library/unittest.mock-examples.rst b/Doc/library/unittest.mock-examples.rst
index f2bdde80bdbd64..00cc9bfc0a5f2b 100644
--- a/Doc/library/unittest.mock-examples.rst
+++ b/Doc/library/unittest.mock-examples.rst
@@ -1,5 +1,5 @@
-:mod:`unittest.mock` --- getting started
-========================================
+:mod:`!unittest.mock` --- getting started
+=========================================
 
 .. moduleauthor:: Michael Foord <michael@python.org>
 .. currentmodule:: unittest.mock
diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
index ee4c7b2ed252b0..514c6b7e615215 100644
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -1,6 +1,5 @@
-
-:mod:`unittest.mock` --- mock object library
-============================================
+:mod:`!unittest.mock` --- mock object library
+=============================================
 
 .. module:: unittest.mock
    :synopsis: Mock object library.
@@ -69,7 +68,7 @@ available, and then make assertions about how they have been used:
     3
     >>> thing.method.assert_called_with(3, 4, 5, key='value')
 
-:attr:`side_effect` allows you to perform side effects, including raising an
+:attr:`~Mock.side_effect` allows you to perform side effects, including raising an
 exception when a mock is called:
 
    >>> from unittest.mock import Mock
@@ -240,7 +239,7 @@ the *new_callable* argument to :func:`patch`.
       Accessing any attribute not in this list will raise an :exc:`AttributeError`.
 
       If *spec* is an object (rather than a list of strings) then
-      :attr:`~instance.__class__` returns the class of the spec object. This
+      :attr:`~object.__class__` returns the class of the spec object. This
       allows mocks to pass :func:`isinstance` tests.
 
     * *spec_set*: A stricter variant of *spec*. If used, attempting to *set*
@@ -415,13 +414,13 @@ the *new_callable* argument to :func:`patch`.
 
         This can be useful where you want to make a series of assertions that
         reuse the same object. Note that :meth:`reset_mock` *doesn't* clear the
-        return value, :attr:`side_effect` or any child attributes you have
+        :attr:`return_value`, :attr:`side_effect` or any child attributes you have
         set using normal assignment by default. In case you want to reset
-        *return_value* or :attr:`side_effect`, then pass the corresponding
+        :attr:`return_value` or :attr:`side_effect`, then pass the corresponding
         parameter as ``True``. Child mocks and the return value mock
         (if any) are reset as well.
 
-        .. note:: *return_value*, and :attr:`side_effect` are keyword-only
+        .. note:: *return_value*, and *side_effect* are keyword-only
                   arguments.
 
 
@@ -738,8 +737,8 @@ the *new_callable* argument to :func:`patch`.
 
     .. attribute:: __class__
 
-        Normally the :attr:`__class__` attribute of an object will return its type.
-        For a mock object with a :attr:`spec`, ``__class__`` returns the spec class
+        Normally the :attr:`!__class__` attribute of an object will return its type.
+        For a mock object with a :attr:`!spec`, :attr:`!__class__` returns the spec class
         instead. This allows mock objects to pass :func:`isinstance` tests for the
         object they are replacing / masquerading as:
 
@@ -747,7 +746,7 @@ the *new_callable* argument to :func:`patch`.
             >>> isinstance(mock, int)
             True
 
-        :attr:`__class__` is assignable to, this allows a mock to pass an
+        :attr:`!__class__` is assignable to, this allows a mock to pass an
         :func:`isinstance` check without forcing you to use a spec:
 
             >>> mock = Mock()
@@ -761,8 +760,8 @@ the *new_callable* argument to :func:`patch`.
     meaning of :class:`Mock`, with the exception of *return_value* and *side_effect*
     which have no meaning on a non-callable mock.
 
-Mock objects that use a class or an instance as a :attr:`spec` or
-:attr:`spec_set` are able to pass :func:`isinstance` tests:
+Mock objects that use a class or an instance as a :attr:`!spec` or
+:attr:`!spec_set` are able to pass :func:`isinstance` tests:
 
     >>> mock = Mock(spec=SomeClass)
     >>> isinstance(mock, SomeClass)
@@ -861,6 +860,20 @@ object::
     3
     >>> p.assert_called_once_with()
 
+.. caution::
+
+    If an :exc:`AttributeError` is raised by :class:`PropertyMock`,
+    it will be interpreted as a missing descriptor and
+    :meth:`~object.__getattr__` will be called on the parent mock::
+
+        >>> m = MagicMock()
+        >>> no_attribute = PropertyMock(side_effect=AttributeError)
+        >>> type(m).my_property = no_attribute
+        >>> m.my_property
+        <MagicMock name='mock.my_property' id='140165240345424'>
+
+    See :meth:`~object.__getattr__` for details.
+
 
 .. class:: AsyncMock(spec=None, side_effect=None, return_value=DEFAULT, wraps=None, name=None, spec_set=None, unsafe=False, **kwargs)
 
@@ -1162,7 +1175,7 @@ Calls made to the object will be recorded in the attributes
 like :attr:`~Mock.call_args` and :attr:`~Mock.call_args_list`.
 
 If :attr:`~Mock.side_effect` is set then it will be called after the call has
-been recorded, so if :attr:`side_effect` raises an exception the call is still
+been recorded, so if :attr:`!side_effect` raises an exception the call is still
 recorded.
 
 The simplest way to make a mock raise an exception when called is to make
@@ -1183,8 +1196,8 @@ The simplest way to make a mock raise an exception when called is to make
         >>> m.mock_calls
         [call(1, 2, 3), call('two', 'three', 'four')]
 
-If :attr:`side_effect` is a function then whatever that function returns is what
-calls to the mock return. The :attr:`side_effect` function is called with the
+If :attr:`~Mock.side_effect` is a function then whatever that function returns is what
+calls to the mock return. The :attr:`!side_effect` function is called with the
 same arguments as the mock. This allows you to vary the return value of the
 call dynamically, based on the input:
 
@@ -1201,7 +1214,7 @@ call dynamically, based on the input:
 
 If you want the mock to still return the default return value (a new mock), or
 any set return value, then there are two ways of doing this. Either return
-:attr:`mock.return_value` from inside :attr:`side_effect`, or return :data:`DEFAULT`:
+:attr:`~Mock.return_value` from inside :attr:`~Mock.side_effect`, or return :data:`DEFAULT`:
 
         >>> m = MagicMock()
         >>> def side_effect(*args, **kwargs):
@@ -1218,8 +1231,8 @@ any set return value, then there are two ways of doing this. Either return
         >>> m()
         3
 
-To remove a :attr:`side_effect`, and return to the default behaviour, set the
-:attr:`side_effect` to ``None``:
+To remove a :attr:`~Mock.side_effect`, and return to the default behaviour, set the
+:attr:`!side_effect` to ``None``:
 
         >>> m = MagicMock(return_value=6)
         >>> def side_effect(*args, **kwargs):
@@ -1232,7 +1245,7 @@ To remove a :attr:`side_effect`, and return to the default behaviour, set the
         >>> m()
         6
 
-The :attr:`side_effect` can also be any iterable object. Repeated calls to the mock
+The :attr:`~Mock.side_effect` can also be any iterable object. Repeated calls to the mock
 will return values from the iterable (until the iterable is exhausted and
 a :exc:`StopIteration` is raised):
 
@@ -1273,7 +1286,7 @@ objects of any type.
 
 You may want a mock object to return ``False`` to a :func:`hasattr` call, or raise an
 :exc:`AttributeError` when an attribute is fetched. You can do this by providing
-an object as a :attr:`spec` for a mock, but that isn't always convenient.
+an object as a :attr:`!spec` for a mock, but that isn't always convenient.
 
 You "block" attributes by deleting them. Once deleted, accessing an attribute
 will raise an :exc:`AttributeError`.
@@ -1442,7 +1455,7 @@ patch
           If you are patching builtins in a module then you don't
           need to pass ``create=True``, it will be added by default.
 
-    Patch can be used as a :class:`TestCase` class decorator. It works by
+    Patch can be used as a :class:`~unittest.TestCase` class decorator. It works by
     decorating each test method in the class. This reduces the boilerplate
     code when your test methods share a common patchings set. :func:`patch` finds
     tests by looking for method names that start with ``patch.TEST_PREFIX``.
@@ -1480,7 +1493,7 @@ If the class is instantiated multiple times you could use
 can set the *return_value* to be anything you want.
 
 To configure return values on methods of *instances* on the patched class
-you must do this on the :attr:`return_value`. For example::
+you must do this on the :attr:`~Mock.return_value`. For example::
 
     >>> class Class:
     ...     def method(self):
@@ -1801,13 +1814,13 @@ context manager is a dictionary where created mocks are keyed by name::
 patch methods: start and stop
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-All the patchers have :meth:`start` and :meth:`stop` methods. These make it simpler to do
+All the patchers have :meth:`!start` and :meth:`!stop` methods. These make it simpler to do
 patching in ``setUp`` methods or where you want to do multiple patches without
 nesting decorators or with statements.
 
 To use them call :func:`patch`, :func:`patch.object` or :func:`patch.dict` as
 normal and keep a reference to the returned ``patcher`` object. You can then
-call :meth:`start` to put the patch in place and :meth:`stop` to undo it.
+call :meth:`!start` to put the patch in place and :meth:`!stop` to undo it.
 
 If you are using :func:`patch` to create a mock for you then it will be returned by
 the call to ``patcher.start``. ::
@@ -1824,7 +1837,7 @@ the call to ``patcher.start``. ::
 
 
 A typical use case for this might be for doing multiple patches in the ``setUp``
-method of a :class:`TestCase`::
+method of a :class:`~unittest.TestCase`::
 
     >>> class MyTest(unittest.TestCase):
     ...     def setUp(self):
@@ -2497,7 +2510,7 @@ behaviour you can switch it off by setting the module level switch
 
 Alternatively you can just use ``vars(my_mock)`` (instance members) and
 ``dir(type(my_mock))`` (type members) to bypass the filtering irrespective of
-:const:`mock.FILTER_DIR`.
+:const:`FILTER_DIR`.
 
 
 mock_open
@@ -2512,7 +2525,7 @@ mock_open
    default) then a :class:`MagicMock` will be created for you, with the API limited
    to methods or attributes available on standard file handles.
 
-   *read_data* is a string for the :meth:`~io.IOBase.read`,
+   *read_data* is a string for the :meth:`~io.RawIOBase.read`,
    :meth:`~io.IOBase.readline`, and :meth:`~io.IOBase.readlines` methods
    of the file handle to return.  Calls to those methods will take data from
    *read_data* until it is depleted.  The mock of these methods is pretty
@@ -2524,7 +2537,7 @@ mock_open
 
    .. versionchanged:: 3.4
       Added :meth:`~io.IOBase.readline` and :meth:`~io.IOBase.readlines` support.
-      The mock of :meth:`~io.IOBase.read` changed to consume *read_data* rather
+      The mock of :meth:`~io.RawIOBase.read` changed to consume *read_data* rather
       than returning it on each call.
 
    .. versionchanged:: 3.5
@@ -2576,7 +2589,7 @@ And for reading files::
 Autospeccing
 ~~~~~~~~~~~~
 
-Autospeccing is based on the existing :attr:`spec` feature of mock. It limits the
+Autospeccing is based on the existing :attr:`!spec` feature of mock. It limits the
 api of mocks to the api of an original object (the spec), but it is recursive
 (implemented lazily) so that attributes of mocks only have the same api as
 the attributes of the spec. In addition mocked functions / methods have the
@@ -2585,48 +2598,24 @@ called incorrectly.
 
 Before I explain how auto-speccing works, here's why it is needed.
 
-:class:`Mock` is a very powerful and flexible object, but it suffers from two flaws
-when used to mock out objects from a system under test. One of these flaws is
-specific to the :class:`Mock` api and the other is a more general problem with using
-mock objects.
-
-First the problem specific to :class:`Mock`. :class:`Mock` has two assert methods that are
-extremely handy: :meth:`~Mock.assert_called_with` and
-:meth:`~Mock.assert_called_once_with`.
-
-    >>> mock = Mock(name='Thing', return_value=None)
-    >>> mock(1, 2, 3)
-    >>> mock.assert_called_once_with(1, 2, 3)
-    >>> mock(1, 2, 3)
-    >>> mock.assert_called_once_with(1, 2, 3)
-    Traceback (most recent call last):
-     ...
-    AssertionError: Expected 'mock' to be called once. Called 2 times.
-
-Because mocks auto-create attributes on demand, and allow you to call them
-with arbitrary arguments, if you misspell one of these assert methods then
-your assertion is gone:
-
-.. code-block:: pycon
-
-    >>> mock = Mock(name='Thing', return_value=None)
-    >>> mock(1, 2, 3)
-    >>> mock.assret_called_once_with(4, 5, 6)  # Intentional typo!
+:class:`Mock` is a very powerful and flexible object, but it suffers from a flaw which
+is general to mocking. If you refactor some of your code, rename members and so on, any
+tests for code that is still using the *old api* but uses mocks instead of the real
+objects will still pass. This means your tests can all pass even though your code is
+broken.
 
-Your tests can pass silently and incorrectly because of the typo.
+.. versionchanged:: 3.5
 
-The second issue is more general to mocking. If you refactor some of your
-code, rename members and so on, any tests for code that is still using the
-*old api* but uses mocks instead of the real objects will still pass. This
-means your tests can all pass even though your code is broken.
+    Before 3.5, tests with a typo in the word assert would silently pass when they should
+    raise an error. You can still achieve this behavior by passing ``unsafe=True`` to Mock.
 
 Note that this is another reason why you need integration tests as well as
 unit tests. Testing everything in isolation is all fine and dandy, but if you
 don't test how your units are "wired together" there is still lots of room
 for bugs that tests might have caught.
 
-:mod:`mock` already provides a feature to help with this, called speccing. If you
-use a class or instance as the :attr:`spec` for a mock then you can only access
+:mod:`unittest.mock` already provides a feature to help with this, called speccing. If you
+use a class or instance as the :attr:`!spec` for a mock then you can only access
 attributes on the mock that exist on the real class:
 
     >>> from urllib import request
@@ -2664,7 +2653,7 @@ Here's an example of it in use::
     >>> mock_request.Request
     <MagicMock name='request.Request' spec='Request' id='...'>
 
-You can see that :class:`request.Request` has a spec. :class:`request.Request` takes two
+You can see that :class:`!request.Request` has a spec. :class:`!request.Request` takes two
 arguments in the constructor (one of which is *self*). Here's what happens if
 we try to call it incorrectly::
 
@@ -2680,8 +2669,8 @@ specced mocks)::
     >>> req
     <NonCallableMagicMock name='request.Request()' spec='Request' id='...'>
 
-:class:`Request` objects are not callable, so the return value of instantiating our
-mocked out :class:`request.Request` is a non-callable mock. With the spec in place
+:class:`!Request` objects are not callable, so the return value of instantiating our
+mocked out :class:`!request.Request` is a non-callable mock. With the spec in place
 any typos in our asserts will raise the correct error::
 
     >>> req.add_header('spam', 'eggs')
@@ -2833,8 +2822,8 @@ Sealing mocks
     .. versionadded:: 3.7
 
 
-Order of precedence of :attr:`side_effect`, :attr:`return_value` and *wraps*
-----------------------------------------------------------------------------
+Order of precedence of :attr:`!side_effect`, :attr:`!return_value` and *wraps*
+------------------------------------------------------------------------------
 
 The order of their precedence is:
 
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 3af29f19c802c7..c49aba69b12126 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1,5 +1,5 @@
-:mod:`unittest` --- Unit testing framework
-==========================================
+:mod:`!unittest` --- Unit testing framework
+===========================================
 
 .. module:: unittest
    :synopsis: Unit testing framework for Python.
@@ -2316,8 +2316,8 @@ Loading and running tests
    (see :ref:`Warning control <using-on-warnings>`),
    otherwise it will be set to ``'default'``.
 
-   Calling ``main`` actually returns an instance of the ``TestProgram`` class.
-   This stores the result of the tests run as the ``result`` attribute.
+   Calling ``main`` returns an object with the ``result`` attribute that contains
+   the result of the tests run as a :class:`unittest.TestResult`.
 
    .. versionchanged:: 3.1
       The *exit* parameter was added.
@@ -2529,7 +2529,7 @@ Signal Handling
 .. versionadded:: 3.2
 
 The :option:`-c/--catch <unittest -c>` command-line option to unittest,
-along with the ``catchbreak`` parameter to :func:`unittest.main()`, provide
+along with the ``catchbreak`` parameter to :func:`unittest.main`, provide
 more friendly handling of control-C during a test run. With catch break
 behavior enabled control-C will allow the currently running test to complete,
 and the test run will then end and report all the results so far. A second
diff --git a/Doc/library/urllib.error.rst b/Doc/library/urllib.error.rst
index facb11f42a40c5..1686ddd09caa48 100644
--- a/Doc/library/urllib.error.rst
+++ b/Doc/library/urllib.error.rst
@@ -1,5 +1,5 @@
-:mod:`urllib.error` --- Exception classes raised by urllib.request
-==================================================================
+:mod:`!urllib.error` --- Exception classes raised by urllib.request
+===================================================================
 
 .. module:: urllib.error
    :synopsis: Exception classes raised by urllib.request.
diff --git a/Doc/library/urllib.parse.rst b/Doc/library/urllib.parse.rst
index 59fb14960ba9f6..69daa381013ae0 100644
--- a/Doc/library/urllib.parse.rst
+++ b/Doc/library/urllib.parse.rst
@@ -1,5 +1,5 @@
-:mod:`urllib.parse` --- Parse URLs into components
-==================================================
+:mod:`!urllib.parse` --- Parse URLs into components
+===================================================
 
 .. module:: urllib.parse
    :synopsis: Parse URLs into or assemble them from components.
@@ -22,11 +22,19 @@ to an absolute URL given a "base URL."
 
 The module has been designed to match the internet RFC on Relative Uniform
 Resource Locators. It supports the following URL schemes: ``file``, ``ftp``,
-``gopher``, ``hdl``, ``http``, ``https``, ``imap``, ``mailto``, ``mms``,
+``gopher``, ``hdl``, ``http``, ``https``, ``imap``, ``itms-services``, ``mailto``, ``mms``,
 ``news``, ``nntp``, ``prospero``, ``rsync``, ``rtsp``, ``rtsps``, ``rtspu``,
 ``sftp``, ``shttp``, ``sip``, ``sips``, ``snews``, ``svn``, ``svn+ssh``,
 ``telnet``, ``wais``, ``ws``, ``wss``.
 
+.. impl-detail::
+
+   The inclusion of the ``itms-services`` URL scheme can prevent an app from
+   passing Apple's App Store review process for the macOS and iOS App Stores.
+   Handling for the ``itms-services`` scheme is always removed on iOS; on
+   macOS, it *may* be removed if CPython has been built with the
+   :option:`--with-app-store-compliance` option.
+
 The :mod:`urllib.parse` module defines functions that fall into two broad
 categories: URL parsing and URL quoting. These are covered in detail in
 the following sections.
@@ -173,7 +181,7 @@ or on combining URL components into a URL string.
       Added IPv6 URL parsing capabilities.
 
    .. versionchanged:: 3.3
-      The fragment is now parsed for all URL schemes (unless *allow_fragment* is
+      The fragment is now parsed for all URL schemes (unless *allow_fragments* is
       false), in accordance with :rfc:`3986`.  Previously, an allowlist of
       schemes that support fragments existed.
 
@@ -395,6 +403,15 @@ or on combining URL components into a URL string.
       If you do not want that behavior, preprocess the *url* with :func:`urlsplit` and
       :func:`urlunsplit`, removing possible *scheme* and *netloc* parts.
 
+   .. warning::
+
+      Because an absolute URL may be passed as the ``url`` parameter, it is
+      generally **not secure** to use ``urljoin`` with an attacker-controlled
+      ``url``. For example in,
+      ``urljoin("https://website.com/users/", username)``, if ``username`` can
+      contain an absolute URL, the result of ``urljoin`` will be the absolute
+      URL.
+
 
    .. versionchanged:: 3.5
 
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst
index c1e60a46774704..46e0f6275aee53 100644
--- a/Doc/library/urllib.request.rst
+++ b/Doc/library/urllib.request.rst
@@ -1,5 +1,5 @@
-:mod:`urllib.request` --- Extensible library for opening URLs
-=============================================================
+:mod:`!urllib.request` --- Extensible library for opening URLs
+==============================================================
 
 .. module:: urllib.request
    :synopsis: Extensible library for opening URLs.
@@ -149,16 +149,28 @@ The :mod:`urllib.request` module defines the following functions:
 
 .. function:: pathname2url(path)
 
-   Convert the pathname *path* from the local syntax for a path to the form used in
-   the path component of a URL.  This does not produce a complete URL.  The return
-   value will already be quoted using the :func:`~urllib.parse.quote` function.
+   Convert the given local path to a ``file:`` URL. This function uses
+   :func:`~urllib.parse.quote` function to encode the path. For historical
+   reasons, the return value omits the ``file:`` scheme prefix. This example
+   shows the function being used on Windows::
 
+      >>> from urllib.request import pathname2url
+      >>> path = 'C:\\Program Files'
+      >>> 'file:' + pathname2url(path)
+      'file:///C:/Program%20Files'
 
-.. function:: url2pathname(path)
 
-   Convert the path component *path* from a percent-encoded URL to the local syntax for a
-   path.  This does not accept a complete URL.  This function uses
-   :func:`~urllib.parse.unquote` to decode *path*.
+.. function:: url2pathname(url)
+
+   Convert the given ``file:`` URL to a local path. This function uses
+   :func:`~urllib.parse.unquote` to decode the URL. For historical reasons,
+   the given value *must* omit the ``file:`` scheme prefix. This example shows
+   the function being used on Windows::
+
+      >>> from urllib.request import url2pathname
+      >>> url = 'file:///C:/Program%20Files'
+      >>> url2pathname(url.removeprefix('file:'))
+      'C:\\Program Files'
 
 .. function:: getproxies()
 
@@ -218,7 +230,7 @@ The following classes are provided:
 
    An appropriate ``Content-Type`` header should be included if the *data*
    argument is present.  If this header has not been provided and *data*
-   is not None, ``Content-Type: application/x-www-form-urlencoded`` will
+   is not ``None``, ``Content-Type: application/x-www-form-urlencoded`` will
    be added as a default.
 
    The next two arguments are only of interest for correct handling
@@ -241,7 +253,7 @@ The following classes are provided:
 
    *method* should be a string that indicates the HTTP request method that
    will be used (e.g. ``'HEAD'``).  If provided, its value is stored in the
-   :attr:`~Request.method` attribute and is used by :meth:`get_method()`.
+   :attr:`~Request.method` attribute and is used by :meth:`get_method`.
    The default is ``'GET'`` if *data* is ``None`` or ``'POST'`` otherwise.
    Subclasses may indicate a different default method by setting the
    :attr:`~Request.method` attribute in the class itself.
@@ -1092,7 +1104,7 @@ FileHandler Objects
 
    .. versionchanged:: 3.2
       This method is applicable only for local hostnames.  When a remote
-      hostname is given, an :exc:`~urllib.error.URLError` is raised.
+      hostname is given, a :exc:`~urllib.error.URLError` is raised.
 
 
 .. _data-handler-objects:
@@ -1107,7 +1119,7 @@ DataHandler Objects
    ignores white spaces in base64 encoded data URLs so the URL may be wrapped
    in whatever source file it comes from. But even though some browsers don't
    mind about a missing padding at the end of a base64 encoded data URL, this
-   implementation will raise an :exc:`ValueError` in that case.
+   implementation will raise a :exc:`ValueError` in that case.
 
 
 .. _ftp-handler-objects:
diff --git a/Doc/library/urllib.robotparser.rst b/Doc/library/urllib.robotparser.rst
index b5a49d9c592387..016fcdc75da67a 100644
--- a/Doc/library/urllib.robotparser.rst
+++ b/Doc/library/urllib.robotparser.rst
@@ -1,5 +1,5 @@
-:mod:`urllib.robotparser` ---  Parser for robots.txt
-====================================================
+:mod:`!urllib.robotparser` ---  Parser for robots.txt
+=====================================================
 
 .. module:: urllib.robotparser
    :synopsis: Load a robots.txt file and answer questions about
diff --git a/Doc/library/urllib.rst b/Doc/library/urllib.rst
index 624e164625556a..7d9f39ef070fc3 100644
--- a/Doc/library/urllib.rst
+++ b/Doc/library/urllib.rst
@@ -1,5 +1,5 @@
-:mod:`urllib` --- URL handling modules
-======================================
+:mod:`!urllib` --- URL handling modules
+=======================================
 
 .. module:: urllib
 
diff --git a/Doc/library/uu.rst b/Doc/library/uu.rst
new file mode 100644
index 00000000000000..0636d180294d47
--- /dev/null
+++ b/Doc/library/uu.rst
@@ -0,0 +1,15 @@
+:mod:`!uu` --- Encode and decode uuencode files
+===============================================
+
+.. module:: uu
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!uu` module was
+`Python 3.12 <https://docs.python.org/3.12/library/uu.html>`_.
diff --git a/Doc/library/uuid.rst b/Doc/library/uuid.rst
index e2d231da38fd9a..0f2d7820cb25c8 100644
--- a/Doc/library/uuid.rst
+++ b/Doc/library/uuid.rst
@@ -1,5 +1,5 @@
-:mod:`uuid` --- UUID objects according to :rfc:`4122`
-=====================================================
+:mod:`!uuid` --- UUID objects according to :rfc:`4122`
+======================================================
 
 .. module:: uuid
    :synopsis: UUID objects (universally unique identifiers) according to RFC 4122
diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
index cdd1fde2e44b00..5205c6c211d9bf 100644
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -1,5 +1,5 @@
-:mod:`venv` --- Creation of virtual environments
-================================================
+:mod:`!venv` --- Creation of virtual environments
+=================================================
 
 .. module:: venv
    :synopsis: Creation of virtual environments.
@@ -37,14 +37,14 @@ A virtual environment is (amongst other things):
   are by default isolated from software in other virtual environments and Python
   interpreters and libraries installed in the operating system.
 
-* Contained in a directory, conventionally either named ``venv`` or ``.venv`` in
+* Contained in a directory, conventionally named ``.venv`` or ``venv`` in
   the project directory, or under a container directory for lots of virtual
   environments, such as ``~/.virtualenvs``.
 
 * Not checked into source control systems such as Git.
 
 * Considered as disposable -- it should be simple to delete and recreate it from
-  scratch. You don't place any project code in the environment
+  scratch. You don't place any project code in the environment.
 
 * Not considered as movable or copyable -- you just recreate the same
   environment in the target location.
@@ -56,12 +56,132 @@ See :pep:`405` for more background on Python virtual environments.
    `Python Packaging User Guide: Creating and using virtual environments
    <https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#create-and-use-virtual-environments>`__
 
-.. include:: ../includes/wasm-ios-notavail.rst
+.. include:: ../includes/wasm-mobile-notavail.rst
 
 Creating virtual environments
 -----------------------------
 
-.. include:: /using/venv-create.inc
+:ref:`Virtual environments <venv-def>` are created by executing the ``venv``
+module:
+
+.. code-block:: shell
+
+    python -m venv /path/to/new/virtual/environment
+
+This creates the target directory (including parent directories as needed)
+and places a :file:`pyvenv.cfg` file in it with a ``home`` key
+pointing to the Python installation from which the command was run.
+It also creates a :file:`bin` (or :file:`Scripts` on Windows) subdirectory
+containing a copy or symlink of the Python executable
+(as appropriate for the platform or arguments used at environment creation time).
+It also creates a :file:`lib/pythonX.Y/site-packages` subdirectory
+(on Windows, this is :file:`Lib\site-packages`).
+If an existing directory is specified, it will be re-used.
+
+.. versionchanged:: 3.5
+   The use of ``venv`` is now recommended for creating virtual environments.
+
+.. deprecated-removed:: 3.6 3.8
+   :program:`pyvenv` was the recommended tool for creating virtual environments
+   for Python 3.3 and 3.4, and replaced in 3.5 by executing ``venv`` directly.
+
+.. highlight:: none
+
+On Windows, invoke the ``venv`` command as follows:
+
+.. code-block:: ps1con
+
+   PS> python -m venv C:\path\to\new\virtual\environment
+
+The command, if run with ``-h``, will show the available options::
+
+   usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
+               [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
+               [--without-scm-ignore-files]
+               ENV_DIR [ENV_DIR ...]
+
+   Creates virtual Python environments in one or more target directories.
+
+   positional arguments:
+     ENV_DIR               A directory to create the environment in.
+
+   options:
+     -h, --help            show this help message and exit
+     --system-site-packages
+                           Give the virtual environment access to the system
+                           site-packages dir.
+     --symlinks            Try to use symlinks rather than copies, when
+                           symlinks are not the default for the platform.
+     --copies              Try to use copies rather than symlinks, even when
+                           symlinks are the default for the platform.
+     --clear               Delete the contents of the environment directory
+                           if it already exists, before environment creation.
+     --upgrade             Upgrade the environment directory to use this
+                           version of Python, assuming Python has been
+                           upgraded in-place.
+     --without-pip         Skips installing or upgrading pip in the virtual
+                           environment (pip is bootstrapped by default)
+     --prompt PROMPT       Provides an alternative prompt prefix for this
+                           environment.
+     --upgrade-deps        Upgrade core dependencies (pip) to the latest
+                           version in PyPI
+     --without-scm-ignore-files
+                           Skips adding SCM ignore files to the environment
+                           directory (Git is supported by default).
+
+   Once an environment has been created, you may wish to activate it, e.g. by
+   sourcing an activate script in its bin directory.
+
+
+.. versionchanged:: 3.4
+   Installs pip by default, added the ``--without-pip``  and ``--copies``
+   options.
+
+.. versionchanged:: 3.4
+   In earlier versions, if the target directory already existed, an error was
+   raised, unless the ``--clear`` or ``--upgrade`` option was provided.
+
+.. versionchanged:: 3.9
+   Add ``--upgrade-deps`` option to upgrade pip + setuptools to the latest on PyPI.
+
+.. versionchanged:: 3.12
+
+   ``setuptools`` is no longer a core venv dependency.
+
+.. versionchanged:: 3.13
+
+   Added the ``--without-scm-ignore-files`` option.
+.. versionchanged:: 3.13
+   ``venv`` now creates a :file:`.gitignore` file for Git by default.
+
+.. note::
+   While symlinks are supported on Windows, they are not recommended. Of
+   particular note is that double-clicking ``python.exe`` in File Explorer
+   will resolve the symlink eagerly and ignore the virtual environment.
+
+.. note::
+   On Microsoft Windows, it may be required to enable the ``Activate.ps1``
+   script by setting the execution policy for the user. You can do this by
+   issuing the following PowerShell command:
+
+   .. code-block:: powershell
+
+      PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+   See `About Execution Policies
+   <https://go.microsoft.com/fwlink/?LinkID=135170>`_
+   for more information.
+
+The created :file:`pyvenv.cfg` file also includes the
+``include-system-site-packages`` key, set to ``true`` if ``venv`` is
+run with the ``--system-site-packages`` option, ``false`` otherwise.
+
+Unless the ``--without-pip`` option is given, :mod:`ensurepip` will be
+invoked to bootstrap ``pip`` into the virtual environment.
+
+Multiple paths can be given to ``venv``, in which case an identical virtual
+environment will be created, according to the given options, at each provided
+path.
 
 .. _venv-explanation:
 
@@ -95,7 +215,7 @@ containing the virtual environment):
 |             +------------+--------------------------------------------------+
 |             | csh/tcsh   | :samp:`$ source {<venv>}/bin/activate.csh`       |
 |             +------------+--------------------------------------------------+
-|             | PowerShell | :samp:`$ {<venv>}/bin/Activate.ps1`              |
+|             | pwsh       | :samp:`$ {<venv>}/bin/Activate.ps1`              |
 +-------------+------------+--------------------------------------------------+
 | Windows     | cmd.exe    | :samp:`C:\\> {<venv>}\\Scripts\\activate.bat`    |
 |             +------------+--------------------------------------------------+
@@ -117,7 +237,7 @@ should be runnable without activating it.
 
 In order to achieve this, scripts installed into virtual environments have
 a "shebang" line which points to the environment's Python interpreter,
-i.e. :samp:`#!/{<path-to-venv>}/bin/python`.
+:samp:`#!/{<path-to-venv>}/bin/python`.
 This means that the script will run with that interpreter regardless of the
 value of :envvar:`PATH`. On Windows, "shebang" line processing is supported if
 you have the :ref:`launcher` installed. Thus, double-clicking an installed
@@ -168,31 +288,31 @@ creation according to their needs, the :class:`EnvBuilder` class.
     The :class:`EnvBuilder` class accepts the following keyword arguments on
     instantiation:
 
-    * ``system_site_packages`` -- a Boolean value indicating that the system Python
+    * *system_site_packages* -- a boolean value indicating that the system Python
       site-packages should be available to the environment (defaults to ``False``).
 
-    * ``clear`` -- a Boolean value which, if true, will delete the contents of
+    * *clear* -- a boolean value which, if true, will delete the contents of
       any existing target directory, before creating the environment.
 
-    * ``symlinks`` -- a Boolean value indicating whether to attempt to symlink the
+    * *symlinks* -- a boolean value indicating whether to attempt to symlink the
       Python binary rather than copying.
 
-    * ``upgrade`` -- a Boolean value which, if true, will upgrade an existing
+    * *upgrade* -- a boolean value which, if true, will upgrade an existing
       environment with the running Python - for use when that Python has been
       upgraded in-place (defaults to ``False``).
 
-    * ``with_pip`` -- a Boolean value which, if true, ensures pip is
+    * *with_pip* -- a boolean value which, if true, ensures pip is
       installed in the virtual environment. This uses :mod:`ensurepip` with
       the ``--default-pip`` option.
 
-    * ``prompt`` -- a String to be used after virtual environment is activated
+    * *prompt* -- a string to be used after virtual environment is activated
       (defaults to ``None`` which means directory name of the environment would
       be used). If the special string ``"."`` is provided, the basename of the
       current directory is used as the prompt.
 
-    * ``upgrade_deps`` -- Update the base venv modules to the latest on PyPI
+    * *upgrade_deps* -- Update the base venv modules to the latest on PyPI
 
-    * ``scm_ignore_files`` -- Create ignore files based for the specified source
+    * *scm_ignore_files* -- Create ignore files based for the specified source
       control managers (SCM) in the iterable. Support is defined by having a
       method named ``create_{scm}_ignore_file``. The only value supported by
       default is ``"git"`` via :meth:`create_git_ignore_file`.
@@ -210,10 +330,7 @@ creation according to their needs, the :class:`EnvBuilder` class.
     .. versionchanged:: 3.13
        Added the ``scm_ignore_files`` parameter
 
-    Creators of third-party virtual environment tools will be free to use the
-    provided :class:`EnvBuilder` class as a base class.
-
-    The returned env-builder is an object which has a method, ``create``:
+    :class:`EnvBuilder` may be used as a base class.
 
     .. method:: create(env_dir)
 
@@ -313,14 +430,14 @@ creation according to their needs, the :class:`EnvBuilder` class.
 
     .. method:: upgrade_dependencies(context)
 
-       Upgrades the core venv dependency packages (currently ``pip``)
+       Upgrades the core venv dependency packages (currently :pypi:`pip`)
        in the environment. This is done by shelling out to the
        ``pip`` executable in the environment.
 
        .. versionadded:: 3.9
        .. versionchanged:: 3.12
 
-          ``setuptools`` is no longer a core venv dependency.
+          :pypi:`setuptools` is no longer a core venv dependency.
 
     .. method:: post_setup(context)
 
@@ -328,25 +445,15 @@ creation according to their needs, the :class:`EnvBuilder` class.
         implementations to pre-install packages in the virtual environment or
         perform other post-creation steps.
 
-    .. versionchanged:: 3.7.2
-       Windows now uses redirector scripts for ``python[w].exe`` instead of
-       copying the actual binaries. In 3.7.2 only :meth:`setup_python` does
-       nothing unless running from a build in the source tree.
-
-    .. versionchanged:: 3.7.3
-       Windows copies the redirector scripts as part of :meth:`setup_python`
-       instead of :meth:`setup_scripts`. This was not the case in 3.7.2.
-       When using symlinks, the original executables will be linked.
-
-    In addition, :class:`EnvBuilder` provides this utility method that can be
-    called from :meth:`setup_scripts` or :meth:`post_setup` in subclasses to
-    assist in installing custom scripts into the virtual environment.
-
     .. method:: install_scripts(context, path)
 
+        This method can be
+        called from :meth:`setup_scripts` or :meth:`post_setup` in subclasses to
+        assist in installing custom scripts into the virtual environment.
+
         *path* is the path to a directory that should contain subdirectories
-        "common", "posix", "nt", each containing scripts destined for the bin
-        directory in the environment.  The contents of "common" and the
+        ``common``, ``posix``, ``nt``; each containing scripts destined for the
+        ``bin`` directory in the environment.  The contents of ``common`` and the
         directory corresponding to :data:`os.name` are copied after some text
         replacement of placeholders:
 
@@ -371,10 +478,20 @@ creation according to their needs, the :class:`EnvBuilder` class.
     .. method:: create_git_ignore_file(context)
 
        Creates a ``.gitignore`` file within the virtual environment that causes
-       the entire directory to be ignored by the ``git`` source control manager.
+       the entire directory to be ignored by the Git source control manager.
 
        .. versionadded:: 3.13
 
+    .. versionchanged:: 3.7.2
+       Windows now uses redirector scripts for ``python[w].exe`` instead of
+       copying the actual binaries. In 3.7.2 only :meth:`setup_python` does
+       nothing unless running from a build in the source tree.
+
+    .. versionchanged:: 3.7.3
+       Windows copies the redirector scripts as part of :meth:`setup_python`
+       instead of :meth:`setup_scripts`. This was not the case in 3.7.2.
+       When using symlinks, the original executables will be linked.
+
 There is also a module-level convenience function:
 
 .. function:: create(env_dir, system_site_packages=False, clear=False, \
@@ -387,16 +504,16 @@ There is also a module-level convenience function:
     .. versionadded:: 3.3
 
     .. versionchanged:: 3.4
-       Added the ``with_pip`` parameter
+       Added the *with_pip* parameter
 
     .. versionchanged:: 3.6
-       Added the ``prompt`` parameter
+       Added the *prompt* parameter
 
     .. versionchanged:: 3.9
-       Added the ``upgrade_deps`` parameter
+       Added the *upgrade_deps* parameter
 
     .. versionchanged:: 3.13
-       Added the ``scm_ignore_files`` parameter
+       Added the *scm_ignore_files* parameter
 
 An example of extending ``EnvBuilder``
 --------------------------------------
diff --git a/Doc/library/warnings.rst b/Doc/library/warnings.rst
index 500398636e11ae..40b96080a3c990 100644
--- a/Doc/library/warnings.rst
+++ b/Doc/library/warnings.rst
@@ -1,5 +1,5 @@
-:mod:`warnings` --- Warning control
-===================================
+:mod:`!warnings` --- Warning control
+====================================
 
 .. module:: warnings
    :synopsis: Issue warning messages and control their disposition.
@@ -178,6 +178,19 @@ If a warning is reported and doesn't match any registered filter then the
 "default" action is applied (hence its name).
 
 
+
+.. _repeated-warning-suppression-criteria:
+
+Repeated Warning Suppression Criteria
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The filters that suppress repeated warnings apply the following criteria to determine if a warning is considered a repeat:
+
+- ``"default"``: A warning is considered a repeat only if the (*message*, *category*, *module*, *lineno*) are all the same.
+- ``"module"``: A warning is considered a repeat if the (*message*, *category*, *module*) are the same, ignoring the line number.
+- ``"once"``: A warning is considered a repeat if the (*message*, *category*) are the same, ignoring the module and line number.
+
+
 .. _describing-warning-filters:
 
 Describing Warning Filters
@@ -396,7 +409,7 @@ Available Functions
 -------------------
 
 
-.. function:: warn(message, category=None, stacklevel=1, source=None, *, skip_file_prefixes=None)
+.. function:: warn(message, category=None, stacklevel=1, source=None, *, skip_file_prefixes=())
 
    Issue a warning, or maybe ignore it or raise an exception.  The *category*
    argument, if given, must be a :ref:`warning category class <warning-categories>`; it
@@ -595,6 +608,9 @@ Available Context Managers
     passed to :func:`simplefilter` as if it were called immediately on
     entering the context.
 
+    See :ref:`warning-filter` for the meaning of the *category* and *lineno*
+    parameters.
+
     .. note::
 
         The :class:`catch_warnings` manager works by replacing and
diff --git a/Doc/library/wave.rst b/Doc/library/wave.rst
index 55b029bc742b24..36c2bde87fb8fb 100644
--- a/Doc/library/wave.rst
+++ b/Doc/library/wave.rst
@@ -1,5 +1,5 @@
-:mod:`wave` --- Read and write WAV files
-========================================
+:mod:`!wave` --- Read and write WAV files
+=========================================
 
 .. module:: wave
    :synopsis: Provide an interface to the WAV sound format.
@@ -46,8 +46,8 @@ The :mod:`wave` module defines the following function and exception:
    the file object.
 
    The :func:`.open` function may be used in a :keyword:`with` statement.  When
-   the :keyword:`!with` block completes, the :meth:`Wave_read.close()` or
-   :meth:`Wave_write.close()` method is called.
+   the :keyword:`!with` block completes, the :meth:`Wave_read.close` or
+   :meth:`Wave_write.close` method is called.
 
    .. versionchanged:: 3.4
       Added support for unseekable files.
diff --git a/Doc/library/weakref.rst b/Doc/library/weakref.rst
index d6e062df945c64..2a25ed045c68bd 100644
--- a/Doc/library/weakref.rst
+++ b/Doc/library/weakref.rst
@@ -197,7 +197,7 @@ See :ref:`__slots__ documentation <slots>` for details.
       >>> del k1      # d = {k2: 2}
 
    .. versionchanged:: 3.9
-      Added support for ``|`` and ``|=`` operators, specified in :pep:`584`.
+      Added support for ``|`` and ``|=`` operators, as specified in :pep:`584`.
 
 :class:`WeakKeyDictionary` objects have an additional method that
 exposes the internal references directly.  The references are not guaranteed to
diff --git a/Doc/library/webbrowser.rst b/Doc/library/webbrowser.rst
index 3775d9f9245428..2d19c514ce43b6 100644
--- a/Doc/library/webbrowser.rst
+++ b/Doc/library/webbrowser.rst
@@ -1,5 +1,5 @@
-:mod:`webbrowser` --- Convenient web-browser controller
-=======================================================
+:mod:`!webbrowser` --- Convenient web-browser controller
+========================================================
 
 .. module:: webbrowser
    :synopsis: Easy-to-use controller for web browsers.
@@ -51,7 +51,7 @@ The options are, naturally, mutually exclusive.  Usage example::
 
    python -m webbrowser -t "https://www.python.org"
 
-.. include:: ../includes/wasm-notavail.rst
+.. availability:: not WASI, not Android.
 
 The following exception is defined:
 
@@ -72,6 +72,8 @@ The following functions are defined:
    (note that under many window managers this will occur regardless of the
    setting of this variable).
 
+   Returns ``True`` if a browser was successfully launched, ``False`` otherwise.
+
    Note that on some platforms, trying to open a filename using this function,
    may work and start the operating system's associated program.  However, this
    is neither supported nor portable.
@@ -84,11 +86,16 @@ The following functions are defined:
    Open *url* in a new window of the default browser, if possible, otherwise, open
    *url* in the only browser window.
 
+   Returns ``True`` if a browser was successfully launched, ``False`` otherwise.
+
+
 .. function:: open_new_tab(url)
 
    Open *url* in a new page ("tab") of the default browser, if possible, otherwise
    equivalent to :func:`open_new`.
 
+   Returns ``True`` if a browser was successfully launched, ``False`` otherwise.
+
 
 .. function:: get(using=None)
 
diff --git a/Doc/library/winreg.rst b/Doc/library/winreg.rst
index 06bd4d87eb03c6..b3a824fb69a49f 100644
--- a/Doc/library/winreg.rst
+++ b/Doc/library/winreg.rst
@@ -1,5 +1,5 @@
-:mod:`winreg` --- Windows registry access
-=========================================
+:mod:`!winreg` --- Windows registry access
+==========================================
 
 .. module:: winreg
    :platform: Windows
diff --git a/Doc/library/winsound.rst b/Doc/library/winsound.rst
index 370c5216652ba7..f7ca9dc57bbe28 100644
--- a/Doc/library/winsound.rst
+++ b/Doc/library/winsound.rst
@@ -1,5 +1,5 @@
-:mod:`winsound` --- Sound-playing interface for Windows
-=======================================================
+:mod:`!winsound` --- Sound-playing interface for Windows
+========================================================
 
 .. module:: winsound
    :platform: Windows
diff --git a/Doc/library/wsgiref.rst b/Doc/library/wsgiref.rst
index 7fe84a2de1fceb..8d4c5eb6600e8b 100644
--- a/Doc/library/wsgiref.rst
+++ b/Doc/library/wsgiref.rst
@@ -1,5 +1,5 @@
-:mod:`wsgiref` --- WSGI Utilities and Reference Implementation
-==============================================================
+:mod:`!wsgiref` --- WSGI Utilities and Reference Implementation
+===============================================================
 
 .. module:: wsgiref
    :synopsis: WSGI Utilities and Reference Implementation.
@@ -783,8 +783,8 @@ in :pep:`3333`.
 
 .. class:: StartResponse()
 
-   A :class:`typing.Protocol` describing `start_response()
-   <https://peps.python.org/pep-3333/#the-start-response-callable>`_
+   A :class:`typing.Protocol` describing :pep:`start_response()
+   <3333#the-start-response-callable>`
    callables (:pep:`3333`).
 
 .. data:: WSGIEnvironment
@@ -797,18 +797,18 @@ in :pep:`3333`.
 
 .. class:: InputStream()
 
-   A :class:`typing.Protocol` describing a `WSGI Input Stream
-   <https://peps.python.org/pep-3333/#input-and-error-streams>`_.
+   A :class:`typing.Protocol` describing a :pep:`WSGI Input Stream
+   <3333#input-and-error-streams>`.
 
 .. class:: ErrorStream()
 
-   A :class:`typing.Protocol` describing a `WSGI Error Stream
-   <https://peps.python.org/pep-3333/#input-and-error-streams>`_.
+   A :class:`typing.Protocol` describing a :pep:`WSGI Error Stream
+   <3333#input-and-error-streams>`.
 
 .. class:: FileWrapper()
 
-   A :class:`typing.Protocol` describing a `file wrapper
-   <https://peps.python.org/pep-3333/#optional-platform-specific-file-handling>`_.
+   A :class:`typing.Protocol` describing a :pep:`file wrapper
+   <3333#optional-platform-specific-file-handling>`.
    See :class:`wsgiref.util.FileWrapper` for a concrete implementation of this
    protocol.
 
diff --git a/Doc/library/xdrlib.rst b/Doc/library/xdrlib.rst
new file mode 100644
index 00000000000000..59b801c8e4072e
--- /dev/null
+++ b/Doc/library/xdrlib.rst
@@ -0,0 +1,15 @@
+:mod:`!xdrlib` --- Encode and decode XDR data
+=============================================
+
+.. module:: xdrlib
+   :synopsis: Removed in 3.13.
+   :deprecated:
+
+.. deprecated-removed:: 3.11 3.13
+
+This module is no longer part of the Python standard library.
+It was :ref:`removed in Python 3.13 <whatsnew313-pep594>` after
+being deprecated in Python 3.11.  The removal was decided in :pep:`594`.
+
+The last version of Python that provided the :mod:`!xdrlib` module was
+`Python 3.12 <https://docs.python.org/3.12/library/xdrlib.html>`_.
diff --git a/Doc/library/xml.dom.minidom.rst b/Doc/library/xml.dom.minidom.rst
index 72a7a98c2ac4f2..00a18751207e7a 100644
--- a/Doc/library/xml.dom.minidom.rst
+++ b/Doc/library/xml.dom.minidom.rst
@@ -1,5 +1,5 @@
-:mod:`xml.dom.minidom` --- Minimal DOM implementation
-=====================================================
+:mod:`!xml.dom.minidom` --- Minimal DOM implementation
+======================================================
 
 .. module:: xml.dom.minidom
    :synopsis: Minimal Document Object Model (DOM) implementation.
diff --git a/Doc/library/xml.dom.pulldom.rst b/Doc/library/xml.dom.pulldom.rst
index 843c2fd7fdb937..fd96765cbe3c96 100644
--- a/Doc/library/xml.dom.pulldom.rst
+++ b/Doc/library/xml.dom.pulldom.rst
@@ -1,5 +1,5 @@
-:mod:`xml.dom.pulldom` --- Support for building partial DOM trees
-=================================================================
+:mod:`!xml.dom.pulldom` --- Support for building partial DOM trees
+==================================================================
 
 .. module:: xml.dom.pulldom
    :synopsis: Support for building partial DOM trees from SAX events.
diff --git a/Doc/library/xml.dom.rst b/Doc/library/xml.dom.rst
index d0e1b248d595d1..f33b19bc2724d0 100644
--- a/Doc/library/xml.dom.rst
+++ b/Doc/library/xml.dom.rst
@@ -1,5 +1,5 @@
-:mod:`xml.dom` --- The Document Object Model API
-================================================
+:mod:`!xml.dom` --- The Document Object Model API
+=================================================
 
 .. module:: xml.dom
    :synopsis: Document Object Model API for Python.
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index 30a7b653f940e9..1daf6628013bf0 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -1,5 +1,5 @@
-:mod:`xml.etree.ElementTree` --- The ElementTree XML API
-========================================================
+:mod:`!xml.etree.ElementTree` --- The ElementTree XML API
+=========================================================
 
 .. module:: xml.etree.ElementTree
    :synopsis: Implementation of the ElementTree API.
@@ -508,7 +508,7 @@ Functions
    `C14N 2.0 <https://www.w3.org/TR/xml-c14n2/>`_ transformation function.
 
    Canonicalization is a way to normalise XML output in a way that allows
-   byte-by-byte comparisons and digital signatures.  It reduced the freedom
+   byte-by-byte comparisons and digital signatures.  It reduces the freedom
    that XML serializers have and instead generates a more constrained XML
    representation.  The main restrictions regard the placement of namespace
    declarations, the ordering of attributes, and ignorable whitespace.
@@ -874,6 +874,7 @@ Element Objects
 
 .. module:: xml.etree.ElementTree
    :noindex:
+   :no-index:
 
 .. class:: Element(tag, attrib={}, **extra)
 
@@ -970,7 +971,7 @@ Element Objects
 
    .. method:: extend(subelements)
 
-      Appends *subelements* from a sequence object with zero or more elements.
+      Appends *subelements* from an iterable of elements.
       Raises :exc:`TypeError` if a subelement is not an :class:`Element`.
 
       .. versionadded:: 3.2
@@ -1058,9 +1059,10 @@ Element Objects
    :meth:`~object.__getitem__`, :meth:`~object.__setitem__`,
    :meth:`~object.__len__`.
 
-   Caution: Elements with no subelements will test as ``False``.  Testing the
-   truth value of an Element is deprecated and will raise an exception in
-   Python 3.14.  Use specific ``len(elem)`` or ``elem is None`` test instead.::
+   Caution: Elements with no subelements will test as ``False``.  In a future
+   release of Python, all elements will test as ``True`` regardless of whether
+   subelements exist.  Instead, prefer explicit ``len(elem)`` or
+   ``elem is not None`` tests.::
 
      element = root.find('foo')
 
@@ -1373,7 +1375,7 @@ XMLParser Objects
 
    .. versionchanged:: 3.8
       Parameters are now :ref:`keyword-only <keyword-only_parameter>`.
-      The *html* argument no longer supported.
+      The *html* argument is no longer supported.
 
 
    .. method:: close()
diff --git a/Doc/library/xml.sax.handler.rst b/Doc/library/xml.sax.handler.rst
index e2f28e3244cb09..c2c9d6424b5072 100644
--- a/Doc/library/xml.sax.handler.rst
+++ b/Doc/library/xml.sax.handler.rst
@@ -1,5 +1,5 @@
-:mod:`xml.sax.handler` --- Base classes for SAX handlers
-========================================================
+:mod:`!xml.sax.handler` --- Base classes for SAX handlers
+=========================================================
 
 .. module:: xml.sax.handler
    :synopsis: Base classes for SAX event handlers.
diff --git a/Doc/library/xml.sax.reader.rst b/Doc/library/xml.sax.reader.rst
index 113e9e93fb04ff..b0bc84062e0719 100644
--- a/Doc/library/xml.sax.reader.rst
+++ b/Doc/library/xml.sax.reader.rst
@@ -1,5 +1,5 @@
-:mod:`xml.sax.xmlreader` --- Interface for XML parsers
-======================================================
+:mod:`!xml.sax.xmlreader` --- Interface for XML parsers
+=======================================================
 
 .. module:: xml.sax.xmlreader
    :synopsis: Interface which SAX-compliant XML parsers must implement.
diff --git a/Doc/library/xml.sax.rst b/Doc/library/xml.sax.rst
index 6d351dfb4d7072..c60e9e505f7544 100644
--- a/Doc/library/xml.sax.rst
+++ b/Doc/library/xml.sax.rst
@@ -1,5 +1,5 @@
-:mod:`xml.sax` --- Support for SAX2 parsers
-===========================================
+:mod:`!xml.sax` --- Support for SAX2 parsers
+============================================
 
 .. module:: xml.sax
    :synopsis: Package containing SAX2 base classes and convenience functions.
diff --git a/Doc/library/xml.sax.utils.rst b/Doc/library/xml.sax.utils.rst
index 3a524c9c0d5a9f..5ee11d58c3dd26 100644
--- a/Doc/library/xml.sax.utils.rst
+++ b/Doc/library/xml.sax.utils.rst
@@ -1,5 +1,5 @@
-:mod:`xml.sax.saxutils` --- SAX Utilities
-=========================================
+:mod:`!xml.sax.saxutils` --- SAX Utilities
+==========================================
 
 .. module:: xml.sax.saxutils
    :synopsis: Convenience functions and classes for use with SAX.
diff --git a/Doc/library/xmlrpc.client.rst b/Doc/library/xmlrpc.client.rst
index f7f23007fb0522..971e65605841e7 100644
--- a/Doc/library/xmlrpc.client.rst
+++ b/Doc/library/xmlrpc.client.rst
@@ -1,5 +1,5 @@
-:mod:`xmlrpc.client` --- XML-RPC client access
-==============================================
+:mod:`!xmlrpc.client` --- XML-RPC client access
+===============================================
 
 .. module:: xmlrpc.client
    :synopsis: XML-RPC client access.
@@ -64,11 +64,11 @@ between conformable Python objects and XML on the wire.
    The obsolete *use_datetime* flag is similar to *use_builtin_types* but it
    applies only to date/time values.
 
-.. versionchanged:: 3.3
-    The *use_builtin_types* flag was added.
+   .. versionchanged:: 3.3
+      The *use_builtin_types* flag was added.
 
-.. versionchanged:: 3.8
-    The *headers* parameter was added.
+   .. versionchanged:: 3.8
+      The *headers* parameter was added.
 
    Both the HTTP and HTTPS transports support the URL syntax extension for HTTP
    Basic Authentication: ``http://user:pass@host:port/path``.  The  ``user:pass``
@@ -165,7 +165,7 @@ between conformable Python objects and XML on the wire.
       A good description of XML-RPC operation and client software in several languages.
       Contains pretty much everything an XML-RPC client developer needs to know.
 
-   `XML-RPC Introspection <https://xmlrpc-c.sourceforge.net/introspection.html>`_
+   `XML-RPC Introspection <https://xmlrpc-c.sourceforge.io/introspection.html>`_
       Describes the XML-RPC protocol extension for introspection.
 
    `XML-RPC Specification <http://xmlrpc.scripting.com/spec.html>`_
diff --git a/Doc/library/xmlrpc.rst b/Doc/library/xmlrpc.rst
index 5f0a2cf68d01f9..a93d08f78cfba7 100644
--- a/Doc/library/xmlrpc.rst
+++ b/Doc/library/xmlrpc.rst
@@ -1,6 +1,9 @@
 :mod:`!xmlrpc` --- XMLRPC server and client modules
 ===================================================
 
+.. module:: xmlrpc
+   :synopsis: Server and client modules implementing XML-RPC.
+
 XML-RPC is a Remote Procedure Call method that uses XML passed via HTTP as a
 transport.  With it, a client can call methods with parameters on a remote
 server (the server is named by a URI) and get back structured data.
diff --git a/Doc/library/xmlrpc.server.rst b/Doc/library/xmlrpc.server.rst
index ca1ea455f0acfc..06169c7eca8b0c 100644
--- a/Doc/library/xmlrpc.server.rst
+++ b/Doc/library/xmlrpc.server.rst
@@ -1,5 +1,5 @@
-:mod:`xmlrpc.server` --- Basic XML-RPC servers
-==============================================
+:mod:`!xmlrpc.server` --- Basic XML-RPC servers
+===============================================
 
 .. module:: xmlrpc.server
    :synopsis: Basic XML-RPC server implementations.
diff --git a/Doc/library/zipapp.rst b/Doc/library/zipapp.rst
index c8a059bdb1cb93..cdaba07ab46c8f 100644
--- a/Doc/library/zipapp.rst
+++ b/Doc/library/zipapp.rst
@@ -1,5 +1,5 @@
-:mod:`zipapp` --- Manage executable Python zip archives
-=======================================================
+:mod:`!zipapp` --- Manage executable Python zip archives
+========================================================
 
 .. module:: zipapp
    :synopsis: Manage executable Python zip archives
@@ -332,7 +332,7 @@ Formally, the Python zip application format is therefore:
    interpreter name, and then a newline (``b'\n'``) character.  The interpreter
    name can be anything acceptable to the OS "shebang" processing, or the Python
    launcher on Windows.  The interpreter should be encoded in UTF-8 on Windows,
-   and in :func:`sys.getfilesystemencoding()` on POSIX.
+   and in :func:`sys.getfilesystemencoding` on POSIX.
 2. Standard zipfile data, as generated by the :mod:`zipfile` module.  The
    zipfile content *must* include a file called ``__main__.py`` (which must be
    in the "root" of the zipfile - i.e., it cannot be in a subdirectory).  The
diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
index 6192689c3a1194..5583c6b24be5c6 100644
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -1,5 +1,5 @@
-:mod:`zipfile` --- Work with ZIP archives
-=========================================
+:mod:`!zipfile` --- Work with ZIP archives
+==========================================
 
 .. module:: zipfile
    :synopsis: Read and write ZIP-format archive files.
@@ -585,6 +585,15 @@ Path objects are traversable using the ``/`` operator or ``joinpath``.
 
    Return ``True`` if the current context references a file.
 
+.. method:: Path.is_symlink()
+
+   Return ``True`` if the current context references a symbolic link.
+
+   .. versionadded:: 3.12
+
+   .. versionchanged:: 3.13
+      Previously, ``is_symlink`` would unconditionally return ``False``.
+
 .. method:: Path.exists()
 
    Return ``True`` if the current context references a file or
diff --git a/Doc/library/zipimport.rst b/Doc/library/zipimport.rst
index 7a8c837307e60a..9353a45bdcecba 100644
--- a/Doc/library/zipimport.rst
+++ b/Doc/library/zipimport.rst
@@ -1,5 +1,5 @@
-:mod:`zipimport` --- Import modules from Zip archives
-=====================================================
+:mod:`!zipimport` --- Import modules from Zip archives
+======================================================
 
 .. module:: zipimport
    :synopsis: Support for importing Python modules from ZIP archives.
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index ac179722dee2be..965b82a3daffb9 100644
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -1,5 +1,5 @@
-:mod:`zlib` --- Compression compatible with :program:`gzip`
-===========================================================
+:mod:`!zlib` --- Compression compatible with :program:`gzip`
+============================================================
 
 .. module:: zlib
    :synopsis: Low-level interface to compression and decompression routines
diff --git a/Doc/library/zoneinfo.rst b/Doc/library/zoneinfo.rst
index 54f1988375570c..a57f3b8b3e858c 100644
--- a/Doc/library/zoneinfo.rst
+++ b/Doc/library/zoneinfo.rst
@@ -1,5 +1,5 @@
-:mod:`zoneinfo` --- IANA time zone support
-==========================================
+:mod:`!zoneinfo` --- IANA time zone support
+===========================================
 
 .. module:: zoneinfo
     :synopsis: IANA time zone support
diff --git a/Doc/license.rst b/Doc/license.rst
index 814b6829f6b2bd..1721cca1ad4991 100644
--- a/Doc/license.rst
+++ b/Doc/license.rst
@@ -11,59 +11,63 @@ History of the software
 =======================
 
 Python was created in the early 1990s by Guido van Rossum at Stichting
-Mathematisch Centrum (CWI, see https://www.cwi.nl/) in the Netherlands as a
+Mathematisch Centrum (CWI, see https://www.cwi.nl) in the Netherlands as a
 successor of a language called ABC.  Guido remains Python's principal author,
 although it includes many contributions from others.
 
 In 1995, Guido continued his work on Python at the Corporation for National
-Research Initiatives (CNRI, see https://www.cnri.reston.va.us/) in Reston,
+Research Initiatives (CNRI, see https://www.cnri.reston.va.us) in Reston,
 Virginia where he released several versions of the software.
 
 In May 2000, Guido and the Python core development team moved to BeOpen.com to
 form the BeOpen PythonLabs team.  In October of the same year, the PythonLabs
-team moved to Digital Creations (now Zope Corporation; see
-https://www.zope.org/).  In 2001, the Python Software Foundation (PSF, see
+team moved to Digital Creations, which became
+Zope Corporation.  In 2001, the Python Software Foundation (PSF, see
 https://www.python.org/psf/) was formed, a non-profit organization created
-specifically to own Python-related Intellectual Property.  Zope Corporation is a
+specifically to own Python-related Intellectual Property.  Zope Corporation was a
 sponsoring member of the PSF.
 
-All Python releases are Open Source (see https://opensource.org/ for the Open
+All Python releases are Open Source (see https://opensource.org for the Open
 Source Definition). Historically, most, but not all, Python releases have also
 been GPL-compatible; the table below summarizes the various releases.
 
-+----------------+--------------+------------+------------+-----------------+
-| Release        | Derived from | Year       | Owner      | GPL compatible? |
-+================+==============+============+============+=================+
-| 0.9.0 thru 1.2 | n/a          | 1991-1995  | CWI        | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 1.3 thru 1.5.2 | 1.2          | 1995-1999  | CNRI       | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 1.6            | 1.5.2        | 2000       | CNRI       | no              |
-+----------------+--------------+------------+------------+-----------------+
-| 2.0            | 1.6          | 2000       | BeOpen.com | no              |
-+----------------+--------------+------------+------------+-----------------+
-| 1.6.1          | 1.6          | 2001       | CNRI       | no              |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1            | 2.0+1.6.1    | 2001       | PSF        | no              |
-+----------------+--------------+------------+------------+-----------------+
-| 2.0.1          | 2.0+1.6.1    | 2001       | PSF        | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.1          | 2.1+2.0.1    | 2001       | PSF        | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.2          | 2.1.1        | 2002       | PSF        | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.3          | 2.1.2        | 2002       | PSF        | yes             |
-+----------------+--------------+------------+------------+-----------------+
-| 2.2 and above  | 2.1.1        | 2001-now   | PSF        | yes             |
-+----------------+--------------+------------+------------+-----------------+
++----------------+--------------+------------+------------+---------------------+
+| Release        | Derived from | Year       | Owner      | GPL-compatible? (1) |
++================+==============+============+============+=====================+
+| 0.9.0 thru 1.2 | n/a          | 1991-1995  | CWI        | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 1.3 thru 1.5.2 | 1.2          | 1995-1999  | CNRI       | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 1.6            | 1.5.2        | 2000       | CNRI       | no                  |
++----------------+--------------+------------+------------+---------------------+
+| 2.0            | 1.6          | 2000       | BeOpen.com | no                  |
++----------------+--------------+------------+------------+---------------------+
+| 1.6.1          | 1.6          | 2001       | CNRI       | yes (2)             |
++----------------+--------------+------------+------------+---------------------+
+| 2.1            | 2.0+1.6.1    | 2001       | PSF        | no                  |
++----------------+--------------+------------+------------+---------------------+
+| 2.0.1          | 2.0+1.6.1    | 2001       | PSF        | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.1          | 2.1+2.0.1    | 2001       | PSF        | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.2          | 2.1.1        | 2002       | PSF        | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.3          | 2.1.2        | 2002       | PSF        | yes                 |
++----------------+--------------+------------+------------+---------------------+
+| 2.2 and above  | 2.1.1        | 2001-now   | PSF        | yes                 |
++----------------+--------------+------------+------------+---------------------+
 
 .. note::
 
-   GPL-compatible doesn't mean that we're distributing Python under the GPL.  All
-   Python licenses, unlike the GPL, let you distribute a modified version without
-   making your changes open source. The GPL-compatible licenses make it possible to
-   combine Python with other software that is released under the GPL; the others
-   don't.
+   (1) GPL-compatible doesn't mean that we're distributing Python under the GPL.
+       All Python licenses, unlike the GPL, let you distribute a modified version
+       without making your changes open source. The GPL-compatible licenses make
+       it possible to combine Python with other software that is released under
+       the GPL; the others don't.
+
+   (2) According to Richard Stallman, 1.6.1 is not GPL-compatible, because its license
+       has a choice of law clause. According to CNRI, however, Stallman's lawyer has
+       told CNRI's lawyer that 1.6.1 is "not incompatible" with the GPL.
 
 Thanks to the many outside volunteers who have worked under Guido's direction to
 make these releases possible.
@@ -73,10 +77,10 @@ Terms and conditions for accessing or otherwise using Python
 ============================================================
 
 Python software and documentation are licensed under the
-:ref:`PSF License Agreement <PSF-license>`.
+Python Software Foundation License Version 2.
 
 Starting with Python 3.8.6, examples, recipes, and other code in
-the documentation are dual licensed under the PSF License Agreement
+the documentation are dual licensed under the PSF License Version 2
 and the :ref:`Zero-Clause BSD license <BSD0>`.
 
 Some software incorporated into Python is under different licenses.
@@ -86,39 +90,38 @@ See :ref:`OtherLicenses` for an incomplete list of these licenses.
 
 .. _PSF-license:
 
-PSF LICENSE AGREEMENT FOR PYTHON |release|
-------------------------------------------
+PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+--------------------------------------------
 
 .. parsed-literal::
 
    1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and
-      the Individual or Organization ("Licensee") accessing and otherwise using Python
-      |release| software in source or binary form and its associated documentation.
+      the Individual or Organization ("Licensee") accessing and otherwise using this
+      software ("Python") in source or binary form and its associated documentation.
 
    2. Subject to the terms and conditions of this License Agreement, PSF hereby
       grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
       analyze, test, perform and/or display publicly, prepare derivative works,
-      distribute, and otherwise use Python |release| alone or in any derivative
+      distribute, and otherwise use Python alone or in any derivative
       version, provided, however, that PSF's License Agreement and PSF's notice of
       copyright, i.e., "Copyright © 2001-2024 Python Software Foundation; All Rights
-      Reserved" are retained in Python |release| alone or in any derivative version
+      Reserved" are retained in Python alone or in any derivative version
       prepared by Licensee.
 
    3. In the event Licensee prepares a derivative work that is based on or
-      incorporates Python |release| or any part thereof, and wants to make the
+      incorporates Python or any part thereof, and wants to make the
       derivative work available to others as provided herein, then Licensee hereby
-      agrees to include in any such work a brief summary of the changes made to Python
-      |release|.
+      agrees to include in any such work a brief summary of the changes made to Python.
 
-   4. PSF is making Python |release| available to Licensee on an "AS IS" basis.
+   4. PSF is making Python available to Licensee on an "AS IS" basis.
       PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.  BY WAY OF
       EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
       WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
-      USE OF PYTHON |release| WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
+      USE OF PYTHON WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
 
-   5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON |release|
+   5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
       FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
-      MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON |release|, OR ANY DERIVATIVE
+      MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, OR ANY DERIVATIVE
       THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
 
    6. This License Agreement will automatically terminate upon a material breach of
@@ -130,7 +133,7 @@ PSF LICENSE AGREEMENT FOR PYTHON |release|
       trademark sense to endorse or promote products or services of Licensee, or any
       third party.
 
-   8. By copying, installing or otherwise using Python |release|, Licensee agrees
+   8. By copying, installing or otherwise using Python, Licensee agrees
       to be bound by the terms and conditions of this License Agreement.
 
 
@@ -205,7 +208,7 @@ CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
       Agreement.  This Agreement together with Python 1.6.1 may be located on the
       internet using the following unique, persistent identifier (known as a handle):
       1895.22/1013.  This Agreement may also be obtained from a proxy server on the
-      internet using the following URL: http://hdl.handle.net/1895.22/1013."
+      internet using the following URL: http://hdl.handle.net/1895.22/1013".
 
    3. In the event Licensee prepares a derivative work that is based on or
       incorporates Python 1.6.1 or any part thereof, and wants to make the derivative
@@ -273,8 +276,8 @@ CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
 
 .. _BSD0:
 
-ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON |release| DOCUMENTATION
-----------------------------------------------------------------------
+ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON DOCUMENTATION
+------------------------------------------------------------
 
 .. parsed-literal::
 
@@ -1047,27 +1050,27 @@ https://www.w3.org/TR/xml-c14n2-testcases/ and is distributed under the
 mimalloc
 --------
 
-MIT License
+MIT License::
 
-Copyright (c) 2018-2021 Microsoft Corporation, Daan Leijen
+   Copyright (c) 2018-2021 Microsoft Corporation, Daan Leijen
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+   The above copyright notice and this permission notice shall be included in all
+   copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+   SOFTWARE.
 
 
 asyncio
diff --git a/Doc/make.bat b/Doc/make.bat
index 87d8359ef112bb..ede793ed3c6d70 100644
--- a/Doc/make.bat
+++ b/Doc/make.bat
@@ -144,12 +144,12 @@ if exist ..\Misc\NEWS (
 )
 
 if defined PAPER (
-    set SPHINXOPTS=-D latex_elements.papersize=%PAPER% %SPHINXOPTS%
+    set SPHINXOPTS=--define latex_elements.papersize=%PAPER% %SPHINXOPTS%
 )
 if "%1" EQU "htmlhelp" (
-    set SPHINXOPTS=-D html_theme_options.body_max_width=none %SPHINXOPTS%
+    set SPHINXOPTS=--define html_theme_options.body_max_width=none %SPHINXOPTS%
 )
-cmd /S /C "%SPHINXBUILD% %SPHINXOPTS% -b%1 -dbuild\doctrees . "%BUILDDIR%\%1" %2 %3 %4 %5 %6 %7 %8 %9"
+cmd /S /C "%SPHINXBUILD% %SPHINXOPTS% --builder %1 --doctree-dir build\doctrees . "%BUILDDIR%\%1" %2 %3 %4 %5 %6 %7 %8 %9"
 
 if "%1" EQU "htmlhelp" (
     "%HTMLHELP%" "%BUILDDIR%\htmlhelp\python%DISTVERSION:.=%.hhp"
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
index 42cca0664df71d..e351c962d99bd4 100644
--- a/Doc/reference/compound_stmts.rst
+++ b/Doc/reference/compound_stmts.rst
@@ -245,13 +245,12 @@ handler is started. This search inspects the :keyword:`!except` clauses in turn
 until one is found that matches the exception.
 An expression-less :keyword:`!except` clause, if present, must be last;
 it matches any exception.
-For an :keyword:`!except` clause with an expression,
-that expression is evaluated, and the clause matches the exception
-if the resulting object is "compatible" with the exception.  An object is
-compatible with an exception if the object is the class or a
-:term:`non-virtual base class <abstract base class>` of the exception object,
-or a tuple containing an item that is the class or a non-virtual base class
-of the exception object.
+
+For an :keyword:`!except` clause with an expression, the
+expression must evaluate to an exception type or a tuple of exception types.
+The raised exception matches an :keyword:`!except` clause whose expression evaluates
+to the class or a :term:`non-virtual base class <abstract base class>` of the exception object,
+or to a tuple that contains such a class.
 
 If no :keyword:`!except` clause matches the exception,
 the search for an exception handler
@@ -378,8 +377,10 @@ exception group with an empty message string. ::
    ...
    ExceptionGroup('', (BlockingIOError()))
 
-An :keyword:`!except*` clause must have a matching type,
-and this type cannot be a subclass of :exc:`BaseExceptionGroup`.
+An :keyword:`!except*` clause must have a matching expression; it cannot be ``except*:``.
+Furthermore, this expression cannot contain exception group types, because that would
+have ambiguous semantics.
+
 It is not possible to mix :keyword:`except` and :keyword:`!except*`
 in the same :keyword:`try`.
 :keyword:`break`, :keyword:`continue` and :keyword:`return`
@@ -840,7 +841,7 @@ A literal pattern corresponds to most
                   : | "None"
                   : | "True"
                   : | "False"
-                  : | `signed_number`: NUMBER | "-" NUMBER
+   signed_number: ["-"] NUMBER
 
 The rule ``strings`` and the token ``NUMBER`` are defined in the
 :doc:`standard Python grammar <./grammar>`.  Triple-quoted strings are
@@ -1216,9 +1217,12 @@ A function definition defines a user-defined function object (see section
                  :   | `parameter_list_no_posonly`
    parameter_list_no_posonly: `defparameter` ("," `defparameter`)* ["," [`parameter_list_starargs`]]
                             : | `parameter_list_starargs`
-   parameter_list_starargs: "*" [`parameter`] ("," `defparameter`)* ["," ["**" `parameter` [","]]]
-                          : | "**" `parameter` [","]
+   parameter_list_starargs: "*" [`star_parameter`] ("," `defparameter`)* ["," [`parameter_star_kwargs`]]
+                          : "*" ("," `defparameter`)+ ["," [`parameter_star_kwargs`]]
+                          : | `parameter_star_kwargs`
+   parameter_star_kwargs: "**" `parameter` [","]
    parameter: `identifier` [":" `expression`]
+   star_parameter: `identifier` [":" ["*"] `expression`]
    defparameter: `parameter` ["=" `expression`]
    funcname: `identifier`
 
@@ -1325,7 +1329,8 @@ and may only be passed by positional arguments.
 
 Parameters may have an :term:`annotation <function annotation>` of the form "``: expression``"
 following the parameter name.  Any parameter may have an annotation, even those of the form
-``*identifier`` or ``**identifier``.  Functions may have "return" annotation of
+``*identifier`` or ``**identifier``. (As a special case, parameters of the form
+``*identifier`` may have an annotation "``: *expression``".) Functions may have "return" annotation of
 the form "``-> expression``" after the parameter list.  These annotations can be
 any valid Python expression.  The presence of annotations does not change the
 semantics of a function.  The annotation values are available as values of
@@ -1336,6 +1341,10 @@ enables postponed evaluation.  Otherwise, they are evaluated when the function
 definition is executed.  In this case annotations may be evaluated in
 a different order than they appear in the source code.
 
+.. versionchanged:: 3.11
+   Parameters of the form "``*identifier``" may have an annotation
+   "``: *expression``". See :pep:`646`.
+
 .. index:: pair: lambda; expression
 
 It is also possible to create anonymous functions (functions not bound to a
@@ -1421,7 +1430,7 @@ dictionary.  The class name is bound to this class object in the original local
 namespace.
 
 The order in which attributes are defined in the class body is preserved
-in the new class's ``__dict__``.  Note that this is reliable only right
+in the new class's :attr:`~type.__dict__`.  Note that this is reliable only right
 after the class is created and only for classes that were defined using
 the definition syntax.
 
@@ -1452,8 +1461,8 @@ decorators.  The result is then bound to the class name.
 A list of :ref:`type parameters <type-params>` may be given in square brackets
 immediately after the class's name.
 This indicates to static type checkers that the class is generic. At runtime,
-the type parameters can be retrieved from the class's ``__type_params__``
-attribute. See :ref:`generic-classes` for more.
+the type parameters can be retrieved from the class's
+:attr:`~type.__type_params__` attribute. See :ref:`generic-classes` for more.
 
 .. versionchanged:: 3.12
    Type parameter lists are new in Python 3.12.
@@ -1666,8 +1675,8 @@ with more precision. The scope of type parameters is modeled with a special
 function (technically, an :ref:`annotation scope <annotation-scopes>`) that
 wraps the creation of the generic object.
 
-Generic functions, classes, and type aliases have a :attr:`!__type_params__`
-attribute listing their type parameters.
+Generic functions, classes, and type aliases have a
+:attr:`~definition.__type_params__` attribute listing their type parameters.
 
 Type parameters come in three kinds:
 
@@ -1891,5 +1900,5 @@ like ``TYPE_PARAMS_OF_ListOrSet`` are not actually bound at runtime.
    therefore the function's :term:`docstring`.
 
 .. [#] A string literal appearing as the first statement in the class body is
-   transformed into the namespace's ``__doc__`` item and therefore the class's
-   :term:`docstring`.
+   transformed into the namespace's :attr:`~type.__doc__` item and therefore
+   the class's :term:`docstring`.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index f5e87160732056..819126dab70e9b 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -106,12 +106,16 @@ that mutable object is changed.
 Types affect almost all aspects of object behavior.  Even the importance of
 object identity is affected in some sense: for immutable types, operations that
 compute new values may actually return a reference to any existing object with
-the same type and value, while for mutable objects this is not allowed.  E.g.,
-after ``a = 1; b = 1``, ``a`` and ``b`` may or may not refer to the same object
-with the value one, depending on the implementation, but after ``c = []; d =
-[]``, ``c`` and ``d`` are guaranteed to refer to two different, unique, newly
-created empty lists. (Note that ``c = d = []`` assigns the same object to both
-``c`` and ``d``.)
+the same type and value, while for mutable objects this is not allowed.
+For example, after ``a = 1; b = 1``, *a* and *b* may or may not refer to
+the same object with the value one, depending on the implementation.
+This is because :class:`int` is an immutable type, so the reference to ``1``
+can be reused. This behaviour depends on the implementation used, so should
+not be relied upon, but is something to be aware of when making use of object
+identity tests.
+However, after ``c = []; d = []``, *c* and *d* are guaranteed to refer to two
+different, unique, newly created empty lists. (Note that ``e = f = []`` assigns
+the *same* object to both *e* and *f*.)
 
 
 .. _types:
@@ -215,7 +219,7 @@ properties:
 
 * A sign is shown only when the number is negative.
 
-Python distinguishes between integers, floating point numbers, and complex
+Python distinguishes between integers, floating-point numbers, and complex
 numbers:
 
 
@@ -259,18 +263,18 @@ Booleans (:class:`bool`)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 .. index::
-   pair: object; floating point
-   pair: floating point; number
+   pair: object; floating-point
+   pair: floating-point; number
    pair: C; language
    pair: Java; language
 
-These represent machine-level double precision floating point numbers. You are
+These represent machine-level double precision floating-point numbers. You are
 at the mercy of the underlying machine architecture (and C or Java
 implementation) for the accepted range and handling of overflow. Python does not
-support single-precision floating point numbers; the savings in processor and
+support single-precision floating-point numbers; the savings in processor and
 memory usage that are usually the reason for using these are dwarfed by the
 overhead of using objects in Python, so there is no reason to complicate the
-language with two kinds of floating point numbers.
+language with two kinds of floating-point numbers.
 
 
 :class:`numbers.Complex` (:class:`complex`)
@@ -281,7 +285,7 @@ language with two kinds of floating point numbers.
    pair: complex; number
 
 These represent complex numbers as a pair of machine-level double precision
-floating point numbers.  The same caveats apply as for floating point numbers.
+floating-point numbers.  The same caveats apply as for floating-point numbers.
 The real and imaginary parts of a complex number ``z`` can be retrieved through
 the read-only attributes ``z.real`` and ``z.imag``.
 
@@ -373,7 +377,7 @@ Bytes
 
    A bytes object is an immutable array.  The items are 8-bit bytes,
    represented by integers in the range 0 <= x < 256.  Bytes literals
-   (like ``b'abc'``) and the built-in :func:`bytes()` constructor
+   (like ``b'abc'``) and the built-in :func:`bytes` constructor
    can be used to create bytes objects.  Also, bytes objects can be
    decoded to strings via the :meth:`~bytes.decode` method.
 
@@ -492,7 +496,7 @@ in the same order they were added sequentially over the dictionary.
 Replacing an existing key does not change the order, however removing a key
 and re-inserting it will add it to the end instead of keeping its old place.
 
-Dictionaries are mutable; they can be created by the ``{...}`` notation (see
+Dictionaries are mutable; they can be created by the ``{}`` notation (see
 section :ref:`dict`).
 
 .. index::
@@ -557,8 +561,9 @@ Special read-only attributes
        in which the function was defined.
 
    * - .. attribute:: function.__closure__
-     - ``None`` or a :class:`tuple` of cells that contain bindings for the
-       function's free variables.
+     - ``None`` or a :class:`tuple` of cells that contain bindings for the names specified
+       in the :attr:`~codeobject.co_freevars` attribute of the function's
+       :attr:`code object <function.__code__>`.
 
        A cell object has the attribute ``cell_contents``.
        This can be used to get the value of the cell, as well as set the value.
@@ -587,7 +592,6 @@ Most of these attributes check the type of the assigned value:
 
    * - .. attribute:: function.__doc__
      - The function's documentation string, or ``None`` if unavailable.
-       Not inherited by subclasses.
 
    * - .. attribute:: function.__name__
      - The function's name.
@@ -727,14 +731,7 @@ When an instance method object is derived from a :class:`classmethod` object, th
 itself, so that calling either ``x.f(1)`` or ``C.f(1)`` is equivalent to
 calling ``f(C,1)`` where ``f`` is the underlying function.
 
-Note that the transformation from :ref:`function object <user-defined-funcs>`
-to instance method
-object happens each time the attribute is retrieved from the instance.  In
-some cases, a fruitful optimization is to assign the attribute to a local
-variable and call that local variable. Also notice that this
-transformation only happens for user-defined functions; other callable
-objects (and all non-callable objects) are retrieved without
-transformation.  It is also important to note that user-defined functions
+It is important to note that user-defined functions
 which are attributes of a class instance are not converted to bound
 methods; this *only* happens when the function is an attribute of the
 class.
@@ -835,6 +832,7 @@ this case, the special read-only attribute :attr:`!__self__` is set to the objec
 denoted by *alist*. (The attribute has the same semantics as it does with
 :attr:`other instance methods <method.__self__>`.)
 
+.. _classes:
 
 Classes
 ^^^^^^^
@@ -853,6 +851,8 @@ Instances of arbitrary classes can be made callable by defining a
 :meth:`~object.__call__` method in their class.
 
 
+.. _module-objects:
+
 Modules
 -------
 
@@ -878,48 +878,236 @@ Attribute assignment updates the module's namespace dictionary, e.g.,
 
 .. index::
    single: __name__ (module attribute)
-   single: __doc__ (module attribute)
+   single: __spec__ (module attribute)
+   single: __package__ (module attribute)
+   single: __loader__ (module attribute)
+   single: __path__ (module attribute)
    single: __file__ (module attribute)
+   single: __cached__ (module attribute)
+   single: __doc__ (module attribute)
    single: __annotations__ (module attribute)
    pair: module; namespace
 
-Predefined (writable) attributes:
+.. _import-mod-attrs:
+
+Import-related attributes on module objects
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Module objects have the following attributes that relate to the
+:ref:`import system <importsystem>`. When a module is created using the machinery associated
+with the import system, these attributes are filled in based on the module's
+:term:`spec <module spec>`, before the :term:`loader` executes and loads the
+module.
+
+To create a module dynamically rather than using the import system,
+it's recommended to use :func:`importlib.util.module_from_spec`,
+which will set the various import-controlled attributes to appropriate values.
+It's also possible to use the :class:`types.ModuleType` constructor to create
+modules directly, but this technique is more error-prone, as most attributes
+must be manually set on the module object after it has been created when using
+this approach.
+
+.. caution::
+
+   With the exception of :attr:`~module.__name__`, it is **strongly**
+   recommended that you rely on :attr:`~module.__spec__` and its attributes
+   instead of any of the other individual attributes listed in this subsection.
+   Note that updating an attribute on :attr:`!__spec__` will not update the
+   corresponding attribute on the module itself:
+
+   .. doctest::
+
+     >>> import typing
+     >>> typing.__name__, typing.__spec__.name
+     ('typing', 'typing')
+     >>> typing.__spec__.name = 'spelling'
+     >>> typing.__name__, typing.__spec__.name
+     ('typing', 'spelling')
+     >>> typing.__name__ = 'keyboard_smashing'
+     >>> typing.__name__, typing.__spec__.name
+     ('keyboard_smashing', 'spelling')
 
-   :attr:`__name__`
-      The module's name.
+.. attribute:: module.__name__
 
-   :attr:`__doc__`
-      The module's documentation string, or ``None`` if
-      unavailable.
+   The name used to uniquely identify the module in the import system.
+   For a directly executed module, this will be set to ``"__main__"``.
 
-   :attr:`__file__`
-      The pathname of the file from which the
-      module was loaded, if it was loaded from a file.
-      The :attr:`__file__`
-      attribute may be missing for certain types of modules, such as C modules
-      that are statically linked into the interpreter.  For extension modules
-      loaded dynamically from a shared library, it's the pathname of the shared
-      library file.
+   This attribute must be set to the fully qualified name of the module.
+   It is expected to match the value of
+   :attr:`module.__spec__.name <importlib.machinery.ModuleSpec.name>`.
+
+.. attribute:: module.__spec__
+
+   A record of the module's import-system-related state.
+
+   Set to the :class:`module spec <importlib.machinery.ModuleSpec>` that was
+   used when importing the module. See :ref:`module-specs` for more details.
+
+   .. versionadded:: 3.4
+
+.. attribute:: module.__package__
+
+   The :term:`package` a module belongs to.
+
+   If the module is top-level (that is, not a part of any specific package)
+   then the attribute should be set to ``''`` (the empty string). Otherwise,
+   it should be set to the name of the module's package (which can be equal to
+   :attr:`module.__name__` if the module itself is a package). See :pep:`366`
+   for further details.
+
+   This attribute is used instead of :attr:`~module.__name__` to calculate
+   explicit relative imports for main modules. It defaults to ``None`` for
+   modules created dynamically using the :class:`types.ModuleType` constructor;
+   use :func:`importlib.util.module_from_spec` instead to ensure the attribute
+   is set to a :class:`str`.
+
+   It is **strongly** recommended that you use
+   :attr:`module.__spec__.parent <importlib.machinery.ModuleSpec.parent>`
+   instead of :attr:`!module.__package__`. :attr:`__package__` is now only used
+   as a fallback if :attr:`!__spec__.parent` is not set, and this fallback
+   path is deprecated.
+
+   .. versionchanged:: 3.4
+      This attribute now defaults to ``None`` for modules created dynamically
+      using the :class:`types.ModuleType` constructor.
+      Previously the attribute was optional.
 
-   :attr:`__annotations__`
-      A dictionary containing
-      :term:`variable annotations <variable annotation>` collected during
-      module body execution.  For best practices on working
-      with :attr:`__annotations__`, please see :ref:`annotations-howto`.
+   .. versionchanged:: 3.6
+      The value of :attr:`!__package__` is expected to be the same as
+      :attr:`__spec__.parent <importlib.machinery.ModuleSpec.parent>`.
+      :attr:`__package__` is now only used as a fallback during import
+      resolution if :attr:`!__spec__.parent` is not defined.
+
+   .. versionchanged:: 3.10
+      :exc:`ImportWarning` is raised if an import resolution falls back to
+      :attr:`!__package__` instead of
+      :attr:`__spec__.parent <importlib.machinery.ModuleSpec.parent>`.
+
+   .. versionchanged:: 3.12
+      Raise :exc:`DeprecationWarning` instead of :exc:`ImportWarning` when
+      falling back to :attr:`!__package__` during import resolution.
+
+   .. deprecated-removed:: 3.13 3.15
+      :attr:`!__package__` will cease to be set or taken into consideration
+      by the import system or standard library.
+
+.. attribute:: module.__loader__
+
+   The :term:`loader` object that the import machinery used to load the module.
+
+   This attribute is mostly useful for introspection, but can be used for
+   additional loader-specific functionality, for example getting data
+   associated with a loader.
+
+   :attr:`!__loader__` defaults to ``None`` for modules created dynamically
+   using the :class:`types.ModuleType` constructor;
+   use :func:`importlib.util.module_from_spec` instead to ensure the attribute
+   is set to a :term:`loader` object.
+
+   It is **strongly** recommended that you use
+   :attr:`module.__spec__.loader <importlib.machinery.ModuleSpec.loader>`
+   instead of :attr:`!module.__loader__`.
+
+   .. versionchanged:: 3.4
+      This attribute now defaults to ``None`` for modules created dynamically
+      using the :class:`types.ModuleType` constructor.
+      Previously the attribute was optional.
+
+   .. deprecated-removed:: 3.12 3.16
+      Setting :attr:`!__loader__` on a module while failing to set
+      :attr:`!__spec__.loader` is deprecated. In Python 3.16,
+      :attr:`!__loader__` will cease to be set or taken into consideration by
+      the import system or the standard library.
+
+.. attribute:: module.__path__
+
+   A (possibly empty) :term:`sequence` of strings enumerating the locations
+   where the package's submodules will be found. Non-package modules should
+   not have a :attr:`!__path__` attribute. See :ref:`package-path-rules` for
+   more details.
+
+   It is **strongly** recommended that you use
+   :attr:`module.__spec__.submodule_search_locations <importlib.machinery.ModuleSpec.submodule_search_locations>`
+   instead of :attr:`!module.__path__`.
+
+.. attribute:: module.__file__
+.. attribute:: module.__cached__
+
+   :attr:`!__file__` and :attr:`!__cached__` are both optional attributes that
+   may or may not be set. Both attributes should be a :class:`str` when they
+   are available.
+
+   :attr:`!__file__` indicates the pathname of the file from which the module
+   was loaded (if loaded from a file), or the pathname of the shared library
+   file for extension modules loaded dynamically from a shared library.
+   It might be missing for certain types of modules, such as C modules that are
+   statically linked into the interpreter, and the
+   :ref:`import system <importsystem>` may opt to leave it unset if it
+   has no semantic meaning (for example, a module loaded from a database).
+
+   If :attr:`!__file__` is set then the :attr:`!__cached__` attribute might
+   also be set,  which is the path to any compiled version of
+   the code (for example, a byte-compiled file). The file does not need to exist
+   to set this attribute; the path can simply point to where the
+   compiled file *would* exist (see :pep:`3147`).
+
+   Note that :attr:`!__cached__` may be set even if :attr:`!__file__` is not
+   set.  However, that scenario is quite atypical.  Ultimately, the
+   :term:`loader` is what makes use of the module spec provided by the
+   :term:`finder` (from which :attr:`!__file__` and :attr:`!__cached__` are
+   derived).  So if a loader can load from a cached module but otherwise does
+   not load from a file, that atypical scenario may be appropriate.
+
+   It is **strongly** recommended that you use
+   :attr:`module.__spec__.cached <importlib.machinery.ModuleSpec.cached>`
+   instead of :attr:`!module.__cached__`.
+
+   .. deprecated-removed:: 3.13 3.15
+      Setting :attr:`!__cached__` on a module while failing to set
+      :attr:`!__spec__.cached` is deprecated. In Python 3.15,
+      :attr:`!__cached__` will cease to be set or taken into consideration by
+      the import system or standard library.
+
+Other writable attributes on module objects
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+As well as the import-related attributes listed above, module objects also have
+the following writable attributes:
+
+.. attribute:: module.__doc__
+
+   The module's documentation string, or ``None`` if unavailable.
+   See also: :attr:`__doc__ attributes <definition.__doc__>`.
+
+.. attribute:: module.__annotations__
+
+   A dictionary containing
+   :term:`variable annotations <variable annotation>` collected during module
+   body execution.  For best practices on working with :attr:`__annotations__`,
+   please see :ref:`annotations-howto`.
+
+Module dictionaries
+^^^^^^^^^^^^^^^^^^^
+
+Module objects also have the following special read-only attribute:
 
 .. index:: single: __dict__ (module attribute)
+.. attribute:: module.__dict__
 
-Special read-only attribute: :attr:`~object.__dict__` is the module's
-namespace as a dictionary object.
+   The module's namespace as a dictionary object. Uniquely among the attributes
+   listed here, :attr:`!__dict__` cannot be accessed as a global variable from
+   within a module; it can only be accessed as an attribute on module objects.
 
-.. impl-detail::
+   .. impl-detail::
 
-   Because of the way CPython clears module dictionaries, the module
-   dictionary will be cleared when the module falls out of scope even if the
-   dictionary still has live references.  To avoid this, copy the dictionary
-   or keep the module around while using its dictionary directly.
+      Because of the way CPython clears module dictionaries, the module
+      dictionary will be cleared when the module falls out of scope even if the
+      dictionary still has live references.  To avoid this, copy the dictionary
+      or keep the module around while using its dictionary directly.
 
 
+.. _class-attrs-and-methods:
+
 Custom classes
 --------------
 
@@ -962,6 +1150,9 @@ of a base class.
 
 A class object can be called (see above) to yield a class instance (see below).
 
+Special attributes
+^^^^^^^^^^^^^^^^^^
+
 .. index::
    single: __name__ (class attribute)
    single: __module__ (class attribute)
@@ -973,42 +1164,100 @@ A class object can be called (see above) to yield a class instance (see below).
    single: __static_attributes__ (class attribute)
    single: __firstlineno__ (class attribute)
 
-Special attributes:
+.. list-table::
+   :header-rows: 1
 
-   :attr:`~definition.__name__`
-      The class name.
+   * - Attribute
+     - Meaning
 
-   :attr:`__module__`
-      The name of the module in which the class was defined.
+   * - .. attribute:: type.__name__
+     - The class's name.
+       See also: :attr:`__name__ attributes <definition.__name__>`.
 
-   :attr:`~object.__dict__`
-      The dictionary containing the class's namespace.
+   * - .. attribute:: type.__qualname__
+     - The class's :term:`qualified name`.
+       See also: :attr:`__qualname__ attributes <definition.__qualname__>`.
+
+   * - .. attribute:: type.__module__
+     - The name of the module in which the class was defined.
+
+   * - .. attribute:: type.__dict__
+     - A :class:`mapping proxy <types.MappingProxyType>`
+       providing a read-only view of the class's namespace.
+       See also: :attr:`__dict__ attributes <object.__dict__>`.
+
+   * - .. attribute:: type.__bases__
+     - A :class:`tuple` containing the class's bases.
+       In most cases, for a class defined as ``class X(A, B, C)``,
+       ``X.__bases__`` will be exactly equal to ``(A, B, C)``.
+
+   * - .. attribute:: type.__doc__
+     - The class's documentation string, or ``None`` if undefined.
+       Not inherited by subclasses.
+
+   * - .. attribute:: type.__annotations__
+     - A dictionary containing
+       :term:`variable annotations <variable annotation>`
+       collected during class body execution. For best practices on working
+       with :attr:`!__annotations__`, please see :ref:`annotations-howto`.
+
+       .. caution::
+
+          Accessing the :attr:`!__annotations__` attribute of a class
+          object directly may yield incorrect results in the presence of
+          metaclasses. In addition, the attribute may not exist for
+          some classes. Use :func:`inspect.get_annotations` to
+          retrieve class annotations safely.
+
+   * - .. attribute:: type.__type_params__
+     - A :class:`tuple` containing the :ref:`type parameters <type-params>` of
+       a :ref:`generic class <generic-classes>`.
 
-   :attr:`~class.__bases__`
-      A tuple containing the base classes, in the order of
-      their occurrence in the base class list.
+       .. versionadded:: 3.12
+
+   * - .. attribute:: type.__static_attributes__
+     - A :class:`tuple` containing names of attributes of this class which are
+       assigned through ``self.X`` from any function in its body.
+
+       .. versionadded:: 3.13
+
+   * - .. attribute:: type.__firstlineno__
+     - The line number of the first line of the class definition,
+       including decorators.
+       Setting the :attr:`__module__` attribute removes the
+       :attr:`!__firstlineno__` item from the type's dictionary.
+
+       .. versionadded:: 3.13
+
+   * - .. attribute:: type.__mro__
+     - The :class:`tuple` of classes that are considered when looking for
+       base classes during method resolution.
 
-   :attr:`__doc__`
-      The class's documentation string, or ``None`` if undefined.
 
-   :attr:`__annotations__`
-      A dictionary containing
-      :term:`variable annotations <variable annotation>`
-      collected during class body execution.  For best practices on
-      working with :attr:`__annotations__`, please see
-      :ref:`annotations-howto`.
+Special methods
+^^^^^^^^^^^^^^^
+
+In addition to the special attributes described above, all Python classes also
+have the following two methods available:
+
+.. method:: type.mro
 
-   :attr:`__type_params__`
-      A tuple containing the :ref:`type parameters <type-params>` of
-      a :ref:`generic class <generic-classes>`.
+   This method can be overridden by a metaclass to customize the method
+   resolution order for its instances.  It is called at class instantiation,
+   and its result is stored in :attr:`~type.__mro__`.
 
-   :attr:`~class.__static_attributes__`
-      A tuple containing names of attributes of this class which are accessed
-      through ``self.X`` from any function in its body.
+.. method:: type.__subclasses__
 
-   :attr:`__firstlineno__`
-      The line number of the first line of the class definition, including decorators.
+   Each class keeps a list of weak references to its immediate subclasses. This
+   method returns a list of all those references still alive. The list is in
+   definition order. Example:
 
+   .. doctest::
+
+      >>> class A: pass
+      >>> class B(A): pass
+      >>> A.__subclasses__()
+      [<class 'B'>]
 
 Class instances
 ---------------
@@ -1048,12 +1297,22 @@ dictionary directly.
 Class instances can pretend to be numbers, sequences, or mappings if they have
 methods with certain special names.  See section :ref:`specialnames`.
 
+Special attributes
+^^^^^^^^^^^^^^^^^^
+
 .. index::
    single: __dict__ (instance attribute)
    single: __class__ (instance attribute)
 
-Special attributes: :attr:`~object.__dict__` is the attribute dictionary;
-:attr:`~instance.__class__` is the instance's class.
+.. attribute:: object.__class__
+
+   The class to which a class instance belongs.
+
+.. attribute:: object.__dict__
+
+   A dictionary or other mapping object used to store an object's (writable)
+   attributes. Not all instances have a :attr:`!__dict__` attribute; see the
+   section on :ref:`slots` for more details.
 
 
 I/O objects (also known as file objects)
@@ -1168,10 +1427,14 @@ Special read-only attributes
 
    * - .. attribute:: codeobject.co_cellvars
      - A :class:`tuple` containing the names of :ref:`local variables <naming>`
-       that are referenced by nested functions inside the function
+       that are referenced from at least one :term:`nested scope` inside the function
 
    * - .. attribute:: codeobject.co_freevars
-     - A :class:`tuple` containing the names of free variables in the function
+     - A :class:`tuple` containing the names of
+       :term:`free (closure) variables <closure variable>` that a :term:`nested scope`
+       references in an outer scope. See also :attr:`function.__closure__`.
+
+       Note: references to global and builtin names are *not* included.
 
    * - .. attribute:: codeobject.co_code
      - A string representing the sequence of :term:`bytecode` instructions in
@@ -1197,7 +1460,7 @@ Special read-only attributes
 
        .. deprecated:: 3.12
           This attribute of code objects is deprecated, and may be removed in
-          Python 3.14.
+          Python 3.15.
 
    * - .. attribute:: codeobject.co_stacksize
      - The required stack size of the code object
@@ -1240,7 +1503,7 @@ Methods on code objects
 
    The iterator returns :class:`tuple`\s containing the ``(start_line, end_line,
    start_column, end_column)``. The *i-th* tuple corresponds to the
-   position of the source code that compiled to the *i-th* instruction.
+   position of the source code that compiled to the *i-th* code unit.
    Column information is 0-indexed utf-8 byte offsets on the given source
    line.
 
@@ -1344,13 +1607,13 @@ Special read-only attributes
        ``object.__getattr__`` with arguments ``obj`` and ``"f_code"``.
 
    * - .. attribute:: frame.f_locals
-     - The dictionary used by the frame to look up
+     - The mapping used by the frame to look up
        :ref:`local variables <naming>`.
-       If the frame refers to a function or comprehension,
+       If the frame refers to an :term:`optimized scope`,
        this may return a write-through proxy object.
 
        .. versionchanged:: 3.13
-          Return a proxy for functions and comprehensions.
+          Return a proxy for optimized scopes.
 
    * - .. attribute:: frame.f_globals
      - The dictionary used by the frame to look up
@@ -1664,6 +1927,8 @@ Basic customization
 
    It is not guaranteed that :meth:`__del__` methods are called for objects
    that still exist when the interpreter exits.
+   :class:`weakref.finalize` provides a straightforward way to register
+   a cleanup function to be called when an object is garbage collected.
 
    .. note::
 
@@ -1721,7 +1986,8 @@ Basic customization
    "informal" string representation of instances of that class is required.
 
    This is typically used for debugging, so it is important that the representation
-   is information-rich and unambiguous.
+   is information-rich and unambiguous. A default implementation is provided by the
+   :class:`object` class itself.
 
    .. index::
       single: string; __str__() (object method)
@@ -1731,10 +1997,10 @@ Basic customization
 
 .. method:: object.__str__(self)
 
-   Called by :func:`str(object) <str>` and the built-in functions
-   :func:`format` and :func:`print` to compute the "informal" or nicely
+   Called by :func:`str(object) <str>`, the default :meth:`__format__` implementation,
+   and the built-in function :func:`print`, to compute the "informal" or nicely
    printable string representation of an object.  The return value must be a
-   :ref:`string <textseq>` object.
+   :ref:`str <textseq>` object.
 
    This method differs from :meth:`object.__repr__` in that there is no
    expectation that :meth:`__str__` return a valid Python expression: a more
@@ -1751,7 +2017,8 @@ Basic customization
    .. index:: pair: built-in function; bytes
 
    Called by :ref:`bytes <func-bytes>` to compute a byte-string representation
-   of an object. This should return a :class:`bytes` object.
+   of an object. This should return a :class:`bytes` object. The :class:`object`
+   class itself does not provide this method.
 
    .. index::
       single: string; __format__() (object method)
@@ -1775,6 +2042,9 @@ Basic customization
 
    The return value must be a string object.
 
+   The default implementation by the :class:`object` class should be given
+   an empty *format_spec* string. It delegates to :meth:`__str__`.
+
    .. versionchanged:: 3.4
       The __format__ method of ``object`` itself raises a :exc:`TypeError`
       if passed any non-empty string.
@@ -1817,6 +2087,12 @@ Basic customization
    ``(x<y or x==y)`` does not imply ``x<=y``. To automatically generate ordering
    operations from a single root operation, see :func:`functools.total_ordering`.
 
+   By default, the :class:`object` class provides implementations consistent
+   with :ref:`expressions-value-comparisons`: equality compares according to
+   object identity, and order comparisons raise :exc:`TypeError`. Each default
+   method may generate these results directly, but may also return
+   :data:`NotImplemented`.
+
    See the paragraph on :meth:`__hash__` for
    some important notes on creating :term:`hashable` objects which support
    custom comparison operations and are usable as dictionary keys.
@@ -1872,9 +2148,9 @@ Basic customization
    bucket).
 
    User-defined classes have :meth:`__eq__` and :meth:`__hash__` methods
-   by default; with them, all objects compare unequal (except with themselves)
-   and ``x.__hash__()`` returns an appropriate value such that ``x == y``
-   implies both that ``x is y`` and ``hash(x) == hash(y)``.
+   by default (inherited from the :class:`object` class); with them, all objects compare
+   unequal (except with themselves) and ``x.__hash__()`` returns an appropriate
+   value such that ``x == y`` implies both that ``x is y`` and ``hash(x) == hash(y)``.
 
    A class that overrides :meth:`__eq__` and does not define :meth:`__hash__`
    will have its :meth:`__hash__` implicitly set to ``None``.  When the
@@ -1924,8 +2200,8 @@ Basic customization
    ``bool()``; should return ``False`` or ``True``.  When this method is not
    defined, :meth:`~object.__len__` is called, if it is defined, and the object is
    considered true if its result is nonzero.  If a class defines neither
-   :meth:`!__len__` nor :meth:`!__bool__`, all its instances are considered
-   true.
+   :meth:`!__len__` nor :meth:`!__bool__` (which is true of the :class:`object`
+   class itself), all its instances are considered true.
 
 
 .. _attribute-access:
@@ -1947,6 +2223,7 @@ access (use of, assignment to, or deletion of ``x.name``) for class instances.
    for ``self``; or :meth:`__get__` of a *name* property raises
    :exc:`AttributeError`).  This method should either return the (computed)
    attribute value or raise an :exc:`AttributeError` exception.
+   The :class:`object` class itself does not provide this method.
 
    Note that if the attribute is found through the normal mechanism,
    :meth:`__getattr__` is not called.  (This is an intentional asymmetry between
@@ -2085,8 +2362,8 @@ method (a so-called *descriptor* class) appears in an *owner* class (the
 descriptor must be in either the owner's class dictionary or in the class
 dictionary for one of its parents).  In the examples below, "the attribute"
 refers to the attribute whose name is the key of the property in the owner
-class' :attr:`~object.__dict__`.
-
+class' :attr:`~object.__dict__`.  The :class:`object` class itself does not
+implement any of these protocols.
 
 .. method:: object.__get__(self, instance, owner=None)
 
@@ -2281,9 +2558,9 @@ Notes on using *__slots__*:
 
 * The action of a *__slots__* declaration is not limited to the class
   where it is defined.  *__slots__* declared in parents are available in
-  child classes. However, child subclasses will get a :attr:`~object.__dict__` and
-  *__weakref__* unless they also define *__slots__* (which should only
-  contain names of any *additional* slots).
+  child classes. However, instances of a child subclass will get a
+  :attr:`~object.__dict__` and *__weakref__* unless the subclass also defines
+  *__slots__* (which should only contain names of any *additional* slots).
 
 * If a class defines a slot also defined in a base class, the instance variable
   defined by the base class slot is inaccessible (except by retrieving its
@@ -2302,7 +2579,7 @@ Notes on using *__slots__*:
   to provide per-attribute docstrings that will be recognised by
   :func:`inspect.getdoc` and displayed in the output of :func:`help`.
 
-* :attr:`~instance.__class__` assignment works only if both classes have the
+* :attr:`~object.__class__` assignment works only if both classes have the
   same *__slots__*.
 
 * :ref:`Multiple inheritance <tut-multiple>` with multiple slotted parent
@@ -2568,7 +2845,7 @@ in the local namespace as the defined class.
 When a new class is created by ``type.__new__``, the object provided as the
 namespace parameter is copied to a new ordered mapping and the original
 object is discarded. The new copy is wrapped in a read-only proxy, which
-becomes the :attr:`~object.__dict__` attribute of the class object.
+becomes the :attr:`~type.__dict__` attribute of the class object.
 
 .. seealso::
 
@@ -2596,14 +2873,14 @@ order to allow the addition of Abstract Base Classes (ABCs) as "virtual base
 classes" to any class or type (including built-in types), including other
 ABCs.
 
-.. method:: class.__instancecheck__(self, instance)
+.. method:: type.__instancecheck__(self, instance)
 
    Return true if *instance* should be considered a (direct or indirect)
    instance of *class*. If defined, called to implement ``isinstance(instance,
    class)``.
 
 
-.. method:: class.__subclasscheck__(self, subclass)
+.. method:: type.__subclasscheck__(self, subclass)
 
    Return true if *subclass* should be considered a (direct or indirect)
    subclass of *class*.  If defined, called to implement ``issubclass(subclass,
@@ -2619,8 +2896,8 @@ case the instance is itself a class.
 
    :pep:`3119` - Introducing Abstract Base Classes
       Includes the specification for customizing :func:`isinstance` and
-      :func:`issubclass` behavior through :meth:`~class.__instancecheck__` and
-      :meth:`~class.__subclasscheck__`, with motivation for this functionality
+      :func:`issubclass` behavior through :meth:`~type.__instancecheck__` and
+      :meth:`~type.__subclasscheck__`, with motivation for this functionality
       in the context of adding Abstract Base Classes (see the :mod:`abc`
       module) to the language.
 
@@ -2778,6 +3055,7 @@ Emulating callable objects
 
    Called when the instance is "called" as a function; if this method is defined,
    ``x(arg1, arg2, ...)`` roughly translates to ``type(x).__call__(x, arg1, ...)``.
+   The :class:`object` class itself does not provide this method.
 
 
 .. _sequence-types:
@@ -2785,10 +3063,11 @@ Emulating callable objects
 Emulating container types
 -------------------------
 
-The following methods can be defined to implement container objects.  Containers
-usually are :term:`sequences <sequence>` (such as :class:`lists <list>` or
+The following methods can be defined to implement container objects. None of them
+are provided by the :class:`object` class itself. Containers usually are
+:term:`sequences <sequence>` (such as :class:`lists <list>` or
 :class:`tuples <tuple>`) or :term:`mappings <mapping>` (like
-:class:`dictionaries <dict>`),
+:term:`dictionaries <dictionary>`),
 but can represent other containers as well.  The first set of methods is used
 either to emulate a sequence or to emulate a mapping; the difference is that for
 a sequence, the allowable keys should be the integers *k* for which ``0 <= k <
@@ -3151,6 +3430,7 @@ Typical uses of context managers include saving and restoring various kinds of
 global state, locking and unlocking resources, closing opened files, etc.
 
 For more information on context managers, see :ref:`typecontextmanager`.
+The :class:`object` class itself does not provide the context manager methods.
 
 
 .. method:: object.__enter__(self)
@@ -3355,6 +3635,8 @@ are awaitable.
    Must return an :term:`iterator`.  Should be used to implement
    :term:`awaitable` objects.  For instance, :class:`asyncio.Future` implements
    this method to be compatible with the :keyword:`await` expression.
+   The :class:`object` class itself is not awaitable and does not provide
+   this method.
 
    .. note::
 
@@ -3440,6 +3722,9 @@ its ``__anext__`` method.
 
 Asynchronous iterators can be used in an :keyword:`async for` statement.
 
+The :class:`object` class itself does not provide these methods.
+
+
 .. method:: object.__aiter__(self)
 
    Must return an *asynchronous iterator* object.
@@ -3486,6 +3771,8 @@ suspend execution in its ``__aenter__`` and ``__aexit__`` methods.
 
 Asynchronous context managers can be used in an :keyword:`async with` statement.
 
+The :class:`object` class itself does not provide these methods.
+
 .. method:: object.__aenter__(self)
 
    Semantically similar to :meth:`~object.__enter__`, the only
diff --git a/Doc/reference/executionmodel.rst b/Doc/reference/executionmodel.rst
index f24e1537af39ed..1cf543a4432a6e 100644
--- a/Doc/reference/executionmodel.rst
+++ b/Doc/reference/executionmodel.rst
@@ -90,7 +90,7 @@ If a name is bound in a block, it is a local variable of that block, unless
 declared as :keyword:`nonlocal` or :keyword:`global`.  If a name is bound at
 the module level, it is a global variable.  (The variables of the module code
 block are local and global.)  If a variable is used in a code block but not
-defined there, it is a :dfn:`free variable`.
+defined there, it is a :term:`free variable`.
 
 Each occurrence of a name in the program text refers to the :dfn:`binding` of
 that name established by the following name resolution rules.
@@ -225,8 +225,8 @@ Annotation scopes differ from function scopes in the following ways:
   statements in inner scopes. This includes only type parameters, as no other
   syntactic elements that can appear within annotation scopes can introduce new names.
 * While annotation scopes have an internal name, that name is not reflected in the
-  :term:`__qualname__ <qualified name>` of objects defined within the scope.
-  Instead, the :attr:`!__qualname__`
+  :term:`qualified name` of objects defined within the scope.
+  Instead, the :attr:`~definition.__qualname__`
   of such objects is as if the object were defined in the enclosing scope.
 
 .. versionadded:: 3.12
@@ -330,6 +330,9 @@ enclosing namespace, but in the global namespace.  [#]_ The :func:`exec` and
 :func:`eval` functions have optional arguments to override the global and local
 namespace.  If only one namespace is specified, it is used for both.
 
+.. XXX(ncoghlan) above is only accurate for string execution. When executing code objects,
+   closure cells may now be passed explicitly to resolve co_freevars references.
+   Docs issue: https://github.com/python/cpython/issues/122826
 
 .. _exceptions:
 
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index 00b57effd3e1c0..3eaceae41f7eaf 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -33,7 +33,7 @@ implementation for built-in types works as follows:
 
 * If either argument is a complex number, the other is converted to complex;
 
-* otherwise, if either argument is a floating point number, the other is
+* otherwise, if either argument is a floating-point number, the other is
   converted to floating point;
 
 * otherwise, both must be integers and no conversion is necessary.
@@ -83,18 +83,47 @@ exception.
    pair: name; mangling
    pair: private; names
 
-**Private name mangling:** When an identifier that textually occurs in a class
-definition begins with two or more underscore characters and does not end in two
-or more underscores, it is considered a :dfn:`private name` of that class.
-Private names are transformed to a longer form before code is generated for
-them.  The transformation inserts the class name, with leading underscores
-removed and a single underscore inserted, in front of the name.  For example,
-the identifier ``__spam`` occurring in a class named ``Ham`` will be transformed
-to ``_Ham__spam``.  This transformation is independent of the syntactical
-context in which the identifier is used.  If the transformed name is extremely
-long (longer than 255 characters), implementation defined truncation may happen.
-If the class name consists only of underscores, no transformation is done.
+Private name mangling
+^^^^^^^^^^^^^^^^^^^^^
 
+When an identifier that textually occurs in a class definition begins with two
+or more underscore characters and does not end in two or more underscores, it
+is considered a :dfn:`private name` of that class.
+
+.. seealso::
+
+   The :ref:`class specifications <class>`.
+
+More precisely, private names are transformed to a longer form before code is
+generated for them.  If the transformed name is longer than 255 characters,
+implementation-defined truncation may happen.
+
+The transformation is independent of the syntactical context in which the
+identifier is used but only the following private identifiers are mangled:
+
+- Any name used as the name of a variable that is assigned or read or any
+  name of an attribute being accessed.
+
+  The :attr:`~definition.__name__` attribute of nested functions, classes, and
+  type aliases is however not mangled.
+
+- The name of imported modules, e.g., ``__spam`` in ``import __spam``.
+  If the module is part of a package (i.e., its name contains a dot),
+  the name is *not* mangled, e.g., the ``__foo`` in ``import __foo.bar``
+  is not mangled.
+
+- The name of an imported member, e.g., ``__f`` in ``from spam import __f``.
+
+The transformation rule is defined as follows:
+
+- The class name, with leading underscores removed and a single leading
+  underscore inserted, is inserted in front of the identifier, e.g., the
+  identifier ``__spam`` occurring in a class named ``Foo``, ``_Foo`` or
+  ``__Foo`` is transformed to ``_Foo__spam``.
+
+- If the class name consists only of underscores, the transformation is the
+  identity, e.g., the identifier ``__spam`` occurring in a class named ``_``
+  or ``__`` is left as is.
 
 .. _atom-literals:
 
@@ -110,8 +139,8 @@ Python supports string and bytes literals and various numeric literals:
           : | `integer` | `floatnumber` | `imagnumber`
 
 Evaluation of a literal yields an object of the given type (string, bytes,
-integer, floating point number, complex number) with the given value.  The value
-may be approximated in the case of floating point and imaginary (complex)
+integer, floating-point number, complex number) with the given value.  The value
+may be approximated in the case of floating-point and imaginary (complex)
 literals.  See section :ref:`literals` for details.
 
 .. index::
@@ -218,10 +247,12 @@ A comprehension in an :keyword:`!async def` function may consist of either a
 :keyword:`!for` or :keyword:`!async for` clause following the leading
 expression, may contain additional :keyword:`!for` or :keyword:`!async for`
 clauses, and may also use :keyword:`await` expressions.
-If a comprehension contains either :keyword:`!async for` clauses or
-:keyword:`!await` expressions or other asynchronous comprehensions it is called
-an :dfn:`asynchronous comprehension`.  An asynchronous comprehension may
-suspend the execution of the coroutine function in which it appears.
+
+If a comprehension contains :keyword:`!async for` clauses, or if it contains
+:keyword:`!await` expressions or other asynchronous comprehensions anywhere except
+the iterable expression in the leftmost :keyword:`!for` clause, it is called an
+:dfn:`asynchronous comprehension`. An asynchronous comprehension may suspend the
+execution of the coroutine function in which it appears.
 See also :pep:`530`.
 
 .. versionadded:: 3.6
@@ -253,7 +284,7 @@ A list display is a possibly empty series of expressions enclosed in square
 brackets:
 
 .. productionlist:: python-grammar
-   list_display: "[" [`starred_list` | `comprehension`] "]"
+   list_display: "[" [`flexible_expression_list` | `comprehension`] "]"
 
 A list display yields a new list object, the contents being specified by either
 a list of expressions or a comprehension.  When a comma-separated list of
@@ -278,7 +309,7 @@ A set display is denoted by curly braces and distinguishable from dictionary
 displays by the lack of colons separating keys and values:
 
 .. productionlist:: python-grammar
-   set_display: "{" (`starred_list` | `comprehension`) "}"
+   set_display: "{" (`flexible_expression_list` | `comprehension`) "}"
 
 A set display yields a new mutable set object, the contents being specified by
 either a sequence of expressions or a comprehension.  When a comma-separated
@@ -423,7 +454,7 @@ Yield expressions
 .. productionlist:: python-grammar
    yield_atom: "(" `yield_expression` ")"
    yield_from: "yield" "from" `expression`
-   yield_expression: "yield" `expression_list` | `yield_from`
+   yield_expression: "yield" `yield_list` | `yield_from`
 
 The yield expression is used when defining a :term:`generator` function
 or an :term:`asynchronous generator` function and
@@ -454,9 +485,9 @@ When a generator function is called, it returns an iterator known as a
 generator.  That generator then controls the execution of the generator
 function.  The execution starts when one of the generator's methods is called.
 At that time, the execution proceeds to the first yield expression, where it is
-suspended again, returning the value of :token:`~python-grammar:expression_list`
+suspended again, returning the value of :token:`~python-grammar:yield_list`
 to the generator's caller,
-or ``None`` if :token:`~python-grammar:expression_list` is omitted.
+or ``None`` if :token:`~python-grammar:yield_list` is omitted.
 By suspended, we mean that all local state is
 retained, including the current bindings of local variables, the instruction
 pointer, the internal evaluation stack, and the state of any exception handling.
@@ -545,7 +576,7 @@ is already executing raises a :exc:`ValueError` exception.
    :meth:`~generator.__next__` method, the current yield expression always
    evaluates to :const:`None`.  The execution then continues to the next yield
    expression, where the generator is suspended again, and the value of the
-   :token:`~python-grammar:expression_list` is returned to :meth:`__next__`'s
+   :token:`~python-grammar:yield_list` is returned to :meth:`__next__`'s
    caller.  If the generator exits without yielding another value, a
    :exc:`StopIteration` exception is raised.
 
@@ -664,7 +695,7 @@ how a generator object would be used in a :keyword:`for` statement.
 Calling one of the asynchronous generator's methods returns an :term:`awaitable`
 object, and the execution starts when this object is awaited on. At that time,
 the execution proceeds to the first yield expression, where it is suspended
-again, returning the value of :token:`~python-grammar:expression_list` to the
+again, returning the value of :token:`~python-grammar:yield_list` to the
 awaiting coroutine. As with a generator, suspension means that all local state
 is retained, including the current bindings of local variables, the instruction
 pointer, the internal evaluation stack, and the state of any exception handling.
@@ -728,7 +759,7 @@ which are used to control the execution of a generator function.
    asynchronous generator function is resumed with an :meth:`~agen.__anext__`
    method, the current yield expression always evaluates to :const:`None` in the
    returned awaitable, which when run will continue to the next yield
-   expression. The value of the :token:`~python-grammar:expression_list` of the
+   expression. The value of the :token:`~python-grammar:yield_list` of the
    yield expression is the value of the :exc:`StopIteration` exception raised by
    the completing coroutine.  If the asynchronous generator exits without
    yielding another value, the awaitable instead raises a
@@ -741,7 +772,7 @@ which are used to control the execution of a generator function.
 .. coroutinemethod:: agen.asend(value)
 
    Returns an awaitable which when run resumes the execution of the
-   asynchronous generator. As with the :meth:`~generator.send()` method for a
+   asynchronous generator. As with the :meth:`~generator.send` method for a
    generator, this "sends" a value into the asynchronous generator function,
    and the *value* argument becomes the result of the current yield expression.
    The awaitable returned by the :meth:`asend` method will return the next
@@ -861,7 +892,7 @@ will generally select an element from the container. The subscription of a
 :ref:`GenericAlias <types-genericalias>` object.
 
 .. productionlist:: python-grammar
-   subscription: `primary` "[" `expression_list` "]"
+   subscription: `primary` "[" `flexible_expression_list` "]"
 
 When an object is subscripted, the interpreter will evaluate the primary and
 the expression list.
@@ -873,9 +904,13 @@ primary is subscripted, the evaluated result of the expression list will be
 passed to one of these methods. For more details on when ``__class_getitem__``
 is called instead of ``__getitem__``, see :ref:`classgetitem-versus-getitem`.
 
-If the expression list contains at least one comma, it will evaluate to a
-:class:`tuple` containing the items of the expression list. Otherwise, the
-expression list will evaluate to the value of the list's sole member.
+If the expression list contains at least one comma, or if any of the expressions
+are starred, the expression list will evaluate to a :class:`tuple` containing
+the items of the expression list. Otherwise, the expression list will evaluate
+to the value of the list's sole member.
+
+.. versionchanged:: 3.11
+   Expressions in an expression list may be starred. See :pep:`646`.
 
 For built-in objects, there are two types of objects that support subscription
 via :meth:`~object.__getitem__`:
@@ -1121,7 +1156,8 @@ a user-defined function:
    first thing the code block will do is bind the formal parameters to the
    arguments; this is described in section :ref:`function`.  When the code block
    executes a :keyword:`return` statement, this specifies the return value of the
-   function call.
+   function call.  If execution reaches the end of the code block without
+   executing a :keyword:`return` statement, the return value is ``None``.
 
 a built-in function or method:
    .. index::
@@ -1211,7 +1247,8 @@ Raising ``0.0`` to a negative power results in a :exc:`ZeroDivisionError`.
 Raising a negative number to a fractional power results in a :class:`complex`
 number. (In earlier versions it raised a :exc:`ValueError`.)
 
-This operation can be customized using the special :meth:`~object.__pow__` method.
+This operation can be customized using the special :meth:`~object.__pow__` and
+:meth:`~object.__rpow__` methods.
 
 .. _unary:
 
@@ -1299,6 +1336,9 @@ This operation can be customized using the special :meth:`~object.__mul__` and
 The ``@`` (at) operator is intended to be used for matrix multiplication.  No
 builtin Python types implement this operator.
 
+This operation can be customized using the special :meth:`~object.__matmul__` and
+:meth:`~object.__rmatmul__` methods.
+
 .. versionadded:: 3.5
 
 .. index::
@@ -1314,8 +1354,10 @@ integer; the result is that of mathematical division with the 'floor' function
 applied to the result.  Division by zero raises the :exc:`ZeroDivisionError`
 exception.
 
-This operation can be customized using the special :meth:`~object.__truediv__` and
-:meth:`~object.__floordiv__` methods.
+The division operation can be customized using the special :meth:`~object.__truediv__`
+and :meth:`~object.__rtruediv__` methods.
+The floor division operation can be customized using the special
+:meth:`~object.__floordiv__` and :meth:`~object.__rfloordiv__` methods.
 
 .. index::
    single: modulo
@@ -1324,7 +1366,7 @@ This operation can be customized using the special :meth:`~object.__truediv__` a
 The ``%`` (modulo) operator yields the remainder from the division of the first
 argument by the second.  The numeric arguments are first converted to a common
 type.  A zero right argument raises the :exc:`ZeroDivisionError` exception.  The
-arguments may be floating point numbers, e.g., ``3.14%0.7`` equals ``0.34``
+arguments may be floating-point numbers, e.g., ``3.14%0.7`` equals ``0.34``
 (since ``3.14`` equals ``4*0.7 + 0.34``.)  The modulo operator always yields a
 result with the same sign as its second operand (or zero); the absolute value of
 the result is strictly smaller than the absolute value of the second operand
@@ -1340,11 +1382,12 @@ also overloaded by string objects to perform old-style string formatting (also
 known as interpolation).  The syntax for string formatting is described in the
 Python Library Reference, section :ref:`old-string-formatting`.
 
-The *modulo* operation can be customized using the special :meth:`~object.__mod__` method.
+The *modulo* operation can be customized using the special :meth:`~object.__mod__`
+and :meth:`~object.__rmod__` methods.
 
 The floor division operator, the modulo operator, and the :func:`divmod`
-function are not defined for complex numbers.  Instead, convert to a floating
-point number using the :func:`abs` function if appropriate.
+function are not defined for complex numbers.  Instead, convert to a
+floating-point number using the :func:`abs` function if appropriate.
 
 .. index::
    single: addition
@@ -1367,7 +1410,8 @@ This operation can be customized using the special :meth:`~object.__add__` and
 The ``-`` (subtraction) operator yields the difference of its arguments.  The
 numeric arguments are first converted to a common type.
 
-This operation can be customized using the special :meth:`~object.__sub__` method.
+This operation can be customized using the special :meth:`~object.__sub__` and
+:meth:`~object.__rsub__` methods.
 
 
 .. _shifting:
@@ -1388,8 +1432,10 @@ The shifting operations have lower priority than the arithmetic operations:
 These operators accept integers as arguments.  They shift the first argument to
 the left or right by the number of bits given by the second argument.
 
-This operation can be customized using the special :meth:`~object.__lshift__` and
-:meth:`~object.__rshift__` methods.
+The left shift operation can be customized using the special :meth:`~object.__lshift__`
+and :meth:`~object.__rlshift__` methods.
+The right shift operation can be customized using the special :meth:`~object.__rshift__`
+and :meth:`~object.__rrshift__` methods.
 
 .. index:: pair: exception; ValueError
 
@@ -1762,6 +1808,9 @@ returns a boolean value regardless of the type of its argument
    single: assignment expression
    single: walrus operator
    single: named expression
+   pair: assignment; expression
+
+.. _assignment-expressions:
 
 Assignment expressions
 ======================
@@ -1864,10 +1913,12 @@ Expression lists
    single: , (comma); expression list
 
 .. productionlist:: python-grammar
+   starred_expression: ["*"] `or_expr`
+   flexible_expression: `assignment_expression` | `starred_expression`
+   flexible_expression_list: `flexible_expression` ("," `flexible_expression`)* [","]
+   starred_expression_list: `starred_expression` ("," `starred_expression`)* [","]
    expression_list: `expression` ("," `expression`)* [","]
-   starred_list: `starred_item` ("," `starred_item`)* [","]
-   starred_expression: `expression` | (`starred_item` ",")* [`starred_item`]
-   starred_item: `assignment_expression` | "*" `or_expr`
+   yield_list: `expression_list` | `starred_expression` "," [`starred_expression_list`]
 
 .. index:: pair: object; tuple
 
@@ -1888,6 +1939,9 @@ the unpacking.
 .. versionadded:: 3.5
    Iterable unpacking in expression lists, originally proposed by :pep:`448`.
 
+.. versionadded:: 3.11
+   Any item in an expression list may be starred. See :pep:`646`.
+
 .. index:: pair: trailing; comma
 
 A trailing comma is required only to create a one-item tuple,
diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
index f8c9724114da9e..ac363e8cfa00dc 100644
--- a/Doc/reference/import.rst
+++ b/Doc/reference/import.rst
@@ -281,7 +281,7 @@ When the named module is not found in :data:`sys.modules`, Python next
 searches :data:`sys.meta_path`, which contains a list of meta path finder
 objects.  These finders are queried in order to see if they know how to handle
 the named module.  Meta path finders must implement a method called
-:meth:`~importlib.abc.MetaPathFinder.find_spec()` which takes three arguments:
+:meth:`~importlib.abc.MetaPathFinder.find_spec` which takes three arguments:
 a name, an import path, and (optionally) a target module.  The meta path
 finder can use any strategy it wants to determine whether it can handle
 the named module or not.
@@ -292,7 +292,7 @@ spec object.  If it cannot handle the named module, it returns ``None``.  If
 a spec, then a :exc:`ModuleNotFoundError` is raised.  Any other exceptions
 raised are simply propagated up, aborting the import process.
 
-The :meth:`~importlib.abc.MetaPathFinder.find_spec()` method of meta path
+The :meth:`~importlib.abc.MetaPathFinder.find_spec` method of meta path
 finders is called with two or three arguments.  The first is the fully
 qualified name of the module being imported, for example ``foo.bar.baz``.
 The second argument is the path entries to use for the module search.  For
@@ -513,8 +513,10 @@ holding is that if you have ``sys.modules['spam']`` and
 ``sys.modules['spam.foo']`` (as you would after the above import), the latter
 must appear as the ``foo`` attribute of the former.
 
-Module spec
------------
+.. _module-specs:
+
+Module specs
+------------
 
 The import machinery uses a variety of information about each module
 during import, especially before loading.  Most of the information is
@@ -527,155 +529,44 @@ and the loader that executes it.  Most importantly, it allows the
 import machinery to perform the boilerplate operations of loading,
 whereas without a module spec the loader had that responsibility.
 
-The module's spec is exposed as the ``__spec__`` attribute on a module object.
+The module's spec is exposed as :attr:`module.__spec__`. Setting
+:attr:`!__spec__` appropriately applies equally to
+:ref:`modules initialized during interpreter startup <programs>`.
+The one exception is ``__main__``, where :attr:`!__spec__` is
+:ref:`set to None in some cases <main_spec>`.
+
 See :class:`~importlib.machinery.ModuleSpec` for details on the contents of
 the module spec.
 
 .. versionadded:: 3.4
 
-.. _import-mod-attrs:
-
-Import-related module attributes
---------------------------------
-
-The import machinery fills in these attributes on each module object
-during loading, based on the module's spec, before the loader executes
-the module.
-
-It is **strongly** recommended that you rely on :attr:`__spec__` and
-its attributes instead of any of the other individual attributes
-listed below.
-
-.. attribute:: __name__
-
-   The ``__name__`` attribute must be set to the fully qualified name of
-   the module.  This name is used to uniquely identify the module in
-   the import system.
-
-.. attribute:: __loader__
-
-   The ``__loader__`` attribute must be set to the loader object that
-   the import machinery used when loading the module.  This is mostly
-   for introspection, but can be used for additional loader-specific
-   functionality, for example getting data associated with a loader.
-
-   It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead of this attribute.
-
-   .. versionchanged:: 3.12
-      The value of ``__loader__`` is expected to be the same as
-      ``__spec__.loader``.  The use of ``__loader__`` is deprecated and slated
-      for removal in Python 3.14.
-
-.. attribute:: __package__
-
-   The module's ``__package__`` attribute may be set.  Its value must
-   be a string, but it can be the same value as its ``__name__``.  When
-   the module is a package, its ``__package__`` value should be set to
-   its ``__name__``.  When the module is not a package, ``__package__``
-   should be set to the empty string for top-level modules, or for
-   submodules, to the parent package's name.  See :pep:`366` for further
-   details.
-
-   This attribute is used instead of ``__name__`` to calculate explicit
-   relative imports for main modules, as defined in :pep:`366`.
-
-   It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead of this attribute.
-
-   .. versionchanged:: 3.6
-      The value of ``__package__`` is expected to be the same as
-      ``__spec__.parent``.
-
-   .. versionchanged:: 3.10
-      :exc:`ImportWarning` is raised if import falls back to
-      ``__package__`` instead of
-      :attr:`~importlib.machinery.ModuleSpec.parent`.
-
-   .. versionchanged:: 3.12
-      Raise :exc:`DeprecationWarning` instead of :exc:`ImportWarning`
-      when falling back to ``__package__``.
-
-
-.. attribute:: __spec__
-
-   The ``__spec__`` attribute must be set to the module spec that was
-   used when importing the module. Setting ``__spec__``
-   appropriately applies equally to :ref:`modules initialized during
-   interpreter startup <programs>`.  The one exception is ``__main__``,
-   where ``__spec__`` is :ref:`set to None in some cases <main_spec>`.
-
-   When ``__spec__.parent`` is not set, ``__package__`` is used as
-   a fallback.
-
-   .. versionadded:: 3.4
-
-   .. versionchanged:: 3.6
-      ``__spec__.parent`` is used as a fallback when ``__package__`` is
-      not defined.
-
-.. attribute:: __path__
-
-   If the module is a package (either regular or namespace), the module
-   object's ``__path__`` attribute must be set.  The value must be
-   iterable, but may be empty if ``__path__`` has no further significance.
-   If ``__path__`` is not empty, it must produce strings when iterated
-   over. More details on the semantics of ``__path__`` are given
-   :ref:`below <package-path-rules>`.
-
-   Non-package modules should not have a ``__path__`` attribute.
-
-.. attribute:: __file__
-.. attribute:: __cached__
-
-   ``__file__`` is optional (if set, value must be a string). It indicates
-   the pathname of the file from which the module was loaded (if
-   loaded from a file), or the pathname of the shared library file
-   for extension modules loaded dynamically from a shared library.
-   It might be missing for certain types of modules, such as C
-   modules that are statically linked into the interpreter, and the
-   import system may opt to leave it unset if it has no semantic
-   meaning (e.g. a module loaded from a database).
-
-   If ``__file__`` is set then the ``__cached__`` attribute might also
-   be set,  which is the path to any compiled version of
-   the code (e.g. byte-compiled file). The file does not need to exist
-   to set this attribute; the path can simply point to where the
-   compiled file would exist (see :pep:`3147`).
-
-   Note that ``__cached__`` may be set even if ``__file__`` is not
-   set.  However, that scenario is quite atypical.  Ultimately, the
-   loader is what makes use of the module spec provided by the finder
-   (from which ``__file__`` and ``__cached__`` are derived).  So
-   if a loader can load from a cached module but otherwise does not load
-   from a file, that atypical scenario may be appropriate.
-
-   It is **strongly** recommended that you rely on :attr:`__spec__`
-   instead of ``__cached__``.
-
 .. _package-path-rules:
 
-module.__path__
----------------
+__path__ attributes on modules
+------------------------------
 
-By definition, if a module has a ``__path__`` attribute, it is a package.
+The :attr:`~module.__path__` attribute should be a (possibly empty)
+:term:`sequence` of strings enumerating the locations where the package's
+submodules will be found. By definition, if a module has a :attr:`!__path__`
+attribute, it is a :term:`package`.
 
-A package's ``__path__`` attribute is used during imports of its subpackages.
+A package's :attr:`~module.__path__` attribute is used during imports of its
+subpackages.
 Within the import machinery, it functions much the same as :data:`sys.path`,
 i.e. providing a list of locations to search for modules during import.
-However, ``__path__`` is typically much more constrained than
-:data:`sys.path`.
+However, :attr:`!__path__` is typically much more constrained than
+:data:`!sys.path`.
 
-``__path__`` must be an iterable of strings, but it may be empty.
 The same rules used for :data:`sys.path` also apply to a package's
-``__path__``, and :data:`sys.path_hooks` (described below) are
-consulted when traversing a package's ``__path__``.
+:attr:`!__path__`. :data:`sys.path_hooks` (described below) are
+consulted when traversing a package's :attr:`!__path__`.
 
-A package's ``__init__.py`` file may set or alter the package's ``__path__``
+A package's ``__init__.py`` file may set or alter the package's
+:attr:`~module.__path__`
 attribute, and this was typically the way namespace packages were implemented
 prior to :pep:`420`.  With the adoption of :pep:`420`, namespace packages no
-longer need to supply ``__init__.py`` files containing only ``__path__``
-manipulation code; the import machinery automatically sets ``__path__``
+longer need to supply ``__init__.py`` files containing only :attr:`!__path__`
+manipulation code; the import machinery automatically sets :attr:`!__path__`
 correctly for the namespace package.
 
 Module reprs
diff --git a/Doc/reference/introduction.rst b/Doc/reference/introduction.rst
index cf186705e6e987..b7b70e6be5a5b7 100644
--- a/Doc/reference/introduction.rst
+++ b/Doc/reference/introduction.rst
@@ -74,7 +74,7 @@ PyPy
    and a Just in Time compiler. One of the goals of the project is to encourage
    experimentation with the language itself by making it easier to modify the
    interpreter (since it is written in Python).  Additional information is
-   available on `the PyPy project's home page <https://www.pypy.org/>`_.
+   available on `the PyPy project's home page <https://pypy.org/>`_.
 
 Each of these implementations varies in some way from the language as documented
 in this manual, or introduces specific information beyond what's covered in the
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index 41ea89fd234122..bffef9db8fb632 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -284,11 +284,10 @@ UAX-31, with elaboration and changes as defined below; see also :pep:`3131` for
 further details.
 
 Within the ASCII range (U+0001..U+007F), the valid characters for identifiers
-are the same as in Python 2.x: the uppercase and lowercase letters ``A`` through
+include the uppercase and lowercase letters ``A`` through
 ``Z``, the underscore ``_`` and, except for the first character, the digits
 ``0`` through ``9``.
-
-Python 3.0 introduces additional characters from outside the ASCII range (see
+Python 3.0 introduced additional characters from outside the ASCII range (see
 :pep:`3131`).  For these characters, the classification uses the version of the
 Unicode Character Database as included in the :mod:`unicodedata` module.
 
@@ -503,11 +502,10 @@ must be expressed with escapes.
    single: r"; raw string literal
 
 Both string and bytes literals may optionally be prefixed with a letter ``'r'``
-or ``'R'``; such strings are called :dfn:`raw strings` and treat backslashes as
-literal characters.  As a result, in string literals, ``'\U'`` and ``'\u'``
-escapes in raw strings are not treated specially. Given that Python 2.x's raw
-unicode literals behave differently than Python 3.x's the ``'ur'`` syntax
-is not supported.
+or ``'R'``; such constructs are called :dfn:`raw string literals`
+and :dfn:`raw bytes literals` respectively and treat backslashes as
+literal characters.  As a result, in raw string literals, ``'\U'`` and ``'\u'``
+escapes are not treated specially.
 
 .. versionadded:: 3.3
    The ``'rb'`` prefix of raw bytes literals has been added as a synonym
@@ -879,10 +877,10 @@ Numeric literals
 ----------------
 
 .. index:: number, numeric literal, integer literal
-   floating point literal, hexadecimal literal
+   floating-point literal, hexadecimal literal
    octal literal, binary literal, decimal literal, imaginary literal, complex literal
 
-There are three types of numeric literals: integers, floating point numbers, and
+There are three types of numeric literals: integers, floating-point numbers, and
 imaginary numbers.  There are no complex literals (complex numbers can be formed
 by adding a real number and an imaginary number).
 
@@ -943,10 +941,10 @@ Some examples of integer literals::
    single: _ (underscore); in numeric literal
 .. _floating:
 
-Floating point literals
+Floating-point literals
 -----------------------
 
-Floating point literals are described by the following lexical definitions:
+Floating-point literals are described by the following lexical definitions:
 
 .. productionlist:: python-grammar
    floatnumber: `pointfloat` | `exponentfloat`
@@ -958,10 +956,10 @@ Floating point literals are described by the following lexical definitions:
 
 Note that the integer and exponent parts are always interpreted using radix 10.
 For example, ``077e010`` is legal, and denotes the same number as ``77e10``. The
-allowed range of floating point literals is implementation-dependent.  As in
+allowed range of floating-point literals is implementation-dependent.  As in
 integer literals, underscores are supported for digit grouping.
 
-Some examples of floating point literals::
+Some examples of floating-point literals::
 
    3.14    10.    .001    1e100    3.14e-10    0e0    3.14_15_93
 
@@ -982,9 +980,9 @@ Imaginary literals are described by the following lexical definitions:
    imagnumber: (`floatnumber` | `digitpart`) ("j" | "J")
 
 An imaginary literal yields a complex number with a real part of 0.0.  Complex
-numbers are represented as a pair of floating point numbers and have the same
+numbers are represented as a pair of floating-point numbers and have the same
 restrictions on their range.  To create a complex number with a nonzero real
-part, add a floating point number to it, e.g., ``(3+4j)``.  Some examples of
+part, add a floating-point number to it, e.g., ``(3+4j)``.  Some examples of
 imaginary literals::
 
    3.14j   10.j    10j     .001j   1e100j   3.14e-10j   3.14_15_93j
@@ -1019,9 +1017,9 @@ The following tokens serve as delimiters in the grammar:
 .. code-block:: none
 
    (       )       [       ]       {       }
-   ,       :       .       ;       @       =       ->
-   +=      -=      *=      /=      //=     %=      @=
-   &=      |=      ^=      >>=     <<=     **=
+   ,       :       !       .       ;       @       =
+   ->      +=      -=      *=      /=      //=     %=
+   @=      &=      |=      ^=      >>=     <<=     **=
 
 The period can also occur in floating-point and imaginary literals.  A sequence
 of three periods has a special meaning as an ellipsis literal. The second half
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index a253482156d3b4..5e3ede69d1e5d7 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -293,7 +293,7 @@ statements, cannot be an unpacking) and the expression list, performs the binary
 operation specific to the type of assignment on the two operands, and assigns
 the result to the original target.  The target is only evaluated once.
 
-An augmented assignment expression like ``x += 1`` can be rewritten as ``x = x +
+An augmented assignment statement like ``x += 1`` can be rewritten as ``x = x +
 1`` to achieve a similar, but not exactly equal effect. In the augmented
 version, ``x`` is only evaluated once. Also, when possible, the actual operation
 is performed *in-place*, meaning that rather than creating a new object and
@@ -333,7 +333,9 @@ statement, of a variable or attribute annotation and an optional assignment stat
 
 The difference from normal :ref:`assignment` is that only a single target is allowed.
 
-For simple names as assignment targets, if in class or module scope,
+The assignment target is considered "simple" if it consists of a single
+name that is not enclosed in parentheses.
+For simple assignment targets, if in class or module scope,
 the annotations are evaluated and stored in a special class or module
 attribute :attr:`__annotations__`
 that is a dictionary mapping from variable names (mangled if private) to
@@ -341,7 +343,8 @@ evaluated annotations. This attribute is writable and is automatically
 created at the start of class or module body execution, if annotations
 are found statically.
 
-For expressions as assignment targets, the annotations are evaluated if
+If the assignment target is not simple (an attribute, subscript node, or
+parenthesized name), the annotation is evaluated if
 in class or module scope, but not stored.
 
 If a name is annotated in a function scope, then this name is local for
@@ -403,9 +406,9 @@ The extended form, ``assert expression1, expression2``, is equivalent to ::
 
 These equivalences assume that :const:`__debug__` and :exc:`AssertionError` refer to
 the built-in variables with those names.  In the current implementation, the
-built-in variable :const:`__debug__` is ``True`` under normal circumstances,
+built-in variable ``__debug__`` is ``True`` under normal circumstances,
 ``False`` when optimization is requested (command line option :option:`-O`).  The current
-code generator emits no code for an assert statement when optimization is
+code generator emits no code for an :keyword:`assert` statement when optimization is
 requested at compile time.  Note that it is unnecessary to include the source
 code for the expression that failed in the error message; it will be displayed
 as part of the stack trace.
@@ -528,8 +531,8 @@ The :keyword:`!yield` statement
    yield_stmt: `yield_expression`
 
 A :keyword:`yield` statement is semantically equivalent to a :ref:`yield
-expression <yieldexpr>`. The yield statement can be used to omit the parentheses
-that would otherwise be required in the equivalent yield expression
+expression <yieldexpr>`. The ``yield`` statement can be used to omit the
+parentheses that would otherwise be required in the equivalent yield expression
 statement. For example, the yield statements ::
 
   yield <expr>
@@ -541,7 +544,7 @@ are equivalent to the yield expression statements ::
   (yield from <expr>)
 
 Yield expressions and statements are only used when defining a :term:`generator`
-function, and are only used in the body of the generator function.  Using yield
+function, and are only used in the body of the generator function.  Using :keyword:`yield`
 in a function definition is sufficient to cause that definition to create a
 generator function instead of a normal function.
 
@@ -961,25 +964,14 @@ The :keyword:`!global` statement
 .. productionlist:: python-grammar
    global_stmt: "global" `identifier` ("," `identifier`)*
 
-The :keyword:`global` statement is a declaration which holds for the entire
-current code block.  It means that the listed identifiers are to be interpreted
-as globals.  It would be impossible to assign to a global variable without
+The :keyword:`global` statement causes the listed identifiers to be interpreted
+as globals. It would be impossible to assign to a global variable without
 :keyword:`!global`, although free variables may refer to globals without being
 declared global.
 
-Names listed in a :keyword:`global` statement must not be used in the same code
-block textually preceding that :keyword:`!global` statement.
-
-Names listed in a :keyword:`global` statement must not be defined as formal
-parameters, or as targets in :keyword:`with` statements or :keyword:`except` clauses, or in a :keyword:`for` target list, :keyword:`class`
-definition, function definition, :keyword:`import` statement, or variable
-annotation.
-
-.. impl-detail::
-
-   The current implementation does not enforce some of these restrictions, but
-   programs should not abuse this freedom, as future implementations may enforce
-   them or silently change the meaning of the program.
+The :keyword:`global` statement applies to the entire scope of a function or
+class body. A :exc:`SyntaxError` is raised if a variable is used or
+assigned to prior to its global declaration in the scope.
 
 .. index::
    pair: built-in function; exec
@@ -1015,7 +1007,7 @@ identifiers.  If a name is bound in more than one nonlocal scope, the
 nearest binding is used. If a name is not bound in any nonlocal scope,
 or if there is no nonlocal scope, a :exc:`SyntaxError` is raised.
 
-The nonlocal statement applies to the entire scope of a function or
+The :keyword:`nonlocal` statement applies to the entire scope of a function or
 class body. A :exc:`SyntaxError` is raised if a variable is used or
 assigned to prior to its nonlocal declaration in the scope.
 
diff --git a/Doc/requirements-oldest-sphinx.txt b/Doc/requirements-oldest-sphinx.txt
deleted file mode 100644
index fe45c91501a56a..00000000000000
--- a/Doc/requirements-oldest-sphinx.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-# Requirements to build the Python documentation, for the oldest supported
-# Sphinx version.
-#
-# We pin Sphinx and all of its dependencies to ensure a consistent environment.
-
-blurb
-python-docs-theme>=2022.1
-
-# Generated from:
-#     pip install "Sphinx~=6.2.1"
-#     pip freeze
-#
-# Sphinx 6.2.1 comes from ``needs_sphinx = '6.2.1'`` in ``Doc/conf.py``.
-
-alabaster==0.7.16
-Babel==2.15.0
-certifi==2024.2.2
-charset-normalizer==3.3.2
-docutils==0.19
-idna==3.7
-imagesize==1.4.1
-Jinja2==3.1.4
-MarkupSafe==2.1.5
-packaging==24.0
-Pygments==2.18.0
-requests==2.31.0
-snowballstemmer==2.2.0
-Sphinx==6.2.1
-sphinxcontrib-applehelp==1.0.8
-sphinxcontrib-devhelp==1.0.6
-sphinxcontrib-htmlhelp==2.0.5
-sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-qthelp==1.0.7
-sphinxcontrib-serializinghtml==1.1.10
-urllib3==2.2.1
diff --git a/Doc/requirements.txt b/Doc/requirements.txt
index 15675ab45fea71..32ff8f74d05bb6 100644
--- a/Doc/requirements.txt
+++ b/Doc/requirements.txt
@@ -3,16 +3,16 @@
 # Note that when updating this file, you will likely also have to update
 # the Doc/constraints.txt file.
 
-# Sphinx version is pinned so that new versions that introduce new warnings
+# The Sphinx version is pinned so that new versions that introduce new warnings
 # won't suddenly cause build failures. Updating the version is fine as long
 # as no warnings are raised by doing so.
-sphinx~=7.3.0
+# Keep this version in sync with ``Doc/conf.py``.
+sphinx~=8.1.0
 
 blurb
 
-sphinx-autobuild
-sphinxext-opengraph==0.7.5
-sphinx-notfound-page==1.0.0
+sphinxext-opengraph~=0.9.0
+sphinx-notfound-page~=1.0.0
 
 # The theme used by the documentation is stored separately, so we need
 # to install that as well.
diff --git a/Doc/tools/.nitignore b/Doc/tools/.nitignore
index 4790136a75cba9..9e36087ff10c3e 100644
--- a/Doc/tools/.nitignore
+++ b/Doc/tools/.nitignore
@@ -12,9 +12,6 @@ Doc/c-api/stable.rst
 Doc/c-api/type.rst
 Doc/c-api/typeobj.rst
 Doc/extending/extending.rst
-Doc/glossary.rst
-Doc/howto/descriptor.rst
-Doc/howto/enum.rst
 Doc/library/ast.rst
 Doc/library/asyncio-extending.rst
 Doc/library/asyncio-policy.rst
@@ -26,7 +23,6 @@ Doc/library/email.charset.rst
 Doc/library/email.compat32-message.rst
 Doc/library/email.errors.rst
 Doc/library/email.parser.rst
-Doc/library/email.policy.rst
 Doc/library/exceptions.rst
 Doc/library/functools.rst
 Doc/library/http.cookiejar.rst
@@ -74,13 +70,11 @@ Doc/library/xmlrpc.server.rst
 Doc/library/zlib.rst
 Doc/reference/compound_stmts.rst
 Doc/reference/datamodel.rst
-Doc/tutorial/datastructures.rst
 Doc/using/windows.rst
 Doc/whatsnew/2.4.rst
 Doc/whatsnew/2.5.rst
 Doc/whatsnew/2.6.rst
 Doc/whatsnew/2.7.rst
-Doc/whatsnew/3.0.rst
 Doc/whatsnew/3.3.rst
 Doc/whatsnew/3.4.rst
 Doc/whatsnew/3.5.rst
diff --git a/Doc/tools/check-warnings.py b/Doc/tools/check-warnings.py
index 809a8d63087e12..d9c4a33b775842 100644
--- a/Doc/tools/check-warnings.py
+++ b/Doc/tools/check-warnings.py
@@ -2,6 +2,7 @@
 """
 Check the output of running Sphinx in nit-picky mode (missing references).
 """
+
 from __future__ import annotations
 
 import argparse
@@ -13,6 +14,9 @@
 from pathlib import Path
 from typing import TextIO
 
+# Fail if NEWS nit found before this line number
+NEWS_NIT_THRESHOLD = 1400
+
 # Exclude these whether they're dirty or clean,
 # because they trigger a rebuild of dirty files.
 EXCLUDE_FILES = {
@@ -203,7 +207,9 @@ def annotate_diff(
 
 
 def fail_if_regression(
-    warnings: list[str], files_with_expected_nits: set[str], files_with_nits: set[str]
+    warnings: list[str],
+    files_with_expected_nits: set[str],
+    files_with_nits: set[str],
 ) -> int:
     """
     Ensure some files always pass Sphinx nit-picky mode (no missing references).
@@ -245,6 +251,26 @@ def fail_if_improved(
     return 0
 
 
+def fail_if_new_news_nit(warnings: list[str], threshold: int) -> int:
+    """
+    Ensure no warnings are found in the NEWS file before a given line number.
+    """
+    news_nits = (warning for warning in warnings if "/build/NEWS:" in warning)
+
+    # Nits found before the threshold line
+    new_news_nits = [
+        nit for nit in news_nits if int(nit.split(":")[1]) <= threshold
+    ]
+
+    if new_news_nits:
+        print("\nError: new NEWS nits:\n")
+        for warning in new_news_nits:
+            print(warning)
+        return -1
+
+    return 0
+
+
 def main(argv: list[str] | None = None) -> int:
     parser = argparse.ArgumentParser()
     parser.add_argument(
@@ -264,6 +290,14 @@ def main(argv: list[str] | None = None) -> int:
         action="store_true",
         help="Fail if new files with no nits are found",
     )
+    parser.add_argument(
+        "--fail-if-new-news-nit",
+        metavar="threshold",
+        type=int,
+        nargs="?",
+        const=NEWS_NIT_THRESHOLD,
+        help="Fail if new NEWS nit found before threshold line number",
+    )
 
     args = parser.parse_args(argv)
     if args.annotate_diff is not None and len(args.annotate_diff) > 2:
@@ -274,7 +308,8 @@ def main(argv: list[str] | None = None) -> int:
     exit_code = 0
 
     wrong_directory_msg = "Must run this script from the repo root"
-    assert Path("Doc").exists() and Path("Doc").is_dir(), wrong_directory_msg
+    if not Path("Doc").exists() or not Path("Doc").is_dir():
+        raise RuntimeError(wrong_directory_msg)
 
     with Path("Doc/sphinx-warnings.txt").open(encoding="UTF-8") as f:
         warnings = f.read().splitlines()
@@ -302,7 +337,12 @@ def main(argv: list[str] | None = None) -> int:
         )
 
     if args.fail_if_improved:
-        exit_code += fail_if_improved(files_with_expected_nits, files_with_nits)
+        exit_code += fail_if_improved(
+            files_with_expected_nits, files_with_nits
+        )
+
+    if args.fail_if_new_news_nit:
+        exit_code += fail_if_new_news_nit(warnings, args.fail_if_new_news_nit)
 
     return exit_code
 
diff --git a/Doc/tools/extensions/audit_events.py b/Doc/tools/extensions/audit_events.py
new file mode 100644
index 00000000000000..23d82c0f4414bf
--- /dev/null
+++ b/Doc/tools/extensions/audit_events.py
@@ -0,0 +1,264 @@
+"""Support for documenting audit events."""
+
+from __future__ import annotations
+
+import re
+from typing import TYPE_CHECKING
+
+from docutils import nodes
+from sphinx.errors import NoUri
+from sphinx.locale import _ as sphinx_gettext
+from sphinx.transforms.post_transforms import SphinxPostTransform
+from sphinx.util import logging
+from sphinx.util.docutils import SphinxDirective
+
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
+    from sphinx.application import Sphinx
+    from sphinx.builders import Builder
+    from sphinx.environment import BuildEnvironment
+
+logger = logging.getLogger(__name__)
+
+# This list of sets are allowable synonyms for event argument names.
+# If two names are in the same set, they are treated as equal for the
+# purposes of warning. This won't help if the number of arguments is
+# different!
+_SYNONYMS = [
+    frozenset({"file", "path", "fd"}),
+]
+
+
+class AuditEvents:
+    def __init__(self) -> None:
+        self.events: dict[str, list[str]] = {}
+        self.sources: dict[str, list[tuple[str, str]]] = {}
+
+    def __iter__(self) -> Iterator[tuple[str, list[str], tuple[str, str]]]:
+        for name, args in self.events.items():
+            for source in self.sources[name]:
+                yield name, args, source
+
+    def add_event(
+        self, name, args: list[str], source: tuple[str, str]
+    ) -> None:
+        if name in self.events:
+            self._check_args_match(name, args)
+        else:
+            self.events[name] = args
+        self.sources.setdefault(name, []).append(source)
+
+    def _check_args_match(self, name: str, args: list[str]) -> None:
+        current_args = self.events[name]
+        msg = (
+            f"Mismatched arguments for audit-event {name}: "
+            f"{current_args!r} != {args!r}"
+        )
+        if current_args == args:
+            return
+        if len(current_args) != len(args):
+            logger.warning(msg)
+            return
+        for a1, a2 in zip(current_args, args, strict=False):
+            if a1 == a2:
+                continue
+            if any(a1 in s and a2 in s for s in _SYNONYMS):
+                continue
+            logger.warning(msg)
+            return
+
+    def id_for(self, name) -> str:
+        source_count = len(self.sources.get(name, ()))
+        name_clean = re.sub(r"\W", "_", name)
+        return f"audit_event_{name_clean}_{source_count}"
+
+    def rows(self) -> Iterator[tuple[str, list[str], list[tuple[str, str]]]]:
+        for name in sorted(self.events.keys()):
+            yield name, self.events[name], self.sources[name]
+
+
+def initialise_audit_events(app: Sphinx) -> None:
+    """Initialise the audit_events attribute on the environment."""
+    if not hasattr(app.env, "audit_events"):
+        app.env.audit_events = AuditEvents()
+
+
+def audit_events_purge(
+    app: Sphinx, env: BuildEnvironment, docname: str
+) -> None:
+    """This is to remove traces of removed documents from env.audit_events."""
+    fresh_audit_events = AuditEvents()
+    for name, args, (doc, target) in env.audit_events:
+        if doc != docname:
+            fresh_audit_events.add_event(name, args, (doc, target))
+
+
+def audit_events_merge(
+    app: Sphinx,
+    env: BuildEnvironment,
+    docnames: list[str],
+    other: BuildEnvironment,
+) -> None:
+    """In Sphinx parallel builds, this merges audit_events from subprocesses."""
+    for name, args, source in other.audit_events:
+        env.audit_events.add_event(name, args, source)
+
+
+class AuditEvent(SphinxDirective):
+    has_content = True
+    required_arguments = 1
+    optional_arguments = 2
+    final_argument_whitespace = True
+
+    _label = [
+        sphinx_gettext(
+            "Raises an :ref:`auditing event <auditing>` "
+            "{name} with no arguments."
+        ),
+        sphinx_gettext(
+            "Raises an :ref:`auditing event <auditing>` "
+            "{name} with argument {args}."
+        ),
+        sphinx_gettext(
+            "Raises an :ref:`auditing event <auditing>` "
+            "{name} with arguments {args}."
+        ),
+    ]
+
+    def run(self) -> list[nodes.paragraph]:
+        name = self.arguments[0]
+        if len(self.arguments) >= 2 and self.arguments[1]:
+            args = [
+                arg
+                for argument in self.arguments[1].strip("'\"").split(",")
+                if (arg := argument.strip())
+            ]
+        else:
+            args = []
+        ids = []
+        try:
+            target = self.arguments[2].strip("\"'")
+        except (IndexError, TypeError):
+            target = None
+        if not target:
+            target = self.env.audit_events.id_for(name)
+            ids.append(target)
+        self.env.audit_events.add_event(name, args, (self.env.docname, target))
+
+        node = nodes.paragraph("", classes=["audit-hook"], ids=ids)
+        self.set_source_info(node)
+        if self.content:
+            node.rawsource = '\n'.join(self.content)  # for gettext
+            self.state.nested_parse(self.content, self.content_offset, node)
+        else:
+            num_args = min(2, len(args))
+            text = self._label[num_args].format(
+                name=f"``{name}``",
+                args=", ".join(f"``{a}``" for a in args),
+            )
+            node.rawsource = text  # for gettext
+            parsed, messages = self.state.inline_text(text, self.lineno)
+            node += parsed
+            node += messages
+        return [node]
+
+
+class audit_event_list(nodes.General, nodes.Element):  # noqa: N801
+    pass
+
+
+class AuditEventListDirective(SphinxDirective):
+    def run(self) -> list[audit_event_list]:
+        return [audit_event_list()]
+
+
+class AuditEventListTransform(SphinxPostTransform):
+    default_priority = 500
+
+    def run(self) -> None:
+        if self.document.next_node(audit_event_list) is None:
+            return
+
+        table = self._make_table(self.app.builder, self.env.docname)
+        for node in self.document.findall(audit_event_list):
+            node.replace_self(table)
+
+    def _make_table(self, builder: Builder, docname: str) -> nodes.table:
+        table = nodes.table(cols=3)
+        group = nodes.tgroup(
+            "",
+            nodes.colspec(colwidth=30),
+            nodes.colspec(colwidth=55),
+            nodes.colspec(colwidth=15),
+            cols=3,
+        )
+        head = nodes.thead()
+        body = nodes.tbody()
+
+        table += group
+        group += head
+        group += body
+
+        head += nodes.row(
+            "",
+            nodes.entry("", nodes.paragraph("", "Audit event")),
+            nodes.entry("", nodes.paragraph("", "Arguments")),
+            nodes.entry("", nodes.paragraph("", "References")),
+        )
+
+        for name, args, sources in builder.env.audit_events.rows():
+            body += self._make_row(builder, docname, name, args, sources)
+
+        return table
+
+    @staticmethod
+    def _make_row(
+        builder: Builder,
+        docname: str,
+        name: str,
+        args: list[str],
+        sources: list[tuple[str, str]],
+    ) -> nodes.row:
+        row = nodes.row()
+        name_node = nodes.paragraph("", nodes.Text(name))
+        row += nodes.entry("", name_node)
+
+        args_node = nodes.paragraph()
+        for arg in args:
+            args_node += nodes.literal(arg, arg)
+            args_node += nodes.Text(", ")
+        if len(args_node.children) > 0:
+            args_node.children.pop()  # remove trailing comma
+        row += nodes.entry("", args_node)
+
+        backlinks_node = nodes.paragraph()
+        backlinks = enumerate(sorted(set(sources)), start=1)
+        for i, (doc, label) in backlinks:
+            if isinstance(label, str):
+                ref = nodes.reference("", f"[{i}]", internal=True)
+                try:
+                    target = (
+                        f"{builder.get_relative_uri(docname, doc)}#{label}"
+                    )
+                except NoUri:
+                    continue
+                else:
+                    ref["refuri"] = target
+                    backlinks_node += ref
+        row += nodes.entry("", backlinks_node)
+        return row
+
+
+def setup(app: Sphinx):
+    app.add_directive("audit-event", AuditEvent)
+    app.add_directive("audit-event-table", AuditEventListDirective)
+    app.add_post_transform(AuditEventListTransform)
+    app.connect("builder-inited", initialise_audit_events)
+    app.connect("env-purge-doc", audit_events_purge)
+    app.connect("env-merge-info", audit_events_merge)
+    return {
+        "version": "1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }
diff --git a/Doc/tools/extensions/availability.py b/Doc/tools/extensions/availability.py
new file mode 100644
index 00000000000000..47833fdcb87590
--- /dev/null
+++ b/Doc/tools/extensions/availability.py
@@ -0,0 +1,125 @@
+"""Support for documenting platform availability"""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from docutils import nodes
+from sphinx import addnodes
+from sphinx.util import logging
+from sphinx.util.docutils import SphinxDirective
+
+if TYPE_CHECKING:
+    from sphinx.application import Sphinx
+    from sphinx.util.typing import ExtensionMetadata
+
+logger = logging.getLogger("availability")
+
+# known platform, libc, and threading implementations
+_PLATFORMS = frozenset({
+    "AIX",
+    "Android",
+    "BSD",
+    "DragonFlyBSD",
+    "Emscripten",
+    "FreeBSD",
+    "GNU/kFreeBSD",
+    "iOS",
+    "Linux",
+    "macOS",
+    "NetBSD",
+    "OpenBSD",
+    "POSIX",
+    "Solaris",
+    "Unix",
+    "VxWorks",
+    "WASI",
+    "Windows",
+})
+_LIBC = frozenset({
+    "BSD libc",
+    "glibc",
+    "musl",
+})
+_THREADING = frozenset({
+    # POSIX platforms with pthreads
+    "pthreads",
+})
+KNOWN_PLATFORMS = _PLATFORMS | _LIBC | _THREADING
+
+
+class Availability(SphinxDirective):
+    has_content = True
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+
+    def run(self) -> list[nodes.container]:
+        title = "Availability"
+        refnode = addnodes.pending_xref(
+            title,
+            nodes.inline(title, title, classes=["xref", "std", "std-ref"]),
+            refdoc=self.env.docname,
+            refdomain="std",
+            refexplicit=True,
+            reftarget="availability",
+            reftype="ref",
+            refwarn=True,
+        )
+        sep = nodes.Text(": ")
+        parsed, msgs = self.state.inline_text(self.arguments[0], self.lineno)
+        pnode = nodes.paragraph(title, "", refnode, sep, *parsed, *msgs)
+        self.set_source_info(pnode)
+        cnode = nodes.container("", pnode, classes=["availability"])
+        self.set_source_info(cnode)
+        if self.content:
+            self.state.nested_parse(self.content, self.content_offset, cnode)
+        self.parse_platforms()
+
+        return [cnode]
+
+    def parse_platforms(self) -> dict[str, str | bool]:
+        """Parse platform information from arguments
+
+        Arguments is a comma-separated string of platforms. A platform may
+        be prefixed with "not " to indicate that a feature is not available.
+
+        Example::
+
+           .. availability:: Windows, Linux >= 4.2, not WASI
+
+        Arguments like "Linux >= 3.17 with glibc >= 2.27" are currently not
+        parsed into separate tokens.
+        """
+        platforms = {}
+        for arg in self.arguments[0].rstrip(".").split(","):
+            arg = arg.strip()
+            platform, _, version = arg.partition(" >= ")
+            if platform.startswith("not "):
+                version = False
+                platform = platform.removeprefix("not ")
+            elif not version:
+                version = True
+            platforms[platform] = version
+
+        if unknown := set(platforms).difference(KNOWN_PLATFORMS):
+            logger.warning(
+                "Unknown platform%s or syntax '%s' in '.. availability:: %s', "
+                "see %s:KNOWN_PLATFORMS for a set of known platforms.",
+                "s" if len(platforms) != 1 else "",
+                " ".join(sorted(unknown)),
+                self.arguments[0],
+                __file__,
+            )
+
+        return platforms
+
+
+def setup(app: Sphinx) -> ExtensionMetadata:
+    app.add_directive("availability", Availability)
+
+    return {
+        "version": "1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }
diff --git a/Doc/tools/extensions/c_annotations.py b/Doc/tools/extensions/c_annotations.py
index 7916b178f1c0f1..089614a1f6c421 100644
--- a/Doc/tools/extensions/c_annotations.py
+++ b/Doc/tools/extensions/c_annotations.py
@@ -1,226 +1,291 @@
-"""
-    c_annotations.py
-    ~~~~~~~~~~~~~~~~
-
-    Supports annotations for C API elements:
+"""Support annotations for C API elements.
 
-    * reference count annotations for C API functions.  Based on
-      refcount.py and anno-api.py in the old Python documentation tools.
+* Reference count annotations for C API functions.
+* Stable ABI annotations
+* Limited API annotations
 
-    * stable API annotations
+Configuration:
+* Set ``refcount_file`` to the path to the reference count data file.
+* Set ``stable_abi_file`` to the path to stable ABI list.
+"""
 
-    Usage:
-    * Set the `refcount_file` config value to the path to the reference
-    count data file.
-    * Set the `stable_abi_file` config value to the path to stable ABI list.
+from __future__ import annotations
 
-    :copyright: Copyright 2007-2014 by Georg Brandl.
-    :license: Python license.
-"""
+import csv
+import dataclasses
+from pathlib import Path
+from typing import TYPE_CHECKING
 
-from os import path
 from docutils import nodes
-from docutils.parsers.rst import directives
-from docutils.parsers.rst import Directive
 from docutils.statemachine import StringList
-from sphinx.locale import _ as sphinx_gettext
-import csv
-
 from sphinx import addnodes
-from sphinx.domains.c import CObject
+from sphinx.locale import _ as sphinx_gettext
+from sphinx.util.docutils import SphinxDirective
 
+if TYPE_CHECKING:
+    from sphinx.application import Sphinx
+    from sphinx.util.typing import ExtensionMetadata
 
-REST_ROLE_MAP = {
-    'function': 'func',
-    'macro': 'macro',
-    'member': 'member',
-    'type': 'type',
-    'var': 'data',
+ROLE_TO_OBJECT_TYPE = {
+    "func": "function",
+    "macro": "macro",
+    "member": "member",
+    "type": "type",
+    "data": "var",
 }
 
 
-class RCEntry:
-    def __init__(self, name):
-        self.name = name
-        self.args = []
-        self.result_type = ''
-        self.result_refs = None
-
-
-class Annotations:
-    def __init__(self, refcount_filename, stable_abi_file):
-        self.refcount_data = {}
-        with open(refcount_filename, encoding='utf8') as fp:
-            for line in fp:
-                line = line.strip()
-                if line[:1] in ("", "#"):
-                    # blank lines and comments
-                    continue
-                parts = line.split(":", 4)
-                if len(parts) != 5:
-                    raise ValueError(f"Wrong field count in {line!r}")
-                function, type, arg, refcount, comment = parts
-                # Get the entry, creating it if needed:
-                try:
-                    entry = self.refcount_data[function]
-                except KeyError:
-                    entry = self.refcount_data[function] = RCEntry(function)
-                if not refcount or refcount == "null":
-                    refcount = None
-                else:
-                    refcount = int(refcount)
-                # Update the entry with the new parameter or the result
-                # information.
-                if arg:
-                    entry.args.append((arg, type, refcount))
-                else:
-                    entry.result_type = type
-                    entry.result_refs = refcount
-
-        self.stable_abi_data = {}
-        with open(stable_abi_file, encoding='utf8') as fp:
-            for record in csv.DictReader(fp):
-                name = record['name']
-                self.stable_abi_data[name] = record
-
-    def add_annotations(self, app, doctree):
-        for node in doctree.findall(addnodes.desc_content):
-            par = node.parent
-            if par['domain'] != 'c':
-                continue
-            if not par[0].has_key('ids') or not par[0]['ids']:
-                continue
-            name = par[0]['ids'][0]
-            if name.startswith("c."):
-                name = name[2:]
-
-            objtype = par['objtype']
-
-            # Stable ABI annotation. These have two forms:
-            #   Part of the [Stable ABI](link).
-            #   Part of the [Stable ABI](link) since version X.Y.
-            # For structs, there's some more info in the message:
-            #   Part of the [Limited API](link) (as an opaque struct).
-            #   Part of the [Stable ABI](link) (including all members).
-            #   Part of the [Limited API](link) (Only some members are part
-            #       of the stable ABI.).
-            # ... all of which can have "since version X.Y" appended.
-            record = self.stable_abi_data.get(name)
-            if record:
-                if record['role'] != objtype:
-                    raise ValueError(
-                        f"Object type mismatch in limited API annotation "
-                        f"for {name}: {record['role']!r} != {objtype!r}")
-                stable_added = record['added']
-                message = sphinx_gettext('Part of the')
-                message = message.center(len(message) + 2)
-                emph_node = nodes.emphasis(message, message,
-                                           classes=['stableabi'])
-                ref_node = addnodes.pending_xref(
-                    'Stable ABI', refdomain="std", reftarget='stable',
-                    reftype='ref', refexplicit="False")
-                struct_abi_kind = record['struct_abi_kind']
-                if struct_abi_kind in {'opaque', 'members'}:
-                    ref_node += nodes.Text(sphinx_gettext('Limited API'))
-                else:
-                    ref_node += nodes.Text(sphinx_gettext('Stable ABI'))
-                emph_node += ref_node
-                if struct_abi_kind == 'opaque':
-                    emph_node += nodes.Text(' ' + sphinx_gettext('(as an opaque struct)'))
-                elif struct_abi_kind == 'full-abi':
-                    emph_node += nodes.Text(' ' + sphinx_gettext('(including all members)'))
-                if record['ifdef_note']:
-                    emph_node += nodes.Text(' ' + record['ifdef_note'])
-                if stable_added == '3.2':
-                    # Stable ABI was introduced in 3.2.
-                    pass
-                else:
-                    emph_node += nodes.Text(' ' + sphinx_gettext('since version %s') % stable_added)
-                emph_node += nodes.Text('.')
-                if struct_abi_kind == 'members':
-                    emph_node += nodes.Text(
-                        ' ' + sphinx_gettext('(Only some members are part of the stable ABI.)'))
-                node.insert(0, emph_node)
-
-            # Unstable API annotation.
-            if name.startswith('PyUnstable'):
-                warn_node = nodes.admonition(
-                    classes=['unstable-c-api', 'warning'])
-                message = sphinx_gettext('This is') + ' '
-                emph_node = nodes.emphasis(message, message)
-                ref_node = addnodes.pending_xref(
-                    'Unstable API', refdomain="std",
-                    reftarget='unstable-c-api',
-                    reftype='ref', refexplicit="False")
-                ref_node += nodes.Text(sphinx_gettext('Unstable API'))
-                emph_node += ref_node
-                emph_node += nodes.Text(sphinx_gettext('. It may change without warning in minor releases.'))
-                warn_node += emph_node
-                node.insert(0, warn_node)
-
-            # Return value annotation
-            if objtype != 'function':
-                continue
-            entry = self.refcount_data.get(name)
-            if not entry:
-                continue
-            elif not entry.result_type.endswith("Object*"):
-                continue
-            classes = ['refcount']
-            if entry.result_refs is None:
-                rc = sphinx_gettext('Return value: Always NULL.')
-                classes.append('return_null')
-            elif entry.result_refs:
-                rc = sphinx_gettext('Return value: New reference.')
-                classes.append('return_new_ref')
-            else:
-                rc = sphinx_gettext('Return value: Borrowed reference.')
-                classes.append('return_borrowed_ref')
-            node.insert(0, nodes.emphasis(rc, rc, classes=classes))
-
-
-def init_annotations(app):
-    annotations = Annotations(
-        path.join(app.srcdir, app.config.refcount_file),
-        path.join(app.srcdir, app.config.stable_abi_file),
+@dataclasses.dataclass(slots=True)
+class RefCountEntry:
+    # Name of the function.
+    name: str
+    # List of (argument name, type, refcount effect) tuples.
+    # (Currently not used. If it was, a dataclass might work better.)
+    args: list = dataclasses.field(default_factory=list)
+    # Return type of the function.
+    result_type: str = ""
+    # Reference count effect for the return value.
+    result_refs: int | None = None
+
+
+@dataclasses.dataclass(frozen=True, slots=True)
+class StableABIEntry:
+    # Role of the object.
+    # Source: Each [item_kind] in stable_abi.toml is mapped to a C Domain role.
+    role: str
+    # Name of the object.
+    # Source: [<item_kind>.*] in stable_abi.toml.
+    name: str
+    # Version when the object was added to the stable ABI.
+    # (Source: [<item_kind>.*.added] in stable_abi.toml.
+    added: str
+    # An explananatory blurb for the ifdef.
+    # Source: ``feature_macro.*.doc`` in stable_abi.toml.
+    ifdef_note: str
+    # Defines how much of the struct is exposed. Only relevant for structs.
+    # Source: [<item_kind>.*.struct_abi_kind] in stable_abi.toml.
+    struct_abi_kind: str
+
+
+def read_refcount_data(refcount_filename: Path) -> dict[str, RefCountEntry]:
+    refcount_data = {}
+    refcounts = refcount_filename.read_text(encoding="utf8")
+    for line in refcounts.splitlines():
+        line = line.strip()
+        if not line or line.startswith("#"):
+            # blank lines and comments
+            continue
+
+        # Each line is of the form
+        # function ':' type ':' [param name] ':' [refcount effect] ':' [comment]
+        parts = line.split(":", 4)
+        if len(parts) != 5:
+            raise ValueError(f"Wrong field count in {line!r}")
+        function, type, arg, refcount, _comment = parts
+
+        # Get the entry, creating it if needed:
+        try:
+            entry = refcount_data[function]
+        except KeyError:
+            entry = refcount_data[function] = RefCountEntry(function)
+        if not refcount or refcount == "null":
+            refcount = None
+        else:
+            refcount = int(refcount)
+        # Update the entry with the new parameter
+        # or the result information.
+        if arg:
+            entry.args.append((arg, type, refcount))
+        else:
+            entry.result_type = type
+            entry.result_refs = refcount
+
+    return refcount_data
+
+
+def read_stable_abi_data(stable_abi_file: Path) -> dict[str, StableABIEntry]:
+    stable_abi_data = {}
+    with open(stable_abi_file, encoding="utf8") as fp:
+        for record in csv.DictReader(fp):
+            name = record["name"]
+            stable_abi_data[name] = StableABIEntry(**record)
+
+    return stable_abi_data
+
+
+def add_annotations(app: Sphinx, doctree: nodes.document) -> None:
+    state = app.env.domaindata["c_annotations"]
+    refcount_data = state["refcount_data"]
+    stable_abi_data = state["stable_abi_data"]
+    for node in doctree.findall(addnodes.desc_content):
+        par = node.parent
+        if par["domain"] != "c":
+            continue
+        if not par[0].get("ids", None):
+            continue
+        name = par[0]["ids"][0].removeprefix("c.")
+        objtype = par["objtype"]
+
+        # Stable ABI annotation.
+        if record := stable_abi_data.get(name):
+            if ROLE_TO_OBJECT_TYPE[record.role] != objtype:
+                msg = (
+                    f"Object type mismatch in limited API annotation for {name}: "
+                    f"{ROLE_TO_OBJECT_TYPE[record.role]!r} != {objtype!r}"
+                )
+                raise ValueError(msg)
+            annotation = _stable_abi_annotation(record)
+            node.insert(0, annotation)
+
+        # Unstable API annotation.
+        if name.startswith("PyUnstable"):
+            annotation = _unstable_api_annotation()
+            node.insert(0, annotation)
+
+        # Return value annotation
+        if objtype != "function":
+            continue
+        if name not in refcount_data:
+            continue
+        entry = refcount_data[name]
+        if not entry.result_type.endswith("Object*"):
+            continue
+        annotation = _return_value_annotation(entry.result_refs)
+        node.insert(0, annotation)
+
+
+def _stable_abi_annotation(record: StableABIEntry) -> nodes.emphasis:
+    """Create the Stable ABI annotation.
+
+    These have two forms:
+      Part of the `Stable ABI <link>`_.
+      Part of the `Stable ABI <link>`_ since version X.Y.
+    For structs, there's some more info in the message:
+      Part of the `Limited API <link>`_ (as an opaque struct).
+      Part of the `Stable ABI <link>`_ (including all members).
+      Part of the `Limited API <link>`_ (Only some members are part
+          of the stable ABI.).
+    ... all of which can have "since version X.Y" appended.
+    """
+    stable_added = record.added
+    message = sphinx_gettext("Part of the")
+    message = message.center(len(message) + 2)
+    emph_node = nodes.emphasis(message, message, classes=["stableabi"])
+    ref_node = addnodes.pending_xref(
+        "Stable ABI",
+        refdomain="std",
+        reftarget="stable",
+        reftype="ref",
+        refexplicit="False",
+    )
+    struct_abi_kind = record.struct_abi_kind
+    if struct_abi_kind in {"opaque", "members"}:
+        ref_node += nodes.Text(sphinx_gettext("Limited API"))
+    else:
+        ref_node += nodes.Text(sphinx_gettext("Stable ABI"))
+    emph_node += ref_node
+    if struct_abi_kind == "opaque":
+        emph_node += nodes.Text(" " + sphinx_gettext("(as an opaque struct)"))
+    elif struct_abi_kind == "full-abi":
+        emph_node += nodes.Text(
+            " " + sphinx_gettext("(including all members)")
+        )
+    if record.ifdef_note:
+        emph_node += nodes.Text(f" {record.ifdef_note}")
+    if stable_added == "3.2":
+        # Stable ABI was introduced in 3.2.
+        pass
+    else:
+        emph_node += nodes.Text(
+            " " + sphinx_gettext("since version %s") % stable_added
+        )
+    emph_node += nodes.Text(".")
+    if struct_abi_kind == "members":
+        msg = " " + sphinx_gettext(
+            "(Only some members are part of the stable ABI.)"
+        )
+        emph_node += nodes.Text(msg)
+    return emph_node
+
+
+def _unstable_api_annotation() -> nodes.admonition:
+    ref_node = addnodes.pending_xref(
+        "Unstable API",
+        nodes.Text(sphinx_gettext("Unstable API")),
+        refdomain="std",
+        reftarget="unstable-c-api",
+        reftype="ref",
+        refexplicit="False",
+    )
+    emph_node = nodes.emphasis(
+        "This is ",
+        sphinx_gettext("This is") + " ",
+        ref_node,
+        nodes.Text(
+            sphinx_gettext(
+                ". It may change without warning in minor releases."
+            )
+        ),
+    )
+    return nodes.admonition(
+        "",
+        emph_node,
+        classes=["unstable-c-api", "warning"],
     )
-    app.connect('doctree-read', annotations.add_annotations)
 
-    class LimitedAPIList(Directive):
 
-        has_content = False
-        required_arguments = 0
-        optional_arguments = 0
-        final_argument_whitespace = True
+def _return_value_annotation(result_refs: int | None) -> nodes.emphasis:
+    classes = ["refcount"]
+    if result_refs is None:
+        rc = sphinx_gettext("Return value: Always NULL.")
+        classes.append("return_null")
+    elif result_refs:
+        rc = sphinx_gettext("Return value: New reference.")
+        classes.append("return_new_ref")
+    else:
+        rc = sphinx_gettext("Return value: Borrowed reference.")
+        classes.append("return_borrowed_ref")
+    return nodes.emphasis(rc, rc, classes=classes)
 
-        def run(self):
-            content = []
-            for record in annotations.stable_abi_data.values():
-                role = REST_ROLE_MAP[record['role']]
-                name = record['name']
-                content.append(f'* :c:{role}:`{name}`')
 
-            pnode = nodes.paragraph()
-            self.state.nested_parse(StringList(content), 0, pnode)
-            return [pnode]
+class LimitedAPIList(SphinxDirective):
+    has_content = False
+    required_arguments = 0
+    optional_arguments = 0
+    final_argument_whitespace = True
 
-    app.add_directive('limited-api-list', LimitedAPIList)
+    def run(self) -> list[nodes.Node]:
+        state = self.env.domaindata["c_annotations"]
+        content = [
+            f"* :c:{record.role}:`{record.name}`"
+            for record in state["stable_abi_data"].values()
+        ]
+        node = nodes.paragraph()
+        self.state.nested_parse(StringList(content), 0, node)
+        return [node]
 
 
-def setup(app):
-    app.add_config_value('refcount_file', '', True)
-    app.add_config_value('stable_abi_file', '', True)
-    app.connect('builder-inited', init_annotations)
+def init_annotations(app: Sphinx) -> None:
+    # Using domaindata is a bit hack-ish,
+    # but allows storing state without a global variable or closure.
+    app.env.domaindata["c_annotations"] = state = {}
+    state["refcount_data"] = read_refcount_data(
+        Path(app.srcdir, app.config.refcount_file)
+    )
+    state["stable_abi_data"] = read_stable_abi_data(
+        Path(app.srcdir, app.config.stable_abi_file)
+    )
 
-    # monkey-patch C object...
-    CObject.option_spec = {
-        'noindex': directives.flag,
-        'stableabi': directives.flag,
-    }
-    old_handle_signature = CObject.handle_signature
 
-    def new_handle_signature(self, sig, signode):
-        signode.parent['stableabi'] = 'stableabi' in self.options
-        return old_handle_signature(self, sig, signode)
-    CObject.handle_signature = new_handle_signature
-    return {'version': '1.0', 'parallel_read_safe': True}
+def setup(app: Sphinx) -> ExtensionMetadata:
+    app.add_config_value("refcount_file", "", "env", types={str})
+    app.add_config_value("stable_abi_file", "", "env", types={str})
+    app.add_directive("limited-api-list", LimitedAPIList)
+    app.connect("builder-inited", init_annotations)
+    app.connect("doctree-read", add_annotations)
+
+    return {
+        "version": "1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }
diff --git a/Doc/tools/extensions/changes.py b/Doc/tools/extensions/changes.py
new file mode 100644
index 00000000000000..8de5e7f78c6627
--- /dev/null
+++ b/Doc/tools/extensions/changes.py
@@ -0,0 +1,90 @@
+"""Support for documenting version of changes, additions, deprecations."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from sphinx.domains.changeset import (
+    VersionChange,
+    versionlabel_classes,
+    versionlabels,
+)
+from sphinx.locale import _ as sphinx_gettext
+
+if TYPE_CHECKING:
+    from docutils.nodes import Node
+    from sphinx.application import Sphinx
+    from sphinx.util.typing import ExtensionMetadata
+
+
+def expand_version_arg(argument: str, release: str) -> str:
+    """Expand "next" to the current version"""
+    if argument == "next":
+        return sphinx_gettext("{} (unreleased)").format(release)
+    return argument
+
+
+class PyVersionChange(VersionChange):
+    def run(self) -> list[Node]:
+        # Replace the 'next' special token with the current development version
+        self.arguments[0] = expand_version_arg(
+            self.arguments[0], self.config.release
+        )
+        return super().run()
+
+
+class DeprecatedRemoved(VersionChange):
+    required_arguments = 2
+
+    _deprecated_label = sphinx_gettext(
+        "Deprecated since version %s, will be removed in version %s"
+    )
+    _removed_label = sphinx_gettext(
+        "Deprecated since version %s, removed in version %s"
+    )
+
+    def run(self) -> list[Node]:
+        # Replace the first two arguments (deprecated version and removed version)
+        # with a single tuple of both versions.
+        version_deprecated = expand_version_arg(
+            self.arguments[0], self.config.release
+        )
+        version_removed = self.arguments.pop(1)
+        if version_removed == "next":
+            raise ValueError(
+                "deprecated-removed:: second argument cannot be `next`"
+            )
+        self.arguments[0] = version_deprecated, version_removed
+
+        # Set the label based on if we have reached the removal version
+        current_version = tuple(map(int, self.config.version.split(".")))
+        removed_version = tuple(map(int, version_removed.split(".")))
+        if current_version < removed_version:
+            versionlabels[self.name] = self._deprecated_label
+            versionlabel_classes[self.name] = "deprecated"
+        else:
+            versionlabels[self.name] = self._removed_label
+            versionlabel_classes[self.name] = "removed"
+        try:
+            return super().run()
+        finally:
+            # reset versionlabels and versionlabel_classes
+            versionlabels[self.name] = ""
+            versionlabel_classes[self.name] = ""
+
+
+def setup(app: Sphinx) -> ExtensionMetadata:
+    # Override Sphinx's directives with support for 'next'
+    app.add_directive("versionadded", PyVersionChange, override=True)
+    app.add_directive("versionchanged", PyVersionChange, override=True)
+    app.add_directive("versionremoved", PyVersionChange, override=True)
+    app.add_directive("deprecated", PyVersionChange, override=True)
+
+    # Register the ``.. deprecated-removed::`` directive
+    app.add_directive("deprecated-removed", DeprecatedRemoved)
+
+    return {
+        "version": "1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }
diff --git a/Doc/tools/extensions/escape4chm.py b/Doc/tools/extensions/escape4chm.py
deleted file mode 100644
index 89970975b9032b..00000000000000
--- a/Doc/tools/extensions/escape4chm.py
+++ /dev/null
@@ -1,58 +0,0 @@
-"""
-Escape the `body` part of .chm source file to 7-bit ASCII, to fix visual
-effect on some MBCS Windows systems.
-
-https://bugs.python.org/issue32174
-"""
-
-import pathlib
-import re
-from html.entities import codepoint2name
-
-from sphinx.util.logging import getLogger
-
-# escape the characters which codepoint > 0x7F
-def _process(string):
-    def escape(matchobj):
-        codepoint = ord(matchobj.group(0))
-
-        name = codepoint2name.get(codepoint)
-        if name is None:
-            return '&#%d;' % codepoint
-        else:
-            return '&%s;' % name
-
-    return re.sub(r'[^\x00-\x7F]', escape, string)
-
-def escape_for_chm(app, pagename, templatename, context, doctree):
-    # only works for .chm output
-    if getattr(app.builder, 'name', '') != 'htmlhelp':
-        return
-
-    # escape the `body` part to 7-bit ASCII
-    body = context.get('body')
-    if body is not None:
-        context['body'] = _process(body)
-
-def fixup_keywords(app, exception):
-    # only works for .chm output
-    if getattr(app.builder, 'name', '') != 'htmlhelp' or exception:
-        return
-
-    getLogger(__name__).info('fixing HTML escapes in keywords file...')
-    outdir = pathlib.Path(app.builder.outdir)
-    outname = app.builder.config.htmlhelp_basename
-    with open(outdir / (outname + '.hhk'), 'rb') as f:
-        index = f.read()
-    with open(outdir / (outname + '.hhk'), 'wb') as f:
-        f.write(index.replace(b'&#x27;', b'&#39;'))
-
-def setup(app):
-    # `html-page-context` event emitted when the HTML builder has
-    # created a context dictionary to render a template with.
-    app.connect('html-page-context', escape_for_chm)
-    # `build-finished` event emitted when all the files have been
-    # output.
-    app.connect('build-finished', fixup_keywords)
-
-    return {'version': '1.0', 'parallel_read_safe': True}
diff --git a/Doc/tools/extensions/glossary_search.py b/Doc/tools/extensions/glossary_search.py
index 59a6862ea3d3f4..502b6cd95bcb94 100644
--- a/Doc/tools/extensions/glossary_search.py
+++ b/Doc/tools/extensions/glossary_search.py
@@ -1,63 +1,63 @@
-# -*- coding: utf-8 -*-
-"""
-    glossary_search.py
-    ~~~~~~~~~~~~~~~~
+"""Feature search results for glossary items prominently."""
 
-    Feature search results for glossary items prominently.
+from __future__ import annotations
 
-    :license: Python license.
-"""
 import json
-import os.path
-from docutils.nodes import definition_list_item
+from pathlib import Path
+from typing import TYPE_CHECKING
+
+from docutils import nodes
 from sphinx.addnodes import glossary
 from sphinx.util import logging
 
+if TYPE_CHECKING:
+    from sphinx.application import Sphinx
+    from sphinx.util.typing import ExtensionMetadata
 
 logger = logging.getLogger(__name__)
-STATIC_DIR = '_static'
-JSON = 'glossary.json'
 
 
-def process_glossary_nodes(app, doctree, fromdocname):
-    if app.builder.format != 'html':
+def process_glossary_nodes(
+    app: Sphinx,
+    doctree: nodes.document,
+    _docname: str,
+) -> None:
+    if app.builder.format != 'html' or app.builder.embedded:
         return
 
-    terms = {}
+    if hasattr(app.env, 'glossary_terms'):
+        terms = app.env.glossary_terms
+    else:
+        terms = app.env.glossary_terms = {}
 
-    for node in doctree.traverse(glossary):
-        for glossary_item in node.traverse(definition_list_item):
-            term = glossary_item[0].astext().lower()
-            definition = glossary_item[1]
+    for node in doctree.findall(glossary):
+        for glossary_item in node.findall(nodes.definition_list_item):
+            term = glossary_item[0].astext()
+            definition = glossary_item[-1]
 
             rendered = app.builder.render_partial(definition)
-            terms[term] = {
-                'title': glossary_item[0].astext(),
-                'body': rendered['html_body']
+            terms[term.lower()] = {
+                'title': term,
+                'body': rendered['html_body'],
             }
 
-    if hasattr(app.env, 'glossary_terms'):
-        app.env.glossary_terms.update(terms)
-    else:
-        app.env.glossary_terms = terms
 
-def on_build_finish(app, exc):
-    if not hasattr(app.env, 'glossary_terms'):
-        return
-    if not app.env.glossary_terms:
+def write_glossary_json(app: Sphinx, _exc: Exception) -> None:
+    if not getattr(app.env, 'glossary_terms', None):
         return
 
-    logger.info(f'Writing {JSON}', color='green')
-
-    dest_dir = os.path.join(app.outdir, STATIC_DIR)
-    os.makedirs(dest_dir, exist_ok=True)
-
-    with open(os.path.join(dest_dir, JSON), 'w') as f:
-        json.dump(app.env.glossary_terms, f)
+    logger.info('Writing glossary.json', color='green')
+    dest = Path(app.outdir, '_static', 'glossary.json')
+    dest.parent.mkdir(exist_ok=True)
+    dest.write_text(json.dumps(app.env.glossary_terms), encoding='utf-8')
 
 
-def setup(app):
+def setup(app: Sphinx) -> ExtensionMetadata:
     app.connect('doctree-resolved', process_glossary_nodes)
-    app.connect('build-finished', on_build_finish)
+    app.connect('build-finished', write_glossary_json)
 
-    return {'version': '0.1', 'parallel_read_safe': True}
+    return {
+        'version': '1.0',
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }
diff --git a/Doc/tools/extensions/lexers/__init__.py b/Doc/tools/extensions/lexers/__init__.py
new file mode 100644
index 00000000000000..e12ac5be8139cc
--- /dev/null
+++ b/Doc/tools/extensions/lexers/__init__.py
@@ -0,0 +1,15 @@
+from .asdl_lexer import ASDLLexer
+from .peg_lexer import PEGLexer
+
+
+def setup(app):
+    # Used for highlighting Parser/Python.asdl in library/ast.rst
+    app.add_lexer("asdl", ASDLLexer)
+    # Used for highlighting Grammar/python.gram in reference/grammar.rst
+    app.add_lexer("peg", PEGLexer)
+
+    return {
+        "version": "1.0",
+        "parallel_read_safe": True,
+        "parallel_write_safe": True,
+    }
diff --git a/Doc/tools/extensions/asdl_highlight.py b/Doc/tools/extensions/lexers/asdl_lexer.py
similarity index 62%
rename from Doc/tools/extensions/asdl_highlight.py
rename to Doc/tools/extensions/lexers/asdl_lexer.py
index 42863a4b3bcd6a..3a74174a1f7dfb 100644
--- a/Doc/tools/extensions/asdl_highlight.py
+++ b/Doc/tools/extensions/lexers/asdl_lexer.py
@@ -1,15 +1,6 @@
-import sys
-from pathlib import Path
+from pygments.lexer import RegexLexer, bygroups, include
+from pygments.token import Comment, Keyword, Name, Operator, Punctuation, Text
 
-CPYTHON_ROOT = Path(__file__).resolve().parent.parent.parent.parent
-sys.path.append(str(CPYTHON_ROOT / "Parser"))
-
-from pygments.lexer import RegexLexer, bygroups, include, words
-from pygments.token import (Comment, Keyword, Name, Operator,
-                            Punctuation, Text)
-
-from asdl import builtin_types
-from sphinx.highlighting import lexers
 
 class ASDLLexer(RegexLexer):
     name = "ASDL"
@@ -34,7 +25,10 @@ class ASDLLexer(RegexLexer):
                 r"(\w+)(\*\s|\?\s|\s)(\w+)",
                 bygroups(Name.Builtin.Pseudo, Operator, Name),
             ),
-            (words(builtin_types), Name.Builtin),
+            # Keep in line with ``builtin_types`` from Parser/asdl.py.
+            # ASDL's 4 builtin types are
+            # constant, identifier, int, string
+            ("constant|identifier|int|string", Name.Builtin),
             (r"attributes", Name.Builtin),
             (
                 _name + _text_ws + "(=)",
@@ -46,8 +40,3 @@ class ASDLLexer(RegexLexer):
             (r".", Text),
         ],
     }
-
-
-def setup(app):
-    lexers["asdl"] = ASDLLexer()
-    return {'version': '1.0', 'parallel_read_safe': True}
diff --git a/Doc/tools/extensions/peg_highlight.py b/Doc/tools/extensions/lexers/peg_lexer.py
similarity index 94%
rename from Doc/tools/extensions/peg_highlight.py
rename to Doc/tools/extensions/lexers/peg_lexer.py
index 5ab5530d269901..06f9f8eb312125 100644
--- a/Doc/tools/extensions/peg_highlight.py
+++ b/Doc/tools/extensions/lexers/peg_lexer.py
@@ -1,8 +1,6 @@
 from pygments.lexer import RegexLexer, bygroups, include
 from pygments.token import Comment, Keyword, Name, Operator, Punctuation, Text
 
-from sphinx.highlighting import lexers
-
 
 class PEGLexer(RegexLexer):
     """Pygments Lexer for PEG grammar (.gram) files
@@ -81,8 +79,3 @@ class PEGLexer(RegexLexer):
             (r".", Text),
         ],
     }
-
-
-def setup(app):
-    lexers["peg"] = PEGLexer()
-    return {"version": "1.0", "parallel_read_safe": True}
diff --git a/Doc/tools/extensions/patchlevel.py b/Doc/tools/extensions/patchlevel.py
index 617f28c2527ddf..9ccaec3dd5ce0f 100644
--- a/Doc/tools/extensions/patchlevel.py
+++ b/Doc/tools/extensions/patchlevel.py
@@ -1,68 +1,81 @@
-# -*- coding: utf-8 -*-
-"""
-    patchlevel.py
-    ~~~~~~~~~~~~~
+"""Extract version information from Include/patchlevel.h."""
 
-    Extract version info from Include/patchlevel.h.
-    Adapted from Doc/tools/getversioninfo.
+import re
+import sys
+from pathlib import Path
+from typing import Literal, NamedTuple
 
-    :copyright: 2007-2008 by Georg Brandl.
-    :license: Python license.
-"""
+CPYTHON_ROOT = Path(
+    __file__,  # cpython/Doc/tools/extensions/patchlevel.py
+    "..",  # cpython/Doc/tools/extensions
+    "..",  # cpython/Doc/tools
+    "..",  # cpython/Doc
+    "..",  # cpython
+).resolve()
+PATCHLEVEL_H = CPYTHON_ROOT / "Include" / "patchlevel.h"
 
-from __future__ import print_function
+RELEASE_LEVELS = {
+    "PY_RELEASE_LEVEL_ALPHA": "alpha",
+    "PY_RELEASE_LEVEL_BETA": "beta",
+    "PY_RELEASE_LEVEL_GAMMA": "candidate",
+    "PY_RELEASE_LEVEL_FINAL": "final",
+}
 
-import os
-import re
-import sys
 
-def get_header_version_info(srcdir):
-    patchlevel_h = os.path.join(srcdir, '..', 'Include', 'patchlevel.h')
+class version_info(NamedTuple):  # noqa: N801
+    major: int  #: Major release number
+    minor: int  #: Minor release number
+    micro: int  #: Patch release number
+    releaselevel: Literal["alpha", "beta", "candidate", "final"]
+    serial: int  #: Serial release number
 
-    # This won't pick out all #defines, but it will pick up the ones we
-    # care about.
-    rx = re.compile(r'\s*#define\s+([a-zA-Z][a-zA-Z_0-9]*)\s+([a-zA-Z_0-9]+)')
 
-    d = {}
-    with open(patchlevel_h) as f:
-        for line in f:
-            m = rx.match(line)
-            if m is not None:
-                name, value = m.group(1, 2)
-                d[name] = value
+def get_header_version_info() -> version_info:
+    # Capture PY_ prefixed #defines.
+    pat = re.compile(r"\s*#define\s+(PY_\w*)\s+(\w+)", re.ASCII)
 
-    release = version = '%s.%s' % (d['PY_MAJOR_VERSION'], d['PY_MINOR_VERSION'])
-    micro = int(d['PY_MICRO_VERSION'])
-    release += '.' + str(micro)
+    defines = {}
+    patchlevel_h = PATCHLEVEL_H.read_text(encoding="utf-8")
+    for line in patchlevel_h.splitlines():
+        if (m := pat.match(line)) is not None:
+            name, value = m.groups()
+            defines[name] = value
 
-    level = d['PY_RELEASE_LEVEL']
-    suffixes = {
-        'PY_RELEASE_LEVEL_ALPHA': 'a',
-        'PY_RELEASE_LEVEL_BETA':  'b',
-        'PY_RELEASE_LEVEL_GAMMA': 'rc',
-        }
-    if level != 'PY_RELEASE_LEVEL_FINAL':
-        release += suffixes[level] + str(int(d['PY_RELEASE_SERIAL']))
-    return version, release
+    return version_info(
+        major=int(defines["PY_MAJOR_VERSION"]),
+        minor=int(defines["PY_MINOR_VERSION"]),
+        micro=int(defines["PY_MICRO_VERSION"]),
+        releaselevel=RELEASE_LEVELS[defines["PY_RELEASE_LEVEL"]],
+        serial=int(defines["PY_RELEASE_SERIAL"]),
+    )
 
 
-def get_sys_version_info():
-    major, minor, micro, level, serial = sys.version_info
-    release = version = '%s.%s' % (major, minor)
-    release += '.%s' % micro
-    if level != 'final':
-        release += '%s%s' % (level[0], serial)
+def format_version_info(info: version_info) -> tuple[str, str]:
+    version = f"{info.major}.{info.minor}"
+    release = f"{info.major}.{info.minor}.{info.micro}"
+    if info.releaselevel != "final":
+        suffix = {"alpha": "a", "beta": "b", "candidate": "rc"}
+        release += f"{suffix[info.releaselevel]}{info.serial}"
     return version, release
 
 
 def get_version_info():
     try:
-        return get_header_version_info('.')
-    except (IOError, OSError):
-        version, release = get_sys_version_info()
-        print('Can\'t get version info from Include/patchlevel.h, ' \
-              'using version of this interpreter (%s).' % release, file=sys.stderr)
+        info = get_header_version_info()
+        return format_version_info(info)
+    except OSError:
+        version, release = format_version_info(sys.version_info)
+        print(
+            f"Failed to get version info from Include/patchlevel.h, "
+            f"using version of this interpreter ({release}).",
+            file=sys.stderr,
+        )
         return version, release
 
-if __name__ == '__main__':
-    print(get_header_version_info('.')[1])
+
+if __name__ == "__main__":
+    short_ver, full_ver = format_version_info(get_header_version_info())
+    if sys.argv[1:2] == ["--short"]:
+        print(short_ver)
+    else:
+        print(full_ver)
diff --git a/Doc/tools/extensions/pyspecific.py b/Doc/tools/extensions/pyspecific.py
index b35bedcb0901f1..526dc1e593de53 100644
--- a/Doc/tools/extensions/pyspecific.py
+++ b/Doc/tools/extensions/pyspecific.py
@@ -15,16 +15,14 @@
 from time import asctime
 from pprint import pformat
 
-from docutils import nodes, utils
+from docutils import nodes
 from docutils.io import StringOutput
-from docutils.parsers.rst import Directive
-from docutils.utils import new_document
+from docutils.parsers.rst import directives
+from docutils.utils import new_document, unescape
 from sphinx import addnodes
 from sphinx.builders import Builder
-from sphinx.domains.python import PyFunction, PyMethod
-from sphinx.errors import NoUri
+from sphinx.domains.python import PyFunction, PyMethod, PyModule
 from sphinx.locale import _ as sphinx_gettext
-from sphinx.util import logging
 from sphinx.util.docutils import SphinxDirective
 from sphinx.writers.text import TextWriter, TextTranslator
 from sphinx.util.display import status_iterator
@@ -42,17 +40,10 @@
     Body.enum.converters['lowerroman'] = \
     Body.enum.converters['upperroman'] = lambda x: None
 
-# monkey-patch the productionlist directive to allow hyphens in group names
-# https://github.com/sphinx-doc/sphinx/issues/11854
-from sphinx.domains import std
-
-std.token_re = re.compile(r'`((~?[\w-]*:)?\w+)`')
-
-
 # Support for marking up and linking to bugs.python.org issues
 
 def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
-    issue = utils.unescape(text)
+    issue = unescape(text)
     # sanity check: there are no bpo issues within these two values
     if 47261 < int(issue) < 400000:
         msg = inliner.reporter.error(f'The BPO ID {text!r} seems too high -- '
@@ -67,7 +58,7 @@ def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
 # Support for marking up and linking to GitHub issues
 
 def gh_issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
-    issue = utils.unescape(text)
+    issue = unescape(text)
     # sanity check: all GitHub issues have ID >= 32426
     # even though some of them are also valid BPO IDs
     if int(issue) < 32426:
@@ -82,7 +73,7 @@ def gh_issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
 
 # Support for marking up implementation details
 
-class ImplementationDetail(Directive):
+class ImplementationDetail(SphinxDirective):
 
     has_content = True
     final_argument_whitespace = True
@@ -105,243 +96,6 @@ def run(self):
         return [pnode]
 
 
-# Support for documenting platform availability
-
-class Availability(SphinxDirective):
-
-    has_content = True
-    required_arguments = 1
-    optional_arguments = 0
-    final_argument_whitespace = True
-
-    # known platform, libc, and threading implementations
-    known_platforms = frozenset({
-        "AIX", "Android", "BSD", "DragonFlyBSD", "Emscripten", "FreeBSD",
-        "GNU/kFreeBSD", "Linux", "NetBSD", "OpenBSD", "POSIX", "Solaris",
-        "Unix", "VxWorks", "WASI", "Windows", "macOS", "iOS",
-        # libc
-        "BSD libc", "glibc", "musl",
-        # POSIX platforms with pthreads
-        "pthreads",
-    })
-
-    def run(self):
-        availability_ref = ':ref:`Availability <availability>`: '
-        avail_nodes, avail_msgs = self.state.inline_text(
-            availability_ref + self.arguments[0],
-            self.lineno)
-        pnode = nodes.paragraph(availability_ref + self.arguments[0],
-                                '', *avail_nodes, *avail_msgs)
-        self.set_source_info(pnode)
-        cnode = nodes.container("", pnode, classes=["availability"])
-        self.set_source_info(cnode)
-        if self.content:
-            self.state.nested_parse(self.content, self.content_offset, cnode)
-        self.parse_platforms()
-
-        return [cnode]
-
-    def parse_platforms(self):
-        """Parse platform information from arguments
-
-        Arguments is a comma-separated string of platforms. A platform may
-        be prefixed with "not " to indicate that a feature is not available.
-
-        Example::
-
-           .. availability:: Windows, Linux >= 4.2, not WASI
-
-        Arguments like "Linux >= 3.17 with glibc >= 2.27" are currently not
-        parsed into separate tokens.
-        """
-        platforms = {}
-        for arg in self.arguments[0].rstrip(".").split(","):
-            arg = arg.strip()
-            platform, _, version = arg.partition(" >= ")
-            if platform.startswith("not "):
-                version = False
-                platform = platform[4:]
-            elif not version:
-                version = True
-            platforms[platform] = version
-
-        unknown = set(platforms).difference(self.known_platforms)
-        if unknown:
-            cls = type(self)
-            logger = logging.getLogger(cls.__qualname__)
-            logger.warning(
-                f"Unknown platform(s) or syntax '{' '.join(sorted(unknown))}' "
-                f"in '.. availability:: {self.arguments[0]}', see "
-                f"{__file__}:{cls.__qualname__}.known_platforms for a set "
-                "known platforms."
-            )
-
-        return platforms
-
-
-# Support for documenting audit event
-
-def audit_events_purge(app, env, docname):
-    """This is to remove from env.all_audit_events old traces of removed
-    documents.
-    """
-    if not hasattr(env, 'all_audit_events'):
-        return
-    fresh_all_audit_events = {}
-    for name, event in env.all_audit_events.items():
-        event["source"] = [(d, t) for d, t in event["source"] if d != docname]
-        if event["source"]:
-            # Only keep audit_events that have at least one source.
-            fresh_all_audit_events[name] = event
-    env.all_audit_events = fresh_all_audit_events
-
-
-def audit_events_merge(app, env, docnames, other):
-    """In Sphinx parallel builds, this merges env.all_audit_events from
-    subprocesses.
-
-    all_audit_events is a dict of names, with values like:
-    {'source': [(docname, target), ...], 'args': args}
-    """
-    if not hasattr(other, 'all_audit_events'):
-        return
-    if not hasattr(env, 'all_audit_events'):
-        env.all_audit_events = {}
-    for name, value in other.all_audit_events.items():
-        if name in env.all_audit_events:
-            env.all_audit_events[name]["source"].extend(value["source"])
-        else:
-            env.all_audit_events[name] = value
-
-
-class AuditEvent(Directive):
-
-    has_content = True
-    required_arguments = 1
-    optional_arguments = 2
-    final_argument_whitespace = True
-
-    _label = [
-        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with no arguments."),
-        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with argument {args}."),
-        sphinx_gettext("Raises an :ref:`auditing event <auditing>` {name} with arguments {args}."),
-    ]
-
-    @property
-    def logger(self):
-        cls = type(self)
-        return logging.getLogger(cls.__module__ + "." + cls.__name__)
-
-    def run(self):
-        name = self.arguments[0]
-        if len(self.arguments) >= 2 and self.arguments[1]:
-            args = (a.strip() for a in self.arguments[1].strip("'\"").split(","))
-            args = [a for a in args if a]
-        else:
-            args = []
-
-        label = self._label[min(2, len(args))]
-        text = label.format(name="``{}``".format(name),
-                            args=", ".join("``{}``".format(a) for a in args if a))
-
-        env = self.state.document.settings.env
-        if not hasattr(env, 'all_audit_events'):
-            env.all_audit_events = {}
-
-        new_info = {
-            'source': [],
-            'args': args
-        }
-        info = env.all_audit_events.setdefault(name, new_info)
-        if info is not new_info:
-            if not self._do_args_match(info['args'], new_info['args']):
-                self.logger.warning(
-                    "Mismatched arguments for audit-event {}: {!r} != {!r}"
-                    .format(name, info['args'], new_info['args'])
-                )
-
-        ids = []
-        try:
-            target = self.arguments[2].strip("\"'")
-        except (IndexError, TypeError):
-            target = None
-        if not target:
-            target = "audit_event_{}_{}".format(
-                re.sub(r'\W', '_', name),
-                len(info['source']),
-            )
-            ids.append(target)
-
-        info['source'].append((env.docname, target))
-
-        pnode = nodes.paragraph(text, classes=["audit-hook"], ids=ids)
-        pnode.line = self.lineno
-        if self.content:
-            self.state.nested_parse(self.content, self.content_offset, pnode)
-        else:
-            n, m = self.state.inline_text(text, self.lineno)
-            pnode.extend(n + m)
-
-        return [pnode]
-
-    # This list of sets are allowable synonyms for event argument names.
-    # If two names are in the same set, they are treated as equal for the
-    # purposes of warning. This won't help if number of arguments is
-    # different!
-    _SYNONYMS = [
-        {"file", "path", "fd"},
-    ]
-
-    def _do_args_match(self, args1, args2):
-        if args1 == args2:
-            return True
-        if len(args1) != len(args2):
-            return False
-        for a1, a2 in zip(args1, args2):
-            if a1 == a2:
-                continue
-            if any(a1 in s and a2 in s for s in self._SYNONYMS):
-                continue
-            return False
-        return True
-
-
-class audit_event_list(nodes.General, nodes.Element):
-    pass
-
-
-class AuditEventListDirective(Directive):
-
-    def run(self):
-        return [audit_event_list('')]
-
-
-# Support for documenting decorators
-
-class PyDecoratorMixin(object):
-    def handle_signature(self, sig, signode):
-        ret = super(PyDecoratorMixin, self).handle_signature(sig, signode)
-        signode.insert(0, addnodes.desc_addname('@', '@'))
-        return ret
-
-    def needs_arglist(self):
-        return False
-
-
-class PyDecoratorFunction(PyDecoratorMixin, PyFunction):
-    def run(self):
-        # a decorator function is a function after all
-        self.name = 'py:function'
-        return PyFunction.run(self)
-
-
-# TODO: Use sphinx.domains.python.PyDecoratorMethod when possible
-class PyDecoratorMethod(PyDecoratorMixin, PyMethod):
-    def run(self):
-        self.name = 'py:method'
-        return PyMethod.run(self)
-
-
 class PyCoroutineMixin(object):
     def handle_signature(self, sig, signode):
         ret = super(PyCoroutineMixin, self).handle_signature(sig, signode)
@@ -393,62 +147,6 @@ def run(self):
         return PyMethod.run(self)
 
 
-# Support for documenting version of removal in deprecations
-
-class DeprecatedRemoved(Directive):
-    has_content = True
-    required_arguments = 2
-    optional_arguments = 1
-    final_argument_whitespace = True
-    option_spec = {}
-
-    _deprecated_label = sphinx_gettext('Deprecated since version {deprecated}, will be removed in version {removed}')
-    _removed_label = sphinx_gettext('Deprecated since version {deprecated}, removed in version {removed}')
-
-    def run(self):
-        node = addnodes.versionmodified()
-        node.document = self.state.document
-        node['type'] = 'deprecated-removed'
-        version = (self.arguments[0], self.arguments[1])
-        node['version'] = version
-        env = self.state.document.settings.env
-        current_version = tuple(int(e) for e in env.config.version.split('.'))
-        removed_version = tuple(int(e) for e in self.arguments[1].split('.'))
-        if current_version < removed_version:
-            label = self._deprecated_label
-        else:
-            label = self._removed_label
-
-        text = label.format(deprecated=self.arguments[0], removed=self.arguments[1])
-        if len(self.arguments) == 3:
-            inodes, messages = self.state.inline_text(self.arguments[2],
-                                                      self.lineno+1)
-            para = nodes.paragraph(self.arguments[2], '', *inodes, translatable=False)
-            node.append(para)
-        else:
-            messages = []
-        if self.content:
-            self.state.nested_parse(self.content, self.content_offset, node)
-        if len(node):
-            if isinstance(node[0], nodes.paragraph) and node[0].rawsource:
-                content = nodes.inline(node[0].rawsource, translatable=True)
-                content.source = node[0].source
-                content.line = node[0].line
-                content += node[0].children
-                node[0].replace_self(nodes.paragraph('', '', content, translatable=False))
-            node[0].insert(0, nodes.inline('', '%s: ' % text,
-                                           classes=['versionmodified']))
-        else:
-            para = nodes.paragraph('', '',
-                                   nodes.inline('', '%s.' % text,
-                                                classes=['versionmodified']),
-                                   translatable=False)
-            node.append(para)
-        env = self.state.document.settings.env
-        env.get_domain('changeset').note_changeset(node)
-        return [node] + messages
-
-
 # Support for including Misc/NEWS
 
 issue_re = re.compile('(?:[Ii]ssue #|bpo-)([0-9]+)', re.I)
@@ -456,7 +154,7 @@ def run(self):
 whatsnew_re = re.compile(r"(?im)^what's new in (.*?)\??$")
 
 
-class MiscNews(Directive):
+class MiscNews(SphinxDirective):
     has_content = False
     required_arguments = 1
     optional_arguments = 0
@@ -471,7 +169,7 @@ def run(self):
         if not source_dir:
             source_dir = path.dirname(path.abspath(source))
         fpath = path.join(source_dir, fname)
-        self.state.document.settings.record_dependencies.add(fpath)
+        self.env.note_dependency(path.abspath(fpath))
         try:
             with io.open(fpath, encoding='utf-8') as fp:
                 content = fp.read()
@@ -492,8 +190,8 @@ def run(self):
 # Support for building "topic help" for pydoc
 
 pydoc_topic_labels = [
-    'assert', 'assignment', 'async', 'atom-identifiers', 'atom-literals',
-    'attribute-access', 'attribute-references', 'augassign', 'await',
+    'assert', 'assignment', 'assignment-expressions', 'async',  'atom-identifiers',
+    'atom-literals', 'attribute-access', 'attribute-references', 'augassign', 'await',
     'binary', 'bitwise', 'bltin-code-objects', 'bltin-ellipsis-object',
     'bltin-null-object', 'bltin-type-objects', 'booleans',
     'break', 'callable-types', 'calls', 'class', 'comparisons', 'compound',
@@ -603,70 +301,6 @@ def parse_monitoring_event(env, sig, signode):
     return sig
 
 
-def process_audit_events(app, doctree, fromdocname):
-    for node in doctree.traverse(audit_event_list):
-        break
-    else:
-        return
-
-    env = app.builder.env
-
-    table = nodes.table(cols=3)
-    group = nodes.tgroup(
-        '',
-        nodes.colspec(colwidth=30),
-        nodes.colspec(colwidth=55),
-        nodes.colspec(colwidth=15),
-        cols=3,
-    )
-    head = nodes.thead()
-    body = nodes.tbody()
-
-    table += group
-    group += head
-    group += body
-
-    row = nodes.row()
-    row += nodes.entry('', nodes.paragraph('', nodes.Text('Audit event')))
-    row += nodes.entry('', nodes.paragraph('', nodes.Text('Arguments')))
-    row += nodes.entry('', nodes.paragraph('', nodes.Text('References')))
-    head += row
-
-    for name in sorted(getattr(env, "all_audit_events", ())):
-        audit_event = env.all_audit_events[name]
-
-        row = nodes.row()
-        node = nodes.paragraph('', nodes.Text(name))
-        row += nodes.entry('', node)
-
-        node = nodes.paragraph()
-        for i, a in enumerate(audit_event['args']):
-            if i:
-                node += nodes.Text(", ")
-            node += nodes.literal(a, nodes.Text(a))
-        row += nodes.entry('', node)
-
-        node = nodes.paragraph()
-        backlinks = enumerate(sorted(set(audit_event['source'])), start=1)
-        for i, (doc, label) in backlinks:
-            if isinstance(label, str):
-                ref = nodes.reference("", nodes.Text("[{}]".format(i)), internal=True)
-                try:
-                    ref['refuri'] = "{}#{}".format(
-                        app.builder.get_relative_uri(fromdocname, doc),
-                        label,
-                    )
-                except NoUri:
-                    continue
-                node += ref
-        row += nodes.entry('', node)
-
-        body += row
-
-    for node in doctree.traverse(audit_event_list):
-        node.replace_self(table)
-
-
 def patch_pairindextypes(app, _env) -> None:
     """Remove all entries from ``pairindextypes`` before writing POT files.
 
@@ -695,16 +329,10 @@ def setup(app):
     app.add_role('issue', issue_role)
     app.add_role('gh', gh_issue_role)
     app.add_directive('impl-detail', ImplementationDetail)
-    app.add_directive('availability', Availability)
-    app.add_directive('audit-event', AuditEvent)
-    app.add_directive('audit-event-table', AuditEventListDirective)
-    app.add_directive('deprecated-removed', DeprecatedRemoved)
     app.add_builder(PydocTopicsBuilder)
     app.add_object_type('opcode', 'opcode', '%s (opcode)', parse_opcode_signature)
     app.add_object_type('pdbcommand', 'pdbcmd', '%s (pdb command)', parse_pdb_command)
     app.add_object_type('monitoring-event', 'monitoring-event', '%s (monitoring event)', parse_monitoring_event)
-    app.add_directive_to_domain('py', 'decorator', PyDecoratorFunction)
-    app.add_directive_to_domain('py', 'decoratormethod', PyDecoratorMethod)
     app.add_directive_to_domain('py', 'coroutinefunction', PyCoroutineFunction)
     app.add_directive_to_domain('py', 'coroutinemethod', PyCoroutineMethod)
     app.add_directive_to_domain('py', 'awaitablefunction', PyAwaitableFunction)
@@ -712,7 +340,4 @@ def setup(app):
     app.add_directive_to_domain('py', 'abstractmethod', PyAbstractMethod)
     app.add_directive('miscnews', MiscNews)
     app.connect('env-check-consistency', patch_pairindextypes)
-    app.connect('doctree-resolved', process_audit_events)
-    app.connect('env-merge-info', audit_events_merge)
-    app.connect('env-purge-doc', audit_events_purge)
     return {'version': '1.0', 'parallel_read_safe': True}
diff --git a/Doc/tools/static/glossary_search.js b/Doc/tools/static/glossary_search.js
new file mode 100644
index 00000000000000..13d728dc027f1d
--- /dev/null
+++ b/Doc/tools/static/glossary_search.js
@@ -0,0 +1,47 @@
+"use strict";
+
+const GLOSSARY_PAGE = "glossary.html";
+
+const glossary_search = async () => {
+  const response = await fetch("_static/glossary.json");
+  if (!response.ok) {
+    throw new Error("Failed to fetch glossary.json");
+  }
+  const glossary = await response.json();
+
+  const params = new URLSearchParams(document.location.search).get("q");
+  if (!params) {
+    return;
+  }
+
+  const searchParam = params.toLowerCase();
+  const glossaryItem = glossary[searchParam];
+  if (!glossaryItem) {
+    return;
+  }
+
+  // set up the title text with a link to the glossary page
+  const glossaryTitle = document.getElementById("glossary-title");
+  glossaryTitle.textContent = "Glossary: " + glossaryItem.title;
+  const linkTarget = searchParam.replace(/ /g, "-");
+  glossaryTitle.href = GLOSSARY_PAGE + "#term-" + linkTarget;
+
+  // rewrite any anchor links (to other glossary terms)
+  // to have a full reference to the glossary page
+  const glossaryBody = document.getElementById("glossary-body");
+  glossaryBody.innerHTML = glossaryItem.body;
+  const anchorLinks = glossaryBody.querySelectorAll('a[href^="#"]');
+  anchorLinks.forEach(function (link) {
+    const currentUrl = link.getAttribute("href");
+    link.href = GLOSSARY_PAGE + currentUrl;
+  });
+
+  const glossaryResult = document.getElementById("glossary-result");
+  glossaryResult.style.display = "";
+};
+
+if (document.readyState !== "loading") {
+  glossary_search().catch(console.error);
+} else {
+  document.addEventListener("DOMContentLoaded", glossary_search);
+}
diff --git a/Doc/tools/static/rtd_switcher.js b/Doc/tools/static/rtd_switcher.js
new file mode 100644
index 00000000000000..2bf01a002db90c
--- /dev/null
+++ b/Doc/tools/static/rtd_switcher.js
@@ -0,0 +1,55 @@
+ function onSwitch(event) {
+     const option = event.target.selectedIndex;
+     const item = event.target.options[option];
+     window.location.href = item.dataset.url;
+ }
+
+ document.addEventListener("readthedocs-addons-data-ready", function(event) {
+   const config = event.detail.data()
+   const versionSelect = `
+   <select id="version_select" aria-label="Python version">
+   ${ config.versions.active.map(
+       (version) => `
+       <option
+           value="${ version.slug }"
+           ${ config.versions.current.slug === version.slug ? 'selected="selected"' : '' }
+           data-url="${ version.urls.documentation }">
+           ${ version.slug }
+       </option>`
+   ).join("\n") }
+   </select>
+   `;
+
+   // Prepend the current language to the options on the selector
+   let languages = config.projects.translations.concat(config.projects.current);
+   languages = languages.sort((a, b) => a.language.name.localeCompare(b.language.name));
+
+   const languageSelect = `
+   <select id="language_select" aria-label="Language">
+   ${ languages.map(
+       (translation) => `
+       <option
+           value="${ translation.slug }"
+           ${ config.projects.current.slug === translation.slug ? 'selected="selected"' : '' }
+           data-url="${ translation.urls.documentation }">
+           ${ translation.language.name }
+       </option>`
+   ).join("\n") }
+   </select>
+   `;
+
+   // Query all the placeholders because there are different ones for Desktop/Mobile
+   const versionPlaceholders = document.querySelectorAll(".version_switcher_placeholder");
+   for (placeholder of versionPlaceholders) {
+       placeholder.innerHTML = versionSelect;
+       let selectElement = placeholder.querySelector("select");
+       selectElement.addEventListener("change", onSwitch);
+   }
+
+   const languagePlaceholders = document.querySelectorAll(".language_switcher_placeholder");
+   for (placeholder of languagePlaceholders) {
+       placeholder.innerHTML = languageSelect;
+       let selectElement = placeholder.querySelector("select");
+       selectElement.addEventListener("change", onSwitch);
+   }
+ });
diff --git a/Doc/tools/templates/download.html b/Doc/tools/templates/download.html
index b5353d6fb77ab4..45ec436fee72d7 100644
--- a/Doc/tools/templates/download.html
+++ b/Doc/tools/templates/download.html
@@ -1,64 +1,75 @@
 {% extends "layout.html" %}
-{% set title = 'Download' %}
+{% set title = _('Download') %}
 {% if daily is defined %}
-  {% set dlbase = pathto('archives', 1) %}
+  {% set dl_base = pathto('archives', resource=True) %}
+  {% set dl_version = version %}
 {% else %}
   {#
     The link below returns HTTP 404 until the first related alpha release.
     This is expected; use daily documentation builds for CPython development.
   #}
-  {% set dlbase = 'https://docs.python.org/ftp/python/doc/' + release %}
+  {% set dl_base = 'https://www.python.org/ftp/python/doc/' + release %}
+  {% set dl_version = release %}
 {% endif %}
 
 {% block body %}
-<h1>Download Python {{ release }} Documentation</h1>
+<h1>{% trans %}Download Python {{ dl_version }} Documentation{% endtrans %}</h1>
 
-{% if last_updated %}<p><b>Last updated on: {{ last_updated }}.</b></p>{% endif %}
+{% if last_updated %}<p><b>{% trans %}Last updated on: {{ last_updated }}.{% endtrans %}</b></p>{% endif %}
 
-<p>To download an archive containing all the documents for this version of
-Python in one of various formats, follow one of links in this table.</p>
+<p>{% trans %}To download an archive containing all the documents for this version of
+Python in one of various formats, follow one of links in this table.{% endtrans %}</p>
 
 <table class="docutils">
-  <tr><th>Format</th><th>Packed as .zip</th><th>Packed as .tar.bz2</th></tr>
-  <tr><td>PDF (US-Letter paper size)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-pdf-letter.zip">Download</a> (ca. 13 MiB)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-pdf-letter.tar.bz2">Download</a> (ca. 13 MiB)</td>
+  <tr>
+    <th>{% trans %}Format{% endtrans %}</th>
+    <th>{% trans %}Packed as .zip{% endtrans %}</th>
+    <th>{% trans %}Packed as .tar.bz2{% endtrans %}</th>
   </tr>
-  <tr><td>PDF (A4 paper size)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-pdf-a4.zip">Download</a> (ca. 13 MiB)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-pdf-a4.tar.bz2">Download</a> (ca. 13 MiB)</td>
+  <tr>
+    <td>{% trans %}PDF{% endtrans %}</td>
+    <td>{% trans download_size="17" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-pdf-a4.zip">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
+    <td>{% trans download_size="17" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-pdf-a4.tar.bz2">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
   </tr>
-  <tr><td>HTML</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-html.zip">Download</a> (ca. 9 MiB)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-html.tar.bz2">Download</a> (ca. 6 MiB)</td>
+  <tr>
+    <td>{% trans %}HTML{% endtrans %}</td>
+    <td>{% trans download_size="13" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-html.zip">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
+    <td>{% trans download_size="8" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-html.tar.bz2">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
   </tr>
-  <tr><td>Plain Text</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-text.zip">Download</a> (ca. 3 MiB)</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs-text.tar.bz2">Download</a> (ca. 2 MiB)</td>
+  <tr>
+    <td>{% trans %}Plain text{% endtrans %}</td>
+    <td>{% trans download_size="4" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-text.zip">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
+    <td>{% trans download_size="3" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-text.tar.bz2">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
   </tr>
- <tr><td>EPUB</td>
-    <td><a href="{{ dlbase }}/python-{{ release }}-docs.epub">Download</a> (ca. 5 MiB)</td>
+  <tr>
+    <td>{% trans %}Texinfo{% endtrans %}</td>
+    <td>{% trans download_size="9" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-texinfo.zip">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
+    <td>{% trans download_size="7" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs-texinfo.tar.bz2">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
+ </tr>
+ <tr>
+    <td>{% trans %}EPUB{% endtrans %}</td>
+    <td>{% trans download_size="6" %}<a href="{{ dl_base }}/python-{{ dl_version }}-docs.epub">Download</a> (ca. {{ download_size }} MiB){% endtrans %}</td>
     <td></td>
   </tr>
 </table>
 
-<p>These archives contain all the content in the documentation.</p>
+<p>{% trans %}These archives contain all the content in the documentation.{% endtrans %}</p>
 
 
-<h2>Unpacking</h2>
+<h2>{% trans %}Unpacking{% endtrans %}</h2>
 
-<p>Unix users should download the .tar.bz2 archives; these are bzipped tar
+<p>{% trans %}Unix users should download the .tar.bz2 archives; these are bzipped tar
 archives and can be handled in the usual way using tar and the bzip2
 program. The <a href="https://infozip.sourceforge.net">Info-ZIP</a> unzip program can be
 used to handle the ZIP archives if desired. The .tar.bz2 archives provide the
-best compression and fastest download times.</p>
+best compression and fastest download times.{% endtrans %}</p>
 
-<p>Windows users can use the ZIP archives since those are customary on that
-platform. These are created on Unix using the Info-ZIP zip program.</p>
+<p>{% trans %}Windows users can use the ZIP archives since those are customary on that
+platform. These are created on Unix using the Info-ZIP zip program.{% endtrans %}</p>
 
 
-<h2>Problems</h2>
+<h2>{% trans %}Problems{% endtrans %}</h2>
 
-<p>If you have comments or suggestions for the Python documentation, please send
-email to <a href="mailto:docs@python.org">docs@python.org</a>.</p>
+<p>{% trans %}If you have comments or suggestions for the Python documentation, please send
+email to <a href="mailto:docs@python.org">docs@python.org</a>.{% endtrans %}</p>
 {% endblock %}
diff --git a/Doc/tools/templates/indexcontent.html b/Doc/tools/templates/indexcontent.html
index 6f854e86ab8ef1..2686f48dad2a95 100644
--- a/Doc/tools/templates/indexcontent.html
+++ b/Doc/tools/templates/indexcontent.html
@@ -33,6 +33,8 @@ <h1>{{ docstitle|e }}</h1>
          <span class="linkdescr">{% trans %}C API reference{% endtrans %}</span></p>
       <p class="biglink"><a class="biglink" href="{{ pathto("faq/index") }}">{% trans %}FAQs{% endtrans %}</a><br/>
          <span class="linkdescr">{% trans %}Frequently asked questions (with answers!){% endtrans %}</span></p>
+      <p class="biglink"><a class="biglink" href="{{ pathto("deprecations/index") }}">{% trans %}Deprecations{% endtrans %}</a><br/>
+         <span class="linkdescr">{% trans %}Deprecated functionality{% endtrans %}</span></p>
     </td></tr>
   </table>
 
@@ -57,7 +59,7 @@ <h1>{{ docstitle|e }}</h1>
   <table class="contentstable" align="center"><tr>
     <td width="50%">
       <p class="biglink"><a class="biglink" href="{{ pathto("bugs") }}">{% trans %}Reporting issues{% endtrans %}</a></p>
-      <p class="biglink"><a class="biglink" href="https://devguide.python.org/docquality/#helping-with-documentation">{% trans %}Contributing to Docs{% endtrans %}</a></p>
+      <p class="biglink"><a class="biglink" href="https://devguide.python.org/documentation/help-documenting/">{% trans %}Contributing to Docs{% endtrans %}</a></p>
       <p class="biglink"><a class="biglink" href="{{ pathto("download") }}">{% trans %}Download the documentation{% endtrans %}</a></p>
     </td><td width="50%">
       <p class="biglink"><a class="biglink" href="{{ pathto("license") }}">{% trans %}History and license of Python{% endtrans %}</a></p>
diff --git a/Doc/tools/templates/layout.html b/Doc/tools/templates/layout.html
index 3c12b01b558f83..b09fd21a8ddcc9 100644
--- a/Doc/tools/templates/layout.html
+++ b/Doc/tools/templates/layout.html
@@ -26,6 +26,9 @@
 {% endblock %}
 
 {% block extrahead %}
+    {% if builder == "html" and enable_analytics %}
+      <script defer data-domain="docs.python.org" src="https://plausible.io/js/script.js"></script>
+    {% endif %}
     <link rel="canonical" href="https://docs.python.org/3/{{pagename}}.html" />
     {% if builder != "htmlhelp" %}
       {% if pagename == 'whatsnew/changelog' and not embedded %}
@@ -42,89 +45,8 @@
     </style>
 {{ super() }}
 
-<meta name="readthedocs-addons-api-version" content="1">
-<script type="text/javascript">
- function onSwitch(event) {
-     const option = event.target.selectedIndex;
-     const item = event.target.options[option];
-     window.location.href = item.dataset.url;
- }
-
- document.addEventListener("readthedocs-addons-data-ready", function(event) {
-   const config = event.detail.data()
-
-   // Add some mocked hardcoded versions pointing to the official
-   // documentation while migrating to Read the Docs.
-   // These are only for testing purposes.
-   // TODO: remove them when managing all the versions on Read the Docs,
-   // since all the "active, built and not hidden" versions will be shown automatically.
-   let versions = config.versions.active.concat([
-       {
-           slug: "dev (3.13)",
-           urls: {
-               documentation: "https://docs.python.org/3.13/",
-           }
-       },
-       {
-           slug: "3.12",
-           urls: {
-               documentation: "https://docs.python.org/3.12/",
-           }
-       },
-       {
-           slug: "3.11",
-           urls: {
-               documentation: "https://docs.python.org/3.11/",
-           }
-       },
-   ]);
-
-   const versionSelect = `
-   <select id="version_select">
-   ${ versions.map(
-       (version) => `
-       <option
-           value="${ version.slug }"
-           ${ config.versions.current.slug === version.slug ? 'selected="selected"' : '' }
-           data-url="${ version.urls.documentation }">
-           ${ version.slug }
-       </option>`
-   ).join("\n") }
-   </select>
-   `;
-
-   // Prepend the current language to the options on the selector
-   let languages = config.projects.translations.concat(config.projects.current);
-   languages = languages.sort((a, b) => a.language.name.localeCompare(b.language.name));
-
-   const languageSelect = `
-   <select id="language_select">
-   ${ languages.map(
-       (translation) => `
-       <option
-           value="${ translation.slug }"
-           ${ config.projects.current.slug === translation.slug ? 'selected="selected"' : '' }
-           data-url="${ translation.urls.documentation }">
-           ${ translation.language.name }
-       </option>`
-   ).join("\n") }
-   </select>
-   `;
-
-   // Query all the placeholders because there are different ones for Desktop/Mobile
-   const versionPlaceholders = document.querySelectorAll(".version_switcher_placeholder");
-   for (placeholder of versionPlaceholders) {
-       placeholder.innerHTML = versionSelect;
-       let selectElement = placeholder.querySelector("select");
-       selectElement.addEventListener("change", onSwitch);
-   }
-
-   const languagePlaceholders = document.querySelectorAll(".language_switcher_placeholder");
-   for (placeholder of languagePlaceholders) {
-       placeholder.innerHTML = languageSelect;
-       let selectElement = placeholder.querySelector("select");
-       selectElement.addEventListener("change", onSwitch);
-   }
- });
-</script>
+{%- if not embedded %}
+            <script type="text/javascript" src="{{ pathto('_static/rtd_switcher.js', 1) }}"></script>
+            <meta name="readthedocs-addons-api-version" content="1">
+{%- endif %}
 {% endblock %}
diff --git a/Doc/tools/templates/search.html b/Doc/tools/templates/search.html
index 852974461380f2..6ddac5f828bab1 100644
--- a/Doc/tools/templates/search.html
+++ b/Doc/tools/templates/search.html
@@ -2,61 +2,16 @@
 {% block extrahead %}
     {{ super() }}
     <meta name="robots" content="noindex">
-    <script type="text/javascript">
-        const GLOSSARY_PAGE = 'glossary.html';
-
-        document.addEventListener('DOMContentLoaded', function() {
-          fetch('_static/glossary.json')
-            .then(function(response) {
-              if (response.ok) {
-                return response.json();
-              } else {
-                throw new Error('Failed to fetch glossary.json');
-              }
-            })
-            .then(function(glossary) {
-              const RESULT_TEMPLATE = '<div style="display: none" class="admonition seealso" id="glossary-result">' +
-                                      '  <p class="topic-title">' +
-                                      '    <a class="glossary-title" href="#"></a>' +
-                                      '  </p>' +
-                                      '  <div class="glossary-body"></div>' +
-                                      '</div>';
-              let searchResults = document.getElementById('search-results');
-              searchResults.insertAdjacentHTML('afterbegin', RESULT_TEMPLATE);
-
-              const params = new URLSearchParams(document.location.search).get("q");
-              if (params) {
-                const searchParam = params.toLowerCase();
-                const glossaryItem = glossary[searchParam];
-                if (glossaryItem) {
-                  let resultDiv = document.getElementById('glossary-result');
-
-                  // set up the title text with a link to the glossary page
-                  let glossaryTitle = resultDiv.querySelector('.glossary-title');
-                  glossaryTitle.textContent = 'Glossary: ' + glossaryItem.title;
-                  const linkTarget = searchParam.replace(/ /g, '-');
-                  glossaryTitle.href = GLOSSARY_PAGE + '#term-' + linkTarget;
-
-                  // rewrite any anchor links (to other glossary terms)
-                  // to have a full reference to the glossary page
-                  let body = document.createElement('div');
-                  body.innerHTML = glossaryItem.body;
-                  const anchorLinks = body.querySelectorAll('a[href^="#"]');
-                  anchorLinks.forEach(function(link) {
-                    const currentUrl = link.getAttribute('href');
-                    link.href = GLOSSARY_PAGE + currentUrl;
-                  });
-                  resultDiv.querySelector('.glossary-body').appendChild(body);
-
-                  resultDiv.style.display = '';
-                } else {
-                  document.getElementById('glossary-result').style.display = 'none';
-                }
-              }
-            })
-            .catch(function(error) {
-              console.error(error);
-            });
-        });
-    </script>
+    <script type="text/javascript" src="{{ pathto('_static/glossary_search.js', resource=True) }}"></script>
+{% endblock %}
+{% block searchresults %}
+<div id="search-results">
+  {# For glossary_search.js #}
+  <div style="display: none;" class="admonition seealso" id="glossary-result">
+    <p class="topic-title">
+    <a id="glossary-title" href="#"></a>
+    </p>
+  <div id="glossary-body"></div>
+</div>
+</div>
 {% endblock %}
diff --git a/Doc/tutorial/appendix.rst b/Doc/tutorial/appendix.rst
index b8faf756698097..6a1611afadb57c 100644
--- a/Doc/tutorial/appendix.rst
+++ b/Doc/tutorial/appendix.rst
@@ -14,13 +14,13 @@ There are two variants of the interactive :term:`REPL`.  The classic
 basic interpreter is supported on all platforms with minimal line
 control capabilities.
 
-On Unix-like systems (e.g. Linux or macOS) with :mod:`curses` and
-:mod:`readline` support, a new interactive shell is used by default.
+On Windows, or Unix-like systems with :mod:`curses` support,
+a new interactive shell is used by default.
 This one supports color, multiline editing, history browsing, and
 paste mode.  To disable color, see :ref:`using-on-controlling-color` for
 details.  Function keys provide some additional functionality.
 :kbd:`F1` enters the interactive help browser :mod:`pydoc`.
-:kbd:`F2` allows for browsing command-line history without output nor the
+:kbd:`F2` allows for browsing command-line history with neither output nor the
 :term:`>>>` and :term:`...` prompts. :kbd:`F3` enters "paste mode", which
 makes pasting larger blocks of code easier. Press :kbd:`F3` to return to
 the regular prompt.
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 7ab528acb370f2..492568961d8a51 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -276,8 +276,8 @@ definition looked like this::
 then ``MyClass.i`` and ``MyClass.f`` are valid attribute references, returning
 an integer and a function object, respectively. Class attributes can also be
 assigned to, so you can change the value of ``MyClass.i`` by assignment.
-:attr:`!__doc__` is also a valid attribute, returning the docstring belonging to
-the class: ``"A simple example class"``.
+:attr:`~type.__doc__` is also a valid attribute, returning the docstring
+belonging to the class: ``"A simple example class"``.
 
 Class *instantiation* uses function notation.  Just pretend that the class
 object is a parameterless function that returns a new instance of the class.
@@ -338,11 +338,7 @@ code will print the value ``16``, without leaving a trace::
    del x.counter
 
 The other kind of instance attribute reference is a *method*. A method is a
-function that "belongs to" an object.  (In Python, the term method is not unique
-to class instances: other object types can have methods as well.  For example,
-list objects have methods called append, insert, remove, sort, and so on.
-However, in the following discussion, we'll use the term method exclusively to
-mean methods of class instance objects, unless explicitly stated otherwise.)
+function that "belongs to" an object.
 
 .. index:: pair: object; method
 
@@ -692,6 +688,11 @@ current class name with leading underscore(s) stripped.  This mangling is done
 without regard to the syntactic position of the identifier, as long as it
 occurs within the definition of a class.
 
+.. seealso::
+
+   The :ref:`private name mangling specifications <private-name-mangling>`
+   for details and special cases.
+
 Name mangling is helpful for letting subclasses override methods without
 breaking intraclass method calls.  For example::
 
@@ -931,6 +932,6 @@ Examples::
 
 .. [#] Except for one thing.  Module objects have a secret read-only attribute called
    :attr:`~object.__dict__` which returns the dictionary used to implement the module's
-   namespace; the name :attr:`~object.__dict__` is an attribute but not a global name.
+   namespace; the name ``__dict__`` is an attribute but not a global name.
    Obviously, using this violates the abstraction of namespace implementation, and
    should be restricted to things like post-mortem debuggers.
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 77444f9cb8358d..8261bbdbfb7a01 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -61,7 +61,7 @@ they appear in the sequence.  For example (no pun intended):
 ::
 
    >>> # Measure some strings:
-   ... words = ['cat', 'window', 'defenestrate']
+   >>> words = ['cat', 'window', 'defenestrate']
    >>> for w in words:
    ...     print(w, len(w))
    ...
@@ -160,21 +160,60 @@ arguments.  In chapter :ref:`tut-structures`, we will discuss in more detail abo
 
 .. _tut-break:
 
-:keyword:`!break` and :keyword:`!continue` Statements, and :keyword:`!else` Clauses on Loops
-============================================================================================
+:keyword:`!break` and :keyword:`!continue` Statements
+=====================================================
 
 The :keyword:`break` statement breaks out of the innermost enclosing
-:keyword:`for` or :keyword:`while` loop.
+:keyword:`for` or :keyword:`while` loop::
 
-A :keyword:`!for` or :keyword:`!while` loop can include an :keyword:`!else` clause.
+    >>> for n in range(2, 10):
+    ...     for x in range(2, n):
+    ...         if n % x == 0:
+    ...             print(f"{n} equals {x} * {n//x}")
+    ...             break
+    ...
+    4 equals 2 * 2
+    6 equals 2 * 3
+    8 equals 2 * 4
+    9 equals 3 * 3
+
+The :keyword:`continue` statement continues with the next
+iteration of the loop::
+
+    >>> for num in range(2, 10):
+    ...     if num % 2 == 0:
+    ...         print(f"Found an even number {num}")
+    ...         continue
+    ...     print(f"Found an odd number {num}")
+    ...
+    Found an even number 2
+    Found an odd number 3
+    Found an even number 4
+    Found an odd number 5
+    Found an even number 6
+    Found an odd number 7
+    Found an even number 8
+    Found an odd number 9
+
+.. _tut-for-else:
+.. _break-and-continue-statements-and-else-clauses-on-loops:
+
+:keyword:`!else` Clauses on Loops
+=================================
+
+In a :keyword:`!for` or :keyword:`!while` loop the :keyword:`!break` statement
+may be paired with an :keyword:`!else` clause.  If the loop finishes without
+executing the :keyword:`!break`, the :keyword:`!else` clause executes.
 
 In a :keyword:`for` loop, the :keyword:`!else` clause is executed
-after the loop reaches its final iteration.
+after the loop finishes its final iteration, that is, if no break occurred.
 
 In a :keyword:`while` loop, it's executed after the loop's condition becomes false.
 
-In either kind of loop, the :keyword:`!else` clause is **not** executed
-if the loop was terminated by a :keyword:`break`.
+In either kind of loop, the :keyword:`!else` clause is **not** executed if the
+loop was terminated by a :keyword:`break`.  Of course, other ways of ending the
+loop early, such as a :keyword:`return` or a raised exception, will also skip
+execution of the :keyword:`else` clause.
 
 This is exemplified in the following :keyword:`!for` loop,
 which searches for prime numbers::
@@ -198,32 +237,19 @@ which searches for prime numbers::
    9 equals 3 * 3
 
 (Yes, this is the correct code.  Look closely: the ``else`` clause belongs to
-the :keyword:`for` loop, **not** the :keyword:`if` statement.)
+the ``for`` loop, **not** the ``if`` statement.)
 
-When used with a loop, the ``else`` clause has more in common with the
-``else`` clause of a :keyword:`try` statement than it does with that of
-:keyword:`if` statements: a :keyword:`try` statement's ``else`` clause runs
-when no exception occurs, and a loop's ``else`` clause runs when no ``break``
-occurs. For more on the :keyword:`!try` statement and exceptions, see
-:ref:`tut-handling`.
-
-The :keyword:`continue` statement, also borrowed from C, continues with the next
-iteration of the loop::
+One way to think of the else clause is to imagine it paired with the ``if``
+inside the loop.  As the loop executes, it will run a sequence like
+if/if/if/else. The ``if`` is inside the loop, encountered a number of times. If
+the condition is ever true, a ``break`` will happen. If the condition is never
+true, the ``else`` clause outside the loop will execute.
 
-    >>> for num in range(2, 10):
-    ...     if num % 2 == 0:
-    ...         print("Found an even number", num)
-    ...         continue
-    ...     print("Found an odd number", num)
-    ...
-    Found an even number 2
-    Found an odd number 3
-    Found an even number 4
-    Found an odd number 5
-    Found an even number 6
-    Found an odd number 7
-    Found an even number 8
-    Found an odd number 9
+When used with a loop, the ``else`` clause has more in common with the ``else``
+clause of a :keyword:`try` statement than it does with that of ``if``
+statements: a ``try`` statement's ``else`` clause runs when no exception
+occurs, and a loop's ``else`` clause runs when no ``break`` occurs. For more on
+the ``try`` statement and exceptions, see :ref:`tut-handling`.
 
 .. _tut-pass:
 
@@ -436,8 +462,8 @@ Defining Functions
 We can create a function that writes the Fibonacci series to an arbitrary
 boundary::
 
-   >>> def fib(n):    # write Fibonacci series up to n
-   ...     """Print a Fibonacci series up to n."""
+   >>> def fib(n):    # write Fibonacci series less than n
+   ...     """Print a Fibonacci series less than n."""
    ...     a, b = 0, 1
    ...     while a < n:
    ...         print(a, end=' ')
@@ -445,7 +471,7 @@ boundary::
    ...     print()
    ...
    >>> # Now call the function we just defined:
-   ... fib(2000)
+   >>> fib(2000)
    0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597
 
 .. index::
@@ -807,7 +833,7 @@ parameters as there is a ``/`` in the function definition::
      File "<stdin>", line 1, in <module>
    TypeError: pos_only_arg() got some positional-only arguments passed as keyword arguments: 'arg'
 
-The third function ``kwd_only_args`` only allows keyword arguments as indicated
+The third function ``kwd_only_arg`` only allows keyword arguments as indicated
 by a ``*`` in the function definition::
 
    >>> kwd_only_arg(3)
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index de2827461e2f24..cbe780e075baf5 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -19,13 +19,13 @@ objects:
 .. method:: list.append(x)
    :noindex:
 
-   Add an item to the end of the list.  Equivalent to ``a[len(a):] = [x]``.
+   Add an item to the end of the list.  Similar to ``a[len(a):] = [x]``.
 
 
 .. method:: list.extend(iterable)
    :noindex:
 
-   Extend the list by appending all the items from the iterable.  Equivalent to
+   Extend the list by appending all the items from the iterable.  Similar to
    ``a[len(a):] = iterable``.
 
 
@@ -56,7 +56,7 @@ objects:
 .. method:: list.clear()
    :noindex:
 
-   Remove all items from the list.  Equivalent to ``del a[:]``.
+   Remove all items from the list.  Similar to ``del a[:]``.
 
 
 .. method:: list.index(x[, start[, end]])
@@ -93,7 +93,7 @@ objects:
 .. method:: list.copy()
    :noindex:
 
-   Return a shallow copy of the list.  Equivalent to ``a[:]``.
+   Return a shallow copy of the list.  Similar to ``a[:]``.
 
 
 An example that uses most of the list methods::
@@ -126,7 +126,7 @@ Python.
 
 Another thing you might notice is that not all data can be sorted or
 compared.  For instance, ``[None, 'hello', 10]`` doesn't sort because
-integers can't be compared to strings and *None* can't be compared to
+integers can't be compared to strings and ``None`` can't be compared to
 other types.  Also, there are some types that don't have a defined
 ordering relation.  For example, ``3+4j < 5+7j`` isn't a valid
 comparison.
@@ -142,8 +142,8 @@ Using Lists as Stacks
 
 The list methods make it very easy to use a list as a stack, where the last
 element added is the first element retrieved ("last-in, first-out").  To add an
-item to the top of the stack, use :meth:`~list.append`.  To retrieve an item from the
-top of the stack, use :meth:`~list.pop` without an explicit index.  For example::
+item to the top of the stack, use :meth:`!append`.  To retrieve an item from the
+top of the stack, use :meth:`!pop` without an explicit index.  For example::
 
    >>> stack = [3, 4, 5]
    >>> stack.append(6)
@@ -340,7 +340,7 @@ The :keyword:`!del` statement
 =============================
 
 There is a way to remove an item from a list given its index instead of its
-value: the :keyword:`del` statement.  This differs from the :meth:`~list.pop` method
+value: the :keyword:`del` statement.  This differs from the :meth:`!pop` method
 which returns a value.  The :keyword:`!del` statement can also be used to remove
 slices from a list or clear the entire list (which we did earlier by assignment
 of an empty list to the slice).  For example::
@@ -383,16 +383,16 @@ A tuple consists of a number of values separated by commas, for instance::
    >>> t
    (12345, 54321, 'hello!')
    >>> # Tuples may be nested:
-   ... u = t, (1, 2, 3, 4, 5)
+   >>> u = t, (1, 2, 3, 4, 5)
    >>> u
    ((12345, 54321, 'hello!'), (1, 2, 3, 4, 5))
    >>> # Tuples are immutable:
-   ... t[0] = 88888
+   >>> t[0] = 88888
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: 'tuple' object does not support item assignment
    >>> # but they can contain mutable objects:
-   ... v = ([1, 2, 3], [3, 2, 1])
+   >>> v = ([1, 2, 3], [3, 2, 1])
    >>> v
    ([1, 2, 3], [3, 2, 1])
 
@@ -465,7 +465,7 @@ Here is a brief demonstration::
    False
 
    >>> # Demonstrate set operations on unique letters from two words
-   ...
+   >>>
    >>> a = set('abracadabra')
    >>> b = set('alacazam')
    >>> a                                  # unique letters in a
@@ -500,8 +500,8 @@ any immutable type; strings and numbers can always be keys.  Tuples can be used
 as keys if they contain only strings, numbers, or tuples; if a tuple contains
 any mutable object either directly or indirectly, it cannot be used as a key.
 You can't use lists as keys, since lists can be modified in place using index
-assignments, slice assignments, or methods like :meth:`~list.append` and
-:meth:`~list.extend`.
+assignments, slice assignments, or methods like :meth:`!append` and
+:meth:`!extend`.
 
 It is best to think of a dictionary as a set of *key: value* pairs,
 with the requirement that the keys are unique (within one dictionary). A pair of
diff --git a/Doc/tutorial/errors.rst b/Doc/tutorial/errors.rst
index 981b14f5a4212b..c01cb8c14a0360 100644
--- a/Doc/tutorial/errors.rst
+++ b/Doc/tutorial/errors.rst
@@ -23,7 +23,7 @@ complaint you get while you are still learning Python::
                   ^^^^^
    SyntaxError: invalid syntax
 
-The parser repeats the offending line and displays little 'arrow's pointing
+The parser repeats the offending line and displays little arrows pointing
 at the token in the line where the error was detected.  The error may be
 caused by the absence of a token *before* the indicated token.  In the
 example, the error is detected at the function :func:`print`, since a colon
@@ -45,14 +45,20 @@ programs, however, and result in error messages as shown here::
    >>> 10 * (1/0)
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
+       10 * (1/0)
+             ~^~
    ZeroDivisionError: division by zero
    >>> 4 + spam*3
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
+       4 + spam*3
+           ^^^^
    NameError: name 'spam' is not defined
    >>> '2' + 2
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
+       '2' + 2
+       ~~~~^~~
    TypeError: can only concatenate str (not "int") to str
 
 The last line of the error message indicates what happened. Exceptions come in
@@ -252,6 +258,7 @@ exception to occur. For example::
    >>> raise NameError('HiThere')
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
+       raise NameError('HiThere')
    NameError: HiThere
 
 The sole argument to :keyword:`raise` indicates the exception to be raised.
@@ -275,6 +282,7 @@ re-raise the exception::
    An exception flew by!
    Traceback (most recent call last):
      File "<stdin>", line 2, in <module>
+       raise NameError('HiThere')
    NameError: HiThere
 
 
@@ -294,12 +302,15 @@ message::
     ...
     Traceback (most recent call last):
       File "<stdin>", line 2, in <module>
+        open("database.sqlite")
+        ~~~~^^^^^^^^^^^^^^^^^^^
     FileNotFoundError: [Errno 2] No such file or directory: 'database.sqlite'
     <BLANKLINE>
     During handling of the above exception, another exception occurred:
     <BLANKLINE>
     Traceback (most recent call last):
       File "<stdin>", line 4, in <module>
+        raise RuntimeError("unable to handle error")
     RuntimeError: unable to handle error
 
 To indicate that an exception is a direct consequence of another, the
@@ -320,6 +331,8 @@ This can be useful when you are transforming exceptions. For example::
     ...
     Traceback (most recent call last):
       File "<stdin>", line 2, in <module>
+        func()
+        ~~~~^^
       File "<stdin>", line 2, in func
     ConnectionError
     <BLANKLINE>
@@ -327,6 +340,7 @@ This can be useful when you are transforming exceptions. For example::
     <BLANKLINE>
     Traceback (most recent call last):
       File "<stdin>", line 4, in <module>
+        raise RuntimeError('Failed to open database') from exc
     RuntimeError: Failed to open database
 
 It also allows disabling automatic exception chaining using the ``from None``
@@ -339,6 +353,7 @@ idiom::
     ...
     Traceback (most recent call last):
       File "<stdin>", line 4, in <module>
+        raise RuntimeError from None
     RuntimeError
 
 For more information about chaining mechanics, see :ref:`bltin-exceptions`.
@@ -381,6 +396,7 @@ example::
    Goodbye, world!
    Traceback (most recent call last):
      File "<stdin>", line 2, in <module>
+       raise KeyboardInterrupt
    KeyboardInterrupt
 
 If a :keyword:`finally` clause is present, the :keyword:`!finally`
@@ -448,7 +464,11 @@ A more complicated example::
    executing finally clause
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
+       divide("2", "1")
+       ~~~~~~^^^^^^^^^^
      File "<stdin>", line 3, in divide
+       result = x / y
+                ~~^~~
    TypeError: unsupported operand type(s) for /: 'str' and 'str'
 
 As you can see, the :keyword:`finally` clause is executed in any event.  The
@@ -511,8 +531,11 @@ caught like any other exception. ::
    >>> f()
      + Exception Group Traceback (most recent call last):
      |   File "<stdin>", line 1, in <module>
+     |     f()
+     |     ~^^
      |   File "<stdin>", line 3, in f
-     | ExceptionGroup: there were problems
+     |     raise ExceptionGroup('there were problems', excs)
+     | ExceptionGroup: there were problems (2 sub-exceptions)
      +-+---------------- 1 ----------------
        | OSError: error 1
        +---------------- 2 ----------------
@@ -560,10 +583,15 @@ other clauses and eventually to be reraised. ::
    There were SystemErrors
      + Exception Group Traceback (most recent call last):
      |   File "<stdin>", line 2, in <module>
+     |     f()
+     |     ~^^
      |   File "<stdin>", line 2, in f
-     | ExceptionGroup: group1
+     |     raise ExceptionGroup(
+     |     ...<12 lines>...
+     |     )
+     | ExceptionGroup: group1 (1 sub-exception)
      +-+---------------- 1 ----------------
-       | ExceptionGroup: group2
+       | ExceptionGroup: group2 (1 sub-exception)
        +-+---------------- 1 ----------------
          | RecursionError: 4
          +------------------------------------
@@ -607,6 +635,7 @@ includes all notes, in the order they were added, after the exception. ::
    ...
    Traceback (most recent call last):
      File "<stdin>", line 2, in <module>
+       raise TypeError('bad type')
    TypeError: bad type
    Add some information
    Add some more information
@@ -630,23 +659,33 @@ exception in the group has a note indicating when this error has occurred. ::
    >>> raise ExceptionGroup('We have some problems', excs)
      + Exception Group Traceback (most recent call last):
      |   File "<stdin>", line 1, in <module>
+     |     raise ExceptionGroup('We have some problems', excs)
      | ExceptionGroup: We have some problems (3 sub-exceptions)
      +-+---------------- 1 ----------------
        | Traceback (most recent call last):
        |   File "<stdin>", line 3, in <module>
+       |     f()
+       |     ~^^
        |   File "<stdin>", line 2, in f
+       |     raise OSError('operation failed')
        | OSError: operation failed
        | Happened in Iteration 1
        +---------------- 2 ----------------
        | Traceback (most recent call last):
        |   File "<stdin>", line 3, in <module>
+       |     f()
+       |     ~^^
        |   File "<stdin>", line 2, in f
+       |     raise OSError('operation failed')
        | OSError: operation failed
        | Happened in Iteration 2
        +---------------- 3 ----------------
        | Traceback (most recent call last):
        |   File "<stdin>", line 3, in <module>
+       |     f()
+       |     ~^^
        |   File "<stdin>", line 2, in f
+       |     raise OSError('operation failed')
        | OSError: operation failed
        | Happened in Iteration 3
        +------------------------------------
diff --git a/Doc/tutorial/floatingpoint.rst b/Doc/tutorial/floatingpoint.rst
index 0795e2fef98830..dfe2d1d3a8378f 100644
--- a/Doc/tutorial/floatingpoint.rst
+++ b/Doc/tutorial/floatingpoint.rst
@@ -6,7 +6,7 @@
 .. _tut-fp-issues:
 
 **************************************************
-Floating Point Arithmetic:  Issues and Limitations
+Floating-Point Arithmetic:  Issues and Limitations
 **************************************************
 
 .. sectionauthor:: Tim Peters <tim_one@users.sourceforge.net>
@@ -88,7 +88,7 @@ the one with 17 significant digits, ``0.10000000000000001``.   Starting with
 Python 3.1, Python (on most systems) is now able to choose the shortest of
 these and simply display ``0.1``.
 
-Note that this is in the very nature of binary floating-point: this is not a bug
+Note that this is in the very nature of binary floating point: this is not a bug
 in Python, and it is not a bug in your code either.  You'll see the same kind of
 thing in all languages that support your hardware's floating-point arithmetic
 (although some languages may not *display* the difference by default, or in all
@@ -148,13 +148,13 @@ Binary floating-point arithmetic holds many surprises like this.  The problem
 with "0.1" is explained in precise detail below, in the "Representation Error"
 section.  See `Examples of Floating Point Problems
 <https://jvns.ca/blog/2023/01/13/examples-of-floating-point-problems/>`_ for
-a pleasant summary of how binary floating-point works and the kinds of
+a pleasant summary of how binary floating point works and the kinds of
 problems commonly encountered in practice.  Also see
 `The Perils of Floating Point <http://www.indowsway.com/floatingpoint.htm>`_
 for a more complete account of other common surprises.
 
 As that says near the end, "there are no easy answers."  Still, don't be unduly
-wary of floating-point!  The errors in Python float operations are inherited
+wary of floating point!  The errors in Python float operations are inherited
 from the floating-point hardware, and on most machines are on the order of no
 more than 1 part in 2\*\*53 per operation.  That's more than adequate for most
 tasks, but you do need to keep in mind that it's not decimal arithmetic and
@@ -230,7 +230,7 @@ accumulate to the point where they affect the final total:
    >>> sum([0.1] * 10) == 1.0
    True
 
-The :func:`math.fsum()` goes further and tracks all of the "lost digits"
+The :func:`math.fsum` goes further and tracks all of the "lost digits"
 as values are added onto a running total so that the result has only a
 single rounding.  This is slower than :func:`sum` but will be more
 accurate in uncommon cases where large magnitude inputs mostly cancel
diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst
index fe9ca9ccb9c7e0..35b8c7cd8eb049 100644
--- a/Doc/tutorial/inputoutput.rst
+++ b/Doc/tutorial/inputoutput.rst
@@ -37,16 +37,23 @@ printing space-separated values. There are several ways to format output.
 * The :meth:`str.format` method of strings requires more manual
   effort.  You'll still use ``{`` and ``}`` to mark where a variable
   will be substituted and can provide detailed formatting directives,
-  but you'll also need to provide the information to be formatted.
+  but you'll also need to provide the information to be formatted. In the following code
+  block there are two examples of how to format variables:
+
 
   ::
 
      >>> yes_votes = 42_572_654
-     >>> no_votes = 43_132_495
-     >>> percentage = yes_votes / (yes_votes + no_votes)
+     >>> total_votes = 85_705_149
+     >>> percentage = yes_votes / total_votes
      >>> '{:-9} YES votes  {:2.2%}'.format(yes_votes, percentage)
      ' 42572654 YES votes  49.67%'
 
+  Notice how the ``yes_votes`` are padded with spaces and a negative sign only for negative numbers.
+  The example also prints ``percentage`` multiplied by 100, with 2 decimal
+  places and followed by a percent sign (see :ref:`formatspec` for details).
+
+
 * Finally, you can do all the string handling yourself by using string slicing and
   concatenation operations to create any layout you can imagine.  The
   string type has some methods that perform useful operations for padding
@@ -80,12 +87,12 @@ Some examples::
    >>> print(s)
    The value of x is 32.5, and y is 40000...
    >>> # The repr() of a string adds string quotes and backslashes:
-   ... hello = 'hello, world\n'
+   >>> hello = 'hello, world\n'
    >>> hellos = repr(hello)
    >>> print(hellos)
    'hello, world\n'
    >>> # The argument to repr() may be any Python object:
-   ... repr((x, y, ('spam', 'eggs')))
+   >>> repr((x, y, ('spam', 'eggs')))
    "(32.5, 40000, ('spam', 'eggs'))"
 
 The :mod:`string` module contains a :class:`~string.Template` class that offers
@@ -93,6 +100,13 @@ yet another way to substitute values into strings, using placeholders like
 ``$x`` and replacing them with values from a dictionary, but offers much less
 control of the formatting.
 
+.. index::
+   single: formatted string literal
+   single: interpolated string literal
+   single: string; formatted literal
+   single: string; interpolated literal
+   single: f-string
+   single: fstring
 
 .. _tut-f-strings:
 
@@ -197,7 +211,12 @@ notation. ::
    Jack: 4098; Sjoerd: 4127; Dcab: 8637678
 
 This is particularly useful in combination with the built-in function
-:func:`vars`, which returns a dictionary containing all local variables.
+:func:`vars`, which returns a dictionary containing all local variables::
+
+   >>> table = {k: str(v) for k, v in vars().items()}
+   >>> message = " ".join([f'{k}: ' + '{' + k +'};' for k in table.keys()])
+   >>> print(message.format(**table))
+   __name__: __main__; __doc__: None; __package__: None; __loader__: ...
 
 As an example, the following lines produce a tidily aligned
 set of columns giving integers and their squares and cubes::
@@ -267,9 +286,11 @@ left with zeros.  It understands about plus and minus signs::
 Old string formatting
 ---------------------
 
-The % operator (modulo) can also be used for string formatting. Given ``'string'
-% values``, instances of ``%`` in ``string`` are replaced with zero or more
-elements of ``values``. This operation is commonly known as string
+The % operator (modulo) can also be used for string formatting.
+Given ``format % values`` (where *format* is a string),
+``%`` conversion specifications in *format* are replaced with
+zero or more elements of *values*.
+This operation is commonly known as string
 interpolation. For example::
 
    >>> import math
diff --git a/Doc/tutorial/introduction.rst b/Doc/tutorial/introduction.rst
index 0f16dae8b1418f..65e3b1938bca9c 100644
--- a/Doc/tutorial/introduction.rst
+++ b/Doc/tutorial/introduction.rst
@@ -62,7 +62,7 @@ For example::
    20
    >>> (50 - 5*6) / 4
    5.0
-   >>> 8 / 5  # division always returns a floating point number
+   >>> 8 / 5  # division always returns a floating-point number
    1.6
 
 The integer numbers (e.g. ``2``, ``4``, ``20``) have type :class:`int`,
@@ -197,21 +197,19 @@ and workarounds.
 String literals can span multiple lines.  One way is using triple-quotes:
 ``"""..."""`` or ``'''...'''``.  End of lines are automatically
 included in the string, but it's possible to prevent this by adding a ``\`` at
-the end of the line.  The following example::
-
-   print("""\
+the end of the line.  In the following example, the initial newline is not
+included::
+
+   >>> print("""\
+   ... Usage: thingy [OPTIONS]
+   ...      -h                        Display this usage message
+   ...      -H hostname               Hostname to connect to
+   ... """)
    Usage: thingy [OPTIONS]
         -h                        Display this usage message
         -H hostname               Hostname to connect to
-   """)
-
-produces the following output (note that the initial newline is not included):
 
-.. code-block:: text
-
-   Usage: thingy [OPTIONS]
-        -h                        Display this usage message
-        -H hostname               Hostname to connect to
+   >>>
 
 Strings can be concatenated (glued together) with the ``+`` operator, and
 repeated with ``*``::
@@ -501,8 +499,8 @@ together.  For instance, we can write an initial sub-sequence of the
 as follows::
 
    >>> # Fibonacci series:
-   ... # the sum of two elements defines the next
-   ... a, b = 0, 1
+   >>> # the sum of two elements defines the next
+   >>> a, b = 0, 1
    >>> while a < 10:
    ...     print(a)
    ...     a, b = b, a+b
@@ -544,7 +542,7 @@ This example introduces several new features.
 * The :func:`print` function writes the value of the argument(s) it is given.
   It differs from just writing the expression you want to write (as we did
   earlier in the calculator examples) in the way it handles multiple arguments,
-  floating point quantities, and strings.  Strings are printed without quotes,
+  floating-point quantities, and strings.  Strings are printed without quotes,
   and a space is inserted between items, so you can format things nicely, like
   this::
 
diff --git a/Doc/tutorial/modules.rst b/Doc/tutorial/modules.rst
index 0316239e776a95..de7aa0e2342946 100644
--- a/Doc/tutorial/modules.rst
+++ b/Doc/tutorial/modules.rst
@@ -585,8 +585,9 @@ as the main module of a Python application must always use absolute imports.
 Packages in Multiple Directories
 --------------------------------
 
-Packages support one more special attribute, :attr:`__path__`.  This is
-initialized to be a list containing the name of the directory holding the
+Packages support one more special attribute, :attr:`~module.__path__`.  This is
+initialized to be a :term:`sequence` of strings containing the name of the
+directory holding the
 package's :file:`__init__.py` before the code in that file is executed.  This
 variable can be modified; doing so affects future searches for modules and
 subpackages contained in the package.
diff --git a/Doc/tutorial/stdlib.rst b/Doc/tutorial/stdlib.rst
index 9def2a5714950b..e96e3431925011 100644
--- a/Doc/tutorial/stdlib.rst
+++ b/Doc/tutorial/stdlib.rst
@@ -138,7 +138,7 @@ Mathematics
 ===========
 
 The :mod:`math` module gives access to the underlying C library functions for
-floating point math::
+floating-point math::
 
    >>> import math
    >>> math.cos(math.pi / 4)
diff --git a/Doc/tutorial/stdlib2.rst b/Doc/tutorial/stdlib2.rst
index 09b6f3d91bcfed..4f460b8e6ec45b 100644
--- a/Doc/tutorial/stdlib2.rst
+++ b/Doc/tutorial/stdlib2.rst
@@ -293,7 +293,7 @@ Many data structure needs can be met with the built-in list type. However,
 sometimes there is a need for alternative implementations with different
 performance trade-offs.
 
-The :mod:`array` module provides an :class:`~array.array()` object that is like
+The :mod:`array` module provides an :class:`~array.array` object that is like
 a list that stores only homogeneous data and stores it more compactly.  The
 following example shows an array of numbers stored as two byte unsigned binary
 numbers (typecode ``"H"``) rather than the usual 16 bytes per entry for regular
@@ -306,7 +306,7 @@ lists of Python int objects::
    >>> a[1:3]
    array('H', [10, 700])
 
-The :mod:`collections` module provides a :class:`~collections.deque()` object
+The :mod:`collections` module provides a :class:`~collections.deque` object
 that is like a list with faster appends and pops from the left side but slower
 lookups in the middle. These objects are well suited for implementing queues
 and breadth first tree searches::
@@ -352,11 +352,11 @@ not want to run a full list sort::
 
 .. _tut-decimal-fp:
 
-Decimal Floating Point Arithmetic
+Decimal Floating-Point Arithmetic
 =================================
 
 The :mod:`decimal` module offers a :class:`~decimal.Decimal` datatype for
-decimal floating point arithmetic.  Compared to the built-in :class:`float`
+decimal floating-point arithmetic.  Compared to the built-in :class:`float`
 implementation of binary floating point, the class is especially helpful for
 
 * financial applications and other uses which require exact decimal
diff --git a/Doc/tutorial/venv.rst b/Doc/tutorial/venv.rst
index a6dead2eac11f6..91e4ce18acef1d 100644
--- a/Doc/tutorial/venv.rst
+++ b/Doc/tutorial/venv.rst
@@ -36,10 +36,10 @@ Creating Virtual Environments
 =============================
 
 The module used to create and manage virtual environments is called
-:mod:`venv`.  :mod:`venv` will usually install the most recent version of
-Python that you have available. If you have multiple versions of Python on your
-system, you can select a specific Python version by running ``python3`` or
-whichever version you want.
+:mod:`venv`.  :mod:`venv` will install the Python version from which
+the command was run (as reported by the :option:`--version` option).
+For instance, executing the command with ``python3.12`` will install
+version 3.12.
 
 To create a virtual environment, decide upon a directory where you want to
 place it, and run the :mod:`venv` module as a script with the directory path::
diff --git a/Doc/using/android.rst b/Doc/using/android.rst
new file mode 100644
index 00000000000000..957705f7f5e189
--- /dev/null
+++ b/Doc/using/android.rst
@@ -0,0 +1,65 @@
+.. _using-android:
+
+=======================
+Using Python on Android
+=======================
+
+Python on Android is unlike Python on desktop platforms. On a desktop platform,
+Python is generally installed as a system resource that can be used by any user
+of that computer. Users then interact with Python by running a :program:`python`
+executable and entering commands at an interactive prompt, or by running a
+Python script.
+
+On Android, there is no concept of installing as a system resource. The only unit
+of software distribution is an "app". There is also no console where you could
+run a :program:`python` executable, or interact with a Python REPL.
+
+As a result, the only way you can use Python on Android is in embedded mode – that
+is, by writing a native Android application, embedding a Python interpreter
+using ``libpython``, and invoking Python code using the :ref:`Python embedding
+API <embedding>`. The full Python interpreter, the standard library, and all
+your Python code is then packaged into your app for its own private use.
+
+The Python standard library has some notable omissions and restrictions on
+Android. See the :ref:`API availability guide <mobile-availability>` for
+details.
+
+Adding Python to an Android app
+-------------------------------
+
+These instructions are only needed if you're planning to compile Python for
+Android yourself. Most users should *not* need to do this. Instead, use one of
+the following tools, which will provide a much easier experience:
+
+* `Briefcase <https://briefcase.readthedocs.io>`__, from the BeeWare project
+* `Buildozer <https://buildozer.readthedocs.io>`__, from the Kivy project
+* `Chaquopy <https://chaquo.com/chaquopy>`__
+* `pyqtdeploy <https://www.riverbankcomputing.com/static/Docs/pyqtdeploy/>`__
+* `Termux <https://termux.dev/en/>`__
+
+If you're sure you want to do all of this manually, read on. You can use the
+:source:`testbed app <Android/testbed>` as a guide; each step below contains a
+link to the relevant file.
+
+* Build Python by following the instructions in :source:`Android/README.md`.
+
+* Add code to your :source:`build.gradle <Android/testbed/app/build.gradle.kts>`
+  file to copy the following items into your project. All except your own Python
+  code can be copied from ``cross-build/HOST/prefix/lib``:
+
+  * In your JNI libraries:
+
+    * ``libpython*.*.so``
+    * ``lib*_python.so`` (external libraries such as OpenSSL)
+
+  * In your assets:
+
+    * ``python*.*`` (the Python standard library)
+    * ``python*.*/site-packages`` (your own Python code)
+
+* Add code to your app to :source:`extract the assets to the filesystem
+  <Android/testbed/app/src/main/java/org/python/testbed/MainActivity.kt>`.
+
+* Add code to your app to :source:`start Python in embedded mode
+  <Android/testbed/app/src/main/c/main_activity.c>`. This will need to be C code
+  called via JNI.
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 2d95fa9474033f..797ba29ad5476c 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -24,7 +24,7 @@ Command line
 
 When invoking Python, you may specify any of these options::
 
-    python [-bBdEhiIOqsSuvVWx?] [-c command | -m module-name | script | - ] [args]
+    python [-bBdEhiIOPqRsSuvVWx?] [-c command | -m module-name | script | - ] [args]
 
 The most common use case is, of course, a simple invocation of a script::
 
@@ -441,6 +441,7 @@ Miscellaneous options
        -Wdefault  # Warn once per call location
        -Werror    # Convert to exceptions
        -Walways   # Warn every time
+       -Wall      # Same as -Walways
        -Wmodule   # Warn once per calling module
        -Wonce     # Warn once per Python process
        -Wignore   # Never warn
@@ -615,8 +616,9 @@ Miscellaneous options
      .. versionadded:: 3.13
 
    * :samp:`-X gil={0,1}` forces the GIL to be disabled or enabled,
-     respectively. Only available in builds configured with
-     :option:`--disable-gil`. See also :envvar:`PYTHON_GIL`.
+     respectively. Setting to ``0`` is only available in builds configured with
+     :option:`--disable-gil`. See also :envvar:`PYTHON_GIL` and
+     :ref:`whatsnew313-free-threaded-cpython`.
 
      .. versionadded:: 3.13
 
@@ -785,6 +787,15 @@ conflict.
    This variable can also be modified by Python code using :data:`os.environ`
    to force inspect mode on program termination.
 
+   .. audit-event:: cpython.run_stdin "" ""
+
+   .. versionchanged:: 3.12.5 (also 3.11.10, 3.10.15, 3.9.20, and 3.8.20)
+      Emits audit events.
+
+   .. versionchanged:: 3.13
+      Uses PyREPL if possible, in which case :envvar:`PYTHONSTARTUP` is
+      also executed. Emits audit events.
+
 
 .. envvar:: PYTHONUNBUFFERED
 
@@ -908,6 +919,7 @@ conflict.
        PYTHONWARNINGS=default  # Warn once per call location
        PYTHONWARNINGS=error    # Convert to exceptions
        PYTHONWARNINGS=always   # Warn every time
+       PYTHONWARNINGS=all      # Same as PYTHONWARNINGS=always
        PYTHONWARNINGS=module   # Warn once per calling module
        PYTHONWARNINGS=once     # Warn once per Python process
        PYTHONWARNINGS=ignore   # Never warn
@@ -1013,7 +1025,7 @@ conflict.
    'surrogatepass' are used.
 
    This may also be enabled at runtime with
-   :func:`sys._enablelegacywindowsfsencoding()`.
+   :func:`sys._enablelegacywindowsfsencoding`.
 
    .. availability:: Windows.
 
@@ -1185,7 +1197,7 @@ conflict.
 
 .. envvar:: PYTHON_BASIC_REPL
 
-   If this variable is set to ``1``, the interpreter will not attempt to
+   If this variable is set to any value, the interpreter will not attempt to
    load the Python-based :term:`REPL` that requires :mod:`curses` and
    :mod:`readline`, and will instead use the traditional parser-based
    :term:`REPL`.
@@ -1203,12 +1215,11 @@ conflict.
 .. envvar:: PYTHON_GIL
 
    If this variable is set to ``1``, the global interpreter lock (GIL) will be
-   forced on. Setting it to ``0`` forces the GIL off.
+   forced on. Setting it to ``0`` forces the GIL off (needs Python configured with
+   the :option:`--disable-gil` build option).
 
    See also the :option:`-X gil <-X>` command-line option, which takes
-   precedence over this variable.
-
-   Needs Python configured with the :option:`--disable-gil` build option.
+   precedence over this variable, and :ref:`whatsnew313-free-threaded-cpython`.
 
    .. versionadded:: 3.13
 
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
index d30356d2058eff..1a1f8ae02df0c0 100644
--- a/Doc/using/configure.rst
+++ b/Doc/using/configure.rst
@@ -16,8 +16,8 @@ Features and minimum versions required to build CPython:
 
 * On Windows, Microsoft Visual Studio 2017 or later is required.
 
-* Support for `IEEE 754 <https://en.wikipedia.org/wiki/IEEE_754>`_ floating
-  point numbers and `floating point Not-a-Number (NaN)
+* Support for `IEEE 754 <https://en.wikipedia.org/wiki/IEEE_754>`_
+  floating-point numbers and `floating-point Not-a-Number (NaN)
   <https://en.wikipedia.org/wiki/NaN#Floating_point>`_.
 
 * Support for threads.
@@ -29,7 +29,7 @@ Features and minimum versions required to build CPython:
 
 * Tcl/Tk 8.5.12 for the :mod:`tkinter` module.
 
-* Autoconf 2.71 and aclocal 1.16.4 are required to regenerate the
+* Autoconf 2.71 and aclocal 1.16.5 are required to regenerate the
   :file:`configure` script.
 
 .. versionchanged:: 3.1
@@ -56,7 +56,7 @@ Features and minimum versions required to build CPython:
    Tcl/Tk version 8.5.12 is now required for the :mod:`tkinter` module.
 
 .. versionchanged:: 3.13
-   Autoconf 2.71, aclocal 1.16.4 and SQLite 3.15.2 are now required.
+   Autoconf 2.71, aclocal 1.16.5 and SQLite 3.15.2 are now required.
 
 See also :pep:`7` "Style Guide for C Code" and :pep:`11` "CPython platform
 support".
@@ -299,7 +299,24 @@ General Options
    Defines the ``Py_GIL_DISABLED`` macro and adds ``"t"`` to
    :data:`sys.abiflags`.
 
-   See :pep:`703` "Making the Global Interpreter Lock Optional in CPython".
+   See :ref:`whatsnew313-free-threaded-cpython` for more detail.
+
+   .. versionadded:: 3.13
+
+.. option:: --enable-experimental-jit=[no|yes|yes-off|interpreter]
+
+   Indicate how to integrate the :ref:`JIT compiler <whatsnew313-jit-compiler>`.
+
+   * ``no`` - build the interpreter without the JIT.
+   * ``yes`` - build the interpreter with the JIT.
+   * ``yes-off`` - build the interpreter with the JIT but disable it by default.
+   * ``interpreter`` - build the interpreter without the JIT, but with the tier 2 enabled interpreter.
+
+   By convention, ``--enable-experimental-jit`` is a shorthand for ``--enable-experimental-jit=yes``.
+
+   .. note::
+
+      When building CPython with JIT enabled, ensure that your system has Python 3.11 or later installed.
 
    .. versionadded:: 3.13
 
@@ -427,7 +444,7 @@ Options for third-party dependencies
 .. option:: PANEL_CFLAGS
 .. option:: PANEL_LIBS
 
-   C compiler and Linker flags for PANEL, overriding ``pkg-config``.
+   C compiler and linker flags for PANEL, overriding ``pkg-config``.
 
    C compiler and linker flags for ``libpanel`` or ``libpanelw``, used by
    :mod:`curses.panel` module, overriding ``pkg-config``.
@@ -615,7 +632,7 @@ also be used to improve performance.
 
 .. option:: --without-mimalloc
 
-   Disable the fast mimalloc allocator :ref:`mimalloc <mimalloc>`
+   Disable the fast :ref:`mimalloc <mimalloc>` allocator
    (enabled by default).
 
    See also :envvar:`PYTHONMALLOC` environment variable.
@@ -708,7 +725,7 @@ Debug options
    Effects:
 
    * Define the ``Py_TRACE_REFS`` macro.
-   * Add :func:`!sys.getobjects` function.
+   * Add :func:`sys.getobjects` function.
    * Add :envvar:`PYTHONDUMPREFS` environment variable.
 
    The :envvar:`PYTHONDUMPREFS` environment variable can be used to dump
@@ -945,6 +962,17 @@ See :source:`Mac/README.rst`.
    Specify the name for the python framework on macOS only valid when
    :option:`--enable-framework` is set (default: ``Python``).
 
+.. option:: --with-app-store-compliance
+.. option:: --with-app-store-compliance=PATCH-FILE
+
+   The Python standard library contains strings that are known to trigger
+   automated inspection tool errors when submitted for distribution by
+   the macOS and iOS App Stores. If enabled, this option will apply the list of
+   patches that are known to correct app store compliance. A custom patch
+   file can also be specified. This option is disabled by default.
+
+   .. versionadded:: 3.13
+
 iOS Options
 -----------
 
@@ -1090,7 +1118,7 @@ Remove built files.
 make distclean
 ^^^^^^^^^^^^^^
 
-In addition to the the work done by ``make clean``, remove files
+In addition to the work done by ``make clean``, remove files
 created by the configure script.  ``configure`` will have to be run
 before building again. [#]_
 
diff --git a/Doc/using/index.rst b/Doc/using/index.rst
index f55a12f1ab8a0d..90fdfc0bec0583 100644
--- a/Doc/using/index.rst
+++ b/Doc/using/index.rst
@@ -12,11 +12,13 @@ interpreter and things that make working with Python easier.
 
 .. toctree::
    :numbered:
+   :maxdepth: 2
 
    cmdline.rst
    unix.rst
    configure.rst
    windows.rst
    mac.rst
+   android.rst
    ios.rst
    editors.rst
diff --git a/Doc/using/ios.rst b/Doc/using/ios.rst
index da8f42048c0faf..aa43f75ec35a6c 100644
--- a/Doc/using/ios.rst
+++ b/Doc/using/ios.rst
@@ -33,6 +33,17 @@ running, so you only need to deal with the Python code itself.
 Python at runtime on iOS
 ========================
 
+iOS version compatibility
+-------------------------
+
+The minimum supported iOS version is specified at compile time, using the
+:option:`--host` option to ``configure``. By default, when compiled for iOS,
+Python will be compiled with a minimum supported iOS version of 13.0. To use a
+different minimum iOS version, provide the version number as part of the
+:option:`!--host` argument - for example,
+``--host=arm64-apple-ios15.4-simulator`` would compile an ARM64 simulator build
+with a deployment target of 15.4.
+
 Platform identification
 -----------------------
 
@@ -42,17 +53,17 @@ the simulator or a physical device.
 
 Information about the specific runtime environment, including the iOS version,
 device model, and whether the device is a simulator, can be obtained using
-:func:`platform.ios_ver()`. :func:`platform.system()` will report ``iOS`` or
+:func:`platform.ios_ver`. :func:`platform.system` will report ``iOS`` or
 ``iPadOS``, depending on the device.
 
-:func:`os.uname()` reports kernel-level details; it will report a name of
+:func:`os.uname` reports kernel-level details; it will report a name of
 ``Darwin``.
 
 Standard library availability
 -----------------------------
 
 The Python standard library has some notable omissions and restrictions on
-iOS. See the :ref:`API availability guide for iOS <iOS-availability>` for
+iOS. See the :ref:`API availability guide for iOS <mobile-availability>` for
 details.
 
 Binary extension modules
@@ -281,10 +292,12 @@ To add Python to an iOS Xcode project:
 10. Add Objective C code to initialize and use a Python interpreter in embedded
     mode. You should ensure that:
 
-   * :c:member:`UTF-8 mode <PyPreConfig.utf8_mode>` is *enabled*;
-   * :c:member:`Buffered stdio <PyConfig.buffered_stdio>` is *disabled*;
-   * :c:member:`Writing bytecode <PyConfig.write_bytecode>` is *disabled*;
-   * :c:member:`Signal handlers <PyConfig.install_signal_handlers>` are *enabled*;
+   * UTF-8 mode (:c:member:`PyPreConfig.utf8_mode`) is *enabled*;
+   * Buffered stdio (:c:member:`PyConfig.buffered_stdio`) is *disabled*;
+   * Writing bytecode (:c:member:`PyConfig.write_bytecode`) is *disabled*;
+   * Signal handlers (:c:member:`PyConfig.install_signal_handlers`) are *enabled*;
+   * System logging (:c:member:`PyConfig.use_system_logger`) is *enabled*
+     (optional, but strongly recommended);
    * ``PYTHONHOME`` for the interpreter is configured to point at the
      ``python`` subfolder of your app's bundle; and
    * The ``PYTHONPATH`` for the interpreter includes:
@@ -303,8 +316,8 @@ modules in your app, some additional steps will be required:
 * You need to ensure that any folders containing third-party binaries are
   either associated with the app target, or copied in as part of step 8. Step 8
   should also purge any binaries that are not appropriate for the platform a
-  specific build is targetting (i.e., delete any device binaries if you're
-  building app app targeting the simulator).
+  specific build is targeting (i.e., delete any device binaries if you're
+  building an app targeting the simulator).
 
 * Any folders that contain third-party binaries must be processed into
   framework form by step 9. The invocation of ``install_dylib`` that processes
@@ -312,3 +325,64 @@ modules in your app, some additional steps will be required:
 
 * If you're using a separate folder for third-party packages, ensure that folder
   is included as part of the ``PYTHONPATH`` configuration in step 10.
+
+Testing a Python package
+------------------------
+
+The CPython source tree contains :source:`a testbed project <iOS/testbed>` that
+is used to run the CPython test suite on the iOS simulator. This testbed can also
+be used as a testbed project for running your Python library's test suite on iOS.
+
+After building or obtaining an iOS XCFramework (See :source:`iOS/README.rst`
+for details), create a clone of the Python iOS testbed project by running:
+
+.. code-block:: bash
+
+    $ python iOS/testbed clone --framework <path/to/Python.xcframework> --app <path/to/module1> --app <path/to/module2> app-testbed
+
+You will need to modify the ``iOS/testbed`` reference to point to that
+directory in the CPython source tree; any folders specified with the ``--app``
+flag will be copied into the cloned testbed project. The resulting testbed will
+be created in the ``app-testbed`` folder. In this example, the ``module1`` and
+``module2`` would be importable modules at runtime. If your project has
+additional dependencies, they can be installed into the
+``app-testbed/iOSTestbed/app_packages`` folder (using ``pip install --target
+app-testbed/iOSTestbed/app_packages`` or similar).
+
+You can then use the ``app-testbed`` folder to run the test suite for your app,
+For example, if ``module1.tests`` was the entry point to your test suite, you
+could run:
+
+.. code-block:: bash
+
+    $ python app-testbed run -- module1.tests
+
+This is the equivalent of running ``python -m module1.tests`` on a desktop
+Python build. Any arguments after the ``--`` will be passed to the testbed as
+if they were arguments to ``python -m`` on a desktop machine.
+
+You can also open the testbed project in Xcode by running:
+
+.. code-block:: bash
+
+    $ open app-testbed/iOSTestbed.xcodeproj
+
+This will allow you to use the full Xcode suite of tools for debugging.
+
+App Store Compliance
+====================
+
+The only mechanism for distributing apps to third-party iOS devices is to
+submit the app to the iOS App Store; apps submitted for distribution must pass
+Apple's app review process. This process includes a set of automated validation
+rules that inspect the submitted application bundle for problematic code.
+
+The Python standard library contains some code that is known to violate these
+automated rules. While these violations appear to be false positives, Apple's
+review rules cannot be challenged; so, it is necessary to modify the Python
+standard library for an app to pass App Store review.
+
+The Python source tree contains
+:source:`a patch file <Mac/Resources/app-store-compliance.patch>` that will remove
+all code that is known to cause issues with the App Store review process. This
+patch is applied automatically when building for iOS.
diff --git a/Doc/using/mac.rst b/Doc/using/mac.rst
index 31d37aad2a7408..4b6c884f3d4f25 100644
--- a/Doc/using/mac.rst
+++ b/Doc/using/mac.rst
@@ -2,140 +2,223 @@
 .. _using-on-mac:
 
 *********************
-Using Python on a Mac
+Using Python on macOS
 *********************
 
-:Author: Bob Savage <bobsavage@mac.com>
+.. sectionauthor:: Bob Savage <bobsavage@mac.com>
+.. sectionauthor:: Ned Deily <nad@python.org>
 
+This document aims to give an overview of macOS-specific behavior you should
+know about to get started with Python on Mac computers.
+Python on a Mac running macOS is very similar to Python on other Unix-derived platforms,
+but there are some differences in installation and some features.
 
-Python on a Mac running macOS is in principle very similar to Python on
-any other Unix platform, but there are a number of additional features such as
-the integrated development environment (IDE) and the Package Manager that are
-worth pointing out.
+There are various ways to obtain and install Python for macOS.
+Pre-built versions of the most recent versions of Python are available
+from a number of distributors. Much of this document describes use of
+the Pythons provided by the CPython release team for download from
+the `python.org website <https://www.python.org/downloads/>`_. See
+:ref:`alternative_bundles` for some other options.
 
+.. |usemac_x_dot_y| replace:: 3.13
+.. |usemac_python_x_dot_y_literal| replace:: ``python3.13``
+.. |usemac_python_x_dot_y_t_literal| replace:: ``python3.13t``
+.. |usemac_python_x_dot_y_t_literal_config| replace:: ``python3.13t-config``
+.. |usemac_applications_folder_name| replace:: ``Python 3.13``
+.. |usemac_applications_folder_version| replace:: ``/Applications/Python 3.13/``
 
 .. _getting-osx:
 .. _getting-and-installing-macpython:
 
-Getting and Installing Python
-=============================
+Using Python for macOS from ``python.org``
+==========================================
 
-macOS used to come with Python 2.7 pre-installed between versions
-10.8 and `12.3 <https://developer.apple.com/documentation/macos-release-notes/macos-12_3-release-notes#Python>`_.
-You are invited to install the most recent version of Python 3 from the `Python
-website <https://www.python.org/downloads/macos/>`__.
-A current "universal2 binary" build of Python, which runs natively on the Mac's
-new Apple Silicon and legacy Intel processors, is available there.
+Installation steps
+------------------
 
-What you get after installing is a number of things:
+For `current Python versions <https://www.python.org/downloads/>`_
+(other than those in ``security`` status), the release team produces a
+**Python for macOS** installer package for each new release.
+A list of available installers
+is available `here <https://www.python.org/downloads/macos/>`_.
+We recommend using the most recent supported Python version where possible.
+Current installers provide a
+`universal2 binary <https://en.wikipedia.org/wiki/Universal_binary>`_ build
+of Python which runs natively on all Macs (Apple Silicon and Intel) that are
+supported by a wide range of macOS versions,
+currently typically from at least **macOS 10.13 High Sierra** on.
 
-* A |python_version_literal| folder in your :file:`Applications` folder. In here
-  you find IDLE, the development environment that is a standard part of official
+The downloaded file is a standard macOS installer package file (``.pkg``).
+File integrity information (checksum, size, sigstore signature, etc) for each file is included
+on the release download page. Installer packages and their contents are signed and notarized
+with ``Python Software Foundation`` Apple Developer ID certificates
+to meet `macOS Gatekeeper requirements <https://support.apple.com/en-us/102445>`_.
+
+For a default installation, double-click on the downloaded installer package file.
+This should launch the standard macOS Installer app and display the first of several
+installer windows steps.
+
+.. image:: mac_installer_01_introduction.png
+
+Clicking on the **Continue** button brings up the **Read Me** for this installer.
+Besides other important information, the **Read Me** documents which Python version is
+going to be installed and on what versions of macOS it is supported. You may need
+to scroll through to read the whole file. By default, this **Read Me** will also be
+installed in |usemac_applications_folder_version| and available to read anytime.
+
+.. image:: mac_installer_02_readme.png
+
+Clicking on **Continue** proceeds to display the license for Python and for
+other included software. You will then need to **Agree** to the license terms
+before proceeding to the next step. This license file will also be installed
+and available to be read later.
+
+.. image:: mac_installer_03_license.png
+
+After the license terms are accepted, the next step is the **Installation Type**
+display. For most uses, the standard set of installation operations is appropriate.
+
+.. image:: mac_installer_04_installation_type.png
+
+By pressing the **Customize** button, you can choose to omit or select certain package
+components of the installer. Click on each package name to see a description of
+what it installs.
+To also install support for the optional experimental free-threaded feature,
+see :ref:`install-freethreaded-macos`.
+
+.. image:: mac_installer_05_custom_install.png
+
+In either case, clicking **Install** will begin the install process by asking
+permission to install new software. A macOS user name with ``Administrator`` privilege
+is needed as the installed Python will be available to all users of the Mac.
+
+When the installation is complete, the **Summary** window will appear.
+
+.. image:: mac_installer_06_summary.png
+
+Double-click on the :command:`Install Certificates.command`
+icon or file in the |usemac_applications_folder_version| window to complete the
+installation.
+
+.. image:: mac_installer_07_applications.png
+
+This will open a temporary :program:`Terminal` shell window that
+will use the new Python to download and install SSL root certificates
+for its use.
+
+.. image:: mac_installer_08_install_certificates.png
+
+If ``Successfully installed certifi`` and ``update complete`` appears
+in the terminal window, the installation is complete.
+Close this terminal window and the installer window.
+
+A default install will include:
+
+* A |usemac_applications_folder_name| folder in your :file:`Applications` folder. In here
+  you find :program:`IDLE`, the development environment that is a standard part of official
   Python distributions; and :program:`Python Launcher`, which handles double-clicking Python
-  scripts from the Finder.
+  scripts from the macOS `Finder <https://support.apple.com/en-us/HT201732>`_.
 
 * A framework :file:`/Library/Frameworks/Python.framework`, which includes the
   Python executable and libraries. The installer adds this location to your shell
-  path. To uninstall Python, you can remove these three things. A
-  symlink to the Python executable is placed in :file:`/usr/local/bin/`.
+  path. To uninstall Python, you can remove these three things.
+  Symlinks to the Python executable are placed in :file:`/usr/local/bin/`.
 
 .. note::
 
-   On macOS 10.8-12.3, the Apple-provided build of Python is installed in
-   :file:`/System/Library/Frameworks/Python.framework` and :file:`/usr/bin/python`,
-   respectively. You should never modify or delete these, as they are
-   Apple-controlled and are used by Apple- or third-party software.  Remember that
-   if you choose to install a newer Python version from python.org, you will have
-   two different but functional Python installations on your computer, so it will
-   be important that your paths and usages are consistent with what you want to do.
-
-IDLE includes a Help menu that allows you to access Python documentation. If you
-are completely new to Python you should start reading the tutorial introduction
-in that document.
-
-If you are familiar with Python on other Unix platforms you should read the
-section on running Python scripts from the Unix shell.
-
+   Recent versions of macOS include a :command:`python3` command in :file:`/usr/bin/python3`
+   that links to a usually older and incomplete version of Python provided by and for use by
+   the Apple development tools, :program:`Xcode` or the :program:`Command Line Tools for Xcode`.
+   You should never modify or attempt to delete this installation, as it is
+   Apple-controlled and is used by Apple-provided or third-party software.  If
+   you choose to install a newer Python version from ``python.org``, you will have
+   two different but functional Python installations on your computer that
+   can co-exist. The default installer options should ensure that its :command:`python3`
+   will be used instead of the system :command:`python3`.
 
 How to run a Python script
 --------------------------
 
-Your best way to get started with Python on macOS is through the IDLE
-integrated development environment; see section :ref:`ide` and use the Help menu
-when the IDE is running.
+There are two ways to invoke the Python interpreter.
+If you are familiar with using a Unix shell in a terminal
+window, you can invoke |usemac_python_x_dot_y_literal| or ``python3`` optionally
+followed by one or more command line options (described in :ref:`using-on-general`).
+The Python tutorial also has a useful section on
+:ref:`using Python interactively from a shell <tut-interac>`.
+
+You can also invoke the interpreter through an integrated
+development environment.
+:ref:`idle` is a basic editor and interpreter environment
+which is included with the standard distribution of Python.
+:program:`IDLE` includes a Help menu that allows you to access Python documentation. If you
+are completely new to Python, you can read the tutorial introduction
+in that document.
+
+There are many other editors and IDEs available, see :ref:`editors`
+for more information.
 
-If you want to run Python scripts from the Terminal window command line or from
-the Finder you first need an editor to create your script. macOS comes with a
-number of standard Unix command line editors, :program:`vim`
-:program:`nano` among them. If you want a more Mac-like editor,
-:program:`BBEdit` from Bare Bones Software (see
-https://www.barebones.com/products/bbedit/index.html) are good choices, as is
-:program:`TextMate` (see https://macromates.com). Other editors include
-:program:`MacVim` (https://macvim.org) and :program:`Aquamacs`
-(https://aquamacs.org).
+To run a Python script file from the terminal window, you can
+invoke the interpreter with the name of the script file:
 
-To run your script from the Terminal window you must make sure that
-:file:`/usr/local/bin` is in your shell search path.
+    |usemac_python_x_dot_y_literal| ``myscript.py``
 
-To run your script from the Finder you have two options:
+To run your script from the Finder, you can either:
 
 * Drag it to :program:`Python Launcher`.
 
 * Select :program:`Python Launcher` as the default application to open your
-  script (or any ``.py`` script) through the finder Info window and double-click it.
+  script (or any ``.py`` script) through the Finder Info window and double-click it.
   :program:`Python Launcher` has various preferences to control how your script is
   launched. Option-dragging allows you to change these for one invocation, or use
-  its Preferences menu to change things globally.
-
+  its ``Preferences`` menu to change things globally.
 
-.. _osx-gui-scripts:
-
-Running scripts with a GUI
---------------------------
+Be aware that running the script directly from the macOS Finder might
+produce different results than when running from a terminal window as
+the script will not be run in the usual shell environment including
+any setting of environment variables in shell profiles.
+And, as with any other script or program,
+be certain of what you are about to run.
 
-With older versions of Python, there is one macOS quirk that you need to be
-aware of: programs that talk to the Aqua window manager (in other words,
-anything that has a GUI) need to be run in a special way. Use :program:`pythonw`
-instead of :program:`python` to start such scripts.
+.. _alternative_bundles:
 
-With Python 3.9, you can use either :program:`python` or :program:`pythonw`.
+Alternative Distributions
+=========================
 
+Besides the standard ``python.org`` for macOS installer, there are third-party
+distributions for macOS that may include additional functionality.
+Some popular distributions and their key features:
 
-Configuration
--------------
+`ActivePython <https://www.activestate.com/products/python/>`_
+    Installer with multi-platform compatibility, documentation
 
-Python on macOS honors all standard Unix environment variables such as
-:envvar:`PYTHONPATH`, but setting these variables for programs started from the
-Finder is non-standard as the Finder does not read your :file:`.profile` or
-:file:`.cshrc` at startup. You need to create a file
-:file:`~/.MacOSX/environment.plist`. See Apple's
-`Technical Q&A QA1067 <https://developer.apple.com/library/archive/qa/qa1067/_index.html>`__
-for details.
+`Anaconda <https://www.anaconda.com/download/>`_
+    Popular scientific modules (such as numpy, scipy, and pandas) and the
+    ``conda`` package manager.
 
-For more information on installation Python packages, see section
-:ref:`mac-package-manager`.
+`Homebrew <https://brew.sh>`_
+    Package manager for macOS including multiple versions of Python and many
+    third-party Python-based packages (including numpy, scipy, and pandas).
 
+`MacPorts <https://www.macports.org>`_
+    Another package manager for macOS including multiple versions of Python and many
+    third-party Python-based packages. May include pre-built versions of Python and
+    many packages for older versions of macOS.
 
-.. _ide:
-
-The IDE
-=======
-
-Python ships with the standard IDLE development environment. A good
-introduction to using IDLE can be found at
-https://www.hashcollision.org/hkn/python/idle_intro/index.html.
-
+Note that distributions might not include the latest versions of Python or
+other libraries, and are not maintained or supported by the core Python team.
 
 .. _mac-package-manager:
 
 Installing Additional Python Packages
 =====================================
 
-This section has moved to the `Python Packaging User Guide`_.
+Refer to the `Python Packaging User Guide`_ for more information.
 
 .. _Python Packaging User Guide: https://packaging.python.org/en/latest/tutorials/installing-packages/
 
 
+.. _osx-gui-scripts:
+
 .. _gui-programming-on-the-mac:
 
 GUI Programming
@@ -143,36 +226,209 @@ GUI Programming
 
 There are several options for building GUI applications on the Mac with Python.
 
-*PyObjC* is a Python binding to Apple's Objective-C/Cocoa framework, which is
-the foundation of most modern Mac development. Information on PyObjC is
-available from :pypi:`pyobjc`.
-
 The standard Python GUI toolkit is :mod:`tkinter`, based on the cross-platform
-Tk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with
-macOS by Apple, and the latest version can be downloaded and installed from
-https://www.activestate.com; it can also be built from source.
+Tk toolkit (https://www.tcl.tk). A macOS-native version of Tk is included with
+the installer.
 
-A number of alternative macOS GUI toolkits are available:
+*PyObjC* is a Python binding to Apple's Objective-C/Cocoa framework.
+Information on PyObjC is available from :pypi:`pyobjc`.
 
-* `PySide <https://www.qt.io/qt-for-python>`__: Official Python bindings to the
-  `Qt GUI toolkit <https://qt.io>`__.
+A number of alternative macOS GUI toolkits are available including:
 
-* `PyQt <https://riverbankcomputing.com/software/pyqt/intro>`__: Alternative
+* `PySide <https://www.qt.io/qt-for-python>`_: Official Python bindings to the
+  `Qt GUI toolkit <https://wiki.qt.io/Qt_for_Python>`_.
+
+* `PyQt <https://riverbankcomputing.com/software/pyqt/>`_: Alternative
   Python bindings to Qt.
 
-* `Kivy <https://kivy.org>`__: A cross-platform GUI toolkit that supports
+* `Kivy <https://kivy.org>`_: A cross-platform GUI toolkit that supports
   desktop and mobile platforms.
 
-* `Toga <https://toga.readthedocs.io>`__: Part of the `BeeWare Project
-  <https://beeware.org>`__; supports desktop, mobile, web and console apps.
+* `Toga <https://toga.readthedocs.io>`_: Part of the `BeeWare Project
+  <https://beeware.org>`_; supports desktop, mobile, web and console apps.
 
-* `wxPython <https://www.wxpython.org>`__: A cross-platform toolkit that
+* `wxPython <https://wxpython.org>`_: A cross-platform toolkit that
   supports desktop operating systems.
 
+
+Advanced Topics
+===============
+
+.. _install-freethreaded-macos:
+
+Installing Free-threaded Binaries
+---------------------------------
+
+.. versionadded:: 3.13 (Experimental)
+
+.. note::
+
+   Everything described in this section is considered experimental,
+   and should be expected to change in future releases.
+
+The ``python.org`` :ref:`Python for macOS <getting-and-installing-macpython>`
+installer package can optionally install an additional build of
+Python |usemac_x_dot_y| that supports :pep:`703`, the experimental free-threading feature
+(running with the :term:`global interpreter lock` disabled).
+Check the release page on ``python.org`` for possible updated information.
+
+Because this feature is still considered experimental, the support for it
+is not installed by default. It is packaged as a separate install option,
+available by clicking the **Customize** button on the **Installation Type**
+step of the installer as described above.
+
+.. image:: mac_installer_09_custom_install_free_threaded.png
+
+If the box next to the **Free-threaded Python** package name is checked,
+a separate :file:`PythonT.framework` will also be installed
+alongside the normal :file:`Python.framework` in :file:`/Library/Frameworks`.
+This configuration allows a free-threaded Python |usemac_x_dot_y| build to co-exist
+on your system with a traditional (GIL only) Python |usemac_x_dot_y| build with
+minimal risk while installing or testing. This installation layout is itself
+experimental and is subject to change in future releases.
+
+Known cautions and limitations:
+
+- The **UNIX command-line tools** package, which is selected by default,
+  will install links in :file:`/usr/local/bin` for |usemac_python_x_dot_y_t_literal|,
+  the free-threaded interpreter, and |usemac_python_x_dot_y_t_literal_config|,
+  a configuration utility which may be useful for package builders.
+  Since :file:`/usr/local/bin` is typically included in your shell ``PATH``,
+  in most cases no changes to your ``PATH`` environment variables should
+  be needed to use |usemac_python_x_dot_y_t_literal|.
+
+- For this release, the **Shell profile updater** package and the
+  :file:`Update Shell Profile.command` in |usemac_applications_folder_version|
+  do not support the free-threaded package.
+
+- The free-threaded build and the traditional build have separate search
+  paths and separate :file:`site-packages` directories so, by default,
+  if you need a package available in both builds, it may need to be installed in both.
+  The free-threaded package will install a separate instance of :program:`pip` for use
+  with |usemac_python_x_dot_y_t_literal|.
+
+  - To install a package using :command:`pip` without a :command:`venv`:
+
+        |usemac_python_x_dot_y_t_literal| ``-m pip install <package_name>``
+
+- When working with multiple Python environments, it is usually safest and easiest
+  to :ref:`create and use virtual environments <tut-venv>`.
+  This can avoid possible command name conflicts and confusion about which Python is in use:
+
+      |usemac_python_x_dot_y_t_literal| ``-m venv <venv_name>``
+
+  then :command:`activate`.
+
+- To run a free-threaded version of IDLE:
+
+      |usemac_python_x_dot_y_t_literal| ``-m idlelib``
+
+- The interpreters in both builds respond to the same
+  :ref:`PYTHON environment variables <using-on-envvars>`
+  which may have unexpected results, for example, if you have ``PYTHONPATH``
+  set in a shell profile. If necessary, there are
+  :ref:`command line options <using-on-interface-options>` like ``-E``
+  to ignore these environment variables.
+
+- The free-threaded build links to the third-party shared libraries,
+  such as ``OpenSSL`` and ``Tk``, installed in the traditional framework.
+  This means that both builds also share one set of trust certificates
+  as installed by the :command:`Install Certificates.command` script,
+  thus it only needs to be run once.
+
+- If you cannot depend on the link in ``/usr/local/bin`` pointing to the
+  ``python.org`` free-threaded |usemac_python_x_dot_y_t_literal| (for example, if you want
+  to install your own version there or some other distribution does),
+  you can explicitly set your shell ``PATH`` environment variable to
+  include the ``PythonT`` framework ``bin`` directory:
+
+  .. code-block:: sh
+
+     export PATH="/Library/Frameworks/PythonT.framework/Versions/3.13/bin":"$PATH"
+
+  The traditional framework installation by default does something similar,
+  except for :file:`Python.framework`. Be aware that having both framework ``bin``
+  directories in ``PATH`` can lead to confusion if there are duplicate names
+  like ``python3.13`` in both; which one is actually used depends on the order
+  they appear in ``PATH``. The ``which python3.x`` or ``which python3.xt``
+  commands can show which path is being used. Using virtual environments
+  can help avoid such ambiguities. Another option might be to create
+  a shell :command:`alias` to the desired interpreter, like:
+
+  .. code-block:: sh
+
+     alias py3.13="/Library/Frameworks/Python.framework/Versions/3.13/bin/python3.13"
+     alias py3.13t="/Library/Frameworks/PythonT.framework/Versions/3.13/bin/python3.13t"
+
+Installing using the command line
+---------------------------------
+
+If you want to use automation to install the ``python.org`` installer package
+(rather than by using the familiar macOS :program:`Installer` GUI app),
+the macOS command line :command:`installer` utility lets you select non-default
+options, too. If you are not familiar with :command:`installer`, it can be
+somewhat cryptic (see :command:`man installer` for more information).
+As an example, the following shell snippet shows one way to do it,
+using the ``3.13.0b2`` release and selecting the free-threaded interpreter
+option:
+
+..  code-block:: sh
+
+    RELEASE="python-3.13.0b2-macos11.pkg"
+
+    # download installer pkg
+    curl -O https://www.python.org/ftp/python/3.13.0/${RELEASE}
+
+    # create installer choicechanges to customize the install:
+    #    enable the PythonTFramework-3.13 package
+    #    while accepting the other defaults (install all other packages)
+    cat > ./choicechanges.plist <<EOF
+    <?xml version="1.0" encoding="UTF-8"?>
+    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+    <plist version="1.0">
+    <array>
+            <dict>
+                    <key>attributeSetting</key>
+                    <integer>1</integer>
+                    <key>choiceAttribute</key>
+                    <string>selected</string>
+                    <key>choiceIdentifier</key>
+                    <string>org.python.Python.PythonTFramework-3.13</string>
+            </dict>
+    </array>
+    </plist>
+    EOF
+
+    sudo installer -pkg ./${RELEASE} -applyChoiceChangesXML ./choicechanges.plist -target /
+
+
+You can then test that both installer builds are now available with something like:
+
+..  code-block:: console
+
+    $ # test that the free-threaded interpreter was installed if the Unix Command Tools package was enabled
+    $ /usr/local/bin/python3.13t -VV
+    Python 3.13.0b2 experimental free-threading build (v3.13.0b2:3a83b172af, Jun  5 2024, 12:57:31) [Clang 15.0.0 (clang-1500.3.9.4)]
+    $ #    and the traditional interpreter
+    $ /usr/local/bin/python3.13 -VV
+    Python 3.13.0b2 (v3.13.0b2:3a83b172af, Jun  5 2024, 12:50:24) [Clang 15.0.0 (clang-1500.3.9.4)]
+    $ # test that they are also available without the prefix if /usr/local/bin is on $PATH
+    $ python3.13t -VV
+    Python 3.13.0b2 experimental free-threading build (v3.13.0b2:3a83b172af, Jun  5 2024, 12:57:31) [Clang 15.0.0 (clang-1500.3.9.4)]
+    $ python3.13 -VV
+    Python 3.13.0b2 (v3.13.0b2:3a83b172af, Jun  5 2024, 12:50:24) [Clang 15.0.0 (clang-1500.3.9.4)]
+
+.. note::
+
+   Current ``python.org`` installers only install to fixed locations like
+   :file:`/Library/Frameworks/`, :file:`/Applications`, and :file:`/usr/local/bin`.
+   You cannot use the :command:`installer` ``-domain`` option to install to
+   other locations.
+
 .. _distributing-python-applications-on-the-mac:
 
 Distributing Python Applications
-================================
+--------------------------------
 
 A range of tools exist for converting your Python code into a standalone
 distributable application:
@@ -180,22 +436,39 @@ distributable application:
 * :pypi:`py2app`: Supports creating macOS ``.app``
   bundles from a Python project.
 
-* `Briefcase <https://briefcase.readthedocs.io>`__: Part of the `BeeWare Project
-  <https://beeware.org>`__; a cross-platform packaging tool that supports
+* `Briefcase <https://briefcase.readthedocs.io>`_: Part of the `BeeWare Project
+  <https://beeware.org>`_; a cross-platform packaging tool that supports
   creation of ``.app`` bundles on macOS, as well as managing signing and
   notarization.
 
-* `PyInstaller <https://pyinstaller.org/>`__: A cross-platform packaging tool that creates
+* `PyInstaller <https://pyinstaller.org/>`_: A cross-platform packaging tool that creates
   a single file or folder as a distributable artifact.
 
-Other Resources
-===============
+App Store Compliance
+--------------------
+
+Apps submitted for distribution through the macOS App Store must pass Apple's
+app review process. This process includes a set of automated validation rules
+that inspect the submitted application bundle for problematic code.
 
-The Pythonmac-SIG mailing list is an excellent support resource for Python users
-and developers on the Mac:
+The Python standard library contains some code that is known to violate these
+automated rules. While these violations appear to be false positives, Apple's
+review rules cannot be challenged. Therefore, it is necessary to modify the
+Python standard library for an app to pass App Store review.
 
-https://www.python.org/community/sigs/current/pythonmac-sig/
+The Python source tree contains
+:source:`a patch file <Mac/Resources/app-store-compliance.patch>` that will remove
+all code that is known to cause issues with the App Store review process. This
+patch is applied automatically when CPython is configured with the
+:option:`--with-app-store-compliance` option.
 
-Another useful resource is the MacPython wiki:
+This patch is not normally required to use CPython on a Mac; nor is it required
+if you are distributing an app *outside* the macOS App Store. It is *only*
+required if you are using the macOS App Store as a distribution channel.
+
+Other Resources
+===============
 
-https://wiki.python.org/moin/MacPython
+The `python.org Help page <https://www.python.org/about/help/>`_ has links to many useful resources.
+The `Pythonmac-SIG mailing list <https://www.python.org/community/sigs/current/pythonmac-sig/>`_
+is another support resource specifically for Python users and developers on the Mac.
diff --git a/Doc/using/mac_installer_01_introduction.png b/Doc/using/mac_installer_01_introduction.png
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diff --git a/Doc/using/unix.rst b/Doc/using/unix.rst
index 58838c28e6eb86..a2bcdab09a9282 100644
--- a/Doc/using/unix.rst
+++ b/Doc/using/unix.rst
@@ -17,12 +17,12 @@ On Linux
 
 Python comes preinstalled on most Linux distributions, and is available as a
 package on all others.  However there are certain features you might want to use
-that are not available on your distro's package.  You can easily compile the
+that are not available on your distro's package.  You can compile the
 latest version of Python from source.
 
-In the event that Python doesn't come preinstalled and isn't in the repositories as
-well, you can easily make packages for your own distro.  Have a look at the
-following links:
+In the event that the latest version of Python doesn't come preinstalled and isn't
+in the repositories as well, you can make packages for your own distro.  Have a
+look at the following links:
 
 .. seealso::
 
diff --git a/Doc/using/venv-create.inc b/Doc/using/venv-create.inc
deleted file mode 100644
index 354eb1541ceac2..00000000000000
--- a/Doc/using/venv-create.inc
+++ /dev/null
@@ -1,121 +0,0 @@
-Creation of :ref:`virtual environments <venv-def>` is done by executing the
-command ``venv``::
-
-    python -m venv /path/to/new/virtual/environment
-
-Running this command creates the target directory (creating any parent
-directories that don't exist already) and places a ``pyvenv.cfg`` file in it
-with a ``home`` key pointing to the Python installation from which the command
-was run (a common name for the target directory is ``.venv``).  It also creates
-a ``bin`` (or ``Scripts`` on Windows) subdirectory containing a copy/symlink
-of the Python binary/binaries (as appropriate for the platform or arguments
-used at environment creation time). It also creates an (initially empty)
-``lib/pythonX.Y/site-packages`` subdirectory (on Windows, this is
-``Lib\site-packages``). If an existing directory is specified, it will be
-re-used.
-
-.. versionchanged:: 3.5
-   The use of ``venv`` is now recommended for creating virtual environments.
-
-.. deprecated:: 3.6
-   ``pyvenv`` was the recommended tool for creating virtual environments for
-   Python 3.3 and 3.4, and is
-   :ref:`deprecated in Python 3.6 <whatsnew36-venv>`.
-
-.. highlight:: none
-
-On Windows, invoke the ``venv`` command as follows::
-
-    c:\>Python35\python -m venv c:\path\to\myenv
-
-Alternatively, if you configured the ``PATH`` and ``PATHEXT`` variables for
-your :ref:`Python installation <using-on-windows>`::
-
-    c:\>python -m venv c:\path\to\myenv
-
-The command, if run with ``-h``, will show the available options::
-
-   usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
-               [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
-               [--without-scm-ignore-file]
-               ENV_DIR [ENV_DIR ...]
-
-   Creates virtual Python environments in one or more target directories.
-
-   positional arguments:
-   ENV_DIR               A directory to create the environment in.
-
-   options:
-   -h, --help            show this help message and exit
-   --system-site-packages
-                           Give the virtual environment access to the system
-                           site-packages dir.
-   --symlinks            Try to use symlinks rather than copies, when
-                           symlinks are not the default for the platform.
-   --copies              Try to use copies rather than symlinks, even when
-                           symlinks are the default for the platform.
-   --clear               Delete the contents of the environment directory if
-                           it already exists, before environment creation.
-   --upgrade             Upgrade the environment directory to use this
-                           version of Python, assuming Python has been upgraded
-                           in-place.
-   --without-pip         Skips installing or upgrading pip in the virtual
-                           environment (pip is bootstrapped by default)
-   --prompt PROMPT       Provides an alternative prompt prefix for this
-                           environment.
-   --upgrade-deps        Upgrade core dependencies (pip) to the latest
-                           version in PyPI
-   --without-scm-ignore-file
-                           Skips adding the default SCM ignore file to the
-                           environment directory (the default is a .gitignore
-                           file).
-
-   Once an environment has been created, you may wish to activate it, e.g. by
-   sourcing an activate script in its bin directory.
-
-.. versionchanged:: 3.13
-
-   ``--without-scm-ignore-file`` was added along with creating an ignore file
-   for ``git`` by default.
-
-.. versionchanged:: 3.12
-
-   ``setuptools`` is no longer a core venv dependency.
-
-.. versionchanged:: 3.9
-   Add ``--upgrade-deps`` option to upgrade pip + setuptools to the latest on PyPI
-
-.. versionchanged:: 3.4
-   Installs pip by default, added the ``--without-pip``  and ``--copies``
-   options
-
-.. versionchanged:: 3.4
-   In earlier versions, if the target directory already existed, an error was
-   raised, unless the ``--clear`` or ``--upgrade`` option was provided.
-
-.. note::
-   While symlinks are supported on Windows, they are not recommended. Of
-   particular note is that double-clicking ``python.exe`` in File Explorer
-   will resolve the symlink eagerly and ignore the virtual environment.
-
-.. note::
-   On Microsoft Windows, it may be required to enable the ``Activate.ps1``
-   script by setting the execution policy for the user. You can do this by
-   issuing the following PowerShell command:
-
-   PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
-
-   See `About Execution Policies
-   <https://go.microsoft.com/fwlink/?LinkID=135170>`_
-   for more information.
-
-The created ``pyvenv.cfg`` file also includes the
-``include-system-site-packages`` key, set to ``true`` if ``venv`` is
-run with the ``--system-site-packages`` option, ``false`` otherwise.
-
-Unless the ``--without-pip`` option is given, :mod:`ensurepip` will be
-invoked to bootstrap ``pip`` into the virtual environment.
-
-Multiple paths can be given to ``venv``, in which case an identical virtual
-environment will be created, according to the given options, at each provided
-path.
diff --git a/Doc/using/windows.rst b/Doc/using/windows.rst
index ef98d32e8674ec..63ce7f5d4ffb52 100644
--- a/Doc/using/windows.rst
+++ b/Doc/using/windows.rst
@@ -434,7 +434,7 @@ When writing to the Windows Registry, the following behaviors exist:
 For more detail on the technical basis for these limitations, please consult
 Microsoft's documentation on packaged full-trust apps, currently available at
 `docs.microsoft.com/en-us/windows/msix/desktop/desktop-to-uwp-behind-the-scenes
-<https://docs.microsoft.com/en-us/windows/msix/desktop/desktop-to-uwp-behind-the-scenes>`_
+<https://learn.microsoft.com/windows/msix/desktop/desktop-to-uwp-behind-the-scenes>`_
 
 
 .. _windows-nuget:
@@ -535,7 +535,7 @@ dependents, such as Idle), pip and the Python documentation are not included.
 .. note::
 
     The embedded distribution does not include the `Microsoft C Runtime
-    <https://docs.microsoft.com/en-US/cpp/windows/latest-supported-vc-redist#visual-studio-2015-2017-2019-and-2022>`_ and it is
+    <https://learn.microsoft.com/cpp/windows/latest-supported-vc-redist#visual-studio-2015-2017-2019-and-2022>`_ and it is
     the responsibility of the application installer to provide this. The
     runtime may have already been installed on a user's system previously or
     automatically via Windows Update, and can be detected by finding
@@ -608,7 +608,7 @@ key features:
     Popular scientific modules (such as numpy, scipy and pandas) and the
     ``conda`` package manager.
 
-`Enthought Deployment Manager <https://www.enthought.com/edm/>`_
+`Enthought Deployment Manager <https://assets.enthought.com/downloads/edm/>`_
     "The Next Generation Python Environment and Package Manager".
 
     Previously Enthought provided Canopy, but it `reached end of life in 2016
@@ -678,13 +678,13 @@ System variables, you need non-restricted access to your machine
 
 .. seealso::
 
-    https://docs.microsoft.com/en-us/windows/win32/procthread/environment-variables
+    https://learn.microsoft.com/windows/win32/procthread/environment-variables
       Overview of environment variables on Windows
 
-    https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/set_1
+    https://learn.microsoft.com/windows-server/administration/windows-commands/set_1
       The ``set`` command, for temporarily modifying environment variables
 
-    https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/setx
+    https://learn.microsoft.com/windows-server/administration/windows-commands/setx
       The ``setx`` command, for permanently modifying environment variables
 
 
@@ -837,8 +837,8 @@ The short form of the argument (``-3``) only ever selects from core Python
 releases, and not other distributions. However, the longer form (``-V:3``) will
 select from any.
 
-The Company is matched on the full string, case-insenitive. The Tag is matched
-oneither the full string, or a prefix, provided the next character is a dot or a
+The Company is matched on the full string, case-insensitive. The Tag is matched
+on either the full string, or a prefix, provided the next character is a dot or a
 hyphen. This allows ``-V:3.1`` to match ``3.1-32``, but not ``3.10``. Tags are
 sorted using numerical ordering (``3.10`` is newer than ``3.1``), but are
 compared using text (``-V:3.01`` does not match ``3.1``).
@@ -1290,13 +1290,13 @@ is a collection of modules for advanced Windows-specific support.  This includes
 utilities for:
 
 * `Component Object Model
-  <https://docs.microsoft.com/en-us/windows/win32/com/component-object-model--com--portal>`_
+  <https://learn.microsoft.com/windows/win32/com/component-object-model--com--portal>`_
   (COM)
 * Win32 API calls
 * Registry
 * Event log
 * `Microsoft Foundation Classes
-  <https://docs.microsoft.com/en-us/cpp/mfc/mfc-desktop-applications>`_
+  <https://learn.microsoft.com/cpp/mfc/mfc-desktop-applications>`_
   (MFC) user interfaces
 
 `PythonWin <https://web.archive.org/web/20060524042422/
@@ -1305,7 +1305,7 @@ shipped with PyWin32.  It is an embeddable IDE with a built-in debugger.
 
 .. seealso::
 
-   `Win32 How Do I...? <http://timgolden.me.uk/python/win32_how_do_i.html>`_
+   `Win32 How Do I...? <https://timgolden.me.uk/python/win32_how_do_i.html>`_
       by Tim Golden
 
    `Python and COM <https://www.boddie.org.uk/python/COM.html>`_
diff --git a/Doc/whatsnew/2.1.rst b/Doc/whatsnew/2.1.rst
index b4002f06e92adc..f23f27c994d717 100644
--- a/Doc/whatsnew/2.1.rst
+++ b/Doc/whatsnew/2.1.rst
@@ -443,8 +443,8 @@ Python syntax::
    f.grammar = "A ::= B (C D)*"
 
 The dictionary containing attributes can be accessed as the function's
-:attr:`~object.__dict__`. Unlike the :attr:`~object.__dict__` attribute of class instances, in
-functions you can actually assign a new dictionary to :attr:`~object.__dict__`, though
+:attr:`~function.__dict__`. Unlike the :attr:`~type.__dict__` attribute of class instances, in
+functions you can actually assign a new dictionary to :attr:`~function.__dict__`, though
 the new value is restricted to a regular Python dictionary; you *can't* be
 tricky and set it to a :class:`!UserDict` instance, or any other random object
 that behaves like a mapping.
@@ -644,9 +644,9 @@ New and Improved Modules
   lists the function arguments and the local variables for each frame.
 
 * Various functions in the :mod:`time` module, such as :func:`~time.asctime` and
-  :func:`~time.localtime`, require a floating point argument containing the time in
+  :func:`~time.localtime`, require a floating-point argument containing the time in
   seconds since the epoch.  The most common use of these functions is to work with
-  the current time, so the floating point argument has been made optional; when a
+  the current time, so the floating-point argument has been made optional; when a
   value isn't provided, the current time will be used.  For example, log file
   entries usually need a string containing the current time; in Python 2.1,
   ``time.asctime()`` can be used, instead of the lengthier
diff --git a/Doc/whatsnew/2.2.rst b/Doc/whatsnew/2.2.rst
index e6c13f957b8d54..856be5ecfa56ad 100644
--- a/Doc/whatsnew/2.2.rst
+++ b/Doc/whatsnew/2.2.rst
@@ -171,7 +171,7 @@ attributes of their own:
 
 * :attr:`~definition.__name__` is the attribute's name.
 
-* :attr:`!__doc__` is the attribute's docstring.
+* :attr:`~definition.__doc__` is the attribute's docstring.
 
 * ``__get__(object)`` is a method that retrieves the attribute value from
   *object*.
@@ -186,7 +186,8 @@ are::
    descriptor = obj.__class__.x
    descriptor.__get__(obj)
 
-For methods, :meth:`!descriptor.__get__` returns a temporary object that's
+For methods, :meth:`descriptor.__get__ <object.__get__>` returns a temporary
+object that's
 callable, and wraps up the instance and the method to be called on it. This is
 also why static methods and class methods are now possible; they have
 descriptors that wrap up just the method, or the method and the class.  As a
@@ -1062,7 +1063,7 @@ code, none of the changes described here will affect you very much.
   simply been changed to use the new C-level interface.  (Contributed by Fred L.
   Drake, Jr.)
 
-* Another low-level API, primarily of interest to implementors of Python
+* Another low-level API, primarily of interest to implementers of Python
   debuggers and development tools, was added. :c:func:`PyInterpreterState_Head` and
   :c:func:`PyInterpreterState_Next` let a caller walk through all the existing
   interpreter objects; :c:func:`PyInterpreterState_ThreadHead` and
@@ -1249,7 +1250,7 @@ Some of the more notable changes are:
 
 * The :func:`pow` built-in function no longer supports 3 arguments when
   floating-point numbers are supplied. ``pow(x, y, z)`` returns ``(x**y) % z``,
-  but this is never useful for floating point numbers, and the final result varies
+  but this is never useful for floating-point numbers, and the final result varies
   unpredictably depending on the platform.  A call such as ``pow(2.0, 8.0, 7.0)``
   will now raise a :exc:`TypeError` exception.
 
diff --git a/Doc/whatsnew/2.3.rst b/Doc/whatsnew/2.3.rst
index 8adf36e316c6fb..ac463f82cfb8ca 100644
--- a/Doc/whatsnew/2.3.rst
+++ b/Doc/whatsnew/2.3.rst
@@ -1113,10 +1113,10 @@ Here are all of the changes that Python 2.3 makes to the core Python language.
      <type '_socket.socket'>
 
 * One of the noted incompatibilities between old- and new-style classes has been
-  removed: you can now assign to the :attr:`~definition.__name__` and :attr:`~class.__bases__`
+  removed: you can now assign to the :attr:`~type.__name__` and :attr:`~type.__bases__`
   attributes of new-style classes.  There are some restrictions on what can be
-  assigned to :attr:`~class.__bases__` along the lines of those relating to assigning to
-  an instance's :attr:`~instance.__class__` attribute.
+  assigned to :attr:`!__bases__` along the lines of those relating to assigning to
+  an instance's :attr:`~object.__class__` attribute.
 
 .. ======================================================================
 
@@ -1382,7 +1382,7 @@ complete list of changes, or look through the CVS logs for all the details.
   In Python 2.4, the default will change to always returning floats.
 
   Application developers should enable this feature only if all their libraries
-  work properly when confronted with floating point time stamps, or if they use
+  work properly when confronted with floating-point time stamps, or if they use
   the tuple API. If used, the feature should be activated on an application level
   instead of trying to enable it on a per-use basis.
 
@@ -1925,8 +1925,8 @@ Changes to Python's build process and to the C API include:
   dependence on a system version or local installation of Expat.
 
 * If you dynamically allocate type objects in your extension, you should be
-  aware of a change in the rules relating to the :attr:`!__module__` and
-  :attr:`~definition.__name__` attributes.  In summary, you will want to ensure the type's
+  aware of a change in the rules relating to the :attr:`~type.__module__` and
+  :attr:`~type.__name__` attributes.  In summary, you will want to ensure the type's
   dictionary contains a ``'__module__'`` key; making the module name the part of
   the type name leading up to the final period will no longer have the desired
   effect.  For more detail, read the API reference documentation or the  source.
diff --git a/Doc/whatsnew/2.4.rst b/Doc/whatsnew/2.4.rst
index 7e235d4370edaa..7628cfefe0ec96 100644
--- a/Doc/whatsnew/2.4.rst
+++ b/Doc/whatsnew/2.4.rst
@@ -684,11 +684,11 @@ includes a quick-start tutorial and a reference.
       Written by Facundo Batista and implemented by Facundo Batista, Eric Price,
       Raymond Hettinger, Aahz, and Tim Peters.
 
-   http://www.lahey.com/float.htm
+   `http://www.lahey.com/float.htm <https://web.archive.org/web/20230604072523/http://www.lahey.com/float.htm>`__
       The article uses Fortran code to illustrate many of the problems that
       floating-point inaccuracy can cause.
 
-   http://speleotrove.com/decimal/
+   https://speleotrove.com/decimal/
       A description of a decimal-based representation.  This representation is being
       proposed as a standard, and underlies the new Python decimal type.  Much of this
       material was written by Mike Cowlishaw, designer of the Rexx language.
@@ -757,7 +757,7 @@ API that perform ASCII-only conversions, ignoring the locale setting:
   :c:expr:`double` to an ASCII string.
 
 The code for these functions came from the GLib library
-(https://developer-old.gnome.org/glib/2.26/), whose developers kindly
+(`https://developer-old.gnome.org/glib/2.26/ <http://web.archive.org/web/20210306104320/https://developer.gnome.org/glib/2.26/>`__), whose developers kindly
 relicensed the relevant functions and donated them to the Python Software
 Foundation.  The :mod:`locale` module  can now change the numeric locale,
 letting extensions such as GTK+  produce the correct results.
diff --git a/Doc/whatsnew/2.5.rst b/Doc/whatsnew/2.5.rst
index 2ae26e7a106a0b..3430ac8668e280 100644
--- a/Doc/whatsnew/2.5.rst
+++ b/Doc/whatsnew/2.5.rst
@@ -1724,7 +1724,7 @@ attribute of the function object to  change this::
 :mod:`ctypes` also provides a wrapper for Python's C API  as the
 ``ctypes.pythonapi`` object.  This object does *not*  release the global
 interpreter lock before calling a function, because the lock must be held when
-calling into the interpreter's code.   There's a :class:`py_object()` type
+calling into the interpreter's code.   There's a :class:`~ctypes.py_object` type
 constructor that will create a  :c:expr:`PyObject *` pointer.  A simple usage::
 
    import ctypes
@@ -1734,7 +1734,7 @@ constructor that will create a  :c:expr:`PyObject *` pointer.  A simple usage::
              ctypes.py_object("abc"),  ctypes.py_object(1))
    # d is now {'abc', 1}.
 
-Don't forget to use :class:`py_object()`; if it's omitted you end  up with a
+Don't forget to use :func:`~ctypes.py_object`; if it's omitted you end  up with a
 segmentation fault.
 
 :mod:`ctypes` has been around for a while, but people still write  and
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index fc2de7124859a8..fdccfb7deb1ed7 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -502,12 +502,12 @@ Python's :option:`-m` switch allows running a module as a script.
 When you ran a module that was located inside a package, relative
 imports didn't work correctly.
 
-The fix for Python 2.6 adds a :attr:`__package__` attribute to
-modules.  When this attribute is present, relative imports will be
+The fix for Python 2.6 adds a :attr:`module.__package__` attribute.
+When this attribute is present, relative imports will be
 relative to the value of this attribute instead of the
-:attr:`__name__` attribute.
+:attr:`~module.__name__` attribute.
 
-PEP 302-style importers can then set :attr:`__package__` as necessary.
+PEP 302-style importers can then set :attr:`~module.__package__` as necessary.
 The :mod:`runpy` module that implements the :option:`-m` switch now
 does this, so relative imports will now work correctly in scripts
 running from inside a package.
@@ -1453,7 +1453,7 @@ that will be the numerator and denominator of the resulting fraction. ::
     Fraction(5, 3)
 
 For converting floating-point numbers to rationals,
-the float type now has an :meth:`as_integer_ratio()` method that returns
+the float type now has an :meth:`as_integer_ratio` method that returns
 the numerator and denominator for a fraction that evaluates to the same
 floating-point value::
 
@@ -2273,7 +2273,7 @@ changes, or look through the Subversion logs for all the details.
   (Contributed by Guido van Rossum from work for Google App Engine;
   :issue:`3487`.)
 
-* The :mod:`rlcompleter` module's :meth:`Completer.complete()` method
+* The :mod:`rlcompleter` module's :meth:`Completer.complete` method
   will now ignore exceptions triggered while evaluating a name.
   (Fixed by Lorenz Quack; :issue:`2250`.)
 
@@ -2566,7 +2566,7 @@ changes, or look through the Subversion logs for all the details.
     :meth:`tracer`, and :meth:`speed` methods.
   * The ability to set new shapes for the turtle, and to
     define a new coordinate system.
-  * Turtles now have an :meth:`undo()` method that can roll back actions.
+  * Turtles now have an :meth:`undo` method that can roll back actions.
   * Simple support for reacting to input events such as mouse and keyboard
     activity, making it possible to write simple games.
   * A :file:`turtle.cfg` file can be used to customize the starting appearance
@@ -3051,7 +3051,7 @@ Changes to Python's build process and to the C API include:
 
 * Several functions return information about the platform's
   floating-point support.  :c:func:`PyFloat_GetMax` returns
-  the maximum representable floating point value,
+  the maximum representable floating-point value,
   and :c:func:`PyFloat_GetMin` returns the minimum
   positive value.  :c:func:`PyFloat_GetInfo` returns an object
   containing more information from the :file:`float.h` file, such as
diff --git a/Doc/whatsnew/2.7.rst b/Doc/whatsnew/2.7.rst
index 031777b9cf6413..0e4dee0bd24fb2 100644
--- a/Doc/whatsnew/2.7.rst
+++ b/Doc/whatsnew/2.7.rst
@@ -291,7 +291,7 @@ modules.
   configuration files can now be read, modified, and then written back
   in their original order.
 
-* The :meth:`~collections.somenamedtuple._asdict()` method for
+* The :meth:`~collections.somenamedtuple._asdict` method for
   :func:`collections.namedtuple` now returns an ordered dictionary with the
   values appearing in the same order as the underlying tuple indices.
 
@@ -1198,7 +1198,7 @@ changes, or look through the Subversion logs for all the details.
   of the operands.  Previously such comparisons would fall back to
   Python's default rules for comparing objects, which produced arbitrary
   results based on their type.  Note that you still cannot combine
-  :class:`!Decimal` and floating-point in other operations such as addition,
+  :class:`!Decimal` and floating point in other operations such as addition,
   since you should be explicitly choosing how to convert between float and
   :class:`!Decimal`.  (Fixed by Mark Dickinson; :issue:`2531`.)
 
@@ -1548,7 +1548,7 @@ changes, or look through the Subversion logs for all the details.
   *ciphers* argument that's a string listing the encryption algorithms
   to be allowed; the format of the string is described
   `in the OpenSSL documentation
-  <https://www.openssl.org/docs/man1.0.2/man1/ciphers.html>`__.
+  <https://docs.openssl.org/1.0.2/man1/ciphers/>`__.
   (Added by Antoine Pitrou; :issue:`8322`.)
 
   Another change makes the extension load all of OpenSSL's ciphers and
@@ -1738,7 +1738,7 @@ New module: importlib
 
 Python 3.1 includes the :mod:`importlib` package, a re-implementation
 of the logic underlying Python's :keyword:`import` statement.
-:mod:`importlib` is useful for implementors of Python interpreters and
+:mod:`importlib` is useful for implementers of Python interpreters and
 to users who wish to write new importers that can participate in the
 import process.  Python 2.7 doesn't contain the complete
 :mod:`importlib` package, but instead has a tiny subset that contains
@@ -2680,14 +2680,12 @@ automatic ``PATH`` modifications to have ``pip`` available from the command
 line by default, otherwise it can still be accessed through the Python
 launcher for Windows as ``py -m pip``.
 
-As `discussed in the PEP`__, platform packagers may choose not to install
+As :pep:`discussed in the PEP <0477#disabling-ensurepip-by-downstream-distributors>`,
+platform packagers may choose not to install
 these commands by default, as long as, when invoked, they provide clear and
 simple directions on how to install them on that platform (usually using
 the system package manager).
 
-__ https://peps.python.org/pep-0477/#disabling-ensurepip-by-downstream-distributors
-
-
 Documentation Changes
 ~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/Doc/whatsnew/3.0.rst b/Doc/whatsnew/3.0.rst
index 888e6279754fc2..26e62080e819d8 100644
--- a/Doc/whatsnew/3.0.rst
+++ b/Doc/whatsnew/3.0.rst
@@ -150,8 +150,8 @@ Some well-known APIs no longer return lists:
   sorted(d)`` instead (this works in Python 2.5 too and is just
   as efficient).
 
-* Also, the :meth:`dict.iterkeys`, :meth:`dict.iteritems` and
-  :meth:`dict.itervalues` methods are no longer supported.
+* Also, the :meth:`!dict.iterkeys`, :meth:`!dict.iteritems` and
+  :meth:`!dict.itervalues` methods are no longer supported.
 
 * :func:`map` and :func:`filter` return iterators.  If you really need
   a list and the input sequences are all of equal length, a quick
@@ -170,7 +170,7 @@ Some well-known APIs no longer return lists:
   :func:`itertools.zip_longest`, e.g. ``map(func, *sequences)`` becomes
   ``list(map(func, itertools.zip_longest(*sequences)))``.
 
-* :func:`range` now behaves like :func:`xrange` used to behave, except
+* :func:`range` now behaves like :func:`!xrange` used to behave, except
   it works with values of arbitrary size.  The latter no longer
   exists.
 
@@ -192,33 +192,33 @@ Python 3.0 has simplified the rules for ordering comparisons:
   operators: objects of different incomparable types always compare
   unequal to each other.
 
-* :meth:`builtin.sorted` and :meth:`list.sort` no longer accept the
+* :meth:`sorted` and :meth:`list.sort` no longer accept the
   *cmp* argument providing a comparison function.  Use the *key*
   argument instead. N.B. the *key* and *reverse* arguments are now
   "keyword-only".
 
-* The :func:`cmp` function should be treated as gone, and the :meth:`__cmp__`
-  special method is no longer supported.  Use :meth:`__lt__` for sorting,
-  :meth:`__eq__` with :meth:`__hash__`, and other rich comparisons as needed.
-  (If you really need the :func:`cmp` functionality, you could use the
+* The :func:`!cmp` function should be treated as gone, and the :meth:`!__cmp__`
+  special method is no longer supported.  Use :meth:`~object.__lt__` for sorting,
+  :meth:`~object.__eq__` with :meth:`~object.__hash__`, and other rich comparisons as needed.
+  (If you really need the :func:`!cmp` functionality, you could use the
   expression ``(a > b) - (a < b)`` as the equivalent for ``cmp(a, b)``.)
 
 Integers
 --------
 
-* :pep:`237`: Essentially, :class:`long` renamed to :class:`int`.
+* :pep:`237`: Essentially, :class:`!long` renamed to :class:`int`.
   That is, there is only one built-in integral type, named
-  :class:`int`; but it behaves mostly like the old :class:`long` type.
+  :class:`int`; but it behaves mostly like the old :class:`!long` type.
 
 * :pep:`238`: An expression like ``1/2`` returns a float.  Use
   ``1//2`` to get the truncating behavior.  (The latter syntax has
   existed for years, at least since Python 2.2.)
 
-* The :data:`sys.maxint` constant was removed, since there is no
+* The :data:`!sys.maxint` constant was removed, since there is no
   longer a limit to the value of integers.  However, :data:`sys.maxsize`
   can be used as an integer larger than any practical list or string
   index.  It conforms to the implementation's "natural" integer size
-  and is typically the same as :data:`sys.maxint` in previous releases
+  and is typically the same as :data:`!sys.maxint` in previous releases
   on the same platform (assuming the same build options).
 
 * The :func:`repr` of a long integer doesn't include the trailing ``L``
@@ -251,7 +251,7 @@ changed.
   that uses Unicode, encodings or binary data most likely has to
   change.  The change is for the better, as in the 2.x world there
   were numerous bugs having to do with mixing encoded and unencoded
-  text.  To be prepared in Python 2.x, start using :class:`unicode`
+  text.  To be prepared in Python 2.x, start using :class:`!unicode`
   for all unencoded text, and :class:`str` for binary or encoded data
   only.  Then the ``2to3`` tool will do most of the work for you.
 
@@ -269,7 +269,7 @@ changed.
   separate *mutable* type to hold buffered binary data,
   :class:`bytearray`.  Nearly all APIs that accept :class:`bytes` also
   accept :class:`bytearray`.  The mutable API is based on
-  :class:`collections.MutableSequence`.
+  :class:`collections.MutableSequence <collections.abc.MutableSequence>`.
 
 * All backslashes in raw string literals are interpreted literally.
   This means that ``'\U'`` and ``'\u'`` escapes in raw strings are not
@@ -278,11 +278,11 @@ changed.
   single "euro" character.  (Of course, this change only affects raw
   string literals; the euro character is ``'\u20ac'`` in Python 3.0.)
 
-* The built-in :class:`basestring` abstract type was removed.  Use
+* The built-in :class:`!basestring` abstract type was removed.  Use
   :class:`str` instead.  The :class:`str` and :class:`bytes` types
   don't have functionality enough in common to warrant a shared base
   class.  The ``2to3`` tool (see below) replaces every occurrence of
-  :class:`basestring` with :class:`str`.
+  :class:`!basestring` with :class:`str`.
 
 * Files opened as text files (still the default mode for :func:`open`)
   always use an encoding to map between strings (in memory) and bytes
@@ -357,8 +357,8 @@ New Syntax
   provides a standardized way of annotating a function's parameters
   and return value.  There are no semantics attached to such
   annotations except that they can be introspected at runtime using
-  the :attr:`__annotations__` attribute.  The intent is to encourage
-  experimentation through metaclasses, decorators or frameworks.
+  the :attr:`!__annotations__` attribute.  The intent is to
+  encourage experimentation through metaclasses, decorators or frameworks.
 
 * :pep:`3102`: Keyword-only arguments.  Named parameters occurring
   after ``*args`` in the parameter list *must* be specified using
@@ -428,7 +428,7 @@ Changed Syntax
     class C(metaclass=M):
         ...
 
-  The module-global :data:`__metaclass__` variable is no longer
+  The module-global :data:`!__metaclass__` variable is no longer
   supported.  (It was a crutch to make it easier to default to
   new-style classes without deriving every class from
   :class:`object`.)
@@ -522,19 +522,19 @@ consulted for longer descriptions.
   *encoding*, *errors*, *newline* and *closefd*.  Also note that an
   invalid *mode* argument now raises :exc:`ValueError`, not
   :exc:`IOError`.  The binary file object underlying a text file
-  object can be accessed as :attr:`f.buffer` (but beware that the
+  object can be accessed as :attr:`!f.buffer` (but beware that the
   text object maintains a buffer of itself in order to speed up
   the encoding and decoding operations).
 
-* :ref:`pep-3118`.  The old builtin :func:`buffer` is now really gone;
+* :ref:`pep-3118`.  The old builtin :func:`!buffer` is now really gone;
   the new builtin :func:`memoryview` provides (mostly) similar
   functionality.
 
 * :ref:`pep-3119`.  The :mod:`abc` module and the ABCs defined in the
   :mod:`collections` module plays a somewhat more prominent role in
   the language now, and built-in collection types like :class:`dict`
-  and :class:`list` conform to the :class:`collections.MutableMapping`
-  and :class:`collections.MutableSequence` ABCs, respectively.
+  and :class:`list` conform to the :class:`collections.MutableMapping <collections.abc.MutableMapping>`
+  and :class:`collections.MutableSequence <collections.abc.MutableSequence>` ABCs, respectively.
 
 * :ref:`pep-3127`.  As mentioned above, the new octal literal
   notation is the only one supported, and binary literals have been
@@ -612,7 +612,7 @@ review:
     :mod:`!CGIHTTPServer`, :mod:`!SimpleHTTPServer`, :mod:`!Cookie`,
     :mod:`!cookielib`).
 
-  * :mod:`tkinter` (all :mod:`Tkinter`-related modules except
+  * :mod:`tkinter` (all ``Tkinter``-related modules except
     :mod:`turtle`).  The target audience of :mod:`turtle` doesn't
     really care about :mod:`tkinter`.  Also note that as of Python
     2.6, the functionality of :mod:`turtle` has been greatly enhanced.
@@ -628,47 +628,47 @@ Some other changes to standard library modules, not covered by
 
 * Killed :mod:`!sets`.  Use the built-in :func:`set` class.
 
-* Cleanup of the :mod:`sys` module: removed :func:`sys.exitfunc`,
-  :func:`sys.exc_clear`, :data:`sys.exc_type`, :data:`sys.exc_value`,
-  :data:`sys.exc_traceback`.  (Note that :data:`sys.last_type`
+* Cleanup of the :mod:`sys` module: removed :func:`!sys.exitfunc`,
+  :func:`!sys.exc_clear`, :data:`!sys.exc_type`, :data:`!sys.exc_value`,
+  :data:`!sys.exc_traceback`.  (Note that :data:`sys.last_type`
   etc. remain.)
 
-* Cleanup of the :class:`array.array` type: the :meth:`read` and
-  :meth:`write` methods are gone; use :meth:`fromfile` and
-  :meth:`tofile` instead.  Also, the ``'c'`` typecode for array is
+* Cleanup of the :class:`array.array` type: the :meth:`!read` and
+  :meth:`!write` methods are gone; use :meth:`~array.array.fromfile` and
+  :meth:`~array.array.tofile` instead.  Also, the ``'c'`` typecode for array is
   gone -- use either ``'b'`` for bytes or ``'u'`` for Unicode
   characters.
 
 * Cleanup of the :mod:`operator` module: removed
-  :func:`sequenceIncludes` and :func:`isCallable`.
+  :func:`!sequenceIncludes` and :func:`!isCallable`.
 
 * Cleanup of the :mod:`!thread` module: :func:`!acquire_lock` and
   :func:`!release_lock` are gone; use :meth:`~threading.Lock.acquire` and
   :meth:`~threading.Lock.release` instead.
 
-* Cleanup of the :mod:`random` module: removed the :func:`jumpahead` API.
+* Cleanup of the :mod:`random` module: removed the :func:`!jumpahead` API.
 
 * The :mod:`!new` module is gone.
 
-* The functions :func:`os.tmpnam`, :func:`os.tempnam` and
-  :func:`os.tmpfile` have been removed in favor of the :mod:`tempfile`
+* The functions :func:`!os.tmpnam`, :func:`!os.tempnam` and
+  :func:`!os.tmpfile` have been removed in favor of the :mod:`tempfile`
   module.
 
 * The :mod:`tokenize` module has been changed to work with bytes.  The
   main entry point is now :func:`tokenize.tokenize`, instead of
   generate_tokens.
 
-* :data:`string.letters` and its friends (:data:`string.lowercase` and
-  :data:`string.uppercase`) are gone.  Use
+* :data:`!string.letters` and its friends (:data:`!string.lowercase` and
+  :data:`!string.uppercase`) are gone.  Use
   :data:`string.ascii_letters` etc. instead.  (The reason for the
-  removal is that :data:`string.letters` and friends had
+  removal is that :data:`!string.letters` and friends had
   locale-specific behavior, which is a bad idea for such
   attractively named global "constants".)
 
-* Renamed module :mod:`__builtin__` to :mod:`builtins` (removing the
-  underscores, adding an 's').  The :data:`__builtins__` variable
+* Renamed module :mod:`!__builtin__` to :mod:`builtins` (removing the
+  underscores, adding an 's').  The :data:`!__builtins__` variable
   found in most global namespaces is unchanged.  To modify a builtin,
-  you should use :mod:`builtins`, not :data:`__builtins__`!
+  you should use :mod:`builtins`, not :data:`!__builtins__`!
 
 
 :pep:`3101`: A New Approach To String Formatting
@@ -702,9 +702,9 @@ new powerful features added:
   idiom for handling all exceptions except for this latter category is
   to use :keyword:`except` :exc:`Exception`.
 
-* :exc:`StandardError` was removed.
+* :exc:`!StandardError` was removed.
 
-* Exceptions no longer behave as sequences.  Use the :attr:`args`
+* Exceptions no longer behave as sequences.  Use the :attr:`~BaseException.args`
   attribute instead.
 
 * :pep:`3109`: Raising exceptions.  You must now use :samp:`raise
@@ -765,20 +765,20 @@ Operators And Special Methods
   When referencing a method as a class attribute, you now get a plain
   function object.
 
-* :meth:`__getslice__`, :meth:`__setslice__` and :meth:`__delslice__`
+* :meth:`!__getslice__`, :meth:`!__setslice__` and :meth:`!__delslice__`
   were killed.  The syntax ``a[i:j]`` now translates to
-  ``a.__getitem__(slice(i, j))`` (or :meth:`__setitem__` or
-  :meth:`__delitem__`, when used as an assignment or deletion target,
+  ``a.__getitem__(slice(i, j))`` (or :meth:`~object.__setitem__` or
+  :meth:`~object.__delitem__`, when used as an assignment or deletion target,
   respectively).
 
 * :pep:`3114`: the standard :meth:`next` method has been renamed to
   :meth:`~iterator.__next__`.
 
-* The :meth:`__oct__` and :meth:`__hex__` special methods are removed
-  -- :func:`oct` and :func:`hex` use :meth:`__index__` now to convert
+* The :meth:`!__oct__` and :meth:`!__hex__` special methods are removed
+  -- :func:`oct` and :func:`hex` use :meth:`~object.__index__` now to convert
   the argument to an integer.
 
-* Removed support for :attr:`__members__` and :attr:`__methods__`.
+* Removed support for :attr:`!__members__` and :attr:`!__methods__`.
 
 * The function attributes named :attr:`!func_X` have been renamed to
   use the :attr:`!__X__` form, freeing up these names in the function
@@ -802,7 +802,7 @@ Builtins
   instance will automatically be chosen.  With arguments, the behavior
   of :func:`super` is unchanged.
 
-* :pep:`3111`: :func:`raw_input` was renamed to :func:`input`.  That
+* :pep:`3111`: :func:`!raw_input` was renamed to :func:`input`.  That
   is, the new :func:`input` function reads a line from
   :data:`sys.stdin` and returns it with the trailing newline stripped.
   It raises :exc:`EOFError` if the input is terminated prematurely.
@@ -820,31 +820,31 @@ Builtins
   argument and a value of the same type as ``x`` when called with two
   arguments.
 
-* Moved :func:`intern` to :func:`sys.intern`.
+* Moved :func:`!intern` to :func:`sys.intern`.
 
-* Removed: :func:`apply`.  Instead of ``apply(f, args)`` use
+* Removed: :func:`!apply`.  Instead of ``apply(f, args)`` use
   ``f(*args)``.
 
 * Removed :func:`callable`.  Instead of ``callable(f)`` you can use
-  ``isinstance(f, collections.Callable)``.  The :func:`operator.isCallable`
+  ``isinstance(f, collections.Callable)``.  The :func:`!operator.isCallable`
   function is also gone.
 
-* Removed :func:`coerce`.  This function no longer serves a purpose
+* Removed :func:`!coerce`.  This function no longer serves a purpose
   now that classic classes are gone.
 
-* Removed :func:`execfile`.  Instead of ``execfile(fn)`` use
+* Removed :func:`!execfile`.  Instead of ``execfile(fn)`` use
   ``exec(open(fn).read())``.
 
-* Removed the :class:`file` type.  Use :func:`open`.  There are now several
+* Removed the :class:`!file` type.  Use :func:`open`.  There are now several
   different kinds of streams that open can return in the :mod:`io` module.
 
-* Removed :func:`reduce`.  Use :func:`functools.reduce` if you really
+* Removed :func:`!reduce`.  Use :func:`functools.reduce` if you really
   need it; however, 99 percent of the time an explicit :keyword:`for`
   loop is more readable.
 
-* Removed :func:`reload`.  Use :func:`!imp.reload`.
+* Removed :func:`!reload`.  Use :func:`!imp.reload`.
 
-* Removed. :meth:`dict.has_key` -- use the :keyword:`in` operator
+* Removed. :meth:`!dict.has_key` -- use the :keyword:`in` operator
   instead.
 
 .. ======================================================================
diff --git a/Doc/whatsnew/3.1.rst b/Doc/whatsnew/3.1.rst
index 69b273e58385d2..b9606beb5f9ef9 100644
--- a/Doc/whatsnew/3.1.rst
+++ b/Doc/whatsnew/3.1.rst
@@ -205,9 +205,9 @@ Some smaller changes made to the core Python language are:
 
   (Contributed by Mark Dickinson; :issue:`4707`.)
 
-* Python now uses David Gay's algorithm for finding the shortest floating
-  point representation that doesn't change its value.  This should help
-  mitigate some of the confusion surrounding binary floating point
+* Python now uses David Gay's algorithm for finding the shortest floating-point
+  representation that doesn't change its value.  This should help
+  mitigate some of the confusion surrounding binary floating-point
   numbers.
 
   The significance is easily seen with a number like ``1.1`` which does not
@@ -215,7 +215,7 @@ Some smaller changes made to the core Python language are:
   equivalent, an expression like ``float('1.1')`` evaluates to the nearest
   representable value which is ``0x1.199999999999ap+0`` in hex or
   ``1.100000000000000088817841970012523233890533447265625`` in decimal. That
-  nearest value was and still is used in subsequent floating point
+  nearest value was and still is used in subsequent floating-point
   calculations.
 
   What is new is how the number gets displayed.  Formerly, Python used a
@@ -224,7 +224,7 @@ Some smaller changes made to the core Python language are:
   using 17 digits was that it relied on IEEE-754 guarantees to assure that
   ``eval(repr(1.1))`` would round-trip exactly to its original value.  The
   disadvantage is that many people found the output to be confusing (mistaking
-  intrinsic limitations of binary floating point representation as being a
+  intrinsic limitations of binary floating-point representation as being a
   problem with Python itself).
 
   The new algorithm for ``repr(1.1)`` is smarter and returns ``'1.1'``.
@@ -236,8 +236,8 @@ Some smaller changes made to the core Python language are:
   it does not change the underlying values.  So, it is still the case that
   ``1.1 + 2.2 != 3.3`` even though the representations may suggest otherwise.
 
-  The new algorithm depends on certain features in the underlying floating
-  point implementation.  If the required features are not found, the old
+  The new algorithm depends on certain features in the underlying floating-point
+  implementation.  If the required features are not found, the old
   algorithm will continue to be used.  Also, the text pickle protocols
   assure cross-platform portability by using the old algorithm.
 
@@ -550,7 +550,7 @@ Porting to Python 3.1
 This section lists previously described changes and other bugfixes
 that may require changes to your code:
 
-* The new floating point string representations can break existing doctests.
+* The new floating-point string representations can break existing doctests.
   For example::
 
     def e():
diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index b939ccd17903f2..e4699fbf8edaf7 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -1233,7 +1233,7 @@ also now un-stringize stringized annotations.
 itertools
 ---------
 
-Add :func:`itertools.pairwise()`.
+Add :func:`itertools.pairwise`.
 (Contributed by Raymond Hettinger in :issue:`38200`.)
 
 linecache
@@ -1245,14 +1245,14 @@ When a module does not define ``__loader__``, fall back to ``__spec__.loader``.
 os
 --
 
-Add :func:`os.cpu_count()` support for VxWorks RTOS.
+Add :func:`os.cpu_count` support for VxWorks RTOS.
 (Contributed by Peixing Xin in :issue:`41440`.)
 
 Add a new function :func:`os.eventfd` and related helpers to wrap the
 ``eventfd2`` syscall on Linux.
 (Contributed by Christian Heimes in :issue:`41001`.)
 
-Add :func:`os.splice()` that allows to move data between two file
+Add :func:`os.splice` that allows to move data between two file
 descriptors without copying between kernel address space and user
 address space, where one of the file descriptors must refer to a
 pipe. (Contributed by Pablo Galindo in :issue:`41625`.)
@@ -1292,7 +1292,7 @@ functions in the :mod:`os` module.
 platform
 --------
 
-Add :func:`platform.freedesktop_os_release()` to retrieve operation system
+Add :func:`platform.freedesktop_os_release` to retrieve operation system
 identification from `freedesktop.org os-release
 <https://www.freedesktop.org/software/systemd/man/os-release.html>`_ standard file.
 (Contributed by Christian Heimes in :issue:`28468`.)
diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst
index 7a74df330a86c7..d59f24406c9483 100644
--- a/Doc/whatsnew/3.11.rst
+++ b/Doc/whatsnew/3.11.rst
@@ -768,6 +768,21 @@ functools
   (Contributed by Yurii Karabas in :issue:`46014`.)
 
 
+.. _whatsnew311-gzip:
+
+gzip
+----
+
+* The :func:`gzip.compress` function is now faster when used with the
+  **mtime=0** argument as it delegates the compression entirely to a single
+  :func:`zlib.compress` operation. There is one side effect of this change: The
+  gzip file header contains an "OS" byte in its header. That was traditionally
+  always set to a value of 255 representing "unknown" by the :mod:`gzip`
+  module. Now, when using :func:`~gzip.compress` with **mtime=0**, it may be
+  set to a different value by the underlying zlib C library Python was linked
+  against.
+  (See :gh:`112346` for details on the side effect.)
+
 .. _whatsnew311-hashlib:
 
 hashlib
@@ -2017,8 +2032,8 @@ Removed C APIs are :ref:`listed separately <whatsnew311-c-api-removed>`.
   It was introduced in Python 3.4 but has been broken since Python 3.7.
   (Contributed by Inada Naoki in :issue:`23882`.)
 
-* Removed the undocumented private :meth:`!float.__set_format__()` method,
-  previously known as :meth:`!float.__setformat__()` in Python 3.7.
+* Removed the undocumented private :meth:`!float.__set_format__` method,
+  previously known as :meth:`!float.__setformat__` in Python 3.7.
   Its docstring said: "You probably don't want to use this function.
   It exists mainly to be used in Python's test suite."
   (Contributed by Victor Stinner in :issue:`46852`.)
@@ -2123,7 +2138,7 @@ Build Changes
     :issue:`45440` and :issue:`46640`.)
 
   * Support for `IEEE 754 <https://en.wikipedia.org/wiki/IEEE_754>`_
-    floating point numbers.
+    floating-point numbers.
     (Contributed by Victor Stinner in :issue:`46917`.)
 
 * The :c:macro:`!Py_NO_NAN` macro has been removed.
diff --git a/Doc/whatsnew/3.12.rst b/Doc/whatsnew/3.12.rst
index 8757311a484257..d2b0911ed627a0 100644
--- a/Doc/whatsnew/3.12.rst
+++ b/Doc/whatsnew/3.12.rst
@@ -59,7 +59,7 @@ Summary -- Release highlights
 .. This section singles out the most important changes in Python 3.12.
    Brevity is key.
 
-Python 3.12 is the latest stable release of the Python programming language,
+Python 3.12 is a stable release of the Python programming language,
 with a mix of changes to the language and the standard library.
 The library changes focus on cleaning up deprecated APIs, usability, and correctness.
 Of note, the :mod:`!distutils` package has been removed from the standard library.
@@ -154,7 +154,7 @@ Important deprecations, removals or restrictions:
   reducing the size of every :class:`str` object by at least 8 bytes.
 
 * :pep:`632`: Remove the :mod:`!distutils` package.
-  See `the migration guide <https://peps.python.org/pep-0632/#migration-advice>`_
+  See :pep:`the migration guide <0632#migration-advice>`
   for advice replacing the APIs it provided.
   The third-party `Setuptools <https://setuptools.pypa.io/en/latest/deprecated/distutils-legacy.html>`__
   package continues to provide :mod:`!distutils`,
@@ -359,7 +359,7 @@ create an interpreter with its own GIL:
    /* The new interpreter is now active in the current thread. */
 
 For further examples how to use the C-API for sub-interpreters with a
-per-interpreter GIL, see :source:`Modules/_xxsubinterpretersmodule.c`.
+per-interpreter GIL, see ``Modules/_xxsubinterpretersmodule.c``.
 
 (Contributed by Eric Snow in :gh:`104210`, etc.)
 
@@ -739,7 +739,7 @@ inspect
 itertools
 ---------
 
-* Add :class:`itertools.batched()` for collecting into even-sized
+* Add :func:`itertools.batched` for collecting into even-sized
   tuples where the last batch may be shorter than the rest.
   (Contributed by Raymond Hettinger in :gh:`98363`.)
 
@@ -1251,10 +1251,10 @@ Deprecated
     :exc:`DeprecationWarning` when it can detect being called from a
     multithreaded process. There has always been a fundamental incompatibility
     with the POSIX platform when doing so. Even if such code *appeared* to work.
-    We added the warning to to raise awareness as issues encounted by code doing
+    We added the warning to raise awareness as issues encountered by code doing
     this are becoming more frequent. See the :func:`os.fork` documentation for
     more details along with `this discussion on fork being incompatible with threads
-    <https://discuss.python.org/t/33555>`_ for *why* we're now surfacing this
+    <https://discuss.python.org/t/concerns-regarding-deprecation-of-fork-with-alive-threads/33555>`_ for *why* we're now surfacing this
     longstanding platform compatibility problem to developers.
 
   When this warning appears due to usage of :mod:`multiprocessing` or
@@ -1309,173 +1309,39 @@ Deprecated
   may be removed in a future version of Python. Use the single-arg versions
   of these functions instead. (Contributed by Ofey Chan in :gh:`89874`.)
 
-* :exc:`DeprecationWarning` is now raised when ``__package__`` on a
-  module differs from ``__spec__.parent`` (previously it was
-  :exc:`ImportWarning`).
+* :exc:`DeprecationWarning` is now raised when :attr:`~module.__package__` on a
+  module differs from
+  :attr:`__spec__.parent <importlib.machinery.ModuleSpec.parent>` (previously
+  it was :exc:`ImportWarning`).
   (Contributed by Brett Cannon in :gh:`65961`.)
 
-* Setting ``__package__`` or ``__cached__`` on a module is deprecated,
-  and will cease to be set or taken into consideration by the import system in Python 3.14.
-  (Contributed by Brett Cannon in :gh:`65961`.)
+* Setting :attr:`~module.__package__` or :attr:`~module.__cached__` on a
+  module is deprecated, and will cease to be set or taken into consideration by
+  the import system in Python 3.14. (Contributed by Brett Cannon in :gh:`65961`.)
 
 * The bitwise inversion operator (``~``) on bool is deprecated. It will throw an
-  error in Python 3.14. Use ``not`` for logical negation of bools instead.
+  error in Python 3.16. Use ``not`` for logical negation of bools instead.
   In the rare case that you really need the bitwise inversion of the underlying
   ``int``, convert to int explicitly: ``~int(x)``. (Contributed by Tim Hoffmann
   in :gh:`103487`.)
 
 * Accessing :attr:`~codeobject.co_lnotab` on code objects was deprecated in
   Python 3.10 via :pep:`626`,
-  but it only got a proper :exc:`DeprecationWarning` in 3.12,
-  therefore it will be removed in 3.14.
+  but it only got a proper :exc:`DeprecationWarning` in 3.12.
+  May be removed in 3.15.
   (Contributed by Nikita Sobolev in :gh:`101866`.)
 
-Pending Removal in Python 3.13
-------------------------------
-
-The following modules and APIs have been deprecated in earlier Python releases,
-and will be removed in Python 3.13.
-
-Modules (see :pep:`594`):
-
-* :mod:`!aifc`
-* :mod:`!audioop`
-* :mod:`!cgi`
-* :mod:`!cgitb`
-* :mod:`!chunk`
-* :mod:`!crypt`
-* :mod:`!imghdr`
-* :mod:`!mailcap`
-* :mod:`!msilib`
-* :mod:`!nis`
-* :mod:`!nntplib`
-* :mod:`!ossaudiodev`
-* :mod:`!pipes`
-* :mod:`!sndhdr`
-* :mod:`!spwd`
-* :mod:`!sunau`
-* :mod:`!telnetlib`
-* :mod:`!uu`
-* :mod:`!xdrlib`
-
-Other modules:
-
-* :mod:`!lib2to3`, and the :program:`2to3` program (:gh:`84540`)
-
-APIs:
-
-* :class:`!configparser.LegacyInterpolation` (:gh:`90765`)
-* ``locale.resetlocale()`` (:gh:`90817`)
-* :meth:`!turtle.RawTurtle.settiltangle` (:gh:`50096`)
-* :func:`!unittest.findTestCases` (:gh:`50096`)
-* :func:`!unittest.getTestCaseNames` (:gh:`50096`)
-* :func:`!unittest.makeSuite` (:gh:`50096`)
-* :meth:`!unittest.TestProgram.usageExit` (:gh:`67048`)
-* :class:`!webbrowser.MacOSX` (:gh:`86421`)
-* :class:`classmethod` descriptor chaining (:gh:`89519`)
-* :mod:`importlib.resources` deprecated methods:
-
-  * ``contents()``
-  * ``is_resource()``
-  * ``open_binary()``
-  * ``open_text()``
-  * ``path()``
-  * ``read_binary()``
-  * ``read_text()``
-
-  Use :func:`importlib.resources.files()` instead.  Refer to `importlib-resources: Migrating from Legacy
-  <https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy>`_ (:gh:`106531`)
-
-Pending Removal in Python 3.14
-------------------------------
-
-The following APIs have been deprecated
-and will be removed in Python 3.14.
-
-* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
-  of :class:`!argparse.BooleanOptionalAction`
-
-* :mod:`ast`:
-
-  * :class:`!ast.Num`
-  * :class:`!ast.Str`
-  * :class:`!ast.Bytes`
-  * :class:`!ast.NameConstant`
-  * :class:`!ast.Ellipsis`
-
-* :mod:`asyncio`:
-
-  * :class:`!asyncio.MultiLoopChildWatcher`
-  * :class:`!asyncio.FastChildWatcher`
-  * :class:`!asyncio.AbstractChildWatcher`
-  * :class:`!asyncio.SafeChildWatcher`
-  * :func:`!asyncio.set_child_watcher`
-  * :func:`!asyncio.get_child_watcher`,
-  * :meth:`!asyncio.AbstractEventLoopPolicy.set_child_watcher`
-  * :meth:`!asyncio.AbstractEventLoopPolicy.get_child_watcher`
-
-* :mod:`collections.abc`: :class:`!collections.abc.ByteString`.
-
-* :mod:`email`: the *isdst* parameter in :func:`email.utils.localtime`.
-
-* :mod:`importlib.abc`:
-
-  * :class:`!importlib.abc.ResourceReader`
-  * :class:`!importlib.abc.Traversable`
-  * :class:`!importlib.abc.TraversableResources`
-
-* :mod:`itertools`: Support for copy, deepcopy, and pickle operations.
-
-* :mod:`pkgutil`:
-
-  * :func:`!pkgutil.find_loader`
-  * :func:`!pkgutil.get_loader`.
-
-* :mod:`pty`:
-
-  * :func:`!pty.master_open`
-  * :func:`!pty.slave_open`
-
-* :mod:`shutil`: The *onerror* argument of :func:`shutil.rmtree`
-
-* :mod:`typing`: :class:`!typing.ByteString`
-
-* :mod:`xml.etree.ElementTree`: Testing the truth value of an :class:`xml.etree.ElementTree.Element`.
-
-* The ``__package__`` and ``__cached__`` attributes on module objects.
-
-* The :attr:`~codeobject.co_lnotab` attribute of code objects.
-
-Pending Removal in Python 3.15
-------------------------------
-
-The following APIs have been deprecated
-and will be removed in Python 3.15.
-
-APIs:
-
-* :func:`locale.getdefaultlocale` (:gh:`90817`)
-
+.. include:: ../deprecations/pending-removal-in-3.13.rst
 
-Pending Removal in Future Versions
-----------------------------------
+.. include:: ../deprecations/pending-removal-in-3.14.rst
 
-The following APIs were deprecated in earlier Python versions and will be removed,
-although there is currently no date scheduled for their removal.
+.. include:: ../deprecations/pending-removal-in-3.15.rst
 
-* :mod:`array`'s ``'u'`` format code (:gh:`57281`)
+.. include:: ../deprecations/pending-removal-in-3.16.rst
 
-* :class:`typing.Text` (:gh:`92332`)
-
-* Currently Python accepts numeric literals immediately followed by keywords,
-  for example ``0in x``, ``1or x``, ``0if 1else 2``.  It allows confusing
-  and ambiguous expressions like ``[0x1for x in y]`` (which can be
-  interpreted as ``[0x1 for x in y]`` or ``[0x1f or x in y]``).
-  A syntax warning is raised if the numeric literal is
-  immediately followed by one of keywords :keyword:`and`, :keyword:`else`,
-  :keyword:`for`, :keyword:`if`, :keyword:`in`, :keyword:`is` and :keyword:`or`.
-  In a future release it will be changed to a syntax error. (:gh:`87999`)
+.. include:: ../deprecations/pending-removal-in-future.rst
 
+.. _whatsnew312-removed:
 
 Removed
 =======
@@ -1502,6 +1368,8 @@ configparser
   * :class:`configparser.ConfigParser` no longer has a ``readfp`` method.
     Use :meth:`~configparser.ConfigParser.read_file` instead.
 
+.. _whatsnew312-removed-distutils:
+
 distutils
 ---------
 
@@ -1559,9 +1427,9 @@ hashlib
 -------
 
 * Remove the pure Python implementation of :mod:`hashlib`'s
-  :func:`hashlib.pbkdf2_hmac()`, deprecated in Python 3.10. Python 3.10 and
+  :func:`hashlib.pbkdf2_hmac`, deprecated in Python 3.10. Python 3.10 and
   newer requires OpenSSL 1.1.1 (:pep:`644`): this OpenSSL version provides
-  a C implementation of :func:`~hashlib.pbkdf2_hmac()` which is faster.
+  a C implementation of :func:`~hashlib.pbkdf2_hmac` which is faster.
   (Contributed by Victor Stinner in :gh:`94199`.)
 
 importlib
@@ -1570,7 +1438,7 @@ importlib
 * Many previously deprecated cleanups in :mod:`importlib` have now been
   completed:
 
-  * References to, and support for :meth:`!module_repr()` has been removed.
+  * References to, and support for :meth:`!module_repr` has been removed.
     (Contributed by Barry Warsaw in :gh:`97850`.)
 
   * ``importlib.util.set_package``, ``importlib.util.set_loader`` and
@@ -1583,6 +1451,8 @@ importlib
   * ``importlib.abc.Finder``, ``pkgutil.ImpImporter``, and ``pkgutil.ImpLoader``
     have been removed.  (Contributed by Barry Warsaw in :gh:`98040`.)
 
+.. _whatsnew312-removed-imp:
+
 imp
 ---
 
@@ -1739,7 +1609,7 @@ unittest
 
   * Undocumented :meth:`TestLoader.loadTestsFromModule
     <unittest.TestLoader.loadTestsFromModule>` parameter *use_load_tests*
-    (deprecated and ignored since Python 3.2).
+    (deprecated and ignored since Python 3.5).
 
   * An alias of the :class:`~unittest.TextTestResult` class:
     ``_TextTestResult`` (deprecated in Python 3.2).
@@ -2024,7 +1894,7 @@ New Features
 
   The :c:macro:`Py_TPFLAGS_MANAGED_DICT` and :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF`
   flags have been added. This allows extensions classes to support object
-  ``__dict__`` and weakrefs with less bookkeeping,
+  :attr:`~object.__dict__` and weakrefs with less bookkeeping,
   using less memory and with faster access.
 
 * API for performing calls using
@@ -2143,7 +2013,7 @@ Porting to Python 3.12
   internal-only field directly.
 
   To get a list of subclasses, call the Python method
-  :py:meth:`~class.__subclasses__` (using :c:func:`PyObject_CallMethod`,
+  :py:meth:`~type.__subclasses__` (using :c:func:`PyObject_CallMethod`,
   for example).
 
 * Add support of more formatting options (left aligning, octals, uppercase
@@ -2162,7 +2032,7 @@ Porting to Python 3.12
   :c:func:`PyUnicode_FromFormatV`.
   (Contributed by Philip Georgi in :gh:`95504`.)
 
-* Extension classes wanting to add a ``__dict__`` or weak reference slot
+* Extension classes wanting to add a :attr:`~object.__dict__` or weak reference slot
   should use :c:macro:`Py_TPFLAGS_MANAGED_DICT` and
   :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` instead of ``tp_dictoffset`` and
   ``tp_weaklistoffset``, respectively.
@@ -2347,92 +2217,13 @@ Deprecated
   overrides :c:member:`~PyTypeObject.tp_new` is deprecated.
   Call the metaclass instead.
 
-Pending Removal in Python 3.14
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+.. Add deprecations above alphabetically, not here at the end.
 
-* The ``ma_version_tag`` field in :c:type:`PyDictObject` for extension modules
-  (:pep:`699`; :gh:`101193`).
+.. include:: ../deprecations/c-api-pending-removal-in-3.14.rst
 
-* Global configuration variables:
+.. include:: ../deprecations/c-api-pending-removal-in-3.15.rst
 
-  * :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
-  * :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
-  * :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
-  * :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
-  * :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
-  * :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
-  * :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
-  * :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
-  * :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
-  * :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
-  * :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
-  * :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
-  * :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
-  * :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
-    and :c:member:`PyConfig.hash_seed`
-  * :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
-  * :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyPreConfig.legacy_windows_fs_encoding`
-  * :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
-  * :c:var:`!Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
-  * :c:var:`!Py_HasFileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
-  * :c:var:`!Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
-  * :c:var:`!Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
-
-  The :c:func:`Py_InitializeFromConfig` API should be used with
-  :c:type:`PyConfig` instead.
-
-* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
-  bases (:gh:`95388`).
-
-Pending Removal in Python 3.15
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-* :c:func:`PyImport_ImportModuleNoBlock`: use :c:func:`PyImport_ImportModule`
-* :c:type:`!Py_UNICODE_WIDE` type: use :c:type:`wchar_t`
-* :c:type:`Py_UNICODE` type: use :c:type:`wchar_t`
-* Python initialization functions:
-
-  * :c:func:`PySys_ResetWarnOptions`: clear :data:`sys.warnoptions` and
-    :data:`!warnings.filters`
-  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix`
-  * :c:func:`Py_GetPath`: get :data:`sys.path`
-  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix`
-  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable`
-  * :c:func:`Py_GetProgramName`: get :data:`sys.executable`
-  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
-    the :envvar:`PYTHONHOME` environment variable
-
-Pending Removal in Future Versions
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The following APIs are deprecated and will be removed,
-although there is currently no date scheduled for their removal.
-
-* :c:macro:`Py_TPFLAGS_HAVE_FINALIZE`: unneeded since Python 3.8
-* :c:func:`PyErr_Fetch`: use :c:func:`PyErr_GetRaisedException`
-* :c:func:`PyErr_NormalizeException`: use :c:func:`PyErr_GetRaisedException`
-* :c:func:`PyErr_Restore`: use :c:func:`PyErr_SetRaisedException`
-* :c:func:`PyModule_GetFilename`: use :c:func:`PyModule_GetFilenameObject`
-* :c:func:`PyOS_AfterFork`: use :c:func:`PyOS_AfterFork_Child`
-* :c:func:`PySlice_GetIndicesEx`: use :c:func:`PySlice_Unpack` and :c:func:`PySlice_AdjustIndices`
-* :c:func:`!PyUnicode_AsDecodedObject`: use :c:func:`PyCodec_Decode`
-* :c:func:`!PyUnicode_AsDecodedUnicode`: use :c:func:`PyCodec_Decode`
-* :c:func:`!PyUnicode_AsEncodedObject`: use :c:func:`PyCodec_Encode`
-* :c:func:`!PyUnicode_AsEncodedUnicode`: use :c:func:`PyCodec_Encode`
-* :c:func:`PyUnicode_READY`: unneeded since Python 3.12
-* :c:func:`!PyErr_Display`: use :c:func:`PyErr_DisplayException`
-* :c:func:`!_PyErr_ChainExceptions`: use ``_PyErr_ChainExceptions1``
-* :c:member:`!PyBytesObject.ob_shash` member:
-  call :c:func:`PyObject_Hash` instead
-* :c:member:`!PyDictObject.ma_version_tag` member
-* Thread Local Storage (TLS) API:
-
-  * :c:func:`PyThread_create_key`: use :c:func:`PyThread_tss_alloc`
-  * :c:func:`PyThread_delete_key`: use :c:func:`PyThread_tss_free`
-  * :c:func:`PyThread_set_key_value`: use :c:func:`PyThread_tss_set`
-  * :c:func:`PyThread_get_key_value`: use :c:func:`PyThread_tss_get`
-  * :c:func:`PyThread_delete_key_value`: use :c:func:`PyThread_tss_delete`
-  * :c:func:`PyThread_ReInitTLS`: unneeded since Python 3.7
+.. include:: ../deprecations/c-api-pending-removal-in-future.rst
 
 Removed
 -------
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst
index 69264a3672bbbf..357345a802ebeb 100644
--- a/Doc/whatsnew/3.13.rst
+++ b/Doc/whatsnew/3.13.rst
@@ -3,7 +3,7 @@
   What's New In Python 3.13
 ****************************
 
-:Editor: Thomas Wouters
+:Editors: Adam Turner and Thomas Wouters
 
 .. Rules for maintenance:
 
@@ -46,19 +46,13 @@
    when researching a change.
 
 This article explains the new features in Python 3.13, compared to 3.12.
-
+Python 3.13 was released on October 7, 2024.
 For full details, see the :ref:`changelog <changelog>`.
 
 .. seealso::
 
    :pep:`719` -- Python 3.13 Release Schedule
 
-.. note::
-
-   Prerelease users should be aware that this document is currently in draft
-   form. It will be updated substantially as Python 3.13 moves towards release,
-   so it's worth checking back even after reading earlier versions.
-
 
 Summary -- Release Highlights
 =============================
@@ -66,14 +60,38 @@ Summary -- Release Highlights
 .. This section singles out the most important changes in Python 3.13.
    Brevity is key.
 
-Python 3.13 beta is the pre-release of the next version of the Python
-programming language, with a mix of changes to the language, the
-implementation and the standard library. The biggest changes to the
-implementation include a new interactive interpreter, and experimental
-support for dropping the Global Interpreter Lock (:pep:`703`) and a
-Just-In-Time compiler (:pep:`744`). The library changes contain removal of
-deprecated APIs and modules, as well as the usual improvements in
-user-friendliness and correctness.
+Python 3.13 is the latest stable release of the Python programming
+language, with a mix of changes to the language, the implementation
+and the standard library.
+The biggest changes include a new `interactive interpreter
+<whatsnew313-better-interactive-interpreter_>`_,
+experimental support for running in a `free-threaded mode
+<whatsnew313-free-threaded-cpython_>`_ (:pep:`703`),
+and a `Just-In-Time compiler <whatsnew313-jit-compiler_>`_ (:pep:`744`).
+
+Error messages continue to improve, with tracebacks now highlighted in color
+by default. The :func:`locals` builtin now has :ref:`defined semantics
+<whatsnew313-locals-semantics>` for changing the returned mapping,
+and type parameters now support default values.
+
+The library changes contain removal of deprecated APIs and modules,
+as well as the usual improvements in user-friendliness and correctness.
+Several legacy standard library modules have now `been removed
+<whatsnew313-pep594_>`_ following their deprecation in Python 3.11 (:pep:`594`).
+
+This article doesn't attempt to provide a complete specification
+of all new features, but instead gives a convenient overview.
+For full details refer to the documentation,
+such as the :ref:`Library Reference <library-index>`
+and :ref:`Language Reference <reference-index>`.
+To understand the complete implementation and design rationale for a change,
+refer to the PEP for a particular new feature;
+but note that PEPs usually are not kept up-to-date
+once a feature has been fully implemented.
+See `Porting to Python 3.13`_ for guidance on upgrading from
+earlier versions of Python.
+
+--------------
 
 .. PEP-sized items next.
 
@@ -82,111 +100,160 @@ Interpreter improvements:
 * A greatly improved :ref:`interactive interpreter
   <whatsnew313-better-interactive-interpreter>` and
   :ref:`improved error messages <whatsnew313-improved-error-messages>`.
-
-* Color support in the new :ref:`interactive interpreter
-  <whatsnew313-better-interactive-interpreter>`,
-  as well as in :ref:`tracebacks <whatsnew313-improved-error-messages>`
-  and :ref:`doctest <whatsnew313-doctest>` output. This can be disabled through the
-  :envvar:`PYTHON_COLORS` and |NO_COLOR|_ environment variables.
-
+* :pep:`667`: The :func:`locals` builtin now has
+  :ref:`defined semantics <whatsnew313-locals-semantics>` when mutating the
+  returned mapping. Python debuggers and similar tools may now more reliably
+  update local variables in optimized scopes even during concurrent code
+  execution.
+* :pep:`703`: CPython 3.13 has experimental support for running with the
+  :term:`global interpreter lock` disabled. See :ref:`Free-threaded CPython
+  <whatsnew313-free-threaded-cpython>` for more details.
 * :pep:`744`: A basic :ref:`JIT compiler <whatsnew313-jit-compiler>` was added.
   It is currently disabled by default (though we may turn it on later).
-  Performance improvements are modest -- we expect to be improving this
+  Performance improvements are modest -- we expect to improve this
   over the next few releases.
-
-* :pep:`667`: :attr:`FrameType.f_locals <frame.f_locals>` when used in
-  a function now returns a write-through proxy to the frame's locals,
-  rather than a ``dict``. See the PEP for corresponding C API changes
-  and deprecations.
+* Color support in the new :ref:`interactive interpreter
+  <whatsnew313-better-interactive-interpreter>`,
+  as well as in :ref:`tracebacks <whatsnew313-improved-error-messages>`
+  and :ref:`doctest <whatsnew313-doctest>` output.
+  This can be disabled through the :envvar:`PYTHON_COLORS` and |NO_COLOR|_
+  environment variables.
+
+Python data model improvements:
+
+* :attr:`~type.__static_attributes__` stores the names of attributes accessed
+  through ``self.X`` in any function in a class body.
+* :attr:`~type.__firstlineno__` records the first line number of a class
+  definition.
+
+Significant improvements in the standard library:
+
+* Add a new :exc:`PythonFinalizationError` exception, raised when an operation
+  is blocked during :term:`finalization <interpreter shutdown>`.
+* The :mod:`argparse` module now supports deprecating command-line options,
+  positional arguments, and subcommands.
+* The new functions :func:`base64.z85encode` and :func:`base64.z85decode`
+  support encoding and decoding `Z85 data`_.
+* The :mod:`copy` module now has a :func:`copy.replace` function,
+  with support for many builtin types and any class defining
+  the :func:`~object.__replace__` method.
+* The new :mod:`dbm.sqlite3` module is now the default :mod:`dbm` backend.
+* The :mod:`os` module has a :ref:`suite of new functions <os-timerfd>`
+  for working with Linux's timer notification file descriptors.
+* The :mod:`random` module now has a :ref:`command-line interface <random-cli>`.
+
+Security improvements:
+
+* :func:`ssl.create_default_context` sets :data:`ssl.VERIFY_X509_PARTIAL_CHAIN`
+  and :data:`ssl.VERIFY_X509_STRICT` as default flags.
+
+C API improvements:
+
+* The :c:data:`Py_mod_gil` slot is now used to indicate that
+  an extension module supports running with the :term:`GIL` disabled.
+* The :doc:`PyTime C API </c-api/time>` has been added,
+  providing access to system clocks.
+* :c:type:`PyMutex` is a new lightweight mutex that occupies a single byte.
+* There is a new :ref:`suite of functions <c-api-monitoring>`
+  for generating :pep:`669` monitoring events in the C API.
 
 New typing features:
 
 * :pep:`696`: Type parameters (:data:`typing.TypeVar`, :data:`typing.ParamSpec`,
   and :data:`typing.TypeVarTuple`) now support defaults.
-
-* :pep:`742`: :data:`typing.TypeIs` was added, providing more intuitive
-  type narrowing behavior.
-
-* :pep:`705`: :data:`typing.ReadOnly` was added, to mark an item of a
+* :pep:`702`: The new :func:`warnings.deprecated` decorator adds support
+  for marking deprecations in the type system and at runtime.
+* :pep:`705`: :data:`typing.ReadOnly` can be used to mark an item of a
   :class:`typing.TypedDict` as read-only for type checkers.
-
-Free-threading:
-
-* :pep:`703`: CPython 3.13 has experimental support for running with the
-  :term:`global interpreter lock` disabled when built with ``--disable-gil``.
-  See :ref:`Free-threaded CPython <free-threaded-cpython>` for more details.
+* :pep:`742`: :data:`typing.TypeIs` provides more intuitive
+  type narrowing behavior, as an alternative to :data:`typing.TypeGuard`.
 
 Platform support:
 
-* :pep:`730`: Apple's iOS is now an officially supported platform. Official
-  Android support (:pep:`738`) is in the works as well.
+* :pep:`730`: Apple's iOS is now an :ref:`officially supported platform
+  <whatsnew313-platform-support>`, at :pep:`tier 3 <11#tier-3>`.
+* :pep:`738`: Android is now an :ref:`officially supported platform
+  <whatsnew313-platform-support>`, at :pep:`tier 3 <11#tier-3>`.
+* ``wasm32-wasi`` is now supported as a :pep:`tier 2 <11#tier-2>` platform.
+* ``wasm32-emscripten`` is no longer an officially supported platform.
 
-Removed modules:
+Important removals:
 
 * :ref:`PEP 594 <whatsnew313-pep594>`: The remaining 19 "dead batteries"
-  have been removed from the standard library:
+  (legacy stdlib modules) have been removed from the standard library:
   :mod:`!aifc`, :mod:`!audioop`, :mod:`!cgi`, :mod:`!cgitb`, :mod:`!chunk`,
   :mod:`!crypt`, :mod:`!imghdr`, :mod:`!mailcap`, :mod:`!msilib`, :mod:`!nis`,
-  :mod:`!nntplib`, :mod:`!ossaudiodev`, :mod:`!pipes`, :mod:`!sndhdr`, :mod:`!spwd`,
-  :mod:`!sunau`, :mod:`!telnetlib`, :mod:`!uu` and :mod:`!xdrlib`.
-
-* Also removed were the :mod:`!tkinter.tix` and :mod:`!lib2to3` modules, and the
-  ``2to3`` program.
+  :mod:`!nntplib`, :mod:`!ossaudiodev`, :mod:`!pipes`, :mod:`!sndhdr`,
+  :mod:`!spwd`, :mod:`!sunau`, :mod:`!telnetlib`, :mod:`!uu` and :mod:`!xdrlib`.
+* Remove the :program:`2to3` tool and :mod:`!lib2to3` module
+  (deprecated in Python 3.11).
+* Remove the :mod:`!tkinter.tix` module (deprecated in Python 3.6).
+* Remove the :func:`!locale.resetlocale` function.
+* Remove the :mod:`!typing.io` and :mod:`!typing.re` namespaces.
+* Remove chained :class:`classmethod` descriptors.
 
 Release schedule changes:
 
-* :pep:`602` ("Annual Release Cycle for Python") has been updated:
+:pep:`602` ("Annual Release Cycle for Python") has been updated
+to extend the full support ('bugfix') period for new releases to two years.
+This updated policy means that:
+
+* Python 3.9--3.12 have one and a half years of full support,
+  followed by three and a half years of security fixes.
+* Python 3.13 and later have two years of full support,
+  followed by three years of security fixes.
 
-  * Python 3.9 - 3.12 have one and a half years of full support,
-    followed by three and a half years of security fixes.
-  * Python 3.13 and later have two years of full support,
-    followed by three years of security fixes.
 
 New Features
 ============
 
+
 .. _whatsnew313-better-interactive-interpreter:
 
-A Better Interactive Interpreter
+A better interactive interpreter
 --------------------------------
 
-On Unix-like systems like Linux or macOS, Python now uses a new
-:term:`interactive` shell. When the user starts the :term:`REPL` from an
-interactive terminal, and both :mod:`curses` and :mod:`readline` are
-available, the interactive shell now supports the following new features:
+Python now uses a new :term:`interactive` shell by default, based on code
+from the `PyPy project`_.
+When the user starts the :term:`REPL` from an interactive terminal,
+the following new features are now supported:
 
-* Colorized prompts.
 * Multiline editing with history preservation.
+* Direct support for REPL-specific commands like :kbd:`help`, :kbd:`exit`,
+  and :kbd:`quit`, without the need to call them as functions.
+* Prompts and tracebacks with :ref:`color enabled by default
+  <using-on-controlling-color>`.
 * Interactive help browsing using :kbd:`F1` with a separate command
   history.
 * History browsing using :kbd:`F2` that skips output as well as the
   :term:`>>>` and :term:`...` prompts.
 * "Paste mode" with :kbd:`F3` that makes pasting larger blocks of code
   easier (press :kbd:`F3` again to return to the regular prompt).
-* The ability to issue REPL-specific commands like :kbd:`help`, :kbd:`exit`,
-  and :kbd:`quit` without the need to use call parentheses after the command
-  name.
-
-If the new interactive shell is not desired, it can be disabled via
-the :envvar:`PYTHON_BASIC_REPL` environment variable.
 
+To disable the new interactive shell,
+set the :envvar:`PYTHON_BASIC_REPL` environment variable.
 For more on interactive mode, see :ref:`tut-interac`.
 
 (Contributed by Pablo Galindo Salgado, Łukasz Langa, and
-Lysandros Nikolaou in :gh:`111201` based on code from the PyPy project.)
+Lysandros Nikolaou in :gh:`111201` based on code from the PyPy project.
+Windows support contributed by Dino Viehland and Anthony Shaw.)
+
+.. _`PyPy project`: https://pypy.org/
+
 
 .. _whatsnew313-improved-error-messages:
 
-Improved Error Messages
+Improved error messages
 -----------------------
 
-* The interpreter now colorizes error messages when displaying tracebacks by default.
-  This feature can be controlled via the new :envvar:`PYTHON_COLORS` environment
-  variable as well as the canonical |NO_COLOR|_ and |FORCE_COLOR|_ environment
-  variables. See also :ref:`using-on-controlling-color`.
+* The interpreter now uses color by default when displaying tracebacks in the
+  terminal. This feature :ref:`can be controlled <using-on-controlling-color>`
+  via the new :envvar:`PYTHON_COLORS` environment variable as well as
+  the canonical |NO_COLOR|_ and |FORCE_COLOR|_ environment variables.
   (Contributed by Pablo Galindo Salgado in :gh:`112730`.)
 
 .. Apparently this how you hack together a formatted link:
+   (https://www.docutils.org/docs/ref/rst/directives.html#replacement-text)
 
 .. |FORCE_COLOR| replace:: ``FORCE_COLOR``
 .. _FORCE_COLOR: https://force-color.org/
@@ -198,809 +265,1038 @@ Improved Error Messages
   standard library module. When this results in errors, we now
   display a more helpful error message:
 
-  .. code-block:: shell-session
+  .. code-block:: pytb
 
-    $ python random.py
-    Traceback (most recent call last):
-      File "/home/random.py", line 1, in <module>
-        import random; print(random.randint(5))
-        ^^^^^^^^^^^^^
-      File "/home/random.py", line 1, in <module>
-        import random; print(random.randint(5))
-                            ^^^^^^^^^^^^^^
-    AttributeError: module 'random' has no attribute 'randint' (consider renaming '/home/random.py' since it has the same name as the standard library module named 'random' and the import system gives it precedence)
+     $ python random.py
+     Traceback (most recent call last):
+       File "/home/me/random.py", line 1, in <module>
+         import random
+       File "/home/me/random.py", line 3, in <module>
+         print(random.randint(5))
+               ^^^^^^^^^^^^^^
+     AttributeError: module 'random' has no attribute 'randint' (consider renaming '/home/me/random.py' since it has the same name as the standard library module named 'random' and prevents importing that standard library module)
 
   Similarly, if a script has the same name as a third-party
-  module it attempts to import, and this results in errors,
+  module that it attempts to import and this results in errors,
   we also display a more helpful error message:
 
-  .. code-block:: shell-session
+  .. code-block:: pytb
 
-    $ python numpy.py
-    Traceback (most recent call last):
-      File "/home/numpy.py", line 1, in <module>
-        import numpy as np; np.array([1,2,3])
-        ^^^^^^^^^^^^^^^^^^
-      File "/home/numpy.py", line 1, in <module>
-        import numpy as np; np.array([1,2,3])
-                            ^^^^^^^^
-    AttributeError: module 'numpy' has no attribute 'array' (consider renaming '/home/numpy.py' if it has the same name as a third-party module you intended to import)
+     $ python numpy.py
+     Traceback (most recent call last):
+       File "/home/me/numpy.py", line 1, in <module>
+         import numpy as np
+       File "/home/me/numpy.py", line 3, in <module>
+         np.array([1, 2, 3])
+         ^^^^^^^^
+     AttributeError: module 'numpy' has no attribute 'array' (consider renaming '/home/me/numpy.py' if it has the same name as a library you intended to import)
 
   (Contributed by Shantanu Jain in :gh:`95754`.)
 
-* When an incorrect keyword argument is passed to a function, the error message
-  now potentially suggests the correct keyword argument.
+* The error message now tries to suggest the correct keyword argument
+  when an incorrect keyword argument is passed to a function.
+
+  .. code-block:: pycon
+
+     >>> "Better error messages!".split(max_split=1)
+     Traceback (most recent call last):
+       File "<python-input-0>", line 1, in <module>
+         "Better error messages!".split(max_split=1)
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
+     TypeError: split() got an unexpected keyword argument 'max_split'. Did you mean 'maxsplit'?
+
   (Contributed by Pablo Galindo Salgado and Shantanu Jain in :gh:`107944`.)
 
-    >>> "better error messages!".split(max_split=1)
-    Traceback (most recent call last):
-      File "<stdin>", line 1, in <module>
-        "better error messages!".split(max_split=1)
-        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
-    TypeError: split() got an unexpected keyword argument 'max_split'. Did you mean 'maxsplit'?
 
-* Classes have a new :attr:`~class.__static_attributes__` attribute, populated by the compiler,
-  with a tuple of names of attributes of this class which are accessed
-  through ``self.X`` from any function in its body. (Contributed by Irit Katriel
-  in :gh:`115775`.)
+.. _whatsnew313-free-threaded-cpython:
 
-Incremental Garbage Collection
-------------------------------
+Free-threaded CPython
+---------------------
 
-* The cycle garbage collector is now incremental.
-  This means that maximum pause times are reduced
-  by an order of magnitude or more for larger heaps.
+CPython now has experimental support for running in a free-threaded mode,
+with the :term:`global interpreter lock` (GIL) disabled.
+This is an experimental feature and therefore is not enabled by default.
+The free-threaded mode requires a different executable,
+usually called ``python3.13t`` or ``python3.13t.exe``.
+Pre-built binaries marked as *free-threaded* can be installed as part of
+the official :ref:`Windows <install-freethreaded-windows>`
+and :ref:`macOS <install-freethreaded-macos>` installers,
+or CPython can be built from source with the :option:`--disable-gil` option.
 
-Support For Mobile Platforms
-----------------------------
+Free-threaded execution allows for full utilization of the available
+processing power by running threads in parallel on available CPU cores.
+While not all software will benefit from this automatically, programs
+designed with threading in mind will run faster on multi-core hardware.
+**The free-threaded mode is experimental** and work is ongoing to improve it:
+expect some bugs and a substantial single-threaded performance hit.
+Free-threaded builds of CPython support optionally running with the GIL
+enabled at runtime using the environment variable :envvar:`PYTHON_GIL` or
+the command-line option :option:`-X gil=1`.
+
+To check if the current interpreter supports free-threading, :option:`python -VV <-V>`
+and :attr:`sys.version` contain "experimental free-threading build".
+The new :func:`!sys._is_gil_enabled` function can be used to check whether
+the GIL is actually disabled in the running process.
+
+C-API extension modules need to be built specifically for the free-threaded
+build. Extensions that support running with the :term:`GIL` disabled should
+use the :c:data:`Py_mod_gil` slot. Extensions using single-phase init should
+use :c:func:`PyUnstable_Module_SetGIL` to indicate whether they support
+running with the GIL disabled. Importing C extensions that don't use these
+mechanisms will cause the GIL to be enabled, unless the GIL was explicitly
+disabled with the :envvar:`PYTHON_GIL` environment variable or the
+:option:`-X gil=0` option.
+pip 24.1 or newer is required to install packages with C extensions in the
+free-threaded build.
+
+This work was made possible thanks to many individuals and
+organizations, including the large community of contributors to Python
+and third-party projects to test and enable free-threading support.
+Notable contributors include:
+Sam Gross, Ken Jin, Donghee Na, Itamar Oren, Matt Page, Brett Simmers,
+Dino Viehland, Carl Meyer, Nathan Goldbaum, Ralf Gommers,
+Lysandros Nikolaou, and many others.
+Many of these contributors are employed by Meta, which has
+provided significant engineering resources to support this project.
 
-* iOS is now a :pep:`11` supported platform. ``arm64-apple-ios``
-  (iPhone and iPad devices released after 2013) and
-  ``arm64-apple-ios-simulator`` (Xcode iOS simulator running on Apple Silicon
-  hardware) are now tier 3 platforms.
+.. seealso::
 
-  ``x86_64-apple-ios-simulator`` (Xcode iOS simulator running on older x86_64
-  hardware) is not a tier 3 supported platform, but will be supported on a
-  best-effort basis.
+   :pep:`703` "Making the Global Interpreter Lock Optional in CPython"
+   contains rationale and information surrounding this work.
 
-  See :pep:`730`: for more details.
+   `Porting Extension Modules to Support Free-Threading
+   <https://py-free-threading.github.io/porting/>`_: A community-maintained
+   porting guide for extension authors.
 
-  (PEP written and implementation contributed by Russell Keith-Magee in
-  :gh:`114099`.)
 
 .. _whatsnew313-jit-compiler:
 
-Experimental JIT Compiler
-=========================
+An experimental just-in-time (JIT) compiler
+-------------------------------------------
 
-When CPython is configured using the ``--enable-experimental-jit`` option,
-a just-in-time compiler is added which may speed up some Python programs.
+When CPython is configured and built using
+the :option:`!--enable-experimental-jit` option,
+a just-in-time (JIT) compiler is added which may speed up some Python programs.
+On Windows, use ``PCbuild/build.bat --experimental-jit`` to enable the JIT
+or ``--experimental-jit-interpreter`` to enable the Tier 2 interpreter.
+Build requirements and further supporting information `are contained at`__
+:file:`Tools/jit/README.md`.
 
-The internal architecture is roughly as follows.
+__ https://github.com/python/cpython/blob/main/Tools/jit/README.md
 
-* We start with specialized *Tier 1 bytecode*.
-  See :ref:`What's new in 3.11 <whatsnew311-pep659>` for details.
+The :option:`!--enable-experimental-jit` option takes these (optional) values,
+defaulting to ``yes`` if :option:`!--enable-experimental-jit` is present
+without the optional value.
 
-* When the Tier 1 bytecode gets hot enough, it gets translated
-  to a new, purely internal *Tier 2 IR*, a.k.a. micro-ops ("uops").
+* ``no``: Disable the entire Tier 2 and JIT pipeline.
+* ``yes``: Enable the JIT.
+  To disable the JIT at runtime, pass the environment variable ``PYTHON_JIT=0``.
+* ``yes-off``: Build the JIT but disable it by default.
+  To enable the JIT at runtime, pass the environment variable ``PYTHON_JIT=1``.
+* ``interpreter``: Enable the Tier 2 interpreter but disable the JIT.
+  The interpreter can be disabled by running with ``PYTHON_JIT=0``.
 
-* The Tier 2 IR uses the same stack-based VM as Tier 1, but the
-  instruction format is better suited to translation to machine code.
+The internal architecture is roughly as follows:
 
+* We start with specialized *Tier 1 bytecode*.
+  See :ref:`What's new in 3.11 <whatsnew311-pep659>` for details.
+* When the Tier 1 bytecode gets hot enough, it gets translated
+  to a new purely internal intermediate representation (IR),
+  called the *Tier 2 IR*, and sometimes referred to as micro-ops ("uops").
+* The Tier 2 IR uses the same stack-based virtual machine as Tier 1,
+  but the instruction format is better suited to translation to machine code.
 * We have several optimization passes for Tier 2 IR, which are applied
   before it is interpreted or translated to machine code.
-
 * There is a Tier 2 interpreter, but it is mostly intended for debugging
   the earlier stages of the optimization pipeline.
   The Tier 2 interpreter can be enabled by configuring Python
   with ``--enable-experimental-jit=interpreter``.
-
 * When the JIT is enabled, the optimized
   Tier 2 IR is translated to machine code, which is then executed.
-
 * The machine code translation process uses a technique called
   *copy-and-patch*. It has no runtime dependencies, but there is a new
   build-time dependency on LLVM.
 
-The ``--enable-experimental-jit`` flag has the following optional values:
-
-* ``no`` (default) -- Disable the entire Tier 2 and JIT pipeline.
-
-* ``yes`` (default if the flag is present without optional value)
-  -- Enable the JIT. To disable the JIT at runtime,
-  pass the environment variable ``PYTHON_JIT=0``.
-
-* ``yes-off`` -- Build the JIT but disable it by default.
-  To enable the JIT at runtime, pass the environment variable
-  ``PYTHON_JIT=1``.
-
-* ``interpreter`` -- Enable the Tier 2 interpreter but disable the JIT.
-  The interpreter can be disabled by running with
-  ``PYTHON_JIT=0``.
-
-(On Windows, use ``PCbuild/build.bat --experimental-jit`` to enable the JIT
-or ``--experimental-jit-interpreter`` to enable the Tier 2 interpreter.)
-
-See :pep:`744` for more details.
+.. seealso:: :pep:`744`
 
 (JIT by Brandt Bucher, inspired by a paper by Haoran Xu and Fredrik Kjolstad.
 Tier 2 IR by Mark Shannon and Guido van Rossum.
 Tier 2 optimizer by Ken Jin.)
 
-.. _free-threaded-cpython:
-
-Free-threaded CPython
-=====================
-
-CPython will run with the :term:`global interpreter lock` (GIL) disabled when
-configured using the ``--disable-gil`` option at build time. This is an
-experimental feature and therefore isn't used by default. Users need to
-either compile their own interpreter, or install one of the experimental
-builds that are marked as *free-threaded*.
-
-Free-threaded execution allows for full utilization of the available
-processing power by running threads in parallel on available CPU cores.
-While not all software will benefit from this automatically, programs
-designed with threading in mind will run faster on multicore hardware.
 
-Work is still ongoing: expect some bugs and a substantial single-threaded
-performance hit.
+.. _whatsnew313-locals-semantics:
+
+Defined mutation semantics for :py:func:`locals`
+------------------------------------------------
+
+Historically, the expected result of mutating the return value of
+:func:`locals` has been left to individual Python implementations to define.
+Starting from Python 3.13, :pep:`667` standardises
+the historical behavior of CPython for most code execution scopes,
+but changes :term:`optimized scopes <optimized scope>`
+(functions, generators, coroutines, comprehensions, and generator expressions)
+to explicitly return independent snapshots of the currently assigned local
+variables, including locally referenced nonlocal variables captured in closures.
+
+This change to the semantics of :func:`locals` in optimized scopes also
+affects the default behavior of code execution functions that implicitly
+target :func:`!locals` if no explicit namespace is provided
+(such as :func:`exec` and :func:`eval`).
+In previous versions, whether or not changes could be accessed by calling
+:func:`!locals` after calling the code execution function was
+implementation-dependent. In CPython specifically, such code would typically
+appear to work as desired, but could sometimes fail in optimized scopes based
+on other code (including debuggers and code execution tracing tools)
+potentially resetting the shared snapshot in that scope.
+Now, the code will always run against an independent snapshot of
+the local variables in optimized scopes, and hence the changes will never
+be visible in subsequent calls to :func:`!locals`.
+To access the changes made in these cases, an explicit namespace reference
+must now be passed to the relevant function.
+Alternatively, it may make sense to update affected code to use a higher level
+code execution API that returns the resulting code execution namespace
+(e.g. :func:`runpy.run_path` when executing Python files from disk).
+
+To ensure debuggers and similar tools can reliably update local variables in
+scopes affected by this change, :attr:`FrameType.f_locals <frame.f_locals>` now
+returns a write-through proxy to the frame's local and locally referenced
+nonlocal variables in these scopes, rather than returning an inconsistently
+updated shared ``dict`` instance with undefined runtime semantics.
+
+See :pep:`667` for more details, including related C API changes
+and deprecations. Porting notes are also provided below for the affected
+:ref:`Python APIs <pep667-porting-notes-py>` and :ref:`C APIs
+<pep667-porting-notes-c>`.
+
+(PEP and implementation contributed by Mark Shannon and Tian Gao in
+:gh:`74929`. Documentation updates provided by Guido van Rossum and
+Alyssa Coghlan.)
+
+
+.. _whatsnew313-platform-support:
+
+Support for mobile platforms
+----------------------------
 
-The free-threaded build still supports optionally running with the GIL
-enabled at runtime using the environment variable :envvar:`PYTHON_GIL` or
-the command line option :option:`-X gil`.
+:pep:`730`: iOS is now a :pep:`11` supported platform, with the
+``arm64-apple-ios`` and ``arm64-apple-ios-simulator`` targets at tier 3
+(iPhone and iPad devices released after 2013 and the Xcode iOS simulator
+running on Apple silicon hardware, respectively).
+``x86_64-apple-ios-simulator``
+(the Xcode iOS simulator running on older ``x86_64`` hardware)
+is not a tier 3 supported platform, but will have best-effort support.
+(PEP written and implementation contributed by Russell Keith-Magee in
+:gh:`114099`.)
 
-To check if the current interpreter is configured with ``--disable-gil``,
-use ``sysconfig.get_config_var("Py_GIL_DISABLED")``. To check if the :term:`GIL`
-is actually disabled in the running process, the :func:`!sys._is_gil_enabled`
-function can be used.
+:pep:`738`: Android is now a :pep:`11` supported platform, with the
+``aarch64-linux-android`` and ``x86_64-linux-android`` targets at tier 3.
+The 32-bit targets ``arm-linux-androideabi`` and ``i686-linux-android``
+are not tier 3 supported platforms, but will have best-effort support.
+(PEP written and implementation contributed by Malcolm Smith in
+:gh:`116622`.)
 
-C-API extension modules need to be built specifically for the free-threaded
-build. Extensions that support running with the :term:`GIL` disabled should
-use the :c:data:`Py_mod_gil` slot. Extensions using single-phase init should
-use :c:func:`PyUnstable_Module_SetGIL` to indicate whether they support
-running with the GIL disabled. Importing C extensions that don't use these
-mechanisms will cause the GIL to be enabled, unless the GIL was explicitly
-disabled with the :envvar:`PYTHON_GIL` environment variable or the
-:option:`-X gil=0` option.
+.. seealso:: :pep:`730`, :pep:`738`
 
-pip 24.1b1 or newer is required to install packages with C extensions in the
-free-threaded build.
 
 Other Language Changes
 ======================
 
-* Allow the *count* argument of :meth:`str.replace` to be a keyword.
-  (Contributed by Hugo van Kemenade in :gh:`106487`.)
+* The compiler now strips common leading whitespace
+  from every line in a docstring.
+  This reduces the size of the :term:`bytecode cache <bytecode>`
+  (such as ``.pyc`` files), with reductions in file size of around 5%,
+  for example in :mod:`!sqlalchemy.orm.session` from SQLAlchemy 2.0.
+  This change affects tools that use docstrings, such as :mod:`doctest`.
+
+  .. doctest::
+
+     >>> def spam():
+     ...     """
+     ...         This is a docstring with
+     ...           leading whitespace.
+     ...
+     ...         It even has multiple paragraphs!
+     ...     """
+     ...
+     >>> spam.__doc__
+     '\nThis is a docstring with\n  leading whitespace.\n\nIt even has multiple paragraphs!\n'
 
-* Compiler now strip indents from docstrings.
-  This will reduce the size of :term:`bytecode cache <bytecode>` (e.g. ``.pyc`` file).
-  For example, cache file size for ``sqlalchemy.orm.session`` in SQLAlchemy 2.0
-  is reduced by about 5%.
-  This change will affect tools using docstrings, like :mod:`doctest`.
   (Contributed by Inada Naoki in :gh:`81283`.)
 
-* The :func:`compile` built-in can now accept a new flag,
-  ``ast.PyCF_OPTIMIZED_AST``, which is similar to ``ast.PyCF_ONLY_AST``
-  except that the returned ``AST`` is optimized according to the value
-  of the ``optimize`` argument.
-  (Contributed by Irit Katriel in :gh:`108113`).
-
-* :mod:`multiprocessing`, :mod:`concurrent.futures`, :mod:`compileall`:
-  Replace :func:`os.cpu_count` with :func:`os.process_cpu_count` to select the
-  default number of worker threads and processes. Get the CPU affinity
-  if supported.
-  (Contributed by Victor Stinner in :gh:`109649`.)
-
-* :func:`os.path.realpath` now resolves MS-DOS style file names even if
-  the file is not accessible.
-  (Contributed by Moonsik Park in :gh:`82367`.)
-
-* Fixed a bug where a :keyword:`global` declaration in an :keyword:`except` block
-  is rejected when the global is used in the :keyword:`else` block.
-  (Contributed by Irit Katriel in :gh:`111123`.)
-
-* Many functions now emit a warning if a boolean value is passed as
-  a file descriptor argument.
-  This can help catch some errors earlier.
-  (Contributed by Serhiy Storchaka in :gh:`82626`.)
-
-* Added a new environment variable :envvar:`PYTHON_FROZEN_MODULES`. It
-  determines whether or not frozen modules are ignored by the import machinery,
-  equivalent of the :option:`-X frozen_modules <-X>` command-line option.
-  (Contributed by Yilei Yang in :gh:`111374`.)
+* :ref:`Annotation scopes <annotation-scopes>` within class scopes
+  can now contain lambdas and comprehensions.
+  Comprehensions that are located within class scopes
+  are not inlined into their parent scope.
 
-* Add :ref:`support for the perf profiler <perf_profiling>` working without
-  frame pointers through the new environment variable
-  :envvar:`PYTHON_PERF_JIT_SUPPORT` and command-line option :option:`-X perf_jit
-  <-X>` (Contributed by Pablo Galindo in :gh:`118518`.)
+  .. code-block:: python
 
-* The new :envvar:`PYTHON_HISTORY` environment variable can be used to change
-  the location of a ``.python_history`` file.
-  (Contributed by Levi Sabah, Zackery Spytz and Hugo van Kemenade in
-  :gh:`73965`.)
+     class C[T]:
+         type Alias = lambda: T
 
-* Add :exc:`PythonFinalizationError` exception. This exception derived from
-  :exc:`RuntimeError` is raised when an operation is blocked during
-  the :term:`Python finalization <interpreter shutdown>`.
+  (Contributed by Jelle Zijlstra in :gh:`109118` and :gh:`118160`.)
 
-  The following functions now raise PythonFinalizationError, instead of
-  :exc:`RuntimeError`:
+* :ref:`Future statements <future>` are no longer triggered by
+  relative imports of the :mod:`__future__` module,
+  meaning that statements of the form ``from .__future__ import ...``
+  are now simply standard relative imports, with no special features activated.
+  (Contributed by Jeremiah Gabriel Pascual in :gh:`118216`.)
 
-  * :func:`_thread.start_new_thread`.
-  * :class:`subprocess.Popen`.
-  * :func:`os.fork`.
-  * :func:`os.forkpty`.
+* :keyword:`global` declarations are now permitted in :keyword:`except` blocks
+  when that global is used in the :keyword:`else` block.
+  Previously this raised an erroneous :exc:`SyntaxError`.
+  (Contributed by Irit Katriel in :gh:`111123`.)
 
-  (Contributed by Victor Stinner in :gh:`114570`.)
+* Add :envvar:`PYTHON_FROZEN_MODULES`, a new environment variable that
+  determines whether frozen modules are ignored by the import machinery,
+  equivalent to the :option:`-X frozen_modules <-X>` command-line option.
+  (Contributed by Yilei Yang in :gh:`111374`.)
 
-* Added :attr:`!name` and :attr:`!mode` attributes for compressed
-  and archived file-like objects in modules :mod:`bz2`, :mod:`lzma`,
-  :mod:`tarfile` and :mod:`zipfile`.
-  (Contributed by Serhiy Storchaka in :gh:`115961`.)
+* Add :ref:`support for the perf profiler <perf_profiling>` working
+  without `frame pointers <https://en.wikipedia.org/wiki/Call_stack>`_ through
+  the new environment variable :envvar:`PYTHON_PERF_JIT_SUPPORT`
+  and command-line option :option:`-X perf_jit <-X>`.
+  (Contributed by Pablo Galindo in :gh:`118518`.)
 
-* Allow controlling Expat >=2.6.0 reparse deferral (:cve:`2023-52425`)
-  by adding five new methods:
+* The location of a :file:`.python_history` file can be changed via the
+  new :envvar:`PYTHON_HISTORY` environment variable.
+  (Contributed by Levi Sabah, Zackery Spytz and Hugo van Kemenade
+  in :gh:`73965`.)
 
-  * :meth:`xml.etree.ElementTree.XMLParser.flush`
-  * :meth:`xml.etree.ElementTree.XMLPullParser.flush`
-  * :meth:`xml.parsers.expat.xmlparser.GetReparseDeferralEnabled`
-  * :meth:`xml.parsers.expat.xmlparser.SetReparseDeferralEnabled`
-  * :meth:`!xml.sax.expatreader.ExpatParser.flush`
+* Classes have a new :attr:`~type.__static_attributes__` attribute.
+  This is populated by the compiler with a tuple of the class's attribute names
+  which are assigned through ``self.<name>`` from any function in its body.
+  (Contributed by Irit Katriel in :gh:`115775`.)
 
-  (Contributed by Sebastian Pipping in :gh:`115623`.)
+* The compiler now creates a :attr:`!__firstlineno__` attribute on classes
+  with the line number of the first line of the class definition.
+  (Contributed by Serhiy Storchaka in :gh:`118465`.)
 
-* The :func:`ssl.create_default_context` API now includes
-  :data:`ssl.VERIFY_X509_PARTIAL_CHAIN` and :data:`ssl.VERIFY_X509_STRICT`
-  in its default flags.
+* The :func:`exec` and :func:`eval` builtins now accept
+  the *globals* and *locals* arguments as keywords.
+  (Contributed by Raphael Gaschignard in :gh:`105879`)
 
-  .. note::
+* The :func:`compile` builtin now accepts a new flag,
+  ``ast.PyCF_OPTIMIZED_AST``, which is similar to ``ast.PyCF_ONLY_AST``
+  except that the returned AST is optimized according to
+  the value of the *optimize* argument.
+  (Contributed by Irit Katriel in :gh:`108113`).
 
-   :data:`ssl.VERIFY_X509_STRICT` may reject pre-:rfc:`5280` or malformed
-   certificates that the underlying OpenSSL implementation otherwise would
-   accept. While disabling this is not recommended, you can do so using::
+* Add a :attr:`~property.__name__` attribute on :class:`property` objects.
+  (Contributed by Eugene Toder in :gh:`101860`.)
 
-      ctx = ssl.create_default_context()
-      ctx.verify_flags &= ~ssl.VERIFY_X509_STRICT
+* Add :exc:`PythonFinalizationError`, a new exception derived from
+  :exc:`RuntimeError` and used to signal when operations are blocked
+  during :term:`finalization <interpreter shutdown>`.
+  The following callables now raise :exc:`!PythonFinalizationError`,
+  instead of :exc:`RuntimeError`:
 
-  (Contributed by William Woodruff in :gh:`112389`.)
+  * :func:`_thread.start_new_thread`
+  * :func:`os.fork`
+  * :func:`os.forkpty`
+  * :class:`subprocess.Popen`
 
-* The :class:`configparser.ConfigParser` now accepts unnamed sections before named
-  ones if configured to do so.
-  (Contributed by Pedro Sousa Lacerda in :gh:`66449`.)
+  (Contributed by Victor Stinner in :gh:`114570`.)
 
-* :ref:`annotation scope <annotation-scopes>` within class scopes can now
-  contain lambdas and comprehensions. Comprehensions that are located within
-  class scopes are not inlined into their parent scope. (Contributed by
-  Jelle Zijlstra in :gh:`109118` and :gh:`118160`.)
+* Allow the *count* argument of :meth:`str.replace` to be a keyword.
+  (Contributed by Hugo van Kemenade in :gh:`106487`.)
 
-* Classes have a new :attr:`!__firstlineno__` attribute,
-  populated by the compiler, with the line number of the first line
-  of the class definition.
-  (Contributed by Serhiy Storchaka in :gh:`118465`.)
+* Many functions now emit a warning if a boolean value is passed as
+  a file descriptor argument.
+  This can help catch some errors earlier.
+  (Contributed by Serhiy Storchaka in :gh:`82626`.)
 
-* ``from __future__ import ...`` statements are now just normal
-  relative imports if dots are present before the module name.
-  (Contributed by Jeremiah Gabriel Pascual in :gh:`118216`.)
+* Added :attr:`!name` and :attr:`!mode` attributes
+  for compressed and archived file-like objects in
+  the :mod:`bz2`, :mod:`lzma`, :mod:`tarfile`, and :mod:`zipfile` modules.
+  (Contributed by Serhiy Storchaka in :gh:`115961`.)
 
 
 New Modules
 ===========
 
-* None.
+* :mod:`dbm.sqlite3`: An SQLite backend for :mod:`dbm`.
+  (Contributed by Raymond Hettinger and Erlend E. Aasland in :gh:`100414`.)
 
 
 Improved Modules
 ================
 
+
 argparse
 --------
 
-* Add parameter *deprecated* in methods
-  :meth:`~argparse.ArgumentParser.add_argument` and :meth:`!add_parser`
-  which allows to deprecate command-line options, positional arguments and
-  subcommands.
+* Add the *deprecated* parameter to the
+  :meth:`~argparse.ArgumentParser.add_argument`
+  and :meth:`!add_parser` methods, to enable deprecating
+  command-line options, positional arguments, and subcommands.
   (Contributed by Serhiy Storchaka in :gh:`83648`.)
 
+
 array
 -----
 
-* Add ``'w'`` type code (``Py_UCS4``) that can be used for Unicode strings.
-  It can be used instead of ``'u'`` type code, which is deprecated.
+* Add the ``'w'`` type code (``Py_UCS4``) for Unicode characters.
+  It should be used instead of the deprecated ``'u'`` type code.
   (Contributed by Inada Naoki in :gh:`80480`.)
 
-* Add ``clear()`` method in order to implement ``MutableSequence``.
+* Register :class:`array.array` as a :class:`~collections.abc.MutableSequence`
+  by implementing the :meth:`~array.array.clear` method.
   (Contributed by Mike Zimin in :gh:`114894`.)
 
+
 ast
 ---
 
-* The constructors of node types in the :mod:`ast` module are now stricter
-  in the arguments they accept, and have more intuitive behaviour when
-  arguments are omitted.
+* The constructors of node types in the :mod:`ast` module are now
+  stricter in the arguments they accept,
+  with more intuitive behavior when arguments are omitted.
 
   If an optional field on an AST node is not included as an argument when
   constructing an instance, the field will now be set to ``None``. Similarly,
-  if a list field is omitted, that field will now be set to an empty list.
-  (Previously, in both cases, the attribute would be missing on the newly
+  if a list field is omitted, that field will now be set to an empty list,
+  and if an :class:`!expr_context` field is omitted, it defaults to
+  :class:`Load() <ast.Load>`.
+  (Previously, in all cases, the attribute would be missing on the newly
   constructed AST node instance.)
 
-  If other arguments are omitted, a :exc:`DeprecationWarning` is emitted.
-  This will cause an exception in Python 3.15. Similarly, passing a keyword
-  argument that does not map to a field on the AST node is now deprecated,
+  In all other cases, where a required argument is omitted,
+  the node constructor will emit a :exc:`DeprecationWarning`.
+  This will raise an exception in Python 3.15.
+  Similarly, passing a keyword argument to the constructor
+  that does not map to a field on the AST node is now deprecated,
   and will raise an exception in Python 3.15.
 
-  These changes do not apply to user-defined subclasses of :class:`ast.AST`,
-  unless the class opts in to the new behavior by setting the attribute
-  :attr:`ast.AST._field_types`.
+  These changes do not apply to user-defined subclasses of :class:`ast.AST`
+  unless the class opts in to the new behavior
+  by defining the :attr:`.AST._field_types` mapping.
 
-  (Contributed by Jelle Zijlstra in :gh:`105858` and :gh:`117486`.)
+  (Contributed by Jelle Zijlstra in :gh:`105858`, :gh:`117486`, and :gh:`118851`.)
 
 * :func:`ast.parse` now accepts an optional argument *optimize*
-  which is passed on to the :func:`compile` built-in. This makes it
-  possible to obtain an optimized AST.
+  which is passed on to :func:`compile`.
+  This makes it possible to obtain an optimized AST.
   (Contributed by Irit Katriel in :gh:`108113`.)
 
+
 asyncio
 -------
 
+* :func:`asyncio.as_completed` now returns an object that is both an
+  :term:`asynchronous iterator` and a plain :term:`iterator`
+  of :term:`awaitables <awaitable>`.
+  The awaitables yielded by asynchronous iteration include original task
+  or future objects that were passed in,
+  making it easier to associate results with the tasks being completed.
+  (Contributed by Justin Arthur in :gh:`77714`.)
+
 * :meth:`asyncio.loop.create_unix_server` will now automatically remove
   the Unix socket when the server is closed.
   (Contributed by Pierre Ossman in :gh:`111246`.)
 
-* :meth:`asyncio.DatagramTransport.sendto` will now send zero-length
-  datagrams if called with an empty bytes object. The transport flow
-  control also now accounts for the datagram header when calculating
-  the buffer size.
+* :meth:`.DatagramTransport.sendto` will now send zero-length
+  datagrams if called with an empty bytes object.
+  The transport flow control also now accounts for the datagram header
+  when calculating the buffer size.
   (Contributed by Jamie Phan in :gh:`115199`.)
 
-* Add :meth:`asyncio.Server.close_clients` and
-  :meth:`asyncio.Server.abort_clients` methods which allow to more
-  forcefully close an asyncio server.
-  (Contributed by Pierre Ossman in :gh:`113538`.)
+* Add :meth:`Queue.shutdown <asyncio.Queue.shutdown>`
+  and :exc:`~asyncio.QueueShutDown` to manage queue termination.
+  (Contributed by Laurie Opperman and Yves Duprat in :gh:`104228`.)
 
-* :func:`asyncio.as_completed` now returns an object that is both an
-  :term:`asynchronous iterator` and a plain :term:`iterator` of awaitables.
-  The awaitables yielded by asynchronous iteration include original task or
-  future objects that were passed in, making it easier to associate results
-  with the tasks being completed.
-  (Contributed by Justin Arthur in :gh:`77714`.)
+* Add the :meth:`.Server.close_clients` and :meth:`.Server.abort_clients`
+  methods, which more forcefully close an asyncio server.
+  (Contributed by Pierre Ossman in :gh:`113538`.)
 
-* When :func:`asyncio.TaskGroup.create_task` is called on an inactive
-  :class:`asyncio.TaskGroup`, the given coroutine will be closed (which
-  prevents a :exc:`RuntimeWarning` about the given coroutine being
-  never awaited).
-  (Contributed by Arthur Tacca and Jason Zhang in :gh:`115957`.)
+* Accept a tuple of separators in :meth:`.StreamReader.readuntil`,
+  stopping when any one of them is encountered.
+  (Contributed by Bruce Merry in :gh:`81322`.)
 
-* Improved behavior of :class:`asyncio.TaskGroup` when an external cancellation
-  collides with an internal cancellation. For example, when two task groups
-  are nested and both experience an exception in a child task simultaneously,
-  it was possible that the outer task group would hang, because its internal
-  cancellation was swallowed by the inner task group.
+* Improve the behavior of :class:`~asyncio.TaskGroup` when
+  an external cancellation collides with an internal cancellation.
+  For example, when two task groups are nested
+  and both experience an exception in a child task simultaneously,
+  it was possible that the outer task group would hang,
+  because its internal cancellation was swallowed by the inner task group.
 
-  In the case where a task group is cancelled externally and also must
-  raise an :exc:`ExceptionGroup`, it will now call the parent task's
-  :meth:`~asyncio.Task.cancel` method.  This ensures that a
-  :exc:`asyncio.CancelledError` will be raised at the next
-  :keyword:`await`, so the cancellation is not lost.
+  In the case where a task group is cancelled externally
+  and also must raise an :exc:`ExceptionGroup`,
+  it will now call the parent task's :meth:`~asyncio.Task.cancel` method.
+  This ensures that a :exc:`~asyncio.CancelledError` will be raised
+  at the next :keyword:`await`, so the cancellation is not lost.
 
-  An added benefit of these changes is that task groups now preserve the
-  cancellation count (:meth:`asyncio.Task.cancelling`).
+  An added benefit of these changes is that task groups now preserve
+  the cancellation count (:meth:`~asyncio.Task.cancelling`).
 
-  In order to handle some corner cases, :meth:`asyncio.Task.uncancel` may now
-  reset the undocumented ``_must_cancel`` flag when the cancellation count
-  reaches zero.
+  In order to handle some corner cases, :meth:`~asyncio.Task.uncancel` may now
+  reset the undocumented ``_must_cancel`` flag
+  when the cancellation count reaches zero.
 
   (Inspired by an issue reported by Arthur Tacca in :gh:`116720`.)
 
-* Add :meth:`asyncio.Queue.shutdown` (along with
-  :exc:`asyncio.QueueShutDown`) for queue termination.
-  (Contributed by Laurie Opperman and Yves Duprat in :gh:`104228`.)
+* When :meth:`.TaskGroup.create_task` is called on an inactive
+  :class:`~asyncio.TaskGroup`, the given coroutine will be closed (which
+  prevents a :exc:`RuntimeWarning` about the given coroutine being
+  never awaited).
+  (Contributed by Arthur Tacca and Jason Zhang in :gh:`115957`.)
 
-* Accept a tuple of separators in :meth:`asyncio.StreamReader.readuntil`,
-  stopping when one of them is encountered.
-  (Contributed by Bruce Merry in :gh:`81322`.)
 
 base64
 ------
 
-* Add :func:`base64.z85encode` and :func:`base64.z85decode` functions which allow encoding
-  and decoding Z85 data.
-  See `Z85  specification <https://rfc.zeromq.org/spec/32/>`_ for more information.
+* Add :func:`~base64.z85encode` and :func:`~base64.z85decode` functions
+  for encoding :class:`bytes` as `Z85 data`_
+  and decoding Z85-encoded data to :class:`!bytes`.
   (Contributed by Matan Perelman in :gh:`75299`.)
 
+  .. _Z85 data: https://rfc.zeromq.org/spec/32/
+
+
+compileall
+----------
+
+* The default number of worker threads and processes is now selected using
+  :func:`os.process_cpu_count` instead of :func:`os.cpu_count`.
+  (Contributed by Victor Stinner in :gh:`109649`.)
+
+
+concurrent.futures
+------------------
+
+* The default number of worker threads and processes is now selected using
+  :func:`os.process_cpu_count` instead of :func:`os.cpu_count`.
+  (Contributed by Victor Stinner in :gh:`109649`.)
+
+
+configparser
+------------
+
+* :class:`~configparser.ConfigParser` now has support for unnamed sections,
+  which allows for top-level key-value pairs.
+  This can be enabled with the new *allow_unnamed_section* parameter.
+  (Contributed by Pedro Sousa Lacerda in :gh:`66449`.)
+
+
 copy
 ----
 
-* Add :func:`copy.replace` function which allows to create a modified copy of
-  an object, which is especially useful for immutable objects.
-  It supports named tuples created with the factory function
-  :func:`collections.namedtuple`, :class:`~dataclasses.dataclass` instances,
-  various :mod:`datetime` objects, :class:`~inspect.Signature` objects,
-  :class:`~inspect.Parameter` objects, :ref:`code object <code-objects>`, and
-  any user classes which define the :meth:`!__replace__` method.
+* The new :func:`~copy.replace` function and the :meth:`replace protocol
+  <object.__replace__>` make creating modified copies of objects much simpler.
+  This is especially useful when working with immutable objects.
+  The following types support the :func:`~copy.replace` function
+  and implement the replace protocol:
+
+  * :func:`collections.namedtuple`
+  * :class:`dataclasses.dataclass`
+  * :class:`datetime.datetime`, :class:`datetime.date`, :class:`datetime.time`
+  * :class:`inspect.Signature`, :class:`inspect.Parameter`
+  * :class:`types.SimpleNamespace`
+  * :ref:`code objects <code-objects>`
+
+  Any user-defined class can also support :func:`copy.replace` by defining
+  the :meth:`~object.__replace__` method.
   (Contributed by Serhiy Storchaka in :gh:`108751`.)
 
+
+ctypes
+------
+
+* As a consequence of necessary internal refactoring, initialization of
+  internal metaclasses now happens in ``__init__`` rather
+  than in ``__new__``. This affects projects that subclass these internal
+  metaclasses to provide custom initialization.
+  Generally:
+
+  - Custom logic that was done in ``__new__`` after calling ``super().__new__``
+    should be moved to ``__init__``.
+  - To create a class, call the metaclass, not only the metaclass's
+    ``__new__`` method.
+
+  See :gh:`124520` for discussion and links to changes in some affected
+  projects.
+
+* :class:`ctypes.Structure` objects have a new :attr:`~ctypes.Structure._align_`
+  attribute which allows the alignment of the structure being packed to/from
+  memory to be specified explicitly.
+  (Contributed by Matt Sanderson in :gh:`112433`)
+
 dbm
 ---
 
-* Add :meth:`dbm.gnu.gdbm.clear` and :meth:`dbm.ndbm.ndbm.clear`  methods that remove all items
-  from the database.
+* Add :mod:`dbm.sqlite3`, a new module which implements an SQLite backend,
+  and make it the default :mod:`!dbm` backend.
+  (Contributed by Raymond Hettinger and Erlend E. Aasland in :gh:`100414`.)
+
+* Allow removing all items from the database through
+  the new :meth:`.gdbm.clear` and :meth:`.ndbm.clear` methods.
   (Contributed by Donghee Na in :gh:`107122`.)
 
-* Add new :mod:`dbm.sqlite3` backend, and make it the default :mod:`!dbm` backend.
-  (Contributed by Raymond Hettinger and Erlend E. Aasland in :gh:`100414`.)
 
 dis
 ---
 
 * Change the output of :mod:`dis` module functions to show logical
   labels for jump targets and exception handlers, rather than offsets.
-  The offsets can be added with the new ``-O`` command line option or
-  the ``show_offsets`` parameter.
+  The offsets can be added with the new
+  :option:`-O <dis --show-offsets>` command-line option
+  or the *show_offsets* argument.
   (Contributed by Irit Katriel in :gh:`112137`.)
 
+* :meth:`~dis.get_instructions` no longer represents cache entries
+  as separate instructions.
+  Instead, it returns them as part of the :class:`~dis.Instruction`,
+  in the new *cache_info* field.
+  The *show_caches* argument to :meth:`~dis.get_instructions` is deprecated
+  and no longer has any effect.
+  (Contributed by Irit Katriel in :gh:`112962`.)
+
+
 .. _whatsnew313-doctest:
 
 doctest
 -------
 
-* Color is added to the output by default.
+* :mod:`doctest` output is now colored by default.
   This can be controlled via the new :envvar:`PYTHON_COLORS` environment
-  variable as well as the canonical |NO_COLOR|_ and |FORCE_COLOR|_ environment
-  variables. See also :ref:`using-on-controlling-color`.
+  variable as well as the canonical |NO_COLOR|_
+  and |FORCE_COLOR|_ environment variables.
+  See also :ref:`using-on-controlling-color`.
   (Contributed by Hugo van Kemenade in :gh:`117225`.)
 
-* The :meth:`doctest.DocTestRunner.run` method now counts the number of skipped
-  tests. Add :attr:`doctest.DocTestRunner.skips` and
-  :attr:`doctest.TestResults.skipped` attributes.
+* The :meth:`.DocTestRunner.run` method now counts the number of skipped tests.
+  Add the :attr:`.DocTestRunner.skips` and :attr:`.TestResults.skipped` attributes.
   (Contributed by Victor Stinner in :gh:`108794`.)
 
+
 email
 -----
 
-* :func:`email.utils.getaddresses` and :func:`email.utils.parseaddr` now return
-  ``('', '')`` 2-tuples in more situations where invalid email addresses are
-  encountered instead of potentially inaccurate values. Add optional *strict*
-  parameter to these two functions: use ``strict=False`` to get the old
-  behavior, accept malformed inputs.
-  ``getattr(email.utils, 'supports_strict_parsing', False)`` can be used to
-  check if the *strict* parameter is available.
+* Headers with embedded newlines are now quoted on output.
+  The :mod:`~email.generator` will now refuse to serialize (write) headers
+  that are improperly folded or delimited, such that they would be parsed as
+  multiple headers or joined with adjacent data.
+  If you need to turn this safety feature off,
+  set :attr:`~email.policy.Policy.verify_generated_headers`.
+  (Contributed by Bas Bloemsaat and Petr Viktorin in :gh:`121650`.)
+
+* :func:`~email.utils.getaddresses` and :func:`~email.utils.parseaddr` now
+  return ``('', '')`` pairs in more situations where invalid email addresses
+  are encountered instead of potentially inaccurate values.
+  The two functions have a new optional *strict* parameter (default ``True``).
+  To get the old behavior (accepting malformed input), use ``strict=False``.
+  ``getattr(email.utils, 'supports_strict_parsing', False)`` can be used
+  to check if the *strict* parameter is available.
   (Contributed by Thomas Dwyer and Victor Stinner for :gh:`102988` to improve
   the :cve:`2023-27043` fix.)
 
+
+enum
+----
+
+* :class:`~enum.EnumDict` has been made public to better support subclassing
+  :class:`~enum.EnumType`.
+
+
 fractions
 ---------
 
-* Formatting for objects of type :class:`fractions.Fraction` now supports
-  the standard format specification mini-language rules for fill, alignment,
-  sign handling, minimum width and grouping. (Contributed by Mark Dickinson
-  in :gh:`111320`.)
-
-gc
---
+* :class:`~fractions.Fraction` objects now support the standard
+  :ref:`format specification mini-language <formatspec>` rules
+  for fill, alignment, sign handling, minimum width, and grouping.
+  (Contributed by Mark Dickinson in :gh:`111320`.)
 
-* The cyclic garbage collector is now incremental, which changes the meanings
-  of the results of :meth:`gc.get_threshold` and :meth:`gc.set_threshold` as
-  well as :meth:`gc.get_count` and :meth:`gc.get_stats`.
-
-  * :meth:`gc.get_threshold` returns a three-item tuple for backwards compatibility.
-    The first value is the threshold for young collections, as before; the second
-    value determines the rate at which the old collection is scanned (the
-    default is 10, and higher values mean that the old collection is scanned more slowly).
-    The third value is meaningless and is always zero.
-  * :meth:`gc.set_threshold` ignores any items after the second.
-  * :meth:`gc.get_count` and :meth:`gc.get_stats`
-    return the same format of results as before.
-    The only difference is that instead of the results referring to
-    the young, aging and old generations, the results refer to the
-    young generation and the aging and collecting spaces of the old generation.
-
-  In summary, code that attempted to manipulate the behavior of the cycle GC may
-  not work exactly as intended, but it is very unlikely to be harmful.
-  All other code will work just fine.
 
 glob
 ----
 
-* Add :func:`glob.translate` function that converts a path specification with
-  shell-style wildcards to a regular expression.
+* Add :func:`~glob.translate`, a function to convert a path specification
+  with shell-style wildcards to a regular expression.
   (Contributed by Barney Gale in :gh:`72904`.)
 
+
 importlib
 ---------
 
-* Previously deprecated :mod:`importlib.resources` functions are un-deprecated:
+* The following functions in :mod:`importlib.resources` now allow accessing
+  a directory (or tree) of resources, using multiple positional arguments
+  (the *encoding* and *errors* arguments in the text-reading functions
+  are now keyword-only):
 
-    * :func:`~importlib.resources.is_resource()`
-    * :func:`~importlib.resources.open_binary()`
-    * :func:`~importlib.resources.open_text()`
-    * :func:`~importlib.resources.path()`
-    * :func:`~importlib.resources.read_binary()`
-    * :func:`~importlib.resources.read_text()`
+  * :func:`~importlib.resources.is_resource`
+  * :func:`~importlib.resources.open_binary`
+  * :func:`~importlib.resources.open_text`
+  * :func:`~importlib.resources.path`
+  * :func:`~importlib.resources.read_binary`
+  * :func:`~importlib.resources.read_text`
 
-  All now allow for a directory (or tree) of resources, using multiple positional
-  arguments.
+  These functions are no longer deprecated and are not scheduled for removal.
+  (Contributed by Petr Viktorin in :gh:`116608`.)
 
-  For text-reading functions, the *encoding* and *errors* must now be given as
-  keyword arguments.
-
-  The :func:`~importlib.resources.contents()` remains deprecated in favor of
-  the full-featured :class:`~importlib.resources.abc.Traversable` API.
+* :func:`~importlib.resources.contents` remains deprecated in favor of
+  the fully-featured :class:`~importlib.resources.abc.Traversable` API.
   However, there is now no plan to remove it.
+  (Contributed by Petr Viktorin in :gh:`116608`.)
 
-  (Contributed by Petr Viktorin in :gh:`106532`.)
 
 io
 --
 
-* The :class:`io.IOBase` finalizer now logs the ``close()`` method errors with
-  :data:`sys.unraisablehook`. Previously, errors were ignored silently by default,
-  and only logged in :ref:`Python Development Mode <devmode>` or on :ref:`Python
-  built on debug mode <debug-build>`.
+* The :class:`~io.IOBase` finalizer now logs any errors raised by
+  the :meth:`~io.IOBase.close` method with :data:`sys.unraisablehook`.
+  Previously, errors were ignored silently by default,
+  and only logged in :ref:`Python Development Mode <devmode>`
+  or when using a :ref:`Python debug build <debug-build>`.
   (Contributed by Victor Stinner in :gh:`62948`.)
 
+
 ipaddress
 ---------
 
-* Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which returns the IPv4-mapped IPv6 address.
+* Add the :attr:`.IPv4Address.ipv6_mapped` property,
+  which returns the IPv4-mapped IPv6 address.
   (Contributed by Charles Machalow in :gh:`109466`.)
+
 * Fix ``is_global`` and ``is_private`` behavior in
-  :class:`~ipaddress.IPv4Address`,
-  :class:`~ipaddress.IPv6Address`,
-  :class:`~ipaddress.IPv4Network` and
-  :class:`~ipaddress.IPv6Network`.
+  :class:`~ipaddress.IPv4Address`, :class:`~ipaddress.IPv6Address`,
+  :class:`~ipaddress.IPv4Network`, and :class:`~ipaddress.IPv6Network`.
+  (Contributed by Jakub Stasiak in :gh:`113171`.)
+
 
 itertools
 ---------
 
-* Added a ``strict`` option to :func:`itertools.batched`.
-  This raises a :exc:`ValueError` if the final batch is shorter
+* :func:`~itertools.batched` has a new *strict* parameter,
+  which raises a :exc:`ValueError` if the final batch is shorter
   than the specified batch size.
   (Contributed by Raymond Hettinger in :gh:`113202`.)
 
+
 marshal
 -------
 
 * Add the *allow_code* parameter in module functions.
-  Passing ``allow_code=False`` prevents serialization and de-serialization of
-  code objects which are incompatible between Python versions.
+  Passing ``allow_code=False`` prevents serialization and de-serialization
+  of code objects which are incompatible between Python versions.
   (Contributed by Serhiy Storchaka in :gh:`113626`.)
 
+
 math
 ----
 
-* A new function :func:`~math.fma` for fused multiply-add operations has been
-  added. This function computes ``x * y + z`` with only a single round, and so
-  avoids any intermediate loss of precision. It wraps the ``fma()`` function
-  provided by C99, and follows the specification of the IEEE 754
-  "fusedMultiplyAdd" operation for special cases.
+* The new function :func:`~math.fma` performs fused multiply-add operations.
+  This computes ``x * y + z`` with only a single round,
+  and so avoids any intermediate loss of precision.
+  It wraps the ``fma()`` function provided by C99,
+  and follows the specification of the IEEE 754 "fusedMultiplyAdd" operation
+  for special cases.
   (Contributed by Mark Dickinson and Victor Stinner in :gh:`73468`.)
 
+
 mimetypes
 ---------
 
-* Add the :func:`~mimetypes.guess_file_type` function which works with file path.
-  Passing file path instead of URL in :func:`~mimetypes.guess_type` is :term:`soft deprecated`.
+* Add the :func:`~mimetypes.guess_file_type` function to guess a MIME type
+  from a filesystem path.
+  Using paths with :func:`~mimetypes.guess_type` is now :term:`soft deprecated`.
   (Contributed by Serhiy Storchaka in :gh:`66543`.)
 
+
 mmap
 ----
 
-* The :class:`mmap.mmap` class now has an :meth:`~mmap.mmap.seekable` method
+* :class:`~mmap.mmap` is now protected from crashing on Windows when the
+  mapped memory is inaccessible due to file system errors or access violations.
+  (Contributed by Jannis Weigend in :gh:`118209`.)
+
+* :class:`~mmap.mmap` has a new :meth:`~mmap.mmap.seekable` method
   that can be used when a seekable file-like object is required.
   The :meth:`~mmap.mmap.seek` method now returns the new absolute position.
   (Contributed by Donghee Na and Sylvie Liberman in :gh:`111835`.)
-* :class:`mmap.mmap` now has a *trackfd* parameter on Unix; if it is ``False``,
-  the file descriptor specified by *fileno* will not be duplicated.
+
+* The new UNIX-only *trackfd* parameter for :class:`~mmap.mmap` controls
+  file descriptor duplication;
+  if false, the file descriptor specified by *fileno* will not be duplicated.
   (Contributed by Zackery Spytz and Petr Viktorin in :gh:`78502`.)
 
-opcode
-------
 
-* Move ``opcode.ENABLE_SPECIALIZATION`` to ``_opcode.ENABLE_SPECIALIZATION``.
-  This field was added in 3.12, it was never documented and is not intended for
-  external usage. (Contributed by Irit Katriel in :gh:`105481`.)
+multiprocessing
+---------------
+
+* The default number of worker threads and processes is now selected using
+  :func:`os.process_cpu_count` instead of :func:`os.cpu_count`.
+  (Contributed by Victor Stinner in :gh:`109649`.)
 
-* Removed ``opcode.is_pseudo``, ``opcode.MIN_PSEUDO_OPCODE`` and
-  ``opcode.MAX_PSEUDO_OPCODE``, which were added in 3.12, were never
-  documented or exposed through ``dis``, and were not intended to be
-  used externally.
 
 os
 --
 
-* Add :func:`os.process_cpu_count` function to get the number of logical CPUs
-  usable by the calling thread of the current process.
+* Add :func:`~os.process_cpu_count` function to get the number
+  of logical CPU cores usable by the calling thread of the current process.
   (Contributed by Victor Stinner in :gh:`109649`.)
 
-* Add a low level interface for Linux's timer notification file descriptors
-  via :func:`os.timerfd_create`,
-  :func:`os.timerfd_settime`, :func:`os.timerfd_settime_ns`,
-  :func:`os.timerfd_gettime`, and :func:`os.timerfd_gettime_ns`,
-  :const:`os.TFD_NONBLOCK`, :const:`os.TFD_CLOEXEC`,
-  :const:`os.TFD_TIMER_ABSTIME`, and :const:`os.TFD_TIMER_CANCEL_ON_SET`
-  (Contributed by Masaru Tsuchiyama in :gh:`108277`.)
-
-* :func:`os.cpu_count` and :func:`os.process_cpu_count` can be overridden through
-  the new environment variable :envvar:`PYTHON_CPU_COUNT` or the new command-line option
-  :option:`-X cpu_count <-X>`. This option is useful for users who need to limit
-  CPU resources of a container system without having to modify the container (application code).
+* :func:`~os.cpu_count` and :func:`~os.process_cpu_count` can be overridden
+  through the new environment variable :envvar:`PYTHON_CPU_COUNT`
+  or the new command-line option :option:`-X cpu_count <-X>`.
+  This option is useful for users who need to limit CPU resources
+  of a container system without having to modify application code
+  or the container itself.
   (Contributed by Donghee Na in :gh:`109595`.)
 
-* Add support of :func:`os.lchmod` and the *follow_symlinks* argument
-  in :func:`os.chmod` on Windows.
-  Note that the default value of *follow_symlinks* in :func:`!os.lchmod` is
-  ``False`` on Windows.
+* Add a :ref:`low level interface <os-timerfd>` to Linux's
+  :manpage:`timer file descriptors <timerfd_create(2)>`
+  via :func:`~os.timerfd_create`,
+  :func:`~os.timerfd_settime`, :func:`~os.timerfd_settime_ns`,
+  :func:`~os.timerfd_gettime`, :func:`~os.timerfd_gettime_ns`,
+  :const:`~os.TFD_NONBLOCK`, :const:`~os.TFD_CLOEXEC`,
+  :const:`~os.TFD_TIMER_ABSTIME`, and :const:`~os.TFD_TIMER_CANCEL_ON_SET`
+  (Contributed by Masaru Tsuchiyama in :gh:`108277`.)
+
+* :func:`~os.lchmod` and the *follow_symlinks* argument of :func:`~os.chmod`
+  are both now available on Windows.
+  Note that the default value of *follow_symlinks*
+  in :func:`!lchmod` is ``False`` on Windows.
   (Contributed by Serhiy Storchaka in :gh:`59616`.)
 
-* Add support of :func:`os.fchmod` and a file descriptor
-  in :func:`os.chmod` on Windows.
+* :func:`~os.fchmod` and support for file descriptors in :func:`~os.chmod`
+  are both now available on Windows.
   (Contributed by Serhiy Storchaka in :gh:`113191`.)
 
-* :func:`os.posix_spawn` now accepts ``env=None``, which makes the newly spawned
-  process use the current process environment.
+* On Windows, :func:`~os.mkdir` and :func:`~os.makedirs` now support passing
+  a *mode* value of ``0o700`` to apply access control to the new directory.
+  This implicitly affects :func:`tempfile.mkdtemp`
+  and is a mitigation for :cve:`2024-4030`.
+  Other values for *mode* continue to be ignored.
+  (Contributed by Steve Dower in :gh:`118486`.)
+
+* :func:`~os.posix_spawn` now accepts ``None`` for the *env* argument,
+  which makes the newly spawned process use the current process environment.
   (Contributed by Jakub Kulik in :gh:`113119`.)
 
-* :func:`os.posix_spawn` gains an :attr:`os.POSIX_SPAWN_CLOSEFROM` attribute for
-  use in ``file_actions=`` on platforms that support
+* :func:`~os.posix_spawn` can now use the :attr:`~os.POSIX_SPAWN_CLOSEFROM`
+  attribute in the *file_actions* parameter on platforms that support
   :c:func:`!posix_spawn_file_actions_addclosefrom_np`.
   (Contributed by Jakub Kulik in :gh:`113117`.)
 
+
 os.path
 -------
 
-* Add :func:`os.path.isreserved` to check if a path is reserved on the current
-  system. This function is only available on Windows.
+* Add :func:`~os.path.isreserved` to check if a path is reserved
+  on the current system.
+  This function is only available on Windows.
   (Contributed by Barney Gale in :gh:`88569`.)
-* On Windows, :func:`os.path.isabs` no longer considers paths starting with
-  exactly one (back)slash to be absolute.
+
+* On Windows, :func:`~os.path.isabs` no longer considers paths
+  starting with exactly one slash (``\`` or ``/``) to be absolute.
   (Contributed by Barney Gale and Jon Foster in :gh:`44626`.)
 
-* Add support of *dir_fd* and *follow_symlinks* keyword arguments in
-  :func:`shutil.chown`.
-  (Contributed by Berker Peksag and Tahia K in :gh:`62308`)
+* :func:`~os.path.realpath` now resolves MS-DOS style file names
+  even if the file is not accessible.
+  (Contributed by Moonsik Park in :gh:`82367`.)
+
 
 pathlib
 -------
 
-* Add :exc:`pathlib.UnsupportedOperation`, which is raised instead of
+* Add :exc:`~pathlib.UnsupportedOperation`, which is raised instead of
   :exc:`NotImplementedError` when a path operation isn't supported.
   (Contributed by Barney Gale in :gh:`89812`.)
 
-* Add :meth:`pathlib.Path.from_uri`, a new constructor to create a :class:`pathlib.Path`
-  object from a 'file' URI (``file://``).
+* Add a new constructor for creating :class:`~pathlib.Path` objects
+  from 'file' URIs (``file:///``), :meth:`.Path.from_uri`.
   (Contributed by Barney Gale in :gh:`107465`.)
 
-* Add :meth:`pathlib.PurePath.full_match` for matching paths with
+* Add :meth:`.PurePath.full_match` for matching paths with
   shell-style wildcards, including the recursive wildcard "``**``".
   (Contributed by Barney Gale in :gh:`73435`.)
 
-* Add :attr:`pathlib.PurePath.parser` class attribute that stores the
-  implementation of :mod:`os.path` used for low-level path parsing and
-  joining: either ``posixpath`` or ``ntpath``.
+* Add the :attr:`.PurePath.parser` class attribute to store the
+  implementation of :mod:`os.path` used
+  for low-level path parsing and joining.
+  This will be either :mod:`!posixpath` or :mod:`!ntpath`.
 
-* Add *recurse_symlinks* keyword-only argument to :meth:`pathlib.Path.glob`
-  and :meth:`~pathlib.Path.rglob`.
+* Add *recurse_symlinks* keyword-only argument to
+  :meth:`.Path.glob` and :meth:`~pathlib.Path.rglob`.
   (Contributed by Barney Gale in :gh:`77609`.)
 
-* Add *follow_symlinks* keyword-only argument to :meth:`~pathlib.Path.is_file`,
-  :meth:`~pathlib.Path.is_dir`, :meth:`~pathlib.Path.owner`,
-  :meth:`~pathlib.Path.group`.
-  (Contributed by Barney Gale in :gh:`105793`, and Kamil Turek in
-  :gh:`107962`.)
-
-* Return files and directories from :meth:`pathlib.Path.glob` and
-  :meth:`~pathlib.Path.rglob` when given a pattern that ends with "``**``". In
-  earlier versions, only directories were returned.
+* :meth:`.Path.glob` and :meth:`~pathlib.Path.rglob`
+  now return files and directories when given a pattern that ends with "``**``".
+  Previously, only directories were returned.
   (Contributed by Barney Gale in :gh:`70303`.)
 
+* Add the *follow_symlinks* keyword-only argument to
+  :meth:`Path.is_file <pathlib.Path.is_file>`,
+  :meth:`Path.is_dir <pathlib.Path.is_dir>`,
+  :meth:`.Path.owner`, and :meth:`.Path.group`.
+  (Contributed by Barney Gale in :gh:`105793` and Kamil Turek in :gh:`107962`.)
+
+
 pdb
 ---
 
-* Add ability to move between chained exceptions during post mortem debugging in :func:`~pdb.pm` using
-  the new ``exceptions [exc_number]`` command for Pdb. (Contributed by Matthias
-  Bussonnier in :gh:`106676`.)
-
-* Expressions/statements whose prefix is a pdb command are now correctly
-  identified and executed.
-  (Contributed by Tian Gao in :gh:`108464`.)
+* :func:`breakpoint` and :func:`~pdb.set_trace` now enter the debugger immediately
+  rather than on the next line of code to be executed. This change prevents the
+  debugger from breaking outside of the context when :func:`!breakpoint` is positioned
+  at the end of the context.
+  (Contributed by Tian Gao in :gh:`118579`.)
 
-* ``sys.path[0]`` will no longer be replaced by the directory of the script
-  being debugged when ``sys.flags.safe_path`` is set (via the :option:`-P`
-  command line option or :envvar:`PYTHONSAFEPATH` environment variable).
+* ``sys.path[0]`` is no longer replaced by the directory of the script
+  being debugged when :attr:`sys.flags.safe_path` is set.
   (Contributed by Tian Gao and Christian Walther in :gh:`111762`.)
 
-* :mod:`zipapp` is supported as a debugging target.
+* :mod:`zipapp` is now supported as a debugging target.
   (Contributed by Tian Gao in :gh:`118501`.)
 
-* ``breakpoint()`` and ``pdb.set_trace()`` now enter the debugger immediately
-  rather than on the next line of code to be executed. This change prevents the
-  debugger from breaking outside of the context when ``breakpoint()`` is positioned
-  at the end of the context.
-  (Contributed by Tian Gao in :gh:`118579`.)
+* Add ability to move between chained exceptions during
+  post-mortem debugging in :func:`~pdb.pm` using
+  the new :pdbcmd:`exceptions [exc_number] <exceptions>` command for Pdb.
+  (Contributed by Matthias Bussonnier in :gh:`106676`.)
+
+* Expressions and statements whose prefix is a pdb command are now correctly
+  identified and executed.
+  (Contributed by Tian Gao in :gh:`108464`.)
+
 
 queue
 -----
 
-* Add :meth:`queue.Queue.shutdown` (along with :exc:`queue.ShutDown`) for queue
-  termination.
+* Add :meth:`Queue.shutdown <queue.Queue.shutdown>` and :exc:`~queue.ShutDown`
+  to manage queue termination.
   (Contributed by Laurie Opperman and Yves Duprat in :gh:`104750`.)
 
+
 random
 ------
 
 * Add a :ref:`command-line interface <random-cli>`.
-  (Contributed by Hugo van Kemenade in :gh:`54321`.)
+  (Contributed by Hugo van Kemenade in :gh:`118131`.)
+
 
 re
 --
-* Rename :exc:`!re.error` to :exc:`re.PatternError` for improved clarity.
+
+* Rename :exc:`!re.error` to :exc:`~re.PatternError` for improved clarity.
   :exc:`!re.error` is kept for backward compatibility.
 
+
+shutil
+------
+
+* Support the *dir_fd* and *follow_symlinks* keyword arguments
+  in :func:`~shutil.chown`.
+  (Contributed by Berker Peksag and Tahia K in :gh:`62308`)
+
+
 site
 ----
 
-* :file:`.pth` files are now decoded by UTF-8 first, and then by the
-  :term:`locale encoding` if the UTF-8 decoding fails.
+* :file:`.pth` files are now decoded using UTF-8 first,
+  and then with the :term:`locale encoding` if UTF-8 decoding fails.
   (Contributed by Inada Naoki in :gh:`117802`.)
 
+
 sqlite3
 -------
 
-* A :exc:`ResourceWarning` is now emitted if a :class:`sqlite3.Connection`
+* A :exc:`ResourceWarning` is now emitted if a :class:`~sqlite3.Connection`
   object is not :meth:`closed <sqlite3.Connection.close>` explicitly.
   (Contributed by Erlend E. Aasland in :gh:`105539`.)
 
-* Add *filter* keyword-only parameter to :meth:`sqlite3.Connection.iterdump`
+* Add the *filter* keyword-only parameter to :meth:`.Connection.iterdump`
   for filtering database objects to dump.
   (Contributed by Mariusz Felisiak in :gh:`91602`.)
 
-statistics
-----------
 
-* Add :func:`statistics.kde` for kernel density estimation.
-  This makes it possible to estimate a continuous probability density function
-  from a fixed number of discrete samples.  Also added :func:`statistics.kde_random`
-  for sampling from the estimated probability density function.
-  (Contributed by Raymond Hettinger in :gh:`115863`.)
+ssl
+---
 
-.. _whatsnew313-subprocess:
+* The :func:`~ssl.create_default_context` API now includes
+  :data:`~ssl.VERIFY_X509_PARTIAL_CHAIN` and :data:`~ssl.VERIFY_X509_STRICT`
+  in its default flags.
 
-subprocess
-----------
+  .. note::
 
-* The :mod:`subprocess` module now uses the :func:`os.posix_spawn` function in
-  more situations.  Notably in the default case of ``close_fds=True`` on more
-  recent versions of platforms including Linux, FreeBSD, and Solaris where the
-  C library provides :c:func:`!posix_spawn_file_actions_addclosefrom_np`.
-  On Linux this should perform similar to our existing Linux :c:func:`!vfork`
-  based code.  A private control knob :attr:`!subprocess._USE_POSIX_SPAWN` can
-  be set to ``False`` if you need to force :mod:`subprocess` not to ever use
-  :func:`os.posix_spawn`.  Please report your reason and platform details in
-  the CPython issue tracker if you set this so that we can improve our API
-  selection logic for everyone.
-  (Contributed by Jakub Kulik in :gh:`113117`.)
+     :data:`~ssl.VERIFY_X509_STRICT` may reject pre-:rfc:`5280`
+     or malformed certificates that the underlying OpenSSL implementation
+     might otherwise accept.
+     Whilst disabling this is not recommended, you can do so using:
 
-sys
----
+     .. code-block:: python
 
-* Add the :func:`sys._is_interned` function to test if the string was interned.
-  This function is not guaranteed to exist in all implementations of Python.
-  (Contributed by Serhiy Storchaka in :gh:`78573`.)
+        import ssl
 
-time
+        ctx = ssl.create_default_context()
+        ctx.verify_flags &= ~ssl.VERIFY_X509_STRICT
+
+  (Contributed by William Woodruff in :gh:`112389`.)
+
+
+statistics
+----------
+
+* Add :func:`~statistics.kde` for kernel density estimation.
+  This makes it possible to estimate a continuous probability density function
+  from a fixed number of discrete samples.
+  (Contributed by Raymond Hettinger in :gh:`115863`.)
+
+* Add :func:`~statistics.kde_random` for sampling from an
+  estimated probability density function created by :func:`~statistics.kde`.
+  (Contributed by Raymond Hettinger in :gh:`115863`.)
+
+
+.. _whatsnew313-subprocess:
+
+subprocess
+----------
+
+* The :mod:`subprocess` module now uses the :func:`~os.posix_spawn` function in
+  more situations.
+
+  Notably, when *close_fds* is ``True`` (the default),
+  :func:`~os.posix_spawn` will be used when the C library provides
+  :c:func:`!posix_spawn_file_actions_addclosefrom_np`,
+  which includes recent versions of Linux, FreeBSD, and Solaris.
+  On Linux, this should perform similarly to the existing
+  Linux :c:func:`!vfork` based code.
+
+  A private control knob :attr:`!subprocess._USE_POSIX_SPAWN` can
+  be set to ``False`` if you need to force :mod:`subprocess`
+  to never use :func:`~os.posix_spawn`.
+  Please report your reason and platform details in
+  the :ref:`issue tracker <using-the-tracker>` if you set this
+  so that we can improve our API selection logic for everyone.
+  (Contributed by Jakub Kulik in :gh:`113117`.)
+
+
+sys
+---
+
+* Add the :func:`~sys._is_interned` function to test if a string was interned.
+  This function is not guaranteed to exist in all implementations of Python.
+  (Contributed by Serhiy Storchaka in :gh:`78573`.)
+
+
+tempfile
+--------
+
+* On Windows, the default mode ``0o700`` used by :func:`tempfile.mkdtemp` now
+  limits access to the new directory due to changes to :func:`os.mkdir`.
+  This is a mitigation for :cve:`2024-4030`.
+  (Contributed by Steve Dower in :gh:`118486`.)
+
+
+time
 ----
 
-* On Windows, :func:`time.monotonic()` now uses the
-  ``QueryPerformanceCounter()`` clock to have a resolution better than 1 us,
-  instead of the ``GetTickCount64()`` clock which has a resolution of 15.6 ms.
+* On Windows, :func:`~time.monotonic` now uses the
+  ``QueryPerformanceCounter()`` clock for a resolution of 1 microsecond,
+  instead of the ``GetTickCount64()`` clock which has
+  a resolution of 15.6 milliseconds.
   (Contributed by Victor Stinner in :gh:`88494`.)
 
-* On Windows, :func:`time.time()` now uses the
-  ``GetSystemTimePreciseAsFileTime()`` clock to have a resolution better
-  than 1 μs, instead of the ``GetSystemTimeAsFileTime()`` clock which has a
-  resolution of 15.6 ms.
+* On Windows, :func:`~time.time` now uses the
+  ``GetSystemTimePreciseAsFileTime()`` clock for a resolution of 1 microsecond,
+  instead of the ``GetSystemTimeAsFileTime()`` clock which has
+  a resolution of 15.6 milliseconds.
   (Contributed by Victor Stinner in :gh:`63207`.)
 
 
@@ -1015,20 +1311,21 @@ tkinter
 
 * The :mod:`tkinter` widget method :meth:`!wm_attributes` now accepts
   the attribute name without the minus prefix to get window attributes,
-  e.g. ``w.wm_attributes('alpha')`` and allows to specify attributes and
-  values to set as keyword arguments, e.g. ``w.wm_attributes(alpha=0.5)``.
-  Add new optional keyword-only parameter *return_python_dict*: calling
-  ``w.wm_attributes(return_python_dict=True)`` returns the attributes as
-  a dict instead of a tuple.
+  for example ``w.wm_attributes('alpha')``
+  and allows specifying attributes and values to set as keyword arguments,
+  for example ``w.wm_attributes(alpha=0.5)``.
   (Contributed by Serhiy Storchaka in :gh:`43457`.)
 
-* Add new optional keyword-only parameter *return_ints* in
-  the :meth:`!Text.count` method.
-  Passing ``return_ints=True`` makes it always returning the single count
-  as an integer instead of a 1-tuple or ``None``.
+* :meth:`!wm_attributes` can now return attributes as a :class:`dict`,
+  by using the new optional keyword-only parameter *return_python_dict*.
+  (Contributed by Serhiy Storchaka in :gh:`43457`.)
+
+* :meth:`!Text.count` can now return a simple :class:`int`
+  when the new optional keyword-only parameter *return_ints* is used.
+  Otherwise, the single count is returned as a 1-tuple or ``None``.
   (Contributed by Serhiy Storchaka in :gh:`97928`.)
 
-* Add support of the "vsapi" element type in
+* Support the "vsapi" element type in
   the :meth:`~tkinter.ttk.Style.element_create` method of
   :class:`tkinter.ttk.Style`.
   (Contributed by Serhiy Storchaka in :gh:`68166`.)
@@ -1036,304 +1333,445 @@ tkinter
 * Add the :meth:`!after_info` method for Tkinter widgets.
   (Contributed by Cheryl Sabella in :gh:`77020`.)
 
-* Add the :class:`!PhotoImage` method :meth:`!copy_replace` to copy a region
-  from one image to other image, possibly with pixel zooming and/or
-  subsampling.
-  Add *from_coords* parameter to :class:`!PhotoImage` methods :meth:`!copy()`,
-  :meth:`!zoom()` and :meth:`!subsample()`.
-  Add *zoom* and *subsample* parameters to :class:`!PhotoImage` method
-  :meth:`!copy()`.
+* Add a new :meth:`!copy_replace` method to :class:`!PhotoImage`
+  to copy a region from one image to another,
+  possibly with pixel zooming, subsampling, or both.
+  (Contributed by Serhiy Storchaka in :gh:`118225`.)
+
+* Add *from_coords* parameter to the :class:`!PhotoImage` methods
+  :meth:`!copy`, :meth:`!zoom` and :meth:`!subsample`.
+  Add *zoom* and *subsample* parameters to the :class:`!PhotoImage` method
+  :meth:`!copy`.
   (Contributed by Serhiy Storchaka in :gh:`118225`.)
 
-* Add the :class:`!PhotoImage` methods :meth:`!read` to read
-  an image from a file and :meth:`!data` to get the image data.
-  Add *background* and *grayscale* parameters to :class:`!PhotoImage` method
-  :meth:`!write`.
+* Add the :class:`!PhotoImage` methods
+  :meth:`!read` to read an image from a file
+  and :meth:`!data` to get the image data.
+  Add *background* and *grayscale* parameters to the :meth:`!write` method.
   (Contributed by Serhiy Storchaka in :gh:`118271`.)
 
+
 traceback
 ---------
 
-* Add *show_group* parameter to :func:`traceback.TracebackException.format_exception_only`
-  to format the nested exceptions of a :exc:`BaseExceptionGroup` instance, recursively.
+* Add the :attr:`~traceback.TracebackException.exc_type_str` attribute
+  to :class:`~traceback.TracebackException`,
+  which holds a string display of the *exc_type*.
+  Deprecate the :attr:`~traceback.TracebackException.exc_type` attribute,
+  which holds the type object itself.
+  Add parameter *save_exc_type* (default ``True``)
+  to indicate whether ``exc_type`` should be saved.
+  (Contributed by Irit Katriel in :gh:`112332`.)
+
+* Add a new *show_group* keyword-only parameter to
+  :meth:`.TracebackException.format_exception_only` to (recursively) format
+  the nested exceptions of a :exc:`BaseExceptionGroup` instance.
   (Contributed by Irit Katriel in :gh:`105292`.)
 
-* Add the field *exc_type_str* to :class:`~traceback.TracebackException`, which
-  holds a string display of the *exc_type*. Deprecate the field *exc_type*
-  which holds the type object itself. Add parameter *save_exc_type* (default
-  ``True``) to indicate whether ``exc_type`` should be saved.
-  (Contributed by Irit Katriel in :gh:`112332`.)
 
 types
 -----
 
-* :class:`~types.SimpleNamespace` constructor now allows specifying initial
-  values of attributes as a positional argument which must be a mapping or
-  an iterable of key-value pairs.
+* :class:`~types.SimpleNamespace` can now take a single positional argument
+  to initialise the namespace's arguments.
+  This argument must either be a mapping or an iterable of key-value pairs.
   (Contributed by Serhiy Storchaka in :gh:`108191`.)
 
+
 typing
 ------
 
-* Add :func:`typing.get_protocol_members` to return the set of members
-  defining a :class:`typing.Protocol`. Add :func:`typing.is_protocol` to
-  check whether a class is a :class:`typing.Protocol`. (Contributed by Jelle Zijlstra in
-  :gh:`104873`.)
+* :pep:`705`: Add :data:`~typing.ReadOnly`, a special typing construct
+  to mark a :class:`~typing.TypedDict` item as read-only for type checkers.
+
+* :pep:`742`: Add :data:`~typing.TypeIs`, a typing construct
+  that can be used to instruct a type checker how to narrow a type.
+
+* Add :data:`~typing.NoDefault`, a sentinel object used to represent
+  the defaults of some parameters in the :mod:`typing` module.
+  (Contributed by Jelle Zijlstra in :gh:`116126`.)
 
-* Add :data:`typing.ReadOnly`, a special typing construct to mark
-  an item of a :class:`typing.TypedDict` as read-only for type checkers.
-  See :pep:`705` for more details.
+* Add :func:`~typing.get_protocol_members` to return the set of members
+  defining a :class:`typing.Protocol`.
+  (Contributed by Jelle Zijlstra in :gh:`104873`.)
+
+* Add :func:`~typing.is_protocol` to check whether a class
+  is a :class:`~typing.Protocol`.
+  (Contributed by Jelle Zijlstra in :gh:`104873`.)
+
+* :data:`~typing.ClassVar` can now be nested in :data:`~typing.Final`,
+  and vice versa.
+  (Contributed by Mehdi Drissi in :gh:`89547`.)
 
-* Add :data:`typing.NoDefault`, a sentinel object used to represent the defaults
-  of some parameters in the :mod:`typing` module. (Contributed by Jelle Zijlstra in
-  :gh:`116126`.)
 
 unicodedata
 -----------
 
-* The Unicode database has been updated to version 15.1.0. (Contributed by
-  James Gerity in :gh:`109559`.)
+* Update the Unicode database to `version 15.1.0`__.
+  (Contributed by James Gerity in :gh:`109559`.)
+
+  __ https://www.unicode.org/versions/Unicode15.1.0/
+
 
 venv
 ----
 
-* Add support for adding source control management (SCM) ignore files to a
-  virtual environment's directory. By default, Git is supported. This is
-  implemented as opt-in via the API which can be extended to support other SCMs
-  (:class:`venv.EnvBuilder` and :func:`venv.create`), and opt-out via the CLI
-  (using ``--without-scm-ignore-files``). (Contributed by Brett Cannon in
-  :gh:`108125`.)
+* Add support for creating source control management (SCM) ignore files
+  in a virtual environment's directory.
+  By default, Git is supported.
+  This is implemented as opt-in via the API,
+  which can be extended to support other SCMs
+  (:class:`~venv.EnvBuilder` and :func:`~venv.create`),
+  and opt-out via the CLI, using :option:`!--without-scm-ignore-files`.
+  (Contributed by Brett Cannon in :gh:`108125`.)
+
 
 warnings
 --------
 
-* The new :func:`warnings.deprecated` decorator provides a way to communicate
-  deprecations to :term:`static type checkers <static type checker>` and
-  to warn on usage of deprecated classes and functions. A runtime deprecation
-  warning may also be emitted when a decorated function or class is used at runtime.
-  See :pep:`702`. (Contributed by Jelle Zijlstra in :gh:`104003`.)
+* :pep:`702`: The new :func:`warnings.deprecated` decorator provides a way to
+  communicate deprecations to a :term:`static type checker`
+  and to warn on usage of deprecated classes and functions.
+  A :exc:`DeprecationWarning` may also be emitted when
+  a decorated function or class is used at runtime.
+  (Contributed by Jelle Zijlstra in :gh:`104003`.)
 
-xml.etree.ElementTree
----------------------
+
+xml
+---
+
+* Allow controlling Expat >=2.6.0 reparse deferral (:cve:`2023-52425`)
+  by adding five new methods:
+
+  * :meth:`xml.etree.ElementTree.XMLParser.flush`
+  * :meth:`xml.etree.ElementTree.XMLPullParser.flush`
+  * :meth:`xml.parsers.expat.xmlparser.GetReparseDeferralEnabled`
+  * :meth:`xml.parsers.expat.xmlparser.SetReparseDeferralEnabled`
+  * :meth:`!xml.sax.expatreader.ExpatParser.flush`
+
+  (Contributed by Sebastian Pipping in :gh:`115623`.)
 
 * Add the :meth:`!close` method for the iterator returned by
-  :func:`~xml.etree.ElementTree.iterparse` for explicit cleaning up.
+  :func:`~xml.etree.ElementTree.iterparse` for explicit cleanup.
   (Contributed by Serhiy Storchaka in :gh:`69893`.)
 
+
 zipimport
 ---------
 
-* Gains support for ZIP64 format files.  Everybody loves huge code right?
+* Add support for ZIP64_ format files.
+  Everybody loves huge data, right?
   (Contributed by Tim Hatch in :gh:`94146`.)
 
-.. Add improved modules above alphabetically, not here at the end.
+  .. _ZIP64: https://en.wikipedia.org/wiki/Zip_(file_format)#ZIP64
+
 
 Optimizations
 =============
 
-* :func:`textwrap.indent` is now ~30% faster than before for large input.
+* Several standard library modules have had
+  their import times significantly improved.
+  For example, the import time of the :mod:`typing` module
+  has been reduced by around a third by removing dependencies
+  on :mod:`re` and :mod:`contextlib`.
+  Other modules to enjoy import-time speedups include
+  :mod:`email.utils`, :mod:`enum`, :mod:`functools`,
+  :mod:`importlib.metadata`, and :mod:`threading`.
+  (Contributed by Alex Waygood, Shantanu Jain, Adam Turner, Daniel Hollas,
+  and others in :gh:`109653`.)
+
+* :func:`textwrap.indent` is now around 30% faster than before for large input.
   (Contributed by Inada Naoki in :gh:`107369`.)
 
-* The :mod:`subprocess` module uses :func:`os.posix_spawn` in more situations
-  including the default where ``close_fds=True`` on many modern platforms.  This
-  should provide a noteworthy performance increase launching processes on
-  FreeBSD and Solaris.  See the :ref:`subprocess <whatsnew313-subprocess>`
-  section above for details.
+* The :mod:`subprocess` module now uses the :func:`~os.posix_spawn` function in
+  more situations, including when *close_fds* is ``True`` (the default)
+  on many modern platforms.
+  This should provide a notable performance increase
+  when launching processes on FreeBSD and Solaris.
+  See the :ref:`subprocess <whatsnew313-subprocess>` section above for details.
   (Contributed by Jakub Kulik in :gh:`113117`.)
 
-* Several standard library modules have had their import times significantly
-  improved. For example, the import time of the :mod:`typing` module has been
-  reduced by around a third by removing dependencies on :mod:`re` and
-  :mod:`contextlib`. Other modules to enjoy import-time speedups include
-  :mod:`importlib.metadata`, :mod:`threading`, :mod:`enum`, :mod:`functools`
-  and :mod:`email.utils`.
-  (Contributed by Alex Waygood, Shantanu Jain, Adam Turner, Daniel Hollas and
-  others in :gh:`109653`.)
 
 Removed Modules And APIs
 ========================
 
+
 .. _whatsnew313-pep594:
 
-PEP 594: dead batteries (and other module removals)
----------------------------------------------------
+PEP 594: Remove "dead batteries" from the standard library
+----------------------------------------------------------
 
-* :pep:`594` removed 19 modules from the standard library,
-  deprecated in Python 3.11:
+:pep:`594` proposed removing 19 modules from the standard library,
+colloquially referred to as 'dead batteries' due to their
+historic, obsolete, or insecure status.
+All of the following modules were deprecated in Python 3.11,
+and are now removed:
 
-  * :mod:`!aifc`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!aifc`
+
+  * :pypi:`standard-aifc`:
+    Use the redistribution of ``aifc`` library from PyPI.
 
-  * :mod:`!audioop`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!audioop`
 
-  * :mod:`!chunk`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`audioop-lts`:
+    Use ``audioop-lts`` library from PyPI.
 
-  * :mod:`!cgi` and :mod:`!cgitb`.
+* :mod:`!chunk`
 
-    * ``cgi.FieldStorage`` can typically be replaced with
-      :func:`urllib.parse.parse_qsl` for ``GET`` and ``HEAD`` requests,
-      and the :mod:`email.message` module or :pypi:`multipart`
-      PyPI project for ``POST`` and ``PUT``.
+  * :pypi:`standard-chunk`:
+    Use the redistribution of ``chunk`` library from PyPI.
 
-    * ``cgi.parse()`` can be replaced by calling :func:`urllib.parse.parse_qs`
-      directly on the desired query string, except for ``multipart/form-data``
-      input, which can be handled as described for ``cgi.parse_multipart()``.
+* :mod:`!cgi` and :mod:`!cgitb`
 
-    * ``cgi.parse_header()`` can be replaced with the functionality in the
-      :mod:`email` package, which implements the same MIME RFCs. For example,
-      with :class:`email.message.EmailMessage`::
+  * :class:`!cgi.FieldStorage` can typically be replaced with
+    :func:`urllib.parse.parse_qsl` for ``GET`` and ``HEAD`` requests,
+    and the :mod:`email.message` module or the :pypi:`multipart` library
+    for ``POST`` and ``PUT`` requests.
 
-          from email.message import EmailMessage
-          msg = EmailMessage()
-          msg['content-type'] = 'application/json; charset="utf8"'
-          main, params = msg.get_content_type(), msg['content-type'].params
+  * :func:`!cgi.parse` can be replaced by calling
+    :func:`urllib.parse.parse_qs` directly on the desired query string,
+    unless the input is ``multipart/form-data``,
+    which should be replaced as described below for :func:`!cgi.parse_multipart`.
 
-    * ``cgi.parse_multipart()`` can be replaced with the functionality in the
-      :mod:`email` package (e.g. :class:`email.message.EmailMessage` and
-      :class:`email.message.Message`) which implements the same MIME RFCs, or
-      with the :pypi:`multipart` PyPI project.
+  * :func:`!cgi.parse_header` can be replaced with the functionality
+    in the :mod:`email` package, which implements the same MIME RFCs.
+    For example, with :class:`email.message.EmailMessage`:
 
-    (Contributed by Victor Stinner in :gh:`104773`.)
+    .. code-block:: python
 
-  * :mod:`!crypt` module and its private :mod:`!_crypt` extension.
-    The :mod:`hashlib` module is a potential replacement for certain use cases.
-    Otherwise, the following PyPI projects can be used:
+       from email.message import EmailMessage
 
-    * :pypi:`bcrypt`:
-      Modern password hashing for your software and your servers.
-    * :pypi:`passlib`:
-      Comprehensive password hashing framework supporting over 30 schemes.
-    * :pypi:`argon2-cffi`:
-      The secure Argon2 password hashing algorithm.
-    * :pypi:`legacycrypt`:
-      :mod:`ctypes` wrapper to the POSIX crypt library call and associated functionality.
-    * :pypi:`crypt_r`:
-      Fork of the :mod:`!crypt` module, wrapper to the :manpage:`crypt_r(3)` library
-      call and associated functionality.
+       msg = EmailMessage()
+       msg['content-type'] = 'application/json; charset="utf8"'
+       main, params = msg.get_content_type(), msg['content-type'].params
 
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :func:`!cgi.parse_multipart` can be replaced with the functionality
+    in the :mod:`email` package, which implements the same MIME RFCs,
+    or with the :pypi:`multipart` library.
+    For example, the :class:`email.message.EmailMessage`
+    and :class:`email.message.Message` classes.
 
-  * :mod:`!imghdr`: use the projects :pypi:`filetype`,
-    :pypi:`puremagic`, or :pypi:`python-magic` instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-cgi`: and :pypi:`standard-cgitb`:
+    Use the redistribution of ``cgi`` and ``cgitb`` library from PyPI.
 
-  * :mod:`!mailcap`.
-    The :mod:`mimetypes` module provides an alternative.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!crypt` and the private :mod:`!_crypt` extension.
+  The :mod:`hashlib` module may be an appropriate replacement
+  when simply hashing a value is required.
+  Otherwise, various third-party libraries on PyPI are available:
 
-  * :mod:`!msilib`.
-    (Contributed by Zachary Ware in :gh:`104773`.)
+  * :pypi:`bcrypt`:
+    Modern password hashing for your software and your servers.
+  * :pypi:`passlib`:
+    Comprehensive password hashing framework supporting over 30 schemes.
+  * :pypi:`argon2-cffi`:
+    The secure Argon2 password hashing algorithm.
+  * :pypi:`legacycrypt`:
+    :mod:`ctypes` wrapper to the POSIX crypt library call
+    and associated functionality.
+  * :pypi:`crypt_r`:
+    Fork of the :mod:`!crypt` module,
+    wrapper to the :manpage:`crypt_r(3)` library call
+    and associated functionality.
+  * :pypi:`standard-crypt` and :pypi:`deprecated-crypt-alternative`:
+    Use the redistribution of ``crypt`` and reimplementation of ``_crypt`` libraries from PyPI.
 
-  * :mod:`!nis`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!imghdr`:
+  The :pypi:`filetype`, :pypi:`puremagic`, or :pypi:`python-magic` libraries
+  should be used as replacements.
+  For example, the :func:`!puremagic.what` function can be used
+  to replace the :func:`!imghdr.what` function for all file formats
+  that were supported by :mod:`!imghdr`.
 
-  * :mod:`!nntplib`:
-    the :pypi:`nntplib` PyPI project can be used instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-imghdr`:
+    Use the redistribution of ``imghdr`` library from PyPI.
 
-  * :mod:`!ossaudiodev`: use the
-    `pygame project <https://www.pygame.org/>`_ for audio playback.
-    (Contributed by Victor Stinner in :gh:`104780`.)
+* :mod:`!mailcap`:
+  Use the :mod:`mimetypes` module instead.
 
-  * :mod:`!pipes`: use the :mod:`subprocess` module instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-mailcap`:
+    Use the redistribution of ``mailcap`` library from PyPI.
 
-  * :mod:`!sndhdr`: use the projects :pypi:`filetype`,
-    :pypi:`puremagic`, or :pypi:`python-magic` instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!msilib`
+* :mod:`!nis`
+* :mod:`!nntplib`:
+  Use the :pypi:`pynntp` library from PyPI instead.
 
-  * :mod:`!spwd`:
-    the :pypi:`python-pam` project can be used instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-nntplib`:
+    Use the redistribution of ``nntplib`` library from PyPI.
 
-  * :mod:`!sunau`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!ossaudiodev`:
+  For audio playback, use the :pypi:`pygame` library from PyPI instead.
+* :mod:`!pipes`:
+  Use the :mod:`subprocess` module instead.
+  Use :func:`shlex.quote` to replace the undocumented ``pipes.quote``
+  function.
 
-  * :mod:`!telnetlib`, use the projects :pypi:`telnetlib3 ` or
-    :pypi:`Exscript` instead.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-pipes`:
+    Use the redistribution of ``pipes`` library from PyPI.
 
-  * :mod:`!uu`: the :mod:`base64` module is a modern alternative.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+* :mod:`!sndhdr`:
+  The :pypi:`filetype`, :pypi:`puremagic`, or :pypi:`python-magic` libraries
+  should be used as replacements.
 
-  * :mod:`!xdrlib`.
-    (Contributed by Victor Stinner in :gh:`104773`.)
+  * :pypi:`standard-sndhdr`:
+    Use the redistribution of ``sndhdr`` library from PyPI.
 
-* Remove the ``2to3`` program and the :mod:`!lib2to3` module,
-  deprecated in Python 3.11.
+* :mod:`!spwd`:
+  Use the :pypi:`python-pam` library from PyPI instead.
+* :mod:`!sunau`
+
+  * :pypi:`standard-sunau`:
+    Use the redistribution of ``sunau`` library from PyPI.
+
+* :mod:`!telnetlib`,
+  Use the :pypi:`telnetlib3` or :pypi:`Exscript` libraries from PyPI instead.
+
+  * :pypi:`standard-telnetlib`:
+    Use the redistribution of ``telnetlib`` library from PyPI.
+
+* :mod:`!uu`:
+  Use the :mod:`base64` module instead, as a modern alternative.
+
+  * :pypi:`standard-uu`:
+    Use the redistribution of ``uu`` library from PyPI.
+
+* :mod:`!xdrlib`
+
+  * :pypi:`standard-xdrlib`:
+    Use the redistribution of ``xdrlib`` library from PyPI.
+
+(Contributed by Victor Stinner and Zachary Ware in :gh:`104773` and :gh:`104780`.)
+
+
+2to3
+----
+
+* Remove the :program:`2to3` program and the :mod:`!lib2to3` module,
+  previously deprecated in Python 3.11.
   (Contributed by Victor Stinner in :gh:`104780`.)
 
-* Remove the :mod:`!tkinter.tix` module, deprecated in Python 3.6.  The
-  third-party Tix library which the module wrapped is unmaintained.
-  (Contributed by Zachary Ware in :gh:`75552`.)
+
+builtins
+--------
+
+* Remove support for chained :class:`classmethod` descriptors
+  (introduced in :gh:`63272`).
+  These can no longer be used to wrap other descriptors,
+  such as :class:`property`.
+  The core design of this feature was flawed and led to several problems.
+  To "pass-through" a :class:`classmethod`, consider using
+  the :attr:`!__wrapped__` attribute that was added in Python 3.10.
+  (Contributed by Raymond Hettinger in :gh:`89519`.)
+
+* Raise a :exc:`RuntimeError` when calling :meth:`frame.clear`
+  on a suspended frame (as has always been the case for an executing frame).
+  (Contributed by Irit Katriel in :gh:`79932`.)
+
 
 configparser
 ------------
 
-* Remove the undocumented :class:`!configparser.LegacyInterpolation` class,
+* Remove the undocumented :class:`!LegacyInterpolation` class,
   deprecated in the docstring since Python 3.2,
-  and with a deprecation warning since Python 3.11.
+  and at runtime since Python 3.11.
   (Contributed by Hugo van Kemenade in :gh:`104886`.)
 
-importlib
----------
 
-* Remove deprecated :meth:`~object.__getitem__` access for
-  :class:`!importlib.metadata.EntryPoint` objects.
+importlib.metadata
+------------------
+
+* Remove deprecated subscript (:meth:`~object.__getitem__`) access for
+  :ref:`EntryPoint <entry-points>` objects.
   (Contributed by Jason R. Coombs in :gh:`113175`.)
 
+
 locale
 ------
 
-* Remove ``locale.resetlocale()`` function deprecated in Python 3.11:
-  use ``locale.setlocale(locale.LC_ALL, "")`` instead.
+* Remove the :func:`!locale.resetlocale` function, deprecated in Python 3.11.
+  Use ``locale.setlocale(locale.LC_ALL, "")`` instead.
   (Contributed by Victor Stinner in :gh:`104783`.)
 
-logging
--------
 
-* :mod:`logging`: Remove undocumented and untested ``Logger.warn()`` and
-  ``LoggerAdapter.warn()`` methods and ``logging.warn()`` function. Deprecated
-  since Python 3.3, they were aliases to the :meth:`logging.Logger.warning`
-  method, :meth:`!logging.LoggerAdapter.warning` method and
-  :func:`logging.warning` function.
-  (Contributed by Victor Stinner in :gh:`105376`.)
+opcode
+------
+
+* Move :attr:`!opcode.ENABLE_SPECIALIZATION` to :attr:`!_opcode.ENABLE_SPECIALIZATION`.
+  This field was added in 3.12, it was never documented,
+  and is not intended for external use.
+  (Contributed by Irit Katriel in :gh:`105481`.)
+
+* Remove :func:`!opcode.is_pseudo`, :attr:`!opcode.MIN_PSEUDO_OPCODE`,
+  and :attr:`!opcode.MAX_PSEUDO_OPCODE`, which were added in Python 3.12,
+  but were neither documented nor exposed through :mod:`dis`,
+  and were not intended to be used externally.
+  (Contributed by Irit Katriel in :gh:`105481`.)
+
+
+optparse
+--------
+
+* This module is no longer considered :term:`soft deprecated`.
+  While :mod:`argparse` remains preferred for new projects that
+  aren't using a third party command line argument processing
+  library, there are aspects of the way ``argparse`` works that
+  mean the lower level ``optparse`` module may provide a better
+  foundation for *writing* argument processing libraries, and
+  for implementing command line applications which adhere more
+  strictly than ``argparse`` does to various Unix command line
+  processing conventions that originate in the behaviour of the
+  C :c:func:`!getopt` function .
+  (Contributed by Alyssa Coghlan and Serhiy Storchaka in :gh:`126180`.)
+
 
 pathlib
 -------
 
-* Remove support for using :class:`pathlib.Path` objects as context managers.
-  This functionality was deprecated and made a no-op in Python 3.9.
+* Remove the ability to use :class:`~pathlib.Path` objects as context managers.
+  This functionality was deprecated and has had no effect since Python 3.9.
+  (Contributed by Barney Gale in :gh:`83863`.)
+
 
 re
 --
 
-* Remove undocumented, never working, and deprecated ``re.template`` function
-  and ``re.TEMPLATE`` flag (and ``re.T`` alias).
+* Remove the undocumented, deprecated, and broken
+  :func:`!re.template` function and :attr:`!re.TEMPLATE` / :attr:`!re.T` flag.
   (Contributed by Serhiy Storchaka and Nikita Sobolev in :gh:`105687`.)
 
 
+tkinter.tix
+-----------
+
+* Remove the :mod:`!tkinter.tix` module, deprecated in Python 3.6.
+  The third-party Tix library which the module wrapped is unmaintained.
+  (Contributed by Zachary Ware in :gh:`75552`.)
+
+
 turtle
 ------
 
-* Remove the :meth:`!turtle.RawTurtle.settiltangle` method,
-  deprecated in docs since Python 3.1
-  and with a deprecation warning since Python 3.11.
+* Remove the :meth:`!RawTurtle.settiltangle` method,
+  deprecated in the documentation since Python 3.1
+  and at runtime since Python 3.11.
   (Contributed by Hugo van Kemenade in :gh:`104876`.)
 
+
 typing
 ------
 
-* Namespaces ``typing.io`` and ``typing.re``, deprecated in Python 3.8,
-  are now removed. The items in those namespaces can be imported directly
-  from :mod:`typing`. (Contributed by Sebastian Rittau in :gh:`92871`.)
+* Remove the :mod:`!typing.io` and :mod:`!typing.re` namespaces,
+  deprecated since Python 3.8.
+  The items in those namespaces can be imported directly
+  from the :mod:`typing` module.
+  (Contributed by Sebastian Rittau in :gh:`92871`.)
 
-* Remove support for the keyword-argument method of creating
-  :class:`typing.TypedDict` types, deprecated in Python 3.11.
+* Remove the keyword-argument method of creating
+  :class:`~typing.TypedDict` types, deprecated in Python 3.11.
   (Contributed by Tomas Roun in :gh:`104786`.)
 
+
 unittest
 --------
 
@@ -1345,759 +1783,815 @@ unittest
 
   Use :class:`~unittest.TestLoader` methods instead:
 
-  * :meth:`unittest.TestLoader.loadTestsFromModule`
-  * :meth:`unittest.TestLoader.loadTestsFromTestCase`
-  * :meth:`unittest.TestLoader.getTestCaseNames`
+  * :meth:`~unittest.TestLoader.loadTestsFromModule`
+  * :meth:`~unittest.TestLoader.loadTestsFromTestCase`
+  * :meth:`~unittest.TestLoader.getTestCaseNames`
 
   (Contributed by Hugo van Kemenade in :gh:`104835`.)
 
-* Remove the untested and undocumented :meth:`!unittest.TestProgram.usageExit`
+* Remove the untested and undocumented :meth:`!TestProgram.usageExit`
   method, deprecated in Python 3.11.
   (Contributed by Hugo van Kemenade in :gh:`104992`.)
 
+
 urllib
 ------
 
-* Remove *cafile*, *capath* and *cadefault* parameters of the
-  :func:`urllib.request.urlopen` function, deprecated in Python 3.6: pass
-  the *context* parameter instead. Use
-  :meth:`ssl.SSLContext.load_cert_chain` to load specific certificates, or
-  let :func:`ssl.create_default_context` select the system's trusted CA
-  certificates for you.
+* Remove the *cafile*, *capath*, and *cadefault* parameters of the
+  :func:`urllib.request.urlopen` function, deprecated in Python 3.6.
+  Use the *context* parameter instead with an :class:`~ssl.SSLContext` instance.
+  The :meth:`ssl.SSLContext.load_cert_chain` function
+  can be used to load specific certificates,
+  or let :func:`ssl.create_default_context` select
+  the operating system's trusted certificate authority (CA) certificates.
   (Contributed by Victor Stinner in :gh:`105382`.)
 
+
 webbrowser
 ----------
 
-* Remove the untested and undocumented :mod:`webbrowser` :class:`!MacOSX` class,
+* Remove the untested and undocumented :class:`!MacOSX` class,
   deprecated in Python 3.11.
   Use the :class:`!MacOSXOSAScript` class (introduced in Python 3.2) instead.
   (Contributed by Hugo van Kemenade in :gh:`104804`.)
 
-* Remove deprecated ``webbrowser.MacOSXOSAScript._name`` attribute.
-  Use :attr:`webbrowser.MacOSXOSAScript.name <webbrowser.controller.name>`
+* Remove the deprecated :attr:`!MacOSXOSAScript._name` attribute.
+  Use the :attr:`MacOSXOSAScript.name <webbrowser.controller.name>`
   attribute instead.
   (Contributed by Nikita Sobolev in :gh:`105546`.)
 
+
 New Deprecations
 ================
 
-* Removed chained :class:`classmethod` descriptors (introduced in
-  :gh:`63272`).  This can no longer be used to wrap other descriptors
-  such as :class:`property`.  The core design of this feature was flawed
-  and caused a number of downstream problems.  To "pass-through" a
-  :class:`classmethod`, consider using the :attr:`!__wrapped__`
-  attribute that was added in Python 3.10.  (Contributed by Raymond
-  Hettinger in :gh:`89519`.)
-
-* :mod:`array`: :mod:`array`'s ``'u'`` format code, deprecated in docs since Python 3.3,
-  emits :exc:`DeprecationWarning` since 3.13
-  and will be removed in Python 3.16.
-  Use the ``'w'`` format code instead.
-  (Contributed by Hugo van Kemenade in :gh:`80480`.)
-
-* :mod:`ctypes`: Deprecate undocumented :func:`!ctypes.SetPointerType`
-  and :func:`!ctypes.ARRAY` functions.
-  Replace ``ctypes.ARRAY(item_type, size)`` with ``item_type * size``.
-  (Contributed by Victor Stinner in :gh:`105733`.)
-
-* :mod:`decimal`: Deprecate non-standard format specifier "N" for
-  :class:`decimal.Decimal`.
-  It was not documented and only supported in the C implementation.
-  (Contributed by Serhiy Storchaka in :gh:`89902`.)
-
-* :mod:`dis`: The ``dis.HAVE_ARGUMENT`` separator is deprecated. Check
-  membership in :data:`~dis.hasarg` instead.
-  (Contributed by Irit Katriel in :gh:`109319`.)
-
-* :ref:`frame-objects`:
-  Calling :meth:`frame.clear` on a suspended frame raises :exc:`RuntimeError`
-  (as has always been the case for an executing frame).
-  (Contributed by Irit Katriel in :gh:`79932`.)
+* :ref:`User-defined functions <user-defined-funcs>`:
 
-* :mod:`getopt` and :mod:`optparse` modules: They are now
-  :term:`soft deprecated`: the :mod:`argparse` module should be used for new projects.
-  Previously, the :mod:`optparse` module was already deprecated, its removal
-  was not scheduled, and no warnings was emitted: so there is no change in
-  practice.
-  (Contributed by Victor Stinner in :gh:`106535`.)
-
-* :mod:`gettext`: Emit deprecation warning for non-integer numbers in
-  :mod:`gettext` functions and methods that consider plural forms even if the
-  translation was not found.
-  (Contributed by Serhiy Storchaka in :gh:`88434`.)
-
-* :mod:`glob`: The undocumented :func:`!glob.glob0` and :func:`!glob.glob1`
-  functions are deprecated. Use :func:`glob.glob` and pass a directory to its
-  *root_dir* argument instead.
-  (Contributed by Barney Gale in :gh:`117337`.)
-
-* :mod:`http.server`: :class:`http.server.CGIHTTPRequestHandler` now emits a
-  :exc:`DeprecationWarning` as it will be removed in 3.15.  Process-based CGI
-  HTTP servers have been out of favor for a very long time.  This code was
-  outdated, unmaintained, and rarely used.  It has a high potential for both
-  security and functionality bugs.  This includes removal of the ``--cgi``
-  flag to the ``python -m http.server`` command line in 3.15.
-
-* :mod:`mimetypes`: Passing file path instead of URL in :func:`~mimetypes.guess_type` is
-  :term:`soft deprecated`. Use :func:`~mimetypes.guess_file_type` instead.
-  (Contributed by Serhiy Storchaka in :gh:`66543`.)
+  * Deprecate assignment to a function's :attr:`~function.__code__` attribute,
+    where the new code object's type does not match the function's type.
+    The different types are:
+    plain function, generator, async generator, and coroutine.
+    (Contributed by Irit Katriel in :gh:`81137`.)
 
-* :mod:`re`: Passing optional arguments *maxsplit*, *count* and *flags* in module-level
-  functions :func:`re.split`, :func:`re.sub` and :func:`re.subn` as positional
-  arguments is now deprecated. In future Python versions these parameters will be
-  :ref:`keyword-only <keyword-only_parameter>`.
-  (Contributed by Serhiy Storchaka in :gh:`56166`.)
+* :mod:`array`:
 
-* :mod:`pathlib`:
-  :meth:`pathlib.PurePath.is_reserved` is deprecated and scheduled for
-  removal in Python 3.15. Use :func:`os.path.isreserved` to detect reserved
-  paths on Windows.
+  * Deprecate the ``'u'`` format code (:c:type:`wchar_t`) at runtime.
+    This format code has been deprecated in documentation since Python 3.3,
+    and will be removed in Python 3.16.
+    Use the ``'w'`` format code (:c:type:`Py_UCS4`)
+    for Unicode characters instead.
+    (Contributed by Hugo van Kemenade in :gh:`80480`.)
 
-* :mod:`platform`:
-  :func:`~platform.java_ver` is deprecated and will be removed in 3.15.
-  It was largely untested, had a confusing API,
-  and was only useful for Jython support.
-  (Contributed by Nikita Sobolev in :gh:`116349`.)
+* :mod:`ctypes`:
+
+  * Deprecate the undocumented :func:`!SetPointerType` function,
+    to be removed in Python 3.15.
+    (Contributed by Victor Stinner in :gh:`105733`.)
+
+  * :term:`Soft-deprecate <soft deprecated>` the :func:`~ctypes.ARRAY`
+    function in favour of ``type * length`` multiplication.
+    (Contributed by Victor Stinner in :gh:`105733`.)
+
+* :mod:`decimal`:
+
+  * Deprecate the non-standard and undocumented :class:`~decimal.Decimal`
+    format specifier ``'N'``,
+    which is only supported in the :mod:`!decimal` module's C implementation.
+    (Contributed by Serhiy Storchaka in :gh:`89902`.)
 
-* :mod:`pydoc`: Deprecate undocumented :func:`!pydoc.ispackage` function.
-  (Contributed by Zackery Spytz in :gh:`64020`.)
+* :mod:`dis`:
 
-* :mod:`sqlite3`: Passing more than one positional argument to
-  :func:`sqlite3.connect` and the :class:`sqlite3.Connection` constructor is
-  deprecated. The remaining parameters will become keyword-only in Python 3.15.
+  * Deprecate the :attr:`!HAVE_ARGUMENT` separator.
+    Check membership in :data:`~dis.hasarg` instead.
+    (Contributed by Irit Katriel in :gh:`109319`.)
 
-  Deprecate passing name, number of arguments, and the callable as keyword
-  arguments for the following :class:`sqlite3.Connection` APIs:
+* :mod:`gettext`:
 
-  * :meth:`~sqlite3.Connection.create_function`
-  * :meth:`~sqlite3.Connection.create_aggregate`
+  * Deprecate non-integer numbers as arguments to functions and methods
+    that consider plural forms in the :mod:`!gettext` module,
+    even if no translation was found.
+    (Contributed by Serhiy Storchaka in :gh:`88434`.)
 
-  Deprecate passing the callback callable by keyword for the following
-  :class:`sqlite3.Connection` APIs:
+* :mod:`glob`:
 
-  * :meth:`~sqlite3.Connection.set_authorizer`
-  * :meth:`~sqlite3.Connection.set_progress_handler`
-  * :meth:`~sqlite3.Connection.set_trace_callback`
+  * Deprecate the undocumented :func:`!glob0` and :func:`!glob1` functions.
+    Use :func:`~glob.glob` and pass a :term:`path-like object` specifying
+    the root directory to the *root_dir* parameter instead.
+    (Contributed by Barney Gale in :gh:`117337`.)
 
-  The affected parameters will become positional-only in Python 3.15.
+* :mod:`http.server`:
 
-  (Contributed by Erlend E. Aasland in :gh:`107948` and :gh:`108278`.)
+  * Deprecate :class:`~http.server.CGIHTTPRequestHandler`,
+    to be removed in Python 3.15.
+    Process-based CGI HTTP servers have been out of favor for a very long time.
+    This code was outdated, unmaintained, and rarely used.
+    It has a high potential for both security and functionality bugs.
+    (Contributed by Gregory P. Smith in :gh:`109096`.)
 
-* :mod:`sys`: :func:`sys._enablelegacywindowsfsencoding` function.
-  Replace it with the :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment variable.
-  (Contributed by Inada Naoki in :gh:`73427`.)
+  * Deprecate the :option:`!--cgi` flag to
+    the :program:`python -m http.server` command-line interface,
+    to be removed in Python 3.15.
+    (Contributed by Gregory P. Smith in :gh:`109096`.)
+
+* :mod:`mimetypes`:
+
+  * :term:`Soft-deprecate <soft deprecated>` file path arguments
+    to :func:`~mimetypes.guess_type`,
+    use :func:`~mimetypes.guess_file_type` instead.
+    (Contributed by Serhiy Storchaka in :gh:`66543`.)
+
+* :mod:`re`:
+
+  * Deprecate passing the optional *maxsplit*, *count*, or *flags* arguments
+    as positional arguments to the module-level
+    :func:`~re.split`, :func:`~re.sub`, and :func:`~re.subn` functions.
+    These parameters will become :ref:`keyword-only <keyword-only_parameter>`
+    in a future version of Python.
+    (Contributed by Serhiy Storchaka in :gh:`56166`.)
+
+* :mod:`pathlib`:
+
+  * Deprecate :meth:`.PurePath.is_reserved`,
+    to be removed in Python 3.15.
+    Use :func:`os.path.isreserved` to detect reserved paths on Windows.
+    (Contributed by Barney Gale in :gh:`88569`.)
+
+* :mod:`platform`:
+
+  * Deprecate :func:`~platform.java_ver`,
+    to be removed in Python 3.15.
+    This function is only useful for Jython support, has a confusing API,
+    and is largely untested.
+    (Contributed by Nikita Sobolev in :gh:`116349`.)
+
+* :mod:`pydoc`:
+
+  * Deprecate the undocumented :func:`!ispackage` function.
+    (Contributed by Zackery Spytz in :gh:`64020`.)
+
+* :mod:`sqlite3`:
+
+  * Deprecate passing more than one positional argument to
+    the :func:`~sqlite3.connect` function
+    and the :class:`~sqlite3.Connection` constructor.
+    The remaining parameters will become keyword-only in Python 3.15.
+    (Contributed by Erlend E. Aasland in :gh:`107948`.)
+
+  * Deprecate passing name, number of arguments, and the callable as keyword
+    arguments for :meth:`.Connection.create_function`
+    and :meth:`.Connection.create_aggregate`
+    These parameters will become positional-only in Python 3.15.
+    (Contributed by Erlend E. Aasland in :gh:`108278`.)
+
+  * Deprecate passing the callback callable by keyword for the
+    :meth:`~sqlite3.Connection.set_authorizer`,
+    :meth:`~sqlite3.Connection.set_progress_handler`, and
+    :meth:`~sqlite3.Connection.set_trace_callback`
+    :class:`~sqlite3.Connection` methods.
+    The callback callables will become positional-only in Python 3.15.
+    (Contributed by Erlend E. Aasland in :gh:`108278`.)
+
+* :mod:`sys`:
+
+  * Deprecate the :func:`~sys._enablelegacywindowsfsencoding` function,
+    to be removed in Python 3.16.
+    Use the :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment variable instead.
+    (Contributed by Inada Naoki in :gh:`73427`.)
 
 * :mod:`tarfile`:
-  The undocumented and unused ``tarfile`` attribute of :class:`tarfile.TarFile`
-  is deprecated and scheduled for removal in Python 3.16.
 
-* :mod:`traceback`: The field *exc_type* of :class:`traceback.TracebackException`
-  is deprecated. Use *exc_type_str* instead.
+  * Deprecate the undocumented and unused :attr:`!TarFile.tarfile` attribute,
+    to be removed in Python 3.16.
+    (Contributed in :gh:`115256`.)
+
+* :mod:`traceback`:
+
+  * Deprecate the :attr:`.TracebackException.exc_type` attribute.
+    Use :attr:`.TracebackException.exc_type_str` instead.
+    (Contributed by Irit Katriel in :gh:`112332`.)
 
 * :mod:`typing`:
 
-  * Creating a :class:`typing.NamedTuple` class using keyword arguments to denote
-    the fields (``NT = NamedTuple("NT", x=int, y=int)``) is deprecated, and will
-    be disallowed in Python 3.15. Use the class-based syntax or the functional
-    syntax instead. (Contributed by Alex Waygood in :gh:`105566`.)
-
-  * When using the functional syntax to create a :class:`typing.NamedTuple`
-    class or a :class:`typing.TypedDict` class, failing to pass a value to the
-    'fields' parameter (``NT = NamedTuple("NT")`` or ``TD = TypedDict("TD")``) is
-    deprecated. Passing ``None`` to the 'fields' parameter
-    (``NT = NamedTuple("NT", None)`` or ``TD = TypedDict("TD", None)``) is also
-    deprecated. Both will be disallowed in Python 3.15. To create a NamedTuple
-    class with 0 fields, use ``class NT(NamedTuple): pass`` or
-    ``NT = NamedTuple("NT", [])``. To create a TypedDict class with 0 fields, use
-    ``class TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
+  * Deprecate the undocumented keyword argument syntax for creating
+    :class:`~typing.NamedTuple` classes
+    (e.g. ``Point = NamedTuple("Point", x=int, y=int)``),
+    to be removed in Python 3.15.
+    Use the class-based syntax or the functional syntax instead.
+    (Contributed by Alex Waygood in :gh:`105566`.)
+
+  * Deprecate omitting the *fields* parameter when creating
+    a :class:`~typing.NamedTuple` or :class:`typing.TypedDict` class,
+    and deprecate passing ``None`` to the *fields* parameter of both types.
+    Python 3.15 will require a valid sequence for the *fields* parameter.
+    To create a NamedTuple class with zero fields,
+    use ``class NT(NamedTuple): pass`` or ``NT = NamedTuple("NT", ())``.
+    To create a TypedDict class with zero fields,
+    use ``class TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
     (Contributed by Alex Waygood in :gh:`105566` and :gh:`105570`.)
 
-  * :func:`typing.no_type_check_decorator` is deprecated, and scheduled for
-    removal in Python 3.15. After eight years in the :mod:`typing` module, it
-    has yet to be supported by any major type checkers.
+  * Deprecate the :func:`typing.no_type_check_decorator` decorator function,
+    to be removed in in Python 3.15.
+    After eight years in the :mod:`typing` module,
+    it has yet to be supported by any major type checker.
     (Contributed by Alex Waygood in :gh:`106309`.)
 
-  * :data:`typing.AnyStr` is deprecated. In Python 3.16, it will be removed from
-    ``typing.__all__``, and a :exc:`DeprecationWarning` will be emitted when it
-    is imported or accessed. It will be removed entirely in Python 3.18. Use
-    the new :ref:`type parameter syntax <type-params>` instead.
+  * Deprecate :data:`typing.AnyStr`.
+    In Python 3.16, it will be removed from ``typing.__all__``,
+    and a :exc:`DeprecationWarning` will be emitted at runtime
+    when it is imported or accessed.
+    It will be removed entirely in Python 3.18.
+    Use the new :ref:`type parameter syntax <type-params>` instead.
     (Contributed by Michael The in :gh:`107116`.)
 
-* :ref:`user-defined-funcs`:
-  Assignment to a function's :attr:`~function.__code__` attribute where the new code
-  object's type does not match the function's type, is deprecated. The
-  different types are: plain function, generator, async generator and
-  coroutine.
-  (Contributed by Irit Katriel in :gh:`81137`.)
+* :mod:`wave`:
 
-* :mod:`wave`: Deprecate the ``getmark()``, ``setmark()`` and ``getmarkers()``
-  methods of the :class:`wave.Wave_read` and :class:`wave.Wave_write` classes.
-  They will be removed in Python 3.15.
-  (Contributed by Victor Stinner in :gh:`105096`.)
+  * Deprecate the :meth:`~wave.Wave_read.getmark`, :meth:`!setmark`,
+    and :meth:`~wave.Wave_read.getmarkers` methods of
+    the :class:`~wave.Wave_read` and :class:`~wave.Wave_write` classes,
+    to be removed in Python 3.15.
+    (Contributed by Victor Stinner in :gh:`105096`.)
 
 .. Add deprecations above alphabetically, not here at the end.
 
-Pending Removal in Python 3.14
-------------------------------
+.. include:: ../deprecations/pending-removal-in-3.14.rst
 
-* :mod:`argparse`: The *type*, *choices*, and *metavar* parameters
-  of :class:`!argparse.BooleanOptionalAction` are deprecated
-  and will be removed in 3.14.
-  (Contributed by Nikita Sobolev in :gh:`92248`.)
+.. include:: ../deprecations/pending-removal-in-3.15.rst
 
-* :mod:`ast`: The following features have been deprecated in documentation
-  since Python 3.8, now cause a :exc:`DeprecationWarning` to be emitted at
-  runtime when they are accessed or used, and will be removed in Python 3.14:
+.. include:: ../deprecations/pending-removal-in-3.16.rst
 
-  * :class:`!ast.Num`
-  * :class:`!ast.Str`
-  * :class:`!ast.Bytes`
-  * :class:`!ast.NameConstant`
-  * :class:`!ast.Ellipsis`
+.. include:: ../deprecations/pending-removal-in-future.rst
 
-  Use :class:`ast.Constant` instead.
-  (Contributed by Serhiy Storchaka in :gh:`90953`.)
+CPython Bytecode Changes
+========================
 
-* :mod:`collections.abc`: Deprecated :class:`~collections.abc.ByteString`.
-  Prefer :class:`!Sequence` or :class:`~collections.abc.Buffer`.
-  For use in typing, prefer a union, like ``bytes | bytearray``,
-  or :class:`collections.abc.Buffer`.
-  (Contributed by Shantanu Jain in :gh:`91896`.)
+* The oparg of :opcode:`YIELD_VALUE` is now
+  ``1`` if the yield is part of a yield-from or await, and ``0`` otherwise.
+  The oparg of :opcode:`RESUME` was changed to add a bit indicating
+  if the except-depth is 1, which is needed to optimize closing of generators.
+  (Contributed by Irit Katriel in :gh:`111354`.)
 
-* :mod:`email`: Deprecated the *isdst* parameter in :func:`email.utils.localtime`.
-  (Contributed by Alan Williams in :gh:`72346`.)
 
-* :mod:`importlib`: ``__package__`` and ``__cached__`` will cease to be set or
-  taken into consideration by the import system (:gh:`97879`).
+C API Changes
+=============
 
-* :mod:`importlib.abc` deprecated classes:
+New Features
+------------
 
-  * :class:`!importlib.abc.ResourceReader`
-  * :class:`!importlib.abc.Traversable`
-  * :class:`!importlib.abc.TraversableResources`
+* Add the :ref:`PyMonitoring C API <c-api-monitoring>`
+  for generating :pep:`669` monitoring events:
+
+  * :c:type:`PyMonitoringState`
+  * :c:func:`PyMonitoring_FirePyStartEvent`
+  * :c:func:`PyMonitoring_FirePyResumeEvent`
+  * :c:func:`PyMonitoring_FirePyReturnEvent`
+  * :c:func:`PyMonitoring_FirePyYieldEvent`
+  * :c:func:`PyMonitoring_FireCallEvent`
+  * :c:func:`PyMonitoring_FireLineEvent`
+  * :c:func:`PyMonitoring_FireJumpEvent`
+  * :c:func:`PyMonitoring_FireBranchEvent`
+  * :c:func:`PyMonitoring_FireCReturnEvent`
+  * :c:func:`PyMonitoring_FirePyThrowEvent`
+  * :c:func:`PyMonitoring_FireRaiseEvent`
+  * :c:func:`PyMonitoring_FireCRaiseEvent`
+  * :c:func:`PyMonitoring_FireReraiseEvent`
+  * :c:func:`PyMonitoring_FireExceptionHandledEvent`
+  * :c:func:`PyMonitoring_FirePyUnwindEvent`
+  * :c:func:`PyMonitoring_FireStopIterationEvent`
+  * :c:func:`PyMonitoring_EnterScope`
+  * :c:func:`PyMonitoring_ExitScope`
+
+  (Contributed by Irit Katriel in :gh:`111997`).
+
+* Add :c:type:`PyMutex`, a lightweight mutex that occupies a single byte,
+  and the new :c:func:`PyMutex_Lock` and :c:func:`PyMutex_Unlock` functions.
+  :c:func:`!PyMutex_Lock` will release the :term:`GIL` (if currently held)
+  if the operation needs to block.
+  (Contributed by Sam Gross in :gh:`108724`.)
+
+* Add the :ref:`PyTime C API <c-api-time>` to provide access to system clocks:
+
+  * :c:type:`PyTime_t`.
+  * :c:var:`PyTime_MIN` and :c:var:`PyTime_MAX`.
+  * :c:func:`PyTime_AsSecondsDouble`.
+  * :c:func:`PyTime_Monotonic`.
+  * :c:func:`PyTime_MonotonicRaw`.
+  * :c:func:`PyTime_PerfCounter`.
+  * :c:func:`PyTime_PerfCounterRaw`.
+  * :c:func:`PyTime_Time`.
+  * :c:func:`PyTime_TimeRaw`.
 
-  Use :mod:`importlib.resources.abc` classes instead:
+  (Contributed by Victor Stinner and Petr Viktorin in :gh:`110850`.)
 
-  * :class:`importlib.resources.abc.Traversable`
-  * :class:`importlib.resources.abc.TraversableResources`
+* Add the :c:func:`PyDict_ContainsString` function
+  with the same behavior as :c:func:`PyDict_Contains`,
+  but *key* is specified as a :c:expr:`const char*` UTF-8 encoded bytes string,
+  rather than a :c:expr:`PyObject*`.
+  (Contributed by Victor Stinner in :gh:`108314`.)
 
-  (Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
+* Add the :c:func:`PyDict_GetItemRef` and :c:func:`PyDict_GetItemStringRef`
+  functions,
+  which behave similarly to :c:func:`PyDict_GetItemWithError`,
+  but return a  :term:`strong reference` instead of a :term:`borrowed reference`.
+  Moreover, these functions return ``-1`` on error,
+  removing the need to check :c:func:`!PyErr_Occurred`.
+  (Contributed by Victor Stinner in :gh:`106004`.)
 
-* :mod:`itertools` had undocumented, inefficient, historically buggy,
-  and inconsistent support for copy, deepcopy, and pickle operations.
-  This will be removed in 3.14 for a significant reduction in code
-  volume and maintenance burden.
-  (Contributed by Raymond Hettinger in :gh:`101588`.)
+* Add the :c:func:`PyDict_SetDefaultRef` function,
+  which behaves similarly to :c:func:`PyDict_SetDefault`,
+  but returns a :term:`strong reference` instead of a :term:`borrowed reference`.
+  This function returns ``-1`` on error,
+  ``0`` on insertion,
+  and ``1`` if the key was already present in the dictionary.
+  (Contributed by Sam Gross in :gh:`112066`.)
 
-* :mod:`multiprocessing`: The default start method will change to a safer one on
-  Linux, BSDs, and other non-macOS POSIX platforms where ``'fork'`` is currently
-  the default (:gh:`84559`). Adding a runtime warning about this was deemed too
-  disruptive as the majority of code is not expected to care. Use the
-  :func:`~multiprocessing.get_context` or
-  :func:`~multiprocessing.set_start_method` APIs to explicitly specify when
-  your code *requires* ``'fork'``.  See :ref:`multiprocessing-start-methods`.
+* Add the :c:func:`PyDict_Pop` and :c:func:`PyDict_PopString` functions
+  to remove a key from a dictionary and optionally return the removed value.
+  This is similar to :meth:`dict.pop`,
+  though there is no default value,
+  and :exc:`KeyError` is not raised for missing keys.
+  (Contributed by Stefan Behnel and Victor Stinner in :gh:`111262`.)
 
-* :mod:`pathlib`: :meth:`~pathlib.PurePath.is_relative_to` and
-  :meth:`~pathlib.PurePath.relative_to`: passing additional arguments is
-  deprecated.
+* Add the :c:func:`PyMapping_GetOptionalItem`
+  and :c:func:`PyMapping_GetOptionalItemString` functions
+  as alternatives to :c:func:`PyObject_GetItem`
+  and :c:func:`PyMapping_GetItemString` respectively.
+  The new functions do not raise :exc:`KeyError`
+  if the requested key is missing from the mapping.
+  These variants are more convenient and faster
+  if a missing key should not be treated as a failure.
+  (Contributed by Serhiy Storchaka in :gh:`106307`.)
 
-* :mod:`pkgutil`: :func:`~pkgutil.find_loader` and :func:`~pkgutil.get_loader`
-  now raise :exc:`DeprecationWarning`;
-  use :func:`importlib.util.find_spec` instead.
-  (Contributed by Nikita Sobolev in :gh:`97850`.)
+* Add the :c:func:`PyObject_GetOptionalAttr`
+  and :c:func:`PyObject_GetOptionalAttrString` functions
+  as alternatives to  :c:func:`PyObject_GetAttr`
+  and :c:func:`PyObject_GetAttrString` respectively.
+  The new functions do not raise :exc:`AttributeError`
+  if the requested attribute is not found on the object.
+  These variants are more convenient and faster
+  if the missing attribute should not be treated as a failure.
+  (Contributed by Serhiy Storchaka in :gh:`106521`.)
 
-* :mod:`pty`:
+* Add the :c:func:`PyErr_FormatUnraisable` function
+  as an extension to :c:func:`PyErr_WriteUnraisable`
+  that allows customizing the warning message.
+  (Contributed by Serhiy Storchaka in :gh:`108082`.)
 
-  * ``master_open()``: use :func:`pty.openpty`.
-  * ``slave_open()``: use :func:`pty.openpty`.
+* Add new functions that return a :term:`strong reference` instead of
+  a :term:`borrowed reference` for frame locals, globals, and builtins,
+  as part of :ref:`PEP 667 <whatsnew313-locals-semantics>`:
 
-* :func:`shutil.rmtree` *onerror* parameter is deprecated in 3.12,
-  and will be removed in 3.14: use the *onexc* parameter instead.
+  * :c:func:`PyEval_GetFrameBuiltins` replaces :c:func:`PyEval_GetBuiltins`
+  * :c:func:`PyEval_GetFrameGlobals` replaces :c:func:`PyEval_GetGlobals`
+  * :c:func:`PyEval_GetFrameLocals` replaces :c:func:`PyEval_GetLocals`
 
-* :mod:`sqlite3`:
+  (Contributed by Mark Shannon and Tian Gao in :gh:`74929`.)
 
-  * :data:`~sqlite3.version` and :data:`~sqlite3.version_info`.
+* Add the :c:func:`Py_GetConstant` and :c:func:`Py_GetConstantBorrowed`
+  functions to get :term:`strong <strong reference>`
+  or :term:`borrowed <borrowed reference>` references to constants.
+  For example, ``Py_GetConstant(Py_CONSTANT_ZERO)`` returns a strong reference
+  to the constant zero.
+  (Contributed by Victor  Stinner in :gh:`115754`.)
 
-  * :meth:`~sqlite3.Cursor.execute` and :meth:`~sqlite3.Cursor.executemany`
-    if :ref:`named placeholders <sqlite3-placeholders>` are used and
-    *parameters* is a sequence instead of a :class:`dict`.
+* Add the :c:func:`PyImport_AddModuleRef` function
+  as a replacement for :c:func:`PyImport_AddModule`
+  that returns a :term:`strong reference` instead of a :term:`borrowed reference`.
+  (Contributed by Victor Stinner in :gh:`105922`.)
 
-  * date and datetime adapter, date and timestamp converter:
-    see the :mod:`sqlite3` documentation for suggested replacement recipes.
+* Add the :c:func:`Py_IsFinalizing` function to check
+  whether the main Python interpreter is
+  :term:`shutting down <interpreter shutdown>`.
+  (Contributed by Victor Stinner in :gh:`108014`.)
 
-* :class:`types.CodeType`: Accessing :attr:`~codeobject.co_lnotab` was
-  deprecated in :pep:`626`
-  since 3.10 and was planned to be removed in 3.12,
-  but it only got a proper :exc:`DeprecationWarning` in 3.12.
-  May be removed in 3.14.
-  (Contributed by Nikita Sobolev in :gh:`101866`.)
+* Add the :c:func:`PyList_GetItemRef` function
+  as a replacement for :c:func:`PyList_GetItem`
+  that returns a :term:`strong reference` instead of a :term:`borrowed reference`.
+  (Contributed by Sam Gross in :gh:`114329`.)
 
-* :mod:`typing`: :class:`~typing.ByteString`, deprecated since Python 3.9,
-  now causes a :exc:`DeprecationWarning` to be emitted when it is used.
+* Add the :c:func:`PyList_Extend` and :c:func:`PyList_Clear` functions,
+  mirroring the Python :meth:`!list.extend` and :meth:`!list.clear` methods.
+  (Contributed by Victor Stinner in :gh:`111138`.)
 
-* :mod:`urllib`:
-  :class:`!urllib.parse.Quoter` is deprecated: it was not intended to be a
-  public API.
-  (Contributed by Gregory P. Smith in :gh:`88168`.)
+* Add the :c:func:`PyLong_AsInt` function.
+  It behaves similarly to :c:func:`PyLong_AsLong`,
+  but stores the result in a C :c:expr:`int` instead of a C :c:expr:`long`.
+  (Contributed by Victor Stinner in :gh:`108014`.)
 
-* :mod:`xml.etree.ElementTree`: Testing the truth value of an
-  :class:`~xml.etree.ElementTree.Element` is deprecated and will raise an
-  exception in Python 3.14.
+* Add the :c:func:`PyLong_AsNativeBytes`, :c:func:`PyLong_FromNativeBytes`,
+  and :c:func:`PyLong_FromUnsignedNativeBytes` functions
+  to simplify converting between native integer types
+  and Python :class:`int` objects.
+  (Contributed by Steve Dower in :gh:`111140`.)
 
+* Add :c:func:`PyModule_Add` function, which is similar to
+  :c:func:`PyModule_AddObjectRef` and :c:func:`PyModule_AddObject`,
+  but always steals a reference to the value.
+  (Contributed by Serhiy Storchaka in :gh:`86493`.)
 
-Pending Removal in Python 3.15
-------------------------------
+* Add the :c:func:`PyObject_GenericHash` function
+  that implements the default hashing function of a Python object.
+  (Contributed by Serhiy Storchaka in :gh:`113024`.)
 
-* :class:`http.server.CGIHTTPRequestHandler` will be removed along with its
-  related ``--cgi`` flag to ``python -m http.server``.  It was obsolete and
-  rarely used.  No direct replacement exists.  *Anything* is better than CGI
-  to interface a web server with a request handler.
+* Add the :c:func:`Py_HashPointer` function to hash a raw pointer.
+  (Contributed by Victor Stinner in :gh:`111545`.)
 
-* :class:`locale`: :func:`locale.getdefaultlocale` was deprecated in Python 3.11
-  and originally planned for removal in Python 3.13 (:gh:`90817`),
-  but removal has been postponed to Python 3.15.
-  Use :func:`locale.setlocale()`, :func:`locale.getencoding()` and
-  :func:`locale.getlocale()` instead.
-  (Contributed by Hugo van Kemenade in :gh:`111187`.)
+* Add the :c:func:`PyObject_VisitManagedDict` and
+  :c:func:`PyObject_ClearManagedDict` functions.
+  which must be called by the traverse and clear functions of a type using
+  the :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag.
+  The `pythoncapi-compat project`_ can be used to
+  use these functions with Python 3.11 and 3.12.
+  (Contributed by Victor Stinner in :gh:`107073`.)
 
-* :mod:`pathlib`:
-  :meth:`pathlib.PurePath.is_reserved` is deprecated and scheduled for
-  removal in Python 3.15. Use :func:`os.path.isreserved` to detect reserved
-  paths on Windows.
+* Add the :c:func:`PyRefTracer_SetTracer`
+  and :c:func:`PyRefTracer_GetTracer` functions,
+  which enable tracking object creation and destruction
+  in the same way that the :mod:`tracemalloc` module does.
+  (Contributed by Pablo Galindo in :gh:`93502`.)
 
-* :mod:`platform`:
-  :func:`~platform.java_ver` is deprecated and will be removed in 3.15.
-  It was largely untested, had a confusing API,
-  and was only useful for Jython support.
-  (Contributed by Nikita Sobolev in :gh:`116349`.)
-
-* :mod:`threading`:
-  Passing any arguments to :func:`threading.RLock` is now deprecated.
-  C version allows any numbers of args and kwargs,
-  but they are just ignored. Python version does not allow any arguments.
-  All arguments will be removed from :func:`threading.RLock` in Python 3.15.
-  (Contributed by Nikita Sobolev in :gh:`102029`.)
-
-* :class:`typing.NamedTuple`:
-
-  * The undocumented keyword argument syntax for creating :class:`!NamedTuple` classes
-    (``NT = NamedTuple("NT", x=int)``) is deprecated, and will be disallowed in
-    3.15. Use the class-based syntax or the functional syntax instead.
-
-  * When using the functional syntax to create a :class:`!NamedTuple` class, failing to
-    pass a value to the *fields* parameter (``NT = NamedTuple("NT")``) is
-    deprecated. Passing ``None`` to the *fields* parameter
-    (``NT = NamedTuple("NT", None)``) is also deprecated. Both will be
-    disallowed in Python 3.15. To create a :class:`!NamedTuple` class with 0 fields, use
-    ``class NT(NamedTuple): pass`` or ``NT = NamedTuple("NT", [])``.
-
-* :class:`typing.TypedDict`: When using the functional syntax to create a
-  :class:`!TypedDict` class, failing to pass a value to the *fields* parameter (``TD =
-  TypedDict("TD")``) is deprecated. Passing ``None`` to the *fields* parameter
-  (``TD = TypedDict("TD", None)``) is also deprecated. Both will be disallowed
-  in Python 3.15. To create a :class:`!TypedDict` class with 0 fields, use ``class
-  TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
-
-* :mod:`wave`: Deprecate the ``getmark()``, ``setmark()`` and ``getmarkers()``
-  methods of the :class:`wave.Wave_read` and :class:`wave.Wave_write` classes.
-  They will be removed in Python 3.15.
-  (Contributed by Victor Stinner in :gh:`105096`.)
-
-Pending Removal in Python 3.16
-------------------------------
-
-* :class:`array.array` ``'u'`` type (:c:type:`wchar_t`):
-  use the ``'w'`` type instead (``Py_UCS4``).
-
-Pending Removal in Future Versions
-----------------------------------
-
-The following APIs were deprecated in earlier Python versions and will be removed,
-although there is currently no date scheduled for their removal.
-
-* :mod:`argparse`: Nesting argument groups and nesting mutually exclusive
-  groups are deprecated.
-
-* :mod:`builtins`:
-
-  * ``~bool``, bitwise inversion on bool.
-  * ``bool(NotImplemented)``.
-  * Generators: ``throw(type, exc, tb)`` and ``athrow(type, exc, tb)``
-    signature is deprecated: use ``throw(exc)`` and ``athrow(exc)`` instead,
-    the single argument signature.
-  * Currently Python accepts numeric literals immediately followed by keywords,
-    for example ``0in x``, ``1or x``, ``0if 1else 2``.  It allows confusing and
-    ambiguous expressions like ``[0x1for x in y]`` (which can be interpreted as
-    ``[0x1 for x in y]`` or ``[0x1f or x in y]``).  A syntax warning is raised
-    if the numeric literal is immediately followed by one of keywords
-    :keyword:`and`, :keyword:`else`, :keyword:`for`, :keyword:`if`,
-    :keyword:`in`, :keyword:`is` and :keyword:`or`.  In a future release it
-    will be changed to a syntax error. (:gh:`87999`)
-  * Support for ``__index__()`` and ``__int__()`` method returning non-int type:
-    these methods will be required to return an instance of a strict subclass of
-    :class:`int`.
-  * Support for ``__float__()`` method returning a strict subclass of
-    :class:`float`: these methods will be required to return an instance of
-    :class:`float`.
-  * Support for ``__complex__()`` method returning a strict subclass of
-    :class:`complex`: these methods will be required to return an instance of
-    :class:`complex`.
-  * Delegation of ``int()`` to ``__trunc__()`` method.
-
-* :mod:`calendar`: ``calendar.January`` and ``calendar.February`` constants are
-  deprecated and replaced by :data:`calendar.JANUARY` and
-  :data:`calendar.FEBRUARY`.
-  (Contributed by Prince Roshan in :gh:`103636`.)
-
-* :attr:`codeobject.co_lnotab`: use the :meth:`codeobject.co_lines` method
-  instead.
-
-* :mod:`datetime`:
-
-  * :meth:`~datetime.datetime.utcnow`:
-    use ``datetime.datetime.now(tz=datetime.UTC)``.
-  * :meth:`~datetime.datetime.utcfromtimestamp`:
-    use ``datetime.datetime.fromtimestamp(timestamp, tz=datetime.UTC)``.
-
-* :mod:`gettext`: Plural value must be an integer.
-
-* :mod:`importlib`:
-
-  * ``load_module()`` method: use ``exec_module()`` instead.
-  * :func:`~importlib.util.cache_from_source` *debug_override* parameter is
-    deprecated: use the *optimization* parameter instead.
-
-* :mod:`importlib.metadata`:
-
-  * ``EntryPoints`` tuple interface.
-  * Implicit ``None`` on return values.
-
-* :mod:`mailbox`: Use of StringIO input and text mode is deprecated, use
-  BytesIO and binary mode instead.
-
-* :mod:`os`: Calling :func:`os.register_at_fork` in multi-threaded process.
-
-* :class:`!pydoc.ErrorDuringImport`: A tuple value for *exc_info* parameter is
-  deprecated, use an exception instance.
-
-* :mod:`re`: More strict rules are now applied for numerical group references
-  and group names in regular expressions.  Only sequence of ASCII digits is now
-  accepted as a numerical reference.  The group name in bytes patterns and
-  replacement strings can now only contain ASCII letters and digits and
-  underscore.
-  (Contributed by Serhiy Storchaka in :gh:`91760`.)
-
-* :mod:`!sre_compile`, :mod:`!sre_constants` and :mod:`!sre_parse` modules.
-
-* :mod:`ssl` options and protocols:
-
-  * :class:`ssl.SSLContext` without protocol argument is deprecated.
-  * :class:`ssl.SSLContext`: :meth:`~ssl.SSLContext.set_npn_protocols` and
-    :meth:`!selected_npn_protocol` are deprecated: use ALPN
-    instead.
-  * ``ssl.OP_NO_SSL*`` options
-  * ``ssl.OP_NO_TLS*`` options
-  * ``ssl.PROTOCOL_SSLv3``
-  * ``ssl.PROTOCOL_TLS``
-  * ``ssl.PROTOCOL_TLSv1``
-  * ``ssl.PROTOCOL_TLSv1_1``
-  * ``ssl.PROTOCOL_TLSv1_2``
-  * ``ssl.TLSVersion.SSLv3``
-  * ``ssl.TLSVersion.TLSv1``
-  * ``ssl.TLSVersion.TLSv1_1``
-
-* :func:`sysconfig.is_python_build` *check_home* parameter is deprecated and
-  ignored.
-
-* :mod:`threading` methods:
-
-  * :meth:`!threading.Condition.notifyAll`: use :meth:`~threading.Condition.notify_all`.
-  * :meth:`!threading.Event.isSet`: use :meth:`~threading.Event.is_set`.
-  * :meth:`!threading.Thread.isDaemon`, :meth:`threading.Thread.setDaemon`:
-    use :attr:`threading.Thread.daemon` attribute.
-  * :meth:`!threading.Thread.getName`, :meth:`threading.Thread.setName`:
-    use :attr:`threading.Thread.name` attribute.
-  * :meth:`!threading.currentThread`: use :meth:`threading.current_thread`.
-  * :meth:`!threading.activeCount`: use :meth:`threading.active_count`.
-
-* :class:`typing.Text` (:gh:`92332`).
-
-* :class:`unittest.IsolatedAsyncioTestCase`: it is deprecated to return a value
-  that is not ``None`` from a test case.
-
-* :mod:`urllib.parse` deprecated functions: :func:`~urllib.parse.urlparse` instead
-
-  * ``splitattr()``
-  * ``splithost()``
-  * ``splitnport()``
-  * ``splitpasswd()``
-  * ``splitport()``
-  * ``splitquery()``
-  * ``splittag()``
-  * ``splittype()``
-  * ``splituser()``
-  * ``splitvalue()``
-  * ``to_bytes()``
+* Add the :c:func:`PySys_AuditTuple` function
+  as an alternative to :c:func:`PySys_Audit`
+  that takes event arguments as a Python :class:`tuple` object.
+  (Contributed by Victor Stinner in :gh:`85283`.)
 
-* :mod:`urllib.request`: :class:`~urllib.request.URLopener` and
-  :class:`~urllib.request.FancyURLopener` style of invoking requests is
-  deprecated. Use newer :func:`~urllib.request.urlopen` functions and methods.
+* Add the :c:func:`PyThreadState_GetUnchecked()` function
+  as an alternative to :c:func:`PyThreadState_Get()`
+  that doesn't kill the process with a fatal error if it is ``NULL``.
+  The caller is responsible for checking if the result is ``NULL``.
+  (Contributed by Victor Stinner in :gh:`108867`.)
 
-* :mod:`wsgiref`: ``SimpleHandler.stdout.write()`` should not do partial
-  writes.
+* Add the :c:func:`PyType_GetFullyQualifiedName` function
+  to get the type's fully qualified name.
+  The module name is prepended if :attr:`type.__module__` is
+  a string and is not equal to either ``'builtins'`` or ``'__main__'``.
+  (Contributed by Victor Stinner in :gh:`111696`.)
 
-* :meth:`zipimport.zipimporter.load_module` is deprecated:
-  use :meth:`~zipimport.zipimporter.exec_module` instead.
+* Add the :c:func:`PyType_GetModuleName` function
+  to get the type's module name. This is equivalent to getting the
+  :attr:`type.__module__` attribute.
+  (Contributed by Eric Snow and Victor Stinner in :gh:`111696`.)
 
+* Add the :c:func:`PyUnicode_EqualToUTF8AndSize`
+  and :c:func:`PyUnicode_EqualToUTF8` functions
+  to compare a Unicode object with a :c:expr:`const char*` UTF-8 encoded string
+  and ``1`` if they are equal or ``0`` otherwise.
+  These functions do not raise exceptions.
+  (Contributed by Serhiy Storchaka in :gh:`110289`.)
 
-CPython Bytecode Changes
-========================
+* Add the :c:func:`PyWeakref_GetRef` function
+  as an alternative to  :c:func:`PyWeakref_GetObject`
+  that returns a :term:`strong reference`
+  or ``NULL`` if the referent is no longer live.
+  (Contributed by Victor Stinner in :gh:`105927`.)
 
-* The oparg of ``YIELD_VALUE`` is now ``1`` if the yield is part of a
-  yield-from or await, and ``0`` otherwise. The oparg of ``RESUME`` was
-  changed to add a bit indicating whether the except-depth is 1, which
-  is needed to optimize closing of generators.
-  (Contributed by Irit Katriel in :gh:`111354`.)
+* Add fixed variants of functions which silently ignore errors:
 
+  * :c:func:`PyObject_HasAttrWithError` replaces :c:func:`PyObject_HasAttr`.
+  * :c:func:`PyObject_HasAttrStringWithError`
+    replaces :c:func:`PyObject_HasAttrString`.
+  * :c:func:`PyMapping_HasKeyWithError` replaces :c:func:`PyMapping_HasKey`.
+  * :c:func:`PyMapping_HasKeyStringWithError`
+    replaces :c:func:`PyMapping_HasKeyString`.
 
-C API Changes
-=============
+  The new functions return ``-1`` for errors
+  and the standard ``1`` for true and ``0`` for false.
 
-New Features
-------------
+  (Contributed by Serhiy Storchaka in :gh:`108511`.)
+
+
+Changed C APIs
+--------------
+
+* The *keywords* parameter of :c:func:`PyArg_ParseTupleAndKeywords`
+  and :c:func:`PyArg_VaParseTupleAndKeywords`
+  now has type :c:expr:`char * const *` in C
+  and :c:expr:`const char * const *` in C++,
+  instead of :c:expr:`char **`.
+  In C++, this makes these functions compatible with arguments
+  of type :c:expr:`const char * const *`, :c:expr:`const char **`,
+  or :c:expr:`char * const *` without an explicit type cast.
+  In C, the functions only support arguments of type :c:expr:`char * const *`.
+  This can be overridden with the :c:macro:`PY_CXX_CONST` macro.
+  (Contributed by Serhiy Storchaka in :gh:`65210`.)
+
+* :c:func:`PyArg_ParseTupleAndKeywords` now supports
+  non-ASCII keyword parameter names.
+  (Contributed by Serhiy Storchaka in :gh:`110815`.)
+
+* The :c:func:`!PyCode_GetFirstFree` function is now unstable API
+  and is now named :c:func:`PyUnstable_Code_GetFirstFree`.
+  (Contributed by Bogdan Romanyuk in :gh:`115781`.)
+
+* The :c:func:`PyDict_GetItem`, :c:func:`PyDict_GetItemString`,
+  :c:func:`PyMapping_HasKey`, :c:func:`PyMapping_HasKeyString`,
+  :c:func:`PyObject_HasAttr`, :c:func:`PyObject_HasAttrString`,
+  and :c:func:`PySys_GetObject` functions,
+  each of which clears all errors which occurred when calling them
+  now reports these errors using :func:`sys.unraisablehook`.
+  You may replace them with other functions as recommended in the documentation.
+  (Contributed by Serhiy Storchaka in :gh:`106672`.)
+
+* Add support for the ``%T``, ``%#T``, ``%N`` and ``%#N`` formats
+  to :c:func:`PyUnicode_FromFormat`:
+
+  * ``%T``: Get the fully qualified name of an object type
+  * ``%#T``: As above, but use a colon as the separator
+  * ``%N``: Get the fully qualified name of a type
+  * ``%#N``: As above, but use a colon as the separator
+
+  See :pep:`737` for more information.
+  (Contributed by Victor Stinner in :gh:`111696`.)
 
-* You no longer have to define the ``PY_SSIZE_T_CLEAN`` macro before including
-  :file:`Python.h` when using ``#`` formats in
+* You no longer have to define the ``PY_SSIZE_T_CLEAN`` macro before
+  including :file:`Python.h` when using ``#`` formats in
   :ref:`format codes <arg-parsing-string-and-buffers>`.
   APIs accepting the format codes always use ``Py_ssize_t`` for ``#`` formats.
   (Contributed by Inada Naoki in :gh:`104922`.)
 
-* The *keywords* parameter of :c:func:`PyArg_ParseTupleAndKeywords` and
-  :c:func:`PyArg_VaParseTupleAndKeywords` now has type :c:expr:`char * const *`
-  in C and :c:expr:`const char * const *` in C++, instead of :c:expr:`char **`.
-  It makes these functions compatible with arguments of type
-  :c:expr:`const char * const *`, :c:expr:`const char **` or
-  :c:expr:`char * const *` in C++ and :c:expr:`char * const *` in C
-  without an explicit type cast.
-  This can be overridden with the :c:macro:`PY_CXX_CONST` macro.
-  (Contributed by Serhiy Storchaka in :gh:`65210`.)
+* If Python is built in :ref:`debug mode <debug-build>`
+  or :option:`with assertions <--with-assertions>`,
+  :c:func:`PyTuple_SET_ITEM` and :c:func:`PyList_SET_ITEM`
+  now check the index argument with an assertion.
+  (Contributed by Victor Stinner in :gh:`106168`.)
 
-* Add :c:func:`PyImport_AddModuleRef`: similar to
-  :c:func:`PyImport_AddModule`, but return a :term:`strong reference` instead
-  of a :term:`borrowed reference`.
-  (Contributed by Victor Stinner in :gh:`105922`.)
 
-* Add :c:func:`PyWeakref_GetRef` function: similar to
-  :c:func:`PyWeakref_GetObject` but returns a :term:`strong reference`, or
-  ``NULL`` if the referent is no longer live.
-  (Contributed by Victor Stinner in :gh:`105927`.)
+Limited C API Changes
+---------------------
 
-* Add :c:func:`PyObject_GetOptionalAttr` and
-  :c:func:`PyObject_GetOptionalAttrString`, variants of
-  :c:func:`PyObject_GetAttr` and :c:func:`PyObject_GetAttrString` which
-  don't raise :exc:`AttributeError` if the attribute is not found.
-  These variants are more convenient and faster if the missing attribute
-  should not be treated as a failure.
-  (Contributed by Serhiy Storchaka in :gh:`106521`.)
+* The following functions are now included in the Limited C API:
 
-* Add :c:func:`PyMapping_GetOptionalItem` and
-  :c:func:`PyMapping_GetOptionalItemString`: variants of
-  :c:func:`PyObject_GetItem` and :c:func:`PyMapping_GetItemString` which don't
-  raise :exc:`KeyError` if the key is not found.
-  These variants are more convenient and faster if the missing key should not
-  be treated as a failure.
-  (Contributed by Serhiy Storchaka in :gh:`106307`.)
+  * :c:func:`PyMem_RawMalloc`
+  * :c:func:`PyMem_RawCalloc`
+  * :c:func:`PyMem_RawRealloc`
+  * :c:func:`PyMem_RawFree`
+  * :c:func:`PySys_Audit`
+  * :c:func:`PySys_AuditTuple`
+  * :c:func:`PyType_GetModuleByDef`
 
-* Add fixed variants of functions which silently ignore errors:
+  (Contributed by Victor Stinner in :gh:`85283`, :gh:`85283`, and :gh:`116936`.)
 
-  - :c:func:`PyObject_HasAttrWithError` replaces :c:func:`PyObject_HasAttr`.
-  - :c:func:`PyObject_HasAttrStringWithError` replaces :c:func:`PyObject_HasAttrString`.
-  - :c:func:`PyMapping_HasKeyWithError` replaces :c:func:`PyMapping_HasKey`.
-  - :c:func:`PyMapping_HasKeyStringWithError` replaces :c:func:`PyMapping_HasKeyString`.
+* Python built with :option:`--with-trace-refs` (tracing references)
+  now supports the :ref:`Limited API <limited-c-api>`.
+  (Contributed by Victor Stinner in :gh:`108634`.)
 
-  New functions return not only ``1`` for true and ``0`` for false, but also
-  ``-1`` for error.
 
-  (Contributed by Serhiy Storchaka in :gh:`108511`.)
+Removed C APIs
+--------------
 
-* If Python is built in :ref:`debug mode <debug-build>` or :option:`with
-  assertions <--with-assertions>`, :c:func:`PyTuple_SET_ITEM` and
-  :c:func:`PyList_SET_ITEM` now check the index argument with an assertion.
-  (Contributed by Victor Stinner in :gh:`106168`.)
+* Remove several functions, macros, variables, etc
+  with names prefixed by ``_Py`` or ``_PY`` (which are considered private).
+  If your project is affected  by one of these removals
+  and you believe that the removed API should remain available,
+  please :ref:`open a new issue <using-the-tracker>` to request a public C API
+  and add ``cc: @vstinner`` to the issue to notify Victor Stinner.
+  (Contributed by Victor Stinner in :gh:`106320`.)
 
-* Add :c:func:`PyModule_Add` function: similar to
-  :c:func:`PyModule_AddObjectRef` and :c:func:`PyModule_AddObject` but
-  always steals a reference to the value.
-  (Contributed by Serhiy Storchaka in :gh:`86493`.)
+* Remove old buffer protocols deprecated in Python 3.0.
+  Use :ref:`bufferobjects` instead.
 
-* Add :c:func:`PyDict_GetItemRef` and :c:func:`PyDict_GetItemStringRef`
-  functions: similar to :c:func:`PyDict_GetItemWithError` but returning a
-  :term:`strong reference` instead of a :term:`borrowed reference`. Moreover,
-  these functions return -1 on error and so checking ``PyErr_Occurred()`` is
-  not needed.
-  (Contributed by Victor Stinner in :gh:`106004`.)
+  * :c:func:`!PyObject_CheckReadBuffer`:
+    Use :c:func:`PyObject_CheckBuffer` to test
+    whether the object supports the buffer protocol.
+    Note that :c:func:`PyObject_CheckBuffer` doesn't guarantee
+    that :c:func:`PyObject_GetBuffer` will succeed.
+    To test if the object is actually readable,
+    see the next example of :c:func:`PyObject_GetBuffer`.
 
-* Added :c:func:`PyDict_SetDefaultRef`, which is similar to
-  :c:func:`PyDict_SetDefault` but returns a :term:`strong reference` instead of
-  a :term:`borrowed reference`. This function returns ``-1`` on error, ``0`` on
-  insertion, and ``1`` if the key was already present in the dictionary.
-  (Contributed by Sam Gross in :gh:`112066`.)
+  * :c:func:`!PyObject_AsCharBuffer`, :c:func:`!PyObject_AsReadBuffer`:
+    Use :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
 
-* Add :c:func:`PyDict_ContainsString` function: same as
-  :c:func:`PyDict_Contains`, but *key* is specified as a :c:expr:`const char*`
-  UTF-8 encoded bytes string, rather than a :c:expr:`PyObject*`.
-  (Contributed by Victor Stinner in :gh:`108314`.)
+    .. code-block:: c
 
-* Added :c:func:`PyList_GetItemRef` function: similar to
-  :c:func:`PyList_GetItem` but returns a :term:`strong reference` instead of
-  a :term:`borrowed reference`.
+       Py_buffer view;
+       if (PyObject_GetBuffer(obj, &view, PyBUF_SIMPLE) < 0) {
+           return NULL;
+       }
+       // Use `view.buf` and `view.len` to read from the buffer.
+       // You may need to cast buf as `(const char*)view.buf`.
+       PyBuffer_Release(&view);
 
-* Add :c:func:`Py_IsFinalizing` function: check if the main Python interpreter is
-  :term:`shutting down <interpreter shutdown>`.
-  (Contributed by Victor Stinner in :gh:`108014`.)
+  * :c:func:`!PyObject_AsWriteBuffer`:
+    Use :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
 
-* Add :c:func:`PyLong_AsInt` function: similar to :c:func:`PyLong_AsLong`, but
-  store the result in a C :c:expr:`int` instead of a C :c:expr:`long`.
-  Previously, it was known as the private function :c:func:`!_PyLong_AsInt`
-  (with an underscore prefix).
-  (Contributed by Victor Stinner in :gh:`108014`.)
+    .. code-block:: c
 
-* Python built with :file:`configure` :option:`--with-trace-refs` (tracing
-  references) now supports the :ref:`Limited API <limited-c-api>`.
-  (Contributed by Victor Stinner in :gh:`108634`.)
+       Py_buffer view;
+       if (PyObject_GetBuffer(obj, &view, PyBUF_WRITABLE) < 0) {
+           return NULL;
+       }
+       // Use `view.buf` and `view.len` to write to the buffer.
+       PyBuffer_Release(&view);
 
-* Add :c:func:`PyObject_VisitManagedDict` and
-  :c:func:`PyObject_ClearManagedDict` functions which must be called by the
-  traverse and clear functions of a type using
-  :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag.  The `pythoncapi-compat project
-  <https://github.com/python/pythoncapi-compat/>`__ can be used to get these
-  functions on Python 3.11 and 3.12.
-  (Contributed by Victor Stinner in :gh:`107073`.)
+  (Contributed by Inada Naoki in :gh:`85275`.)
 
-* Add :c:func:`PyUnicode_EqualToUTF8AndSize` and :c:func:`PyUnicode_EqualToUTF8`
-  functions: compare Unicode object with a :c:expr:`const char*` UTF-8 encoded
-  string and return true (``1``) if they are equal, or false (``0``) otherwise.
-  These functions do not raise exceptions.
-  (Contributed by Serhiy Storchaka in :gh:`110289`.)
+* Remove various functions deprecated in Python 3.9:
 
-* Add :c:func:`PyThreadState_GetUnchecked()` function: similar to
-  :c:func:`PyThreadState_Get()`, but don't kill the process with a fatal error
-  if it is NULL. The caller is responsible to check if the result is NULL.
-  Previously, the function was private and known as
-  ``_PyThreadState_UncheckedGet()``.
-  (Contributed by Victor Stinner in :gh:`108867`.)
+  * :c:func:`!PyEval_CallObject`, :c:func:`!PyEval_CallObjectWithKeywords`:
+    Use :c:func:`PyObject_CallNoArgs` or :c:func:`PyObject_Call` instead.
 
-* Add :c:func:`PySys_AuditTuple` function: similar to :c:func:`PySys_Audit`,
-  but pass event arguments as a Python :class:`tuple` object.
-  (Contributed by Victor Stinner in :gh:`85283`.)
+    .. warning::
 
-* :c:func:`PyArg_ParseTupleAndKeywords` now supports non-ASCII keyword
-  parameter names.
-  (Contributed by Serhiy Storchaka in :gh:`110815`.)
+       In :c:func:`PyObject_Call`, positional arguments must be a :class:`tuple`
+       and must not be ``NULL``,
+       and keyword arguments must be a :class:`dict` or ``NULL``,
+       whereas the removed functions checked argument types
+       and accepted ``NULL`` positional and keyword arguments.
+       To replace ``PyEval_CallObjectWithKeywords(func, NULL, kwargs)`` with
+       :c:func:`PyObject_Call`,
+       pass an empty tuple as positional arguments using
+       :c:func:`PyTuple_New(0) <PyTuple_New>`.
 
-* Add :c:func:`PyMem_RawMalloc`, :c:func:`PyMem_RawCalloc`,
-  :c:func:`PyMem_RawRealloc` and :c:func:`PyMem_RawFree` to the limited C API
-  (version 3.13).
-  (Contributed by Victor Stinner in :gh:`85283`.)
+  * :c:func:`!PyEval_CallFunction`:
+    Use :c:func:`PyObject_CallFunction` instead.
+  * :c:func:`!PyEval_CallMethod`:
+    Use :c:func:`PyObject_CallMethod` instead.
+  * :c:func:`!PyCFunction_Call`:
+    Use :c:func:`PyObject_Call` instead.
 
-* Add :c:func:`PySys_Audit` and :c:func:`PySys_AuditTuple` functions to the
-  limited C API.
-  (Contributed by Victor Stinner in :gh:`85283`.)
+  (Contributed by Victor Stinner in :gh:`105107`.)
 
-* Add :c:func:`PyErr_FormatUnraisable` function: similar to
-  :c:func:`PyErr_WriteUnraisable`, but allow customizing the warning message.
-  (Contributed by Serhiy Storchaka in :gh:`108082`.)
+* Remove the following old functions to configure the Python initialization,
+  deprecated in Python 3.11:
 
-* Add :c:func:`PyList_Extend` and :c:func:`PyList_Clear` functions: similar to
-  Python ``list.extend()`` and ``list.clear()`` methods.
-  (Contributed by Victor Stinner in :gh:`111138`.)
+  * :c:func:`!PySys_AddWarnOptionUnicode`:
+    Use :c:member:`PyConfig.warnoptions` instead.
+  * :c:func:`!PySys_AddWarnOption`:
+    Use :c:member:`PyConfig.warnoptions` instead.
+  * :c:func:`!PySys_AddXOption`:
+    Use :c:member:`PyConfig.xoptions` instead.
+  * :c:func:`!PySys_HasWarnOptions`:
+    Use :c:member:`PyConfig.xoptions` instead.
+  * :c:func:`!PySys_SetPath`:
+    Set :c:member:`PyConfig.module_search_paths` instead.
+  * :c:func:`!Py_SetPath`:
+    Set :c:member:`PyConfig.module_search_paths` instead.
+  * :c:func:`!Py_SetStandardStreamEncoding`:
+    Set :c:member:`PyConfig.stdio_encoding` instead,
+    and set also maybe :c:member:`PyConfig.legacy_windows_stdio` (on Windows).
+  * :c:func:`!_Py_SetProgramFullPath`:
+    Set :c:member:`PyConfig.executable` instead.
 
-* Add :c:func:`PyDict_Pop` and :c:func:`PyDict_PopString` functions: remove a
-  key from a dictionary and optionally return the removed value. This is
-  similar to :meth:`dict.pop`, but without the default value and not raising
-  :exc:`KeyError` if the key is missing.
-  (Contributed by Stefan Behnel and Victor Stinner in :gh:`111262`.)
+  Use the new :c:type:`PyConfig` API of the :ref:`Python Initialization
+  Configuration <init-config>` instead (:pep:`587`), added to Python 3.8.
+  (Contributed by Victor Stinner in :gh:`105145`.)
 
-* Add :c:func:`Py_HashPointer` function to hash a pointer.
-  (Contributed by Victor Stinner in :gh:`111545`.)
+* Remove :c:func:`!PyEval_AcquireLock` and :c:func:`!PyEval_ReleaseLock` functions,
+  deprecated in Python 3.2.
+  They didn't update the current thread state.
+  They can be replaced with:
 
-* Add :c:func:`PyObject_GenericHash` function that implements the default
-  hashing function of a Python object.
-  (Contributed by Serhiy Storchaka in :gh:`113024`.)
+  * :c:func:`PyEval_SaveThread` and :c:func:`PyEval_RestoreThread`;
+  * low-level :c:func:`PyEval_AcquireThread` and :c:func:`PyEval_RestoreThread`;
+  * or :c:func:`PyGILState_Ensure` and :c:func:`PyGILState_Release`.
 
-* Add PyTime C API:
+  (Contributed by Victor Stinner in :gh:`105182`.)
 
-  * :c:type:`PyTime_t` type.
-  * :c:var:`PyTime_MIN` and :c:var:`PyTime_MAX` constants.
-  * Add functions:
+* Remove the :c:func:`!PyEval_ThreadsInitialized` function,
+  deprecated in Python 3.9.
+  Since Python 3.7, :c:func:`!Py_Initialize` always creates the GIL:
+  calling :c:func:`!PyEval_InitThreads` does nothing and
+  :c:func:`!PyEval_ThreadsInitialized` always returns non-zero.
+  (Contributed by Victor Stinner in :gh:`105182`.)
 
-    * :c:func:`PyTime_AsSecondsDouble`.
-    * :c:func:`PyTime_Monotonic`.
-    * :c:func:`PyTime_MonotonicRaw`.
-    * :c:func:`PyTime_PerfCounter`.
-    * :c:func:`PyTime_PerfCounterRaw`.
-    * :c:func:`PyTime_Time`.
-    * :c:func:`PyTime_TimeRaw`.
+* Remove the :c:func:`!_PyInterpreterState_Get` alias to
+  :c:func:`PyInterpreterState_Get()`
+  which was kept for backward compatibility with Python 3.8.
+  The `pythoncapi-compat project`_ can be used to get
+  :c:func:`PyInterpreterState_Get()` on Python 3.8 and older.
+  (Contributed by Victor Stinner in :gh:`106320`.)
 
-  (Contributed by Victor Stinner and Petr Viktorin in :gh:`110850`.)
+* Remove the private :c:func:`!_PyObject_FastCall` function:
+  use :c:func:`!PyObject_Vectorcall` which is available since Python 3.8
+  (:pep:`590`).
+  (Contributed by Victor Stinner in :gh:`106023`.)
 
-* Add :c:func:`PyLong_AsNativeBytes`, :c:func:`PyLong_FromNativeBytes` and
-  :c:func:`PyLong_FromUnsignedNativeBytes` functions to simplify converting
-  between native integer types and Python :class:`int` objects.
-  (Contributed by Steve Dower in :gh:`111140`.)
+* Remove the ``cpython/pytime.h`` header file,
+  which only contained private functions.
+  (Contributed by Victor Stinner in :gh:`106316`.)
 
-* Add :c:func:`PyType_GetFullyQualifiedName` function to get the type's fully
-  qualified name. Equivalent to ``f"{type.__module__}.{type.__qualname__}"``,
-  or ``type.__qualname__`` if ``type.__module__`` is not a string or is equal
-  to ``"builtins"``.
-  (Contributed by Victor Stinner in :gh:`111696`.)
+* Remove the undocumented ``PY_TIMEOUT_MAX`` constant from the limited C API.
+  (Contributed by Victor Stinner in :gh:`110014`.)
 
-* Add :c:func:`PyType_GetModuleName` function to get the type's module name.
-  Equivalent to getting the ``type.__module__`` attribute.
-  (Contributed by Eric Snow and Victor Stinner in :gh:`111696`.)
+* Remove the old trashcan macros ``Py_TRASHCAN_SAFE_BEGIN``
+  and ``Py_TRASHCAN_SAFE_END``.
+  Replace both with the new macros ``Py_TRASHCAN_BEGIN``
+  and ``Py_TRASHCAN_END``.
+  (Contributed by Irit Katriel in :gh:`105111`.)
 
-* Add support for ``%T``, ``%#T``, ``%N`` and ``%#N`` formats to
-  :c:func:`PyUnicode_FromFormat`: format the fully qualified name of an object
-  type and of a type: call :c:func:`PyType_GetModuleName`. See :pep:`737` for
-  more information.
-  (Contributed by Victor Stinner in :gh:`111696`.)
+Deprecated C APIs
+-----------------
+
+* Deprecate old Python initialization functions:
+
+  * :c:func:`PySys_ResetWarnOptions`:
+    Clear :data:`sys.warnoptions` and :data:`!warnings.filters` instead.
+  * :c:func:`Py_GetExecPrefix`:
+    Get :data:`sys.exec_prefix` instead.
+  * :c:func:`Py_GetPath`:
+    Get :data:`sys.path` instead.
+  * :c:func:`Py_GetPrefix`:
+    Get :data:`sys.prefix` instead.
+  * :c:func:`Py_GetProgramFullPath`:
+    Get :data:`sys.executable` instead.
+  * :c:func:`Py_GetProgramName`:
+    Get :data:`sys.executable` instead.
+  * :c:func:`Py_GetPythonHome`:
+    Get :c:member:`PyConfig.home`
+    or the :envvar:`PYTHONHOME` environment variable instead.
+
+  (Contributed by Victor Stinner in :gh:`105145`.)
+
+* :term:`Soft deprecate <soft deprecated>` the
+  :c:func:`PyEval_GetBuiltins`, :c:func:`PyEval_GetGlobals`,
+  and :c:func:`PyEval_GetLocals` functions,
+  which return a :term:`borrowed reference`.
+  (Soft deprecated as part of :pep:`667`.)
+
+* Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function,
+  which is just an alias to :c:func:`PyImport_ImportModule` since Python 3.3.
+  (Contributed by Victor Stinner in :gh:`105396`.)
+
+* :term:`Soft deprecate <soft deprecated>` the
+  :c:func:`PyModule_AddObject` function.
+  It should be replaced with :c:func:`PyModule_Add`
+  or :c:func:`PyModule_AddObjectRef`.
+  (Contributed by Serhiy Storchaka in :gh:`86493`.)
+
+* Deprecate the old ``Py_UNICODE`` and ``PY_UNICODE_TYPE`` types
+  and the :c:macro:`!Py_UNICODE_WIDE` define.
+  Use the :c:type:`wchar_t` type directly instead.
+  Since Python 3.3, ``Py_UNICODE`` and ``PY_UNICODE_TYPE``
+  are just aliases to :c:type:`!wchar_t`.
+  (Contributed by Victor Stinner in :gh:`105156`.)
+
+* Deprecate the :c:func:`PyWeakref_GetObject` and
+  :c:func:`PyWeakref_GET_OBJECT` functions,
+  which return a :term:`borrowed reference`.
+  Replace them with the new :c:func:`PyWeakref_GetRef` function,
+  which returns a :term:`strong reference`.
+  The `pythoncapi-compat project`_ can be used to get
+  :c:func:`PyWeakref_GetRef` on Python 3.12 and older.
+  (Contributed by Victor Stinner in :gh:`105927`.)
+
+.. Add deprecations above alphabetically, not here at the end.
 
-* Add :c:func:`Py_GetConstant` and :c:func:`Py_GetConstantBorrowed` functions
-  to get constants. For example, ``Py_GetConstant(Py_CONSTANT_ZERO)`` returns a
-  :term:`strong reference` to the constant zero.
-  (Contributed by Victor Stinner in :gh:`115754`.)
+.. include:: ../deprecations/c-api-pending-removal-in-3.14.rst
 
-* Add :c:func:`PyType_GetModuleByDef` to the limited C API
-  (Contributed by Victor Stinner in :gh:`116936`.)
+.. include:: ../deprecations/c-api-pending-removal-in-3.15.rst
 
-* Add two new functions to the C-API, :c:func:`PyRefTracer_SetTracer` and
-  :c:func:`PyRefTracer_GetTracer`, that allows to track object creation and
-  destruction the same way the :mod:`tracemalloc` module does. (Contributed
-  by Pablo Galindo in :gh:`93502`.)
+.. include:: ../deprecations/c-api-pending-removal-in-future.rst
 
+.. _pythoncapi-compat project: https://github.com/python/pythoncapi-compat/
 
 Build Changes
 =============
 
-* The :file:`configure` option :option:`--with-system-libmpdec` now defaults
-  to ``yes``. The bundled copy of ``libmpdecimal`` will be removed in Python
-  3.15.
+* ``arm64-apple-ios`` and ``arm64-apple-ios-simulator`` are both
+  now :pep:`11` tier 3 platforms.
+  (:ref:`PEP 730 <whatsnew313-platform-support>` written
+  and implementation contributed by Russell Keith-Magee in :gh:`114099`.)
+
+* ``aarch64-linux-android`` and ``x86_64-linux-android`` are both
+  now :pep:`11` tier 3 platforms.
+  (:ref:`PEP 738 <whatsnew313-platform-support>` written
+  and implementation contributed by Malcolm Smith in :gh:`116622`.)
+
+* ``wasm32-wasi`` is now a :pep:`11` tier 2 platform.
+  (Contributed by Brett Cannon in :gh:`115192`.)
+
+* ``wasm32-emscripten`` is no longer a :pep:`11` supported platform.
+  (Contributed by Brett Cannon in :gh:`115192`.)
+
+* Building CPython now requires a compiler with support for the C11 atomic
+  library, GCC built-in atomic functions, or MSVC interlocked intrinsics.
 
-* Autoconf 2.71 and aclocal 1.16.4 are now required to regenerate
+* Autoconf 2.71 and aclocal 1.16.5 are now required to regenerate
   the :file:`configure` script.
-  (Contributed by Christian Heimes in :gh:`89886`.)
+  (Contributed by Christian Heimes in :gh:`89886` and by Victor Stinner in :gh:`112090`.)
 
-* SQLite 3.15.2 or newer is required to build the :mod:`sqlite3` extension module.
+* SQLite 3.15.2 or newer is required to build
+  the :mod:`sqlite3` extension module.
   (Contributed by Erlend Aasland in :gh:`105875`.)
 
-* Python built with :file:`configure` :option:`--with-trace-refs` (tracing
-  references) is now ABI compatible with the Python release build and
-  :ref:`debug build <debug-build>`.
+* CPython now bundles the `mimalloc library`_ by default.
+  It is licensed under the MIT license;
+  see :ref:`mimalloc license <mimalloc-license>`.
+  The bundled mimalloc has custom changes, see :gh:`113141` for details.
+  (Contributed by Dino Viehland in :gh:`109914`.)
+
+  .. _mimalloc library: https://github.com/microsoft/mimalloc/
+
+* The :file:`configure` option :option:`--with-system-libmpdec`
+  now defaults to ``yes``.
+  The bundled copy of ``libmpdecimal`` will be removed in Python 3.15.
+
+* Python built with :file:`configure` :option:`--with-trace-refs`
+  (tracing references) is now ABI compatible with the Python release build
+  and :ref:`debug build <debug-build>`.
   (Contributed by Victor Stinner in :gh:`108634`.)
 
-* Building CPython now requires a compiler with support for the C11 atomic
-  library, GCC built-in atomic functions, or MSVC interlocked intrinsics.
+* On POSIX systems, the pkg-config (``.pc``) filenames now include the ABI
+  flags.  For example, the free-threaded build generates ``python-3.13t.pc``
+  and the debug build generates ``python-3.13d.pc``.
 
 * The ``errno``, ``fcntl``, ``grp``, ``md5``, ``pwd``, ``resource``,
   ``termios``, ``winsound``,
@@ -2106,17 +2600,6 @@ Build Changes
   C extensions are now built with the :ref:`limited C API <limited-c-api>`.
   (Contributed by Victor Stinner in :gh:`85283`.)
 
-* ``wasm32-wasi`` is now a :pep:`11` tier 2 platform.
-  (Contributed by Brett Cannon in :gh:`115192`.)
-
-* ``wasm32-emscripten`` is no longer a :pep:`11` supported platform.
-  (Contributed by Brett Cannon in :gh:`115192`.)
-
-* Python now bundles the `mimalloc library <https://github.com/microsoft/mimalloc>`__.
-  It is licensed under the MIT license; see :ref:`mimalloc license <mimalloc-license>`.
-  The bundled mimalloc has custom changes, see :gh:`113141` for details.
-  (Contributed by Dino Viehland in :gh:`109914`.)
-
 
 Porting to Python 3.13
 ======================
@@ -2127,65 +2610,89 @@ that may require changes to your code.
 Changes in the Python API
 -------------------------
 
-* An :exc:`OSError` is now raised by :func:`getpass.getuser` for any failure to
-  retrieve a username, instead of :exc:`ImportError` on non-Unix platforms or
-  :exc:`KeyError` on Unix platforms where the password database is empty.
-
-* The :mod:`threading` module now expects the :mod:`!_thread` module to have
-  an ``_is_main_interpreter`` attribute.  It is a function with no
-  arguments that returns ``True`` if the current interpreter is the
-  main interpreter.
-
-  Any library or application that provides a custom ``_thread`` module
-  must provide ``_is_main_interpreter()``, just like the module's
-  other "private" attributes.
-  (See :gh:`112826`.)
+.. _pep667-porting-notes-py:
+
+* :ref:`PEP 667 <whatsnew313-locals-semantics>` introduces several changes
+  to the semantics of :func:`locals` and :attr:`f_locals <frame.f_locals>`:
+
+  * Calling :func:`locals` in an :term:`optimized scope` now produces an
+    independent snapshot on each call, and hence no longer implicitly updates
+    previously returned references. Obtaining the legacy CPython behavior now
+    requires explicit calls to update the initially returned dictionary with the
+    results of subsequent calls to :func:`!locals`. Code execution functions that
+    implicitly target :func:`!locals` (such as ``exec`` and ``eval``) must be
+    passed an explicit namespace to access their results in an optimized scope.
+    (Changed as part of :pep:`667`.)
+
+  * Calling :func:`locals` from a comprehension at module or class scope
+    (including via ``exec`` or ``eval``) once more behaves as if the comprehension
+    were running as an independent nested function (i.e. the local variables from
+    the containing scope are not included). In Python 3.12, this had changed
+    to include the local variables from the containing scope when implementing
+    :pep:`709`. (Changed as part of :pep:`667`.)
+
+  * Accessing :attr:`FrameType.f_locals <frame.f_locals>` in an
+    :term:`optimized scope` now returns a write-through proxy rather than a
+    snapshot that gets updated at ill-specified times. If a snapshot is desired,
+    it must be created explicitly with ``dict`` or the proxy's ``.copy()`` method.
+    (Changed as part of :pep:`667`.)
+
+* :class:`functools.partial` now emits a :exc:`FutureWarning`
+  when used as a method.
+  The behavior will change in future Python versions.
+  Wrap it in :func:`staticmethod` if you want to preserve the old behavior.
+  (Contributed by Serhiy Storchaka in :gh:`121027`.)
+
+* An :exc:`OSError` is now raised by :func:`getpass.getuser`
+  for any failure to retrieve a username,
+  instead of :exc:`ImportError` on non-Unix platforms
+  or :exc:`KeyError` on Unix platforms where the password database is empty.
+
+* The value of the :attr:`!mode` attribute of :class:`gzip.GzipFile`
+  is now a string (``'rb'`` or ``'wb'``) instead of an integer (``1`` or ``2``).
+  The value of the :attr:`!mode` attribute of the readable file-like object
+  returned by :meth:`zipfile.ZipFile.open` is now ``'rb'`` instead of ``'r'``.
+  (Contributed by Serhiy Storchaka in :gh:`115961`.)
 
-* :class:`mailbox.Maildir` now ignores files with a leading dot.
+* :class:`mailbox.Maildir` now ignores files with a leading dot (``.``).
   (Contributed by Zackery Spytz in :gh:`65559`.)
 
 * :meth:`pathlib.Path.glob` and :meth:`~pathlib.Path.rglob` now return both
-  files and directories if a pattern that ends with "``**``" is given, rather
-  than directories only. Users may add a trailing slash to match only
-  directories.
+  files and directories if a pattern that ends with "``**``" is given,
+  rather than directories only.
+  Add a trailing slash to keep the previous behavior and only match directories.
 
-* The value of the :attr:`!mode` attribute of :class:`gzip.GzipFile` was
-  changed from integer (``1`` or ``2``) to string (``'rb'`` or ``'wb'``).
-  The value of the :attr:`!mode` attribute of the readable file-like object
-  returned by :meth:`zipfile.ZipFile.open` was changed from ``'r'`` to ``'rb'``.
-  (Contributed by Serhiy Storchaka in :gh:`115961`.)
+* The :mod:`threading` module now expects the :mod:`!_thread` module
+  to have an :func:`!_is_main_interpreter` function.
+  This function takes no arguments and returns ``True``
+  if the current interpreter is the main interpreter.
 
-* Callbacks registered in the :mod:`tkinter` module now take arguments as
-  various Python objects (``int``, ``float``, ``bytes``, ``tuple``),
-  not just ``str``.
-  To restore the previous behavior set :mod:`!tkinter` module global
-  :data:`!wantobject` to ``1`` before creating the
-  :class:`!Tk` object or call the :meth:`!wantobject`
-  method of the :class:`!Tk` object with argument ``1``.
-  Calling it with argument ``2`` restores the current default behavior.
-  (Contributed by Serhiy Storchaka in :gh:`66410`.)
+  Any library or application that provides a custom :mod:`!_thread` module
+  must provide :func:`!_is_main_interpreter`,
+  just like the module's other "private" attributes.
+  (:gh:`112826`.)
 
 
 Changes in the C API
 --------------------
 
 * ``Python.h`` no longer includes the ``<ieeefp.h>`` standard header. It was
-  included for the ``finite()`` function which is now provided by the
+  included for the :c:func:`!finite` function which is now provided by the
   ``<math.h>`` header. It should now be included explicitly if needed. Remove
   also the ``HAVE_IEEEFP_H`` macro.
   (Contributed by Victor Stinner in :gh:`108765`.)
 
 * ``Python.h`` no longer includes these standard header files: ``<time.h>``,
   ``<sys/select.h>`` and ``<sys/time.h>``. If needed, they should now be
-  included explicitly. For example, ``<time.h>`` provides the ``clock()`` and
-  ``gmtime()`` functions, ``<sys/select.h>`` provides the ``select()``
-  function, and ``<sys/time.h>`` provides the ``futimes()``, ``gettimeofday()``
-  and ``setitimer()`` functions.
+  included explicitly. For example, ``<time.h>`` provides the :c:func:`!clock` and
+  :c:func:`!gmtime` functions, ``<sys/select.h>`` provides the :c:func:`!select`
+  function, and ``<sys/time.h>`` provides the :c:func:`!futimes`, :c:func:`!gettimeofday`
+  and :c:func:`!setitimer` functions.
   (Contributed by Victor Stinner in :gh:`108765`.)
 
 * On Windows, ``Python.h`` no longer includes the ``<stddef.h>`` standard
   header file. If needed, it should now be included explicitly. For example, it
-  provides ``offsetof()`` function, and ``size_t`` and ``ptrdiff_t`` types.
+  provides :c:func:`!offsetof` function, and ``size_t`` and ``ptrdiff_t`` types.
   Including ``<stddef.h>`` explicitly was already needed by all other
   platforms, the ``HAVE_STDDEF_H`` macro is only defined on Windows.
   (Contributed by Victor Stinner in :gh:`108765`.)
@@ -2226,271 +2733,66 @@ Changes in the C API
   added in Python 3.8 and the old macros were deprecated in Python 3.11.
   (Contributed by Irit Katriel in :gh:`105111`.)
 
-* Functions :c:func:`PyDict_GetItem`, :c:func:`PyDict_GetItemString`,
-  :c:func:`PyMapping_HasKey`, :c:func:`PyMapping_HasKeyString`,
-  :c:func:`PyObject_HasAttr`, :c:func:`PyObject_HasAttrString`, and
-  :c:func:`PySys_GetObject`, which clear all errors which occurred when calling
-  them, now report them using :func:`sys.unraisablehook`.
-  You may replace them with other functions as
-  recommended in the documentation.
-  (Contributed by Serhiy Storchaka in :gh:`106672`.)
-
-* :c:func:`!PyCode_GetFirstFree` is an unstable API now and has been renamed
-  to :c:func:`PyUnstable_Code_GetFirstFree`.
-  (Contributed by Bogdan Romanyuk in :gh:`115781`.)
-
-Removed C APIs
---------------
-
-* Remove many APIs (functions, macros, variables) with names prefixed by
-  ``_Py`` or ``_PY`` (considered as private API). If your project is affected
-  by one of these removals and you consider that the removed API should remain
-  available, please open a new issue to request a public C API and
-  add ``cc @vstinner`` to the issue to notify Victor Stinner.
-  (Contributed by Victor Stinner in :gh:`106320`.)
-
-* Remove functions deprecated in Python 3.9:
-
-  * ``PyEval_CallObject()``, ``PyEval_CallObjectWithKeywords()``: use
-    :c:func:`PyObject_CallNoArgs` or :c:func:`PyObject_Call` instead.
-    Warning: :c:func:`PyObject_Call` positional arguments must be a
-    :class:`tuple` and must not be ``NULL``, keyword arguments must be a
-    :class:`dict` or ``NULL``, whereas removed functions checked arguments type
-    and accepted ``NULL`` positional and keyword arguments.
-    To replace ``PyEval_CallObjectWithKeywords(func, NULL, kwargs)`` with
-    :c:func:`PyObject_Call`, pass an empty tuple as positional arguments using
-    :c:func:`PyTuple_New(0) <PyTuple_New>`.
-  * ``PyEval_CallFunction()``: use :c:func:`PyObject_CallFunction` instead.
-  * ``PyEval_CallMethod()``: use :c:func:`PyObject_CallMethod` instead.
-  * ``PyCFunction_Call()``: use :c:func:`PyObject_Call` instead.
-
-  (Contributed by Victor Stinner in :gh:`105107`.)
-
-* Remove old buffer protocols deprecated in Python 3.0. Use :ref:`bufferobjects` instead.
-
-  * :c:func:`!PyObject_CheckReadBuffer`: Use :c:func:`PyObject_CheckBuffer` to
-    test if the object supports the buffer protocol.
-    Note that :c:func:`PyObject_CheckBuffer` doesn't guarantee that
-    :c:func:`PyObject_GetBuffer` will succeed.
-    To test if the object is actually readable, see the next example
-    of :c:func:`PyObject_GetBuffer`.
-
-  * :c:func:`!PyObject_AsCharBuffer`, :c:func:`!PyObject_AsReadBuffer`:
-    :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
-
-    .. code-block:: c
-
-       Py_buffer view;
-       if (PyObject_GetBuffer(obj, &view, PyBUF_SIMPLE) < 0) {
-           return NULL;
-       }
-       // Use `view.buf` and `view.len` to read from the buffer.
-       // You may need to cast buf as `(const char*)view.buf`.
-       PyBuffer_Release(&view);
-
-  * :c:func:`!PyObject_AsWriteBuffer`: Use
-    :c:func:`PyObject_GetBuffer` and :c:func:`PyBuffer_Release` instead:
-
-    .. code-block:: c
-
-       Py_buffer view;
-       if (PyObject_GetBuffer(obj, &view, PyBUF_WRITABLE) < 0) {
-           return NULL;
-       }
-       // Use `view.buf` and `view.len` to write to the buffer.
-       PyBuffer_Release(&view);
-
-  (Contributed by Inada Naoki in :gh:`85275`.)
-
-* Remove the following old functions to configure the Python initialization,
-  deprecated in Python 3.11:
-
-  * ``PySys_AddWarnOptionUnicode()``: use :c:member:`PyConfig.warnoptions` instead.
-  * ``PySys_AddWarnOption()``: use :c:member:`PyConfig.warnoptions` instead.
-  * ``PySys_AddXOption()``: use :c:member:`PyConfig.xoptions` instead.
-  * ``PySys_HasWarnOptions()``: use :c:member:`PyConfig.xoptions` instead.
-  * ``PySys_SetPath()``: set :c:member:`PyConfig.module_search_paths` instead.
-  * ``Py_SetPath()``: set :c:member:`PyConfig.module_search_paths` instead.
-  * ``Py_SetStandardStreamEncoding()``: set :c:member:`PyConfig.stdio_encoding`
-    instead, and set also maybe :c:member:`PyConfig.legacy_windows_stdio` (on
-    Windows).
-  * ``_Py_SetProgramFullPath()``: set :c:member:`PyConfig.executable` instead.
-
-  Use the new :c:type:`PyConfig` API of the :ref:`Python Initialization
-  Configuration <init-config>` instead (:pep:`587`), added to Python 3.8.
-  (Contributed by Victor Stinner in :gh:`105145`.)
-
-* Remove ``PyEval_ThreadsInitialized()``
-  function, deprecated in Python 3.9. Since Python 3.7, ``Py_Initialize()``
-  always creates the GIL: calling ``PyEval_InitThreads()`` does nothing and
-  ``PyEval_ThreadsInitialized()`` always returned non-zero.
-  (Contributed by Victor Stinner in :gh:`105182`.)
-
-* Remove ``PyEval_AcquireLock()`` and ``PyEval_ReleaseLock()`` functions,
-  deprecated in Python 3.2. They didn't update the current thread state.
-  They can be replaced with:
-
-  * :c:func:`PyEval_SaveThread` and :c:func:`PyEval_RestoreThread`;
-  * low-level :c:func:`PyEval_AcquireThread` and :c:func:`PyEval_RestoreThread`;
-  * or :c:func:`PyGILState_Ensure` and :c:func:`PyGILState_Release`.
-
-  (Contributed by Victor Stinner in :gh:`105182`.)
-
-* Remove private ``_PyObject_FastCall()`` function:
-  use ``PyObject_Vectorcall()`` which is available since Python 3.8
-  (:pep:`590`).
-  (Contributed by Victor Stinner in :gh:`106023`.)
-
-* Remove ``cpython/pytime.h`` header file: it only contained private functions.
-  (Contributed by Victor Stinner in :gh:`106316`.)
-
-* Remove ``_PyInterpreterState_Get()`` alias to
-  :c:func:`PyInterpreterState_Get()` which was kept for backward compatibility
-  with Python 3.8. The `pythoncapi-compat project
-  <https://github.com/python/pythoncapi-compat/>`__ can be used to get
-  :c:func:`PyInterpreterState_Get()` on Python 3.8 and older.
-  (Contributed by Victor Stinner in :gh:`106320`.)
-
-* The :c:func:`PyModule_AddObject` function is now :term:`soft deprecated`:
-  :c:func:`PyModule_Add` or :c:func:`PyModule_AddObjectRef` functions should
-  be used instead.
-  (Contributed by Serhiy Storchaka in :gh:`86493`.)
-
-Deprecated C APIs
------------------
-
-* Deprecate the old ``Py_UNICODE`` and ``PY_UNICODE_TYPE`` types: use directly
-  the :c:type:`wchar_t` type instead. Since Python 3.3, ``Py_UNICODE`` and
-  ``PY_UNICODE_TYPE`` are just aliases to :c:type:`wchar_t`.
-  (Contributed by Victor Stinner in :gh:`105156`.)
-
-* Deprecate old Python initialization functions:
-
-  * :c:func:`PySys_ResetWarnOptions`:
-    clear :data:`sys.warnoptions` and :data:`!warnings.filters` instead.
-  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix` instead.
-  * :c:func:`Py_GetPath`: get :data:`sys.path` instead.
-  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix` instead.
-  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable` instead.
-  * :c:func:`Py_GetProgramName`: get :data:`sys.executable` instead.
-  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
-    :envvar:`PYTHONHOME` environment variable instead.
-
-  Functions scheduled for removal in Python 3.15.
-  (Contributed by Victor Stinner in :gh:`105145`.)
-
-* Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function which is just
-  an alias to :c:func:`PyImport_ImportModule` since Python 3.3.
-  Scheduled for removal in Python 3.15.
-  (Contributed by Victor Stinner in :gh:`105396`.)
-
-* Deprecate the :c:func:`PyWeakref_GetObject` and
-  :c:func:`PyWeakref_GET_OBJECT` functions, which return a :term:`borrowed
-  reference`: use the new :c:func:`PyWeakref_GetRef` function instead, it
-  returns a :term:`strong reference`. The `pythoncapi-compat project
-  <https://github.com/python/pythoncapi-compat/>`__ can be used to get
-  :c:func:`PyWeakref_GetRef` on Python 3.12 and older.
-  (Contributed by Victor Stinner in :gh:`105927`.)
-
-Pending Removal in Python 3.14
-------------------------------
-
-* Creating immutable types (:c:macro:`Py_TPFLAGS_IMMUTABLETYPE`) with mutable
-  bases using the C API.
-
-* Functions to configure the Python initialization, deprecated in Python 3.11:
-
-  * ``PySys_SetArgvEx()``: set :c:member:`PyConfig.argv` instead.
-  * ``PySys_SetArgv()``: set :c:member:`PyConfig.argv` instead.
-  * ``Py_SetProgramName()``: set :c:member:`PyConfig.program_name` instead.
-  * ``Py_SetPythonHome()``: set :c:member:`PyConfig.home` instead.
-
-  The :c:func:`Py_InitializeFromConfig` API should be used with
-  :c:type:`PyConfig` instead.
-
-* Global configuration variables:
-
-  * :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
-  * :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
-  * :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
-  * :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
-  * :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
-  * :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
-  * :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
-  * :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
-  * :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
-  * :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
-  * :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
-  * :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
-  * :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
-  * :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
-    and :c:member:`PyConfig.hash_seed`
-  * :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
-  * :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyPreConfig.legacy_windows_fs_encoding`
-  * :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
-  * :c:var:`!Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
-  * :c:var:`!Py_HasFileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
-  * :c:var:`!Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
-  * :c:var:`!Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
-
-  The :c:func:`Py_InitializeFromConfig` API should be used with
-  :c:type:`PyConfig` instead.
-
-Pending Removal in Python 3.15
-------------------------------
-
-* The bundled copy of ``libmpdecimal``.
-* :c:func:`PyImport_ImportModuleNoBlock`: use :c:func:`PyImport_ImportModule`.
-* :c:func:`PyWeakref_GET_OBJECT`: use :c:func:`PyWeakref_GetRef` instead.
-* :c:func:`PyWeakref_GetObject`: use :c:func:`PyWeakref_GetRef` instead.
-* :c:type:`!Py_UNICODE_WIDE` type: use :c:type:`wchar_t` instead.
-* :c:type:`Py_UNICODE` type: use :c:type:`wchar_t` instead.
-* Python initialization functions:
-
-  * :c:func:`PySys_ResetWarnOptions`: clear :data:`sys.warnoptions` and
-    :data:`!warnings.filters` instead.
-  * :c:func:`Py_GetExecPrefix`: get :data:`sys.exec_prefix` instead.
-  * :c:func:`Py_GetPath`: get :data:`sys.path` instead.
-  * :c:func:`Py_GetPrefix`: get :data:`sys.prefix` instead.
-  * :c:func:`Py_GetProgramFullPath`: get :data:`sys.executable` instead.
-  * :c:func:`Py_GetProgramName`: get :data:`sys.executable` instead.
-  * :c:func:`Py_GetPythonHome`: get :c:member:`PyConfig.home` or
-    :envvar:`PYTHONHOME` environment variable instead.
-
-Pending Removal in Future Versions
-----------------------------------
-
-The following APIs were deprecated in earlier Python versions and will be
-removed, although there is currently no date scheduled for their removal.
-
-* :c:macro:`Py_TPFLAGS_HAVE_FINALIZE`: no needed since Python 3.8.
-* :c:func:`PyErr_Fetch`: use :c:func:`PyErr_GetRaisedException`.
-* :c:func:`PyErr_NormalizeException`: use :c:func:`PyErr_GetRaisedException`.
-* :c:func:`PyErr_Restore`: use :c:func:`PyErr_SetRaisedException`.
-* :c:func:`PyModule_GetFilename`: use :c:func:`PyModule_GetFilenameObject`.
-* :c:func:`PyOS_AfterFork`: use :c:func:`PyOS_AfterFork_Child()`.
-* :c:func:`PySlice_GetIndicesEx`.
-* :c:func:`!PyUnicode_AsDecodedObject`.
-* :c:func:`!PyUnicode_AsDecodedUnicode`.
-* :c:func:`!PyUnicode_AsEncodedObject`.
-* :c:func:`!PyUnicode_AsEncodedUnicode`.
-* :c:func:`PyUnicode_READY`: not needed since Python 3.12.
-* :c:func:`!_PyErr_ChainExceptions`.
-* :c:member:`!PyBytesObject.ob_shash` member:
-  call :c:func:`PyObject_Hash` instead.
-* :c:member:`!PyDictObject.ma_version_tag` member.
-* TLS API:
-
-  * :c:func:`PyThread_create_key`: use :c:func:`PyThread_tss_alloc`.
-  * :c:func:`PyThread_delete_key`: use :c:func:`PyThread_tss_free`.
-  * :c:func:`PyThread_set_key_value`: use :c:func:`PyThread_tss_set`.
-  * :c:func:`PyThread_get_key_value`: use :c:func:`PyThread_tss_get`.
-  * :c:func:`PyThread_delete_key_value`: use :c:func:`PyThread_tss_delete`.
-  * :c:func:`PyThread_ReInitTLS`: no longer needed.
-
-* Remove undocumented ``PY_TIMEOUT_MAX`` constant from the limited C API.
-  (Contributed by Victor Stinner in :gh:`110014`.)
-
+.. _pep667-porting-notes-c:
+
+* :ref:`PEP 667 <whatsnew313-locals-semantics>` introduces several changes
+  to frame-related functions:
+
+  * The effects of mutating the dictionary returned from
+    :c:func:`PyEval_GetLocals` in an :term:`optimized scope` have changed.
+    New dict entries added this way will now *only* be visible to
+    subsequent :c:func:`PyEval_GetLocals` calls in that frame,
+    as :c:func:`PyFrame_GetLocals`, :func:`locals`,
+    and :attr:`FrameType.f_locals <frame.f_locals>` no longer access
+    the same underlying cached dictionary.
+    Changes made to entries for actual variable names and names added via
+    the write-through proxy interfaces will be overwritten on subsequent calls
+    to :c:func:`PyEval_GetLocals` in that frame.
+    The recommended code update depends on how the function was being used,
+    so refer to the deprecation notice on the function for details.
+
+  * Calling :c:func:`PyFrame_GetLocals` in an :term:`optimized scope`
+    now returns a write-through proxy rather than a snapshot
+    that gets updated at ill-specified times.
+    If a snapshot is desired, it must be created explicitly
+    (e.g. with :c:func:`PyDict_Copy`),
+    or by calling the new :c:func:`PyEval_GetFrameLocals` API.
+
+  * :c:func:`!PyFrame_FastToLocals` and :c:func:`!PyFrame_FastToLocalsWithError`
+    no longer have any effect.
+    Calling these functions has been redundant since Python 3.11,
+    when :c:func:`PyFrame_GetLocals` was first introduced.
+
+  * :c:func:`!PyFrame_LocalsToFast` no longer has any effect.
+    Calling this function is redundant now that :c:func:`PyFrame_GetLocals`
+    returns a write-through proxy for :term:`optimized scopes <optimized scope>`.
+
+* Python 3.13 removed many private functions. Some of them can be replaced using these
+  alternatives:
+
+  * ``_PyDict_Pop()``: :c:func:`PyDict_Pop` or :c:func:`PyDict_PopString`;
+  * ``_PyDict_GetItemWithError()``: :c:func:`PyDict_GetItemRef`;
+  * ``_PyErr_WriteUnraisableMsg()``:  :c:func:`PyErr_FormatUnraisable`;
+  * ``_PyEval_SetTrace()``: :c:func:`PyEval_SetTrace` or :c:func:`PyEval_SetTraceAllThreads`;
+  * ``_PyList_Extend()``: :c:func:`PyList_Extend`;
+  * ``_PyLong_AsInt()``: :c:func:`PyLong_AsInt`;
+  * ``_PyMem_RawStrdup()``: ``strdup()``;
+  * ``_PyMem_Strdup()``: ``strdup()``;
+  * ``_PyObject_ClearManagedDict()``: :c:func:`PyObject_ClearManagedDict`;
+  * ``_PyObject_VisitManagedDict()``: :c:func:`PyObject_VisitManagedDict`;
+  * ``_PyThreadState_UncheckedGet()``: :c:func:`PyThreadState_GetUnchecked()`;
+  * ``_PyTime_AsSecondsDouble()``: :c:func:`PyTime_AsSecondsDouble`;
+  * ``_PyTime_GetMonotonicClock()``: :c:func:`PyTime_Monotonic` or :c:func:`PyTime_MonotonicRaw`;
+  * ``_PyTime_GetPerfCounter()``: :c:func:`PyTime_PerfCounter` or :c:func:`PyTime_PerfCounterRaw`;
+  * ``_PyTime_GetSystemClock()``: :c:func:`PyTime_Time` or :c:func:`PyTime_TimeRaw`;
+  * ``_PyTime_MAX``: :c:var:`PyTime_MAX`;
+  * ``_PyTime_MIN``: :c:var:`PyTime_MIN`;
+  * ``_PyTime_t``: :c:type:`PyTime_t`;
+  * ``_Py_HashPointer()``: :c:func:`Py_HashPointer`;
+  * ``_Py_IsFinalizing()``: :c:func:`Py_IsFinalizing`.
+
+  The `pythoncapi-compat project`_ can be used to get most of these new
+  functions on Python 3.12 and older.
 
 Regression Test Changes
 =======================
@@ -2500,3 +2802,14 @@ Regression Test Changes
   option. If used, it specifies a module that should be imported early
   in the lifecycle of the interpreter, before ``site.py`` is executed.
   (Contributed by Łukasz Langa in :gh:`110769`.)
+
+
+Notable changes in 3.13.1
+=========================
+
+sys
+---
+
+* The previously undocumented special function :func:`sys.getobjects`,
+  which only exists in specialized builds of Python, may now return objects
+  from other interpreters than the one it's called in.
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index a6b38207b70c93..7104904c956a7a 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -312,8 +312,8 @@ cluttering source directories, the *pyc* files are now collected in a
 Aside from the filenames and target directories, the new scheme has a few
 aspects that are visible to the programmer:
 
-* Imported modules now have a :attr:`__cached__` attribute which stores the name
-  of the actual file that was imported:
+* Imported modules now have a :attr:`~module.__cached__` attribute which stores
+  the name of the actual file that was imported:
 
    >>> import collections
    >>> collections.__cached__ # doctest: +SKIP
@@ -531,7 +531,7 @@ Some smaller changes made to the core Python language are:
 
   (Proposed and implemented by Mark Dickinson; :issue:`9337`.)
 
-* :class:`memoryview` objects now have a :meth:`~memoryview.release()` method
+* :class:`memoryview` objects now have a :meth:`~memoryview.release` method
   and they also now support the context management protocol.  This allows timely
   release of any resources that were acquired when requesting a buffer from the
   original object.
@@ -1312,7 +1312,7 @@ An early decision to limit the interoperability of various numeric types has
 been relaxed.  It is still unsupported (and ill-advised) to have implicit
 mixing in arithmetic expressions such as ``Decimal('1.1') + float('1.1')``
 because the latter loses information in the process of constructing the binary
-float.  However, since existing floating point value can be converted losslessly
+float.  However, since existing floating-point value can be converted losslessly
 to either a decimal or rational representation, it makes sense to add them to
 the constructor and to support mixed-type comparisons.
 
@@ -1325,7 +1325,7 @@ the constructor and to support mixed-type comparisons.
   and :class:`fractions.Fraction` (:issue:`2531` and :issue:`8188`).
 
 Similar changes were made to :class:`fractions.Fraction` so that the
-:meth:`~fractions.Fraction.from_float()` and :meth:`~fractions.Fraction.from_decimal`
+:meth:`~fractions.Fraction.from_float` and :meth:`~fractions.Fraction.from_decimal`
 methods are no longer needed (:issue:`8294`):
 
 >>> from decimal import Decimal
@@ -1622,7 +1622,7 @@ socket
 
 The :mod:`socket` module has two new improvements.
 
-* Socket objects now have a :meth:`~socket.socket.detach()` method which puts
+* Socket objects now have a :meth:`~socket.socket.detach` method which puts
   the socket into closed state without actually closing the underlying file
   descriptor.  The latter can then be reused for other purposes.
   (Added by Antoine Pitrou; :issue:`8524`.)
@@ -1650,7 +1650,7 @@ for secure (encrypted, authenticated) internet connections:
 * The :func:`ssl.wrap_socket() <ssl.SSLContext.wrap_socket>` constructor function now takes a *ciphers*
   argument.  The *ciphers* string lists the allowed encryption algorithms using
   the format described in the `OpenSSL documentation
-  <https://www.openssl.org/docs/man1.0.2/man1/ciphers.html#CIPHER-LIST-FORMAT>`__.
+  <https://docs.openssl.org/1.0.2/man1/ciphers/#cipher-list-format>`__.
 
 * When linked against recent versions of OpenSSL, the :mod:`ssl` module now
   supports the Server Name Indication extension to the TLS protocol, allowing
@@ -1859,11 +1859,11 @@ asyncore
 --------
 
 :class:`!asyncore.dispatcher` now provides a
-:meth:`!handle_accepted()` method
+:meth:`!handle_accepted` method
 returning a ``(sock, addr)`` pair which is called when a connection has actually
 been established with a new remote endpoint. This is supposed to be used as a
-replacement for old :meth:`!handle_accept()` and avoids
-the user  to call :meth:`!accept()` directly.
+replacement for old :meth:`!handle_accept` and avoids
+the user  to call :meth:`!accept` directly.
 
 (Contributed by Giampaolo Rodolà; :issue:`6706`.)
 
@@ -2321,7 +2321,7 @@ Multi-threading
   intervals and reduced overhead due to lock contention and the number of
   ensuing system calls.  The notion of a "check interval" to allow thread
   switches has been abandoned and replaced by an absolute duration expressed in
-  seconds.  This parameter is tunable through :func:`sys.setswitchinterval()`.
+  seconds.  This parameter is tunable through :func:`sys.setswitchinterval`.
   It currently defaults to 5 milliseconds.
 
   Additional details about the implementation can be read from a `python-dev
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index 29b4034e32821c..7a8eb47cbdb354 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -549,9 +549,11 @@ separation of binary and text data).
 PEP 3155: Qualified name for classes and functions
 ==================================================
 
-Functions and class objects have a new ``__qualname__`` attribute representing
+Functions and class objects have a new :attr:`~definition.__qualname__`
+attribute representing
 the "path" from the module top-level to their definition.  For global functions
-and classes, this is the same as ``__name__``.  For other functions and classes,
+and classes, this is the same as :attr:`~definition.__name__`.
+For other functions and classes,
 it provides better information about where they were actually defined, and
 how they might be accessible from the global scope.
 
@@ -779,8 +781,8 @@ Other Language Changes
 Some smaller changes made to the core Python language are:
 
 * Added support for Unicode name aliases and named sequences.
-  Both :func:`unicodedata.lookup()` and ``'\N{...}'`` now resolve name aliases,
-  and :func:`unicodedata.lookup()` resolves named sequences too.
+  Both :func:`unicodedata.lookup` and ``'\N{...}'`` now resolve name aliases,
+  and :func:`unicodedata.lookup` resolves named sequences too.
 
   (Contributed by Ezio Melotti in :issue:`12753`.)
 
@@ -1097,12 +1099,12 @@ decimal
    C-module and libmpdec written by Stefan Krah.
 
 The new C version of the decimal module integrates the high speed libmpdec
-library for arbitrary precision correctly rounded decimal floating point
+library for arbitrary precision correctly rounded decimal floating-point
 arithmetic. libmpdec conforms to IBM's General Decimal Arithmetic Specification.
 
 Performance gains range from 10x for database applications to 100x for
 numerically intensive applications. These numbers are expected gains
-for standard precisions used in decimal floating point arithmetic. Since
+for standard precisions used in decimal floating-point arithmetic. Since
 the precision is user configurable, the exact figures may vary. For example,
 in integer bignum arithmetic the differences can be significantly higher.
 
@@ -1145,8 +1147,8 @@ API changes
    | :const:`MIN_EMIN` | ``-425000000`` | ``-999999999999999999`` |
    +-------------------+----------------+-------------------------+
 
-* In the context templates (:class:`~decimal.DefaultContext`,
-  :class:`~decimal.BasicContext` and :class:`~decimal.ExtendedContext`)
+* In the context templates (:const:`~decimal.DefaultContext`,
+  :const:`~decimal.BasicContext` and :const:`~decimal.ExtendedContext`)
   the magnitude of :attr:`~decimal.Context.Emax` and
   :attr:`~decimal.Context.Emin` has changed to ``999999``.
 
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 3dd400c3771ed2..71b186aeed7359 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -215,13 +215,12 @@ automatic ``PATH`` modifications to have ``pip`` available from the command
 line by default, otherwise it can still be accessed through the Python
 launcher for Windows as ``py -m pip``.
 
-As `discussed in the PEP`__, platform packagers may choose not to install
+As :pep:`discussed in the PEP <0453#recommendations-for-downstream-distributors>`
+platform packagers may choose not to install
 these commands by default, as long as, when invoked, they provide clear and
 simple directions on how to install them on that platform (usually using
 the system package manager).
 
-__ https://peps.python.org/pep-0453/#recommendations-for-downstream-distributors
-
 .. note::
 
    To avoid conflicts between parallel Python 2 and Python 3 installations,
@@ -1495,7 +1494,7 @@ The dictionary returned by :meth:`.SSLSocket.getpeercert` contains additional
 stat
 ----
 
-The :mod:`stat` module is now backed by a C implementation in :mod:`_stat`. A C
+The :mod:`stat` module is now backed by a C implementation in :mod:`!_stat`. A C
 implementation is required as most of the values aren't standardized and
 are platform-dependent.  (Contributed by Christian Heimes in :issue:`11016`.)
 
@@ -1963,11 +1962,11 @@ Other Improvements
   <https://devguide.python.org/coverage/#measuring-coverage-of-c-code-with-gcov-and-lcov>`_
   will build python, run the test suite, and generate an HTML coverage report
   for the C codebase using ``gcov`` and `lcov
-  <https://ltp.sourceforge.net/coverage/lcov.php>`_.
+  <https://github.com/linux-test-project/lcov>`_.
 
 * The ``-R`` option to the :ref:`python regression test suite <regrtest>` now
   also checks for memory allocation leaks, using
-  :func:`sys.getallocatedblocks()`.  (Contributed by Antoine Pitrou in
+  :func:`sys.getallocatedblocks`.  (Contributed by Antoine Pitrou in
   :issue:`13390`.)
 
 * ``python -m`` now works with namespace packages.
@@ -1980,7 +1979,7 @@ Other Improvements
   now works correctly (previously it silently returned the first python
   module in the file).  (Contributed by Václav Šmilauer in :issue:`16421`.)
 
-* A new opcode, :opcode:`LOAD_CLASSDEREF`, has been added to fix a bug in the
+* A new opcode, :opcode:`!LOAD_CLASSDEREF`, has been added to fix a bug in the
   loading of free variables in class bodies that could be triggered by certain
   uses of :ref:`__prepare__ <prepare>`.  (Contributed by Benjamin Peterson in
   :issue:`17853`.)
@@ -2272,7 +2271,8 @@ Changes in the Python API
   :func:`super` and falling through all the way to the ABCs. For compatibility,
   catch both :exc:`NotImplementedError` or the appropriate exception as needed.
 
-* The module type now initializes the :attr:`__package__` and :attr:`__loader__`
+* The module type now initializes the :attr:`~module.__package__` and
+  :attr:`~module.__loader__`
   attributes to ``None`` by default. To determine if these attributes were set
   in a backwards-compatible fashion, use e.g.
   ``getattr(module, '__loader__', None) is not None``.  (:issue:`17115`.)
@@ -2413,7 +2413,7 @@ Changes in the Python API
   formal public interface the naming has been made consistent (:issue:`18532`).
 
 * Because :mod:`unittest.TestSuite` now drops references to tests after they
-  are run, test harnesses that re-use a :class:`~unittest.TestSuite` to re-run
+  are run, test harnesses that reuse a :class:`~unittest.TestSuite` to re-run
   a set of tests may fail.   Test suites should not be re-used in this fashion
   since it means state is retained between test runs, breaking the test
   isolation that :mod:`unittest` is designed to provide.  However, if the lack
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst
index cd8a903327cc2f..3f3f634171dab6 100644
--- a/Doc/whatsnew/3.5.rst
+++ b/Doc/whatsnew/3.5.rst
@@ -423,8 +423,8 @@ are declared in the annotations::
         return 'Hello ' + name
 
 While these annotations are available at runtime through the usual
-:attr:`__annotations__` attribute, *no automatic type checking happens at
-runtime*.  Instead, it is assumed that a separate off-line type checker
+:attr:`~object.__annotations__` attribute, *no automatic type checking happens
+at runtime*.  Instead, it is assumed that a separate off-line type checker
 (e.g. `mypy <https://mypy-lang.org>`_) will be used for on-demand
 source code analysis.
 
@@ -1667,7 +1667,7 @@ Both the :class:`!SMTPServer` and :class:`!SMTPChannel` classes now
 accept a *decode_data* keyword argument to determine if the ``DATA`` portion of
 the SMTP transaction is decoded using the ``"utf-8"`` codec or is instead
 provided to the
-:meth:`!SMTPServer.process_message()`
+:meth:`!SMTPServer.process_message`
 method as a byte string.  The default is ``True`` for backward compatibility
 reasons, but will change to ``False`` in Python 3.6.  If *decode_data* is set
 to ``False``, the ``process_message`` method must be prepared to accept keyword
@@ -1677,14 +1677,14 @@ arguments.
 The :class:`!SMTPServer` class now advertises the ``8BITMIME`` extension
 (:rfc:`6152`) if *decode_data* has been set ``True``.  If the client
 specifies ``BODY=8BITMIME`` on the ``MAIL`` command, it is passed to
-:meth:`!SMTPServer.process_message()`
+:meth:`!SMTPServer.process_message`
 via the *mail_options* keyword.
 (Contributed by Milan Oberkirch and R.  David Murray in :issue:`21795`.)
 
 The :class:`!SMTPServer` class now also supports the ``SMTPUTF8``
 extension (:rfc:`6531`: Internationalized Email).  If the client specified
 ``SMTPUTF8 BODY=8BITMIME`` on the ``MAIL`` command, they are passed to
-:meth:`!SMTPServer.process_message()`
+:meth:`!SMTPServer.process_message`
 via the *mail_options* keyword.  It is the responsibility of the
 ``process_message`` method to correctly handle the ``SMTPUTF8`` data.
 (Contributed by Milan Oberkirch in :issue:`21725`.)
@@ -1935,8 +1935,8 @@ specifying the namespace in which the code will be running.
 tkinter
 -------
 
-The :mod:`tkinter._fix` module used for setting up the Tcl/Tk environment
-on Windows has been replaced by a private function in the :mod:`_tkinter`
+The :mod:`!tkinter._fix` module used for setting up the Tcl/Tk environment
+on Windows has been replaced by a private function in the :mod:`!_tkinter`
 module which makes no permanent changes to environment variables.
 (Contributed by Zachary Ware in :issue:`20035`.)
 
@@ -2405,7 +2405,7 @@ Changes in the Python API
   error-prone and has been removed in Python 3.5.  See :issue:`13936` for full
   details.
 
-* The :meth:`ssl.SSLSocket.send()` method now raises either
+* The :meth:`ssl.SSLSocket.send` method now raises either
   :exc:`ssl.SSLWantReadError` or :exc:`ssl.SSLWantWriteError`
   on a non-blocking socket if the operation would block.  Previously,
   it would return ``0``.  (Contributed by Nikolaus Rath in :issue:`20951`.)
@@ -2526,9 +2526,9 @@ Changes in the C API
   to format the :func:`repr` of the object.
   (Contributed by Serhiy Storchaka in :issue:`22453`.)
 
-* Because the lack of the :attr:`__module__` attribute breaks pickling and
+* Because the lack of the :attr:`~type.__module__` attribute breaks pickling and
   introspection, a deprecation warning is now raised for builtin types without
-  the :attr:`__module__` attribute.  This would be an AttributeError in
+  the :attr:`~type.__module__` attribute.  This will be an :exc:`AttributeError` in
   the future.
   (Contributed by Serhiy Storchaka in :issue:`20204`.)
 
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index d62beb0bdc8672..7ad7caf29fc739 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -261,7 +261,7 @@ allowed.
 
 The :ref:`string formatting <formatspec>` language also now has support
 for the ``'_'`` option to signal the use of an underscore for a thousands
-separator for floating point presentation types and for integer
+separator for floating-point presentation types and for integer
 presentation type ``'d'``.  For integer presentation types ``'b'``,
 ``'o'``, ``'x'``, and ``'X'``, underscores will be inserted every 4
 digits::
@@ -511,10 +511,10 @@ correct.
 Prior to Python 3.6, data loss could result when using bytes paths on Windows.
 With this change, using bytes to represent paths is now supported on Windows,
 provided those bytes are encoded with the encoding returned by
-:func:`sys.getfilesystemencoding()`, which now defaults to ``'utf-8'``.
+:func:`sys.getfilesystemencoding`, which now defaults to ``'utf-8'``.
 
 Applications that do not use str to represent paths should use
-:func:`os.fsencode()` and :func:`os.fsdecode()` to ensure their bytes are
+:func:`os.fsencode` and :func:`os.fsdecode` to ensure their bytes are
 correctly encoded. To revert to the previous behaviour, set
 :envvar:`PYTHONLEGACYWINDOWSFSENCODING` or call
 :func:`sys._enablelegacywindowsfsencoding`.
@@ -549,7 +549,7 @@ PEP 520: Preserving Class Attribute Definition Order
 
 Attributes in a class definition body have a natural ordering: the same
 order in which the names appear in the source.  This order is now
-preserved in the new class's :attr:`~object.__dict__` attribute.
+preserved in the new class's :attr:`~type.__dict__` attribute.
 
 Also, the effective default class *execution* namespace (returned from
 :ref:`type.__prepare__() <prepare>`) is now an insertion-order-preserving
@@ -780,7 +780,7 @@ for managing secrets, such as account authentication, tokens, and similar.
 
   Note that the pseudo-random generators in the :mod:`random` module
   should *NOT* be used for security purposes.  Use :mod:`secrets`
-  on Python 3.6+ and :func:`os.urandom()` on Python 3.5 and earlier.
+  on Python 3.6+ and :func:`os.urandom` on Python 3.5 and earlier.
 
 .. seealso::
 
@@ -934,7 +934,7 @@ asynchronous generators.
 
 The :func:`~collections.namedtuple` function now accepts an optional
 keyword argument *module*, which, when specified, is used for
-the ``__module__`` attribute of the returned named tuple class.
+the :attr:`~type.__module__` attribute of the returned named tuple class.
 (Contributed by Raymond Hettinger in :issue:`17941`.)
 
 The *verbose* and *rename* arguments for
@@ -1316,7 +1316,7 @@ Storchaka in :issue:`24164`.)
 pickletools
 -----------
 
-:func:`pickletools.dis()` now outputs the implicit memo index for the
+:func:`pickletools.dis` now outputs the implicit memo index for the
 ``MEMOIZE`` opcode.
 (Contributed by Serhiy Storchaka in :issue:`25382`.)
 
@@ -2336,10 +2336,10 @@ Changes in the Python API
 * With the introduction of :exc:`ModuleNotFoundError`, import system consumers
   may start expecting import system replacements to raise that more specific
   exception when appropriate, rather than the less-specific :exc:`ImportError`.
-  To provide future compatibility with such consumers, implementors of
+  To provide future compatibility with such consumers, implementers of
   alternative import systems that completely replace :func:`__import__` will
   need to update their implementations to raise the new subclass when a module
-  can't be found at all. Implementors of compliant plugins to the default
+  can't be found at all. Implementers of compliant plugins to the default
   import system shouldn't need to make any changes, as the default import
   system will raise the new subclass when appropriate.
 
@@ -2366,7 +2366,7 @@ There have been several major changes to the :term:`bytecode` in Python 3.6.
   (Contributed by Demur Rumed with input and reviews from
   Serhiy Storchaka and Victor Stinner in :issue:`26647` and :issue:`28050`.)
 
-* The new :opcode:`FORMAT_VALUE` and :opcode:`BUILD_STRING` opcodes as part
+* The new :opcode:`!FORMAT_VALUE` and :opcode:`BUILD_STRING` opcodes as part
   of the  :ref:`formatted string literal <whatsnew36-pep498>` implementation.
   (Contributed by Eric Smith in :issue:`25483` and
   Serhiy Storchaka in :issue:`27078`.)
@@ -2377,16 +2377,16 @@ There have been several major changes to the :term:`bytecode` in Python 3.6.
 
 * The function call opcodes have been heavily reworked for better performance
   and simpler implementation.
-  The :opcode:`MAKE_FUNCTION`, :opcode:`CALL_FUNCTION`,
-  :opcode:`CALL_FUNCTION_KW` and :opcode:`BUILD_MAP_UNPACK_WITH_CALL` opcodes
+  The :opcode:`MAKE_FUNCTION`, :opcode:`!CALL_FUNCTION`,
+  :opcode:`!CALL_FUNCTION_KW` and :opcode:`!BUILD_MAP_UNPACK_WITH_CALL` opcodes
   have been modified, the new :opcode:`CALL_FUNCTION_EX` and
-  :opcode:`BUILD_TUPLE_UNPACK_WITH_CALL` have been added, and
+  :opcode:`!BUILD_TUPLE_UNPACK_WITH_CALL` have been added, and
   ``CALL_FUNCTION_VAR``, ``CALL_FUNCTION_VAR_KW`` and ``MAKE_CLOSURE`` opcodes
   have been removed.
   (Contributed by Demur Rumed in :issue:`27095`, and Serhiy Storchaka in
   :issue:`27213`, :issue:`28257`.)
 
-* The new :opcode:`SETUP_ANNOTATIONS` and :opcode:`STORE_ANNOTATION` opcodes
+* The new :opcode:`SETUP_ANNOTATIONS` and :opcode:`!STORE_ANNOTATION` opcodes
   have been added to support the new :term:`variable annotation` syntax.
   (Contributed by Ivan Levkivskyi in :issue:`27985`.)
 
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 69d043bcf7efd5..f420fa5c04479b 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -339,7 +339,7 @@ PEP 564: New Time Functions With Nanosecond Resolution
 ------------------------------------------------------
 
 The resolution of clocks in modern systems can exceed the limited precision
-of a floating point number returned by the :func:`time.time` function
+of a floating-point number returned by the :func:`time.time` function
 and its variants.  To avoid loss of precision, :pep:`564` adds six new
 "nanosecond" variants of the existing timer functions to the :mod:`time`
 module:
@@ -353,7 +353,7 @@ module:
 
 The new functions return the number of nanoseconds as an integer value.
 
-`Measurements <https://peps.python.org/pep-0564/#annex-clocks-resolution-in-python>`_
+:pep:`Measurements <0564#annex-clocks-resolution-in-python>`
 show that on Linux and Windows the resolution of :func:`time.time_ns` is
 approximately 3 times better than that of :func:`time.time`.
 
@@ -603,7 +603,7 @@ The new :mod:`importlib.resources` module provides several new APIs and one
 new ABC for access to, opening, and reading *resources* inside packages.
 Resources are roughly similar to files inside packages, but they needn't
 be actual files on the physical file system.  Module loaders can provide a
-:meth:`get_resource_reader()` function which returns
+:meth:`get_resource_reader` function which returns
 a :class:`importlib.abc.ResourceReader` instance to support this
 new API.  Built-in file path loaders and zip file loaders both support this.
 
@@ -1133,7 +1133,7 @@ The MIME type of .bmp has been changed from ``'image/x-ms-bmp'`` to
 msilib
 ------
 
-The new :meth:`!Database.Close()` method can be used
+The new :meth:`!Database.Close` method can be used
 to close the :abbr:`MSI` database.
 (Contributed by Berker Peksag in :issue:`20486`.)
 
@@ -2017,11 +2017,11 @@ importlib
 ---------
 
 Methods
-:meth:`!MetaPathFinder.find_module()`
+:meth:`!MetaPathFinder.find_module`
 (replaced by
 :meth:`MetaPathFinder.find_spec() <importlib.abc.MetaPathFinder.find_spec>`)
 and
-:meth:`!PathEntryFinder.find_loader()`
+:meth:`!PathEntryFinder.find_loader`
 (replaced by
 :meth:`PathEntryFinder.find_spec() <importlib.abc.PathEntryFinder.find_spec>`)
 both deprecated in Python 3.4 now emit :exc:`DeprecationWarning`.
@@ -2048,7 +2048,7 @@ The :mod:`macpath` is now deprecated and will be removed in Python 3.8.
 threading
 ---------
 
-:mod:`dummy_threading` and :mod:`_dummy_thread` have been deprecated.  It is
+:mod:`!dummy_threading` and :mod:`!_dummy_thread` have been deprecated.  It is
 no longer possible to build Python with threading disabled.
 Use :mod:`threading` instead.
 (Contributed by Antoine Pitrou in :issue:`31370`.)
@@ -2184,7 +2184,7 @@ The following features and APIs have been removed from Python 3.7:
   ``socket.socketpair`` on Python 3.5 and newer.
 
 * :mod:`asyncio` no longer exports the :mod:`selectors` and
-  :mod:`_overlapped` modules as ``asyncio.selectors`` and
+  :mod:`!_overlapped` modules as ``asyncio.selectors`` and
   ``asyncio._overlapped``. Replace ``from asyncio import selectors`` with
   ``import selectors``.
 
@@ -2366,7 +2366,7 @@ Changes in the Python API
   positions 2--3.  To match only blank lines, the pattern should be rewritten
   as ``r'(?m)^[^\S\n]*$'``.
 
-  :func:`re.sub()` now replaces empty matches adjacent to a previous
+  :func:`re.sub` now replaces empty matches adjacent to a previous
   non-empty match.  For example ``re.sub('x*', '-', 'abxd')`` returns now
   ``'-a-b--d-'`` instead of ``'-a-b-d-'`` (the first minus between 'b' and
   'd' replaces 'x', and the second minus replaces an empty string between
@@ -2425,7 +2425,7 @@ Changes in the Python API
   to :meth:`ArgumentParser.add_subparsers() <argparse.ArgumentParser.add_subparsers>`.
   (Contributed by Anthony Sottile in :issue:`26510`.)
 
-* :meth:`ast.literal_eval()` is now stricter.  Addition and subtraction of
+* :meth:`ast.literal_eval` is now stricter.  Addition and subtraction of
   arbitrary numbers are no longer allowed.
   (Contributed by Serhiy Storchaka in :issue:`31778`.)
 
@@ -2476,10 +2476,10 @@ avoiding possible problems use new functions :c:func:`PySlice_Unpack` and
 CPython bytecode changes
 ------------------------
 
-There are two new opcodes: :opcode:`LOAD_METHOD` and :opcode:`CALL_METHOD`.
+There are two new opcodes: :opcode:`LOAD_METHOD` and :opcode:`!CALL_METHOD`.
 (Contributed by Yury Selivanov and INADA Naoki in :issue:`26110`.)
 
-The :opcode:`STORE_ANNOTATION` opcode has been removed.
+The :opcode:`!STORE_ANNOTATION` opcode has been removed.
 (Contributed by Mark Shannon in :issue:`32550`.)
 
 
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
index 1356f24547b424..a009ad4c4f3c78 100644
--- a/Doc/whatsnew/3.8.rst
+++ b/Doc/whatsnew/3.8.rst
@@ -936,7 +936,7 @@ Add option ``--json-lines`` to parse every input line as a separate JSON object.
 logging
 -------
 
-Added a *force* keyword argument to :func:`logging.basicConfig()`
+Added a *force* keyword argument to :func:`logging.basicConfig`.
 When set to true, any existing handlers attached
 to the root logger are removed and closed before carrying out the
 configuration specified by the other arguments.
@@ -1077,16 +1077,16 @@ pathlib
 -------
 
 :mod:`pathlib.Path` methods that return a boolean result like
-:meth:`~pathlib.Path.exists()`, :meth:`~pathlib.Path.is_dir()`,
-:meth:`~pathlib.Path.is_file()`, :meth:`~pathlib.Path.is_mount()`,
-:meth:`~pathlib.Path.is_symlink()`, :meth:`~pathlib.Path.is_block_device()`,
-:meth:`~pathlib.Path.is_char_device()`, :meth:`~pathlib.Path.is_fifo()`,
-:meth:`~pathlib.Path.is_socket()` now return ``False`` instead of raising
+:meth:`~pathlib.Path.exists`, :meth:`~pathlib.Path.is_dir`,
+:meth:`~pathlib.Path.is_file`, :meth:`~pathlib.Path.is_mount`,
+:meth:`~pathlib.Path.is_symlink`, :meth:`~pathlib.Path.is_block_device`,
+:meth:`~pathlib.Path.is_char_device`, :meth:`~pathlib.Path.is_fifo`,
+:meth:`~pathlib.Path.is_socket` now return ``False`` instead of raising
 :exc:`ValueError` or its subclass :exc:`UnicodeEncodeError` for paths that
 contain characters unrepresentable at the OS level.
 (Contributed by Serhiy Storchaka in :issue:`33721`.)
 
-Added :meth:`!pathlib.Path.link_to()` which creates a hard link pointing
+Added :meth:`!pathlib.Path.link_to` which creates a hard link pointing
 to a path.
 (Contributed by Joannah Nanjekye in :issue:`26978`)
 Note that ``link_to`` was deprecated in 3.10 and removed in 3.12 in
@@ -1170,13 +1170,13 @@ recursively removing their contents first.
 socket
 ------
 
-Added :meth:`~socket.create_server()` and :meth:`~socket.has_dualstack_ipv6()`
+Added :meth:`~socket.create_server` and :meth:`~socket.has_dualstack_ipv6`
 convenience functions to automate the necessary tasks usually involved when
 creating a server socket, including accepting both IPv4 and IPv6 connections
 on the same socket.  (Contributed by Giampaolo Rodolà in :issue:`17561`.)
 
-The :func:`socket.if_nameindex()`, :func:`socket.if_nametoindex()`, and
-:func:`socket.if_indextoname()` functions have been implemented on Windows.
+The :func:`socket.if_nameindex`, :func:`socket.if_nametoindex`, and
+:func:`socket.if_indextoname` functions have been implemented on Windows.
 (Contributed by Zackery Spytz in :issue:`37007`.)
 
 
@@ -1192,11 +1192,11 @@ post-handshake authentication.
 statistics
 ----------
 
-Added :func:`statistics.fmean` as a faster, floating point variant of
-:func:`statistics.mean()`.  (Contributed by Raymond Hettinger and
+Added :func:`statistics.fmean` as a faster, floating-point variant of
+:func:`statistics.mean`.  (Contributed by Raymond Hettinger and
 Steven D'Aprano in :issue:`35904`.)
 
-Added :func:`statistics.geometric_mean()`
+Added :func:`statistics.geometric_mean`
 (Contributed by Raymond Hettinger in :issue:`27181`.)
 
 Added :func:`statistics.multimode` that returns a list of the most
@@ -1367,10 +1367,10 @@ Added :class:`~unittest.mock.AsyncMock` to support an asynchronous version of
 have been added as well.
 (Contributed by Lisa Roach in :issue:`26467`).
 
-Added :func:`~unittest.addModuleCleanup()` and
-:meth:`~unittest.TestCase.addClassCleanup()` to unittest to support
-cleanups for :func:`~unittest.setUpModule()` and
-:meth:`~unittest.TestCase.setUpClass()`.
+Added :func:`~unittest.addModuleCleanup` and
+:meth:`~unittest.TestCase.addClassCleanup` to unittest to support
+cleanups for :func:`~unittest.setUpModule` and
+:meth:`~unittest.TestCase.setUpClass`.
 (Contributed by Lisa Roach in :issue:`24412`.)
 
 Several mock assert functions now also print a list of actual calls upon
@@ -1432,7 +1432,7 @@ and ``{namespace}*`` which returns all tags in the given namespace.
 (Contributed by Stefan Behnel in :issue:`28238`.)
 
 The :mod:`xml.etree.ElementTree` module provides a new function
-:func:`–xml.etree.ElementTree.canonicalize()` that implements C14N 2.0.
+:func:`–xml.etree.ElementTree.canonicalize` that implements C14N 2.0.
 (Contributed by Stefan Behnel in :issue:`13611`.)
 
 The target object of :class:`xml.etree.ElementTree.XMLParser` can
@@ -1712,7 +1712,7 @@ Deprecated
   the ``l*gettext()`` functions.
   (Contributed by Serhiy Storchaka in :issue:`33710`.)
 
-* The :meth:`~threading.Thread.isAlive()` method of :class:`threading.Thread`
+* The :meth:`~threading.Thread.isAlive` method of :class:`threading.Thread`
   has been deprecated.
   (Contributed by Donghee Na in :issue:`35283`.)
 
@@ -1755,7 +1755,7 @@ The following features and APIs have been removed from Python 3.8:
 *  Starting with Python 3.3, importing ABCs from :mod:`collections` was
    deprecated, and importing should be done from :mod:`collections.abc`. Being
    able to import from collections was marked for removal in 3.8, but has been
-   delayed to 3.9. (See :issue:`36952`.)
+   delayed to 3.9. (See :gh:`81134`.)
 
 * The :mod:`macpath` module, deprecated in Python 3.7, has been removed.
   (Contributed by Victor Stinner in :issue:`35471`.)
@@ -2152,11 +2152,11 @@ CPython bytecode changes
   cleaning-up code for :keyword:`break`, :keyword:`continue` and
   :keyword:`return`.
 
-  Removed opcodes :opcode:`BREAK_LOOP`, :opcode:`CONTINUE_LOOP`,
-  :opcode:`SETUP_LOOP` and :opcode:`SETUP_EXCEPT`.  Added new opcodes
-  :opcode:`ROT_FOUR`, :opcode:`BEGIN_FINALLY`, :opcode:`CALL_FINALLY` and
-  :opcode:`POP_FINALLY`.  Changed the behavior of :opcode:`END_FINALLY`
-  and :opcode:`WITH_CLEANUP_START`.
+  Removed opcodes :opcode:`!BREAK_LOOP`, :opcode:`!CONTINUE_LOOP`,
+  :opcode:`!SETUP_LOOP` and :opcode:`!SETUP_EXCEPT`.  Added new opcodes
+  :opcode:`!ROT_FOUR`, :opcode:`!BEGIN_FINALLY`, :opcode:`!CALL_FINALLY` and
+  :opcode:`!POP_FINALLY`.  Changed the behavior of :opcode:`!END_FINALLY`
+  and :opcode:`!WITH_CLEANUP_START`.
 
   (Contributed by Mark Shannon, Antoine Pitrou and Serhiy Storchaka in
   :issue:`17611`.)
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index e29d37ca120b76..ab1fb8c582c1bf 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -408,8 +408,8 @@ Added :func:`curses.get_escdelay`, :func:`curses.set_escdelay`,
 
 datetime
 --------
-The :meth:`~datetime.date.isocalendar()` of :class:`datetime.date`
-and :meth:`~datetime.datetime.isocalendar()` of :class:`datetime.datetime`
+The :meth:`~datetime.date.isocalendar` of :class:`datetime.date`
+and :meth:`~datetime.datetime.isocalendar` of :class:`datetime.datetime`
 methods now returns a :func:`~collections.namedtuple` instead of a :class:`tuple`.
 (Contributed by Donghee Na in :issue:`24416`.)
 
@@ -610,7 +610,7 @@ convert a wait status to an exit code.
 pathlib
 -------
 
-Added :meth:`pathlib.Path.readlink()` which acts similarly to
+Added :meth:`pathlib.Path.readlink` which acts similarly to
 :func:`os.readlink`.
 (Contributed by Girts Folkmanis in :issue:`30618`)
 
@@ -637,7 +637,8 @@ pydoc
 -----
 
 The documentation string is now shown not only for class, function,
-method etc, but for any object that has its own ``__doc__`` attribute.
+method etc, but for any object that has its own :attr:`~definition.__doc__`
+attribute.
 (Contributed by Serhiy Storchaka in :issue:`40257`.)
 
 random
@@ -891,7 +892,7 @@ Deprecated
 
 * Deprecated the ``split()`` method of :class:`!_tkinter.TkappType` in
   favour of the ``splitlist()`` method which has more consistent and
-  predicable behavior.
+  predictable behavior.
   (Contributed by Serhiy Storchaka in :issue:`38371`.)
 
 * The explicit passing of coroutine objects to :func:`asyncio.wait` has been
@@ -983,13 +984,13 @@ Removed
   (Contributed by Victor Stinner in :issue:`37312`.)
 
 * ``aifc.openfp()`` alias to ``aifc.open()``, ``sunau.openfp()`` alias to
-  ``sunau.open()``, and ``wave.openfp()`` alias to :func:`wave.open()` have been
+  ``sunau.open()``, and ``wave.openfp()`` alias to :func:`wave.open` have been
   removed. They were deprecated since Python 3.7.
   (Contributed by Victor Stinner in :issue:`37320`.)
 
-* The :meth:`!isAlive()` method of :class:`threading.Thread`
+* The :meth:`!isAlive` method of :class:`threading.Thread`
   has been removed. It was deprecated since Python 3.8.
-  Use :meth:`~threading.Thread.is_alive()` instead.
+  Use :meth:`~threading.Thread.is_alive` instead.
   (Contributed by Donghee Na in :issue:`37804`.)
 
 * Methods ``getchildren()`` and ``getiterator()`` of classes
diff --git a/Grammar/python.gram b/Grammar/python.gram
index c04bc641779c04..5a181dc1578b2c 100644
--- a/Grammar/python.gram
+++ b/Grammar/python.gram
@@ -127,7 +127,6 @@ simple_stmt[stmt_ty] (memo):
     | &'nonlocal' nonlocal_stmt
 
 compound_stmt[stmt_ty]:
-    | invalid_compound_stmt
     | &('def' | '@' | 'async') function_def
     | &'if' if_stmt
     | &('class' | '@') class_def
@@ -1317,10 +1316,6 @@ invalid_import_from_targets:
     | token=NEWLINE { 
         RAISE_SYNTAX_ERROR_STARTING_FROM(token, "Expected one or more names after 'import'") }
 
-invalid_compound_stmt:
-    | a='elif' named_expression ':' { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "'elif' must match an if-statement here") }
-    | a='else' ':' { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "'else' must match a valid statement here") }
-
 invalid_with_stmt:
     | ['async'] 'with' ','.(expression ['as' star_target])+ NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
     | ['async'] 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
diff --git a/Include/Python.h b/Include/Python.h
index e05901b9e52b5a..fb2d32d7110447 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -51,6 +51,14 @@
 #  error "The limited API is not currently supported in the free-threaded build"
 #endif
 
+#if defined(Py_GIL_DISABLED) && defined(_MSC_VER)
+#  include <intrin.h>             // __readgsqword()
+#endif
+
+#if defined(Py_GIL_DISABLED) && defined(__MINGW32__)
+#  include <intrin.h>             // __readgsqword()
+#endif
+
 // Include Python header files
 #include "pyport.h"
 #include "pymacro.h"
@@ -60,6 +68,7 @@
 #include "pybuffer.h"
 #include "pystats.h"
 #include "pyatomic.h"
+#include "lock.h"
 #include "object.h"
 #include "objimpl.h"
 #include "typeslots.h"
@@ -119,12 +128,12 @@
 #include "import.h"
 #include "abstract.h"
 #include "bltinmodule.h"
+#include "critical_section.h"
 #include "cpython/pyctype.h"
 #include "pystrtod.h"
 #include "pystrcmp.h"
 #include "fileutils.h"
 #include "cpython/pyfpe.h"
 #include "cpython/tracemalloc.h"
-#include "cpython/optimizer.h"
 
 #endif /* !Py_PYTHON_H */
diff --git a/Include/cpython/bytesobject.h b/Include/cpython/bytesobject.h
index 816823716e9a6f..41537210b748a1 100644
--- a/Include/cpython/bytesobject.h
+++ b/Include/cpython/bytesobject.h
@@ -31,3 +31,7 @@ static inline Py_ssize_t PyBytes_GET_SIZE(PyObject *op) {
     return Py_SIZE(self);
 }
 #define PyBytes_GET_SIZE(self) PyBytes_GET_SIZE(_PyObject_CAST(self))
+
+/* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
+   x must be an iterable object. */
+PyAPI_FUNC(PyObject*) _PyBytes_Join(PyObject *sep, PyObject *x);
diff --git a/Include/cpython/code.h b/Include/cpython/code.h
index ef8f9304ccab56..58d93fcfc1066b 100644
--- a/Include/cpython/code.h
+++ b/Include/cpython/code.h
@@ -24,58 +24,6 @@ typedef struct _Py_GlobalMonitors {
     uint8_t tools[_PY_MONITORING_UNGROUPED_EVENTS];
 } _Py_GlobalMonitors;
 
-typedef struct {
-    union {
-        struct {
-            uint16_t backoff : 4;
-            uint16_t value : 12;
-        };
-        uint16_t as_counter;  // For printf("%#x", ...)
-    };
-} _Py_BackoffCounter;
-
-/* Each instruction in a code object is a fixed-width value,
- * currently 2 bytes: 1-byte opcode + 1-byte oparg.  The EXTENDED_ARG
- * opcode allows for larger values but the current limit is 3 uses
- * of EXTENDED_ARG (see Python/compile.c), for a maximum
- * 32-bit value.  This aligns with the note in Python/compile.c
- * (compiler_addop_i_line) indicating that the max oparg value is
- * 2**32 - 1, rather than INT_MAX.
- */
-
-typedef union {
-    uint16_t cache;
-    struct {
-        uint8_t code;
-        uint8_t arg;
-    } op;
-    _Py_BackoffCounter counter;  // First cache entry of specializable op
-} _Py_CODEUNIT;
-
-
-/* These macros only remain defined for compatibility. */
-#define _Py_OPCODE(word) ((word).op.code)
-#define _Py_OPARG(word) ((word).op.arg)
-
-static inline _Py_CODEUNIT
-_py_make_codeunit(uint8_t opcode, uint8_t oparg)
-{
-    // No designated initialisers because of C++ compat
-    _Py_CODEUNIT word;
-    word.op.code = opcode;
-    word.op.arg = oparg;
-    return word;
-}
-
-static inline void
-_py_set_opcode(_Py_CODEUNIT *word, uint8_t opcode)
-{
-    word->op.code = opcode;
-}
-
-#define _Py_MAKE_CODEUNIT(opcode, oparg) _py_make_codeunit((opcode), (oparg))
-#define _Py_SET_OPCODE(word, opcode) _py_set_opcode(&(word), (opcode))
-
 
 typedef struct {
     PyObject *_co_code;
@@ -246,9 +194,6 @@ Py_DEPRECATED(3.13) static inline int PyCode_GetFirstFree(PyCodeObject *op) {
     return PyUnstable_Code_GetFirstFree(op);
 }
 
-#define _PyCode_CODE(CO) _Py_RVALUE((_Py_CODEUNIT *)(CO)->co_code_adaptive)
-#define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT))
-
 /* Unstable public interface */
 PyAPI_FUNC(PyCodeObject *) PyUnstable_Code_New(
         int, int, int, int, int, PyObject *, PyObject *,
diff --git a/Include/cpython/critical_section.h b/Include/cpython/critical_section.h
new file mode 100644
index 00000000000000..35db3fb6a59ce6
--- /dev/null
+++ b/Include/cpython/critical_section.h
@@ -0,0 +1,134 @@
+#ifndef Py_CPYTHON_CRITICAL_SECTION_H
+#  error "this header file must not be included directly"
+#endif
+
+// Python critical sections
+//
+// Conceptually, critical sections are a deadlock avoidance layer on top of
+// per-object locks. These helpers, in combination with those locks, replace
+// our usage of the global interpreter lock to provide thread-safety for
+// otherwise thread-unsafe objects, such as dict.
+//
+// NOTE: These APIs are no-ops in non-free-threaded builds.
+//
+// Straightforward per-object locking could introduce deadlocks that were not
+// present when running with the GIL. Threads may hold locks for multiple
+// objects simultaneously because Python operations can nest. If threads were
+// to acquire the same locks in different orders, they would deadlock.
+//
+// One way to avoid deadlocks is to allow threads to hold only the lock (or
+// locks) for a single operation at a time (typically a single lock, but some
+// operations involve two locks). When a thread begins a nested operation it
+// could suspend the locks for any outer operation: before beginning the nested
+// operation, the locks for the outer operation are released and when the
+// nested operation completes, the locks for the outer operation are
+// reacquired.
+//
+// To improve performance, this API uses a variation of the above scheme.
+// Instead of immediately suspending locks any time a nested operation begins,
+// locks are only suspended if the thread would block. This reduces the number
+// of lock acquisitions and releases for nested operations, while still
+// avoiding deadlocks.
+//
+// Additionally, the locks for any active operation are suspended around
+// other potentially blocking operations, such as I/O. This is because the
+// interaction between locks and blocking operations can lead to deadlocks in
+// the same way as the interaction between multiple locks.
+//
+// Each thread's critical sections and their corresponding locks are tracked in
+// a stack in `PyThreadState.critical_section`. When a thread calls
+// `_PyThreadState_Detach()`, such as before a blocking I/O operation or when
+// waiting to acquire a lock, the thread suspends all of its active critical
+// sections, temporarily releasing the associated locks. When the thread calls
+// `_PyThreadState_Attach()`, it resumes the top-most (i.e., most recent)
+// critical section by reacquiring the associated lock or locks.  See
+// `_PyCriticalSection_Resume()`.
+//
+// NOTE: Only the top-most critical section is guaranteed to be active.
+// Operations that need to lock two objects at once must use
+// `Py_BEGIN_CRITICAL_SECTION2()`. You *CANNOT* use nested critical sections
+// to lock more than one object at once, because the inner critical section
+// may  suspend the outer critical sections. This API does not provide a way
+// to lock more than two objects at once (though it could be added later
+// if actually needed).
+//
+// NOTE: Critical sections implicitly behave like reentrant locks because
+// attempting to acquire the same lock will suspend any outer (earlier)
+// critical sections. However, they are less efficient for this use case than
+// purposefully designed reentrant locks.
+//
+// Example usage:
+//  Py_BEGIN_CRITICAL_SECTION(op);
+//  ...
+//  Py_END_CRITICAL_SECTION();
+//
+// To lock two objects at once:
+//  Py_BEGIN_CRITICAL_SECTION2(op1, op2);
+//  ...
+//  Py_END_CRITICAL_SECTION2();
+
+typedef struct PyCriticalSection PyCriticalSection;
+typedef struct PyCriticalSection2 PyCriticalSection2;
+
+PyAPI_FUNC(void)
+PyCriticalSection_Begin(PyCriticalSection *c, PyObject *op);
+
+PyAPI_FUNC(void)
+PyCriticalSection_End(PyCriticalSection *c);
+
+PyAPI_FUNC(void)
+PyCriticalSection2_Begin(PyCriticalSection2 *c, PyObject *a, PyObject *b);
+
+PyAPI_FUNC(void)
+PyCriticalSection2_End(PyCriticalSection2 *c);
+
+#ifndef Py_GIL_DISABLED
+# define Py_BEGIN_CRITICAL_SECTION(op)      \
+    {
+# define Py_END_CRITICAL_SECTION()          \
+    }
+# define Py_BEGIN_CRITICAL_SECTION2(a, b)   \
+    {
+# define Py_END_CRITICAL_SECTION2()         \
+    }
+#else /* !Py_GIL_DISABLED */
+
+// NOTE: the contents of this struct are private and may change betweeen
+// Python releases without a deprecation period.
+struct PyCriticalSection {
+    // Tagged pointer to an outer active critical section (or 0).
+    uintptr_t _cs_prev;
+
+    // Mutex used to protect critical section
+    PyMutex *_cs_mutex;
+};
+
+// A critical section protected by two mutexes. Use
+// Py_BEGIN_CRITICAL_SECTION2 and Py_END_CRITICAL_SECTION2.
+// NOTE: the contents of this struct are private and may change betweeen
+// Python releases without a deprecation period.
+struct PyCriticalSection2 {
+    PyCriticalSection _cs_base;
+
+    PyMutex *_cs_mutex2;
+};
+
+# define Py_BEGIN_CRITICAL_SECTION(op)                                  \
+    {                                                                   \
+        PyCriticalSection _py_cs;                                       \
+        PyCriticalSection_Begin(&_py_cs, _PyObject_CAST(op))
+
+# define Py_END_CRITICAL_SECTION()                                      \
+        PyCriticalSection_End(&_py_cs);                                 \
+    }
+
+# define Py_BEGIN_CRITICAL_SECTION2(a, b)                               \
+    {                                                                   \
+        PyCriticalSection2 _py_cs2;                                     \
+        PyCriticalSection2_Begin(&_py_cs2, _PyObject_CAST(a), _PyObject_CAST(b))
+
+# define Py_END_CRITICAL_SECTION2()                                     \
+        PyCriticalSection2_End(&_py_cs2);                               \
+    }
+
+#endif
diff --git a/Include/cpython/initconfig.h b/Include/cpython/initconfig.h
index 5da5ef9e5431b1..20f5c9ad9bb9a8 100644
--- a/Include/cpython/initconfig.h
+++ b/Include/cpython/initconfig.h
@@ -179,6 +179,9 @@ typedef struct PyConfig {
     int use_frozen_modules;
     int safe_path;
     int int_max_str_digits;
+#ifdef __APPLE__
+    int use_system_logger;
+#endif
 
     int cpu_count;
 #ifdef Py_GIL_DISABLED
diff --git a/Include/cpython/lock.h b/Include/cpython/lock.h
new file mode 100644
index 00000000000000..8ee03e82f74dfd
--- /dev/null
+++ b/Include/cpython/lock.h
@@ -0,0 +1,63 @@
+#ifndef Py_CPYTHON_LOCK_H
+#  error "this header file must not be included directly"
+#endif
+
+#define _Py_UNLOCKED    0
+#define _Py_LOCKED      1
+
+// A mutex that occupies one byte. The lock can be zero initialized to
+// represent the unlocked state.
+//
+// Typical initialization:
+//   PyMutex m = (PyMutex){0};
+//
+// Or initialize as global variables:
+//   static PyMutex m;
+//
+// Typical usage:
+//   PyMutex_Lock(&m);
+//   ...
+//   PyMutex_Unlock(&m);
+//
+// The contents of the PyMutex are not part of the public API, but are
+// described to aid in understanding the implementation and debugging. Only
+// the two least significant bits are used. The remaining bits are always zero:
+// 0b00: unlocked
+// 0b01: locked
+// 0b10: unlocked and has parked threads
+// 0b11: locked and has parked threads
+typedef struct PyMutex {
+    uint8_t _bits;  // (private)
+} PyMutex;
+
+// exported function for locking the mutex
+PyAPI_FUNC(void) PyMutex_Lock(PyMutex *m);
+
+// exported function for unlocking the mutex
+PyAPI_FUNC(void) PyMutex_Unlock(PyMutex *m);
+
+// Locks the mutex.
+//
+// If the mutex is currently locked, the calling thread will be parked until
+// the mutex is unlocked. If the current thread holds the GIL, then the GIL
+// will be released while the thread is parked.
+static inline void
+_PyMutex_Lock(PyMutex *m)
+{
+    uint8_t expected = _Py_UNLOCKED;
+    if (!_Py_atomic_compare_exchange_uint8(&m->_bits, &expected, _Py_LOCKED)) {
+        PyMutex_Lock(m);
+    }
+}
+#define PyMutex_Lock _PyMutex_Lock
+
+// Unlocks the mutex.
+static inline void
+_PyMutex_Unlock(PyMutex *m)
+{
+    uint8_t expected = _Py_LOCKED;
+    if (!_Py_atomic_compare_exchange_uint8(&m->_bits, &expected, _Py_UNLOCKED)) {
+        PyMutex_Unlock(m);
+    }
+}
+#define PyMutex_Unlock _PyMutex_Unlock
diff --git a/Include/cpython/longobject.h b/Include/cpython/longobject.h
index 189229ee1035d8..0d49242ff6808c 100644
--- a/Include/cpython/longobject.h
+++ b/Include/cpython/longobject.h
@@ -10,6 +10,7 @@ PyAPI_FUNC(PyObject*) PyLong_FromUnicodeObject(PyObject *u, int base);
 #define Py_ASNATIVEBYTES_NATIVE_ENDIAN 3
 #define Py_ASNATIVEBYTES_UNSIGNED_BUFFER 4
 #define Py_ASNATIVEBYTES_REJECT_NEGATIVE 8
+#define Py_ASNATIVEBYTES_ALLOW_INDEX 16
 
 /* PyLong_AsNativeBytes: Copy the integer value to a native variable.
    buffer points to the first byte of the variable.
@@ -20,8 +21,10 @@ PyAPI_FUNC(PyObject*) PyLong_FromUnicodeObject(PyObject *u, int base);
    * 2 - native endian
    * 4 - unsigned destination (e.g. don't reject copying 255 into one byte)
    * 8 - raise an exception for negative inputs
-   If flags is -1 (all bits set), native endian is used and value truncation
-   behaves most like C (allows negative inputs and allow MSB set).
+   * 16 - call __index__ on non-int types
+   If flags is -1 (all bits set), native endian is used, value truncation
+   behaves most like C (allows negative inputs and allow MSB set), and non-int
+   objects will raise a TypeError.
    Big endian mode will write the most significant byte into the address
    directly referenced by buffer; little endian will write the least significant
    byte into that address.
@@ -60,6 +63,15 @@ PyAPI_FUNC(Py_ssize_t) PyUnstable_Long_CompactValue(const PyLongObject* op);
 // There are no error cases.
 PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
 
+/* _PyLong_NumBits.  Return the number of bits needed to represent the
+   absolute value of a long.  For example, this returns 1 for 1 and -1, 2
+   for 2 and -2, and 2 for 3 and -3.  It returns 0 for 0.
+   v must not be NULL, and must be a normalized long.
+   (size_t)-1 is returned and OverflowError set if the true result doesn't
+   fit in a size_t.
+*/
+PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
+
 /* _PyLong_FromByteArray:  View the n unsigned bytes as a binary integer in
    base 256, and return a Python int with the same numeric value.
    If n is 0, the integer is 0.  Else:
diff --git a/Include/cpython/modsupport.h b/Include/cpython/modsupport.h
new file mode 100644
index 00000000000000..d3b88f58c82ca3
--- /dev/null
+++ b/Include/cpython/modsupport.h
@@ -0,0 +1,26 @@
+#ifndef Py_CPYTHON_MODSUPPORT_H
+#  error "this header file must not be included directly"
+#endif
+
+// A data structure that can be used to run initialization code once in a
+// thread-safe manner. The C++11 equivalent is std::call_once.
+typedef struct {
+    uint8_t v;
+} _PyOnceFlag;
+
+typedef struct _PyArg_Parser {
+    const char *format;
+    const char * const *keywords;
+    const char *fname;
+    const char *custom_msg;
+    _PyOnceFlag once;       /* atomic one-time initialization flag */
+    int is_kwtuple_owned;   /* does this parser own the kwtuple object? */
+    int pos;                /* number of positional-only arguments */
+    int min;                /* minimal number of arguments */
+    int max;                /* maximal number of positional arguments */
+    PyObject *kwtuple;      /* tuple of keyword parameter names */
+    struct _PyArg_Parser *next;
+} _PyArg_Parser;
+
+PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
+                                                 struct _PyArg_Parser *, ...);
diff --git a/Include/cpython/monitoring.h b/Include/cpython/monitoring.h
index efb9ec0e587552..797ba51246b1c6 100644
--- a/Include/cpython/monitoring.h
+++ b/Include/cpython/monitoring.h
@@ -101,7 +101,7 @@ PyAPI_FUNC(int)
 _PyMonitoring_FirePyUnwindEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset);
 
 PyAPI_FUNC(int)
-_PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset);
+_PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset, PyObject *value);
 
 
 #define _PYMONITORING_IF_ACTIVE(STATE, X)  \
@@ -240,11 +240,11 @@ PyMonitoring_FirePyUnwindEvent(PyMonitoringState *state, PyObject *codelike, int
 }
 
 static inline int
-PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset)
+PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset, PyObject *value)
 {
     _PYMONITORING_IF_ACTIVE(
         state,
-        _PyMonitoring_FireStopIterationEvent(state, codelike, offset));
+        _PyMonitoring_FireStopIterationEvent(state, codelike, offset, value));
 }
 
 #undef _PYMONITORING_IF_ACTIVE
diff --git a/Include/cpython/object.h b/Include/cpython/object.h
index e624326693d8e7..6cb2c40fe2eb71 100644
--- a/Include/cpython/object.h
+++ b/Include/cpython/object.h
@@ -288,6 +288,8 @@ PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
 PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *);
 PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *);
 
+PyAPI_FUNC(void) PyUnstable_Object_ClearWeakRefsNoCallbacks(PyObject *);
+
 /* Same as PyObject_Generic{Get,Set}Attr, but passing the attributes
    dict as the last parameter. */
 PyAPI_FUNC(PyObject *)
diff --git a/Include/cpython/optimizer.h b/Include/cpython/optimizer.h
deleted file mode 100644
index 5f218d75b346a0..00000000000000
--- a/Include/cpython/optimizer.h
+++ /dev/null
@@ -1,164 +0,0 @@
-
-#ifndef Py_LIMITED_API
-#ifndef Py_OPTIMIZER_H
-#define Py_OPTIMIZER_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct _PyExecutorLinkListNode {
-    struct _PyExecutorObject *next;
-    struct _PyExecutorObject *previous;
-} _PyExecutorLinkListNode;
-
-
-/* Bloom filter with m = 256
- * https://en.wikipedia.org/wiki/Bloom_filter */
-#define BLOOM_FILTER_WORDS 8
-
-typedef struct _bloom_filter {
-    uint32_t bits[BLOOM_FILTER_WORDS];
-} _PyBloomFilter;
-
-typedef struct {
-    uint8_t opcode;
-    uint8_t oparg;
-    uint8_t valid;
-    uint8_t linked;
-    int index;           // Index of ENTER_EXECUTOR (if code isn't NULL, below).
-    _PyBloomFilter bloom;
-    _PyExecutorLinkListNode links;
-    PyCodeObject *code;  // Weak (NULL if no corresponding ENTER_EXECUTOR).
-} _PyVMData;
-
-#define UOP_FORMAT_TARGET 0
-#define UOP_FORMAT_EXIT 1
-#define UOP_FORMAT_JUMP 2
-#define UOP_FORMAT_UNUSED 3
-
-/* Depending on the format,
- * the 32 bits between the oparg and operand are:
- * UOP_FORMAT_TARGET:
- *    uint32_t target;
- * UOP_FORMAT_EXIT
- *    uint16_t exit_index;
- *    uint16_t error_target;
- * UOP_FORMAT_JUMP
- *    uint16_t jump_target;
- *    uint16_t error_target;
- */
-typedef struct {
-    uint16_t opcode:14;
-    uint16_t format:2;
-    uint16_t oparg;
-    union {
-        uint32_t target;
-        struct {
-            union {
-                uint16_t exit_index;
-                uint16_t jump_target;
-            };
-            uint16_t error_target;
-        };
-    };
-    uint64_t operand;  // A cache entry
-} _PyUOpInstruction;
-
-static inline uint32_t uop_get_target(const _PyUOpInstruction *inst)
-{
-    assert(inst->format == UOP_FORMAT_TARGET);
-    return inst->target;
-}
-
-static inline uint16_t uop_get_exit_index(const _PyUOpInstruction *inst)
-{
-    assert(inst->format == UOP_FORMAT_EXIT);
-    return inst->exit_index;
-}
-
-static inline uint16_t uop_get_jump_target(const _PyUOpInstruction *inst)
-{
-    assert(inst->format == UOP_FORMAT_JUMP);
-    return inst->jump_target;
-}
-
-static inline uint16_t uop_get_error_target(const _PyUOpInstruction *inst)
-{
-    assert(inst->format != UOP_FORMAT_TARGET);
-    return inst->error_target;
-}
-
-typedef struct _exit_data {
-    uint32_t target;
-    _Py_BackoffCounter temperature;
-    const struct _PyExecutorObject *executor;
-} _PyExitData;
-
-typedef struct _PyExecutorObject {
-    PyObject_VAR_HEAD
-    const _PyUOpInstruction *trace;
-    _PyVMData vm_data; /* Used by the VM, but opaque to the optimizer */
-    uint32_t exit_count;
-    uint32_t code_size;
-    size_t jit_size;
-    void *jit_code;
-    void *jit_side_entry;
-    _PyExitData exits[1];
-} _PyExecutorObject;
-
-typedef struct _PyOptimizerObject _PyOptimizerObject;
-
-/* Should return > 0 if a new executor is created. O if no executor is produced and < 0 if an error occurred. */
-typedef int (*optimize_func)(
-    _PyOptimizerObject* self, struct _PyInterpreterFrame *frame,
-    _Py_CODEUNIT *instr, _PyExecutorObject **exec_ptr,
-    int curr_stackentries);
-
-struct _PyOptimizerObject {
-    PyObject_HEAD
-    optimize_func optimize;
-    /* Data needed by the optimizer goes here, but is opaque to the VM */
-};
-
-/** Test support **/
-typedef struct {
-    _PyOptimizerObject base;
-    int64_t count;
-} _PyCounterOptimizerObject;
-
-PyAPI_FUNC(int) PyUnstable_Replace_Executor(PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject *executor);
-
-_PyOptimizerObject *_Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject* optimizer);
-
-PyAPI_FUNC(int) PyUnstable_SetOptimizer(_PyOptimizerObject* optimizer);
-
-PyAPI_FUNC(_PyOptimizerObject *) PyUnstable_GetOptimizer(void);
-
-PyAPI_FUNC(_PyExecutorObject *) PyUnstable_GetExecutor(PyCodeObject *code, int offset);
-
-void _Py_ExecutorInit(_PyExecutorObject *, const _PyBloomFilter *);
-void _Py_ExecutorDetach(_PyExecutorObject *);
-void _Py_BloomFilter_Init(_PyBloomFilter *);
-void _Py_BloomFilter_Add(_PyBloomFilter *bloom, void *obj);
-PyAPI_FUNC(void) _Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj);
-/* For testing */
-PyAPI_FUNC(PyObject *)PyUnstable_Optimizer_NewCounter(void);
-PyAPI_FUNC(PyObject *)PyUnstable_Optimizer_NewUOpOptimizer(void);
-
-#define _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS 3
-#define _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS 6
-
-#ifdef _Py_TIER2
-PyAPI_FUNC(void) _Py_Executors_InvalidateDependency(PyInterpreterState *interp, void *obj, int is_invalidation);
-PyAPI_FUNC(void) _Py_Executors_InvalidateAll(PyInterpreterState *interp, int is_invalidation);
-#else
-#  define _Py_Executors_InvalidateDependency(A, B, C) ((void)0)
-#  define _Py_Executors_InvalidateAll(A, B) ((void)0)
-#endif
-
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* !Py_OPTIMIZER_H */
-#endif /* Py_LIMITED_API */
diff --git a/Include/cpython/pyatomic.h b/Include/cpython/pyatomic.h
index 55a139bb9158db..4ecef4f56edf42 100644
--- a/Include/cpython/pyatomic.h
+++ b/Include/cpython/pyatomic.h
@@ -510,6 +510,9 @@ _Py_atomic_load_ssize_acquire(const Py_ssize_t *obj);
 // See https://en.cppreference.com/w/cpp/atomic/atomic_thread_fence
 static inline void _Py_atomic_fence_seq_cst(void);
 
+// Acquire fence
+static inline void _Py_atomic_fence_acquire(void);
+
 // Release fence
 static inline void _Py_atomic_fence_release(void);
 
diff --git a/Include/cpython/pyatomic_gcc.h b/Include/cpython/pyatomic_gcc.h
index c0f3747be45758..ef09954d53ac1d 100644
--- a/Include/cpython/pyatomic_gcc.h
+++ b/Include/cpython/pyatomic_gcc.h
@@ -297,7 +297,7 @@ _Py_atomic_load_ssize(const Py_ssize_t *obj)
 
 static inline void *
 _Py_atomic_load_ptr(const void *obj)
-{ return (void *)__atomic_load_n((void **)obj, __ATOMIC_SEQ_CST); }
+{ return (void *)__atomic_load_n((void * const *)obj, __ATOMIC_SEQ_CST); }
 
 
 // --- _Py_atomic_load_relaxed -----------------------------------------------
@@ -356,7 +356,7 @@ _Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj)
 
 static inline void *
 _Py_atomic_load_ptr_relaxed(const void *obj)
-{ return (void *)__atomic_load_n((const void **)obj, __ATOMIC_RELAXED); }
+{ return (void *)__atomic_load_n((void * const *)obj, __ATOMIC_RELAXED); }
 
 static inline unsigned long long
 _Py_atomic_load_ullong_relaxed(const unsigned long long *obj)
@@ -490,11 +490,11 @@ _Py_atomic_store_ullong_relaxed(unsigned long long *obj,
 
 static inline void *
 _Py_atomic_load_ptr_acquire(const void *obj)
-{ return (void *)__atomic_load_n((void **)obj, __ATOMIC_ACQUIRE); }
+{ return (void *)__atomic_load_n((void * const *)obj, __ATOMIC_ACQUIRE); }
 
 static inline uintptr_t
 _Py_atomic_load_uintptr_acquire(const uintptr_t *obj)
-{ return (uintptr_t)__atomic_load_n((uintptr_t *)obj, __ATOMIC_ACQUIRE); }
+{ return (uintptr_t)__atomic_load_n(obj, __ATOMIC_ACQUIRE); }
 
 static inline void
 _Py_atomic_store_ptr_release(void *obj, void *value)
@@ -542,6 +542,10 @@ static inline void
 _Py_atomic_fence_seq_cst(void)
 { __atomic_thread_fence(__ATOMIC_SEQ_CST); }
 
+ static inline void
+_Py_atomic_fence_acquire(void)
+{ __atomic_thread_fence(__ATOMIC_ACQUIRE); }
+
  static inline void
 _Py_atomic_fence_release(void)
 { __atomic_thread_fence(__ATOMIC_RELEASE); }
diff --git a/Include/cpython/pyatomic_msc.h b/Include/cpython/pyatomic_msc.h
index f32995c1f578ac..84da21bdcbff4f 100644
--- a/Include/cpython/pyatomic_msc.h
+++ b/Include/cpython/pyatomic_msc.h
@@ -1066,6 +1066,18 @@ _Py_atomic_fence_seq_cst(void)
 #else
 #  error "no implementation of _Py_atomic_fence_seq_cst"
 #endif
+}
+
+ static inline void
+_Py_atomic_fence_acquire(void)
+{
+#if defined(_M_ARM64)
+    __dmb(_ARM64_BARRIER_ISHLD);
+#elif defined(_M_X64) || defined(_M_IX86)
+    _ReadBarrier();
+#else
+#  error "no implementation of _Py_atomic_fence_acquire"
+#endif
 }
 
  static inline void
diff --git a/Include/cpython/pyatomic_std.h b/Include/cpython/pyatomic_std.h
index 0cdce4e6dd39f0..7c71e94c68f8e6 100644
--- a/Include/cpython/pyatomic_std.h
+++ b/Include/cpython/pyatomic_std.h
@@ -961,6 +961,13 @@ _Py_atomic_fence_seq_cst(void)
     atomic_thread_fence(memory_order_seq_cst);
 }
 
+ static inline void
+_Py_atomic_fence_acquire(void)
+{
+    _Py_USING_STD;
+    atomic_thread_fence(memory_order_acquire);
+}
+
  static inline void
 _Py_atomic_fence_release(void)
 {
diff --git a/Include/cpython/pyerrors.h b/Include/cpython/pyerrors.h
index 42b4b03b10ca20..b36b4681f5dddb 100644
--- a/Include/cpython/pyerrors.h
+++ b/Include/cpython/pyerrors.h
@@ -100,7 +100,7 @@ PyAPI_FUNC(PyObject*) PyUnstable_Exc_PrepReraiseStar(
 
 /* In signalmodule.c */
 
-int PySignal_SetWakeupFd(int fd);
+PyAPI_FUNC(int) PySignal_SetWakeupFd(int fd);
 
 /* Support for adding program text to SyntaxErrors */
 
diff --git a/Include/cpython/pyhash.h b/Include/cpython/pyhash.h
index 2f8e12c1423aa1..825c034a8d8474 100644
--- a/Include/cpython/pyhash.h
+++ b/Include/cpython/pyhash.h
@@ -3,7 +3,7 @@
 #endif
 
 /* Prime multiplier used in string and various other hashes. */
-#define _PyHASH_MULTIPLIER 1000003UL  /* 0xf4243 */
+#define PyHASH_MULTIPLIER 1000003UL  /* 0xf4243 */
 
 /* Parameters used for the numeric hash implementation.  See notes for
    _Py_HashDouble in Python/pyhash.c.  Numeric hashes are based on
@@ -17,9 +17,10 @@
 
 #define PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1)
 #define PyHASH_INF 314159
-#define PyHASH_IMAG _PyHASH_MULTIPLIER
+#define PyHASH_IMAG PyHASH_MULTIPLIER
 
 /* Aliases kept for backward compatibility with Python 3.12 */
+#define _PyHASH_MULTIPLIER PyHASH_MULTIPLIER
 #define _PyHASH_BITS PyHASH_BITS
 #define _PyHASH_MODULUS PyHASH_MODULUS
 #define _PyHASH_INF PyHASH_INF
diff --git a/Include/cpython/pystate.h b/Include/cpython/pystate.h
index 2df9ecd6d52084..f005729fff11b6 100644
--- a/Include/cpython/pystate.h
+++ b/Include/cpython/pystate.h
@@ -83,6 +83,8 @@ struct _ts {
         unsigned int bound_gilstate:1;
         /* Currently in use (maybe holds the GIL). */
         unsigned int active:1;
+        /* Currently holds the GIL. */
+        unsigned int holds_gil:1;
 
         /* various stages of finalization */
         unsigned int finalizing:1;
@@ -90,15 +92,16 @@ struct _ts {
         unsigned int finalized:1;
 
         /* padding to align to 4 bytes */
-        unsigned int :24;
+        unsigned int :23;
     } _status;
 #ifdef Py_BUILD_CORE
 #  define _PyThreadState_WHENCE_NOTSET -1
 #  define _PyThreadState_WHENCE_UNKNOWN 0
-#  define _PyThreadState_WHENCE_INTERP 1
-#  define _PyThreadState_WHENCE_THREADING 2
-#  define _PyThreadState_WHENCE_GILSTATE 3
-#  define _PyThreadState_WHENCE_EXEC 4
+#  define _PyThreadState_WHENCE_INIT 1
+#  define _PyThreadState_WHENCE_FINI 2
+#  define _PyThreadState_WHENCE_THREADING 3
+#  define _PyThreadState_WHENCE_GILSTATE 4
+#  define _PyThreadState_WHENCE_EXEC 5
 #endif
     int _whence;
 
@@ -189,6 +192,14 @@ struct _ts {
     PyObject *previous_executor;
 
     uint64_t dict_global_version;
+
+    /* Used to store/retrieve `threading.local` keys/values for this thread */
+    PyObject *threading_local_key;
+
+    /* Used by `threading.local`s to be remove keys/values for dying threads.
+       The PyThreadObject must hold the only reference to this value.
+    */
+    PyObject *threading_local_sentinel;
 };
 
 #ifdef Py_DEBUG
diff --git a/Include/cpython/pystats.h b/Include/cpython/pystats.h
index 38480a4f6cd78f..378c2760ec3f55 100644
--- a/Include/cpython/pystats.h
+++ b/Include/cpython/pystats.h
@@ -18,13 +18,19 @@
 //
 // Define _PY_INTERPRETER macro to increment interpreter_increfs and
 // interpreter_decrefs. Otherwise, increment increfs and decrefs.
-
-#include "pycore_uop_ids.h"
+//
+// The number of incref operations counted by `incref` and
+// `interpreter_incref` is the number of increment operations, which is
+// not equal to the total of all reference counts. A single increment
+// operation may increase the reference count of an object by more than
+// one. For example, see `_Py_RefcntAdd`.
 
 #ifndef Py_CPYTHON_PYSTATS_H
 #  error "this header file must not be included directly"
 #endif
 
+#define PYSTATS_MAX_UOP_ID 512
+
 #define SPECIALIZATION_FAILURE_KINDS 36
 
 /* Stats for determining who is calling PyEval_EvalFrame */
@@ -100,7 +106,7 @@ typedef struct _gc_stats {
 typedef struct _uop_stats {
     uint64_t execution_count;
     uint64_t miss;
-    uint64_t pair_count[MAX_UOP_ID + 1];
+    uint64_t pair_count[PYSTATS_MAX_UOP_ID + 1];
 } UOpStats;
 
 #define _Py_UOP_HIST_SIZE 32
@@ -118,7 +124,7 @@ typedef struct _optimization_stats {
     uint64_t recursive_call;
     uint64_t low_confidence;
     uint64_t executors_invalidated;
-    UOpStats opcode[MAX_UOP_ID+1];
+    UOpStats opcode[PYSTATS_MAX_UOP_ID + 1];
     uint64_t unsupported_opcode[256];
     uint64_t trace_length_hist[_Py_UOP_HIST_SIZE];
     uint64_t trace_run_length_hist[_Py_UOP_HIST_SIZE];
@@ -128,7 +134,7 @@ typedef struct _optimization_stats {
     uint64_t optimizer_failure_reason_no_memory;
     uint64_t remove_globals_builtins_changed;
     uint64_t remove_globals_incorrect_keys;
-    uint64_t error_in_opcode[MAX_UOP_ID+1];
+    uint64_t error_in_opcode[PYSTATS_MAX_UOP_ID + 1];
 } OptimizationStats;
 
 typedef struct _rare_event_stats {
diff --git a/Include/cpython/tracemalloc.h b/Include/cpython/tracemalloc.h
index 61a16ea9a9f3eb..6d094291ae2e90 100644
--- a/Include/cpython/tracemalloc.h
+++ b/Include/cpython/tracemalloc.h
@@ -1,6 +1,9 @@
 #ifndef Py_LIMITED_API
 #ifndef Py_TRACEMALLOC_H
 #define Py_TRACEMALLOC_H
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /* Track an allocated memory block in the tracemalloc module.
    Return 0 on success, return -1 on error (failed to allocate memory to store
@@ -22,5 +25,8 @@ PyAPI_FUNC(int) PyTraceMalloc_Untrack(
     unsigned int domain,
     uintptr_t ptr);
 
+#ifdef __cplusplus
+}
+#endif
 #endif  // !Py_TRACEMALLOC_H
 #endif  // !Py_LIMITED_API
diff --git a/Include/cpython/weakrefobject.h b/Include/cpython/weakrefobject.h
index 9a796098c6b48f..28acf7265a0856 100644
--- a/Include/cpython/weakrefobject.h
+++ b/Include/cpython/weakrefobject.h
@@ -36,10 +36,12 @@ struct _PyWeakReference {
      * Normally this can be derived from wr_object, but in some cases we need
      * to lock after wr_object has been set to Py_None.
      */
-    struct _PyMutex *weakrefs_lock;
+    PyMutex *weakrefs_lock;
 #endif
 };
 
+PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);
+
 Py_DEPRECATED(3.13) static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj)
 {
     PyWeakReference *ref;
diff --git a/Include/critical_section.h b/Include/critical_section.h
new file mode 100644
index 00000000000000..3b37615a8b17e2
--- /dev/null
+++ b/Include/critical_section.h
@@ -0,0 +1,16 @@
+#ifndef Py_CRITICAL_SECTION_H
+#define Py_CRITICAL_SECTION_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_CRITICAL_SECTION_H
+#  include "cpython/critical_section.h"
+#  undef Py_CPYTHON_CRITICAL_SECTION_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CRITICAL_SECTION_H */
diff --git a/Include/floatobject.h b/Include/floatobject.h
index 999441ac536e1d..8963c16832a4bc 100644
--- a/Include/floatobject.h
+++ b/Include/floatobject.h
@@ -2,7 +2,7 @@
 /* Float object interface */
 
 /*
-PyFloatObject represents a (double precision) floating point number.
+PyFloatObject represents a (double precision) floating-point number.
 */
 
 #ifndef Py_FLOATOBJECT_H
diff --git a/Include/internal/mimalloc/mimalloc/atomic.h b/Include/internal/mimalloc/mimalloc/atomic.h
index eb8478ceed6adf..1093c540864bc1 100644
--- a/Include/internal/mimalloc/mimalloc/atomic.h
+++ b/Include/internal/mimalloc/mimalloc/atomic.h
@@ -23,7 +23,9 @@ terms of the MIT license. A copy of the license can be found in the file
 #define  _Atomic(tp)            std::atomic<tp>
 #define  mi_atomic(name)        std::atomic_##name
 #define  mi_memory_order(name)  std::memory_order_##name
-#if !defined(ATOMIC_VAR_INIT) || (__cplusplus >= 202002L) // c++20, see issue #571
+#if (__cplusplus >= 202002L)    // c++20, see issue #571
+ #define MI_ATOMIC_VAR_INIT(x)  x
+#elif !defined(ATOMIC_VAR_INIT)
  #define MI_ATOMIC_VAR_INIT(x)  x
 #else
  #define MI_ATOMIC_VAR_INIT(x)  ATOMIC_VAR_INIT(x)
@@ -39,7 +41,9 @@ terms of the MIT license. A copy of the license can be found in the file
 #include <stdatomic.h>
 #define  mi_atomic(name)        atomic_##name
 #define  mi_memory_order(name)  memory_order_##name
-#if !defined(ATOMIC_VAR_INIT) || (__STDC_VERSION__ >= 201710L) // c17, see issue #735
+#if (__STDC_VERSION__ >= 201710L) // c17, see issue #735
+ #define MI_ATOMIC_VAR_INIT(x) x
+#elif !defined(ATOMIC_VAR_INIT)
  #define MI_ATOMIC_VAR_INIT(x) x
 #else
  #define MI_ATOMIC_VAR_INIT(x) ATOMIC_VAR_INIT(x)
diff --git a/Include/internal/mimalloc/mimalloc/internal.h b/Include/internal/mimalloc/mimalloc/internal.h
index 8af841cfdffc01..94f88fb603af25 100644
--- a/Include/internal/mimalloc/mimalloc/internal.h
+++ b/Include/internal/mimalloc/mimalloc/internal.h
@@ -14,8 +14,8 @@ terms of the MIT license. A copy of the license can be found in the file
 // functions and macros.
 // --------------------------------------------------------------------------
 
-#include "mimalloc/types.h"
-#include "mimalloc/track.h"
+#include "types.h"
+#include "track.h"
 
 #if (MI_DEBUG>0)
 #define mi_trace_message(...)  _mi_trace_message(__VA_ARGS__)
diff --git a/Include/internal/mimalloc/mimalloc/prim.h b/Include/internal/mimalloc/mimalloc/prim.h
index 8a60d528458e6c..322ab29e6b41c2 100644
--- a/Include/internal/mimalloc/mimalloc/prim.h
+++ b/Include/internal/mimalloc/mimalloc/prim.h
@@ -151,9 +151,9 @@ static inline mi_threadid_t _mi_prim_thread_id(void) mi_attr_noexcept {
 // If you test on another platform and it works please send a PR :-)
 // see also https://akkadia.org/drepper/tls.pdf for more info on the TLS register.
 #elif defined(__GNUC__) && ( \
-           (defined(__GLIBC__)   && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
+           (defined(__GLIBC__)   && (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) && __ARM_ARCH >= 7) || defined(__aarch64__))) \
         || (defined(__APPLE__)   && (defined(__x86_64__) || defined(__aarch64__))) \
-        || (defined(__BIONIC__)  && (defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))) \
+        || (defined(__BIONIC__)  && (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) && __ARM_ARCH >= 7) || defined(__aarch64__))) \
         || (defined(__FreeBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
         || (defined(__OpenBSD__) && (defined(__x86_64__) || defined(__i386__) || defined(__aarch64__))) \
       )
diff --git a/Include/internal/mimalloc/mimalloc/types.h b/Include/internal/mimalloc/mimalloc/types.h
index 17e440848ecae5..354839ba955b36 100644
--- a/Include/internal/mimalloc/mimalloc/types.h
+++ b/Include/internal/mimalloc/mimalloc/types.h
@@ -21,7 +21,7 @@ terms of the MIT license. A copy of the license can be found in the file
 
 #include <stddef.h>   // ptrdiff_t
 #include <stdint.h>   // uintptr_t, uint16_t, etc
-#include "mimalloc/atomic.h"  // _Atomic
+#include "atomic.h"   // _Atomic
 
 #ifdef _MSC_VER
 #pragma warning(disable:4214) // bitfield is not int
diff --git a/Include/internal/pycore_atexit.h b/Include/internal/pycore_atexit.h
index 507a5c03cbc792..72c66a05939500 100644
--- a/Include/internal/pycore_atexit.h
+++ b/Include/internal/pycore_atexit.h
@@ -44,6 +44,7 @@ typedef struct {
 
 struct atexit_state {
     atexit_callback *ll_callbacks;
+    // Kept for ABI compatibility--do not use! (See GH-127791.)
     atexit_callback *last_ll_callback;
 
     // XXX The rest of the state could be moved to the atexit module state
diff --git a/Include/internal/pycore_backoff.h b/Include/internal/pycore_backoff.h
index 90735b202c7a93..0bcca1e769b341 100644
--- a/Include/internal/pycore_backoff.h
+++ b/Include/internal/pycore_backoff.h
@@ -13,6 +13,18 @@ extern "C" {
 #include <stdbool.h>
 #include <stdint.h>
 
+
+typedef struct {
+    union {
+        struct {
+            uint16_t backoff : 4;
+            uint16_t value : 12;
+        };
+        uint16_t as_counter;  // For printf("%#x", ...)
+    };
+} _Py_BackoffCounter;
+
+
 /* 16-bit countdown counters using exponential backoff.
 
    These are used by the adaptive specializer to count down until
diff --git a/Include/internal/pycore_bytesobject.h b/Include/internal/pycore_bytesobject.h
index 94d421a9eb742a..300e7f4896a39e 100644
--- a/Include/internal/pycore_bytesobject.h
+++ b/Include/internal/pycore_bytesobject.h
@@ -23,10 +23,6 @@ extern PyObject* _PyBytes_FromHex(
 PyAPI_FUNC(PyObject*) _PyBytes_DecodeEscape(const char *, Py_ssize_t,
                                             const char *, const char **);
 
-/* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
-   x must be an iterable object. */
-extern PyObject* _PyBytes_Join(PyObject *sep, PyObject *x);
-
 
 // Substring Search.
 //
diff --git a/Include/internal/pycore_ceval.h b/Include/internal/pycore_ceval.h
index 48ad0678995904..043f5957d481e5 100644
--- a/Include/internal/pycore_ceval.h
+++ b/Include/internal/pycore_ceval.h
@@ -131,11 +131,10 @@ extern int _PyEval_ThreadsInitialized(void);
 extern void _PyEval_InitGIL(PyThreadState *tstate, int own_gil);
 extern void _PyEval_FiniGIL(PyInterpreterState *interp);
 
-// Acquire the GIL and return 1. In free-threaded builds, this function may
-// return 0 to indicate that the GIL was disabled and therefore not acquired.
-extern int _PyEval_AcquireLock(PyThreadState *tstate);
+extern void _PyEval_AcquireLock(PyThreadState *tstate);
 
-extern void _PyEval_ReleaseLock(PyInterpreterState *, PyThreadState *);
+extern void _PyEval_ReleaseLock(PyInterpreterState *, PyThreadState *,
+                                int final_release);
 
 #ifdef Py_GIL_DISABLED
 // Returns 0 or 1 if the GIL for the given thread's interpreter is disabled or
@@ -146,7 +145,8 @@ extern void _PyEval_ReleaseLock(PyInterpreterState *, PyThreadState *);
 static inline int
 _PyEval_IsGILEnabled(PyThreadState *tstate)
 {
-    return tstate->interp->ceval.gil->enabled != 0;
+    struct _gil_runtime_state *gil = tstate->interp->ceval.gil;
+    return _Py_atomic_load_int_relaxed(&gil->enabled) != 0;
 }
 
 // Enable or disable the GIL used by the interpreter that owns tstate, which
@@ -255,6 +255,7 @@ PyAPI_FUNC(void) _PyEval_FormatKwargsError(PyThreadState *tstate, PyObject *func
 PyAPI_FUNC(PyObject *)_PyEval_MatchClass(PyThreadState *tstate, PyObject *subject, PyObject *type, Py_ssize_t nargs, PyObject *kwargs);
 PyAPI_FUNC(PyObject *)_PyEval_MatchKeys(PyThreadState *tstate, PyObject *map, PyObject *keys);
 PyAPI_FUNC(int) _PyEval_UnpackIterable(PyThreadState *tstate, PyObject *v, int argcnt, int argcntafter, PyObject **sp);
+PyAPI_FUNC(void) _PyEval_MonitorRaise(PyThreadState *tstate, _PyInterpreterFrame *frame, _Py_CODEUNIT *instr);
 PyAPI_FUNC(void) _PyEval_FrameClearAndPop(PyThreadState *tstate, _PyInterpreterFrame *frame);
 
 
diff --git a/Include/internal/pycore_code.h b/Include/internal/pycore_code.h
index bcbaf60f226c77..1fb8cc473c6e98 100644
--- a/Include/internal/pycore_code.h
+++ b/Include/internal/pycore_code.h
@@ -9,6 +9,53 @@ extern "C" {
 #endif
 
 #include "pycore_lock.h"        // PyMutex
+#include "pycore_backoff.h"     // _Py_BackoffCounter
+
+
+/* Each instruction in a code object is a fixed-width value,
+ * currently 2 bytes: 1-byte opcode + 1-byte oparg.  The EXTENDED_ARG
+ * opcode allows for larger values but the current limit is 3 uses
+ * of EXTENDED_ARG (see Python/compile.c), for a maximum
+ * 32-bit value.  This aligns with the note in Python/compile.c
+ * (compiler_addop_i_line) indicating that the max oparg value is
+ * 2**32 - 1, rather than INT_MAX.
+ */
+
+typedef union {
+    uint16_t cache;
+    struct {
+        uint8_t code;
+        uint8_t arg;
+    } op;
+    _Py_BackoffCounter counter;  // First cache entry of specializable op
+} _Py_CODEUNIT;
+
+#define _PyCode_CODE(CO) _Py_RVALUE((_Py_CODEUNIT *)(CO)->co_code_adaptive)
+#define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT))
+
+
+/* These macros only remain defined for compatibility. */
+#define _Py_OPCODE(word) ((word).op.code)
+#define _Py_OPARG(word) ((word).op.arg)
+
+static inline _Py_CODEUNIT
+_py_make_codeunit(uint8_t opcode, uint8_t oparg)
+{
+    // No designated initialisers because of C++ compat
+    _Py_CODEUNIT word;
+    word.op.code = opcode;
+    word.op.arg = oparg;
+    return word;
+}
+
+static inline void
+_py_set_opcode(_Py_CODEUNIT *word, uint8_t opcode)
+{
+    word->op.code = opcode;
+}
+
+#define _Py_MAKE_CODEUNIT(opcode, oparg) _py_make_codeunit((opcode), (oparg))
+#define _Py_SET_OPCODE(word, opcode) _py_set_opcode(&(word), (opcode))
 
 
 // We hide some of the newer PyCodeObject fields behind macros.
@@ -490,8 +537,9 @@ write_location_entry_start(uint8_t *ptr, int code, int length)
 #define ADAPTIVE_COOLDOWN_BACKOFF 0
 
 // Can't assert this in pycore_backoff.h because of header order dependencies
-static_assert(COLD_EXIT_INITIAL_VALUE > ADAPTIVE_COOLDOWN_VALUE,
-    "Cold exit value should be larger than adaptive cooldown value");
+#if COLD_EXIT_INITIAL_VALUE <= ADAPTIVE_COOLDOWN_VALUE
+#  error  "Cold exit value should be larger than adaptive cooldown value"
+#endif
 
 static inline _Py_BackoffCounter
 adaptive_counter_bits(uint16_t value, uint16_t backoff) {
diff --git a/Include/internal/pycore_context.h b/Include/internal/pycore_context.h
index ae5c47f195eb7f..10c1f1e52be040 100644
--- a/Include/internal/pycore_context.h
+++ b/Include/internal/pycore_context.h
@@ -35,9 +35,11 @@ struct _pycontextvarobject {
     PyObject_HEAD
     PyObject *var_name;
     PyObject *var_default;
+#ifndef Py_GIL_DISABLED
     PyObject *var_cached;
     uint64_t var_cached_tsid;
     uint64_t var_cached_tsver;
+#endif
     Py_hash_t var_hash;
 };
 
diff --git a/Include/internal/pycore_critical_section.h b/Include/internal/pycore_critical_section.h
index 23b85c2f9e9bb2..78cd0d54972660 100644
--- a/Include/internal/pycore_critical_section.h
+++ b/Include/internal/pycore_critical_section.h
@@ -13,75 +13,9 @@
 extern "C" {
 #endif
 
-// Implementation of Python critical sections
-//
-// Conceptually, critical sections are a deadlock avoidance layer on top of
-// per-object locks. These helpers, in combination with those locks, replace
-// our usage of the global interpreter lock to provide thread-safety for
-// otherwise thread-unsafe objects, such as dict.
-//
-// NOTE: These APIs are no-ops in non-free-threaded builds.
-//
-// Straightforward per-object locking could introduce deadlocks that were not
-// present when running with the GIL. Threads may hold locks for multiple
-// objects simultaneously because Python operations can nest. If threads were
-// to acquire the same locks in different orders, they would deadlock.
-//
-// One way to avoid deadlocks is to allow threads to hold only the lock (or
-// locks) for a single operation at a time (typically a single lock, but some
-// operations involve two locks). When a thread begins a nested operation it
-// could suspend the locks for any outer operation: before beginning the nested
-// operation, the locks for the outer operation are released and when the
-// nested operation completes, the locks for the outer operation are
-// reacquired.
-//
-// To improve performance, this API uses a variation of the above scheme.
-// Instead of immediately suspending locks any time a nested operation begins,
-// locks are only suspended if the thread would block. This reduces the number
-// of lock acquisitions and releases for nested operations, while still
-// avoiding deadlocks.
-//
-// Additionally, the locks for any active operation are suspended around
-// other potentially blocking operations, such as I/O. This is because the
-// interaction between locks and blocking operations can lead to deadlocks in
-// the same way as the interaction between multiple locks.
-//
-// Each thread's critical sections and their corresponding locks are tracked in
-// a stack in `PyThreadState.critical_section`. When a thread calls
-// `_PyThreadState_Detach()`, such as before a blocking I/O operation or when
-// waiting to acquire a lock, the thread suspends all of its active critical
-// sections, temporarily releasing the associated locks. When the thread calls
-// `_PyThreadState_Attach()`, it resumes the top-most (i.e., most recent)
-// critical section by reacquiring the associated lock or locks.  See
-// `_PyCriticalSection_Resume()`.
-//
-// NOTE: Only the top-most critical section is guaranteed to be active.
-// Operations that need to lock two objects at once must use
-// `Py_BEGIN_CRITICAL_SECTION2()`. You *CANNOT* use nested critical sections
-// to lock more than one object at once, because the inner critical section
-// may  suspend the outer critical sections. This API does not provide a way
-// to lock more than two objects at once (though it could be added later
-// if actually needed).
-//
-// NOTE: Critical sections implicitly behave like reentrant locks because
-// attempting to acquire the same lock will suspend any outer (earlier)
-// critical sections. However, they are less efficient for this use case than
-// purposefully designed reentrant locks.
-//
-// Example usage:
-//  Py_BEGIN_CRITICAL_SECTION(op);
-//  ...
-//  Py_END_CRITICAL_SECTION();
-//
-// To lock two objects at once:
-//  Py_BEGIN_CRITICAL_SECTION2(op1, op2);
-//  ...
-//  Py_END_CRITICAL_SECTION2();
-
-
 // Tagged pointers to critical sections use the two least significant bits to
 // mark if the pointed-to critical section is inactive and whether it is a
-// _PyCriticalSection2 object.
+// PyCriticalSection2 object.
 #define _Py_CRITICAL_SECTION_INACTIVE       0x1
 #define _Py_CRITICAL_SECTION_TWO_MUTEXES    0x2
 #define _Py_CRITICAL_SECTION_MASK           0x3
@@ -89,38 +23,38 @@ extern "C" {
 #ifdef Py_GIL_DISABLED
 # define Py_BEGIN_CRITICAL_SECTION_MUT(mutex)                           \
     {                                                                   \
-        _PyCriticalSection _cs;                                         \
-        _PyCriticalSection_Begin(&_cs, mutex)
+        PyCriticalSection _py_cs;                                       \
+        _PyCriticalSection_BeginMutex(&_py_cs, mutex)
 
-# define Py_BEGIN_CRITICAL_SECTION(op)                                  \
-        Py_BEGIN_CRITICAL_SECTION_MUT(&_PyObject_CAST(op)->ob_mutex)
-
-# define Py_END_CRITICAL_SECTION()                                      \
-        _PyCriticalSection_End(&_cs);                                   \
-    }
-
-# define Py_XBEGIN_CRITICAL_SECTION(op)                                 \
+# define Py_BEGIN_CRITICAL_SECTION2_MUT(m1, m2)                         \
     {                                                                   \
-        _PyCriticalSection _cs_opt = {0};                               \
-        _PyCriticalSection_XBegin(&_cs_opt, _PyObject_CAST(op))
-
-# define Py_XEND_CRITICAL_SECTION()                                     \
-        _PyCriticalSection_XEnd(&_cs_opt);                              \
-    }
-
-# define Py_BEGIN_CRITICAL_SECTION2(a, b)                               \
+        PyCriticalSection2 _py_cs2;                                     \
+        _PyCriticalSection2_BeginMutex(&_py_cs2, m1, m2)
+
+// Specialized version of critical section locking to safely use
+// PySequence_Fast APIs without the GIL. For performance, the argument *to*
+// PySequence_Fast() is provided to the macro, not the *result* of
+// PySequence_Fast(), which would require an extra test to determine if the
+// lock must be acquired.
+# define Py_BEGIN_CRITICAL_SECTION_SEQUENCE_FAST(original)              \
     {                                                                   \
-        _PyCriticalSection2 _cs2;                                       \
-        _PyCriticalSection2_Begin(&_cs2, &_PyObject_CAST(a)->ob_mutex, &_PyObject_CAST(b)->ob_mutex)
+        PyObject *_orig_seq = _PyObject_CAST(original);                 \
+        const bool _should_lock_cs = PyList_CheckExact(_orig_seq);      \
+        PyCriticalSection _cs;                                          \
+        if (_should_lock_cs) {                                          \
+            _PyCriticalSection_Begin(&_cs, _orig_seq);                  \
+        }
 
-# define Py_END_CRITICAL_SECTION2()                                     \
-        _PyCriticalSection2_End(&_cs2);                                 \
+# define Py_END_CRITICAL_SECTION_SEQUENCE_FAST()                        \
+        if (_should_lock_cs) {                                          \
+            PyCriticalSection_End(&_cs);                                \
+        }                                                               \
     }
 
 // Asserts that the mutex is locked.  The mutex must be held by the
 // top-most critical section otherwise there's the possibility
 // that the mutex would be swalled out in some code paths.
-#define  _Py_CRITICAL_SECTION_ASSERT_MUTEX_LOCKED(mutex) \
+#define _Py_CRITICAL_SECTION_ASSERT_MUTEX_LOCKED(mutex) \
     _PyCriticalSection_AssertHeld(mutex)
 
 // Asserts that the mutex for the given object is locked. The mutex must
@@ -128,73 +62,57 @@ extern "C" {
 // possibility that the mutex would be swalled out in some code paths.
 #ifdef Py_DEBUG
 
-#define  _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op)                           \
+# define _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op)                           \
     if (Py_REFCNT(op) != 1) {                                                    \
         _Py_CRITICAL_SECTION_ASSERT_MUTEX_LOCKED(&_PyObject_CAST(op)->ob_mutex); \
     }
 
 #else   /* Py_DEBUG */
 
-#define  _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op)
+# define _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op)
 
 #endif  /* Py_DEBUG */
 
 #else  /* !Py_GIL_DISABLED */
 // The critical section APIs are no-ops with the GIL.
-# define Py_BEGIN_CRITICAL_SECTION_MUT(mut)
-# define Py_BEGIN_CRITICAL_SECTION(op)
-# define Py_END_CRITICAL_SECTION()
-# define Py_XBEGIN_CRITICAL_SECTION(op)
-# define Py_XEND_CRITICAL_SECTION()
-# define Py_BEGIN_CRITICAL_SECTION2(a, b)
-# define Py_END_CRITICAL_SECTION2()
+# define Py_BEGIN_CRITICAL_SECTION_MUT(mut) {
+# define Py_BEGIN_CRITICAL_SECTION2_MUT(m1, m2) {
+# define Py_BEGIN_CRITICAL_SECTION_SEQUENCE_FAST(original) {
+# define Py_END_CRITICAL_SECTION_SEQUENCE_FAST() }
 # define _Py_CRITICAL_SECTION_ASSERT_MUTEX_LOCKED(mutex)
 # define _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op)
 #endif  /* !Py_GIL_DISABLED */
 
-typedef struct {
-    // Tagged pointer to an outer active critical section (or 0).
-    // The two least-significant-bits indicate whether the pointed-to critical
-    // section is inactive and whether it is a _PyCriticalSection2 object.
-    uintptr_t prev;
-
-    // Mutex used to protect critical section
-    PyMutex *mutex;
-} _PyCriticalSection;
-
-// A critical section protected by two mutexes. Use
-// _PyCriticalSection2_Begin and _PyCriticalSection2_End.
-typedef struct {
-    _PyCriticalSection base;
-
-    PyMutex *mutex2;
-} _PyCriticalSection2;
-
-static inline int
-_PyCriticalSection_IsActive(uintptr_t tag)
-{
-    return tag != 0 && (tag & _Py_CRITICAL_SECTION_INACTIVE) == 0;
-}
-
 // Resumes the top-most critical section.
 PyAPI_FUNC(void)
 _PyCriticalSection_Resume(PyThreadState *tstate);
 
 // (private) slow path for locking the mutex
 PyAPI_FUNC(void)
-_PyCriticalSection_BeginSlow(_PyCriticalSection *c, PyMutex *m);
+_PyCriticalSection_BeginSlow(PyCriticalSection *c, PyMutex *m);
 
 PyAPI_FUNC(void)
-_PyCriticalSection2_BeginSlow(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
+_PyCriticalSection2_BeginSlow(PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
                              int is_m1_locked);
 
+PyAPI_FUNC(void)
+_PyCriticalSection_SuspendAll(PyThreadState *tstate);
+
+#ifdef Py_GIL_DISABLED
+
+static inline int
+_PyCriticalSection_IsActive(uintptr_t tag)
+{
+    return tag != 0 && (tag & _Py_CRITICAL_SECTION_INACTIVE) == 0;
+}
+
 static inline void
-_PyCriticalSection_Begin(_PyCriticalSection *c, PyMutex *m)
+_PyCriticalSection_BeginMutex(PyCriticalSection *c, PyMutex *m)
 {
-    if (PyMutex_LockFast(&m->v)) {
+    if (PyMutex_LockFast(&m->_bits)) {
         PyThreadState *tstate = _PyThreadState_GET();
-        c->mutex = m;
-        c->prev = tstate->critical_section;
+        c->_cs_mutex = m;
+        c->_cs_prev = tstate->critical_section;
         tstate->critical_section = (uintptr_t)c;
     }
     else {
@@ -203,23 +121,20 @@ _PyCriticalSection_Begin(_PyCriticalSection *c, PyMutex *m)
 }
 
 static inline void
-_PyCriticalSection_XBegin(_PyCriticalSection *c, PyObject *op)
+_PyCriticalSection_Begin(PyCriticalSection *c, PyObject *op)
 {
-#ifdef Py_GIL_DISABLED
-    if (op != NULL) {
-        _PyCriticalSection_Begin(c, &_PyObject_CAST(op)->ob_mutex);
-    }
-#endif
+    _PyCriticalSection_BeginMutex(c, &op->ob_mutex);
 }
+#define PyCriticalSection_Begin _PyCriticalSection_Begin
 
 // Removes the top-most critical section from the thread's stack of critical
 // sections. If the new top-most critical section is inactive, then it is
 // resumed.
 static inline void
-_PyCriticalSection_Pop(_PyCriticalSection *c)
+_PyCriticalSection_Pop(PyCriticalSection *c)
 {
     PyThreadState *tstate = _PyThreadState_GET();
-    uintptr_t prev = c->prev;
+    uintptr_t prev = c->_cs_prev;
     tstate->critical_section = prev;
 
     if ((prev & _Py_CRITICAL_SECTION_INACTIVE) != 0) {
@@ -228,28 +143,21 @@ _PyCriticalSection_Pop(_PyCriticalSection *c)
 }
 
 static inline void
-_PyCriticalSection_End(_PyCriticalSection *c)
+_PyCriticalSection_End(PyCriticalSection *c)
 {
-    PyMutex_Unlock(c->mutex);
+    PyMutex_Unlock(c->_cs_mutex);
     _PyCriticalSection_Pop(c);
 }
+#define PyCriticalSection_End _PyCriticalSection_End
 
 static inline void
-_PyCriticalSection_XEnd(_PyCriticalSection *c)
-{
-    if (c->mutex) {
-        _PyCriticalSection_End(c);
-    }
-}
-
-static inline void
-_PyCriticalSection2_Begin(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2)
+_PyCriticalSection2_BeginMutex(PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2)
 {
     if (m1 == m2) {
         // If the two mutex arguments are the same, treat this as a critical
         // section with a single mutex.
-        c->mutex2 = NULL;
-        _PyCriticalSection_Begin(&c->base, m1);
+        c->_cs_mutex2 = NULL;
+        _PyCriticalSection_BeginMutex(&c->_cs_base, m1);
         return;
     }
 
@@ -262,12 +170,12 @@ _PyCriticalSection2_Begin(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2)
         m2 = tmp;
     }
 
-    if (PyMutex_LockFast(&m1->v)) {
-        if (PyMutex_LockFast(&m2->v)) {
+    if (PyMutex_LockFast(&m1->_bits)) {
+        if (PyMutex_LockFast(&m2->_bits)) {
             PyThreadState *tstate = _PyThreadState_GET();
-            c->base.mutex = m1;
-            c->mutex2 = m2;
-            c->base.prev = tstate->critical_section;
+            c->_cs_base._cs_mutex = m1;
+            c->_cs_mutex2 = m2;
+            c->_cs_base._cs_prev = tstate->critical_section;
 
             uintptr_t p = (uintptr_t)c | _Py_CRITICAL_SECTION_TWO_MUTEXES;
             tstate->critical_section = p;
@@ -282,19 +190,22 @@ _PyCriticalSection2_Begin(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2)
 }
 
 static inline void
-_PyCriticalSection2_End(_PyCriticalSection2 *c)
+_PyCriticalSection2_Begin(PyCriticalSection2 *c, PyObject *a, PyObject *b)
 {
-    if (c->mutex2) {
-        PyMutex_Unlock(c->mutex2);
-    }
-    PyMutex_Unlock(c->base.mutex);
-    _PyCriticalSection_Pop(&c->base);
+    _PyCriticalSection2_BeginMutex(c, &a->ob_mutex, &b->ob_mutex);
 }
+#define PyCriticalSection2_Begin _PyCriticalSection2_Begin
 
-PyAPI_FUNC(void)
-_PyCriticalSection_SuspendAll(PyThreadState *tstate);
-
-#ifdef Py_GIL_DISABLED
+static inline void
+_PyCriticalSection2_End(PyCriticalSection2 *c)
+{
+    if (c->_cs_mutex2) {
+        PyMutex_Unlock(c->_cs_mutex2);
+    }
+    PyMutex_Unlock(c->_cs_base._cs_mutex);
+    _PyCriticalSection_Pop(&c->_cs_base);
+}
+#define PyCriticalSection2_End _PyCriticalSection2_End
 
 static inline void
 _PyCriticalSection_AssertHeld(PyMutex *mutex)
@@ -303,18 +214,18 @@ _PyCriticalSection_AssertHeld(PyMutex *mutex)
     PyThreadState *tstate = _PyThreadState_GET();
     uintptr_t prev = tstate->critical_section;
     if (prev & _Py_CRITICAL_SECTION_TWO_MUTEXES) {
-        _PyCriticalSection2 *cs = (_PyCriticalSection2 *)(prev & ~_Py_CRITICAL_SECTION_MASK);
-        assert(cs != NULL && (cs->base.mutex == mutex || cs->mutex2 == mutex));
+        PyCriticalSection2 *cs = (PyCriticalSection2 *)(prev & ~_Py_CRITICAL_SECTION_MASK);
+        assert(cs != NULL && (cs->_cs_base._cs_mutex == mutex || cs->_cs_mutex2 == mutex));
     }
     else {
-        _PyCriticalSection *cs = (_PyCriticalSection *)(tstate->critical_section & ~_Py_CRITICAL_SECTION_MASK);
-        assert(cs != NULL && cs->mutex == mutex);
+        PyCriticalSection *cs = (PyCriticalSection *)(tstate->critical_section & ~_Py_CRITICAL_SECTION_MASK);
+        assert(cs != NULL && cs->_cs_mutex == mutex);
     }
 
 #endif
 }
 
-#endif
+#endif /* Py_GIL_DISABLED */
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_dict.h b/Include/internal/pycore_dict.h
index 8d8d3748edaea8..36da498db2c3e1 100644
--- a/Include/internal/pycore_dict.h
+++ b/Include/internal/pycore_dict.h
@@ -16,8 +16,12 @@ extern "C" {
 // Unsafe flavor of PyDict_GetItemWithError(): no error checking
 extern PyObject* _PyDict_GetItemWithError(PyObject *dp, PyObject *key);
 
-extern int _PyDict_DelItemIf(PyObject *mp, PyObject *key,
-                             int (*predicate)(PyObject *value));
+// Delete an item from a dict if a predicate is true
+// Returns -1 on error, 1 if the item was deleted, 0 otherwise
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyDict_DelItemIf(PyObject *mp, PyObject *key,
+                                  int (*predicate)(PyObject *value, void *arg),
+                                  void *arg);
 
 // "KnownHash" variants
 // Export for '_asyncio' shared extension
@@ -106,8 +110,13 @@ PyAPI_FUNC(PyObject *)_PyDict_LoadGlobal(PyDictObject *, PyDictObject *, PyObjec
 /* Consumes references to key and value */
 PyAPI_FUNC(int) _PyDict_SetItem_Take2(PyDictObject *op, PyObject *key, PyObject *value);
 extern int _PyDict_SetItem_LockHeld(PyDictObject *dict, PyObject *name, PyObject *value);
-extern int _PyDict_GetItemRef_Unicode_LockHeld(PyDictObject *op, PyObject *key, PyObject **result);
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyDict_SetItem_KnownHash_LockHeld(PyDictObject *mp, PyObject *key,
+                                                   PyObject *value, Py_hash_t hash);
+// Export for '_asyncio' shared extension
+PyAPI_FUNC(int) _PyDict_GetItemRef_KnownHash_LockHeld(PyDictObject *op, PyObject *key, Py_hash_t hash, PyObject **result);
 extern int _PyDict_GetItemRef_KnownHash(PyDictObject *op, PyObject *key, Py_hash_t hash, PyObject **result);
+extern int _PyDict_GetItemRef_Unicode_LockHeld(PyDictObject *op, PyObject *key, PyObject **result);
 extern int _PyObjectDict_SetItem(PyTypeObject *tp, PyObject *obj, PyObject **dictptr, PyObject *name, PyObject *value);
 
 extern int _PyDict_Pop_KnownHash(
@@ -323,6 +332,8 @@ _PyInlineValuesSize(PyTypeObject *tp)
 int
 _PyDict_DetachFromObject(PyDictObject *dict, PyObject *obj);
 
+PyDictObject *_PyObject_MaterializeManagedDict_LockHeld(PyObject *);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_dtoa.h b/Include/internal/pycore_dtoa.h
index c5cfdf4ce8f823..e4222c5267d6be 100644
--- a/Include/internal/pycore_dtoa.h
+++ b/Include/internal/pycore_dtoa.h
@@ -11,8 +11,6 @@ extern "C" {
 #include "pycore_pymath.h"        // _PY_SHORT_FLOAT_REPR
 
 
-#if _PY_SHORT_FLOAT_REPR == 1
-
 typedef uint32_t ULong;
 
 struct
@@ -22,15 +20,15 @@ Bigint {
     ULong x[1];
 };
 
-#ifdef Py_USING_MEMORY_DEBUGGER
+#if defined(Py_USING_MEMORY_DEBUGGER) || _PY_SHORT_FLOAT_REPR == 0
 
 struct _dtoa_state {
     int _not_used;
 };
-#define _dtoa_interp_state_INIT(INTERP) \
+#define _dtoa_state_INIT(INTERP) \
     {0}
 
-#else  // !Py_USING_MEMORY_DEBUGGER
+#else  // !Py_USING_MEMORY_DEBUGGER && _PY_SHORT_FLOAT_REPR != 0
 
 /* The size of the Bigint freelist */
 #define Bigint_Kmax 7
@@ -66,8 +64,6 @@ extern char* _Py_dg_dtoa(double d, int mode, int ndigits,
                          int *decpt, int *sign, char **rve);
 extern void _Py_dg_freedtoa(char *s);
 
-#endif // _PY_SHORT_FLOAT_REPR == 1
-
 
 extern PyStatus _PyDtoa_Init(PyInterpreterState *interp);
 extern void _PyDtoa_Fini(PyInterpreterState *interp);
diff --git a/Include/internal/pycore_frame.h b/Include/internal/pycore_frame.h
index 994900c007f4bd..af181e3760d231 100644
--- a/Include/internal/pycore_frame.h
+++ b/Include/internal/pycore_frame.h
@@ -26,6 +26,10 @@ struct _frame {
     char f_trace_lines;         /* Emit per-line trace events? */
     char f_trace_opcodes;       /* Emit per-opcode trace events? */
     PyObject *f_extra_locals;   /* Dict for locals set by users using f_locals, could be NULL */
+    /* This is purely for backwards compatibility for PyEval_GetLocals.
+       PyEval_GetLocals requires a borrowed reference so the actual reference
+       is stored here */
+    PyObject *f_locals_cache;
     /* The frame data, if this frame object owns the frame */
     PyObject *_f_frame_data[1];
 };
@@ -214,7 +218,7 @@ _PyFrame_MakeAndSetFrameObject(_PyInterpreterFrame *frame);
 
 /* Gets the PyFrameObject for this frame, lazily
  * creating it if necessary.
- * Returns a borrowed referennce */
+ * Returns a borrowed reference */
 static inline PyFrameObject *
 _PyFrame_GetFrameObject(_PyInterpreterFrame *frame)
 {
diff --git a/Include/internal/pycore_gc.h b/Include/internal/pycore_gc.h
index 281094df786735..357177bcd6fd84 100644
--- a/Include/internal/pycore_gc.h
+++ b/Include/internal/pycore_gc.h
@@ -37,7 +37,15 @@ static inline PyObject* _Py_FROM_GC(PyGC_Head *gc) {
 }
 
 
-/* Bit flags for ob_gc_bits (in Py_GIL_DISABLED builds) */
+/* Bit flags for ob_gc_bits (in Py_GIL_DISABLED builds)
+ *
+ * Setting the bits requires a relaxed store. The per-object lock must also be
+ * held, except when the object is only visible to a single thread (e.g. during
+ * object initialization or destruction).
+ *
+ * Reading the bits requires using a relaxed load, but does not require holding
+ * the per-object lock.
+ */
 #ifdef Py_GIL_DISABLED
 #  define _PyGC_BITS_TRACKED        (1)     // Tracked by the GC
 #  define _PyGC_BITS_FINALIZED      (2)     // tp_finalize was called
@@ -48,10 +56,34 @@ static inline PyObject* _Py_FROM_GC(PyGC_Head *gc) {
 #  define _PyGC_BITS_DEFERRED       (64)    // Use deferred reference counting
 #endif
 
+#ifdef Py_GIL_DISABLED
+
+static inline void
+_PyObject_SET_GC_BITS(PyObject *op, uint8_t new_bits)
+{
+    uint8_t bits = _Py_atomic_load_uint8_relaxed(&op->ob_gc_bits);
+    _Py_atomic_store_uint8_relaxed(&op->ob_gc_bits, bits | new_bits);
+}
+
+static inline int
+_PyObject_HAS_GC_BITS(PyObject *op, uint8_t bits)
+{
+    return (_Py_atomic_load_uint8_relaxed(&op->ob_gc_bits) & bits) != 0;
+}
+
+static inline void
+_PyObject_CLEAR_GC_BITS(PyObject *op, uint8_t bits_to_clear)
+{
+    uint8_t bits = _Py_atomic_load_uint8_relaxed(&op->ob_gc_bits);
+    _Py_atomic_store_uint8_relaxed(&op->ob_gc_bits, bits & ~bits_to_clear);
+}
+
+#endif
+
 /* True if the object is currently tracked by the GC. */
 static inline int _PyObject_GC_IS_TRACKED(PyObject *op) {
 #ifdef Py_GIL_DISABLED
-    return (op->ob_gc_bits & _PyGC_BITS_TRACKED) != 0;
+    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_TRACKED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     return (gc->_gc_next != 0);
@@ -80,12 +112,12 @@ static inline int _PyObject_GC_MAY_BE_TRACKED(PyObject *obj) {
  * for calling _PyMem_FreeDelayed on the referenced
  * memory. */
 static inline int _PyObject_GC_IS_SHARED(PyObject *op) {
-    return (op->ob_gc_bits & _PyGC_BITS_SHARED) != 0;
+    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_SHARED);
 }
 #define _PyObject_GC_IS_SHARED(op) _PyObject_GC_IS_SHARED(_Py_CAST(PyObject*, op))
 
 static inline void _PyObject_GC_SET_SHARED(PyObject *op) {
-    op->ob_gc_bits |= _PyGC_BITS_SHARED;
+    _PyObject_SET_GC_BITS(op, _PyGC_BITS_SHARED);
 }
 #define _PyObject_GC_SET_SHARED(op) _PyObject_GC_SET_SHARED(_Py_CAST(PyObject*, op))
 
@@ -95,13 +127,13 @@ static inline void _PyObject_GC_SET_SHARED(PyObject *op) {
  * Objects with this bit that are GC objects will automatically
  * delay-freed by PyObject_GC_Del. */
 static inline int _PyObject_GC_IS_SHARED_INLINE(PyObject *op) {
-    return (op->ob_gc_bits & _PyGC_BITS_SHARED_INLINE) != 0;
+    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_SHARED_INLINE);
 }
 #define _PyObject_GC_IS_SHARED_INLINE(op) \
     _PyObject_GC_IS_SHARED_INLINE(_Py_CAST(PyObject*, op))
 
 static inline void _PyObject_GC_SET_SHARED_INLINE(PyObject *op) {
-    op->ob_gc_bits |= _PyGC_BITS_SHARED_INLINE;
+    _PyObject_SET_GC_BITS(op, _PyGC_BITS_SHARED_INLINE);
 }
 #define _PyObject_GC_SET_SHARED_INLINE(op) \
     _PyObject_GC_SET_SHARED_INLINE(_Py_CAST(PyObject*, op))
@@ -110,26 +142,11 @@ static inline void _PyObject_GC_SET_SHARED_INLINE(PyObject *op) {
 
 /* Bit flags for _gc_prev */
 /* Bit 0 is set when tp_finalize is called */
-#define _PyGC_PREV_MASK_FINALIZED  1
+#define _PyGC_PREV_MASK_FINALIZED  (1)
 /* Bit 1 is set when the object is in generation which is GCed currently. */
-#define _PyGC_PREV_MASK_COLLECTING 2
-
-/* Bit 0 in _gc_next is the old space bit.
- * It is set as follows:
- * Young: gcstate->visited_space
- * old[0]: 0
- * old[1]: 1
- * permanent: 0
- *
- * During a collection all objects handled should have the bit set to
- * gcstate->visited_space, as objects are moved from the young gen
- * and the increment into old[gcstate->visited_space].
- * When object are moved from the pending space, old[gcstate->visited_space^1]
- * into the increment, the old space bit is flipped.
-*/
-#define _PyGC_NEXT_MASK_OLD_SPACE_1    1
-
-#define _PyGC_PREV_SHIFT           2
+#define _PyGC_PREV_MASK_COLLECTING (2)
+/* The (N-2) most significant bits contain the real address. */
+#define _PyGC_PREV_SHIFT           (2)
 #define _PyGC_PREV_MASK            (((uintptr_t) -1) << _PyGC_PREV_SHIFT)
 
 /* set for debugging information */
@@ -155,13 +172,11 @@ typedef enum {
 // Lowest bit of _gc_next is used for flags only in GC.
 // But it is always 0 for normal code.
 static inline PyGC_Head* _PyGCHead_NEXT(PyGC_Head *gc) {
-    uintptr_t next = gc->_gc_next & _PyGC_PREV_MASK;
+    uintptr_t next = gc->_gc_next;
     return (PyGC_Head*)next;
 }
 static inline void _PyGCHead_SET_NEXT(PyGC_Head *gc, PyGC_Head *next) {
-    uintptr_t unext = (uintptr_t)next;
-    assert((unext & ~_PyGC_PREV_MASK) == 0);
-    gc->_gc_next = (gc->_gc_next & ~_PyGC_PREV_MASK) | unext;
+    gc->_gc_next = (uintptr_t)next;
 }
 
 // Lowest two bits of _gc_prev is used for _PyGC_PREV_MASK_* flags.
@@ -169,7 +184,6 @@ static inline PyGC_Head* _PyGCHead_PREV(PyGC_Head *gc) {
     uintptr_t prev = (gc->_gc_prev & _PyGC_PREV_MASK);
     return (PyGC_Head*)prev;
 }
-
 static inline void _PyGCHead_SET_PREV(PyGC_Head *gc, PyGC_Head *prev) {
     uintptr_t uprev = (uintptr_t)prev;
     assert((uprev & ~_PyGC_PREV_MASK) == 0);
@@ -178,7 +192,7 @@ static inline void _PyGCHead_SET_PREV(PyGC_Head *gc, PyGC_Head *prev) {
 
 static inline int _PyGC_FINALIZED(PyObject *op) {
 #ifdef Py_GIL_DISABLED
-    return (op->ob_gc_bits & _PyGC_BITS_FINALIZED) != 0;
+    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_FINALIZED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     return ((gc->_gc_prev & _PyGC_PREV_MASK_FINALIZED) != 0);
@@ -186,7 +200,7 @@ static inline int _PyGC_FINALIZED(PyObject *op) {
 }
 static inline void _PyGC_SET_FINALIZED(PyObject *op) {
 #ifdef Py_GIL_DISABLED
-    op->ob_gc_bits |= _PyGC_BITS_FINALIZED;
+    _PyObject_SET_GC_BITS(op, _PyGC_BITS_FINALIZED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     gc->_gc_prev |= _PyGC_PREV_MASK_FINALIZED;
@@ -194,7 +208,7 @@ static inline void _PyGC_SET_FINALIZED(PyObject *op) {
 }
 static inline void _PyGC_CLEAR_FINALIZED(PyObject *op) {
 #ifdef Py_GIL_DISABLED
-    op->ob_gc_bits &= ~_PyGC_BITS_FINALIZED;
+    _PyObject_CLEAR_GC_BITS(op, _PyGC_BITS_FINALIZED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     gc->_gc_prev &= ~_PyGC_PREV_MASK_FINALIZED;
@@ -255,13 +269,6 @@ struct gc_generation {
                   generations */
 };
 
-struct gc_collection_stats {
-    /* number of collected objects */
-    Py_ssize_t collected;
-    /* total number of uncollectable objects (put into gc.garbage) */
-    Py_ssize_t uncollectable;
-};
-
 /* Running stats per generation */
 struct gc_generation_stats {
     /* total number of collections */
@@ -283,8 +290,8 @@ struct _gc_runtime_state {
     int enabled;
     int debug;
     /* linked lists of container objects */
-    struct gc_generation young;
-    struct gc_generation old[2];
+    struct gc_generation generations[NUM_GENERATIONS];
+    PyGC_Head *generation0;
     /* a permanent generation which won't be collected */
     struct gc_generation permanent_generation;
     struct gc_generation_stats generation_stats[NUM_GENERATIONS];
@@ -295,12 +302,6 @@ struct _gc_runtime_state {
     /* a list of callbacks to be invoked when collection is performed */
     PyObject *callbacks;
 
-    Py_ssize_t heap_size;
-    Py_ssize_t work_to_do;
-    /* Which of the old spaces is the visited space */
-    int visited_space;
-
-#ifdef Py_GIL_DISABLED
     /* This is the number of objects that survived the last full
        collection. It approximates the number of long lived objects
        tracked by the GC.
@@ -313,17 +314,14 @@ struct _gc_runtime_state {
        the first time. */
     Py_ssize_t long_lived_pending;
 
+#ifdef Py_GIL_DISABLED
     /* gh-117783: Deferred reference counting is not fully implemented yet, so
-       as a temporary measure we treat objects using deferred referenence
-       counting as immortal. */
-    struct {
-        /* Immortalize objects instead of marking them as using deferred
-           reference counting. */
-        int enabled;
-
-        /* Set enabled=1 when the first background thread is created. */
-        int enable_on_thread_created;
-    } immortalize;
+       as a temporary measure we treat objects using deferred reference
+       counting as immortal. The value may be zero, one, or a negative number:
+        0: immortalize deferred RC objects once the first thread is created
+        1: immortalize all deferred RC objects immediately
+        <0: suppressed; don't immortalize objects */
+    int immortalize;
 #endif
 };
 
@@ -337,7 +335,8 @@ struct _gc_thread_state {
 
 extern void _PyGC_InitState(struct _gc_runtime_state *);
 
-extern Py_ssize_t _PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason);
+extern Py_ssize_t _PyGC_Collect(PyThreadState *tstate, int generation,
+                                _PyGC_Reason reason);
 extern void _PyGC_CollectNoFail(PyThreadState *tstate);
 
 /* Freeze objects tracked by the GC and ignore them in future collections. */
diff --git a/Include/internal/pycore_global_objects.h b/Include/internal/pycore_global_objects.h
index 327fcc24cb29f1..9d376e7db021ef 100644
--- a/Include/internal/pycore_global_objects.h
+++ b/Include/internal/pycore_global_objects.h
@@ -67,7 +67,7 @@ struct _Py_interp_cached_objects {
     PyObject *interned_strings;
 
     /* AST */
-    PyObject *str_replace_inf;
+    PyObject *_unused_str_replace_inf;  // kept in 3.13 for ABI compatibility
 
     /* object.__reduce__ */
     PyObject *objreduce;
diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
index ca7355b2b61aa7..cd56ffde9e555e 100644
--- a/Include/internal/pycore_global_objects_fini_generated.h
+++ b/Include/internal/pycore_global_objects_fini_generated.h
@@ -551,21 +551,17 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_setcomp));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_string));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(anon_unknown));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(close_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_close_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_open_br));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dbl_percent));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(defaults));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dot));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(dot_locals));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(empty));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(generic_base));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(json_decoder));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(kwdefaults));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(list_err));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(newline));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(open_br));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(percent));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(str_replace_inf));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(type_params));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_STR(utf_8));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(CANCELLED));
@@ -577,7 +573,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(TextIOWrapper));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(True));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(WarningMessage));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_WindowsConsoleIO));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__IOBase_closed));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__abc_tpflags__));
@@ -592,7 +587,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__anext__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__annotations__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__args__));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__asyncio_running_event_loop__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__await__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__bases__));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__bool__));
@@ -771,18 +765,19 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_lock_unlock_module));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_loop));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_needs_com_addref_));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_only_immortal));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_pack_));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_restype_));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_showwarnmsg));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_shutdown));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_slotnames));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_strptime));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_strptime_datetime));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_swappedbytes_));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_type_));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_uninitialized_submodules));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_warn_unawaited_coroutine));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_xoptions));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(a));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(abs_tol));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(access));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(aclose));
@@ -806,7 +801,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(attribute));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(authorizer_callback));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(autocommit));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(b));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(backtick));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(base));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(before));
@@ -824,10 +818,10 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(byteorder));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(bytes));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(bytes_per_sep));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(c));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(c_call));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(c_exception));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(c_return));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cached_datetime_module));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cached_statements));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cadata));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cafile));
@@ -879,7 +873,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(count));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(covariant));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(cwd));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(d));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(data));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(database));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(day));
@@ -908,7 +901,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dont_inherit));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dst));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(dst_dir_fd));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(e));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(eager_start));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(effective_ids));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(element_factory));
@@ -932,7 +924,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(exp));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(extend));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(extra_tokens));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(f));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(facility));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(factory));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(false));
@@ -965,7 +956,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(fset));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(func));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(future));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(g));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(generation));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(genexpr));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(get));
@@ -979,7 +969,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(globals));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(groupindex));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(groups));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(h));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(handle));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(handle_seq));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(has_location));
@@ -1090,7 +1079,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(msg));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(mutex));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(mycmp));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(n));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(n_arg));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(n_fields));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(n_sequence_fields));
@@ -1136,7 +1124,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(outgoing));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(overlapped));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(owner));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(p));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(pages));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(parent));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(password));
@@ -1164,7 +1151,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(ps2));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(query));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(quotetabs));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(r));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(raw));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(read));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(read1));
@@ -1188,7 +1174,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(return));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(reverse));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(reversed));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(s));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(salt));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sched_priority));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(scheduler));
@@ -1221,6 +1206,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(sort));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(source));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(source_traceback));
+    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(spam));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(src));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(src_dir_fd));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(stacklevel));
@@ -1294,7 +1280,6 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(writable));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(write));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(write_through));
-    _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(x));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(year));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(zdict));
     _PyStaticObject_CheckRefcnt((PyObject *)&_Py_SINGLETON(strings).ascii[0]);
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
index fbb25285f0f282..cad2d1a8d22049 100644
--- a/Include/internal/pycore_global_strings.h
+++ b/Include/internal/pycore_global_strings.h
@@ -37,21 +37,17 @@ struct _Py_global_strings {
         STRUCT_FOR_STR(anon_setcomp, "<setcomp>")
         STRUCT_FOR_STR(anon_string, "<string>")
         STRUCT_FOR_STR(anon_unknown, "<unknown>")
-        STRUCT_FOR_STR(close_br, "}")
         STRUCT_FOR_STR(dbl_close_br, "}}")
         STRUCT_FOR_STR(dbl_open_br, "{{")
         STRUCT_FOR_STR(dbl_percent, "%%")
         STRUCT_FOR_STR(defaults, ".defaults")
-        STRUCT_FOR_STR(dot, ".")
         STRUCT_FOR_STR(dot_locals, ".<locals>")
         STRUCT_FOR_STR(empty, "")
         STRUCT_FOR_STR(generic_base, ".generic_base")
         STRUCT_FOR_STR(json_decoder, "json.decoder")
         STRUCT_FOR_STR(kwdefaults, ".kwdefaults")
         STRUCT_FOR_STR(list_err, "list index out of range")
-        STRUCT_FOR_STR(newline, "\n")
-        STRUCT_FOR_STR(open_br, "{")
-        STRUCT_FOR_STR(percent, "%")
+        STRUCT_FOR_STR(str_replace_inf, "1e309")
         STRUCT_FOR_STR(type_params, ".type_params")
         STRUCT_FOR_STR(utf_8, "utf-8")
     } literals;
@@ -66,7 +62,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(TextIOWrapper)
         STRUCT_FOR_ID(True)
         STRUCT_FOR_ID(WarningMessage)
-        STRUCT_FOR_ID(_)
         STRUCT_FOR_ID(_WindowsConsoleIO)
         STRUCT_FOR_ID(__IOBase_closed)
         STRUCT_FOR_ID(__abc_tpflags__)
@@ -81,7 +76,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(__anext__)
         STRUCT_FOR_ID(__annotations__)
         STRUCT_FOR_ID(__args__)
-        STRUCT_FOR_ID(__asyncio_running_event_loop__)
         STRUCT_FOR_ID(__await__)
         STRUCT_FOR_ID(__bases__)
         STRUCT_FOR_ID(__bool__)
@@ -260,18 +254,19 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(_lock_unlock_module)
         STRUCT_FOR_ID(_loop)
         STRUCT_FOR_ID(_needs_com_addref_)
+        STRUCT_FOR_ID(_only_immortal)
         STRUCT_FOR_ID(_pack_)
         STRUCT_FOR_ID(_restype_)
         STRUCT_FOR_ID(_showwarnmsg)
         STRUCT_FOR_ID(_shutdown)
         STRUCT_FOR_ID(_slotnames)
+        STRUCT_FOR_ID(_strptime)
         STRUCT_FOR_ID(_strptime_datetime)
         STRUCT_FOR_ID(_swappedbytes_)
         STRUCT_FOR_ID(_type_)
         STRUCT_FOR_ID(_uninitialized_submodules)
         STRUCT_FOR_ID(_warn_unawaited_coroutine)
         STRUCT_FOR_ID(_xoptions)
-        STRUCT_FOR_ID(a)
         STRUCT_FOR_ID(abs_tol)
         STRUCT_FOR_ID(access)
         STRUCT_FOR_ID(aclose)
@@ -295,7 +290,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(attribute)
         STRUCT_FOR_ID(authorizer_callback)
         STRUCT_FOR_ID(autocommit)
-        STRUCT_FOR_ID(b)
         STRUCT_FOR_ID(backtick)
         STRUCT_FOR_ID(base)
         STRUCT_FOR_ID(before)
@@ -313,10 +307,10 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(byteorder)
         STRUCT_FOR_ID(bytes)
         STRUCT_FOR_ID(bytes_per_sep)
-        STRUCT_FOR_ID(c)
         STRUCT_FOR_ID(c_call)
         STRUCT_FOR_ID(c_exception)
         STRUCT_FOR_ID(c_return)
+        STRUCT_FOR_ID(cached_datetime_module)
         STRUCT_FOR_ID(cached_statements)
         STRUCT_FOR_ID(cadata)
         STRUCT_FOR_ID(cafile)
@@ -368,7 +362,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(count)
         STRUCT_FOR_ID(covariant)
         STRUCT_FOR_ID(cwd)
-        STRUCT_FOR_ID(d)
         STRUCT_FOR_ID(data)
         STRUCT_FOR_ID(database)
         STRUCT_FOR_ID(day)
@@ -397,7 +390,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(dont_inherit)
         STRUCT_FOR_ID(dst)
         STRUCT_FOR_ID(dst_dir_fd)
-        STRUCT_FOR_ID(e)
         STRUCT_FOR_ID(eager_start)
         STRUCT_FOR_ID(effective_ids)
         STRUCT_FOR_ID(element_factory)
@@ -421,7 +413,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(exp)
         STRUCT_FOR_ID(extend)
         STRUCT_FOR_ID(extra_tokens)
-        STRUCT_FOR_ID(f)
         STRUCT_FOR_ID(facility)
         STRUCT_FOR_ID(factory)
         STRUCT_FOR_ID(false)
@@ -454,7 +445,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(fset)
         STRUCT_FOR_ID(func)
         STRUCT_FOR_ID(future)
-        STRUCT_FOR_ID(g)
         STRUCT_FOR_ID(generation)
         STRUCT_FOR_ID(genexpr)
         STRUCT_FOR_ID(get)
@@ -468,7 +458,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(globals)
         STRUCT_FOR_ID(groupindex)
         STRUCT_FOR_ID(groups)
-        STRUCT_FOR_ID(h)
         STRUCT_FOR_ID(handle)
         STRUCT_FOR_ID(handle_seq)
         STRUCT_FOR_ID(has_location)
@@ -579,7 +568,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(msg)
         STRUCT_FOR_ID(mutex)
         STRUCT_FOR_ID(mycmp)
-        STRUCT_FOR_ID(n)
         STRUCT_FOR_ID(n_arg)
         STRUCT_FOR_ID(n_fields)
         STRUCT_FOR_ID(n_sequence_fields)
@@ -625,7 +613,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(outgoing)
         STRUCT_FOR_ID(overlapped)
         STRUCT_FOR_ID(owner)
-        STRUCT_FOR_ID(p)
         STRUCT_FOR_ID(pages)
         STRUCT_FOR_ID(parent)
         STRUCT_FOR_ID(password)
@@ -653,7 +640,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(ps2)
         STRUCT_FOR_ID(query)
         STRUCT_FOR_ID(quotetabs)
-        STRUCT_FOR_ID(r)
         STRUCT_FOR_ID(raw)
         STRUCT_FOR_ID(read)
         STRUCT_FOR_ID(read1)
@@ -677,7 +663,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(return)
         STRUCT_FOR_ID(reverse)
         STRUCT_FOR_ID(reversed)
-        STRUCT_FOR_ID(s)
         STRUCT_FOR_ID(salt)
         STRUCT_FOR_ID(sched_priority)
         STRUCT_FOR_ID(scheduler)
@@ -710,6 +695,7 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(sort)
         STRUCT_FOR_ID(source)
         STRUCT_FOR_ID(source_traceback)
+        STRUCT_FOR_ID(spam)
         STRUCT_FOR_ID(src)
         STRUCT_FOR_ID(src_dir_fd)
         STRUCT_FOR_ID(stacklevel)
@@ -783,7 +769,6 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(writable)
         STRUCT_FOR_ID(write)
         STRUCT_FOR_ID(write_through)
-        STRUCT_FOR_ID(x)
         STRUCT_FOR_ID(year)
         STRUCT_FOR_ID(zdict)
     } identifiers;
@@ -806,6 +791,10 @@ struct _Py_global_strings {
      (_Py_SINGLETON(strings.identifiers._py_ ## NAME._ascii.ob_base))
 #define _Py_STR(NAME) \
      (_Py_SINGLETON(strings.literals._py_ ## NAME._ascii.ob_base))
+#define _Py_LATIN1_CHR(CH) \
+    ((CH) < 128 \
+     ? (PyObject*)&_Py_SINGLETON(strings).ascii[(CH)] \
+     : (PyObject*)&_Py_SINGLETON(strings).latin1[(CH) - 128])
 
 /* _Py_DECLARE_STR() should precede all uses of _Py_STR() in a function.
 
diff --git a/Include/internal/pycore_import.h b/Include/internal/pycore_import.h
index bd40707fed21a8..55029abdd31b5a 100644
--- a/Include/internal/pycore_import.h
+++ b/Include/internal/pycore_import.h
@@ -20,7 +20,8 @@ PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *module);
 extern int _PyImport_SetModuleString(const char *name, PyObject* module);
 
 extern void _PyImport_AcquireLock(PyInterpreterState *interp);
-extern int _PyImport_ReleaseLock(PyInterpreterState *interp);
+extern void _PyImport_ReleaseLock(PyInterpreterState *interp);
+extern void _PyImport_ReInitLock(PyInterpreterState *interp);
 
 // This is used exclusively for the sys and builtins modules:
 extern int _PyImport_FixupBuiltin(
@@ -94,11 +95,7 @@ struct _import_state {
 #endif
     PyObject *import_func;
     /* The global import lock. */
-    struct {
-        PyThread_type_lock mutex;
-        unsigned long thread;
-        int level;
-    } lock;
+    _PyRecursiveMutex lock;
     /* diagnostic info in PyImport_ImportModuleLevelObject() */
     struct {
         int import_level;
@@ -123,11 +120,6 @@ struct _import_state {
 #define IMPORTS_INIT \
     { \
         DLOPENFLAGS_INIT \
-        .lock = { \
-            .mutex = NULL, \
-            .thread = PYTHREAD_INVALID_THREAD_ID, \
-            .level = 0, \
-        }, \
         .find_and_load = { \
             .header = 1, \
         }, \
@@ -180,11 +172,6 @@ extern void _PyImport_FiniCore(PyInterpreterState *interp);
 extern void _PyImport_FiniExternal(PyInterpreterState *interp);
 
 
-#ifdef HAVE_FORK
-extern PyStatus _PyImport_ReInitLock(PyInterpreterState *interp);
-#endif
-
-
 extern PyObject* _PyImport_GetBuiltinModuleNames(void);
 
 struct _module_alias {
diff --git a/Include/internal/pycore_importdl.h b/Include/internal/pycore_importdl.h
index e5f222b371a113..525a16f6b97274 100644
--- a/Include/internal/pycore_importdl.h
+++ b/Include/internal/pycore_importdl.h
@@ -56,9 +56,11 @@ extern int _Py_ext_module_loader_info_init_for_core(
 extern int _Py_ext_module_loader_info_init_for_builtin(
     struct _Py_ext_module_loader_info *p_info,
     PyObject *name);
+#ifdef HAVE_DYNAMIC_LOADING
 extern int _Py_ext_module_loader_info_init_from_spec(
     struct _Py_ext_module_loader_info *info,
     PyObject *spec);
+#endif
 
 /* The result from running an extension module's init function. */
 struct _Py_ext_module_loader_result {
@@ -87,9 +89,11 @@ extern void _Py_ext_module_loader_result_apply_error(
 
 /* The module init function. */
 typedef PyObject *(*PyModInitFunction)(void);
+#ifdef HAVE_DYNAMIC_LOADING
 extern PyModInitFunction _PyImport_GetModInitFunc(
     struct _Py_ext_module_loader_info *info,
     FILE *fp);
+#endif
 extern int _PyImport_RunModInitFunc(
     PyModInitFunction p0,
     struct _Py_ext_module_loader_info *info,
diff --git a/Include/internal/pycore_interp.h b/Include/internal/pycore_interp.h
index 86dada5061e7b5..075d35a3755777 100644
--- a/Include/internal/pycore_interp.h
+++ b/Include/internal/pycore_interp.h
@@ -30,6 +30,7 @@ extern "C" {
 #include "pycore_list.h"          // struct _Py_list_state
 #include "pycore_mimalloc.h"      // struct _mimalloc_interp_state
 #include "pycore_object_state.h"  // struct _py_object_state
+#include "pycore_optimizer.h"     // _PyOptimizerObject
 #include "pycore_obmalloc.h"      // struct _obmalloc_state
 #include "pycore_qsbr.h"          // struct _qsbr_state
 #include "pycore_tstate.h"        // _PyThreadStateImpl
@@ -274,6 +275,8 @@ struct _is {
     /* the initial PyInterpreterState.threads.head */
     _PyThreadStateImpl _initial_thread;
     Py_ssize_t _interactive_src_count;
+    // In 3.14+ this is interp->threads.preallocated.
+    _PyThreadStateImpl *threads_preallocated;
 };
 
 
@@ -401,7 +404,10 @@ PyAPI_FUNC(PyStatus) _PyInterpreterState_New(
 #define RARE_EVENT_INTERP_INC(interp, name) \
     do { \
         /* saturating add */ \
-        if (interp->rare_events.name < UINT8_MAX) interp->rare_events.name++; \
+        int val = FT_ATOMIC_LOAD_UINT8_RELAXED(interp->rare_events.name); \
+        if (val < UINT8_MAX) { \
+            FT_ATOMIC_STORE_UINT8(interp->rare_events.name, val + 1); \
+        } \
         RARE_EVENT_STAT_INC(name); \
     } while (0); \
 
diff --git a/Include/internal/pycore_lock.h b/Include/internal/pycore_lock.h
index a5b28e4bd4744e..2a18bb7644725f 100644
--- a/Include/internal/pycore_lock.h
+++ b/Include/internal/pycore_lock.h
@@ -13,48 +13,10 @@ extern "C" {
 #  error "this header requires Py_BUILD_CORE define"
 #endif
 
-
-// A mutex that occupies one byte. The lock can be zero initialized.
-//
-// Only the two least significant bits are used. The remaining bits should be
-// zero:
-// 0b00: unlocked
-// 0b01: locked
-// 0b10: unlocked and has parked threads
-// 0b11: locked and has parked threads
-//
-// Typical initialization:
-//   PyMutex m = (PyMutex){0};
-//
-// Or initialize as global variables:
-//   static PyMutex m;
-//
-// Typical usage:
-//   PyMutex_Lock(&m);
-//   ...
-//   PyMutex_Unlock(&m);
-
-// NOTE: In Py_GIL_DISABLED builds, `struct _PyMutex` is defined in Include/object.h.
-// The Py_GIL_DISABLED builds need the definition in Include/object.h for the
-// `ob_mutex` field in PyObject. For the default (non-free-threaded) build,
-// we define the struct here to avoid exposing it in the public API.
-#ifndef Py_GIL_DISABLED
-struct _PyMutex { uint8_t v; };
-#endif
-
-typedef struct _PyMutex PyMutex;
-
-#define _Py_UNLOCKED    0
-#define _Py_LOCKED      1
+//_Py_UNLOCKED is defined as 0 and _Py_LOCKED as 1 in Include/cpython/lock.h
 #define _Py_HAS_PARKED  2
 #define _Py_ONCE_INITIALIZED 4
 
-// (private) slow path for locking the mutex
-PyAPI_FUNC(void) _PyMutex_LockSlow(PyMutex *m);
-
-// (private) slow path for unlocking the mutex
-PyAPI_FUNC(void) _PyMutex_UnlockSlow(PyMutex *m);
-
 static inline int
 PyMutex_LockFast(uint8_t *lock_bits)
 {
@@ -62,35 +24,11 @@ PyMutex_LockFast(uint8_t *lock_bits)
     return _Py_atomic_compare_exchange_uint8(lock_bits, &expected, _Py_LOCKED);
 }
 
-// Locks the mutex.
-//
-// If the mutex is currently locked, the calling thread will be parked until
-// the mutex is unlocked. If the current thread holds the GIL, then the GIL
-// will be released while the thread is parked.
-static inline void
-PyMutex_Lock(PyMutex *m)
-{
-    uint8_t expected = _Py_UNLOCKED;
-    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_LOCKED)) {
-        _PyMutex_LockSlow(m);
-    }
-}
-
-// Unlocks the mutex.
-static inline void
-PyMutex_Unlock(PyMutex *m)
-{
-    uint8_t expected = _Py_LOCKED;
-    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_UNLOCKED)) {
-        _PyMutex_UnlockSlow(m);
-    }
-}
-
 // Checks if the mutex is currently locked.
 static inline int
 PyMutex_IsLocked(PyMutex *m)
 {
-    return (_Py_atomic_load_uint8(&m->v) & _Py_LOCKED) != 0;
+    return (_Py_atomic_load_uint8(&m->_bits) & _Py_LOCKED) != 0;
 }
 
 // Re-initializes the mutex after a fork to the unlocked state.
@@ -121,7 +59,7 @@ static inline void
 PyMutex_LockFlags(PyMutex *m, _PyLockFlags flags)
 {
     uint8_t expected = _Py_UNLOCKED;
-    if (!_Py_atomic_compare_exchange_uint8(&m->v, &expected, _Py_LOCKED)) {
+    if (!_Py_atomic_compare_exchange_uint8(&m->_bits, &expected, _Py_LOCKED)) {
         _PyMutex_LockTimed(m, -1, flags);
     }
 }
@@ -190,12 +128,6 @@ _PyRawMutex_Unlock(_PyRawMutex *m)
     _PyRawMutex_UnlockSlow(m);
 }
 
-// A data structure that can be used to run initialization code once in a
-// thread-safe manner. The C++11 equivalent is std::call_once.
-typedef struct {
-    uint8_t v;
-} _PyOnceFlag;
-
 // Type signature for one-time initialization functions. The function should
 // return 0 on success and -1 on failure.
 typedef int _Py_once_fn_t(void *arg);
@@ -219,6 +151,18 @@ _PyOnceFlag_CallOnce(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
     return _PyOnceFlag_CallOnceSlow(flag, fn, arg);
 }
 
+// A recursive mutex. The mutex should zero-initialized.
+typedef struct {
+    PyMutex mutex;
+    unsigned long long thread;  // i.e., PyThread_get_thread_ident_ex()
+    size_t level;
+} _PyRecursiveMutex;
+
+PyAPI_FUNC(int) _PyRecursiveMutex_IsLockedByCurrentThread(_PyRecursiveMutex *m);
+PyAPI_FUNC(void) _PyRecursiveMutex_Lock(_PyRecursiveMutex *m);
+PyAPI_FUNC(void) _PyRecursiveMutex_Unlock(_PyRecursiveMutex *m);
+
+
 // A readers-writer (RW) lock. The lock supports multiple concurrent readers or
 // a single writer. The lock is write-preferring: if a writer is waiting while
 // the lock is read-locked then, new readers will be blocked. This avoids
@@ -284,12 +228,12 @@ PyAPI_FUNC(void) _PySeqLock_AbandonWrite(_PySeqLock *seqlock);
 PyAPI_FUNC(uint32_t) _PySeqLock_BeginRead(_PySeqLock *seqlock);
 
 // End the read operation and confirm that the sequence number has not changed.
-// Returns 1 if the read was successful or 0 if the read should be re-tried.
-PyAPI_FUNC(uint32_t) _PySeqLock_EndRead(_PySeqLock *seqlock, uint32_t previous);
+// Returns 1 if the read was successful or 0 if the read should be retried.
+PyAPI_FUNC(int) _PySeqLock_EndRead(_PySeqLock *seqlock, uint32_t previous);
 
 // Check if the lock was held during a fork and clear the lock.  Returns 1
-// if the lock was held and any associated datat should be cleared.
-PyAPI_FUNC(uint32_t) _PySeqLock_AfterFork(_PySeqLock *seqlock);
+// if the lock was held and any associated data should be cleared.
+PyAPI_FUNC(int) _PySeqLock_AfterFork(_PySeqLock *seqlock);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_long.h b/Include/internal/pycore_long.h
index f04f66d053bab9..ff7d9afc03a4f2 100644
--- a/Include/internal/pycore_long.h
+++ b/Include/internal/pycore_long.h
@@ -47,17 +47,6 @@ extern "C" {
 # error "_PY_LONG_DEFAULT_MAX_STR_DIGITS smaller than threshold."
 #endif
 
-// _PyLong_NumBits.  Return the number of bits needed to represent the
-// absolute value of a long.  For example, this returns 1 for 1 and -1, 2
-// for 2 and -2, and 2 for 3 and -3.  It returns 0 for 0.
-// v must not be NULL, and must be a normalized long.
-// (size_t)-1 is returned and OverflowError set if the true result doesn't
-// fit in a size_t.
-//
-// Export for 'math' shared extension.
-PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
-
-
 /* runtime lifecycle */
 
 extern PyStatus _PyLong_InitTypes(PyInterpreterState *);
@@ -189,8 +178,12 @@ PyAPI_FUNC(int) _PyLong_Size_t_Converter(PyObject *, void *);
  * we define them to the numbers in both places and then assert that
  * they're the same.
  */
-static_assert(SIGN_MASK == _PyLong_SIGN_MASK, "SIGN_MASK does not match _PyLong_SIGN_MASK");
-static_assert(NON_SIZE_BITS == _PyLong_NON_SIZE_BITS, "NON_SIZE_BITS does not match _PyLong_NON_SIZE_BITS");
+#if SIGN_MASK != _PyLong_SIGN_MASK
+#  error "SIGN_MASK does not match _PyLong_SIGN_MASK"
+#endif
+#if NON_SIZE_BITS != _PyLong_NON_SIZE_BITS
+#  error "NON_SIZE_BITS does not match _PyLong_NON_SIZE_BITS"
+#endif
 
 /* All *compact" values are guaranteed to fit into
  * a Py_ssize_t with at least one bit to spare.
diff --git a/Include/internal/pycore_mimalloc.h b/Include/internal/pycore_mimalloc.h
index 10d451398f1410..d870d01beb702c 100644
--- a/Include/internal/pycore_mimalloc.h
+++ b/Include/internal/pycore_mimalloc.h
@@ -36,9 +36,18 @@ typedef enum {
 #  define MI_TSAN 1
 #endif
 
-#include "mimalloc.h"
-#include "mimalloc/types.h"
-#include "mimalloc/internal.h"
+#ifdef __cplusplus
+extern "C++" {
+#endif
+
+#include "mimalloc/mimalloc.h"
+#include "mimalloc/mimalloc/types.h"
+#include "mimalloc/mimalloc/internal.h"
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 
 #ifdef Py_GIL_DISABLED
@@ -52,6 +61,7 @@ struct _mimalloc_thread_state {
     mi_heap_t *current_object_heap;
     mi_heap_t heaps[_Py_MIMALLOC_HEAP_COUNT];
     mi_tld_t tld;
+    int initialized;
     struct llist_node page_list;
 };
 #endif
diff --git a/Include/internal/pycore_modsupport.h b/Include/internal/pycore_modsupport.h
index 3d3cd6722528e9..11fde814875938 100644
--- a/Include/internal/pycore_modsupport.h
+++ b/Include/internal/pycore_modsupport.h
@@ -67,24 +67,6 @@ PyAPI_FUNC(void) _PyArg_BadArgument(
 
 // --- _PyArg_Parser API ---------------------------------------------------
 
-typedef struct _PyArg_Parser {
-    const char *format;
-    const char * const *keywords;
-    const char *fname;
-    const char *custom_msg;
-    _PyOnceFlag once;       /* atomic one-time initialization flag */
-    int is_kwtuple_owned;   /* does this parser own the kwtuple object? */
-    int pos;                /* number of positional-only arguments */
-    int min;                /* minimal number of arguments */
-    int max;                /* maximal number of positional arguments */
-    PyObject *kwtuple;      /* tuple of keyword parameter names */
-    struct _PyArg_Parser *next;
-} _PyArg_Parser;
-
-// Export for '_testclinic' shared extension
-PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
-                                                 struct _PyArg_Parser *, ...);
-
 // Export for '_dbm' shared extension
 PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords(
     PyObject *const *args,
diff --git a/Include/internal/pycore_moduleobject.h b/Include/internal/pycore_moduleobject.h
index 049677b292e235..dacc00dba54495 100644
--- a/Include/internal/pycore_moduleobject.h
+++ b/Include/internal/pycore_moduleobject.h
@@ -11,6 +11,8 @@ extern "C" {
 extern void _PyModule_Clear(PyObject *);
 extern void _PyModule_ClearDict(PyObject *);
 extern int _PyModuleSpec_IsInitializing(PyObject *);
+extern int _PyModuleSpec_GetFileOrigin(PyObject *, PyObject **);
+extern int _PyModule_IsPossiblyShadowing(PyObject *);
 
 extern int _PyModule_IsExtension(PyObject *obj);
 
diff --git a/Include/internal/pycore_object.h b/Include/internal/pycore_object.h
index f15c332a7b0811..07b5a95ae1a037 100644
--- a/Include/internal/pycore_object.h
+++ b/Include/internal/pycore_object.h
@@ -15,6 +15,30 @@ extern "C" {
 #include "pycore_pyatomic_ft_wrappers.h"  // FT_ATOMIC_STORE_PTR_RELAXED
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 
+
+#define _Py_IMMORTAL_REFCNT_LOOSE ((_Py_IMMORTAL_REFCNT >> 1) + 1)
+
+// gh-121528, gh-118997: Similar to _Py_IsImmortal() but be more loose when
+// comparing the reference count to stay compatible with C extensions built
+// with the stable ABI 3.11 or older. Such extensions implement INCREF/DECREF
+// as refcnt++ and refcnt-- without taking in account immortal objects. For
+// example, the reference count of an immortal object can change from
+// _Py_IMMORTAL_REFCNT to _Py_IMMORTAL_REFCNT+1 (INCREF) or
+// _Py_IMMORTAL_REFCNT-1 (DECREF).
+//
+// This function should only be used in assertions. Otherwise, _Py_IsImmortal()
+// must be used instead.
+static inline int _Py_IsImmortalLoose(PyObject *op)
+{
+#if defined(Py_GIL_DISABLED)
+    return _Py_IsImmortal(op);
+#else
+    return (op->ob_refcnt >= _Py_IMMORTAL_REFCNT_LOOSE);
+#endif
+}
+#define _Py_IsImmortalLoose(op) _Py_IsImmortalLoose(_PyObject_CAST(op))
+
+
 /* Check if an object is consistent. For example, ensure that the reference
    counter is greater than or equal to 1, and ensure that ob_type is not NULL.
 
@@ -81,6 +105,14 @@ PyAPI_FUNC(void) _Py_NO_RETURN _Py_FatalRefcountErrorFunc(
 #define _Py_FatalRefcountError(message) \
     _Py_FatalRefcountErrorFunc(__func__, (message))
 
+#define _PyReftracerTrack(obj, operation) \
+    do { \
+        struct _reftracer_runtime_state *tracer = &_PyRuntime.ref_tracer; \
+        if (tracer->tracer_func != NULL) { \
+            void *data = tracer->tracer_data; \
+            tracer->tracer_func((obj), (operation), data); \
+        } \
+    } while(0)
 
 #ifdef Py_REF_DEBUG
 /* The symbol is only exposed in the API for the sake of extensions
@@ -123,6 +155,10 @@ static inline void _Py_RefcntAdd(PyObject* op, Py_ssize_t n)
         _Py_atomic_add_ssize(&op->ob_ref_shared, (n << _Py_REF_SHARED_SHIFT));
     }
 #endif
+    // Although the ref count was increased by `n` (which may be greater than 1)
+    // it is only a single increment (i.e. addition) operation, so only 1 refcnt
+    // increment operation is counted.
+    _Py_INCREF_STAT_INC();
 }
 #define _Py_RefcntAdd(op, n) _Py_RefcntAdd(_PyObject_CAST(op), n)
 
@@ -134,7 +170,7 @@ extern void _Py_SetImmortalUntracked(PyObject *op);
 static inline void _Py_SetMortal(PyObject *op, Py_ssize_t refcnt)
 {
     if (op) {
-        assert(_Py_IsImmortal(op));
+        assert(_Py_IsImmortalLoose(op));
 #ifdef Py_GIL_DISABLED
         op->ob_tid = _Py_UNOWNED_TID;
         op->ob_ref_local = 0;
@@ -168,7 +204,7 @@ static inline int
 _PyObject_HasDeferredRefcount(PyObject *op)
 {
 #ifdef Py_GIL_DISABLED
-    return (op->ob_gc_bits & _PyGC_BITS_DEFERRED) != 0;
+    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_DEFERRED);
 #else
     return 0;
 #endif
@@ -192,6 +228,7 @@ _Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
 #ifdef Py_TRACE_REFS
         _Py_ForgetReference(op);
 #endif
+        _PyReftracerTrack(op, PyRefTracer_DESTROY);
         destruct(op);
     }
 }
@@ -262,7 +299,7 @@ extern int _PyTraceMalloc_TraceRef(PyObject *op, PyRefTracerEvent event, void*);
 // Fast inlined version of PyType_HasFeature()
 static inline int
 _PyType_HasFeature(PyTypeObject *type, unsigned long feature) {
-    return ((type->tp_flags & feature) != 0);
+    return ((FT_ATOMIC_LOAD_ULONG_RELAXED(type->tp_flags) & feature) != 0);
 }
 
 extern void _PyType_InitCache(PyInterpreterState *interp);
@@ -281,7 +318,7 @@ _PyObject_Init(PyObject *op, PyTypeObject *typeobj)
 {
     assert(op != NULL);
     Py_SET_TYPE(op, typeobj);
-    assert(_PyType_HasFeature(typeobj, Py_TPFLAGS_HEAPTYPE) || _Py_IsImmortal(typeobj));
+    assert(_PyType_HasFeature(typeobj, Py_TPFLAGS_HEAPTYPE) || _Py_IsImmortalLoose(typeobj));
     Py_INCREF(typeobj);
     _Py_NewReference(op);
 }
@@ -320,7 +357,7 @@ static inline void _PyObject_GC_TRACK(
                           "object already tracked by the garbage collector",
                           filename, lineno, __func__);
 #ifdef Py_GIL_DISABLED
-    op->ob_gc_bits |= _PyGC_BITS_TRACKED;
+    _PyObject_SET_GC_BITS(op, _PyGC_BITS_TRACKED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     _PyObject_ASSERT_FROM(op,
@@ -329,12 +366,11 @@ static inline void _PyObject_GC_TRACK(
                           filename, lineno, __func__);
 
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    PyGC_Head *generation0 = &interp->gc.young.head;
+    PyGC_Head *generation0 = interp->gc.generation0;
     PyGC_Head *last = (PyGC_Head*)(generation0->_gc_prev);
     _PyGCHead_SET_NEXT(last, gc);
     _PyGCHead_SET_PREV(gc, last);
-    /* Young objects will be moved into the visited space during GC, so set the bit here */
-    gc->_gc_next = ((uintptr_t)generation0) | interp->gc.visited_space;
+    _PyGCHead_SET_NEXT(gc, generation0);
     generation0->_gc_prev = (uintptr_t)gc;
 #endif
 }
@@ -361,7 +397,7 @@ static inline void _PyObject_GC_UNTRACK(
                           filename, lineno, __func__);
 
 #ifdef Py_GIL_DISABLED
-    op->ob_gc_bits &= ~_PyGC_BITS_TRACKED;
+    _PyObject_CLEAR_GC_BITS(op, _PyGC_BITS_TRACKED);
 #else
     PyGC_Head *gc = _Py_AS_GC(op);
     PyGC_Head *prev = _PyGCHead_PREV(gc);
@@ -497,6 +533,9 @@ _Py_NewRefWithLock(PyObject *op)
     if (_Py_TryIncrefFast(op)) {
         return op;
     }
+#ifdef Py_REF_DEBUG
+    _Py_IncRefTotal(_PyThreadState_GET());
+#endif
     _Py_INCREF_STAT_INC();
     for (;;) {
         Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
@@ -541,7 +580,51 @@ _PyObject_SetMaybeWeakref(PyObject *op)
     }
 }
 
+extern int _PyObject_ResurrectEndSlow(PyObject *op);
+#endif
+
+// Temporarily resurrects an object during deallocation. The refcount is set
+// to one.
+static inline void
+_PyObject_ResurrectStart(PyObject *op)
+{
+    assert(Py_REFCNT(op) == 0);
+#ifdef Py_REF_DEBUG
+    _Py_IncRefTotal(_PyThreadState_GET());
+#endif
+#ifdef Py_GIL_DISABLED
+    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, _Py_ThreadId());
+    _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 1);
+    _Py_atomic_store_ssize_relaxed(&op->ob_ref_shared, 0);
+#else
+    Py_SET_REFCNT(op, 1);
+#endif
+}
+
+// Undoes an object resurrection by decrementing the refcount without calling
+// _Py_Dealloc(). Returns 0 if the object is dead (the normal case), and
+// deallocation should continue. Returns 1 if the object is still alive.
+static inline int
+_PyObject_ResurrectEnd(PyObject *op)
+{
+#ifdef Py_REF_DEBUG
+    _Py_DecRefTotal(_PyThreadState_GET());
 #endif
+#ifndef Py_GIL_DISABLED
+    Py_SET_REFCNT(op, Py_REFCNT(op) - 1);
+    return Py_REFCNT(op) != 0;
+#else
+    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
+    Py_ssize_t shared = _Py_atomic_load_ssize_acquire(&op->ob_ref_shared);
+    if (_Py_IsOwnedByCurrentThread(op) && local == 1 && shared == 0) {
+        // Fast-path: object has a single refcount and is owned by this thread
+        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0);
+        return 0;
+    }
+    // Slow-path: object has a shared refcount or is not owned by this thread
+    return _PyObject_ResurrectEndSlow(op);
+#endif
+}
 
 /* Tries to incref op and returns 1 if successful or 0 otherwise. */
 static inline int
@@ -586,7 +669,7 @@ _PyObject_GET_WEAKREFS_LISTPTR(PyObject *op)
     if (PyType_Check(op) &&
             ((PyTypeObject *)op)->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(
+        managed_static_type_state *state = _PyStaticType_GetState(
                                                 interp, (PyTypeObject *)op);
         return _PyStaticType_GET_WEAKREFS_LISTPTR(state);
     }
@@ -625,6 +708,20 @@ _PyObject_IS_GC(PyObject *obj)
             && (type->tp_is_gc == NULL || type->tp_is_gc(obj)));
 }
 
+// Fast inlined version of PyObject_Hash()
+static inline Py_hash_t
+_PyObject_HashFast(PyObject *op)
+{
+    if (PyUnicode_CheckExact(op)) {
+        Py_hash_t hash = FT_ATOMIC_LOAD_SSIZE_RELAXED(
+                             _PyASCIIObject_CAST(op)->hash);
+        if (hash != -1) {
+            return hash;
+        }
+    }
+    return PyObject_Hash(op);
+}
+
 // Fast inlined version of PyType_IS_GC()
 #define _PyType_IS_GC(t) _PyType_HasFeature((t), Py_TPFLAGS_HAVE_GC)
 
@@ -730,13 +827,7 @@ PyAPI_FUNC(PyObject*) _PyObject_GetState(PyObject *);
  * Third party code unintentionally rely on problematic fpcasts. The call
  * trampoline mitigates common occurrences of bad fpcasts on Emscripten.
  */
-#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
-#define _PyCFunction_TrampolineCall(meth, self, args) \
-    _PyCFunctionWithKeywords_TrampolineCall( \
-        (*(PyCFunctionWithKeywords)(void(*)(void))(meth)), (self), (args), NULL)
-extern PyObject* _PyCFunctionWithKeywords_TrampolineCall(
-    PyCFunctionWithKeywords meth, PyObject *, PyObject *, PyObject *);
-#else
+#if !(defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE))
 #define _PyCFunction_TrampolineCall(meth, self, args) \
     (meth)((self), (args))
 #define _PyCFunctionWithKeywords_TrampolineCall(meth, self, args, kw) \
diff --git a/Include/internal/pycore_object_stack.h b/Include/internal/pycore_object_stack.h
index fc130b1e9920b4..639f3c0c0d0b76 100644
--- a/Include/internal/pycore_object_stack.h
+++ b/Include/internal/pycore_object_stack.h
@@ -73,6 +73,16 @@ _PyObjectStack_Pop(_PyObjectStack *stack)
     return obj;
 }
 
+static inline Py_ssize_t
+_PyObjectStack_Size(_PyObjectStack *stack)
+{
+    Py_ssize_t size = 0;
+    for (_PyObjectStackChunk *buf = stack->head; buf != NULL; buf = buf->prev) {
+        size += buf->n;
+    }
+    return size;
+}
+
 // Merge src into dst, leaving src empty
 extern void
 _PyObjectStack_Merge(_PyObjectStack *dst, _PyObjectStack *src);
diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
index 2a237bc6dd8ee5..bbba0bbbf4b0aa 100644
--- a/Include/internal/pycore_opcode_metadata.h
+++ b/Include/internal/pycore_opcode_metadata.h
@@ -1060,8 +1060,8 @@ const struct opcode_metadata _PyOpcode_opcode_metadata[268] = {
     [INSTRUMENTED_CALL] = { true, INSTR_FMT_IBC00, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
     [INSTRUMENTED_CALL_FUNCTION_EX] = { true, INSTR_FMT_IX, 0 },
     [INSTRUMENTED_CALL_KW] = { true, INSTR_FMT_IB, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
-    [INSTRUMENTED_END_FOR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG | HAS_ESCAPES_FLAG },
-    [INSTRUMENTED_END_SEND] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG | HAS_ESCAPES_FLAG },
+    [INSTRUMENTED_END_FOR] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG },
+    [INSTRUMENTED_END_SEND] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG },
     [INSTRUMENTED_FOR_ITER] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG | HAS_ESCAPES_FLAG },
     [INSTRUMENTED_INSTRUCTION] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
     [INSTRUMENTED_JUMP_BACKWARD] = { true, INSTR_FMT_IBC, HAS_ARG_FLAG | HAS_EVAL_BREAK_FLAG },
@@ -1161,10 +1161,10 @@ const struct opcode_metadata _PyOpcode_opcode_metadata[268] = {
     [TO_BOOL] = { true, INSTR_FMT_IXC00, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
     [TO_BOOL_ALWAYS_TRUE] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
     [TO_BOOL_BOOL] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
-    [TO_BOOL_INT] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
+    [TO_BOOL_INT] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG | HAS_ESCAPES_FLAG },
     [TO_BOOL_LIST] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
     [TO_BOOL_NONE] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
-    [TO_BOOL_STR] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG },
+    [TO_BOOL_STR] = { true, INSTR_FMT_IXC00, HAS_EXIT_FLAG | HAS_ESCAPES_FLAG },
     [UNARY_INVERT] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
     [UNARY_NEGATIVE] = { true, INSTR_FMT_IX, HAS_ERROR_FLAG | HAS_ESCAPES_FLAG },
     [UNARY_NOT] = { true, INSTR_FMT_IX, HAS_PURE_FLAG },
@@ -1299,7 +1299,6 @@ _PyOpcode_macro_expansion[256] = {
     [LOAD_FAST_CHECK] = { .nuops = 1, .uops = { { _LOAD_FAST_CHECK, 0, 0 } } },
     [LOAD_FAST_LOAD_FAST] = { .nuops = 2, .uops = { { _LOAD_FAST, 5, 0 }, { _LOAD_FAST, 6, 0 } } },
     [LOAD_FROM_DICT_OR_DEREF] = { .nuops = 1, .uops = { { _LOAD_FROM_DICT_OR_DEREF, 0, 0 } } },
-    [LOAD_FROM_DICT_OR_GLOBALS] = { .nuops = 1, .uops = { { _LOAD_FROM_DICT_OR_GLOBALS, 0, 0 } } },
     [LOAD_GLOBAL] = { .nuops = 1, .uops = { { _LOAD_GLOBAL, 0, 0 } } },
     [LOAD_GLOBAL_BUILTIN] = { .nuops = 3, .uops = { { _GUARD_GLOBALS_VERSION, 1, 1 }, { _GUARD_BUILTINS_VERSION, 1, 2 }, { _LOAD_GLOBAL_BUILTINS, 1, 3 } } },
     [LOAD_GLOBAL_MODULE] = { .nuops = 2, .uops = { { _GUARD_GLOBALS_VERSION, 1, 1 }, { _LOAD_GLOBAL_MODULE, 1, 3 } } },
diff --git a/Include/internal/pycore_optimizer.h b/Include/internal/pycore_optimizer.h
index c0a76e85350541..49aa67c6f3ccc0 100644
--- a/Include/internal/pycore_optimizer.h
+++ b/Include/internal/pycore_optimizer.h
@@ -11,12 +11,162 @@ extern "C" {
 #include "pycore_uop_ids.h"
 #include <stdbool.h>
 
+
+typedef struct _PyExecutorLinkListNode {
+    struct _PyExecutorObject *next;
+    struct _PyExecutorObject *previous;
+} _PyExecutorLinkListNode;
+
+
+/* Bloom filter with m = 256
+ * https://en.wikipedia.org/wiki/Bloom_filter */
+#define BLOOM_FILTER_WORDS 8
+
+typedef struct _bloom_filter {
+    uint32_t bits[BLOOM_FILTER_WORDS];
+} _PyBloomFilter;
+
+typedef struct {
+    uint8_t opcode;
+    uint8_t oparg;
+    uint8_t valid;
+    uint8_t linked;
+    int index;           // Index of ENTER_EXECUTOR (if code isn't NULL, below).
+    _PyBloomFilter bloom;
+    _PyExecutorLinkListNode links;
+    PyCodeObject *code;  // Weak (NULL if no corresponding ENTER_EXECUTOR).
+} _PyVMData;
+
+#define UOP_FORMAT_TARGET 0
+#define UOP_FORMAT_EXIT 1
+#define UOP_FORMAT_JUMP 2
+#define UOP_FORMAT_UNUSED 3
+
+/* Depending on the format,
+ * the 32 bits between the oparg and operand are:
+ * UOP_FORMAT_TARGET:
+ *    uint32_t target;
+ * UOP_FORMAT_EXIT
+ *    uint16_t exit_index;
+ *    uint16_t error_target;
+ * UOP_FORMAT_JUMP
+ *    uint16_t jump_target;
+ *    uint16_t error_target;
+ */
+typedef struct {
+    uint16_t opcode:14;
+    uint16_t format:2;
+    uint16_t oparg;
+    union {
+        uint32_t target;
+        struct {
+            union {
+                uint16_t exit_index;
+                uint16_t jump_target;
+            };
+            uint16_t error_target;
+        };
+    };
+    uint64_t operand;  // A cache entry
+} _PyUOpInstruction;
+
+static inline uint32_t uop_get_target(const _PyUOpInstruction *inst)
+{
+    assert(inst->format == UOP_FORMAT_TARGET);
+    return inst->target;
+}
+
+static inline uint16_t uop_get_exit_index(const _PyUOpInstruction *inst)
+{
+    assert(inst->format == UOP_FORMAT_EXIT);
+    return inst->exit_index;
+}
+
+static inline uint16_t uop_get_jump_target(const _PyUOpInstruction *inst)
+{
+    assert(inst->format == UOP_FORMAT_JUMP);
+    return inst->jump_target;
+}
+
+static inline uint16_t uop_get_error_target(const _PyUOpInstruction *inst)
+{
+    assert(inst->format != UOP_FORMAT_TARGET);
+    return inst->error_target;
+}
+
+typedef struct _exit_data {
+    uint32_t target;
+    _Py_BackoffCounter temperature;
+    const struct _PyExecutorObject *executor;
+} _PyExitData;
+
+typedef struct _PyExecutorObject {
+    PyObject_VAR_HEAD
+    const _PyUOpInstruction *trace;
+    _PyVMData vm_data; /* Used by the VM, but opaque to the optimizer */
+    uint32_t exit_count;
+    uint32_t code_size;
+    size_t jit_size;
+    void *jit_code;
+    void *jit_side_entry;
+    _PyExitData exits[1];
+} _PyExecutorObject;
+
+typedef struct _PyOptimizerObject _PyOptimizerObject;
+
+/* Should return > 0 if a new executor is created. O if no executor is produced and < 0 if an error occurred. */
+typedef int (*optimize_func)(
+    _PyOptimizerObject* self, struct _PyInterpreterFrame *frame,
+    _Py_CODEUNIT *instr, _PyExecutorObject **exec_ptr,
+    int curr_stackentries);
+
+struct _PyOptimizerObject {
+    PyObject_HEAD
+    optimize_func optimize;
+    /* Data needed by the optimizer goes here, but is opaque to the VM */
+};
+
+/** Test support **/
+typedef struct {
+    _PyOptimizerObject base;
+    int64_t count;
+} _PyCounterOptimizerObject;
+
+_PyOptimizerObject *_Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject* optimizer);
+
+PyAPI_FUNC(int) _Py_SetTier2Optimizer(_PyOptimizerObject* optimizer);
+
+PyAPI_FUNC(_PyOptimizerObject *) _Py_GetOptimizer(void);
+
+PyAPI_FUNC(_PyExecutorObject *) _Py_GetExecutor(PyCodeObject *code, int offset);
+
+void _Py_ExecutorInit(_PyExecutorObject *, const _PyBloomFilter *);
+void _Py_ExecutorDetach(_PyExecutorObject *);
+void _Py_BloomFilter_Init(_PyBloomFilter *);
+void _Py_BloomFilter_Add(_PyBloomFilter *bloom, void *obj);
+PyAPI_FUNC(void) _Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj);
+/* For testing */
+PyAPI_FUNC(PyObject *) _PyOptimizer_NewCounter(void);
+PyAPI_FUNC(PyObject *) _PyOptimizer_NewUOpOptimizer(void);
+
+#define _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS 3
+#define _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS 6
+
+#ifdef _Py_TIER2
+PyAPI_FUNC(void) _Py_Executors_InvalidateDependency(PyInterpreterState *interp, void *obj, int is_invalidation);
+PyAPI_FUNC(void) _Py_Executors_InvalidateAll(PyInterpreterState *interp, int is_invalidation);
+#else
+#  define _Py_Executors_InvalidateDependency(A, B, C) ((void)0)
+#  define _Py_Executors_InvalidateAll(A, B) ((void)0)
+#endif
+
+
 // This is the length of the trace we project initially.
 #define UOP_MAX_TRACE_LENGTH 800
 
 #define TRACE_STACK_SIZE 5
 
-int _Py_uop_analyze_and_optimize(_PyInterpreterFrame *frame,
+int _Py_uop_analyze_and_optimize(struct _PyInterpreterFrame *frame,
     _PyUOpInstruction *trace, int trace_len, int curr_stackentries,
     _PyBloomFilter *dependencies);
 
@@ -107,14 +257,14 @@ extern void _Py_uop_abstractcontext_fini(_Py_UOpsContext *ctx);
 extern _Py_UOpsAbstractFrame *_Py_uop_frame_new(
     _Py_UOpsContext *ctx,
     PyCodeObject *co,
-    _Py_UopsSymbol **localsplus_start,
-    int n_locals_already_filled,
-    int curr_stackentries);
+    int curr_stackentries,
+    _Py_UopsSymbol **args,
+    int arg_len);
 extern int _Py_uop_frame_pop(_Py_UOpsContext *ctx);
 
 PyAPI_FUNC(PyObject *) _Py_uop_symbols_test(PyObject *self, PyObject *ignored);
 
-PyAPI_FUNC(int) _PyOptimizer_Optimize(_PyInterpreterFrame *frame, _Py_CODEUNIT *start, PyObject **stack_pointer, _PyExecutorObject **exec_ptr);
+PyAPI_FUNC(int) _PyOptimizer_Optimize(struct _PyInterpreterFrame *frame, _Py_CODEUNIT *start, PyObject **stack_pointer, _PyExecutorObject **exec_ptr);
 
 #ifdef __cplusplus
 }
diff --git a/Include/internal/pycore_parser.h b/Include/internal/pycore_parser.h
index 067b34c12c4e7f..b16084aaa15515 100644
--- a/Include/internal/pycore_parser.h
+++ b/Include/internal/pycore_parser.h
@@ -21,6 +21,9 @@ extern "C" {
 struct _parser_runtime_state {
 #ifdef Py_DEBUG
     long memo_statistics[_PYPEGEN_NSTATISTICS];
+#ifdef Py_GIL_DISABLED
+    PyMutex mutex;
+#endif
 #else
     int _not_used;
 #endif
@@ -28,8 +31,10 @@ struct _parser_runtime_state {
 };
 
 _Py_DECLARE_STR(empty, "")
+#if defined(Py_DEBUG) && defined(Py_GIL_DISABLED)
 #define _parser_runtime_state_INIT \
     { \
+        .mutex = {0}, \
         .dummy_name = { \
             .kind = Name_kind, \
             .v.Name.id = &_Py_STR(empty), \
@@ -40,6 +45,20 @@ _Py_DECLARE_STR(empty, "")
             .end_col_offset = 0, \
         }, \
     }
+#else
+#define _parser_runtime_state_INIT \
+    { \
+        .dummy_name = { \
+            .kind = Name_kind, \
+            .v.Name.id = &_Py_STR(empty), \
+            .v.Name.ctx = Load, \
+            .lineno = 1, \
+            .col_offset = 0, \
+            .end_lineno = 1, \
+            .end_col_offset = 0, \
+        }, \
+    }
+#endif
 
 extern struct _mod* _PyParser_ASTFromString(
     const char *str,
diff --git a/Include/internal/pycore_pyatomic_ft_wrappers.h b/Include/internal/pycore_pyatomic_ft_wrappers.h
index bc6aba56cf9fc7..a1bb383bcd22e9 100644
--- a/Include/internal/pycore_pyatomic_ft_wrappers.h
+++ b/Include/internal/pycore_pyatomic_ft_wrappers.h
@@ -45,6 +45,8 @@ extern "C" {
     _Py_atomic_load_uint16_relaxed(&value)
 #define FT_ATOMIC_LOAD_UINT32_RELAXED(value) \
     _Py_atomic_load_uint32_relaxed(&value)
+#define FT_ATOMIC_LOAD_ULONG_RELAXED(value) \
+    _Py_atomic_load_ulong_relaxed(&value)
 #define FT_ATOMIC_STORE_PTR_RELAXED(value, new_value) \
     _Py_atomic_store_ptr_relaxed(&value, new_value)
 #define FT_ATOMIC_STORE_PTR_RELEASE(value, new_value) \
@@ -75,6 +77,7 @@ extern "C" {
 #define FT_ATOMIC_LOAD_UINT8_RELAXED(value) value
 #define FT_ATOMIC_LOAD_UINT16_RELAXED(value) value
 #define FT_ATOMIC_LOAD_UINT32_RELAXED(value) value
+#define FT_ATOMIC_LOAD_ULONG_RELAXED(value) value
 #define FT_ATOMIC_STORE_PTR_RELAXED(value, new_value) value = new_value
 #define FT_ATOMIC_STORE_PTR_RELEASE(value, new_value) value = new_value
 #define FT_ATOMIC_STORE_UINTPTR_RELEASE(value, new_value) value = new_value
diff --git a/Include/internal/pycore_pyerrors.h b/Include/internal/pycore_pyerrors.h
index 683d87a0d0b129..615cc23ec93528 100644
--- a/Include/internal/pycore_pyerrors.h
+++ b/Include/internal/pycore_pyerrors.h
@@ -125,6 +125,18 @@ PyAPI_FUNC(void) _PyErr_SetString(
     PyObject *exception,
     const char *string);
 
+/*
+ * Set an exception with the error message decoded from the current locale
+ * encoding (LC_CTYPE).
+ *
+ * Exceptions occurring in decoding take priority over the desired exception.
+ *
+ * Exported for '_ctypes' shared extensions.
+ */
+PyAPI_FUNC(void) _PyErr_SetLocaleString(
+    PyObject *exception,
+    const char *string);
+
 PyAPI_FUNC(PyObject*) _PyErr_Format(
     PyThreadState *tstate,
     PyObject *exception,
@@ -167,6 +179,11 @@ void _PyErr_FormatNote(const char *format, ...);
 
 Py_DEPRECATED(3.12) extern void _PyErr_ChainExceptions(PyObject *, PyObject *, PyObject *);
 
+// implementation detail for the codeop module.
+// Exported for test.test_peg_generator.test_c_parser
+PyAPI_DATA(PyTypeObject) _PyExc_IncompleteInputError;
+#define PyExc_IncompleteInputError ((PyObject *)(&_PyExc_IncompleteInputError))
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/internal/pycore_pystate.h b/Include/internal/pycore_pystate.h
index a668d78b969bd9..b0e72523f58ed8 100644
--- a/Include/internal/pycore_pystate.h
+++ b/Include/internal/pycore_pystate.h
@@ -217,10 +217,14 @@ static inline PyInterpreterState* _PyInterpreterState_GET(void) {
 
 // PyThreadState functions
 
-extern PyThreadState * _PyThreadState_New(
+// Export for _testinternalcapi
+PyAPI_FUNC(PyThreadState *) _PyThreadState_New(
     PyInterpreterState *interp,
     int whence);
 extern void _PyThreadState_Bind(PyThreadState *tstate);
+PyAPI_FUNC(PyThreadState *) _PyThreadState_NewBound(
+    PyInterpreterState *interp,
+    int whence);
 extern PyThreadState * _PyThreadState_RemoveExcept(PyThreadState *tstate);
 extern void _PyThreadState_DeleteList(PyThreadState *list);
 extern void _PyThreadState_ClearMimallocHeaps(PyThreadState *tstate);
diff --git a/Include/internal/pycore_qsbr.h b/Include/internal/pycore_qsbr.h
index c3680a205542f7..20e643e172b38d 100644
--- a/Include/internal/pycore_qsbr.h
+++ b/Include/internal/pycore_qsbr.h
@@ -140,7 +140,7 @@ _Py_qsbr_register(struct _PyThreadStateImpl *tstate,
 
 // Disassociates a PyThreadState from the QSBR state and frees the QSBR state.
 extern void
-_Py_qsbr_unregister(struct _PyThreadStateImpl *tstate);
+_Py_qsbr_unregister(PyThreadState *tstate);
 
 extern void
 _Py_qsbr_fini(PyInterpreterState *interp);
diff --git a/Include/internal/pycore_runtime.h b/Include/internal/pycore_runtime.h
index f58eccf729cb2a..d4291b87261ae0 100644
--- a/Include/internal/pycore_runtime.h
+++ b/Include/internal/pycore_runtime.h
@@ -44,6 +44,15 @@ struct _gilstate_runtime_state {
 
 /* Runtime audit hook state */
 
+#define _Py_Debug_Cookie "xdebugpy"
+
+#ifdef Py_GIL_DISABLED
+# define _Py_Debug_gilruntimestate_enabled offsetof(struct _gil_runtime_state, enabled)
+# define _Py_Debug_Free_Threaded 1
+#else
+# define _Py_Debug_gilruntimestate_enabled 0
+# define _Py_Debug_Free_Threaded 0
+#endif
 typedef struct _Py_AuditHookEntry {
     struct _Py_AuditHookEntry *next;
     Py_AuditHookFunction hookCFunction;
@@ -53,14 +62,18 @@ typedef struct _Py_AuditHookEntry {
 typedef struct _Py_DebugOffsets {
     char cookie[8];
     uint64_t version;
+    uint64_t free_threaded;
     // Runtime state offset;
     struct _runtime_state {
+        uint64_t size;
         uint64_t finalizing;
         uint64_t interpreters_head;
     } runtime_state;
 
     // Interpreter state offset;
     struct _interpreter_state {
+        uint64_t size;
+        uint64_t id;
         uint64_t next;
         uint64_t threads_head;
         uint64_t gc;
@@ -68,22 +81,28 @@ typedef struct _Py_DebugOffsets {
         uint64_t sysdict;
         uint64_t builtins;
         uint64_t ceval_gil;
+        uint64_t gil_runtime_state;
+        uint64_t gil_runtime_state_enabled;
         uint64_t gil_runtime_state_locked;
         uint64_t gil_runtime_state_holder;
     } interpreter_state;
 
     // Thread state offset;
     struct _thread_state{
+        uint64_t size;
         uint64_t prev;
         uint64_t next;
         uint64_t interp;
         uint64_t current_frame;
         uint64_t thread_id;
         uint64_t native_thread_id;
+        uint64_t datastack_chunk;
+        uint64_t status;
     } thread_state;
 
     // InterpreterFrame offset;
     struct _interpreter_frame {
+        uint64_t size;
         uint64_t previous;
         uint64_t executable;
         uint64_t instr_ptr;
@@ -91,16 +110,12 @@ typedef struct _Py_DebugOffsets {
         uint64_t owner;
     } interpreter_frame;
 
-    // CFrame offset;
-    struct _cframe {
-        uint64_t current_frame;
-        uint64_t previous;
-    } cframe;
-
     // Code object offset;
     struct _code_object {
+        uint64_t size;
         uint64_t filename;
         uint64_t name;
+        uint64_t qualname;
         uint64_t linetable;
         uint64_t firstlineno;
         uint64_t argcount;
@@ -111,25 +126,72 @@ typedef struct _Py_DebugOffsets {
 
     // PyObject offset;
     struct _pyobject {
+        uint64_t size;
         uint64_t ob_type;
     } pyobject;
 
     // PyTypeObject object offset;
     struct _type_object {
+        uint64_t size;
         uint64_t tp_name;
+        uint64_t tp_repr;
+        uint64_t tp_flags;
     } type_object;
 
     // PyTuple object offset;
     struct _tuple_object {
+        uint64_t size;
         uint64_t ob_item;
+        uint64_t ob_size;
     } tuple_object;
 
+    // PyList object offset;
+    struct _list_object {
+        uint64_t size;
+        uint64_t ob_item;
+        uint64_t ob_size;
+    } list_object;
+
+    // PyDict object offset;
+    struct _dict_object {
+        uint64_t size;
+        uint64_t ma_keys;
+        uint64_t ma_values;
+    } dict_object;
+
+    // PyFloat object offset;
+    struct _float_object {
+        uint64_t size;
+        uint64_t ob_fval;
+    } float_object;
+
+    // PyLong object offset;
+    struct _long_object {
+        uint64_t size;
+        uint64_t lv_tag;
+        uint64_t ob_digit;
+    } long_object;
+
+    // PyBytes object offset;
+    struct _bytes_object {
+        uint64_t size;
+        uint64_t ob_size;
+        uint64_t ob_sval;
+    } bytes_object;
+
     // Unicode object offset;
     struct _unicode_object {
+        uint64_t size;
         uint64_t state;
         uint64_t length;
-        size_t asciiobject_size;
+        uint64_t asciiobject_size;
     } unicode_object;
+
+    // GC runtime state offset;
+    struct _gc {
+        uint64_t size;
+        uint64_t collecting;
+    } gc;
 } _Py_DebugOffsets;
 
 /* Reference tracer state */
diff --git a/Include/internal/pycore_runtime_init.h b/Include/internal/pycore_runtime_init.h
index 98920dbb7c7a92..7eef9edc0aa33d 100644
--- a/Include/internal/pycore_runtime_init.h
+++ b/Include/internal/pycore_runtime_init.h
@@ -29,16 +29,20 @@ extern PyTypeObject _PyExc_MemoryError;
 /* The static initializers defined here should only be used
    in the runtime init code (in pystate.c and pylifecycle.c). */
 
-#define _PyRuntimeState_INIT(runtime) \
+#define _PyRuntimeState_INIT(runtime, debug_cookie) \
     { \
         .debug_offsets = { \
-            .cookie = "xdebugpy", \
+            .cookie = debug_cookie, \
             .version = PY_VERSION_HEX, \
+            .free_threaded = _Py_Debug_Free_Threaded, \
             .runtime_state = { \
+                .size = sizeof(_PyRuntimeState), \
                 .finalizing = offsetof(_PyRuntimeState, _finalizing), \
                 .interpreters_head = offsetof(_PyRuntimeState, interpreters.head), \
             }, \
             .interpreter_state = { \
+                .size = sizeof(PyInterpreterState), \
+                .id = offsetof(PyInterpreterState, id), \
                 .next = offsetof(PyInterpreterState, next), \
                 .threads_head = offsetof(PyInterpreterState, threads.head), \
                 .gc = offsetof(PyInterpreterState, gc), \
@@ -46,18 +50,24 @@ extern PyTypeObject _PyExc_MemoryError;
                 .sysdict = offsetof(PyInterpreterState, sysdict), \
                 .builtins = offsetof(PyInterpreterState, builtins), \
                 .ceval_gil = offsetof(PyInterpreterState, ceval.gil), \
+                .gil_runtime_state = offsetof(PyInterpreterState, _gil), \
+                .gil_runtime_state_enabled = _Py_Debug_gilruntimestate_enabled, \
                 .gil_runtime_state_locked = offsetof(PyInterpreterState, _gil.locked), \
                 .gil_runtime_state_holder = offsetof(PyInterpreterState, _gil.last_holder), \
             }, \
             .thread_state = { \
+                .size = sizeof(PyThreadState), \
                 .prev = offsetof(PyThreadState, prev), \
                 .next = offsetof(PyThreadState, next), \
                 .interp = offsetof(PyThreadState, interp), \
                 .current_frame = offsetof(PyThreadState, current_frame), \
                 .thread_id = offsetof(PyThreadState, thread_id), \
                 .native_thread_id = offsetof(PyThreadState, native_thread_id), \
+                .datastack_chunk = offsetof(PyThreadState, datastack_chunk), \
+                .status = offsetof(PyThreadState, _status), \
             }, \
             .interpreter_frame = { \
+                .size = sizeof(_PyInterpreterFrame), \
                 .previous = offsetof(_PyInterpreterFrame, previous), \
                 .executable = offsetof(_PyInterpreterFrame, f_executable), \
                 .instr_ptr = offsetof(_PyInterpreterFrame, instr_ptr), \
@@ -65,8 +75,10 @@ extern PyTypeObject _PyExc_MemoryError;
                 .owner = offsetof(_PyInterpreterFrame, owner), \
             }, \
             .code_object = { \
+                .size = sizeof(PyCodeObject), \
                 .filename = offsetof(PyCodeObject, co_filename), \
                 .name = offsetof(PyCodeObject, co_name), \
+                .qualname = offsetof(PyCodeObject, co_qualname), \
                 .linetable = offsetof(PyCodeObject, co_linetable), \
                 .firstlineno = offsetof(PyCodeObject, co_firstlineno), \
                 .argcount = offsetof(PyCodeObject, co_argcount), \
@@ -75,19 +87,54 @@ extern PyTypeObject _PyExc_MemoryError;
                 .co_code_adaptive = offsetof(PyCodeObject, co_code_adaptive), \
             }, \
             .pyobject = { \
+                .size = sizeof(PyObject), \
                 .ob_type = offsetof(PyObject, ob_type), \
             }, \
             .type_object = { \
+                .size = sizeof(PyTypeObject), \
                 .tp_name = offsetof(PyTypeObject, tp_name), \
+                .tp_repr = offsetof(PyTypeObject, tp_repr), \
+                .tp_flags = offsetof(PyTypeObject, tp_flags), \
             }, \
             .tuple_object = { \
+                .size = sizeof(PyTupleObject), \
                 .ob_item = offsetof(PyTupleObject, ob_item), \
+                .ob_size = offsetof(PyTupleObject, ob_base.ob_size), \
+            }, \
+            .list_object = { \
+                .size = sizeof(PyListObject), \
+                .ob_item = offsetof(PyListObject, ob_item), \
+                .ob_size = offsetof(PyListObject, ob_base.ob_size), \
+            }, \
+            .dict_object = { \
+                .size = sizeof(PyDictObject), \
+                .ma_keys = offsetof(PyDictObject, ma_keys), \
+                .ma_values = offsetof(PyDictObject, ma_values), \
+            }, \
+            .float_object = { \
+                .size = sizeof(PyFloatObject), \
+                .ob_fval = offsetof(PyFloatObject, ob_fval), \
+            }, \
+            .long_object = { \
+                .size = sizeof(PyLongObject), \
+                .lv_tag = offsetof(PyLongObject, long_value.lv_tag), \
+                .ob_digit = offsetof(PyLongObject, long_value.ob_digit), \
+            }, \
+            .bytes_object = { \
+                .size = sizeof(PyBytesObject), \
+                .ob_size = offsetof(PyBytesObject, ob_base.ob_size), \
+                .ob_sval = offsetof(PyBytesObject, ob_sval), \
             }, \
             .unicode_object = { \
+                .size = sizeof(PyUnicodeObject), \
                 .state = offsetof(PyUnicodeObject, _base._base.state), \
                 .length = offsetof(PyUnicodeObject, _base._base.length), \
                 .asciiobject_size = sizeof(PyASCIIObject), \
             }, \
+            .gc = { \
+                .size = sizeof(struct _gc_runtime_state), \
+                .collecting = offsetof(struct _gc_runtime_state, collecting), \
+            }, \
         }, \
         .allocators = { \
             .standard = _pymem_allocators_standard_INIT(runtime), \
@@ -181,12 +228,12 @@ extern PyTypeObject _PyExc_MemoryError;
         }, \
         .gc = { \
             .enabled = 1, \
-            .young = { .threshold = 2000, }, \
-            .old = { \
+            .generations = { \
+                /* .head is set in _PyGC_InitState(). */ \
+                { .threshold = 2000, }, \
+                { .threshold = 10, }, \
                 { .threshold = 10, }, \
-                { .threshold = 0, }, \
             }, \
-            .work_to_do = -5000, \
         }, \
         .qsbr = { \
             .wr_seq = QSBR_INITIAL, \
diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
index 508da40c53422d..19a6b9b1537d51 100644
--- a/Include/internal/pycore_runtime_init_generated.h
+++ b/Include/internal/pycore_runtime_init_generated.h
@@ -546,21 +546,17 @@ extern "C" {
     INIT_STR(anon_setcomp, "<setcomp>"), \
     INIT_STR(anon_string, "<string>"), \
     INIT_STR(anon_unknown, "<unknown>"), \
-    INIT_STR(close_br, "}"), \
     INIT_STR(dbl_close_br, "}}"), \
     INIT_STR(dbl_open_br, "{{"), \
     INIT_STR(dbl_percent, "%%"), \
     INIT_STR(defaults, ".defaults"), \
-    INIT_STR(dot, "."), \
     INIT_STR(dot_locals, ".<locals>"), \
     INIT_STR(empty, ""), \
     INIT_STR(generic_base, ".generic_base"), \
     INIT_STR(json_decoder, "json.decoder"), \
     INIT_STR(kwdefaults, ".kwdefaults"), \
     INIT_STR(list_err, "list index out of range"), \
-    INIT_STR(newline, "\n"), \
-    INIT_STR(open_br, "{"), \
-    INIT_STR(percent, "%"), \
+    INIT_STR(str_replace_inf, "1e309"), \
     INIT_STR(type_params, ".type_params"), \
     INIT_STR(utf_8, "utf-8"), \
 }
@@ -575,7 +571,6 @@ extern "C" {
     INIT_ID(TextIOWrapper), \
     INIT_ID(True), \
     INIT_ID(WarningMessage), \
-    INIT_ID(_), \
     INIT_ID(_WindowsConsoleIO), \
     INIT_ID(__IOBase_closed), \
     INIT_ID(__abc_tpflags__), \
@@ -590,7 +585,6 @@ extern "C" {
     INIT_ID(__anext__), \
     INIT_ID(__annotations__), \
     INIT_ID(__args__), \
-    INIT_ID(__asyncio_running_event_loop__), \
     INIT_ID(__await__), \
     INIT_ID(__bases__), \
     INIT_ID(__bool__), \
@@ -769,18 +763,19 @@ extern "C" {
     INIT_ID(_lock_unlock_module), \
     INIT_ID(_loop), \
     INIT_ID(_needs_com_addref_), \
+    INIT_ID(_only_immortal), \
     INIT_ID(_pack_), \
     INIT_ID(_restype_), \
     INIT_ID(_showwarnmsg), \
     INIT_ID(_shutdown), \
     INIT_ID(_slotnames), \
+    INIT_ID(_strptime), \
     INIT_ID(_strptime_datetime), \
     INIT_ID(_swappedbytes_), \
     INIT_ID(_type_), \
     INIT_ID(_uninitialized_submodules), \
     INIT_ID(_warn_unawaited_coroutine), \
     INIT_ID(_xoptions), \
-    INIT_ID(a), \
     INIT_ID(abs_tol), \
     INIT_ID(access), \
     INIT_ID(aclose), \
@@ -804,7 +799,6 @@ extern "C" {
     INIT_ID(attribute), \
     INIT_ID(authorizer_callback), \
     INIT_ID(autocommit), \
-    INIT_ID(b), \
     INIT_ID(backtick), \
     INIT_ID(base), \
     INIT_ID(before), \
@@ -822,10 +816,10 @@ extern "C" {
     INIT_ID(byteorder), \
     INIT_ID(bytes), \
     INIT_ID(bytes_per_sep), \
-    INIT_ID(c), \
     INIT_ID(c_call), \
     INIT_ID(c_exception), \
     INIT_ID(c_return), \
+    INIT_ID(cached_datetime_module), \
     INIT_ID(cached_statements), \
     INIT_ID(cadata), \
     INIT_ID(cafile), \
@@ -877,7 +871,6 @@ extern "C" {
     INIT_ID(count), \
     INIT_ID(covariant), \
     INIT_ID(cwd), \
-    INIT_ID(d), \
     INIT_ID(data), \
     INIT_ID(database), \
     INIT_ID(day), \
@@ -906,7 +899,6 @@ extern "C" {
     INIT_ID(dont_inherit), \
     INIT_ID(dst), \
     INIT_ID(dst_dir_fd), \
-    INIT_ID(e), \
     INIT_ID(eager_start), \
     INIT_ID(effective_ids), \
     INIT_ID(element_factory), \
@@ -930,7 +922,6 @@ extern "C" {
     INIT_ID(exp), \
     INIT_ID(extend), \
     INIT_ID(extra_tokens), \
-    INIT_ID(f), \
     INIT_ID(facility), \
     INIT_ID(factory), \
     INIT_ID(false), \
@@ -963,7 +954,6 @@ extern "C" {
     INIT_ID(fset), \
     INIT_ID(func), \
     INIT_ID(future), \
-    INIT_ID(g), \
     INIT_ID(generation), \
     INIT_ID(genexpr), \
     INIT_ID(get), \
@@ -977,7 +967,6 @@ extern "C" {
     INIT_ID(globals), \
     INIT_ID(groupindex), \
     INIT_ID(groups), \
-    INIT_ID(h), \
     INIT_ID(handle), \
     INIT_ID(handle_seq), \
     INIT_ID(has_location), \
@@ -1088,7 +1077,6 @@ extern "C" {
     INIT_ID(msg), \
     INIT_ID(mutex), \
     INIT_ID(mycmp), \
-    INIT_ID(n), \
     INIT_ID(n_arg), \
     INIT_ID(n_fields), \
     INIT_ID(n_sequence_fields), \
@@ -1134,7 +1122,6 @@ extern "C" {
     INIT_ID(outgoing), \
     INIT_ID(overlapped), \
     INIT_ID(owner), \
-    INIT_ID(p), \
     INIT_ID(pages), \
     INIT_ID(parent), \
     INIT_ID(password), \
@@ -1162,7 +1149,6 @@ extern "C" {
     INIT_ID(ps2), \
     INIT_ID(query), \
     INIT_ID(quotetabs), \
-    INIT_ID(r), \
     INIT_ID(raw), \
     INIT_ID(read), \
     INIT_ID(read1), \
@@ -1186,7 +1172,6 @@ extern "C" {
     INIT_ID(return), \
     INIT_ID(reverse), \
     INIT_ID(reversed), \
-    INIT_ID(s), \
     INIT_ID(salt), \
     INIT_ID(sched_priority), \
     INIT_ID(scheduler), \
@@ -1219,6 +1204,7 @@ extern "C" {
     INIT_ID(sort), \
     INIT_ID(source), \
     INIT_ID(source_traceback), \
+    INIT_ID(spam), \
     INIT_ID(src), \
     INIT_ID(src_dir_fd), \
     INIT_ID(stacklevel), \
@@ -1292,7 +1278,6 @@ extern "C" {
     INIT_ID(writable), \
     INIT_ID(write), \
     INIT_ID(write_through), \
-    INIT_ID(x), \
     INIT_ID(year), \
     INIT_ID(zdict), \
 }
diff --git a/Include/internal/pycore_symtable.h b/Include/internal/pycore_symtable.h
index 16e89f80d9d0c8..90252bf8365443 100644
--- a/Include/internal/pycore_symtable.h
+++ b/Include/internal/pycore_symtable.h
@@ -15,11 +15,23 @@ typedef enum _block_type {
     // Used for annotations if 'from __future__ import annotations' is active.
     // Annotation blocks cannot bind names and are not evaluated.
     AnnotationBlock,
-    // Used for generics and type aliases. These work mostly like functions
-    // (see PEP 695 for details). The three different blocks function identically;
-    // they are different enum entries only so that error messages can be more
-    // precise.
-    TypeVarBoundBlock, TypeAliasBlock, TypeParamBlock
+
+    // The following blocks are used for generics and type aliases. These work
+    // mostly like functions (see PEP 695 for details). The three different
+    // blocks function identically; they are different enum entries only so
+    // that error messages can be more precise.
+
+    // The block to enter when processing a "type" (PEP 695) construction,
+    // e.g., "type MyGeneric[T] = list[T]".
+    TypeAliasBlock,
+    // The block to enter when processing a "generic" (PEP 695) object,
+    // e.g., "def foo[T](): pass" or "class A[T]: pass".
+    TypeParametersBlock,
+    // The block to enter when processing the bound, the constraint tuple
+    // or the default value of a single "type variable" in the formal sense,
+    // i.e., a TypeVar, a TypeVarTuple or a ParamSpec object (the latter two
+    // do not support a bound or a constraint tuple).
+    TypeVariableBlock,
 } _Py_block_ty;
 
 typedef enum _comprehension_type {
@@ -81,7 +93,17 @@ typedef struct _symtable_entry {
     PyObject *ste_varnames;  /* list of function parameters */
     PyObject *ste_children;  /* list of child blocks */
     PyObject *ste_directives;/* locations of global and nonlocal statements */
+    PyObject *ste_mangled_names; /* set of names for which mangling should be applied */
+
     _Py_block_ty ste_type;
+    // Optional string set by symtable.c and used when reporting errors.
+    // The content of that string is a description of the current "context".
+    //
+    // For instance, if we are processing the default value of the type
+    // variable "T" in "def foo[T = int](): pass", `ste_scope_info` is
+    // set to "a TypeVar default".
+    const char *ste_scope_info;
+
     int ste_nested;      /* true if block is nested */
     unsigned ste_free : 1;        /* true if block has free variables */
     unsigned ste_child_free : 1;  /* true if a child block has free vars,
@@ -128,6 +150,7 @@ extern PySTEntryObject* _PySymtable_Lookup(struct symtable *, void *);
 
 extern void _PySymtable_Free(struct symtable *);
 
+extern PyObject *_Py_MaybeMangle(PyObject *privateobj, PySTEntryObject *ste, PyObject *name);
 extern PyObject* _Py_Mangle(PyObject *p, PyObject *name);
 
 /* Flags for def-use information */
diff --git a/Include/internal/pycore_time.h b/Include/internal/pycore_time.h
index 15806552e0a384..205ac5d3781ddd 100644
--- a/Include/internal/pycore_time.h
+++ b/Include/internal/pycore_time.h
@@ -6,7 +6,7 @@
 // Time formats:
 //
 // * Seconds.
-// * Seconds as a floating point number (C double).
+// * Seconds as a floating-point number (C double).
 // * Milliseconds (10^-3 seconds).
 // * Microseconds (10^-6 seconds).
 // * 100 nanoseconds (10^-7 seconds), used on Windows.
diff --git a/Include/internal/pycore_tracemalloc.h b/Include/internal/pycore_tracemalloc.h
index 7ddc5bac5d10af..f70d47074f813c 100644
--- a/Include/internal/pycore_tracemalloc.h
+++ b/Include/internal/pycore_tracemalloc.h
@@ -144,7 +144,7 @@ extern PyObject* _PyTraceMalloc_GetTraces(void);
 extern PyObject* _PyTraceMalloc_GetObjectTraceback(PyObject *obj);
 
 /* Initialize tracemalloc */
-extern int _PyTraceMalloc_Init(void);
+extern PyStatus _PyTraceMalloc_Init(void);
 
 /* Start tracemalloc */
 extern int _PyTraceMalloc_Start(int max_nframe);
diff --git a/Include/internal/pycore_tstate.h b/Include/internal/pycore_tstate.h
index 733e3172a1c0ff..1ed5b1d826aaa4 100644
--- a/Include/internal/pycore_tstate.h
+++ b/Include/internal/pycore_tstate.h
@@ -14,13 +14,6 @@ extern "C" {
 #include "pycore_qsbr.h"          // struct qsbr
 
 
-static inline void
-_PyThreadState_SetWhence(PyThreadState *tstate, int whence)
-{
-    tstate->_whence = whence;
-}
-
-
 // Every PyThreadState is actually allocated as a _PyThreadStateImpl. The
 // PyThreadState fields are exposed as part of the C API, although most fields
 // are intended to be private. The _PyThreadStateImpl fields not exposed.
@@ -28,6 +21,8 @@ typedef struct _PyThreadStateImpl {
     // semi-public fields are in PyThreadState.
     PyThreadState base;
 
+    PyObject *asyncio_running_loop; // Strong reference
+
     struct _qsbr_thread_state *qsbr;  // only used by free-threaded build
     struct llist_node mem_free_queue; // delayed free queue
 
diff --git a/Include/internal/pycore_typeobject.h b/Include/internal/pycore_typeobject.h
index 7e533bd138469b..a6562f7f9ba74e 100644
--- a/Include/internal/pycore_typeobject.h
+++ b/Include/internal/pycore_typeobject.h
@@ -17,11 +17,25 @@ extern "C" {
 #define _Py_TYPE_BASE_VERSION_TAG (2<<16)
 #define _Py_MAX_GLOBAL_TYPE_VERSION_TAG (_Py_TYPE_BASE_VERSION_TAG - 1)
 
+/* For now we hard-code this to a value for which we are confident
+   all the static builtin types will fit (for all builds). */
+#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES 200
+#define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10
+#define _Py_MAX_MANAGED_STATIC_TYPES \
+    (_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES + _Py_MAX_MANAGED_STATIC_EXT_TYPES)
+
 struct _types_runtime_state {
     /* Used to set PyTypeObject.tp_version_tag for core static types. */
     // bpo-42745: next_version_tag remains shared by all interpreters
     // because of static types.
     unsigned int next_version_tag;
+
+    struct {
+        struct {
+            PyTypeObject *type;
+            int64_t interp_count;
+        } types[_Py_MAX_MANAGED_STATIC_TYPES];
+    } managed_static;
 };
 
 
@@ -42,12 +56,9 @@ struct type_cache {
     struct type_cache_entry hashtable[1 << MCACHE_SIZE_EXP];
 };
 
-/* For now we hard-code this to a value for which we are confident
-   all the static builtin types will fit (for all builds). */
-#define _Py_MAX_STATIC_BUILTIN_TYPES 200
-
 typedef struct {
     PyTypeObject *type;
+    int isbuiltin;
     int readying;
     int ready;
     // XXX tp_dict can probably be statically allocated,
@@ -59,7 +70,7 @@ typedef struct {
        are also some diagnostic uses for the list of weakrefs,
        so we still keep it. */
     PyObject *tp_weaklist;
-} static_builtin_state;
+} managed_static_type_state;
 
 struct types_state {
     /* Used to set PyTypeObject.tp_version_tag.
@@ -105,8 +116,16 @@ struct types_state {
        num_builtins_initialized is incremented once for each static
        builtin type.  Once initialization is over for a subinterpreter,
        the value will be the same as for all other interpreters.  */
-    size_t num_builtins_initialized;
-    static_builtin_state builtins[_Py_MAX_STATIC_BUILTIN_TYPES];
+    struct {
+        size_t num_initialized;
+        managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES];
+    } builtins;
+    /* We apply a similar strategy for managed extension modules. */
+    struct {
+        size_t num_initialized;
+        size_t next_index;
+        managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_EXT_TYPES];
+    } for_extensions;
     PyMutex mutex;
 };
 
@@ -115,6 +134,7 @@ struct types_state {
 
 extern PyStatus _PyTypes_InitTypes(PyInterpreterState *);
 extern void _PyTypes_FiniTypes(PyInterpreterState *);
+extern void _PyTypes_FiniExtTypes(PyInterpreterState *interp);
 extern void _PyTypes_Fini(PyInterpreterState *);
 extern void _PyTypes_AfterFork(void);
 
@@ -130,12 +150,31 @@ typedef struct wrapperbase pytype_slotdef;
 
 
 static inline PyObject **
-_PyStaticType_GET_WEAKREFS_LISTPTR(static_builtin_state *state)
+_PyStaticType_GET_WEAKREFS_LISTPTR(managed_static_type_state *state)
 {
     assert(state != NULL);
     return &state->tp_weaklist;
 }
 
+extern int _PyStaticType_InitBuiltin(
+    PyInterpreterState *interp,
+    PyTypeObject *type);
+extern void _PyStaticType_FiniBuiltin(
+    PyInterpreterState *interp,
+    PyTypeObject *type);
+extern void _PyStaticType_ClearWeakRefs(
+    PyInterpreterState *interp,
+    PyTypeObject *type);
+extern managed_static_type_state * _PyStaticType_GetState(
+    PyInterpreterState *interp,
+    PyTypeObject *type);
+
+// Export for '_datetime' shared extension.
+PyAPI_FUNC(int) _PyStaticType_InitForExtension(
+    PyInterpreterState *interp,
+     PyTypeObject *self);
+
+
 /* Like PyType_GetModuleState, but skips verification
  * that type is a heap type with an associated module */
 static inline void *
@@ -151,11 +190,6 @@ _PyType_GetModuleState(PyTypeObject *type)
 }
 
 
-extern int _PyStaticType_InitBuiltin(PyInterpreterState *, PyTypeObject *type);
-extern static_builtin_state * _PyStaticType_GetState(PyInterpreterState *, PyTypeObject *);
-extern void _PyStaticType_ClearWeakRefs(PyInterpreterState *, PyTypeObject *type);
-extern void _PyStaticType_Dealloc(PyInterpreterState *, PyTypeObject *);
-
 // Export for 'math' shared extension, used via _PyType_IsReady() static inline
 // function
 PyAPI_FUNC(PyObject *) _PyType_GetDict(PyTypeObject *);
@@ -196,6 +230,7 @@ extern PyObject* _PyType_GetFullyQualifiedName(PyTypeObject *type, char sep);
 // self->tp_flags = (self->tp_flags & ~mask) | flags;
 extern void _PyType_SetFlags(PyTypeObject *self, unsigned long mask,
                              unsigned long flags);
+extern int _PyType_AddMethod(PyTypeObject *, PyMethodDef *);
 
 // Like _PyType_SetFlags(), but apply the operation to self and any of its
 // subclasses without Py_TPFLAGS_IMMUTABLETYPE set.
diff --git a/Include/internal/pycore_typevarobject.h b/Include/internal/pycore_typevarobject.h
index 80a2daf4efc16a..a368edebd622a1 100644
--- a/Include/internal/pycore_typevarobject.h
+++ b/Include/internal/pycore_typevarobject.h
@@ -18,6 +18,7 @@ extern int _Py_initialize_generic(PyInterpreterState *);
 extern void _Py_clear_generic_types(PyInterpreterState *);
 
 extern PyTypeObject _PyTypeAlias_Type;
+extern PyTypeObject _PyNoDefault_Type;
 extern PyObject _Py_NoDefaultStruct;
 
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_unicodeobject.h b/Include/internal/pycore_unicodeobject.h
index fea5ceea0954f4..173c0868cf17bc 100644
--- a/Include/internal/pycore_unicodeobject.h
+++ b/Include/internal/pycore_unicodeobject.h
@@ -12,6 +12,7 @@ extern "C" {
 #include "pycore_fileutils.h"     // _Py_error_handler
 #include "pycore_identifier.h"    // _Py_Identifier
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
+#include "pycore_global_objects.h"  // _Py_SINGLETON
 
 /* --- Characters Type APIs ----------------------------------------------- */
 
@@ -33,6 +34,7 @@ PyAPI_FUNC(int) _PyUnicode_CheckConsistency(
 
 PyAPI_FUNC(void) _PyUnicode_ExactDealloc(PyObject *op);
 extern Py_ssize_t _PyUnicode_InternedSize(void);
+extern Py_ssize_t _PyUnicode_InternedSize_Immortal(void);
 
 // Get a copy of a Unicode string.
 // Export for '_datetime' shared extension.
@@ -275,6 +277,18 @@ extern void _PyUnicode_FiniTypes(PyInterpreterState *);
 
 extern PyTypeObject _PyUnicodeASCIIIter_Type;
 
+/* --- Interning ---------------------------------------------------------- */
+
+// All these are "ref-neutral", like the public PyUnicode_InternInPlace.
+
+// Explicit interning routines:
+PyAPI_FUNC(void) _PyUnicode_InternMortal(PyInterpreterState *interp, PyObject **);
+PyAPI_FUNC(void) _PyUnicode_InternImmortal(PyInterpreterState *interp, PyObject **);
+// Left here to help backporting:
+PyAPI_FUNC(void) _PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p);
+// Only for singletons in the _PyRuntime struct:
+extern void _PyUnicode_InternStatic(PyInterpreterState *interp, PyObject **);
+
 /* --- Other API ---------------------------------------------------------- */
 
 struct _Py_unicode_runtime_ids {
@@ -311,7 +325,6 @@ struct _Py_unicode_state {
     struct _Py_unicode_ids ids;
 };
 
-extern void _PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p);
 extern void _PyUnicode_ClearInterned(PyInterpreterState *interp);
 
 // Like PyUnicode_AsUTF8(), but check for embedded null characters.
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
index cc2fc15ac5cabf..7f6b6e07984a9a 100644
--- a/Include/internal/pycore_unicodeobject_generated.h
+++ b/Include/internal/pycore_unicodeobject_generated.h
@@ -13,2192 +13,2965 @@ static inline void
 _PyUnicode_InitStaticStrings(PyInterpreterState *interp) {
     PyObject *string;
     string = &_Py_ID(CANCELLED);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(FINISHED);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(False);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(JSONDecodeError);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(PENDING);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(Py_Repr);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(TextIOWrapper);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(True);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(WarningMessage);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(_);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_WindowsConsoleIO);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__IOBase_closed);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__abc_tpflags__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__abs__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__abstractmethods__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__add__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__aenter__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__aexit__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__aiter__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__all__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__and__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__anext__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__annotations__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__args__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(__asyncio_running_event_loop__);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__await__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__bases__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__bool__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__buffer__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__build_class__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__builtins__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__bytes__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__call__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__cantrace__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__class__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__class_getitem__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__classcell__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__classdict__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__classdictcell__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__complex__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__contains__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__copy__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ctypes_from_outparam__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__del__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__delattr__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__delete__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__delitem__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__dict__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__dictoffset__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__dir__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__divmod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__doc__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__enter__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__eq__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__exit__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__file__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__firstlineno__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__float__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__floordiv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__format__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__fspath__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ge__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__get__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getattr__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getattribute__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getinitargs__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getitem__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getnewargs__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getnewargs_ex__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__getstate__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__gt__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__hash__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__iadd__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__iand__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ifloordiv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ilshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__imatmul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__imod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__import__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__imul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__index__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__init__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__init_subclass__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__instancecheck__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__int__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__invert__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ior__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ipow__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__irshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__isabstractmethod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__isub__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__iter__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__itruediv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ixor__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__le__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__len__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__length_hint__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__lltrace__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__loader__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__lshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__lt__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__main__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__match_args__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__matmul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__missing__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__mod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__module__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__mro_entries__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__mul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__name__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ne__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__neg__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__new__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__newobj__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__newobj_ex__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__next__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__notes__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__or__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__orig_class__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__origin__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__package__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__parameters__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__path__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__pos__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__pow__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__prepare__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__qualname__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__radd__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rand__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rdivmod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__reduce__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__reduce_ex__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__release_buffer__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__repr__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__reversed__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rfloordiv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rlshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rmatmul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rmod__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rmul__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__ror__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__round__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rpow__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rrshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rshift__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rsub__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rtruediv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__rxor__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__set__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__set_name__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__setattr__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__setitem__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__setstate__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__sizeof__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__slotnames__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__slots__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__spec__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__static_attributes__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__str__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__sub__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__subclasscheck__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__subclasshook__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__truediv__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__trunc__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__type_params__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__typing_is_unpacked_typevartuple__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__typing_prepare_subst__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__typing_subst__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__typing_unpacked_tuple_args__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__warningregistry__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__weaklistoffset__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__weakref__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(__xor__);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_abc_impl);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_abstract_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_active);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_align_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_annotation);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_anonymous_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_argtypes_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_as_parameter_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_asyncio_future_blocking);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_blksize);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_bootstrap);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_check_retval_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_dealloc_warn);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_feature_version);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_field_types);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_fields_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_finalizing);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_find_and_load);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_fix_up_module);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_flags_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_get_sourcefile);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_handle_fromlist);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_initializing);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_io);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_is_text_encoding);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_length_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_limbo);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_lock_unlock_module);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_loop);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_needs_com_addref_);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(_only_immortal);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_pack_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_restype_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_showwarnmsg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_shutdown);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_slotnames);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(_strptime);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_strptime_datetime);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_swappedbytes_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_type_);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_uninitialized_submodules);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_warn_unawaited_coroutine);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(_xoptions);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(a);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(abs_tol);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(access);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(aclose);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(add);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(add_done_callback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(after_in_child);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(after_in_parent);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(aggregate_class);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(alias);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(allow_code);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(append);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(arg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(argdefs);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(args);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(arguments);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(argv);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(as_integer_ratio);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(asend);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ast);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(athrow);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(attribute);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(authorizer_callback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(autocommit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(b);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(backtick);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(base);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(before);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(big);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(binary_form);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(block);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(bound);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(buffer);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(buffer_callback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(buffer_size);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(buffering);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(buffers);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(bufsize);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(builtins);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(byteorder);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(bytes);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(bytes_per_sep);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(c);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(c_call);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(c_exception);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(c_return);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(cached_datetime_module);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cached_statements);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cadata);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cafile);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(call);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(call_exception_handler);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(call_soon);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(callback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cancel);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(capath);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(category);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cb_type);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(certfile);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(check_same_thread);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(clear);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(close);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(closed);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(closefd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(closure);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_argcount);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_cellvars);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_code);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_consts);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_exceptiontable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_filename);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_firstlineno);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_flags);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_freevars);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_kwonlyargcount);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_linetable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_names);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_nlocals);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_posonlyargcount);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_qualname);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_stacksize);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(co_varnames);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(code);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(col_offset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(command);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(comment_factory);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(compile_mode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(consts);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(context);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(contravariant);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cookie);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(copy);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(copyreg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(coro);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(count);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(covariant);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(cwd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(d);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(data);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(database);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(day);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(decode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(decoder);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(default);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(defaultaction);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(delete);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(depth);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(desired_access);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(detect_types);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(deterministic);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(device);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dict);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dictcomp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(difference_update);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(digest);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(digest_size);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(digestmod);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dir_fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(discard);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dispatch_table);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(displayhook);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dklen);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(doc);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dont_inherit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dst);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(dst_dir_fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(e);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(eager_start);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(effective_ids);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(element_factory);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(encode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(encoding);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(end);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(end_col_offset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(end_lineno);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(end_offset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(endpos);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(entrypoint);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(env);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(errors);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(event);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(eventmask);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(exc_type);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(exc_value);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(excepthook);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(exception);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(existing_file_name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(exp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(extend);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(extra_tokens);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(f);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(facility);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(factory);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(false);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(family);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fanout);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fd2);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fdel);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fget);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(file);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(file_actions);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(filename);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fileno);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(filepath);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fillvalue);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(filter);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(filters);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(final);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(find_class);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fix_imports);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(flags);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(flush);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fold);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(follow_symlinks);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(format);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(from_param);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fromlist);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fromtimestamp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fromutc);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(fset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(func);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(future);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(g);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(generation);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(genexpr);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(get);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(get_debug);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(get_event_loop);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(get_loop);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(get_source);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(getattr);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(getstate);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(gid);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(globals);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(groupindex);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(groups);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(h);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(handle);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(handle_seq);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(has_location);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(hash_name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(header);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(headers);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(hi);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(hook);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(hour);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ident);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(identity_hint);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ignore);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(imag);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(importlib);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(in_fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(incoming);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(indexgroup);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(inf);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(infer_variance);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(inherit_handle);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(inheritable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initial);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initial_bytes);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initial_owner);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initial_state);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initial_value);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(initval);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(inner_size);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(input);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(insert_comments);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(insert_pis);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(instructions);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(intern);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(intersection);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(interval);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(is_running);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(isatty);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(isinstance);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(isoformat);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(isolation_level);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(istext);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(item);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(items);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(iter);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(iterable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(iterations);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(join);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(jump);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(keepends);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(key);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(keyfile);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(keys);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(kind);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(kw);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(kw1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(kw2);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(kwdefaults);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(label);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(lambda);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last_exc);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last_node);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last_traceback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last_type);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(last_value);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(latin1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(leaf_size);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(len);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(length);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(level);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(limit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(line);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(line_buffering);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(lineno);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(listcomp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(little);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(lo);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(locale);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(locals);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(logoption);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(loop);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(manual_reset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mapping);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(match);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(max_length);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxdigits);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxevents);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxlen);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxmem);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxsplit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(maxvalue);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(memLevel);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(memlimit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(message);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(metaclass);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(metadata);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(method);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(microsecond);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(milliseconds);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(minute);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mod);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(module);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(module_globals);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(modules);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(month);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mro);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(msg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mutex);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(mycmp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(n);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(n_arg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(n_fields);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(n_sequence_fields);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(n_unnamed_fields);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(name_from);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(namespace_separator);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(namespaces);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(narg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ndigits);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(nested);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(new_file_name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(new_limit);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(newline);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(newlines);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(next);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(nlocals);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(node_depth);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(node_offset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ns);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(nstype);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(nt);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(null);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(number);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(obj);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(object);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(offset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(offset_dst);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(offset_src);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(on_type_read);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(onceregistry);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(only_keys);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(oparg);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(opcode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(open);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(opener);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(operation);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(optimize);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(options);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(order);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(origin);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(out_fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(outgoing);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(overlapped);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(owner);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(p);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pages);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(parent);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(password);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(path);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pattern);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(peek);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(persistent_id);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(persistent_load);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(person);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pi_factory);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pid);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(policy);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pos);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pos1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(pos2);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(posix);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(print_file_and_line);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(priority);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(progress);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(progress_handler);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(progress_routine);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(proto);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(protocol);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ps1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(ps2);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(query);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(quotetabs);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(r);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(raw);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(read);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(read1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readall);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readinto);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readinto1);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readline);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(readonly);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(real);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reducer_override);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(registry);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(rel_tol);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(release);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reload);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(repl);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(replace);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reserved);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reset);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(resetids);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(return);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reverse);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(reversed);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(s);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(salt);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sched_priority);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(scheduler);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(second);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(security_attributes);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(seek);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(seekable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(selectors);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(self);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(send);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sep);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sequence);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(server_hostname);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(server_side);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(session);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setcomp);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setpgroup);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setsid);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setsigdef);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setsigmask);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(setstate);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(shape);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(show_cmd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(signed);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(size);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sizehint);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(skip_file_prefixes);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sleep);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sock);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sort);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(source);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(source_traceback);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_ID(spam);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(src);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(src_dir_fd);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(stacklevel);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(start);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(statement);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(status);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(stderr);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(stdin);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(stdout);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(step);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(steps);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(store_name);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(strategy);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(strftime);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(strict);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(strict_mode);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(string);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(sub_key);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(symmetric_difference_update);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tabsize);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tag);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(target);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(target_is_directory);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(task);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tb_frame);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tb_lasti);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tb_lineno);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tb_next);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tell);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(template);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(term);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(text);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(threading);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(throw);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(timeout);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(times);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(timetuple);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(top);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(trace_callback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(traceback);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(trailers);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(translate);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(true);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(truncate);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(twice);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(txt);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(type);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(type_params);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tz);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tzinfo);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(tzname);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(uid);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(unlink);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(unraisablehook);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(uri);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(usedforsecurity);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(value);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(values);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(version);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(volume);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(wait_all);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(warn_on_full_buffer);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(warnings);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(warnoptions);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(wbits);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(week);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(weekday);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(which);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(who);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(withdata);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(writable);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(write);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(write_through);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
-    string = &_Py_ID(x);
-    assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(year);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
     string = &_Py_ID(zdict);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(empty);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(dbl_percent);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(dot_locals);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(defaults);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(generic_base);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(kwdefaults);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(type_params);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(str_replace_inf);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_null);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_dictcomp);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_genexpr);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_lambda);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_listcomp);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_module);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_setcomp);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_string);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(anon_unknown);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(json_decoder);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(list_err);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(utf_8);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(dbl_open_br);
+    _PyUnicode_InternStatic(interp, &string);
+    assert(_PyUnicode_CheckConsistency(string, 1));
+    assert(PyUnicode_GET_LENGTH(string) != 1);
+    string = &_Py_STR(dbl_close_br);
+    _PyUnicode_InternStatic(interp, &string);
     assert(_PyUnicode_CheckConsistency(string, 1));
-    _PyUnicode_InternInPlace(interp, &string);
+    assert(PyUnicode_GET_LENGTH(string) != 1);
 }
 /* End auto-generated code */
 #ifdef __cplusplus
diff --git a/Include/internal/pycore_uop_metadata.h b/Include/internal/pycore_uop_metadata.h
index 470e95e2b3b041..02ffc769c180ea 100644
--- a/Include/internal/pycore_uop_metadata.h
+++ b/Include/internal/pycore_uop_metadata.h
@@ -52,10 +52,10 @@ const uint16_t _PyUop_Flags[MAX_UOP_ID+1] = {
     [_UNARY_NOT] = HAS_PURE_FLAG,
     [_TO_BOOL] = HAS_ERROR_FLAG | HAS_ESCAPES_FLAG,
     [_TO_BOOL_BOOL] = HAS_EXIT_FLAG,
-    [_TO_BOOL_INT] = HAS_EXIT_FLAG,
+    [_TO_BOOL_INT] = HAS_EXIT_FLAG | HAS_ESCAPES_FLAG,
     [_TO_BOOL_LIST] = HAS_EXIT_FLAG,
     [_TO_BOOL_NONE] = HAS_EXIT_FLAG,
-    [_TO_BOOL_STR] = HAS_EXIT_FLAG,
+    [_TO_BOOL_STR] = HAS_EXIT_FLAG | HAS_ESCAPES_FLAG,
     [_REPLACE_WITH_TRUE] = 0,
     [_UNARY_INVERT] = HAS_ERROR_FLAG | HAS_ESCAPES_FLAG,
     [_GUARD_BOTH_INT] = HAS_EXIT_FLAG,
@@ -107,7 +107,6 @@ const uint16_t _PyUop_Flags[MAX_UOP_ID+1] = {
     [_STORE_GLOBAL] = HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG,
     [_DELETE_GLOBAL] = HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG | HAS_ESCAPES_FLAG,
     [_LOAD_LOCALS] = HAS_ERROR_FLAG | HAS_ESCAPES_FLAG,
-    [_LOAD_FROM_DICT_OR_GLOBALS] = HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ERROR_NO_POP_FLAG | HAS_ESCAPES_FLAG,
     [_LOAD_GLOBAL] = HAS_ARG_FLAG | HAS_NAME_FLAG | HAS_ERROR_FLAG | HAS_ESCAPES_FLAG,
     [_GUARD_GLOBALS_VERSION] = HAS_DEOPT_FLAG,
     [_GUARD_BUILTINS_VERSION] = HAS_DEOPT_FLAG,
@@ -438,7 +437,6 @@ const char *const _PyOpcode_uop_name[MAX_UOP_ID+1] = {
     [_LOAD_FAST_CHECK] = "_LOAD_FAST_CHECK",
     [_LOAD_FAST_LOAD_FAST] = "_LOAD_FAST_LOAD_FAST",
     [_LOAD_FROM_DICT_OR_DEREF] = "_LOAD_FROM_DICT_OR_DEREF",
-    [_LOAD_FROM_DICT_OR_GLOBALS] = "_LOAD_FROM_DICT_OR_GLOBALS",
     [_LOAD_GLOBAL] = "_LOAD_GLOBAL",
     [_LOAD_GLOBAL_BUILTINS] = "_LOAD_GLOBAL_BUILTINS",
     [_LOAD_GLOBAL_MODULE] = "_LOAD_GLOBAL_MODULE",
@@ -690,8 +688,6 @@ int _PyUop_num_popped(int opcode, int oparg)
             return 0;
         case _LOAD_LOCALS:
             return 0;
-        case _LOAD_FROM_DICT_OR_GLOBALS:
-            return 1;
         case _LOAD_GLOBAL:
             return 0;
         case _GUARD_GLOBALS_VERSION:
diff --git a/Include/internal/pycore_warnings.h b/Include/internal/pycore_warnings.h
index 114796df42b2b6..f9f6559312f4ef 100644
--- a/Include/internal/pycore_warnings.h
+++ b/Include/internal/pycore_warnings.h
@@ -14,7 +14,7 @@ struct _warnings_runtime_state {
     PyObject *filters;  /* List */
     PyObject *once_registry;  /* Dict */
     PyObject *default_action; /* String */
-    struct _PyMutex mutex;
+    PyMutex mutex;
     long filters_version;
 };
 
diff --git a/Include/internal/pycore_weakref.h b/Include/internal/pycore_weakref.h
index e057a27340f718..94aadb2c1547dd 100644
--- a/Include/internal/pycore_weakref.h
+++ b/Include/internal/pycore_weakref.h
@@ -109,9 +109,7 @@ extern Py_ssize_t _PyWeakref_GetWeakrefCount(PyObject *obj);
 
 // Clear all the weak references to obj but leave their callbacks uncalled and
 // intact.
-extern void _PyWeakref_ClearWeakRefsExceptCallbacks(PyObject *obj);
-
-extern void _PyWeakref_ClearRef(PyWeakReference *self);
+extern void _PyWeakref_ClearWeakRefsNoCallbacks(PyObject *obj);
 
 PyAPI_FUNC(int) _PyWeakref_IsDead(PyObject *weakref);
 
diff --git a/Include/lock.h b/Include/lock.h
new file mode 100644
index 00000000000000..782b9dbc70d056
--- /dev/null
+++ b/Include/lock.h
@@ -0,0 +1,16 @@
+#ifndef Py_LOCK_H
+#define Py_LOCK_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_LOCK_H
+#  include "cpython/lock.h"
+#  undef Py_CPYTHON_LOCK_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_LOCK_H */
diff --git a/Include/modsupport.h b/Include/modsupport.h
index ea4c0fce9f4562..af995f567b004c 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -134,6 +134,12 @@ PyAPI_FUNC(PyObject *) PyModule_FromDefAndSpec2(PyModuleDef *def,
 
 #endif /* New in 3.5 */
 
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_MODSUPPORT_H
+#  include "cpython/modsupport.h"
+#  undef Py_CPYTHON_MODSUPPORT_H
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Include/object.h b/Include/object.h
index 9132784628a501..b53f9acfebdb0c 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -204,17 +204,13 @@ struct _object {
 // Create a shared field from a refcnt and desired flags
 #define _Py_REF_SHARED(refcnt, flags) (((refcnt) << _Py_REF_SHARED_SHIFT) + (flags))
 
-// NOTE: In non-free-threaded builds, `struct _PyMutex` is defined in
-// pycore_lock.h. See pycore_lock.h for more details.
-struct _PyMutex { uint8_t v; };
-
 struct _object {
     // ob_tid stores the thread id (or zero). It is also used by the GC and the
     // trashcan mechanism as a linked list pointer and by the GC to store the
     // computed "gc_refs" refcount.
     uintptr_t ob_tid;
     uint16_t _padding;
-    struct _PyMutex ob_mutex;   // per-object lock
+    PyMutex ob_mutex;           // per-object lock
     uint8_t ob_gc_bits;         // gc-related state
     uint32_t ob_ref_local;      // local reference count
     Py_ssize_t ob_ref_shared;   // shared (atomic) reference count
@@ -251,13 +247,19 @@ _Py_ThreadId(void)
     tid = __readfsdword(24);
 #elif defined(_MSC_VER) && defined(_M_ARM64)
     tid = __getReg(18);
+#elif defined(__MINGW32__) && defined(_M_X64)
+    tid = __readgsqword(48);
+#elif defined(__MINGW32__) && defined(_M_IX86)
+    tid = __readfsdword(24);
+#elif defined(__MINGW32__) && defined(_M_ARM64)
+    tid = __getReg(18);
 #elif defined(__i386__)
     __asm__("movl %%gs:0, %0" : "=r" (tid));  // 32-bit always uses GS
 #elif defined(__MACH__) && defined(__x86_64__)
     __asm__("movq %%gs:0, %0" : "=r" (tid));  // x86_64 macOSX uses GS
 #elif defined(__x86_64__)
    __asm__("movq %%fs:0, %0" : "=r" (tid));  // x86_64 Linux, BSD uses FS
-#elif defined(__arm__)
+#elif defined(__arm__) && __ARM_ARCH >= 7
     __asm__ ("mrc p15, 0, %0, c13, c0, 3\nbic %0, %0, #3" : "=r" (tid));
 #elif defined(__aarch64__) && defined(__APPLE__)
     __asm__ ("mrs %0, tpidrro_el0" : "=r" (tid));
@@ -695,7 +697,7 @@ given type object has a specified feature.
 /* Objects behave like an unbound method */
 #define Py_TPFLAGS_METHOD_DESCRIPTOR (1UL << 17)
 
-/* Object has up-to-date type attribute cache */
+/* Unused. Legacy flag */
 #define Py_TPFLAGS_VALID_VERSION_TAG  (1UL << 19)
 
 /* Type is abstract and cannot be instantiated */
@@ -1230,7 +1232,11 @@ PyType_HasFeature(PyTypeObject *type, unsigned long feature)
     // PyTypeObject is opaque in the limited C API
     flags = PyType_GetFlags(type);
 #else
-    flags = type->tp_flags;
+#   ifdef Py_GIL_DISABLED
+        flags = _Py_atomic_load_ulong_relaxed(&type->tp_flags);
+#   else
+        flags = type->tp_flags;
+#   endif
 #endif
     return ((flags & feature) != 0);
 }
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 179c9f50214935..59476c13eb62b2 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -18,12 +18,12 @@
 /*--start constants--*/
 #define PY_MAJOR_VERSION        3
 #define PY_MINOR_VERSION        13
-#define PY_MICRO_VERSION        0
-#define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_BETA
-#define PY_RELEASE_SERIAL       1
+#define PY_MICRO_VERSION        1
+#define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_FINAL
+#define PY_RELEASE_SERIAL       0
 
 /* Version as a string */
-#define PY_VERSION              "3.13.0b1"
+#define PY_VERSION              "3.13.1+"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
diff --git a/Include/py_curses.h b/Include/py_curses.h
index a51d9980eee401..79b1b01fcfa594 100644
--- a/Include/py_curses.h
+++ b/Include/py_curses.h
@@ -36,13 +36,21 @@
 #define NCURSES_OPAQUE 0
 #endif
 
-#ifdef HAVE_NCURSES_H
-#include <ncurses.h>
-#else
-#include <curses.h>
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
 #endif
 
-#ifdef HAVE_NCURSES_H
+#ifdef NCURSES_VERSION
 /* configure was checking <curses.h>, but we will
    use <ncurses.h>, which has some or all these features. */
 #if !defined(WINDOW_HAS_FLAGS) && \
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 68d7985dac8876..5d0028c116e2d8 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -108,7 +108,6 @@ PyAPI_DATA(PyObject *) PyExc_NotImplementedError;
 PyAPI_DATA(PyObject *) PyExc_SyntaxError;
 PyAPI_DATA(PyObject *) PyExc_IndentationError;
 PyAPI_DATA(PyObject *) PyExc_TabError;
-PyAPI_DATA(PyObject *) PyExc_IncompleteInputError;
 PyAPI_DATA(PyObject *) PyExc_ReferenceError;
 PyAPI_DATA(PyObject *) PyExc_SystemError;
 PyAPI_DATA(PyObject *) PyExc_SystemExit;
diff --git a/Include/pymacro.h b/Include/pymacro.h
index b388c2a4a663ce..e0378f9d27a048 100644
--- a/Include/pymacro.h
+++ b/Include/pymacro.h
@@ -15,11 +15,11 @@
 // MSVC makes static_assert a keyword in C11-17, contrary to the standards.
 //
 // In C++11 and C2x, static_assert is a keyword, redefining is undefined
-// behaviour. So only define if building as C (if __STDC_VERSION__ is defined),
-// not C++, and only for C11-17.
+// behaviour. So only define if building as C, not C++ (if __cplusplus is
+// not defined), and only for C11-17.
 #if !defined(static_assert) && (defined(__GNUC__) || defined(__clang__)) \
-     && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L \
-     && __STDC_VERSION__ <= 201710L
+     && !defined(__cplusplus) && defined(__STDC_VERSION__) \
+     && __STDC_VERSION__ >= 201112L && __STDC_VERSION__ <= 201710L
 #  define static_assert _Static_assert
 #endif
 
@@ -46,7 +46,8 @@
 /* Argument must be a char or an int in [-128, 127] or [0, 255]. */
 #define Py_CHARMASK(c) ((unsigned char)((c) & 0xff))
 
-#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L \
+     && !defined(__cplusplus) && !defined(_MSC_VER))
 #  define Py_BUILD_ASSERT_EXPR(cond) \
     ((void)sizeof(struct { int dummy; _Static_assert(cond, #cond); }), \
      0)
diff --git a/InternalDocs/string_interning.md b/InternalDocs/string_interning.md
new file mode 100644
index 00000000000000..358e2c070cd5fa
--- /dev/null
+++ b/InternalDocs/string_interning.md
@@ -0,0 +1,118 @@
+# String interning
+
+*Interned* strings are conceptually part of an interpreter-global
+*set* of interned strings, meaning that:
+- no two interned strings have the same content (across an interpreter);
+- two interned strings can be safely compared using pointer equality
+  (Python `is`).
+
+This is used to optimize dict and attribute lookups, among other things.
+
+Python uses two different mechanisms to intern strings: singletons and
+dynamic interning.
+
+## Singletons
+
+The 256 possible one-character latin-1 strings, which can be retrieved with
+`_Py_LATIN1_CHR(c)`, are stored in statically allocated arrays,
+`_PyRuntime.static_objects.strings.ascii` and
+`_PyRuntime.static_objects.strings.latin1`.
+
+Longer singleton strings are marked in C source with `_Py_ID` (if the string
+is a valid C identifier fragment) or `_Py_STR` (if it needs a separate
+C-compatible name.)
+These are also stored in statically allocated arrays.
+They are collected from CPython sources using `make regen-global-objects`
+(`Tools/build/generate_global_objects.py`), which generates code
+for declaration, initialization and finalization.
+
+The empty string is one of the singletons: `_Py_STR(empty)`.
+
+The three sets of singletons (`_Py_LATIN1_CHR`, `_Py_ID`, `_Py_STR`)
+are disjoint.
+If you have such a singleton, it (and no other copy) will be interned.
+
+These singletons are interned in a runtime-global lookup table,
+`_PyRuntime.cached_objects.interned_strings` (`INTERNED_STRINGS`),
+at runtime initialization, and immutable until it's torn down
+at runtime finalization.
+It is shared across threads and interpreters without any synchronization.
+
+
+## Dynamically allocated strings
+
+All other strings are allocated dynamically, and have their
+`_PyUnicode_STATE(s).statically_allocated` flag set to zero.
+When interned, such strings are added to an interpreter-wide dict,
+`PyInterpreterState.cached_objects.interned_strings`.
+
+The key and value of each entry in this dict reference the same object.
+
+
+## Immortality and reference counting
+
+Invariant: Every immortal string is interned.
+
+In practice, this means that you must not use `_Py_SetImmortal` on
+a string. (If you know it's already immortal, don't immortalize it;
+if you know it's not interned you might be immortalizing a redundant copy;
+if it's interned and mortal it needs extra processing in
+`_PyUnicode_InternImmortal`.)
+
+The converse is not true: interned strings can be mortal.
+For mortal interned strings:
+- the 2 references from the interned dict (key & value) are excluded from
+  their refcount
+- the deallocator (`unicode_dealloc`) removes the string from the interned dict
+- at shutdown, when the interned dict is cleared, the references are added back
+
+As with any type, you should only immortalize strings that will live until
+interpreter shutdown.
+We currently also immortalize strings contained in code objects and similar,
+specifically in the compiler and in `marshal`.
+These are “close enough” to immortal: even in use cases like hot reloading
+or `eval`-ing user input, the number of distinct identifiers and string
+constants expected to stay low.
+
+
+## Internal API
+
+We have the following *internal* API for interning:
+
+- `_PyUnicode_InternMortal`: just intern the string
+- `_PyUnicode_InternImmortal`: intern, and immortalize the result
+- `_PyUnicode_InternStatic`: intern a static singleton (`_Py_STR`, `_Py_ID`
+  or one-byte). Not for general use.
+
+All take an interpreter state, and a pointer to a `PyObject*` which they
+modify in place.
+
+The functions take ownership of (“steal”) the reference to their argument,
+and update the argument with a *new* reference.
+This means:
+- They're “reference neutral”.
+- They must not be called with a borrowed reference.
+
+
+## State
+
+The intern state (retrieved by `PyUnicode_CHECK_INTERNED(s)`;
+stored in `_PyUnicode_STATE(s).interned`) can be:
+
+- `SSTATE_NOT_INTERNED` (defined as 0, which is useful in a boolean context)
+- `SSTATE_INTERNED_MORTAL` (1)
+- `SSTATE_INTERNED_IMMORTAL` (2)
+- `SSTATE_INTERNED_IMMORTAL_STATIC` (3)
+
+The valid transitions between these states are:
+
+- For dynamically allocated strings:
+
+  - 0 -> 1 (`_PyUnicode_InternMortal`)
+  - 1 -> 2 or 0 -> 2 (`_PyUnicode_InternImmortal`)
+
+  Using `_PyUnicode_InternStatic` on these is an error; the other cases
+  don't change the state.
+
+- Singletons are interned (0 -> 3) at runtime init;
+  after that all interning functions don't change the state.
diff --git a/Lib/_android_support.py b/Lib/_android_support.py
index 590e85ea8c2db1..ae506f6a4b57b8 100644
--- a/Lib/_android_support.py
+++ b/Lib/_android_support.py
@@ -1,19 +1,20 @@
 import io
 import sys
-
+from threading import RLock
+from time import sleep, time
 
 # The maximum length of a log message in bytes, including the level marker and
-# tag, is defined as LOGGER_ENTRY_MAX_PAYLOAD in
-# platform/system/logging/liblog/include/log/log.h. As of API level 30, messages
-# longer than this will be be truncated by logcat. This limit has already been
-# reduced at least once in the history of Android (from 4076 to 4068 between API
-# level 23 and 26), so leave some headroom.
+# tag, is defined as LOGGER_ENTRY_MAX_PAYLOAD at
+# https://cs.android.com/android/platform/superproject/+/android-14.0.0_r1:system/logging/liblog/include/log/log.h;l=71.
+# Messages longer than this will be truncated by logcat. This limit has already
+# been reduced at least once in the history of Android (from 4076 to 4068 between
+# API level 23 and 26), so leave some headroom.
 MAX_BYTES_PER_WRITE = 4000
 
 # UTF-8 uses a maximum of 4 bytes per character, so limiting text writes to this
-# size ensures that TextIOWrapper can always avoid exceeding MAX_BYTES_PER_WRITE.
+# size ensures that we can always avoid exceeding MAX_BYTES_PER_WRITE.
 # However, if the actual number of bytes per character is smaller than that,
-# then TextIOWrapper may still join multiple consecutive text writes into binary
+# then we may still join multiple consecutive text writes into binary
 # writes containing a larger number of characters.
 MAX_CHARS_PER_WRITE = MAX_BYTES_PER_WRITE // 4
 
@@ -26,18 +27,27 @@ def init_streams(android_log_write, stdout_prio, stderr_prio):
     if sys.executable:
         return  # Not embedded in an app.
 
+    global logcat
+    logcat = Logcat(android_log_write)
+
     sys.stdout = TextLogStream(
-        android_log_write, stdout_prio, "python.stdout", errors=sys.stdout.errors)
+        stdout_prio, "python.stdout", sys.stdout.fileno())
     sys.stderr = TextLogStream(
-        android_log_write, stderr_prio, "python.stderr", errors=sys.stderr.errors)
+        stderr_prio, "python.stderr", sys.stderr.fileno())
 
 
 class TextLogStream(io.TextIOWrapper):
-    def __init__(self, android_log_write, prio, tag, **kwargs):
+    def __init__(self, prio, tag, fileno=None, **kwargs):
+        # The default is surrogateescape for stdout and backslashreplace for
+        # stderr, but in the context of an Android log, readability is more
+        # important than reversibility.
         kwargs.setdefault("encoding", "UTF-8")
-        kwargs.setdefault("line_buffering", True)
-        super().__init__(BinaryLogStream(android_log_write, prio, tag), **kwargs)
-        self._CHUNK_SIZE = MAX_BYTES_PER_WRITE
+        kwargs.setdefault("errors", "backslashreplace")
+
+        super().__init__(BinaryLogStream(prio, tag, fileno), **kwargs)
+        self._lock = RLock()
+        self._pending_bytes = []
+        self._pending_bytes_count = 0
 
     def __repr__(self):
         return f"<TextLogStream {self.buffer.tag!r}>"
@@ -52,21 +62,51 @@ def write(self, s):
         s = str.__str__(s)
 
         # We want to emit one log message per line wherever possible, so split
-        # the string before sending it to the superclass. Note that
-        # "".splitlines() == [], so nothing will be logged for an empty string.
-        for line in s.splitlines(keepends=True):
-            while line:
-                super().write(line[:MAX_CHARS_PER_WRITE])
-                line = line[MAX_CHARS_PER_WRITE:]
+        # the string into lines first. Note that "".splitlines() == [], so
+        # nothing will be logged for an empty string.
+        with self._lock:
+            for line in s.splitlines(keepends=True):
+                while line:
+                    chunk = line[:MAX_CHARS_PER_WRITE]
+                    line = line[MAX_CHARS_PER_WRITE:]
+                    self._write_chunk(chunk)
 
         return len(s)
 
+    # The size and behavior of TextIOWrapper's buffer is not part of its public
+    # API, so we handle buffering ourselves to avoid truncation.
+    def _write_chunk(self, s):
+        b = s.encode(self.encoding, self.errors)
+        if self._pending_bytes_count + len(b) > MAX_BYTES_PER_WRITE:
+            self.flush()
+
+        self._pending_bytes.append(b)
+        self._pending_bytes_count += len(b)
+        if (
+            self.write_through
+            or b.endswith(b"\n")
+            or self._pending_bytes_count > MAX_BYTES_PER_WRITE
+        ):
+            self.flush()
+
+    def flush(self):
+        with self._lock:
+            self.buffer.write(b"".join(self._pending_bytes))
+            self._pending_bytes.clear()
+            self._pending_bytes_count = 0
+
+    # Since this is a line-based logging system, line buffering cannot be turned
+    # off, i.e. a newline always causes a flush.
+    @property
+    def line_buffering(self):
+        return True
+
 
 class BinaryLogStream(io.RawIOBase):
-    def __init__(self, android_log_write, prio, tag):
-        self.android_log_write = android_log_write
+    def __init__(self, prio, tag, fileno=None):
         self.prio = prio
         self.tag = tag
+        self._fileno = fileno
 
     def __repr__(self):
         return f"<BinaryLogStream {self.tag!r}>"
@@ -85,10 +125,57 @@ def write(self, b):
 
         # Writing an empty string to the stream should have no effect.
         if b:
-            # Encode null bytes using "modified UTF-8" to avoid truncating the
-            # message. This should not affect the return value, as the caller
-            # may be expecting it to match the length of the input.
-            self.android_log_write(self.prio, self.tag,
-                                   b.replace(b"\x00", b"\xc0\x80"))
-
+            logcat.write(self.prio, self.tag, b)
         return len(b)
+
+    # This is needed by the test suite --timeout option, which uses faulthandler.
+    def fileno(self):
+        if self._fileno is None:
+            raise io.UnsupportedOperation("fileno")
+        return self._fileno
+
+
+# When a large volume of data is written to logcat at once, e.g. when a test
+# module fails in --verbose3 mode, there's a risk of overflowing logcat's own
+# buffer and losing messages. We avoid this by imposing a rate limit using the
+# token bucket algorithm, based on a conservative estimate of how fast `adb
+# logcat` can consume data.
+MAX_BYTES_PER_SECOND = 1024 * 1024
+
+# The logcat buffer size of a device can be determined by running `logcat -g`.
+# We set the token bucket size to half of the buffer size of our current minimum
+# API level, because other things on the system will be producing messages as
+# well.
+BUCKET_SIZE = 128 * 1024
+
+# https://cs.android.com/android/platform/superproject/+/android-14.0.0_r1:system/logging/liblog/include/log/log_read.h;l=39
+PER_MESSAGE_OVERHEAD = 28
+
+
+class Logcat:
+    def __init__(self, android_log_write):
+        self.android_log_write = android_log_write
+        self._lock = RLock()
+        self._bucket_level = 0
+        self._prev_write_time = time()
+
+    def write(self, prio, tag, message):
+        # Encode null bytes using "modified UTF-8" to avoid them truncating the
+        # message.
+        message = message.replace(b"\x00", b"\xc0\x80")
+
+        with self._lock:
+            now = time()
+            self._bucket_level += (
+                (now - self._prev_write_time) * MAX_BYTES_PER_SECOND)
+
+            # If the bucket level is still below zero, the clock must have gone
+            # backwards, so reset it to zero and continue.
+            self._bucket_level = max(0, min(self._bucket_level, BUCKET_SIZE))
+            self._prev_write_time = now
+
+            self._bucket_level -= PER_MESSAGE_OVERHEAD + len(tag) + len(message)
+            if self._bucket_level < 0:
+                sleep(-self._bucket_level / MAX_BYTES_PER_SECOND)
+
+            self.android_log_write(prio, tag, message)
diff --git a/Lib/_apple_support.py b/Lib/_apple_support.py
new file mode 100644
index 00000000000000..92febdcf587070
--- /dev/null
+++ b/Lib/_apple_support.py
@@ -0,0 +1,66 @@
+import io
+import sys
+
+
+def init_streams(log_write, stdout_level, stderr_level):
+    # Redirect stdout and stderr to the Apple system log. This method is
+    # invoked by init_apple_streams() (initconfig.c) if config->use_system_logger
+    # is enabled.
+    sys.stdout = SystemLog(log_write, stdout_level, errors=sys.stderr.errors)
+    sys.stderr = SystemLog(log_write, stderr_level, errors=sys.stderr.errors)
+
+
+class SystemLog(io.TextIOWrapper):
+    def __init__(self, log_write, level, **kwargs):
+        kwargs.setdefault("encoding", "UTF-8")
+        kwargs.setdefault("line_buffering", True)
+        super().__init__(LogStream(log_write, level), **kwargs)
+
+    def __repr__(self):
+        return f"<SystemLog (level {self.buffer.level})>"
+
+    def write(self, s):
+        if not isinstance(s, str):
+            raise TypeError(
+                f"write() argument must be str, not {type(s).__name__}")
+
+        # In case `s` is a str subclass that writes itself to stdout or stderr
+        # when we call its methods, convert it to an actual str.
+        s = str.__str__(s)
+
+        # We want to emit one log message per line, so split
+        # the string before sending it to the superclass.
+        for line in s.splitlines(keepends=True):
+            super().write(line)
+
+        return len(s)
+
+
+class LogStream(io.RawIOBase):
+    def __init__(self, log_write, level):
+        self.log_write = log_write
+        self.level = level
+
+    def __repr__(self):
+        return f"<LogStream (level {self.level!r})>"
+
+    def writable(self):
+        return True
+
+    def write(self, b):
+        if type(b) is not bytes:
+            try:
+                b = bytes(memoryview(b))
+            except TypeError:
+                raise TypeError(
+                    f"write() argument must be bytes-like, not {type(b).__name__}"
+                ) from None
+
+        # Writing an empty string to the stream should have no effect.
+        if b:
+            # Encode null bytes using "modified UTF-8" to avoid truncating the
+            # message. This should not affect the return value, as the caller
+            # may be expecting it to match the length of the input.
+            self.log_write(self.level, b.replace(b"\x00", b"\xc0\x80"))
+
+        return len(b)
diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py
index 601107d2d86771..aebe9c8b64ac08 100644
--- a/Lib/_collections_abc.py
+++ b/Lib/_collections_abc.py
@@ -85,6 +85,10 @@ def _f(): pass
 dict_items = type({}.items())
 ## misc ##
 mappingproxy = type(type.__dict__)
+def _get_framelocalsproxy():
+    return type(sys._getframe().f_locals)
+framelocalsproxy = _get_framelocalsproxy()
+del _get_framelocalsproxy
 generator = type((lambda: (yield))())
 ## coroutine ##
 async def _coro(): pass
@@ -836,6 +840,7 @@ def __eq__(self, other):
     __reversed__ = None
 
 Mapping.register(mappingproxy)
+Mapping.register(framelocalsproxy)
 
 
 class MappingView(Sized):
@@ -973,7 +978,7 @@ def clear(self):
 
     def update(self, other=(), /, **kwds):
         ''' D.update([E, ]**F) -> None.  Update D from mapping/iterable E and F.
-            If E present and has a .keys() method, does:     for k in E: D[k] = E[k]
+            If E present and has a .keys() method, does:     for k in E.keys(): D[k] = E[k]
             If E present and lacks .keys() method, does:     for (k, v) in E: D[k] = v
             In either case, this is followed by: for k, v in F.items(): D[k] = v
         '''
diff --git a/Lib/_colorize.py b/Lib/_colorize.py
index 845fb57a90abb8..70acfd4ad0ba8f 100644
--- a/Lib/_colorize.py
+++ b/Lib/_colorize.py
@@ -24,41 +24,44 @@ class ANSIColors:
         setattr(NoColors, attr, "")
 
 
-def get_colors(colorize: bool = False) -> ANSIColors:
-    if colorize or can_colorize():
+def get_colors(colorize: bool = False, *, file=None) -> ANSIColors:
+    if colorize or can_colorize(file=file):
         return ANSIColors()
     else:
         return NoColors
 
 
-def can_colorize() -> bool:
-    if sys.platform == "win32":
-        try:
-            import nt
+def can_colorize(*, file=None) -> bool:
+    if file is None:
+        file = sys.stdout
 
-            if not nt._supports_virtual_terminal():
-                return False
-        except (ImportError, AttributeError):
-            return False
     if not sys.flags.ignore_environment:
         if os.environ.get("PYTHON_COLORS") == "0":
             return False
         if os.environ.get("PYTHON_COLORS") == "1":
             return True
-        if "NO_COLOR" in os.environ:
-            return False
+    if os.environ.get("NO_COLOR"):
+        return False
     if not COLORIZE:
         return False
-    if not sys.flags.ignore_environment:
-        if "FORCE_COLOR" in os.environ:
-            return True
-        if os.environ.get("TERM") == "dumb":
-            return False
+    if os.environ.get("FORCE_COLOR"):
+        return True
+    if os.environ.get("TERM") == "dumb":
+        return False
 
-    if not hasattr(sys.stderr, "fileno"):
+    if not hasattr(file, "fileno"):
         return False
 
+    if sys.platform == "win32":
+        try:
+            import nt
+
+            if not nt._supports_virtual_terminal():
+                return False
+        except (ImportError, AttributeError):
+            return False
+
     try:
-        return os.isatty(sys.stderr.fileno())
+        return os.isatty(file.fileno())
     except io.UnsupportedOperation:
-        return sys.stderr.isatty()
+        return file.isatty()
diff --git a/Lib/_ios_support.py b/Lib/_ios_support.py
index db3fe23e45bca0..20467a7c2bcaeb 100644
--- a/Lib/_ios_support.py
+++ b/Lib/_ios_support.py
@@ -5,7 +5,7 @@
     # ctypes is an optional module. If it's not present, we're limited in what
     # we can tell about the system, but we don't want to prevent the module
     # from working.
-    print("ctypes isn't available; iOS system calls will not be available")
+    print("ctypes isn't available; iOS system calls will not be available", file=sys.stderr)
     objc = None
 else:
     # ctypes is available. Load the ObjC library, and wrap the objc_getClass,
@@ -13,7 +13,7 @@
     lib = util.find_library("objc")
     if lib is None:
         # Failed to load the objc library
-        raise RuntimeError("ObjC runtime library couldn't be loaded")
+        raise ImportError("ObjC runtime library couldn't be loaded")
 
     objc = cdll.LoadLibrary(lib)
     objc.objc_getClass.restype = c_void_p
diff --git a/Lib/_pydatetime.py b/Lib/_pydatetime.py
index b7d569cc41740e..e001bd3bbba4b7 100644
--- a/Lib/_pydatetime.py
+++ b/Lib/_pydatetime.py
@@ -966,6 +966,8 @@ def __new__(cls, year, month=None, day=None):
     @classmethod
     def fromtimestamp(cls, t):
         "Construct a date from a POSIX timestamp (like time.time())."
+        if t is None:
+            raise TypeError("'NoneType' object cannot be interpreted as an integer")
         y, m, d, hh, mm, ss, weekday, jday, dst = _time.localtime(t)
         return cls(y, m, d)
 
@@ -2304,7 +2306,6 @@ def __reduce__(self):
 
 def _isoweek1monday(year):
     # Helper to calculate the day number of the Monday starting week 1
-    # XXX This could be done more efficiently
     THURSDAY = 3
     firstday = _ymd2ord(year, 1, 1)
     firstweekday = (firstday + 6) % 7  # See weekday() above
diff --git a/Lib/_pydecimal.py b/Lib/_pydecimal.py
index 613123ec7b4329..ff80180a79e97a 100644
--- a/Lib/_pydecimal.py
+++ b/Lib/_pydecimal.py
@@ -97,7 +97,7 @@ class DecimalException(ArithmeticError):
 
     Used exceptions derive from this.
     If an exception derives from another exception besides this (such as
-    Underflow (Inexact, Rounded, Subnormal) that indicates that it is only
+    Underflow (Inexact, Rounded, Subnormal)) that indicates that it is only
     called if the others are present.  This isn't actually used for
     anything, though.
 
@@ -145,7 +145,7 @@ class InvalidOperation(DecimalException):
     x ** (+-)INF
     An operand is invalid
 
-    The result of the operation after these is a quiet positive NaN,
+    The result of the operation after this is a quiet positive NaN,
     except when the cause is a signaling NaN, in which case the result is
     also a quiet NaN, but with the original sign, and an optional
     diagnostic information.
@@ -424,7 +424,7 @@ def sin(x):
 # numbers.py for more detail.
 
 class Decimal(object):
-    """Floating point class for decimal arithmetic."""
+    """Floating-point class for decimal arithmetic."""
 
     __slots__ = ('_exp','_int','_sign', '_is_special')
     # Generally, the value of the Decimal instance is given by
diff --git a/Lib/_pyrepl/__main__.py b/Lib/_pyrepl/__main__.py
index c598019e7cd4ad..3fa992eee8eeff 100644
--- a/Lib/_pyrepl/__main__.py
+++ b/Lib/_pyrepl/__main__.py
@@ -1,47 +1,6 @@
-import os
-import sys
-
-CAN_USE_PYREPL = sys.platform != "win32"
-
-
-def interactive_console(mainmodule=None, quiet=False, pythonstartup=False):
-    global CAN_USE_PYREPL
-    if not CAN_USE_PYREPL:
-        return sys._baserepl()
-
-    startup_path = os.getenv("PYTHONSTARTUP")
-    if pythonstartup and startup_path:
-        import tokenize
-        with tokenize.open(startup_path) as f:
-            startup_code = compile(f.read(), startup_path, "exec")
-            exec(startup_code)
-
-    # set sys.{ps1,ps2} just before invoking the interactive interpreter. This
-    # mimics what CPython does in pythonrun.c
-    if not hasattr(sys, "ps1"):
-        sys.ps1 = ">>> "
-    if not hasattr(sys, "ps2"):
-        sys.ps2 = "... "
-
-    run_interactive = None
-    try:
-        import errno
-        if not os.isatty(sys.stdin.fileno()):
-            raise OSError(errno.ENOTTY, "tty required", "stdin")
-        from .simple_interact import check
-        if err := check():
-            raise RuntimeError(err)
-        from .simple_interact import run_multiline_interactive_console
-        run_interactive = run_multiline_interactive_console
-    except Exception as e:
-        from .trace import trace
-        msg = f"warning: can't use pyrepl: {e}"
-        trace(msg)
-        print(msg, file=sys.stderr)
-        CAN_USE_PYREPL = False
-    if run_interactive is None:
-        return sys._baserepl()
-    return run_interactive(mainmodule)
+# Important: don't add things to this module, as they will end up in the REPL's
+# default globals.  Use _pyrepl.main instead.
 
 if __name__ == "__main__":
-    interactive_console()
+    from .main import interactive_console as __pyrepl_interactive_console
+    __pyrepl_interactive_console()
diff --git a/Lib/_pyrepl/_minimal_curses.py b/Lib/_pyrepl/_minimal_curses.py
index 0757fb2c664add..d884f880f50ac7 100644
--- a/Lib/_pyrepl/_minimal_curses.py
+++ b/Lib/_pyrepl/_minimal_curses.py
@@ -17,7 +17,7 @@ class error(Exception):
     pass
 
 
-def _find_clib():
+def _find_clib() -> str:
     trylibs = ["ncursesw", "ncurses", "curses"]
 
     for lib in trylibs:
@@ -34,7 +34,7 @@ def _find_clib():
 clib.setupterm.restype = ctypes.c_int
 
 clib.tigetstr.argtypes = [ctypes.c_char_p]
-clib.tigetstr.restype = ctypes.POINTER(ctypes.c_char)
+clib.tigetstr.restype = ctypes.c_ssize_t
 
 clib.tparm.argtypes = [ctypes.c_char_p] + 9 * [ctypes.c_int]  # type: ignore[operator]
 clib.tparm.restype = ctypes.c_char_p
@@ -56,7 +56,7 @@ def tigetstr(cap):
     if not isinstance(cap, bytes):
         cap = cap.encode("ascii")
     result = clib.tigetstr(cap)
-    if ctypes.cast(result, ctypes.c_void_p).value == ERR:
+    if result == ERR:
         return None
     return ctypes.cast(result, ctypes.c_char_p).value
 
diff --git a/Lib/_pyrepl/_threading_handler.py b/Lib/_pyrepl/_threading_handler.py
new file mode 100644
index 00000000000000..82f5e8650a2072
--- /dev/null
+++ b/Lib/_pyrepl/_threading_handler.py
@@ -0,0 +1,74 @@
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+import traceback
+
+
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from threading import Thread
+    from types import TracebackType
+    from typing import Protocol
+
+    class ExceptHookArgs(Protocol):
+        @property
+        def exc_type(self) -> type[BaseException]: ...
+        @property
+        def exc_value(self) -> BaseException | None: ...
+        @property
+        def exc_traceback(self) -> TracebackType | None: ...
+        @property
+        def thread(self) -> Thread | None: ...
+
+    class ShowExceptions(Protocol):
+        def __call__(self) -> int: ...
+        def add(self, s: str) -> None: ...
+
+    from .reader import Reader
+
+
+def install_threading_hook(reader: Reader) -> None:
+    import threading
+
+    @dataclass
+    class ExceptHookHandler:
+        lock: threading.Lock = field(default_factory=threading.Lock)
+        messages: list[str] = field(default_factory=list)
+
+        def show(self) -> int:
+            count = 0
+            with self.lock:
+                if not self.messages:
+                    return 0
+                reader.restore()
+                for tb in self.messages:
+                    count += 1
+                    if tb:
+                        print(tb)
+                self.messages.clear()
+                reader.scheduled_commands.append("ctrl-c")
+                reader.prepare()
+            return count
+
+        def add(self, s: str) -> None:
+            with self.lock:
+                self.messages.append(s)
+
+        def exception(self, args: ExceptHookArgs) -> None:
+            lines = traceback.format_exception(
+                args.exc_type,
+                args.exc_value,
+                args.exc_traceback,
+                colorize=reader.can_colorize,
+            )  # type: ignore[call-overload]
+            pre = f"\nException in {args.thread.name}:\n" if args.thread else "\n"
+            tb = pre + "".join(lines)
+            self.add(tb)
+
+        def __call__(self) -> int:
+            return self.show()
+
+
+    handler = ExceptHookHandler()
+    reader.threading_hook = handler
+    threading.excepthook = handler.exception
diff --git a/Lib/_pyrepl/commands.py b/Lib/_pyrepl/commands.py
index 456cba0769c952..503ca1da329eaa 100644
--- a/Lib/_pyrepl/commands.py
+++ b/Lib/_pyrepl/commands.py
@@ -34,9 +34,7 @@
 
 # types
 if False:
-    from .reader import Reader
     from .historical_reader import HistoricalReader
-    from .console import Event
 
 
 class Command:
@@ -218,9 +216,17 @@ def do(self) -> None:
         import signal
 
         self.reader.console.finish()
+        self.reader.finish()
         os.kill(os.getpid(), signal.SIGINT)
 
 
+class ctrl_c(Command):
+    def do(self) -> None:
+        self.reader.console.finish()
+        self.reader.finish()
+        raise KeyboardInterrupt
+
+
 class suspend(Command):
     def do(self) -> None:
         import signal
@@ -245,7 +251,7 @@ def do(self) -> None:
             x, y = r.pos2xy()
             new_y = y - 1
 
-            if new_y < 0:
+            if r.bol() == 0:
                 if r.historyi > 0:
                     r.select_item(r.historyi - 1)
                     return
@@ -276,7 +282,7 @@ def do(self) -> None:
             x, y = r.pos2xy()
             new_y = y + 1
 
-            if new_y > r.max_row():
+            if r.eol() == len(b):
                 if r.historyi < len(r.history):
                     r.select_item(r.historyi + 1)
                     r.pos = r.eol(0)
@@ -303,7 +309,7 @@ def do(self) -> None:
 class left(MotionCommand):
     def do(self) -> None:
         r = self.reader
-        for i in range(r.get_arg()):
+        for _ in range(r.get_arg()):
             p = r.pos - 1
             if p >= 0:
                 r.pos = p
@@ -315,7 +321,7 @@ class right(MotionCommand):
     def do(self) -> None:
         r = self.reader
         b = r.buffer
-        for i in range(r.get_arg()):
+        for _ in range(r.get_arg()):
             p = r.pos + 1
             if p <= len(b):
                 r.pos = p
@@ -360,7 +366,8 @@ def do(self) -> None:
 class self_insert(EditCommand):
     def do(self) -> None:
         r = self.reader
-        r.insert(self.event * r.get_arg())
+        text = self.event * r.get_arg()
+        r.insert(text)
 
 
 class insert_nl(EditCommand):
@@ -452,16 +459,20 @@ def do(self) -> None:
         from site import gethistoryfile  # type: ignore[attr-defined]
 
         history = os.linesep.join(self.reader.history[:])
-        with self.reader.suspend():
-            pager = get_pager()
-            pager(history, gethistoryfile())
+        self.reader.console.restore()
+        pager = get_pager()
+        pager(history, gethistoryfile())
+        self.reader.console.prepare()
+
+        # We need to copy over the state so that it's consistent between
+        # console and reader, and console does not overwrite/append stuff
+        self.reader.console.screen = self.reader.screen.copy()
+        self.reader.console.posxy = self.reader.cxy
 
 
 class paste_mode(Command):
 
     def do(self) -> None:
-        if not self.reader.paste_mode:
-            self.reader.was_paste_mode_activated = True
         self.reader.paste_mode = not self.reader.paste_mode
         self.reader.dirty = True
 
@@ -469,9 +480,10 @@ def do(self) -> None:
 class enable_bracketed_paste(Command):
     def do(self) -> None:
         self.reader.paste_mode = True
-        self.reader.was_paste_mode_activated = True
+        self.reader.in_bracketed_paste = True
 
 class disable_bracketed_paste(Command):
     def do(self) -> None:
         self.reader.paste_mode = False
+        self.reader.in_bracketed_paste = False
         self.reader.dirty = True
diff --git a/Lib/_pyrepl/completing_reader.py b/Lib/_pyrepl/completing_reader.py
index 19fc06feaf3ced..9a005281dab1e6 100644
--- a/Lib/_pyrepl/completing_reader.py
+++ b/Lib/_pyrepl/completing_reader.py
@@ -30,7 +30,7 @@
 # types
 Command = commands.Command
 if False:
-    from .types import Callback, SimpleContextManager, KeySpec, CommandName
+    from .types import KeySpec, CommandName
 
 
 def prefix(wordlist: list[str], j: int = 0) -> str:
@@ -187,18 +187,20 @@ def do(self) -> None:
             if p:
                 r.insert(p)
             if last_is_completer:
-                if not r.cmpltn_menu_vis:
-                    r.cmpltn_menu_vis = 1
+                r.cmpltn_menu_visible = True
+                r.cmpltn_message_visible = False
                 r.cmpltn_menu, r.cmpltn_menu_end = build_menu(
                     r.console, completions, r.cmpltn_menu_end,
                     r.use_brackets, r.sort_in_column)
                 r.dirty = True
-            elif stem + p in completions:
-                r.msg = "[ complete but not unique ]"
-                r.dirty = True
-            else:
-                r.msg = "[ not unique ]"
-                r.dirty = True
+            elif not r.cmpltn_menu_visible:
+                r.cmpltn_message_visible = True
+                if stem + p in completions:
+                    r.msg = "[ complete but not unique ]"
+                    r.dirty = True
+                else:
+                    r.msg = "[ not unique ]"
+                    r.dirty = True
 
 
 class self_insert(commands.self_insert):
@@ -207,8 +209,7 @@ def do(self) -> None:
         r = self.reader  # type: ignore[assignment]
 
         commands.self_insert.do(self)
-
-        if r.cmpltn_menu_vis:
+        if r.cmpltn_menu_visible:
             stem = r.get_stem()
             if len(stem) < 1:
                 r.cmpltn_reset()
@@ -235,7 +236,8 @@ class CompletingReader(Reader):
 
     ### Instance variables
     cmpltn_menu: list[str] = field(init=False)
-    cmpltn_menu_vis: int = field(init=False)
+    cmpltn_menu_visible: bool = field(init=False)
+    cmpltn_message_visible: bool = field(init=False)
     cmpltn_menu_end: int = field(init=False)
     cmpltn_menu_choices: list[str] = field(init=False)
 
@@ -257,11 +259,16 @@ def after_command(self, cmd: Command) -> None:
 
     def calc_screen(self) -> list[str]:
         screen = super().calc_screen()
-        if self.cmpltn_menu_vis:
-            ly = self.lxy[1]
+        if self.cmpltn_menu_visible:
+            # We display the completions menu below the current prompt
+            ly = self.lxy[1] + 1
             screen[ly:ly] = self.cmpltn_menu
-            self.screeninfo[ly:ly] = [(0, [])]*len(self.cmpltn_menu)
-            self.cxy = self.cxy[0], self.cxy[1] + len(self.cmpltn_menu)
+            # If we're not in the middle of multiline edit, don't append to screeninfo
+            # since that screws up the position calculation in pos2xy function.
+            # This is a hack to prevent the cursor jumping
+            # into the completions menu when pressing left or down arrow.
+            if self.pos != len(self.buffer):
+                self.screeninfo[ly:ly] = [(0, [])]*len(self.cmpltn_menu)
         return screen
 
     def finish(self) -> None:
@@ -270,7 +277,8 @@ def finish(self) -> None:
 
     def cmpltn_reset(self) -> None:
         self.cmpltn_menu = []
-        self.cmpltn_menu_vis = 0
+        self.cmpltn_menu_visible = False
+        self.cmpltn_message_visible = False
         self.cmpltn_menu_end = 0
         self.cmpltn_menu_choices = []
 
diff --git a/Lib/_pyrepl/console.py b/Lib/_pyrepl/console.py
index d7e86e768671dc..0d78890b4f45d5 100644
--- a/Lib/_pyrepl/console.py
+++ b/Lib/_pyrepl/console.py
@@ -19,8 +19,21 @@
 
 from __future__ import annotations
 
+import _colorize  # type: ignore[import-not-found]
+
 from abc import ABC, abstractmethod
+import ast
+import code
 from dataclasses import dataclass, field
+import os.path
+import sys
+
+
+TYPE_CHECKING = False
+
+if TYPE_CHECKING:
+    from typing import IO
+    from typing import Callable
 
 
 @dataclass
@@ -32,10 +45,30 @@ class Event:
 
 @dataclass
 class Console(ABC):
+    posxy: tuple[int, int]
     screen: list[str] = field(default_factory=list)
     height: int = 25
     width: int = 80
 
+    def __init__(
+        self,
+        f_in: IO[bytes] | int = 0,
+        f_out: IO[bytes] | int = 1,
+        term: str = "",
+        encoding: str = "",
+    ):
+        self.encoding = encoding or sys.getdefaultencoding()
+
+        if isinstance(f_in, int):
+            self.input_fd = f_in
+        else:
+            self.input_fd = f_in.fileno()
+
+        if isinstance(f_out, int):
+            self.output_fd = f_out
+        else:
+            self.output_fd = f_out.fileno()
+
     @abstractmethod
     def refresh(self, screen: list[str], xy: tuple[int, int]) -> None: ...
 
@@ -103,10 +136,78 @@ def getpending(self) -> Event:
         ...
 
     @abstractmethod
-    def wait(self) -> None:
-        """Wait for an event."""
+    def wait(self, timeout: float | None) -> bool:
+        """Wait for an event. The return value is True if an event is
+        available, False if the timeout has been reached. If timeout is
+        None, wait forever. The timeout is in milliseconds."""
         ...
 
-    @abstractmethod
-    def repaint(self) -> None:
+    @property
+    def input_hook(self) -> Callable[[], int] | None:
+        """Returns the current input hook."""
         ...
+
+    @abstractmethod
+    def repaint(self) -> None: ...
+
+
+class InteractiveColoredConsole(code.InteractiveConsole):
+    def __init__(
+        self,
+        locals: dict[str, object] | None = None,
+        filename: str = "<console>",
+        *,
+        local_exit: bool = False,
+    ) -> None:
+        super().__init__(locals=locals, filename=filename, local_exit=local_exit)  # type: ignore[call-arg]
+        self.can_colorize = _colorize.can_colorize()
+
+    def showsyntaxerror(self, filename=None, **kwargs):
+        super().showsyntaxerror(filename=filename, **kwargs)
+
+    def _excepthook(self, typ, value, tb):
+        import traceback
+        lines = traceback.format_exception(
+                typ, value, tb,
+                colorize=self.can_colorize,
+                limit=traceback.BUILTIN_EXCEPTION_LIMIT)
+        self.write(''.join(lines))
+
+    def runsource(self, source, filename="<input>", symbol="single"):
+        try:
+            tree = self.compile.compiler(
+                source,
+                filename,
+                "exec",
+                ast.PyCF_ONLY_AST,
+                incomplete_input=False,
+            )
+        except (SyntaxError, OverflowError, ValueError):
+            self.showsyntaxerror(filename, source=source)
+            return False
+        if tree.body:
+            *_, last_stmt = tree.body
+        for stmt in tree.body:
+            wrapper = ast.Interactive if stmt is last_stmt else ast.Module
+            the_symbol = symbol if stmt is last_stmt else "exec"
+            item = wrapper([stmt])
+            try:
+                code = self.compile.compiler(item, filename, the_symbol)
+            except SyntaxError as e:
+                if e.args[0] == "'await' outside function":
+                    python = os.path.basename(sys.executable)
+                    e.add_note(
+                        f"Try the asyncio REPL ({python} -m asyncio) to use"
+                        f" top-level 'await' and run background asyncio tasks."
+                    )
+                self.showsyntaxerror(filename, source=source)
+                return False
+            except (OverflowError, ValueError):
+                self.showsyntaxerror(filename, source=source)
+                return False
+
+            if code is None:
+                return True
+
+            self.runcode(code)
+        return False
diff --git a/Lib/_pyrepl/fancy_termios.py b/Lib/_pyrepl/fancy_termios.py
index 5b85cb0f52521f..0468b9a2670267 100644
--- a/Lib/_pyrepl/fancy_termios.py
+++ b/Lib/_pyrepl/fancy_termios.py
@@ -40,7 +40,9 @@ def as_list(self):
             self.lflag,
             self.ispeed,
             self.ospeed,
-            self.cc,
+            # Always return a copy of the control characters list to ensure
+            # there are not any additional references to self.cc
+            self.cc[:],
         ]
 
     def copy(self):
diff --git a/Lib/_pyrepl/historical_reader.py b/Lib/_pyrepl/historical_reader.py
index eef7d901b083ef..c4b95fa2e81ee6 100644
--- a/Lib/_pyrepl/historical_reader.py
+++ b/Lib/_pyrepl/historical_reader.py
@@ -27,7 +27,7 @@
 
 
 if False:
-    from .types import Callback, SimpleContextManager, KeySpec, CommandName
+    from .types import SimpleContextManager, KeySpec, CommandName
 
 
 isearch_keymap: tuple[tuple[KeySpec, CommandName], ...] = tuple(
@@ -71,6 +71,18 @@ def do(self) -> None:
         r.select_item(r.historyi - 1)
 
 
+class history_search_backward(commands.Command):
+    def do(self) -> None:
+        r = self.reader
+        r.search_next(forwards=False)
+
+
+class history_search_forward(commands.Command):
+    def do(self) -> None:
+        r = self.reader
+        r.search_next(forwards=True)
+
+
 class restore_history(commands.Command):
     def do(self) -> None:
         r = self.reader
@@ -234,6 +246,8 @@ def __post_init__(self) -> None:
             isearch_forwards,
             isearch_backwards,
             operate_and_get_next,
+            history_search_backward,
+            history_search_forward,
         ]:
             self.commands[c.__name__] = c
             self.commands[c.__name__.replace("_", "-")] = c
@@ -251,19 +265,22 @@ def collect_keymap(self) -> tuple[tuple[KeySpec, CommandName], ...]:
             (r"\C-s", "forward-history-isearch"),
             (r"\M-r", "restore-history"),
             (r"\M-.", "yank-arg"),
-            (r"\<page down>", "last-history"),
-            (r"\<page up>", "first-history"),
+            (r"\<page down>", "history-search-forward"),
+            (r"\x1b[6~", "history-search-forward"),
+            (r"\<page up>", "history-search-backward"),
+            (r"\x1b[5~", "history-search-backward"),
         )
 
     def select_item(self, i: int) -> None:
         self.transient_history[self.historyi] = self.get_unicode()
         buf = self.transient_history.get(i)
         if buf is None:
-            buf = self.history[i]
+            buf = self.history[i].rstrip()
         self.buffer = list(buf)
         self.historyi = i
         self.pos = len(self.buffer)
         self.dirty = True
+        self.last_refresh_cache.invalidated = True
 
     def get_item(self, i: int) -> str:
         if i != len(self.history):
@@ -273,13 +290,17 @@ def get_item(self, i: int) -> str:
 
     @contextmanager
     def suspend(self) -> SimpleContextManager:
-        with super().suspend():
-            try:
-                old_history = self.history[:]
-                del self.history[:]
-                yield
-            finally:
-                self.history[:] = old_history
+        with super().suspend(), self.suspend_history():
+            yield
+
+    @contextmanager
+    def suspend_history(self) -> SimpleContextManager:
+        try:
+            old_history = self.history[:]
+            del self.history[:]
+            yield
+        finally:
+            self.history[:] = old_history
 
     def prepare(self) -> None:
         super().prepare()
@@ -304,6 +325,59 @@ def get_prompt(self, lineno: int, cursor_on_line: bool) -> str:
         else:
             return super().get_prompt(lineno, cursor_on_line)
 
+    def search_next(self, *, forwards: bool) -> None:
+        """Search history for the current line contents up to the cursor.
+
+        Selects the first item found. If nothing is under the cursor, any next
+        item in history is selected.
+        """
+        pos = self.pos
+        s = self.get_unicode()
+        history_index = self.historyi
+
+        # In multiline contexts, we're only interested in the current line.
+        nl_index = s.rfind('\n', 0, pos)
+        prefix = s[nl_index + 1:pos]
+        pos = len(prefix)
+
+        match_prefix = len(prefix)
+        len_item = 0
+        if history_index < len(self.history):
+            len_item = len(self.get_item(history_index))
+        if len_item and pos == len_item:
+            match_prefix = False
+        elif not pos:
+            match_prefix = False
+
+        while 1:
+            if forwards:
+                out_of_bounds = history_index >= len(self.history) - 1
+            else:
+                out_of_bounds = history_index == 0
+            if out_of_bounds:
+                if forwards and not match_prefix:
+                    self.pos = 0
+                    self.buffer = []
+                    self.dirty = True
+                else:
+                    self.error("not found")
+                return
+
+            history_index += 1 if forwards else -1
+            s = self.get_item(history_index)
+
+            if not match_prefix:
+                self.select_item(history_index)
+                return
+
+            len_acc = 0
+            for i, line in enumerate(s.splitlines(keepends=True)):
+                if line.startswith(prefix):
+                    self.select_item(history_index)
+                    self.pos = pos + len_acc
+                    return
+                len_acc += len(line)
+
     def isearch_next(self) -> None:
         st = self.isearch_term
         p = self.pos
diff --git a/Lib/_pyrepl/input.py b/Lib/_pyrepl/input.py
index 300e16d1d25441..21c24eb5cde3e3 100644
--- a/Lib/_pyrepl/input.py
+++ b/Lib/_pyrepl/input.py
@@ -60,7 +60,7 @@ def empty(self) -> bool:
 
 
 class KeymapTranslator(InputTranslator):
-    def __init__(self, keymap, verbose=0, invalid_cls=None, character_cls=None):
+    def __init__(self, keymap, verbose=False, invalid_cls=None, character_cls=None):
         self.verbose = verbose
         from .keymap import compile_keymap, parse_keys
 
@@ -110,5 +110,5 @@ def get(self):
         else:
             return None
 
-    def empty(self):
+    def empty(self) -> bool:
         return not self.results
diff --git a/Lib/_pyrepl/keymap.py b/Lib/_pyrepl/keymap.py
index 31a02642ce8ceb..2fb03d1952382f 100644
--- a/Lib/_pyrepl/keymap.py
+++ b/Lib/_pyrepl/keymap.py
@@ -19,38 +19,32 @@
 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 """
-functions for parsing keyspecs
+Keymap contains functions for parsing keyspecs and turning keyspecs into
+appropriate sequences.
 
-Support for turning keyspecs into appropriate sequences.
+A keyspec is a string representing a sequence of key presses that can
+be bound to a command. All characters other than the backslash represent
+themselves. In the traditional manner, a backslash introduces an escape
+sequence.
 
-pyrepl uses it's own bastardized keyspec format, which is meant to be
-a strict superset of readline's \"KEYSEQ\" format (which is to say
-that if you can come up with a spec readline accepts that this
-doesn't, you've found a bug and should tell me about it).
-
-Note that this is the `\\C-o' style of readline keyspec, not the
-`Control-o' sort.
-
-A keyspec is a string representing a sequence of keypresses that can
-be bound to a command.
-
-All characters other than the backslash represent themselves.  In the
-traditional manner, a backslash introduces a escape sequence.
+pyrepl uses its own keyspec format that is meant to be a strict superset of
+readline's KEYSEQ format. This means that if a spec is found that readline
+accepts that this doesn't, it should be logged as a bug. Note that this means
+we're using the `\\C-o' style of readline's keyspec, not the `Control-o' sort.
 
 The extension to readline is that the sequence \\<KEY> denotes the
-sequence of charaters produced by hitting KEY.
+sequence of characters produced by hitting KEY.
 
 Examples:
-
-`a'     - what you get when you hit the `a' key
+`a'      - what you get when you hit the `a' key
 `\\EOA'  - Escape - O - A (up, on my terminal)
 `\\<UP>' - the up arrow key
-`\\<up>' - ditto (keynames are case insensitive)
+`\\<up>' - ditto (keynames are case-insensitive)
 `\\C-o', `\\c-o'  - control-o
 `\\M-.'  - meta-period
 `\\E.'   - ditto (that's how meta works for pyrepl)
 `\\<tab>', `\\<TAB>', `\\t', `\\011', '\\x09', '\\X09', '\\C-i', '\\C-I'
-   - all of these are the tab character.  Can you think of any more?
+   - all of these are the tab character.
 """
 
 _escapes = {
@@ -111,7 +105,17 @@ class KeySpecError(Exception):
     pass
 
 
-def _parse_key1(key, s):
+def parse_keys(keys: str) -> list[str]:
+    """Parse keys in keyspec format to a sequence of keys."""
+    s = 0
+    r: list[str] = []
+    while s < len(keys):
+        k, s = _parse_single_key_sequence(keys, s)
+        r.extend(k)
+    return r
+
+
+def _parse_single_key_sequence(key: str, s: int) -> tuple[list[str], int]:
     ctrl = 0
     meta = 0
     ret = ""
@@ -177,23 +181,17 @@ def _parse_key1(key, s):
             ret = key[s]
             s += 1
     if ctrl:
-        if len(ret) > 1:
-            raise KeySpecError("\\C- must be followed by a character")
-        ret = chr(ord(ret) & 0x1F)  # curses.ascii.ctrl()
-    if meta:
-        ret = ["\033", ret]
-    else:
-        ret = [ret]
-    return ret, s
-
+        if len(ret) == 1:
+            ret = chr(ord(ret) & 0x1F)  # curses.ascii.ctrl()
+        elif ret in {"left", "right"}:
+            ret = f"ctrl {ret}"
+        else:
+            raise KeySpecError("\\C- followed by invalid key")
 
-def parse_keys(key):
-    s = 0
-    r = []
-    while s < len(key):
-        k, s = _parse_key1(key, s)
-        r.extend(k)
-    return r
+    result = [ret], s
+    if meta:
+        result[0].insert(0, "\033")
+    return result
 
 
 def compile_keymap(keymap, empty=b""):
diff --git a/Lib/_pyrepl/main.py b/Lib/_pyrepl/main.py
new file mode 100644
index 00000000000000..a6f824dcc4ad14
--- /dev/null
+++ b/Lib/_pyrepl/main.py
@@ -0,0 +1,59 @@
+import errno
+import os
+import sys
+
+
+CAN_USE_PYREPL: bool
+FAIL_REASON: str
+try:
+    if sys.platform == "win32" and sys.getwindowsversion().build < 10586:
+        raise RuntimeError("Windows 10 TH2 or later required")
+    if not os.isatty(sys.stdin.fileno()):
+        raise OSError(errno.ENOTTY, "tty required", "stdin")
+    from .simple_interact import check
+    if err := check():
+        raise RuntimeError(err)
+except Exception as e:
+    CAN_USE_PYREPL = False
+    FAIL_REASON = f"warning: can't use pyrepl: {e}"
+else:
+    CAN_USE_PYREPL = True
+    FAIL_REASON = ""
+
+
+def interactive_console(mainmodule=None, quiet=False, pythonstartup=False):
+    if not CAN_USE_PYREPL:
+        if not os.getenv('PYTHON_BASIC_REPL') and FAIL_REASON:
+            from .trace import trace
+            trace(FAIL_REASON)
+            print(FAIL_REASON, file=sys.stderr)
+        return sys._baserepl()
+
+    if mainmodule:
+        namespace = mainmodule.__dict__
+    else:
+        import __main__
+        namespace = __main__.__dict__
+        namespace.pop("__pyrepl_interactive_console", None)
+
+    # sys._baserepl() above does this internally, we do it here
+    startup_path = os.getenv("PYTHONSTARTUP")
+    if pythonstartup and startup_path:
+        sys.audit("cpython.run_startup", startup_path)
+
+        import tokenize
+        with tokenize.open(startup_path) as f:
+            startup_code = compile(f.read(), startup_path, "exec")
+            exec(startup_code, namespace)
+
+    # set sys.{ps1,ps2} just before invoking the interactive interpreter. This
+    # mimics what CPython does in pythonrun.c
+    if not hasattr(sys, "ps1"):
+        sys.ps1 = ">>> "
+    if not hasattr(sys, "ps2"):
+        sys.ps2 = "... "
+
+    from .console import InteractiveColoredConsole
+    from .simple_interact import run_multiline_interactive_console
+    console = InteractiveColoredConsole(namespace, filename="<stdin>")
+    run_multiline_interactive_console(console)
diff --git a/Lib/_pyrepl/mypy.ini b/Lib/_pyrepl/mypy.ini
index ecd03094dbf538..395f5945ab740b 100644
--- a/Lib/_pyrepl/mypy.ini
+++ b/Lib/_pyrepl/mypy.ini
@@ -10,18 +10,15 @@ platform = linux
 pretty = True
 
 # Enable most stricter settings
-enable_error_code = ignore-without-code
+enable_error_code = ignore-without-code,redundant-expr
 strict = True
 
 # Various stricter settings that we can't yet enable
 # Try to enable these in the following order:
-disallow_any_generics = False
 disallow_untyped_calls = False
 disallow_untyped_defs = False
 check_untyped_defs = False
 
-disable_error_code = return
-
 # Various internal modules that typeshed deliberately doesn't have stubs for:
 [mypy-_abc.*,_opcode.*,_overlapped.*,_testcapi.*,_testinternalcapi.*,test.*]
 ignore_missing_imports = True
diff --git a/Lib/_pyrepl/pager.py b/Lib/_pyrepl/pager.py
index af0409c4523bc2..1fddc63e3ee3ad 100644
--- a/Lib/_pyrepl/pager.py
+++ b/Lib/_pyrepl/pager.py
@@ -8,7 +8,7 @@
 
 # types
 if False:
-    from typing import Protocol, Any
+    from typing import Protocol
     class Pager(Protocol):
         def __call__(self, text: str, title: str = "") -> None:
             ...
@@ -35,7 +35,9 @@ def get_pager() -> Pager:
     if os.environ.get('TERM') in ('dumb', 'emacs'):
         return plain_pager
     if sys.platform == 'win32':
-        return lambda text, title='': tempfilepager(plain(text), 'more <')
+        return lambda text, title='': tempfile_pager(plain(text), 'more <')
+    if hasattr(os, 'system') and os.system('(pager) 2>/dev/null') == 0:
+        return lambda text, title='': pipe_pager(text, 'pager', title)
     if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0:
         return lambda text, title='': pipe_pager(text, 'less', title)
 
@@ -76,10 +78,14 @@ def tty_pager(text: str, title: str = '') -> None:
         fd = sys.stdin.fileno()
         old = termios.tcgetattr(fd)
         tty.setcbreak(fd)
-        getchar = lambda: sys.stdin.read(1)
         has_tty = True
+
+        def getchar() -> str:
+            return sys.stdin.read(1)
+
     except (ImportError, AttributeError, io.UnsupportedOperation):
-        getchar = lambda: sys.stdin.readline()[:-1][:1]
+        def getchar() -> str:
+            return sys.stdin.readline()[:-1][:1]
 
     try:
         try:
diff --git a/Lib/_pyrepl/reader.py b/Lib/_pyrepl/reader.py
index d15a150180811d..dc26bfd3a34ffb 100644
--- a/Lib/_pyrepl/reader.py
+++ b/Lib/_pyrepl/reader.py
@@ -21,6 +21,8 @@
 
 from __future__ import annotations
 
+import sys
+
 from contextlib import contextmanager
 from dataclasses import dataclass, field, fields
 import unicodedata
@@ -28,20 +30,19 @@
 
 
 from . import commands, console, input
-from .utils import ANSI_ESCAPE_SEQUENCE, wlen
+from .utils import ANSI_ESCAPE_SEQUENCE, wlen, str_width
 from .trace import trace
 
 
 # types
 Command = commands.Command
-if False:
-    from .types import Callback, SimpleContextManager, KeySpec, CommandName
+from .types import Callback, SimpleContextManager, KeySpec, CommandName
 
 
 def disp_str(buffer: str) -> tuple[str, list[int]]:
     """disp_str(buffer:string) -> (string, [int])
 
-    Return the string that should be the printed represenation of
+    Return the string that should be the printed representation of
     |buffer| and a list detailing where the characters of |buffer|
     get used up.  E.g.:
 
@@ -52,11 +53,19 @@ def disp_str(buffer: str) -> tuple[str, list[int]]:
     b: list[int] = []
     s: list[str] = []
     for c in buffer:
-        if unicodedata.category(c).startswith("C"):
+        if c == '\x1a':
+            s.append(c)
+            b.append(2)
+        elif ord(c) < 128:
+            s.append(c)
+            b.append(1)
+        elif unicodedata.category(c).startswith("C"):
             c = r"\u%04x" % ord(c)
-        s.append(c)
-        b.append(wlen(c))
-        b.extend([0] * (len(c) - 1))
+            s.append(c)
+            b.extend([0] * (len(c) - 1))
+        else:
+            s.append(c)
+            b.append(str_width(c))
     return "".join(s), b
 
 
@@ -105,7 +114,7 @@ def make_default_commands() -> dict[CommandName, type[Command]]:
         (r"\C-w", "unix-word-rubout"),
         (r"\C-x\C-u", "upcase-region"),
         (r"\C-y", "yank"),
-        (r"\C-z", "suspend"),
+        *(() if sys.platform == "win32" else ((r"\C-z", "suspend"), )),
         (r"\M-b", "backward-word"),
         (r"\M-c", "capitalize-word"),
         (r"\M-d", "kill-word"),
@@ -125,10 +134,11 @@ def make_default_commands() -> dict[CommandName, type[Command]]:
         (r"\M-7", "digit-arg"),
         (r"\M-8", "digit-arg"),
         (r"\M-9", "digit-arg"),
-        # (r'\M-\n', 'insert-nl'),
+        (r"\M-\n", "accept"),
         ("\\\\", "self-insert"),
         (r"\x1b[200~", "enable_bracketed_paste"),
         (r"\x1b[201~", "disable_bracketed_paste"),
+        (r"\x03", "ctrl-c"),
     ]
     + [(c, "self-insert") for c in map(chr, range(32, 127)) if c != "\\"]
     + [(c, "self-insert") for c in map(chr, range(128, 256)) if c.isalpha()]
@@ -136,8 +146,11 @@ def make_default_commands() -> dict[CommandName, type[Command]]:
         (r"\<up>", "up"),
         (r"\<down>", "down"),
         (r"\<left>", "left"),
+        (r"\C-\<left>", "backward-word"),
         (r"\<right>", "right"),
+        (r"\C-\<right>", "forward-word"),
         (r"\<delete>", "delete"),
+        (r"\x1b[3~", "delete"),
         (r"\<backspace>", "backspace"),
         (r"\M-\<backspace>", "backward-kill-word"),
         (r"\<end>", "end-of-line"),  # was 'end'
@@ -221,17 +234,70 @@ class Reader:
     dirty: bool = False
     finished: bool = False
     paste_mode: bool = False
-    was_paste_mode_activated: bool = False
+    in_bracketed_paste: bool = False
     commands: dict[str, type[Command]] = field(default_factory=make_default_commands)
     last_command: type[Command] | None = None
     syntax_table: dict[str, int] = field(default_factory=make_default_syntax_table)
-    msg_at_bottom: bool = True
     keymap: tuple[tuple[str, str], ...] = ()
     input_trans: input.KeymapTranslator = field(init=False)
     input_trans_stack: list[input.KeymapTranslator] = field(default_factory=list)
+    screen: list[str] = field(default_factory=list)
     screeninfo: list[tuple[int, list[int]]] = field(init=False)
     cxy: tuple[int, int] = field(init=False)
     lxy: tuple[int, int] = field(init=False)
+    scheduled_commands: list[str] = field(default_factory=list)
+    can_colorize: bool = False
+    threading_hook: Callback | None = None
+
+    ## cached metadata to speed up screen refreshes
+    @dataclass
+    class RefreshCache:
+        in_bracketed_paste: bool = False
+        screen: list[str] = field(default_factory=list)
+        screeninfo: list[tuple[int, list[int]]] = field(init=False)
+        line_end_offsets: list[int] = field(default_factory=list)
+        pos: int = field(init=False)
+        cxy: tuple[int, int] = field(init=False)
+        dimensions: tuple[int, int] = field(init=False)
+        invalidated: bool = False
+
+        def update_cache(self,
+                         reader: Reader,
+                         screen: list[str],
+                         screeninfo: list[tuple[int, list[int]]],
+            ) -> None:
+            self.in_bracketed_paste = reader.in_bracketed_paste
+            self.screen = screen.copy()
+            self.screeninfo = screeninfo.copy()
+            self.pos = reader.pos
+            self.cxy = reader.cxy
+            self.dimensions = reader.console.width, reader.console.height
+            self.invalidated = False
+
+        def valid(self, reader: Reader) -> bool:
+            if self.invalidated:
+                return False
+            dimensions = reader.console.width, reader.console.height
+            dimensions_changed = dimensions != self.dimensions
+            paste_changed = reader.in_bracketed_paste != self.in_bracketed_paste
+            return not (dimensions_changed or paste_changed)
+
+        def get_cached_location(self, reader: Reader) -> tuple[int, int]:
+            if self.invalidated:
+                raise ValueError("Cache is invalidated")
+            offset = 0
+            earliest_common_pos = min(reader.pos, self.pos)
+            num_common_lines = len(self.line_end_offsets)
+            while num_common_lines > 0:
+                offset = self.line_end_offsets[num_common_lines - 1]
+                if earliest_common_pos > offset:
+                    break
+                num_common_lines -= 1
+            else:
+                offset = 0
+            return offset, num_common_lines
+
+    last_refresh_cache: RefreshCache = field(default_factory=RefreshCache)
 
     def __post_init__(self) -> None:
         # Enable the use of `insert` without a `prepare` call - necessary to
@@ -241,34 +307,71 @@ def __post_init__(self) -> None:
         self.input_trans = input.KeymapTranslator(
             self.keymap, invalid_cls="invalid-key", character_cls="self-insert"
         )
-        self.screeninfo = [(0, [0])]
+        self.screeninfo = [(0, [])]
         self.cxy = self.pos2xy()
         self.lxy = (self.pos, 0)
+        self.can_colorize = can_colorize()
+
+        self.last_refresh_cache.screeninfo = self.screeninfo
+        self.last_refresh_cache.pos = self.pos
+        self.last_refresh_cache.cxy = self.cxy
+        self.last_refresh_cache.dimensions = (0, 0)
 
     def collect_keymap(self) -> tuple[tuple[KeySpec, CommandName], ...]:
         return default_keymap
 
     def calc_screen(self) -> list[str]:
-        """The purpose of this method is to translate changes in
-        self.buffer into changes in self.screen.  Currently it rips
-        everything down and starts from scratch, which whilst not
-        especially efficient is certainly simple(r).
-        """
-        lines = self.get_unicode().split("\n")
-        screen: list[str] = []
-        screeninfo: list[tuple[int, list[int]]] = []
+        """Translate changes in self.buffer into changes in self.console.screen."""
+        # Since the last call to calc_screen:
+        # screen and screeninfo may differ due to a completion menu being shown
+        # pos and cxy may differ due to edits, cursor movements, or completion menus
+
+        # Lines that are above both the old and new cursor position can't have changed,
+        # unless the terminal has been resized (which might cause reflowing) or we've
+        # entered or left paste mode (which changes prompts, causing reflowing).
+        num_common_lines = 0
+        offset = 0
+        if self.last_refresh_cache.valid(self):
+            offset, num_common_lines = self.last_refresh_cache.get_cached_location(self)
+
+        screen = self.last_refresh_cache.screen
+        del screen[num_common_lines:]
+
+        screeninfo = self.last_refresh_cache.screeninfo
+        del screeninfo[num_common_lines:]
+
+        last_refresh_line_end_offsets = self.last_refresh_cache.line_end_offsets
+        del last_refresh_line_end_offsets[num_common_lines:]
+
         pos = self.pos
-        for ln, line in enumerate(lines):
+        pos -= offset
+
+        prompt_from_cache = (offset and self.buffer[offset - 1] != "\n")
+
+        lines = "".join(self.buffer[offset:]).split("\n")
+
+        cursor_found = False
+        lines_beyond_cursor = 0
+        for ln, line in enumerate(lines, num_common_lines):
             ll = len(line)
             if 0 <= pos <= ll:
-                if self.msg and not self.msg_at_bottom:
-                    for mline in self.msg.split("\n"):
-                        screen.append(mline)
-                        screeninfo.append((0, []))
                 self.lxy = pos, ln
-            prompt = self.get_prompt(ln, ll >= pos >= 0)
+                cursor_found = True
+            elif cursor_found:
+                lines_beyond_cursor += 1
+                if lines_beyond_cursor > self.console.height:
+                    # No need to keep formatting lines.
+                    # The console can't show them.
+                    break
+            if prompt_from_cache:
+                # Only the first line's prompt can come from the cache
+                prompt_from_cache = False
+                prompt = ""
+            else:
+                prompt = self.get_prompt(ln, ll >= pos >= 0)
             while "\n" in prompt:
                 pre_prompt, _, prompt = prompt.partition("\n")
+                last_refresh_line_end_offsets.append(offset)
                 screen.append(pre_prompt)
                 screeninfo.append((0, []))
             pos -= ll + 1
@@ -276,10 +379,13 @@ def calc_screen(self) -> list[str]:
             l, l2 = disp_str(line)
             wrapcount = (wlen(l) + lp) // self.console.width
             if wrapcount == 0:
+                offset += ll + 1  # Takes all of the line plus the newline
+                last_refresh_line_end_offsets.append(offset)
                 screen.append(prompt + l)
                 screeninfo.append((lp, l2))
             else:
-                for i in range(wrapcount + 1):
+                i = 0
+                while l:
                     prelen = lp if i == 0 else 0
                     index_to_wrap_before = 0
                     column = 0
@@ -289,21 +395,32 @@ def calc_screen(self) -> list[str]:
                         index_to_wrap_before += 1
                         column += character_width
                     pre = prompt if i == 0 else ""
-                    post = "\\" if i != wrapcount else ""
-                    after = [1] if i != wrapcount else []
+                    if len(l) > index_to_wrap_before:
+                        offset += index_to_wrap_before
+                        post = "\\"
+                        after = [1]
+                    else:
+                        offset += index_to_wrap_before + 1  # Takes the newline
+                        post = ""
+                        after = []
+                    last_refresh_line_end_offsets.append(offset)
                     screen.append(pre + l[:index_to_wrap_before] + post)
                     screeninfo.append((prelen, l2[:index_to_wrap_before] + after))
                     l = l[index_to_wrap_before:]
                     l2 = l2[index_to_wrap_before:]
+                    i += 1
         self.screeninfo = screeninfo
         self.cxy = self.pos2xy()
-        if self.msg and self.msg_at_bottom:
+        if self.msg:
             for mline in self.msg.split("\n"):
                 screen.append(mline)
                 screeninfo.append((0, []))
+
+        self.last_refresh_cache.update_cache(self, screen, screeninfo)
         return screen
 
-    def process_prompt(self, prompt: str) -> tuple[str, int]:
+    @staticmethod
+    def process_prompt(prompt: str) -> tuple[str, int]:
         """Process the prompt.
 
         This means calculate the length of the prompt. The character \x01
@@ -315,6 +432,11 @@ def process_prompt(self, prompt: str) -> tuple[str, int]:
         # sequences if they were not explicitly within \x01...\x02.
         # They are CSI (or ANSI) sequences  ( ESC [ ... LETTER )
 
+        # wlen from utils already excludes ANSI_ESCAPE_SEQUENCE chars,
+        # which breaks the logic below so we redefine it here.
+        def wlen(s: str) -> int:
+            return sum(str_width(i) for i in s)
+
         out_prompt = ""
         l = wlen(prompt)
         pos = 0
@@ -407,27 +529,26 @@ def get_arg(self, default: int = 1) -> int:
         """
         if self.arg is None:
             return default
-        else:
-            return self.arg
+        return self.arg
 
     def get_prompt(self, lineno: int, cursor_on_line: bool) -> str:
         """Return what should be in the left-hand margin for line
         `lineno'."""
         if self.arg is not None and cursor_on_line:
-            prompt = "(arg: %s) " % self.arg
-        elif self.paste_mode:
+            prompt = f"(arg: {self.arg}) "
+        elif self.paste_mode and not self.in_bracketed_paste:
             prompt = "(paste) "
         elif "\n" in self.buffer:
             if lineno == 0:
                 prompt = self.ps2
-            elif lineno == self.buffer.count("\n"):
+            elif self.ps4 and lineno == self.buffer.count("\n"):
                 prompt = self.ps4
             else:
                 prompt = self.ps3
         else:
             prompt = self.ps1
 
-        if can_colorize():
+        if self.can_colorize:
             prompt = f"{ANSIColors.BOLD_MAGENTA}{prompt}{ANSIColors.RESET}"
         return prompt
 
@@ -466,10 +587,11 @@ def setpos_from_xy(self, x: int, y: int) -> None:
     def pos2xy(self) -> tuple[int, int]:
         """Return the x, y coordinates of position 'pos'."""
         # this *is* incomprehensible, yes.
-        y = 0
+        p, y = 0, 0
+        l2: list[int] = []
         pos = self.pos
         assert 0 <= pos <= len(self.buffer)
-        if pos == len(self.buffer):
+        if pos == len(self.buffer) and len(self.screeninfo) > 0:
             y = len(self.screeninfo) - 1
             p, l2 = self.screeninfo[y]
             return p + sum(l2) + l2.count(0), y
@@ -480,12 +602,12 @@ def pos2xy(self) -> tuple[int, int]:
             offset = l - 1 if in_wrapped_line else l  # need to remove backslash
             if offset >= pos:
                 break
+
+            if p + sum(l2) >= self.console.width:
+                pos -= l - 1  # -1 cause backslash is not in buffer
             else:
-                if p + sum(l2) >= self.console.width:
-                    pos -= l - 1  # -1 cause backslash is not in buffer
-                else:
-                    pos -= l + 1  # +1 cause newline is in buffer
-                y += 1
+                pos -= l + 1  # +1 cause newline is in buffer
+            y += 1
         return p + sum(l2[:pos]), y
 
     def insert(self, text: str | list[str]) -> None:
@@ -523,6 +645,10 @@ def prepare(self) -> None:
             self.restore()
             raise
 
+        while self.scheduled_commands:
+            cmd = self.scheduled_commands.pop()
+            self.do_cmd((cmd, []))
+
     def last_command_is(self, cls: type) -> bool:
         if not self.last_command:
             return False
@@ -543,7 +669,6 @@ def suspend(self) -> SimpleContextManager:
             for arg in ("msg", "ps1", "ps2", "ps3", "ps4", "paste_mode"):
                 setattr(self, arg, prev_state[arg])
             self.prepare()
-            pass
 
     def finish(self) -> None:
         """Called when a command signals that we're finished."""
@@ -560,9 +685,12 @@ def update_screen(self) -> None:
 
     def refresh(self) -> None:
         """Recalculate and refresh the screen."""
+        if self.in_bracketed_paste and self.buffer and not self.buffer[-1] == "\n":
+            return
+
         # this call sets up self.cxy, so call it first.
-        screen = self.calc_screen()
-        self.console.refresh(screen, self.cxy)
+        self.screen = self.calc_screen()
+        self.console.refresh(self.screen, self.cxy)
         self.dirty = False
 
     def do_cmd(self, cmd: tuple[str, list[str]]) -> None:
@@ -596,6 +724,24 @@ def do_cmd(self, cmd: tuple[str, list[str]]) -> None:
             self.console.finish()
             self.finish()
 
+    def run_hooks(self) -> None:
+        threading_hook = self.threading_hook
+        if threading_hook is None and 'threading' in sys.modules:
+            from ._threading_handler import install_threading_hook
+            install_threading_hook(self)
+        if threading_hook is not None:
+            try:
+                threading_hook()
+            except Exception:
+                pass
+
+        input_hook = self.console.input_hook
+        if input_hook:
+            try:
+                input_hook()
+            except Exception:
+                pass
+
     def handle1(self, block: bool = True) -> bool:
         """Handle a single event.  Wait as long as it takes if block
         is true (the default), otherwise return False if no event is
@@ -606,8 +752,13 @@ def handle1(self, block: bool = True) -> bool:
             self.dirty = True
 
         while True:
-            event = self.console.get_event(block)
-            if not event:  # can only happen if we're not blocking
+            # We use the same timeout as in readline.c: 100ms
+            self.run_hooks()
+            self.console.wait(100)
+            event = self.console.get_event(block=False)
+            if not event:
+                if block:
+                    continue
                 return False
 
             translate = True
@@ -629,8 +780,7 @@ def handle1(self, block: bool = True) -> bool:
             if cmd is None:
                 if block:
                     continue
-                else:
-                    return False
+                return False
 
             self.do_cmd(cmd)
             return True
diff --git a/Lib/_pyrepl/readline.py b/Lib/_pyrepl/readline.py
index d28a7f3779f302..888185eb03be66 100644
--- a/Lib/_pyrepl/readline.py
+++ b/Lib/_pyrepl/readline.py
@@ -28,16 +28,24 @@
 
 from __future__ import annotations
 
+import warnings
 from dataclasses import dataclass, field
 
 import os
-import readline
 from site import gethistoryfile   # type: ignore[attr-defined]
 import sys
+from rlcompleter import Completer as RLCompleter
 
 from . import commands, historical_reader
 from .completing_reader import CompletingReader
-from .unix_console import UnixConsole, _error
+from .console import Console as ConsoleType
+
+Console: type[ConsoleType]
+_error: tuple[type[Exception], ...] | type[Exception]
+try:
+    from .unix_console import UnixConsole as Console, _error
+except ImportError:
+    from .windows_console import WindowsConsole as Console, _error
 
 ENCODING = sys.getdefaultencoding() or "latin1"
 
@@ -47,6 +55,14 @@
 from collections.abc import Callable, Collection
 from .types import Callback, Completer, KeySpec, CommandName
 
+TYPE_CHECKING = False
+
+if TYPE_CHECKING:
+    from typing import Any, Mapping
+
+
+MoreLinesCallable = Callable[[str], bool]
+
 
 __all__ = [
     "add_history",
@@ -81,7 +97,7 @@
 
 @dataclass
 class ReadlineConfig:
-    readline_completer: Completer | None = readline.get_completer()
+    readline_completer: Completer | None = None
     completer_delims: frozenset[str] = frozenset(" \t\n`~!@#$%^&*()-=+[{]}\\|;:'\",<>/?")
 
 
@@ -94,7 +110,8 @@ class ReadlineAlikeReader(historical_reader.HistoricalReader, CompletingReader):
 
     # Instance fields
     config: ReadlineConfig
-    more_lines: Callable[[str], bool] | None = None
+    more_lines: MoreLinesCallable | None = None
+    last_used_indentation: str | None = None
 
     def __post_init__(self) -> None:
         super().__post_init__()
@@ -153,6 +170,11 @@ def get_trimmed_history(self, maxlength: int) -> list[str]:
             cut = 0
         return self.history[cut:]
 
+    def update_last_used_indentation(self) -> None:
+        indentation = _get_first_indentation(self.buffer)
+        if indentation is not None:
+            self.last_used_indentation = indentation
+
     # --- simplified support for reading multiline Python statements ---
 
     def collect_keymap(self) -> tuple[tuple[KeySpec, CommandName], ...]:
@@ -207,25 +229,84 @@ def _get_previous_line_indent(buffer: list[str], pos: int) -> tuple[int, int | N
     return prevlinestart, indent
 
 
+def _get_first_indentation(buffer: list[str]) -> str | None:
+    indented_line_start = None
+    for i in range(len(buffer)):
+        if (i < len(buffer) - 1
+            and buffer[i] == "\n"
+            and buffer[i + 1] in " \t"
+        ):
+            indented_line_start = i + 1
+        elif indented_line_start is not None and buffer[i] not in " \t\n":
+            return ''.join(buffer[indented_line_start : i])
+    return None
+
+
+def _should_auto_indent(buffer: list[str], pos: int) -> bool:
+    # check if last character before "pos" is a colon, ignoring
+    # whitespaces and comments.
+    last_char = None
+    while pos > 0:
+        pos -= 1
+        if last_char is None:
+            if buffer[pos] not in " \t\n#":  # ignore whitespaces and comments
+                last_char = buffer[pos]
+        else:
+            # even if we found a non-whitespace character before
+            # original pos, we keep going back until newline is reached
+            # to make sure we ignore comments
+            if buffer[pos] == "\n":
+                break
+            if buffer[pos] == "#":
+                last_char = None
+    return last_char == ":"
+
+
 class maybe_accept(commands.Command):
     def do(self) -> None:
         r: ReadlineAlikeReader
         r = self.reader  # type: ignore[assignment]
         r.dirty = True  # this is needed to hide the completion menu, if visible
-        #
+
+        if self.reader.in_bracketed_paste:
+            r.insert("\n")
+            return
+
         # if there are already several lines and the cursor
         # is not on the last one, always insert a new \n.
         text = r.get_unicode()
+
         if "\n" in r.buffer[r.pos :] or (
             r.more_lines is not None and r.more_lines(text)
         ):
-            #
+            def _newline_before_pos():
+                before_idx = r.pos - 1
+                while before_idx > 0 and text[before_idx].isspace():
+                    before_idx -= 1
+                return text[before_idx : r.pos].count("\n") > 0
+
+            # if there's already a new line before the cursor then
+            # even if the cursor is followed by whitespace, we assume
+            # the user is trying to terminate the block
+            if _newline_before_pos() and text[r.pos:].isspace():
+                self.finish = True
+                return
+
             # auto-indent the next line like the previous line
             prevlinestart, indent = _get_previous_line_indent(r.buffer, r.pos)
             r.insert("\n")
-            if not self.reader.paste_mode and indent:
-                for i in range(prevlinestart, prevlinestart + indent):
-                    r.insert(r.buffer[i])
+            if not self.reader.paste_mode:
+                if indent:
+                    for i in range(prevlinestart, prevlinestart + indent):
+                        r.insert(r.buffer[i])
+                r.update_last_used_indentation()
+                if _should_auto_indent(r.buffer, r.pos):
+                    if r.last_used_indentation is not None:
+                        indentation = r.last_used_indentation
+                    else:
+                        # default
+                        indentation = " " * 4
+                    r.insert(indentation)
         elif not self.reader.paste_mode:
             self.finish = True
         else:
@@ -261,10 +342,10 @@ def do(self) -> None:
 class _ReadlineWrapper:
     f_in: int = -1
     f_out: int = -1
-    reader: ReadlineAlikeReader | None = None
+    reader: ReadlineAlikeReader | None = field(default=None, repr=False)
     saved_history_length: int = -1
     startup_hook: Callback | None = None
-    config: ReadlineConfig = field(default_factory=ReadlineConfig)
+    config: ReadlineConfig = field(default_factory=ReadlineConfig, repr=False)
 
     def __post_init__(self) -> None:
         if self.f_in == -1:
@@ -274,7 +355,7 @@ def __post_init__(self) -> None:
 
     def get_reader(self) -> ReadlineAlikeReader:
         if self.reader is None:
-            console = UnixConsole(self.f_in, self.f_out, encoding=ENCODING)
+            console = Console(self.f_in, self.f_out, encoding=ENCODING)
             self.reader = ReadlineAlikeReader(console=console, config=self.config)
         return self.reader
 
@@ -284,10 +365,14 @@ def input(self, prompt: object = "") -> str:
         except _error:
             assert raw_input is not None
             return raw_input(prompt)
-        reader.ps1 = str(prompt)
-        return reader.readline(startup_hook=self.startup_hook)
+        prompt_str = str(prompt)
+        reader.ps1 = prompt_str
+        sys.audit("builtins.input", prompt_str)
+        result = reader.readline(startup_hook=self.startup_hook)
+        sys.audit("builtins.input/result", result)
+        return result
 
-    def multiline_input(self, more_lines, ps1, ps2):
+    def multiline_input(self, more_lines: MoreLinesCallable, ps1: str, ps2: str) -> str:
         """Read an input on possibly multiple lines, asking for more
         lines as long as 'more_lines(unicodetext)' returns an object whose
         boolean value is true.
@@ -296,13 +381,15 @@ def multiline_input(self, more_lines, ps1, ps2):
         saved = reader.more_lines
         try:
             reader.more_lines = more_lines
-            reader.ps1 = reader.ps2 = ps1
-            reader.ps3 = reader.ps4 = ps2
-            return reader.readline(), reader.was_paste_mode_activated
+            reader.ps1 = ps1
+            reader.ps2 = ps1
+            reader.ps3 = ps2
+            reader.ps4 = ""
+            with warnings.catch_warnings(action="ignore"):
+                return reader.readline()
         finally:
             reader.more_lines = saved
             reader.paste_mode = False
-            reader.was_paste_mode_activated = False
 
     def parse_and_bind(self, string: str) -> None:
         pass  # XXX we don't support parsing GNU-readline-style init files
@@ -340,18 +427,22 @@ def read_history_file(self, filename: str = gethistoryfile()) -> None:
         history = self.get_reader().history
 
         with open(os.path.expanduser(filename), 'rb') as f:
-            lines = [line.decode('utf-8', errors='replace') for line in f.read().split(b'\n')]
+            is_editline = f.readline().startswith(b"_HiStOrY_V2_")
+            if is_editline:
+                encoding = "unicode-escape"
+            else:
+                f.seek(0)
+                encoding = "utf-8"
+
+            lines = [line.decode(encoding, errors='replace') for line in f.read().split(b'\n')]
             buffer = []
             for line in lines:
-                # Ignore readline history file header
-                if line.startswith("_HiStOrY_V2_"):
-                    continue
                 if line.endswith("\r"):
                     buffer.append(line+'\n')
                 else:
                     line = self._histline(line)
                     if buffer:
-                        line = "".join(buffer).replace("\r", "") + line
+                        line = self._histline("".join(buffer).replace("\r", "") + line)
                         del buffer[:]
                     if line:
                         history.append(line)
@@ -359,7 +450,9 @@ def read_history_file(self, filename: str = gethistoryfile()) -> None:
     def write_history_file(self, filename: str = gethistoryfile()) -> None:
         maxlength = self.saved_history_length
         history = self.get_reader().get_trimmed_history(maxlength)
-        with open(os.path.expanduser(filename), "w", encoding="utf-8") as f:
+        f = open(os.path.expanduser(filename), "w",
+                 encoding="utf-8", newline="\n")
+        with f:
             for entry in history:
                 entry = entry.replace("\n", "\r\n")  # multiline history support
                 f.write(entry + "\n")
@@ -396,15 +489,14 @@ def add_history(self, line: str) -> None:
     def set_startup_hook(self, function: Callback | None = None) -> None:
         self.startup_hook = function
 
-    def get_line_buffer(self) -> bytes:
-        buf_str = self.get_reader().get_unicode()
-        return buf_str.encode(ENCODING)
+    def get_line_buffer(self) -> str:
+        return self.get_reader().get_unicode()
 
     def _get_idxs(self) -> tuple[int, int]:
         start = cursor = self.get_reader().pos
         buf = self.get_line_buffer()
         for i in range(cursor - 1, -1, -1):
-            if str(buf[i]) in self.get_completer_delims():
+            if buf[i] in self.get_completer_delims():
                 break
             start = i
         return start, cursor
@@ -476,7 +568,7 @@ def stub(*args: object, **kwds: object) -> None:
 # ____________________________________________________________
 
 
-def _setup() -> None:
+def _setup(namespace: Mapping[str, Any]) -> None:
     global raw_input
     if raw_input is not None:
         return  # don't run _setup twice
@@ -492,9 +584,13 @@ def _setup() -> None:
     _wrapper.f_in = f_in
     _wrapper.f_out = f_out
 
+    # set up namespace in rlcompleter, which requires it to be a bona fide dict
+    if not isinstance(namespace, dict):
+        namespace = dict(namespace)
+    _wrapper.config.readline_completer = RLCompleter(namespace).complete
+
     # this is not really what readline.c does.  Better than nothing I guess
     import builtins
-
     raw_input = builtins.input
     builtins.input = _wrapper.input
 
diff --git a/Lib/_pyrepl/simple_interact.py b/Lib/_pyrepl/simple_interact.py
index 31b2097a78a226..66e66eae7ead9c 100644
--- a/Lib/_pyrepl/simple_interact.py
+++ b/Lib/_pyrepl/simple_interact.py
@@ -25,23 +25,35 @@
 
 from __future__ import annotations
 
-import _colorize  # type: ignore[import-not-found]
 import _sitebuiltins
 import linecache
+import functools
+import os
 import sys
 import code
-from types import ModuleType
 
 from .readline import _get_reader, multiline_input
-from .unix_console import _error
 
+TYPE_CHECKING = False
+
+if TYPE_CHECKING:
+    from typing import Any
+
+
+_error: tuple[type[Exception], ...] | type[Exception]
+try:
+    from .unix_console import _error
+except ModuleNotFoundError:
+    from .windows_console import _error
 
 def check() -> str:
     """Returns the error message if there is a problem initializing the state."""
     try:
         _get_reader()
     except _error as e:
-        return str(e) or repr(e) or "unknown error"
+        if term := os.environ.get("TERM", ""):
+            term = f"; TERM={term}"
+        return str(str(e) or repr(e) or "unknown error") + term
     return ""
 
 
@@ -56,40 +68,51 @@ def _strip_final_indent(text: str) -> str:
     return text
 
 
+def _clear_screen():
+    reader = _get_reader()
+    reader.scheduled_commands.append("clear_screen")
+
+
 REPL_COMMANDS = {
     "exit": _sitebuiltins.Quitter('exit', ''),
     "quit": _sitebuiltins.Quitter('quit' ,''),
     "copyright": _sitebuiltins._Printer('copyright', sys.copyright),
-    "help": "help",
+    "help": _sitebuiltins._Helper(),
+    "clear": _clear_screen,
+    "\x1a": _sitebuiltins.Quitter('\x1a', ''),
 }
 
-class InteractiveColoredConsole(code.InteractiveConsole):
-    def __init__(
-        self,
-        locals: dict[str, object] | None = None,
-        filename: str = "<console>",
-        *,
-        local_exit: bool = False,
-    ) -> None:
-        super().__init__(locals=locals, filename=filename, local_exit=local_exit)  # type: ignore[call-arg]
-        self.can_colorize = _colorize.can_colorize()
 
-    def showtraceback(self):
-        super().showtraceback(colorize=self.can_colorize)
+def _more_lines(console: code.InteractiveConsole, unicodetext: str) -> bool:
+    # ooh, look at the hack:
+    src = _strip_final_indent(unicodetext)
+    try:
+        code = console.compile(src, "<stdin>", "single")
+    except (OverflowError, SyntaxError, ValueError):
+        lines = src.splitlines(keepends=True)
+        if len(lines) == 1:
+            return False
+
+        last_line = lines[-1]
+        was_indented = last_line.startswith((" ", "\t"))
+        not_empty = last_line.strip() != ""
+        incomplete = not last_line.endswith("\n")
+        return (was_indented or not_empty) and incomplete
+    else:
+        return code is None
 
 
 def run_multiline_interactive_console(
-    mainmodule: ModuleType | None= None, future_flags: int = 0
+    console: code.InteractiveConsole,
+    *,
+    future_flags: int = 0,
 ) -> None:
-    import __main__
     from .readline import _setup
-    _setup()
-
-    mainmodule = mainmodule or __main__
-    console = InteractiveColoredConsole(mainmodule.__dict__, filename="<stdin>")
+    _setup(console.locals)
     if future_flags:
         console.compile.compiler.flags |= future_flags
 
+    more_lines = functools.partial(_more_lines, console)
     input_n = 0
 
     def maybe_run_command(statement: str) -> bool:
@@ -101,30 +124,12 @@ def maybe_run_command(statement: str) -> bool:
         reader.history.pop()  # skip internal commands in history
         command = REPL_COMMANDS[statement]
         if callable(command):
-            command()
-            return True
-
-        if isinstance(command, str):
-            # Internal readline commands require a prepared reader like
-            # inside multiline_input.
-            reader.prepare()
-            reader.refresh()
-            reader.do_cmd((command, [statement]))
-            reader.restore()
+            # Make sure that history does not change because of commands
+            with reader.suspend_history():
+                command()
             return True
-
         return False
 
-    def more_lines(unicodetext: str) -> bool:
-        # ooh, look at the hack:
-        src = _strip_final_indent(unicodetext)
-        try:
-            code = console.compile(src, "<stdin>", "single")
-        except (OverflowError, SyntaxError, ValueError):
-            return False
-        else:
-            return code is None
-
     while 1:
         try:
             try:
@@ -135,7 +140,7 @@ def more_lines(unicodetext: str) -> bool:
             ps1 = getattr(sys, "ps1", ">>> ")
             ps2 = getattr(sys, "ps2", "... ")
             try:
-                statement, contains_pasted_code = multiline_input(more_lines, ps1, ps2)
+                statement = multiline_input(more_lines, ps1, ps2)
             except EOFError:
                 break
 
@@ -144,13 +149,17 @@ def more_lines(unicodetext: str) -> bool:
 
             input_name = f"<python-input-{input_n}>"
             linecache._register_code(input_name, statement, "<stdin>")  # type: ignore[attr-defined]
-            symbol = "single" if not contains_pasted_code else "exec"
-            more = console.push(_strip_final_indent(statement), filename=input_name, _symbol=symbol)  # type: ignore[call-arg]
-            if contains_pasted_code and more:
-                more = console.push(_strip_final_indent(statement), filename=input_name, _symbol="single")  # type: ignore[call-arg]
+            more = console.push(_strip_final_indent(statement), filename=input_name, _symbol="single")  # type: ignore[call-arg]
             assert not more
             input_n += 1
         except KeyboardInterrupt:
+            r = _get_reader()
+            if r.input_trans is r.isearch_trans:
+                r.do_cmd(("isearch-end", [""]))
+            r.pos = len(r.get_unicode())
+            r.dirty = True
+            r.refresh()
+            r.in_bracketed_paste = False
             console.write("\nKeyboardInterrupt\n")
             console.resetbuffer()
         except MemoryError:
diff --git a/Lib/_pyrepl/unix_console.py b/Lib/_pyrepl/unix_console.py
index 605318c82ae2ea..e69c96b11598aa 100644
--- a/Lib/_pyrepl/unix_console.py
+++ b/Lib/_pyrepl/unix_console.py
@@ -27,9 +27,9 @@
 import select
 import signal
 import struct
-import sys
 import termios
 import time
+import platform
 from fcntl import ioctl
 
 from . import curses
@@ -40,9 +40,13 @@
 from .utils import wlen
 
 
+TYPE_CHECKING = False
+
 # types
-if False:
-    from typing import IO
+if TYPE_CHECKING:
+    from typing import IO, Literal, overload
+else:
+    overload = lambda func: None
 
 
 class InvalidTerminal(RuntimeError):
@@ -114,9 +118,12 @@ def __init__(self):
 
         def register(self, fd, flag):
             self.fd = fd
-
-        def poll(self):  # note: a 'timeout' argument would be *milliseconds*
-            r, w, e = select.select([self.fd], [], [])
+        # note: The 'timeout' argument is received as *milliseconds*
+        def poll(self, timeout: float | None = None) -> list[int]:
+            if timeout is None:
+                r, w, e = select.select([self.fd], [], [])
+            else:
+                r, w, e = select.select([self.fd], [], [], timeout/1000)
             return r
 
     poll = MinimalPoll  # type: ignore[assignment]
@@ -139,25 +146,22 @@ def __init__(
         - term (str): Terminal name.
         - encoding (str): Encoding to use for I/O operations.
         """
-
-        self.encoding = encoding or sys.getdefaultencoding()
-
-        if isinstance(f_in, int):
-            self.input_fd = f_in
-        else:
-            self.input_fd = f_in.fileno()
-
-        if isinstance(f_out, int):
-            self.output_fd = f_out
-        else:
-            self.output_fd = f_out.fileno()
+        super().__init__(f_in, f_out, term, encoding)
 
         self.pollob = poll()
         self.pollob.register(self.input_fd, select.POLLIN)
+        self.input_buffer = b""
+        self.input_buffer_pos = 0
         curses.setupterm(term or None, self.output_fd)
         self.term = term
 
-        def _my_getstr(cap, optional=0):
+        @overload
+        def _my_getstr(cap: str, optional: Literal[False] = False) -> bytes: ...
+
+        @overload
+        def _my_getstr(cap: str, optional: bool) -> bytes | None: ...
+
+        def _my_getstr(cap: str, optional: bool = False) -> bytes | None:
             r = curses.tigetstr(cap)
             if not optional and r is None:
                 raise InvalidTerminal(
@@ -195,6 +199,24 @@ def _my_getstr(cap, optional=0):
         self.event_queue = EventQueue(self.input_fd, self.encoding)
         self.cursor_visible = 1
 
+    def more_in_buffer(self) -> bool:
+        return bool(
+            self.input_buffer
+            and self.input_buffer_pos < len(self.input_buffer)
+        )
+
+    def __read(self, n: int) -> bytes:
+        if not self.more_in_buffer():
+            self.input_buffer = os.read(self.input_fd, 10000)
+
+        ret = self.input_buffer[self.input_buffer_pos : self.input_buffer_pos + n]
+        self.input_buffer_pos += len(ret)
+        if self.input_buffer_pos >= len(self.input_buffer):
+            self.input_buffer = b""
+            self.input_buffer_pos = 0
+        return ret
+
+
     def change_encoding(self, encoding: str) -> None:
         """
         Change the encoding used for I/O operations.
@@ -218,7 +240,7 @@ def refresh(self, screen, c_xy):
                 self.__hide_cursor()
                 self.__move(0, len(self.screen) - 1)
                 self.__write("\n")
-                self.__posxy = 0, len(self.screen)
+                self.posxy = 0, len(self.screen)
                 self.screen.append("")
         else:
             while len(self.screen) < len(screen):
@@ -228,7 +250,7 @@ def refresh(self, screen, c_xy):
             self.__gone_tall = 1
             self.__move = self.__move_tall
 
-        px, py = self.__posxy
+        px, py = self.posxy
         old_offset = offset = self.__offset
         height = self.height
 
@@ -249,7 +271,7 @@ def refresh(self, screen, c_xy):
         if old_offset > offset and self._ri:
             self.__hide_cursor()
             self.__write_code(self._cup, 0, 0)
-            self.__posxy = 0, old_offset
+            self.posxy = 0, old_offset
             for i in range(old_offset - offset):
                 self.__write_code(self._ri)
                 oldscr.pop(-1)
@@ -257,7 +279,7 @@ def refresh(self, screen, c_xy):
         elif old_offset < offset and self._ind:
             self.__hide_cursor()
             self.__write_code(self._cup, self.height - 1, 0)
-            self.__posxy = 0, old_offset + self.height - 1
+            self.posxy = 0, old_offset + self.height - 1
             for i in range(offset - old_offset):
                 self.__write_code(self._ind)
                 oldscr.pop(0)
@@ -277,13 +299,13 @@ def refresh(self, screen, c_xy):
         while y < len(oldscr):
             self.__hide_cursor()
             self.__move(0, y)
-            self.__posxy = 0, y
+            self.posxy = 0, y
             self.__write_code(self._el)
             y += 1
 
         self.__show_cursor()
 
-        self.screen = screen
+        self.screen = screen.copy()
         self.move_cursor(cx, cy)
         self.flushoutput()
 
@@ -299,7 +321,7 @@ def move_cursor(self, x, y):
             self.event_queue.insert(Event("scroll", None))
         else:
             self.__move(x, y)
-            self.__posxy = x, y
+            self.posxy = x, y
             self.flushoutput()
 
     def prepare(self):
@@ -308,23 +330,27 @@ def prepare(self):
         """
         self.__svtermstate = tcgetattr(self.input_fd)
         raw = self.__svtermstate.copy()
-        raw.iflag &= ~(termios.BRKINT | termios.INPCK | termios.ISTRIP | termios.IXON)
+        raw.iflag &= ~(termios.INPCK | termios.ISTRIP | termios.IXON)
         raw.oflag &= ~(termios.OPOST)
         raw.cflag &= ~(termios.CSIZE | termios.PARENB)
         raw.cflag |= termios.CS8
-        raw.lflag &= ~(
-            termios.ICANON | termios.ECHO | termios.IEXTEN | (termios.ISIG * 1)
-        )
+        raw.iflag |= termios.BRKINT
+        raw.lflag &= ~(termios.ICANON | termios.ECHO | termios.IEXTEN)
+        raw.lflag |= termios.ISIG
         raw.cc[termios.VMIN] = 1
         raw.cc[termios.VTIME] = 0
         tcsetattr(self.input_fd, termios.TCSADRAIN, raw)
 
+        # In macOS terminal we need to deactivate line wrap via ANSI escape code
+        if platform.system() == "Darwin" and os.getenv("TERM_PROGRAM") == "Apple_Terminal":
+            os.write(self.output_fd, b"\033[?7l")
+
         self.screen = []
         self.height, self.width = self.getheightwidth()
 
         self.__buffer = []
 
-        self.__posxy = 0, 0
+        self.posxy = 0, 0
         self.__gone_tall = 0
         self.__move = self.__move_short
         self.__offset = 0
@@ -347,6 +373,9 @@ def restore(self):
         self.flushoutput()
         tcsetattr(self.input_fd, termios.TCSADRAIN, self.__svtermstate)
 
+        if platform.system() == "Darwin" and os.getenv("TERM_PROGRAM") == "Apple_Terminal":
+            os.write(self.output_fd, b"\033[?7h")
+
         if hasattr(self, "old_sigwinch"):
             signal.signal(signal.SIGWINCH, self.old_sigwinch)
             del self.old_sigwinch
@@ -368,10 +397,13 @@ def get_event(self, block: bool = True) -> Event | None:
         Returns:
         - Event: Event object from the event queue.
         """
+        if not block and not self.wait(timeout=0):
+            return None
+
         while self.event_queue.empty():
             while True:
                 try:
-                    self.push_char(os.read(self.input_fd, 1))
+                    self.push_char(self.__read(1))
                 except OSError as err:
                     if err.errno == errno.EINTR:
                         if not self.event_queue.empty():
@@ -382,15 +414,17 @@ def get_event(self, block: bool = True) -> Event | None:
                         raise
                 else:
                     break
-            if not block:
-                break
         return self.event_queue.get()
 
-    def wait(self):
+    def wait(self, timeout: float | None = None) -> bool:
         """
         Wait for events on the console.
         """
-        self.pollob.poll()
+        return (
+            not self.event_queue.empty()
+            or self.more_in_buffer()
+            or bool(self.pollob.poll(timeout))
+        )
 
     def set_cursor_vis(self, visible):
         """
@@ -415,10 +449,12 @@ def getheightwidth(self):
             """
             try:
                 return int(os.environ["LINES"]), int(os.environ["COLUMNS"])
-            except KeyError:
-                height, width = struct.unpack(
-                    "hhhh", ioctl(self.input_fd, TIOCGWINSZ, b"\000" * 8)
-                )[0:2]
+            except (KeyError, TypeError, ValueError):
+                try:
+                    size = ioctl(self.input_fd, TIOCGWINSZ, b"\000" * 8)
+                except OSError:
+                    return 25, 80
+                height, width = struct.unpack("hhhh", size)[0:2]
                 if not height:
                     return 25, 80
                 return height, width
@@ -434,7 +470,7 @@ def getheightwidth(self):
             """
             try:
                 return int(os.environ["LINES"]), int(os.environ["COLUMNS"])
-            except KeyError:
+            except (KeyError, TypeError, ValueError):
                 return 25, 80
 
     def forgetinput(self):
@@ -489,7 +525,7 @@ def getpending(self):
                 e.raw += e.raw
 
             amount = struct.unpack("i", ioctl(self.input_fd, FIONREAD, b"\0\0\0\0"))[0]
-            raw = os.read(self.input_fd, amount)
+            raw = self.__read(amount)
             data = str(raw, self.encoding, "replace")
             e.data += data
             e.raw += raw
@@ -512,7 +548,7 @@ def getpending(self):
                 e.raw += e.raw
 
             amount = 10000
-            raw = os.read(self.input_fd, amount)
+            raw = self.__read(amount)
             data = str(raw, self.encoding, "replace")
             e.data += data
             e.raw += raw
@@ -525,9 +561,18 @@ def clear(self):
         self.__write_code(self._clear)
         self.__gone_tall = 1
         self.__move = self.__move_tall
-        self.__posxy = 0, 0
+        self.posxy = 0, 0
         self.screen = []
 
+    @property
+    def input_hook(self):
+        try:
+            import posix
+        except ImportError:
+            return None
+        if posix._is_inputhook_installed():
+            return posix._inputhook
+
     def __enable_bracketed_paste(self) -> None:
         os.write(self.output_fd, b"\x1b[?2004h")
 
@@ -582,22 +627,27 @@ def __write_changed_line(self, y, oldline, newline, px_coord):
         px_pos = 0
         j = 0
         for c in oldline:
-            if j >= px_coord: break
+            if j >= px_coord:
+                break
             j += wlen(c)
             px_pos += 1
 
         # reuse the oldline as much as possible, but stop as soon as we
         # encounter an ESCAPE, because it might be the start of an escape
         # sequene
-        while x_coord < minlen and oldline[x_pos] == newline[x_pos] and newline[x_pos] != "\x1b":
+        while (
+            x_coord < minlen
+            and oldline[x_pos] == newline[x_pos]
+            and newline[x_pos] != "\x1b"
+        ):
             x_coord += wlen(newline[x_pos])
             x_pos += 1
 
         # if we need to insert a single character right after the first detected change
         if oldline[x_pos:] == newline[x_pos + 1 :] and self.ich1:
             if (
-                y == self.__posxy[1]
-                and x_coord > self.__posxy[0]
+                y == self.posxy[1]
+                and x_coord > self.posxy[0]
                 and oldline[px_pos:x_pos] == newline[px_pos + 1 : x_pos + 1]
             ):
                 x_pos = px_pos
@@ -606,14 +656,18 @@ def __write_changed_line(self, y, oldline, newline, px_coord):
             self.__move(x_coord, y)
             self.__write_code(self.ich1)
             self.__write(newline[x_pos])
-            self.__posxy = x_coord + character_width, y
+            self.posxy = x_coord + character_width, y
 
         # if it's a single character change in the middle of the line
-        elif x_coord < minlen and oldline[x_pos + 1 :] == newline[x_pos + 1 :] and wlen(oldline[x_pos]) == wlen(newline[x_pos]):
+        elif (
+            x_coord < minlen
+            and oldline[x_pos + 1 :] == newline[x_pos + 1 :]
+            and wlen(oldline[x_pos]) == wlen(newline[x_pos])
+        ):
             character_width = wlen(newline[x_pos])
             self.__move(x_coord, y)
             self.__write(newline[x_pos])
-            self.__posxy = x_coord + character_width, y
+            self.posxy = x_coord + character_width, y
 
         # if this is the last character to fit in the line and we edit in the middle of the line
         elif (
@@ -625,14 +679,14 @@ def __write_changed_line(self, y, oldline, newline, px_coord):
         ):
             self.__hide_cursor()
             self.__move(self.width - 2, y)
-            self.__posxy = self.width - 2, y
+            self.posxy = self.width - 2, y
             self.__write_code(self.dch1)
 
             character_width = wlen(newline[x_pos])
             self.__move(x_coord, y)
             self.__write_code(self.ich1)
             self.__write(newline[x_pos])
-            self.__posxy = character_width + 1, y
+            self.posxy = character_width + 1, y
 
         else:
             self.__hide_cursor()
@@ -640,7 +694,7 @@ def __write_changed_line(self, y, oldline, newline, px_coord):
             if wlen(oldline) > wlen(newline):
                 self.__write_code(self._el)
             self.__write(newline[x_pos:])
-            self.__posxy = wlen(newline), y
+            self.posxy = wlen(newline), y
 
         if "\x1b" in newline:
             # ANSI escape characters are present, so we can't assume
@@ -659,32 +713,36 @@ def __maybe_write_code(self, fmt, *args):
             self.__write_code(fmt, *args)
 
     def __move_y_cuu1_cud1(self, y):
-        dy = y - self.__posxy[1]
+        assert self._cud1 is not None
+        assert self._cuu1 is not None
+        dy = y - self.posxy[1]
         if dy > 0:
             self.__write_code(dy * self._cud1)
         elif dy < 0:
             self.__write_code((-dy) * self._cuu1)
 
     def __move_y_cuu_cud(self, y):
-        dy = y - self.__posxy[1]
+        dy = y - self.posxy[1]
         if dy > 0:
             self.__write_code(self._cud, dy)
         elif dy < 0:
             self.__write_code(self._cuu, -dy)
 
-    def __move_x_hpa(self, x):
-        if x != self.__posxy[0]:
+    def __move_x_hpa(self, x: int) -> None:
+        if x != self.posxy[0]:
             self.__write_code(self._hpa, x)
 
-    def __move_x_cub1_cuf1(self, x):
-        dx = x - self.__posxy[0]
+    def __move_x_cub1_cuf1(self, x: int) -> None:
+        assert self._cuf1 is not None
+        assert self._cub1 is not None
+        dx = x - self.posxy[0]
         if dx > 0:
             self.__write_code(self._cuf1 * dx)
         elif dx < 0:
             self.__write_code(self._cub1 * (-dx))
 
-    def __move_x_cub_cuf(self, x):
-        dx = x - self.__posxy[0]
+    def __move_x_cub_cuf(self, x: int) -> None:
+        dx = x - self.posxy[0]
         if dx > 0:
             self.__write_code(self._cuf, dx)
         elif dx < 0:
@@ -714,12 +772,12 @@ def __show_cursor(self):
 
     def repaint(self):
         if not self.__gone_tall:
-            self.__posxy = 0, self.__posxy[1]
+            self.posxy = 0, self.posxy[1]
             self.__write("\r")
             ns = len(self.screen) * ["\000" * self.width]
             self.screen = ns
         else:
-            self.__posxy = 0, self.__offset
+            self.posxy = 0, self.__offset
             self.__move(0, self.__offset)
             ns = self.height * ["\000" * self.width]
             self.screen = ns
diff --git a/Lib/_pyrepl/utils.py b/Lib/_pyrepl/utils.py
index cd1df7c49a216d..4651717bd7e121 100644
--- a/Lib/_pyrepl/utils.py
+++ b/Lib/_pyrepl/utils.py
@@ -1,10 +1,14 @@
 import re
 import unicodedata
+import functools
 
 ANSI_ESCAPE_SEQUENCE = re.compile(r"\x1b\[[ -@]*[A-~]")
 
 
+@functools.cache
 def str_width(c: str) -> int:
+    if ord(c) < 128:
+        return 1
     w = unicodedata.east_asian_width(c)
     if w in ('N', 'Na', 'H', 'A'):
         return 1
@@ -12,7 +16,10 @@ def str_width(c: str) -> int:
 
 
 def wlen(s: str) -> int:
+    if len(s) == 1 and s != '\x1a':
+        return str_width(s)
     length = sum(str_width(i) for i in s)
-
     # remove lengths of any escape sequences
-    return length - sum(len(i) for i in ANSI_ESCAPE_SEQUENCE.findall(s))
+    sequence = ANSI_ESCAPE_SEQUENCE.findall(s)
+    ctrl_z_cnt = s.count('\x1a')
+    return length - sum(len(i) for i in sequence) + ctrl_z_cnt
diff --git a/Lib/_pyrepl/windows_console.py b/Lib/_pyrepl/windows_console.py
new file mode 100644
index 00000000000000..fffadd5e2ec28e
--- /dev/null
+++ b/Lib/_pyrepl/windows_console.py
@@ -0,0 +1,618 @@
+#   Copyright 2000-2004 Michael Hudson-Doyle <micahel@gmail.com>
+#
+#                        All Rights Reserved
+#
+#
+# Permission to use, copy, modify, and distribute this software and
+# its documentation for any purpose is hereby granted without fee,
+# provided that the above copyright notice appear in all copies and
+# that both that copyright notice and this permission notice appear in
+# supporting documentation.
+#
+# THE AUTHOR MICHAEL HUDSON DISCLAIMS ALL WARRANTIES WITH REGARD TO
+# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
+# INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+import io
+import os
+import sys
+import time
+import msvcrt
+
+from collections import deque
+import ctypes
+from ctypes.wintypes import (
+    _COORD,
+    WORD,
+    SMALL_RECT,
+    BOOL,
+    HANDLE,
+    CHAR,
+    DWORD,
+    WCHAR,
+    SHORT,
+)
+from ctypes import Structure, POINTER, Union
+from .console import Event, Console
+from .trace import trace
+from .utils import wlen
+
+try:
+    from ctypes import GetLastError, WinDLL, windll, WinError  # type: ignore[attr-defined]
+except:
+    # Keep MyPy happy off Windows
+    from ctypes import CDLL as WinDLL, cdll as windll
+
+    def GetLastError() -> int:
+        return 42
+
+    class WinError(OSError):  # type: ignore[no-redef]
+        def __init__(self, err: int | None, descr: str | None = None) -> None:
+            self.err = err
+            self.descr = descr
+
+
+TYPE_CHECKING = False
+
+if TYPE_CHECKING:
+    from typing import IO
+
+# Virtual-Key Codes: https://learn.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
+VK_MAP: dict[int, str] = {
+    0x23: "end",  # VK_END
+    0x24: "home",  # VK_HOME
+    0x25: "left",  # VK_LEFT
+    0x26: "up",  # VK_UP
+    0x27: "right",  # VK_RIGHT
+    0x28: "down",  # VK_DOWN
+    0x2E: "delete",  # VK_DELETE
+    0x70: "f1",  # VK_F1
+    0x71: "f2",  # VK_F2
+    0x72: "f3",  # VK_F3
+    0x73: "f4",  # VK_F4
+    0x74: "f5",  # VK_F5
+    0x75: "f6",  # VK_F6
+    0x76: "f7",  # VK_F7
+    0x77: "f8",  # VK_F8
+    0x78: "f9",  # VK_F9
+    0x79: "f10",  # VK_F10
+    0x7A: "f11",  # VK_F11
+    0x7B: "f12",  # VK_F12
+    0x7C: "f13",  # VK_F13
+    0x7D: "f14",  # VK_F14
+    0x7E: "f15",  # VK_F15
+    0x7F: "f16",  # VK_F16
+    0x80: "f17",  # VK_F17
+    0x81: "f18",  # VK_F18
+    0x82: "f19",  # VK_F19
+    0x83: "f20",  # VK_F20
+}
+
+# Console escape codes: https://learn.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences
+ERASE_IN_LINE = "\x1b[K"
+MOVE_LEFT = "\x1b[{}D"
+MOVE_RIGHT = "\x1b[{}C"
+MOVE_UP = "\x1b[{}A"
+MOVE_DOWN = "\x1b[{}B"
+CLEAR = "\x1b[H\x1b[J"
+
+
+class _error(Exception):
+    pass
+
+
+class WindowsConsole(Console):
+    def __init__(
+        self,
+        f_in: IO[bytes] | int = 0,
+        f_out: IO[bytes] | int = 1,
+        term: str = "",
+        encoding: str = "",
+    ):
+        super().__init__(f_in, f_out, term, encoding)
+
+        SetConsoleMode(
+            OutHandle,
+            ENABLE_WRAP_AT_EOL_OUTPUT
+            | ENABLE_PROCESSED_OUTPUT
+            | ENABLE_VIRTUAL_TERMINAL_PROCESSING,
+        )
+        self.screen: list[str] = []
+        self.width = 80
+        self.height = 25
+        self.__offset = 0
+        self.event_queue: deque[Event] = deque()
+        try:
+            self.out = io._WindowsConsoleIO(self.output_fd, "w")  # type: ignore[attr-defined]
+        except ValueError:
+            # Console I/O is redirected, fallback...
+            self.out = None
+
+    def refresh(self, screen: list[str], c_xy: tuple[int, int]) -> None:
+        """
+        Refresh the console screen.
+
+        Parameters:
+        - screen (list): List of strings representing the screen contents.
+        - c_xy (tuple): Cursor position (x, y) on the screen.
+        """
+        cx, cy = c_xy
+
+        while len(self.screen) < min(len(screen), self.height):
+            self._hide_cursor()
+            self._move_relative(0, len(self.screen) - 1)
+            self.__write("\n")
+            self.posxy = 0, len(self.screen)
+            self.screen.append("")
+
+        px, py = self.posxy
+        old_offset = offset = self.__offset
+        height = self.height
+
+        # we make sure the cursor is on the screen, and that we're
+        # using all of the screen if we can
+        if cy < offset:
+            offset = cy
+        elif cy >= offset + height:
+            offset = cy - height + 1
+            scroll_lines = offset - old_offset
+
+            # Scrolling the buffer as the current input is greater than the visible
+            # portion of the window.  We need to scroll the visible portion and the
+            # entire history
+            self._scroll(scroll_lines, self._getscrollbacksize())
+            self.posxy = self.posxy[0], self.posxy[1] + scroll_lines
+            self.__offset += scroll_lines
+
+            for i in range(scroll_lines):
+                self.screen.append("")
+        elif offset > 0 and len(screen) < offset + height:
+            offset = max(len(screen) - height, 0)
+            screen.append("")
+
+        oldscr = self.screen[old_offset : old_offset + height]
+        newscr = screen[offset : offset + height]
+
+        self.__offset = offset
+
+        self._hide_cursor()
+        for (
+            y,
+            oldline,
+            newline,
+        ) in zip(range(offset, offset + height), oldscr, newscr):
+            if oldline != newline:
+                self.__write_changed_line(y, oldline, newline, px)
+
+        y = len(newscr)
+        while y < len(oldscr):
+            self._move_relative(0, y)
+            self.posxy = 0, y
+            self._erase_to_end()
+            y += 1
+
+        self._show_cursor()
+
+        self.screen = screen
+        self.move_cursor(cx, cy)
+
+    @property
+    def input_hook(self):
+        try:
+            import nt
+        except ImportError:
+            return None
+        if nt._is_inputhook_installed():
+            return nt._inputhook
+
+    def __write_changed_line(
+        self, y: int, oldline: str, newline: str, px_coord: int
+    ) -> None:
+        # this is frustrating; there's no reason to test (say)
+        # self.dch1 inside the loop -- but alternative ways of
+        # structuring this function are equally painful (I'm trying to
+        # avoid writing code generators these days...)
+        minlen = min(wlen(oldline), wlen(newline))
+        x_pos = 0
+        x_coord = 0
+
+        px_pos = 0
+        j = 0
+        for c in oldline:
+            if j >= px_coord:
+                break
+            j += wlen(c)
+            px_pos += 1
+
+        # reuse the oldline as much as possible, but stop as soon as we
+        # encounter an ESCAPE, because it might be the start of an escape
+        # sequene
+        while (
+            x_coord < minlen
+            and oldline[x_pos] == newline[x_pos]
+            and newline[x_pos] != "\x1b"
+        ):
+            x_coord += wlen(newline[x_pos])
+            x_pos += 1
+
+        self._hide_cursor()
+        self._move_relative(x_coord, y)
+        if wlen(oldline) > wlen(newline):
+            self._erase_to_end()
+
+        self.__write(newline[x_pos:])
+        if wlen(newline) == self.width:
+            # If we wrapped we want to start at the next line
+            self._move_relative(0, y + 1)
+            self.posxy = 0, y + 1
+        else:
+            self.posxy = wlen(newline), y
+
+            if "\x1b" in newline or y != self.posxy[1] or '\x1a' in newline:
+                # ANSI escape characters are present, so we can't assume
+                # anything about the position of the cursor.  Moving the cursor
+                # to the left margin should work to get to a known position.
+                self.move_cursor(0, y)
+
+    def _scroll(
+        self, top: int, bottom: int, left: int | None = None, right: int | None = None
+    ) -> None:
+        scroll_rect = SMALL_RECT()
+        scroll_rect.Top = SHORT(top)
+        scroll_rect.Bottom = SHORT(bottom)
+        scroll_rect.Left = SHORT(0 if left is None else left)
+        scroll_rect.Right = SHORT(
+            self.getheightwidth()[1] - 1 if right is None else right
+        )
+        destination_origin = _COORD()
+        fill_info = CHAR_INFO()
+        fill_info.UnicodeChar = " "
+
+        if not ScrollConsoleScreenBuffer(
+            OutHandle, scroll_rect, None, destination_origin, fill_info
+        ):
+            raise WinError(GetLastError())
+
+    def _hide_cursor(self):
+        self.__write("\x1b[?25l")
+
+    def _show_cursor(self):
+        self.__write("\x1b[?25h")
+
+    def _enable_blinking(self):
+        self.__write("\x1b[?12h")
+
+    def _disable_blinking(self):
+        self.__write("\x1b[?12l")
+
+    def __write(self, text: str) -> None:
+        if "\x1a" in text:
+            text = ''.join(["^Z" if x == '\x1a' else x for x in text])
+
+        if self.out is not None:
+            self.out.write(text.encode(self.encoding, "replace"))
+            self.out.flush()
+        else:
+            os.write(self.output_fd, text.encode(self.encoding, "replace"))
+
+    @property
+    def screen_xy(self) -> tuple[int, int]:
+        info = CONSOLE_SCREEN_BUFFER_INFO()
+        if not GetConsoleScreenBufferInfo(OutHandle, info):
+            raise WinError(GetLastError())
+        return info.dwCursorPosition.X, info.dwCursorPosition.Y
+
+    def _erase_to_end(self) -> None:
+        self.__write(ERASE_IN_LINE)
+
+    def prepare(self) -> None:
+        trace("prepare")
+        self.screen = []
+        self.height, self.width = self.getheightwidth()
+
+        self.posxy = 0, 0
+        self.__gone_tall = 0
+        self.__offset = 0
+
+    def restore(self) -> None:
+        pass
+
+    def _move_relative(self, x: int, y: int) -> None:
+        """Moves relative to the current posxy"""
+        dx = x - self.posxy[0]
+        dy = y - self.posxy[1]
+        if dx < 0:
+            self.__write(MOVE_LEFT.format(-dx))
+        elif dx > 0:
+            self.__write(MOVE_RIGHT.format(dx))
+
+        if dy < 0:
+            self.__write(MOVE_UP.format(-dy))
+        elif dy > 0:
+            self.__write(MOVE_DOWN.format(dy))
+
+    def move_cursor(self, x: int, y: int) -> None:
+        if x < 0 or y < 0:
+            raise ValueError(f"Bad cursor position {x}, {y}")
+
+        if y < self.__offset or y >= self.__offset + self.height:
+            self.event_queue.insert(0, Event("scroll", ""))
+        else:
+            self._move_relative(x, y)
+            self.posxy = x, y
+
+    def set_cursor_vis(self, visible: bool) -> None:
+        if visible:
+            self._show_cursor()
+        else:
+            self._hide_cursor()
+
+    def getheightwidth(self) -> tuple[int, int]:
+        """Return (height, width) where height and width are the height
+        and width of the terminal window in characters."""
+        info = CONSOLE_SCREEN_BUFFER_INFO()
+        if not GetConsoleScreenBufferInfo(OutHandle, info):
+            raise WinError(GetLastError())
+        return (
+            info.srWindow.Bottom - info.srWindow.Top + 1,
+            info.srWindow.Right - info.srWindow.Left + 1,
+        )
+
+    def _getscrollbacksize(self) -> int:
+        info = CONSOLE_SCREEN_BUFFER_INFO()
+        if not GetConsoleScreenBufferInfo(OutHandle, info):
+            raise WinError(GetLastError())
+
+        return info.srWindow.Bottom  # type: ignore[no-any-return]
+
+    def _read_input(self, block: bool = True) -> INPUT_RECORD | None:
+        if not block:
+            events = DWORD()
+            if not GetNumberOfConsoleInputEvents(InHandle, events):
+                raise WinError(GetLastError())
+            if not events.value:
+                return None
+
+        rec = INPUT_RECORD()
+        read = DWORD()
+        if not ReadConsoleInput(InHandle, rec, 1, read):
+            raise WinError(GetLastError())
+
+        return rec
+
+    def get_event(self, block: bool = True) -> Event | None:
+        """Return an Event instance.  Returns None if |block| is false
+        and there is no event pending, otherwise waits for the
+        completion of an event."""
+        if self.event_queue:
+            return self.event_queue.pop()
+
+        while True:
+            rec = self._read_input(block)
+            if rec is None:
+                return None
+
+            if rec.EventType == WINDOW_BUFFER_SIZE_EVENT:
+                return Event("resize", "")
+
+            if rec.EventType != KEY_EVENT or not rec.Event.KeyEvent.bKeyDown:
+                # Only process keys and keydown events
+                if block:
+                    continue
+                return None
+
+            key = rec.Event.KeyEvent.uChar.UnicodeChar
+
+            if rec.Event.KeyEvent.uChar.UnicodeChar == "\r":
+                # Make enter make unix-like
+                return Event(evt="key", data="\n", raw=b"\n")
+            elif rec.Event.KeyEvent.wVirtualKeyCode == 8:
+                # Turn backspace directly into the command
+                return Event(
+                    evt="key",
+                    data="backspace",
+                    raw=rec.Event.KeyEvent.uChar.UnicodeChar,
+                )
+            elif rec.Event.KeyEvent.uChar.UnicodeChar == "\x00":
+                # Handle special keys like arrow keys and translate them into the appropriate command
+                code = VK_MAP.get(rec.Event.KeyEvent.wVirtualKeyCode)
+                if code:
+                    return Event(
+                        evt="key", data=code, raw=rec.Event.KeyEvent.uChar.UnicodeChar
+                    )
+                if block:
+                    continue
+
+                return None
+
+            return Event(evt="key", data=key, raw=rec.Event.KeyEvent.uChar.UnicodeChar)
+
+    def push_char(self, char: int | bytes) -> None:
+        """
+        Push a character to the console event queue.
+        """
+        raise NotImplementedError("push_char not supported on Windows")
+
+    def beep(self) -> None:
+        self.__write("\x07")
+
+    def clear(self) -> None:
+        """Wipe the screen"""
+        self.__write(CLEAR)
+        self.posxy = 0, 0
+        self.screen = [""]
+
+    def finish(self) -> None:
+        """Move the cursor to the end of the display and otherwise get
+        ready for end.  XXX could be merged with restore?  Hmm."""
+        y = len(self.screen) - 1
+        while y >= 0 and not self.screen[y]:
+            y -= 1
+        self._move_relative(0, min(y, self.height + self.__offset - 1))
+        self.__write("\r\n")
+
+    def flushoutput(self) -> None:
+        """Flush all output to the screen (assuming there's some
+        buffering going on somewhere).
+
+        All output on Windows is unbuffered so this is a nop"""
+        pass
+
+    def forgetinput(self) -> None:
+        """Forget all pending, but not yet processed input."""
+        if not FlushConsoleInputBuffer(InHandle):
+            raise WinError(GetLastError())
+
+    def getpending(self) -> Event:
+        """Return the characters that have been typed but not yet
+        processed."""
+        return Event("key", "", b"")
+
+    def wait(self, timeout: float | None) -> bool:
+        """Wait for an event."""
+        # Poor man's Windows select loop
+        start_time = time.time()
+        while True:
+            if msvcrt.kbhit(): # type: ignore[attr-defined]
+                return True
+            if timeout and time.time() - start_time > timeout / 1000:
+                return False
+            time.sleep(0.01)
+
+    def repaint(self) -> None:
+        raise NotImplementedError("No repaint support")
+
+
+# Windows interop
+class CONSOLE_SCREEN_BUFFER_INFO(Structure):
+    _fields_ = [
+        ("dwSize", _COORD),
+        ("dwCursorPosition", _COORD),
+        ("wAttributes", WORD),
+        ("srWindow", SMALL_RECT),
+        ("dwMaximumWindowSize", _COORD),
+    ]
+
+
+class CONSOLE_CURSOR_INFO(Structure):
+    _fields_ = [
+        ("dwSize", DWORD),
+        ("bVisible", BOOL),
+    ]
+
+
+class CHAR_INFO(Structure):
+    _fields_ = [
+        ("UnicodeChar", WCHAR),
+        ("Attributes", WORD),
+    ]
+
+
+class Char(Union):
+    _fields_ = [
+        ("UnicodeChar", WCHAR),
+        ("Char", CHAR),
+    ]
+
+
+class KeyEvent(ctypes.Structure):
+    _fields_ = [
+        ("bKeyDown", BOOL),
+        ("wRepeatCount", WORD),
+        ("wVirtualKeyCode", WORD),
+        ("wVirtualScanCode", WORD),
+        ("uChar", Char),
+        ("dwControlKeyState", DWORD),
+    ]
+
+
+class WindowsBufferSizeEvent(ctypes.Structure):
+    _fields_ = [("dwSize", _COORD)]
+
+
+class ConsoleEvent(ctypes.Union):
+    _fields_ = [
+        ("KeyEvent", KeyEvent),
+        ("WindowsBufferSizeEvent", WindowsBufferSizeEvent),
+    ]
+
+
+class INPUT_RECORD(Structure):
+    _fields_ = [("EventType", WORD), ("Event", ConsoleEvent)]
+
+
+KEY_EVENT = 0x01
+FOCUS_EVENT = 0x10
+MENU_EVENT = 0x08
+MOUSE_EVENT = 0x02
+WINDOW_BUFFER_SIZE_EVENT = 0x04
+
+ENABLE_PROCESSED_OUTPUT = 0x01
+ENABLE_WRAP_AT_EOL_OUTPUT = 0x02
+ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x04
+
+STD_INPUT_HANDLE = -10
+STD_OUTPUT_HANDLE = -11
+
+if sys.platform == "win32":
+    _KERNEL32 = WinDLL("kernel32", use_last_error=True)
+
+    GetStdHandle = windll.kernel32.GetStdHandle
+    GetStdHandle.argtypes = [DWORD]
+    GetStdHandle.restype = HANDLE
+
+    GetConsoleScreenBufferInfo = _KERNEL32.GetConsoleScreenBufferInfo
+    GetConsoleScreenBufferInfo.argtypes = [
+        HANDLE,
+        ctypes.POINTER(CONSOLE_SCREEN_BUFFER_INFO),
+    ]
+    GetConsoleScreenBufferInfo.restype = BOOL
+
+    ScrollConsoleScreenBuffer = _KERNEL32.ScrollConsoleScreenBufferW
+    ScrollConsoleScreenBuffer.argtypes = [
+        HANDLE,
+        POINTER(SMALL_RECT),
+        POINTER(SMALL_RECT),
+        _COORD,
+        POINTER(CHAR_INFO),
+    ]
+    ScrollConsoleScreenBuffer.restype = BOOL
+
+    SetConsoleMode = _KERNEL32.SetConsoleMode
+    SetConsoleMode.argtypes = [HANDLE, DWORD]
+    SetConsoleMode.restype = BOOL
+
+    ReadConsoleInput = _KERNEL32.ReadConsoleInputW
+    ReadConsoleInput.argtypes = [HANDLE, POINTER(INPUT_RECORD), DWORD, POINTER(DWORD)]
+    ReadConsoleInput.restype = BOOL
+
+    GetNumberOfConsoleInputEvents = _KERNEL32.GetNumberOfConsoleInputEvents
+    GetNumberOfConsoleInputEvents.argtypes = [HANDLE, POINTER(DWORD)]
+    GetNumberOfConsoleInputEvents.restype = BOOL
+
+    FlushConsoleInputBuffer = _KERNEL32.FlushConsoleInputBuffer
+    FlushConsoleInputBuffer.argtypes = [HANDLE]
+    FlushConsoleInputBuffer.restype = BOOL
+
+    OutHandle = GetStdHandle(STD_OUTPUT_HANDLE)
+    InHandle = GetStdHandle(STD_INPUT_HANDLE)
+else:
+
+    def _win_only(*args, **kwargs):
+        raise NotImplementedError("Windows only")
+
+    GetStdHandle = _win_only
+    GetConsoleScreenBufferInfo = _win_only
+    ScrollConsoleScreenBuffer = _win_only
+    SetConsoleMode = _win_only
+    ReadConsoleInput = _win_only
+    GetNumberOfConsoleInputEvents = _win_only
+    FlushConsoleInputBuffer = _win_only
+    OutHandle = 0
+    InHandle = 0
diff --git a/Lib/_strptime.py b/Lib/_strptime.py
index e42af75af74bf5..8d763e5bd331e5 100644
--- a/Lib/_strptime.py
+++ b/Lib/_strptime.py
@@ -15,6 +15,7 @@
 import locale
 import calendar
 from re import compile as re_compile
+from re import sub as re_sub
 from re import IGNORECASE
 from re import escape as re_escape
 from datetime import (date as datetime_date,
@@ -28,6 +29,18 @@ def _getlang():
     # Figure out what the current language is set to.
     return locale.getlocale(locale.LC_TIME)
 
+def _findall(haystack, needle):
+    # Find all positions of needle in haystack.
+    if not needle:
+        return
+    i = 0
+    while True:
+        i = haystack.find(needle, i)
+        if i < 0:
+            break
+        yield i
+        i += len(needle)
+
 class LocaleTime(object):
     """Stores and handles locale-specific information related to time.
 
@@ -102,7 +115,8 @@ def __calc_am_pm(self):
         am_pm = []
         for hour in (1, 22):
             time_tuple = time.struct_time((1999,3,17,hour,44,55,2,76,0))
-            am_pm.append(time.strftime("%p", time_tuple).lower())
+            # br_FR has AM/PM info (' ',' ').
+            am_pm.append(time.strftime("%p", time_tuple).lower().strip())
         self.am_pm = am_pm
 
     def __calc_date_time(self):
@@ -114,42 +128,130 @@ def __calc_date_time(self):
         # values within the format string is very important; it eliminates
         # possible ambiguity for what something represents.
         time_tuple = time.struct_time((1999,3,17,22,44,55,2,76,0))
-        date_time = [None, None, None]
-        date_time[0] = time.strftime("%c", time_tuple).lower()
-        date_time[1] = time.strftime("%x", time_tuple).lower()
-        date_time[2] = time.strftime("%X", time_tuple).lower()
-        replacement_pairs = [('%', '%%'), (self.f_weekday[2], '%A'),
-                    (self.f_month[3], '%B'), (self.a_weekday[2], '%a'),
-                    (self.a_month[3], '%b'), (self.am_pm[1], '%p'),
-                    ('1999', '%Y'), ('99', '%y'), ('22', '%H'),
-                    ('44', '%M'), ('55', '%S'), ('76', '%j'),
-                    ('17', '%d'), ('03', '%m'), ('3', '%m'),
-                    # '3' needed for when no leading zero.
-                    ('2', '%w'), ('10', '%I')]
-        replacement_pairs.extend([(tz, "%Z") for tz_values in self.timezone
-                                                for tz in tz_values])
-        for offset,directive in ((0,'%c'), (1,'%x'), (2,'%X')):
-            current_format = date_time[offset]
-            for old, new in replacement_pairs:
+        time_tuple2 = time.struct_time((1999,1,3,1,1,1,6,3,0))
+        replacement_pairs = [
+            ('1999', '%Y'), ('99', '%y'), ('22', '%H'),
+            ('44', '%M'), ('55', '%S'), ('76', '%j'),
+            ('17', '%d'), ('03', '%m'), ('3', '%m'),
+            # '3' needed for when no leading zero.
+            ('2', '%w'), ('10', '%I'),
+            # Non-ASCII digits
+            ('\u0661\u0669\u0669\u0669', '%Y'),
+            ('\u0669\u0669', '%Oy'),
+            ('\u0662\u0662', '%OH'),
+            ('\u0664\u0664', '%OM'),
+            ('\u0665\u0665', '%OS'),
+            ('\u0661\u0667', '%Od'),
+            ('\u0660\u0663', '%Om'),
+            ('\u0663', '%Om'),
+            ('\u0662', '%Ow'),
+            ('\u0661\u0660', '%OI'),
+        ]
+        date_time = []
+        for directive in ('%c', '%x', '%X'):
+            current_format = time.strftime(directive, time_tuple).lower()
+            current_format = current_format.replace('%', '%%')
+            # The month and the day of the week formats are treated specially
+            # because of a possible ambiguity in some locales where the full
+            # and abbreviated names are equal or names of different types
+            # are equal. See doc of __find_month_format for more details.
+            lst, fmt = self.__find_weekday_format(directive)
+            if lst:
+                current_format = current_format.replace(lst[2], fmt, 1)
+            lst, fmt = self.__find_month_format(directive)
+            if lst:
+                current_format = current_format.replace(lst[3], fmt, 1)
+            if self.am_pm[1]:
                 # Must deal with possible lack of locale info
                 # manifesting itself as the empty string (e.g., Swedish's
                 # lack of AM/PM info) or a platform returning a tuple of empty
                 # strings (e.g., MacOS 9 having timezone as ('','')).
-                if old:
-                    current_format = current_format.replace(old, new)
+                current_format = current_format.replace(self.am_pm[1], '%p')
+            for tz_values in self.timezone:
+                for tz in tz_values:
+                    if tz:
+                        current_format = current_format.replace(tz, "%Z")
+            # Transform all non-ASCII digits to digits in range U+0660 to U+0669.
+            current_format = re_sub(r'\d(?<![0-9])',
+                                    lambda m: chr(0x0660 + int(m[0])),
+                                    current_format)
+            for old, new in replacement_pairs:
+                current_format = current_format.replace(old, new)
             # If %W is used, then Sunday, 2005-01-03 will fall on week 0 since
             # 2005-01-03 occurs before the first Monday of the year.  Otherwise
             # %U is used.
-            time_tuple = time.struct_time((1999,1,3,1,1,1,6,3,0))
-            if '00' in time.strftime(directive, time_tuple):
+            if '00' in time.strftime(directive, time_tuple2):
                 U_W = '%W'
             else:
                 U_W = '%U'
-            date_time[offset] = current_format.replace('11', U_W)
+            current_format = current_format.replace('11', U_W)
+            date_time.append(current_format)
         self.LC_date_time = date_time[0]
         self.LC_date = date_time[1]
         self.LC_time = date_time[2]
 
+    def __find_month_format(self, directive):
+        """Find the month format appropriate for the current locale.
+
+        In some locales (for example French and Hebrew), the default month
+        used in __calc_date_time has the same name in full and abbreviated
+        form.  Also, the month name can by accident match other part of the
+        representation: the day of the week name (for example in Morisyen)
+        or the month number (for example in Japanese).  Thus, cycle months
+        of the year and find all positions that match the month name for
+        each month,  If no common positions are found, the representation
+        does not use the month name.
+        """
+        full_indices = abbr_indices = None
+        for m in range(1, 13):
+            time_tuple = time.struct_time((1999, m, 17, 22, 44, 55, 2, 76, 0))
+            datetime = time.strftime(directive, time_tuple).lower()
+            indices = set(_findall(datetime, self.f_month[m]))
+            if full_indices is None:
+                full_indices = indices
+            else:
+                full_indices &= indices
+            indices = set(_findall(datetime, self.a_month[m]))
+            if abbr_indices is None:
+                abbr_indices = indices
+            else:
+                abbr_indices &= indices
+            if not full_indices and not abbr_indices:
+                return None, None
+        if full_indices:
+            return self.f_month, '%B'
+        if abbr_indices:
+            return self.a_month, '%b'
+        return None, None
+
+    def __find_weekday_format(self, directive):
+        """Find the day of the week format appropriate for the current locale.
+
+        Similar to __find_month_format().
+        """
+        full_indices = abbr_indices = None
+        for wd in range(7):
+            time_tuple = time.struct_time((1999, 3, 17, 22, 44, 55, wd, 76, 0))
+            datetime = time.strftime(directive, time_tuple).lower()
+            indices = set(_findall(datetime, self.f_weekday[wd]))
+            if full_indices is None:
+                full_indices = indices
+            else:
+                full_indices &= indices
+            if self.f_weekday[wd] != self.a_weekday[wd]:
+                indices = set(_findall(datetime, self.a_weekday[wd]))
+            if abbr_indices is None:
+                abbr_indices = indices
+            else:
+                abbr_indices &= indices
+            if not full_indices and not abbr_indices:
+                return None, None
+        if full_indices:
+            return self.f_weekday, '%A'
+        if abbr_indices:
+            return self.a_weekday, '%a'
+        return None, None
+
     def __calc_timezone(self):
         # Set self.timezone by using time.tzname.
         # Do not worry about possibility of time.tzname[0] == time.tzname[1]
@@ -182,12 +284,12 @@ def __init__(self, locale_time=None):
         else:
             self.locale_time = LocaleTime()
         base = super()
-        base.__init__({
+        mapping = {
             # The " [1-9]" part of the regex is to make %c from ANSI C work
             'd': r"(?P<d>3[0-1]|[1-2]\d|0[1-9]|[1-9]| [1-9])",
             'f': r"(?P<f>[0-9]{1,6})",
             'H': r"(?P<H>2[0-3]|[0-1]\d|\d)",
-            'I': r"(?P<I>1[0-2]|0[1-9]|[1-9])",
+            'I': r"(?P<I>1[0-2]|0[1-9]|[1-9]| [1-9])",
             'G': r"(?P<G>\d\d\d\d)",
             'j': r"(?P<j>36[0-6]|3[0-5]\d|[1-2]\d\d|0[1-9]\d|00[1-9]|[1-9]\d|0[1-9]|[1-9])",
             'm': r"(?P<m>1[0-2]|0[1-9]|[1-9])",
@@ -199,8 +301,6 @@ def __init__(self, locale_time=None):
             'V': r"(?P<V>5[0-3]|0[1-9]|[1-4]\d|\d)",
             # W is set below by using 'U'
             'y': r"(?P<y>\d\d)",
-            #XXX: Does 'Y' need to worry about having less or more than
-            #     4 digits?
             'Y': r"(?P<Y>\d\d\d\d)",
             'z': r"(?P<z>[+-]\d\d:?[0-5]\d(:?[0-5]\d(\.\d{1,6})?)?|(?-i:Z))",
             'A': self.__seqToRE(self.locale_time.f_weekday, 'A'),
@@ -211,11 +311,15 @@ def __init__(self, locale_time=None):
             'Z': self.__seqToRE((tz for tz_names in self.locale_time.timezone
                                         for tz in tz_names),
                                 'Z'),
-            '%': '%'})
-        base.__setitem__('W', base.__getitem__('U').replace('U', 'W'))
-        base.__setitem__('c', self.pattern(self.locale_time.LC_date_time))
-        base.__setitem__('x', self.pattern(self.locale_time.LC_date))
+            '%': '%'}
+        for d in 'dmyHIMS':
+            mapping['O' + d] = r'(?P<%s>\d\d|\d| \d)' % d
+        mapping['Ow'] = r'(?P<w>\d)'
+        mapping['W'] = mapping['U'].replace('U', 'W')
+        base.__init__(mapping)
         base.__setitem__('X', self.pattern(self.locale_time.LC_time))
+        base.__setitem__('x', self.pattern(self.locale_time.LC_date))
+        base.__setitem__('c', self.pattern(self.locale_time.LC_date_time))
 
     def __seqToRE(self, to_convert, directive):
         """Convert a list to a regex string for matching a directive.
@@ -243,28 +347,25 @@ def pattern(self, format):
         regex syntax are escaped.
 
         """
-        processed_format = ''
         # The sub() call escapes all characters that might be misconstrued
         # as regex syntax.  Cannot use re.escape since we have to deal with
         # format directives (%m, etc.).
-        regex_chars = re_compile(r"([\\.^$*+?\(\){}\[\]|])")
-        format = regex_chars.sub(r"\\\1", format)
-        whitespace_replacement = re_compile(r'\s+')
-        format = whitespace_replacement.sub(r'\\s+', format)
+        format = re_sub(r"([\\.^$*+?\(\){}\[\]|])", r"\\\1", format)
+        format = re_sub(r'\s+', r'\\s+', format)
+        format = re_sub(r"'", "['\u02bc]", format)  # needed for br_FR
         year_in_format = False
         day_of_month_in_format = False
-        while '%' in format:
-            directive_index = format.index('%')+1
-            format_char = format[directive_index]
-            processed_format = "%s%s%s" % (processed_format,
-                                           format[:directive_index-1],
-                                           self[format_char])
-            format = format[directive_index+1:]
+        def repl(m):
+            format_char = m[1]
             match format_char:
                 case 'Y' | 'y' | 'G':
+                    nonlocal year_in_format
                     year_in_format = True
                 case 'd':
+                    nonlocal day_of_month_in_format
                     day_of_month_in_format = True
+            return self[format_char]
+        format = re_sub(r'%(O?.)', repl, format)
         if day_of_month_in_format and not year_in_format:
             import warnings
             warnings.warn("""\
@@ -275,7 +376,7 @@ def pattern(self, format):
 See https://github.com/python/cpython/issues/70647.""",
                           DeprecationWarning,
                           skip_file_prefixes=(os.path.dirname(__file__),))
-        return "%s%s" % (processed_format, format)
+        return format
 
     def compile(self, format):
         """Return a compiled re object for the format string."""
diff --git a/Lib/argparse.py b/Lib/argparse.py
index 55bf8cdd875a8d..90623a19948575 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -261,13 +261,12 @@ def add_argument(self, action):
 
             # find all invocations
             get_invocation = self._format_action_invocation
-            invocations = [get_invocation(action)]
+            invocation_lengths = [len(get_invocation(action)) + self._current_indent]
             for subaction in self._iter_indented_subactions(action):
-                invocations.append(get_invocation(subaction))
+                invocation_lengths.append(len(get_invocation(subaction)) + self._current_indent)
 
             # update the maximum item length
-            invocation_length = max(map(len, invocations))
-            action_length = invocation_length + self._current_indent
+            action_length = max(invocation_lengths)
             self._action_max_length = max(self._action_max_length,
                                           action_length)
 
@@ -447,15 +446,24 @@ def _get_actions_usage_parts(self, actions, groups):
             parts.append(part)
 
         # group mutually exclusive actions
+        inserted_separators_indices = set()
         for start, end in sorted(inserts, reverse=True):
             group = inserts[start, end]
             group_parts = [item for item in parts[start:end] if item is not None]
+            group_size = len(group_parts)
             if group.required:
-                open, close = "()" if len(group_parts) > 1 else ("", "")
+                open, close = "()" if group_size > 1 else ("", "")
             else:
                 open, close = "[]"
-            parts[start] = open + " | ".join(group_parts) + close
-            for i in range(start + 1, end):
+            group_parts[0] = open + group_parts[0]
+            group_parts[-1] = group_parts[-1] + close
+            for i, part in enumerate(group_parts[:-1], start=start):
+                # insert a separator if not already done in a nested group
+                if i not in inserted_separators_indices:
+                    parts[i] = part + ' |'
+                    inserted_separators_indices.add(i)
+            parts[start + group_size - 1] = group_parts[-1]
+            for i in range(start + group_size, end):
                 parts[i] = None
 
         # return the usage parts
@@ -519,8 +527,7 @@ def _format_action(self, action):
     def _format_action_invocation(self, action):
         if not action.option_strings:
             default = self._get_default_metavar_for_positional(action)
-            metavar, = self._metavar_formatter(action, default)(1)
-            return metavar
+            return ' '.join(self._metavar_formatter(action, default)(1))
 
         else:
 
@@ -540,8 +547,7 @@ def _metavar_formatter(self, action, default_metavar):
         if action.metavar is not None:
             result = action.metavar
         elif action.choices is not None:
-            choice_strs = [str(choice) for choice in action.choices]
-            result = '{%s}' % ','.join(choice_strs)
+            result = '{%s}' % ','.join(map(str, action.choices))
         else:
             result = default_metavar
 
@@ -589,8 +595,7 @@ def _expand_help(self, action):
             if hasattr(params[name], '__name__'):
                 params[name] = params[name].__name__
         if params.get('choices') is not None:
-            choices_str = ', '.join([str(c) for c in params['choices']])
-            params['choices'] = choices_str
+            params['choices'] = ', '.join(map(str, params['choices']))
         return self._get_help_string(action) % params
 
     def _iter_indented_subactions(self, action):
@@ -695,11 +700,19 @@ def _get_action_name(argument):
     elif argument.option_strings:
         return '/'.join(argument.option_strings)
     elif argument.metavar not in (None, SUPPRESS):
-        return argument.metavar
+        metavar = argument.metavar
+        if not isinstance(metavar, tuple):
+            return metavar
+        if argument.nargs == ZERO_OR_MORE and len(metavar) == 2:
+            return '%s[, %s]' % metavar
+        elif argument.nargs == ONE_OR_MORE:
+            return '%s[, %s]' % metavar
+        else:
+            return ', '.join(metavar)
     elif argument.dest not in (None, SUPPRESS):
         return argument.dest
     elif argument.choices:
-        return '{' + ','.join(argument.choices) + '}'
+        return '{%s}' % ','.join(map(str, argument.choices))
     else:
         return None
 
@@ -1244,7 +1257,8 @@ def __call__(self, parser, namespace, values, option_string=None):
             setattr(namespace, key, value)
 
         if arg_strings:
-            vars(namespace).setdefault(_UNRECOGNIZED_ARGS_ATTR, [])
+            if not hasattr(namespace, _UNRECOGNIZED_ARGS_ATTR):
+                setattr(namespace, _UNRECOGNIZED_ARGS_ATTR, [])
             getattr(namespace, _UNRECOGNIZED_ARGS_ATTR).extend(arg_strings)
 
 class _ExtendAction(_AppendAction):
@@ -1533,7 +1547,11 @@ def _add_container_actions(self, container):
         # NOTE: if add_mutually_exclusive_group ever gains title= and
         # description= then this code will need to be expanded as above
         for group in container._mutually_exclusive_groups:
-            mutex_group = self.add_mutually_exclusive_group(
+            if group._container is container:
+                cont = self
+            else:
+                cont = title_group_map[group._container.title]
+            mutex_group = cont.add_mutually_exclusive_group(
                 required=group.required)
 
             # map the actions to their new mutex group
@@ -1552,9 +1570,8 @@ def _get_positional_kwargs(self, dest, **kwargs):
 
         # mark positional arguments as required if at least one is
         # always required
-        if kwargs.get('nargs') not in [OPTIONAL, ZERO_OR_MORE]:
-            kwargs['required'] = True
-        if kwargs.get('nargs') == ZERO_OR_MORE and 'default' not in kwargs:
+        nargs = kwargs.get('nargs')
+        if nargs not in [OPTIONAL, ZERO_OR_MORE, REMAINDER, SUPPRESS, 0]:
             kwargs['required'] = True
 
         # return the keyword arguments with no option strings
@@ -1819,14 +1836,14 @@ def _get_kwargs(self):
     # ==================================
     def add_subparsers(self, **kwargs):
         if self._subparsers is not None:
-            self.error(_('cannot have multiple subparser arguments'))
+            raise ArgumentError(None, _('cannot have multiple subparser arguments'))
 
         # add the parser class to the arguments if it's not present
         kwargs.setdefault('parser_class', type(self))
 
         if 'title' in kwargs or 'description' in kwargs:
-            title = _(kwargs.pop('title', 'subcommands'))
-            description = _(kwargs.pop('description', None))
+            title = kwargs.pop('title', _('subcommands'))
+            description = kwargs.pop('description', None)
             self._subparsers = self.add_argument_group(title, description)
         else:
             self._subparsers = self._positionals
@@ -1871,11 +1888,17 @@ def _get_positional_actions(self):
     def parse_args(self, args=None, namespace=None):
         args, argv = self.parse_known_args(args, namespace)
         if argv:
-            msg = _('unrecognized arguments: %s')
-            self.error(msg % ' '.join(argv))
+            msg = _('unrecognized arguments: %s') % ' '.join(argv)
+            if self.exit_on_error:
+                self.error(msg)
+            else:
+                raise ArgumentError(None, msg)
         return args
 
     def parse_known_args(self, args=None, namespace=None):
+        return self._parse_known_args2(args, namespace, intermixed=False)
+
+    def _parse_known_args2(self, args, namespace, intermixed):
         if args is None:
             # args default to the system args
             args = _sys.argv[1:]
@@ -1902,18 +1925,18 @@ def parse_known_args(self, args=None, namespace=None):
         # parse the arguments and exit if there are any errors
         if self.exit_on_error:
             try:
-                namespace, args = self._parse_known_args(args, namespace)
+                namespace, args = self._parse_known_args(args, namespace, intermixed)
             except ArgumentError as err:
                 self.error(str(err))
         else:
-            namespace, args = self._parse_known_args(args, namespace)
+            namespace, args = self._parse_known_args(args, namespace, intermixed)
 
         if hasattr(namespace, _UNRECOGNIZED_ARGS_ATTR):
             args.extend(getattr(namespace, _UNRECOGNIZED_ARGS_ATTR))
             delattr(namespace, _UNRECOGNIZED_ARGS_ATTR)
         return namespace, args
 
-    def _parse_known_args(self, arg_strings, namespace):
+    def _parse_known_args(self, arg_strings, namespace, intermixed):
         # replace arg strings that are file references
         if self.fromfile_prefix_chars is not None:
             arg_strings = self._read_args_from_files(arg_strings)
@@ -1945,11 +1968,11 @@ def _parse_known_args(self, arg_strings, namespace):
             # otherwise, add the arg to the arg strings
             # and note the index if it was an option
             else:
-                option_tuple = self._parse_optional(arg_string)
-                if option_tuple is None:
+                option_tuples = self._parse_optional(arg_string)
+                if option_tuples is None:
                     pattern = 'A'
                 else:
-                    option_string_indices[i] = option_tuple
+                    option_string_indices[i] = option_tuples
                     pattern = 'O'
                 arg_string_pattern_parts.append(pattern)
 
@@ -1966,9 +1989,8 @@ def take_action(action, argument_strings, option_string=None):
             argument_values = self._get_values(action, argument_strings)
 
             # error if this argument is not allowed with other previously
-            # seen arguments, assuming that actions that use the default
-            # value don't really count as "present"
-            if argument_values is not action.default:
+            # seen arguments
+            if action.option_strings or argument_strings:
                 seen_non_default_actions.add(action)
                 for conflict_action in action_conflicts.get(action, []):
                     if conflict_action in seen_non_default_actions:
@@ -1985,8 +2007,16 @@ def take_action(action, argument_strings, option_string=None):
         def consume_optional(start_index):
 
             # get the optional identified at this index
-            option_tuple = option_string_indices[start_index]
-            action, option_string, sep, explicit_arg = option_tuple
+            option_tuples = option_string_indices[start_index]
+            # if multiple actions match, the option string was ambiguous
+            if len(option_tuples) > 1:
+                options = ', '.join([option_string
+                    for action, option_string, sep, explicit_arg in option_tuples])
+                args = {'option': arg_strings[start_index], 'matches': options}
+                msg = _('ambiguous option: %(option)s could match %(matches)s')
+                raise ArgumentError(None, msg % args)
+
+            action, option_string, sep, explicit_arg = option_tuples[0]
 
             # identify additional optionals in the same arg string
             # (e.g. -xyz is the same as -x -y -z if no args are required)
@@ -1997,6 +2027,7 @@ def consume_optional(start_index):
                 # if we found no optional action, skip it
                 if action is None:
                     extras.append(arg_strings[start_index])
+                    extras_pattern.append('O')
                     return start_index + 1
 
                 # if there is an explicit argument, try to match the
@@ -2032,6 +2063,7 @@ def consume_optional(start_index):
                                 sep = ''
                         else:
                             extras.append(char + explicit_arg)
+                            extras_pattern.append('O')
                             stop = start_index + 1
                             break
                     # if the action expect exactly one argument, we've
@@ -2086,6 +2118,15 @@ def consume_positionals(start_index):
             # and add the Positional and its args to the list
             for action, arg_count in zip(positionals, arg_counts):
                 args = arg_strings[start_index: start_index + arg_count]
+                # Strip out the first '--' if it is not in REMAINDER arg.
+                if action.nargs == PARSER:
+                    if arg_strings_pattern[start_index] == '-':
+                        assert args[0] == '--'
+                        args.remove('--')
+                elif action.nargs != REMAINDER:
+                    if (arg_strings_pattern.find('-', start_index,
+                                                 start_index + arg_count) >= 0):
+                        args.remove('--')
                 start_index += arg_count
                 if args and action.deprecated and action.dest not in warned:
                     self._warning(_("argument '%(argument_name)s' is deprecated") %
@@ -2101,6 +2142,7 @@ def consume_positionals(start_index):
         # consume Positionals and Optionals alternately, until we have
         # passed the last option string
         extras = []
+        extras_pattern = []
         start_index = 0
         if option_string_indices:
             max_option_string_index = max(option_string_indices)
@@ -2114,7 +2156,7 @@ def consume_positionals(start_index):
                 if next_option_string_index in option_string_indices:
                     break
                 next_option_string_index += 1
-            if start_index != next_option_string_index:
+            if not intermixed and start_index != next_option_string_index:
                 positionals_end_index = consume_positionals(start_index)
 
                 # only try to parse the next optional if we didn't consume
@@ -2130,16 +2172,35 @@ def consume_positionals(start_index):
             if start_index not in option_string_indices:
                 strings = arg_strings[start_index:next_option_string_index]
                 extras.extend(strings)
+                extras_pattern.extend(arg_strings_pattern[start_index:next_option_string_index])
                 start_index = next_option_string_index
 
             # consume the next optional and any arguments for it
             start_index = consume_optional(start_index)
 
-        # consume any positionals following the last Optional
-        stop_index = consume_positionals(start_index)
+        if not intermixed:
+            # consume any positionals following the last Optional
+            stop_index = consume_positionals(start_index)
 
-        # if we didn't consume all the argument strings, there were extras
-        extras.extend(arg_strings[stop_index:])
+            # if we didn't consume all the argument strings, there were extras
+            extras.extend(arg_strings[stop_index:])
+        else:
+            extras.extend(arg_strings[start_index:])
+            extras_pattern.extend(arg_strings_pattern[start_index:])
+            extras_pattern = ''.join(extras_pattern)
+            assert len(extras_pattern) == len(extras)
+            # consume all positionals
+            arg_strings = [s for s, c in zip(extras, extras_pattern) if c != 'O']
+            arg_strings_pattern = extras_pattern.replace('O', '')
+            stop_index = consume_positionals(0)
+            # leave unknown optionals and non-consumed positionals in extras
+            for i, c in enumerate(extras_pattern):
+                if not stop_index:
+                    break
+                if c != 'O':
+                    stop_index -= 1
+                    extras[i] = None
+            extras = [s for s in extras if s is not None]
 
         # make sure all required actions were present and also convert
         # action defaults which were not given as arguments
@@ -2161,7 +2222,7 @@ def consume_positionals(start_index):
                                 self._get_value(action, action.default))
 
         if required_actions:
-            self.error(_('the following arguments are required: %s') %
+            raise ArgumentError(None, _('the following arguments are required: %s') %
                        ', '.join(required_actions))
 
         # make sure all required groups had one option present
@@ -2177,7 +2238,7 @@ def consume_positionals(start_index):
                              for action in group._group_actions
                              if action.help is not SUPPRESS]
                     msg = _('one of the arguments %s is required')
-                    self.error(msg % ' '.join(names))
+                    raise ArgumentError(None, msg % ' '.join(names))
 
         # return the updated namespace and the extra arguments
         return namespace, extras
@@ -2204,7 +2265,7 @@ def _read_args_from_files(self, arg_strings):
                         arg_strings = self._read_args_from_files(arg_strings)
                         new_arg_strings.extend(arg_strings)
                 except OSError as err:
-                    self.error(str(err))
+                    raise ArgumentError(None, str(err))
 
         # return the modified argument list
         return new_arg_strings
@@ -2237,18 +2298,19 @@ def _match_argument(self, action, arg_strings_pattern):
     def _match_arguments_partial(self, actions, arg_strings_pattern):
         # progressively shorten the actions list by slicing off the
         # final actions until we find a match
-        result = []
         for i in range(len(actions), 0, -1):
             actions_slice = actions[:i]
             pattern = ''.join([self._get_nargs_pattern(action)
                                for action in actions_slice])
             match = _re.match(pattern, arg_strings_pattern)
             if match is not None:
-                result.extend([len(string) for string in match.groups()])
-                break
-
-        # return the list of arg string counts
-        return result
+                result = [len(string) for string in match.groups()]
+                if (match.end() < len(arg_strings_pattern)
+                    and arg_strings_pattern[match.end()] == 'O'):
+                    while result and not result[-1]:
+                        del result[-1]
+                return result
+        return []
 
     def _parse_optional(self, arg_string):
         # if it's an empty string, it was meant to be a positional
@@ -2262,7 +2324,7 @@ def _parse_optional(self, arg_string):
         # if the option string is present in the parser, return the action
         if arg_string in self._option_string_actions:
             action = self._option_string_actions[arg_string]
-            return action, arg_string, None, None
+            return [(action, arg_string, None, None)]
 
         # if it's just a single character, it was meant to be positional
         if len(arg_string) == 1:
@@ -2272,25 +2334,14 @@ def _parse_optional(self, arg_string):
         option_string, sep, explicit_arg = arg_string.partition('=')
         if sep and option_string in self._option_string_actions:
             action = self._option_string_actions[option_string]
-            return action, option_string, sep, explicit_arg
+            return [(action, option_string, sep, explicit_arg)]
 
         # search through all possible prefixes of the option string
         # and all actions in the parser for possible interpretations
         option_tuples = self._get_option_tuples(arg_string)
 
-        # if multiple actions match, the option string was ambiguous
-        if len(option_tuples) > 1:
-            options = ', '.join([option_string
-                for action, option_string, sep, explicit_arg in option_tuples])
-            args = {'option': arg_string, 'matches': options}
-            msg = _('ambiguous option: %(option)s could match %(matches)s')
-            self.error(msg % args)
-
-        # if exactly one action matched, this segmentation is good,
-        # so return the parsed action
-        elif len(option_tuples) == 1:
-            option_tuple, = option_tuples
-            return option_tuple
+        if option_tuples:
+            return option_tuples
 
         # if it was not found as an option, but it looks like a negative
         # number, it was meant to be positional
@@ -2305,7 +2356,7 @@ def _parse_optional(self, arg_string):
 
         # it was meant to be an optional but there is no such option
         # in this parser (though it might be a valid option in a subparser)
-        return None, arg_string, None, None
+        return [(None, arg_string, None, None)]
 
     def _get_option_tuples(self, option_string):
         result = []
@@ -2328,7 +2379,9 @@ def _get_option_tuples(self, option_string):
         # but multiple character options always have to have their argument
         # separate
         elif option_string[0] in chars and option_string[1] not in chars:
-            option_prefix = option_string
+            option_prefix, sep, explicit_arg = option_string.partition('=')
+            if not sep:
+                sep = explicit_arg = None
             short_option_prefix = option_string[:2]
             short_explicit_arg = option_string[2:]
 
@@ -2337,14 +2390,14 @@ def _get_option_tuples(self, option_string):
                     action = self._option_string_actions[option_string]
                     tup = action, option_string, '', short_explicit_arg
                     result.append(tup)
-                elif option_string.startswith(option_prefix):
+                elif self.allow_abbrev and option_string.startswith(option_prefix):
                     action = self._option_string_actions[option_string]
-                    tup = action, option_string, None, None
+                    tup = action, option_string, sep, explicit_arg
                     result.append(tup)
 
         # shouldn't ever get here
         else:
-            self.error(_('unexpected option string: %s') % option_string)
+            raise ArgumentError(None, _('unexpected option string: %s') % option_string)
 
         # return the collected option tuples
         return result
@@ -2353,43 +2406,40 @@ def _get_nargs_pattern(self, action):
         # in all examples below, we have to allow for '--' args
         # which are represented as '-' in the pattern
         nargs = action.nargs
+        # if this is an optional action, -- is not allowed
+        option = action.option_strings
 
         # the default (None) is assumed to be a single argument
         if nargs is None:
-            nargs_pattern = '(-*A-*)'
+            nargs_pattern = '([A])' if option else '(-*A-*)'
 
         # allow zero or one arguments
         elif nargs == OPTIONAL:
-            nargs_pattern = '(-*A?-*)'
+            nargs_pattern = '(A?)' if option else '(-*A?-*)'
 
         # allow zero or more arguments
         elif nargs == ZERO_OR_MORE:
-            nargs_pattern = '(-*[A-]*)'
+            nargs_pattern = '(A*)' if option else '(-*[A-]*)'
 
         # allow one or more arguments
         elif nargs == ONE_OR_MORE:
-            nargs_pattern = '(-*A[A-]*)'
+            nargs_pattern = '(A+)' if option else '(-*A[A-]*)'
 
         # allow any number of options or arguments
         elif nargs == REMAINDER:
-            nargs_pattern = '([-AO]*)'
+            nargs_pattern = '([AO]*)' if option else '(.*)'
 
         # allow one argument followed by any number of options or arguments
         elif nargs == PARSER:
-            nargs_pattern = '(-*A[-AO]*)'
+            nargs_pattern = '(A[AO]*)' if option else '(-*A[-AO]*)'
 
         # suppress action, like nargs=0
         elif nargs == SUPPRESS:
-            nargs_pattern = '(-*-*)'
+            nargs_pattern = '()' if option else '(-*)'
 
         # all others should be integers
         else:
-            nargs_pattern = '(-*%s-*)' % '-*'.join('A' * nargs)
-
-        # if this is an optional action, -- is not allowed
-        if action.option_strings:
-            nargs_pattern = nargs_pattern.replace('-*', '')
-            nargs_pattern = nargs_pattern.replace('-', '')
+            nargs_pattern = '([AO]{%d})' % nargs if option else '((?:-*A){%d}-*)' % nargs
 
         # return the pattern
         return nargs_pattern
@@ -2401,8 +2451,11 @@ def _get_nargs_pattern(self, action):
     def parse_intermixed_args(self, args=None, namespace=None):
         args, argv = self.parse_known_intermixed_args(args, namespace)
         if argv:
-            msg = _('unrecognized arguments: %s')
-            self.error(msg % ' '.join(argv))
+            msg = _('unrecognized arguments: %s') % ' '.join(argv)
+            if self.exit_on_error:
+                self.error(msg)
+            else:
+                raise ArgumentError(None, msg)
         return args
 
     def parse_known_intermixed_args(self, args=None, namespace=None):
@@ -2413,10 +2466,6 @@ def parse_known_intermixed_args(self, args=None, namespace=None):
         # are then parsed.  If the parser definition is incompatible with the
         # intermixed assumptions (e.g. use of REMAINDER, subparsers) a
         # TypeError is raised.
-        #
-        # positionals are 'deactivated' by setting nargs and default to
-        # SUPPRESS.  This blocks the addition of that positional to the
-        # namespace
 
         positionals = self._get_positional_actions()
         a = [action for action in positionals
@@ -2425,78 +2474,19 @@ def parse_known_intermixed_args(self, args=None, namespace=None):
             raise TypeError('parse_intermixed_args: positional arg'
                             ' with nargs=%s'%a[0].nargs)
 
-        if [action.dest for group in self._mutually_exclusive_groups
-            for action in group._group_actions if action in positionals]:
-            raise TypeError('parse_intermixed_args: positional in'
-                            ' mutuallyExclusiveGroup')
-
-        try:
-            save_usage = self.usage
-            try:
-                if self.usage is None:
-                    # capture the full usage for use in error messages
-                    self.usage = self.format_usage()[7:]
-                for action in positionals:
-                    # deactivate positionals
-                    action.save_nargs = action.nargs
-                    # action.nargs = 0
-                    action.nargs = SUPPRESS
-                    action.save_default = action.default
-                    action.default = SUPPRESS
-                namespace, remaining_args = self.parse_known_args(args,
-                                                                  namespace)
-                for action in positionals:
-                    # remove the empty positional values from namespace
-                    if (hasattr(namespace, action.dest)
-                            and getattr(namespace, action.dest)==[]):
-                        from warnings import warn
-                        warn('Do not expect %s in %s' % (action.dest, namespace))
-                        delattr(namespace, action.dest)
-            finally:
-                # restore nargs and usage before exiting
-                for action in positionals:
-                    action.nargs = action.save_nargs
-                    action.default = action.save_default
-            optionals = self._get_optional_actions()
-            try:
-                # parse positionals.  optionals aren't normally required, but
-                # they could be, so make sure they aren't.
-                for action in optionals:
-                    action.save_required = action.required
-                    action.required = False
-                for group in self._mutually_exclusive_groups:
-                    group.save_required = group.required
-                    group.required = False
-                namespace, extras = self.parse_known_args(remaining_args,
-                                                          namespace)
-            finally:
-                # restore parser values before exiting
-                for action in optionals:
-                    action.required = action.save_required
-                for group in self._mutually_exclusive_groups:
-                    group.required = group.save_required
-        finally:
-            self.usage = save_usage
-        return namespace, extras
+        return self._parse_known_args2(args, namespace, intermixed=True)
 
     # ========================
     # Value conversion methods
     # ========================
     def _get_values(self, action, arg_strings):
-        # for everything but PARSER, REMAINDER args, strip out first '--'
-        if not action.option_strings and action.nargs not in [PARSER, REMAINDER]:
-            try:
-                arg_strings.remove('--')
-            except ValueError:
-                pass
-
         # optional argument produces a default when not present
         if not arg_strings and action.nargs == OPTIONAL:
             if action.option_strings:
                 value = action.const
             else:
                 value = action.default
-            if isinstance(value, str):
+            if isinstance(value, str) and value is not SUPPRESS:
                 value = self._get_value(action, value)
                 self._check_value(action, value)
 
@@ -2567,11 +2557,15 @@ def _get_value(self, action, arg_string):
 
     def _check_value(self, action, value):
         # converted value must be one of the choices (if specified)
-        if action.choices is not None and value not in action.choices:
-            args = {'value': value,
-                    'choices': ', '.join(map(repr, action.choices))}
-            msg = _('invalid choice: %(value)r (choose from %(choices)s)')
-            raise ArgumentError(action, msg % args)
+        choices = action.choices
+        if choices is not None:
+            if isinstance(choices, str):
+                choices = iter(choices)
+            if value not in choices:
+                args = {'value': str(value),
+                        'choices': ', '.join(map(str, action.choices))}
+                msg = _('invalid choice: %(value)r (choose from %(choices)s)')
+                raise ArgumentError(action, msg % args)
 
     # =======================
     # Help-formatting methods
diff --git a/Lib/asyncio/__main__.py b/Lib/asyncio/__main__.py
index cbc1d7c93ef76f..95c636f9e02866 100644
--- a/Lib/asyncio/__main__.py
+++ b/Lib/asyncio/__main__.py
@@ -1,42 +1,51 @@
 import ast
 import asyncio
-import code
 import concurrent.futures
+import contextvars
 import inspect
+import os
 import site
 import sys
 import threading
 import types
 import warnings
 
+from _colorize import can_colorize, ANSIColors  # type: ignore[import-not-found]
+from _pyrepl.console import InteractiveColoredConsole
+
 from . import futures
 
 
-class AsyncIOInteractiveConsole(code.InteractiveConsole):
+class AsyncIOInteractiveConsole(InteractiveColoredConsole):
 
     def __init__(self, locals, loop):
-        super().__init__(locals)
+        super().__init__(locals, filename="<stdin>")
         self.compile.compiler.flags |= ast.PyCF_ALLOW_TOP_LEVEL_AWAIT
 
         self.loop = loop
+        self.context = contextvars.copy_context()
 
     def runcode(self, code):
+        global return_code
         future = concurrent.futures.Future()
 
         def callback():
+            global return_code
             global repl_future
-            global repl_future_interrupted
+            global keyboard_interrupted
 
             repl_future = None
-            repl_future_interrupted = False
+            keyboard_interrupted = False
 
             func = types.FunctionType(code, self.locals)
             try:
                 coro = func()
-            except SystemExit:
-                raise
+            except SystemExit as se:
+                return_code = se.code
+                self.loop.stop()
+                return
             except KeyboardInterrupt as ex:
-                repl_future_interrupted = True
+                keyboard_interrupted = True
                 future.set_exception(ex)
                 return
             except BaseException as ex:
@@ -48,19 +57,21 @@ def callback():
                 return
 
             try:
-                repl_future = self.loop.create_task(coro)
+                repl_future = self.loop.create_task(coro, context=self.context)
                 futures._chain_future(repl_future, future)
             except BaseException as exc:
                 future.set_exception(exc)
 
-        loop.call_soon_threadsafe(callback)
+        loop.call_soon_threadsafe(callback, context=self.context)
 
         try:
             return future.result()
-        except SystemExit:
-            raise
+        except SystemExit as se:
+            return_code = se.code
+            self.loop.stop()
+            return
         except BaseException:
-            if repl_future_interrupted:
+            if keyboard_interrupted:
                 self.write("\nKeyboardInterrupt\n")
             else:
                 self.showtraceback()
@@ -69,18 +80,47 @@ def callback():
 class REPLThread(threading.Thread):
 
     def run(self):
+        global return_code
+
         try:
             banner = (
                 f'asyncio REPL {sys.version} on {sys.platform}\n'
                 f'Use "await" directly instead of "asyncio.run()".\n'
                 f'Type "help", "copyright", "credits" or "license" '
                 f'for more information.\n'
-                f'{getattr(sys, "ps1", ">>> ")}import asyncio'
             )
 
-            console.interact(
-                banner=banner,
-                exitmsg='exiting asyncio REPL...')
+            console.write(banner)
+
+            if startup_path := os.getenv("PYTHONSTARTUP"):
+                sys.audit("cpython.run_startup", startup_path)
+
+                import tokenize
+                with tokenize.open(startup_path) as f:
+                    startup_code = compile(f.read(), startup_path, "exec")
+                    exec(startup_code, console.locals)
+
+            ps1 = getattr(sys, "ps1", ">>> ")
+            if can_colorize() and CAN_USE_PYREPL:
+                ps1 = f"{ANSIColors.BOLD_MAGENTA}{ps1}{ANSIColors.RESET}"
+            console.write(f"{ps1}import asyncio\n")
+
+            if CAN_USE_PYREPL:
+                from _pyrepl.simple_interact import (
+                    run_multiline_interactive_console,
+                )
+                try:
+                    run_multiline_interactive_console(console)
+                except SystemExit:
+                    # expected via the `exit` and `quit` commands
+                    pass
+                except BaseException:
+                    # unexpected issue
+                    console.showtraceback()
+                    console.write("Internal error, ")
+                    return_code = 1
+            else:
+                console.interact(banner="", exitmsg="")
         finally:
             warnings.filterwarnings(
                 'ignore',
@@ -89,8 +129,25 @@ def run(self):
 
             loop.call_soon_threadsafe(loop.stop)
 
+    def interrupt(self) -> None:
+        if not CAN_USE_PYREPL:
+            return
+
+        from _pyrepl.simple_interact import _get_reader
+        r = _get_reader()
+        if r.threading_hook is not None:
+            r.threading_hook.add("")  # type: ignore
+
 
 if __name__ == '__main__':
+    sys.audit("cpython.run_stdin")
+
+    if os.getenv('PYTHON_BASIC_REPL'):
+        CAN_USE_PYREPL = False
+    else:
+        from _pyrepl.main import CAN_USE_PYREPL
+
+    return_code = 0
     loop = asyncio.new_event_loop()
     asyncio.set_event_loop(loop)
 
@@ -103,16 +160,17 @@ def run(self):
     console = AsyncIOInteractiveConsole(repl_locals, loop)
 
     repl_future = None
-    repl_future_interrupted = False
+    keyboard_interrupted = False
 
     try:
         import readline  # NoQA
     except ImportError:
-        pass
+        readline = None
 
     interactive_hook = getattr(sys, "__interactivehook__", None)
 
     if interactive_hook is not None:
+        sys.audit("cpython.run_interactivehook", interactive_hook)
         interactive_hook()
 
     if interactive_hook is site.register_readline:
@@ -122,10 +180,11 @@ def run(self):
         except:
             pass
         else:
-            completer = rlcompleter.Completer(console.locals)
-            readline.set_completer(completer.complete)
+            if readline is not None:
+                completer = rlcompleter.Completer(console.locals)
+                readline.set_completer(completer.complete)
 
-    repl_thread = REPLThread()
+    repl_thread = REPLThread(name="Interactive thread")
     repl_thread.daemon = True
     repl_thread.start()
 
@@ -133,9 +192,13 @@ def run(self):
         try:
             loop.run_forever()
         except KeyboardInterrupt:
+            keyboard_interrupted = True
             if repl_future and not repl_future.done():
                 repl_future.cancel()
-                repl_future_interrupted = True
+            repl_thread.interrupt()
             continue
         else:
             break
+
+    console.write('exiting asyncio REPL...\n')
+    sys.exit(return_code)
diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index f0e690b61a73dd..910fc76e884d2c 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -17,7 +17,6 @@
 import collections.abc
 import concurrent.futures
 import errno
-import functools
 import heapq
 import itertools
 import os
@@ -478,7 +477,12 @@ def create_task(self, coro, *, name=None, context=None):
 
             task.set_name(name)
 
-        return task
+        try:
+            return task
+        finally:
+            # gh-128552: prevent a refcycle of
+            # task.exception().__traceback__->BaseEventLoop.create_task->task
+            del task
 
     def set_task_factory(self, factory):
         """Set a task factory that will be used by loop.create_task().
@@ -1028,8 +1032,7 @@ async def _connect_sock(self, exceptions, addr_info, local_addr_infos=None):
                     except OSError as exc:
                         msg = (
                             f'error while attempting to bind on '
-                            f'address {laddr!r}: '
-                            f'{exc.strerror.lower()}'
+                            f'address {laddr!r}: {str(exc).lower()}'
                         )
                         exc = OSError(exc.errno, msg)
                         my_exceptions.append(exc)
@@ -1141,11 +1144,18 @@ async def create_connection(
                     except OSError:
                         continue
             else:  # using happy eyeballs
-                sock, _, _ = await staggered.staggered_race(
-                    (functools.partial(self._connect_sock,
-                                       exceptions, addrinfo, laddr_infos)
-                     for addrinfo in infos),
-                    happy_eyeballs_delay, loop=self)
+                sock = (await staggered.staggered_race(
+                    (
+                        # can't use functools.partial as it keeps a reference
+                        # to exceptions
+                        lambda addrinfo=addrinfo: self._connect_sock(
+                            exceptions, addrinfo, laddr_infos
+                        )
+                        for addrinfo in infos
+                    ),
+                    happy_eyeballs_delay,
+                    loop=self,
+                ))[0]  # can't use sock, _, _ as it keeks a reference to exceptions
 
             if sock is None:
                 exceptions = [exc for sub in exceptions for exc in sub]
@@ -1580,7 +1590,9 @@ async def create_server(
                     if reuse_address:
                         sock.setsockopt(
                             socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
-                    if reuse_port:
+                    # Since Linux 6.12.9, SO_REUSEPORT is not allowed
+                    # on other address families than AF_INET/AF_INET6.
+                    if reuse_port and af in (socket.AF_INET, socket.AF_INET6):
                         _set_reuseport(sock)
                     if keep_alive:
                         sock.setsockopt(
@@ -1599,7 +1611,7 @@ async def create_server(
                     except OSError as err:
                         msg = ('error while attempting '
                                'to bind on address %r: %s'
-                               % (sa, err.strerror.lower()))
+                               % (sa, str(err).lower()))
                         if err.errno == errno.EADDRNOTAVAIL:
                             # Assume the family is not enabled (bpo-30945)
                             sockets.pop()
diff --git a/Lib/asyncio/base_subprocess.py b/Lib/asyncio/base_subprocess.py
index 6dbde2b696ad1f..9c2ba679ce2bf1 100644
--- a/Lib/asyncio/base_subprocess.py
+++ b/Lib/asyncio/base_subprocess.py
@@ -1,6 +1,9 @@
 import collections
 import subprocess
 import warnings
+import os
+import signal
+import sys
 
 from . import protocols
 from . import transports
@@ -142,17 +145,31 @@ def _check_proc(self):
         if self._proc is None:
             raise ProcessLookupError()
 
-    def send_signal(self, signal):
-        self._check_proc()
-        self._proc.send_signal(signal)
+    if sys.platform == 'win32':
+        def send_signal(self, signal):
+            self._check_proc()
+            self._proc.send_signal(signal)
+
+        def terminate(self):
+            self._check_proc()
+            self._proc.terminate()
+
+        def kill(self):
+            self._check_proc()
+            self._proc.kill()
+    else:
+        def send_signal(self, signal):
+            self._check_proc()
+            try:
+                os.kill(self._proc.pid, signal)
+            except ProcessLookupError:
+                pass
 
-    def terminate(self):
-        self._check_proc()
-        self._proc.terminate()
+        def terminate(self):
+            self.send_signal(signal.SIGTERM)
 
-    def kill(self):
-        self._check_proc()
-        self._proc.kill()
+        def kill(self):
+            self.send_signal(signal.SIGKILL)
 
     async def _connect_pipes(self, waiter):
         try:
diff --git a/Lib/asyncio/futures.py b/Lib/asyncio/futures.py
index 9c1b5e49e1a70b..51932639097bbd 100644
--- a/Lib/asyncio/futures.py
+++ b/Lib/asyncio/futures.py
@@ -191,8 +191,7 @@ def result(self):
         the future is done and has an exception set, this exception is raised.
         """
         if self._state == _CANCELLED:
-            exc = self._make_cancelled_error()
-            raise exc
+            raise self._make_cancelled_error()
         if self._state != _FINISHED:
             raise exceptions.InvalidStateError('Result is not ready.')
         self.__log_traceback = False
@@ -209,8 +208,7 @@ def exception(self):
         InvalidStateError.
         """
         if self._state == _CANCELLED:
-            exc = self._make_cancelled_error()
-            raise exc
+            raise self._make_cancelled_error()
         if self._state != _FINISHED:
             raise exceptions.InvalidStateError('Exception is not set.')
         self.__log_traceback = False
diff --git a/Lib/asyncio/locks.py b/Lib/asyncio/locks.py
index aaee8ff0702923..3df4c693a915d5 100644
--- a/Lib/asyncio/locks.py
+++ b/Lib/asyncio/locks.py
@@ -485,7 +485,7 @@ class Barrier(mixins._LoopBoundMixin):
     def __init__(self, parties):
         """Create a barrier, initialised to 'parties' tasks."""
         if parties < 1:
-            raise ValueError('parties must be > 0')
+            raise ValueError('parties must be >= 1')
 
         self._cond = Condition() # notify all tasks when state changes
 
diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
index 397a8cda757895..7eb55bd63ddb73 100644
--- a/Lib/asyncio/proactor_events.py
+++ b/Lib/asyncio/proactor_events.py
@@ -721,6 +721,8 @@ async def sock_sendto(self, sock, data, address):
         return await self._proactor.sendto(sock, data, 0, address)
 
     async def sock_connect(self, sock, address):
+        if self._debug and sock.gettimeout() != 0:
+            raise ValueError("the socket must be non-blocking")
         return await self._proactor.connect(sock, address)
 
     async def sock_accept(self, sock):
diff --git a/Lib/asyncio/runners.py b/Lib/asyncio/runners.py
index 1b89236599aad7..102ae78021b22f 100644
--- a/Lib/asyncio/runners.py
+++ b/Lib/asyncio/runners.py
@@ -168,6 +168,7 @@ def run(main, *, debug=None, loop_factory=None):
     running in the same thread.
 
     If debug is True, the event loop will be run in debug mode.
+    If loop_factory is passed, it is used for new event loop creation.
 
     This function always creates a new event loop and closes it at the end.
     It should be used as a main entry point for asyncio programs, and should
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index f94bf10b4225e7..f1ab9b12d69a5d 100644
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -1175,6 +1175,7 @@ def writelines(self, list_of_data):
         # If the entire buffer couldn't be written, register a write handler
         if self._buffer:
             self._loop._add_writer(self._sock_fd, self._write_ready)
+            self._maybe_pause_protocol()
 
     def can_write_eof(self):
         return True
diff --git a/Lib/asyncio/sslproto.py b/Lib/asyncio/sslproto.py
index fa99d4533aa0a6..74c5f0d5ca0609 100644
--- a/Lib/asyncio/sslproto.py
+++ b/Lib/asyncio/sslproto.py
@@ -101,7 +101,7 @@ def get_protocol(self):
         return self._ssl_protocol._app_protocol
 
     def is_closing(self):
-        return self._closed
+        return self._closed or self._ssl_protocol._is_transport_closing()
 
     def close(self):
         """Close the transport.
@@ -379,6 +379,9 @@ def _get_app_transport(self):
             self._app_transport_created = True
         return self._app_transport
 
+    def _is_transport_closing(self):
+        return self._transport is not None and self._transport.is_closing()
+
     def connection_made(self, transport):
         """Called when the low-level connection is made.
 
diff --git a/Lib/asyncio/staggered.py b/Lib/asyncio/staggered.py
index e180cde0243b15..0afed64fdf9c0f 100644
--- a/Lib/asyncio/staggered.py
+++ b/Lib/asyncio/staggered.py
@@ -66,11 +66,33 @@ async def staggered_race(coro_fns, delay, *, loop=None):
     enum_coro_fns = enumerate(coro_fns)
     winner_result = None
     winner_index = None
+    unhandled_exceptions = []
     exceptions = []
-    running_tasks = []
+    running_tasks = set()
+    on_completed_fut = None
+
+    def task_done(task):
+        running_tasks.discard(task)
+        if (
+            on_completed_fut is not None
+            and not on_completed_fut.done()
+            and not running_tasks
+        ):
+            on_completed_fut.set_result(None)
+
+        if task.cancelled():
+            return
+
+        exc = task.exception()
+        if exc is None:
+            return
+        unhandled_exceptions.append(exc)
 
-    async def run_one_coro(
-            previous_failed: typing.Optional[locks.Event]) -> None:
+    async def run_one_coro(ok_to_start, previous_failed) -> None:
+        # in eager tasks this waits for the calling task to append this task
+        # to running_tasks, in regular tasks this wait is a no-op that does
+        # not yield a future. See gh-124309.
+        await ok_to_start.wait()
         # Wait for the previous task to finish, or for delay seconds
         if previous_failed is not None:
             with contextlib.suppress(exceptions_mod.TimeoutError):
@@ -86,9 +108,13 @@ async def run_one_coro(
             return
         # Start task that will run the next coroutine
         this_failed = locks.Event()
-        next_task = loop.create_task(run_one_coro(this_failed))
-        running_tasks.append(next_task)
-        assert len(running_tasks) == this_index + 2
+        next_ok_to_start = locks.Event()
+        next_task = loop.create_task(run_one_coro(next_ok_to_start, this_failed))
+        running_tasks.add(next_task)
+        next_task.add_done_callback(task_done)
+        # next_task has been appended to running_tasks so next_task is ok to
+        # start.
+        next_ok_to_start.set()
         # Prepare place to put this coroutine's exceptions if not won
         exceptions.append(None)
         assert len(exceptions) == this_index + 1
@@ -113,27 +139,36 @@ async def run_one_coro(
             # up as done() == True, cancelled() == False, exception() ==
             # asyncio.CancelledError. This behavior is specified in
             # https://bugs.python.org/issue30048
-            for i, t in enumerate(running_tasks):
-                if i != this_index:
+            current_task = tasks.current_task(loop)
+            for t in running_tasks:
+                if t is not current_task:
                     t.cancel()
 
-    first_task = loop.create_task(run_one_coro(None))
-    running_tasks.append(first_task)
+    propagate_cancellation_error = None
     try:
-        # Wait for a growing list of tasks to all finish: poor man's version of
-        # curio's TaskGroup or trio's nursery
-        done_count = 0
-        while done_count != len(running_tasks):
-            done, _ = await tasks.wait(running_tasks)
-            done_count = len(done)
+        ok_to_start = locks.Event()
+        first_task = loop.create_task(run_one_coro(ok_to_start, None))
+        running_tasks.add(first_task)
+        first_task.add_done_callback(task_done)
+        # first_task has been appended to running_tasks so first_task is ok to start.
+        ok_to_start.set()
+        propagate_cancellation_error = None
+        # Make sure no tasks are left running if we leave this function
+        while running_tasks:
+            on_completed_fut = loop.create_future()
+            try:
+                await on_completed_fut
+            except exceptions_mod.CancelledError as ex:
+                propagate_cancellation_error = ex
+                for task in running_tasks:
+                    task.cancel(*ex.args)
+            on_completed_fut = None
+        if __debug__ and unhandled_exceptions:
             # If run_one_coro raises an unhandled exception, it's probably a
             # programming error, and I want to see it.
-            if __debug__:
-                for d in done:
-                    if d.done() and not d.cancelled() and d.exception():
-                        raise d.exception()
+            raise ExceptionGroup("staggered race failed", unhandled_exceptions)
+        if propagate_cancellation_error is not None:
+            raise propagate_cancellation_error
         return winner_result, winner_index, exceptions
     finally:
-        # Make sure no tasks are left running if we leave this function
-        for t in running_tasks:
-            t.cancel()
+        del exceptions, propagate_cancellation_error, unhandled_exceptions
diff --git a/Lib/asyncio/taskgroups.py b/Lib/asyncio/taskgroups.py
index f2ee9648c43876..8fda6c8d55e16c 100644
--- a/Lib/asyncio/taskgroups.py
+++ b/Lib/asyncio/taskgroups.py
@@ -66,6 +66,20 @@ async def __aenter__(self):
         return self
 
     async def __aexit__(self, et, exc, tb):
+        tb = None
+        try:
+            return await self._aexit(et, exc)
+        finally:
+            # Exceptions are heavy objects that can have object
+            # cycles (bad for GC); let's not keep a reference to
+            # a bunch of them. It would be nicer to use a try/finally
+            # in __aexit__ directly but that introduced some diff noise
+            self._parent_task = None
+            self._errors = None
+            self._base_error = None
+            exc = None
+
+    async def _aexit(self, et, exc):
         self._exiting = True
 
         if (exc is not None and
@@ -122,7 +136,10 @@ async def __aexit__(self, et, exc, tb):
         assert not self._tasks
 
         if self._base_error is not None:
-            raise self._base_error
+            try:
+                raise self._base_error
+            finally:
+                exc = None
 
         if self._parent_cancel_requested:
             # If this flag is set we *must* call uncancel().
@@ -133,8 +150,14 @@ async def __aexit__(self, et, exc, tb):
 
         # Propagate CancelledError if there is one, except if there
         # are other errors -- those have priority.
-        if propagate_cancellation_error is not None and not self._errors:
-            raise propagate_cancellation_error
+        try:
+            if propagate_cancellation_error is not None and not self._errors:
+                try:
+                    raise propagate_cancellation_error
+                finally:
+                    exc = None
+        finally:
+            propagate_cancellation_error = None
 
         if et is not None and not issubclass(et, exceptions.CancelledError):
             self._errors.append(exc)
@@ -146,14 +169,14 @@ async def __aexit__(self, et, exc, tb):
             if self._parent_task.cancelling():
                 self._parent_task.uncancel()
                 self._parent_task.cancel()
-            # Exceptions are heavy objects that can have object
-            # cycles (bad for GC); let's not keep a reference to
-            # a bunch of them.
             try:
-                me = BaseExceptionGroup('unhandled errors in a TaskGroup', self._errors)
-                raise me from None
+                raise BaseExceptionGroup(
+                    'unhandled errors in a TaskGroup',
+                    self._errors,
+                ) from None
             finally:
-                self._errors = None
+                exc = None
+
 
     def create_task(self, coro, *, name=None, context=None):
         """Create a new task in this group and return it.
@@ -174,15 +197,18 @@ def create_task(self, coro, *, name=None, context=None):
         else:
             task = self._loop.create_task(coro, name=name, context=context)
 
-        # optimization: Immediately call the done callback if the task is
+        # Always schedule the done callback even if the task is
         # already done (e.g. if the coro was able to complete eagerly),
-        # and skip scheduling a done callback
-        if task.done():
-            self._on_task_done(task)
-        else:
-            self._tasks.add(task)
-            task.add_done_callback(self._on_task_done)
-        return task
+        # otherwise if the task completes with an exception then it will cancel
+        # the current task too early. gh-128550, gh-128588
+        self._tasks.add(task)
+        task.add_done_callback(self._on_task_done)
+        try:
+            return task
+        finally:
+            # gh-128552: prevent a refcycle of
+            # task.exception().__traceback__->TaskGroup.create_task->task
+            del task
 
     # Since Python 3.8 Tasks propagate all exceptions correctly,
     # except for KeyboardInterrupt and SystemExit which are
diff --git a/Lib/base64.py b/Lib/base64.py
index 25164d1a1df4fc..5a7e790a193380 100755
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -332,7 +332,7 @@ def a85encode(b, *, foldspaces=False, wrapcol=0, pad=False, adobe=False):
 
     wrapcol controls whether the output should have newline (b'\\n') characters
     added to it. If this is non-zero, each output line will be at most this
-    many characters long.
+    many characters long, excluding the trailing newline.
 
     pad controls whether the input is padded to a multiple of 4 before
     encoding. Note that the btoa implementation always pads.
diff --git a/Lib/bdb.py b/Lib/bdb.py
index 7d63fce6ca63f1..0a3b6dfbfc6025 100644
--- a/Lib/bdb.py
+++ b/Lib/bdb.py
@@ -3,6 +3,7 @@
 import fnmatch
 import sys
 import os
+from contextlib import contextmanager
 from inspect import CO_GENERATOR, CO_COROUTINE, CO_ASYNC_GENERATOR
 
 __all__ = ["BdbQuit", "Bdb", "Breakpoint"]
@@ -63,6 +64,12 @@ def reset(self):
         self.botframe = None
         self._set_stopinfo(None, None)
 
+    @contextmanager
+    def set_enterframe(self, frame):
+        self.enterframe = frame
+        yield
+        self.enterframe = None
+
     def trace_dispatch(self, frame, event, arg):
         """Dispatch a trace function for debugged frames based on the event.
 
@@ -88,28 +95,27 @@ def trace_dispatch(self, frame, event, arg):
         The arg parameter depends on the previous event.
         """
 
-        self.enterframe = frame
-
-        if self.quitting:
-            return # None
-        if event == 'line':
-            return self.dispatch_line(frame)
-        if event == 'call':
-            return self.dispatch_call(frame, arg)
-        if event == 'return':
-            return self.dispatch_return(frame, arg)
-        if event == 'exception':
-            return self.dispatch_exception(frame, arg)
-        if event == 'c_call':
-            return self.trace_dispatch
-        if event == 'c_exception':
-            return self.trace_dispatch
-        if event == 'c_return':
+        with self.set_enterframe(frame):
+            if self.quitting:
+                return # None
+            if event == 'line':
+                return self.dispatch_line(frame)
+            if event == 'call':
+                return self.dispatch_call(frame, arg)
+            if event == 'return':
+                return self.dispatch_return(frame, arg)
+            if event == 'exception':
+                return self.dispatch_exception(frame, arg)
+            if event == 'c_call':
+                return self.trace_dispatch
+            if event == 'c_exception':
+                return self.trace_dispatch
+            if event == 'c_return':
+                return self.trace_dispatch
+            if event == 'opcode':
+                return self.dispatch_opcode(frame, arg)
+            print('bdb.Bdb.dispatch: unknown debugging event:', repr(event))
             return self.trace_dispatch
-        if event == 'opcode':
-            return self.dispatch_opcode(frame, arg)
-        print('bdb.Bdb.dispatch: unknown debugging event:', repr(event))
-        return self.trace_dispatch
 
     def dispatch_line(self, frame):
         """Invoke user function and return trace function for line event.
@@ -165,6 +171,11 @@ def dispatch_return(self, frame, arg):
             # The user issued a 'next' or 'until' command.
             if self.stopframe is frame and self.stoplineno != -1:
                 self._set_stopinfo(None, None)
+            # The previous frame might not have f_trace set, unless we are
+            # issuing a command that does not expect to stop, we should set
+            # f_trace
+            if self.stoplineno != -1:
+                self._set_caller_tracefunc(frame)
         return self.trace_dispatch
 
     def dispatch_exception(self, frame, arg):
@@ -320,15 +331,15 @@ def _set_stopinfo(self, stopframe, returnframe, stoplineno=0, opcode=False):
         self.stoplineno = stoplineno
         self._set_trace_opcodes(opcode)
 
-    def _set_caller_tracefunc(self):
+    def _set_caller_tracefunc(self, current_frame):
         # Issue #13183: pdb skips frames after hitting a breakpoint and running
         # step commands.
         # Restore the trace function in the caller (that may not have been set
-        # for performance reasons) when returning from the current frame.
-        if self.frame_returning:
-            caller_frame = self.frame_returning.f_back
-            if caller_frame and not caller_frame.f_trace:
-                caller_frame.f_trace = self.trace_dispatch
+        # for performance reasons) when returning from the current frame, unless
+        # the caller is the botframe.
+        caller_frame = current_frame.f_back
+        if caller_frame and not caller_frame.f_trace and caller_frame is not self.botframe:
+            caller_frame.f_trace = self.trace_dispatch
 
     # Derived classes and clients can call the following methods
     # to affect the stepping state.
@@ -343,12 +354,10 @@ def set_until(self, frame, lineno=None):
 
     def set_step(self):
         """Stop after one line of code."""
-        self._set_caller_tracefunc()
         self._set_stopinfo(None, None)
 
     def set_stepinstr(self):
         """Stop before the next instruction."""
-        self._set_caller_tracefunc()
         self._set_stopinfo(None, None, opcode=True)
 
     def set_next(self, frame):
@@ -370,15 +379,15 @@ def set_trace(self, frame=None):
         if frame is None:
             frame = sys._getframe().f_back
         self.reset()
-        self.enterframe = frame
-        while frame:
-            frame.f_trace = self.trace_dispatch
-            self.botframe = frame
-            self.frame_trace_lines_opcodes[frame] = (frame.f_trace_lines, frame.f_trace_opcodes)
-            # We need f_trace_lines == True for the debugger to work
-            frame.f_trace_lines = True
-            frame = frame.f_back
-        self.set_stepinstr()
+        with self.set_enterframe(frame):
+            while frame:
+                frame.f_trace = self.trace_dispatch
+                self.botframe = frame
+                self.frame_trace_lines_opcodes[frame] = (frame.f_trace_lines, frame.f_trace_opcodes)
+                # We need f_trace_lines == True for the debugger to work
+                frame.f_trace_lines = True
+                frame = frame.f_back
+            self.set_stepinstr()
         sys.settrace(self.trace_dispatch)
 
     def set_continue(self):
@@ -436,6 +445,14 @@ def set_break(self, filename, lineno, temporary=False, cond=None,
             return 'Line %s:%d does not exist' % (filename, lineno)
         self._add_to_breaks(filename, lineno)
         bp = Breakpoint(filename, lineno, temporary, cond, funcname)
+        # After we set a new breakpoint, we need to search through all frames
+        # and set f_trace to trace_dispatch if there could be a breakpoint in
+        # that frame.
+        frame = self.enterframe
+        while frame:
+            if self.break_anywhere(frame):
+                frame.f_trace = self.trace_dispatch
+            frame = frame.f_back
         return None
 
     def _load_breaks(self):
diff --git a/Lib/calendar.py b/Lib/calendar.py
index 833ce331b14a0c..8c1c646da46a98 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -27,7 +27,9 @@
 error = ValueError
 
 # Exceptions raised for bad input
-class IllegalMonthError(ValueError):
+# This is trick for backward compatibility. Since 3.13, we will raise IllegalMonthError instead of
+# IndexError for bad month number(out of 1-12). But we can't remove IndexError for backward compatibility.
+class IllegalMonthError(ValueError, IndexError):
     def __init__(self, month):
         self.month = month
     def __str__(self):
@@ -158,11 +160,14 @@ def weekday(year, month, day):
     return Day(datetime.date(year, month, day).weekday())
 
 
-def monthrange(year, month):
-    """Return weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
-       year, month."""
+def _validate_month(month):
     if not 1 <= month <= 12:
         raise IllegalMonthError(month)
+
+def monthrange(year, month):
+    """Return weekday of first day of month (0-6 ~ Mon-Sun)
+       and number of days (28-31) for year, month."""
+    _validate_month(month)
     day1 = weekday(year, month, 1)
     ndays = mdays[month] + (month == FEBRUARY and isleap(year))
     return day1, ndays
@@ -370,6 +375,8 @@ def formatmonthname(self, theyear, themonth, width, withyear=True):
         """
         Return a formatted month name.
         """
+        _validate_month(themonth)
+
         s = month_name[themonth]
         if withyear:
             s = "%s %r" % (s, theyear)
@@ -500,6 +507,7 @@ def formatmonthname(self, theyear, themonth, withyear=True):
         """
         Return a month name as a table row.
         """
+        _validate_month(themonth)
         if withyear:
             s = '%s %s' % (month_name[themonth], theyear)
         else:
@@ -786,6 +794,8 @@ def main(args=None):
         if options.month is None:
             optdict["c"] = options.spacing
             optdict["m"] = options.months
+        if options.month is not None:
+            _validate_month(options.month)
         if options.year is None:
             result = cal.formatyear(datetime.date.today().year, **optdict)
         elif options.month is None:
diff --git a/Lib/code.py b/Lib/code.py
index 9d124563f728c2..2777c3111877c2 100644
--- a/Lib/code.py
+++ b/Lib/code.py
@@ -13,6 +13,7 @@
 __all__ = ["InteractiveInterpreter", "InteractiveConsole", "interact",
            "compile_command"]
 
+
 class InteractiveInterpreter:
     """Base class for InteractiveConsole.
 
@@ -25,10 +26,10 @@ class InteractiveInterpreter:
     def __init__(self, locals=None):
         """Constructor.
 
-        The optional 'locals' argument specifies the dictionary in
-        which code will be executed; it defaults to a newly created
-        dictionary with key "__name__" set to "__console__" and key
-        "__doc__" set to None.
+        The optional 'locals' argument specifies a mapping to use as the
+        namespace in which code will be executed; it defaults to a newly
+        created dictionary with key "__name__" set to "__console__" and
+        key "__doc__" set to None.
 
         """
         if locals is None:
@@ -64,7 +65,7 @@ def runsource(self, source, filename="<input>", symbol="single"):
             code = self.compile(source, filename, symbol)
         except (OverflowError, SyntaxError, ValueError):
             # Case 1
-            self.showsyntaxerror(filename)
+            self.showsyntaxerror(filename, source=source)
             return False
 
         if code is None:
@@ -94,7 +95,7 @@ def runcode(self, code):
         except:
             self.showtraceback()
 
-    def showsyntaxerror(self, filename=None):
+    def showsyntaxerror(self, filename=None, **kwargs):
         """Display the syntax error that just occurred.
 
         This doesn't display a stack trace because there isn't one.
@@ -106,31 +107,16 @@ def showsyntaxerror(self, filename=None):
         The output is written by self.write(), below.
 
         """
-        type, value, tb = sys.exc_info()
-        sys.last_exc = value
-        sys.last_type = type
-        sys.last_value = value
-        sys.last_traceback = tb
-        if filename and type is SyntaxError:
-            # Work hard to stuff the correct filename in the exception
-            try:
-                msg, (dummy_filename, lineno, offset, line) = value.args
-            except ValueError:
-                # Not the format we expect; leave it alone
-                pass
-            else:
-                # Stuff in the right filename
-                value = SyntaxError(msg, (filename, lineno, offset, line))
-                sys.last_exc = sys.last_value = value
-        if sys.excepthook is sys.__excepthook__:
-            lines = traceback.format_exception_only(type, value)
-            self.write(''.join(lines))
-        else:
-            # If someone has set sys.excepthook, we let that take precedence
-            # over self.write
-            sys.excepthook(type, value, tb)
+        try:
+            typ, value, tb = sys.exc_info()
+            if filename and issubclass(typ, SyntaxError):
+                value.filename = filename
+            source = kwargs.pop('source', "")
+            self._showtraceback(typ, value, None, source)
+        finally:
+            typ = value = tb = None
 
-    def showtraceback(self, **kwargs):
+    def showtraceback(self):
         """Display the exception that just occurred.
 
         We remove the first stack item because it is our own code.
@@ -138,20 +124,46 @@ def showtraceback(self, **kwargs):
         The output is written by self.write(), below.
 
         """
-        colorize = kwargs.pop('colorize', False)
-        sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
-        sys.last_traceback = last_tb
-        sys.last_exc = ei[1]
         try:
-            lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next, colorize=colorize)
-            if sys.excepthook is sys.__excepthook__:
-                self.write(''.join(lines))
-            else:
-                # If someone has set sys.excepthook, we let that take precedence
-                # over self.write
-                sys.excepthook(ei[0], ei[1], last_tb)
+            typ, value, tb = sys.exc_info()
+            self._showtraceback(typ, value, tb.tb_next, '')
         finally:
-            last_tb = ei = None
+            typ = value = tb = None
+
+    def _showtraceback(self, typ, value, tb, source):
+        sys.last_type = typ
+        sys.last_traceback = tb
+        value = value.with_traceback(tb)
+        # Set the line of text that the exception refers to
+        lines = source.splitlines()
+        if (source and typ is SyntaxError
+                and not value.text and value.lineno is not None
+                and len(lines) >= value.lineno):
+            value.text = lines[value.lineno - 1]
+        sys.last_exc = sys.last_value = value = value.with_traceback(tb)
+        if sys.excepthook is sys.__excepthook__:
+            self._excepthook(typ, value, tb)
+        else:
+            # If someone has set sys.excepthook, we let that take precedence
+            # over self.write
+            try:
+                sys.excepthook(typ, value, tb)
+            except SystemExit:
+                raise
+            except BaseException as e:
+                e.__context__ = None
+                e = e.with_traceback(e.__traceback__.tb_next)
+                print('Error in sys.excepthook:', file=sys.stderr)
+                sys.__excepthook__(type(e), e, e.__traceback__)
+                print(file=sys.stderr)
+                print('Original exception was:', file=sys.stderr)
+                sys.__excepthook__(typ, value, tb)
+
+    def _excepthook(self, typ, value, tb):
+        # This method is being overwritten in
+        # _pyrepl.console.InteractiveColoredConsole
+        lines = traceback.format_exception(typ, value, tb)
+        self.write(''.join(lines))
 
     def write(self, data):
         """Write a string.
@@ -365,7 +377,7 @@ def interact(banner=None, readfunc=None, local=None, exitmsg=None, local_exit=Fa
 
     parser = argparse.ArgumentParser()
     parser.add_argument('-q', action='store_true',
-                       help="don't print version and copyright messages")
+                        help="don't print version and copyright messages")
     args = parser.parse_args()
     if args.q or sys.flags.quiet:
         banner = ''
diff --git a/Lib/codeop.py b/Lib/codeop.py
index 6ad60e7f85098d..adf000ba29f88c 100644
--- a/Lib/codeop.py
+++ b/Lib/codeop.py
@@ -44,6 +44,7 @@
 # Caveat emptor: These flags are undocumented on purpose and depending
 # on their effect outside the standard library is **unsupported**.
 PyCF_DONT_IMPLY_DEDENT = 0x200
+PyCF_ONLY_AST = 0x400
 PyCF_ALLOW_INCOMPLETE_INPUT = 0x4000
 
 def _maybe_compile(compiler, source, filename, symbol):
@@ -65,7 +66,7 @@ def _maybe_compile(compiler, source, filename, symbol):
             try:
                 compiler(source + "\n", filename, symbol)
                 return None
-            except IncompleteInputError as e:
+            except _IncompleteInputError as e:
                 return None
             except SyntaxError as e:
                 pass
@@ -109,12 +110,14 @@ class Compile:
     def __init__(self):
         self.flags = PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT
 
-    def __call__(self, source, filename, symbol, **kwargs):
-        flags = self.flags
+    def __call__(self, source, filename, symbol, flags=0, **kwargs):
+        flags |= self.flags
         if kwargs.get('incomplete_input', True) is False:
             flags &= ~PyCF_DONT_IMPLY_DEDENT
             flags &= ~PyCF_ALLOW_INCOMPLETE_INPUT
         codeob = compile(source, filename, symbol, flags, True)
+        if flags & PyCF_ONLY_AST:
+            return codeob  # this is an ast.Module in this case
         for feature in _features:
             if codeob.co_flags & feature.compiler_flag:
                 self.flags |= feature.compiler_flag
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index d06d84cbdfcc36..d29afffebf8447 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -29,6 +29,9 @@
 import _collections_abc
 import sys as _sys
 
+_sys.modules['collections.abc'] = _collections_abc
+abc = _collections_abc
+
 from itertools import chain as _chain
 from itertools import repeat as _repeat
 from itertools import starmap as _starmap
diff --git a/Lib/collections/abc.py b/Lib/collections/abc.py
deleted file mode 100644
index 86ca8b8a8414b3..00000000000000
--- a/Lib/collections/abc.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from _collections_abc import *
-from _collections_abc import __all__
-from _collections_abc import _CallableGenericAlias
diff --git a/Lib/colorsys.py b/Lib/colorsys.py
index bc897bd0f99298..e97f91718a3a30 100644
--- a/Lib/colorsys.py
+++ b/Lib/colorsys.py
@@ -24,7 +24,7 @@
 __all__ = ["rgb_to_yiq","yiq_to_rgb","rgb_to_hls","hls_to_rgb",
            "rgb_to_hsv","hsv_to_rgb"]
 
-# Some floating point constants
+# Some floating-point constants
 
 ONE_THIRD = 1.0/3.0
 ONE_SIXTH = 1.0/6.0
diff --git a/Lib/concurrent/futures/__init__.py b/Lib/concurrent/futures/__init__.py
index 292e886d5a88ac..72de617a5b6f61 100644
--- a/Lib/concurrent/futures/__init__.py
+++ b/Lib/concurrent/futures/__init__.py
@@ -23,6 +23,7 @@
     'ALL_COMPLETED',
     'CancelledError',
     'TimeoutError',
+    'InvalidStateError',
     'BrokenExecutor',
     'Future',
     'Executor',
diff --git a/Lib/concurrent/futures/process.py b/Lib/concurrent/futures/process.py
index bb4892ebdfedf5..d73ef716134175 100644
--- a/Lib/concurrent/futures/process.py
+++ b/Lib/concurrent/futures/process.py
@@ -68,27 +68,31 @@
 class _ThreadWakeup:
     def __init__(self):
         self._closed = False
+        self._lock = threading.Lock()
         self._reader, self._writer = mp.Pipe(duplex=False)
 
     def close(self):
-        # Please note that we do not take the shutdown lock when
+        # Please note that we do not take the self._lock when
         # calling clear() (to avoid deadlocking) so this method can
         # only be called safely from the same thread as all calls to
-        # clear() even if you hold the shutdown lock. Otherwise we
+        # clear() even if you hold the lock. Otherwise we
         # might try to read from the closed pipe.
-        if not self._closed:
-            self._closed = True
-            self._writer.close()
-            self._reader.close()
+        with self._lock:
+            if not self._closed:
+                self._closed = True
+                self._writer.close()
+                self._reader.close()
 
     def wakeup(self):
-        if not self._closed:
-            self._writer.send_bytes(b"")
+        with self._lock:
+            if not self._closed:
+                self._writer.send_bytes(b"")
 
     def clear(self):
-        if not self._closed:
-            while self._reader.poll():
-                self._reader.recv_bytes()
+        if self._closed:
+            raise RuntimeError('operation on closed _ThreadWakeup')
+        while self._reader.poll():
+            self._reader.recv_bytes()
 
 
 def _python_exit():
@@ -167,10 +171,8 @@ def __init__(self, work_id, fn, args, kwargs):
 
 class _SafeQueue(Queue):
     """Safe Queue set exception to the future object linked to a job"""
-    def __init__(self, max_size=0, *, ctx, pending_work_items, shutdown_lock,
-                 thread_wakeup):
+    def __init__(self, max_size=0, *, ctx, pending_work_items, thread_wakeup):
         self.pending_work_items = pending_work_items
-        self.shutdown_lock = shutdown_lock
         self.thread_wakeup = thread_wakeup
         super().__init__(max_size, ctx=ctx)
 
@@ -179,8 +181,7 @@ def _on_queue_feeder_error(self, e, obj):
             tb = format_exception(type(e), e, e.__traceback__)
             e.__cause__ = _RemoteTraceback('\n"""\n{}"""'.format(''.join(tb)))
             work_item = self.pending_work_items.pop(obj.work_id, None)
-            with self.shutdown_lock:
-                self.thread_wakeup.wakeup()
+            self.thread_wakeup.wakeup()
             # work_item can be None if another process terminated. In this
             # case, the executor_manager_thread fails all work_items
             # with BrokenProcessPool
@@ -296,12 +297,10 @@ def __init__(self, executor):
         # if there is no pending work item.
         def weakref_cb(_,
                        thread_wakeup=self.thread_wakeup,
-                       shutdown_lock=self.shutdown_lock,
                        mp_util_debug=mp.util.debug):
             mp_util_debug('Executor collected: triggering callback for'
                           ' QueueManager wakeup')
-            with shutdown_lock:
-                thread_wakeup.wakeup()
+            thread_wakeup.wakeup()
 
         self.executor_reference = weakref.ref(executor, weakref_cb)
 
@@ -429,11 +428,6 @@ def wait_result_broken_or_wakeup(self):
         elif wakeup_reader in ready:
             is_broken = False
 
-        # No need to hold the _shutdown_lock here because:
-        # 1. we're the only thread to use the wakeup reader
-        # 2. we're also the only thread to call thread_wakeup.close()
-        # 3. we want to avoid a possible deadlock when both reader and writer
-        #    would block (gh-105829)
         self.thread_wakeup.clear()
 
         return result_item, is_broken, cause
@@ -721,10 +715,9 @@ def __init__(self, max_workers=None, mp_context=None,
         # as it could result in a deadlock if a worker process dies with the
         # _result_queue write lock still acquired.
         #
-        # _shutdown_lock must be locked to access _ThreadWakeup.close() and
-        # .wakeup(). Care must also be taken to not call clear or close from
-        # more than one thread since _ThreadWakeup.clear() is not protected by
-        # the _shutdown_lock
+        # Care must be taken to only call clear and close from the
+        # executor_manager_thread, since _ThreadWakeup.clear() is not protected
+        # by a lock.
         self._executor_manager_thread_wakeup = _ThreadWakeup()
 
         # Create communication channels for the executor
@@ -735,7 +728,6 @@ def __init__(self, max_workers=None, mp_context=None,
         self._call_queue = _SafeQueue(
             max_size=queue_size, ctx=self._mp_context,
             pending_work_items=self._pending_work_items,
-            shutdown_lock=self._shutdown_lock,
             thread_wakeup=self._executor_manager_thread_wakeup)
         # Killed worker processes can produce spurious "broken pipe"
         # tracebacks in the queue's own worker thread. But we detect killed
diff --git a/Lib/concurrent/futures/thread.py b/Lib/concurrent/futures/thread.py
index a024033f35fb54..9021dde48ef1e4 100644
--- a/Lib/concurrent/futures/thread.py
+++ b/Lib/concurrent/futures/thread.py
@@ -41,6 +41,7 @@ def _python_exit():
     os.register_at_fork(before=_global_shutdown_lock.acquire,
                         after_in_child=_global_shutdown_lock._at_fork_reinit,
                         after_in_parent=_global_shutdown_lock.release)
+    os.register_at_fork(after_in_child=_threads_queues.clear)
 
 
 class _WorkItem:
diff --git a/Lib/copy.py b/Lib/copy.py
index a69bc4e78c20b3..2a4606246aa911 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -4,8 +4,9 @@
 
         import copy
 
-        x = copy.copy(y)        # make a shallow copy of y
-        x = copy.deepcopy(y)    # make a deep copy of y
+        x = copy.copy(y)                # make a shallow copy of y
+        x = copy.deepcopy(y)            # make a deep copy of y
+        x = copy.replace(y, a=1, b=2)   # new object with fields replaced, as defined by `__replace__`
 
 For module specific errors, copy.Error is raised.
 
@@ -56,7 +57,7 @@ class Error(Exception):
     pass
 error = Error   # backward compatibility
 
-__all__ = ["Error", "copy", "deepcopy"]
+__all__ = ["Error", "copy", "deepcopy", "replace"]
 
 def copy(x):
     """Shallow copy operation on arbitrary Python objects.
diff --git a/Lib/csv.py b/Lib/csv.py
index 75e35b23236795..cd202659873811 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -47,7 +47,7 @@ class excel:
             field contains either the quotechar or the delimiter
         csv.QUOTE_ALL means that quotes are always placed around fields.
         csv.QUOTE_NONNUMERIC means that quotes are always placed around
-            fields which do not parse as integers or floating point
+            fields which do not parse as integers or floating-point
             numbers.
         csv.QUOTE_STRINGS means that quotes are always placed around
             fields which are strings.  Note that the Python value None
diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py
index b7ee46d664ab08..8261773cef9830 100644
--- a/Lib/ctypes/__init__.py
+++ b/Lib/ctypes/__init__.py
@@ -314,8 +314,6 @@ def SetPointerType(pointer, cls):
     del _pointer_type_cache[id(pointer)]
 
 def ARRAY(typ, len):
-    import warnings
-    warnings._deprecated("ctypes.ARRAY", remove=(3, 15))
     return typ * len
 
 ################################################################
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py
index 3acd03cd865234..7883ce78e57d50 100644
--- a/Lib/dataclasses.py
+++ b/Lib/dataclasses.py
@@ -7,7 +7,6 @@
 import itertools
 import abc
 from reprlib import recursive_repr
-from types import FunctionType, GenericAlias
 
 
 __all__ = ['dataclass',
@@ -333,7 +332,7 @@ def __set_name__(self, owner, name):
             # it.
             func(self.default, owner, name)
 
-    __class_getitem__ = classmethod(GenericAlias)
+    __class_getitem__ = classmethod(types.GenericAlias)
 
 
 class _DataclassParams:
@@ -1199,10 +1198,17 @@ def _dataclass_setstate(self, state):
 
 def _get_slots(cls):
     match cls.__dict__.get('__slots__'):
-        # A class which does not define __slots__ at all is equivalent
-        # to a class defining __slots__ = ('__dict__', '__weakref__')
+        # `__dictoffset__` and `__weakrefoffset__` can tell us whether
+        # the base type has dict/weakref slots, in a way that works correctly
+        # for both Python classes and C extension types. Extension types
+        # don't use `__slots__` for slot creation
         case None:
-            yield from ('__dict__', '__weakref__')
+            slots = []
+            if getattr(cls, '__weakrefoffset__', -1) != 0:
+                slots.append('__weakref__')
+            if getattr(cls, '__dictoffset__', -1) != 0:
+                slots.append('__dict__')
+            yield from slots
         case str(slot):
             yield slot
         # Slots may be any iterable, but we cannot handle an iterator
diff --git a/Lib/dbm/sqlite3.py b/Lib/dbm/sqlite3.py
index 74c9d9b7e2f1d8..7e0ae2a29e3a64 100644
--- a/Lib/dbm/sqlite3.py
+++ b/Lib/dbm/sqlite3.py
@@ -1,6 +1,5 @@
 import os
 import sqlite3
-import sys
 from pathlib import Path
 from contextlib import suppress, closing
 from collections.abc import MutableMapping
diff --git a/Lib/decimal.py b/Lib/decimal.py
index d61e374b9f9998..ee3147f5dde270 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -1,6 +1,6 @@
-"""Decimal fixed point and floating point arithmetic.
+"""Decimal fixed-point and floating-point arithmetic.
 
-This is an implementation of decimal floating point arithmetic based on
+This is an implementation of decimal floating-point arithmetic based on
 the General Decimal Arithmetic Specification:
 
     http://speleotrove.com/decimal/decarith.html
@@ -103,6 +103,7 @@
     from _decimal import __version__
     from _decimal import __libmpdec_version__
 except ImportError:
-    from _pydecimal import *
-    from _pydecimal import __version__
-    from _pydecimal import __libmpdec_version__
+    import _pydecimal
+    import sys
+    _pydecimal.__doc__ = __doc__
+    sys.modules[__name__] = _pydecimal
diff --git a/Lib/dis.py b/Lib/dis.py
index 76934eb00e63f0..797e0f8a0888d0 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -1051,7 +1051,7 @@ def dis(self):
             return output.getvalue()
 
 
-def main():
+def main(args=None):
     import argparse
 
     parser = argparse.ArgumentParser()
@@ -1060,7 +1060,7 @@ def main():
     parser.add_argument('-O', '--show-offsets', action='store_true',
                         help='show instruction offsets')
     parser.add_argument('infile', nargs='?', default='-')
-    args = parser.parse_args()
+    args = parser.parse_args(args=args)
     if args.infile == '-':
         name = '<stdin>'
         source = sys.stdin.buffer.read()
diff --git a/Lib/doctest.py b/Lib/doctest.py
index c531e3ca6a3d5e..dd4d62a210a902 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -1558,7 +1558,7 @@ def out(s):
         save_displayhook = sys.displayhook
         sys.displayhook = sys.__displayhook__
         saved_can_colorize = _colorize.can_colorize
-        _colorize.can_colorize = lambda: False
+        _colorize.can_colorize = lambda *args, **kwargs: False
         color_variables = {"PYTHON_COLORS": None, "FORCE_COLOR": None}
         for key in color_variables:
             color_variables[key] = os.environ.pop(key, None)
diff --git a/Lib/email/_header_value_parser.py b/Lib/email/_header_value_parser.py
index d1b4c7df4f445f..3d845c09d415f6 100644
--- a/Lib/email/_header_value_parser.py
+++ b/Lib/email/_header_value_parser.py
@@ -92,9 +92,19 @@
 ASPECIALS = TSPECIALS | set("*'%")
 ATTRIBUTE_ENDS = ASPECIALS | WSP
 EXTENDED_ATTRIBUTE_ENDS = ATTRIBUTE_ENDS - set('%')
+NLSET = {'\n', '\r'}
+SPECIALSNL = SPECIALS | NLSET
+
+
+def make_quoted_pairs(value):
+    """Escape dquote and backslash for use within a quoted-string."""
+    return str(value).replace('\\', '\\\\').replace('"', '\\"')
+
 
 def quote_string(value):
-    return '"'+str(value).replace('\\', '\\\\').replace('"', r'\"')+'"'
+    escaped = make_quoted_pairs(value)
+    return f'"{escaped}"'
+
 
 # Match a RFC 2047 word, looks like =?utf-8?q?someword?=
 rfc2047_matcher = re.compile(r'''
@@ -956,6 +966,7 @@ class _InvalidEwError(errors.HeaderParseError):
 DOT = ValueTerminal('.', 'dot')
 ListSeparator = ValueTerminal(',', 'list-separator')
 ListSeparator.as_ew_allowed = False
+ListSeparator.syntactic_break = False
 RouteComponentMarker = ValueTerminal('@', 'route-component-marker')
 
 #
@@ -2784,11 +2795,15 @@ def _refold_parse_tree(parse_tree, *, policy):
     # max_line_length 0/None means no limit, ie: infinitely long.
     maxlen = policy.max_line_length or sys.maxsize
     encoding = 'utf-8' if policy.utf8 else 'us-ascii'
-    lines = ['']
-    last_ew = None
+    lines = ['']  # Folded lines to be output
+    leading_whitespace = ''  # When we have whitespace between two encoded
+                             # words, we may need to encode the whitespace
+                             # at the beginning of the second word.
+    last_ew = None  # Points to the last encoded character if there's an ew on
+                    # the line
     last_charset = None
     wrap_as_ew_blocked = 0
-    want_encoding = False
+    want_encoding = False  # This is set to True if we need to encode this part
     end_ew_not_allowed = Terminal('', 'wrap_as_ew_blocked')
     parts = list(parse_tree)
     while parts:
@@ -2797,9 +2812,13 @@ def _refold_parse_tree(parse_tree, *, policy):
             wrap_as_ew_blocked -= 1
             continue
         tstr = str(part)
-        if part.token_type == 'ptext' and set(tstr) & SPECIALS:
-            # Encode if tstr contains special characters.
-            want_encoding = True
+        if not want_encoding:
+            if part.token_type == 'ptext':
+                # Encode if tstr contains special characters.
+                want_encoding = not SPECIALSNL.isdisjoint(tstr)
+            else:
+                # Encode if tstr contains newlines.
+                want_encoding = not NLSET.isdisjoint(tstr)
         try:
             tstr.encode(encoding)
             charset = encoding
@@ -2812,10 +2831,12 @@ def _refold_parse_tree(parse_tree, *, policy):
                 # 'charset' property on the policy.
                 charset = 'utf-8'
             want_encoding = True
+
         if part.token_type == 'mime-parameters':
             # Mime parameter folding (using RFC2231) is extra special.
             _fold_mime_parameters(part, lines, maxlen, encoding)
             continue
+
         if want_encoding and not wrap_as_ew_blocked:
             if not part.as_ew_allowed:
                 want_encoding = False
@@ -2838,7 +2859,9 @@ def _refold_parse_tree(parse_tree, *, policy):
             if not hasattr(part, 'encode'):
                 # It's not a Terminal, do each piece individually.
                 parts = list(part) + parts
-            else:
+                want_encoding = False
+                continue
+            elif part.as_ew_allowed:
                 # It's a terminal, wrap it as an encoded word, possibly
                 # combining it with previously encoded words if allowed.
                 if (last_ew is not None and
@@ -2847,26 +2870,58 @@ def _refold_parse_tree(parse_tree, *, policy):
                      last_charset == 'utf-8' and charset != 'us-ascii')):
                     last_ew = None
                 last_ew = _fold_as_ew(tstr, lines, maxlen, last_ew,
-                                      part.ew_combine_allowed, charset)
+                                      part.ew_combine_allowed, charset, leading_whitespace)
+                # This whitespace has been added to the lines in _fold_as_ew()
+                # so clear it now.
+                leading_whitespace = ''
                 last_charset = charset
-            want_encoding = False
-            continue
+                want_encoding = False
+                continue
+            else:
+                # It's a terminal which should be kept non-encoded
+                # (e.g. a ListSeparator).
+                last_ew = None
+                want_encoding = False
+                # fall through
+
         if len(tstr) <= maxlen - len(lines[-1]):
             lines[-1] += tstr
             continue
+
         # This part is too long to fit.  The RFC wants us to break at
         # "major syntactic breaks", so unless we don't consider this
         # to be one, check if it will fit on the next line by itself.
+        leading_whitespace = ''
         if (part.syntactic_break and
                 len(tstr) + 1 <= maxlen):
             newline = _steal_trailing_WSP_if_exists(lines)
             if newline or part.startswith_fws():
+                # We're going to fold the data onto a new line here.  Due to
+                # the way encoded strings handle continuation lines, we need to
+                # be prepared to encode any whitespace if the next line turns
+                # out to start with an encoded word.
                 lines.append(newline + tstr)
+
+                whitespace_accumulator = []
+                for char in lines[-1]:
+                    if char not in WSP:
+                        break
+                    whitespace_accumulator.append(char)
+                leading_whitespace = ''.join(whitespace_accumulator)
                 last_ew = None
                 continue
         if not hasattr(part, 'encode'):
             # It's not a terminal, try folding the subparts.
             newparts = list(part)
+            if part.token_type == 'bare-quoted-string':
+                # To fold a quoted string we need to create a list of terminal
+                # tokens that will render the leading and trailing quotes
+                # and use quoted pairs in the value as appropriate.
+                newparts = (
+                    [ValueTerminal('"', 'ptext')] +
+                    [ValueTerminal(make_quoted_pairs(p), 'ptext')
+                     for p in newparts] +
+                    [ValueTerminal('"', 'ptext')])
             if not part.as_ew_allowed:
                 wrap_as_ew_blocked += 1
                 newparts.append(end_ew_not_allowed)
@@ -2885,9 +2940,10 @@ def _refold_parse_tree(parse_tree, *, policy):
         else:
             # We can't fold it onto the next line either...
             lines[-1] += tstr
+
     return policy.linesep.join(lines) + policy.linesep
 
-def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset):
+def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset, leading_whitespace):
     """Fold string to_encode into lines as encoded word, combining if allowed.
     Return the new value for last_ew, or None if ew_combine_allowed is False.
 
@@ -2902,7 +2958,7 @@ def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset):
         to_encode = str(
             get_unstructured(lines[-1][last_ew:] + to_encode))
         lines[-1] = lines[-1][:last_ew]
-    if to_encode[0] in WSP:
+    elif to_encode[0] in WSP:
         # We're joining this to non-encoded text, so don't encode
         # the leading blank.
         leading_wsp = to_encode[0]
@@ -2910,6 +2966,7 @@ def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset):
         if (len(lines[-1]) == maxlen):
             lines.append(_steal_trailing_WSP_if_exists(lines))
         lines[-1] += leading_wsp
+
     trailing_wsp = ''
     if to_encode[-1] in WSP:
         # Likewise for the trailing space.
@@ -2929,11 +2986,20 @@ def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset):
 
     while to_encode:
         remaining_space = maxlen - len(lines[-1])
-        text_space = remaining_space - chrome_len
+        text_space = remaining_space - chrome_len - len(leading_whitespace)
         if text_space <= 0:
             lines.append(' ')
             continue
 
+        # If we are at the start of a continuation line, prepend whitespace
+        # (we only want to do this when the line starts with an encoded word
+        # but if we're folding in this helper function, then we know that we
+        # are going to be writing out an encoded word.)
+        if len(lines) > 1 and len(lines[-1]) == 1 and leading_whitespace:
+            encoded_word = _ew.encode(leading_whitespace, charset=encode_as)
+            lines[-1] += encoded_word
+            leading_whitespace = ''
+
         to_encode_word = to_encode[:text_space]
         encoded_word = _ew.encode(to_encode_word, charset=encode_as)
         excess = len(encoded_word) - remaining_space
@@ -2945,6 +3011,7 @@ def _fold_as_ew(to_encode, lines, maxlen, last_ew, ew_combine_allowed, charset):
             excess = len(encoded_word) - remaining_space
         lines[-1] += encoded_word
         to_encode = to_encode[len(to_encode_word):]
+        leading_whitespace = ''
 
         if to_encode:
             lines.append(' ')
diff --git a/Lib/email/_policybase.py b/Lib/email/_policybase.py
index 2ec54fbabae83c..c9f0d743090e54 100644
--- a/Lib/email/_policybase.py
+++ b/Lib/email/_policybase.py
@@ -157,6 +157,13 @@ class Policy(_PolicyBase, metaclass=abc.ABCMeta):
     message_factory     -- the class to use to create new message objects.
                            If the value is None, the default is Message.
 
+    verify_generated_headers
+                        -- if true, the generator verifies that each header
+                           they are properly folded, so that a parser won't
+                           treat it as multiple headers, start-of-body, or
+                           part of another header.
+                           This is a check against custom Header & fold()
+                           implementations.
     """
 
     raise_on_defect = False
@@ -165,6 +172,7 @@ class Policy(_PolicyBase, metaclass=abc.ABCMeta):
     max_line_length = 78
     mangle_from_ = False
     message_factory = None
+    verify_generated_headers = True
 
     def handle_defect(self, obj, defect):
         """Based on policy, either raise defect or call register_defect.
@@ -294,12 +302,12 @@ def header_source_parse(self, sourcelines):
         """+
         The name is parsed as everything up to the ':' and returned unmodified.
         The value is determined by stripping leading whitespace off the
-        remainder of the first line, joining all subsequent lines together, and
+        remainder of the first line joined with all subsequent lines, and
         stripping any trailing carriage return or linefeed characters.
 
         """
         name, value = sourcelines[0].split(':', 1)
-        value = value.lstrip(' \t') + ''.join(sourcelines[1:])
+        value = ''.join((value, *sourcelines[1:])).lstrip(' \t\r\n')
         return (name, value.rstrip('\r\n'))
 
     def header_store_parse(self, name, value):
diff --git a/Lib/email/errors.py b/Lib/email/errors.py
index 3ad00565549968..02aa5eced6ae46 100644
--- a/Lib/email/errors.py
+++ b/Lib/email/errors.py
@@ -29,6 +29,10 @@ class CharsetError(MessageError):
     """An illegal charset was given."""
 
 
+class HeaderWriteError(MessageError):
+    """Error while writing headers."""
+
+
 # These are parsing defects which the parser was able to work around.
 class MessageDefect(ValueError):
     """Base class for a message defect."""
diff --git a/Lib/email/generator.py b/Lib/email/generator.py
index c8056ad47baa0f..47b9df8f4e6090 100644
--- a/Lib/email/generator.py
+++ b/Lib/email/generator.py
@@ -14,12 +14,14 @@
 from copy import deepcopy
 from io import StringIO, BytesIO
 from email.utils import _has_surrogates
+from email.errors import HeaderWriteError
 
 UNDERSCORE = '_'
 NL = '\n'  # XXX: no longer used by the code below.
 
 NLCRE = re.compile(r'\r\n|\r|\n')
 fcre = re.compile(r'^From ', re.MULTILINE)
+NEWLINE_WITHOUT_FWSP = re.compile(r'\r\n[^ \t]|\r[^ \n\t]|\n[^ \t]')
 
 
 class Generator:
@@ -222,7 +224,16 @@ def _dispatch(self, msg):
 
     def _write_headers(self, msg):
         for h, v in msg.raw_items():
-            self.write(self.policy.fold(h, v))
+            folded = self.policy.fold(h, v)
+            if self.policy.verify_generated_headers:
+                linesep = self.policy.linesep
+                if not folded.endswith(self.policy.linesep):
+                    raise HeaderWriteError(
+                        f'folded header does not end with {linesep!r}: {folded!r}')
+                if NEWLINE_WITHOUT_FWSP.search(folded.removesuffix(linesep)):
+                    raise HeaderWriteError(
+                        f'folded header contains newline: {folded!r}')
+            self.write(folded)
         # A blank line always separates headers from body
         self.write(self._NL)
 
diff --git a/Lib/email/message.py b/Lib/email/message.py
index 46bb8c21942af8..6b7c3a2377765a 100644
--- a/Lib/email/message.py
+++ b/Lib/email/message.py
@@ -286,8 +286,12 @@ def get_payload(self, i=None, decode=False):
         if i is not None and not isinstance(self._payload, list):
             raise TypeError('Expected list, got %s' % type(self._payload))
         payload = self._payload
-        # cte might be a Header, so for now stringify it.
-        cte = str(self.get('content-transfer-encoding', '')).lower()
+        cte = self.get('content-transfer-encoding', '')
+        if hasattr(cte, 'cte'):
+            cte = cte.cte
+        else:
+            # cte might be a Header, so for now stringify it.
+            cte = str(cte).strip().lower()
         # payload may be bytes here.
         if not decode:
             if isinstance(payload, str) and utils._has_surrogates(payload):
diff --git a/Lib/email/policy.py b/Lib/email/policy.py
index 46b7de5bb6d8ae..6e109b65011a44 100644
--- a/Lib/email/policy.py
+++ b/Lib/email/policy.py
@@ -119,13 +119,13 @@ def header_source_parse(self, sourcelines):
         """+
         The name is parsed as everything up to the ':' and returned unmodified.
         The value is determined by stripping leading whitespace off the
-        remainder of the first line, joining all subsequent lines together, and
+        remainder of the first line joined with all subsequent lines, and
         stripping any trailing carriage return or linefeed characters.  (This
         is the same as Compat32).
 
         """
         name, value = sourcelines[0].split(':', 1)
-        value = value.lstrip(' \t') + ''.join(sourcelines[1:])
+        value = ''.join((value, *sourcelines[1:])).lstrip(' \t\r\n')
         return (name, value.rstrip('\r\n'))
 
     def header_store_parse(self, name, value):
diff --git a/Lib/email/utils.py b/Lib/email/utils.py
index 103cef61a83538..e42674fa4f3b75 100644
--- a/Lib/email/utils.py
+++ b/Lib/email/utils.py
@@ -241,7 +241,7 @@ def formatdate(timeval=None, localtime=False, usegmt=False):
 
     Fri, 09 Nov 2001 01:08:47 -0000
 
-    Optional timeval if given is a floating point time value as accepted by
+    Optional timeval if given is a floating-point time value as accepted by
     gmtime() and localtime(), otherwise the current time is used.
 
     Optional localtime is a flag that when True, interprets timeval, and
diff --git a/Lib/ensurepip/__init__.py b/Lib/ensurepip/__init__.py
index e8dd253bb55520..df0685b1989681 100644
--- a/Lib/ensurepip/__init__.py
+++ b/Lib/ensurepip/__init__.py
@@ -10,7 +10,7 @@
 
 
 __all__ = ["version", "bootstrap"]
-_PIP_VERSION = "24.0"
+_PIP_VERSION = "24.3.1"
 
 # Directory of system wheel packages. Some Linux distribution packaging
 # policies recommend against bundling dependencies. For example, Fedora
diff --git a/Lib/ensurepip/_bundled/pip-24.0-py3-none-any.whl b/Lib/ensurepip/_bundled/pip-24.0-py3-none-any.whl
deleted file mode 100644
index 2e6aa9d2cb9923..00000000000000
Binary files a/Lib/ensurepip/_bundled/pip-24.0-py3-none-any.whl and /dev/null differ
diff --git a/Lib/ensurepip/_bundled/pip-24.3.1-py3-none-any.whl b/Lib/ensurepip/_bundled/pip-24.3.1-py3-none-any.whl
new file mode 100644
index 00000000000000..5f1d35be6dd56b
Binary files /dev/null and b/Lib/ensurepip/_bundled/pip-24.3.1-py3-none-any.whl differ
diff --git a/Lib/enum.py b/Lib/enum.py
index c36fc75a24a239..37f16976bbacde 100644
--- a/Lib/enum.py
+++ b/Lib/enum.py
@@ -1,5 +1,6 @@
 import sys
 import builtins as bltns
+from functools import partial
 from types import MappingProxyType, DynamicClassAttribute
 
 
@@ -37,7 +38,7 @@ def _is_descriptor(obj):
     """
     Returns True if obj is a descriptor, False otherwise.
     """
-    return (
+    return not isinstance(obj, partial) and (
             hasattr(obj, '__get__') or
             hasattr(obj, '__set__') or
             hasattr(obj, '__delete__')
@@ -327,6 +328,8 @@ def __set_name__(self, enum_class, member_name):
             # to the map, and by-value lookups for this value will be
             # linear.
             enum_class._value2member_map_.setdefault(value, enum_member)
+            if value not in enum_class._hashable_values_:
+                enum_class._hashable_values_.append(value)
         except TypeError:
             # keep track of the value in a list so containment checks are quick
             enum_class._unhashable_values_.append(value)
@@ -340,12 +343,13 @@ class EnumDict(dict):
     EnumType will use the names found in self._member_names as the
     enumeration member names.
     """
-    def __init__(self):
+    def __init__(self, cls_name=None):
         super().__init__()
         self._member_names = {} # use a dict -- faster look-up than a list, and keeps insertion order since 3.7
         self._last_values = []
         self._ignore = []
         self._auto_called = False
+        self._cls_name = cls_name
 
     def __setitem__(self, key, value):
         """
@@ -356,7 +360,7 @@ def __setitem__(self, key, value):
 
         Single underscore (sunder) names are reserved.
         """
-        if _is_private(self._cls_name, key):
+        if self._cls_name is not None and _is_private(self._cls_name, key):
             # do nothing, name will be a normal attribute
             pass
         elif _is_sunder(key):
@@ -402,9 +406,15 @@ def __setitem__(self, key, value):
         elif isinstance(value, nonmember):
             # unwrap value here; it won't be processed by the below `else`
             value = value.value
+        elif isinstance(value, partial):
+            import warnings
+            warnings.warn('functools.partial will be a method descriptor '
+                          'in future Python versions; wrap it in '
+                          'enum.member() if you want to preserve the '
+                          'old behavior', FutureWarning, stacklevel=2)
         elif _is_descriptor(value):
             pass
-        elif _is_internal_class(self._cls_name, value):
+        elif self._cls_name is not None and _is_internal_class(self._cls_name, value):
             # do nothing, name will be a normal attribute
             pass
         else:
@@ -442,7 +452,7 @@ def __setitem__(self, key, value):
                         # accepts iterable as multiple arguments?
                         value = t(auto_valued)
                     except TypeError:
-                        # then pass them in singlely
+                        # then pass them in singly
                         value = t(*auto_valued)
             self._member_names[key] = None
             if non_auto_store:
@@ -476,8 +486,7 @@ def __prepare__(metacls, cls, bases, **kwds):
         # check that previous enum members do not exist
         metacls._check_for_existing_members_(cls, bases)
         # create the namespace dict
-        enum_dict = EnumDict()
-        enum_dict._cls_name = cls
+        enum_dict = EnumDict(cls)
         # inherit previous flags and _generate_next_value_ function
         member_type, first_enum = metacls._get_mixins_(cls, bases)
         if first_enum is not None:
@@ -538,7 +547,8 @@ def __new__(metacls, cls, bases, classdict, *, boundary=None, _simple=False, **k
         classdict['_member_names_'] = []
         classdict['_member_map_'] = {}
         classdict['_value2member_map_'] = {}
-        classdict['_unhashable_values_'] = []
+        classdict['_hashable_values_'] = []          # for comparing with non-hashable types
+        classdict['_unhashable_values_'] = []       # e.g. frozenset() with set()
         classdict['_unhashable_values_map_'] = {}
         classdict['_member_type_'] = member_type
         # now set the __repr__ for the value
@@ -554,22 +564,16 @@ def __new__(metacls, cls, bases, classdict, *, boundary=None, _simple=False, **k
         classdict['_all_bits_'] = 0
         classdict['_inverted_'] = None
         try:
-            exc = None
             classdict['_%s__in_progress' % cls] = True
             enum_class = super().__new__(metacls, cls, bases, classdict, **kwds)
             classdict['_%s__in_progress' % cls] = False
             delattr(enum_class, '_%s__in_progress' % cls)
         except Exception as e:
-            # since 3.12 the line "Error calling __set_name__ on '_proto_member' instance ..."
-            # is tacked on to the error instead of raising a RuntimeError
-            # recreate the exception to discard
-            exc = type(e)(str(e))
-            exc.__cause__ = e.__cause__
-            exc.__context__ = e.__context__
-            tb = e.__traceback__
-        if exc is not None:
-            raise exc.with_traceback(tb)
-        #
+            # since 3.12 the note "Error calling __set_name__ on '_proto_member' instance ..."
+            # is tacked on to the error instead of raising a RuntimeError, so discard it
+            if hasattr(e, '__notes__'):
+                del e.__notes__
+            raise
         # update classdict with any changes made by __init_subclass__
         classdict.update(enum_class.__dict__)
         #
@@ -748,7 +752,10 @@ def __contains__(cls, value):
         try:
             return value in cls._value2member_map_
         except TypeError:
-            return value in cls._unhashable_values_
+            return (
+                    value in cls._unhashable_values_    # both structures are lists
+                    or value in cls._hashable_values_
+                    )
 
     def __delattr__(cls, attr):
         # nicer error message when someone tries to delete an attribute
@@ -1158,8 +1165,11 @@ def __new__(cls, value):
             pass
         except TypeError:
             # not there, now do long search -- O(n) behavior
-            for name, values in cls._unhashable_values_map_.items():
-                if value in values:
+            for name, unhashable_values in cls._unhashable_values_map_.items():
+                if value in unhashable_values:
+                    return cls[name]
+            for name, member in cls._member_map_.items():
+                if value == member._value_:
                     return cls[name]
         # still not found -- verify that members exist, in-case somebody got here mistakenly
         # (such as via super when trying to override __new__)
@@ -1225,6 +1235,7 @@ def _add_value_alias_(self, value):
             # to the map, and by-value lookups for this value will be
             # linear.
             cls._value2member_map_.setdefault(value, self)
+            cls._hashable_values_.append(value)
         except TypeError:
             # keep track of the value in a list so containment checks are quick
             cls._unhashable_values_.append(value)
@@ -1755,6 +1766,7 @@ def convert_class(cls):
         body['_member_names_'] = member_names = []
         body['_member_map_'] = member_map = {}
         body['_value2member_map_'] = value2member_map = {}
+        body['_hashable_values_'] = hashable_values = []
         body['_unhashable_values_'] = unhashable_values = []
         body['_unhashable_values_map_'] = {}
         body['_member_type_'] = member_type = etype._member_type_
@@ -1818,7 +1830,7 @@ def convert_class(cls):
                     contained = value2member_map.get(member._value_)
                 except TypeError:
                     contained = None
-                    if member._value_ in unhashable_values:
+                    if member._value_ in unhashable_values or member.value in hashable_values:
                         for m in enum_class:
                             if m._value_ == member._value_:
                                 contained = m
@@ -1838,6 +1850,7 @@ def convert_class(cls):
                     else:
                         enum_class._add_member_(name, member)
                     value2member_map[value] = member
+                    hashable_values.append(value)
                     if _is_single_bit(value):
                         # not a multi-bit alias, record in _member_names_ and _flag_mask_
                         member_names.append(name)
@@ -1874,7 +1887,7 @@ def convert_class(cls):
                     contained = value2member_map.get(member._value_)
                 except TypeError:
                     contained = None
-                    if member._value_ in unhashable_values:
+                    if member._value_ in unhashable_values or member._value_ in hashable_values:
                         for m in enum_class:
                             if m._value_ == member._value_:
                                 contained = m
@@ -1900,6 +1913,8 @@ def convert_class(cls):
                         # to the map, and by-value lookups for this value will be
                         # linear.
                         enum_class._value2member_map_.setdefault(value, member)
+                        if value not in hashable_values:
+                            hashable_values.append(value)
                     except TypeError:
                         # keep track of the value in a list so containment checks are quick
                         enum_class._unhashable_values_.append(value)
diff --git a/Lib/filecmp.py b/Lib/filecmp.py
index 6ffc71fc059a80..c5b8d854d77de3 100644
--- a/Lib/filecmp.py
+++ b/Lib/filecmp.py
@@ -88,7 +88,7 @@ def _do_cmp(f1, f2):
 class dircmp:
     """A class that manages the comparison of 2 directories.
 
-    dircmp(a, b, ignore=None, hide=None, shallow=True)
+    dircmp(a, b, ignore=None, hide=None, *, shallow=True)
       A and B are directories.
       IGNORE is a list of names to ignore,
         defaults to DEFAULT_IGNORES.
@@ -124,7 +124,7 @@ class dircmp:
        in common_dirs.
      """
 
-    def __init__(self, a, b, ignore=None, hide=None, shallow=True): # Initialize
+    def __init__(self, a, b, ignore=None, hide=None, *, shallow=True): # Initialize
         self.left = a
         self.right = b
         if hide is None:
@@ -164,12 +164,14 @@ def phase2(self): # Distinguish files, directories, funnies
             ok = True
             try:
                 a_stat = os.stat(a_path)
-            except OSError:
+            except (OSError, ValueError):
+                # See https://github.com/python/cpython/issues/122400
+                # for the rationale for protecting against ValueError.
                 # print('Can\'t stat', a_path, ':', why.args[1])
                 ok = False
             try:
                 b_stat = os.stat(b_path)
-            except OSError:
+            except (OSError, ValueError):
                 # print('Can\'t stat', b_path, ':', why.args[1])
                 ok = False
 
@@ -201,7 +203,7 @@ def phase4(self): # Find out differences between common subdirectories
             a_x = os.path.join(self.left, x)
             b_x = os.path.join(self.right, x)
             self.subdirs[x]  = self.__class__(a_x, b_x, self.ignore, self.hide,
-                                              self.shallow)
+                                              shallow=self.shallow)
 
     def phase4_closure(self): # Recursively call phase4() on subdirectories
         self.phase4()
@@ -285,12 +287,12 @@ def cmpfiles(a, b, common, shallow=True):
 # Return:
 #       0 for equal
 #       1 for different
-#       2 for funny cases (can't stat, etc.)
+#       2 for funny cases (can't stat, NUL bytes, etc.)
 #
 def _cmp(a, b, sh, abs=abs, cmp=cmp):
     try:
         return not abs(cmp(a, b, sh))
-    except OSError:
+    except (OSError, ValueError):
         return 2
 
 
diff --git a/Lib/fractions.py b/Lib/fractions.py
index f8c6c9c438c737..e71ef58f18b3db 100644
--- a/Lib/fractions.py
+++ b/Lib/fractions.py
@@ -875,8 +875,10 @@ def __pow__(a, b):
                 # A fractional power will generally produce an
                 # irrational number.
                 return float(a) ** float(b)
-        else:
+        elif isinstance(b, (float, complex)):
             return float(a) ** b
+        else:
+            return NotImplemented
 
     def __rpow__(b, a):
         """a ** b"""
diff --git a/Lib/functools.py b/Lib/functools.py
index a80e1a6c6a56ac..2bc5053bd1b53f 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -239,12 +239,14 @@ def reduce(function, sequence, initial=_initial_missing):
     """
     reduce(function, iterable[, initial], /) -> value
 
-    Apply a function of two arguments cumulatively to the items of a sequence
-    or iterable, from left to right, so as to reduce the iterable to a single
-    value.  For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates
-    ((((1+2)+3)+4)+5).  If initial is present, it is placed before the items
-    of the iterable in the calculation, and serves as a default when the
-    iterable is empty.
+    Apply a function of two arguments cumulatively to the items of an iterable, from left to right.
+
+    This effectively reduces the iterable to a single value.  If initial is present,
+    it is placed before the items of the iterable in the calculation, and serves as
+    a default when the iterable is empty.
+
+    For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5])
+    calculates ((((1 + 2) + 3) + 4) + 5).
     """
 
     it = iter(sequence)
@@ -311,6 +313,16 @@ def __repr__(self):
         args.extend(f"{k}={v!r}" for (k, v) in self.keywords.items())
         return f"{module}.{qualname}({', '.join(args)})"
 
+    def __get__(self, obj, objtype=None):
+        if obj is None:
+            return self
+        import warnings
+        warnings.warn('functools.partial will be a method descriptor in '
+                      'future Python versions; wrap it in staticmethod() '
+                      'if you want to preserve the old behavior',
+                      FutureWarning, 2)
+        return self
+
     def __reduce__(self):
         return type(self), (self.func,), (self.func, self.args,
                self.keywords or None, self.__dict__ or None)
@@ -339,6 +351,9 @@ def __setstate__(self, state):
         self.args = args
         self.keywords = kwds
 
+    __class_getitem__ = classmethod(GenericAlias)
+
+
 try:
     from _functools import partial
 except ImportError:
@@ -373,15 +388,13 @@ def __init__(self, func, /, *args, **keywords):
             self.keywords = keywords
 
     def __repr__(self):
-        args = ", ".join(map(repr, self.args))
-        keywords = ", ".join("{}={!r}".format(k, v)
-                                 for k, v in self.keywords.items())
-        format_string = "{module}.{cls}({func}, {args}, {keywords})"
-        return format_string.format(module=self.__class__.__module__,
-                                    cls=self.__class__.__qualname__,
-                                    func=self.func,
-                                    args=args,
-                                    keywords=keywords)
+        cls = type(self)
+        module = cls.__module__
+        qualname = cls.__qualname__
+        args = [repr(self.func)]
+        args.extend(map(repr, self.args))
+        args.extend(f"{k}={v!r}" for k, v in self.keywords.items())
+        return f"{module}.{qualname}({', '.join(args)})"
 
     def _make_unbound_method(self):
         def _method(cls_or_self, /, *args, **keywords):
@@ -394,7 +407,7 @@ def _method(cls_or_self, /, *args, **keywords):
     def __get__(self, obj, cls=None):
         get = getattr(self.func, "__get__", None)
         result = None
-        if get is not None:
+        if get is not None and not isinstance(self.func, partial):
             new_func = get(obj, cls)
             if new_func is not self.func:
                 # Assume __get__ returning something new indicates the
diff --git a/Lib/glob.py b/Lib/glob.py
index 6088de00a67a99..c506e0e2157c51 100644
--- a/Lib/glob.py
+++ b/Lib/glob.py
@@ -523,43 +523,6 @@ def select_exists(self, path, exists=False):
             except OSError:
                 pass
 
-    @classmethod
-    def walk(cls, root, top_down, on_error, follow_symlinks):
-        """Walk the directory tree from the given root, similar to os.walk().
-        """
-        paths = [root]
-        while paths:
-            path = paths.pop()
-            if isinstance(path, tuple):
-                yield path
-                continue
-            try:
-                with cls.scandir(path) as scandir_it:
-                    dirnames = []
-                    filenames = []
-                    if not top_down:
-                        paths.append((path, dirnames, filenames))
-                    for entry in scandir_it:
-                        name = entry.name
-                        try:
-                            if entry.is_dir(follow_symlinks=follow_symlinks):
-                                if not top_down:
-                                    paths.append(cls.parse_entry(entry))
-                                dirnames.append(name)
-                            else:
-                                filenames.append(name)
-                        except OSError:
-                            filenames.append(name)
-            except OSError as error:
-                if on_error is not None:
-                    on_error(error)
-            else:
-                if top_down:
-                    yield path, dirnames, filenames
-                    if dirnames:
-                        prefix = cls.add_slash(path)
-                        paths += [cls.concat_path(prefix, d) for d in reversed(dirnames)]
-
 
 class _StringGlobber(_Globber):
     lstat = staticmethod(os.lstat)
diff --git a/Lib/gzip.py b/Lib/gzip.py
index 0d19c84c59cfa7..ba753ce3050dd8 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -580,27 +580,6 @@ def _rewind(self):
         self._new_member = True
 
 
-def _create_simple_gzip_header(compresslevel: int,
-                               mtime = None) -> bytes:
-    """
-    Write a simple gzip header with no extra fields.
-    :param compresslevel: Compresslevel used to determine the xfl bytes.
-    :param mtime: The mtime (must support conversion to a 32-bit integer).
-    :return: A bytes object representing the gzip header.
-    """
-    if mtime is None:
-        mtime = time.time()
-    if compresslevel == _COMPRESS_LEVEL_BEST:
-        xfl = 2
-    elif compresslevel == _COMPRESS_LEVEL_FAST:
-        xfl = 4
-    else:
-        xfl = 0
-    # Pack ID1 and ID2 magic bytes, method (8=deflate), header flags (no extra
-    # fields added to header), mtime, xfl and os (255 for unknown OS).
-    return struct.pack("<BBBBLBB", 0x1f, 0x8b, 8, 0, int(mtime), xfl, 255)
-
-
 def compress(data, compresslevel=_COMPRESS_LEVEL_BEST, *, mtime=None):
     """Compress data in one shot and return the compressed string.
 
@@ -608,15 +587,14 @@ def compress(data, compresslevel=_COMPRESS_LEVEL_BEST, *, mtime=None):
     mtime can be used to set the modification time. The modification time is
     set to the current time by default.
     """
-    if mtime == 0:
-        # Use zlib as it creates the header with 0 mtime by default.
-        # This is faster and with less overhead.
-        return zlib.compress(data, level=compresslevel, wbits=31)
-    header = _create_simple_gzip_header(compresslevel, mtime)
-    trailer = struct.pack("<LL", zlib.crc32(data), (len(data) & 0xffffffff))
-    # Wbits=-15 creates a raw deflate block.
-    return (header + zlib.compress(data, level=compresslevel, wbits=-15) +
-            trailer)
+    # Wbits=31 automatically includes a gzip header and trailer.
+    gzip_data = zlib.compress(data, level=compresslevel, wbits=31)
+    if mtime is None:
+        mtime = time.time()
+    # Reuse gzip header created by zlib, replace mtime and OS byte for
+    # consistency.
+    header = struct.pack("<4sLBB", gzip_data, int(mtime), gzip_data[8], 255)
+    return header + gzip_data[10:]
 
 
 def decompress(data):
diff --git a/Lib/http/__init__.py b/Lib/http/__init__.py
index d64741ec0dd29a..17a47b180e55c2 100644
--- a/Lib/http/__init__.py
+++ b/Lib/http/__init__.py
@@ -179,7 +179,7 @@ class HTTPMethod:
 
     Methods from the following RFCs are all observed:
 
-        * RFF 9110: HTTP Semantics, obsoletes 7231, which obsoleted 2616
+        * RFC 9110: HTTP Semantics, obsoletes 7231, which obsoleted 2616
         * RFC 5789: PATCH Method for HTTP
     """
     def __new__(cls, value, description):
diff --git a/Lib/http/client.py b/Lib/http/client.py
index a353716a8506e6..fb29923d94274c 100644
--- a/Lib/http/client.py
+++ b/Lib/http/client.py
@@ -472,7 +472,7 @@ def read(self, amt=None):
         if self.chunked:
             return self._read_chunked(amt)
 
-        if amt is not None:
+        if amt is not None and amt >= 0:
             if self.length is not None and amt > self.length:
                 # clip the read to the "end of response"
                 amt = self.length
@@ -590,6 +590,8 @@ def _get_chunk_left(self):
 
     def _read_chunked(self, amt=None):
         assert self.chunked != _UNKNOWN
+        if amt is not None and amt < 0:
+            amt = None
         value = []
         try:
             while (chunk_left := self._get_chunk_left()) is not None:
diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py
index 35ac2dc6ae280c..57791c6ab0886d 100644
--- a/Lib/http/cookies.py
+++ b/Lib/http/cookies.py
@@ -184,8 +184,13 @@ def _quote(str):
         return '"' + str.translate(_Translator) + '"'
 
 
-_OctalPatt = re.compile(r"\\[0-3][0-7][0-7]")
-_QuotePatt = re.compile(r"[\\].")
+_unquote_sub = re.compile(r'\\(?:([0-3][0-7][0-7])|(.))').sub
+
+def _unquote_replace(m):
+    if m[1]:
+        return chr(int(m[1], 8))
+    else:
+        return m[2]
 
 def _unquote(str):
     # If there aren't any doublequotes,
@@ -205,36 +210,13 @@ def _unquote(str):
     #    \012 --> \n
     #    \"   --> "
     #
-    i = 0
-    n = len(str)
-    res = []
-    while 0 <= i < n:
-        o_match = _OctalPatt.search(str, i)
-        q_match = _QuotePatt.search(str, i)
-        if not o_match and not q_match:              # Neither matched
-            res.append(str[i:])
-            break
-        # else:
-        j = k = -1
-        if o_match:
-            j = o_match.start(0)
-        if q_match:
-            k = q_match.start(0)
-        if q_match and (not o_match or k < j):     # QuotePatt matched
-            res.append(str[i:k])
-            res.append(str[k+1])
-            i = k + 2
-        else:                                      # OctalPatt matched
-            res.append(str[i:j])
-            res.append(chr(int(str[j+1:j+4], 8)))
-            i = j + 4
-    return _nulljoin(res)
+    return _unquote_sub(_unquote_replace, str)
 
 # The _getdate() routine is used to set the expiration time in the cookie's HTTP
 # header.  By default, _getdate() returns the current time in the appropriate
 # "expires" format for a Set-Cookie header.  The one optional argument is an
 # offset from now, in seconds.  For example, an offset of -3600 means "one hour
-# ago".  The offset may be a floating point number.
+# ago".  The offset may be a floating-point number.
 #
 
 _weekdayname = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
@@ -442,9 +424,11 @@ def OutputString(self, attrs=None):
     (                              # Optional group: there may not be a value.
     \s*=\s*                          # Equal Sign
     (?P<val>                         # Start of group 'val'
-    "(?:[^\\"]|\\.)*"                  # Any doublequoted string
+    "(?:[^\\"]|\\.)*"                  # Any double-quoted string
     |                                  # or
-    \w{3},\s[\w\d\s-]{9,11}\s[\d:]{8}\sGMT  # Special case for "expires" attr
+    # Special case for "expires" attr
+    (\w{3,6}day|\w{3}),\s              # Day of the week or abbreviated day
+    [\w\d\s-]{9,11}\s[\d:]{8}\sGMT     # Date and time in specific format
     |                                  # or
     [""" + _LegalValueChars + r"""]*      # Any word or empty string
     )                                # End of group 'val'
diff --git a/Lib/idlelib/HISTORY.txt b/Lib/idlelib/HISTORY.txt
index 731fabd185fbbf..a601b25b5f838f 100644
--- a/Lib/idlelib/HISTORY.txt
+++ b/Lib/idlelib/HISTORY.txt
@@ -277,7 +277,7 @@ Command to format a paragraph.
 Debug menu:
 
 JIT (Just-In-Time) stack viewer toggle -- if set, the stack viewer
-automaticall pops up when you get a traceback.
+automatically pops up when you get a traceback.
 
 Windows menu:
 
diff --git a/Lib/idlelib/Icons/README.txt b/Lib/idlelib/Icons/README.txt
index d91c4d5d8d8cfa..e245bc0b26e121 100644
--- a/Lib/idlelib/Icons/README.txt
+++ b/Lib/idlelib/Icons/README.txt
@@ -1,13 +1,51 @@
-The IDLE icons are from https://bugs.python.org/issue1490384
+IDLE-PYTHON LOGOS
 
-Created by Andrew Clover.
+These are sent to tk on Windows, *NIX, and non-Aqua macOS
+in pyshell following "# set application icon".
 
-The original sources are available from Andrew's website:
+
+2006?: Andrew Clover made variously sized python icons for win23.
 https://www.doxdesk.com/software/py/pyicons.html
 
-Various different formats and sizes are available at this GitHub Pull Request:
-https://github.com/python/cpython/pull/17473
+2006: 16, 32, and 48 bit .png versions were copied to CPython
+as Python application icons, maybe in PC/icons/py.ico.
+https://github.com/python/cpython/issues/43372
+
+2014: They were copied (perhaps a bit revised) to idlelib/Icons.
+https://github.com/python/cpython/issues/64605
+.gif versions were also added.
+
+2020: Add Clover's 256-bit image.
+https://github.com/python/cpython/issues/82620
+Other fixups were done.
+
+The idle.ico file used for Windows was created with ImageMagick:
+  $ convert idle_16.png idle_32.png idle_48.png idle_256.png idle.ico
+** This needs redoing whenever files are changed.
+?? Do Start, Desktop, and Taskbar use idlelib/Icons files?
+
+Issue added Windows Store PC/icons/idlex44.png and .../idlex150.png.
+https://github.com/python/cpython/pull/22817
+?? Should these be updated with major changes?
+
+2022: Optimize .png images in CPython repository with external program.
+https://github.com/python/cpython/pull/21348
+idle.ico (and idlex##) were not updated.
+
+The idlexx.gif files are only needed for *nix running tcl/tk 8.5.
+As of 2022, this was known true for 1 'major' Linux distribution.
+(Same would be true for any non-Aqua macOS with 8.5, but now none?)
+Can be deleted when we require 8.6 or it is known always used.
+
+Future: Derivatives of Python logo should be submitted for approval.
+PSF Trademark Working Group / Committee psf-trademarks@python.org
+https://www.python.org/community/logos/  # Original files
+https://www.python.org/psf/trademarks-faq/
+https://www.python.org/psf/trademarks/  # Usage.
+
+
+OTHER GIFS: These are used by browsers using idlelib.tree.
+At least some will not be used when tree is replaced by ttk.Treeview.
 
-The idle.ico file was created with ImageMagick:
 
-    $ convert idle_16.png idle_32.png idle_48.png idle_256.png idle.ico
+Edited 2024 August 26 by TJR.
diff --git a/Lib/idlelib/News3.txt b/Lib/idlelib/News3.txt
index fb07d7b3b3fad8..37ff93f9866e3c 100644
--- a/Lib/idlelib/News3.txt
+++ b/Lib/idlelib/News3.txt
@@ -4,6 +4,16 @@ Released on 2024-10-xx
 =========================
 
 
+gh-120083: Add explicit black IDLE Hovertip foreground color needed for
+recent macOS. Fixes Sonoma showing unreadable white on pale yellow.
+Patch by John Riggles.
+
+gh-122482: Change About IDLE to direct users to discuss.python.org
+instead of the now unused idle-dev email and mailing list.
+
+gh-78889: Stop Shell freezes by blocking user access to non-method
+sys.stdout.shell attributes, which are all private.
+
 gh-78955: Use user-selected color theme for Help => IDLE Doc.
 
 gh-96905: In idlelib code, stop redefining built-ins 'dict' and 'object'.
@@ -568,14 +578,14 @@ bpo-33679: Enable theme-specific color configuration for Code Context.
 color setting, default or custom, on the extensions tab, that applied
 to all themes.)  For built-in themes, the foreground is the same as
 normal text and the background is a contrasting gray.  Context colors for
-custom themes are set on the Hightlights tab along with other colors.
+custom themes are set on the Highlights tab along with other colors.
 When one starts IDLE from a console and loads a custom theme without
 definitions for 'context', one will see a warning message on the
 console.
 
 bpo-33642: Display up to maxlines non-blank lines for Code Context.
 If there is no current context, show a single blank line.  (Previously,
-the Code Contex had numlines lines, usually with some blank.)  The use
+the Code Context had numlines lines, usually with some blank.)  The use
 of a new option, 'maxlines' (default 15), avoids possible interference
 with user settings of the old option, 'numlines' (default 3).
 
@@ -729,7 +739,7 @@ not affect their keyset-specific customization after 3.6.3. and vice
 versa.
   Initial patch by Charles Wohlganger, revised by Terry Jan Reedy.
 
-bpo-31051:  Rearrange condigdialog General tab.
+bpo-31051:  Rearrange configdialog General tab.
 Sort non-Help options into Window (Shell+Editor) and Editor (only).
 Leave room for the addition of new options.
 Patch by Terry Jan Reedy.
diff --git a/Lib/idlelib/TODO.txt b/Lib/idlelib/TODO.txt
index e2f1ac0f274001..41b86b0c6d5bbd 100644
--- a/Lib/idlelib/TODO.txt
+++ b/Lib/idlelib/TODO.txt
@@ -179,7 +179,7 @@ it -- i.e. you can only edit the current command, and the cursor can't
 escape from the command area.  (Albert Brandl)
 
 - Set X11 class to "idle/Idle", set icon and title to something
-beginning with "idle" -- for window manangers.  (Randall Hopper)
+beginning with "idle" -- for window managers.  (Randall Hopper)
 
 - Config files editable through a preferences dialog.  (me) DONE
 
diff --git a/Lib/idlelib/config.py b/Lib/idlelib/config.py
index 92992fd9cce9cd..d10c88a43f9231 100644
--- a/Lib/idlelib/config.py
+++ b/Lib/idlelib/config.py
@@ -158,8 +158,9 @@ def __init__(self, _utest=False):
         self.defaultCfg = {}
         self.userCfg = {}
         self.cfg = {}  # TODO use to select userCfg vs defaultCfg
+
+        # See https://bugs.python.org/issue4630#msg356516 for following.
         # self.blink_off_time = <first editor text>['insertofftime']
-        # See https:/bugs.python.org/issue4630, msg356516.
 
         if not _utest:
             self.CreateConfigHandlers()
@@ -599,7 +600,7 @@ def GetCoreKeys(self, keySetName=None):
         """
         # TODO: = dict(sorted([(v-event, keys), ...]))?
         keyBindings={
-            # vitual-event: list of key events.
+            # virtual-event: list of key events.
             '<<copy>>': ['<Control-c>', '<Control-C>'],
             '<<cut>>': ['<Control-x>', '<Control-X>'],
             '<<paste>>': ['<Control-v>', '<Control-V>'],
diff --git a/Lib/idlelib/configdialog.py b/Lib/idlelib/configdialog.py
index eedf97bf74fe6a..4d2adb48570d49 100644
--- a/Lib/idlelib/configdialog.py
+++ b/Lib/idlelib/configdialog.py
@@ -111,7 +111,7 @@ def create_widgets(self):
             load_configs: Load pages except for extensions.
             activate_config_changes: Tell editors to reload.
         """
-        self.frame = frame = Frame(self, padding="5px")
+        self.frame = frame = Frame(self, padding=5)
         self.frame.grid(sticky="nwes")
         self.note = note = Notebook(frame)
         self.extpage = ExtPage(note)
diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py
index 7bfa0932500d81..c76db20c58792d 100644
--- a/Lib/idlelib/editor.py
+++ b/Lib/idlelib/editor.py
@@ -914,7 +914,7 @@ def RemoveKeybindings(self):
     def ApplyKeybindings(self):
         """Apply the virtual, configurable keybindings.
 
-        Alse update hotkeys to current keyset.
+        Also update hotkeys to current keyset.
         """
         # Called from configdialog.activate_config_changes.
         self.mainmenu.default_keydefs = keydefs = idleConf.GetCurrentKeySet()
diff --git a/Lib/idlelib/extend.txt b/Lib/idlelib/extend.txt
index b482f76c4fb0f7..2522758ceb4f70 100644
--- a/Lib/idlelib/extend.txt
+++ b/Lib/idlelib/extend.txt
@@ -52,7 +52,7 @@ should probably be refined in the future.)
 
 Extensions are not required to define menu entries for all the events they
 implement.  (They are also not required to create keybindings, but in that
-case there must be empty bindings in cofig-extensions.def)
+case there must be empty bindings in config-extensions.def)
 
 Here is a partial example from zzdummy.py:
 
diff --git a/Lib/idlelib/grep.py b/Lib/idlelib/grep.py
index ef14349960bfa2..42048ff2395fe1 100644
--- a/Lib/idlelib/grep.py
+++ b/Lib/idlelib/grep.py
@@ -190,7 +190,7 @@ def grep_it(self, prog, path):
 
 
 def _grep_dialog(parent):  # htest #
-    from tkinter import Toplevel, Text, SEL, END
+    from tkinter import Toplevel, Text, SEL
     from tkinter.ttk import Frame, Button
     from idlelib.pyshell import PyShellFileList
 
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index 827d230b54e159..2a4adc6a4d395f 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -5,7 +5,7 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
 
-    <title>IDLE &#8212; Python 3.13.0a2 documentation</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>IDLE &#8212; Python 3.14.0a0 documentation</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
 
     <link rel="stylesheet" type="text/css" href="../_static/pygments.css" />
     <link rel="stylesheet" type="text/css" href="../_static/pydoctheme.css?digest=b37c26da2f7529d09fe70b41c4b2133fe4931a90" />
@@ -18,7 +18,7 @@
     <script src="../_static/sidebar.js"></script>
 
     <link rel="search" type="application/opensearchdescription+xml"
-          title="Search within Python 3.13.0a2 documentation"
+          title="Search within Python 3.14.0a0 documentation"
           href="../_static/opensearch.xml"/>
     <link rel="author" title="About these documents" href="../about.html" />
     <link rel="index" title="Index" href="../genindex.html" />
@@ -26,6 +26,7 @@
     <link rel="copyright" title="Copyright" href="../copyright.html" />
     <link rel="next" title="Development Tools" href="development.html" />
     <link rel="prev" title="tkinter.ttk — Tk themed widgets" href="tkinter.ttk.html" />
+
     <link rel="canonical" href="https://docs.python.org/3/library/idle.html" />
 
 
@@ -45,6 +46,8 @@
             <script type="text/javascript" src="../_static/menu.js"></script>
             <script type="text/javascript" src="../_static/search-focus.js"></script>
             <script type="text/javascript" src="../_static/themetoggle.js"></script>
+            <script type="text/javascript" src="../_static/rtd_switcher.js"></script>
+            <meta name="readthedocs-addons-api-version" content="1">
 
   </head>
 <body>
@@ -184,7 +187,7 @@ <h3>Navigation</h3>
 
           </li>
     <li id="cpython-language-and-version">
-      <a href="../index.html">3.13.0a2 Documentation</a> &#187;
+      <a href="../index.html">3.14.0a0 Documentation</a> &#187;
     </li>
 
           <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> &#187;</li>
@@ -554,7 +557,7 @@ <h3>Key bindings<a class="headerlink" href="#key-bindings" title="Permalink to t
 delete characters.  Deletion does not puts text on the clipboard,
 but IDLE has an undo list.  Wherever this doc discusses keys,
 ‘C’ refers to the <kbd class="kbd docutils literal notranslate">Control</kbd> key on Windows and
-Unix and the <kbd class="kbd docutils literal notranslate">Command</kbd> key on macOS.  (And all such dicussions
+Unix and the <kbd class="kbd docutils literal notranslate">Command</kbd> key on macOS.  (And all such discussions
 assume that the keys have not been re-bound to something else.)</p>
 <ul class="simple">
 <li><p>Arrow keys move the cursor one character or line.</p></li>
@@ -562,8 +565,8 @@ <h3>Key bindings<a class="headerlink" href="#key-bindings" title="Permalink to t
 <li><p><kbd class="kbd docutils literal notranslate">Home</kbd> and <kbd class="kbd docutils literal notranslate">End</kbd> go to the beginning or end of the line.</p></li>
 <li><p><kbd class="kbd docutils literal notranslate">Page Up</kbd> and <kbd class="kbd docutils literal notranslate">Page Down</kbd> go up or down one screen.</p></li>
 <li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">Home</kbd></kbd> and <kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">End</kbd></kbd> go to beginning or end of the file.</p></li>
-<li><p><kbd class="kbd docutils literal notranslate">Backspace</kbd> and <kbd class="kbd docutils literal notranslate">Del</kbd> (or <cite>C-d</cite>) delete the previous or
-next character.</p></li>
+<li><p><kbd class="kbd docutils literal notranslate">Backspace</kbd> and <kbd class="kbd docutils literal notranslate">Del</kbd> (or <kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">d</kbd></kbd>) delete the previous
+or next character.</p></li>
 <li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">Backspace</kbd></kbd> and <kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">Del</kbd></kbd> delete one word left or right.</p></li>
 <li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">k</kbd></kbd> deletes (‘kills’) everything to the right.</p></li>
 </ul>
@@ -694,7 +697,7 @@ <h3>Shell window<a class="headerlink" href="#shell-window" title="Permalink to t
 <p>The editing features described in previous subsections work when entering
 code interactively.  IDLE’s Shell window also responds to the following:</p>
 <ul class="simple">
-<li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">c</kbd></kbd> attemps to interrupt statement execution (but may fail).</p></li>
+<li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">c</kbd></kbd> attempts to interrupt statement execution (but may fail).</p></li>
 <li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">d</kbd></kbd> closes Shell if typed at a <code class="docutils literal notranslate"><span class="pre">&gt;&gt;&gt;</span></code> prompt.</p></li>
 <li><p><kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">Alt</kbd>-<kbd class="kbd docutils literal notranslate">p</kbd></kbd> and <kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">Alt</kbd>-<kbd class="kbd docutils literal notranslate">n</kbd></kbd> (<kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">p</kbd></kbd> and <kbd class="kbd compound docutils literal notranslate"><kbd class="kbd docutils literal notranslate">C</kbd>-<kbd class="kbd docutils literal notranslate">n</kbd></kbd> on macOS)
 retrieve to the current prompt the previous or next previously
@@ -1136,7 +1139,7 @@ <h3>Navigation</h3>
 
           </li>
     <li id="cpython-language-and-version">
-      <a href="../index.html">3.13.0a2 Documentation</a> &#187;
+      <a href="../index.html">3.14.0a0 Documentation</a> &#187;
     </li>
 
           <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> &#187;</li>
@@ -1180,7 +1183,7 @@ <h3>Navigation</h3>
 <br />
     <br />
 
-    Last updated on Jan 17, 2024 (06:57 UTC).
+    Last updated on Oct 14, 2024 (20:27 UTC).
     <a href="/bugs.html">Found a bug</a>?
     <br />
 
diff --git a/Lib/idlelib/help_about.py b/Lib/idlelib/help_about.py
index aa1c352897f9e7..81c65f6264e7b9 100644
--- a/Lib/idlelib/help_about.py
+++ b/Lib/idlelib/help_about.py
@@ -85,15 +85,18 @@ def create_widgets(self):
         byline = Label(frame_background, text=byline_text, justify=LEFT,
                        fg=self.fg, bg=self.bg)
         byline.grid(row=2, column=0, sticky=W, columnspan=3, padx=10, pady=5)
-        email = Label(frame_background, text='email:  idle-dev@python.org',
-                      justify=LEFT, fg=self.fg, bg=self.bg)
-        email.grid(row=6, column=0, columnspan=2, sticky=W, padx=10, pady=0)
+
+        forums_url = "https://discuss.python.org"
+        forums = Label(frame_background, text="Python forums: "+forums_url,
+                        justify=LEFT, fg=self.fg, bg=self.bg)
+        forums.grid(row=6, column=0, sticky=W, padx=10, pady=0)
+        forums.bind("<Button-1>", lambda event: webbrowser.open(forums_url))
         docs_url = ("https://docs.python.org/%d.%d/library/idle.html" %
                     sys.version_info[:2])
         docs = Label(frame_background, text=docs_url,
                      justify=LEFT, fg=self.fg, bg=self.bg)
         docs.grid(row=7, column=0, columnspan=2, sticky=W, padx=10, pady=0)
-        docs.bind("<Button-1>", lambda event: webbrowser.open(docs['text']))
+        docs.bind("<Button-1>", lambda event: webbrowser.open(docs_url))
 
         Frame(frame_background, borderwidth=1, relief=SUNKEN,
               height=2, bg=self.bg).grid(row=8, column=0, sticky=EW,
@@ -123,9 +126,7 @@ def create_widgets(self):
               height=2, bg=self.bg).grid(row=11, column=0, sticky=EW,
                                          columnspan=3, padx=5, pady=5)
 
-        idle = Label(frame_background,
-                        text='IDLE',
-                        fg=self.fg, bg=self.bg)
+        idle = Label(frame_background, text='IDLE', fg=self.fg, bg=self.bg)
         idle.grid(row=12, column=0, sticky=W, padx=10, pady=0)
         idle_buttons = Frame(frame_background, bg=self.bg)
         idle_buttons.grid(row=13, column=0, columnspan=3, sticky=NSEW)
diff --git a/Lib/idlelib/idle_test/example_stub.pyi b/Lib/idlelib/idle_test/example_stub.pyi
index 17b58010a9d8de..abcdbc17529974 100644
--- a/Lib/idlelib/idle_test/example_stub.pyi
+++ b/Lib/idlelib/idle_test/example_stub.pyi
@@ -1,4 +1,4 @@
-" Example to test recognition of .pyi file as Python source code.
+# An example file to test recognition of a .pyi file as Python source code.
 
 class Example:
     def method(self, argument1: str, argument2: list[int]) -> None: ...
diff --git a/Lib/idlelib/idle_test/test_configdialog.py b/Lib/idlelib/idle_test/test_configdialog.py
index 5099d093382445..0daca89084b048 100644
--- a/Lib/idlelib/idle_test/test_configdialog.py
+++ b/Lib/idlelib/idle_test/test_configdialog.py
@@ -5,6 +5,7 @@
 from idlelib import configdialog
 from test.support import requires
 requires('gui')
+from test.support.testcase import ExtraAssertions
 import unittest
 from unittest import mock
 from idlelib.idle_test.mock_idle import Func
@@ -59,7 +60,7 @@ def activate_config_changes(self):
         pass
 
 
-class ButtonTest(unittest.TestCase):
+class ButtonTest(unittest.TestCase, ExtraAssertions):
 
     def test_click_ok(self):
         d = dialog
@@ -98,8 +99,8 @@ def test_click_help(self):
             dialog.buttons['Help'].invoke()
             title, contents = view.kwds['title'], view.kwds['contents']
         self.assertEqual(title, 'Help for IDLE preferences')
-        self.assertTrue(contents.startswith('When you click') and
-                        contents.endswith('a different name.\n'))
+        self.assertStartsWith(contents, 'When you click')
+        self.assertEndsWith(contents,'a different name.\n')
 
 
 class FontPageTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_debugger.py b/Lib/idlelib/idle_test/test_debugger.py
index d1c9638dd5d711..f4009258e0594c 100644
--- a/Lib/idlelib/idle_test/test_debugger.py
+++ b/Lib/idlelib/idle_test/test_debugger.py
@@ -9,6 +9,7 @@
 from tkinter import Tk
 
 from test.support import requires
+from test.support.testcase import ExtraAssertions
 import unittest
 from unittest import mock
 from unittest.mock import Mock, patch
@@ -227,7 +228,7 @@ def test_show_stack_with_frame(self):
         self.idb.get_stack.assert_called_once_with(test_frame, None)
 
 
-class StackViewerTest(unittest.TestCase):
+class StackViewerTest(unittest.TestCase, ExtraAssertions):
 
     @classmethod
     def setUpClass(cls):
@@ -256,7 +257,7 @@ def test_init(self):
         flist = None
         master_window = self.root
         sv = debugger.StackViewer(master_window, flist, gui)
-        self.assertTrue(hasattr(sv, 'stack'))
+        self.assertHasAttr(sv, 'stack')
 
     def test_load_stack(self):
         # Test the .load_stack() method against a fixed test stack.
diff --git a/Lib/idlelib/idle_test/test_grep.py b/Lib/idlelib/idle_test/test_grep.py
index a0b5b69171879c..ad0a813e71d7b8 100644
--- a/Lib/idlelib/idle_test/test_grep.py
+++ b/Lib/idlelib/idle_test/test_grep.py
@@ -8,6 +8,7 @@
 from idlelib import grep
 import unittest
 from test.support import captured_stdout
+from test.support.testcase import ExtraAssertions
 from idlelib.idle_test.mock_tk import Var
 import os
 import re
@@ -115,7 +116,7 @@ def test_recurse(self):
         self.assertIn(self.realpath, filelist)
 
 
-class Grep_itTest(unittest.TestCase):
+class Grep_itTest(unittest.TestCase, ExtraAssertions):
     # Test captured reports with 0 and some hits.
     # Should test file names, but Windows reports have mixed / and \ separators
     # from incomplete replacement, so 'later'.
@@ -143,7 +144,7 @@ def test_found(self):
         self.assertIn(pat, lines[0])
         self.assertIn('py: 1:', lines[1])  # line number 1
         self.assertIn('2', lines[3])  # hits found 2
-        self.assertTrue(lines[4].startswith('(Hint:'))
+        self.assertStartsWith(lines[4], '(Hint:')
 
 
 class Default_commandTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_multicall.py b/Lib/idlelib/idle_test/test_multicall.py
index b3a3bfb88f9c31..0c1fbfd648820f 100644
--- a/Lib/idlelib/idle_test/test_multicall.py
+++ b/Lib/idlelib/idle_test/test_multicall.py
@@ -3,10 +3,11 @@
 from idlelib import multicall
 import unittest
 from test.support import requires
+from test.support.testcase import ExtraAssertions
 from tkinter import Tk, Text
 
 
-class MultiCallTest(unittest.TestCase):
+class MultiCallTest(unittest.TestCase, ExtraAssertions):
 
     @classmethod
     def setUpClass(cls):
@@ -27,7 +28,7 @@ def tearDownClass(cls):
     def test_creator(self):
         mc = self.mc
         self.assertIs(multicall._multicall_dict[Text], mc)
-        self.assertTrue(issubclass(mc, Text))
+        self.assertIsSubclass(mc, Text)
         mc2 = multicall.MultiCallCreator(Text)
         self.assertIs(mc, mc2)
 
diff --git a/Lib/idlelib/idle_test/test_outwin.py b/Lib/idlelib/idle_test/test_outwin.py
index d6e85ad674417c..81f4aad7e95e95 100644
--- a/Lib/idlelib/idle_test/test_outwin.py
+++ b/Lib/idlelib/idle_test/test_outwin.py
@@ -1,6 +1,7 @@
 "Test outwin, coverage 76%."
 
 from idlelib import outwin
+import sys
 import unittest
 from test.support import requires
 from tkinter import Tk, Text
@@ -18,6 +19,10 @@ def setUpClass(cls):
         root.withdraw()
         w = cls.window = outwin.OutputWindow(None, None, None, root)
         cls.text = w.text = Text(root)
+        if sys.platform == 'darwin':  # Issue 112938
+            cls.text.update = cls.text.update_idletasks
+            # Without this, test write, writelines, and goto... fail.
+            # The reasons and why macOS-specific are unclear.
 
     @classmethod
     def tearDownClass(cls):
diff --git a/Lib/idlelib/idle_test/test_query.py b/Lib/idlelib/idle_test/test_query.py
index bb12b2b08652d5..ee368255f9b5c7 100644
--- a/Lib/idlelib/idle_test/test_query.py
+++ b/Lib/idlelib/idle_test/test_query.py
@@ -12,6 +12,7 @@
 from idlelib import query
 import unittest
 from test.support import requires
+from test.support.testcase import ExtraAssertions
 from tkinter import Tk, END
 
 import sys
@@ -105,7 +106,7 @@ def test_good_section_name(self):
         self.assertEqual(dialog.entry_error['text'], '')
 
 
-class ModuleNameTest(unittest.TestCase):
+class ModuleNameTest(unittest.TestCase, ExtraAssertions):
     "Test ModuleName subclass of Query."
 
     class Dummy_ModuleName:
@@ -134,10 +135,10 @@ def test_c_source_name(self):
 
     def test_good_module_name(self):
         dialog = self.Dummy_ModuleName('idlelib')
-        self.assertTrue(dialog.entry_ok().endswith('__init__.py'))
+        self.assertEndsWith(dialog.entry_ok(), '__init__.py')
         self.assertEqual(dialog.entry_error['text'], '')
         dialog = self.Dummy_ModuleName('idlelib.idle')
-        self.assertTrue(dialog.entry_ok().endswith('idle.py'))
+        self.assertEndsWith(dialog.entry_ok(), 'idle.py')
         self.assertEqual(dialog.entry_error['text'], '')
 
 
@@ -376,7 +377,7 @@ def test_click_section_name(self):
         root.destroy()
 
 
-class ModulenameGuiTest(unittest.TestCase):
+class ModulenameGuiTest(unittest.TestCase, ExtraAssertions):
 
     @classmethod
     def setUpClass(cls):
@@ -389,7 +390,7 @@ def test_click_module_name(self):
         self.assertEqual(dialog.text0, 'idlelib')
         self.assertEqual(dialog.entry.get(), 'idlelib')
         dialog.button_ok.invoke()
-        self.assertTrue(dialog.result.endswith('__init__.py'))
+        self.assertEndsWith(dialog.result, '__init__.py')
         root.destroy()
 
 
diff --git a/Lib/idlelib/idle_test/test_redirector.py b/Lib/idlelib/idle_test/test_redirector.py
index a97b3002afcf12..7bd1116debc238 100644
--- a/Lib/idlelib/idle_test/test_redirector.py
+++ b/Lib/idlelib/idle_test/test_redirector.py
@@ -3,11 +3,12 @@
 from idlelib.redirector import WidgetRedirector
 import unittest
 from test.support import requires
+from test.support.testcase import ExtraAssertions
 from tkinter import Tk, Text, TclError
 from idlelib.idle_test.mock_idle import Func
 
 
-class InitCloseTest(unittest.TestCase):
+class InitCloseTest(unittest.TestCase, ExtraAssertions):
 
     @classmethod
     def setUpClass(cls):
@@ -34,7 +35,7 @@ def test_close(self):
         redir.register('insert', Func)
         redir.close()
         self.assertEqual(redir._operations, {})
-        self.assertFalse(hasattr(self.text, 'widget'))
+        self.assertNotHasAttr(self.text, 'widget')
 
 
 class WidgetRedirectorTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_sidebar.py b/Lib/idlelib/idle_test/test_sidebar.py
index 605e7a892570d7..3e854561a0f5b9 100644
--- a/Lib/idlelib/idle_test/test_sidebar.py
+++ b/Lib/idlelib/idle_test/test_sidebar.py
@@ -5,8 +5,8 @@
 from itertools import chain
 import unittest
 import unittest.mock
-from test.support import requires, swap_attr
-from test import support
+from test.support import adjust_int_max_str_digits, requires, swap_attr
+from test.support.testcase import ExtraAssertions
 import tkinter as tk
 from idlelib.idle_test.tkinter_testing_utils import run_in_tk_mainloop
 
@@ -391,7 +391,7 @@ def assert_colors_are_equal(colors):
         assert_colors_are_equal(orig_colors)
 
 
-class ShellSidebarTest(unittest.TestCase):
+class ShellSidebarTest(unittest.TestCase, ExtraAssertions):
     root: tk.Tk = None
     shell: PyShell = None
 
@@ -613,7 +613,7 @@ def test_interrupt_recall_undo_redo(self):
 
     @run_in_tk_mainloop()
     def test_very_long_wrapped_line(self):
-        with support.adjust_int_max_str_digits(11_111), \
+        with adjust_int_max_str_digits(11_111), \
                 swap_attr(self.shell, 'squeezer', None):
             self.do_input('x = ' + '1'*10_000 + '\n')
             yield
@@ -725,7 +725,7 @@ def test_copy(self):
 
         text.tag_add('sel', f'{first_line}.0', 'end-1c')
         selected_text = text.get('sel.first', 'sel.last')
-        self.assertTrue(selected_text.startswith('if True:\n'))
+        self.assertStartsWith(selected_text, 'if True:\n')
         self.assertIn('\n1\n', selected_text)
 
         text.event_generate('<<copy>>')
@@ -749,7 +749,7 @@ def test_copy_with_prompts(self):
 
         text.tag_add('sel', f'{first_line}.3', 'end-1c')
         selected_text = text.get('sel.first', 'sel.last')
-        self.assertTrue(selected_text.startswith('True:\n'))
+        self.assertStartsWith(selected_text, 'True:\n')
 
         selected_lines_text = text.get('sel.first linestart', 'sel.last')
         selected_lines = selected_lines_text.split('\n')
diff --git a/Lib/idlelib/outwin.py b/Lib/idlelib/outwin.py
index 5ed3f35a7af655..8baa657550de94 100644
--- a/Lib/idlelib/outwin.py
+++ b/Lib/idlelib/outwin.py
@@ -112,7 +112,7 @@ def write(self, s, tags=(), mark="insert"):
         assert isinstance(s, str)
         self.text.insert(mark, s, tags)
         self.text.see(mark)
-        self.text.update_idletasks()
+        self.text.update()
         return len(s)
 
     def writelines(self, lines):
diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
index 1524fccd5d20f8..66fbbd4a97b7af 100755
--- a/Lib/idlelib/pyshell.py
+++ b/Lib/idlelib/pyshell.py
@@ -11,15 +11,9 @@
           "Your Python may not be configured for Tk. **", file=sys.__stderr__)
     raise SystemExit(1)
 
-# Valid arguments for the ...Awareness call below are defined in the following.
-# https://msdn.microsoft.com/en-us/library/windows/desktop/dn280512(v=vs.85).aspx
 if sys.platform == 'win32':
-    try:
-        import ctypes
-        PROCESS_SYSTEM_DPI_AWARE = 1  # Int required.
-        ctypes.OleDLL('shcore').SetProcessDpiAwareness(PROCESS_SYSTEM_DPI_AWARE)
-    except (ImportError, AttributeError, OSError):
-        pass
+    from idlelib.util import fix_win_hidpi
+    fix_win_hidpi()
 
 from tkinter import messagebox
 
@@ -430,7 +424,9 @@ def __init__(self, tkconsole):
     def spawn_subprocess(self):
         if self.subprocess_arglist is None:
             self.subprocess_arglist = self.build_subprocess_arglist()
-        self.rpcsubproc = subprocess.Popen(self.subprocess_arglist)
+        # gh-127060: Disable traceback colors
+        env = dict(os.environ, TERM='dumb')
+        self.rpcsubproc = subprocess.Popen(self.subprocess_arglist, env=env)
 
     def build_subprocess_arglist(self):
         assert (self.port!=0), (
@@ -712,7 +708,7 @@ def prepend_syspath(self, filename):
             del _filename, _sys, _dirname, _dir
             \n""".format(filename))
 
-    def showsyntaxerror(self, filename=None):
+    def showsyntaxerror(self, filename=None, **kwargs):
         """Override Interactive Interpreter method: Use Colorizing
 
         Color the offending position instead of printing it and pointing at it
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 53e80a9b42801f..a30db99a619a93 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -91,21 +91,28 @@ def capture_warnings(capture):
             _warnings_showwarning = None
 
 capture_warnings(True)
-tcl = tkinter.Tcl()
 
-def handle_tk_events(tcl=tcl):
-    """Process any tk events that are ready to be dispatched if tkinter
-    has been imported, a tcl interpreter has been created and tk has been
-    loaded."""
-    tcl.eval("update")
+if idlelib.testing:
+    # gh-121008: When testing IDLE, don't create a Tk object to avoid side
+    # effects such as installing a PyOS_InputHook hook.
+    def handle_tk_events():
+        pass
+else:
+    tcl = tkinter.Tcl()
+
+    def handle_tk_events(tcl=tcl):
+        """Process any tk events that are ready to be dispatched if tkinter
+        has been imported, a tcl interpreter has been created and tk has been
+        loaded."""
+        tcl.eval("update")
 
 # Thread shared globals: Establish a queue between a subthread (which handles
 # the socket) and the main thread (which runs user code), plus global
-# completion, exit and interruptable (the main thread) flags:
+# completion, exit and interruptible (the main thread) flags:
 
 exit_now = False
 quitting = False
-interruptable = False
+interruptible = False
 
 def main(del_exitfunc=False):
     """Start the Python execution server in a subprocess
@@ -436,6 +443,9 @@ class StdioFile(io.TextIOBase):
 
     def __init__(self, shell, tags, encoding='utf-8', errors='strict'):
         self.shell = shell
+        # GH-78889: accessing unpickleable attributes freezes Shell.
+        # IDLE only needs methods; allow 'width' for possible use.
+        self.shell._RPCProxy__attributes = {'width': 1}
         self.tags = tags
         self._encoding = encoding
         self._errors = errors
@@ -572,14 +582,14 @@ def __init__(self, rpchandler):
             self.locals = {}
 
     def runcode(self, code):
-        global interruptable
+        global interruptible
         try:
             self.user_exc_info = None
-            interruptable = True
+            interruptible = True
             try:
                 exec(code, self.locals)
             finally:
-                interruptable = False
+                interruptible = False
         except SystemExit as e:
             if e.args:  # SystemExit called with an argument.
                 ob = e.args[0]
@@ -605,7 +615,7 @@ def runcode(self, code):
             flush_stdout()
 
     def interrupt_the_server(self):
-        if interruptable:
+        if interruptible:
             thread.interrupt_main()
 
     def start_the_debugger(self, gui_adap_oid):
diff --git a/Lib/idlelib/searchbase.py b/Lib/idlelib/searchbase.py
index 64ed50c7364be3..c68a6ca339af04 100644
--- a/Lib/idlelib/searchbase.py
+++ b/Lib/idlelib/searchbase.py
@@ -86,7 +86,7 @@ def create_widgets(self):
         top.wm_iconname(self.icon)
         _setup_dialog(top)
         self.top = top
-        self.frame = Frame(top, padding="5px")
+        self.frame = Frame(top, padding=5)
         self.frame.grid(sticky="nwes")
         top.grid_columnconfigure(0, weight=100)
         top.grid_rowconfigure(0, weight=100)
diff --git a/Lib/idlelib/tooltip.py b/Lib/idlelib/tooltip.py
index 3983690dd41177..df5b1fe1dcfb08 100644
--- a/Lib/idlelib/tooltip.py
+++ b/Lib/idlelib/tooltip.py
@@ -144,7 +144,8 @@ def hidetip(self):
 
 class Hovertip(OnHoverTooltipBase):
     "A tooltip that pops up when a mouse hovers over an anchor widget."
-    def __init__(self, anchor_widget, text, hover_delay=1000):
+    def __init__(self, anchor_widget, text, hover_delay=1000,
+                 foreground="#000000", background="#ffffe0"):
         """Create a text tooltip with a mouse hover delay.
 
         anchor_widget: the widget next to which the tooltip will be shown
@@ -156,10 +157,13 @@ def __init__(self, anchor_widget, text, hover_delay=1000):
         """
         super().__init__(anchor_widget, hover_delay=hover_delay)
         self.text = text
+        self.foreground = foreground
+        self.background = background
 
     def showcontents(self):
         label = Label(self.tipwindow, text=self.text, justify=LEFT,
-                      background="#ffffe0", relief=SOLID, borderwidth=1)
+                       relief=SOLID,  borderwidth=1,
+                       foreground=self.foreground, background=self.background)
         label.pack()
 
 
diff --git a/Lib/idlelib/tree.py b/Lib/idlelib/tree.py
index 0726d7e23660f6..182ce7189614da 100644
--- a/Lib/idlelib/tree.py
+++ b/Lib/idlelib/tree.py
@@ -83,6 +83,8 @@ def wheel_event(event, widget=None):
 
 class TreeNode:
 
+    dy = 0
+
     def __init__(self, canvas, parent, item):
         self.canvas = canvas
         self.parent = parent
@@ -199,23 +201,22 @@ def update(self):
 
     def draw(self, x, y):
         # XXX This hard-codes too many geometry constants!
-        dy = 20
         self.x, self.y = x, y
         self.drawicon()
         self.drawtext()
         if self.state != 'expanded':
-            return y + dy
+            return y + TreeNode.dy
         # draw children
         if not self.children:
             sublist = self.item._GetSubList()
             if not sublist:
                 # _IsExpandable() was mistaken; that's allowed
-                return y+17
+                return y + TreeNode.dy
             for item in sublist:
                 child = self.__class__(self.canvas, self, item)
                 self.children.append(child)
         cx = x+20
-        cy = y + dy
+        cy = y + TreeNode.dy
         cylast = 0
         for child in self.children:
             cylast = cy
@@ -289,6 +290,11 @@ def drawtext(self):
             self.label.bind("<Button-4>", lambda e: wheel_event(e, self.canvas))
             self.label.bind("<Button-5>", lambda e: wheel_event(e, self.canvas))
         self.text_id = id
+        if TreeNode.dy == 0:
+            # The first row doesn't matter what the dy is, just measure its
+            # size to get the value of the subsequent dy
+            coords = self.canvas.bbox(id)
+            TreeNode.dy = max(20, coords[3] - coords[1] - 3)
 
     def select_or_edit(self, event=None):
         if self.selected and self.item.IsEditable():
diff --git a/Lib/idlelib/util.py b/Lib/idlelib/util.py
index a7ae74b0579004..e05604ab4853f6 100644
--- a/Lib/idlelib/util.py
+++ b/Lib/idlelib/util.py
@@ -12,11 +12,26 @@
     * std streams (pyshell, run),
     * warning stuff (pyshell, run).
 """
+import sys
 
 # .pyw is for Windows; .pyi is for typing stub files.
 # The extension order is needed for iomenu open/save dialogs.
 py_extensions = ('.py', '.pyw', '.pyi')
 
+
+# Fix for HiDPI screens on Windows.  CALL BEFORE ANY TK OPERATIONS!
+# URL for arguments for the ...Awareness call below.
+# https://msdn.microsoft.com/en-us/library/windows/desktop/dn280512(v=vs.85).aspx
+if sys.platform == 'win32':  # pragma: no cover
+    def fix_win_hidpi():  # Called in pyshell and turtledemo.
+        try:
+            import ctypes
+            PROCESS_SYSTEM_DPI_AWARE = 1  # Int required.
+            ctypes.OleDLL('shcore').SetProcessDpiAwareness(PROCESS_SYSTEM_DPI_AWARE)
+        except (ImportError, AttributeError, OSError):
+            pass
+
+
 if __name__ == '__main__':
     from unittest import main
     main('idlelib.idle_test.test_util', verbosity=2)
diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 577b4b9b03a88d..e337fe6471069f 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -52,6 +52,9 @@
 # search command can be quite large, so we now use 1M.
 _MAXLINE = 1000000
 
+# Data larger than this will be read in chunks, to prevent extreme
+# overallocation.
+_SAFE_BUF_SIZE = 1 << 20
 
 #       Commands
 
@@ -315,7 +318,13 @@ def open(self, host='', port=IMAP4_PORT, timeout=None):
 
     def read(self, size):
         """Read 'size' bytes from remote."""
-        return self.file.read(size)
+        cursize = min(size, _SAFE_BUF_SIZE)
+        data = self.file.read(cursize)
+        while cursize < size and len(data) == cursize:
+            delta = min(cursize, size - cursize)
+            data += self.file.read(delta)
+            cursize += delta
+        return data
 
 
     def readline(self):
diff --git a/Lib/importlib/__init__.py b/Lib/importlib/__init__.py
index f38fe5c1ab461a..a7d57561ead046 100644
--- a/Lib/importlib/__init__.py
+++ b/Lib/importlib/__init__.py
@@ -103,7 +103,7 @@ def reload(module):
         try:
             name = module.__name__
         except AttributeError:
-            raise TypeError("reload() argument must be a module")
+            raise TypeError("reload() argument must be a module") from None
 
     if sys.modules.get(name) is not module:
         raise ImportError(f"module {name} not in sys.modules", name=name)
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index db446776901fc3..eb8fea1aad0919 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -209,7 +209,11 @@ def _write_atomic(path, data, mode=0o666):
         # We first write data to a temporary file, and then use os.replace() to
         # perform an atomic rename.
         with _io.FileIO(fd, 'wb') as file:
-            file.write(data)
+            bytes_written = file.write(data)
+        if bytes_written != len(data):
+            # Raise an OSError so the 'except' below cleans up the partially
+            # written file.
+            raise OSError("os.write() didn't write the full pyc file")
         _os.replace(path_tmp, path)
     except OSError:
         try:
@@ -472,6 +476,7 @@ def _write_atomic(path, data, mode=0o666):
 #     Python 3.13a1 3568 (Change semantics of END_FOR)
 #     Python 3.13a5 3569 (Specialize CONTAINS_OP)
 #     Python 3.13a6 3570 (Add __firstlineno__ class attribute)
+#     Python 3.13b1 3571 (Fix miscompilation of private names in generic classes)
 
 #     Python 3.14 will start with 3600
 
@@ -488,7 +493,7 @@ def _write_atomic(path, data, mode=0o666):
 # Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
 # in PC/launcher.c must also be updated.
 
-MAGIC_NUMBER = (3570).to_bytes(2, 'little') + b'\r\n'
+MAGIC_NUMBER = (3571).to_bytes(2, 'little') + b'\r\n'
 
 _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little')  # For import.c
 
@@ -1792,14 +1797,14 @@ def _get_supported_file_loaders():
 
     Each item is a tuple (loader, suffixes).
     """
-    if sys.platform in {"ios", "tvos", "watchos"}:
-        extension_loaders = [(AppleFrameworkLoader, [
-            suffix.replace(".so", ".fwork")
-            for suffix in _imp.extension_suffixes()
-        ])]
-    else:
-        extension_loaders = []
-    extension_loaders.append((ExtensionFileLoader, _imp.extension_suffixes()))
+    extension_loaders = []
+    if hasattr(_imp, 'create_dynamic'):
+        if sys.platform in {"ios", "tvos", "watchos"}:
+            extension_loaders = [(AppleFrameworkLoader, [
+                suffix.replace(".so", ".fwork")
+                for suffix in _imp.extension_suffixes()
+            ])]
+        extension_loaders.append((ExtensionFileLoader, _imp.extension_suffixes()))
     source = SourceFileLoader, SOURCE_SUFFIXES
     bytecode = SourcelessFileLoader, BYTECODE_SUFFIXES
     return extension_loaders + [source, bytecode]
diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index 245f905737cb15..8ce62dd864fc27 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -567,7 +567,7 @@ def _read_files_egginfo_installed(self):
         paths = (
             (subdir / name)
             .resolve()
-            .relative_to(self.locate_file('').resolve())
+            .relative_to(self.locate_file('').resolve(), walk_up=True)
             .as_posix()
             for name in text.splitlines()
         )
diff --git a/Lib/importlib/resources/__init__.py b/Lib/importlib/resources/__init__.py
index ec4441c9116118..723c9f9eb33ce1 100644
--- a/Lib/importlib/resources/__init__.py
+++ b/Lib/importlib/resources/__init__.py
@@ -1,4 +1,11 @@
-"""Read resources contained within a package."""
+"""
+Read resources contained within a package.
+
+This codebase is shared between importlib.resources in the stdlib
+and importlib_resources in PyPI. See
+https://github.com/python/importlib_metadata/wiki/Development-Methodology
+for more detail.
+"""
 
 from ._common import (
     as_file,
diff --git a/Lib/importlib/resources/_common.py b/Lib/importlib/resources/_common.py
index e18082fb3d26a0..171a7f29249943 100644
--- a/Lib/importlib/resources/_common.py
+++ b/Lib/importlib/resources/_common.py
@@ -25,6 +25,8 @@ def package_to_anchor(func):
     >>> files('a', 'b')
     Traceback (most recent call last):
     TypeError: files() takes from 0 to 1 positional arguments but 2 were given
+
+    Remove this compatibility in Python 3.14.
     """
     undefined = object()
 
@@ -64,10 +66,10 @@ def get_resource_reader(package: types.ModuleType) -> Optional[ResourceReader]:
     # zipimport.zipimporter does not support weak references, resulting in a
     # TypeError.  That seems terrible.
     spec = package.__spec__
-    reader = getattr(spec.loader, 'get_resource_reader', None)  # type: ignore
+    reader = getattr(spec.loader, 'get_resource_reader', None)  # type: ignore[union-attr]
     if reader is None:
         return None
-    return reader(spec.name)  # type: ignore
+    return reader(spec.name)  # type: ignore[union-attr]
 
 
 @functools.singledispatch
diff --git a/Lib/importlib/resources/_functional.py b/Lib/importlib/resources/_functional.py
index 9e3ea1547d486a..f59416f2dd627d 100644
--- a/Lib/importlib/resources/_functional.py
+++ b/Lib/importlib/resources/_functional.py
@@ -57,11 +57,7 @@ def contents(anchor, *path_names):
         DeprecationWarning,
         stacklevel=1,
     )
-    return (
-        resource.name
-        for resource
-        in _get_resource(anchor, path_names).iterdir()
-    )
+    return (resource.name for resource in _get_resource(anchor, path_names).iterdir())
 
 
 def _get_encoding_arg(path_names, encoding):
diff --git a/Lib/importlib/resources/readers.py b/Lib/importlib/resources/readers.py
index c3cdf769cbecb0..70fc7e2b9c0145 100644
--- a/Lib/importlib/resources/readers.py
+++ b/Lib/importlib/resources/readers.py
@@ -1,8 +1,14 @@
+from __future__ import annotations
+
 import collections
+import contextlib
 import itertools
 import pathlib
 import operator
+import re
+import warnings
 import zipfile
+from collections.abc import Iterator
 
 from . import abc
 
@@ -31,8 +37,10 @@ def files(self):
 
 class ZipReader(abc.TraversableResources):
     def __init__(self, loader, module):
-        _, _, name = module.rpartition('.')
-        self.prefix = loader.prefix.replace('\\', '/') + name + '/'
+        self.prefix = loader.prefix.replace('\\', '/')
+        if loader.is_package(module):
+            _, _, name = module.rpartition('.')
+            self.prefix += name + '/'
         self.archive = loader.archive
 
     def open_resource(self, resource):
@@ -62,7 +70,7 @@ class MultiplexedPath(abc.Traversable):
     """
 
     def __init__(self, *paths):
-        self._paths = list(map(pathlib.Path, remove_duplicates(paths)))
+        self._paths = list(map(_ensure_traversable, remove_duplicates(paths)))
         if not self._paths:
             message = 'MultiplexedPath must contain at least one path'
             raise FileNotFoundError(message)
@@ -130,7 +138,40 @@ class NamespaceReader(abc.TraversableResources):
     def __init__(self, namespace_path):
         if 'NamespacePath' not in str(namespace_path):
             raise ValueError('Invalid path')
-        self.path = MultiplexedPath(*list(namespace_path))
+        self.path = MultiplexedPath(*filter(bool, map(self._resolve, namespace_path)))
+
+    @classmethod
+    def _resolve(cls, path_str) -> abc.Traversable | None:
+        r"""
+        Given an item from a namespace path, resolve it to a Traversable.
+
+        path_str might be a directory on the filesystem or a path to a
+        zipfile plus the path within the zipfile, e.g. ``/foo/bar`` or
+        ``/foo/baz.zip/inner_dir`` or ``foo\baz.zip\inner_dir\sub``.
+
+        path_str might also be a sentinel used by editable packages to
+        trigger other behaviors (see python/importlib_resources#311).
+        In that case, return None.
+        """
+        dirs = (cand for cand in cls._candidate_paths(path_str) if cand.is_dir())
+        return next(dirs, None)
+
+    @classmethod
+    def _candidate_paths(cls, path_str: str) -> Iterator[abc.Traversable]:
+        yield pathlib.Path(path_str)
+        yield from cls._resolve_zip_path(path_str)
+
+    @staticmethod
+    def _resolve_zip_path(path_str: str):
+        for match in reversed(list(re.finditer(r'[\\/]', path_str))):
+            with contextlib.suppress(
+                FileNotFoundError,
+                IsADirectoryError,
+                NotADirectoryError,
+                PermissionError,
+            ):
+                inner = path_str[match.end() :].replace('\\', '/') + '/'
+                yield zipfile.Path(path_str[: match.start()], inner.lstrip('/'))
 
     def resource_path(self, resource):
         """
@@ -142,3 +183,21 @@ def resource_path(self, resource):
 
     def files(self):
         return self.path
+
+
+def _ensure_traversable(path):
+    """
+    Convert deprecated string arguments to traversables (pathlib.Path).
+
+    Remove with Python 3.15.
+    """
+    if not isinstance(path, str):
+        return path
+
+    warnings.warn(
+        "String arguments are deprecated. Pass a Traversable instead.",
+        DeprecationWarning,
+        stacklevel=3,
+    )
+
+    return pathlib.Path(path)
diff --git a/Lib/importlib/resources/simple.py b/Lib/importlib/resources/simple.py
index 96f117fec62c10..2e75299b13aabf 100644
--- a/Lib/importlib/resources/simple.py
+++ b/Lib/importlib/resources/simple.py
@@ -77,7 +77,7 @@ class ResourceHandle(Traversable):
 
     def __init__(self, parent: ResourceContainer, name: str):
         self.parent = parent
-        self.name = name  # type: ignore
+        self.name = name  # type: ignore[misc]
 
     def is_file(self):
         return True
diff --git a/Lib/importlib/util.py b/Lib/importlib/util.py
index c94a148e4c50e0..284206b62f9409 100644
--- a/Lib/importlib/util.py
+++ b/Lib/importlib/util.py
@@ -13,7 +13,6 @@
 
 import _imp
 import sys
-import threading
 import types
 
 
@@ -257,6 +256,9 @@ def create_module(self, spec):
 
     def exec_module(self, module):
         """Make the module load lazily."""
+        # Threading is only needed for lazy loading, and importlib.util can
+        # be pulled in at interpreter startup, so defer until needed.
+        import threading
         module.__spec__.loader = self.loader
         module.__loader__ = self.loader
         # Don't need to worry about deep-copying as trying to set an attribute
diff --git a/Lib/inspect.py b/Lib/inspect.py
index 84260b251a4fb8..161928dfa9fb09 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -280,7 +280,13 @@ def get_annotations(obj, *, globals=None, locals=None, eval_str=False):
     if globals is None:
         globals = obj_globals
     if locals is None:
-        locals = obj_locals
+        locals = obj_locals or {}
+
+    # "Inject" type parameters into the local namespace
+    # (unless they are shadowed by assignments *in* the local namespace),
+    # as a way of emulating annotation scopes when calling `eval()`
+    if type_params := getattr(obj, "__type_params__", ()):
+        locals = {param.__name__: param for param in type_params} | locals
 
     return_value = {key:
         value if not isinstance(value, str) else eval(value, globals, locals)
@@ -307,9 +313,10 @@ def ismethoddescriptor(object):
     But not if ismethod() or isclass() or isfunction() are true.
 
     This is new in Python 2.2, and, for example, is true of int.__add__.
-    An object passing this test has a __get__ attribute but not a __set__
-    attribute, but beyond that the set of attributes varies.  __name__ is
-    usually sensible, and __doc__ often is.
+    An object passing this test has a __get__ attribute, but not a
+    __set__ attribute or a __delete__ attribute. Beyond that, the set
+    of attributes varies; __name__ is usually sensible, and __doc__
+    often is.
 
     Methods implemented via descriptors that also pass one of the other
     tests return false from the ismethoddescriptor() test, simply because
@@ -318,8 +325,15 @@ def ismethoddescriptor(object):
     if isclass(object) or ismethod(object) or isfunction(object):
         # mutual exclusion
         return False
+    if isinstance(object, functools.partial):
+        # Lie for children.  The addition of partial.__get__
+        # doesn't currently change the partial objects behaviour,
+        # not counting a warning about future changes.
+        return False
     tp = type(object)
-    return hasattr(tp, "__get__") and not hasattr(tp, "__set__")
+    return (hasattr(tp, "__get__")
+            and not hasattr(tp, "__set__")
+            and not hasattr(tp, "__delete__"))
 
 def isdatadescriptor(object):
     """Return true if the object is a data descriptor.
@@ -403,13 +417,13 @@ def isgeneratorfunction(obj):
     return _has_code_flag(obj, CO_GENERATOR)
 
 # A marker for markcoroutinefunction and iscoroutinefunction.
-_is_coroutine_marker = object()
+_is_coroutine_mark = object()
 
 def _has_coroutine_mark(f):
     while ismethod(f):
         f = f.__func__
     f = functools._unwrap_partial(f)
-    return getattr(f, "_is_coroutine_marker", None) is _is_coroutine_marker
+    return getattr(f, "_is_coroutine_marker", None) is _is_coroutine_mark
 
 def markcoroutinefunction(func):
     """
@@ -417,7 +431,7 @@ def markcoroutinefunction(func):
     """
     if hasattr(func, '__func__'):
         func = func.__func__
-    func._is_coroutine_marker = _is_coroutine_marker
+    func._is_coroutine_marker = _is_coroutine_mark
     return func
 
 def iscoroutinefunction(obj):
@@ -1068,10 +1082,12 @@ def findsource(object):
 
     if isclass(object):
         try:
-            firstlineno = object.__firstlineno__
-        except AttributeError:
+            lnum = vars(object)['__firstlineno__'] - 1
+        except (TypeError, KeyError):
             raise OSError('source code not available')
-        return lines, object.__firstlineno__ - 1
+        if lnum >= len(lines):
+            raise OSError('lineno is out of bounds')
+        return lines, lnum
 
     if ismethod(object):
         object = object.__func__
@@ -1593,11 +1609,15 @@ def getclosurevars(func):
     global_vars = {}
     builtin_vars = {}
     unbound_names = set()
-    for name in code.co_names:
-        if name in ("None", "True", "False"):
-            # Because these used to be builtins instead of keywords, they
-            # may still show up as name references. We ignore them.
-            continue
+    global_names = set()
+    for instruction in dis.get_instructions(code):
+        opname = instruction.opname
+        name = instruction.argval
+        if opname == "LOAD_ATTR":
+            unbound_names.add(name)
+        elif opname == "LOAD_GLOBAL":
+            global_names.add(name)
+    for name in global_names:
         try:
             global_vars[name] = global_ns[name]
         except KeyError:
@@ -2547,6 +2567,10 @@ def _signature_from_callable(obj, *,
                 new_params = (first_wrapped_param,) + sig_params
                 return sig.replace(parameters=new_params)
 
+    if isinstance(obj, functools.partial):
+        wrapped_sig = _get_signature_of(obj.func)
+        return _signature_get_partial(wrapped_sig, obj)
+
     if isfunction(obj) or _signature_is_functionlike(obj):
         # If it's a pure Python function, or an object that is duck type
         # of a Python function (Cython functions, for instance), then:
@@ -2558,10 +2582,6 @@ def _signature_from_callable(obj, *,
         return _signature_from_builtin(sigcls, obj,
                                        skip_bound_arg=skip_bound_arg)
 
-    if isinstance(obj, functools.partial):
-        wrapped_sig = _get_signature_of(obj.func)
-        return _signature_get_partial(wrapped_sig, obj)
-
     if isinstance(obj, type):
         # obj is a class or a metaclass
 
@@ -3106,6 +3126,8 @@ def _bind(self, args, kwargs, *, partial=False):
         parameters_ex = ()
         arg_vals = iter(args)
 
+        pos_only_param_in_kwargs = []
+
         while True:
             # Let's iterate through the positional arguments and corresponding
             # parameters
@@ -3126,10 +3148,10 @@ def _bind(self, args, kwargs, *, partial=False):
                         break
                     elif param.name in kwargs:
                         if param.kind == _POSITIONAL_ONLY:
-                            msg = '{arg!r} parameter is positional only, ' \
-                                  'but was passed as a keyword'
-                            msg = msg.format(arg=param.name)
-                            raise TypeError(msg) from None
+                            # Raise a TypeError once we are sure there is no
+                            # **kwargs param later.
+                            pos_only_param_in_kwargs.append(param)
+                            continue
                         parameters_ex = (param,)
                         break
                     elif (param.kind == _VAR_KEYWORD or
@@ -3211,20 +3233,22 @@ def _bind(self, args, kwargs, *, partial=False):
                                     format(arg=param_name)) from None
 
             else:
-                if param.kind == _POSITIONAL_ONLY:
-                    # This should never happen in case of a properly built
-                    # Signature object (but let's have this check here
-                    # to ensure correct behaviour just in case)
-                    raise TypeError('{arg!r} parameter is positional only, '
-                                    'but was passed as a keyword'. \
-                                    format(arg=param.name))
-
                 arguments[param_name] = arg_val
 
         if kwargs:
             if kwargs_param is not None:
                 # Process our '**kwargs'-like parameter
                 arguments[kwargs_param.name] = kwargs
+            elif pos_only_param_in_kwargs:
+                raise TypeError(
+                    'got some positional-only arguments passed as '
+                    'keyword arguments: {arg!r}'.format(
+                        arg=', '.join(
+                            param.name
+                            for param in pos_only_param_in_kwargs
+                        ),
+                    ),
+                )
             else:
                 raise TypeError(
                     'got an unexpected keyword argument {arg!r}'.format(
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 8e4d49c859534d..83e390c8c870d0 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -310,7 +310,7 @@ def collapse_addresses(addresses):
                            [IPv4Network('192.0.2.0/24')]
 
     Args:
-        addresses: An iterator of IPv4Network or IPv6Network objects.
+        addresses: An iterable of IPv4Network or IPv6Network objects.
 
     Returns:
         An iterator of the collapsed IPv(4|6)Network objects.
@@ -1970,12 +1970,21 @@ def __init__(self, address):
     def _explode_shorthand_ip_string(self):
         ipv4_mapped = self.ipv4_mapped
         if ipv4_mapped is None:
-            long_form = super()._explode_shorthand_ip_string()
-        else:
-            prefix_len = 30
-            raw_exploded_str = super()._explode_shorthand_ip_string()
-            long_form = "%s%s" % (raw_exploded_str[:prefix_len], str(ipv4_mapped))
-        return long_form
+            return super()._explode_shorthand_ip_string()
+        prefix_len = 30
+        raw_exploded_str = super()._explode_shorthand_ip_string()
+        return f"{raw_exploded_str[:prefix_len]}{ipv4_mapped!s}"
+
+    def _reverse_pointer(self):
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is None:
+            return super()._reverse_pointer()
+        prefix_len = 30
+        raw_exploded_str = super()._explode_shorthand_ip_string()[:prefix_len]
+        # ipv4 encoded using hexadecimal nibbles instead of decimals
+        ipv4_int = ipv4_mapped._ip
+        reverse_chars = f"{raw_exploded_str}{ipv4_int:008x}"[::-1].replace(':', '')
+        return '.'.join(reverse_chars) + '.ip6.arpa'
 
     def _ipv4_mapped_ipv6_to_str(self):
         """Return convenient text representation of IPv4-mapped IPv6 address
@@ -2043,6 +2052,9 @@ def is_multicast(self):
             See RFC 2373 2.7 for details.
 
         """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is not None:
+            return ipv4_mapped.is_multicast
         return self in self._constants._multicast_network
 
     @property
@@ -2054,6 +2066,9 @@ def is_reserved(self):
             reserved IPv6 Network ranges.
 
         """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is not None:
+            return ipv4_mapped.is_reserved
         return any(self in x for x in self._constants._reserved_networks)
 
     @property
@@ -2064,6 +2079,9 @@ def is_link_local(self):
             A boolean, True if the address is reserved per RFC 4291.
 
         """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is not None:
+            return ipv4_mapped.is_link_local
         return self in self._constants._linklocal_network
 
     @property
@@ -2120,6 +2138,9 @@ def is_global(self):
         ``is_global`` has value opposite to :attr:`is_private`, except for the ``100.64.0.0/10``
         IPv4 range where they are both ``False``.
         """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is not None:
+            return ipv4_mapped.is_global
         return not self.is_private
 
     @property
@@ -2131,6 +2152,9 @@ def is_unspecified(self):
             RFC 2373 2.5.2.
 
         """
+        ipv4_mapped = self.ipv4_mapped
+        if ipv4_mapped is not None:
+            return ipv4_mapped.is_unspecified
         return self._ip == 0
 
     @property
@@ -2374,6 +2398,8 @@ class _IPv6Constants:
         IPv6Network('2001:db8::/32'),
         # IANA says N/A, let's consider it not globally reachable to be safe
         IPv6Network('2002::/16'),
+        # RFC 9637: https://www.rfc-editor.org/rfc/rfc9637.html#section-6-2.2
+        IPv6Network('3fff::/20'),
         IPv6Network('fc00::/7'),
         IPv6Network('fe80::/10'),
         ]
diff --git a/Lib/json/decoder.py b/Lib/json/decoder.py
index d69a45d6793069..ff4bfcdcc407b9 100644
--- a/Lib/json/decoder.py
+++ b/Lib/json/decoder.py
@@ -50,17 +50,18 @@ def __reduce__(self):
 }
 
 
+HEXDIGITS = re.compile(r'[0-9A-Fa-f]{4}', FLAGS)
 STRINGCHUNK = re.compile(r'(.*?)(["\\\x00-\x1f])', FLAGS)
 BACKSLASH = {
     '"': '"', '\\': '\\', '/': '/',
     'b': '\b', 'f': '\f', 'n': '\n', 'r': '\r', 't': '\t',
 }
 
-def _decode_uXXXX(s, pos):
-    esc = s[pos + 1:pos + 5]
-    if len(esc) == 4 and esc[1] not in 'xX':
+def _decode_uXXXX(s, pos, _m=HEXDIGITS.match):
+    esc = _m(s, pos + 1)
+    if esc is not None:
         try:
-            return int(esc, 16)
+            return int(esc.group(), 16)
         except ValueError:
             pass
     msg = "Invalid \\uXXXX escape"
diff --git a/Lib/json/scanner.py b/Lib/json/scanner.py
index 7a61cfc2d24dce..090897515fe2f3 100644
--- a/Lib/json/scanner.py
+++ b/Lib/json/scanner.py
@@ -9,7 +9,7 @@
 __all__ = ['make_scanner']
 
 NUMBER_RE = re.compile(
-    r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
+    r'(-?(?:0|[1-9][0-9]*))(\.[0-9]+)?([eE][-+]?[0-9]+)?',
     (re.VERBOSE | re.MULTILINE | re.DOTALL))
 
 def py_make_scanner(context):
diff --git a/Lib/linecache.py b/Lib/linecache.py
index 3462f1c451ba29..8ba2df73d5a8fb 100644
--- a/Lib/linecache.py
+++ b/Lib/linecache.py
@@ -49,14 +49,17 @@ def checkcache(filename=None):
     (This is not checked upon each call!)"""
 
     if filename is None:
-        filenames = list(cache.keys())
-    elif filename in cache:
-        filenames = [filename]
+        # get keys atomically
+        filenames = cache.copy().keys()
     else:
-        return
+        filenames = [filename]
 
     for filename in filenames:
-        entry = cache[filename]
+        try:
+            entry = cache[filename]
+        except KeyError:
+            continue
+
         if len(entry) == 1:
             # lazy cache entry, leave it lazy.
             continue
@@ -70,7 +73,7 @@ def checkcache(filename=None):
             return
         try:
             stat = os.stat(fullname)
-        except OSError:
+        except (OSError, ValueError):
             cache.pop(filename, None)
             continue
         if size != stat.st_size or mtime != stat.st_mtime:
@@ -135,10 +138,12 @@ def updatecache(filename, module_globals=None):
             try:
                 stat = os.stat(fullname)
                 break
-            except OSError:
+            except (OSError, ValueError):
                 pass
         else:
             return []
+    except ValueError:  # may be raised by os.stat()
+        return []
     try:
         with tokenize.open(fullname) as fp:
             lines = fp.readlines()
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 174b37c0ab305b..aa9b79d8cab4bb 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -37,7 +37,7 @@
            'captureWarnings', 'critical', 'debug', 'disable', 'error',
            'exception', 'fatal', 'getLevelName', 'getLogger', 'getLoggerClass',
            'info', 'log', 'makeLogRecord', 'setLoggerClass', 'shutdown',
-           'warning', 'getLogRecordFactory', 'setLogRecordFactory',
+           'warn', 'warning', 'getLogRecordFactory', 'setLogRecordFactory',
            'lastResort', 'raiseExceptions', 'getLevelNamesMapping',
            'getHandlerByName', 'getHandlerNames']
 
@@ -340,11 +340,14 @@ def __init__(self, name, level, pathname, lineno,
         self.lineno = lineno
         self.funcName = func
         self.created = ct / 1e9  # ns to float seconds
-
         # Get the number of whole milliseconds (0-999) in the fractional part of seconds.
         # Eg: 1_677_903_920_999_998_503 ns --> 999_998_503 ns--> 999 ms
         # Convert to float by adding 0.0 for historical reasons. See gh-89047
         self.msecs = (ct % 1_000_000_000) // 1_000_000 + 0.0
+        if self.msecs == 999.0 and int(self.created) != ct // 1_000_000_000:
+            # ns -> sec conversion can round up, e.g:
+            # 1_677_903_920_999_999_900 ns --> 1_677_903_921.0 sec
+            self.msecs = 0.0
 
         self.relativeCreated = (ct - _startTime) / 1e6
         if logThreads:
@@ -1527,6 +1530,11 @@ def warning(self, msg, *args, **kwargs):
         if self.isEnabledFor(WARNING):
             self._log(WARNING, msg, args, **kwargs)
 
+    def warn(self, msg, *args, **kwargs):
+        warnings.warn("The 'warn' method is deprecated, "
+            "use 'warning' instead", DeprecationWarning, 2)
+        self.warning(msg, *args, **kwargs)
+
     def error(self, msg, *args, **kwargs):
         """
         Log 'msg % args' with severity 'ERROR'.
@@ -1903,6 +1911,11 @@ def warning(self, msg, *args, **kwargs):
         """
         self.log(WARNING, msg, *args, **kwargs)
 
+    def warn(self, msg, *args, **kwargs):
+        warnings.warn("The 'warn' method is deprecated, "
+            "use 'warning' instead", DeprecationWarning, 2)
+        self.warning(msg, *args, **kwargs)
+
     def error(self, msg, *args, **kwargs):
         """
         Delegate an error call to the underlying logger.
@@ -2166,6 +2179,11 @@ def warning(msg, *args, **kwargs):
         basicConfig()
     root.warning(msg, *args, **kwargs)
 
+def warn(msg, *args, **kwargs):
+    warnings.warn("The 'warn' function is deprecated, "
+        "use 'warning' instead", DeprecationWarning, 2)
+    warning(msg, *args, **kwargs)
+
 def info(msg, *args, **kwargs):
     """
     Log a message with severity 'INFO' on the root logger. If the logger has
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index 860e4751207470..190b4f922590ca 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -497,6 +497,33 @@ def as_tuple(self, value):
             value = tuple(value)
         return value
 
+def _is_queue_like_object(obj):
+    """Check that *obj* implements the Queue API."""
+    if isinstance(obj, (queue.Queue, queue.SimpleQueue)):
+        return True
+    # defer importing multiprocessing as much as possible
+    from multiprocessing.queues import Queue as MPQueue
+    if isinstance(obj, MPQueue):
+        return True
+    # Depending on the multiprocessing start context, we cannot create
+    # a multiprocessing.managers.BaseManager instance 'mm' to get the
+    # runtime type of mm.Queue() or mm.JoinableQueue() (see gh-119819).
+    #
+    # Since we only need an object implementing the Queue API, we only
+    # do a protocol check, but we do not use typing.runtime_checkable()
+    # and typing.Protocol to reduce import time (see gh-121723).
+    #
+    # Ideally, we would have wanted to simply use strict type checking
+    # instead of a protocol-based type checking since the latter does
+    # not check the method signatures.
+    #
+    # Note that only 'put_nowait' and 'get' are required by the logging
+    # queue handler and queue listener (see gh-124653) and that other
+    # methods are either optional or unused.
+    minimal_queue_interface = ['put_nowait', 'get']
+    return all(callable(getattr(obj, method, None))
+               for method in minimal_queue_interface)
+
 class DictConfigurator(BaseConfigurator):
     """
     Configure logging using a dictionary-like object to describe the
@@ -725,16 +752,16 @@ def add_filters(self, filterer, filters):
 
     def _configure_queue_handler(self, klass, **kwargs):
         if 'queue' in kwargs:
-            q = kwargs['queue']
+            q = kwargs.pop('queue')
         else:
             q = queue.Queue()  # unbounded
-        rhl = kwargs.get('respect_handler_level', False)
-        if 'listener' in kwargs:
-            lklass = kwargs['listener']
-        else:
-            lklass = logging.handlers.QueueListener
-        listener = lklass(q, *kwargs.get('handlers', []), respect_handler_level=rhl)
-        handler = klass(q)
+
+        rhl = kwargs.pop('respect_handler_level', False)
+        lklass = kwargs.pop('listener', logging.handlers.QueueListener)
+        handlers = kwargs.pop('handlers', [])
+
+        listener = lklass(q, *handlers, respect_handler_level=rhl)
+        handler = klass(q, **kwargs)
         handler.listener = listener
         return handler
 
@@ -780,21 +807,20 @@ def configure_handler(self, config):
                 # if 'handlers' not in config:
                     # raise ValueError('No handlers specified for a QueueHandler')
                 if 'queue' in config:
-                    from multiprocessing.queues import Queue as MPQueue
                     qspec = config['queue']
-                    if not isinstance(qspec, (queue.Queue, MPQueue)):
-                        if isinstance(qspec, str):
-                            q = self.resolve(qspec)
-                            if not callable(q):
-                                raise TypeError('Invalid queue specifier %r' % qspec)
-                            q = q()
-                        elif isinstance(qspec, dict):
-                            if '()' not in qspec:
-                                raise TypeError('Invalid queue specifier %r' % qspec)
-                            q = self.configure_custom(dict(qspec))
-                        else:
+
+                    if isinstance(qspec, str):
+                        q = self.resolve(qspec)
+                        if not callable(q):
                             raise TypeError('Invalid queue specifier %r' % qspec)
-                        config['queue'] = q
+                        config['queue'] = q()
+                    elif isinstance(qspec, dict):
+                        if '()' not in qspec:
+                            raise TypeError('Invalid queue specifier %r' % qspec)
+                        config['queue'] = self.configure_custom(dict(qspec))
+                    elif not _is_queue_like_object(qspec):
+                        raise TypeError('Invalid queue specifier %r' % qspec)
+
                 if 'listener' in config:
                     lspec = config['listener']
                     if isinstance(lspec, type):
diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py
index 410bd9851f366d..1cba64fd554100 100644
--- a/Lib/logging/handlers.py
+++ b/Lib/logging/handlers.py
@@ -193,15 +193,18 @@ def shouldRollover(self, record):
         Basically, see if the supplied record would cause the file to exceed
         the size limit we have.
         """
-        # See bpo-45401: Never rollover anything other than regular files
-        if os.path.exists(self.baseFilename) and not os.path.isfile(self.baseFilename):
-            return False
         if self.stream is None:                 # delay was set...
             self.stream = self._open()
         if self.maxBytes > 0:                   # are we rolling over?
+            pos = self.stream.tell()
+            if not pos:
+                # gh-116263: Never rollover an empty file
+                return False
             msg = "%s\n" % self.format(record)
-            self.stream.seek(0, 2)  #due to non-posix-compliant Windows feature
-            if self.stream.tell() + len(msg) >= self.maxBytes:
+            if pos + len(msg) >= self.maxBytes:
+                # See bpo-45401: Never rollover anything other than regular files
+                if os.path.exists(self.baseFilename) and not os.path.isfile(self.baseFilename):
+                    return False
                 return True
         return False
 
diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index b7e1e132172d02..8caddd204d7c98 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -846,7 +846,7 @@ def PipeClient(address):
 _LEGACY_LENGTHS = (_MD5ONLY_MESSAGE_LENGTH, _MD5_DIGEST_LEN)
 
 
-def _get_digest_name_and_payload(message: bytes) -> (str, bytes):
+def _get_digest_name_and_payload(message):  # type: (bytes) -> tuple[str, bytes]
     """Returns a digest name and the payload for a response hash.
 
     If a legacy protocol is detected based on the message length
@@ -956,7 +956,7 @@ def answer_challenge(connection, authkey: bytes):
                 f'Protocol error, expected challenge: {message=}')
     message = message[len(_CHALLENGE):]
     if len(message) < _MD5ONLY_MESSAGE_LENGTH:
-        raise AuthenticationError('challenge too short: {len(message)} bytes')
+        raise AuthenticationError(f'challenge too short: {len(message)} bytes')
     digest = _create_response(authkey, message)
     connection.send_bytes(digest)
     response = connection.recv_bytes(256)        # reject large message
diff --git a/Lib/multiprocessing/forkserver.py b/Lib/multiprocessing/forkserver.py
index 53b8c492675878..bff7fb91d974b3 100644
--- a/Lib/multiprocessing/forkserver.py
+++ b/Lib/multiprocessing/forkserver.py
@@ -168,6 +168,8 @@ def ensure_running(self):
 def main(listener_fd, alive_r, preload, main_path=None, sys_path=None):
     '''Run forkserver.'''
     if preload:
+        if sys_path is not None:
+            sys.path[:] = sys_path
         if '__main__' in preload and main_path is not None:
             process.current_process()._inheriting = True
             try:
diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index 76b915de74d94e..ef791c2751688a 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -758,22 +758,29 @@ class BaseProxy(object):
     _address_to_local = {}
     _mutex = util.ForkAwareThreadLock()
 
+    # Each instance gets a `_serial` number. Unlike `id(...)`, this number
+    # is never reused.
+    _next_serial = 1
+
     def __init__(self, token, serializer, manager=None,
                  authkey=None, exposed=None, incref=True, manager_owned=False):
         with BaseProxy._mutex:
-            tls_idset = BaseProxy._address_to_local.get(token.address, None)
-            if tls_idset is None:
-                tls_idset = util.ForkAwareLocal(), ProcessLocalSet()
-                BaseProxy._address_to_local[token.address] = tls_idset
+            tls_serials = BaseProxy._address_to_local.get(token.address, None)
+            if tls_serials is None:
+                tls_serials = util.ForkAwareLocal(), ProcessLocalSet()
+                BaseProxy._address_to_local[token.address] = tls_serials
+
+            self._serial = BaseProxy._next_serial
+            BaseProxy._next_serial += 1
 
         # self._tls is used to record the connection used by this
         # thread to communicate with the manager at token.address
-        self._tls = tls_idset[0]
+        self._tls = tls_serials[0]
 
-        # self._idset is used to record the identities of all shared
-        # objects for which the current process owns references and
+        # self._all_serials is a set used to record the identities of all
+        # shared objects for which the current process owns references and
         # which are in the manager at token.address
-        self._idset = tls_idset[1]
+        self._all_serials = tls_serials[1]
 
         self._token = token
         self._id = self._token.id
@@ -856,20 +863,20 @@ def _incref(self):
         dispatch(conn, None, 'incref', (self._id,))
         util.debug('INCREF %r', self._token.id)
 
-        self._idset.add(self._id)
+        self._all_serials.add(self._serial)
 
         state = self._manager and self._manager._state
 
         self._close = util.Finalize(
             self, BaseProxy._decref,
-            args=(self._token, self._authkey, state,
-                  self._tls, self._idset, self._Client),
+            args=(self._token, self._serial, self._authkey, state,
+                  self._tls, self._all_serials, self._Client),
             exitpriority=10
             )
 
     @staticmethod
-    def _decref(token, authkey, state, tls, idset, _Client):
-        idset.discard(token.id)
+    def _decref(token, serial, authkey, state, tls, idset, _Client):
+        idset.discard(serial)
 
         # check whether manager is still alive
         if state is None or state.value == State.STARTED:
diff --git a/Lib/multiprocessing/resource_tracker.py b/Lib/multiprocessing/resource_tracker.py
index 20ddd9c50e3d88..90e036ae905afa 100644
--- a/Lib/multiprocessing/resource_tracker.py
+++ b/Lib/multiprocessing/resource_tracker.py
@@ -155,13 +155,14 @@ def ensure_running(self):
                 # that can make the child die before it registers signal handlers
                 # for SIGINT and SIGTERM. The mask is unregistered after spawning
                 # the child.
+                prev_sigmask = None
                 try:
                     if _HAVE_SIGMASK:
-                        signal.pthread_sigmask(signal.SIG_BLOCK, _IGNORED_SIGNALS)
+                        prev_sigmask = signal.pthread_sigmask(signal.SIG_BLOCK, _IGNORED_SIGNALS)
                     pid = util.spawnv_passfds(exe, args, fds_to_pass)
                 finally:
-                    if _HAVE_SIGMASK:
-                        signal.pthread_sigmask(signal.SIG_UNBLOCK, _IGNORED_SIGNALS)
+                    if prev_sigmask is not None:
+                        signal.pthread_sigmask(signal.SIG_SETMASK, prev_sigmask)
             except:
                 os.close(w)
                 raise
diff --git a/Lib/multiprocessing/synchronize.py b/Lib/multiprocessing/synchronize.py
index 3ccbfe311c71f3..870c91349b9164 100644
--- a/Lib/multiprocessing/synchronize.py
+++ b/Lib/multiprocessing/synchronize.py
@@ -174,7 +174,7 @@ def __repr__(self):
                 name = process.current_process().name
                 if threading.current_thread().name != 'MainThread':
                     name += '|' + threading.current_thread().name
-            elif self._semlock._get_value() == 1:
+            elif not self._semlock._is_zero():
                 name = 'None'
             elif self._semlock._count() > 0:
                 name = 'SomeOtherThread'
@@ -200,7 +200,7 @@ def __repr__(self):
                 if threading.current_thread().name != 'MainThread':
                     name += '|' + threading.current_thread().name
                 count = self._semlock._count()
-            elif self._semlock._get_value() == 1:
+            elif not self._semlock._is_zero():
                 name, count = 'None', 0
             elif self._semlock._count() > 0:
                 name, count = 'SomeOtherThread', 'nonzero'
@@ -360,7 +360,7 @@ def wait(self, timeout=None):
                 return True
             return False
 
-    def __repr__(self) -> str:
+    def __repr__(self):
         set_status = 'set' if self.is_set() else 'unset'
         return f"<{type(self).__qualname__} at {id(self):#x} {set_status}>"
 #
diff --git a/Lib/ntpath.py b/Lib/ntpath.py
index b833e0bad2645f..5481bb8888ef59 100644
--- a/Lib/ntpath.py
+++ b/Lib/ntpath.py
@@ -19,7 +19,6 @@
 
 import os
 import sys
-import stat
 import genericpath
 from genericpath import *
 
@@ -168,19 +167,12 @@ def splitdrive(p):
 
 
 try:
-    from nt import _path_splitroot_ex
+    from nt import _path_splitroot_ex as splitroot
 except ImportError:
     def splitroot(p):
-        """Split a pathname into drive, root and tail. The drive is defined
-        exactly as in splitdrive(). On Windows, the root may be a single path
-        separator or an empty string. The tail contains anything after the root.
-        For example:
-
-            splitroot('//server/share/') == ('//server/share', '/', '')
-            splitroot('C:/Users/Barney') == ('C:', '/', 'Users/Barney')
-            splitroot('C:///spam///ham') == ('C:', '/', '//spam///ham')
-            splitroot('Windows/notepad') == ('', '', 'Windows/notepad')
-        """
+        """Split a pathname into drive, root and tail.
+
+        The tail contains anything after the root."""
         p = os.fspath(p)
         if isinstance(p, bytes):
             sep = b'\\'
@@ -220,23 +212,6 @@ def splitroot(p):
         else:
             # Relative path, e.g. Windows
             return empty, empty, p
-else:
-    def splitroot(p):
-        """Split a pathname into drive, root and tail. The drive is defined
-        exactly as in splitdrive(). On Windows, the root may be a single path
-        separator or an empty string. The tail contains anything after the root.
-        For example:
-
-            splitroot('//server/share/') == ('//server/share', '/', '')
-            splitroot('C:/Users/Barney') == ('C:', '/', 'Users/Barney')
-            splitroot('C:///spam///ham') == ('C:', '/', '//spam///ham')
-            splitroot('Windows/notepad') == ('', '', 'Windows/notepad')
-        """
-        p = os.fspath(p)
-        if isinstance(p, bytes):
-            drive, root, tail = _path_splitroot_ex(os.fsdecode(p))
-            return os.fsencode(drive), os.fsencode(root), os.fsencode(tail)
-        return _path_splitroot_ex(p)
 
 
 # Split a path in head (everything up to the last '/') and tail (the
@@ -288,21 +263,6 @@ def dirname(p):
     return split(p)[0]
 
 
-# Is a path a junction?
-
-if hasattr(os.stat_result, 'st_reparse_tag'):
-    def isjunction(path):
-        """Test whether a path is a junction"""
-        try:
-            st = os.lstat(path)
-        except (OSError, ValueError, AttributeError):
-            return False
-        return st.st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT
-else:
-    # Use genericpath.isjunction as imported above
-    pass
-
-
 # Is a path a mount point?
 # Any drive letter root (eg c:\)
 # Any share UNC (eg \\server\share)
@@ -553,7 +513,7 @@ def expandvars(path):
 # Previously, this function also truncated pathnames to 8+3 format,
 # but as this module is called "ntpath", that's obviously wrong!
 try:
-    from nt import _path_normpath
+    from nt import _path_normpath as normpath
 
 except ImportError:
     def normpath(path):
@@ -592,37 +552,22 @@ def normpath(path):
             comps.append(curdir)
         return prefix + sep.join(comps)
 
-else:
-    def normpath(path):
-        """Normalize path, eliminating double slashes, etc."""
-        path = os.fspath(path)
-        if isinstance(path, bytes):
-            return os.fsencode(_path_normpath(os.fsdecode(path))) or b"."
-        return _path_normpath(path) or "."
-
-
-def _abspath_fallback(path):
-    """Return the absolute version of a path as a fallback function in case
-    `nt._getfullpathname` is not available or raises OSError. See bpo-31047 for
-    more.
-
-    """
-
-    path = os.fspath(path)
-    if not isabs(path):
-        if isinstance(path, bytes):
-            cwd = os.getcwdb()
-        else:
-            cwd = os.getcwd()
-        path = join(cwd, path)
-    return normpath(path)
 
 # Return an absolute path.
 try:
     from nt import _getfullpathname
 
 except ImportError: # not running on Windows - mock up something sensible
-    abspath = _abspath_fallback
+    def abspath(path):
+        """Return the absolute version of a path."""
+        path = os.fspath(path)
+        if not isabs(path):
+            if isinstance(path, bytes):
+                cwd = os.getcwdb()
+            else:
+                cwd = os.getcwd()
+            path = join(cwd, path)
+        return normpath(path)
 
 else:  # use native Windows method on Windows
     def abspath(path):
@@ -630,7 +575,27 @@ def abspath(path):
         try:
             return _getfullpathname(normpath(path))
         except (OSError, ValueError):
-            return _abspath_fallback(path)
+            # See gh-75230, handle outside for cleaner traceback
+            pass
+        path = os.fspath(path)
+        if not isabs(path):
+            if isinstance(path, bytes):
+                sep = b'\\'
+                getcwd = os.getcwdb
+            else:
+                sep = '\\'
+                getcwd = os.getcwd
+            drive, root, path = splitroot(path)
+            # Either drive or root can be nonempty, but not both.
+            if drive or root:
+                try:
+                    path = join(_getfullpathname(drive + root), path)
+                except (OSError, ValueError):
+                    # Drive "\0:" cannot exist; use the root directory.
+                    path = drive + sep + path
+            else:
+                path = join(getcwd(), path)
+        return normpath(path)
 
 try:
     from nt import _findfirstfile, _getfinalpathname, readlink as _nt_readlink
@@ -911,13 +876,15 @@ def commonpath(paths):
 
 
 try:
-    # The isdir(), isfile(), islink() and exists() implementations in
-    # genericpath use os.stat(). This is overkill on Windows. Use simpler
+    # The isdir(), isfile(), islink(), exists() and lexists() implementations
+    # in genericpath use os.stat(). This is overkill on Windows. Use simpler
     # builtin functions if they are available.
     from nt import _path_isdir as isdir
     from nt import _path_isfile as isfile
     from nt import _path_islink as islink
+    from nt import _path_isjunction as isjunction
     from nt import _path_exists as exists
+    from nt import _path_lexists as lexists
 except ImportError:
     # Use genericpath.* as imported above
     pass
diff --git a/Lib/nturl2path.py b/Lib/nturl2path.py
index 61852aff58912d..757fd01bec8223 100644
--- a/Lib/nturl2path.py
+++ b/Lib/nturl2path.py
@@ -15,32 +15,29 @@ def url2pathname(url):
     # become
     #   C:\foo\bar\spam.foo
     import string, urllib.parse
+    if url[:3] == '///':
+        # URL has an empty authority section, so the path begins on the third
+        # character.
+        url = url[2:]
+    elif url[:12] == '//localhost/':
+        # Skip past 'localhost' authority.
+        url = url[11:]
+    if url[:3] == '///':
+        # Skip past extra slash before UNC drive in URL path.
+        url = url[1:]
     # Windows itself uses ":" even in URLs.
     url = url.replace(':', '|')
     if not '|' in url:
         # No drive specifier, just convert slashes
-        if url[:4] == '////':
-            # path is something like ////host/path/on/remote/host
-            # convert this to \\host\path\on\remote\host
-            # (notice halving of slashes at the start of the path)
-            url = url[2:]
-        components = url.split('/')
         # make sure not to convert quoted slashes :-)
-        return urllib.parse.unquote('\\'.join(components))
+        return urllib.parse.unquote(url.replace('/', '\\'))
     comp = url.split('|')
     if len(comp) != 2 or comp[0][-1] not in string.ascii_letters:
         error = 'Bad URL: ' + url
         raise OSError(error)
     drive = comp[0][-1].upper()
-    components = comp[1].split('/')
-    path = drive + ':'
-    for comp in components:
-        if comp:
-            path = path + '\\' + urllib.parse.unquote(comp)
-    # Issue #11474 - handing url such as |c/|
-    if path.endswith(':') and url.endswith('/'):
-        path += '\\'
-    return path
+    tail = urllib.parse.unquote(comp[1].replace('/', '\\'))
+    return drive + ':' + tail
 
 def pathname2url(p):
     """OS-specific conversion from a file system path to a relative URL
@@ -52,30 +49,21 @@ def pathname2url(p):
     import urllib.parse
     # First, clean up some special forms. We are going to sacrifice
     # the additional information anyway
-    if p[:4] == '\\\\?\\':
+    p = p.replace('\\', '/')
+    if p[:4] == '//?/':
         p = p[4:]
-        if p[:4].upper() == 'UNC\\':
-            p = '\\' + p[4:]
+        if p[:4].upper() == 'UNC/':
+            p = '//' + p[4:]
         elif p[1:2] != ':':
             raise OSError('Bad path: ' + p)
     if not ':' in p:
-        # No drive specifier, just convert slashes and quote the name
-        if p[:2] == '\\\\':
-        # path is something like \\host\path\on\remote\host
-        # convert this to ////host/path/on/remote/host
-        # (notice doubling of slashes at the start of the path)
-            p = '\\\\' + p
-        components = p.split('\\')
-        return urllib.parse.quote('/'.join(components))
+        # No DOS drive specified, just quote the pathname
+        return urllib.parse.quote(p)
     comp = p.split(':', maxsplit=2)
     if len(comp) != 2 or len(comp[0]) > 1:
         error = 'Bad path: ' + p
         raise OSError(error)
 
     drive = urllib.parse.quote(comp[0].upper())
-    components = comp[1].split('\\')
-    path = '///' + drive + ':'
-    for comp in components:
-        if comp:
-            path = path + '/' + urllib.parse.quote(comp)
-    return path
+    tail = urllib.parse.quote(comp[1])
+    return '///' + drive + ':' + tail
diff --git a/Lib/os.py b/Lib/os.py
index 7661ce68ca3be2..0408e2db79e66e 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -281,6 +281,10 @@ def renames(old, new):
 
 __all__.extend(["makedirs", "removedirs", "renames"])
 
+# Private sentinel that makes walk() classify all symlinks and junctions as
+# regular files.
+_walk_symlinks_as_files = object()
+
 def walk(top, topdown=True, onerror=None, followlinks=False):
     """Directory tree generator.
 
@@ -382,7 +386,10 @@ def walk(top, topdown=True, onerror=None, followlinks=False):
                     break
 
                 try:
-                    is_dir = entry.is_dir()
+                    if followlinks is _walk_symlinks_as_files:
+                        is_dir = entry.is_dir(follow_symlinks=False) and not entry.is_junction()
+                    else:
+                        is_dir = entry.is_dir()
                 except OSError:
                     # If is_dir() raises an OSError, consider the entry not to
                     # be a directory, same behaviour as os.path.isdir().
@@ -471,24 +478,59 @@ def fwalk(top=".", topdown=True, onerror=None, *, follow_symlinks=False, dir_fd=
         """
         sys.audit("os.fwalk", top, topdown, onerror, follow_symlinks, dir_fd)
         top = fspath(top)
-        # Note: To guard against symlink races, we use the standard
-        # lstat()/open()/fstat() trick.
-        if not follow_symlinks:
-            orig_st = stat(top, follow_symlinks=False, dir_fd=dir_fd)
-        topfd = open(top, O_RDONLY | O_NONBLOCK, dir_fd=dir_fd)
+        stack = [(_fwalk_walk, (True, dir_fd, top, top, None))]
+        isbytes = isinstance(top, bytes)
         try:
-            if (follow_symlinks or (st.S_ISDIR(orig_st.st_mode) and
-                                    path.samestat(orig_st, stat(topfd)))):
-                yield from _fwalk(topfd, top, isinstance(top, bytes),
-                                  topdown, onerror, follow_symlinks)
+            while stack:
+                yield from _fwalk(stack, isbytes, topdown, onerror, follow_symlinks)
         finally:
-            close(topfd)
-
-    def _fwalk(topfd, toppath, isbytes, topdown, onerror, follow_symlinks):
+            # Close any file descriptors still on the stack.
+            while stack:
+                action, value = stack.pop()
+                if action == _fwalk_close:
+                    close(value)
+
+    # Each item in the _fwalk() stack is a pair (action, args).
+    _fwalk_walk = 0  # args: (isroot, dirfd, toppath, topname, entry)
+    _fwalk_yield = 1  # args: (toppath, dirnames, filenames, topfd)
+    _fwalk_close = 2  # args: dirfd
+
+    def _fwalk(stack, isbytes, topdown, onerror, follow_symlinks):
         # Note: This uses O(depth of the directory tree) file descriptors: if
         # necessary, it can be adapted to only require O(1) FDs, see issue
         # #13734.
 
+        action, value = stack.pop()
+        if action == _fwalk_close:
+            close(value)
+            return
+        elif action == _fwalk_yield:
+            yield value
+            return
+        assert action == _fwalk_walk
+        isroot, dirfd, toppath, topname, entry = value
+        try:
+            if not follow_symlinks:
+                # Note: To guard against symlink races, we use the standard
+                # lstat()/open()/fstat() trick.
+                if entry is None:
+                    orig_st = stat(topname, follow_symlinks=False, dir_fd=dirfd)
+                else:
+                    orig_st = entry.stat(follow_symlinks=False)
+            topfd = open(topname, O_RDONLY | O_NONBLOCK, dir_fd=dirfd)
+        except OSError as err:
+            if isroot:
+                raise
+            if onerror is not None:
+                onerror(err)
+            return
+        stack.append((_fwalk_close, topfd))
+        if not follow_symlinks:
+            if isroot and not st.S_ISDIR(orig_st.st_mode):
+                return
+            if not path.samestat(orig_st, stat(topfd)):
+                return
+
         scandir_it = scandir(topfd)
         dirs = []
         nondirs = []
@@ -514,31 +556,18 @@ def _fwalk(topfd, toppath, isbytes, topdown, onerror, follow_symlinks):
 
         if topdown:
             yield toppath, dirs, nondirs, topfd
+        else:
+            stack.append((_fwalk_yield, (toppath, dirs, nondirs, topfd)))
 
-        for name in dirs if entries is None else zip(dirs, entries):
-            try:
-                if not follow_symlinks:
-                    if topdown:
-                        orig_st = stat(name, dir_fd=topfd, follow_symlinks=False)
-                    else:
-                        assert entries is not None
-                        name, entry = name
-                        orig_st = entry.stat(follow_symlinks=False)
-                dirfd = open(name, O_RDONLY | O_NONBLOCK, dir_fd=topfd)
-            except OSError as err:
-                if onerror is not None:
-                    onerror(err)
-                continue
-            try:
-                if follow_symlinks or path.samestat(orig_st, stat(dirfd)):
-                    dirpath = path.join(toppath, name)
-                    yield from _fwalk(dirfd, dirpath, isbytes,
-                                      topdown, onerror, follow_symlinks)
-            finally:
-                close(dirfd)
-
-        if not topdown:
-            yield toppath, dirs, nondirs, topfd
+        toppath = path.join(toppath, toppath[:0])  # Add trailing slash.
+        if entries is None:
+            stack.extend(
+                (_fwalk_walk, (False, topfd, toppath + name, name, None))
+                for name in dirs[::-1])
+        else:
+            stack.extend(
+                (_fwalk_walk, (False, topfd, toppath + name, name, entry))
+                for name, entry in zip(dirs[::-1], entries[::-1]))
 
     __all__.append("fwalk")
 
diff --git a/Lib/pathlib/_abc.py b/Lib/pathlib/_abc.py
index 06c10e8e4612ca..4d24146aa53f3b 100644
--- a/Lib/pathlib/_abc.py
+++ b/Lib/pathlib/_abc.py
@@ -225,15 +225,13 @@ def with_suffix(self, suffix):
         string, remove the suffix from the path.
         """
         stem = self.stem
-        if not suffix:
-            return self.with_name(stem)
-        elif not stem:
+        if not stem:
             # If the stem is empty, we can't make the suffix non-empty.
             raise ValueError(f"{self!r} has an empty name")
-        elif suffix.startswith('.') and len(suffix) > 1:
-            return self.with_name(stem + suffix)
-        else:
+        elif suffix and not (suffix.startswith('.') and len(suffix) > 1):
             raise ValueError(f"Invalid suffix {suffix!r}")
+        else:
+            return self.with_name(stem + suffix)
 
     def relative_to(self, other, *, walk_up=False):
         """Return the relative path to another path identified by the passed
@@ -698,7 +696,37 @@ def rglob(self, pattern, *, case_sensitive=None, recurse_symlinks=True):
 
     def walk(self, top_down=True, on_error=None, follow_symlinks=False):
         """Walk the directory tree from this directory, similar to os.walk()."""
-        return self._globber.walk(self, top_down, on_error, follow_symlinks)
+        paths = [self]
+        while paths:
+            path = paths.pop()
+            if isinstance(path, tuple):
+                yield path
+                continue
+            dirnames = []
+            filenames = []
+            if not top_down:
+                paths.append((path, dirnames, filenames))
+            try:
+                for child in path.iterdir():
+                    try:
+                        if child.is_dir(follow_symlinks=follow_symlinks):
+                            if not top_down:
+                                paths.append(child)
+                            dirnames.append(child.name)
+                        else:
+                            filenames.append(child.name)
+                    except OSError:
+                        filenames.append(child.name)
+            except OSError as error:
+                if on_error is not None:
+                    on_error(error)
+                if not top_down:
+                    while not isinstance(paths.pop(), tuple):
+                        pass
+                continue
+            if top_down:
+                yield path, dirnames, filenames
+                paths += [path.joinpath(d) for d in reversed(dirnames)]
 
     def absolute(self):
         """Return an absolute version of this path
diff --git a/Lib/pathlib/_local.py b/Lib/pathlib/_local.py
index b1e678aceb9ce8..0188e7c7722b81 100644
--- a/Lib/pathlib/_local.py
+++ b/Lib/pathlib/_local.py
@@ -118,9 +118,9 @@ def __init__(self, *args):
         paths = []
         for arg in args:
             if isinstance(arg, PurePath):
-                if arg.parser is ntpath and self.parser is posixpath:
+                if arg.parser is not self.parser:
                     # GH-103631: Convert separators for backwards compatibility.
-                    paths.extend(path.replace('\\', '/') for path in arg._raw_paths)
+                    paths.append(arg.as_posix())
                 else:
                     paths.extend(arg._raw_paths)
             else:
@@ -623,7 +623,9 @@ def walk(self, top_down=True, on_error=None, follow_symlinks=False):
         """Walk the directory tree from this directory, similar to os.walk()."""
         sys.audit("pathlib.Path.walk", self, on_error, follow_symlinks)
         root_dir = str(self)
-        results = self._globber.walk(root_dir, top_down, on_error, follow_symlinks)
+        if not follow_symlinks:
+            follow_symlinks = os._walk_symlinks_as_files
+        results = os.walk(root_dir, top_down, on_error, follow_symlinks)
         for path_str, dirnames, filenames in results:
             if root_dir == '.':
                 path_str = path_str[2:]
diff --git a/Lib/pdb.py b/Lib/pdb.py
index e507a9bb896611..cb0a3405c58e55 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -84,6 +84,7 @@
 import inspect
 import textwrap
 import tokenize
+import itertools
 import traceback
 import linecache
 import _colorize
@@ -119,7 +120,7 @@ def find_first_executable_line(code):
     return code.co_firstlineno
 
 def find_function(funcname, filename):
-    cre = re.compile(r'def\s+%s\s*[(]' % re.escape(funcname))
+    cre = re.compile(r'def\s+%s(\s*\[.+\])?\s*[(]' % re.escape(funcname))
     try:
         fp = tokenize.open(filename)
     except OSError:
@@ -139,9 +140,12 @@ def find_function(funcname, filename):
 
             if funcdef:
                 try:
-                    funccode = compile(funcdef, filename, 'exec').co_consts[0]
+                    code = compile(funcdef, filename, 'exec')
                 except SyntaxError:
                     continue
+                # We should always be able to find the code object here
+                funccode = next(c for c in code.co_consts if
+                                isinstance(c, CodeType) and c.co_name == funcname)
                 lineno_offset = find_first_executable_line(funccode)
                 return funcname, filename, funcstart + lineno_offset - 1
     return None
@@ -379,6 +383,7 @@ def forget(self):
         if hasattr(self, 'curframe') and self.curframe:
             self.curframe.f_globals.pop('__pdb_convenience_variables', None)
         self.curframe = None
+        self.curframe_locals = {}
         self.tb_lineno.clear()
 
     def setup(self, f, tb):
@@ -392,9 +397,12 @@ def setup(self, f, tb):
             self.tb_lineno[tb.tb_frame] = lineno
             tb = tb.tb_next
         self.curframe = self.stack[self.curindex][0]
-        # The f_locals dictionary is updated from the actual frame
-        # locals whenever the .f_locals accessor is called, so we
-        # cache it here to ensure that modifications are not overwritten.
+        # The f_locals dictionary used to be updated from the actual frame
+        # locals whenever the .f_locals accessor was called, so it was
+        # cached here to ensure that modifications were not overwritten. While
+        # the caching is no longer required now that f_locals is a direct proxy
+        # on optimized frames, it's also harmless, so the code structure has
+        # been left unchanged.
         self.curframe_locals = self.curframe.f_locals
         self.set_convenience_variable(self.curframe, '_frame', self.curframe)
 
@@ -426,10 +434,16 @@ def user_call(self, frame, argument_list):
     def user_line(self, frame):
         """This function is called when we stop or break at this line."""
         if self._wait_for_mainpyfile:
-            if (self.mainpyfile != self.canonic(frame.f_code.co_filename)
-                or frame.f_lineno <= 0):
+            if (self.mainpyfile != self.canonic(frame.f_code.co_filename)):
                 return
             self._wait_for_mainpyfile = False
+        if self.trace_opcodes:
+            # GH-127321
+            # We want to avoid stopping at an opcode that does not have
+            # an associated line number because pdb does not like it
+            if frame.f_lineno is None:
+                self.set_stepinstr()
+                return
         if self.bp_commands(frame):
             self.interaction(frame, None)
 
@@ -516,7 +530,7 @@ def _validate_file_mtime(self):
 
     # Called before loop, handles display expressions
     # Set up convenience variable containers
-    def preloop(self):
+    def _show_display(self):
         displaying = self.displaying.get(self.curframe)
         if displaying:
             for expr, oldvalue in displaying.items():
@@ -602,10 +616,16 @@ def interaction(self, frame, tb_or_exc):
             assert tb is not None, "main exception must have a traceback"
         with self._hold_exceptions(_chained_exceptions):
             self.setup(frame, tb)
-            # if we have more commands to process, do not show the stack entry
-            if not self.cmdqueue:
-                self.print_stack_entry(self.stack[self.curindex])
+            # We should print the stack entry if and only if the user input
+            # is expected, and we should print it right before the user input.
+            # We achieve this by appending _pdbcmd_print_frame_status to the
+            # command queue. If cmdqueue is not exausted, the user input is
+            # not expected and we will not print the stack entry.
+            self.cmdqueue.append('_pdbcmd_print_frame_status')
             self._cmdloop()
+            # If _pdbcmd_print_frame_status is not used, pop it out
+            if self.cmdqueue and self.cmdqueue[-1] == '_pdbcmd_print_frame_status':
+                self.cmdqueue.pop()
             self.forget()
 
     def displayhook(self, obj):
@@ -741,6 +761,7 @@ def default(self, line):
                             else:
                                 line = line.rstrip('\r\n')
                         buffer += '\n' + line
+                    self.lastcmd = buffer
             save_stdout = sys.stdout
             save_stdin = sys.stdin
             save_displayhook = sys.displayhook
@@ -837,6 +858,10 @@ def onecmd(self, line):
         """
         if not self.commands_defining:
             self._validate_file_mtime()
+            if line.startswith('_pdbcmd'):
+                command, arg, line = self.parseline(line)
+                if hasattr(self, command):
+                    return getattr(self, command)(arg)
             return cmd.Cmd.onecmd(self, line)
         else:
             return self.handle_command_def(line)
@@ -970,6 +995,12 @@ def completedefault(self, text, line, begidx, endidx):
             state += 1
         return matches
 
+    # Pdb meta commands, only intended to be used internally by pdb
+
+    def _pdbcmd_print_frame_status(self, arg):
+        self.print_stack_entry(self.stack[self.curindex])
+        self._show_display()
+
     # Command definitions, called by cmdloop()
     # The argument is the remaining string on the command line
     # Return true to exit from the command loop
@@ -2396,8 +2427,6 @@ def main():
     parser.add_argument('-c', '--command', action='append', default=[], metavar='command', dest='commands',
                         help='pdb commands to execute as if given in a .pdbrc file')
     parser.add_argument('-m', metavar='module', dest='module')
-    parser.add_argument('args', nargs='*',
-                        help="when -m is not specified, the first arg is the script to debug")
 
     if len(sys.argv) == 1:
         # If no arguments were given (python -m pdb), print the whole help message.
@@ -2405,21 +2434,40 @@ def main():
         parser.print_help()
         sys.exit(2)
 
-    opts = parser.parse_args()
+    opts, args = parser.parse_known_args()
+
+    if opts.module:
+        # If a module is being debugged, we consider the arguments after "-m module" to
+        # be potential arguments to the module itself. We need to parse the arguments
+        # before "-m" to check if there is any invalid argument.
+        # e.g. "python -m pdb -m foo --spam" means passing "--spam" to "foo"
+        #      "python -m pdb --spam -m foo" means passing "--spam" to "pdb" and is invalid
+        idx = sys.argv.index('-m')
+        args_to_pdb = sys.argv[1:idx]
+        # This will raise an error if there are invalid arguments
+        parser.parse_args(args_to_pdb)
+    else:
+        # If a script is being debugged, then pdb expects the script name as the first argument.
+        # Anything before the script is considered an argument to pdb itself, which would
+        # be invalid because it's not parsed by argparse.
+        invalid_args = list(itertools.takewhile(lambda a: a.startswith('-'), args))
+        if invalid_args:
+            parser.error(f"unrecognized arguments: {' '.join(invalid_args)}")
+            sys.exit(2)
 
     if opts.module:
         file = opts.module
         target = _ModuleTarget(file)
     else:
-        if not opts.args:
+        if not args:
             parser.error("no module or script to run")
-        file = opts.args.pop(0)
+        file = args.pop(0)
         if file.endswith('.pyz'):
             target = _ZipTarget(file)
         else:
             target = _ScriptTarget(file)
 
-    sys.argv[:] = [file] + opts.args  # Hide "pdb.py" and pdb options from argument list
+    sys.argv[:] = [file] + args  # Hide "pdb.py" and pdb options from argument list
 
     # Note on saving/restoring sys.argv: it's a good idea when sys.argv was
     # modified by the script being debugged. It's a bad idea when it was
@@ -2441,9 +2489,12 @@ def main():
             traceback.print_exception(e, colorize=_colorize.can_colorize())
             print("Uncaught exception. Entering post mortem debugging")
             print("Running 'cont' or 'step' will restart the program")
-            pdb.interaction(None, e)
-            print(f"Post mortem debugger finished. The {target} will "
-                  "be restarted")
+            try:
+                pdb.interaction(None, e)
+            except Restart:
+                print("Restarting", target, "with arguments:")
+                print("\t" + " ".join(sys.argv[1:]))
+                continue
         if pdb._user_requested_quit:
             break
         print("The program finished and will be restarted")
diff --git a/Lib/pickle.py b/Lib/pickle.py
index 33c97c8c5efb28..550f8675f2c890 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -314,16 +314,17 @@ def load_frame(self, frame_size):
 # Tools used for pickling.
 
 def _getattribute(obj, name):
+    top = obj
     for subpath in name.split('.'):
         if subpath == '<locals>':
             raise AttributeError("Can't get local attribute {!r} on {!r}"
-                                 .format(name, obj))
+                                 .format(name, top))
         try:
             parent = obj
             obj = getattr(obj, subpath)
         except AttributeError:
             raise AttributeError("Can't get attribute {!r} on {!r}"
-                                 .format(name, obj)) from None
+                                 .format(name, top)) from None
     return obj, parent
 
 def whichmodule(obj, name):
@@ -532,10 +533,11 @@ def save(self, obj, save_persistent_id=True):
         self.framer.commit_frame()
 
         # Check for persistent id (defined by a subclass)
-        pid = self.persistent_id(obj)
-        if pid is not None and save_persistent_id:
-            self.save_pers(pid)
-            return
+        if save_persistent_id:
+            pid = self.persistent_id(obj)
+            if pid is not None:
+                self.save_pers(pid)
+                return
 
         # Check the memo
         x = self.memo.get(id(obj))
@@ -782,14 +784,10 @@ def save_float(self, obj):
             self.write(FLOAT + repr(obj).encode("ascii") + b'\n')
     dispatch[float] = save_float
 
-    def save_bytes(self, obj):
-        if self.proto < 3:
-            if not obj: # bytes object is empty
-                self.save_reduce(bytes, (), obj=obj)
-            else:
-                self.save_reduce(codecs.encode,
-                                 (str(obj, 'latin1'), 'latin1'), obj=obj)
-            return
+    def _save_bytes_no_memo(self, obj):
+        # helper for writing bytes objects for protocol >= 3
+        # without memoizing them
+        assert self.proto >= 3
         n = len(obj)
         if n <= 0xff:
             self.write(SHORT_BINBYTES + pack("<B", n) + obj)
@@ -799,9 +797,29 @@ def save_bytes(self, obj):
             self._write_large_bytes(BINBYTES + pack("<I", n), obj)
         else:
             self.write(BINBYTES + pack("<I", n) + obj)
+
+    def save_bytes(self, obj):
+        if self.proto < 3:
+            if not obj: # bytes object is empty
+                self.save_reduce(bytes, (), obj=obj)
+            else:
+                self.save_reduce(codecs.encode,
+                                 (str(obj, 'latin1'), 'latin1'), obj=obj)
+            return
+        self._save_bytes_no_memo(obj)
         self.memoize(obj)
     dispatch[bytes] = save_bytes
 
+    def _save_bytearray_no_memo(self, obj):
+        # helper for writing bytearray objects for protocol >= 5
+        # without memoizing them
+        assert self.proto >= 5
+        n = len(obj)
+        if n >= self.framer._FRAME_SIZE_TARGET:
+            self._write_large_bytes(BYTEARRAY8 + pack("<Q", n), obj)
+        else:
+            self.write(BYTEARRAY8 + pack("<Q", n) + obj)
+
     def save_bytearray(self, obj):
         if self.proto < 5:
             if not obj:  # bytearray is empty
@@ -809,18 +827,14 @@ def save_bytearray(self, obj):
             else:
                 self.save_reduce(bytearray, (bytes(obj),), obj=obj)
             return
-        n = len(obj)
-        if n >= self.framer._FRAME_SIZE_TARGET:
-            self._write_large_bytes(BYTEARRAY8 + pack("<Q", n), obj)
-        else:
-            self.write(BYTEARRAY8 + pack("<Q", n) + obj)
+        self._save_bytearray_no_memo(obj)
         self.memoize(obj)
     dispatch[bytearray] = save_bytearray
 
     if _HAVE_PICKLE_BUFFER:
         def save_picklebuffer(self, obj):
             if self.proto < 5:
-                raise PicklingError("PickleBuffer can only pickled with "
+                raise PicklingError("PickleBuffer can only be pickled with "
                                     "protocol >= 5")
             with obj.raw() as m:
                 if not m.contiguous:
@@ -832,10 +846,18 @@ def save_picklebuffer(self, obj):
                 if in_band:
                     # Write data in-band
                     # XXX The C implementation avoids a copy here
+                    buf = m.tobytes()
+                    in_memo = id(buf) in self.memo
                     if m.readonly:
-                        self.save_bytes(m.tobytes())
+                        if in_memo:
+                            self._save_bytes_no_memo(buf)
+                        else:
+                            self.save_bytes(buf)
                     else:
-                        self.save_bytearray(m.tobytes())
+                        if in_memo:
+                            self._save_bytearray_no_memo(buf)
+                        else:
+                            self.save_bytearray(buf)
                 else:
                     # Write data out-of-band
                     self.write(NEXT_BUFFER)
@@ -1072,11 +1094,16 @@ def save_global(self, obj, name=None):
                     (obj, module_name, name))
 
         if self.proto >= 2:
-            code = _extension_registry.get((module_name, name))
-            if code:
-                assert code > 0
+            code = _extension_registry.get((module_name, name), _NoValue)
+            if code is not _NoValue:
                 if code <= 0xff:
-                    write(EXT1 + pack("<B", code))
+                    data = pack("<B", code)
+                    if data == b'\0':
+                        # Should never happen in normal circumstances,
+                        # since the type and the value of the code are
+                        # checked in copyreg.add_extension().
+                        raise RuntimeError("extension code 0 is out of range")
+                    write(EXT1 + data)
                 elif code <= 0xffff:
                     write(EXT2 + pack("<H", code))
                 else:
@@ -1090,11 +1117,35 @@ def save_global(self, obj, name=None):
             self.save(module_name)
             self.save(name)
             write(STACK_GLOBAL)
-        elif parent is not module:
-            self.save_reduce(getattr, (parent, lastname))
-        elif self.proto >= 3:
-            write(GLOBAL + bytes(module_name, "utf-8") + b'\n' +
-                  bytes(name, "utf-8") + b'\n')
+        elif '.' in name:
+            # In protocol < 4, objects with multi-part __qualname__
+            # are represented as
+            # getattr(getattr(..., attrname1), attrname2).
+            dotted_path = name.split('.')
+            name = dotted_path.pop(0)
+            save = self.save
+            for attrname in dotted_path:
+                save(getattr)
+                if self.proto < 2:
+                    write(MARK)
+            self._save_toplevel_by_name(module_name, name)
+            for attrname in dotted_path:
+                save(attrname)
+                if self.proto < 2:
+                    write(TUPLE)
+                else:
+                    write(TUPLE2)
+                write(REDUCE)
+        else:
+            self._save_toplevel_by_name(module_name, name)
+
+        self.memoize(obj)
+
+    def _save_toplevel_by_name(self, module_name, name):
+        if self.proto >= 3:
+            # Non-ASCII identifiers are supported only with protocols >= 3.
+            self.write(GLOBAL + bytes(module_name, "utf-8") + b'\n' +
+                       bytes(name, "utf-8") + b'\n')
         else:
             if self.fix_imports:
                 r_name_mapping = _compat_pickle.REVERSE_NAME_MAPPING
@@ -1104,14 +1155,12 @@ def save_global(self, obj, name=None):
                 elif module_name in r_import_mapping:
                     module_name = r_import_mapping[module_name]
             try:
-                write(GLOBAL + bytes(module_name, "ascii") + b'\n' +
-                      bytes(name, "ascii") + b'\n')
+                self.write(GLOBAL + bytes(module_name, "ascii") + b'\n' +
+                           bytes(name, "ascii") + b'\n')
             except UnicodeEncodeError:
                 raise PicklingError(
                     "can't pickle global identifier '%s.%s' using "
-                    "pickle protocol %i" % (module, name, self.proto)) from None
-
-        self.memoize(obj)
+                    "pickle protocol %i" % (module_name, name, self.proto)) from None
 
     def save_type(self, obj):
         if obj is type(None):
@@ -1548,9 +1597,8 @@ def load_ext4(self):
     dispatch[EXT4[0]] = load_ext4
 
     def get_extension(self, code):
-        nil = []
-        obj = _extension_cache.get(code, nil)
-        if obj is not nil:
+        obj = _extension_cache.get(code, _NoValue)
+        if obj is not _NoValue:
             self.append(obj)
             return
         key = _inverted_registry.get(code)
diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index 51ee4a7a2632ac..33a51492ea9c3b 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -312,7 +312,7 @@ def read_uint8(f):
             doc="Eight-byte unsigned integer, little-endian.")
 
 
-def read_stringnl(f, decode=True, stripquotes=True):
+def read_stringnl(f, decode=True, stripquotes=True, *, encoding='latin-1'):
     r"""
     >>> import io
     >>> read_stringnl(io.BytesIO(b"'abcd'\nefg\n"))
@@ -356,7 +356,7 @@ def read_stringnl(f, decode=True, stripquotes=True):
             raise ValueError("no string quotes around %r" % data)
 
     if decode:
-        data = codecs.escape_decode(data)[0].decode("ascii")
+        data = codecs.escape_decode(data)[0].decode(encoding)
     return data
 
 stringnl = ArgumentDescriptor(
@@ -370,7 +370,7 @@ def read_stringnl(f, decode=True, stripquotes=True):
                    """)
 
 def read_stringnl_noescape(f):
-    return read_stringnl(f, stripquotes=False)
+    return read_stringnl(f, stripquotes=False, encoding='utf-8')
 
 stringnl_noescape = ArgumentDescriptor(
                         name='stringnl_noescape',
@@ -2513,7 +2513,10 @@ def dis(pickle, out=None, memo=None, indentlevel=4, annotate=0):
             # make a mild effort to align arguments
             line += ' ' * (10 - len(opcode.name))
             if arg is not None:
-                line += ' ' + repr(arg)
+                if opcode.name in ("STRING", "BINSTRING", "SHORT_BINSTRING"):
+                    line += ' ' + ascii(arg)
+                else:
+                    line += ' ' + repr(arg)
             if markmsg:
                 line += ' ' + markmsg
         if annotate:
diff --git a/Lib/platform.py b/Lib/platform.py
index ebaba37563120e..8895177e326a5e 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -354,7 +354,8 @@ def _wmi_query(table, *keys):
 ]
 
 _WIN32_SERVER_RELEASES = [
-    ((10, 1, 0), "post2022Server"),
+    ((10, 1, 0), "post2025Server"),
+    ((10, 0, 26100), "2025Server"),
     ((10, 0, 20348), "2022Server"),
     ((10, 0, 17763), "2019Server"),
     ((6, 4, 0), "2016Server"),
@@ -1153,17 +1154,16 @@ def _sys_version(sys_version=None):
     if result is not None:
         return result
 
-    sys_version_parser = re.compile(
-        r'([\w.+]+)\s*'  # "version<space>"
-        r'\(#?([^,]+)'  # "(#buildno"
-        r'(?:,\s*([\w ]*)'  # ", builddate"
-        r'(?:,\s*([\w :]*))?)?\)\s*'  # ", buildtime)<space>"
-        r'\[([^\]]+)\]?', re.ASCII)  # "[compiler]"
-
     if sys.platform.startswith('java'):
         # Jython
+        jython_sys_version_parser = re.compile(
+            r'([\w.+]+)\s*'  # "version<space>"
+            r'\(#?([^,]+)'  # "(#buildno"
+            r'(?:,\s*([\w ]*)'  # ", builddate"
+            r'(?:,\s*([\w :]*))?)?\)\s*'  # ", buildtime)<space>"
+            r'\[([^\]]+)\]?', re.ASCII)  # "[compiler]"
         name = 'Jython'
-        match = sys_version_parser.match(sys_version)
+        match = jython_sys_version_parser.match(sys_version)
         if match is None:
             raise ValueError(
                 'failed to parse Jython sys.version: %s' %
@@ -1190,7 +1190,14 @@ def _sys_version(sys_version=None):
 
     else:
         # CPython
-        match = sys_version_parser.match(sys_version)
+        cpython_sys_version_parser = re.compile(
+            r'([\w.+]+)\s*'  # "version<space>"
+            r'(?:experimental free-threading build\s+)?' # "free-threading-build<space>"
+            r'\(#?([^,]+)'  # "(#buildno"
+            r'(?:,\s*([\w ]*)'  # ", builddate"
+            r'(?:,\s*([\w :]*))?)?\)\s*'  # ", buildtime)<space>"
+            r'\[([^\]]+)\]?', re.ASCII)  # "[compiler]"
+        match = cpython_sys_version_parser.match(sys_version)
         if match is None:
             raise ValueError(
                 'failed to parse CPython sys.version: %s' %
diff --git a/Lib/poplib.py b/Lib/poplib.py
index 1a1629d175b6d9..beb93a0d57cf93 100644
--- a/Lib/poplib.py
+++ b/Lib/poplib.py
@@ -309,7 +309,7 @@ def close(self):
     # optional commands:
 
     def rpop(self, user):
-        """Not sure what this does."""
+        """Send RPOP command to access the mailbox with an alternate user."""
         return self._shortcmd('RPOP %s' % user)
 
 
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index b4547d7893b1cd..f2173032786311 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -22,6 +22,7 @@
 altsep = None
 devnull = '/dev/null'
 
+import errno
 import os
 import sys
 import stat
@@ -135,18 +136,12 @@ def splitdrive(p):
 
 
 try:
-    from posix import _path_splitroot_ex
+    from posix import _path_splitroot_ex as splitroot
 except ImportError:
     def splitroot(p):
-        """Split a pathname into drive, root and tail. On Posix, drive is always
-        empty; the root may be empty, a single slash, or two slashes. The tail
-        contains anything after the root. For example:
-
-            splitroot('foo/bar') == ('', '', 'foo/bar')
-            splitroot('/foo/bar') == ('', '/', 'foo/bar')
-            splitroot('//foo/bar') == ('', '//', 'foo/bar')
-            splitroot('///foo/bar') == ('', '/', '//foo/bar')
-        """
+        """Split a pathname into drive, root and tail.
+
+        The tail contains anything after the root."""
         p = os.fspath(p)
         if isinstance(p, bytes):
             sep = b'/'
@@ -164,23 +159,6 @@ def splitroot(p):
             # Precisely two leading slashes, e.g.: '//foo'. Implementation defined per POSIX, see
             # https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13
             return empty, p[:2], p[2:]
-else:
-    def splitroot(p):
-        """Split a pathname into drive, root and tail. On Posix, drive is always
-        empty; the root may be empty, a single slash, or two slashes. The tail
-        contains anything after the root. For example:
-
-            splitroot('foo/bar') == ('', '', 'foo/bar')
-            splitroot('/foo/bar') == ('', '/', 'foo/bar')
-            splitroot('//foo/bar') == ('', '//', 'foo/bar')
-            splitroot('///foo/bar') == ('', '/', '//foo/bar')
-        """
-        p = os.fspath(p)
-        if isinstance(p, bytes):
-            # Optimisation: the drive is always empty
-            _, root, tail = _path_splitroot_ex(os.fsdecode(p))
-            return b'', os.fsencode(root), os.fsencode(tail)
-        return _path_splitroot_ex(p)
 
 
 # Return the tail (basename) part of a path, same as split(path)[1].
@@ -363,7 +341,7 @@ def expandvars(path):
 # if it contains symbolic links!
 
 try:
-    from posix import _path_normpath
+    from posix import _path_normpath as normpath
 
 except ImportError:
     def normpath(path):
@@ -394,14 +372,6 @@ def normpath(path):
         path = initial_slashes + sep.join(comps)
         return path or dot
 
-else:
-    def normpath(path):
-        """Normalize path, eliminating double slashes, etc."""
-        path = os.fspath(path)
-        if isinstance(path, bytes):
-            return os.fsencode(_path_normpath(os.fsdecode(path))) or b"."
-        return _path_normpath(path) or "."
-
 
 def abspath(path):
     """Return an absolute path."""
@@ -439,6 +409,10 @@ def realpath(filename, *, strict=False):
     # very fast way of spelling list(reversed(...)).
     rest = filename.split(sep)[::-1]
 
+    # Number of unprocessed parts in 'rest'. This can differ from len(rest)
+    # later, because 'rest' might contain markers for unresolved symlinks.
+    part_count = len(rest)
+
     # The resolved path, which is absolute throughout this function.
     # Note: getcwd() returns a normalized and symlink-free path.
     path = sep if filename.startswith(sep) else getcwd()
@@ -449,12 +423,13 @@ def realpath(filename, *, strict=False):
     # the same links.
     seen = {}
 
-    while rest:
+    while part_count:
         name = rest.pop()
         if name is None:
             # resolved symlink target
             seen[rest.pop()] = path
             continue
+        part_count -= 1
         if not name or name == curdir:
             # current dir
             continue
@@ -467,30 +442,33 @@ def realpath(filename, *, strict=False):
         else:
             newpath = path + sep + name
         try:
-            st = os.lstat(newpath)
-            if not stat.S_ISLNK(st.st_mode):
+            st_mode = os.lstat(newpath).st_mode
+            if not stat.S_ISLNK(st_mode):
+                if strict and part_count and not stat.S_ISDIR(st_mode):
+                    raise OSError(errno.ENOTDIR, os.strerror(errno.ENOTDIR),
+                                  newpath)
+                path = newpath
+                continue
+            if newpath in seen:
+                # Already seen this path
+                path = seen[newpath]
+                if path is not None:
+                    # use cached value
+                    continue
+                # The symlink is not resolved, so we must have a symlink loop.
+                if strict:
+                    # Raise OSError(errno.ELOOP)
+                    os.stat(newpath)
                 path = newpath
                 continue
+            target = os.readlink(newpath)
         except OSError:
             if strict:
                 raise
             path = newpath
             continue
         # Resolve the symbolic link
-        if newpath in seen:
-            # Already seen this path
-            path = seen[newpath]
-            if path is not None:
-                # use cached value
-                continue
-            # The symlink is not resolved, so we must have a symlink loop.
-            if strict:
-                # Raise OSError(errno.ELOOP)
-                os.stat(newpath)
-            path = newpath
-            continue
         seen[newpath] = None # not resolved symlink
-        target = os.readlink(newpath)
         if target.startswith(sep):
             # Symlink target is absolute; reset resolved path.
             path = sep
@@ -500,7 +478,9 @@ def realpath(filename, *, strict=False):
         rest.append(newpath)
         rest.append(None)
         # Push the unresolved symlink target parts onto the stack.
-        rest.extend(target.split(sep)[::-1])
+        target_parts = target.split(sep)[::-1]
+        rest.extend(target_parts)
+        part_count += len(target_parts)
 
     return path
 
diff --git a/Lib/pstats.py b/Lib/pstats.py
index 2f054bb4011e7f..d21abe21523a6d 100644
--- a/Lib/pstats.py
+++ b/Lib/pstats.py
@@ -83,7 +83,7 @@ class Stats:
     method now take arbitrarily many file names as arguments.
 
     All the print methods now take an argument that indicates how many lines
-    to print.  If the arg is a floating point number between 0 and 1.0, then
+    to print.  If the arg is a floating-point number between 0 and 1.0, then
     it is taken as a decimal percentage of the available lines to be printed
     (e.g., .1 means print 10% of all available lines).  If it is an integer,
     it is taken to mean the number of lines of data that you wish to have
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 55ccf2152c26cb..1a527b2c307b68 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -54,6 +54,7 @@ class or function within a module or module in a package.  If the
 #     the current directory is changed with os.chdir(), an incorrect
 #     path will be displayed.
 
+import ast
 import __future__
 import builtins
 import importlib._bootstrap
@@ -76,7 +77,7 @@ class or function within a module or module in a package.  If the
 from reprlib import Repr
 from traceback import format_exception_only
 
-from _pyrepl.pager import (get_pager, plain, escape_less, pipe_pager,
+from _pyrepl.pager import (get_pager, plain, pipe_pager,
                            plain_pager, tempfile_pager, tty_pager)
 
 
@@ -381,21 +382,29 @@ def ispackage(path):
     return False
 
 def source_synopsis(file):
-    line = file.readline()
-    while line[:1] == '#' or not line.strip():
-        line = file.readline()
-        if not line: break
-    line = line.strip()
-    if line[:4] == 'r"""': line = line[1:]
-    if line[:3] == '"""':
-        line = line[3:]
-        if line[-1:] == '\\': line = line[:-1]
-        while not line.strip():
-            line = file.readline()
-            if not line: break
-        result = line.split('"""')[0].strip()
-    else: result = None
-    return result
+    """Return the one-line summary of a file object, if present"""
+
+    string = ''
+    try:
+        tokens = tokenize.generate_tokens(file.readline)
+        for tok_type, tok_string, _, _, _ in tokens:
+            if tok_type == tokenize.STRING:
+                string += tok_string
+            elif tok_type == tokenize.NEWLINE:
+                with warnings.catch_warnings():
+                    # Ignore the "invalid escape sequence" warning.
+                    warnings.simplefilter("ignore", SyntaxWarning)
+                    docstring = ast.literal_eval(string)
+                if not isinstance(docstring, str):
+                    return None
+                return docstring.strip().split('\n')[0].strip()
+            elif tok_type == tokenize.OP and tok_string in ('(', ')'):
+                string += tok_string
+            elif tok_type not in (tokenize.COMMENT, tokenize.NL, tokenize.ENCODING):
+                return None
+    except (tokenize.TokenError, UnicodeDecodeError, SyntaxError):
+        return None
+    return None
 
 def synopsis(filename, cache={}):
     """Get the one-line summary out of a module file."""
@@ -1753,7 +1762,14 @@ def doc(thing, title='Python Library Documentation: %s', forceload=0,
     """Display text documentation, given an object or a path to an object."""
     if output is None:
         try:
-            what = thing if isinstance(thing, str) else type(thing).__name__
+            if isinstance(thing, str):
+                what = thing
+            else:
+                what = getattr(thing, '__qualname__', None)
+                if not isinstance(what, str):
+                    what = getattr(thing, '__name__', None)
+                    if not isinstance(what, str):
+                        what = type(thing).__name__ + ' object'
             pager(render_doc(thing, title, forceload), f'Help on {what!s}')
         except ImportError as exc:
             if is_cli:
@@ -1854,6 +1870,7 @@ class Helper:
         ':': 'SLICINGS DICTIONARYLITERALS',
         '@': 'def class',
         '\\': 'STRINGS',
+        ':=': 'ASSIGNMENTEXPRESSIONS',
         '_': 'PRIVATENAMES',
         '__': 'PRIVATENAMES SPECIALMETHODS',
         '`': 'BACKQUOTES',
@@ -1947,6 +1964,7 @@ class Helper:
         'ASSERTION': 'assert',
         'ASSIGNMENT': ('assignment', 'AUGMENTEDASSIGNMENT'),
         'AUGMENTEDASSIGNMENT': ('augassign', 'NUMBERMETHODS'),
+        'ASSIGNMENTEXPRESSIONS': ('assignment-expressions', ''),
         'DELETION': 'del',
         'RETURNING': 'return',
         'IMPORTING': 'import',
@@ -2008,7 +2026,7 @@ def interact(self):
             if (len(request) > 2 and request[0] == request[-1] in ("'", '"')
                     and request[0] not in request[1:-1]):
                 request = request[1:-1]
-            if request.lower() in ('q', 'quit'): break
+            if request.lower() in ('q', 'quit', 'exit'): break
             if request == 'help':
                 self.intro()
             else:
@@ -2035,7 +2053,7 @@ def help(self, request, is_cli=False):
             elif request in self.symbols: self.showsymbol(request)
             elif request in ['True', 'False', 'None']:
                 # special case these keywords since they are objects too
-                doc(eval(request), 'Help on %s:', is_cli=is_cli)
+                doc(eval(request), 'Help on %s:', output=self._output, is_cli=is_cli)
             elif request in self.keywords: self.showtopic(request)
             elif request in self.topics: self.showtopic(request)
             elif request: doc(request, 'Help on %s:', output=self._output, is_cli=is_cli)
@@ -2060,7 +2078,7 @@ def intro(self):
 enter "modules spam".
 
 To quit this help utility and return to the interpreter,
-enter "q" or "quit".
+enter "q", "quit" or "exit".
 '''.format('%d.%d' % sys.version_info[:2]))
 
     def list(self, items, columns=4, width=80):
@@ -2128,7 +2146,11 @@ def showtopic(self, topic, more_xrefs=''):
             text = 'Related help topics: ' + ', '.join(xrefs.split()) + '\n'
             wrapped_text = textwrap.wrap(text, 72)
             doc += '\n%s\n' % '\n'.join(wrapped_text)
-        pager(doc, f'Help on {topic!s}')
+
+        if self._output is None:
+            pager(doc, f'Help on {topic!s}')
+        else:
+            self.output.write(doc)
 
     def _gettopic(self, topic, more_xrefs=''):
         """Return unbuffered tuple of (topic, xrefs).
diff --git a/Lib/pydoc_data/topics.py b/Lib/pydoc_data/topics.py
index 4643df80e44aaf..5b73d86718af4d 100644
--- a/Lib/pydoc_data/topics.py
+++ b/Lib/pydoc_data/topics.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Wed May  8 11:11:17 2024
+# Autogenerated by Sphinx on Tue Dec  3 18:56:45 2024
 # as part of the release process.
 topics = {'assert': 'The "assert" statement\n'
            '**********************\n'
@@ -29,13 +29,12 @@
            '(command\n'
            'line option "-O").  The current code generator emits no code for '
            'an\n'
-           'assert statement when optimization is requested at compile time.  '
-           'Note\n'
-           'that it is unnecessary to include the source code for the '
-           'expression\n'
-           'that failed in the error message; it will be displayed as part of '
-           'the\n'
-           'stack trace.\n'
+           '"assert" statement when optimization is requested at compile '
+           'time.\n'
+           'Note that it is unnecessary to include the source code for the\n'
+           'expression that failed in the error message; it will be displayed '
+           'as\n'
+           'part of the stack trace.\n'
            '\n'
            'Assignments to "__debug__" are illegal.  The value for the '
            'built-in\n'
@@ -308,10 +307,10 @@
                'target.\n'
                'The target is only evaluated once.\n'
                '\n'
-               'An augmented assignment expression like "x += 1" can be '
-               'rewritten as\n'
-               '"x = x + 1" to achieve a similar, but not exactly equal '
-               'effect. In the\n'
+               'An augmented assignment statement like "x += 1" can be '
+               'rewritten as "x\n'
+               '= x + 1" to achieve a similar, but not exactly equal effect. '
+               'In the\n'
                'augmented version, "x" is only evaluated once. Also, when '
                'possible,\n'
                'the actual operation is performed *in-place*, meaning that '
@@ -362,21 +361,26 @@
                'a single\n'
                'target is allowed.\n'
                '\n'
-               'For simple names as assignment targets, if in class or module '
-               'scope,\n'
-               'the annotations are evaluated and stored in a special class or '
-               'module\n'
-               'attribute "__annotations__" that is a dictionary mapping from '
-               'variable\n'
-               'names (mangled if private) to evaluated annotations. This '
-               'attribute is\n'
-               'writable and is automatically created at the start of class or '
-               'module\n'
-               'body execution, if annotations are found statically.\n'
-               '\n'
-               'For expressions as assignment targets, the annotations are '
+               'The assignment target is considered “simple” if it consists of '
+               'a\n'
+               'single name that is not enclosed in parentheses. For simple '
+               'assignment\n'
+               'targets, if in class or module scope, the annotations are '
                'evaluated\n'
-               'if in class or module scope, but not stored.\n'
+               'and stored in a special class or module attribute '
+               '"__annotations__"\n'
+               'that is a dictionary mapping from variable names (mangled if '
+               'private)\n'
+               'to evaluated annotations. This attribute is writable and is\n'
+               'automatically created at the start of class or module body '
+               'execution,\n'
+               'if annotations are found statically.\n'
+               '\n'
+               'If the assignment target is not simple (an attribute, '
+               'subscript node,\n'
+               'or parenthesized name), the annotation is evaluated if in '
+               'class or\n'
+               'module scope, but not stored.\n'
                '\n'
                'If a name is annotated in a function scope, then this name is '
                'local\n'
@@ -416,6 +420,44 @@
                'some expressions (like un-parenthesized tuple expressions) '
                'caused a\n'
                'syntax error.\n',
+ 'assignment-expressions': 'Assignment expressions\n'
+                           '**********************\n'
+                           '\n'
+                           '   assignment_expression ::= [identifier ":="] '
+                           'expression\n'
+                           '\n'
+                           'An assignment expression (sometimes also called a '
+                           '“named expression”\n'
+                           'or “walrus”) assigns an "expression" to an '
+                           '"identifier", while also\n'
+                           'returning the value of the "expression".\n'
+                           '\n'
+                           'One common use case is when handling matched '
+                           'regular expressions:\n'
+                           '\n'
+                           '   if matching := pattern.search(data):\n'
+                           '       do_something(matching)\n'
+                           '\n'
+                           'Or, when processing a file stream in chunks:\n'
+                           '\n'
+                           '   while chunk := file.read(9000):\n'
+                           '       process(chunk)\n'
+                           '\n'
+                           'Assignment expressions must be surrounded by '
+                           'parentheses when used as\n'
+                           'expression statements and when used as '
+                           'sub-expressions in slicing,\n'
+                           'conditional, lambda, keyword-argument, and '
+                           'comprehension-if\n'
+                           'expressions and in "assert", "with", and '
+                           '"assignment" statements. In\n'
+                           'all other places where they can be used, '
+                           'parentheses are not required,\n'
+                           'including in "if" and "while" statements.\n'
+                           '\n'
+                           'Added in version 3.8: See **PEP 572** for more '
+                           'details about\n'
+                           'assignment expressions.\n',
  'async': 'Coroutines\n'
           '**********\n'
           '\n'
@@ -555,31 +597,67 @@
                      'evaluate it\n'
                      'raises a "NameError" exception.\n'
                      '\n'
-                     '**Private name mangling:** When an identifier that '
-                     'textually occurs in\n'
-                     'a class definition begins with two or more underscore '
-                     'characters and\n'
-                     'does not end in two or more underscores, it is '
-                     'considered a *private\n'
-                     'name* of that class. Private names are transformed to a '
-                     'longer form\n'
-                     'before code is generated for them.  The transformation '
-                     'inserts the\n'
-                     'class name, with leading underscores removed and a '
-                     'single underscore\n'
-                     'inserted, in front of the name.  For example, the '
-                     'identifier "__spam"\n'
-                     'occurring in a class named "Ham" will be transformed to '
-                     '"_Ham__spam".\n'
-                     'This transformation is independent of the syntactical '
+                     '\n'
+                     'Private name mangling\n'
+                     '=====================\n'
+                     '\n'
+                     'When an identifier that textually occurs in a class '
+                     'definition begins\n'
+                     'with two or more underscore characters and does not end '
+                     'in two or more\n'
+                     'underscores, it is considered a *private name* of that '
+                     'class.\n'
+                     '\n'
+                     'See also: The class specifications.\n'
+                     '\n'
+                     'More precisely, private names are transformed to a '
+                     'longer form before\n'
+                     'code is generated for them.  If the transformed name is '
+                     'longer than\n'
+                     '255 characters, implementation-defined truncation may '
+                     'happen.\n'
+                     '\n'
+                     'The transformation is independent of the syntactical '
                      'context in which\n'
-                     'the identifier is used.  If the transformed name is '
-                     'extremely long\n'
-                     '(longer than 255 characters), implementation defined '
-                     'truncation may\n'
-                     'happen. If the class name consists only of underscores, '
-                     'no\n'
-                     'transformation is done.\n',
+                     'the identifier is used but only the following private '
+                     'identifiers are\n'
+                     'mangled:\n'
+                     '\n'
+                     '* Any name used as the name of a variable that is '
+                     'assigned or read or\n'
+                     '  any name of an attribute being accessed.\n'
+                     '\n'
+                     '  The "__name__" attribute of nested functions, classes, '
+                     'and type\n'
+                     '  aliases is however not mangled.\n'
+                     '\n'
+                     '* The name of imported modules, e.g., "__spam" in '
+                     '"import __spam". If\n'
+                     '  the module is part of a package (i.e., its name '
+                     'contains a dot), the\n'
+                     '  name is *not* mangled, e.g., the "__foo" in "import '
+                     '__foo.bar" is\n'
+                     '  not mangled.\n'
+                     '\n'
+                     '* The name of an imported member, e.g., "__f" in "from '
+                     'spam import\n'
+                     '  __f".\n'
+                     '\n'
+                     'The transformation rule is defined as follows:\n'
+                     '\n'
+                     '* The class name, with leading underscores removed and a '
+                     'single\n'
+                     '  leading underscore inserted, is inserted in front of '
+                     'the identifier,\n'
+                     '  e.g., the identifier "__spam" occurring in a class '
+                     'named "Foo",\n'
+                     '  "_Foo" or "__Foo" is transformed to "_Foo__spam".\n'
+                     '\n'
+                     '* If the class name consists only of underscores, the '
+                     'transformation\n'
+                     '  is the identity, e.g., the identifier "__spam" '
+                     'occurring in a class\n'
+                     '  named "_" or "__" is left as is.\n',
  'atom-literals': 'Literals\n'
                   '********\n'
                   '\n'
@@ -592,10 +670,10 @@
                   '\n'
                   'Evaluation of a literal yields an object of the given type '
                   '(string,\n'
-                  'bytes, integer, floating point number, complex number) with '
+                  'bytes, integer, floating-point number, complex number) with '
                   'the given\n'
                   'value.  The value may be approximated in the case of '
-                  'floating point\n'
+                  'floating-point\n'
                   'and imaginary (complex) literals.  See section Literals for '
                   'details.\n'
                   '\n'
@@ -632,7 +710,8 @@
                      'should either\n'
                      '   return the (computed) attribute value or raise an '
                      '"AttributeError"\n'
-                     '   exception.\n'
+                     '   exception. The "object" class itself does not provide '
+                     'this method.\n'
                      '\n'
                      '   Note that if the attribute is found through the '
                      'normal mechanism,\n'
@@ -815,7 +894,9 @@
                      'parents).  In the\n'
                      'examples below, “the attribute” refers to the attribute '
                      'whose name is\n'
-                     'the key of the property in the owner class’ "__dict__".\n'
+                     'the key of the property in the owner class’ "__dict__".  '
+                     'The "object"\n'
+                     'class itself does not implement any of these protocols.\n'
                      '\n'
                      'object.__get__(self, instance, owner=None)\n'
                      '\n'
@@ -1053,11 +1134,13 @@
                      'to the class\n'
                      '  where it is defined.  *__slots__* declared in parents '
                      'are available\n'
-                     '  in child classes. However, child subclasses will get a '
-                     '"__dict__"\n'
-                     '  and *__weakref__* unless they also define *__slots__* '
-                     '(which should\n'
-                     '  only contain names of any *additional* slots).\n'
+                     '  in child classes. However, instances of a child '
+                     'subclass will get a\n'
+                     '  "__dict__" and *__weakref__* unless the subclass also '
+                     'defines\n'
+                     '  *__slots__* (which should only contain names of any '
+                     '*additional*\n'
+                     '  slots).\n'
                      '\n'
                      '* If a class defines a slot also defined in a base '
                      'class, the instance\n'
@@ -1163,10 +1246,10 @@
               'target.\n'
               'The target is only evaluated once.\n'
               '\n'
-              'An augmented assignment expression like "x += 1" can be '
-              'rewritten as\n'
-              '"x = x + 1" to achieve a similar, but not exactly equal effect. '
-              'In the\n'
+              'An augmented assignment statement like "x += 1" can be '
+              'rewritten as "x\n'
+              '= x + 1" to achieve a similar, but not exactly equal effect. In '
+              'the\n'
               'augmented version, "x" is only evaluated once. Also, when '
               'possible,\n'
               'the actual operation is performed *in-place*, meaning that '
@@ -1239,6 +1322,10 @@
            'The "@" (at) operator is intended to be used for matrix\n'
            'multiplication.  No builtin Python types implement this operator.\n'
            '\n'
+           'This operation can be customized using the special "__matmul__()" '
+           'and\n'
+           '"__rmatmul__()" methods.\n'
+           '\n'
            'Added in version 3.5.\n'
            '\n'
            'The "/" (division) and "//" (floor division) operators yield the\n'
@@ -1251,17 +1338,19 @@
            'result.  Division by zero raises the "ZeroDivisionError" '
            'exception.\n'
            '\n'
-           'This operation can be customized using the special "__truediv__()" '
+           'The division operation can be customized using the special\n'
+           '"__truediv__()" and "__rtruediv__()" methods. The floor division\n'
+           'operation can be customized using the special "__floordiv__()" '
            'and\n'
-           '"__floordiv__()" methods.\n'
+           '"__rfloordiv__()" methods.\n'
            '\n'
            'The "%" (modulo) operator yields the remainder from the division '
            'of\n'
            'the first argument by the second.  The numeric arguments are '
            'first\n'
            'converted to a common type.  A zero right argument raises the\n'
-           '"ZeroDivisionError" exception.  The arguments may be floating '
-           'point\n'
+           '"ZeroDivisionError" exception.  The arguments may be '
+           'floating-point\n'
            'numbers, e.g., "3.14%0.7" equals "0.34" (since "3.14" equals '
            '"4*0.7 +\n'
            '0.34".)  The modulo operator always yields a result with the same '
@@ -1288,13 +1377,13 @@
            '\n'
            'The *modulo* operation can be customized using the special '
            '"__mod__()"\n'
-           'method.\n'
+           'and "__rmod__()" methods.\n'
            '\n'
            'The floor division operator, the modulo operator, and the '
            '"divmod()"\n'
            'function are not defined for complex numbers.  Instead, convert to '
            'a\n'
-           'floating point number using the "abs()" function if appropriate.\n'
+           'floating-point number using the "abs()" function if appropriate.\n'
            '\n'
            'The "+" (addition) operator yields the sum of its arguments.  The\n'
            'arguments must either both be numbers or both be sequences of the '
@@ -1313,7 +1402,8 @@
            'The numeric arguments are first converted to a common type.\n'
            '\n'
            'This operation can be customized using the special "__sub__()" '
-           'method.\n',
+           'and\n'
+           '"__rsub__()" methods.\n',
  'bitwise': 'Binary bitwise operations\n'
             '*************************\n'
             '\n'
@@ -1479,7 +1569,9 @@
                    '   Called when the instance is “called” as a function; if '
                    'this method\n'
                    '   is defined, "x(arg1, arg2, ...)" roughly translates to\n'
-                   '   "type(x).__call__(x, arg1, ...)".\n',
+                   '   "type(x).__call__(x, arg1, ...)". The "object" class '
+                   'itself does\n'
+                   '   not provide this method.\n',
  'calls': 'Calls\n'
           '*****\n'
           '\n'
@@ -1664,6 +1756,9 @@
           '   Function definitions.  When the code block executes a "return"\n'
           '   statement, this specifies the return value of the function '
           'call.\n'
+          '   If execution reaches the end of the code block without executing '
+          'a\n'
+          '   "return" statement, the return value is "None".\n'
           '\n'
           'a built-in function or method:\n'
           '   The result is up to the interpreter; see Built-in Functions for '
@@ -2388,18 +2483,16 @@
              'An\n'
              'expression-less "except" clause, if present, must be last; it '
              'matches\n'
-             'any exception. For an "except" clause with an expression, that\n'
-             'expression is evaluated, and the clause matches the exception if '
-             'the\n'
-             'resulting object is “compatible” with the exception.  An object '
-             'is\n'
-             'compatible with an exception if the object is the class or a '
-             '*non-\n'
-             'virtual base class* of the exception object, or a tuple '
-             'containing an\n'
-             'item that is the class or a non-virtual base class of the '
-             'exception\n'
-             'object.\n'
+             'any exception.\n'
+             '\n'
+             'For an "except" clause with an expression, the expression must\n'
+             'evaluate to an exception type or a tuple of exception types. '
+             'The\n'
+             'raised exception matches an "except" clause whose expression '
+             'evaluates\n'
+             'to the class or a *non-virtual base class* of the exception '
+             'object, or\n'
+             'to a tuple that contains such a class.\n'
              '\n'
              'If no "except" clause matches the exception, the search for an\n'
              'exception handler continues in the surrounding code and on the\n'
@@ -2548,13 +2641,16 @@
              '   ...\n'
              "   ExceptionGroup('', (BlockingIOError()))\n"
              '\n'
-             'An "except*" clause must have a matching type, and this type '
-             'cannot be\n'
-             'a subclass of "BaseExceptionGroup". It is not possible to mix '
-             '"except"\n'
-             'and "except*" in the same "try". "break", "continue" and '
-             '"return"\n'
-             'cannot appear in an "except*" clause.\n'
+             'An "except*" clause must have a matching expression; it cannot '
+             'be\n'
+             '"except*:". Furthermore, this expression cannot contain '
+             'exception\n'
+             'group types, because that would have ambiguous semantics.\n'
+             '\n'
+             'It is not possible to mix "except" and "except*" in the same '
+             '"try".\n'
+             '"break", "continue" and "return" cannot appear in an "except*" '
+             'clause.\n'
              '\n'
              '\n'
              '"else" clause\n'
@@ -2711,18 +2807,15 @@
              '   enter = type(manager).__enter__\n'
              '   exit = type(manager).__exit__\n'
              '   value = enter(manager)\n'
-             '   hit_except = False\n'
              '\n'
              '   try:\n'
              '       TARGET = value\n'
              '       SUITE\n'
              '   except:\n'
-             '       hit_except = True\n'
              '       if not exit(manager, *sys.exc_info()):\n'
              '           raise\n'
-             '   finally:\n'
-             '       if not hit_except:\n'
-             '           exit(manager, None, None, None)\n'
+             '   else:\n'
+             '       exit(manager, None, None, None)\n'
              '\n'
              'With more than one item, the context managers are processed as '
              'if\n'
@@ -3052,7 +3145,7 @@
              '                       | "None"\n'
              '                       | "True"\n'
              '                       | "False"\n'
-             '                       | signed_number: NUMBER | "-" NUMBER\n'
+             '   signed_number   ::= ["-"] NUMBER\n'
              '\n'
              'The rule "strings" and the token "NUMBER" are defined in the '
              'standard\n'
@@ -3522,10 +3615,12 @@
              '   parameter_list_no_posonly ::= defparameter ("," '
              'defparameter)* ["," [parameter_list_starargs]]\n'
              '                                 | parameter_list_starargs\n'
-             '   parameter_list_starargs   ::= "*" [parameter] ("," '
+             '   parameter_list_starargs   ::= "*" [star_parameter] ("," '
              'defparameter)* ["," ["**" parameter [","]]]\n'
              '                               | "**" parameter [","]\n'
              '   parameter                 ::= identifier [":" expression]\n'
+             '   star_parameter            ::= identifier [":" ["*"] '
+             'expression]\n'
              '   defparameter              ::= parameter ["=" expression]\n'
              '   funcname                  ::= identifier\n'
              '\n'
@@ -3653,27 +3748,31 @@
              'expression"”\n'
              'following the parameter name.  Any parameter may have an '
              'annotation,\n'
-             'even those of the form "*identifier" or "**identifier".  '
-             'Functions may\n'
-             'have “return” annotation of the form “"-> expression"” after '
-             'the\n'
-             'parameter list.  These annotations can be any valid Python '
-             'expression.\n'
-             'The presence of annotations does not change the semantics of a\n'
-             'function.  The annotation values are available as values of a\n'
-             'dictionary keyed by the parameters’ names in the '
-             '"__annotations__"\n'
-             'attribute of the function object.  If the "annotations" import '
-             'from\n'
-             '"__future__" is used, annotations are preserved as strings at '
-             'runtime\n'
-             'which enables postponed evaluation.  Otherwise, they are '
-             'evaluated\n'
-             'when the function definition is executed.  In this case '
-             'annotations\n'
-             'may be evaluated in a different order than they appear in the '
-             'source\n'
-             'code.\n'
+             'even those of the form "*identifier" or "**identifier". (As a '
+             'special\n'
+             'case, parameters of the form "*identifier" may have an '
+             'annotation “":\n'
+             '*expression"”.) Functions may have “return” annotation of the '
+             'form\n'
+             '“"-> expression"” after the parameter list.  These annotations '
+             'can be\n'
+             'any valid Python expression.  The presence of annotations does '
+             'not\n'
+             'change the semantics of a function.  The annotation values are\n'
+             'available as values of a dictionary keyed by the parameters’ '
+             'names in\n'
+             'the "__annotations__" attribute of the function object.  If the\n'
+             '"annotations" import from "__future__" is used, annotations are\n'
+             'preserved as strings at runtime which enables postponed '
+             'evaluation.\n'
+             'Otherwise, they are evaluated when the function definition is\n'
+             'executed.  In this case annotations may be evaluated in a '
+             'different\n'
+             'order than they appear in the source code.\n'
+             '\n'
+             'Changed in version 3.11: Parameters of the form “"*identifier"” '
+             'may\n'
+             'have an annotation “": *expression"”. See **PEP 646**.\n'
              '\n'
              'It is also possible to create anonymous functions (functions not '
              'bound\n'
@@ -4357,6 +4456,9 @@
                      '\n'
                      'For more information on context managers, see Context '
                      'Manager Types.\n'
+                     'The "object" class itself does not provide the context '
+                     'manager\n'
+                     'methods.\n'
                      '\n'
                      'object.__enter__(self)\n'
                      '\n'
@@ -4425,7 +4527,7 @@
                 'converted to\n'
                 '  complex;\n'
                 '\n'
-                '* otherwise, if either argument is a floating point number, '
+                '* otherwise, if either argument is a floating-point number, '
                 'the other\n'
                 '  is converted to floating point;\n'
                 '\n'
@@ -4536,6 +4638,10 @@
                   '   It is not guaranteed that "__del__()" methods are called '
                   'for\n'
                   '   objects that still exist when the interpreter exits.\n'
+                  '   "weakref.finalize" provides a straightforward way to '
+                  'register a\n'
+                  '   cleanup function to be called when an object is garbage '
+                  'collected.\n'
                   '\n'
                   '   Note:\n'
                   '\n'
@@ -4622,17 +4728,20 @@
                   '\n'
                   '   This is typically used for debugging, so it is important '
                   'that the\n'
-                  '   representation is information-rich and unambiguous.\n'
+                  '   representation is information-rich and unambiguous. A '
+                  'default\n'
+                  '   implementation is provided by the "object" class '
+                  'itself.\n'
                   '\n'
                   'object.__str__(self)\n'
                   '\n'
-                  '   Called by "str(object)" and the built-in functions '
-                  '"format()" and\n'
-                  '   "print()" to compute the “informal” or nicely printable '
-                  'string\n'
-                  '   representation of an object.  The return value must be a '
-                  'string\n'
-                  '   object.\n'
+                  '   Called by "str(object)", the default "__format__()" '
+                  'implementation,\n'
+                  '   and the built-in function "print()", to compute the '
+                  '“informal” or\n'
+                  '   nicely printable string representation of an object.  '
+                  'The return\n'
+                  '   value must be a str object.\n'
                   '\n'
                   '   This method differs from "object.__repr__()" in that '
                   'there is no\n'
@@ -4648,7 +4757,9 @@
                   '\n'
                   '   Called by bytes to compute a byte-string representation '
                   'of an\n'
-                  '   object. This should return a "bytes" object.\n'
+                  '   object. This should return a "bytes" object. The '
+                  '"object" class\n'
+                  '   itself does not provide this method.\n'
                   '\n'
                   'object.__format__(self, format_spec)\n'
                   '\n'
@@ -4676,6 +4787,11 @@
                   '\n'
                   '   The return value must be a string object.\n'
                   '\n'
+                  '   The default implementation by the "object" class should '
+                  'be given an\n'
+                  '   empty *format_spec* string. It delegates to '
+                  '"__str__()".\n'
+                  '\n'
                   '   Changed in version 3.4: The __format__ method of '
                   '"object" itself\n'
                   '   raises a "TypeError" if passed any non-empty string.\n'
@@ -4733,6 +4849,16 @@
                   '   ordering operations from a single root operation, see\n'
                   '   "functools.total_ordering()".\n'
                   '\n'
+                  '   By default, the "object" class provides implementations '
+                  'consistent\n'
+                  '   with Value comparisons: equality compares according to '
+                  'object\n'
+                  '   identity, and order comparisons raise "TypeError". Each '
+                  'default\n'
+                  '   method may generate these results directly, but may also '
+                  'return\n'
+                  '   "NotImplemented".\n'
+                  '\n'
                   '   See the paragraph on "__hash__()" for some important '
                   'notes on\n'
                   '   creating *hashable* objects which support custom '
@@ -4819,12 +4945,13 @@
                   '\n'
                   '   User-defined classes have "__eq__()" and "__hash__()" '
                   'methods by\n'
-                  '   default; with them, all objects compare unequal (except '
-                  'with\n'
-                  '   themselves) and "x.__hash__()" returns an appropriate '
-                  'value such\n'
-                  '   that "x == y" implies both that "x is y" and "hash(x) == '
-                  'hash(y)".\n'
+                  '   default (inherited from the "object" class); with them, '
+                  'all objects\n'
+                  '   compare unequal (except with themselves) and '
+                  '"x.__hash__()" returns\n'
+                  '   an appropriate value such that "x == y" implies both '
+                  'that "x is y"\n'
+                  '   and "hash(x) == hash(y)".\n'
                   '\n'
                   '   A class that overrides "__eq__()" and does not define '
                   '"__hash__()"\n'
@@ -4895,9 +5022,9 @@
                   'the object is\n'
                   '   considered true if its result is nonzero.  If a class '
                   'defines\n'
-                  '   neither "__len__()" nor "__bool__()", all its instances '
-                  'are\n'
-                  '   considered true.\n',
+                  '   neither "__len__()" nor "__bool__()" (which is true of '
+                  'the "object"\n'
+                  '   class itself), all its instances are considered true.\n',
  'debugger': '"pdb" — The Python Debugger\n'
              '***************************\n'
              '\n'
@@ -5034,6 +5161,12 @@
              '   0\n'
              '   (Pdb)\n'
              '\n'
+             'Changed in version 3.13: The implementation of **PEP 667** means '
+             'that\n'
+             'name assignments made via "pdb" will immediately affect the '
+             'active\n'
+             'scope, even when running inside an *optimized scope*.\n'
+             '\n'
              'The module defines the following functions; each enters the '
              'debugger\n'
              'in a slightly different way:\n'
@@ -5245,7 +5378,8 @@
              '* "$_exception": the exception if the frame is raising an '
              'exception\n'
              '\n'
-             'Added in version 3.12.\n'
+             'Added in version 3.12: Added the *convenience variable* '
+             'feature.\n'
              '\n'
              'If a file ".pdbrc" exists in the user’s home directory or in '
              'the\n'
@@ -5620,24 +5754,22 @@
              '\n'
              'interact\n'
              '\n'
-             '   Start an interactive interpreter (using the "code" module) '
-             'whose\n'
-             '   global namespace contains all the (global and local) names '
-             'found in\n'
-             '   the current scope. Use "exit()" or "quit()" to exit the '
-             'interpreter\n'
-             '   and return to the debugger.\n'
+             '   Start an interactive interpreter (using the "code" module) in '
+             'a new\n'
+             '   global namespace initialised from the local and global '
+             'namespaces\n'
+             '   for the current scope. Use "exit()" or "quit()" to exit the\n'
+             '   interpreter and return to the debugger.\n'
              '\n'
              '   Note:\n'
              '\n'
-             '     Because interact creates a new global namespace with the '
-             'current\n'
-             '     global and local namespace for execution, assignment to '
-             'variables\n'
-             '     will not affect the original namespaces. However, '
-             'modification to\n'
-             '     the mutable objects will be reflected in the original '
-             'namespaces.\n'
+             '     As "interact" creates a new dedicated namespace for code\n'
+             '     execution, assignments to variables will not affect the '
+             'original\n'
+             '     namespaces. However, modifications to any referenced '
+             'mutable\n'
+             '     objects will be reflected in the original namespaces as '
+             'usual.\n'
              '\n'
              '   Added in version 3.2.\n'
              '\n'
@@ -6290,11 +6422,11 @@
               '\n'
               '* While annotation scopes have an internal name, that name is '
               'not\n'
-              '  reflected in the *__qualname__* of objects defined within the '
-              'scope.\n'
-              '  Instead, the "__qualname__" of such objects is as if the '
-              'object were\n'
-              '  defined in the enclosing scope.\n'
+              '  reflected in the *qualified name* of objects defined within '
+              'the\n'
+              '  scope. Instead, the "__qualname__" of such objects is as if '
+              'the\n'
+              '  object were defined in the enclosing scope.\n'
               '\n'
               'Added in version 3.12: Annotation scopes were introduced in '
               'Python\n'
@@ -6496,12 +6628,17 @@
  'exprlists': 'Expression lists\n'
               '****************\n'
               '\n'
-              '   expression_list    ::= expression ("," expression)* [","]\n'
-              '   starred_list       ::= starred_item ("," starred_item)* '
+              '   starred_expression       ::= ["*"] or_expr\n'
+              '   flexible_expression      ::= assignment_expression | '
+              'starred_expression\n'
+              '   flexible_expression_list ::= flexible_expression ("," '
+              'flexible_expression)* [","]\n'
+              '   starred_expression_list  ::= starred_expression ("," '
+              'starred_expression)* [","]\n'
+              '   expression_list          ::= expression ("," expression)* '
               '[","]\n'
-              '   starred_expression ::= expression | (starred_item ",")* '
-              '[starred_item]\n'
-              '   starred_item       ::= assignment_expression | "*" or_expr\n'
+              '   yield_list               ::= expression_list | '
+              'starred_expression "," [starred_expression_list]\n'
               '\n'
               'Except when part of a list or set display, an expression list\n'
               'containing at least one comma yields a tuple.  The length of '
@@ -6520,6 +6657,10 @@
               'Added in version 3.5: Iterable unpacking in expression lists,\n'
               'originally proposed by **PEP 448**.\n'
               '\n'
+              'Added in version 3.11: Any item in an expression list may be '
+              'starred.\n'
+              'See **PEP 646**.\n'
+              '\n'
               'A trailing comma is required only to create a one-item tuple, '
               'such as\n'
               '"1,"; it is optional in all other cases. A single expression '
@@ -6529,10 +6670,10 @@
               'that expression. (To create an empty tuple, use an empty pair '
               'of\n'
               'parentheses: "()".)\n',
- 'floating': 'Floating point literals\n'
+ 'floating': 'Floating-point literals\n'
              '***********************\n'
              '\n'
-             'Floating point literals are described by the following lexical\n'
+             'Floating-point literals are described by the following lexical\n'
              'definitions:\n'
              '\n'
              '   floatnumber   ::= pointfloat | exponentfloat\n'
@@ -6546,12 +6687,12 @@
              'using\n'
              'radix 10. For example, "077e010" is legal, and denotes the same '
              'number\n'
-             'as "77e10". The allowed range of floating point literals is\n'
+             'as "77e10". The allowed range of floating-point literals is\n'
              'implementation-dependent.  As in integer literals, underscores '
              'are\n'
              'supported for digit grouping.\n'
              '\n'
-             'Some examples of floating point literals:\n'
+             'Some examples of floating-point literals:\n'
              '\n'
              '   3.14    10.    .001    1e100    3.14e-10    0e0    '
              '3.14_15_93\n'
@@ -6848,10 +6989,12 @@
                   'printing fields   |\n'
                   '|           | in the form ‘+000000120’. This alignment '
                   'option is only    |\n'
-                  '|           | valid for numeric types.  It becomes the '
-                  'default for       |\n'
-                  '|           | numbers when ‘0’ immediately precedes the '
-                  'field width.     |\n'
+                  '|           | valid for numeric types, excluding "complex". '
+                  'It becomes   |\n'
+                  '|           | the default for numbers when ‘0’ immediately '
+                  'precedes the  |\n'
+                  '|           | field '
+                  'width.                                               |\n'
                   '+-----------+------------------------------------------------------------+\n'
                   '| "\'^\'"     | Forces the field to be centered within the '
                   'available       |\n'
@@ -6934,7 +7077,7 @@
                   '\n'
                   'The "\'_\'" option signals the use of an underscore for a '
                   'thousands\n'
-                  'separator for floating point presentation types and for '
+                  'separator for floating-point presentation types and for '
                   'integer\n'
                   'presentation type "\'d\'".  For integer presentation types '
                   '"\'b\'", "\'o\'",\n'
@@ -6958,9 +7101,9 @@
                   'field by a\n'
                   'zero ("\'0\'") character enables sign-aware zero-padding '
                   'for numeric\n'
-                  'types.  This is equivalent to a *fill* character of "\'0\'" '
-                  'with an\n'
-                  '*alignment* type of "\'=\'".\n'
+                  'types, excluding "complex".  This is equivalent to a *fill* '
+                  'character\n'
+                  'of "\'0\'" with an *alignment* type of "\'=\'".\n'
                   '\n'
                   'Changed in version 3.10: Preceding the *width* field by '
                   '"\'0\'" no\n'
@@ -7061,11 +7204,11 @@
                   '\n'
                   'In addition to the above presentation types, integers can '
                   'be formatted\n'
-                  'with the floating point presentation types listed below '
+                  'with the floating-point presentation types listed below '
                   '(except "\'n\'"\n'
                   'and "None"). When doing so, "float()" is used to convert '
                   'the integer\n'
-                  'to a floating point number before formatting.\n'
+                  'to a floating-point number before formatting.\n'
                   '\n'
                   'The available presentation types for "float" and "Decimal" '
                   'values are:\n'
@@ -7091,12 +7234,10 @@
                   'of "6" digits    |\n'
                   '   |           | after the decimal point for "float", and '
                   'shows all         |\n'
-                  '   |           | coefficient digits for "Decimal". If no '
-                  'digits follow the  |\n'
-                  '   |           | decimal point, the decimal point is also '
-                  'removed unless    |\n'
-                  '   |           | the "#" option is '
-                  'used.                                    |\n'
+                  '   |           | coefficient digits for "Decimal".  If '
+                  '"p=0", the decimal   |\n'
+                  '   |           | point is omitted unless the "#" option is '
+                  'used.            |\n'
                   '   '
                   '+-----------+------------------------------------------------------------+\n'
                   '   | "\'E\'"     | Scientific notation. Same as "\'e\'" '
@@ -7115,12 +7256,10 @@
                   'decimal point for      |\n'
                   '   |           | "float", and uses a precision large enough '
                   'to show all     |\n'
-                  '   |           | coefficient digits for "Decimal". If no '
-                  'digits follow the  |\n'
-                  '   |           | decimal point, the decimal point is also '
-                  'removed unless    |\n'
-                  '   |           | the "#" option is '
-                  'used.                                    |\n'
+                  '   |           | coefficient digits for "Decimal".  If '
+                  '"p=0", the decimal   |\n'
+                  '   |           | point is omitted unless the "#" option is '
+                  'used.            |\n'
                   '   '
                   '+-----------+------------------------------------------------------------+\n'
                   '   | "\'F\'"     | Fixed-point notation. Same as "\'f\'", '
@@ -7205,18 +7344,22 @@
                   'percent sign.          |\n'
                   '   '
                   '+-----------+------------------------------------------------------------+\n'
-                  '   | None      | For "float" this is the same as "\'g\'", '
-                  'except that when    |\n'
-                  '   |           | fixed-point notation is used to format the '
-                  'result, it      |\n'
+                  '   | None      | For "float" this is like the "\'g\'" type, '
+                  'except that when  |\n'
+                  '   |           | fixed- point notation is used to format '
+                  'the result, it     |\n'
                   '   |           | always includes at least one digit past '
-                  'the decimal point. |\n'
-                  '   |           | The precision used is as large as needed '
-                  'to represent the  |\n'
-                  '   |           | given value faithfully.  For "Decimal", '
-                  'this is the same   |\n'
-                  '   |           | as either "\'g\'" or "\'G\'" depending on '
-                  'the value of         |\n'
+                  'the decimal point, |\n'
+                  '   |           | and switches to the scientific notation '
+                  'when "exp >= p -   |\n'
+                  '   |           | 1".  When the precision is not specified, '
+                  'the latter will  |\n'
+                  '   |           | be as large as needed to represent the '
+                  'given value         |\n'
+                  '   |           | faithfully.  For "Decimal", this is the '
+                  'same as either     |\n'
+                  '   |           | "\'g\'" or "\'G\'" depending on the value '
+                  'of                   |\n'
                   '   |           | "context.capitals" for the current decimal '
                   'context.  The   |\n'
                   '   |           | overall effect is to match the output of '
@@ -7226,6 +7369,32 @@
                   '   '
                   '+-----------+------------------------------------------------------------+\n'
                   '\n'
+                  'The result should be correctly rounded to a given precision '
+                  '"p" of\n'
+                  'digits after the decimal point.  The rounding mode for '
+                  '"float" matches\n'
+                  'that of the "round()" builtin.  For "Decimal", the rounding '
+                  'mode of\n'
+                  'the current context will be used.\n'
+                  '\n'
+                  'The available presentation types for "complex" are the same '
+                  'as those\n'
+                  'for "float" ("\'%\'" is not allowed).  Both the real and '
+                  'imaginary\n'
+                  'components of a complex number are formatted as '
+                  'floating-point\n'
+                  'numbers, according to the specified presentation type.  '
+                  'They are\n'
+                  'separated by the mandatory sign of the imaginary part, the '
+                  'latter\n'
+                  'being terminated by a "j" suffix.  If the presentation type '
+                  'is\n'
+                  'missing, the result will match the output of "str()" '
+                  '(complex numbers\n'
+                  'with a non-zero real part are also surrounded by '
+                  'parentheses),\n'
+                  'possibly altered by other format modifiers.\n'
+                  '\n'
                   '\n'
                   'Format examples\n'
                   '===============\n'
@@ -7406,10 +7575,12 @@
              '   parameter_list_no_posonly ::= defparameter ("," '
              'defparameter)* ["," [parameter_list_starargs]]\n'
              '                                 | parameter_list_starargs\n'
-             '   parameter_list_starargs   ::= "*" [parameter] ("," '
+             '   parameter_list_starargs   ::= "*" [star_parameter] ("," '
              'defparameter)* ["," ["**" parameter [","]]]\n'
              '                               | "**" parameter [","]\n'
              '   parameter                 ::= identifier [":" expression]\n'
+             '   star_parameter            ::= identifier [":" ["*"] '
+             'expression]\n'
              '   defparameter              ::= parameter ["=" expression]\n'
              '   funcname                  ::= identifier\n'
              '\n'
@@ -7537,27 +7708,31 @@
              'expression"”\n'
              'following the parameter name.  Any parameter may have an '
              'annotation,\n'
-             'even those of the form "*identifier" or "**identifier".  '
-             'Functions may\n'
-             'have “return” annotation of the form “"-> expression"” after '
-             'the\n'
-             'parameter list.  These annotations can be any valid Python '
-             'expression.\n'
-             'The presence of annotations does not change the semantics of a\n'
-             'function.  The annotation values are available as values of a\n'
-             'dictionary keyed by the parameters’ names in the '
-             '"__annotations__"\n'
-             'attribute of the function object.  If the "annotations" import '
-             'from\n'
-             '"__future__" is used, annotations are preserved as strings at '
-             'runtime\n'
-             'which enables postponed evaluation.  Otherwise, they are '
-             'evaluated\n'
-             'when the function definition is executed.  In this case '
-             'annotations\n'
-             'may be evaluated in a different order than they appear in the '
-             'source\n'
-             'code.\n'
+             'even those of the form "*identifier" or "**identifier". (As a '
+             'special\n'
+             'case, parameters of the form "*identifier" may have an '
+             'annotation “":\n'
+             '*expression"”.) Functions may have “return” annotation of the '
+             'form\n'
+             '“"-> expression"” after the parameter list.  These annotations '
+             'can be\n'
+             'any valid Python expression.  The presence of annotations does '
+             'not\n'
+             'change the semantics of a function.  The annotation values are\n'
+             'available as values of a dictionary keyed by the parameters’ '
+             'names in\n'
+             'the "__annotations__" attribute of the function object.  If the\n'
+             '"annotations" import from "__future__" is used, annotations are\n'
+             'preserved as strings at runtime which enables postponed '
+             'evaluation.\n'
+             'Otherwise, they are evaluated when the function definition is\n'
+             'executed.  In this case annotations may be evaluated in a '
+             'different\n'
+             'order than they appear in the source code.\n'
+             '\n'
+             'Changed in version 3.11: Parameters of the form “"*identifier"” '
+             'may\n'
+             'have an annotation “": *expression"”. See **PEP 646**.\n'
              '\n'
              'It is also possible to create anonymous functions (functions not '
              'bound\n'
@@ -7613,33 +7788,17 @@
            '\n'
            '   global_stmt ::= "global" identifier ("," identifier)*\n'
            '\n'
-           'The "global" statement is a declaration which holds for the '
-           'entire\n'
-           'current code block.  It means that the listed identifiers are to '
-           'be\n'
-           'interpreted as globals.  It would be impossible to assign to a '
-           'global\n'
-           'variable without "global", although free variables may refer to\n'
-           'globals without being declared global.\n'
+           'The "global" statement causes the listed identifiers to be '
+           'interpreted\n'
+           'as globals. It would be impossible to assign to a global variable\n'
+           'without "global", although free variables may refer to globals '
+           'without\n'
+           'being declared global.\n'
            '\n'
-           'Names listed in a "global" statement must not be used in the same '
-           'code\n'
-           'block textually preceding that "global" statement.\n'
-           '\n'
-           'Names listed in a "global" statement must not be defined as '
-           'formal\n'
-           'parameters, or as targets in "with" statements or "except" '
-           'clauses, or\n'
-           'in a "for" target list, "class" definition, function definition,\n'
-           '"import" statement, or variable annotation.\n'
-           '\n'
-           '**CPython implementation detail:** The current implementation does '
-           'not\n'
-           'enforce some of these restrictions, but programs should not abuse '
-           'this\n'
-           'freedom, as future implementations may enforce them or silently '
-           'change\n'
-           'the meaning of the program.\n'
+           'The "global" statement applies to the entire scope of a function '
+           'or\n'
+           'class body. A "SyntaxError" is raised if a variable is used or\n'
+           'assigned to prior to its global declaration in the scope.\n'
            '\n'
            '**Programmer’s note:** "global" is a directive to the parser.  It\n'
            'applies only to code parsed at the same time as the "global"\n'
@@ -7726,19 +7885,16 @@
                 '\n'
                 'Within the ASCII range (U+0001..U+007F), the valid characters '
                 'for\n'
-                'identifiers are the same as in Python 2.x: the uppercase and '
-                'lowercase\n'
-                'letters "A" through "Z", the underscore "_" and, except for '
-                'the first\n'
-                'character, the digits "0" through "9".\n'
-                '\n'
-                'Python 3.0 introduces additional characters from outside the '
-                'ASCII\n'
-                'range (see **PEP 3131**).  For these characters, the '
-                'classification\n'
-                'uses the version of the Unicode Character Database as '
-                'included in the\n'
-                '"unicodedata" module.\n'
+                'identifiers include the uppercase and lowercase letters "A" '
+                'through\n'
+                '"Z", the underscore "_" and, except for the first character, '
+                'the\n'
+                'digits "0" through "9". Python 3.0 introduced additional '
+                'characters\n'
+                'from outside the ASCII range (see **PEP 3131**).  For these\n'
+                'characters, the classification uses the version of the '
+                'Unicode\n'
+                'Character Database as included in the "unicodedata" module.\n'
                 '\n'
                 'Identifiers are unlimited in length.  Case is significant.\n'
                 '\n'
@@ -7923,11 +8079,11 @@
               '\n'
               'An imaginary literal yields a complex number with a real part '
               'of 0.0.\n'
-              'Complex numbers are represented as a pair of floating point '
+              'Complex numbers are represented as a pair of floating-point '
               'numbers\n'
               'and have the same restrictions on their range.  To create a '
               'complex\n'
-              'number with a nonzero real part, add a floating point number to '
+              'number with a nonzero real part, add a floating-point number to '
               'it,\n'
               'e.g., "(3+4j)".  Some examples of imaginary literals:\n'
               '\n'
@@ -8313,7 +8469,8 @@
           'in\n'
           'square brackets:\n'
           '\n'
-          '   list_display ::= "[" [starred_list | comprehension] "]"\n'
+          '   list_display ::= "[" [flexible_expression_list | comprehension] '
+          '"]"\n'
           '\n'
           'A list display yields a new list object, the contents being '
           'specified\n'
@@ -8564,11 +8721,9 @@
            '  can introduce new names.\n'
            '\n'
            '* While annotation scopes have an internal name, that name is not\n'
-           '  reflected in the *__qualname__* of objects defined within the '
-           'scope.\n'
-           '  Instead, the "__qualname__" of such objects is as if the object '
-           'were\n'
-           '  defined in the enclosing scope.\n'
+           '  reflected in the *qualified name* of objects defined within the\n'
+           '  scope. Instead, the "__qualname__" of such objects is as if the\n'
+           '  object were defined in the enclosing scope.\n'
            '\n'
            'Added in version 3.12: Annotation scopes were introduced in '
            'Python\n'
@@ -8706,8 +8861,8 @@
              'scope,\n'
              'or if there is no nonlocal scope, a "SyntaxError" is raised.\n'
              '\n'
-             'The nonlocal statement applies to the entire scope of a function '
-             'or\n'
+             'The "nonlocal" statement applies to the entire scope of a '
+             'function or\n'
              'class body. A "SyntaxError" is raised if a variable is used or\n'
              'assigned to prior to its nonlocal declaration in the scope.\n'
              '\n'
@@ -8724,8 +8879,8 @@
  'numbers': 'Numeric literals\n'
             '****************\n'
             '\n'
-            'There are three types of numeric literals: integers, floating '
-            'point\n'
+            'There are three types of numeric literals: integers, '
+            'floating-point\n'
             'numbers, and imaginary numbers.  There are no complex literals\n'
             '(complex numbers can be formed by adding a real number and an\n'
             'imaginary number).\n'
@@ -9057,16 +9212,22 @@
             'types, operations that compute new values may actually return a\n'
             'reference to any existing object with the same type and value, '
             'while\n'
-            'for mutable objects this is not allowed.  E.g., after "a = 1; b = '
-            '1",\n'
-            '"a" and "b" may or may not refer to the same object with the '
-            'value\n'
-            'one, depending on the implementation, but after "c = []; d = []", '
-            '"c"\n'
-            'and "d" are guaranteed to refer to two different, unique, newly\n'
-            'created empty lists. (Note that "c = d = []" assigns the same '
-            'object\n'
-            'to both "c" and "d".)\n',
+            'for mutable objects this is not allowed. For example, after "a = '
+            '1; b\n'
+            '= 1", *a* and *b* may or may not refer to the same object with '
+            'the\n'
+            'value one, depending on the implementation. This is because "int" '
+            'is\n'
+            'an immutable type, so the reference to "1" can be reused. This\n'
+            'behaviour depends on the implementation used, so should not be '
+            'relied\n'
+            'upon, but is something to be aware of when making use of object\n'
+            'identity tests. However, after "c = []; d = []", *c* and *d* are\n'
+            'guaranteed to refer to two different, unique, newly created '
+            'empty\n'
+            'lists. (Note that "e = f = []" assigns the *same* object to both '
+            '*e*\n'
+            'and *f*.)\n',
  'operator-summary': 'Operator precedence\n'
                      '*******************\n'
                      '\n'
@@ -9295,8 +9456,8 @@
           '"complex"\n'
           'number. (In earlier versions it raised a "ValueError".)\n'
           '\n'
-          'This operation can be customized using the special "__pow__()" '
-          'method.\n',
+          'This operation can be customized using the special "__pow__()" and\n'
+          '"__rpow__()" methods.\n',
  'raise': 'The "raise" statement\n'
           '*********************\n'
           '\n'
@@ -9459,56 +9620,58 @@
                    '\n'
                    'The following methods can be defined to implement '
                    'container objects.\n'
-                   'Containers usually are *sequences* (such as "lists" or '
-                   '"tuples") or\n'
-                   '*mappings* (like "dictionaries"), but can represent other '
-                   'containers\n'
-                   'as well.  The first set of methods is used either to '
-                   'emulate a\n'
-                   'sequence or to emulate a mapping; the difference is that '
-                   'for a\n'
-                   'sequence, the allowable keys should be the integers *k* '
-                   'for which "0\n'
-                   '<= k < N" where *N* is the length of the sequence, or '
-                   '"slice" objects,\n'
-                   'which define a range of items.  It is also recommended '
-                   'that mappings\n'
-                   'provide the methods "keys()", "values()", "items()", '
-                   '"get()",\n'
-                   '"clear()", "setdefault()", "pop()", "popitem()", "copy()", '
+                   'None of them are provided by the "object" class itself. '
+                   'Containers\n'
+                   'usually are *sequences* (such as "lists" or "tuples") or '
+                   '*mappings*\n'
+                   '(like *dictionaries*), but can represent other containers '
+                   'as well.\n'
+                   'The first set of methods is used either to emulate a '
+                   'sequence or to\n'
+                   'emulate a mapping; the difference is that for a sequence, '
+                   'the\n'
+                   'allowable keys should be the integers *k* for which "0 <= '
+                   'k < N" where\n'
+                   '*N* is the length of the sequence, or "slice" objects, '
+                   'which define a\n'
+                   'range of items.  It is also recommended that mappings '
+                   'provide the\n'
+                   'methods "keys()", "values()", "items()", "get()", '
+                   '"clear()",\n'
+                   '"setdefault()", "pop()", "popitem()", "copy()", and '
+                   '"update()"\n'
+                   'behaving similar to those for Python’s standard '
+                   '"dictionary" objects.\n'
+                   'The "collections.abc" module provides a "MutableMapping" '
+                   '*abstract\n'
+                   'base class* to help create those methods from a base set '
+                   'of\n'
+                   '"__getitem__()", "__setitem__()", "__delitem__()", and '
+                   '"keys()".\n'
+                   'Mutable sequences should provide methods "append()", '
+                   '"count()",\n'
+                   '"index()", "extend()", "insert()", "pop()", "remove()", '
+                   '"reverse()"\n'
+                   'and "sort()", like Python standard "list" objects. '
+                   'Finally, sequence\n'
+                   'types should implement addition (meaning concatenation) '
                    'and\n'
-                   '"update()" behaving similar to those for Python’s '
-                   'standard\n'
-                   '"dictionary" objects.  The "collections.abc" module '
-                   'provides a\n'
-                   '"MutableMapping" *abstract base class* to help create '
-                   'those methods\n'
-                   'from a base set of "__getitem__()", "__setitem__()", '
-                   '"__delitem__()",\n'
-                   'and "keys()". Mutable sequences should provide methods '
-                   '"append()",\n'
-                   '"count()", "index()", "extend()", "insert()", "pop()", '
-                   '"remove()",\n'
-                   '"reverse()" and "sort()", like Python standard "list" '
-                   'objects.\n'
-                   'Finally, sequence types should implement addition '
-                   '(meaning\n'
-                   'concatenation) and multiplication (meaning repetition) by '
-                   'defining the\n'
-                   'methods "__add__()", "__radd__()", "__iadd__()", '
-                   '"__mul__()",\n'
-                   '"__rmul__()" and "__imul__()" described below; they should '
-                   'not define\n'
-                   'other numerical operators.  It is recommended that both '
-                   'mappings and\n'
-                   'sequences implement the "__contains__()" method to allow '
-                   'efficient use\n'
-                   'of the "in" operator; for mappings, "in" should search the '
-                   'mapping’s\n'
-                   'keys; for sequences, it should search through the values.  '
-                   'It is\n'
-                   'further recommended that both mappings and sequences '
-                   'implement the\n'
+                   'multiplication (meaning repetition) by defining the '
+                   'methods\n'
+                   '"__add__()", "__radd__()", "__iadd__()", "__mul__()", '
+                   '"__rmul__()" and\n'
+                   '"__imul__()" described below; they should not define other '
+                   'numerical\n'
+                   'operators.  It is recommended that both mappings and '
+                   'sequences\n'
+                   'implement the "__contains__()" method to allow efficient '
+                   'use of the\n'
+                   '"in" operator; for mappings, "in" should search the '
+                   'mapping’s keys;\n'
+                   'for sequences, it should search through the values.  It is '
+                   'further\n'
+                   'recommended that both mappings and sequences implement '
+                   'the\n'
                    '"__iter__()" method to allow efficient iteration through '
                    'the\n'
                    'container; for mappings, "__iter__()" should iterate '
@@ -9710,9 +9873,12 @@
              'the\n'
              'second argument.\n'
              '\n'
-             'This operation can be customized using the special '
-             '"__lshift__()" and\n'
-             '"__rshift__()" methods.\n'
+             'The left shift operation can be customized using the special\n'
+             '"__lshift__()" and "__rlshift__()" methods. The right shift '
+             'operation\n'
+             'can be customized using the special "__rshift__()" and '
+             '"__rrshift__()"\n'
+             'methods.\n'
              '\n'
              'A right shift by *n* bits is defined as floor division by '
              '"pow(2,n)".\n'
@@ -9778,20 +9944,6 @@
                  'not reported\n'
                  'by the "dir()" built-in function.\n'
                  '\n'
-                 'object.__dict__\n'
-                 '\n'
-                 '   A dictionary or other mapping object used to store an '
-                 'object’s\n'
-                 '   (writable) attributes.\n'
-                 '\n'
-                 'instance.__class__\n'
-                 '\n'
-                 '   The class to which a class instance belongs.\n'
-                 '\n'
-                 'class.__bases__\n'
-                 '\n'
-                 '   The tuple of base classes of a class object.\n'
-                 '\n'
                  'definition.__name__\n'
                  '\n'
                  '   The name of the class, function, method, descriptor, or '
@@ -9806,47 +9958,26 @@
                  '\n'
                  '   Added in version 3.3.\n'
                  '\n'
-                 'definition.__type_params__\n'
-                 '\n'
-                 '   The type parameters of generic classes, functions, and '
-                 'type\n'
-                 '   aliases.\n'
-                 '\n'
-                 '   Added in version 3.12.\n'
-                 '\n'
-                 'class.__mro__\n'
+                 'definition.__module__\n'
                  '\n'
-                 '   This attribute is a tuple of classes that are considered '
-                 'when\n'
-                 '   looking for base classes during method resolution.\n'
-                 '\n'
-                 'class.mro()\n'
+                 '   The name of the module in which a class or function was '
+                 'defined.\n'
                  '\n'
-                 '   This method can be overridden by a metaclass to customize '
-                 'the\n'
-                 '   method resolution order for its instances.  It is called '
-                 'at class\n'
-                 '   instantiation, and its result is stored in "__mro__".\n'
+                 'definition.__doc__\n'
                  '\n'
-                 'class.__subclasses__()\n'
-                 '\n'
-                 '   Each class keeps a list of weak references to its '
-                 'immediate\n'
-                 '   subclasses.  This method returns a list of all those '
-                 'references\n'
-                 '   still alive.  The list is in definition order.  Example:\n'
+                 '   The documentation string of a class or function, or '
+                 '"None" if\n'
+                 '   undefined.\n'
                  '\n'
-                 '      >>> int.__subclasses__()\n'
-                 "      [<class 'bool'>, <enum 'IntEnum'>, <flag 'IntFlag'>, "
-                 "<class 're._constants._NamedIntConstant'>]\n"
-                 '\n'
-                 'class.__static_attributes__\n'
+                 'definition.__type_params__\n'
                  '\n'
-                 '   A tuple containing names of attributes of this class '
-                 'which are\n'
-                 '   accessed through "self.X" from any function in its body.\n'
+                 '   The type parameters of generic classes, functions, and '
+                 'type\n'
+                 '   aliases. For classes and functions that are not generic, '
+                 'this will\n'
+                 '   be an empty tuple.\n'
                  '\n'
-                 '   Added in version 3.13.\n',
+                 '   Added in version 3.12.\n',
  'specialnames': 'Special method names\n'
                  '********************\n'
                  '\n'
@@ -9990,6 +10121,10 @@
                  '   It is not guaranteed that "__del__()" methods are called '
                  'for\n'
                  '   objects that still exist when the interpreter exits.\n'
+                 '   "weakref.finalize" provides a straightforward way to '
+                 'register a\n'
+                 '   cleanup function to be called when an object is garbage '
+                 'collected.\n'
                  '\n'
                  '   Note:\n'
                  '\n'
@@ -10076,17 +10211,19 @@
                  '\n'
                  '   This is typically used for debugging, so it is important '
                  'that the\n'
-                 '   representation is information-rich and unambiguous.\n'
+                 '   representation is information-rich and unambiguous. A '
+                 'default\n'
+                 '   implementation is provided by the "object" class itself.\n'
                  '\n'
                  'object.__str__(self)\n'
                  '\n'
-                 '   Called by "str(object)" and the built-in functions '
-                 '"format()" and\n'
-                 '   "print()" to compute the “informal” or nicely printable '
-                 'string\n'
-                 '   representation of an object.  The return value must be a '
-                 'string\n'
-                 '   object.\n'
+                 '   Called by "str(object)", the default "__format__()" '
+                 'implementation,\n'
+                 '   and the built-in function "print()", to compute the '
+                 '“informal” or\n'
+                 '   nicely printable string representation of an object.  The '
+                 'return\n'
+                 '   value must be a str object.\n'
                  '\n'
                  '   This method differs from "object.__repr__()" in that '
                  'there is no\n'
@@ -10102,7 +10239,9 @@
                  '\n'
                  '   Called by bytes to compute a byte-string representation '
                  'of an\n'
-                 '   object. This should return a "bytes" object.\n'
+                 '   object. This should return a "bytes" object. The "object" '
+                 'class\n'
+                 '   itself does not provide this method.\n'
                  '\n'
                  'object.__format__(self, format_spec)\n'
                  '\n'
@@ -10130,6 +10269,10 @@
                  '\n'
                  '   The return value must be a string object.\n'
                  '\n'
+                 '   The default implementation by the "object" class should '
+                 'be given an\n'
+                 '   empty *format_spec* string. It delegates to "__str__()".\n'
+                 '\n'
                  '   Changed in version 3.4: The __format__ method of "object" '
                  'itself\n'
                  '   raises a "TypeError" if passed any non-empty string.\n'
@@ -10187,6 +10330,16 @@
                  '   ordering operations from a single root operation, see\n'
                  '   "functools.total_ordering()".\n'
                  '\n'
+                 '   By default, the "object" class provides implementations '
+                 'consistent\n'
+                 '   with Value comparisons: equality compares according to '
+                 'object\n'
+                 '   identity, and order comparisons raise "TypeError". Each '
+                 'default\n'
+                 '   method may generate these results directly, but may also '
+                 'return\n'
+                 '   "NotImplemented".\n'
+                 '\n'
                  '   See the paragraph on "__hash__()" for some important '
                  'notes on\n'
                  '   creating *hashable* objects which support custom '
@@ -10272,12 +10425,13 @@
                  '\n'
                  '   User-defined classes have "__eq__()" and "__hash__()" '
                  'methods by\n'
-                 '   default; with them, all objects compare unequal (except '
-                 'with\n'
-                 '   themselves) and "x.__hash__()" returns an appropriate '
-                 'value such\n'
-                 '   that "x == y" implies both that "x is y" and "hash(x) == '
-                 'hash(y)".\n'
+                 '   default (inherited from the "object" class); with them, '
+                 'all objects\n'
+                 '   compare unequal (except with themselves) and '
+                 '"x.__hash__()" returns\n'
+                 '   an appropriate value such that "x == y" implies both that '
+                 '"x is y"\n'
+                 '   and "hash(x) == hash(y)".\n'
                  '\n'
                  '   A class that overrides "__eq__()" and does not define '
                  '"__hash__()"\n'
@@ -10346,9 +10500,9 @@
                  'object is\n'
                  '   considered true if its result is nonzero.  If a class '
                  'defines\n'
-                 '   neither "__len__()" nor "__bool__()", all its instances '
-                 'are\n'
-                 '   considered true.\n'
+                 '   neither "__len__()" nor "__bool__()" (which is true of '
+                 'the "object"\n'
+                 '   class itself), all its instances are considered true.\n'
                  '\n'
                  '\n'
                  'Customizing attribute access\n'
@@ -10372,7 +10526,8 @@
                  'either\n'
                  '   return the (computed) attribute value or raise an '
                  '"AttributeError"\n'
-                 '   exception.\n'
+                 '   exception. The "object" class itself does not provide '
+                 'this method.\n'
                  '\n'
                  '   Note that if the attribute is found through the normal '
                  'mechanism,\n'
@@ -10552,7 +10707,9 @@
                  'parents).  In the\n'
                  'examples below, “the attribute” refers to the attribute '
                  'whose name is\n'
-                 'the key of the property in the owner class’ "__dict__".\n'
+                 'the key of the property in the owner class’ "__dict__".  The '
+                 '"object"\n'
+                 'class itself does not implement any of these protocols.\n'
                  '\n'
                  'object.__get__(self, instance, owner=None)\n'
                  '\n'
@@ -10788,11 +10945,13 @@
                  'the class\n'
                  '  where it is defined.  *__slots__* declared in parents are '
                  'available\n'
-                 '  in child classes. However, child subclasses will get a '
-                 '"__dict__"\n'
-                 '  and *__weakref__* unless they also define *__slots__* '
-                 '(which should\n'
-                 '  only contain names of any *additional* slots).\n'
+                 '  in child classes. However, instances of a child subclass '
+                 'will get a\n'
+                 '  "__dict__" and *__weakref__* unless the subclass also '
+                 'defines\n'
+                 '  *__slots__* (which should only contain names of any '
+                 '*additional*\n'
+                 '  slots).\n'
                  '\n'
                  '* If a class defines a slot also defined in a base class, '
                  'the instance\n'
@@ -11209,7 +11368,7 @@
                  'built-in\n'
                  'types), including other ABCs.\n'
                  '\n'
-                 'class.__instancecheck__(self, instance)\n'
+                 'type.__instancecheck__(self, instance)\n'
                  '\n'
                  '   Return true if *instance* should be considered a (direct '
                  'or\n'
@@ -11217,7 +11376,7 @@
                  'implement\n'
                  '   "isinstance(instance, class)".\n'
                  '\n'
-                 'class.__subclasscheck__(self, subclass)\n'
+                 'type.__subclasscheck__(self, subclass)\n'
                  '\n'
                  '   Return true if *subclass* should be considered a (direct '
                  'or\n'
@@ -11433,7 +11592,9 @@
                  '   Called when the instance is “called” as a function; if '
                  'this method\n'
                  '   is defined, "x(arg1, arg2, ...)" roughly translates to\n'
-                 '   "type(x).__call__(x, arg1, ...)".\n'
+                 '   "type(x).__call__(x, arg1, ...)". The "object" class '
+                 'itself does\n'
+                 '   not provide this method.\n'
                  '\n'
                  '\n'
                  'Emulating container types\n'
@@ -11441,54 +11602,54 @@
                  '\n'
                  'The following methods can be defined to implement container '
                  'objects.\n'
-                 'Containers usually are *sequences* (such as "lists" or '
-                 '"tuples") or\n'
-                 '*mappings* (like "dictionaries"), but can represent other '
-                 'containers\n'
-                 'as well.  The first set of methods is used either to emulate '
-                 'a\n'
-                 'sequence or to emulate a mapping; the difference is that for '
-                 'a\n'
-                 'sequence, the allowable keys should be the integers *k* for '
-                 'which "0\n'
-                 '<= k < N" where *N* is the length of the sequence, or '
-                 '"slice" objects,\n'
-                 'which define a range of items.  It is also recommended that '
-                 'mappings\n'
-                 'provide the methods "keys()", "values()", "items()", '
-                 '"get()",\n'
-                 '"clear()", "setdefault()", "pop()", "popitem()", "copy()", '
-                 'and\n'
-                 '"update()" behaving similar to those for Python’s standard\n'
-                 '"dictionary" objects.  The "collections.abc" module provides '
-                 'a\n'
-                 '"MutableMapping" *abstract base class* to help create those '
-                 'methods\n'
-                 'from a base set of "__getitem__()", "__setitem__()", '
-                 '"__delitem__()",\n'
-                 'and "keys()". Mutable sequences should provide methods '
-                 '"append()",\n'
-                 '"count()", "index()", "extend()", "insert()", "pop()", '
-                 '"remove()",\n'
-                 '"reverse()" and "sort()", like Python standard "list" '
+                 'None of them are provided by the "object" class itself. '
+                 'Containers\n'
+                 'usually are *sequences* (such as "lists" or "tuples") or '
+                 '*mappings*\n'
+                 '(like *dictionaries*), but can represent other containers as '
+                 'well.\n'
+                 'The first set of methods is used either to emulate a '
+                 'sequence or to\n'
+                 'emulate a mapping; the difference is that for a sequence, '
+                 'the\n'
+                 'allowable keys should be the integers *k* for which "0 <= k '
+                 '< N" where\n'
+                 '*N* is the length of the sequence, or "slice" objects, which '
+                 'define a\n'
+                 'range of items.  It is also recommended that mappings '
+                 'provide the\n'
+                 'methods "keys()", "values()", "items()", "get()", '
+                 '"clear()",\n'
+                 '"setdefault()", "pop()", "popitem()", "copy()", and '
+                 '"update()"\n'
+                 'behaving similar to those for Python’s standard "dictionary" '
                  'objects.\n'
-                 'Finally, sequence types should implement addition (meaning\n'
-                 'concatenation) and multiplication (meaning repetition) by '
-                 'defining the\n'
-                 'methods "__add__()", "__radd__()", "__iadd__()", '
-                 '"__mul__()",\n'
-                 '"__rmul__()" and "__imul__()" described below; they should '
-                 'not define\n'
-                 'other numerical operators.  It is recommended that both '
-                 'mappings and\n'
-                 'sequences implement the "__contains__()" method to allow '
-                 'efficient use\n'
-                 'of the "in" operator; for mappings, "in" should search the '
-                 'mapping’s\n'
-                 'keys; for sequences, it should search through the values.  '
-                 'It is\n'
-                 'further recommended that both mappings and sequences '
-                 'implement the\n'
+                 'The "collections.abc" module provides a "MutableMapping" '
+                 '*abstract\n'
+                 'base class* to help create those methods from a base set of\n'
+                 '"__getitem__()", "__setitem__()", "__delitem__()", and '
+                 '"keys()".\n'
+                 'Mutable sequences should provide methods "append()", '
+                 '"count()",\n'
+                 '"index()", "extend()", "insert()", "pop()", "remove()", '
+                 '"reverse()"\n'
+                 'and "sort()", like Python standard "list" objects. Finally, '
+                 'sequence\n'
+                 'types should implement addition (meaning concatenation) and\n'
+                 'multiplication (meaning repetition) by defining the methods\n'
+                 '"__add__()", "__radd__()", "__iadd__()", "__mul__()", '
+                 '"__rmul__()" and\n'
+                 '"__imul__()" described below; they should not define other '
+                 'numerical\n'
+                 'operators.  It is recommended that both mappings and '
+                 'sequences\n'
+                 'implement the "__contains__()" method to allow efficient use '
+                 'of the\n'
+                 '"in" operator; for mappings, "in" should search the '
+                 'mapping’s keys;\n'
+                 'for sequences, it should search through the values.  It is '
+                 'further\n'
+                 'recommended that both mappings and sequences implement the\n'
                  '"__iter__()" method to allow efficient iteration through '
                  'the\n'
                  'container; for mappings, "__iter__()" should iterate through '
@@ -11904,6 +12065,9 @@
                  '\n'
                  'For more information on context managers, see Context '
                  'Manager Types.\n'
+                 'The "object" class itself does not provide the context '
+                 'manager\n'
+                 'methods.\n'
                  '\n'
                  'object.__enter__(self)\n'
                  '\n'
@@ -12362,7 +12526,7 @@
                    'the\n'
                    '   "LC_NUMERIC" locale in some cases.\n'
                    '\n'
-                   'str.format_map(mapping)\n'
+                   'str.format_map(mapping, /)\n'
                    '\n'
                    '   Similar to "str.format(**mapping)", except that '
                    '"mapping" is used\n'
@@ -12790,11 +12954,11 @@
                    '   and are deemed to delimit empty strings (for example,\n'
                    '   "\'1,,2\'.split(\',\')" returns "[\'1\', \'\', '
                    '\'2\']").  The *sep* argument\n'
-                   '   may consist of multiple characters (for example,\n'
-                   '   "\'1<>2<>3\'.split(\'<>\')" returns "[\'1\', \'2\', '
-                   '\'3\']"). Splitting an\n'
-                   '   empty string with a specified separator returns '
-                   '"[\'\']".\n'
+                   '   may consist of multiple characters as a single '
+                   'delimiter (to split\n'
+                   '   with multiple delimiters, use "re.split()"). Splitting '
+                   'an empty\n'
+                   '   string with a specified separator returns "[\'\']".\n'
                    '\n'
                    '   For example:\n'
                    '\n'
@@ -12804,6 +12968,8 @@
                    "      ['1', '2,3']\n"
                    "      >>> '1,2,,3,'.split(',')\n"
                    "      ['1', '2', '', '3', '']\n"
+                   "      >>> '1<>2<>3<4'.split('<>')\n"
+                   "      ['1', '2', '3<4']\n"
                    '\n'
                    '   If *sep* is not specified or is "None", a different '
                    'splitting\n'
@@ -13146,15 +13312,13 @@
             'greater must be expressed with escapes.\n'
             '\n'
             'Both string and bytes literals may optionally be prefixed with a\n'
-            'letter "\'r\'" or "\'R\'"; such strings are called *raw strings* '
-            'and treat\n'
-            'backslashes as literal characters.  As a result, in string '
-            'literals,\n'
-            '"\'\\U\'" and "\'\\u\'" escapes in raw strings are not treated '
-            'specially.\n'
-            'Given that Python 2.x’s raw unicode literals behave differently '
-            'than\n'
-            'Python 3.x’s the "\'ur\'" syntax is not supported.\n'
+            'letter "\'r\'" or "\'R\'"; such constructs are called *raw '
+            'string\n'
+            'literals* and *raw bytes literals* respectively and treat '
+            'backslashes\n'
+            'as literal characters.  As a result, in raw string literals, '
+            '"\'\\U\'"\n'
+            'and "\'\\u\'" escapes are not treated specially.\n'
             '\n'
             'Added in version 3.3: The "\'rb\'" prefix of raw bytes literals '
             'has been\n'
@@ -13345,7 +13509,8 @@
                   '*generic\n'
                   'class* will generally return a GenericAlias object.\n'
                   '\n'
-                  '   subscription ::= primary "[" expression_list "]"\n'
+                  '   subscription ::= primary "[" flexible_expression_list '
+                  '"]"\n'
                   '\n'
                   'When an object is subscripted, the interpreter will '
                   'evaluate the\n'
@@ -13364,13 +13529,18 @@
                   'see\n'
                   '__class_getitem__ versus __getitem__.\n'
                   '\n'
-                  'If the expression list contains at least one comma, it will '
-                  'evaluate\n'
-                  'to a "tuple" containing the items of the expression list. '
-                  'Otherwise,\n'
-                  'the expression list will evaluate to the value of the '
-                  'list’s sole\n'
-                  'member.\n'
+                  'If the expression list contains at least one comma, or if '
+                  'any of the\n'
+                  'expressions are starred, the expression list will evaluate '
+                  'to a\n'
+                  '"tuple" containing the items of the expression list. '
+                  'Otherwise, the\n'
+                  'expression list will evaluate to the value of the list’s '
+                  'sole member.\n'
+                  '\n'
+                  'Changed in version 3.11: Expressions in an expression list '
+                  'may be\n'
+                  'starred. See **PEP 646**.\n'
                   '\n'
                   'For built-in objects, there are two types of objects that '
                   'support\n'
@@ -13484,14 +13654,15 @@
         'clauses in turn until one is found that matches the exception. An\n'
         'expression-less "except" clause, if present, must be last; it '
         'matches\n'
-        'any exception. For an "except" clause with an expression, that\n'
-        'expression is evaluated, and the clause matches the exception if the\n'
-        'resulting object is “compatible” with the exception.  An object is\n'
-        'compatible with an exception if the object is the class or a *non-\n'
-        'virtual base class* of the exception object, or a tuple containing '
-        'an\n'
-        'item that is the class or a non-virtual base class of the exception\n'
-        'object.\n'
+        'any exception.\n'
+        '\n'
+        'For an "except" clause with an expression, the expression must\n'
+        'evaluate to an exception type or a tuple of exception types. The\n'
+        'raised exception matches an "except" clause whose expression '
+        'evaluates\n'
+        'to the class or a *non-virtual base class* of the exception object, '
+        'or\n'
+        'to a tuple that contains such a class.\n'
         '\n'
         'If no "except" clause matches the exception, the search for an\n'
         'exception handler continues in the surrounding code and on the\n'
@@ -13620,12 +13791,13 @@
         '   ...\n'
         "   ExceptionGroup('', (BlockingIOError()))\n"
         '\n'
-        'An "except*" clause must have a matching type, and this type cannot '
-        'be\n'
-        'a subclass of "BaseExceptionGroup". It is not possible to mix '
-        '"except"\n'
-        'and "except*" in the same "try". "break", "continue" and "return"\n'
-        'cannot appear in an "except*" clause.\n'
+        'An "except*" clause must have a matching expression; it cannot be\n'
+        '"except*:". Furthermore, this expression cannot contain exception\n'
+        'group types, because that would have ambiguous semantics.\n'
+        '\n'
+        'It is not possible to mix "except" and "except*" in the same "try".\n'
+        '"break", "continue" and "return" cannot appear in an "except*" '
+        'clause.\n'
         '\n'
         '\n'
         '"else" clause\n'
@@ -13786,7 +13958,7 @@
           '\n'
           '* A sign is shown only when the number is negative.\n'
           '\n'
-          'Python distinguishes between integers, floating point numbers, and\n'
+          'Python distinguishes between integers, floating-point numbers, and\n'
           'complex numbers:\n'
           '\n'
           '\n'
@@ -13831,28 +14003,28 @@
           '"numbers.Real" ("float")\n'
           '------------------------\n'
           '\n'
-          'These represent machine-level double precision floating point '
+          'These represent machine-level double precision floating-point '
           'numbers.\n'
           'You are at the mercy of the underlying machine architecture (and C '
           'or\n'
           'Java implementation) for the accepted range and handling of '
           'overflow.\n'
-          'Python does not support single-precision floating point numbers; '
+          'Python does not support single-precision floating-point numbers; '
           'the\n'
           'savings in processor and memory usage that are usually the reason '
           'for\n'
           'using these are dwarfed by the overhead of using objects in Python, '
           'so\n'
           'there is no reason to complicate the language with two kinds of\n'
-          'floating point numbers.\n'
+          'floating-point numbers.\n'
           '\n'
           '\n'
           '"numbers.Complex" ("complex")\n'
           '-----------------------------\n'
           '\n'
           'These represent complex numbers as a pair of machine-level double\n'
-          'precision floating point numbers.  The same caveats apply as for\n'
-          'floating point numbers. The real and imaginary parts of a complex\n'
+          'precision floating-point numbers.  The same caveats apply as for\n'
+          'floating-point numbers. The real and imaginary parts of a complex\n'
           'number "z" can be retrieved through the read-only attributes '
           '"z.real"\n'
           'and "z.imag".\n'
@@ -14046,8 +14218,7 @@
           'however removing a key and re-inserting it will add it to the end\n'
           'instead of keeping its old place.\n'
           '\n'
-          'Dictionaries are mutable; they can be created by the "{...}" '
-          'notation\n'
+          'Dictionaries are mutable; they can be created by the "{}" notation\n'
           '(see section Dictionary displays).\n'
           '\n'
           'The extension modules "dbm.ndbm" and "dbm.gnu" provide additional\n'
@@ -14097,13 +14268,15 @@
           '| function.__closure__                               | "None" or a '
           '"tuple" of cells that contain bindings |\n'
           '|                                                    | for the '
-          'function’s free variables.  A cell object  |\n'
-          '|                                                    | has the '
-          'attribute "cell_contents". This can be     |\n'
-          '|                                                    | used to get '
-          'the value of the cell, as well as set  |\n'
-          '|                                                    | the '
-          'value.                                         |\n'
+          'names specified in the "co_freevars"       |\n'
+          '|                                                    | attribute of '
+          'the function’s "code object".  A cell |\n'
+          '|                                                    | object has '
+          'the attribute "cell_contents". This can |\n'
+          '|                                                    | be used to '
+          'get the value of the cell, as well as   |\n'
+          '|                                                    | set the '
+          'value.                                     |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '\n'
           '\n'
@@ -14118,8 +14291,8 @@
           '|====================================================|====================================================|\n'
           '| function.__doc__                                   | The '
           'function’s documentation string, or "None" if  |\n'
-          '|                                                    | unavailable. '
-          'Not inherited by subclasses.          |\n'
+          '|                                                    | '
+          'unavailable.                                       |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '| function.__name__                                  | The '
           'function’s name. See also: "__name__           |\n'
@@ -14267,21 +14440,10 @@
           'to\n'
           'calling "f(C,1)" where "f" is the underlying function.\n'
           '\n'
-          'Note that the transformation from function object to instance '
-          'method\n'
-          'object happens each time the attribute is retrieved from the '
-          'instance.\n'
-          'In some cases, a fruitful optimization is to assign the attribute '
-          'to a\n'
-          'local variable and call that local variable. Also notice that this\n'
-          'transformation only happens for user-defined functions; other '
-          'callable\n'
-          'objects (and all non-callable objects) are retrieved without\n'
-          'transformation.  It is also important to note that user-defined\n'
-          'functions which are attributes of a class instance are not '
-          'converted\n'
-          'to bound methods; this *only* happens when the function is an\n'
-          'attribute of the class.\n'
+          'It is important to note that user-defined functions which are\n'
+          'attributes of a class instance are not converted to bound methods;\n'
+          'this *only* happens when the function is an attribute of the '
+          'class.\n'
           '\n'
           '\n'
           'Generator functions\n'
@@ -14418,43 +14580,267 @@
           'e.g.,\n'
           '"m.x = 1" is equivalent to "m.__dict__["x"] = 1".\n'
           '\n'
-          'Predefined (writable) attributes:\n'
           '\n'
-          '   "__name__"\n'
-          '      The module’s name.\n'
+          'Import-related attributes on module objects\n'
+          '-------------------------------------------\n'
+          '\n'
+          'Module objects have the following attributes that relate to the '
+          'import\n'
+          'system. When a module is created using the machinery associated '
+          'with\n'
+          'the import system, these attributes are filled in based on the\n'
+          'module’s *spec*, before the *loader* executes and loads the '
+          'module.\n'
+          '\n'
+          'To create a module dynamically rather than using the import '
+          'system,\n'
+          'it’s recommended to use "importlib.util.module_from_spec()", which\n'
+          'will set the various import-controlled attributes to appropriate\n'
+          'values. It’s also possible to use the "types.ModuleType" '
+          'constructor\n'
+          'to create modules directly, but this technique is more error-prone, '
+          'as\n'
+          'most attributes must be manually set on the module object after it '
+          'has\n'
+          'been created when using this approach.\n'
+          '\n'
+          'Caution:\n'
+          '\n'
+          '  With the exception of "__name__", it is **strongly** recommended\n'
+          '  that you rely on "__spec__" and its attributes instead of any of '
+          'the\n'
+          '  other individual attributes listed in this subsection. Note that\n'
+          '  updating an attribute on "__spec__" will not update the\n'
+          '  corresponding attribute on the module itself:\n'
+          '\n'
+          '     >>> import typing\n'
+          '     >>> typing.__name__, typing.__spec__.name\n'
+          "     ('typing', 'typing')\n"
+          "     >>> typing.__spec__.name = 'spelling'\n"
+          '     >>> typing.__name__, typing.__spec__.name\n'
+          "     ('typing', 'spelling')\n"
+          "     >>> typing.__name__ = 'keyboard_smashing'\n"
+          '     >>> typing.__name__, typing.__spec__.name\n'
+          "     ('keyboard_smashing', 'spelling')\n"
+          '\n'
+          'module.__name__\n'
+          '\n'
+          '   The name used to uniquely identify the module in the import '
+          'system.\n'
+          '   For a directly executed module, this will be set to '
+          '""__main__"".\n'
+          '\n'
+          '   This attribute must be set to the fully qualified name of the\n'
+          '   module. It is expected to match the value of\n'
+          '   "module.__spec__.name".\n'
+          '\n'
+          'module.__spec__\n'
+          '\n'
+          '   A record of the module’s import-system-related state.\n'
+          '\n'
+          '   Set to the "module spec" that was used when importing the '
+          'module.\n'
+          '   See Module specs for more details.\n'
+          '\n'
+          '   Added in version 3.4.\n'
+          '\n'
+          'module.__package__\n'
+          '\n'
+          '   The *package* a module belongs to.\n'
+          '\n'
+          '   If the module is top-level (that is, not a part of any specific\n'
+          '   package) then the attribute should be set to "\'\'" (the empty\n'
+          '   string). Otherwise, it should be set to the name of the '
+          'module’s\n'
+          '   package (which can be equal to "module.__name__" if the module\n'
+          '   itself is a package). See **PEP 366** for further details.\n'
+          '\n'
+          '   This attribute is used instead of "__name__" to calculate '
+          'explicit\n'
+          '   relative imports for main modules. It defaults to "None" for\n'
+          '   modules created dynamically using the "types.ModuleType"\n'
+          '   constructor; use "importlib.util.module_from_spec()" instead to\n'
+          '   ensure the attribute is set to a "str".\n'
+          '\n'
+          '   It is **strongly** recommended that you use\n'
+          '   "module.__spec__.parent" instead of "module.__package__".\n'
+          '   "__package__" is now only used as a fallback if '
+          '"__spec__.parent"\n'
+          '   is not set, and this fallback path is deprecated.\n'
+          '\n'
+          '   Changed in version 3.4: This attribute now defaults to "None" '
+          'for\n'
+          '   modules created dynamically using the "types.ModuleType"\n'
+          '   constructor. Previously the attribute was optional.\n'
+          '\n'
+          '   Changed in version 3.6: The value of "__package__" is expected '
+          'to\n'
+          '   be the same as "__spec__.parent". "__package__" is now only used '
+          'as\n'
+          '   a fallback during import resolution if "__spec__.parent" is not\n'
+          '   defined.\n'
+          '\n'
+          '   Changed in version 3.10: "ImportWarning" is raised if an import\n'
+          '   resolution falls back to "__package__" instead of\n'
+          '   "__spec__.parent".\n'
+          '\n'
+          '   Changed in version 3.12: Raise "DeprecationWarning" instead of\n'
+          '   "ImportWarning" when falling back to "__package__" during '
+          'import\n'
+          '   resolution.\n'
+          '\n'
+          '   Deprecated since version 3.13, will be removed in version 3.15:\n'
+          '   "__package__" will cease to be set or taken into consideration '
+          'by\n'
+          '   the import system or standard library.\n'
+          '\n'
+          'module.__loader__\n'
+          '\n'
+          '   The *loader* object that the import machinery used to load the\n'
+          '   module.\n'
           '\n'
-          '   "__doc__"\n'
-          '      The module’s documentation string, or "None" if unavailable.\n'
+          '   This attribute is mostly useful for introspection, but can be '
+          'used\n'
+          '   for additional loader-specific functionality, for example '
+          'getting\n'
+          '   data associated with a loader.\n'
+          '\n'
+          '   "__loader__" defaults to "None" for modules created dynamically\n'
+          '   using the "types.ModuleType" constructor; use\n'
+          '   "importlib.util.module_from_spec()" instead to ensure the '
+          'attribute\n'
+          '   is set to a *loader* object.\n'
           '\n'
-          '   "__file__"\n'
-          '      The pathname of the file from which the module was loaded, if '
-          'it\n'
-          '      was loaded from a file. The "__file__" attribute may be '
-          'missing\n'
-          '      for certain types of modules, such as C modules that are\n'
-          '      statically linked into the interpreter.  For extension '
+          '   It is **strongly** recommended that you use\n'
+          '   "module.__spec__.loader" instead of "module.__loader__".\n'
+          '\n'
+          '   Changed in version 3.4: This attribute now defaults to "None" '
+          'for\n'
+          '   modules created dynamically using the "types.ModuleType"\n'
+          '   constructor. Previously the attribute was optional.\n'
+          '\n'
+          '   Deprecated since version 3.12, will be removed in version 3.16:\n'
+          '   Setting "__loader__" on a module while failing to set\n'
+          '   "__spec__.loader" is deprecated. In Python 3.16, "__loader__" '
+          'will\n'
+          '   cease to be set or taken into consideration by the import system '
+          'or\n'
+          '   the standard library.\n'
+          '\n'
+          'module.__path__\n'
+          '\n'
+          '   A (possibly empty) *sequence* of strings enumerating the '
+          'locations\n'
+          '   where the package’s submodules will be found. Non-package '
           'modules\n'
-          '      loaded dynamically from a shared library, it’s the pathname '
-          'of\n'
-          '      the shared library file.\n'
+          '   should not have a "__path__" attribute. See __path__ attributes '
+          'on\n'
+          '   modules for more details.\n'
+          '\n'
+          '   It is **strongly** recommended that you use\n'
+          '   "module.__spec__.submodule_search_locations" instead of\n'
+          '   "module.__path__".\n'
+          '\n'
+          'module.__file__\n'
+          '\n'
+          'module.__cached__\n'
+          '\n'
+          '   "__file__" and "__cached__" are both optional attributes that '
+          'may\n'
+          '   or may not be set. Both attributes should be a "str" when they '
+          'are\n'
+          '   available.\n'
+          '\n'
+          '   "__file__" indicates the pathname of the file from which the '
+          'module\n'
+          '   was loaded (if loaded from a file), or the pathname of the '
+          'shared\n'
+          '   library file for extension modules loaded dynamically from a '
+          'shared\n'
+          '   library. It might be missing for certain types of modules, such '
+          'as\n'
+          '   C modules that are statically linked into the interpreter, and '
+          'the\n'
+          '   import system may opt to leave it unset if it has no semantic\n'
+          '   meaning (for example, a module loaded from a database).\n'
+          '\n'
+          '   If "__file__" is set then the "__cached__" attribute might also '
+          'be\n'
+          '   set,  which is the path to any compiled version of the code '
+          '(for\n'
+          '   example, a byte-compiled file). The file does not need to exist '
+          'to\n'
+          '   set this attribute; the path can simply point to where the '
+          'compiled\n'
+          '   file *would* exist (see **PEP 3147**).\n'
+          '\n'
+          '   Note that "__cached__" may be set even if "__file__" is not '
+          'set.\n'
+          '   However, that scenario is quite atypical.  Ultimately, the '
+          '*loader*\n'
+          '   is what makes use of the module spec provided by the *finder* '
+          '(from\n'
+          '   which "__file__" and "__cached__" are derived).  So if a loader '
+          'can\n'
+          '   load from a cached module but otherwise does not load from a '
+          'file,\n'
+          '   that atypical scenario may be appropriate.\n'
+          '\n'
+          '   It is **strongly** recommended that you use\n'
+          '   "module.__spec__.cached" instead of "module.__cached__".\n'
+          '\n'
+          '   Deprecated since version 3.13, will be removed in version 3.15:\n'
+          '   Setting "__cached__" on a module while failing to set\n'
+          '   "__spec__.cached" is deprecated. In Python 3.15, "__cached__" '
+          'will\n'
+          '   cease to be set or taken into consideration by the import system '
+          'or\n'
+          '   standard library.\n'
           '\n'
-          '   "__annotations__"\n'
-          '      A dictionary containing *variable annotations* collected '
-          'during\n'
-          '      module body execution.  For best practices on working with\n'
-          '      "__annotations__", please see Annotations Best Practices.\n'
           '\n'
-          'Special read-only attribute: "__dict__" is the module’s namespace '
-          'as a\n'
-          'dictionary object.\n'
+          'Other writable attributes on module objects\n'
+          '-------------------------------------------\n'
           '\n'
-          '**CPython implementation detail:** Because of the way CPython '
-          'clears\n'
-          'module dictionaries, the module dictionary will be cleared when '
+          'As well as the import-related attributes listed above, module '
+          'objects\n'
+          'also have the following writable attributes:\n'
+          '\n'
+          'module.__doc__\n'
+          '\n'
+          '   The module’s documentation string, or "None" if unavailable. '
+          'See\n'
+          '   also: "__doc__ attributes".\n'
+          '\n'
+          'module.__annotations__\n'
+          '\n'
+          '   A dictionary containing *variable annotations* collected during\n'
+          '   module body execution.  For best practices on working with\n'
+          '   "__annotations__", please see Annotations Best Practices.\n'
+          '\n'
+          '\n'
+          'Module dictionaries\n'
+          '-------------------\n'
+          '\n'
+          'Module objects also have the following special read-only '
+          'attribute:\n'
+          '\n'
+          'module.__dict__\n'
+          '\n'
+          '   The module’s namespace as a dictionary object. Uniquely among '
+          'the\n'
+          '   attributes listed here, "__dict__" cannot be accessed as a '
+          'global\n'
+          '   variable from within a module; it can only be accessed as an\n'
+          '   attribute on module objects.\n'
+          '\n'
+          '   **CPython implementation detail:** Because of the way CPython\n'
+          '   clears module dictionaries, the module dictionary will be '
+          'cleared\n'
+          '   when the module falls out of scope even if the dictionary still '
+          'has\n'
+          '   live references.  To avoid this, copy the dictionary or keep '
           'the\n'
-          'module falls out of scope even if the dictionary still has live\n'
-          'references.  To avoid this, copy the dictionary or keep the module\n'
-          'around while using its dictionary directly.\n'
+          '   module around while using its dictionary directly.\n'
           '\n'
           '\n'
           'Custom classes\n'
@@ -14500,41 +14886,122 @@
           'A class object can be called (see above) to yield a class instance\n'
           '(see below).\n'
           '\n'
-          'Special attributes:\n'
           '\n'
-          '   "__name__"\n'
-          '      The class name.\n'
+          'Special attributes\n'
+          '------------------\n'
+          '\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| Attribute                                          | '
+          'Meaning                                            |\n'
+          '|====================================================|====================================================|\n'
+          '| type.__name__                                      | The class’s '
+          'name. See also: "__name__ attributes". |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__qualname__                                  | The class’s '
+          '*qualified name*. See also:            |\n'
+          '|                                                    | '
+          '"__qualname__ attributes".                         |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__module__                                    | The name of '
+          'the module in which the class was      |\n'
+          '|                                                    | '
+          'defined.                                           |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__dict__                                      | A "mapping '
+          'proxy" providing a read-only view of    |\n'
+          '|                                                    | the class’s '
+          'namespace. See also: "__dict__         |\n'
+          '|                                                    | '
+          'attributes".                                       |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__bases__                                     | A "tuple" '
+          'containing the class’s bases. In most    |\n'
+          '|                                                    | cases, for a '
+          'class defined as "class X(A, B, C)",  |\n'
+          '|                                                    | '
+          '"X.__bases__" will be exactly equal to "(A, B,     |\n'
+          '|                                                    | '
+          'C)".                                               |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__doc__                                       | The class’s '
+          'documentation string, or "None" if     |\n'
+          '|                                                    | undefined. '
+          'Not inherited by subclasses.            |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__annotations__                               | A dictionary '
+          'containing *variable annotations*     |\n'
+          '|                                                    | collected '
+          'during class body execution. For best    |\n'
+          '|                                                    | practices on '
+          'working with "__annotations__",       |\n'
+          '|                                                    | please see '
+          'Annotations Best Practices.  Caution:   |\n'
+          '|                                                    | Accessing '
+          'the "__annotations__" attribute of a     |\n'
+          '|                                                    | class object '
+          'directly may yield incorrect results  |\n'
+          '|                                                    | in the '
+          'presence of metaclasses. In addition, the   |\n'
+          '|                                                    | attribute '
+          'may not exist for some classes. Use      |\n'
+          '|                                                    | '
+          '"inspect.get_annotations()" to retrieve class      |\n'
+          '|                                                    | annotations '
+          'safely.                                |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__type_params__                               | A "tuple" '
+          'containing the type parameters of a      |\n'
+          '|                                                    | generic '
+          'class.  Added in version 3.12.             |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__static_attributes__                         | A "tuple" '
+          'containing names of attributes of this   |\n'
+          '|                                                    | class which '
+          'are assigned through "self.X" from any |\n'
+          '|                                                    | function in '
+          'its body.  Added in version 3.13.      |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__firstlineno__                               | The line '
+          'number of the first line of the class     |\n'
+          '|                                                    | definition, '
+          'including decorators. Setting the      |\n'
+          '|                                                    | "__module__" '
+          'attribute removes the                 |\n'
+          '|                                                    | '
+          '"__firstlineno__" item from the type’s dictionary. |\n'
+          '|                                                    | Added in '
+          'version 3.13.                             |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
+          '| type.__mro__                                       | The "tuple" '
+          'of classes that are considered when    |\n'
+          '|                                                    | looking for '
+          'base classes during method resolution. |\n'
+          '+----------------------------------------------------+----------------------------------------------------+\n'
           '\n'
-          '   "__module__"\n'
-          '      The name of the module in which the class was defined.\n'
           '\n'
-          '   "__dict__"\n'
-          '      The dictionary containing the class’s namespace.\n'
+          'Special methods\n'
+          '---------------\n'
           '\n'
-          '   "__bases__"\n'
-          '      A tuple containing the base classes, in the order of their\n'
-          '      occurrence in the base class list.\n'
+          'In addition to the special attributes described above, all Python\n'
+          'classes also have the following two methods available:\n'
           '\n'
-          '   "__doc__"\n'
-          '      The class’s documentation string, or "None" if undefined.\n'
+          'type.mro()\n'
           '\n'
-          '   "__annotations__"\n'
-          '      A dictionary containing *variable annotations* collected '
-          'during\n'
-          '      class body execution.  For best practices on working with\n'
-          '      "__annotations__", please see Annotations Best Practices.\n'
+          '   This method can be overridden by a metaclass to customize the\n'
+          '   method resolution order for its instances.  It is called at '
+          'class\n'
+          '   instantiation, and its result is stored in "__mro__".\n'
           '\n'
-          '   "__type_params__"\n'
-          '      A tuple containing the type parameters of a generic class.\n'
+          'type.__subclasses__()\n'
           '\n'
-          '   "__static_attributes__"\n'
-          '      A tuple containing names of attributes of this class which '
-          'are\n'
-          '      accessed through "self.X" from any function in its body.\n'
+          '   Each class keeps a list of weak references to its immediate\n'
+          '   subclasses. This method returns a list of all those references\n'
+          '   still alive. The list is in definition order. Example:\n'
           '\n'
-          '   "__firstlineno__"\n'
-          '      The line number of the first line of the class definition,\n'
-          '      including decorators.\n'
+          '      >>> class A: pass\n'
+          '      >>> class B(A): pass\n'
+          '      >>> A.__subclasses__()\n'
+          "      [<class 'B'>]\n"
           '\n'
           '\n'
           'Class instances\n'
@@ -14574,8 +15041,19 @@
           'they have methods with certain special names.  See section Special\n'
           'method names.\n'
           '\n'
-          'Special attributes: "__dict__" is the attribute dictionary;\n'
-          '"__class__" is the instance’s class.\n'
+          '\n'
+          'Special attributes\n'
+          '------------------\n'
+          '\n'
+          'object.__class__\n'
+          '\n'
+          '   The class to which a class instance belongs.\n'
+          '\n'
+          'object.__dict__\n'
+          '\n'
+          '   A dictionary or other mapping object used to store an object’s\n'
+          '   (writable) attributes. Not all instances have a "__dict__"\n'
+          '   attribute; see the section on __slots__ for more details.\n'
           '\n'
           '\n'
           'I/O objects (also known as file objects)\n'
@@ -14674,14 +15152,20 @@
           '| codeobject.co_cellvars                             | A "tuple" '
           'containing the names of local variables  |\n'
           '|                                                    | that are '
-          'referenced by nested functions inside the |\n'
-          '|                                                    | '
-          'function                                           |\n'
+          'referenced from at least one *nested      |\n'
+          '|                                                    | scope* '
+          'inside the function                         |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '| codeobject.co_freevars                             | A "tuple" '
-          'containing the names of free variables   |\n'
-          '|                                                    | in the '
-          'function                                    |\n'
+          'containing the names of *free (closure)  |\n'
+          '|                                                    | variables* '
+          'that a *nested scope* references in an  |\n'
+          '|                                                    | outer scope. '
+          'See also "function.__closure__".      |\n'
+          '|                                                    | Note: '
+          'references to global and builtin names are   |\n'
+          '|                                                    | *not* '
+          'included.                                    |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '| codeobject.co_code                                 | A string '
           'representing the sequence of *bytecode*   |\n'
@@ -14715,7 +15199,7 @@
           '|                                                    | version '
           '3.12: This attribute of code objects is    |\n'
           '|                                                    | deprecated, '
-          'and may be removed in Python 3.14.     |\n'
+          'and may be removed in Python 3.15.     |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '| codeobject.co_stacksize                            | The required '
           'stack size of the code object         |\n'
@@ -14766,10 +15250,10 @@
           '   The iterator returns "tuple"s containing the "(start_line,\n'
           '   end_line, start_column, end_column)". The *i-th* tuple '
           'corresponds\n'
-          '   to the position of the source code that compiled to the *i-th*\n'
-          '   instruction. Column information is 0-indexed utf-8 byte offsets '
-          'on\n'
-          '   the given source line.\n'
+          '   to the position of the source code that compiled to the *i-th* '
+          'code\n'
+          '   unit. Column information is 0-indexed utf-8 byte offsets on the\n'
+          '   given source line.\n'
           '\n'
           '   This positional information can be missing. A non-exhaustive '
           'lists\n'
@@ -14894,16 +15378,16 @@
           '|                                                    | '
           '""f_code"".                                        |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
-          '| frame.f_locals                                     | The '
-          'dictionary used by the frame to look up local  |\n'
+          '| frame.f_locals                                     | The mapping '
+          'used by the frame to look up local     |\n'
           '|                                                    | variables. '
-          'If the frame refers to a function or    |\n'
-          '|                                                    | '
-          'comprehension, this may return a write- through    |\n'
-          '|                                                    | proxy '
-          'object.  Changed in version 3.13: Return a   |\n'
-          '|                                                    | proxy for '
-          'functions and comprehensions.            |\n'
+          'If the frame refers to an *optimized    |\n'
+          '|                                                    | scope*, this '
+          'may return a write-through proxy      |\n'
+          '|                                                    | object.  '
+          'Changed in version 3.13: Return a proxy   |\n'
+          '|                                                    | for '
+          'optimized scopes.                              |\n'
           '+----------------------------------------------------+----------------------------------------------------+\n'
           '| frame.f_globals                                    | The '
           'dictionary used by the frame to look up global |\n'
@@ -15185,21 +15669,23 @@
                  '\n'
                  '   If no positional argument is given, an empty dictionary '
                  'is created.\n'
-                 '   If a positional argument is given and it is a mapping '
-                 'object, a\n'
-                 '   dictionary is created with the same key-value pairs as '
-                 'the mapping\n'
-                 '   object.  Otherwise, the positional argument must be an '
-                 '*iterable*\n'
-                 '   object.  Each item in the iterable must itself be an '
-                 'iterable with\n'
-                 '   exactly two objects.  The first object of each item '
-                 'becomes a key\n'
-                 '   in the new dictionary, and the second object the '
-                 'corresponding\n'
-                 '   value.  If a key occurs more than once, the last value '
-                 'for that key\n'
-                 '   becomes the corresponding value in the new dictionary.\n'
+                 '   If a positional argument is given and it defines a '
+                 '"keys()" method,\n'
+                 '   a dictionary is created by calling "__getitem__()" on the '
+                 'argument\n'
+                 '   with each returned key from the method.  Otherwise, the '
+                 'positional\n'
+                 '   argument must be an *iterable* object.  Each item in the '
+                 'iterable\n'
+                 '   must itself be an iterable with exactly two elements.  '
+                 'The first\n'
+                 '   element of each item becomes a key in the new dictionary, '
+                 'and the\n'
+                 '   second element the corresponding value.  If a key occurs '
+                 'more than\n'
+                 '   once, the last value for that key becomes the '
+                 'corresponding value\n'
+                 '   in the new dictionary.\n'
                  '\n'
                  '   If keyword arguments are given, the keyword arguments and '
                  'their\n'
@@ -15312,7 +15798,7 @@
                  '\n'
                  '      Return a shallow copy of the dictionary.\n'
                  '\n'
-                 '   classmethod fromkeys(iterable[, value])\n'
+                 '   classmethod fromkeys(iterable, value=None, /)\n'
                  '\n'
                  '      Create a new dictionary with keys from *iterable* and '
                  'values set\n'
@@ -15328,7 +15814,7 @@
                  'distinct\n'
                  '      values, use a dict comprehension instead.\n'
                  '\n'
-                 '   get(key[, default])\n'
+                 '   get(key, default=None)\n'
                  '\n'
                  '      Return the value for *key* if *key* is in the '
                  'dictionary, else\n'
@@ -15380,7 +15866,7 @@
                  '\n'
                  '      Added in version 3.8.\n'
                  '\n'
-                 '   setdefault(key[, default])\n'
+                 '   setdefault(key, default=None)\n'
                  '\n'
                  '      If *key* is in the dictionary, return its value.  If '
                  'not, insert\n'
@@ -15394,15 +15880,17 @@
                  '*other*,\n'
                  '      overwriting existing keys.  Return "None".\n'
                  '\n'
-                 '      "update()" accepts either another dictionary object or '
-                 'an\n'
-                 '      iterable of key/value pairs (as tuples or other '
-                 'iterables of\n'
-                 '      length two).  If keyword arguments are specified, the '
-                 'dictionary\n'
-                 '      is then updated with those key/value pairs: '
-                 '"d.update(red=1,\n'
-                 '      blue=2)".\n'
+                 '      "update()" accepts either another object with a '
+                 '"keys()" method\n'
+                 '      (in which case "__getitem__()" is called with every '
+                 'key returned\n'
+                 '      from the method) or an iterable of key/value pairs (as '
+                 'tuples or\n'
+                 '      other iterables of length two). If keyword arguments '
+                 'are\n'
+                 '      specified, the dictionary is then updated with those '
+                 'key/value\n'
+                 '      pairs: "d.update(red=1, blue=2)".\n'
                  '\n'
                  '   values()\n'
                  '\n'
@@ -16067,8 +16555,8 @@
              '|                                | also removes it from '
              '*s*         |                       |\n'
              '+--------------------------------+----------------------------------+-----------------------+\n'
-             '| "s.remove(x)"                  | remove the first item from '
-             '*s*   | (3)                   |\n'
+             '| "s.remove(x)"                  | removes the first item from '
+             '*s*  | (3)                   |\n'
              '|                                | where "s[i]" is equal to '
              '*x*     |                       |\n'
              '+--------------------------------+----------------------------------+-----------------------+\n'
@@ -16080,7 +16568,9 @@
              '\n'
              'Notes:\n'
              '\n'
-             '1. *t* must have the same length as the slice it is replacing.\n'
+             '1. If *k* is not equal to "1", *t* must have the same length as '
+             'the\n'
+             '   slice it is replacing.\n'
              '\n'
              '2. The optional argument *i* defaults to "-1", so that by '
              'default the\n'
@@ -16437,7 +16927,7 @@
              '\n'
              '  * The linspace recipe shows how to implement a lazy version of '
              'range\n'
-             '    suitable for floating point applications.\n',
+             '    suitable for floating-point applications.\n',
  'typesseq-mutable': 'Mutable Sequence Types\n'
                      '**********************\n'
                      '\n'
@@ -16530,8 +17020,8 @@
                      '|                                | also removes it from '
                      '*s*         |                       |\n'
                      '+--------------------------------+----------------------------------+-----------------------+\n'
-                     '| "s.remove(x)"                  | remove the first item '
-                     'from *s*   | (3)                   |\n'
+                     '| "s.remove(x)"                  | removes the first '
+                     'item from *s*  | (3)                   |\n'
                      '|                                | where "s[i]" is equal '
                      'to *x*     |                       |\n'
                      '+--------------------------------+----------------------------------+-----------------------+\n'
@@ -16544,8 +17034,9 @@
                      '\n'
                      'Notes:\n'
                      '\n'
-                     '1. *t* must have the same length as the slice it is '
-                     'replacing.\n'
+                     '1. If *k* is not equal to "1", *t* must have the same '
+                     'length as the\n'
+                     '   slice it is replacing.\n'
                      '\n'
                      '2. The optional argument *i* defaults to "-1", so that '
                      'by default the\n'
@@ -16707,18 +17198,15 @@
          '   enter = type(manager).__enter__\n'
          '   exit = type(manager).__exit__\n'
          '   value = enter(manager)\n'
-         '   hit_except = False\n'
          '\n'
          '   try:\n'
          '       TARGET = value\n'
          '       SUITE\n'
          '   except:\n'
-         '       hit_except = True\n'
          '       if not exit(manager, *sys.exc_info()):\n'
          '           raise\n'
-         '   finally:\n'
-         '       if not hit_except:\n'
-         '           exit(manager, None, None, None)\n'
+         '   else:\n'
+         '       exit(manager, None, None, None)\n'
          '\n'
          'With more than one item, the context managers are processed as if\n'
          'multiple "with" statements were nested:\n'
@@ -16759,7 +17247,8 @@
           '\n'
           'A "yield" statement is semantically equivalent to a yield '
           'expression.\n'
-          'The yield statement can be used to omit the parentheses that would\n'
+          'The "yield" statement can be used to omit the parentheses that '
+          'would\n'
           'otherwise be required in the equivalent yield expression '
           'statement.\n'
           'For example, the yield statements\n'
@@ -16775,10 +17264,9 @@
           'Yield expressions and statements are only used when defining a\n'
           '*generator* function, and are only used in the body of the '
           'generator\n'
-          'function.  Using yield in a function definition is sufficient to '
-          'cause\n'
-          'that definition to create a generator function instead of a normal\n'
-          'function.\n'
+          'function.  Using "yield" in a function definition is sufficient to\n'
+          'cause that definition to create a generator function instead of a\n'
+          'normal function.\n'
           '\n'
           'For full details of "yield" semantics, refer to the Yield '
           'expressions\n'
diff --git a/Lib/random.py b/Lib/random.py
index bcc11c7cd3c208..8b9a270c429e4a 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -1013,7 +1013,7 @@ def _parse_args(arg_list: list[str] | None):
         help="print a random integer between 1 and N inclusive")
     group.add_argument(
         "-f", "--float", type=float, metavar="N",
-        help="print a random floating point number between 1 and N inclusive")
+        help="print a random floating-point number between 0 and N inclusive")
     group.add_argument(
         "--test", type=int, const=10_000, nargs="?",
         help=argparse.SUPPRESS)
@@ -1038,7 +1038,7 @@ def main(arg_list: list[str] | None = None) -> int | str:
         return randint(1, args.integer)
 
     if args.float is not None:
-        return uniform(1, args.float)
+        return uniform(0, args.float)
 
     if args.test:
         _test(args.test)
@@ -1055,7 +1055,7 @@ def main(arg_list: list[str] | None = None) -> int | str:
             try:
                 # Is it a float?
                 val = float(val)
-                return uniform(1, val)
+                return uniform(0, val)
             except ValueError:
                 # Split in case of space-separated string: "a b c"
                 return choice(val.split())
diff --git a/Lib/re/_casefix.py b/Lib/re/_casefix.py
index 06507d08bee02b..fed2d84fc01473 100644
--- a/Lib/re/_casefix.py
+++ b/Lib/re/_casefix.py
@@ -1,4 +1,4 @@
-# Auto-generated by Tools/scripts/generate_re_casefix.py.
+# Auto-generated by Tools/build/generate_re_casefix.py.
 
 # Maps the code of lowercased character to codes of different lowercased
 # characters which have the same uppercase.
diff --git a/Lib/re/_compiler.py b/Lib/re/_compiler.py
index 7b888f877eb3dc..1b1aaa7714b49c 100644
--- a/Lib/re/_compiler.py
+++ b/Lib/re/_compiler.py
@@ -248,11 +248,11 @@ def _optimize_charset(charset, iscased=None, fixup=None, fixes=None):
         while True:
             try:
                 if op is LITERAL:
-                    if fixup:
-                        lo = fixup(av)
-                        charmap[lo] = 1
-                        if fixes and lo in fixes:
-                            for k in fixes[lo]:
+                    if fixup: # IGNORECASE and not LOCALE
+                        av = fixup(av)
+                        charmap[av] = 1
+                        if fixes and av in fixes:
+                            for k in fixes[av]:
                                 charmap[k] = 1
                         if not hascased and iscased(av):
                             hascased = True
@@ -260,7 +260,7 @@ def _optimize_charset(charset, iscased=None, fixup=None, fixes=None):
                         charmap[av] = 1
                 elif op is RANGE:
                     r = range(av[0], av[1]+1)
-                    if fixup:
+                    if fixup: # IGNORECASE and not LOCALE
                         if fixes:
                             for i in map(fixup, r):
                                 charmap[i] = 1
@@ -287,8 +287,7 @@ def _optimize_charset(charset, iscased=None, fixup=None, fixes=None):
                 # Character set contains non-BMP character codes.
                 # For range, all BMP characters in the range are already
                 # proceeded.
-                if fixup:
-                    hascased = True
+                if fixup: # IGNORECASE and not LOCALE
                     # For now, IN_UNI_IGNORE+LITERAL and
                     # IN_UNI_IGNORE+RANGE_UNI_IGNORE work for all non-BMP
                     # characters, because two characters (at least one of
@@ -299,7 +298,13 @@ def _optimize_charset(charset, iscased=None, fixup=None, fixes=None):
                     # Also, both c.lower() and c.lower().upper() are single
                     # characters for every non-BMP character.
                     if op is RANGE:
-                        op = RANGE_UNI_IGNORE
+                        if fixes: # not ASCII
+                            op = RANGE_UNI_IGNORE
+                        hascased = True
+                    else:
+                        assert op is LITERAL
+                        if not hascased and iscased(av):
+                            hascased = True
                 tail.append((op, av))
             break
 
diff --git a/Lib/reprlib.py b/Lib/reprlib.py
index 05bb1a0eb01795..19dbe3a07eb618 100644
--- a/Lib/reprlib.py
+++ b/Lib/reprlib.py
@@ -36,6 +36,17 @@ def wrapper(self):
     return decorating_function
 
 class Repr:
+    _lookup = {
+        'tuple': 'builtins',
+        'list': 'builtins',
+        'array': 'array',
+        'set': 'builtins',
+        'frozenset': 'builtins',
+        'deque': 'collections',
+        'dict': 'builtins',
+        'str': 'builtins',
+        'int': 'builtins'
+    }
 
     def __init__(
         self, *, maxlevel=6, maxtuple=6, maxlist=6, maxarray=5, maxdict=4,
@@ -60,14 +71,24 @@ def repr(self, x):
         return self.repr1(x, self.maxlevel)
 
     def repr1(self, x, level):
-        typename = type(x).__name__
+        cls = type(x)
+        typename = cls.__name__
+
         if ' ' in typename:
             parts = typename.split()
             typename = '_'.join(parts)
-        if hasattr(self, 'repr_' + typename):
-            return getattr(self, 'repr_' + typename)(x, level)
-        else:
-            return self.repr_instance(x, level)
+
+        method = getattr(self, 'repr_' + typename, None)
+        if method:
+            # not defined in this class
+            if typename not in self._lookup:
+                return method(x, level)
+            module = getattr(cls, '__module__', None)
+            # defined in this class and is the module intended
+            if module == self._lookup[typename]:
+                return method(x, level)
+
+        return self.repr_instance(x, level)
 
     def _join(self, pieces, level):
         if self.indent is None:
diff --git a/Lib/rlcompleter.py b/Lib/rlcompleter.py
index 206d6fb511cdf6..23eb0020f42e8a 100644
--- a/Lib/rlcompleter.py
+++ b/Lib/rlcompleter.py
@@ -35,6 +35,7 @@
 import keyword
 import re
 import __main__
+import warnings
 
 __all__ = ["Completer"]
 
@@ -88,10 +89,11 @@ def complete(self, text, state):
                 return None
 
         if state == 0:
-            if "." in text:
-                self.matches = self.attr_matches(text)
-            else:
-                self.matches = self.global_matches(text)
+            with warnings.catch_warnings(action="ignore"):
+                if "." in text:
+                    self.matches = self.attr_matches(text)
+                else:
+                    self.matches = self.global_matches(text)
         try:
             return self.matches[state]
         except IndexError:
diff --git a/Lib/sched.py b/Lib/sched.py
index 14613cf29874da..fb20639d459967 100644
--- a/Lib/sched.py
+++ b/Lib/sched.py
@@ -11,7 +11,7 @@
 implement simulated time by writing your own functions.  This can
 also be used to integrate scheduling with STDWIN events; the delay
 function is allowed to modify the queue.  Time can be expressed as
-integers or floating point numbers, as long as it is consistent.
+integers or floating-point numbers, as long as it is consistent.
 
 Events are specified by tuples (time, priority, action, argument, kwargs).
 As in UNIX, lower priority numbers mean higher priority; in this
diff --git a/Lib/shutil.py b/Lib/shutil.py
index c9b4da34b1e19b..7df972012c7d26 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -606,37 +606,21 @@ def _rmtree_islink(st):
 
 # version vulnerable to race conditions
 def _rmtree_unsafe(path, onexc):
-    try:
-        with os.scandir(path) as scandir_it:
-            entries = list(scandir_it)
-    except FileNotFoundError:
-        return
-    except OSError as err:
-        onexc(os.scandir, path, err)
-        entries = []
-    for entry in entries:
-        fullname = entry.path
-        try:
-            is_dir = entry.is_dir(follow_symlinks=False)
-        except FileNotFoundError:
-            continue
-        except OSError:
-            is_dir = False
-
-        if is_dir and not entry.is_junction():
+    def onerror(err):
+        if not isinstance(err, FileNotFoundError):
+            onexc(os.scandir, err.filename, err)
+    results = os.walk(path, topdown=False, onerror=onerror, followlinks=os._walk_symlinks_as_files)
+    for dirpath, dirnames, filenames in results:
+        for name in dirnames:
+            fullname = os.path.join(dirpath, name)
             try:
-                if entry.is_symlink():
-                    # This can only happen if someone replaces
-                    # a directory with a symlink after the call to
-                    # os.scandir or entry.is_dir above.
-                    raise OSError("Cannot call rmtree on a symbolic link")
+                os.rmdir(fullname)
             except FileNotFoundError:
                 continue
             except OSError as err:
-                onexc(os.path.islink, fullname, err)
-                continue
-            _rmtree_unsafe(fullname, onexc)
-        else:
+                onexc(os.rmdir, fullname, err)
+        for name in filenames:
+            fullname = os.path.join(dirpath, name)
             try:
                 os.unlink(fullname)
             except FileNotFoundError:
@@ -651,81 +635,76 @@ def _rmtree_unsafe(path, onexc):
         onexc(os.rmdir, path, err)
 
 # Version using fd-based APIs to protect against races
-def _rmtree_safe_fd(topfd, path, onexc):
+def _rmtree_safe_fd(stack, onexc):
+    # Each stack item has four elements:
+    # * func: The first operation to perform: os.lstat, os.close or os.rmdir.
+    #   Walking a directory starts with an os.lstat() to detect symlinks; in
+    #   this case, func is updated before subsequent operations and passed to
+    #   onexc() if an error occurs.
+    # * dirfd: Open file descriptor, or None if we're processing the top-level
+    #   directory given to rmtree() and the user didn't supply dir_fd.
+    # * path: Path of file to operate upon. This is passed to onexc() if an
+    #   error occurs.
+    # * orig_entry: os.DirEntry, or None if we're processing the top-level
+    #   directory given to rmtree(). We used the cached stat() of the entry to
+    #   save a call to os.lstat() when walking subdirectories.
+    func, dirfd, path, orig_entry = stack.pop()
+    name = path if orig_entry is None else orig_entry.name
     try:
+        if func is os.close:
+            os.close(dirfd)
+            return
+        if func is os.rmdir:
+            os.rmdir(name, dir_fd=dirfd)
+            return
+
+        # Note: To guard against symlink races, we use the standard
+        # lstat()/open()/fstat() trick.
+        assert func is os.lstat
+        if orig_entry is None:
+            orig_st = os.lstat(name, dir_fd=dirfd)
+        else:
+            orig_st = orig_entry.stat(follow_symlinks=False)
+
+        func = os.open  # For error reporting.
+        topfd = os.open(name, os.O_RDONLY | os.O_NONBLOCK, dir_fd=dirfd)
+
+        func = os.path.islink  # For error reporting.
+        try:
+            if not os.path.samestat(orig_st, os.fstat(topfd)):
+                # Symlinks to directories are forbidden, see GH-46010.
+                raise OSError("Cannot call rmtree on a symbolic link")
+            stack.append((os.rmdir, dirfd, path, orig_entry))
+        finally:
+            stack.append((os.close, topfd, path, orig_entry))
+
+        func = os.scandir  # For error reporting.
         with os.scandir(topfd) as scandir_it:
             entries = list(scandir_it)
-    except FileNotFoundError:
-        return
-    except OSError as err:
-        err.filename = path
-        onexc(os.scandir, path, err)
-        return
-    for entry in entries:
-        fullname = os.path.join(path, entry.name)
-        try:
-            is_dir = entry.is_dir(follow_symlinks=False)
-        except FileNotFoundError:
-            continue
-        except OSError:
-            is_dir = False
-        else:
-            if is_dir:
-                try:
-                    orig_st = entry.stat(follow_symlinks=False)
-                    is_dir = stat.S_ISDIR(orig_st.st_mode)
-                except FileNotFoundError:
-                    continue
-                except OSError as err:
-                    onexc(os.lstat, fullname, err)
-                    continue
-        if is_dir:
+        for entry in entries:
+            fullname = os.path.join(path, entry.name)
             try:
-                dirfd = os.open(entry.name, os.O_RDONLY | os.O_NONBLOCK, dir_fd=topfd)
-                dirfd_closed = False
+                if entry.is_dir(follow_symlinks=False):
+                    # Traverse into sub-directory.
+                    stack.append((os.lstat, topfd, fullname, entry))
+                    continue
             except FileNotFoundError:
                 continue
-            except OSError as err:
-                onexc(os.open, fullname, err)
-            else:
-                try:
-                    if os.path.samestat(orig_st, os.fstat(dirfd)):
-                        _rmtree_safe_fd(dirfd, fullname, onexc)
-                        try:
-                            os.close(dirfd)
-                        except OSError as err:
-                            # close() should not be retried after an error.
-                            dirfd_closed = True
-                            onexc(os.close, fullname, err)
-                        dirfd_closed = True
-                        try:
-                            os.rmdir(entry.name, dir_fd=topfd)
-                        except FileNotFoundError:
-                            continue
-                        except OSError as err:
-                            onexc(os.rmdir, fullname, err)
-                    else:
-                        try:
-                            # This can only happen if someone replaces
-                            # a directory with a symlink after the call to
-                            # os.scandir or stat.S_ISDIR above.
-                            raise OSError("Cannot call rmtree on a symbolic "
-                                          "link")
-                        except OSError as err:
-                            onexc(os.path.islink, fullname, err)
-                finally:
-                    if not dirfd_closed:
-                        try:
-                            os.close(dirfd)
-                        except OSError as err:
-                            onexc(os.close, fullname, err)
-        else:
+            except OSError:
+                pass
             try:
                 os.unlink(entry.name, dir_fd=topfd)
             except FileNotFoundError:
                 continue
             except OSError as err:
                 onexc(os.unlink, fullname, err)
+    except FileNotFoundError as err:
+        if orig_entry is None or func is os.close:
+            err.filename = path
+            onexc(func, path, err)
+    except OSError as err:
+        err.filename = path
+        onexc(func, path, err)
 
 _use_fd_functions = ({os.open, os.stat, os.unlink, os.rmdir} <=
                      os.supports_dir_fd and
@@ -778,41 +757,16 @@ def onexc(*args):
         # While the unsafe rmtree works fine on bytes, the fd based does not.
         if isinstance(path, bytes):
             path = os.fsdecode(path)
-        # Note: To guard against symlink races, we use the standard
-        # lstat()/open()/fstat() trick.
-        try:
-            orig_st = os.lstat(path, dir_fd=dir_fd)
-        except OSError as err:
-            onexc(os.lstat, path, err)
-            return
-        try:
-            fd = os.open(path, os.O_RDONLY | os.O_NONBLOCK, dir_fd=dir_fd)
-            fd_closed = False
-        except OSError as err:
-            onexc(os.open, path, err)
-            return
+        stack = [(os.lstat, dir_fd, path, None)]
         try:
-            if os.path.samestat(orig_st, os.fstat(fd)):
-                _rmtree_safe_fd(fd, path, onexc)
-                try:
-                    os.close(fd)
-                except OSError as err:
-                    # close() should not be retried after an error.
-                    fd_closed = True
-                    onexc(os.close, path, err)
-                fd_closed = True
-                try:
-                    os.rmdir(path, dir_fd=dir_fd)
-                except OSError as err:
-                    onexc(os.rmdir, path, err)
-            else:
-                try:
-                    # symlinks to directories are forbidden, see bug #1669
-                    raise OSError("Cannot call rmtree on a symbolic link")
-                except OSError as err:
-                    onexc(os.path.islink, path, err)
+            while stack:
+                _rmtree_safe_fd(stack, onexc)
         finally:
-            if not fd_closed:
+            # Close any file descriptors still on the stack.
+            while stack:
+                func, fd, path, entry = stack.pop()
+                if func is not os.close:
+                    continue
                 try:
                     os.close(fd)
                 except OSError as err:
@@ -1597,21 +1551,21 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
     if sys.platform == "win32":
         # PATHEXT is necessary to check on Windows.
         pathext_source = os.getenv("PATHEXT") or _WIN_DEFAULT_PATHEXT
-        pathext = [ext for ext in pathext_source.split(os.pathsep) if ext]
+        pathext = pathext_source.split(os.pathsep)
+        pathext = [ext.rstrip('.') for ext in pathext if ext]
 
         if use_bytes:
             pathext = [os.fsencode(ext) for ext in pathext]
 
-        files = ([cmd] + [cmd + ext for ext in pathext])
+        files = [cmd + ext for ext in pathext]
 
-        # gh-109590. If we are looking for an executable, we need to look
-        # for a PATHEXT match. The first cmd is the direct match
-        # (e.g. python.exe instead of python)
-        # Check that direct match first if and only if the extension is in PATHEXT
-        # Otherwise check it last
-        suffix = os.path.splitext(files[0])[1].upper()
-        if mode & os.X_OK and not any(suffix == ext.upper() for ext in pathext):
-            files.append(files.pop(0))
+        # If X_OK in mode, simulate the cmd.exe behavior: look at direct
+        # match if and only if the extension is in PATHEXT.
+        # If X_OK not in mode, simulate the first result of where.exe:
+        # always look at direct match before a PATHEXT match.
+        normcmd = cmd.upper()
+        if not (mode & os.X_OK) or any(normcmd.endswith(ext.upper()) for ext in pathext):
+            files.insert(0, cmd)
     else:
         # On other platforms you don't have things like PATHEXT to tell you
         # what file suffixes are executable, so just pass on cmd as-is.
@@ -1620,7 +1574,7 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
     seen = set()
     for dir in path:
         normdir = os.path.normcase(dir)
-        if not normdir in seen:
+        if normdir not in seen:
             seen.add(normdir)
             for thefile in files:
                 name = os.path.join(dir, thefile)
diff --git a/Lib/site.py b/Lib/site.py
index b63447d6673f68..89a81c55cb63dd 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -185,7 +185,9 @@ def addpackage(sitedir, name, known_paths):
         return
 
     try:
-        pth_content = pth_content.decode()
+        # Accept BOM markers in .pth files as we do in source files
+        # (Windows PowerShell 5.1 makes it hard to emit UTF-8 files without a BOM)
+        pth_content = pth_content.decode("utf-8-sig")
     except UnicodeDecodeError:
         # Fallback to locale encoding for backward compatibility.
         # We will deprecate this fallback in the future.
@@ -310,6 +312,10 @@ def joinuser(*args):
 # Same to sysconfig.get_path('purelib', os.name+'_user')
 def _get_path(userbase):
     version = sys.version_info
+    if hasattr(sys, 'abiflags') and 't' in sys.abiflags:
+        abi_thread = 't'
+    else:
+        abi_thread = ''
 
     implementation = _get_implementation()
     implementation_lower = implementation.lower()
@@ -320,7 +326,7 @@ def _get_path(userbase):
     if sys.platform == 'darwin' and sys._framework:
         return f'{userbase}/lib/{implementation_lower}/site-packages'
 
-    return f'{userbase}/lib/python{version[0]}.{version[1]}/site-packages'
+    return f'{userbase}/lib/python{version[0]}.{version[1]}{abi_thread}/site-packages'
 
 
 def getuserbase():
@@ -388,6 +394,10 @@ def getsitepackages(prefixes=None):
 
         implementation = _get_implementation().lower()
         ver = sys.version_info
+        if hasattr(sys, 'abiflags') and 't' in sys.abiflags:
+            abi_thread = 't'
+        else:
+            abi_thread = ''
         if os.sep == '/':
             libdirs = [sys.platlibdir]
             if sys.platlibdir != "lib":
@@ -395,7 +405,7 @@ def getsitepackages(prefixes=None):
 
             for libdir in libdirs:
                 path = os.path.join(prefix, libdir,
-                                    f"{implementation}{ver[0]}.{ver[1]}",
+                                    f"{implementation}{ver[0]}.{ver[1]}{abi_thread}",
                                     "site-packages")
                 sitepackages.append(path)
         else:
@@ -432,8 +442,9 @@ def setcopyright():
     """Set 'copyright' and 'credits' in builtins"""
     builtins.copyright = _sitebuiltins._Printer("copyright", sys.copyright)
     builtins.credits = _sitebuiltins._Printer("credits", """\
-    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
-    for supporting Python development.  See www.python.org for more information.""")
+    Thanks to CWI, CNRI, BeOpen, Zope Corporation, the Python Software
+    Foundation, and a cast of thousands for supporting Python
+    development.  See www.python.org for more information.""")
     files, dirs = [], []
     # Not all modules are required to have a __file__ attribute.  See
     # PEP 420 for more details.
@@ -481,32 +492,61 @@ def register_readline():
     This can be overridden in the sitecustomize or usercustomize module,
     or in a PYTHONSTARTUP file.
     """
+    if not sys.flags.ignore_environment:
+        PYTHON_BASIC_REPL = os.getenv("PYTHON_BASIC_REPL")
+    else:
+        PYTHON_BASIC_REPL = False
+
     import atexit
+
     try:
-        import readline
-        import rlcompleter
-        import _pyrepl.readline
-        import _pyrepl.unix_console
+        try:
+            import readline
+        except ImportError:
+            readline = None
+        else:
+            import rlcompleter  # noqa: F401
     except ImportError:
         return
 
-    # Reading the initialization (config) file may not be enough to set a
-    # completion key, so we set one first and then read the file.
-    if readline.backend == 'editline':
-        readline.parse_and_bind('bind ^I rl_complete')
-    else:
-        readline.parse_and_bind('tab: complete')
-
     try:
-        readline.read_init_file()
-    except OSError:
-        # An OSError here could have many causes, but the most likely one
-        # is that there's no .inputrc file (or .editrc file in the case of
-        # Mac OS X + libedit) in the expected location.  In that case, we
-        # want to ignore the exception.
-        pass
+        if PYTHON_BASIC_REPL:
+            CAN_USE_PYREPL = False
+        else:
+            original_path = sys.path
+            sys.path = [p for p in original_path if p != '']
+            try:
+                import _pyrepl.readline
+                if os.name == "nt":
+                    import _pyrepl.windows_console
+                    console_errors = (_pyrepl.windows_console._error,)
+                else:
+                    import _pyrepl.unix_console
+                    console_errors = _pyrepl.unix_console._error
+                from _pyrepl.main import CAN_USE_PYREPL
+            finally:
+                sys.path = original_path
+    except ImportError:
+        return
 
-    if readline.get_current_history_length() == 0:
+    if readline is not None:
+        # Reading the initialization (config) file may not be enough to set a
+        # completion key, so we set one first and then read the file.
+        if readline.backend == 'editline':
+            readline.parse_and_bind('bind ^I rl_complete')
+        else:
+            readline.parse_and_bind('tab: complete')
+
+        try:
+            readline.read_init_file()
+        except OSError:
+            # An OSError here could have many causes, but the most likely one
+            # is that there's no .inputrc file (or .editrc file in the case of
+            # Mac OS X + libedit) in the expected location.  In that case, we
+            # want to ignore the exception.
+            pass
+
+    if readline is None or readline.get_current_history_length() == 0:
         # If no history was loaded, default to .python_history,
         # or PYTHON_HISTORY.
         # The guard is necessary to avoid doubling history size at
@@ -514,20 +554,24 @@ def register_readline():
         # through a PYTHONSTARTUP hook, see:
         # http://bugs.python.org/issue5845#msg198636
         history = gethistoryfile()
+
+        if CAN_USE_PYREPL:
+            readline_module = _pyrepl.readline
+            exceptions = (OSError, *console_errors)
+        else:
+            if readline is None:
+                return
+            readline_module = readline
+            exceptions = OSError
+
         try:
-            if os.getenv("PYTHON_BASIC_REPL"):
-                readline.read_history_file(history)
-            else:
-                _pyrepl.readline.read_history_file(history)
-        except (OSError,* _pyrepl.unix_console._error):
+            readline_module.read_history_file(history)
+        except exceptions:
             pass
 
         def write_history():
             try:
-                if os.getenv("PYTHON_BASIC_REPL"):
-                    readline.write_history_file(history)
-                else:
-                    _pyrepl.readline.write_history_file(history)
+                readline_module.write_history_file(history)
             except (FileNotFoundError, PermissionError):
                 # home directory does not exist or is not writable
                 # https://bugs.python.org/issue19891
diff --git a/Lib/socket.py b/Lib/socket.py
index 77986fc2e48099..35d87eff34deb1 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -306,7 +306,8 @@ def makefile(self, mode="r", buffering=None, *,
         """makefile(...) -> an I/O stream connected to the socket
 
         The arguments are as for io.open() after the filename, except the only
-        supported mode values are 'r' (default), 'w' and 'b'.
+        supported mode values are 'r' (default), 'w', 'b', or a combination of
+        those.
         """
         # XXX refactor to share code?
         if not set(mode) <= {"r", "w", "b"}:
@@ -591,16 +592,65 @@ def fromshare(info):
         return socket(0, 0, 0, info)
     __all__.append("fromshare")
 
-if hasattr(_socket, "socketpair"):
+# Origin: https://gist.github.com/4325783, by Geert Jansen.  Public domain.
+# This is used if _socket doesn't natively provide socketpair. It's
+# always defined so that it can be patched in for testing purposes.
+def _fallback_socketpair(family=AF_INET, type=SOCK_STREAM, proto=0):
+    if family == AF_INET:
+        host = _LOCALHOST
+    elif family == AF_INET6:
+        host = _LOCALHOST_V6
+    else:
+        raise ValueError("Only AF_INET and AF_INET6 socket address families "
+                         "are supported")
+    if type != SOCK_STREAM:
+        raise ValueError("Only SOCK_STREAM socket type is supported")
+    if proto != 0:
+        raise ValueError("Only protocol zero is supported")
+
+    # We create a connected TCP socket. Note the trick with
+    # setblocking(False) that prevents us from having to create a thread.
+    lsock = socket(family, type, proto)
+    try:
+        lsock.bind((host, 0))
+        lsock.listen()
+        # On IPv6, ignore flow_info and scope_id
+        addr, port = lsock.getsockname()[:2]
+        csock = socket(family, type, proto)
+        try:
+            csock.setblocking(False)
+            try:
+                csock.connect((addr, port))
+            except (BlockingIOError, InterruptedError):
+                pass
+            csock.setblocking(True)
+            ssock, _ = lsock.accept()
+        except:
+            csock.close()
+            raise
+    finally:
+        lsock.close()
 
-    def socketpair(family=None, type=SOCK_STREAM, proto=0):
-        """socketpair([family[, type[, proto]]]) -> (socket object, socket object)
+    # Authenticating avoids using a connection from something else
+    # able to connect to {host}:{port} instead of us.
+    # We expect only AF_INET and AF_INET6 families.
+    try:
+        if (
+            ssock.getsockname() != csock.getpeername()
+            or csock.getsockname() != ssock.getpeername()
+        ):
+            raise ConnectionError("Unexpected peer connection")
+    except:
+        # getsockname() and getpeername() can fail
+        # if either socket isn't connected.
+        ssock.close()
+        csock.close()
+        raise
 
-        Create a pair of socket objects from the sockets returned by the platform
-        socketpair() function.
-        The arguments are the same as for socket() except the default family is
-        AF_UNIX if defined on the platform; otherwise, the default is AF_INET.
-        """
+    return (ssock, csock)
+
+if hasattr(_socket, "socketpair"):
+    def socketpair(family=None, type=SOCK_STREAM, proto=0):
         if family is None:
             try:
                 family = AF_UNIX
@@ -612,44 +662,7 @@ def socketpair(family=None, type=SOCK_STREAM, proto=0):
         return a, b
 
 else:
-
-    # Origin: https://gist.github.com/4325783, by Geert Jansen.  Public domain.
-    def socketpair(family=AF_INET, type=SOCK_STREAM, proto=0):
-        if family == AF_INET:
-            host = _LOCALHOST
-        elif family == AF_INET6:
-            host = _LOCALHOST_V6
-        else:
-            raise ValueError("Only AF_INET and AF_INET6 socket address families "
-                             "are supported")
-        if type != SOCK_STREAM:
-            raise ValueError("Only SOCK_STREAM socket type is supported")
-        if proto != 0:
-            raise ValueError("Only protocol zero is supported")
-
-        # We create a connected TCP socket. Note the trick with
-        # setblocking(False) that prevents us from having to create a thread.
-        lsock = socket(family, type, proto)
-        try:
-            lsock.bind((host, 0))
-            lsock.listen()
-            # On IPv6, ignore flow_info and scope_id
-            addr, port = lsock.getsockname()[:2]
-            csock = socket(family, type, proto)
-            try:
-                csock.setblocking(False)
-                try:
-                    csock.connect((addr, port))
-                except (BlockingIOError, InterruptedError):
-                    pass
-                csock.setblocking(True)
-                ssock, _ = lsock.accept()
-            except:
-                csock.close()
-                raise
-        finally:
-            lsock.close()
-        return (ssock, csock)
+    socketpair = _fallback_socketpair
     __all__.append("socketpair")
 
 socketpair.__doc__ = """socketpair([family[, type[, proto]]]) -> (socket object, socket object)
@@ -918,7 +931,9 @@ def create_server(address, *, family=AF_INET, backlog=None, reuse_port=False,
                 # Fail later on bind(), for platforms which may not
                 # support this option.
                 pass
-        if reuse_port:
+        # Since Linux 6.12.9, SO_REUSEPORT is not allowed
+        # on other address families than AF_INET/AF_INET6.
+        if reuse_port and family in (AF_INET, AF_INET6):
             sock.setsockopt(SOL_SOCKET, SO_REUSEPORT, 1)
         if has_ipv6 and family == AF_INET6:
             if dualstack_ipv6:
diff --git a/Lib/socketserver.py b/Lib/socketserver.py
index cd028ef1c63b85..35b2723de3babe 100644
--- a/Lib/socketserver.py
+++ b/Lib/socketserver.py
@@ -468,7 +468,12 @@ def server_bind(self):
         """
         if self.allow_reuse_address and hasattr(socket, "SO_REUSEADDR"):
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-        if self.allow_reuse_port and hasattr(socket, "SO_REUSEPORT"):
+        # Since Linux 6.12.9, SO_REUSEPORT is not allowed
+        # on other address families than AF_INET/AF_INET6.
+        if (
+            self.allow_reuse_port and hasattr(socket, "SO_REUSEPORT")
+            and self.address_family in (socket.AF_INET, socket.AF_INET6)
+        ):
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
         self.socket.bind(self.server_address)
         self.server_address = self.socket.getsockname()
diff --git a/Lib/ssl.py b/Lib/ssl.py
index cc685c2cc405ab..c8703b046cfd4b 100644
--- a/Lib/ssl.py
+++ b/Lib/ssl.py
@@ -513,18 +513,17 @@ def set_alpn_protocols(self, alpn_protocols):
         self._set_alpn_protocols(protos)
 
     def _load_windows_store_certs(self, storename, purpose):
-        certs = bytearray()
         try:
             for cert, encoding, trust in enum_certificates(storename):
                 # CA certs are never PKCS#7 encoded
                 if encoding == "x509_asn":
                     if trust is True or purpose.oid in trust:
-                        certs.extend(cert)
+                        try:
+                            self.load_verify_locations(cadata=cert)
+                        except SSLError as exc:
+                            warnings.warn(f"Bad certificate in Windows certificate store: {exc!s}")
         except PermissionError:
             warnings.warn("unable to enumerate Windows certificate store")
-        if certs:
-            self.load_verify_locations(cadata=certs)
-        return certs
 
     def load_default_certs(self, purpose=Purpose.SERVER_AUTH):
         if not isinstance(purpose, _ASN1Object):
@@ -1165,11 +1164,21 @@ def getpeercert(self, binary_form=False):
 
     @_sslcopydoc
     def get_verified_chain(self):
-        return self._sslobj.get_verified_chain()
+        chain = self._sslobj.get_verified_chain()
+
+        if chain is None:
+            return []
+
+        return [cert.public_bytes(_ssl.ENCODING_DER) for cert in chain]
 
     @_sslcopydoc
     def get_unverified_chain(self):
-        return self._sslobj.get_unverified_chain()
+        chain = self._sslobj.get_unverified_chain()
+
+        if chain is None:
+            return []
+
+        return [cert.public_bytes(_ssl.ENCODING_DER) for cert in chain]
 
     @_sslcopydoc
     def selected_npn_protocol(self):
diff --git a/Lib/stat.py b/Lib/stat.py
index 9167ab185944fb..1b4ed1ebc940ef 100644
--- a/Lib/stat.py
+++ b/Lib/stat.py
@@ -2,7 +2,6 @@
 
 Suggested usage: from stat import *
 """
-import sys
 
 # Indices for stat struct members in the tuple returned by os.stat()
 
diff --git a/Lib/statistics.py b/Lib/statistics.py
index c2f4fe8e054d3d..ad4a94219cf38c 100644
--- a/Lib/statistics.py
+++ b/Lib/statistics.py
@@ -11,7 +11,7 @@
 Function            Description
 ==================  ==================================================
 mean                Arithmetic mean (average) of data.
-fmean               Fast, floating point arithmetic mean.
+fmean               Fast, floating-point arithmetic mean.
 geometric_mean      Geometric mean of data.
 harmonic_mean       Harmonic mean of data.
 median              Median (middle value) of data.
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 212fdf5b095511..98b98be01ac315 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -43,10 +43,8 @@
 import builtins
 import errno
 import io
-import locale
 import os
 import time
-import signal
 import sys
 import threading
 import warnings
@@ -144,6 +142,8 @@ def __init__(self, returncode, cmd, output=None, stderr=None):
 
     def __str__(self):
         if self.returncode and self.returncode < 0:
+            # Lazy import to improve module import time
+            import signal
             try:
                 return "Command '%s' died with %r." % (
                         self.cmd, signal.Signals(-self.returncode))
@@ -381,12 +381,14 @@ def _text_encoding():
     if sys.flags.utf8_mode:
         return "utf-8"
     else:
+        # Lazy import to improve module import time
+        import locale
         return locale.getencoding()
 
 
 def call(*popenargs, timeout=None, **kwargs):
     """Run command with arguments.  Wait for command to complete or
-    timeout, then return the returncode attribute.
+    for timeout seconds, then return the returncode attribute.
 
     The arguments are the same as for the Popen constructor.  Example:
 
@@ -523,8 +525,8 @@ def run(*popenargs,
     in the returncode attribute, and output & stderr attributes if those streams
     were captured.
 
-    If timeout is given, and the process takes too long, a TimeoutExpired
-    exception will be raised.
+    If timeout (seconds) is given and the process takes too long,
+     a TimeoutExpired exception will be raised.
 
     There is an optional argument "input", allowing you to
     pass bytes or a string to the subprocess's stdin.  If you use this argument
@@ -842,7 +844,7 @@ def __init__(self, args, bufsize=-1, executable=None,
             raise TypeError("bufsize must be an integer")
 
         if stdout is STDOUT:
-             raise ValueError("STDOUT can only be used for stderr")
+            raise ValueError("STDOUT can only be used for stderr")
 
         if pipesize is None:
             pipesize = -1  # Restore default
@@ -1665,6 +1667,9 @@ def send_signal(self, sig):
             # Don't signal a process that we know has already died.
             if self.returncode is not None:
                 return
+
+            # Lazy import to improve module import time
+            import signal
             if sig == signal.SIGTERM:
                 self.terminate()
             elif sig == signal.CTRL_C_EVENT:
@@ -1766,6 +1771,9 @@ def _posix_spawn(self, args, executable, env, restore_signals, close_fds,
             """Execute program using os.posix_spawn()."""
             kwargs = {}
             if restore_signals:
+                # Lazy import to improve module import time
+                import signal
+
                 # See _Py_RestoreSignals() in Python/pylifecycle.c
                 sigset = []
                 for signame in ('SIGPIPE', 'SIGXFZ', 'SIGXFSZ'):
@@ -2215,9 +2223,13 @@ def send_signal(self, sig):
         def terminate(self):
             """Terminate the process with SIGTERM
             """
+            # Lazy import to improve module import time
+            import signal
             self.send_signal(signal.SIGTERM)
 
         def kill(self):
             """Kill the process with SIGKILL
             """
+            # Lazy import to improve module import time
+            import signal
             self.send_signal(signal.SIGKILL)
diff --git a/Lib/symtable.py b/Lib/symtable.py
index 17f820abd56660..672ec0ce1ff8fe 100644
--- a/Lib/symtable.py
+++ b/Lib/symtable.py
@@ -6,8 +6,9 @@
      LOCAL, GLOBAL_IMPLICIT, GLOBAL_EXPLICIT, CELL)
 
 import weakref
+from enum import StrEnum
 
-__all__ = ["symtable", "SymbolTable", "Class", "Function", "Symbol"]
+__all__ = ["symtable", "SymbolTableType", "SymbolTable", "Class", "Function", "Symbol"]
 
 def symtable(code, filename, compile_type):
     """ Return the toplevel *SymbolTable* for the source code.
@@ -39,6 +40,16 @@ def __call__(self, table, filename):
 _newSymbolTable = SymbolTableFactory()
 
 
+class SymbolTableType(StrEnum):
+    MODULE = "module"
+    FUNCTION = "function"
+    CLASS = "class"
+    ANNOTATION = "annotation"
+    TYPE_ALIAS = "type alias"
+    TYPE_PARAMETERS = "type parameters"
+    TYPE_VARIABLE = "type variable"
+
+
 class SymbolTable:
 
     def __init__(self, raw_table, filename):
@@ -62,23 +73,23 @@ def __repr__(self):
     def get_type(self):
         """Return the type of the symbol table.
 
-        The values returned are 'class', 'module', 'function',
-        'annotation', 'TypeVar bound', 'type alias', and 'type parameter'.
+        The value returned is one of the values in
+        the ``SymbolTableType`` enumeration.
         """
         if self._table.type == _symtable.TYPE_MODULE:
-            return "module"
+            return SymbolTableType.MODULE
         if self._table.type == _symtable.TYPE_FUNCTION:
-            return "function"
+            return SymbolTableType.FUNCTION
         if self._table.type == _symtable.TYPE_CLASS:
-            return "class"
+            return SymbolTableType.CLASS
         if self._table.type == _symtable.TYPE_ANNOTATION:
-            return "annotation"
-        if self._table.type == _symtable.TYPE_TYPE_VAR_BOUND:
-            return "TypeVar bound"
+            return SymbolTableType.ANNOTATION
         if self._table.type == _symtable.TYPE_TYPE_ALIAS:
-            return "type alias"
-        if self._table.type == _symtable.TYPE_TYPE_PARAM:
-            return "type parameter"
+            return SymbolTableType.TYPE_ALIAS
+        if self._table.type == _symtable.TYPE_TYPE_PARAMETERS:
+            return SymbolTableType.TYPE_PARAMETERS
+        if self._table.type == _symtable.TYPE_TYPE_VARIABLE:
+            return SymbolTableType.TYPE_VARIABLE
         assert False, f"unexpected type: {self._table.type}"
 
     def get_id(self):
@@ -217,8 +228,37 @@ def get_methods(self):
         """
         if self.__methods is None:
             d = {}
+
+            def is_local_symbol(ident):
+                flags = self._table.symbols.get(ident, 0)
+                return ((flags >> SCOPE_OFF) & SCOPE_MASK) == LOCAL
+
             for st in self._table.children:
-                d[st.name] = 1
+                # pick the function-like symbols that are local identifiers
+                if is_local_symbol(st.name):
+                    match st.type:
+                        case _symtable.TYPE_FUNCTION:
+                            # generators are of type TYPE_FUNCTION with a ".0"
+                            # parameter as a first parameter (which makes them
+                            # distinguishable from a function named 'genexpr')
+                            if st.name == 'genexpr' and '.0' in st.varnames:
+                                continue
+                            d[st.name] = 1
+                        case _symtable.TYPE_TYPE_PARAMETERS:
+                            # Get the function-def block in the annotation
+                            # scope 'st' with the same identifier, if any.
+                            scope_name = st.name
+                            for c in st.children:
+                                if c.name == scope_name and c.type == _symtable.TYPE_FUNCTION:
+                                    # A generic generator of type TYPE_FUNCTION
+                                    # cannot be a direct child of 'st' (but it
+                                    # can be a descendant), e.g.:
+                                    #
+                                    # class A:
+                                    #   type genexpr[genexpr] = (x for x in [])
+                                    assert scope_name != 'genexpr' or '.0' not in c.varnames
+                                    d[scope_name] = 1
+                                    break
             self.__methods = tuple(d)
         return self.__methods
 
diff --git a/Lib/sysconfig/__init__.py b/Lib/sysconfig/__init__.py
index 98a14e5d3a3187..43eda00ea92c6e 100644
--- a/Lib/sysconfig/__init__.py
+++ b/Lib/sysconfig/__init__.py
@@ -27,10 +27,10 @@
 
 _INSTALL_SCHEMES = {
     'posix_prefix': {
-        'stdlib': '{installed_base}/{platlibdir}/{implementation_lower}{py_version_short}',
-        'platstdlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}',
-        'purelib': '{base}/lib/{implementation_lower}{py_version_short}/site-packages',
-        'platlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}/site-packages',
+        'stdlib': '{installed_base}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+        'platstdlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+        'purelib': '{base}/lib/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
+        'platlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
         'include':
             '{installed_base}/include/{implementation_lower}{py_version_short}{abiflags}',
         'platinclude':
@@ -77,10 +77,10 @@
     # Downstream distributors who patch posix_prefix/nt scheme are encouraged to
     # leave the following schemes unchanged
     'posix_venv': {
-        'stdlib': '{installed_base}/{platlibdir}/{implementation_lower}{py_version_short}',
-        'platstdlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}',
-        'purelib': '{base}/lib/{implementation_lower}{py_version_short}/site-packages',
-        'platlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}/site-packages',
+        'stdlib': '{installed_base}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+        'platstdlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+        'purelib': '{base}/lib/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
+        'platlib': '{platbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
         'include':
             '{installed_base}/include/{implementation_lower}{py_version_short}{abiflags}',
         'platinclude':
@@ -148,11 +148,11 @@ def joinuser(*args):
             'data': '{userbase}',
             },
         'posix_user': {
-            'stdlib': '{userbase}/{platlibdir}/{implementation_lower}{py_version_short}',
-            'platstdlib': '{userbase}/{platlibdir}/{implementation_lower}{py_version_short}',
-            'purelib': '{userbase}/lib/{implementation_lower}{py_version_short}/site-packages',
-            'platlib': '{userbase}/lib/{implementation_lower}{py_version_short}/site-packages',
-            'include': '{userbase}/include/{implementation_lower}{py_version_short}',
+            'stdlib': '{userbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+            'platstdlib': '{userbase}/{platlibdir}/{implementation_lower}{py_version_short}{abi_thread}',
+            'purelib': '{userbase}/lib/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
+            'platlib': '{userbase}/lib/{implementation_lower}{py_version_short}{abi_thread}/site-packages',
+            'include': '{userbase}/include/{implementation_lower}{py_version_short}{abi_thread}',
             'scripts': '{userbase}/bin',
             'data': '{userbase}',
             },
@@ -173,9 +173,7 @@ def joinuser(*args):
 _PY_VERSION = sys.version.split()[0]
 _PY_VERSION_SHORT = f'{sys.version_info[0]}.{sys.version_info[1]}'
 _PY_VERSION_SHORT_NO_DOT = f'{sys.version_info[0]}{sys.version_info[1]}'
-_PREFIX = os.path.normpath(sys.prefix)
 _BASE_PREFIX = os.path.normpath(sys.base_prefix)
-_EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
 _BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
 # Mutex guarding initialization of _CONFIG_VARS.
 _CONFIG_VARS_LOCK = threading.RLock()
@@ -340,7 +338,20 @@ def _init_posix(vars):
     """Initialize the module as appropriate for POSIX systems."""
     # _sysconfigdata is generated at build time, see _generate_posix_vars()
     name = _get_sysconfigdata_name()
-    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
+
+    # For cross builds, the path to the target's sysconfigdata must be specified
+    # so it can be imported. It cannot be in PYTHONPATH, as foreign modules in
+    # sys.path can cause crashes when loaded by the host interpreter.
+    # Rely on truthiness as a valueless env variable is still an empty string.
+    # See OS X note in _generate_posix_vars re _sysconfigdata.
+    if (path := os.environ.get('_PYTHON_SYSCONFIGDATA_PATH')):
+        from importlib.machinery import FileFinder, SourceFileLoader, SOURCE_SUFFIXES
+        from importlib.util import module_from_spec
+        spec = FileFinder(path, (SourceFileLoader, SOURCE_SUFFIXES)).find_spec(name)
+        _temp = module_from_spec(spec)
+        spec.loader.exec_module(_temp)
+    else:
+        _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
     build_time_vars = _temp.build_time_vars
     vars.update(build_time_vars)
 
@@ -453,8 +464,10 @@ def _init_config_vars():
     # Normalized versions of prefix and exec_prefix are handy to have;
     # in fact, these are the standard versions used most places in the
     # Distutils.
-    _CONFIG_VARS['prefix'] = _PREFIX
-    _CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
+    _PREFIX = os.path.normpath(sys.prefix)
+    _EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
+    _CONFIG_VARS['prefix'] = _PREFIX  # FIXME: This gets overwriten by _init_posix.
+    _CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX  # FIXME: This gets overwriten by _init_posix.
     _CONFIG_VARS['py_version'] = _PY_VERSION
     _CONFIG_VARS['py_version_short'] = _PY_VERSION_SHORT
     _CONFIG_VARS['py_version_nodot'] = _PY_VERSION_SHORT_NO_DOT
@@ -487,6 +500,9 @@ def _init_config_vars():
         # the init-function.
         _CONFIG_VARS['userbase'] = _getuserbase()
 
+    # e.g., 't' for free-threaded or '' for default build
+    _CONFIG_VARS['abi_thread'] = 't' if _CONFIG_VARS.get('Py_GIL_DISABLED') else ''
+
     # Always convert srcdir to an absolute path
     srcdir = _CONFIG_VARS.get('srcdir', _PROJECT_BASE)
     if os.name == 'posix':
@@ -524,6 +540,7 @@ def get_config_vars(*args):
     With arguments, return a list of values that result from looking up
     each argument in the configuration variable dictionary.
     """
+    global _CONFIG_VARS_INITIALIZED
 
     # Avoid claiming the lock once initialization is complete.
     if not _CONFIG_VARS_INITIALIZED:
@@ -534,6 +551,15 @@ def get_config_vars(*args):
             # don't re-enter init_config_vars().
             if _CONFIG_VARS is None:
                 _init_config_vars()
+    else:
+        # If the site module initialization happened after _CONFIG_VARS was
+        # initialized, a virtual environment might have been activated, resulting in
+        # variables like sys.prefix changing their value, so we need to re-init the
+        # config vars (see GH-126789).
+        if _CONFIG_VARS['base'] != os.path.normpath(sys.prefix):
+            with _CONFIG_VARS_LOCK:
+                _CONFIG_VARS_INITIALIZED = False
+                _init_config_vars()
 
     if args:
         vals = []
@@ -639,7 +665,7 @@ def get_platform():
             release = m.group()
     elif osname[:6] == "darwin":
         if sys.platform == "ios":
-            release = get_config_vars().get("IPHONEOS_DEPLOYMENT_TARGET", "12.0")
+            release = get_config_vars().get("IPHONEOS_DEPLOYMENT_TARGET", "13.0")
             osname = sys.platform
             machine = sys.implementation._multiarch
         else:
@@ -655,6 +681,10 @@ def get_python_version():
     return _PY_VERSION_SHORT
 
 
+def _get_python_version_abi():
+    return _PY_VERSION_SHORT + get_config_var("abi_thread")
+
+
 def expand_makefile_vars(s, vars):
     """Expand Makefile-style variables -- "${foo}" or "$(foo)" -- in
     'string' according to 'vars' (a dictionary mapping variable names to
@@ -665,6 +695,9 @@ def expand_makefile_vars(s, vars):
     """
     import re
 
+    _findvar1_rx = r"\$\(([A-Za-z][A-Za-z0-9_]*)\)"
+    _findvar2_rx = r"\${([A-Za-z][A-Za-z0-9_]*)}"
+
     # This algorithm does multiple expansion, so if vars['foo'] contains
     # "${bar}", it will expand ${foo} to ${bar}, and then expand
     # ${bar}... and so forth.  This is fine as long as 'vars' comes from
diff --git a/Lib/tabnanny.py b/Lib/tabnanny.py
index e2ac6837f157d5..d06c4c221e9341 100755
--- a/Lib/tabnanny.py
+++ b/Lib/tabnanny.py
@@ -107,14 +107,14 @@ def check(file):
         errprint("%r: Token Error: %s" % (file, msg))
         return
 
-    except SyntaxError as msg:
-        errprint("%r: Token Error: %s" % (file, msg))
-        return
-
     except IndentationError as msg:
         errprint("%r: Indentation Error: %s" % (file, msg))
         return
 
+    except SyntaxError as msg:
+        errprint("%r: Syntax Error: %s" % (file, msg))
+        return
+
     except NannyNag as nag:
         badline = nag.get_lineno()
         line = nag.get_line()
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 5fc6183ffcf93c..ea036193411771 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -846,6 +846,9 @@ def data_filter(member, dest_path):
 # Sentinel for replace() defaults, meaning "don't change the attribute"
 _KEEP = object()
 
+# Header length is digits followed by a space.
+_header_length_prefix_re = re.compile(br"([0-9]{1,20}) ")
+
 class TarInfo(object):
     """Informational class which holds the details about an
        archive member given by a tar header block.
@@ -1433,37 +1436,59 @@ def _proc_pax(self, tarfile):
         else:
             pax_headers = tarfile.pax_headers.copy()
 
-        # Check if the pax header contains a hdrcharset field. This tells us
-        # the encoding of the path, linkpath, uname and gname fields. Normally,
-        # these fields are UTF-8 encoded but since POSIX.1-2008 tar
-        # implementations are allowed to store them as raw binary strings if
-        # the translation to UTF-8 fails.
-        match = re.search(br"\d+ hdrcharset=([^\n]+)\n", buf)
-        if match is not None:
-            pax_headers["hdrcharset"] = match.group(1).decode("utf-8")
-
-        # For the time being, we don't care about anything other than "BINARY".
-        # The only other value that is currently allowed by the standard is
-        # "ISO-IR 10646 2000 UTF-8" in other words UTF-8.
-        hdrcharset = pax_headers.get("hdrcharset")
-        if hdrcharset == "BINARY":
-            encoding = tarfile.encoding
-        else:
-            encoding = "utf-8"
-
         # Parse pax header information. A record looks like that:
         # "%d %s=%s\n" % (length, keyword, value). length is the size
         # of the complete record including the length field itself and
-        # the newline. keyword and value are both UTF-8 encoded strings.
-        regex = re.compile(br"(\d+) ([^=]+)=")
+        # the newline.
         pos = 0
-        while match := regex.match(buf, pos):
-            length, keyword = match.groups()
-            length = int(length)
-            if length == 0:
+        encoding = None
+        raw_headers = []
+        while len(buf) > pos and buf[pos] != 0x00:
+            if not (match := _header_length_prefix_re.match(buf, pos)):
+                raise InvalidHeaderError("invalid header")
+            try:
+                length = int(match.group(1))
+            except ValueError:
+                raise InvalidHeaderError("invalid header")
+            # Headers must be at least 5 bytes, shortest being '5 x=\n'.
+            # Value is allowed to be empty.
+            if length < 5:
+                raise InvalidHeaderError("invalid header")
+            if pos + length > len(buf):
+                raise InvalidHeaderError("invalid header")
+
+            header_value_end_offset = match.start(1) + length - 1  # Last byte of the header
+            keyword_and_value = buf[match.end(1) + 1:header_value_end_offset]
+            raw_keyword, equals, raw_value = keyword_and_value.partition(b"=")
+
+            # Check the framing of the header. The last character must be '\n' (0x0A)
+            if not raw_keyword or equals != b"=" or buf[header_value_end_offset] != 0x0A:
                 raise InvalidHeaderError("invalid header")
-            value = buf[match.end(2) + 1:match.start(1) + length - 1]
+            raw_headers.append((length, raw_keyword, raw_value))
+
+            # Check if the pax header contains a hdrcharset field. This tells us
+            # the encoding of the path, linkpath, uname and gname fields. Normally,
+            # these fields are UTF-8 encoded but since POSIX.1-2008 tar
+            # implementations are allowed to store them as raw binary strings if
+            # the translation to UTF-8 fails. For the time being, we don't care about
+            # anything other than "BINARY". The only other value that is currently
+            # allowed by the standard is "ISO-IR 10646 2000 UTF-8" in other words UTF-8.
+            # Note that we only follow the initial 'hdrcharset' setting to preserve
+            # the initial behavior of the 'tarfile' module.
+            if raw_keyword == b"hdrcharset" and encoding is None:
+                if raw_value == b"BINARY":
+                    encoding = tarfile.encoding
+                else:  # This branch ensures only the first 'hdrcharset' header is used.
+                    encoding = "utf-8"
 
+            pos += length
+
+        # If no explicit hdrcharset is set, we use UTF-8 as a default.
+        if encoding is None:
+            encoding = "utf-8"
+
+        # After parsing the raw headers we can decode them to text.
+        for length, raw_keyword, raw_value in raw_headers:
             # Normally, we could just use "utf-8" as the encoding and "strict"
             # as the error handler, but we better not take the risk. For
             # example, GNU tar <= 1.23 is known to store filenames it cannot
@@ -1471,17 +1496,16 @@ def _proc_pax(self, tarfile):
             # hdrcharset=BINARY header).
             # We first try the strict standard encoding, and if that fails we
             # fall back on the user's encoding and error handler.
-            keyword = self._decode_pax_field(keyword, "utf-8", "utf-8",
+            keyword = self._decode_pax_field(raw_keyword, "utf-8", "utf-8",
                     tarfile.errors)
             if keyword in PAX_NAME_FIELDS:
-                value = self._decode_pax_field(value, encoding, tarfile.encoding,
+                value = self._decode_pax_field(raw_value, encoding, tarfile.encoding,
                         tarfile.errors)
             else:
-                value = self._decode_pax_field(value, "utf-8", "utf-8",
+                value = self._decode_pax_field(raw_value, "utf-8", "utf-8",
                         tarfile.errors)
 
             pax_headers[keyword] = value
-            pos += length
 
         # Fetch the next header.
         try:
@@ -1496,7 +1520,7 @@ def _proc_pax(self, tarfile):
 
         elif "GNU.sparse.size" in pax_headers:
             # GNU extended sparse format version 0.0.
-            self._proc_gnusparse_00(next, pax_headers, buf)
+            self._proc_gnusparse_00(next, raw_headers)
 
         elif pax_headers.get("GNU.sparse.major") == "1" and pax_headers.get("GNU.sparse.minor") == "0":
             # GNU extended sparse format version 1.0.
@@ -1518,15 +1542,24 @@ def _proc_pax(self, tarfile):
 
         return next
 
-    def _proc_gnusparse_00(self, next, pax_headers, buf):
+    def _proc_gnusparse_00(self, next, raw_headers):
         """Process a GNU tar extended sparse header, version 0.0.
         """
         offsets = []
-        for match in re.finditer(br"\d+ GNU.sparse.offset=(\d+)\n", buf):
-            offsets.append(int(match.group(1)))
         numbytes = []
-        for match in re.finditer(br"\d+ GNU.sparse.numbytes=(\d+)\n", buf):
-            numbytes.append(int(match.group(1)))
+        for _, keyword, value in raw_headers:
+            if keyword == b"GNU.sparse.offset":
+                try:
+                    offsets.append(int(value.decode()))
+                except ValueError:
+                    raise InvalidHeaderError("invalid header")
+
+            elif keyword == b"GNU.sparse.numbytes":
+                try:
+                    numbytes.append(int(value.decode()))
+                except ValueError:
+                    raise InvalidHeaderError("invalid header")
+
         next.sparse = list(zip(offsets, numbytes))
 
     def _proc_gnusparse_01(self, next, pax_headers):
diff --git a/Lib/test/_test_eintr.py b/Lib/test/_test_eintr.py
index 15586f15dfab30..493932d6c6d441 100644
--- a/Lib/test/_test_eintr.py
+++ b/Lib/test/_test_eintr.py
@@ -18,6 +18,7 @@
 import socket
 import subprocess
 import sys
+import textwrap
 import time
 import unittest
 
@@ -492,29 +493,31 @@ def test_devpoll(self):
         self.check_elapsed_time(dt)
 
 
-class FNTLEINTRTest(EINTRBaseTest):
+class FCNTLEINTRTest(EINTRBaseTest):
     def _lock(self, lock_func, lock_name):
         self.addCleanup(os_helper.unlink, os_helper.TESTFN)
-        code = '\n'.join((
-            "import fcntl, time",
-            "with open('%s', 'wb') as f:" % os_helper.TESTFN,
-            "   fcntl.%s(f, fcntl.LOCK_EX)" % lock_name,
-            "   time.sleep(%s)" % self.sleep_time))
-        start_time = time.monotonic()
-        proc = self.subprocess(code)
+        rd1, wr1 = os.pipe()
+        rd2, wr2 = os.pipe()
+        for fd in (rd1, wr1, rd2, wr2):
+            self.addCleanup(os.close, fd)
+        code = textwrap.dedent(f"""
+            import fcntl, os, time
+            with open('{os_helper.TESTFN}', 'wb') as f:
+                fcntl.{lock_name}(f, fcntl.LOCK_EX)
+                os.write({wr1}, b"ok")
+                _ = os.read({rd2}, 2)  # wait for parent process
+                time.sleep({self.sleep_time})
+        """)
+        proc = self.subprocess(code, pass_fds=[wr1, rd2])
         with kill_on_error(proc):
             with open(os_helper.TESTFN, 'wb') as f:
                 # synchronize the subprocess
+                ok = os.read(rd1, 2)
+                self.assertEqual(ok, b"ok")
+
+                # notify the child that the parent is ready
                 start_time = time.monotonic()
-                for _ in support.sleeping_retry(support.LONG_TIMEOUT, error=False):
-                    try:
-                        lock_func(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
-                        lock_func(f, fcntl.LOCK_UN)
-                    except BlockingIOError:
-                        break
-                else:
-                    dt = time.monotonic() - start_time
-                    raise Exception("failed to sync child in %.1f sec" % dt)
+                os.write(wr2, b"go")
 
                 # the child locked the file just a moment ago for 'sleep_time' seconds
                 # that means that the lock below will block for 'sleep_time' minus some
diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index 46afdfca331a23..84c8fa146709f6 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -12,6 +12,7 @@
 import sys
 import os
 import gc
+import importlib
 import errno
 import functools
 import signal
@@ -19,10 +20,11 @@
 import socket
 import random
 import logging
+import shutil
 import subprocess
 import struct
+import tempfile
 import operator
-import pathlib
 import pickle
 import weakref
 import warnings
@@ -255,6 +257,9 @@ def __call__(self, *args, **kwds):
 class BaseTestCase(object):
 
     ALLOWED_TYPES = ('processes', 'manager', 'threads')
+    # If not empty, limit which start method suites run this class.
+    START_METHODS: set[str] = set()
+    start_method = None  # set by install_tests_in_module_dict()
 
     def assertTimingAlmostEqual(self, a, b):
         if CHECK_TIMINGS:
@@ -324,8 +329,9 @@ def test_set_executable(self):
             self.skipTest(f'test not appropriate for {self.TYPE}')
         paths = [
             sys.executable,               # str
-            sys.executable.encode(),      # bytes
-            pathlib.Path(sys.executable)  # os.PathLike
+            os.fsencode(sys.executable),  # bytes
+            os_helper.FakePath(sys.executable),  # os.PathLike
+            os_helper.FakePath(os.fsencode(sys.executable)),  # os.PathLike bytes
         ]
         for path in paths:
             self.set_executable(path)
@@ -1332,6 +1338,23 @@ def _on_queue_feeder_error(e, obj):
         self.assertTrue(not_serializable_obj.reduce_was_called)
         self.assertTrue(not_serializable_obj.on_queue_feeder_error_was_called)
 
+    def test_closed_queue_empty_exceptions(self):
+        # Assert that checking the emptiness of an unused closed queue
+        # does not raise an OSError. The rationale is that q.close() is
+        # a no-op upon construction and becomes effective once the queue
+        # has been used (e.g., by calling q.put()).
+        for q in multiprocessing.Queue(), multiprocessing.JoinableQueue():
+            q.close()  # this is a no-op since the feeder thread is None
+            q.join_thread()  # this is also a no-op
+            self.assertTrue(q.empty())
+
+        for q in multiprocessing.Queue(), multiprocessing.JoinableQueue():
+            q.put('foo')  # make sure that the queue is 'used'
+            q.close()  # close the feeder thread
+            q.join_thread()  # make sure to join the feeder thread
+            with self.assertRaisesRegex(OSError, 'is closed'):
+                q.empty()
+
     def test_closed_queue_put_get_exceptions(self):
         for q in multiprocessing.Queue(), multiprocessing.JoinableQueue():
             q.close()
@@ -1345,6 +1368,66 @@ def test_closed_queue_put_get_exceptions(self):
 
 class _TestLock(BaseTestCase):
 
+    @staticmethod
+    def _acquire(lock, l=None):
+        lock.acquire()
+        if l is not None:
+            l.append(repr(lock))
+
+    @staticmethod
+    def _acquire_event(lock, event):
+        lock.acquire()
+        event.set()
+        time.sleep(1.0)
+
+    def test_repr_lock(self):
+        if self.TYPE != 'processes':
+            self.skipTest('test not appropriate for {}'.format(self.TYPE))
+
+        lock = self.Lock()
+        self.assertEqual(f'<Lock(owner=None)>', repr(lock))
+
+        lock.acquire()
+        self.assertEqual(f'<Lock(owner=MainProcess)>', repr(lock))
+        lock.release()
+
+        tname = 'T1'
+        l = []
+        t = threading.Thread(target=self._acquire,
+                             args=(lock, l),
+                             name=tname)
+        t.start()
+        time.sleep(0.1)
+        self.assertEqual(f'<Lock(owner=MainProcess|{tname})>', l[0])
+        lock.release()
+
+        t = threading.Thread(target=self._acquire,
+                             args=(lock,),
+                             name=tname)
+        t.start()
+        time.sleep(0.1)
+        self.assertEqual('<Lock(owner=SomeOtherThread)>', repr(lock))
+        lock.release()
+
+        pname = 'P1'
+        l = multiprocessing.Manager().list()
+        p = self.Process(target=self._acquire,
+                         args=(lock, l),
+                         name=pname)
+        p.start()
+        p.join()
+        self.assertEqual(f'<Lock(owner={pname})>', l[0])
+
+        lock = self.Lock()
+        event = self.Event()
+        p = self.Process(target=self._acquire_event,
+                         args=(lock, event),
+                         name='P2')
+        p.start()
+        event.wait()
+        self.assertEqual(f'<Lock(owner=SomeOtherProcess)>', repr(lock))
+        p.terminate()
+
     def test_lock(self):
         lock = self.Lock()
         self.assertEqual(lock.acquire(), True)
@@ -1352,6 +1435,68 @@ def test_lock(self):
         self.assertEqual(lock.release(), None)
         self.assertRaises((ValueError, threading.ThreadError), lock.release)
 
+    @staticmethod
+    def _acquire_release(lock, timeout, l=None, n=1):
+        for _ in range(n):
+            lock.acquire()
+        if l is not None:
+            l.append(repr(lock))
+        time.sleep(timeout)
+        for _ in range(n):
+            lock.release()
+
+    def test_repr_rlock(self):
+        if self.TYPE != 'processes':
+            self.skipTest('test not appropriate for {}'.format(self.TYPE))
+
+        lock = self.RLock()
+        self.assertEqual('<RLock(None, 0)>', repr(lock))
+
+        n = 3
+        for _ in range(n):
+            lock.acquire()
+        self.assertEqual(f'<RLock(MainProcess, {n})>', repr(lock))
+        for _ in range(n):
+            lock.release()
+
+        t, l = [], []
+        for i in range(n):
+            t.append(threading.Thread(target=self._acquire_release,
+                                      args=(lock, 0.1, l, i+1),
+                                      name=f'T{i+1}'))
+            t[-1].start()
+        for t_ in t:
+            t_.join()
+        for i in range(n):
+            self.assertIn(f'<RLock(MainProcess|T{i+1}, {i+1})>', l)
+
+
+        t = threading.Thread(target=self._acquire_release,
+                                 args=(lock, 0.2),
+                                 name=f'T1')
+        t.start()
+        time.sleep(0.1)
+        self.assertEqual('<RLock(SomeOtherThread, nonzero)>', repr(lock))
+        time.sleep(0.2)
+
+        pname = 'P1'
+        l = multiprocessing.Manager().list()
+        p = self.Process(target=self._acquire_release,
+                         args=(lock, 0.1, l),
+                         name=pname)
+        p.start()
+        p.join()
+        self.assertEqual(f'<RLock({pname}, 1)>', l[0])
+
+        event = self.Event()
+        lock = self.RLock()
+        p = self.Process(target=self._acquire_event,
+                         args=(lock, event))
+        p.start()
+        event.wait()
+        self.assertEqual('<RLock(SomeOtherProcess, nonzero)>', repr(lock))
+        p.join()
+
     def test_rlock(self):
         lock = self.RLock()
         self.assertEqual(lock.acquire(), True)
@@ -5730,6 +5875,8 @@ def test_resource_tracker_sigterm(self):
         # Catchable signal (ignored by semaphore tracker)
         self.check_resource_tracker_death(signal.SIGTERM, False)
 
+    @unittest.skipIf(sys.platform.startswith("netbsd"),
+                     "gh-125620: Skip on NetBSD due to long wait for SIGKILL process termination.")
     def test_resource_tracker_sigkill(self):
         # Uncatchable signal.
         self.check_resource_tracker_death(signal.SIGKILL, True)
@@ -5803,6 +5950,27 @@ def test_resource_tracker_exit_code(self):
                     cleanup=cleanup,
                 )
 
+    @unittest.skipUnless(hasattr(signal, "pthread_sigmask"), "pthread_sigmask is not available")
+    def test_resource_tracker_blocked_signals(self):
+        #
+        # gh-127586: Check that resource_tracker does not override blocked signals of caller.
+        #
+        from multiprocessing.resource_tracker import ResourceTracker
+        orig_sigmask = signal.pthread_sigmask(signal.SIG_BLOCK, set())
+        signals = {signal.SIGTERM, signal.SIGINT, signal.SIGUSR1}
+
+        try:
+            for sig in signals:
+                signal.pthread_sigmask(signal.SIG_SETMASK, {sig})
+                self.assertEqual(signal.pthread_sigmask(signal.SIG_BLOCK, set()), {sig})
+                tracker = ResourceTracker()
+                tracker.ensure_running()
+                self.assertEqual(signal.pthread_sigmask(signal.SIG_BLOCK, set()), {sig})
+                tracker._stop()
+        finally:
+            # restore sigmask to what it was before executing test
+            signal.pthread_sigmask(signal.SIG_SETMASK, orig_sigmask)
+
 class TestSimpleQueue(unittest.TestCase):
 
     @classmethod
@@ -5815,6 +5983,15 @@ def _test_empty(cls, queue, child_can_start, parent_can_continue):
         finally:
             parent_can_continue.set()
 
+    def test_empty_exceptions(self):
+        # Assert that checking emptiness of a closed queue raises
+        # an OSError, independently of whether the queue was used
+        # or not. This differs from Queue and JoinableQueue.
+        q = multiprocessing.SimpleQueue()
+        q.close()  # close the pipe
+        with self.assertRaisesRegex(OSError, 'is closed'):
+            q.empty()
+
     def test_empty(self):
         queue = multiprocessing.SimpleQueue()
         child_can_start = multiprocessing.Event()
@@ -6184,6 +6361,76 @@ def test_atexit(self):
                 self.assertEqual(f.read(), 'deadbeef')
 
 
+class _TestSpawnedSysPath(BaseTestCase):
+    """Test that sys.path is setup in forkserver and spawn processes."""
+
+    ALLOWED_TYPES = {'processes'}
+    # Not applicable to fork which inherits everything from the process as is.
+    START_METHODS = {"forkserver", "spawn"}
+
+    def setUp(self):
+        self._orig_sys_path = list(sys.path)
+        self._temp_dir = tempfile.mkdtemp(prefix="test_sys_path-")
+        self._mod_name = "unique_test_mod"
+        module_path = os.path.join(self._temp_dir, f"{self._mod_name}.py")
+        with open(module_path, "w", encoding="utf-8") as mod:
+            mod.write("# A simple test module\n")
+        sys.path[:] = [p for p in sys.path if p]  # remove any existing ""s
+        sys.path.insert(0, self._temp_dir)
+        sys.path.insert(0, "")  # Replaced with an abspath in child.
+        self.assertIn(self.start_method, self.START_METHODS)
+        self._ctx = multiprocessing.get_context(self.start_method)
+
+    def tearDown(self):
+        sys.path[:] = self._orig_sys_path
+        shutil.rmtree(self._temp_dir, ignore_errors=True)
+
+    @staticmethod
+    def enq_imported_module_names(queue):
+        queue.put(tuple(sys.modules))
+
+    def test_forkserver_preload_imports_sys_path(self):
+        if self._ctx.get_start_method() != "forkserver":
+            self.skipTest("forkserver specific test.")
+        self.assertNotIn(self._mod_name, sys.modules)
+        multiprocessing.forkserver._forkserver._stop()  # Must be fresh.
+        self._ctx.set_forkserver_preload(
+            ["test.test_multiprocessing_forkserver", self._mod_name])
+        q = self._ctx.Queue()
+        proc = self._ctx.Process(
+                target=self.enq_imported_module_names, args=(q,))
+        proc.start()
+        proc.join()
+        child_imported_modules = q.get()
+        q.close()
+        self.assertIn(self._mod_name, child_imported_modules)
+
+    @staticmethod
+    def enq_sys_path_and_import(queue, mod_name):
+        queue.put(sys.path)
+        try:
+            importlib.import_module(mod_name)
+        except ImportError as exc:
+            queue.put(exc)
+        else:
+            queue.put(None)
+
+    def test_child_sys_path(self):
+        q = self._ctx.Queue()
+        proc = self._ctx.Process(
+                target=self.enq_sys_path_and_import, args=(q, self._mod_name))
+        proc.start()
+        proc.join()
+        child_sys_path = q.get()
+        import_error = q.get()
+        q.close()
+        self.assertNotIn("", child_sys_path)  # replaced by an abspath
+        self.assertIn(self._temp_dir, child_sys_path)  # our addition
+        # ignore the first element, it is the absolute "" replacement
+        self.assertEqual(child_sys_path[1:], sys.path[1:])
+        self.assertIsNone(import_error, msg=f"child could not import {self._mod_name}")
+
+
 class MiscTestCase(unittest.TestCase):
     def test__all__(self):
         # Just make sure names in not_exported are excluded
@@ -6378,6 +6625,8 @@ def install_tests_in_module_dict(remote_globs, start_method,
             if base is BaseTestCase:
                 continue
             assert set(base.ALLOWED_TYPES) <= ALL_TYPES, base.ALLOWED_TYPES
+            if base.START_METHODS and start_method not in base.START_METHODS:
+                continue  # class not intended for this start method.
             for type_ in base.ALLOWED_TYPES:
                 if only_type and type_ != only_type:
                     continue
@@ -6391,6 +6640,7 @@ class Temp(base, Mixin, unittest.TestCase):
                     Temp = hashlib_helper.requires_hashdigest('sha256')(Temp)
                 Temp.__name__ = Temp.__qualname__ = newname
                 Temp.__module__ = __module__
+                Temp.start_method = start_method
                 remote_globs[newname] = Temp
         elif issubclass(base, unittest.TestCase):
             if only_type:
diff --git a/Lib/test/audit-tests.py b/Lib/test/audit-tests.py
index de7d0da560a1c7..6df09d891433ea 100644
--- a/Lib/test/audit-tests.py
+++ b/Lib/test/audit-tests.py
@@ -556,6 +556,28 @@ def hook(event, args):
     sys.monitoring.register_callback(1, 1, None)
 
 
+def test_winapi_createnamedpipe(pipe_name):
+    import _winapi
+
+    def hook(event, args):
+        if event == "_winapi.CreateNamedPipe":
+            print(event, args)
+
+    sys.addaudithook(hook)
+    _winapi.CreateNamedPipe(pipe_name, _winapi.PIPE_ACCESS_DUPLEX, 8, 2, 0, 0, 0, 0)
+
+
+def test_assert_unicode():
+    import sys
+    sys.addaudithook(lambda *args: None)
+    try:
+        sys.audit(9)
+    except TypeError:
+        pass
+    else:
+        raise RuntimeError("Expected sys.audit(9) to fail.")
+
+
 if __name__ == "__main__":
     from test.support import suppress_msvcrt_asserts
 
diff --git a/Lib/test/certdata/cert3.pem b/Lib/test/certdata/cert3.pem
new file mode 100644
index 00000000000000..4ab0f5ff133e3f
--- /dev/null
+++ b/Lib/test/certdata/cert3.pem
@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/Lib/test/certdata/make_ssl_certs.py b/Lib/test/certdata/make_ssl_certs.py
index 6626b93976a585..ed2037c1fdff04 100644
--- a/Lib/test/certdata/make_ssl_certs.py
+++ b/Lib/test/certdata/make_ssl_certs.py
@@ -254,6 +254,8 @@ def print_cert(path):
         f.write(key)
         f.write(cert)
 
+    check_call(['openssl', 'x509', '-outform', 'pem', '-in', 'keycert3.pem', '-out', 'cert3.pem'])
+
     cert, key = make_cert_key('fakehostname', sign=True)
     with open('keycert4.pem', 'w') as f:
         f.write(key)
diff --git a/Lib/test/clinic.test.c b/Lib/test/clinic.test.c
index 58ffc0ad4ab88b..bfc15c024de7fd 100644
--- a/Lib/test/clinic.test.c
+++ b/Lib/test/clinic.test.c
@@ -1980,7 +1980,7 @@ test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2014,7 +2014,7 @@ test_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 
 static PyObject *
 test_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=73d46a9ae3320f96 input=0d3484844749c05b]*/
+/*[clinic end generated code: output=13ba007e1c842a37 input=0d3484844749c05b]*/
 
 
 /*[clinic input]
@@ -2050,7 +2050,7 @@ test_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2084,7 +2084,7 @@ test_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 
 static PyObject *
 test_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=c9f02a41f425897d input=384adc78bfa0bff7]*/
+/*[clinic end generated code: output=789799a6d2d6eb4d input=384adc78bfa0bff7]*/
 
 
 /*[clinic input]
@@ -2121,7 +2121,7 @@ test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2168,7 +2168,7 @@ test_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
 static PyObject *
 test_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                        PyObject *c)
-/*[clinic end generated code: output=b35d4e66f7283e46 input=eda7964f784f4607]*/
+/*[clinic end generated code: output=42430dd8ea5afde6 input=eda7964f784f4607]*/
 
 
 /*[clinic input]
@@ -2207,7 +2207,7 @@ test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nar
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2265,7 +2265,7 @@ test_keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_keywords_opt_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c, PyObject *d)
-/*[clinic end generated code: output=ede7e6e65106bf2b input=209387a4815e5082]*/
+/*[clinic end generated code: output=f312c35c380d2bf9 input=209387a4815e5082]*/
 
 
 /*[clinic input]
@@ -2303,7 +2303,7 @@ test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2350,7 +2350,7 @@ test_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_keywords_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c)
-/*[clinic end generated code: output=36d4df939a4c3eef input=18393cc64fa000f4]*/
+/*[clinic end generated code: output=3937da2a8233ebe0 input=18393cc64fa000f4]*/
 
 
 /*[clinic input]
@@ -2386,7 +2386,7 @@ test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2420,7 +2420,7 @@ test_posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
 
 static PyObject *
 test_posonly_keywords_impl(PyObject *module, PyObject *a, PyObject *b)
-/*[clinic end generated code: output=4835f4b6cf386c28 input=1767b0ebdf06060e]*/
+/*[clinic end generated code: output=6b4f6dd5f4db3877 input=1767b0ebdf06060e]*/
 
 
 /*[clinic input]
@@ -2457,7 +2457,7 @@ test_posonly_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2491,7 +2491,7 @@ test_posonly_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 
 static PyObject *
 test_posonly_kwonly_impl(PyObject *module, PyObject *a, PyObject *c)
-/*[clinic end generated code: output=2570ea156a8d3cb5 input=9042f2818f664839]*/
+/*[clinic end generated code: output=8bef2a8198e70b26 input=9042f2818f664839]*/
 
 
 /*[clinic input]
@@ -2530,7 +2530,7 @@ test_posonly_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2567,7 +2567,7 @@ test_posonly_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t
 static PyObject *
 test_posonly_keywords_kwonly_impl(PyObject *module, PyObject *a, PyObject *b,
                                   PyObject *c)
-/*[clinic end generated code: output=aaa0e6b5ce02900d input=29546ebdca492fea]*/
+/*[clinic end generated code: output=a44b8ae8300955e1 input=29546ebdca492fea]*/
 
 
 /*[clinic input]
@@ -2606,7 +2606,7 @@ test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t na
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2655,7 +2655,7 @@ test_posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t na
 static PyObject *
 test_posonly_keywords_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                                PyObject *c, PyObject *d)
-/*[clinic end generated code: output=1d9f2d8420d0a85f input=cdf5a9625e554e9b]*/
+/*[clinic end generated code: output=cae6647c9e8e0238 input=cdf5a9625e554e9b]*/
 
 
 /*[clinic input]
@@ -2693,7 +2693,7 @@ test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t n
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2740,7 +2740,7 @@ test_posonly_keywords_opt2(PyObject *module, PyObject *const *args, Py_ssize_t n
 static PyObject *
 test_posonly_keywords_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
                                 PyObject *c)
-/*[clinic end generated code: output=a83caa0505b296cf input=1581299d21d16f14]*/
+/*[clinic end generated code: output=6526fd08aafa2149 input=1581299d21d16f14]*/
 
 
 /*[clinic input]
@@ -2779,7 +2779,7 @@ test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2833,7 +2833,7 @@ test_posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_
 static PyObject *
 test_posonly_opt_keywords_opt_impl(PyObject *module, PyObject *a,
                                    PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=0b24fba3dc04d26b input=408798ec3d42949f]*/
+/*[clinic end generated code: output=b8d01e98443738c2 input=408798ec3d42949f]*/
 
 
 /*[clinic input]
@@ -2873,7 +2873,7 @@ test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2922,7 +2922,7 @@ test_posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
 static PyObject *
 test_posonly_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                              PyObject *c, PyObject *d)
-/*[clinic end generated code: output=592b217bca2f7bcc input=8d8e5643bbbc2309]*/
+/*[clinic end generated code: output=81d71c288f13d4dc input=8d8e5643bbbc2309]*/
 
 
 /*[clinic input]
@@ -2961,7 +2961,7 @@ test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nar
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3008,7 +3008,7 @@ test_posonly_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_posonly_kwonly_opt2_impl(PyObject *module, PyObject *a, PyObject *b,
                               PyObject *c)
-/*[clinic end generated code: output=b8b00420826bc11f input=f7e5eed94f75fff0]*/
+/*[clinic end generated code: output=a717d2a1a3310289 input=f7e5eed94f75fff0]*/
 
 
 /*[clinic input]
@@ -3048,7 +3048,7 @@ test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3102,7 +3102,7 @@ test_posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
 static PyObject *
 test_posonly_opt_kwonly_opt_impl(PyObject *module, PyObject *a, PyObject *b,
                                  PyObject *c, PyObject *d)
-/*[clinic end generated code: output=3b9ee879ebee285a input=1e557dc979d120fd]*/
+/*[clinic end generated code: output=0f50b4b8d45cf2de input=1e557dc979d120fd]*/
 
 
 /*[clinic input]
@@ -3144,7 +3144,7 @@ test_posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssi
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3196,7 +3196,7 @@ static PyObject *
 test_posonly_keywords_kwonly_opt_impl(PyObject *module, PyObject *a,
                                       PyObject *b, PyObject *c, PyObject *d,
                                       PyObject *e)
-/*[clinic end generated code: output=d380f84f81cc0e45 input=c3884a4f956fdc89]*/
+/*[clinic end generated code: output=8dac8d2a4e6105fa input=c3884a4f956fdc89]*/
 
 
 /*[clinic input]
@@ -3236,7 +3236,7 @@ test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ss
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3285,7 +3285,7 @@ test_posonly_keywords_kwonly_opt2(PyObject *module, PyObject *const *args, Py_ss
 static PyObject *
 test_posonly_keywords_kwonly_opt2_impl(PyObject *module, PyObject *a,
                                        PyObject *b, PyObject *c, PyObject *d)
-/*[clinic end generated code: output=ee629e962cb06992 input=68d01d7c0f6dafb0]*/
+/*[clinic end generated code: output=5a96d521e6414f5d input=68d01d7c0f6dafb0]*/
 
 
 /*[clinic input]
@@ -3328,7 +3328,7 @@ test_posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3389,7 +3389,7 @@ static PyObject *
 test_posonly_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
                                           PyObject *b, PyObject *c,
                                           PyObject *d, PyObject *e)
-/*[clinic end generated code: output=a2721babb42ecfd1 input=d0883d45876f186c]*/
+/*[clinic end generated code: output=d5a474dcd5dc3e9f input=d0883d45876f186c]*/
 
 
 /*[clinic input]
@@ -3432,7 +3432,7 @@ test_posonly_keywords_opt2_kwonly_opt(PyObject *module, PyObject *const *args, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3498,7 +3498,7 @@ static PyObject *
 test_posonly_keywords_opt2_kwonly_opt_impl(PyObject *module, PyObject *a,
                                            PyObject *b, PyObject *c,
                                            PyObject *d, PyObject *e)
-/*[clinic end generated code: output=0626203eedb6e7e8 input=c95e2e1ec93035ad]*/
+/*[clinic end generated code: output=ac239c5ee8a74408 input=c95e2e1ec93035ad]*/
 
 
 /*[clinic input]
@@ -3543,7 +3543,7 @@ test_posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), _Py_LATIN1_CHR('f'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -3617,7 +3617,7 @@ test_posonly_opt_keywords_opt_kwonly_opt_impl(PyObject *module, PyObject *a,
                                               PyObject *b, PyObject *c,
                                               PyObject *d, PyObject *e,
                                               PyObject *f)
-/*[clinic end generated code: output=07d8acc04558a5a0 input=9914857713c5bbf8]*/
+/*[clinic end generated code: output=638bbd0005639342 input=9914857713c5bbf8]*/
 
 /*[clinic input]
 test_keyword_only_parameter
@@ -3935,8 +3935,8 @@ test_vararg_and_posonly
 
 
     a: object
-    *args: object
     /
+    *args: object
 
 [clinic start generated code]*/
 
@@ -3978,7 +3978,7 @@ test_vararg_and_posonly(PyObject *module, PyObject *const *args, Py_ssize_t narg
 
 static PyObject *
 test_vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=79b75dc07decc8d6 input=08dc2bf7afbf1613]*/
+/*[clinic end generated code: output=79b75dc07decc8d6 input=9cfa748bbff09877]*/
 
 /*[clinic input]
 test_vararg
@@ -4013,7 +4013,7 @@ test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -4048,7 +4048,7 @@ test_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
 
 static PyObject *
 test_vararg_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=880365c61ae205d7 input=81d33815ad1bae6e]*/
+/*[clinic end generated code: output=1411e464f358a7ba input=81d33815ad1bae6e]*/
 
 /*[clinic input]
 test_vararg_with_default
@@ -4085,7 +4085,7 @@ test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nar
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -4131,7 +4131,7 @@ test_vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nar
 static PyObject *
 test_vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
                               int b)
-/*[clinic end generated code: output=291e9a5a09831128 input=6e110b54acd9b22d]*/
+/*[clinic end generated code: output=f09d4b917063ca41 input=6e110b54acd9b22d]*/
 
 /*[clinic input]
 test_vararg_with_only_defaults
@@ -4168,7 +4168,7 @@ test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -4219,7 +4219,7 @@ test_vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize
 static PyObject *
 test_vararg_with_only_defaults_impl(PyObject *module, PyObject *args, int b,
                                     PyObject *c)
-/*[clinic end generated code: output=dd21b28f0db26a4b input=fa56a709a035666e]*/
+/*[clinic end generated code: output=cc6590b8805d5433 input=fa56a709a035666e]*/
 
 /*[clinic input]
 test_paramname_module
@@ -4486,7 +4486,7 @@ Test_cls_with_param(TestObj *self, PyTypeObject *cls, PyObject *const *args, Py_
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -4521,7 +4521,7 @@ Test_cls_with_param(TestObj *self, PyTypeObject *cls, PyObject *const *args, Py_
 
 static PyObject *
 Test_cls_with_param_impl(TestObj *self, PyTypeObject *cls, int a)
-/*[clinic end generated code: output=d89b99e83d442be0 input=af158077bd237ef9]*/
+/*[clinic end generated code: output=a3a968137b0f320a input=af158077bd237ef9]*/
 
 
 /*[clinic input]
@@ -4721,7 +4721,7 @@ Test_an_metho_arg_named_arg_impl(TestObj *self, int arg)
 /*[clinic input]
 Test.__init__
     *args: object
-    /
+
 Varargs init method. For example, nargs is translated to PyTuple_GET_SIZE.
 [clinic start generated code]*/
 
@@ -4759,14 +4759,14 @@ Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 
 static int
 Test___init___impl(TestObj *self, PyObject *args)
-/*[clinic end generated code: output=0ed1009fe0dcf98d input=96c3ddc0cd38fc0c]*/
+/*[clinic end generated code: output=0ed1009fe0dcf98d input=2a8bd0033c9ac772]*/
 
 
 /*[clinic input]
 @classmethod
 Test.__new__
     *args: object
-    /
+
 Varargs new method. For example, nargs is translated to PyTuple_GET_SIZE.
 [clinic start generated code]*/
 
@@ -4803,7 +4803,7 @@ Test(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 
 static PyObject *
 Test_impl(PyTypeObject *type, PyObject *args)
-/*[clinic end generated code: output=8b219f6633e2a2e9 input=26a672e2e9750120]*/
+/*[clinic end generated code: output=8b219f6633e2a2e9 input=70ad829df3dd9b84]*/
 
 
 /*[clinic input]
@@ -4834,7 +4834,7 @@ Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -4868,7 +4868,7 @@ Test___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 
 static int
 Test___init___impl(TestObj *self, PyObject *a)
-/*[clinic end generated code: output=0b9ca79638ab3ecb input=a8f9222a6ab35c59]*/
+/*[clinic end generated code: output=0e1239b9bc247bc1 input=a8f9222a6ab35c59]*/
 
 
 /*[clinic input]
@@ -4956,9 +4956,7 @@ Test_meth_coexist_impl(TestObj *self)
 Test.property
 [clinic start generated code]*/
 
-#if defined(Test_property_HAS_DOCSTR)
-#  define Test_property_DOCSTR Test_property__doc__
-#else
+#if !defined(Test_property_DOCSTR)
 #  define Test_property_DOCSTR NULL
 #endif
 #if defined(TEST_PROPERTY_GETSETDEF)
@@ -4979,16 +4977,14 @@ Test_property_get(TestObj *self, void *Py_UNUSED(context))
 
 static PyObject *
 Test_property_get_impl(TestObj *self)
-/*[clinic end generated code: output=27b519719d992e03 input=2d92b3449fbc7d2b]*/
+/*[clinic end generated code: output=7cadd0f539805266 input=2d92b3449fbc7d2b]*/
 
 /*[clinic input]
 @setter
 Test.property
 [clinic start generated code]*/
 
-#if defined(TEST_PROPERTY_HAS_DOCSTR)
-#  define Test_property_DOCSTR Test_property__doc__
-#else
+#if !defined(Test_property_DOCSTR)
 #  define Test_property_DOCSTR NULL
 #endif
 #if defined(TEST_PROPERTY_GETSETDEF)
@@ -5013,7 +5009,76 @@ Test_property_set(TestObj *self, PyObject *value, void *Py_UNUSED(context))
 
 static int
 Test_property_set_impl(TestObj *self, PyObject *value)
-/*[clinic end generated code: output=d51023f17c4ac3a1 input=3bc3f46a23c83a88]*/
+/*[clinic end generated code: output=e4342fe9bb1d7817 input=3bc3f46a23c83a88]*/
+
+/*[clinic input]
+@setter
+Test.setter_first_with_docstr
+[clinic start generated code]*/
+
+#if !defined(Test_setter_first_with_docstr_DOCSTR)
+#  define Test_setter_first_with_docstr_DOCSTR NULL
+#endif
+#if defined(TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF)
+#  undef TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF
+#  define TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF {"setter_first_with_docstr", (getter)Test_setter_first_with_docstr_get, (setter)Test_setter_first_with_docstr_set, Test_setter_first_with_docstr_DOCSTR},
+#else
+#  define TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF {"setter_first_with_docstr", NULL, (setter)Test_setter_first_with_docstr_set, NULL},
+#endif
+
+static int
+Test_setter_first_with_docstr_set_impl(TestObj *self, PyObject *value);
+
+static int
+Test_setter_first_with_docstr_set(TestObj *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    return_value = Test_setter_first_with_docstr_set_impl(self, value);
+
+    return return_value;
+}
+
+static int
+Test_setter_first_with_docstr_set_impl(TestObj *self, PyObject *value)
+/*[clinic end generated code: output=e4d76b558a4061db input=31a045ce11bbe961]*/
+
+/*[clinic input]
+@getter
+Test.setter_first_with_docstr
+
+my silly docstring
+[clinic start generated code]*/
+
+PyDoc_STRVAR(Test_setter_first_with_docstr__doc__,
+"my silly docstring");
+#if defined(Test_setter_first_with_docstr_DOCSTR)
+#   undef Test_setter_first_with_docstr_DOCSTR
+#endif
+#define Test_setter_first_with_docstr_DOCSTR Test_setter_first_with_docstr__doc__
+
+#if !defined(Test_setter_first_with_docstr_DOCSTR)
+#  define Test_setter_first_with_docstr_DOCSTR NULL
+#endif
+#if defined(TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF)
+#  undef TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF
+#  define TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF {"setter_first_with_docstr", (getter)Test_setter_first_with_docstr_get, (setter)Test_setter_first_with_docstr_set, Test_setter_first_with_docstr_DOCSTR},
+#else
+#  define TEST_SETTER_FIRST_WITH_DOCSTR_GETSETDEF {"setter_first_with_docstr", (getter)Test_setter_first_with_docstr_get, NULL, Test_setter_first_with_docstr_DOCSTR},
+#endif
+
+static PyObject *
+Test_setter_first_with_docstr_get_impl(TestObj *self);
+
+static PyObject *
+Test_setter_first_with_docstr_get(TestObj *self, void *Py_UNUSED(context))
+{
+    return Test_setter_first_with_docstr_get_impl(self);
+}
+
+static PyObject *
+Test_setter_first_with_docstr_get_impl(TestObj *self)
+/*[clinic end generated code: output=749a30266f9fb443 input=10af4e43b3cb34dc]*/
 
 /*[clinic input]
 output push
@@ -5102,7 +5167,7 @@ mangled_c_keyword_identifier(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(i), },
+        .ob_item = { _Py_LATIN1_CHR('i'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -5137,7 +5202,7 @@ mangled_c_keyword_identifier(PyObject *module, PyObject *const *args, Py_ssize_t
 
 static PyObject *
 mangled_c_keyword_identifier_impl(PyObject *module, int int_value)
-/*[clinic end generated code: output=f24b37e0368e0eb8 input=060876448ab567a2]*/
+/*[clinic end generated code: output=01a8088b57632916 input=060876448ab567a2]*/
 
 
 /*[clinic input]
@@ -5449,7 +5514,7 @@ docstr_fallback_to_converter_default(PyObject *module, PyObject *const *args, Py
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -5483,7 +5548,7 @@ docstr_fallback_to_converter_default(PyObject *module, PyObject *const *args, Py
 
 static PyObject *
 docstr_fallback_to_converter_default_impl(PyObject *module, str a)
-/*[clinic end generated code: output=ae24a9c6f60ee8a6 input=0cbe6a4d24bc2274]*/
+/*[clinic end generated code: output=3fff7b702f0065cb input=0cbe6a4d24bc2274]*/
 
 
 /*[clinic input]
diff --git a/Lib/test/crashers/README b/Lib/test/crashers/README
index d844385113eb45..7111946b93b280 100644
--- a/Lib/test/crashers/README
+++ b/Lib/test/crashers/README
@@ -15,7 +15,3 @@ what the variables are.
 Once the crash is fixed, the test case should be moved into an appropriate test
 (even if it was originally from the test suite).  This ensures the regression
 doesn't happen again.  And if it does, it should be easier to track down.
-
-Also see Lib/test_crashers.py which exercises the crashers in this directory.
-In particular, make sure to add any new infinite loop crashers to the black
-list so it doesn't try to run them.
diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py
index 570110893629cf..a2ed99a80b76a5 100644
--- a/Lib/test/datetimetester.py
+++ b/Lib/test/datetimetester.py
@@ -13,6 +13,7 @@
 import re
 import struct
 import sys
+import textwrap
 import unittest
 import warnings
 
@@ -22,6 +23,7 @@
 
 from test import support
 from test.support import is_resource_enabled, ALWAYS_EQ, LARGEST, SMALLEST
+from test.support import script_helper, warnings_helper
 
 import datetime as datetime_module
 from datetime import MINYEAR, MAXYEAR
@@ -37,6 +39,10 @@
     import _testcapi
 except ImportError:
     _testcapi = None
+try:
+    import _interpreters
+except ModuleNotFoundError:
+    _interpreters = None
 
 # Needed by test_datetime
 import _strptime
@@ -1335,6 +1341,11 @@ def test_insane_fromtimestamp(self):
             self.assertRaises(OverflowError, self.theclass.fromtimestamp,
                               insane)
 
+    def test_fromtimestamp_with_none_arg(self):
+        # See gh-120268 for more details
+        with self.assertRaises(TypeError):
+            self.theclass.fromtimestamp(None)
+
     def test_today(self):
         import time
 
@@ -2797,6 +2808,7 @@ def test_strptime_single_digit(self):
                 newdate = strptime(string, format)
                 self.assertEqual(newdate, target, msg=reason)
 
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)
     def test_strptime_leap_year(self):
         # GH-70647: warns if parsing a format with a day and no year.
         with self.assertRaises(ValueError):
@@ -2843,11 +2855,32 @@ def test_more_strftime(self):
             self.assertEqual(t.strftime("%z"), "-0200" + z)
             self.assertEqual(t.strftime("%:z"), "-02:00:" + z)
 
-        # bpo-34482: Check that surrogates don't cause a crash.
-        try:
-            t.strftime('%y\ud800%m %H\ud800%M')
-        except UnicodeEncodeError:
-            pass
+    def test_strftime_special(self):
+        t = self.theclass(2004, 12, 31, 6, 22, 33, 47)
+        s1 = t.strftime('%c')
+        s2 = t.strftime('%B')
+        # gh-52551, gh-78662: Unicode strings should pass through strftime,
+        # independently from locale.
+        self.assertEqual(t.strftime('\U0001f40d'), '\U0001f40d')
+        self.assertEqual(t.strftime('\U0001f4bb%c\U0001f40d%B'), f'\U0001f4bb{s1}\U0001f40d{s2}')
+        self.assertEqual(t.strftime('%c\U0001f4bb%B\U0001f40d'), f'{s1}\U0001f4bb{s2}\U0001f40d')
+        # Lone surrogates should pass through.
+        self.assertEqual(t.strftime('\ud83d'), '\ud83d')
+        self.assertEqual(t.strftime('\udc0d'), '\udc0d')
+        self.assertEqual(t.strftime('\ud83d%c\udc0d%B'), f'\ud83d{s1}\udc0d{s2}')
+        self.assertEqual(t.strftime('%c\ud83d%B\udc0d'), f'{s1}\ud83d{s2}\udc0d')
+        self.assertEqual(t.strftime('%c\udc0d%B\ud83d'), f'{s1}\udc0d{s2}\ud83d')
+        # Surrogate pairs should not recombine.
+        self.assertEqual(t.strftime('\ud83d\udc0d'), '\ud83d\udc0d')
+        self.assertEqual(t.strftime('%c\ud83d\udc0d%B'), f'{s1}\ud83d\udc0d{s2}')
+        # Surrogate-escaped bytes should not recombine.
+        self.assertEqual(t.strftime('\udcf0\udc9f\udc90\udc8d'), '\udcf0\udc9f\udc90\udc8d')
+        self.assertEqual(t.strftime('%c\udcf0\udc9f\udc90\udc8d%B'), f'{s1}\udcf0\udc9f\udc90\udc8d{s2}')
+        # gh-124531: The null character should not terminate the format string.
+        self.assertEqual(t.strftime('\0'), '\0')
+        self.assertEqual(t.strftime('\0'*1000), '\0'*1000)
+        self.assertEqual(t.strftime('\0%c\0%B'), f'\0{s1}\0{s2}')
+        self.assertEqual(t.strftime('%c\0%B\0'), f'{s1}\0{s2}\0')
 
     def test_extract(self):
         dt = self.theclass(2002, 3, 4, 18, 45, 3, 1234)
@@ -3621,6 +3654,33 @@ def test_strftime(self):
         # gh-85432: The parameter was named "fmt" in the pure-Python impl.
         t.strftime(format="%f")
 
+    def test_strftime_special(self):
+        t = self.theclass(1, 2, 3, 4)
+        s1 = t.strftime('%I%p%Z')
+        s2 = t.strftime('%X')
+        # gh-52551, gh-78662: Unicode strings should pass through strftime,
+        # independently from locale.
+        self.assertEqual(t.strftime('\U0001f40d'), '\U0001f40d')
+        self.assertEqual(t.strftime('\U0001f4bb%I%p%Z\U0001f40d%X'), f'\U0001f4bb{s1}\U0001f40d{s2}')
+        self.assertEqual(t.strftime('%I%p%Z\U0001f4bb%X\U0001f40d'), f'{s1}\U0001f4bb{s2}\U0001f40d')
+        # Lone surrogates should pass through.
+        self.assertEqual(t.strftime('\ud83d'), '\ud83d')
+        self.assertEqual(t.strftime('\udc0d'), '\udc0d')
+        self.assertEqual(t.strftime('\ud83d%I%p%Z\udc0d%X'), f'\ud83d{s1}\udc0d{s2}')
+        self.assertEqual(t.strftime('%I%p%Z\ud83d%X\udc0d'), f'{s1}\ud83d{s2}\udc0d')
+        self.assertEqual(t.strftime('%I%p%Z\udc0d%X\ud83d'), f'{s1}\udc0d{s2}\ud83d')
+        # Surrogate pairs should not recombine.
+        self.assertEqual(t.strftime('\ud83d\udc0d'), '\ud83d\udc0d')
+        self.assertEqual(t.strftime('%I%p%Z\ud83d\udc0d%X'), f'{s1}\ud83d\udc0d{s2}')
+        # Surrogate-escaped bytes should not recombine.
+        self.assertEqual(t.strftime('\udcf0\udc9f\udc90\udc8d'), '\udcf0\udc9f\udc90\udc8d')
+        self.assertEqual(t.strftime('%I%p%Z\udcf0\udc9f\udc90\udc8d%X'), f'{s1}\udcf0\udc9f\udc90\udc8d{s2}')
+        # gh-124531: The null character should not terminate the format string.
+        self.assertEqual(t.strftime('\0'), '\0')
+        self.assertEqual(t.strftime('\0'*1000), '\0'*1000)
+        self.assertEqual(t.strftime('\0%I%p%Z\0%X'), f'\0{s1}\0{s2}')
+        self.assertEqual(t.strftime('%I%p%Z\0%X\0'), f'{s1}\0{s2}\0')
+
     def test_format(self):
         t = self.theclass(1, 2, 3, 4)
         self.assertEqual(t.__format__(''), str(t))
@@ -4072,9 +4132,8 @@ def tzname(self, dt): return self.tz
         self.assertRaises(TypeError, t.strftime, "%Z")
 
         # Issue #6697:
-        if '_Fast' in self.__class__.__name__:
-            Badtzname.tz = '\ud800'
-            self.assertRaises(ValueError, t.strftime, "%Z")
+        Badtzname.tz = '\ud800'
+        self.assertEqual(t.strftime("%Z"), '\ud800')
 
     def test_hash_edge_cases(self):
         # Offsets that overflow a basic time.
@@ -6771,6 +6830,123 @@ def test_datetime_from_timestamp(self):
 
                     self.assertEqual(dt_orig, dt_rt)
 
+    def test_type_check_in_subinterp(self):
+        # iOS requires the use of the custom framework loader,
+        # not the ExtensionFileLoader.
+        if sys.platform == "ios":
+            extension_loader = "AppleFrameworkLoader"
+        else:
+            extension_loader = "ExtensionFileLoader"
+
+        script = textwrap.dedent(f"""
+            if {_interpreters is None}:
+                import _testcapi as module
+                module.test_datetime_capi()
+            else:
+                import importlib.machinery
+                import importlib.util
+                fullname = '_testcapi_datetime'
+                origin = importlib.util.find_spec('_testcapi').origin
+                loader = importlib.machinery.{extension_loader}(fullname, origin)
+                spec = importlib.util.spec_from_loader(fullname, loader)
+                module = importlib.util.module_from_spec(spec)
+                spec.loader.exec_module(module)
+
+            def run(type_checker, obj):
+                if not type_checker(obj, True):
+                    raise TypeError(f'{{type(obj)}} is not C API type')
+
+            import _datetime
+            run(module.datetime_check_date,     _datetime.date.today())
+            run(module.datetime_check_datetime, _datetime.datetime.now())
+            run(module.datetime_check_time,     _datetime.time(12, 30))
+            run(module.datetime_check_delta,    _datetime.timedelta(1))
+            run(module.datetime_check_tzinfo,   _datetime.tzinfo())
+        """)
+        if _interpreters is None:
+            ret = support.run_in_subinterp(script)
+            self.assertEqual(ret, 0)
+        else:
+            for name in ('isolated', 'legacy'):
+                with self.subTest(name):
+                    config = _interpreters.new_config(name).__dict__
+                    ret = support.run_in_subinterp_with_config(script, **config)
+                    self.assertEqual(ret, 0)
+
+
+class ExtensionModuleTests(unittest.TestCase):
+
+    def setUp(self):
+        if self.__class__.__name__.endswith('Pure'):
+            self.skipTest('Not relevant in pure Python')
+
+    @support.cpython_only
+    def test_gh_120161(self):
+        with self.subTest('simple'):
+            script = textwrap.dedent("""
+                import datetime
+                from _ast import Tuple
+                f = lambda: None
+                Tuple.dims = property(f, f)
+
+                class tzutc(datetime.tzinfo):
+                    pass
+                """)
+            script_helper.assert_python_ok('-c', script)
+
+        with self.subTest('complex'):
+            script = textwrap.dedent("""
+                import asyncio
+                import datetime
+                from typing import Type
+
+                class tzutc(datetime.tzinfo):
+                    pass
+                _EPOCHTZ = datetime.datetime(1970, 1, 1, tzinfo=tzutc())
+
+                class FakeDateMeta(type):
+                    def __instancecheck__(self, obj):
+                        return True
+                class FakeDate(datetime.date, metaclass=FakeDateMeta):
+                    pass
+                def pickle_fake_date(datetime_) -> Type[FakeDate]:
+                    # A pickle function for FakeDate
+                    return FakeDate
+                """)
+            script_helper.assert_python_ok('-c', script)
+
+    def test_update_type_cache(self):
+        # gh-120782
+        script = textwrap.dedent("""
+            import sys
+            for i in range(5):
+                import _datetime
+                assert _datetime.date.max > _datetime.date.min
+                assert _datetime.time.max > _datetime.time.min
+                assert _datetime.datetime.max > _datetime.datetime.min
+                assert _datetime.timedelta.max > _datetime.timedelta.min
+                assert _datetime.date.__dict__["min"] is _datetime.date.min
+                assert _datetime.date.__dict__["max"] is _datetime.date.max
+                assert _datetime.date.__dict__["resolution"] is _datetime.date.resolution
+                assert _datetime.time.__dict__["min"] is _datetime.time.min
+                assert _datetime.time.__dict__["max"] is _datetime.time.max
+                assert _datetime.time.__dict__["resolution"] is _datetime.time.resolution
+                assert _datetime.datetime.__dict__["min"] is _datetime.datetime.min
+                assert _datetime.datetime.__dict__["max"] is _datetime.datetime.max
+                assert _datetime.datetime.__dict__["resolution"] is _datetime.datetime.resolution
+                assert _datetime.timedelta.__dict__["min"] is _datetime.timedelta.min
+                assert _datetime.timedelta.__dict__["max"] is _datetime.timedelta.max
+                assert _datetime.timedelta.__dict__["resolution"] is _datetime.timedelta.resolution
+                assert _datetime.timezone.__dict__["min"] is _datetime.timezone.min
+                assert _datetime.timezone.__dict__["max"] is _datetime.timezone.max
+                assert _datetime.timezone.__dict__["utc"] is _datetime.timezone.utc
+                assert isinstance(_datetime.timezone.min, _datetime.tzinfo)
+                assert isinstance(_datetime.timezone.max, _datetime.tzinfo)
+                assert isinstance(_datetime.timezone.utc, _datetime.tzinfo)
+                del sys.modules['_datetime']
+            """)
+        script_helper.assert_python_ok('-c', script)
+
 
 def load_tests(loader, standard_tests, pattern):
     standard_tests.addTest(ZoneInfoCompleteTest())
diff --git a/Lib/test/decimaltestdata/ddFMA.decTest b/Lib/test/decimaltestdata/ddFMA.decTest
index 9094fc015bde18..7f2e52303747f8 100644
--- a/Lib/test/decimaltestdata/ddFMA.decTest
+++ b/Lib/test/decimaltestdata/ddFMA.decTest
@@ -1663,7 +1663,7 @@ ddfma375087 fma  1  12345678 1E-33                   -> 12345678.00000001 Inexac
 ddfma375088 fma  1  12345678 1E-34                   -> 12345678.00000001 Inexact Rounded
 ddfma375089 fma  1  12345678 1E-35                   -> 12345678.00000001 Inexact Rounded
 
--- desctructive subtraction (from remainder tests)
+-- destructive subtraction (from remainder tests)
 
 -- +++ some of these will be off-by-one remainder vs remainderNear
 
diff --git a/Lib/test/decimaltestdata/ddQuantize.decTest b/Lib/test/decimaltestdata/ddQuantize.decTest
index 91776201694dd6..e1c5674d9ac042 100644
--- a/Lib/test/decimaltestdata/ddQuantize.decTest
+++ b/Lib/test/decimaltestdata/ddQuantize.decTest
@@ -462,7 +462,7 @@ ddqua520 quantize   1.234    1e359 -> 0E+359 Inexact Rounded
 ddqua521 quantize 123.456    1e359 -> 0E+359 Inexact Rounded
 ddqua522 quantize   1.234    1e359 -> 0E+359 Inexact Rounded
 ddqua523 quantize 123.456    1e359 -> 0E+359 Inexact Rounded
--- next four are "won't fit" overfl
+-- next four are "won't fit" overflow
 ddqua526 quantize   1.234   1e-299 -> NaN Invalid_operation
 ddqua527 quantize 123.456   1e-299 -> NaN Invalid_operation
 ddqua528 quantize   1.234   1e-299 -> NaN Invalid_operation
diff --git a/Lib/test/decimaltestdata/ddRemainder.decTest b/Lib/test/decimaltestdata/ddRemainder.decTest
index 5bd1e32d01ef03..b1866d39a2868c 100644
--- a/Lib/test/decimaltestdata/ddRemainder.decTest
+++ b/Lib/test/decimaltestdata/ddRemainder.decTest
@@ -422,7 +422,7 @@ ddrem757 remainder  1    sNaN   ->  NaN  Invalid_operation
 ddrem758 remainder  1000 sNaN   ->  NaN  Invalid_operation
 ddrem759 remainder  Inf -sNaN   -> -NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 ddrem760 remainder  NaN1   NaN7   ->  NaN1
 ddrem761 remainder sNaN2   NaN8   ->  NaN2 Invalid_operation
 ddrem762 remainder  NaN3  sNaN9   ->  NaN9 Invalid_operation
diff --git a/Lib/test/decimaltestdata/ddRemainderNear.decTest b/Lib/test/decimaltestdata/ddRemainderNear.decTest
index 6ba64ebafe9a18..bbe82ea3747d16 100644
--- a/Lib/test/decimaltestdata/ddRemainderNear.decTest
+++ b/Lib/test/decimaltestdata/ddRemainderNear.decTest
@@ -450,7 +450,7 @@ ddrmn757 remaindernear  1    sNaN   ->  NaN  Invalid_operation
 ddrmn758 remaindernear  1000 sNaN   ->  NaN  Invalid_operation
 ddrmn759 remaindernear  Inf -sNaN   -> -NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 ddrmn760 remaindernear  NaN1   NaN7   ->  NaN1
 ddrmn761 remaindernear sNaN2   NaN8   ->  NaN2 Invalid_operation
 ddrmn762 remaindernear  NaN3  sNaN9   ->  NaN9 Invalid_operation
diff --git a/Lib/test/decimaltestdata/dqRemainder.decTest b/Lib/test/decimaltestdata/dqRemainder.decTest
index bae8eae5269d43..e0aaca3747e229 100644
--- a/Lib/test/decimaltestdata/dqRemainder.decTest
+++ b/Lib/test/decimaltestdata/dqRemainder.decTest
@@ -418,7 +418,7 @@ dqrem757 remainder  1    sNaN   ->  NaN  Invalid_operation
 dqrem758 remainder  1000 sNaN   ->  NaN  Invalid_operation
 dqrem759 remainder  Inf -sNaN   -> -NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 dqrem760 remainder  NaN1   NaN7   ->  NaN1
 dqrem761 remainder sNaN2   NaN8   ->  NaN2 Invalid_operation
 dqrem762 remainder  NaN3  sNaN9   ->  NaN9 Invalid_operation
diff --git a/Lib/test/decimaltestdata/dqRemainderNear.decTest b/Lib/test/decimaltestdata/dqRemainderNear.decTest
index b850626fe4e04d..2c5c3f5074ea23 100644
--- a/Lib/test/decimaltestdata/dqRemainderNear.decTest
+++ b/Lib/test/decimaltestdata/dqRemainderNear.decTest
@@ -450,7 +450,7 @@ dqrmn757 remaindernear  1    sNaN   ->  NaN  Invalid_operation
 dqrmn758 remaindernear  1000 sNaN   ->  NaN  Invalid_operation
 dqrmn759 remaindernear  Inf -sNaN   -> -NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 dqrmn760 remaindernear  NaN1   NaN7   ->  NaN1
 dqrmn761 remaindernear sNaN2   NaN8   ->  NaN2 Invalid_operation
 dqrmn762 remaindernear  NaN3  sNaN9   ->  NaN9 Invalid_operation
diff --git a/Lib/test/decimaltestdata/exp.decTest b/Lib/test/decimaltestdata/exp.decTest
index 6a7af23b625530..e01d7a8f92db1f 100644
--- a/Lib/test/decimaltestdata/exp.decTest
+++ b/Lib/test/decimaltestdata/exp.decTest
@@ -28,7 +28,7 @@ rounding:    half_even
 maxExponent: 384
 minexponent: -383
 
--- basics (examples in specificiation, etc.)
+-- basics (examples in specification, etc.)
 expx001 exp  -Infinity     -> 0
 expx002 exp  -10           -> 0.0000453999298 Inexact Rounded
 expx003 exp  -1            -> 0.367879441 Inexact Rounded
diff --git a/Lib/test/decimaltestdata/remainder.decTest b/Lib/test/decimaltestdata/remainder.decTest
index 7a1061b1e6f0f8..4f59b332877afe 100644
--- a/Lib/test/decimaltestdata/remainder.decTest
+++ b/Lib/test/decimaltestdata/remainder.decTest
@@ -435,7 +435,7 @@ remx757 remainder  1    sNaN   ->  NaN  Invalid_operation
 remx758 remainder  1000 sNaN   ->  NaN  Invalid_operation
 remx759 remainder  Inf -sNaN   -> -NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 remx760 remainder  NaN1   NaN7   ->  NaN1
 remx761 remainder sNaN2   NaN8   ->  NaN2 Invalid_operation
 remx762 remainder  NaN3  sNaN9   ->  NaN9 Invalid_operation
diff --git a/Lib/test/decimaltestdata/remainderNear.decTest b/Lib/test/decimaltestdata/remainderNear.decTest
index b768b9e0cf6370..000b1424d8ab48 100644
--- a/Lib/test/decimaltestdata/remainderNear.decTest
+++ b/Lib/test/decimaltestdata/remainderNear.decTest
@@ -498,7 +498,7 @@ rmnx758 remaindernear  1000 sNaN   ->  NaN  Invalid_operation
 rmnx759 remaindernear  Inf  sNaN   ->  NaN  Invalid_operation
 rmnx760 remaindernear  NaN  sNaN   ->  NaN  Invalid_operation
 
--- propaging NaNs
+-- propagating NaNs
 rmnx761 remaindernear  NaN1   NaN7   ->  NaN1
 rmnx762 remaindernear sNaN2   NaN8   ->  NaN2 Invalid_operation
 rmnx763 remaindernear  NaN3 -sNaN9   -> -NaN9 Invalid_operation
diff --git a/Lib/test/exception_hierarchy.txt b/Lib/test/exception_hierarchy.txt
index 65f54859e2a21d..f2649aa2d41fef 100644
--- a/Lib/test/exception_hierarchy.txt
+++ b/Lib/test/exception_hierarchy.txt
@@ -45,7 +45,6 @@ BaseException
       ├── StopAsyncIteration
       ├── StopIteration
       ├── SyntaxError
-      │    └── IncompleteInputError
       │    └── IndentationError
       │         └── TabError
       ├── SystemError
diff --git a/Lib/test/libregrtest/cmdline.py b/Lib/test/libregrtest/cmdline.py
index 3e7428c4ad3797..0c94fcc1907071 100644
--- a/Lib/test/libregrtest/cmdline.py
+++ b/Lib/test/libregrtest/cmdline.py
@@ -148,7 +148,7 @@ def __init__(self, **kwargs) -> None:
         self.randomize = False
         self.fromfile = None
         self.fail_env_changed = False
-        self.use_resources = None
+        self.use_resources: list[str] = []
         self.trace = False
         self.coverdir = 'coverage'
         self.runleaks = False
@@ -174,6 +174,7 @@ def __init__(self, **kwargs) -> None:
         self.tempdir = None
         self._add_python_opts = True
         self.xmlpath = None
+        self.single_process = False
 
         super().__init__(**kwargs)
 
@@ -307,6 +308,12 @@ def _create_parser():
     group.add_argument('-j', '--multiprocess', metavar='PROCESSES',
                        dest='use_mp', type=int,
                        help='run PROCESSES processes at once')
+    group.add_argument('--single-process', action='store_true',
+                       dest='single_process',
+                       help='always run all tests sequentially in '
+                            'a single process, ignore -jN option, '
+                            'and failed tests are also rerun sequentially '
+                            'in the same process')
     group.add_argument('-T', '--coverage', action='store_true',
                        dest='trace',
                        help='turn on code coverage tracing using the trace '
@@ -396,8 +403,6 @@ def _parse_args(args, **kwargs):
             raise TypeError('%r is an invalid keyword argument '
                             'for this function' % k)
         setattr(ns, k, v)
-    if ns.use_resources is None:
-        ns.use_resources = []
 
     parser = _create_parser()
     # Issue #14191: argparse doesn't support "intermixed" positional and
@@ -421,9 +426,7 @@ def _parse_args(args, **kwargs):
     # Continuous Integration (CI): common options for fast/slow CI modes
     if ns.slow_ci or ns.fast_ci:
         # Similar to options:
-        #
-        #     -j0 --randomize --fail-env-changed --fail-rerun --rerun
-        #     --slowest --verbose3
+        #   -j0 --randomize --fail-env-changed --rerun --slowest --verbose3
         if ns.use_mp is None:
             ns.use_mp = 0
         ns.randomize = True
@@ -435,6 +438,10 @@ def _parse_args(args, **kwargs):
     else:
         ns._add_python_opts = False
 
+    # --singleprocess overrides -jN option
+    if ns.single_process:
+        ns.use_mp = None
+
     # When both --slow-ci and --fast-ci options are present,
     # --slow-ci has the priority
     if ns.slow_ci:
@@ -520,15 +527,6 @@ def _parse_args(args, **kwargs):
               "--huntrleaks without -jN option",
               file=sys.stderr)
 
-    if ns.huntrleaks and ns.xmlpath:
-        # The XML data is written into a file outside runtest_refleak(), so
-        # it looks like a leak but it's not. Simply disable XML output when
-        # hunting for reference leaks (gh-83434).
-        ns.xmlpath = None
-        print("WARNING: Disable --junit-xml because it's incompatible "
-              "with --huntrleaks",
-              file=sys.stderr)
-
     if ns.forever:
         # --forever implies --failfast
         ns.failfast = True
diff --git a/Lib/test/libregrtest/findtests.py b/Lib/test/libregrtest/findtests.py
index 4ac95e23a56b8f..f01c1240774707 100644
--- a/Lib/test/libregrtest/findtests.py
+++ b/Lib/test/libregrtest/findtests.py
@@ -1,6 +1,7 @@
 import os
 import sys
 import unittest
+from collections.abc import Container
 
 from test import support
 
@@ -34,7 +35,7 @@ def findtestdir(path: StrPath | None = None) -> StrPath:
     return path or os.path.dirname(os.path.dirname(__file__)) or os.curdir
 
 
-def findtests(*, testdir: StrPath | None = None, exclude=(),
+def findtests(*, testdir: StrPath | None = None, exclude: Container[str] = (),
               split_test_dirs: set[TestName] = SPLITTESTDIRS,
               base_mod: str = "") -> TestList:
     """Return a list of all applicable test modules."""
@@ -60,8 +61,9 @@ def findtests(*, testdir: StrPath | None = None, exclude=(),
     return sorted(tests)
 
 
-def split_test_packages(tests, *, testdir: StrPath | None = None, exclude=(),
-                        split_test_dirs=SPLITTESTDIRS):
+def split_test_packages(tests, *, testdir: StrPath | None = None,
+                        exclude: Container[str] = (),
+                        split_test_dirs=SPLITTESTDIRS) -> list[TestName]:
     testdir = findtestdir(testdir)
     splitted = []
     for name in tests:
@@ -75,9 +77,9 @@ def split_test_packages(tests, *, testdir: StrPath | None = None, exclude=(),
     return splitted
 
 
-def _list_cases(suite):
+def _list_cases(suite: unittest.TestSuite) -> None:
     for test in suite:
-        if isinstance(test, unittest.loader._FailedTest):
+        if isinstance(test, unittest.loader._FailedTest):  # type: ignore[attr-defined]
             continue
         if isinstance(test, unittest.TestSuite):
             _list_cases(test)
@@ -87,7 +89,7 @@ def _list_cases(suite):
 
 def list_cases(tests: TestTuple, *,
                match_tests: TestFilter | None = None,
-               test_dir: StrPath | None = None):
+               test_dir: StrPath | None = None) -> None:
     support.verbose = False
     set_match_tests(match_tests)
 
diff --git a/Lib/test/libregrtest/logger.py b/Lib/test/libregrtest/logger.py
index a125706927393c..fa1d4d575c8fd4 100644
--- a/Lib/test/libregrtest/logger.py
+++ b/Lib/test/libregrtest/logger.py
@@ -43,7 +43,10 @@ def log(self, line: str = '') -> None:
 
     def get_load_avg(self) -> float | None:
         if hasattr(os, 'getloadavg'):
-            return os.getloadavg()[0]
+            try:
+                return os.getloadavg()[0]
+            except OSError:
+                pass
         if self.win_load_tracker is not None:
             return self.win_load_tracker.getloadavg()
         return None
diff --git a/Lib/test/libregrtest/main.py b/Lib/test/libregrtest/main.py
index 9e7a7d60880091..da63079399a372 100644
--- a/Lib/test/libregrtest/main.py
+++ b/Lib/test/libregrtest/main.py
@@ -6,6 +6,7 @@
 import sysconfig
 import time
 import trace
+from typing import NoReturn
 
 from test.support import (os_helper, MS_WINDOWS, flush_std_streams,
                           suppress_immortalization)
@@ -89,12 +90,13 @@ def __init__(self, ns: Namespace, _add_python_opts: bool = False):
         self.cmdline_args: TestList = ns.args
 
         # Workers
-        if ns.use_mp is None:
-            num_workers = 0  # run sequentially
+        self.single_process: bool = ns.single_process
+        if self.single_process or ns.use_mp is None:
+            num_workers = 0   # run sequentially in a single process
         elif ns.use_mp <= 0:
-            num_workers = -1  # use the number of CPUs
+            num_workers = -1  # run in parallel, use the number of CPUs
         else:
-            num_workers = ns.use_mp
+            num_workers = ns.use_mp  # run in parallel
         self.num_workers: int = num_workers
         self.worker_json: StrJSON | None = ns.worker_json
 
@@ -122,7 +124,7 @@ def __init__(self, ns: Namespace, _add_python_opts: bool = False):
             self.python_cmd = None
         self.coverage: bool = ns.trace
         self.coverage_dir: StrPath | None = ns.coverdir
-        self.tmp_dir: StrPath | None = ns.tempdir
+        self._tmp_dir: StrPath | None = ns.tempdir
 
         # Randomize
         self.randomize: bool = ns.randomize
@@ -154,10 +156,12 @@ def __init__(self, ns: Namespace, _add_python_opts: bool = False):
         self.next_single_test: TestName | None = None
         self.next_single_filename: StrPath | None = None
 
-    def log(self, line=''):
+    def log(self, line: str = '') -> None:
         self.logger.log(line)
 
     def find_tests(self, tests: TestList | None = None) -> tuple[TestTuple, TestList | None]:
+        if tests is None:
+            tests = []
         if self.single_test_run:
             self.next_single_filename = os.path.join(self.tmp_dir, 'pynexttest')
             try:
@@ -230,13 +234,13 @@ def find_tests(self, tests: TestList | None = None) -> tuple[TestTuple, TestList
         return (tuple(selected), tests)
 
     @staticmethod
-    def list_tests(tests: TestTuple):
+    def list_tests(tests: TestTuple) -> None:
         for name in tests:
             print(name)
 
-    def _rerun_failed_tests(self, runtests: RunTests):
+    def _rerun_failed_tests(self, runtests: RunTests) -> RunTests:
         # Configure the runner to re-run tests
-        if self.num_workers == 0:
+        if self.num_workers == 0 and not self.single_process:
             # Always run tests in fresh processes to have more deterministic
             # initial state. Don't re-run tests in parallel but limit to a
             # single worker process to have side effects (on the system load
@@ -246,7 +250,6 @@ def _rerun_failed_tests(self, runtests: RunTests):
         tests, match_tests_dict = self.results.prepare_rerun()
 
         # Re-run failed tests
-        self.log(f"Re-running {len(tests)} failed tests in verbose mode in subprocesses")
         runtests = runtests.copy(
             tests=tests,
             rerun=True,
@@ -256,10 +259,18 @@ def _rerun_failed_tests(self, runtests: RunTests):
             match_tests_dict=match_tests_dict,
             output_on_failure=False)
         self.logger.set_tests(runtests)
-        self._run_tests_mp(runtests, self.num_workers)
+
+        msg = f"Re-running {len(tests)} failed tests in verbose mode"
+        if not self.single_process:
+            msg = f"{msg} in subprocesses"
+            self.log(msg)
+            self._run_tests_mp(runtests, self.num_workers)
+        else:
+            self.log(msg)
+            self.run_tests_sequentially(runtests)
         return runtests
 
-    def rerun_failed_tests(self, runtests: RunTests):
+    def rerun_failed_tests(self, runtests: RunTests) -> None:
         if self.python_cmd:
             # Temp patch for https://github.com/python/cpython/issues/94052
             self.log(
@@ -328,7 +339,7 @@ def run_bisect(self, runtests: RunTests) -> None:
             if not self._run_bisect(runtests, name, progress):
                 return
 
-    def display_result(self, runtests):
+    def display_result(self, runtests: RunTests) -> None:
         # If running the test suite for PGO then no one cares about results.
         if runtests.pgo:
             return
@@ -358,7 +369,7 @@ def run_test(
 
         return result
 
-    def run_tests_sequentially(self, runtests) -> None:
+    def run_tests_sequentially(self, runtests: RunTests) -> None:
         if self.coverage:
             tracer = trace.Trace(trace=False, count=True)
         else:
@@ -371,7 +382,7 @@ def run_tests_sequentially(self, runtests) -> None:
             tests = count(jobs, 'test')
         else:
             tests = 'tests'
-        msg = f"Run {tests} sequentially"
+        msg = f"Run {tests} sequentially in a single process"
         if runtests.timeout:
             msg += " (timeout: %s)" % format_duration(runtests.timeout)
         self.log(msg)
@@ -415,7 +426,7 @@ def run_tests_sequentially(self, runtests) -> None:
         if previous_test:
             print(previous_test)
 
-    def get_state(self):
+    def get_state(self) -> str:
         state = self.results.get_state(self.fail_env_changed)
         if self.first_state:
             state = f'{self.first_state} then {state}'
@@ -445,7 +456,12 @@ def finalize_tests(self, coverage: trace.CoverageResults | None) -> None:
         if self.junit_filename:
             self.results.write_junit(self.junit_filename)
 
-    def display_summary(self):
+    def display_summary(self) -> None:
+        if self.first_runtests is None:
+            raise ValueError(
+                "Should never call `display_summary()` before calling `_run_test()`"
+            )
+
         duration = time.perf_counter() - self.logger.start_time
         filtered = bool(self.match_tests)
 
@@ -459,7 +475,7 @@ def display_summary(self):
         state = self.get_state()
         print(f"Result: {state}")
 
-    def create_run_tests(self, tests: TestTuple):
+    def create_run_tests(self, tests: TestTuple) -> RunTests:
         return RunTests(
             tests,
             fail_fast=self.fail_fast,
@@ -515,7 +531,7 @@ def _run_tests(self, selected: TestTuple, tests: TestList | None) -> int:
         setup_process()
 
         if (runtests.hunt_refleak is not None) and (not self.num_workers):
-            # gh-109739: WindowsLoadTracker thread interfers with refleak check
+            # gh-109739: WindowsLoadTracker thread interferes with refleak check
             use_load_tracker = False
         else:
             # WindowsLoadTracker is only needed on Windows
@@ -586,6 +602,7 @@ def _add_cross_compile_opts(self, regrtest_opts):
                 '_PYTHON_PROJECT_BASE',
                 '_PYTHON_HOST_PLATFORM',
                 '_PYTHON_SYSCONFIGDATA_NAME',
+                "_PYTHON_SYSCONFIGDATA_PATH",
                 'PYTHONPATH'
             }
             old_environ = os.environ
@@ -599,7 +616,7 @@ def _add_cross_compile_opts(self, regrtest_opts):
             keep_environ = True
 
         if cross_compile and hostrunner:
-            if self.num_workers == 0:
+            if self.num_workers == 0 and not self.single_process:
                 # For now use only two cores for cross-compiled builds;
                 # hostrunner can be expensive.
                 regrtest_opts.extend(['-j', '2'])
@@ -669,9 +686,9 @@ def _execute_python(self, cmd, environ):
                           f"Command: {cmd_text}")
             # continue executing main()
 
-    def _add_python_opts(self):
-        python_opts = []
-        regrtest_opts = []
+    def _add_python_opts(self) -> None:
+        python_opts: list[str] = []
+        regrtest_opts: list[str] = []
 
         environ, keep_environ = self._add_cross_compile_opts(regrtest_opts)
         if self.ci_mode:
@@ -702,9 +719,17 @@ def _init(self):
 
         strip_py_suffix(self.cmdline_args)
 
-        self.tmp_dir = get_temp_dir(self.tmp_dir)
+        self._tmp_dir = get_temp_dir(self._tmp_dir)
+
+    @property
+    def tmp_dir(self) -> StrPath:
+        if self._tmp_dir is None:
+            raise ValueError(
+                "Should never use `.tmp_dir` before calling `.main()`"
+            )
+        return self._tmp_dir
 
-    def main(self, tests: TestList | None = None):
+    def main(self, tests: TestList | None = None) -> NoReturn:
         if self.want_add_python_opts:
             self._add_python_opts()
 
@@ -733,7 +758,7 @@ def main(self, tests: TestList | None = None):
         sys.exit(exitcode)
 
 
-def main(tests=None, _add_python_opts=False, **kwargs):
+def main(tests=None, _add_python_opts=False, **kwargs) -> NoReturn:
     """Run the Python suite."""
     ns = _parse_args(sys.argv[1:], **kwargs)
     Regrtest(ns, _add_python_opts=_add_python_opts).main(tests=tests)
diff --git a/Lib/test/libregrtest/mypy.ini b/Lib/test/libregrtest/mypy.ini
index 22c7c7a9acef14..3fa9afcb7a4a8c 100644
--- a/Lib/test/libregrtest/mypy.ini
+++ b/Lib/test/libregrtest/mypy.ini
@@ -15,19 +15,12 @@ strict = True
 
 # Various stricter settings that we can't yet enable
 # Try to enable these in the following order:
-disallow_any_generics = False
 disallow_incomplete_defs = False
 disallow_untyped_calls = False
 disallow_untyped_defs = False
 check_untyped_defs = False
 warn_return_any = False
 
-disable_error_code = return
-
-# Enable --strict-optional for these ASAP:
-[mypy-Lib.test.libregrtest.main.*,Lib.test.libregrtest.run_workers.*]
-strict_optional = False
-
 # Various internal modules that typeshed deliberately doesn't have stubs for:
 [mypy-_abc.*,_opcode.*,_overlapped.*,_testcapi.*,_testinternalcapi.*,test.*]
 ignore_missing_imports = True
diff --git a/Lib/test/libregrtest/pgo.py b/Lib/test/libregrtest/pgo.py
index e3a6927be5db1d..f762345c88cde3 100644
--- a/Lib/test/libregrtest/pgo.py
+++ b/Lib/test/libregrtest/pgo.py
@@ -50,7 +50,7 @@
     'test_xml_etree_c',
 ]
 
-def setup_pgo_tests(cmdline_args, pgo_extended: bool):
+def setup_pgo_tests(cmdline_args, pgo_extended: bool) -> None:
     if not cmdline_args and not pgo_extended:
         # run default set of tests for PGO training
         cmdline_args[:] = PGO_TESTS[:]
diff --git a/Lib/test/libregrtest/refleak.py b/Lib/test/libregrtest/refleak.py
index f582c0d3e7ff13..2e49b31e253d54 100644
--- a/Lib/test/libregrtest/refleak.py
+++ b/Lib/test/libregrtest/refleak.py
@@ -1,3 +1,4 @@
+import os
 import sys
 import warnings
 from inspect import isabstract
@@ -23,6 +24,30 @@ def _get_dump(cls):
                 cls._abc_negative_cache, cls._abc_negative_cache_version)
 
 
+def save_support_xml(filename):
+    if support.junit_xml_list is None:
+        return
+
+    import pickle
+    with open(filename, 'xb') as fp:
+        pickle.dump(support.junit_xml_list, fp)
+    support.junit_xml_list = None
+
+
+def restore_support_xml(filename):
+    try:
+        fp = open(filename, 'rb')
+    except FileNotFoundError:
+        return
+
+    import pickle
+    with fp:
+        xml_list = pickle.load(fp)
+    os.unlink(filename)
+
+    support.junit_xml_list = xml_list
+
+
 def runtest_refleak(test_name, test_func,
                     hunt_refleak: HuntRefleak,
                     quiet: bool):
@@ -85,7 +110,7 @@ def get_pooled_int(value):
     getunicodeinternedsize = sys.getunicodeinternedsize
     fd_count = os_helper.fd_count
     # initialize variables to make pyflakes quiet
-    rc_before = alloc_before = fd_before = interned_before = 0
+    rc_before = alloc_before = fd_before = interned_immortal_before = 0
 
     if not quiet:
         print("beginning", repcount, "repetitions. Showing number of leaks "
@@ -95,7 +120,8 @@ def get_pooled_int(value):
         numbers = numbers[:warmups] + ':' + numbers[warmups:]
         print(numbers, file=sys.stderr, flush=True)
 
-    results = None
+    xml_filename = 'refleak-xml.tmp'
+    result = None
     dash_R_cleanup(fs, ps, pic, zdc, abcs)
     support.gc_collect()
 
@@ -103,10 +129,11 @@ def get_pooled_int(value):
         current = refleak_helper._hunting_for_refleaks
         refleak_helper._hunting_for_refleaks = True
         try:
-            results = test_func()
+            result = test_func()
         finally:
             refleak_helper._hunting_for_refleaks = current
 
+        save_support_xml(xml_filename)
         dash_R_cleanup(fs, ps, pic, zdc, abcs)
         support.gc_collect()
 
@@ -114,9 +141,11 @@ def get_pooled_int(value):
         # Also, readjust the reference counts and alloc blocks by ignoring
         # any strings that might have been interned during test_func. These
         # strings will be deallocated at runtime shutdown
-        interned_after = getunicodeinternedsize()
-        alloc_after = getallocatedblocks() - interned_after
-        rc_after = gettotalrefcount() - interned_after * 2
+        interned_immortal_after = getunicodeinternedsize(
+            # Use an internal-only keyword argument that mypy doesn't know yet
+            _only_immortal=True)  # type: ignore[call-arg]
+        alloc_after = getallocatedblocks() - interned_immortal_after
+        rc_after = gettotalrefcount()
         fd_after = fd_count()
 
         rc_deltas[i] = get_pooled_int(rc_after - rc_before)
@@ -143,7 +172,9 @@ def get_pooled_int(value):
         alloc_before = alloc_after
         rc_before = rc_after
         fd_before = fd_after
-        interned_before = interned_after
+        interned_immortal_before = interned_immortal_after
+
+        restore_support_xml(xml_filename)
 
     if not quiet:
         print(file=sys.stderr)
@@ -189,7 +220,7 @@ def check_fd_deltas(deltas):
                 failed = True
             else:
                 print(' (this is fine)', file=sys.stderr, flush=True)
-    return (failed, results)
+    return (failed, result)
 
 
 def dash_R_cleanup(fs, ps, pic, zdc, abcs):
@@ -216,9 +247,13 @@ def dash_R_cleanup(fs, ps, pic, zdc, abcs):
     abs_classes = filter(isabstract, abs_classes)
     for abc in abs_classes:
         for obj in abc.__subclasses__() + [abc]:
-            for ref in abcs.get(obj, set()):
-                if ref() is not None:
-                    obj.register(ref())
+            refs = abcs.get(obj, None)
+            if refs is not None:
+                obj._abc_registry_clear()
+                for ref in refs:
+                    subclass = ref()
+                    if subclass is not None:
+                        obj.register(subclass)
             obj._abc_caches_clear()
 
     # Clear caches
@@ -228,7 +263,7 @@ def dash_R_cleanup(fs, ps, pic, zdc, abcs):
     sys._clear_internal_caches()
 
 
-def warm_caches():
+def warm_caches() -> None:
     # char cache
     s = bytes(range(256))
     for i in range(256):
diff --git a/Lib/test/libregrtest/result.py b/Lib/test/libregrtest/result.py
index 74eae40440435d..7553efe5e8abeb 100644
--- a/Lib/test/libregrtest/result.py
+++ b/Lib/test/libregrtest/result.py
@@ -149,6 +149,7 @@ def __str__(self) -> str:
             case State.DID_NOT_RUN:
                 return f"{self.test_name} ran no tests"
             case State.TIMEOUT:
+                assert self.duration is not None, "self.duration is None"
                 return f"{self.test_name} timed out ({format_duration(self.duration)})"
             case _:
                 raise ValueError("unknown result state: {state!r}")
diff --git a/Lib/test/libregrtest/results.py b/Lib/test/libregrtest/results.py
index 85c82052eae19b..9eda926966dc7e 100644
--- a/Lib/test/libregrtest/results.py
+++ b/Lib/test/libregrtest/results.py
@@ -1,5 +1,6 @@
 import sys
 import trace
+from typing import TYPE_CHECKING
 
 from .runtests import RunTests
 from .result import State, TestResult, TestStats, Location
@@ -7,6 +8,9 @@
     StrPath, TestName, TestTuple, TestList, FilterDict,
     printlist, count, format_duration)
 
+if TYPE_CHECKING:
+    from xml.etree.ElementTree import Element
+
 
 # Python uses exit code 1 when an exception is not caught
 # argparse.ArgumentParser.error() uses exit code 2
@@ -18,7 +22,7 @@
 
 
 class TestResults:
-    def __init__(self):
+    def __init__(self) -> None:
         self.bad: TestList = []
         self.good: TestList = []
         self.rerun_bad: TestList = []
@@ -34,26 +38,26 @@ def __init__(self):
         self.test_times: list[tuple[float, TestName]] = []
         self.stats = TestStats()
         # used by --junit-xml
-        self.testsuite_xml: list = []
+        self.testsuite_xml: list['Element'] = []
         # used by -T with -j
         self.covered_lines: set[Location] = set()
 
-    def is_all_good(self):
+    def is_all_good(self) -> bool:
         return (not self.bad
                 and not self.skipped
                 and not self.interrupted
                 and not self.worker_bug)
 
-    def get_executed(self):
+    def get_executed(self) -> set[TestName]:
         return (set(self.good) | set(self.bad) | set(self.skipped)
                 | set(self.resource_denied) | set(self.env_changed)
                 | set(self.run_no_tests))
 
-    def no_tests_run(self):
+    def no_tests_run(self) -> bool:
         return not any((self.good, self.bad, self.skipped, self.interrupted,
                         self.env_changed))
 
-    def get_state(self, fail_env_changed):
+    def get_state(self, fail_env_changed: bool) -> str:
         state = []
         if self.bad:
             state.append("FAILURE")
@@ -71,7 +75,7 @@ def get_state(self, fail_env_changed):
 
         return ', '.join(state)
 
-    def get_exitcode(self, fail_env_changed, fail_rerun):
+    def get_exitcode(self, fail_env_changed: bool, fail_rerun: bool) -> int:
         exitcode = 0
         if self.bad:
             exitcode = EXITCODE_BAD_TEST
@@ -87,7 +91,7 @@ def get_exitcode(self, fail_env_changed, fail_rerun):
             exitcode = EXITCODE_BAD_TEST
         return exitcode
 
-    def accumulate_result(self, result: TestResult, runtests: RunTests):
+    def accumulate_result(self, result: TestResult, runtests: RunTests) -> None:
         test_name = result.test_name
         rerun = runtests.rerun
         fail_env_changed = runtests.fail_env_changed
@@ -135,7 +139,7 @@ def get_coverage_results(self) -> trace.CoverageResults:
         counts = {loc: 1 for loc in self.covered_lines}
         return trace.CoverageResults(counts=counts)
 
-    def need_rerun(self):
+    def need_rerun(self) -> bool:
         return bool(self.rerun_results)
 
     def prepare_rerun(self, *, clear: bool = True) -> tuple[TestTuple, FilterDict]:
@@ -158,7 +162,7 @@ def prepare_rerun(self, *, clear: bool = True) -> tuple[TestTuple, FilterDict]:
 
         return (tuple(tests), match_tests_dict)
 
-    def add_junit(self, xml_data: list[str]):
+    def add_junit(self, xml_data: list[str]) -> None:
         import xml.etree.ElementTree as ET
         for e in xml_data:
             try:
@@ -167,7 +171,7 @@ def add_junit(self, xml_data: list[str]):
                 print(xml_data, file=sys.__stderr__)
                 raise
 
-    def write_junit(self, filename: StrPath):
+    def write_junit(self, filename: StrPath) -> None:
         if not self.testsuite_xml:
             # Don't create empty XML file
             return
@@ -192,7 +196,7 @@ def write_junit(self, filename: StrPath):
             for s in ET.tostringlist(root):
                 f.write(s)
 
-    def display_result(self, tests: TestTuple, quiet: bool, print_slowest: bool):
+    def display_result(self, tests: TestTuple, quiet: bool, print_slowest: bool) -> None:
         if print_slowest:
             self.test_times.sort(reverse=True)
             print()
@@ -204,7 +208,7 @@ def display_result(self, tests: TestTuple, quiet: bool, print_slowest: bool):
         omitted = set(tests) - self.get_executed()
 
         # less important
-        all_tests.append((omitted, "test", "{} omitted:"))
+        all_tests.append((sorted(omitted), "test", "{} omitted:"))
         if not quiet:
             all_tests.append((self.skipped, "test", "{} skipped:"))
             all_tests.append((self.resource_denied, "test", "{} skipped (resource denied):"))
@@ -234,7 +238,7 @@ def display_result(self, tests: TestTuple, quiet: bool, print_slowest: bool):
             print()
             print("Test suite interrupted by signal SIGINT.")
 
-    def display_summary(self, first_runtests: RunTests, filtered: bool):
+    def display_summary(self, first_runtests: RunTests, filtered: bool) -> None:
         # Total tests
         stats = self.stats
         text = f'run={stats.tests_run:,}'
diff --git a/Lib/test/libregrtest/run_workers.py b/Lib/test/libregrtest/run_workers.py
index 235047cf2e563c..3c6d13215fd79d 100644
--- a/Lib/test/libregrtest/run_workers.py
+++ b/Lib/test/libregrtest/run_workers.py
@@ -102,6 +102,9 @@ def __init__(self,
         super().__init__()
 
 
+_NOT_RUNNING = "<not running>"
+
+
 class WorkerThread(threading.Thread):
     def __init__(self, worker_id: int, runner: "RunWorkers") -> None:
         super().__init__()
@@ -111,8 +114,8 @@ def __init__(self, worker_id: int, runner: "RunWorkers") -> None:
         self.output = runner.output
         self.timeout = runner.worker_timeout
         self.log = runner.log
-        self.test_name: TestName | None = None
-        self.start_time: float | None = None
+        self.test_name = _NOT_RUNNING
+        self.start_time = time.monotonic()
         self._popen: subprocess.Popen[str] | None = None
         self._killed = False
         self._stopped = False
@@ -129,7 +132,7 @@ def __repr__(self) -> str:
         popen = self._popen
         if popen is not None:
             dt = time.monotonic() - self.start_time
-            info.extend((f'pid={self._popen.pid}',
+            info.extend((f'pid={popen.pid}',
                          f'time={format_duration(dt)}'))
         return '<%s>' % ' '.join(info)
 
@@ -205,6 +208,7 @@ def _run_process(self, runtests: WorkerRunTests, output_fd: int,
                     # on reading closed stdout
                     raise ExitThread
                 raise
+            return None
         except:
             self._kill()
             raise
@@ -394,7 +398,7 @@ def run(self) -> None:
                 except WorkerError as exc:
                     mp_result = exc.mp_result
                 finally:
-                    self.test_name = None
+                    self.test_name = _NOT_RUNNING
                 mp_result.result.duration = time.monotonic() - self.start_time
                 self.output.put((False, mp_result))
 
@@ -409,6 +413,9 @@ def run(self) -> None:
 
     def _wait_completed(self) -> None:
         popen = self._popen
+        # only needed for mypy:
+        if popen is None:
+            raise ValueError("Should never access `._popen` before calling `.run()`")
 
         try:
             popen.wait(WAIT_COMPLETED_TIMEOUT)
@@ -444,7 +451,7 @@ def get_running(workers: list[WorkerThread]) -> str | None:
     running: list[str] = []
     for worker in workers:
         test_name = worker.test_name
-        if not test_name:
+        if test_name == _NOT_RUNNING:
             continue
         dt = time.monotonic() - worker.start_time
         if dt >= PROGRESS_MIN_TIME:
@@ -476,7 +483,7 @@ def __init__(self, num_workers: int, runtests: RunTests,
             self.worker_timeout: float | None = min(self.timeout * 1.5, self.timeout + 5 * 60)
         else:
             self.worker_timeout = None
-        self.workers: list[WorkerThread] | None = None
+        self.workers: list[WorkerThread] = []
 
         jobs = self.runtests.get_jobs()
         if jobs is not None:
@@ -496,7 +503,7 @@ def start_workers(self) -> None:
         processes = plural(nworkers, "process", "processes")
         msg = (f"Run {tests} in parallel using "
                f"{nworkers} worker {processes}")
-        if self.timeout:
+        if self.timeout and self.worker_timeout is not None:
             msg += (" (timeout: %s, worker timeout: %s)"
                     % (format_duration(self.timeout),
                        format_duration(self.worker_timeout)))
@@ -538,6 +545,7 @@ def _get_result(self) -> QueueOutput | None:
                 running = get_running(self.workers)
                 if running:
                     self.log(running)
+        return None
 
     def display_result(self, mp_result: MultiprocessResult) -> None:
         result = mp_result.result
@@ -547,7 +555,7 @@ def display_result(self, mp_result: MultiprocessResult) -> None:
         if mp_result.err_msg:
             # WORKER_BUG
             text += ' (%s)' % mp_result.err_msg
-        elif (result.duration >= PROGRESS_MIN_TIME and not pgo):
+        elif (result.duration and result.duration >= PROGRESS_MIN_TIME and not pgo):
             text += ' (%s)' % format_duration(result.duration)
         if not pgo:
             running = get_running(self.workers)
diff --git a/Lib/test/libregrtest/runtests.py b/Lib/test/libregrtest/runtests.py
index 8e9779524c56a2..7b607d4a559d88 100644
--- a/Lib/test/libregrtest/runtests.py
+++ b/Lib/test/libregrtest/runtests.py
@@ -5,12 +5,12 @@
 import shlex
 import subprocess
 import sys
-from typing import Any
+from typing import Any, Iterator
 
 from test import support
 
 from .utils import (
-    StrPath, StrJSON, TestTuple, TestFilter, FilterTuple, FilterDict)
+    StrPath, StrJSON, TestTuple, TestName, TestFilter, FilterTuple, FilterDict)
 
 
 class JsonFileType:
@@ -28,7 +28,7 @@ class JsonFile:
     file: int | None
     file_type: str
 
-    def configure_subprocess(self, popen_kwargs: dict) -> None:
+    def configure_subprocess(self, popen_kwargs: dict[str, Any]) -> None:
         match self.file_type:
             case JsonFileType.UNIX_FD:
                 # Unix file descriptor
@@ -41,8 +41,8 @@ def configure_subprocess(self, popen_kwargs: dict) -> None:
                 popen_kwargs['startupinfo'] = startupinfo
 
     @contextlib.contextmanager
-    def inherit_subprocess(self):
-        if self.file_type == JsonFileType.WINDOWS_HANDLE:
+    def inherit_subprocess(self) -> Iterator[None]:
+        if sys.platform == 'win32' and self.file_type == JsonFileType.WINDOWS_HANDLE:
             os.set_handle_inheritable(self.file, True)
             try:
                 yield
@@ -106,25 +106,25 @@ def copy(self, **override) -> 'RunTests':
         state.update(override)
         return RunTests(**state)
 
-    def create_worker_runtests(self, **override):
+    def create_worker_runtests(self, **override) -> 'WorkerRunTests':
         state = dataclasses.asdict(self)
         state.update(override)
         return WorkerRunTests(**state)
 
-    def get_match_tests(self, test_name) -> FilterTuple | None:
+    def get_match_tests(self, test_name: TestName) -> FilterTuple | None:
         if self.match_tests_dict is not None:
             return self.match_tests_dict.get(test_name, None)
         else:
             return None
 
-    def get_jobs(self):
+    def get_jobs(self) -> int | None:
         # Number of run_single_test() calls needed to run all tests.
         # None means that there is not bound limit (--forever option).
         if self.forever:
             return None
         return len(self.tests)
 
-    def iter_tests(self):
+    def iter_tests(self) -> Iterator[TestName]:
         if self.forever:
             while True:
                 yield from self.tests
diff --git a/Lib/test/libregrtest/setup.py b/Lib/test/libregrtest/setup.py
index 9e9741493e9a5b..ba57f06b4841d4 100644
--- a/Lib/test/libregrtest/setup.py
+++ b/Lib/test/libregrtest/setup.py
@@ -25,9 +25,10 @@ def setup_test_dir(testdir: str | None) -> None:
         sys.path.insert(0, os.path.abspath(testdir))
 
 
-def setup_process():
+def setup_process() -> None:
     fix_umask()
 
+    assert sys.__stderr__ is not None, "sys.__stderr__ is None"
     try:
         stderr_fd = sys.__stderr__.fileno()
     except (ValueError, AttributeError):
@@ -35,7 +36,7 @@ def setup_process():
         # and ValueError on a closed stream.
         #
         # Catch AttributeError for stderr being None.
-        stderr_fd = None
+        pass
     else:
         # Display the Python traceback on fatal errors (e.g. segfault)
         faulthandler.enable(all_threads=True, file=stderr_fd)
@@ -68,7 +69,7 @@ def setup_process():
             for index, path in enumerate(module.__path__):
                 module.__path__[index] = os.path.abspath(path)
         if getattr(module, '__file__', None):
-            module.__file__ = os.path.abspath(module.__file__)
+            module.__file__ = os.path.abspath(module.__file__)  # type: ignore[type-var]
 
     if hasattr(sys, 'addaudithook'):
         # Add an auditing hook for all tests to ensure PySys_Audit is tested
@@ -87,7 +88,7 @@ def _test_audit_hook(name, args):
         os.environ.setdefault(UNICODE_GUARD_ENV, FS_NONASCII)
 
 
-def setup_tests(runtests: RunTests):
+def setup_tests(runtests: RunTests) -> None:
     support.verbose = runtests.verbose
     support.failfast = runtests.fail_fast
     support.PGO = runtests.pgo
diff --git a/Lib/test/libregrtest/single.py b/Lib/test/libregrtest/single.py
index fc2f2716ad4ce0..adc8f1f455579f 100644
--- a/Lib/test/libregrtest/single.py
+++ b/Lib/test/libregrtest/single.py
@@ -57,7 +57,10 @@ def _run_suite(suite):
     result = runner.run(suite)
 
     if support.junit_xml_list is not None:
-        support.junit_xml_list.append(result.get_xml_element())
+        import xml.etree.ElementTree as ET
+        xml_elem = result.get_xml_element()
+        xml_str = ET.tostring(xml_elem).decode('ascii')
+        support.junit_xml_list.append(xml_str)
 
     if not result.testsRun and not result.skipped and not result.errors:
         raise support.TestDidNotRun
@@ -280,9 +283,7 @@ def _runtest(result: TestResult, runtests: RunTests) -> None:
 
         xml_list = support.junit_xml_list
         if xml_list:
-            import xml.etree.ElementTree as ET
-            result.xml_data = [ET.tostring(x).decode('us-ascii')
-                               for x in xml_list]
+            result.xml_data = xml_list
     finally:
         if use_timeout:
             faulthandler.cancel_dump_traceback_later()
diff --git a/Lib/test/libregrtest/testresult.py b/Lib/test/libregrtest/testresult.py
index de23fdd59ded95..1820f354572521 100644
--- a/Lib/test/libregrtest/testresult.py
+++ b/Lib/test/libregrtest/testresult.py
@@ -9,6 +9,7 @@
 import traceback
 import unittest
 from test import support
+from test.libregrtest.utils import sanitize_xml
 
 class RegressionTestResult(unittest.TextTestResult):
     USE_XML = False
@@ -65,23 +66,24 @@ def _add_result(self, test, capture=False, **args):
         if capture:
             if self._stdout_buffer is not None:
                 stdout = self._stdout_buffer.getvalue().rstrip()
-                ET.SubElement(e, 'system-out').text = stdout
+                ET.SubElement(e, 'system-out').text = sanitize_xml(stdout)
             if self._stderr_buffer is not None:
                 stderr = self._stderr_buffer.getvalue().rstrip()
-                ET.SubElement(e, 'system-err').text = stderr
+                ET.SubElement(e, 'system-err').text = sanitize_xml(stderr)
 
         for k, v in args.items():
             if not k or not v:
                 continue
+
             e2 = ET.SubElement(e, k)
             if hasattr(v, 'items'):
                 for k2, v2 in v.items():
                     if k2:
-                        e2.set(k2, str(v2))
+                        e2.set(k2, sanitize_xml(str(v2)))
                     else:
-                        e2.text = str(v2)
+                        e2.text = sanitize_xml(str(v2))
             else:
-                e2.text = str(v)
+                e2.text = sanitize_xml(str(v))
 
     @classmethod
     def __makeErrorDict(cls, err_type, err_value, err_tb):
diff --git a/Lib/test/libregrtest/tsan.py b/Lib/test/libregrtest/tsan.py
index dd18ae2584f5d8..822ac0f4044d9e 100644
--- a/Lib/test/libregrtest/tsan.py
+++ b/Lib/test/libregrtest/tsan.py
@@ -28,6 +28,6 @@
 ]
 
 
-def setup_tsan_tests(cmdline_args):
+def setup_tsan_tests(cmdline_args) -> None:
     if not cmdline_args:
         cmdline_args[:] = TSAN_TESTS[:]
diff --git a/Lib/test/libregrtest/utils.py b/Lib/test/libregrtest/utils.py
index 8253d330b95b81..2b8362e7963183 100644
--- a/Lib/test/libregrtest/utils.py
+++ b/Lib/test/libregrtest/utils.py
@@ -5,6 +5,7 @@
 import os.path
 import platform
 import random
+import re
 import shlex
 import signal
 import subprocess
@@ -57,7 +58,7 @@
 FilterDict = dict[TestName, FilterTuple]
 
 
-def format_duration(seconds):
+def format_duration(seconds: float) -> str:
     ms = math.ceil(seconds * 1e3)
     seconds, ms = divmod(ms, 1000)
     minutes, seconds = divmod(seconds, 60)
@@ -91,7 +92,7 @@ def strip_py_suffix(names: list[str] | None) -> None:
             names[idx] = basename
 
 
-def plural(n, singular, plural=None):
+def plural(n: int, singular: str, plural: str | None = None) -> str:
     if n == 1:
         return singular
     elif plural is not None:
@@ -100,7 +101,7 @@ def plural(n, singular, plural=None):
         return singular + 's'
 
 
-def count(n, word):
+def count(n: int, word: str) -> str:
     if n == 1:
         return f"{n} {word}"
     else:
@@ -122,14 +123,14 @@ def printlist(x, width=70, indent=4, file=None):
           file=file)
 
 
-def print_warning(msg):
+def print_warning(msg: str) -> None:
     support.print_warning(msg)
 
 
-orig_unraisablehook = None
+orig_unraisablehook: Callable[..., None] | None = None
 
 
-def regrtest_unraisable_hook(unraisable):
+def regrtest_unraisable_hook(unraisable) -> None:
     global orig_unraisablehook
     support.environment_altered = True
     support.print_warning("Unraisable exception")
@@ -137,22 +138,23 @@ def regrtest_unraisable_hook(unraisable):
     try:
         support.flush_std_streams()
         sys.stderr = support.print_warning.orig_stderr
+        assert orig_unraisablehook is not None, "orig_unraisablehook not set"
         orig_unraisablehook(unraisable)
         sys.stderr.flush()
     finally:
         sys.stderr = old_stderr
 
 
-def setup_unraisable_hook():
+def setup_unraisable_hook() -> None:
     global orig_unraisablehook
     orig_unraisablehook = sys.unraisablehook
     sys.unraisablehook = regrtest_unraisable_hook
 
 
-orig_threading_excepthook = None
+orig_threading_excepthook: Callable[..., None] | None = None
 
 
-def regrtest_threading_excepthook(args):
+def regrtest_threading_excepthook(args) -> None:
     global orig_threading_excepthook
     support.environment_altered = True
     support.print_warning(f"Uncaught thread exception: {args.exc_type.__name__}")
@@ -160,13 +162,14 @@ def regrtest_threading_excepthook(args):
     try:
         support.flush_std_streams()
         sys.stderr = support.print_warning.orig_stderr
+        assert orig_threading_excepthook is not None, "orig_threading_excepthook not set"
         orig_threading_excepthook(args)
         sys.stderr.flush()
     finally:
         sys.stderr = old_stderr
 
 
-def setup_threading_excepthook():
+def setup_threading_excepthook() -> None:
     global orig_threading_excepthook
     import threading
     orig_threading_excepthook = threading.excepthook
@@ -263,6 +266,12 @@ def clear_caches():
         for f in typing._cleanups:
             f()
 
+        import inspect
+        abs_classes = filter(inspect.isabstract, typing.__dict__.values())
+        for abc in abs_classes:
+            for obj in abc.__subclasses__() + [abc]:
+                obj._abc_caches_clear()
+
     try:
         fractions = sys.modules['fractions']
     except KeyError:
@@ -293,29 +302,78 @@ def get_build_info():
 
     config_args = sysconfig.get_config_var('CONFIG_ARGS') or ''
     cflags = sysconfig.get_config_var('PY_CFLAGS') or ''
-    cflags_nodist = sysconfig.get_config_var('PY_CFLAGS_NODIST') or ''
+    cflags += ' ' + (sysconfig.get_config_var('PY_CFLAGS_NODIST') or '')
     ldflags_nodist = sysconfig.get_config_var('PY_LDFLAGS_NODIST') or ''
 
     build = []
 
     # --disable-gil
     if sysconfig.get_config_var('Py_GIL_DISABLED'):
-        build.append("free_threading")
+        if not sys.flags.ignore_environment:
+            PYTHON_GIL = os.environ.get('PYTHON_GIL', None)
+            if PYTHON_GIL:
+                PYTHON_GIL = (PYTHON_GIL == '1')
+        else:
+            PYTHON_GIL = None
+
+        free_threading = "free_threading"
+        if PYTHON_GIL is not None:
+            free_threading = f"{free_threading} GIL={int(PYTHON_GIL)}"
+        build.append(free_threading)
 
     if hasattr(sys, 'gettotalrefcount'):
         # --with-pydebug
         build.append('debug')
 
-        if '-DNDEBUG' in (cflags + cflags_nodist):
+        if '-DNDEBUG' in cflags:
             build.append('without_assert')
     else:
         build.append('release')
 
         if '--with-assertions' in config_args:
             build.append('with_assert')
-        elif '-DNDEBUG' not in (cflags + cflags_nodist):
+        elif '-DNDEBUG' not in cflags:
             build.append('with_assert')
 
+    # --enable-experimental-jit
+    tier2 = re.search('-D_Py_TIER2=([0-9]+)', cflags)
+    if tier2:
+        tier2 = int(tier2.group(1))
+
+    if not sys.flags.ignore_environment:
+        PYTHON_JIT = os.environ.get('PYTHON_JIT', None)
+        if PYTHON_JIT:
+            PYTHON_JIT = (PYTHON_JIT != '0')
+    else:
+        PYTHON_JIT = None
+
+    if tier2 == 1:  # =yes
+        if PYTHON_JIT == False:
+            jit = 'JIT=off'
+        else:
+            jit = 'JIT'
+    elif tier2 == 3:  # =yes-off
+        if PYTHON_JIT:
+            jit = 'JIT'
+        else:
+            jit = 'JIT=off'
+    elif tier2 == 4:  # =interpreter
+        if PYTHON_JIT == False:
+            jit = 'JIT-interpreter=off'
+        else:
+            jit = 'JIT-interpreter'
+    elif tier2 == 6:  # =interpreter-off (Secret option!)
+        if PYTHON_JIT:
+            jit = 'JIT-interpreter'
+        else:
+            jit = 'JIT-interpreter=off'
+    elif '-D_Py_JIT' in cflags:
+        jit = 'JIT'
+    else:
+        jit = None
+    if jit:
+        build.append(jit)
+
     # --enable-framework=name
     framework = sysconfig.get_config_var('PYTHONFRAMEWORK')
     if framework:
@@ -336,6 +394,11 @@ def get_build_info():
     if support.check_cflags_pgo():
         # PGO (--enable-optimizations)
         optimizations.append('PGO')
+
+    if support.check_bolt_optimized():
+        # BOLT (--enable-bolt)
+        optimizations.append('BOLT')
+
     if optimizations:
         build.append('+'.join(optimizations))
 
@@ -415,7 +478,7 @@ def get_temp_dir(tmp_dir: StrPath | None = None) -> StrPath:
     return os.path.abspath(tmp_dir)
 
 
-def fix_umask():
+def fix_umask() -> None:
     if support.is_emscripten:
         # Emscripten has default umask 0o777, which breaks some tests.
         # see https://github.com/emscripten-core/emscripten/issues/17269
@@ -511,7 +574,8 @@ def abs_module_name(test_name: TestName, test_dir: StrPath | None) -> TestName:
     'setUpModule', 'tearDownModule',
 ))
 
-def normalize_test_name(test_full_name, *, is_error=False):
+def normalize_test_name(test_full_name: str, *,
+                        is_error: bool = False) -> str | None:
     short_name = test_full_name.split(" ")[0]
     if is_error and short_name in _TEST_LIFECYCLE_HOOKS:
         if test_full_name.startswith(('setUpModule (', 'tearDownModule (')):
@@ -532,7 +596,7 @@ def normalize_test_name(test_full_name, *, is_error=False):
     return short_name
 
 
-def adjust_rlimit_nofile():
+def adjust_rlimit_nofile() -> None:
     """
     On macOS the default fd limit (RLIMIT_NOFILE) is sometimes too low (256)
     for our test suite to succeed. Raise it to something more reasonable. 1024
@@ -558,17 +622,17 @@ def adjust_rlimit_nofile():
                           f"{new_fd_limit}: {err}.")
 
 
-def get_host_runner():
+def get_host_runner() -> str:
     if (hostrunner := os.environ.get("_PYTHON_HOSTRUNNER")) is None:
         hostrunner = sysconfig.get_config_var("HOSTRUNNER")
     return hostrunner
 
 
-def is_cross_compiled():
+def is_cross_compiled() -> bool:
     return ('_PYTHON_HOST_PLATFORM' in os.environ)
 
 
-def format_resources(use_resources: Iterable[str]):
+def format_resources(use_resources: Iterable[str]) -> str:
     use_resources = set(use_resources)
     all_resources = set(ALL_RESOURCES)
 
@@ -593,7 +657,7 @@ def format_resources(use_resources: Iterable[str]):
 
 
 def display_header(use_resources: tuple[str, ...],
-                   python_cmd: tuple[str, ...] | None):
+                   python_cmd: tuple[str, ...] | None) -> None:
     # Print basic platform information
     print("==", platform.python_implementation(), *sys.version.split())
     print("==", platform.platform(aliased=True),
@@ -671,7 +735,7 @@ def display_header(use_resources: tuple[str, ...],
     print(flush=True)
 
 
-def cleanup_temp_dir(tmp_dir: StrPath):
+def cleanup_temp_dir(tmp_dir: StrPath) -> None:
     import glob
 
     path = os.path.join(glob.escape(tmp_dir), TMP_PREFIX + '*')
@@ -712,3 +776,24 @@ def get_signal_name(exitcode):
         pass
 
     return None
+
+
+ILLEGAL_XML_CHARS_RE = re.compile(
+    '['
+    # Control characters; newline (\x0A and \x0D) and TAB (\x09) are legal
+    '\x00-\x08\x0B\x0C\x0E-\x1F'
+    # Surrogate characters
+    '\uD800-\uDFFF'
+    # Special Unicode characters
+    '\uFFFE'
+    '\uFFFF'
+    # Match multiple sequential invalid characters for better efficiency
+    ']+')
+
+def _sanitize_xml_replace(regs):
+    text = regs[0]
+    return ''.join(f'\\x{ord(ch):02x}' if ch <= '\xff' else ascii(ch)[1:-1]
+                   for ch in text)
+
+def sanitize_xml(text: str) -> str:
+    return ILLEGAL_XML_CHARS_RE.sub(_sanitize_xml_replace, text)
diff --git a/Lib/test/libregrtest/worker.py b/Lib/test/libregrtest/worker.py
index f8b8e45eca3276..d232ea69483277 100644
--- a/Lib/test/libregrtest/worker.py
+++ b/Lib/test/libregrtest/worker.py
@@ -17,7 +17,7 @@
 
 
 def create_worker_process(runtests: WorkerRunTests, output_fd: int,
-                          tmp_dir: StrPath | None = None) -> subprocess.Popen:
+                          tmp_dir: StrPath | None = None) -> subprocess.Popen[str]:
     worker_json = runtests.as_json()
 
     cmd = runtests.create_python_cmd()
@@ -98,7 +98,7 @@ def worker_process(worker_json: StrJSON) -> NoReturn:
     sys.exit(0)
 
 
-def main():
+def main() -> NoReturn:
     if len(sys.argv) != 2:
         print("usage: python -m test.libregrtest.worker JSON")
         sys.exit(1)
diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
index 89cd10f76a318e..dbc5ef4f9f2cd5 100644
--- a/Lib/test/list_tests.py
+++ b/Lib/test/list_tests.py
@@ -191,6 +191,14 @@ def test_setslice(self):
 
         self.assertRaises(TypeError, a.__setitem__)
 
+    def test_slice_assign_iterator(self):
+        x = self.type2test(range(5))
+        x[0:3] = reversed(range(3))
+        self.assertEqual(x, self.type2test([2, 1, 0, 3, 4]))
+
+        x[:] = reversed(range(3))
+        self.assertEqual(x, self.type2test([2, 1, 0]))
+
     def test_delslice(self):
         a = self.type2test([0, 1])
         del a[1:2]
diff --git a/Lib/test/lock_tests.py b/Lib/test/lock_tests.py
index 024c6debcd4a54..8c8f8901f00178 100644
--- a/Lib/test/lock_tests.py
+++ b/Lib/test/lock_tests.py
@@ -1013,6 +1013,10 @@ def multipass(self, results, n):
         self.assertEqual(self.barrier.n_waiting, 0)
         self.assertFalse(self.barrier.broken)
 
+    def test_constructor(self):
+        self.assertRaises(ValueError, self.barriertype, parties=0)
+        self.assertRaises(ValueError, self.barriertype, parties=-1)
+
     def test_barrier(self, passes=1):
         """
         Test that a barrier is passed in lockstep
diff --git a/Lib/test/mathdata/ieee754.txt b/Lib/test/mathdata/ieee754.txt
index a8b8a0a2148f00..3e986cdb102807 100644
--- a/Lib/test/mathdata/ieee754.txt
+++ b/Lib/test/mathdata/ieee754.txt
@@ -51,7 +51,7 @@ nan
 >>> INF / INF
 nan
 
-However unambigous operations with inf return inf:
+However unambiguous operations with inf return inf:
 >>> INF * INF
 inf
 >>> 1.5 * INF
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 93e7dbbd103934..d9fdb2fdd5ad9f 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -26,7 +26,7 @@
 from test import support
 from test.support import os_helper
 from test.support import (
-    TestFailed, run_with_locale, no_tracing,
+    TestFailed, run_with_locales, no_tracing,
     _2G, _4G, bigmemtest
     )
 from test.support.import_helper import forget
@@ -144,6 +144,14 @@ class E(C):
     def __getinitargs__(self):
         return ()
 
+import __main__
+__main__.C = C
+C.__module__ = "__main__"
+__main__.D = D
+D.__module__ = "__main__"
+__main__.E = E
+E.__module__ = "__main__"
+
 # Simple mutable object.
 class Object:
     pass
@@ -157,14 +165,6 @@ def __reduce__(self):
         # Shouldn't support the recursion itself
         return K, (self.value,)
 
-import __main__
-__main__.C = C
-C.__module__ = "__main__"
-__main__.D = D
-D.__module__ = "__main__"
-__main__.E = E
-E.__module__ = "__main__"
-
 class myint(int):
     def __init__(self, x):
         self.str = str(x)
@@ -1179,6 +1179,153 @@ def test_compat_unpickle(self):
             self.assertIs(type(unpickled), collections.UserDict)
             self.assertEqual(unpickled, collections.UserDict({1: 2}))
 
+    def test_load_global(self):
+        self.assertIs(self.loads(b'cbuiltins\nstr\n.'), str)
+        self.assertIs(self.loads(b'cmath\nlog\n.'), math.log)
+        self.assertIs(self.loads(b'cos.path\njoin\n.'), os.path.join)
+        self.assertIs(self.loads(b'\x80\x04cbuiltins\nstr.upper\n.'), str.upper)
+        with support.swap_item(sys.modules, 'mödule', types.SimpleNamespace(glöbal=42)):
+            self.assertEqual(self.loads(b'\x80\x04cm\xc3\xb6dule\ngl\xc3\xb6bal\n.'), 42)
+
+        self.assertRaises(UnicodeDecodeError, self.loads, b'c\xff\nlog\n.')
+        self.assertRaises(UnicodeDecodeError, self.loads, b'cmath\n\xff\n.')
+        self.assertRaises(self.truncated_errors, self.loads, b'c\nlog\n.')
+        self.assertRaises(self.truncated_errors, self.loads, b'cmath\n\n.')
+        self.assertRaises(self.truncated_errors, self.loads, b'\x80\x04cmath\n\n.')
+
+    def test_load_stack_global(self):
+        self.assertIs(self.loads(b'\x8c\x08builtins\x8c\x03str\x93.'), str)
+        self.assertIs(self.loads(b'\x8c\x04math\x8c\x03log\x93.'), math.log)
+        self.assertIs(self.loads(b'\x8c\x07os.path\x8c\x04join\x93.'),
+                      os.path.join)
+        self.assertIs(self.loads(b'\x80\x04\x8c\x08builtins\x8c\x09str.upper\x93.'),
+                      str.upper)
+        with support.swap_item(sys.modules, 'mödule', types.SimpleNamespace(glöbal=42)):
+            self.assertEqual(self.loads(b'\x80\x04\x8c\x07m\xc3\xb6dule\x8c\x07gl\xc3\xb6bal\x93.'), 42)
+
+        self.assertRaises(UnicodeDecodeError, self.loads, b'\x8c\x01\xff\x8c\x03log\x93.')
+        self.assertRaises(UnicodeDecodeError, self.loads, b'\x8c\x04math\x8c\x01\xff\x93.')
+        self.assertRaises(ValueError, self.loads, b'\x8c\x00\x8c\x03log\x93.')
+        self.assertRaises(AttributeError, self.loads, b'\x8c\x04math\x8c\x00\x93.')
+        self.assertRaises(AttributeError, self.loads, b'\x80\x04\x8c\x04math\x8c\x00\x93.')
+
+        self.assertRaises(pickle.UnpicklingError, self.loads, b'N\x8c\x03log\x93.')
+        self.assertRaises(pickle.UnpicklingError, self.loads, b'\x8c\x04mathN\x93.')
+        self.assertRaises(pickle.UnpicklingError, self.loads, b'\x80\x04\x8c\x04mathN\x93.')
+
+    def test_find_class(self):
+        unpickler = self.unpickler(io.BytesIO())
+        unpickler_nofix = self.unpickler(io.BytesIO(), fix_imports=False)
+        unpickler4 = self.unpickler(io.BytesIO(b'\x80\x04N.'))
+        unpickler4.load()
+
+        self.assertIs(unpickler.find_class('__builtin__', 'str'), str)
+        self.assertRaises(ModuleNotFoundError,
+                          unpickler_nofix.find_class, '__builtin__', 'str')
+        self.assertIs(unpickler.find_class('builtins', 'str'), str)
+        self.assertIs(unpickler_nofix.find_class('builtins', 'str'), str)
+        self.assertIs(unpickler.find_class('math', 'log'), math.log)
+        self.assertIs(unpickler.find_class('os.path', 'join'), os.path.join)
+        self.assertIs(unpickler.find_class('os.path', 'join'), os.path.join)
+
+        self.assertIs(unpickler4.find_class('builtins', 'str.upper'), str.upper)
+        with self.assertRaises(AttributeError):
+            unpickler.find_class('builtins', 'str.upper')
+
+        with self.assertRaises(AttributeError):
+            unpickler.find_class('math', 'spam')
+        with self.assertRaises(AttributeError):
+            unpickler4.find_class('math', 'spam')
+        with self.assertRaises(AttributeError):
+            unpickler.find_class('math', 'log.spam')
+        with self.assertRaises(AttributeError):
+            unpickler4.find_class('math', 'log.spam')
+        with self.assertRaises(AttributeError):
+            unpickler.find_class('math', 'log.<locals>.spam')
+        with self.assertRaises(AttributeError):
+            unpickler4.find_class('math', 'log.<locals>.spam')
+        with self.assertRaises(AttributeError):
+            unpickler.find_class('math', '')
+        with self.assertRaises(AttributeError):
+            unpickler4.find_class('math', '')
+        self.assertRaises(ModuleNotFoundError, unpickler.find_class, 'spam', 'log')
+        self.assertRaises(ValueError, unpickler.find_class, '', 'log')
+
+        self.assertRaises(TypeError, unpickler.find_class, None, 'log')
+        self.assertRaises(TypeError, unpickler.find_class, 'math', None)
+        self.assertRaises((TypeError, AttributeError), unpickler4.find_class, 'math', None)
+
+    def test_custom_find_class(self):
+        def loads(data):
+            class Unpickler(self.unpickler):
+                def find_class(self, module_name, global_name):
+                    return (module_name, global_name)
+            return Unpickler(io.BytesIO(data)).load()
+
+        self.assertEqual(loads(b'cmath\nlog\n.'), ('math', 'log'))
+        self.assertEqual(loads(b'\x8c\x04math\x8c\x03log\x93.'), ('math', 'log'))
+
+        def loads(data):
+            class Unpickler(self.unpickler):
+                @staticmethod
+                def find_class(module_name, global_name):
+                    return (module_name, global_name)
+            return Unpickler(io.BytesIO(data)).load()
+
+        self.assertEqual(loads(b'cmath\nlog\n.'), ('math', 'log'))
+        self.assertEqual(loads(b'\x8c\x04math\x8c\x03log\x93.'), ('math', 'log'))
+
+        def loads(data):
+            class Unpickler(self.unpickler):
+                @classmethod
+                def find_class(cls, module_name, global_name):
+                    return (module_name, global_name)
+            return Unpickler(io.BytesIO(data)).load()
+
+        self.assertEqual(loads(b'cmath\nlog\n.'), ('math', 'log'))
+        self.assertEqual(loads(b'\x8c\x04math\x8c\x03log\x93.'), ('math', 'log'))
+
+        def loads(data):
+            class Unpickler(self.unpickler):
+                pass
+            def find_class(module_name, global_name):
+                return (module_name, global_name)
+            unpickler = Unpickler(io.BytesIO(data))
+            unpickler.find_class = find_class
+            return unpickler.load()
+
+        self.assertEqual(loads(b'cmath\nlog\n.'), ('math', 'log'))
+        self.assertEqual(loads(b'\x8c\x04math\x8c\x03log\x93.'), ('math', 'log'))
+
+    def test_bad_ext_code(self):
+        # unregistered extension code
+        self.check_unpickling_error(ValueError, b'\x82\x01.')
+        self.check_unpickling_error(ValueError, b'\x82\xff.')
+        self.check_unpickling_error(ValueError, b'\x83\x01\x00.')
+        self.check_unpickling_error(ValueError, b'\x83\xff\xff.')
+        self.check_unpickling_error(ValueError, b'\x84\x01\x00\x00\x00.')
+        self.check_unpickling_error(ValueError, b'\x84\xff\xff\xff\x7f.')
+        # EXT specifies code <= 0
+        self.check_unpickling_error(pickle.UnpicklingError, b'\x82\x00.')
+        self.check_unpickling_error(pickle.UnpicklingError, b'\x83\x00\x00.')
+        self.check_unpickling_error(pickle.UnpicklingError, b'\x84\x00\x00\x00\x00.')
+        self.check_unpickling_error(pickle.UnpicklingError, b'\x84\x00\x00\x00\x80.')
+        self.check_unpickling_error(pickle.UnpicklingError, b'\x84\xff\xff\xff\xff.')
+
+    @support.cpython_only
+    def test_bad_ext_inverted_registry(self):
+        code = 1
+        def check(key, exc):
+            with support.swap_item(copyreg._inverted_registry, code, key):
+                with self.assertRaises(exc):
+                    self.loads(b'\x82\x01.')
+        check(None, ValueError)
+        check((), ValueError)
+        check((__name__,), (TypeError, ValueError))
+        check((__name__, "MyList", "x"), (TypeError, ValueError))
+        check((__name__, None), (TypeError, ValueError))
+        check((None, "MyList"), (TypeError, ValueError))
+
     def test_bad_reduce(self):
         self.assertEqual(self.loads(b'cbuiltins\nint\n)R.'), 0)
         self.check_unpickling_error(TypeError, b'N)R.')
@@ -1197,6 +1344,41 @@ def test_bad_newobj_ex(self):
         self.check_unpickling_error(error, b'cbuiltins\nint\nN}\x92.')
         self.check_unpickling_error(error, b'cbuiltins\nint\n)N\x92.')
 
+    def test_bad_state(self):
+        c = C()
+        c.x = None
+        base = b'c__main__\nC\n)\x81'
+        self.assertEqual(self.loads(base + b'}X\x01\x00\x00\x00xNsb.'), c)
+        self.assertEqual(self.loads(base + b'N}X\x01\x00\x00\x00xNs\x86b.'), c)
+        # non-hashable dict key
+        self.check_unpickling_error(TypeError, base + b'}]Nsb.')
+        # state = list
+        error = (pickle.UnpicklingError, AttributeError)
+        self.check_unpickling_error(error, base + b'](}}eb.')
+        # state = 1-tuple
+        self.check_unpickling_error(error, base + b'}\x85b.')
+        # state = 3-tuple
+        self.check_unpickling_error(error, base + b'}}}\x87b.')
+        # non-hashable slot name
+        self.check_unpickling_error(TypeError, base + b'}}]Ns\x86b.')
+        # non-string slot name
+        self.check_unpickling_error(TypeError, base + b'}}NNs\x86b.')
+        # dict = True
+        self.check_unpickling_error(error, base + b'\x88}\x86b.')
+        # slots dict = True
+        self.check_unpickling_error(error, base + b'}\x88\x86b.')
+
+        class BadKey1:
+            count = 1
+            def __hash__(self):
+                if not self.count:
+                    raise CustomError
+                self.count -= 1
+                return 42
+        __main__.BadKey1 = BadKey1
+        # bad hashable dict key
+        self.check_unpickling_error(CustomError, base + b'}c__main__\nBadKey1\n)\x81Nsb.')
+
     def test_bad_stack(self):
         badpickles = [
             b'.',                       # STOP
@@ -1443,6 +1625,496 @@ def t():
             [ToBeUnpickled] * 2)
 
 
+class AbstractPicklingErrorTests:
+    # Subclass must define self.dumps, self.pickler.
+
+    def test_bad_reduce_result(self):
+        obj = REX([print, ()])
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj = REX((print,))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj = REX((print, (), None, None, None, None, None))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_bad_reconstructor(self):
+        obj = REX((42, ()))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_reconstructor(self):
+        obj = REX((UnpickleableCallable(), ()))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_reconstructor_args(self):
+        obj = REX((print, []))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_reconstructor_args(self):
+        obj = REX((print, (1, 2, UNPICKLEABLE)))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_newobj_args(self):
+        obj = REX((copyreg.__newobj__, ()))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises((IndexError, pickle.PicklingError)) as cm:
+                    self.dumps(obj, proto)
+
+        obj = REX((copyreg.__newobj__, [REX]))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises((IndexError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+    def test_bad_newobj_class(self):
+        obj = REX((copyreg.__newobj__, (NoNew(),)))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_wrong_newobj_class(self):
+        obj = REX((copyreg.__newobj__, (str,)))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_newobj_class(self):
+        class LocalREX(REX): pass
+        obj = LocalREX((copyreg.__newobj__, (LocalREX,)))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((pickle.PicklingError, AttributeError)):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_newobj_args(self):
+        obj = REX((copyreg.__newobj__, (REX, 1, 2, UNPICKLEABLE)))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_newobj_ex_args(self):
+        obj = REX((copyreg.__newobj_ex__, ()))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises((ValueError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+        obj = REX((copyreg.__newobj_ex__, 42))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj = REX((copyreg.__newobj_ex__, (REX, 42, {})))
+        is_py = self.pickler is pickle._Pickler
+        for proto in protocols[2:4] if is_py else protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises((TypeError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+        obj = REX((copyreg.__newobj_ex__, (REX, (), [])))
+        for proto in protocols[2:4] if is_py else protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises((TypeError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+    def test_bad_newobj_ex__class(self):
+        obj = REX((copyreg.__newobj_ex__, (NoNew(), (), {})))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_wrong_newobj_ex_class(self):
+        if self.pickler is not pickle._Pickler:
+            self.skipTest('only verified in the Python implementation')
+        obj = REX((copyreg.__newobj_ex__, (str, (), {})))
+        for proto in protocols[2:]:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_newobj_ex_class(self):
+        class LocalREX(REX): pass
+        obj = LocalREX((copyreg.__newobj_ex__, (LocalREX, (), {})))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((pickle.PicklingError, AttributeError)):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_newobj_ex_args(self):
+        obj = REX((copyreg.__newobj_ex__, (REX, (1, 2, UNPICKLEABLE), {})))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_newobj_ex_kwargs(self):
+        obj = REX((copyreg.__newobj_ex__, (REX, (), {'a': UNPICKLEABLE})))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_state(self):
+        obj = REX_state(UNPICKLEABLE)
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_state_setter(self):
+        if self.pickler is pickle._Pickler:
+            self.skipTest('only verified in the C implementation')
+        obj = REX((print, (), 'state', None, None, 42))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_state_setter(self):
+        obj = REX((print, (), 'state', None, None, UnpickleableCallable()))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_state_with_state_setter(self):
+        obj = REX((print, (), UNPICKLEABLE, None, None, print))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_object_list_items(self):
+        # Issue4176: crash when 4th and 5th items of __reduce__()
+        # are not iterators
+        obj = REX((list, (), None, 42))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((TypeError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+        if self.pickler is not pickle._Pickler:
+            # Python implementation is less strict and also accepts iterables.
+            obj = REX((list, (), None, []))
+            for proto in protocols:
+                with self.subTest(proto=proto):
+                    with self.assertRaises((TypeError, pickle.PicklingError)):
+                        self.dumps(obj, proto)
+
+    def test_unpickleable_object_list_items(self):
+        obj = REX_six([1, 2, UNPICKLEABLE])
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_bad_object_dict_items(self):
+        # Issue4176: crash when 4th and 5th items of __reduce__()
+        # are not iterators
+        obj = REX((dict, (), None, None, 42))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((TypeError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+        for proto in protocols:
+            obj = REX((dict, (), None, None, iter([('a',)])))
+            with self.subTest(proto=proto):
+                with self.assertRaises((ValueError, TypeError)):
+                    self.dumps(obj, proto)
+
+        if self.pickler is not pickle._Pickler:
+            # Python implementation is less strict and also accepts iterables.
+            obj = REX((dict, (), None, None, []))
+            for proto in protocols:
+                with self.subTest(proto=proto):
+                    with self.assertRaises((TypeError, pickle.PicklingError)):
+                        self.dumps(obj, proto)
+
+    def test_unpickleable_object_dict_items(self):
+        obj = REX_seven({'a': UNPICKLEABLE})
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_list_items(self):
+        obj = [1, [2, 3, UNPICKLEABLE]]
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+        for n in [0, 1, 1000, 1005]:
+            obj = [*range(n), UNPICKLEABLE]
+            for proto in protocols:
+                with self.subTest(proto=proto):
+                    with self.assertRaises(CustomError):
+                        self.dumps(obj, proto)
+
+    def test_unpickleable_tuple_items(self):
+        obj = (1, (2, 3, UNPICKLEABLE))
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+        obj = (*range(10), UNPICKLEABLE)
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_dict_items(self):
+        obj = {'a': {'b': UNPICKLEABLE}}
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+        for n in [0, 1, 1000, 1005]:
+            obj = dict.fromkeys(range(n))
+            obj['a'] = UNPICKLEABLE
+            for proto in protocols:
+                with self.subTest(proto=proto, n=n):
+                    with self.assertRaises(CustomError):
+                        self.dumps(obj, proto)
+
+    def test_unpickleable_set_items(self):
+        obj = {UNPICKLEABLE}
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_unpickleable_frozenset_items(self):
+        obj = frozenset({frozenset({UNPICKLEABLE})})
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(CustomError):
+                    self.dumps(obj, proto)
+
+    def test_global_lookup_error(self):
+        # Global name does not exist
+        obj = REX('spam')
+        obj.__module__ = __name__
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj.__module__ = 'nonexisting'
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj.__module__ = ''
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((ValueError, pickle.PicklingError)):
+                    self.dumps(obj, proto)
+
+        obj.__module__ = None
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_nonencodable_global_name_error(self):
+        for proto in protocols[:4]:
+            with self.subTest(proto=proto):
+                name = 'nonascii\xff' if proto < 3 else 'nonencodable\udbff'
+                obj = REX(name)
+                obj.__module__ = __name__
+                with support.swap_item(globals(), name, obj):
+                    with self.assertRaises((UnicodeEncodeError, pickle.PicklingError)):
+                        self.dumps(obj, proto)
+
+    def test_nonencodable_module_name_error(self):
+        for proto in protocols[:4]:
+            with self.subTest(proto=proto):
+                name = 'nonascii\xff' if proto < 3 else 'nonencodable\udbff'
+                obj = REX('test')
+                obj.__module__ = name
+                mod = types.SimpleNamespace(test=obj)
+                with support.swap_item(sys.modules, name, mod):
+                    with self.assertRaises((UnicodeEncodeError, pickle.PicklingError)):
+                        self.dumps(obj, proto)
+
+    def test_nested_lookup_error(self):
+        # Nested name does not exist
+        obj = REX('AbstractPickleTests.spam')
+        obj.__module__ = __name__
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj.__module__ = None
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_wrong_object_lookup_error(self):
+        # Name is bound to different object
+        obj = REX('AbstractPickleTests')
+        obj.__module__ = __name__
+        AbstractPickleTests.ham = []
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+        obj.__module__ = None
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PicklingError):
+                    self.dumps(obj, proto)
+
+    def test_local_lookup_error(self):
+        # Test that whichmodule() errors out cleanly when looking up
+        # an assumed globally-reachable object fails.
+        def f():
+            pass
+        # Since the function is local, lookup will fail
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((AttributeError, pickle.PicklingError)):
+                    self.dumps(f, proto)
+        # Same without a __module__ attribute (exercises a different path
+        # in _pickle.c).
+        del f.__module__
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((AttributeError, pickle.PicklingError)):
+                    self.dumps(f, proto)
+        # Yet a different path.
+        f.__name__ = f.__qualname__
+        for proto in protocols:
+            with self.subTest(proto=proto):
+                with self.assertRaises((AttributeError, pickle.PicklingError)):
+                    self.dumps(f, proto)
+
+    def test_reduce_ex_None(self):
+        c = REX_None()
+        with self.assertRaises(TypeError):
+            self.dumps(c)
+
+    def test_reduce_None(self):
+        c = R_None()
+        with self.assertRaises(TypeError):
+            self.dumps(c)
+
+    @no_tracing
+    def test_bad_getattr(self):
+        # Issue #3514: crash when there is an infinite loop in __getattr__
+        x = BadGetattr()
+        for proto in range(2):
+            with support.infinite_recursion(25):
+                self.assertRaises(RuntimeError, self.dumps, x, proto)
+        for proto in range(2, pickle.HIGHEST_PROTOCOL + 1):
+            s = self.dumps(x, proto)
+
+    def test_picklebuffer_error(self):
+        # PickleBuffer forbidden with protocol < 5
+        pb = pickle.PickleBuffer(b"foobar")
+        for proto in range(0, 5):
+            with self.subTest(proto=proto):
+                with self.assertRaises(pickle.PickleError) as cm:
+                    self.dumps(pb, proto)
+                self.assertEqual(str(cm.exception),
+                    'PickleBuffer can only be pickled with protocol >= 5')
+
+    def test_non_continuous_buffer(self):
+        for proto in protocols[5:]:
+            with self.subTest(proto=proto):
+                pb = pickle.PickleBuffer(memoryview(b"foobar")[::2])
+                with self.assertRaises((pickle.PicklingError, BufferError)):
+                    self.dumps(pb, proto)
+
+    def test_buffer_callback_error(self):
+        def buffer_callback(buffers):
+            raise CustomError
+        pb = pickle.PickleBuffer(b"foobar")
+        with self.assertRaises(CustomError):
+            self.dumps(pb, 5, buffer_callback=buffer_callback)
+
+    def test_evil_pickler_mutating_collection(self):
+        # https://github.com/python/cpython/issues/92930
+        global Clearer
+        class Clearer:
+            pass
+
+        def check(collection):
+            class EvilPickler(self.pickler):
+                def persistent_id(self, obj):
+                    if isinstance(obj, Clearer):
+                        collection.clear()
+                    return None
+            pickler = EvilPickler(io.BytesIO(), proto)
+            try:
+                pickler.dump(collection)
+            except RuntimeError as e:
+                expected = "changed size during iteration"
+                self.assertIn(expected, str(e))
+
+        for proto in protocols:
+            check([Clearer()])
+            check([Clearer(), Clearer()])
+            check({Clearer()})
+            check({Clearer(), Clearer()})
+            check({Clearer(): 1})
+            check({Clearer(): 1, Clearer(): 2})
+            check({1: Clearer(), 2: Clearer()})
+
+    @support.cpython_only
+    def test_bad_ext_code(self):
+        # This should never happen in normal circumstances, because the type
+        # and the value of the extension code is checked in copyreg.add_extension().
+        key = (__name__, 'MyList')
+        def check(code, exc):
+            assert key not in copyreg._extension_registry
+            assert code not in copyreg._inverted_registry
+            with (support.swap_item(copyreg._extension_registry, key, code),
+                  support.swap_item(copyreg._inverted_registry, code, key)):
+                for proto in protocols[2:]:
+                    with self.assertRaises(exc):
+                        self.dumps(MyList, proto)
+
+        check(object(), TypeError)
+        check(None, TypeError)
+        check(-1, (RuntimeError, struct.error))
+        check(0, RuntimeError)
+        check(2**31, (RuntimeError, OverflowError, struct.error))
+        check(2**1000, (OverflowError, struct.error))
+        check(-2**1000, (OverflowError, struct.error))
+
 
 class AbstractPickleTests:
     # Subclass must define self.dumps, self.loads.
@@ -1845,6 +2517,25 @@ def test_bytes(self):
                 p = self.dumps(s, proto)
                 self.assert_is_copy(s, self.loads(p))
 
+    def test_bytes_memoization(self):
+        for proto in protocols:
+            for array_type in [bytes, ZeroCopyBytes]:
+                for s in b'', b'xyz', b'xyz'*100:
+                    with self.subTest(proto=proto, array_type=array_type, s=s, independent=False):
+                        b = array_type(s)
+                        p = self.dumps((b, b), proto)
+                        x, y = self.loads(p)
+                        self.assertIs(x, y)
+                        self.assert_is_copy((b, b), (x, y))
+
+                    with self.subTest(proto=proto, array_type=array_type, s=s, independent=True):
+                        b1, b2 = array_type(s), array_type(s)
+                        p = self.dumps((b1, b2), proto)
+                        # Note that (b1, b2) = self.loads(p) might have identical
+                        # components, i.e., b1 is b2, but this is not always the
+                        # case if the content is large (equality still holds).
+                        self.assert_is_copy((b1, b2), self.loads(p))
+
     def test_bytearray(self):
         for proto in protocols:
             for s in b'', b'xyz', b'xyz'*100:
@@ -1864,13 +2555,31 @@ def test_bytearray(self):
                     self.assertNotIn(b'bytearray', p)
                     self.assertTrue(opcode_in_pickle(pickle.BYTEARRAY8, p))
 
-    def test_bytearray_memoization_bug(self):
+    def test_bytearray_memoization(self):
         for proto in protocols:
-            for s in b'', b'xyz', b'xyz'*100:
-                b = bytearray(s)
-                p = self.dumps((b, b), proto)
-                b1, b2 = self.loads(p)
-                self.assertIs(b1, b2)
+            for array_type in [bytearray, ZeroCopyBytearray]:
+                for s in b'', b'xyz', b'xyz'*100:
+                    with self.subTest(proto=proto, array_type=array_type, s=s, independent=False):
+                        b = array_type(s)
+                        p = self.dumps((b, b), proto)
+                        b1, b2 = self.loads(p)
+                        self.assertIs(b1, b2)
+
+                    with self.subTest(proto=proto, array_type=array_type, s=s, independent=True):
+                        b1a, b2a = array_type(s), array_type(s)
+                        # Unlike bytes, equal but independent bytearray objects are
+                        # never identical.
+                        self.assertIsNot(b1a, b2a)
+
+                        p = self.dumps((b1a, b2a), proto)
+                        b1b, b2b = self.loads(p)
+                        self.assertIsNot(b1b, b2b)
+
+                        self.assertIsNot(b1a, b1b)
+                        self.assert_is_copy(b1a, b1b)
+
+                        self.assertIsNot(b2a, b2b)
+                        self.assert_is_copy(b2a, b2b)
 
     def test_ints(self):
         for proto in protocols:
@@ -1915,7 +2624,7 @@ def test_float(self):
                 got = self.loads(pickle)
                 self.assert_is_copy(value, got)
 
-    @run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
+    @run_with_locales('LC_ALL', 'de_DE', 'fr_FR', '')
     def test_float_format(self):
         # make sure that floats are formatted locale independent with proto 0
         self.assertEqual(self.dumps(1.2, 0)[0:3], b'F1.')
@@ -2416,55 +3125,12 @@ def test_reduce_calls_base(self):
             y = self.loads(s)
             self.assertEqual(y._reduce_called, 1)
 
-    def test_reduce_ex_None(self):
-        c = REX_None()
-        with self.assertRaises(TypeError):
-            self.dumps(c)
-
-    def test_reduce_None(self):
-        c = R_None()
-        with self.assertRaises(TypeError):
-            self.dumps(c)
-
     def test_pickle_setstate_None(self):
         c = C_None_setstate()
         p = self.dumps(c)
         with self.assertRaises(TypeError):
             self.loads(p)
 
-    @no_tracing
-    def test_bad_getattr(self):
-        # Issue #3514: crash when there is an infinite loop in __getattr__
-        x = BadGetattr()
-        for proto in range(2):
-            with support.infinite_recursion(25):
-                self.assertRaises(RuntimeError, self.dumps, x, proto)
-        for proto in range(2, pickle.HIGHEST_PROTOCOL + 1):
-            s = self.dumps(x, proto)
-
-    def test_reduce_bad_iterator(self):
-        # Issue4176: crash when 4th and 5th items of __reduce__()
-        # are not iterators
-        class C(object):
-            def __reduce__(self):
-                # 4th item is not an iterator
-                return list, (), None, [], None
-        class D(object):
-            def __reduce__(self):
-                # 5th item is not an iterator
-                return dict, (), None, None, []
-
-        # Python implementation is less strict and also accepts iterables.
-        for proto in protocols:
-            try:
-                self.dumps(C(), proto)
-            except pickle.PicklingError:
-                pass
-            try:
-                self.dumps(D(), proto)
-            except pickle.PicklingError:
-                pass
-
     def test_many_puts_and_gets(self):
         # Test that internal data structures correctly deal with lots of
         # puts/gets.
@@ -2781,6 +3447,18 @@ class Recursive:
                 self.assertIs(unpickled, Recursive)
         del Recursive.mod # break reference loop
 
+    def test_recursive_nested_names2(self):
+        global Recursive
+        class Recursive:
+            pass
+        Recursive.ref = Recursive
+        Recursive.__qualname__ = 'Recursive.ref'
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.subTest(proto=proto):
+                unpickled = self.loads(self.dumps(Recursive, proto))
+                self.assertIs(unpickled, Recursive)
+        del Recursive.ref # break reference loop
+
     def test_py_methods(self):
         global PyMethodsTest
         class PyMethodsTest:
@@ -2901,27 +3579,6 @@ def test_compat_pickle(self):
                     self.assertIn(('c%s\n%s' % (mod, name)).encode(), pickled)
                     self.assertIs(type(self.loads(pickled)), type(val))
 
-    def test_local_lookup_error(self):
-        # Test that whichmodule() errors out cleanly when looking up
-        # an assumed globally-reachable object fails.
-        def f():
-            pass
-        # Since the function is local, lookup will fail
-        for proto in range(0, pickle.HIGHEST_PROTOCOL + 1):
-            with self.assertRaises((AttributeError, pickle.PicklingError)):
-                pickletools.dis(self.dumps(f, proto))
-        # Same without a __module__ attribute (exercises a different path
-        # in _pickle.c).
-        del f.__module__
-        for proto in range(0, pickle.HIGHEST_PROTOCOL + 1):
-            with self.assertRaises((AttributeError, pickle.PicklingError)):
-                pickletools.dis(self.dumps(f, proto))
-        # Yet a different path.
-        f.__name__ = f.__qualname__
-        for proto in range(0, pickle.HIGHEST_PROTOCOL + 1):
-            with self.assertRaises((AttributeError, pickle.PicklingError)):
-                pickletools.dis(self.dumps(f, proto))
-
     #
     # PEP 574 tests below
     #
@@ -3032,20 +3689,6 @@ def test_oob_buffers_writable_to_readonly(self):
             self.assertIs(type(new), type(obj))
             self.assertEqual(new, obj)
 
-    def test_picklebuffer_error(self):
-        # PickleBuffer forbidden with protocol < 5
-        pb = pickle.PickleBuffer(b"foobar")
-        for proto in range(0, 5):
-            with self.assertRaises(pickle.PickleError):
-                self.dumps(pb, proto)
-
-    def test_buffer_callback_error(self):
-        def buffer_callback(buffers):
-            1/0
-        pb = pickle.PickleBuffer(b"foobar")
-        with self.assertRaises(ZeroDivisionError):
-            self.dumps(pb, 5, buffer_callback=buffer_callback)
-
     def test_buffers_error(self):
         pb = pickle.PickleBuffer(b"foobar")
         for proto in range(5, pickle.HIGHEST_PROTOCOL + 1):
@@ -3137,37 +3780,6 @@ def __reduce__(self):
                     expected = "changed size during iteration"
                     self.assertIn(expected, str(e))
 
-    def test_evil_pickler_mutating_collection(self):
-        # https://github.com/python/cpython/issues/92930
-        if not hasattr(self, "pickler"):
-            raise self.skipTest(f"{type(self)} has no associated pickler type")
-
-        global Clearer
-        class Clearer:
-            pass
-
-        def check(collection):
-            class EvilPickler(self.pickler):
-                def persistent_id(self, obj):
-                    if isinstance(obj, Clearer):
-                        collection.clear()
-                    return None
-            pickler = EvilPickler(io.BytesIO(), proto)
-            try:
-                pickler.dump(collection)
-            except RuntimeError as e:
-                expected = "changed size during iteration"
-                self.assertIn(expected, str(e))
-
-        for proto in protocols:
-            check([Clearer()])
-            check([Clearer(), Clearer()])
-            check({Clearer()})
-            check({Clearer(), Clearer()})
-            check({Clearer(): 1})
-            check({Clearer(): 1, Clearer(): 2})
-            check({1: Clearer(), 2: Clearer()})
-
 
 class BigmemPickleTests:
 
@@ -3298,6 +3910,18 @@ def test_huge_str_64b(self, size):
 
 # Test classes for reduce_ex
 
+class R:
+    def __init__(self, reduce=None):
+        self.reduce = reduce
+    def __reduce__(self, proto):
+        return self.reduce
+
+class REX:
+    def __init__(self, reduce_ex=None):
+        self.reduce_ex = reduce_ex
+    def __reduce_ex__(self, proto):
+        return self.reduce_ex
+
 class REX_one(object):
     """No __reduce_ex__ here, but inheriting it from object"""
     _reduce_called = 0
@@ -3388,6 +4012,19 @@ def __getstate__(self):
 
     __setstate__ = None
 
+class CustomError(Exception):
+    pass
+
+class Unpickleable:
+    def __reduce__(self):
+        raise CustomError
+
+UNPICKLEABLE = Unpickleable()
+
+class UnpickleableCallable(Unpickleable):
+    def __call__(self, *args, **kwargs):
+        pass
+
 
 # Test classes for newobj
 
@@ -3437,7 +4074,9 @@ class MyIntWithNew2(MyIntWithNew):
 class SlotList(MyList):
     __slots__ = ["foo"]
 
-class SimpleNewObj(int):
+# Ruff "redefined while unused" false positive here due to `global` variables
+# being assigned (and then restored) from within test methods earlier in the file
+class SimpleNewObj(int):  # noqa: F811
     def __init__(self, *args, **kwargs):
         # raise an error, to make sure this isn't called
         raise TypeError("SimpleNewObj.__init__() didn't expect to get called")
@@ -3456,6 +4095,12 @@ class BadGetattr:
     def __getattr__(self, key):
         self.foo
 
+class NoNew:
+    def __getattribute__(self, name):
+        if name == '__new__':
+            raise AttributeError
+        return super().__getattribute__(name)
+
 
 class AbstractPickleModuleTests:
 
@@ -3528,7 +4173,7 @@ def raises_oserror(self, *args, **kwargs):
             raise OSError
         @property
         def bad_property(self):
-            1/0
+            raise CustomError
 
         # File without read and readline
         class F:
@@ -3549,23 +4194,23 @@ class F:
         class F:
             read = bad_property
             readline = raises_oserror
-        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+        self.assertRaises(CustomError, self.Unpickler, F())
 
         # File with bad readline
         class F:
             readline = bad_property
             read = raises_oserror
-        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+        self.assertRaises(CustomError, self.Unpickler, F())
 
         # File with bad readline, no read
         class F:
             readline = bad_property
-        self.assertRaises(ZeroDivisionError, self.Unpickler, F())
+        self.assertRaises(CustomError, self.Unpickler, F())
 
         # File with bad read, no readline
         class F:
             read = bad_property
-        self.assertRaises((AttributeError, ZeroDivisionError), self.Unpickler, F())
+        self.assertRaises((AttributeError, CustomError), self.Unpickler, F())
 
         # File with bad peek
         class F:
@@ -3574,7 +4219,7 @@ class F:
             readline = raises_oserror
         try:
             self.Unpickler(F())
-        except ZeroDivisionError:
+        except CustomError:
             pass
 
         # File with bad readinto
@@ -3584,7 +4229,7 @@ class F:
             readline = raises_oserror
         try:
             self.Unpickler(F())
-        except ZeroDivisionError:
+        except CustomError:
             pass
 
     def test_pickler_bad_file(self):
@@ -3597,8 +4242,8 @@ class F:
         class F:
             @property
             def write(self):
-                1/0
-        self.assertRaises(ZeroDivisionError, self.Pickler, F())
+                raise CustomError
+        self.assertRaises(CustomError, self.Pickler, F())
 
     def check_dumps_loads_oob_buffers(self, dumps, loads):
         # No need to do the full gamut of tests here, just enough to
@@ -3706,9 +4351,15 @@ def test_return_correct_type(self):
 
     def test_protocol0_is_ascii_only(self):
         non_ascii_str = "\N{EMPTY SET}"
-        self.assertRaises(pickle.PicklingError, self.dumps, non_ascii_str, 0)
+        with self.assertRaises(pickle.PicklingError) as cm:
+            self.dumps(non_ascii_str, 0)
+        self.assertEqual(str(cm.exception),
+                         'persistent IDs in protocol 0 must be ASCII strings')
         pickled = pickle.PERSID + non_ascii_str.encode('utf-8') + b'\n.'
-        self.assertRaises(pickle.UnpicklingError, self.loads, pickled)
+        with self.assertRaises(pickle.UnpicklingError) as cm:
+            self.loads(pickled)
+        self.assertEqual(str(cm.exception),
+                         'persistent IDs in protocol 0 must be ASCII strings')
 
 
 class AbstractPicklerUnpicklerObjectTests:
diff --git a/Lib/test/pyclbr_input.py b/Lib/test/pyclbr_input.py
index 19ccd62dead8ee..5535edbfa7795b 100644
--- a/Lib/test/pyclbr_input.py
+++ b/Lib/test/pyclbr_input.py
@@ -12,17 +12,19 @@ class B (object):
     def bm(self): pass
 
 class C (B):
-    foo = Other().foo
-    om = Other.om
-
     d = 10
 
-    # XXX: This causes test_pyclbr.py to fail, but only because the
-    #      introspection-based is_method() code in the test can't
-    #      distinguish between this and a genuine method function like m().
-    #      The pyclbr.py module gets this right as it parses the text.
+    # This one is correctly considered by both test_pyclbr.py and pyclbr.py
+    # as a non-method of C.
+    foo = Other().foo
+
+    # This causes test_pyclbr.py to fail, but only because the
+    # introspection-based is_method() code in the test can't
+    # distinguish between this and a genuine method function like m().
     #
-    #f = f
+    # The pyclbr.py module gets this right as it parses the text.
+    om = Other.om
+    f = f
 
     def m(self): pass
 
@@ -31,3 +33,53 @@ def sm(self): pass
 
     @classmethod
     def cm(self): pass
+
+# Check that mangling is correctly handled
+
+class a:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
+
+class _:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
+
+class __:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
+
+class ___:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
+
+class _a:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
+
+class __a:
+    def a(self): pass
+    def _(self): pass
+    def _a(self): pass
+    def __(self): pass
+    def ___(self): pass
+    def __a(self): pass
diff --git a/Lib/test/pythoninfo.py b/Lib/test/pythoninfo.py
index 1db9fb9537f888..19b336ba96f20d 100644
--- a/Lib/test/pythoninfo.py
+++ b/Lib/test/pythoninfo.py
@@ -105,9 +105,13 @@ def collect_sys(info_add):
     )
     copy_attributes(info_add, sys, 'sys.%s', attributes)
 
-    call_func(info_add, 'sys.androidapilevel', sys, 'getandroidapilevel')
-    call_func(info_add, 'sys.windowsversion', sys, 'getwindowsversion')
-    call_func(info_add, 'sys.getrecursionlimit', sys, 'getrecursionlimit')
+    for func in (
+        '_is_gil_enabled',
+        'getandroidapilevel',
+        'getrecursionlimit',
+        'getwindowsversion',
+    ):
+        call_func(info_add, f'sys.{func}', sys, func)
 
     encoding = sys.getfilesystemencoding()
     if hasattr(sys, 'getfilesystemencodeerrors'):
@@ -330,6 +334,7 @@ def format_groups(groups):
         "_PYTHON_HOST_PLATFORM",
         "_PYTHON_PROJECT_BASE",
         "_PYTHON_SYSCONFIGDATA_NAME",
+        "_PYTHON_SYSCONFIGDATA_PATH",
         "__PYVENV_LAUNCHER__",
 
         # Sanitizer options
diff --git a/Lib/test/seq_tests.py b/Lib/test/seq_tests.py
index a41970d8f3f55a..719c9434a16820 100644
--- a/Lib/test/seq_tests.py
+++ b/Lib/test/seq_tests.py
@@ -426,6 +426,7 @@ def test_pickle(self):
             self.assertEqual(lst2, lst)
             self.assertNotEqual(id(lst2), id(lst))
 
+    @support.suppress_immortalization()
     def test_free_after_iterating(self):
         support.check_free_after_iterating(self, iter, self.type2test)
         support.check_free_after_iterating(self, reversed, self.type2test)
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index e2a854663ddb7d..d7fa6096d375c5 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -59,7 +59,10 @@
     "Py_DEBUG", "exceeds_recursion_limit", "get_c_recursion_limit",
     "skip_on_s390x",
     "without_optimizer",
-    "force_not_colorized"
+    "force_not_colorized",
+    "force_not_colorized_test_class",
+    "make_clean_env",
+    "BrokenIter",
     ]
 
 
@@ -251,22 +254,16 @@ class USEROBJECTFLAGS(ctypes.Structure):
         # process not running under the same user id as the current console
         # user.  To avoid that, raise an exception if the window manager
         # connection is not available.
-        from ctypes import cdll, c_int, pointer, Structure
-        from ctypes.util import find_library
-
-        app_services = cdll.LoadLibrary(find_library("ApplicationServices"))
-
-        if app_services.CGMainDisplayID() == 0:
-            reason = "gui tests cannot run without OS X window manager"
+        import subprocess
+        try:
+            rc = subprocess.run(["launchctl", "managername"],
+                                capture_output=True, check=True)
+            managername = rc.stdout.decode("utf-8").strip()
+        except subprocess.CalledProcessError:
+            reason = "unable to detect macOS launchd job manager"
         else:
-            class ProcessSerialNumber(Structure):
-                _fields_ = [("highLongOfPSN", c_int),
-                            ("lowLongOfPSN", c_int)]
-            psn = ProcessSerialNumber()
-            psn_p = pointer(psn)
-            if (  (app_services.GetCurrentProcess(psn_p) < 0) or
-                  (app_services.SetFrontProcess(psn_p) < 0) ):
-                reason = "cannot run without OS X gui process"
+            if managername != "Aqua":
+                reason = f"{managername=} -- can only run in a macOS GUI session"
 
     # check on every platform whether tkinter can actually do anything
     if not reason:
@@ -388,7 +385,7 @@ def skip_if_buildbot(reason=None):
         reason = 'not suitable for buildbots'
     try:
         isbuildbot = getpass.getuser().lower() == 'buildbot'
-    except (KeyError, EnvironmentError) as err:
+    except (KeyError, OSError) as err:
         warnings.warn(f'getpass.getuser() failed {err}.', RuntimeWarning)
         isbuildbot = False
     return unittest.skipIf(isbuildbot, reason)
@@ -529,11 +526,11 @@ def suppress_immortalization(suppress=True):
         yield
         return
 
-    old_values = _testinternalcapi.set_immortalize_deferred(False)
+    _testinternalcapi.suppress_immortalization(True)
     try:
         yield
     finally:
-        _testinternalcapi.set_immortalize_deferred(*old_values)
+        _testinternalcapi.suppress_immortalization(False)
 
 def skip_if_suppress_immortalization():
     try:
@@ -865,6 +862,15 @@ def check_cflags_pgo():
     return any(option in cflags_nodist for option in pgo_options)
 
 
+def check_bolt_optimized():
+    # Always return false, if the platform is WASI,
+    # because BOLT optimization does not support WASM binary.
+    if is_wasi:
+        return False
+    config_args = sysconfig.get_config_var('CONFIG_ARGS') or ''
+    return '--enable-bolt' in config_args
+
+
 Py_GIL_DISABLED = bool(sysconfig.get_config_var('Py_GIL_DISABLED'))
 
 def requires_gil_enabled(msg="needs the GIL enabled"):
@@ -911,8 +917,8 @@ def check_sizeof(test, o, size):
     test.assertEqual(result, size, msg)
 
 #=======================================================================
-# Decorator for running a function in a different locale, correctly resetting
-# it afterwards.
+# Decorator/context manager for running a code in a different locale,
+# correctly resetting it afterwards.
 
 @contextlib.contextmanager
 def run_with_locale(catstr, *locales):
@@ -923,16 +929,21 @@ def run_with_locale(catstr, *locales):
     except AttributeError:
         # if the test author gives us an invalid category string
         raise
-    except:
+    except Exception:
         # cannot retrieve original locale, so do nothing
         locale = orig_locale = None
+        if '' not in locales:
+            raise unittest.SkipTest('no locales')
     else:
         for loc in locales:
             try:
                 locale.setlocale(category, loc)
                 break
-            except:
+            except locale.Error:
                 pass
+        else:
+            if '' not in locales:
+                raise unittest.SkipTest(f'no locales {locales}')
 
     try:
         yield
@@ -940,6 +951,46 @@ def run_with_locale(catstr, *locales):
         if locale and orig_locale:
             locale.setlocale(category, orig_locale)
 
+#=======================================================================
+# Decorator for running a function in multiple locales (if they are
+# availasble) and resetting the original locale afterwards.
+
+def run_with_locales(catstr, *locales):
+    def deco(func):
+        @functools.wraps(func)
+        def wrapper(self, /, *args, **kwargs):
+            dry_run = '' in locales
+            try:
+                import locale
+                category = getattr(locale, catstr)
+                orig_locale = locale.setlocale(category)
+            except AttributeError:
+                # if the test author gives us an invalid category string
+                raise
+            except Exception:
+                # cannot retrieve original locale, so do nothing
+                pass
+            else:
+                try:
+                    for loc in locales:
+                        with self.subTest(locale=loc):
+                            try:
+                                locale.setlocale(category, loc)
+                            except locale.Error:
+                                self.skipTest(f'no locale {loc!r}')
+                            else:
+                                dry_run = False
+                                func(self, *args, **kwargs)
+                finally:
+                    locale.setlocale(category, orig_locale)
+            if dry_run:
+                # no locales available, so just run the test
+                # with the current locale
+                with self.subTest(locale=None):
+                    func(self, *args, **kwargs)
+        return wrapper
+    return deco
+
 #=======================================================================
 # Decorator for running a function in a specific timezone, correctly
 # resetting it afterwards.
@@ -1788,7 +1839,7 @@ def run_in_subinterp_with_config(code, *, own_gil=None, **config):
             config['gil'] = 'shared'
         elif gil == 2:
             config['gil'] = 'own'
-        else:
+        elif not isinstance(gil, str):
             raise NotImplementedError(gil)
     config = types.SimpleNamespace(**config)
     return _testinternalcapi.run_in_subinterp_with_config(code, config)
@@ -2539,9 +2590,9 @@ def exceeds_recursion_limit():
     return get_c_recursion_limit() * 3
 
 
-#Windows doesn't have os.uname() but it doesn't support s390x.
-skip_on_s390x = unittest.skipIf(hasattr(os, 'uname') and os.uname().machine == 's390x',
-                                'skipped on s390x')
+# Windows doesn't have os.uname() but it doesn't support s390x.
+is_s390x = hasattr(os, 'uname') and os.uname().machine == 's390x'
+skip_on_s390x = unittest.skipIf(is_s390x, 'skipped on s390x')
 
 Py_TRACE_REFS = hasattr(sys, 'getobjects')
 
@@ -2589,21 +2640,127 @@ def copy_python_src_ignore(path, names):
     return ignored
 
 
+def iter_builtin_types():
+    for obj in __builtins__.values():
+        if not isinstance(obj, type):
+            continue
+        cls = obj
+        if cls.__module__ != 'builtins':
+            continue
+        yield cls
+
+
+def iter_slot_wrappers(cls):
+    assert cls.__module__ == 'builtins', cls
+
+    def is_slot_wrapper(name, value):
+        if not isinstance(value, types.WrapperDescriptorType):
+            assert not repr(value).startswith('<slot wrapper '), (cls, name, value)
+            return False
+        assert repr(value).startswith('<slot wrapper '), (cls, name, value)
+        assert callable(value), (cls, name, value)
+        assert name.startswith('__') and name.endswith('__'), (cls, name, value)
+        return True
+
+    ns = vars(cls)
+    unused = set(ns)
+    for name in dir(cls):
+        if name in ns:
+            unused.remove(name)
+
+        try:
+            value = getattr(cls, name)
+        except AttributeError:
+            # It's as though it weren't in __dir__.
+            assert name in ('__annotate__', '__annotations__', '__abstractmethods__'), (cls, name)
+            if name in ns and is_slot_wrapper(name, ns[name]):
+                unused.add(name)
+            continue
+
+        if not name.startswith('__') or not name.endswith('__'):
+            assert not is_slot_wrapper(name, value), (cls, name, value)
+        if not is_slot_wrapper(name, value):
+            if name in ns:
+                assert not is_slot_wrapper(name, ns[name]), (cls, name, value, ns[name])
+        else:
+            if name in ns:
+                assert ns[name] is value, (cls, name, value, ns[name])
+                yield name, True
+            else:
+                yield name, False
+
+    for name in unused:
+        value = ns[name]
+        if is_slot_wrapper(cls, name, value):
+            yield name, True
+
+
+@contextlib.contextmanager
+def no_color():
+    import _colorize
+    from .os_helper import EnvironmentVarGuard
+
+    with (
+        swap_attr(_colorize, "can_colorize", lambda file=None: False),
+        EnvironmentVarGuard() as env,
+    ):
+        for var in {"FORCE_COLOR", "NO_COLOR", "PYTHON_COLORS"}:
+            env.unset(var)
+        env.set("NO_COLOR", "1")
+        yield
+
+
 def force_not_colorized(func):
     """Force the terminal not to be colorized."""
     @functools.wraps(func)
     def wrapper(*args, **kwargs):
-        import _colorize
-        original_fn = _colorize.can_colorize
-        variables = {"PYTHON_COLORS": None, "FORCE_COLOR": None}
-        try:
-            for key in variables:
-                variables[key] = os.environ.pop(key, None)
-            _colorize.can_colorize = lambda: False
+        with no_color():
             return func(*args, **kwargs)
-        finally:
-            _colorize.can_colorize = original_fn
-            for key, value in variables.items():
-                if value is not None:
-                    os.environ[key] = value
     return wrapper
+
+
+def force_not_colorized_test_class(cls):
+    """Force the terminal not to be colorized for the entire test class."""
+    original_setUpClass = cls.setUpClass
+
+    @classmethod
+    @functools.wraps(cls.setUpClass)
+    def new_setUpClass(cls):
+        cls.enterClassContext(no_color())
+        original_setUpClass()
+
+    cls.setUpClass = new_setUpClass
+    return cls
+
+
+def make_clean_env() -> dict[str, str]:
+    clean_env = os.environ.copy()
+    for k in clean_env.copy():
+        if k.startswith("PYTHON"):
+            clean_env.pop(k)
+    clean_env.pop("FORCE_COLOR", None)
+    clean_env.pop("NO_COLOR", None)
+    return clean_env
+
+
+def initialized_with_pyrepl():
+    """Detect whether PyREPL was used during Python initialization."""
+    # If the main module has a __file__ attribute it's a Python module, which means PyREPL.
+    return hasattr(sys.modules["__main__"], "__file__")
+
+
+class BrokenIter:
+    def __init__(self, init_raises=False, next_raises=False, iter_raises=False):
+        if init_raises:
+            1/0
+        self.next_raises = next_raises
+        self.iter_raises = iter_raises
+
+    def __next__(self):
+        if self.next_raises:
+            1/0
+
+    def __iter__(self):
+        if self.iter_raises:
+            1/0
+        return self
diff --git a/Lib/test/support/i18n_helper.py b/Lib/test/support/i18n_helper.py
new file mode 100644
index 00000000000000..2e304f29e8ba7f
--- /dev/null
+++ b/Lib/test/support/i18n_helper.py
@@ -0,0 +1,63 @@
+import re
+import subprocess
+import sys
+import unittest
+from pathlib import Path
+from test.support import REPO_ROOT, TEST_HOME_DIR, requires_subprocess
+from test.test_tools import skip_if_missing
+
+
+pygettext = Path(REPO_ROOT) / 'Tools' / 'i18n' / 'pygettext.py'
+
+msgid_pattern = re.compile(r'msgid(.*?)(?:msgid_plural|msgctxt|msgstr)',
+                           re.DOTALL)
+msgid_string_pattern = re.compile(r'"((?:\\"|[^"])*)"')
+
+
+def _generate_po_file(path, *, stdout_only=True):
+    res = subprocess.run([sys.executable, pygettext,
+                          '--no-location', '-o', '-', path],
+                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                         text=True)
+    if stdout_only:
+        return res.stdout
+    return res
+
+
+def _extract_msgids(po):
+    msgids = []
+    for msgid in msgid_pattern.findall(po):
+        msgid_string = ''.join(msgid_string_pattern.findall(msgid))
+        msgid_string = msgid_string.replace(r'\"', '"')
+        if msgid_string:
+            msgids.append(msgid_string)
+    return sorted(msgids)
+
+
+def _get_snapshot_path(module_name):
+    return Path(TEST_HOME_DIR) / 'translationdata' / module_name / 'msgids.txt'
+
+
+@requires_subprocess()
+class TestTranslationsBase(unittest.TestCase):
+
+    def assertMsgidsEqual(self, module):
+        '''Assert that msgids extracted from a given module match a
+        snapshot.
+
+        '''
+        skip_if_missing('i18n')
+        res = _generate_po_file(module.__file__, stdout_only=False)
+        self.assertEqual(res.returncode, 0)
+        self.assertEqual(res.stderr, '')
+        msgids = _extract_msgids(res.stdout)
+        snapshot_path = _get_snapshot_path(module.__name__)
+        snapshot = snapshot_path.read_text().splitlines()
+        self.assertListEqual(msgids, snapshot)
+
+
+def update_translation_snapshots(module):
+    contents = _generate_po_file(module.__file__)
+    msgids = _extract_msgids(contents)
+    snapshot_path = _get_snapshot_path(module.__name__)
+    snapshot_path.write_text('\n'.join(msgids))
diff --git a/Lib/test/support/import_helper.py b/Lib/test/support/import_helper.py
index edcd2b9a35bbd9..2b91bdcf9cd859 100644
--- a/Lib/test/support/import_helper.py
+++ b/Lib/test/support/import_helper.py
@@ -58,8 +58,8 @@ def make_legacy_pyc(source):
     :return: The file system path to the legacy pyc file.
     """
     pyc_file = importlib.util.cache_from_source(source)
-    up_one = os.path.dirname(os.path.abspath(source))
-    legacy_pyc = os.path.join(up_one, source + 'c')
+    assert source.endswith('.py')
+    legacy_pyc = source + 'c'
     shutil.move(pyc_file, legacy_pyc)
     return legacy_pyc
 
diff --git a/Lib/test/support/interpreters/_crossinterp.py b/Lib/test/support/interpreters/_crossinterp.py
new file mode 100644
index 00000000000000..544e197ba4c028
--- /dev/null
+++ b/Lib/test/support/interpreters/_crossinterp.py
@@ -0,0 +1,102 @@
+"""Common code between queues and channels."""
+
+
+class ItemInterpreterDestroyed(Exception):
+    """Raised when trying to get an item whose interpreter was destroyed."""
+
+
+class classonly:
+    """A non-data descriptor that makes a value only visible on the class.
+
+    This is like the "classmethod" builtin, but does not show up on
+    instances of the class.  It may be used as a decorator.
+    """
+
+    def __init__(self, value):
+        self.value = value
+        self.getter = classmethod(value).__get__
+        self.name = None
+
+    def __set_name__(self, cls, name):
+        if self.name is not None:
+            raise TypeError('already used')
+        self.name = name
+
+    def __get__(self, obj, cls):
+        if obj is not None:
+            raise AttributeError(self.name)
+        # called on the class
+        return self.getter(None, cls)
+
+
+class UnboundItem:
+    """Represents a cross-interpreter item no longer bound to an interpreter.
+
+    An item is unbound when the interpreter that added it to the
+    cross-interpreter container is destroyed.
+    """
+
+    __slots__ = ()
+
+    @classonly
+    def singleton(cls, kind, module, name='UNBOUND'):
+        doc = cls.__doc__.replace('cross-interpreter container', kind)
+        doc = doc.replace('cross-interpreter', kind)
+        subclass = type(
+            f'Unbound{kind.capitalize()}Item',
+            (cls,),
+            dict(
+                _MODULE=module,
+                _NAME=name,
+                __doc__=doc,
+            ),
+        )
+        return object.__new__(subclass)
+
+    _MODULE = __name__
+    _NAME = 'UNBOUND'
+
+    def __new__(cls):
+        raise Exception(f'use {cls._MODULE}.{cls._NAME}')
+
+    def __repr__(self):
+        return f'{self._MODULE}.{self._NAME}'
+#        return f'interpreters.queues.UNBOUND'
+
+
+UNBOUND = object.__new__(UnboundItem)
+UNBOUND_ERROR = object()
+UNBOUND_REMOVE = object()
+
+_UNBOUND_CONSTANT_TO_FLAG = {
+    UNBOUND_REMOVE: 1,
+    UNBOUND_ERROR: 2,
+    UNBOUND: 3,
+}
+_UNBOUND_FLAG_TO_CONSTANT = {v: k
+                             for k, v in _UNBOUND_CONSTANT_TO_FLAG.items()}
+
+
+def serialize_unbound(unbound):
+    op = unbound
+    try:
+        flag = _UNBOUND_CONSTANT_TO_FLAG[op]
+    except KeyError:
+        raise NotImplementedError(f'unsupported unbound replacement op {op!r}')
+    return flag,
+
+
+def resolve_unbound(flag, exctype_destroyed):
+    try:
+        op = _UNBOUND_FLAG_TO_CONSTANT[flag]
+    except KeyError:
+        raise NotImplementedError(f'unsupported unbound replacement op {flag!r}')
+    if op is UNBOUND_REMOVE:
+        # "remove" not possible here
+        raise NotImplementedError
+    elif op is UNBOUND_ERROR:
+        raise exctype_destroyed("item's original interpreter destroyed")
+    elif op is UNBOUND:
+        return UNBOUND
+    else:
+        raise NotImplementedError(repr(op))
diff --git a/Lib/test/support/interpreters/channels.py b/Lib/test/support/interpreters/channels.py
index fbae7e634cf34d..d2bd93d77f7169 100644
--- a/Lib/test/support/interpreters/channels.py
+++ b/Lib/test/support/interpreters/channels.py
@@ -2,35 +2,68 @@
 
 import time
 import _interpchannels as _channels
+from . import _crossinterp
 
 # aliases:
 from _interpchannels import (
     ChannelError, ChannelNotFoundError, ChannelClosedError,
     ChannelEmptyError, ChannelNotEmptyError,
 )
+from ._crossinterp import (
+    UNBOUND_ERROR, UNBOUND_REMOVE,
+)
 
 
 __all__ = [
+    'UNBOUND', 'UNBOUND_ERROR', 'UNBOUND_REMOVE',
     'create', 'list_all',
     'SendChannel', 'RecvChannel',
     'ChannelError', 'ChannelNotFoundError', 'ChannelEmptyError',
+    'ItemInterpreterDestroyed',
 ]
 
 
-def create():
+class ItemInterpreterDestroyed(ChannelError,
+                               _crossinterp.ItemInterpreterDestroyed):
+    """Raised from get() and get_nowait()."""
+
+
+UNBOUND = _crossinterp.UnboundItem.singleton('queue', __name__)
+
+
+def _serialize_unbound(unbound):
+    if unbound is UNBOUND:
+        unbound = _crossinterp.UNBOUND
+    return _crossinterp.serialize_unbound(unbound)
+
+
+def _resolve_unbound(flag):
+    resolved = _crossinterp.resolve_unbound(flag, ItemInterpreterDestroyed)
+    if resolved is _crossinterp.UNBOUND:
+        resolved = UNBOUND
+    return resolved
+
+
+def create(*, unbounditems=UNBOUND):
     """Return (recv, send) for a new cross-interpreter channel.
 
     The channel may be used to pass data safely between interpreters.
+
+    "unbounditems" sets the default for the send end of the channel.
+    See SendChannel.send() for supported values.  The default value
+    is UNBOUND, which replaces the unbound item when received.
     """
-    cid = _channels.create()
-    recv, send = RecvChannel(cid), SendChannel(cid)
+    unbound = _serialize_unbound(unbounditems)
+    unboundop, = unbound
+    cid = _channels.create(unboundop)
+    recv, send = RecvChannel(cid), SendChannel(cid, _unbound=unbound)
     return recv, send
 
 
 def list_all():
     """Return a list of (recv, send) for all open channels."""
-    return [(RecvChannel(cid), SendChannel(cid))
-            for cid in _channels.list_all()]
+    return [(RecvChannel(cid), SendChannel(cid, _unbound=unbound))
+            for cid, unbound in _channels.list_all()]
 
 
 class _ChannelEnd:
@@ -106,12 +139,15 @@ def recv(self, timeout=None, *,
             if timeout < 0:
                 raise ValueError(f'timeout value must be non-negative')
             end = time.time() + timeout
-        obj = _channels.recv(self._id, _sentinel)
+        obj, unboundop = _channels.recv(self._id, _sentinel)
         while obj is _sentinel:
             time.sleep(_delay)
             if timeout is not None and time.time() >= end:
                 raise TimeoutError
-            obj = _channels.recv(self._id, _sentinel)
+            obj, unboundop = _channels.recv(self._id, _sentinel)
+        if unboundop is not None:
+            assert obj is None, repr(obj)
+            return _resolve_unbound(unboundop)
         return obj
 
     def recv_nowait(self, default=_NOT_SET):
@@ -122,9 +158,13 @@ def recv_nowait(self, default=_NOT_SET):
         is the same as recv().
         """
         if default is _NOT_SET:
-            return _channels.recv(self._id)
+            obj, unboundop = _channels.recv(self._id)
         else:
-            return _channels.recv(self._id, default)
+            obj, unboundop = _channels.recv(self._id, default)
+        if unboundop is not None:
+            assert obj is None, repr(obj)
+            return _resolve_unbound(unboundop)
+        return obj
 
     def close(self):
         _channels.close(self._id, recv=True)
@@ -135,43 +175,79 @@ class SendChannel(_ChannelEnd):
 
     _end = 'send'
 
+    def __new__(cls, cid, *, _unbound=None):
+        if _unbound is None:
+            try:
+                op = _channels.get_channel_defaults(cid)
+                _unbound = (op,)
+            except ChannelNotFoundError:
+                _unbound = _serialize_unbound(UNBOUND)
+        self = super().__new__(cls, cid)
+        self._unbound = _unbound
+        return self
+
     @property
     def is_closed(self):
         info = self._info
         return info.closed or info.closing
 
-    def send(self, obj, timeout=None):
+    def send(self, obj, timeout=None, *,
+             unbound=None,
+             ):
         """Send the object (i.e. its data) to the channel's receiving end.
 
         This blocks until the object is received.
         """
-        _channels.send(self._id, obj, timeout=timeout, blocking=True)
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
+        _channels.send(self._id, obj, unboundop, timeout=timeout, blocking=True)
 
-    def send_nowait(self, obj):
+    def send_nowait(self, obj, *,
+                    unbound=None,
+                    ):
         """Send the object to the channel's receiving end.
 
         If the object is immediately received then return True
         (else False).  Otherwise this is the same as send().
         """
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
         # XXX Note that at the moment channel_send() only ever returns
         # None.  This should be fixed when channel_send_wait() is added.
         # See bpo-32604 and gh-19829.
-        return _channels.send(self._id, obj, blocking=False)
+        return _channels.send(self._id, obj, unboundop, blocking=False)
 
-    def send_buffer(self, obj, timeout=None):
+    def send_buffer(self, obj, timeout=None, *,
+                    unbound=None,
+                    ):
         """Send the object's buffer to the channel's receiving end.
 
         This blocks until the object is received.
         """
-        _channels.send_buffer(self._id, obj, timeout=timeout, blocking=True)
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
+        _channels.send_buffer(self._id, obj, unboundop,
+                              timeout=timeout, blocking=True)
 
-    def send_buffer_nowait(self, obj):
+    def send_buffer_nowait(self, obj, *,
+                           unbound=None,
+                           ):
         """Send the object's buffer to the channel's receiving end.
 
         If the object is immediately received then return True
         (else False).  Otherwise this is the same as send().
         """
-        return _channels.send_buffer(self._id, obj, blocking=False)
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
+        return _channels.send_buffer(self._id, obj, unboundop, blocking=False)
 
     def close(self):
         _channels.close(self._id, send=True)
diff --git a/Lib/test/support/interpreters/queues.py b/Lib/test/support/interpreters/queues.py
index 1b9e7481f2e313..deb8e8613af731 100644
--- a/Lib/test/support/interpreters/queues.py
+++ b/Lib/test/support/interpreters/queues.py
@@ -5,16 +5,22 @@
 import time
 import weakref
 import _interpqueues as _queues
+from . import _crossinterp
 
 # aliases:
 from _interpqueues import (
     QueueError, QueueNotFoundError,
 )
+from ._crossinterp import (
+    UNBOUND_ERROR, UNBOUND_REMOVE,
+)
 
 __all__ = [
+    'UNBOUND', 'UNBOUND_ERROR', 'UNBOUND_REMOVE',
     'create', 'list_all',
     'Queue',
     'QueueError', 'QueueNotFoundError', 'QueueEmpty', 'QueueFull',
+    'ItemInterpreterDestroyed',
 ]
 
 
@@ -32,26 +38,54 @@ class QueueFull(QueueError, queue.Full):
     """
 
 
+class ItemInterpreterDestroyed(QueueError,
+                               _crossinterp.ItemInterpreterDestroyed):
+    """Raised from get() and get_nowait()."""
+
+
 _SHARED_ONLY = 0
 _PICKLED = 1
 
-def create(maxsize=0, *, syncobj=False):
+
+UNBOUND = _crossinterp.UnboundItem.singleton('queue', __name__)
+
+
+def _serialize_unbound(unbound):
+    if unbound is UNBOUND:
+        unbound = _crossinterp.UNBOUND
+    return _crossinterp.serialize_unbound(unbound)
+
+
+def _resolve_unbound(flag):
+    resolved = _crossinterp.resolve_unbound(flag, ItemInterpreterDestroyed)
+    if resolved is _crossinterp.UNBOUND:
+        resolved = UNBOUND
+    return resolved
+
+
+def create(maxsize=0, *, syncobj=False, unbounditems=UNBOUND):
     """Return a new cross-interpreter queue.
 
     The queue may be used to pass data safely between interpreters.
 
     "syncobj" sets the default for Queue.put()
     and Queue.put_nowait().
+
+    "unbounditems" likewise sets the default.  See Queue.put() for
+    supported values.  The default value is UNBOUND, which replaces
+    the unbound item.
     """
     fmt = _SHARED_ONLY if syncobj else _PICKLED
-    qid = _queues.create(maxsize, fmt)
-    return Queue(qid, _fmt=fmt)
+    unbound = _serialize_unbound(unbounditems)
+    unboundop, = unbound
+    qid = _queues.create(maxsize, fmt, unboundop)
+    return Queue(qid, _fmt=fmt, _unbound=unbound)
 
 
 def list_all():
     """Return a list of all open queues."""
-    return [Queue(qid, _fmt=fmt)
-            for qid, fmt in _queues.list_all()]
+    return [Queue(qid, _fmt=fmt, _unbound=(unboundop,))
+            for qid, fmt, unboundop in _queues.list_all()]
 
 
 _known_queues = weakref.WeakValueDictionary()
@@ -59,20 +93,28 @@ def list_all():
 class Queue:
     """A cross-interpreter queue."""
 
-    def __new__(cls, id, /, *, _fmt=None):
+    def __new__(cls, id, /, *, _fmt=None, _unbound=None):
         # There is only one instance for any given ID.
         if isinstance(id, int):
             id = int(id)
         else:
             raise TypeError(f'id must be an int, got {id!r}')
         if _fmt is None:
-            _fmt, = _queues.get_queue_defaults(id)
+            if _unbound is None:
+                _fmt, op = _queues.get_queue_defaults(id)
+                _unbound = (op,)
+            else:
+                _fmt, _ = _queues.get_queue_defaults(id)
+        elif _unbound is None:
+            _, op = _queues.get_queue_defaults(id)
+            _unbound = (op,)
         try:
             self = _known_queues[id]
         except KeyError:
             self = super().__new__(cls)
             self._id = id
             self._fmt = _fmt
+            self._unbound = _unbound
             _known_queues[id] = self
             _queues.bind(id)
         return self
@@ -124,6 +166,7 @@ def qsize(self):
 
     def put(self, obj, timeout=None, *,
             syncobj=None,
+            unbound=None,
             _delay=10 / 1000,  # 10 milliseconds
             ):
         """Add the object to the queue.
@@ -131,7 +174,7 @@ def put(self, obj, timeout=None, *,
         This blocks while the queue is full.
 
         If "syncobj" is None (the default) then it uses the
-        queue's default, set with create_queue()..
+        queue's default, set with create_queue().
 
         If "syncobj" is false then all objects are supported,
         at the expense of worse performance.
@@ -152,11 +195,37 @@ def put(self, obj, timeout=None, *,
         actually is.  That's a slightly different and stronger promise
         than just (initial) equality, which is all "syncobj=False"
         can promise.
+
+        "unbound" controls the behavior of Queue.get() for the given
+        object if the current interpreter (calling put()) is later
+        destroyed.
+
+        If "unbound" is None (the default) then it uses the
+        queue's default, set with create_queue(),
+        which is usually UNBOUND.
+
+        If "unbound" is UNBOUND_ERROR then get() will raise an
+        ItemInterpreterDestroyed exception if the original interpreter
+        has been destroyed.  This does not otherwise affect the queue;
+        the next call to put() will work like normal, returning the next
+        item in the queue.
+
+        If "unbound" is UNBOUND_REMOVE then the item will be removed
+        from the queue as soon as the original interpreter is destroyed.
+        Be aware that this will introduce an imbalance between put()
+        and get() calls.
+
+        If "unbound" is UNBOUND then it is returned by get() in place
+        of the unbound item.
         """
         if syncobj is None:
             fmt = self._fmt
         else:
             fmt = _SHARED_ONLY if syncobj else _PICKLED
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
         if timeout is not None:
             timeout = int(timeout)
             if timeout < 0:
@@ -166,7 +235,7 @@ def put(self, obj, timeout=None, *,
             obj = pickle.dumps(obj)
         while True:
             try:
-                _queues.put(self._id, obj, fmt)
+                _queues.put(self._id, obj, fmt, unboundop)
             except QueueFull as exc:
                 if timeout is not None and time.time() >= end:
                     raise  # re-raise
@@ -174,14 +243,18 @@ def put(self, obj, timeout=None, *,
             else:
                 break
 
-    def put_nowait(self, obj, *, syncobj=None):
+    def put_nowait(self, obj, *, syncobj=None, unbound=None):
         if syncobj is None:
             fmt = self._fmt
         else:
             fmt = _SHARED_ONLY if syncobj else _PICKLED
+        if unbound is None:
+            unboundop, = self._unbound
+        else:
+            unboundop, = _serialize_unbound(unbound)
         if fmt is _PICKLED:
             obj = pickle.dumps(obj)
-        _queues.put(self._id, obj, fmt)
+        _queues.put(self._id, obj, fmt, unboundop)
 
     def get(self, timeout=None, *,
             _delay=10 / 1000,  # 10 milliseconds
@@ -189,6 +262,10 @@ def get(self, timeout=None, *,
         """Return the next object from the queue.
 
         This blocks while the queue is empty.
+
+        If the next item's original interpreter has been destroyed
+        then the "next object" is determined by the value of the
+        "unbound" argument to put().
         """
         if timeout is not None:
             timeout = int(timeout)
@@ -197,13 +274,16 @@ def get(self, timeout=None, *,
             end = time.time() + timeout
         while True:
             try:
-                obj, fmt = _queues.get(self._id)
+                obj, fmt, unboundop = _queues.get(self._id)
             except QueueEmpty as exc:
                 if timeout is not None and time.time() >= end:
                     raise  # re-raise
                 time.sleep(_delay)
             else:
                 break
+        if unboundop is not None:
+            assert obj is None, repr(obj)
+            return _resolve_unbound(unboundop)
         if fmt == _PICKLED:
             obj = pickle.loads(obj)
         else:
@@ -217,9 +297,12 @@ def get_nowait(self):
         is the same as get().
         """
         try:
-            obj, fmt = _queues.get(self._id)
+            obj, fmt, unboundop = _queues.get(self._id)
         except QueueEmpty as exc:
             raise  # re-raise
+        if unboundop is not None:
+            assert obj is None, repr(obj)
+            return _resolve_unbound(unboundop)
         if fmt == _PICKLED:
             obj = pickle.loads(obj)
         else:
diff --git a/Lib/test/support/script_helper.py b/Lib/test/support/script_helper.py
index 65e0bc199e7f0b..04458077d514b6 100644
--- a/Lib/test/support/script_helper.py
+++ b/Lib/test/support/script_helper.py
@@ -232,9 +232,13 @@ def make_script(script_dir, script_basename, source, omit_suffix=False):
     if not omit_suffix:
         script_filename += os.extsep + 'py'
     script_name = os.path.join(script_dir, script_filename)
-    # The script should be encoded to UTF-8, the default string encoding
-    with open(script_name, 'w', encoding='utf-8') as script_file:
-        script_file.write(source)
+    if isinstance(source, str):
+        # The script should be encoded to UTF-8, the default string encoding
+        with open(script_name, 'w', encoding='utf-8') as script_file:
+            script_file.write(source)
+    else:
+        with open(script_name, 'wb') as script_file:
+            script_file.write(source)
     importlib.invalidate_caches()
     return script_name
 
diff --git a/Lib/test/support/testcase.py b/Lib/test/support/testcase.py
index 1e4363b15783eb..fd32457d1467ca 100644
--- a/Lib/test/support/testcase.py
+++ b/Lib/test/support/testcase.py
@@ -1,3 +1,63 @@
+from math import copysign, isnan
+
+
+class ExtraAssertions:
+
+    def assertIsSubclass(self, cls, superclass, msg=None):
+        if issubclass(cls, superclass):
+            return
+        standardMsg = f'{cls!r} is not a subclass of {superclass!r}'
+        self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertNotIsSubclass(self, cls, superclass, msg=None):
+        if not issubclass(cls, superclass):
+            return
+        standardMsg = f'{cls!r} is a subclass of {superclass!r}'
+        self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertHasAttr(self, obj, name, msg=None):
+        if not hasattr(obj, name):
+            if isinstance(obj, types.ModuleType):
+                standardMsg = f'module {obj.__name__!r} has no attribute {name!r}'
+            elif isinstance(obj, type):
+                standardMsg = f'type object {obj.__name__!r} has no attribute {name!r}'
+            else:
+                standardMsg = f'{type(obj).__name__!r} object has no attribute {name!r}'
+            self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertNotHasAttr(self, obj, name, msg=None):
+        if hasattr(obj, name):
+            if isinstance(obj, types.ModuleType):
+                standardMsg = f'module {obj.__name__!r} has unexpected attribute {name!r}'
+            elif isinstance(obj, type):
+                standardMsg = f'type object {obj.__name__!r} has unexpected attribute {name!r}'
+            else:
+                standardMsg = f'{type(obj).__name__!r} object has unexpected attribute {name!r}'
+            self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertStartsWith(self, s, prefix, msg=None):
+        if s.startswith(prefix):
+            return
+        standardMsg = f"{s!r} doesn't start with {prefix!r}"
+        self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertNotStartsWith(self, s, prefix, msg=None):
+        if not s.startswith(prefix):
+            return
+        self.fail(self._formatMessage(msg, f"{s!r} starts with {prefix!r}"))
+
+    def assertEndsWith(self, s, suffix, msg=None):
+        if s.endswith(suffix):
+            return
+        standardMsg = f"{s!r} doesn't end with {suffix!r}"
+        self.fail(self._formatMessage(msg, standardMsg))
+
+    def assertNotEndsWith(self, s, suffix, msg=None):
+        if not s.endswith(suffix):
+            return
+        self.fail(self._formatMessage(msg, f"{s!r} ends with {suffix!r}"))
+
+
 class ExceptionIsLikeMixin:
     def assertExceptionIsLike(self, exc, template):
         """
@@ -23,3 +83,40 @@ def assertExceptionIsLike(self, exc, template):
             self.assertEqual(len(exc.exceptions), len(template.exceptions))
             for e, t in zip(exc.exceptions, template.exceptions):
                 self.assertExceptionIsLike(e, t)
+
+
+class FloatsAreIdenticalMixin:
+    def assertFloatsAreIdentical(self, x, y):
+        """Fail unless floats x and y are identical, in the sense that:
+        (1) both x and y are nans, or
+        (2) both x and y are infinities, with the same sign, or
+        (3) both x and y are zeros, with the same sign, or
+        (4) x and y are both finite and nonzero, and x == y
+
+        """
+        msg = 'floats {!r} and {!r} are not identical'
+
+        if isnan(x) or isnan(y):
+            if isnan(x) and isnan(y):
+                return
+        elif x == y:
+            if x != 0.0:
+                return
+            # both zero; check that signs match
+            elif copysign(1.0, x) == copysign(1.0, y):
+                return
+            else:
+                msg += ': zeros have different signs'
+        self.fail(msg.format(x, y))
+
+
+class ComplexesAreIdenticalMixin(FloatsAreIdenticalMixin):
+    def assertComplexesAreIdentical(self, x, y):
+        """Fail unless complex numbers x and y have equal values and signs.
+
+        In particular, if x and y both have real (or imaginary) part
+        zero, but the zeros have different signs, this test will fail.
+
+        """
+        self.assertFloatsAreIdentical(x.real, y.real)
+        self.assertFloatsAreIdentical(x.imag, y.imag)
diff --git a/Lib/test/support/venv.py b/Lib/test/support/venv.py
new file mode 100644
index 00000000000000..78e6a51ec1815e
--- /dev/null
+++ b/Lib/test/support/venv.py
@@ -0,0 +1,70 @@
+import contextlib
+import logging
+import os
+import subprocess
+import shlex
+import sys
+import sysconfig
+import tempfile
+import venv
+
+
+class VirtualEnvironment:
+    def __init__(self, prefix, **venv_create_args):
+        self._logger = logging.getLogger(self.__class__.__name__)
+        venv.create(prefix, **venv_create_args)
+        self._prefix = prefix
+        self._paths = sysconfig.get_paths(
+            scheme='venv',
+            vars={'base': self.prefix},
+            expand=True,
+        )
+
+    @classmethod
+    @contextlib.contextmanager
+    def from_tmpdir(cls, *, prefix=None, dir=None, **venv_create_args):
+        delete = not bool(os.environ.get('PYTHON_TESTS_KEEP_VENV'))
+        with tempfile.TemporaryDirectory(prefix=prefix, dir=dir, delete=delete) as tmpdir:
+            yield cls(tmpdir, **venv_create_args)
+
+    @property
+    def prefix(self):
+        return self._prefix
+
+    @property
+    def paths(self):
+        return self._paths
+
+    @property
+    def interpreter(self):
+        return os.path.join(self.paths['scripts'], os.path.basename(sys.executable))
+
+    def _format_output(self, name, data, indent='\t'):
+        if not data:
+            return indent + f'{name}: (none)'
+        if len(data.splitlines()) == 1:
+            return indent + f'{name}: {data}'
+        else:
+            prefixed_lines = '\n'.join(indent + '> ' + line for line in data.splitlines())
+            return indent + f'{name}:\n' + prefixed_lines
+
+    def run(self, *args, **subprocess_args):
+        if subprocess_args.get('shell'):
+            raise ValueError('Running the subprocess in shell mode is not supported.')
+        default_args = {
+            'capture_output': True,
+            'check': True,
+        }
+        try:
+            result = subprocess.run([self.interpreter, *args], **default_args | subprocess_args)
+        except subprocess.CalledProcessError as e:
+            if e.returncode != 0:
+                self._logger.error(
+                    f'Interpreter returned non-zero exit status {e.returncode}.\n'
+                    + self._format_output('COMMAND', shlex.join(e.cmd)) + '\n'
+                    + self._format_output('STDOUT', e.stdout.decode()) + '\n'
+                    + self._format_output('STDERR', e.stderr.decode()) + '\n'
+                )
+            raise
+        else:
+            return result
diff --git a/Lib/test/test__colorize.py b/Lib/test/test__colorize.py
index d55b97ade68cef..056a5306ced183 100644
--- a/Lib/test/test__colorize.py
+++ b/Lib/test/test__colorize.py
@@ -1,58 +1,134 @@
 import contextlib
+import io
 import sys
 import unittest
 import unittest.mock
 import _colorize
-from test.support import force_not_colorized
+from test.support.os_helper import EnvironmentVarGuard
 
-ORIGINAL_CAN_COLORIZE = _colorize.can_colorize
 
+@contextlib.contextmanager
+def clear_env():
+    with EnvironmentVarGuard() as mock_env:
+        for var in "FORCE_COLOR", "NO_COLOR", "PYTHON_COLORS":
+            mock_env.unset(var)
+        yield mock_env
 
-def setUpModule():
-    _colorize.can_colorize = lambda: False
 
-
-def tearDownModule():
-    _colorize.can_colorize = ORIGINAL_CAN_COLORIZE
+def supports_virtual_terminal():
+    if sys.platform == "win32":
+        return unittest.mock.patch("nt._supports_virtual_terminal", return_value=True)
+    else:
+        return contextlib.nullcontext()
 
 
 class TestColorizeFunction(unittest.TestCase):
-    @force_not_colorized
     def test_colorized_detection_checks_for_environment_variables(self):
-        if sys.platform == "win32":
-            virtual_patching = unittest.mock.patch("nt._supports_virtual_terminal",
-                                                   return_value=True)
-        else:
-            virtual_patching = contextlib.nullcontext()
-        with virtual_patching:
-
-            flags = unittest.mock.MagicMock(ignore_environment=False)
-            with (unittest.mock.patch("os.isatty") as isatty_mock,
-                  unittest.mock.patch("sys.flags", flags),
-                  unittest.mock.patch("_colorize.can_colorize", ORIGINAL_CAN_COLORIZE)):
+        def check(env, fallback, expected):
+            with (self.subTest(env=env, fallback=fallback),
+                  clear_env() as mock_env):
+                mock_env.update(env)
+                isatty_mock.return_value = fallback
+                stdout_mock.isatty.return_value = fallback
+                self.assertEqual(_colorize.can_colorize(), expected)
+
+        with (unittest.mock.patch("os.isatty") as isatty_mock,
+              unittest.mock.patch("sys.stdout") as stdout_mock,
+              supports_virtual_terminal()):
+            stdout_mock.fileno.return_value = 1
+
+            for fallback in False, True:
+                check({}, fallback, fallback)
+                check({'TERM': 'dumb'}, fallback, False)
+                check({'TERM': 'xterm'}, fallback, fallback)
+                check({'TERM': ''}, fallback, fallback)
+                check({'FORCE_COLOR': '1'}, fallback, True)
+                check({'FORCE_COLOR': '0'}, fallback, True)
+                check({'FORCE_COLOR': ''}, fallback, fallback)
+                check({'NO_COLOR': '1'}, fallback, False)
+                check({'NO_COLOR': '0'}, fallback, False)
+                check({'NO_COLOR': ''}, fallback, fallback)
+
+            check({'TERM': 'dumb', 'FORCE_COLOR': '1'}, False, True)
+            check({'FORCE_COLOR': '1', 'NO_COLOR': '1'}, True, False)
+
+            for ignore_environment in False, True:
+                # Simulate running with or without `-E`.
+                flags = unittest.mock.MagicMock(ignore_environment=ignore_environment)
+                with unittest.mock.patch("sys.flags", flags):
+                    check({'PYTHON_COLORS': '1'}, True, True)
+                    check({'PYTHON_COLORS': '1'}, False, not ignore_environment)
+                    check({'PYTHON_COLORS': '0'}, True, ignore_environment)
+                    check({'PYTHON_COLORS': '0'}, False, False)
+                    for fallback in False, True:
+                        check({'PYTHON_COLORS': 'x'}, fallback, fallback)
+                        check({'PYTHON_COLORS': ''}, fallback, fallback)
+
+                    check({'TERM': 'dumb', 'PYTHON_COLORS': '1'}, False, not ignore_environment)
+                    check({'NO_COLOR': '1', 'PYTHON_COLORS': '1'}, False, not ignore_environment)
+                    check({'FORCE_COLOR': '1', 'PYTHON_COLORS': '0'}, True, ignore_environment)
+
+    @unittest.skipUnless(sys.platform == "win32", "requires Windows")
+    def test_colorized_detection_checks_on_windows(self):
+        with (clear_env(),
+              unittest.mock.patch("os.isatty") as isatty_mock,
+              unittest.mock.patch("sys.stdout") as stdout_mock,
+              supports_virtual_terminal() as vt_mock):
+            stdout_mock.fileno.return_value = 1
+            isatty_mock.return_value = True
+            stdout_mock.isatty.return_value = True
+
+            vt_mock.return_value = True
+            self.assertEqual(_colorize.can_colorize(), True)
+            vt_mock.return_value = False
+            self.assertEqual(_colorize.can_colorize(), False)
+            import nt
+            del nt._supports_virtual_terminal
+            self.assertEqual(_colorize.can_colorize(), False)
+
+    def test_colorized_detection_checks_for_std_streams(self):
+        with (clear_env(),
+              unittest.mock.patch("os.isatty") as isatty_mock,
+              unittest.mock.patch("sys.stdout") as stdout_mock,
+              unittest.mock.patch("sys.stderr") as stderr_mock,
+              supports_virtual_terminal()):
+            stdout_mock.fileno.return_value = 1
+            stderr_mock.fileno.side_effect = ZeroDivisionError
+            stderr_mock.isatty.side_effect = ZeroDivisionError
+
+            isatty_mock.return_value = True
+            stdout_mock.isatty.return_value = True
+            self.assertEqual(_colorize.can_colorize(), True)
+
+            isatty_mock.return_value = False
+            stdout_mock.isatty.return_value = False
+            self.assertEqual(_colorize.can_colorize(), False)
+
+    def test_colorized_detection_checks_for_file(self):
+        with clear_env(), supports_virtual_terminal():
+
+            with unittest.mock.patch("os.isatty") as isatty_mock:
+                file = unittest.mock.MagicMock()
+                file.fileno.return_value = 1
                 isatty_mock.return_value = True
-                with unittest.mock.patch("os.environ", {'TERM': 'dumb'}):
-                    self.assertEqual(_colorize.can_colorize(), False)
-                with unittest.mock.patch("os.environ", {'PYTHON_COLORS': '1'}):
-                    self.assertEqual(_colorize.can_colorize(), True)
-                with unittest.mock.patch("os.environ", {'PYTHON_COLORS': '0'}):
-                    self.assertEqual(_colorize.can_colorize(), False)
-                with unittest.mock.patch("os.environ", {'NO_COLOR': '1'}):
-                    self.assertEqual(_colorize.can_colorize(), False)
-                with unittest.mock.patch("os.environ",
-                                         {'NO_COLOR': '1', "PYTHON_COLORS": '1'}):
-                    self.assertEqual(_colorize.can_colorize(), True)
-                with unittest.mock.patch("os.environ", {'FORCE_COLOR': '1'}):
-                    self.assertEqual(_colorize.can_colorize(), True)
-                with unittest.mock.patch("os.environ",
-                                         {'FORCE_COLOR': '1', 'NO_COLOR': '1'}):
-                    self.assertEqual(_colorize.can_colorize(), False)
-                with unittest.mock.patch("os.environ",
-                                         {'FORCE_COLOR': '1', "PYTHON_COLORS": '0'}):
-                    self.assertEqual(_colorize.can_colorize(), False)
+                self.assertEqual(_colorize.can_colorize(file=file), True)
                 isatty_mock.return_value = False
-                with unittest.mock.patch("os.environ", {}):
-                    self.assertEqual(_colorize.can_colorize(), False)
+                self.assertEqual(_colorize.can_colorize(file=file), False)
+
+            # No file.fileno.
+            with unittest.mock.patch("os.isatty", side_effect=ZeroDivisionError):
+                file = unittest.mock.MagicMock(spec=['isatty'])
+                file.isatty.return_value = True
+                self.assertEqual(_colorize.can_colorize(file=file), False)
+
+            # file.fileno() raises io.UnsupportedOperation.
+            with unittest.mock.patch("os.isatty", side_effect=ZeroDivisionError):
+                file = unittest.mock.MagicMock()
+                file.fileno.side_effect = io.UnsupportedOperation
+                file.isatty.return_value = True
+                self.assertEqual(_colorize.can_colorize(file=file), True)
+                file.isatty.return_value = False
+                self.assertEqual(_colorize.can_colorize(file=file), False)
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test__interpchannels.py b/Lib/test/test__interpchannels.py
index b76c58917c0b9c..4a7f04b9df9843 100644
--- a/Lib/test/test__interpchannels.py
+++ b/Lib/test/test__interpchannels.py
@@ -8,6 +8,8 @@
 
 from test.support import import_helper
 
+_channels = import_helper.import_module('_interpchannels')
+from test.support.interpreters import _crossinterp
 from test.test__interpreters import (
     _interpreters,
     _run_output,
@@ -15,7 +17,7 @@
 )
 
 
-_channels = import_helper.import_module('_interpchannels')
+REPLACE = _crossinterp._UNBOUND_CONSTANT_TO_FLAG[_crossinterp.UNBOUND]
 
 
 # Additional tests are found in Lib/test/test_interpreters/test_channels.py.
@@ -29,9 +31,19 @@
 def recv_wait(cid):
     while True:
         try:
-            return _channels.recv(cid)
+            obj, unboundop = _channels.recv(cid)
         except _channels.ChannelEmptyError:
             time.sleep(0.1)
+        else:
+            assert unboundop is None, repr(unboundop)
+            return obj
+
+
+def recv_nowait(cid, *args, unbound=False):
+    obj, unboundop = _channels.recv(cid, *args)
+    assert (unboundop is None) != unbound, repr(unboundop)
+    return obj
+
 
 #@contextmanager
 #def run_threaded(id, source, **shared):
@@ -212,7 +224,7 @@ def _run_action(cid, action, end, state):
                 else:
                     raise Exception('expected ChannelEmptyError')
             else:
-                _channels.recv(cid)
+                recv_nowait(cid)
                 return state.decr()
         else:
             raise ValueError(end)
@@ -235,7 +247,7 @@ def _run_action(cid, action, end, state):
 
 
 def clean_up_channels():
-    for cid in _channels.list_all():
+    for cid, _ in _channels.list_all():
         try:
             _channels.destroy(cid)
         except _channels.ChannelNotFoundError:
@@ -297,7 +309,7 @@ def test_bad_kwargs(self):
             _channels._channel_id(10, send=False, recv=False)
 
     def test_does_not_exist(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         with self.assertRaises(_channels.ChannelNotFoundError):
             _channels._channel_id(int(cid) + 1)  # unforced
 
@@ -319,9 +331,9 @@ def test_repr(self):
         self.assertEqual(repr(cid), 'ChannelID(10)')
 
     def test_equality(self):
-        cid1 = _channels.create()
+        cid1 = _channels.create(REPLACE)
         cid2 = _channels._channel_id(int(cid1))
-        cid3 = _channels.create()
+        cid3 = _channels.create(REPLACE)
 
         self.assertTrue(cid1 == cid1)
         self.assertTrue(cid1 == cid2)
@@ -341,11 +353,11 @@ def test_equality(self):
         self.assertTrue(cid1 != cid3)
 
     def test_shareable(self):
-        chan = _channels.create()
+        chan = _channels.create(REPLACE)
 
-        obj = _channels.create()
+        obj = _channels.create(REPLACE)
         _channels.send(chan, obj, blocking=False)
-        got = _channels.recv(chan)
+        got = recv_nowait(chan)
 
         self.assertEqual(got, obj)
         self.assertIs(type(got), type(obj))
@@ -356,15 +368,15 @@ def test_shareable(self):
 class ChannelTests(TestBase):
 
     def test_create_cid(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         self.assertIsInstance(cid, _channels.ChannelID)
 
     def test_sequential_ids(self):
-        before = _channels.list_all()
-        id1 = _channels.create()
-        id2 = _channels.create()
-        id3 = _channels.create()
-        after = _channels.list_all()
+        before = [cid for cid, _ in _channels.list_all()]
+        id1 = _channels.create(REPLACE)
+        id2 = _channels.create(REPLACE)
+        id3 = _channels.create(REPLACE)
+        after = [cid for cid, _ in _channels.list_all()]
 
         self.assertEqual(id2, int(id1) + 1)
         self.assertEqual(id3, int(id2) + 1)
@@ -374,7 +386,7 @@ def test_ids_global(self):
         id1 = _interpreters.create()
         out = _run_output(id1, dedent("""
             import _interpchannels as _channels
-            cid = _channels.create()
+            cid = _channels.create(3)
             print(cid)
             """))
         cid1 = int(out.strip())
@@ -382,7 +394,7 @@ def test_ids_global(self):
         id2 = _interpreters.create()
         out = _run_output(id2, dedent("""
             import _interpchannels as _channels
-            cid = _channels.create()
+            cid = _channels.create(3)
             print(cid)
             """))
         cid2 = int(out.strip())
@@ -392,7 +404,7 @@ def test_ids_global(self):
     def test_channel_list_interpreters_none(self):
         """Test listing interpreters for a channel with no associations."""
         # Test for channel with no associated _interpreters.
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         send_interps = _channels.list_interpreters(cid, send=True)
         recv_interps = _channels.list_interpreters(cid, send=False)
         self.assertEqual(send_interps, [])
@@ -401,7 +413,7 @@ def test_channel_list_interpreters_none(self):
     def test_channel_list_interpreters_basic(self):
         """Test basic listing channel _interpreters."""
         interp0, *_ = _interpreters.get_main()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, "send", blocking=False)
         # Test for a channel that has one end associated to an interpreter.
         send_interps = _channels.list_interpreters(cid, send=True)
@@ -412,7 +424,7 @@ def test_channel_list_interpreters_basic(self):
         interp1 = _interpreters.create()
         _run_output(interp1, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         # Test for channel that has both ends associated to an interpreter.
         send_interps = _channels.list_interpreters(cid, send=True)
@@ -426,7 +438,7 @@ def test_channel_list_interpreters_multiple(self):
         interp1 = _interpreters.create()
         interp2 = _interpreters.create()
         interp3 = _interpreters.create()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
 
         _channels.send(cid, "send", blocking=False)
         _run_output(interp1, dedent(f"""
@@ -435,11 +447,11 @@ def test_channel_list_interpreters_multiple(self):
             """))
         _run_output(interp2, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         _run_output(interp3, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         send_interps = _channels.list_interpreters(cid, send=True)
         recv_interps = _channels.list_interpreters(cid, send=False)
@@ -450,11 +462,11 @@ def test_channel_list_interpreters_destroyed(self):
         """Test listing channel interpreters with a destroyed interpreter."""
         interp0, *_ = _interpreters.get_main()
         interp1 = _interpreters.create()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, "send", blocking=False)
         _run_output(interp1, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         # Should be one interpreter associated with each end.
         send_interps = _channels.list_interpreters(cid, send=True)
@@ -476,16 +488,16 @@ def test_channel_list_interpreters_released(self):
         interp0, *_ = _interpreters.get_main()
         interp1 = _interpreters.create()
         interp2 = _interpreters.create()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, "data", blocking=False)
         _run_output(interp1, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         _channels.send(cid, "data", blocking=False)
         _run_output(interp2, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            _channels.recv({cid})
             """))
         # Check the setup.
         send_interps = _channels.list_interpreters(cid, send=True)
@@ -516,7 +528,7 @@ def test_channel_list_interpreters_closed(self):
         """Test listing channel interpreters with a closed channel."""
         interp0, *_ = _interpreters.get_main()
         interp1 = _interpreters.create()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         # Put something in the channel so that it's not empty.
         _channels.send(cid, "send", blocking=False)
 
@@ -538,7 +550,7 @@ def test_channel_list_interpreters_closed_send_end(self):
         """Test listing channel interpreters with a channel's send end closed."""
         interp0, *_ = _interpreters.get_main()
         interp1 = _interpreters.create()
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         # Put something in the channel so that it's not empty.
         _channels.send(cid, "send", blocking=False)
 
@@ -570,7 +582,7 @@ def test_channel_list_interpreters_closed_send_end(self):
             _channels.list_interpreters(cid, send=False)
 
     def test_allowed_types(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         objects = [
             None,
             'spam',
@@ -580,7 +592,7 @@ def test_allowed_types(self):
         for obj in objects:
             with self.subTest(obj):
                 _channels.send(cid, obj, blocking=False)
-                got = _channels.recv(cid)
+                got = recv_nowait(cid)
 
                 self.assertEqual(got, obj)
                 self.assertIs(type(got), type(obj))
@@ -589,7 +601,7 @@ def test_allowed_types(self):
                 # XXX What about between interpreters?
 
     def test_run_string_arg_unresolved(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         interp = _interpreters.create()
 
         _interpreters.set___main___attrs(interp, dict(cid=cid.send))
@@ -598,7 +610,7 @@ def test_run_string_arg_unresolved(self):
             print(cid.end)
             _channels.send(cid, b'spam', blocking=False)
             """))
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertEqual(obj, b'spam')
         self.assertEqual(out.strip(), 'send')
@@ -608,7 +620,7 @@ def test_run_string_arg_unresolved(self):
     # Note: this test caused crashes on some buildbots (bpo-33615).
     @unittest.skip('disabled until high-level channels exist')
     def test_run_string_arg_resolved(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         cid = _channels._channel_id(cid, _resolve=True)
         interp = _interpreters.create()
 
@@ -618,7 +630,7 @@ def test_run_string_arg_resolved(self):
             _channels.send(chan.id, b'spam', blocking=False)
             """),
             dict(chan=cid.send))
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertEqual(obj, b'spam')
         self.assertEqual(out.strip(), 'send')
@@ -627,10 +639,10 @@ def test_run_string_arg_resolved(self):
     # send/recv
 
     def test_send_recv_main(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         orig = b'spam'
         _channels.send(cid, orig, blocking=False)
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertEqual(obj, orig)
         self.assertIsNot(obj, orig)
@@ -639,27 +651,27 @@ def test_send_recv_same_interpreter(self):
         id1 = _interpreters.create()
         out = _run_output(id1, dedent("""
             import _interpchannels as _channels
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             orig = b'spam'
             _channels.send(cid, orig, blocking=False)
-            obj = _channels.recv(cid)
+            obj, _ = _channels.recv(cid)
             assert obj is not orig
             assert obj == orig
             """))
 
     def test_send_recv_different_interpreters(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         id1 = _interpreters.create()
         out = _run_output(id1, dedent(f"""
             import _interpchannels as _channels
             _channels.send({cid}, b'spam', blocking=False)
             """))
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertEqual(obj, b'spam')
 
     def test_send_recv_different_threads(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
 
         def f():
             obj = recv_wait(cid)
@@ -674,7 +686,7 @@ def f():
         self.assertEqual(obj, b'spam')
 
     def test_send_recv_different_interpreters_and_threads(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         id1 = _interpreters.create()
         out = None
 
@@ -685,7 +697,7 @@ def f():
                 import _interpchannels as _channels
                 while True:
                     try:
-                        obj = _channels.recv({cid})
+                        obj, _ = _channels.recv({cid})
                         break
                     except _channels.ChannelEmptyError:
                         time.sleep(0.1)
@@ -710,23 +722,23 @@ def test_recv_not_found(self):
             _channels.recv(10)
 
     def test_recv_empty(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         with self.assertRaises(_channels.ChannelEmptyError):
             _channels.recv(cid)
 
     def test_recv_default(self):
         default = object()
-        cid = _channels.create()
-        obj1 = _channels.recv(cid, default)
+        cid = _channels.create(REPLACE)
+        obj1 = recv_nowait(cid, default)
         _channels.send(cid, None, blocking=False)
         _channels.send(cid, 1, blocking=False)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'eggs', blocking=False)
-        obj2 = _channels.recv(cid, default)
-        obj3 = _channels.recv(cid, default)
-        obj4 = _channels.recv(cid)
-        obj5 = _channels.recv(cid, default)
-        obj6 = _channels.recv(cid, default)
+        obj2 = recv_nowait(cid, default)
+        obj3 = recv_nowait(cid, default)
+        obj4 = recv_nowait(cid)
+        obj5 = recv_nowait(cid, default)
+        obj6 = recv_nowait(cid, default)
 
         self.assertIs(obj1, default)
         self.assertIs(obj2, None)
@@ -737,7 +749,7 @@ def test_recv_default(self):
 
     def test_recv_sending_interp_destroyed(self):
         with self.subTest('closed'):
-            cid1 = _channels.create()
+            cid1 = _channels.create(REPLACE)
             interp = _interpreters.create()
             _interpreters.run_string(interp, dedent(f"""
                 import _interpchannels as _channels
@@ -750,7 +762,7 @@ def test_recv_sending_interp_destroyed(self):
                 _channels.recv(cid1)
             del cid1
         with self.subTest('still open'):
-            cid2 = _channels.create()
+            cid2 = _channels.create(REPLACE)
             interp = _interpreters.create()
             _interpreters.run_string(interp, dedent(f"""
                 import _interpchannels as _channels
@@ -759,7 +771,8 @@ def test_recv_sending_interp_destroyed(self):
             _channels.send(cid2, b'eggs', blocking=False)
             _interpreters.destroy(interp)
 
-            _channels.recv(cid2)
+            recv_nowait(cid2, unbound=True)
+            recv_nowait(cid2, unbound=False)
             with self.assertRaisesRegex(RuntimeError,
                                         f'channel {cid2} is empty'):
                 _channels.recv(cid2)
@@ -770,9 +783,9 @@ def test_recv_sending_interp_destroyed(self):
 
     def test_send_buffer(self):
         buf = bytearray(b'spamspamspam')
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send_buffer(cid, buf, blocking=False)
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertIsNot(obj, buf)
         self.assertIsInstance(obj, memoryview)
@@ -794,12 +807,12 @@ def build_send_waiter(self, obj, *, buffer=False):
         else:
             send = _channels.send
 
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         try:
             started = time.monotonic()
             send(cid, obj, blocking=False)
             stopped = time.monotonic()
-            _channels.recv(cid)
+            recv_nowait(cid)
         finally:
             _channels.destroy(cid)
         delay = stopped - started  # seconds
@@ -813,7 +826,7 @@ def test_send_blocking_waiting(self):
         received = None
         obj = b'spam'
         wait = self.build_send_waiter(obj)
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         def f():
             nonlocal received
             wait()
@@ -829,7 +842,7 @@ def test_send_buffer_blocking_waiting(self):
         received = None
         obj = bytearray(b'spam')
         wait = self.build_send_waiter(obj, buffer=True)
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         def f():
             nonlocal received
             wait()
@@ -844,7 +857,7 @@ def f():
     def test_send_blocking_no_wait(self):
         received = None
         obj = b'spam'
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         def f():
             nonlocal received
             received = recv_wait(cid)
@@ -858,7 +871,7 @@ def f():
     def test_send_buffer_blocking_no_wait(self):
         received = None
         obj = bytearray(b'spam')
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         def f():
             nonlocal received
             received = recv_wait(cid)
@@ -873,20 +886,20 @@ def test_send_timeout(self):
         obj = b'spam'
 
         with self.subTest('non-blocking with timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             with self.assertRaises(ValueError):
                 _channels.send(cid, obj, blocking=False, timeout=0.1)
 
         with self.subTest('timeout hit'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             with self.assertRaises(TimeoutError):
                 _channels.send(cid, obj, blocking=True, timeout=0.1)
             with self.assertRaises(_channels.ChannelEmptyError):
-                received = _channels.recv(cid)
+                received = recv_nowait(cid)
                 print(repr(received))
 
         with self.subTest('timeout not hit'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 recv_wait(cid)
             t = threading.Thread(target=f)
@@ -910,20 +923,20 @@ def test_send_buffer_timeout(self):
         obj = bytearray(b'spam')
 
         with self.subTest('non-blocking with timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             with self.assertRaises(ValueError):
                 _channels.send_buffer(cid, obj, blocking=False, timeout=0.1)
 
         with self.subTest('timeout hit'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             with self.assertRaises(TimeoutError):
                 _channels.send_buffer(cid, obj, blocking=True, timeout=0.1)
             with self.assertRaises(_channels.ChannelEmptyError):
-                received = _channels.recv(cid)
+                received = recv_nowait(cid)
                 print(repr(received))
 
         with self.subTest('timeout not hit'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 recv_wait(cid)
             t = threading.Thread(target=f)
@@ -936,7 +949,7 @@ def test_send_closed_while_waiting(self):
         wait = self.build_send_waiter(obj)
 
         with self.subTest('without timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 wait()
                 _channels.close(cid, force=True)
@@ -947,7 +960,7 @@ def f():
             t.join()
 
         with self.subTest('with timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 wait()
                 _channels.close(cid, force=True)
@@ -974,7 +987,7 @@ def test_send_buffer_closed_while_waiting(self):
         wait = self.build_send_waiter(obj, buffer=True)
 
         with self.subTest('without timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 wait()
                 _channels.close(cid, force=True)
@@ -985,7 +998,7 @@ def f():
             t.join()
 
         with self.subTest('with timeout'):
-            cid = _channels.create()
+            cid = _channels.create(REPLACE)
             def f():
                 wait()
                 _channels.close(cid, force=True)
@@ -999,9 +1012,9 @@ def f():
     # close
 
     def test_close_single_user(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.close(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1010,7 +1023,7 @@ def test_close_single_user(self):
             _channels.recv(cid)
 
     def test_close_multiple_users(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         id1 = _interpreters.create()
         id2 = _interpreters.create()
         _interpreters.run_string(id1, dedent(f"""
@@ -1034,9 +1047,9 @@ def test_close_multiple_users(self):
         self.assertEqual(excsnap.type.__name__, 'ChannelClosedError')
 
     def test_close_multiple_times(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.close(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1051,9 +1064,9 @@ def test_close_empty(self):
             ]
         for send, recv in tests:
             with self.subTest((send, recv)):
-                cid = _channels.create()
+                cid = _channels.create(REPLACE)
                 _channels.send(cid, b'spam', blocking=False)
-                _channels.recv(cid)
+                recv_nowait(cid)
                 _channels.close(cid, send=send, recv=recv)
 
                 with self.assertRaises(_channels.ChannelClosedError):
@@ -1062,56 +1075,56 @@ def test_close_empty(self):
                     _channels.recv(cid)
 
     def test_close_defaults_with_unused_items(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(_channels.ChannelNotEmptyError):
             _channels.close(cid)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.send(cid, b'eggs', blocking=False)
 
     def test_close_recv_with_unused_items_unforced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(_channels.ChannelNotEmptyError):
             _channels.close(cid, recv=True)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.send(cid, b'eggs', blocking=False)
-        _channels.recv(cid)
-        _channels.recv(cid)
+        recv_nowait(cid)
+        recv_nowait(cid)
         _channels.close(cid, recv=True)
 
     def test_close_send_with_unused_items_unforced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
         _channels.close(cid, send=True)
 
         with self.assertRaises(_channels.ChannelClosedError):
             _channels.send(cid, b'eggs')
-        _channels.recv(cid)
-        _channels.recv(cid)
+        recv_nowait(cid)
+        recv_nowait(cid)
         with self.assertRaises(_channels.ChannelClosedError):
             _channels.recv(cid)
 
     def test_close_both_with_unused_items_unforced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
 
         with self.assertRaises(_channels.ChannelNotEmptyError):
             _channels.close(cid, recv=True, send=True)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.send(cid, b'eggs', blocking=False)
-        _channels.recv(cid)
-        _channels.recv(cid)
+        recv_nowait(cid)
+        recv_nowait(cid)
         _channels.close(cid, recv=True)
 
     def test_close_recv_with_unused_items_forced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
         _channels.close(cid, recv=True, force=True)
@@ -1122,7 +1135,7 @@ def test_close_recv_with_unused_items_forced(self):
             _channels.recv(cid)
 
     def test_close_send_with_unused_items_forced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
         _channels.close(cid, send=True, force=True)
@@ -1133,7 +1146,7 @@ def test_close_send_with_unused_items_forced(self):
             _channels.recv(cid)
 
     def test_close_both_with_unused_items_forced(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
         _channels.close(cid, send=True, recv=True, force=True)
@@ -1144,7 +1157,7 @@ def test_close_both_with_unused_items_forced(self):
             _channels.recv(cid)
 
     def test_close_never_used(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.close(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1153,7 +1166,7 @@ def test_close_never_used(self):
             _channels.recv(cid)
 
     def test_close_by_unassociated_interp(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         interp = _interpreters.create()
         _interpreters.run_string(interp, dedent(f"""
@@ -1166,11 +1179,11 @@ def test_close_by_unassociated_interp(self):
             _channels.close(cid)
 
     def test_close_used_multiple_times_by_single_user(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.close(cid, force=True)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1179,7 +1192,7 @@ def test_close_used_multiple_times_by_single_user(self):
             _channels.recv(cid)
 
     def test_channel_list_interpreters_invalid_channel(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         # Test for invalid channel ID.
         with self.assertRaises(_channels.ChannelNotFoundError):
             _channels.list_interpreters(1000, send=True)
@@ -1191,7 +1204,7 @@ def test_channel_list_interpreters_invalid_channel(self):
 
     def test_channel_list_interpreters_invalid_args(self):
         # Tests for invalid arguments passed to the API.
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         with self.assertRaises(TypeError):
             _channels.list_interpreters(cid)
 
@@ -1240,9 +1253,9 @@ class ChannelReleaseTests(TestBase):
     """
 
     def test_single_user(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.release(cid, send=True, recv=True)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1251,7 +1264,7 @@ def test_single_user(self):
             _channels.recv(cid)
 
     def test_multiple_users(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         id1 = _interpreters.create()
         id2 = _interpreters.create()
         _interpreters.run_string(id1, dedent(f"""
@@ -1260,7 +1273,7 @@ def test_multiple_users(self):
             """))
         out = _run_output(id2, dedent(f"""
             import _interpchannels as _channels
-            obj = _channels.recv({cid})
+            obj, _ = _channels.recv({cid})
             _channels.release({cid})
             print(repr(obj))
             """))
@@ -1271,9 +1284,9 @@ def test_multiple_users(self):
         self.assertEqual(out.strip(), "b'spam'")
 
     def test_no_kwargs(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.release(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1282,16 +1295,16 @@ def test_no_kwargs(self):
             _channels.recv(cid)
 
     def test_multiple_times(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.release(cid, send=True, recv=True)
 
         with self.assertRaises(_channels.ChannelClosedError):
             _channels.release(cid, send=True, recv=True)
 
     def test_with_unused_items(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'ham', blocking=False)
         _channels.release(cid, send=True, recv=True)
@@ -1300,7 +1313,7 @@ def test_with_unused_items(self):
             _channels.recv(cid)
 
     def test_never_used(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.release(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1309,14 +1322,14 @@ def test_never_used(self):
             _channels.recv(cid)
 
     def test_by_unassociated_interp(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         interp = _interpreters.create()
         _interpreters.run_string(interp, dedent(f"""
             import _interpchannels as _channels
             _channels.release({cid})
             """))
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
         _channels.release(cid)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1325,7 +1338,7 @@ def test_by_unassociated_interp(self):
 
     def test_close_if_unassociated(self):
         # XXX Something's not right with this test...
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         interp = _interpreters.create()
         _interpreters.run_string(interp, dedent(f"""
             import _interpchannels as _channels
@@ -1338,21 +1351,21 @@ def test_close_if_unassociated(self):
 
     def test_partially(self):
         # XXX Is partial close too weird/confusing?
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, None, blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.send(cid, b'spam', blocking=False)
         _channels.release(cid, send=True)
-        obj = _channels.recv(cid)
+        obj = recv_nowait(cid)
 
         self.assertEqual(obj, b'spam')
 
     def test_used_multiple_times_by_single_user(self):
-        cid = _channels.create()
+        cid = _channels.create(REPLACE)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'spam', blocking=False)
         _channels.send(cid, b'spam', blocking=False)
-        _channels.recv(cid)
+        recv_nowait(cid)
         _channels.release(cid, send=True, recv=True)
 
         with self.assertRaises(_channels.ChannelClosedError):
@@ -1428,9 +1441,9 @@ def clean_up(self):
 
     def _new_channel(self, creator):
         if creator.name == 'main':
-            return _channels.create()
+            return _channels.create(REPLACE)
         else:
-            ch = _channels.create()
+            ch = _channels.create(REPLACE)
             run_interp(creator.id, f"""
                 import _interpreters
                 cid = _xxsubchannels.create()
@@ -1439,7 +1452,7 @@ def _new_channel(self, creator):
                 _xxsubchannels.send({ch}, int(cid), blocking=False)
                 del _interpreters
                 """)
-            self._cid = _channels.recv(ch)
+            self._cid = recv_nowait(ch)
         return self._cid
 
     def _get_interpreter(self, interp):
@@ -1657,7 +1670,7 @@ def run_action(self, fix, action, *, hideclosed=True):
                 )
             fix.record_action(action, result)
         else:
-            _cid = _channels.create()
+            _cid = _channels.create(REPLACE)
             run_interp(interp.id, f"""
                 result = helpers.run_action(
                     {fix.cid},
@@ -1670,8 +1683,8 @@ def run_action(self, fix, action, *, hideclosed=True):
                 _channels.send({_cid}, b'X' if result.closed else b'', blocking=False)
                 """)
             result = ChannelState(
-                pending=int.from_bytes(_channels.recv(_cid), 'little'),
-                closed=bool(_channels.recv(_cid)),
+                pending=int.from_bytes(recv_nowait(_cid), 'little'),
+                closed=bool(recv_nowait(_cid)),
                 )
             fix.record_action(action, result)
 
@@ -1729,7 +1742,7 @@ def _assert_closed(self, fix):
         self.assertTrue(fix.state.closed)
 
         for _ in range(fix.state.pending):
-            _channels.recv(fix.cid)
+            recv_nowait(fix.cid)
         self._assert_closed_in_interp(fix)
 
         for interp in ('same', 'other'):
diff --git a/Lib/test/test__interpreters.py b/Lib/test/test__interpreters.py
index beeb280894ea99..8f32a446572d5a 100644
--- a/Lib/test/test__interpreters.py
+++ b/Lib/test/test__interpreters.py
@@ -551,6 +551,35 @@ def test_still_running(self):
             self.assertTrue(_interpreters.is_running(interp))
 
 
+class CommonTests(TestBase):
+    def setUp(self):
+        super().setUp()
+        self.id = _interpreters.create()
+
+    def test_signatures(self):
+        # See https://github.com/python/cpython/issues/126654
+        msg = "expected 'shared' to be a dict"
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.exec(self.id, 'a', 1)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.exec(self.id, 'a', shared=1)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.run_string(self.id, 'a', shared=1)
+        with self.assertRaisesRegex(TypeError, msg):
+            _interpreters.run_func(self.id, lambda: None, shared=1)
+
+    def test_invalid_shared_encoding(self):
+        # See https://github.com/python/cpython/issues/127196
+        bad_shared = {"\uD82A": 0}
+        msg = 'surrogates not allowed'
+        with self.assertRaisesRegex(UnicodeEncodeError, msg):
+            _interpreters.exec(self.id, 'a', shared=bad_shared)
+        with self.assertRaisesRegex(UnicodeEncodeError, msg):
+            _interpreters.run_string(self.id, 'a', shared=bad_shared)
+        with self.assertRaisesRegex(UnicodeEncodeError, msg):
+            _interpreters.run_func(self.id, lambda: None, shared=bad_shared)
+
+
 class RunStringTests(TestBase):
 
     def setUp(self):
diff --git a/Lib/test/test__locale.py b/Lib/test/test__locale.py
index 0947464bb8c04e..606dd297452bc4 100644
--- a/Lib/test/test__locale.py
+++ b/Lib/test/test__locale.py
@@ -1,4 +1,4 @@
-from _locale import (setlocale, LC_ALL, LC_CTYPE, LC_NUMERIC, localeconv, Error)
+from _locale import (setlocale, LC_ALL, LC_CTYPE, LC_NUMERIC, LC_TIME, localeconv, Error)
 try:
     from _locale import (RADIXCHAR, THOUSEP, nl_langinfo)
 except ImportError:
@@ -26,7 +26,10 @@
     'bs_BA', 'fr_LU', 'kl_GL', 'fa_IR', 'de_BE', 'sv_SE', 'it_CH', 'uk_UA',
     'eu_ES', 'vi_VN', 'af_ZA', 'nb_NO', 'en_DK', 'tg_TJ', 'ps_AF', 'en_US',
     'fr_FR.ISO8859-1', 'fr_FR.UTF-8', 'fr_FR.ISO8859-15@euro',
-    'ru_RU.KOI8-R', 'ko_KR.eucKR']
+    'ru_RU.KOI8-R', 'ko_KR.eucKR',
+    'ja_JP.UTF-8', 'lzh_TW.UTF-8', 'my_MM.UTF-8', 'or_IN.UTF-8', 'shn_MM.UTF-8',
+    'ar_AE.UTF-8', 'bn_IN.UTF-8', 'mr_IN.UTF-8', 'th_TH.TIS620',
+]
 
 def setUpModule():
     global candidate_locales
@@ -74,10 +77,36 @@ def accept(loc):
     'ps_AF': ('\u066b', '\u066c'),
 }
 
+known_alt_digits = {
+    'C': (0, {}),
+    'en_US': (0, {}),
+    'fa_IR': (100, {0: '\u06f0\u06f0', 10: '\u06f1\u06f0', 99: '\u06f9\u06f9'}),
+    'ja_JP': (100, {1: '\u4e00', 10: '\u5341', 99: '\u4e5d\u5341\u4e5d'}),
+    'lzh_TW': (32, {0: '\u3007', 10: '\u5341', 31: '\u5345\u4e00'}),
+    'my_MM': (100, {0: '\u1040\u1040', 10: '\u1041\u1040', 99: '\u1049\u1049'}),
+    'or_IN': (100, {0: '\u0b66', 10: '\u0b67\u0b66', 99: '\u0b6f\u0b6f'}),
+    'shn_MM': (100, {0: '\u1090\u1090', 10: '\u1091\u1090', 99: '\u1099\u1099'}),
+    'ar_AE': (100, {0: '\u0660', 10: '\u0661\u0660', 99: '\u0669\u0669'}),
+    'bn_IN': (100, {0: '\u09e6', 10: '\u09e7\u09e6', 99: '\u09ef\u09ef'}),
+}
+
+known_era = {
+    'C': (0, ''),
+    'en_US': (0, ''),
+    'ja_JP': (11, '+:1:2019/05/01:2019/12/31:令和:%EC元年'),
+    'zh_TW': (3, '+:1:1912/01/01:1912/12/31:民國:%EC元年'),
+    'th_TW': (1, '+:1:-543/01/01:+*:พ.ศ.:%EC %Ey'),
+}
+
 if sys.platform == 'win32':
     # ps_AF doesn't work on Windows: see bpo-38324 (msg361830)
     del known_numerics['ps_AF']
 
+if sys.platform == 'sunos5':
+    # On Solaris, Japanese ERAs start with the year 1927,
+    # and thus there's less of them.
+    known_era['ja_JP'] = (5, '+:1:2019/05/01:2019/12/31:令和:%EC元年')
+
 class _LocaleTests(unittest.TestCase):
 
     def setUp(self):
@@ -176,6 +205,80 @@ def test_lc_numeric_basic(self):
         if not tested:
             self.skipTest('no suitable locales')
 
+    @unittest.skipUnless(nl_langinfo, "nl_langinfo is not available")
+    @unittest.skipUnless(hasattr(locale, 'ALT_DIGITS'), "requires locale.ALT_DIGITS")
+    @unittest.skipIf(
+        support.is_emscripten or support.is_wasi,
+        "musl libc issue on Emscripten, bpo-46390"
+    )
+    def test_alt_digits_nl_langinfo(self):
+        # Test nl_langinfo(ALT_DIGITS)
+        tested = False
+        for loc in candidate_locales:
+            with self.subTest(locale=loc):
+                try:
+                    setlocale(LC_TIME, loc)
+                    setlocale(LC_CTYPE, loc)
+                except Error:
+                    self.skipTest(f'no locale {loc!r}')
+                    continue
+
+                with self.subTest(locale=loc):
+                    alt_digits = nl_langinfo(locale.ALT_DIGITS)
+                    self.assertIsInstance(alt_digits, str)
+                    alt_digits = alt_digits.split(';') if alt_digits else []
+                    if alt_digits:
+                        self.assertGreaterEqual(len(alt_digits), 10, alt_digits)
+                    loc1 = loc.split('.', 1)[0]
+                    if loc1 in known_alt_digits:
+                        count, samples = known_alt_digits[loc1]
+                        if count and not alt_digits:
+                            self.skipTest(f'ALT_DIGITS is not set for locale {loc!r} on this platform')
+                        self.assertEqual(len(alt_digits), count, alt_digits)
+                        for i in samples:
+                            self.assertEqual(alt_digits[i], samples[i])
+                    tested = True
+        if not tested:
+            self.skipTest('no suitable locales')
+
+    @unittest.skipUnless(nl_langinfo, "nl_langinfo is not available")
+    @unittest.skipUnless(hasattr(locale, 'ERA'), "requires locale.ERA")
+    @unittest.skipIf(
+        support.is_emscripten or support.is_wasi,
+        "musl libc issue on Emscripten, bpo-46390"
+    )
+    def test_era_nl_langinfo(self):
+        # Test nl_langinfo(ERA)
+        tested = False
+        for loc in candidate_locales:
+            with self.subTest(locale=loc):
+                try:
+                    setlocale(LC_TIME, loc)
+                    setlocale(LC_CTYPE, loc)
+                except Error:
+                    self.skipTest(f'no locale {loc!r}')
+                    continue
+
+                with self.subTest(locale=loc):
+                    era = nl_langinfo(locale.ERA)
+                    self.assertIsInstance(era, str)
+                    if era:
+                        self.assertEqual(era.count(':'), (era.count(';') + 1) * 5, era)
+
+                    loc1 = loc.split('.', 1)[0]
+                    if loc1 in known_era:
+                        count, sample = known_era[loc1]
+                        if count:
+                            if not era:
+                                self.skipTest(f'ERA is not set for locale {loc!r} on this platform')
+                            self.assertGreaterEqual(era.count(';') + 1, count)
+                            self.assertIn(sample, era)
+                        else:
+                            self.assertEqual(era, '')
+                    tested = True
+        if not tested:
+            self.skipTest('no suitable locales')
+
     def test_float_parsing(self):
         # Bug #1391872: Test whether float parsing is okay on European
         # locales.
diff --git a/Lib/test/test_android.py b/Lib/test/test_android.py
index 115882a4c281f6..076190f7572045 100644
--- a/Lib/test/test_android.py
+++ b/Lib/test/test_android.py
@@ -1,14 +1,17 @@
+import io
 import platform
 import queue
 import re
 import subprocess
 import sys
 import unittest
+from _android_support import TextLogStream
 from array import array
-from contextlib import contextmanager
+from contextlib import ExitStack, contextmanager
 from threading import Thread
 from test.support import LOOPBACK_TIMEOUT
 from time import time
+from unittest.mock import patch
 
 
 if sys.platform != "android":
@@ -16,6 +19,9 @@
 
 api_level = platform.android_ver().api_level
 
+# (name, level, fileno)
+STREAM_INFO = [("stdout", "I", 1), ("stderr", "W", 2)]
+
 
 # Test redirection of stdout and stderr to the Android log.
 @unittest.skipIf(
@@ -36,7 +42,8 @@ def logcat_thread():
             for line in self.logcat_process.stdout:
                 self.logcat_queue.put(line.rstrip("\n"))
             self.logcat_process.stdout.close()
-        Thread(target=logcat_thread).start()
+        self.logcat_thread = Thread(target=logcat_thread)
+        self.logcat_thread.start()
 
         from ctypes import CDLL, c_char_p, c_int
         android_log_write = getattr(CDLL("liblog.so"), "__android_log_write")
@@ -72,6 +79,7 @@ def assert_log(self, level, tag, expected, *, skip=False, timeout=0.5):
     def tearDown(self):
         self.logcat_process.terminate()
         self.logcat_process.wait(LOOPBACK_TIMEOUT)
+        self.logcat_thread.join(LOOPBACK_TIMEOUT)
 
     @contextmanager
     def unbuffered(self, stream):
@@ -81,22 +89,43 @@ def unbuffered(self, stream):
         finally:
             stream.reconfigure(write_through=False)
 
+    # In --verbose3 mode, sys.stdout and sys.stderr are captured, so we can't
+    # test them directly. Detect this mode and use some temporary streams with
+    # the same properties.
+    def stream_context(self, stream_name, level):
+        # https://developer.android.com/ndk/reference/group/logging
+        prio = {"I": 4, "W": 5}[level]
+
+        stack = ExitStack()
+        stack.enter_context(self.subTest(stream_name))
+        stream = getattr(sys, stream_name)
+        native_stream = getattr(sys, f"__{stream_name}__")
+        if isinstance(stream, io.StringIO):
+            stack.enter_context(
+                patch(
+                    f"sys.{stream_name}",
+                    TextLogStream(
+                        prio, f"python.{stream_name}", native_stream.fileno(),
+                        errors="backslashreplace"
+                    ),
+                )
+            )
+        return stack
+
     def test_str(self):
-        for stream_name, level in [("stdout", "I"), ("stderr", "W")]:
-            with self.subTest(stream=stream_name):
+        for stream_name, level, fileno in STREAM_INFO:
+            with self.stream_context(stream_name, level):
                 stream = getattr(sys, stream_name)
                 tag = f"python.{stream_name}"
                 self.assertEqual(f"<TextLogStream '{tag}'>", repr(stream))
 
-                self.assertTrue(stream.writable())
-                self.assertFalse(stream.readable())
+                self.assertIs(stream.writable(), True)
+                self.assertIs(stream.readable(), False)
+                self.assertEqual(stream.fileno(), fileno)
                 self.assertEqual("UTF-8", stream.encoding)
-                self.assertTrue(stream.line_buffering)
-                self.assertFalse(stream.write_through)
-
-                # stderr is backslashreplace by default; stdout is configured
-                # that way by libregrtest.main.
                 self.assertEqual("backslashreplace", stream.errors)
+                self.assertIs(stream.line_buffering, True)
+                self.assertIs(stream.write_through, False)
 
                 def write(s, lines=None, *, write_len=None):
                     if write_len is None:
@@ -147,6 +176,13 @@ def write(s, lines=None, *, write_len=None):
                 write("f\n\ng", ["exxf", ""])
                 write("\n", ["g"])
 
+                # Since this is a line-based logging system, line buffering
+                # cannot be turned off, i.e. a newline always causes a flush.
+                stream.reconfigure(line_buffering=False)
+                self.assertIs(stream.line_buffering, True)
+
+                # However, buffering can be turned off completely if you want a
+                # flush after every write.
                 with self.unbuffered(stream):
                     write("\nx", ["", "x"])
                     write("\na\n", ["", "a"])
@@ -209,30 +245,31 @@ def __str__(self):
                 # (MAX_BYTES_PER_WRITE).
                 #
                 # ASCII (1 byte per character)
-                write(("foobar" * 700) + "\n",
-                      [("foobar" * 666) + "foob",  # 4000 bytes
-                       "ar" + ("foobar" * 33)])  # 200 bytes
+                write(("foobar" * 700) + "\n",  # 4200 bytes in
+                      [("foobar" * 666) + "foob",  # 4000 bytes out
+                       "ar" + ("foobar" * 33)])  # 200 bytes out
 
                 # "Full-width" digits 0-9 (3 bytes per character)
                 s = "\uff10\uff11\uff12\uff13\uff14\uff15\uff16\uff17\uff18\uff19"
-                write((s * 150) + "\n",
-                      [s * 100,  # 3000 bytes
-                       s * 50])  # 1500 bytes
+                write((s * 150) + "\n",  # 4500 bytes in
+                      [s * 100,  # 3000 bytes out
+                       s * 50])  # 1500 bytes out
 
                 s = "0123456789"
-                write(s * 200, [])
-                write(s * 150, [])
-                write(s * 51, [s * 350])  # 3500 bytes
-                write("\n", [s * 51])  # 510 bytes
+                write(s * 200, [])  # 2000 bytes in
+                write(s * 150, [])  # 1500 bytes in
+                write(s * 51, [s * 350])  # 510 bytes in, 3500 bytes out
+                write("\n", [s * 51])  # 0 bytes in, 510 bytes out
 
     def test_bytes(self):
-        for stream_name, level in [("stdout", "I"), ("stderr", "W")]:
-            with self.subTest(stream=stream_name):
+        for stream_name, level, fileno in STREAM_INFO:
+            with self.stream_context(stream_name, level):
                 stream = getattr(sys, stream_name).buffer
                 tag = f"python.{stream_name}"
                 self.assertEqual(f"<BinaryLogStream '{tag}'>", repr(stream))
-                self.assertTrue(stream.writable())
-                self.assertFalse(stream.readable())
+                self.assertIs(stream.writable(), True)
+                self.assertIs(stream.readable(), False)
+                self.assertEqual(stream.fileno(), fileno)
 
                 def write(b, lines=None, *, write_len=None):
                     if write_len is None:
@@ -330,3 +367,82 @@ def write(b, lines=None, *, write_len=None):
                             fr"{type(obj).__name__}"
                         ):
                             stream.write(obj)
+
+
+class TestAndroidRateLimit(unittest.TestCase):
+    def test_rate_limit(self):
+        # https://cs.android.com/android/platform/superproject/+/android-14.0.0_r1:system/logging/liblog/include/log/log_read.h;l=39
+        PER_MESSAGE_OVERHEAD = 28
+
+        # https://developer.android.com/ndk/reference/group/logging
+        ANDROID_LOG_DEBUG = 3
+
+        # To avoid flooding the test script output, use a different tag rather
+        # than stdout or stderr.
+        tag = "python.rate_limit"
+        stream = TextLogStream(ANDROID_LOG_DEBUG, tag)
+
+        # Make a test message which consumes 1 KB of the logcat buffer.
+        message = "Line {:03d} "
+        message += "." * (
+            1024 - PER_MESSAGE_OVERHEAD - len(tag) - len(message.format(0))
+        ) + "\n"
+
+        # To avoid depending on the performance of the test device, we mock the
+        # passage of time.
+        mock_now = time()
+
+        def mock_time():
+            # Avoid division by zero by simulating a small delay.
+            mock_sleep(0.0001)
+            return mock_now
+
+        def mock_sleep(duration):
+            nonlocal mock_now
+            mock_now += duration
+
+        # See _android_support.py. The default values of these parameters work
+        # well across a wide range of devices, but we'll use smaller values to
+        # ensure a quick and reliable test that doesn't flood the log too much.
+        MAX_KB_PER_SECOND = 100
+        BUCKET_KB = 10
+        with (
+            patch("_android_support.MAX_BYTES_PER_SECOND", MAX_KB_PER_SECOND * 1024),
+            patch("_android_support.BUCKET_SIZE", BUCKET_KB * 1024),
+            patch("_android_support.sleep", mock_sleep),
+            patch("_android_support.time", mock_time),
+        ):
+            # Make sure the token bucket is full.
+            stream.write("Initial message to reset _prev_write_time")
+            mock_sleep(BUCKET_KB / MAX_KB_PER_SECOND)
+            line_num = 0
+
+            # Write BUCKET_KB messages, and return the rate at which they were
+            # accepted in KB per second.
+            def write_bucketful():
+                nonlocal line_num
+                start = mock_time()
+                max_line_num = line_num + BUCKET_KB
+                while line_num < max_line_num:
+                    stream.write(message.format(line_num))
+                    line_num += 1
+                return BUCKET_KB / (mock_time() - start)
+
+            # The first bucketful should be written with minimal delay. The
+            # factor of 2 here is not arbitrary: it verifies that the system can
+            # write fast enough to empty the bucket within two bucketfuls, which
+            # the next part of the test depends on.
+            self.assertGreater(write_bucketful(), MAX_KB_PER_SECOND * 2)
+
+            # Write another bucketful to empty the token bucket completely.
+            write_bucketful()
+
+            # The next bucketful should be written at the rate limit.
+            self.assertAlmostEqual(
+                write_bucketful(), MAX_KB_PER_SECOND,
+                delta=MAX_KB_PER_SECOND * 0.1
+            )
+
+            # Once the token bucket refills, we should go back to full speed.
+            mock_sleep(BUCKET_KB / MAX_KB_PER_SECOND)
+            self.assertGreater(write_bucketful(), MAX_KB_PER_SECOND * 2)
diff --git a/Lib/test/test_apple.py b/Lib/test/test_apple.py
new file mode 100644
index 00000000000000..ab5296afad1d3f
--- /dev/null
+++ b/Lib/test/test_apple.py
@@ -0,0 +1,155 @@
+import unittest
+from _apple_support import SystemLog
+from test.support import is_apple
+from unittest.mock import Mock, call
+
+if not is_apple:
+    raise unittest.SkipTest("Apple-specific")
+
+
+# Test redirection of stdout and stderr to the Apple system log.
+class TestAppleSystemLogOutput(unittest.TestCase):
+    maxDiff = None
+
+    def assert_writes(self, output):
+        self.assertEqual(
+            self.log_write.mock_calls,
+            [
+                call(self.log_level, line)
+                for line in output
+            ]
+        )
+
+        self.log_write.reset_mock()
+
+    def setUp(self):
+        self.log_write = Mock()
+        self.log_level = 42
+        self.log = SystemLog(self.log_write, self.log_level, errors="replace")
+
+    def test_repr(self):
+        self.assertEqual(repr(self.log), "<SystemLog (level 42)>")
+        self.assertEqual(repr(self.log.buffer), "<LogStream (level 42)>")
+
+    def test_log_config(self):
+        self.assertIs(self.log.writable(), True)
+        self.assertIs(self.log.readable(), False)
+
+        self.assertEqual("UTF-8", self.log.encoding)
+        self.assertEqual("replace", self.log.errors)
+
+        self.assertIs(self.log.line_buffering, True)
+        self.assertIs(self.log.write_through, False)
+
+    def test_empty_str(self):
+        self.log.write("")
+        self.log.flush()
+
+        self.assert_writes([])
+
+    def test_simple_str(self):
+        self.log.write("hello world\n")
+
+        self.assert_writes([b"hello world\n"])
+
+    def test_buffered_str(self):
+        self.log.write("h")
+        self.log.write("ello")
+        self.log.write(" ")
+        self.log.write("world\n")
+        self.log.write("goodbye.")
+        self.log.flush()
+
+        self.assert_writes([b"hello world\n", b"goodbye."])
+
+    def test_manual_flush(self):
+        self.log.write("Hello")
+
+        self.assert_writes([])
+
+        self.log.write(" world\nHere for a while...\nGoodbye")
+        self.assert_writes([b"Hello world\n", b"Here for a while...\n"])
+
+        self.log.write(" world\nHello again")
+        self.assert_writes([b"Goodbye world\n"])
+
+        self.log.flush()
+        self.assert_writes([b"Hello again"])
+
+    def test_non_ascii(self):
+        # Spanish
+        self.log.write("ol\u00e9\n")
+        self.assert_writes([b"ol\xc3\xa9\n"])
+
+        # Chinese
+        self.log.write("\u4e2d\u6587\n")
+        self.assert_writes([b"\xe4\xb8\xad\xe6\x96\x87\n"])
+
+        # Printing Non-BMP emoji
+        self.log.write("\U0001f600\n")
+        self.assert_writes([b"\xf0\x9f\x98\x80\n"])
+
+        # Non-encodable surrogates are replaced
+        self.log.write("\ud800\udc00\n")
+        self.assert_writes([b"??\n"])
+
+    def test_modified_null(self):
+        # Null characters are logged using "modified UTF-8".
+        self.log.write("\u0000\n")
+        self.assert_writes([b"\xc0\x80\n"])
+        self.log.write("a\u0000\n")
+        self.assert_writes([b"a\xc0\x80\n"])
+        self.log.write("\u0000b\n")
+        self.assert_writes([b"\xc0\x80b\n"])
+        self.log.write("a\u0000b\n")
+        self.assert_writes([b"a\xc0\x80b\n"])
+
+    def test_nonstandard_str(self):
+        # String subclasses are accepted, but they should be converted
+        # to a standard str without calling any of their methods.
+        class CustomStr(str):
+            def splitlines(self, *args, **kwargs):
+                raise AssertionError()
+
+            def __len__(self):
+                raise AssertionError()
+
+            def __str__(self):
+                raise AssertionError()
+
+        self.log.write(CustomStr("custom\n"))
+        self.assert_writes([b"custom\n"])
+
+    def test_non_str(self):
+        # Non-string classes are not accepted.
+        for obj in [b"", b"hello", None, 42]:
+            with self.subTest(obj=obj):
+                with self.assertRaisesRegex(
+                    TypeError,
+                    fr"write\(\) argument must be str, not "
+                    fr"{type(obj).__name__}"
+                ):
+                    self.log.write(obj)
+
+    def test_byteslike_in_buffer(self):
+        # The underlying buffer *can* accept bytes-like objects
+        self.log.buffer.write(bytearray(b"hello"))
+        self.log.flush()
+
+        self.log.buffer.write(b"")
+        self.log.flush()
+
+        self.log.buffer.write(b"goodbye")
+        self.log.flush()
+
+        self.assert_writes([b"hello", b"goodbye"])
+
+    def test_non_byteslike_in_buffer(self):
+        for obj in ["hello", None, 42]:
+            with self.subTest(obj=obj):
+                with self.assertRaisesRegex(
+                    TypeError,
+                    fr"write\(\) argument must be bytes-like, not "
+                    fr"{type(obj).__name__}"
+                ):
+                    self.log.buffer.write(obj)
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 02b499145f6c43..b7e995334fedb1 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -15,7 +15,10 @@
 import argparse
 import warnings
 
-from test.support import os_helper, captured_stderr
+from enum import StrEnum
+from test.support import captured_stderr
+from test.support import os_helper
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
 from unittest import mock
 
 
@@ -280,16 +283,18 @@ def test_failures(self, tester):
                 parser = self._get_parser(tester)
                 for args_str in tester.failures:
                     args = args_str.split()
-                    with tester.assertRaises(ArgumentParserError, msg=args):
-                        parser.parse_args(args)
+                    with tester.subTest(args=args):
+                        with tester.assertRaises(ArgumentParserError, msg=args):
+                            parser.parse_args(args)
 
             def test_successes(self, tester):
                 parser = self._get_parser(tester)
                 for args, expected_ns in tester.successes:
                     if isinstance(args, str):
                         args = args.split()
-                    result_ns = self._parse_args(parser, args)
-                    tester.assertEqual(expected_ns, result_ns)
+                    with tester.subTest(args=args):
+                        result_ns = self._parse_args(parser, args)
+                        tester.assertEqual(expected_ns, result_ns)
 
         # add tests for each combination of an optionals adding method
         # and an arg parsing method
@@ -378,15 +383,22 @@ class TestOptionalsSingleDashAmbiguous(ParserTestCase):
     """Test Optionals that partially match but are not subsets"""
 
     argument_signatures = [Sig('-foobar'), Sig('-foorab')]
-    failures = ['-f', '-f a', '-fa', '-foa', '-foo', '-fo', '-foo b']
+    failures = ['-f', '-f a', '-fa', '-foa', '-foo', '-fo', '-foo b',
+                '-f=a', '-foo=b']
     successes = [
         ('', NS(foobar=None, foorab=None)),
         ('-foob a', NS(foobar='a', foorab=None)),
+        ('-foob=a', NS(foobar='a', foorab=None)),
         ('-foor a', NS(foobar=None, foorab='a')),
+        ('-foor=a', NS(foobar=None, foorab='a')),
         ('-fooba a', NS(foobar='a', foorab=None)),
+        ('-fooba=a', NS(foobar='a', foorab=None)),
         ('-foora a', NS(foobar=None, foorab='a')),
+        ('-foora=a', NS(foobar=None, foorab='a')),
         ('-foobar a', NS(foobar='a', foorab=None)),
+        ('-foobar=a', NS(foobar='a', foorab=None)),
         ('-foorab a', NS(foobar=None, foorab='a')),
+        ('-foorab=a', NS(foobar=None, foorab='a')),
     ]
 
 
@@ -677,7 +689,7 @@ class TestOptionalsChoices(ParserTestCase):
     argument_signatures = [
         Sig('-f', choices='abc'),
         Sig('-g', type=int, choices=range(5))]
-    failures = ['a', '-f d', '-fad', '-ga', '-g 6']
+    failures = ['a', '-f d', '-f ab', '-fad', '-ga', '-g 6']
     successes = [
         ('', NS(f=None, g=None)),
         ('-f a', NS(f='a', g=None)),
@@ -916,7 +928,9 @@ class TestOptionalsAllowLongAbbreviation(ParserTestCase):
     successes = [
         ('', NS(foo=None, foobaz=None, fooble=False)),
         ('--foo 7', NS(foo='7', foobaz=None, fooble=False)),
+        ('--foo=7', NS(foo='7', foobaz=None, fooble=False)),
         ('--fooba a', NS(foo=None, foobaz='a', fooble=False)),
+        ('--fooba=a', NS(foo=None, foobaz='a', fooble=False)),
         ('--foobl --foo g', NS(foo='g', foobaz=None, fooble=True)),
     ]
 
@@ -955,6 +969,23 @@ class TestOptionalsDisallowLongAbbreviationPrefixChars(ParserTestCase):
     ]
 
 
+class TestOptionalsDisallowSingleDashLongAbbreviation(ParserTestCase):
+    """Do not allow abbreviations of long options at all"""
+
+    parser_signature = Sig(allow_abbrev=False)
+    argument_signatures = [
+        Sig('-foo'),
+        Sig('-foodle', action='store_true'),
+        Sig('-foonly'),
+    ]
+    failures = ['-foon 3', '-food', '-food -foo 2']
+    successes = [
+        ('', NS(foo=None, foodle=False, foonly=None)),
+        ('-foo 3', NS(foo='3', foodle=False, foonly=None)),
+        ('-foonly 7 -foodle -foo 2', NS(foo='2', foodle=True, foonly='7')),
+    ]
+
+
 class TestDisallowLongAbbreviationAllowsShortGrouping(ParserTestCase):
     """Do not allow abbreviations of long options at all"""
 
@@ -993,6 +1024,34 @@ class TestDisallowLongAbbreviationAllowsShortGroupingPrefix(ParserTestCase):
     ]
 
 
+class TestStrEnumChoices(TestCase):
+    class Color(StrEnum):
+        RED = "red"
+        GREEN = "green"
+        BLUE = "blue"
+
+    def test_parse_enum_value(self):
+        parser = argparse.ArgumentParser()
+        parser.add_argument('--color', choices=self.Color)
+        args = parser.parse_args(['--color', 'red'])
+        self.assertEqual(args.color, self.Color.RED)
+
+    def test_help_message_contains_enum_choices(self):
+        parser = argparse.ArgumentParser()
+        parser.add_argument('--color', choices=self.Color, help='Choose a color')
+        self.assertIn('[--color {red,green,blue}]', parser.format_usage())
+        self.assertIn('  --color {red,green,blue}', parser.format_help())
+
+    def test_invalid_enum_value_raises_error(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('--color', choices=self.Color)
+        self.assertRaisesRegex(
+            argparse.ArgumentError,
+            r"invalid choice: 'yellow' \(choose from red, green, blue\)",
+            parser.parse_args,
+            ['--color', 'yellow'],
+        )
+
 # ================
 # Positional tests
 # ================
@@ -1132,57 +1191,87 @@ class TestPositionalsNargs2None(ParserTestCase):
 class TestPositionalsNargsNoneZeroOrMore(ParserTestCase):
     """Test a Positional with no nargs followed by one with unlimited"""
 
-    argument_signatures = [Sig('foo'), Sig('bar', nargs='*')]
-    failures = ['', '--foo']
+    argument_signatures = [Sig('-x'), Sig('foo'), Sig('bar', nargs='*')]
+    failures = ['', '--foo', 'a b -x X c']
     successes = [
-        ('a', NS(foo='a', bar=[])),
-        ('a b', NS(foo='a', bar=['b'])),
-        ('a b c', NS(foo='a', bar=['b', 'c'])),
+        ('a', NS(x=None, foo='a', bar=[])),
+        ('a b', NS(x=None, foo='a', bar=['b'])),
+        ('a b c', NS(x=None, foo='a', bar=['b', 'c'])),
+        ('-x X a', NS(x='X', foo='a', bar=[])),
+        ('a -x X', NS(x='X', foo='a', bar=[])),
+        ('-x X a b', NS(x='X', foo='a', bar=['b'])),
+        ('a -x X b', NS(x='X', foo='a', bar=['b'])),
+        ('a b -x X', NS(x='X', foo='a', bar=['b'])),
+        ('-x X a b c', NS(x='X', foo='a', bar=['b', 'c'])),
+        ('a -x X b c', NS(x='X', foo='a', bar=['b', 'c'])),
+        ('a b c -x X', NS(x='X', foo='a', bar=['b', 'c'])),
     ]
 
 
 class TestPositionalsNargsNoneOneOrMore(ParserTestCase):
     """Test a Positional with no nargs followed by one with one or more"""
 
-    argument_signatures = [Sig('foo'), Sig('bar', nargs='+')]
-    failures = ['', '--foo', 'a']
+    argument_signatures = [Sig('-x'), Sig('foo'), Sig('bar', nargs='+')]
+    failures = ['', '--foo', 'a', 'a b -x X c']
     successes = [
-        ('a b', NS(foo='a', bar=['b'])),
-        ('a b c', NS(foo='a', bar=['b', 'c'])),
+        ('a b', NS(x=None, foo='a', bar=['b'])),
+        ('a b c', NS(x=None, foo='a', bar=['b', 'c'])),
+        ('-x X a b', NS(x='X', foo='a', bar=['b'])),
+        ('a -x X b', NS(x='X', foo='a', bar=['b'])),
+        ('a b -x X', NS(x='X', foo='a', bar=['b'])),
+        ('-x X a b c', NS(x='X', foo='a', bar=['b', 'c'])),
+        ('a -x X b c', NS(x='X', foo='a', bar=['b', 'c'])),
+        ('a b c -x X', NS(x='X', foo='a', bar=['b', 'c'])),
     ]
 
 
 class TestPositionalsNargsNoneOptional(ParserTestCase):
     """Test a Positional with no nargs followed by one with an Optional"""
 
-    argument_signatures = [Sig('foo'), Sig('bar', nargs='?')]
+    argument_signatures = [Sig('-x'), Sig('foo'), Sig('bar', nargs='?')]
     failures = ['', '--foo', 'a b c']
     successes = [
-        ('a', NS(foo='a', bar=None)),
-        ('a b', NS(foo='a', bar='b')),
+        ('a', NS(x=None, foo='a', bar=None)),
+        ('a b', NS(x=None, foo='a', bar='b')),
+        ('-x X a', NS(x='X', foo='a', bar=None)),
+        ('a -x X', NS(x='X', foo='a', bar=None)),
+        ('-x X a b', NS(x='X', foo='a', bar='b')),
+        ('a -x X b', NS(x='X', foo='a', bar='b')),
+        ('a b -x X', NS(x='X', foo='a', bar='b')),
     ]
 
 
 class TestPositionalsNargsZeroOrMoreNone(ParserTestCase):
     """Test a Positional with unlimited nargs followed by one with none"""
 
-    argument_signatures = [Sig('foo', nargs='*'), Sig('bar')]
-    failures = ['', '--foo']
+    argument_signatures = [Sig('-x'), Sig('foo', nargs='*'), Sig('bar')]
+    failures = ['', '--foo', 'a -x X b', 'a -x X b c', 'a b -x X c']
     successes = [
-        ('a', NS(foo=[], bar='a')),
-        ('a b', NS(foo=['a'], bar='b')),
-        ('a b c', NS(foo=['a', 'b'], bar='c')),
+        ('a', NS(x=None, foo=[], bar='a')),
+        ('a b', NS(x=None, foo=['a'], bar='b')),
+        ('a b c', NS(x=None, foo=['a', 'b'], bar='c')),
+        ('-x X a', NS(x='X', foo=[], bar='a')),
+        ('a -x X', NS(x='X', foo=[], bar='a')),
+        ('-x X a b', NS(x='X', foo=['a'], bar='b')),
+        ('a b -x X', NS(x='X', foo=['a'], bar='b')),
+        ('-x X a b c', NS(x='X', foo=['a', 'b'], bar='c')),
+        ('a b c -x X', NS(x='X', foo=['a', 'b'], bar='c')),
     ]
 
 
 class TestPositionalsNargsOneOrMoreNone(ParserTestCase):
     """Test a Positional with one or more nargs followed by one with none"""
 
-    argument_signatures = [Sig('foo', nargs='+'), Sig('bar')]
-    failures = ['', '--foo', 'a']
+    argument_signatures = [Sig('-x'), Sig('foo', nargs='+'), Sig('bar')]
+    failures = ['', '--foo', 'a', 'a -x X b c', 'a b -x X c']
     successes = [
-        ('a b', NS(foo=['a'], bar='b')),
-        ('a b c', NS(foo=['a', 'b'], bar='c')),
+        ('a b', NS(x=None, foo=['a'], bar='b')),
+        ('a b c', NS(x=None, foo=['a', 'b'], bar='c')),
+        ('-x X a b', NS(x='X', foo=['a'], bar='b')),
+        ('a -x X b', NS(x='X', foo=['a'], bar='b')),
+        ('a b -x X', NS(x='X', foo=['a'], bar='b')),
+        ('-x X a b c', NS(x='X', foo=['a', 'b'], bar='c')),
+        ('a b c -x X', NS(x='X', foo=['a', 'b'], bar='c')),
     ]
 
 
@@ -1267,14 +1356,21 @@ class TestPositionalsNargsNoneZeroOrMore1(ParserTestCase):
     """Test three Positionals: no nargs, unlimited nargs and 1 nargs"""
 
     argument_signatures = [
+        Sig('-x'),
         Sig('foo'),
         Sig('bar', nargs='*'),
         Sig('baz', nargs=1),
     ]
-    failures = ['', '--foo', 'a']
+    failures = ['', '--foo', 'a', 'a b -x X c']
     successes = [
-        ('a b', NS(foo='a', bar=[], baz=['b'])),
-        ('a b c', NS(foo='a', bar=['b'], baz=['c'])),
+        ('a b', NS(x=None, foo='a', bar=[], baz=['b'])),
+        ('a b c', NS(x=None, foo='a', bar=['b'], baz=['c'])),
+        ('-x X a b', NS(x='X', foo='a', bar=[], baz=['b'])),
+        ('a -x X b', NS(x='X', foo='a', bar=[], baz=['b'])),
+        ('a b -x X', NS(x='X', foo='a', bar=[], baz=['b'])),
+        ('-x X a b c', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('a -x X b c', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('a b c -x X', NS(x='X', foo='a', bar=['b'], baz=['c'])),
     ]
 
 
@@ -1282,14 +1378,22 @@ class TestPositionalsNargsNoneOneOrMore1(ParserTestCase):
     """Test three Positionals: no nargs, one or more nargs and 1 nargs"""
 
     argument_signatures = [
+        Sig('-x'),
         Sig('foo'),
         Sig('bar', nargs='+'),
         Sig('baz', nargs=1),
     ]
-    failures = ['', '--foo', 'a', 'b']
+    failures = ['', '--foo', 'a', 'b', 'a b -x X c d', 'a b c -x X d']
     successes = [
-        ('a b c', NS(foo='a', bar=['b'], baz=['c'])),
-        ('a b c d', NS(foo='a', bar=['b', 'c'], baz=['d'])),
+        ('a b c', NS(x=None, foo='a', bar=['b'], baz=['c'])),
+        ('a b c d', NS(x=None, foo='a', bar=['b', 'c'], baz=['d'])),
+        ('-x X a b c', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('a -x X b c', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('a b -x X c', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('a b c -x X', NS(x='X', foo='a', bar=['b'], baz=['c'])),
+        ('-x X a b c d', NS(x='X', foo='a', bar=['b', 'c'], baz=['d'])),
+        ('a -x X b c d', NS(x='X', foo='a', bar=['b', 'c'], baz=['d'])),
+        ('a b c d -x X', NS(x='X', foo='a', bar=['b', 'c'], baz=['d'])),
     ]
 
 
@@ -1297,14 +1401,21 @@ class TestPositionalsNargsNoneOptional1(ParserTestCase):
     """Test three Positionals: no nargs, optional narg and 1 nargs"""
 
     argument_signatures = [
+        Sig('-x'),
         Sig('foo'),
         Sig('bar', nargs='?', default=0.625),
         Sig('baz', nargs=1),
     ]
-    failures = ['', '--foo', 'a']
+    failures = ['', '--foo', 'a', 'a b -x X c']
     successes = [
-        ('a b', NS(foo='a', bar=0.625, baz=['b'])),
-        ('a b c', NS(foo='a', bar='b', baz=['c'])),
+        ('a b', NS(x=None, foo='a', bar=0.625, baz=['b'])),
+        ('a b c', NS(x=None, foo='a', bar='b', baz=['c'])),
+        ('-x X a b', NS(x='X', foo='a', bar=0.625, baz=['b'])),
+        ('a -x X b', NS(x='X', foo='a', bar=0.625, baz=['b'])),
+        ('a b -x X', NS(x='X', foo='a', bar=0.625, baz=['b'])),
+        ('-x X a b c', NS(x='X', foo='a', bar='b', baz=['c'])),
+        ('a -x X b c', NS(x='X', foo='a', bar='b', baz=['c'])),
+        ('a b c -x X', NS(x='X', foo='a', bar='b', baz=['c'])),
     ]
 
 
@@ -1520,6 +1631,9 @@ class TestNargsRemainder(ParserTestCase):
     successes = [
         ('X', NS(x='X', y=[], z=None)),
         ('-z Z X', NS(x='X', y=[], z='Z')),
+        ('-z Z X A B', NS(x='X', y=['A', 'B'], z='Z')),
+        ('X -z Z A B', NS(x='X', y=['-z', 'Z', 'A', 'B'], z=None)),
+        ('X A -z Z B', NS(x='X', y=['A', '-z', 'Z', 'B'], z=None)),
         ('X A B -z Z', NS(x='X', y=['A', 'B', '-z', 'Z'], z=None)),
         ('X Y --foo', NS(x='X', y=['Y', '--foo'], z=None)),
     ]
@@ -1556,18 +1670,24 @@ class TestDefaultSuppress(ParserTestCase):
     """Test actions with suppressed defaults"""
 
     argument_signatures = [
-        Sig('foo', nargs='?', default=argparse.SUPPRESS),
-        Sig('bar', nargs='*', default=argparse.SUPPRESS),
+        Sig('foo', nargs='?', type=int, default=argparse.SUPPRESS),
+        Sig('bar', nargs='*', type=int, default=argparse.SUPPRESS),
         Sig('--baz', action='store_true', default=argparse.SUPPRESS),
+        Sig('--qux', nargs='?', type=int, default=argparse.SUPPRESS),
+        Sig('--quux', nargs='*', type=int, default=argparse.SUPPRESS),
     ]
-    failures = ['-x']
+    failures = ['-x', 'a', '1 a']
     successes = [
         ('', NS()),
-        ('a', NS(foo='a')),
-        ('a b', NS(foo='a', bar=['b'])),
+        ('1', NS(foo=1)),
+        ('1 2', NS(foo=1, bar=[2])),
         ('--baz', NS(baz=True)),
-        ('a --baz', NS(foo='a', baz=True)),
-        ('--baz a b', NS(foo='a', bar=['b'], baz=True)),
+        ('1 --baz', NS(foo=1, baz=True)),
+        ('--baz 1 2', NS(foo=1, bar=[2], baz=True)),
+        ('--qux', NS(qux=None)),
+        ('--qux 1', NS(qux=1)),
+        ('--quux', NS(quux=[])),
+        ('--quux 1 2', NS(quux=[1, 2])),
     ]
 
 
@@ -2190,7 +2310,9 @@ def _get_parser(self, subparser_help=False, prefix_chars=None,
         else:
             subparsers_kwargs['help'] = 'command help'
         subparsers = parser.add_subparsers(**subparsers_kwargs)
-        self.assertArgumentParserError(parser.add_subparsers)
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'cannot have multiple subparser arguments',
+                               parser.add_subparsers)
 
         # add first sub-parser
         parser1_kwargs = dict(description='1 description')
@@ -2200,14 +2322,14 @@ def _get_parser(self, subparser_help=False, prefix_chars=None,
             parser1_kwargs['aliases'] = ['1alias1', '1alias2']
         parser1 = subparsers.add_parser('1', **parser1_kwargs)
         parser1.add_argument('-w', type=int, help='w help')
-        parser1.add_argument('x', choices='abc', help='x help')
+        parser1.add_argument('x', choices=['a', 'b', 'c'], help='x help')
 
         # add second sub-parser
         parser2_kwargs = dict(description='2 description')
         if subparser_help:
             parser2_kwargs['help'] = '2 help'
         parser2 = subparsers.add_parser('2', **parser2_kwargs)
-        parser2.add_argument('-y', choices='123', help='y help')
+        parser2.add_argument('-y', choices=['1', '2', '3'], help='y help')
         parser2.add_argument('z', type=complex, nargs='*', help='z help')
 
         # add third sub-parser
@@ -2274,6 +2396,40 @@ def test_parse_known_args(self):
             (NS(foo=False, bar=0.5, w=7, x='b'), ['-W', '-X', 'Y', 'Z']),
         )
 
+    def test_parse_known_args_to_class_namespace(self):
+        class C:
+            pass
+        self.assertEqual(
+            self.parser.parse_known_args('0.5 1 b -w 7 -p'.split(), namespace=C),
+            (C, ['-p']),
+        )
+        self.assertIs(C.foo, False)
+        self.assertEqual(C.bar, 0.5)
+        self.assertEqual(C.w, 7)
+        self.assertEqual(C.x, 'b')
+
+    def test_abbreviation(self):
+        parser = ErrorRaisingArgumentParser()
+        parser.add_argument('--foodle')
+        parser.add_argument('--foonly')
+        subparsers = parser.add_subparsers()
+        parser1 = subparsers.add_parser('bar')
+        parser1.add_argument('--fo')
+        parser1.add_argument('--foonew')
+
+        self.assertEqual(parser.parse_args(['--food', 'baz', 'bar']),
+                         NS(foodle='baz', foonly=None, fo=None, foonew=None))
+        self.assertEqual(parser.parse_args(['--foon', 'baz', 'bar']),
+                         NS(foodle=None, foonly='baz', fo=None, foonew=None))
+        self.assertArgumentParserError(parser.parse_args, ['--fo', 'baz', 'bar'])
+        self.assertEqual(parser.parse_args(['bar', '--fo', 'baz']),
+                         NS(foodle=None, foonly=None, fo='baz', foonew=None))
+        self.assertEqual(parser.parse_args(['bar', '--foo', 'baz']),
+                         NS(foodle=None, foonly=None, fo=None, foonew='baz'))
+        self.assertEqual(parser.parse_args(['bar', '--foon', 'baz']),
+                         NS(foodle=None, foonly=None, fo=None, foonew='baz'))
+        self.assertArgumentParserError(parser.parse_args, ['bar', '--food', 'baz'])
+
     def test_parse_known_args_with_single_dash_option(self):
         parser = ErrorRaisingArgumentParser()
         parser.add_argument('-k', '--known', action='count', default=0)
@@ -2361,7 +2517,7 @@ def test_wrong_argument_subparsers_no_destination_error(self):
             parser.parse_args(('baz',))
         self.assertRegex(
             excinfo.exception.stderr,
-            r"error: argument {foo,bar}: invalid choice: 'baz' \(choose from 'foo', 'bar'\)\n$"
+            r"error: argument {foo,bar}: invalid choice: 'baz' \(choose from foo, bar\)\n$"
         )
 
     def test_optional_subparsers(self):
@@ -2822,6 +2978,35 @@ def test_groups_parents(self):
     def test_wrong_type_parents(self):
         self.assertRaises(TypeError, ErrorRaisingArgumentParser, parents=[1])
 
+    def test_mutex_groups_parents(self):
+        parent = ErrorRaisingArgumentParser(add_help=False)
+        g = parent.add_argument_group(title='g', description='gd')
+        g.add_argument('-w')
+        g.add_argument('-x')
+        m = g.add_mutually_exclusive_group()
+        m.add_argument('-y')
+        m.add_argument('-z')
+        parser = ErrorRaisingArgumentParser(prog='PROG', parents=[parent])
+
+        self.assertRaises(ArgumentParserError, parser.parse_args,
+            ['-y', 'Y', '-z', 'Z'])
+
+        parser_help = parser.format_help()
+        self.assertEqual(parser_help, textwrap.dedent('''\
+            usage: PROG [-h] [-w W] [-x X] [-y Y | -z Z]
+
+            options:
+              -h, --help  show this help message and exit
+
+            g:
+              gd
+
+              -w W
+              -x X
+              -y Y
+              -z Z
+        '''))
+
 # ==============================
 # Mutually exclusive group tests
 # ==============================
@@ -2898,26 +3083,30 @@ def test_failures_when_not_required(self):
         parse_args = self.get_parser(required=False).parse_args
         error = ArgumentParserError
         for args_string in self.failures:
-            self.assertRaises(error, parse_args, args_string.split())
+            with self.subTest(args=args_string):
+                self.assertRaises(error, parse_args, args_string.split())
 
     def test_failures_when_required(self):
         parse_args = self.get_parser(required=True).parse_args
         error = ArgumentParserError
         for args_string in self.failures + ['']:
-            self.assertRaises(error, parse_args, args_string.split())
+            with self.subTest(args=args_string):
+                self.assertRaises(error, parse_args, args_string.split())
 
     def test_successes_when_not_required(self):
         parse_args = self.get_parser(required=False).parse_args
         successes = self.successes + self.successes_when_not_required
         for args_string, expected_ns in successes:
-            actual_ns = parse_args(args_string.split())
-            self.assertEqual(actual_ns, expected_ns)
+            with self.subTest(args=args_string):
+                actual_ns = parse_args(args_string.split())
+                self.assertEqual(actual_ns, expected_ns)
 
     def test_successes_when_required(self):
         parse_args = self.get_parser(required=True).parse_args
         for args_string, expected_ns in self.successes:
-            actual_ns = parse_args(args_string.split())
-            self.assertEqual(actual_ns, expected_ns)
+            with self.subTest(args=args_string):
+                actual_ns = parse_args(args_string.split())
+                self.assertEqual(actual_ns, expected_ns)
 
     def test_usage_when_not_required(self):
         format_usage = self.get_parser(required=False).format_usage
@@ -3000,12 +3189,12 @@ def get_parser(self, required=None):
     ]
 
     usage_when_not_required = '''\
-    usage: PROG [-h] [--abcde ABCDE] [--fghij FGHIJ]
-                [--klmno KLMNO | --pqrst PQRST]
+    usage: PROG [-h] [--abcde ABCDE] [--fghij FGHIJ] [--klmno KLMNO |
+                --pqrst PQRST]
     '''
     usage_when_required = '''\
-    usage: PROG [-h] [--abcde ABCDE] [--fghij FGHIJ]
-                (--klmno KLMNO | --pqrst PQRST)
+    usage: PROG [-h] [--abcde ABCDE] [--fghij FGHIJ] (--klmno KLMNO |
+                --pqrst PQRST)
     '''
     help = '''\
 
@@ -3094,7 +3283,7 @@ def get_parser(self, required):
         group = parser.add_mutually_exclusive_group(required=required)
         group.add_argument('--foo', action='store_true', help='FOO')
         group.add_argument('--spam', help='SPAM')
-        group.add_argument('badger', nargs='*', default='X', help='BADGER')
+        group.add_argument('badger', nargs='*', help='BADGER')
         return parser
 
     failures = [
@@ -3105,13 +3294,13 @@ def get_parser(self, required):
         '--foo X Y',
     ]
     successes = [
-        ('--foo', NS(foo=True, spam=None, badger='X')),
-        ('--spam S', NS(foo=False, spam='S', badger='X')),
+        ('--foo', NS(foo=True, spam=None, badger=[])),
+        ('--spam S', NS(foo=False, spam='S', badger=[])),
         ('X', NS(foo=False, spam=None, badger=['X'])),
         ('X Y Z', NS(foo=False, spam=None, badger=['X', 'Y', 'Z'])),
     ]
     successes_when_not_required = [
-        ('', NS(foo=False, spam=None, badger='X')),
+        ('', NS(foo=False, spam=None, badger=[])),
     ]
 
     usage_when_not_required = '''\
@@ -3304,6 +3493,111 @@ def get_parser(self, required):
     test_successes_when_not_required = None
     test_successes_when_required = None
 
+
+class TestMutuallyExclusiveOptionalOptional(MEMixin, TestCase):
+    def get_parser(self, required=None):
+        parser = ErrorRaisingArgumentParser(prog='PROG')
+        group = parser.add_mutually_exclusive_group(required=required)
+        group.add_argument('--foo')
+        group.add_argument('--bar', nargs='?')
+        return parser
+
+    failures = [
+        '--foo X --bar Y',
+        '--foo X --bar',
+    ]
+    successes = [
+        ('--foo X', NS(foo='X', bar=None)),
+        ('--bar X', NS(foo=None, bar='X')),
+        ('--bar', NS(foo=None, bar=None)),
+    ]
+    successes_when_not_required = [
+        ('', NS(foo=None, bar=None)),
+    ]
+    usage_when_required = '''\
+        usage: PROG [-h] (--foo FOO | --bar [BAR])
+        '''
+    usage_when_not_required = '''\
+        usage: PROG [-h] [--foo FOO | --bar [BAR]]
+        '''
+    help = '''\
+
+        options:
+          -h, --help   show this help message and exit
+          --foo FOO
+          --bar [BAR]
+        '''
+
+
+class TestMutuallyExclusiveOptionalWithDefault(MEMixin, TestCase):
+    def get_parser(self, required=None):
+        parser = ErrorRaisingArgumentParser(prog='PROG')
+        group = parser.add_mutually_exclusive_group(required=required)
+        group.add_argument('--foo')
+        group.add_argument('--bar', type=bool, default=True)
+        return parser
+
+    failures = [
+        '--foo X --bar Y',
+        '--foo X --bar=',
+    ]
+    successes = [
+        ('--foo X', NS(foo='X', bar=True)),
+        ('--bar X', NS(foo=None, bar=True)),
+        ('--bar=', NS(foo=None, bar=False)),
+    ]
+    successes_when_not_required = [
+        ('', NS(foo=None, bar=True)),
+    ]
+    usage_when_required = '''\
+        usage: PROG [-h] (--foo FOO | --bar BAR)
+        '''
+    usage_when_not_required = '''\
+        usage: PROG [-h] [--foo FOO | --bar BAR]
+        '''
+    help = '''\
+
+        options:
+          -h, --help  show this help message and exit
+          --foo FOO
+          --bar BAR
+        '''
+
+
+class TestMutuallyExclusivePositionalWithDefault(MEMixin, TestCase):
+    def get_parser(self, required=None):
+        parser = ErrorRaisingArgumentParser(prog='PROG')
+        group = parser.add_mutually_exclusive_group(required=required)
+        group.add_argument('--foo')
+        group.add_argument('bar', nargs='?', type=bool, default=True)
+        return parser
+
+    failures = [
+        '--foo X Y',
+    ]
+    successes = [
+        ('--foo X', NS(foo='X', bar=True)),
+        ('X', NS(foo=None, bar=True)),
+    ]
+    successes_when_not_required = [
+        ('', NS(foo=None, bar=True)),
+    ]
+    usage_when_required = '''\
+        usage: PROG [-h] (--foo FOO | bar)
+        '''
+    usage_when_not_required = '''\
+        usage: PROG [-h] [--foo FOO | bar]
+        '''
+    help = '''\
+
+        positional arguments:
+          bar
+
+        options:
+          -h, --help  show this help message and exit
+          --foo FOO
+        '''
+
 # =================================================
 # Mutually exclusive group in parent parser tests
 # =================================================
@@ -4388,6 +4682,24 @@ def test_nested_mutex_groups(self):
         ''')
         self.assertEqual(parser.format_usage(), usage)
 
+    def test_long_mutex_groups_wrap(self):
+        parser = argparse.ArgumentParser(prog='PROG')
+        g = parser.add_mutually_exclusive_group()
+        g.add_argument('--op1', metavar='MET', nargs='?')
+        g.add_argument('--op2', metavar=('MET1', 'MET2'), nargs='*')
+        g.add_argument('--op3', nargs='*')
+        g.add_argument('--op4', metavar=('MET1', 'MET2'), nargs='+')
+        g.add_argument('--op5', nargs='+')
+        g.add_argument('--op6', nargs=3)
+        g.add_argument('--op7', metavar=('MET1', 'MET2', 'MET3'), nargs=3)
+
+        usage = textwrap.dedent('''\
+        usage: PROG [-h] [--op1 [MET] | --op2 [MET1 [MET2 ...]] | --op3 [OP3 ...] |
+                    --op4 MET1 [MET2 ...] | --op5 OP5 [OP5 ...] | --op6 OP6 OP6 OP6 |
+                    --op7 MET1 MET2 MET3]
+        ''')
+        self.assertEqual(parser.format_usage(), usage)
+
 
 class TestHelpVariableExpansion(HelpTestCase):
     """Test that variables are expanded properly in help messages"""
@@ -4398,7 +4710,7 @@ class TestHelpVariableExpansion(HelpTestCase):
             help='x %(prog)s %(default)s %(type)s %%'),
         Sig('-y', action='store_const', default=42, const='XXX',
             help='y %(prog)s %(default)s %(const)s'),
-        Sig('--foo', choices='abc',
+        Sig('--foo', choices=['a', 'b', 'c'],
             help='foo %(prog)s %(default)s %(choices)s'),
         Sig('--bar', default='baz', choices=[1, 2], metavar='BBB',
             help='bar %(prog)s %(default)s %(dest)s'),
@@ -4641,7 +4953,7 @@ class TestHelpNone(HelpTestCase):
     version = ''
 
 
-class TestHelpTupleMetavar(HelpTestCase):
+class TestHelpTupleMetavarOptional(HelpTestCase):
     """Test specifying metavar as a tuple"""
 
     parser_signature = Sig(prog='PROG')
@@ -4668,6 +4980,34 @@ class TestHelpTupleMetavar(HelpTestCase):
     version = ''
 
 
+class TestHelpTupleMetavarPositional(HelpTestCase):
+    """Test specifying metavar on a Positional as a tuple"""
+
+    parser_signature = Sig(prog='PROG')
+    argument_signatures = [
+        Sig('w', help='w help', nargs='+', metavar=('W1', 'W2')),
+        Sig('x', help='x help', nargs='*', metavar=('X1', 'X2')),
+        Sig('y', help='y help', nargs=3, metavar=('Y1', 'Y2', 'Y3')),
+        Sig('z', help='z help', nargs='?', metavar=('Z1',)),
+    ]
+    argument_group_signatures = []
+    usage = '''\
+        usage: PROG [-h] W1 [W2 ...] [X1 [X2 ...]] Y1 Y2 Y3 [Z1]
+        '''
+    help = usage + '''\
+
+        positional arguments:
+          W1 W2       w help
+          X1 X2       x help
+          Y1 Y2 Y3    y help
+          Z1          z help
+
+        options:
+          -h, --help  show this help message and exit
+        '''
+    version = ''
+
+
 class TestHelpRawText(HelpTestCase):
     """Test the RawTextHelpFormatter"""
 
@@ -4961,6 +5301,46 @@ def custom_type(string):
     version = ''
 
 
+class TestHelpUsageLongSubparserCommand(TestCase):
+    """Test that subparser commands are formatted correctly in help"""
+    maxDiff = None
+
+    def test_parent_help(self):
+        def custom_formatter(prog):
+            return argparse.RawTextHelpFormatter(prog, max_help_position=50)
+
+        parent_parser = argparse.ArgumentParser(
+                prog='PROG',
+                formatter_class=custom_formatter
+        )
+
+        cmd_subparsers = parent_parser.add_subparsers(title="commands",
+                                                      metavar='CMD',
+                                                      help='command to use')
+        cmd_subparsers.add_parser("add",
+                                  help="add something")
+
+        cmd_subparsers.add_parser("remove",
+                                  help="remove something")
+
+        cmd_subparsers.add_parser("a-very-long-command",
+                                  help="command that does something")
+
+        parser_help = parent_parser.format_help()
+        self.assertEqual(parser_help, textwrap.dedent('''\
+            usage: PROG [-h] CMD ...
+
+            options:
+              -h, --help             show this help message and exit
+
+            commands:
+              CMD                    command to use
+                add                  add something
+                remove               remove something
+                a-very-long-command  command that does something
+        '''))
+
+
 # =====================================
 # Optional/Positional constructor tests
 # =====================================
@@ -4968,15 +5348,15 @@ def custom_type(string):
 class TestInvalidArgumentConstructors(TestCase):
     """Test a bunch of invalid Argument constructors"""
 
-    def assertTypeError(self, *args, **kwargs):
+    def assertTypeError(self, *args, errmsg=None, **kwargs):
         parser = argparse.ArgumentParser()
-        self.assertRaises(TypeError, parser.add_argument,
-                          *args, **kwargs)
+        self.assertRaisesRegex(TypeError, errmsg, parser.add_argument,
+                               *args, **kwargs)
 
-    def assertValueError(self, *args, **kwargs):
+    def assertValueError(self, *args, errmsg=None, **kwargs):
         parser = argparse.ArgumentParser()
-        self.assertRaises(ValueError, parser.add_argument,
-                          *args, **kwargs)
+        self.assertRaisesRegex(ValueError, errmsg, parser.add_argument,
+                               *args, **kwargs)
 
     def test_invalid_keyword_arguments(self):
         self.assertTypeError('-x', bar=None)
@@ -4986,8 +5366,9 @@ def test_invalid_keyword_arguments(self):
 
     def test_missing_destination(self):
         self.assertTypeError()
-        for action in ['append', 'store']:
-            self.assertTypeError(action=action)
+        for action in ['store', 'append', 'extend']:
+            with self.subTest(action=action):
+                self.assertTypeError(action=action)
 
     def test_invalid_option_strings(self):
         self.assertValueError('--')
@@ -5004,10 +5385,8 @@ def test_invalid_action(self):
         self.assertValueError('-x', action='foo')
         self.assertValueError('foo', action='baz')
         self.assertValueError('--foo', action=('store', 'append'))
-        parser = argparse.ArgumentParser()
-        with self.assertRaises(ValueError) as cm:
-            parser.add_argument("--foo", action="store-true")
-        self.assertIn('unknown action', str(cm.exception))
+        self.assertValueError('--foo', action="store-true",
+                              errmsg='unknown action')
 
     def test_multiple_dest(self):
         parser = argparse.ArgumentParser()
@@ -5020,39 +5399,47 @@ def test_multiple_dest(self):
     def test_no_argument_actions(self):
         for action in ['store_const', 'store_true', 'store_false',
                        'append_const', 'count']:
-            for attrs in [dict(type=int), dict(nargs='+'),
-                          dict(choices='ab')]:
-                self.assertTypeError('-x', action=action, **attrs)
+            with self.subTest(action=action):
+                for attrs in [dict(type=int), dict(nargs='+'),
+                              dict(choices=['a', 'b'])]:
+                    with self.subTest(attrs=attrs):
+                        self.assertTypeError('-x', action=action, **attrs)
+                        self.assertTypeError('x', action=action, **attrs)
+                self.assertTypeError('-x', action=action, nargs=0)
+                self.assertTypeError('x', action=action, nargs=0)
 
     def test_no_argument_no_const_actions(self):
         # options with zero arguments
         for action in ['store_true', 'store_false', 'count']:
+            with self.subTest(action=action):
+                # const is always disallowed
+                self.assertTypeError('-x', const='foo', action=action)
 
-            # const is always disallowed
-            self.assertTypeError('-x', const='foo', action=action)
-
-            # nargs is always disallowed
-            self.assertTypeError('-x', nargs='*', action=action)
+                # nargs is always disallowed
+                self.assertTypeError('-x', nargs='*', action=action)
 
     def test_more_than_one_argument_actions(self):
-        for action in ['store', 'append']:
-
-            # nargs=0 is disallowed
-            self.assertValueError('-x', nargs=0, action=action)
-            self.assertValueError('spam', nargs=0, action=action)
-
-            # const is disallowed with non-optional arguments
-            for nargs in [1, '*', '+']:
-                self.assertValueError('-x', const='foo',
-                                      nargs=nargs, action=action)
-                self.assertValueError('spam', const='foo',
-                                      nargs=nargs, action=action)
+        for action in ['store', 'append', 'extend']:
+            with self.subTest(action=action):
+                # nargs=0 is disallowed
+                action_name = 'append' if action == 'extend' else action
+                self.assertValueError('-x', nargs=0, action=action,
+                    errmsg=f'nargs for {action_name} actions must be != 0')
+                self.assertValueError('spam', nargs=0, action=action,
+                    errmsg=f'nargs for {action_name} actions must be != 0')
+
+                # const is disallowed with non-optional arguments
+                for nargs in [1, '*', '+']:
+                    self.assertValueError('-x', const='foo',
+                                          nargs=nargs, action=action)
+                    self.assertValueError('spam', const='foo',
+                                          nargs=nargs, action=action)
 
     def test_required_const_actions(self):
         for action in ['store_const', 'append_const']:
-
-            # nargs is always disallowed
-            self.assertTypeError('-x', nargs='+', action=action)
+            with self.subTest(action=action):
+                # nargs is always disallowed
+                self.assertTypeError('-x', nargs='+', action=action)
 
     def test_parsers_action_missing_params(self):
         self.assertTypeError('command', action='parsers')
@@ -5723,8 +6110,34 @@ def test_zero_or_more_optional(self):
         args = parser.parse_args([])
         self.assertEqual(NS(x=[]), args)
 
-    def test_double_dash(self):
-        parser = argparse.ArgumentParser()
+
+class TestDoubleDash(TestCase):
+    def test_single_argument_option(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('-f', '--foo')
+        parser.add_argument('bar', nargs='*')
+
+        args = parser.parse_args(['--foo=--'])
+        self.assertEqual(NS(foo='--', bar=[]), args)
+        self.assertRaisesRegex(argparse.ArgumentError,
+            'argument -f/--foo: expected one argument',
+            parser.parse_args, ['--foo', '--'])
+        args = parser.parse_args(['-f--'])
+        self.assertEqual(NS(foo='--', bar=[]), args)
+        self.assertRaisesRegex(argparse.ArgumentError,
+            'argument -f/--foo: expected one argument',
+            parser.parse_args, ['-f', '--'])
+        args = parser.parse_args(['--foo', 'a', '--', 'b', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', 'b', '--foo', 'c'])
+        self.assertEqual(NS(foo='c', bar=['a', 'b']), args)
+        args = parser.parse_args(['a', '--', 'b', '--foo', 'c'])
+        self.assertEqual(NS(foo=None, bar=['a', 'b', '--foo', 'c']), args)
+        args = parser.parse_args(['a', '--', 'b', '--', 'c', '--foo', 'd'])
+        self.assertEqual(NS(foo=None, bar=['a', 'b', '--', 'c', '--foo', 'd']), args)
+
+    def test_multiple_argument_option(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
         parser.add_argument('-f', '--foo', nargs='*')
         parser.add_argument('bar', nargs='*')
 
@@ -5738,6 +6151,91 @@ def test_double_dash(self):
         self.assertEqual(NS(foo=[], bar=[]), args)
         args = parser.parse_args(['--foo', 'a', 'b', '--', 'c', 'd'])
         self.assertEqual(NS(foo=['a', 'b'], bar=['c', 'd']), args)
+        args = parser.parse_args(['a', 'b', '--foo', 'c', 'd'])
+        self.assertEqual(NS(foo=['c', 'd'], bar=['a', 'b']), args)
+        args = parser.parse_args(['a', '--', 'b', '--foo', 'c', 'd'])
+        self.assertEqual(NS(foo=None, bar=['a', 'b', '--foo', 'c', 'd']), args)
+        args, argv = parser.parse_known_args(['a', 'b', '--foo', 'c', '--', 'd'])
+        self.assertEqual(NS(foo=['c'], bar=['a', 'b']), args)
+        self.assertEqual(argv, ['--', 'd'])
+
+    def test_multiple_double_dashes(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('foo')
+        parser.add_argument('bar', nargs='*')
+
+        args = parser.parse_args(['--', 'a', 'b', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', '--', 'b', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', 'b', '--', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', '--', 'b', '--', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', '--', 'c']), args)
+        args = parser.parse_args(['--', '--', 'a', '--', 'b', 'c'])
+        self.assertEqual(NS(foo='--', bar=['a', '--', 'b', 'c']), args)
+
+    def test_remainder(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('foo')
+        parser.add_argument('bar', nargs='...')
+
+        args = parser.parse_args(['--', 'a', 'b', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', '--', 'b', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', 'c']), args)
+        args = parser.parse_args(['a', 'b', '--', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', '--', 'c']), args)
+        args = parser.parse_args(['a', '--', 'b', '--', 'c'])
+        self.assertEqual(NS(foo='a', bar=['b', '--', 'c']), args)
+
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('--foo')
+        parser.add_argument('bar', nargs='...')
+        args = parser.parse_args(['--foo', 'a', '--', 'b', '--', 'c'])
+        self.assertEqual(NS(foo='a', bar=['--', 'b', '--', 'c']), args)
+
+    def test_subparser(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('foo')
+        subparsers = parser.add_subparsers()
+        parser1 = subparsers.add_parser('run')
+        parser1.add_argument('-f')
+        parser1.add_argument('bar', nargs='*')
+
+        args = parser.parse_args(['x', 'run', 'a', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f='c', bar=['a', 'b']), args)
+        args = parser.parse_args(['x', 'run', 'a', 'b', '--', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f=None, bar=['a', 'b', '-f', 'c']), args)
+        args = parser.parse_args(['x', 'run', 'a', '--', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f=None, bar=['a', 'b', '-f', 'c']), args)
+        args = parser.parse_args(['x', 'run', '--', 'a', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f=None, bar=['a', 'b', '-f', 'c']), args)
+        args = parser.parse_args(['x', '--', 'run', 'a', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f='c', bar=['a', 'b']), args)
+        args = parser.parse_args(['--', 'x', 'run', 'a', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo='x', f='c', bar=['a', 'b']), args)
+        args = parser.parse_args(['x', 'run', '--', 'a', '--', 'b'])
+        self.assertEqual(NS(foo='x', f=None, bar=['a', '--', 'b']), args)
+        args = parser.parse_args(['x', '--', 'run', '--', 'a', '--', 'b'])
+        self.assertEqual(NS(foo='x', f=None, bar=['a', '--', 'b']), args)
+        self.assertRaisesRegex(argparse.ArgumentError,
+            "invalid choice: '--'",
+            parser.parse_args, ['--', 'x', '--', 'run', 'a', 'b'])
+
+    def test_subparser_after_multiple_argument_option(self):
+        parser = argparse.ArgumentParser(exit_on_error=False)
+        parser.add_argument('--foo', nargs='*')
+        subparsers = parser.add_subparsers()
+        parser1 = subparsers.add_parser('run')
+        parser1.add_argument('-f')
+        parser1.add_argument('bar', nargs='*')
+
+        args = parser.parse_args(['--foo', 'x', 'y', '--', 'run', 'a', 'b', '-f', 'c'])
+        self.assertEqual(NS(foo=['x', 'y'], f='c', bar=['a', 'b']), args)
+        self.assertRaisesRegex(argparse.ArgumentError,
+            "invalid choice: '--'",
+            parser.parse_args, ['--foo', 'x', '--', '--', 'run', 'a', 'b'])
 
 
 # ===========================
@@ -5759,14 +6257,25 @@ def test_basic(self):
 
         args, extras = parser.parse_known_args(argv)
         # cannot parse the '1,2,3'
-        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[]), args)
-        self.assertEqual(["1", "2", "3"], extras)
+        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1]), args)
+        self.assertEqual(["2", "3"], extras)
+        args, extras = parser.parse_known_intermixed_args(argv)
+        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1, 2, 3]), args)
+        self.assertEqual([], extras)
 
+        # unknown optionals go into extras
+        argv = 'cmd --foo x --error 1 2 --bar y 3'.split()
+        args, extras = parser.parse_known_intermixed_args(argv)
+        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1, 2, 3]), args)
+        self.assertEqual(['--error'], extras)
         argv = 'cmd --foo x 1 --error 2 --bar y 3'.split()
         args, extras = parser.parse_known_intermixed_args(argv)
-        # unknown optionals go into extras
-        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1]), args)
-        self.assertEqual(['--error', '2', '3'], extras)
+        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1, 2, 3]), args)
+        self.assertEqual(['--error'], extras)
+        argv = 'cmd --foo x 1 2 --error --bar y 3'.split()
+        args, extras = parser.parse_known_intermixed_args(argv)
+        self.assertEqual(NS(bar='y', cmd='cmd', foo='x', rest=[1, 2, 3]), args)
+        self.assertEqual(['--error'], extras)
 
         # restores attributes that were temporarily changed
         self.assertIsNone(parser.usage)
@@ -5785,38 +6294,48 @@ def test_remainder(self):
             parser.parse_intermixed_args(argv)
         self.assertRegex(str(cm.exception), r'\.\.\.')
 
-    def test_exclusive(self):
-        # mutually exclusive group; intermixed works fine
-        parser = ErrorRaisingArgumentParser(prog='PROG')
+    def test_required_exclusive(self):
+        # required mutually exclusive group; intermixed works fine
+        parser = argparse.ArgumentParser(prog='PROG', exit_on_error=False)
         group = parser.add_mutually_exclusive_group(required=True)
         group.add_argument('--foo', action='store_true', help='FOO')
         group.add_argument('--spam', help='SPAM')
         parser.add_argument('badger', nargs='*', default='X', help='BADGER')
+        args = parser.parse_intermixed_args('--foo 1 2'.split())
+        self.assertEqual(NS(badger=['1', '2'], foo=True, spam=None), args)
         args = parser.parse_intermixed_args('1 --foo 2'.split())
         self.assertEqual(NS(badger=['1', '2'], foo=True, spam=None), args)
-        self.assertRaises(ArgumentParserError, parser.parse_intermixed_args, '1 2'.split())
+        self.assertRaisesRegex(argparse.ArgumentError,
+                'one of the arguments --foo --spam is required',
+                parser.parse_intermixed_args, '1 2'.split())
         self.assertEqual(group.required, True)
 
-    def test_exclusive_incompatible(self):
-        # mutually exclusive group including positional - fail
-        parser = ErrorRaisingArgumentParser(prog='PROG')
+    def test_required_exclusive_with_positional(self):
+        # required mutually exclusive group with positional argument
+        parser = argparse.ArgumentParser(prog='PROG', exit_on_error=False)
         group = parser.add_mutually_exclusive_group(required=True)
         group.add_argument('--foo', action='store_true', help='FOO')
         group.add_argument('--spam', help='SPAM')
         group.add_argument('badger', nargs='*', default='X', help='BADGER')
-        self.assertRaises(TypeError, parser.parse_intermixed_args, [])
+        args = parser.parse_intermixed_args(['--foo'])
+        self.assertEqual(NS(foo=True, spam=None, badger='X'), args)
+        args = parser.parse_intermixed_args(['a', 'b'])
+        self.assertEqual(NS(foo=False, spam=None, badger=['a', 'b']), args)
+        self.assertRaisesRegex(argparse.ArgumentError,
+                'one of the arguments --foo --spam badger is required',
+                parser.parse_intermixed_args, [])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                'argument badger: not allowed with argument --foo',
+                parser.parse_intermixed_args, ['--foo', 'a', 'b'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                'argument badger: not allowed with argument --foo',
+                parser.parse_intermixed_args, ['a', '--foo', 'b'])
         self.assertEqual(group.required, True)
 
     def test_invalid_args(self):
         parser = ErrorRaisingArgumentParser(prog='PROG')
         self.assertRaises(ArgumentParserError, parser.parse_intermixed_args, ['a'])
 
-        parser = ErrorRaisingArgumentParser(prog='PROG')
-        parser.add_argument('--foo', nargs="*")
-        parser.add_argument('foo')
-        with captured_stderr() as stderr:
-            parser.parse_intermixed_args(['hello', '--foo'])
-            self.assertIn("UserWarning", stderr.getvalue())
 
 class TestIntermixedMessageContentError(TestCase):
     # case where Intermixed gives different error message
@@ -5835,7 +6354,7 @@ def test_missing_argument_name_in_message(self):
         with self.assertRaises(ArgumentParserError) as cm:
             parser.parse_intermixed_args([])
         msg = str(cm.exception)
-        self.assertNotRegex(msg, 'req_pos')
+        self.assertRegex(msg, 'req_pos')
         self.assertRegex(msg, 'req_opt')
 
 # ==========================
@@ -6085,7 +6604,8 @@ def test_help_with_metavar(self):
 class TestExitOnError(TestCase):
 
     def setUp(self):
-        self.parser = argparse.ArgumentParser(exit_on_error=False)
+        self.parser = argparse.ArgumentParser(exit_on_error=False,
+                                              fromfile_prefix_chars='@')
         self.parser.add_argument('--integers', metavar='N', type=int)
 
     def test_exit_on_error_with_good_args(self):
@@ -6096,6 +6616,153 @@ def test_exit_on_error_with_bad_args(self):
         with self.assertRaises(argparse.ArgumentError):
             self.parser.parse_args('--integers a'.split())
 
+    def test_unrecognized_args(self):
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'unrecognized arguments: --foo bar',
+                               self.parser.parse_args, '--foo bar'.split())
+
+    def test_unrecognized_intermixed_args(self):
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'unrecognized arguments: --foo bar',
+                               self.parser.parse_intermixed_args, '--foo bar'.split())
+
+    def test_required_args(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar, baz$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_with_metavar(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', metavar='BaZ')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar, BaZ$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_n(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs=3)
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar, baz$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_n_with_metavar(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs=3, metavar=('B', 'A', 'Z'))
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar, B, A, Z$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_optional(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs='?')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_zero_or_more(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs='*')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_one_or_more(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs='+')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar, baz$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_one_or_more_with_metavar(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs='+', metavar=('BaZ1', 'BaZ2'))
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               r'the following arguments are required: bar, BaZ1\[, BaZ2]$',
+                               self.parser.parse_args, [])
+
+    def test_required_args_remainder(self):
+        self.parser.add_argument('bar')
+        self.parser.add_argument('baz', nargs='...')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'the following arguments are required: bar$',
+                               self.parser.parse_args, [])
+
+    def test_required_mutually_exclusive_args(self):
+        group = self.parser.add_mutually_exclusive_group(required=True)
+        group.add_argument('--bar')
+        group.add_argument('--baz')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'one of the arguments --bar --baz is required',
+                               self.parser.parse_args, [])
+
+    def test_conflicting_mutually_exclusive_args_optional_with_metavar(self):
+        group = self.parser.add_mutually_exclusive_group()
+        group.add_argument('--bar')
+        group.add_argument('baz', nargs='?', metavar='BaZ')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'argument BaZ: not allowed with argument --bar$',
+                               self.parser.parse_args, ['--bar', 'a', 'b'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'argument --bar: not allowed with argument BaZ$',
+                               self.parser.parse_args, ['a', '--bar', 'b'])
+
+    def test_conflicting_mutually_exclusive_args_zero_or_more_with_metavar1(self):
+        group = self.parser.add_mutually_exclusive_group()
+        group.add_argument('--bar')
+        group.add_argument('baz', nargs='*', metavar=('BAZ1',))
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'argument BAZ1: not allowed with argument --bar$',
+                               self.parser.parse_args, ['--bar', 'a', 'b'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               'argument --bar: not allowed with argument BAZ1$',
+                               self.parser.parse_args, ['a', '--bar', 'b'])
+
+    def test_conflicting_mutually_exclusive_args_zero_or_more_with_metavar2(self):
+        group = self.parser.add_mutually_exclusive_group()
+        group.add_argument('--bar')
+        group.add_argument('baz', nargs='*', metavar=('BAZ1', 'BAZ2'))
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               r'argument BAZ1\[, BAZ2]: not allowed with argument --bar$',
+                               self.parser.parse_args, ['--bar', 'a', 'b'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               r'argument --bar: not allowed with argument BAZ1\[, BAZ2]$',
+                               self.parser.parse_args, ['a', '--bar', 'b'])
+
+    def test_ambiguous_option(self):
+        self.parser.add_argument('--foobaz')
+        self.parser.add_argument('--fooble', action='store_true')
+        self.parser.add_argument('--foogle')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                "ambiguous option: --foob could match --foobaz, --fooble",
+            self.parser.parse_args, ['--foob'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                "ambiguous option: --foob=1 could match --foobaz, --fooble$",
+            self.parser.parse_args, ['--foob=1'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                "ambiguous option: --foob could match --foobaz, --fooble$",
+            self.parser.parse_args, ['--foob', '1', '--foogle', '2'])
+        self.assertRaisesRegex(argparse.ArgumentError,
+                "ambiguous option: --foob=1 could match --foobaz, --fooble$",
+            self.parser.parse_args, ['--foob=1', '--foogle', '2'])
+
+    def test_os_error(self):
+        self.parser.add_argument('file')
+        self.assertRaisesRegex(argparse.ArgumentError,
+                               "No such file or directory: 'no-such-file'",
+                               self.parser.parse_args, ['@no-such-file'])
+
+
+# =================
+# Translation tests
+# =================
+
+class TestTranslations(TestTranslationsBase):
+
+    def test_translations(self):
+        self.assertMsgidsEqual(argparse)
+
 
 def tearDownModule():
     # Remove global references to avoid looking like we have refleaks.
@@ -6104,4 +6771,8 @@ def tearDownModule():
 
 
 if __name__ == '__main__':
+    # To regenerate translation snapshots
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_translation_snapshots(argparse)
+        sys.exit(0)
     unittest.main()
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 95383be9659eb9..f0e32befd6628d 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -1493,7 +1493,7 @@ def test_byteswap(self):
                 self.assertEqual(a, b)
             else:
                 # On alphas treating the byte swapped bit patters as
-                # floats/doubles results in floating point exceptions
+                # floats/doubles results in floating-point exceptions
                 # => compare the 8bit string values instead
                 self.assertNotEqual(a.tobytes(), b.tobytes())
             b.byteswap()
@@ -1665,5 +1665,13 @@ def test_tolist(self, size):
         self.assertEqual(ls[:8], list(example[:8]))
         self.assertEqual(ls[-8:], list(example[-8:]))
 
+    def test_gh_128961(self):
+        a = array.array('i')
+        it = iter(a)
+        list(it)
+        it.__setstate__(0)
+        self.assertRaises(StopIteration, next, it)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
deleted file mode 100644
index f6e22d44406d9e..00000000000000
--- a/Lib/test/test_ast.py
+++ /dev/null
@@ -1,3368 +0,0 @@
-import ast
-import builtins
-import dis
-import enum
-import os
-import re
-import sys
-import textwrap
-import types
-import unittest
-import warnings
-import weakref
-from functools import partial
-from textwrap import dedent
-try:
-    import _testinternalcapi
-except ImportError:
-    _testinternalcapi = None
-
-from test import support
-from test.support.import_helper import import_fresh_module
-from test.support import os_helper, script_helper
-from test.support.ast_helper import ASTTestMixin
-
-def to_tuple(t):
-    if t is None or isinstance(t, (str, int, complex)) or t is Ellipsis:
-        return t
-    elif isinstance(t, list):
-        return [to_tuple(e) for e in t]
-    result = [t.__class__.__name__]
-    if hasattr(t, 'lineno') and hasattr(t, 'col_offset'):
-        result.append((t.lineno, t.col_offset))
-        if hasattr(t, 'end_lineno') and hasattr(t, 'end_col_offset'):
-            result[-1] += (t.end_lineno, t.end_col_offset)
-    if t._fields is None:
-        return tuple(result)
-    for f in t._fields:
-        result.append(to_tuple(getattr(t, f)))
-    return tuple(result)
-
-
-# These tests are compiled through "exec"
-# There should be at least one test per statement
-exec_tests = [
-    # None
-    "None",
-    # Module docstring
-    "'module docstring'",
-    # FunctionDef
-    "def f(): pass",
-    # FunctionDef with docstring
-    "def f(): 'function docstring'",
-    # FunctionDef with arg
-    "def f(a): pass",
-    # FunctionDef with arg and default value
-    "def f(a=0): pass",
-    # FunctionDef with varargs
-    "def f(*args): pass",
-    # FunctionDef with varargs as TypeVarTuple
-    "def f(*args: *Ts): pass",
-    # FunctionDef with varargs as unpacked Tuple
-    "def f(*args: *tuple[int, ...]): pass",
-    # FunctionDef with varargs as unpacked Tuple *and* TypeVarTuple
-    "def f(*args: *tuple[int, *Ts]): pass",
-    # FunctionDef with kwargs
-    "def f(**kwargs): pass",
-    # FunctionDef with all kind of args and docstring
-    "def f(a, b=1, c=None, d=[], e={}, *args, f=42, **kwargs): 'doc for f()'",
-    # FunctionDef with type annotation on return involving unpacking
-    "def f() -> tuple[*Ts]: pass",
-    "def f() -> tuple[int, *Ts]: pass",
-    "def f() -> tuple[int, *tuple[int, ...]]: pass",
-    # ClassDef
-    "class C:pass",
-    # ClassDef with docstring
-    "class C: 'docstring for class C'",
-    # ClassDef, new style class
-    "class C(object): pass",
-    # Return
-    "def f():return 1",
-    # Delete
-    "del v",
-    # Assign
-    "v = 1",
-    "a,b = c",
-    "(a,b) = c",
-    "[a,b] = c",
-    # AnnAssign with unpacked types
-    "x: tuple[*Ts]",
-    "x: tuple[int, *Ts]",
-    "x: tuple[int, *tuple[str, ...]]",
-    # AugAssign
-    "v += 1",
-    # For
-    "for v in v:pass",
-    # While
-    "while v:pass",
-    # If
-    "if v:pass",
-    # If-Elif
-    "if a:\n  pass\nelif b:\n  pass",
-    # If-Elif-Else
-    "if a:\n  pass\nelif b:\n  pass\nelse:\n  pass",
-    # With
-    "with x as y: pass",
-    "with x as y, z as q: pass",
-    "with (x as y): pass",
-    "with (x, y): pass",
-    # Raise
-    "raise Exception('string')",
-    # TryExcept
-    "try:\n  pass\nexcept Exception:\n  pass",
-    # TryFinally
-    "try:\n  pass\nfinally:\n  pass",
-    # TryStarExcept
-    "try:\n  pass\nexcept* Exception:\n  pass",
-    # Assert
-    "assert v",
-    # Import
-    "import sys",
-    # ImportFrom
-    "from sys import v",
-    # Global
-    "global v",
-    # Expr
-    "1",
-    # Pass,
-    "pass",
-    # Break
-    "for v in v:break",
-    # Continue
-    "for v in v:continue",
-    # for statements with naked tuples (see http://bugs.python.org/issue6704)
-    "for a,b in c: pass",
-    "for (a,b) in c: pass",
-    "for [a,b] in c: pass",
-    # Multiline generator expression (test for .lineno & .col_offset)
-    """(
-    (
-    Aa
-    ,
-       Bb
-    )
-    for
-    Aa
-    ,
-    Bb in Cc
-    )""",
-    # dictcomp
-    "{a : b for w in x for m in p if g}",
-    # dictcomp with naked tuple
-    "{a : b for v,w in x}",
-    # setcomp
-    "{r for l in x if g}",
-    # setcomp with naked tuple
-    "{r for l,m in x}",
-    # AsyncFunctionDef
-    "async def f():\n 'async function'\n await something()",
-    # AsyncFor
-    "async def f():\n async for e in i: 1\n else: 2",
-    # AsyncWith
-    "async def f():\n async with a as b: 1",
-    # PEP 448: Additional Unpacking Generalizations
-    "{**{1:2}, 2:3}",
-    "{*{1, 2}, 3}",
-    # Asynchronous comprehensions
-    "async def f():\n [i async for b in c]",
-    # Decorated FunctionDef
-    "@deco1\n@deco2()\n@deco3(1)\ndef f(): pass",
-    # Decorated AsyncFunctionDef
-    "@deco1\n@deco2()\n@deco3(1)\nasync def f(): pass",
-    # Decorated ClassDef
-    "@deco1\n@deco2()\n@deco3(1)\nclass C: pass",
-    # Decorator with generator argument
-    "@deco(a for a in b)\ndef f(): pass",
-    # Decorator with attribute
-    "@a.b.c\ndef f(): pass",
-    # Simple assignment expression
-    "(a := 1)",
-    # Positional-only arguments
-    "def f(a, /,): pass",
-    "def f(a, /, c, d, e): pass",
-    "def f(a, /, c, *, d, e): pass",
-    "def f(a, /, c, *, d, e, **kwargs): pass",
-    # Positional-only arguments with defaults
-    "def f(a=1, /,): pass",
-    "def f(a=1, /, b=2, c=4): pass",
-    "def f(a=1, /, b=2, *, c=4): pass",
-    "def f(a=1, /, b=2, *, c): pass",
-    "def f(a=1, /, b=2, *, c=4, **kwargs): pass",
-    "def f(a=1, /, b=2, *, c, **kwargs): pass",
-    # Type aliases
-    "type X = int",
-    "type X[T] = int",
-    "type X[T, *Ts, **P] = (T, Ts, P)",
-    "type X[T: int, *Ts, **P] = (T, Ts, P)",
-    "type X[T: (int, str), *Ts, **P] = (T, Ts, P)",
-    "type X[T: int = 1, *Ts = 2, **P =3] = (T, Ts, P)",
-    # Generic classes
-    "class X[T]: pass",
-    "class X[T, *Ts, **P]: pass",
-    "class X[T: int, *Ts, **P]: pass",
-    "class X[T: (int, str), *Ts, **P]: pass",
-    "class X[T: int = 1, *Ts = 2, **P = 3]: pass",
-    # Generic functions
-    "def f[T](): pass",
-    "def f[T, *Ts, **P](): pass",
-    "def f[T: int, *Ts, **P](): pass",
-    "def f[T: (int, str), *Ts, **P](): pass",
-    "def f[T: int = 1, *Ts = 2, **P = 3](): pass",
-]
-
-# These are compiled through "single"
-# because of overlap with "eval", it just tests what
-# can't be tested with "eval"
-single_tests = [
-    "1+2"
-]
-
-# These are compiled through "eval"
-# It should test all expressions
-eval_tests = [
-  # None
-  "None",
-  # BoolOp
-  "a and b",
-  # BinOp
-  "a + b",
-  # UnaryOp
-  "not v",
-  # Lambda
-  "lambda:None",
-  # Dict
-  "{ 1:2 }",
-  # Empty dict
-  "{}",
-  # Set
-  "{None,}",
-  # Multiline dict (test for .lineno & .col_offset)
-  """{
-      1
-        :
-          2
-     }""",
-  # ListComp
-  "[a for b in c if d]",
-  # GeneratorExp
-  "(a for b in c if d)",
-  # Comprehensions with multiple for targets
-  "[(a,b) for a,b in c]",
-  "[(a,b) for (a,b) in c]",
-  "[(a,b) for [a,b] in c]",
-  "{(a,b) for a,b in c}",
-  "{(a,b) for (a,b) in c}",
-  "{(a,b) for [a,b] in c}",
-  "((a,b) for a,b in c)",
-  "((a,b) for (a,b) in c)",
-  "((a,b) for [a,b] in c)",
-  # Yield - yield expressions can't work outside a function
-  #
-  # Compare
-  "1 < 2 < 3",
-  # Call
-  "f(1,2,c=3,*d,**e)",
-  # Call with multi-character starred
-  "f(*[0, 1])",
-  # Call with a generator argument
-  "f(a for a in b)",
-  # Num
-  "10",
-  # Str
-  "'string'",
-  # Attribute
-  "a.b",
-  # Subscript
-  "a[b:c]",
-  # Name
-  "v",
-  # List
-  "[1,2,3]",
-  # Empty list
-  "[]",
-  # Tuple
-  "1,2,3",
-  # Tuple
-  "(1,2,3)",
-  # Empty tuple
-  "()",
-  # Combination
-  "a.b.c.d(a.b[1:2])",
-]
-
-# TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
-# excepthandler, arguments, keywords, alias
-
-class AST_Tests(unittest.TestCase):
-    maxDiff = None
-
-    def _is_ast_node(self, name, node):
-        if not isinstance(node, type):
-            return False
-        if "ast" not in node.__module__:
-            return False
-        return name != 'AST' and name[0].isupper()
-
-    def _assertTrueorder(self, ast_node, parent_pos):
-        if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
-            return
-        if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
-            node_pos = (ast_node.lineno, ast_node.col_offset)
-            self.assertGreaterEqual(node_pos, parent_pos)
-            parent_pos = (ast_node.lineno, ast_node.col_offset)
-        for name in ast_node._fields:
-            value = getattr(ast_node, name)
-            if isinstance(value, list):
-                first_pos = parent_pos
-                if value and name == 'decorator_list':
-                    first_pos = (value[0].lineno, value[0].col_offset)
-                for child in value:
-                    self._assertTrueorder(child, first_pos)
-            elif value is not None:
-                self._assertTrueorder(value, parent_pos)
-        self.assertEqual(ast_node._fields, ast_node.__match_args__)
-
-    def test_AST_objects(self):
-        x = ast.AST()
-        self.assertEqual(x._fields, ())
-        x.foobar = 42
-        self.assertEqual(x.foobar, 42)
-        self.assertEqual(x.__dict__["foobar"], 42)
-
-        with self.assertRaises(AttributeError):
-            x.vararg
-
-        with self.assertRaises(TypeError):
-            # "ast.AST constructor takes 0 positional arguments"
-            ast.AST(2)
-
-    def test_AST_garbage_collection(self):
-        class X:
-            pass
-        a = ast.AST()
-        a.x = X()
-        a.x.a = a
-        ref = weakref.ref(a.x)
-        del a
-        support.gc_collect()
-        self.assertIsNone(ref())
-
-    def test_snippets(self):
-        for input, output, kind in ((exec_tests, exec_results, "exec"),
-                                    (single_tests, single_results, "single"),
-                                    (eval_tests, eval_results, "eval")):
-            for i, o in zip(input, output):
-                with self.subTest(action="parsing", input=i):
-                    ast_tree = compile(i, "?", kind, ast.PyCF_ONLY_AST)
-                    self.assertEqual(to_tuple(ast_tree), o)
-                    self._assertTrueorder(ast_tree, (0, 0))
-                with self.subTest(action="compiling", input=i, kind=kind):
-                    compile(ast_tree, "?", kind)
-
-    def test_ast_validation(self):
-        # compile() is the only function that calls PyAST_Validate
-        snippets_to_validate = exec_tests + single_tests + eval_tests
-        for snippet in snippets_to_validate:
-            tree = ast.parse(snippet)
-            compile(tree, '<string>', 'exec')
-
-    def test_optimization_levels__debug__(self):
-        cases = [(-1, '__debug__'), (0, '__debug__'), (1, False), (2, False)]
-        for (optval, expected) in cases:
-            with self.subTest(optval=optval, expected=expected):
-                res1 = ast.parse("__debug__", optimize=optval)
-                res2 = ast.parse(ast.parse("__debug__"), optimize=optval)
-                for res in [res1, res2]:
-                    self.assertIsInstance(res.body[0], ast.Expr)
-                    if isinstance(expected, bool):
-                        self.assertIsInstance(res.body[0].value, ast.Constant)
-                        self.assertEqual(res.body[0].value.value, expected)
-                    else:
-                        self.assertIsInstance(res.body[0].value, ast.Name)
-                        self.assertEqual(res.body[0].value.id, expected)
-
-    def test_optimization_levels_const_folding(self):
-        folded = ('Expr', (1, 0, 1, 5), ('Constant', (1, 0, 1, 5), 3, None))
-        not_folded = ('Expr', (1, 0, 1, 5),
-                         ('BinOp', (1, 0, 1, 5),
-                             ('Constant', (1, 0, 1, 1), 1, None),
-                             ('Add',),
-                             ('Constant', (1, 4, 1, 5), 2, None)))
-
-        cases = [(-1, not_folded), (0, not_folded), (1, folded), (2, folded)]
-        for (optval, expected) in cases:
-            with self.subTest(optval=optval):
-                tree1 = ast.parse("1 + 2", optimize=optval)
-                tree2 = ast.parse(ast.parse("1 + 2"), optimize=optval)
-                for tree in [tree1, tree2]:
-                    res = to_tuple(tree.body[0])
-                    self.assertEqual(res, expected)
-
-    def test_invalid_position_information(self):
-        invalid_linenos = [
-            (10, 1), (-10, -11), (10, -11), (-5, -2), (-5, 1)
-        ]
-
-        for lineno, end_lineno in invalid_linenos:
-            with self.subTest(f"Check invalid linenos {lineno}:{end_lineno}"):
-                snippet = "a = 1"
-                tree = ast.parse(snippet)
-                tree.body[0].lineno = lineno
-                tree.body[0].end_lineno = end_lineno
-                with self.assertRaises(ValueError):
-                    compile(tree, '<string>', 'exec')
-
-        invalid_col_offsets = [
-            (10, 1), (-10, -11), (10, -11), (-5, -2), (-5, 1)
-        ]
-        for col_offset, end_col_offset in invalid_col_offsets:
-            with self.subTest(f"Check invalid col_offset {col_offset}:{end_col_offset}"):
-                snippet = "a = 1"
-                tree = ast.parse(snippet)
-                tree.body[0].col_offset = col_offset
-                tree.body[0].end_col_offset = end_col_offset
-                with self.assertRaises(ValueError):
-                    compile(tree, '<string>', 'exec')
-
-    def test_compilation_of_ast_nodes_with_default_end_position_values(self):
-        tree = ast.Module(body=[
-            ast.Import(names=[ast.alias(name='builtins', lineno=1, col_offset=0)], lineno=1, col_offset=0),
-            ast.Import(names=[ast.alias(name='traceback', lineno=0, col_offset=0)], lineno=0, col_offset=1)
-        ], type_ignores=[])
-
-        # Check that compilation doesn't crash. Note: this may crash explicitly only on debug mode.
-        compile(tree, "<string>", "exec")
-
-    def test_slice(self):
-        slc = ast.parse("x[::]").body[0].value.slice
-        self.assertIsNone(slc.upper)
-        self.assertIsNone(slc.lower)
-        self.assertIsNone(slc.step)
-
-    def test_from_import(self):
-        im = ast.parse("from . import y").body[0]
-        self.assertIsNone(im.module)
-
-    def test_non_interned_future_from_ast(self):
-        mod = ast.parse("from __future__ import division")
-        self.assertIsInstance(mod.body[0], ast.ImportFrom)
-        mod.body[0].module = " __future__ ".strip()
-        compile(mod, "<test>", "exec")
-
-    def test_alias(self):
-        im = ast.parse("from bar import y").body[0]
-        self.assertEqual(len(im.names), 1)
-        alias = im.names[0]
-        self.assertEqual(alias.name, 'y')
-        self.assertIsNone(alias.asname)
-        self.assertEqual(alias.lineno, 1)
-        self.assertEqual(alias.end_lineno, 1)
-        self.assertEqual(alias.col_offset, 16)
-        self.assertEqual(alias.end_col_offset, 17)
-
-        im = ast.parse("from bar import *").body[0]
-        alias = im.names[0]
-        self.assertEqual(alias.name, '*')
-        self.assertIsNone(alias.asname)
-        self.assertEqual(alias.lineno, 1)
-        self.assertEqual(alias.end_lineno, 1)
-        self.assertEqual(alias.col_offset, 16)
-        self.assertEqual(alias.end_col_offset, 17)
-
-        im = ast.parse("from bar import y as z").body[0]
-        alias = im.names[0]
-        self.assertEqual(alias.name, "y")
-        self.assertEqual(alias.asname, "z")
-        self.assertEqual(alias.lineno, 1)
-        self.assertEqual(alias.end_lineno, 1)
-        self.assertEqual(alias.col_offset, 16)
-        self.assertEqual(alias.end_col_offset, 22)
-
-        im = ast.parse("import bar as foo").body[0]
-        alias = im.names[0]
-        self.assertEqual(alias.name, "bar")
-        self.assertEqual(alias.asname, "foo")
-        self.assertEqual(alias.lineno, 1)
-        self.assertEqual(alias.end_lineno, 1)
-        self.assertEqual(alias.col_offset, 7)
-        self.assertEqual(alias.end_col_offset, 17)
-
-    def test_base_classes(self):
-        self.assertTrue(issubclass(ast.For, ast.stmt))
-        self.assertTrue(issubclass(ast.Name, ast.expr))
-        self.assertTrue(issubclass(ast.stmt, ast.AST))
-        self.assertTrue(issubclass(ast.expr, ast.AST))
-        self.assertTrue(issubclass(ast.comprehension, ast.AST))
-        self.assertTrue(issubclass(ast.Gt, ast.AST))
-
-    def test_import_deprecated(self):
-        ast = import_fresh_module('ast')
-        depr_regex = (
-            r'ast\.{} is deprecated and will be removed in Python 3.14; '
-            r'use ast\.Constant instead'
-        )
-        for name in 'Num', 'Str', 'Bytes', 'NameConstant', 'Ellipsis':
-            with self.assertWarnsRegex(DeprecationWarning, depr_regex.format(name)):
-                getattr(ast, name)
-
-    def test_field_attr_existence_deprecated(self):
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num, Str, Bytes, NameConstant, Ellipsis
-
-        for name in ('Num', 'Str', 'Bytes', 'NameConstant', 'Ellipsis'):
-            item = getattr(ast, name)
-            if self._is_ast_node(name, item):
-                with self.subTest(item):
-                    with self.assertWarns(DeprecationWarning):
-                        x = item()
-                if isinstance(x, ast.AST):
-                    self.assertIs(type(x._fields), tuple)
-
-    def test_field_attr_existence(self):
-        for name, item in ast.__dict__.items():
-            # These emit DeprecationWarnings
-            if name in {'Num', 'Str', 'Bytes', 'NameConstant', 'Ellipsis'}:
-                continue
-            # constructor has a different signature
-            if name == 'Index':
-                continue
-            if self._is_ast_node(name, item):
-                x = self._construct_ast_class(item)
-                if isinstance(x, ast.AST):
-                    self.assertIs(type(x._fields), tuple)
-
-    def _construct_ast_class(self, cls):
-        kwargs = {}
-        for name, typ in cls.__annotations__.items():
-            if typ is str:
-                kwargs[name] = 'capybara'
-            elif typ is int:
-                kwargs[name] = 42
-            elif typ is object:
-                kwargs[name] = b'capybara'
-            elif isinstance(typ, type) and issubclass(typ, ast.AST):
-                kwargs[name] = self._construct_ast_class(typ)
-        return cls(**kwargs)
-
-    def test_arguments(self):
-        x = ast.arguments()
-        self.assertEqual(x._fields, ('posonlyargs', 'args', 'vararg', 'kwonlyargs',
-                                     'kw_defaults', 'kwarg', 'defaults'))
-        self.assertEqual(x.__annotations__, {
-            'posonlyargs': list[ast.arg],
-            'args': list[ast.arg],
-            'vararg': ast.arg | None,
-            'kwonlyargs': list[ast.arg],
-            'kw_defaults': list[ast.expr],
-            'kwarg': ast.arg | None,
-            'defaults': list[ast.expr],
-        })
-
-        self.assertEqual(x.args, [])
-        self.assertIsNone(x.vararg)
-
-        x = ast.arguments(*range(1, 8))
-        self.assertEqual(x.args, 2)
-        self.assertEqual(x.vararg, 3)
-
-    def test_field_attr_writable_deprecated(self):
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            x = ast.Num()
-        # We can assign to _fields
-        x._fields = 666
-        self.assertEqual(x._fields, 666)
-
-    def test_field_attr_writable(self):
-        x = ast.Constant(1)
-        # We can assign to _fields
-        x._fields = 666
-        self.assertEqual(x._fields, 666)
-
-    def test_classattrs_deprecated(self):
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num, Str, Bytes, NameConstant, Ellipsis
-
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            x = ast.Num()
-            self.assertEqual(x._fields, ('value', 'kind'))
-
-            with self.assertRaises(AttributeError):
-                x.value
-
-            with self.assertRaises(AttributeError):
-                x.n
-
-            x = ast.Num(42)
-            self.assertEqual(x.value, 42)
-            self.assertEqual(x.n, 42)
-
-            with self.assertRaises(AttributeError):
-                x.lineno
-
-            with self.assertRaises(AttributeError):
-                x.foobar
-
-            x = ast.Num(lineno=2)
-            self.assertEqual(x.lineno, 2)
-
-            x = ast.Num(42, lineno=0)
-            self.assertEqual(x.lineno, 0)
-            self.assertEqual(x._fields, ('value', 'kind'))
-            self.assertEqual(x.value, 42)
-            self.assertEqual(x.n, 42)
-
-            self.assertRaises(TypeError, ast.Num, 1, None, 2)
-            self.assertRaises(TypeError, ast.Num, 1, None, 2, lineno=0)
-
-            # Arbitrary keyword arguments are supported
-            self.assertEqual(ast.Num(1, foo='bar').foo, 'bar')
-
-            with self.assertRaisesRegex(TypeError, "Num got multiple values for argument 'n'"):
-                ast.Num(1, n=2)
-
-            self.assertEqual(ast.Num(42).n, 42)
-            self.assertEqual(ast.Num(4.25).n, 4.25)
-            self.assertEqual(ast.Num(4.25j).n, 4.25j)
-            self.assertEqual(ast.Str('42').s, '42')
-            self.assertEqual(ast.Bytes(b'42').s, b'42')
-            self.assertIs(ast.NameConstant(True).value, True)
-            self.assertIs(ast.NameConstant(False).value, False)
-            self.assertIs(ast.NameConstant(None).value, None)
-
-        self.assertEqual([str(w.message) for w in wlog], [
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            "Constant.__init__ missing 1 required positional argument: 'value'. This will become "
-            'an error in Python 3.15.',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            "Constant.__init__ missing 1 required positional argument: 'value'. This will become "
-            'an error in Python 3.15.',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            "Constant.__init__ got an unexpected keyword argument 'foo'. Support for "
-            'arbitrary keyword arguments is deprecated and will be removed in Python '
-            '3.15.',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Str is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute s is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Bytes is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute s is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-        ])
-
-    def test_classattrs(self):
-        with self.assertWarns(DeprecationWarning):
-            x = ast.Constant()
-        self.assertEqual(x._fields, ('value', 'kind'))
-
-        with self.assertRaises(AttributeError):
-            x.value
-
-        x = ast.Constant(42)
-        self.assertEqual(x.value, 42)
-
-        with self.assertRaises(AttributeError):
-            x.lineno
-
-        with self.assertRaises(AttributeError):
-            x.foobar
-
-        x = ast.Constant(lineno=2, value=3)
-        self.assertEqual(x.lineno, 2)
-
-        x = ast.Constant(42, lineno=0)
-        self.assertEqual(x.lineno, 0)
-        self.assertEqual(x._fields, ('value', 'kind'))
-        self.assertEqual(x.value, 42)
-
-        self.assertRaises(TypeError, ast.Constant, 1, None, 2)
-        self.assertRaises(TypeError, ast.Constant, 1, None, 2, lineno=0)
-
-        # Arbitrary keyword arguments are supported (but deprecated)
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(ast.Constant(1, foo='bar').foo, 'bar')
-
-        with self.assertRaisesRegex(TypeError, "Constant got multiple values for argument 'value'"):
-            ast.Constant(1, value=2)
-
-        self.assertEqual(ast.Constant(42).value, 42)
-        self.assertEqual(ast.Constant(4.25).value, 4.25)
-        self.assertEqual(ast.Constant(4.25j).value, 4.25j)
-        self.assertEqual(ast.Constant('42').value, '42')
-        self.assertEqual(ast.Constant(b'42').value, b'42')
-        self.assertIs(ast.Constant(True).value, True)
-        self.assertIs(ast.Constant(False).value, False)
-        self.assertIs(ast.Constant(None).value, None)
-        self.assertIs(ast.Constant(...).value, ...)
-
-    def test_realtype(self):
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num, Str, Bytes, NameConstant, Ellipsis
-
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            self.assertIs(type(ast.Num(42)), ast.Constant)
-            self.assertIs(type(ast.Num(4.25)), ast.Constant)
-            self.assertIs(type(ast.Num(4.25j)), ast.Constant)
-            self.assertIs(type(ast.Str('42')), ast.Constant)
-            self.assertIs(type(ast.Bytes(b'42')), ast.Constant)
-            self.assertIs(type(ast.NameConstant(True)), ast.Constant)
-            self.assertIs(type(ast.NameConstant(False)), ast.Constant)
-            self.assertIs(type(ast.NameConstant(None)), ast.Constant)
-            self.assertIs(type(ast.Ellipsis()), ast.Constant)
-
-        self.assertEqual([str(w.message) for w in wlog], [
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Str is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Bytes is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Ellipsis is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-        ])
-
-    def test_isinstance(self):
-        from ast import Constant
-
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num, Str, Bytes, NameConstant, Ellipsis
-
-        cls_depr_msg = (
-            'ast.{} is deprecated and will be removed in Python 3.14; '
-            'use ast.Constant instead'
-        )
-
-        assertNumDeprecated = partial(
-            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Num")
-        )
-        assertStrDeprecated = partial(
-            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Str")
-        )
-        assertBytesDeprecated = partial(
-            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Bytes")
-        )
-        assertNameConstantDeprecated = partial(
-            self.assertWarnsRegex,
-            DeprecationWarning,
-            cls_depr_msg.format("NameConstant")
-        )
-        assertEllipsisDeprecated = partial(
-            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Ellipsis")
-        )
-
-        for arg in 42, 4.2, 4.2j:
-            with self.subTest(arg=arg):
-                with assertNumDeprecated():
-                    n = Num(arg)
-                with assertNumDeprecated():
-                    self.assertIsInstance(n, Num)
-
-        with assertStrDeprecated():
-            s = Str('42')
-        with assertStrDeprecated():
-            self.assertIsInstance(s, Str)
-
-        with assertBytesDeprecated():
-            b = Bytes(b'42')
-        with assertBytesDeprecated():
-            self.assertIsInstance(b, Bytes)
-
-        for arg in True, False, None:
-            with self.subTest(arg=arg):
-                with assertNameConstantDeprecated():
-                    n = NameConstant(arg)
-                with assertNameConstantDeprecated():
-                    self.assertIsInstance(n, NameConstant)
-
-        with assertEllipsisDeprecated():
-            e = Ellipsis()
-        with assertEllipsisDeprecated():
-            self.assertIsInstance(e, Ellipsis)
-
-        for arg in 42, 4.2, 4.2j:
-            with self.subTest(arg=arg):
-                with assertNumDeprecated():
-                    self.assertIsInstance(Constant(arg), Num)
-
-        with assertStrDeprecated():
-            self.assertIsInstance(Constant('42'), Str)
-
-        with assertBytesDeprecated():
-            self.assertIsInstance(Constant(b'42'), Bytes)
-
-        for arg in True, False, None:
-            with self.subTest(arg=arg):
-                with assertNameConstantDeprecated():
-                    self.assertIsInstance(Constant(arg), NameConstant)
-
-        with assertEllipsisDeprecated():
-            self.assertIsInstance(Constant(...), Ellipsis)
-
-        with assertStrDeprecated():
-            s = Str('42')
-        assertNumDeprecated(self.assertNotIsInstance, s, Num)
-        assertBytesDeprecated(self.assertNotIsInstance, s, Bytes)
-
-        with assertNumDeprecated():
-            n = Num(42)
-        assertStrDeprecated(self.assertNotIsInstance, n, Str)
-        assertNameConstantDeprecated(self.assertNotIsInstance, n, NameConstant)
-        assertEllipsisDeprecated(self.assertNotIsInstance, n, Ellipsis)
-
-        with assertNameConstantDeprecated():
-            n = NameConstant(True)
-        with assertNumDeprecated():
-            self.assertNotIsInstance(n, Num)
-
-        with assertNameConstantDeprecated():
-            n = NameConstant(False)
-        with assertNumDeprecated():
-            self.assertNotIsInstance(n, Num)
-
-        for arg in '42', True, False:
-            with self.subTest(arg=arg):
-                with assertNumDeprecated():
-                    self.assertNotIsInstance(Constant(arg), Num)
-
-        assertStrDeprecated(self.assertNotIsInstance, Constant(42), Str)
-        assertBytesDeprecated(self.assertNotIsInstance, Constant('42'), Bytes)
-        assertNameConstantDeprecated(self.assertNotIsInstance, Constant(42), NameConstant)
-        assertEllipsisDeprecated(self.assertNotIsInstance, Constant(42), Ellipsis)
-        assertNumDeprecated(self.assertNotIsInstance, Constant(None), Num)
-        assertStrDeprecated(self.assertNotIsInstance, Constant(None), Str)
-        assertBytesDeprecated(self.assertNotIsInstance, Constant(None), Bytes)
-        assertNameConstantDeprecated(self.assertNotIsInstance, Constant(1), NameConstant)
-        assertEllipsisDeprecated(self.assertNotIsInstance, Constant(None), Ellipsis)
-
-        class S(str): pass
-        with assertStrDeprecated():
-            self.assertIsInstance(Constant(S('42')), Str)
-        with assertNumDeprecated():
-            self.assertNotIsInstance(Constant(S('42')), Num)
-
-    def test_constant_subclasses_deprecated(self):
-        with warnings.catch_warnings():
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num
-
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            class N(ast.Num):
-                def __init__(self, *args, **kwargs):
-                    super().__init__(*args, **kwargs)
-                    self.z = 'spam'
-            class N2(ast.Num):
-                pass
-
-            n = N(42)
-            self.assertEqual(n.n, 42)
-            self.assertEqual(n.z, 'spam')
-            self.assertIs(type(n), N)
-            self.assertIsInstance(n, N)
-            self.assertIsInstance(n, ast.Num)
-            self.assertNotIsInstance(n, N2)
-            self.assertNotIsInstance(ast.Num(42), N)
-            n = N(n=42)
-            self.assertEqual(n.n, 42)
-            self.assertIs(type(n), N)
-
-        self.assertEqual([str(w.message) for w in wlog], [
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-        ])
-
-    def test_constant_subclasses(self):
-        class N(ast.Constant):
-            def __init__(self, *args, **kwargs):
-                super().__init__(*args, **kwargs)
-                self.z = 'spam'
-        class N2(ast.Constant):
-            pass
-
-        n = N(42)
-        self.assertEqual(n.value, 42)
-        self.assertEqual(n.z, 'spam')
-        self.assertEqual(type(n), N)
-        self.assertTrue(isinstance(n, N))
-        self.assertTrue(isinstance(n, ast.Constant))
-        self.assertFalse(isinstance(n, N2))
-        self.assertFalse(isinstance(ast.Constant(42), N))
-        n = N(value=42)
-        self.assertEqual(n.value, 42)
-        self.assertEqual(type(n), N)
-
-    def test_module(self):
-        body = [ast.Constant(42)]
-        x = ast.Module(body, [])
-        self.assertEqual(x.body, body)
-
-    def test_nodeclasses(self):
-        # Zero arguments constructor explicitly allowed (but deprecated)
-        with self.assertWarns(DeprecationWarning):
-            x = ast.BinOp()
-        self.assertEqual(x._fields, ('left', 'op', 'right'))
-
-        # Random attribute allowed too
-        x.foobarbaz = 5
-        self.assertEqual(x.foobarbaz, 5)
-
-        n1 = ast.Constant(1)
-        n3 = ast.Constant(3)
-        addop = ast.Add()
-        x = ast.BinOp(n1, addop, n3)
-        self.assertEqual(x.left, n1)
-        self.assertEqual(x.op, addop)
-        self.assertEqual(x.right, n3)
-
-        x = ast.BinOp(1, 2, 3)
-        self.assertEqual(x.left, 1)
-        self.assertEqual(x.op, 2)
-        self.assertEqual(x.right, 3)
-
-        x = ast.BinOp(1, 2, 3, lineno=0)
-        self.assertEqual(x.left, 1)
-        self.assertEqual(x.op, 2)
-        self.assertEqual(x.right, 3)
-        self.assertEqual(x.lineno, 0)
-
-        # node raises exception when given too many arguments
-        self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4)
-        # node raises exception when given too many arguments
-        self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4, lineno=0)
-
-        # can set attributes through kwargs too
-        x = ast.BinOp(left=1, op=2, right=3, lineno=0)
-        self.assertEqual(x.left, 1)
-        self.assertEqual(x.op, 2)
-        self.assertEqual(x.right, 3)
-        self.assertEqual(x.lineno, 0)
-
-        # Random kwargs also allowed (but deprecated)
-        with self.assertWarns(DeprecationWarning):
-            x = ast.BinOp(1, 2, 3, foobarbaz=42)
-        self.assertEqual(x.foobarbaz, 42)
-
-    def test_no_fields(self):
-        # this used to fail because Sub._fields was None
-        x = ast.Sub()
-        self.assertEqual(x._fields, ())
-
-    def test_pickling(self):
-        import pickle
-
-        for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
-            for ast in (compile(i, "?", "exec", 0x400) for i in exec_tests):
-                with self.subTest(ast=ast, protocol=protocol):
-                    ast2 = pickle.loads(pickle.dumps(ast, protocol))
-                    self.assertEqual(to_tuple(ast2), to_tuple(ast))
-
-    def test_invalid_sum(self):
-        pos = dict(lineno=2, col_offset=3)
-        m = ast.Module([ast.Expr(ast.expr(**pos), **pos)], [])
-        with self.assertRaises(TypeError) as cm:
-            compile(m, "<test>", "exec")
-        self.assertIn("but got <ast.expr", str(cm.exception))
-
-    def test_invalid_identifier(self):
-        m = ast.Module([ast.Expr(ast.Name(42, ast.Load()))], [])
-        ast.fix_missing_locations(m)
-        with self.assertRaises(TypeError) as cm:
-            compile(m, "<test>", "exec")
-        self.assertIn("identifier must be of type str", str(cm.exception))
-
-    def test_invalid_constant(self):
-        for invalid_constant in int, (1, 2, int), frozenset((1, 2, int)):
-            e = ast.Expression(body=ast.Constant(invalid_constant))
-            ast.fix_missing_locations(e)
-            with self.assertRaisesRegex(
-                TypeError, "invalid type in Constant: type"
-            ):
-                compile(e, "<test>", "eval")
-
-    def test_empty_yield_from(self):
-        # Issue 16546: yield from value is not optional.
-        empty_yield_from = ast.parse("def f():\n yield from g()")
-        empty_yield_from.body[0].body[0].value.value = None
-        with self.assertRaises(ValueError) as cm:
-            compile(empty_yield_from, "<test>", "exec")
-        self.assertIn("field 'value' is required", str(cm.exception))
-
-    @support.cpython_only
-    def test_issue31592(self):
-        # There shouldn't be an assertion failure in case of a bad
-        # unicodedata.normalize().
-        import unicodedata
-        def bad_normalize(*args):
-            return None
-        with support.swap_attr(unicodedata, 'normalize', bad_normalize):
-            self.assertRaises(TypeError, ast.parse, '\u03D5')
-
-    def test_issue18374_binop_col_offset(self):
-        tree = ast.parse('4+5+6+7')
-        parent_binop = tree.body[0].value
-        child_binop = parent_binop.left
-        grandchild_binop = child_binop.left
-        self.assertEqual(parent_binop.col_offset, 0)
-        self.assertEqual(parent_binop.end_col_offset, 7)
-        self.assertEqual(child_binop.col_offset, 0)
-        self.assertEqual(child_binop.end_col_offset, 5)
-        self.assertEqual(grandchild_binop.col_offset, 0)
-        self.assertEqual(grandchild_binop.end_col_offset, 3)
-
-        tree = ast.parse('4+5-\\\n 6-7')
-        parent_binop = tree.body[0].value
-        child_binop = parent_binop.left
-        grandchild_binop = child_binop.left
-        self.assertEqual(parent_binop.col_offset, 0)
-        self.assertEqual(parent_binop.lineno, 1)
-        self.assertEqual(parent_binop.end_col_offset, 4)
-        self.assertEqual(parent_binop.end_lineno, 2)
-
-        self.assertEqual(child_binop.col_offset, 0)
-        self.assertEqual(child_binop.lineno, 1)
-        self.assertEqual(child_binop.end_col_offset, 2)
-        self.assertEqual(child_binop.end_lineno, 2)
-
-        self.assertEqual(grandchild_binop.col_offset, 0)
-        self.assertEqual(grandchild_binop.lineno, 1)
-        self.assertEqual(grandchild_binop.end_col_offset, 3)
-        self.assertEqual(grandchild_binop.end_lineno, 1)
-
-    def test_issue39579_dotted_name_end_col_offset(self):
-        tree = ast.parse('@a.b.c\ndef f(): pass')
-        attr_b = tree.body[0].decorator_list[0].value
-        self.assertEqual(attr_b.end_col_offset, 4)
-
-    def test_ast_asdl_signature(self):
-        self.assertEqual(ast.withitem.__doc__, "withitem(expr context_expr, expr? optional_vars)")
-        self.assertEqual(ast.GtE.__doc__, "GtE")
-        self.assertEqual(ast.Name.__doc__, "Name(identifier id, expr_context ctx)")
-        self.assertEqual(ast.cmpop.__doc__, "cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn")
-        expressions = [f"     | {node.__doc__}" for node in ast.expr.__subclasses__()]
-        expressions[0] = f"expr = {ast.expr.__subclasses__()[0].__doc__}"
-        self.assertCountEqual(ast.expr.__doc__.split("\n"), expressions)
-
-    def test_positional_only_feature_version(self):
-        ast.parse('def foo(x, /): ...', feature_version=(3, 8))
-        ast.parse('def bar(x=1, /): ...', feature_version=(3, 8))
-        with self.assertRaises(SyntaxError):
-            ast.parse('def foo(x, /): ...', feature_version=(3, 7))
-        with self.assertRaises(SyntaxError):
-            ast.parse('def bar(x=1, /): ...', feature_version=(3, 7))
-
-        ast.parse('lambda x, /: ...', feature_version=(3, 8))
-        ast.parse('lambda x=1, /: ...', feature_version=(3, 8))
-        with self.assertRaises(SyntaxError):
-            ast.parse('lambda x, /: ...', feature_version=(3, 7))
-        with self.assertRaises(SyntaxError):
-            ast.parse('lambda x=1, /: ...', feature_version=(3, 7))
-
-    def test_assignment_expression_feature_version(self):
-        ast.parse('(x := 0)', feature_version=(3, 8))
-        with self.assertRaises(SyntaxError):
-            ast.parse('(x := 0)', feature_version=(3, 7))
-
-    def test_conditional_context_managers_parse_with_low_feature_version(self):
-        # regression test for gh-115881
-        ast.parse('with (x() if y else z()): ...', feature_version=(3, 8))
-
-    def test_exception_groups_feature_version(self):
-        code = dedent('''
-        try: ...
-        except* Exception: ...
-        ''')
-        ast.parse(code)
-        with self.assertRaises(SyntaxError):
-            ast.parse(code, feature_version=(3, 10))
-
-    def test_type_params_feature_version(self):
-        samples = [
-            "type X = int",
-            "class X[T]: pass",
-            "def f[T](): pass",
-        ]
-        for sample in samples:
-            with self.subTest(sample):
-                ast.parse(sample)
-                with self.assertRaises(SyntaxError):
-                    ast.parse(sample, feature_version=(3, 11))
-
-    def test_type_params_default_feature_version(self):
-        samples = [
-            "type X[*Ts=int] = int",
-            "class X[T=int]: pass",
-            "def f[**P=int](): pass",
-        ]
-        for sample in samples:
-            with self.subTest(sample):
-                ast.parse(sample)
-                with self.assertRaises(SyntaxError):
-                    ast.parse(sample, feature_version=(3, 12))
-
-    def test_invalid_major_feature_version(self):
-        with self.assertRaises(ValueError):
-            ast.parse('pass', feature_version=(2, 7))
-        with self.assertRaises(ValueError):
-            ast.parse('pass', feature_version=(4, 0))
-
-    def test_constant_as_name(self):
-        for constant in "True", "False", "None":
-            expr = ast.Expression(ast.Name(constant, ast.Load()))
-            ast.fix_missing_locations(expr)
-            with self.assertRaisesRegex(ValueError, f"identifier field can't represent '{constant}' constant"):
-                compile(expr, "<test>", "eval")
-
-    def test_precedence_enum(self):
-        class _Precedence(enum.IntEnum):
-            """Precedence table that originated from python grammar."""
-            NAMED_EXPR = enum.auto()      # <target> := <expr1>
-            TUPLE = enum.auto()           # <expr1>, <expr2>
-            YIELD = enum.auto()           # 'yield', 'yield from'
-            TEST = enum.auto()            # 'if'-'else', 'lambda'
-            OR = enum.auto()              # 'or'
-            AND = enum.auto()             # 'and'
-            NOT = enum.auto()             # 'not'
-            CMP = enum.auto()             # '<', '>', '==', '>=', '<=', '!=',
-                                          # 'in', 'not in', 'is', 'is not'
-            EXPR = enum.auto()
-            BOR = EXPR                    # '|'
-            BXOR = enum.auto()            # '^'
-            BAND = enum.auto()            # '&'
-            SHIFT = enum.auto()           # '<<', '>>'
-            ARITH = enum.auto()           # '+', '-'
-            TERM = enum.auto()            # '*', '@', '/', '%', '//'
-            FACTOR = enum.auto()          # unary '+', '-', '~'
-            POWER = enum.auto()           # '**'
-            AWAIT = enum.auto()           # 'await'
-            ATOM = enum.auto()
-            def next(self):
-                try:
-                    return self.__class__(self + 1)
-                except ValueError:
-                    return self
-        enum._test_simple_enum(_Precedence, ast._Precedence)
-
-    @support.cpython_only
-    def test_ast_recursion_limit(self):
-        fail_depth = support.exceeds_recursion_limit()
-        crash_depth = 100_000
-        success_depth = int(support.get_c_recursion_limit() * 0.8)
-        if _testinternalcapi is not None:
-            remaining = _testinternalcapi.get_c_recursion_remaining()
-            success_depth = min(success_depth, remaining)
-
-        def check_limit(prefix, repeated):
-            expect_ok = prefix + repeated * success_depth
-            ast.parse(expect_ok)
-            for depth in (fail_depth, crash_depth):
-                broken = prefix + repeated * depth
-                details = "Compiling ({!r} + {!r} * {})".format(
-                            prefix, repeated, depth)
-                with self.assertRaises(RecursionError, msg=details):
-                    with support.infinite_recursion():
-                        ast.parse(broken)
-
-        check_limit("a", "()")
-        check_limit("a", ".b")
-        check_limit("a", "[0]")
-        check_limit("a", "*a")
-
-    def test_null_bytes(self):
-        with self.assertRaises(SyntaxError,
-            msg="source code string cannot contain null bytes"):
-            ast.parse("a\0b")
-
-    def assert_none_check(self, node: type[ast.AST], attr: str, source: str) -> None:
-        with self.subTest(f"{node.__name__}.{attr}"):
-            tree = ast.parse(source)
-            found = 0
-            for child in ast.walk(tree):
-                if isinstance(child, node):
-                    setattr(child, attr, None)
-                    found += 1
-            self.assertEqual(found, 1)
-            e = re.escape(f"field '{attr}' is required for {node.__name__}")
-            with self.assertRaisesRegex(ValueError, f"^{e}$"):
-                compile(tree, "<test>", "exec")
-
-    def test_none_checks(self) -> None:
-        tests = [
-            (ast.alias, "name", "import spam as SPAM"),
-            (ast.arg, "arg", "def spam(SPAM): spam"),
-            (ast.comprehension, "target", "[spam for SPAM in spam]"),
-            (ast.comprehension, "iter", "[spam for spam in SPAM]"),
-            (ast.keyword, "value", "spam(**SPAM)"),
-            (ast.match_case, "pattern", "match spam:\n case SPAM: spam"),
-            (ast.withitem, "context_expr", "with SPAM: spam"),
-        ]
-        for node, attr, source in tests:
-            self.assert_none_check(node, attr, source)
-
-class ASTHelpers_Test(unittest.TestCase):
-    maxDiff = None
-
-    def test_parse(self):
-        a = ast.parse('foo(1 + 1)')
-        b = compile('foo(1 + 1)', '<unknown>', 'exec', ast.PyCF_ONLY_AST)
-        self.assertEqual(ast.dump(a), ast.dump(b))
-
-    def test_parse_in_error(self):
-        try:
-            1/0
-        except Exception:
-            with self.assertRaises(SyntaxError) as e:
-                ast.literal_eval(r"'\U'")
-            self.assertIsNotNone(e.exception.__context__)
-
-    def test_dump(self):
-        node = ast.parse('spam(eggs, "and cheese")')
-        self.assertEqual(ast.dump(node),
-            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
-            "args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')]))])"
-        )
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "Module([Expr(Call(Name('spam', Load()), [Name('eggs', Load()), "
-            "Constant('and cheese')]))])"
-        )
-        self.assertEqual(ast.dump(node, include_attributes=True),
-            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
-            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=4), "
-            "args=[Name(id='eggs', ctx=Load(), lineno=1, col_offset=5, "
-            "end_lineno=1, end_col_offset=9), Constant(value='and cheese', "
-            "lineno=1, col_offset=11, end_lineno=1, end_col_offset=23)], "
-            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24), "
-            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24)])"
-        )
-
-    def test_dump_indent(self):
-        node = ast.parse('spam(eggs, "and cheese")')
-        self.assertEqual(ast.dump(node, indent=3), """\
-Module(
-   body=[
-      Expr(
-         value=Call(
-            func=Name(id='spam', ctx=Load()),
-            args=[
-               Name(id='eggs', ctx=Load()),
-               Constant(value='and cheese')]))])""")
-        self.assertEqual(ast.dump(node, annotate_fields=False, indent='\t'), """\
-Module(
-\t[
-\t\tExpr(
-\t\t\tCall(
-\t\t\t\tName('spam', Load()),
-\t\t\t\t[
-\t\t\t\t\tName('eggs', Load()),
-\t\t\t\t\tConstant('and cheese')]))])""")
-        self.assertEqual(ast.dump(node, include_attributes=True, indent=3), """\
-Module(
-   body=[
-      Expr(
-         value=Call(
-            func=Name(
-               id='spam',
-               ctx=Load(),
-               lineno=1,
-               col_offset=0,
-               end_lineno=1,
-               end_col_offset=4),
-            args=[
-               Name(
-                  id='eggs',
-                  ctx=Load(),
-                  lineno=1,
-                  col_offset=5,
-                  end_lineno=1,
-                  end_col_offset=9),
-               Constant(
-                  value='and cheese',
-                  lineno=1,
-                  col_offset=11,
-                  end_lineno=1,
-                  end_col_offset=23)],
-            lineno=1,
-            col_offset=0,
-            end_lineno=1,
-            end_col_offset=24),
-         lineno=1,
-         col_offset=0,
-         end_lineno=1,
-         end_col_offset=24)])""")
-
-    def test_dump_incomplete(self):
-        node = ast.Raise(lineno=3, col_offset=4)
-        self.assertEqual(ast.dump(node),
-            "Raise()"
-        )
-        self.assertEqual(ast.dump(node, include_attributes=True),
-            "Raise(lineno=3, col_offset=4)"
-        )
-        node = ast.Raise(exc=ast.Name(id='e', ctx=ast.Load()), lineno=3, col_offset=4)
-        self.assertEqual(ast.dump(node),
-            "Raise(exc=Name(id='e', ctx=Load()))"
-        )
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "Raise(Name('e', Load()))"
-        )
-        self.assertEqual(ast.dump(node, include_attributes=True),
-            "Raise(exc=Name(id='e', ctx=Load()), lineno=3, col_offset=4)"
-        )
-        self.assertEqual(ast.dump(node, annotate_fields=False, include_attributes=True),
-            "Raise(Name('e', Load()), lineno=3, col_offset=4)"
-        )
-        node = ast.Raise(cause=ast.Name(id='e', ctx=ast.Load()))
-        self.assertEqual(ast.dump(node),
-            "Raise(cause=Name(id='e', ctx=Load()))"
-        )
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "Raise(cause=Name('e', Load()))"
-        )
-        # Arguments:
-        node = ast.arguments(args=[ast.arg("x")])
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "arguments([], [arg('x')])",
-        )
-        node = ast.arguments(posonlyargs=[ast.arg("x")])
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "arguments([arg('x')])",
-        )
-        node = ast.arguments(posonlyargs=[ast.arg("x")], kwonlyargs=[ast.arg('y')])
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "arguments([arg('x')], kwonlyargs=[arg('y')])",
-        )
-        node = ast.arguments(args=[ast.arg("x")], kwonlyargs=[ast.arg('y')])
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "arguments([], [arg('x')], kwonlyargs=[arg('y')])",
-        )
-        node = ast.arguments()
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "arguments()",
-        )
-        # Classes:
-        node = ast.ClassDef(
-            'T',
-            [],
-            [ast.keyword('a', ast.Constant(None))],
-            [],
-            [ast.Name('dataclass', ctx=ast.Load())],
-        )
-        self.assertEqual(ast.dump(node),
-            "ClassDef(name='T', keywords=[keyword(arg='a', value=Constant(value=None))], decorator_list=[Name(id='dataclass', ctx=Load())])",
-        )
-        self.assertEqual(ast.dump(node, annotate_fields=False),
-            "ClassDef('T', [], [keyword('a', Constant(None))], [], [Name('dataclass', Load())])",
-        )
-
-    def test_dump_show_empty(self):
-        def check_node(node, empty, full, **kwargs):
-            with self.subTest(show_empty=False):
-                self.assertEqual(
-                    ast.dump(node, show_empty=False, **kwargs),
-                    empty,
-                )
-            with self.subTest(show_empty=True):
-                self.assertEqual(
-                    ast.dump(node, show_empty=True, **kwargs),
-                    full,
-                )
-
-        def check_text(code, empty, full, **kwargs):
-            check_node(ast.parse(code), empty, full, **kwargs)
-
-        check_node(
-            ast.arguments(),
-            empty="arguments()",
-            full="arguments(posonlyargs=[], args=[], kwonlyargs=[], kw_defaults=[], defaults=[])",
-        )
-
-        check_node(
-            # Corner case: there are no real `Name` instances with `id=''`:
-            ast.Name(id='', ctx=ast.Load()),
-            empty="Name(id='', ctx=Load())",
-            full="Name(id='', ctx=Load())",
-        )
-
-        check_node(
-            ast.MatchSingleton(value=None),
-            empty="MatchSingleton(value=None)",
-            full="MatchSingleton(value=None)",
-        )
-
-        check_node(
-            ast.Constant(value=None),
-            empty="Constant(value=None)",
-            full="Constant(value=None)",
-        )
-
-        check_node(
-            ast.Constant(value=''),
-            empty="Constant(value='')",
-            full="Constant(value='')",
-        )
-
-        check_text(
-            "def a(b: int = 0, *, c): ...",
-            empty="Module(body=[FunctionDef(name='a', args=arguments(args=[arg(arg='b', annotation=Name(id='int', ctx=Load()))], kwonlyargs=[arg(arg='c')], kw_defaults=[None], defaults=[Constant(value=0)]), body=[Expr(value=Constant(value=Ellipsis))])])",
-            full="Module(body=[FunctionDef(name='a', args=arguments(posonlyargs=[], args=[arg(arg='b', annotation=Name(id='int', ctx=Load()))], kwonlyargs=[arg(arg='c')], kw_defaults=[None], defaults=[Constant(value=0)]), body=[Expr(value=Constant(value=Ellipsis))], decorator_list=[], type_params=[])], type_ignores=[])",
-        )
-
-        check_text(
-            "def a(b: int = 0, *, c): ...",
-            empty="Module(body=[FunctionDef(name='a', args=arguments(args=[arg(arg='b', annotation=Name(id='int', ctx=Load(), lineno=1, col_offset=9, end_lineno=1, end_col_offset=12), lineno=1, col_offset=6, end_lineno=1, end_col_offset=12)], kwonlyargs=[arg(arg='c', lineno=1, col_offset=21, end_lineno=1, end_col_offset=22)], kw_defaults=[None], defaults=[Constant(value=0, lineno=1, col_offset=15, end_lineno=1, end_col_offset=16)]), body=[Expr(value=Constant(value=Ellipsis, lineno=1, col_offset=25, end_lineno=1, end_col_offset=28), lineno=1, col_offset=25, end_lineno=1, end_col_offset=28)], lineno=1, col_offset=0, end_lineno=1, end_col_offset=28)])",
-            full="Module(body=[FunctionDef(name='a', args=arguments(posonlyargs=[], args=[arg(arg='b', annotation=Name(id='int', ctx=Load(), lineno=1, col_offset=9, end_lineno=1, end_col_offset=12), lineno=1, col_offset=6, end_lineno=1, end_col_offset=12)], kwonlyargs=[arg(arg='c', lineno=1, col_offset=21, end_lineno=1, end_col_offset=22)], kw_defaults=[None], defaults=[Constant(value=0, lineno=1, col_offset=15, end_lineno=1, end_col_offset=16)]), body=[Expr(value=Constant(value=Ellipsis, lineno=1, col_offset=25, end_lineno=1, end_col_offset=28), lineno=1, col_offset=25, end_lineno=1, end_col_offset=28)], decorator_list=[], type_params=[], lineno=1, col_offset=0, end_lineno=1, end_col_offset=28)], type_ignores=[])",
-            include_attributes=True,
-        )
-
-        check_text(
-            'spam(eggs, "and cheese")',
-            empty="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')]))])",
-            full="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')], keywords=[]))], type_ignores=[])",
-        )
-
-        check_text(
-            'spam(eggs, text="and cheese")',
-            empty="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load())], keywords=[keyword(arg='text', value=Constant(value='and cheese'))]))])",
-            full="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load())], keywords=[keyword(arg='text', value=Constant(value='and cheese'))]))], type_ignores=[])",
-        )
-
-        check_text(
-            "import _ast as ast; from module import sub",
-            empty="Module(body=[Import(names=[alias(name='_ast', asname='ast')]), ImportFrom(module='module', names=[alias(name='sub')], level=0)])",
-            full="Module(body=[Import(names=[alias(name='_ast', asname='ast')]), ImportFrom(module='module', names=[alias(name='sub')], level=0)], type_ignores=[])",
-        )
-
-    def test_copy_location(self):
-        src = ast.parse('1 + 1', mode='eval')
-        src.body.right = ast.copy_location(ast.Constant(2), src.body.right)
-        self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, lineno=1, col_offset=0, '
-            'end_lineno=1, end_col_offset=1), op=Add(), right=Constant(value=2, '
-            'lineno=1, col_offset=4, end_lineno=1, end_col_offset=5), lineno=1, '
-            'col_offset=0, end_lineno=1, end_col_offset=5))'
-        )
-        func = ast.Name('spam', ast.Load())
-        src = ast.Call(col_offset=1, lineno=1, end_lineno=1, end_col_offset=1, func=func)
-        new = ast.copy_location(src, ast.Call(col_offset=None, lineno=None, func=func))
-        self.assertIsNone(new.end_lineno)
-        self.assertIsNone(new.end_col_offset)
-        self.assertEqual(new.lineno, 1)
-        self.assertEqual(new.col_offset, 1)
-
-    def test_fix_missing_locations(self):
-        src = ast.parse('write("spam")')
-        src.body.append(ast.Expr(ast.Call(ast.Name('spam', ast.Load()),
-                                          [ast.Constant('eggs')], [])))
-        self.assertEqual(src, ast.fix_missing_locations(src))
-        self.maxDiff = None
-        self.assertEqual(ast.dump(src, include_attributes=True),
-            "Module(body=[Expr(value=Call(func=Name(id='write', ctx=Load(), "
-            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=5), "
-            "args=[Constant(value='spam', lineno=1, col_offset=6, end_lineno=1, "
-            "end_col_offset=12)], lineno=1, col_offset=0, end_lineno=1, "
-            "end_col_offset=13), lineno=1, col_offset=0, end_lineno=1, "
-            "end_col_offset=13), Expr(value=Call(func=Name(id='spam', ctx=Load(), "
-            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=0), "
-            "args=[Constant(value='eggs', lineno=1, col_offset=0, end_lineno=1, "
-            "end_col_offset=0)], lineno=1, col_offset=0, end_lineno=1, "
-            "end_col_offset=0), lineno=1, col_offset=0, end_lineno=1, end_col_offset=0)])"
-        )
-
-    def test_increment_lineno(self):
-        src = ast.parse('1 + 1', mode='eval')
-        self.assertEqual(ast.increment_lineno(src, n=3), src)
-        self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, '
-            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, '
-            'lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, '
-            'col_offset=0, end_lineno=4, end_col_offset=5))'
-        )
-        # issue10869: do not increment lineno of root twice
-        src = ast.parse('1 + 1', mode='eval')
-        self.assertEqual(ast.increment_lineno(src.body, n=3), src.body)
-        self.assertEqual(ast.dump(src, include_attributes=True),
-            'Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, '
-            'end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, '
-            'lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, '
-            'col_offset=0, end_lineno=4, end_col_offset=5))'
-        )
-        src = ast.Call(
-            func=ast.Name("test", ast.Load()), args=[], keywords=[], lineno=1
-        )
-        self.assertEqual(ast.increment_lineno(src).lineno, 2)
-        self.assertIsNone(ast.increment_lineno(src).end_lineno)
-
-    def test_increment_lineno_on_module(self):
-        src = ast.parse(dedent("""\
-        a = 1
-        b = 2 # type: ignore
-        c = 3
-        d = 4 # type: ignore@tag
-        """), type_comments=True)
-        ast.increment_lineno(src, n=5)
-        self.assertEqual(src.type_ignores[0].lineno, 7)
-        self.assertEqual(src.type_ignores[1].lineno, 9)
-        self.assertEqual(src.type_ignores[1].tag, '@tag')
-
-    def test_iter_fields(self):
-        node = ast.parse('foo()', mode='eval')
-        d = dict(ast.iter_fields(node.body))
-        self.assertEqual(d.pop('func').id, 'foo')
-        self.assertEqual(d, {'keywords': [], 'args': []})
-
-    def test_iter_child_nodes(self):
-        node = ast.parse("spam(23, 42, eggs='leek')", mode='eval')
-        self.assertEqual(len(list(ast.iter_child_nodes(node.body))), 4)
-        iterator = ast.iter_child_nodes(node.body)
-        self.assertEqual(next(iterator).id, 'spam')
-        self.assertEqual(next(iterator).value, 23)
-        self.assertEqual(next(iterator).value, 42)
-        self.assertEqual(ast.dump(next(iterator)),
-            "keyword(arg='eggs', value=Constant(value='leek'))"
-        )
-
-    def test_get_docstring(self):
-        node = ast.parse('"""line one\n  line two"""')
-        self.assertEqual(ast.get_docstring(node),
-                         'line one\nline two')
-
-        node = ast.parse('class foo:\n  """line one\n  line two"""')
-        self.assertEqual(ast.get_docstring(node.body[0]),
-                         'line one\nline two')
-
-        node = ast.parse('def foo():\n  """line one\n  line two"""')
-        self.assertEqual(ast.get_docstring(node.body[0]),
-                         'line one\nline two')
-
-        node = ast.parse('async def foo():\n  """spam\n  ham"""')
-        self.assertEqual(ast.get_docstring(node.body[0]), 'spam\nham')
-
-    def test_get_docstring_none(self):
-        self.assertIsNone(ast.get_docstring(ast.parse('')))
-        node = ast.parse('x = "not docstring"')
-        self.assertIsNone(ast.get_docstring(node))
-        node = ast.parse('def foo():\n  pass')
-        self.assertIsNone(ast.get_docstring(node))
-
-        node = ast.parse('class foo:\n  pass')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-        node = ast.parse('class foo:\n  x = "not docstring"')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-        node = ast.parse('class foo:\n  def bar(self): pass')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-
-        node = ast.parse('def foo():\n  pass')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-        node = ast.parse('def foo():\n  x = "not docstring"')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-
-        node = ast.parse('async def foo():\n  pass')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-        node = ast.parse('async def foo():\n  x = "not docstring"')
-        self.assertIsNone(ast.get_docstring(node.body[0]))
-
-    def test_multi_line_docstring_col_offset_and_lineno_issue16806(self):
-        node = ast.parse(
-            '"""line one\nline two"""\n\n'
-            'def foo():\n  """line one\n  line two"""\n\n'
-            '  def bar():\n    """line one\n    line two"""\n'
-            '  """line one\n  line two"""\n'
-            '"""line one\nline two"""\n\n'
-        )
-        self.assertEqual(node.body[0].col_offset, 0)
-        self.assertEqual(node.body[0].lineno, 1)
-        self.assertEqual(node.body[1].body[0].col_offset, 2)
-        self.assertEqual(node.body[1].body[0].lineno, 5)
-        self.assertEqual(node.body[1].body[1].body[0].col_offset, 4)
-        self.assertEqual(node.body[1].body[1].body[0].lineno, 9)
-        self.assertEqual(node.body[1].body[2].col_offset, 2)
-        self.assertEqual(node.body[1].body[2].lineno, 11)
-        self.assertEqual(node.body[2].col_offset, 0)
-        self.assertEqual(node.body[2].lineno, 13)
-
-    def test_elif_stmt_start_position(self):
-        node = ast.parse('if a:\n    pass\nelif b:\n    pass\n')
-        elif_stmt = node.body[0].orelse[0]
-        self.assertEqual(elif_stmt.lineno, 3)
-        self.assertEqual(elif_stmt.col_offset, 0)
-
-    def test_elif_stmt_start_position_with_else(self):
-        node = ast.parse('if a:\n    pass\nelif b:\n    pass\nelse:\n    pass\n')
-        elif_stmt = node.body[0].orelse[0]
-        self.assertEqual(elif_stmt.lineno, 3)
-        self.assertEqual(elif_stmt.col_offset, 0)
-
-    def test_starred_expr_end_position_within_call(self):
-        node = ast.parse('f(*[0, 1])')
-        starred_expr = node.body[0].value.args[0]
-        self.assertEqual(starred_expr.end_lineno, 1)
-        self.assertEqual(starred_expr.end_col_offset, 9)
-
-    def test_literal_eval(self):
-        self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])
-        self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
-        self.assertEqual(ast.literal_eval('(True, False, None)'), (True, False, None))
-        self.assertEqual(ast.literal_eval('{1, 2, 3}'), {1, 2, 3})
-        self.assertEqual(ast.literal_eval('b"hi"'), b"hi")
-        self.assertEqual(ast.literal_eval('set()'), set())
-        self.assertRaises(ValueError, ast.literal_eval, 'foo()')
-        self.assertEqual(ast.literal_eval('6'), 6)
-        self.assertEqual(ast.literal_eval('+6'), 6)
-        self.assertEqual(ast.literal_eval('-6'), -6)
-        self.assertEqual(ast.literal_eval('3.25'), 3.25)
-        self.assertEqual(ast.literal_eval('+3.25'), 3.25)
-        self.assertEqual(ast.literal_eval('-3.25'), -3.25)
-        self.assertEqual(repr(ast.literal_eval('-0.0')), '-0.0')
-        self.assertRaises(ValueError, ast.literal_eval, '++6')
-        self.assertRaises(ValueError, ast.literal_eval, '+True')
-        self.assertRaises(ValueError, ast.literal_eval, '2+3')
-
-    def test_literal_eval_str_int_limit(self):
-        with support.adjust_int_max_str_digits(4000):
-            ast.literal_eval('3'*4000)  # no error
-            with self.assertRaises(SyntaxError) as err_ctx:
-                ast.literal_eval('3'*4001)
-            self.assertIn('Exceeds the limit ', str(err_ctx.exception))
-            self.assertIn(' Consider hexadecimal ', str(err_ctx.exception))
-
-    def test_literal_eval_complex(self):
-        # Issue #4907
-        self.assertEqual(ast.literal_eval('6j'), 6j)
-        self.assertEqual(ast.literal_eval('-6j'), -6j)
-        self.assertEqual(ast.literal_eval('6.75j'), 6.75j)
-        self.assertEqual(ast.literal_eval('-6.75j'), -6.75j)
-        self.assertEqual(ast.literal_eval('3+6j'), 3+6j)
-        self.assertEqual(ast.literal_eval('-3+6j'), -3+6j)
-        self.assertEqual(ast.literal_eval('3-6j'), 3-6j)
-        self.assertEqual(ast.literal_eval('-3-6j'), -3-6j)
-        self.assertEqual(ast.literal_eval('3.25+6.75j'), 3.25+6.75j)
-        self.assertEqual(ast.literal_eval('-3.25+6.75j'), -3.25+6.75j)
-        self.assertEqual(ast.literal_eval('3.25-6.75j'), 3.25-6.75j)
-        self.assertEqual(ast.literal_eval('-3.25-6.75j'), -3.25-6.75j)
-        self.assertEqual(ast.literal_eval('(3+6j)'), 3+6j)
-        self.assertRaises(ValueError, ast.literal_eval, '-6j+3')
-        self.assertRaises(ValueError, ast.literal_eval, '-6j+3j')
-        self.assertRaises(ValueError, ast.literal_eval, '3+-6j')
-        self.assertRaises(ValueError, ast.literal_eval, '3+(0+6j)')
-        self.assertRaises(ValueError, ast.literal_eval, '-(3+6j)')
-
-    def test_literal_eval_malformed_dict_nodes(self):
-        malformed = ast.Dict(keys=[ast.Constant(1), ast.Constant(2)], values=[ast.Constant(3)])
-        self.assertRaises(ValueError, ast.literal_eval, malformed)
-        malformed = ast.Dict(keys=[ast.Constant(1)], values=[ast.Constant(2), ast.Constant(3)])
-        self.assertRaises(ValueError, ast.literal_eval, malformed)
-
-    def test_literal_eval_trailing_ws(self):
-        self.assertEqual(ast.literal_eval("    -1"), -1)
-        self.assertEqual(ast.literal_eval("\t\t-1"), -1)
-        self.assertEqual(ast.literal_eval(" \t -1"), -1)
-        self.assertRaises(IndentationError, ast.literal_eval, "\n -1")
-
-    def test_literal_eval_malformed_lineno(self):
-        msg = r'malformed node or string on line 3:'
-        with self.assertRaisesRegex(ValueError, msg):
-            ast.literal_eval("{'a': 1,\n'b':2,\n'c':++3,\n'd':4}")
-
-        node = ast.UnaryOp(
-            ast.UAdd(), ast.UnaryOp(ast.UAdd(), ast.Constant(6)))
-        self.assertIsNone(getattr(node, 'lineno', None))
-        msg = r'malformed node or string:'
-        with self.assertRaisesRegex(ValueError, msg):
-            ast.literal_eval(node)
-
-    def test_literal_eval_syntax_errors(self):
-        with self.assertRaisesRegex(SyntaxError, "unexpected indent"):
-            ast.literal_eval(r'''
-                \
-                (\
-            \ ''')
-
-    def test_bad_integer(self):
-        # issue13436: Bad error message with invalid numeric values
-        body = [ast.ImportFrom(module='time',
-                               names=[ast.alias(name='sleep')],
-                               level=None,
-                               lineno=None, col_offset=None)]
-        mod = ast.Module(body, [])
-        with self.assertRaises(ValueError) as cm:
-            compile(mod, 'test', 'exec')
-        self.assertIn("invalid integer value: None", str(cm.exception))
-
-    def test_level_as_none(self):
-        body = [ast.ImportFrom(module='time',
-                               names=[ast.alias(name='sleep',
-                                                lineno=0, col_offset=0)],
-                               level=None,
-                               lineno=0, col_offset=0)]
-        mod = ast.Module(body, [])
-        code = compile(mod, 'test', 'exec')
-        ns = {}
-        exec(code, ns)
-        self.assertIn('sleep', ns)
-
-    def test_recursion_direct(self):
-        e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
-        e.operand = e
-        with self.assertRaises(RecursionError):
-            with support.infinite_recursion():
-                compile(ast.Expression(e), "<test>", "eval")
-
-    def test_recursion_indirect(self):
-        e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
-        f = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
-        e.operand = f
-        f.operand = e
-        with self.assertRaises(RecursionError):
-            with support.infinite_recursion():
-                compile(ast.Expression(e), "<test>", "eval")
-
-
-class ASTValidatorTests(unittest.TestCase):
-
-    def mod(self, mod, msg=None, mode="exec", *, exc=ValueError):
-        mod.lineno = mod.col_offset = 0
-        ast.fix_missing_locations(mod)
-        if msg is None:
-            compile(mod, "<test>", mode)
-        else:
-            with self.assertRaises(exc) as cm:
-                compile(mod, "<test>", mode)
-            self.assertIn(msg, str(cm.exception))
-
-    def expr(self, node, msg=None, *, exc=ValueError):
-        mod = ast.Module([ast.Expr(node)], [])
-        self.mod(mod, msg, exc=exc)
-
-    def stmt(self, stmt, msg=None):
-        mod = ast.Module([stmt], [])
-        self.mod(mod, msg)
-
-    def test_module(self):
-        m = ast.Interactive([ast.Expr(ast.Name("x", ast.Store()))])
-        self.mod(m, "must have Load context", "single")
-        m = ast.Expression(ast.Name("x", ast.Store()))
-        self.mod(m, "must have Load context", "eval")
-
-    def _check_arguments(self, fac, check):
-        def arguments(args=None, posonlyargs=None, vararg=None,
-                      kwonlyargs=None, kwarg=None,
-                      defaults=None, kw_defaults=None):
-            if args is None:
-                args = []
-            if posonlyargs is None:
-                posonlyargs = []
-            if kwonlyargs is None:
-                kwonlyargs = []
-            if defaults is None:
-                defaults = []
-            if kw_defaults is None:
-                kw_defaults = []
-            args = ast.arguments(args, posonlyargs, vararg, kwonlyargs,
-                                 kw_defaults, kwarg, defaults)
-            return fac(args)
-        args = [ast.arg("x", ast.Name("x", ast.Store()))]
-        check(arguments(args=args), "must have Load context")
-        check(arguments(posonlyargs=args), "must have Load context")
-        check(arguments(kwonlyargs=args), "must have Load context")
-        check(arguments(defaults=[ast.Constant(3)]),
-                       "more positional defaults than args")
-        check(arguments(kw_defaults=[ast.Constant(4)]),
-                       "length of kwonlyargs is not the same as kw_defaults")
-        args = [ast.arg("x", ast.Name("x", ast.Load()))]
-        check(arguments(args=args, defaults=[ast.Name("x", ast.Store())]),
-                       "must have Load context")
-        args = [ast.arg("a", ast.Name("x", ast.Load())),
-                ast.arg("b", ast.Name("y", ast.Load()))]
-        check(arguments(kwonlyargs=args,
-                          kw_defaults=[None, ast.Name("x", ast.Store())]),
-                          "must have Load context")
-
-    def test_funcdef(self):
-        a = ast.arguments([], [], None, [], [], None, [])
-        f = ast.FunctionDef("x", a, [], [], None, None, [])
-        self.stmt(f, "empty body on FunctionDef")
-        f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())], None, None, [])
-        self.stmt(f, "must have Load context")
-        f = ast.FunctionDef("x", a, [ast.Pass()], [],
-                            ast.Name("x", ast.Store()), None, [])
-        self.stmt(f, "must have Load context")
-        f = ast.FunctionDef("x", ast.arguments(), [ast.Pass()])
-        self.stmt(f)
-        def fac(args):
-            return ast.FunctionDef("x", args, [ast.Pass()], [], None, None, [])
-        self._check_arguments(fac, self.stmt)
-
-    def test_funcdef_pattern_matching(self):
-        # gh-104799: New fields on FunctionDef should be added at the end
-        def matcher(node):
-            match node:
-                case ast.FunctionDef("foo", ast.arguments(args=[ast.arg("bar")]),
-                                     [ast.Pass()],
-                                     [ast.Name("capybara", ast.Load())],
-                                     ast.Name("pacarana", ast.Load())):
-                    return True
-                case _:
-                    return False
-
-        code = """
-            @capybara
-            def foo(bar) -> pacarana:
-                pass
-        """
-        source = ast.parse(textwrap.dedent(code))
-        funcdef = source.body[0]
-        self.assertIsInstance(funcdef, ast.FunctionDef)
-        self.assertTrue(matcher(funcdef))
-
-    def test_classdef(self):
-        def cls(bases=None, keywords=None, body=None, decorator_list=None, type_params=None):
-            if bases is None:
-                bases = []
-            if keywords is None:
-                keywords = []
-            if body is None:
-                body = [ast.Pass()]
-            if decorator_list is None:
-                decorator_list = []
-            if type_params is None:
-                type_params = []
-            return ast.ClassDef("myclass", bases, keywords,
-                                body, decorator_list, type_params)
-        self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
-                  "must have Load context")
-        self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
-                  "must have Load context")
-        self.stmt(cls(body=[]), "empty body on ClassDef")
-        self.stmt(cls(body=[None]), "None disallowed")
-        self.stmt(cls(decorator_list=[ast.Name("x", ast.Store())]),
-                  "must have Load context")
-
-    def test_delete(self):
-        self.stmt(ast.Delete([]), "empty targets on Delete")
-        self.stmt(ast.Delete([None]), "None disallowed")
-        self.stmt(ast.Delete([ast.Name("x", ast.Load())]),
-                  "must have Del context")
-
-    def test_assign(self):
-        self.stmt(ast.Assign([], ast.Constant(3)), "empty targets on Assign")
-        self.stmt(ast.Assign([None], ast.Constant(3)), "None disallowed")
-        self.stmt(ast.Assign([ast.Name("x", ast.Load())], ast.Constant(3)),
-                  "must have Store context")
-        self.stmt(ast.Assign([ast.Name("x", ast.Store())],
-                                ast.Name("y", ast.Store())),
-                  "must have Load context")
-
-    def test_augassign(self):
-        aug = ast.AugAssign(ast.Name("x", ast.Load()), ast.Add(),
-                            ast.Name("y", ast.Load()))
-        self.stmt(aug, "must have Store context")
-        aug = ast.AugAssign(ast.Name("x", ast.Store()), ast.Add(),
-                            ast.Name("y", ast.Store()))
-        self.stmt(aug, "must have Load context")
-
-    def test_for(self):
-        x = ast.Name("x", ast.Store())
-        y = ast.Name("y", ast.Load())
-        p = ast.Pass()
-        self.stmt(ast.For(x, y, [], []), "empty body on For")
-        self.stmt(ast.For(ast.Name("x", ast.Load()), y, [p], []),
-                  "must have Store context")
-        self.stmt(ast.For(x, ast.Name("y", ast.Store()), [p], []),
-                  "must have Load context")
-        e = ast.Expr(ast.Name("x", ast.Store()))
-        self.stmt(ast.For(x, y, [e], []), "must have Load context")
-        self.stmt(ast.For(x, y, [p], [e]), "must have Load context")
-
-    def test_while(self):
-        self.stmt(ast.While(ast.Constant(3), [], []), "empty body on While")
-        self.stmt(ast.While(ast.Name("x", ast.Store()), [ast.Pass()], []),
-                  "must have Load context")
-        self.stmt(ast.While(ast.Constant(3), [ast.Pass()],
-                             [ast.Expr(ast.Name("x", ast.Store()))]),
-                             "must have Load context")
-
-    def test_if(self):
-        self.stmt(ast.If(ast.Constant(3), [], []), "empty body on If")
-        i = ast.If(ast.Name("x", ast.Store()), [ast.Pass()], [])
-        self.stmt(i, "must have Load context")
-        i = ast.If(ast.Constant(3), [ast.Expr(ast.Name("x", ast.Store()))], [])
-        self.stmt(i, "must have Load context")
-        i = ast.If(ast.Constant(3), [ast.Pass()],
-                   [ast.Expr(ast.Name("x", ast.Store()))])
-        self.stmt(i, "must have Load context")
-
-    def test_with(self):
-        p = ast.Pass()
-        self.stmt(ast.With([], [p]), "empty items on With")
-        i = ast.withitem(ast.Constant(3), None)
-        self.stmt(ast.With([i], []), "empty body on With")
-        i = ast.withitem(ast.Name("x", ast.Store()), None)
-        self.stmt(ast.With([i], [p]), "must have Load context")
-        i = ast.withitem(ast.Constant(3), ast.Name("x", ast.Load()))
-        self.stmt(ast.With([i], [p]), "must have Store context")
-
-    def test_raise(self):
-        r = ast.Raise(None, ast.Constant(3))
-        self.stmt(r, "Raise with cause but no exception")
-        r = ast.Raise(ast.Name("x", ast.Store()), None)
-        self.stmt(r, "must have Load context")
-        r = ast.Raise(ast.Constant(4), ast.Name("x", ast.Store()))
-        self.stmt(r, "must have Load context")
-
-    def test_try(self):
-        p = ast.Pass()
-        t = ast.Try([], [], [], [p])
-        self.stmt(t, "empty body on Try")
-        t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
-        self.stmt(t, "must have Load context")
-        t = ast.Try([p], [], [], [])
-        self.stmt(t, "Try has neither except handlers nor finalbody")
-        t = ast.Try([p], [], [p], [p])
-        self.stmt(t, "Try has orelse but no except handlers")
-        t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
-        self.stmt(t, "empty body on ExceptHandler")
-        e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
-        self.stmt(ast.Try([p], e, [], []), "must have Load context")
-        e = [ast.ExceptHandler(None, "x", [p])]
-        t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
-        self.stmt(t, "must have Load context")
-        t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
-        self.stmt(t, "must have Load context")
-
-    def test_try_star(self):
-        p = ast.Pass()
-        t = ast.TryStar([], [], [], [p])
-        self.stmt(t, "empty body on TryStar")
-        t = ast.TryStar([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
-        self.stmt(t, "must have Load context")
-        t = ast.TryStar([p], [], [], [])
-        self.stmt(t, "TryStar has neither except handlers nor finalbody")
-        t = ast.TryStar([p], [], [p], [p])
-        self.stmt(t, "TryStar has orelse but no except handlers")
-        t = ast.TryStar([p], [ast.ExceptHandler(None, "x", [])], [], [])
-        self.stmt(t, "empty body on ExceptHandler")
-        e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
-        self.stmt(ast.TryStar([p], e, [], []), "must have Load context")
-        e = [ast.ExceptHandler(None, "x", [p])]
-        t = ast.TryStar([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
-        self.stmt(t, "must have Load context")
-        t = ast.TryStar([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
-        self.stmt(t, "must have Load context")
-
-    def test_assert(self):
-        self.stmt(ast.Assert(ast.Name("x", ast.Store()), None),
-                  "must have Load context")
-        assrt = ast.Assert(ast.Name("x", ast.Load()),
-                           ast.Name("y", ast.Store()))
-        self.stmt(assrt, "must have Load context")
-
-    def test_import(self):
-        self.stmt(ast.Import([]), "empty names on Import")
-
-    def test_importfrom(self):
-        imp = ast.ImportFrom(None, [ast.alias("x", None)], -42)
-        self.stmt(imp, "Negative ImportFrom level")
-        self.stmt(ast.ImportFrom(None, [], 0), "empty names on ImportFrom")
-
-    def test_global(self):
-        self.stmt(ast.Global([]), "empty names on Global")
-
-    def test_nonlocal(self):
-        self.stmt(ast.Nonlocal([]), "empty names on Nonlocal")
-
-    def test_expr(self):
-        e = ast.Expr(ast.Name("x", ast.Store()))
-        self.stmt(e, "must have Load context")
-
-    def test_boolop(self):
-        b = ast.BoolOp(ast.And(), [])
-        self.expr(b, "less than 2 values")
-        b = ast.BoolOp(ast.And(), [ast.Constant(3)])
-        self.expr(b, "less than 2 values")
-        b = ast.BoolOp(ast.And(), [ast.Constant(4), None])
-        self.expr(b, "None disallowed")
-        b = ast.BoolOp(ast.And(), [ast.Constant(4), ast.Name("x", ast.Store())])
-        self.expr(b, "must have Load context")
-
-    def test_unaryop(self):
-        u = ast.UnaryOp(ast.Not(), ast.Name("x", ast.Store()))
-        self.expr(u, "must have Load context")
-
-    def test_lambda(self):
-        a = ast.arguments([], [], None, [], [], None, [])
-        self.expr(ast.Lambda(a, ast.Name("x", ast.Store())),
-                  "must have Load context")
-        def fac(args):
-            return ast.Lambda(args, ast.Name("x", ast.Load()))
-        self._check_arguments(fac, self.expr)
-
-    def test_ifexp(self):
-        l = ast.Name("x", ast.Load())
-        s = ast.Name("y", ast.Store())
-        for args in (s, l, l), (l, s, l), (l, l, s):
-            self.expr(ast.IfExp(*args), "must have Load context")
-
-    def test_dict(self):
-        d = ast.Dict([], [ast.Name("x", ast.Load())])
-        self.expr(d, "same number of keys as values")
-        d = ast.Dict([ast.Name("x", ast.Load())], [None])
-        self.expr(d, "None disallowed")
-
-    def test_set(self):
-        self.expr(ast.Set([None]), "None disallowed")
-        s = ast.Set([ast.Name("x", ast.Store())])
-        self.expr(s, "must have Load context")
-
-    def _check_comprehension(self, fac):
-        self.expr(fac([]), "comprehension with no generators")
-        g = ast.comprehension(ast.Name("x", ast.Load()),
-                              ast.Name("x", ast.Load()), [], 0)
-        self.expr(fac([g]), "must have Store context")
-        g = ast.comprehension(ast.Name("x", ast.Store()),
-                              ast.Name("x", ast.Store()), [], 0)
-        self.expr(fac([g]), "must have Load context")
-        x = ast.Name("x", ast.Store())
-        y = ast.Name("y", ast.Load())
-        g = ast.comprehension(x, y, [None], 0)
-        self.expr(fac([g]), "None disallowed")
-        g = ast.comprehension(x, y, [ast.Name("x", ast.Store())], 0)
-        self.expr(fac([g]), "must have Load context")
-
-    def _simple_comp(self, fac):
-        g = ast.comprehension(ast.Name("x", ast.Store()),
-                              ast.Name("x", ast.Load()), [], 0)
-        self.expr(fac(ast.Name("x", ast.Store()), [g]),
-                  "must have Load context")
-        def wrap(gens):
-            return fac(ast.Name("x", ast.Store()), gens)
-        self._check_comprehension(wrap)
-
-    def test_listcomp(self):
-        self._simple_comp(ast.ListComp)
-
-    def test_setcomp(self):
-        self._simple_comp(ast.SetComp)
-
-    def test_generatorexp(self):
-        self._simple_comp(ast.GeneratorExp)
-
-    def test_dictcomp(self):
-        g = ast.comprehension(ast.Name("y", ast.Store()),
-                              ast.Name("p", ast.Load()), [], 0)
-        c = ast.DictComp(ast.Name("x", ast.Store()),
-                         ast.Name("y", ast.Load()), [g])
-        self.expr(c, "must have Load context")
-        c = ast.DictComp(ast.Name("x", ast.Load()),
-                         ast.Name("y", ast.Store()), [g])
-        self.expr(c, "must have Load context")
-        def factory(comps):
-            k = ast.Name("x", ast.Load())
-            v = ast.Name("y", ast.Load())
-            return ast.DictComp(k, v, comps)
-        self._check_comprehension(factory)
-
-    def test_yield(self):
-        self.expr(ast.Yield(ast.Name("x", ast.Store())), "must have Load")
-        self.expr(ast.YieldFrom(ast.Name("x", ast.Store())), "must have Load")
-
-    def test_compare(self):
-        left = ast.Name("x", ast.Load())
-        comp = ast.Compare(left, [ast.In()], [])
-        self.expr(comp, "no comparators")
-        comp = ast.Compare(left, [ast.In()], [ast.Constant(4), ast.Constant(5)])
-        self.expr(comp, "different number of comparators and operands")
-        comp = ast.Compare(ast.Constant("blah"), [ast.In()], [left])
-        self.expr(comp)
-        comp = ast.Compare(left, [ast.In()], [ast.Constant("blah")])
-        self.expr(comp)
-
-    def test_call(self):
-        func = ast.Name("x", ast.Load())
-        args = [ast.Name("y", ast.Load())]
-        keywords = [ast.keyword("w", ast.Name("z", ast.Load()))]
-        call = ast.Call(ast.Name("x", ast.Store()), args, keywords)
-        self.expr(call, "must have Load context")
-        call = ast.Call(func, [None], keywords)
-        self.expr(call, "None disallowed")
-        bad_keywords = [ast.keyword("w", ast.Name("z", ast.Store()))]
-        call = ast.Call(func, args, bad_keywords)
-        self.expr(call, "must have Load context")
-
-    def test_num(self):
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import Num
-
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            class subint(int):
-                pass
-            class subfloat(float):
-                pass
-            class subcomplex(complex):
-                pass
-            for obj in "0", "hello":
-                self.expr(ast.Num(obj))
-            for obj in subint(), subfloat(), subcomplex():
-                self.expr(ast.Num(obj), "invalid type", exc=TypeError)
-
-        self.assertEqual([str(w.message) for w in wlog], [
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-            'ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-        ])
-
-    def test_attribute(self):
-        attr = ast.Attribute(ast.Name("x", ast.Store()), "y", ast.Load())
-        self.expr(attr, "must have Load context")
-
-    def test_subscript(self):
-        sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Constant(3),
-                            ast.Load())
-        self.expr(sub, "must have Load context")
-        x = ast.Name("x", ast.Load())
-        sub = ast.Subscript(x, ast.Name("y", ast.Store()),
-                            ast.Load())
-        self.expr(sub, "must have Load context")
-        s = ast.Name("x", ast.Store())
-        for args in (s, None, None), (None, s, None), (None, None, s):
-            sl = ast.Slice(*args)
-            self.expr(ast.Subscript(x, sl, ast.Load()),
-                      "must have Load context")
-        sl = ast.Tuple([], ast.Load())
-        self.expr(ast.Subscript(x, sl, ast.Load()))
-        sl = ast.Tuple([s], ast.Load())
-        self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")
-
-    def test_starred(self):
-        left = ast.List([ast.Starred(ast.Name("x", ast.Load()), ast.Store())],
-                        ast.Store())
-        assign = ast.Assign([left], ast.Constant(4))
-        self.stmt(assign, "must have Store context")
-
-    def _sequence(self, fac):
-        self.expr(fac([None], ast.Load()), "None disallowed")
-        self.expr(fac([ast.Name("x", ast.Store())], ast.Load()),
-                  "must have Load context")
-
-    def test_list(self):
-        self._sequence(ast.List)
-
-    def test_tuple(self):
-        self._sequence(ast.Tuple)
-
-    def test_nameconstant(self):
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('ignore', '', DeprecationWarning)
-            from ast import NameConstant
-
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            self.expr(ast.NameConstant(4))
-
-        self.assertEqual([str(w.message) for w in wlog], [
-            'ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead',
-        ])
-
-    @support.requires_resource('cpu')
-    def test_stdlib_validates(self):
-        stdlib = os.path.dirname(ast.__file__)
-        tests = [fn for fn in os.listdir(stdlib) if fn.endswith(".py")]
-        tests.extend(["test/test_grammar.py", "test/test_unpack_ex.py"])
-        for module in tests:
-            with self.subTest(module):
-                fn = os.path.join(stdlib, module)
-                with open(fn, "r", encoding="utf-8") as fp:
-                    source = fp.read()
-                mod = ast.parse(source, fn)
-                compile(mod, fn, "exec")
-
-    constant_1 = ast.Constant(1)
-    pattern_1 = ast.MatchValue(constant_1)
-
-    constant_x = ast.Constant('x')
-    pattern_x = ast.MatchValue(constant_x)
-
-    constant_true = ast.Constant(True)
-    pattern_true = ast.MatchSingleton(True)
-
-    name_carter = ast.Name('carter', ast.Load())
-
-    _MATCH_PATTERNS = [
-        ast.MatchValue(
-            ast.Attribute(
-                ast.Attribute(
-                    ast.Name('x', ast.Store()),
-                    'y', ast.Load()
-                ),
-                'z', ast.Load()
-            )
-        ),
-        ast.MatchValue(
-            ast.Attribute(
-                ast.Attribute(
-                    ast.Name('x', ast.Load()),
-                    'y', ast.Store()
-                ),
-                'z', ast.Load()
-            )
-        ),
-        ast.MatchValue(
-            ast.Constant(...)
-        ),
-        ast.MatchValue(
-            ast.Constant(True)
-        ),
-        ast.MatchValue(
-            ast.Constant((1,2,3))
-        ),
-        ast.MatchSingleton('string'),
-        ast.MatchSequence([
-          ast.MatchSingleton('string')
-        ]),
-        ast.MatchSequence(
-            [
-                ast.MatchSequence(
-                    [
-                        ast.MatchSingleton('string')
-                    ]
-                )
-            ]
-        ),
-        ast.MatchMapping(
-            [constant_1, constant_true],
-            [pattern_x]
-        ),
-        ast.MatchMapping(
-            [constant_true, constant_1],
-            [pattern_x, pattern_1],
-            rest='True'
-        ),
-        ast.MatchMapping(
-            [constant_true, ast.Starred(ast.Name('lol', ast.Load()), ast.Load())],
-            [pattern_x, pattern_1],
-            rest='legit'
-        ),
-        ast.MatchClass(
-            ast.Attribute(
-                ast.Attribute(
-                    constant_x,
-                    'y', ast.Load()),
-                'z', ast.Load()),
-            patterns=[], kwd_attrs=[], kwd_patterns=[]
-        ),
-        ast.MatchClass(
-            name_carter,
-            patterns=[],
-            kwd_attrs=['True'],
-            kwd_patterns=[pattern_1]
-        ),
-        ast.MatchClass(
-            name_carter,
-            patterns=[],
-            kwd_attrs=[],
-            kwd_patterns=[pattern_1]
-        ),
-        ast.MatchClass(
-            name_carter,
-            patterns=[ast.MatchSingleton('string')],
-            kwd_attrs=[],
-            kwd_patterns=[]
-        ),
-        ast.MatchClass(
-            name_carter,
-            patterns=[ast.MatchStar()],
-            kwd_attrs=[],
-            kwd_patterns=[]
-        ),
-        ast.MatchClass(
-            name_carter,
-            patterns=[],
-            kwd_attrs=[],
-            kwd_patterns=[ast.MatchStar()]
-        ),
-        ast.MatchClass(
-            constant_true,  # invalid name
-            patterns=[],
-            kwd_attrs=['True'],
-            kwd_patterns=[pattern_1]
-        ),
-        ast.MatchSequence(
-            [
-                ast.MatchStar("True")
-            ]
-        ),
-        ast.MatchAs(
-            name='False'
-        ),
-        ast.MatchOr(
-            []
-        ),
-        ast.MatchOr(
-            [pattern_1]
-        ),
-        ast.MatchOr(
-            [pattern_1, pattern_x, ast.MatchSingleton('xxx')]
-        ),
-        ast.MatchAs(name="_"),
-        ast.MatchStar(name="x"),
-        ast.MatchSequence([ast.MatchStar("_")]),
-        ast.MatchMapping([], [], rest="_"),
-    ]
-
-    def test_match_validation_pattern(self):
-        name_x = ast.Name('x', ast.Load())
-        for pattern in self._MATCH_PATTERNS:
-            with self.subTest(ast.dump(pattern, indent=4)):
-                node = ast.Match(
-                    subject=name_x,
-                    cases = [
-                        ast.match_case(
-                            pattern=pattern,
-                            body = [ast.Pass()]
-                        )
-                    ]
-                )
-                node = ast.fix_missing_locations(node)
-                module = ast.Module([node], [])
-                with self.assertRaises(ValueError):
-                    compile(module, "<test>", "exec")
-
-
-class ConstantTests(unittest.TestCase):
-    """Tests on the ast.Constant node type."""
-
-    def compile_constant(self, value):
-        tree = ast.parse("x = 123")
-
-        node = tree.body[0].value
-        new_node = ast.Constant(value=value)
-        ast.copy_location(new_node, node)
-        tree.body[0].value = new_node
-
-        code = compile(tree, "<string>", "exec")
-
-        ns = {}
-        exec(code, ns)
-        return ns['x']
-
-    def test_validation(self):
-        with self.assertRaises(TypeError) as cm:
-            self.compile_constant([1, 2, 3])
-        self.assertEqual(str(cm.exception),
-                         "got an invalid type in Constant: list")
-
-    def test_singletons(self):
-        for const in (None, False, True, Ellipsis, b'', frozenset()):
-            with self.subTest(const=const):
-                value = self.compile_constant(const)
-                self.assertIs(value, const)
-
-    def test_values(self):
-        nested_tuple = (1,)
-        nested_frozenset = frozenset({1})
-        for level in range(3):
-            nested_tuple = (nested_tuple, 2)
-            nested_frozenset = frozenset({nested_frozenset, 2})
-        values = (123, 123.0, 123j,
-                  "unicode", b'bytes',
-                  tuple("tuple"), frozenset("frozenset"),
-                  nested_tuple, nested_frozenset)
-        for value in values:
-            with self.subTest(value=value):
-                result = self.compile_constant(value)
-                self.assertEqual(result, value)
-
-    def test_assign_to_constant(self):
-        tree = ast.parse("x = 1")
-
-        target = tree.body[0].targets[0]
-        new_target = ast.Constant(value=1)
-        ast.copy_location(new_target, target)
-        tree.body[0].targets[0] = new_target
-
-        with self.assertRaises(ValueError) as cm:
-            compile(tree, "string", "exec")
-        self.assertEqual(str(cm.exception),
-                         "expression which can't be assigned "
-                         "to in Store context")
-
-    def test_get_docstring(self):
-        tree = ast.parse("'docstring'\nx = 1")
-        self.assertEqual(ast.get_docstring(tree), 'docstring')
-
-    def get_load_const(self, tree):
-        # Compile to bytecode, disassemble and get parameter of LOAD_CONST
-        # instructions
-        co = compile(tree, '<string>', 'exec')
-        consts = []
-        for instr in dis.get_instructions(co):
-            if instr.opname == 'LOAD_CONST' or instr.opname == 'RETURN_CONST':
-                consts.append(instr.argval)
-        return consts
-
-    @support.cpython_only
-    def test_load_const(self):
-        consts = [None,
-                  True, False,
-                  124,
-                  2.0,
-                  3j,
-                  "unicode",
-                  b'bytes',
-                  (1, 2, 3)]
-
-        code = '\n'.join(['x={!r}'.format(const) for const in consts])
-        code += '\nx = ...'
-        consts.extend((Ellipsis, None))
-
-        tree = ast.parse(code)
-        self.assertEqual(self.get_load_const(tree),
-                         consts)
-
-        # Replace expression nodes with constants
-        for assign, const in zip(tree.body, consts):
-            assert isinstance(assign, ast.Assign), ast.dump(assign)
-            new_node = ast.Constant(value=const)
-            ast.copy_location(new_node, assign.value)
-            assign.value = new_node
-
-        self.assertEqual(self.get_load_const(tree),
-                         consts)
-
-    def test_literal_eval(self):
-        tree = ast.parse("1 + 2")
-        binop = tree.body[0].value
-
-        new_left = ast.Constant(value=10)
-        ast.copy_location(new_left, binop.left)
-        binop.left = new_left
-
-        new_right = ast.Constant(value=20j)
-        ast.copy_location(new_right, binop.right)
-        binop.right = new_right
-
-        self.assertEqual(ast.literal_eval(binop), 10+20j)
-
-    def test_string_kind(self):
-        c = ast.parse('"x"', mode='eval').body
-        self.assertEqual(c.value, "x")
-        self.assertEqual(c.kind, None)
-
-        c = ast.parse('u"x"', mode='eval').body
-        self.assertEqual(c.value, "x")
-        self.assertEqual(c.kind, "u")
-
-        c = ast.parse('r"x"', mode='eval').body
-        self.assertEqual(c.value, "x")
-        self.assertEqual(c.kind, None)
-
-        c = ast.parse('b"x"', mode='eval').body
-        self.assertEqual(c.value, b"x")
-        self.assertEqual(c.kind, None)
-
-
-class EndPositionTests(unittest.TestCase):
-    """Tests for end position of AST nodes.
-
-    Testing end positions of nodes requires a bit of extra care
-    because of how LL parsers work.
-    """
-    def _check_end_pos(self, ast_node, end_lineno, end_col_offset):
-        self.assertEqual(ast_node.end_lineno, end_lineno)
-        self.assertEqual(ast_node.end_col_offset, end_col_offset)
-
-    def _check_content(self, source, ast_node, content):
-        self.assertEqual(ast.get_source_segment(source, ast_node), content)
-
-    def _parse_value(self, s):
-        # Use duck-typing to support both single expression
-        # and a right hand side of an assignment statement.
-        return ast.parse(s).body[0].value
-
-    def test_lambda(self):
-        s = 'lambda x, *y: None'
-        lam = self._parse_value(s)
-        self._check_content(s, lam.body, 'None')
-        self._check_content(s, lam.args.args[0], 'x')
-        self._check_content(s, lam.args.vararg, 'y')
-
-    def test_func_def(self):
-        s = dedent('''
-            def func(x: int,
-                     *args: str,
-                     z: float = 0,
-                     **kwargs: Any) -> bool:
-                return True
-            ''').strip()
-        fdef = ast.parse(s).body[0]
-        self._check_end_pos(fdef, 5, 15)
-        self._check_content(s, fdef.body[0], 'return True')
-        self._check_content(s, fdef.args.args[0], 'x: int')
-        self._check_content(s, fdef.args.args[0].annotation, 'int')
-        self._check_content(s, fdef.args.kwarg, 'kwargs: Any')
-        self._check_content(s, fdef.args.kwarg.annotation, 'Any')
-
-    def test_call(self):
-        s = 'func(x, y=2, **kw)'
-        call = self._parse_value(s)
-        self._check_content(s, call.func, 'func')
-        self._check_content(s, call.keywords[0].value, '2')
-        self._check_content(s, call.keywords[1].value, 'kw')
-
-    def test_call_noargs(self):
-        s = 'x[0]()'
-        call = self._parse_value(s)
-        self._check_content(s, call.func, 'x[0]')
-        self._check_end_pos(call, 1, 6)
-
-    def test_class_def(self):
-        s = dedent('''
-            class C(A, B):
-                x: int = 0
-        ''').strip()
-        cdef = ast.parse(s).body[0]
-        self._check_end_pos(cdef, 2, 14)
-        self._check_content(s, cdef.bases[1], 'B')
-        self._check_content(s, cdef.body[0], 'x: int = 0')
-
-    def test_class_kw(self):
-        s = 'class S(metaclass=abc.ABCMeta): pass'
-        cdef = ast.parse(s).body[0]
-        self._check_content(s, cdef.keywords[0].value, 'abc.ABCMeta')
-
-    def test_multi_line_str(self):
-        s = dedent('''
-            x = """Some multi-line text.
-
-            It goes on starting from same indent."""
-        ''').strip()
-        assign = ast.parse(s).body[0]
-        self._check_end_pos(assign, 3, 40)
-        self._check_end_pos(assign.value, 3, 40)
-
-    def test_continued_str(self):
-        s = dedent('''
-            x = "first part" \\
-            "second part"
-        ''').strip()
-        assign = ast.parse(s).body[0]
-        self._check_end_pos(assign, 2, 13)
-        self._check_end_pos(assign.value, 2, 13)
-
-    def test_suites(self):
-        # We intentionally put these into the same string to check
-        # that empty lines are not part of the suite.
-        s = dedent('''
-            while True:
-                pass
-
-            if one():
-                x = None
-            elif other():
-                y = None
-            else:
-                z = None
-
-            for x, y in stuff:
-                assert True
-
-            try:
-                raise RuntimeError
-            except TypeError as e:
-                pass
-
-            pass
-        ''').strip()
-        mod = ast.parse(s)
-        while_loop = mod.body[0]
-        if_stmt = mod.body[1]
-        for_loop = mod.body[2]
-        try_stmt = mod.body[3]
-        pass_stmt = mod.body[4]
-
-        self._check_end_pos(while_loop, 2, 8)
-        self._check_end_pos(if_stmt, 9, 12)
-        self._check_end_pos(for_loop, 12, 15)
-        self._check_end_pos(try_stmt, 17, 8)
-        self._check_end_pos(pass_stmt, 19, 4)
-
-        self._check_content(s, while_loop.test, 'True')
-        self._check_content(s, if_stmt.body[0], 'x = None')
-        self._check_content(s, if_stmt.orelse[0].test, 'other()')
-        self._check_content(s, for_loop.target, 'x, y')
-        self._check_content(s, try_stmt.body[0], 'raise RuntimeError')
-        self._check_content(s, try_stmt.handlers[0].type, 'TypeError')
-
-    def test_fstring(self):
-        s = 'x = f"abc {x + y} abc"'
-        fstr = self._parse_value(s)
-        binop = fstr.values[1].value
-        self._check_content(s, binop, 'x + y')
-
-    def test_fstring_multi_line(self):
-        s = dedent('''
-            f"""Some multi-line text.
-            {
-            arg_one
-            +
-            arg_two
-            }
-            It goes on..."""
-        ''').strip()
-        fstr = self._parse_value(s)
-        binop = fstr.values[1].value
-        self._check_end_pos(binop, 5, 7)
-        self._check_content(s, binop.left, 'arg_one')
-        self._check_content(s, binop.right, 'arg_two')
-
-    def test_import_from_multi_line(self):
-        s = dedent('''
-            from x.y.z import (
-                a, b, c as c
-            )
-        ''').strip()
-        imp = ast.parse(s).body[0]
-        self._check_end_pos(imp, 3, 1)
-        self._check_end_pos(imp.names[2], 2, 16)
-
-    def test_slices(self):
-        s1 = 'f()[1, 2] [0]'
-        s2 = 'x[ a.b: c.d]'
-        sm = dedent('''
-            x[ a.b: f () ,
-               g () : c.d
-              ]
-        ''').strip()
-        i1, i2, im = map(self._parse_value, (s1, s2, sm))
-        self._check_content(s1, i1.value, 'f()[1, 2]')
-        self._check_content(s1, i1.value.slice, '1, 2')
-        self._check_content(s2, i2.slice.lower, 'a.b')
-        self._check_content(s2, i2.slice.upper, 'c.d')
-        self._check_content(sm, im.slice.elts[0].upper, 'f ()')
-        self._check_content(sm, im.slice.elts[1].lower, 'g ()')
-        self._check_end_pos(im, 3, 3)
-
-    def test_binop(self):
-        s = dedent('''
-            (1 * 2 + (3 ) +
-                 4
-            )
-        ''').strip()
-        binop = self._parse_value(s)
-        self._check_end_pos(binop, 2, 6)
-        self._check_content(s, binop.right, '4')
-        self._check_content(s, binop.left, '1 * 2 + (3 )')
-        self._check_content(s, binop.left.right, '3')
-
-    def test_boolop(self):
-        s = dedent('''
-            if (one_condition and
-                    (other_condition or yet_another_one)):
-                pass
-        ''').strip()
-        bop = ast.parse(s).body[0].test
-        self._check_end_pos(bop, 2, 44)
-        self._check_content(s, bop.values[1],
-                            'other_condition or yet_another_one')
-
-    def test_tuples(self):
-        s1 = 'x = () ;'
-        s2 = 'x = 1 , ;'
-        s3 = 'x = (1 , 2 ) ;'
-        sm = dedent('''
-            x = (
-                a, b,
-            )
-        ''').strip()
-        t1, t2, t3, tm = map(self._parse_value, (s1, s2, s3, sm))
-        self._check_content(s1, t1, '()')
-        self._check_content(s2, t2, '1 ,')
-        self._check_content(s3, t3, '(1 , 2 )')
-        self._check_end_pos(tm, 3, 1)
-
-    def test_attribute_spaces(self):
-        s = 'func(x. y .z)'
-        call = self._parse_value(s)
-        self._check_content(s, call, s)
-        self._check_content(s, call.args[0], 'x. y .z')
-
-    def test_redundant_parenthesis(self):
-        s = '( ( ( a + b ) ) )'
-        v = ast.parse(s).body[0].value
-        self.assertEqual(type(v).__name__, 'BinOp')
-        self._check_content(s, v, 'a + b')
-        s2 = 'await ' + s
-        v = ast.parse(s2).body[0].value.value
-        self.assertEqual(type(v).__name__, 'BinOp')
-        self._check_content(s2, v, 'a + b')
-
-    def test_trailers_with_redundant_parenthesis(self):
-        tests = (
-            ('( ( ( a ) ) ) ( )', 'Call'),
-            ('( ( ( a ) ) ) ( b )', 'Call'),
-            ('( ( ( a ) ) ) [ b ]', 'Subscript'),
-            ('( ( ( a ) ) ) . b', 'Attribute'),
-        )
-        for s, t in tests:
-            with self.subTest(s):
-                v = ast.parse(s).body[0].value
-                self.assertEqual(type(v).__name__, t)
-                self._check_content(s, v, s)
-                s2 = 'await ' + s
-                v = ast.parse(s2).body[0].value.value
-                self.assertEqual(type(v).__name__, t)
-                self._check_content(s2, v, s)
-
-    def test_displays(self):
-        s1 = '[{}, {1, }, {1, 2,} ]'
-        s2 = '{a: b, f (): g () ,}'
-        c1 = self._parse_value(s1)
-        c2 = self._parse_value(s2)
-        self._check_content(s1, c1.elts[0], '{}')
-        self._check_content(s1, c1.elts[1], '{1, }')
-        self._check_content(s1, c1.elts[2], '{1, 2,}')
-        self._check_content(s2, c2.keys[1], 'f ()')
-        self._check_content(s2, c2.values[1], 'g ()')
-
-    def test_comprehensions(self):
-        s = dedent('''
-            x = [{x for x, y in stuff
-                  if cond.x} for stuff in things]
-        ''').strip()
-        cmp = self._parse_value(s)
-        self._check_end_pos(cmp, 2, 37)
-        self._check_content(s, cmp.generators[0].iter, 'things')
-        self._check_content(s, cmp.elt.generators[0].iter, 'stuff')
-        self._check_content(s, cmp.elt.generators[0].ifs[0], 'cond.x')
-        self._check_content(s, cmp.elt.generators[0].target, 'x, y')
-
-    def test_yield_await(self):
-        s = dedent('''
-            async def f():
-                yield x
-                await y
-        ''').strip()
-        fdef = ast.parse(s).body[0]
-        self._check_content(s, fdef.body[0].value, 'yield x')
-        self._check_content(s, fdef.body[1].value, 'await y')
-
-    def test_source_segment_multi(self):
-        s_orig = dedent('''
-            x = (
-                a, b,
-            ) + ()
-        ''').strip()
-        s_tuple = dedent('''
-            (
-                a, b,
-            )
-        ''').strip()
-        binop = self._parse_value(s_orig)
-        self.assertEqual(ast.get_source_segment(s_orig, binop.left), s_tuple)
-
-    def test_source_segment_padded(self):
-        s_orig = dedent('''
-            class C:
-                def fun(self) -> None:
-                    "ЖЖЖЖЖ"
-        ''').strip()
-        s_method = '    def fun(self) -> None:\n' \
-                   '        "ЖЖЖЖЖ"'
-        cdef = ast.parse(s_orig).body[0]
-        self.assertEqual(ast.get_source_segment(s_orig, cdef.body[0], padded=True),
-                         s_method)
-
-    def test_source_segment_endings(self):
-        s = 'v = 1\r\nw = 1\nx = 1\n\ry = 1\rz = 1\r\n'
-        v, w, x, y, z = ast.parse(s).body
-        self._check_content(s, v, 'v = 1')
-        self._check_content(s, w, 'w = 1')
-        self._check_content(s, x, 'x = 1')
-        self._check_content(s, y, 'y = 1')
-        self._check_content(s, z, 'z = 1')
-
-    def test_source_segment_tabs(self):
-        s = dedent('''
-            class C:
-              \t\f  def fun(self) -> None:
-              \t\f      pass
-        ''').strip()
-        s_method = '  \t\f  def fun(self) -> None:\n' \
-                   '  \t\f      pass'
-
-        cdef = ast.parse(s).body[0]
-        self.assertEqual(ast.get_source_segment(s, cdef.body[0], padded=True), s_method)
-
-    def test_source_segment_newlines(self):
-        s = 'def f():\n  pass\ndef g():\r  pass\r\ndef h():\r\n  pass\r\n'
-        f, g, h = ast.parse(s).body
-        self._check_content(s, f, 'def f():\n  pass')
-        self._check_content(s, g, 'def g():\r  pass')
-        self._check_content(s, h, 'def h():\r\n  pass')
-
-        s = 'def f():\n  a = 1\r  b = 2\r\n  c = 3\n'
-        f = ast.parse(s).body[0]
-        self._check_content(s, f, s.rstrip())
-
-    def test_source_segment_missing_info(self):
-        s = 'v = 1\r\nw = 1\nx = 1\n\ry = 1\r\n'
-        v, w, x, y = ast.parse(s).body
-        del v.lineno
-        del w.end_lineno
-        del x.col_offset
-        del y.end_col_offset
-        self.assertIsNone(ast.get_source_segment(s, v))
-        self.assertIsNone(ast.get_source_segment(s, w))
-        self.assertIsNone(ast.get_source_segment(s, x))
-        self.assertIsNone(ast.get_source_segment(s, y))
-
-class BaseNodeVisitorCases:
-    # Both `NodeVisitor` and `NodeTranformer` must raise these warnings:
-    def test_old_constant_nodes(self):
-        class Visitor(self.visitor_class):
-            def visit_Num(self, node):
-                log.append((node.lineno, 'Num', node.n))
-            def visit_Str(self, node):
-                log.append((node.lineno, 'Str', node.s))
-            def visit_Bytes(self, node):
-                log.append((node.lineno, 'Bytes', node.s))
-            def visit_NameConstant(self, node):
-                log.append((node.lineno, 'NameConstant', node.value))
-            def visit_Ellipsis(self, node):
-                log.append((node.lineno, 'Ellipsis', ...))
-        mod = ast.parse(dedent('''\
-            i = 42
-            f = 4.25
-            c = 4.25j
-            s = 'string'
-            b = b'bytes'
-            t = True
-            n = None
-            e = ...
-            '''))
-        visitor = Visitor()
-        log = []
-        with warnings.catch_warnings(record=True) as wlog:
-            warnings.filterwarnings('always', '', DeprecationWarning)
-            visitor.visit(mod)
-        self.assertEqual(log, [
-            (1, 'Num', 42),
-            (2, 'Num', 4.25),
-            (3, 'Num', 4.25j),
-            (4, 'Str', 'string'),
-            (5, 'Bytes', b'bytes'),
-            (6, 'NameConstant', True),
-            (7, 'NameConstant', None),
-            (8, 'Ellipsis', ...),
-        ])
-        self.assertEqual([str(w.message) for w in wlog], [
-            'visit_Num is deprecated; add visit_Constant',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'visit_Num is deprecated; add visit_Constant',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'visit_Num is deprecated; add visit_Constant',
-            'Attribute n is deprecated and will be removed in Python 3.14; use value instead',
-            'visit_Str is deprecated; add visit_Constant',
-            'Attribute s is deprecated and will be removed in Python 3.14; use value instead',
-            'visit_Bytes is deprecated; add visit_Constant',
-            'Attribute s is deprecated and will be removed in Python 3.14; use value instead',
-            'visit_NameConstant is deprecated; add visit_Constant',
-            'visit_NameConstant is deprecated; add visit_Constant',
-            'visit_Ellipsis is deprecated; add visit_Constant',
-        ])
-
-
-class NodeVisitorTests(BaseNodeVisitorCases, unittest.TestCase):
-    visitor_class = ast.NodeVisitor
-
-
-class NodeTransformerTests(ASTTestMixin, BaseNodeVisitorCases, unittest.TestCase):
-    visitor_class = ast.NodeTransformer
-
-    def assertASTTransformation(self, tranformer_class,
-                                initial_code, expected_code):
-        initial_ast = ast.parse(dedent(initial_code))
-        expected_ast = ast.parse(dedent(expected_code))
-
-        tranformer = tranformer_class()
-        result_ast = ast.fix_missing_locations(tranformer.visit(initial_ast))
-
-        self.assertASTEqual(result_ast, expected_ast)
-
-    def test_node_remove_single(self):
-        code = 'def func(arg) -> SomeType: ...'
-        expected = 'def func(arg): ...'
-
-        # Since `FunctionDef.returns` is defined as a single value, we test
-        # the `if isinstance(old_value, AST):` branch here.
-        class SomeTypeRemover(ast.NodeTransformer):
-            def visit_Name(self, node: ast.Name):
-                self.generic_visit(node)
-                if node.id == 'SomeType':
-                    return None
-                return node
-
-        self.assertASTTransformation(SomeTypeRemover, code, expected)
-
-    def test_node_remove_from_list(self):
-        code = """
-        def func(arg):
-            print(arg)
-            yield arg
-        """
-        expected = """
-        def func(arg):
-            print(arg)
-        """
-
-        # Since `FunctionDef.body` is defined as a list, we test
-        # the `if isinstance(old_value, list):` branch here.
-        class YieldRemover(ast.NodeTransformer):
-            def visit_Expr(self, node: ast.Expr):
-                self.generic_visit(node)
-                if isinstance(node.value, ast.Yield):
-                    return None  # Remove `yield` from a function
-                return node
-
-        self.assertASTTransformation(YieldRemover, code, expected)
-
-    def test_node_return_list(self):
-        code = """
-        class DSL(Base, kw1=True): ...
-        """
-        expected = """
-        class DSL(Base, kw1=True, kw2=True, kw3=False): ...
-        """
-
-        class ExtendKeywords(ast.NodeTransformer):
-            def visit_keyword(self, node: ast.keyword):
-                self.generic_visit(node)
-                if node.arg == 'kw1':
-                    return [
-                        node,
-                        ast.keyword('kw2', ast.Constant(True)),
-                        ast.keyword('kw3', ast.Constant(False)),
-                    ]
-                return node
-
-        self.assertASTTransformation(ExtendKeywords, code, expected)
-
-    def test_node_mutate(self):
-        code = """
-        def func(arg):
-            print(arg)
-        """
-        expected = """
-        def func(arg):
-            log(arg)
-        """
-
-        class PrintToLog(ast.NodeTransformer):
-            def visit_Call(self, node: ast.Call):
-                self.generic_visit(node)
-                if isinstance(node.func, ast.Name) and node.func.id == 'print':
-                    node.func.id = 'log'
-                return node
-
-        self.assertASTTransformation(PrintToLog, code, expected)
-
-    def test_node_replace(self):
-        code = """
-        def func(arg):
-            print(arg)
-        """
-        expected = """
-        def func(arg):
-            logger.log(arg, debug=True)
-        """
-
-        class PrintToLog(ast.NodeTransformer):
-            def visit_Call(self, node: ast.Call):
-                self.generic_visit(node)
-                if isinstance(node.func, ast.Name) and node.func.id == 'print':
-                    return ast.Call(
-                        func=ast.Attribute(
-                            ast.Name('logger', ctx=ast.Load()),
-                            attr='log',
-                            ctx=ast.Load(),
-                        ),
-                        args=node.args,
-                        keywords=[ast.keyword('debug', ast.Constant(True))],
-                    )
-                return node
-
-        self.assertASTTransformation(PrintToLog, code, expected)
-
-
-class ASTConstructorTests(unittest.TestCase):
-    """Test the autogenerated constructors for AST nodes."""
-
-    def test_FunctionDef(self):
-        args = ast.arguments()
-        self.assertEqual(args.args, [])
-        self.assertEqual(args.posonlyargs, [])
-        with self.assertWarnsRegex(DeprecationWarning,
-                                   r"FunctionDef\.__init__ missing 1 required positional argument: 'name'"):
-            node = ast.FunctionDef(args=args)
-        self.assertFalse(hasattr(node, "name"))
-        self.assertEqual(node.decorator_list, [])
-        node = ast.FunctionDef(name='foo', args=args)
-        self.assertEqual(node.name, 'foo')
-        self.assertEqual(node.decorator_list, [])
-
-    def test_custom_subclass_with_no_fields(self):
-        class NoInit(ast.AST):
-            pass
-
-        obj = NoInit()
-        self.assertIsInstance(obj, NoInit)
-        self.assertEqual(obj.__dict__, {})
-
-    def test_fields_but_no_field_types(self):
-        class Fields(ast.AST):
-            _fields = ('a',)
-
-        obj = Fields()
-        with self.assertRaises(AttributeError):
-            obj.a
-        obj = Fields(a=1)
-        self.assertEqual(obj.a, 1)
-
-    def test_fields_and_types(self):
-        class FieldsAndTypes(ast.AST):
-            _fields = ('a',)
-            _field_types = {'a': int | None}
-            a: int | None = None
-
-        obj = FieldsAndTypes()
-        self.assertIs(obj.a, None)
-        obj = FieldsAndTypes(a=1)
-        self.assertEqual(obj.a, 1)
-
-    def test_fields_and_types_no_default(self):
-        class FieldsAndTypesNoDefault(ast.AST):
-            _fields = ('a',)
-            _field_types = {'a': int}
-
-        with self.assertWarnsRegex(DeprecationWarning,
-                                   r"FieldsAndTypesNoDefault\.__init__ missing 1 required positional argument: 'a'\."):
-            obj = FieldsAndTypesNoDefault()
-        with self.assertRaises(AttributeError):
-            obj.a
-        obj = FieldsAndTypesNoDefault(a=1)
-        self.assertEqual(obj.a, 1)
-
-    def test_incomplete_field_types(self):
-        class MoreFieldsThanTypes(ast.AST):
-            _fields = ('a', 'b')
-            _field_types = {'a': int | None}
-            a: int | None = None
-            b: int | None = None
-
-        with self.assertWarnsRegex(
-            DeprecationWarning,
-            r"Field 'b' is missing from MoreFieldsThanTypes\._field_types"
-        ):
-            obj = MoreFieldsThanTypes()
-        self.assertIs(obj.a, None)
-        self.assertIs(obj.b, None)
-
-        obj = MoreFieldsThanTypes(a=1, b=2)
-        self.assertEqual(obj.a, 1)
-        self.assertEqual(obj.b, 2)
-
-    def test_complete_field_types(self):
-        class _AllFieldTypes(ast.AST):
-            _fields = ('a', 'b')
-            _field_types = {'a': int | None, 'b': list[str]}
-            # This must be set explicitly
-            a: int | None = None
-            # This will add an implicit empty list default
-            b: list[str]
-
-        obj = _AllFieldTypes()
-        self.assertIs(obj.a, None)
-        self.assertEqual(obj.b, [])
-
-
-@support.cpython_only
-class ModuleStateTests(unittest.TestCase):
-    # bpo-41194, bpo-41261, bpo-41631: The _ast module uses a global state.
-
-    def check_ast_module(self):
-        # Check that the _ast module still works as expected
-        code = 'x + 1'
-        filename = '<string>'
-        mode = 'eval'
-
-        # Create _ast.AST subclasses instances
-        ast_tree = compile(code, filename, mode, flags=ast.PyCF_ONLY_AST)
-
-        # Call PyAST_Check()
-        code = compile(ast_tree, filename, mode)
-        self.assertIsInstance(code, types.CodeType)
-
-    def test_reload_module(self):
-        # bpo-41194: Importing the _ast module twice must not crash.
-        with support.swap_item(sys.modules, '_ast', None):
-            del sys.modules['_ast']
-            import _ast as ast1
-
-            del sys.modules['_ast']
-            import _ast as ast2
-
-            self.check_ast_module()
-
-        # Unloading the two _ast module instances must not crash.
-        del ast1
-        del ast2
-        support.gc_collect()
-
-        self.check_ast_module()
-
-    def test_sys_modules(self):
-        # bpo-41631: Test reproducing a Mercurial crash when PyAST_Check()
-        # imported the _ast module internally.
-        lazy_mod = object()
-
-        def my_import(name, *args, **kw):
-            sys.modules[name] = lazy_mod
-            return lazy_mod
-
-        with support.swap_item(sys.modules, '_ast', None):
-            del sys.modules['_ast']
-
-            with support.swap_attr(builtins, '__import__', my_import):
-                # Test that compile() does not import the _ast module
-                self.check_ast_module()
-                self.assertNotIn('_ast', sys.modules)
-
-                # Sanity check of the test itself
-                import _ast
-                self.assertIs(_ast, lazy_mod)
-
-    def test_subinterpreter(self):
-        # bpo-41631: Importing and using the _ast module in a subinterpreter
-        # must not crash.
-        code = dedent('''
-            import _ast
-            import ast
-            import gc
-            import sys
-            import types
-
-            # Create _ast.AST subclasses instances and call PyAST_Check()
-            ast_tree = compile('x+1', '<string>', 'eval',
-                               flags=ast.PyCF_ONLY_AST)
-            code = compile(ast_tree, 'string', 'eval')
-            if not isinstance(code, types.CodeType):
-                raise AssertionError
-
-            # Unloading the _ast module must not crash.
-            del ast, _ast
-            del sys.modules['ast'], sys.modules['_ast']
-            gc.collect()
-        ''')
-        res = support.run_in_subinterp(code)
-        self.assertEqual(res, 0)
-
-
-class ASTMainTests(unittest.TestCase):
-    # Tests `ast.main()` function.
-
-    def test_cli_file_input(self):
-        code = "print(1, 2, 3)"
-        expected = ast.dump(ast.parse(code), indent=3)
-
-        with os_helper.temp_dir() as tmp_dir:
-            filename = os.path.join(tmp_dir, "test_module.py")
-            with open(filename, 'w', encoding='utf-8') as f:
-                f.write(code)
-            res, _ = script_helper.run_python_until_end("-m", "ast", filename)
-
-        self.assertEqual(res.err, b"")
-        self.assertEqual(expected.splitlines(),
-                         res.out.decode("utf8").splitlines())
-        self.assertEqual(res.rc, 0)
-
-
-def main():
-    if __name__ != '__main__':
-        return
-    if sys.argv[1:] == ['-g']:
-        for statements, kind in ((exec_tests, "exec"), (single_tests, "single"),
-                                 (eval_tests, "eval")):
-            print(kind+"_results = [")
-            for statement in statements:
-                tree = ast.parse(statement, "?", kind)
-                print("%r," % (to_tuple(tree),))
-            print("]")
-        print("main()")
-        raise SystemExit
-    unittest.main()
-
-#### EVERYTHING BELOW IS GENERATED BY python Lib/test/test_ast.py -g  #####
-exec_results = [
-('Module', [('Expr', (1, 0, 1, 4), ('Constant', (1, 0, 1, 4), None, None))], []),
-('Module', [('Expr', (1, 0, 1, 18), ('Constant', (1, 0, 1, 18), 'module docstring', None))], []),
-('Module', [('FunctionDef', (1, 0, 1, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None, [])], []),
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-('Module', [('FunctionDef', (1, 0, 1, 27), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
-('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
-('Module', [('FunctionDef', (1, 0, 1, 45), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
-('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [('Pass', (1, 8, 1, 12))], [], [])], []),
-('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [], [])], []),
-('Module', [('ClassDef', (1, 0, 1, 21), 'C', [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [], [])], []),
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-('Module', [('Delete', (1, 0, 1, 5), [('Name', (1, 4, 1, 5), 'v', ('Del',))])], []),
-('Module', [('Assign', (1, 0, 1, 5), [('Name', (1, 0, 1, 1), 'v', ('Store',))], ('Constant', (1, 4, 1, 5), 1, None), None)], []),
-('Module', [('Assign', (1, 0, 1, 7), [('Tuple', (1, 0, 1, 3), [('Name', (1, 0, 1, 1), 'a', ('Store',)), ('Name', (1, 2, 1, 3), 'b', ('Store',))], ('Store',))], ('Name', (1, 6, 1, 7), 'c', ('Load',)), None)], []),
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-('Module', [('AugAssign', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'v', ('Store',)), ('Add',), ('Constant', (1, 5, 1, 6), 1, None))], []),
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-('Expression', ('Lambda', (1, 0, 1, 11), ('arguments', [], [], None, [], [], None, []), ('Constant', (1, 7, 1, 11), None, None))),
-('Expression', ('Dict', (1, 0, 1, 7), [('Constant', (1, 2, 1, 3), 1, None)], [('Constant', (1, 4, 1, 5), 2, None)])),
-('Expression', ('Dict', (1, 0, 1, 2), [], [])),
-('Expression', ('Set', (1, 0, 1, 7), [('Constant', (1, 1, 1, 5), None, None)])),
-('Expression', ('Dict', (1, 0, 5, 6), [('Constant', (2, 6, 2, 7), 1, None)], [('Constant', (4, 10, 4, 11), 2, None)])),
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-('Expression', ('SetComp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('List', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
-('Expression', ('GeneratorExp', (1, 0, 1, 20), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 14), [('Name', (1, 11, 1, 12), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'c', ('Load',)), [], 0)])),
-('Expression', ('GeneratorExp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
-('Expression', ('GeneratorExp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('List', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
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-('Expression', ('Call', (1, 0, 1, 17), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('Constant', (1, 2, 1, 3), 1, None), ('Constant', (1, 4, 1, 5), 2, None), ('Starred', (1, 10, 1, 12), ('Name', (1, 11, 1, 12), 'd', ('Load',)), ('Load',))], [('keyword', (1, 6, 1, 9), 'c', ('Constant', (1, 8, 1, 9), 3, None)), ('keyword', (1, 13, 1, 16), None, ('Name', (1, 15, 1, 16), 'e', ('Load',)))])),
-('Expression', ('Call', (1, 0, 1, 10), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('Starred', (1, 2, 1, 9), ('List', (1, 3, 1, 9), [('Constant', (1, 4, 1, 5), 0, None), ('Constant', (1, 7, 1, 8), 1, None)], ('Load',)), ('Load',))], [])),
-('Expression', ('Call', (1, 0, 1, 15), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('GeneratorExp', (1, 1, 1, 15), ('Name', (1, 2, 1, 3), 'a', ('Load',)), [('comprehension', ('Name', (1, 8, 1, 9), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Load',)), [], 0)])], [])),
-('Expression', ('Constant', (1, 0, 1, 2), 10, None)),
-('Expression', ('Constant', (1, 0, 1, 8), 'string', None)),
-('Expression', ('Attribute', (1, 0, 1, 3), ('Name', (1, 0, 1, 1), 'a', ('Load',)), 'b', ('Load',))),
-('Expression', ('Subscript', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Slice', (1, 2, 1, 5), ('Name', (1, 2, 1, 3), 'b', ('Load',)), ('Name', (1, 4, 1, 5), 'c', ('Load',)), None), ('Load',))),
-('Expression', ('Name', (1, 0, 1, 1), 'v', ('Load',))),
-('Expression', ('List', (1, 0, 1, 7), [('Constant', (1, 1, 1, 2), 1, None), ('Constant', (1, 3, 1, 4), 2, None), ('Constant', (1, 5, 1, 6), 3, None)], ('Load',))),
-('Expression', ('List', (1, 0, 1, 2), [], ('Load',))),
-('Expression', ('Tuple', (1, 0, 1, 5), [('Constant', (1, 0, 1, 1), 1, None), ('Constant', (1, 2, 1, 3), 2, None), ('Constant', (1, 4, 1, 5), 3, None)], ('Load',))),
-('Expression', ('Tuple', (1, 0, 1, 7), [('Constant', (1, 1, 1, 2), 1, None), ('Constant', (1, 3, 1, 4), 2, None), ('Constant', (1, 5, 1, 6), 3, None)], ('Load',))),
-('Expression', ('Tuple', (1, 0, 1, 2), [], ('Load',))),
-('Expression', ('Call', (1, 0, 1, 17), ('Attribute', (1, 0, 1, 7), ('Attribute', (1, 0, 1, 5), ('Attribute', (1, 0, 1, 3), ('Name', (1, 0, 1, 1), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',)), 'd', ('Load',)), [('Subscript', (1, 8, 1, 16), ('Attribute', (1, 8, 1, 11), ('Name', (1, 8, 1, 9), 'a', ('Load',)), 'b', ('Load',)), ('Slice', (1, 12, 1, 15), ('Constant', (1, 12, 1, 13), 1, None), ('Constant', (1, 14, 1, 15), 2, None), None), ('Load',))], [])),
-]
-main()
diff --git a/Lib/test/test_ast/__init__.py b/Lib/test/test_ast/__init__.py
new file mode 100644
index 00000000000000..9a89d27ba9f979
--- /dev/null
+++ b/Lib/test/test_ast/__init__.py
@@ -0,0 +1,7 @@
+import os
+
+from test import support
+
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_ast/snippets.py b/Lib/test/test_ast/snippets.py
new file mode 100644
index 00000000000000..28d32b2941f30d
--- /dev/null
+++ b/Lib/test/test_ast/snippets.py
@@ -0,0 +1,601 @@
+import ast
+import sys
+
+from test.test_ast.utils import to_tuple
+
+
+# These tests are compiled through "exec"
+# There should be at least one test per statement
+exec_tests = [
+    # Module docstring
+    "'module docstring'",
+    # FunctionDef
+    "def f(): pass",
+    # FunctionDef with docstring
+    "def f(): 'function docstring'",
+    # FunctionDef with arg
+    "def f(a): pass",
+    # FunctionDef with arg and default value
+    "def f(a=0): pass",
+    # FunctionDef with varargs
+    "def f(*args): pass",
+    # FunctionDef with varargs as TypeVarTuple
+    "def f(*args: *Ts): pass",
+    # FunctionDef with varargs as unpacked Tuple
+    "def f(*args: *tuple[int, ...]): pass",
+    # FunctionDef with varargs as unpacked Tuple *and* TypeVarTuple
+    "def f(*args: *tuple[int, *Ts]): pass",
+    # FunctionDef with kwargs
+    "def f(**kwargs): pass",
+    # FunctionDef with all kind of args and docstring
+    "def f(a, b=1, c=None, d=[], e={}, *args, f=42, **kwargs): 'doc for f()'",
+    # FunctionDef with type annotation on return involving unpacking
+    "def f() -> tuple[*Ts]: pass",
+    "def f() -> tuple[int, *Ts]: pass",
+    "def f() -> tuple[int, *tuple[int, ...]]: pass",
+    # ClassDef
+    "class C:pass",
+    # ClassDef with docstring
+    "class C: 'docstring for class C'",
+    # ClassDef, new style class
+    "class C(object): pass",
+    # Classdef with multiple bases
+    "class C(A, B): pass",
+    # Return
+    "def f():return 1",
+    "def f():return",
+    # Delete
+    "del v",
+    # Assign
+    "v = 1",
+    "a,b = c",
+    "(a,b) = c",
+    "[a,b] = c",
+    "a[b] = c",
+    # AnnAssign with unpacked types
+    "x: tuple[*Ts]",
+    "x: tuple[int, *Ts]",
+    "x: tuple[int, *tuple[str, ...]]",
+    # AugAssign
+    "v += 1",
+    "v -= 1",
+    "v *= 1",
+    "v @= 1",
+    "v /= 1",
+    "v %= 1",
+    "v **= 1",
+    "v <<= 1",
+    "v >>= 1",
+    "v |= 1",
+    "v ^= 1",
+    "v &= 1",
+    "v //= 1",
+    # For
+    "for v in v:pass",
+    # For-Else
+    "for v in v:\n  pass\nelse:\n  pass",
+    # While
+    "while v:pass",
+    # While-Else
+    "while v:\n  pass\nelse:\n  pass",
+    # If-Elif-Else
+    "if v:pass",
+    "if a:\n  pass\nelif b:\n  pass",
+    "if a:\n  pass\nelse:\n  pass",
+    "if a:\n  pass\nelif b:\n  pass\nelse:\n  pass",
+    "if a:\n  pass\nelif b:\n  pass\nelif b:\n  pass\nelif b:\n  pass\nelse:\n  pass",
+    # With
+    "with x: pass",
+    "with x, y: pass",
+    "with x as y: pass",
+    "with x as y, z as q: pass",
+    "with (x as y): pass",
+    "with (x, y): pass",
+    # Raise
+    "raise",
+    "raise Exception('string')",
+    "raise Exception",
+    "raise Exception('string') from None",
+    # TryExcept
+    "try:\n  pass\nexcept Exception:\n  pass",
+    "try:\n  pass\nexcept Exception as exc:\n  pass",
+    # TryFinally
+    "try:\n  pass\nfinally:\n  pass",
+    # TryStarExcept
+    "try:\n  pass\nexcept* Exception:\n  pass",
+    "try:\n  pass\nexcept* Exception as exc:\n  pass",
+    # TryExceptFinallyElse
+    "try:\n  pass\nexcept Exception:\n  pass\nelse:  pass\nfinally:\n  pass",
+    "try:\n  pass\nexcept Exception as exc:\n  pass\nelse:  pass\nfinally:\n  pass",
+    "try:\n  pass\nexcept* Exception as exc:\n  pass\nelse:  pass\nfinally:\n  pass",
+    # Assert
+    "assert v",
+    # Assert with message
+    "assert v, 'message'",
+    # Import
+    "import sys",
+    "import foo as bar",
+    # ImportFrom
+    "from sys import x as y",
+    "from sys import v",
+    # Global
+    "global v",
+    # Expr
+    "1",
+    # Pass,
+    "pass",
+    # Break
+    "for v in v:break",
+    # Continue
+    "for v in v:continue",
+    # for statements with naked tuples (see http://bugs.python.org/issue6704)
+    "for a,b in c: pass",
+    "for (a,b) in c: pass",
+    "for [a,b] in c: pass",
+    # Multiline generator expression (test for .lineno & .col_offset)
+    """(
+    (
+    Aa
+    ,
+       Bb
+    )
+    for
+    Aa
+    ,
+    Bb in Cc
+    )""",
+    # dictcomp
+    "{a : b for w in x for m in p if g}",
+    # dictcomp with naked tuple
+    "{a : b for v,w in x}",
+    # setcomp
+    "{r for l in x if g}",
+    # setcomp with naked tuple
+    "{r for l,m in x}",
+    # AsyncFunctionDef
+    "async def f():\n 'async function'\n await something()",
+    # AsyncFor
+    "async def f():\n async for e in i: 1\n else: 2",
+    # AsyncWith
+    "async def f():\n async with a as b: 1",
+    # PEP 448: Additional Unpacking Generalizations
+    "{**{1:2}, 2:3}",
+    "{*{1, 2}, 3}",
+    # Function with yield (from)
+    "def f(): yield 1",
+    "def f(): yield from []",
+    # Asynchronous comprehensions
+    "async def f():\n [i async for b in c]",
+    # Decorated FunctionDef
+    "@deco1\n@deco2()\n@deco3(1)\ndef f(): pass",
+    # Decorated AsyncFunctionDef
+    "@deco1\n@deco2()\n@deco3(1)\nasync def f(): pass",
+    # Decorated ClassDef
+    "@deco1\n@deco2()\n@deco3(1)\nclass C: pass",
+    # Decorator with generator argument
+    "@deco(a for a in b)\ndef f(): pass",
+    # Decorator with attribute
+    "@a.b.c\ndef f(): pass",
+    # Simple assignment expression
+    "(a := 1)",
+    # Assignment expression in if statement
+    "if a := foo(): pass",
+    # Assignment expression in while
+    "while a := foo(): pass",
+    # Positional-only arguments
+    "def f(a, /,): pass",
+    "def f(a, /, c, d, e): pass",
+    "def f(a, /, c, *, d, e): pass",
+    "def f(a, /, c, *, d, e, **kwargs): pass",
+    # Positional-only arguments with defaults
+    "def f(a=1, /,): pass",
+    "def f(a=1, /, b=2, c=4): pass",
+    "def f(a=1, /, b=2, *, c=4): pass",
+    "def f(a=1, /, b=2, *, c): pass",
+    "def f(a=1, /, b=2, *, c=4, **kwargs): pass",
+    "def f(a=1, /, b=2, *, c, **kwargs): pass",
+    # Type aliases
+    "type X = int",
+    "type X[T] = int",
+    "type X[T, *Ts, **P] = (T, Ts, P)",
+    "type X[T: int, *Ts, **P] = (T, Ts, P)",
+    "type X[T: (int, str), *Ts, **P] = (T, Ts, P)",
+    "type X[T: int = 1, *Ts = 2, **P =3] = (T, Ts, P)",
+    # Generic classes
+    "class X[T]: pass",
+    "class X[T, *Ts, **P]: pass",
+    "class X[T: int, *Ts, **P]: pass",
+    "class X[T: (int, str), *Ts, **P]: pass",
+    "class X[T: int = 1, *Ts = 2, **P = 3]: pass",
+    # Generic functions
+    "def f[T](): pass",
+    "def f[T, *Ts, **P](): pass",
+    "def f[T: int, *Ts, **P](): pass",
+    "def f[T: (int, str), *Ts, **P](): pass",
+    "def f[T: int = 1, *Ts = 2, **P = 3](): pass",
+    # Match
+    "match x:\n\tcase 1:\n\t\tpass",
+    # Match with _
+    "match x:\n\tcase 1:\n\t\tpass\n\tcase _:\n\t\tpass",
+]
+
+# These are compiled through "single"
+# because of overlap with "eval", it just tests what
+# can't be tested with "eval"
+single_tests = [
+    "1+2"
+]
+
+# These are compiled through "eval"
+# It should test all expressions
+eval_tests = [
+  # Constant(value=None)
+  "None",
+  # True
+  "True",
+  # False
+  "False",
+  # BoolOp
+  "a and b",
+  "a or b",
+  # BinOp
+  "a + b",
+  "a - b",
+  "a * b",
+  "a / b",
+  "a @ b",
+  "a // b",
+  "a ** b",
+  "a % b",
+  "a >> b",
+  "a << b",
+  "a ^ b",
+  "a | b",
+  "a & b",
+  # UnaryOp
+  "not v",
+  "+v",
+  "-v",
+  "~v",
+  # Lambda
+  "lambda:None",
+  # Dict
+  "{ 1:2 }",
+  # Empty dict
+  "{}",
+  # Set
+  "{None,}",
+  # Multiline dict (test for .lineno & .col_offset)
+  """{
+      1
+        :
+          2
+     }""",
+  # Multiline list
+  """[
+      1
+       ,
+        1
+     ]""",
+  # Multiline tuple
+  """(
+      1
+       ,
+     )""",
+  # Multiline set
+  """{
+      1
+       ,
+        1
+     }""",
+  # ListComp
+  "[a for b in c if d]",
+  # GeneratorExp
+  "(a for b in c if d)",
+  # SetComp
+  "{a for b in c if d}",
+  # DictComp
+  "{k: v for k, v in c if d}",
+  # Comprehensions with multiple for targets
+  "[(a,b) for a,b in c]",
+  "[(a,b) for (a,b) in c]",
+  "[(a,b) for [a,b] in c]",
+  "{(a,b) for a,b in c}",
+  "{(a,b) for (a,b) in c}",
+  "{(a,b) for [a,b] in c}",
+  "((a,b) for a,b in c)",
+  "((a,b) for (a,b) in c)",
+  "((a,b) for [a,b] in c)",
+  # Async comprehensions - async comprehensions can't work outside an asynchronous function
+  #
+  # Yield - yield expressions can't work outside a function
+  #
+  # Compare
+  "1 < 2 < 3",
+  "a == b",
+  "a <= b",
+  "a >= b",
+  "a != b",
+  "a is b",
+  "a is not b",
+  "a in b",
+  "a not in b",
+  # Call without argument
+  "f()",
+  # Call
+  "f(1,2,c=3,*d,**e)",
+  # Call with multi-character starred
+  "f(*[0, 1])",
+  # Call with a generator argument
+  "f(a for a in b)",
+  # Constant(value=int())
+  "10",
+  # Complex num
+  "1j",
+  # Constant(value=str())
+  "'string'",
+  # Attribute
+  "a.b",
+  # Subscript
+  "a[b:c]",
+  # Name
+  "v",
+  # List
+  "[1,2,3]",
+  # Empty list
+  "[]",
+  # Tuple
+  "1,2,3",
+  # Tuple
+  "(1,2,3)",
+  # Empty tuple
+  "()",
+  # Combination
+  "a.b.c.d(a.b[1:2])",
+  # Slice
+  "[5][1:]",
+  "[5][:1]",
+  "[5][::1]",
+  "[5][1:1:1]",
+  # IfExp
+  "foo() if x else bar()",
+  # JoinedStr and FormattedValue
+  "f'{a}'",
+  "f'{a:.2f}'",
+  "f'{a!r}'",
+  "f'foo({a})'",
+]
+
+
+def main():
+    if __name__ != '__main__':
+        return
+    if sys.argv[1:] == ['-g']:
+        for statements, kind in ((exec_tests, "exec"), (single_tests, "single"),
+                                 (eval_tests, "eval")):
+            print(kind+"_results = [")
+            for statement in statements:
+                tree = ast.parse(statement, "?", kind)
+                print("%r," % (to_tuple(tree),))
+            print("]")
+        print("main()")
+        raise SystemExit
+
+#### EVERYTHING BELOW IS GENERATED BY python Lib/test/test_ast/snippets.py -g  #####
+exec_results = [
+('Module', [('Expr', (1, 0, 1, 18), ('Constant', (1, 0, 1, 18), 'module docstring', None))], []),
+('Module', [('FunctionDef', (1, 0, 1, 13), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 9, 1, 13))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [], [], None, [], [], None, []), [('Expr', (1, 9, 1, 29), ('Constant', (1, 9, 1, 29), 'function docstring', None))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 14), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, []), [('Pass', (1, 10, 1, 14))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 0, None)]), [('Pass', (1, 12, 1, 16))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 18), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 11), 'args', None, None), [], [], None, []), [('Pass', (1, 14, 1, 18))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 23), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 16), 'args', ('Starred', (1, 13, 1, 16), ('Name', (1, 14, 1, 16), 'Ts', ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 19, 1, 23))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Constant', (1, 25, 1, 28), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 36), 'f', ('arguments', [], [], ('arg', (1, 7, 1, 29), 'args', ('Starred', (1, 13, 1, 29), ('Subscript', (1, 14, 1, 29), ('Name', (1, 14, 1, 19), 'tuple', ('Load',)), ('Tuple', (1, 20, 1, 28), [('Name', (1, 20, 1, 23), 'int', ('Load',)), ('Starred', (1, 25, 1, 28), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), ('Load',)), None), [], [], None, []), [('Pass', (1, 32, 1, 36))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 21), 'f', ('arguments', [], [], None, [], [], ('arg', (1, 8, 1, 14), 'kwargs', None, None), []), [('Pass', (1, 17, 1, 21))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 71), 'f', ('arguments', [], [('arg', (1, 6, 1, 7), 'a', None, None), ('arg', (1, 9, 1, 10), 'b', None, None), ('arg', (1, 14, 1, 15), 'c', None, None), ('arg', (1, 22, 1, 23), 'd', None, None), ('arg', (1, 28, 1, 29), 'e', None, None)], ('arg', (1, 35, 1, 39), 'args', None, None), [('arg', (1, 41, 1, 42), 'f', None, None)], [('Constant', (1, 43, 1, 45), 42, None)], ('arg', (1, 49, 1, 55), 'kwargs', None, None), [('Constant', (1, 11, 1, 12), 1, None), ('Constant', (1, 16, 1, 20), None, None), ('List', (1, 24, 1, 26), [], ('Load',)), ('Dict', (1, 30, 1, 32), [], [])]), [('Expr', (1, 58, 1, 71), ('Constant', (1, 58, 1, 71), 'doc for f()', None))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 27), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 23, 1, 27))], [], ('Subscript', (1, 11, 1, 21), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 20), [('Starred', (1, 17, 1, 20), ('Name', (1, 18, 1, 20), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 28, 1, 32))], [], ('Subscript', (1, 11, 1, 26), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 25), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 25), ('Name', (1, 23, 1, 25), 'Ts', ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 45), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 41, 1, 45))], [], ('Subscript', (1, 11, 1, 39), ('Name', (1, 11, 1, 16), 'tuple', ('Load',)), ('Tuple', (1, 17, 1, 38), [('Name', (1, 17, 1, 20), 'int', ('Load',)), ('Starred', (1, 22, 1, 38), ('Subscript', (1, 23, 1, 38), ('Name', (1, 23, 1, 28), 'tuple', ('Load',)), ('Tuple', (1, 29, 1, 37), [('Name', (1, 29, 1, 32), 'int', ('Load',)), ('Constant', (1, 34, 1, 37), Ellipsis, None)], ('Load',)), ('Load',)), ('Load',))], ('Load',)), ('Load',)), None, [])], []),
+('Module', [('ClassDef', (1, 0, 1, 12), 'C', [], [], [('Pass', (1, 8, 1, 12))], [], [])], []),
+('Module', [('ClassDef', (1, 0, 1, 32), 'C', [], [], [('Expr', (1, 9, 1, 32), ('Constant', (1, 9, 1, 32), 'docstring for class C', None))], [], [])], []),
+('Module', [('ClassDef', (1, 0, 1, 21), 'C', [('Name', (1, 8, 1, 14), 'object', ('Load',))], [], [('Pass', (1, 17, 1, 21))], [], [])], []),
+('Module', [('ClassDef', (1, 0, 1, 19), 'C', [('Name', (1, 8, 1, 9), 'A', ('Load',)), ('Name', (1, 11, 1, 12), 'B', ('Load',))], [], [('Pass', (1, 15, 1, 19))], [], [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Return', (1, 8, 1, 16), ('Constant', (1, 15, 1, 16), 1, None))], [], None, None, [])], []),
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+('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 12, 1, 13), 'c', None, None)], None, [('arg', (1, 18, 1, 19), 'd', None, None), ('arg', (1, 21, 1, 22), 'e', None, None)], [None, None], None, []), [('Pass', (1, 25, 1, 29))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 39), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 12, 1, 13), 'c', None, None)], None, [('arg', (1, 18, 1, 19), 'd', None, None), ('arg', (1, 21, 1, 22), 'e', None, None)], [None, None], ('arg', (1, 26, 1, 32), 'kwargs', None, None), []), [('Pass', (1, 35, 1, 39))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 20), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [], None, [], [], None, [('Constant', (1, 8, 1, 9), 1, None)]), [('Pass', (1, 16, 1, 20))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 29), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None), ('arg', (1, 19, 1, 20), 'c', None, None)], None, [], [], None, [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None), ('Constant', (1, 21, 1, 22), 4, None)]), [('Pass', (1, 25, 1, 29))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 32), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [('Constant', (1, 24, 1, 25), 4, None)], None, [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 28, 1, 32))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 30), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [None], None, [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 26, 1, 30))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 42), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [('Constant', (1, 24, 1, 25), 4, None)], ('arg', (1, 29, 1, 35), 'kwargs', None, None), [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 38, 1, 42))], [], None, None, [])], []),
+('Module', [('FunctionDef', (1, 0, 1, 40), 'f', ('arguments', [('arg', (1, 6, 1, 7), 'a', None, None)], [('arg', (1, 14, 1, 15), 'b', None, None)], None, [('arg', (1, 22, 1, 23), 'c', None, None)], [None], ('arg', (1, 27, 1, 33), 'kwargs', None, None), [('Constant', (1, 8, 1, 9), 1, None), ('Constant', (1, 16, 1, 17), 2, None)]), [('Pass', (1, 36, 1, 40))], [], None, None, [])], []),
+('Module', [('TypeAlias', (1, 0, 1, 12), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [], ('Name', (1, 9, 1, 12), 'int', ('Load',)))], []),
+('Module', [('TypeAlias', (1, 0, 1, 15), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [('TypeVar', (1, 7, 1, 8), 'T', None, None)], ('Name', (1, 12, 1, 15), 'int', ('Load',)))], []),
+('Module', [('TypeAlias', (1, 0, 1, 32), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [('TypeVar', (1, 7, 1, 8), 'T', None, None), ('TypeVarTuple', (1, 10, 1, 13), 'Ts', None), ('ParamSpec', (1, 15, 1, 18), 'P', None)], ('Tuple', (1, 22, 1, 32), [('Name', (1, 23, 1, 24), 'T', ('Load',)), ('Name', (1, 26, 1, 28), 'Ts', ('Load',)), ('Name', (1, 30, 1, 31), 'P', ('Load',))], ('Load',)))], []),
+('Module', [('TypeAlias', (1, 0, 1, 37), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [('TypeVar', (1, 7, 1, 13), 'T', ('Name', (1, 10, 1, 13), 'int', ('Load',)), None), ('TypeVarTuple', (1, 15, 1, 18), 'Ts', None), ('ParamSpec', (1, 20, 1, 23), 'P', None)], ('Tuple', (1, 27, 1, 37), [('Name', (1, 28, 1, 29), 'T', ('Load',)), ('Name', (1, 31, 1, 33), 'Ts', ('Load',)), ('Name', (1, 35, 1, 36), 'P', ('Load',))], ('Load',)))], []),
+('Module', [('TypeAlias', (1, 0, 1, 44), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [('TypeVar', (1, 7, 1, 20), 'T', ('Tuple', (1, 10, 1, 20), [('Name', (1, 11, 1, 14), 'int', ('Load',)), ('Name', (1, 16, 1, 19), 'str', ('Load',))], ('Load',)), None), ('TypeVarTuple', (1, 22, 1, 25), 'Ts', None), ('ParamSpec', (1, 27, 1, 30), 'P', None)], ('Tuple', (1, 34, 1, 44), [('Name', (1, 35, 1, 36), 'T', ('Load',)), ('Name', (1, 38, 1, 40), 'Ts', ('Load',)), ('Name', (1, 42, 1, 43), 'P', ('Load',))], ('Load',)))], []),
+('Module', [('TypeAlias', (1, 0, 1, 48), ('Name', (1, 5, 1, 6), 'X', ('Store',)), [('TypeVar', (1, 7, 1, 17), 'T', ('Name', (1, 10, 1, 13), 'int', ('Load',)), ('Constant', (1, 16, 1, 17), 1, None)), ('TypeVarTuple', (1, 19, 1, 26), 'Ts', ('Constant', (1, 25, 1, 26), 2, None)), ('ParamSpec', (1, 28, 1, 34), 'P', ('Constant', (1, 33, 1, 34), 3, None))], ('Tuple', (1, 38, 1, 48), [('Name', (1, 39, 1, 40), 'T', ('Load',)), ('Name', (1, 42, 1, 44), 'Ts', ('Load',)), ('Name', (1, 46, 1, 47), 'P', ('Load',))], ('Load',)))], []),
+('Module', [('ClassDef', (1, 0, 1, 16), 'X', [], [], [('Pass', (1, 12, 1, 16))], [], [('TypeVar', (1, 8, 1, 9), 'T', None, None)])], []),
+('Module', [('ClassDef', (1, 0, 1, 26), 'X', [], [], [('Pass', (1, 22, 1, 26))], [], [('TypeVar', (1, 8, 1, 9), 'T', None, None), ('TypeVarTuple', (1, 11, 1, 14), 'Ts', None), ('ParamSpec', (1, 16, 1, 19), 'P', None)])], []),
+('Module', [('ClassDef', (1, 0, 1, 31), 'X', [], [], [('Pass', (1, 27, 1, 31))], [], [('TypeVar', (1, 8, 1, 14), 'T', ('Name', (1, 11, 1, 14), 'int', ('Load',)), None), ('TypeVarTuple', (1, 16, 1, 19), 'Ts', None), ('ParamSpec', (1, 21, 1, 24), 'P', None)])], []),
+('Module', [('ClassDef', (1, 0, 1, 38), 'X', [], [], [('Pass', (1, 34, 1, 38))], [], [('TypeVar', (1, 8, 1, 21), 'T', ('Tuple', (1, 11, 1, 21), [('Name', (1, 12, 1, 15), 'int', ('Load',)), ('Name', (1, 17, 1, 20), 'str', ('Load',))], ('Load',)), None), ('TypeVarTuple', (1, 23, 1, 26), 'Ts', None), ('ParamSpec', (1, 28, 1, 31), 'P', None)])], []),
+('Module', [('ClassDef', (1, 0, 1, 43), 'X', [], [], [('Pass', (1, 39, 1, 43))], [], [('TypeVar', (1, 8, 1, 18), 'T', ('Name', (1, 11, 1, 14), 'int', ('Load',)), ('Constant', (1, 17, 1, 18), 1, None)), ('TypeVarTuple', (1, 20, 1, 27), 'Ts', ('Constant', (1, 26, 1, 27), 2, None)), ('ParamSpec', (1, 29, 1, 36), 'P', ('Constant', (1, 35, 1, 36), 3, None))])], []),
+('Module', [('FunctionDef', (1, 0, 1, 16), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 12, 1, 16))], [], None, None, [('TypeVar', (1, 6, 1, 7), 'T', None, None)])], []),
+('Module', [('FunctionDef', (1, 0, 1, 26), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 22, 1, 26))], [], None, None, [('TypeVar', (1, 6, 1, 7), 'T', None, None), ('TypeVarTuple', (1, 9, 1, 12), 'Ts', None), ('ParamSpec', (1, 14, 1, 17), 'P', None)])], []),
+('Module', [('FunctionDef', (1, 0, 1, 31), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 27, 1, 31))], [], None, None, [('TypeVar', (1, 6, 1, 12), 'T', ('Name', (1, 9, 1, 12), 'int', ('Load',)), None), ('TypeVarTuple', (1, 14, 1, 17), 'Ts', None), ('ParamSpec', (1, 19, 1, 22), 'P', None)])], []),
+('Module', [('FunctionDef', (1, 0, 1, 38), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 34, 1, 38))], [], None, None, [('TypeVar', (1, 6, 1, 19), 'T', ('Tuple', (1, 9, 1, 19), [('Name', (1, 10, 1, 13), 'int', ('Load',)), ('Name', (1, 15, 1, 18), 'str', ('Load',))], ('Load',)), None), ('TypeVarTuple', (1, 21, 1, 24), 'Ts', None), ('ParamSpec', (1, 26, 1, 29), 'P', None)])], []),
+('Module', [('FunctionDef', (1, 0, 1, 43), 'f', ('arguments', [], [], None, [], [], None, []), [('Pass', (1, 39, 1, 43))], [], None, None, [('TypeVar', (1, 6, 1, 16), 'T', ('Name', (1, 9, 1, 12), 'int', ('Load',)), ('Constant', (1, 15, 1, 16), 1, None)), ('TypeVarTuple', (1, 18, 1, 25), 'Ts', ('Constant', (1, 24, 1, 25), 2, None)), ('ParamSpec', (1, 27, 1, 34), 'P', ('Constant', (1, 33, 1, 34), 3, None))])], []),
+('Module', [('Match', (1, 0, 3, 6), ('Name', (1, 6, 1, 7), 'x', ('Load',)), [('match_case', ('MatchValue', (2, 6, 2, 7), ('Constant', (2, 6, 2, 7), 1, None)), None, [('Pass', (3, 2, 3, 6))])])], []),
+('Module', [('Match', (1, 0, 5, 6), ('Name', (1, 6, 1, 7), 'x', ('Load',)), [('match_case', ('MatchValue', (2, 6, 2, 7), ('Constant', (2, 6, 2, 7), 1, None)), None, [('Pass', (3, 2, 3, 6))]), ('match_case', ('MatchAs', (4, 6, 4, 7), None, None), None, [('Pass', (5, 2, 5, 6))])])], []),
+]
+single_results = [
+('Interactive', [('Expr', (1, 0, 1, 3), ('BinOp', (1, 0, 1, 3), ('Constant', (1, 0, 1, 1), 1, None), ('Add',), ('Constant', (1, 2, 1, 3), 2, None)))]),
+]
+eval_results = [
+('Expression', ('Constant', (1, 0, 1, 4), None, None)),
+('Expression', ('Constant', (1, 0, 1, 4), True, None)),
+('Expression', ('Constant', (1, 0, 1, 5), False, None)),
+('Expression', ('BoolOp', (1, 0, 1, 7), ('And',), [('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Name', (1, 6, 1, 7), 'b', ('Load',))])),
+('Expression', ('BoolOp', (1, 0, 1, 6), ('Or',), [('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Add',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Sub',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Mult',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Div',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('MatMult',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('FloorDiv',), ('Name', (1, 5, 1, 6), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Pow',), ('Name', (1, 5, 1, 6), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Mod',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('RShift',), ('Name', (1, 5, 1, 6), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('LShift',), ('Name', (1, 5, 1, 6), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('BitXor',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('BitOr',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('BinOp', (1, 0, 1, 5), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('BitAnd',), ('Name', (1, 4, 1, 5), 'b', ('Load',)))),
+('Expression', ('UnaryOp', (1, 0, 1, 5), ('Not',), ('Name', (1, 4, 1, 5), 'v', ('Load',)))),
+('Expression', ('UnaryOp', (1, 0, 1, 2), ('UAdd',), ('Name', (1, 1, 1, 2), 'v', ('Load',)))),
+('Expression', ('UnaryOp', (1, 0, 1, 2), ('USub',), ('Name', (1, 1, 1, 2), 'v', ('Load',)))),
+('Expression', ('UnaryOp', (1, 0, 1, 2), ('Invert',), ('Name', (1, 1, 1, 2), 'v', ('Load',)))),
+('Expression', ('Lambda', (1, 0, 1, 11), ('arguments', [], [], None, [], [], None, []), ('Constant', (1, 7, 1, 11), None, None))),
+('Expression', ('Dict', (1, 0, 1, 7), [('Constant', (1, 2, 1, 3), 1, None)], [('Constant', (1, 4, 1, 5), 2, None)])),
+('Expression', ('Dict', (1, 0, 1, 2), [], [])),
+('Expression', ('Set', (1, 0, 1, 7), [('Constant', (1, 1, 1, 5), None, None)])),
+('Expression', ('Dict', (1, 0, 5, 6), [('Constant', (2, 6, 2, 7), 1, None)], [('Constant', (4, 10, 4, 11), 2, None)])),
+('Expression', ('List', (1, 0, 5, 6), [('Constant', (2, 6, 2, 7), 1, None), ('Constant', (4, 8, 4, 9), 1, None)], ('Load',))),
+('Expression', ('Tuple', (1, 0, 4, 6), [('Constant', (2, 6, 2, 7), 1, None)], ('Load',))),
+('Expression', ('Set', (1, 0, 5, 6), [('Constant', (2, 6, 2, 7), 1, None), ('Constant', (4, 8, 4, 9), 1, None)])),
+('Expression', ('ListComp', (1, 0, 1, 19), ('Name', (1, 1, 1, 2), 'a', ('Load',)), [('comprehension', ('Name', (1, 7, 1, 8), 'b', ('Store',)), ('Name', (1, 12, 1, 13), 'c', ('Load',)), [('Name', (1, 17, 1, 18), 'd', ('Load',))], 0)])),
+('Expression', ('GeneratorExp', (1, 0, 1, 19), ('Name', (1, 1, 1, 2), 'a', ('Load',)), [('comprehension', ('Name', (1, 7, 1, 8), 'b', ('Store',)), ('Name', (1, 12, 1, 13), 'c', ('Load',)), [('Name', (1, 17, 1, 18), 'd', ('Load',))], 0)])),
+('Expression', ('SetComp', (1, 0, 1, 19), ('Name', (1, 1, 1, 2), 'a', ('Load',)), [('comprehension', ('Name', (1, 7, 1, 8), 'b', ('Store',)), ('Name', (1, 12, 1, 13), 'c', ('Load',)), [('Name', (1, 17, 1, 18), 'd', ('Load',))], 0)])),
+('Expression', ('DictComp', (1, 0, 1, 25), ('Name', (1, 1, 1, 2), 'k', ('Load',)), ('Name', (1, 4, 1, 5), 'v', ('Load',)), [('comprehension', ('Tuple', (1, 10, 1, 14), [('Name', (1, 10, 1, 11), 'k', ('Store',)), ('Name', (1, 13, 1, 14), 'v', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'c', ('Load',)), [('Name', (1, 23, 1, 24), 'd', ('Load',))], 0)])),
+('Expression', ('ListComp', (1, 0, 1, 20), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 14), [('Name', (1, 11, 1, 12), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'c', ('Load',)), [], 0)])),
+('Expression', ('ListComp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('ListComp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('List', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('SetComp', (1, 0, 1, 20), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 14), [('Name', (1, 11, 1, 12), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'c', ('Load',)), [], 0)])),
+('Expression', ('SetComp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('SetComp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('List', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('GeneratorExp', (1, 0, 1, 20), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 14), [('Name', (1, 11, 1, 12), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 18, 1, 19), 'c', ('Load',)), [], 0)])),
+('Expression', ('GeneratorExp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('GeneratorExp', (1, 0, 1, 22), ('Tuple', (1, 1, 1, 6), [('Name', (1, 2, 1, 3), 'a', ('Load',)), ('Name', (1, 4, 1, 5), 'b', ('Load',))], ('Load',)), [('comprehension', ('List', (1, 11, 1, 16), [('Name', (1, 12, 1, 13), 'a', ('Store',)), ('Name', (1, 14, 1, 15), 'b', ('Store',))], ('Store',)), ('Name', (1, 20, 1, 21), 'c', ('Load',)), [], 0)])),
+('Expression', ('Compare', (1, 0, 1, 9), ('Constant', (1, 0, 1, 1), 1, None), [('Lt',), ('Lt',)], [('Constant', (1, 4, 1, 5), 2, None), ('Constant', (1, 8, 1, 9), 3, None)])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('Eq',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('LtE',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('GtE',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('NotEq',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('Is',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 10), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('IsNot',)], [('Name', (1, 9, 1, 10), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('In',)], [('Name', (1, 5, 1, 6), 'b', ('Load',))])),
+('Expression', ('Compare', (1, 0, 1, 10), ('Name', (1, 0, 1, 1), 'a', ('Load',)), [('NotIn',)], [('Name', (1, 9, 1, 10), 'b', ('Load',))])),
+('Expression', ('Call', (1, 0, 1, 3), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [], [])),
+('Expression', ('Call', (1, 0, 1, 17), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('Constant', (1, 2, 1, 3), 1, None), ('Constant', (1, 4, 1, 5), 2, None), ('Starred', (1, 10, 1, 12), ('Name', (1, 11, 1, 12), 'd', ('Load',)), ('Load',))], [('keyword', (1, 6, 1, 9), 'c', ('Constant', (1, 8, 1, 9), 3, None)), ('keyword', (1, 13, 1, 16), None, ('Name', (1, 15, 1, 16), 'e', ('Load',)))])),
+('Expression', ('Call', (1, 0, 1, 10), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('Starred', (1, 2, 1, 9), ('List', (1, 3, 1, 9), [('Constant', (1, 4, 1, 5), 0, None), ('Constant', (1, 7, 1, 8), 1, None)], ('Load',)), ('Load',))], [])),
+('Expression', ('Call', (1, 0, 1, 15), ('Name', (1, 0, 1, 1), 'f', ('Load',)), [('GeneratorExp', (1, 1, 1, 15), ('Name', (1, 2, 1, 3), 'a', ('Load',)), [('comprehension', ('Name', (1, 8, 1, 9), 'a', ('Store',)), ('Name', (1, 13, 1, 14), 'b', ('Load',)), [], 0)])], [])),
+('Expression', ('Constant', (1, 0, 1, 2), 10, None)),
+('Expression', ('Constant', (1, 0, 1, 2), 1j, None)),
+('Expression', ('Constant', (1, 0, 1, 8), 'string', None)),
+('Expression', ('Attribute', (1, 0, 1, 3), ('Name', (1, 0, 1, 1), 'a', ('Load',)), 'b', ('Load',))),
+('Expression', ('Subscript', (1, 0, 1, 6), ('Name', (1, 0, 1, 1), 'a', ('Load',)), ('Slice', (1, 2, 1, 5), ('Name', (1, 2, 1, 3), 'b', ('Load',)), ('Name', (1, 4, 1, 5), 'c', ('Load',)), None), ('Load',))),
+('Expression', ('Name', (1, 0, 1, 1), 'v', ('Load',))),
+('Expression', ('List', (1, 0, 1, 7), [('Constant', (1, 1, 1, 2), 1, None), ('Constant', (1, 3, 1, 4), 2, None), ('Constant', (1, 5, 1, 6), 3, None)], ('Load',))),
+('Expression', ('List', (1, 0, 1, 2), [], ('Load',))),
+('Expression', ('Tuple', (1, 0, 1, 5), [('Constant', (1, 0, 1, 1), 1, None), ('Constant', (1, 2, 1, 3), 2, None), ('Constant', (1, 4, 1, 5), 3, None)], ('Load',))),
+('Expression', ('Tuple', (1, 0, 1, 7), [('Constant', (1, 1, 1, 2), 1, None), ('Constant', (1, 3, 1, 4), 2, None), ('Constant', (1, 5, 1, 6), 3, None)], ('Load',))),
+('Expression', ('Tuple', (1, 0, 1, 2), [], ('Load',))),
+('Expression', ('Call', (1, 0, 1, 17), ('Attribute', (1, 0, 1, 7), ('Attribute', (1, 0, 1, 5), ('Attribute', (1, 0, 1, 3), ('Name', (1, 0, 1, 1), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',)), 'd', ('Load',)), [('Subscript', (1, 8, 1, 16), ('Attribute', (1, 8, 1, 11), ('Name', (1, 8, 1, 9), 'a', ('Load',)), 'b', ('Load',)), ('Slice', (1, 12, 1, 15), ('Constant', (1, 12, 1, 13), 1, None), ('Constant', (1, 14, 1, 15), 2, None), None), ('Load',))], [])),
+('Expression', ('Subscript', (1, 0, 1, 7), ('List', (1, 0, 1, 3), [('Constant', (1, 1, 1, 2), 5, None)], ('Load',)), ('Slice', (1, 4, 1, 6), ('Constant', (1, 4, 1, 5), 1, None), None, None), ('Load',))),
+('Expression', ('Subscript', (1, 0, 1, 7), ('List', (1, 0, 1, 3), [('Constant', (1, 1, 1, 2), 5, None)], ('Load',)), ('Slice', (1, 4, 1, 6), None, ('Constant', (1, 5, 1, 6), 1, None), None), ('Load',))),
+('Expression', ('Subscript', (1, 0, 1, 8), ('List', (1, 0, 1, 3), [('Constant', (1, 1, 1, 2), 5, None)], ('Load',)), ('Slice', (1, 4, 1, 7), None, None, ('Constant', (1, 6, 1, 7), 1, None)), ('Load',))),
+('Expression', ('Subscript', (1, 0, 1, 10), ('List', (1, 0, 1, 3), [('Constant', (1, 1, 1, 2), 5, None)], ('Load',)), ('Slice', (1, 4, 1, 9), ('Constant', (1, 4, 1, 5), 1, None), ('Constant', (1, 6, 1, 7), 1, None), ('Constant', (1, 8, 1, 9), 1, None)), ('Load',))),
+('Expression', ('IfExp', (1, 0, 1, 21), ('Name', (1, 9, 1, 10), 'x', ('Load',)), ('Call', (1, 0, 1, 5), ('Name', (1, 0, 1, 3), 'foo', ('Load',)), [], []), ('Call', (1, 16, 1, 21), ('Name', (1, 16, 1, 19), 'bar', ('Load',)), [], []))),
+('Expression', ('JoinedStr', (1, 0, 1, 6), [('FormattedValue', (1, 2, 1, 5), ('Name', (1, 3, 1, 4), 'a', ('Load',)), -1, None)])),
+('Expression', ('JoinedStr', (1, 0, 1, 10), [('FormattedValue', (1, 2, 1, 9), ('Name', (1, 3, 1, 4), 'a', ('Load',)), -1, ('JoinedStr', (1, 4, 1, 8), [('Constant', (1, 5, 1, 8), '.2f', None)]))])),
+('Expression', ('JoinedStr', (1, 0, 1, 8), [('FormattedValue', (1, 2, 1, 7), ('Name', (1, 3, 1, 4), 'a', ('Load',)), 114, None)])),
+('Expression', ('JoinedStr', (1, 0, 1, 11), [('Constant', (1, 2, 1, 6), 'foo(', None), ('FormattedValue', (1, 6, 1, 9), ('Name', (1, 7, 1, 8), 'a', ('Load',)), -1, None), ('Constant', (1, 9, 1, 10), ')', None)])),
+]
+main()
diff --git a/Lib/test/test_ast/test_ast.py b/Lib/test/test_ast/test_ast.py
new file mode 100644
index 00000000000000..0bb74582f3ecdf
--- /dev/null
+++ b/Lib/test/test_ast/test_ast.py
@@ -0,0 +1,3493 @@
+import ast
+import builtins
+import copy
+import dis
+import enum
+import os
+import re
+import sys
+import textwrap
+import types
+import unittest
+import warnings
+import weakref
+from functools import partial
+from textwrap import dedent
+
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = None
+
+from test import support
+from test.support.import_helper import import_fresh_module
+from test.support import os_helper, script_helper
+from test.support.ast_helper import ASTTestMixin
+from test.test_ast.utils import to_tuple
+from test.test_ast.snippets import (
+    eval_tests, eval_results, exec_tests, exec_results, single_tests, single_results
+)
+
+
+class AST_Tests(unittest.TestCase):
+    maxDiff = None
+
+    def _is_ast_node(self, name, node):
+        if not isinstance(node, type):
+            return False
+        if "ast" not in node.__module__:
+            return False
+        return name != "AST" and name[0].isupper()
+
+    def _assertTrueorder(self, ast_node, parent_pos):
+        if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
+            return
+        if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
+            node_pos = (ast_node.lineno, ast_node.col_offset)
+            self.assertGreaterEqual(node_pos, parent_pos)
+            parent_pos = (ast_node.lineno, ast_node.col_offset)
+        for name in ast_node._fields:
+            value = getattr(ast_node, name)
+            if isinstance(value, list):
+                first_pos = parent_pos
+                if value and name == "decorator_list":
+                    first_pos = (value[0].lineno, value[0].col_offset)
+                for child in value:
+                    self._assertTrueorder(child, first_pos)
+            elif value is not None:
+                self._assertTrueorder(value, parent_pos)
+        self.assertEqual(ast_node._fields, ast_node.__match_args__)
+
+    def test_AST_objects(self):
+        x = ast.AST()
+        self.assertEqual(x._fields, ())
+        x.foobar = 42
+        self.assertEqual(x.foobar, 42)
+        self.assertEqual(x.__dict__["foobar"], 42)
+
+        with self.assertRaises(AttributeError):
+            x.vararg
+
+        with self.assertRaises(TypeError):
+            # "ast.AST constructor takes 0 positional arguments"
+            ast.AST(2)
+
+    def test_AST_fields_NULL_check(self):
+        # See: https://github.com/python/cpython/issues/126105
+        old_value = ast.AST._fields
+
+        def cleanup():
+            ast.AST._fields = old_value
+        self.addCleanup(cleanup)
+
+        del ast.AST._fields
+
+        msg = "type object 'ast.AST' has no attribute '_fields'"
+        # Both examples used to crash:
+        with self.assertRaisesRegex(AttributeError, msg):
+            ast.AST(arg1=123)
+        with self.assertRaisesRegex(AttributeError, msg):
+            ast.AST()
+
+    def test_AST_garbage_collection(self):
+        class X:
+            pass
+
+        a = ast.AST()
+        a.x = X()
+        a.x.a = a
+        ref = weakref.ref(a.x)
+        del a
+        support.gc_collect()
+        self.assertIsNone(ref())
+
+    def test_snippets(self):
+        for input, output, kind in (
+            (exec_tests, exec_results, "exec"),
+            (single_tests, single_results, "single"),
+            (eval_tests, eval_results, "eval"),
+        ):
+            for i, o in zip(input, output):
+                with self.subTest(action="parsing", input=i):
+                    ast_tree = compile(i, "?", kind, ast.PyCF_ONLY_AST)
+                    self.assertEqual(to_tuple(ast_tree), o)
+                    self._assertTrueorder(ast_tree, (0, 0))
+                with self.subTest(action="compiling", input=i, kind=kind):
+                    compile(ast_tree, "?", kind)
+
+    def test_ast_validation(self):
+        # compile() is the only function that calls PyAST_Validate
+        snippets_to_validate = exec_tests + single_tests + eval_tests
+        for snippet in snippets_to_validate:
+            tree = ast.parse(snippet)
+            compile(tree, "<string>", "exec")
+
+    def test_optimization_levels__debug__(self):
+        cases = [(-1, "__debug__"), (0, "__debug__"), (1, False), (2, False)]
+        for optval, expected in cases:
+            with self.subTest(optval=optval, expected=expected):
+                res1 = ast.parse("__debug__", optimize=optval)
+                res2 = ast.parse(ast.parse("__debug__"), optimize=optval)
+                for res in [res1, res2]:
+                    self.assertIsInstance(res.body[0], ast.Expr)
+                    if isinstance(expected, bool):
+                        self.assertIsInstance(res.body[0].value, ast.Constant)
+                        self.assertEqual(res.body[0].value.value, expected)
+                    else:
+                        self.assertIsInstance(res.body[0].value, ast.Name)
+                        self.assertEqual(res.body[0].value.id, expected)
+
+    def test_optimization_levels_const_folding(self):
+        folded = ("Expr", (1, 0, 1, 5), ("Constant", (1, 0, 1, 5), 3, None))
+        not_folded = (
+            "Expr",
+            (1, 0, 1, 5),
+            (
+                "BinOp",
+                (1, 0, 1, 5),
+                ("Constant", (1, 0, 1, 1), 1, None),
+                ("Add",),
+                ("Constant", (1, 4, 1, 5), 2, None),
+            ),
+        )
+
+        cases = [(-1, not_folded), (0, not_folded), (1, folded), (2, folded)]
+        for optval, expected in cases:
+            with self.subTest(optval=optval):
+                tree1 = ast.parse("1 + 2", optimize=optval)
+                tree2 = ast.parse(ast.parse("1 + 2"), optimize=optval)
+                for tree in [tree1, tree2]:
+                    res = to_tuple(tree.body[0])
+                    self.assertEqual(res, expected)
+
+    def test_invalid_position_information(self):
+        invalid_linenos = [(10, 1), (-10, -11), (10, -11), (-5, -2), (-5, 1)]
+
+        for lineno, end_lineno in invalid_linenos:
+            with self.subTest(f"Check invalid linenos {lineno}:{end_lineno}"):
+                snippet = "a = 1"
+                tree = ast.parse(snippet)
+                tree.body[0].lineno = lineno
+                tree.body[0].end_lineno = end_lineno
+                with self.assertRaises(ValueError):
+                    compile(tree, "<string>", "exec")
+
+        invalid_col_offsets = [(10, 1), (-10, -11), (10, -11), (-5, -2), (-5, 1)]
+        for col_offset, end_col_offset in invalid_col_offsets:
+            with self.subTest(
+                f"Check invalid col_offset {col_offset}:{end_col_offset}"
+            ):
+                snippet = "a = 1"
+                tree = ast.parse(snippet)
+                tree.body[0].col_offset = col_offset
+                tree.body[0].end_col_offset = end_col_offset
+                with self.assertRaises(ValueError):
+                    compile(tree, "<string>", "exec")
+
+    def test_compilation_of_ast_nodes_with_default_end_position_values(self):
+        tree = ast.Module(
+            body=[
+                ast.Import(
+                    names=[ast.alias(name="builtins", lineno=1, col_offset=0)],
+                    lineno=1,
+                    col_offset=0,
+                ),
+                ast.Import(
+                    names=[ast.alias(name="traceback", lineno=0, col_offset=0)],
+                    lineno=0,
+                    col_offset=1,
+                ),
+            ],
+            type_ignores=[],
+        )
+
+        # Check that compilation doesn't crash. Note: this may crash explicitly only on debug mode.
+        compile(tree, "<string>", "exec")
+
+    def test_slice(self):
+        slc = ast.parse("x[::]").body[0].value.slice
+        self.assertIsNone(slc.upper)
+        self.assertIsNone(slc.lower)
+        self.assertIsNone(slc.step)
+
+    def test_from_import(self):
+        im = ast.parse("from . import y").body[0]
+        self.assertIsNone(im.module)
+
+    def test_non_interned_future_from_ast(self):
+        mod = ast.parse("from __future__ import division")
+        self.assertIsInstance(mod.body[0], ast.ImportFrom)
+        mod.body[0].module = " __future__ ".strip()
+        compile(mod, "<test>", "exec")
+
+    def test_alias(self):
+        im = ast.parse("from bar import y").body[0]
+        self.assertEqual(len(im.names), 1)
+        alias = im.names[0]
+        self.assertEqual(alias.name, "y")
+        self.assertIsNone(alias.asname)
+        self.assertEqual(alias.lineno, 1)
+        self.assertEqual(alias.end_lineno, 1)
+        self.assertEqual(alias.col_offset, 16)
+        self.assertEqual(alias.end_col_offset, 17)
+
+        im = ast.parse("from bar import *").body[0]
+        alias = im.names[0]
+        self.assertEqual(alias.name, "*")
+        self.assertIsNone(alias.asname)
+        self.assertEqual(alias.lineno, 1)
+        self.assertEqual(alias.end_lineno, 1)
+        self.assertEqual(alias.col_offset, 16)
+        self.assertEqual(alias.end_col_offset, 17)
+
+        im = ast.parse("from bar import y as z").body[0]
+        alias = im.names[0]
+        self.assertEqual(alias.name, "y")
+        self.assertEqual(alias.asname, "z")
+        self.assertEqual(alias.lineno, 1)
+        self.assertEqual(alias.end_lineno, 1)
+        self.assertEqual(alias.col_offset, 16)
+        self.assertEqual(alias.end_col_offset, 22)
+
+        im = ast.parse("import bar as foo").body[0]
+        alias = im.names[0]
+        self.assertEqual(alias.name, "bar")
+        self.assertEqual(alias.asname, "foo")
+        self.assertEqual(alias.lineno, 1)
+        self.assertEqual(alias.end_lineno, 1)
+        self.assertEqual(alias.col_offset, 7)
+        self.assertEqual(alias.end_col_offset, 17)
+
+    def test_base_classes(self):
+        self.assertTrue(issubclass(ast.For, ast.stmt))
+        self.assertTrue(issubclass(ast.Name, ast.expr))
+        self.assertTrue(issubclass(ast.stmt, ast.AST))
+        self.assertTrue(issubclass(ast.expr, ast.AST))
+        self.assertTrue(issubclass(ast.comprehension, ast.AST))
+        self.assertTrue(issubclass(ast.Gt, ast.AST))
+
+    def test_import_deprecated(self):
+        ast = import_fresh_module("ast")
+        depr_regex = (
+            r"ast\.{} is deprecated and will be removed in Python 3.14; "
+            r"use ast\.Constant instead"
+        )
+        for name in "Num", "Str", "Bytes", "NameConstant", "Ellipsis":
+            with self.assertWarnsRegex(DeprecationWarning, depr_regex.format(name)):
+                getattr(ast, name)
+
+    def test_field_attr_existence_deprecated(self):
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num, Str, Bytes, NameConstant, Ellipsis
+
+        for name in ("Num", "Str", "Bytes", "NameConstant", "Ellipsis"):
+            item = getattr(ast, name)
+            if self._is_ast_node(name, item):
+                with self.subTest(item):
+                    with self.assertWarns(DeprecationWarning):
+                        x = item()
+                if isinstance(x, ast.AST):
+                    self.assertIs(type(x._fields), tuple)
+
+    def test_field_attr_existence(self):
+        for name, item in ast.__dict__.items():
+            # These emit DeprecationWarnings
+            if name in {"Num", "Str", "Bytes", "NameConstant", "Ellipsis"}:
+                continue
+            # constructor has a different signature
+            if name == "Index":
+                continue
+            if self._is_ast_node(name, item):
+                x = self._construct_ast_class(item)
+                if isinstance(x, ast.AST):
+                    self.assertIs(type(x._fields), tuple)
+
+    def _construct_ast_class(self, cls):
+        kwargs = {}
+        for name, typ in cls.__annotations__.items():
+            if typ is str:
+                kwargs[name] = "capybara"
+            elif typ is int:
+                kwargs[name] = 42
+            elif typ is object:
+                kwargs[name] = b"capybara"
+            elif isinstance(typ, type) and issubclass(typ, ast.AST):
+                kwargs[name] = self._construct_ast_class(typ)
+        return cls(**kwargs)
+
+    def test_arguments(self):
+        x = ast.arguments()
+        self.assertEqual(
+            x._fields,
+            (
+                "posonlyargs",
+                "args",
+                "vararg",
+                "kwonlyargs",
+                "kw_defaults",
+                "kwarg",
+                "defaults",
+            ),
+        )
+        self.assertEqual(
+            x.__annotations__,
+            {
+                "posonlyargs": list[ast.arg],
+                "args": list[ast.arg],
+                "vararg": ast.arg | None,
+                "kwonlyargs": list[ast.arg],
+                "kw_defaults": list[ast.expr],
+                "kwarg": ast.arg | None,
+                "defaults": list[ast.expr],
+            },
+        )
+
+        self.assertEqual(x.args, [])
+        self.assertIsNone(x.vararg)
+
+        x = ast.arguments(*range(1, 8))
+        self.assertEqual(x.args, 2)
+        self.assertEqual(x.vararg, 3)
+
+    def test_field_attr_writable_deprecated(self):
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            x = ast.Num()
+        # We can assign to _fields
+        x._fields = 666
+        self.assertEqual(x._fields, 666)
+
+    def test_field_attr_writable(self):
+        x = ast.Constant(1)
+        # We can assign to _fields
+        x._fields = 666
+        self.assertEqual(x._fields, 666)
+
+    def test_classattrs_deprecated(self):
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num, Str, Bytes, NameConstant, Ellipsis
+
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+            x = ast.Num()
+            self.assertEqual(x._fields, ("value", "kind"))
+
+            with self.assertRaises(AttributeError):
+                x.value
+
+            with self.assertRaises(AttributeError):
+                x.n
+
+            x = ast.Num(42)
+            self.assertEqual(x.value, 42)
+            self.assertEqual(x.n, 42)
+
+            with self.assertRaises(AttributeError):
+                x.lineno
+
+            with self.assertRaises(AttributeError):
+                x.foobar
+
+            x = ast.Num(lineno=2)
+            self.assertEqual(x.lineno, 2)
+
+            x = ast.Num(42, lineno=0)
+            self.assertEqual(x.lineno, 0)
+            self.assertEqual(x._fields, ("value", "kind"))
+            self.assertEqual(x.value, 42)
+            self.assertEqual(x.n, 42)
+
+            self.assertRaises(TypeError, ast.Num, 1, None, 2)
+            self.assertRaises(TypeError, ast.Num, 1, None, 2, lineno=0)
+
+            # Arbitrary keyword arguments are supported
+            self.assertEqual(ast.Num(1, foo="bar").foo, "bar")
+
+            with self.assertRaisesRegex(
+                TypeError, "Num got multiple values for argument 'n'"
+            ):
+                ast.Num(1, n=2)
+
+            self.assertEqual(ast.Num(42).n, 42)
+            self.assertEqual(ast.Num(4.25).n, 4.25)
+            self.assertEqual(ast.Num(4.25j).n, 4.25j)
+            self.assertEqual(ast.Str("42").s, "42")
+            self.assertEqual(ast.Bytes(b"42").s, b"42")
+            self.assertIs(ast.NameConstant(True).value, True)
+            self.assertIs(ast.NameConstant(False).value, False)
+            self.assertIs(ast.NameConstant(None).value, None)
+
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Constant.__init__ missing 1 required positional argument: 'value'. This will become "
+                "an error in Python 3.15.",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Constant.__init__ missing 1 required positional argument: 'value'. This will become "
+                "an error in Python 3.15.",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Constant.__init__ got an unexpected keyword argument 'foo'. Support for "
+                "arbitrary keyword arguments is deprecated and will be removed in Python "
+                "3.15.",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Str is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute s is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Bytes is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute s is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+            ],
+        )
+
+    def test_classattrs(self):
+        with self.assertWarns(DeprecationWarning):
+            x = ast.Constant()
+        self.assertEqual(x._fields, ("value", "kind"))
+
+        with self.assertRaises(AttributeError):
+            x.value
+
+        x = ast.Constant(42)
+        self.assertEqual(x.value, 42)
+
+        with self.assertRaises(AttributeError):
+            x.lineno
+
+        with self.assertRaises(AttributeError):
+            x.foobar
+
+        x = ast.Constant(lineno=2, value=3)
+        self.assertEqual(x.lineno, 2)
+
+        x = ast.Constant(42, lineno=0)
+        self.assertEqual(x.lineno, 0)
+        self.assertEqual(x._fields, ("value", "kind"))
+        self.assertEqual(x.value, 42)
+
+        self.assertRaises(TypeError, ast.Constant, 1, None, 2)
+        self.assertRaises(TypeError, ast.Constant, 1, None, 2, lineno=0)
+
+        # Arbitrary keyword arguments are supported (but deprecated)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(ast.Constant(1, foo="bar").foo, "bar")
+
+        with self.assertRaisesRegex(
+            TypeError, "Constant got multiple values for argument 'value'"
+        ):
+            ast.Constant(1, value=2)
+
+        self.assertEqual(ast.Constant(42).value, 42)
+        self.assertEqual(ast.Constant(4.25).value, 4.25)
+        self.assertEqual(ast.Constant(4.25j).value, 4.25j)
+        self.assertEqual(ast.Constant("42").value, "42")
+        self.assertEqual(ast.Constant(b"42").value, b"42")
+        self.assertIs(ast.Constant(True).value, True)
+        self.assertIs(ast.Constant(False).value, False)
+        self.assertIs(ast.Constant(None).value, None)
+        self.assertIs(ast.Constant(...).value, ...)
+
+    def test_realtype(self):
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num, Str, Bytes, NameConstant, Ellipsis
+
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+            self.assertIs(type(ast.Num(42)), ast.Constant)
+            self.assertIs(type(ast.Num(4.25)), ast.Constant)
+            self.assertIs(type(ast.Num(4.25j)), ast.Constant)
+            self.assertIs(type(ast.Str("42")), ast.Constant)
+            self.assertIs(type(ast.Bytes(b"42")), ast.Constant)
+            self.assertIs(type(ast.NameConstant(True)), ast.Constant)
+            self.assertIs(type(ast.NameConstant(False)), ast.Constant)
+            self.assertIs(type(ast.NameConstant(None)), ast.Constant)
+            self.assertIs(type(ast.Ellipsis()), ast.Constant)
+
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Str is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Bytes is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Ellipsis is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+            ],
+        )
+
+    def test_isinstance(self):
+        from ast import Constant
+
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num, Str, Bytes, NameConstant, Ellipsis
+
+        cls_depr_msg = (
+            "ast.{} is deprecated and will be removed in Python 3.14; "
+            "use ast.Constant instead"
+        )
+
+        assertNumDeprecated = partial(
+            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Num")
+        )
+        assertStrDeprecated = partial(
+            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Str")
+        )
+        assertBytesDeprecated = partial(
+            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Bytes")
+        )
+        assertNameConstantDeprecated = partial(
+            self.assertWarnsRegex,
+            DeprecationWarning,
+            cls_depr_msg.format("NameConstant"),
+        )
+        assertEllipsisDeprecated = partial(
+            self.assertWarnsRegex, DeprecationWarning, cls_depr_msg.format("Ellipsis")
+        )
+
+        for arg in 42, 4.2, 4.2j:
+            with self.subTest(arg=arg):
+                with assertNumDeprecated():
+                    n = Num(arg)
+                with assertNumDeprecated():
+                    self.assertIsInstance(n, Num)
+
+        with assertStrDeprecated():
+            s = Str("42")
+        with assertStrDeprecated():
+            self.assertIsInstance(s, Str)
+
+        with assertBytesDeprecated():
+            b = Bytes(b"42")
+        with assertBytesDeprecated():
+            self.assertIsInstance(b, Bytes)
+
+        for arg in True, False, None:
+            with self.subTest(arg=arg):
+                with assertNameConstantDeprecated():
+                    n = NameConstant(arg)
+                with assertNameConstantDeprecated():
+                    self.assertIsInstance(n, NameConstant)
+
+        with assertEllipsisDeprecated():
+            e = Ellipsis()
+        with assertEllipsisDeprecated():
+            self.assertIsInstance(e, Ellipsis)
+
+        for arg in 42, 4.2, 4.2j:
+            with self.subTest(arg=arg):
+                with assertNumDeprecated():
+                    self.assertIsInstance(Constant(arg), Num)
+
+        with assertStrDeprecated():
+            self.assertIsInstance(Constant("42"), Str)
+
+        with assertBytesDeprecated():
+            self.assertIsInstance(Constant(b"42"), Bytes)
+
+        for arg in True, False, None:
+            with self.subTest(arg=arg):
+                with assertNameConstantDeprecated():
+                    self.assertIsInstance(Constant(arg), NameConstant)
+
+        with assertEllipsisDeprecated():
+            self.assertIsInstance(Constant(...), Ellipsis)
+
+        with assertStrDeprecated():
+            s = Str("42")
+        assertNumDeprecated(self.assertNotIsInstance, s, Num)
+        assertBytesDeprecated(self.assertNotIsInstance, s, Bytes)
+
+        with assertNumDeprecated():
+            n = Num(42)
+        assertStrDeprecated(self.assertNotIsInstance, n, Str)
+        assertNameConstantDeprecated(self.assertNotIsInstance, n, NameConstant)
+        assertEllipsisDeprecated(self.assertNotIsInstance, n, Ellipsis)
+
+        with assertNameConstantDeprecated():
+            n = NameConstant(True)
+        with assertNumDeprecated():
+            self.assertNotIsInstance(n, Num)
+
+        with assertNameConstantDeprecated():
+            n = NameConstant(False)
+        with assertNumDeprecated():
+            self.assertNotIsInstance(n, Num)
+
+        for arg in "42", True, False:
+            with self.subTest(arg=arg):
+                with assertNumDeprecated():
+                    self.assertNotIsInstance(Constant(arg), Num)
+
+        assertStrDeprecated(self.assertNotIsInstance, Constant(42), Str)
+        assertBytesDeprecated(self.assertNotIsInstance, Constant("42"), Bytes)
+        assertNameConstantDeprecated(
+            self.assertNotIsInstance, Constant(42), NameConstant
+        )
+        assertEllipsisDeprecated(self.assertNotIsInstance, Constant(42), Ellipsis)
+        assertNumDeprecated(self.assertNotIsInstance, Constant(None), Num)
+        assertStrDeprecated(self.assertNotIsInstance, Constant(None), Str)
+        assertBytesDeprecated(self.assertNotIsInstance, Constant(None), Bytes)
+        assertNameConstantDeprecated(
+            self.assertNotIsInstance, Constant(1), NameConstant
+        )
+        assertEllipsisDeprecated(self.assertNotIsInstance, Constant(None), Ellipsis)
+
+        class S(str):
+            pass
+
+        with assertStrDeprecated():
+            self.assertIsInstance(Constant(S("42")), Str)
+        with assertNumDeprecated():
+            self.assertNotIsInstance(Constant(S("42")), Num)
+
+    def test_constant_subclasses_deprecated(self):
+        with warnings.catch_warnings():
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num
+
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+
+            class N(ast.Num):
+                def __init__(self, *args, **kwargs):
+                    super().__init__(*args, **kwargs)
+                    self.z = "spam"
+
+            class N2(ast.Num):
+                pass
+
+            n = N(42)
+            self.assertEqual(n.n, 42)
+            self.assertEqual(n.z, "spam")
+            self.assertIs(type(n), N)
+            self.assertIsInstance(n, N)
+            self.assertIsInstance(n, ast.Num)
+            self.assertNotIsInstance(n, N2)
+            self.assertNotIsInstance(ast.Num(42), N)
+            n = N(n=42)
+            self.assertEqual(n.n, 42)
+            self.assertIs(type(n), N)
+
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+            ],
+        )
+
+    def test_constant_subclasses(self):
+        class N(ast.Constant):
+            def __init__(self, *args, **kwargs):
+                super().__init__(*args, **kwargs)
+                self.z = "spam"
+
+        class N2(ast.Constant):
+            pass
+
+        n = N(42)
+        self.assertEqual(n.value, 42)
+        self.assertEqual(n.z, "spam")
+        self.assertEqual(type(n), N)
+        self.assertTrue(isinstance(n, N))
+        self.assertTrue(isinstance(n, ast.Constant))
+        self.assertFalse(isinstance(n, N2))
+        self.assertFalse(isinstance(ast.Constant(42), N))
+        n = N(value=42)
+        self.assertEqual(n.value, 42)
+        self.assertEqual(type(n), N)
+
+    def test_module(self):
+        body = [ast.Constant(42)]
+        x = ast.Module(body, [])
+        self.assertEqual(x.body, body)
+
+    def test_nodeclasses(self):
+        # Zero arguments constructor explicitly allowed (but deprecated)
+        with self.assertWarns(DeprecationWarning):
+            x = ast.BinOp()
+        self.assertEqual(x._fields, ("left", "op", "right"))
+
+        # Random attribute allowed too
+        x.foobarbaz = 5
+        self.assertEqual(x.foobarbaz, 5)
+
+        n1 = ast.Constant(1)
+        n3 = ast.Constant(3)
+        addop = ast.Add()
+        x = ast.BinOp(n1, addop, n3)
+        self.assertEqual(x.left, n1)
+        self.assertEqual(x.op, addop)
+        self.assertEqual(x.right, n3)
+
+        x = ast.BinOp(1, 2, 3)
+        self.assertEqual(x.left, 1)
+        self.assertEqual(x.op, 2)
+        self.assertEqual(x.right, 3)
+
+        x = ast.BinOp(1, 2, 3, lineno=0)
+        self.assertEqual(x.left, 1)
+        self.assertEqual(x.op, 2)
+        self.assertEqual(x.right, 3)
+        self.assertEqual(x.lineno, 0)
+
+        # node raises exception when given too many arguments
+        self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4)
+        # node raises exception when given too many arguments
+        self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4, lineno=0)
+
+        # can set attributes through kwargs too
+        x = ast.BinOp(left=1, op=2, right=3, lineno=0)
+        self.assertEqual(x.left, 1)
+        self.assertEqual(x.op, 2)
+        self.assertEqual(x.right, 3)
+        self.assertEqual(x.lineno, 0)
+
+        # Random kwargs also allowed (but deprecated)
+        with self.assertWarns(DeprecationWarning):
+            x = ast.BinOp(1, 2, 3, foobarbaz=42)
+        self.assertEqual(x.foobarbaz, 42)
+
+    def test_no_fields(self):
+        # this used to fail because Sub._fields was None
+        x = ast.Sub()
+        self.assertEqual(x._fields, ())
+
+    def test_invalid_sum(self):
+        pos = dict(lineno=2, col_offset=3)
+        m = ast.Module([ast.Expr(ast.expr(**pos), **pos)], [])
+        with self.assertRaises(TypeError) as cm:
+            compile(m, "<test>", "exec")
+        self.assertIn("but got <ast.expr", str(cm.exception))
+
+    def test_invalid_identifier(self):
+        m = ast.Module([ast.Expr(ast.Name(42, ast.Load()))], [])
+        ast.fix_missing_locations(m)
+        with self.assertRaises(TypeError) as cm:
+            compile(m, "<test>", "exec")
+        self.assertIn("identifier must be of type str", str(cm.exception))
+
+    def test_invalid_constant(self):
+        for invalid_constant in int, (1, 2, int), frozenset((1, 2, int)):
+            e = ast.Expression(body=ast.Constant(invalid_constant))
+            ast.fix_missing_locations(e)
+            with self.assertRaisesRegex(TypeError, "invalid type in Constant: type"):
+                compile(e, "<test>", "eval")
+
+    def test_empty_yield_from(self):
+        # Issue 16546: yield from value is not optional.
+        empty_yield_from = ast.parse("def f():\n yield from g()")
+        empty_yield_from.body[0].body[0].value.value = None
+        with self.assertRaises(ValueError) as cm:
+            compile(empty_yield_from, "<test>", "exec")
+        self.assertIn("field 'value' is required", str(cm.exception))
+
+    @support.cpython_only
+    def test_issue31592(self):
+        # There shouldn't be an assertion failure in case of a bad
+        # unicodedata.normalize().
+        import unicodedata
+
+        def bad_normalize(*args):
+            return None
+
+        with support.swap_attr(unicodedata, "normalize", bad_normalize):
+            self.assertRaises(TypeError, ast.parse, "\u03d5")
+
+    def test_issue18374_binop_col_offset(self):
+        tree = ast.parse("4+5+6+7")
+        parent_binop = tree.body[0].value
+        child_binop = parent_binop.left
+        grandchild_binop = child_binop.left
+        self.assertEqual(parent_binop.col_offset, 0)
+        self.assertEqual(parent_binop.end_col_offset, 7)
+        self.assertEqual(child_binop.col_offset, 0)
+        self.assertEqual(child_binop.end_col_offset, 5)
+        self.assertEqual(grandchild_binop.col_offset, 0)
+        self.assertEqual(grandchild_binop.end_col_offset, 3)
+
+        tree = ast.parse("4+5-\\\n 6-7")
+        parent_binop = tree.body[0].value
+        child_binop = parent_binop.left
+        grandchild_binop = child_binop.left
+        self.assertEqual(parent_binop.col_offset, 0)
+        self.assertEqual(parent_binop.lineno, 1)
+        self.assertEqual(parent_binop.end_col_offset, 4)
+        self.assertEqual(parent_binop.end_lineno, 2)
+
+        self.assertEqual(child_binop.col_offset, 0)
+        self.assertEqual(child_binop.lineno, 1)
+        self.assertEqual(child_binop.end_col_offset, 2)
+        self.assertEqual(child_binop.end_lineno, 2)
+
+        self.assertEqual(grandchild_binop.col_offset, 0)
+        self.assertEqual(grandchild_binop.lineno, 1)
+        self.assertEqual(grandchild_binop.end_col_offset, 3)
+        self.assertEqual(grandchild_binop.end_lineno, 1)
+
+    def test_issue39579_dotted_name_end_col_offset(self):
+        tree = ast.parse("@a.b.c\ndef f(): pass")
+        attr_b = tree.body[0].decorator_list[0].value
+        self.assertEqual(attr_b.end_col_offset, 4)
+
+    def test_ast_asdl_signature(self):
+        self.assertEqual(
+            ast.withitem.__doc__, "withitem(expr context_expr, expr? optional_vars)"
+        )
+        self.assertEqual(ast.GtE.__doc__, "GtE")
+        self.assertEqual(ast.Name.__doc__, "Name(identifier id, expr_context ctx)")
+        self.assertEqual(
+            ast.cmpop.__doc__,
+            "cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn",
+        )
+        expressions = [f"     | {node.__doc__}" for node in ast.expr.__subclasses__()]
+        expressions[0] = f"expr = {ast.expr.__subclasses__()[0].__doc__}"
+        self.assertCountEqual(ast.expr.__doc__.split("\n"), expressions)
+
+    def test_positional_only_feature_version(self):
+        ast.parse("def foo(x, /): ...", feature_version=(3, 8))
+        ast.parse("def bar(x=1, /): ...", feature_version=(3, 8))
+        with self.assertRaises(SyntaxError):
+            ast.parse("def foo(x, /): ...", feature_version=(3, 7))
+        with self.assertRaises(SyntaxError):
+            ast.parse("def bar(x=1, /): ...", feature_version=(3, 7))
+
+        ast.parse("lambda x, /: ...", feature_version=(3, 8))
+        ast.parse("lambda x=1, /: ...", feature_version=(3, 8))
+        with self.assertRaises(SyntaxError):
+            ast.parse("lambda x, /: ...", feature_version=(3, 7))
+        with self.assertRaises(SyntaxError):
+            ast.parse("lambda x=1, /: ...", feature_version=(3, 7))
+
+    def test_assignment_expression_feature_version(self):
+        ast.parse("(x := 0)", feature_version=(3, 8))
+        with self.assertRaises(SyntaxError):
+            ast.parse("(x := 0)", feature_version=(3, 7))
+
+    def test_conditional_context_managers_parse_with_low_feature_version(self):
+        # regression test for gh-115881
+        ast.parse("with (x() if y else z()): ...", feature_version=(3, 8))
+
+    def test_exception_groups_feature_version(self):
+        code = dedent("""
+        try: ...
+        except* Exception: ...
+        """)
+        ast.parse(code)
+        with self.assertRaises(SyntaxError):
+            ast.parse(code, feature_version=(3, 10))
+
+    def test_type_params_feature_version(self):
+        samples = [
+            "type X = int",
+            "class X[T]: pass",
+            "def f[T](): pass",
+        ]
+        for sample in samples:
+            with self.subTest(sample):
+                ast.parse(sample)
+                with self.assertRaises(SyntaxError):
+                    ast.parse(sample, feature_version=(3, 11))
+
+    def test_type_params_default_feature_version(self):
+        samples = [
+            "type X[*Ts=int] = int",
+            "class X[T=int]: pass",
+            "def f[**P=int](): pass",
+        ]
+        for sample in samples:
+            with self.subTest(sample):
+                ast.parse(sample)
+                with self.assertRaises(SyntaxError):
+                    ast.parse(sample, feature_version=(3, 12))
+
+    def test_invalid_major_feature_version(self):
+        with self.assertRaises(ValueError):
+            ast.parse("pass", feature_version=(2, 7))
+        with self.assertRaises(ValueError):
+            ast.parse("pass", feature_version=(4, 0))
+
+    def test_constant_as_name(self):
+        for constant in "True", "False", "None":
+            expr = ast.Expression(ast.Name(constant, ast.Load()))
+            ast.fix_missing_locations(expr)
+            with self.assertRaisesRegex(
+                ValueError, f"identifier field can't represent '{constant}' constant"
+            ):
+                compile(expr, "<test>", "eval")
+
+    def test_precedence_enum(self):
+        class _Precedence(enum.IntEnum):
+            """Precedence table that originated from python grammar."""
+
+            NAMED_EXPR = enum.auto()  # <target> := <expr1>
+            TUPLE = enum.auto()  # <expr1>, <expr2>
+            YIELD = enum.auto()  # 'yield', 'yield from'
+            TEST = enum.auto()  # 'if'-'else', 'lambda'
+            OR = enum.auto()  # 'or'
+            AND = enum.auto()  # 'and'
+            NOT = enum.auto()  # 'not'
+            CMP = enum.auto()  # '<', '>', '==', '>=', '<=', '!=',
+            # 'in', 'not in', 'is', 'is not'
+            EXPR = enum.auto()
+            BOR = EXPR  # '|'
+            BXOR = enum.auto()  # '^'
+            BAND = enum.auto()  # '&'
+            SHIFT = enum.auto()  # '<<', '>>'
+            ARITH = enum.auto()  # '+', '-'
+            TERM = enum.auto()  # '*', '@', '/', '%', '//'
+            FACTOR = enum.auto()  # unary '+', '-', '~'
+            POWER = enum.auto()  # '**'
+            AWAIT = enum.auto()  # 'await'
+            ATOM = enum.auto()
+
+            def next(self):
+                try:
+                    return self.__class__(self + 1)
+                except ValueError:
+                    return self
+
+        enum._test_simple_enum(_Precedence, ast._Precedence)
+
+    @support.cpython_only
+    def test_ast_recursion_limit(self):
+        fail_depth = support.exceeds_recursion_limit()
+        crash_depth = 100_000
+        success_depth = int(support.get_c_recursion_limit() * 0.8)
+        if _testinternalcapi is not None:
+            remaining = _testinternalcapi.get_c_recursion_remaining()
+            success_depth = min(success_depth, remaining)
+
+        def check_limit(prefix, repeated):
+            expect_ok = prefix + repeated * success_depth
+            ast.parse(expect_ok)
+            for depth in (fail_depth, crash_depth):
+                broken = prefix + repeated * depth
+                details = "Compiling ({!r} + {!r} * {})".format(prefix, repeated, depth)
+                with self.assertRaises(RecursionError, msg=details):
+                    with support.infinite_recursion():
+                        ast.parse(broken)
+
+        check_limit("a", "()")
+        check_limit("a", ".b")
+        check_limit("a", "[0]")
+        check_limit("a", "*a")
+
+    def test_null_bytes(self):
+        with self.assertRaises(
+            SyntaxError, msg="source code string cannot contain null bytes"
+        ):
+            ast.parse("a\0b")
+
+    def assert_none_check(self, node: type[ast.AST], attr: str, source: str) -> None:
+        with self.subTest(f"{node.__name__}.{attr}"):
+            tree = ast.parse(source)
+            found = 0
+            for child in ast.walk(tree):
+                if isinstance(child, node):
+                    setattr(child, attr, None)
+                    found += 1
+            self.assertEqual(found, 1)
+            e = re.escape(f"field '{attr}' is required for {node.__name__}")
+            with self.assertRaisesRegex(ValueError, f"^{e}$"):
+                compile(tree, "<test>", "exec")
+
+    def test_none_checks(self) -> None:
+        tests = [
+            (ast.alias, "name", "import spam as SPAM"),
+            (ast.arg, "arg", "def spam(SPAM): spam"),
+            (ast.comprehension, "target", "[spam for SPAM in spam]"),
+            (ast.comprehension, "iter", "[spam for spam in SPAM]"),
+            (ast.keyword, "value", "spam(**SPAM)"),
+            (ast.match_case, "pattern", "match spam:\n case SPAM: spam"),
+            (ast.withitem, "context_expr", "with SPAM: spam"),
+        ]
+        for node, attr, source in tests:
+            self.assert_none_check(node, attr, source)
+
+
+class CopyTests(unittest.TestCase):
+    """Test copying and pickling AST nodes."""
+
+    def test_pickling(self):
+        import pickle
+
+        for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
+            for code in exec_tests:
+                with self.subTest(code=code, protocol=protocol):
+                    tree = compile(code, "?", "exec", 0x400)
+                    ast2 = pickle.loads(pickle.dumps(tree, protocol))
+                    self.assertEqual(to_tuple(ast2), to_tuple(tree))
+
+    def test_copy_with_parents(self):
+        # gh-120108
+        code = """
+        ('',)
+        while i < n:
+            if ch == '':
+                ch = format[i]
+                if ch == '':
+                    if freplace is None:
+                        '' % getattr(object)
+                elif ch == '':
+                    if zreplace is None:
+                        if hasattr:
+                            offset = object.utcoffset()
+                            if offset is not None:
+                                if offset.days < 0:
+                                    offset = -offset
+                                h = divmod(timedelta(hours=0))
+                                if u:
+                                    zreplace = '' % (sign,)
+                                elif s:
+                                    zreplace = '' % (sign,)
+                                else:
+                                    zreplace = '' % (sign,)
+                elif ch == '':
+                    if Zreplace is None:
+                        Zreplace = ''
+                        if hasattr(object):
+                            s = object.tzname()
+                            if s is not None:
+                                Zreplace = s.replace('')
+                    newformat.append(Zreplace)
+                else:
+                    push('')
+            else:
+                push(ch)
+
+        """
+        tree = ast.parse(textwrap.dedent(code))
+        for node in ast.walk(tree):
+            for child in ast.iter_child_nodes(node):
+                child.parent = node
+        try:
+            with support.infinite_recursion(200):
+                tree2 = copy.deepcopy(tree)
+        finally:
+            # Singletons like ast.Load() are shared; make sure we don't
+            # leave them mutated after this test.
+            for node in ast.walk(tree):
+                if hasattr(node, "parent"):
+                    del node.parent
+
+        for node in ast.walk(tree2):
+            for child in ast.iter_child_nodes(node):
+                if hasattr(child, "parent") and not isinstance(
+                    child,
+                    (
+                        ast.expr_context,
+                        ast.boolop,
+                        ast.unaryop,
+                        ast.cmpop,
+                        ast.operator,
+                    ),
+                ):
+                    self.assertEqual(to_tuple(child.parent), to_tuple(node))
+
+
+class ASTHelpers_Test(unittest.TestCase):
+    maxDiff = None
+
+    def test_parse(self):
+        a = ast.parse("foo(1 + 1)")
+        b = compile("foo(1 + 1)", "<unknown>", "exec", ast.PyCF_ONLY_AST)
+        self.assertEqual(ast.dump(a), ast.dump(b))
+
+    def test_parse_in_error(self):
+        try:
+            1 / 0
+        except Exception:
+            with self.assertRaises(SyntaxError) as e:
+                ast.literal_eval(r"'\U'")
+            self.assertIsNotNone(e.exception.__context__)
+
+    def test_dump(self):
+        node = ast.parse('spam(eggs, "and cheese")')
+        self.assertEqual(
+            ast.dump(node),
+            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
+            "args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')]))])",
+        )
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "Module([Expr(Call(Name('spam', Load()), [Name('eggs', Load()), "
+            "Constant('and cheese')]))])",
+        )
+        self.assertEqual(
+            ast.dump(node, include_attributes=True),
+            "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
+            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=4), "
+            "args=[Name(id='eggs', ctx=Load(), lineno=1, col_offset=5, "
+            "end_lineno=1, end_col_offset=9), Constant(value='and cheese', "
+            "lineno=1, col_offset=11, end_lineno=1, end_col_offset=23)], "
+            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24), "
+            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=24)])",
+        )
+
+    def test_dump_indent(self):
+        node = ast.parse('spam(eggs, "and cheese")')
+        self.assertEqual(
+            ast.dump(node, indent=3),
+            """\
+Module(
+   body=[
+      Expr(
+         value=Call(
+            func=Name(id='spam', ctx=Load()),
+            args=[
+               Name(id='eggs', ctx=Load()),
+               Constant(value='and cheese')]))])""",
+        )
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False, indent="\t"),
+            """\
+Module(
+\t[
+\t\tExpr(
+\t\t\tCall(
+\t\t\t\tName('spam', Load()),
+\t\t\t\t[
+\t\t\t\t\tName('eggs', Load()),
+\t\t\t\t\tConstant('and cheese')]))])""",
+        )
+        self.assertEqual(
+            ast.dump(node, include_attributes=True, indent=3),
+            """\
+Module(
+   body=[
+      Expr(
+         value=Call(
+            func=Name(
+               id='spam',
+               ctx=Load(),
+               lineno=1,
+               col_offset=0,
+               end_lineno=1,
+               end_col_offset=4),
+            args=[
+               Name(
+                  id='eggs',
+                  ctx=Load(),
+                  lineno=1,
+                  col_offset=5,
+                  end_lineno=1,
+                  end_col_offset=9),
+               Constant(
+                  value='and cheese',
+                  lineno=1,
+                  col_offset=11,
+                  end_lineno=1,
+                  end_col_offset=23)],
+            lineno=1,
+            col_offset=0,
+            end_lineno=1,
+            end_col_offset=24),
+         lineno=1,
+         col_offset=0,
+         end_lineno=1,
+         end_col_offset=24)])""",
+        )
+
+    def test_dump_incomplete(self):
+        node = ast.Raise(lineno=3, col_offset=4)
+        self.assertEqual(ast.dump(node), "Raise()")
+        self.assertEqual(
+            ast.dump(node, include_attributes=True), "Raise(lineno=3, col_offset=4)"
+        )
+        node = ast.Raise(exc=ast.Name(id="e", ctx=ast.Load()), lineno=3, col_offset=4)
+        self.assertEqual(ast.dump(node), "Raise(exc=Name(id='e', ctx=Load()))")
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False), "Raise(Name('e', Load()))"
+        )
+        self.assertEqual(
+            ast.dump(node, include_attributes=True),
+            "Raise(exc=Name(id='e', ctx=Load()), lineno=3, col_offset=4)",
+        )
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False, include_attributes=True),
+            "Raise(Name('e', Load()), lineno=3, col_offset=4)",
+        )
+        node = ast.Raise(cause=ast.Name(id="e", ctx=ast.Load()))
+        self.assertEqual(ast.dump(node), "Raise(cause=Name(id='e', ctx=Load()))")
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False), "Raise(cause=Name('e', Load()))"
+        )
+        # Arguments:
+        node = ast.arguments(args=[ast.arg("x")])
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "arguments([], [arg('x')])",
+        )
+        node = ast.arguments(posonlyargs=[ast.arg("x")])
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "arguments([arg('x')])",
+        )
+        node = ast.arguments(posonlyargs=[ast.arg("x")], kwonlyargs=[ast.arg("y")])
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "arguments([arg('x')], kwonlyargs=[arg('y')])",
+        )
+        node = ast.arguments(args=[ast.arg("x")], kwonlyargs=[ast.arg("y")])
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "arguments([], [arg('x')], kwonlyargs=[arg('y')])",
+        )
+        node = ast.arguments()
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "arguments()",
+        )
+        # Classes:
+        node = ast.ClassDef(
+            "T",
+            [],
+            [ast.keyword("a", ast.Constant(None))],
+            [],
+            [ast.Name("dataclass", ctx=ast.Load())],
+        )
+        self.assertEqual(
+            ast.dump(node),
+            "ClassDef(name='T', keywords=[keyword(arg='a', value=Constant(value=None))], decorator_list=[Name(id='dataclass', ctx=Load())])",
+        )
+        self.assertEqual(
+            ast.dump(node, annotate_fields=False),
+            "ClassDef('T', [], [keyword('a', Constant(None))], [], [Name('dataclass', Load())])",
+        )
+
+    def test_dump_show_empty(self):
+        def check_node(node, empty, full, **kwargs):
+            with self.subTest(show_empty=False):
+                self.assertEqual(
+                    ast.dump(node, show_empty=False, **kwargs),
+                    empty,
+                )
+            with self.subTest(show_empty=True):
+                self.assertEqual(
+                    ast.dump(node, show_empty=True, **kwargs),
+                    full,
+                )
+
+        def check_text(code, empty, full, **kwargs):
+            check_node(ast.parse(code), empty, full, **kwargs)
+
+        check_node(
+            ast.arguments(),
+            empty="arguments()",
+            full="arguments(posonlyargs=[], args=[], kwonlyargs=[], kw_defaults=[], defaults=[])",
+        )
+
+        check_node(
+            # Corner case: there are no real `Name` instances with `id=''`:
+            ast.Name(id="", ctx=ast.Load()),
+            empty="Name(id='', ctx=Load())",
+            full="Name(id='', ctx=Load())",
+        )
+
+        check_node(
+            ast.MatchSingleton(value=None),
+            empty="MatchSingleton(value=None)",
+            full="MatchSingleton(value=None)",
+        )
+
+        check_node(
+            ast.Constant(value=None),
+            empty="Constant(value=None)",
+            full="Constant(value=None)",
+        )
+
+        check_node(
+            ast.Constant(value=""),
+            empty="Constant(value='')",
+            full="Constant(value='')",
+        )
+
+        check_text(
+            "def a(b: int = 0, *, c): ...",
+            empty="Module(body=[FunctionDef(name='a', args=arguments(args=[arg(arg='b', annotation=Name(id='int', ctx=Load()))], kwonlyargs=[arg(arg='c')], kw_defaults=[None], defaults=[Constant(value=0)]), body=[Expr(value=Constant(value=Ellipsis))])])",
+            full="Module(body=[FunctionDef(name='a', args=arguments(posonlyargs=[], args=[arg(arg='b', annotation=Name(id='int', ctx=Load()))], kwonlyargs=[arg(arg='c')], kw_defaults=[None], defaults=[Constant(value=0)]), body=[Expr(value=Constant(value=Ellipsis))], decorator_list=[], type_params=[])], type_ignores=[])",
+        )
+
+        check_text(
+            "def a(b: int = 0, *, c): ...",
+            empty="Module(body=[FunctionDef(name='a', args=arguments(args=[arg(arg='b', annotation=Name(id='int', ctx=Load(), lineno=1, col_offset=9, end_lineno=1, end_col_offset=12), lineno=1, col_offset=6, end_lineno=1, end_col_offset=12)], kwonlyargs=[arg(arg='c', lineno=1, col_offset=21, end_lineno=1, end_col_offset=22)], kw_defaults=[None], defaults=[Constant(value=0, lineno=1, col_offset=15, end_lineno=1, end_col_offset=16)]), body=[Expr(value=Constant(value=Ellipsis, lineno=1, col_offset=25, end_lineno=1, end_col_offset=28), lineno=1, col_offset=25, end_lineno=1, end_col_offset=28)], lineno=1, col_offset=0, end_lineno=1, end_col_offset=28)])",
+            full="Module(body=[FunctionDef(name='a', args=arguments(posonlyargs=[], args=[arg(arg='b', annotation=Name(id='int', ctx=Load(), lineno=1, col_offset=9, end_lineno=1, end_col_offset=12), lineno=1, col_offset=6, end_lineno=1, end_col_offset=12)], kwonlyargs=[arg(arg='c', lineno=1, col_offset=21, end_lineno=1, end_col_offset=22)], kw_defaults=[None], defaults=[Constant(value=0, lineno=1, col_offset=15, end_lineno=1, end_col_offset=16)]), body=[Expr(value=Constant(value=Ellipsis, lineno=1, col_offset=25, end_lineno=1, end_col_offset=28), lineno=1, col_offset=25, end_lineno=1, end_col_offset=28)], decorator_list=[], type_params=[], lineno=1, col_offset=0, end_lineno=1, end_col_offset=28)], type_ignores=[])",
+            include_attributes=True,
+        )
+
+        check_text(
+            'spam(eggs, "and cheese")',
+            empty="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')]))])",
+            full="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load()), Constant(value='and cheese')], keywords=[]))], type_ignores=[])",
+        )
+
+        check_text(
+            'spam(eggs, text="and cheese")',
+            empty="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load())], keywords=[keyword(arg='text', value=Constant(value='and cheese'))]))])",
+            full="Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), args=[Name(id='eggs', ctx=Load())], keywords=[keyword(arg='text', value=Constant(value='and cheese'))]))], type_ignores=[])",
+        )
+
+        check_text(
+            "import _ast as ast; from module import sub",
+            empty="Module(body=[Import(names=[alias(name='_ast', asname='ast')]), ImportFrom(module='module', names=[alias(name='sub')], level=0)])",
+            full="Module(body=[Import(names=[alias(name='_ast', asname='ast')]), ImportFrom(module='module', names=[alias(name='sub')], level=0)], type_ignores=[])",
+        )
+
+    def test_copy_location(self):
+        src = ast.parse("1 + 1", mode="eval")
+        src.body.right = ast.copy_location(ast.Constant(2), src.body.right)
+        self.assertEqual(
+            ast.dump(src, include_attributes=True),
+            "Expression(body=BinOp(left=Constant(value=1, lineno=1, col_offset=0, "
+            "end_lineno=1, end_col_offset=1), op=Add(), right=Constant(value=2, "
+            "lineno=1, col_offset=4, end_lineno=1, end_col_offset=5), lineno=1, "
+            "col_offset=0, end_lineno=1, end_col_offset=5))",
+        )
+        func = ast.Name("spam", ast.Load())
+        src = ast.Call(
+            col_offset=1, lineno=1, end_lineno=1, end_col_offset=1, func=func
+        )
+        new = ast.copy_location(src, ast.Call(col_offset=None, lineno=None, func=func))
+        self.assertIsNone(new.end_lineno)
+        self.assertIsNone(new.end_col_offset)
+        self.assertEqual(new.lineno, 1)
+        self.assertEqual(new.col_offset, 1)
+
+    def test_fix_missing_locations(self):
+        src = ast.parse('write("spam")')
+        src.body.append(
+            ast.Expr(ast.Call(ast.Name("spam", ast.Load()), [ast.Constant("eggs")], []))
+        )
+        self.assertEqual(src, ast.fix_missing_locations(src))
+        self.maxDiff = None
+        self.assertEqual(
+            ast.dump(src, include_attributes=True),
+            "Module(body=[Expr(value=Call(func=Name(id='write', ctx=Load(), "
+            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=5), "
+            "args=[Constant(value='spam', lineno=1, col_offset=6, end_lineno=1, "
+            "end_col_offset=12)], lineno=1, col_offset=0, end_lineno=1, "
+            "end_col_offset=13), lineno=1, col_offset=0, end_lineno=1, "
+            "end_col_offset=13), Expr(value=Call(func=Name(id='spam', ctx=Load(), "
+            "lineno=1, col_offset=0, end_lineno=1, end_col_offset=0), "
+            "args=[Constant(value='eggs', lineno=1, col_offset=0, end_lineno=1, "
+            "end_col_offset=0)], lineno=1, col_offset=0, end_lineno=1, "
+            "end_col_offset=0), lineno=1, col_offset=0, end_lineno=1, end_col_offset=0)])",
+        )
+
+    def test_increment_lineno(self):
+        src = ast.parse("1 + 1", mode="eval")
+        self.assertEqual(ast.increment_lineno(src, n=3), src)
+        self.assertEqual(
+            ast.dump(src, include_attributes=True),
+            "Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, "
+            "end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, "
+            "lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, "
+            "col_offset=0, end_lineno=4, end_col_offset=5))",
+        )
+        # issue10869: do not increment lineno of root twice
+        src = ast.parse("1 + 1", mode="eval")
+        self.assertEqual(ast.increment_lineno(src.body, n=3), src.body)
+        self.assertEqual(
+            ast.dump(src, include_attributes=True),
+            "Expression(body=BinOp(left=Constant(value=1, lineno=4, col_offset=0, "
+            "end_lineno=4, end_col_offset=1), op=Add(), right=Constant(value=1, "
+            "lineno=4, col_offset=4, end_lineno=4, end_col_offset=5), lineno=4, "
+            "col_offset=0, end_lineno=4, end_col_offset=5))",
+        )
+        src = ast.Call(
+            func=ast.Name("test", ast.Load()), args=[], keywords=[], lineno=1
+        )
+        self.assertEqual(ast.increment_lineno(src).lineno, 2)
+        self.assertIsNone(ast.increment_lineno(src).end_lineno)
+
+    def test_increment_lineno_on_module(self):
+        src = ast.parse(
+            dedent("""\
+        a = 1
+        b = 2 # type: ignore
+        c = 3
+        d = 4 # type: ignore@tag
+        """),
+            type_comments=True,
+        )
+        ast.increment_lineno(src, n=5)
+        self.assertEqual(src.type_ignores[0].lineno, 7)
+        self.assertEqual(src.type_ignores[1].lineno, 9)
+        self.assertEqual(src.type_ignores[1].tag, "@tag")
+
+    def test_iter_fields(self):
+        node = ast.parse("foo()", mode="eval")
+        d = dict(ast.iter_fields(node.body))
+        self.assertEqual(d.pop("func").id, "foo")
+        self.assertEqual(d, {"keywords": [], "args": []})
+
+    def test_iter_child_nodes(self):
+        node = ast.parse("spam(23, 42, eggs='leek')", mode="eval")
+        self.assertEqual(len(list(ast.iter_child_nodes(node.body))), 4)
+        iterator = ast.iter_child_nodes(node.body)
+        self.assertEqual(next(iterator).id, "spam")
+        self.assertEqual(next(iterator).value, 23)
+        self.assertEqual(next(iterator).value, 42)
+        self.assertEqual(
+            ast.dump(next(iterator)),
+            "keyword(arg='eggs', value=Constant(value='leek'))",
+        )
+
+    def test_get_docstring(self):
+        node = ast.parse('"""line one\n  line two"""')
+        self.assertEqual(ast.get_docstring(node), "line one\nline two")
+
+        node = ast.parse('class foo:\n  """line one\n  line two"""')
+        self.assertEqual(ast.get_docstring(node.body[0]), "line one\nline two")
+
+        node = ast.parse('def foo():\n  """line one\n  line two"""')
+        self.assertEqual(ast.get_docstring(node.body[0]), "line one\nline two")
+
+        node = ast.parse('async def foo():\n  """spam\n  ham"""')
+        self.assertEqual(ast.get_docstring(node.body[0]), "spam\nham")
+
+        node = ast.parse('async def foo():\n  """spam\n  ham"""')
+        self.assertEqual(ast.get_docstring(node.body[0], clean=False), "spam\n  ham")
+
+        node = ast.parse("x")
+        self.assertRaises(TypeError, ast.get_docstring, node.body[0])
+
+    def test_get_docstring_none(self):
+        self.assertIsNone(ast.get_docstring(ast.parse("")))
+        node = ast.parse('x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node))
+        node = ast.parse("def foo():\n  pass")
+        self.assertIsNone(ast.get_docstring(node))
+
+        node = ast.parse("class foo:\n  pass")
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('class foo:\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse("class foo:\n  def bar(self): pass")
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+        node = ast.parse("def foo():\n  pass")
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('def foo():\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+        node = ast.parse("async def foo():\n  pass")
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+        node = ast.parse('async def foo():\n  x = "not docstring"')
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+        node = ast.parse("async def foo():\n  42")
+        self.assertIsNone(ast.get_docstring(node.body[0]))
+
+    def test_multi_line_docstring_col_offset_and_lineno_issue16806(self):
+        node = ast.parse(
+            '"""line one\nline two"""\n\n'
+            'def foo():\n  """line one\n  line two"""\n\n'
+            '  def bar():\n    """line one\n    line two"""\n'
+            '  """line one\n  line two"""\n'
+            '"""line one\nline two"""\n\n'
+        )
+        self.assertEqual(node.body[0].col_offset, 0)
+        self.assertEqual(node.body[0].lineno, 1)
+        self.assertEqual(node.body[1].body[0].col_offset, 2)
+        self.assertEqual(node.body[1].body[0].lineno, 5)
+        self.assertEqual(node.body[1].body[1].body[0].col_offset, 4)
+        self.assertEqual(node.body[1].body[1].body[0].lineno, 9)
+        self.assertEqual(node.body[1].body[2].col_offset, 2)
+        self.assertEqual(node.body[1].body[2].lineno, 11)
+        self.assertEqual(node.body[2].col_offset, 0)
+        self.assertEqual(node.body[2].lineno, 13)
+
+    def test_elif_stmt_start_position(self):
+        node = ast.parse("if a:\n    pass\nelif b:\n    pass\n")
+        elif_stmt = node.body[0].orelse[0]
+        self.assertEqual(elif_stmt.lineno, 3)
+        self.assertEqual(elif_stmt.col_offset, 0)
+
+    def test_elif_stmt_start_position_with_else(self):
+        node = ast.parse("if a:\n    pass\nelif b:\n    pass\nelse:\n    pass\n")
+        elif_stmt = node.body[0].orelse[0]
+        self.assertEqual(elif_stmt.lineno, 3)
+        self.assertEqual(elif_stmt.col_offset, 0)
+
+    def test_starred_expr_end_position_within_call(self):
+        node = ast.parse("f(*[0, 1])")
+        starred_expr = node.body[0].value.args[0]
+        self.assertEqual(starred_expr.end_lineno, 1)
+        self.assertEqual(starred_expr.end_col_offset, 9)
+
+    def test_literal_eval(self):
+        self.assertEqual(ast.literal_eval("[1, 2, 3]"), [1, 2, 3])
+        self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
+        self.assertEqual(ast.literal_eval("(True, False, None)"), (True, False, None))
+        self.assertEqual(ast.literal_eval("{1, 2, 3}"), {1, 2, 3})
+        self.assertEqual(ast.literal_eval('b"hi"'), b"hi")
+        self.assertEqual(ast.literal_eval("set()"), set())
+        self.assertRaises(ValueError, ast.literal_eval, "foo()")
+        self.assertEqual(ast.literal_eval("6"), 6)
+        self.assertEqual(ast.literal_eval("+6"), 6)
+        self.assertEqual(ast.literal_eval("-6"), -6)
+        self.assertEqual(ast.literal_eval("3.25"), 3.25)
+        self.assertEqual(ast.literal_eval("+3.25"), 3.25)
+        self.assertEqual(ast.literal_eval("-3.25"), -3.25)
+        self.assertEqual(repr(ast.literal_eval("-0.0")), "-0.0")
+        self.assertRaises(ValueError, ast.literal_eval, "++6")
+        self.assertRaises(ValueError, ast.literal_eval, "+True")
+        self.assertRaises(ValueError, ast.literal_eval, "2+3")
+
+    def test_literal_eval_str_int_limit(self):
+        with support.adjust_int_max_str_digits(4000):
+            ast.literal_eval("3" * 4000)  # no error
+            with self.assertRaises(SyntaxError) as err_ctx:
+                ast.literal_eval("3" * 4001)
+            self.assertIn("Exceeds the limit ", str(err_ctx.exception))
+            self.assertIn(" Consider hexadecimal ", str(err_ctx.exception))
+
+    def test_literal_eval_complex(self):
+        # Issue #4907
+        self.assertEqual(ast.literal_eval("6j"), 6j)
+        self.assertEqual(ast.literal_eval("-6j"), -6j)
+        self.assertEqual(ast.literal_eval("6.75j"), 6.75j)
+        self.assertEqual(ast.literal_eval("-6.75j"), -6.75j)
+        self.assertEqual(ast.literal_eval("3+6j"), 3 + 6j)
+        self.assertEqual(ast.literal_eval("-3+6j"), -3 + 6j)
+        self.assertEqual(ast.literal_eval("3-6j"), 3 - 6j)
+        self.assertEqual(ast.literal_eval("-3-6j"), -3 - 6j)
+        self.assertEqual(ast.literal_eval("3.25+6.75j"), 3.25 + 6.75j)
+        self.assertEqual(ast.literal_eval("-3.25+6.75j"), -3.25 + 6.75j)
+        self.assertEqual(ast.literal_eval("3.25-6.75j"), 3.25 - 6.75j)
+        self.assertEqual(ast.literal_eval("-3.25-6.75j"), -3.25 - 6.75j)
+        self.assertEqual(ast.literal_eval("(3+6j)"), 3 + 6j)
+        self.assertRaises(ValueError, ast.literal_eval, "-6j+3")
+        self.assertRaises(ValueError, ast.literal_eval, "-6j+3j")
+        self.assertRaises(ValueError, ast.literal_eval, "3+-6j")
+        self.assertRaises(ValueError, ast.literal_eval, "3+(0+6j)")
+        self.assertRaises(ValueError, ast.literal_eval, "-(3+6j)")
+
+    def test_literal_eval_malformed_dict_nodes(self):
+        malformed = ast.Dict(
+            keys=[ast.Constant(1), ast.Constant(2)], values=[ast.Constant(3)]
+        )
+        self.assertRaises(ValueError, ast.literal_eval, malformed)
+        malformed = ast.Dict(
+            keys=[ast.Constant(1)], values=[ast.Constant(2), ast.Constant(3)]
+        )
+        self.assertRaises(ValueError, ast.literal_eval, malformed)
+
+    def test_literal_eval_trailing_ws(self):
+        self.assertEqual(ast.literal_eval("    -1"), -1)
+        self.assertEqual(ast.literal_eval("\t\t-1"), -1)
+        self.assertEqual(ast.literal_eval(" \t -1"), -1)
+        self.assertRaises(IndentationError, ast.literal_eval, "\n -1")
+
+    def test_literal_eval_malformed_lineno(self):
+        msg = r"malformed node or string on line 3:"
+        with self.assertRaisesRegex(ValueError, msg):
+            ast.literal_eval("{'a': 1,\n'b':2,\n'c':++3,\n'd':4}")
+
+        node = ast.UnaryOp(ast.UAdd(), ast.UnaryOp(ast.UAdd(), ast.Constant(6)))
+        self.assertIsNone(getattr(node, "lineno", None))
+        msg = r"malformed node or string:"
+        with self.assertRaisesRegex(ValueError, msg):
+            ast.literal_eval(node)
+
+    def test_literal_eval_syntax_errors(self):
+        with self.assertRaisesRegex(SyntaxError, "unexpected indent"):
+            ast.literal_eval(r"""
+                \
+                (\
+            \ """)
+
+    def test_bad_integer(self):
+        # issue13436: Bad error message with invalid numeric values
+        body = [
+            ast.ImportFrom(
+                module="time",
+                names=[ast.alias(name="sleep")],
+                level=None,
+                lineno=None,
+                col_offset=None,
+            )
+        ]
+        mod = ast.Module(body, [])
+        with self.assertRaises(ValueError) as cm:
+            compile(mod, "test", "exec")
+        self.assertIn("invalid integer value: None", str(cm.exception))
+
+    def test_level_as_none(self):
+        body = [
+            ast.ImportFrom(
+                module="time",
+                names=[ast.alias(name="sleep", lineno=0, col_offset=0)],
+                level=None,
+                lineno=0,
+                col_offset=0,
+            )
+        ]
+        mod = ast.Module(body, [])
+        code = compile(mod, "test", "exec")
+        ns = {}
+        exec(code, ns)
+        self.assertIn("sleep", ns)
+
+    def test_recursion_direct(self):
+        e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
+        e.operand = e
+        with self.assertRaises(RecursionError):
+            with support.infinite_recursion():
+                compile(ast.Expression(e), "<test>", "eval")
+
+    def test_recursion_indirect(self):
+        e = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
+        f = ast.UnaryOp(op=ast.Not(), lineno=0, col_offset=0, operand=ast.Constant(1))
+        e.operand = f
+        f.operand = e
+        with self.assertRaises(RecursionError):
+            with support.infinite_recursion():
+                compile(ast.Expression(e), "<test>", "eval")
+
+
+class ASTValidatorTests(unittest.TestCase):
+    def mod(self, mod, msg=None, mode="exec", *, exc=ValueError):
+        mod.lineno = mod.col_offset = 0
+        ast.fix_missing_locations(mod)
+        if msg is None:
+            compile(mod, "<test>", mode)
+        else:
+            with self.assertRaises(exc) as cm:
+                compile(mod, "<test>", mode)
+            self.assertIn(msg, str(cm.exception))
+
+    def expr(self, node, msg=None, *, exc=ValueError):
+        mod = ast.Module([ast.Expr(node)], [])
+        self.mod(mod, msg, exc=exc)
+
+    def stmt(self, stmt, msg=None):
+        mod = ast.Module([stmt], [])
+        self.mod(mod, msg)
+
+    def test_module(self):
+        m = ast.Interactive([ast.Expr(ast.Name("x", ast.Store()))])
+        self.mod(m, "must have Load context", "single")
+        m = ast.Expression(ast.Name("x", ast.Store()))
+        self.mod(m, "must have Load context", "eval")
+
+    def _check_arguments(self, fac, check):
+        def arguments(
+            args=None,
+            posonlyargs=None,
+            vararg=None,
+            kwonlyargs=None,
+            kwarg=None,
+            defaults=None,
+            kw_defaults=None,
+        ):
+            if args is None:
+                args = []
+            if posonlyargs is None:
+                posonlyargs = []
+            if kwonlyargs is None:
+                kwonlyargs = []
+            if defaults is None:
+                defaults = []
+            if kw_defaults is None:
+                kw_defaults = []
+            args = ast.arguments(
+                args, posonlyargs, vararg, kwonlyargs, kw_defaults, kwarg, defaults
+            )
+            return fac(args)
+
+        args = [ast.arg("x", ast.Name("x", ast.Store()))]
+        check(arguments(args=args), "must have Load context")
+        check(arguments(posonlyargs=args), "must have Load context")
+        check(arguments(kwonlyargs=args), "must have Load context")
+        check(
+            arguments(defaults=[ast.Constant(3)]), "more positional defaults than args"
+        )
+        check(
+            arguments(kw_defaults=[ast.Constant(4)]),
+            "length of kwonlyargs is not the same as kw_defaults",
+        )
+        args = [ast.arg("x", ast.Name("x", ast.Load()))]
+        check(
+            arguments(args=args, defaults=[ast.Name("x", ast.Store())]),
+            "must have Load context",
+        )
+        args = [
+            ast.arg("a", ast.Name("x", ast.Load())),
+            ast.arg("b", ast.Name("y", ast.Load())),
+        ]
+        check(
+            arguments(kwonlyargs=args, kw_defaults=[None, ast.Name("x", ast.Store())]),
+            "must have Load context",
+        )
+
+    def test_funcdef(self):
+        a = ast.arguments([], [], None, [], [], None, [])
+        f = ast.FunctionDef("x", a, [], [], None, None, [])
+        self.stmt(f, "empty body on FunctionDef")
+        f = ast.FunctionDef(
+            "x", a, [ast.Pass()], [ast.Name("x", ast.Store())], None, None, []
+        )
+        self.stmt(f, "must have Load context")
+        f = ast.FunctionDef(
+            "x", a, [ast.Pass()], [], ast.Name("x", ast.Store()), None, []
+        )
+        self.stmt(f, "must have Load context")
+        f = ast.FunctionDef("x", ast.arguments(), [ast.Pass()])
+        self.stmt(f)
+
+        def fac(args):
+            return ast.FunctionDef("x", args, [ast.Pass()], [], None, None, [])
+
+        self._check_arguments(fac, self.stmt)
+
+    def test_funcdef_pattern_matching(self):
+        # gh-104799: New fields on FunctionDef should be added at the end
+        def matcher(node):
+            match node:
+                case ast.FunctionDef(
+                    "foo",
+                    ast.arguments(args=[ast.arg("bar")]),
+                    [ast.Pass()],
+                    [ast.Name("capybara", ast.Load())],
+                    ast.Name("pacarana", ast.Load()),
+                ):
+                    return True
+                case _:
+                    return False
+
+        code = """
+            @capybara
+            def foo(bar) -> pacarana:
+                pass
+        """
+        source = ast.parse(textwrap.dedent(code))
+        funcdef = source.body[0]
+        self.assertIsInstance(funcdef, ast.FunctionDef)
+        self.assertTrue(matcher(funcdef))
+
+    def test_classdef(self):
+        def cls(
+            bases=None, keywords=None, body=None, decorator_list=None, type_params=None
+        ):
+            if bases is None:
+                bases = []
+            if keywords is None:
+                keywords = []
+            if body is None:
+                body = [ast.Pass()]
+            if decorator_list is None:
+                decorator_list = []
+            if type_params is None:
+                type_params = []
+            return ast.ClassDef(
+                "myclass", bases, keywords, body, decorator_list, type_params
+            )
+
+        self.stmt(cls(bases=[ast.Name("x", ast.Store())]), "must have Load context")
+        self.stmt(
+            cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
+            "must have Load context",
+        )
+        self.stmt(cls(body=[]), "empty body on ClassDef")
+        self.stmt(cls(body=[None]), "None disallowed")
+        self.stmt(
+            cls(decorator_list=[ast.Name("x", ast.Store())]), "must have Load context"
+        )
+
+    def test_delete(self):
+        self.stmt(ast.Delete([]), "empty targets on Delete")
+        self.stmt(ast.Delete([None]), "None disallowed")
+        self.stmt(ast.Delete([ast.Name("x", ast.Load())]), "must have Del context")
+
+    def test_assign(self):
+        self.stmt(ast.Assign([], ast.Constant(3)), "empty targets on Assign")
+        self.stmt(ast.Assign([None], ast.Constant(3)), "None disallowed")
+        self.stmt(
+            ast.Assign([ast.Name("x", ast.Load())], ast.Constant(3)),
+            "must have Store context",
+        )
+        self.stmt(
+            ast.Assign([ast.Name("x", ast.Store())], ast.Name("y", ast.Store())),
+            "must have Load context",
+        )
+
+    def test_augassign(self):
+        aug = ast.AugAssign(
+            ast.Name("x", ast.Load()), ast.Add(), ast.Name("y", ast.Load())
+        )
+        self.stmt(aug, "must have Store context")
+        aug = ast.AugAssign(
+            ast.Name("x", ast.Store()), ast.Add(), ast.Name("y", ast.Store())
+        )
+        self.stmt(aug, "must have Load context")
+
+    def test_for(self):
+        x = ast.Name("x", ast.Store())
+        y = ast.Name("y", ast.Load())
+        p = ast.Pass()
+        self.stmt(ast.For(x, y, [], []), "empty body on For")
+        self.stmt(
+            ast.For(ast.Name("x", ast.Load()), y, [p], []), "must have Store context"
+        )
+        self.stmt(
+            ast.For(x, ast.Name("y", ast.Store()), [p], []), "must have Load context"
+        )
+        e = ast.Expr(ast.Name("x", ast.Store()))
+        self.stmt(ast.For(x, y, [e], []), "must have Load context")
+        self.stmt(ast.For(x, y, [p], [e]), "must have Load context")
+
+    def test_while(self):
+        self.stmt(ast.While(ast.Constant(3), [], []), "empty body on While")
+        self.stmt(
+            ast.While(ast.Name("x", ast.Store()), [ast.Pass()], []),
+            "must have Load context",
+        )
+        self.stmt(
+            ast.While(
+                ast.Constant(3), [ast.Pass()], [ast.Expr(ast.Name("x", ast.Store()))]
+            ),
+            "must have Load context",
+        )
+
+    def test_if(self):
+        self.stmt(ast.If(ast.Constant(3), [], []), "empty body on If")
+        i = ast.If(ast.Name("x", ast.Store()), [ast.Pass()], [])
+        self.stmt(i, "must have Load context")
+        i = ast.If(ast.Constant(3), [ast.Expr(ast.Name("x", ast.Store()))], [])
+        self.stmt(i, "must have Load context")
+        i = ast.If(
+            ast.Constant(3), [ast.Pass()], [ast.Expr(ast.Name("x", ast.Store()))]
+        )
+        self.stmt(i, "must have Load context")
+
+    def test_with(self):
+        p = ast.Pass()
+        self.stmt(ast.With([], [p]), "empty items on With")
+        i = ast.withitem(ast.Constant(3), None)
+        self.stmt(ast.With([i], []), "empty body on With")
+        i = ast.withitem(ast.Name("x", ast.Store()), None)
+        self.stmt(ast.With([i], [p]), "must have Load context")
+        i = ast.withitem(ast.Constant(3), ast.Name("x", ast.Load()))
+        self.stmt(ast.With([i], [p]), "must have Store context")
+
+    def test_raise(self):
+        r = ast.Raise(None, ast.Constant(3))
+        self.stmt(r, "Raise with cause but no exception")
+        r = ast.Raise(ast.Name("x", ast.Store()), None)
+        self.stmt(r, "must have Load context")
+        r = ast.Raise(ast.Constant(4), ast.Name("x", ast.Store()))
+        self.stmt(r, "must have Load context")
+
+    def test_try(self):
+        p = ast.Pass()
+        t = ast.Try([], [], [], [p])
+        self.stmt(t, "empty body on Try")
+        t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
+        self.stmt(t, "must have Load context")
+        t = ast.Try([p], [], [], [])
+        self.stmt(t, "Try has neither except handlers nor finalbody")
+        t = ast.Try([p], [], [p], [p])
+        self.stmt(t, "Try has orelse but no except handlers")
+        t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
+        self.stmt(t, "empty body on ExceptHandler")
+        e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
+        self.stmt(ast.Try([p], e, [], []), "must have Load context")
+        e = [ast.ExceptHandler(None, "x", [p])]
+        t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
+        self.stmt(t, "must have Load context")
+        t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
+        self.stmt(t, "must have Load context")
+
+    def test_try_star(self):
+        p = ast.Pass()
+        t = ast.TryStar([], [], [], [p])
+        self.stmt(t, "empty body on TryStar")
+        t = ast.TryStar([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
+        self.stmt(t, "must have Load context")
+        t = ast.TryStar([p], [], [], [])
+        self.stmt(t, "TryStar has neither except handlers nor finalbody")
+        t = ast.TryStar([p], [], [p], [p])
+        self.stmt(t, "TryStar has orelse but no except handlers")
+        t = ast.TryStar([p], [ast.ExceptHandler(None, "x", [])], [], [])
+        self.stmt(t, "empty body on ExceptHandler")
+        e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
+        self.stmt(ast.TryStar([p], e, [], []), "must have Load context")
+        e = [ast.ExceptHandler(None, "x", [p])]
+        t = ast.TryStar([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
+        self.stmt(t, "must have Load context")
+        t = ast.TryStar([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
+        self.stmt(t, "must have Load context")
+
+    def test_assert(self):
+        self.stmt(
+            ast.Assert(ast.Name("x", ast.Store()), None), "must have Load context"
+        )
+        assrt = ast.Assert(ast.Name("x", ast.Load()), ast.Name("y", ast.Store()))
+        self.stmt(assrt, "must have Load context")
+
+    def test_import(self):
+        self.stmt(ast.Import([]), "empty names on Import")
+
+    def test_importfrom(self):
+        imp = ast.ImportFrom(None, [ast.alias("x", None)], -42)
+        self.stmt(imp, "Negative ImportFrom level")
+        self.stmt(ast.ImportFrom(None, [], 0), "empty names on ImportFrom")
+
+    def test_global(self):
+        self.stmt(ast.Global([]), "empty names on Global")
+
+    def test_nonlocal(self):
+        self.stmt(ast.Nonlocal([]), "empty names on Nonlocal")
+
+    def test_expr(self):
+        e = ast.Expr(ast.Name("x", ast.Store()))
+        self.stmt(e, "must have Load context")
+
+    def test_boolop(self):
+        b = ast.BoolOp(ast.And(), [])
+        self.expr(b, "less than 2 values")
+        b = ast.BoolOp(ast.And(), [ast.Constant(3)])
+        self.expr(b, "less than 2 values")
+        b = ast.BoolOp(ast.And(), [ast.Constant(4), None])
+        self.expr(b, "None disallowed")
+        b = ast.BoolOp(ast.And(), [ast.Constant(4), ast.Name("x", ast.Store())])
+        self.expr(b, "must have Load context")
+
+    def test_unaryop(self):
+        u = ast.UnaryOp(ast.Not(), ast.Name("x", ast.Store()))
+        self.expr(u, "must have Load context")
+
+    def test_lambda(self):
+        a = ast.arguments([], [], None, [], [], None, [])
+        self.expr(ast.Lambda(a, ast.Name("x", ast.Store())), "must have Load context")
+
+        def fac(args):
+            return ast.Lambda(args, ast.Name("x", ast.Load()))
+
+        self._check_arguments(fac, self.expr)
+
+    def test_ifexp(self):
+        l = ast.Name("x", ast.Load())
+        s = ast.Name("y", ast.Store())
+        for args in (s, l, l), (l, s, l), (l, l, s):
+            self.expr(ast.IfExp(*args), "must have Load context")
+
+    def test_dict(self):
+        d = ast.Dict([], [ast.Name("x", ast.Load())])
+        self.expr(d, "same number of keys as values")
+        d = ast.Dict([ast.Name("x", ast.Load())], [None])
+        self.expr(d, "None disallowed")
+
+    def test_set(self):
+        self.expr(ast.Set([None]), "None disallowed")
+        s = ast.Set([ast.Name("x", ast.Store())])
+        self.expr(s, "must have Load context")
+
+    def _check_comprehension(self, fac):
+        self.expr(fac([]), "comprehension with no generators")
+        g = ast.comprehension(
+            ast.Name("x", ast.Load()), ast.Name("x", ast.Load()), [], 0
+        )
+        self.expr(fac([g]), "must have Store context")
+        g = ast.comprehension(
+            ast.Name("x", ast.Store()), ast.Name("x", ast.Store()), [], 0
+        )
+        self.expr(fac([g]), "must have Load context")
+        x = ast.Name("x", ast.Store())
+        y = ast.Name("y", ast.Load())
+        g = ast.comprehension(x, y, [None], 0)
+        self.expr(fac([g]), "None disallowed")
+        g = ast.comprehension(x, y, [ast.Name("x", ast.Store())], 0)
+        self.expr(fac([g]), "must have Load context")
+
+    def _simple_comp(self, fac):
+        g = ast.comprehension(
+            ast.Name("x", ast.Store()), ast.Name("x", ast.Load()), [], 0
+        )
+        self.expr(fac(ast.Name("x", ast.Store()), [g]), "must have Load context")
+
+        def wrap(gens):
+            return fac(ast.Name("x", ast.Store()), gens)
+
+        self._check_comprehension(wrap)
+
+    def test_listcomp(self):
+        self._simple_comp(ast.ListComp)
+
+    def test_setcomp(self):
+        self._simple_comp(ast.SetComp)
+
+    def test_generatorexp(self):
+        self._simple_comp(ast.GeneratorExp)
+
+    def test_dictcomp(self):
+        g = ast.comprehension(
+            ast.Name("y", ast.Store()), ast.Name("p", ast.Load()), [], 0
+        )
+        c = ast.DictComp(ast.Name("x", ast.Store()), ast.Name("y", ast.Load()), [g])
+        self.expr(c, "must have Load context")
+        c = ast.DictComp(ast.Name("x", ast.Load()), ast.Name("y", ast.Store()), [g])
+        self.expr(c, "must have Load context")
+
+        def factory(comps):
+            k = ast.Name("x", ast.Load())
+            v = ast.Name("y", ast.Load())
+            return ast.DictComp(k, v, comps)
+
+        self._check_comprehension(factory)
+
+    def test_yield(self):
+        self.expr(ast.Yield(ast.Name("x", ast.Store())), "must have Load")
+        self.expr(ast.YieldFrom(ast.Name("x", ast.Store())), "must have Load")
+
+    def test_compare(self):
+        left = ast.Name("x", ast.Load())
+        comp = ast.Compare(left, [ast.In()], [])
+        self.expr(comp, "no comparators")
+        comp = ast.Compare(left, [ast.In()], [ast.Constant(4), ast.Constant(5)])
+        self.expr(comp, "different number of comparators and operands")
+        comp = ast.Compare(ast.Constant("blah"), [ast.In()], [left])
+        self.expr(comp)
+        comp = ast.Compare(left, [ast.In()], [ast.Constant("blah")])
+        self.expr(comp)
+
+    def test_call(self):
+        func = ast.Name("x", ast.Load())
+        args = [ast.Name("y", ast.Load())]
+        keywords = [ast.keyword("w", ast.Name("z", ast.Load()))]
+        call = ast.Call(ast.Name("x", ast.Store()), args, keywords)
+        self.expr(call, "must have Load context")
+        call = ast.Call(func, [None], keywords)
+        self.expr(call, "None disallowed")
+        bad_keywords = [ast.keyword("w", ast.Name("z", ast.Store()))]
+        call = ast.Call(func, args, bad_keywords)
+        self.expr(call, "must have Load context")
+
+    def test_num(self):
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import Num
+
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+
+            class subint(int):
+                pass
+
+            class subfloat(float):
+                pass
+
+            class subcomplex(complex):
+                pass
+
+            for obj in "0", "hello":
+                self.expr(ast.Num(obj))
+            for obj in subint(), subfloat(), subcomplex():
+                self.expr(ast.Num(obj), "invalid type", exc=TypeError)
+
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+                "ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+            ],
+        )
+
+    def test_attribute(self):
+        attr = ast.Attribute(ast.Name("x", ast.Store()), "y", ast.Load())
+        self.expr(attr, "must have Load context")
+
+    def test_subscript(self):
+        sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Constant(3), ast.Load())
+        self.expr(sub, "must have Load context")
+        x = ast.Name("x", ast.Load())
+        sub = ast.Subscript(x, ast.Name("y", ast.Store()), ast.Load())
+        self.expr(sub, "must have Load context")
+        s = ast.Name("x", ast.Store())
+        for args in (s, None, None), (None, s, None), (None, None, s):
+            sl = ast.Slice(*args)
+            self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")
+        sl = ast.Tuple([], ast.Load())
+        self.expr(ast.Subscript(x, sl, ast.Load()))
+        sl = ast.Tuple([s], ast.Load())
+        self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")
+
+    def test_starred(self):
+        left = ast.List(
+            [ast.Starred(ast.Name("x", ast.Load()), ast.Store())], ast.Store()
+        )
+        assign = ast.Assign([left], ast.Constant(4))
+        self.stmt(assign, "must have Store context")
+
+    def _sequence(self, fac):
+        self.expr(fac([None], ast.Load()), "None disallowed")
+        self.expr(
+            fac([ast.Name("x", ast.Store())], ast.Load()), "must have Load context"
+        )
+
+    def test_list(self):
+        self._sequence(ast.List)
+
+    def test_tuple(self):
+        self._sequence(ast.Tuple)
+
+    def test_nameconstant(self):
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("ignore", "", DeprecationWarning)
+            from ast import NameConstant
+
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+            self.expr(ast.NameConstant(4))
+
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "ast.NameConstant is deprecated and will be removed in Python 3.14; use ast.Constant instead",
+            ],
+        )
+
+    @support.requires_resource("cpu")
+    def test_stdlib_validates(self):
+        stdlib = os.path.dirname(ast.__file__)
+        tests = [fn for fn in os.listdir(stdlib) if fn.endswith(".py")]
+        tests.extend(["test/test_grammar.py", "test/test_unpack_ex.py"])
+        for module in tests:
+            with self.subTest(module):
+                fn = os.path.join(stdlib, module)
+                with open(fn, "r", encoding="utf-8") as fp:
+                    source = fp.read()
+                mod = ast.parse(source, fn)
+                compile(mod, fn, "exec")
+
+    constant_1 = ast.Constant(1)
+    pattern_1 = ast.MatchValue(constant_1)
+
+    constant_x = ast.Constant("x")
+    pattern_x = ast.MatchValue(constant_x)
+
+    constant_true = ast.Constant(True)
+    pattern_true = ast.MatchSingleton(True)
+
+    name_carter = ast.Name("carter", ast.Load())
+
+    _MATCH_PATTERNS = [
+        ast.MatchValue(
+            ast.Attribute(
+                ast.Attribute(ast.Name("x", ast.Store()), "y", ast.Load()),
+                "z",
+                ast.Load(),
+            )
+        ),
+        ast.MatchValue(
+            ast.Attribute(
+                ast.Attribute(ast.Name("x", ast.Load()), "y", ast.Store()),
+                "z",
+                ast.Load(),
+            )
+        ),
+        ast.MatchValue(ast.Constant(...)),
+        ast.MatchValue(ast.Constant(True)),
+        ast.MatchValue(ast.Constant((1, 2, 3))),
+        ast.MatchSingleton("string"),
+        ast.MatchSequence([ast.MatchSingleton("string")]),
+        ast.MatchSequence([ast.MatchSequence([ast.MatchSingleton("string")])]),
+        ast.MatchMapping([constant_1, constant_true], [pattern_x]),
+        ast.MatchMapping(
+            [constant_true, constant_1], [pattern_x, pattern_1], rest="True"
+        ),
+        ast.MatchMapping(
+            [constant_true, ast.Starred(ast.Name("lol", ast.Load()), ast.Load())],
+            [pattern_x, pattern_1],
+            rest="legit",
+        ),
+        ast.MatchClass(
+            ast.Attribute(ast.Attribute(constant_x, "y", ast.Load()), "z", ast.Load()),
+            patterns=[],
+            kwd_attrs=[],
+            kwd_patterns=[],
+        ),
+        ast.MatchClass(
+            name_carter, patterns=[], kwd_attrs=["True"], kwd_patterns=[pattern_1]
+        ),
+        ast.MatchClass(
+            name_carter, patterns=[], kwd_attrs=[], kwd_patterns=[pattern_1]
+        ),
+        ast.MatchClass(
+            name_carter,
+            patterns=[ast.MatchSingleton("string")],
+            kwd_attrs=[],
+            kwd_patterns=[],
+        ),
+        ast.MatchClass(
+            name_carter, patterns=[ast.MatchStar()], kwd_attrs=[], kwd_patterns=[]
+        ),
+        ast.MatchClass(
+            name_carter, patterns=[], kwd_attrs=[], kwd_patterns=[ast.MatchStar()]
+        ),
+        ast.MatchClass(
+            constant_true,  # invalid name
+            patterns=[],
+            kwd_attrs=["True"],
+            kwd_patterns=[pattern_1],
+        ),
+        ast.MatchSequence([ast.MatchStar("True")]),
+        ast.MatchAs(name="False"),
+        ast.MatchOr([]),
+        ast.MatchOr([pattern_1]),
+        ast.MatchOr([pattern_1, pattern_x, ast.MatchSingleton("xxx")]),
+        ast.MatchAs(name="_"),
+        ast.MatchStar(name="x"),
+        ast.MatchSequence([ast.MatchStar("_")]),
+        ast.MatchMapping([], [], rest="_"),
+    ]
+
+    def test_match_validation_pattern(self):
+        name_x = ast.Name("x", ast.Load())
+        for pattern in self._MATCH_PATTERNS:
+            with self.subTest(ast.dump(pattern, indent=4)):
+                node = ast.Match(
+                    subject=name_x,
+                    cases=[ast.match_case(pattern=pattern, body=[ast.Pass()])],
+                )
+                node = ast.fix_missing_locations(node)
+                module = ast.Module([node], [])
+                with self.assertRaises(ValueError):
+                    compile(module, "<test>", "exec")
+
+
+class ConstantTests(unittest.TestCase):
+    """Tests on the ast.Constant node type."""
+
+    def compile_constant(self, value):
+        tree = ast.parse("x = 123")
+
+        node = tree.body[0].value
+        new_node = ast.Constant(value=value)
+        ast.copy_location(new_node, node)
+        tree.body[0].value = new_node
+
+        code = compile(tree, "<string>", "exec")
+
+        ns = {}
+        exec(code, ns)
+        return ns["x"]
+
+    def test_validation(self):
+        with self.assertRaises(TypeError) as cm:
+            self.compile_constant([1, 2, 3])
+        self.assertEqual(str(cm.exception), "got an invalid type in Constant: list")
+
+    def test_singletons(self):
+        for const in (None, False, True, Ellipsis, b"", frozenset()):
+            with self.subTest(const=const):
+                value = self.compile_constant(const)
+                self.assertIs(value, const)
+
+    def test_values(self):
+        nested_tuple = (1,)
+        nested_frozenset = frozenset({1})
+        for level in range(3):
+            nested_tuple = (nested_tuple, 2)
+            nested_frozenset = frozenset({nested_frozenset, 2})
+        values = (
+            123,
+            123.0,
+            123j,
+            "unicode",
+            b"bytes",
+            tuple("tuple"),
+            frozenset("frozenset"),
+            nested_tuple,
+            nested_frozenset,
+        )
+        for value in values:
+            with self.subTest(value=value):
+                result = self.compile_constant(value)
+                self.assertEqual(result, value)
+
+    def test_assign_to_constant(self):
+        tree = ast.parse("x = 1")
+
+        target = tree.body[0].targets[0]
+        new_target = ast.Constant(value=1)
+        ast.copy_location(new_target, target)
+        tree.body[0].targets[0] = new_target
+
+        with self.assertRaises(ValueError) as cm:
+            compile(tree, "string", "exec")
+        self.assertEqual(
+            str(cm.exception),
+            "expression which can't be assigned " "to in Store context",
+        )
+
+    def test_get_docstring(self):
+        tree = ast.parse("'docstring'\nx = 1")
+        self.assertEqual(ast.get_docstring(tree), "docstring")
+
+    def get_load_const(self, tree):
+        # Compile to bytecode, disassemble and get parameter of LOAD_CONST
+        # instructions
+        co = compile(tree, "<string>", "exec")
+        consts = []
+        for instr in dis.get_instructions(co):
+            if instr.opname == "LOAD_CONST" or instr.opname == "RETURN_CONST":
+                consts.append(instr.argval)
+        return consts
+
+    @support.cpython_only
+    def test_load_const(self):
+        consts = [None, True, False, 124, 2.0, 3j, "unicode", b"bytes", (1, 2, 3)]
+
+        code = "\n".join(["x={!r}".format(const) for const in consts])
+        code += "\nx = ..."
+        consts.extend((Ellipsis, None))
+
+        tree = ast.parse(code)
+        self.assertEqual(self.get_load_const(tree), consts)
+
+        # Replace expression nodes with constants
+        for assign, const in zip(tree.body, consts):
+            assert isinstance(assign, ast.Assign), ast.dump(assign)
+            new_node = ast.Constant(value=const)
+            ast.copy_location(new_node, assign.value)
+            assign.value = new_node
+
+        self.assertEqual(self.get_load_const(tree), consts)
+
+    def test_literal_eval(self):
+        tree = ast.parse("1 + 2")
+        binop = tree.body[0].value
+
+        new_left = ast.Constant(value=10)
+        ast.copy_location(new_left, binop.left)
+        binop.left = new_left
+
+        new_right = ast.Constant(value=20j)
+        ast.copy_location(new_right, binop.right)
+        binop.right = new_right
+
+        self.assertEqual(ast.literal_eval(binop), 10 + 20j)
+
+    def test_string_kind(self):
+        c = ast.parse('"x"', mode="eval").body
+        self.assertEqual(c.value, "x")
+        self.assertEqual(c.kind, None)
+
+        c = ast.parse('u"x"', mode="eval").body
+        self.assertEqual(c.value, "x")
+        self.assertEqual(c.kind, "u")
+
+        c = ast.parse('r"x"', mode="eval").body
+        self.assertEqual(c.value, "x")
+        self.assertEqual(c.kind, None)
+
+        c = ast.parse('b"x"', mode="eval").body
+        self.assertEqual(c.value, b"x")
+        self.assertEqual(c.kind, None)
+
+
+class EndPositionTests(unittest.TestCase):
+    """Tests for end position of AST nodes.
+
+    Testing end positions of nodes requires a bit of extra care
+    because of how LL parsers work.
+    """
+
+    def _check_end_pos(self, ast_node, end_lineno, end_col_offset):
+        self.assertEqual(ast_node.end_lineno, end_lineno)
+        self.assertEqual(ast_node.end_col_offset, end_col_offset)
+
+    def _check_content(self, source, ast_node, content):
+        self.assertEqual(ast.get_source_segment(source, ast_node), content)
+
+    def _parse_value(self, s):
+        # Use duck-typing to support both single expression
+        # and a right hand side of an assignment statement.
+        return ast.parse(s).body[0].value
+
+    def test_lambda(self):
+        s = "lambda x, *y: None"
+        lam = self._parse_value(s)
+        self._check_content(s, lam.body, "None")
+        self._check_content(s, lam.args.args[0], "x")
+        self._check_content(s, lam.args.vararg, "y")
+
+    def test_func_def(self):
+        s = dedent("""
+            def func(x: int,
+                     *args: str,
+                     z: float = 0,
+                     **kwargs: Any) -> bool:
+                return True
+            """).strip()
+        fdef = ast.parse(s).body[0]
+        self._check_end_pos(fdef, 5, 15)
+        self._check_content(s, fdef.body[0], "return True")
+        self._check_content(s, fdef.args.args[0], "x: int")
+        self._check_content(s, fdef.args.args[0].annotation, "int")
+        self._check_content(s, fdef.args.kwarg, "kwargs: Any")
+        self._check_content(s, fdef.args.kwarg.annotation, "Any")
+
+    def test_call(self):
+        s = "func(x, y=2, **kw)"
+        call = self._parse_value(s)
+        self._check_content(s, call.func, "func")
+        self._check_content(s, call.keywords[0].value, "2")
+        self._check_content(s, call.keywords[1].value, "kw")
+
+    def test_call_noargs(self):
+        s = "x[0]()"
+        call = self._parse_value(s)
+        self._check_content(s, call.func, "x[0]")
+        self._check_end_pos(call, 1, 6)
+
+    def test_class_def(self):
+        s = dedent("""
+            class C(A, B):
+                x: int = 0
+        """).strip()
+        cdef = ast.parse(s).body[0]
+        self._check_end_pos(cdef, 2, 14)
+        self._check_content(s, cdef.bases[1], "B")
+        self._check_content(s, cdef.body[0], "x: int = 0")
+
+    def test_class_kw(self):
+        s = "class S(metaclass=abc.ABCMeta): pass"
+        cdef = ast.parse(s).body[0]
+        self._check_content(s, cdef.keywords[0].value, "abc.ABCMeta")
+
+    def test_multi_line_str(self):
+        s = dedent('''
+            x = """Some multi-line text.
+
+            It goes on starting from same indent."""
+        ''').strip()
+        assign = ast.parse(s).body[0]
+        self._check_end_pos(assign, 3, 40)
+        self._check_end_pos(assign.value, 3, 40)
+
+    def test_continued_str(self):
+        s = dedent("""
+            x = "first part" \\
+            "second part"
+        """).strip()
+        assign = ast.parse(s).body[0]
+        self._check_end_pos(assign, 2, 13)
+        self._check_end_pos(assign.value, 2, 13)
+
+    def test_suites(self):
+        # We intentionally put these into the same string to check
+        # that empty lines are not part of the suite.
+        s = dedent("""
+            while True:
+                pass
+
+            if one():
+                x = None
+            elif other():
+                y = None
+            else:
+                z = None
+
+            for x, y in stuff:
+                assert True
+
+            try:
+                raise RuntimeError
+            except TypeError as e:
+                pass
+
+            pass
+        """).strip()
+        mod = ast.parse(s)
+        while_loop = mod.body[0]
+        if_stmt = mod.body[1]
+        for_loop = mod.body[2]
+        try_stmt = mod.body[3]
+        pass_stmt = mod.body[4]
+
+        self._check_end_pos(while_loop, 2, 8)
+        self._check_end_pos(if_stmt, 9, 12)
+        self._check_end_pos(for_loop, 12, 15)
+        self._check_end_pos(try_stmt, 17, 8)
+        self._check_end_pos(pass_stmt, 19, 4)
+
+        self._check_content(s, while_loop.test, "True")
+        self._check_content(s, if_stmt.body[0], "x = None")
+        self._check_content(s, if_stmt.orelse[0].test, "other()")
+        self._check_content(s, for_loop.target, "x, y")
+        self._check_content(s, try_stmt.body[0], "raise RuntimeError")
+        self._check_content(s, try_stmt.handlers[0].type, "TypeError")
+
+    def test_fstring(self):
+        s = 'x = f"abc {x + y} abc"'
+        fstr = self._parse_value(s)
+        binop = fstr.values[1].value
+        self._check_content(s, binop, "x + y")
+
+    def test_fstring_multi_line(self):
+        s = dedent('''
+            f"""Some multi-line text.
+            {
+            arg_one
+            +
+            arg_two
+            }
+            It goes on..."""
+        ''').strip()
+        fstr = self._parse_value(s)
+        binop = fstr.values[1].value
+        self._check_end_pos(binop, 5, 7)
+        self._check_content(s, binop.left, "arg_one")
+        self._check_content(s, binop.right, "arg_two")
+
+    def test_import_from_multi_line(self):
+        s = dedent("""
+            from x.y.z import (
+                a, b, c as c
+            )
+        """).strip()
+        imp = ast.parse(s).body[0]
+        self._check_end_pos(imp, 3, 1)
+        self._check_end_pos(imp.names[2], 2, 16)
+
+    def test_slices(self):
+        s1 = "f()[1, 2] [0]"
+        s2 = "x[ a.b: c.d]"
+        sm = dedent("""
+            x[ a.b: f () ,
+               g () : c.d
+              ]
+        """).strip()
+        i1, i2, im = map(self._parse_value, (s1, s2, sm))
+        self._check_content(s1, i1.value, "f()[1, 2]")
+        self._check_content(s1, i1.value.slice, "1, 2")
+        self._check_content(s2, i2.slice.lower, "a.b")
+        self._check_content(s2, i2.slice.upper, "c.d")
+        self._check_content(sm, im.slice.elts[0].upper, "f ()")
+        self._check_content(sm, im.slice.elts[1].lower, "g ()")
+        self._check_end_pos(im, 3, 3)
+
+    def test_binop(self):
+        s = dedent("""
+            (1 * 2 + (3 ) +
+                 4
+            )
+        """).strip()
+        binop = self._parse_value(s)
+        self._check_end_pos(binop, 2, 6)
+        self._check_content(s, binop.right, "4")
+        self._check_content(s, binop.left, "1 * 2 + (3 )")
+        self._check_content(s, binop.left.right, "3")
+
+    def test_boolop(self):
+        s = dedent("""
+            if (one_condition and
+                    (other_condition or yet_another_one)):
+                pass
+        """).strip()
+        bop = ast.parse(s).body[0].test
+        self._check_end_pos(bop, 2, 44)
+        self._check_content(s, bop.values[1], "other_condition or yet_another_one")
+
+    def test_tuples(self):
+        s1 = "x = () ;"
+        s2 = "x = 1 , ;"
+        s3 = "x = (1 , 2 ) ;"
+        sm = dedent("""
+            x = (
+                a, b,
+            )
+        """).strip()
+        t1, t2, t3, tm = map(self._parse_value, (s1, s2, s3, sm))
+        self._check_content(s1, t1, "()")
+        self._check_content(s2, t2, "1 ,")
+        self._check_content(s3, t3, "(1 , 2 )")
+        self._check_end_pos(tm, 3, 1)
+
+    def test_attribute_spaces(self):
+        s = "func(x. y .z)"
+        call = self._parse_value(s)
+        self._check_content(s, call, s)
+        self._check_content(s, call.args[0], "x. y .z")
+
+    def test_redundant_parenthesis(self):
+        s = "( ( ( a + b ) ) )"
+        v = ast.parse(s).body[0].value
+        self.assertEqual(type(v).__name__, "BinOp")
+        self._check_content(s, v, "a + b")
+        s2 = "await " + s
+        v = ast.parse(s2).body[0].value.value
+        self.assertEqual(type(v).__name__, "BinOp")
+        self._check_content(s2, v, "a + b")
+
+    def test_trailers_with_redundant_parenthesis(self):
+        tests = (
+            ("( ( ( a ) ) ) ( )", "Call"),
+            ("( ( ( a ) ) ) ( b )", "Call"),
+            ("( ( ( a ) ) ) [ b ]", "Subscript"),
+            ("( ( ( a ) ) ) . b", "Attribute"),
+        )
+        for s, t in tests:
+            with self.subTest(s):
+                v = ast.parse(s).body[0].value
+                self.assertEqual(type(v).__name__, t)
+                self._check_content(s, v, s)
+                s2 = "await " + s
+                v = ast.parse(s2).body[0].value.value
+                self.assertEqual(type(v).__name__, t)
+                self._check_content(s2, v, s)
+
+    def test_displays(self):
+        s1 = "[{}, {1, }, {1, 2,} ]"
+        s2 = "{a: b, f (): g () ,}"
+        c1 = self._parse_value(s1)
+        c2 = self._parse_value(s2)
+        self._check_content(s1, c1.elts[0], "{}")
+        self._check_content(s1, c1.elts[1], "{1, }")
+        self._check_content(s1, c1.elts[2], "{1, 2,}")
+        self._check_content(s2, c2.keys[1], "f ()")
+        self._check_content(s2, c2.values[1], "g ()")
+
+    def test_comprehensions(self):
+        s = dedent("""
+            x = [{x for x, y in stuff
+                  if cond.x} for stuff in things]
+        """).strip()
+        cmp = self._parse_value(s)
+        self._check_end_pos(cmp, 2, 37)
+        self._check_content(s, cmp.generators[0].iter, "things")
+        self._check_content(s, cmp.elt.generators[0].iter, "stuff")
+        self._check_content(s, cmp.elt.generators[0].ifs[0], "cond.x")
+        self._check_content(s, cmp.elt.generators[0].target, "x, y")
+
+    def test_yield_await(self):
+        s = dedent("""
+            async def f():
+                yield x
+                await y
+        """).strip()
+        fdef = ast.parse(s).body[0]
+        self._check_content(s, fdef.body[0].value, "yield x")
+        self._check_content(s, fdef.body[1].value, "await y")
+
+    def test_source_segment_multi(self):
+        s_orig = dedent("""
+            x = (
+                a, b,
+            ) + ()
+        """).strip()
+        s_tuple = dedent("""
+            (
+                a, b,
+            )
+        """).strip()
+        binop = self._parse_value(s_orig)
+        self.assertEqual(ast.get_source_segment(s_orig, binop.left), s_tuple)
+
+    def test_source_segment_padded(self):
+        s_orig = dedent("""
+            class C:
+                def fun(self) -> None:
+                    "ЖЖЖЖЖ"
+        """).strip()
+        s_method = "    def fun(self) -> None:\n" '        "ЖЖЖЖЖ"'
+        cdef = ast.parse(s_orig).body[0]
+        self.assertEqual(
+            ast.get_source_segment(s_orig, cdef.body[0], padded=True), s_method
+        )
+
+    def test_source_segment_endings(self):
+        s = "v = 1\r\nw = 1\nx = 1\n\ry = 1\rz = 1\r\n"
+        v, w, x, y, z = ast.parse(s).body
+        self._check_content(s, v, "v = 1")
+        self._check_content(s, w, "w = 1")
+        self._check_content(s, x, "x = 1")
+        self._check_content(s, y, "y = 1")
+        self._check_content(s, z, "z = 1")
+
+    def test_source_segment_tabs(self):
+        s = dedent("""
+            class C:
+              \t\f  def fun(self) -> None:
+              \t\f      pass
+        """).strip()
+        s_method = "  \t\f  def fun(self) -> None:\n" "  \t\f      pass"
+
+        cdef = ast.parse(s).body[0]
+        self.assertEqual(ast.get_source_segment(s, cdef.body[0], padded=True), s_method)
+
+    def test_source_segment_newlines(self):
+        s = "def f():\n  pass\ndef g():\r  pass\r\ndef h():\r\n  pass\r\n"
+        f, g, h = ast.parse(s).body
+        self._check_content(s, f, "def f():\n  pass")
+        self._check_content(s, g, "def g():\r  pass")
+        self._check_content(s, h, "def h():\r\n  pass")
+
+        s = "def f():\n  a = 1\r  b = 2\r\n  c = 3\n"
+        f = ast.parse(s).body[0]
+        self._check_content(s, f, s.rstrip())
+
+    def test_source_segment_missing_info(self):
+        s = "v = 1\r\nw = 1\nx = 1\n\ry = 1\r\n"
+        v, w, x, y = ast.parse(s).body
+        del v.lineno
+        del w.end_lineno
+        del x.col_offset
+        del y.end_col_offset
+        self.assertIsNone(ast.get_source_segment(s, v))
+        self.assertIsNone(ast.get_source_segment(s, w))
+        self.assertIsNone(ast.get_source_segment(s, x))
+        self.assertIsNone(ast.get_source_segment(s, y))
+
+
+class BaseNodeVisitorCases:
+    # Both `NodeVisitor` and `NodeTranformer` must raise these warnings:
+    def test_old_constant_nodes(self):
+        class Visitor(self.visitor_class):
+            def visit_Num(self, node):
+                log.append((node.lineno, "Num", node.n))
+
+            def visit_Str(self, node):
+                log.append((node.lineno, "Str", node.s))
+
+            def visit_Bytes(self, node):
+                log.append((node.lineno, "Bytes", node.s))
+
+            def visit_NameConstant(self, node):
+                log.append((node.lineno, "NameConstant", node.value))
+
+            def visit_Ellipsis(self, node):
+                log.append((node.lineno, "Ellipsis", ...))
+
+        mod = ast.parse(
+            dedent("""\
+            i = 42
+            f = 4.25
+            c = 4.25j
+            s = 'string'
+            b = b'bytes'
+            t = True
+            n = None
+            e = ...
+            """)
+        )
+        visitor = Visitor()
+        log = []
+        with warnings.catch_warnings(record=True) as wlog:
+            warnings.filterwarnings("always", "", DeprecationWarning)
+            visitor.visit(mod)
+        self.assertEqual(
+            log,
+            [
+                (1, "Num", 42),
+                (2, "Num", 4.25),
+                (3, "Num", 4.25j),
+                (4, "Str", "string"),
+                (5, "Bytes", b"bytes"),
+                (6, "NameConstant", True),
+                (7, "NameConstant", None),
+                (8, "Ellipsis", ...),
+            ],
+        )
+        self.assertEqual(
+            [str(w.message) for w in wlog],
+            [
+                "visit_Num is deprecated; add visit_Constant",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "visit_Num is deprecated; add visit_Constant",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "visit_Num is deprecated; add visit_Constant",
+                "Attribute n is deprecated and will be removed in Python 3.14; use value instead",
+                "visit_Str is deprecated; add visit_Constant",
+                "Attribute s is deprecated and will be removed in Python 3.14; use value instead",
+                "visit_Bytes is deprecated; add visit_Constant",
+                "Attribute s is deprecated and will be removed in Python 3.14; use value instead",
+                "visit_NameConstant is deprecated; add visit_Constant",
+                "visit_NameConstant is deprecated; add visit_Constant",
+                "visit_Ellipsis is deprecated; add visit_Constant",
+            ],
+        )
+
+
+class NodeVisitorTests(BaseNodeVisitorCases, unittest.TestCase):
+    visitor_class = ast.NodeVisitor
+
+
+class NodeTransformerTests(ASTTestMixin, BaseNodeVisitorCases, unittest.TestCase):
+    visitor_class = ast.NodeTransformer
+
+    def assertASTTransformation(self, tranformer_class, initial_code, expected_code):
+        initial_ast = ast.parse(dedent(initial_code))
+        expected_ast = ast.parse(dedent(expected_code))
+
+        tranformer = tranformer_class()
+        result_ast = ast.fix_missing_locations(tranformer.visit(initial_ast))
+
+        self.assertASTEqual(result_ast, expected_ast)
+
+    def test_node_remove_single(self):
+        code = "def func(arg) -> SomeType: ..."
+        expected = "def func(arg): ..."
+
+        # Since `FunctionDef.returns` is defined as a single value, we test
+        # the `if isinstance(old_value, AST):` branch here.
+        class SomeTypeRemover(ast.NodeTransformer):
+            def visit_Name(self, node: ast.Name):
+                self.generic_visit(node)
+                if node.id == "SomeType":
+                    return None
+                return node
+
+        self.assertASTTransformation(SomeTypeRemover, code, expected)
+
+    def test_node_remove_from_list(self):
+        code = """
+        def func(arg):
+            print(arg)
+            yield arg
+        """
+        expected = """
+        def func(arg):
+            print(arg)
+        """
+
+        # Since `FunctionDef.body` is defined as a list, we test
+        # the `if isinstance(old_value, list):` branch here.
+        class YieldRemover(ast.NodeTransformer):
+            def visit_Expr(self, node: ast.Expr):
+                self.generic_visit(node)
+                if isinstance(node.value, ast.Yield):
+                    return None  # Remove `yield` from a function
+                return node
+
+        self.assertASTTransformation(YieldRemover, code, expected)
+
+    def test_node_return_list(self):
+        code = """
+        class DSL(Base, kw1=True): ...
+        """
+        expected = """
+        class DSL(Base, kw1=True, kw2=True, kw3=False): ...
+        """
+
+        class ExtendKeywords(ast.NodeTransformer):
+            def visit_keyword(self, node: ast.keyword):
+                self.generic_visit(node)
+                if node.arg == "kw1":
+                    return [
+                        node,
+                        ast.keyword("kw2", ast.Constant(True)),
+                        ast.keyword("kw3", ast.Constant(False)),
+                    ]
+                return node
+
+        self.assertASTTransformation(ExtendKeywords, code, expected)
+
+    def test_node_mutate(self):
+        code = """
+        def func(arg):
+            print(arg)
+        """
+        expected = """
+        def func(arg):
+            log(arg)
+        """
+
+        class PrintToLog(ast.NodeTransformer):
+            def visit_Call(self, node: ast.Call):
+                self.generic_visit(node)
+                if isinstance(node.func, ast.Name) and node.func.id == "print":
+                    node.func.id = "log"
+                return node
+
+        self.assertASTTransformation(PrintToLog, code, expected)
+
+    def test_node_replace(self):
+        code = """
+        def func(arg):
+            print(arg)
+        """
+        expected = """
+        def func(arg):
+            logger.log(arg, debug=True)
+        """
+
+        class PrintToLog(ast.NodeTransformer):
+            def visit_Call(self, node: ast.Call):
+                self.generic_visit(node)
+                if isinstance(node.func, ast.Name) and node.func.id == "print":
+                    return ast.Call(
+                        func=ast.Attribute(
+                            ast.Name("logger", ctx=ast.Load()),
+                            attr="log",
+                            ctx=ast.Load(),
+                        ),
+                        args=node.args,
+                        keywords=[ast.keyword("debug", ast.Constant(True))],
+                    )
+                return node
+
+        self.assertASTTransformation(PrintToLog, code, expected)
+
+
+class ASTConstructorTests(unittest.TestCase):
+    """Test the autogenerated constructors for AST nodes."""
+
+    def test_FunctionDef(self):
+        args = ast.arguments()
+        self.assertEqual(args.args, [])
+        self.assertEqual(args.posonlyargs, [])
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            r"FunctionDef\.__init__ missing 1 required positional argument: 'name'",
+        ):
+            node = ast.FunctionDef(args=args)
+        self.assertFalse(hasattr(node, "name"))
+        self.assertEqual(node.decorator_list, [])
+        node = ast.FunctionDef(name="foo", args=args)
+        self.assertEqual(node.name, "foo")
+        self.assertEqual(node.decorator_list, [])
+
+    def test_expr_context(self):
+        name = ast.Name("x")
+        self.assertEqual(name.id, "x")
+        self.assertIsInstance(name.ctx, ast.Load)
+
+        name2 = ast.Name("x", ast.Store())
+        self.assertEqual(name2.id, "x")
+        self.assertIsInstance(name2.ctx, ast.Store)
+
+        name3 = ast.Name("x", ctx=ast.Del())
+        self.assertEqual(name3.id, "x")
+        self.assertIsInstance(name3.ctx, ast.Del)
+
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            r"Name\.__init__ missing 1 required positional argument: 'id'",
+        ):
+            name3 = ast.Name()
+
+    def test_custom_subclass_with_no_fields(self):
+        class NoInit(ast.AST):
+            pass
+
+        obj = NoInit()
+        self.assertIsInstance(obj, NoInit)
+        self.assertEqual(obj.__dict__, {})
+
+    def test_fields_but_no_field_types(self):
+        class Fields(ast.AST):
+            _fields = ("a",)
+
+        obj = Fields()
+        with self.assertRaises(AttributeError):
+            obj.a
+        obj = Fields(a=1)
+        self.assertEqual(obj.a, 1)
+
+    def test_fields_and_types(self):
+        class FieldsAndTypes(ast.AST):
+            _fields = ("a",)
+            _field_types = {"a": int | None}
+            a: int | None = None
+
+        obj = FieldsAndTypes()
+        self.assertIs(obj.a, None)
+        obj = FieldsAndTypes(a=1)
+        self.assertEqual(obj.a, 1)
+
+    def test_custom_attributes(self):
+        class MyAttrs(ast.AST):
+            _attributes = ("a", "b")
+
+        obj = MyAttrs(a=1, b=2)
+        self.assertEqual(obj.a, 1)
+        self.assertEqual(obj.b, 2)
+
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            r"MyAttrs.__init__ got an unexpected keyword argument 'c'.",
+        ):
+            obj = MyAttrs(c=3)
+
+    def test_fields_and_types_no_default(self):
+        class FieldsAndTypesNoDefault(ast.AST):
+            _fields = ("a",)
+            _field_types = {"a": int}
+
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            r"FieldsAndTypesNoDefault\.__init__ missing 1 required positional argument: 'a'\.",
+        ):
+            obj = FieldsAndTypesNoDefault()
+        with self.assertRaises(AttributeError):
+            obj.a
+        obj = FieldsAndTypesNoDefault(a=1)
+        self.assertEqual(obj.a, 1)
+
+    def test_incomplete_field_types(self):
+        class MoreFieldsThanTypes(ast.AST):
+            _fields = ("a", "b")
+            _field_types = {"a": int | None}
+            a: int | None = None
+            b: int | None = None
+
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            r"Field 'b' is missing from MoreFieldsThanTypes\._field_types",
+        ):
+            obj = MoreFieldsThanTypes()
+        self.assertIs(obj.a, None)
+        self.assertIs(obj.b, None)
+
+        obj = MoreFieldsThanTypes(a=1, b=2)
+        self.assertEqual(obj.a, 1)
+        self.assertEqual(obj.b, 2)
+
+    def test_complete_field_types(self):
+        class _AllFieldTypes(ast.AST):
+            _fields = ("a", "b")
+            _field_types = {"a": int | None, "b": list[str]}
+            # This must be set explicitly
+            a: int | None = None
+            # This will add an implicit empty list default
+            b: list[str]
+
+        obj = _AllFieldTypes()
+        self.assertIs(obj.a, None)
+        self.assertEqual(obj.b, [])
+
+
+@support.cpython_only
+class ModuleStateTests(unittest.TestCase):
+    # bpo-41194, bpo-41261, bpo-41631: The _ast module uses a global state.
+
+    def check_ast_module(self):
+        # Check that the _ast module still works as expected
+        code = "x + 1"
+        filename = "<string>"
+        mode = "eval"
+
+        # Create _ast.AST subclasses instances
+        ast_tree = compile(code, filename, mode, flags=ast.PyCF_ONLY_AST)
+
+        # Call PyAST_Check()
+        code = compile(ast_tree, filename, mode)
+        self.assertIsInstance(code, types.CodeType)
+
+    def test_reload_module(self):
+        # bpo-41194: Importing the _ast module twice must not crash.
+        with support.swap_item(sys.modules, "_ast", None):
+            del sys.modules["_ast"]
+            import _ast as ast1
+
+            del sys.modules["_ast"]
+            import _ast as ast2
+
+            self.check_ast_module()
+
+        # Unloading the two _ast module instances must not crash.
+        del ast1
+        del ast2
+        support.gc_collect()
+
+        self.check_ast_module()
+
+    def test_sys_modules(self):
+        # bpo-41631: Test reproducing a Mercurial crash when PyAST_Check()
+        # imported the _ast module internally.
+        lazy_mod = object()
+
+        def my_import(name, *args, **kw):
+            sys.modules[name] = lazy_mod
+            return lazy_mod
+
+        with support.swap_item(sys.modules, "_ast", None):
+            del sys.modules["_ast"]
+
+            with support.swap_attr(builtins, "__import__", my_import):
+                # Test that compile() does not import the _ast module
+                self.check_ast_module()
+                self.assertNotIn("_ast", sys.modules)
+
+                # Sanity check of the test itself
+                import _ast
+
+                self.assertIs(_ast, lazy_mod)
+
+    def test_subinterpreter(self):
+        # bpo-41631: Importing and using the _ast module in a subinterpreter
+        # must not crash.
+        code = dedent("""
+            import _ast
+            import ast
+            import gc
+            import sys
+            import types
+
+            # Create _ast.AST subclasses instances and call PyAST_Check()
+            ast_tree = compile('x+1', '<string>', 'eval',
+                               flags=ast.PyCF_ONLY_AST)
+            code = compile(ast_tree, 'string', 'eval')
+            if not isinstance(code, types.CodeType):
+                raise AssertionError
+
+            # Unloading the _ast module must not crash.
+            del ast, _ast
+            del sys.modules['ast'], sys.modules['_ast']
+            gc.collect()
+        """)
+        res = support.run_in_subinterp(code)
+        self.assertEqual(res, 0)
+
+
+class ASTMainTests(unittest.TestCase):
+    # Tests `ast.main()` function.
+
+    def test_cli_file_input(self):
+        code = "print(1, 2, 3)"
+        expected = ast.dump(ast.parse(code), indent=3)
+
+        with os_helper.temp_dir() as tmp_dir:
+            filename = os.path.join(tmp_dir, "test_module.py")
+            with open(filename, "w", encoding="utf-8") as f:
+                f.write(code)
+            res, _ = script_helper.run_python_until_end("-m", "ast", filename)
+
+        self.assertEqual(res.err, b"")
+        self.assertEqual(expected.splitlines(), res.out.decode("utf8").splitlines())
+        self.assertEqual(res.rc, 0)
+
+def compare(left, right):
+    return ast.dump(left) == ast.dump(right)
+
+class ASTOptimiziationTests(unittest.TestCase):
+    binop = {
+        "+": ast.Add(),
+        "-": ast.Sub(),
+        "*": ast.Mult(),
+        "/": ast.Div(),
+        "%": ast.Mod(),
+        "<<": ast.LShift(),
+        ">>": ast.RShift(),
+        "|": ast.BitOr(),
+        "^": ast.BitXor(),
+        "&": ast.BitAnd(),
+        "//": ast.FloorDiv(),
+        "**": ast.Pow(),
+    }
+
+    unaryop = {
+        "~": ast.Invert(),
+        "+": ast.UAdd(),
+        "-": ast.USub(),
+    }
+
+    def wrap_expr(self, expr):
+        return ast.Module(body=[ast.Expr(value=expr)])
+
+    def wrap_statement(self, statement):
+        return ast.Module(body=[statement])
+
+    def assert_ast(self, code, non_optimized_target, optimized_target):
+
+        non_optimized_tree = ast.parse(code, optimize=-1)
+        optimized_tree = ast.parse(code, optimize=1)
+
+        # Is a non-optimized tree equal to a non-optimized target?
+        self.assertTrue(
+            compare(non_optimized_tree, non_optimized_target),
+            f"{ast.dump(non_optimized_target)} must equal "
+            f"{ast.dump(non_optimized_tree)}",
+        )
+
+        # Is a optimized tree equal to a non-optimized target?
+        self.assertFalse(
+            compare(optimized_tree, non_optimized_target),
+            f"{ast.dump(non_optimized_target)} must not equal "
+            f"{ast.dump(non_optimized_tree)}"
+        )
+
+        # Is a optimized tree is equal to an optimized target?
+        self.assertTrue(
+            compare(optimized_tree,  optimized_target),
+            f"{ast.dump(optimized_target)} must equal "
+            f"{ast.dump(optimized_tree)}",
+        )
+
+    def create_binop(self, operand, left=ast.Constant(1), right=ast.Constant(1)):
+            return ast.BinOp(left=left, op=self.binop[operand], right=right)
+
+    def test_folding_binop(self):
+        code = "1 %s 1"
+        operators = self.binop.keys()
+
+        for op in operators:
+            result_code = code % op
+            non_optimized_target = self.wrap_expr(self.create_binop(op))
+            optimized_target = self.wrap_expr(ast.Constant(value=eval(result_code)))
+
+            with self.subTest(
+                result_code=result_code,
+                non_optimized_target=non_optimized_target,
+                optimized_target=optimized_target
+            ):
+                self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+        # Multiplication of constant tuples must be folded
+        code = "(1,) * 3"
+        non_optimized_target = self.wrap_expr(self.create_binop("*", ast.Tuple(elts=[ast.Constant(value=1)]), ast.Constant(value=3)))
+        optimized_target = self.wrap_expr(ast.Constant(eval(code)))
+
+        self.assert_ast(code, non_optimized_target, optimized_target)
+
+    def test_folding_unaryop(self):
+        code = "%s1"
+        operators = self.unaryop.keys()
+
+        def create_unaryop(operand):
+            return ast.UnaryOp(op=self.unaryop[operand], operand=ast.Constant(1))
+
+        for op in operators:
+            result_code = code % op
+            non_optimized_target = self.wrap_expr(create_unaryop(op))
+            optimized_target = self.wrap_expr(ast.Constant(eval(result_code)))
+
+            with self.subTest(
+                result_code=result_code,
+                non_optimized_target=non_optimized_target,
+                optimized_target=optimized_target
+            ):
+                self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+    def test_folding_not(self):
+        code = "not (1 %s (1,))"
+        operators = {
+            "in": ast.In(),
+            "is": ast.Is(),
+        }
+        opt_operators = {
+            "is": ast.IsNot(),
+            "in": ast.NotIn(),
+        }
+
+        def create_notop(operand):
+            return ast.UnaryOp(op=ast.Not(), operand=ast.Compare(
+                left=ast.Constant(value=1),
+                ops=[operators[operand]],
+                comparators=[ast.Tuple(elts=[ast.Constant(value=1)])]
+            ))
+
+        for op in operators.keys():
+            result_code = code % op
+            non_optimized_target = self.wrap_expr(create_notop(op))
+            optimized_target = self.wrap_expr(
+                ast.Compare(left=ast.Constant(1), ops=[opt_operators[op]], comparators=[ast.Constant(value=(1,))])
+            )
+
+            with self.subTest(
+                result_code=result_code,
+                non_optimized_target=non_optimized_target,
+                optimized_target=optimized_target
+            ):
+                self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+    def test_folding_format(self):
+        code = "'%s' % (a,)"
+
+        non_optimized_target = self.wrap_expr(
+            ast.BinOp(
+                left=ast.Constant(value="%s"),
+                op=ast.Mod(),
+                right=ast.Tuple(elts=[ast.Name(id='a')]))
+        )
+        optimized_target = self.wrap_expr(
+            ast.JoinedStr(
+                values=[
+                    ast.FormattedValue(value=ast.Name(id='a'), conversion=115)
+                ]
+            )
+        )
+
+        self.assert_ast(code, non_optimized_target, optimized_target)
+
+
+    def test_folding_tuple(self):
+        code = "(1,)"
+
+        non_optimized_target = self.wrap_expr(ast.Tuple(elts=[ast.Constant(1)]))
+        optimized_target = self.wrap_expr(ast.Constant(value=(1,)))
+
+        self.assert_ast(code, non_optimized_target, optimized_target)
+
+    def test_folding_comparator(self):
+        code = "1 %s %s1%s"
+        operators = [("in", ast.In()), ("not in", ast.NotIn())]
+        braces = [
+            ("[", "]", ast.List, (1,)),
+            ("{", "}", ast.Set, frozenset({1})),
+        ]
+        for left, right, non_optimized_comparator, optimized_comparator in braces:
+            for op, node in operators:
+                non_optimized_target = self.wrap_expr(ast.Compare(
+                    left=ast.Constant(1), ops=[node],
+                    comparators=[non_optimized_comparator(elts=[ast.Constant(1)])]
+                ))
+                optimized_target = self.wrap_expr(ast.Compare(
+                    left=ast.Constant(1), ops=[node],
+                    comparators=[ast.Constant(value=optimized_comparator)]
+                ))
+                self.assert_ast(code % (op, left, right), non_optimized_target, optimized_target)
+
+    def test_folding_iter(self):
+        code = "for _ in %s1%s: pass"
+        braces = [
+            ("[", "]", ast.List, (1,)),
+            ("{", "}", ast.Set, frozenset({1})),
+        ]
+
+        for left, right, ast_cls, optimized_iter in braces:
+            non_optimized_target = self.wrap_statement(ast.For(
+                target=ast.Name(id="_", ctx=ast.Store()),
+                iter=ast_cls(elts=[ast.Constant(1)]),
+                body=[ast.Pass()]
+            ))
+            optimized_target = self.wrap_statement(ast.For(
+                target=ast.Name(id="_", ctx=ast.Store()),
+                iter=ast.Constant(value=optimized_iter),
+                body=[ast.Pass()]
+            ))
+
+            self.assert_ast(code % (left, right), non_optimized_target, optimized_target)
+
+    def test_folding_subscript(self):
+        code = "(1,)[0]"
+
+        non_optimized_target = self.wrap_expr(
+            ast.Subscript(value=ast.Tuple(elts=[ast.Constant(value=1)]), slice=ast.Constant(value=0))
+        )
+        optimized_target = self.wrap_expr(ast.Constant(value=1))
+
+        self.assert_ast(code, non_optimized_target, optimized_target)
+
+    def test_folding_type_param_in_function_def(self):
+        code = "def foo[%s = 1 + 1](): pass"
+
+        unoptimized_binop = self.create_binop("+")
+        unoptimized_type_params = [
+            ("T", "T", ast.TypeVar),
+            ("**P", "P", ast.ParamSpec),
+            ("*Ts", "Ts", ast.TypeVarTuple),
+        ]
+
+        for type, name, type_param in unoptimized_type_params:
+            result_code = code % type
+            optimized_target = self.wrap_statement(
+                ast.FunctionDef(
+                    name='foo',
+                    args=ast.arguments(),
+                    body=[ast.Pass()],
+                    type_params=[type_param(name=name, default_value=ast.Constant(2))]
+                )
+            )
+            non_optimized_target = self.wrap_statement(
+                ast.FunctionDef(
+                    name='foo',
+                    args=ast.arguments(),
+                    body=[ast.Pass()],
+                    type_params=[type_param(name=name, default_value=unoptimized_binop)]
+                )
+            )
+            self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+    def test_folding_type_param_in_class_def(self):
+        code = "class foo[%s = 1 + 1]: pass"
+
+        unoptimized_binop = self.create_binop("+")
+        unoptimized_type_params = [
+            ("T", "T", ast.TypeVar),
+            ("**P", "P", ast.ParamSpec),
+            ("*Ts", "Ts", ast.TypeVarTuple),
+        ]
+
+        for type, name, type_param in unoptimized_type_params:
+            result_code = code % type
+            optimized_target = self.wrap_statement(
+                ast.ClassDef(
+                    name='foo',
+                    body=[ast.Pass()],
+                    type_params=[type_param(name=name, default_value=ast.Constant(2))]
+                )
+            )
+            non_optimized_target = self.wrap_statement(
+                ast.ClassDef(
+                    name='foo',
+                    body=[ast.Pass()],
+                    type_params=[type_param(name=name, default_value=unoptimized_binop)]
+                )
+            )
+            self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+    def test_folding_type_param_in_type_alias(self):
+        code = "type foo[%s = 1 + 1] = 1"
+
+        unoptimized_binop = self.create_binop("+")
+        unoptimized_type_params = [
+            ("T", "T", ast.TypeVar),
+            ("**P", "P", ast.ParamSpec),
+            ("*Ts", "Ts", ast.TypeVarTuple),
+        ]
+
+        for type, name, type_param in unoptimized_type_params:
+            result_code = code % type
+            optimized_target = self.wrap_statement(
+                ast.TypeAlias(
+                    name=ast.Name(id='foo', ctx=ast.Store()),
+                    type_params=[type_param(name=name, default_value=ast.Constant(2))],
+                    value=ast.Constant(value=1),
+                )
+            )
+            non_optimized_target = self.wrap_statement(
+                ast.TypeAlias(
+                    name=ast.Name(id='foo', ctx=ast.Store()),
+                    type_params=[type_param(name=name, default_value=unoptimized_binop)],
+                    value=ast.Constant(value=1),
+                )
+            )
+            self.assert_ast(result_code, non_optimized_target, optimized_target)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_ast/utils.py b/Lib/test/test_ast/utils.py
new file mode 100644
index 00000000000000..145e89ee94e935
--- /dev/null
+++ b/Lib/test/test_ast/utils.py
@@ -0,0 +1,15 @@
+def to_tuple(t):
+    if t is None or isinstance(t, (str, int, complex, float, bytes)) or t is Ellipsis:
+        return t
+    elif isinstance(t, list):
+        return [to_tuple(e) for e in t]
+    result = [t.__class__.__name__]
+    if hasattr(t, 'lineno') and hasattr(t, 'col_offset'):
+        result.append((t.lineno, t.col_offset))
+        if hasattr(t, 'end_lineno') and hasattr(t, 'end_col_offset'):
+            result[-1] += (t.end_lineno, t.end_col_offset)
+    if t._fields is None:
+        return tuple(result)
+    for f in t._fields:
+        result.append(to_tuple(getattr(t, f)))
+    return tuple(result)
diff --git a/Lib/test/test_asyncgen.py b/Lib/test/test_asyncgen.py
index 4f2278bb263681..16164492b25690 100644
--- a/Lib/test/test_asyncgen.py
+++ b/Lib/test/test_asyncgen.py
@@ -1152,6 +1152,23 @@ async def run():
 
         self.loop.run_until_complete(run())
 
+    def test_async_gen_asyncio_anext_tuple_no_exceptions(self):
+        # StopAsyncIteration exceptions should be cleared.
+        # See: https://github.com/python/cpython/issues/128078.
+
+        async def foo():
+            if False:
+                yield (1, 2)
+
+        async def run():
+            it = foo().__aiter__()
+            with self.assertRaises(StopAsyncIteration):
+                await it.__anext__()
+            res = await anext(it, ('a', 'b'))
+            self.assertEqual(res, ('a', 'b'))
+
+        self.loop.run_until_complete(run())
+
     def test_async_gen_asyncio_anext_stopiteration(self):
         async def foo():
             try:
diff --git a/Lib/test/test_asyncio/test_eager_task_factory.py b/Lib/test/test_asyncio/test_eager_task_factory.py
index 0f8212dbec47be..0e2b189f761521 100644
--- a/Lib/test/test_asyncio/test_eager_task_factory.py
+++ b/Lib/test/test_asyncio/test_eager_task_factory.py
@@ -213,6 +213,56 @@ async def run():
 
         self.run_coro(run())
 
+    def test_staggered_race_with_eager_tasks(self):
+        # See https://github.com/python/cpython/issues/124309
+
+        async def fail():
+            await asyncio.sleep(0)
+            raise ValueError("no good")
+
+        async def blocked():
+            fut = asyncio.Future()
+            await fut
+
+        async def run():
+            winner, index, excs = await asyncio.staggered.staggered_race(
+                [
+                    lambda: blocked(),
+                    lambda: asyncio.sleep(1, result="sleep1"),
+                    lambda: fail()
+                ],
+                delay=0.25
+            )
+            self.assertEqual(winner, 'sleep1')
+            self.assertEqual(index, 1)
+            self.assertIsNone(excs[index])
+            self.assertIsInstance(excs[0], asyncio.CancelledError)
+            self.assertIsInstance(excs[2], ValueError)
+
+        self.run_coro(run())
+
+    def test_staggered_race_with_eager_tasks_no_delay(self):
+        # See https://github.com/python/cpython/issues/124309
+        async def fail():
+            raise ValueError("no good")
+
+        async def run():
+            winner, index, excs = await asyncio.staggered.staggered_race(
+                [
+                    lambda: fail(),
+                    lambda: asyncio.sleep(1, result="sleep1"),
+                    lambda: asyncio.sleep(0, result="sleep0"),
+                ],
+                delay=None
+            )
+            self.assertEqual(winner, 'sleep1')
+            self.assertEqual(index, 1)
+            self.assertIsNone(excs[index])
+            self.assertIsInstance(excs[0], ValueError)
+            self.assertEqual(len(excs), 2)
+
+        self.run_coro(run())
+
 
 class PyEagerTaskFactoryLoopTests(EagerTaskFactoryLoopTests, test_utils.TestCase):
     Task = tasks._PyTask
@@ -241,6 +291,18 @@ class DummyLoop:
         _, out, err = assert_python_ok("-c", code)
         self.assertFalse(err)
 
+    def test_issue122332(self):
+       async def coro():
+           pass
+
+       async def run():
+           task = self.loop.create_task(coro())
+           await task
+           self.assertIsNone(task.get_coro())
+
+       self.run_coro(run())
+
+
 class AsyncTaskCounter:
     def __init__(self, loop, *, task_class, eager):
         self.suspense_count = 0
diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index 88c85a36b5d448..c92bc81618c989 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -2364,7 +2364,7 @@ def test_handle_repr(self):
         h = asyncio.Handle(cb, (), self.loop)
 
         cb_regex = r'<function HandleTests.test_handle_repr .*>'
-        cb_regex = fr'functools.partialmethod\({cb_regex}, , \)\(\)'
+        cb_regex = fr'functools.partialmethod\({cb_regex}\)\(\)'
         regex = fr'^<Handle {cb_regex} at {re.escape(filename)}:{lineno}>$'
         self.assertRegex(repr(h), regex)
 
diff --git a/Lib/test/test_asyncio/test_futures.py b/Lib/test/test_asyncio/test_futures.py
index 458b70451a306a..ec3029983b73e8 100644
--- a/Lib/test/test_asyncio/test_futures.py
+++ b/Lib/test/test_asyncio/test_futures.py
@@ -32,6 +32,25 @@ def last_cb():
     pass
 
 
+class ReachableCode(Exception):
+    """Exception to raise to indicate that some code was reached.
+
+    Use this exception if using mocks is not a good alternative.
+    """
+
+
+class SimpleEvilEventLoop(asyncio.base_events.BaseEventLoop):
+    """Base class for UAF and other evil stuff requiring an evil event loop."""
+
+    def get_debug(self):  # to suppress tracebacks
+        return False
+
+    def __del__(self):
+        # Automatically close the evil event loop to avoid warnings.
+        if not self.is_closed() and not self.is_running():
+            self.close()
+
+
 class DuckFuture:
     # Class that does not inherit from Future but aims to be duck-type
     # compatible with it.
@@ -659,6 +678,28 @@ def __del__(self):
             fut = self._new_future(loop=self.loop)
             fut.set_result(Evil())
 
+    def test_future_cancelled_result_refcycles(self):
+        f = self._new_future(loop=self.loop)
+        f.cancel()
+        exc = None
+        try:
+            f.result()
+        except asyncio.CancelledError as e:
+            exc = e
+        self.assertIsNotNone(exc)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+    def test_future_cancelled_exception_refcycles(self):
+        f = self._new_future(loop=self.loop)
+        f.cancel()
+        exc = None
+        try:
+            f.exception()
+        except asyncio.CancelledError as e:
+            exc = e
+        self.assertIsNotNone(exc)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
 
 @unittest.skipUnless(hasattr(futures, '_CFuture'),
                      'requires the C _asyncio module')
@@ -675,6 +716,32 @@ def test_future_del_segfault(self):
         with self.assertRaises(AttributeError):
             del fut._log_traceback
 
+    def test_future_iter_get_referents_segfault(self):
+        # See https://github.com/python/cpython/issues/122695
+        import _asyncio
+        it = iter(self._new_future(loop=self.loop))
+        del it
+        evil = gc.get_referents(_asyncio)
+        gc.collect()
+
+    def test_callbacks_copy(self):
+        # See https://github.com/python/cpython/issues/125789
+        # In C implementation, the `_callbacks` attribute
+        # always returns a new list to avoid mutations of internal state
+
+        fut = self._new_future(loop=self.loop)
+        f1 = lambda _: 1
+        f2 = lambda _: 2
+        fut.add_done_callback(f1)
+        fut.add_done_callback(f2)
+        callbacks = fut._callbacks
+        self.assertIsNot(callbacks, fut._callbacks)
+        fut.remove_done_callback(f1)
+        callbacks = fut._callbacks
+        self.assertIsNot(callbacks, fut._callbacks)
+        fut.remove_done_callback(f2)
+        self.assertIsNone(fut._callbacks)
+
 
 @unittest.skipUnless(hasattr(futures, '_CFuture'),
                      'requires the C _asyncio module')
@@ -907,6 +974,107 @@ def __eq__(self, other):
 
         fut.remove_done_callback(evil())
 
+    def test_evil_call_soon_list_mutation(self):
+        # see: https://github.com/python/cpython/issues/125969
+        called_on_fut_callback0 = False
+
+        pad = lambda: ...
+
+        def evil_call_soon(*args, **kwargs):
+            nonlocal called_on_fut_callback0
+            if called_on_fut_callback0:
+                # Called when handling fut->fut_callbacks[0]
+                # and mutates the length fut->fut_callbacks.
+                fut.remove_done_callback(int)
+                fut.remove_done_callback(pad)
+            else:
+                called_on_fut_callback0 = True
+
+        fake_event_loop = SimpleEvilEventLoop()
+        fake_event_loop.call_soon = evil_call_soon
+
+        with mock.patch.object(self, 'loop', fake_event_loop):
+            fut = self._new_future()
+            self.assertIs(fut.get_loop(), fake_event_loop)
+
+            fut.add_done_callback(str)  # sets fut->fut_callback0
+            fut.add_done_callback(int)  # sets fut->fut_callbacks[0]
+            fut.add_done_callback(pad)  # sets fut->fut_callbacks[1]
+            fut.add_done_callback(pad)  # sets fut->fut_callbacks[2]
+            fut.set_result("boom")
+
+            # When there are no more callbacks, the Python implementation
+            # returns an empty list but the C implementation returns None.
+            self.assertIn(fut._callbacks, (None, []))
+
+    def test_use_after_free_on_fut_callback_0_with_evil__eq__(self):
+        # Special thanks to Nico-Posada for the original PoC.
+        # See https://github.com/python/cpython/issues/125966.
+
+        fut = self._new_future()
+
+        class cb_pad:
+            def __eq__(self, other):
+                return True
+
+        class evil(cb_pad):
+            def __eq__(self, other):
+                fut.remove_done_callback(None)
+                return NotImplemented
+
+        fut.add_done_callback(cb_pad())
+        fut.remove_done_callback(evil())
+
+    def test_use_after_free_on_fut_callback_0_with_evil__getattribute__(self):
+        # see: https://github.com/python/cpython/issues/125984
+
+        class EvilEventLoop(SimpleEvilEventLoop):
+            def call_soon(self, *args, **kwargs):
+                super().call_soon(*args, **kwargs)
+                raise ReachableCode
+
+            def __getattribute__(self, name):
+                nonlocal fut_callback_0
+                if name == 'call_soon':
+                    fut.remove_done_callback(fut_callback_0)
+                    del fut_callback_0
+                return object.__getattribute__(self, name)
+
+        evil_loop = EvilEventLoop()
+        with mock.patch.object(self, 'loop', evil_loop):
+            fut = self._new_future()
+            self.assertIs(fut.get_loop(), evil_loop)
+
+            fut_callback_0 = lambda: ...
+            fut.add_done_callback(fut_callback_0)
+            self.assertRaises(ReachableCode, fut.set_result, "boom")
+
+    def test_use_after_free_on_fut_context_0_with_evil__getattribute__(self):
+        # see: https://github.com/python/cpython/issues/125984
+
+        class EvilEventLoop(SimpleEvilEventLoop):
+            def call_soon(self, *args, **kwargs):
+                super().call_soon(*args, **kwargs)
+                raise ReachableCode
+
+            def __getattribute__(self, name):
+                if name == 'call_soon':
+                    # resets the future's event loop
+                    fut.__init__(loop=SimpleEvilEventLoop())
+                return object.__getattribute__(self, name)
+
+        evil_loop = EvilEventLoop()
+        with mock.patch.object(self, 'loop', evil_loop):
+            fut = self._new_future()
+            self.assertIs(fut.get_loop(), evil_loop)
+
+            fut_callback_0 = mock.Mock()
+            fut_context_0 = mock.Mock()
+            fut.add_done_callback(fut_callback_0, context=fut_context_0)
+            del fut_context_0
+            del fut_callback_0
+            self.assertRaises(ReachableCode, fut.set_result, "boom")
+
 
 @unittest.skipUnless(hasattr(futures, '_CFuture'),
                      'requires the C _asyncio module')
diff --git a/Lib/test/test_asyncio/test_proactor_events.py b/Lib/test/test_asyncio/test_proactor_events.py
index fcaa2f6ade2b76..4b3d551dd7b3a2 100644
--- a/Lib/test/test_asyncio/test_proactor_events.py
+++ b/Lib/test/test_asyncio/test_proactor_events.py
@@ -1018,9 +1018,9 @@ def setUp(self):
         self.addCleanup(self.file.close)
         super().setUp()
 
-    def make_socket(self, cleanup=True):
+    def make_socket(self, cleanup=True, blocking=False):
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        sock.setblocking(False)
+        sock.setblocking(blocking)
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 1024)
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 1024)
         if cleanup:
@@ -1082,6 +1082,11 @@ def test_sock_sendfile_not_regular_file(self):
                                                           0, None))
         self.assertEqual(self.file.tell(), 0)
 
+    def test_blocking_socket(self):
+        self.loop.set_debug(True)
+        sock = self.make_socket(blocking=True)
+        with self.assertRaisesRegex(ValueError, "must be non-blocking"):
+            self.run_loop(self.loop.sock_sendfile(sock, self.file))
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
index aaeda33dd0c677..efca30f37414f9 100644
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -805,6 +805,18 @@ def test_writelines_send_partial(self):
         self.assertTrue(self.sock.send.called)
         self.assertTrue(self.loop.writers)
 
+    def test_writelines_pauses_protocol(self):
+        data = memoryview(b'data')
+        self.sock.send.return_value = 2
+        self.sock.send.fileno.return_value = 7
+
+        transport = self.socket_transport()
+        transport._high_water = 1
+        transport.writelines([data])
+        self.assertTrue(self.protocol.pause_writing.called)
+        self.assertTrue(self.sock.send.called)
+        self.assertTrue(self.loop.writers)
+
     @unittest.skipUnless(selector_events._HAS_SENDMSG, 'no sendmsg')
     def test_write_sendmsg_full(self):
         data = memoryview(b'data')
diff --git a/Lib/test/test_asyncio/test_sendfile.py b/Lib/test/test_asyncio/test_sendfile.py
index d33ff197bbfa1d..2509d4382cdebd 100644
--- a/Lib/test/test_asyncio/test_sendfile.py
+++ b/Lib/test/test_asyncio/test_sendfile.py
@@ -93,13 +93,10 @@ async def wait_closed(self):
 
 class SendfileBase:
 
-    # 256 KiB plus small unaligned to buffer chunk
-    # Newer versions of Windows seems to have increased its internal
-    # buffer and tries to send as much of the data as it can as it
-    # has some form of buffering for this which is less than 256KiB
-    # on newer server versions and Windows 11.
-    # So DATA should be larger than 256 KiB to make this test reliable.
-    DATA = b"x" * (1024 * 256 + 1)
+    # Linux >= 6.10 seems buffering up to 17 pages of data.
+    # So DATA should be large enough to make this test reliable even with a
+    # 64 KiB page configuration.
+    DATA = b"x" * (1024 * 17 * 64 + 1)
     # Reduce socket buffer size to test on relative small data sets.
     BUF_SIZE = 4 * 1024   # 4 KiB
 
diff --git a/Lib/test/test_asyncio/test_server.py b/Lib/test/test_asyncio/test_server.py
index 4ca8a166a0f1a1..60a40cc8349fed 100644
--- a/Lib/test/test_asyncio/test_server.py
+++ b/Lib/test/test_asyncio/test_server.py
@@ -227,7 +227,7 @@ async def serve(rd, wr):
 
         (s_rd, s_wr) = await fut
 
-        # Limit the socket buffers so we can reliably overfill them
+        # Limit the socket buffers so we can more reliably overfill them
         s_sock = s_wr.get_extra_info('socket')
         s_sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 65536)
         c_sock = c_wr.get_extra_info('socket')
@@ -242,10 +242,18 @@ async def serve(rd, wr):
             await asyncio.sleep(0)
 
         # Get the writer in a waiting state by sending data until the
-        # socket buffers are full on both server and client sockets and
-        # the kernel stops accepting more data
-        s_wr.write(b'a' * c_sock.getsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF))
-        s_wr.write(b'a' * s_sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF))
+        # kernel stops accepting more data in the send buffer.
+        # gh-122136: getsockopt() does not reliably report the buffer size
+        # available for message content.
+        # We loop until we start filling up the asyncio buffer.
+        # To avoid an infinite loop we cap at 10 times the expected value
+        c_bufsize = c_sock.getsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF)
+        s_bufsize = s_sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF)
+        for i in range(10):
+            s_wr.write(b'a' * c_bufsize)
+            s_wr.write(b'a' * s_bufsize)
+            if s_wr.transport.get_write_buffer_size() > 0:
+                break
         self.assertNotEqual(s_wr.transport.get_write_buffer_size(), 0)
 
         task = asyncio.create_task(srv.wait_closed())
diff --git a/Lib/test/test_asyncio/test_sslproto.py b/Lib/test/test_asyncio/test_sslproto.py
index f5f0afeab51c9e..761904c5146b6a 100644
--- a/Lib/test/test_asyncio/test_sslproto.py
+++ b/Lib/test/test_asyncio/test_sslproto.py
@@ -109,6 +109,54 @@ def test_connection_lost(self):
         test_utils.run_briefly(self.loop)
         self.assertIsInstance(waiter.exception(), ConnectionAbortedError)
 
+    def test_connection_lost_when_busy(self):
+        # gh-118950: SSLProtocol.connection_lost not being called when OSError
+        # is thrown on asyncio.write.
+        sock = mock.Mock()
+        sock.fileno = mock.Mock(return_value=12345)
+        sock.send = mock.Mock(side_effect=BrokenPipeError)
+
+        # construct StreamWriter chain that contains loop dependant logic this emulates
+        # what _make_ssl_transport() does in BaseSelectorEventLoop
+        reader = asyncio.StreamReader(limit=2 ** 16, loop=self.loop)
+        protocol = asyncio.StreamReaderProtocol(reader, loop=self.loop)
+        ssl_proto = self.ssl_protocol(proto=protocol)
+
+        # emulate reading decompressed data
+        sslobj = mock.Mock()
+        sslobj.read.side_effect = ssl.SSLWantReadError
+        sslobj.write.side_effect = ssl.SSLWantReadError
+        ssl_proto._sslobj = sslobj
+
+        # emulate outgoing data
+        data = b'An interesting message'
+
+        outgoing = mock.Mock()
+        outgoing.read = mock.Mock(return_value=data)
+        outgoing.pending = len(data)
+        ssl_proto._outgoing = outgoing
+
+        # use correct socket transport to initialize the SSLProtocol
+        self.loop._make_socket_transport(sock, ssl_proto)
+
+        transport = ssl_proto._app_transport
+        writer = asyncio.StreamWriter(transport, protocol, reader, self.loop)
+
+        async def main():
+            # writes data to transport
+            async def write():
+                writer.write(data)
+                await writer.drain()
+
+            # try to write for the first time
+            await write()
+            # try to write for the second time, this raises as the connection_lost
+            # callback should be done with error
+            with self.assertRaises(ConnectionResetError):
+                await write()
+
+        self.loop.run_until_complete(main())
+
     def test_close_during_handshake(self):
         # bpo-29743 Closing transport during handshake process leaks socket
         waiter = self.loop.create_future()
diff --git a/Lib/test/test_asyncio/test_staggered.py b/Lib/test/test_asyncio/test_staggered.py
new file mode 100644
index 00000000000000..40455a3804e3dd
--- /dev/null
+++ b/Lib/test/test_asyncio/test_staggered.py
@@ -0,0 +1,151 @@
+import asyncio
+import unittest
+from asyncio.staggered import staggered_race
+
+from test import support
+
+support.requires_working_socket(module=True)
+
+
+def tearDownModule():
+    asyncio.set_event_loop_policy(None)
+
+
+class StaggeredTests(unittest.IsolatedAsyncioTestCase):
+    async def test_empty(self):
+        winner, index, excs = await staggered_race(
+            [],
+            delay=None,
+        )
+
+        self.assertIs(winner, None)
+        self.assertIs(index, None)
+        self.assertEqual(excs, [])
+
+    async def test_one_successful(self):
+        async def coro(index):
+            return f'Res: {index}'
+
+        winner, index, excs = await staggered_race(
+            [
+                lambda: coro(0),
+                lambda: coro(1),
+            ],
+            delay=None,
+        )
+
+        self.assertEqual(winner, 'Res: 0')
+        self.assertEqual(index, 0)
+        self.assertEqual(excs, [None])
+
+    async def test_first_error_second_successful(self):
+        async def coro(index):
+            if index == 0:
+                raise ValueError(index)
+            return f'Res: {index}'
+
+        winner, index, excs = await staggered_race(
+            [
+                lambda: coro(0),
+                lambda: coro(1),
+            ],
+            delay=None,
+        )
+
+        self.assertEqual(winner, 'Res: 1')
+        self.assertEqual(index, 1)
+        self.assertEqual(len(excs), 2)
+        self.assertIsInstance(excs[0], ValueError)
+        self.assertIs(excs[1], None)
+
+    async def test_first_timeout_second_successful(self):
+        async def coro(index):
+            if index == 0:
+                await asyncio.sleep(10)  # much bigger than delay
+            return f'Res: {index}'
+
+        winner, index, excs = await staggered_race(
+            [
+                lambda: coro(0),
+                lambda: coro(1),
+            ],
+            delay=0.1,
+        )
+
+        self.assertEqual(winner, 'Res: 1')
+        self.assertEqual(index, 1)
+        self.assertEqual(len(excs), 2)
+        self.assertIsInstance(excs[0], asyncio.CancelledError)
+        self.assertIs(excs[1], None)
+
+    async def test_none_successful(self):
+        async def coro(index):
+            raise ValueError(index)
+
+        winner, index, excs = await staggered_race(
+            [
+                lambda: coro(0),
+                lambda: coro(1),
+            ],
+            delay=None,
+        )
+
+        self.assertIs(winner, None)
+        self.assertIs(index, None)
+        self.assertEqual(len(excs), 2)
+        self.assertIsInstance(excs[0], ValueError)
+        self.assertIsInstance(excs[1], ValueError)
+
+
+    async def test_multiple_winners(self):
+        event = asyncio.Event()
+
+        async def coro(index):
+            await event.wait()
+            return index
+
+        async def do_set():
+            event.set()
+            await asyncio.Event().wait()
+
+        winner, index, excs = await staggered_race(
+            [
+                lambda: coro(0),
+                lambda: coro(1),
+                do_set,
+            ],
+            delay=0.1,
+        )
+        self.assertIs(winner, 0)
+        self.assertIs(index, 0)
+        self.assertEqual(len(excs), 3)
+        self.assertIsNone(excs[0], None)
+        self.assertIsInstance(excs[1], asyncio.CancelledError)
+        self.assertIsInstance(excs[2], asyncio.CancelledError)
+
+
+    async def test_cancelled(self):
+        log = []
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(None) as cs_outer, asyncio.timeout(None) as cs_inner:
+                async def coro_fn():
+                    cs_inner.reschedule(-1)
+                    await asyncio.sleep(0)
+                    try:
+                        await asyncio.sleep(0)
+                    except asyncio.CancelledError:
+                        log.append("cancelled 1")
+
+                    cs_outer.reschedule(-1)
+                    await asyncio.sleep(0)
+                    try:
+                        await asyncio.sleep(0)
+                    except asyncio.CancelledError:
+                        log.append("cancelled 2")
+                try:
+                    await staggered_race([coro_fn], delay=None)
+                except asyncio.CancelledError:
+                    log.append("cancelled 3")
+                    raise
+
+        self.assertListEqual(log, ["cancelled 1", "cancelled 2", "cancelled 3"])
diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
index ae943f39869815..3040ca55fae0e9 100644
--- a/Lib/test/test_asyncio/test_streams.py
+++ b/Lib/test/test_asyncio/test_streams.py
@@ -1246,6 +1246,24 @@ async def handle_echo(reader, writer):
         messages = self._basetest_unhandled_exceptions(handle_echo)
         self.assertEqual(messages, [])
 
+    def test_open_connection_happy_eyeball_refcycles(self):
+        port = socket_helper.find_unused_port()
+        async def main():
+            exc = None
+            try:
+                await asyncio.open_connection(
+                    host="localhost",
+                    port=port,
+                    happy_eyeballs_delay=0.25,
+                )
+            except* OSError as excs:
+                # can't use assertRaises because that clears frames
+                exc = excs.exceptions[0]
+            self.assertIsNotNone(exc)
+            self.assertListEqual(gc.get_referrers(exc), [])
+
+        asyncio.run(main())
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_subprocess.py b/Lib/test/test_asyncio/test_subprocess.py
index cf1a1985338e40..c822d8045b0c0f 100644
--- a/Lib/test/test_asyncio/test_subprocess.py
+++ b/Lib/test/test_asyncio/test_subprocess.py
@@ -873,6 +873,21 @@ async def main():
 
         self.loop.run_until_complete(main())
 
+    @unittest.skipIf(sys.platform != 'linux', "Linux only")
+    def test_subprocess_send_signal_race(self):
+        # See https://github.com/python/cpython/issues/87744
+        async def main():
+            for _ in range(10):
+                proc = await asyncio.create_subprocess_exec('sleep', '0.1')
+                await asyncio.sleep(0.1)
+                try:
+                    proc.send_signal(signal.SIGUSR1)
+                except ProcessLookupError:
+                    pass
+                self.assertNotEqual(await proc.wait(), 255)
+
+        self.loop.run_until_complete(main())
+
 
 if sys.platform != 'win32':
     # Unix
diff --git a/Lib/test/test_asyncio/test_taskgroups.py b/Lib/test/test_asyncio/test_taskgroups.py
index 4852536defc93d..ad61cb46c7c07c 100644
--- a/Lib/test/test_asyncio/test_taskgroups.py
+++ b/Lib/test/test_asyncio/test_taskgroups.py
@@ -1,7 +1,9 @@
 # Adapted with permission from the EdgeDB project;
 # license: PSFL.
 
-
+import weakref
+import sys
+import gc
 import asyncio
 import contextvars
 import contextlib
@@ -11,7 +13,6 @@
 
 from test.test_asyncio.utils import await_without_task
 
-
 # To prevent a warning "test altered the execution environment"
 def tearDownModule():
     asyncio.set_event_loop_policy(None)
@@ -29,7 +30,25 @@ def get_error_types(eg):
     return {type(exc) for exc in eg.exceptions}
 
 
-class TestTaskGroup(unittest.IsolatedAsyncioTestCase):
+def set_gc_state(enabled):
+    was_enabled = gc.isenabled()
+    if enabled:
+        gc.enable()
+    else:
+        gc.disable()
+    return was_enabled
+
+
+@contextlib.contextmanager
+def disable_gc():
+    was_enabled = set_gc_state(enabled=False)
+    try:
+        yield
+    finally:
+        set_gc_state(enabled=was_enabled)
+
+
+class BaseTestTaskGroup:
 
     async def test_taskgroup_01(self):
 
@@ -823,15 +842,15 @@ async def test_taskgroup_without_parent_task(self):
         with self.assertRaisesRegex(RuntimeError, "has not been entered"):
             tg.create_task(coro)
 
-    def test_coro_closed_when_tg_closed(self):
+    async def test_coro_closed_when_tg_closed(self):
         async def run_coro_after_tg_closes():
             async with taskgroups.TaskGroup() as tg:
                 pass
             coro = asyncio.sleep(0)
             with self.assertRaisesRegex(RuntimeError, "is finished"):
                 tg.create_task(coro)
-        loop = asyncio.get_event_loop()
-        loop.run_until_complete(run_coro_after_tg_closes())
+
+        await run_coro_after_tg_closes()
 
     async def test_cancelling_level_preserved(self):
         async def raise_after(t, e):
@@ -899,6 +918,180 @@ async def outer():
 
         await outer()
 
+    async def test_exception_refcycles_direct(self):
+        """Test that TaskGroup doesn't keep a reference to the raised ExceptionGroup"""
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        class _Done(Exception):
+            pass
+
+        try:
+            async with tg:
+                raise _Done
+        except ExceptionGroup as e:
+            exc = e
+
+        self.assertIsNotNone(exc)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+
+    async def test_exception_refcycles_errors(self):
+        """Test that TaskGroup deletes self._errors, and __aexit__ args"""
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        class _Done(Exception):
+            pass
+
+        try:
+            async with tg:
+                raise _Done
+        except* _Done as excs:
+            exc = excs.exceptions[0]
+
+        self.assertIsInstance(exc, _Done)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+
+    async def test_exception_refcycles_parent_task(self):
+        """Test that TaskGroup deletes self._parent_task"""
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        class _Done(Exception):
+            pass
+
+        async def coro_fn():
+            async with tg:
+                raise _Done
+
+        try:
+            async with asyncio.TaskGroup() as tg2:
+                tg2.create_task(coro_fn())
+        except* _Done as excs:
+            exc = excs.exceptions[0].exceptions[0]
+
+        self.assertIsInstance(exc, _Done)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+
+    async def test_exception_refcycles_parent_task_wr(self):
+        """Test that TaskGroup deletes self._parent_task and create_task() deletes task"""
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        class _Done(Exception):
+            pass
+
+        async def coro_fn():
+            async with tg:
+                raise _Done
+
+        with disable_gc():
+            try:
+                async with asyncio.TaskGroup() as tg2:
+                    task_wr = weakref.ref(tg2.create_task(coro_fn()))
+            except* _Done as excs:
+                exc = excs.exceptions[0].exceptions[0]
+
+        self.assertIsNone(task_wr())
+        self.assertIsInstance(exc, _Done)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+    async def test_exception_refcycles_propagate_cancellation_error(self):
+        """Test that TaskGroup deletes propagate_cancellation_error"""
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        try:
+            async with asyncio.timeout(-1):
+                async with tg:
+                    await asyncio.sleep(0)
+        except TimeoutError as e:
+            exc = e.__cause__
+
+        self.assertIsInstance(exc, asyncio.CancelledError)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+    async def test_exception_refcycles_base_error(self):
+        """Test that TaskGroup deletes self._base_error"""
+        class MyKeyboardInterrupt(KeyboardInterrupt):
+            pass
+
+        tg = asyncio.TaskGroup()
+        exc = None
+
+        try:
+            async with tg:
+                raise MyKeyboardInterrupt
+        except MyKeyboardInterrupt as e:
+            exc = e
+
+        self.assertIsNotNone(exc)
+        self.assertListEqual(gc.get_referrers(exc), [])
+
+
+    async def test_cancels_task_if_created_during_creation(self):
+        # regression test for gh-128550
+        ran = False
+        class MyError(Exception):
+            pass
+
+        exc = None
+        try:
+            async with asyncio.TaskGroup() as tg:
+                async def third_task():
+                    raise MyError("third task failed")
+
+                async def second_task():
+                    nonlocal ran
+                    tg.create_task(third_task())
+                    with self.assertRaises(asyncio.CancelledError):
+                        await asyncio.sleep(0)  # eager tasks cancel here
+                        await asyncio.sleep(0)  # lazy tasks cancel here
+                    ran = True
+
+                tg.create_task(second_task())
+        except* MyError as excs:
+            exc = excs.exceptions[0]
+
+        self.assertTrue(ran)
+        self.assertIsInstance(exc, MyError)
+
+
+    async def test_cancellation_does_not_leak_out_of_tg(self):
+        class MyError(Exception):
+            pass
+
+        async def throw_error():
+            raise MyError
+
+        try:
+            async with asyncio.TaskGroup() as tg:
+                tg.create_task(throw_error())
+        except* MyError:
+            pass
+        else:
+            self.fail("should have raised one MyError in group")
+
+        # if this test fails this current task will be cancelled
+        # outside the task group and inside unittest internals
+        # we yield to the event loop with sleep(0) so that
+        # cancellation happens here and error is more understandable
+        await asyncio.sleep(0)
+
+
+class TestTaskGroup(BaseTestTaskGroup, unittest.IsolatedAsyncioTestCase):
+    loop_factory = asyncio.EventLoop
+
+class TestEagerTaskTaskGroup(BaseTestTaskGroup, unittest.IsolatedAsyncioTestCase):
+    @staticmethod
+    def loop_factory():
+        loop = asyncio.EventLoop()
+        loop.set_task_factory(asyncio.eager_task_factory)
+        return loop
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 5b09c81faef62a..313eed9d715158 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -2684,6 +2684,28 @@ def test_get_context(self):
         finally:
             loop.close()
 
+    def test_proper_refcounts(self):
+        # see: https://github.com/python/cpython/issues/126083
+        class Break:
+            def __str__(self):
+                raise RuntimeError("break")
+
+        obj = object()
+        initial_refcount = sys.getrefcount(obj)
+
+        coro = coroutine_function()
+        loop = asyncio.new_event_loop()
+        task = asyncio.Task.__new__(asyncio.Task)
+
+        for _ in range(5):
+            with self.assertRaisesRegex(RuntimeError, 'break'):
+                task.__init__(coro, loop=loop, context=obj, name=Break())
+
+        coro.close()
+        del task
+
+        self.assertEqual(sys.getrefcount(obj), initial_refcount)
+
 
 def add_subclass_tests(cls):
     BaseTask = cls.Task
diff --git a/Lib/test/test_asyncio/test_threads.py b/Lib/test/test_asyncio/test_threads.py
index 1138a93e0f78ec..774380270a7d70 100644
--- a/Lib/test/test_asyncio/test_threads.py
+++ b/Lib/test/test_asyncio/test_threads.py
@@ -30,7 +30,9 @@ async def test_to_thread_once(self):
         func.assert_called_once()
 
     async def test_to_thread_concurrent(self):
-        func = mock.Mock()
+        calls = []
+        def func():
+            calls.append(1)
 
         futs = []
         for _ in range(10):
@@ -38,7 +40,7 @@ async def test_to_thread_concurrent(self):
             futs.append(fut)
         await asyncio.gather(*futs)
 
-        self.assertEqual(func.call_count, 10)
+        self.assertEqual(sum(calls), 10)
 
     async def test_to_thread_args_kwargs(self):
         # Unlike run_in_executor(), to_thread() should directly accept kwargs.
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index 59ef9f5f58cabc..0e5488da27211e 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -6,7 +6,6 @@
 import multiprocessing
 from multiprocessing.util import _cleanup_tests as multiprocessing_cleanup_tests
 import os
-import pathlib
 import signal
 import socket
 import stat
@@ -304,20 +303,20 @@ def test_create_unix_server_existing_path_sock(self):
             self.loop.run_until_complete(srv.wait_closed())
 
     @socket_helper.skip_unless_bind_unix_socket
-    def test_create_unix_server_pathlib(self):
+    def test_create_unix_server_pathlike(self):
         with test_utils.unix_socket_path() as path:
-            path = pathlib.Path(path)
+            path = os_helper.FakePath(path)
             srv_coro = self.loop.create_unix_server(lambda: None, path)
             srv = self.loop.run_until_complete(srv_coro)
             srv.close()
             self.loop.run_until_complete(srv.wait_closed())
 
-    def test_create_unix_connection_pathlib(self):
+    def test_create_unix_connection_pathlike(self):
         with test_utils.unix_socket_path() as path:
-            path = pathlib.Path(path)
+            path = os_helper.FakePath(path)
             coro = self.loop.create_unix_connection(lambda: None, path)
             with self.assertRaises(FileNotFoundError):
-                # If pathlib.Path wasn't supported, the exception would be
+                # If path-like object weren't supported, the exception would be
                 # different.
                 self.loop.run_until_complete(coro)
 
@@ -1904,6 +1903,7 @@ async def test_fork_not_share_event_loop(self):
             wait_process(pid, exitcode=0)
 
     @hashlib_helper.requires_hashdigest('md5')
+    @support.skip_if_sanitizer("TSAN doesn't support threads after fork", thread=True)
     def test_fork_signal_handling(self):
         self.addCleanup(multiprocessing_cleanup_tests)
 
@@ -1950,6 +1950,7 @@ async def func():
         self.assertTrue(child_handled.is_set())
 
     @hashlib_helper.requires_hashdigest('md5')
+    @support.skip_if_sanitizer("TSAN doesn't support threads after fork", thread=True)
     def test_fork_asyncio_run(self):
         self.addCleanup(multiprocessing_cleanup_tests)
 
@@ -1969,6 +1970,7 @@ async def child_main():
         self.assertEqual(result.value, 42)
 
     @hashlib_helper.requires_hashdigest('md5')
+    @support.skip_if_sanitizer("TSAN doesn't support threads after fork", thread=True)
     def test_fork_asyncio_subprocess(self):
         self.addCleanup(multiprocessing_cleanup_tests)
 
diff --git a/Lib/test/test_asyncio/utils.py b/Lib/test/test_asyncio/utils.py
index 44943e1fa7bc4e..ce2408fc1aabfb 100644
--- a/Lib/test/test_asyncio/utils.py
+++ b/Lib/test/test_asyncio/utils.py
@@ -301,12 +301,17 @@ def run_udp_echo_server(*, host='127.0.0.1', port=0):
     family, type, proto, _, sockaddr = addr_info[0]
     sock = socket.socket(family, type, proto)
     sock.bind((host, port))
+    sockname = sock.getsockname()
     thread = threading.Thread(target=lambda: echo_datagrams(sock))
     thread.start()
     try:
-        yield sock.getsockname()
+        yield sockname
     finally:
-        sock.sendto(b'STOP', sock.getsockname())
+        # gh-122187: use a separate socket to send the stop message to avoid
+        # TSan reported race on the same socket.
+        sock2 = socket.socket(family, type, proto)
+        sock2.sendto(b'STOP', sockname)
+        sock2.close()
         thread.join()
 
 
diff --git a/Lib/test/test_audit.py b/Lib/test/test_audit.py
index e163c7ad25cc7b..ddd9f951143df7 100644
--- a/Lib/test/test_audit.py
+++ b/Lib/test/test_audit.py
@@ -140,6 +140,7 @@ def test_gc(self):
         )
 
 
+    @support.requires_resource('network')
     def test_http(self):
         import_helper.import_module("http.client")
         returncode, events, stderr = self.run_python("test_http_client")
@@ -291,6 +292,27 @@ def test_sys_monitoring_register_callback(self):
 
         self.assertEqual(actual, expected)
 
+    def test_winapi_createnamedpipe(self):
+        winapi = import_helper.import_module("_winapi")
+
+        pipe_name = r"\\.\pipe\LOCAL\test_winapi_createnamed_pipe"
+        returncode, events, stderr = self.run_python("test_winapi_createnamedpipe", pipe_name)
+        if returncode:
+            self.fail(stderr)
+
+        if support.verbose:
+            print(*events, sep='\n')
+        actual = [(ev[0], ev[2]) for ev in events]
+        expected = [("_winapi.CreateNamedPipe", f"({pipe_name!r}, 3, 8)")]
+
+        self.assertEqual(actual, expected)
+
+    def test_assert_unicode(self):
+        # See gh-126018
+        returncode, _, stderr = self.run_python("test_assert_unicode")
+        if returncode:
+            self.fail(stderr)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_baseexception.py b/Lib/test/test_baseexception.py
index 6dc06c5e4bc9d5..e599b02c17d9c0 100644
--- a/Lib/test/test_baseexception.py
+++ b/Lib/test/test_baseexception.py
@@ -78,6 +78,9 @@ def test_inheritance(self):
                 last_depth = depth
         finally:
             inheritance_tree.close()
+
+        # Underscore-prefixed (private) exceptions don't need to be documented
+        exc_set = set(e for e in exc_set if not e.startswith('_'))
         self.assertEqual(len(exc_set), 0, "%s not accounted for" % exc_set)
 
     interface_tests = ("length", "args", "str", "repr")
diff --git a/Lib/test/test_bdb.py b/Lib/test/test_bdb.py
index ed1a63daea1186..2e20c08a672d57 100644
--- a/Lib/test/test_bdb.py
+++ b/Lib/test/test_bdb.py
@@ -1216,6 +1216,19 @@ def main():
             with TracerRun(self) as tracer:
                 tracer.runcall(tfunc_import)
 
+    def test_next_to_botframe(self):
+        # gh-125422
+        # Check that next command won't go to the bottom frame.
+        code = """
+            lno = 2
+        """
+        self.expect_set = [
+            ('line', 2, '<module>'),   ('step', ),
+            ('return', 2, '<module>'), ('next', ),
+        ]
+        with TracerRun(self) as tracer:
+            tracer.run(compile(textwrap.dedent(code), '<string>', 'exec'))
+
 
 class TestRegressions(unittest.TestCase):
     def test_format_stack_entry_no_lineno(self):
diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
index 5b1b95b9c82064..d20280ca834a9c 100644
--- a/Lib/test/test_buffer.py
+++ b/Lib/test/test_buffer.py
@@ -3910,6 +3910,8 @@ def test_memoryview_check_released(self):
         self.assertRaises(ValueError, memoryview, m)
         # memoryview.cast()
         self.assertRaises(ValueError, m.cast, 'c')
+        # memoryview.__iter__()
+        self.assertRaises(ValueError, m.__iter__)
         # getbuffer()
         self.assertRaises(ValueError, ndarray, m)
         # memoryview.tolist()
@@ -4437,6 +4439,14 @@ def test_issue_7385(self):
         x = ndarray([1,2,3], shape=[3], flags=ND_GETBUF_FAIL)
         self.assertRaises(BufferError, memoryview, x)
 
+    def test_bytearray_release_buffer_read_flag(self):
+        # See https://github.com/python/cpython/issues/126980
+        obj = bytearray(b'abc')
+        with self.assertRaises(SystemError):
+            obj.__buffer__(inspect.BufferFlags.READ)
+        with self.assertRaises(SystemError):
+            obj.__buffer__(inspect.BufferFlags.WRITE)
+
     @support.cpython_only
     def test_pybuffer_size_from_format(self):
         # basic tests
@@ -4444,6 +4454,21 @@ def test_pybuffer_size_from_format(self):
             self.assertEqual(_testcapi.PyBuffer_SizeFromFormat(format),
                              struct.calcsize(format))
 
+    @support.cpython_only
+    def test_flags_overflow(self):
+        # gh-126594: Check for integer overlow on large flags
+        try:
+            from _testcapi import INT_MIN, INT_MAX
+        except ImportError:
+            INT_MIN = -(2 ** 31)
+            INT_MAX = 2 ** 31 - 1
+
+        obj = b'abc'
+        for flags in (INT_MIN - 1, INT_MAX + 1):
+            with self.subTest(flags=flags):
+                with self.assertRaises(OverflowError):
+                    obj.__buffer__(flags)
+
 
 class TestPythonBufferProtocol(unittest.TestCase):
     def test_basic(self):
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 230789f29ff788..3a5531924976f7 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -4,6 +4,7 @@
 import asyncio
 import builtins
 import collections
+import contextlib
 import decimal
 import fractions
 import gc
@@ -30,6 +31,7 @@
 from operator import neg
 from test import support
 from test.support import (cpython_only, swap_attr, maybe_get_event_loop_policy)
+from test.support.import_helper import import_module
 from test.support.os_helper import (EnvironmentVarGuard, TESTFN, unlink)
 from test.support.script_helper import assert_python_ok
 from test.support.warnings_helper import check_warnings
@@ -2139,6 +2141,24 @@ def test_warning_notimplemented(self):
         with self.assertWarns(DeprecationWarning):
             self.assertFalse(not NotImplemented)
 
+    def test_singleton_attribute_access(self):
+        for singleton in (NotImplemented, Ellipsis):
+            with self.subTest(singleton):
+                self.assertIs(type(singleton), singleton.__class__)
+                self.assertIs(type(singleton).__class__, type)
+
+                # Missing instance attributes:
+                with self.assertRaises(AttributeError):
+                    singleton.prop = 1
+                with self.assertRaises(AttributeError):
+                    singleton.prop
+
+                # Missing class attributes:
+                with self.assertRaises(TypeError):
+                    type(singleton).prop = 1
+                with self.assertRaises(AttributeError):
+                    type(singleton).prop
+
 
 class TestBreakpoint(unittest.TestCase):
     def setUp(self):
@@ -2351,7 +2371,8 @@ def child(wpipe):
                 print(ascii(input(prompt)), file=wpipe)
             except BaseException as e:
                 print(ascii(f'{e.__class__.__name__}: {e!s}'), file=wpipe)
-        lines = self.run_child(child, terminal_input + b"\r\n")
+        with self.detach_readline():
+            lines = self.run_child(child, terminal_input + b"\r\n")
         # Check we did exercise the GNU readline path
         self.assertIn(lines[0], {'tty = True', 'tty = False'})
         if lines[0] != 'tty = True':
@@ -2364,28 +2385,36 @@ def child(wpipe):
                 expected = terminal_input.decode(sys.stdin.encoding)  # what else?
         self.assertEqual(input_result, expected)
 
-    def test_input_tty(self):
-        # Test input() functionality when wired to a tty (the code path
-        # is different and invokes GNU readline if available).
-        self.check_input_tty("prompt", b"quux")
-
-    def skip_if_readline(self):
+    @contextlib.contextmanager
+    def detach_readline(self):
         # bpo-13886: When the readline module is loaded, PyOS_Readline() uses
         # the readline implementation. In some cases, the Python readline
         # callback rlhandler() is called by readline with a string without
-        # non-ASCII characters. Skip tests on non-ASCII characters if the
-        # readline module is loaded, since test_builtin is not intended to test
+        # non-ASCII characters.
+        # Unlink readline temporarily from PyOS_Readline() for those tests,
+        # since test_builtin is not intended to test
         # the readline module, but the builtins module.
-        if 'readline' in sys.modules:
-            self.skipTest("the readline module is loaded")
+        if "readline" in sys.modules:
+            c = import_module("ctypes")
+            fp_api = "PyOS_ReadlineFunctionPointer"
+            prev_value = c.c_void_p.in_dll(c.pythonapi, fp_api).value
+            c.c_void_p.in_dll(c.pythonapi, fp_api).value = None
+            try:
+                yield
+            finally:
+                c.c_void_p.in_dll(c.pythonapi, fp_api).value = prev_value
+        else:
+            yield
+
+    def test_input_tty(self):
+        # Test input() functionality when wired to a tty
+        self.check_input_tty("prompt", b"quux")
 
     def test_input_tty_non_ascii(self):
-        self.skip_if_readline()
         # Check stdin/stdout encoding is used when invoking PyOS_Readline()
         self.check_input_tty("prompté", b"quux\xc3\xa9", "utf-8")
 
     def test_input_tty_non_ascii_unicode_errors(self):
-        self.skip_if_readline()
         # Check stdin/stdout error handler is used when invoking PyOS_Readline()
         self.check_input_tty("prompté", b"quux\xe9", "ascii")
 
@@ -2395,14 +2424,12 @@ def test_input_tty_null_in_prompt(self):
                          'null characters')
 
     def test_input_tty_nonencodable_prompt(self):
-        self.skip_if_readline()
         self.check_input_tty("prompté", b"quux", "ascii", stdout_errors='strict',
                 expected="UnicodeEncodeError: 'ascii' codec can't encode "
                          "character '\\xe9' in position 6: ordinal not in "
                          "range(128)")
 
     def test_input_tty_nondecodable_input(self):
-        self.skip_if_readline()
         self.check_input_tty("prompt", b"quux\xe9", "ascii", stdin_errors='strict',
                 expected="UnicodeDecodeError: 'ascii' codec can't decode "
                          "byte 0xe9 in position 4: ordinal not in "
@@ -2537,6 +2564,7 @@ def test_new_type(self):
         self.assertEqual(A.__module__, __name__)
         self.assertEqual(A.__bases__, (object,))
         self.assertIs(A.__base__, object)
+        self.assertNotIn('__firstlineno__', A.__dict__)
         x = A()
         self.assertIs(type(x), A)
         self.assertIs(x.__class__, A)
@@ -2615,6 +2643,17 @@ def test_type_qualname(self):
             A.__qualname__ = b'B'
         self.assertEqual(A.__qualname__, 'D.E')
 
+    def test_type_firstlineno(self):
+        A = type('A', (), {'__firstlineno__': 42})
+        self.assertEqual(A.__name__, 'A')
+        self.assertEqual(A.__module__, __name__)
+        self.assertEqual(A.__dict__['__firstlineno__'], 42)
+        A.__module__ = 'testmodule'
+        self.assertEqual(A.__module__, 'testmodule')
+        self.assertNotIn('__firstlineno__', A.__dict__)
+        A.__firstlineno__ = 43
+        self.assertEqual(A.__dict__['__firstlineno__'], 43)
+
     def test_type_typeparams(self):
         class A[T]:
             pass
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index e4d1381be5f340..7d786be1d25b1c 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -476,7 +476,6 @@ def testReadlinesNoNewline(self):
         self.assertEqual(xlines, [b'Test'])
 
     def testContextProtocol(self):
-        f = None
         with BZ2File(self.filename, "wb") as f:
             f.write(b"xxx")
         f = BZ2File(self.filename, "rb")
diff --git a/Lib/test/test_calendar.py b/Lib/test/test_calendar.py
index 1f9ffc5e9a5c33..df102fe1986e61 100644
--- a/Lib/test/test_calendar.py
+++ b/Lib/test/test_calendar.py
@@ -457,6 +457,11 @@ def test_formatmonth(self):
             calendar.TextCalendar().formatmonth(0, 2),
             result_0_02_text
         )
+    def test_formatmonth_with_invalid_month(self):
+        with self.assertRaises(calendar.IllegalMonthError):
+            calendar.TextCalendar().formatmonth(2017, 13)
+        with self.assertRaises(calendar.IllegalMonthError):
+            calendar.TextCalendar().formatmonth(2017, -1)
 
     def test_formatmonthname_with_year(self):
         self.assertEqual(
@@ -1121,7 +1126,7 @@ def test__all__(self):
         not_exported = {
             'mdays', 'January', 'February', 'EPOCH',
             'different_locale', 'c', 'prweek', 'week', 'format',
-            'formatstring', 'main', 'monthlen', 'prevmonth', 'nextmonth'}
+            'formatstring', 'main', 'monthlen', 'prevmonth', 'nextmonth', ""}
         support.check__all__(self, calendar, not_exported=not_exported)
 
 
@@ -1149,6 +1154,13 @@ def test_formatmonth(self):
         self.assertIn('class="text-center month"',
                       self.cal.formatmonth(2017, 5))
 
+    def test_formatmonth_with_invalid_month(self):
+        with self.assertRaises(calendar.IllegalMonthError):
+            self.cal.formatmonth(2017, 13)
+        with self.assertRaises(calendar.IllegalMonthError):
+            self.cal.formatmonth(2017, -1)
+
+
     def test_formatweek(self):
         weeks = self.cal.monthdays2calendar(2017, 5)
         self.assertIn('class="wed text-nowrap"', self.cal.formatweek(weeks[0]))
diff --git a/Lib/test/test_capi/test_abstract.py b/Lib/test/test_capi/test_abstract.py
index bc39036e90bf8b..dd55596b96df3b 100644
--- a/Lib/test/test_capi/test_abstract.py
+++ b/Lib/test/test_capi/test_abstract.py
@@ -994,13 +994,6 @@ def test_sequence_tuple(self):
         self.assertRaises(TypeError, xtuple, 42)
         self.assertRaises(SystemError, xtuple, NULL)
 
-    def test_number_check(self):
-        number_check = _testlimitedcapi.number_check
-        self.assertTrue(number_check(1 + 1j))
-        self.assertTrue(number_check(1))
-        self.assertTrue(number_check(0.5))
-        self.assertFalse(number_check("1 + 1j"))
-
     def test_object_generichash(self):
         # Test PyObject_GenericHash()
         generichash = _testcapi.object_generichash
diff --git a/Lib/test/test_capi/test_bytes.py b/Lib/test/test_capi/test_bytes.py
index f14d5545c829e5..d5f047bcf18277 100644
--- a/Lib/test/test_capi/test_bytes.py
+++ b/Lib/test/test_capi/test_bytes.py
@@ -53,6 +53,8 @@ def test_fromstringandsize(self):
         self.assertEqual(fromstringandsize(b'abc'), b'abc')
         self.assertEqual(fromstringandsize(b'abc', 2), b'ab')
         self.assertEqual(fromstringandsize(b'abc\0def'), b'abc\0def')
+        self.assertEqual(fromstringandsize(b'a'), b'a')
+        self.assertEqual(fromstringandsize(b'a', 1), b'a')
         self.assertEqual(fromstringandsize(b'', 0), b'')
         self.assertEqual(fromstringandsize(NULL, 0), b'')
         self.assertEqual(len(fromstringandsize(NULL, 3)), 3)
diff --git a/Lib/test/test_capi/test_eval.py b/Lib/test/test_capi/test_eval.py
new file mode 100644
index 00000000000000..20ef2695ef3e27
--- /dev/null
+++ b/Lib/test/test_capi/test_eval.py
@@ -0,0 +1,103 @@
+import sys
+import unittest
+from test.support import import_helper
+
+_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
+
+
+class Tests(unittest.TestCase):
+    def test_eval_get_func_name(self):
+        eval_get_func_name = _testlimitedcapi.eval_get_func_name
+
+        def function_example(): ...
+
+        class A:
+            def method_example(self): ...
+
+        self.assertEqual(eval_get_func_name(function_example),
+                         "function_example")
+        self.assertEqual(eval_get_func_name(A.method_example),
+                         "method_example")
+        self.assertEqual(eval_get_func_name(A().method_example),
+                         "method_example")
+        self.assertEqual(eval_get_func_name(sum), "sum")  # c function
+        self.assertEqual(eval_get_func_name(A), "type")
+
+    def test_eval_get_func_desc(self):
+        eval_get_func_desc = _testlimitedcapi.eval_get_func_desc
+
+        def function_example(): ...
+
+        class A:
+            def method_example(self): ...
+
+        self.assertEqual(eval_get_func_desc(function_example),
+                         "()")
+        self.assertEqual(eval_get_func_desc(A.method_example),
+                         "()")
+        self.assertEqual(eval_get_func_desc(A().method_example),
+                         "()")
+        self.assertEqual(eval_get_func_desc(sum), "()")  # c function
+        self.assertEqual(eval_get_func_desc(A), " object")
+
+    def test_eval_getlocals(self):
+        # Test PyEval_GetLocals()
+        x = 1
+        self.assertEqual(_testlimitedcapi.eval_getlocals(),
+            {'self': self,
+             'x': 1})
+
+        y = 2
+        self.assertEqual(_testlimitedcapi.eval_getlocals(),
+            {'self': self,
+             'x': 1,
+             'y': 2})
+
+    def test_eval_getglobals(self):
+        # Test PyEval_GetGlobals()
+        self.assertEqual(_testlimitedcapi.eval_getglobals(),
+                         globals())
+
+    def test_eval_getbuiltins(self):
+        # Test PyEval_GetBuiltins()
+        self.assertEqual(_testlimitedcapi.eval_getbuiltins(),
+                         globals()['__builtins__'])
+
+    def test_eval_getframe(self):
+        # Test PyEval_GetFrame()
+        self.assertEqual(_testlimitedcapi.eval_getframe(),
+                         sys._getframe())
+
+    def test_eval_getframe_builtins(self):
+        # Test PyEval_GetFrameBuiltins()
+        self.assertEqual(_testlimitedcapi.eval_getframe_builtins(),
+                         sys._getframe().f_builtins)
+
+    def test_eval_getframe_globals(self):
+        # Test PyEval_GetFrameGlobals()
+        self.assertEqual(_testlimitedcapi.eval_getframe_globals(),
+                         sys._getframe().f_globals)
+
+    def test_eval_getframe_locals(self):
+        # Test PyEval_GetFrameLocals()
+        self.assertEqual(_testlimitedcapi.eval_getframe_locals(),
+                         sys._getframe().f_locals)
+
+    def test_eval_get_recursion_limit(self):
+        # Test Py_GetRecursionLimit()
+        self.assertEqual(_testlimitedcapi.eval_get_recursion_limit(),
+                         sys.getrecursionlimit())
+
+    def test_eval_set_recursion_limit(self):
+        # Test Py_SetRecursionLimit()
+        old_limit = sys.getrecursionlimit()
+        try:
+            limit = old_limit + 123
+            _testlimitedcapi.eval_set_recursion_limit(limit)
+            self.assertEqual(sys.getrecursionlimit(), limit)
+        finally:
+            sys.setrecursionlimit(old_limit)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_exceptions.py b/Lib/test/test_capi/test_exceptions.py
index 1d158e3586e98d..c475b6d78d0c56 100644
--- a/Lib/test/test_capi/test_exceptions.py
+++ b/Lib/test/test_capi/test_exceptions.py
@@ -3,11 +3,12 @@
 import re
 import sys
 import unittest
+import textwrap
 
 from test import support
 from test.support import import_helper
 from test.support.os_helper import TESTFN, TESTFN_UNDECODABLE
-from test.support.script_helper import assert_python_failure
+from test.support.script_helper import assert_python_failure, assert_python_ok
 from test.support.testcase import ExceptionIsLikeMixin
 
 from .test_misc import decode_stderr
@@ -68,6 +69,47 @@ def test_exc_info(self):
         else:
             self.assertTrue(False)
 
+    def test_warn_with_stacklevel(self):
+        code = textwrap.dedent('''\
+            import _testcapi
+
+            def foo():
+                _testcapi.function_set_warning()
+
+            foo()  # line 6
+
+
+            foo()  # line 9
+        ''')
+        proc = assert_python_ok("-c", code)
+        warnings = proc.err.splitlines()
+        self.assertEqual(warnings, [
+            b'<string>:6: RuntimeWarning: Testing PyErr_WarnEx',
+            b'  foo()  # line 6',
+            b'<string>:9: RuntimeWarning: Testing PyErr_WarnEx',
+            b'  foo()  # line 9',
+        ])
+
+    def test_warn_during_finalization(self):
+        code = textwrap.dedent('''\
+            import _testcapi
+
+            class Foo:
+                def foo(self):
+                    _testcapi.function_set_warning()
+                def __del__(self):
+                    self.foo()
+
+            ref = Foo()
+        ''')
+        proc = assert_python_ok("-c", code)
+        warnings = proc.err.splitlines()
+        # Due to the finalization of the interpreter, the source will be ommited
+        # because the ``warnings`` module cannot be imported at this time
+        self.assertEqual(warnings, [
+            b'<string>:7: RuntimeWarning: Testing PyErr_WarnEx',
+        ])
+
 
 class Test_FatalError(unittest.TestCase):
 
diff --git a/Lib/test/test_capi/test_file.py b/Lib/test/test_capi/test_file.py
new file mode 100644
index 00000000000000..373692d938568a
--- /dev/null
+++ b/Lib/test/test_capi/test_file.py
@@ -0,0 +1,234 @@
+import io
+import os
+import unittest
+import warnings
+from test import support
+from test.support import import_helper, os_helper, warnings_helper
+
+
+_testcapi = import_helper.import_module('_testcapi')
+_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
+_io = import_helper.import_module('_io')
+NULL = None
+STDOUT_FD = 1
+
+with open(__file__, 'rb') as fp:
+    FIRST_LINE = next(fp).decode()
+FIRST_LINE_NORM = FIRST_LINE.rstrip() + '\n'
+
+
+class CAPIFileTest(unittest.TestCase):
+    def test_pyfile_fromfd(self):
+        # Test PyFile_FromFd() which is a thin wrapper to _io.open()
+        pyfile_fromfd = _testlimitedcapi.pyfile_fromfd
+        filename = __file__
+        with open(filename, "rb") as fp:
+            fd = fp.fileno()
+
+            # FileIO
+            fp.seek(0)
+            obj = pyfile_fromfd(fd, filename, "rb", 0, NULL, NULL, NULL, 0)
+            try:
+                self.assertIsInstance(obj, _io.FileIO)
+                self.assertEqual(obj.readline(), FIRST_LINE.encode())
+            finally:
+                obj.close()
+
+            # BufferedReader
+            fp.seek(0)
+            obj = pyfile_fromfd(fd, filename, "rb", 1024, NULL, NULL, NULL, 0)
+            try:
+                self.assertIsInstance(obj, _io.BufferedReader)
+                self.assertEqual(obj.readline(), FIRST_LINE.encode())
+            finally:
+                obj.close()
+
+            # TextIOWrapper
+            fp.seek(0)
+            obj = pyfile_fromfd(fd, filename, "r", 1,
+                                "utf-8", "replace", NULL, 0)
+            try:
+                self.assertIsInstance(obj, _io.TextIOWrapper)
+                self.assertEqual(obj.encoding, "utf-8")
+                self.assertEqual(obj.errors, "replace")
+                self.assertEqual(obj.readline(), FIRST_LINE_NORM)
+            finally:
+                obj.close()
+
+    def test_pyfile_getline(self):
+        # Test PyFile_GetLine(file, n): call file.readline()
+        # and strip "\n" suffix if n < 0.
+        pyfile_getline = _testlimitedcapi.pyfile_getline
+
+        # Test Unicode
+        with open(__file__, "r") as fp:
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, -1),
+                             FIRST_LINE_NORM.rstrip('\n'))
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, 0),
+                             FIRST_LINE_NORM)
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, 6),
+                             FIRST_LINE_NORM[:6])
+
+        # Test bytes
+        with open(__file__, "rb") as fp:
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, -1),
+                             FIRST_LINE.rstrip('\n').encode())
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, 0),
+                             FIRST_LINE.encode())
+            fp.seek(0)
+            self.assertEqual(pyfile_getline(fp, 6),
+                             FIRST_LINE.encode()[:6])
+
+    def test_pyfile_writestring(self):
+        # Test PyFile_WriteString(str, file): call file.write(str)
+        writestr = _testlimitedcapi.pyfile_writestring
+
+        with io.StringIO() as fp:
+            self.assertEqual(writestr("a\xe9\u20ac\U0010FFFF".encode(), fp), 0)
+            with self.assertRaises(UnicodeDecodeError):
+                writestr(b"\xff", fp)
+            with self.assertRaises(UnicodeDecodeError):
+                writestr("\udc80".encode("utf-8", "surrogatepass"), fp)
+
+            text = fp.getvalue()
+            self.assertEqual(text, "a\xe9\u20ac\U0010FFFF")
+
+        with self.assertRaises(SystemError):
+            writestr(b"abc", NULL)
+
+    def test_pyfile_writeobject(self):
+        # Test PyFile_WriteObject(obj, file, flags):
+        # - Call file.write(str(obj)) if flags equals Py_PRINT_RAW.
+        # - Call file.write(repr(obj)) otherwise.
+        writeobject = _testlimitedcapi.pyfile_writeobject
+        Py_PRINT_RAW = 1
+
+        with io.StringIO() as fp:
+            # Test flags=Py_PRINT_RAW
+            self.assertEqual(writeobject("raw", fp, Py_PRINT_RAW), 0)
+            writeobject(NULL, fp, Py_PRINT_RAW)
+
+            # Test flags=0
+            self.assertEqual(writeobject("repr", fp, 0), 0)
+            writeobject(NULL, fp, 0)
+
+            text = fp.getvalue()
+            self.assertEqual(text, "raw<NULL>'repr'<NULL>")
+
+        # invalid file type
+        for invalid_file in (123, "abc", object()):
+            with self.subTest(file=invalid_file):
+                with self.assertRaises(AttributeError):
+                    writeobject("abc", invalid_file, Py_PRINT_RAW)
+
+        with self.assertRaises(TypeError):
+            writeobject("abc", NULL, 0)
+
+    def test_pyobject_asfiledescriptor(self):
+        # Test PyObject_AsFileDescriptor(obj):
+        # - Return obj if obj is an integer.
+        # - Return obj.fileno() otherwise.
+        # File descriptor must be >= 0.
+        asfd = _testlimitedcapi.pyobject_asfiledescriptor
+
+        self.assertEqual(asfd(123), 123)
+        self.assertEqual(asfd(0), 0)
+
+        with open(__file__, "rb") as fp:
+            self.assertEqual(asfd(fp), fp.fileno())
+
+        # bool emits RuntimeWarning
+        msg = r"bool is used as a file descriptor"
+        with warnings_helper.check_warnings((msg, RuntimeWarning)):
+            self.assertEqual(asfd(True), 1)
+
+        class FakeFile:
+            def __init__(self, fd):
+                self.fd = fd
+            def fileno(self):
+                return self.fd
+
+        # file descriptor must be positive
+        with self.assertRaises(ValueError):
+            asfd(-1)
+        with self.assertRaises(ValueError):
+            asfd(FakeFile(-1))
+
+        # fileno() result must be an integer
+        with self.assertRaises(TypeError):
+            asfd(FakeFile("text"))
+
+        # unsupported types
+        for obj in ("string", ["list"], object()):
+            with self.subTest(obj=obj):
+                with self.assertRaises(TypeError):
+                    asfd(obj)
+
+        # CRASHES asfd(NULL)
+
+    def test_pyfile_newstdprinter(self):
+        # Test PyFile_NewStdPrinter()
+        pyfile_newstdprinter = _testcapi.pyfile_newstdprinter
+
+        file = pyfile_newstdprinter(STDOUT_FD)
+        self.assertEqual(file.closed, False)
+        self.assertIsNone(file.encoding)
+        self.assertEqual(file.mode, "w")
+
+        self.assertEqual(file.fileno(), STDOUT_FD)
+        self.assertEqual(file.isatty(), os.isatty(STDOUT_FD))
+
+        # flush() is a no-op
+        self.assertIsNone(file.flush())
+
+        # close() is a no-op
+        self.assertIsNone(file.close())
+        self.assertEqual(file.closed, False)
+
+        support.check_disallow_instantiation(self, type(file))
+
+    def test_pyfile_newstdprinter_write(self):
+        # Test the write() method of PyFile_NewStdPrinter()
+        pyfile_newstdprinter = _testcapi.pyfile_newstdprinter
+
+        filename = os_helper.TESTFN
+        self.addCleanup(os_helper.unlink, filename)
+
+        try:
+            old_stdout = os.dup(STDOUT_FD)
+        except OSError as exc:
+            # os.dup(STDOUT_FD) is not supported on WASI
+            self.skipTest(f"os.dup() failed with {exc!r}")
+
+        try:
+            with open(filename, "wb") as fp:
+                # PyFile_NewStdPrinter() only accepts fileno(stdout)
+                # or fileno(stderr) file descriptor.
+                fd = fp.fileno()
+                os.dup2(fd, STDOUT_FD)
+
+                file = pyfile_newstdprinter(STDOUT_FD)
+                self.assertEqual(file.write("text"), 4)
+                # The surrogate character is encoded with
+                # the "surrogateescape" error handler
+                self.assertEqual(file.write("[\udc80]"), 8)
+        finally:
+            os.dup2(old_stdout, STDOUT_FD)
+            os.close(old_stdout)
+
+        with open(filename, "r") as fp:
+            self.assertEqual(fp.read(), "text[\\udc80]")
+
+    # TODO: Test Py_UniversalNewlineFgets()
+
+    # PyFile_SetOpenCodeHook() and PyFile_OpenCode() are tested by
+    # test_embed.test_open_code_hook()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_getargs.py b/Lib/test/test_capi/test_getargs.py
index e710400f75c235..703d228f92e713 100644
--- a/Lib/test/test_capi/test_getargs.py
+++ b/Lib/test/test_capi/test_getargs.py
@@ -4,11 +4,18 @@
 import sys
 from test import support
 from test.support import import_helper
+from test.support import script_helper
 from test.support import warnings_helper
+from test.support.testcase import FloatsAreIdenticalMixin
 # Skip this test if the _testcapi module isn't available.
 _testcapi = import_helper.import_module('_testcapi')
 from _testcapi import getargs_keywords, getargs_keyword_only
 
+try:
+    import _testinternalcapi
+except ImportError:
+    _testinternalcapi = NULL
+
 # > How about the following counterproposal. This also changes some of
 # > the other format codes to be a little more regular.
 # >
@@ -430,11 +437,7 @@ def test_K(self):
         self.assertEqual(VERY_LARGE & ULLONG_MAX, getargs_K(VERY_LARGE))
 
 
-class Float_TestCase(unittest.TestCase):
-    def assertEqualWithSign(self, actual, expected):
-        self.assertEqual(actual, expected)
-        self.assertEqual(math.copysign(1, actual), math.copysign(1, expected))
-
+class Float_TestCase(unittest.TestCase, FloatsAreIdenticalMixin):
     def test_f(self):
         from _testcapi import getargs_f
         self.assertEqual(getargs_f(4.25), 4.25)
@@ -456,10 +459,10 @@ def test_f(self):
             self.assertEqual(getargs_f(DBL_MAX), INF)
             self.assertEqual(getargs_f(-DBL_MAX), -INF)
         if FLT_MIN > DBL_MIN:
-            self.assertEqualWithSign(getargs_f(DBL_MIN), 0.0)
-            self.assertEqualWithSign(getargs_f(-DBL_MIN), -0.0)
-        self.assertEqualWithSign(getargs_f(0.0), 0.0)
-        self.assertEqualWithSign(getargs_f(-0.0), -0.0)
+            self.assertFloatsAreIdentical(getargs_f(DBL_MIN), 0.0)
+            self.assertFloatsAreIdentical(getargs_f(-DBL_MIN), -0.0)
+        self.assertFloatsAreIdentical(getargs_f(0.0), 0.0)
+        self.assertFloatsAreIdentical(getargs_f(-0.0), -0.0)
         r = getargs_f(NAN)
         self.assertNotEqual(r, r)
 
@@ -488,8 +491,8 @@ def test_d(self):
             self.assertEqual(getargs_d(x), x)
         self.assertRaises(OverflowError, getargs_d, 1<<DBL_MAX_EXP)
         self.assertRaises(OverflowError, getargs_d, -1<<DBL_MAX_EXP)
-        self.assertEqualWithSign(getargs_d(0.0), 0.0)
-        self.assertEqualWithSign(getargs_d(-0.0), -0.0)
+        self.assertFloatsAreIdentical(getargs_d(0.0), 0.0)
+        self.assertFloatsAreIdentical(getargs_d(-0.0), -0.0)
         r = getargs_d(NAN)
         self.assertNotEqual(r, r)
 
@@ -513,10 +516,10 @@ def test_D(self):
             self.assertEqual(getargs_D(c), c)
             c = complex(1.0, x)
             self.assertEqual(getargs_D(c), c)
-        self.assertEqualWithSign(getargs_D(complex(0.0, 1.0)).real, 0.0)
-        self.assertEqualWithSign(getargs_D(complex(-0.0, 1.0)).real, -0.0)
-        self.assertEqualWithSign(getargs_D(complex(1.0, 0.0)).imag, 0.0)
-        self.assertEqualWithSign(getargs_D(complex(1.0, -0.0)).imag, -0.0)
+        self.assertFloatsAreIdentical(getargs_D(complex(0.0, 1.0)).real, 0.0)
+        self.assertFloatsAreIdentical(getargs_D(complex(-0.0, 1.0)).real, -0.0)
+        self.assertFloatsAreIdentical(getargs_D(complex(1.0, 0.0)).imag, 0.0)
+        self.assertFloatsAreIdentical(getargs_D(complex(1.0, -0.0)).imag, -0.0)
 
 
 class Paradox:
@@ -1346,6 +1349,33 @@ def test_nested_tuple(self):
                     "argument 1 must be sequence of length 1, not 0"):
                 parse(((),), {}, '(' + f + ')', ['a'])
 
+    @unittest.skipIf(_testinternalcapi is None, 'needs _testinternalcapi')
+    def test_gh_119213(self):
+        rc, out, err = script_helper.assert_python_ok("-c", """if True:
+            from test import support
+            script = '''if True:
+                import _testinternalcapi
+                _testinternalcapi.gh_119213_getargs(spam='eggs')
+                '''
+            config = dict(
+                allow_fork=False,
+                allow_exec=False,
+                allow_threads=True,
+                allow_daemon_threads=False,
+                use_main_obmalloc=False,
+                gil=2,
+                check_multi_interp_extensions=True,
+            )
+            rc = support.run_in_subinterp_with_config(script, **config)
+            assert rc == 0
+
+            # The crash is different if the interpreter was not destroyed first.
+            #interpid = _testinternalcapi.create_interpreter()
+            #rc = _testinternalcapi.exec_interpreter(interpid, script)
+            #assert rc == 0
+            """)
+        self.assertEqual(rc, 0)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/test_hash.py b/Lib/test/test_capi/test_hash.py
index 8436da7c32df10..cb2b3635f01328 100644
--- a/Lib/test/test_capi/test_hash.py
+++ b/Lib/test/test_capi/test_hash.py
@@ -77,3 +77,7 @@ def python_hash_pointer(x):
         # Py_HashPointer((void*)(uintptr_t)-1) doesn't return -1 but -2
         VOID_P_MAX = -1 & (2 ** (8 * SIZEOF_VOID_P) - 1)
         self.assertEqual(hash_pointer(VOID_P_MAX), -2)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_import.py b/Lib/test/test_capi/test_import.py
new file mode 100644
index 00000000000000..3abd1cd7470111
--- /dev/null
+++ b/Lib/test/test_capi/test_import.py
@@ -0,0 +1,322 @@
+import importlib.util
+import os.path
+import sys
+import types
+import unittest
+from test.support import os_helper
+from test.support import import_helper
+from test.support.warnings_helper import check_warnings
+
+_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
+NULL = None
+
+
+class ImportTests(unittest.TestCase):
+    def test_getmagicnumber(self):
+        # Test PyImport_GetMagicNumber()
+        magic = _testlimitedcapi.PyImport_GetMagicNumber()
+        self.assertEqual(magic,
+                         int.from_bytes(importlib.util.MAGIC_NUMBER, 'little'))
+
+    def test_getmagictag(self):
+        # Test PyImport_GetMagicTag()
+        tag = _testlimitedcapi.PyImport_GetMagicTag()
+        self.assertEqual(tag, sys.implementation.cache_tag)
+
+    def test_getmoduledict(self):
+        # Test PyImport_GetModuleDict()
+        modules = _testlimitedcapi.PyImport_GetModuleDict()
+        self.assertIs(modules, sys.modules)
+
+    def check_import_loaded_module(self, import_module):
+        for name in ('os', 'sys', 'test', 'unittest'):
+            with self.subTest(name=name):
+                self.assertIn(name, sys.modules)
+                old_module = sys.modules[name]
+                module = import_module(name)
+                self.assertIsInstance(module, types.ModuleType)
+                self.assertIs(module, old_module)
+
+    def check_import_fresh_module(self, import_module):
+        old_modules = dict(sys.modules)
+        try:
+            for name in ('colorsys', 'math'):
+                with self.subTest(name=name):
+                    sys.modules.pop(name, None)
+                    module = import_module(name)
+                    self.assertIsInstance(module, types.ModuleType)
+                    self.assertIs(module, sys.modules[name])
+                    self.assertEqual(module.__name__, name)
+        finally:
+            sys.modules.clear()
+            sys.modules.update(old_modules)
+
+    def test_getmodule(self):
+        # Test PyImport_GetModule()
+        getmodule = _testlimitedcapi.PyImport_GetModule
+        self.check_import_loaded_module(getmodule)
+
+        nonexistent = 'nonexistent'
+        self.assertNotIn(nonexistent, sys.modules)
+        self.assertIs(getmodule(nonexistent), KeyError)
+        self.assertIs(getmodule(''), KeyError)
+        self.assertIs(getmodule(object()), KeyError)
+
+        self.assertRaises(TypeError, getmodule, [])  # unhashable
+        # CRASHES getmodule(NULL)
+
+    def check_addmodule(self, add_module, accept_nonstr=False):
+        # create a new module
+        names = ['nonexistent']
+        if accept_nonstr:
+            names.append(b'\xff')  # non-UTF-8
+        for name in names:
+            with self.subTest(name=name):
+                self.assertNotIn(name, sys.modules)
+                try:
+                    module = add_module(name)
+                    self.assertIsInstance(module, types.ModuleType)
+                    self.assertEqual(module.__name__, name)
+                    self.assertIs(module, sys.modules[name])
+                finally:
+                    sys.modules.pop(name, None)
+
+        # get an existing module
+        self.check_import_loaded_module(add_module)
+
+    def test_addmoduleobject(self):
+        # Test PyImport_AddModuleObject()
+        addmoduleobject = _testlimitedcapi.PyImport_AddModuleObject
+        self.check_addmodule(addmoduleobject, accept_nonstr=True)
+
+        self.assertRaises(TypeError, addmoduleobject, [])  # unhashable
+        # CRASHES addmoduleobject(NULL)
+
+    def test_addmodule(self):
+        # Test PyImport_AddModule()
+        addmodule = _testlimitedcapi.PyImport_AddModule
+        self.check_addmodule(addmodule)
+
+        self.assertRaises(UnicodeDecodeError, addmodule, b'\xff')
+        # CRASHES addmodule(NULL)
+
+    def test_addmoduleref(self):
+        # Test PyImport_AddModuleRef()
+        addmoduleref = _testlimitedcapi.PyImport_AddModuleRef
+        self.check_addmodule(addmoduleref)
+
+        self.assertRaises(UnicodeDecodeError, addmoduleref, b'\xff')
+        # CRASHES addmoduleref(NULL)
+
+    def check_import_func(self, import_module):
+        self.check_import_loaded_module(import_module)
+        self.check_import_fresh_module(import_module)
+        self.assertRaises(ModuleNotFoundError, import_module, 'nonexistent')
+        self.assertRaises(ValueError, import_module, '')
+
+    def test_import(self):
+        # Test PyImport_Import()
+        import_ = _testlimitedcapi.PyImport_Import
+        self.check_import_func(import_)
+
+        self.assertRaises(TypeError, import_, b'os')
+        self.assertRaises(SystemError, import_, NULL)
+
+    def test_importmodule(self):
+        # Test PyImport_ImportModule()
+        importmodule = _testlimitedcapi.PyImport_ImportModule
+        self.check_import_func(importmodule)
+
+        self.assertRaises(UnicodeDecodeError, importmodule, b'\xff')
+        # CRASHES importmodule(NULL)
+
+    def test_importmodulenoblock(self):
+        # Test deprecated PyImport_ImportModuleNoBlock()
+        importmodulenoblock = _testlimitedcapi.PyImport_ImportModuleNoBlock
+        with check_warnings(('', DeprecationWarning)):
+            self.check_import_func(importmodulenoblock)
+            self.assertRaises(UnicodeDecodeError, importmodulenoblock, b'\xff')
+
+        # CRASHES importmodulenoblock(NULL)
+
+    def check_frozen_import(self, import_frozen_module):
+        # Importing a frozen module executes its code, so start by unloading
+        # the module to execute the code in a new (temporary) module.
+        old_zipimport = sys.modules.pop('zipimport')
+        try:
+            self.assertEqual(import_frozen_module('zipimport'), 1)
+
+            # import zipimport again
+            self.assertEqual(import_frozen_module('zipimport'), 1)
+        finally:
+            sys.modules['zipimport'] = old_zipimport
+
+        # not a frozen module
+        self.assertEqual(import_frozen_module('sys'), 0)
+        self.assertEqual(import_frozen_module('nonexistent'), 0)
+        self.assertEqual(import_frozen_module(''), 0)
+
+    def test_importfrozenmodule(self):
+        # Test PyImport_ImportFrozenModule()
+        importfrozenmodule = _testlimitedcapi.PyImport_ImportFrozenModule
+        self.check_frozen_import(importfrozenmodule)
+
+        self.assertRaises(UnicodeDecodeError, importfrozenmodule, b'\xff')
+        # CRASHES importfrozenmodule(NULL)
+
+    def test_importfrozenmoduleobject(self):
+        # Test PyImport_ImportFrozenModuleObject()
+        importfrozenmoduleobject = _testlimitedcapi.PyImport_ImportFrozenModuleObject
+        self.check_frozen_import(importfrozenmoduleobject)
+        self.assertEqual(importfrozenmoduleobject(b'zipimport'), 0)
+        self.assertEqual(importfrozenmoduleobject(NULL), 0)
+
+    def test_importmoduleex(self):
+        # Test PyImport_ImportModuleEx()
+        importmoduleex = _testlimitedcapi.PyImport_ImportModuleEx
+        self.check_import_func(lambda name: importmoduleex(name, NULL, NULL, NULL))
+
+        self.assertRaises(ModuleNotFoundError, importmoduleex, 'nonexistent', NULL, NULL, NULL)
+        self.assertRaises(ValueError, importmoduleex, '', NULL, NULL, NULL)
+        self.assertRaises(UnicodeDecodeError, importmoduleex, b'\xff', NULL, NULL, NULL)
+        # CRASHES importmoduleex(NULL, NULL, NULL, NULL)
+
+    def check_importmodulelevel(self, importmodulelevel):
+        self.check_import_func(lambda name: importmodulelevel(name, NULL, NULL, NULL, 0))
+
+        self.assertRaises(ModuleNotFoundError, importmodulelevel, 'nonexistent', NULL, NULL, NULL, 0)
+        self.assertRaises(ValueError, importmodulelevel, '', NULL, NULL, NULL, 0)
+
+        if __package__:
+            self.assertIs(importmodulelevel('test_import', globals(), NULL, NULL, 1),
+                          sys.modules['test.test_capi.test_import'])
+            self.assertIs(importmodulelevel('test_capi', globals(), NULL, NULL, 2),
+                          sys.modules['test.test_capi'])
+        self.assertRaises(ValueError, importmodulelevel, 'os', NULL, NULL, NULL, -1)
+        with self.assertWarns(ImportWarning):
+            self.assertRaises(KeyError, importmodulelevel, 'test_import', {}, NULL, NULL, 1)
+        self.assertRaises(TypeError, importmodulelevel, 'test_import', [], NULL, NULL, 1)
+
+    def test_importmodulelevel(self):
+        # Test PyImport_ImportModuleLevel()
+        importmodulelevel = _testlimitedcapi.PyImport_ImportModuleLevel
+        self.check_importmodulelevel(importmodulelevel)
+
+        self.assertRaises(UnicodeDecodeError, importmodulelevel, b'\xff', NULL, NULL, NULL, 0)
+        # CRASHES importmodulelevel(NULL, NULL, NULL, NULL, 0)
+
+    def test_importmodulelevelobject(self):
+        # Test PyImport_ImportModuleLevelObject()
+        importmodulelevel = _testlimitedcapi.PyImport_ImportModuleLevelObject
+        self.check_importmodulelevel(importmodulelevel)
+
+        self.assertRaises(TypeError, importmodulelevel, b'os', NULL, NULL, NULL, 0)
+        self.assertRaises(ValueError, importmodulelevel, NULL, NULL, NULL, NULL, 0)
+
+    def check_executecodemodule(self, execute_code, *args):
+        name = 'test_import_executecode'
+        try:
+            # Create a temporary module where the code will be executed
+            self.assertNotIn(name, sys.modules)
+            module = _testlimitedcapi.PyImport_AddModuleRef(name)
+            self.assertFalse(hasattr(module, 'attr'))
+
+            # Execute the code
+            code = compile('attr = 1', '<test>', 'exec')
+            module2 = execute_code(name, code, *args)
+            self.assertIs(module2, module)
+
+            # Check the function side effects
+            self.assertEqual(module.attr, 1)
+        finally:
+            sys.modules.pop(name, None)
+        return module.__spec__.origin
+
+    def test_executecodemodule(self):
+        # Test PyImport_ExecCodeModule()
+        execcodemodule = _testlimitedcapi.PyImport_ExecCodeModule
+        self.check_executecodemodule(execcodemodule)
+
+        code = compile('attr = 1', '<test>', 'exec')
+        self.assertRaises(UnicodeDecodeError, execcodemodule, b'\xff', code)
+        # CRASHES execcodemodule(NULL, code)
+        # CRASHES execcodemodule(name, NULL)
+
+    def test_executecodemoduleex(self):
+        # Test PyImport_ExecCodeModuleEx()
+        execcodemoduleex = _testlimitedcapi.PyImport_ExecCodeModuleEx
+
+        # Test NULL path (it should not crash)
+        self.check_executecodemodule(execcodemoduleex, NULL)
+
+        # Test non-NULL path
+        pathname = b'pathname'
+        origin = self.check_executecodemodule(execcodemoduleex, pathname)
+        self.assertEqual(origin, os.path.abspath(os.fsdecode(pathname)))
+
+        pathname = os_helper.TESTFN_UNDECODABLE
+        if pathname:
+            origin = self.check_executecodemodule(execcodemoduleex, pathname)
+            self.assertEqual(origin, os.path.abspath(os.fsdecode(pathname)))
+
+        code = compile('attr = 1', '<test>', 'exec')
+        self.assertRaises(UnicodeDecodeError, execcodemoduleex, b'\xff', code, NULL)
+        # CRASHES execcodemoduleex(NULL, code, NULL)
+        # CRASHES execcodemoduleex(name, NULL, NULL)
+
+    def check_executecode_pathnames(self, execute_code_func, object=False):
+        # Test non-NULL pathname and NULL cpathname
+
+        # Test NULL paths (it should not crash)
+        self.check_executecodemodule(execute_code_func, NULL, NULL)
+
+        pathname = 'pathname'
+        origin = self.check_executecodemodule(execute_code_func, pathname, NULL)
+        self.assertEqual(origin, os.path.abspath(os.fsdecode(pathname)))
+        origin = self.check_executecodemodule(execute_code_func, NULL, pathname)
+        if not object:
+            self.assertEqual(origin, os.path.abspath(os.fsdecode(pathname)))
+
+        pathname = os_helper.TESTFN_UNDECODABLE
+        if pathname:
+            if object:
+                pathname = os.fsdecode(pathname)
+            origin = self.check_executecodemodule(execute_code_func, pathname, NULL)
+            self.assertEqual(origin, os.path.abspath(os.fsdecode(pathname)))
+            self.check_executecodemodule(execute_code_func, NULL, pathname)
+
+        # Test NULL pathname and non-NULL cpathname
+        pyc_filename = importlib.util.cache_from_source(__file__)
+        py_filename = importlib.util.source_from_cache(pyc_filename)
+        origin = self.check_executecodemodule(execute_code_func, NULL, pyc_filename)
+        if not object:
+            self.assertEqual(origin, py_filename)
+
+    def test_executecodemodulewithpathnames(self):
+        # Test PyImport_ExecCodeModuleWithPathnames()
+        execute_code_func = _testlimitedcapi.PyImport_ExecCodeModuleWithPathnames
+        self.check_executecode_pathnames(execute_code_func)
+
+        code = compile('attr = 1', '<test>', 'exec')
+        self.assertRaises(UnicodeDecodeError, execute_code_func, b'\xff', code, NULL, NULL)
+        # CRASHES execute_code_func(NULL, code, NULL, NULL)
+        # CRASHES execute_code_func(name, NULL, NULL, NULL)
+
+    def test_executecodemoduleobject(self):
+        # Test PyImport_ExecCodeModuleObject()
+        execute_code_func = _testlimitedcapi.PyImport_ExecCodeModuleObject
+        self.check_executecode_pathnames(execute_code_func, object=True)
+
+        code = compile('attr = 1', '<test>', 'exec')
+        self.assertRaises(TypeError, execute_code_func, [], code, NULL, NULL)
+        # CRASHES execute_code_func(NULL, code, NULL, NULL)
+        # CRASHES execute_code_func(name, NULL, NULL, NULL)
+
+    # TODO: test PyImport_GetImporter()
+    # TODO: test PyImport_ReloadModule()
+    # TODO: test PyImport_ExtendInittab()
+    # PyImport_AppendInittab() is tested by test_embed
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_list.py b/Lib/test/test_capi/test_list.py
index 0896a971f5c727..4c64328b50b8f6 100644
--- a/Lib/test/test_capi/test_list.py
+++ b/Lib/test/test_capi/test_list.py
@@ -347,3 +347,7 @@ def test_list_extend(self):
 
         # CRASHES list_extend(NULL, [])
         # CRASHES list_extend([], NULL)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_long.py b/Lib/test/test_capi/test_long.py
index 83f894e552f983..b33edc0d0429f1 100644
--- a/Lib/test/test_capi/test_long.py
+++ b/Lib/test/test_capi/test_long.py
@@ -162,224 +162,125 @@ def test_long_fromunicodeobject(self):
         # CRASHES fromunicodeobject(NULL, 0)
         # CRASHES fromunicodeobject(NULL, 16)
 
+    def check_long_asint(self, func, min_val, max_val, *,
+                         use_index=True,
+                         mask=False,
+                         negative_value_error=OverflowError):
+        # round trip (object -> C integer -> object)
+        values = (0, 1, 1234, max_val)
+        if min_val < 0:
+            values += (-1, min_val)
+        for value in values:
+            with self.subTest(value=value):
+                self.assertEqual(func(value), value)
+                self.assertEqual(func(IntSubclass(value)), value)
+                if use_index:
+                    self.assertEqual(func(Index(value)), value)
+
+        if use_index:
+            self.assertEqual(func(MyIndexAndInt()), 10)
+        else:
+            self.assertRaises(TypeError, func, Index(42))
+            self.assertRaises(TypeError, func, MyIndexAndInt())
+
+        if mask:
+            self.assertEqual(func(min_val - 1), max_val)
+            self.assertEqual(func(max_val + 1), min_val)
+            self.assertEqual(func(-1 << 1000), 0)
+            self.assertEqual(func(1 << 1000), 0)
+        else:
+            self.assertRaises(negative_value_error, func, min_val - 1)
+            self.assertRaises(negative_value_error, func, -1 << 1000)
+            self.assertRaises(OverflowError, func, max_val + 1)
+            self.assertRaises(OverflowError, func, 1 << 1000)
+        self.assertRaises(TypeError, func, 1.0)
+        self.assertRaises(TypeError, func, b'2')
+        self.assertRaises(TypeError, func, '3')
+        self.assertRaises(SystemError, func, NULL)
+
+    def check_long_asintandoverflow(self, func, min_val, max_val):
+        # round trip (object -> C integer -> object)
+        for value in (min_val, max_val, -1, 0, 1, 1234):
+            with self.subTest(value=value):
+                self.assertEqual(func(value), (value, 0))
+                self.assertEqual(func(IntSubclass(value)), (value, 0))
+                self.assertEqual(func(Index(value)), (value, 0))
+
+        self.assertEqual(func(MyIndexAndInt()), (10, 0))
+
+        self.assertEqual(func(min_val - 1), (-1, -1))
+        self.assertEqual(func(max_val + 1), (-1, +1))
+
+        # CRASHES func(1.0)
+        # CRASHES func(NULL)
+
     def test_long_asint(self):
         # Test PyLong_AsInt()
         PyLong_AsInt = _testlimitedcapi.PyLong_AsInt
         from _testcapi import INT_MIN, INT_MAX
-
-        # round trip (object -> int -> object)
-        for value in (INT_MIN, INT_MAX, -1, 0, 1, 123):
-            with self.subTest(value=value):
-                self.assertEqual(PyLong_AsInt(value), value)
-        self.assertEqual(PyLong_AsInt(IntSubclass(42)), 42)
-        self.assertEqual(PyLong_AsInt(Index(42)), 42)
-        self.assertEqual(PyLong_AsInt(MyIndexAndInt()), 10)
-
-        # bound checking
-        self.assertRaises(OverflowError, PyLong_AsInt, INT_MIN - 1)
-        self.assertRaises(OverflowError, PyLong_AsInt, INT_MAX + 1)
-
-        # invalid type
-        self.assertRaises(TypeError, PyLong_AsInt, 1.0)
-        self.assertRaises(TypeError, PyLong_AsInt, b'2')
-        self.assertRaises(TypeError, PyLong_AsInt, '3')
-        self.assertRaises(SystemError, PyLong_AsInt, NULL)
+        self.check_long_asint(PyLong_AsInt, INT_MIN, INT_MAX)
 
     def test_long_aslong(self):
         # Test PyLong_AsLong() and PyLong_FromLong()
         aslong = _testlimitedcapi.pylong_aslong
         from _testcapi import LONG_MIN, LONG_MAX
-        # round trip (object -> long -> object)
-        for value in (LONG_MIN, LONG_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(aslong(value), value)
-
-        self.assertEqual(aslong(IntSubclass(42)), 42)
-        self.assertEqual(aslong(Index(42)), 42)
-        self.assertEqual(aslong(MyIndexAndInt()), 10)
-
-        self.assertRaises(OverflowError, aslong, LONG_MIN - 1)
-        self.assertRaises(OverflowError, aslong, LONG_MAX + 1)
-        self.assertRaises(TypeError, aslong, 1.0)
-        self.assertRaises(TypeError, aslong, b'2')
-        self.assertRaises(TypeError, aslong, '3')
-        self.assertRaises(SystemError, aslong, NULL)
+        self.check_long_asint(aslong, LONG_MIN, LONG_MAX)
 
     def test_long_aslongandoverflow(self):
         # Test PyLong_AsLongAndOverflow()
         aslongandoverflow = _testlimitedcapi.pylong_aslongandoverflow
         from _testcapi import LONG_MIN, LONG_MAX
-        # round trip (object -> long -> object)
-        for value in (LONG_MIN, LONG_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(aslongandoverflow(value), (value, 0))
-
-        self.assertEqual(aslongandoverflow(IntSubclass(42)), (42, 0))
-        self.assertEqual(aslongandoverflow(Index(42)), (42, 0))
-        self.assertEqual(aslongandoverflow(MyIndexAndInt()), (10, 0))
-
-        self.assertEqual(aslongandoverflow(LONG_MIN - 1), (-1, -1))
-        self.assertEqual(aslongandoverflow(LONG_MAX + 1), (-1, 1))
-        # CRASHES aslongandoverflow(1.0)
-        # CRASHES aslongandoverflow(NULL)
+        self.check_long_asintandoverflow(aslongandoverflow, LONG_MIN, LONG_MAX)
 
     def test_long_asunsignedlong(self):
         # Test PyLong_AsUnsignedLong() and PyLong_FromUnsignedLong()
         asunsignedlong = _testlimitedcapi.pylong_asunsignedlong
         from _testcapi import ULONG_MAX
-        # round trip (object -> unsigned long -> object)
-        for value in (ULONG_MAX, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(asunsignedlong(value), value)
-
-        self.assertEqual(asunsignedlong(IntSubclass(42)), 42)
-        self.assertRaises(TypeError, asunsignedlong, Index(42))
-        self.assertRaises(TypeError, asunsignedlong, MyIndexAndInt())
-
-        self.assertRaises(OverflowError, asunsignedlong, -1)
-        self.assertRaises(OverflowError, asunsignedlong, ULONG_MAX + 1)
-        self.assertRaises(TypeError, asunsignedlong, 1.0)
-        self.assertRaises(TypeError, asunsignedlong, b'2')
-        self.assertRaises(TypeError, asunsignedlong, '3')
-        self.assertRaises(SystemError, asunsignedlong, NULL)
+        self.check_long_asint(asunsignedlong, 0, ULONG_MAX,
+                                      use_index=False)
 
     def test_long_asunsignedlongmask(self):
         # Test PyLong_AsUnsignedLongMask()
         asunsignedlongmask = _testlimitedcapi.pylong_asunsignedlongmask
         from _testcapi import ULONG_MAX
-        # round trip (object -> unsigned long -> object)
-        for value in (ULONG_MAX, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(asunsignedlongmask(value), value)
-
-        self.assertEqual(asunsignedlongmask(IntSubclass(42)), 42)
-        self.assertEqual(asunsignedlongmask(Index(42)), 42)
-        self.assertEqual(asunsignedlongmask(MyIndexAndInt()), 10)
-
-        self.assertEqual(asunsignedlongmask(-1), ULONG_MAX)
-        self.assertEqual(asunsignedlongmask(ULONG_MAX + 1), 0)
-        self.assertRaises(TypeError, asunsignedlongmask, 1.0)
-        self.assertRaises(TypeError, asunsignedlongmask, b'2')
-        self.assertRaises(TypeError, asunsignedlongmask, '3')
-        self.assertRaises(SystemError, asunsignedlongmask, NULL)
+        self.check_long_asint(asunsignedlongmask, 0, ULONG_MAX, mask=True)
 
     def test_long_aslonglong(self):
         # Test PyLong_AsLongLong() and PyLong_FromLongLong()
         aslonglong = _testlimitedcapi.pylong_aslonglong
         from _testcapi import LLONG_MIN, LLONG_MAX
-        # round trip (object -> long long -> object)
-        for value in (LLONG_MIN, LLONG_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(aslonglong(value), value)
-
-        self.assertEqual(aslonglong(IntSubclass(42)), 42)
-        self.assertEqual(aslonglong(Index(42)), 42)
-        self.assertEqual(aslonglong(MyIndexAndInt()), 10)
-
-        self.assertRaises(OverflowError, aslonglong, LLONG_MIN - 1)
-        self.assertRaises(OverflowError, aslonglong, LLONG_MAX + 1)
-        self.assertRaises(TypeError, aslonglong, 1.0)
-        self.assertRaises(TypeError, aslonglong, b'2')
-        self.assertRaises(TypeError, aslonglong, '3')
-        self.assertRaises(SystemError, aslonglong, NULL)
+        self.check_long_asint(aslonglong, LLONG_MIN, LLONG_MAX)
 
     def test_long_aslonglongandoverflow(self):
         # Test PyLong_AsLongLongAndOverflow()
         aslonglongandoverflow = _testlimitedcapi.pylong_aslonglongandoverflow
         from _testcapi import LLONG_MIN, LLONG_MAX
-        # round trip (object -> long long -> object)
-        for value in (LLONG_MIN, LLONG_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(aslonglongandoverflow(value), (value, 0))
-
-        self.assertEqual(aslonglongandoverflow(IntSubclass(42)), (42, 0))
-        self.assertEqual(aslonglongandoverflow(Index(42)), (42, 0))
-        self.assertEqual(aslonglongandoverflow(MyIndexAndInt()), (10, 0))
-
-        self.assertEqual(aslonglongandoverflow(LLONG_MIN - 1), (-1, -1))
-        self.assertEqual(aslonglongandoverflow(LLONG_MAX + 1), (-1, 1))
-        # CRASHES aslonglongandoverflow(1.0)
-        # CRASHES aslonglongandoverflow(NULL)
+        self.check_long_asintandoverflow(aslonglongandoverflow, LLONG_MIN, LLONG_MAX)
 
     def test_long_asunsignedlonglong(self):
         # Test PyLong_AsUnsignedLongLong() and PyLong_FromUnsignedLongLong()
         asunsignedlonglong = _testlimitedcapi.pylong_asunsignedlonglong
         from _testcapi import ULLONG_MAX
-        # round trip (object -> unsigned long long -> object)
-        for value in (ULLONG_MAX, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(asunsignedlonglong(value), value)
-
-        self.assertEqual(asunsignedlonglong(IntSubclass(42)), 42)
-        self.assertRaises(TypeError, asunsignedlonglong, Index(42))
-        self.assertRaises(TypeError, asunsignedlonglong, MyIndexAndInt())
-
-        self.assertRaises(OverflowError, asunsignedlonglong, -1)
-        self.assertRaises(OverflowError, asunsignedlonglong, ULLONG_MAX + 1)
-        self.assertRaises(TypeError, asunsignedlonglong, 1.0)
-        self.assertRaises(TypeError, asunsignedlonglong, b'2')
-        self.assertRaises(TypeError, asunsignedlonglong, '3')
-        self.assertRaises(SystemError, asunsignedlonglong, NULL)
+        self.check_long_asint(asunsignedlonglong, 0, ULLONG_MAX, use_index=False)
 
     def test_long_asunsignedlonglongmask(self):
         # Test PyLong_AsUnsignedLongLongMask()
         asunsignedlonglongmask = _testlimitedcapi.pylong_asunsignedlonglongmask
         from _testcapi import ULLONG_MAX
-        # round trip (object -> unsigned long long -> object)
-        for value in (ULLONG_MAX, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(asunsignedlonglongmask(value), value)
-
-        self.assertEqual(asunsignedlonglongmask(IntSubclass(42)), 42)
-        self.assertEqual(asunsignedlonglongmask(Index(42)), 42)
-        self.assertEqual(asunsignedlonglongmask(MyIndexAndInt()), 10)
-
-        self.assertEqual(asunsignedlonglongmask(-1), ULLONG_MAX)
-        self.assertEqual(asunsignedlonglongmask(ULLONG_MAX + 1), 0)
-        self.assertRaises(TypeError, asunsignedlonglongmask, 1.0)
-        self.assertRaises(TypeError, asunsignedlonglongmask, b'2')
-        self.assertRaises(TypeError, asunsignedlonglongmask, '3')
-        self.assertRaises(SystemError, asunsignedlonglongmask, NULL)
+        self.check_long_asint(asunsignedlonglongmask, 0, ULLONG_MAX, mask=True)
 
     def test_long_as_ssize_t(self):
         # Test PyLong_AsSsize_t() and PyLong_FromSsize_t()
         as_ssize_t = _testlimitedcapi.pylong_as_ssize_t
         from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
-        # round trip (object -> Py_ssize_t -> object)
-        for value in (PY_SSIZE_T_MIN, PY_SSIZE_T_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(as_ssize_t(value), value)
-
-        self.assertEqual(as_ssize_t(IntSubclass(42)), 42)
-        self.assertRaises(TypeError, as_ssize_t, Index(42))
-        self.assertRaises(TypeError, as_ssize_t, MyIndexAndInt())
-
-        self.assertRaises(OverflowError, as_ssize_t, PY_SSIZE_T_MIN - 1)
-        self.assertRaises(OverflowError, as_ssize_t, PY_SSIZE_T_MAX + 1)
-        self.assertRaises(TypeError, as_ssize_t, 1.0)
-        self.assertRaises(TypeError, as_ssize_t, b'2')
-        self.assertRaises(TypeError, as_ssize_t, '3')
-        self.assertRaises(SystemError, as_ssize_t, NULL)
+        self.check_long_asint(as_ssize_t, PY_SSIZE_T_MIN, PY_SSIZE_T_MAX,
+                              use_index=False)
 
     def test_long_as_size_t(self):
         # Test PyLong_AsSize_t() and PyLong_FromSize_t()
         as_size_t = _testlimitedcapi.pylong_as_size_t
         from _testcapi import SIZE_MAX
-        # round trip (object -> size_t -> object)
-        for value in (SIZE_MAX, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(as_size_t(value), value)
-
-        self.assertEqual(as_size_t(IntSubclass(42)), 42)
-        self.assertRaises(TypeError, as_size_t, Index(42))
-        self.assertRaises(TypeError, as_size_t, MyIndexAndInt())
-
-        self.assertRaises(OverflowError, as_size_t, -1)
-        self.assertRaises(OverflowError, as_size_t, SIZE_MAX + 1)
-        self.assertRaises(TypeError, as_size_t, 1.0)
-        self.assertRaises(TypeError, as_size_t, b'2')
-        self.assertRaises(TypeError, as_size_t, '3')
-        self.assertRaises(SystemError, as_size_t, NULL)
+        self.check_long_asint(as_size_t, 0, SIZE_MAX, use_index=False)
 
     def test_long_asdouble(self):
         # Test PyLong_AsDouble()
@@ -431,21 +332,7 @@ def _test_long_aspid(self, aspid):
         bits = 8 * SIZEOF_PID_T
         PID_T_MIN = -2**(bits-1)
         PID_T_MAX = 2**(bits-1) - 1
-        # round trip (object -> long -> object)
-        for value in (PID_T_MIN, PID_T_MAX, -1, 0, 1, 1234):
-            with self.subTest(value=value):
-                self.assertEqual(aspid(value), value)
-
-        self.assertEqual(aspid(IntSubclass(42)), 42)
-        self.assertEqual(aspid(Index(42)), 42)
-        self.assertEqual(aspid(MyIndexAndInt()), 10)
-
-        self.assertRaises(OverflowError, aspid, PID_T_MIN - 1)
-        self.assertRaises(OverflowError, aspid, PID_T_MAX + 1)
-        self.assertRaises(TypeError, aspid, 1.0)
-        self.assertRaises(TypeError, aspid, b'2')
-        self.assertRaises(TypeError, aspid, '3')
-        self.assertRaises(SystemError, aspid, NULL)
+        self.check_long_asint(aspid, PID_T_MIN, PID_T_MAX)
 
     def test_long_aspid(self):
         self._test_long_aspid(_testcapi.pylong_aspid)
@@ -496,8 +383,9 @@ def test_long_asnativebytes(self):
                     "PyLong_AsNativeBytes(v, <unknown>, 0, -1)")
                 self.assertEqual(buffer, b"\x5a",
                     "buffer overwritten when it should not have been")
-                # Also check via the __index__ path
-                self.assertEqual(expect, asnativebytes(Index(v), buffer, 0, -1),
+                # Also check via the __index__ path.
+                # We pass Py_ASNATIVEBYTES_NATIVE_ENDIAN | ALLOW_INDEX
+                self.assertEqual(expect, asnativebytes(Index(v), buffer, 0, 3 | 16),
                     "PyLong_AsNativeBytes(Index(v), <unknown>, 0, -1)")
                 self.assertEqual(buffer, b"\x5a",
                     "buffer overwritten when it should not have been")
@@ -607,6 +495,12 @@ def test_long_asnativebytes(self):
         with self.assertRaises(ValueError):
             asnativebytes(-1, buffer, 0, 8)
 
+        # Ensure omitting Py_ASNATIVEBYTES_ALLOW_INDEX raises on __index__ value
+        with self.assertRaises(TypeError):
+            asnativebytes(Index(1), buffer, 0, -1)
+        with self.assertRaises(TypeError):
+            asnativebytes(Index(1), buffer, 0, 3)
+
         # Check a few error conditions. These are validated in code, but are
         # unspecified in docs, so if we make changes to the implementation, it's
         # fine to just update these tests rather than preserve the behaviour.
diff --git a/Lib/test/test_capi/test_misc.py b/Lib/test/test_capi/test_misc.py
index 020e8493e57c0c..f0b872627f6f93 100644
--- a/Lib/test/test_capi/test_misc.py
+++ b/Lib/test/test_capi/test_misc.py
@@ -26,7 +26,8 @@
 from test.support import threading_helper
 from test.support import warnings_helper
 from test.support import requires_limited_api
-from test.support import requires_gil_enabled, expected_failure_if_gil_disabled
+from test.support import suppress_immortalization
+from test.support import expected_failure_if_gil_disabled
 from test.support import Py_GIL_DISABLED
 from test.support.script_helper import assert_python_failure, assert_python_ok, run_python_until_end
 try:
@@ -74,6 +75,8 @@ class InstanceMethod:
     id = _testcapi.instancemethod(id)
     testfunction = _testcapi.instancemethod(testfunction)
 
+
+@support.force_not_colorized_test_class
 class CAPITest(unittest.TestCase):
 
     def test_instancemethod(self):
@@ -481,6 +484,7 @@ def test_heap_ctype_doc_and_text_signature(self):
     def test_null_type_doc(self):
         self.assertEqual(_testcapi.NullTpDocType.__doc__, None)
 
+    @suppress_immortalization()
     def test_subclass_of_heap_gc_ctype_with_tpdealloc_decrefs_once(self):
         class HeapGcCTypeSubclass(_testcapi.HeapGcCType):
             def __init__(self):
@@ -498,6 +502,7 @@ def __init__(self):
         del subclass_instance
         self.assertEqual(type_refcnt - 1, sys.getrefcount(HeapGcCTypeSubclass))
 
+    @suppress_immortalization()
     def test_subclass_of_heap_gc_ctype_with_del_modifying_dunder_class_only_decrefs_once(self):
         class A(_testcapi.HeapGcCType):
             def __init__(self):
@@ -889,36 +894,6 @@ def __init__(self):
         _testcapi.clear_managed_dict(c)
         self.assertEqual(c.__dict__, {})
 
-    def test_eval_get_func_name(self):
-        def function_example(): ...
-
-        class A:
-            def method_example(self): ...
-
-        self.assertEqual(_testcapi.eval_get_func_name(function_example),
-                         "function_example")
-        self.assertEqual(_testcapi.eval_get_func_name(A.method_example),
-                         "method_example")
-        self.assertEqual(_testcapi.eval_get_func_name(A().method_example),
-                         "method_example")
-        self.assertEqual(_testcapi.eval_get_func_name(sum), "sum")  # c function
-        self.assertEqual(_testcapi.eval_get_func_name(A), "type")
-
-    def test_eval_get_func_desc(self):
-        def function_example(): ...
-
-        class A:
-            def method_example(self): ...
-
-        self.assertEqual(_testcapi.eval_get_func_desc(function_example),
-                         "()")
-        self.assertEqual(_testcapi.eval_get_func_desc(A.method_example),
-                         "()")
-        self.assertEqual(_testcapi.eval_get_func_desc(A().method_example),
-                         "()")
-        self.assertEqual(_testcapi.eval_get_func_desc(sum), "()")  # c function
-        self.assertEqual(_testcapi.eval_get_func_desc(A), " object")
-
     def test_function_get_code(self):
         import types
 
@@ -2885,6 +2860,22 @@ def callback():
         t.start()
         t.join()
 
+    @threading_helper.reap_threads
+    @threading_helper.requires_working_threading()
+    def test_thread_gilstate_in_clear(self):
+        # See https://github.com/python/cpython/issues/119585
+        class C:
+            def __del__(self):
+                _testcapi.gilstate_ensure_release()
+
+        # Thread-local variables are destroyed in `PyThreadState_Clear()`.
+        local_var = threading.local()
+
+        def callback():
+            local_var.x = C()
+
+        _testcapi._test_thread_state(callback)
+
     @threading_helper.reap_threads
     @threading_helper.requires_working_threading()
     def test_gilstate_ensure_no_deadlock(self):
diff --git a/Lib/test/test_capi/test_number.py b/Lib/test/test_capi/test_number.py
new file mode 100644
index 00000000000000..3c1f0f248c37cb
--- /dev/null
+++ b/Lib/test/test_capi/test_number.py
@@ -0,0 +1,335 @@
+import itertools
+import operator
+import sys
+import unittest
+import warnings
+
+from test.support import cpython_only, import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+from _testcapi import PY_SSIZE_T_MAX, PY_SSIZE_T_MIN
+
+try:
+    from _testbuffer import ndarray
+except ImportError:
+    ndarray = None
+
+NULL = None
+
+class BadDescr:
+    def __get__(self, obj, objtype=None):
+        raise RuntimeError
+
+class WithDunder:
+    def _meth(self, *args):
+        if self.val:
+            return self.val
+        if self.exc:
+            raise self.exc
+    @classmethod
+    def with_val(cls, val):
+        obj = super().__new__(cls)
+        obj.val = val
+        obj.exc = None
+        setattr(cls, cls.methname, cls._meth)
+        return obj
+
+    @classmethod
+    def with_exc(cls, exc):
+        obj = super().__new__(cls)
+        obj.val = None
+        obj.exc = exc
+        setattr(cls, cls.methname, cls._meth)
+        return obj
+
+class HasBadAttr:
+    def __new__(cls):
+        obj = super().__new__(cls)
+        setattr(cls, cls.methname, BadDescr())
+        return obj
+
+
+class IndexLike(WithDunder):
+    methname = '__index__'
+
+class IntLike(WithDunder):
+    methname = '__int__'
+
+class FloatLike(WithDunder):
+    methname = '__float__'
+
+
+def subclassof(base):
+    return type(base.__name__ + 'Subclass', (base,), {})
+
+
+class SomeError(Exception):
+    pass
+
+class OtherError(Exception):
+    pass
+
+
+class CAPITest(unittest.TestCase):
+    def test_check(self):
+        # Test PyNumber_Check()
+        check = _testcapi.number_check
+
+        self.assertTrue(check(1))
+        self.assertTrue(check(IndexLike.with_val(1)))
+        self.assertTrue(check(IntLike.with_val(99)))
+        self.assertTrue(check(0.5))
+        self.assertTrue(check(FloatLike.with_val(4.25)))
+        self.assertTrue(check(1+2j))
+
+        self.assertFalse(check([]))
+        self.assertFalse(check("abc"))
+        self.assertFalse(check(object()))
+        self.assertFalse(check(NULL))
+
+    def test_unary_ops(self):
+        methmap = {'__neg__': _testcapi.number_negative,   # PyNumber_Negative()
+                   '__pos__': _testcapi.number_positive,   # PyNumber_Positive()
+                   '__abs__': _testcapi.number_absolute,   # PyNumber_Absolute()
+                   '__invert__': _testcapi.number_invert}  # PyNumber_Invert()
+
+        for name, func in methmap.items():
+            # Generic object, has no tp_as_number structure
+            self.assertRaises(TypeError, func, object())
+
+            # C-API function accepts NULL
+            self.assertRaises(SystemError, func, NULL)
+
+            # Behave as corresponding unary operation
+            op = getattr(operator, name)
+            for x in [0, 42, -1, 3.14, 1+2j]:
+                try:
+                    op(x)
+                except TypeError:
+                    self.assertRaises(TypeError, func, x)
+                else:
+                    self.assertEqual(func(x), op(x))
+
+    def test_binary_ops(self):
+        methmap = {'__add__': _testcapi.number_add,   # PyNumber_Add()
+                   '__sub__': _testcapi.number_subtract,  # PyNumber_Subtract()
+                   '__mul__': _testcapi.number_multiply,  # PyNumber_Multiply()
+                   '__matmul__': _testcapi.number_matrixmultiply,  # PyNumber_MatrixMultiply()
+                   '__floordiv__': _testcapi.number_floordivide,  # PyNumber_FloorDivide()
+                   '__truediv__': _testcapi.number_truedivide,  # PyNumber_TrueDivide()
+                   '__mod__': _testcapi.number_remainder,  # PyNumber_Remainder()
+                   '__divmod__': _testcapi.number_divmod,  # PyNumber_Divmod()
+                   '__lshift__': _testcapi.number_lshift,  # PyNumber_Lshift()
+                   '__rshift__': _testcapi.number_rshift,  # PyNumber_Rshift()
+                   '__and__': _testcapi.number_and,  # PyNumber_And()
+                   '__xor__': _testcapi.number_xor,  # PyNumber_Xor()
+                   '__or__': _testcapi.number_or,  # PyNumber_Or()
+                   '__pow__': _testcapi.number_power,  # PyNumber_Power()
+                   '__iadd__': _testcapi.number_inplaceadd,   # PyNumber_InPlaceAdd()
+                   '__isub__': _testcapi.number_inplacesubtract,  # PyNumber_InPlaceSubtract()
+                   '__imul__': _testcapi.number_inplacemultiply,  # PyNumber_InPlaceMultiply()
+                   '__imatmul__': _testcapi.number_inplacematrixmultiply,  # PyNumber_InPlaceMatrixMultiply()
+                   '__ifloordiv__': _testcapi.number_inplacefloordivide,  # PyNumber_InPlaceFloorDivide()
+                   '__itruediv__': _testcapi.number_inplacetruedivide,  # PyNumber_InPlaceTrueDivide()
+                   '__imod__': _testcapi.number_inplaceremainder,  # PyNumber_InPlaceRemainder()
+                   '__ilshift__': _testcapi.number_inplacelshift,  # PyNumber_InPlaceLshift()
+                   '__irshift__': _testcapi.number_inplacershift,  # PyNumber_InPlaceRshift()
+                   '__iand__': _testcapi.number_inplaceand,  # PyNumber_InPlaceAnd()
+                   '__ixor__': _testcapi.number_inplacexor,  # PyNumber_InPlaceXor()
+                   '__ior__': _testcapi.number_inplaceor,  # PyNumber_InPlaceOr()
+                   '__ipow__': _testcapi.number_inplacepower,  # PyNumber_InPlacePower()
+                   }
+
+        for name, func in methmap.items():
+            cases = [0, 42, 3.14, -1, 123, 1+2j]
+
+            # Generic object, has no tp_as_number structure
+            for x in cases:
+                self.assertRaises(TypeError, func, object(), x)
+                self.assertRaises(TypeError, func, x, object())
+
+            # Behave as corresponding binary operation
+            op = getattr(operator, name, divmod)
+            for x, y in itertools.combinations(cases, 2):
+                try:
+                    op(x, y)
+                except (TypeError, ValueError, ZeroDivisionError) as exc:
+                    self.assertRaises(exc.__class__, func, x, y)
+                else:
+                    self.assertEqual(func(x, y), op(x, y))
+
+            # CRASHES func(NULL, object())
+            # CRASHES func(object(), NULL)
+
+    @unittest.skipIf(ndarray is None, "needs _testbuffer")
+    def test_misc_add(self):
+        # PyNumber_Add(), PyNumber_InPlaceAdd()
+        add = _testcapi.number_add
+        inplaceadd = _testcapi.number_inplaceadd
+
+        # test sq_concat/sq_inplace_concat slots
+        a, b, r = [1, 2], [3, 4], [1, 2, 3, 4]
+        self.assertEqual(add(a, b), r)
+        self.assertEqual(a, [1, 2])
+        self.assertRaises(TypeError, add, ndarray([1], (1,)), 2)
+        a, b, r = [1, 2], [3, 4], [1, 2, 3, 4]
+        self.assertEqual(inplaceadd(a, b), r)
+        self.assertEqual(a, r)
+        self.assertRaises(TypeError, inplaceadd, ndarray([1], (1,)), 2)
+
+    @unittest.skipIf(ndarray is None, "needs _testbuffer")
+    def test_misc_multiply(self):
+        # PyNumber_Multiply(), PyNumber_InPlaceMultiply()
+        multiply = _testcapi.number_multiply
+        inplacemultiply = _testcapi.number_inplacemultiply
+
+        # test sq_repeat/sq_inplace_repeat slots
+        a, b, r = [1], 2, [1, 1]
+        self.assertEqual(multiply(a, b), r)
+        self.assertEqual((a, b), ([1], 2))
+        self.assertEqual(multiply(b, a), r)
+        self.assertEqual((a, b), ([1], 2))
+        self.assertEqual(multiply([1], -1), [])
+        self.assertRaises(TypeError, multiply, ndarray([1], (1,)), 2)
+        self.assertRaises(TypeError, multiply, [1], 0.5)
+        self.assertRaises(OverflowError, multiply, [1], PY_SSIZE_T_MAX + 1)
+        self.assertRaises(MemoryError, multiply, [1, 2], PY_SSIZE_T_MAX//2 + 1)
+        a, b, r = [1], 2, [1, 1]
+        self.assertEqual(inplacemultiply(a, b), r)
+        self.assertEqual((a, b), (r, 2))
+        a = [1]
+        self.assertEqual(inplacemultiply(b, a), r)
+        self.assertEqual((a, b), ([1], 2))
+        self.assertRaises(TypeError, inplacemultiply, ndarray([1], (1,)), 2)
+        self.assertRaises(OverflowError, inplacemultiply, [1], PY_SSIZE_T_MAX + 1)
+        self.assertRaises(MemoryError, inplacemultiply, [1, 2], PY_SSIZE_T_MAX//2 + 1)
+
+    def test_misc_power(self):
+        # PyNumber_Power()
+        power = _testcapi.number_power
+
+        class HasPow(WithDunder):
+            methname = '__pow__'
+
+        # ternary op
+        self.assertEqual(power(4, 11, 5), pow(4, 11, 5))
+        self.assertRaises(TypeError, power, 4, 11, 1.25)
+        self.assertRaises(TypeError, power, 4, 11, HasPow.with_val(NotImplemented))
+        self.assertRaises(TypeError, power, 4, 11, object())
+
+    @cpython_only
+    def test_rshift_print(self):
+        # This tests correct syntax hint for py2 redirection (>>).
+        rshift = _testcapi.number_rshift
+
+        with self.assertRaises(TypeError) as context:
+            rshift(print, 42)
+        self.assertIn('Did you mean "print(<message>, '
+                      'file=<output_stream>)"?', str(context.exception))
+        with self.assertRaises(TypeError) as context:
+            rshift(max, sys.stderr)
+        self.assertNotIn('Did you mean ', str(context.exception))
+        with self.assertRaises(TypeError) as context:
+            rshift(1, "spam")
+
+    def test_long(self):
+        # Test PyNumber_Long()
+        long = _testcapi.number_long
+
+        self.assertEqual(long(42), 42)
+        self.assertEqual(long(1.25), 1)
+        self.assertEqual(long("42"), 42)
+        self.assertEqual(long(b"42"), 42)
+        self.assertEqual(long(bytearray(b"42")), 42)
+        self.assertEqual(long(memoryview(b"42")), 42)
+        self.assertEqual(long(IndexLike.with_val(99)), 99)
+        self.assertEqual(long(IntLike.with_val(99)), 99)
+
+        self.assertRaises(TypeError, long, IntLike.with_val(1.0))
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", DeprecationWarning)
+            self.assertRaises(DeprecationWarning, long, IntLike.with_val(True))
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(long(IntLike.with_val(True)), 1)
+        self.assertRaises(RuntimeError, long, IntLike.with_exc(RuntimeError))
+
+        self.assertRaises(TypeError, long, 1j)
+        self.assertRaises(TypeError, long, object())
+        self.assertRaises(SystemError, long, NULL)
+
+    def test_float(self):
+        # Test PyNumber_Float()
+        float_ = _testcapi.number_float
+
+        self.assertEqual(float_(1.25), 1.25)
+        self.assertEqual(float_(123), 123.)
+        self.assertEqual(float_("1.25"), 1.25)
+
+        self.assertEqual(float_(FloatLike.with_val(4.25)), 4.25)
+        self.assertEqual(float_(IndexLike.with_val(99)), 99.0)
+        self.assertEqual(float_(IndexLike.with_val(-1)), -1.0)
+
+        self.assertRaises(TypeError, float_, FloatLike.with_val(687))
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", DeprecationWarning)
+            self.assertRaises(DeprecationWarning, float_, FloatLike.with_val(subclassof(float)(4.25)))
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(float_(FloatLike.with_val(subclassof(float)(4.25))), 4.25)
+        self.assertRaises(RuntimeError, float_, FloatLike.with_exc(RuntimeError))
+
+        self.assertRaises(TypeError, float_, IndexLike.with_val(1.25))
+        self.assertRaises(OverflowError, float_, IndexLike.with_val(2**2000))
+
+        self.assertRaises(TypeError, float_, 1j)
+        self.assertRaises(TypeError, float_, object())
+        self.assertRaises(SystemError, float_, NULL)
+
+    def test_index(self):
+        # Test PyNumber_Index()
+        index = _testcapi.number_index
+
+        self.assertEqual(index(11), 11)
+
+        with warnings.catch_warnings():
+            warnings.simplefilter("error", DeprecationWarning)
+            self.assertRaises(DeprecationWarning, index, IndexLike.with_val(True))
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(index(IndexLike.with_val(True)), 1)
+        self.assertRaises(TypeError, index, IndexLike.with_val(1.0))
+        self.assertRaises(RuntimeError, index, IndexLike.with_exc(RuntimeError))
+
+        self.assertRaises(TypeError, index, 1.25)
+        self.assertRaises(TypeError, index, "42")
+        self.assertRaises(TypeError, index, object())
+        self.assertRaises(SystemError, index, NULL)
+
+    def test_tobase(self):
+        # Test PyNumber_ToBase()
+        tobase = _testcapi.number_tobase
+
+        self.assertEqual(tobase(10, 2), bin(10))
+        self.assertEqual(tobase(11, 8), oct(11))
+        self.assertEqual(tobase(16, 10), str(16))
+        self.assertEqual(tobase(13, 16), hex(13))
+
+        self.assertRaises(SystemError, tobase, NULL, 2)
+        self.assertRaises(SystemError, tobase, 2, 3)
+        self.assertRaises(TypeError, tobase, 1.25, 2)
+        self.assertRaises(TypeError, tobase, "42", 2)
+
+    def test_asssizet(self):
+        # Test PyNumber_AsSsize_t()
+        asssizet = _testcapi.number_asssizet
+
+        for n in [*range(-6, 7), PY_SSIZE_T_MIN, PY_SSIZE_T_MAX]:
+            self.assertEqual(asssizet(n, OverflowError), n)
+        self.assertEqual(asssizet(PY_SSIZE_T_MAX+10, NULL), PY_SSIZE_T_MAX)
+        self.assertEqual(asssizet(PY_SSIZE_T_MIN-10, NULL), PY_SSIZE_T_MIN)
+
+        self.assertRaises(OverflowError, asssizet, PY_SSIZE_T_MAX + 10, OverflowError)
+        self.assertRaises(RuntimeError, asssizet, PY_SSIZE_T_MAX + 10, RuntimeError)
+        self.assertRaises(SystemError, asssizet, NULL, TypeError)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_object.py b/Lib/test/test_capi/test_object.py
index fa23bff4e98918..cc9c9b688f00e2 100644
--- a/Lib/test/test_capi/test_object.py
+++ b/Lib/test/test_capi/test_object.py
@@ -103,5 +103,33 @@ def testPyObjectPrintOSError(self):
         with self.assertRaises(OSError):
             _testcapi.pyobject_print_os_error(output_filename)
 
+
+class ClearWeakRefsNoCallbacksTest(unittest.TestCase):
+    """Test PyUnstable_Object_ClearWeakRefsNoCallbacks"""
+    def test_ClearWeakRefsNoCallbacks(self):
+        """Ensure PyUnstable_Object_ClearWeakRefsNoCallbacks works"""
+        import weakref
+        import gc
+        class C:
+            pass
+        obj = C()
+        messages = []
+        ref = weakref.ref(obj, lambda: messages.append("don't add this"))
+        self.assertIs(ref(), obj)
+        self.assertFalse(messages)
+        _testcapi.pyobject_clear_weakrefs_no_callbacks(obj)
+        self.assertIsNone(ref())
+        gc.collect()
+        self.assertFalse(messages)
+
+    def test_ClearWeakRefsNoCallbacks_no_weakref_support(self):
+        """Don't fail on objects that don't support weakrefs"""
+        import weakref
+        obj = object()
+        with self.assertRaises(TypeError):
+            ref = weakref.ref(obj)
+        _testcapi.pyobject_clear_weakrefs_no_callbacks(obj)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_capi/test_set.py b/Lib/test/test_capi/test_set.py
index 499a5148d782ab..62d90a3f94326d 100644
--- a/Lib/test/test_capi/test_set.py
+++ b/Lib/test/test_capi/test_set.py
@@ -265,3 +265,7 @@ def test_set_next_entry(self):
         with self.assertRaises(SystemError):
             set_next(object(), 0)
         # CRASHES: set_next(NULL, 0)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_time.py b/Lib/test/test_capi/test_time.py
index 17ebd7c1962d48..989c158818ccf0 100644
--- a/Lib/test/test_capi/test_time.py
+++ b/Lib/test/test_capi/test_time.py
@@ -72,3 +72,7 @@ def test_time(self):
         # Test PyTime_Time() and PyTime_TimeRaw()
         self.check_clock(_testcapi.PyTime_Time, time.time)
         self.check_clock(_testcapi.PyTime_TimeRaw, time.time)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_tuple.py b/Lib/test/test_capi/test_tuple.py
new file mode 100644
index 00000000000000..e6b49caeb51f32
--- /dev/null
+++ b/Lib/test/test_capi/test_tuple.py
@@ -0,0 +1,261 @@
+import unittest
+import sys
+from collections import namedtuple
+from test.support import import_helper
+
+_testcapi = import_helper.import_module('_testcapi')
+_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
+
+NULL = None
+PY_SSIZE_T_MIN = _testcapi.PY_SSIZE_T_MIN
+PY_SSIZE_T_MAX = _testcapi.PY_SSIZE_T_MAX
+
+class TupleSubclass(tuple):
+    pass
+
+
+class CAPITest(unittest.TestCase):
+    def test_check(self):
+        # Test PyTuple_Check()
+        check = _testlimitedcapi.tuple_check
+
+        self.assertTrue(check((1, 2)))
+        self.assertTrue(check(()))
+        self.assertTrue(check(TupleSubclass((1, 2))))
+        self.assertFalse(check({1: 2}))
+        self.assertFalse(check([1, 2]))
+        self.assertFalse(check(42))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_tuple_checkexact(self):
+        # Test PyTuple_CheckExact()
+        check = _testlimitedcapi.tuple_checkexact
+
+        self.assertTrue(check((1, 2)))
+        self.assertTrue(check(()))
+        self.assertFalse(check(TupleSubclass((1, 2))))
+        self.assertFalse(check({1: 2}))
+        self.assertFalse(check([1, 2]))
+        self.assertFalse(check(42))
+        self.assertFalse(check(object()))
+
+        # CRASHES check(NULL)
+
+    def test_tuple_new(self):
+        # Test PyTuple_New()
+        tuple_new = _testlimitedcapi.tuple_new
+        size = _testlimitedcapi.tuple_size
+        checknull = _testcapi._check_tuple_item_is_NULL
+
+        tup1 = tuple_new(0)
+        self.assertEqual(tup1, ())
+        self.assertEqual(size(tup1), 0)
+        self.assertIs(type(tup1), tuple)
+        tup2 = tuple_new(1)
+        self.assertIs(type(tup2), tuple)
+        self.assertEqual(size(tup2), 1)
+        self.assertIsNot(tup2, tup1)
+        self.assertTrue(checknull(tup2, 0))
+
+        self.assertRaises(SystemError, tuple_new, -1)
+        self.assertRaises(SystemError, tuple_new, PY_SSIZE_T_MIN)
+        self.assertRaises(MemoryError, tuple_new, PY_SSIZE_T_MAX)
+
+    def test_tuple_pack(self):
+        # Test PyTuple_Pack()
+        pack = _testlimitedcapi.tuple_pack
+
+        self.assertEqual(pack(0), ())
+        self.assertEqual(pack(1, [1]), ([1],))
+        self.assertEqual(pack(2, [1], [2]), ([1], [2]))
+
+        self.assertRaises(SystemError, pack, PY_SSIZE_T_MIN)
+        self.assertRaises(SystemError, pack, -1)
+        self.assertRaises(MemoryError, pack, PY_SSIZE_T_MAX)
+
+        # CRASHES pack(1, NULL)
+        # CRASHES pack(2, [1])
+
+    def test_tuple_size(self):
+        # Test PyTuple_Size()
+        size = _testlimitedcapi.tuple_size
+
+        self.assertEqual(size(()), 0)
+        self.assertEqual(size((1, 2)), 2)
+        self.assertEqual(size(TupleSubclass((1, 2))), 2)
+
+        self.assertRaises(SystemError, size, [])
+        self.assertRaises(SystemError, size, 42)
+        self.assertRaises(SystemError, size, object())
+
+        # CRASHES size(NULL)
+
+    def test_tuple_get_size(self):
+        # Test PyTuple_GET_SIZE()
+        size = _testcapi.tuple_get_size
+
+        self.assertEqual(size(()), 0)
+        self.assertEqual(size((1, 2)), 2)
+        self.assertEqual(size(TupleSubclass((1, 2))), 2)
+
+    def test_tuple_getitem(self):
+        # Test PyTuple_GetItem()
+        getitem = _testlimitedcapi.tuple_getitem
+
+        tup = ([1], [2], [3])
+        self.assertEqual(getitem(tup, 0), [1])
+        self.assertEqual(getitem(tup, 2), [3])
+
+        tup2 = TupleSubclass(([1], [2], [3]))
+        self.assertEqual(getitem(tup2, 0), [1])
+        self.assertEqual(getitem(tup2, 2), [3])
+
+        self.assertRaises(IndexError, getitem, tup, PY_SSIZE_T_MIN)
+        self.assertRaises(IndexError, getitem, tup, -1)
+        self.assertRaises(IndexError, getitem, tup, len(tup))
+        self.assertRaises(IndexError, getitem, tup, PY_SSIZE_T_MAX)
+        self.assertRaises(SystemError, getitem, [1, 2, 3], 1)
+        self.assertRaises(SystemError, getitem, 42, 1)
+
+        # CRASHES getitem(NULL, 0)
+
+    def test_tuple_get_item(self):
+        # Test PyTuple_GET_ITEM()
+        get_item = _testcapi.tuple_get_item
+
+        tup = ([1], [2], [3])
+        self.assertEqual(get_item(tup, 0), [1])
+        self.assertEqual(get_item(tup, 2), [3])
+
+        tup2 = TupleSubclass(([1], [2], [3]))
+        self.assertEqual(get_item(tup2, 0), [1])
+        self.assertEqual(get_item(tup2, 2), [3])
+
+        # CRASHES get_item(NULL, 0)
+
+    def test_tuple_getslice(self):
+        # Test PyTuple_GetSlice()
+        getslice = _testlimitedcapi.tuple_getslice
+
+        # empty
+        tup = ([1], [2], [3])
+        self.assertEqual(getslice(tup, PY_SSIZE_T_MIN, 0), ())
+        self.assertEqual(getslice(tup, -1, 0), ())
+        self.assertEqual(getslice(tup, 3, PY_SSIZE_T_MAX), ())
+        self.assertEqual(getslice(tup, 1, 1), ())
+        self.assertEqual(getslice(tup, 2, 1), ())
+        tup = TupleSubclass(([1], [2], [3]))
+        self.assertEqual(getslice(tup, PY_SSIZE_T_MIN, 0), ())
+        self.assertEqual(getslice(tup, -1, 0), ())
+        self.assertEqual(getslice(tup, 3, PY_SSIZE_T_MAX), ())
+        self.assertEqual(getslice(tup, 1, 1), ())
+        self.assertEqual(getslice(tup, 2, 1), ())
+
+        # slice
+        tup = ([1], [2], [3], [4])
+        self.assertEqual(getslice(tup, 1, 3), ([2], [3]))
+        tup = TupleSubclass(([1], [2], [3], [4]))
+        self.assertEqual(getslice(tup, 1, 3), ([2], [3]))
+
+        # whole
+        tup = ([1], [2], [3])
+        self.assertEqual(getslice(tup, 0, 3), tup)
+        self.assertEqual(getslice(tup, 0, 100), tup)
+        self.assertEqual(getslice(tup, -100, 100), tup)
+        tup = TupleSubclass(([1], [2], [3]))
+        self.assertEqual(getslice(tup, 0, 3), tup)
+        self.assertEqual(getslice(tup, 0, 100), tup)
+        self.assertEqual(getslice(tup, -100, 100), tup)
+
+        self.assertRaises(SystemError, getslice, [[1], [2], [3]], 0, 0)
+        self.assertRaises(SystemError, getslice, 42, 0, 0)
+
+        # CRASHES getslice(NULL, 0, 0)
+
+    def test_tuple_setitem(self):
+        # Test PyTuple_SetItem()
+        setitem = _testlimitedcapi.tuple_setitem
+        checknull = _testcapi._check_tuple_item_is_NULL
+
+        tup = ([1], [2])
+        self.assertEqual(setitem(tup, 0, []), ([], [2]))
+        self.assertEqual(setitem(tup, 1, []), ([1], []))
+
+        tup2 = setitem(tup, 1, NULL)
+        self.assertTrue(checknull(tup2, 1))
+
+        tup2 = TupleSubclass(([1], [2]))
+        self.assertRaises(SystemError, setitem, tup2, 0, [])
+
+        self.assertRaises(IndexError, setitem, tup, PY_SSIZE_T_MIN, [])
+        self.assertRaises(IndexError, setitem, tup, -1, [])
+        self.assertRaises(IndexError, setitem, tup, len(tup), [])
+        self.assertRaises(IndexError, setitem, tup, PY_SSIZE_T_MAX, [])
+        self.assertRaises(SystemError, setitem, [1], 0, [])
+        self.assertRaises(SystemError, setitem, 42, 0, [])
+
+        # CRASHES setitem(NULL, 0, [])
+
+    def test_tuple_set_item(self):
+        # Test PyTuple_SET_ITEM()
+        set_item = _testcapi.tuple_set_item
+        checknull = _testcapi._check_tuple_item_is_NULL
+
+        tup = ([1], [2])
+        self.assertEqual(set_item(tup, 0, []), ([], [2]))
+        self.assertEqual(set_item(tup, 1, []), ([1], []))
+
+        tup2 = set_item(tup, 1, NULL)
+        self.assertTrue(checknull(tup2, 1))
+
+        tup2 = TupleSubclass(([1], [2]))
+        self.assertIs(set_item(tup2, 0, []), tup2)
+        self.assertEqual(tup2, ([], [2]))
+
+        # CRASHES set_item(tup, -1, [])
+        # CRASHES set_item(tup, len(tup), [])
+        # CRASHES set_item([1], 0, [])
+        # CRASHES set_item(NULL, 0, [])
+
+    def test__tuple_resize(self):
+        # Test _PyTuple_Resize()
+        resize = _testcapi._tuple_resize
+        checknull = _testcapi._check_tuple_item_is_NULL
+
+        a = ()
+        b = resize(a, 0, False)
+        self.assertEqual(len(a), 0)
+        self.assertEqual(len(b), 0)
+        b = resize(a, 2, False)
+        self.assertEqual(len(a), 0)
+        self.assertEqual(len(b), 2)
+        self.assertTrue(checknull(b, 0))
+        self.assertTrue(checknull(b, 1))
+
+        a = ([1], [2], [3])
+        b = resize(a, 3)
+        self.assertEqual(b, a)
+        b = resize(a, 2)
+        self.assertEqual(b, a[:2])
+        b = resize(a, 5)
+        self.assertEqual(len(b), 5)
+        self.assertEqual(b[:3], a)
+        self.assertTrue(checknull(b, 3))
+        self.assertTrue(checknull(b, 4))
+
+        a = ()
+        self.assertRaises(MemoryError, resize, a, PY_SSIZE_T_MAX)
+        self.assertRaises(SystemError, resize, a, -1)
+        self.assertRaises(SystemError, resize, a, PY_SSIZE_T_MIN)
+        # refcount > 1
+        a = (1, 2, 3)
+        self.assertRaises(SystemError, resize, a, 3, False)
+        self.assertRaises(SystemError, resize, a, 0, False)
+        # non-tuple
+        self.assertRaises(SystemError, resize, [1, 2, 3], 0, False)
+        self.assertRaises(SystemError, resize, NULL, 0, False)
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_capi/test_unicode.py b/Lib/test/test_capi/test_unicode.py
index a69f817c515ba7..f750ec1a56fef9 100644
--- a/Lib/test/test_capi/test_unicode.py
+++ b/Lib/test/test_capi/test_unicode.py
@@ -1,7 +1,7 @@
 import unittest
 import sys
 from test import support
-from test.support import import_helper
+from test.support import threading_helper, import_helper
 
 try:
     import _testcapi
@@ -959,6 +959,24 @@ def test_asutf8(self):
         self.assertRaises(TypeError, unicode_asutf8, [], 0)
         # CRASHES unicode_asutf8(NULL, 0)
 
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
+    @threading_helper.requires_working_threading()
+    def test_asutf8_race(self):
+        """Test that there's no race condition in PyUnicode_AsUTF8()"""
+        unicode_asutf8 = _testcapi.unicode_asutf8
+        from threading import Thread
+
+        data = "😊"
+
+        def worker():
+            for _ in range(1000):
+                self.assertEqual(unicode_asutf8(data, 5), b'\xf0\x9f\x98\x8a\0')
+
+        threads = [Thread(target=worker) for _ in range(10)]
+        with threading_helper.start_threads(threads):
+            pass
+
+
     @support.cpython_only
     @unittest.skipIf(_testlimitedcapi is None, 'need _testlimitedcapi module')
     def test_asutf8andsize(self):
diff --git a/Lib/test/test_capi/test_watchers.py b/Lib/test/test_capi/test_watchers.py
index 90665a7561b316..018e6def6bafdd 100644
--- a/Lib/test/test_capi/test_watchers.py
+++ b/Lib/test/test_capi/test_watchers.py
@@ -96,6 +96,23 @@ def test_dealloc(self):
             del d
             self.assert_events(["dealloc"])
 
+    def test_object_dict(self):
+        class MyObj: pass
+        o = MyObj()
+
+        with self.watcher() as wid:
+            self.watch(wid, o.__dict__)
+            o.foo = "bar"
+            o.foo = "baz"
+            del o.foo
+            self.assert_events(["new:foo:bar", "mod:foo:baz", "del:foo"])
+
+        with self.watcher() as wid:
+            self.watch(wid, o.__dict__)
+            for _ in range(100):
+                o.foo = "bar"
+            self.assert_events(["new:foo:bar"] + ["mod:foo:bar"] * 99)
+
     def test_unwatch(self):
         d = {}
         with self.watcher() as wid:
diff --git a/Lib/test/test_cext/__init__.py b/Lib/test/test_cext/__init__.py
index ec44b0ce1f8a56..54859f9ff7622d 100644
--- a/Lib/test/test_cext/__init__.py
+++ b/Lib/test/test_cext/__init__.py
@@ -86,6 +86,8 @@ def run_cmd(operation, cmd):
         cmd = [python_exe, '-X', 'dev',
                '-m', 'pip', 'install', '--no-build-isolation',
                os.path.abspath(pkg_dir)]
+        if support.verbose:
+            cmd.append('-v')
         run_cmd('Install', cmd)
 
         # Do a reference run. Until we test that running python
diff --git a/Lib/test/test_cext/extension.c b/Lib/test/test_cext/extension.c
index eb23dbe20353ba..b76abe1d74c628 100644
--- a/Lib/test/test_cext/extension.c
+++ b/Lib/test/test_cext/extension.c
@@ -37,7 +37,13 @@ static PyMethodDef _testcext_methods[] = {
 
 
 static int
-_testcext_exec(PyObject *module)
+_testcext_exec(
+#ifdef __STDC_VERSION__
+    PyObject *module
+#else
+    PyObject *Py_UNUSED(module)
+#endif
+    )
 {
 #ifdef __STDC_VERSION__
     if (PyModule_AddIntMacro(module, __STDC_VERSION__) < 0) {
@@ -53,7 +59,7 @@ _testcext_exec(PyObject *module)
 }
 
 static PyModuleDef_Slot _testcext_slots[] = {
-    {Py_mod_exec, _testcext_exec},
+    {Py_mod_exec, (void*)_testcext_exec},
     {0, NULL}
 };
 
diff --git a/Lib/test/test_cext/setup.py b/Lib/test/test_cext/setup.py
index ccad3fa62ad086..e97749b45ea6f3 100644
--- a/Lib/test/test_cext/setup.py
+++ b/Lib/test/test_cext/setup.py
@@ -11,12 +11,16 @@
 
 
 SOURCE = 'extension.c'
+
 if not support.MS_WINDOWS:
     # C compiler flags for GCC and clang
     CFLAGS = [
         # The purpose of test_cext extension is to check that building a C
         # extension using the Python C API does not emit C compiler warnings.
         '-Werror',
+
+        # gh-120593: Check the 'const' qualifier
+        '-Wcast-qual',
     ]
     if not support.Py_GIL_DISABLED:
         CFLAGS.append(
@@ -25,8 +29,13 @@
             '-Werror=declaration-after-statement',
         )
 else:
-    # Don't pass any compiler flag to MSVC
-    CFLAGS = []
+    # MSVC compiler flags
+    CFLAGS = [
+        # Display warnings level 1 to 4
+        '/W4',
+        # Treat all compiler warnings as compiler errors
+        '/WX',
+    ]
 
 
 def main():
diff --git a/Lib/test/test_class.py b/Lib/test/test_class.py
index 655d53b8d5bb6a..d2df6228ec4449 100644
--- a/Lib/test/test_class.py
+++ b/Lib/test/test_class.py
@@ -1,6 +1,7 @@
 "Test the functionality of Python classes implementing operators."
 
 import unittest
+from test.support import cpython_only, import_helper, script_helper
 
 testmeths = [
 
@@ -502,6 +503,56 @@ def __eq__(self, other): return 1
 
         self.assertRaises(TypeError, hash, C2())
 
+    def testPredefinedAttrs(self):
+        o = object()
+
+        class Custom:
+            pass
+
+        c = Custom()
+
+        methods = (
+            '__class__', '__delattr__', '__dir__', '__eq__', '__format__',
+            '__ge__', '__getattribute__', '__getstate__', '__gt__', '__hash__',
+            '__init__', '__init_subclass__', '__le__', '__lt__', '__ne__',
+            '__new__', '__reduce__', '__reduce_ex__', '__repr__',
+            '__setattr__', '__sizeof__', '__str__', '__subclasshook__'
+        )
+        for name in methods:
+            with self.subTest(name):
+                self.assertTrue(callable(getattr(object, name, None)))
+                self.assertTrue(callable(getattr(o, name, None)))
+                self.assertTrue(callable(getattr(Custom, name, None)))
+                self.assertTrue(callable(getattr(c, name, None)))
+
+        not_defined = [
+            '__abs__', '__aenter__', '__aexit__', '__aiter__', '__anext__',
+            '__await__', '__bool__', '__bytes__', '__ceil__',
+            '__complex__', '__contains__', '__del__', '__delete__',
+            '__delitem__', '__divmod__', '__enter__', '__exit__',
+            '__float__', '__floor__', '__get__', '__getattr__', '__getitem__',
+            '__index__', '__int__', '__invert__', '__iter__', '__len__',
+            '__length_hint__', '__missing__', '__neg__', '__next__',
+            '__objclass__', '__pos__', '__rdivmod__', '__reversed__',
+            '__round__', '__set__', '__setitem__', '__trunc__'
+        ]
+        augment = (
+            'add', 'and', 'floordiv', 'lshift', 'matmul', 'mod', 'mul', 'pow',
+            'rshift', 'sub', 'truediv', 'xor'
+        )
+        not_defined.extend(map("__{}__".format, augment))
+        not_defined.extend(map("__r{}__".format, augment))
+        not_defined.extend(map("__i{}__".format, augment))
+        for name in not_defined:
+            with self.subTest(name):
+                self.assertFalse(hasattr(object, name))
+                self.assertFalse(hasattr(o, name))
+                self.assertFalse(hasattr(Custom, name))
+                self.assertFalse(hasattr(c, name))
+
+        # __call__() is defined on the metaclass but not the class
+        self.assertFalse(hasattr(o, "__call__"))
+        self.assertFalse(hasattr(c, "__call__"))
 
     def testSFBug532646(self):
         # Test for SF bug 532646
@@ -882,6 +933,24 @@ class Foo:
         f.a = 3
         self.assertEqual(f.a, 3)
 
+    def test_rematerialize_object_dict(self):
+        # gh-121860: rematerializing an object's managed dictionary after it
+        # had been deleted caused a crash.
+        class Foo: pass
+        f = Foo()
+        f.__dict__["attr"] = 1
+        del f.__dict__
+
+        # Using a str subclass is a way to trigger the re-materialization
+        class StrSubclass(str): pass
+        self.assertFalse(hasattr(f, StrSubclass("attr")))
+
+        # Changing the __class__ also triggers the re-materialization
+        class Bar: pass
+        f.__class__ = Bar
+        self.assertIsInstance(f, Bar)
+        self.assertEqual(f.__dict__, {})
+
     def test_store_attr_type_cache(self):
         """Verifies that the type cache doesn't provide a value which  is
         inconsistent from the dict."""
@@ -897,10 +966,40 @@ class C:
         C.a
         C.a
 
-        # destructor shouldn't be able to see inconsisent state
+        # destructor shouldn't be able to see inconsistent state
         C.a = X()
         C.a = X()
 
+    @cpython_only
+    def test_detach_materialized_dict_no_memory(self):
+        # Skip test if _testcapi is not available:
+        import_helper.import_module('_testcapi')
+
+        code = """if 1:
+            import test.support
+            import _testcapi
+
+            class A:
+                def __init__(self):
+                    self.a = 1
+                    self.b = 2
+            a = A()
+            d = a.__dict__
+            with test.support.catch_unraisable_exception() as ex:
+                _testcapi.set_nomemory(0, 1)
+                del a
+                assert ex.unraisable.exc_type is MemoryError
+            try:
+                d["a"]
+            except KeyError:
+                pass
+            else:
+                assert False, "KeyError not raised"
+        """
+        rc, out, err = script_helper.assert_python_ok("-c", code)
+        self.assertEqual(rc, 0)
+        self.assertFalse(out, msg=out.decode('utf-8'))
+        self.assertFalse(err, msg=err.decode('utf-8'))
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
index d9e4ce280c68a1..e210103a80f399 100644
--- a/Lib/test/test_clinic.py
+++ b/Lib/test/test_clinic.py
@@ -322,7 +322,7 @@ def __init__(self):
         """
         self.expect_failure(block, err, lineno=8)
 
-    def test_multiple_star_in_args(self):
+    def test_star_after_vararg(self):
         err = "'my_test_func' uses '*' more than once."
         block = """
             /*[clinic input]
@@ -336,6 +336,20 @@ def test_multiple_star_in_args(self):
         """
         self.expect_failure(block, err, lineno=6)
 
+    def test_vararg_after_star(self):
+        err = "'my_test_func' uses '*' more than once."
+        block = """
+            /*[clinic input]
+            my_test_func
+
+                pos_arg: object
+                *
+                *args: object
+                kw_arg: object
+            [clinic start generated code]*/
+        """
+        self.expect_failure(block, err, lineno=6)
+
     def test_module_already_got_one(self):
         err = "Already defined module 'm'!"
         block = """
@@ -717,6 +731,16 @@ def test_cloned_forced_text_signature_illegal(self):
         err = "Cannot use @text_signature when cloning a function"
         self.expect_failure(block, err, lineno=11)
 
+    def test_ignore_preprocessor_in_comments(self):
+        for dsl in "clinic", "python":
+            raw = dedent(f"""\
+                /*[{dsl} input]
+                # CPP directives, valid or not, should be ignored in C comments.
+                #
+                [{dsl} start generated code]*/
+            """)
+            self.clinic.parse(raw)
+
 
 class ParseFileUnitTest(TestCase):
     def expect_parsing_failure(
@@ -1787,13 +1811,43 @@ def test_parameters_required_after_depr_star2(self):
         )
         self.expect_failure(block, err, lineno=4)
 
+    def test_parameters_required_after_depr_star3(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                * [from 3.14]
+                *args: object
+                b: int
+            Docstring.
+        """
+        err = (
+            "Function 'bar' specifies '* [from ...]' without "
+            "following parameters."
+        )
+        self.expect_failure(block, err, lineno=4)
+
     def test_depr_star_must_come_before_star(self):
         block = """
             module foo
             foo.bar
-                this: int
+                a: int
                 *
                 * [from 3.14]
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '* [from ...]' must precede '*'"
+        self.expect_failure(block, err, lineno=4)
+
+    def test_depr_star_must_come_before_vararg(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                *args: object
+                * [from 3.14]
+                b: int
             Docstring.
         """
         err = "Function 'bar': '* [from ...]' must precede '*'"
@@ -1908,7 +1962,7 @@ def test_double_slash(self):
         err = "Function 'bar' uses '/' more than once."
         self.expect_failure(block, err)
 
-    def test_mix_star_and_slash(self):
+    def test_slash_after_star(self):
         block = """
             module foo
             foo.bar
@@ -1921,6 +1975,19 @@ def test_mix_star_and_slash(self):
         err = "Function 'bar': '/' must precede '*'"
         self.expect_failure(block, err)
 
+    def test_slash_after_vararg(self):
+        block = """
+            module foo
+            foo.bar
+               x: int
+               y: int
+               *args: object
+               z: int
+               /
+        """
+        err = "Function 'bar': '/' must precede '*'"
+        self.expect_failure(block, err)
+
     def test_depr_star_must_come_after_slash(self):
         block = """
             module foo
@@ -1960,6 +2027,19 @@ def test_star_must_come_after_depr_slash(self):
         err = "Function 'bar': '/ [from ...]' must precede '*'"
         self.expect_failure(block, err, lineno=4)
 
+    def test_vararg_must_come_after_depr_slash(self):
+        block = """
+            module foo
+            foo.bar
+                a: int
+                *args: object
+                / [from 3.14]
+                b: int
+            Docstring.
+        """
+        err = "Function 'bar': '/ [from ...]' must precede '*'"
+        self.expect_failure(block, err, lineno=4)
+
     def test_depr_slash_must_come_after_slash(self):
         block = """
             module foo
@@ -1987,7 +2067,7 @@ def test_parameters_not_permitted_after_slash_for_now(self):
         self.expect_failure(block, err)
 
     def test_parameters_no_more_than_one_vararg(self):
-        err = "Too many var args"
+        err = "Function 'bar' uses '*' more than once."
         block = """
             module foo
             foo.bar
@@ -2624,7 +2704,7 @@ def test_cli_force(self):
             # Verify by checking the checksum.
             checksum = (
                 "/*[clinic end generated code: "
-                "output=c16447c01510dfb3 input=9543a8d2da235301]*/\n"
+                "output=0acbef4794cb933e input=9543a8d2da235301]*/\n"
             )
             with open(fn, encoding='utf-8') as f:
                 generated = f.read()
@@ -3319,13 +3399,6 @@ def test_posonly_vararg(self):
         with self.assertRaises(TypeError):
             ac_tester.posonly_vararg(1, 2, 3, b=4)
 
-    def test_vararg_and_posonly(self):
-        with self.assertRaises(TypeError):
-            ac_tester.vararg_and_posonly()
-        with self.assertRaises(TypeError):
-            ac_tester.vararg_and_posonly(1, b=2)
-        self.assertEqual(ac_tester.vararg_and_posonly(1, 2, 3, 4), (1, (2, 3, 4)))
-
     def test_vararg(self):
         with self.assertRaises(TypeError):
             ac_tester.vararg()
@@ -3334,11 +3407,27 @@ def test_vararg(self):
         self.assertEqual(ac_tester.vararg(1, 2, 3, 4), (1, (2, 3, 4)))
 
     def test_vararg_with_default(self):
-        with self.assertRaises(TypeError):
-            ac_tester.vararg_with_default()
-        self.assertEqual(ac_tester.vararg_with_default(1, b=False), (1, (), False))
-        self.assertEqual(ac_tester.vararg_with_default(1, 2, 3, 4), (1, (2, 3, 4), False))
-        self.assertEqual(ac_tester.vararg_with_default(1, 2, 3, 4, b=True), (1, (2, 3, 4), True))
+        fn = ac_tester.vararg_with_default
+        self.assertRaises(TypeError, fn)
+        self.assertRaises(TypeError, fn, 1, a=2)
+        self.assertEqual(fn(1, b=2), (1, (), True))
+        self.assertEqual(fn(1, 2, 3, 4), (1, (2, 3, 4), False))
+        self.assertEqual(fn(1, 2, 3, 4, b=5), (1, (2, 3, 4), True))
+        self.assertEqual(fn(a=1), (1, (), False))
+        self.assertEqual(fn(a=1, b=2), (1, (), True))
+
+    def test_vararg_with_default2(self):
+        fn = ac_tester.vararg_with_default2
+        self.assertRaises(TypeError, fn)
+        self.assertRaises(TypeError, fn, 1, a=2)
+        self.assertEqual(fn(1, b=2), (1, (), 2, None))
+        self.assertEqual(fn(1, b=2, c=3), (1, (), 2, 3))
+        self.assertEqual(fn(1, 2, 3), (1, (2, 3), None, None))
+        self.assertEqual(fn(1, 2, 3, b=4), (1, (2, 3), 4, None))
+        self.assertEqual(fn(1, 2, 3, b=4, c=5), (1, (2, 3), 4, 5))
+        self.assertEqual(fn(a=1), (1, (), None, None))
+        self.assertEqual(fn(a=1, b=2), (1, (), 2, None))
+        self.assertEqual(fn(a=1, b=2, c=3), (1, (), 2, 3))
 
     def test_vararg_with_only_defaults(self):
         self.assertEqual(ac_tester.vararg_with_only_defaults(), ((), None))
@@ -3347,6 +3436,17 @@ def test_vararg_with_only_defaults(self):
         self.assertEqual(ac_tester.vararg_with_only_defaults(1, 2, 3, 4), ((1, 2, 3, 4), None))
         self.assertEqual(ac_tester.vararg_with_only_defaults(1, 2, 3, 4, b=5), ((1, 2, 3, 4), 5))
 
+    def test_vararg_kwonly_req_opt(self):
+        fn = ac_tester.vararg_kwonly_req_opt
+        self.assertRaises(TypeError, fn)
+        self.assertEqual(fn(a=1), ((), 1, None, None))
+        self.assertEqual(fn(a=1, b=2), ((), 1, 2, None))
+        self.assertEqual(fn(a=1, b=2, c=3), ((), 1, 2, 3))
+        self.assertRaises(TypeError, fn, 1)
+        self.assertEqual(fn(1, a=2), ((1,), 2, None, None))
+        self.assertEqual(fn(1, a=2, b=3), ((1,), 2, 3, None))
+        self.assertEqual(fn(1, a=2, b=3, c=4), ((1,), 2, 3, 4))
+
     def test_gh_32092_oob(self):
         ac_tester.gh_32092_oob(1, 2, 3, 4, kw1=5, kw2=6)
 
diff --git a/Lib/test/test_cmath.py b/Lib/test/test_cmath.py
index 57f80d5d8cd016..a96a5780b31b6f 100644
--- a/Lib/test/test_cmath.py
+++ b/Lib/test/test_cmath.py
@@ -1,4 +1,5 @@
 from test.support import requires_IEEE_754, cpython_only, import_helper
+from test.support.testcase import ComplexesAreIdenticalMixin
 from test.test_math import parse_testfile, test_file
 import test.test_math as test_math
 import unittest
@@ -49,7 +50,7 @@
         (INF, NAN)
         ]]
 
-class CMathTests(unittest.TestCase):
+class CMathTests(ComplexesAreIdenticalMixin, unittest.TestCase):
     # list of all functions in cmath
     test_functions = [getattr(cmath, fname) for fname in [
             'acos', 'acosh', 'asin', 'asinh', 'atan', 'atanh',
@@ -65,39 +66,6 @@ def setUp(self):
     def tearDown(self):
         self.test_values.close()
 
-    def assertFloatIdentical(self, x, y):
-        """Fail unless floats x and y are identical, in the sense that:
-        (1) both x and y are nans, or
-        (2) both x and y are infinities, with the same sign, or
-        (3) both x and y are zeros, with the same sign, or
-        (4) x and y are both finite and nonzero, and x == y
-
-        """
-        msg = 'floats {!r} and {!r} are not identical'
-
-        if math.isnan(x) or math.isnan(y):
-            if math.isnan(x) and math.isnan(y):
-                return
-        elif x == y:
-            if x != 0.0:
-                return
-            # both zero; check that signs match
-            elif math.copysign(1.0, x) == math.copysign(1.0, y):
-                return
-            else:
-                msg += ': zeros have different signs'
-        self.fail(msg.format(x, y))
-
-    def assertComplexIdentical(self, x, y):
-        """Fail unless complex numbers x and y have equal values and signs.
-
-        In particular, if x and y both have real (or imaginary) part
-        zero, but the zeros have different signs, this test will fail.
-
-        """
-        self.assertFloatIdentical(x.real, y.real)
-        self.assertFloatIdentical(x.imag, y.imag)
-
     def rAssertAlmostEqual(self, a, b, rel_err = 2e-15, abs_err = 5e-323,
                            msg=None):
         """Fail if the two floating-point numbers are not almost equal.
@@ -555,7 +523,7 @@ def test_isinf(self):
     @requires_IEEE_754
     def testTanhSign(self):
         for z in complex_zeros:
-            self.assertComplexIdentical(cmath.tanh(z), z)
+            self.assertComplexesAreIdentical(cmath.tanh(z), z)
 
     # The algorithm used for atan and atanh makes use of the system
     # log1p function; If that system function doesn't respect the sign
@@ -564,12 +532,12 @@ def testTanhSign(self):
     @requires_IEEE_754
     def testAtanSign(self):
         for z in complex_zeros:
-            self.assertComplexIdentical(cmath.atan(z), z)
+            self.assertComplexesAreIdentical(cmath.atan(z), z)
 
     @requires_IEEE_754
     def testAtanhSign(self):
         for z in complex_zeros:
-            self.assertComplexIdentical(cmath.atanh(z), z)
+            self.assertComplexesAreIdentical(cmath.atanh(z), z)
 
 
 class IsCloseTests(test_math.IsCloseTests):
diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index 9624d35d0c3948..dc420f33c233af 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -879,19 +879,29 @@ def test_pythondevmode_env(self):
         self.assertEqual(proc.stdout.rstrip(), 'True')
         self.assertEqual(proc.returncode, 0, proc)
 
-    @unittest.skipUnless(support.Py_GIL_DISABLED,
-                         "PYTHON_GIL and -X gil only supported in Py_GIL_DISABLED builds")
     def test_python_gil(self):
         cases = [
             # (env, opt, expected, msg)
-            (None, None, 'None', "no options set"),
-            ('0', None, '0', "PYTHON_GIL=0"),
             ('1', None, '1', "PYTHON_GIL=1"),
-            ('1', '0', '0', "-X gil=0 overrides PYTHON_GIL=1"),
-            (None, '0', '0', "-X gil=0"),
             (None, '1', '1', "-X gil=1"),
         ]
 
+        if support.Py_GIL_DISABLED:
+            cases.extend(
+                [
+                    (None, None, 'None', "no options set"),
+                    ('0', None, '0', "PYTHON_GIL=0"),
+                    ('1', '0', '0', "-X gil=0 overrides PYTHON_GIL=1"),
+                    (None, '0', '0', "-X gil=0"),
+                ]
+            )
+        else:
+            cases.extend(
+                [
+                    (None, None, '1', '-X gil=0 (unsupported by this build)'),
+                    ('1', None, '1', 'PYTHON_GIL=0 (unsupported by this build)'),
+                ]
+            )
         code = "import sys; print(sys.flags.gil)"
         environ = dict(os.environ)
 
diff --git a/Lib/test/test_cmd_line_script.py b/Lib/test/test_cmd_line_script.py
index 3a5a8abf81e43d..1ec5e581f81d17 100644
--- a/Lib/test/test_cmd_line_script.py
+++ b/Lib/test/test_cmd_line_script.py
@@ -88,6 +88,8 @@ def _make_test_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
     importlib.invalidate_caches()
     return to_return
 
+
+@support.force_not_colorized_test_class
 class CmdLineTest(unittest.TestCase):
     def _check_output(self, script_name, exit_code, data,
                              expected_file, expected_argv0,
diff --git a/Lib/test/test_code_module.py b/Lib/test/test_code_module.py
index 259778a5cade98..20b960ce8d1e02 100644
--- a/Lib/test/test_code_module.py
+++ b/Lib/test/test_code_module.py
@@ -1,12 +1,13 @@
 "Test InteractiveConsole and InteractiveInterpreter from code module"
 import sys
+import traceback
 import unittest
 from textwrap import dedent
 from contextlib import ExitStack
 from unittest import mock
+from test.support import force_not_colorized_test_class
 from test.support import import_helper
 
-
 code = import_helper.import_module('code')
 
 
@@ -29,7 +30,9 @@ def mock_sys(self):
         del self.sysmod.ps2
 
 
+@force_not_colorized_test_class
 class TestInteractiveConsole(unittest.TestCase, MockSys):
+    maxDiff = None
 
     def setUp(self):
         self.console = code.InteractiveConsole()
@@ -61,21 +64,151 @@ def test_console_stderr(self):
             raise AssertionError("no console stdout")
 
     def test_syntax_error(self):
-        self.infunc.side_effect = ["undefined", EOFError('Finished')]
+        self.infunc.side_effect = ["def f():",
+                                   "    x = ?",
+                                   "",
+                                    EOFError('Finished')]
         self.console.interact()
-        for call in self.stderr.method_calls:
-            if 'NameError' in ''.join(call[1]):
-                break
-        else:
-            raise AssertionError("No syntax error from console")
+        output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
+        output = output[output.index('(InteractiveConsole)'):]
+        output = output[:output.index('\nnow exiting')]
+        self.assertEqual(output.splitlines()[1:], [
+            '  File "<console>", line 2',
+            '    x = ?',
+            '        ^',
+            'SyntaxError: invalid syntax'])
+        self.assertIs(self.sysmod.last_type, SyntaxError)
+        self.assertIs(type(self.sysmod.last_value), SyntaxError)
+        self.assertIsNone(self.sysmod.last_traceback)
+        self.assertIsNone(self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
+
+    def test_indentation_error(self):
+        self.infunc.side_effect = ["  1", EOFError('Finished')]
+        self.console.interact()
+        output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
+        output = output[output.index('(InteractiveConsole)'):]
+        output = output[:output.index('\nnow exiting')]
+        self.assertEqual(output.splitlines()[1:], [
+            '  File "<console>", line 1',
+            '    1',
+            'IndentationError: unexpected indent'])
+        self.assertIs(self.sysmod.last_type, IndentationError)
+        self.assertIs(type(self.sysmod.last_value), IndentationError)
+        self.assertIsNone(self.sysmod.last_traceback)
+        self.assertIsNone(self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
+
+    def test_unicode_error(self):
+        self.infunc.side_effect = ["'\ud800'", EOFError('Finished')]
+        self.console.interact()
+        output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
+        output = output[output.index('(InteractiveConsole)'):]
+        output = output[output.index('\n') + 1:]
+        self.assertTrue(output.startswith('UnicodeEncodeError: '), output)
+        self.assertIs(self.sysmod.last_type, UnicodeEncodeError)
+        self.assertIs(type(self.sysmod.last_value), UnicodeEncodeError)
+        self.assertIsNone(self.sysmod.last_traceback)
+        self.assertIsNone(self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
 
     def test_sysexcepthook(self):
-        self.infunc.side_effect = ["raise ValueError('')",
+        self.infunc.side_effect = ["def f():",
+                                   "    raise ValueError('BOOM!')",
+                                   "",
+                                   "f()",
                                     EOFError('Finished')]
         hook = mock.Mock()
         self.sysmod.excepthook = hook
         self.console.interact()
-        self.assertTrue(hook.called)
+        hook.assert_called()
+        hook.assert_called_with(self.sysmod.last_type,
+                                self.sysmod.last_value,
+                                self.sysmod.last_traceback)
+        self.assertIs(self.sysmod.last_type, ValueError)
+        self.assertIs(type(self.sysmod.last_value), ValueError)
+        self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
+        self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
+            'Traceback (most recent call last):\n',
+            '  File "<console>", line 1, in <module>\n',
+            '  File "<console>", line 2, in f\n',
+            'ValueError: BOOM!\n'])
+
+    def test_sysexcepthook_syntax_error(self):
+        self.infunc.side_effect = ["def f():",
+                                   "    x = ?",
+                                   "",
+                                    EOFError('Finished')]
+        hook = mock.Mock()
+        self.sysmod.excepthook = hook
+        self.console.interact()
+        hook.assert_called()
+        hook.assert_called_with(self.sysmod.last_type,
+                                self.sysmod.last_value,
+                                self.sysmod.last_traceback)
+        self.assertIs(self.sysmod.last_type, SyntaxError)
+        self.assertIs(type(self.sysmod.last_value), SyntaxError)
+        self.assertIsNone(self.sysmod.last_traceback)
+        self.assertIsNone(self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
+        self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
+            '  File "<console>", line 2\n',
+            '    x = ?\n',
+            '        ^\n',
+            'SyntaxError: invalid syntax\n'])
+
+    def test_sysexcepthook_indentation_error(self):
+        self.infunc.side_effect = ["  1", EOFError('Finished')]
+        hook = mock.Mock()
+        self.sysmod.excepthook = hook
+        self.console.interact()
+        hook.assert_called()
+        hook.assert_called_with(self.sysmod.last_type,
+                                self.sysmod.last_value,
+                                self.sysmod.last_traceback)
+        self.assertIs(self.sysmod.last_type, IndentationError)
+        self.assertIs(type(self.sysmod.last_value), IndentationError)
+        self.assertIsNone(self.sysmod.last_traceback)
+        self.assertIsNone(self.sysmod.last_value.__traceback__)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
+        self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
+            '  File "<console>", line 1\n',
+            '    1\n',
+            'IndentationError: unexpected indent\n'])
+
+    def test_sysexcepthook_crashing_doesnt_close_repl(self):
+        self.infunc.side_effect = ["1/0", "a = 123", "print(a)", EOFError('Finished')]
+        self.sysmod.excepthook = 1
+        self.console.interact()
+        self.assertEqual(['write', ('123', ), {}], self.stdout.method_calls[0])
+        error = "".join(call.args[0] for call in self.stderr.method_calls if call[0] == 'write')
+        self.assertIn("Error in sys.excepthook:", error)
+        self.assertEqual(error.count("'int' object is not callable"), 1)
+        self.assertIn("Original exception was:", error)
+        self.assertIn("division by zero", error)
+
+    def test_sysexcepthook_raising_BaseException(self):
+        self.infunc.side_effect = ["1/0", "a = 123", "print(a)", EOFError('Finished')]
+        s = "not so fast"
+        def raise_base(*args, **kwargs):
+            raise BaseException(s)
+        self.sysmod.excepthook = raise_base
+        self.console.interact()
+        self.assertEqual(['write', ('123', ), {}], self.stdout.method_calls[0])
+        error = "".join(call.args[0] for call in self.stderr.method_calls if call[0] == 'write')
+        self.assertIn("Error in sys.excepthook:", error)
+        self.assertEqual(error.count("not so fast"), 1)
+        self.assertIn("Original exception was:", error)
+        self.assertIn("division by zero", error)
+
+    def test_sysexcepthook_raising_SystemExit_gets_through(self):
+        self.infunc.side_effect = ["1/0"]
+        def raise_base(*args, **kwargs):
+            raise SystemExit
+        self.sysmod.excepthook = raise_base
+        with self.assertRaises(SystemExit):
+            self.console.interact()
 
     def test_banner(self):
         # with banner
@@ -134,6 +267,11 @@ def test_cause_tb(self):
         ValueError
         """)
         self.assertIn(expected, output)
+        self.assertIs(self.sysmod.last_type, ValueError)
+        self.assertIs(type(self.sysmod.last_value), ValueError)
+        self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
+        self.assertIsNotNone(self.sysmod.last_traceback)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
 
     def test_context_tb(self):
         self.infunc.side_effect = ["try: ham\nexcept: eggs\n",
@@ -152,6 +290,11 @@ def test_context_tb(self):
         NameError: name 'eggs' is not defined
         """)
         self.assertIn(expected, output)
+        self.assertIs(self.sysmod.last_type, NameError)
+        self.assertIs(type(self.sysmod.last_value), NameError)
+        self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
+        self.assertIsNotNone(self.sysmod.last_traceback)
+        self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
 
 
 class TestInteractiveConsoleLocalExit(unittest.TestCase, MockSys):
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index e05b95c2d60bad..d539a86ec262eb 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -2,7 +2,6 @@
 import contextlib
 import copy
 import io
-import locale
 import pickle
 import sys
 import unittest
@@ -1812,16 +1811,10 @@ def test_getwriter(self):
         self.assertRaises(TypeError, codecs.getwriter)
         self.assertRaises(LookupError, codecs.getwriter, "__spam__")
 
+    @support.run_with_locale('LC_CTYPE', 'tr_TR')
     def test_lookup_issue1813(self):
         # Issue #1813: under Turkish locales, lookup of some codecs failed
         # because 'I' is lowercased as "ı" (dotless i)
-        oldlocale = locale.setlocale(locale.LC_CTYPE)
-        self.addCleanup(locale.setlocale, locale.LC_CTYPE, oldlocale)
-        try:
-            locale.setlocale(locale.LC_CTYPE, 'tr_TR')
-        except locale.Error:
-            # Unsupported locale on this system
-            self.skipTest('test needs Turkish locale')
         c = codecs.lookup('ASCII')
         self.assertEqual(c.name, 'ascii')
 
diff --git a/Lib/test/test_compile.py b/Lib/test/test_compile.py
index 1f4368b15f473c..ed4e6265eac438 100644
--- a/Lib/test/test_compile.py
+++ b/Lib/test/test_compile.py
@@ -1,6 +1,7 @@
 import contextlib
 import dis
 import io
+import itertools
 import math
 import opcode
 import os
@@ -15,7 +16,7 @@
 import _testinternalcapi
 
 from test import support
-from test.support import (script_helper, requires_debug_ranges,
+from test.support import (script_helper, requires_debug_ranges, run_code,
                           requires_specialization, get_c_recursion_limit)
 from test.support.bytecode_helper import instructions_with_positions
 from test.support.os_helper import FakePath
@@ -475,6 +476,19 @@ def test_dead_code_with_except_handler_compiles(self):
                     x = 2
                """), '<eval>', 'exec')
 
+    def test_try_except_in_while_with_chained_condition_compiles(self):
+        # see gh-124871
+        compile(textwrap.dedent("""
+            name_1, name_2, name_3 = 1, 2, 3
+            while name_3 <= name_2 > name_1:
+                try:
+                    raise
+                except:
+                    pass
+                finally:
+                    pass
+            """), '<eval>', 'exec')
+
     def test_compile_invalid_namedexpr(self):
         # gh-109351
         m = ast.Module(
@@ -502,6 +516,58 @@ def test_compile_invalid_namedexpr(self):
         with self.assertRaisesRegex(TypeError, "NamedExpr target must be a Name"):
             compile(ast.fix_missing_locations(m), "<file>", "exec")
 
+    def test_compile_redundant_jumps_and_nops_after_moving_cold_blocks(self):
+        # See gh-120367
+        code=textwrap.dedent("""
+            try:
+                pass
+            except:
+                pass
+            else:
+                match name_2:
+                    case b'':
+                        pass
+            finally:
+                something
+            """)
+
+        tree = ast.parse(code)
+
+        # make all instruction locations the same to create redundancies
+        for node in ast.walk(tree):
+            if hasattr(node,"lineno"):
+                 del node.lineno
+                 del node.end_lineno
+                 del node.col_offset
+                 del node.end_col_offset
+
+        compile(ast.fix_missing_locations(tree), "<file>", "exec")
+
+    def test_compile_redundant_jump_after_convert_pseudo_ops(self):
+        # See gh-120367
+        code=textwrap.dedent("""
+            if name_2:
+                pass
+            else:
+                try:
+                    pass
+                except:
+                    pass
+            ~name_5
+            """)
+
+        tree = ast.parse(code)
+
+        # make all instruction locations the same to create redundancies
+        for node in ast.walk(tree):
+            if hasattr(node,"lineno"):
+                 del node.lineno
+                 del node.end_lineno
+                 del node.col_offset
+                 del node.end_col_offset
+
+        compile(ast.fix_missing_locations(tree), "<file>", "exec")
+
     def test_compile_ast(self):
         fname = __file__
         if fname.lower().endswith('pyc'):
@@ -818,6 +884,32 @@ def unused_code_at_end():
             'RETURN_CONST',
             list(dis.get_instructions(unused_code_at_end))[-1].opname)
 
+    @support.cpython_only
+    def test_docstring(self):
+        src = textwrap.dedent("""
+            def with_docstring():
+                "docstring"
+
+            def with_fstring():
+                f"not docstring"
+
+            def with_const_expression():
+                "also" + " not docstring"
+            """)
+
+        for opt in [0, 1, 2]:
+            with self.subTest(opt=opt):
+                code = compile(src, "<test>", "exec", optimize=opt)
+                ns = {}
+                exec(code, ns)
+
+                if opt < 2:
+                    self.assertEqual(ns['with_docstring'].__doc__, "docstring")
+                else:
+                    self.assertIsNone(ns['with_docstring'].__doc__)
+                self.assertIsNone(ns['with_fstring'].__doc__)
+                self.assertIsNone(ns['with_const_expression'].__doc__)
+
     @support.cpython_only
     def test_docstring_omitted(self):
         # See gh-115347
@@ -1120,7 +1212,7 @@ def return_genexp():
                     x
                     in
                     y)
-        genexp_lines = [0, 2, 0]
+        genexp_lines = [0, 4, 2, 0, 4]
 
         genexp_code = return_genexp.__code__.co_consts[1]
         code_lines = self.get_code_lines(genexp_code)
@@ -1409,6 +1501,16 @@ def f():
         for kw in ("except", "except*"):
             exec(code % kw, g, l);
 
+    def test_regression_gh_120225(self):
+        async def name_4():
+            match b'':
+                case True:
+                    pass
+                case name_5 if f'e':
+                    {name_3: name_4 async for name_2 in name_5}
+                case []:
+                    pass
+            [[]]
 
 @requires_debug_ranges()
 class TestSourcePositions(unittest.TestCase):
@@ -1565,7 +1667,7 @@ def test_multiline_generator_expression(self):
         self.assertOpcodeSourcePositionIs(compiled_code, 'JUMP_BACKWARD',
             line=1, end_line=2, column=1, end_column=8, occurrence=1)
         self.assertOpcodeSourcePositionIs(compiled_code, 'RETURN_CONST',
-            line=1, end_line=6, column=0, end_column=32, occurrence=1)
+            line=4, end_line=4, column=7, end_column=14, occurrence=1)
 
     def test_multiline_async_generator_expression(self):
         snippet = textwrap.dedent("""\
@@ -1966,13 +2068,76 @@ def test_load_super_attr(self):
             code, "LOAD_GLOBAL", line=3, end_line=3, column=4, end_column=9
         )
 
-
-class TestExpectedAttributes(unittest.TestCase):
+    def test_lambda_return_position(self):
+        snippets = [
+            "f = lambda: x",
+            "f = lambda: 42",
+            "f = lambda: 1 + 2",
+            "f = lambda: a + b",
+        ]
+        for snippet in snippets:
+            with self.subTest(snippet=snippet):
+                lamb = run_code(snippet)["f"]
+                positions = lamb.__code__.co_positions()
+                # assert that all positions are within the lambda
+                for i, pos in enumerate(positions):
+                    with self.subTest(i=i, pos=pos):
+                        start_line, end_line, start_col, end_col = pos
+                        if i == 0 and start_col == end_col == 0:
+                            # ignore the RESUME in the beginning
+                            continue
+                        self.assertEqual(start_line, 1)
+                        self.assertEqual(end_line, 1)
+                        code_start = snippet.find(":") + 2
+                        code_end = len(snippet)
+                        self.assertGreaterEqual(start_col, code_start)
+                        self.assertLessEqual(end_col, code_end)
+                        self.assertGreaterEqual(end_col, start_col)
+                        self.assertLessEqual(end_col, code_end)
+
+    def test_return_in_with_positions(self):
+        # See gh-98442
+        def f():
+            with xyz:
+                1
+                2
+                3
+                4
+                return R
+
+        # All instructions should have locations on a single line
+        for instr in dis.get_instructions(f):
+            start_line, end_line, _, _ = instr.positions
+            self.assertEqual(start_line, end_line)
+
+        # Expect three load None instructions for the no-exception __exit__ call,
+        # and one RETURN_VALUE.
+        # They should all have the locations of the context manager ('xyz').
+
+        load_none = [instr for instr in dis.get_instructions(f) if
+                     instr.opname == 'LOAD_CONST' and instr.argval is None]
+        return_value = [instr for instr in dis.get_instructions(f) if
+                        instr.opname == 'RETURN_VALUE']
+
+        self.assertEqual(len(load_none), 3)
+        self.assertEqual(len(return_value), 1)
+        for instr in load_none + return_value:
+            start_line, end_line, start_col, end_col = instr.positions
+            self.assertEqual(start_line, f.__code__.co_firstlineno + 1)
+            self.assertEqual(end_line, f.__code__.co_firstlineno + 1)
+            self.assertEqual(start_col, 17)
+            self.assertEqual(end_col, 20)
+
+
+class TestStaticAttributes(unittest.TestCase):
 
     def test_basic(self):
         class C:
             def f(self):
                 self.a = self.b = 42
+                # read fields are not included
+                self.f()
+                self.arr[3]
 
         self.assertIsInstance(C.__static_attributes__, tuple)
         self.assertEqual(sorted(C.__static_attributes__), ['a', 'b'])
@@ -2468,6 +2633,22 @@ def test_nested(self):
         self.compare_instructions(seq, [('LOAD_CONST', 1, 1, 0, 0, 0)])
         self.compare_instructions(seq.get_nested()[0], [('LOAD_CONST', 2, 2, 0, 0, 0)])
 
+    def test_static_attributes_are_sorted(self):
+        code = (
+            'class T:\n'
+            '    def __init__(self):\n'
+            '        self.{V1} = 10\n'
+            '        self.{V2} = 10\n'
+            '    def foo(self):\n'
+            '        self.{V3} = 10\n'
+        )
+        attributes = ("a", "b", "c")
+        for perm in itertools.permutations(attributes):
+            var_names = {f'V{i + 1}': name for i, name in enumerate(perm)}
+            ns = run_code(code.format(**var_names))
+            t = ns['T']
+            self.assertEqual(t.__static_attributes__, attributes)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_compileall.py b/Lib/test/test_compileall.py
index bf0fd051672db4..21ecebc088d3df 100644
--- a/Lib/test/test_compileall.py
+++ b/Lib/test/test_compileall.py
@@ -4,7 +4,6 @@
 import importlib.util
 import io
 import os
-import pathlib
 import py_compile
 import shutil
 import struct
@@ -31,6 +30,7 @@
 from test.support import script_helper
 from test.test_py_compile import without_source_date_epoch
 from test.test_py_compile import SourceDateEpochTestMeta
+from test.support.os_helper import FakePath
 
 
 def get_pyc(script, opt):
@@ -156,28 +156,28 @@ def test_compile_file_pathlike(self):
         self.assertFalse(os.path.isfile(self.bc_path))
         # we should also test the output
         with support.captured_stdout() as stdout:
-            self.assertTrue(compileall.compile_file(pathlib.Path(self.source_path)))
+            self.assertTrue(compileall.compile_file(FakePath(self.source_path)))
         self.assertRegex(stdout.getvalue(), r'Compiling ([^WindowsPath|PosixPath].*)')
         self.assertTrue(os.path.isfile(self.bc_path))
 
     def test_compile_file_pathlike_ddir(self):
         self.assertFalse(os.path.isfile(self.bc_path))
-        self.assertTrue(compileall.compile_file(pathlib.Path(self.source_path),
-                                                ddir=pathlib.Path('ddir_path'),
+        self.assertTrue(compileall.compile_file(FakePath(self.source_path),
+                                                ddir=FakePath('ddir_path'),
                                                 quiet=2))
         self.assertTrue(os.path.isfile(self.bc_path))
 
     def test_compile_file_pathlike_stripdir(self):
         self.assertFalse(os.path.isfile(self.bc_path))
-        self.assertTrue(compileall.compile_file(pathlib.Path(self.source_path),
-                                                stripdir=pathlib.Path('stripdir_path'),
+        self.assertTrue(compileall.compile_file(FakePath(self.source_path),
+                                                stripdir=FakePath('stripdir_path'),
                                                 quiet=2))
         self.assertTrue(os.path.isfile(self.bc_path))
 
     def test_compile_file_pathlike_prependdir(self):
         self.assertFalse(os.path.isfile(self.bc_path))
-        self.assertTrue(compileall.compile_file(pathlib.Path(self.source_path),
-                                                prependdir=pathlib.Path('prependdir_path'),
+        self.assertTrue(compileall.compile_file(FakePath(self.source_path),
+                                                prependdir=FakePath('prependdir_path'),
                                                 quiet=2))
         self.assertTrue(os.path.isfile(self.bc_path))
 
@@ -228,22 +228,22 @@ def test_optimize(self):
     def test_compile_dir_pathlike(self):
         self.assertFalse(os.path.isfile(self.bc_path))
         with support.captured_stdout() as stdout:
-            compileall.compile_dir(pathlib.Path(self.directory))
+            compileall.compile_dir(FakePath(self.directory))
         line = stdout.getvalue().splitlines()[0]
         self.assertRegex(line, r'Listing ([^WindowsPath|PosixPath].*)')
         self.assertTrue(os.path.isfile(self.bc_path))
 
     def test_compile_dir_pathlike_stripdir(self):
         self.assertFalse(os.path.isfile(self.bc_path))
-        self.assertTrue(compileall.compile_dir(pathlib.Path(self.directory),
-                                               stripdir=pathlib.Path('stripdir_path'),
+        self.assertTrue(compileall.compile_dir(FakePath(self.directory),
+                                               stripdir=FakePath('stripdir_path'),
                                                quiet=2))
         self.assertTrue(os.path.isfile(self.bc_path))
 
     def test_compile_dir_pathlike_prependdir(self):
         self.assertFalse(os.path.isfile(self.bc_path))
-        self.assertTrue(compileall.compile_dir(pathlib.Path(self.directory),
-                                               prependdir=pathlib.Path('prependdir_path'),
+        self.assertTrue(compileall.compile_dir(FakePath(self.directory),
+                                               prependdir=FakePath('prependdir_path'),
                                                quiet=2))
         self.assertTrue(os.path.isfile(self.bc_path))
 
@@ -766,6 +766,7 @@ def test_d_compile_error(self):
         rc, out, err = self.assertRunNotOK('-q', '-d', 'dinsdale', self.pkgdir)
         self.assertRegex(out, b'File "dinsdale')
 
+    @support.force_not_colorized
     def test_d_runtime_error(self):
         bazfn = script_helper.make_script(self.pkgdir, 'baz', 'raise Exception')
         self.assertRunOK('-q', '-d', 'dinsdale', self.pkgdir)
diff --git a/Lib/test/test_compiler_codegen.py b/Lib/test/test_compiler_codegen.py
index 1088b4aa9e624d..8a15c400a449e1 100644
--- a/Lib/test/test_compiler_codegen.py
+++ b/Lib/test/test_compiler_codegen.py
@@ -49,6 +49,7 @@ def test_for_loop(self):
             ('GET_ITER', None, 1),
             loop_lbl := self.Label(),
             ('FOR_ITER', exit_lbl := self.Label(), 1),
+            ('NOP', None, 1, 1),
             ('STORE_NAME', 1, 1),
             ('LOAD_NAME', 2, 2),
             ('PUSH_NULL', None, 2),
@@ -151,5 +152,8 @@ def g():
 
     def test_syntax_error__return_not_in_function(self):
         snippet = "return 42"
-        with self.assertRaisesRegex(SyntaxError, "'return' outside function"):
+        with self.assertRaisesRegex(SyntaxError, "'return' outside function") as cm:
             self.codegen_test(snippet, None)
+        self.assertIsNone(cm.exception.text)
+        self.assertEqual(cm.exception.offset, 1)
+        self.assertEqual(cm.exception.end_offset, 10)
diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py
index fa3017b24e16c8..a991040d811afb 100644
--- a/Lib/test/test_complex.py
+++ b/Lib/test/test_complex.py
@@ -1,11 +1,12 @@
 import unittest
 import sys
 from test import support
+from test.support.testcase import ComplexesAreIdenticalMixin
 from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
                                INVALID_UNDERSCORE_LITERALS)
 
 from random import random
-from math import atan2, isnan, copysign
+from math import isnan, copysign
 import operator
 
 INF = float("inf")
@@ -21,7 +22,28 @@
     (1, 0+0j),
 )
 
-class ComplexTest(unittest.TestCase):
+class WithIndex:
+    def __init__(self, value):
+        self.value = value
+    def __index__(self):
+        return self.value
+
+class WithFloat:
+    def __init__(self, value):
+        self.value = value
+    def __float__(self):
+        return self.value
+
+class ComplexSubclass(complex):
+    pass
+
+class WithComplex:
+    def __init__(self, value):
+        self.value = value
+    def __complex__(self):
+        return self.value
+
+class ComplexTest(ComplexesAreIdenticalMixin, unittest.TestCase):
 
     def assertAlmostEqual(self, a, b):
         if isinstance(a, complex):
@@ -50,29 +72,6 @@ def assertCloseAbs(self, x, y, eps=1e-9):
         # check that relative difference < eps
         self.assertTrue(abs((x-y)/y) < eps)
 
-    def assertFloatsAreIdentical(self, x, y):
-        """assert that floats x and y are identical, in the sense that:
-        (1) both x and y are nans, or
-        (2) both x and y are infinities, with the same sign, or
-        (3) both x and y are zeros, with the same sign, or
-        (4) x and y are both finite and nonzero, and x == y
-
-        """
-        msg = 'floats {!r} and {!r} are not identical'
-
-        if isnan(x) or isnan(y):
-            if isnan(x) and isnan(y):
-                return
-        elif x == y:
-            if x != 0.0:
-                return
-            # both zero; check that signs match
-            elif copysign(1.0, x) == copysign(1.0, y):
-                return
-            else:
-                msg += ': zeros have different signs'
-        self.fail(msg.format(x, y))
-
     def assertClose(self, x, y, eps=1e-9):
         """Return true iff complexes x and y "are close"."""
         self.assertCloseAbs(x.real, y.real, eps)
@@ -302,6 +301,11 @@ def test_pow(self):
                     except OverflowError:
                         pass
 
+        # gh-113841: possible undefined division by 0 in _Py_c_pow()
+        x, y = 9j, 33j**3
+        with self.assertRaises(OverflowError):
+            x**y
+
     def test_pow_with_small_integer_exponents(self):
         # Check that small integer exponents are handled identically
         # regardless of their type.
@@ -340,137 +344,90 @@ def test_conjugate(self):
         self.assertClose(complex(5.3, 9.8).conjugate(), 5.3-9.8j)
 
     def test_constructor(self):
-        class NS:
-            def __init__(self, value): self.value = value
-            def __complex__(self): return self.value
-        self.assertEqual(complex(NS(1+10j)), 1+10j)
-        self.assertRaises(TypeError, complex, NS(None))
-        self.assertRaises(TypeError, complex, {})
-        self.assertRaises(TypeError, complex, NS(1.5))
-        self.assertRaises(TypeError, complex, NS(1))
-        self.assertRaises(TypeError, complex, object())
-        self.assertRaises(TypeError, complex, NS(4.25+0.5j), object())
-
-        self.assertAlmostEqual(complex("1+10j"), 1+10j)
-        self.assertAlmostEqual(complex(10), 10+0j)
-        self.assertAlmostEqual(complex(10.0), 10+0j)
-        self.assertAlmostEqual(complex(10), 10+0j)
-        self.assertAlmostEqual(complex(10+0j), 10+0j)
-        self.assertAlmostEqual(complex(1,10), 1+10j)
-        self.assertAlmostEqual(complex(1,10), 1+10j)
-        self.assertAlmostEqual(complex(1,10.0), 1+10j)
-        self.assertAlmostEqual(complex(1,10), 1+10j)
-        self.assertAlmostEqual(complex(1,10), 1+10j)
-        self.assertAlmostEqual(complex(1,10.0), 1+10j)
-        self.assertAlmostEqual(complex(1.0,10), 1+10j)
-        self.assertAlmostEqual(complex(1.0,10), 1+10j)
-        self.assertAlmostEqual(complex(1.0,10.0), 1+10j)
-        self.assertAlmostEqual(complex(3.14+0j), 3.14+0j)
-        self.assertAlmostEqual(complex(3.14), 3.14+0j)
-        self.assertAlmostEqual(complex(314), 314.0+0j)
-        self.assertAlmostEqual(complex(314), 314.0+0j)
-        self.assertAlmostEqual(complex(3.14+0j, 0j), 3.14+0j)
-        self.assertAlmostEqual(complex(3.14, 0.0), 3.14+0j)
-        self.assertAlmostEqual(complex(314, 0), 314.0+0j)
-        self.assertAlmostEqual(complex(314, 0), 314.0+0j)
-        self.assertAlmostEqual(complex(0j, 3.14j), -3.14+0j)
-        self.assertAlmostEqual(complex(0.0, 3.14j), -3.14+0j)
-        self.assertAlmostEqual(complex(0j, 3.14), 3.14j)
-        self.assertAlmostEqual(complex(0.0, 3.14), 3.14j)
-        self.assertAlmostEqual(complex("1"), 1+0j)
-        self.assertAlmostEqual(complex("1j"), 1j)
-        self.assertAlmostEqual(complex(),  0)
-        self.assertAlmostEqual(complex("-1"), -1)
-        self.assertAlmostEqual(complex("+1"), +1)
-        self.assertAlmostEqual(complex("(1+2j)"), 1+2j)
-        self.assertAlmostEqual(complex("(1.3+2.2j)"), 1.3+2.2j)
-        self.assertAlmostEqual(complex("3.14+1J"), 3.14+1j)
-        self.assertAlmostEqual(complex(" ( +3.14-6J )"), 3.14-6j)
-        self.assertAlmostEqual(complex(" ( +3.14-J )"), 3.14-1j)
-        self.assertAlmostEqual(complex(" ( +3.14+j )"), 3.14+1j)
-        self.assertAlmostEqual(complex("J"), 1j)
-        self.assertAlmostEqual(complex("( j )"), 1j)
-        self.assertAlmostEqual(complex("+J"), 1j)
-        self.assertAlmostEqual(complex("( -j)"), -1j)
-        self.assertAlmostEqual(complex('1e-500'), 0.0 + 0.0j)
-        self.assertAlmostEqual(complex('-1e-500j'), 0.0 - 0.0j)
-        self.assertAlmostEqual(complex('-1e-500+1e-500j'), -0.0 + 0.0j)
-        self.assertEqual(complex('1-1j'), 1.0 - 1j)
-        self.assertEqual(complex('1J'), 1j)
-
-        class complex2(complex): pass
-        self.assertAlmostEqual(complex(complex2(1+1j)), 1+1j)
-        self.assertAlmostEqual(complex(real=17, imag=23), 17+23j)
-        self.assertAlmostEqual(complex(real=17+23j), 17+23j)
-        self.assertAlmostEqual(complex(real=17+23j, imag=23), 17+46j)
-        self.assertAlmostEqual(complex(real=1+2j, imag=3+4j), -3+5j)
+        def check(z, x, y):
+            self.assertIs(type(z), complex)
+            self.assertFloatsAreIdentical(z.real, x)
+            self.assertFloatsAreIdentical(z.imag, y)
+
+        check(complex(),  0.0, 0.0)
+        check(complex(10), 10.0, 0.0)
+        check(complex(4.25), 4.25, 0.0)
+        check(complex(4.25+0j), 4.25, 0.0)
+        check(complex(4.25+0.5j), 4.25, 0.5)
+        check(complex(ComplexSubclass(4.25+0.5j)), 4.25, 0.5)
+        check(complex(WithComplex(4.25+0.5j)), 4.25, 0.5)
+
+        check(complex(1, 10), 1.0, 10.0)
+        check(complex(1, 10.0), 1.0, 10.0)
+        check(complex(1, 4.25), 1.0, 4.25)
+        check(complex(1.0, 10), 1.0, 10.0)
+        check(complex(4.25, 10), 4.25, 10.0)
+        check(complex(1.0, 10.0), 1.0, 10.0)
+        check(complex(4.25, 0.5), 4.25, 0.5)
+
+        check(complex(4.25+0j, 0), 4.25, 0.0)
+        check(complex(ComplexSubclass(4.25+0j), 0), 4.25, 0.0)
+        check(complex(WithComplex(4.25+0j), 0), 4.25, 0.0)
+        check(complex(4.25j, 0), 0.0, 4.25)
+        check(complex(0j, 4.25), 0.0, 4.25)
+        check(complex(0, 4.25+0j), 0.0, 4.25)
+        check(complex(0, ComplexSubclass(4.25+0j)), 0.0, 4.25)
+        with self.assertRaisesRegex(TypeError,
+                "second argument must be a number, not 'WithComplex'"):
+            complex(0, WithComplex(4.25+0j))
+        check(complex(0.0, 4.25j), -4.25, 0.0)
+        check(complex(4.25+0j, 0j), 4.25, 0.0)
+        check(complex(4.25j, 0j), 0.0, 4.25)
+        check(complex(0j, 4.25+0j), 0.0, 4.25)
+        check(complex(0j, 4.25j), -4.25, 0.0)
+
+        check(complex(real=4.25), 4.25, 0.0)
+        check(complex(real=4.25+0j), 4.25, 0.0)
+        check(complex(real=4.25+1.5j), 4.25, 1.5)
+        check(complex(imag=1.5), 0.0, 1.5)
+        check(complex(real=4.25, imag=1.5), 4.25, 1.5)
+        check(complex(4.25, imag=1.5), 4.25, 1.5)
 
         # check that the sign of a zero in the real or imaginary part
-        # is preserved when constructing from two floats.  (These checks
-        # are harmless on systems without support for signed zeros.)
-        def split_zeros(x):
-            """Function that produces different results for 0. and -0."""
-            return atan2(x, -1.)
-
-        self.assertEqual(split_zeros(complex(1., 0.).imag), split_zeros(0.))
-        self.assertEqual(split_zeros(complex(1., -0.).imag), split_zeros(-0.))
-        self.assertEqual(split_zeros(complex(0., 1.).real), split_zeros(0.))
-        self.assertEqual(split_zeros(complex(-0., 1.).real), split_zeros(-0.))
-
-        c = 3.14 + 1j
-        self.assertTrue(complex(c) is c)
-        del c
-
-        self.assertRaises(TypeError, complex, "1", "1")
-        self.assertRaises(TypeError, complex, 1, "1")
-
-        # SF bug 543840:  complex(string) accepts strings with \0
-        # Fixed in 2.3.
-        self.assertRaises(ValueError, complex, '1+1j\0j')
-
-        self.assertRaises(TypeError, int, 5+3j)
-        self.assertRaises(TypeError, int, 5+3j)
-        self.assertRaises(TypeError, float, 5+3j)
-        self.assertRaises(ValueError, complex, "")
-        self.assertRaises(TypeError, complex, None)
-        self.assertRaisesRegex(TypeError, "not 'NoneType'", complex, None)
-        self.assertRaises(ValueError, complex, "\0")
-        self.assertRaises(ValueError, complex, "3\09")
-        self.assertRaises(TypeError, complex, "1", "2")
-        self.assertRaises(TypeError, complex, "1", 42)
-        self.assertRaises(TypeError, complex, 1, "2")
-        self.assertRaises(ValueError, complex, "1+")
-        self.assertRaises(ValueError, complex, "1+1j+1j")
-        self.assertRaises(ValueError, complex, "--")
-        self.assertRaises(ValueError, complex, "(1+2j")
-        self.assertRaises(ValueError, complex, "1+2j)")
-        self.assertRaises(ValueError, complex, "1+(2j)")
-        self.assertRaises(ValueError, complex, "(1+2j)123")
-        self.assertRaises(ValueError, complex, "x")
-        self.assertRaises(ValueError, complex, "1j+2")
-        self.assertRaises(ValueError, complex, "1e1ej")
-        self.assertRaises(ValueError, complex, "1e++1ej")
-        self.assertRaises(ValueError, complex, ")1+2j(")
-        self.assertRaisesRegex(
-            TypeError,
+        # is preserved when constructing from two floats.
+        for x in 1.0, -1.0:
+            for y in 0.0, -0.0:
+                check(complex(x, y), x, y)
+                check(complex(y, x), y, x)
+
+        c = complex(4.25, 1.5)
+        self.assertIs(complex(c), c)
+        c2 = ComplexSubclass(c)
+        self.assertEqual(c2, c)
+        self.assertIs(type(c2), ComplexSubclass)
+        del c, c2
+
+        self.assertRaisesRegex(TypeError,
+            "first argument must be a string or a number, not 'dict'",
+            complex, {})
+        self.assertRaisesRegex(TypeError,
+            "first argument must be a string or a number, not 'NoneType'",
+            complex, None)
+        self.assertRaisesRegex(TypeError,
             "first argument must be a string or a number, not 'dict'",
-            complex, {1:2}, 1)
-        self.assertRaisesRegex(
-            TypeError,
+            complex, {1:2}, 0)
+        self.assertRaisesRegex(TypeError,
+            "can't take second arg if first is a string",
+            complex, '1', 0)
+        self.assertRaisesRegex(TypeError,
             "second argument must be a number, not 'dict'",
-            complex, 1, {1:2})
-        # the following three are accepted by Python 2.6
-        self.assertRaises(ValueError, complex, "1..1j")
-        self.assertRaises(ValueError, complex, "1.11.1j")
-        self.assertRaises(ValueError, complex, "1e1.1j")
-
-        # check that complex accepts long unicode strings
-        self.assertEqual(type(complex("1"*500)), complex)
-        # check whitespace processing
-        self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
-        # Invalid unicode string
-        # See bpo-34087
-        self.assertRaises(ValueError, complex, '\u3053\u3093\u306b\u3061\u306f')
+            complex, 0, {1:2})
+        self.assertRaisesRegex(TypeError,
+                "second arg can't be a string",
+            complex, 0, '1')
+
+        self.assertRaises(TypeError, complex, WithComplex(1.5))
+        self.assertRaises(TypeError, complex, WithComplex(1))
+        self.assertRaises(TypeError, complex, WithComplex(None))
+        self.assertRaises(TypeError, complex, WithComplex(4.25+0j), object())
+        self.assertRaises(TypeError, complex, WithComplex(1.5), object())
+        self.assertRaises(TypeError, complex, WithComplex(1), object())
+        self.assertRaises(TypeError, complex, WithComplex(None), object())
 
         class EvilExc(Exception):
             pass
@@ -481,33 +438,33 @@ def __complex__(self):
 
         self.assertRaises(EvilExc, complex, evilcomplex())
 
-        class float2:
-            def __init__(self, value):
-                self.value = value
-            def __float__(self):
-                return self.value
-
-        self.assertAlmostEqual(complex(float2(42.)), 42)
-        self.assertAlmostEqual(complex(real=float2(17.), imag=float2(23.)), 17+23j)
-        self.assertRaises(TypeError, complex, float2(None))
-
-        class MyIndex:
-            def __init__(self, value):
-                self.value = value
-            def __index__(self):
-                return self.value
-
-        self.assertAlmostEqual(complex(MyIndex(42)), 42.0+0.0j)
-        self.assertAlmostEqual(complex(123, MyIndex(42)), 123.0+42.0j)
-        self.assertRaises(OverflowError, complex, MyIndex(2**2000))
-        self.assertRaises(OverflowError, complex, 123, MyIndex(2**2000))
+        check(complex(WithFloat(4.25)), 4.25, 0.0)
+        check(complex(WithFloat(4.25), 1.5), 4.25, 1.5)
+        check(complex(1.5, WithFloat(4.25)), 1.5, 4.25)
+        self.assertRaises(TypeError, complex, WithFloat(42))
+        self.assertRaises(TypeError, complex, WithFloat(42), 1.5)
+        self.assertRaises(TypeError, complex, 1.5, WithFloat(42))
+        self.assertRaises(TypeError, complex, WithFloat(None))
+        self.assertRaises(TypeError, complex, WithFloat(None), 1.5)
+        self.assertRaises(TypeError, complex, 1.5, WithFloat(None))
+
+        check(complex(WithIndex(42)), 42.0, 0.0)
+        check(complex(WithIndex(42), 1.5), 42.0, 1.5)
+        check(complex(1.5, WithIndex(42)), 1.5, 42.0)
+        self.assertRaises(OverflowError, complex, WithIndex(2**2000))
+        self.assertRaises(OverflowError, complex, WithIndex(2**2000), 1.5)
+        self.assertRaises(OverflowError, complex, 1.5, WithIndex(2**2000))
+        self.assertRaises(TypeError, complex, WithIndex(None))
+        self.assertRaises(TypeError, complex, WithIndex(None), 1.5)
+        self.assertRaises(TypeError, complex, 1.5, WithIndex(None))
 
         class MyInt:
             def __int__(self):
                 return 42
 
         self.assertRaises(TypeError, complex, MyInt())
-        self.assertRaises(TypeError, complex, 123, MyInt())
+        self.assertRaises(TypeError, complex, MyInt(), 1.5)
+        self.assertRaises(TypeError, complex, 1.5, MyInt())
 
         class complex0(complex):
             """Test usage of __complex__() when inheriting from 'complex'"""
@@ -527,9 +484,9 @@ class complex2(complex):
             def __complex__(self):
                 return None
 
-        self.assertEqual(complex(complex0(1j)), 42j)
+        check(complex(complex0(1j)), 0.0, 42.0)
         with self.assertWarns(DeprecationWarning):
-            self.assertEqual(complex(complex1(1j)), 2j)
+            check(complex(complex1(1j)), 0.0, 2.0)
         self.assertRaises(TypeError, complex, complex2(1j))
 
     def test___complex__(self):
@@ -537,36 +494,93 @@ def test___complex__(self):
         self.assertEqual(z.__complex__(), z)
         self.assertEqual(type(z.__complex__()), complex)
 
-        class complex_subclass(complex):
-            pass
-
-        z = complex_subclass(3 + 4j)
+        z = ComplexSubclass(3 + 4j)
         self.assertEqual(z.__complex__(), 3 + 4j)
         self.assertEqual(type(z.__complex__()), complex)
 
     @support.requires_IEEE_754
     def test_constructor_special_numbers(self):
-        class complex2(complex):
-            pass
         for x in 0.0, -0.0, INF, -INF, NAN:
             for y in 0.0, -0.0, INF, -INF, NAN:
                 with self.subTest(x=x, y=y):
                     z = complex(x, y)
                     self.assertFloatsAreIdentical(z.real, x)
                     self.assertFloatsAreIdentical(z.imag, y)
-                    z = complex2(x, y)
-                    self.assertIs(type(z), complex2)
+                    z = ComplexSubclass(x, y)
+                    self.assertIs(type(z), ComplexSubclass)
                     self.assertFloatsAreIdentical(z.real, x)
                     self.assertFloatsAreIdentical(z.imag, y)
-                    z = complex(complex2(x, y))
+                    z = complex(ComplexSubclass(x, y))
                     self.assertIs(type(z), complex)
                     self.assertFloatsAreIdentical(z.real, x)
                     self.assertFloatsAreIdentical(z.imag, y)
-                    z = complex2(complex(x, y))
-                    self.assertIs(type(z), complex2)
+                    z = ComplexSubclass(complex(x, y))
+                    self.assertIs(type(z), ComplexSubclass)
                     self.assertFloatsAreIdentical(z.real, x)
                     self.assertFloatsAreIdentical(z.imag, y)
 
+    def test_constructor_from_string(self):
+        def check(z, x, y):
+            self.assertIs(type(z), complex)
+            self.assertFloatsAreIdentical(z.real, x)
+            self.assertFloatsAreIdentical(z.imag, y)
+
+        check(complex("1"), 1.0, 0.0)
+        check(complex("1j"), 0.0, 1.0)
+        check(complex("-1"), -1.0, 0.0)
+        check(complex("+1"), 1.0, 0.0)
+        check(complex("1+2j"), 1.0, 2.0)
+        check(complex("(1+2j)"), 1.0, 2.0)
+        check(complex("(1.5+4.25j)"), 1.5, 4.25)
+        check(complex("4.25+1J"), 4.25, 1.0)
+        check(complex(" ( +4.25-6J )"), 4.25, -6.0)
+        check(complex(" ( +4.25-J )"), 4.25, -1.0)
+        check(complex(" ( +4.25+j )"), 4.25, 1.0)
+        check(complex("J"), 0.0, 1.0)
+        check(complex("( j )"), 0.0, 1.0)
+        check(complex("+J"), 0.0, 1.0)
+        check(complex("( -j)"), 0.0, -1.0)
+        check(complex('1-1j'), 1.0, -1.0)
+        check(complex('1J'), 0.0, 1.0)
+
+        check(complex('1e-500'), 0.0, 0.0)
+        check(complex('-1e-500j'), 0.0, -0.0)
+        check(complex('1e-500+1e-500j'), 0.0, 0.0)
+        check(complex('-1e-500+1e-500j'), -0.0, 0.0)
+        check(complex('1e-500-1e-500j'), 0.0, -0.0)
+        check(complex('-1e-500-1e-500j'), -0.0, -0.0)
+
+        # SF bug 543840:  complex(string) accepts strings with \0
+        # Fixed in 2.3.
+        self.assertRaises(ValueError, complex, '1+1j\0j')
+        self.assertRaises(ValueError, complex, "")
+        self.assertRaises(ValueError, complex, "\0")
+        self.assertRaises(ValueError, complex, "3\09")
+        self.assertRaises(ValueError, complex, "1+")
+        self.assertRaises(ValueError, complex, "1+1j+1j")
+        self.assertRaises(ValueError, complex, "--")
+        self.assertRaises(ValueError, complex, "(1+2j")
+        self.assertRaises(ValueError, complex, "1+2j)")
+        self.assertRaises(ValueError, complex, "1+(2j)")
+        self.assertRaises(ValueError, complex, "(1+2j)123")
+        self.assertRaises(ValueError, complex, "x")
+        self.assertRaises(ValueError, complex, "1j+2")
+        self.assertRaises(ValueError, complex, "1e1ej")
+        self.assertRaises(ValueError, complex, "1e++1ej")
+        self.assertRaises(ValueError, complex, ")1+2j(")
+        # the following three are accepted by Python 2.6
+        self.assertRaises(ValueError, complex, "1..1j")
+        self.assertRaises(ValueError, complex, "1.11.1j")
+        self.assertRaises(ValueError, complex, "1e1.1j")
+
+        # check that complex accepts long unicode strings
+        self.assertIs(type(complex("1"*500)), complex)
+        # check whitespace processing
+        self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
+        # Invalid unicode string
+        # See bpo-34087
+        self.assertRaises(ValueError, complex, '\u3053\u3093\u306b\u3061\u306f')
+
     def test_constructor_negative_nans_from_string(self):
         self.assertEqual(copysign(1., complex("-nan").real), -1.)
         self.assertEqual(copysign(1., complex("-nanj").imag), -1.)
@@ -588,7 +602,7 @@ def test_underscores(self):
     def test_hash(self):
         for x in range(-30, 30):
             self.assertEqual(hash(x), hash(complex(x, 0)))
-            x /= 3.0    # now check against floating point
+            x /= 3.0    # now check against floating-point
             self.assertEqual(hash(x), hash(complex(x, 0.)))
 
         self.assertNotEqual(hash(2000005 - 1j), -1)
@@ -645,9 +659,6 @@ def test(v, expected, test_fn=self.assertEqual):
         test(complex(-0., -0.), "(-0-0j)")
 
     def test_pos(self):
-        class ComplexSubclass(complex):
-            pass
-
         self.assertEqual(+(1+6j), 1+6j)
         self.assertEqual(+ComplexSubclass(1, 6), 1+6j)
         self.assertIs(type(+ComplexSubclass(1, 6)), complex)
@@ -667,8 +678,8 @@ def test_getnewargs(self):
     def test_plus_minus_0j(self):
         # test that -0j and 0j literals are not identified
         z1, z2 = 0j, -0j
-        self.assertEqual(atan2(z1.imag, -1.), atan2(0., -1.))
-        self.assertEqual(atan2(z2.imag, -1.), atan2(-0., -1.))
+        self.assertFloatsAreIdentical(z1.imag, 0.0)
+        self.assertFloatsAreIdentical(z2.imag, -0.0)
 
     @support.requires_IEEE_754
     def test_negated_imaginary_literal(self):
@@ -703,8 +714,7 @@ def test_repr_roundtrip(self):
             for y in vals:
                 z = complex(x, y)
                 roundtrip = complex(repr(z))
-                self.assertFloatsAreIdentical(z.real, roundtrip.real)
-                self.assertFloatsAreIdentical(z.imag, roundtrip.imag)
+                self.assertComplexesAreIdentical(z, roundtrip)
 
         # if we predefine some constants, then eval(repr(z)) should
         # also work, except that it might change the sign of zeros
diff --git a/Lib/test/test_concurrent_futures/test_deadlock.py b/Lib/test/test_concurrent_futures/test_deadlock.py
index 3c30c4558c0b3e..dcc1d68563a4fb 100644
--- a/Lib/test/test_concurrent_futures/test_deadlock.py
+++ b/Lib/test/test_concurrent_futures/test_deadlock.py
@@ -145,7 +145,7 @@ def test_exit_at_task_unpickle(self):
         self._check_crash(BrokenProcessPool, id, ExitAtUnpickle())
 
     def test_error_at_task_unpickle(self):
-        # gh-109832: Restore stderr overriden by _raise_error_ignore_stderr()
+        # gh-109832: Restore stderr overridden by _raise_error_ignore_stderr()
         self.addCleanup(setattr, sys, 'stderr', sys.stderr)
 
         # Check problem occurring while unpickling a task on workers
@@ -183,7 +183,7 @@ def test_error_during_result_pickle_on_worker(self):
         self._check_crash(PicklingError, _return_instance, ErrorAtPickle)
 
     def test_error_during_result_unpickle_in_result_handler(self):
-        # gh-109832: Restore stderr overriden by _raise_error_ignore_stderr()
+        # gh-109832: Restore stderr overridden by _raise_error_ignore_stderr()
         self.addCleanup(setattr, sys, 'stderr', sys.stderr)
 
         # Check problem occurring while unpickling a task in
diff --git a/Lib/test/test_concurrent_futures/test_init.py b/Lib/test/test_concurrent_futures/test_init.py
index a36f592b79b7cf..df640929309318 100644
--- a/Lib/test/test_concurrent_futures/test_init.py
+++ b/Lib/test/test_concurrent_futures/test_init.py
@@ -139,6 +139,7 @@ def _test(self, test_class):
     def test_spawn(self):
         self._test(ProcessPoolSpawnFailingInitializerTest)
 
+    @support.skip_if_sanitizer("TSAN doesn't support threads after fork", thread=True)
     def test_forkserver(self):
         self._test(ProcessPoolForkserverFailingInitializerTest)
 
diff --git a/Lib/test/test_concurrent_futures/test_thread_pool.py b/Lib/test/test_concurrent_futures/test_thread_pool.py
index 2b5bea9f4055a2..4324241b374967 100644
--- a/Lib/test/test_concurrent_futures/test_thread_pool.py
+++ b/Lib/test/test_concurrent_futures/test_thread_pool.py
@@ -66,6 +66,25 @@ def submit(pool):
                 with futures.ProcessPoolExecutor(1, mp_context=mp.get_context('fork')) as workers:
                     workers.submit(tuple)
 
+    @support.requires_fork()
+    @unittest.skipUnless(hasattr(os, 'register_at_fork'), 'need os.register_at_fork')
+    def test_process_fork_from_a_threadpool(self):
+        # bpo-43944: clear concurrent.futures.thread._threads_queues after fork,
+        # otherwise child process will try to join parent thread
+        def fork_process_and_return_exitcode():
+            # Ignore the warning about fork with threads.
+            with self.assertWarnsRegex(DeprecationWarning,
+                                       r"use of fork\(\) may lead to deadlocks in the child"):
+                p = mp.get_context('fork').Process(target=lambda: 1)
+                p.start()
+            p.join()
+            return p.exitcode
+
+        with futures.ThreadPoolExecutor(1) as pool:
+            process_exitcode = pool.submit(fork_process_and_return_exitcode).result()
+
+        self.assertEqual(process_exitcode, 0)
+
     def test_executor_map_current_future_cancel(self):
         stop_event = threading.Event()
         log = []
diff --git a/Lib/test/test_configparser.py b/Lib/test/test_configparser.py
index fe09472db89cd2..a934e493a76391 100644
--- a/Lib/test/test_configparser.py
+++ b/Lib/test/test_configparser.py
@@ -2,7 +2,6 @@
 import configparser
 import io
 import os
-import pathlib
 import textwrap
 import unittest
 
@@ -745,12 +744,12 @@ def test_read_returns_file_list(self):
         self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
         # check when we pass only a Path object:
         cf = self.newconfig()
-        parsed_files = cf.read(pathlib.Path(file1), encoding="utf-8")
+        parsed_files = cf.read(os_helper.FakePath(file1), encoding="utf-8")
         self.assertEqual(parsed_files, [file1])
         self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
         # check when we passed both a filename and a Path object:
         cf = self.newconfig()
-        parsed_files = cf.read([pathlib.Path(file1), file1], encoding="utf-8")
+        parsed_files = cf.read([os_helper.FakePath(file1), file1], encoding="utf-8")
         self.assertEqual(parsed_files, [file1, file1])
         self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
         # check when we pass only missing files:
diff --git a/Lib/test/test_contextlib.py b/Lib/test/test_contextlib.py
index 36c3abca80f894..cf6519598037e9 100644
--- a/Lib/test/test_contextlib.py
+++ b/Lib/test/test_contextlib.py
@@ -444,12 +444,10 @@ class FileContextTestCase(unittest.TestCase):
     def testWithOpen(self):
         tfn = tempfile.mktemp()
         try:
-            f = None
             with open(tfn, "w", encoding="utf-8") as f:
                 self.assertFalse(f.closed)
                 f.write("Booh\n")
             self.assertTrue(f.closed)
-            f = None
             with self.assertRaises(ZeroDivisionError):
                 with open(tfn, "r", encoding="utf-8") as f:
                     self.assertFalse(f.closed)
diff --git a/Lib/test/test_copy.py b/Lib/test/test_copy.py
index 89102373759ca0..3dec64cc9a2414 100644
--- a/Lib/test/test_copy.py
+++ b/Lib/test/test_copy.py
@@ -972,6 +972,10 @@ class C:
             copy.replace(c, x=1, error=2)
 
 
+class MiscTestCase(unittest.TestCase):
+    def test__all__(self):
+        support.check__all__(self, copy, not_exported={"dispatch_table", "error"})
+
 def global_foo(x, y): return x+y
 
 
diff --git a/Lib/test/test_cppext/__init__.py b/Lib/test/test_cppext/__init__.py
index 00a2840d49c779..d5195227308fec 100644
--- a/Lib/test/test_cppext/__init__.py
+++ b/Lib/test/test_cppext/__init__.py
@@ -41,12 +41,17 @@ def test_build_cpp11(self):
     def test_build_cpp14(self):
         self.check_build('_testcpp14ext', std='c++14')
 
-    def check_build(self, extension_name, std=None):
+    @support.requires_gil_enabled('incompatible with Free Threading')
+    def test_build_limited(self):
+        self.check_build('_testcppext_limited', limited=True)
+
+    def check_build(self, extension_name, std=None, limited=False):
         venv_dir = 'env'
         with support.setup_venv_with_pip_setuptools_wheel(venv_dir) as python_exe:
-            self._check_build(extension_name, python_exe, std=std)
+            self._check_build(extension_name, python_exe,
+                              std=std, limited=limited)
 
-    def _check_build(self, extension_name, python_exe, std):
+    def _check_build(self, extension_name, python_exe, std, limited):
         pkg_dir = 'pkg'
         os.mkdir(pkg_dir)
         shutil.copy(SETUP, os.path.join(pkg_dir, os.path.basename(SETUP)))
@@ -56,6 +61,8 @@ def run_cmd(operation, cmd):
             env = os.environ.copy()
             if std:
                 env['CPYTHON_TEST_CPP_STD'] = std
+            if limited:
+                env['CPYTHON_TEST_LIMITED'] = '1'
             env['CPYTHON_TEST_EXT_NAME'] = extension_name
             if support.verbose:
                 print('Run:', ' '.join(map(shlex.quote, cmd)))
@@ -76,6 +83,8 @@ def run_cmd(operation, cmd):
         cmd = [python_exe, '-X', 'dev',
                '-m', 'pip', 'install', '--no-build-isolation',
                os.path.abspath(pkg_dir)]
+        if support.verbose:
+            cmd.append('-v')
         run_cmd('Install', cmd)
 
         # Do a reference run. Until we test that running python
diff --git a/Lib/test/test_cppext/extension.cpp b/Lib/test/test_cppext/extension.cpp
index ab485b629b7788..500d5918145c00 100644
--- a/Lib/test/test_cppext/extension.cpp
+++ b/Lib/test/test_cppext/extension.cpp
@@ -62,6 +62,7 @@ test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
     Py_ssize_t refcnt = Py_REFCNT(obj);
     assert(refcnt >= 1);
 
+#ifndef Py_LIMITED_API
     // gh-92138: For backward compatibility, functions of Python C API accepts
     // "const PyObject*". Check that using it does not emit C++ compiler
     // warnings.
@@ -74,6 +75,7 @@ test_api_casts(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
     assert(PyTuple_GET_SIZE(const_obj) == 2);
     PyObject *one = PyTuple_GET_ITEM(const_obj, 0);
     assert(PyLong_AsLong(one) == 1);
+#endif
 
     // gh-92898: StrongRef doesn't inherit from PyObject but has an operator to
     // cast to PyObject*.
@@ -106,6 +108,12 @@ test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
     }
 
     assert(PyUnicode_Check(str));
+
+    assert(PyUnicode_GetLength(str) == 3);
+    assert(PyUnicode_ReadChar(str, 0) == 'a');
+    assert(PyUnicode_ReadChar(str, 1) == 'b');
+
+#ifndef Py_LIMITED_API
     assert(PyUnicode_GET_LENGTH(str) == 3);
 
     // gh-92800: test PyUnicode_READ()
@@ -121,6 +129,7 @@ test_unicode(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
     assert(PyUnicode_READ(ukind, const_data, 2) == 'c');
 
     assert(PyUnicode_READ_CHAR(str, 1) == 'b');
+#endif
 
     Py_DECREF(str);
     Py_RETURN_NONE;
diff --git a/Lib/test/test_cppext/setup.py b/Lib/test/test_cppext/setup.py
index 80b3e0d5212f7b..019ff18446a2eb 100644
--- a/Lib/test/test_cppext/setup.py
+++ b/Lib/test/test_cppext/setup.py
@@ -10,6 +10,7 @@
 
 
 SOURCE = 'extension.cpp'
+
 if not support.MS_WINDOWS:
     # C++ compiler flags for GCC and clang
     CPPFLAGS = [
@@ -19,14 +20,20 @@
         '-Werror',
     ]
 else:
-    # Don't pass any compiler flag to MSVC
-    CPPFLAGS = []
+    # MSVC compiler flags
+    CPPFLAGS = [
+        # Display warnings level 1 to 4
+        '/W4',
+        # Treat all compiler warnings as compiler errors
+        '/WX',
+    ]
 
 
 def main():
     cppflags = list(CPPFLAGS)
     std = os.environ.get("CPYTHON_TEST_CPP_STD", "")
     module_name = os.environ["CPYTHON_TEST_EXT_NAME"]
+    limited = bool(os.environ.get("CPYTHON_TEST_LIMITED", ""))
 
     cppflags = list(CPPFLAGS)
     cppflags.append(f'-DMODULE_NAME={module_name}')
@@ -53,6 +60,11 @@ def main():
         # CC env var overrides sysconfig CC variable in setuptools
         os.environ['CC'] = cmd
 
+    # Define Py_LIMITED_API macro
+    if limited:
+        version = sys.hexversion
+        cppflags.append(f'-DPy_LIMITED_API={version:#x}')
+
     # On Windows, add PCbuild\amd64\ to include and library directories
     include_dirs = []
     library_dirs = []
diff --git a/Lib/test/test_cprofile.py b/Lib/test/test_cprofile.py
index 27e8a767903777..65720871d5c5f0 100644
--- a/Lib/test/test_cprofile.py
+++ b/Lib/test/test_cprofile.py
@@ -30,6 +30,59 @@ def test_bad_counter_during_dealloc(self):
 
             self.assertEqual(cm.unraisable.exc_type, TypeError)
 
+    def test_crash_with_not_enough_args(self):
+        # gh-126220
+        import _lsprof
+
+        for profile in [_lsprof.Profiler(), cProfile.Profile()]:
+            for method in [
+                "_pystart_callback",
+                "_pyreturn_callback",
+                "_ccall_callback",
+                "_creturn_callback",
+            ]:
+                with self.subTest(profile=profile, method=method):
+                    method_obj = getattr(profile, method)
+                    with self.assertRaises(TypeError):
+                        method_obj()  # should not crash
+
+    def test_evil_external_timer(self):
+        # gh-120289
+        # Disabling profiler in external timer should not crash
+        import _lsprof
+        class EvilTimer():
+            def __init__(self, disable_count):
+                self.count = 0
+                self.disable_count = disable_count
+
+            def __call__(self):
+                self.count += 1
+                if self.count == self.disable_count:
+                    profiler_with_evil_timer.disable()
+                return self.count
+
+        # this will trigger external timer to disable profiler at
+        # call event - in initContext in _lsprof.c
+        with support.catch_unraisable_exception() as cm:
+            profiler_with_evil_timer = _lsprof.Profiler(EvilTimer(1))
+            profiler_with_evil_timer.enable()
+            # Make a call to trigger timer
+            (lambda: None)()
+            profiler_with_evil_timer.disable()
+            profiler_with_evil_timer.clear()
+            self.assertEqual(cm.unraisable.exc_type, RuntimeError)
+
+        # this will trigger external timer to disable profiler at
+        # return event - in Stop in _lsprof.c
+        with support.catch_unraisable_exception() as cm:
+            profiler_with_evil_timer = _lsprof.Profiler(EvilTimer(2))
+            profiler_with_evil_timer.enable()
+            # Make a call to trigger timer
+            (lambda: None)()
+            profiler_with_evil_timer.disable()
+            profiler_with_evil_timer.clear()
+            self.assertEqual(cm.unraisable.exc_type, RuntimeError)
+
     def test_profile_enable_disable(self):
         prof = self.profilerclass()
         # Make sure we clean ourselves up if the test fails for some reason.
diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index d74ab7e016f78c..ce5c03659f1979 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -454,6 +454,10 @@ def test_read_quoting(self):
                           quoting=csv.QUOTE_STRINGS)
         self._read_test(['1,@,3,@,5'], [['1', ',3,', '5']], quotechar='@')
         self._read_test(['1,\0,3,\0,5'], [['1', ',3,', '5']], quotechar='\0')
+        self._read_test(['1\\.5,\\.5,.5'], [[1.5, 0.5, 0.5]],
+                        quoting=csv.QUOTE_NONNUMERIC, escapechar='\\')
+        self._read_test(['1\\.5,\\.5,"\\.5"'], [[1.5, 0.5, ".5"]],
+                        quoting=csv.QUOTE_STRINGS, escapechar='\\')
 
     def test_read_skipinitialspace(self):
         self._read_test(['no space, space,  spaces,\ttab'],
@@ -1099,6 +1103,12 @@ class mydialect(csv.Dialect):
         mydialect.quoting = None
         self.assertRaises(csv.Error, mydialect)
 
+        mydialect.quoting = 42
+        with self.assertRaises(csv.Error) as cm:
+            mydialect()
+        self.assertEqual(str(cm.exception),
+                         'bad "quoting" value')
+
         mydialect.doublequote = True
         mydialect.quoting = csv.QUOTE_ALL
         mydialect.quotechar = '"'
diff --git a/Lib/test/test_ctypes/test_arrays.py b/Lib/test/test_ctypes/test_arrays.py
index 3568cf97f40b50..c80fdff5de685d 100644
--- a/Lib/test/test_ctypes/test_arrays.py
+++ b/Lib/test/test_ctypes/test_arrays.py
@@ -1,8 +1,7 @@
 import ctypes
 import sys
 import unittest
-import warnings
-from ctypes import (Structure, Array, sizeof, addressof,
+from ctypes import (Structure, Array, ARRAY, sizeof, addressof,
                     create_string_buffer, create_unicode_buffer,
                     c_char, c_wchar, c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
                     c_long, c_ulonglong, c_float, c_double, c_longdouble)
@@ -17,13 +16,6 @@
           c_long, c_ulonglong, c_float, c_double, c_longdouble
 
 
-def ARRAY(*args):
-    # ignore DeprecationWarning in tests
-    with warnings.catch_warnings():
-        warnings.simplefilter('ignore', DeprecationWarning)
-        return ctypes.ARRAY(*args)
-
-
 class ArrayTestCase(unittest.TestCase):
     def test_inheritance_hierarchy(self):
         self.assertEqual(Array.mro(), [Array, _CData, object])
@@ -253,7 +245,7 @@ def test_empty_element_struct(self):
         class EmptyStruct(Structure):
             _fields_ = []
 
-        obj = (EmptyStruct * 2)()  # bpo37188: Floating point exception
+        obj = (EmptyStruct * 2)()  # bpo37188: Floating-point exception
         self.assertEqual(sizeof(obj), 0)
 
     def test_empty_element_array(self):
@@ -261,7 +253,7 @@ class EmptyArray(Array):
             _type_ = c_int
             _length_ = 0
 
-        obj = (EmptyArray * 2)()  # bpo37188: Floating point exception
+        obj = (EmptyArray * 2)()  # bpo37188: Floating-point exception
         self.assertEqual(sizeof(obj), 0)
 
     def test_bpo36504_signed_int_overflow(self):
@@ -275,10 +267,6 @@ def test_bpo36504_signed_int_overflow(self):
     def test_large_array(self, size):
         c_char * size
 
-    def test_deprecation(self):
-        with self.assertWarns(DeprecationWarning):
-            CharArray = ctypes.ARRAY(c_char, 3)
-
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_ctypes/test_as_parameter.py b/Lib/test/test_ctypes/test_as_parameter.py
index cc62b1a22a3b06..c5e1840b0eb7af 100644
--- a/Lib/test/test_ctypes/test_as_parameter.py
+++ b/Lib/test/test_ctypes/test_as_parameter.py
@@ -198,8 +198,16 @@ class A:
 
         a = A()
         a._as_parameter_ = a
-        with self.assertRaises(RecursionError):
-            c_int.from_param(a)
+        for c_type in (
+            ctypes.c_wchar_p,
+            ctypes.c_char_p,
+            ctypes.c_void_p,
+            ctypes.c_int,  # PyCSimpleType
+            POINT,  # CDataType
+        ):
+            with self.subTest(c_type=c_type):
+                with self.assertRaises(RecursionError):
+                    c_type.from_param(a)
 
 
 class AsParamWrapper:
diff --git a/Lib/test/test_ctypes/test_c_simple_type_meta.py b/Lib/test/test_ctypes/test_c_simple_type_meta.py
new file mode 100644
index 00000000000000..eb77d6d7782478
--- /dev/null
+++ b/Lib/test/test_ctypes/test_c_simple_type_meta.py
@@ -0,0 +1,152 @@
+import unittest
+import ctypes
+from ctypes import POINTER, c_void_p
+
+from ._support import PyCSimpleType
+
+
+class PyCSimpleTypeAsMetaclassTest(unittest.TestCase):
+    def tearDown(self):
+        # to not leak references, we must clean _pointer_type_cache
+        ctypes._reset_cache()
+
+    def test_creating_pointer_in_dunder_new_1(self):
+        # Test metaclass whose instances are C types; when the type is
+        # created it automatically creates a pointer type for itself.
+        # The pointer type is also an instance of the metaclass.
+        # Such an implementation is used in `IUnknown` of the `comtypes`
+        # project. See gh-124520.
+
+        class ct_meta(type):
+            def __new__(cls, name, bases, namespace):
+                self = super().__new__(cls, name, bases, namespace)
+
+                # Avoid recursion: don't set up a pointer to
+                # a pointer (to a pointer...)
+                if bases == (c_void_p,):
+                    # When creating PtrBase itself, the name
+                    # is not yet available
+                    return self
+                if issubclass(self, PtrBase):
+                    return self
+
+                if bases == (object,):
+                    ptr_bases = (self, PtrBase)
+                else:
+                    ptr_bases = (self, POINTER(bases[0]))
+                p = p_meta(f"POINTER({self.__name__})", ptr_bases, {})
+                ctypes._pointer_type_cache[self] = p
+                return self
+
+        class p_meta(PyCSimpleType, ct_meta):
+            pass
+
+        class PtrBase(c_void_p, metaclass=p_meta):
+            pass
+
+        class CtBase(object, metaclass=ct_meta):
+            pass
+
+        class Sub(CtBase):
+            pass
+
+        class Sub2(Sub):
+            pass
+
+        self.assertIsInstance(POINTER(Sub2), p_meta)
+        self.assertTrue(issubclass(POINTER(Sub2), Sub2))
+        self.assertTrue(issubclass(POINTER(Sub2), POINTER(Sub)))
+        self.assertTrue(issubclass(POINTER(Sub), POINTER(CtBase)))
+
+    def test_creating_pointer_in_dunder_new_2(self):
+        # A simpler variant of the above, used in `CoClass` of the `comtypes`
+        # project.
+
+        class ct_meta(type):
+            def __new__(cls, name, bases, namespace):
+                self = super().__new__(cls, name, bases, namespace)
+                if isinstance(self, p_meta):
+                    return self
+                p = p_meta(f"POINTER({self.__name__})", (self, c_void_p), {})
+                ctypes._pointer_type_cache[self] = p
+                return self
+
+        class p_meta(PyCSimpleType, ct_meta):
+            pass
+
+        class Core(object):
+            pass
+
+        class CtBase(Core, metaclass=ct_meta):
+            pass
+
+        class Sub(CtBase):
+            pass
+
+        self.assertIsInstance(POINTER(Sub), p_meta)
+        self.assertTrue(issubclass(POINTER(Sub), Sub))
+
+    def test_creating_pointer_in_dunder_init_1(self):
+        class ct_meta(type):
+            def __init__(self, name, bases, namespace):
+                super().__init__(name, bases, namespace)
+
+                # Avoid recursion.
+                # (See test_creating_pointer_in_dunder_new_1)
+                if bases == (c_void_p,):
+                    return
+                if issubclass(self, PtrBase):
+                    return
+                if bases == (object,):
+                    ptr_bases = (self, PtrBase)
+                else:
+                    ptr_bases = (self, POINTER(bases[0]))
+                p = p_meta(f"POINTER({self.__name__})", ptr_bases, {})
+                ctypes._pointer_type_cache[self] = p
+
+        class p_meta(PyCSimpleType, ct_meta):
+            pass
+
+        class PtrBase(c_void_p, metaclass=p_meta):
+            pass
+
+        class CtBase(object, metaclass=ct_meta):
+            pass
+
+        class Sub(CtBase):
+            pass
+
+        class Sub2(Sub):
+            pass
+
+        self.assertIsInstance(POINTER(Sub2), p_meta)
+        self.assertTrue(issubclass(POINTER(Sub2), Sub2))
+        self.assertTrue(issubclass(POINTER(Sub2), POINTER(Sub)))
+        self.assertTrue(issubclass(POINTER(Sub), POINTER(CtBase)))
+
+    def test_creating_pointer_in_dunder_init_2(self):
+        class ct_meta(type):
+            def __init__(self, name, bases, namespace):
+                super().__init__(name, bases, namespace)
+
+                # Avoid recursion.
+                # (See test_creating_pointer_in_dunder_new_2)
+                if isinstance(self, p_meta):
+                    return
+                p = p_meta(f"POINTER({self.__name__})", (self, c_void_p), {})
+                ctypes._pointer_type_cache[self] = p
+
+        class p_meta(PyCSimpleType, ct_meta):
+            pass
+
+        class Core(object):
+            pass
+
+        class CtBase(Core, metaclass=ct_meta):
+            pass
+
+        class Sub(CtBase):
+            pass
+
+        self.assertIsInstance(POINTER(Sub), p_meta)
+        self.assertTrue(issubclass(POINTER(Sub), Sub))
diff --git a/Lib/test/test_ctypes/test_dlerror.py b/Lib/test/test_ctypes/test_dlerror.py
new file mode 100644
index 00000000000000..6bf492399cbf95
--- /dev/null
+++ b/Lib/test/test_ctypes/test_dlerror.py
@@ -0,0 +1,176 @@
+import _ctypes
+import os
+import platform
+import sys
+import test.support
+import unittest
+from ctypes import CDLL, c_int
+from ctypes.util import find_library
+
+
+FOO_C = r"""
+#include <unistd.h>
+
+/* This is a 'GNU indirect function' (IFUNC) that will be called by
+   dlsym() to resolve the symbol "foo" to an address. Typically, such
+   a function would return the address of an actual function, but it
+   can also just return NULL.  For some background on IFUNCs, see
+   https://willnewton.name/uncategorized/using-gnu-indirect-functions.
+
+   Adapted from Michael Kerrisk's answer: https://stackoverflow.com/a/53590014.
+*/
+
+asm (".type foo STT_GNU_IFUNC");
+
+void *foo(void)
+{
+    write($DESCRIPTOR, "OK", 2);
+    return NULL;
+}
+"""
+
+
+@unittest.skipUnless(sys.platform.startswith('linux'),
+                     'test requires GNU IFUNC support')
+class TestNullDlsym(unittest.TestCase):
+    """GH-126554: Ensure that we catch NULL dlsym return values
+
+    In rare cases, such as when using GNU IFUNCs, dlsym(),
+    the C function that ctypes' CDLL uses to get the address
+    of symbols, can return NULL.
+
+    The objective way of telling if an error during symbol
+    lookup happened is to call glibc's dlerror() and check
+    for a non-NULL return value.
+
+    However, there can be cases where dlsym() returns NULL
+    and dlerror() is also NULL, meaning that glibc did not
+    encounter any error.
+
+    In the case of ctypes, we subjectively treat that as
+    an error, and throw a relevant exception.
+
+    This test case ensures that we correctly enforce
+    this 'dlsym returned NULL -> throw Error' rule.
+    """
+
+    def test_null_dlsym(self):
+        import subprocess
+        import tempfile
+
+        retcode = subprocess.call(["gcc", "--version"],
+                                  stdout=subprocess.DEVNULL,
+                                  stderr=subprocess.DEVNULL)
+        if retcode != 0:
+            self.skipTest("gcc is missing")
+
+        pipe_r, pipe_w = os.pipe()
+        self.addCleanup(os.close, pipe_r)
+        self.addCleanup(os.close, pipe_w)
+
+        with tempfile.TemporaryDirectory() as d:
+            # Create a C file with a GNU Indirect Function (FOO_C)
+            # and compile it into a shared library.
+            srcname = os.path.join(d, 'foo.c')
+            dstname = os.path.join(d, 'libfoo.so')
+            with open(srcname, 'w') as f:
+                f.write(FOO_C.replace('$DESCRIPTOR', str(pipe_w)))
+            args = ['gcc', '-fPIC', '-shared', '-o', dstname, srcname]
+            p = subprocess.run(args, capture_output=True)
+
+            if p.returncode != 0:
+                # IFUNC is not supported on all architectures.
+                if platform.machine() == 'x86_64':
+                    # It should be supported here. Something else went wrong.
+                    p.check_returncode()
+                else:
+                    # IFUNC might not be supported on this machine.
+                    self.skipTest(f"could not compile indirect function: {p}")
+
+            # Case #1: Test 'PyCFuncPtr_FromDll' from Modules/_ctypes/_ctypes.c
+            L = CDLL(dstname)
+            with self.assertRaisesRegex(AttributeError, "function 'foo' not found"):
+                # Try accessing the 'foo' symbol.
+                # It should resolve via dlsym() to NULL,
+                # and since we subjectively treat NULL
+                # addresses as errors, we should get
+                # an error.
+                L.foo
+
+            # Assert that the IFUNC was called
+            self.assertEqual(os.read(pipe_r, 2), b'OK')
+
+            # Case #2: Test 'CDataType_in_dll_impl' from Modules/_ctypes/_ctypes.c
+            with self.assertRaisesRegex(ValueError, "symbol 'foo' not found"):
+                c_int.in_dll(L, "foo")
+
+            # Assert that the IFUNC was called
+            self.assertEqual(os.read(pipe_r, 2), b'OK')
+
+            # Case #3: Test 'py_dl_sym' from Modules/_ctypes/callproc.c
+            dlopen = test.support.get_attribute(_ctypes, 'dlopen')
+            dlsym = test.support.get_attribute(_ctypes, 'dlsym')
+            L = dlopen(dstname)
+            with self.assertRaisesRegex(OSError, "symbol 'foo' not found"):
+                dlsym(L, "foo")
+
+            # Assert that the IFUNC was called
+            self.assertEqual(os.read(pipe_r, 2), b'OK')
+
+
+@unittest.skipUnless(os.name != 'nt', 'test requires dlerror() calls')
+class TestLocalization(unittest.TestCase):
+
+    @staticmethod
+    def configure_locales(func):
+        return test.support.run_with_locale(
+            'LC_ALL',
+            'fr_FR.iso88591', 'ja_JP.sjis', 'zh_CN.gbk',
+            'fr_FR.utf8', 'en_US.utf8',
+            '',
+        )(func)
+
+    @classmethod
+    def setUpClass(cls):
+        cls.libc_filename = find_library("c")
+        if cls.libc_filename is None:
+            raise unittest.SkipTest('cannot find libc')
+
+    @configure_locales
+    def test_localized_error_from_dll(self):
+        dll = CDLL(self.libc_filename)
+        with self.assertRaises(AttributeError):
+            dll.this_name_does_not_exist
+
+    @configure_locales
+    def test_localized_error_in_dll(self):
+        dll = CDLL(self.libc_filename)
+        with self.assertRaises(ValueError):
+            c_int.in_dll(dll, 'this_name_does_not_exist')
+
+    @unittest.skipUnless(hasattr(_ctypes, 'dlopen'),
+                         'test requires _ctypes.dlopen()')
+    @configure_locales
+    def test_localized_error_dlopen(self):
+        missing_filename = b'missing\xff.so'
+        # Depending whether the locale, we may encode '\xff' differently
+        # but we are only interested in avoiding a UnicodeDecodeError
+        # when reporting the dlerror() error message which contains
+        # the localized filename.
+        filename_pattern = r'missing.*?\.so'
+        with self.assertRaisesRegex(OSError, filename_pattern):
+            _ctypes.dlopen(missing_filename, 2)
+
+    @unittest.skipUnless(hasattr(_ctypes, 'dlopen'),
+                         'test requires _ctypes.dlopen()')
+    @unittest.skipUnless(hasattr(_ctypes, 'dlsym'),
+                         'test requires _ctypes.dlsym()')
+    @configure_locales
+    def test_localized_error_dlsym(self):
+        dll = _ctypes.dlopen(self.libc_filename)
+        with self.assertRaises(OSError):
+            _ctypes.dlsym(dll, 'this_name_does_not_exist')
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_ctypes/test_loading.py b/Lib/test/test_ctypes/test_loading.py
index b25e81b65cf103..fc1eecb77e17e3 100644
--- a/Lib/test/test_ctypes/test_loading.py
+++ b/Lib/test/test_ctypes/test_loading.py
@@ -42,10 +42,7 @@ def test_load(self):
                 self.skipTest('could not find library to load')
         CDLL(test_lib)
         CDLL(os.path.basename(test_lib))
-        class CTypesTestPathLikeCls:
-            def __fspath__(self):
-                return test_lib
-        CDLL(CTypesTestPathLikeCls())
+        CDLL(os_helper.FakePath(test_lib))
         self.assertRaises(OSError, CDLL, self.unknowndll)
 
     def test_load_version(self):
diff --git a/Lib/test/test_ctypes/test_struct_fields.py b/Lib/test/test_ctypes/test_struct_fields.py
index 7adab794809def..fd9509757a39ad 100644
--- a/Lib/test/test_ctypes/test_struct_fields.py
+++ b/Lib/test/test_ctypes/test_struct_fields.py
@@ -1,4 +1,5 @@
 import unittest
+import sys
 from ctypes import Structure, Union, sizeof, c_char, c_int
 from ._support import (CField, Py_TPFLAGS_DISALLOW_INSTANTIATION,
                        Py_TPFLAGS_IMMUTABLETYPE)
@@ -75,6 +76,27 @@ def __init_subclass__(cls, **kwargs):
                                     'ctypes state is not initialized'):
             class Subclass(BrokenStructure): ...
 
+    def test_max_field_size_gh126937(self):
+        # Classes for big structs should be created successfully.
+        # (But they most likely can't be instantiated.)
+        # The size must fit in Py_ssize_t.
+
+        class X(Structure):
+            _fields_ = [('char', c_char),]
+        max_field_size = sys.maxsize
+
+        class Y(Structure):
+            _fields_ = [('largeField', X * max_field_size)]
+        class Z(Structure):
+            _fields_ = [('largeField', c_char * max_field_size)]
+
+        with self.assertRaises(OverflowError):
+            class TooBig(Structure):
+                _fields_ = [('largeField', X * (max_field_size + 1))]
+        with self.assertRaises(OverflowError):
+            class TooBig(Structure):
+                _fields_ = [('largeField', c_char * (max_field_size + 1))]
+
     # __set__ and __get__ should raise a TypeError in case their self
     # argument is not a ctype instance.
     def test___set__(self):
diff --git a/Lib/test/test_ctypes/test_win32_com_foreign_func.py b/Lib/test/test_ctypes/test_win32_com_foreign_func.py
new file mode 100644
index 00000000000000..8d217fc17efa02
--- /dev/null
+++ b/Lib/test/test_ctypes/test_win32_com_foreign_func.py
@@ -0,0 +1,286 @@
+import ctypes
+import gc
+import sys
+import unittest
+from ctypes import POINTER, byref, c_void_p
+from ctypes.wintypes import BYTE, DWORD, WORD
+
+if sys.platform != "win32":
+    raise unittest.SkipTest("Windows-specific test")
+
+
+from _ctypes import COMError, CopyComPointer
+from ctypes import HRESULT
+
+
+COINIT_APARTMENTTHREADED = 0x2
+CLSCTX_SERVER = 5
+S_OK = 0
+OUT = 2
+TRUE = 1
+E_NOINTERFACE = -2147467262
+
+
+class GUID(ctypes.Structure):
+    # https://learn.microsoft.com/en-us/windows/win32/api/guiddef/ns-guiddef-guid
+    _fields_ = [
+        ("Data1", DWORD),
+        ("Data2", WORD),
+        ("Data3", WORD),
+        ("Data4", BYTE * 8),
+    ]
+
+
+def create_proto_com_method(name, index, restype, *argtypes):
+    proto = ctypes.WINFUNCTYPE(restype, *argtypes)
+
+    def make_method(*args):
+        foreign_func = proto(index, name, *args)
+
+        def call(self, *args, **kwargs):
+            return foreign_func(self, *args, **kwargs)
+
+        return call
+
+    return make_method
+
+
+def create_guid(name):
+    guid = GUID()
+    # https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-clsidfromstring
+    ole32.CLSIDFromString(name, byref(guid))
+    return guid
+
+
+def is_equal_guid(guid1, guid2):
+    # https://learn.microsoft.com/en-us/windows/win32/api/objbase/nf-objbase-isequalguid
+    return ole32.IsEqualGUID(byref(guid1), byref(guid2))
+
+
+ole32 = ctypes.oledll.ole32
+
+IID_IUnknown = create_guid("{00000000-0000-0000-C000-000000000046}")
+IID_IStream = create_guid("{0000000C-0000-0000-C000-000000000046}")
+IID_IPersist = create_guid("{0000010C-0000-0000-C000-000000000046}")
+CLSID_ShellLink = create_guid("{00021401-0000-0000-C000-000000000046}")
+
+# https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nf-unknwn-iunknown-queryinterface(refiid_void)
+proto_query_interface = create_proto_com_method(
+    "QueryInterface", 0, HRESULT, POINTER(GUID), POINTER(c_void_p)
+)
+# https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nf-unknwn-iunknown-addref
+proto_add_ref = create_proto_com_method("AddRef", 1, ctypes.c_long)
+# https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nf-unknwn-iunknown-release
+proto_release = create_proto_com_method("Release", 2, ctypes.c_long)
+# https://learn.microsoft.com/en-us/windows/win32/api/objidl/nf-objidl-ipersist-getclassid
+proto_get_class_id = create_proto_com_method(
+    "GetClassID", 3, HRESULT, POINTER(GUID)
+)
+
+
+def create_shelllink_persist(typ):
+    ppst = typ()
+    # https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-cocreateinstance
+    ole32.CoCreateInstance(
+        byref(CLSID_ShellLink),
+        None,
+        CLSCTX_SERVER,
+        byref(IID_IPersist),
+        byref(ppst),
+    )
+    return ppst
+
+
+class ForeignFunctionsThatWillCallComMethodsTests(unittest.TestCase):
+    def setUp(self):
+        # https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-coinitializeex
+        ole32.CoInitializeEx(None, COINIT_APARTMENTTHREADED)
+
+    def tearDown(self):
+        # https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-couninitialize
+        ole32.CoUninitialize()
+        gc.collect()
+
+    def test_without_paramflags_and_iid(self):
+        class IUnknown(c_void_p):
+            QueryInterface = proto_query_interface()
+            AddRef = proto_add_ref()
+            Release = proto_release()
+
+        class IPersist(IUnknown):
+            GetClassID = proto_get_class_id()
+
+        ppst = create_shelllink_persist(IPersist)
+
+        clsid = GUID()
+        hr_getclsid = ppst.GetClassID(byref(clsid))
+        self.assertEqual(S_OK, hr_getclsid)
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        self.assertEqual(2, ppst.AddRef())
+        self.assertEqual(3, ppst.AddRef())
+
+        punk = IUnknown()
+        hr_qi = ppst.QueryInterface(IID_IUnknown, punk)
+        self.assertEqual(S_OK, hr_qi)
+        self.assertEqual(3, punk.Release())
+
+        with self.assertRaises(OSError) as e:
+            punk.QueryInterface(IID_IStream, IUnknown())
+        self.assertEqual(E_NOINTERFACE, e.exception.winerror)
+
+        self.assertEqual(2, ppst.Release())
+        self.assertEqual(1, ppst.Release())
+        self.assertEqual(0, ppst.Release())
+
+    def test_with_paramflags_and_without_iid(self):
+        class IUnknown(c_void_p):
+            QueryInterface = proto_query_interface(None)
+            AddRef = proto_add_ref()
+            Release = proto_release()
+
+        class IPersist(IUnknown):
+            GetClassID = proto_get_class_id(((OUT, "pClassID"),))
+
+        ppst = create_shelllink_persist(IPersist)
+
+        clsid = ppst.GetClassID()
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        punk = IUnknown()
+        hr_qi = ppst.QueryInterface(IID_IUnknown, punk)
+        self.assertEqual(S_OK, hr_qi)
+        self.assertEqual(1, punk.Release())
+
+        with self.assertRaises(OSError) as e:
+            ppst.QueryInterface(IID_IStream, IUnknown())
+        self.assertEqual(E_NOINTERFACE, e.exception.winerror)
+
+        self.assertEqual(0, ppst.Release())
+
+    def test_with_paramflags_and_iid(self):
+        class IUnknown(c_void_p):
+            QueryInterface = proto_query_interface(None, IID_IUnknown)
+            AddRef = proto_add_ref()
+            Release = proto_release()
+
+        class IPersist(IUnknown):
+            GetClassID = proto_get_class_id(((OUT, "pClassID"),), IID_IPersist)
+
+        ppst = create_shelllink_persist(IPersist)
+
+        clsid = ppst.GetClassID()
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        punk = IUnknown()
+        hr_qi = ppst.QueryInterface(IID_IUnknown, punk)
+        self.assertEqual(S_OK, hr_qi)
+        self.assertEqual(1, punk.Release())
+
+        with self.assertRaises(COMError) as e:
+            ppst.QueryInterface(IID_IStream, IUnknown())
+        self.assertEqual(E_NOINTERFACE, e.exception.hresult)
+
+        self.assertEqual(0, ppst.Release())
+
+
+class CopyComPointerTests(unittest.TestCase):
+    def setUp(self):
+        ole32.CoInitializeEx(None, COINIT_APARTMENTTHREADED)
+
+        class IUnknown(c_void_p):
+            QueryInterface = proto_query_interface(None, IID_IUnknown)
+            AddRef = proto_add_ref()
+            Release = proto_release()
+
+        class IPersist(IUnknown):
+            GetClassID = proto_get_class_id(((OUT, "pClassID"),), IID_IPersist)
+
+        self.IUnknown = IUnknown
+        self.IPersist = IPersist
+
+    def tearDown(self):
+        ole32.CoUninitialize()
+        gc.collect()
+
+    def test_both_are_null(self):
+        src = self.IPersist()
+        dst = self.IPersist()
+
+        hr = CopyComPointer(src, byref(dst))
+
+        self.assertEqual(S_OK, hr)
+
+        self.assertIsNone(src.value)
+        self.assertIsNone(dst.value)
+
+    def test_src_is_nonnull_and_dest_is_null(self):
+        # The reference count of the COM pointer created by `CoCreateInstance`
+        # is initially 1.
+        src = create_shelllink_persist(self.IPersist)
+        dst = self.IPersist()
+
+        # `CopyComPointer` calls `AddRef` explicitly in the C implementation.
+        # The refcount of `src` is incremented from 1 to 2 here.
+        hr = CopyComPointer(src, byref(dst))
+
+        self.assertEqual(S_OK, hr)
+        self.assertEqual(src.value, dst.value)
+
+        # This indicates that the refcount was 2 before the `Release` call.
+        self.assertEqual(1, src.Release())
+
+        clsid = dst.GetClassID()
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        self.assertEqual(0, dst.Release())
+
+    def test_src_is_null_and_dest_is_nonnull(self):
+        src = self.IPersist()
+        dst_orig = create_shelllink_persist(self.IPersist)
+        dst = self.IPersist()
+        CopyComPointer(dst_orig, byref(dst))
+        self.assertEqual(1, dst_orig.Release())
+
+        clsid = dst.GetClassID()
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        # This does NOT affects the refcount of `dst_orig`.
+        hr = CopyComPointer(src, byref(dst))
+
+        self.assertEqual(S_OK, hr)
+        self.assertIsNone(dst.value)
+
+        with self.assertRaises(ValueError):
+            dst.GetClassID()  # NULL COM pointer access
+
+        # This indicates that the refcount was 1 before the `Release` call.
+        self.assertEqual(0, dst_orig.Release())
+
+    def test_both_are_nonnull(self):
+        src = create_shelllink_persist(self.IPersist)
+        dst_orig = create_shelllink_persist(self.IPersist)
+        dst = self.IPersist()
+        CopyComPointer(dst_orig, byref(dst))
+        self.assertEqual(1, dst_orig.Release())
+
+        self.assertEqual(dst.value, dst_orig.value)
+        self.assertNotEqual(src.value, dst.value)
+
+        hr = CopyComPointer(src, byref(dst))
+
+        self.assertEqual(S_OK, hr)
+        self.assertEqual(src.value, dst.value)
+        self.assertNotEqual(dst.value, dst_orig.value)
+
+        self.assertEqual(1, src.Release())
+
+        clsid = dst.GetClassID()
+        self.assertEqual(TRUE, is_equal_guid(CLSID_ShellLink, clsid))
+
+        self.assertEqual(0, dst.Release())
+        self.assertEqual(0, dst_orig.Release())
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_curses.py b/Lib/test/test_curses.py
index 83d10dd8579074..cc3aa561cd4c42 100644
--- a/Lib/test/test_curses.py
+++ b/Lib/test/test_curses.py
@@ -1081,6 +1081,14 @@ def test_resize_term(self):
         self.assertEqual(curses.LINES, lines)
         self.assertEqual(curses.COLS, cols)
 
+        with self.assertRaises(OverflowError):
+            curses.resize_term(35000, 1)
+        with self.assertRaises(OverflowError):
+            curses.resize_term(1, 35000)
+        # GH-120378: Overflow failure in resize_term() causes refresh to fail
+        tmp = curses.initscr()
+        tmp.erase()
+
     @requires_curses_func('resizeterm')
     def test_resizeterm(self):
         curses.update_lines_cols()
@@ -1095,6 +1103,14 @@ def test_resizeterm(self):
         self.assertEqual(curses.LINES, lines)
         self.assertEqual(curses.COLS, cols)
 
+        with self.assertRaises(OverflowError):
+            curses.resizeterm(35000, 1)
+        with self.assertRaises(OverflowError):
+            curses.resizeterm(1, 35000)
+        # GH-120378: Overflow failure in resizeterm() causes refresh to fail
+        tmp = curses.initscr()
+        tmp.erase()
+
     def test_ungetch(self):
         curses.ungetch(b'A')
         self.assertEqual(self.stdscr.getkey(), 'A')
diff --git a/Lib/test/test_dataclasses/__init__.py b/Lib/test/test_dataclasses/__init__.py
index 832e5672c77d0d..876dbc773285aa 100644
--- a/Lib/test/test_dataclasses/__init__.py
+++ b/Lib/test/test_dataclasses/__init__.py
@@ -17,6 +17,7 @@
 from typing import ClassVar, Any, List, Union, Tuple, Dict, Generic, TypeVar, Optional, Protocol, DefaultDict
 from typing import get_type_hints
 from collections import deque, OrderedDict, namedtuple, defaultdict
+from copy import deepcopy
 from functools import total_ordering
 
 import typing       # Needed for the string "typing.ClassVar[int]" to work as an annotation.
@@ -1317,6 +1318,29 @@ def __post_init__(self, init_base, init_derived):
         c = C(10, 11, 50, 51)
         self.assertEqual(vars(c), {'x': 21, 'y': 101})
 
+    def test_init_var_name_shadowing(self):
+        # Because dataclasses rely exclusively on `__annotations__` for
+        # handling InitVar and `__annotations__` preserves shadowed definitions,
+        # you can actually shadow an InitVar with a method or property.
+        #
+        # This only works when there is no default value; `dataclasses` uses the
+        # actual name (which will be bound to the shadowing method) for default
+        # values.
+        @dataclass
+        class C:
+            shadowed: InitVar[int]
+            _shadowed: int = field(init=False)
+
+            def __post_init__(self, shadowed):
+                self._shadowed = shadowed * 2
+
+            @property
+            def shadowed(self):
+                return self._shadowed * 3
+
+        c = C(5)
+        self.assertEqual(c.shadowed, 30)
+
     def test_default_factory(self):
         # Test a factory that returns a new list.
         @dataclass
@@ -1524,6 +1548,24 @@ class A(types.GenericAlias):
         self.assertTrue(is_dataclass(type(a)))
         self.assertTrue(is_dataclass(a))
 
+    def test_is_dataclass_inheritance(self):
+        @dataclass
+        class X:
+            y: int
+
+        class Z(X):
+            pass
+
+        self.assertTrue(is_dataclass(X), "X should be a dataclass")
+        self.assertTrue(
+            is_dataclass(Z),
+            "Z should be a dataclass because it inherits from X",
+        )
+        z_instance = Z(y=5)
+        self.assertTrue(
+            is_dataclass(z_instance),
+            "z_instance should be a dataclass because it is an instance of Z",
+        )
 
     def test_helper_fields_with_class_instance(self):
         # Check that we can call fields() on either a class or instance,
@@ -3134,6 +3176,48 @@ class C:
         with self.assertRaisesRegex(TypeError, 'unhashable type'):
             hash(C({}))
 
+    def test_frozen_deepcopy_without_slots(self):
+        # see: https://github.com/python/cpython/issues/89683
+        @dataclass(frozen=True, slots=False)
+        class C:
+            s: str
+
+        c = C('hello')
+        self.assertEqual(deepcopy(c), c)
+
+    def test_frozen_deepcopy_with_slots(self):
+        # see: https://github.com/python/cpython/issues/89683
+        with self.subTest('generated __slots__'):
+            @dataclass(frozen=True, slots=True)
+            class C:
+                s: str
+
+            c = C('hello')
+            self.assertEqual(deepcopy(c), c)
+
+        with self.subTest('user-defined __slots__ and no __{get,set}state__'):
+            @dataclass(frozen=True, slots=False)
+            class C:
+                __slots__ = ('s',)
+                s: str
+
+            # with user-defined slots, __getstate__ and __setstate__ are not
+            # automatically added, hence the error
+            err = r"^cannot\ assign\ to\ field\ 's'$"
+            self.assertRaisesRegex(FrozenInstanceError, err, deepcopy, C(''))
+
+        with self.subTest('user-defined __slots__ and __{get,set}state__'):
+            @dataclass(frozen=True, slots=False)
+            class C:
+                __slots__ = ('s',)
+                __getstate__ = dataclasses._dataclass_getstate
+                __setstate__ = dataclasses._dataclass_setstate
+
+                s: str
+
+            c = C('hello')
+            self.assertEqual(deepcopy(c), c)
+
 
 class TestSlots(unittest.TestCase):
     def test_simple(self):
@@ -3515,8 +3599,165 @@ class A:
         class B(A):
             pass
 
+        self.assertEqual(B.__slots__, ())
+        B()
+
+    def test_dataclass_derived_generic(self):
+        T = typing.TypeVar('T')
+
+        @dataclass(slots=True, weakref_slot=True)
+        class A(typing.Generic[T]):
+            pass
+        self.assertEqual(A.__slots__, ('__weakref__',))
+        self.assertTrue(A.__weakref__)
+        A()
+
+        @dataclass(slots=True, weakref_slot=True)
+        class B[T2]:
+            pass
+        self.assertEqual(B.__slots__, ('__weakref__',))
+        self.assertTrue(B.__weakref__)
         B()
 
+    def test_dataclass_derived_generic_from_base(self):
+        T = typing.TypeVar('T')
+
+        class RawBase: ...
+
+        @dataclass(slots=True, weakref_slot=True)
+        class C1(typing.Generic[T], RawBase):
+            pass
+        self.assertEqual(C1.__slots__, ())
+        self.assertTrue(C1.__weakref__)
+        C1()
+        @dataclass(slots=True, weakref_slot=True)
+        class C2(RawBase, typing.Generic[T]):
+            pass
+        self.assertEqual(C2.__slots__, ())
+        self.assertTrue(C2.__weakref__)
+        C2()
+
+        @dataclass(slots=True, weakref_slot=True)
+        class D[T2](RawBase):
+            pass
+        self.assertEqual(D.__slots__, ())
+        self.assertTrue(D.__weakref__)
+        D()
+
+    def test_dataclass_derived_generic_from_slotted_base(self):
+        T = typing.TypeVar('T')
+
+        class WithSlots:
+            __slots__ = ('a', 'b')
+
+        @dataclass(slots=True, weakref_slot=True)
+        class E1(WithSlots, Generic[T]):
+            pass
+        self.assertEqual(E1.__slots__, ('__weakref__',))
+        self.assertTrue(E1.__weakref__)
+        E1()
+        @dataclass(slots=True, weakref_slot=True)
+        class E2(Generic[T], WithSlots):
+            pass
+        self.assertEqual(E2.__slots__, ('__weakref__',))
+        self.assertTrue(E2.__weakref__)
+        E2()
+
+        @dataclass(slots=True, weakref_slot=True)
+        class F[T2](WithSlots):
+            pass
+        self.assertEqual(F.__slots__, ('__weakref__',))
+        self.assertTrue(F.__weakref__)
+        F()
+
+    def test_dataclass_derived_generic_from_slotted_base(self):
+        T = typing.TypeVar('T')
+
+        class WithWeakrefSlot:
+            __slots__ = ('__weakref__',)
+
+        @dataclass(slots=True, weakref_slot=True)
+        class G1(WithWeakrefSlot, Generic[T]):
+            pass
+        self.assertEqual(G1.__slots__, ())
+        self.assertTrue(G1.__weakref__)
+        G1()
+        @dataclass(slots=True, weakref_slot=True)
+        class G2(Generic[T], WithWeakrefSlot):
+            pass
+        self.assertEqual(G2.__slots__, ())
+        self.assertTrue(G2.__weakref__)
+        G2()
+
+        @dataclass(slots=True, weakref_slot=True)
+        class H[T2](WithWeakrefSlot):
+            pass
+        self.assertEqual(H.__slots__, ())
+        self.assertTrue(H.__weakref__)
+        H()
+
+    def test_dataclass_slot_dict(self):
+        class WithDictSlot:
+            __slots__ = ('__dict__',)
+
+        @dataclass(slots=True)
+        class A(WithDictSlot): ...
+
+        self.assertEqual(A.__slots__, ())
+        self.assertEqual(A().__dict__, {})
+        A()
+
+    @support.cpython_only
+    def test_dataclass_slot_dict_ctype(self):
+        # https://github.com/python/cpython/issues/123935
+        from test.support import import_helper
+        # Skips test if `_testcapi` is not present:
+        _testcapi = import_helper.import_module('_testcapi')
+
+        @dataclass(slots=True)
+        class HasDictOffset(_testcapi.HeapCTypeWithDict):
+            __dict__: dict = {}
+        self.assertNotEqual(_testcapi.HeapCTypeWithDict.__dictoffset__, 0)
+        self.assertEqual(HasDictOffset.__slots__, ())
+
+        @dataclass(slots=True)
+        class DoesNotHaveDictOffset(_testcapi.HeapCTypeWithWeakref):
+            __dict__: dict = {}
+        self.assertEqual(_testcapi.HeapCTypeWithWeakref.__dictoffset__, 0)
+        self.assertEqual(DoesNotHaveDictOffset.__slots__, ('__dict__',))
+
+    @support.cpython_only
+    def test_slots_with_wrong_init_subclass(self):
+        # TODO: This test is for a kinda-buggy behavior.
+        # Ideally, it should be fixed and `__init_subclass__`
+        # should be fully supported in the future versions.
+        # See https://github.com/python/cpython/issues/91126
+        class WrongSuper:
+            def __init_subclass__(cls, arg):
+                pass
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "missing 1 required positional argument: 'arg'",
+        ):
+            @dataclass(slots=True)
+            class WithWrongSuper(WrongSuper, arg=1):
+                pass
+
+        class CorrectSuper:
+            args = []
+            def __init_subclass__(cls, arg="default"):
+                cls.args.append(arg)
+
+        @dataclass(slots=True)
+        class WithCorrectSuper(CorrectSuper):
+            pass
+
+        # __init_subclass__ is called twice: once for `WithCorrectSuper`
+        # and once for `WithCorrectSuper__slots__` new class
+        # that we create internally.
+        self.assertEqual(CorrectSuper.args, ["default", "default"])
+
 
 class TestDescriptors(unittest.TestCase):
     def test_set_name(self):
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 3859733a4fe65b..005187f13e665f 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -1,5 +1,6 @@
 import unittest
 import sys
+import functools
 
 from test.support.import_helper import import_fresh_module
 
@@ -39,21 +40,26 @@ def load_tests(loader, tests, pattern):
         for cls in test_classes:
             cls.__name__ += suffix
             cls.__qualname__ += suffix
-            @classmethod
-            def setUpClass(cls_, module=module):
-                cls_._save_sys_modules = sys.modules.copy()
-                sys.modules[TESTS] = module
-                sys.modules['datetime'] = module.datetime_module
-                if hasattr(module, '_pydatetime'):
-                    sys.modules['_pydatetime'] = module._pydatetime
-                sys.modules['_strptime'] = module._strptime
-            @classmethod
-            def tearDownClass(cls_):
-                sys.modules.clear()
-                sys.modules.update(cls_._save_sys_modules)
-            cls.setUpClass = setUpClass
-            cls.tearDownClass = tearDownClass
-            tests.addTests(loader.loadTestsFromTestCase(cls))
+
+            @functools.wraps(cls, updated=())
+            class Wrapper(cls):
+                @classmethod
+                def setUpClass(cls_, module=module):
+                    cls_._save_sys_modules = sys.modules.copy()
+                    sys.modules[TESTS] = module
+                    sys.modules['datetime'] = module.datetime_module
+                    if hasattr(module, '_pydatetime'):
+                        sys.modules['_pydatetime'] = module._pydatetime
+                    sys.modules['_strptime'] = module._strptime
+                    super().setUpClass()
+
+                @classmethod
+                def tearDownClass(cls_):
+                    super().tearDownClass()
+                    sys.modules.clear()
+                    sys.modules.update(cls_._save_sys_modules)
+
+            tests.addTests(loader.loadTestsFromTestCase(Wrapper))
     return tests
 
 
diff --git a/Lib/test/test_dbm_gnu.py b/Lib/test/test_dbm_gnu.py
index e20addf1f04f1b..66268c42a300b5 100644
--- a/Lib/test/test_dbm_gnu.py
+++ b/Lib/test/test_dbm_gnu.py
@@ -1,10 +1,11 @@
-from test import support
-from test.support import import_helper, cpython_only
-gdbm = import_helper.import_module("dbm.gnu") #skip if not supported
-import unittest
 import os
-from test.support.os_helper import TESTFN, TESTFN_NONASCII, unlink, FakePath
+import unittest
+from test import support
+from test.support import cpython_only, import_helper
+from test.support.os_helper import (TESTFN, TESTFN_NONASCII, FakePath,
+                                    create_empty_file, temp_dir, unlink)
 
+gdbm = import_helper.import_module("dbm.gnu")  # skip if not supported
 
 filename = TESTFN
 
@@ -205,6 +206,16 @@ def test_clear(self):
                 self.assertNotIn(k, db)
             self.assertEqual(len(db), 0)
 
+    @support.run_with_locale(
+        'LC_ALL',
+        'fr_FR.iso88591', 'ja_JP.sjis', 'zh_CN.gbk',
+        'fr_FR.utf8', 'en_US.utf8',
+        '',
+    )
+    def test_localized_error(self):
+        with temp_dir() as d:
+            create_empty_file(os.path.join(d, 'test'))
+            self.assertRaises(gdbm.error, gdbm.open, filename, 'r')
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index e927e24b582a5d..d1e7e69e7e951b 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -1253,7 +1253,7 @@ def test_deprecated_N_format(self):
             self.assertRaises(ValueError, format, h, '10Nf')
             self.assertRaises(ValueError, format, h, 'Nx')
 
-    @run_with_locale('LC_ALL', 'ps_AF')
+    @run_with_locale('LC_ALL', 'ps_AF', '')
     def test_wide_char_separator_decimal_point(self):
         # locale with wide char separator and decimal point
         Decimal = self.decimal.Decimal
@@ -2071,7 +2071,9 @@ def test_tonum_methods(self):
         #to quantize, which is already extensively tested
         test_triples = [
             ('123.456', -4, '0E+4'),
+            ('-123.456', -4, '-0E+4'),
             ('123.456', -3, '0E+3'),
+            ('-123.456', -3, '-0E+3'),
             ('123.456', -2, '1E+2'),
             ('123.456', -1, '1.2E+2'),
             ('123.456', 0, '123'),
@@ -4379,7 +4381,8 @@ def test_module_attributes(self):
 
         self.assertEqual(C.__version__, P.__version__)
 
-        self.assertEqual(dir(C), dir(P))
+        self.assertLessEqual(set(dir(C)), set(dir(P)))
+        self.assertEqual([n for n in dir(C) if n[:2] != '__'], sorted(P.__all__))
 
     def test_context_attributes(self):
 
@@ -5892,13 +5895,17 @@ def load_tests(loader, tests, pattern):
 
     if TODO_TESTS is None:
         from doctest import DocTestSuite, IGNORE_EXCEPTION_DETAIL
+        orig_context = orig_sys_decimal.getcontext().copy()
         for mod in C, P:
             if not mod:
                 continue
             def setUp(slf, mod=mod):
                 sys.modules['decimal'] = mod
-            def tearDown(slf):
+                init(mod)
+            def tearDown(slf, mod=mod):
                 sys.modules['decimal'] = orig_sys_decimal
+                mod.setcontext(ORIGINAL_CONTEXT[mod].copy())
+                orig_sys_decimal.setcontext(orig_context.copy())
             optionflags = IGNORE_EXCEPTION_DETAIL if mod is C else 0
             sys.modules['decimal'] = mod
             tests.addTest(DocTestSuite(mod, setUp=setUp, tearDown=tearDown,
@@ -5913,8 +5920,8 @@ def setUpModule():
     TEST_ALL = ARITH if ARITH is not None else is_resource_enabled('decimal')
 
 def tearDownModule():
-    if C: C.setcontext(ORIGINAL_CONTEXT[C])
-    P.setcontext(ORIGINAL_CONTEXT[P])
+    if C: C.setcontext(ORIGINAL_CONTEXT[C].copy())
+    P.setcontext(ORIGINAL_CONTEXT[P].copy())
     if not C:
         warnings.warn('C tests skipped: no module named _decimal.',
                       UserWarning)
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 18144c8cbb2f0a..dd1fa321ecf171 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -15,6 +15,7 @@
 from copy import deepcopy
 from contextlib import redirect_stdout
 from test import support
+from test.support.testcase import ExtraAssertions
 
 try:
     import _testcapi
@@ -403,15 +404,7 @@ def test_wrap_lenfunc_bad_cast(self):
         self.assertEqual(range(sys.maxsize).__len__(), sys.maxsize)
 
 
-class ClassPropertiesAndMethods(unittest.TestCase):
-
-    def assertHasAttr(self, obj, name):
-        self.assertTrue(hasattr(obj, name),
-                        '%r has no attribute %r' % (obj, name))
-
-    def assertNotHasAttr(self, obj, name):
-        self.assertFalse(hasattr(obj, name),
-                         '%r has unexpected attribute %r' % (obj, name))
+class ClassPropertiesAndMethods(unittest.TestCase, ExtraAssertions):
 
     def test_python_dicts(self):
         # Testing Python subclass of dict...
@@ -1314,7 +1307,7 @@ class X(object):
         # Inherit from object on purpose to check some backwards compatibility paths
         class X(object):
             __slots__ = "a"
-        with self.assertRaisesRegex(AttributeError, "'X' object has no attribute 'a'"):
+        with self.assertRaisesRegex(AttributeError, "'test.test_descr.ClassPropertiesAndMethods.test_slots.<locals>.X' object has no attribute 'a'"):
             X().a
 
         # Test string subclass in `__slots__`, see gh-98783
@@ -5014,6 +5007,7 @@ def __new__(cls):
                 cls.lst = [2**i for i in range(10000)]
         X.descr
 
+    @support.suppress_immortalization()
     def test_remove_subclass(self):
         # bpo-46417: when the last subclass of a type is deleted,
         # remove_subclass() clears the internal dictionary of subclasses:
diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index e5dba7cdc570a8..4030716efb51f9 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -1476,6 +1476,24 @@ def test_dict_items_result_gc_reversed(self):
         gc.collect()
         self.assertTrue(gc.is_tracked(next(it)))
 
+    def test_store_evilattr(self):
+        class EvilAttr:
+            def __init__(self, d):
+                self.d = d
+
+            def __del__(self):
+                if 'attr' in self.d:
+                    del self.d['attr']
+                gc.collect()
+
+        class Obj:
+            pass
+
+        obj = Obj()
+        obj.__dict__ = {}
+        for _ in range(10):
+            obj.attr = EvilAttr(obj.__dict__)
+
     def test_str_nonstr(self):
         # cpython uses a different lookup function if the dict only contains
         # `str` keys. Make sure the unoptimized path is used when a non-`str`
diff --git a/Lib/test/test_dictcomps.py b/Lib/test/test_dictcomps.py
index 472e3dfa0d8a0a..26b56dac5032fa 100644
--- a/Lib/test/test_dictcomps.py
+++ b/Lib/test/test_dictcomps.py
@@ -1,5 +1,8 @@
+import traceback
 import unittest
 
+from test.support import BrokenIter
+
 # For scope testing.
 g = "Global variable"
 
@@ -127,6 +130,41 @@ def test_star_expression(self):
         self.assertEqual({i: i*i for i in [*range(4)]}, expected)
         self.assertEqual({i: i*i for i in (*range(4),)}, expected)
 
+    def test_exception_locations(self):
+        # The location of an exception raised from __init__ or
+        # __next__ should should be the iterator expression
+        def init_raises():
+            try:
+                {x:x for x in BrokenIter(init_raises=True)}
+            except Exception as e:
+                return e
+
+        def next_raises():
+            try:
+                {x:x for x in BrokenIter(next_raises=True)}
+            except Exception as e:
+                return e
+
+        def iter_raises():
+            try:
+                {x:x for x in BrokenIter(iter_raises=True)}
+            except Exception as e:
+                return e
+
+        for func, expected in [(init_raises, "BrokenIter(init_raises=True)"),
+                               (next_raises, "BrokenIter(next_raises=True)"),
+                               (iter_raises, "BrokenIter(iter_raises=True)"),
+                              ]:
+            with self.subTest(func):
+                exc = func()
+                f = traceback.extract_tb(exc.__traceback__)[0]
+                indent = 16
+                co = func.__code__
+                self.assertEqual(f.lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.end_lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.line[f.colno - indent : f.end_colno - indent],
+                                 expected)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index b68ed3baadc652..73807d7fa95fbd 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -4,15 +4,19 @@
 import dis
 import functools
 import io
+import itertools
+import opcode
 import re
 import sys
+import tempfile
+import textwrap
 import types
 import unittest
 from test.support import (captured_stdout, requires_debug_ranges,
-                          requires_specialization, cpython_only)
+                          requires_specialization, cpython_only,
+                          os_helper)
 from test.support.bytecode_helper import BytecodeTestCase
 
-import opcode
 
 CACHE = dis.opmap["CACHE"]
 
@@ -782,6 +786,7 @@ def foo(x):
                POP_TOP
        L1:     RESUME                   0
                LOAD_FAST                0 (.0)
+               GET_ITER
        L2:     FOR_ITER                10 (to L3)
                STORE_FAST               1 (z)
                LOAD_DEREF               2 (x)
@@ -2280,5 +2285,91 @@ def _unroll_caches_as_Instructions(instrs, show_caches=False):
                                   False, None, None, instr.positions)
 
 
+class TestDisCLI(unittest.TestCase):
+
+    def setUp(self):
+        self.filename = tempfile.mktemp()
+        self.addCleanup(os_helper.unlink, self.filename)
+
+    @staticmethod
+    def text_normalize(string):
+        """Dedent *string* and strip it from its surrounding whitespaces.
+
+        This method is used by the other utility functions so that any
+        string to write or to match against can be freely indented.
+        """
+        return textwrap.dedent(string).strip()
+
+    def set_source(self, content):
+        with open(self.filename, 'w') as fp:
+            fp.write(self.text_normalize(content))
+
+    def invoke_dis(self, *flags):
+        output = io.StringIO()
+        with contextlib.redirect_stdout(output):
+            dis.main(args=[*flags, self.filename])
+        return self.text_normalize(output.getvalue())
+
+    def check_output(self, source, expect, *flags):
+        with self.subTest(source=source, flags=flags):
+            self.set_source(source)
+            res = self.invoke_dis(*flags)
+            expect = self.text_normalize(expect)
+            self.assertListEqual(res.splitlines(), expect.splitlines())
+
+    def test_invocation(self):
+        # test various combinations of parameters
+        base_flags = [
+            ('-C', '--show-caches'),
+            ('-O', '--show-offsets'),
+        ]
+
+        self.set_source('''
+            def f():
+                print(x)
+                return None
+        ''')
+
+        for r in range(1, len(base_flags) + 1):
+            for choices in itertools.combinations(base_flags, r=r):
+                for args in itertools.product(*choices):
+                    with self.subTest(args=args[1:]):
+                        _ = self.invoke_dis(*args)
+
+        with self.assertRaises(SystemExit):
+            # suppress argparse error message
+            with contextlib.redirect_stderr(io.StringIO()):
+                _ = self.invoke_dis('--unknown')
+
+    def test_show_cache(self):
+        # test 'python -m dis -C/--show-caches'
+        source = 'print()'
+        expect = '''
+            0           RESUME                   0
+
+            1           LOAD_NAME                0 (print)
+                        PUSH_NULL
+                        CALL                     0
+                        CACHE                    0 (counter: 0)
+                        CACHE                    0 (func_version: 0)
+                        CACHE                    0
+                        POP_TOP
+                        RETURN_CONST             0 (None)
+        '''
+        for flag in ['-C', '--show-caches']:
+            self.check_output(source, expect, flag)
+
+    def test_show_offsets(self):
+        # test 'python -m dis -O/--show-offsets'
+        source = 'pass'
+        expect = '''
+            0          0       RESUME                   0
+
+            1          2       RETURN_CONST             0 (None)
+        '''
+        for flag in ['-O', '--show-offsets']:
+            self.check_output(source, expect, flag)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_doctest/test_doctest.py b/Lib/test/test_doctest/test_doctest.py
index 286c3ecfbc9239..7da6b983359041 100644
--- a/Lib/test/test_doctest/test_doctest.py
+++ b/Lib/test/test_doctest/test_doctest.py
@@ -2872,7 +2872,7 @@ def test_testfile(): r"""
     >>> _colorize.COLORIZE = save_colorize
 """
 
-class TestImporter(importlib.abc.MetaPathFinder, importlib.abc.ResourceLoader):
+class TestImporter(importlib.abc.MetaPathFinder):
 
     def find_spec(self, fullname, path, target=None):
         return importlib.util.spec_from_file_location(fullname, path, loader=self)
@@ -2881,6 +2881,12 @@ def get_data(self, path):
         with open(path, mode='rb') as f:
             return f.read()
 
+    def exec_module(self, module):
+        raise ImportError
+
+    def create_module(self, spec):
+        return None
+
 class TestHook:
 
     def __init__(self, pathdir):
diff --git a/Lib/test/test_email/test__header_value_parser.py b/Lib/test/test_email/test__header_value_parser.py
index 56a1e3a3de5aa2..efd1695711d7c1 100644
--- a/Lib/test/test_email/test__header_value_parser.py
+++ b/Lib/test/test_email/test__header_value_parser.py
@@ -3077,9 +3077,44 @@ def test_address_list_with_unicode_names_in_quotes(self):
                 ' =?utf-8?q?bei=C3=9Ft_bei=C3=9Ft?= <biter@example.com>\n')
 
     def test_address_list_with_list_separator_after_fold(self):
-        to = '0123456789' * 8 + '@foo, ä <foo@bar>'
+        a = 'x' * 66 + '@example.com'
+        to = f'{a}, "Hübsch Kaktus" <beautiful@example.com>'
         self._test(parser.get_address_list(to)[0],
-                   '0123456789' * 8 + '@foo,\n =?utf-8?q?=C3=A4?= <foo@bar>\n')
+            f'{a},\n =?utf-8?q?H=C3=BCbsch?= Kaktus <beautiful@example.com>\n')
+
+        a = '.' * 79  # ('.' is a special, so must be in quoted-string.)
+        to = f'"{a}" <xyz@example.com>, "Hübsch Kaktus" <beautiful@example.com>'
+        self._test(parser.get_address_list(to)[0],
+            f'"{a}"\n'
+            ' <xyz@example.com>, =?utf-8?q?H=C3=BCbsch?= Kaktus '
+            '<beautiful@example.com>\n')
+
+    def test_address_list_with_specials_in_long_quoted_string(self):
+        # Regression for gh-80222.
+        policy = self.policy.clone(max_line_length=40)
+        cases = [
+            # (to, folded)
+            ('"Exfiltrator <spy@example.org> (unclosed comment?" <to@example.com>',
+             '"Exfiltrator <spy@example.org> (unclosed\n'
+             ' comment?" <to@example.com>\n'),
+            ('"Escaped \\" chars \\\\ in quoted-string stay escaped" <to@example.com>',
+             '"Escaped \\" chars \\\\ in quoted-string\n'
+             ' stay escaped" <to@example.com>\n'),
+            ('This long display name does not need quotes <to@example.com>',
+             'This long display name does not need\n'
+             ' quotes <to@example.com>\n'),
+            ('"Quotes are not required but are retained here" <to@example.com>',
+             '"Quotes are not required but are\n'
+             ' retained here" <to@example.com>\n'),
+            ('"A quoted-string, it can be a valid local-part"@example.com',
+             '"A quoted-string, it can be a valid\n'
+             ' local-part"@example.com\n'),
+            ('"local-part-with-specials@but-no-fws.cannot-fold"@example.com',
+             '"local-part-with-specials@but-no-fws.cannot-fold"@example.com\n'),
+        ]
+        for (to, folded) in cases:
+            with self.subTest(to=to):
+                self._test(parser.get_address_list(to)[0], folded, policy=policy)
 
     # XXX Need tests with comments on various sides of a unicode token,
     # and with unicode tokens in the comments.  Spaces inside the quotes
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
index 65ddbabcaa1997..925a638572d79c 100644
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -810,6 +810,16 @@ def test_unicode_body_defaults_to_utf8_encoding(self):
             w4kgdGVzdGFiYwo=
             """))
 
+    def test_string_payload_with_base64_cte(self):
+        msg = email.message_from_string(textwrap.dedent("""\
+        Content-Transfer-Encoding: base64
+
+        SGVsbG8uIFRlc3Rpbmc=
+        """), policy=email.policy.default)
+        self.assertEqual(msg.get_payload(decode=True), b"Hello. Testing")
+        self.assertDefectsEqual(msg['content-transfer-encoding'].defects, [])
+
+
 
 # Test the email.encoders module
 class TestEncoders(unittest.TestCase):
@@ -2352,6 +2362,40 @@ def test_missing_header_body_separator(self):
         self.assertDefectsEqual(msg.defects,
                                 [errors.MissingHeaderBodySeparatorDefect])
 
+    def test_string_payload_with_extra_space_after_cte(self):
+        # https://github.com/python/cpython/issues/98188
+        cte = "base64 "
+        msg = email.message_from_string(textwrap.dedent(f"""\
+        Content-Transfer-Encoding: {cte}
+
+        SGVsbG8uIFRlc3Rpbmc=
+        """), policy=email.policy.default)
+        self.assertEqual(msg.get_payload(decode=True), b"Hello. Testing")
+        self.assertDefectsEqual(msg['content-transfer-encoding'].defects, [])
+
+    def test_string_payload_with_extra_text_after_cte(self):
+        msg = email.message_from_string(textwrap.dedent("""\
+        Content-Transfer-Encoding: base64 some text
+
+        SGVsbG8uIFRlc3Rpbmc=
+        """), policy=email.policy.default)
+        self.assertEqual(msg.get_payload(decode=True), b"Hello. Testing")
+        cte = msg['content-transfer-encoding']
+        self.assertDefectsEqual(cte.defects, [email.errors.InvalidHeaderDefect])
+
+    def test_string_payload_with_extra_space_after_cte_compat32(self):
+        cte = "base64 "
+        msg = email.message_from_string(textwrap.dedent(f"""\
+        Content-Transfer-Encoding: {cte}
+
+        SGVsbG8uIFRlc3Rpbmc=
+        """), policy=email.policy.compat32)
+        pasted_cte = msg['content-transfer-encoding']
+        self.assertEqual(pasted_cte, cte)
+        self.assertEqual(msg.get_payload(decode=True), b"Hello. Testing")
+        self.assertDefectsEqual(msg.defects, [])
+
+
 
 # Test RFC 2047 header encoding and decoding
 class TestRFC2047(TestEmailBase):
diff --git a/Lib/test/test_email/test_generator.py b/Lib/test/test_email/test_generator.py
index 3ebcb684d006d0..c75a842c33578e 100644
--- a/Lib/test/test_email/test_generator.py
+++ b/Lib/test/test_email/test_generator.py
@@ -6,6 +6,7 @@
 from email.generator import Generator, BytesGenerator
 from email.headerregistry import Address
 from email import policy
+import email.errors
 from test.test_email import TestEmailBase, parameterize
 
 
@@ -249,6 +250,44 @@ def test_rfc2231_wrapping_switches_to_default_len_if_too_narrow(self):
         g.flatten(msg)
         self.assertEqual(s.getvalue(), self.typ(expected))
 
+    def test_keep_encoded_newlines(self):
+        msg = self.msgmaker(self.typ(textwrap.dedent("""\
+            To: nobody
+            Subject: Bad subject=?UTF-8?Q?=0A?=Bcc: injection@example.com
+
+            None
+            """)))
+        expected = textwrap.dedent("""\
+            To: nobody
+            Subject: Bad subject=?UTF-8?Q?=0A?=Bcc: injection@example.com
+
+            None
+            """)
+        s = self.ioclass()
+        g = self.genclass(s, policy=self.policy.clone(max_line_length=80))
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), self.typ(expected))
+
+    def test_keep_long_encoded_newlines(self):
+        msg = self.msgmaker(self.typ(textwrap.dedent("""\
+            To: nobody
+            Subject: Bad subject=?UTF-8?Q?=0A?=Bcc: injection@example.com
+
+            None
+            """)))
+        expected = textwrap.dedent("""\
+            To: nobody
+            Subject: Bad subject
+             =?utf-8?q?=0A?=Bcc:
+             injection@example.com
+
+            None
+            """)
+        s = self.ioclass()
+        g = self.genclass(s, policy=self.policy.clone(max_line_length=30))
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), self.typ(expected))
+
 
 class TestGenerator(TestGeneratorBase, TestEmailBase):
 
@@ -273,6 +312,29 @@ def test_flatten_unicode_linesep(self):
         g.flatten(msg)
         self.assertEqual(s.getvalue(), self.typ(expected))
 
+    def test_verify_generated_headers(self):
+        """gh-121650: by default the generator prevents header injection"""
+        class LiteralHeader(str):
+            name = 'Header'
+            def fold(self, **kwargs):
+                return self
+
+        for text in (
+            'Value\r\nBad Injection\r\n',
+            'NoNewLine'
+        ):
+            with self.subTest(text=text):
+                message = message_from_string(
+                    "Header: Value\r\n\r\nBody",
+                    policy=self.policy,
+                )
+
+                del message['Header']
+                message['Header'] = LiteralHeader(text)
+
+                with self.assertRaises(email.errors.HeaderWriteError):
+                    message.as_string()
+
 
 class TestBytesGenerator(TestGeneratorBase, TestEmailBase):
 
@@ -281,6 +343,54 @@ class TestBytesGenerator(TestGeneratorBase, TestEmailBase):
     ioclass = io.BytesIO
     typ = lambda self, x: x.encode('ascii')
 
+    def test_defaults_handle_spaces_between_encoded_words_when_folded(self):
+        source = ("Уведомление о принятии в работу обращения для"
+                  " подключения услуги")
+        expected = ('Subject: =?utf-8?b?0KPQstC10LTQvtC80LvQtdC90LjQtSDQviDQv9GA0LjQvdGP0YLQuNC4?=\n'
+                    ' =?utf-8?b?INCyINGA0LDQsdC+0YLRgyDQvtCx0YDQsNGJ0LXQvdC40Y8g0LTQu9GPINC/0L4=?=\n'
+                    ' =?utf-8?b?0LTQutC70Y7Rh9C10L3QuNGPINGD0YHQu9GD0LPQuA==?=\n\n').encode('ascii')
+        msg = EmailMessage()
+        msg['Subject'] = source
+        s = io.BytesIO()
+        g = BytesGenerator(s)
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), expected)
+
+    def test_defaults_handle_spaces_when_encoded_words_is_folded_in_middle(self):
+        source = ('A very long long long long long long long long long long long long '
+                  'long long long long long long long long long long long súmmäry')
+        expected = ('Subject: A very long long long long long long long long long long long long\n'
+                    ' long long long long long long long long long long long =?utf-8?q?s=C3=BAmm?=\n'
+                    ' =?utf-8?q?=C3=A4ry?=\n\n').encode('ascii')
+        msg = EmailMessage()
+        msg['Subject'] = source
+        s = io.BytesIO()
+        g = BytesGenerator(s)
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), expected)
+
+    def test_defaults_handle_spaces_at_start_of_subject(self):
+        source = " Уведомление"
+        expected = b"Subject:  =?utf-8?b?0KPQstC10LTQvtC80LvQtdC90LjQtQ==?=\n\n"
+        msg = EmailMessage()
+        msg['Subject'] = source
+        s = io.BytesIO()
+        g = BytesGenerator(s)
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), expected)
+
+    def test_defaults_handle_spaces_at_start_of_continuation_line(self):
+        source = " ф ффффффффффффффффффф ф ф"
+        expected = (b"Subject:  "
+                    b"=?utf-8?b?0YQg0YTRhNGE0YTRhNGE0YTRhNGE0YTRhNGE0YTRhNGE0YTRhNGE0YQ=?=\n"
+                    b" =?utf-8?b?INGEINGE?=\n\n")
+        msg = EmailMessage()
+        msg['Subject'] = source
+        s = io.BytesIO()
+        g = BytesGenerator(s)
+        g.flatten(msg)
+        self.assertEqual(s.getvalue(), expected)
+
     def test_cte_type_7bit_handles_unknown_8bit(self):
         source = ("Subject: Maintenant je vous présente mon "
                  "collègue\n\n").encode('utf-8')
diff --git a/Lib/test/test_email/test_headerregistry.py b/Lib/test/test_email/test_headerregistry.py
index bb7ca8dfd8c52c..a579f9eeb7f4bf 100644
--- a/Lib/test/test_email/test_headerregistry.py
+++ b/Lib/test/test_email/test_headerregistry.py
@@ -7,6 +7,7 @@
 from test.test_email import TestEmailBase, parameterize
 from email import headerregistry
 from email.headerregistry import Address, Group
+from email.header import decode_header
 from test.support import ALWAYS_EQ
 
 
@@ -837,6 +838,11 @@ def cte_as_value(self,
             '7bit',
             [errors.InvalidHeaderDefect]),
 
+        'extra_space_after_cte': (
+            'base64 ',
+            'base64',
+            []),
+
     }
 
 
@@ -1648,7 +1654,7 @@ def test_address_display_names(self):
                     'Lôrem ipsum dôlôr sit amet, cônsectetuer adipiscing. '
                     'Suspendisse pôtenti. Aliquam nibh. Suspendisse pôtenti.',
                     '=?utf-8?q?L=C3=B4rem_ipsum_d=C3=B4l=C3=B4r_sit_amet=2C_c'
-                    '=C3=B4nsectetuer?=\n =?utf-8?q?adipiscing=2E_Suspendisse'
+                    '=C3=B4nsectetuer?=\n =?utf-8?q?_adipiscing=2E_Suspendisse'
                     '_p=C3=B4tenti=2E_Aliquam_nibh=2E?=\n Suspendisse =?utf-8'
                     '?q?p=C3=B4tenti=2E?=',
                     ),
diff --git a/Lib/test/test_email/test_message.py b/Lib/test/test_email/test_message.py
index 034f7626c1fc7c..96979db27f3a21 100644
--- a/Lib/test/test_email/test_message.py
+++ b/Lib/test/test_email/test_message.py
@@ -1,6 +1,6 @@
-import unittest
 import textwrap
-from email import policy, message_from_string
+import unittest
+from email import message_from_bytes, message_from_string, policy
 from email.message import EmailMessage, MIMEPart
 from test.test_email import TestEmailBase, parameterize
 
@@ -958,6 +958,52 @@ def test_folding_with_utf8_encoding_8(self):
                          b'123456789-123456789\n 123456789 Hello '
                          b'=?utf-8?q?W=C3=B6rld!?= 123456789 123456789\n\n')
 
+    def test_folding_with_short_nospace_1(self):
+        # bpo-36520
+        #
+        # Fold a line that contains a long whitespace after
+        # the fold point.
+
+        m = EmailMessage(policy.default)
+        m['Message-ID'] = '123456789' * 3
+        parsed_msg = message_from_bytes(m.as_bytes(), policy=policy.default)
+        self.assertEqual(parsed_msg['Message-ID'], m['Message-ID'])
+
+    def test_folding_with_long_nospace_default_policy_1(self):
+        # Fixed: https://github.com/python/cpython/issues/124452
+        #
+        # When the value is too long, it should be converted back
+        # to its original form without any modifications.
+
+        m = EmailMessage(policy.default)
+        message = '123456789' * 10
+        m['Message-ID'] = message
+        self.assertEqual(m.as_bytes(),
+                         f'Message-ID:\n {message}\n\n'.encode())
+        parsed_msg = message_from_bytes(m.as_bytes(), policy=policy.default)
+        self.assertEqual(parsed_msg['Message-ID'], m['Message-ID'])
+
+    def test_folding_with_long_nospace_compat32_policy_1(self):
+        m = EmailMessage(policy.compat32)
+        message = '123456789' * 10
+        m['Message-ID'] = message
+        parsed_msg = message_from_bytes(m.as_bytes(), policy=policy.default)
+        self.assertEqual(parsed_msg['Message-ID'], m['Message-ID'])
+
+    def test_folding_with_long_nospace_smtp_policy_1(self):
+        m = EmailMessage(policy.SMTP)
+        message = '123456789' * 10
+        m['Message-ID'] = message
+        parsed_msg = message_from_bytes(m.as_bytes(), policy=policy.default)
+        self.assertEqual(parsed_msg['Message-ID'], m['Message-ID'])
+
+    def test_folding_with_long_nospace_http_policy_1(self):
+        m = EmailMessage(policy.HTTP)
+        message = '123456789' * 10
+        m['Message-ID'] = message
+        parsed_msg = message_from_bytes(m.as_bytes(), policy=policy.default)
+        self.assertEqual(parsed_msg['Message-ID'], m['Message-ID'])
+
     def test_get_body_malformed(self):
         """test for bpo-42892"""
         msg = textwrap.dedent("""\
diff --git a/Lib/test/test_email/test_policy.py b/Lib/test/test_email/test_policy.py
index c6b9c80efe1b54..baa35fd68e49c5 100644
--- a/Lib/test/test_email/test_policy.py
+++ b/Lib/test/test_email/test_policy.py
@@ -26,6 +26,7 @@ class PolicyAPITests(unittest.TestCase):
         'raise_on_defect':          False,
         'mangle_from_':             True,
         'message_factory':          None,
+        'verify_generated_headers': True,
         }
     # These default values are the ones set on email.policy.default.
     # If any of these defaults change, the docs must be updated.
@@ -294,6 +295,31 @@ def test_short_maxlen_error(self):
                 with self.assertRaises(email.errors.HeaderParseError):
                     policy.fold("Subject", subject)
 
+    def test_verify_generated_headers(self):
+        """Turning protection off allows header injection"""
+        policy = email.policy.default.clone(verify_generated_headers=False)
+        for text in (
+            'Header: Value\r\nBad: Injection\r\n',
+            'Header: NoNewLine'
+        ):
+            with self.subTest(text=text):
+                message = email.message_from_string(
+                    "Header: Value\r\n\r\nBody",
+                    policy=policy,
+                )
+                class LiteralHeader(str):
+                    name = 'Header'
+                    def fold(self, **kwargs):
+                        return self
+
+                del message['Header']
+                message['Header'] = LiteralHeader(text)
+
+                self.assertEqual(
+                    message.as_string(),
+                    f"{text}\nBody",
+                )
+
     # XXX: Need subclassing tests.
     # For adding subclassed objects, make sure the usual rules apply (subclass
     # wins), but that the order still works (right overrides left).
diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index d94c63a13b8ea4..ed459794952581 100644
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -1,10 +1,11 @@
 # Run the tests in Programs/_testembed.c (tests for the CPython embedding APIs)
 from test import support
-from test.support import import_helper, os_helper, MS_WINDOWS
+from test.support import import_helper, os_helper, threading_helper, MS_WINDOWS
 import unittest
 
 from collections import namedtuple
 import contextlib
+import io
 import json
 import os
 import os.path
@@ -48,6 +49,8 @@
 INIT_LOOPS = 4
 MAX_HASH_SEED = 4294967295
 
+ABI_THREAD = 't' if sysconfig.get_config_var('Py_GIL_DISABLED') else ''
+
 
 # If we are running from a build dir, but the stdlib has been installed,
 # some tests need to expect different results.
@@ -165,7 +168,8 @@ def run_repeated_init_and_subinterpreters(self):
             # Parse the line from the loop.  The first line is the main
             # interpreter and the 3 afterward are subinterpreters.
             interp = Interp(*match.groups())
-            if support.verbose > 1:
+            if support.verbose > 2:
+                # 5 lines per pass is super-spammy, so limit that to -vvv
                 print(interp)
             self.assertTrue(interp.interp)
             self.assertTrue(interp.tstate)
@@ -276,6 +280,10 @@ def test_pre_initialization_api(self):
         """
         env = dict(os.environ, PYTHONPATH=os.pathsep.join(sys.path))
         out, err = self.run_embedded_interpreter("test_pre_initialization_api", env=env)
+        if support.verbose > 1:
+            print()
+            print(out)
+            print(err)
         if MS_WINDOWS:
             expected_path = self.test_exe
         else:
@@ -293,6 +301,10 @@ def test_pre_initialization_sys_options(self):
         env['PYTHONPATH'] = os.pathsep.join(sys.path)
         out, err = self.run_embedded_interpreter(
                         "test_pre_initialization_sys_options", env=env)
+        if support.verbose > 1:
+            print()
+            print(out)
+            print(err)
         expected_output = (
             "sys.warnoptions: ['once', 'module', 'default']\n"
             "sys._xoptions: {'not_an_option': '1', 'also_not_an_option': '2'}\n"
@@ -404,6 +416,82 @@ def test_ucnhash_capi_reset(self):
         out, err = self.run_embedded_interpreter("test_repeated_init_exec", code)
         self.assertEqual(out, '9\n' * INIT_LOOPS)
 
+    def test_datetime_reset_strptime(self):
+        code = (
+            "import datetime;"
+            "d = datetime.datetime.strptime('2000-01-01', '%Y-%m-%d');"
+            "print(d.strftime('%Y%m%d'))"
+        )
+        out, err = self.run_embedded_interpreter("test_repeated_init_exec", code)
+        self.assertEqual(out, '20000101\n' * INIT_LOOPS)
+
+    def test_static_types_inherited_slots(self):
+        script = textwrap.dedent("""
+            import test.support
+
+            results = {}
+            def add(cls, slot, own):
+                value = getattr(cls, slot)
+                try:
+                    subresults = results[cls.__name__]
+                except KeyError:
+                    subresults = results[cls.__name__] = {}
+                subresults[slot] = [repr(value), own]
+
+            for cls in test.support.iter_builtin_types():
+                for slot, own in test.support.iter_slot_wrappers(cls):
+                    add(cls, slot, own)
+            """)
+
+        ns = {}
+        exec(script, ns, ns)
+        all_expected = ns['results']
+        del ns
+
+        script += textwrap.dedent("""
+            import json
+            import sys
+            text = json.dumps(results)
+            print(text, file=sys.stderr)
+            """)
+        out, err = self.run_embedded_interpreter(
+                "test_repeated_init_exec", script, script)
+        results = err.split('--- Loop #')[1:]
+        results = [res.rpartition(' ---\n')[-1] for res in results]
+
+        self.maxDiff = None
+        for i, text in enumerate(results, start=1):
+            result = json.loads(text)
+            for classname, expected in all_expected.items():
+                with self.subTest(loop=i, cls=classname):
+                    slots = result.pop(classname)
+                    self.assertEqual(slots, expected)
+            self.assertEqual(result, {})
+        self.assertEqual(out, '')
+
+    def test_getargs_reset_static_parser(self):
+        # Test _PyArg_Parser initializations via _PyArg_UnpackKeywords()
+        # https://github.com/python/cpython/issues/122334
+        code = textwrap.dedent("""
+            try:
+                import _ssl
+            except ModuleNotFoundError:
+                _ssl = None
+            if _ssl is not None:
+                _ssl.txt2obj(txt='1.3')
+            print('1')
+
+            import _queue
+            _queue.SimpleQueue().put_nowait(item=None)
+            print('2')
+
+            import _zoneinfo
+            _zoneinfo.ZoneInfo.clear_cache(only_keys=['Foo/Bar'])
+            print('3')
+        """)
+        out, err = self.run_embedded_interpreter("test_repeated_init_exec", code)
+        self.assertEqual(out, '1\n2\n3\n' * INIT_LOOPS)
+
 
 @unittest.skipIf(_testinternalcapi is None, "requires _testinternalcapi")
 class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
@@ -539,6 +627,8 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         CONFIG_COMPAT.update({
             'legacy_windows_stdio': 0,
         })
+    if support.is_apple:
+        CONFIG_COMPAT['use_system_logger'] = False
 
     CONFIG_PYTHON = dict(CONFIG_COMPAT,
         _config_init=API_PYTHON,
@@ -1276,11 +1366,11 @@ def module_search_paths(self, prefix=None, exec_prefix=None):
             ver = sys.version_info
             return [
                 os.path.join(prefix, sys.platlibdir,
-                             f'python{ver.major}{ver.minor}.zip'),
+                             f'python{ver.major}{ver.minor}{ABI_THREAD}.zip'),
                 os.path.join(prefix, sys.platlibdir,
-                             f'python{ver.major}.{ver.minor}'),
+                             f'python{ver.major}.{ver.minor}{ABI_THREAD}'),
                 os.path.join(exec_prefix, sys.platlibdir,
-                             f'python{ver.major}.{ver.minor}', 'lib-dynload'),
+                             f'python{ver.major}.{ver.minor}{ABI_THREAD}', 'lib-dynload'),
             ]
 
     @contextlib.contextmanager
@@ -1334,7 +1424,7 @@ def test_init_setpythonhome(self):
             expected_paths = [paths[0], os.path.join(home, 'DLLs'), stdlib]
         else:
             version = f'{sys.version_info.major}.{sys.version_info.minor}'
-            stdlib = os.path.join(home, sys.platlibdir, f'python{version}')
+            stdlib = os.path.join(home, sys.platlibdir, f'python{version}{ABI_THREAD}')
             expected_paths = self.module_search_paths(prefix=home, exec_prefix=home)
 
         config = {
@@ -1375,7 +1465,7 @@ def test_init_is_python_build_with_home(self):
             expected_paths = [paths[0], os.path.join(home, 'DLLs'), stdlib]
         else:
             version = f'{sys.version_info.major}.{sys.version_info.minor}'
-            stdlib = os.path.join(home, sys.platlibdir, f'python{version}')
+            stdlib = os.path.join(home, sys.platlibdir, f'python{version}{ABI_THREAD}')
             expected_paths = self.module_search_paths(prefix=home, exec_prefix=home)
 
         config = {
@@ -1506,7 +1596,7 @@ def test_init_pyvenv_cfg(self):
             if not MS_WINDOWS:
                 lib_dynload = os.path.join(pyvenv_home,
                                            sys.platlibdir,
-                                           f'python{ver.major}.{ver.minor}',
+                                           f'python{ver.major}.{ver.minor}{ABI_THREAD}',
                                            'lib-dynload')
                 os.makedirs(lib_dynload)
             else:
@@ -1713,6 +1803,13 @@ def test_init_main_interpreter_settings(self):
 
         self.assertEqual(out, expected)
 
+    @threading_helper.requires_working_threading()
+    def test_init_in_background_thread(self):
+        # gh-123022: Check that running Py_Initialize() in a background
+        # thread doesn't crash.
+        out, err = self.run_embedded_interpreter("test_init_in_background_thread")
+        self.assertEqual(err, "")
+
 
 class SetConfigTests(unittest.TestCase):
     def test_set_config(self):
@@ -1858,56 +1955,5 @@ def test_presite(self):
         self.assertIn("cmd", out)
 
 
-class StdPrinterTests(EmbeddingTestsMixin, unittest.TestCase):
-    # Test PyStdPrinter_Type which is used by _PySys_SetPreliminaryStderr():
-    #   "Set up a preliminary stderr printer until we have enough
-    #    infrastructure for the io module in place."
-
-    STDOUT_FD = 1
-
-    def create_printer(self, fd):
-        ctypes = import_helper.import_module('ctypes')
-        PyFile_NewStdPrinter = ctypes.pythonapi.PyFile_NewStdPrinter
-        PyFile_NewStdPrinter.argtypes = (ctypes.c_int,)
-        PyFile_NewStdPrinter.restype = ctypes.py_object
-        return PyFile_NewStdPrinter(fd)
-
-    def test_write(self):
-        message = "unicode:\xe9-\u20ac-\udc80!\n"
-
-        stdout_fd = self.STDOUT_FD
-        stdout_fd_copy = os.dup(stdout_fd)
-        self.addCleanup(os.close, stdout_fd_copy)
-
-        rfd, wfd = os.pipe()
-        self.addCleanup(os.close, rfd)
-        self.addCleanup(os.close, wfd)
-        try:
-            # PyFile_NewStdPrinter() only accepts fileno(stdout)
-            # or fileno(stderr) file descriptor.
-            os.dup2(wfd, stdout_fd)
-
-            printer = self.create_printer(stdout_fd)
-            printer.write(message)
-        finally:
-            os.dup2(stdout_fd_copy, stdout_fd)
-
-        data = os.read(rfd, 100)
-        self.assertEqual(data, message.encode('utf8', 'backslashreplace'))
-
-    def test_methods(self):
-        fd = self.STDOUT_FD
-        printer = self.create_printer(fd)
-        self.assertEqual(printer.fileno(), fd)
-        self.assertEqual(printer.isatty(), os.isatty(fd))
-        printer.flush()  # noop
-        printer.close()  # noop
-
-    def test_disallow_instantiation(self):
-        fd = self.STDOUT_FD
-        printer = self.create_printer(fd)
-        support.check_disallow_instantiation(self, type(printer))
-
-
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index 529dfc62eff680..11e95d5b88b8c9 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -11,10 +11,11 @@
 import builtins as bltns
 from collections import OrderedDict
 from datetime import date
+from functools import partial
 from enum import Enum, EnumMeta, IntEnum, StrEnum, EnumType, Flag, IntFlag, unique, auto
 from enum import STRICT, CONFORM, EJECT, KEEP, _simple_enum, _test_simple_enum
 from enum import verify, UNIQUE, CONTINUOUS, NAMED_FLAGS, ReprEnum
-from enum import member, nonmember, _iter_bits_lsb
+from enum import member, nonmember, _iter_bits_lsb, EnumDict
 from io import StringIO
 from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL
 from test import support
@@ -1495,6 +1496,27 @@ class SpamEnum(Enum):
             spam = nonmember(SpamEnumIsInner)
         self.assertTrue(SpamEnum.spam is SpamEnumIsInner)
 
+    def test_using_members_as_nonmember(self):
+        class Example(Flag):
+            A = 1
+            B = 2
+            ALL = nonmember(A | B)
+
+        self.assertEqual(Example.A.value, 1)
+        self.assertEqual(Example.B.value, 2)
+        self.assertEqual(Example.ALL, 3)
+        self.assertIs(type(Example.ALL), int)
+
+        class Example(Flag):
+            A = auto()
+            B = auto()
+            ALL = nonmember(A | B)
+
+        self.assertEqual(Example.A.value, 1)
+        self.assertEqual(Example.B.value, 2)
+        self.assertEqual(Example.ALL, 3)
+        self.assertIs(type(Example.ALL), int)
+
     def test_nested_classes_in_enum_with_member(self):
         """Support locally-defined nested classes."""
         class Outer(Enum):
@@ -1516,6 +1538,19 @@ class Inner(Enum):
             [Outer.a, Outer.b, Outer.Inner],
             )
 
+    def test_partial(self):
+        def func(a, b=5):
+            return a, b
+        with self.assertWarnsRegex(FutureWarning, r'partial.*enum\.member') as cm:
+            class E(Enum):
+                a = 1
+                b = partial(func)
+        self.assertEqual(cm.filename, __file__)
+        self.assertIsInstance(E.b, partial)
+        self.assertEqual(E.b(2), (2, 5))
+        with self.assertWarnsRegex(FutureWarning, 'partial'):
+            self.assertEqual(E.a.b(2), (2, 5))
+
     def test_enum_with_value_name(self):
         class Huh(Enum):
             name = 1
@@ -1867,6 +1902,25 @@ def test_wrong_inheritance_order(self):
             class Wrong(Enum, str):
                 NotHere = 'error before this point'
 
+    def test_raise_custom_error_on_creation(self):
+        class InvalidRgbColorError(ValueError):
+            def __init__(self, r, g, b):
+                self.r = r
+                self.g = g
+                self.b = b
+                super().__init__(f'({r}, {g}, {b}) is not a valid RGB color')
+
+        with self.assertRaises(InvalidRgbColorError):
+            class RgbColor(Enum):
+                RED = (255, 0, 0)
+                GREEN = (0, 255, 0)
+                BLUE = (0, 0, 255)
+                INVALID = (256, 0, 0)
+
+                def __init__(self, r, g, b):
+                    if not all(0 <= val <= 255 for val in (r, g, b)):
+                        raise InvalidRgbColorError(r, g, b)
+
     def test_intenum_transitivity(self):
         class number(IntEnum):
             one = 1
@@ -3439,6 +3493,13 @@ def test_empty_names(self):
         self.assertRaisesRegex(TypeError, '.int. object is not iterable', Enum, 'bad_enum', names=0)
         self.assertRaisesRegex(TypeError, '.int. object is not iterable', Enum, 'bad_enum', 0, type=int)
 
+    def test_nonhashable_matches_hashable(self):    # issue 125710
+        class Directions(Enum):
+            DOWN_ONLY = frozenset({"sc"})
+            UP_ONLY = frozenset({"cs"})
+            UNRESTRICTED = frozenset({"sc", "cs"})
+        self.assertIs(Directions({"sc"}), Directions.DOWN_ONLY)
+
 
 class TestOrder(unittest.TestCase):
     "test usage of the `_order_` attribute"
@@ -5307,7 +5368,7 @@ def test_convert_value_lookup_priority(self):
                 filter=lambda x: x.startswith('CONVERT_TEST_'))
         # We don't want the reverse lookup value to vary when there are
         # multiple possible names for a given value.  It should always
-        # report the first lexigraphical name in that case.
+        # report the first lexicographical name in that case.
         self.assertEqual(test_type(5).name, 'CONVERT_TEST_NAME_A')
 
     def test_convert_int(self):
@@ -5393,6 +5454,37 @@ def test_convert_repr_and_str(self):
         self.assertEqual(format(test_type.CONVERT_STRING_TEST_NAME_A), '5')
 
 
+class TestEnumDict(unittest.TestCase):
+    def test_enum_dict_in_metaclass(self):
+        """Test that EnumDict is usable as a class namespace"""
+        class Meta(type):
+            @classmethod
+            def __prepare__(metacls, cls, bases, **kwds):
+                return EnumDict(cls)
+
+        class MyClass(metaclass=Meta):
+            a = 1
+
+            with self.assertRaises(TypeError):
+                a = 2  # duplicate
+
+            with self.assertRaises(ValueError):
+                _a_sunder_ = 3
+
+    def test_enum_dict_standalone(self):
+        """Test that EnumDict is usable on its own"""
+        enumdict = EnumDict()
+        enumdict['a'] = 1
+
+        with self.assertRaises(TypeError):
+            enumdict['a'] = 'other value'
+
+        # Only MutableMapping interface is overridden for now.
+        # If this stops passing, update the documentation.
+        enumdict |= {'a': 'other value'}
+        self.assertEqual(enumdict['a'], 'other value')
+
+
 # helpers
 
 def enum_dir(cls):
diff --git a/Lib/test/test_eof.py b/Lib/test/test_eof.py
index be4fd73bfdc36b..582e5b6de6e687 100644
--- a/Lib/test/test_eof.py
+++ b/Lib/test/test_eof.py
@@ -1,7 +1,8 @@
 """test script for a few new invalid token catches"""
 
 import sys
-from test import support
+from codecs import BOM_UTF8
+from test.support import force_not_colorized
 from test.support import os_helper
 from test.support import script_helper
 from test.support import warnings_helper
@@ -11,67 +12,160 @@ class EOFTestCase(unittest.TestCase):
     def test_EOF_single_quote(self):
         expect = "unterminated string literal (detected at line 1) (<string>, line 1)"
         for quote in ("'", "\""):
-            try:
+            with self.assertRaises(SyntaxError) as cm:
                 eval(f"""{quote}this is a test\
                 """)
-            except SyntaxError as msg:
-                self.assertEqual(str(msg), expect)
-                self.assertEqual(msg.offset, 1)
-            else:
-                raise support.TestFailed
+            self.assertEqual(str(cm.exception), expect)
+            self.assertEqual(cm.exception.offset, 1)
 
     def test_EOFS(self):
-        expect = ("unterminated triple-quoted string literal (detected at line 1) (<string>, line 1)")
-        try:
-            eval("""'''this is a test""")
-        except SyntaxError as msg:
-            self.assertEqual(str(msg), expect)
-            self.assertEqual(msg.offset, 1)
-        else:
-            raise support.TestFailed
+        expect = ("unterminated triple-quoted string literal (detected at line 3) (<string>, line 1)")
+        with self.assertRaises(SyntaxError) as cm:
+            eval("""ä = '''thîs is \na \ntest""")
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, "ä = '''thîs is ")
+        self.assertEqual(cm.exception.offset, 5)
 
+        with self.assertRaises(SyntaxError) as cm:
+            eval("""ä = '''thîs is \na \ntest""".encode())
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, "ä = '''thîs is ")
+        self.assertEqual(cm.exception.offset, 5)
+
+        with self.assertRaises(SyntaxError) as cm:
+            eval(BOM_UTF8 + """ä = '''thîs is \na \ntest""".encode())
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, "ä = '''thîs is ")
+        self.assertEqual(cm.exception.offset, 5)
+
+        with self.assertRaises(SyntaxError) as cm:
+            eval("""# coding: latin1\nä = '''thîs is \na \ntest""".encode('latin1'))
+        self.assertEqual(str(cm.exception), "unterminated triple-quoted string literal (detected at line 4) (<string>, line 2)")
+        self.assertEqual(cm.exception.text, "ä = '''thîs is ")
+        self.assertEqual(cm.exception.offset, 5)
+
+    @force_not_colorized
     def test_EOFS_with_file(self):
         expect = ("(<string>, line 1)")
         with os_helper.temp_dir() as temp_dir:
-            file_name = script_helper.make_script(temp_dir, 'foo', """'''this is \na \ntest""")
-            rc, out, err = script_helper.assert_python_failure(file_name)
-        self.assertIn(b'unterminated triple-quoted string literal (detected at line 3)', err)
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  """ä = '''thîs is \na \ntest""")
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                "    ä = '''thîs is ",
+                '        ^',
+                'SyntaxError: unterminated triple-quoted string literal (detected at line 3)'])
+
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  """ä = '''thîs is \na \ntest""".encode())
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                "    ä = '''thîs is ",
+                '        ^',
+                'SyntaxError: unterminated triple-quoted string literal (detected at line 3)'])
+
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  BOM_UTF8 + """ä = '''thîs is \na \ntest""".encode())
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                "    ä = '''thîs is ",
+                '        ^',
+                'SyntaxError: unterminated triple-quoted string literal (detected at line 3)'])
+
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  """# coding: latin1\nä = '''thîs is \na \ntest""".encode('latin1'))
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                "    ä = '''thîs is ",
+                '        ^',
+                'SyntaxError: unterminated triple-quoted string literal (detected at line 4)'])
 
     @warnings_helper.ignore_warnings(category=SyntaxWarning)
     def test_eof_with_line_continuation(self):
         expect = "unexpected EOF while parsing (<string>, line 1)"
-        try:
+        with self.assertRaises(SyntaxError) as cm:
             compile('"\\Xhh" \\', '<string>', 'exec')
-        except SyntaxError as msg:
-            self.assertEqual(str(msg), expect)
-        else:
-            raise support.TestFailed
+        self.assertEqual(str(cm.exception), expect)
 
     def test_line_continuation_EOF(self):
         """A continuation at the end of input must be an error; bpo2180."""
         expect = 'unexpected EOF while parsing (<string>, line 1)'
-        with self.assertRaises(SyntaxError) as excinfo:
-            exec('x = 5\\')
-        self.assertEqual(str(excinfo.exception), expect)
-        with self.assertRaises(SyntaxError) as excinfo:
+        with self.assertRaises(SyntaxError) as cm:
+            exec('ä = 5\\')
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, 'ä = 5\\\n')
+        self.assertEqual(cm.exception.offset, 7)
+
+        with self.assertRaises(SyntaxError) as cm:
+            exec('ä = 5\\'.encode())
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, 'ä = 5\\\n')
+        self.assertEqual(cm.exception.offset, 7)
+
+        with self.assertRaises(SyntaxError) as cm:
+            exec('# coding:latin1\nä = 5\\'.encode('latin1'))
+        self.assertEqual(str(cm.exception),
+                         'unexpected EOF while parsing (<string>, line 2)')
+        self.assertEqual(cm.exception.text, 'ä = 5\\\n')
+        self.assertEqual(cm.exception.offset, 7)
+
+        with self.assertRaises(SyntaxError) as cm:
+            exec(BOM_UTF8 + 'ä = 5\\'.encode())
+        self.assertEqual(str(cm.exception), expect)
+        self.assertEqual(cm.exception.text, 'ä = 5\\\n')
+        self.assertEqual(cm.exception.offset, 7)
+
+        with self.assertRaises(SyntaxError) as cm:
             exec('\\')
-        self.assertEqual(str(excinfo.exception), expect)
+        self.assertEqual(str(cm.exception), expect)
 
     @unittest.skipIf(not sys.executable, "sys.executable required")
+    @force_not_colorized
     def test_line_continuation_EOF_from_file_bpo2180(self):
         """Ensure tok_nextc() does not add too many ending newlines."""
         with os_helper.temp_dir() as temp_dir:
             file_name = script_helper.make_script(temp_dir, 'foo', '\\')
-            rc, out, err = script_helper.assert_python_failure(file_name)
-            self.assertIn(b'unexpected EOF while parsing', err)
-            self.assertIn(b'line 1', err)
-            self.assertIn(b'\\', err)
-
-            file_name = script_helper.make_script(temp_dir, 'foo', 'y = 6\\')
-            rc, out, err = script_helper.assert_python_failure(file_name)
-            self.assertIn(b'unexpected EOF while parsing', err)
-            self.assertIn(b'line 1', err)
-            self.assertIn(b'y = 6\\', err)
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-2:], [
+                '    \\',
+                'SyntaxError: unexpected EOF while parsing'])
+            self.assertEqual(err[-3][-8:], ', line 1', err)
+
+            file_name = script_helper.make_script(temp_dir, 'foo', 'ä = 6\\')
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                '    ä = 6\\',
+                '          ^',
+                'SyntaxError: unexpected EOF while parsing'])
+            self.assertEqual(err[-4][-8:], ', line 1', err)
+
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  '# coding:latin1\n'
+                                                  'ä = 7\\'.encode('latin1'))
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                '    ä = 7\\',
+                '          ^',
+                'SyntaxError: unexpected EOF while parsing'])
+            self.assertEqual(err[-4][-8:], ', line 2', err)
+
+            file_name = script_helper.make_script(temp_dir, 'foo',
+                                                  BOM_UTF8 + 'ä = 8\\'.encode())
+            rc, out, err = script_helper.assert_python_failure('-X', 'utf8', file_name)
+            err = err.decode().splitlines()
+            self.assertEqual(err[-3:], [
+                '    ä = 8\\',
+                '          ^',
+                'SyntaxError: unexpected EOF while parsing'])
+            self.assertEqual(err[-4][-8:], ', line 1', err)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_except_star.py b/Lib/test/test_except_star.py
index c49c6008e08e8c..284907f61213f8 100644
--- a/Lib/test/test_except_star.py
+++ b/Lib/test/test_except_star.py
@@ -952,6 +952,49 @@ def derive(self, excs):
         self.assertExceptionIsLike(tes, FalsyEG("eg", [TypeError(1)]))
         self.assertExceptionIsLike(ves, FalsyEG("eg", [ValueError(2)]))
 
+    def test_exception_group_subclass_with_bad_split_func(self):
+        # see gh-128049.
+        class BadEG1(ExceptionGroup):
+            def split(self, *args):
+                return "NOT A 2-TUPLE!"
+
+        class BadEG2(ExceptionGroup):
+            def split(self, *args):
+                return ("NOT A 2-TUPLE!",)
+
+        eg_list = [
+            (BadEG1("eg", [OSError(123), ValueError(456)]),
+             r"split must return a tuple, not str"),
+            (BadEG2("eg", [OSError(123), ValueError(456)]),
+             r"split must return a 2-tuple, got tuple of size 1")
+        ]
+
+        for eg_class, msg in eg_list:
+            with self.assertRaisesRegex(TypeError, msg) as m:
+                try:
+                    raise eg_class
+                except* ValueError:
+                    pass
+                except* OSError:
+                    pass
+
+            self.assertExceptionIsLike(m.exception.__context__, eg_class)
+
+        # we allow tuples of length > 2 for backwards compatibility
+        class WeirdEG(ExceptionGroup):
+            def split(self, *args):
+                return super().split(*args) + ("anything", 123456, None)
+
+        try:
+            raise WeirdEG("eg", [OSError(123), ValueError(456)])
+        except* OSError as e:
+            oeg = e
+        except* ValueError as e:
+            veg = e
+
+        self.assertExceptionIsLike(oeg, WeirdEG("eg", [OSError(123)]))
+        self.assertExceptionIsLike(veg, WeirdEG("eg", [ValueError(456)]))
+
 
 class TestExceptStarCleanup(ExceptStarTest):
     def test_sys_exception_restored(self):
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index 3138f50076f1df..c6fb848b8d7fda 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -7,6 +7,8 @@
 import pickle
 import weakref
 import errno
+from codecs import BOM_UTF8
+from itertools import product
 from textwrap import dedent
 
 from test.support import (captured_stderr, check_impl_detail,
@@ -317,8 +319,8 @@ def baz():
         check('def f():\n  global x\n  nonlocal x', 2, 3)
 
         # Errors thrown by future.c
-        check('from __future__ import doesnt_exist', 1, 1)
-        check('from __future__ import braces', 1, 1)
+        check('from __future__ import doesnt_exist', 1, 24)
+        check('from __future__ import braces', 1, 24)
         check('x=1\nfrom __future__ import division', 2, 1)
         check('foo(1=2)', 1, 5)
         check('def f():\n  x, y: int', 2, 3)
@@ -1335,6 +1337,29 @@ def test_unicode_errors_no_object(self):
         for klass in klasses:
             self.assertEqual(str(klass.__new__(klass)), "")
 
+    def test_unicode_error_str_does_not_crash(self):
+        # Test that str(UnicodeError(...)) does not crash.
+        # See https://github.com/python/cpython/issues/123378.
+
+        for start, end, objlen in product(
+            range(-5, 5),
+            range(-5, 5),
+            range(7),
+        ):
+            obj = 'a' * objlen
+            with self.subTest('encode', objlen=objlen, start=start, end=end):
+                exc = UnicodeEncodeError('utf-8', obj, start, end, '')
+                self.assertIsInstance(str(exc), str)
+
+            with self.subTest('translate', objlen=objlen, start=start, end=end):
+                exc = UnicodeTranslateError(obj, start, end, '')
+                self.assertIsInstance(str(exc), str)
+
+            encoded = obj.encode()
+            with self.subTest('decode', objlen=objlen, start=start, end=end):
+                exc = UnicodeDecodeError('utf-8', encoded, start, end, '')
+                self.assertIsInstance(str(exc), str)
+
     @no_tracing
     def test_badisinstance(self):
         # Bug #2542: if issubclass(e, MyException) raises an exception,
@@ -1440,6 +1465,7 @@ def gen():
 
     @cpython_only
     @unittest.skipIf(_testcapi is None, "requires _testcapi")
+    @force_not_colorized
     def test_recursion_normalizing_infinite_exception(self):
         # Issue #30697. Test that a RecursionError is raised when
         # maximum recursion depth has been exceeded when creating
@@ -1836,6 +1862,8 @@ def f():
         except self.failureException:
             with support.captured_stderr() as err:
                 sys.__excepthook__(*sys.exc_info())
+        else:
+            self.fail("assertRaisesRegex should have failed.")
 
         self.assertIn("aab", err.getvalue())
 
@@ -1986,16 +2014,20 @@ def test_copy_pickle(self):
                 self.assertEqual(exc.path, orig.path)
 
 
+def run_script(source):
+    if isinstance(source, str):
+        with open(TESTFN, 'w', encoding='utf-8') as testfile:
+            testfile.write(dedent(source))
+    else:
+        with open(TESTFN, 'wb') as testfile:
+            testfile.write(source)
+    _rc, _out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
+    return err.decode('utf-8').splitlines()
+
 class AssertionErrorTests(unittest.TestCase):
     def tearDown(self):
         unlink(TESTFN)
 
-    def write_source(self, source):
-        with open(TESTFN, 'w') as testfile:
-            testfile.write(dedent(source))
-        _rc, _out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
-        return err.decode('utf-8').splitlines()
-
     @force_not_colorized
     def test_assertion_error_location(self):
         cases = [
@@ -2027,11 +2059,32 @@ def test_assertion_error_location(self):
                     'AssertionError',
                 ],
             ),
-            ('assert 1 > 2, "message"',
+            ('assert 1 > 2, "messäge"',
+                [
+                    '    assert 1 > 2, "messäge"',
+                    '           ^^^^^',
+                    'AssertionError: messäge',
+                ],
+            ),
+            ('assert 1 > 2, "messäge"'.encode(),
+                [
+                    '    assert 1 > 2, "messäge"',
+                    '           ^^^^^',
+                    'AssertionError: messäge',
+                ],
+            ),
+            ('# coding: latin1\nassert 1 > 2, "messäge"'.encode('latin1'),
+                [
+                    '    assert 1 > 2, "messäge"',
+                    '           ^^^^^',
+                    'AssertionError: messäge',
+                ],
+            ),
+            (BOM_UTF8 + 'assert 1 > 2, "messäge"'.encode(),
                 [
-                    '    assert 1 > 2, "message"',
+                    '    assert 1 > 2, "messäge"',
                     '           ^^^^^',
-                    'AssertionError: message',
+                    'AssertionError: messäge',
                 ],
             ),
 
@@ -2069,8 +2122,8 @@ def test_assertion_error_location(self):
             ),
         ]
         for source, expected in cases:
-            with self.subTest(source):
-                result = self.write_source(source)
+            with self.subTest(source=source):
+                result = run_script(source)
                 self.assertEqual(result[-3:], expected)
 
     @force_not_colorized
@@ -2100,12 +2153,15 @@ def test_multiline_not_highlighted(self):
             ),
         ]
         for source, expected in cases:
-            with self.subTest(source):
-                result = self.write_source(source)
+            with self.subTest(source=source):
+                result = run_script(source)
                 self.assertEqual(result[-len(expected):], expected)
 
 
+@support.force_not_colorized_test_class
 class SyntaxErrorTests(unittest.TestCase):
+    maxDiff = None
+
     @force_not_colorized
     def test_range_of_offsets(self):
         cases = [
@@ -2198,45 +2254,106 @@ def test_range_of_offsets(self):
                     the_exception = exc
 
     def test_encodings(self):
+        self.addCleanup(unlink, TESTFN)
         source = (
             '# -*- coding: cp437 -*-\n'
             '"¢¢¢¢¢¢" + f(4, x for x in range(1))\n'
         )
-        try:
-            with open(TESTFN, 'w', encoding='cp437') as testfile:
-                testfile.write(source)
-            rc, out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
-            err = err.decode('utf-8').splitlines()
-
-            self.assertEqual(err[-3], '    "¢¢¢¢¢¢" + f(4, x for x in range(1))')
-            self.assertEqual(err[-2], '                          ^^^^^^^^^^^^^^^^^^^')
-        finally:
-            unlink(TESTFN)
+        err = run_script(source.encode('cp437'))
+        self.assertEqual(err[-3], '    "¢¢¢¢¢¢" + f(4, x for x in range(1))')
+        self.assertEqual(err[-2], '                          ^^^^^^^^^^^^^^^^^^^')
 
         # Check backwards tokenizer errors
         source = '# -*- coding: ascii -*-\n\n(\n'
-        try:
-            with open(TESTFN, 'w', encoding='ascii') as testfile:
-                testfile.write(source)
-            rc, out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
-            err = err.decode('utf-8').splitlines()
-
-            self.assertEqual(err[-3], '    (')
-            self.assertEqual(err[-2], '    ^')
-        finally:
-            unlink(TESTFN)
+        err = run_script(source)
+        self.assertEqual(err[-3], '    (')
+        self.assertEqual(err[-2], '    ^')
 
     def test_non_utf8(self):
         # Check non utf-8 characters
-        try:
-            with open(TESTFN, 'bw') as testfile:
-                testfile.write(b"\x89")
-            rc, out, err = script_helper.assert_python_failure('-Wd', '-X', 'utf8', TESTFN)
-            err = err.decode('utf-8').splitlines()
+        self.addCleanup(unlink, TESTFN)
+        err = run_script(b"\x89")
+        self.assertIn("SyntaxError: Non-UTF-8 code starting with '\\x89' in file", err[-1])
 
-            self.assertIn("SyntaxError: Non-UTF-8 code starting with '\\x89' in file", err[-1])
-        finally:
-            unlink(TESTFN)
+    def test_string_source(self):
+        def try_compile(source):
+            with self.assertRaises(SyntaxError) as cm:
+                compile(source, '<string>', 'exec')
+            return cm.exception
+
+        exc = try_compile('return "ä"')
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 1)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+        exc = try_compile('return "ä"'.encode())
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 1)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+        exc = try_compile(BOM_UTF8 + 'return "ä"'.encode())
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 1)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+        exc = try_compile('# coding: latin1\nreturn "ä"'.encode('latin1'))
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 2)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+        exc = try_compile('return "ä" #' + 'ä'*1000)
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 1)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+        exc = try_compile('return "ä" # ' + 'ä'*1000)
+        self.assertEqual(str(exc), "'return' outside function (<string>, line 1)")
+        self.assertIsNone(exc.text)
+        self.assertEqual(exc.offset, 1)
+        self.assertEqual(exc.end_offset, 12)
+
+    def test_file_source(self):
+        self.addCleanup(unlink, TESTFN)
+        err = run_script('return "ä"')
+        self.assertEqual(err[-3:], [
+                         '    return "ä"',
+                         '    ^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+
+        err = run_script('return "ä"'.encode())
+        self.assertEqual(err[-3:], [
+                         '    return "ä"',
+                         '    ^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+
+        err = run_script(BOM_UTF8 + 'return "ä"'.encode())
+        self.assertEqual(err[-3:], [
+                         '    return "ä"',
+                         '    ^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+
+        err = run_script('# coding: latin1\nreturn "ä"'.encode('latin1'))
+        self.assertEqual(err[-3:], [
+                         '    return "ä"',
+                         '    ^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+
+        err = run_script('return "ä" #' + 'ä'*1000)
+        self.assertEqual(err[-2:], [
+                         '    ^^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+        self.assertEqual(err[-3][:100], '    return "ä" #' + 'ä'*84)
+
+        err = run_script('return "ä" # ' + 'ä'*1000)
+        self.assertEqual(err[-2:], [
+                         '    ^^^^^^^^^^^',
+                         "SyntaxError: 'return' outside function"])
+        self.assertEqual(err[-3][:100], '    return "ä" # ' + 'ä'*83)
 
     def test_attributes_new_constructor(self):
         args = ("bad.py", 1, 2, "abcdefg", 1, 100)
diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
index 61ec8fe3151af1..fd56dee5d842ac 100644
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -7,7 +7,7 @@
 import subprocess
 import sys
 from test import support
-from test.support import os_helper, script_helper, is_android, MS_WINDOWS
+from test.support import os_helper, script_helper, is_android, MS_WINDOWS, threading_helper
 import tempfile
 import unittest
 from textwrap import dedent
@@ -236,7 +236,7 @@ def test_sigfpe(self):
             faulthandler._sigfpe()
             """,
             3,
-            'Floating point exception')
+            'Floating-point exception')
 
     @unittest.skipIf(_testcapi is None, 'need _testcapi')
     @unittest.skipUnless(hasattr(signal, 'SIGBUS'), 'need signal.SIGBUS')
@@ -896,6 +896,34 @@ def test_cancel_later_without_dump_traceback_later(self):
         self.assertEqual(output, [])
         self.assertEqual(exitcode, 0)
 
+    @threading_helper.requires_working_threading()
+    @unittest.skipUnless(support.Py_GIL_DISABLED, "only meaningful if the GIL is disabled")
+    def test_free_threaded_dump_traceback(self):
+        # gh-128400: Other threads need to be paused to invoke faulthandler
+        code = dedent("""
+        import faulthandler
+        from threading import Thread, Event
+
+        class Waiter(Thread):
+            def __init__(self):
+                Thread.__init__(self)
+                self.running = Event()
+                self.stop = Event()
+
+            def run(self):
+                self.running.set()
+                self.stop.wait()
+
+        for _ in range(100):
+            waiter = Waiter()
+            waiter.start()
+            waiter.running.wait()
+            faulthandler.dump_traceback(all_threads=True)
+            waiter.stop.set()
+            waiter.join()
+        """)
+        _, exitcode = self.get_output(code)
+        self.assertEqual(exitcode, 0)
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_filecmp.py b/Lib/test/test_filecmp.py
index b5df71678264a8..2c83667b22feb4 100644
--- a/Lib/test/test_filecmp.py
+++ b/Lib/test/test_filecmp.py
@@ -1,5 +1,6 @@
 import filecmp
 import os
+import re
 import shutil
 import tempfile
 import unittest
@@ -155,6 +156,39 @@ def test_cmpfiles(self):
                     (['file'], ['file2'], []),
                     "Comparing mismatched directories fails")
 
+    def test_cmpfiles_invalid_names(self):
+        # See https://github.com/python/cpython/issues/122400.
+        for file, desc in [
+            ('\x00', 'NUL bytes filename'),
+            (__file__ + '\x00', 'filename with embedded NUL bytes'),
+            ("\uD834\uDD1E.py", 'surrogate codes (MUSICAL SYMBOL G CLEF)'),
+            ('a' * 1_000_000, 'very long filename'),
+        ]:
+            for other_dir in [self.dir, self.dir_same, self.dir_diff]:
+                with self.subTest(f'cmpfiles: {desc}', other_dir=other_dir):
+                    res = filecmp.cmpfiles(self.dir, other_dir, [file])
+                    self.assertTupleEqual(res, ([], [], [file]))
+
+    def test_dircmp_invalid_names(self):
+        for bad_dir, desc in [
+            ('\x00', 'NUL bytes dirname'),
+            (f'Top{os.sep}Mid\x00', 'dirname with embedded NUL bytes'),
+            ("\uD834\uDD1E", 'surrogate codes (MUSICAL SYMBOL G CLEF)'),
+            ('a' * 1_000_000, 'very long dirname'),
+        ]:
+            d1 = filecmp.dircmp(self.dir, bad_dir)
+            d2 = filecmp.dircmp(bad_dir, self.dir)
+            for target in [
+                # attributes where os.listdir() raises OSError or ValueError
+                'left_list', 'right_list',
+                'left_only', 'right_only', 'common',
+            ]:
+                with self.subTest(f'dircmp(ok, bad): {desc}', target=target):
+                    with self.assertRaises((OSError, ValueError)):
+                        getattr(d1, target)
+                with self.subTest(f'dircmp(bad, ok): {desc}', target=target):
+                    with self.assertRaises((OSError, ValueError)):
+                        getattr(d2, target)
 
     def _assert_lists(self, actual, expected):
         """Assert that two lists are equal, up to ordering."""
@@ -277,6 +311,17 @@ def test_dircmp_shallow_same_file(self):
         ]
         self._assert_report(d.report, expected_report)
 
+    def test_dircmp_shallow_is_keyword_only(self):
+        with self.assertRaisesRegex(
+            TypeError,
+            re.escape("dircmp.__init__() takes from 3 to 5 positional arguments but 6 were given"),
+        ):
+            filecmp.dircmp(self.dir, self.dir_same, None, None, True)
+        self.assertIsInstance(
+            filecmp.dircmp(self.dir, self.dir_same, None, None, shallow=True),
+            filecmp.dircmp,
+        )
+
     def test_dircmp_subdirs_type(self):
         """Check that dircmp.subdirs respects subclassing."""
         class MyDirCmp(filecmp.dircmp):
diff --git a/Lib/test/test_fileinput.py b/Lib/test/test_fileinput.py
index b3ad41d2588c4c..b340ef7ed1621c 100644
--- a/Lib/test/test_fileinput.py
+++ b/Lib/test/test_fileinput.py
@@ -23,10 +23,9 @@
 
 from io import BytesIO, StringIO
 from fileinput import FileInput, hook_encoded
-from pathlib import Path
 
 from test.support import verbose
-from test.support.os_helper import TESTFN
+from test.support.os_helper import TESTFN, FakePath
 from test.support.os_helper import unlink as safe_unlink
 from test.support import os_helper
 from test import support
@@ -478,23 +477,23 @@ def test_iteration_buffering(self):
             self.assertRaises(StopIteration, next, fi)
             self.assertEqual(src.linesread, [])
 
-    def test_pathlib_file(self):
-        t1 = Path(self.writeTmp("Pathlib file."))
+    def test_pathlike_file(self):
+        t1 = FakePath(self.writeTmp("Path-like file."))
         with FileInput(t1, encoding="utf-8") as fi:
             line = fi.readline()
-            self.assertEqual(line, 'Pathlib file.')
+            self.assertEqual(line, 'Path-like file.')
             self.assertEqual(fi.lineno(), 1)
             self.assertEqual(fi.filelineno(), 1)
             self.assertEqual(fi.filename(), os.fspath(t1))
 
-    def test_pathlib_file_inplace(self):
-        t1 = Path(self.writeTmp('Pathlib file.'))
+    def test_pathlike_file_inplace(self):
+        t1 = FakePath(self.writeTmp('Path-like file.'))
         with FileInput(t1, inplace=True, encoding="utf-8") as fi:
             line = fi.readline()
-            self.assertEqual(line, 'Pathlib file.')
+            self.assertEqual(line, 'Path-like file.')
             print('Modified %s' % line)
         with open(t1, encoding="utf-8") as f:
-            self.assertEqual(f.read(), 'Modified Pathlib file.\n')
+            self.assertEqual(f.read(), 'Modified Path-like file.\n')
 
 
 class MockFileInput:
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index 5bd640617d6874..6b074d537042f8 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -8,6 +8,7 @@
 import unittest
 
 from test import support
+from test.support.testcase import FloatsAreIdenticalMixin
 from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
                                INVALID_UNDERSCORE_LITERALS)
 from math import isinf, isnan, copysign, ldexp
@@ -152,7 +153,7 @@ def check(s):
         # non-UTF-8 byte string
         check(b'123\xa0')
 
-    @support.run_with_locale('LC_NUMERIC', 'fr_FR', 'de_DE')
+    @support.run_with_locale('LC_NUMERIC', 'fr_FR', 'de_DE', '')
     def test_float_with_comma(self):
         # set locale to something that doesn't use '.' for the decimal point
         # float must not accept the locale specific decimal point but
@@ -829,7 +830,7 @@ def test_short_repr(self):
             self.assertEqual(repr(float(negs)), str(float(negs)))
 
 @support.requires_IEEE_754
-class RoundTestCase(unittest.TestCase):
+class RoundTestCase(unittest.TestCase, FloatsAreIdenticalMixin):
 
     def test_inf_nan(self):
         self.assertRaises(OverflowError, round, INF)
@@ -859,10 +860,10 @@ def test_large_n(self):
 
     def test_small_n(self):
         for n in [-308, -309, -400, 1-2**31, -2**31, -2**31-1, -2**100]:
-            self.assertEqual(round(123.456, n), 0.0)
-            self.assertEqual(round(-123.456, n), -0.0)
-            self.assertEqual(round(1e300, n), 0.0)
-            self.assertEqual(round(1e-320, n), 0.0)
+            self.assertFloatsAreIdentical(round(123.456, n), 0.0)
+            self.assertFloatsAreIdentical(round(-123.456, n), -0.0)
+            self.assertFloatsAreIdentical(round(1e300, n), 0.0)
+            self.assertFloatsAreIdentical(round(1e-320, n), 0.0)
 
     def test_overflow(self):
         self.assertRaises(OverflowError, round, 1.6e308, -308)
@@ -1053,21 +1054,14 @@ def test_nan_signs(self):
 
 fromHex = float.fromhex
 toHex = float.hex
-class HexFloatTestCase(unittest.TestCase):
+class HexFloatTestCase(FloatsAreIdenticalMixin, unittest.TestCase):
     MAX = fromHex('0x.fffffffffffff8p+1024')  # max normal
     MIN = fromHex('0x1p-1022')                # min normal
     TINY = fromHex('0x0.0000000000001p-1022') # min subnormal
     EPS = fromHex('0x0.0000000000001p0') # diff between 1.0 and next float up
 
     def identical(self, x, y):
-        # check that floats x and y are identical, or that both
-        # are NaNs
-        if isnan(x) or isnan(y):
-            if isnan(x) == isnan(y):
-                return
-        elif x == y and (x != 0.0 or copysign(1.0, x) == copysign(1.0, y)):
-            return
-        self.fail('%r not identical to %r' % (x, y))
+        self.assertFloatsAreIdentical(x, y)
 
     def test_ends(self):
         self.identical(self.MIN, ldexp(1.0, -1022))
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py
index 8cef621bd716ac..8d83880a8c040b 100644
--- a/Lib/test/test_format.py
+++ b/Lib/test/test_format.py
@@ -36,7 +36,7 @@ def testformat(formatstr, args, output=None, limit=None, overflowok=False):
         # when 'limit' is specified, it determines how many characters
         # must match exactly; lengths must always match.
         # ex: limit=5, '12345678' matches '12345___'
-        # (mainly for floating point format tests for which an exact match
+        # (mainly for floating-point format tests for which an exact match
         # can't be guaranteed due to rounding and representation errors)
         elif output and limit is not None and (
                 len(result)!=len(output) or result[:limit]!=output[:limit]):
diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py
index b45bd098a36684..5bd3f8fa361f23 100644
--- a/Lib/test/test_fractions.py
+++ b/Lib/test/test_fractions.py
@@ -1,5 +1,6 @@
 """Tests for Lib/fractions.py."""
 
+import cmath
 from decimal import Decimal
 from test.support import requires_IEEE_754
 import math
@@ -91,6 +92,197 @@ class DummyFraction(fractions.Fraction):
 def _components(r):
     return (r.numerator, r.denominator)
 
+def typed_approx_eq(a, b):
+    return type(a) == type(b) and (a == b or math.isclose(a, b))
+
+class Symbolic:
+    """Simple non-numeric class for testing mixed arithmetic.
+    It is not Integral, Rational, Real or Complex, and cannot be converted
+    to int, float or complex. but it supports some arithmetic operations.
+    """
+    def __init__(self, value):
+        self.value = value
+    def __mul__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(f'{self} * {other}')
+    def __rmul__(self, other):
+        return self.__class__(f'{other} * {self}')
+    def __truediv__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(f'{self} / {other}')
+    def __rtruediv__(self, other):
+        return self.__class__(f'{other} / {self}')
+    def __mod__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(f'{self} % {other}')
+    def __rmod__(self, other):
+        return self.__class__(f'{other} % {self}')
+    def __pow__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(f'{self} ** {other}')
+    def __rpow__(self, other):
+        return self.__class__(f'{other} ** {self}')
+    def __eq__(self, other):
+        if other.__class__ != self.__class__:
+            return NotImplemented
+        return self.value == other.value
+    def __str__(self):
+        return f'{self.value}'
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.value!r})'
+
+class SymbolicReal(Symbolic):
+    pass
+numbers.Real.register(SymbolicReal)
+
+class SymbolicComplex(Symbolic):
+    pass
+numbers.Complex.register(SymbolicComplex)
+
+class Rat:
+    """Simple Rational class for testing mixed arithmetic."""
+    def __init__(self, n, d):
+        self.numerator = n
+        self.denominator = d
+    def __mul__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.numerator * other.numerator,
+                              self.denominator * other.denominator)
+    def __rmul__(self, other):
+        return self.__class__(other.numerator * self.numerator,
+                              other.denominator * self.denominator)
+    def __truediv__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.numerator * other.denominator,
+                              self.denominator * other.numerator)
+    def __rtruediv__(self, other):
+        return self.__class__(other.numerator * self.denominator,
+                              other.denominator * self.numerator)
+    def __mod__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        d = self.denominator * other.numerator
+        return self.__class__(self.numerator * other.denominator % d, d)
+    def __rmod__(self, other):
+        d = other.denominator * self.numerator
+        return self.__class__(other.numerator * self.denominator % d, d)
+
+        return self.__class__(other.numerator / self.numerator,
+                              other.denominator / self.denominator)
+    def __pow__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.numerator ** other,
+                              self.denominator ** other)
+    def __float__(self):
+        return self.numerator / self.denominator
+    def __eq__(self, other):
+        if self.__class__ != other.__class__:
+            return NotImplemented
+        return (typed_approx_eq(self.numerator, other.numerator) and
+                typed_approx_eq(self.denominator, other.denominator))
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.numerator!r}, {self.denominator!r})'
+numbers.Rational.register(Rat)
+
+class Root:
+    """Simple Real class for testing mixed arithmetic."""
+    def __init__(self, v, n=F(2)):
+        self.base = v
+        self.degree = n
+    def __mul__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.base * other**self.degree, self.degree)
+    def __rmul__(self, other):
+        return self.__class__(other**self.degree * self.base, self.degree)
+    def __truediv__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.base / other**self.degree, self.degree)
+    def __rtruediv__(self, other):
+        return self.__class__(other**self.degree / self.base, self.degree)
+    def __pow__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.base, self.degree / other)
+    def __float__(self):
+        return float(self.base) ** (1 / float(self.degree))
+    def __eq__(self, other):
+        if self.__class__ != other.__class__:
+            return NotImplemented
+        return typed_approx_eq(self.base, other.base) and typed_approx_eq(self.degree, other.degree)
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.base!r}, {self.degree!r})'
+numbers.Real.register(Root)
+
+class Polar:
+    """Simple Complex class for testing mixed arithmetic."""
+    def __init__(self, r, phi):
+        self.r = r
+        self.phi = phi
+    def __mul__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.r * other, self.phi)
+    def __rmul__(self, other):
+        return self.__class__(other * self.r, self.phi)
+    def __truediv__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.r / other, self.phi)
+    def __rtruediv__(self, other):
+        return self.__class__(other / self.r, -self.phi)
+    def __pow__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.r ** other, self.phi * other)
+    def __eq__(self, other):
+        if self.__class__ != other.__class__:
+            return NotImplemented
+        return typed_approx_eq(self.r, other.r) and typed_approx_eq(self.phi, other.phi)
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.r!r}, {self.phi!r})'
+numbers.Complex.register(Polar)
+
+class Rect:
+    """Other simple Complex class for testing mixed arithmetic."""
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+    def __mul__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.x * other, self.y * other)
+    def __rmul__(self, other):
+        return self.__class__(other * self.x, other * self.y)
+    def __truediv__(self, other):
+        if isinstance(other, F):
+            return NotImplemented
+        return self.__class__(self.x / other, self.y / other)
+    def __rtruediv__(self, other):
+        r = self.x * self.x + self.y * self.y
+        return self.__class__(other * (self.x / r), other * (self.y / r))
+    def __rpow__(self, other):
+        return Polar(other ** self.x, math.log(other) * self.y)
+    def __complex__(self):
+        return complex(self.x, self.y)
+    def __eq__(self, other):
+        if self.__class__ != other.__class__:
+            return NotImplemented
+        return typed_approx_eq(self.x, other.x) and typed_approx_eq(self.y, other.y)
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.x!r}, {self.y!r})'
+numbers.Complex.register(Rect)
+
+class RectComplex(Rect, complex):
+    pass
 
 class FractionTest(unittest.TestCase):
 
@@ -593,6 +785,7 @@ def testMixedArithmetic(self):
         self.assertTypedEquals(0.9, 1.0 - F(1, 10))
         self.assertTypedEquals(0.9 + 0j, (1.0 + 0j) - F(1, 10))
 
+    def testMixedMultiplication(self):
         self.assertTypedEquals(F(1, 10), F(1, 10) * 1)
         self.assertTypedEquals(0.1, F(1, 10) * 1.0)
         self.assertTypedEquals(0.1 + 0j, F(1, 10) * (1.0 + 0j))
@@ -600,6 +793,29 @@ def testMixedArithmetic(self):
         self.assertTypedEquals(0.1, 1.0 * F(1, 10))
         self.assertTypedEquals(0.1 + 0j, (1.0 + 0j) * F(1, 10))
 
+        self.assertTypedEquals(F(3, 2) * DummyFraction(5, 3), F(5, 2))
+        self.assertTypedEquals(DummyFraction(5, 3) * F(3, 2), F(5, 2))
+        self.assertTypedEquals(F(3, 2) * Rat(5, 3), Rat(15, 6))
+        self.assertTypedEquals(Rat(5, 3) * F(3, 2), F(5, 2))
+
+        self.assertTypedEquals(F(3, 2) * Root(4), Root(F(9, 1)))
+        self.assertTypedEquals(Root(4) * F(3, 2), 3.0)
+        self.assertEqual(F(3, 2) * SymbolicReal('X'), SymbolicReal('3/2 * X'))
+        self.assertRaises(TypeError, operator.mul, SymbolicReal('X'), F(3, 2))
+
+        self.assertTypedEquals(F(3, 2) * Polar(4, 2), Polar(F(6, 1), 2))
+        self.assertTypedEquals(F(3, 2) * Polar(4.0, 2), Polar(6.0, 2))
+        self.assertTypedEquals(F(3, 2) * Rect(4, 3), Rect(F(6, 1), F(9, 2)))
+        self.assertTypedEquals(F(3, 2) * RectComplex(4, 3), RectComplex(6.0+0j, 4.5+0j))
+        self.assertRaises(TypeError, operator.mul, Polar(4, 2), F(3, 2))
+        self.assertTypedEquals(Rect(4, 3) * F(3, 2), 6.0 + 4.5j)
+        self.assertEqual(F(3, 2) * SymbolicComplex('X'), SymbolicComplex('3/2 * X'))
+        self.assertRaises(TypeError, operator.mul, SymbolicComplex('X'), F(3, 2))
+
+        self.assertEqual(F(3, 2) * Symbolic('X'), Symbolic('3/2 * X'))
+        self.assertRaises(TypeError, operator.mul, Symbolic('X'), F(3, 2))
+
+    def testMixedDivision(self):
         self.assertTypedEquals(F(1, 10), F(1, 10) / 1)
         self.assertTypedEquals(0.1, F(1, 10) / 1.0)
         self.assertTypedEquals(0.1 + 0j, F(1, 10) / (1.0 + 0j))
@@ -607,6 +823,28 @@ def testMixedArithmetic(self):
         self.assertTypedEquals(10.0, 1.0 / F(1, 10))
         self.assertTypedEquals(10.0 + 0j, (1.0 + 0j) / F(1, 10))
 
+        self.assertTypedEquals(F(3, 2) / DummyFraction(3, 5), F(5, 2))
+        self.assertTypedEquals(DummyFraction(5, 3) / F(2, 3), F(5, 2))
+        self.assertTypedEquals(F(3, 2) / Rat(3, 5), Rat(15, 6))
+        self.assertTypedEquals(Rat(5, 3) / F(2, 3), F(5, 2))
+
+        self.assertTypedEquals(F(2, 3) / Root(4), Root(F(1, 9)))
+        self.assertTypedEquals(Root(4) / F(2, 3), 3.0)
+        self.assertEqual(F(3, 2) / SymbolicReal('X'), SymbolicReal('3/2 / X'))
+        self.assertRaises(TypeError, operator.truediv, SymbolicReal('X'), F(3, 2))
+
+        self.assertTypedEquals(F(3, 2) / Polar(4, 2), Polar(F(3, 8), -2))
+        self.assertTypedEquals(F(3, 2) / Polar(4.0, 2), Polar(0.375, -2))
+        self.assertTypedEquals(F(3, 2) / Rect(4, 3), Rect(0.24, 0.18))
+        self.assertRaises(TypeError, operator.truediv, Polar(4, 2), F(2, 3))
+        self.assertTypedEquals(Rect(4, 3) / F(2, 3), 6.0 + 4.5j)
+        self.assertEqual(F(3, 2) / SymbolicComplex('X'), SymbolicComplex('3/2 / X'))
+        self.assertRaises(TypeError, operator.truediv, SymbolicComplex('X'), F(3, 2))
+
+        self.assertEqual(F(3, 2) / Symbolic('X'), Symbolic('3/2 / X'))
+        self.assertRaises(TypeError, operator.truediv, Symbolic('X'), F(2, 3))
+
+    def testMixedIntegerDivision(self):
         self.assertTypedEquals(0, F(1, 10) // 1)
         self.assertTypedEquals(0.0, F(1, 10) // 1.0)
         self.assertTypedEquals(10, 1 // F(1, 10))
@@ -631,6 +869,26 @@ def testMixedArithmetic(self):
         self.assertTypedTupleEquals(divmod(-0.1, float('inf')), divmod(F(-1, 10), float('inf')))
         self.assertTypedTupleEquals(divmod(-0.1, float('-inf')), divmod(F(-1, 10), float('-inf')))
 
+        self.assertTypedEquals(F(3, 2) % DummyFraction(3, 5), F(3, 10))
+        self.assertTypedEquals(DummyFraction(5, 3) % F(2, 3), F(1, 3))
+        self.assertTypedEquals(F(3, 2) % Rat(3, 5), Rat(3, 6))
+        self.assertTypedEquals(Rat(5, 3) % F(2, 3), F(1, 3))
+
+        self.assertRaises(TypeError, operator.mod, F(2, 3), Root(4))
+        self.assertTypedEquals(Root(4) % F(3, 2), 0.5)
+        self.assertEqual(F(3, 2) % SymbolicReal('X'), SymbolicReal('3/2 % X'))
+        self.assertRaises(TypeError, operator.mod, SymbolicReal('X'), F(3, 2))
+
+        self.assertRaises(TypeError, operator.mod, F(3, 2), Polar(4, 2))
+        self.assertRaises(TypeError, operator.mod, F(3, 2), RectComplex(4, 3))
+        self.assertRaises(TypeError, operator.mod, Rect(4, 3), F(2, 3))
+        self.assertEqual(F(3, 2) % SymbolicComplex('X'), SymbolicComplex('3/2 % X'))
+        self.assertRaises(TypeError, operator.mod, SymbolicComplex('X'), F(3, 2))
+
+        self.assertEqual(F(3, 2) % Symbolic('X'), Symbolic('3/2 % X'))
+        self.assertRaises(TypeError, operator.mod, Symbolic('X'), F(2, 3))
+
+    def testMixedPower(self):
         # ** has more interesting conversion rules.
         self.assertTypedEquals(F(100, 1), F(1, 10) ** -2)
         self.assertTypedEquals(F(100, 1), F(10, 1) ** 2)
@@ -647,6 +905,40 @@ def testMixedArithmetic(self):
         self.assertRaises(ZeroDivisionError, operator.pow,
                           F(0, 1), -2)
 
+        self.assertTypedEquals(F(3, 2) ** Rat(3, 1), F(27, 8))
+        self.assertTypedEquals(F(3, 2) ** Rat(-3, 1), F(8, 27))
+        self.assertTypedEquals(F(-3, 2) ** Rat(-3, 1), F(-8, 27))
+        self.assertTypedEquals(F(9, 4) ** Rat(3, 2), 3.375)
+        self.assertIsInstance(F(4, 9) ** Rat(-3, 2), float)
+        self.assertAlmostEqual(F(4, 9) ** Rat(-3, 2), 3.375)
+        self.assertAlmostEqual(F(-4, 9) ** Rat(-3, 2), 3.375j)
+        self.assertTypedEquals(Rat(9, 4) ** F(3, 2), 3.375)
+        self.assertTypedEquals(Rat(3, 2) ** F(3, 1), Rat(27, 8))
+        self.assertTypedEquals(Rat(3, 2) ** F(-3, 1), F(8, 27))
+        self.assertIsInstance(Rat(4, 9) ** F(-3, 2), float)
+        self.assertAlmostEqual(Rat(4, 9) ** F(-3, 2), 3.375)
+
+        self.assertTypedEquals(Root(4) ** F(2, 3), Root(4, 3.0))
+        self.assertTypedEquals(Root(4) ** F(2, 1), Root(4, F(1)))
+        self.assertTypedEquals(Root(4) ** F(-2, 1), Root(4, -F(1)))
+        self.assertTypedEquals(Root(4) ** F(-2, 3), Root(4, -3.0))
+        self.assertEqual(F(3, 2) ** SymbolicReal('X'), SymbolicReal('3/2 ** X'))
+        self.assertEqual(SymbolicReal('X') ** F(3, 2), SymbolicReal('X ** 1.5'))
+
+        self.assertTypedEquals(F(3, 2) ** Rect(2, 0), Polar(F(9,4), 0.0))
+        self.assertTypedEquals(F(1, 1) ** Rect(2, 3), Polar(F(1), 0.0))
+        self.assertTypedEquals(F(3, 2) ** RectComplex(2, 0), Polar(2.25, 0.0))
+        self.assertTypedEquals(F(1, 1) ** RectComplex(2, 3), Polar(1.0, 0.0))
+        self.assertTypedEquals(Polar(4, 2) ** F(3, 2), Polar(8.0, 3.0))
+        self.assertTypedEquals(Polar(4, 2) ** F(3, 1), Polar(64, 6))
+        self.assertTypedEquals(Polar(4, 2) ** F(-3, 1), Polar(0.015625, -6))
+        self.assertTypedEquals(Polar(4, 2) ** F(-3, 2), Polar(0.125, -3.0))
+        self.assertEqual(F(3, 2) ** SymbolicComplex('X'), SymbolicComplex('3/2 ** X'))
+        self.assertEqual(SymbolicComplex('X') ** F(3, 2), SymbolicComplex('X ** 1.5'))
+
+        self.assertEqual(F(3, 2) ** Symbolic('X'), Symbolic('3/2 ** X'))
+        self.assertEqual(Symbolic('X') ** F(3, 2), Symbolic('X ** 1.5'))
+
     def testMixingWithDecimal(self):
         # Decimal refuses mixed arithmetic (but not mixed comparisons)
         self.assertRaises(TypeError, operator.add,
diff --git a/Lib/test/test_frame.py b/Lib/test/test_frame.py
index 212255374bddd1..26100fe6e8421a 100644
--- a/Lib/test/test_frame.py
+++ b/Lib/test/test_frame.py
@@ -13,9 +13,11 @@
 except ImportError:
     _testcapi = None
 
+from collections.abc import Mapping
 from test import support
 from test.support import import_helper, threading_helper, Py_GIL_DISABLED
 from test.support.script_helper import assert_python_ok
+from test import mapping_tests
 
 
 class ClearTest(unittest.TestCase):
@@ -371,6 +373,15 @@ def test_local_objects(self):
         f_locals['o'] = f_locals['k']
         self.assertEqual(o, 'a.b.c')
 
+    def test_copy(self):
+        x = 0
+        d = sys._getframe().f_locals
+        d_copy = d.copy()
+        self.assertIsInstance(d_copy, dict)
+        self.assertEqual(d_copy['x'], 0)
+        d_copy['x'] = 1
+        self.assertEqual(x, 0)
+
     def test_update_with_self(self):
         def f():
             f_locals = sys._getframe().f_locals
@@ -388,15 +399,41 @@ def test_repr(self):
     def test_delete(self):
         x = 1
         d = sys._getframe().f_locals
-        with self.assertRaises(TypeError):
+
+        # This needs to be tested before f_extra_locals is created
+        with self.assertRaisesRegex(KeyError, 'non_exist'):
+            del d['non_exist']
+
+        with self.assertRaises(KeyError):
+            d.pop('non_exist')
+
+        with self.assertRaisesRegex(ValueError, 'local variables'):
             del d['x']
 
         with self.assertRaises(AttributeError):
             d.clear()
 
-        with self.assertRaises(AttributeError):
+        with self.assertRaises(ValueError):
             d.pop('x')
 
+        with self.assertRaises(ValueError):
+            d.pop('x', None)
+
+        # 'm', 'n' is stored in f_extra_locals
+        d['m'] = 1
+        d['n'] = 1
+
+        with self.assertRaises(KeyError):
+            d.pop('non_exist')
+
+        del d['m']
+        self.assertEqual(d.pop('n'), 1)
+
+        self.assertNotIn('m', d)
+        self.assertNotIn('n', d)
+
+        self.assertEqual(d.pop('n', 2), 2)
+
     @support.cpython_only
     def test_sizeof(self):
         proxy = sys._getframe().f_locals
@@ -405,15 +442,170 @@ def test_sizeof(self):
     def test_unsupport(self):
         x = 1
         d = sys._getframe().f_locals
-        with self.assertRaises(AttributeError):
-            d.copy()
-
         with self.assertRaises(TypeError):
             copy.copy(d)
 
         with self.assertRaises(TypeError):
             copy.deepcopy(d)
 
+    def test_is_mapping(self):
+        x = 1
+        d = sys._getframe().f_locals
+        self.assertIsInstance(d, Mapping)
+        match d:
+            case {"x": value}:
+                self.assertEqual(value, 1)
+                kind = "mapping"
+            case _:
+                kind = "other"
+        self.assertEqual(kind, "mapping")
+
+    def _x_stringlikes(self):
+        class StringSubclass(str):
+            pass
+
+        class ImpostorX:
+            def __hash__(self):
+                return hash('x')
+
+            def __eq__(self, other):
+                return other == 'x'
+
+        return StringSubclass('x'), ImpostorX(), 'x'
+
+    def test_proxy_key_stringlikes_overwrite(self):
+        def f(obj):
+            x = 1
+            proxy = sys._getframe().f_locals
+            proxy[obj] = 2
+            return (
+                list(proxy.keys()),
+                dict(proxy),
+                proxy
+            )
+
+        for obj in self._x_stringlikes():
+            with self.subTest(cls=type(obj).__name__):
+
+                keys_snapshot, proxy_snapshot, proxy = f(obj)
+                expected_keys = ['obj', 'x', 'proxy']
+                expected_dict = {'obj': 'x', 'x': 2, 'proxy': proxy}
+                self.assertEqual(proxy.keys(),  expected_keys)
+                self.assertEqual(proxy, expected_dict)
+                self.assertEqual(keys_snapshot,  expected_keys)
+                self.assertEqual(proxy_snapshot, expected_dict)
+
+    def test_proxy_key_stringlikes_ftrst_write(self):
+        def f(obj):
+            proxy = sys._getframe().f_locals
+            proxy[obj] = 2
+            self.assertEqual(x, 2)
+            x = 1
+
+        for obj in self._x_stringlikes():
+            with self.subTest(cls=type(obj).__name__):
+                f(obj)
+
+    def test_proxy_key_unhashables(self):
+        class StringSubclass(str):
+            __hash__ = None
+
+        class ObjectSubclass:
+            __hash__ = None
+
+        proxy = sys._getframe().f_locals
+
+        for obj in StringSubclass('x'), ObjectSubclass():
+            with self.subTest(cls=type(obj).__name__):
+                with self.assertRaises(TypeError):
+                    proxy[obj]
+                with self.assertRaises(TypeError):
+                    proxy[obj] = 0
+
+    def test_constructor(self):
+        FrameLocalsProxy = type([sys._getframe().f_locals
+                                 for x in range(1)][0])
+        self.assertEqual(FrameLocalsProxy.__name__, 'FrameLocalsProxy')
+
+        def make_frame():
+            x = 1
+            y = 2
+            return sys._getframe()
+
+        proxy = FrameLocalsProxy(make_frame())
+        self.assertEqual(proxy, {'x': 1, 'y': 2})
+
+        # constructor expects 1 frame argument
+        with self.assertRaises(TypeError):
+            FrameLocalsProxy()     # no arguments
+        with self.assertRaises(TypeError):
+            FrameLocalsProxy(123)  # wrong type
+        with self.assertRaises(TypeError):
+            FrameLocalsProxy(frame=sys._getframe())  # no keyword arguments
+
+
+class FrameLocalsProxyMappingTests(mapping_tests.TestHashMappingProtocol):
+    """Test that FrameLocalsProxy behaves like a Mapping (with exceptions)"""
+
+    def _f(*args, **kwargs):
+        def _f():
+            return sys._getframe().f_locals
+        return _f()
+    type2test = _f
+
+    @unittest.skipIf(True, 'Locals proxies for different frames never compare as equal')
+    def test_constructor(self):
+        pass
+
+    @unittest.skipIf(True, 'Unlike a mapping: del proxy[key] fails')
+    def test_write(self):
+        pass
+
+    @unittest.skipIf(True, 'Unlike a mapping: no proxy.popitem')
+    def test_popitem(self):
+        pass
+
+    @unittest.skipIf(True, 'Unlike a mapping: no proxy.pop')
+    def test_pop(self):
+        pass
+
+    @unittest.skipIf(True, 'Unlike a mapping: no proxy.clear')
+    def test_clear(self):
+        pass
+
+    @unittest.skipIf(True, 'Unlike a mapping: no proxy.fromkeys')
+    def test_fromkeys(self):
+        pass
+
+    # no del
+    def test_getitem(self):
+        mapping_tests.BasicTestMappingProtocol.test_getitem(self)
+        d = self._full_mapping({'a': 1, 'b': 2})
+        self.assertEqual(d['a'], 1)
+        self.assertEqual(d['b'], 2)
+        d['c'] = 3
+        d['a'] = 4
+        self.assertEqual(d['c'], 3)
+        self.assertEqual(d['a'], 4)
+
+    @unittest.skipIf(True, 'Unlike a mapping: no proxy.update')
+    def test_update(self):
+        pass
+
+    # proxy.copy returns a regular dict
+    def test_copy(self):
+        d = self._full_mapping({1:1, 2:2, 3:3})
+        self.assertEqual(d.copy(), {1:1, 2:2, 3:3})
+        d = self._empty_mapping()
+        self.assertEqual(d.copy(), d)
+        self.assertRaises(TypeError, d.copy, None)
+
+        self.assertIsInstance(d.copy(), dict)
+
+    @unittest.skipIf(True, 'Locals proxies for different frames never compare as equal')
+    def test_eq(self):
+        pass
+
 
 class TestFrameCApi(unittest.TestCase):
     def test_basic(self):
diff --git a/Lib/test/test_free_threading/__init__.py b/Lib/test/test_free_threading/__init__.py
index 9a89d27ba9f979..34e1ad30e11097 100644
--- a/Lib/test/test_free_threading/__init__.py
+++ b/Lib/test/test_free_threading/__init__.py
@@ -1,7 +1,11 @@
 import os
+import unittest
 
 from test import support
 
 
+if not support.Py_GIL_DISABLED:
+    raise unittest.SkipTest("GIL enabled")
+
 def load_tests(*args):
     return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_free_threading/test_code.py b/Lib/test/test_free_threading/test_code.py
new file mode 100644
index 00000000000000..a5136a3ba4edc7
--- /dev/null
+++ b/Lib/test/test_free_threading/test_code.py
@@ -0,0 +1,30 @@
+import unittest
+
+from threading import Thread
+from unittest import TestCase
+
+from test.support import threading_helper
+
+@threading_helper.requires_working_threading()
+class TestCode(TestCase):
+    def test_code_attrs(self):
+        """Test concurrent accesses to lazily initialized code attributes"""
+        code_objects = []
+        for _ in range(1000):
+            code_objects.append(compile("a + b", "<string>", "eval"))
+
+        def run_in_thread():
+            for code in code_objects:
+                self.assertIsInstance(code.co_code, bytes)
+                self.assertIsInstance(code.co_freevars, tuple)
+                self.assertIsInstance(code.co_varnames, tuple)
+
+        threads = [Thread(target=run_in_thread) for _ in range(2)]
+        for thread in threads:
+            thread.start()
+        for thread in threads:
+            thread.join()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_free_threading/test_dict.py b/Lib/test/test_free_threading/test_dict.py
index f877582e6b565c..3126458e08e50a 100644
--- a/Lib/test/test_free_threading/test_dict.py
+++ b/Lib/test/test_free_threading/test_dict.py
@@ -8,7 +8,10 @@
 from threading import Thread
 from unittest import TestCase
 
-from _testcapi import dict_version
+try:
+    import _testcapi
+except ImportError:
+    _testcapi = None
 
 from test.support import threading_helper
 
@@ -139,7 +142,9 @@ def writer_func(l):
             for ref in thread_list:
                 self.assertIsNone(ref())
 
+    @unittest.skipIf(_testcapi is None, 'need _testcapi module')
     def test_dict_version(self):
+        dict_version = _testcapi.dict_version
         THREAD_COUNT = 10
         DICT_COUNT = 10000
         lists = []
diff --git a/Lib/test/test_free_threading/test_gc.py b/Lib/test/test_free_threading/test_gc.py
new file mode 100644
index 00000000000000..401067fe9c612c
--- /dev/null
+++ b/Lib/test/test_free_threading/test_gc.py
@@ -0,0 +1,61 @@
+import unittest
+
+import threading
+from threading import Thread
+from unittest import TestCase
+import gc
+
+from test.support import threading_helper
+
+
+class MyObj:
+    pass
+
+
+@threading_helper.requires_working_threading()
+class TestGC(TestCase):
+    def test_get_objects(self):
+        event = threading.Event()
+
+        def gc_thread():
+            for i in range(100):
+                o = gc.get_objects()
+            event.set()
+
+        def mutator_thread():
+            while not event.is_set():
+                o1 = MyObj()
+                o2 = MyObj()
+                o3 = MyObj()
+                o4 = MyObj()
+
+        gcs = [Thread(target=gc_thread)]
+        mutators = [Thread(target=mutator_thread) for _ in range(4)]
+        with threading_helper.start_threads(gcs + mutators):
+            pass
+
+    def test_get_referrers(self):
+        event = threading.Event()
+
+        obj = MyObj()
+
+        def gc_thread():
+            for i in range(100):
+                o = gc.get_referrers(obj)
+            event.set()
+
+        def mutator_thread():
+            while not event.is_set():
+                d1 = { "key": obj }
+                d2 = { "key": obj }
+                d3 = { "key": obj }
+                d4 = { "key": obj }
+
+        gcs = [Thread(target=gc_thread) for _ in range(2)]
+        mutators = [Thread(target=mutator_thread) for _ in range(4)]
+        with threading_helper.start_threads(gcs + mutators):
+            pass
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_free_threading/test_list.py b/Lib/test/test_free_threading/test_list.py
index 6ad806d67a80ed..a705161369e8dd 100644
--- a/Lib/test/test_free_threading/test_list.py
+++ b/Lib/test/test_free_threading/test_list.py
@@ -6,6 +6,10 @@
 from test.support import threading_helper
 
 
+NTHREAD = 10
+OBJECT_COUNT = 5_000
+
+
 class C:
     def __init__(self, v):
         self.v = v
@@ -14,9 +18,7 @@ def __init__(self, v):
 @threading_helper.requires_working_threading()
 class TestList(TestCase):
     def test_racing_iter_append(self):
-
         l = []
-        OBJECT_COUNT = 10000
 
         def writer_func():
             for i in range(OBJECT_COUNT):
@@ -32,7 +34,7 @@ def reader_func():
 
         writer = Thread(target=writer_func)
         readers = []
-        for x in range(30):
+        for x in range(NTHREAD):
             reader = Thread(target=reader_func)
             readers.append(reader)
             reader.start()
@@ -43,37 +45,31 @@ def reader_func():
             reader.join()
 
     def test_racing_iter_extend(self):
-        iters = [
-            lambda x: [x],
-        ]
-        for iter_case in iters:
-            with self.subTest(iter=iter_case):
-                l = []
-                OBJECT_COUNT = 10000
-
-                def writer_func():
-                    for i in range(OBJECT_COUNT):
-                        l.extend(iter_case(C(i + OBJECT_COUNT)))
-
-                def reader_func():
-                    while True:
-                        count = len(l)
-                        for i, x in enumerate(l):
-                            self.assertEqual(x.v, i + OBJECT_COUNT)
-                        if count == OBJECT_COUNT:
-                            break
-
-                writer = Thread(target=writer_func)
-                readers = []
-                for x in range(30):
-                    reader = Thread(target=reader_func)
-                    readers.append(reader)
-                    reader.start()
-
-                writer.start()
-                writer.join()
-                for reader in readers:
-                    reader.join()
+        l = []
+
+        def writer_func():
+            for i in range(OBJECT_COUNT):
+                l.extend([C(i + OBJECT_COUNT)])
+
+        def reader_func():
+            while True:
+                count = len(l)
+                for i, x in enumerate(l):
+                    self.assertEqual(x.v, i + OBJECT_COUNT)
+                if count == OBJECT_COUNT:
+                    break
+
+        writer = Thread(target=writer_func)
+        readers = []
+        for x in range(NTHREAD):
+            reader = Thread(target=reader_func)
+            readers.append(reader)
+            reader.start()
+
+        writer.start()
+        writer.join()
+        for reader in readers:
+            reader.join()
 
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_free_threading/test_monitoring.py b/Lib/test/test_free_threading/test_monitoring.py
index 3a3f1ba3b605d6..8fec01715531cb 100644
--- a/Lib/test/test_free_threading/test_monitoring.py
+++ b/Lib/test/test_free_threading/test_monitoring.py
@@ -1,5 +1,5 @@
 """Tests monitoring, sys.settrace, and sys.setprofile in a multi-threaded
-environmenet to verify things are thread-safe in a free-threaded build"""
+environment to verify things are thread-safe in a free-threaded build"""
 
 import sys
 import time
@@ -14,7 +14,7 @@
 
 class InstrumentationMultiThreadedMixin:
     thread_count = 10
-    func_count = 200
+    func_count = 50
     fib = 12
 
     def after_threads(self):
@@ -36,7 +36,7 @@ def work(self, n, funcs):
     def start_work(self, n, funcs):
         # With the GIL builds we need to make sure that the hooks have
         # a chance to run as it's possible to run w/o releasing the GIL.
-        time.sleep(1)
+        time.sleep(0.1)
         self.work(n, funcs)
 
     def after_test(self):
@@ -223,23 +223,26 @@ def trace(frame, event, arg):
             frame.f_trace_opcodes = True
             return trace
 
+        loops = 1_000
+
         sys.settrace(trace)
         try:
             l = _PyRLock()
 
             def f():
-                for i in range(3000):
+                for i in range(loops):
                     with l:
                         pass
 
             t = Thread(target=f)
             t.start()
-            for i in range(3000):
+            for i in range(loops):
                 with l:
                     pass
             t.join()
         finally:
             sys.settrace(None)
 
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_free_threading/test_slots.py b/Lib/test/test_free_threading/test_slots.py
new file mode 100644
index 00000000000000..758f74f54d0b56
--- /dev/null
+++ b/Lib/test/test_free_threading/test_slots.py
@@ -0,0 +1,43 @@
+import threading
+from test.support import threading_helper
+from unittest import TestCase
+
+
+def run_in_threads(targets):
+    """Run `targets` in separate threads"""
+    threads = [
+        threading.Thread(target=target)
+        for target in targets
+    ]
+    for thread in threads:
+        thread.start()
+    for thread in threads:
+        thread.join()
+
+
+@threading_helper.requires_working_threading()
+class TestSlots(TestCase):
+
+    def test_object(self):
+        class Spam:
+            __slots__ = [
+                "eggs",
+            ]
+
+            def __init__(self, initial_value):
+                self.eggs = initial_value
+
+        spam = Spam(0)
+        iters = 20_000
+
+        def writer():
+            for _ in range(iters):
+                spam.eggs += 1
+
+        def reader():
+            for _ in range(iters):
+                eggs = spam.eggs
+                assert type(eggs) is int
+                assert 0 <= eggs <= iters
+
+        run_in_threads([writer, reader, reader, reader])
diff --git a/Lib/test/test_free_threading/test_str.py b/Lib/test/test_free_threading/test_str.py
new file mode 100644
index 00000000000000..f5e93b7de0aa9b
--- /dev/null
+++ b/Lib/test/test_free_threading/test_str.py
@@ -0,0 +1,75 @@
+import sys
+import unittest
+
+from itertools import cycle
+from threading import Event, Thread
+from unittest import TestCase
+
+from test.support import threading_helper
+
+@threading_helper.requires_working_threading()
+class TestStr(TestCase):
+    def test_racing_join_extend(self):
+        '''Test joining a string being extended by another thread'''
+        l = []
+        ITERS = 100
+        READERS = 10
+        done_event = Event()
+        def writer_func():
+            for i in range(ITERS):
+                l.extend(map(str, range(i)))
+                l.clear()
+            done_event.set()
+        def reader_func():
+            while not done_event.is_set():
+                ''.join(l)
+        writer = Thread(target=writer_func)
+        readers = []
+        for x in range(READERS):
+            reader = Thread(target=reader_func)
+            readers.append(reader)
+            reader.start()
+
+        writer.start()
+        writer.join()
+        for reader in readers:
+            reader.join()
+
+    def test_racing_join_replace(self):
+        '''
+        Test joining a string of characters being replaced with ephemeral
+        strings by another thread.
+        '''
+        l = [*'abcdefg']
+        MAX_ORDINAL = 1_000
+        READERS = 10
+        done_event = Event()
+
+        def writer_func():
+            for i, c in zip(cycle(range(len(l))),
+                            map(chr, range(128, MAX_ORDINAL))):
+                l[i] = c
+            done_event.set()
+
+        def reader_func():
+            while not done_event.is_set():
+                ''.join(l)
+                ''.join(l)
+                ''.join(l)
+                ''.join(l)
+
+        writer = Thread(target=writer_func)
+        readers = []
+        for x in range(READERS):
+            reader = Thread(target=reader_func)
+            readers.append(reader)
+            reader.start()
+
+        writer.start()
+        writer.join()
+        for reader in readers:
+            reader.join()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_free_threading/test_tokenize.py b/Lib/test/test_free_threading/test_tokenize.py
new file mode 100644
index 00000000000000..860cfec4d710f4
--- /dev/null
+++ b/Lib/test/test_free_threading/test_tokenize.py
@@ -0,0 +1,57 @@
+import io
+import time
+import unittest
+import tokenize
+from functools import partial
+from threading import Thread
+
+from test.support import threading_helper
+
+
+@threading_helper.requires_working_threading()
+class TestTokenize(unittest.TestCase):
+    def test_tokenizer_iter(self):
+        source = io.StringIO("for _ in a:\n  pass")
+        it = tokenize._tokenize.TokenizerIter(source.readline, extra_tokens=False)
+
+        tokens = []
+        def next_token(it):
+            while True:
+                try:
+                    r = next(it)
+                    tokens.append(tokenize.TokenInfo._make(r))
+                    time.sleep(0.03)
+                except StopIteration:
+                    return
+
+        threads = []
+        for _ in range(5):
+            threads.append(Thread(target=partial(next_token, it)))
+
+        for thread in threads:
+            thread.start()
+
+        for thread in threads:
+            thread.join()
+
+        expected_tokens = [
+            tokenize.TokenInfo(type=1, string='for', start=(1, 0), end=(1, 3), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=1, string='_', start=(1, 4), end=(1, 5), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=1, string='in', start=(1, 6), end=(1, 8), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=1, string='a', start=(1, 9), end=(1, 10), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=11, string=':', start=(1, 10), end=(1, 11), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=4, string='', start=(1, 11), end=(1, 11), line='for _ in a:\n'),
+            tokenize.TokenInfo(type=5, string='', start=(2, -1), end=(2, -1), line='  pass'),
+            tokenize.TokenInfo(type=1, string='pass', start=(2, 2), end=(2, 6), line='  pass'),
+            tokenize.TokenInfo(type=4, string='', start=(2, 6), end=(2, 6), line='  pass'),
+            tokenize.TokenInfo(type=6, string='', start=(2, -1), end=(2, -1), line='  pass'),
+            tokenize.TokenInfo(type=0, string='', start=(2, -1), end=(2, -1), line='  pass'),
+        ]
+
+        tokens.sort()
+        expected_tokens.sort()
+        self.assertListEqual(tokens, expected_tokens)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_free_threading/test_type.py b/Lib/test/test_free_threading/test_type.py
index 6eead198deed46..d847acfd6f9edb 100644
--- a/Lib/test/test_free_threading/test_type.py
+++ b/Lib/test/test_free_threading/test_type.py
@@ -1,10 +1,12 @@
+import threading
 import unittest
 
 from concurrent.futures import ThreadPoolExecutor
 from threading import Thread
 from unittest import TestCase
 
-from test.support import threading_helper, import_helper
+from test import support
+from test.support import threading_helper
 
 
 
@@ -95,6 +97,49 @@ def reader_func():
 
         self.run_one(writer_func, reader_func)
 
+    def test___class___modification(self):
+        loops = 200
+
+        class Foo:
+            pass
+
+        class Bar:
+            pass
+
+        thing = Foo()
+        def work():
+            foo = thing
+            for _ in range(loops):
+                foo.__class__ = Bar
+                type(foo)
+                foo.__class__ = Foo
+                type(foo)
+
+
+        threads = []
+        for i in range(NTHREADS):
+            thread = threading.Thread(target=work)
+            thread.start()
+            threads.append(thread)
+
+        for thread in threads:
+            thread.join()
+
+    def test_object_class_change(self):
+        class Base:
+            def __init__(self):
+                self.attr = 123
+        class ClassA(Base):
+            pass
+        class ClassB(Base):
+            pass
+
+        obj = ClassA()
+        # keep reference to __dict__
+        d = obj.__dict__
+        obj.__class__ = ClassB
+
+
     def run_one(self, writer_func, reader_func):
         writer = Thread(target=writer_func)
         readers = []
diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py
index 27c7f70cef32e3..6e217ef63be618 100644
--- a/Lib/test/test_fstring.py
+++ b/Lib/test/test_fstring.py
@@ -8,6 +8,7 @@
 # Unicode identifiers in tests is allowed by PEP 3131.
 
 import ast
+import datetime
 import dis
 import os
 import re
@@ -744,13 +745,13 @@ def test_comments(self):
 }''', 'A complex trick: 2')
         self.assertEqual(f'''
 {
-40 # fourty
+40 # forty
 +  # plus
 2  # two
 }''', '\n42')
         self.assertEqual(f'''
 {
-40 # fourty
+40 # forty
 +  # plus
 2  # two
 }''', '\n42')
@@ -896,6 +897,7 @@ def test_missing_expression(self):
                              "f'{:2}'",
                              "f'''{\t\f\r\n:a}'''",
                              "f'{:'",
+                             "F'{[F'{:'}[F'{:'}]]]",
                              ])
 
         self.assertAllRaise(SyntaxError,
@@ -1602,6 +1604,12 @@ def f(a):
         self.assertEqual(f'{f(a=4)}', '3=')
         self.assertEqual(x, 4)
 
+        # Check debug expressions in format spec
+        y = 20
+        self.assertEqual(f"{2:{y=}}", "yyyyyyyyyyyyyyyyyyy2")
+        self.assertEqual(f"{datetime.datetime.now():h1{y=}h2{y=}h3{y=}}",
+                         'h1y=20h2y=20h3y=20')
+
         # Make sure __format__ is being called.
         class C:
             def __format__(self, s):
@@ -1615,9 +1623,11 @@ def __repr__(self):
         self.assertEqual(f'{C()=: }', 'C()=FORMAT- ')
         self.assertEqual(f'{C()=:x}', 'C()=FORMAT-x')
         self.assertEqual(f'{C()=!r:*^20}', 'C()=********REPR********')
+        self.assertEqual(f"{C():{20=}}", 'FORMAT-20=20')
 
         self.assertRaises(SyntaxError, eval, "f'{C=]'")
 
+
         # Make sure leading and following text works.
         x = 'foo'
         self.assertEqual(f'X{x=}Y', 'Xx='+repr(x)+'Y')
@@ -1640,6 +1650,14 @@ def __repr__(self):
         #self.assertEqual(f'X{x =}Y', 'Xx\t='+repr(x)+'Y')
         #self.assertEqual(f'X{x =       }Y', 'Xx\t=\t'+repr(x)+'Y')
 
+    def test_debug_expressions_are_raw_strings(self):
+
+        self.assertEqual(f'{b"\N{OX}"=}', 'b"\\N{OX}"=b\'\\\\N{OX}\'')
+        self.assertEqual(f'{r"\xff"=}', 'r"\\xff"=\'\\\\xff\'')
+        self.assertEqual(f'{r"\n"=}', 'r"\\n"=\'\\\\n\'')
+        self.assertEqual(f"{'\''=}", "'\\''=\"'\"")
+        self.assertEqual(f'{'\xc5'=}', r"'\xc5'='Å'")
+
     def test_walrus(self):
         x = 20
         # This isn't an assignment expression, it's 'x', with a format
@@ -1748,5 +1766,23 @@ def get_code(s):
         for s in ["", "some string"]:
             self.assertEqual(get_code(f"'{s}'"), get_code(f"f'{s}'"))
 
+    def test_gh129093(self):
+        self.assertEqual(f'{1==2=}', '1==2=False')
+        self.assertEqual(f'{1 == 2=}', '1 == 2=False')
+        self.assertEqual(f'{1!=2=}', '1!=2=True')
+        self.assertEqual(f'{1 != 2=}', '1 != 2=True')
+
+        self.assertEqual(f'{(1) != 2=}', '(1) != 2=True')
+        self.assertEqual(f'{(1*2) != (3)=}', '(1*2) != (3)=True')
+
+        self.assertEqual(f'{1 != 2 == 3 != 4=}', '1 != 2 == 3 != 4=False')
+        self.assertEqual(f'{1 == 2 != 3 == 4=}', '1 == 2 != 3 == 4=False')
+
+        self.assertEqual(f'{f'{1==2=}'=}', "f'{1==2=}'='1==2=False'")
+        self.assertEqual(f'{f'{1 == 2=}'=}', "f'{1 == 2=}'='1 == 2=False'")
+        self.assertEqual(f'{f'{1!=2=}'=}', "f'{1!=2=}'='1!=2=True'")
+        self.assertEqual(f'{f'{1 != 2=}'=}', "f'{1 != 2=}'='1 != 2=True'")
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_funcattrs.py b/Lib/test/test_funcattrs.py
index b3fc5ad42e7fde..d919d62613ea7c 100644
--- a/Lib/test/test_funcattrs.py
+++ b/Lib/test/test_funcattrs.py
@@ -98,7 +98,12 @@ def test___globals__(self):
                              (AttributeError, TypeError))
 
     def test___builtins__(self):
-        self.assertIs(self.b.__builtins__, __builtins__)
+        if __name__ == "__main__":
+            builtins_dict = __builtins__.__dict__
+        else:
+            builtins_dict = __builtins__
+
+        self.assertIs(self.b.__builtins__, builtins_dict)
         self.cannot_set_attr(self.b, '__builtins__', 2,
                              (AttributeError, TypeError))
 
@@ -108,7 +113,7 @@ def func(s): return len(s)
         ns = {}
         func2 = type(func)(func.__code__, ns)
         self.assertIs(func2.__globals__, ns)
-        self.assertIs(func2.__builtins__, __builtins__)
+        self.assertIs(func2.__builtins__, builtins_dict)
 
         # Make sure that the function actually works.
         self.assertEqual(func2("abc"), 3)
diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index 4a9a7313712f60..894adb699c87f2 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -395,6 +395,29 @@ def __getitem__(self, key):
         f = self.partial(object)
         self.assertRaises(TypeError, f.__setstate__, BadSequence())
 
+    def test_partial_as_method(self):
+        class A:
+            meth = self.partial(capture, 1, a=2)
+            cmeth = classmethod(self.partial(capture, 1, a=2))
+            smeth = staticmethod(self.partial(capture, 1, a=2))
+
+        a = A()
+        self.assertEqual(A.meth(3, b=4), ((1, 3), {'a': 2, 'b': 4}))
+        self.assertEqual(A.cmeth(3, b=4), ((1, A, 3), {'a': 2, 'b': 4}))
+        self.assertEqual(A.smeth(3, b=4), ((1, 3), {'a': 2, 'b': 4}))
+        with self.assertWarns(FutureWarning) as w:
+            self.assertEqual(a.meth(3, b=4), ((1, 3), {'a': 2, 'b': 4}))
+        self.assertEqual(w.filename, __file__)
+        self.assertEqual(a.cmeth(3, b=4), ((1, A, 3), {'a': 2, 'b': 4}))
+        self.assertEqual(a.smeth(3, b=4), ((1, 3), {'a': 2, 'b': 4}))
+
+    def test_partial_genericalias(self):
+        alias = self.partial[int]
+        self.assertIs(alias.__origin__, self.partial)
+        self.assertEqual(alias.__args__, (int,))
+        self.assertEqual(alias.__parameters__, ())
+
+
 @unittest.skipUnless(c_functools, 'requires the C _functools module')
 class TestPartialC(TestPartial, unittest.TestCase):
     if c_functools:
@@ -569,6 +592,14 @@ class B:
                 method = functools.partialmethod(func=capture, a=1)
 
     def test_repr(self):
+        self.assertEqual(repr(vars(self.A)['nothing']),
+                         'functools.partialmethod({})'.format(capture))
+        self.assertEqual(repr(vars(self.A)['positional']),
+                         'functools.partialmethod({}, 1)'.format(capture))
+        self.assertEqual(repr(vars(self.A)['keywords']),
+                         'functools.partialmethod({}, a=2)'.format(capture))
+        self.assertEqual(repr(vars(self.A)['spec_keywords']),
+                         'functools.partialmethod({}, self=1, func=2)'.format(capture))
         self.assertEqual(repr(vars(self.A)['both']),
                          'functools.partialmethod({}, 3, b=4)'.format(capture))
 
@@ -710,6 +741,14 @@ def wrapper():
         self.assertTrue(wrapper.__doc__.startswith('max('))
         self.assertEqual(wrapper.__annotations__, {})
 
+    def test_update_type_wrapper(self):
+        def wrapper(*args): pass
+
+        functools.update_wrapper(wrapper, type)
+        self.assertEqual(wrapper.__name__, 'type')
+        self.assertEqual(wrapper.__annotations__, {})
+        self.assertEqual(wrapper.__type_params__, ())
+
 
 class TestWraps(TestUpdateWrapper):
 
diff --git a/Lib/test/test_future_stmt/test_future.py b/Lib/test/test_future_stmt/test_future.py
index 69ae58b0fbcae3..94a6f46d0dcaf9 100644
--- a/Lib/test/test_future_stmt/test_future.py
+++ b/Lib/test/test_future_stmt/test_future.py
@@ -88,7 +88,7 @@ def test_unknown_future_flag(self):
         """
         self.assertSyntaxError(
             code, lineno=2,
-            message='future feature rested_snopes is not defined',
+            message='future feature rested_snopes is not defined', offset=24,
         )
 
     def test_future_import_not_on_top(self):
@@ -137,19 +137,19 @@ def test_future_import_star(self):
         code = """
             from __future__ import *
         """
-        self.assertSyntaxError(code, message='future feature * is not defined')
+        self.assertSyntaxError(code, message='future feature * is not defined', offset=24)
 
     def test_future_import_braces(self):
         code = """
             from __future__ import braces
         """
         # Congrats, you found an easter egg!
-        self.assertSyntaxError(code, message='not a chance')
+        self.assertSyntaxError(code, message='not a chance', offset=24)
 
         code = """
             from __future__ import nested_scopes, braces
         """
-        self.assertSyntaxError(code, message='not a chance')
+        self.assertSyntaxError(code, message='not a chance', offset=39)
 
     def test_module_with_future_import_not_on_top(self):
         with self.assertRaises(SyntaxError) as cm:
@@ -171,26 +171,6 @@ def test_ensure_flags_dont_clash(self):
         }
         self.assertCountEqual(set(flags.values()), flags.values())
 
-    def test_parserhack(self):
-        # test that the parser.c::future_hack function works as expected
-        # Note: although this test must pass, it's not testing the original
-        #       bug as of 2.6 since the with statement is not optional and
-        #       the parser hack disabled. If a new keyword is introduced in
-        #       2.6, change this to refer to the new future import.
-        try:
-            exec("from __future__ import print_function; print 0")
-        except SyntaxError:
-            pass
-        else:
-            self.fail("syntax error didn't occur")
-
-        try:
-            exec("from __future__ import (print_function); print 0")
-        except SyntaxError:
-            pass
-        else:
-            self.fail("syntax error didn't occur")
-
     def test_unicode_literals_exec(self):
         scope = {}
         exec("from __future__ import unicode_literals; x = ''", {}, scope)
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index 52681dc18cfb86..3e7dda3bac2113 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -3,7 +3,8 @@
 from test import support
 from test.support import (verbose, refcount_test,
                           cpython_only, requires_subprocess,
-                          requires_gil_enabled)
+                          requires_gil_enabled, suppress_immortalization,
+                          Py_GIL_DISABLED)
 from test.support.import_helper import import_module
 from test.support.os_helper import temp_dir, TESTFN, unlink
 from test.support.script_helper import assert_python_ok, make_script
@@ -109,6 +110,7 @@ def test_tuple(self):
         del l
         self.assertEqual(gc.collect(), 2)
 
+    @suppress_immortalization()
     def test_class(self):
         class A:
             pass
@@ -117,6 +119,7 @@ class A:
         del A
         self.assertNotEqual(gc.collect(), 0)
 
+    @suppress_immortalization()
     def test_newstyleclass(self):
         class A(object):
             pass
@@ -133,6 +136,7 @@ class A:
         del a
         self.assertNotEqual(gc.collect(), 0)
 
+    @suppress_immortalization()
     def test_newinstance(self):
         class A(object):
             pass
@@ -219,6 +223,7 @@ class B(object):
             self.fail("didn't find obj in garbage (finalizer)")
         gc.garbage.remove(obj)
 
+    @suppress_immortalization()
     def test_function(self):
         # Tricky: f -> d -> f, code should call d.clear() after the exec to
         # break the cycle.
@@ -387,11 +392,19 @@ def test_collect_generations(self):
         # each call to collect(N)
         x = []
         gc.collect(0)
-        # x is now in the old gen
+        # x is now in gen 1
         a, b, c = gc.get_count()
-        # We don't check a since its exact values depends on
+        gc.collect(1)
+        # x is now in gen 2
+        d, e, f = gc.get_count()
+        gc.collect(2)
+        # x is now in gen 3
+        g, h, i = gc.get_count()
+        # We don't check a, d, g since their exact values depends on
         # internal implementation details of the interpreter.
         self.assertEqual((b, c), (1, 0))
+        self.assertEqual((e, f), (0, 1))
+        self.assertEqual((h, i), (0, 0))
 
     def test_trashcan(self):
         class Ouch:
@@ -561,6 +574,7 @@ def test_get_referents(self):
 
         self.assertEqual(gc.get_referents(1, 'a', 4j), [])
 
+    @suppress_immortalization()
     def test_is_tracked(self):
         # Atomic built-in types are not tracked, user-defined objects and
         # mutable containers are.
@@ -598,7 +612,9 @@ class UserFloatSlots(float):
         class UserIntSlots(int):
             __slots__ = ()
 
-        self.assertTrue(gc.is_tracked(gc))
+        if not Py_GIL_DISABLED:
+            # gh-117783: modules may be immortalized in free-threaded build
+            self.assertTrue(gc.is_tracked(gc))
         self.assertTrue(gc.is_tracked(UserClass))
         self.assertTrue(gc.is_tracked(UserClass()))
         self.assertTrue(gc.is_tracked(UserInt()))
@@ -827,10 +843,42 @@ def test_get_objects_generations(self):
         self.assertTrue(
                 any(l is element for element in gc.get_objects(generation=0))
         )
-        gc.collect()
+        self.assertFalse(
+                any(l is element for element in  gc.get_objects(generation=1))
+        )
+        self.assertFalse(
+                any(l is element for element in gc.get_objects(generation=2))
+        )
+        gc.collect(generation=0)
         self.assertFalse(
                 any(l is element for element in gc.get_objects(generation=0))
         )
+        self.assertTrue(
+                any(l is element for element in  gc.get_objects(generation=1))
+        )
+        self.assertFalse(
+                any(l is element for element in gc.get_objects(generation=2))
+        )
+        gc.collect(generation=1)
+        self.assertFalse(
+                any(l is element for element in gc.get_objects(generation=0))
+        )
+        self.assertFalse(
+                any(l is element for element in  gc.get_objects(generation=1))
+        )
+        self.assertTrue(
+                any(l is element for element in gc.get_objects(generation=2))
+        )
+        gc.collect(generation=2)
+        self.assertFalse(
+                any(l is element for element in gc.get_objects(generation=0))
+        )
+        self.assertFalse(
+                any(l is element for element in  gc.get_objects(generation=1))
+        )
+        self.assertTrue(
+                any(l is element for element in gc.get_objects(generation=2))
+        )
         del l
         gc.collect()
 
@@ -1040,70 +1088,84 @@ class Z:
         callback.assert_not_called()
         gc.enable()
 
+    @cpython_only
+    def test_get_referents_on_capsule(self):
+        # gh-124538: Calling gc.get_referents() on an untracked capsule must not crash.
+        import _datetime
+        import _socket
+        untracked_capsule = _datetime.datetime_CAPI
+        tracked_capsule = _socket.CAPI
+
+        # For whoever sees this in the future: if this is failing
+        # after making datetime's capsule tracked, that's fine -- this isn't something
+        # users are relying on. Just find a different capsule that is untracked.
+        self.assertFalse(gc.is_tracked(untracked_capsule))
+        self.assertTrue(gc.is_tracked(tracked_capsule))
+
+        self.assertEqual(len(gc.get_referents(untracked_capsule)), 0)
+        gc.get_referents(tracked_capsule)
 
-class IncrementalGCTests(unittest.TestCase):
+    @cpython_only
+    def test_get_objects_during_gc(self):
+        # gh-125859: Calling gc.get_objects() or gc.get_referrers() during a
+        # collection should not crash.
+        test = self
+        collected = False
 
-    def setUp(self):
-        # Reenable GC as it is disabled module-wide
-        gc.enable()
+        class GetObjectsOnDel:
+            def __del__(self):
+                nonlocal collected
+                collected = True
+                objs = gc.get_objects()
+                # NB: can't use "in" here because some objects override __eq__
+                for obj in objs:
+                    test.assertTrue(obj is not self)
+                test.assertEqual(gc.get_referrers(self), [])
+
+        obj = GetObjectsOnDel()
+        obj.cycle = obj
+        del obj
 
-    def tearDown(self):
-        gc.disable()
+        gc.collect()
+        self.assertTrue(collected)
 
-    @requires_gil_enabled("Free threading does not support incremental GC")
-    # Use small increments to emulate longer running process in a shorter time
-    @gc_threshold(200, 10)
-    def test_incremental_gc_handles_fast_cycle_creation(self):
-
-        class LinkedList:
-
-            #Use slots to reduce number of implicit objects
-            __slots__ = "next", "prev", "surprise"
-
-            def __init__(self, next=None, prev=None):
-                self.next = next
-                if next is not None:
-                    next.prev = self
-                self.prev = prev
-                if prev is not None:
-                    prev.next = self
-
-        def make_ll(depth):
-            head = LinkedList()
-            for i in range(depth):
-                head = LinkedList(head, head.prev)
-            return head
-
-        head = make_ll(1000)
-        count = 1000
-
-        # There will be some objects we aren't counting,
-        # e.g. the gc stats dicts. This test checks
-        # that the counts don't grow, so we try to
-        # correct for the uncounted objects
-        # This is just an estimate.
-        CORRECTION = 20
-
-        enabled = gc.isenabled()
-        gc.enable()
-        olds = []
-        for i in range(20_000):
-            newhead = make_ll(20)
-            count += 20
-            newhead.surprise = head
-            olds.append(newhead)
-            if len(olds) == 20:
-                stats = gc.get_stats()
-                young = stats[0]
-                incremental = stats[1]
-                old = stats[2]
-                collected = young['collected'] + incremental['collected'] + old['collected']
-                count += CORRECTION
-                live = count - collected
-                self.assertLess(live, 25000)
-                del olds[:]
-        if not enabled:
-            gc.disable()
+    def test_traverse_frozen_objects(self):
+        # See GH-126312: Objects that were not frozen could traverse over
+        # a frozen object on the free-threaded build, which would cause
+        # a negative reference count.
+        x = [1, 2, 3]
+        gc.freeze()
+        y = [x]
+        y.append(y)
+        del y
+        gc.collect()
+        gc.unfreeze()
+
+    def test_deferred_refcount_frozen(self):
+        # Also from GH-126312: objects that use deferred reference counting
+        # weren't ignored if they were frozen. Unfortunately, it's pretty
+        # difficult to come up with a case that triggers this.
+        #
+        # Calling gc.collect() while the garbage collector is frozen doesn't
+        # trigger this normally, but it *does* if it's inside unittest for whatever
+        # reason. We can't call unittest from inside a test, so it has to be
+        # in a subprocess.
+        source = textwrap.dedent("""
+        import gc
+        import unittest
+
+
+        class Test(unittest.TestCase):
+            def test_something(self):
+                gc.freeze()
+                gc.collect()
+                gc.unfreeze()
+
+
+        if __name__ == "__main__":
+            unittest.main()
+        """)
+        assert_python_ok("-c", source)
 
 
 class GCCallbackTests(unittest.TestCase):
@@ -1347,6 +1409,10 @@ def callback(ignored):
         junk = []
         i = 0
         detector = GC_Detector()
+        if Py_GIL_DISABLED:
+            # The free-threaded build doesn't have multiple generations, so
+            # just trigger a GC manually.
+            gc.collect()
         while not detector.gc_happened:
             i += 1
             if i > 10000:
@@ -1415,6 +1481,10 @@ def __del__(self):
         detector = GC_Detector()
         junk = []
         i = 0
+        if Py_GIL_DISABLED:
+            # The free-threaded build doesn't have multiple generations, so
+            # just trigger a GC manually.
+            gc.collect()
         while not detector.gc_happened:
             i += 1
             if i > 10000:
diff --git a/Lib/test/test_gdb/__init__.py b/Lib/test/test_gdb/__init__.py
index 99557739af6748..0dd721780233e6 100644
--- a/Lib/test/test_gdb/__init__.py
+++ b/Lib/test/test_gdb/__init__.py
@@ -24,6 +24,9 @@
 if support.check_cflags_pgo():
     raise unittest.SkipTest("test_gdb is not reliable on PGO builds")
 
+if support.check_bolt_optimized():
+    raise unittest.SkipTest("test_gdb is not reliable on BOLT optimized builds")
+
 
 def load_tests(*args):
     return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_gdb/util.py b/Lib/test/test_gdb/util.py
index 8fe9cfc543395e..54c6b2de7cc99d 100644
--- a/Lib/test/test_gdb/util.py
+++ b/Lib/test/test_gdb/util.py
@@ -7,6 +7,7 @@
 import sysconfig
 import unittest
 from test import support
+from test.support.testcase import ExtraAssertions
 
 
 GDB_PROGRAM = shutil.which('gdb') or 'gdb'
@@ -152,7 +153,7 @@ def setup_module():
         print()
 
 
-class DebuggerTests(unittest.TestCase):
+class DebuggerTests(unittest.TestCase, ExtraAssertions):
 
     """Test that the debugger can debug Python."""
 
@@ -280,11 +281,6 @@ def get_stack_trace(self, source=None, script=None,
 
         return out
 
-    def assertEndsWith(self, actual, exp_end):
-        '''Ensure that the given "actual" string ends with "exp_end"'''
-        self.assertTrue(actual.endswith(exp_end),
-                        msg='%r did not end with %r' % (actual, exp_end))
-
     def assertMultilineMatches(self, actual, pattern):
         m = re.match(pattern, actual, re.DOTALL)
         if not m:
diff --git a/Lib/test/test_generated_cases.py b/Lib/test/test_generated_cases.py
index 7b9dd36f85454f..0f34922727edc6 100644
--- a/Lib/test/test_generated_cases.py
+++ b/Lib/test/test_generated_cases.py
@@ -813,6 +813,56 @@ def test_deopt_and_exit(self):
         with self.assertRaises(Exception):
             self.run_cases_test(input, output)
 
+    def test_pop_on_error_peeks(self):
+
+        input = """
+        op(FIRST, (x, y -- a, b)) {
+            a = x;
+            b = y;
+        }
+
+        op(SECOND, (a, b -- a, b)) {
+        }
+
+        op(THIRD, (j, k --)) {
+            ERROR_IF(cond, error);
+        }
+
+        macro(TEST) = FIRST + SECOND + THIRD;
+        """
+        output = """
+        TARGET(TEST) {
+            frame->instr_ptr = next_instr;
+            next_instr += 1;
+            INSTRUCTION_STATS(TEST);
+            PyObject *y;
+            PyObject *x;
+            PyObject *a;
+            PyObject *b;
+            PyObject *k;
+            PyObject *j;
+            // FIRST
+            y = stack_pointer[-1];
+            x = stack_pointer[-2];
+            {
+                a = x;
+                b = y;
+            }
+            // SECOND
+            {
+            }
+            // THIRD
+            k = b;
+            j = a;
+            {
+                if (cond) goto pop_2_error;
+            }
+            stack_pointer += -2;
+            DISPATCH();
+        }
+        """
+        self.run_cases_test(input, output)
+
 class TestGeneratedAbstractCases(unittest.TestCase):
     def setUp(self) -> None:
         super().setUp()
diff --git a/Lib/test/test_generators.py b/Lib/test/test_generators.py
index 6d36df2c7413e0..515fe7407f1d80 100644
--- a/Lib/test/test_generators.py
+++ b/Lib/test/test_generators.py
@@ -6,6 +6,7 @@
 import unittest
 import weakref
 import inspect
+import types
 
 from test import support
 
@@ -89,9 +90,12 @@ def gen():
         self.assertEqual(gc.garbage, old_garbage)
 
     def test_lambda_generator(self):
-        # Issue #23192: Test that a lambda returning a generator behaves
+        # bpo-23192, gh-119897: Test that a lambda returning a generator behaves
         # like the equivalent function
         f = lambda: (yield 1)
+        self.assertIsInstance(f(), types.GeneratorType)
+        self.assertEqual(next(f()), 1)
+
         def g(): return (yield 1)
 
         # test 'yield from'
@@ -242,6 +246,79 @@ def loop():
         #This should not raise
         loop()
 
+
+class ModifyUnderlyingIterableTest(unittest.TestCase):
+    iterables = [
+        range(0),
+        range(20),
+        [1, 2, 3],
+        (2,),
+        {13, 48, 211},
+        frozenset((15, 8, 6)),
+        {1: 2, 3: 4},
+    ]
+
+    non_iterables = [
+        None,
+        42,
+        3.0,
+        2j,
+    ]
+
+    def genexpr(self):
+        return (x for x in range(10))
+
+    def genfunc(self):
+        def gen(it):
+            for x in it:
+                yield x
+        return gen(range(10))
+
+    def process_tests(self, get_generator):
+        for obj in self.iterables:
+            g_obj = get_generator(obj)
+            with self.subTest(g_obj=g_obj, obj=obj):
+                self.assertListEqual(list(g_obj), list(obj))
+
+            g_iter = get_generator(iter(obj))
+            with self.subTest(g_iter=g_iter, obj=obj):
+                self.assertListEqual(list(g_iter), list(obj))
+
+        err_regex = "'.*' object is not iterable"
+        for obj in self.non_iterables:
+            g_obj = get_generator(obj)
+            with self.subTest(g_obj=g_obj):
+                self.assertRaisesRegex(TypeError, err_regex, list, g_obj)
+
+    def test_modify_f_locals(self):
+        def modify_f_locals(g, local, obj):
+            g.gi_frame.f_locals[local] = obj
+            return g
+
+        def get_generator_genexpr(obj):
+            return modify_f_locals(self.genexpr(), '.0', obj)
+
+        def get_generator_genfunc(obj):
+            return modify_f_locals(self.genfunc(), 'it', obj)
+
+        self.process_tests(get_generator_genexpr)
+        self.process_tests(get_generator_genfunc)
+
+    def test_new_gen_from_gi_code(self):
+        def new_gen_from_gi_code(g, obj):
+            generator_func = types.FunctionType(g.gi_code, {})
+            return generator_func(obj)
+
+        def get_generator_genexpr(obj):
+            return new_gen_from_gi_code(self.genexpr(), obj)
+
+        def get_generator_genfunc(obj):
+            return new_gen_from_gi_code(self.genfunc(), obj)
+
+        self.process_tests(get_generator_genexpr)
+        self.process_tests(get_generator_genfunc)
+
+
 class ExceptionTest(unittest.TestCase):
     # Tests for the issue #23353: check that the currently handled exception
     # is correctly saved/restored in PyEval_EvalFrameEx().
@@ -2243,6 +2320,16 @@ def printsolution(self, x):
   ...
 SyntaxError: 'yield' outside function
 
+>>> f=lambda: (yield from (1,2)), (yield from (3,4))
+Traceback (most recent call last):
+  ...
+SyntaxError: 'yield from' outside function
+
+>>> yield from [1,2]
+Traceback (most recent call last):
+  ...
+SyntaxError: 'yield from' outside function
+
 >>> def f(): x = yield = y
 Traceback (most recent call last):
   ...
diff --git a/Lib/test/test_genericpath.py b/Lib/test/test_genericpath.py
index f407ee3caf154c..6d2593cb4cf228 100644
--- a/Lib/test/test_genericpath.py
+++ b/Lib/test/test_genericpath.py
@@ -135,6 +135,9 @@ def test_exists(self):
         self.assertIs(self.pathmodule.exists(filename), False)
         self.assertIs(self.pathmodule.exists(bfilename), False)
 
+        self.assertIs(self.pathmodule.lexists(filename), False)
+        self.assertIs(self.pathmodule.lexists(bfilename), False)
+
         create_file(filename)
 
         self.assertIs(self.pathmodule.exists(filename), True)
@@ -145,14 +148,17 @@ def test_exists(self):
         self.assertIs(self.pathmodule.exists(filename + '\x00'), False)
         self.assertIs(self.pathmodule.exists(bfilename + b'\x00'), False)
 
-        if self.pathmodule is not genericpath:
-            self.assertIs(self.pathmodule.lexists(filename), True)
-            self.assertIs(self.pathmodule.lexists(bfilename), True)
+        self.assertIs(self.pathmodule.lexists(filename), True)
+        self.assertIs(self.pathmodule.lexists(bfilename), True)
+
+        self.assertIs(self.pathmodule.lexists(filename + '\udfff'), False)
+        self.assertIs(self.pathmodule.lexists(bfilename + b'\xff'), False)
+        self.assertIs(self.pathmodule.lexists(filename + '\x00'), False)
+        self.assertIs(self.pathmodule.lexists(bfilename + b'\x00'), False)
 
-            self.assertIs(self.pathmodule.lexists(filename + '\udfff'), False)
-            self.assertIs(self.pathmodule.lexists(bfilename + b'\xff'), False)
-            self.assertIs(self.pathmodule.lexists(filename + '\x00'), False)
-            self.assertIs(self.pathmodule.lexists(bfilename + b'\x00'), False)
+        # Keyword arguments are accepted
+        self.assertIs(self.pathmodule.exists(path=filename), True)
+        self.assertIs(self.pathmodule.lexists(path=filename), True)
 
     @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
     @unittest.skipIf(is_emscripten, "Emscripten pipe fds have no stat")
diff --git a/Lib/test/test_getopt.py b/Lib/test/test_getopt.py
index c8b3442de4aa77..2b7d0c4c84ead4 100644
--- a/Lib/test/test_getopt.py
+++ b/Lib/test/test_getopt.py
@@ -1,11 +1,12 @@
 # test_getopt.py
 # David Goodger <dgoodger@bigfoot.com> 2000-08-19
 
-from test.support.os_helper import EnvironmentVarGuard
 import doctest
-import unittest
-
 import getopt
+import sys
+import unittest
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
+from test.support.os_helper import EnvironmentVarGuard
 
 sentinel = object()
 
@@ -173,10 +174,20 @@ def test_libref_examples():
     ['a1', 'a2']
     """
 
+
+class TestTranslations(TestTranslationsBase):
+    def test_translations(self):
+        self.assertMsgidsEqual(getopt)
+
+
 def load_tests(loader, tests, pattern):
     tests.addTest(doctest.DocTestSuite())
     return tests
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
+    # To regenerate translation snapshots
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_translation_snapshots(getopt)
+        sys.exit(0)
     unittest.main()
diff --git a/Lib/test/test_getpath.py b/Lib/test/test_getpath.py
index 2f7aa69efc184a..d5dcdad9614ecc 100644
--- a/Lib/test/test_getpath.py
+++ b/Lib/test/test_getpath.py
@@ -557,7 +557,7 @@ def test_framework_macos(self):
         ns.add_known_dir("/Library/Frameworks/Python.framework/Versions/9.8/lib/python9.8/lib-dynload")
         ns.add_known_file("/Library/Frameworks/Python.framework/Versions/9.8/lib/python9.8/os.py")
 
-        # This is definitely not the stdlib (see discusion in bpo-46890)
+        # This is definitely not the stdlib (see discussion in bpo-46890)
         #ns.add_known_file("/Library/Frameworks/lib/python98.zip")
 
         expected = dict(
@@ -605,7 +605,7 @@ def test_alt_framework_macos(self):
         ns.add_known_dir("/Library/Frameworks/DebugPython.framework/Versions/9.8/lib/python9.8/lib-dynload")
         ns.add_known_xfile("/Library/Frameworks/DebugPython.framework/Versions/9.8/lib/python9.8/os.py")
 
-        # This is definitely not the stdlib (see discusion in bpo-46890)
+        # This is definitely not the stdlib (see discussion in bpo-46890)
         #ns.add_known_xfile("/Library/lib/python98.zip")
         expected = dict(
             executable="/Library/Frameworks/DebugPython.framework/Versions/9.8/bin/python9.8",
@@ -844,6 +844,7 @@ def test_explicitly_set_stdlib_dir(self):
     PYDEBUGEXT="",
     VERSION_MAJOR=9,    # fixed version number for ease
     VERSION_MINOR=8,    # of testing
+    ABI_THREAD="",
     PYWINVER=None,
     EXE_SUFFIX=None,
 
diff --git a/Lib/test/test_glob.py b/Lib/test/test_glob.py
index b72640bd871ba6..b52c12f4b6cf14 100644
--- a/Lib/test/test_glob.py
+++ b/Lib/test/test_glob.py
@@ -510,6 +510,10 @@ def fn(pat):
 @skip_unless_symlink
 class SymlinkLoopGlobTests(unittest.TestCase):
 
+    # gh-109959: On Linux, glob._isdir() and glob._lexists() can return False
+    # randomly when checking the "link/" symbolic link.
+    # https://github.com/python/cpython/issues/109959#issuecomment-2577550700
+    @unittest.skip("flaky test")
     def test_selflink(self):
         tempdir = TESTFN + "_dir"
         os.makedirs(tempdir)
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
index cf801278da9e9b..ae384c3849d49e 100644
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -714,7 +714,6 @@ def test_compress_mtime(self):
                         self.assertEqual(f.mtime, mtime)
 
     def test_compress_correct_level(self):
-        # gzip.compress calls with mtime == 0 take a different code path.
         for mtime in (0, 42):
             with self.subTest(mtime=mtime):
                 nocompress = gzip.compress(data1, compresslevel=0, mtime=mtime)
@@ -722,6 +721,17 @@ def test_compress_correct_level(self):
                 self.assertIn(data1, nocompress)
                 self.assertNotIn(data1, yescompress)
 
+    def test_issue112346(self):
+        # The OS byte should be 255, this should not change between Python versions.
+        for mtime in (0, 42):
+            with self.subTest(mtime=mtime):
+                compress = gzip.compress(data1, compresslevel=1, mtime=mtime)
+                self.assertEqual(
+                    struct.unpack("<IxB", compress[4:10]),
+                    (mtime, 255),
+                    "Gzip header does not properly set either mtime or OS byte."
+                )
+
     def test_decompress(self):
         for data in (data1, data2):
             buf = io.BytesIO()
diff --git a/Lib/test/test_http_cookiejar.py b/Lib/test/test_http_cookiejar.py
index 97e9c82cde9ec4..dbf9ce10f76f91 100644
--- a/Lib/test/test_http_cookiejar.py
+++ b/Lib/test/test_http_cookiejar.py
@@ -9,7 +9,6 @@
 import time
 import unittest
 import urllib.request
-import pathlib
 
 from http.cookiejar import (time2isoz, http2time, iso2time, time2netscape,
      parse_ns_headers, join_header_words, split_header_words, Cookie,
@@ -337,9 +336,9 @@ def test_constructor_with_str(self):
         self.assertEqual(c.filename, filename)
 
     def test_constructor_with_path_like(self):
-        filename = pathlib.Path(os_helper.TESTFN)
-        c = LWPCookieJar(filename)
-        self.assertEqual(c.filename, os.fspath(filename))
+        filename = os_helper.TESTFN
+        c = LWPCookieJar(os_helper.FakePath(filename))
+        self.assertEqual(c.filename, filename)
 
     def test_constructor_with_none(self):
         c = LWPCookieJar(None)
diff --git a/Lib/test/test_http_cookies.py b/Lib/test/test_http_cookies.py
index 925c8697f60de6..7b3dc0fdaedc3b 100644
--- a/Lib/test/test_http_cookies.py
+++ b/Lib/test/test_http_cookies.py
@@ -5,6 +5,7 @@
 import doctest
 from http import cookies
 import pickle
+from test import support
 
 
 class CookieTests(unittest.TestCase):
@@ -58,6 +59,89 @@ def test_basic(self):
             for k, v in sorted(case['dict'].items()):
                 self.assertEqual(C[k].value, v)
 
+    def test_obsolete_rfc850_date_format(self):
+        # Test cases with different days and dates in obsolete RFC 850 format
+        test_cases = [
+            # from RFC 850, change EST to GMT
+            # https://datatracker.ietf.org/doc/html/rfc850#section-2
+            {
+                'data': 'key=value; expires=Saturday, 01-Jan-83 00:00:00 GMT',
+                'output': 'Saturday, 01-Jan-83 00:00:00 GMT'
+            },
+            {
+                'data': 'key=value; expires=Friday, 19-Nov-82 16:59:30 GMT',
+                'output': 'Friday, 19-Nov-82 16:59:30 GMT'
+            },
+            # from RFC 9110
+            # https://www.rfc-editor.org/rfc/rfc9110.html#section-5.6.7-6
+            {
+                'data': 'key=value; expires=Sunday, 06-Nov-94 08:49:37 GMT',
+                'output': 'Sunday, 06-Nov-94 08:49:37 GMT'
+            },
+            # other test cases
+            {
+                'data': 'key=value; expires=Wednesday, 09-Nov-94 08:49:37 GMT',
+                'output': 'Wednesday, 09-Nov-94 08:49:37 GMT'
+            },
+            {
+                'data': 'key=value; expires=Friday, 11-Nov-94 08:49:37 GMT',
+                'output': 'Friday, 11-Nov-94 08:49:37 GMT'
+            },
+            {
+                'data': 'key=value; expires=Monday, 14-Nov-94 08:49:37 GMT',
+                'output': 'Monday, 14-Nov-94 08:49:37 GMT'
+            },
+        ]
+
+        for case in test_cases:
+            with self.subTest(data=case['data']):
+                C = cookies.SimpleCookie()
+                C.load(case['data'])
+
+                # Extract the cookie name from the data string
+                cookie_name = case['data'].split('=')[0]
+
+                # Check if the cookie is loaded correctly
+                self.assertIn(cookie_name, C)
+                self.assertEqual(C[cookie_name].get('expires'), case['output'])
+
+    def test_unquote(self):
+        cases = [
+            (r'a="b=\""', 'b="'),
+            (r'a="b=\\"', 'b=\\'),
+            (r'a="b=\="', 'b=='),
+            (r'a="b=\n"', 'b=n'),
+            (r'a="b=\042"', 'b="'),
+            (r'a="b=\134"', 'b=\\'),
+            (r'a="b=\377"', 'b=\xff'),
+            (r'a="b=\400"', 'b=400'),
+            (r'a="b=\42"', 'b=42'),
+            (r'a="b=\\042"', 'b=\\042'),
+            (r'a="b=\\134"', 'b=\\134'),
+            (r'a="b=\\\""', 'b=\\"'),
+            (r'a="b=\\\042"', 'b=\\"'),
+            (r'a="b=\134\""', 'b=\\"'),
+            (r'a="b=\134\042"', 'b=\\"'),
+        ]
+        for encoded, decoded in cases:
+            with self.subTest(encoded):
+                C = cookies.SimpleCookie()
+                C.load(encoded)
+                self.assertEqual(C['a'].value, decoded)
+
+    @support.requires_resource('cpu')
+    def test_unquote_large(self):
+        n = 10**6
+        for encoded in r'\\', r'\134':
+            with self.subTest(encoded):
+                data = 'a="b=' + encoded*n + ';"'
+                C = cookies.SimpleCookie()
+                C.load(data)
+                value = C['a'].value
+                self.assertEqual(value[:3], 'b=\\')
+                self.assertEqual(value[-2:], '\\;')
+                self.assertEqual(len(value), n + 3)
+
     def test_load(self):
         C = cookies.SimpleCookie()
         C.load('Customer="WILE_E_COYOTE"; Version=1; Path=/acme')
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 9d853d254db7c6..0c4214addb9baa 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -1081,6 +1081,25 @@ def test_chunked(self):
         self.assertEqual(resp.read(), expected)
         resp.close()
 
+        # Explicit full read
+        for n in (-123, -1, None):
+            with self.subTest('full read', n=n):
+                sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+                resp = client.HTTPResponse(sock, method="GET")
+                resp.begin()
+                self.assertTrue(resp.chunked)
+                self.assertEqual(resp.read(n), expected)
+                resp.close()
+
+        # Read first chunk
+        with self.subTest('read1(-1)'):
+            sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+            resp = client.HTTPResponse(sock, method="GET")
+            resp.begin()
+            self.assertTrue(resp.chunked)
+            self.assertEqual(resp.read1(-1), b"hello worl")
+            resp.close()
+
         # Various read sizes
         for n in range(1, 12):
             sock = FakeSocket(chunked_start + last_chunk + chunked_end)
diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 79bf7dbdbb81a0..d462a2cda5047a 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -57,7 +57,7 @@ def timevalues(self):
                                        timezone(timedelta(0, 2 * 60 * 60))),
                 '"18-May-2033 05:33:20 +0200"']
 
-    @run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
+    @run_with_locale('LC_ALL', 'de_DE', 'fr_FR', '')
     # DST rules included to work around quirk where the Gnu C library may not
     # otherwise restore the previous time zone
     @run_with_tz('STD-1DST,M3.2.0,M11.1.0')
@@ -458,18 +458,14 @@ def test_simple_with_statement(self):
         with self.imap_class(*server.server_address):
             pass
 
-    @requires_resource('walltime')
     def test_imaplib_timeout_test(self):
-        _, server = self._setup(SimpleIMAPHandler)
-        addr = server.server_address[1]
-        client = self.imap_class("localhost", addr, timeout=None)
-        self.assertEqual(client.sock.timeout, None)
-        client.shutdown()
-        client = self.imap_class("localhost", addr, timeout=support.LOOPBACK_TIMEOUT)
-        self.assertEqual(client.sock.timeout, support.LOOPBACK_TIMEOUT)
-        client.shutdown()
+        _, server = self._setup(SimpleIMAPHandler, connect=False)
+        with self.imap_class(*server.server_address, timeout=None) as client:
+            self.assertEqual(client.sock.timeout, None)
+        with self.imap_class(*server.server_address, timeout=support.LOOPBACK_TIMEOUT) as client:
+            self.assertEqual(client.sock.timeout, support.LOOPBACK_TIMEOUT)
         with self.assertRaises(ValueError):
-            client = self.imap_class("localhost", addr, timeout=0)
+            self.imap_class(*server.server_address, timeout=0)
 
     def test_imaplib_timeout_functionality_test(self):
         class TimeoutHandler(SimpleIMAPHandler):
@@ -552,7 +548,6 @@ class NewIMAPSSLTests(NewIMAPTestsMixin, unittest.TestCase):
     imap_class = IMAP4_SSL
     server_class = SecureTCPServer
 
-    @requires_resource('walltime')
     def test_ssl_raises(self):
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         self.assertEqual(ssl_context.verify_mode, ssl.CERT_REQUIRED)
@@ -566,17 +561,16 @@ def test_ssl_raises(self):
             CERTIFICATE_VERIFY_FAILED                                       # AWS-LC
         )""", re.X)
         with self.assertRaisesRegex(ssl.CertificateError, regex):
-            _, server = self._setup(SimpleIMAPHandler)
+            _, server = self._setup(SimpleIMAPHandler, connect=False)
             client = self.imap_class(*server.server_address,
                                      ssl_context=ssl_context)
             client.shutdown()
 
-    @requires_resource('walltime')
     def test_ssl_verified(self):
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         ssl_context.load_verify_locations(CAFILE)
 
-        _, server = self._setup(SimpleIMAPHandler)
+        _, server = self._setup(SimpleIMAPHandler, connect=False)
         client = self.imap_class("localhost", server.server_address[1],
                                  ssl_context=ssl_context)
         client.shutdown()
@@ -907,6 +901,20 @@ def handle(self):
             self.assertRaises(imaplib.IMAP4.error,
                               self.imap_class, *server.server_address)
 
+    def test_truncated_large_literal(self):
+        size = 0
+        class BadHandler(SimpleIMAPHandler):
+            def handle(self):
+                self._send_textline('* OK {%d}' % size)
+                self._send_textline('IMAP4rev1')
+
+        for exponent in range(15, 64):
+            size = 1 << exponent
+            with self.subTest(f"size=2e{size}"):
+                with self.reaped_server(BadHandler) as server:
+                    with self.assertRaises(imaplib.IMAP4.abort):
+                        self.imap_class(*server.server_address)
+
     @threading_helper.reap_threads
     def test_simple_with_statement(self):
         # simplest call
diff --git a/Lib/test/test_import/__init__.py b/Lib/test/test_import/__init__.py
index 64282d0f2d0bcf..d9246c0ea70a04 100644
--- a/Lib/test/test_import/__init__.py
+++ b/Lib/test/test_import/__init__.py
@@ -29,9 +29,20 @@
 
 from test.support import os_helper
 from test.support import (
-    STDLIB_DIR, swap_attr, swap_item, cpython_only, is_apple_mobile, is_emscripten,
-    is_wasi, run_in_subinterp, run_in_subinterp_with_config, Py_TRACE_REFS,
-    requires_gil_enabled, Py_GIL_DISABLED)
+    STDLIB_DIR,
+    swap_attr,
+    swap_item,
+    cpython_only,
+    is_apple_mobile,
+    is_emscripten,
+    is_wasi,
+    run_in_subinterp,
+    run_in_subinterp_with_config,
+    Py_TRACE_REFS,
+    requires_gil_enabled,
+    Py_GIL_DISABLED,
+    force_not_colorized_test_class,
+)
 from test.support.import_helper import (
     forget, make_legacy_pyc, unlink, unload, ready_to_import,
     DirsOnSysPath, CleanImport, import_module)
@@ -111,6 +122,24 @@ def require_frozen(module, *, skip=True):
 def require_pure_python(module, *, skip=False):
     _require_loader(module, SourceFileLoader, skip)
 
+def create_extension_loader(modname, filename):
+    # Apple extensions must be distributed as frameworks. This requires
+    # a specialist loader.
+    if is_apple_mobile:
+        return AppleFrameworkLoader(modname, filename)
+    else:
+        return ExtensionFileLoader(modname, filename)
+
+def import_extension_from_file(modname, filename, *, put_in_sys_modules=True):
+    loader = create_extension_loader(modname, filename)
+    spec = importlib.util.spec_from_loader(modname, loader)
+    module = importlib.util.module_from_spec(spec)
+    loader.exec_module(module)
+    if put_in_sys_modules:
+        sys.modules[modname] = module
+    return module
+
+
 def remove_files(name):
     for f in (name + ".py",
               name + ".pyc",
@@ -334,6 +363,7 @@ def _from_subinterp(cls, name, interpid, pipe, script_kwargs):
         return cls.parse(text.decode())
 
 
+@force_not_colorized_test_class
 class ImportTests(unittest.TestCase):
 
     def setUp(self):
@@ -371,10 +401,14 @@ def test_from_import_missing_attr_has_name_and_so_path(self):
             from _testcapi import i_dont_exist
         self.assertEqual(cm.exception.name, '_testcapi')
         if hasattr(_testcapi, "__file__"):
-            self.assertEqual(cm.exception.path, _testcapi.__file__)
+            # The path on the exception is strictly the spec origin, not the
+            # module's __file__. For most cases, these are the same; but on
+            # iOS, the Framework relocation process results in the exception
+            # being raised from the spec location.
+            self.assertEqual(cm.exception.path, _testcapi.__spec__.origin)
             self.assertRegex(
                 str(cm.exception),
-                r"cannot import name 'i_dont_exist' from '_testcapi' \(.*\.(so|fwork|pyd)\)"
+                r"cannot import name 'i_dont_exist' from '_testcapi' \(.*(\.(so|pyd))?\)"
             )
         else:
             self.assertEqual(
@@ -804,105 +838,201 @@ def test_issue105979(self):
         self.assertIn("Frozen object named 'x' is invalid",
                       str(cm.exception))
 
-    def test_script_shadowing_stdlib(self):
-        with os_helper.temp_dir() as tmp:
-            with open(os.path.join(tmp, "fractions.py"), "w", encoding='utf-8') as f:
-                f.write("import fractions\nfractions.Fraction")
+    def test_frozen_module_from_import_error(self):
+        with self.assertRaises(ImportError) as cm:
+            from os import this_will_never_exist
+        self.assertIn(
+            f"cannot import name 'this_will_never_exist' from 'os' ({os.__file__})",
+            str(cm.exception),
+        )
+        with self.assertRaises(ImportError) as cm:
+            from sys import this_will_never_exist
+        self.assertIn(
+            "cannot import name 'this_will_never_exist' from 'sys' (unknown location)",
+            str(cm.exception),
+        )
 
-            expected_error = (
-                rb"AttributeError: module 'fractions' has no attribute 'Fraction' "
-                rb"\(consider renaming '.*fractions.py' since it has the "
-                rb"same name as the standard library module named 'fractions' "
-                rb"and the import system gives it precedence\)"
-            )
+        scripts = [
+            """
+import os
+os.__spec__.has_location = False
+os.__file__ = []
+from os import this_will_never_exist
+""",
+            """
+import os
+os.__spec__.has_location = False
+del os.__file__
+from os import this_will_never_exist
+""",
+              """
+import os
+os.__spec__.origin = []
+os.__file__ = []
+from os import this_will_never_exist
+"""
+        ]
+        for script in scripts:
+            with self.subTest(script=script):
+                expected_error = (
+                    b"cannot import name 'this_will_never_exist' "
+                    b"from 'os' (unknown location)"
+                )
+                popen = script_helper.spawn_python("-c", script)
+                stdout, stderr = popen.communicate()
+                self.assertIn(expected_error, stdout)
 
-            popen = script_helper.spawn_python(os.path.join(tmp, "fractions.py"), cwd=tmp)
+    def test_non_module_from_import_error(self):
+        prefix = """
+import sys
+class NotAModule: ...
+nm = NotAModule()
+nm.symbol = 123
+sys.modules["not_a_module"] = nm
+from not_a_module import symbol
+"""
+        scripts = [
+            prefix + "from not_a_module import missing_symbol",
+            prefix + "nm.__spec__ = []\nfrom not_a_module import missing_symbol",
+        ]
+        for script in scripts:
+            with self.subTest(script=script):
+                expected_error = (
+                    b"ImportError: cannot import name 'missing_symbol' from "
+                    b"'<unknown module name>' (unknown location)"
+                )
+            popen = script_helper.spawn_python("-c", script)
             stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+            self.assertIn(expected_error, stdout)
 
-            popen = script_helper.spawn_python('-m', 'fractions', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+    def test_script_shadowing_stdlib(self):
+        script_errors = [
+            (
+                "import fractions\nfractions.Fraction",
+                rb"AttributeError: module 'fractions' has no attribute 'Fraction'"
+            ),
+            (
+                "from fractions import Fraction",
+                rb"ImportError: cannot import name 'Fraction' from 'fractions'"
+            )
+        ]
+        for script, error in script_errors:
+            with self.subTest(script=script), os_helper.temp_dir() as tmp:
+                with open(os.path.join(tmp, "fractions.py"), "w", encoding='utf-8') as f:
+                    f.write(script)
+
+                expected_error = error + (
+                    rb" \(consider renaming '.*fractions.py' since it has the "
+                    rb"same name as the standard library module named 'fractions' "
+                    rb"and prevents importing that standard library module\)"
+                )
 
-            popen = script_helper.spawn_python('-c', 'import fractions', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python(os.path.join(tmp, "fractions.py"), cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            # and there's no error at all when using -P
-            popen = script_helper.spawn_python('-P', 'fractions.py', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertEqual(stdout, b'')
+                popen = script_helper.spawn_python('-m', 'fractions', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            tmp_child = os.path.join(tmp, "child")
-            os.mkdir(tmp_child)
+                popen = script_helper.spawn_python('-c', 'import fractions', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            # test the logic with different cwd
-            popen = script_helper.spawn_python(os.path.join(tmp, "fractions.py"), cwd=tmp_child)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                # and there's no error at all when using -P
+                popen = script_helper.spawn_python('-P', 'fractions.py', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertEqual(stdout, b'')
 
-            popen = script_helper.spawn_python('-m', 'fractions', cwd=tmp_child)
-            stdout, stderr = popen.communicate()
-            self.assertEqual(stdout, b'')  # no error
+                tmp_child = os.path.join(tmp, "child")
+                os.mkdir(tmp_child)
 
-            popen = script_helper.spawn_python('-c', 'import fractions', cwd=tmp_child)
-            stdout, stderr = popen.communicate()
-            self.assertEqual(stdout, b'')  # no error
+                # test the logic with different cwd
+                popen = script_helper.spawn_python(os.path.join(tmp, "fractions.py"), cwd=tmp_child)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-    def test_package_shadowing_stdlib_module(self):
-        with os_helper.temp_dir() as tmp:
-            os.mkdir(os.path.join(tmp, "fractions"))
-            with open(os.path.join(tmp, "fractions", "__init__.py"), "w", encoding='utf-8') as f:
-                f.write("shadowing_module = True")
-            with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
-                f.write("""
-import fractions
-fractions.shadowing_module
-fractions.Fraction
-""")
+                popen = script_helper.spawn_python('-m', 'fractions', cwd=tmp_child)
+                stdout, stderr = popen.communicate()
+                self.assertEqual(stdout, b'')  # no error
 
-            expected_error = (
-                rb"AttributeError: module 'fractions' has no attribute 'Fraction' "
-                rb"\(consider renaming '.*fractions.__init__.py' since it has the "
-                rb"same name as the standard library module named 'fractions' "
-                rb"and the import system gives it precedence\)"
+                popen = script_helper.spawn_python('-c', 'import fractions', cwd=tmp_child)
+                stdout, stderr = popen.communicate()
+                self.assertEqual(stdout, b'')  # no error
+
+    def test_package_shadowing_stdlib_module(self):
+        script_errors = [
+            (
+                "fractions.Fraction",
+                rb"AttributeError: module 'fractions' has no attribute 'Fraction'"
+            ),
+            (
+                "from fractions import Fraction",
+                rb"ImportError: cannot import name 'Fraction' from 'fractions'"
             )
+        ]
+        for script, error in script_errors:
+            with self.subTest(script=script), os_helper.temp_dir() as tmp:
+                os.mkdir(os.path.join(tmp, "fractions"))
+                with open(
+                    os.path.join(tmp, "fractions", "__init__.py"), "w", encoding='utf-8'
+                ) as f:
+                    f.write("shadowing_module = True")
+                with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
+                    f.write("import fractions; fractions.shadowing_module\n")
+                    f.write(script)
+
+                expected_error = error + (
+                    rb" \(consider renaming '.*[\\/]fractions[\\/]+__init__.py' since it has the "
+                    rb"same name as the standard library module named 'fractions' "
+                    rb"and prevents importing that standard library module\)"
+                )
 
-            popen = script_helper.spawn_python(os.path.join(tmp, "main.py"), cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python(os.path.join(tmp, "main.py"), cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            popen = script_helper.spawn_python('-m', 'main', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python('-m', 'main', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            # and there's no shadowing at all when using -P
-            popen = script_helper.spawn_python('-P', 'main.py', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, b"module 'fractions' has no attribute 'shadowing_module'")
+                # and there's no shadowing at all when using -P
+                popen = script_helper.spawn_python('-P', 'main.py', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, b"module 'fractions' has no attribute 'shadowing_module'")
 
     def test_script_shadowing_third_party(self):
-        with os_helper.temp_dir() as tmp:
-            with open(os.path.join(tmp, "numpy.py"), "w", encoding='utf-8') as f:
-                f.write("import numpy\nnumpy.array")
-
-            expected_error = (
-                rb"AttributeError: module 'numpy' has no attribute 'array' "
-                rb"\(consider renaming '.*numpy.py' if it has the "
-                rb"same name as a third-party module you intended to import\)\s+\Z"
+        script_errors = [
+            (
+                "import numpy\nnumpy.array",
+                rb"AttributeError: module 'numpy' has no attribute 'array'"
+            ),
+            (
+                "from numpy import array",
+                rb"ImportError: cannot import name 'array' from 'numpy'"
             )
+        ]
+        for script, error in script_errors:
+            with self.subTest(script=script), os_helper.temp_dir() as tmp:
+                with open(os.path.join(tmp, "numpy.py"), "w", encoding='utf-8') as f:
+                    f.write(script)
+
+                expected_error = error + (
+                    rb" \(consider renaming '.*numpy.py' if it has the "
+                    rb"same name as a library you intended to import\)\s+\Z"
+                )
 
-            popen = script_helper.spawn_python(os.path.join(tmp, "numpy.py"))
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python(os.path.join(tmp, "numpy.py"))
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            popen = script_helper.spawn_python('-m', 'numpy', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python('-m', 'numpy', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
-            popen = script_helper.spawn_python('-c', 'import numpy', cwd=tmp)
-            stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+                popen = script_helper.spawn_python('-c', 'import numpy', cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
 
     def test_script_maybe_not_shadowing_third_party(self):
         with os_helper.temp_dir() as tmp:
@@ -912,15 +1042,23 @@ def test_script_maybe_not_shadowing_third_party(self):
             expected_error = (
                 rb"AttributeError: module 'numpy' has no attribute 'attr'\s+\Z"
             )
-
             popen = script_helper.spawn_python('-c', 'import numpy; numpy.attr', cwd=tmp)
             stdout, stderr = popen.communicate()
             self.assertRegex(stdout, expected_error)
 
+            expected_error = (
+                rb"ImportError: cannot import name 'attr' from 'numpy' \(.*\)\s+\Z"
+            )
+            popen = script_helper.spawn_python('-c', 'from numpy import attr', cwd=tmp)
+            stdout, stderr = popen.communicate()
+            self.assertRegex(stdout, expected_error)
+
     def test_script_shadowing_stdlib_edge_cases(self):
         with os_helper.temp_dir() as tmp:
             with open(os.path.join(tmp, "fractions.py"), "w", encoding='utf-8') as f:
                 f.write("shadowing_module = True")
+
+            # Unhashable str subclass
             with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
                 f.write("""
 import fractions
@@ -933,11 +1071,28 @@ class substr(str):
 except TypeError as e:
     print(str(e))
 """)
+            popen = script_helper.spawn_python("main.py", cwd=tmp)
+            stdout, stderr = popen.communicate()
+            self.assertEqual(stdout.rstrip(), b"unhashable type: 'substr'")
+
+            with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
+                f.write("""
+import fractions
+fractions.shadowing_module
+class substr(str):
+    __hash__ = None
+fractions.__name__ = substr('fractions')
+try:
+    from fractions import Fraction
+except TypeError as e:
+    print(str(e))
+""")
 
             popen = script_helper.spawn_python("main.py", cwd=tmp)
             stdout, stderr = popen.communicate()
             self.assertEqual(stdout.rstrip(), b"unhashable type: 'substr'")
 
+            # Various issues with sys module
             with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
                 f.write("""
 import fractions
@@ -962,18 +1117,45 @@ class substr(str):
 except AttributeError as e:
     print(str(e))
 """)
+            popen = script_helper.spawn_python("main.py", cwd=tmp)
+            stdout, stderr = popen.communicate()
+            lines = stdout.splitlines()
+            self.assertEqual(len(lines), 3)
+            for line in lines:
+                self.assertEqual(line, b"module 'fractions' has no attribute 'Fraction'")
+
+            with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
+                f.write("""
+import fractions
+fractions.shadowing_module
+
+import sys
+sys.stdlib_module_names = None
+try:
+    from fractions import Fraction
+except ImportError as e:
+    print(str(e))
 
+del sys.stdlib_module_names
+try:
+    from fractions import Fraction
+except ImportError as e:
+    print(str(e))
+
+sys.path = [0]
+try:
+    from fractions import Fraction
+except ImportError as e:
+    print(str(e))
+""")
             popen = script_helper.spawn_python("main.py", cwd=tmp)
             stdout, stderr = popen.communicate()
-            self.assertEqual(
-                stdout.splitlines(),
-                [
-                    b"module 'fractions' has no attribute 'Fraction'",
-                    b"module 'fractions' has no attribute 'Fraction'",
-                    b"module 'fractions' has no attribute 'Fraction'",
-                ],
-            )
+            lines = stdout.splitlines()
+            self.assertEqual(len(lines), 3)
+            for line in lines:
+                self.assertRegex(line, rb"cannot import name 'Fraction' from 'fractions' \(.*\)")
 
+            # Various issues with origin
             with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
                 f.write("""
 import fractions
@@ -984,7 +1166,7 @@ class substr(str):
 except AttributeError as e:
     print(str(e))
 
-fractions.__spec__.origin = 0
+fractions.__spec__.origin = []
 try:
     fractions.Fraction
 except AttributeError as e:
@@ -993,37 +1175,74 @@ class substr(str):
 
             popen = script_helper.spawn_python("main.py", cwd=tmp)
             stdout, stderr = popen.communicate()
-            self.assertEqual(
-                stdout.splitlines(),
-                [
-                    b"module 'fractions' has no attribute 'Fraction'",
-                    b"module 'fractions' has no attribute 'Fraction'"
-                ],
-            )
-
-    def test_script_shadowing_stdlib_sys_path_modification(self):
-        with os_helper.temp_dir() as tmp:
-            with open(os.path.join(tmp, "fractions.py"), "w", encoding='utf-8') as f:
-                f.write("shadowing_module = True")
-
-            expected_error = (
-                rb"AttributeError: module 'fractions' has no attribute 'Fraction' "
-                rb"\(consider renaming '.*fractions.py' since it has the "
-                rb"same name as the standard library module named 'fractions' "
-                rb"and the import system gives it precedence\)"
-            )
+            lines = stdout.splitlines()
+            self.assertEqual(len(lines), 2)
+            for line in lines:
+                self.assertEqual(line, b"module 'fractions' has no attribute 'Fraction'")
 
             with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
                 f.write("""
-import sys
-sys.path.insert(0, "this_folder_does_not_exist")
 import fractions
-fractions.Fraction
-""")
+fractions.shadowing_module
+del fractions.__spec__.origin
+try:
+    from fractions import Fraction
+except ImportError as e:
+    print(str(e))
 
+fractions.__spec__.origin = []
+try:
+    from fractions import Fraction
+except ImportError as e:
+    print(str(e))
+""")
             popen = script_helper.spawn_python("main.py", cwd=tmp)
             stdout, stderr = popen.communicate()
-            self.assertRegex(stdout, expected_error)
+            lines = stdout.splitlines()
+            self.assertEqual(len(lines), 2)
+            for line in lines:
+                self.assertRegex(line, rb"cannot import name 'Fraction' from 'fractions' \(.*\)")
+
+    def test_script_shadowing_stdlib_sys_path_modification(self):
+        script_errors = [
+            (
+                "import fractions\nfractions.Fraction",
+                rb"AttributeError: module 'fractions' has no attribute 'Fraction'"
+            ),
+            (
+                "from fractions import Fraction",
+                rb"ImportError: cannot import name 'Fraction' from 'fractions'"
+            )
+        ]
+        for script, error in script_errors:
+            with self.subTest(script=script), os_helper.temp_dir() as tmp:
+                with open(os.path.join(tmp, "fractions.py"), "w", encoding='utf-8') as f:
+                    f.write("shadowing_module = True")
+                with open(os.path.join(tmp, "main.py"), "w", encoding='utf-8') as f:
+                    f.write('import sys; sys.path.insert(0, "this_folder_does_not_exist")\n')
+                    f.write(script)
+                expected_error = error + (
+                    rb" \(consider renaming '.*fractions.py' since it has the "
+                    rb"same name as the standard library module named 'fractions' "
+                    rb"and prevents importing that standard library module\)"
+                )
+
+                popen = script_helper.spawn_python("main.py", cwd=tmp)
+                stdout, stderr = popen.communicate()
+                self.assertRegex(stdout, expected_error)
+
+    def test_create_dynamic_null(self):
+        with self.assertRaisesRegex(ValueError, 'embedded null character'):
+            class Spec:
+                name = "a\x00b"
+                origin = "abc"
+            _imp.create_dynamic(Spec())
+
+        with self.assertRaisesRegex(ValueError, 'embedded null character'):
+            class Spec2:
+                name = "abc"
+                origin = "a\x00b"
+            _imp.create_dynamic(Spec2())
 
 
 @skip_if_dont_write_bytecode
@@ -1913,6 +2132,37 @@ def test_absolute_circular_submodule(self):
             str(cm.exception),
         )
 
+    @requires_singlephase_init
+    @unittest.skipIf(_testsinglephase is None, "test requires _testsinglephase module")
+    def test_singlephase_circular(self):
+        """Regression test for gh-123950
+
+        Import a single-phase-init module that imports itself
+        from the PyInit_* function (before it's added to sys.modules).
+        Manages its own cache (which is `static`, and so incompatible
+        with multiple interpreters or interpreter reset).
+        """
+        name = '_testsinglephase_circular'
+        helper_name = 'test.test_import.data.circular_imports.singlephase'
+        with uncache(name, helper_name):
+            filename = _testsinglephase.__file__
+            # We don't put the module in sys.modules: that the *inner*
+            # import should do that.
+            mod = import_extension_from_file(name, filename,
+                                             put_in_sys_modules=False)
+
+            self.assertEqual(mod.helper_mod_name, helper_name)
+            self.assertIn(name, sys.modules)
+            self.assertIn(helper_name, sys.modules)
+
+            self.assertIn(name, sys.modules)
+            self.assertIn(helper_name, sys.modules)
+        self.assertNotIn(name, sys.modules)
+        self.assertNotIn(helper_name, sys.modules)
+        self.assertIs(mod.clear_static_var(), mod)
+        _testinternalcapi.clear_extension('_testsinglephase_circular',
+                                          mod.__spec__.origin)
+
     def test_unwritable_module(self):
         self.addCleanup(unload, "test.test_import.data.unwritable")
         self.addCleanup(unload, "test.test_import.data.unwritable.x")
@@ -1952,14 +2202,6 @@ def pipe(self):
             os.set_blocking(r, False)
         return (r, w)
 
-    def create_extension_loader(self, modname, filename):
-        # Apple extensions must be distributed as frameworks. This requires
-        # a specialist loader.
-        if is_apple_mobile:
-            return AppleFrameworkLoader(modname, filename)
-        else:
-            return ExtensionFileLoader(modname, filename)
-
     def import_script(self, name, fd, filename=None, check_override=None):
         override_text = ''
         if check_override is not None:
@@ -2157,6 +2399,8 @@ def test_single_init_extension_compat(self):
             self.check_incompatible_here(module)
         with self.subTest(f'{module}: strict, fresh'):
             self.check_incompatible_fresh(module)
+        with self.subTest(f'{module}: isolated, fresh'):
+            self.check_incompatible_fresh(module, isolated=True)
 
     @unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
     def test_multi_init_extension_compat(self):
@@ -2174,11 +2418,7 @@ def test_multi_init_extension_compat(self):
     def test_multi_init_extension_non_isolated_compat(self):
         modname = '_test_non_isolated'
         filename = _testmultiphase.__file__
-        loader = self.create_extension_loader(modname, filename)
-        spec = importlib.util.spec_from_loader(modname, loader)
-        module = importlib.util.module_from_spec(spec)
-        loader.exec_module(module)
-        sys.modules[modname] = module
+        module = import_extension_from_file(modname, filename)
 
         require_extension(module)
         with self.subTest(f'{modname}: isolated'):
@@ -2193,11 +2433,7 @@ def test_multi_init_extension_non_isolated_compat(self):
     def test_multi_init_extension_per_interpreter_gil_compat(self):
         modname = '_test_shared_gil_only'
         filename = _testmultiphase.__file__
-        loader = self.create_extension_loader(modname, filename)
-        spec = importlib.util.spec_from_loader(modname, loader)
-        module = importlib.util.module_from_spec(spec)
-        loader.exec_module(module)
-        sys.modules[modname] = module
+        module = import_extension_from_file(modname, filename)
 
         require_extension(module)
         with self.subTest(f'{modname}: isolated, strict'):
@@ -2887,6 +3123,16 @@ def test_with_reinit_reloaded(self):
 
                 self.assertIs(reloaded.snapshot.cached, reloaded.module)
 
+    @unittest.skipIf(_testinternalcapi is None, "requires _testinternalcapi")
+    def test_check_state_first(self):
+        for variant in ['', '_with_reinit', '_with_state']:
+            name = f'{self.NAME}{variant}_check_cache_first'
+            with self.subTest(name):
+                mod = self._load_dynamic(name, self.ORIGIN)
+                self.assertEqual(mod.__name__, name)
+                sys.modules.pop(name, None)
+                _testinternalcapi.clear_extension(name, self.ORIGIN)
+
     # Currently, for every single-phrase init module loaded
     # in multiple interpreters, those interpreters share a
     # PyModuleDef for that object, which can be a problem.
@@ -3096,30 +3342,6 @@ def test_basic_multiple_interpreters_reset_each(self):
         #  * module's global state was initialized, not reset
 
 
-@cpython_only
-class CAPITests(unittest.TestCase):
-    def test_pyimport_addmodule(self):
-        # gh-105922: Test PyImport_AddModuleRef(), PyImport_AddModule()
-        # and PyImport_AddModuleObject()
-        _testcapi = import_module("_testcapi")
-        for name in (
-            'sys',     # frozen module
-            'test',    # package
-            __name__,  # package.module
-        ):
-            _testcapi.check_pyimport_addmodule(name)
-
-    def test_pyimport_addmodule_create(self):
-        # gh-105922: Test PyImport_AddModuleRef(), create a new module
-        _testcapi = import_module("_testcapi")
-        name = 'dontexist'
-        self.assertNotIn(name, sys.modules)
-        self.addCleanup(unload, name)
-
-        mod = _testcapi.check_pyimport_addmodule(name)
-        self.assertIs(mod, sys.modules[name])
-
-
 if __name__ == '__main__':
     # Test needs to be a package, so we can do relative imports.
     unittest.main()
diff --git a/Lib/test/test_import/data/circular_imports/singlephase.py b/Lib/test/test_import/data/circular_imports/singlephase.py
new file mode 100644
index 00000000000000..05618bc72f9327
--- /dev/null
+++ b/Lib/test/test_import/data/circular_imports/singlephase.py
@@ -0,0 +1,13 @@
+"""Circular import involving a single-phase-init extension.
+
+This module is imported from the _testsinglephase_circular module from
+_testsinglephase, and imports that module again.
+"""
+
+import importlib
+import _testsinglephase
+from test.test_import import import_extension_from_file
+
+name = '_testsinglephase_circular'
+filename = _testsinglephase.__file__
+mod = import_extension_from_file(name, filename)
diff --git a/Lib/test/test_importlib/metadata/fixtures.py b/Lib/test/test_importlib/metadata/fixtures.py
index 7ff94c9afe88e1..2db6c40ffc273d 100644
--- a/Lib/test/test_importlib/metadata/fixtures.py
+++ b/Lib/test/test_importlib/metadata/fixtures.py
@@ -253,6 +253,40 @@ def main():
     }
 
 
+class EggInfoPkgPipInstalledExternalDataFiles(OnSysPath, SiteBuilder):
+    files: FilesSpec = {
+        "egg_with_module_pkg.egg-info": {
+            "PKG-INFO": "Name: egg_with_module-pkg",
+            # SOURCES.txt is made from the source archive, and contains files
+            # (setup.py) that are not present after installation.
+            "SOURCES.txt": """
+                egg_with_module.py
+                setup.py
+                egg_with_module.json
+                egg_with_module_pkg.egg-info/PKG-INFO
+                egg_with_module_pkg.egg-info/SOURCES.txt
+                egg_with_module_pkg.egg-info/top_level.txt
+            """,
+            # installed-files.txt is written by pip, and is a strictly more
+            # accurate source than SOURCES.txt as to the installed contents of
+            # the package.
+            "installed-files.txt": """
+                ../../../etc/jupyter/jupyter_notebook_config.d/relative.json
+                /etc/jupyter/jupyter_notebook_config.d/absolute.json
+                ../egg_with_module.py
+                PKG-INFO
+                SOURCES.txt
+                top_level.txt
+            """,
+            # missing top_level.txt (to trigger fallback to installed-files.txt)
+        },
+        "egg_with_module.py": """
+            def main():
+                print("hello world")
+            """,
+    }
+
+
 class EggInfoPkgPipInstalledNoModules(OnSysPath, SiteBuilder):
     files: FilesSpec = {
         "egg_with_no_modules_pkg.egg-info": {
diff --git a/Lib/test/test_importlib/metadata/test_api.py b/Lib/test/test_importlib/metadata/test_api.py
index 33c6e85ee94753..29b261baba4ccc 100644
--- a/Lib/test/test_importlib/metadata/test_api.py
+++ b/Lib/test/test_importlib/metadata/test_api.py
@@ -29,6 +29,7 @@ class APITests(
     fixtures.EggInfoPkg,
     fixtures.EggInfoPkgPipInstalledNoToplevel,
     fixtures.EggInfoPkgPipInstalledNoModules,
+    fixtures.EggInfoPkgPipInstalledExternalDataFiles,
     fixtures.EggInfoPkgSourcesFallback,
     fixtures.DistInfoPkg,
     fixtures.DistInfoPkgWithDot,
diff --git a/Lib/test/test_importlib/resources/_path.py b/Lib/test/test_importlib/resources/_path.py
index 1f97c96146960d..b144628cb73c77 100644
--- a/Lib/test/test_importlib/resources/_path.py
+++ b/Lib/test/test_importlib/resources/_path.py
@@ -2,15 +2,44 @@
 import functools
 
 from typing import Dict, Union
+from typing import runtime_checkable
+from typing import Protocol
 
 
 ####
-# from jaraco.path 3.4.1
+# from jaraco.path 3.7.1
 
-FilesSpec = Dict[str, Union[str, bytes, 'FilesSpec']]  # type: ignore
 
+class Symlink(str):
+    """
+    A string indicating the target of a symlink.
+    """
+
+
+FilesSpec = Dict[str, Union[str, bytes, Symlink, 'FilesSpec']]
+
+
+@runtime_checkable
+class TreeMaker(Protocol):
+    def __truediv__(self, *args, **kwargs): ...  # pragma: no cover
+
+    def mkdir(self, **kwargs): ...  # pragma: no cover
+
+    def write_text(self, content, **kwargs): ...  # pragma: no cover
+
+    def write_bytes(self, content): ...  # pragma: no cover
 
-def build(spec: FilesSpec, prefix=pathlib.Path()):
+    def symlink_to(self, target): ...  # pragma: no cover
+
+
+def _ensure_tree_maker(obj: Union[str, TreeMaker]) -> TreeMaker:
+    return obj if isinstance(obj, TreeMaker) else pathlib.Path(obj)  # type: ignore[return-value]
+
+
+def build(
+    spec: FilesSpec,
+    prefix: Union[str, TreeMaker] = pathlib.Path(),  # type: ignore[assignment]
+):
     """
     Build a set of files/directories, as described by the spec.
 
@@ -25,21 +54,25 @@ def build(spec: FilesSpec, prefix=pathlib.Path()):
     ...             "__init__.py": "",
     ...         },
     ...         "baz.py": "# Some code",
-    ...     }
+    ...         "bar.py": Symlink("baz.py"),
+    ...     },
+    ...     "bing": Symlink("foo"),
     ... }
     >>> target = getfixture('tmp_path')
     >>> build(spec, target)
     >>> target.joinpath('foo/baz.py').read_text(encoding='utf-8')
     '# Some code'
+    >>> target.joinpath('bing/bar.py').read_text(encoding='utf-8')
+    '# Some code'
     """
     for name, contents in spec.items():
-        create(contents, pathlib.Path(prefix) / name)
+        create(contents, _ensure_tree_maker(prefix) / name)
 
 
 @functools.singledispatch
 def create(content: Union[str, bytes, FilesSpec], path):
     path.mkdir(exist_ok=True)
-    build(content, prefix=path)  # type: ignore
+    build(content, prefix=path)  # type: ignore[arg-type]
 
 
 @create.register
@@ -52,5 +85,10 @@ def _(content: str, path):
     path.write_text(content, encoding='utf-8')
 
 
+@create.register
+def _(content: Symlink, path):
+    path.symlink_to(content)
+
+
 # end from jaraco.path
 ####
diff --git a/Lib/test/test_importlib/resources/data01/__init__.py b/Lib/test/test_importlib/resources/data01/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data01/binary.file b/Lib/test/test_importlib/resources/data01/binary.file
deleted file mode 100644
index eaf36c1daccfdf..00000000000000
Binary files a/Lib/test/test_importlib/resources/data01/binary.file and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/data01/subdirectory/__init__.py b/Lib/test/test_importlib/resources/data01/subdirectory/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data01/subdirectory/binary.file b/Lib/test/test_importlib/resources/data01/subdirectory/binary.file
deleted file mode 100644
index eaf36c1daccfdf..00000000000000
Binary files a/Lib/test/test_importlib/resources/data01/subdirectory/binary.file and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/data01/utf-16.file b/Lib/test/test_importlib/resources/data01/utf-16.file
deleted file mode 100644
index 2cb772295ef4b4..00000000000000
Binary files a/Lib/test/test_importlib/resources/data01/utf-16.file and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/data01/utf-8.file b/Lib/test/test_importlib/resources/data01/utf-8.file
deleted file mode 100644
index 1c0132ad90a192..00000000000000
--- a/Lib/test/test_importlib/resources/data01/utf-8.file
+++ /dev/null
@@ -1 +0,0 @@
-Hello, UTF-8 world!
diff --git a/Lib/test/test_importlib/resources/data02/__init__.py b/Lib/test/test_importlib/resources/data02/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data02/one/__init__.py b/Lib/test/test_importlib/resources/data02/one/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data02/one/resource1.txt b/Lib/test/test_importlib/resources/data02/one/resource1.txt
deleted file mode 100644
index 61a813e40174a6..00000000000000
--- a/Lib/test/test_importlib/resources/data02/one/resource1.txt
+++ /dev/null
@@ -1 +0,0 @@
-one resource
diff --git a/Lib/test/test_importlib/resources/data02/subdirectory/subsubdir/resource.txt b/Lib/test/test_importlib/resources/data02/subdirectory/subsubdir/resource.txt
deleted file mode 100644
index 48f587a2d0ac53..00000000000000
--- a/Lib/test/test_importlib/resources/data02/subdirectory/subsubdir/resource.txt
+++ /dev/null
@@ -1 +0,0 @@
-a resource
\ No newline at end of file
diff --git a/Lib/test/test_importlib/resources/data02/two/__init__.py b/Lib/test/test_importlib/resources/data02/two/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data02/two/resource2.txt b/Lib/test/test_importlib/resources/data02/two/resource2.txt
deleted file mode 100644
index a80ce46ea362e2..00000000000000
--- a/Lib/test/test_importlib/resources/data02/two/resource2.txt
+++ /dev/null
@@ -1 +0,0 @@
-two resource
diff --git a/Lib/test/test_importlib/resources/data03/__init__.py b/Lib/test/test_importlib/resources/data03/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data03/namespace/portion1/__init__.py b/Lib/test/test_importlib/resources/data03/namespace/portion1/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data03/namespace/portion2/__init__.py b/Lib/test/test_importlib/resources/data03/namespace/portion2/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/data03/namespace/resource1.txt b/Lib/test/test_importlib/resources/data03/namespace/resource1.txt
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/namespacedata01/binary.file b/Lib/test/test_importlib/resources/namespacedata01/binary.file
deleted file mode 100644
index eaf36c1daccfdf..00000000000000
Binary files a/Lib/test/test_importlib/resources/namespacedata01/binary.file and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/namespacedata01/utf-16.file b/Lib/test/test_importlib/resources/namespacedata01/utf-16.file
deleted file mode 100644
index 2cb772295ef4b4..00000000000000
Binary files a/Lib/test/test_importlib/resources/namespacedata01/utf-16.file and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/namespacedata01/utf-8.file b/Lib/test/test_importlib/resources/namespacedata01/utf-8.file
deleted file mode 100644
index 1c0132ad90a192..00000000000000
--- a/Lib/test/test_importlib/resources/namespacedata01/utf-8.file
+++ /dev/null
@@ -1 +0,0 @@
-Hello, UTF-8 world!
diff --git a/Lib/test/test_importlib/resources/test_contents.py b/Lib/test/test_importlib/resources/test_contents.py
index 1a13f043a86f03..4e4e0e9c337f23 100644
--- a/Lib/test/test_importlib/resources/test_contents.py
+++ b/Lib/test/test_importlib/resources/test_contents.py
@@ -1,7 +1,6 @@
 import unittest
 from importlib import resources
 
-from . import data01
 from . import util
 
 
@@ -19,25 +18,21 @@ def test_contents(self):
         assert self.expected <= contents
 
 
-class ContentsDiskTests(ContentsTests, unittest.TestCase):
-    def setUp(self):
-        self.data = data01
+class ContentsDiskTests(ContentsTests, util.DiskSetup, unittest.TestCase):
+    pass
 
 
 class ContentsZipTests(ContentsTests, util.ZipSetup, unittest.TestCase):
     pass
 
 
-class ContentsNamespaceTests(ContentsTests, unittest.TestCase):
+class ContentsNamespaceTests(ContentsTests, util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
+
     expected = {
         # no __init__ because of namespace design
-        # no subdirectory as incidental difference in fixture
         'binary.file',
+        'subdirectory',
         'utf-16.file',
         'utf-8.file',
     }
-
-    def setUp(self):
-        from . import namespacedata01
-
-        self.data = namespacedata01
diff --git a/Lib/test/test_importlib/resources/test_custom.py b/Lib/test/test_importlib/resources/test_custom.py
index 73127209a2761b..640f90fc0dd91a 100644
--- a/Lib/test/test_importlib/resources/test_custom.py
+++ b/Lib/test/test_importlib/resources/test_custom.py
@@ -5,6 +5,7 @@
 from test.support import os_helper
 
 from importlib import resources
+from importlib.resources import abc
 from importlib.resources.abc import TraversableResources, ResourceReader
 from . import util
 
@@ -39,8 +40,9 @@ def setUp(self):
         self.addCleanup(self.fixtures.close)
 
     def test_custom_loader(self):
-        temp_dir = self.fixtures.enter_context(os_helper.temp_dir())
+        temp_dir = pathlib.Path(self.fixtures.enter_context(os_helper.temp_dir()))
         loader = SimpleLoader(MagicResources(temp_dir))
         pkg = util.create_package_from_loader(loader)
         files = resources.files(pkg)
-        assert files is temp_dir
+        assert isinstance(files, abc.Traversable)
+        assert list(files.iterdir()) == []
diff --git a/Lib/test/test_importlib/resources/test_files.py b/Lib/test/test_importlib/resources/test_files.py
index 26c8b04e44c3b9..ef7b57959974ee 100644
--- a/Lib/test/test_importlib/resources/test_files.py
+++ b/Lib/test/test_importlib/resources/test_files.py
@@ -1,4 +1,3 @@
-import typing
 import textwrap
 import unittest
 import warnings
@@ -7,11 +6,7 @@
 
 from importlib import resources
 from importlib.resources.abc import Traversable
-from . import data01
 from . import util
-from . import _path
-from test.support import os_helper
-from test.support import import_helper
 
 
 @contextlib.contextmanager
@@ -32,13 +27,14 @@ def test_read_text(self):
         actual = files.joinpath('utf-8.file').read_text(encoding='utf-8')
         assert actual == 'Hello, UTF-8 world!\n'
 
-    @unittest.skipUnless(
-        hasattr(typing, 'runtime_checkable'),
-        "Only suitable when typing supports runtime_checkable",
-    )
     def test_traversable(self):
         assert isinstance(resources.files(self.data), Traversable)
 
+    def test_joinpath_with_multiple_args(self):
+        files = resources.files(self.data)
+        binfile = files.joinpath('subdirectory', 'binary.file')
+        self.assertTrue(binfile.is_file())
+
     def test_old_parameter(self):
         """
         Files used to take a 'package' parameter. Make sure anyone
@@ -48,66 +44,116 @@ def test_old_parameter(self):
             resources.files(package=self.data)
 
 
-class OpenDiskTests(FilesTests, unittest.TestCase):
-    def setUp(self):
-        self.data = data01
+class OpenDiskTests(FilesTests, util.DiskSetup, unittest.TestCase):
+    pass
 
 
 class OpenZipTests(FilesTests, util.ZipSetup, unittest.TestCase):
     pass
 
 
-class OpenNamespaceTests(FilesTests, unittest.TestCase):
-    def setUp(self):
-        from . import namespacedata01
+class OpenNamespaceTests(FilesTests, util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
+
+    def test_non_paths_in_dunder_path(self):
+        """
+        Non-path items in a namespace package's ``__path__`` are ignored.
+
+        As reported in python/importlib_resources#311, some tools
+        like Setuptools, when creating editable packages, will inject
+        non-paths into a namespace package's ``__path__``, a
+        sentinel like
+        ``__editable__.sample_namespace-1.0.finder.__path_hook__``
+        to cause the ``PathEntryFinder`` to be called when searching
+        for packages. In that case, resources should still be loadable.
+        """
+        import namespacedata01
+
+        namespacedata01.__path__.append(
+            '__editable__.sample_namespace-1.0.finder.__path_hook__'
+        )
+
+        resources.files(namespacedata01)
 
-        self.data = namespacedata01
 
+class OpenNamespaceZipTests(FilesTests, util.ZipSetup, unittest.TestCase):
+    ZIP_MODULE = 'namespacedata01'
 
-class SiteDir:
-    def setUp(self):
-        self.fixtures = contextlib.ExitStack()
-        self.addCleanup(self.fixtures.close)
-        self.site_dir = self.fixtures.enter_context(os_helper.temp_dir())
-        self.fixtures.enter_context(import_helper.DirsOnSysPath(self.site_dir))
-        self.fixtures.enter_context(import_helper.isolated_modules())
 
+class DirectSpec:
+    """
+    Override behavior of ModuleSetup to write a full spec directly.
+    """
+
+    MODULE = 'unused'
+
+    def load_fixture(self, name):
+        self.tree_on_path(self.spec)
+
+
+class ModulesFiles:
+    spec = {
+        'mod.py': '',
+        'res.txt': 'resources are the best',
+    }
 
-class ModulesFilesTests(SiteDir, unittest.TestCase):
     def test_module_resources(self):
         """
         A module can have resources found adjacent to the module.
         """
-        spec = {
-            'mod.py': '',
-            'res.txt': 'resources are the best',
-        }
-        _path.build(spec, self.site_dir)
-        import mod
+        import mod  # type: ignore[import-not-found]
 
         actual = resources.files(mod).joinpath('res.txt').read_text(encoding='utf-8')
-        assert actual == spec['res.txt']
+        assert actual == self.spec['res.txt']
 
 
-class ImplicitContextFilesTests(SiteDir, unittest.TestCase):
-    def test_implicit_files(self):
+class ModuleFilesDiskTests(DirectSpec, util.DiskSetup, ModulesFiles, unittest.TestCase):
+    pass
+
+
+class ModuleFilesZipTests(DirectSpec, util.ZipSetup, ModulesFiles, unittest.TestCase):
+    pass
+
+
+class ImplicitContextFiles:
+    set_val = textwrap.dedent(
+        """
+        import importlib.resources as res
+        val = res.files().joinpath('res.txt').read_text(encoding='utf-8')
+        """
+    )
+    spec = {
+        'somepkg': {
+            '__init__.py': set_val,
+            'submod.py': set_val,
+            'res.txt': 'resources are the best',
+        },
+    }
+
+    def test_implicit_files_package(self):
         """
         Without any parameter, files() will infer the location as the caller.
         """
-        spec = {
-            'somepkg': {
-                '__init__.py': textwrap.dedent(
-                    """
-                    import importlib.resources as res
-                    val = res.files().joinpath('res.txt').read_text(encoding='utf-8')
-                    """
-                ),
-                'res.txt': 'resources are the best',
-            },
-        }
-        _path.build(spec, self.site_dir)
         assert importlib.import_module('somepkg').val == 'resources are the best'
 
+    def test_implicit_files_submodule(self):
+        """
+        Without any parameter, files() will infer the location as the caller.
+        """
+        assert importlib.import_module('somepkg.submod').val == 'resources are the best'
+
+
+class ImplicitContextFilesDiskTests(
+    DirectSpec, util.DiskSetup, ImplicitContextFiles, unittest.TestCase
+):
+    pass
+
+
+class ImplicitContextFilesZipTests(
+    DirectSpec, util.ZipSetup, ImplicitContextFiles, unittest.TestCase
+):
+    pass
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_importlib/resources/test_functional.py b/Lib/test/test_importlib/resources/test_functional.py
index d60a2bedd89798..3fc1ade35bef5a 100644
--- a/Lib/test/test_importlib/resources/test_functional.py
+++ b/Lib/test/test_importlib/resources/test_functional.py
@@ -1,9 +1,13 @@
 import unittest
 import os
+import importlib
 
-from test.support.warnings_helper import ignore_warnings, check_warnings
+from test.support import warnings_helper
+from test.support.testcase import ExtraAssertions
 
-import importlib.resources as resources
+from importlib import resources
+
+from . import util
 
 # Since the functional API forwards to Traversable, we only test
 # filesystem resources here -- not zip files, namespace packages etc.
@@ -11,19 +15,27 @@
 
 
 class StringAnchorMixin:
-    anchor01 = 'test.test_importlib.resources.data01'
-    anchor02 = 'test.test_importlib.resources.data02'
+    anchor01 = 'data01'
+    anchor02 = 'data02'
 
 
 class ModuleAnchorMixin:
-    from . import data01 as anchor01
-    from . import data02 as anchor02
+    @property
+    def anchor01(self):
+        return importlib.import_module('data01')
+
+    @property
+    def anchor02(self):
+        return importlib.import_module('data02')
 
 
-class FunctionalAPIBase:
+class FunctionalAPIBase(util.DiskSetup, ExtraAssertions):
+    def setUp(self):
+        super().setUp()
+        self.load_fixture('data02')
+
     def _gen_resourcetxt_path_parts(self):
-        """Yield various names of a text file in anchor02, each in a subTest
-        """
+        """Yield various names of a text file in anchor02, each in a subTest"""
         for path_parts in (
             ('subdirectory', 'subsubdir', 'resource.txt'),
             ('subdirectory/subsubdir/resource.txt',),
@@ -32,12 +44,6 @@ def _gen_resourcetxt_path_parts(self):
             with self.subTest(path_parts=path_parts):
                 yield path_parts
 
-    def assertEndsWith(self, string, suffix):
-        """Assert that `string` ends with `suffix`.
-
-        Used to ignore an architecture-specific UTF-16 byte-order mark."""
-        self.assertEqual(string[-len(suffix):], suffix)
-
     def test_read_text(self):
         self.assertEqual(
             resources.read_text(self.anchor01, 'utf-8.file'),
@@ -45,7 +51,10 @@ def test_read_text(self):
         )
         self.assertEqual(
             resources.read_text(
-                self.anchor02, 'subdirectory', 'subsubdir', 'resource.txt',
+                self.anchor02,
+                'subdirectory',
+                'subsubdir',
+                'resource.txt',
                 encoding='utf-8',
             ),
             'a resource',
@@ -53,7 +62,9 @@ def test_read_text(self):
         for path_parts in self._gen_resourcetxt_path_parts():
             self.assertEqual(
                 resources.read_text(
-                    self.anchor02, *path_parts, encoding='utf-8',
+                    self.anchor02,
+                    *path_parts,
+                    encoding='utf-8',
                 ),
                 'a resource',
             )
@@ -67,13 +78,16 @@ def test_read_text(self):
             resources.read_text(self.anchor01, 'utf-16.file')
         self.assertEqual(
             resources.read_text(
-                self.anchor01, 'binary.file', encoding='latin1',
+                self.anchor01,
+                'binary.file',
+                encoding='latin1',
             ),
             '\x00\x01\x02\x03',
         )
         self.assertEndsWith(  # ignore the BOM
             resources.read_text(
-                self.anchor01, 'utf-16.file',
+                self.anchor01,
+                'utf-16.file',
                 errors='backslashreplace',
             ),
             'Hello, UTF-16 world!\n'.encode('utf-16-le').decode(
@@ -97,7 +111,8 @@ def test_open_text(self):
             self.assertEqual(f.read(), 'Hello, UTF-8 world!\n')
         for path_parts in self._gen_resourcetxt_path_parts():
             with resources.open_text(
-                self.anchor02, *path_parts,
+                self.anchor02,
+                *path_parts,
                 encoding='utf-8',
             ) as f:
                 self.assertEqual(f.read(), 'a resource')
@@ -111,11 +126,14 @@ def test_open_text(self):
             with self.assertRaises(UnicodeDecodeError):
                 f.read()
         with resources.open_text(
-            self.anchor01, 'binary.file', encoding='latin1',
+            self.anchor01,
+            'binary.file',
+            encoding='latin1',
         ) as f:
             self.assertEqual(f.read(), '\x00\x01\x02\x03')
         with resources.open_text(
-            self.anchor01, 'utf-16.file',
+            self.anchor01,
+            'utf-16.file',
             errors='backslashreplace',
         ) as f:
             self.assertEndsWith(  # ignore the BOM
@@ -130,16 +148,17 @@ def test_open_binary(self):
             self.assertEqual(f.read(), b'Hello, UTF-8 world!\n')
         for path_parts in self._gen_resourcetxt_path_parts():
             with resources.open_binary(
-                self.anchor02, *path_parts,
+                self.anchor02,
+                *path_parts,
             ) as f:
                 self.assertEqual(f.read(), b'a resource')
 
     def test_path(self):
         with resources.path(self.anchor01, 'utf-8.file') as path:
-            with open(str(path)) as f:
+            with open(str(path), encoding='utf-8') as f:
                 self.assertEqual(f.read(), 'Hello, UTF-8 world!\n')
         with resources.path(self.anchor01) as path:
-            with open(os.path.join(path, 'utf-8.file')) as f:
+            with open(os.path.join(path, 'utf-8.file'), encoding='utf-8') as f:
                 self.assertEqual(f.read(), 'Hello, UTF-8 world!\n')
 
     def test_is_resource(self):
@@ -152,32 +171,32 @@ def test_is_resource(self):
             self.assertTrue(is_resource(self.anchor02, *path_parts))
 
     def test_contents(self):
-        is_resource = resources.is_resource
-        with check_warnings((".*contents.*", DeprecationWarning)):
+        with warnings_helper.check_warnings((".*contents.*", DeprecationWarning)):
             c = resources.contents(self.anchor01)
         self.assertGreaterEqual(
             set(c),
             {'utf-8.file', 'utf-16.file', 'binary.file', 'subdirectory'},
         )
-        with (
-            self.assertRaises(OSError),
-            check_warnings((".*contents.*", DeprecationWarning)),
-        ):
+        with self.assertRaises(OSError), warnings_helper.check_warnings((
+            ".*contents.*",
+            DeprecationWarning,
+        )):
             list(resources.contents(self.anchor01, 'utf-8.file'))
+
         for path_parts in self._gen_resourcetxt_path_parts():
-            with (
-                self.assertRaises(OSError),
-                check_warnings((".*contents.*", DeprecationWarning)),
-            ):
+            with self.assertRaises(OSError), warnings_helper.check_warnings((
+                ".*contents.*",
+                DeprecationWarning,
+            )):
                 list(resources.contents(self.anchor01, *path_parts))
-        with check_warnings((".*contents.*", DeprecationWarning)):
+        with warnings_helper.check_warnings((".*contents.*", DeprecationWarning)):
             c = resources.contents(self.anchor01, 'subdirectory')
         self.assertGreaterEqual(
             set(c),
             {'binary.file'},
         )
 
-    @ignore_warnings(category=DeprecationWarning)
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)
     def test_common_errors(self):
         for func in (
             resources.read_text,
@@ -208,18 +227,24 @@ def test_text_errors(self):
                 # Multiple path arguments need explicit encoding argument.
                 with self.assertRaises(TypeError):
                     func(
-                        self.anchor02, 'subdirectory',
-                        'subsubdir', 'resource.txt',
+                        self.anchor02,
+                        'subdirectory',
+                        'subsubdir',
+                        'resource.txt',
                     )
 
 
 class FunctionalAPITest_StringAnchor(
-    unittest.TestCase, FunctionalAPIBase, StringAnchorMixin,
+    StringAnchorMixin,
+    FunctionalAPIBase,
+    unittest.TestCase,
 ):
     pass
 
 
 class FunctionalAPITest_ModuleAnchor(
-    unittest.TestCase, FunctionalAPIBase, ModuleAnchorMixin,
+    ModuleAnchorMixin,
+    FunctionalAPIBase,
+    unittest.TestCase,
 ):
     pass
diff --git a/Lib/test/test_importlib/resources/test_open.py b/Lib/test/test_importlib/resources/test_open.py
index 86becb4bfaad37..8c00378ad3cc9c 100644
--- a/Lib/test/test_importlib/resources/test_open.py
+++ b/Lib/test/test_importlib/resources/test_open.py
@@ -1,7 +1,6 @@
 import unittest
 
 from importlib import resources
-from . import data01
 from . import util
 
 
@@ -24,7 +23,7 @@ def test_open_binary(self):
         target = resources.files(self.data) / 'binary.file'
         with target.open('rb') as fp:
             result = fp.read()
-            self.assertEqual(result, b'\x00\x01\x02\x03')
+            self.assertEqual(result, bytes(range(4)))
 
     def test_open_text_default_encoding(self):
         target = resources.files(self.data) / 'utf-8.file'
@@ -65,21 +64,21 @@ def test_open_text_FileNotFoundError(self):
             target.open(encoding='utf-8')
 
 
-class OpenDiskTests(OpenTests, unittest.TestCase):
-    def setUp(self):
-        self.data = data01
-
+class OpenDiskTests(OpenTests, util.DiskSetup, unittest.TestCase):
+    pass
 
-class OpenDiskNamespaceTests(OpenTests, unittest.TestCase):
-    def setUp(self):
-        from . import namespacedata01
 
-        self.data = namespacedata01
+class OpenDiskNamespaceTests(OpenTests, util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
 
 
 class OpenZipTests(OpenTests, util.ZipSetup, unittest.TestCase):
     pass
 
 
+class OpenNamespaceZipTests(OpenTests, util.ZipSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_importlib/resources/test_path.py b/Lib/test/test_importlib/resources/test_path.py
index 34a6bdd2d58b91..378dc7a2baeb23 100644
--- a/Lib/test/test_importlib/resources/test_path.py
+++ b/Lib/test/test_importlib/resources/test_path.py
@@ -1,8 +1,8 @@
 import io
+import pathlib
 import unittest
 
 from importlib import resources
-from . import data01
 from . import util
 
 
@@ -15,23 +15,16 @@ def execute(self, package, path):
 class PathTests:
     def test_reading(self):
         """
-        Path should be readable.
-
-        Test also implicitly verifies the returned object is a pathlib.Path
-        instance.
+        Path should be readable and a pathlib.Path instance.
         """
         target = resources.files(self.data) / 'utf-8.file'
         with resources.as_file(target) as path:
+            self.assertIsInstance(path, pathlib.Path)
             self.assertTrue(path.name.endswith("utf-8.file"), repr(path))
-            # pathlib.Path.read_text() was introduced in Python 3.5.
-            with path.open('r', encoding='utf-8') as file:
-                text = file.read()
-            self.assertEqual('Hello, UTF-8 world!\n', text)
-
+            self.assertEqual('Hello, UTF-8 world!\n', path.read_text(encoding='utf-8'))
 
-class PathDiskTests(PathTests, unittest.TestCase):
-    data = data01
 
+class PathDiskTests(PathTests, util.DiskSetup, unittest.TestCase):
     def test_natural_path(self):
         # Guarantee the internal implementation detail that
         # file-system-backed resources do not get the tempdir
diff --git a/Lib/test/test_importlib/resources/test_read.py b/Lib/test/test_importlib/resources/test_read.py
index 088982681e8b0c..59c237d964121e 100644
--- a/Lib/test/test_importlib/resources/test_read.py
+++ b/Lib/test/test_importlib/resources/test_read.py
@@ -1,7 +1,7 @@
 import unittest
 
 from importlib import import_module, resources
-from . import data01
+
 from . import util
 
 
@@ -18,7 +18,7 @@ def execute(self, package, path):
 class ReadTests:
     def test_read_bytes(self):
         result = resources.files(self.data).joinpath('binary.file').read_bytes()
-        self.assertEqual(result, b'\0\1\2\3')
+        self.assertEqual(result, bytes(range(4)))
 
     def test_read_text_default_encoding(self):
         result = (
@@ -51,30 +51,42 @@ def test_read_text_with_errors(self):
         )
 
 
-class ReadDiskTests(ReadTests, unittest.TestCase):
-    data = data01
+class ReadDiskTests(ReadTests, util.DiskSetup, unittest.TestCase):
+    pass
 
 
 class ReadZipTests(ReadTests, util.ZipSetup, unittest.TestCase):
     def test_read_submodule_resource(self):
-        submodule = import_module('ziptestdata.subdirectory')
+        submodule = import_module('data01.subdirectory')
         result = resources.files(submodule).joinpath('binary.file').read_bytes()
-        self.assertEqual(result, b'\0\1\2\3')
+        self.assertEqual(result, bytes(range(4, 8)))
 
     def test_read_submodule_resource_by_name(self):
         result = (
-            resources.files('ziptestdata.subdirectory')
-            .joinpath('binary.file')
-            .read_bytes()
+            resources.files('data01.subdirectory').joinpath('binary.file').read_bytes()
         )
-        self.assertEqual(result, b'\0\1\2\3')
+        self.assertEqual(result, bytes(range(4, 8)))
+
 
+class ReadNamespaceTests(ReadTests, util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
 
-class ReadNamespaceTests(ReadTests, unittest.TestCase):
-    def setUp(self):
-        from . import namespacedata01
 
-        self.data = namespacedata01
+class ReadNamespaceZipTests(ReadTests, util.ZipSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
+
+    def test_read_submodule_resource(self):
+        submodule = import_module('namespacedata01.subdirectory')
+        result = resources.files(submodule).joinpath('binary.file').read_bytes()
+        self.assertEqual(result, bytes(range(12, 16)))
+
+    def test_read_submodule_resource_by_name(self):
+        result = (
+            resources.files('namespacedata01.subdirectory')
+            .joinpath('binary.file')
+            .read_bytes()
+        )
+        self.assertEqual(result, bytes(range(12, 16)))
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_importlib/resources/test_reader.py b/Lib/test/test_importlib/resources/test_reader.py
index 8670f72a334585..ed5693ab416798 100644
--- a/Lib/test/test_importlib/resources/test_reader.py
+++ b/Lib/test/test_importlib/resources/test_reader.py
@@ -1,17 +1,21 @@
 import os.path
-import sys
 import pathlib
 import unittest
 
 from importlib import import_module
 from importlib.readers import MultiplexedPath, NamespaceReader
 
+from . import util
 
-class MultiplexedPathTest(unittest.TestCase):
-    @classmethod
-    def setUpClass(cls):
-        path = pathlib.Path(__file__).parent / 'namespacedata01'
-        cls.folder = str(path)
+
+class MultiplexedPathTest(util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
+
+    def setUp(self):
+        super().setUp()
+        self.folder = pathlib.Path(self.data.__path__[0])
+        self.data01 = pathlib.Path(self.load_fixture('data01').__file__).parent
+        self.data02 = pathlib.Path(self.load_fixture('data02').__file__).parent
 
     def test_init_no_paths(self):
         with self.assertRaises(FileNotFoundError):
@@ -19,7 +23,7 @@ def test_init_no_paths(self):
 
     def test_init_file(self):
         with self.assertRaises(NotADirectoryError):
-            MultiplexedPath(os.path.join(self.folder, 'binary.file'))
+            MultiplexedPath(self.folder / 'binary.file')
 
     def test_iterdir(self):
         contents = {path.name for path in MultiplexedPath(self.folder).iterdir()}
@@ -27,12 +31,13 @@ def test_iterdir(self):
             contents.remove('__pycache__')
         except (KeyError, ValueError):
             pass
-        self.assertEqual(contents, {'binary.file', 'utf-16.file', 'utf-8.file'})
+        self.assertEqual(
+            contents, {'subdirectory', 'binary.file', 'utf-16.file', 'utf-8.file'}
+        )
 
     def test_iterdir_duplicate(self):
-        data01 = os.path.abspath(os.path.join(__file__, '..', 'data01'))
         contents = {
-            path.name for path in MultiplexedPath(self.folder, data01).iterdir()
+            path.name for path in MultiplexedPath(self.folder, self.data01).iterdir()
         }
         for remove in ('__pycache__', '__init__.pyc'):
             try:
@@ -60,17 +65,16 @@ def test_open_file(self):
             path.open()
 
     def test_join_path(self):
-        prefix = os.path.abspath(os.path.join(__file__, '..'))
-        data01 = os.path.join(prefix, 'data01')
-        path = MultiplexedPath(self.folder, data01)
+        prefix = str(self.folder.parent)
+        path = MultiplexedPath(self.folder, self.data01)
         self.assertEqual(
             str(path.joinpath('binary.file'))[len(prefix) + 1 :],
             os.path.join('namespacedata01', 'binary.file'),
         )
-        self.assertEqual(
-            str(path.joinpath('subdirectory'))[len(prefix) + 1 :],
-            os.path.join('data01', 'subdirectory'),
-        )
+        sub = path.joinpath('subdirectory')
+        assert isinstance(sub, MultiplexedPath)
+        assert 'namespacedata01' in str(sub)
+        assert 'data01' in str(sub)
         self.assertEqual(
             str(path.joinpath('imaginary'))[len(prefix) + 1 :],
             os.path.join('namespacedata01', 'imaginary'),
@@ -82,10 +86,8 @@ def test_join_path_compound(self):
         assert not path.joinpath('imaginary/foo.py').exists()
 
     def test_join_path_common_subdir(self):
-        prefix = os.path.abspath(os.path.join(__file__, '..'))
-        data01 = os.path.join(prefix, 'data01')
-        data02 = os.path.join(prefix, 'data02')
-        path = MultiplexedPath(data01, data02)
+        prefix = str(self.data02.parent)
+        path = MultiplexedPath(self.data01, self.data02)
         self.assertIsInstance(path.joinpath('subdirectory'), MultiplexedPath)
         self.assertEqual(
             str(path.joinpath('subdirectory', 'subsubdir'))[len(prefix) + 1 :],
@@ -105,16 +107,8 @@ def test_name(self):
         )
 
 
-class NamespaceReaderTest(unittest.TestCase):
-    site_dir = str(pathlib.Path(__file__).parent)
-
-    @classmethod
-    def setUpClass(cls):
-        sys.path.append(cls.site_dir)
-
-    @classmethod
-    def tearDownClass(cls):
-        sys.path.remove(cls.site_dir)
+class NamespaceReaderTest(util.DiskSetup, unittest.TestCase):
+    MODULE = 'namespacedata01'
 
     def test_init_error(self):
         with self.assertRaises(ValueError):
@@ -124,7 +118,7 @@ def test_resource_path(self):
         namespacedata01 = import_module('namespacedata01')
         reader = NamespaceReader(namespacedata01.__spec__.submodule_search_locations)
 
-        root = os.path.abspath(os.path.join(__file__, '..', 'namespacedata01'))
+        root = self.data.__path__[0]
         self.assertEqual(
             reader.resource_path('binary.file'), os.path.join(root, 'binary.file')
         )
@@ -133,9 +127,8 @@ def test_resource_path(self):
         )
 
     def test_files(self):
-        namespacedata01 = import_module('namespacedata01')
-        reader = NamespaceReader(namespacedata01.__spec__.submodule_search_locations)
-        root = os.path.abspath(os.path.join(__file__, '..', 'namespacedata01'))
+        reader = NamespaceReader(self.data.__spec__.submodule_search_locations)
+        root = self.data.__path__[0]
         self.assertIsInstance(reader.files(), MultiplexedPath)
         self.assertEqual(repr(reader.files()), f"MultiplexedPath('{root}')")
 
diff --git a/Lib/test/test_importlib/resources/test_resource.py b/Lib/test/test_importlib/resources/test_resource.py
index 6f75cf57f03d02..fcede14b891a84 100644
--- a/Lib/test/test_importlib/resources/test_resource.py
+++ b/Lib/test/test_importlib/resources/test_resource.py
@@ -1,15 +1,7 @@
-import contextlib
-import sys
 import unittest
-import uuid
-import pathlib
 
-from . import data01
-from . import zipdata01, zipdata02
 from . import util
 from importlib import resources, import_module
-from test.support import import_helper, os_helper
-from test.support.os_helper import unlink
 
 
 class ResourceTests:
@@ -29,9 +21,8 @@ def test_is_dir(self):
         self.assertTrue(target.is_dir())
 
 
-class ResourceDiskTests(ResourceTests, unittest.TestCase):
-    def setUp(self):
-        self.data = data01
+class ResourceDiskTests(ResourceTests, util.DiskSetup, unittest.TestCase):
+    pass
 
 
 class ResourceZipTests(ResourceTests, util.ZipSetup, unittest.TestCase):
@@ -42,33 +33,39 @@ def names(traversable):
     return {item.name for item in traversable.iterdir()}
 
 
-class ResourceLoaderTests(unittest.TestCase):
+class ResourceLoaderTests(util.DiskSetup, unittest.TestCase):
     def test_resource_contents(self):
         package = util.create_package(
-            file=data01, path=data01.__file__, contents=['A', 'B', 'C']
+            file=self.data, path=self.data.__file__, contents=['A', 'B', 'C']
         )
         self.assertEqual(names(resources.files(package)), {'A', 'B', 'C'})
 
     def test_is_file(self):
         package = util.create_package(
-            file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
+            file=self.data,
+            path=self.data.__file__,
+            contents=['A', 'B', 'C', 'D/E', 'D/F'],
         )
         self.assertTrue(resources.files(package).joinpath('B').is_file())
 
     def test_is_dir(self):
         package = util.create_package(
-            file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
+            file=self.data,
+            path=self.data.__file__,
+            contents=['A', 'B', 'C', 'D/E', 'D/F'],
         )
         self.assertTrue(resources.files(package).joinpath('D').is_dir())
 
     def test_resource_missing(self):
         package = util.create_package(
-            file=data01, path=data01.__file__, contents=['A', 'B', 'C', 'D/E', 'D/F']
+            file=self.data,
+            path=self.data.__file__,
+            contents=['A', 'B', 'C', 'D/E', 'D/F'],
         )
         self.assertFalse(resources.files(package).joinpath('Z').is_file())
 
 
-class ResourceCornerCaseTests(unittest.TestCase):
+class ResourceCornerCaseTests(util.DiskSetup, unittest.TestCase):
     def test_package_has_no_reader_fallback(self):
         """
         Test odd ball packages which:
@@ -77,7 +74,7 @@ def test_package_has_no_reader_fallback(self):
         # 3. Are not in a zip file
         """
         module = util.create_package(
-            file=data01, path=data01.__file__, contents=['A', 'B', 'C']
+            file=self.data, path=self.data.__file__, contents=['A', 'B', 'C']
         )
         # Give the module a dummy loader.
         module.__loader__ = object()
@@ -88,43 +85,39 @@ def test_package_has_no_reader_fallback(self):
         self.assertFalse(resources.files(module).joinpath('A').is_file())
 
 
-class ResourceFromZipsTest01(util.ZipSetupBase, unittest.TestCase):
-    ZIP_MODULE = zipdata01  # type: ignore
-
+class ResourceFromZipsTest01(util.ZipSetup, unittest.TestCase):
     def test_is_submodule_resource(self):
-        submodule = import_module('ziptestdata.subdirectory')
+        submodule = import_module('data01.subdirectory')
         self.assertTrue(resources.files(submodule).joinpath('binary.file').is_file())
 
     def test_read_submodule_resource_by_name(self):
         self.assertTrue(
-            resources.files('ziptestdata.subdirectory')
-            .joinpath('binary.file')
-            .is_file()
+            resources.files('data01.subdirectory').joinpath('binary.file').is_file()
         )
 
     def test_submodule_contents(self):
-        submodule = import_module('ziptestdata.subdirectory')
+        submodule = import_module('data01.subdirectory')
         self.assertEqual(
             names(resources.files(submodule)), {'__init__.py', 'binary.file'}
         )
 
     def test_submodule_contents_by_name(self):
         self.assertEqual(
-            names(resources.files('ziptestdata.subdirectory')),
+            names(resources.files('data01.subdirectory')),
             {'__init__.py', 'binary.file'},
         )
 
     def test_as_file_directory(self):
-        with resources.as_file(resources.files('ziptestdata')) as data:
-            assert data.name == 'ziptestdata'
+        with resources.as_file(resources.files('data01')) as data:
+            assert data.name == 'data01'
             assert data.is_dir()
             assert data.joinpath('subdirectory').is_dir()
             assert len(list(data.iterdir()))
         assert not data.parent.exists()
 
 
-class ResourceFromZipsTest02(util.ZipSetupBase, unittest.TestCase):
-    ZIP_MODULE = zipdata02  # type: ignore
+class ResourceFromZipsTest02(util.ZipSetup, unittest.TestCase):
+    MODULE = 'data02'
 
     def test_unrelated_contents(self):
         """
@@ -132,93 +125,48 @@ def test_unrelated_contents(self):
         distinct resources. Ref python/importlib_resources#44.
         """
         self.assertEqual(
-            names(resources.files('ziptestdata.one')),
+            names(resources.files('data02.one')),
             {'__init__.py', 'resource1.txt'},
         )
         self.assertEqual(
-            names(resources.files('ziptestdata.two')),
+            names(resources.files('data02.two')),
             {'__init__.py', 'resource2.txt'},
         )
 
 
-@contextlib.contextmanager
-def zip_on_path(dir):
-    data_path = pathlib.Path(zipdata01.__file__)
-    source_zip_path = data_path.parent.joinpath('ziptestdata.zip')
-    zip_path = pathlib.Path(dir) / f'{uuid.uuid4()}.zip'
-    zip_path.write_bytes(source_zip_path.read_bytes())
-    sys.path.append(str(zip_path))
-    import_module('ziptestdata')
-
-    try:
-        yield
-    finally:
-        with contextlib.suppress(ValueError):
-            sys.path.remove(str(zip_path))
-
-        with contextlib.suppress(KeyError):
-            del sys.path_importer_cache[str(zip_path)]
-            del sys.modules['ziptestdata']
-
-        with contextlib.suppress(OSError):
-            unlink(zip_path)
-
-
-class DeletingZipsTest(unittest.TestCase):
+class DeletingZipsTest(util.ZipSetup, unittest.TestCase):
     """Having accessed resources in a zip file should not keep an open
     reference to the zip.
     """
 
-    def setUp(self):
-        self.fixtures = contextlib.ExitStack()
-        self.addCleanup(self.fixtures.close)
-
-        modules = import_helper.modules_setup()
-        self.addCleanup(import_helper.modules_cleanup, *modules)
-
-        temp_dir = self.fixtures.enter_context(os_helper.temp_dir())
-        self.fixtures.enter_context(zip_on_path(temp_dir))
-
     def test_iterdir_does_not_keep_open(self):
-        [item.name for item in resources.files('ziptestdata').iterdir()]
+        [item.name for item in resources.files('data01').iterdir()]
 
     def test_is_file_does_not_keep_open(self):
-        resources.files('ziptestdata').joinpath('binary.file').is_file()
+        resources.files('data01').joinpath('binary.file').is_file()
 
     def test_is_file_failure_does_not_keep_open(self):
-        resources.files('ziptestdata').joinpath('not-present').is_file()
+        resources.files('data01').joinpath('not-present').is_file()
 
     @unittest.skip("Desired but not supported.")
     def test_as_file_does_not_keep_open(self):  # pragma: no cover
-        resources.as_file(resources.files('ziptestdata') / 'binary.file')
+        resources.as_file(resources.files('data01') / 'binary.file')
 
     def test_entered_path_does_not_keep_open(self):
         """
         Mimic what certifi does on import to make its bundle
         available for the process duration.
         """
-        resources.as_file(resources.files('ziptestdata') / 'binary.file').__enter__()
+        resources.as_file(resources.files('data01') / 'binary.file').__enter__()
 
     def test_read_binary_does_not_keep_open(self):
-        resources.files('ziptestdata').joinpath('binary.file').read_bytes()
+        resources.files('data01').joinpath('binary.file').read_bytes()
 
     def test_read_text_does_not_keep_open(self):
-        resources.files('ziptestdata').joinpath('utf-8.file').read_text(
-            encoding='utf-8'
-        )
+        resources.files('data01').joinpath('utf-8.file').read_text(encoding='utf-8')
 
 
-class ResourceFromNamespaceTest01(unittest.TestCase):
-    site_dir = str(pathlib.Path(__file__).parent)
-
-    @classmethod
-    def setUpClass(cls):
-        sys.path.append(cls.site_dir)
-
-    @classmethod
-    def tearDownClass(cls):
-        sys.path.remove(cls.site_dir)
-
+class ResourceFromNamespaceTests:
     def test_is_submodule_resource(self):
         self.assertTrue(
             resources.files(import_module('namespacedata01'))
@@ -237,7 +185,9 @@ def test_submodule_contents(self):
             contents.remove('__pycache__')
         except KeyError:
             pass
-        self.assertEqual(contents, {'binary.file', 'utf-8.file', 'utf-16.file'})
+        self.assertEqual(
+            contents, {'subdirectory', 'binary.file', 'utf-8.file', 'utf-16.file'}
+        )
 
     def test_submodule_contents_by_name(self):
         contents = names(resources.files('namespacedata01'))
@@ -245,7 +195,41 @@ def test_submodule_contents_by_name(self):
             contents.remove('__pycache__')
         except KeyError:
             pass
-        self.assertEqual(contents, {'binary.file', 'utf-8.file', 'utf-16.file'})
+        self.assertEqual(
+            contents, {'subdirectory', 'binary.file', 'utf-8.file', 'utf-16.file'}
+        )
+
+    def test_submodule_sub_contents(self):
+        contents = names(resources.files(import_module('namespacedata01.subdirectory')))
+        try:
+            contents.remove('__pycache__')
+        except KeyError:
+            pass
+        self.assertEqual(contents, {'binary.file'})
+
+    def test_submodule_sub_contents_by_name(self):
+        contents = names(resources.files('namespacedata01.subdirectory'))
+        try:
+            contents.remove('__pycache__')
+        except KeyError:
+            pass
+        self.assertEqual(contents, {'binary.file'})
+
+
+class ResourceFromNamespaceDiskTests(
+    util.DiskSetup,
+    ResourceFromNamespaceTests,
+    unittest.TestCase,
+):
+    MODULE = 'namespacedata01'
+
+
+class ResourceFromNamespaceZipTests(
+    util.ZipSetup,
+    ResourceFromNamespaceTests,
+    unittest.TestCase,
+):
+    MODULE = 'namespacedata01'
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_importlib/resources/update-zips.py b/Lib/test/test_importlib/resources/update-zips.py
deleted file mode 100755
index 231334aa7e38b4..00000000000000
--- a/Lib/test/test_importlib/resources/update-zips.py
+++ /dev/null
@@ -1,53 +0,0 @@
-"""
-Generate the zip test data files.
-
-Run to build the tests/zipdataNN/ziptestdata.zip files from
-files in tests/dataNN.
-
-Replaces the file with the working copy, but does commit anything
-to the source repo.
-"""
-
-import contextlib
-import os
-import pathlib
-import zipfile
-
-
-def main():
-    """
-    >>> from unittest import mock
-    >>> monkeypatch = getfixture('monkeypatch')
-    >>> monkeypatch.setattr(zipfile, 'ZipFile', mock.MagicMock())
-    >>> print(); main()  # print workaround for bpo-32509
-    <BLANKLINE>
-    ...data01... -> ziptestdata/...
-    ...
-    ...data02... -> ziptestdata/...
-    ...
-    """
-    suffixes = '01', '02'
-    tuple(map(generate, suffixes))
-
-
-def generate(suffix):
-    root = pathlib.Path(__file__).parent.relative_to(os.getcwd())
-    zfpath = root / f'zipdata{suffix}/ziptestdata.zip'
-    with zipfile.ZipFile(zfpath, 'w') as zf:
-        for src, rel in walk(root / f'data{suffix}'):
-            dst = 'ziptestdata' / pathlib.PurePosixPath(rel.as_posix())
-            print(src, '->', dst)
-            zf.write(src, dst)
-
-
-def walk(datapath):
-    for dirpath, dirnames, filenames in os.walk(datapath):
-        with contextlib.suppress(ValueError):
-            dirnames.remove('__pycache__')
-        for filename in filenames:
-            res = pathlib.Path(dirpath) / filename
-            rel = res.relative_to(datapath)
-            yield res, rel
-
-
-__name__ == '__main__' and main()
diff --git a/Lib/test/test_importlib/resources/util.py b/Lib/test/test_importlib/resources/util.py
index dbe6ee81476699..e2d995f596317d 100644
--- a/Lib/test/test_importlib/resources/util.py
+++ b/Lib/test/test_importlib/resources/util.py
@@ -4,11 +4,12 @@
 import sys
 import types
 import pathlib
+import contextlib
 
-from . import data01
-from . import zipdata01
 from importlib.resources.abc import ResourceReader
-from test.support import import_helper
+from test.support import import_helper, os_helper
+from . import zip as zip_
+from . import _path
 
 
 from importlib.machinery import ModuleSpec
@@ -67,7 +68,7 @@ def create_package(file=None, path=None, is_package=True, contents=()):
     )
 
 
-class CommonTests(metaclass=abc.ABCMeta):
+class CommonTestsBase(metaclass=abc.ABCMeta):
     """
     Tests shared by test_open, test_path, and test_read.
     """
@@ -83,34 +84,34 @@ def test_package_name(self):
         """
         Passing in the package name should succeed.
         """
-        self.execute(data01.__name__, 'utf-8.file')
+        self.execute(self.data.__name__, 'utf-8.file')
 
     def test_package_object(self):
         """
         Passing in the package itself should succeed.
         """
-        self.execute(data01, 'utf-8.file')
+        self.execute(self.data, 'utf-8.file')
 
     def test_string_path(self):
         """
         Passing in a string for the path should succeed.
         """
         path = 'utf-8.file'
-        self.execute(data01, path)
+        self.execute(self.data, path)
 
     def test_pathlib_path(self):
         """
         Passing in a pathlib.PurePath object for the path should succeed.
         """
         path = pathlib.PurePath('utf-8.file')
-        self.execute(data01, path)
+        self.execute(self.data, path)
 
     def test_importing_module_as_side_effect(self):
         """
         The anchor package can already be imported.
         """
-        del sys.modules[data01.__name__]
-        self.execute(data01.__name__, 'utf-8.file')
+        del sys.modules[self.data.__name__]
+        self.execute(self.data.__name__, 'utf-8.file')
 
     def test_missing_path(self):
         """
@@ -140,40 +141,66 @@ def test_useless_loader(self):
             self.execute(package, 'utf-8.file')
 
 
-class ZipSetupBase:
-    ZIP_MODULE = None
-
-    @classmethod
-    def setUpClass(cls):
-        data_path = pathlib.Path(cls.ZIP_MODULE.__file__)
-        data_dir = data_path.parent
-        cls._zip_path = str(data_dir / 'ziptestdata.zip')
-        sys.path.append(cls._zip_path)
-        cls.data = importlib.import_module('ziptestdata')
-
-    @classmethod
-    def tearDownClass(cls):
-        try:
-            sys.path.remove(cls._zip_path)
-        except ValueError:
-            pass
-
-        try:
-            del sys.path_importer_cache[cls._zip_path]
-            del sys.modules[cls.data.__name__]
-        except KeyError:
-            pass
-
-        try:
-            del cls.data
-            del cls._zip_path
-        except AttributeError:
-            pass
-
+fixtures = dict(
+    data01={
+        '__init__.py': '',
+        'binary.file': bytes(range(4)),
+        'utf-16.file': '\ufeffHello, UTF-16 world!\n'.encode('utf-16-le'),
+        'utf-8.file': 'Hello, UTF-8 world!\n'.encode('utf-8'),
+        'subdirectory': {
+            '__init__.py': '',
+            'binary.file': bytes(range(4, 8)),
+        },
+    },
+    data02={
+        '__init__.py': '',
+        'one': {'__init__.py': '', 'resource1.txt': 'one resource'},
+        'two': {'__init__.py': '', 'resource2.txt': 'two resource'},
+        'subdirectory': {'subsubdir': {'resource.txt': 'a resource'}},
+    },
+    namespacedata01={
+        'binary.file': bytes(range(4)),
+        'utf-16.file': '\ufeffHello, UTF-16 world!\n'.encode('utf-16-le'),
+        'utf-8.file': 'Hello, UTF-8 world!\n'.encode('utf-8'),
+        'subdirectory': {
+            'binary.file': bytes(range(12, 16)),
+        },
+    },
+)
+
+
+class ModuleSetup:
     def setUp(self):
-        modules = import_helper.modules_setup()
-        self.addCleanup(import_helper.modules_cleanup, *modules)
+        self.fixtures = contextlib.ExitStack()
+        self.addCleanup(self.fixtures.close)
+
+        self.fixtures.enter_context(import_helper.isolated_modules())
+        self.data = self.load_fixture(self.MODULE)
+
+    def load_fixture(self, module):
+        self.tree_on_path({module: fixtures[module]})
+        return importlib.import_module(module)
+
+
+class ZipSetup(ModuleSetup):
+    MODULE = 'data01'
+
+    def tree_on_path(self, spec):
+        temp_dir = self.fixtures.enter_context(os_helper.temp_dir())
+        modules = pathlib.Path(temp_dir) / 'zipped modules.zip'
+        self.fixtures.enter_context(
+            import_helper.DirsOnSysPath(str(zip_.make_zip_file(spec, modules)))
+        )
+
+
+class DiskSetup(ModuleSetup):
+    MODULE = 'data01'
+
+    def tree_on_path(self, spec):
+        temp_dir = self.fixtures.enter_context(os_helper.temp_dir())
+        _path.build(spec, pathlib.Path(temp_dir))
+        self.fixtures.enter_context(import_helper.DirsOnSysPath(temp_dir))
 
 
-class ZipSetup(ZipSetupBase):
-    ZIP_MODULE = zipdata01  # type: ignore
+class CommonTests(DiskSetup, CommonTestsBase):
+    pass
diff --git a/Lib/test/test_importlib/resources/zip.py b/Lib/test/test_importlib/resources/zip.py
new file mode 100755
index 00000000000000..fc453f02060a31
--- /dev/null
+++ b/Lib/test/test_importlib/resources/zip.py
@@ -0,0 +1,24 @@
+"""
+Generate zip test data files.
+"""
+
+import zipfile
+
+
+def make_zip_file(tree, dst):
+    """
+    Zip the files in tree into a new zipfile at dst.
+    """
+    with zipfile.ZipFile(dst, 'w') as zf:
+        for name, contents in walk(tree):
+            zf.writestr(name, contents)
+        zipfile._path.CompleteDirs.inject(zf)
+    return dst
+
+
+def walk(tree, prefix=''):
+    for name, contents in tree.items():
+        if isinstance(contents, dict):
+            yield from walk(contents, prefix=f'{prefix}{name}/')
+        else:
+            yield f'{prefix}{name}', contents
diff --git a/Lib/test/test_importlib/resources/zipdata01/__init__.py b/Lib/test/test_importlib/resources/zipdata01/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/zipdata01/ziptestdata.zip b/Lib/test/test_importlib/resources/zipdata01/ziptestdata.zip
deleted file mode 100644
index 9a3bb0739f87e9..00000000000000
Binary files a/Lib/test/test_importlib/resources/zipdata01/ziptestdata.zip and /dev/null differ
diff --git a/Lib/test/test_importlib/resources/zipdata02/__init__.py b/Lib/test/test_importlib/resources/zipdata02/__init__.py
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/Lib/test/test_importlib/resources/zipdata02/ziptestdata.zip b/Lib/test/test_importlib/resources/zipdata02/ziptestdata.zip
deleted file mode 100644
index d63ff512d2807e..00000000000000
Binary files a/Lib/test/test_importlib/resources/zipdata02/ziptestdata.zip and /dev/null differ
diff --git a/Lib/test/test_importlib/test_abc.py b/Lib/test/test_importlib/test_abc.py
index 603125f6d926f6..1a77773255165b 100644
--- a/Lib/test/test_importlib/test_abc.py
+++ b/Lib/test/test_importlib/test_abc.py
@@ -913,5 +913,30 @@ def test_universal_newlines(self):
                          SourceOnlyLoaderMock=SPLIT_SOL)
 
 
+class DeprecatedAttrsTests:
+
+    """Test the deprecated attributes can be accessed."""
+
+    def test_deprecated_attr_ResourceReader(self):
+        with self.assertWarns(DeprecationWarning):
+            self.abc.ResourceReader
+        del self.abc.ResourceReader
+
+    def test_deprecated_attr_Traversable(self):
+        with self.assertWarns(DeprecationWarning):
+            self.abc.Traversable
+        del self.abc.Traversable
+
+    def test_deprecated_attr_TraversableResources(self):
+        with self.assertWarns(DeprecationWarning):
+            self.abc.TraversableResources
+        del self.abc.TraversableResources
+
+
+(Frozen_DeprecatedAttrsTests,
+ Source_DeprecatedAttrsTests
+ ) = test_util.test_both(DeprecatedAttrsTests, abc=abc)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_importlib/test_api.py b/Lib/test/test_importlib/test_api.py
index 2a35f3dcb7210c..3bf8d7ac9c4022 100644
--- a/Lib/test/test_importlib/test_api.py
+++ b/Lib/test/test_importlib/test_api.py
@@ -8,6 +8,8 @@
 import sys
 from test.support import import_helper
 from test.support import os_helper
+from test import support
+import traceback
 import types
 import unittest
 
@@ -353,6 +355,20 @@ def test_module_missing_spec(self):
             with self.assertRaises(ModuleNotFoundError):
                 self.init.reload(module)
 
+    def test_reload_traceback_with_non_str(self):
+        # gh-125519
+        with support.captured_stdout() as stdout:
+            try:
+                self.init.reload("typing")
+            except TypeError as exc:
+                traceback.print_exception(exc, file=stdout)
+            else:
+                self.fail("Expected TypeError to be raised")
+        printed_traceback = stdout.getvalue()
+        self.assertIn("TypeError", printed_traceback)
+        self.assertNotIn("AttributeError", printed_traceback)
+        self.assertNotIn("module.__spec__.name", printed_traceback)
+
 
 (Frozen_ReloadTests,
  Source_ReloadTests
diff --git a/Lib/test/test_importlib/test_threaded_import.py b/Lib/test/test_importlib/test_threaded_import.py
index 3477112927a0b6..9af1e4d505c66e 100644
--- a/Lib/test/test_importlib/test_threaded_import.py
+++ b/Lib/test/test_importlib/test_threaded_import.py
@@ -17,7 +17,7 @@
 from test.support import verbose
 from test.support.import_helper import forget, mock_register_at_fork
 from test.support.os_helper import (TESTFN, unlink, rmtree)
-from test.support import script_helper, threading_helper, requires_gil_enabled
+from test.support import script_helper, threading_helper
 
 threading_helper.requires_working_threading(module=True)
 
@@ -248,9 +248,6 @@ def test_concurrent_futures_circular_import(self):
                           'partial', 'cfimport.py')
         script_helper.assert_python_ok(fn)
 
-    # gh-118727 and gh-118729: pool_in_threads.py may crash in free-threaded
-    # builds, which can hang the Tsan test so temporarily skip it for now.
-    @requires_gil_enabled("gh-118727: test may crash in free-threaded builds")
     def test_multiprocessing_pool_circular_import(self):
         # Regression test for bpo-41567
         fn = os.path.join(os.path.dirname(__file__),
diff --git a/Lib/test/test_importlib/test_util.py b/Lib/test/test_importlib/test_util.py
index 668042782bdc5f..3dfd775c11573c 100644
--- a/Lib/test/test_importlib/test_util.py
+++ b/Lib/test/test_importlib/test_util.py
@@ -6,12 +6,14 @@
 importlib_util = util.import_importlib('importlib.util')
 
 import importlib.util
+from importlib import _bootstrap_external
 import os
 import pathlib
 import re
 import string
 import sys
 from test import support
+from test.support import os_helper
 import textwrap
 import types
 import unittest
@@ -634,7 +636,7 @@ def test_magic_number(self):
         # stakeholders such as OS package maintainers must be notified
         # in advance. Such exceptional releases will then require an
         # adjustment to this test case.
-        EXPECTED_MAGIC_NUMBER = 3495
+        EXPECTED_MAGIC_NUMBER = 3571
         actual = int.from_bytes(importlib.util.MAGIC_NUMBER[:2], 'little')
 
         msg = (
@@ -775,5 +777,35 @@ def test_complete_multi_phase_init_module(self):
             self.run_with_own_gil(script)
 
 
+class MiscTests(unittest.TestCase):
+    def test_atomic_write_should_notice_incomplete_writes(self):
+        import _pyio
+
+        oldwrite = os.write
+        seen_write = False
+
+        truncate_at_length = 100
+
+        # Emulate an os.write that only writes partial data.
+        def write(fd, data):
+            nonlocal seen_write
+            seen_write = True
+            return oldwrite(fd, data[:truncate_at_length])
+
+        # Need to patch _io to be _pyio, so that io.FileIO is affected by the
+        # os.write patch.
+        with (support.swap_attr(_bootstrap_external, '_io', _pyio),
+              support.swap_attr(os, 'write', write)):
+            with self.assertRaises(OSError):
+                # Make sure we write something longer than the point where we
+                # truncate.
+                content = b'x' * (truncate_at_length * 2)
+                _bootstrap_external._write_atomic(os_helper.TESTFN, content)
+        assert seen_write
+
+        with self.assertRaises(OSError):
+            os.stat(support.os_helper.TESTFN) # Check that the file did not get written.
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_inspect/inspect_fodder2.py b/Lib/test/test_inspect/inspect_fodder2.py
index bb9d3e88cfbee1..43fda6622537fc 100644
--- a/Lib/test/test_inspect/inspect_fodder2.py
+++ b/Lib/test/test_inspect/inspect_fodder2.py
@@ -315,3 +315,57 @@ def g():
 class ClassWithCodeObject:
     import sys
     code = sys._getframe(0).f_code
+
+import enum
+
+# line 321
+class enum322(enum.Enum):
+    A = 'a'
+
+# line 325
+class enum326(enum.IntEnum):
+    A = 1
+
+# line 329
+class flag330(enum.Flag):
+    A = 1
+
+# line 333
+class flag334(enum.IntFlag):
+    A = 1
+
+# line 337
+simple_enum338 = enum.Enum('simple_enum338', 'A')
+simple_enum339 = enum.IntEnum('simple_enum339', 'A')
+simple_flag340 = enum.Flag('simple_flag340', 'A')
+simple_flag341 = enum.IntFlag('simple_flag341', 'A')
+
+import typing
+
+# line 345
+class nt346(typing.NamedTuple):
+    x: int
+    y: int
+
+# line 350
+nt351 = typing.NamedTuple('nt351', (('x', int), ('y', int)))
+
+# line 353
+class td354(typing.TypedDict):
+    x: int
+    y: int
+
+# line 358
+td359 = typing.TypedDict('td359', (('x', int), ('y', int)))
+
+import dataclasses
+
+# line 363
+@dataclasses.dataclass
+class dc364:
+    x: int
+    y: int
+
+# line 369
+dc370 = dataclasses.make_dataclass('dc370', (('x', int), ('y', int)))
+dc371 = dataclasses.make_dataclass('dc370', (('x', int), ('y', int)), module=__name__)
diff --git a/Lib/test/test_inspect/inspect_stringized_annotations_pep695.py b/Lib/test/test_inspect/inspect_stringized_annotations_pep695.py
new file mode 100644
index 00000000000000..39bfe2edb03f30
--- /dev/null
+++ b/Lib/test/test_inspect/inspect_stringized_annotations_pep695.py
@@ -0,0 +1,87 @@
+from __future__ import annotations
+from typing import Callable, Unpack
+
+
+class A[T, *Ts, **P]:
+    x: T
+    y: tuple[*Ts]
+    z: Callable[P, str]
+
+
+class B[T, *Ts, **P]:
+    T = int
+    Ts = str
+    P = bytes
+    x: T
+    y: Ts
+    z: P
+
+
+Eggs = int
+Spam = str
+
+
+class C[Eggs, **Spam]:
+    x: Eggs
+    y: Spam
+
+
+def generic_function[T, *Ts, **P](
+    x: T, *y: Unpack[Ts], z: P.args, zz: P.kwargs
+) -> None: ...
+
+
+def generic_function_2[Eggs, **Spam](x: Eggs, y: Spam): pass
+
+
+class D:
+    Foo = int
+    Bar = str
+
+    def generic_method[Foo, **Bar](
+        self, x: Foo, y: Bar
+    ) -> None: ...
+
+    def generic_method_2[Eggs, **Spam](self, x: Eggs, y: Spam): pass
+
+
+# Eggs is `int` in globals, a TypeVar in type_params, and `str` in locals:
+class E[Eggs]:
+    Eggs = str
+    x: Eggs
+
+
+
+def nested():
+    from types import SimpleNamespace
+    from inspect import get_annotations
+
+    Eggs = bytes
+    Spam = memoryview
+
+
+    class F[Eggs, **Spam]:
+        x: Eggs
+        y: Spam
+
+        def generic_method[Eggs, **Spam](self, x: Eggs, y: Spam): pass
+
+
+    def generic_function[Eggs, **Spam](x: Eggs, y: Spam): pass
+
+
+    # Eggs is `int` in globals, `bytes` in the function scope,
+    # a TypeVar in the type_params, and `str` in locals:
+    class G[Eggs]:
+        Eggs = str
+        x: Eggs
+
+
+    return SimpleNamespace(
+        F=F,
+        F_annotations=get_annotations(F, eval_str=True),
+        F_meth_annotations=get_annotations(F.generic_method, eval_str=True),
+        G_annotations=get_annotations(G, eval_str=True),
+        generic_func=generic_function,
+        generic_func_annotations=get_annotations(generic_function, eval_str=True)
+    )
diff --git a/Lib/test/test_inspect/test_inspect.py b/Lib/test/test_inspect/test_inspect.py
index 82e466e978624f..f30dc7affda11a 100644
--- a/Lib/test/test_inspect/test_inspect.py
+++ b/Lib/test/test_inspect/test_inspect.py
@@ -22,6 +22,7 @@
 import types
 import tempfile
 import textwrap
+from typing import Unpack
 import unicodedata
 import unittest
 import unittest.mock
@@ -34,7 +35,7 @@
 except ImportError:
     ThreadPoolExecutor = None
 
-from test.support import cpython_only, import_helper
+from test.support import cpython_only, import_helper, suppress_immortalization
 from test.support import MISSING_C_DOCSTRINGS, ALWAYS_EQ
 from test.support.import_helper import DirsOnSysPath, ready_to_import
 from test.support.os_helper import TESTFN, temp_cwd
@@ -47,15 +48,15 @@
 from test.test_inspect import inspect_stock_annotations
 from test.test_inspect import inspect_stringized_annotations
 from test.test_inspect import inspect_stringized_annotations_2
+from test.test_inspect import inspect_stringized_annotations_pep695
 
 
 # Functions tested in this suite:
 # ismodule, isclass, ismethod, isfunction, istraceback, isframe, iscode,
 # isbuiltin, isroutine, isgenerator, isgeneratorfunction, getmembers,
 # getdoc, getfile, getmodule, getsourcefile, getcomments, getsource,
-# getclasstree, getargvalues, formatargvalues,
-# currentframe, stack, trace, isdatadescriptor,
-# ismethodwrapper
+# getclasstree, getargvalues, formatargvalues, currentframe,
+# stack, trace, ismethoddescriptor, isdatadescriptor, ismethodwrapper
 
 # NOTE: There are some additional tests relating to interaction with
 #       zipimport in the test_zipimport_support test module.
@@ -177,6 +178,7 @@ def test_excluding_predicates(self):
         self.istest(inspect.ismethod, 'git.argue')
         self.istest(inspect.ismethod, 'mod.custom_method')
         self.istest(inspect.ismodule, 'mod')
+        self.istest(inspect.ismethoddescriptor, 'int.__add__')
         self.istest(inspect.isdatadescriptor, 'collections.defaultdict.default_factory')
         self.istest(inspect.isgenerator, '(x for x in range(2))')
         self.istest(inspect.isgeneratorfunction, 'generator_function_example')
@@ -235,6 +237,7 @@ class PMClass:
                     gen_coroutine_function_example))))
         self.assertFalse(inspect.iscoroutinefunction(gen_coro_pmi))
         self.assertFalse(inspect.iscoroutinefunction(gen_coro_pmc))
+        self.assertFalse(inspect.iscoroutinefunction(inspect))
         self.assertFalse(inspect.iscoroutine(gen_coro))
 
         self.assertTrue(
@@ -402,6 +405,8 @@ def test_isroutine(self):
         self.assertFalse(inspect.isroutine(type))
         self.assertFalse(inspect.isroutine(int))
         self.assertFalse(inspect.isroutine(type('some_class', (), {})))
+        # partial
+        self.assertFalse(inspect.isroutine(functools.partial(mod.spam)))
 
     def test_isclass(self):
         self.istest(inspect.isclass, 'mod.StupidGit')
@@ -768,6 +773,7 @@ def test_getfile_builtin_function_or_method(self):
             inspect.getfile(list.append)
         self.assertIn('expected, got', str(e_append.exception))
 
+    @suppress_immortalization()
     def test_getfile_class_without_module(self):
         class CM(type):
             @property
@@ -818,7 +824,7 @@ def test_getsource_on_code_object(self):
         self.assertSourceEqual(mod.eggs.__code__, 12, 18)
 
     def test_getsource_on_generated_class(self):
-        A = type('A', (), {})
+        A = type('A', (unittest.TestCase,), {})
         self.assertEqual(inspect.getsourcefile(A), __file__)
         self.assertEqual(inspect.getfile(A), __file__)
         self.assertIs(inspect.getmodule(A), sys.modules[__name__])
@@ -832,7 +838,49 @@ class C:
             nonlocal __firstlineno__
         self.assertRaises(OSError, inspect.getsource, C)
 
+class TestGetsourceStdlib(unittest.TestCase):
+    # Test Python implementations of the stdlib modules
+
+    def test_getsource_stdlib_collections_abc(self):
+        import collections.abc
+        lines, lineno = inspect.getsourcelines(collections.abc.Sequence)
+        self.assertEqual(lines[0], 'class Sequence(Reversible, Collection):\n')
+        src = inspect.getsource(collections.abc.Sequence)
+        self.assertEqual(src.splitlines(True), lines)
+
+    def test_getsource_stdlib_tomllib(self):
+        import tomllib
+        self.assertRaises(OSError, inspect.getsource, tomllib.TOMLDecodeError)
+        self.assertRaises(OSError, inspect.getsourcelines, tomllib.TOMLDecodeError)
+
+    def test_getsource_stdlib_abc(self):
+        # Pure Python implementation
+        abc = import_helper.import_fresh_module('abc', blocked=['_abc'])
+        with support.swap_item(sys.modules, 'abc', abc):
+            self.assertRaises(OSError, inspect.getsource, abc.ABCMeta)
+            self.assertRaises(OSError, inspect.getsourcelines, abc.ABCMeta)
+        # With C acceleration
+        import abc
+        try:
+            src = inspect.getsource(abc.ABCMeta)
+            lines, lineno = inspect.getsourcelines(abc.ABCMeta)
+        except OSError:
+            pass
+        else:
+            self.assertEqual(lines[0], '    class ABCMeta(type):\n')
+            self.assertEqual(src.splitlines(True), lines)
+
+    def test_getsource_stdlib_decimal(self):
+        # Pure Python implementation
+        decimal = import_helper.import_fresh_module('decimal', blocked=['_decimal'])
+        with support.swap_item(sys.modules, 'decimal', decimal):
+            src = inspect.getsource(decimal.Decimal)
+            lines, lineno = inspect.getsourcelines(decimal.Decimal)
+        self.assertEqual(lines[0], 'class Decimal(object):\n')
+        self.assertEqual(src.splitlines(True), lines)
+
 class TestGetsourceInteractive(unittest.TestCase):
+    @support.force_not_colorized
     def test_getclasses_interactive(self):
         # bpo-44648: simulate a REPL session;
         # there is no `__file__` in the __main__ module
@@ -926,6 +974,29 @@ def test_anonymous(self):
         # as argument to another function.
         self.assertSourceEqual(mod2.anonymous, 55, 55)
 
+    def test_enum(self):
+        self.assertSourceEqual(mod2.enum322, 322, 323)
+        self.assertSourceEqual(mod2.enum326, 326, 327)
+        self.assertSourceEqual(mod2.flag330, 330, 331)
+        self.assertSourceEqual(mod2.flag334, 334, 335)
+        self.assertRaises(OSError, inspect.getsource, mod2.simple_enum338)
+        self.assertRaises(OSError, inspect.getsource, mod2.simple_enum339)
+        self.assertRaises(OSError, inspect.getsource, mod2.simple_flag340)
+        self.assertRaises(OSError, inspect.getsource, mod2.simple_flag341)
+
+    def test_namedtuple(self):
+        self.assertSourceEqual(mod2.nt346, 346, 348)
+        self.assertRaises(OSError, inspect.getsource, mod2.nt351)
+
+    def test_typeddict(self):
+        self.assertSourceEqual(mod2.td354, 354, 356)
+        self.assertRaises(OSError, inspect.getsource, mod2.td359)
+
+    def test_dataclass(self):
+        self.assertSourceEqual(mod2.dc364, 364, 367)
+        self.assertRaises(OSError, inspect.getsource, mod2.dc370)
+        self.assertRaises(OSError, inspect.getsource, mod2.dc371)
+
 class TestBlockComments(GetSourceBase):
     fodderModule = mod
 
@@ -989,7 +1060,7 @@ def test_findsource_without_filename(self):
             self.assertRaises(IOError, inspect.findsource, co)
             self.assertRaises(IOError, inspect.getsource, co)
 
-    def test_findsource_with_out_of_bounds_lineno(self):
+    def test_findsource_on_func_with_out_of_bounds_lineno(self):
         mod_len = len(inspect.getsource(mod))
         src = '\n' * 2* mod_len + "def f(): pass"
         co = compile(src, mod.__file__, "exec")
@@ -997,9 +1068,20 @@ def test_findsource_with_out_of_bounds_lineno(self):
         eval(co, g, l)
         func = l['f']
         self.assertEqual(func.__code__.co_firstlineno, 1+2*mod_len)
-        with self.assertRaisesRegex(IOError, "lineno is out of bounds"):
+        with self.assertRaisesRegex(OSError, "lineno is out of bounds"):
             inspect.findsource(func)
 
+    def test_findsource_on_class_with_out_of_bounds_lineno(self):
+        mod_len = len(inspect.getsource(mod))
+        src = '\n' * 2* mod_len + "class A: pass"
+        co = compile(src, mod.__file__, "exec")
+        g, l = {'__name__': mod.__name__}, {}
+        eval(co, g, l)
+        cls = l['A']
+        self.assertEqual(cls.__firstlineno__, 1+2*mod_len)
+        with self.assertRaisesRegex(OSError, "lineno is out of bounds"):
+            inspect.findsource(cls)
+
     def test_getsource_on_method(self):
         self.assertSourceEqual(mod2.ClassWithMethod.method, 118, 119)
 
@@ -1547,6 +1629,56 @@ def f(self):
         self.assertIn(('f', b.f), inspect.getmembers(b))
         self.assertIn(('f', b.f), inspect.getmembers(b, inspect.ismethod))
 
+    def test_getmembers_custom_dir(self):
+        class CorrectDir:
+            def __init__(self, attr):
+                self.attr = attr
+            def method(self):
+                return self.attr + 1
+            def __dir__(self):
+                return ['attr', 'method']
+
+        cd = CorrectDir(5)
+        self.assertEqual(inspect.getmembers(cd), [
+            ('attr', 5),
+            ('method', cd.method),
+        ])
+        self.assertEqual(inspect.getmembers(cd, inspect.ismethod), [
+            ('method', cd.method),
+        ])
+
+    def test_getmembers_custom_broken_dir(self):
+        # inspect.getmembers calls `dir()` on the passed object inside.
+        # if `__dir__` mentions some non-existent attribute,
+        # we still need to return others correctly.
+        class BrokenDir:
+            existing = 1
+            def method(self):
+                return self.existing + 1
+            def __dir__(self):
+                return ['method', 'missing', 'existing']
+
+        bd = BrokenDir()
+        self.assertEqual(inspect.getmembers(bd), [
+            ('existing', 1),
+            ('method', bd.method),
+        ])
+        self.assertEqual(inspect.getmembers(bd, inspect.ismethod), [
+            ('method', bd.method),
+        ])
+
+    def test_getmembers_custom_duplicated_dir(self):
+        # Duplicates in `__dir__` must not fail and return just one result.
+        class DuplicatedDir:
+            attr = 1
+            def __dir__(self):
+                return ['attr', 'attr']
+
+        dd = DuplicatedDir()
+        self.assertEqual(inspect.getmembers(dd), [
+            ('attr', 1),
+        ])
+
     def test_getmembers_VirtualAttribute(self):
         class M(type):
             def __getattr__(cls, name):
@@ -1690,6 +1822,117 @@ def wrapper(a, b):
         self.assertEqual(inspect.get_annotations(isa.MyClassWithLocalAnnotations), {'x': 'mytype'})
         self.assertEqual(inspect.get_annotations(isa.MyClassWithLocalAnnotations, eval_str=True), {'x': int})
 
+    def test_pep695_generic_class_with_future_annotations(self):
+        ann_module695 = inspect_stringized_annotations_pep695
+        A_annotations = inspect.get_annotations(ann_module695.A, eval_str=True)
+        A_type_params = ann_module695.A.__type_params__
+        self.assertIs(A_annotations["x"], A_type_params[0])
+        self.assertEqual(A_annotations["y"].__args__[0], Unpack[A_type_params[1]])
+        self.assertIs(A_annotations["z"].__args__[0], A_type_params[2])
+
+    def test_pep695_generic_class_with_future_annotations_and_local_shadowing(self):
+        B_annotations = inspect.get_annotations(
+            inspect_stringized_annotations_pep695.B, eval_str=True
+        )
+        self.assertEqual(B_annotations, {"x": int, "y": str, "z": bytes})
+
+    def test_pep695_generic_class_with_future_annotations_name_clash_with_global_vars(self):
+        ann_module695 = inspect_stringized_annotations_pep695
+        C_annotations = inspect.get_annotations(ann_module695.C, eval_str=True)
+        self.assertEqual(
+            set(C_annotations.values()),
+            set(ann_module695.C.__type_params__)
+        )
+
+    def test_pep_695_generic_function_with_future_annotations(self):
+        ann_module695 = inspect_stringized_annotations_pep695
+        generic_func_annotations = inspect.get_annotations(
+            ann_module695.generic_function, eval_str=True
+        )
+        func_t_params = ann_module695.generic_function.__type_params__
+        self.assertEqual(
+            generic_func_annotations.keys(), {"x", "y", "z", "zz", "return"}
+        )
+        self.assertIs(generic_func_annotations["x"], func_t_params[0])
+        self.assertEqual(generic_func_annotations["y"], Unpack[func_t_params[1]])
+        self.assertIs(generic_func_annotations["z"].__origin__, func_t_params[2])
+        self.assertIs(generic_func_annotations["zz"].__origin__, func_t_params[2])
+
+    def test_pep_695_generic_function_with_future_annotations_name_clash_with_global_vars(self):
+        self.assertEqual(
+            set(
+                inspect.get_annotations(
+                    inspect_stringized_annotations_pep695.generic_function_2,
+                    eval_str=True
+                ).values()
+            ),
+            set(
+                inspect_stringized_annotations_pep695.generic_function_2.__type_params__
+            )
+        )
+
+    def test_pep_695_generic_method_with_future_annotations(self):
+        ann_module695 = inspect_stringized_annotations_pep695
+        generic_method_annotations = inspect.get_annotations(
+            ann_module695.D.generic_method, eval_str=True
+        )
+        params = {
+            param.__name__: param
+            for param in ann_module695.D.generic_method.__type_params__
+        }
+        self.assertEqual(
+            generic_method_annotations,
+            {"x": params["Foo"], "y": params["Bar"], "return": None}
+        )
+
+    def test_pep_695_generic_method_with_future_annotations_name_clash_with_global_vars(self):
+        self.assertEqual(
+            set(
+                inspect.get_annotations(
+                    inspect_stringized_annotations_pep695.D.generic_method_2,
+                    eval_str=True
+                ).values()
+            ),
+            set(
+                inspect_stringized_annotations_pep695.D.generic_method_2.__type_params__
+            )
+        )
+
+    def test_pep_695_generic_method_with_future_annotations_name_clash_with_global_and_local_vars(self):
+        self.assertEqual(
+            inspect.get_annotations(
+                inspect_stringized_annotations_pep695.E, eval_str=True
+            ),
+            {"x": str},
+        )
+
+    def test_pep_695_generics_with_future_annotations_nested_in_function(self):
+        results = inspect_stringized_annotations_pep695.nested()
+
+        self.assertEqual(
+            set(results.F_annotations.values()),
+            set(results.F.__type_params__)
+        )
+        self.assertEqual(
+            set(results.F_meth_annotations.values()),
+            set(results.F.generic_method.__type_params__)
+        )
+        self.assertNotEqual(
+            set(results.F_meth_annotations.values()),
+            set(results.F.__type_params__)
+        )
+        self.assertEqual(
+            set(results.F_meth_annotations.values()).intersection(results.F.__type_params__),
+            set()
+        )
+
+        self.assertEqual(results.G_annotations, {"x": str})
+
+        self.assertEqual(
+            set(results.generic_func_annotations.values()),
+            set(results.generic_func.__type_params__)
+        )
+
 
 class TestFormatAnnotation(unittest.TestCase):
     def test_typing_replacement(self):
@@ -1698,6 +1941,122 @@ def test_typing_replacement(self):
         self.assertEqual(inspect.formatannotation(ann1), 'Union[List[testModule.typing.A], int]')
 
 
+class TestIsMethodDescriptor(unittest.TestCase):
+
+    def test_custom_descriptors(self):
+        class MethodDescriptor:
+            def __get__(self, *_): pass
+        class MethodDescriptorSub(MethodDescriptor):
+            pass
+        class DataDescriptorWithNoGet:
+            def __set__(self, *_): pass
+        class DataDescriptorWithGetSet:
+            def __get__(self, *_): pass
+            def __set__(self, *_): pass
+        class DataDescriptorWithGetDelete:
+            def __get__(self, *_): pass
+            def __delete__(self, *_): pass
+        class DataDescriptorSub(DataDescriptorWithNoGet,
+                                DataDescriptorWithGetDelete):
+            pass
+
+        # Custom method descriptors:
+        self.assertTrue(
+            inspect.ismethoddescriptor(MethodDescriptor()),
+            '__get__ and no __set__/__delete__ => method descriptor')
+        self.assertTrue(
+            inspect.ismethoddescriptor(MethodDescriptorSub()),
+            '__get__ (inherited) and no __set__/__delete__'
+            ' => method descriptor')
+
+        # Custom data descriptors:
+        self.assertFalse(
+            inspect.ismethoddescriptor(DataDescriptorWithNoGet()),
+            '__set__ (and no __get__) => not a method descriptor')
+        self.assertFalse(
+            inspect.ismethoddescriptor(DataDescriptorWithGetSet()),
+            '__get__ and __set__ => not a method descriptor')
+        self.assertFalse(
+            inspect.ismethoddescriptor(DataDescriptorWithGetDelete()),
+            '__get__ and __delete__ => not a method descriptor')
+        self.assertFalse(
+            inspect.ismethoddescriptor(DataDescriptorSub()),
+            '__get__, __set__ and __delete__ => not a method descriptor')
+
+        # Classes of descriptors (are *not* descriptors themselves):
+        self.assertFalse(inspect.ismethoddescriptor(MethodDescriptor))
+        self.assertFalse(inspect.ismethoddescriptor(MethodDescriptorSub))
+        self.assertFalse(inspect.ismethoddescriptor(DataDescriptorSub))
+
+    def test_builtin_descriptors(self):
+        builtin_slot_wrapper = int.__add__  # This one is mentioned in docs.
+        class Owner:
+            def instance_method(self): pass
+            @classmethod
+            def class_method(cls): pass
+            @staticmethod
+            def static_method(): pass
+            @property
+            def a_property(self): pass
+        class Slotermeyer:
+            __slots__ = 'a_slot',
+        def function():
+            pass
+        a_lambda = lambda: None
+
+        # Example builtin method descriptors:
+        self.assertTrue(
+            inspect.ismethoddescriptor(builtin_slot_wrapper),
+            'a builtin slot wrapper is a method descriptor')
+        self.assertTrue(
+            inspect.ismethoddescriptor(Owner.__dict__['class_method']),
+            'a classmethod object is a method descriptor')
+        self.assertTrue(
+            inspect.ismethoddescriptor(Owner.__dict__['static_method']),
+            'a staticmethod object is a method descriptor')
+
+        # Example builtin data descriptors:
+        self.assertFalse(
+            inspect.ismethoddescriptor(Owner.__dict__['a_property']),
+            'a property is not a method descriptor')
+        self.assertFalse(
+            inspect.ismethoddescriptor(Slotermeyer.__dict__['a_slot']),
+            'a slot is not a method descriptor')
+
+        # `types.MethodType`/`types.FunctionType` instances (they *are*
+        # method descriptors, but `ismethoddescriptor()` explicitly
+        # excludes them):
+        self.assertFalse(inspect.ismethoddescriptor(Owner().instance_method))
+        self.assertFalse(inspect.ismethoddescriptor(Owner().class_method))
+        self.assertFalse(inspect.ismethoddescriptor(Owner().static_method))
+        self.assertFalse(inspect.ismethoddescriptor(Owner.instance_method))
+        self.assertFalse(inspect.ismethoddescriptor(Owner.class_method))
+        self.assertFalse(inspect.ismethoddescriptor(Owner.static_method))
+        self.assertFalse(inspect.ismethoddescriptor(function))
+        self.assertFalse(inspect.ismethoddescriptor(a_lambda))
+        self.assertFalse(inspect.ismethoddescriptor(functools.partial(function)))
+
+    def test_descriptor_being_a_class(self):
+        class MethodDescriptorMeta(type):
+            def __get__(self, *_): pass
+        class ClassBeingMethodDescriptor(metaclass=MethodDescriptorMeta):
+            pass
+        # `ClassBeingMethodDescriptor` itself *is* a method descriptor,
+        # but it is *also* a class, and `ismethoddescriptor()` explicitly
+        # excludes classes.
+        self.assertFalse(
+            inspect.ismethoddescriptor(ClassBeingMethodDescriptor),
+            'classes (instances of type) are explicitly excluded')
+
+    def test_non_descriptors(self):
+        class Test:
+            pass
+        self.assertFalse(inspect.ismethoddescriptor(Test()))
+        self.assertFalse(inspect.ismethoddescriptor(Test))
+        self.assertFalse(inspect.ismethoddescriptor([42]))
+        self.assertFalse(inspect.ismethoddescriptor(42))
+
+
 class TestIsDataDescriptor(unittest.TestCase):
 
     def test_custom_descriptors(self):
@@ -1802,6 +2161,19 @@ def g(local_ref):
                                        builtin_vars, unbound_names)
         self.assertEqual(inspect.getclosurevars(C().f(_arg)), expected)
 
+    def test_attribute_same_name_as_global_var(self):
+        class C:
+            _global_ref = object()
+        def f():
+            print(C._global_ref, _global_ref)
+        nonlocal_vars = {"C": C}
+        global_vars = {"_global_ref": _global_ref}
+        builtin_vars = {"print": print}
+        unbound_names = {"_global_ref"}
+        expected = inspect.ClosureVars(nonlocal_vars, global_vars,
+                                       builtin_vars, unbound_names)
+        self.assertEqual(inspect.getclosurevars(f), expected)
+
     def test_nonlocal_vars(self):
         # More complex tests of nonlocal resolution
         def _nonlocal_vars(f):
@@ -2430,6 +2802,7 @@ def __getattribute__(self, attr):
 
         self.assertFalse(test.called)
 
+    @suppress_immortalization()
     def test_cache_does_not_cause_classes_to_persist(self):
         # regression test for gh-118013:
         # check that the internal _shadowed_dict cache does not cause
@@ -3642,10 +4015,12 @@ class C(metaclass=CM):
                 def __init__(self, b):
                     pass
 
-            self.assertEqual(C(1), (2, 1))
-            self.assertEqual(self.signature(C),
-                            ((('a', ..., ..., "positional_or_keyword"),),
-                            ...))
+            with self.assertWarns(FutureWarning):
+                self.assertEqual(C(1), (2, 1))
+            with self.assertWarns(FutureWarning):
+                self.assertEqual(self.signature(C),
+                                ((('a', ..., ..., "positional_or_keyword"),),
+                                ...))
 
         with self.subTest('partialmethod'):
             class CM(type):
@@ -3793,10 +4168,12 @@ class C:
             class C:
                 __init__ = functools.partial(lambda x, a: None, 2)
 
-            C(1)  # does not raise
-            self.assertEqual(self.signature(C),
-                            ((('a', ..., ..., "positional_or_keyword"),),
-                            ...))
+            with self.assertWarns(FutureWarning):
+                C(1)  # does not raise
+            with self.assertWarns(FutureWarning):
+                self.assertEqual(self.signature(C),
+                                ((('a', ..., ..., "positional_or_keyword"),),
+                                ...))
 
         with self.subTest('partialmethod'):
             class C:
@@ -4051,10 +4428,13 @@ class C:
             class C:
                 __call__ = functools.partial(lambda x, a: (x, a), 2)
 
-            self.assertEqual(C()(1), (2, 1))
-            self.assertEqual(self.signature(C()),
-                            ((('a', ..., ..., "positional_or_keyword"),),
-                            ...))
+            c = C()
+            with self.assertWarns(FutureWarning):
+                self.assertEqual(c(1), (2, 1))
+            with self.assertWarns(FutureWarning):
+                self.assertEqual(self.signature(c),
+                                ((('a', ..., ..., "positional_or_keyword"),),
+                                ...))
 
         with self.subTest('partialmethod'):
             class C:
@@ -5087,15 +5467,30 @@ def test(a_po, b_po, c_po=3, /, foo=42, *, bar=50, **kwargs):
         self.assertEqual(self.call(test, 1, 2, foo=4, bar=5),
                          (1, 2, 3, 4, 5, {}))
 
-        with self.assertRaisesRegex(TypeError, "but was passed as a keyword"):
-            self.call(test, 1, 2, foo=4, bar=5, c_po=10)
+        self.assertEqual(self.call(test, 1, 2, foo=4, bar=5, c_po=10),
+                         (1, 2, 3, 4, 5, {'c_po': 10}))
+
+        self.assertEqual(self.call(test, 1, 2, 30, c_po=31, foo=4, bar=5),
+                         (1, 2, 30, 4, 5, {'c_po': 31}))
 
-        with self.assertRaisesRegex(TypeError, "parameter is positional only"):
-            self.call(test, 1, 2, c_po=4)
+        self.assertEqual(self.call(test, 1, 2, 30, foo=4, bar=5, c_po=31),
+                         (1, 2, 30, 4, 5, {'c_po': 31}))
 
-        with self.assertRaisesRegex(TypeError, "parameter is positional only"):
+        self.assertEqual(self.call(test, 1, 2, c_po=4),
+                         (1, 2, 3, 42, 50, {'c_po': 4}))
+
+        with self.assertRaisesRegex(TypeError, "missing 2 required positional arguments"):
             self.call(test, a_po=1, b_po=2)
 
+        def without_var_kwargs(c_po=3, d_po=4, /):
+            return c_po, d_po
+
+        with self.assertRaisesRegex(
+            TypeError,
+            "positional-only arguments passed as keyword arguments: 'c_po, d_po'",
+        ):
+            self.call(without_var_kwargs, c_po=33, d_po=44)
+
     def test_signature_bind_with_self_arg(self):
         # Issue #17071: one of the parameters is named "self
         def test(a, self, b):
diff --git a/Lib/test/test_interpreters/__init__.py b/Lib/test/test_interpreters/__init__.py
index 52ff553f60d0d7..e3d189c4efcd27 100644
--- a/Lib/test/test_interpreters/__init__.py
+++ b/Lib/test/test_interpreters/__init__.py
@@ -1,6 +1,9 @@
 import os
 from test.support import load_package_tests, Py_GIL_DISABLED
+import unittest
 
-if not Py_GIL_DISABLED:
-    def load_tests(*args):
-        return load_package_tests(os.path.dirname(__file__), *args)
+if Py_GIL_DISABLED:
+    raise unittest.SkipTest("GIL disabled")
+
+def load_tests(*args):
+    return load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_interpreters/test_api.py b/Lib/test/test_interpreters/test_api.py
index 719c1c721cad7c..61beb317c37975 100644
--- a/Lib/test/test_interpreters/test_api.py
+++ b/Lib/test/test_interpreters/test_api.py
@@ -55,6 +55,9 @@ def test_in_main(self):
         self.assertIsInstance(interp, interpreters.Interpreter)
         self.assertIn(interp, interpreters.list_all())
 
+        # GH-126221: Passing an invalid Unicode character used to cause a SystemError
+        self.assertRaises(UnicodeEncodeError, _interpreters.create, '\udc80')
+
     def test_in_thread(self):
         lock = threading.Lock()
         interp = None
@@ -1647,6 +1650,10 @@ def test_set___main___attrs(self):
             self.assertIs(after2, None)
             self.assertEqual(after3.type.__name__, 'AssertionError')
 
+            with self.assertRaises(ValueError):
+                # GH-127165: Embedded NULL characters broke the lookup
+                _interpreters.set___main___attrs(interpid, {"\x00": 1})
+
         with self.subTest('from C-API'):
             with self.interpreter_from_capi() as interpid:
                 with self.assertRaisesRegex(InterpreterError, 'unrecognized'):
diff --git a/Lib/test/test_interpreters/test_channels.py b/Lib/test/test_interpreters/test_channels.py
index 68cc45d1a5e09f..eada18f99d04db 100644
--- a/Lib/test/test_interpreters/test_channels.py
+++ b/Lib/test/test_interpreters/test_channels.py
@@ -48,6 +48,7 @@ def test_list_all(self):
         self.assertEqual(after, created)
 
     def test_shareable(self):
+        interp = interpreters.create()
         rch, sch = channels.create()
 
         self.assertTrue(
@@ -60,8 +61,25 @@ def test_shareable(self):
         rch2 = rch.recv()
         sch2 = rch.recv()
 
+        interp.prepare_main(rch=rch, sch=sch)
+        sch.send_nowait(rch)
+        sch.send_nowait(sch)
+        interp.exec(dedent("""
+            rch2 = rch.recv()
+            sch2 = rch.recv()
+            assert rch2 == rch
+            assert sch2 == sch
+
+            sch.send_nowait(rch2)
+            sch.send_nowait(sch2)
+            """))
+        rch3 = rch.recv()
+        sch3 = rch.recv()
+
         self.assertEqual(rch2, rch)
         self.assertEqual(sch2, sch)
+        self.assertEqual(rch3, rch)
+        self.assertEqual(sch3, sch)
 
     def test_is_closed(self):
         rch, sch = channels.create()
@@ -354,6 +372,228 @@ def test_send_buffer_nowait(self):
         obj[4:8] = b'ham.'
         self.assertEqual(obj, buf)
 
+    def test_send_cleared_with_subinterpreter(self):
+        def common(rch, sch, unbound=None, presize=0):
+            if not unbound:
+                extraargs = ''
+            elif unbound is channels.UNBOUND:
+                extraargs = ', unbound=channels.UNBOUND'
+            elif unbound is channels.UNBOUND_ERROR:
+                extraargs = ', unbound=channels.UNBOUND_ERROR'
+            elif unbound is channels.UNBOUND_REMOVE:
+                extraargs = ', unbound=channels.UNBOUND_REMOVE'
+            else:
+                raise NotImplementedError(repr(unbound))
+            interp = interpreters.create()
+
+            _run_output(interp, dedent(f"""
+                from test.support.interpreters import channels
+                sch = channels.SendChannel({sch.id})
+                obj1 = b'spam'
+                obj2 = b'eggs'
+                sch.send_nowait(obj1{extraargs})
+                sch.send_nowait(obj2{extraargs})
+                """))
+            self.assertEqual(
+                _channels.get_count(rch.id),
+                presize + 2,
+            )
+
+            if presize == 0:
+                obj1 = rch.recv()
+                self.assertEqual(obj1, b'spam')
+                self.assertEqual(
+                    _channels.get_count(rch.id),
+                    presize + 1,
+                )
+
+            return interp
+
+        with self.subTest('default'):  # UNBOUND
+            rch, sch = channels.create()
+            interp = common(rch, sch)
+            del interp
+            self.assertEqual(_channels.get_count(rch.id), 1)
+            obj1 = rch.recv()
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            self.assertIs(obj1, channels.UNBOUND)
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            with self.assertRaises(channels.ChannelEmptyError):
+                rch.recv_nowait()
+
+        with self.subTest('UNBOUND'):
+            rch, sch = channels.create()
+            interp = common(rch, sch, channels.UNBOUND)
+            del interp
+            self.assertEqual(_channels.get_count(rch.id), 1)
+            obj1 = rch.recv()
+            self.assertIs(obj1, channels.UNBOUND)
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            with self.assertRaises(channels.ChannelEmptyError):
+                rch.recv_nowait()
+
+        with self.subTest('UNBOUND_ERROR'):
+            rch, sch = channels.create()
+            interp = common(rch, sch, channels.UNBOUND_ERROR)
+
+            del interp
+            self.assertEqual(_channels.get_count(rch.id), 1)
+            with self.assertRaises(channels.ItemInterpreterDestroyed):
+                rch.recv()
+
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            with self.assertRaises(channels.ChannelEmptyError):
+                rch.recv_nowait()
+
+        with self.subTest('UNBOUND_REMOVE'):
+            rch, sch = channels.create()
+
+            interp = common(rch, sch, channels.UNBOUND_REMOVE)
+            del interp
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            with self.assertRaises(channels.ChannelEmptyError):
+                rch.recv_nowait()
+
+            sch.send_nowait(b'ham', unbound=channels.UNBOUND_REMOVE)
+            self.assertEqual(_channels.get_count(rch.id), 1)
+            interp = common(rch, sch, channels.UNBOUND_REMOVE, 1)
+            self.assertEqual(_channels.get_count(rch.id), 3)
+            sch.send_nowait(42, unbound=channels.UNBOUND_REMOVE)
+            self.assertEqual(_channels.get_count(rch.id), 4)
+            del interp
+            self.assertEqual(_channels.get_count(rch.id), 2)
+            obj1 = rch.recv()
+            obj2 = rch.recv()
+            self.assertEqual(obj1, b'ham')
+            self.assertEqual(obj2, 42)
+            self.assertEqual(_channels.get_count(rch.id), 0)
+            with self.assertRaises(channels.ChannelEmptyError):
+                rch.recv_nowait()
+
+    def test_send_cleared_with_subinterpreter_mixed(self):
+        rch, sch = channels.create()
+        interp = interpreters.create()
+
+        # If we don't associate the main interpreter with the channel
+        # then the channel will be automatically closed when interp
+        # is destroyed.
+        sch.send_nowait(None)
+        rch.recv()
+        self.assertEqual(_channels.get_count(rch.id), 0)
+
+        _run_output(interp, dedent(f"""
+            from test.support.interpreters import channels
+            sch = channels.SendChannel({sch.id})
+            sch.send_nowait(1, unbound=channels.UNBOUND)
+            sch.send_nowait(2, unbound=channels.UNBOUND_ERROR)
+            sch.send_nowait(3)
+            sch.send_nowait(4, unbound=channels.UNBOUND_REMOVE)
+            sch.send_nowait(5, unbound=channels.UNBOUND)
+            """))
+        self.assertEqual(_channels.get_count(rch.id), 5)
+
+        del interp
+        self.assertEqual(_channels.get_count(rch.id), 4)
+
+        obj1 = rch.recv()
+        self.assertIs(obj1, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 3)
+
+        with self.assertRaises(channels.ItemInterpreterDestroyed):
+            rch.recv()
+        self.assertEqual(_channels.get_count(rch.id), 2)
+
+        obj2 = rch.recv()
+        self.assertIs(obj2, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 1)
+
+        obj3 = rch.recv()
+        self.assertIs(obj3, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 0)
+
+    def test_send_cleared_with_subinterpreter_multiple(self):
+        rch, sch = channels.create()
+        interp1 = interpreters.create()
+        interp2 = interpreters.create()
+
+        sch.send_nowait(1)
+        _run_output(interp1, dedent(f"""
+            from test.support.interpreters import channels
+            rch = channels.RecvChannel({rch.id})
+            sch = channels.SendChannel({sch.id})
+            obj1 = rch.recv()
+            sch.send_nowait(2, unbound=channels.UNBOUND)
+            sch.send_nowait(obj1, unbound=channels.UNBOUND_REMOVE)
+            """))
+        _run_output(interp2, dedent(f"""
+            from test.support.interpreters import channels
+            rch = channels.RecvChannel({rch.id})
+            sch = channels.SendChannel({sch.id})
+            obj2 = rch.recv()
+            obj1 = rch.recv()
+            """))
+        self.assertEqual(_channels.get_count(rch.id), 0)
+        sch.send_nowait(3)
+        _run_output(interp1, dedent("""
+            sch.send_nowait(4, unbound=channels.UNBOUND)
+            # interp closed here
+            sch.send_nowait(5, unbound=channels.UNBOUND_REMOVE)
+            sch.send_nowait(6, unbound=channels.UNBOUND)
+            """))
+        _run_output(interp2, dedent("""
+            sch.send_nowait(7, unbound=channels.UNBOUND_ERROR)
+            # interp closed here
+            sch.send_nowait(obj1, unbound=channels.UNBOUND_ERROR)
+            sch.send_nowait(obj2, unbound=channels.UNBOUND_REMOVE)
+            sch.send_nowait(8, unbound=channels.UNBOUND)
+            """))
+        _run_output(interp1, dedent("""
+            sch.send_nowait(9, unbound=channels.UNBOUND_REMOVE)
+            sch.send_nowait(10, unbound=channels.UNBOUND)
+            """))
+        self.assertEqual(_channels.get_count(rch.id), 10)
+
+        obj3 = rch.recv()
+        self.assertEqual(obj3, 3)
+        self.assertEqual(_channels.get_count(rch.id), 9)
+
+        obj4 = rch.recv()
+        self.assertEqual(obj4, 4)
+        self.assertEqual(_channels.get_count(rch.id), 8)
+
+        del interp1
+        self.assertEqual(_channels.get_count(rch.id), 6)
+
+        # obj5 was removed
+
+        obj6 = rch.recv()
+        self.assertIs(obj6, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 5)
+
+        obj7 = rch.recv()
+        self.assertEqual(obj7, 7)
+        self.assertEqual(_channels.get_count(rch.id), 4)
+
+        del interp2
+        self.assertEqual(_channels.get_count(rch.id), 3)
+
+        # obj1
+        with self.assertRaises(channels.ItemInterpreterDestroyed):
+            rch.recv()
+        self.assertEqual(_channels.get_count(rch.id), 2)
+
+        # obj2 was removed
+
+        obj8 = rch.recv()
+        self.assertIs(obj8, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 1)
+
+        # obj9 was removed
+
+        obj10 = rch.recv()
+        self.assertIs(obj10, channels.UNBOUND)
+        self.assertEqual(_channels.get_count(rch.id), 0)
+
 
 if __name__ == '__main__':
     # Test needs to be a package, so we can do relative imports.
diff --git a/Lib/test/test_interpreters/test_queues.py b/Lib/test/test_interpreters/test_queues.py
index a3d44c402e0ea2..cbe0d8caffdefa 100644
--- a/Lib/test/test_interpreters/test_queues.py
+++ b/Lib/test/test_interpreters/test_queues.py
@@ -9,17 +9,20 @@
 # Raise SkipTest if subinterpreters not supported.
 _queues = import_helper.import_module('_interpqueues')
 from test.support import interpreters
-from test.support.interpreters import queues
+from test.support.interpreters import queues, _crossinterp
 from .utils import _run_output, TestBase as _TestBase
 
 
+REPLACE = _crossinterp._UNBOUND_CONSTANT_TO_FLAG[_crossinterp.UNBOUND]
+
+
 def get_num_queues():
     return len(_queues.list_all())
 
 
 class TestBase(_TestBase):
     def tearDown(self):
-        for qid, _ in _queues.list_all():
+        for qid, _, _ in _queues.list_all():
             try:
                 _queues.destroy(qid)
             except Exception:
@@ -40,7 +43,7 @@ def test_highlevel_reloaded(self):
         importlib.reload(queues)
 
     def test_create_destroy(self):
-        qid = _queues.create(2, 0)
+        qid = _queues.create(2, 0, REPLACE)
         _queues.destroy(qid)
         self.assertEqual(get_num_queues(), 0)
         with self.assertRaises(queues.QueueNotFoundError):
@@ -54,7 +57,7 @@ def test_not_destroyed(self):
             '-c',
             dedent(f"""
                 import {_queues.__name__} as _queues
-                _queues.create(2, 0)
+                _queues.create(2, 0, {REPLACE})
                 """),
         )
         self.assertEqual(stdout, '')
@@ -65,13 +68,13 @@ def test_not_destroyed(self):
 
     def test_bind_release(self):
         with self.subTest('typical'):
-            qid = _queues.create(2, 0)
+            qid = _queues.create(2, 0, REPLACE)
             _queues.bind(qid)
             _queues.release(qid)
             self.assertEqual(get_num_queues(), 0)
 
         with self.subTest('bind too much'):
-            qid = _queues.create(2, 0)
+            qid = _queues.create(2, 0, REPLACE)
             _queues.bind(qid)
             _queues.bind(qid)
             _queues.release(qid)
@@ -79,7 +82,7 @@ def test_bind_release(self):
             self.assertEqual(get_num_queues(), 0)
 
         with self.subTest('nested'):
-            qid = _queues.create(2, 0)
+            qid = _queues.create(2, 0, REPLACE)
             _queues.bind(qid)
             _queues.bind(qid)
             _queues.release(qid)
@@ -87,7 +90,7 @@ def test_bind_release(self):
             self.assertEqual(get_num_queues(), 0)
 
         with self.subTest('release without binding'):
-            qid = _queues.create(2, 0)
+            qid = _queues.create(2, 0, REPLACE)
             with self.assertRaises(queues.QueueError):
                 _queues.release(qid)
 
@@ -427,26 +430,206 @@ def test_put_get_different_interpreters(self):
                 self.assertNotEqual(id(obj2), int(out))
 
     def test_put_cleared_with_subinterpreter(self):
-        interp = interpreters.create()
-        queue = queues.create()
-
-        out = _run_output(
-            interp,
-            dedent(f"""
+        def common(queue, unbound=None, presize=0):
+            if not unbound:
+                extraargs = ''
+            elif unbound is queues.UNBOUND:
+                extraargs = ', unbound=queues.UNBOUND'
+            elif unbound is queues.UNBOUND_ERROR:
+                extraargs = ', unbound=queues.UNBOUND_ERROR'
+            elif unbound is queues.UNBOUND_REMOVE:
+                extraargs = ', unbound=queues.UNBOUND_REMOVE'
+            else:
+                raise NotImplementedError(repr(unbound))
+            interp = interpreters.create()
+
+            _run_output(interp, dedent(f"""
                 from test.support.interpreters import queues
                 queue = queues.Queue({queue.id})
                 obj1 = b'spam'
                 obj2 = b'eggs'
-                queue.put(obj1, syncobj=True)
-                queue.put(obj2, syncobj=True)
+                queue.put(obj1, syncobj=True{extraargs})
+                queue.put(obj2, syncobj=True{extraargs})
                 """))
-        self.assertEqual(queue.qsize(), 2)
+            self.assertEqual(queue.qsize(), presize + 2)
+
+            if presize == 0:
+                obj1 = queue.get()
+                self.assertEqual(obj1, b'spam')
+                self.assertEqual(queue.qsize(), presize + 1)
+
+            return interp
+
+        with self.subTest('default'):  # UNBOUND
+            queue = queues.create()
+            interp = common(queue)
+            del interp
+            obj1 = queue.get()
+            self.assertIs(obj1, queues.UNBOUND)
+            self.assertEqual(queue.qsize(), 0)
+            with self.assertRaises(queues.QueueEmpty):
+                queue.get_nowait()
+
+        with self.subTest('UNBOUND'):
+            queue = queues.create()
+            interp = common(queue, queues.UNBOUND)
+            del interp
+            obj1 = queue.get()
+            self.assertIs(obj1, queues.UNBOUND)
+            self.assertEqual(queue.qsize(), 0)
+            with self.assertRaises(queues.QueueEmpty):
+                queue.get_nowait()
+
+        with self.subTest('UNBOUND_ERROR'):
+            queue = queues.create()
+            interp = common(queue, queues.UNBOUND_ERROR)
+
+            del interp
+            self.assertEqual(queue.qsize(), 1)
+            with self.assertRaises(queues.ItemInterpreterDestroyed):
+                queue.get()
+
+            self.assertEqual(queue.qsize(), 0)
+            with self.assertRaises(queues.QueueEmpty):
+                queue.get_nowait()
+
+        with self.subTest('UNBOUND_REMOVE'):
+            queue = queues.create()
+
+            interp = common(queue, queues.UNBOUND_REMOVE)
+            del interp
+            self.assertEqual(queue.qsize(), 0)
+            with self.assertRaises(queues.QueueEmpty):
+                queue.get_nowait()
+
+            queue.put(b'ham', unbound=queues.UNBOUND_REMOVE)
+            self.assertEqual(queue.qsize(), 1)
+            interp = common(queue, queues.UNBOUND_REMOVE, 1)
+            self.assertEqual(queue.qsize(), 3)
+            queue.put(42, unbound=queues.UNBOUND_REMOVE)
+            self.assertEqual(queue.qsize(), 4)
+            del interp
+            self.assertEqual(queue.qsize(), 2)
+            obj1 = queue.get()
+            obj2 = queue.get()
+            self.assertEqual(obj1, b'ham')
+            self.assertEqual(obj2, 42)
+            self.assertEqual(queue.qsize(), 0)
+            with self.assertRaises(queues.QueueEmpty):
+                queue.get_nowait()
+
+    def test_put_cleared_with_subinterpreter_mixed(self):
+        queue = queues.create()
+        interp = interpreters.create()
+        _run_output(interp, dedent(f"""
+            from test.support.interpreters import queues
+            queue = queues.Queue({queue.id})
+            queue.put(1, syncobj=True, unbound=queues.UNBOUND)
+            queue.put(2, syncobj=True, unbound=queues.UNBOUND_ERROR)
+            queue.put(3, syncobj=True)
+            queue.put(4, syncobj=True, unbound=queues.UNBOUND_REMOVE)
+            queue.put(5, syncobj=True, unbound=queues.UNBOUND)
+            """))
+        self.assertEqual(queue.qsize(), 5)
+
+        del interp
+        self.assertEqual(queue.qsize(), 4)
 
         obj1 = queue.get()
-        self.assertEqual(obj1, b'spam')
+        self.assertIs(obj1, queues.UNBOUND)
+        self.assertEqual(queue.qsize(), 3)
+
+        with self.assertRaises(queues.ItemInterpreterDestroyed):
+            queue.get()
+        self.assertEqual(queue.qsize(), 2)
+
+        obj2 = queue.get()
+        self.assertIs(obj2, queues.UNBOUND)
         self.assertEqual(queue.qsize(), 1)
 
-        del interp
+        obj3 = queue.get()
+        self.assertIs(obj3, queues.UNBOUND)
+        self.assertEqual(queue.qsize(), 0)
+
+    def test_put_cleared_with_subinterpreter_multiple(self):
+        queue = queues.create()
+        interp1 = interpreters.create()
+        interp2 = interpreters.create()
+
+        queue.put(1, syncobj=True)
+        _run_output(interp1, dedent(f"""
+            from test.support.interpreters import queues
+            queue = queues.Queue({queue.id})
+            obj1 = queue.get()
+            queue.put(2, syncobj=True, unbound=queues.UNBOUND)
+            queue.put(obj1, syncobj=True, unbound=queues.UNBOUND_REMOVE)
+            """))
+        _run_output(interp2, dedent(f"""
+            from test.support.interpreters import queues
+            queue = queues.Queue({queue.id})
+            obj2 = queue.get()
+            obj1 = queue.get()
+            """))
+        self.assertEqual(queue.qsize(), 0)
+        queue.put(3)
+        _run_output(interp1, dedent("""
+            queue.put(4, syncobj=True, unbound=queues.UNBOUND)
+            # interp closed here
+            queue.put(5, syncobj=True, unbound=queues.UNBOUND_REMOVE)
+            queue.put(6, syncobj=True, unbound=queues.UNBOUND)
+            """))
+        _run_output(interp2, dedent("""
+            queue.put(7, syncobj=True, unbound=queues.UNBOUND_ERROR)
+            # interp closed here
+            queue.put(obj1, syncobj=True, unbound=queues.UNBOUND_ERROR)
+            queue.put(obj2, syncobj=True, unbound=queues.UNBOUND_REMOVE)
+            queue.put(8, syncobj=True, unbound=queues.UNBOUND)
+            """))
+        _run_output(interp1, dedent("""
+            queue.put(9, syncobj=True, unbound=queues.UNBOUND_REMOVE)
+            queue.put(10, syncobj=True, unbound=queues.UNBOUND)
+            """))
+        self.assertEqual(queue.qsize(), 10)
+
+        obj3 = queue.get()
+        self.assertEqual(obj3, 3)
+        self.assertEqual(queue.qsize(), 9)
+
+        obj4 = queue.get()
+        self.assertEqual(obj4, 4)
+        self.assertEqual(queue.qsize(), 8)
+
+        del interp1
+        self.assertEqual(queue.qsize(), 6)
+
+        # obj5 was removed
+
+        obj6 = queue.get()
+        self.assertIs(obj6, queues.UNBOUND)
+        self.assertEqual(queue.qsize(), 5)
+
+        obj7 = queue.get()
+        self.assertEqual(obj7, 7)
+        self.assertEqual(queue.qsize(), 4)
+
+        del interp2
+        self.assertEqual(queue.qsize(), 3)
+
+        # obj1
+        with self.assertRaises(queues.ItemInterpreterDestroyed):
+            queue.get()
+        self.assertEqual(queue.qsize(), 2)
+
+        # obj2 was removed
+
+        obj8 = queue.get()
+        self.assertIs(obj8, queues.UNBOUND)
+        self.assertEqual(queue.qsize(), 1)
+
+        # obj9 was removed
+
+        obj10 = queue.get()
+        self.assertIs(obj10, queues.UNBOUND)
         self.assertEqual(queue.qsize(), 0)
 
     def test_put_get_different_threads(self):
diff --git a/Lib/test/test_interpreters/test_stress.py b/Lib/test/test_interpreters/test_stress.py
index e400535b2a0e4e..56bfc1721992c8 100644
--- a/Lib/test/test_interpreters/test_stress.py
+++ b/Lib/test/test_interpreters/test_stress.py
@@ -23,6 +23,7 @@ def test_create_many_sequential(self):
             alive.append(interp)
 
     @support.requires_resource('cpu')
+    @threading_helper.requires_working_threading()
     def test_create_many_threaded(self):
         alive = []
         def task():
@@ -32,6 +33,35 @@ def task():
         with threading_helper.start_threads(threads):
             pass
 
+    @support.requires_resource('cpu')
+    @threading_helper.requires_working_threading()
+    def test_many_threads_running_interp_in_other_interp(self):
+        interp = interpreters.create()
+
+        script = f"""if True:
+            import _interpreters
+            _interpreters.run_string({interp.id}, '1')
+            """
+
+        def run():
+            interp = interpreters.create()
+            alreadyrunning = (f'{interpreters.InterpreterError}: '
+                              'interpreter already running')
+            success = False
+            while not success:
+                try:
+                    interp.exec(script)
+                except interpreters.ExecutionFailed as exc:
+                    if exc.excinfo.msg != 'interpreter already running':
+                        raise  # re-raise
+                    assert exc.excinfo.type.__name__ == 'InterpreterError'
+                else:
+                    success = True
+
+        threads = (threading.Thread(target=run) for _ in range(200))
+        with threading_helper.start_threads(threads):
+            pass
+
 
 if __name__ == '__main__':
     # Test needs to be a package, so we can do relative imports.
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index e5cb08c2cdd04c..f1f8ce57668f3b 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -639,11 +639,9 @@ def test_large_file_ops(self):
 
     def test_with_open(self):
         for bufsize in (0, 100):
-            f = None
             with self.open(os_helper.TESTFN, "wb", bufsize) as f:
                 f.write(b"xxx")
             self.assertEqual(f.closed, True)
-            f = None
             try:
                 with self.open(os_helper.TESTFN, "wb", bufsize) as f:
                     1/0
@@ -1150,6 +1148,21 @@ def test_disallow_instantiation(self):
         _io = self._io
         support.check_disallow_instantiation(self, _io._BytesIOBuffer)
 
+    def test_stringio_setstate(self):
+        # gh-127182: Calling __setstate__() with invalid arguments must not crash
+        obj = self._io.StringIO()
+        with self.assertRaisesRegex(
+            TypeError,
+            'initial_value must be str or None, not int',
+        ):
+            obj.__setstate__((1, '', 0, {}))
+
+        obj.__setstate__((None, '', 0, {}))  # should not crash
+        self.assertEqual(obj.getvalue(), '')
+
+        obj.__setstate__(('', '', 0, {}))
+        self.assertEqual(obj.getvalue(), '')
+
 class PyIOTest(IOTest):
     pass
 
@@ -4016,6 +4029,28 @@ def write(self, data):
         t.write("x"*chunk_size)
         self.assertEqual([b"abcdef", b"ghi", b"x"*chunk_size], buf._write_stack)
 
+    def test_issue119506(self):
+        chunk_size = 8192
+
+        class MockIO(self.MockRawIO):
+            written = False
+            def write(self, data):
+                if not self.written:
+                    self.written = True
+                    t.write("middle")
+                return super().write(data)
+
+        buf = MockIO()
+        t = self.TextIOWrapper(buf)
+        t.write("abc")
+        t.write("def")
+        # writing data which size >= chunk_size cause flushing buffer before write.
+        t.write("g" * chunk_size)
+        t.flush()
+
+        self.assertEqual([b"abcdef", b"middle", b"g"*chunk_size],
+                         buf._write_stack)
+
 
 class PyTextIOWrapperTest(TextIOWrapperTest):
     io = pyio
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index c3ecf2a742941a..c331478b6d4157 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -2427,6 +2427,8 @@ def testReservedIpv6(self):
         self.assertTrue(ipaddress.ip_address('2001:30::').is_global)
         self.assertFalse(ipaddress.ip_address('2001:40::').is_global)
         self.assertFalse(ipaddress.ip_address('2002::').is_global)
+        # gh-124217: conform with RFC 9637
+        self.assertFalse(ipaddress.ip_address('3fff::').is_global)
 
         # some generic IETF reserved addresses
         self.assertEqual(True, ipaddress.ip_address('100::').is_reserved)
@@ -2440,6 +2442,30 @@ def testIpv4Mapped(self):
         self.assertEqual(ipaddress.ip_address('::ffff:c0a8:101').ipv4_mapped,
                          ipaddress.ip_address('192.168.1.1'))
 
+    def testIpv4MappedProperties(self):
+        # Test that an IPv4 mapped IPv6 address has
+        # the same properties as an IPv4 address.
+        for addr4 in (
+            "178.62.3.251",     # global
+            "169.254.169.254",  # link local
+            "127.0.0.1",        # loopback
+            "224.0.0.1",        # multicast
+            "192.168.0.1",      # private
+            "0.0.0.0",          # unspecified
+            "100.64.0.1",       # public and not global
+        ):
+            with self.subTest(addr4):
+                ipv4 = ipaddress.IPv4Address(addr4)
+                ipv6 = ipaddress.IPv6Address(f"::ffff:{addr4}")
+
+                self.assertEqual(ipv4.is_global, ipv6.is_global)
+                self.assertEqual(ipv4.is_private, ipv6.is_private)
+                self.assertEqual(ipv4.is_reserved, ipv6.is_reserved)
+                self.assertEqual(ipv4.is_multicast, ipv6.is_multicast)
+                self.assertEqual(ipv4.is_unspecified, ipv6.is_unspecified)
+                self.assertEqual(ipv4.is_link_local, ipv6.is_link_local)
+                self.assertEqual(ipv4.is_loopback, ipv6.is_loopback)
+
     def testIpv4MappedPrivateCheck(self):
         self.assertEqual(
                 True, ipaddress.ip_address('::ffff:192.168.1.1').is_private)
@@ -2585,12 +2611,42 @@ def testExplodeShortHandIpStr(self):
         self.assertEqual('192.168.178.1', addr4.exploded)
 
     def testReversePointer(self):
-        addr1 = ipaddress.IPv4Address('127.0.0.1')
-        addr2 = ipaddress.IPv6Address('2001:db8::1')
-        self.assertEqual('1.0.0.127.in-addr.arpa', addr1.reverse_pointer)
-        self.assertEqual('1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.' +
-                         'b.d.0.1.0.0.2.ip6.arpa',
-                         addr2.reverse_pointer)
+        for addr_v4, expected in [
+            ('127.0.0.1', '1.0.0.127.in-addr.arpa'),
+            # test vector: https://www.rfc-editor.org/rfc/rfc1035, §3.5
+            ('10.2.0.52', '52.0.2.10.in-addr.arpa'),
+        ]:
+            with self.subTest('ipv4_reverse_pointer', addr=addr_v4):
+                addr = ipaddress.IPv4Address(addr_v4)
+                self.assertEqual(addr.reverse_pointer, expected)
+
+        for addr_v6, expected in [
+            (
+                '2001:db8::1', (
+                    '1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.'
+                    '0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.'
+                    'ip6.arpa'
+                )
+            ),
+            (
+                '::FFFF:192.168.1.35', (
+                    '3.2.1.0.8.a.0.c.f.f.f.f.0.0.0.0.'
+                    '0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.'
+                    'ip6.arpa'
+                )
+            ),
+            # test vector: https://www.rfc-editor.org/rfc/rfc3596, §2.5
+            (
+                '4321:0:1:2:3:4:567:89ab', (
+                    'b.a.9.8.7.6.5.0.4.0.0.0.3.0.0.0.'
+                    '2.0.0.0.1.0.0.0.0.0.0.0.1.2.3.4.'
+                    'ip6.arpa'
+                )
+             )
+        ]:
+            with self.subTest('ipv6_reverse_pointer', addr=addr_v6):
+                addr = ipaddress.IPv6Address(addr_v6)
+                self.assertEqual(addr.reverse_pointer, expected)
 
     def testIntRepresentation(self):
         self.assertEqual(16909060, int(self.ipv4_address))
diff --git a/Lib/test/test_iter.py b/Lib/test/test_iter.py
index 9606d5beab71cb..1b9f3cf76240ad 100644
--- a/Lib/test/test_iter.py
+++ b/Lib/test/test_iter.py
@@ -5,11 +5,13 @@
 from test.support import cpython_only
 from test.support.os_helper import TESTFN, unlink
 from test.support import check_free_after_iterating, ALWAYS_EQ, NEVER_EQ
+from test.support import BrokenIter
 import pickle
 import collections.abc
 import functools
 import contextlib
 import builtins
+import traceback
 
 # Test result of triple loop (too big to inline)
 TRIPLETS = [(0, 0, 0), (0, 0, 1), (0, 0, 2),
@@ -1143,6 +1145,46 @@ def test_error_iter(self):
             self.assertRaises(TypeError, iter, typ())
         self.assertRaises(ZeroDivisionError, iter, BadIterableClass())
 
+    def test_exception_locations(self):
+        # The location of an exception raised from __init__ or
+        # __next__ should should be the iterator expression
+
+        def init_raises():
+            try:
+                for x in BrokenIter(init_raises=True):
+                    pass
+            except Exception as e:
+                return e
+
+        def next_raises():
+            try:
+                for x in BrokenIter(next_raises=True):
+                    pass
+            except Exception as e:
+                return e
+
+        def iter_raises():
+            try:
+                for x in BrokenIter(iter_raises=True):
+                    pass
+            except Exception as e:
+                return e
+
+        for func, expected in [(init_raises, "BrokenIter(init_raises=True)"),
+                               (next_raises, "BrokenIter(next_raises=True)"),
+                               (iter_raises, "BrokenIter(iter_raises=True)"),
+                              ]:
+            with self.subTest(func):
+                exc = func()
+                f = traceback.extract_tb(exc.__traceback__)[0]
+                indent = 16
+                co = func.__code__
+                self.assertEqual(f.lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.end_lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.line[f.colno - indent : f.end_colno - indent],
+                                 expected)
+
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index e243da309f03d8..ab382cf4dd13e1 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -603,6 +603,8 @@ def test_count(self):
         self.assertEqual(take(2, zip('abc',count(-3))), [('a', -3), ('b', -2)])
         self.assertRaises(TypeError, count, 2, 3, 4)
         self.assertRaises(TypeError, count, 'a')
+        self.assertEqual(take(3, count(maxsize)),
+                        [maxsize, maxsize + 1, maxsize + 2])
         self.assertEqual(take(10, count(maxsize-5)),
                          list(range(maxsize-5, maxsize+5)))
         self.assertEqual(take(10, count(-maxsize-5)),
@@ -625,6 +627,15 @@ def test_count(self):
         self.assertEqual(next(c), -8)
         self.assertEqual(repr(count(10.25)), 'count(10.25)')
         self.assertEqual(repr(count(10.0)), 'count(10.0)')
+
+        self.assertEqual(repr(count(maxsize)), f'count({maxsize})')
+        c = count(maxsize - 1)
+        self.assertEqual(repr(c), f'count({maxsize - 1})')
+        next(c)  # c is now at masize
+        self.assertEqual(repr(c), f'count({maxsize})')
+        next(c)
+        self.assertEqual(repr(c), f'count({maxsize + 1})')
+
         self.assertEqual(type(next(count(10.0))), float)
         for i in (-sys.maxsize-5, -sys.maxsize+5 ,-10, -1, 0, 10, sys.maxsize-5, sys.maxsize+5):
             # Test repr
@@ -644,7 +655,7 @@ def test_count(self):
         count(1, maxsize+5); sys.exc_info()
 
     @pickle_deprecated
-    def test_count_with_stride(self):
+    def test_count_with_step(self):
         self.assertEqual(lzip('abc',count(2,3)), [('a', 2), ('b', 5), ('c', 8)])
         self.assertEqual(lzip('abc',count(start=2,step=3)),
                          [('a', 2), ('b', 5), ('c', 8)])
@@ -658,6 +669,12 @@ def test_count_with_stride(self):
         self.assertEqual(take(20, count(-maxsize-15, 3)), take(20, range(-maxsize-15,-maxsize+100, 3)))
         self.assertEqual(take(3, count(10, maxsize+5)),
                          list(range(10, 10+3*(maxsize+5), maxsize+5)))
+        self.assertEqual(take(3, count(maxsize, 2)),
+                         [maxsize, maxsize + 2, maxsize + 4])
+        self.assertEqual(take(3, count(maxsize, maxsize)),
+                         [maxsize, 2 * maxsize, 3 * maxsize])
+        self.assertEqual(take(3, count(-maxsize, maxsize)),
+                        [-maxsize, 0, maxsize])
         self.assertEqual(take(3, count(2, 1.25)), [2, 3.25, 4.5])
         self.assertEqual(take(3, count(2, 3.25-4j)), [2, 5.25-4j, 8.5-8j])
         self.assertEqual(take(3, count(Decimal('1.1'), Decimal('.1'))),
@@ -699,6 +716,42 @@ def test_count_with_stride(self):
                 for proto in range(pickle.HIGHEST_PROTOCOL + 1):
                     self.pickletest(proto, count(i, j))
 
+        c = count(maxsize -2, 2)
+        self.assertEqual(repr(c), f'count({maxsize - 2}, 2)')
+        next(c)  # c is now at masize
+        self.assertEqual(repr(c), f'count({maxsize}, 2)')
+        next(c)
+        self.assertEqual(repr(c), f'count({maxsize + 2}, 2)')
+
+        c = count(maxsize + 1, -1)
+        self.assertEqual(repr(c), f'count({maxsize + 1}, -1)')
+        next(c)  # c is now at masize
+        self.assertEqual(repr(c), f'count({maxsize}, -1)')
+        next(c)
+        self.assertEqual(repr(c), f'count({maxsize - 1}, -1)')
+
+    @threading_helper.requires_working_threading()
+    def test_count_threading(self, step=1):
+        # this test verifies multithreading consistency, which is
+        # mostly for testing builds without GIL, but nice to test anyway
+        count_to = 10_000
+        num_threads = 10
+        c = count(step=step)
+        def counting_thread():
+            for i in range(count_to):
+                next(c)
+        threads = []
+        for i in range(num_threads):
+            thread = threading.Thread(target=counting_thread)
+            thread.start()
+            threads.append(thread)
+        for thread in threads:
+            thread.join()
+        self.assertEqual(next(c), count_to * num_threads * step)
+
+    def test_count_with_step_threading(self):
+        self.test_count_threading(step=5)
+
     def test_cycle(self):
         self.assertEqual(take(10, cycle('abc')), list('abcabcabca'))
         self.assertEqual(list(cycle('')), [])
@@ -1266,12 +1319,16 @@ def product1(*args, **kwds):
                 else:
                     return
 
-        def product2(*args, **kwds):
+        def product2(*iterables, repeat=1):
             'Pure python version used in docs'
-            pools = list(map(tuple, args)) * kwds.get('repeat', 1)
+            if repeat < 0:
+                raise ValueError('repeat argument cannot be negative')
+            pools = [tuple(pool) for pool in iterables] * repeat
+
             result = [[]]
             for pool in pools:
                 result = [x+[y] for x in result for y in pool]
+
             for prod in result:
                 yield tuple(prod)
 
@@ -1616,10 +1673,11 @@ def test_tee(self):
             self.assertEqual(len(result), n)
             self.assertEqual([list(x) for x in result], [list('abc')]*n)
 
-        # tee pass-through to copyable iterator
+        # tee objects are independent (see bug gh-123884)
         a, b = tee('abc')
         c, d = tee(a)
-        self.assertTrue(a is c)
+        e, f = tee(c)
+        self.assertTrue(len({a, b, c, d, e, f}) == 6)
 
         # test tee_new
         t1, t2 = tee('abc')
@@ -2040,6 +2098,172 @@ def test_islice_recipe(self):
         self.assertEqual(next(c), 3)
 
 
+    def test_tee_recipe(self):
+
+        # Begin tee() recipe ###########################################
+
+        def tee(iterable, n=2):
+            if n < 0:
+                raise ValueError
+            if n == 0:
+                return ()
+            iterator = _tee(iterable)
+            result = [iterator]
+            for _ in range(n - 1):
+                result.append(_tee(iterator))
+            return tuple(result)
+
+        class _tee:
+
+            def __init__(self, iterable):
+                it = iter(iterable)
+                if isinstance(it, _tee):
+                    self.iterator = it.iterator
+                    self.link = it.link
+                else:
+                    self.iterator = it
+                    self.link = [None, None]
+
+            def __iter__(self):
+                return self
+
+            def __next__(self):
+                link = self.link
+                if link[1] is None:
+                    link[0] = next(self.iterator)
+                    link[1] = [None, None]
+                value, self.link = link
+                return value
+
+        # End tee() recipe #############################################
+
+        n = 200
+
+        a, b = tee([])        # test empty iterator
+        self.assertEqual(list(a), [])
+        self.assertEqual(list(b), [])
+
+        a, b = tee(irange(n)) # test 100% interleaved
+        self.assertEqual(lzip(a,b), lzip(range(n), range(n)))
+
+        a, b = tee(irange(n)) # test 0% interleaved
+        self.assertEqual(list(a), list(range(n)))
+        self.assertEqual(list(b), list(range(n)))
+
+        a, b = tee(irange(n)) # test dealloc of leading iterator
+        for i in range(100):
+            self.assertEqual(next(a), i)
+        del a
+        self.assertEqual(list(b), list(range(n)))
+
+        a, b = tee(irange(n)) # test dealloc of trailing iterator
+        for i in range(100):
+            self.assertEqual(next(a), i)
+        del b
+        self.assertEqual(list(a), list(range(100, n)))
+
+        for j in range(5):   # test randomly interleaved
+            order = [0]*n + [1]*n
+            random.shuffle(order)
+            lists = ([], [])
+            its = tee(irange(n))
+            for i in order:
+                value = next(its[i])
+                lists[i].append(value)
+            self.assertEqual(lists[0], list(range(n)))
+            self.assertEqual(lists[1], list(range(n)))
+
+        # test argument format checking
+        self.assertRaises(TypeError, tee)
+        self.assertRaises(TypeError, tee, 3)
+        self.assertRaises(TypeError, tee, [1,2], 'x')
+        self.assertRaises(TypeError, tee, [1,2], 3, 'x')
+
+        # tee object should be instantiable
+        a, b = tee('abc')
+        c = type(a)('def')
+        self.assertEqual(list(c), list('def'))
+
+        # test long-lagged and multi-way split
+        a, b, c = tee(range(2000), 3)
+        for i in range(100):
+            self.assertEqual(next(a), i)
+        self.assertEqual(list(b), list(range(2000)))
+        self.assertEqual([next(c), next(c)], list(range(2)))
+        self.assertEqual(list(a), list(range(100,2000)))
+        self.assertEqual(list(c), list(range(2,2000)))
+
+        # test invalid values of n
+        self.assertRaises(TypeError, tee, 'abc', 'invalid')
+        self.assertRaises(ValueError, tee, [], -1)
+
+        for n in range(5):
+            result = tee('abc', n)
+            self.assertEqual(type(result), tuple)
+            self.assertEqual(len(result), n)
+            self.assertEqual([list(x) for x in result], [list('abc')]*n)
+
+        # tee objects are independent (see bug gh-123884)
+        a, b = tee('abc')
+        c, d = tee(a)
+        e, f = tee(c)
+        self.assertTrue(len({a, b, c, d, e, f}) == 6)
+
+        # test tee_new
+        t1, t2 = tee('abc')
+        tnew = type(t1)
+        self.assertRaises(TypeError, tnew)
+        self.assertRaises(TypeError, tnew, 10)
+        t3 = tnew(t1)
+        self.assertTrue(list(t1) == list(t2) == list(t3) == list('abc'))
+
+        # test that tee objects are weak referencable
+        a, b = tee(range(10))
+        p = weakref.proxy(a)
+        self.assertEqual(getattr(p, '__class__'), type(b))
+        del a
+        gc.collect()  # For PyPy or other GCs.
+        self.assertRaises(ReferenceError, getattr, p, '__class__')
+
+        ans = list('abc')
+        long_ans = list(range(10000))
+
+        # Tests not applicable to the tee() recipe
+        if False:
+            # check copy
+            a, b = tee('abc')
+            self.assertEqual(list(copy.copy(a)), ans)
+            self.assertEqual(list(copy.copy(b)), ans)
+            a, b = tee(list(range(10000)))
+            self.assertEqual(list(copy.copy(a)), long_ans)
+            self.assertEqual(list(copy.copy(b)), long_ans)
+
+            # check partially consumed copy
+            a, b = tee('abc')
+            take(2, a)
+            take(1, b)
+            self.assertEqual(list(copy.copy(a)), ans[2:])
+            self.assertEqual(list(copy.copy(b)), ans[1:])
+            self.assertEqual(list(a), ans[2:])
+            self.assertEqual(list(b), ans[1:])
+            a, b = tee(range(10000))
+            take(100, a)
+            take(60, b)
+            self.assertEqual(list(copy.copy(a)), long_ans[100:])
+            self.assertEqual(list(copy.copy(b)), long_ans[60:])
+            self.assertEqual(list(a), long_ans[100:])
+            self.assertEqual(list(b), long_ans[60:])
+
+        # Issue 13454: Crash when deleting backward iterator from tee()
+        forward, backward = tee(repeat(None, 2000)) # 20000000
+        try:
+            any(forward)  # exhaust the iterator
+            del backward
+        except:
+            del forward, backward
+            raise
+
+
 class TestGC(unittest.TestCase):
 
     def makecycle(self, iterator, container):
diff --git a/Lib/test/test_json/test_decode.py b/Lib/test/test_json/test_decode.py
index 79fb239b35d3f2..2250af964c022b 100644
--- a/Lib/test/test_json/test_decode.py
+++ b/Lib/test/test_json/test_decode.py
@@ -16,6 +16,12 @@ def test_float(self):
         self.assertIsInstance(rval, float)
         self.assertEqual(rval, 1.0)
 
+    def test_nonascii_digits_rejected(self):
+        # JSON specifies only ascii digits, see gh-125687
+        for num in ["1\uff10", "0.\uff10", "0e\uff10"]:
+            with self.assertRaises(self.JSONDecodeError):
+                self.loads(num)
+
     def test_bytes(self):
         self.assertEqual(self.loads(b"1"), 1)
 
diff --git a/Lib/test/test_json/test_scanstring.py b/Lib/test/test_json/test_scanstring.py
index 2d3ee8a8bf0f92..cca556a3b95bab 100644
--- a/Lib/test/test_json/test_scanstring.py
+++ b/Lib/test/test_json/test_scanstring.py
@@ -116,6 +116,11 @@ def test_bad_escapes(self):
             '"\\u012z"',
             '"\\u0x12"',
             '"\\u0X12"',
+            '"\\u{0}"'.format("\uff10" * 4),
+            '"\\u 123"',
+            '"\\u-123"',
+            '"\\u+123"',
+            '"\\u1_23"',
             '"\\ud834\\"',
             '"\\ud834\\u"',
             '"\\ud834\\ud"',
@@ -127,6 +132,11 @@ def test_bad_escapes(self):
             '"\\ud834\\udd2z"',
             '"\\ud834\\u0x20"',
             '"\\ud834\\u0X20"',
+            '"\\ud834\\u{0}"'.format("\uff10" * 4),
+            '"\\ud834\\u 123"',
+            '"\\ud834\\u-123"',
+            '"\\ud834\\u+123"',
+            '"\\ud834\\u1_23"',
         ]
         for s in bad_escapes:
             with self.assertRaises(self.JSONDecodeError, msg=s):
diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
index 849b6cb3e50a19..41f7b70e5cfe81 100644
--- a/Lib/test/test_largefile.py
+++ b/Lib/test/test_largefile.py
@@ -141,6 +141,9 @@ def test_truncate(self):
             f.truncate(1)
             self.assertEqual(f.tell(), 0)       # else pointer moved
             f.seek(0)
+            # Verify readall on a truncated file is well behaved. read()
+            # without a size can be unbounded, this should get just the byte
+            # that remains.
             self.assertEqual(len(f.read()), 1)  # else wasn't truncated
 
     def test_seekable(self):
@@ -151,6 +154,22 @@ def test_seekable(self):
                 f.seek(pos)
                 self.assertTrue(f.seekable())
 
+    @bigmemtest(size=size, memuse=2, dry_run=False)
+    def test_seek_readall(self, _size):
+        # Seek which doesn't change position should readall successfully.
+        with self.open(TESTFN, 'rb') as f:
+            self.assertEqual(f.seek(0, os.SEEK_CUR), 0)
+            self.assertEqual(len(f.read()), size + 1)
+
+        # Seek which changes (or might change) position should readall
+        # successfully.
+        with self.open(TESTFN, 'rb') as f:
+            self.assertEqual(f.seek(20, os.SEEK_SET), 20)
+            self.assertEqual(len(f.read()), size - 19)
+
+        with self.open(TESTFN, 'rb') as f:
+            self.assertEqual(f.seek(-3, os.SEEK_END), size - 2)
+            self.assertEqual(len(f.read()), 3)
 
 def skip_no_disk_space(path, required):
     def decorator(fun):
diff --git a/Lib/test/test_launcher.py b/Lib/test/test_launcher.py
index 2528a51240fbf7..58baae25df3df7 100644
--- a/Lib/test/test_launcher.py
+++ b/Lib/test/test_launcher.py
@@ -764,3 +764,11 @@ def test_shebang_command_in_venv(self):
             with self.script(f'#! /usr/bin/env {exe.stem} arg1') as script:
                 data = self.run_py([script], env=env)
             self.assertEqual(data["stdout"].strip(), f"{quote(exe)} arg1 {quote(script)}")
+
+    def test_shebang_executable_extension(self):
+        with self.script('#! /usr/bin/env python3.99') as script:
+            data = self.run_py([script], expect_returncode=103)
+        expect = "# Search PATH for python3.99.exe"
+        actual = [line.strip() for line in data["stderr"].splitlines()
+                  if line.startswith("# Search PATH")]
+        self.assertEqual([expect], actual)
diff --git a/Lib/test/test_linecache.py b/Lib/test/test_linecache.py
index 8ac521d72ef13e..6f5955791407ea 100644
--- a/Lib/test/test_linecache.py
+++ b/Lib/test/test_linecache.py
@@ -280,6 +280,37 @@ def test_loader(self):
         self.assertEqual(linecache.getlines(filename, module_globals),
                          ['source for x.y.z\n'])
 
+    def test_invalid_names(self):
+        for name, desc in [
+            ('\x00', 'NUL bytes filename'),
+            (__file__ + '\x00', 'filename with embedded NUL bytes'),
+            # A filename with surrogate codes. A UnicodeEncodeError is raised
+            # by os.stat() upon querying, which is a subclass of ValueError.
+            ("\uD834\uDD1E.py", 'surrogate codes (MUSICAL SYMBOL G CLEF)'),
+            # For POSIX platforms, an OSError will be raised but for Windows
+            # platforms, a ValueError is raised due to the path_t converter.
+            # See: https://github.com/python/cpython/issues/122170
+            ('a' * 1_000_000, 'very long filename'),
+        ]:
+            with self.subTest(f'updatecache: {desc}'):
+                linecache.clearcache()
+                lines = linecache.updatecache(name)
+                self.assertListEqual(lines, [])
+                self.assertNotIn(name, linecache.cache)
+
+            # hack into the cache (it shouldn't be allowed
+            # but we never know what people do...)
+            for key, fullname in [(name, 'ok'), ('key', name), (name, name)]:
+                with self.subTest(f'checkcache: {desc}',
+                                  key=key, fullname=fullname):
+                    linecache.clearcache()
+                    linecache.cache[key] = (0, 1234, [], fullname)
+                    linecache.checkcache(key)
+                    self.assertNotIn(key, linecache.cache)
+
+        # just to be sure that we did not mess with cache
+        linecache.clearcache()
+
 
 class LineCacheInvalidationTests(unittest.TestCase):
     def setUp(self):
diff --git a/Lib/test/test_list.py b/Lib/test/test_list.py
index 0601b33e79ebb6..ad7accf2099f43 100644
--- a/Lib/test/test_list.py
+++ b/Lib/test/test_list.py
@@ -234,6 +234,31 @@ def __eq__(self, other):
         list4 = [1]
         self.assertFalse(list3 == list4)
 
+    def test_lt_operator_modifying_operand(self):
+        # See gh-120298
+        class evil:
+            def __lt__(self, other):
+                other.clear()
+                return NotImplemented
+
+        a = [[evil()]]
+        with self.assertRaises(TypeError):
+            a[0] < a
+
+    def test_list_index_modifing_operand(self):
+        # See gh-120384
+        class evil:
+            def __init__(self, lst):
+                self.lst = lst
+            def __iter__(self):
+                yield from self.lst
+                self.lst.clear()
+
+        lst = list(range(5))
+        operand = evil(lst)
+        with self.assertRaises(ValueError):
+            lst[::-1] = operand
+
     @cpython_only
     def test_preallocation(self):
         iterable = [0] * 10
@@ -274,6 +299,15 @@ def __eq__(self, other):
         lst = [X(), X()]
         X() in lst
 
+    def test_tier2_invalidates_iterator(self):
+        # GH-121012
+        for _ in range(100):
+            a = [1, 2, 3]
+            it = iter(a)
+            for _ in it:
+                pass
+            a.append(4)
+            self.assertEqual(list(it), [])
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_listcomps.py b/Lib/test/test_listcomps.py
index ec2aac81682db8..45644d6c092782 100644
--- a/Lib/test/test_listcomps.py
+++ b/Lib/test/test_listcomps.py
@@ -1,8 +1,11 @@
 import doctest
 import textwrap
+import traceback
 import types
 import unittest
 
+from test.support import BrokenIter
+
 
 doctests = """
 ########### Tests borrowed from or inspired by test_genexps.py ############
@@ -168,6 +171,31 @@ def test_references___class__(self):
         """
         self._check_in_scopes(code, raises=NameError)
 
+    def test_references___class___defined(self):
+        code = """
+            __class__ = 2
+            res = [__class__ for x in [1]]
+        """
+        self._check_in_scopes(
+                code, outputs={"res": [2]}, scopes=["module", "function"])
+        self._check_in_scopes(code, raises=NameError, scopes=["class"])
+
+    def test_references___class___enclosing(self):
+        code = """
+            __class__ = 2
+            class C:
+                res = [__class__ for x in [1]]
+            res = C.res
+        """
+        self._check_in_scopes(code, raises=NameError)
+
+    def test_super_and_class_cell_in_sibling_comps(self):
+        code = """
+            [super for _ in [1]]
+            [__class__ for _ in [1]]
+        """
+        self._check_in_scopes(code, raises=NameError)
+
     def test_inner_cell_shadows_outer(self):
         code = """
             items = [(lambda: i) for i in range(5)]
@@ -686,6 +714,42 @@ def test_multiple_comprehension_name_reuse(self):
         self._check_in_scopes(code, {"x": 2, "y": [3]}, ns={"x": 3}, scopes=["class"])
         self._check_in_scopes(code, {"x": 2, "y": [2]}, ns={"x": 3}, scopes=["function", "module"])
 
+    def test_exception_locations(self):
+        # The location of an exception raised from __init__ or
+        # __next__ should should be the iterator expression
+
+        def init_raises():
+            try:
+                [x for x in BrokenIter(init_raises=True)]
+            except Exception as e:
+                return e
+
+        def next_raises():
+            try:
+                [x for x in BrokenIter(next_raises=True)]
+            except Exception as e:
+                return e
+
+        def iter_raises():
+            try:
+                [x for x in BrokenIter(iter_raises=True)]
+            except Exception as e:
+                return e
+
+        for func, expected in [(init_raises, "BrokenIter(init_raises=True)"),
+                               (next_raises, "BrokenIter(next_raises=True)"),
+                               (iter_raises, "BrokenIter(iter_raises=True)"),
+                              ]:
+            with self.subTest(func):
+                exc = func()
+                f = traceback.extract_tb(exc.__traceback__)[0]
+                indent = 16
+                co = func.__code__
+                self.assertEqual(f.lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.end_lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.line[f.colno - indent : f.end_colno - indent],
+                                 expected)
+
 __test__ = {'doctests' : doctests}
 
 def load_tests(loader, tests, pattern):
diff --git a/Lib/test/test_locale.py b/Lib/test/test_locale.py
index da4bd79746a476..00e93d8e78443d 100644
--- a/Lib/test/test_locale.py
+++ b/Lib/test/test_locale.py
@@ -355,6 +355,8 @@ def setUp(self):
         is_emscripten or is_wasi,
         "musl libc issue on Emscripten/WASI, bpo-46390"
     )
+    @unittest.skipIf(sys.platform.startswith("netbsd"),
+                     "gh-124108: NetBSD doesn't support UTF-8 for LC_COLLATE")
     def test_strcoll_with_diacritic(self):
         self.assertLess(locale.strcoll('à', 'b'), 0)
 
@@ -364,6 +366,8 @@ def test_strcoll_with_diacritic(self):
         is_emscripten or is_wasi,
         "musl libc issue on Emscripten/WASI, bpo-46390"
     )
+    @unittest.skipIf(sys.platform.startswith("netbsd"),
+                     "gh-124108: NetBSD doesn't support UTF-8 for LC_COLLATE")
     def test_strxfrm_with_diacritic(self):
         self.assertLess(locale.strxfrm('à'), locale.strxfrm('b'))
 
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index e651d96f100a83..678c23dad67faa 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -657,15 +657,15 @@ def test_builtin_handlers(self):
         self.assertFalse(h.shouldFlush(r))
         h.close()
 
-    def test_path_objects(self):
+    def test_pathlike_objects(self):
         """
-        Test that Path objects are accepted as filename arguments to handlers.
+        Test that path-like objects are accepted as filename arguments to handlers.
 
         See Issue #27493.
         """
         fn = make_temp_file()
         os.unlink(fn)
-        pfn = pathlib.Path(fn)
+        pfn = os_helper.FakePath(fn)
         cases = (
                     (logging.FileHandler, (pfn, 'w')),
                     (logging.handlers.RotatingFileHandler, (pfn, 'a')),
@@ -2367,6 +2367,32 @@ class CustomListener(logging.handlers.QueueListener):
 class CustomQueue(queue.Queue):
     pass
 
+class CustomQueueProtocol:
+    def __init__(self, maxsize=0):
+        self.queue = queue.Queue(maxsize)
+
+    def __getattr__(self, attribute):
+        queue = object.__getattribute__(self, 'queue')
+        return getattr(queue, attribute)
+
+class CustomQueueFakeProtocol(CustomQueueProtocol):
+    # An object implementing the minimial Queue API for
+    # the logging module but with incorrect signatures.
+    #
+    # The object will be considered a valid queue class since we
+    # do not check the signatures (only callability of methods)
+    # but will NOT be usable in production since a TypeError will
+    # be raised due to the extra argument in 'put_nowait'.
+    def put_nowait(self):
+        pass
+
+class CustomQueueWrongProtocol(CustomQueueProtocol):
+    put_nowait = None
+
+class MinimalQueueProtocol:
+    def put_nowait(self, x): pass
+    def get(self): pass
+
 def queueMaker():
     return queue.Queue()
 
@@ -3728,16 +3754,16 @@ def test_baseconfig(self):
             'adict': {
                 'd': 'e', 'f': 3 ,
                 'alpha numeric 1 with spaces' : 5,
-                'aplha numeric 1 %( - © ©ß¯' : 9,
+                'alpha numeric 1 %( - © ©ß¯' : 9,
                 'alpha numeric ] 1 with spaces' : 15,
-                'aplha ]] numeric 1 %( - © ©ß¯]' : 19,
-                ' aplha [ numeric 1 %( - © ©ß¯] ' : 11,
-                ' aplha ' : 32,
+                'alpha ]] numeric 1 %( - © ©ß¯]' : 19,
+                ' alpha [ numeric 1 %( - © ©ß¯] ' : 11,
+                ' alpha ' : 32,
                 '' : 10,
                 'nest4' : {
                     'd': 'e', 'f': 3 ,
                     'alpha numeric 1 with spaces' : 5,
-                    'aplha numeric 1 %( - © ©ß¯' : 9,
+                    'alpha numeric 1 %( - © ©ß¯' : 9,
                     '' : 10,
                     'somelist' :  ('g', ('h', 'i'), 'j'),
                     'somedict' : {
@@ -3759,14 +3785,14 @@ def test_baseconfig(self):
         self.assertEqual(bc.convert('cfg://adict.d'), 'e')
         self.assertEqual(bc.convert('cfg://adict[f]'), 3)
         self.assertEqual(bc.convert('cfg://adict[alpha numeric 1 with spaces]'), 5)
-        self.assertEqual(bc.convert('cfg://adict[aplha numeric 1 %( - © ©ß¯]'), 9)
+        self.assertEqual(bc.convert('cfg://adict[alpha numeric 1 %( - © ©ß¯]'), 9)
         self.assertEqual(bc.convert('cfg://adict[]'), 10)
         self.assertEqual(bc.convert('cfg://adict.nest4.d'), 'e')
         self.assertEqual(bc.convert('cfg://adict.nest4[d]'), 'e')
         self.assertEqual(bc.convert('cfg://adict[nest4].d'), 'e')
         self.assertEqual(bc.convert('cfg://adict[nest4][f]'), 3)
         self.assertEqual(bc.convert('cfg://adict[nest4][alpha numeric 1 with spaces]'), 5)
-        self.assertEqual(bc.convert('cfg://adict[nest4][aplha numeric 1 %( - © ©ß¯]'), 9)
+        self.assertEqual(bc.convert('cfg://adict[nest4][alpha numeric 1 %( - © ©ß¯]'), 9)
         self.assertEqual(bc.convert('cfg://adict[nest4][]'), 10)
         self.assertEqual(bc.convert('cfg://adict[nest4][somelist][0]'), 'g')
         self.assertEqual(bc.convert('cfg://adict[nest4][somelist][1][0]'), 'h')
@@ -3786,8 +3812,8 @@ def test_baseconfig(self):
         self.assertRaises(ValueError, bc.convert, 'cfg://!')
         self.assertRaises(KeyError, bc.convert, 'cfg://adict[2]')
         self.assertRaises(KeyError, bc.convert, 'cfg://adict[alpha numeric ] 1 with spaces]')
-        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ aplha ]] numeric 1 %( - © ©ß¯] ]')
-        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ aplha [ numeric 1 %( - © ©ß¯] ]')
+        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ alpha ]] numeric 1 %( - © ©ß¯] ]')
+        self.assertRaises(ValueError, bc.convert, 'cfg://adict[ alpha [ numeric 1 %( - © ©ß¯] ]')
 
     def test_namedtuple(self):
         # see bpo-39142
@@ -3898,19 +3924,18 @@ def do_queuehandler_configuration(self, qspec, lspec):
                 self.addCleanup(os.remove, fn)
 
     @threading_helper.requires_working_threading()
+    @support.requires_subprocess()
     def test_config_queue_handler(self):
-        q = CustomQueue()
-        dq = {
-            '()': __name__ + '.CustomQueue',
-            'maxsize': 10
-        }
+        qs = [CustomQueue(), CustomQueueProtocol()]
+        dqs = [{'()': f'{__name__}.{cls}', 'maxsize': 10}
+               for cls in ['CustomQueue', 'CustomQueueProtocol']]
         dl = {
             '()': __name__ + '.listenerMaker',
             'arg1': None,
             'arg2': None,
             'respect_handler_level': True
         }
-        qvalues = (None, __name__ + '.queueMaker', __name__ + '.CustomQueue', dq, q)
+        qvalues = (None, __name__ + '.queueMaker', __name__ + '.CustomQueue', *dqs, *qs)
         lvalues = (None, __name__ + '.CustomListener', dl, CustomListener)
         for qspec, lspec in itertools.product(qvalues, lvalues):
             self.do_queuehandler_configuration(qspec, lspec)
@@ -3926,6 +3951,140 @@ def test_config_queue_handler(self):
             msg = str(ctx.exception)
             self.assertEqual(msg, "Unable to configure handler 'ah'")
 
+    def _apply_simple_queue_listener_configuration(self, qspec):
+        self.apply_config({
+            "version": 1,
+            "handlers": {
+                "queue_listener": {
+                    "class": "logging.handlers.QueueHandler",
+                    "queue": qspec,
+                },
+            },
+        })
+
+    @threading_helper.requires_working_threading()
+    @support.requires_subprocess()
+    @patch("multiprocessing.Manager")
+    def test_config_queue_handler_does_not_create_multiprocessing_manager(self, manager):
+        # gh-120868, gh-121723, gh-124653
+
+        for qspec in [
+            {"()": "queue.Queue", "maxsize": -1},
+            queue.Queue(),
+            # queue.SimpleQueue does not inherit from queue.Queue
+            queue.SimpleQueue(),
+            # CustomQueueFakeProtocol passes the checks but will not be usable
+            # since the signatures are incompatible. Checking the Queue API
+            # without testing the type of the actual queue is a trade-off
+            # between usability and the work we need to do in order to safely
+            # check that the queue object correctly implements the API.
+            CustomQueueFakeProtocol(),
+            MinimalQueueProtocol(),
+        ]:
+            with self.subTest(qspec=qspec):
+                self._apply_simple_queue_listener_configuration(qspec)
+                manager.assert_not_called()
+
+    @patch("multiprocessing.Manager")
+    def test_config_queue_handler_invalid_config_does_not_create_multiprocessing_manager(self, manager):
+        # gh-120868, gh-121723
+
+        for qspec in [object(), CustomQueueWrongProtocol()]:
+            with self.subTest(qspec=qspec), self.assertRaises(ValueError):
+                self._apply_simple_queue_listener_configuration(qspec)
+                manager.assert_not_called()
+
+    @skip_if_tsan_fork
+    @support.requires_subprocess()
+    @unittest.skipUnless(support.Py_DEBUG, "requires a debug build for testing"
+                                           " assertions in multiprocessing")
+    def test_config_reject_simple_queue_handler_multiprocessing_context(self):
+        # multiprocessing.SimpleQueue does not implement 'put_nowait'
+        # and thus cannot be used as a queue-like object (gh-124653)
+
+        import multiprocessing
+
+        if support.MS_WINDOWS:
+            start_methods = ['spawn']
+        else:
+            start_methods = ['spawn', 'fork', 'forkserver']
+
+        for start_method in start_methods:
+            with self.subTest(start_method=start_method):
+                ctx = multiprocessing.get_context(start_method)
+                qspec = ctx.SimpleQueue()
+                with self.assertRaises(ValueError):
+                    self._apply_simple_queue_listener_configuration(qspec)
+
+    @skip_if_tsan_fork
+    @support.requires_subprocess()
+    @unittest.skipUnless(support.Py_DEBUG, "requires a debug build for testing"
+                                           " assertions in multiprocessing")
+    def test_config_queue_handler_multiprocessing_context(self):
+        # regression test for gh-121723
+        if support.MS_WINDOWS:
+            start_methods = ['spawn']
+        else:
+            start_methods = ['spawn', 'fork', 'forkserver']
+        for start_method in start_methods:
+            with self.subTest(start_method=start_method):
+                ctx = multiprocessing.get_context(start_method)
+                with ctx.Manager() as manager:
+                    q = manager.Queue()
+                    records = []
+                    # use 1 process and 1 task per child to put 1 record
+                    with ctx.Pool(1, initializer=self._mpinit_issue121723,
+                                  initargs=(q, "text"), maxtasksperchild=1):
+                        records.append(q.get(timeout=60))
+                    self.assertTrue(q.empty())
+                self.assertEqual(len(records), 1)
+
+    @staticmethod
+    def _mpinit_issue121723(qspec, message_to_log):
+        # static method for pickling support
+        logging.config.dictConfig({
+            'version': 1,
+            'disable_existing_loggers': True,
+            'handlers': {
+                'log_to_parent': {
+                    'class': 'logging.handlers.QueueHandler',
+                    'queue': qspec
+                }
+            },
+            'root': {'handlers': ['log_to_parent'], 'level': 'DEBUG'}
+        })
+        # log a message (this creates a record put in the queue)
+        logging.getLogger().info(message_to_log)
+
+    @skip_if_tsan_fork
+    @support.requires_subprocess()
+    def test_multiprocessing_queues(self):
+        # See gh-119819
+
+        cd = copy.deepcopy(self.config_queue_handler)
+        from multiprocessing import Queue as MQ, Manager as MM
+        q1 = MQ()  # this can't be pickled
+        q2 = MM().Queue()  # a proxy queue for use when pickling is needed
+        q3 = MM().JoinableQueue()  # a joinable proxy queue
+        for qspec in (q1, q2, q3):
+            fn = make_temp_file('.log', 'test_logging-cmpqh-')
+            cd['handlers']['h1']['filename'] = fn
+            cd['handlers']['ah']['queue'] = qspec
+            qh = None
+            try:
+                self.apply_config(cd)
+                qh = logging.getHandlerByName('ah')
+                self.assertEqual(sorted(logging.getHandlerNames()), ['ah', 'h1'])
+                self.assertIsNotNone(qh.listener)
+                self.assertIs(qh.queue, qspec)
+                self.assertIs(qh.listener.queue, qspec)
+            finally:
+                h = logging.getHandlerByName('h1')
+                if h:
+                    self.addCleanup(closeFileHandler, h, fn)
+                else:
+                    self.addCleanup(os.remove, fn)
+
     def test_90195(self):
         # See gh-90195
         config = {
@@ -3976,6 +4135,35 @@ def test_111615(self):
         }
         logging.config.dictConfig(config)
 
+    # gh-118868: check if kwargs are passed to logging QueueHandler
+    def test_kwargs_passing(self):
+        class CustomQueueHandler(logging.handlers.QueueHandler):
+            def __init__(self, *args, **kwargs):
+                super().__init__(queue.Queue())
+                self.custom_kwargs = kwargs
+
+        custom_kwargs = {'foo': 'bar'}
+
+        config = {
+            'version': 1,
+            'handlers': {
+                'custom': {
+                    'class': CustomQueueHandler,
+                    **custom_kwargs
+                },
+            },
+            'root': {
+                'level': 'DEBUG',
+                'handlers': ['custom']
+            }
+        }
+
+        logging.config.dictConfig(config)
+
+        handler = logging.getHandlerByName('custom')
+        self.assertEqual(handler.custom_kwargs, custom_kwargs)
+
+
 class ManagerTest(BaseTest):
     def test_manager_loggerclass(self):
         logged = []
@@ -4181,6 +4369,7 @@ def test_queue_listener_with_multiple_handlers(self):
     import multiprocessing
     from unittest.mock import patch
 
+    @skip_if_tsan_fork
     @threading_helper.requires_working_threading()
     class QueueListenerTest(BaseTest):
         """
@@ -4590,13 +4779,18 @@ def test_msecs_has_no_floating_point_precision_loss(self):
             (1_677_902_297_100_000_000, 100.0),  # exactly 100ms
             (1_677_903_920_999_998_503, 999.0),  # check truncating doesn't round
             (1_677_903_920_000_998_503, 0.0),  # check truncating doesn't round
+            (1_677_903_920_999_999_900, 0.0), # check rounding up
         )
         for ns, want in tests:
             with patch('time.time_ns') as patched_ns:
                 patched_ns.return_value = ns
                 record = logging.makeLogRecord({'msg': 'test'})
-            self.assertEqual(record.msecs, want)
-            self.assertEqual(record.created, ns / 1e9)
+            with self.subTest(ns):
+                self.assertEqual(record.msecs, want)
+                self.assertEqual(record.created, ns / 1e9)
+                self.assertAlmostEqual(record.created - int(record.created),
+                                       record.msecs / 1e3,
+                                       delta=1e-3)
 
     def test_relativeCreated_has_higher_precision(self):
         # See issue gh-102402.
@@ -5076,6 +5270,7 @@ def _extract_logrecord_process_name(key, logMultiprocessing, conn=None):
         else:
             return results
 
+    @skip_if_tsan_fork
     def test_multiprocessing(self):
         support.skip_if_broken_multiprocessing_synchronize()
         multiprocessing_imported = 'multiprocessing' in sys.modules
@@ -6020,13 +6215,28 @@ def test_emit_after_closing_in_write_mode(self):
             self.assertEqual(fp.read().strip(), '1')
 
 class RotatingFileHandlerTest(BaseFileTest):
-    @unittest.skipIf(support.is_wasi, "WASI does not have /dev/null.")
     def test_should_not_rollover(self):
-        # If maxbytes is zero rollover never occurs
+        # If file is empty rollover never occurs
+        rh = logging.handlers.RotatingFileHandler(
+            self.fn, encoding="utf-8", maxBytes=1)
+        self.assertFalse(rh.shouldRollover(None))
+        rh.close()
+
+        # If maxBytes is zero rollover never occurs
         rh = logging.handlers.RotatingFileHandler(
                 self.fn, encoding="utf-8", maxBytes=0)
         self.assertFalse(rh.shouldRollover(None))
         rh.close()
+
+        with open(self.fn, 'wb') as f:
+            f.write(b'\n')
+        rh = logging.handlers.RotatingFileHandler(
+                self.fn, encoding="utf-8", maxBytes=0)
+        self.assertFalse(rh.shouldRollover(None))
+        rh.close()
+
+    @unittest.skipIf(support.is_wasi, "WASI does not have /dev/null.")
+    def test_should_not_rollover_non_file(self):
         # bpo-45401 - test with special file
         # We set maxBytes to 1 so that rollover would normally happen, except
         # for the check for regular files
@@ -6036,18 +6246,47 @@ def test_should_not_rollover(self):
         rh.close()
 
     def test_should_rollover(self):
-        rh = logging.handlers.RotatingFileHandler(self.fn, encoding="utf-8", maxBytes=1)
+        with open(self.fn, 'wb') as f:
+            f.write(b'\n')
+        rh = logging.handlers.RotatingFileHandler(self.fn, encoding="utf-8", maxBytes=2)
         self.assertTrue(rh.shouldRollover(self.next_rec()))
         rh.close()
 
     def test_file_created(self):
         # checks that the file is created and assumes it was created
         # by us
+        os.unlink(self.fn)
         rh = logging.handlers.RotatingFileHandler(self.fn, encoding="utf-8")
         rh.emit(self.next_rec())
         self.assertLogFile(self.fn)
         rh.close()
 
+    def test_max_bytes(self, delay=False):
+        kwargs = {'delay': delay} if delay else {}
+        os.unlink(self.fn)
+        rh = logging.handlers.RotatingFileHandler(
+            self.fn, encoding="utf-8", backupCount=2, maxBytes=100, **kwargs)
+        self.assertIs(os.path.exists(self.fn), not delay)
+        small = logging.makeLogRecord({'msg': 'a'})
+        large = logging.makeLogRecord({'msg': 'b'*100})
+        self.assertFalse(rh.shouldRollover(small))
+        self.assertFalse(rh.shouldRollover(large))
+        rh.emit(small)
+        self.assertLogFile(self.fn)
+        self.assertFalse(os.path.exists(self.fn + ".1"))
+        self.assertFalse(rh.shouldRollover(small))
+        self.assertTrue(rh.shouldRollover(large))
+        rh.emit(large)
+        self.assertTrue(os.path.exists(self.fn))
+        self.assertLogFile(self.fn + ".1")
+        self.assertFalse(os.path.exists(self.fn + ".2"))
+        self.assertTrue(rh.shouldRollover(small))
+        self.assertTrue(rh.shouldRollover(large))
+        rh.close()
+
+    def test_max_bytes_delay(self):
+        self.test_max_bytes(delay=True)
+
     def test_rollover_filenames(self):
         def namer(name):
             return name + ".test"
@@ -6056,11 +6295,15 @@ def namer(name):
         rh.namer = namer
         rh.emit(self.next_rec())
         self.assertLogFile(self.fn)
+        self.assertFalse(os.path.exists(namer(self.fn + ".1")))
         rh.emit(self.next_rec())
         self.assertLogFile(namer(self.fn + ".1"))
+        self.assertFalse(os.path.exists(namer(self.fn + ".2")))
         rh.emit(self.next_rec())
         self.assertLogFile(namer(self.fn + ".2"))
         self.assertFalse(os.path.exists(namer(self.fn + ".3")))
+        rh.emit(self.next_rec())
+        self.assertFalse(os.path.exists(namer(self.fn + ".3")))
         rh.close()
 
     def test_namer_rotator_inheritance(self):
diff --git a/Lib/test/test_long.py b/Lib/test/test_long.py
index d299c34cec076d..41b973da2c7df0 100644
--- a/Lib/test/test_long.py
+++ b/Lib/test/test_long.py
@@ -1639,6 +1639,8 @@ class MyInt(int):
                     MyInt.__basicsize__ + MyInt.__itemsize__ * ndigits
                 )
 
+        # GH-117195 -- This shouldn't crash
+        object.__sizeof__(1)
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index b68c442013c09f..96ec55a09b0b26 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -187,6 +187,9 @@ def result_check(expected, got, ulp_tol=5, abs_tol=0.0):
 
     # Check exactly equal (applies also to strings representing exceptions)
     if got == expected:
+        if not got and not expected:
+            if math.copysign(1, got) != math.copysign(1, expected):
+                return f"expected {expected}, got {got} (zero has wrong sign)"
         return None
 
     failure = "not equal"
@@ -809,11 +812,13 @@ def testHypot(self):
         # Test allowable types (those with __float__)
         self.assertEqual(hypot(12.0, 5.0), 13.0)
         self.assertEqual(hypot(12, 5), 13)
-        self.assertEqual(hypot(1, -1), math.sqrt(2))
-        self.assertEqual(hypot(1, FloatLike(-1.)), math.sqrt(2))
+        self.assertEqual(hypot(0.75, -1), 1.25)
+        self.assertEqual(hypot(-1, 0.75), 1.25)
+        self.assertEqual(hypot(0.75, FloatLike(-1.)), 1.25)
+        self.assertEqual(hypot(FloatLike(-1.), 0.75), 1.25)
         self.assertEqual(hypot(Decimal(12), Decimal(5)), 13)
         self.assertEqual(hypot(Fraction(12, 32), Fraction(5, 32)), Fraction(13, 32))
-        self.assertEqual(hypot(bool(1), bool(0), bool(1), bool(1)), math.sqrt(3))
+        self.assertEqual(hypot(True, False, True, True, True), 2.0)
 
         # Test corner cases
         self.assertEqual(hypot(0.0, 0.0), 0.0)     # Max input is zero
@@ -969,9 +974,9 @@ def testDist(self):
         self.assertEqual(dist((D(14), D(1)), (D(2), D(-4))), D(13))
         self.assertEqual(dist((F(14, 32), F(1, 32)), (F(2, 32), F(-4, 32))),
                          F(13, 32))
-        self.assertEqual(dist((True, True, False, True, False),
-                              (True, False, True, True, False)),
-                         sqrt(2.0))
+        self.assertEqual(dist((True, True, False, False, True, True),
+                              (True, False, True, False, False, False)),
+                         2.0)
 
         # Test corner cases
         self.assertEqual(dist((13.25, 12.5, -3.25),
@@ -1397,7 +1402,7 @@ def __repr__(self):
                 return f'Flt({int(self)})'
 
         def baseline_sumprod(p, q):
-            """This defines the target behavior including expections and special values.
+            """This defines the target behavior including exceptions and special values.
             However, it is subject to rounding errors, so float inputs should be exactly
             representable with only a few bits.
             """
@@ -1881,7 +1886,7 @@ def testTan(self):
         try:
             self.assertTrue(math.isnan(math.tan(INF)))
             self.assertTrue(math.isnan(math.tan(NINF)))
-        except:
+        except ValueError:
             self.assertRaises(ValueError, math.tan, INF)
             self.assertRaises(ValueError, math.tan, NINF)
         self.assertTrue(math.isnan(math.tan(NAN)))
@@ -2051,6 +2056,13 @@ def test_testfile(self):
             except OverflowError:
                 result = 'OverflowError'
 
+            # C99+ says for math.h's sqrt: If the argument is +∞ or ±0, it is
+            # returned, unmodified.  On another hand, for csqrt: If z is ±0+0i,
+            # the result is +0+0i.  Lets correct zero sign of er to follow
+            # first convention.
+            if id in ['sqrt0002', 'sqrt0003', 'sqrt1001', 'sqrt1023']:
+                er = math.copysign(er, ar)
+
             # Default tolerances
             ulp_tol, abs_tol = 5, 0.0
 
@@ -2694,7 +2706,7 @@ def test_fma_infinities(self):
     # gh-73468: On some platforms, libc fma() doesn't implement IEE 754-2008
     # properly: it doesn't use the right sign when the result is zero.
     @unittest.skipIf(
-        sys.platform.startswith(("freebsd", "wasi"))
+        sys.platform.startswith(("freebsd", "wasi", "netbsd"))
         or (sys.platform == "android" and platform.machine() == "x86_64"),
         f"this platform doesn't implement IEE 754-2008 properly")
     def test_fma_zero_result(self):
diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py
index 0eb2a367603cfc..2d4bf5f1408df8 100644
--- a/Lib/test/test_memoryview.py
+++ b/Lib/test/test_memoryview.py
@@ -18,6 +18,10 @@
 from test.support import import_helper
 
 
+class MyObject:
+    pass
+
+
 class AbstractMemoryTests:
     source_bytes = b"abcdef"
 
@@ -228,8 +232,6 @@ def __init__(self, base):
                     self.m = memoryview(base)
             class MySource(tp):
                 pass
-            class MyObject:
-                pass
 
             # Create a reference cycle through a memoryview object.
             # This exercises mbuf_clear().
@@ -656,5 +658,26 @@ def __bool__(self):
             m[0] = MyBool()
         self.assertEqual(ba[:8], b'\0'*8)
 
+    def test_buffer_reference_loop(self):
+        m = memoryview(b'abc').__buffer__(0)
+        o = MyObject()
+        o.m = m
+        o.o = o
+        wr = weakref.ref(o)
+        del m, o
+        gc.collect()
+        self.assertIsNone(wr())
+
+    def test_picklebuffer_reference_loop(self):
+        pb = pickle.PickleBuffer(memoryview(b'abc'))
+        o = MyObject()
+        o.pb = pb
+        o.o = o
+        wr = weakref.ref(o)
+        del pb, o
+        gc.collect()
+        self.assertIsNone(wr())
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_mimetypes.py b/Lib/test/test_mimetypes.py
index 2e0ad0606ae9c2..58f6a4dfae08ba 100644
--- a/Lib/test/test_mimetypes.py
+++ b/Lib/test/test_mimetypes.py
@@ -1,7 +1,6 @@
 import io
 import mimetypes
 import os
-import pathlib
 import sys
 import unittest.mock
 
@@ -83,11 +82,19 @@ def test_read_mime_types(self):
 
         with os_helper.temp_dir() as directory:
             data = "x-application/x-unittest pyunit\n"
-            file = pathlib.Path(directory, "sample.mimetype")
-            file.write_text(data, encoding="utf-8")
+            file = os.path.join(directory, "sample.mimetype")
+            with open(file, 'w', encoding="utf-8") as f:
+                f.write(data)
             mime_dict = mimetypes.read_mime_types(file)
             eq(mime_dict[".pyunit"], "x-application/x-unittest")
 
+            data = "x-application/x-unittest2 pyunit2\n"
+            file = os.path.join(directory, "sample2.mimetype")
+            with open(file, 'w', encoding="utf-8") as f:
+                f.write(data)
+            mime_dict = mimetypes.read_mime_types(os_helper.FakePath(file))
+            eq(mime_dict[".pyunit2"], "x-application/x-unittest2")
+
         # bpo-41048: read_mime_types should read the rule file with 'utf-8' encoding.
         # Not with locale encoding. _bootlocale has been imported because io.open(...)
         # uses it.
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index ee86227e026b67..a1cf5384ada5b5 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -3,6 +3,7 @@
 )
 from test.support.import_helper import import_module
 from test.support.os_helper import TESTFN, unlink
+from test.support.script_helper import assert_python_ok
 import unittest
 import errno
 import os
@@ -12,6 +13,7 @@
 import socket
 import string
 import sys
+import textwrap
 import weakref
 
 # Skip test if we can't import mmap.
@@ -1058,6 +1060,81 @@ def __exit__(self, exc_type, exc_value, traceback):
                 with self.assertRaisesRegex(ValueError, "mmap closed or invalid"):
                     m.write_byte(X())
 
+    @unittest.skipUnless(os.name == 'nt', 'requires Windows')
+    @unittest.skipUnless(hasattr(mmap.mmap, '_protect'), 'test needs debug build')
+    def test_access_violations(self):
+        from test.support.os_helper import TESTFN
+
+        code = textwrap.dedent("""
+            import faulthandler
+            import mmap
+            import os
+            import sys
+            from contextlib import suppress
+
+            # Prevent logging access violations to stderr.
+            faulthandler.disable()
+
+            PAGESIZE = mmap.PAGESIZE
+            PAGE_NOACCESS = 0x01
+
+            with open(sys.argv[1], 'bw+') as f:
+                f.write(b'A'* PAGESIZE)
+                f.flush()
+
+                m = mmap.mmap(f.fileno(), PAGESIZE)
+                m._protect(PAGE_NOACCESS, 0, PAGESIZE)
+                with suppress(OSError):
+                    m.read(PAGESIZE)
+                    assert False, 'mmap.read() did not raise'
+                with suppress(OSError):
+                    m.read_byte()
+                    assert False, 'mmap.read_byte() did not raise'
+                with suppress(OSError):
+                    m.readline()
+                    assert False, 'mmap.readline() did not raise'
+                with suppress(OSError):
+                    m.write(b'A'* PAGESIZE)
+                    assert False, 'mmap.write() did not raise'
+                with suppress(OSError):
+                    m.write_byte(0)
+                    assert False, 'mmap.write_byte() did not raise'
+                with suppress(OSError):
+                    m[0]  # test mmap_subscript
+                    assert False, 'mmap.__getitem__() did not raise'
+                with suppress(OSError):
+                    m[0:10]  # test mmap_subscript
+                    assert False, 'mmap.__getitem__() did not raise'
+                with suppress(OSError):
+                    m[0:10:2]  # test mmap_subscript
+                    assert False, 'mmap.__getitem__() did not raise'
+                with suppress(OSError):
+                    m[0] = 1
+                    assert False, 'mmap.__setitem__() did not raise'
+                with suppress(OSError):
+                    m[0:10] = b'A'* 10
+                    assert False, 'mmap.__setitem__() did not raise'
+                with suppress(OSError):
+                    m[0:10:2] = b'A'* 5
+                    assert False, 'mmap.__setitem__() did not raise'
+                with suppress(OSError):
+                    m.move(0, 10, 1)
+                    assert False, 'mmap.move() did not raise'
+                with suppress(OSError):
+                    list(m)  # test mmap_item
+                    assert False, 'mmap.__getitem__() did not raise'
+                with suppress(OSError):
+                    m.find(b'A')
+                    assert False, 'mmap.find() did not raise'
+                with suppress(OSError):
+                    m.rfind(b'A')
+                    assert False, 'mmap.rfind() did not raise'
+        """)
+        rt, stdout, stderr = assert_python_ok("-c", code, TESTFN)
+        self.assertEqual(stdout.strip(), b'')
+        self.assertEqual(stderr.strip(), b'')
+
+
 class LargeMmapTests(unittest.TestCase):
 
     def setUp(self):
diff --git a/Lib/test/test_module/__init__.py b/Lib/test/test_module/__init__.py
index 98d1cbe824df12..952ba43f72504d 100644
--- a/Lib/test/test_module/__init__.py
+++ b/Lib/test/test_module/__init__.py
@@ -4,6 +4,7 @@
 import weakref
 from test.support import gc_collect
 from test.support import import_helper
+from test.support import suppress_immortalization
 from test.support.script_helper import assert_python_ok
 
 import sys
@@ -103,6 +104,7 @@ def f():
         gc_collect()
         self.assertEqual(f().__dict__["bar"], 4)
 
+    @suppress_immortalization()
     def test_clear_dict_in_ref_cycle(self):
         destroyed = []
         m = ModuleType("foo")
@@ -118,6 +120,7 @@ def __del__(self):
         gc_collect()
         self.assertEqual(destroyed, [1])
 
+    @suppress_immortalization()
     def test_weakref(self):
         m = ModuleType("foo")
         wr = weakref.ref(m)
diff --git a/Lib/test/test_monitoring.py b/Lib/test/test_monitoring.py
index 6974bc5517ae5f..094d25b88c6e61 100644
--- a/Lib/test/test_monitoring.py
+++ b/Lib/test/test_monitoring.py
@@ -1841,6 +1841,21 @@ def f(a=1, b=2):
         self.assertEqual(call_data[0], (f, 1))
         self.assertEqual(call_data[1], (f, sys.monitoring.MISSING))
 
+    def test_instruction_explicit_callback(self):
+        # gh-122247
+        # Calling the instruction event callback explicitly should not
+        # crash CPython
+        def callback(code, instruction_offset):
+            pass
+
+        sys.monitoring.use_tool_id(0, "test")
+        self.addCleanup(sys.monitoring.free_tool_id, 0)
+        sys.monitoring.register_callback(0, sys.monitoring.events.INSTRUCTION, callback)
+        sys.monitoring.set_events(0, sys.monitoring.events.INSTRUCTION)
+        callback(None, 0)  # call the *same* handler while it is registered
+        sys.monitoring.restart_events()
+        sys.monitoring.set_events(0, 0)
+
 
 class TestOptimizer(MonitoringTestBase, unittest.TestCase):
 
@@ -1938,19 +1953,28 @@ def setUp(self):
             ( 1, E.RAISE, capi.fire_event_raise, ValueError(2)),
             ( 1, E.EXCEPTION_HANDLED, capi.fire_event_exception_handled, ValueError(5)),
             ( 1, E.PY_UNWIND, capi.fire_event_py_unwind, ValueError(6)),
-            ( 1, E.STOP_ITERATION, capi.fire_event_stop_iteration, ValueError(7)),
+            ( 1, E.STOP_ITERATION, capi.fire_event_stop_iteration, 7),
+            ( 1, E.STOP_ITERATION, capi.fire_event_stop_iteration, StopIteration(8)),
         ]
 
+        self.EXPECT_RAISED_EXCEPTION = [E.PY_THROW, E.RAISE, E.EXCEPTION_HANDLED, E.PY_UNWIND]
+
 
-    def check_event_count(self, event, func, args, expected):
+    def check_event_count(self, event, func, args, expected, callback_raises=None):
         class Counter:
-            def __init__(self):
+            def __init__(self, callback_raises):
+                self.callback_raises = callback_raises
                 self.count = 0
+
             def __call__(self, *args):
                 self.count += 1
+                if self.callback_raises:
+                    exc = self.callback_raises
+                    self.callback_raises = None
+                    raise exc
 
         try:
-            counter = Counter()
+            counter = Counter(callback_raises)
             sys.monitoring.register_callback(TEST_TOOL, event, counter)
             if event == E.C_RETURN or event == E.C_RAISE:
                 sys.monitoring.set_events(TEST_TOOL, E.CALL)
@@ -1987,8 +2011,9 @@ def test_fire_event(self):
 
     def test_missing_exception(self):
         for _, event, function, *args in self.cases:
-            if not (args and isinstance(args[-1], BaseException)):
+            if event not in self.EXPECT_RAISED_EXCEPTION:
                 continue
+            assert args and isinstance(args[-1], BaseException)
             offset = 0
             self.codelike = _testcapi.CodeLike(1)
             with self.subTest(function.__name__):
@@ -1997,6 +2022,17 @@ def test_missing_exception(self):
                 expected = ValueError(f"Firing event {evt} with no exception set")
                 self.check_event_count(event, function, args_, expected)
 
+    def test_fire_event_failing_callback(self):
+        for expected, event, function, *args in self.cases:
+            offset = 0
+            self.codelike = _testcapi.CodeLike(1)
+            with self.subTest(function.__name__):
+                args_ = (self.codelike, offset) + tuple(args)
+                exc = OSError(42)
+                with self.assertRaises(type(exc)):
+                    self.check_event_count(event, function, args_, expected,
+                                           callback_raises=exc)
+
 
     CANNOT_DISABLE = { E.PY_THROW, E.RAISE, E.RERAISE,
                        E.EXCEPTION_HANDLED, E.PY_UNWIND }
diff --git a/Lib/test/test_msvcrt.py b/Lib/test/test_msvcrt.py
index 600c4446fd5cd4..1c6905bd1ee586 100644
--- a/Lib/test/test_msvcrt.py
+++ b/Lib/test/test_msvcrt.py
@@ -64,7 +64,7 @@ class TestConsoleIO(unittest.TestCase):
     # CREATE_NEW_CONSOLE creates a "popup" window.
     @requires_resource('gui')
     def run_in_separated_process(self, code):
-        # Run test in a seprated process to avoid stdin conflicts.
+        # Run test in a separated process to avoid stdin conflicts.
         # See: gh-110147
         cmd = [sys.executable, '-c', code]
         subprocess.run(cmd, check=True, capture_output=True,
diff --git a/Lib/test/test_multiprocessing_fork/__init__.py b/Lib/test/test_multiprocessing_fork/__init__.py
index aa1fff50b28f5f..b35e82879d7fe2 100644
--- a/Lib/test/test_multiprocessing_fork/__init__.py
+++ b/Lib/test/test_multiprocessing_fork/__init__.py
@@ -12,5 +12,8 @@
 if sys.platform == 'darwin':
     raise unittest.SkipTest("test may crash on macOS (bpo-33725)")
 
+if support.check_sanitizer(thread=True):
+    raise unittest.SkipTest("TSAN doesn't support threads after fork")
+
 def load_tests(*args):
     return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_ntpath.py b/Lib/test/test_ntpath.py
index 7f91bf1c2b837a..6715071af8c752 100644
--- a/Lib/test/test_ntpath.py
+++ b/Lib/test/test_ntpath.py
@@ -347,13 +347,18 @@ def test_normpath(self):
 
         tester("ntpath.normpath('..')", r'..')
         tester("ntpath.normpath('.')", r'.')
+        tester("ntpath.normpath('c:.')", 'c:')
         tester("ntpath.normpath('')", r'.')
         tester("ntpath.normpath('/')", '\\')
         tester("ntpath.normpath('c:/')", 'c:\\')
         tester("ntpath.normpath('/../.././..')", '\\')
         tester("ntpath.normpath('c:/../../..')", 'c:\\')
+        tester("ntpath.normpath('/./a/b')", r'\a\b')
+        tester("ntpath.normpath('c:/./a/b')", r'c:\a\b')
         tester("ntpath.normpath('../.././..')", r'..\..\..')
         tester("ntpath.normpath('K:../.././..')", r'K:..\..\..')
+        tester("ntpath.normpath('./a/b')", r'a\b')
+        tester("ntpath.normpath('c:./a/b')", r'c:a\b')
         tester("ntpath.normpath('C:////a/b')", r'C:\a\b')
         tester("ntpath.normpath('//machine/share//a/b')", r'\\machine\share\a\b')
 
@@ -806,6 +811,9 @@ def test_abspath(self):
         tester('ntpath.abspath("C:\\spam. . .")', "C:\\spam")
         tester('ntpath.abspath("C:/nul")',  "\\\\.\\nul")
         tester('ntpath.abspath("C:\\nul")', "\\\\.\\nul")
+        self.assertTrue(ntpath.isabs(ntpath.abspath("C:spam")))
+        self.assertEqual(ntpath.abspath("C:\x00"), ntpath.join(ntpath.abspath("C:"), "\x00"))
+        self.assertEqual(ntpath.abspath("\x00:spam"), "\x00:\\spam")
         tester('ntpath.abspath("//..")',           "\\\\")
         tester('ntpath.abspath("//../")',          "\\\\..\\")
         tester('ntpath.abspath("//../..")',        "\\\\..\\")
@@ -1095,6 +1103,27 @@ def test_isfile_driveletter(self):
             raise unittest.SkipTest('SystemDrive is not defined or malformed')
         self.assertFalse(os.path.isfile('\\\\.\\' + drive))
 
+    @unittest.skipUnless(hasattr(os, 'pipe'), "need os.pipe()")
+    def test_isfile_anonymous_pipe(self):
+        pr, pw = os.pipe()
+        try:
+            self.assertFalse(ntpath.isfile(pr))
+        finally:
+            os.close(pr)
+            os.close(pw)
+
+    @unittest.skipIf(sys.platform != 'win32', "windows only")
+    def test_isfile_named_pipe(self):
+        import _winapi
+        named_pipe = f'//./PIPE/python_isfile_test_{os.getpid()}'
+        h = _winapi.CreateNamedPipe(named_pipe,
+                                    _winapi.PIPE_ACCESS_INBOUND,
+                                    0, 1, 0, 0, 0, 0)
+        try:
+            self.assertFalse(ntpath.isfile(named_pipe))
+        finally:
+            _winapi.CloseHandle(h)
+
     @unittest.skipIf(sys.platform != 'win32', "windows only")
     def test_con_device(self):
         self.assertFalse(os.path.isfile(r"\\.\CON"))
@@ -1108,14 +1137,22 @@ def test_fast_paths_in_use(self):
         # There are fast paths of these functions implemented in posixmodule.c.
         # Confirm that they are being used, and not the Python fallbacks in
         # genericpath.py.
+        self.assertTrue(os.path.splitroot is nt._path_splitroot_ex)
+        self.assertFalse(inspect.isfunction(os.path.splitroot))
+        self.assertTrue(os.path.normpath is nt._path_normpath)
+        self.assertFalse(inspect.isfunction(os.path.normpath))
         self.assertTrue(os.path.isdir is nt._path_isdir)
         self.assertFalse(inspect.isfunction(os.path.isdir))
         self.assertTrue(os.path.isfile is nt._path_isfile)
         self.assertFalse(inspect.isfunction(os.path.isfile))
         self.assertTrue(os.path.islink is nt._path_islink)
         self.assertFalse(inspect.isfunction(os.path.islink))
+        self.assertTrue(os.path.isjunction is nt._path_isjunction)
+        self.assertFalse(inspect.isfunction(os.path.isjunction))
         self.assertTrue(os.path.exists is nt._path_exists)
         self.assertFalse(inspect.isfunction(os.path.exists))
+        self.assertTrue(os.path.lexists is nt._path_lexists)
+        self.assertFalse(inspect.isfunction(os.path.lexists))
 
     @unittest.skipIf(os.name != 'nt', "Dev Drives only exist on Win32")
     def test_isdevdrive(self):
diff --git a/Lib/test/test_opcache.py b/Lib/test/test_opcache.py
index 92a34113bc0383..c4fcc1993ca627 100644
--- a/Lib/test/test_opcache.py
+++ b/Lib/test/test_opcache.py
@@ -28,6 +28,13 @@ def wrapper(*args, **kwargs):
     return wrapper
 
 
+class TestBase(unittest.TestCase):
+    def assert_specialized(self, f, opname):
+        instructions = dis.get_instructions(f, adaptive=True)
+        opnames = {instruction.opname for instruction in instructions}
+        self.assertIn(opname, opnames)
+
+
 class TestLoadSuperAttrCache(unittest.TestCase):
     def test_descriptor_not_double_executed_on_spec_fail(self):
         calls = []
@@ -479,7 +486,7 @@ def f():
             self.assertFalse(f())
 
 
-class TestCallCache(unittest.TestCase):
+class TestCallCache(TestBase):
     def test_too_many_defaults_0(self):
         def f():
             pass
@@ -507,10 +514,33 @@ def f(x, y):
             f(None)
             f()
 
+    @disabling_optimizer
+    @requires_specialization
+    def test_assign_init_code(self):
+        class MyClass:
+            def __init__(self):
+                pass
+
+        def instantiate():
+            return MyClass()
+
+        # Trigger specialization
+        for _ in range(1025):
+            instantiate()
+        self.assert_specialized(instantiate, "CALL_ALLOC_AND_ENTER_INIT")
+
+        def count_args(self, *args):
+            self.num_args = len(args)
+
+        # Set MyClass.__init__.__code__ to a code object that is incompatible
+        # (uses varargs) with the current specialization
+        MyClass.__init__.__code__ = count_args.__code__
+        instantiate()
+
 
 @threading_helper.requires_working_threading()
 @requires_specialization
-class TestRacesDoNotCrash(unittest.TestCase):
+class TestRacesDoNotCrash(TestBase):
     # Careful with these. Bigger numbers have a higher chance of catching bugs,
     # but you can also burn through a *ton* of type/dict/function versions:
     ITEMS = 1000
@@ -518,11 +548,6 @@ class TestRacesDoNotCrash(unittest.TestCase):
     WARMUPS = 2
     WRITERS = 2
 
-    def assert_specialized(self, f, opname):
-        instructions = dis.get_instructions(f, adaptive=True)
-        opnames = {instruction.opname for instruction in instructions}
-        self.assertIn(opname, opnames)
-
     @disabling_optimizer
     def assert_races_do_not_crash(
         self, opname, get_items, read, write, *, check_items=False
diff --git a/Lib/test/test_optparse.py b/Lib/test/test_optparse.py
index 28b274462388ed..8655a0537a5e56 100644
--- a/Lib/test/test_optparse.py
+++ b/Lib/test/test_optparse.py
@@ -15,7 +15,7 @@
 from io import StringIO
 from test import support
 from test.support import os_helper
-
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
 
 import optparse
 from optparse import make_option, Option, \
@@ -1656,5 +1656,14 @@ def test__all__(self):
         support.check__all__(self, optparse, not_exported=not_exported)
 
 
+class TestTranslations(TestTranslationsBase):
+    def test_translations(self):
+        self.assertMsgidsEqual(optparse)
+
+
 if __name__ == '__main__':
+    # To regenerate translation snapshots
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_translation_snapshots(optparse)
+        sys.exit(0)
     unittest.main()
diff --git a/Lib/test/test_ordered_dict.py b/Lib/test/test_ordered_dict.py
index 4571b23dfe7c1a..a9b6a84996e659 100644
--- a/Lib/test/test_ordered_dict.py
+++ b/Lib/test/test_ordered_dict.py
@@ -2,7 +2,9 @@
 import contextlib
 import copy
 import gc
+import operator
 import pickle
+import re
 from random import randrange, shuffle
 import struct
 import sys
@@ -10,7 +12,7 @@
 import weakref
 from collections.abc import MutableMapping
 from test import mapping_tests, support
-from test.support import import_helper
+from test.support import import_helper, suppress_immortalization
 
 
 py_coll = import_helper.import_fresh_module('collections',
@@ -667,6 +669,7 @@ def test_dict_update(self):
         dict.update(od, [('spam', 1)])
         self.assertNotIn('NULL', repr(od))
 
+    @suppress_immortalization()
     def test_reference_loop(self):
         # Issue 25935
         OrderedDict = self.OrderedDict
@@ -739,11 +742,44 @@ def test_ordered_dict_items_result_gc(self):
         # when it's mutated and returned from __next__:
         self.assertTrue(gc.is_tracked(next(it)))
 
+
+class _TriggerSideEffectOnEqual:
+    count = 0   # number of calls to __eq__
+    trigger = 1 # count value when to trigger side effect
+
+    def __eq__(self, other):
+        if self.__class__.count == self.__class__.trigger:
+            self.side_effect()
+        self.__class__.count += 1
+        return True
+
+    def __hash__(self):
+        # all instances represent the same key
+        return -1
+
+    def side_effect(self):
+        raise NotImplementedError
+
 class PurePythonOrderedDictTests(OrderedDictTests, unittest.TestCase):
 
     module = py_coll
     OrderedDict = py_coll.OrderedDict
 
+    def test_issue119004_attribute_error(self):
+        class Key(_TriggerSideEffectOnEqual):
+            def side_effect(self):
+                del dict1[TODEL]
+
+        TODEL = Key()
+        dict1 = self.OrderedDict(dict.fromkeys((0, TODEL, 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        # This causes an AttributeError due to the linked list being changed
+        msg = re.escape("'NoneType' object has no attribute 'key'")
+        self.assertRaisesRegex(AttributeError, msg, operator.eq, dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, dict.fromkeys((0, 4.2)))
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
 
 class CPythonBuiltinDictTests(unittest.TestCase):
     """Builtin dict preserves insertion order.
@@ -764,8 +800,85 @@ class CPythonBuiltinDictTests(unittest.TestCase):
 del method
 
 
+class CPythonOrderedDictSideEffects:
+
+    def check_runtime_error_issue119004(self, dict1, dict2):
+        msg = re.escape("OrderedDict mutated during iteration")
+        self.assertRaisesRegex(RuntimeError, msg, operator.eq, dict1, dict2)
+
+    def test_issue119004_change_size_by_clear(self):
+        class Key(_TriggerSideEffectOnEqual):
+            def side_effect(self):
+                dict1.clear()
+
+        dict1 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        self.check_runtime_error_issue119004(dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, {})
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
+    def test_issue119004_change_size_by_delete_key(self):
+        class Key(_TriggerSideEffectOnEqual):
+            def side_effect(self):
+                del dict1[TODEL]
+
+        TODEL = Key()
+        dict1 = self.OrderedDict(dict.fromkeys((0, TODEL, 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        self.check_runtime_error_issue119004(dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, dict.fromkeys((0, 4.2)))
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
+    def test_issue119004_change_linked_list_by_clear(self):
+        class Key(_TriggerSideEffectOnEqual):
+            def side_effect(self):
+                dict1.clear()
+                dict1['a'] = dict1['b'] = 'c'
+
+        dict1 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        self.check_runtime_error_issue119004(dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, dict.fromkeys(('a', 'b'), 'c'))
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
+    def test_issue119004_change_linked_list_by_delete_key(self):
+        class Key(_TriggerSideEffectOnEqual):
+            def side_effect(self):
+                del dict1[TODEL]
+                dict1['a'] = 'c'
+
+        TODEL = Key()
+        dict1 = self.OrderedDict(dict.fromkeys((0, TODEL, 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        self.check_runtime_error_issue119004(dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, {0: None, 'a': 'c', 4.2: None})
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
+    def test_issue119004_change_size_by_delete_key_in_dict_eq(self):
+        class Key(_TriggerSideEffectOnEqual):
+            trigger = 0
+            def side_effect(self):
+                del dict1[TODEL]
+
+        TODEL = Key()
+        dict1 = self.OrderedDict(dict.fromkeys((0, TODEL, 4.2)))
+        dict2 = self.OrderedDict(dict.fromkeys((0, Key(), 4.2)))
+        self.assertEqual(Key.count, 0)
+        # the side effect is in dict.__eq__ and modifies the length
+        self.assertNotEqual(dict1, dict2)
+        self.assertEqual(Key.count, 2)
+        self.assertDictEqual(dict1, dict.fromkeys((0, 4.2)))
+        self.assertDictEqual(dict2, dict.fromkeys((0, Key(), 4.2)))
+
+
 @unittest.skipUnless(c_coll, 'requires the C version of the collections module')
-class CPythonOrderedDictTests(OrderedDictTests, unittest.TestCase):
+class CPythonOrderedDictTests(OrderedDictTests,
+                              CPythonOrderedDictSideEffects,
+                              unittest.TestCase):
 
     module = c_coll
     OrderedDict = c_coll.OrderedDict
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 9c9c8536dc7542..87e7328acab8f8 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -828,7 +828,7 @@ def ns_to_sec(ns):
         return (ns * 1e-9) + 0.5e-9
 
     def test_utime_by_indexed(self):
-        # pass times as floating point seconds as the second indexed parameter
+        # pass times as floating-point seconds as the second indexed parameter
         def set_time(filename, ns):
             atime_ns, mtime_ns = ns
             atime = self.ns_to_sec(atime_ns)
@@ -1685,10 +1685,29 @@ def test_fd_leak(self):
         self.addCleanup(os.close, newfd)
         self.assertEqual(newfd, minfd)
 
+    @unittest.skipIf(
+        support.is_emscripten, "Cannot dup stdout on Emscripten"
+    )
+    @unittest.skipIf(
+        support.is_android, "dup return value is unpredictable on Android"
+    )
+    def test_fd_finalization(self):
+        # Check that close()ing the fwalk() generator closes FDs
+        def getfd():
+            fd = os.dup(1)
+            os.close(fd)
+            return fd
+        for topdown in (False, True):
+            old_fd = getfd()
+            it = self.fwalk(os_helper.TESTFN, topdown=topdown)
+            self.assertEqual(getfd(), old_fd)
+            next(it)
+            self.assertGreater(getfd(), old_fd)
+            it.close()
+            self.assertEqual(getfd(), old_fd)
+
     # fwalk() keeps file descriptors open
     test_walk_many_open_files = None
-    # fwalk() still uses recursion
-    test_walk_above_recursion_limit = None
 
 
 class BytesWalkTests(WalkTests):
@@ -1814,21 +1833,15 @@ def test_exist_ok_existing_regular_file(self):
     @unittest.skipUnless(os.name == 'nt', "requires Windows")
     def test_win32_mkdir_700(self):
         base = os_helper.TESTFN
-        path1 = os.path.join(os_helper.TESTFN, 'dir1')
-        path2 = os.path.join(os_helper.TESTFN, 'dir2')
-        # mode=0o700 is special-cased to override ACLs on Windows
-        # There's no way to know exactly how the ACLs will look, so we'll
-        # check that they are different from a regularly created directory.
-        os.mkdir(path1, mode=0o700)
-        os.mkdir(path2, mode=0o777)
-
-        out1 = subprocess.check_output(["icacls.exe", path1], encoding="oem")
-        out2 = subprocess.check_output(["icacls.exe", path2], encoding="oem")
-        os.rmdir(path1)
-        os.rmdir(path2)
-        out1 = out1.replace(path1, "<PATH>")
-        out2 = out2.replace(path2, "<PATH>")
-        self.assertNotEqual(out1, out2)
+        path = os.path.abspath(os.path.join(os_helper.TESTFN, 'dir'))
+        os.mkdir(path, mode=0o700)
+        out = subprocess.check_output(["cacls.exe", path, "/s"], encoding="oem")
+        os.rmdir(path)
+        out = out.strip().rsplit(" ", 1)[1]
+        self.assertEqual(
+            out,
+            '"D:P(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;FA;;;OW)"',
+        )
 
     def tearDown(self):
         path = os.path.join(os_helper.TESTFN, 'dir1', 'dir2', 'dir3',
@@ -3114,7 +3127,8 @@ class Win32NtTests(unittest.TestCase):
     def test_getfinalpathname_handles(self):
         nt = import_helper.import_module('nt')
         ctypes = import_helper.import_module('ctypes')
-        import ctypes.wintypes
+        # Ruff false positive -- it thinks we're redefining `ctypes` here
+        import ctypes.wintypes  # noqa: F811
 
         kernel = ctypes.WinDLL('Kernel32.dll', use_last_error=True)
         kernel.GetCurrentProcess.restype = ctypes.wintypes.HANDLE
@@ -3226,9 +3240,8 @@ def test_stat_inaccessible_file(self):
             self.skipTest("Unable to create inaccessible file")
 
         def cleanup():
-            # Give delete permission. We are the file owner, so we can do this
-            # even though we removed all permissions earlier.
-            subprocess.check_output([ICACLS, filename, "/grant", "Everyone:(D)"],
+            # Give delete permission to the owner (us)
+            subprocess.check_output([ICACLS, filename, "/grant", "*WD:(D)"],
                                     stderr=subprocess.STDOUT)
             os.unlink(filename)
 
@@ -3904,10 +3917,10 @@ def _check_xattrs_str(self, s, getxattr, setxattr, removexattr, listxattr, **kwa
         xattr.remove("user.test")
         self.assertEqual(set(listxattr(fn)), xattr)
         self.assertEqual(getxattr(fn, s("user.test2"), **kwargs), b"foo")
-        setxattr(fn, s("user.test"), b"a"*1024, **kwargs)
-        self.assertEqual(getxattr(fn, s("user.test"), **kwargs), b"a"*1024)
+        setxattr(fn, s("user.test"), b"a"*256, **kwargs)
+        self.assertEqual(getxattr(fn, s("user.test"), **kwargs), b"a"*256)
         removexattr(fn, s("user.test"), **kwargs)
-        many = sorted("user.test{}".format(i) for i in range(100))
+        many = sorted("user.test{}".format(i) for i in range(32))
         for thing in many:
             setxattr(fn, thing, b"x", **kwargs)
         self.assertEqual(set(listxattr(fn)), set(init_xattr) | set(many))
@@ -4111,6 +4124,7 @@ def test_eventfd_select(self):
         os.eventfd_read(fd)
 
 @unittest.skipUnless(hasattr(os, 'timerfd_create'), 'requires os.timerfd_create')
+@unittest.skipIf(sys.platform == "android", "gh-124873: Test is flaky on Android")
 @support.requires_linux_version(2, 6, 30)
 class TimerfdTests(unittest.TestCase):
     # 1 ms accuracy is reliably achievable on every platform except Android
diff --git a/Lib/test/test_pathlib/test_pathlib.py b/Lib/test/test_pathlib/test_pathlib.py
index 5fd1a41cbee17b..093746c0c150d6 100644
--- a/Lib/test/test_pathlib/test_pathlib.py
+++ b/Lib/test/test_pathlib/test_pathlib.py
@@ -107,6 +107,15 @@ def test_constructor_nested(self):
         self.assertEqual(P(P('a'), P('b'), P('c')), P(FakePath("a/b/c")))
         self.assertEqual(P(P('./a:b')), P('./a:b'))
 
+    @needs_windows
+    def test_constructor_nested_foreign_flavour(self):
+        # See GH-125069.
+        p1 = pathlib.PurePosixPath('b/c:\\d')
+        p2 = pathlib.PurePosixPath('b/', 'c:\\d')
+        self.assertEqual(p1, p2)
+        self.assertEqual(self.cls(p1), self.cls('b/c:/d'))
+        self.assertEqual(self.cls(p2), self.cls('b/c:/d'))
+
     def _check_parse_path(self, raw_path, *expected):
         sep = self.parser.sep
         actual = self.cls._parse_path(raw_path.replace('/', sep))
@@ -1296,18 +1305,20 @@ def test_absolute_posix(self):
     )
     @needs_posix
     def test_open_mode(self):
-        old_mask = os.umask(0)
+        # Unmask all permissions except world-write, which may
+        # not be supported on some filesystems (see GH-85633.)
+        old_mask = os.umask(0o002)
         self.addCleanup(os.umask, old_mask)
         p = self.cls(self.base)
         with (p / 'new_file').open('wb'):
             pass
         st = os.stat(self.parser.join(self.base, 'new_file'))
-        self.assertEqual(stat.S_IMODE(st.st_mode), 0o666)
-        os.umask(0o022)
+        self.assertEqual(stat.S_IMODE(st.st_mode), 0o664)
+        os.umask(0o026)
         with (p / 'other_new_file').open('wb'):
             pass
         st = os.stat(self.parser.join(self.base, 'other_new_file'))
-        self.assertEqual(stat.S_IMODE(st.st_mode), 0o644)
+        self.assertEqual(stat.S_IMODE(st.st_mode), 0o640)
 
     @needs_posix
     def test_resolve_root(self):
@@ -1325,16 +1336,18 @@ def test_resolve_root(self):
     )
     @needs_posix
     def test_touch_mode(self):
-        old_mask = os.umask(0)
+        # Unmask all permissions except world-write, which may
+        # not be supported on some filesystems (see GH-85633.)
+        old_mask = os.umask(0o002)
         self.addCleanup(os.umask, old_mask)
         p = self.cls(self.base)
         (p / 'new_file').touch()
         st = os.stat(self.parser.join(self.base, 'new_file'))
-        self.assertEqual(stat.S_IMODE(st.st_mode), 0o666)
-        os.umask(0o022)
+        self.assertEqual(stat.S_IMODE(st.st_mode), 0o664)
+        os.umask(0o026)
         (p / 'other_new_file').touch()
         st = os.stat(self.parser.join(self.base, 'other_new_file'))
-        self.assertEqual(stat.S_IMODE(st.st_mode), 0o644)
+        self.assertEqual(stat.S_IMODE(st.st_mode), 0o640)
         (p / 'masked_new_file').touch(mode=0o750)
         st = os.stat(self.parser.join(self.base, 'masked_new_file'))
         self.assertEqual(stat.S_IMODE(st.st_mode), 0o750)
diff --git a/Lib/test/test_pathlib/test_pathlib_abc.py b/Lib/test/test_pathlib/test_pathlib_abc.py
index aadecbc142cca6..d9e51c0e3d6411 100644
--- a/Lib/test/test_pathlib/test_pathlib_abc.py
+++ b/Lib/test/test_pathlib/test_pathlib_abc.py
@@ -999,6 +999,7 @@ def test_with_suffix_windows(self):
         self.assertRaises(ValueError, P('c:a/b').with_suffix, 'c\\d')
         self.assertRaises(ValueError, P('c:a/b').with_suffix, '.c/d')
         self.assertRaises(ValueError, P('c:a/b').with_suffix, '.c\\d')
+        self.assertRaises(TypeError, P('c:a/b').with_suffix, None)
 
     def test_with_suffix_empty(self):
         P = self.cls
@@ -1006,7 +1007,7 @@ def test_with_suffix_empty(self):
         self.assertRaises(ValueError, P('').with_suffix, '.gz')
         self.assertRaises(ValueError, P('/').with_suffix, '.gz')
 
-    def test_with_suffix_seps(self):
+    def test_with_suffix_invalid(self):
         P = self.cls
         # Invalid suffix.
         self.assertRaises(ValueError, P('a/b').with_suffix, 'gz')
@@ -1017,6 +1018,7 @@ def test_with_suffix_seps(self):
         self.assertRaises(ValueError, P('a/b').with_suffix, '.c/.d')
         self.assertRaises(ValueError, P('a/b').with_suffix, './.d')
         self.assertRaises(ValueError, P('a/b').with_suffix, '.d/.')
+        self.assertRaises(TypeError, P('a/b').with_suffix, None)
 
     def test_relative_to_common(self):
         P = self.cls
diff --git a/Lib/test/test_patma.py b/Lib/test/test_patma.py
index 1bdab125dc6ef0..8325b83a5932b9 100644
--- a/Lib/test/test_patma.py
+++ b/Lib/test/test_patma.py
@@ -1,6 +1,7 @@
 import array
 import collections
 import dataclasses
+import dis
 import enum
 import inspect
 import sys
@@ -3377,6 +3378,24 @@ class Keys:
         self.assertIs(y, None)
         self.assertIs(z, None)
 
+class TestSourceLocations(unittest.TestCase):
+    def test_jump_threading(self):
+        # See gh-123048
+        def f():
+            x = 0
+            v = 1
+            match v:
+                case 1:
+                    if x < 0:
+                        x = 1
+                case 2:
+                    if x < 0:
+                        x = 1
+            x += 1
+
+        for inst in dis.get_instructions(f):
+            if inst.opcode in dis.hasjump:
+                self.assertIsNotNone(inst.positions.lineno, "jump without location")
 
 class TestTracing(unittest.TestCase):
 
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index f47466410082ef..c34046f0e5bb6f 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -358,6 +358,42 @@ def test_pdb_breakpoint_commands():
     4
     """
 
+def test_pdb_breakpoint_on_annotated_function_def():
+    """Test breakpoints on function definitions with annotation.
+
+    >>> def foo[T]():
+    ...     return 0
+
+    >>> def bar() -> int:
+    ...     return 0
+
+    >>> def foobar[T]() -> int:
+    ...     return 0
+
+    >>> reset_Breakpoint()
+
+    >>> def test_function():
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'break foo',
+    ...     'break bar',
+    ...     'break foobar',
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_breakpoint_on_annotated_function_def[4]>(2)test_function()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) break foo
+    Breakpoint 1 at <doctest test.test_pdb.test_pdb_breakpoint_on_annotated_function_def[0]>:2
+    (Pdb) break bar
+    Breakpoint 2 at <doctest test.test_pdb.test_pdb_breakpoint_on_annotated_function_def[1]>:2
+    (Pdb) break foobar
+    Breakpoint 3 at <doctest test.test_pdb.test_pdb_breakpoint_on_annotated_function_def[2]>:2
+    (Pdb) continue
+    """
+
 def test_pdb_breakpoint_with_filename():
     """Breakpoints with filename:lineno
 
@@ -491,6 +527,37 @@ def test_pdb_pp_repr_exc():
     (Pdb) continue
     """
 
+def test_pdb_empty_line():
+    """Test that empty line repeats the last command.
+
+    >>> def test_function():
+    ...     x = 1
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     y = 2
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'p x',
+    ...     '',  # Should repeat p x
+    ...     'n ;; p 0 ;; p x',  # Fill cmdqueue with multiple commands
+    ...     '',  # Should still repeat p x
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_empty_line[0]>(3)test_function()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) p x
+    1
+    (Pdb)
+    1
+    (Pdb) n ;; p 0 ;; p x
+    0
+    1
+    > <doctest test.test_pdb.test_pdb_empty_line[0]>(4)test_function()
+    -> y = 2
+    (Pdb)
+    1
+    (Pdb) continue
+    """
 
 def do_nothing():
     pass
@@ -1453,6 +1520,58 @@ def test_post_mortem():
     """
 
 
+def test_pdb_return_to_different_file():
+    """When pdb returns to a different file, it should not skip if f_trace is
+       not already set
+
+    >>> import pprint
+
+    >>> class A:
+    ...    def __repr__(self):
+    ...        return 'A'
+
+    >>> def test_function():
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pprint.pprint(A())
+
+    >>> reset_Breakpoint()
+    >>> with PdbTestInput([  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
+    ...     'b A.__repr__',
+    ...     'continue',
+    ...     'return',
+    ...     'next',
+    ...     'return',
+    ...     'return',
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_return_to_different_file[2]>(2)test_function()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) b A.__repr__
+    Breakpoint 1 at <doctest test.test_pdb.test_pdb_return_to_different_file[1]>:3
+    (Pdb) continue
+    > <doctest test.test_pdb.test_pdb_return_to_different_file[1]>(3)__repr__()
+    -> return 'A'
+    (Pdb) return
+    --Return--
+    > <doctest test.test_pdb.test_pdb_return_to_different_file[1]>(3)__repr__()->'A'
+    -> return 'A'
+    (Pdb) next
+    > ...pprint.py..._safe_repr()
+    -> return rep,...
+    (Pdb) return
+    --Return--
+    > ...pprint.py..._safe_repr()->('A'...)
+    -> return rep,...
+    (Pdb) return
+    --Return--
+    > ...pprint.py...format()->('A'...)
+    -> return...
+    (Pdb) continue
+    A
+    """
+
+
 def test_pdb_skip_modules():
     """This illustrates the simple case of module skipping.
 
@@ -2210,7 +2329,12 @@ def test_pdb_multiline_statement():
     ...     'def f(x):',
     ...     '  return x * 2',
     ...     '',
-    ...     'f(2)',
+    ...     'val = 2',
+    ...     'if val > 0:',
+    ...     '  val = f(val)',
+    ...     '',
+    ...     '',  # empty line should repeat the multi-line statement
+    ...     'val',
     ...     'c'
     ... ]):
     ...     test_function()
@@ -2219,8 +2343,13 @@ def test_pdb_multiline_statement():
     (Pdb) def f(x):
     ...     return x * 2
     ...
-    (Pdb) f(2)
-    4
+    (Pdb) val = 2
+    (Pdb) if val > 0:
+    ...     val = f(val)
+    ...
+    (Pdb)
+    (Pdb) val
+    8
     (Pdb) c
     """
 
@@ -2590,6 +2719,22 @@ def test_pdb_issue_gh_108976():
     (Pdb) continue
     """
 
+def test_pdb_issue_gh_127321():
+    """See GH-127321
+    breakpoint() should stop at a opcode that has a line number
+    >>> def test_function():
+    ...     import pdb; pdb_instance = pdb.Pdb(nosigint=True, readrc=False)
+    ...     [1, 2] and pdb_instance.set_trace()
+    ...     a = 1
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'continue'
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_issue_gh_127321[0]>(4)test_function()
+    -> a = 1
+    (Pdb) continue
+    """
+
 
 def test_pdb_issue_gh_80731():
     """See GH-80731
@@ -2665,6 +2810,57 @@ def test_pdb_f_trace_lines():
     (Pdb) continue
     """
 
+def test_pdb_frame_refleak():
+    """
+    pdb should not leak reference to frames
+
+    >>> def frame_leaker(container):
+    ...     import sys
+    ...     container.append(sys._getframe())
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    ...     pass
+
+    >>> def test_function():
+    ...     import gc
+    ...     container = []
+    ...     frame_leaker(container)  # c
+    ...     print(len(gc.get_referrers(container[0])))
+    ...     container = []
+    ...     frame_leaker(container)  # n c
+    ...     print(len(gc.get_referrers(container[0])))
+    ...     container = []
+    ...     frame_leaker(container)  # r c
+    ...     print(len(gc.get_referrers(container[0])))
+
+    >>> with PdbTestInput([  # doctest: +NORMALIZE_WHITESPACE
+    ...     'continue',
+    ...     'next',
+    ...     'continue',
+    ...     'return',
+    ...     'continue',
+    ... ]):
+    ...    test_function()
+    > <doctest test.test_pdb.test_pdb_frame_refleak[0]>(4)frame_leaker()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) continue
+    1
+    > <doctest test.test_pdb.test_pdb_frame_refleak[0]>(4)frame_leaker()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) next
+    > <doctest test.test_pdb.test_pdb_frame_refleak[0]>(5)frame_leaker()
+    -> pass
+    (Pdb) continue
+    1
+    > <doctest test.test_pdb.test_pdb_frame_refleak[0]>(4)frame_leaker()
+    -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+    (Pdb) return
+    --Return--
+    > <doctest test.test_pdb.test_pdb_frame_refleak[0]>(5)frame_leaker()->None
+    -> pass
+    (Pdb) continue
+    1
+    """
+
 def test_pdb_function_break():
     """Testing the line number of break on function
 
@@ -2794,6 +2990,7 @@ def _run_pdb(self, pdb_args, commands,
     def run_pdb_script(self, script, commands,
                        expected_returncode=0,
                        extra_env=None,
+                       script_args=None,
                        pdbrc=None,
                        remove_home=False):
         """Run 'script' lines with pdb and the pdb 'commands'."""
@@ -2811,7 +3008,9 @@ def run_pdb_script(self, script, commands,
         if remove_home:
             homesave = os.environ.pop('HOME', None)
         try:
-            stdout, stderr = self._run_pdb([filename], commands, expected_returncode, extra_env)
+            if script_args is None:
+                script_args = []
+            stdout, stderr = self._run_pdb([filename] + script_args, commands, expected_returncode, extra_env)
         finally:
             if homesave is not None:
                 os.environ['HOME'] = homesave
@@ -3098,6 +3297,50 @@ def test_issue26053(self):
         self.assertRegex(res, "Restarting .* with arguments:\na b c")
         self.assertRegex(res, "Restarting .* with arguments:\nd e f")
 
+    def test_issue58956(self):
+        # Set a breakpoint in a function that already exists on the call stack
+        # should enable the trace function for the frame.
+        script = """
+            import bar
+            def foo():
+                ret = bar.bar()
+                pass
+            foo()
+        """
+        commands = """
+            b bar.bar
+            c
+            b main.py:5
+            c
+            p ret
+            quit
+        """
+        bar = """
+            def bar():
+                return 42
+        """
+        with open('bar.py', 'w') as f:
+            f.write(textwrap.dedent(bar))
+        self.addCleanup(os_helper.unlink, 'bar.py')
+        stdout, stderr = self.run_pdb_script(script, commands)
+        lines = stdout.splitlines()
+        self.assertIn('-> pass', lines)
+        self.assertIn('(Pdb) 42', lines)
+
+    def test_step_into_botframe(self):
+        # gh-125422
+        # pdb should not be able to step into the botframe (bdb.py)
+        script = "x = 1"
+        commands = """
+            step
+            step
+            step
+            quit
+        """
+        stdout, _ = self.run_pdb_script(script, commands)
+        self.assertIn("The program finished", stdout)
+        self.assertNotIn("bdb.py", stdout)
+
     def test_pdbrc_basic(self):
         script = textwrap.dedent("""
             a = 1
@@ -3244,6 +3487,22 @@ def test_run_module_with_args(self):
         stdout, _ = self._run_pdb(["-m", "calendar", "1"], commands)
         self.assertIn("December", stdout)
 
+        stdout, _ = self._run_pdb(["-m", "calendar", "--type", "text"], commands)
+        self.assertIn("December", stdout)
+
+    def test_run_script_with_args(self):
+        script = """
+            import sys
+            print(sys.argv[1:])
+        """
+        commands = """
+            continue
+            quit
+        """
+
+        stdout, stderr = self.run_pdb_script(script, commands, script_args=["--bar", "foo"])
+        self.assertIn("['--bar', 'foo']", stdout)
+
     def test_breakpoint(self):
         script = """
             if __name__ == '__main__':
@@ -3333,10 +3592,12 @@ def test_file_modified_after_execution(self):
             print("hello")
         """
 
+        # the time.sleep is needed for low-resolution filesystems like HFS+
         commands = """
             filename = $_frame.f_code.co_filename
             f = open(filename, "w")
             f.write("print('goodbye')")
+            import time; time.sleep(1)
             f.close()
             ll
         """
@@ -3346,10 +3607,12 @@ def test_file_modified_after_execution(self):
         self.assertIn("was edited", stdout)
 
     def test_file_modified_after_execution_with_multiple_instances(self):
+        # the time.sleep is needed for low-resolution filesystems like HFS+
         script = """
             import pdb; pdb.Pdb().set_trace()
             with open(__file__, "w") as f:
                 f.write("print('goodbye')\\n" * 5)
+                import time; time.sleep(1)
             import pdb; pdb.Pdb().set_trace()
         """
 
@@ -3409,6 +3672,23 @@ def change_file(content, filename):
         # the file as up to date
         self.assertNotIn("WARNING:", stdout)
 
+    def test_post_mortem_restart(self):
+        script = """
+            def foo():
+                raise ValueError("foo")
+            foo()
+        """
+
+        commands = """
+            continue
+            restart
+            continue
+            quit
+        """
+
+        stdout, stderr = self.run_pdb_script(script, commands)
+        self.assertIn("Restarting", stdout)
+
     def test_relative_imports(self):
         self.module_name = 't_main'
         os_helper.rmtree(self.module_name)
@@ -3663,6 +3943,16 @@ def _create_fake_frozen_module():
         # verify that pdb found the source of the "frozen" function
         self.assertIn('x = "Sentinel string for gh-93696"', stdout, "Sentinel statement not found")
 
+    def test_empty_file(self):
+        script = ''
+        commands = 'q\n'
+        # We check that pdb stopped at line 0, but anything reasonable
+        # is acceptable here, as long as it does not halt
+        stdout, _ = self.run_pdb_script(script, commands)
+        self.assertIn('main.py(0)', stdout)
+        stdout, _ = self.run_pdb_module(script, commands)
+        self.assertIn('__main__.py(0)', stdout)
+
     def test_non_utf8_encoding(self):
         script_dir = os.path.join(os.path.dirname(__file__), 'encoded_modules')
         for filename in os.listdir(script_dir):
diff --git a/Lib/test/test_peg_generator/test_pegen.py b/Lib/test/test_peg_generator/test_pegen.py
index 86db767b99a228..54c9dce2d0c90d 100644
--- a/Lib/test/test_peg_generator/test_pegen.py
+++ b/Lib/test/test_peg_generator/test_pegen.py
@@ -484,7 +484,7 @@ def test_left_recursive(self) -> None:
 
     def test_python_expr(self) -> None:
         grammar = """
-        start: expr NEWLINE? $ { ast.Expression(expr, lineno=1, col_offset=0) }
+        start: expr NEWLINE? $ { ast.Expression(expr) }
         expr: ( expr '+' term { ast.BinOp(expr, ast.Add(), term, lineno=expr.lineno, col_offset=expr.col_offset, end_lineno=term.end_lineno, end_col_offset=term.end_col_offset) }
             | expr '-' term { ast.BinOp(expr, ast.Sub(), term, lineno=expr.lineno, col_offset=expr.col_offset, end_lineno=term.end_lineno, end_col_offset=term.end_col_offset) }
             | term { term }
@@ -893,7 +893,7 @@ def test_unreachable_implicit3(self) -> None:
 
     def test_locations_in_alt_action_and_group(self) -> None:
         grammar = """
-        start: t=term NEWLINE? $ { ast.Expression(t, LOCATIONS) }
+        start: t=term NEWLINE? $ { ast.Expression(t) }
         term:
             | l=term '*' r=factor { ast.BinOp(l, ast.Mult(), r, LOCATIONS) }
             | l=term '/' r=factor { ast.BinOp(l, ast.Div(), r, LOCATIONS) }
diff --git a/Lib/test/test_pickle.py b/Lib/test/test_pickle.py
index 19f977971570b7..4ec966d8351490 100644
--- a/Lib/test/test_pickle.py
+++ b/Lib/test/test_pickle.py
@@ -16,6 +16,7 @@
 
 from test.pickletester import AbstractHookTests
 from test.pickletester import AbstractUnpickleTests
+from test.pickletester import AbstractPicklingErrorTests
 from test.pickletester import AbstractPickleTests
 from test.pickletester import AbstractPickleModuleTests
 from test.pickletester import AbstractPersistentPicklerTests
@@ -55,6 +56,18 @@ def loads(self, buf, **kwds):
         return u.load()
 
 
+class PyPicklingErrorTests(AbstractPicklingErrorTests, unittest.TestCase):
+
+    pickler = pickle._Pickler
+
+    def dumps(self, arg, proto=None, **kwargs):
+        f = io.BytesIO()
+        p = self.pickler(f, proto, **kwargs)
+        p.dump(arg)
+        f.seek(0)
+        return bytes(f.read())
+
+
 class PyPicklerTests(AbstractPickleTests, unittest.TestCase):
 
     pickler = pickle._Pickler
@@ -88,6 +101,8 @@ def loads(self, buf, **kwds):
         return pickle.loads(buf, **kwds)
 
     test_framed_write_sizes_with_delayed_writer = None
+    test_find_class = None
+    test_custom_find_class = None
 
 
 class PersistentPicklerUnpicklerMixin(object):
@@ -209,25 +224,109 @@ def persistent_load(pid):
     def test_pickler_super(self):
         class PersPickler(self.pickler):
             def persistent_id(subself, obj):
+                called.append(obj)
                 self.assertIsNone(super().persistent_id(obj))
                 return obj
 
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             f = io.BytesIO()
             pickler = PersPickler(f, proto)
+            called = []
             pickler.dump('abc')
+            self.assertEqual(called, ['abc'])
             self.assertEqual(self.loads(f.getvalue()), 'abc')
 
     def test_unpickler_super(self):
         class PersUnpickler(self.unpickler):
             def persistent_load(subself, pid):
+                called.append(pid)
                 with self.assertRaises(self.persistent_load_error):
                     super().persistent_load(pid)
                 return pid
 
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
             unpickler = PersUnpickler(io.BytesIO(self.dumps('abc', proto)))
+            called = []
             self.assertEqual(unpickler.load(), 'abc')
+            self.assertEqual(called, ['abc'])
+
+    def test_pickler_instance_attribute(self):
+        def persistent_id(obj):
+            called.append(obj)
+            return obj
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            f = io.BytesIO()
+            pickler = self.pickler(f, proto)
+            called = []
+            old_persistent_id = pickler.persistent_id
+            pickler.persistent_id = persistent_id
+            self.assertEqual(pickler.persistent_id, persistent_id)
+            pickler.dump('abc')
+            self.assertEqual(called, ['abc'])
+            self.assertEqual(self.loads(f.getvalue()), 'abc')
+            del pickler.persistent_id
+            self.assertEqual(pickler.persistent_id, old_persistent_id)
+
+    def test_unpickler_instance_attribute(self):
+        def persistent_load(pid):
+            called.append(pid)
+            return pid
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            unpickler = self.unpickler(io.BytesIO(self.dumps('abc', proto)))
+            called = []
+            old_persistent_load = unpickler.persistent_load
+            unpickler.persistent_load = persistent_load
+            self.assertEqual(unpickler.persistent_load, persistent_load)
+            self.assertEqual(unpickler.load(), 'abc')
+            self.assertEqual(called, ['abc'])
+            del unpickler.persistent_load
+            self.assertEqual(unpickler.persistent_load, old_persistent_load)
+
+    def test_pickler_super_instance_attribute(self):
+        class PersPickler(self.pickler):
+            def persistent_id(subself, obj):
+                raise AssertionError('should never be called')
+            def _persistent_id(subself, obj):
+                called.append(obj)
+                self.assertIsNone(super().persistent_id(obj))
+                return obj
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            f = io.BytesIO()
+            pickler = PersPickler(f, proto)
+            called = []
+            old_persistent_id = pickler.persistent_id
+            pickler.persistent_id = pickler._persistent_id
+            self.assertEqual(pickler.persistent_id, pickler._persistent_id)
+            pickler.dump('abc')
+            self.assertEqual(called, ['abc'])
+            self.assertEqual(self.loads(f.getvalue()), 'abc')
+            del pickler.persistent_id
+            self.assertEqual(pickler.persistent_id, old_persistent_id)
+
+    def test_unpickler_super_instance_attribute(self):
+        class PersUnpickler(self.unpickler):
+            def persistent_load(subself, pid):
+                raise AssertionError('should never be called')
+            def _persistent_load(subself, pid):
+                called.append(pid)
+                with self.assertRaises(self.persistent_load_error):
+                    super().persistent_load(pid)
+                return pid
+
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            unpickler = PersUnpickler(io.BytesIO(self.dumps('abc', proto)))
+            called = []
+            old_persistent_load = unpickler.persistent_load
+            unpickler.persistent_load = unpickler._persistent_load
+            self.assertEqual(unpickler.persistent_load, unpickler._persistent_load)
+            self.assertEqual(unpickler.load(), 'abc')
+            self.assertEqual(called, ['abc'])
+            del unpickler.persistent_load
+            self.assertEqual(unpickler.persistent_load, old_persistent_load)
+
 
 class PyPicklerUnpicklerObjectTests(AbstractPicklerUnpicklerObjectTests, unittest.TestCase):
 
@@ -267,6 +366,9 @@ class CUnpicklerTests(PyUnpicklerTests):
         bad_stack_errors = (pickle.UnpicklingError,)
         truncated_errors = (pickle.UnpicklingError,)
 
+    class CPicklingErrorTests(PyPicklingErrorTests):
+        pickler = _pickle.Pickler
+
     class CPicklerTests(PyPicklerTests):
         pickler = _pickle.Pickler
         unpickler = _pickle.Unpickler
@@ -349,7 +451,7 @@ class SizeofTests(unittest.TestCase):
         check_sizeof = support.check_sizeof
 
         def test_pickler(self):
-            basesize = support.calcobjsize('6P2n3i2n3i2P')
+            basesize = support.calcobjsize('7P2n3i2n3i2P')
             p = _pickle.Pickler(io.BytesIO())
             self.assertEqual(object.__sizeof__(p), basesize)
             MT_size = struct.calcsize('3nP0n')
@@ -366,7 +468,7 @@ def test_pickler(self):
                 0)  # Write buffer is cleared after every dump().
 
         def test_unpickler(self):
-            basesize = support.calcobjsize('2P2nP 2P2n2i5P 2P3n8P2n2i')
+            basesize = support.calcobjsize('2P2n2P 2P2n2i5P 2P3n8P2n2i')
             unpickler = _pickle.Unpickler
             P = struct.calcsize('P')  # Size of memo table entry.
             n = struct.calcsize('n')  # Size of mark table entry.
@@ -569,7 +671,7 @@ def test_exceptions(self):
                            EncodingWarning,
                            BaseExceptionGroup,
                            ExceptionGroup,
-                           IncompleteInputError):
+                           _IncompleteInputError):
                     continue
                 if exc is not OSError and issubclass(exc, OSError):
                     self.assertEqual(reverse_mapping('builtins', name),
diff --git a/Lib/test/test_pickletools.py b/Lib/test/test_pickletools.py
index d37af79e878a2e..5cb9ce430b4657 100644
--- a/Lib/test/test_pickletools.py
+++ b/Lib/test/test_pickletools.py
@@ -1,3 +1,4 @@
+import io
 import pickle
 import pickletools
 from test import support
@@ -62,6 +63,397 @@ def test_optimize_binput_and_memoize(self):
         self.assertNotIn(pickle.BINPUT, pickled2)
 
 
+class SimpleReader:
+    def __init__(self, data):
+        self.data = data
+        self.pos = 0
+
+    def read(self, n):
+        data = self.data[self.pos: self.pos + n]
+        self.pos += n
+        return data
+
+    def readline(self):
+        nl = self.data.find(b'\n', self.pos) + 1
+        if not nl:
+            nl = len(self.data)
+        data = self.data[self.pos: nl]
+        self.pos = nl
+        return data
+
+
+class GenopsTests(unittest.TestCase):
+    def test_genops(self):
+        it = pickletools.genops(b'(I123\nK\x12J\x12\x34\x56\x78t.')
+        self.assertEqual([(item[0].name,) +  item[1:] for item in it], [
+            ('MARK', None, 0),
+            ('INT', 123, 1),
+            ('BININT1', 0x12, 6),
+            ('BININT', 0x78563412, 8),
+            ('TUPLE', None, 13),
+            ('STOP', None, 14),
+        ])
+
+    def test_from_file(self):
+        f = io.BytesIO(b'prefix(I123\nK\x12J\x12\x34\x56\x78t.suffix')
+        self.assertEqual(f.read(6), b'prefix')
+        it = pickletools.genops(f)
+        self.assertEqual([(item[0].name,) +  item[1:] for item in it], [
+            ('MARK', None, 6),
+            ('INT', 123, 7),
+            ('BININT1', 0x12, 12),
+            ('BININT', 0x78563412, 14),
+            ('TUPLE', None, 19),
+            ('STOP', None, 20),
+        ])
+        self.assertEqual(f.read(), b'suffix')
+
+    def test_without_pos(self):
+        f = SimpleReader(b'(I123\nK\x12J\x12\x34\x56\x78t.')
+        it = pickletools.genops(f)
+        self.assertEqual([(item[0].name,) +  item[1:] for item in it], [
+            ('MARK', None, None),
+            ('INT', 123, None),
+            ('BININT1', 0x12, None),
+            ('BININT', 0x78563412, None),
+            ('TUPLE', None, None),
+            ('STOP', None, None),
+        ])
+
+    def test_no_stop(self):
+        it = pickletools.genops(b'N')
+        item = next(it)
+        self.assertEqual(item[0].name, 'NONE')
+        with self.assertRaisesRegex(ValueError,
+                'pickle exhausted before seeing STOP'):
+            next(it)
+
+    def test_truncated_data(self):
+        it = pickletools.genops(b'I123')
+        with self.assertRaisesRegex(ValueError,
+                'no newline found when trying to read stringnl'):
+            next(it)
+        it = pickletools.genops(b'J\x12\x34')
+        with self.assertRaisesRegex(ValueError,
+                'not enough data in stream to read int4'):
+            next(it)
+
+    def test_unknown_opcode(self):
+        it = pickletools.genops(b'N\xff')
+        item = next(it)
+        self.assertEqual(item[0].name, 'NONE')
+        with self.assertRaisesRegex(ValueError,
+                r"at position 1, opcode b'\\xff' unknown"):
+            next(it)
+
+    def test_unknown_opcode_without_pos(self):
+        f = SimpleReader(b'N\xff')
+        it = pickletools.genops(f)
+        item = next(it)
+        self.assertEqual(item[0].name, 'NONE')
+        with self.assertRaisesRegex(ValueError,
+                r"at position <unknown>, opcode b'\\xff' unknown"):
+            next(it)
+
+
+class DisTests(unittest.TestCase):
+    maxDiff = None
+
+    def check_dis(self, data, expected, **kwargs):
+        out = io.StringIO()
+        pickletools.dis(data, out=out, **kwargs)
+        self.assertEqual(out.getvalue(), expected)
+
+    def check_dis_error(self, data, expected, expected_error, **kwargs):
+        out = io.StringIO()
+        with self.assertRaisesRegex(ValueError, expected_error):
+            pickletools.dis(data, out=out, **kwargs)
+        self.assertEqual(out.getvalue(), expected)
+
+    def test_mark(self):
+        self.check_dis(b'(N(tl.', '''\
+    0: (    MARK
+    1: N        NONE
+    2: (        MARK
+    3: t            TUPLE      (MARK at 2)
+    4: l        LIST       (MARK at 0)
+    5: .    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_indentlevel(self):
+        self.check_dis(b'(N(tl.', '''\
+    0: (    MARK
+    1: N      NONE
+    2: (      MARK
+    3: t        TUPLE      (MARK at 2)
+    4: l      LIST       (MARK at 0)
+    5: .    STOP
+highest protocol among opcodes = 0
+''', indentlevel=2)
+
+    def test_mark_without_pos(self):
+        self.check_dis(SimpleReader(b'(N(tl.'), '''\
+(    MARK
+N        NONE
+(        MARK
+t            TUPLE      (MARK at unknown opcode offset)
+l        LIST       (MARK at unknown opcode offset)
+.    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_no_mark(self):
+        self.check_dis_error(b'Nt.', '''\
+    0: N    NONE
+    1: t    TUPLE      no MARK exists on stack
+''', 'no MARK exists on stack')
+
+    def test_put(self):
+        self.check_dis(b'Np0\nq\x01r\x02\x00\x00\x00\x94.', '''\
+    0: N    NONE
+    1: p    PUT        0
+    4: q    BINPUT     1
+    6: r    LONG_BINPUT 2
+   11: \\x94 MEMOIZE    (as 3)
+   12: .    STOP
+highest protocol among opcodes = 4
+''')
+
+    def test_put_redefined(self):
+        self.check_dis_error(b'Np1\np1\n.', '''\
+    0: N    NONE
+    1: p    PUT        1
+    4: p    PUT        1
+''', 'memo key 1 already defined')
+        self.check_dis_error(b'Np1\nq\x01.', '''\
+    0: N    NONE
+    1: p    PUT        1
+    4: q    BINPUT     1
+''', 'memo key 1 already defined')
+        self.check_dis_error(b'Np1\nr\x01\x00\x00\x00.', '''\
+    0: N    NONE
+    1: p    PUT        1
+    4: r    LONG_BINPUT 1
+''', 'memo key 1 already defined')
+        self.check_dis_error(b'Np1\n\x94.', '''\
+    0: N    NONE
+    1: p    PUT        1
+    4: \\x94 MEMOIZE    (as 1)
+''', 'memo key None already defined')
+
+    def test_put_empty_stack(self):
+        self.check_dis_error(b'p0\n', '''\
+    0: p    PUT        0
+''', "stack is empty -- can't store into memo")
+
+    def test_put_markobject(self):
+        self.check_dis_error(b'(p0\n', '''\
+    0: (    MARK
+    1: p        PUT        0
+''', "can't store markobject in the memo")
+
+    def test_get(self):
+        self.check_dis(b'(Np1\ng1\nh\x01j\x01\x00\x00\x00t.', '''\
+    0: (    MARK
+    1: N        NONE
+    2: p        PUT        1
+    5: g        GET        1
+    8: h        BINGET     1
+   10: j        LONG_BINGET 1
+   15: t        TUPLE      (MARK at 0)
+   16: .    STOP
+highest protocol among opcodes = 1
+''')
+
+    def test_get_without_put(self):
+        self.check_dis_error(b'g1\n.', '''\
+    0: g    GET        1
+''', 'memo key 1 has never been stored into')
+        self.check_dis_error(b'h\x01.', '''\
+    0: h    BINGET     1
+''', 'memo key 1 has never been stored into')
+        self.check_dis_error(b'j\x01\x00\x00\x00.', '''\
+    0: j    LONG_BINGET 1
+''', 'memo key 1 has never been stored into')
+
+    def test_memo(self):
+        memo = {}
+        self.check_dis(b'Np1\n.', '''\
+    0: N    NONE
+    1: p    PUT        1
+    4: .    STOP
+highest protocol among opcodes = 0
+''', memo=memo)
+        self.check_dis(b'g1\n.', '''\
+    0: g    GET        1
+    3: .    STOP
+highest protocol among opcodes = 0
+''', memo=memo)
+
+    def test_mark_pop(self):
+        self.check_dis(b'(N00N.', '''\
+    0: (    MARK
+    1: N        NONE
+    2: 0        POP
+    3: 0        POP        (MARK at 0)
+    4: N    NONE
+    5: .    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_too_small_stack(self):
+        self.check_dis_error(b'a', '''\
+    0: a    APPEND
+''', 'tries to pop 2 items from stack with only 0 items')
+        self.check_dis_error(b']a', '''\
+    0: ]    EMPTY_LIST
+    1: a    APPEND
+''', 'tries to pop 2 items from stack with only 1 items')
+
+    def test_no_stop(self):
+        self.check_dis_error(b'N', '''\
+    0: N    NONE
+''', 'pickle exhausted before seeing STOP')
+
+    def test_truncated_data(self):
+        self.check_dis_error(b'NI123', '''\
+    0: N    NONE
+''', 'no newline found when trying to read stringnl')
+        self.check_dis_error(b'NJ\x12\x34', '''\
+    0: N    NONE
+''', 'not enough data in stream to read int4')
+
+    def test_unknown_opcode(self):
+        self.check_dis_error(b'N\xff', '''\
+    0: N    NONE
+''', r"at position 1, opcode b'\\xff' unknown")
+
+    def test_stop_not_empty_stack(self):
+        self.check_dis_error(b']N.', '''\
+    0: ]    EMPTY_LIST
+    1: N    NONE
+    2: .    STOP
+highest protocol among opcodes = 1
+''', r'stack not empty after STOP: \[list\]')
+
+    def test_annotate(self):
+        self.check_dis(b'(Nt.', '''\
+    0: (    MARK Push markobject onto the stack.
+    1: N        NONE Push None on the stack.
+    2: t        TUPLE      (MARK at 0) Build a tuple out of the topmost stack slice, after markobject.
+    3: .    STOP                       Stop the unpickling machine.
+highest protocol among opcodes = 0
+''', annotate=1)
+        self.check_dis(b'(Nt.', '''\
+    0: (    MARK            Push markobject onto the stack.
+    1: N        NONE        Push None on the stack.
+    2: t        TUPLE      (MARK at 0) Build a tuple out of the topmost stack slice, after markobject.
+    3: .    STOP                       Stop the unpickling machine.
+highest protocol among opcodes = 0
+''', annotate=20)
+        self.check_dis(b'(((((((ttttttt.', '''\
+    0: (    MARK            Push markobject onto the stack.
+    1: (        MARK        Push markobject onto the stack.
+    2: (            MARK    Push markobject onto the stack.
+    3: (                MARK Push markobject onto the stack.
+    4: (                    MARK Push markobject onto the stack.
+    5: (                        MARK Push markobject onto the stack.
+    6: (                            MARK Push markobject onto the stack.
+    7: t                                TUPLE      (MARK at 6) Build a tuple out of the topmost stack slice, after markobject.
+    8: t                            TUPLE      (MARK at 5) Build a tuple out of the topmost stack slice, after markobject.
+    9: t                        TUPLE      (MARK at 4) Build a tuple out of the topmost stack slice, after markobject.
+   10: t                    TUPLE      (MARK at 3)     Build a tuple out of the topmost stack slice, after markobject.
+   11: t                TUPLE      (MARK at 2)         Build a tuple out of the topmost stack slice, after markobject.
+   12: t            TUPLE      (MARK at 1)             Build a tuple out of the topmost stack slice, after markobject.
+   13: t        TUPLE      (MARK at 0)                 Build a tuple out of the topmost stack slice, after markobject.
+   14: .    STOP                                       Stop the unpickling machine.
+highest protocol among opcodes = 0
+''', annotate=20)
+
+    def test_string(self):
+        self.check_dis(b"S'abc'\n.", '''\
+    0: S    STRING     'abc'
+    7: .    STOP
+highest protocol among opcodes = 0
+''')
+        self.check_dis(b'S"abc"\n.', '''\
+    0: S    STRING     'abc'
+    7: .    STOP
+highest protocol among opcodes = 0
+''')
+        self.check_dis(b"S'\xc3\xb5'\n.", '''\
+    0: S    STRING     '\\xc3\\xb5'
+    6: .    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_string_without_quotes(self):
+        self.check_dis_error(b"Sabc'\n.", '',
+                             'no string quotes around b"abc\'"')
+        self.check_dis_error(b'Sabc"\n.', '',
+                             "no string quotes around b'abc\"'")
+        self.check_dis_error(b"S'abc\n.", '',
+                             '''strinq quote b"'" not found at both ends of b"'abc"''')
+        self.check_dis_error(b'S"abc\n.', '',
+                             r"""strinq quote b'"' not found at both ends of b'"abc'""")
+        self.check_dis_error(b"S'abc\"\n.", '',
+                             r"""strinq quote b"'" not found at both ends of b'\\'abc"'""")
+        self.check_dis_error(b"S\"abc'\n.", '',
+                             r"""strinq quote b'"' not found at both ends of b'"abc\\''""")
+
+    def test_binstring(self):
+        self.check_dis(b"T\x03\x00\x00\x00abc.", '''\
+    0: T    BINSTRING  'abc'
+    8: .    STOP
+highest protocol among opcodes = 1
+''')
+        self.check_dis(b"T\x02\x00\x00\x00\xc3\xb5.", '''\
+    0: T    BINSTRING  '\\xc3\\xb5'
+    7: .    STOP
+highest protocol among opcodes = 1
+''')
+
+    def test_short_binstring(self):
+        self.check_dis(b"U\x03abc.", '''\
+    0: U    SHORT_BINSTRING 'abc'
+    5: .    STOP
+highest protocol among opcodes = 1
+''')
+        self.check_dis(b"U\x02\xc3\xb5.", '''\
+    0: U    SHORT_BINSTRING '\\xc3\\xb5'
+    4: .    STOP
+highest protocol among opcodes = 1
+''')
+
+    def test_global(self):
+        self.check_dis(b"cmodule\nname\n.", '''\
+    0: c    GLOBAL     'module name'
+   13: .    STOP
+highest protocol among opcodes = 0
+''')
+        self.check_dis(b"cm\xc3\xb6dule\nn\xc3\xa4me\n.", '''\
+    0: c    GLOBAL     'm\xf6dule n\xe4me'
+   15: .    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_inst(self):
+        self.check_dis(b"(imodule\nname\n.", '''\
+    0: (    MARK
+    1: i        INST       'module name' (MARK at 0)
+   14: .    STOP
+highest protocol among opcodes = 0
+''')
+
+    def test_persid(self):
+        self.check_dis(b"Pabc\n.", '''\
+    0: P    PERSID     'abc'
+    5: .    STOP
+highest protocol among opcodes = 0
+''')
+
+
 class MiscTestCase(unittest.TestCase):
     def test__all__(self):
         not_exported = {
diff --git a/Lib/test/test_pkgutil.py b/Lib/test/test_pkgutil.py
index e19dce1dbd2583..ca6927554b053c 100644
--- a/Lib/test/test_pkgutil.py
+++ b/Lib/test/test_pkgutil.py
@@ -13,6 +13,7 @@
 import zipfile
 
 from test.support.import_helper import DirsOnSysPath
+from test.support.os_helper import FakePath
 from test.test_importlib.util import uncache
 
 # Note: pkgutil.walk_packages is currently tested in test_runpy. This is
@@ -121,7 +122,7 @@ def test_issue44061_iter_modules(self):
 
             # make sure iter_modules accepts Path objects
             names = []
-            for moduleinfo in pkgutil.iter_modules([Path(zip_file)]):
+            for moduleinfo in pkgutil.iter_modules([FakePath(zip_file)]):
                 self.assertIsInstance(moduleinfo, pkgutil.ModuleInfo)
                 names.append(moduleinfo.name)
             self.assertEqual(names, [pkg])
@@ -521,7 +522,43 @@ def test_mixed_namespace(self):
         del sys.modules['foo.bar']
         del sys.modules['foo.baz']
 
-    # XXX: test .pkg files
+
+    def test_extend_path_argument_types(self):
+        pkgname = 'foo'
+        dirname_0 = self.create_init(pkgname)
+
+        # If the input path is not a list it is returned unchanged
+        self.assertEqual('notalist', pkgutil.extend_path('notalist', 'foo'))
+        self.assertEqual(('not', 'a', 'list'), pkgutil.extend_path(('not', 'a', 'list'), 'foo'))
+        self.assertEqual(123, pkgutil.extend_path(123, 'foo'))
+        self.assertEqual(None, pkgutil.extend_path(None, 'foo'))
+
+        # Cleanup
+        shutil.rmtree(dirname_0)
+        del sys.path[0]
+
+
+    def test_extend_path_pkg_files(self):
+        pkgname = 'foo'
+        dirname_0 = self.create_init(pkgname)
+
+        with open(os.path.join(dirname_0, 'bar.pkg'), 'w') as pkg_file:
+            pkg_file.write('\n'.join([
+                'baz',
+                '/foo/bar/baz',
+                '',
+                '#comment'
+            ]))
+
+        extended_paths = pkgutil.extend_path(sys.path, 'bar')
+
+        self.assertEqual(extended_paths[:-2], sys.path)
+        self.assertEqual(extended_paths[-2], 'baz')
+        self.assertEqual(extended_paths[-1], '/foo/bar/baz')
+
+        # Cleanup
+        shutil.rmtree(dirname_0)
+        del sys.path[0]
 
 
 class NestedNamespacePackageTest(unittest.TestCase):
@@ -587,8 +624,11 @@ def test_get_loader_handles_missing_spec_attribute(self):
         mod = type(sys)(name)
         del mod.__spec__
         with CleanImport(name):
-            sys.modules[name] = mod
-            loader = pkgutil.get_loader(name)
+            try:
+                sys.modules[name] = mod
+                loader = pkgutil.get_loader(name)
+            finally:
+                sys.modules.pop(name, None)
         self.assertIsNone(loader)
 
     @ignore_warnings(category=DeprecationWarning)
@@ -597,8 +637,11 @@ def test_get_loader_handles_spec_attribute_none(self):
         mod = type(sys)(name)
         mod.__spec__ = None
         with CleanImport(name):
-            sys.modules[name] = mod
-            loader = pkgutil.get_loader(name)
+            try:
+                sys.modules[name] = mod
+                loader = pkgutil.get_loader(name)
+            finally:
+                sys.modules.pop(name, None)
         self.assertIsNone(loader)
 
     @ignore_warnings(category=DeprecationWarning)
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 7e5f04c22bd6d3..ef9d617f66feec 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -6,12 +6,14 @@
 from test.support import warnings_helper
 from test.support.script_helper import assert_python_ok
 
+import copy
 import errno
 import sys
 import signal
 import time
 import os
 import platform
+import pickle
 import stat
 import tempfile
 import unittest
@@ -411,8 +413,10 @@ def test_posix_fallocate(self):
             # issue33655: Also ignore EINVAL on *BSD since ZFS is also
             # often used there.
             if inst.errno == errno.EINVAL and sys.platform.startswith(
-                ('sunos', 'freebsd', 'netbsd', 'openbsd', 'gnukfreebsd')):
+                ('sunos', 'freebsd', 'openbsd', 'gnukfreebsd')):
                 raise unittest.SkipTest("test may fail on ZFS filesystems")
+            elif inst.errno == errno.EOPNOTSUPP and sys.platform.startswith("netbsd"):
+                raise unittest.SkipTest("test may fail on FFS filesystems")
             else:
                 raise
         finally:
@@ -704,7 +708,8 @@ def test_makedev(self):
         self.assertEqual(posix.major(dev), major)
         self.assertRaises(TypeError, posix.major, float(dev))
         self.assertRaises(TypeError, posix.major)
-        self.assertRaises((ValueError, OverflowError), posix.major, -1)
+        for x in -2, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.major, x)
 
         minor = posix.minor(dev)
         self.assertIsInstance(minor, int)
@@ -712,13 +717,23 @@ def test_makedev(self):
         self.assertEqual(posix.minor(dev), minor)
         self.assertRaises(TypeError, posix.minor, float(dev))
         self.assertRaises(TypeError, posix.minor)
-        self.assertRaises((ValueError, OverflowError), posix.minor, -1)
+        for x in -2, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.minor, x)
 
         self.assertEqual(posix.makedev(major, minor), dev)
         self.assertRaises(TypeError, posix.makedev, float(major), minor)
         self.assertRaises(TypeError, posix.makedev, major, float(minor))
         self.assertRaises(TypeError, posix.makedev, major)
         self.assertRaises(TypeError, posix.makedev)
+        for x in -2, 2**32, 2**64, -2**63-1:
+            self.assertRaises((ValueError, OverflowError), posix.makedev, x, minor)
+            self.assertRaises((ValueError, OverflowError), posix.makedev, major, x)
+
+        if sys.platform == 'linux':
+            NODEV = -1
+            self.assertEqual(posix.major(NODEV), NODEV)
+            self.assertEqual(posix.minor(NODEV), NODEV)
+            self.assertEqual(posix.makedev(NODEV, NODEV), NODEV)
 
     def _test_all_chown_common(self, chown_func, first_param, stat_func):
         """Common code for chown, fchown and lchown tests."""
@@ -1258,7 +1273,7 @@ def test_sched_priority(self):
         self.assertIsInstance(lo, int)
         self.assertIsInstance(hi, int)
         self.assertGreaterEqual(hi, lo)
-        # Apple plaforms return 15 without checking the argument.
+        # Apple platforms return 15 without checking the argument.
         if not is_apple:
             self.assertRaises(OSError, posix.sched_get_priority_min, -23)
             self.assertRaises(OSError, posix.sched_get_priority_max, -23)
@@ -1304,6 +1319,25 @@ def test_get_and_set_scheduler_and_param(self):
         param = posix.sched_param(sched_priority=-large)
         self.assertRaises(OverflowError, posix.sched_setparam, 0, param)
 
+    @requires_sched
+    def test_sched_param(self):
+        param = posix.sched_param(1)
+        for proto in range(pickle.HIGHEST_PROTOCOL+1):
+            newparam = pickle.loads(pickle.dumps(param, proto))
+            self.assertEqual(newparam, param)
+        newparam = copy.copy(param)
+        self.assertIsNot(newparam, param)
+        self.assertEqual(newparam, param)
+        newparam = copy.deepcopy(param)
+        self.assertIsNot(newparam, param)
+        self.assertEqual(newparam, param)
+        newparam = copy.replace(param)
+        self.assertIsNot(newparam, param)
+        self.assertEqual(newparam, param)
+        newparam = copy.replace(param, sched_priority=0)
+        self.assertNotEqual(newparam, param)
+        self.assertEqual(newparam.sched_priority, 0)
+
     @unittest.skipUnless(hasattr(posix, "sched_rr_get_interval"), "no function")
     def test_sched_rr_get_interval(self):
         try:
@@ -2129,6 +2163,13 @@ def test_stat(self):
             with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"):
                 os.stat("file", dir_fd=0)
 
+    def test_ptsname_r(self):
+        self._verify_available("HAVE_PTSNAME_R")
+        if self.mac_ver >= (10, 13, 4):
+            self.assertIn("HAVE_PTSNAME_R", posix._have_functions)
+        else:
+            self.assertNotIn("HAVE_PTSNAME_R", posix._have_functions)
+
     def test_access(self):
         self._verify_available("HAVE_FACCESSAT")
         if self.mac_ver >= (10, 10):
diff --git a/Lib/test/test_posixpath.py b/Lib/test/test_posixpath.py
index 32a20efbb64e1d..43e4fbc610e5f7 100644
--- a/Lib/test/test_posixpath.py
+++ b/Lib/test/test_posixpath.py
@@ -1,11 +1,12 @@
+import inspect
 import os
 import posixpath
 import sys
 import unittest
 from posixpath import realpath, abspath, dirname, basename
 from test import test_genericpath
-from test.support import import_helper
-from test.support import os_helper
+from test.support import get_attribute, import_helper
+from test.support import cpython_only, os_helper
 from test.support.os_helper import FakePath
 from unittest import mock
 
@@ -283,6 +284,16 @@ def fake_lstat(path):
     def test_isjunction(self):
         self.assertFalse(posixpath.isjunction(ABSTFN))
 
+    @unittest.skipIf(sys.platform == 'win32', "Fast paths are not for win32")
+    @cpython_only
+    def test_fast_paths_in_use(self):
+        # There are fast paths of these functions implemented in posixmodule.c.
+        # Confirm that they are being used, and not the Python fallbacks
+        self.assertTrue(os.path.splitroot is posix._path_splitroot_ex)
+        self.assertFalse(inspect.isfunction(os.path.splitroot))
+        self.assertTrue(os.path.normpath is posix._path_normpath)
+        self.assertFalse(inspect.isfunction(os.path.normpath))
+
     def test_expanduser(self):
         self.assertEqual(posixpath.expanduser("foo"), "foo")
         self.assertEqual(posixpath.expanduser(b"foo"), b"foo")
@@ -348,13 +359,19 @@ def test_expanduser_pwd(self):
                      "no home directory on VxWorks")
     def test_expanduser_pwd2(self):
         pwd = import_helper.import_module('pwd')
-        for e in pwd.getpwall():
-            name = e.pw_name
-            home = e.pw_dir
+        for all_entry in get_attribute(pwd, 'getpwall')():
+            name = all_entry.pw_name
+
+            # gh-121200: pw_dir can be different between getpwall() and
+            # getpwnam(), so use getpwnam() pw_dir as expanduser() does.
+            entry = pwd.getpwnam(name)
+            home = entry.pw_dir
             home = home.rstrip('/') or '/'
-            self.assertEqual(posixpath.expanduser('~' + name), home)
-            self.assertEqual(posixpath.expanduser(os.fsencode('~' + name)),
-                             os.fsencode(home))
+
+            with self.subTest(all_entry=all_entry, entry=entry):
+                self.assertEqual(posixpath.expanduser('~' + name), home)
+                self.assertEqual(posixpath.expanduser(os.fsencode('~' + name)),
+                                 os.fsencode(home))
 
     NORMPATH_CASES = [
         ("", "."),
@@ -362,6 +379,7 @@ def test_expanduser_pwd2(self):
         ("/.", "/"),
         ("/./", "/"),
         ("/.//.", "/"),
+        ("/./foo/bar", "/foo/bar"),
         ("/foo", "/foo"),
         ("/foo/bar", "/foo/bar"),
         ("//", "//"),
@@ -371,6 +389,7 @@ def test_expanduser_pwd2(self):
         ("///..//./foo/.//bar", "/foo/bar"),
         (".", "."),
         (".//.", "."),
+        ("./foo/bar", "foo/bar"),
         ("..", ".."),
         ("../", ".."),
         ("../foo", "../foo"),
@@ -660,6 +679,83 @@ def test_realpath_resolve_first(self):
             safe_rmdir(ABSTFN + "/k")
             safe_rmdir(ABSTFN)
 
+    @os_helper.skip_unless_symlink
+    @skip_if_ABSTFN_contains_backslash
+    @unittest.skipIf(os.chmod not in os.supports_follow_symlinks, "Can't set symlink permissions")
+    @unittest.skipIf(sys.platform != "darwin", "only macOS requires read permission to readlink()")
+    def test_realpath_unreadable_symlink(self):
+        try:
+            os.symlink(ABSTFN+"1", ABSTFN)
+            os.chmod(ABSTFN, 0o000, follow_symlinks=False)
+            self.assertEqual(realpath(ABSTFN), ABSTFN)
+            self.assertEqual(realpath(ABSTFN + '/foo'), ABSTFN + '/foo')
+            self.assertEqual(realpath(ABSTFN + '/../foo'), dirname(ABSTFN) + '/foo')
+            self.assertEqual(realpath(ABSTFN + '/foo/..'), ABSTFN)
+            with self.assertRaises(PermissionError):
+                realpath(ABSTFN, strict=True)
+        finally:
+            os.chmod(ABSTFN, 0o755, follow_symlinks=False)
+            os.unlink(ABSTFN)
+
+    @skip_if_ABSTFN_contains_backslash
+    def test_realpath_nonterminal_file(self):
+        try:
+            with open(ABSTFN, 'w') as f:
+                f.write('test_posixpath wuz ere')
+            self.assertEqual(realpath(ABSTFN, strict=False), ABSTFN)
+            self.assertEqual(realpath(ABSTFN, strict=True), ABSTFN)
+            self.assertEqual(realpath(ABSTFN + "/", strict=False), ABSTFN)
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/.", strict=False), ABSTFN)
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/.", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/..", strict=False), dirname(ABSTFN))
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/..", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/subdir", strict=False), ABSTFN + "/subdir")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/subdir", strict=True)
+        finally:
+            os_helper.unlink(ABSTFN)
+
+    @os_helper.skip_unless_symlink
+    @skip_if_ABSTFN_contains_backslash
+    def test_realpath_nonterminal_symlink_to_file(self):
+        try:
+            with open(ABSTFN + "1", 'w') as f:
+                f.write('test_posixpath wuz ere')
+            os.symlink(ABSTFN + "1", ABSTFN)
+            self.assertEqual(realpath(ABSTFN, strict=False), ABSTFN + "1")
+            self.assertEqual(realpath(ABSTFN, strict=True), ABSTFN + "1")
+            self.assertEqual(realpath(ABSTFN + "/", strict=False), ABSTFN + "1")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/.", strict=False), ABSTFN + "1")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/.", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/..", strict=False), dirname(ABSTFN))
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/..", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/subdir", strict=False), ABSTFN + "1/subdir")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/subdir", strict=True)
+        finally:
+            os_helper.unlink(ABSTFN)
+
+    @os_helper.skip_unless_symlink
+    @skip_if_ABSTFN_contains_backslash
+    def test_realpath_nonterminal_symlink_to_symlinks_to_file(self):
+        try:
+            with open(ABSTFN + "2", 'w') as f:
+                f.write('test_posixpath wuz ere')
+            os.symlink(ABSTFN + "2", ABSTFN + "1")
+            os.symlink(ABSTFN + "1", ABSTFN)
+            self.assertEqual(realpath(ABSTFN, strict=False), ABSTFN + "2")
+            self.assertEqual(realpath(ABSTFN, strict=True), ABSTFN + "2")
+            self.assertEqual(realpath(ABSTFN + "/", strict=False), ABSTFN + "2")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/.", strict=False), ABSTFN + "2")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/.", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/..", strict=False), dirname(ABSTFN))
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/..", strict=True)
+            self.assertEqual(realpath(ABSTFN + "/subdir", strict=False), ABSTFN + "2/subdir")
+            self.assertRaises(NotADirectoryError, realpath, ABSTFN + "/subdir", strict=True)
+        finally:
+            os_helper.unlink(ABSTFN)
+
     def test_relpath(self):
         (real_getcwd, os.getcwd) = (os.getcwd, lambda: r"/home/user/bar")
         try:
diff --git a/Lib/test/test_property.py b/Lib/test/test_property.py
index 408e64f53142db..cea241b0f200d0 100644
--- a/Lib/test/test_property.py
+++ b/Lib/test/test_property.py
@@ -438,7 +438,7 @@ def getter3(self):
         self.assertEqual(p2.__doc__, "doc-A")
 
         # Case-3: with no user-provided doc new getter doc
-        #         takes precendence
+        #         takes precedence
         p = property(getter2, None, None, None)
 
         p2 = p.getter(getter3)
@@ -463,6 +463,40 @@ def getter3(self):
         self.assertEqual(p.__doc__, "user")
         self.assertEqual(p2.__doc__, "user")
 
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    def test_prefer_explicit_doc(self):
+        # Issue 25757: subclasses of property lose docstring
+        self.assertEqual(property(doc="explicit doc").__doc__, "explicit doc")
+        self.assertEqual(PropertySub(doc="explicit doc").__doc__, "explicit doc")
+
+        class Foo:
+            spam = PropertySub(doc="spam explicit doc")
+
+            @spam.getter
+            def spam(self):
+                """ignored as doc already set"""
+                return 1
+
+            def _stuff_getter(self):
+                """ignored as doc set directly"""
+            stuff = PropertySub(doc="stuff doc argument", fget=_stuff_getter)
+
+        #self.assertEqual(Foo.spam.__doc__, "spam explicit doc")
+        self.assertEqual(Foo.stuff.__doc__, "stuff doc argument")
+
+    def test_property_no_doc_on_getter(self):
+        # If a property's getter has no __doc__ then the property's doc should
+        # be None; test that this is consistent with subclasses as well; see
+        # GH-2487
+        class NoDoc:
+            @property
+            def __doc__(self):
+                raise AttributeError
+
+        self.assertEqual(property(NoDoc()).__doc__, None)
+        self.assertEqual(PropertySub(NoDoc()).__doc__, None)
+
     @unittest.skipIf(sys.flags.optimize >= 2,
                      "Docstrings are omitted with -O2 and above")
     def test_property_setter_copies_getter_docstring(self):
diff --git a/Lib/test/test_pyclbr.py b/Lib/test/test_pyclbr.py
index 46206accbafc36..a65705aaf53abc 100644
--- a/Lib/test/test_pyclbr.py
+++ b/Lib/test/test_pyclbr.py
@@ -10,6 +10,7 @@
 from unittest import TestCase, main as unittest_main
 from test.test_importlib import util as test_importlib_util
 import warnings
+from test.support.testcase import ExtraAssertions
 
 
 StaticMethodType = type(staticmethod(lambda: None))
@@ -22,7 +23,7 @@
 # is imperfect (as designed), testModule is called with a set of
 # members to ignore.
 
-class PyclbrTest(TestCase):
+class PyclbrTest(TestCase, ExtraAssertions):
 
     def assertListEq(self, l1, l2, ignore):
         ''' succeed iff {l1} - {ignore} == {l2} - {ignore} '''
@@ -31,14 +32,6 @@ def assertListEq(self, l1, l2, ignore):
             print("l1=%r\nl2=%r\nignore=%r" % (l1, l2, ignore), file=sys.stderr)
             self.fail("%r missing" % missing.pop())
 
-    def assertHasattr(self, obj, attr, ignore):
-        ''' succeed iff hasattr(obj,attr) or attr in ignore. '''
-        if attr in ignore: return
-        if not hasattr(obj, attr): print("???", attr)
-        self.assertTrue(hasattr(obj, attr),
-                        'expected hasattr(%r, %r)' % (obj, attr))
-
-
     def assertHaskey(self, obj, key, ignore):
         ''' succeed iff key in obj or key in ignore. '''
         if key in ignore: return
@@ -78,14 +71,15 @@ def ismethod(oclass, obj, name):
 
             objname = obj.__name__
             if objname.startswith("__") and not objname.endswith("__"):
-                objname = "_%s%s" % (oclass.__name__, objname)
+                if stripped_typename := oclass.__name__.lstrip('_'):
+                    objname = f"_{stripped_typename}{objname}"
             return objname == name
 
         # Make sure the toplevel functions and classes are the same.
         for name, value in dict.items():
             if name in ignore:
                 continue
-            self.assertHasattr(module, name, ignore)
+            self.assertHasAttr(module, name, ignore)
             py_item = getattr(module, name)
             if isinstance(value, pyclbr.Function):
                 self.assertIsInstance(py_item, (FunctionType, BuiltinFunctionType))
@@ -111,12 +105,16 @@ def ismethod(oclass, obj, name):
                 for m in py_item.__dict__.keys():
                     if ismethod(py_item, getattr(py_item, m), m):
                         actualMethods.append(m)
-                foundMethods = []
-                for m in value.methods.keys():
-                    if m[:2] == '__' and m[-2:] != '__':
-                        foundMethods.append('_'+name+m)
-                    else:
-                        foundMethods.append(m)
+
+                if stripped_typename := name.lstrip('_'):
+                    foundMethods = []
+                    for m in value.methods.keys():
+                        if m.startswith('__') and not m.endswith('__'):
+                            foundMethods.append(f"_{stripped_typename}{m}")
+                        else:
+                            foundMethods.append(m)
+                else:
+                    foundMethods = list(value.methods.keys())
 
                 try:
                     self.assertListEq(foundMethods, actualMethods, ignore)
@@ -150,8 +148,9 @@ def test_easy(self):
                                             "DocTestCase", '_DocTestSuite'))
         self.checkModule('difflib', ignore=("Match",))
 
-    def test_decorators(self):
-        self.checkModule('test.pyclbr_input', ignore=['om'])
+    def test_cases(self):
+        # see test.pyclbr_input for the rationale behind the ignored symbols
+        self.checkModule('test.pyclbr_input', ignore=['om', 'f'])
 
     def test_nested(self):
         mb = pyclbr
diff --git a/Lib/test/test_pydoc/test_pydoc.py b/Lib/test/test_pydoc/test_pydoc.py
index 436fdb38756ddd..9cc2252e29367d 100644
--- a/Lib/test/test_pydoc/test_pydoc.py
+++ b/Lib/test/test_pydoc/test_pydoc.py
@@ -4,6 +4,7 @@
 import contextlib
 import importlib.util
 import inspect
+import io
 import pydoc
 import py_compile
 import keyword
@@ -17,6 +18,7 @@
 import types
 import typing
 import unittest
+import unittest.mock
 import urllib.parse
 import xml.etree
 import xml.etree.ElementTree
@@ -30,7 +32,7 @@
 from test.support.script_helper import (assert_python_ok,
                                         assert_python_failure, spawn_python)
 from test.support import threading_helper
-from test.support import (reap_children, captured_output, captured_stdout,
+from test.support import (reap_children, captured_stdout,
                           captured_stderr, is_emscripten, is_wasi,
                           requires_docstrings, MISSING_C_DOCSTRINGS)
 from test.support.os_helper import (TESTFN, rmtree, unlink)
@@ -379,6 +381,11 @@ def html2text(html):
 
 
 class PydocBaseTest(unittest.TestCase):
+    def tearDown(self):
+        # Self-testing. Mocking only works if sys.modules['pydoc'] and pydoc
+        # are the same. But some pydoc functions reload the module and change
+        # sys.modules, so check that it was restored.
+        self.assertIs(sys.modules['pydoc'], pydoc)
 
     def _restricted_walk_packages(self, walk_packages, path=None):
         """
@@ -410,6 +417,8 @@ def call_url_handler(self, url, expected_title):
 
 class PydocDocTest(unittest.TestCase):
     maxDiff = None
+    def tearDown(self):
+        self.assertIs(sys.modules['pydoc'], pydoc)
 
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'trace function introduces __locals__ unexpectedly')
@@ -658,16 +667,13 @@ def test_fail_help_output_redirect(self):
 
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'trace function introduces __locals__ unexpectedly')
+    @unittest.mock.patch('pydoc.pager')
     @requires_docstrings
-    def test_help_output_redirect(self):
+    def test_help_output_redirect(self, pager_mock):
         # issue 940286, if output is set in Helper, then all output from
         # Helper.help should be redirected
-        getpager_old = pydoc.getpager
-        getpager_new = lambda: (lambda x: x)
         self.maxDiff = None
 
-        buf = StringIO()
-        helper = pydoc.Helper(output=buf)
         unused, doc_loc = get_pydoc_text(pydoc_mod)
         module = "test.test_pydoc.pydoc_mod"
         help_header = """
@@ -677,26 +683,153 @@ def test_help_output_redirect(self):
         help_header = textwrap.dedent(help_header)
         expected_help_pattern = help_header + expected_text_pattern
 
-        pydoc.getpager = getpager_new
-        try:
-            with captured_output('stdout') as output, \
-                 captured_output('stderr') as err:
-                helper.help(module)
+        with captured_stdout() as output, captured_stderr() as err:
+            buf = StringIO()
+            helper = pydoc.Helper(output=buf)
+            helper.help(module)
+            result = buf.getvalue().strip()
+            expected_text = expected_help_pattern % (
+                            (doc_loc,) +
+                            expected_text_data_docstrings +
+                            (inspect.getabsfile(pydoc_mod),))
+            self.assertEqual('', output.getvalue())
+            self.assertEqual('', err.getvalue())
+            self.assertEqual(expected_text, result)
+
+        pager_mock.assert_not_called()
+
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    @requires_docstrings
+    @unittest.mock.patch('pydoc.pager')
+    def test_help_output_redirect_various_requests(self, pager_mock):
+        # issue 940286, if output is set in Helper, then all output from
+        # Helper.help should be redirected
+
+        def run_pydoc_for_request(request, expected_text_part):
+            """Helper function to run pydoc with its output redirected"""
+            with captured_stdout() as output, captured_stderr() as err:
+                buf = StringIO()
+                helper = pydoc.Helper(output=buf)
+                helper.help(request)
                 result = buf.getvalue().strip()
-                expected_text = expected_help_pattern % (
-                                (doc_loc,) +
-                                expected_text_data_docstrings +
-                                (inspect.getabsfile(pydoc_mod),))
-                self.assertEqual('', output.getvalue())
+                self.assertEqual('', output.getvalue(), msg=f'failed on request "{request}"')
+                self.assertEqual('', err.getvalue(), msg=f'failed on request "{request}"')
+                self.assertIn(expected_text_part, result, msg=f'failed on request "{request}"')
+                pager_mock.assert_not_called()
+
+        self.maxDiff = None
+
+        # test for "keywords"
+        run_pydoc_for_request('keywords', 'Here is a list of the Python keywords.')
+        # test for "symbols"
+        run_pydoc_for_request('symbols', 'Here is a list of the punctuation symbols')
+        # test for "topics"
+        run_pydoc_for_request('topics', 'Here is a list of available topics.')
+        # test for "modules" skipped, see test_modules()
+        # test for symbol "%"
+        run_pydoc_for_request('%', 'The power operator')
+        # test for special True, False, None keywords
+        run_pydoc_for_request('True', 'class bool(int)')
+        run_pydoc_for_request('False', 'class bool(int)')
+        run_pydoc_for_request('None', 'class NoneType(object)')
+        # test for keyword "assert"
+        run_pydoc_for_request('assert', 'The "assert" statement')
+        # test for topic "TYPES"
+        run_pydoc_for_request('TYPES', 'The standard type hierarchy')
+        # test for "pydoc.Helper.help"
+        run_pydoc_for_request('pydoc.Helper.help', 'Help on function help in pydoc.Helper:')
+        # test for pydoc.Helper.help
+        run_pydoc_for_request(pydoc.Helper.help, 'Help on function help in module pydoc:')
+        # test for pydoc.Helper() instance skipped because it is always meant to be interactive
+
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    @requires_docstrings
+    def test_help_output_pager(self):
+        def run_pydoc_pager(request, what, expected_first_line):
+            with (captured_stdout() as output,
+                  captured_stderr() as err,
+                  unittest.mock.patch('pydoc.pager') as pager_mock,
+                  self.subTest(repr(request))):
+                helper = pydoc.Helper()
+                helper.help(request)
                 self.assertEqual('', err.getvalue())
-                self.assertEqual(expected_text, result)
-        finally:
-            pydoc.getpager = getpager_old
+                self.assertEqual('\n', output.getvalue())
+                pager_mock.assert_called_once()
+                result = clean_text(pager_mock.call_args.args[0])
+                self.assertEqual(result.splitlines()[0], expected_first_line)
+                self.assertEqual(pager_mock.call_args.args[1], f'Help on {what}')
+
+        run_pydoc_pager('%', 'EXPRESSIONS', 'Operator precedence')
+        run_pydoc_pager('True', 'bool object', 'Help on bool object:')
+        run_pydoc_pager(True, 'bool object', 'Help on bool object:')
+        run_pydoc_pager('assert', 'assert', 'The "assert" statement')
+        run_pydoc_pager('TYPES', 'TYPES', 'The standard type hierarchy')
+        run_pydoc_pager('pydoc.Helper.help', 'pydoc.Helper.help',
+                        'Help on function help in pydoc.Helper:')
+        run_pydoc_pager(pydoc.Helper.help, 'Helper.help',
+                        'Help on function help in module pydoc:')
+        run_pydoc_pager('str', 'str', 'Help on class str in module builtins:')
+        run_pydoc_pager(str, 'str', 'Help on class str in module builtins:')
+        run_pydoc_pager('str.upper', 'str.upper', 'Help on method_descriptor in str:')
+        run_pydoc_pager(str.upper, 'str.upper', 'Help on method_descriptor:')
+        run_pydoc_pager(str.__add__, 'str.__add__', 'Help on wrapper_descriptor:')
+        run_pydoc_pager(int.numerator, 'int.numerator',
+                        'Help on getset descriptor builtins.int.numerator:')
+        run_pydoc_pager(list[int], 'list',
+                        'Help on GenericAlias in module builtins:')
+        run_pydoc_pager('sys', 'sys', 'Help on built-in module sys:')
+        run_pydoc_pager(sys, 'sys', 'Help on built-in module sys:')
+
+    def test_showtopic(self):
+        with captured_stdout() as showtopic_io:
+            helper = pydoc.Helper()
+            helper.showtopic('with')
+        helptext = showtopic_io.getvalue()
+        self.assertIn('The "with" statement', helptext)
+
+    def test_fail_showtopic(self):
+        with captured_stdout() as showtopic_io:
+            helper = pydoc.Helper()
+            helper.showtopic('abd')
+            expected = "no documentation found for 'abd'"
+            self.assertEqual(expected, showtopic_io.getvalue().strip())
+
+    @unittest.mock.patch('pydoc.pager')
+    def test_fail_showtopic_output_redirect(self, pager_mock):
+        with StringIO() as buf:
+            helper = pydoc.Helper(output=buf)
+            helper.showtopic("abd")
+            expected = "no documentation found for 'abd'"
+            self.assertEqual(expected, buf.getvalue().strip())
+
+        pager_mock.assert_not_called()
+
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    @requires_docstrings
+    @unittest.mock.patch('pydoc.pager')
+    def test_showtopic_output_redirect(self, pager_mock):
+        # issue 940286, if output is set in Helper, then all output from
+        # Helper.showtopic should be redirected
+        self.maxDiff = None
+
+        with captured_stdout() as output, captured_stderr() as err:
+            buf = StringIO()
+            helper = pydoc.Helper(output=buf)
+            helper.showtopic('with')
+            result = buf.getvalue().strip()
+            self.assertEqual('', output.getvalue())
+            self.assertEqual('', err.getvalue())
+            self.assertIn('The "with" statement', result)
+
+        pager_mock.assert_not_called()
 
     def test_lambda_with_return_annotation(self):
         func = lambda a, b, c: 1
         func.__annotations__ = {"return": int}
-        with captured_output('stdout') as help_io:
+        with captured_stdout() as help_io:
             pydoc.help(func)
         helptext = help_io.getvalue()
         self.assertIn("lambda (a, b, c) -> int", helptext)
@@ -704,7 +837,7 @@ def test_lambda_with_return_annotation(self):
     def test_lambda_without_return_annotation(self):
         func = lambda a, b, c: 1
         func.__annotations__ = {"a": int, "b": int, "c": int}
-        with captured_output('stdout') as help_io:
+        with captured_stdout() as help_io:
             pydoc.help(func)
         helptext = help_io.getvalue()
         self.assertIn("lambda (a: int, b: int, c: int)", helptext)
@@ -712,7 +845,7 @@ def test_lambda_without_return_annotation(self):
     def test_lambda_with_return_and_params_annotation(self):
         func = lambda a, b, c: 1
         func.__annotations__ = {"a": int, "b": int, "c": int, "return": int}
-        with captured_output('stdout') as help_io:
+        with captured_stdout() as help_io:
             pydoc.help(func)
         helptext = help_io.getvalue()
         self.assertIn("lambda (a: int, b: int, c: int) -> int", helptext)
@@ -747,6 +880,82 @@ def test_synopsis(self):
             synopsis = pydoc.synopsis(TESTFN, {})
             self.assertEqual(synopsis, 'line 1: h\xe9')
 
+    def test_source_synopsis(self):
+        def check(source, expected, encoding=None):
+            if isinstance(source, str):
+                source_file = StringIO(source)
+            else:
+                source_file = io.TextIOWrapper(io.BytesIO(source), encoding=encoding)
+            with source_file:
+                result = pydoc.source_synopsis(source_file)
+                self.assertEqual(result, expected)
+
+        check('"""Single line docstring."""',
+              'Single line docstring.')
+        check('"""First line of docstring.\nSecond line.\nThird line."""',
+              'First line of docstring.')
+        check('"""First line of docstring.\\nSecond line.\\nThird line."""',
+              'First line of docstring.')
+        check('"""  Whitespace around docstring.  """',
+              'Whitespace around docstring.')
+        check('import sys\n"""No docstring"""',
+              None)
+        check('  \n"""Docstring after empty line."""',
+              'Docstring after empty line.')
+        check('# Comment\n"""Docstring after comment."""',
+              'Docstring after comment.')
+        check('  # Indented comment\n"""Docstring after comment."""',
+              'Docstring after comment.')
+        check('""""""', # Empty docstring
+              '')
+        check('', # Empty file
+              None)
+        check('"""Embedded\0null byte"""',
+              None)
+        check('"""Embedded null byte"""\0',
+              None)
+        check('"""Café and résumé."""',
+              'Café and résumé.')
+        check("'''Triple single quotes'''",
+              'Triple single quotes')
+        check('"Single double quotes"',
+              'Single double quotes')
+        check("'Single single quotes'",
+              'Single single quotes')
+        check('"""split\\\nline"""',
+              'splitline')
+        check('"""Unrecognized escape \\sequence"""',
+              'Unrecognized escape \\sequence')
+        check('"""Invalid escape seq\\uence"""',
+              None)
+        check('r"""Raw \\stri\\ng"""',
+              'Raw \\stri\\ng')
+        check('b"""Bytes literal"""',
+              None)
+        check('f"""f-string"""',
+              None)
+        check('"""Concatenated""" \\\n"string" \'literals\'',
+              'Concatenatedstringliterals')
+        check('"""String""" + """expression"""',
+              None)
+        check('("""In parentheses""")',
+              'In parentheses')
+        check('("""Multiple lines """\n"""in parentheses""")',
+              'Multiple lines in parentheses')
+        check('()', # tuple
+              None)
+        check(b'# coding: iso-8859-15\n"""\xa4uro sign"""',
+              '€uro sign', encoding='iso-8859-15')
+        check(b'"""\xa4"""', # Decoding error
+              None, encoding='utf-8')
+
+        with tempfile.NamedTemporaryFile(mode='w+', encoding='utf-8') as temp_file:
+            temp_file.write('"""Real file test."""\n')
+            temp_file.flush()
+            temp_file.seek(0)
+            result = pydoc.source_synopsis(temp_file)
+            self.assertEqual(result, "Real file test.")
+
     @requires_docstrings
     def test_synopsis_sourceless(self):
         os = import_helper.import_fresh_module('os')
@@ -1154,12 +1363,15 @@ def test_modules_search_builtin(self):
         self.assertTrue(result.startswith(expected))
 
     def test_importfile(self):
-        loaded_pydoc = pydoc.importfile(pydoc.__file__)
+        try:
+            loaded_pydoc = pydoc.importfile(pydoc.__file__)
 
-        self.assertIsNot(loaded_pydoc, pydoc)
-        self.assertEqual(loaded_pydoc.__name__, 'pydoc')
-        self.assertEqual(loaded_pydoc.__file__, pydoc.__file__)
-        self.assertEqual(loaded_pydoc.__spec__, pydoc.__spec__)
+            self.assertIsNot(loaded_pydoc, pydoc)
+            self.assertEqual(loaded_pydoc.__name__, 'pydoc')
+            self.assertEqual(loaded_pydoc.__file__, pydoc.__file__)
+            self.assertEqual(loaded_pydoc.__spec__, pydoc.__spec__)
+        finally:
+            sys.modules['pydoc'] = pydoc
 
 
 class Rect:
@@ -1174,6 +1386,8 @@ class Square(Rect):
 
 
 class TestDescriptions(unittest.TestCase):
+    def tearDown(self):
+        self.assertIs(sys.modules['pydoc'], pydoc)
 
     def test_module(self):
         # Check that pydocfodder module can be described
@@ -1663,6 +1877,8 @@ def a_fn_with_https_link():
 
 
 class PydocFodderTest(unittest.TestCase):
+    def tearDown(self):
+        self.assertIs(sys.modules['pydoc'], pydoc)
 
     def getsection(self, text, beginline, endline):
         lines = text.splitlines()
@@ -1802,6 +2018,8 @@ def test_html_doc_routines_in_module(self):
 )
 class PydocServerTest(unittest.TestCase):
     """Tests for pydoc._start_server"""
+    def tearDown(self):
+        self.assertIs(sys.modules['pydoc'], pydoc)
 
     def test_server(self):
         # Minimal test that starts the server, checks that it works, then stops
@@ -1864,9 +2082,14 @@ def test_url_requests(self):
             ("foobar", "Pydoc: Error - foobar"),
             ]
 
-        with self.restrict_walk_packages():
-            for url, title in requests:
-                self.call_url_handler(url, title)
+        self.assertIs(sys.modules['pydoc'], pydoc)
+        try:
+            with self.restrict_walk_packages():
+                for url, title in requests:
+                    self.call_url_handler(url, title)
+        finally:
+            # Some requests reload the module and change sys.modules.
+            sys.modules['pydoc'] = pydoc
 
 
 class TestHelper(unittest.TestCase):
@@ -1876,6 +2099,9 @@ def test_keywords(self):
 
 
 class PydocWithMetaClasses(unittest.TestCase):
+    def tearDown(self):
+        self.assertIs(sys.modules['pydoc'], pydoc)
+
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'trace function introduces __locals__ unexpectedly')
     @requires_docstrings
diff --git a/Lib/test/test_pyrepl.py b/Lib/test/test_pyrepl.py
deleted file mode 100644
index c8990b699b214c..00000000000000
--- a/Lib/test/test_pyrepl.py
+++ /dev/null
@@ -1,1006 +0,0 @@
-import itertools
-import os
-import rlcompleter
-import sys
-import tempfile
-import unittest
-from code import InteractiveConsole
-from functools import partial
-from unittest import TestCase
-from unittest.mock import MagicMock, patch
-
-from test.support import requires
-from test.support.import_helper import import_module
-
-# Optionally test pyrepl.  This currently requires that the
-# 'curses' resource be given on the regrtest command line using the -u
-# option.  Additionally, we need to attempt to import curses and readline.
-requires("curses")
-curses = import_module("curses")
-readline = import_module("readline")
-
-from _pyrepl.console import Console, Event
-from _pyrepl.readline import ReadlineAlikeReader, ReadlineConfig
-from _pyrepl.simple_interact import _strip_final_indent
-from _pyrepl.unix_eventqueue import EventQueue
-from _pyrepl.simple_interact import InteractiveColoredConsole
-
-
-def more_lines(unicodetext, namespace=None):
-    if namespace is None:
-        namespace = {}
-    src = _strip_final_indent(unicodetext)
-    console = InteractiveConsole(namespace, filename="<stdin>")
-    try:
-        code = console.compile(src, "<stdin>", "single")
-    except (OverflowError, SyntaxError, ValueError):
-        return False
-    else:
-        return code is None
-
-
-def multiline_input(reader, namespace=None):
-    saved = reader.more_lines
-    try:
-        reader.more_lines = partial(more_lines, namespace=namespace)
-        reader.ps1 = reader.ps2 = ">>>"
-        reader.ps3 = reader.ps4 = "..."
-        return reader.readline()
-    finally:
-        reader.more_lines = saved
-        reader.paste_mode = False
-
-
-def code_to_events(code):
-    for c in code:
-        yield Event(evt="key", data=c, raw=bytearray(c.encode("utf-8")))
-
-
-def prepare_mock_console(events, **kwargs):
-    console = MagicMock()
-    console.get_event.side_effect = events
-    console.height = 100
-    console.width = 80
-    for key, val in kwargs.items():
-        setattr(console, key, val)
-    return console
-
-
-def prepare_fake_console(**kwargs):
-    console = FakeConsole()
-    for key, val in kwargs.items():
-        setattr(console, key, val)
-    return console
-
-
-def prepare_reader(console, **kwargs):
-    config = ReadlineConfig(readline_completer=None)
-    reader = ReadlineAlikeReader(console=console, config=config)
-    reader.more_lines = partial(more_lines, namespace=None)
-    reader.paste_mode = True  # Avoid extra indents
-
-    def get_prompt(lineno, cursor_on_line) -> str:
-        return ""
-
-    reader.get_prompt = get_prompt  # Remove prompt for easier calculations of (x, y)
-
-    for key, val in kwargs.items():
-        setattr(reader, key, val)
-
-    return reader
-
-
-def handle_all_events(
-    events, prepare_console=prepare_mock_console, prepare_reader=prepare_reader
-):
-    console = prepare_console(events)
-    reader = prepare_reader(console)
-    try:
-        while True:
-            reader.handle1()
-    except StopIteration:
-        pass
-    return reader, console
-
-
-handle_events_narrow_console = partial(
-    handle_all_events, prepare_console=partial(prepare_mock_console, width=10)
-)
-
-
-class FakeConsole(Console):
-    def __init__(self, events, encoding="utf-8"):
-        self.events = iter(events)
-        self.encoding = encoding
-        self.screen = []
-        self.height = 100
-        self.width = 80
-
-    def get_event(self, block: bool = True) -> Event | None:
-        return next(self.events)
-
-    def getpending(self) -> Event:
-        return self.get_event(block=False)
-
-    def getheightwidth(self) -> tuple[int, int]:
-        return self.height, self.width
-
-    def refresh(self, screen: list[str], xy: tuple[int, int]) -> None:
-        pass
-
-    def prepare(self) -> None:
-        pass
-
-    def restore(self) -> None:
-        pass
-
-    def move_cursor(self, x: int, y: int) -> None:
-        pass
-
-    def set_cursor_vis(self, visible: bool) -> None:
-        pass
-
-    def push_char(self, char: int | bytes) -> None:
-        pass
-
-    def beep(self) -> None:
-        pass
-
-    def clear(self) -> None:
-        pass
-
-    def finish(self) -> None:
-        pass
-
-    def flushoutput(self) -> None:
-        pass
-
-    def forgetinput(self) -> None:
-        pass
-
-    def wait(self) -> None:
-        pass
-
-    def repaint(self) -> None:
-        pass
-
-
-class TestCursorPosition(TestCase):
-    def test_up_arrow_simple(self):
-        # fmt: off
-        code = (
-            'def f():\n'
-            '  ...\n'
-        )
-        # fmt: on
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-            ],
-        )
-
-        reader, console = handle_all_events(events)
-        self.assertEqual(reader.cxy, (0, 1))
-        console.move_cursor.assert_called_once_with(0, 1)
-
-    def test_down_arrow_end_of_input(self):
-        # fmt: off
-        code = (
-            'def f():\n'
-            '  ...\n'
-        )
-        # fmt: on
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-            ],
-        )
-
-        reader, console = handle_all_events(events)
-        self.assertEqual(reader.cxy, (0, 2))
-        console.move_cursor.assert_called_once_with(0, 2)
-
-    def test_left_arrow_simple(self):
-        events = itertools.chain(
-            code_to_events("11+11"),
-            [
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-            ],
-        )
-
-        reader, console = handle_all_events(events)
-        self.assertEqual(reader.cxy, (4, 0))
-        console.move_cursor.assert_called_once_with(4, 0)
-
-    def test_right_arrow_end_of_line(self):
-        events = itertools.chain(
-            code_to_events("11+11"),
-            [
-                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
-            ],
-        )
-
-        reader, console = handle_all_events(events)
-        self.assertEqual(reader.cxy, (5, 0))
-        console.move_cursor.assert_called_once_with(5, 0)
-
-    def test_cursor_position_simple_character(self):
-        events = itertools.chain(code_to_events("k"))
-
-        reader, _ = handle_all_events(events)
-        self.assertEqual(reader.pos, 1)
-
-        # 1 for simple character
-        self.assertEqual(reader.cxy, (1, 0))
-
-    def test_cursor_position_double_width_character(self):
-        events = itertools.chain(code_to_events("樂"))
-
-        reader, _ = handle_all_events(events)
-        self.assertEqual(reader.pos, 1)
-
-        # 2 for wide character
-        self.assertEqual(reader.cxy, (2, 0))
-
-    def test_cursor_position_double_width_character_move_left(self):
-        events = itertools.chain(
-            code_to_events("樂"),
-            [
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-        self.assertEqual(reader.pos, 0)
-        self.assertEqual(reader.cxy, (0, 0))
-
-    def test_cursor_position_double_width_character_move_left_right(self):
-        events = itertools.chain(
-            code_to_events("樂"),
-            [
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-        self.assertEqual(reader.pos, 1)
-
-        # 2 for wide character
-        self.assertEqual(reader.cxy, (2, 0))
-
-    def test_cursor_position_double_width_characters_move_up(self):
-        for_loop = "for _ in _:"
-
-        # fmt: off
-        code = (
-           f"{for_loop}\n"
-            "  ' 可口可乐; 可口可樂'"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-
-        # cursor at end of first line
-        self.assertEqual(reader.pos, len(for_loop))
-        self.assertEqual(reader.cxy, (len(for_loop), 0))
-
-    def test_cursor_position_double_width_characters_move_up_down(self):
-        for_loop = "for _ in _:"
-
-        # fmt: off
-        code = (
-           f"{for_loop}\n"
-            "  ' 可口可乐; 可口可樂'"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-
-        # cursor here (showing 2nd line only):
-        # <  ' 可口可乐; 可口可樂'>
-        #              ^
-        self.assertEqual(reader.pos, 19)
-        self.assertEqual(reader.cxy, (10, 1))
-
-    def test_cursor_position_multiple_double_width_characters_move_left(self):
-        events = itertools.chain(
-            code_to_events("' 可口可乐; 可口可樂'"),
-            [
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-        self.assertEqual(reader.pos, 10)
-
-        # 1 for quote, 1 for space, 2 per wide character,
-        # 1 for semicolon, 1 for space, 2 per wide character
-        self.assertEqual(reader.cxy, (16, 0))
-
-    def test_cursor_position_move_up_to_eol(self):
-        first_line = "for _ in _:"
-        second_line = "  hello"
-
-        # fmt: off
-        code = (
-            f"{first_line}\n"
-            f"{second_line}\n"
-             "  h\n"
-             "  hel"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-
-        # Cursor should be at end of line 1, even though line 2 is shorter
-        # for _ in _:
-        #   hello
-        #   h
-        #   hel
-        self.assertEqual(
-            reader.pos, len(first_line) + len(second_line) + 1
-        )  # +1 for newline
-        self.assertEqual(reader.cxy, (len(second_line), 1))
-
-    def test_cursor_position_move_down_to_eol(self):
-        last_line = "  hel"
-
-        # fmt: off
-        code = (
-            "for _ in _:\n"
-            "  hello\n"
-            "  h\n"
-           f"{last_line}"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-            ],
-        )
-
-        reader, _ = handle_all_events(events)
-
-        # Cursor should be at end of line 3, even though line 2 is shorter
-        # for _ in _:
-        #   hello
-        #   h
-        #   hel
-        self.assertEqual(reader.pos, len(code))
-        self.assertEqual(reader.cxy, (len(last_line), 3))
-
-    def test_cursor_position_multiple_mixed_lines_move_up(self):
-        # fmt: off
-        code = (
-            "def foo():\n"
-            "  x = '可口可乐; 可口可樂'\n"
-            "  y = 'abckdfjskldfjslkdjf'"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            13 * [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
-            [Event(evt="key", data="up", raw=bytearray(b"\x1bOA"))],
-        )
-
-        reader, _ = handle_all_events(events)
-
-        # By moving left, we're before the s:
-        # y = 'abckdfjskldfjslkdjf'
-        #             ^
-        # And we should move before the semi-colon despite the different offset
-        # x = '可口可乐; 可口可樂'
-        #            ^
-        self.assertEqual(reader.pos, 22)
-        self.assertEqual(reader.cxy, (15, 1))
-
-    def test_cursor_position_after_wrap_and_move_up(self):
-        # fmt: off
-        code = (
-            "def foo():\n"
-            "  hello"
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            code_to_events(code),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-            ],
-        )
-        reader, _ = handle_events_narrow_console(events)
-
-        # The code looks like this:
-        # def foo()\
-        # :
-        #   hello
-        # After moving up we should be after the colon in line 2
-        self.assertEqual(reader.pos, 10)
-        self.assertEqual(reader.cxy, (1, 1))
-
-
-class TestPyReplOutput(TestCase):
-    def prepare_reader(self, events):
-        console = FakeConsole(events)
-        config = ReadlineConfig(readline_completer=None)
-        reader = ReadlineAlikeReader(console=console, config=config)
-        return reader
-
-    def test_basic(self):
-        reader = self.prepare_reader(code_to_events("1+1\n"))
-
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-
-    def test_multiline_edit(self):
-        events = itertools.chain(
-            code_to_events("def f():\n  ...\n\n"),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
-                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
-                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
-                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
-                Event(evt="key", data="g", raw=bytearray(b"g")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-            ],
-        )
-        reader = self.prepare_reader(events)
-
-        output = multiline_input(reader)
-        self.assertEqual(output, "def f():\n  ...\n  ")
-        output = multiline_input(reader)
-        self.assertEqual(output, "def g():\n  ...\n  ")
-
-    def test_history_navigation_with_up_arrow(self):
-        events = itertools.chain(
-            code_to_events("1+1\n2+2\n"),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-            ],
-        )
-
-        reader = self.prepare_reader(events)
-
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-        output = multiline_input(reader)
-        self.assertEqual(output, "2+2")
-        output = multiline_input(reader)
-        self.assertEqual(output, "2+2")
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-
-    def test_history_navigation_with_down_arrow(self):
-        events = itertools.chain(
-            code_to_events("1+1\n2+2\n"),
-            [
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
-            ],
-        )
-
-        reader = self.prepare_reader(events)
-
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-
-    def test_history_search(self):
-        events = itertools.chain(
-            code_to_events("1+1\n2+2\n3+3\n"),
-            [
-                Event(evt="key", data="\x12", raw=bytearray(b"\x12")),
-                Event(evt="key", data="1", raw=bytearray(b"1")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-                Event(evt="key", data="\n", raw=bytearray(b"\n")),
-            ],
-        )
-
-        reader = self.prepare_reader(events)
-
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-        output = multiline_input(reader)
-        self.assertEqual(output, "2+2")
-        output = multiline_input(reader)
-        self.assertEqual(output, "3+3")
-        output = multiline_input(reader)
-        self.assertEqual(output, "1+1")
-
-    def test_control_character(self):
-        events = code_to_events("c\x1d\n")
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, "c\x1d")
-
-
-class TestPyReplCompleter(TestCase):
-    def prepare_reader(self, events, namespace):
-        console = FakeConsole(events)
-        config = ReadlineConfig()
-        config.readline_completer = rlcompleter.Completer(namespace).complete
-        reader = ReadlineAlikeReader(console=console, config=config)
-        return reader
-
-    def test_simple_completion(self):
-        events = code_to_events("os.geten\t\n")
-
-        namespace = {"os": os}
-        reader = self.prepare_reader(events, namespace)
-
-        output = multiline_input(reader, namespace)
-        self.assertEqual(output, "os.getenv")
-
-    def test_completion_with_many_options(self):
-        # Test with something that initially displays many options
-        # and then complete from one of them. The first time tab is
-        # pressed, the options are displayed (which corresponds to
-        # when the repl shows [ not unique ]) and the second completes
-        # from one of them.
-        events = code_to_events("os.\t\tO_AP\t\n")
-
-        namespace = {"os": os}
-        reader = self.prepare_reader(events, namespace)
-
-        output = multiline_input(reader, namespace)
-        self.assertEqual(output, "os.O_APPEND")
-
-    def test_empty_namespace_completion(self):
-        events = code_to_events("os.geten\t\n")
-        namespace = {}
-        reader = self.prepare_reader(events, namespace)
-
-        output = multiline_input(reader, namespace)
-        self.assertEqual(output, "os.geten")
-
-    def test_global_namespace_completion(self):
-        events = code_to_events("py\t\n")
-        namespace = {"python": None}
-        reader = self.prepare_reader(events, namespace)
-        output = multiline_input(reader, namespace)
-        self.assertEqual(output, "python")
-
-
-@patch("_pyrepl.curses.tigetstr", lambda x: b"")
-class TestUnivEventQueue(TestCase):
-    def setUp(self):
-        self.file = tempfile.TemporaryFile()
-
-    def tearDown(self) -> None:
-        self.file.close()
-
-    def test_get(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        event = Event("key", "a", b"a")
-        eq.insert(event)
-        self.assertEqual(eq.get(), event)
-
-    def test_empty(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        self.assertTrue(eq.empty())
-        eq.insert(Event("key", "a", b"a"))
-        self.assertFalse(eq.empty())
-
-    def test_flush_buf(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.buf.extend(b"test")
-        self.assertEqual(eq.flush_buf(), b"test")
-        self.assertEqual(eq.buf, bytearray())
-
-    def test_insert(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        event = Event("key", "a", b"a")
-        eq.insert(event)
-        self.assertEqual(eq.events[0], event)
-
-    @patch("_pyrepl.unix_eventqueue.keymap")
-    def test_push_with_key_in_keymap(self, mock_keymap):
-        mock_keymap.compile_keymap.return_value = {"a": "b"}
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {b"a": "b"}
-        eq.push("a")
-        mock_keymap.compile_keymap.assert_called()
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "b")
-
-    @patch("_pyrepl.unix_eventqueue.keymap")
-    def test_push_without_key_in_keymap(self, mock_keymap):
-        mock_keymap.compile_keymap.return_value = {"a": "b"}
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {b"c": "d"}
-        eq.push("a")
-        mock_keymap.compile_keymap.assert_called()
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "a")
-
-    @patch("_pyrepl.unix_eventqueue.keymap")
-    def test_push_with_keymap_in_keymap(self, mock_keymap):
-        mock_keymap.compile_keymap.return_value = {"a": "b"}
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {b"a": {b"b": "c"}}
-        eq.push("a")
-        mock_keymap.compile_keymap.assert_called()
-        self.assertTrue(eq.empty())
-        eq.push("b")
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "c")
-        eq.push("d")
-        self.assertEqual(eq.events[1].evt, "key")
-        self.assertEqual(eq.events[1].data, "d")
-
-    @patch("_pyrepl.unix_eventqueue.keymap")
-    def test_push_with_keymap_in_keymap_and_escape(self, mock_keymap):
-        mock_keymap.compile_keymap.return_value = {"a": "b"}
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {b"a": {b"b": "c"}}
-        eq.push("a")
-        mock_keymap.compile_keymap.assert_called()
-        self.assertTrue(eq.empty())
-        eq.flush_buf()
-        eq.push("\033")
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "\033")
-        eq.push("b")
-        self.assertEqual(eq.events[1].evt, "key")
-        self.assertEqual(eq.events[1].data, "b")
-
-    def test_push_special_key(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {}
-        eq.push("\x1b")
-        eq.push("[")
-        eq.push("A")
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "\x1b")
-
-    def test_push_unrecognized_escape_sequence(self):
-        eq = EventQueue(self.file.fileno(), "utf-8")
-        eq.keymap = {}
-        eq.push("\x1b")
-        eq.push("[")
-        eq.push("Z")
-        self.assertEqual(len(eq.events), 3)
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "\x1b")
-        self.assertEqual(eq.events[1].evt, "key")
-        self.assertEqual(eq.events[1].data, "[")
-        self.assertEqual(eq.events[2].evt, "key")
-        self.assertEqual(eq.events[2].data, "Z")
-
-
-class TestPasteEvent(TestCase):
-    def prepare_reader(self, events):
-        console = FakeConsole(events)
-        config = ReadlineConfig(readline_completer=None)
-        reader = ReadlineAlikeReader(console=console, config=config)
-        return reader
-
-    def test_paste(self):
-        # fmt: off
-        code = (
-            'def a():\n'
-            '  for x in range(10):\n'
-            '    if x%2:\n'
-            '      print(x)\n'
-            '    else:\n'
-            '      pass\n'
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            [
-                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
-            ],
-            code_to_events(code),
-            [
-                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
-            ],
-            code_to_events("\n"),
-        )
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, code)
-
-    def test_paste_mid_newlines(self):
-        # fmt: off
-        code = (
-            'def f():\n'
-            '  x = y\n'
-            '  \n'
-            '  y = z\n'
-        )
-        # fmt: on
-
-        events = itertools.chain(
-            [
-                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
-            ],
-            code_to_events(code),
-            [
-                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
-            ],
-            code_to_events("\n"),
-        )
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, code)
-
-    def test_paste_mid_newlines_not_in_paste_mode(self):
-        # fmt: off
-        code = (
-            'def f():\n'
-            '  x = y\n'
-            '  \n'
-            '  y = z\n\n'
-        )
-
-        expected = (
-            'def f():\n'
-            '  x = y\n'
-            '    '
-        )
-        # fmt: on
-
-        events = code_to_events(code)
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, expected)
-
-    def test_paste_not_in_paste_mode(self):
-        # fmt: off
-        input_code = (
-            'def a():\n'
-            '  for x in range(10):\n'
-            '    if x%2:\n'
-            '      print(x)\n'
-            '    else:\n'
-            '      pass\n\n'
-        )
-
-        output_code = (
-            'def a():\n'
-            '  for x in range(10):\n'
-            '      if x%2:\n'
-            '            print(x)\n'
-            '                else:'
-        )
-        # fmt: on
-
-        events = code_to_events(input_code)
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, output_code)
-
-    def test_bracketed_paste(self):
-        """Test that bracketed paste using \x1b[200~ and \x1b[201~ works."""
-        # fmt: off
-        input_code = (
-            'def a():\n'
-            '  for x in range(10):\n'
-            '\n'
-            '    if x%2:\n'
-            '      print(x)\n'
-            '\n'
-            '    else:\n'
-            '      pass\n'
-        )
-
-        output_code = (
-            'def a():\n'
-            '  for x in range(10):\n'
-            '\n'
-            '    if x%2:\n'
-            '      print(x)\n'
-            '\n'
-            '    else:\n'
-            '      pass\n'
-        )
-        # fmt: on
-
-        paste_start = "\x1b[200~"
-        paste_end = "\x1b[201~"
-
-        events = itertools.chain(
-            code_to_events(paste_start),
-            code_to_events(input_code),
-            code_to_events(paste_end),
-            code_to_events("\n"),
-        )
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, output_code)
-
-    def test_bracketed_paste_single_line(self):
-        input_code = "oneline"
-
-        paste_start = "\x1b[200~"
-        paste_end = "\x1b[201~"
-
-        events = itertools.chain(
-            code_to_events(paste_start),
-            code_to_events(input_code),
-            code_to_events(paste_end),
-            code_to_events("\n"),
-        )
-        reader = self.prepare_reader(events)
-        output = multiline_input(reader)
-        self.assertEqual(output, input_code)
-
-
-class TestReader(TestCase):
-    def assert_screen_equals(self, reader, expected):
-        actual = reader.calc_screen()
-        expected = expected.split("\n")
-        self.assertListEqual(actual, expected)
-
-    def test_calc_screen_wrap_simple(self):
-        events = code_to_events(10 * "a")
-        reader, _ = handle_events_narrow_console(events)
-        self.assert_screen_equals(reader, f"{9*"a"}\\\na")
-
-    def test_calc_screen_wrap_wide_characters(self):
-        events = code_to_events(8 * "a" + "樂")
-        reader, _ = handle_events_narrow_console(events)
-        self.assert_screen_equals(reader, f"{8*"a"}\\\n樂")
-
-    def test_calc_screen_wrap_three_lines(self):
-        events = code_to_events(20 * "a")
-        reader, _ = handle_events_narrow_console(events)
-        self.assert_screen_equals(reader, f"{9*"a"}\\\n{9*"a"}\\\naa")
-
-    def test_calc_screen_wrap_three_lines_mixed_character(self):
-        # fmt: off
-        code = (
-            "def f():\n"
-           f"  {8*"a"}\n"
-           f"  {5*"樂"}"
-        )
-        # fmt: on
-
-        events = code_to_events(code)
-        reader, _ = handle_events_narrow_console(events)
-
-        # fmt: off
-        self.assert_screen_equals(reader, (
-            "def f():\n"
-           f"  {7*"a"}\\\n"
-            "a\n"
-           f"  {3*"樂"}\\\n"
-            "樂樂"
-        ))
-        # fmt: on
-
-    def test_calc_screen_backspace(self):
-        events = itertools.chain(
-            code_to_events("aaa"),
-            [
-                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
-            ],
-        )
-        reader, _ = handle_all_events(events)
-        self.assert_screen_equals(reader, "aa")
-
-    def test_calc_screen_wrap_removes_after_backspace(self):
-        events = itertools.chain(
-            code_to_events(10 * "a"),
-            [
-                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
-            ],
-        )
-        reader, _ = handle_events_narrow_console(events)
-        self.assert_screen_equals(reader, 9 * "a")
-
-    def test_calc_screen_backspace_in_second_line_after_wrap(self):
-        events = itertools.chain(
-            code_to_events(11 * "a"),
-            [
-                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
-            ],
-        )
-        reader, _ = handle_events_narrow_console(events)
-        self.assert_screen_equals(reader, f"{9*"a"}\\\na")
-
-    def test_setpos_for_xy_simple(self):
-        events = code_to_events("11+11")
-        reader, _ = handle_all_events(events)
-        reader.setpos_from_xy(0, 0)
-        self.assertEqual(reader.pos, 0)
-
-    def test_setpos_from_xy_multiple_lines(self):
-        # fmt: off
-        code = (
-            "def foo():\n"
-            "  return 1"
-        )
-        # fmt: on
-
-        events = code_to_events(code)
-        reader, _ = handle_all_events(events)
-        reader.setpos_from_xy(2, 1)
-        self.assertEqual(reader.pos, 13)
-
-    def test_setpos_from_xy_after_wrap(self):
-        # fmt: off
-        code = (
-            "def foo():\n"
-            "  hello"
-        )
-        # fmt: on
-
-        events = code_to_events(code)
-        reader, _ = handle_events_narrow_console(events)
-        reader.setpos_from_xy(2, 2)
-        self.assertEqual(reader.pos, 13)
-
-    def test_setpos_fromxy_in_wrapped_line(self):
-        # fmt: off
-        code = (
-            "def foo():\n"
-            "  hello"
-        )
-        # fmt: on
-
-        events = code_to_events(code)
-        reader, _ = handle_events_narrow_console(events)
-        reader.setpos_from_xy(0, 1)
-        self.assertEqual(reader.pos, 9)
-
-    def test_up_arrow_after_ctrl_r(self):
-        events = iter([
-            Event(evt='key', data='\x12', raw=bytearray(b'\x12')),
-            Event(evt='key', data='up', raw=bytearray(b'\x1bOA')),
-        ])
-
-        reader, _ = handle_all_events(events)
-        self.assert_screen_equals(reader, "")
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/Lib/test/test_pyrepl/__init__.py b/Lib/test/test_pyrepl/__init__.py
new file mode 100644
index 00000000000000..8359d9844623c2
--- /dev/null
+++ b/Lib/test/test_pyrepl/__init__.py
@@ -0,0 +1,15 @@
+import os
+import sys
+from test.support import requires, load_package_tests
+from test.support.import_helper import import_module
+
+if sys.platform != "win32":
+    # On non-Windows platforms, testing pyrepl currently requires that the
+    # 'curses' resource be given on the regrtest command line using the -u
+    # option.  Additionally, we need to attempt to import curses and readline.
+    requires("curses")
+    curses = import_module("curses")
+
+
+def load_tests(*args):
+    return load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_pyrepl/__main__.py b/Lib/test/test_pyrepl/__main__.py
new file mode 100644
index 00000000000000..cbe9e01d0df820
--- /dev/null
+++ b/Lib/test/test_pyrepl/__main__.py
@@ -0,0 +1,4 @@
+import unittest
+from test.test_pyrepl import load_tests
+
+unittest.main()
diff --git a/Lib/test/test_pyrepl/support.py b/Lib/test/test_pyrepl/support.py
new file mode 100644
index 00000000000000..45e3bf758f17de
--- /dev/null
+++ b/Lib/test/test_pyrepl/support.py
@@ -0,0 +1,158 @@
+import os
+from code import InteractiveConsole
+from functools import partial
+from typing import Iterable
+from unittest.mock import MagicMock
+
+from _pyrepl.console import Console, Event
+from _pyrepl.readline import ReadlineAlikeReader, ReadlineConfig
+from _pyrepl.simple_interact import _strip_final_indent
+
+
+def multiline_input(reader: ReadlineAlikeReader, namespace: dict | None = None):
+    saved = reader.more_lines
+    try:
+        reader.more_lines = partial(more_lines, namespace=namespace)
+        reader.ps1 = reader.ps2 = ">>>"
+        reader.ps3 = reader.ps4 = "..."
+        return reader.readline()
+    finally:
+        reader.more_lines = saved
+        reader.paste_mode = False
+
+
+def more_lines(text: str, namespace: dict | None = None):
+    if namespace is None:
+        namespace = {}
+    src = _strip_final_indent(text)
+    console = InteractiveConsole(namespace, filename="<stdin>")
+    try:
+        code = console.compile(src, "<stdin>", "single")
+    except (OverflowError, SyntaxError, ValueError):
+        return False
+    else:
+        return code is None
+
+
+def code_to_events(code: str):
+    for c in code:
+        yield Event(evt="key", data=c, raw=bytearray(c.encode("utf-8")))
+
+
+def clean_screen(screen: Iterable[str]):
+    """Cleans color and console characters out of a screen output.
+
+    This is useful for screen testing, it increases the test readability since
+    it strips out all the unreadable side of the screen.
+    """
+    output = []
+    for line in screen:
+        if line.startswith(">>>") or line.startswith("..."):
+            line = line[3:]
+        output.append(line)
+    return "\n".join(output).strip()
+
+
+def prepare_reader(console: Console, **kwargs):
+    config = ReadlineConfig(readline_completer=kwargs.pop("readline_completer", None))
+    reader = ReadlineAlikeReader(console=console, config=config)
+    reader.more_lines = partial(more_lines, namespace=None)
+    reader.paste_mode = True  # Avoid extra indents
+
+    def get_prompt(lineno, cursor_on_line) -> str:
+        return ""
+
+    reader.get_prompt = get_prompt  # Remove prompt for easier calculations of (x, y)
+
+    for key, val in kwargs.items():
+        setattr(reader, key, val)
+
+    return reader
+
+
+def prepare_console(events: Iterable[Event], **kwargs) -> MagicMock | Console:
+    console = MagicMock()
+    console.get_event.side_effect = events
+    console.height = 100
+    console.width = 80
+    for key, val in kwargs.items():
+        setattr(console, key, val)
+    return console
+
+
+def handle_all_events(
+    events, prepare_console=prepare_console, prepare_reader=prepare_reader
+):
+    console = prepare_console(events)
+    reader = prepare_reader(console)
+    try:
+        while True:
+            reader.handle1()
+    except StopIteration:
+        pass
+    except KeyboardInterrupt:
+        pass
+    return reader, console
+
+
+handle_events_narrow_console = partial(
+    handle_all_events,
+    prepare_console=partial(prepare_console, width=10),
+)
+
+
+class FakeConsole(Console):
+    def __init__(self, events, encoding="utf-8") -> None:
+        self.events = iter(events)
+        self.encoding = encoding
+        self.screen = []
+        self.height = 100
+        self.width = 80
+
+    def get_event(self, block: bool = True) -> Event | None:
+        return next(self.events)
+
+    def getpending(self) -> Event:
+        return self.get_event(block=False)
+
+    def getheightwidth(self) -> tuple[int, int]:
+        return self.height, self.width
+
+    def refresh(self, screen: list[str], xy: tuple[int, int]) -> None:
+        pass
+
+    def prepare(self) -> None:
+        pass
+
+    def restore(self) -> None:
+        pass
+
+    def move_cursor(self, x: int, y: int) -> None:
+        pass
+
+    def set_cursor_vis(self, visible: bool) -> None:
+        pass
+
+    def push_char(self, char: int | bytes) -> None:
+        pass
+
+    def beep(self) -> None:
+        pass
+
+    def clear(self) -> None:
+        pass
+
+    def finish(self) -> None:
+        pass
+
+    def flushoutput(self) -> None:
+        pass
+
+    def forgetinput(self) -> None:
+        pass
+
+    def wait(self, timeout: float | None = None) -> bool:
+        return True
+
+    def repaint(self) -> None:
+        pass
diff --git a/Lib/test/test_pyrepl/test_input.py b/Lib/test/test_pyrepl/test_input.py
new file mode 100644
index 00000000000000..c78c876c2c4c2a
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_input.py
@@ -0,0 +1,102 @@
+import unittest
+
+from _pyrepl.console import Event
+from _pyrepl.input import KeymapTranslator
+
+
+class KeymapTranslatorTests(unittest.TestCase):
+    def test_push_single_key(self):
+        keymap = [("a", "command_a")]
+        translator = KeymapTranslator(keymap)
+        evt = Event("key", "a")
+        translator.push(evt)
+        result = translator.get()
+        self.assertEqual(result, ("command_a", ["a"]))
+
+    def test_push_multiple_keys(self):
+        keymap = [("ab", "command_ab")]
+        translator = KeymapTranslator(keymap)
+        evt1 = Event("key", "a")
+        evt2 = Event("key", "b")
+        translator.push(evt1)
+        translator.push(evt2)
+        result = translator.get()
+        self.assertEqual(result, ("command_ab", ["a", "b"]))
+
+    def test_push_invalid_key(self):
+        keymap = [("a", "command_a")]
+        translator = KeymapTranslator(keymap)
+        evt = Event("key", "b")
+        translator.push(evt)
+        result = translator.get()
+        self.assertEqual(result, (None, ["b"]))
+
+    def test_push_invalid_key_with_stack(self):
+        keymap = [("ab", "command_ab")]
+        translator = KeymapTranslator(keymap)
+        evt1 = Event("key", "a")
+        evt2 = Event("key", "c")
+        translator.push(evt1)
+        translator.push(evt2)
+        result = translator.get()
+        self.assertEqual(result, (None, ["a", "c"]))
+
+    def test_push_character_key(self):
+        keymap = [("a", "command_a")]
+        translator = KeymapTranslator(keymap)
+        evt = Event("key", "a")
+        translator.push(evt)
+        result = translator.get()
+        self.assertEqual(result, ("command_a", ["a"]))
+
+    def test_push_character_key_with_stack(self):
+        keymap = [("ab", "command_ab")]
+        translator = KeymapTranslator(keymap)
+        evt1 = Event("key", "a")
+        evt2 = Event("key", "b")
+        evt3 = Event("key", "c")
+        translator.push(evt1)
+        translator.push(evt2)
+        translator.push(evt3)
+        result = translator.get()
+        self.assertEqual(result, ("command_ab", ["a", "b"]))
+
+    def test_push_transition_key(self):
+        keymap = [("a", {"b": "command_ab"})]
+        translator = KeymapTranslator(keymap)
+        evt1 = Event("key", "a")
+        evt2 = Event("key", "b")
+        translator.push(evt1)
+        translator.push(evt2)
+        result = translator.get()
+        self.assertEqual(result, ("command_ab", ["a", "b"]))
+
+    def test_push_transition_key_interrupted(self):
+        keymap = [("a", {"b": "command_ab"})]
+        translator = KeymapTranslator(keymap)
+        evt1 = Event("key", "a")
+        evt2 = Event("key", "c")
+        evt3 = Event("key", "b")
+        translator.push(evt1)
+        translator.push(evt2)
+        translator.push(evt3)
+        result = translator.get()
+        self.assertEqual(result, (None, ["a", "c"]))
+
+    def test_push_invalid_key_with_unicode_category(self):
+        keymap = [("a", "command_a")]
+        translator = KeymapTranslator(keymap)
+        evt = Event("key", "\u0003")  # Control character
+        translator.push(evt)
+        result = translator.get()
+        self.assertEqual(result, (None, ["\u0003"]))
+
+    def test_empty(self):
+        keymap = [("a", "command_a")]
+        translator = KeymapTranslator(keymap)
+        self.assertTrue(translator.empty())
+        evt = Event("key", "a")
+        translator.push(evt)
+        self.assertFalse(translator.empty())
+        translator.get()
+        self.assertTrue(translator.empty())
diff --git a/Lib/test/test_pyrepl/test_interact.py b/Lib/test/test_pyrepl/test_interact.py
new file mode 100644
index 00000000000000..8b941b93670e84
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_interact.py
@@ -0,0 +1,262 @@
+import contextlib
+import io
+import unittest
+from unittest.mock import patch
+from textwrap import dedent
+
+from test.support import force_not_colorized
+
+from _pyrepl.console import InteractiveColoredConsole
+from _pyrepl.simple_interact import _more_lines
+
+class TestSimpleInteract(unittest.TestCase):
+    def test_multiple_statements(self):
+        namespace = {}
+        code = dedent("""\
+        class A:
+            def foo(self):
+
+
+                pass
+
+        class B:
+            def bar(self):
+                pass
+
+        a = 1
+        a
+        """)
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        f = io.StringIO()
+        with (
+            patch.object(InteractiveColoredConsole, "showsyntaxerror") as showsyntaxerror,
+            patch.object(InteractiveColoredConsole, "runsource", wraps=console.runsource) as runsource,
+            contextlib.redirect_stdout(f),
+        ):
+            more = console.push(code, filename="<stdin>", _symbol="single")  # type: ignore[call-arg]
+        self.assertFalse(more)
+        showsyntaxerror.assert_not_called()
+
+
+    def test_multiple_statements_output(self):
+        namespace = {}
+        code = dedent("""\
+        b = 1
+        b
+        a = 1
+        a
+        """)
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            more = console.push(code, filename="<stdin>", _symbol="single")  # type: ignore[call-arg]
+        self.assertFalse(more)
+        self.assertEqual(f.getvalue(), "1\n")
+
+    def test_empty(self):
+        namespace = {}
+        code = ""
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            more = console.push(code, filename="<stdin>", _symbol="single")  # type: ignore[call-arg]
+        self.assertFalse(more)
+        self.assertEqual(f.getvalue(), "")
+
+    def test_runsource_compiles_and_runs_code(self):
+        console = InteractiveColoredConsole()
+        source = "print('Hello, world!')"
+        with patch.object(console, "runcode") as mock_runcode:
+            console.runsource(source)
+            mock_runcode.assert_called_once()
+
+    def test_runsource_returns_false_for_successful_compilation(self):
+        console = InteractiveColoredConsole()
+        source = "print('Hello, world!')"
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+
+    @force_not_colorized
+    def test_runsource_returns_false_for_failed_compilation(self):
+        console = InteractiveColoredConsole()
+        source = "print('Hello, world!'"
+        f = io.StringIO()
+        with contextlib.redirect_stderr(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+        self.assertIn('SyntaxError', f.getvalue())
+
+    @force_not_colorized
+    def test_runsource_show_syntax_error_location(self):
+        console = InteractiveColoredConsole()
+        source = "def f(x, x): ..."
+        f = io.StringIO()
+        with contextlib.redirect_stderr(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+        r = """
+    def f(x, x): ...
+             ^
+SyntaxError: duplicate argument 'x' in function definition"""
+        self.assertIn(r, f.getvalue())
+
+    def test_runsource_shows_syntax_error_for_failed_compilation(self):
+        console = InteractiveColoredConsole()
+        source = "print('Hello, world!'"
+        with patch.object(console, "showsyntaxerror") as mock_showsyntaxerror:
+            console.runsource(source)
+            mock_showsyntaxerror.assert_called_once()
+        source = dedent("""\
+        match 1:
+            case {0: _, 0j: _}:
+                pass
+        """)
+        with patch.object(console, "showsyntaxerror") as mock_showsyntaxerror:
+            console.runsource(source)
+            mock_showsyntaxerror.assert_called_once()
+
+    def test_runsource_survives_null_bytes(self):
+        console = InteractiveColoredConsole()
+        source = "\x00\n"
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f), contextlib.redirect_stderr(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+        self.assertIn("source code string cannot contain null bytes", f.getvalue())
+
+    def test_no_active_future(self):
+        console = InteractiveColoredConsole()
+        source = dedent("""\
+        x: int = 1
+        print(__annotations__)
+        """)
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+        self.assertEqual(f.getvalue(), "{'x': <class 'int'>}\n")
+
+    def test_future_annotations(self):
+        console = InteractiveColoredConsole()
+        source = dedent("""\
+        from __future__ import annotations
+        def g(x: int): ...
+        print(g.__annotations__)
+        """)
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            result = console.runsource(source)
+        self.assertFalse(result)
+        self.assertEqual(f.getvalue(), "{'x': 'int'}\n")
+
+    def test_future_barry_as_flufl(self):
+        console = InteractiveColoredConsole()
+        f = io.StringIO()
+        with contextlib.redirect_stdout(f):
+            result = console.runsource("from __future__ import barry_as_FLUFL\n")
+            result = console.runsource("""print("black" <> 'blue')\n""")
+        self.assertFalse(result)
+        self.assertEqual(f.getvalue(), "True\n")
+
+
+class TestMoreLines(unittest.TestCase):
+    def test_invalid_syntax_single_line(self):
+        namespace = {}
+        code = "if foo"
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_empty_line(self):
+        namespace = {}
+        code = ""
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_valid_single_statement(self):
+        namespace = {}
+        code = "foo = 1"
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_multiline_single_assignment(self):
+        namespace = {}
+        code = dedent("""\
+        foo = [
+            1,
+            2,
+            3,
+        ]""")
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_multiline_single_block(self):
+        namespace = {}
+        code = dedent("""\
+        def foo():
+            '''docs'''
+
+            return 1""")
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertTrue(_more_lines(console, code))
+
+    def test_multiple_statements_single_line(self):
+        namespace = {}
+        code = "foo = 1;bar = 2"
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_multiple_statements(self):
+        namespace = {}
+        code = dedent("""\
+        import time
+
+        foo = 1""")
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertTrue(_more_lines(console, code))
+
+    def test_multiple_blocks(self):
+        namespace = {}
+        code = dedent("""\
+        from dataclasses import dataclass
+
+        @dataclass
+        class Point:
+            x: float
+            y: float""")
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertTrue(_more_lines(console, code))
+
+    def test_multiple_blocks_empty_newline(self):
+        namespace = {}
+        code = dedent("""\
+        from dataclasses import dataclass
+
+        @dataclass
+        class Point:
+            x: float
+            y: float
+        """)
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_multiple_blocks_indented_newline(self):
+        namespace = {}
+        code = (
+            "from dataclasses import dataclass\n"
+            "\n"
+            "@dataclass\n"
+            "class Point:\n"
+            "    x: float\n"
+            "    y: float\n"
+            "    "
+        )
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertFalse(_more_lines(console, code))
+
+    def test_incomplete_statement(self):
+        namespace = {}
+        code = "if foo:"
+        console = InteractiveColoredConsole(namespace, filename="<stdin>")
+        self.assertTrue(_more_lines(console, code))
diff --git a/Lib/test/test_pyrepl/test_keymap.py b/Lib/test/test_pyrepl/test_keymap.py
new file mode 100644
index 00000000000000..2c97066b2c7043
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_keymap.py
@@ -0,0 +1,120 @@
+import string
+import unittest
+
+from _pyrepl.keymap import _keynames, _escapes, parse_keys, compile_keymap, KeySpecError
+
+
+class TestParseKeys(unittest.TestCase):
+    def test_single_character(self):
+        """Ensure that single ascii characters or single digits are parsed as single characters."""
+        test_cases = [(key, [key]) for key in string.ascii_letters + string.digits]
+        for test_key, expected_keys in test_cases:
+            with self.subTest(f"{test_key} should be parsed as {expected_keys}"):
+                self.assertEqual(parse_keys(test_key), expected_keys)
+
+    def test_keynames(self):
+        """Ensure that keynames are parsed to their corresponding mapping.
+
+        A keyname is expected to be of the following form: \\<keyname> such as \\<left>
+        which would get parsed as "left".
+        """
+        test_cases = [(f"\\<{keyname}>", [parsed_keyname]) for keyname, parsed_keyname in _keynames.items()]
+        for test_key, expected_keys in test_cases:
+            with self.subTest(f"{test_key} should be parsed as {expected_keys}"):
+                self.assertEqual(parse_keys(test_key), expected_keys)
+
+    def test_escape_sequences(self):
+        """Ensure that escaping sequences are parsed to their corresponding mapping."""
+        test_cases = [(f"\\{escape}", [parsed_escape]) for escape, parsed_escape in _escapes.items()]
+        for test_key, expected_keys in test_cases:
+            with self.subTest(f"{test_key} should be parsed as {expected_keys}"):
+                self.assertEqual(parse_keys(test_key), expected_keys)
+
+    def test_control_sequences(self):
+        """Ensure that supported control sequences are parsed successfully."""
+        keys = ["@", "[", "]", "\\", "^", "_", "\\<space>", "\\<delete>"]
+        keys.extend(string.ascii_letters)
+        test_cases = [(f"\\C-{key}", chr(ord(key) & 0x1F)) for key in []]
+        for test_key, expected_keys in test_cases:
+            with self.subTest(f"{test_key} should be parsed as {expected_keys}"):
+                self.assertEqual(parse_keys(test_key), expected_keys)
+
+    def test_meta_sequences(self):
+        self.assertEqual(parse_keys("\\M-a"), ["\033", "a"])
+        self.assertEqual(parse_keys("\\M-b"), ["\033", "b"])
+        self.assertEqual(parse_keys("\\M-c"), ["\033", "c"])
+
+    def test_combinations(self):
+        self.assertEqual(parse_keys("\\C-a\\n\\<up>"), ["\x01", "\n", "up"])
+        self.assertEqual(parse_keys("\\M-a\\t\\<down>"), ["\033", "a", "\t", "down"])
+
+    def test_keyspec_errors(self):
+        cases = [
+            ("\\Ca", "\\C must be followed by `-'"),
+            ("\\ca", "\\C must be followed by `-'"),
+            ("\\C-\\C-", "doubled \\C-"),
+            ("\\Ma", "\\M must be followed by `-'"),
+            ("\\ma", "\\M must be followed by `-'"),
+            ("\\M-\\M-", "doubled \\M-"),
+            ("\\<left", "unterminated \\<"),
+            ("\\<unsupported>", "unrecognised keyname"),
+            ("\\大", "unknown backslash escape"),
+            ("\\C-\\<backspace>", "\\C- followed by invalid key")
+        ]
+        for test_keys, expected_err in cases:
+            with self.subTest(f"{test_keys} should give error {expected_err}"):
+                with self.assertRaises(KeySpecError) as e:
+                    parse_keys(test_keys)
+                self.assertIn(expected_err, str(e.exception))
+
+    def test_index_errors(self):
+        test_cases = ["\\", "\\C", "\\C-\\C"]
+        for test_keys in test_cases:
+            with self.assertRaises(IndexError):
+                parse_keys(test_keys)
+
+
+class TestCompileKeymap(unittest.TestCase):
+    def test_empty_keymap(self):
+        keymap = {}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {})
+
+    def test_single_keymap(self):
+        keymap = {b"a": "action"}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": "action"})
+
+    def test_nested_keymap(self):
+        keymap = {b"a": {b"b": "action"}}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": {b"b": "action"}})
+
+    def test_empty_value(self):
+        keymap = {b"a": {b"": "action"}}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": {b"": "action"}})
+
+    def test_multiple_empty_values(self):
+        keymap = {b"a": {b"": "action1", b"b": "action2"}}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": {b"": "action1", b"b": "action2"}})
+
+    def test_multiple_keymaps(self):
+        keymap = {b"a": {b"b": "action1", b"c": "action2"}}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": {b"b": "action1", b"c": "action2"}})
+
+    def test_nested_multiple_keymaps(self):
+        keymap = {b"a": {b"b": {b"c": "action"}}}
+        result = compile_keymap(keymap)
+        self.assertEqual(result, {b"a": {b"b": {b"c": "action"}}})
+
+    def test_clashing_definitions(self):
+        km = {b'a': 'c', b'a' + b'b': 'd'}
+        with self.assertRaises(KeySpecError):
+            compile_keymap(km)
+
+    def test_non_bytes_key(self):
+        with self.assertRaises(TypeError):
+            compile_keymap({123: 'a'})
diff --git a/Lib/test/test_pyrepl/test_pyrepl.py b/Lib/test/test_pyrepl/test_pyrepl.py
new file mode 100644
index 00000000000000..191fce3f7ae6d5
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_pyrepl.py
@@ -0,0 +1,1358 @@
+import io
+import itertools
+import os
+import pathlib
+import re
+import rlcompleter
+import select
+import subprocess
+import sys
+import tempfile
+from unittest import TestCase, skipUnless, skipIf
+from unittest.mock import patch
+from test.support import force_not_colorized, make_clean_env
+from test.support import SHORT_TIMEOUT
+from test.support.import_helper import import_module
+from test.support.os_helper import unlink
+
+from .support import (
+    FakeConsole,
+    handle_all_events,
+    handle_events_narrow_console,
+    more_lines,
+    multiline_input,
+    code_to_events,
+    clean_screen,
+)
+from _pyrepl.console import Event
+from _pyrepl.readline import (ReadlineAlikeReader, ReadlineConfig,
+                              _ReadlineWrapper)
+from _pyrepl.readline import multiline_input as readline_multiline_input
+
+try:
+    import pty
+except ImportError:
+    pty = None
+
+
+class ReplTestCase(TestCase):
+    def run_repl(
+        self,
+        repl_input: str | list[str],
+        env: dict | None = None,
+        *,
+        cmdline_args: list[str] | None = None,
+        cwd: str | None = None,
+    ) -> tuple[str, int]:
+        temp_dir = None
+        if cwd is None:
+            temp_dir = tempfile.TemporaryDirectory(ignore_cleanup_errors=True)
+            cwd = temp_dir.name
+        try:
+            return self._run_repl(
+                repl_input, env=env, cmdline_args=cmdline_args, cwd=cwd
+            )
+        finally:
+            if temp_dir is not None:
+                temp_dir.cleanup()
+
+    def _run_repl(
+        self,
+        repl_input: str | list[str],
+        *,
+        env: dict | None,
+        cmdline_args: list[str] | None,
+        cwd: str,
+    ) -> tuple[str, int]:
+        assert pty
+        master_fd, slave_fd = pty.openpty()
+        cmd = [sys.executable, "-i", "-u"]
+        if env is None:
+            cmd.append("-I")
+        elif "PYTHON_HISTORY" not in env:
+            env["PYTHON_HISTORY"] = os.path.join(cwd, ".regrtest_history")
+        if cmdline_args is not None:
+            cmd.extend(cmdline_args)
+
+        try:
+            import termios
+        except ModuleNotFoundError:
+            pass
+        else:
+            term_attr = termios.tcgetattr(slave_fd)
+            term_attr[6][termios.VREPRINT] = 0  # pass through CTRL-R
+            term_attr[6][termios.VINTR] = 0  # pass through CTRL-C
+            termios.tcsetattr(slave_fd, termios.TCSANOW, term_attr)
+
+        process = subprocess.Popen(
+            cmd,
+            stdin=slave_fd,
+            stdout=slave_fd,
+            stderr=slave_fd,
+            cwd=cwd,
+            text=True,
+            close_fds=True,
+            env=env if env else os.environ,
+        )
+        os.close(slave_fd)
+        if isinstance(repl_input, list):
+            repl_input = "\n".join(repl_input) + "\n"
+        os.write(master_fd, repl_input.encode("utf-8"))
+
+        output = []
+        while select.select([master_fd], [], [], SHORT_TIMEOUT)[0]:
+            try:
+                data = os.read(master_fd, 1024).decode("utf-8")
+                if not data:
+                    break
+            except OSError:
+                break
+            output.append(data)
+        else:
+            os.close(master_fd)
+            process.kill()
+            self.fail(f"Timeout while waiting for output, got: {''.join(output)}")
+
+        os.close(master_fd)
+        try:
+            exit_code = process.wait(timeout=SHORT_TIMEOUT)
+        except subprocess.TimeoutExpired:
+            process.kill()
+            exit_code = process.wait()
+        return "".join(output), exit_code
+
+
+class TestCursorPosition(TestCase):
+    def prepare_reader(self, events):
+        console = FakeConsole(events)
+        config = ReadlineConfig(readline_completer=None)
+        reader = ReadlineAlikeReader(console=console, config=config)
+        return reader
+
+    def test_up_arrow_simple(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  ...\n"
+        )
+        # fmt: on
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+            ],
+        )
+
+        reader, console = handle_all_events(events)
+        self.assertEqual(reader.cxy, (0, 1))
+        console.move_cursor.assert_called_once_with(0, 1)
+
+    def test_down_arrow_end_of_input(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  ...\n"
+        )
+        # fmt: on
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+
+        reader, console = handle_all_events(events)
+        self.assertEqual(reader.cxy, (0, 2))
+        console.move_cursor.assert_called_once_with(0, 2)
+
+    def test_left_arrow_simple(self):
+        events = itertools.chain(
+            code_to_events("11+11"),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+            ],
+        )
+
+        reader, console = handle_all_events(events)
+        self.assertEqual(reader.cxy, (4, 0))
+        console.move_cursor.assert_called_once_with(4, 0)
+
+    def test_right_arrow_end_of_line(self):
+        events = itertools.chain(
+            code_to_events("11+11"),
+            [
+                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
+            ],
+        )
+
+        reader, console = handle_all_events(events)
+        self.assertEqual(reader.cxy, (5, 0))
+        console.move_cursor.assert_called_once_with(5, 0)
+
+    def test_cursor_position_simple_character(self):
+        events = itertools.chain(code_to_events("k"))
+
+        reader, _ = handle_all_events(events)
+        self.assertEqual(reader.pos, 1)
+
+        # 1 for simple character
+        self.assertEqual(reader.cxy, (1, 0))
+
+    def test_cursor_position_double_width_character(self):
+        events = itertools.chain(code_to_events("樂"))
+
+        reader, _ = handle_all_events(events)
+        self.assertEqual(reader.pos, 1)
+
+        # 2 for wide character
+        self.assertEqual(reader.cxy, (2, 0))
+
+    def test_cursor_position_double_width_character_move_left(self):
+        events = itertools.chain(
+            code_to_events("樂"),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+        self.assertEqual(reader.pos, 0)
+        self.assertEqual(reader.cxy, (0, 0))
+
+    def test_cursor_position_double_width_character_move_left_right(self):
+        events = itertools.chain(
+            code_to_events("樂"),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+        self.assertEqual(reader.pos, 1)
+
+        # 2 for wide character
+        self.assertEqual(reader.cxy, (2, 0))
+
+    def test_cursor_position_double_width_characters_move_up(self):
+        for_loop = "for _ in _:"
+
+        # fmt: off
+        code = (
+           f"{for_loop}\n"
+            "  ' 可口可乐; 可口可樂'"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+
+        # cursor at end of first line
+        self.assertEqual(reader.pos, len(for_loop))
+        self.assertEqual(reader.cxy, (len(for_loop), 0))
+
+    def test_cursor_position_double_width_characters_move_up_down(self):
+        for_loop = "for _ in _:"
+
+        # fmt: off
+        code = (
+           f"{for_loop}\n"
+            "  ' 可口可乐; 可口可樂'"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+
+        # cursor here (showing 2nd line only):
+        # <  ' 可口可乐; 可口可樂'>
+        #              ^
+        self.assertEqual(reader.pos, 19)
+        self.assertEqual(reader.cxy, (10, 1))
+
+    def test_cursor_position_multiple_double_width_characters_move_left(self):
+        events = itertools.chain(
+            code_to_events("' 可口可乐; 可口可樂'"),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+        self.assertEqual(reader.pos, 10)
+
+        # 1 for quote, 1 for space, 2 per wide character,
+        # 1 for semicolon, 1 for space, 2 per wide character
+        self.assertEqual(reader.cxy, (16, 0))
+
+    def test_cursor_position_move_up_to_eol(self):
+        first_line = "for _ in _:"
+        second_line = "  hello"
+
+        # fmt: off
+        code = (
+            f"{first_line}\n"
+            f"{second_line}\n"
+             "  h\n"
+             "  hel"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+
+        # Cursor should be at end of line 1, even though line 2 is shorter
+        # for _ in _:
+        #   hello
+        #   h
+        #   hel
+        self.assertEqual(
+            reader.pos, len(first_line) + len(second_line) + 1
+        )  # +1 for newline
+        self.assertEqual(reader.cxy, (len(second_line), 1))
+
+    def test_cursor_position_move_down_to_eol(self):
+        last_line = "  hel"
+
+        # fmt: off
+        code = (
+            "for _ in _:\n"
+            "  hello\n"
+            "  h\n"
+           f"{last_line}"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+
+        reader, _ = handle_all_events(events)
+
+        # Cursor should be at end of line 3, even though line 2 is shorter
+        # for _ in _:
+        #   hello
+        #   h
+        #   hel
+        self.assertEqual(reader.pos, len(code))
+        self.assertEqual(reader.cxy, (len(last_line), 3))
+
+    def test_cursor_position_multiple_mixed_lines_move_up(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+            "  x = '可口可乐; 可口可樂'\n"
+            "  y = 'abckdfjskldfjslkdjf'"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            13 * [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
+            [Event(evt="key", data="up", raw=bytearray(b"\x1bOA"))],
+        )
+
+        reader, _ = handle_all_events(events)
+
+        # By moving left, we're before the s:
+        # y = 'abckdfjskldfjslkdjf'
+        #             ^
+        # And we should move before the semi-colon despite the different offset
+        # x = '可口可乐; 可口可樂'
+        #            ^
+        self.assertEqual(reader.pos, 22)
+        self.assertEqual(reader.cxy, (15, 1))
+
+    def test_cursor_position_after_wrap_and_move_up(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+            "  hello"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+            ],
+        )
+        reader, _ = handle_events_narrow_console(events)
+
+        # The code looks like this:
+        # def foo()\
+        # :
+        #   hello
+        # After moving up we should be after the colon in line 2
+        self.assertEqual(reader.pos, 10)
+        self.assertEqual(reader.cxy, (1, 1))
+
+
+class TestPyReplAutoindent(TestCase):
+    def prepare_reader(self, events):
+        console = FakeConsole(events)
+        config = ReadlineConfig(readline_completer=None)
+        reader = ReadlineAlikeReader(console=console, config=config)
+        return reader
+
+    def test_auto_indent_default(self):
+        # fmt: off
+        input_code = (
+            "def f():\n"
+                "pass\n\n"
+        )
+
+        output_code = (
+            "def f():\n"
+            "    pass\n"
+            "    "
+        )
+        # fmt: on
+
+    def test_auto_indent_continuation(self):
+        # auto indenting according to previous user indentation
+        # fmt: off
+        events = itertools.chain(
+            code_to_events("def f():\n"),
+            # add backspace to delete default auto-indent
+            [
+                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
+            ],
+            code_to_events(
+                "  pass\n"
+                  "pass\n\n"
+            ),
+        )
+
+        output_code = (
+            "def f():\n"
+            "  pass\n"
+            "  pass\n"
+            "  "
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_auto_indent_prev_block(self):
+        # auto indenting according to indentation in different block
+        # fmt: off
+        events = itertools.chain(
+            code_to_events("def f():\n"),
+            # add backspace to delete default auto-indent
+            [
+                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
+            ],
+            code_to_events(
+                "  pass\n"
+                "pass\n\n"
+            ),
+            code_to_events(
+                "def g():\n"
+                  "pass\n\n"
+            ),
+        )
+
+        output_code = (
+            "def g():\n"
+            "  pass\n"
+            "  "
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output1 = multiline_input(reader)
+        output2 = multiline_input(reader)
+        self.assertEqual(output2, output_code)
+
+    def test_auto_indent_multiline(self):
+        # fmt: off
+        events = itertools.chain(
+            code_to_events(
+                "def f():\n"
+                    "pass"
+            ),
+            [
+                # go to the end of the first line
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
+                # new line should be autoindented
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+            code_to_events(
+                "pass"
+            ),
+            [
+                # go to end of last line
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
+                # double newline to terminate the block
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        output_code = (
+            "def f():\n"
+            "    pass\n"
+            "    pass\n"
+            "    "
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_auto_indent_with_comment(self):
+        # fmt: off
+        events = code_to_events(
+            "def f():  # foo\n"
+                "pass\n\n"
+        )
+
+        output_code = (
+            "def f():  # foo\n"
+            "    pass\n"
+            "    "
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_auto_indent_with_multicomment(self):
+        # fmt: off
+        events = code_to_events(
+            "def f():  ## foo\n"
+                "pass\n\n"
+        )
+
+        output_code = (
+            "def f():  ## foo\n"
+            "    pass\n"
+            "    "
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_auto_indent_ignore_comments(self):
+        # fmt: off
+        events = code_to_events(
+            "pass  #:\n"
+        )
+
+        output_code = (
+            "pass  #:"
+        )
+        # fmt: on
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+
+class TestPyReplOutput(TestCase):
+    def prepare_reader(self, events):
+        console = FakeConsole(events)
+        config = ReadlineConfig(readline_completer=None)
+        reader = ReadlineAlikeReader(console=console, config=config)
+        reader.can_colorize = False
+        return reader
+
+    def test_stdin_is_tty(self):
+        # Used during test log analysis to figure out if a TTY was available.
+        try:
+            if os.isatty(sys.stdin.fileno()):
+                return
+        except OSError as ose:
+            self.skipTest(f"stdin tty check failed: {ose}")
+        else:
+            self.skipTest("stdin is not a tty")
+
+    def test_stdout_is_tty(self):
+        # Used during test log analysis to figure out if a TTY was available.
+        try:
+            if os.isatty(sys.stdout.fileno()):
+                return
+        except OSError as ose:
+            self.skipTest(f"stdout tty check failed: {ose}")
+        else:
+            self.skipTest("stdout is not a tty")
+
+    def test_basic(self):
+        reader = self.prepare_reader(code_to_events("1+1\n"))
+
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+
+    def test_get_line_buffer_returns_str(self):
+        reader = self.prepare_reader(code_to_events("\n"))
+        wrapper = _ReadlineWrapper(f_in=None, f_out=None, reader=reader)
+        self.assertIs(type(wrapper.get_line_buffer()), str)
+
+    def test_multiline_edit(self):
+        events = itertools.chain(
+            code_to_events("def f():\n...\n\n"),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="backspace", raw=bytearray(b"\x08")),
+                Event(evt="key", data="g", raw=bytearray(b"g")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="backspace", raw=bytearray(b"\x08")),
+                Event(evt="key", data="delete", raw=bytearray(b"\x7F")),
+                Event(evt="key", data="right", raw=bytearray(b"g")),
+                Event(evt="key", data="backspace", raw=bytearray(b"\x08")),
+                Event(evt="key", data="p", raw=bytearray(b"p")),
+                Event(evt="key", data="a", raw=bytearray(b"a")),
+                Event(evt="key", data="s", raw=bytearray(b"s")),
+                Event(evt="key", data="s", raw=bytearray(b"s")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+        reader = self.prepare_reader(events)
+
+        output = multiline_input(reader)
+        self.assertEqual(output, "def f():\n    ...\n    ")
+        self.assertEqual(clean_screen(reader.screen), "def f():\n    ...")
+        output = multiline_input(reader)
+        self.assertEqual(output, "def g():\n    pass\n    ")
+        self.assertEqual(clean_screen(reader.screen), "def g():\n    pass")
+
+    def test_history_navigation_with_up_arrow(self):
+        events = itertools.chain(
+            code_to_events("1+1\n2+2\n"),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        reader = self.prepare_reader(events)
+
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+        output = multiline_input(reader)
+        self.assertEqual(output, "2+2")
+        self.assertEqual(clean_screen(reader.screen), "2+2")
+        output = multiline_input(reader)
+        self.assertEqual(output, "2+2")
+        self.assertEqual(clean_screen(reader.screen), "2+2")
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+
+    def test_history_with_multiline_entries(self):
+        code = "def foo():\nx = 1\ny = 2\nz = 3\n\ndef bar():\nreturn 42\n\n"
+        events = list(itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ]
+        ))
+
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        output = multiline_input(reader)
+        output = multiline_input(reader)
+        self.assertEqual(
+            clean_screen(reader.screen),
+            'def foo():\n    x = 1\n    y = 2\n    z = 3'
+        )
+        self.assertEqual(output, "def foo():\n    x = 1\n    y = 2\n    z = 3\n    ")
+
+
+    def test_history_navigation_with_down_arrow(self):
+        events = itertools.chain(
+            code_to_events("1+1\n2+2\n"),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+
+        reader = self.prepare_reader(events)
+
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+
+    def test_history_search(self):
+        events = itertools.chain(
+            code_to_events("1+1\n2+2\n3+3\n"),
+            [
+                Event(evt="key", data="\x12", raw=bytearray(b"\x12")),
+                Event(evt="key", data="1", raw=bytearray(b"1")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        reader = self.prepare_reader(events)
+
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+        output = multiline_input(reader)
+        self.assertEqual(output, "2+2")
+        self.assertEqual(clean_screen(reader.screen), "2+2")
+        output = multiline_input(reader)
+        self.assertEqual(output, "3+3")
+        self.assertEqual(clean_screen(reader.screen), "3+3")
+        output = multiline_input(reader)
+        self.assertEqual(output, "1+1")
+        self.assertEqual(clean_screen(reader.screen), "1+1")
+
+    def test_control_character(self):
+        events = code_to_events("c\x1d\n")
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, "c\x1d")
+        self.assertEqual(clean_screen(reader.screen), "c")
+
+    def test_history_search_backward(self):
+        # Test <page up> history search backward with "imp" input
+        events = itertools.chain(
+            code_to_events("import os\n"),
+            code_to_events("imp"),
+            [
+                Event(evt='key', data='page up', raw=bytearray(b'\x1b[5~')),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        # fill the history
+        reader = self.prepare_reader(events)
+        multiline_input(reader)
+
+        # search for "imp" in history
+        output = multiline_input(reader)
+        self.assertEqual(output, "import os")
+        self.assertEqual(clean_screen(reader.screen), "import os")
+
+    def test_history_search_backward_empty(self):
+        # Test <page up> history search backward with an empty input
+        events = itertools.chain(
+            code_to_events("import os\n"),
+            [
+                Event(evt='key', data='page up', raw=bytearray(b'\x1b[5~')),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        # fill the history
+        reader = self.prepare_reader(events)
+        multiline_input(reader)
+
+        # search backward in history
+        output = multiline_input(reader)
+        self.assertEqual(output, "import os")
+        self.assertEqual(clean_screen(reader.screen), "import os")
+
+
+class TestPyReplCompleter(TestCase):
+    def prepare_reader(self, events, namespace):
+        console = FakeConsole(events)
+        config = ReadlineConfig()
+        config.readline_completer = rlcompleter.Completer(namespace).complete
+        reader = ReadlineAlikeReader(console=console, config=config)
+        return reader
+
+    @patch("rlcompleter._readline_available", False)
+    def test_simple_completion(self):
+        events = code_to_events("os.getpid\t\n")
+
+        namespace = {"os": os}
+        reader = self.prepare_reader(events, namespace)
+
+        output = multiline_input(reader, namespace)
+        self.assertEqual(output, "os.getpid()")
+
+    def test_completion_with_many_options(self):
+        # Test with something that initially displays many options
+        # and then complete from one of them. The first time tab is
+        # pressed, the options are displayed (which corresponds to
+        # when the repl shows [ not unique ]) and the second completes
+        # from one of them.
+        events = code_to_events("os.\t\tO_AP\t\n")
+
+        namespace = {"os": os}
+        reader = self.prepare_reader(events, namespace)
+
+        output = multiline_input(reader, namespace)
+        self.assertEqual(output, "os.O_APPEND")
+
+    def test_empty_namespace_completion(self):
+        events = code_to_events("os.geten\t\n")
+        namespace = {}
+        reader = self.prepare_reader(events, namespace)
+
+        output = multiline_input(reader, namespace)
+        self.assertEqual(output, "os.geten")
+
+    def test_global_namespace_completion(self):
+        events = code_to_events("py\t\n")
+        namespace = {"python": None}
+        reader = self.prepare_reader(events, namespace)
+        output = multiline_input(reader, namespace)
+        self.assertEqual(output, "python")
+
+    def test_up_down_arrow_with_completion_menu(self):
+        """Up arrow in the middle of unfinished tab completion when the menu is displayed
+        should work and trigger going back in history. Down arrow should subsequently
+        get us back to the incomplete command."""
+        code = "import os\nos.\t\t"
+        namespace = {"os": os}
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+            code_to_events("\n"),
+        )
+        reader = self.prepare_reader(events, namespace=namespace)
+        output = multiline_input(reader, namespace)
+        # This is the first line, nothing to see here
+        self.assertEqual(output, "import os")
+        # This is the second line. We pressed up and down arrows
+        # so we should end up where we were when we initiated tab completion.
+        output = multiline_input(reader, namespace)
+        self.assertEqual(output, "os.")
+
+    @patch("_pyrepl.readline._ReadlineWrapper.get_reader")
+    @patch("sys.stderr", new_callable=io.StringIO)
+    def test_completion_with_warnings(self, mock_stderr, mock_get_reader):
+        class Dummy:
+            @property
+            def test_func(self):
+                import warnings
+
+                warnings.warn("warnings\n")
+                return None
+
+        dummy = Dummy()
+        events = code_to_events("dummy.test_func.\t\n\n")
+        namespace = {"dummy": dummy}
+        reader = self.prepare_reader(events, namespace)
+        mock_get_reader.return_value = reader
+        output = readline_multiline_input(more_lines, ">>>", "...")
+        self.assertEqual(output, "dummy.test_func.__")
+        self.assertEqual(mock_stderr.getvalue(), "")
+
+
+class TestPasteEvent(TestCase):
+    def prepare_reader(self, events):
+        console = FakeConsole(events)
+        config = ReadlineConfig(readline_completer=None)
+        reader = ReadlineAlikeReader(console=console, config=config)
+        return reader
+
+    def test_paste(self):
+        # fmt: off
+        code = (
+            "def a():\n"
+            "  for x in range(10):\n"
+            "    if x%2:\n"
+            "      print(x)\n"
+            "    else:\n"
+            "      pass\n"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            [
+                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
+            ],
+            code_to_events(code),
+            [
+                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
+            ],
+            code_to_events("\n"),
+        )
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, code)
+
+    def test_paste_mid_newlines(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  x = y\n"
+            "  \n"
+            "  y = z\n"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            [
+                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
+            ],
+            code_to_events(code),
+            [
+                Event(evt="key", data="f3", raw=bytearray(b"\x1bOR")),
+            ],
+            code_to_events("\n"),
+        )
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, code)
+
+    def test_paste_mid_newlines_not_in_paste_mode(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+                "x = y\n"
+                "\n"
+                "y = z\n\n"
+        )
+
+        expected = (
+            "def f():\n"
+            "    x = y\n"
+            "    "
+        )
+        # fmt: on
+
+        events = code_to_events(code)
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, expected)
+
+    def test_paste_not_in_paste_mode(self):
+        # fmt: off
+        input_code = (
+            "def a():\n"
+                "for x in range(10):\n"
+                    "if x%2:\n"
+                        "print(x)\n"
+                    "else:\n"
+                        "pass\n\n"
+        )
+
+        output_code = (
+            "def a():\n"
+            "    for x in range(10):\n"
+            "        if x%2:\n"
+            "            print(x)\n"
+            "            else:"
+        )
+        # fmt: on
+
+        events = code_to_events(input_code)
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_bracketed_paste(self):
+        """Test that bracketed paste using \x1b[200~ and \x1b[201~ works."""
+        # fmt: off
+        input_code = (
+            "def a():\n"
+            "  for x in range(10):\n"
+            "\n"
+            "    if x%2:\n"
+            "      print(x)\n"
+            "\n"
+            "    else:\n"
+            "      pass\n"
+        )
+
+        output_code = (
+            "def a():\n"
+            "  for x in range(10):\n"
+            "\n"
+            "    if x%2:\n"
+            "      print(x)\n"
+            "\n"
+            "    else:\n"
+            "      pass\n"
+        )
+        # fmt: on
+
+        paste_start = "\x1b[200~"
+        paste_end = "\x1b[201~"
+
+        events = itertools.chain(
+            code_to_events(paste_start),
+            code_to_events(input_code),
+            code_to_events(paste_end),
+            code_to_events("\n"),
+        )
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, output_code)
+
+    def test_bracketed_paste_single_line(self):
+        input_code = "oneline"
+
+        paste_start = "\x1b[200~"
+        paste_end = "\x1b[201~"
+
+        events = itertools.chain(
+            code_to_events(paste_start),
+            code_to_events(input_code),
+            code_to_events(paste_end),
+            code_to_events("\n"),
+        )
+        reader = self.prepare_reader(events)
+        output = multiline_input(reader)
+        self.assertEqual(output, input_code)
+
+
+@skipUnless(pty, "requires pty")
+class TestDumbTerminal(ReplTestCase):
+    def test_dumb_terminal_exits_cleanly(self):
+        env = os.environ.copy()
+        env.update({"TERM": "dumb"})
+        output, exit_code = self.run_repl("exit()\n", env=env)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("warning: can't use pyrepl", output)
+        self.assertNotIn("Exception", output)
+        self.assertNotIn("Traceback", output)
+
+
+@skipUnless(pty, "requires pty")
+@skipIf((os.environ.get("TERM") or "dumb") == "dumb", "can't use pyrepl in dumb terminal")
+class TestMain(ReplTestCase):
+    def setUp(self):
+        # Cleanup from PYTHON* variables to isolate from local
+        # user settings, see #121359.  Such variables should be
+        # added later in test methods to patched os.environ.
+        patcher = patch('os.environ', new=make_clean_env())
+        self.addCleanup(patcher.stop)
+        patcher.start()
+
+    @force_not_colorized
+    def test_exposed_globals_in_repl(self):
+        pre = "['__annotations__', '__builtins__'"
+        post = "'__loader__', '__name__', '__package__', '__spec__']"
+        output, exit_code = self.run_repl(["sorted(dir())", "exit()"])
+        if "can't use pyrepl" in output:
+            self.skipTest("pyrepl not available")
+        self.assertEqual(exit_code, 0)
+
+        # if `__main__` is not a file (impossible with pyrepl)
+        case1 = f"{pre}, '__doc__', {post}" in output
+
+        # if `__main__` is an uncached .py file (no .pyc)
+        case2 = f"{pre}, '__doc__', '__file__', {post}" in output
+
+        # if `__main__` is a cached .pyc file and the .py source exists
+        case3 = f"{pre}, '__cached__', '__doc__', '__file__', {post}" in output
+
+        # if `__main__` is a cached .pyc file but there's no .py source file
+        case4 = f"{pre}, '__cached__', '__doc__', {post}" in output
+
+        self.assertTrue(case1 or case2 or case3 or case4, output)
+
+    def _assertMatchOK(
+            self, var: str, expected: str | re.Pattern, actual: str
+    ) -> None:
+        if isinstance(expected, re.Pattern):
+            self.assertTrue(
+                expected.match(actual),
+                f"{var}={actual} does not match {expected.pattern}",
+            )
+        else:
+            self.assertEqual(
+                actual,
+                expected,
+                f"expected {var}={expected}, got {var}={actual}",
+            )
+
+    @force_not_colorized
+    def _run_repl_globals_test(self, expectations, *, as_file=False, as_module=False):
+        clean_env = make_clean_env()
+        clean_env["NO_COLOR"] = "1"  # force_not_colorized doesn't touch subprocesses
+
+        with tempfile.TemporaryDirectory() as td:
+            blue = pathlib.Path(td) / "blue"
+            blue.mkdir()
+            mod = blue / "calx.py"
+            mod.write_text("FOO = 42", encoding="utf-8")
+            commands = [
+                "print(f'^{" + var + "=}')" for var in expectations
+            ] + ["exit()"]
+            if as_file and as_module:
+                self.fail("as_file and as_module are mutually exclusive")
+            elif as_file:
+                output, exit_code = self.run_repl(
+                    commands,
+                    cmdline_args=[str(mod)],
+                    env=clean_env,
+                )
+            elif as_module:
+                output, exit_code = self.run_repl(
+                    commands,
+                    cmdline_args=["-m", "blue.calx"],
+                    env=clean_env,
+                    cwd=td,
+                )
+            else:
+                self.fail("Choose one of as_file or as_module")
+
+        if "can't use pyrepl" in output:
+            self.skipTest("pyrepl not available")
+
+        self.assertEqual(exit_code, 0)
+        for var, expected in expectations.items():
+            with self.subTest(var=var, expected=expected):
+                if m := re.search(rf"\^{var}=(.+?)[\r\n]", output):
+                    self._assertMatchOK(var, expected, actual=m.group(1))
+                else:
+                    self.fail(f"{var}= not found in output: {output!r}\n\n{output}")
+
+        self.assertNotIn("Exception", output)
+        self.assertNotIn("Traceback", output)
+
+    def test_inspect_keeps_globals_from_inspected_file(self):
+        expectations = {
+            "FOO": "42",
+            "__name__": "'__main__'",
+            "__package__": "None",
+            # "__file__" is missing in -i, like in the basic REPL
+        }
+        self._run_repl_globals_test(expectations, as_file=True)
+
+    def test_inspect_keeps_globals_from_inspected_module(self):
+        expectations = {
+            "FOO": "42",
+            "__name__": "'__main__'",
+            "__package__": "'blue'",
+            "__file__": re.compile(r"^'.*calx.py'$"),
+        }
+        self._run_repl_globals_test(expectations, as_module=True)
+
+    @force_not_colorized
+    def test_python_basic_repl(self):
+        env = os.environ.copy()
+        commands = ("from test.support import initialized_with_pyrepl\n"
+                    "initialized_with_pyrepl()\n"
+                    "exit()\n")
+
+        env.pop("PYTHON_BASIC_REPL", None)
+        output, exit_code = self.run_repl(commands, env=env)
+        if "can\'t use pyrepl" in output:
+            self.skipTest("pyrepl not available")
+        self.assertEqual(exit_code, 0)
+        self.assertIn("True", output)
+        self.assertNotIn("False", output)
+        self.assertNotIn("Exception", output)
+        self.assertNotIn("Traceback", output)
+
+        env["PYTHON_BASIC_REPL"] = "1"
+        output, exit_code = self.run_repl(commands, env=env)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("False", output)
+        self.assertNotIn("True", output)
+        self.assertNotIn("Exception", output)
+        self.assertNotIn("Traceback", output)
+
+        # The site module must not load _pyrepl if PYTHON_BASIC_REPL is set
+        commands = ("import sys\n"
+                    "print('_pyrepl' in sys.modules)\n"
+                    "exit()\n")
+        env["PYTHON_BASIC_REPL"] = "1"
+        output, exit_code = self.run_repl(commands, env=env)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("False", output)
+        self.assertNotIn("True", output)
+        self.assertNotIn("Exception", output)
+        self.assertNotIn("Traceback", output)
+
+    @force_not_colorized
+    def test_bad_sys_excepthook_doesnt_crash_pyrepl(self):
+        env = os.environ.copy()
+        commands = ("import sys\n"
+                    "sys.excepthook = 1\n"
+                    "1/0\n"
+                    "exit()\n")
+
+        def check(output, exitcode):
+            self.assertIn("Error in sys.excepthook:", output)
+            self.assertEqual(output.count("'int' object is not callable"), 1)
+            self.assertIn("Original exception was:", output)
+            self.assertIn("division by zero", output)
+            self.assertEqual(exitcode, 0)
+        env.pop("PYTHON_BASIC_REPL", None)
+        output, exit_code = self.run_repl(commands, env=env)
+        if "can\'t use pyrepl" in output:
+            self.skipTest("pyrepl not available")
+        check(output, exit_code)
+
+        env["PYTHON_BASIC_REPL"] = "1"
+        output, exit_code = self.run_repl(commands, env=env)
+        check(output, exit_code)
+
+    def test_not_wiping_history_file(self):
+        # skip, if readline module is not available
+        import_module('readline')
+
+        hfile = tempfile.NamedTemporaryFile(delete=False)
+        self.addCleanup(unlink, hfile.name)
+        env = os.environ.copy()
+        env["PYTHON_HISTORY"] = hfile.name
+        commands = "123\nspam\nexit()\n"
+
+        env.pop("PYTHON_BASIC_REPL", None)
+        output, exit_code = self.run_repl(commands, env=env)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("123", output)
+        self.assertIn("spam", output)
+        self.assertNotEqual(pathlib.Path(hfile.name).stat().st_size, 0)
+
+        hfile.file.truncate()
+        hfile.close()
+
+        env["PYTHON_BASIC_REPL"] = "1"
+        output, exit_code = self.run_repl(commands, env=env)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("123", output)
+        self.assertIn("spam", output)
+        self.assertNotEqual(pathlib.Path(hfile.name).stat().st_size, 0)
+
+    @force_not_colorized
+    def test_correct_filename_in_syntaxerrors(self):
+        env = os.environ.copy()
+        commands = "a b c\nexit()\n"
+        output, exit_code = self.run_repl(commands, env=env)
+        if "can't use pyrepl" in output:
+            self.skipTest("pyrepl not available")
+        self.assertIn("SyntaxError: invalid syntax", output)
+        self.assertIn("<python-input-0>", output)
+        commands = " b\nexit()\n"
+        output, exit_code = self.run_repl(commands, env=env)
+        self.assertIn("IndentationError: unexpected indent", output)
+        self.assertIn("<python-input-0>", output)
+
+    @force_not_colorized
+    def test_proper_tracebacklimit(self):
+        env = os.environ.copy()
+        for set_tracebacklimit in [True, False]:
+            commands = ("import sys\n" +
+                        ("sys.tracebacklimit = 1\n" if set_tracebacklimit else "") +
+                        "def x1(): 1/0\n\n"
+                        "def x2(): x1()\n\n"
+                        "def x3(): x2()\n\n"
+                        "x3()\n"
+                        "exit()\n")
+
+            for basic_repl in [True, False]:
+                if basic_repl:
+                    env["PYTHON_BASIC_REPL"] = "1"
+                else:
+                    env.pop("PYTHON_BASIC_REPL", None)
+                with self.subTest(set_tracebacklimit=set_tracebacklimit,
+                                  basic_repl=basic_repl):
+                    output, exit_code = self.run_repl(commands, env=env)
+                    if "can't use pyrepl" in output:
+                        self.skipTest("pyrepl not available")
+                    self.assertIn("in x1", output)
+                    if set_tracebacklimit:
+                        self.assertNotIn("in x2", output)
+                        self.assertNotIn("in x3", output)
+                        self.assertNotIn("in <module>", output)
+                    else:
+                        self.assertIn("in x2", output)
+                        self.assertIn("in x3", output)
+                        self.assertIn("in <module>", output)
+
+    def test_null_byte(self):
+        output, exit_code = self.run_repl("\x00\nexit()\n")
+        self.assertEqual(exit_code, 0)
+        self.assertNotIn("TypeError", output)
+
+    def test_readline_history_file(self):
+        # skip, if readline module is not available
+        readline = import_module('readline')
+        if readline.backend != "editline":
+            self.skipTest("GNU readline is not affected by this issue")
+
+        with tempfile.NamedTemporaryFile() as hfile:
+            env = os.environ.copy()
+            env["PYTHON_HISTORY"] = hfile.name
+
+            env["PYTHON_BASIC_REPL"] = "1"
+            output, exit_code = self.run_repl("spam \nexit()\n", env=env)
+            self.assertEqual(exit_code, 0)
+            self.assertIn("spam ", output)
+            self.assertNotEqual(pathlib.Path(hfile.name).stat().st_size, 0)
+            self.assertIn("spam\\040", pathlib.Path(hfile.name).read_text())
+
+            env.pop("PYTHON_BASIC_REPL", None)
+            output, exit_code = self.run_repl("exit\n", env=env)
+            self.assertEqual(exit_code, 0)
+            self.assertNotIn("\\040", pathlib.Path(hfile.name).read_text())
+
+    def test_keyboard_interrupt_after_isearch(self):
+        output, exit_code = self.run_repl(["\x12", "\x03", "exit"])
+        self.assertEqual(exit_code, 0)
+
+    def test_prompt_after_help(self):
+        output, exit_code = self.run_repl(["help", "q", "exit"])
+
+        # Regex pattern to remove ANSI escape sequences
+        ansi_escape = re.compile(r"(\x1B(=|>|(\[)[0-?]*[ -\/]*[@-~]))")
+        cleaned_output = ansi_escape.sub("", output)
+        self.assertEqual(exit_code, 0)
+
+        # Ensure that we don't see multiple prompts after exiting `help`
+        # Extra stuff (newline and `exit` rewrites) are necessary
+        # because of how run_repl works.
+        self.assertNotIn(">>> \n>>> >>>", cleaned_output)
diff --git a/Lib/test/test_pyrepl/test_reader.py b/Lib/test/test_pyrepl/test_reader.py
new file mode 100644
index 00000000000000..27c6d6664eda9e
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_reader.py
@@ -0,0 +1,321 @@
+import itertools
+import functools
+import rlcompleter
+from unittest import TestCase
+from unittest.mock import MagicMock
+
+from .support import handle_all_events, handle_events_narrow_console, code_to_events, prepare_reader, prepare_console
+from _pyrepl.console import Event
+from _pyrepl.reader import Reader
+
+
+class TestReader(TestCase):
+    def assert_screen_equals(self, reader, expected):
+        actual = reader.screen
+        expected = expected.split("\n")
+        self.assertListEqual(actual, expected)
+
+    def test_calc_screen_wrap_simple(self):
+        events = code_to_events(10 * "a")
+        reader, _ = handle_events_narrow_console(events)
+        self.assert_screen_equals(reader, f"{9*"a"}\\\na")
+
+    def test_calc_screen_wrap_wide_characters(self):
+        events = code_to_events(8 * "a" + "樂")
+        reader, _ = handle_events_narrow_console(events)
+        self.assert_screen_equals(reader, f"{8*"a"}\\\n樂")
+
+    def test_calc_screen_wrap_three_lines(self):
+        events = code_to_events(20 * "a")
+        reader, _ = handle_events_narrow_console(events)
+        self.assert_screen_equals(reader, f"{9*"a"}\\\n{9*"a"}\\\naa")
+
+    def test_calc_screen_prompt_handling(self):
+        def prepare_reader_keep_prompts(*args, **kwargs):
+            reader = prepare_reader(*args, **kwargs)
+            del reader.get_prompt
+            reader.ps1 = ">>> "
+            reader.ps2 = ">>> "
+            reader.ps3 = "... "
+            reader.ps4 = ""
+            reader.can_colorize = False
+            reader.paste_mode = False
+            return reader
+
+        events = code_to_events("if some_condition:\nsome_function()")
+        reader, _ = handle_events_narrow_console(
+            events,
+            prepare_reader=prepare_reader_keep_prompts,
+        )
+        # fmt: off
+        self.assert_screen_equals(
+            reader,
+            (
+            ">>> if so\\\n"
+            "me_condit\\\n"
+            "ion:\n"
+            "...     s\\\n"
+            "ome_funct\\\n"
+            "ion()"
+            )
+        )
+        # fmt: on
+
+    def test_calc_screen_wrap_three_lines_mixed_character(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+           f"  {8*"a"}\n"
+           f"  {5*"樂"}"
+        )
+        # fmt: on
+
+        events = code_to_events(code)
+        reader, _ = handle_events_narrow_console(events)
+
+        # fmt: off
+        self.assert_screen_equals(reader, (
+            "def f():\n"
+           f"  {7*"a"}\\\n"
+            "a\n"
+           f"  {3*"樂"}\\\n"
+            "樂樂"
+        ))
+        # fmt: on
+
+    def test_calc_screen_backspace(self):
+        events = itertools.chain(
+            code_to_events("aaa"),
+            [
+                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
+            ],
+        )
+        reader, _ = handle_all_events(events)
+        self.assert_screen_equals(reader, "aa")
+
+    def test_calc_screen_wrap_removes_after_backspace(self):
+        events = itertools.chain(
+            code_to_events(10 * "a"),
+            [
+                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
+            ],
+        )
+        reader, _ = handle_events_narrow_console(events)
+        self.assert_screen_equals(reader, 9 * "a")
+
+    def test_calc_screen_backspace_in_second_line_after_wrap(self):
+        events = itertools.chain(
+            code_to_events(11 * "a"),
+            [
+                Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
+            ],
+        )
+        reader, _ = handle_events_narrow_console(events)
+        self.assert_screen_equals(reader, f"{9*"a"}\\\na")
+
+    def test_setpos_for_xy_simple(self):
+        events = code_to_events("11+11")
+        reader, _ = handle_all_events(events)
+        reader.setpos_from_xy(0, 0)
+        self.assertEqual(reader.pos, 0)
+
+    def test_control_characters(self):
+        code = 'flag = "🏳️‍🌈"'
+        events = code_to_events(code)
+        reader, _ = handle_all_events(events)
+        self.assert_screen_equals(reader, 'flag = "🏳️\\u200d🌈"')
+
+    def test_setpos_from_xy_multiple_lines(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+            "  return 1"
+        )
+        # fmt: on
+
+        events = code_to_events(code)
+        reader, _ = handle_all_events(events)
+        reader.setpos_from_xy(2, 1)
+        self.assertEqual(reader.pos, 13)
+
+    def test_setpos_from_xy_after_wrap(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+            "  hello"
+        )
+        # fmt: on
+
+        events = code_to_events(code)
+        reader, _ = handle_events_narrow_console(events)
+        reader.setpos_from_xy(2, 2)
+        self.assertEqual(reader.pos, 13)
+
+    def test_setpos_fromxy_in_wrapped_line(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+            "  hello"
+        )
+        # fmt: on
+
+        events = code_to_events(code)
+        reader, _ = handle_events_narrow_console(events)
+        reader.setpos_from_xy(0, 1)
+        self.assertEqual(reader.pos, 9)
+
+    def test_up_arrow_after_ctrl_r(self):
+        events = iter(
+            [
+                Event(evt="key", data="\x12", raw=bytearray(b"\x12")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+            ]
+        )
+
+        reader, _ = handle_all_events(events)
+        self.assert_screen_equals(reader, "")
+
+    def test_newline_within_block_trailing_whitespace(self):
+        # fmt: off
+        code = (
+            "def foo():\n"
+                 "a = 1\n"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                # go to the end of the first line
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
+                # new lines in-block shouldn't terminate the block
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                # end of line 2
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
+                # a double new line in-block should terminate the block
+                # even if its followed by whitespace
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+                Event(evt="key", data="\n", raw=bytearray(b"\n")),
+            ],
+        )
+
+        no_paste_reader = functools.partial(prepare_reader, paste_mode=False)
+        reader, _ = handle_all_events(events, prepare_reader=no_paste_reader)
+
+        expected = (
+            "def foo():\n"
+            "    \n"
+            "    \n"
+            "    a = 1\n"
+            "    \n"
+            "    "    # HistoricalReader will trim trailing whitespace
+        )
+        self.assert_screen_equals(reader, expected)
+        self.assertTrue(reader.finished)
+
+    def test_input_hook_is_called_if_set(self):
+        input_hook = MagicMock()
+        def _prepare_console(events):
+            console = MagicMock()
+            console.get_event.side_effect = events
+            console.height = 100
+            console.width = 80
+            console.input_hook = input_hook
+            return console
+
+        events = code_to_events("a")
+        reader, _ = handle_all_events(events, prepare_console=_prepare_console)
+
+        self.assertEqual(len(input_hook.mock_calls), 4)
+
+    def test_keyboard_interrupt_clears_screen(self):
+        namespace = {"itertools": itertools}
+        code = "import itertools\nitertools."
+        events = itertools.chain(code_to_events(code), [
+            Event(evt='key', data='\t', raw=bytearray(b'\t')),  # Two tabs for completion
+            Event(evt='key', data='\t', raw=bytearray(b'\t')),
+            Event(evt='key', data='\x03', raw=bytearray(b'\x03')),  # Ctrl-C
+        ])
+
+        completing_reader = functools.partial(
+            prepare_reader,
+            readline_completer=rlcompleter.Completer(namespace).complete
+        )
+        reader, _ = handle_all_events(events, prepare_reader=completing_reader)
+        self.assertEqual(reader.calc_screen(), code.split("\n"))
+
+    def test_prompt_length(self):
+        # Handles simple ASCII prompt
+        ps1 = ">>> "
+        prompt, l = Reader.process_prompt(ps1)
+        self.assertEqual(prompt, ps1)
+        self.assertEqual(l, 4)
+
+        # Handles ANSI escape sequences
+        ps1 = "\033[0;32m>>> \033[0m"
+        prompt, l = Reader.process_prompt(ps1)
+        self.assertEqual(prompt, "\033[0;32m>>> \033[0m")
+        self.assertEqual(l, 4)
+
+        # Handles ANSI escape sequences bracketed in \001 .. \002
+        ps1 = "\001\033[0;32m\002>>> \001\033[0m\002"
+        prompt, l = Reader.process_prompt(ps1)
+        self.assertEqual(prompt, "\033[0;32m>>> \033[0m")
+        self.assertEqual(l, 4)
+
+        # Handles wide characters in prompt
+        ps1 = "樂>> "
+        prompt, l = Reader.process_prompt(ps1)
+        self.assertEqual(prompt, ps1)
+        self.assertEqual(l, 5)
+
+        # Handles wide characters AND ANSI sequences together
+        ps1 = "\001\033[0;32m\002樂>\001\033[0m\002> "
+        prompt, l = Reader.process_prompt(ps1)
+        self.assertEqual(prompt, "\033[0;32m樂>\033[0m> ")
+        self.assertEqual(l, 5)
+
+    def test_completions_updated_on_key_press(self):
+        namespace = {"itertools": itertools}
+        code = "itertools."
+        events = itertools.chain(code_to_events(code), [
+            Event(evt='key', data='\t', raw=bytearray(b'\t')),  # Two tabs for completion
+            Event(evt='key', data='\t', raw=bytearray(b'\t')),
+        ], code_to_events("a"))
+
+        completing_reader = functools.partial(
+            prepare_reader,
+            readline_completer=rlcompleter.Completer(namespace).complete
+        )
+        reader, _ = handle_all_events(events, prepare_reader=completing_reader)
+
+        actual = reader.screen
+        self.assertEqual(len(actual), 2)
+        self.assertEqual(actual[0], f"{code}a")
+        self.assertEqual(actual[1].rstrip(), "itertools.accumulate(")
+
+    def test_key_press_on_tab_press_once(self):
+        namespace = {"itertools": itertools}
+        code = "itertools."
+        events = itertools.chain(code_to_events(code), [
+            Event(evt='key', data='\t', raw=bytearray(b'\t')),
+        ], code_to_events("a"))
+
+        completing_reader = functools.partial(
+            prepare_reader,
+            readline_completer=rlcompleter.Completer(namespace).complete
+        )
+        reader, _ = handle_all_events(events, prepare_reader=completing_reader)
+
+        self.assert_screen_equals(reader, f"{code}a")
+
+    def test_pos2xy_with_no_columns(self):
+        console = prepare_console([])
+        reader = prepare_reader(console)
+        # Simulate a resize to 0 columns
+        reader.screeninfo = []
+        self.assertEqual(reader.pos2xy(), (0, 0))
diff --git a/Lib/test/test_pyrepl/test_unix_console.py b/Lib/test/test_pyrepl/test_unix_console.py
new file mode 100644
index 00000000000000..15dbf48bcf0f1c
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_unix_console.py
@@ -0,0 +1,327 @@
+import itertools
+import os
+import sys
+import unittest
+from functools import partial
+from test.support import os_helper
+from unittest import TestCase
+from unittest.mock import MagicMock, call, patch, ANY
+
+from .support import handle_all_events, code_to_events
+
+try:
+    from _pyrepl.console import Event
+    from _pyrepl.unix_console import UnixConsole
+except ImportError:
+    pass
+
+
+def unix_console(events, **kwargs):
+    console = UnixConsole()
+    console.get_event = MagicMock(side_effect=events)
+
+    height = kwargs.get("height", 25)
+    width = kwargs.get("width", 80)
+    console.getheightwidth = MagicMock(side_effect=lambda: (height, width))
+
+    console.prepare()
+    for key, val in kwargs.items():
+        setattr(console, key, val)
+    return console
+
+
+handle_events_unix_console = partial(
+    handle_all_events,
+    prepare_console=partial(unix_console),
+)
+handle_events_narrow_unix_console = partial(
+    handle_all_events,
+    prepare_console=partial(unix_console, width=5),
+)
+handle_events_short_unix_console = partial(
+    handle_all_events,
+    prepare_console=partial(unix_console, height=1),
+)
+handle_events_unix_console_height_3 = partial(
+    handle_all_events, prepare_console=partial(unix_console, height=3)
+)
+
+
+TERM_CAPABILITIES = {
+    "bel": b"\x07",
+    "civis": b"\x1b[?25l",
+    "clear": b"\x1b[H\x1b[2J",
+    "cnorm": b"\x1b[?12l\x1b[?25h",
+    "cub": b"\x1b[%p1%dD",
+    "cub1": b"\x08",
+    "cud": b"\x1b[%p1%dB",
+    "cud1": b"\n",
+    "cuf": b"\x1b[%p1%dC",
+    "cuf1": b"\x1b[C",
+    "cup": b"\x1b[%i%p1%d;%p2%dH",
+    "cuu": b"\x1b[%p1%dA",
+    "cuu1": b"\x1b[A",
+    "dch1": b"\x1b[P",
+    "dch": b"\x1b[%p1%dP",
+    "el": b"\x1b[K",
+    "hpa": b"\x1b[%i%p1%dG",
+    "ich": b"\x1b[%p1%d@",
+    "ich1": None,
+    "ind": b"\n",
+    "pad": None,
+    "ri": b"\x1bM",
+    "rmkx": b"\x1b[?1l\x1b>",
+    "smkx": b"\x1b[?1h\x1b=",
+}
+
+
+@unittest.skipIf(sys.platform == "win32", "No Unix event queue on Windows")
+@patch("_pyrepl.curses.tigetstr", lambda s: TERM_CAPABILITIES.get(s))
+@patch(
+    "_pyrepl.curses.tparm",
+    lambda s, *args: s + b":" + b",".join(str(i).encode() for i in args),
+)
+@patch("_pyrepl.curses.setupterm", lambda a, b: None)
+@patch(
+    "termios.tcgetattr",
+    lambda _: [
+        27394,
+        3,
+        19200,
+        536872399,
+        38400,
+        38400,
+        [
+            b"\x04",
+            b"\xff",
+            b"\xff",
+            b"\x7f",
+            b"\x17",
+            b"\x15",
+            b"\x12",
+            b"\x00",
+            b"\x03",
+            b"\x1c",
+            b"\x1a",
+            b"\x19",
+            b"\x11",
+            b"\x13",
+            b"\x16",
+            b"\x0f",
+            b"\x01",
+            b"\x00",
+            b"\x14",
+            b"\x00",
+        ],
+    ],
+)
+@patch("termios.tcsetattr", lambda a, b, c: None)
+@patch("os.write")
+class TestConsole(TestCase):
+    def test_simple_addition(self, _os_write):
+        code = "12+34"
+        events = code_to_events(code)
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, b"1")
+        _os_write.assert_any_call(ANY, b"2")
+        _os_write.assert_any_call(ANY, b"+")
+        _os_write.assert_any_call(ANY, b"3")
+        _os_write.assert_any_call(ANY, b"4")
+        con.restore()
+
+    def test_wrap(self, _os_write):
+        code = "12+34"
+        events = code_to_events(code)
+        _, con = handle_events_narrow_unix_console(events)
+        _os_write.assert_any_call(ANY, b"1")
+        _os_write.assert_any_call(ANY, b"2")
+        _os_write.assert_any_call(ANY, b"+")
+        _os_write.assert_any_call(ANY, b"3")
+        _os_write.assert_any_call(ANY, b"\\")
+        _os_write.assert_any_call(ANY, b"\n")
+        _os_write.assert_any_call(ANY, b"4")
+        con.restore()
+
+    def test_cursor_left(self, _os_write):
+        code = "1"
+        events = itertools.chain(
+            code_to_events(code),
+            [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
+        )
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cub"] + b":1")
+        con.restore()
+
+    def test_cursor_left_right(self, _os_write):
+        code = "1"
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
+            ],
+        )
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cub"] + b":1")
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cuf"] + b":1")
+        con.restore()
+
+    def test_cursor_up(self, _os_write):
+        code = "1\n2+3"
+        events = itertools.chain(
+            code_to_events(code),
+            [Event(evt="key", data="up", raw=bytearray(b"\x1bOA"))],
+        )
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cuu"] + b":1")
+        con.restore()
+
+    def test_cursor_up_down(self, _os_write):
+        code = "1\n2+3"
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cuu"] + b":1")
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cud"] + b":1")
+        con.restore()
+
+    def test_cursor_back_write(self, _os_write):
+        events = itertools.chain(
+            code_to_events("1"),
+            [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
+            code_to_events("2"),
+        )
+        _, con = handle_events_unix_console(events)
+        _os_write.assert_any_call(ANY, b"1")
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["cub"] + b":1")
+        _os_write.assert_any_call(ANY, b"2")
+        con.restore()
+
+    def test_multiline_function_move_up_short_terminal(self, _os_write):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="scroll", data=None),
+            ],
+        )
+        _, con = handle_events_short_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["ri"] + b":")
+        con.restore()
+
+    def test_multiline_function_move_up_down_short_terminal(self, _os_write):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="scroll", data=None),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="scroll", data=None),
+            ],
+        )
+        _, con = handle_events_short_unix_console(events)
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["ri"] + b":")
+        _os_write.assert_any_call(ANY, TERM_CAPABILITIES["ind"] + b":")
+        con.restore()
+
+    def test_resize_bigger_on_multiline_function(self, _os_write):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(code_to_events(code))
+        reader, console = handle_events_short_unix_console(events)
+
+        console.height = 2
+        console.getheightwidth = MagicMock(lambda _: (2, 80))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+        _os_write.assert_has_calls(
+            [
+                call(ANY, TERM_CAPABILITIES["ri"] + b":"),
+                call(ANY, TERM_CAPABILITIES["cup"] + b":0,0"),
+                call(ANY, b"def f():"),
+            ]
+        )
+        console.restore()
+        con.restore()
+
+    def test_resize_smaller_on_multiline_function(self, _os_write):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(code_to_events(code))
+        reader, console = handle_events_unix_console_height_3(events)
+
+        console.height = 1
+        console.getheightwidth = MagicMock(lambda _: (1, 80))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+        _os_write.assert_has_calls(
+            [
+                call(ANY, TERM_CAPABILITIES["ind"] + b":"),
+                call(ANY, TERM_CAPABILITIES["cup"] + b":0,0"),
+                call(ANY, b"  foo"),
+            ]
+        )
+        console.restore()
+        con.restore()
+
+    def test_getheightwidth_with_invalid_environ(self, _os_write):
+        # gh-128636
+        console = UnixConsole()
+        with os_helper.EnvironmentVarGuard() as env:
+            env["LINES"] = ""
+            self.assertIsInstance(console.getheightwidth(), tuple)
+            env["COLUMNS"] = ""
+            self.assertIsInstance(console.getheightwidth(), tuple)
+            os.environ = []
+            self.assertIsInstance(console.getheightwidth(), tuple)
diff --git a/Lib/test/test_pyrepl/test_unix_eventqueue.py b/Lib/test/test_pyrepl/test_unix_eventqueue.py
new file mode 100644
index 00000000000000..301f79927a741f
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_unix_eventqueue.py
@@ -0,0 +1,117 @@
+import tempfile
+import unittest
+import sys
+from unittest.mock import patch
+
+try:
+    from _pyrepl.console import Event
+    from _pyrepl.unix_eventqueue import EventQueue
+except ImportError:
+    pass
+
+@unittest.skipIf(sys.platform == "win32", "No Unix event queue on Windows")
+@patch("_pyrepl.curses.tigetstr", lambda x: b"")
+class TestUnixEventQueue(unittest.TestCase):
+    def setUp(self):
+        self.file = tempfile.TemporaryFile()
+
+    def tearDown(self) -> None:
+        self.file.close()
+
+    def test_get(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        event = Event("key", "a", b"a")
+        eq.insert(event)
+        self.assertEqual(eq.get(), event)
+
+    def test_empty(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        self.assertTrue(eq.empty())
+        eq.insert(Event("key", "a", b"a"))
+        self.assertFalse(eq.empty())
+
+    def test_flush_buf(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.buf.extend(b"test")
+        self.assertEqual(eq.flush_buf(), b"test")
+        self.assertEqual(eq.buf, bytearray())
+
+    def test_insert(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        event = Event("key", "a", b"a")
+        eq.insert(event)
+        self.assertEqual(eq.events[0], event)
+
+    @patch("_pyrepl.unix_eventqueue.keymap")
+    def test_push_with_key_in_keymap(self, mock_keymap):
+        mock_keymap.compile_keymap.return_value = {"a": "b"}
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {b"a": "b"}
+        eq.push("a")
+        mock_keymap.compile_keymap.assert_called()
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "b")
+
+    @patch("_pyrepl.unix_eventqueue.keymap")
+    def test_push_without_key_in_keymap(self, mock_keymap):
+        mock_keymap.compile_keymap.return_value = {"a": "b"}
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {b"c": "d"}
+        eq.push("a")
+        mock_keymap.compile_keymap.assert_called()
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "a")
+
+    @patch("_pyrepl.unix_eventqueue.keymap")
+    def test_push_with_keymap_in_keymap(self, mock_keymap):
+        mock_keymap.compile_keymap.return_value = {"a": "b"}
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {b"a": {b"b": "c"}}
+        eq.push("a")
+        mock_keymap.compile_keymap.assert_called()
+        self.assertTrue(eq.empty())
+        eq.push("b")
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "c")
+        eq.push("d")
+        self.assertEqual(eq.events[1].evt, "key")
+        self.assertEqual(eq.events[1].data, "d")
+
+    @patch("_pyrepl.unix_eventqueue.keymap")
+    def test_push_with_keymap_in_keymap_and_escape(self, mock_keymap):
+        mock_keymap.compile_keymap.return_value = {"a": "b"}
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {b"a": {b"b": "c"}}
+        eq.push("a")
+        mock_keymap.compile_keymap.assert_called()
+        self.assertTrue(eq.empty())
+        eq.flush_buf()
+        eq.push("\033")
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "\033")
+        eq.push("b")
+        self.assertEqual(eq.events[1].evt, "key")
+        self.assertEqual(eq.events[1].data, "b")
+
+    def test_push_special_key(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {}
+        eq.push("\x1b")
+        eq.push("[")
+        eq.push("A")
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "\x1b")
+
+    def test_push_unrecognized_escape_sequence(self):
+        eq = EventQueue(self.file.fileno(), "utf-8")
+        eq.keymap = {}
+        eq.push("\x1b")
+        eq.push("[")
+        eq.push("Z")
+        self.assertEqual(len(eq.events), 3)
+        self.assertEqual(eq.events[0].evt, "key")
+        self.assertEqual(eq.events[0].data, "\x1b")
+        self.assertEqual(eq.events[1].evt, "key")
+        self.assertEqual(eq.events[1].data, "[")
+        self.assertEqual(eq.events[2].evt, "key")
+        self.assertEqual(eq.events[2].data, "Z")
diff --git a/Lib/test/test_pyrepl/test_windows_console.py b/Lib/test/test_pyrepl/test_windows_console.py
new file mode 100644
index 00000000000000..07eaccd1124cd6
--- /dev/null
+++ b/Lib/test/test_pyrepl/test_windows_console.py
@@ -0,0 +1,348 @@
+import sys
+import unittest
+
+if sys.platform != "win32":
+    raise unittest.SkipTest("test only relevant on win32")
+
+
+import itertools
+from functools import partial
+from typing import Iterable
+from unittest import TestCase
+from unittest.mock import MagicMock, call
+
+from .support import handle_all_events, code_to_events
+
+try:
+    from _pyrepl.console import Event, Console
+    from _pyrepl.windows_console import (
+        WindowsConsole,
+        MOVE_LEFT,
+        MOVE_RIGHT,
+        MOVE_UP,
+        MOVE_DOWN,
+        ERASE_IN_LINE,
+    )
+except ImportError:
+    pass
+
+
+class WindowsConsoleTests(TestCase):
+    def console(self, events, **kwargs) -> Console:
+        console = WindowsConsole()
+        console.get_event = MagicMock(side_effect=events)
+        console._scroll = MagicMock()
+        console._hide_cursor = MagicMock()
+        console._show_cursor = MagicMock()
+        console._getscrollbacksize = MagicMock(42)
+        console.out = MagicMock()
+
+        height = kwargs.get("height", 25)
+        width = kwargs.get("width", 80)
+        console.getheightwidth = MagicMock(side_effect=lambda: (height, width))
+
+        console.prepare()
+        for key, val in kwargs.items():
+            setattr(console, key, val)
+        return console
+
+    def handle_events(self, events: Iterable[Event], **kwargs):
+        return handle_all_events(events, partial(self.console, **kwargs))
+
+    def handle_events_narrow(self, events):
+        return self.handle_events(events, width=5)
+
+    def handle_events_short(self, events):
+        return self.handle_events(events, height=1)
+
+    def handle_events_height_3(self, events):
+        return self.handle_events(events, height=3)
+
+    def test_simple_addition(self):
+        code = "12+34"
+        events = code_to_events(code)
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(b"1")
+        con.out.write.assert_any_call(b"2")
+        con.out.write.assert_any_call(b"+")
+        con.out.write.assert_any_call(b"3")
+        con.out.write.assert_any_call(b"4")
+        con.restore()
+
+    def test_wrap(self):
+        code = "12+34"
+        events = code_to_events(code)
+        _, con = self.handle_events_narrow(events)
+        con.out.write.assert_any_call(b"1")
+        con.out.write.assert_any_call(b"2")
+        con.out.write.assert_any_call(b"+")
+        con.out.write.assert_any_call(b"3")
+        con.out.write.assert_any_call(b"\\")
+        con.out.write.assert_any_call(b"\n")
+        con.out.write.assert_any_call(b"4")
+        con.restore()
+
+    def test_resize_wider(self):
+        code = "1234567890"
+        events = code_to_events(code)
+        reader, console = self.handle_events_narrow(events)
+
+        console.height = 20
+        console.width = 80
+        console.getheightwidth = MagicMock(lambda _: (20, 80))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+
+        con.out.write.assert_any_call(self.move_right(2))
+        con.out.write.assert_any_call(self.move_up(2))
+        con.out.write.assert_any_call(b"567890")
+
+        con.restore()
+
+    def test_resize_narrower(self):
+        code = "1234567890"
+        events = code_to_events(code)
+        reader, console = self.handle_events(events)
+
+        console.height = 20
+        console.width = 4
+        console.getheightwidth = MagicMock(lambda _: (20, 4))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+
+        con.out.write.assert_any_call(b"456\\")
+        con.out.write.assert_any_call(b"789\\")
+
+        con.restore()
+
+    def test_cursor_left(self):
+        code = "1"
+        events = itertools.chain(
+            code_to_events(code),
+            [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
+        )
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(self.move_left())
+        con.restore()
+
+    def test_cursor_left_right(self):
+        code = "1"
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="left", raw=bytearray(b"\x1bOD")),
+                Event(evt="key", data="right", raw=bytearray(b"\x1bOC")),
+            ],
+        )
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(self.move_left())
+        con.out.write.assert_any_call(self.move_right())
+        con.restore()
+
+    def test_cursor_up(self):
+        code = "1\n2+3"
+        events = itertools.chain(
+            code_to_events(code),
+            [Event(evt="key", data="up", raw=bytearray(b"\x1bOA"))],
+        )
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(self.move_up())
+        con.restore()
+
+    def test_cursor_up_down(self):
+        code = "1\n2+3"
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+            ],
+        )
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(self.move_up())
+        con.out.write.assert_any_call(self.move_down())
+        con.restore()
+
+    def test_cursor_back_write(self):
+        events = itertools.chain(
+            code_to_events("1"),
+            [Event(evt="key", data="left", raw=bytearray(b"\x1bOD"))],
+            code_to_events("2"),
+        )
+        _, con = self.handle_events(events)
+        con.out.write.assert_any_call(b"1")
+        con.out.write.assert_any_call(self.move_left())
+        con.out.write.assert_any_call(b"21")
+        con.restore()
+
+    def test_multiline_function_move_up_short_terminal(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="scroll", data=None),
+            ],
+        )
+        _, con = self.handle_events_short(events)
+        con.out.write.assert_any_call(self.move_left(5))
+        con.out.write.assert_any_call(self.move_up())
+        con.restore()
+
+    def test_multiline_function_move_up_down_short_terminal(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
+                Event(evt="scroll", data=None),
+                Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
+                Event(evt="scroll", data=None),
+            ],
+        )
+        _, con = self.handle_events_short(events)
+        con.out.write.assert_any_call(self.move_left(8))
+        con.out.write.assert_any_call(self.erase_in_line())
+        con.restore()
+
+    def test_resize_bigger_on_multiline_function(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(code_to_events(code))
+        reader, console = self.handle_events_short(events)
+
+        console.height = 2
+        console.getheightwidth = MagicMock(lambda _: (2, 80))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+        con.out.write.assert_has_calls(
+            [
+                call(self.move_left(5)),
+                call(self.move_up()),
+                call(b"def f():"),
+                call(self.move_left(3)),
+                call(self.move_down()),
+            ]
+        )
+        console.restore()
+        con.restore()
+
+    def test_resize_smaller_on_multiline_function(self):
+        # fmt: off
+        code = (
+            "def f():\n"
+            "  foo"
+        )
+        # fmt: on
+
+        events = itertools.chain(code_to_events(code))
+        reader, console = self.handle_events_height_3(events)
+
+        console.height = 1
+        console.getheightwidth = MagicMock(lambda _: (1, 80))
+
+        def same_reader(_):
+            return reader
+
+        def same_console(events):
+            console.get_event = MagicMock(side_effect=events)
+            return console
+
+        _, con = handle_all_events(
+            [Event(evt="resize", data=None)],
+            prepare_reader=same_reader,
+            prepare_console=same_console,
+        )
+        con.out.write.assert_has_calls(
+            [
+                call(self.move_left(5)),
+                call(self.move_up()),
+                call(self.erase_in_line()),
+                call(b"  foo"),
+            ]
+        )
+        console.restore()
+        con.restore()
+
+    def move_up(self, lines=1):
+        return MOVE_UP.format(lines).encode("utf8")
+
+    def move_down(self, lines=1):
+        return MOVE_DOWN.format(lines).encode("utf8")
+
+    def move_left(self, cols=1):
+        return MOVE_LEFT.format(cols).encode("utf8")
+
+    def move_right(self, cols=1):
+        return MOVE_RIGHT.format(cols).encode("utf8")
+
+    def erase_in_line(self):
+        return ERASE_IN_LINE.encode("utf8")
+
+    def test_multiline_ctrl_z(self):
+        # see gh-126332
+        code = "abcdefghi"
+
+        events = itertools.chain(
+            code_to_events(code),
+            [
+                Event(evt="key", data='\x1a', raw=bytearray(b'\x1a')),
+                Event(evt="key", data='\x1a', raw=bytearray(b'\x1a')),
+            ],
+        )
+        reader, _ = self.handle_events_narrow(events)
+        self.assertEqual(reader.cxy, (2, 3))
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_queue.py b/Lib/test/test_queue.py
index d5927fbf39142b..93cbe1fe230b4f 100644
--- a/Lib/test/test_queue.py
+++ b/Lib/test/test_queue.py
@@ -486,7 +486,7 @@ def _shutdown_get(self, immediate):
         else:
             thrds = (
                 # on shutdown(immediate=False)
-                # one of these threads shoud raise Shutdown
+                # one of these threads should raise Shutdown
                 (self._get, (q, go, results)),
                 (self._get, (q, go, results)),
                 (self._get, (q, go, results)),
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py
index 9a44ab1768656a..51f9193b269eee 100644
--- a/Lib/test/test_random.py
+++ b/Lib/test/test_random.py
@@ -1433,8 +1433,8 @@ def test_main(self):
             ("'a a' 'b b' 'c c'", "b b"),
             ("--integer 5", 4),
             ("5", 4),
-            ("--float 2.5", 2.266632777287572),
-            ("2.5", 2.266632777287572),
+            ("--float 2.5", 2.1110546288126204),
+            ("2.5", 2.1110546288126204),
         ]:
             random.seed(0)
             self.assertEqual(random.main(shlex.split(command)), expected)
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index b8b50e8b3c2190..813cb4a3f54f23 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -884,31 +884,137 @@ def test_named_unicode_escapes(self):
         self.checkPatternError(br'\N{LESS-THAN SIGN}', r'bad escape \N', 0)
         self.checkPatternError(br'[\N{LESS-THAN SIGN}]', r'bad escape \N', 1)
 
-    def test_string_boundaries(self):
+    def test_word_boundaries(self):
         # See http://bugs.python.org/issue10713
-        self.assertEqual(re.search(r"\b(abc)\b", "abc").group(1),
-                         "abc")
+        self.assertEqual(re.search(r"\b(abc)\b", "abc").group(1), "abc")
+        self.assertEqual(re.search(r"\b(abc)\b", "abc", re.ASCII).group(1), "abc")
+        self.assertEqual(re.search(br"\b(abc)\b", b"abc").group(1), b"abc")
+        self.assertEqual(re.search(br"\b(abc)\b", b"abc", re.LOCALE).group(1), b"abc")
+        self.assertEqual(re.search(r"\b(ьюя)\b", "ьюя").group(1), "ьюя")
+        self.assertIsNone(re.search(r"\b(ьюя)\b", "ьюя", re.ASCII))
+        # There's a word boundary between a word and a non-word.
+        self.assertTrue(re.match(r".\b", "a="))
+        self.assertTrue(re.match(r".\b", "a=", re.ASCII))
+        self.assertTrue(re.match(br".\b", b"a="))
+        self.assertTrue(re.match(br".\b", b"a=", re.LOCALE))
+        self.assertTrue(re.match(r".\b", "я="))
+        self.assertIsNone(re.match(r".\b", "я=", re.ASCII))
+        # There's a word boundary between a non-word and a word.
+        self.assertTrue(re.match(r".\b", "=a"))
+        self.assertTrue(re.match(r".\b", "=a", re.ASCII))
+        self.assertTrue(re.match(br".\b", b"=a"))
+        self.assertTrue(re.match(br".\b", b"=a", re.LOCALE))
+        self.assertTrue(re.match(r".\b", "=я"))
+        self.assertIsNone(re.match(r".\b", "=я", re.ASCII))
+        # There is no word boundary inside a word.
+        self.assertIsNone(re.match(r".\b", "ab"))
+        self.assertIsNone(re.match(r".\b", "ab", re.ASCII))
+        self.assertIsNone(re.match(br".\b", b"ab"))
+        self.assertIsNone(re.match(br".\b", b"ab", re.LOCALE))
+        self.assertIsNone(re.match(r".\b", "юя"))
+        self.assertIsNone(re.match(r".\b", "юя", re.ASCII))
+        # There is no word boundary between a non-word characters.
+        self.assertIsNone(re.match(r".\b", "=-"))
+        self.assertIsNone(re.match(r".\b", "=-", re.ASCII))
+        self.assertIsNone(re.match(br".\b", b"=-"))
+        self.assertIsNone(re.match(br".\b", b"=-", re.LOCALE))
+        # There is no non-boundary match between a word and a non-word.
+        self.assertIsNone(re.match(r".\B", "a="))
+        self.assertIsNone(re.match(r".\B", "a=", re.ASCII))
+        self.assertIsNone(re.match(br".\B", b"a="))
+        self.assertIsNone(re.match(br".\B", b"a=", re.LOCALE))
+        self.assertIsNone(re.match(r".\B", "я="))
+        self.assertTrue(re.match(r".\B", "я=", re.ASCII))
+        # There is no non-boundary match between a non-word and a word.
+        self.assertIsNone(re.match(r".\B", "=a"))
+        self.assertIsNone(re.match(r".\B", "=a", re.ASCII))
+        self.assertIsNone(re.match(br".\B", b"=a"))
+        self.assertIsNone(re.match(br".\B", b"=a", re.LOCALE))
+        self.assertIsNone(re.match(r".\B", "=я"))
+        self.assertTrue(re.match(r".\B", "=я", re.ASCII))
+        # There's a non-boundary match inside a word.
+        self.assertTrue(re.match(r".\B", "ab"))
+        self.assertTrue(re.match(r".\B", "ab", re.ASCII))
+        self.assertTrue(re.match(br".\B", b"ab"))
+        self.assertTrue(re.match(br".\B", b"ab", re.LOCALE))
+        self.assertTrue(re.match(r".\B", "юя"))
+        self.assertTrue(re.match(r".\B", "юя", re.ASCII))
+        # There's a non-boundary match between a non-word characters.
+        self.assertTrue(re.match(r".\B", "=-"))
+        self.assertTrue(re.match(r".\B", "=-", re.ASCII))
+        self.assertTrue(re.match(br".\B", b"=-"))
+        self.assertTrue(re.match(br".\B", b"=-", re.LOCALE))
         # There's a word boundary at the start of a string.
         self.assertTrue(re.match(r"\b", "abc"))
+        self.assertTrue(re.match(r"\b", "abc", re.ASCII))
+        self.assertTrue(re.match(br"\b", b"abc"))
+        self.assertTrue(re.match(br"\b", b"abc", re.LOCALE))
+        self.assertTrue(re.match(r"\b", "ьюя"))
+        self.assertIsNone(re.match(r"\b", "ьюя", re.ASCII))
+        # There's a word boundary at the end of a string.
+        self.assertTrue(re.fullmatch(r".+\b", "abc"))
+        self.assertTrue(re.fullmatch(r".+\b", "abc", re.ASCII))
+        self.assertTrue(re.fullmatch(br".+\b", b"abc"))
+        self.assertTrue(re.fullmatch(br".+\b", b"abc", re.LOCALE))
+        self.assertTrue(re.fullmatch(r".+\b", "ьюя"))
+        self.assertIsNone(re.search(r"\b", "ьюя", re.ASCII))
         # A non-empty string includes a non-boundary zero-length match.
-        self.assertTrue(re.search(r"\B", "abc"))
+        self.assertEqual(re.search(r"\B", "abc").span(), (1, 1))
+        self.assertEqual(re.search(r"\B", "abc", re.ASCII).span(), (1, 1))
+        self.assertEqual(re.search(br"\B", b"abc").span(), (1, 1))
+        self.assertEqual(re.search(br"\B", b"abc", re.LOCALE).span(), (1, 1))
+        self.assertEqual(re.search(r"\B", "ьюя").span(), (1, 1))
+        self.assertEqual(re.search(r"\B", "ьюя", re.ASCII).span(), (0, 0))
         # There is no non-boundary match at the start of a string.
-        self.assertFalse(re.match(r"\B", "abc"))
+        self.assertIsNone(re.match(r"\B", "abc"))
+        self.assertIsNone(re.match(r"\B", "abc", re.ASCII))
+        self.assertIsNone(re.match(br"\B", b"abc"))
+        self.assertIsNone(re.match(br"\B", b"abc", re.LOCALE))
+        self.assertIsNone(re.match(r"\B", "ьюя"))
+        self.assertTrue(re.match(r"\B", "ьюя", re.ASCII))
+        # There is no non-boundary match at the end of a string.
+        self.assertIsNone(re.fullmatch(r".+\B", "abc"))
+        self.assertIsNone(re.fullmatch(r".+\B", "abc", re.ASCII))
+        self.assertIsNone(re.fullmatch(br".+\B", b"abc"))
+        self.assertIsNone(re.fullmatch(br".+\B", b"abc", re.LOCALE))
+        self.assertIsNone(re.fullmatch(r".+\B", "ьюя"))
+        self.assertTrue(re.fullmatch(r".+\B", "ьюя", re.ASCII))
         # However, an empty string contains no word boundaries, and also no
         # non-boundaries.
-        self.assertIsNone(re.search(r"\B", ""))
+        self.assertIsNone(re.search(r"\b", ""))
+        self.assertIsNone(re.search(r"\b", "", re.ASCII))
+        self.assertIsNone(re.search(br"\b", b""))
+        self.assertIsNone(re.search(br"\b", b"", re.LOCALE))
         # This one is questionable and different from the perlre behaviour,
         # but describes current behavior.
-        self.assertIsNone(re.search(r"\b", ""))
+        self.assertIsNone(re.search(r"\B", ""))
+        self.assertIsNone(re.search(r"\B", "", re.ASCII))
+        self.assertIsNone(re.search(br"\B", b""))
+        self.assertIsNone(re.search(br"\B", b"", re.LOCALE))
         # A single word-character string has two boundaries, but no
         # non-boundary gaps.
         self.assertEqual(len(re.findall(r"\b", "a")), 2)
+        self.assertEqual(len(re.findall(r"\b", "a", re.ASCII)), 2)
+        self.assertEqual(len(re.findall(br"\b", b"a")), 2)
+        self.assertEqual(len(re.findall(br"\b", b"a", re.LOCALE)), 2)
         self.assertEqual(len(re.findall(r"\B", "a")), 0)
+        self.assertEqual(len(re.findall(r"\B", "a", re.ASCII)), 0)
+        self.assertEqual(len(re.findall(br"\B", b"a")), 0)
+        self.assertEqual(len(re.findall(br"\B", b"a", re.LOCALE)), 0)
         # If there are no words, there are no boundaries
         self.assertEqual(len(re.findall(r"\b", " ")), 0)
+        self.assertEqual(len(re.findall(r"\b", " ", re.ASCII)), 0)
+        self.assertEqual(len(re.findall(br"\b", b" ")), 0)
+        self.assertEqual(len(re.findall(br"\b", b" ", re.LOCALE)), 0)
         self.assertEqual(len(re.findall(r"\b", "   ")), 0)
+        self.assertEqual(len(re.findall(r"\b", "   ", re.ASCII)), 0)
+        self.assertEqual(len(re.findall(br"\b", b"   ")), 0)
+        self.assertEqual(len(re.findall(br"\b", b"   ", re.LOCALE)), 0)
         # Can match around the whitespace.
         self.assertEqual(len(re.findall(r"\B", " ")), 2)
+        self.assertEqual(len(re.findall(r"\B", " ", re.ASCII)), 2)
+        self.assertEqual(len(re.findall(br"\B", b" ")), 2)
+        self.assertEqual(len(re.findall(br"\B", b" ", re.LOCALE)), 2)
 
     def test_bigcharset(self):
         self.assertEqual(re.match("([\u2222\u2223])",
@@ -1031,6 +1137,39 @@ def test_ignore_case_set(self):
         self.assertTrue(re.match(br'[19a]', b'a', re.I))
         self.assertTrue(re.match(br'[19a]', b'A', re.I))
         self.assertTrue(re.match(br'[19A]', b'a', re.I))
+        self.assertTrue(re.match(r'[19\xc7]', '\xc7', re.I))
+        self.assertTrue(re.match(r'[19\xc7]', '\xe7', re.I))
+        self.assertTrue(re.match(r'[19\xe7]', '\xc7', re.I))
+        self.assertTrue(re.match(r'[19\xe7]', '\xe7', re.I))
+        self.assertTrue(re.match(r'[19\u0400]', '\u0400', re.I))
+        self.assertTrue(re.match(r'[19\u0400]', '\u0450', re.I))
+        self.assertTrue(re.match(r'[19\u0450]', '\u0400', re.I))
+        self.assertTrue(re.match(r'[19\u0450]', '\u0450', re.I))
+        self.assertTrue(re.match(r'[19\U00010400]', '\U00010400', re.I))
+        self.assertTrue(re.match(r'[19\U00010400]', '\U00010428', re.I))
+        self.assertTrue(re.match(r'[19\U00010428]', '\U00010400', re.I))
+        self.assertTrue(re.match(r'[19\U00010428]', '\U00010428', re.I))
+
+        self.assertTrue(re.match(br'[19A]', b'A', re.I))
+        self.assertTrue(re.match(br'[19a]', b'a', re.I))
+        self.assertTrue(re.match(br'[19a]', b'A', re.I))
+        self.assertTrue(re.match(br'[19A]', b'a', re.I))
+        self.assertTrue(re.match(r'[19A]', 'A', re.I|re.A))
+        self.assertTrue(re.match(r'[19a]', 'a', re.I|re.A))
+        self.assertTrue(re.match(r'[19a]', 'A', re.I|re.A))
+        self.assertTrue(re.match(r'[19A]', 'a', re.I|re.A))
+        self.assertTrue(re.match(r'[19\xc7]', '\xc7', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\xc7]', '\xe7', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\xe7]', '\xc7', re.I|re.A))
+        self.assertTrue(re.match(r'[19\xe7]', '\xe7', re.I|re.A))
+        self.assertTrue(re.match(r'[19\u0400]', '\u0400', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\u0400]', '\u0450', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\u0450]', '\u0400', re.I|re.A))
+        self.assertTrue(re.match(r'[19\u0450]', '\u0450', re.I|re.A))
+        self.assertTrue(re.match(r'[19\U00010400]', '\U00010400', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\U00010400]', '\U00010428', re.I|re.A))
+        self.assertIsNone(re.match(r'[19\U00010428]', '\U00010400', re.I|re.A))
+        self.assertTrue(re.match(r'[19\U00010428]', '\U00010428', re.I|re.A))
 
         # Two different characters have the same lowercase.
         assert 'K'.lower() == '\u212a'.lower() == 'k' # 'K'
@@ -1067,8 +1206,10 @@ def test_ignore_case_range(self):
         self.assertTrue(re.match(br'[9-a]', b'_', re.I))
         self.assertIsNone(re.match(br'[9-A]', b'_', re.I))
         self.assertTrue(re.match(r'[\xc0-\xde]', '\xd7', re.I))
+        self.assertTrue(re.match(r'[\xc0-\xde]', '\xe7', re.I))
         self.assertIsNone(re.match(r'[\xc0-\xde]', '\xf7', re.I))
         self.assertTrue(re.match(r'[\xe0-\xfe]', '\xf7', re.I))
+        self.assertTrue(re.match(r'[\xe0-\xfe]', '\xc7', re.I))
         self.assertIsNone(re.match(r'[\xe0-\xfe]', '\xd7', re.I))
         self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0450', re.I))
         self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0400', re.I))
@@ -1079,6 +1220,26 @@ def test_ignore_case_range(self):
         self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010428', re.I))
         self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010400', re.I))
 
+        self.assertTrue(re.match(r'[\xc0-\xde]', '\xd7', re.I|re.A))
+        self.assertIsNone(re.match(r'[\xc0-\xde]', '\xe7', re.I|re.A))
+        self.assertTrue(re.match(r'[\xe0-\xfe]', '\xf7', re.I|re.A))
+        self.assertIsNone(re.match(r'[\xe0-\xfe]', '\xc7', re.I|re.A))
+        self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0450', re.I|re.A))
+        self.assertIsNone(re.match(r'[\u0430-\u045f]', '\u0400', re.I|re.A))
+        self.assertIsNone(re.match(r'[\u0400-\u042f]', '\u0450', re.I|re.A))
+        self.assertTrue(re.match(r'[\u0400-\u042f]', '\u0400', re.I|re.A))
+        self.assertTrue(re.match(r'[\U00010428-\U0001044f]', '\U00010428', re.I|re.A))
+        self.assertIsNone(re.match(r'[\U00010428-\U0001044f]', '\U00010400', re.I|re.A))
+        self.assertIsNone(re.match(r'[\U00010400-\U00010427]', '\U00010428', re.I|re.A))
+        self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010400', re.I|re.A))
+
+        self.assertTrue(re.match(r'[N-\x7f]', 'A', re.I|re.A))
+        self.assertTrue(re.match(r'[n-\x7f]', 'Z', re.I|re.A))
+        self.assertTrue(re.match(r'[N-\uffff]', 'A', re.I|re.A))
+        self.assertTrue(re.match(r'[n-\uffff]', 'Z', re.I|re.A))
+        self.assertTrue(re.match(r'[N-\U00010000]', 'A', re.I|re.A))
+        self.assertTrue(re.match(r'[n-\U00010000]', 'Z', re.I|re.A))
+
         # Two different characters have the same lowercase.
         assert 'K'.lower() == '\u212a'.lower() == 'k' # 'K'
         self.assertTrue(re.match(r'[J-M]', '\u212a', re.I))
@@ -1116,47 +1277,76 @@ def test_not_literal(self):
 
     def test_possible_set_operations(self):
         s = bytes(range(128)).decode()
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible set difference') as w:
             p = re.compile(r'[0-9--1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('-./0123456789'))
+        with self.assertWarnsRegex(FutureWarning, 'Possible set difference') as w:
+            self.assertEqual(re.findall(r'[0-9--2]', s), list('-./0123456789'))
+        self.assertEqual(w.filename, __file__)
+
         self.assertEqual(re.findall(r'[--1]', s), list('-./01'))
-        with self.assertWarns(FutureWarning):
+
+        with self.assertWarnsRegex(FutureWarning, 'Possible set difference') as w:
             p = re.compile(r'[%--1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list("%&'()*+,-1"))
-        with self.assertWarns(FutureWarning):
+
+        with self.assertWarnsRegex(FutureWarning, 'Possible set difference ') as w:
             p = re.compile(r'[%--]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list("%&'()*+,-"))
 
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible set intersection ') as w:
             p = re.compile(r'[0-9&&1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('&0123456789'))
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible set intersection ') as w:
+            self.assertEqual(re.findall(r'[0-8&&1]', s), list('&012345678'))
+        self.assertEqual(w.filename, __file__)
+
+        with self.assertWarnsRegex(FutureWarning, 'Possible set intersection ') as w:
             p = re.compile(r'[\d&&1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('&0123456789'))
+
         self.assertEqual(re.findall(r'[&&1]', s), list('&1'))
 
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible set union ') as w:
             p = re.compile(r'[0-9||a]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('0123456789a|'))
-        with self.assertWarns(FutureWarning):
+
+        with self.assertWarnsRegex(FutureWarning, 'Possible set union ') as w:
             p = re.compile(r'[\d||a]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('0123456789a|'))
+
         self.assertEqual(re.findall(r'[||1]', s), list('1|'))
 
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible set symmetric difference ') as w:
             p = re.compile(r'[0-9~~1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('0123456789~'))
-        with self.assertWarns(FutureWarning):
+
+        with self.assertWarnsRegex(FutureWarning, 'Possible set symmetric difference ') as w:
             p = re.compile(r'[\d~~1]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('0123456789~'))
+
         self.assertEqual(re.findall(r'[~~1]', s), list('1~'))
 
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible nested set ') as w:
             p = re.compile(r'[[0-9]|]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list('0123456789[]'))
+        with self.assertWarnsRegex(FutureWarning, 'Possible nested set ') as w:
+            self.assertEqual(re.findall(r'[[0-8]|]', s), list('012345678[]'))
+        self.assertEqual(w.filename, __file__)
 
-        with self.assertWarns(FutureWarning):
+        with self.assertWarnsRegex(FutureWarning, 'Possible nested set ') as w:
             p = re.compile(r'[[:digit:]|]')
+        self.assertEqual(w.filename, __file__)
         self.assertEqual(p.findall(s), list(':[]dgit'))
 
     def test_search_coverage(self):
@@ -2451,6 +2641,12 @@ def test_bug_gh100061(self):
         self.assertEqual(re.match("(?>(?:ab?c){1,3})", "aca").span(), (0, 2))
         self.assertEqual(re.match("(?:ab?c){1,3}+", "aca").span(), (0, 2))
 
+    def test_bug_gh101955(self):
+        # Possessive quantifier with nested alternative with capture groups
+        self.assertEqual(re.match('((x)|y|z)*+', 'xyz').groups(), ('z', 'x'))
+        self.assertEqual(re.match('((x)|y|z){3}+', 'xyz').groups(), ('z', 'x'))
+        self.assertEqual(re.match('((x)|y|z){3,}+', 'xyz').groups(), ('z', 'x'))
+
     @unittest.skipIf(multiprocessing is None, 'test requires multiprocessing')
     def test_regression_gh94675(self):
         pattern = re.compile(r'(?<=[({}])(((//[^\n]*)?[\n])([\000-\040])*)*'
@@ -2474,6 +2670,47 @@ def test_regression_gh94675(self):
     def test_fail(self):
         self.assertEqual(re.search(r'12(?!)|3', '123')[0], '3')
 
+    def test_character_set_any(self):
+        # The union of complementary character sets matches any character
+        # and is equivalent to "(?s:.)".
+        s = '1x\n'
+        for p in r'[\s\S]', r'[\d\D]', r'[\w\W]', r'[\S\s]', r'\s|\S':
+            with self.subTest(pattern=p):
+                self.assertEqual(re.findall(p, s), list(s))
+                self.assertEqual(re.fullmatch('(?:' + p + ')+', s).group(), s)
+
+    def test_character_set_none(self):
+        # Negation of the union of complementary character sets does not match
+        # any character.
+        s = '1x\n'
+        for p in r'[^\s\S]', r'[^\d\D]', r'[^\w\W]', r'[^\S\s]':
+            with self.subTest(pattern=p):
+                self.assertIsNone(re.search(p, s))
+                self.assertIsNone(re.search('(?s:.)' + p, s))
+
+    def check_interrupt(self, pattern, string, maxcount):
+        class Interrupt(Exception):
+            pass
+        p = re.compile(pattern)
+        for n in range(maxcount):
+            try:
+                p._fail_after(n, Interrupt)
+                p.match(string)
+                return n
+            except Interrupt:
+                pass
+            finally:
+                p._fail_after(-1, None)
+
+    @unittest.skipUnless(hasattr(re.Pattern, '_fail_after'), 'requires debug build')
+    def test_memory_leaks(self):
+        self.check_interrupt(r'(.)*:', 'abc:', 100)
+        self.check_interrupt(r'([^:])*?:', 'abc:', 100)
+        self.check_interrupt(r'([^:])*+:', 'abc:', 100)
+        self.check_interrupt(r'(.){2,4}:', 'abc:', 100)
+        self.check_interrupt(r'([^:]){2,4}?:', 'abc:', 100)
+        self.check_interrupt(r'([^:]){2,4}+:', 'abc:', 100)
+
 
 def get_debug_out(pat):
     with captured_stdout() as out:
diff --git a/Lib/test/test_readline.py b/Lib/test/test_readline.py
index 5e0e6f8dfac651..8b8772c66ee654 100644
--- a/Lib/test/test_readline.py
+++ b/Lib/test/test_readline.py
@@ -12,6 +12,7 @@
 from test.support.os_helper import unlink, temp_dir, TESTFN
 from test.support.pty_helper import run_pty
 from test.support.script_helper import assert_python_ok
+from test.support.threading_helper import requires_working_threading
 
 # Skip tests if there is no readline module
 readline = import_module('readline')
@@ -113,6 +114,14 @@ def test_write_read_append(self):
         # write_history_file can create the target
         readline.write_history_file(hfilename)
 
+        # Negative values should be disallowed
+        with self.assertRaises(ValueError):
+            readline.append_history_file(-42, hfilename)
+
+        # See gh-122431, using the minimum signed integer value caused a segfault
+        with self.assertRaises(ValueError):
+            readline.append_history_file(-2147483648, hfilename)
+
     def test_nonascii_history(self):
         readline.clear_history()
         try:
@@ -132,6 +141,32 @@ def test_nonascii_history(self):
         self.assertEqual(readline.get_history_item(1), "entrée 1")
         self.assertEqual(readline.get_history_item(2), "entrée 22")
 
+    def test_write_read_limited_history(self):
+        previous_length = readline.get_history_length()
+        self.addCleanup(readline.set_history_length, previous_length)
+
+        readline.clear_history()
+        readline.add_history("first line")
+        readline.add_history("second line")
+        readline.add_history("third line")
+
+        readline.set_history_length(2)
+        self.assertEqual(readline.get_history_length(), 2)
+        readline.write_history_file(TESTFN)
+        self.addCleanup(os.remove, TESTFN)
+
+        readline.clear_history()
+        self.assertEqual(readline.get_current_history_length(), 0)
+        self.assertEqual(readline.get_history_length(), 2)
+
+        readline.read_history_file(TESTFN)
+        self.assertEqual(readline.get_history_item(1), "second line")
+        self.assertEqual(readline.get_history_item(2), "third line")
+        self.assertEqual(readline.get_history_item(3), None)
+
+        # Readline seems to report an additional history element.
+        self.assertIn(readline.get_current_history_length(), (2, 3))
+
 
 class TestReadline(unittest.TestCase):
 
@@ -323,6 +358,50 @@ def test_history_size(self):
             self.assertEqual(len(lines), history_size)
             self.assertEqual(lines[-1].strip(), b"last input")
 
+    @requires_working_threading()
+    def test_gh123321_threadsafe(self):
+        """gh-123321: readline should be thread-safe and not crash"""
+        script = textwrap.dedent(r"""
+            import threading
+            from test.support.threading_helper import join_thread
+
+            def func():
+                input()
+
+            thread1 = threading.Thread(target=func)
+            thread2 = threading.Thread(target=func)
+            thread1.start()
+            thread2.start()
+            join_thread(thread1)
+            join_thread(thread2)
+            print("done")
+        """)
+
+        output = run_pty(script, input=b"input1\rinput2\r")
+
+        self.assertIn(b"done", output)
+
+
+    def test_write_read_limited_history(self):
+        previous_length = readline.get_history_length()
+        self.addCleanup(readline.set_history_length, previous_length)
+
+        readline.add_history("first line")
+        readline.add_history("second line")
+        readline.add_history("third line")
+
+        readline.set_history_length(2)
+        self.assertEqual(readline.get_history_length(), 2)
+        readline.write_history_file(TESTFN)
+        self.addCleanup(os.remove, TESTFN)
+
+        readline.read_history_file(TESTFN)
+        # Without clear_history() there's no good way to test if
+        # the correct entries are present (we're combining history limiting and
+        # possible deduplication with arbitrary previous content).
+        # So, we've only tested that the read did not fail.
+        # See TestHistoryManipulation for the full test.
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_regrtest.py b/Lib/test/test_regrtest.py
index 809abd7e92d65f..a5c9617bb07fd6 100644
--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -21,6 +21,8 @@
 import tempfile
 import textwrap
 import unittest
+from xml.etree import ElementTree
+
 from test import support
 from test.support import os_helper, without_optimizer
 from test.libregrtest import cmdline
@@ -473,14 +475,18 @@ def test_verbose3_huntrleaks(self):
         self.assertEqual(regrtest.hunt_refleak.runs, 10)
         self.assertFalse(regrtest.output_on_failure)
 
-    def test_xml_huntrleaks(self):
-        args = ['-R', '3:12', '--junit-xml', 'output.xml']
+    def test_single_process(self):
+        args = ['-j2', '--single-process']
         with support.captured_stderr():
             regrtest = self.create_regrtest(args)
-        self.assertIsNotNone(regrtest.hunt_refleak)
-        self.assertEqual(regrtest.hunt_refleak.warmups, 3)
-        self.assertEqual(regrtest.hunt_refleak.runs, 12)
-        self.assertIsNone(regrtest.junit_filename)
+        self.assertEqual(regrtest.num_workers, 0)
+        self.assertTrue(regrtest.single_process)
+
+        args = ['--fast-ci', '--single-process']
+        with support.captured_stderr():
+            regrtest = self.create_regrtest(args)
+        self.assertEqual(regrtest.num_workers, 0)
+        self.assertTrue(regrtest.single_process)
 
 
 @dataclasses.dataclass(slots=True)
@@ -783,6 +789,7 @@ def test_finds_expected_number_of_tests(self):
                            f'{", ".join(output.splitlines())}')
 
 
+@support.force_not_colorized_test_class
 class ProgramsTestCase(BaseTestCase):
     """
     Test various ways to run the Python test suite. Use options close
@@ -896,6 +903,7 @@ def test_pcbuild_rt(self):
         self.run_batch(script, *rt_args, *self.regrtest_args, *self.tests)
 
 
+@support.force_not_colorized_test_class
 class ArgsTestCase(BaseTestCase):
     """
     Test arguments of the Python test suite.
@@ -2252,6 +2260,44 @@ def test_pass(self):
             self.check_executed_tests(output, testname, stats=1, parallel=True)
             self.assertNotIn('SPAM SPAM SPAM', output)
 
+    def test_xml(self):
+        code = textwrap.dedent(r"""
+            import unittest
+            from test import support
+
+            class VerboseTests(unittest.TestCase):
+                def test_failed(self):
+                    print("abc \x1b def")
+                    self.fail()
+        """)
+        testname = self.create_test(code=code)
+
+        # Run sequentially
+        filename = os_helper.TESTFN
+        self.addCleanup(os_helper.unlink, filename)
+
+        output = self.run_tests(testname, "--junit-xml", filename,
+                                exitcode=EXITCODE_BAD_TEST)
+        self.check_executed_tests(output, testname,
+                                  failed=testname,
+                                  stats=TestStats(1, 1, 0))
+
+        # Test generated XML
+        with open(filename, encoding="utf8") as fp:
+            content = fp.read()
+
+        testsuite = ElementTree.fromstring(content)
+        self.assertEqual(int(testsuite.get('tests')), 1)
+        self.assertEqual(int(testsuite.get('errors')), 0)
+        self.assertEqual(int(testsuite.get('failures')), 1)
+
+        testcase = testsuite[0][0]
+        self.assertEqual(testcase.get('status'), 'run')
+        self.assertEqual(testcase.get('result'), 'completed')
+        self.assertGreater(float(testcase.get('time')), 0)
+        for out in testcase.iter('system-out'):
+            self.assertEqual(out.text, r"abc \x1b def")
+
 
 class TestUtils(unittest.TestCase):
     def test_format_duration(self):
@@ -2435,6 +2481,25 @@ def id(self):
             self.assertTrue(match_test(test_chdir))
             self.assertFalse(match_test(test_copy))
 
+    def test_sanitize_xml(self):
+        sanitize_xml = utils.sanitize_xml
+
+        # escape invalid XML characters
+        self.assertEqual(sanitize_xml('abc \x1b\x1f def'),
+                         r'abc \x1b\x1f def')
+        self.assertEqual(sanitize_xml('nul:\x00, bell:\x07'),
+                         r'nul:\x00, bell:\x07')
+        self.assertEqual(sanitize_xml('surrogate:\uDC80'),
+                         r'surrogate:\udc80')
+        self.assertEqual(sanitize_xml('illegal \uFFFE and \uFFFF'),
+                         r'illegal \ufffe and \uffff')
+
+        # no escape for valid XML characters
+        self.assertEqual(sanitize_xml('a\n\tb'),
+                         'a\n\tb')
+        self.assertEqual(sanitize_xml('valid t\xe9xt \u20ac'),
+                         'valid t\xe9xt \u20ac')
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_repl.py b/Lib/test/test_repl.py
index 457279a4db687d..356ff5b198d637 100644
--- a/Lib/test/test_repl.py
+++ b/Lib/test/test_repl.py
@@ -1,15 +1,27 @@
 """Test the interactive interpreter."""
 
-import sys
 import os
-import unittest
+import select
 import subprocess
+import sys
+import unittest
 from textwrap import dedent
 from test import support
-from test.support import cpython_only, has_subprocess_support, SuppressCrashReport
+from test.support import (
+    cpython_only,
+    has_subprocess_support,
+    os_helper,
+    SuppressCrashReport,
+    SHORT_TIMEOUT,
+)
 from test.support.script_helper import kill_python
 from test.support.import_helper import import_module
 
+try:
+    import pty
+except ImportError:
+    pty = None
+
 
 if not has_subprocess_support:
     raise unittest.SkipTest("test module requires subprocess")
@@ -29,7 +41,7 @@ def spawn_repl(*args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kw):
     # path may be used by Py_GetPath() to build the default module search
     # path.
     stdin_fname = os.path.join(os.path.dirname(sys.executable), "<stdin>")
-    cmd_line = [stdin_fname, '-E', '-i']
+    cmd_line = [stdin_fname, '-I', '-i']
     cmd_line.extend(args)
 
     # Set TERM=vt100, for the rationale see the comments in spawn_python() of
@@ -58,6 +70,7 @@ def run_on_interactive_mode(source):
     return output
 
 
+@support.force_not_colorized_test_class
 class TestInteractiveInterpreter(unittest.TestCase):
 
     @cpython_only
@@ -175,6 +188,19 @@ def foo(x):
         ]
         self.assertEqual(traceback_lines, expected_lines)
 
+    def test_runsource_show_syntax_error_location(self):
+        user_input = dedent("""def f(x, x): ...
+                            """)
+        p = spawn_repl()
+        p.stdin.write(user_input)
+        output = kill_python(p)
+        expected_lines = [
+            '    def f(x, x): ...',
+            '             ^',
+            "SyntaxError: duplicate argument 'x' in function definition"
+        ]
+        self.assertEqual(output.splitlines()[4:-1], expected_lines)
+
     def test_interactive_source_is_in_linecache(self):
         user_input = dedent("""
         def foo(x):
@@ -195,8 +221,61 @@ def bar(x):
         expected = "(30, None, [\'def foo(x):\\n\', \'    return x + 1\\n\', \'\\n\'], \'<stdin>\')"
         self.assertIn(expected, output, expected)
 
+    def test_asyncio_repl_reaches_python_startup_script(self):
+        with os_helper.temp_dir() as tmpdir:
+            script = os.path.join(tmpdir, "pythonstartup.py")
+            with open(script, "w") as f:
+                f.write("print('pythonstartup done!')" + os.linesep)
+                f.write("exit(0)" + os.linesep)
+
+            env = os.environ.copy()
+            env["PYTHON_HISTORY"] = os.path.join(tmpdir, ".asyncio_history")
+            env["PYTHONSTARTUP"] = script
+            subprocess.check_call(
+                [sys.executable, "-m", "asyncio"],
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                env=env,
+                timeout=SHORT_TIMEOUT,
+            )
 
+    @unittest.skipUnless(pty, "requires pty")
+    def test_asyncio_repl_is_ok(self):
+        m, s = pty.openpty()
+        cmd = [sys.executable, "-I", "-m", "asyncio"]
+        env = os.environ.copy()
+        proc = subprocess.Popen(
+            cmd,
+            stdin=s,
+            stdout=s,
+            stderr=s,
+            text=True,
+            close_fds=True,
+            env=env,
+        )
+        os.close(s)
+        os.write(m, b"await asyncio.sleep(0)\n")
+        os.write(m, b"exit()\n")
+        output = []
+        while select.select([m], [], [], SHORT_TIMEOUT)[0]:
+            try:
+                data = os.read(m, 1024).decode("utf-8")
+                if not data:
+                    break
+            except OSError:
+                break
+            output.append(data)
+        os.close(m)
+        try:
+            exit_code = proc.wait(timeout=SHORT_TIMEOUT)
+        except subprocess.TimeoutExpired:
+            proc.kill()
+            exit_code = proc.wait()
 
+        self.assertEqual(exit_code, 0, "".join(output))
+
+
+@support.force_not_colorized_test_class
 class TestInteractiveModeSyntaxErrors(unittest.TestCase):
 
     def test_interactive_syntax_error_correct_line(self):
@@ -215,5 +294,42 @@ def f():
         self.assertEqual(traceback_lines, expected_lines)
 
 
+class TestAsyncioREPLContextVars(unittest.TestCase):
+    def test_toplevel_contextvars_sync(self):
+        user_input = dedent("""\
+        from contextvars import ContextVar
+        var = ContextVar("var", default="failed")
+        var.set("ok")
+        """)
+        p = spawn_repl("-m", "asyncio")
+        p.stdin.write(user_input)
+        user_input2 = dedent("""
+        print(f"toplevel contextvar test: {var.get()}")
+        """)
+        p.stdin.write(user_input2)
+        output = kill_python(p)
+        self.assertEqual(p.returncode, 0)
+        expected = "toplevel contextvar test: ok"
+        self.assertIn(expected, output, expected)
+
+    def test_toplevel_contextvars_async(self):
+        user_input = dedent("""\
+        from contextvars import ContextVar
+        var = ContextVar('var', default='failed')
+        """)
+        p = spawn_repl("-m", "asyncio")
+        p.stdin.write(user_input)
+        user_input2 = "async def set_var(): var.set('ok')\n"
+        p.stdin.write(user_input2)
+        user_input3 = "await set_var()\n"
+        p.stdin.write(user_input3)
+        user_input4 = "print(f'toplevel contextvar test: {var.get()}')\n"
+        p.stdin.write(user_input4)
+        output = kill_python(p)
+        self.assertEqual(p.returncode, 0)
+        expected = "toplevel contextvar test: ok"
+        self.assertIn(expected, output, expected)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_reprlib.py b/Lib/test/test_reprlib.py
index 3e93b561c143d8..ffeb1fba7b80c6 100644
--- a/Lib/test/test_reprlib.py
+++ b/Lib/test/test_reprlib.py
@@ -580,6 +580,50 @@ def test_invalid_indent(self):
                 with self.assertRaisesRegex(expected_error, expected_msg):
                     r.repr(test_object)
 
+    def test_shadowed_stdlib_array(self):
+        # Issue #113570: repr() should not be fooled by an array
+        class array:
+            def __repr__(self):
+                return "not array.array"
+
+        self.assertEqual(r(array()), "not array.array")
+
+    def test_shadowed_builtin(self):
+        # Issue #113570: repr() should not be fooled
+        # by a shadowed builtin function
+        class list:
+            def __repr__(self):
+                return "not builtins.list"
+
+        self.assertEqual(r(list()), "not builtins.list")
+
+    def test_custom_repr(self):
+        class MyRepr(Repr):
+
+            def repr_TextIOWrapper(self, obj, level):
+                if obj.name in {'<stdin>', '<stdout>', '<stderr>'}:
+                    return obj.name
+                return repr(obj)
+
+        aRepr = MyRepr()
+        self.assertEqual(aRepr.repr(sys.stdin), "<stdin>")
+
+    def test_custom_repr_class_with_spaces(self):
+        class TypeWithSpaces:
+            pass
+
+        t = TypeWithSpaces()
+        type(t).__name__ = "type with spaces"
+        self.assertEqual(type(t).__name__, "type with spaces")
+
+        class MyRepr(Repr):
+            def repr_type_with_spaces(self, obj, level):
+                return "Type With Spaces"
+
+
+        aRepr = MyRepr()
+        self.assertEqual(aRepr.repr(t), "Type With Spaces")
+
 def write_file(path, text):
     with open(path, 'w', encoding='ASCII') as fp:
         fp.write(text)
diff --git a/Lib/test/test_runpy.py b/Lib/test/test_runpy.py
index 9d76764c75be3e..ada78ec8e6b0c7 100644
--- a/Lib/test/test_runpy.py
+++ b/Lib/test/test_runpy.py
@@ -12,10 +12,16 @@
 import textwrap
 import unittest
 import warnings
-from test.support import (infinite_recursion, no_tracing, verbose,
-                          requires_subprocess, requires_resource)
+from test.support import (
+    force_not_colorized_test_class,
+    infinite_recursion,
+    no_tracing,
+    requires_resource,
+    requires_subprocess,
+    verbose,
+)
 from test.support.import_helper import forget, make_legacy_pyc, unload
-from test.support.os_helper import create_empty_file, temp_dir
+from test.support.os_helper import create_empty_file, temp_dir, FakePath
 from test.support.script_helper import make_script, make_zip_script
 
 
@@ -657,14 +663,13 @@ def test_basic_script(self):
             self._check_script(script_name, "<run_path>", script_name,
                                script_name, expect_spec=False)
 
-    def test_basic_script_with_path_object(self):
+    def test_basic_script_with_pathlike_object(self):
         with temp_dir() as script_dir:
             mod_name = 'script'
-            script_name = pathlib.Path(self._make_test_script(script_dir,
-                                                              mod_name))
-            self._check_script(script_name, "<run_path>",
-                               os.fsdecode(script_name),
-                               os.fsdecode(script_name),
+            script_name = self._make_test_script(script_dir, mod_name)
+            self._check_script(FakePath(script_name), "<run_path>",
+                               script_name,
+                               script_name,
                                expect_spec=False)
 
     def test_basic_script_no_suffix(self):
@@ -759,6 +764,7 @@ def test_encoding(self):
             self.assertEqual(result['s'], "non-ASCII: h\xe9")
 
 
+@force_not_colorized_test_class
 class TestExit(unittest.TestCase):
     STATUS_CONTROL_C_EXIT = 0xC000013A
     EXPECTED_CODE = (
diff --git a/Lib/test/test_scope.py b/Lib/test/test_scope.py
index 6e46dfa96a664f..24a366efc6ca05 100644
--- a/Lib/test/test_scope.py
+++ b/Lib/test/test_scope.py
@@ -810,6 +810,30 @@ def dig(self):
         gc_collect()  # For PyPy or other GCs.
         self.assertIsNone(ref())
 
+    def test_multiple_nesting(self):
+        # Regression test for https://github.com/python/cpython/issues/121863
+        class MultiplyNested:
+            def f1(self):
+                __arg = 1
+                class D:
+                    def g(self, __arg):
+                        return __arg
+                return D().g(_MultiplyNested__arg=2)
+
+            def f2(self):
+                __arg = 1
+                class D:
+                    def g(self, __arg):
+                        return __arg
+                return D().g
+
+        inst = MultiplyNested()
+        with self.assertRaises(TypeError):
+            inst.f1()
+
+        closure = inst.f2()
+        with self.assertRaises(TypeError):
+            closure(_MultiplyNested__arg=2)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_setcomps.py b/Lib/test/test_setcomps.py
index 976fa885bd8ef9..0bb02ef11f6b4b 100644
--- a/Lib/test/test_setcomps.py
+++ b/Lib/test/test_setcomps.py
@@ -1,6 +1,9 @@
 import doctest
+import traceback
 import unittest
 
+from test.support import BrokenIter
+
 
 doctests = """
 ########### Tests mostly copied from test_listcomps.py ############
@@ -148,6 +151,42 @@
 
 """
 
+class SetComprehensionTest(unittest.TestCase):
+    def test_exception_locations(self):
+        # The location of an exception raised from __init__ or
+        # __next__ should should be the iterator expression
+
+        def init_raises():
+            try:
+                {x for x in BrokenIter(init_raises=True)}
+            except Exception as e:
+                return e
+
+        def next_raises():
+            try:
+                {x for x in BrokenIter(next_raises=True)}
+            except Exception as e:
+                return e
+
+        def iter_raises():
+            try:
+                {x for x in BrokenIter(iter_raises=True)}
+            except Exception as e:
+                return e
+
+        for func, expected in [(init_raises, "BrokenIter(init_raises=True)"),
+                               (next_raises, "BrokenIter(next_raises=True)"),
+                               (iter_raises, "BrokenIter(iter_raises=True)"),
+                              ]:
+            with self.subTest(func):
+                exc = func()
+                f = traceback.extract_tb(exc.__traceback__)[0]
+                indent = 16
+                co = func.__code__
+                self.assertEqual(f.lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.end_lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.line[f.colno - indent : f.end_colno - indent],
+                                 expected)
 
 __test__ = {'doctests' : doctests}
 
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index 5b0aac67a0adeb..31032558ab0974 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -70,18 +70,17 @@ def wrap(*args, **kwargs):
             os.rename = builtin_rename
     return wrap
 
-def write_file(path, content, binary=False):
+def create_file(path, content=b''):
     """Write *content* to a file located at *path*.
 
     If *path* is a tuple instead of a string, os.path.join will be used to
-    make a path.  If *binary* is true, the file will be opened in binary
-    mode.
+    make a path.
     """
     if isinstance(path, tuple):
         path = os.path.join(*path)
-    mode = 'wb' if binary else 'w'
-    encoding = None if binary else "utf-8"
-    with open(path, mode, encoding=encoding) as fp:
+    if isinstance(content, str):
+        content = content.encode()
+    with open(path, 'xb') as fp:
         fp.write(content)
 
 def write_test_file(path, size):
@@ -190,7 +189,7 @@ def test_rmtree_works_on_bytes(self):
         tmp = self.mkdtemp()
         victim = os.path.join(tmp, 'killme')
         os.mkdir(victim)
-        write_file(os.path.join(victim, 'somefile'), 'foo')
+        create_file(os.path.join(victim, 'somefile'), 'foo')
         victim = os.fsencode(victim)
         self.assertIsInstance(victim, bytes)
         shutil.rmtree(victim)
@@ -242,7 +241,7 @@ def test_rmtree_works_on_symlinks(self):
         for d in dir1, dir2, dir3:
             os.mkdir(d)
         file1 = os.path.join(tmp, 'file1')
-        write_file(file1, 'foo')
+        create_file(file1, 'foo')
         link1 = os.path.join(dir1, 'link1')
         os.symlink(dir2, link1)
         link2 = os.path.join(dir1, 'link2')
@@ -304,7 +303,7 @@ def test_rmtree_works_on_junctions(self):
         for d in dir1, dir2, dir3:
             os.mkdir(d)
         file1 = os.path.join(tmp, 'file1')
-        write_file(file1, 'foo')
+        create_file(file1, 'foo')
         link1 = os.path.join(dir1, 'link1')
         _winapi.CreateJunction(dir2, link1)
         link2 = os.path.join(dir1, 'link2')
@@ -327,7 +326,7 @@ def test_rmtree_errors(self):
         # existing file
         tmpdir = self.mkdtemp()
         filename = os.path.join(tmpdir, "tstfile")
-        write_file(filename, "")
+        create_file(filename)
         with self.assertRaises(NotADirectoryError) as cm:
             shutil.rmtree(filename)
         self.assertEqual(cm.exception.filename, filename)
@@ -347,7 +346,7 @@ def test_rmtree_errors(self):
     def test_rmtree_errors_onerror(self):
         tmpdir = self.mkdtemp()
         filename = os.path.join(tmpdir, "tstfile")
-        write_file(filename, "")
+        create_file(filename)
         errors = []
         def onerror(*args):
             errors.append(args)
@@ -365,7 +364,7 @@ def onerror(*args):
     def test_rmtree_errors_onexc(self):
         tmpdir = self.mkdtemp()
         filename = os.path.join(tmpdir, "tstfile")
-        write_file(filename, "")
+        create_file(filename)
         errors = []
         def onexc(*args):
             errors.append(args)
@@ -547,7 +546,7 @@ def raiser(fn, *args, **kwargs):
             os.lstat = raiser
 
             os.mkdir(TESTFN)
-            write_file((TESTFN, 'foo'), 'foo')
+            create_file((TESTFN, 'foo'), 'foo')
             shutil.rmtree(TESTFN)
         finally:
             os.lstat = orig_lstat
@@ -620,7 +619,7 @@ def test_rmtree_with_dir_fd(self):
         self.addCleanup(os.close, dir_fd)
         os.mkdir(fullname)
         os.mkdir(os.path.join(fullname, 'subdir'))
-        write_file(os.path.join(fullname, 'subdir', 'somefile'), 'foo')
+        create_file(os.path.join(fullname, 'subdir', 'somefile'), 'foo')
         self.assertTrue(os.path.exists(fullname))
         shutil.rmtree(victim, dir_fd=dir_fd)
         self.assertFalse(os.path.exists(fullname))
@@ -660,7 +659,7 @@ def test_rmtree_on_junction(self):
             src = os.path.join(TESTFN, 'cheese')
             dst = os.path.join(TESTFN, 'shop')
             os.mkdir(src)
-            open(os.path.join(src, 'spam'), 'wb').close()
+            create_file(os.path.join(src, 'spam'))
             _winapi.CreateJunction(src, dst)
             self.assertRaises(OSError, shutil.rmtree, dst)
             shutil.rmtree(dst, ignore_errors=True)
@@ -720,7 +719,7 @@ def _onexc(fn, path, exc):
         for path in dirs:
             os.mkdir(path)
         for path in files:
-            write_file(path, '')
+            create_file(path)
 
         old_modes = [os.stat(path).st_mode for path in paths]
 
@@ -741,6 +740,16 @@ def _onexc(fn, path, exc):
             shutil.rmtree(TESTFN)
             raise
 
+    def test_rmtree_above_recursion_limit(self):
+        recursion_limit = 40
+        # directory_depth > recursion_limit
+        directory_depth = recursion_limit + 10
+        base = os.path.join(TESTFN, *(['d'] * directory_depth))
+        os.makedirs(base)
+
+        with support.infinite_recursion(recursion_limit):
+            shutil.rmtree(TESTFN)
+
 
 class TestCopyTree(BaseTest, unittest.TestCase):
 
@@ -749,9 +758,9 @@ def test_copytree_simple(self):
         dst_dir = os.path.join(self.mkdtemp(), 'destination')
         self.addCleanup(shutil.rmtree, src_dir)
         self.addCleanup(shutil.rmtree, os.path.dirname(dst_dir))
-        write_file((src_dir, 'test.txt'), '123')
+        create_file((src_dir, 'test.txt'), '123')
         os.mkdir(os.path.join(src_dir, 'test_dir'))
-        write_file((src_dir, 'test_dir', 'test.txt'), '456')
+        create_file((src_dir, 'test_dir', 'test.txt'), '456')
 
         shutil.copytree(src_dir, dst_dir)
         self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'test.txt')))
@@ -769,11 +778,11 @@ def test_copytree_dirs_exist_ok(self):
         self.addCleanup(shutil.rmtree, src_dir)
         self.addCleanup(shutil.rmtree, dst_dir)
 
-        write_file((src_dir, 'nonexisting.txt'), '123')
+        create_file((src_dir, 'nonexisting.txt'), '123')
         os.mkdir(os.path.join(src_dir, 'existing_dir'))
         os.mkdir(os.path.join(dst_dir, 'existing_dir'))
-        write_file((dst_dir, 'existing_dir', 'existing.txt'), 'will be replaced')
-        write_file((src_dir, 'existing_dir', 'existing.txt'), 'has been replaced')
+        create_file((dst_dir, 'existing_dir', 'existing.txt'), 'will be replaced')
+        create_file((src_dir, 'existing_dir', 'existing.txt'), 'has been replaced')
 
         shutil.copytree(src_dir, dst_dir, dirs_exist_ok=True)
         self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'nonexisting.txt')))
@@ -796,7 +805,7 @@ def test_copytree_symlinks(self):
         sub_dir = os.path.join(src_dir, 'sub')
         os.mkdir(src_dir)
         os.mkdir(sub_dir)
-        write_file((src_dir, 'file.txt'), 'foo')
+        create_file((src_dir, 'file.txt'), 'foo')
         src_link = os.path.join(sub_dir, 'link')
         dst_link = os.path.join(dst_dir, 'sub/link')
         os.symlink(os.path.join(src_dir, 'file.txt'),
@@ -827,16 +836,16 @@ def test_copytree_with_exclude(self):
         src_dir = self.mkdtemp()
         try:
             dst_dir = join(self.mkdtemp(), 'destination')
-            write_file((src_dir, 'test.txt'), '123')
-            write_file((src_dir, 'test.tmp'), '123')
+            create_file((src_dir, 'test.txt'), '123')
+            create_file((src_dir, 'test.tmp'), '123')
             os.mkdir(join(src_dir, 'test_dir'))
-            write_file((src_dir, 'test_dir', 'test.txt'), '456')
+            create_file((src_dir, 'test_dir', 'test.txt'), '456')
             os.mkdir(join(src_dir, 'test_dir2'))
-            write_file((src_dir, 'test_dir2', 'test.txt'), '456')
+            create_file((src_dir, 'test_dir2', 'test.txt'), '456')
             os.mkdir(join(src_dir, 'test_dir2', 'subdir'))
             os.mkdir(join(src_dir, 'test_dir2', 'subdir2'))
-            write_file((src_dir, 'test_dir2', 'subdir', 'test.txt'), '456')
-            write_file((src_dir, 'test_dir2', 'subdir2', 'test.py'), '456')
+            create_file((src_dir, 'test_dir2', 'subdir', 'test.txt'), '456')
+            create_file((src_dir, 'test_dir2', 'subdir2', 'test.py'), '456')
 
             # testing glob-like patterns
             try:
@@ -895,7 +904,7 @@ def test_copytree_arg_types_of_ignore(self):
         os.mkdir(join(src_dir))
         os.mkdir(join(src_dir, 'test_dir'))
         os.mkdir(os.path.join(src_dir, 'test_dir', 'subdir'))
-        write_file((src_dir, 'test_dir', 'subdir', 'test.txt'), '456')
+        create_file((src_dir, 'test_dir', 'subdir', 'test.txt'), '456')
 
         invokations = []
 
@@ -914,7 +923,7 @@ def _ignore(src, names):
                                     'test.txt')))
 
         dst_dir = join(self.mkdtemp(), 'destination')
-        shutil.copytree(pathlib.Path(src_dir), dst_dir, ignore=_ignore)
+        shutil.copytree(FakePath(src_dir), dst_dir, ignore=_ignore)
         self.assertTrue(exists(join(dst_dir, 'test_dir', 'subdir',
                                     'test.txt')))
 
@@ -935,9 +944,9 @@ def test_copytree_retains_permissions(self):
         self.addCleanup(shutil.rmtree, tmp_dir)
 
         os.chmod(src_dir, 0o777)
-        write_file((src_dir, 'permissive.txt'), '123')
+        create_file((src_dir, 'permissive.txt'), '123')
         os.chmod(os.path.join(src_dir, 'permissive.txt'), 0o777)
-        write_file((src_dir, 'restrictive.txt'), '456')
+        create_file((src_dir, 'restrictive.txt'), '456')
         os.chmod(os.path.join(src_dir, 'restrictive.txt'), 0o600)
         restrictive_subdir = tempfile.mkdtemp(dir=src_dir)
         self.addCleanup(os_helper.rmtree, restrictive_subdir)
@@ -980,8 +989,7 @@ def custom_cpfun(a, b):
         flag = []
         src = self.mkdtemp()
         dst = tempfile.mktemp(dir=self.mkdtemp())
-        with open(os.path.join(src, 'foo'), 'w', encoding='utf-8') as f:
-            f.close()
+        create_file(os.path.join(src, 'foo'))
         shutil.copytree(src, dst, copy_function=custom_cpfun)
         self.assertEqual(len(flag), 1)
 
@@ -1016,9 +1024,9 @@ def test_copytree_named_pipe(self):
     def test_copytree_special_func(self):
         src_dir = self.mkdtemp()
         dst_dir = os.path.join(self.mkdtemp(), 'destination')
-        write_file((src_dir, 'test.txt'), '123')
+        create_file((src_dir, 'test.txt'), '123')
         os.mkdir(os.path.join(src_dir, 'test_dir'))
-        write_file((src_dir, 'test_dir', 'test.txt'), '456')
+        create_file((src_dir, 'test_dir', 'test.txt'), '456')
 
         copied = []
         def _copy(src, dst):
@@ -1031,7 +1039,7 @@ def _copy(src, dst):
     def test_copytree_dangling_symlinks(self):
         src_dir = self.mkdtemp()
         valid_file = os.path.join(src_dir, 'test.txt')
-        write_file(valid_file, 'abc')
+        create_file(valid_file, 'abc')
         dir_a = os.path.join(src_dir, 'dir_a')
         os.mkdir(dir_a)
         for d in src_dir, dir_a:
@@ -1059,8 +1067,7 @@ def test_copytree_symlink_dir(self):
         src_dir = self.mkdtemp()
         dst_dir = os.path.join(self.mkdtemp(), 'destination')
         os.mkdir(os.path.join(src_dir, 'real_dir'))
-        with open(os.path.join(src_dir, 'real_dir', 'test.txt'), 'wb'):
-            pass
+        create_file(os.path.join(src_dir, 'real_dir', 'test.txt'))
         os.symlink(os.path.join(src_dir, 'real_dir'),
                    os.path.join(src_dir, 'link_to_dir'),
                    target_is_directory=True)
@@ -1080,7 +1087,7 @@ def test_copytree_return_value(self):
         dst_dir = src_dir + "dest"
         self.addCleanup(shutil.rmtree, dst_dir, True)
         src = os.path.join(src_dir, 'foo')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         rv = shutil.copytree(src_dir, dst_dir)
         self.assertEqual(['foo'], os.listdir(rv))
 
@@ -1092,7 +1099,7 @@ def test_copytree_subdirectory(self):
         dst_dir = os.path.join(src_dir, "somevendor", "1.0")
         os.makedirs(src_dir)
         src = os.path.join(src_dir, 'pol')
-        write_file(src, 'pol')
+        create_file(src, 'pol')
         rv = shutil.copytree(src_dir, dst_dir)
         self.assertEqual(['pol'], os.listdir(rv))
 
@@ -1107,8 +1114,8 @@ def test_copymode_follow_symlinks(self):
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
         dst_link = os.path.join(tmp_dir, 'quux')
-        write_file(src, 'foo')
-        write_file(dst, 'foo')
+        create_file(src, 'foo')
+        create_file(dst, 'foo')
         os.symlink(src, src_link)
         os.symlink(dst, dst_link)
         os.chmod(src, stat.S_IRWXU|stat.S_IRWXG)
@@ -1139,8 +1146,8 @@ def test_copymode_symlink_to_symlink(self):
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
         dst_link = os.path.join(tmp_dir, 'quux')
-        write_file(src, 'foo')
-        write_file(dst, 'foo')
+        create_file(src, 'foo')
+        create_file(dst, 'foo')
         os.symlink(src, src_link)
         os.symlink(dst, dst_link)
         os.chmod(src, stat.S_IRWXU|stat.S_IRWXG)
@@ -1170,8 +1177,8 @@ def test_copymode_symlink_to_symlink_wo_lchmod(self):
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
         dst_link = os.path.join(tmp_dir, 'quux')
-        write_file(src, 'foo')
-        write_file(dst, 'foo')
+        create_file(src, 'foo')
+        create_file(dst, 'foo')
         os.symlink(src, src_link)
         os.symlink(dst, dst_link)
         shutil.copymode(src_link, dst_link, follow_symlinks=False)  # silent fail
@@ -1185,11 +1192,11 @@ def test_copystat_symlinks(self):
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
         dst_link = os.path.join(tmp_dir, 'qux')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         src_stat = os.stat(src)
         os.utime(src, (src_stat.st_atime,
                        src_stat.st_mtime - 42.0))  # ensure different mtimes
-        write_file(dst, 'bar')
+        create_file(dst, 'bar')
         self.assertNotEqual(os.stat(src).st_mtime, os.stat(dst).st_mtime)
         os.symlink(src, src_link)
         os.symlink(dst, dst_link)
@@ -1227,8 +1234,8 @@ def test_copystat_handles_harmless_chflags_errors(self):
         tmpdir = self.mkdtemp()
         file1 = os.path.join(tmpdir, 'file1')
         file2 = os.path.join(tmpdir, 'file2')
-        write_file(file1, 'xxx')
-        write_file(file2, 'xxx')
+        create_file(file1, 'xxx')
+        create_file(file2, 'xxx')
 
         def make_chflags_raiser(err):
             ex = OSError()
@@ -1254,9 +1261,9 @@ def _chflags_raiser(path, flags, *, follow_symlinks=True):
     def test_copyxattr(self):
         tmp_dir = self.mkdtemp()
         src = os.path.join(tmp_dir, 'foo')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         dst = os.path.join(tmp_dir, 'bar')
-        write_file(dst, 'bar')
+        create_file(dst, 'bar')
 
         # no xattr == no problem
         shutil._copyxattr(src, dst)
@@ -1270,7 +1277,7 @@ def test_copyxattr(self):
                 os.getxattr(dst, 'user.foo'))
         # check errors don't affect other attrs
         os.remove(dst)
-        write_file(dst, 'bar')
+        create_file(dst, 'bar')
         os_error = OSError(errno.EPERM, 'EPERM')
 
         def _raise_on_user_foo(fname, attr, val, **kwargs):
@@ -1300,15 +1307,15 @@ def _raise_on_src(fname, *, follow_symlinks=True):
         # test that shutil.copystat copies xattrs
         src = os.path.join(tmp_dir, 'the_original')
         srcro = os.path.join(tmp_dir, 'the_original_ro')
-        write_file(src, src)
-        write_file(srcro, srcro)
+        create_file(src, src)
+        create_file(srcro, srcro)
         os.setxattr(src, 'user.the_value', b'fiddly')
         os.setxattr(srcro, 'user.the_value', b'fiddly')
         os.chmod(srcro, 0o444)
         dst = os.path.join(tmp_dir, 'the_copy')
         dstro = os.path.join(tmp_dir, 'the_copy_ro')
-        write_file(dst, dst)
-        write_file(dstro, dstro)
+        create_file(dst, dst)
+        create_file(dstro, dstro)
         shutil.copystat(src, dst)
         shutil.copystat(srcro, dstro)
         self.assertEqual(os.getxattr(dst, 'user.the_value'), b'fiddly')
@@ -1324,13 +1331,13 @@ def test_copyxattr_symlinks(self):
         tmp_dir = self.mkdtemp()
         src = os.path.join(tmp_dir, 'foo')
         src_link = os.path.join(tmp_dir, 'baz')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         os.symlink(src, src_link)
         os.setxattr(src, 'trusted.foo', b'42')
         os.setxattr(src_link, 'trusted.foo', b'43', follow_symlinks=False)
         dst = os.path.join(tmp_dir, 'bar')
         dst_link = os.path.join(tmp_dir, 'qux')
-        write_file(dst, 'bar')
+        create_file(dst, 'bar')
         os.symlink(dst, dst_link)
         shutil._copyxattr(src_link, dst_link, follow_symlinks=False)
         self.assertEqual(os.getxattr(dst_link, 'trusted.foo', follow_symlinks=False), b'43')
@@ -1343,7 +1350,7 @@ def test_copyxattr_symlinks(self):
     def _copy_file(self, method):
         fname = 'test.txt'
         tmpdir = self.mkdtemp()
-        write_file((tmpdir, fname), 'xxx')
+        create_file((tmpdir, fname), 'xxx')
         file1 = os.path.join(tmpdir, fname)
         tmpdir2 = self.mkdtemp()
         method(file1, tmpdir2)
@@ -1362,7 +1369,7 @@ def test_copy_symlinks(self):
         src = os.path.join(tmp_dir, 'foo')
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         os.symlink(src, src_link)
         if hasattr(os, 'lchmod'):
             os.lchmod(src_link, stat.S_IRWXU | stat.S_IRWXO)
@@ -1404,7 +1411,7 @@ def test_copy2_symlinks(self):
         src = os.path.join(tmp_dir, 'foo')
         dst = os.path.join(tmp_dir, 'bar')
         src_link = os.path.join(tmp_dir, 'baz')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         os.symlink(src, src_link)
         if hasattr(os, 'lchmod'):
             os.lchmod(src_link, stat.S_IRWXU | stat.S_IRWXO)
@@ -1438,7 +1445,7 @@ def test_copy2_xattr(self):
         tmp_dir = self.mkdtemp()
         src = os.path.join(tmp_dir, 'foo')
         dst = os.path.join(tmp_dir, 'bar')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         os.setxattr(src, 'user.foo', b'42')
         shutil.copy2(src, dst)
         self.assertEqual(
@@ -1452,7 +1459,7 @@ def test_copy_return_value(self):
             src_dir = self.mkdtemp()
             dst_dir = self.mkdtemp()
             src = os.path.join(src_dir, 'foo')
-            write_file(src, 'foo')
+            create_file(src, 'foo')
             rv = fn(src, dst_dir)
             self.assertEqual(rv, os.path.join(dst_dir, 'foo'))
             rv = fn(src, os.path.join(dst_dir, 'bar'))
@@ -1469,7 +1476,7 @@ def _test_copy_dir(self, copy_func):
         src_file = os.path.join(src_dir, 'foo')
         dir2 = self.mkdtemp()
         dst = os.path.join(src_dir, 'does_not_exist/')
-        write_file(src_file, 'foo')
+        create_file(src_file, 'foo')
         if sys.platform == "win32":
             err = PermissionError
         else:
@@ -1489,7 +1496,7 @@ def test_copyfile_symlinks(self):
         dst = os.path.join(tmp_dir, 'dst')
         dst_link = os.path.join(tmp_dir, 'dst_link')
         link = os.path.join(tmp_dir, 'link')
-        write_file(src, 'foo')
+        create_file(src, 'foo')
         os.symlink(src, link)
         # don't follow
         shutil.copyfile(link, dst_link, follow_symlinks=False)
@@ -1506,8 +1513,7 @@ def test_dont_copy_file_onto_link_to_itself(self):
         src = os.path.join(TESTFN, 'cheese')
         dst = os.path.join(TESTFN, 'shop')
         try:
-            with open(src, 'w', encoding='utf-8') as f:
-                f.write('cheddar')
+            create_file(src, 'cheddar')
             try:
                 os.link(src, dst)
             except PermissionError as e:
@@ -1526,8 +1532,7 @@ def test_dont_copy_file_onto_symlink_to_itself(self):
         src = os.path.join(TESTFN, 'cheese')
         dst = os.path.join(TESTFN, 'shop')
         try:
-            with open(src, 'w', encoding='utf-8') as f:
-                f.write('cheddar')
+            create_file(src, 'cheddar')
             # Using `src` here would mean we end up with a symlink pointing
             # to TESTFN/TESTFN/cheese, while it should point at
             # TESTFN/cheese.
@@ -1562,7 +1567,7 @@ def test_copyfile_return_value(self):
         dst_dir = self.mkdtemp()
         dst_file = os.path.join(dst_dir, 'bar')
         src_file = os.path.join(src_dir, 'foo')
-        write_file(src_file, 'foo')
+        create_file(src_file, 'foo')
         rv = shutil.copyfile(src_file, dst_file)
         self.assertTrue(os.path.exists(rv))
         self.assertEqual(read_file(src_file), read_file(dst_file))
@@ -1572,7 +1577,7 @@ def test_copyfile_same_file(self):
         # are the same.
         src_dir = self.mkdtemp()
         src_file = os.path.join(src_dir, 'foo')
-        write_file(src_file, 'foo')
+        create_file(src_file, 'foo')
         self.assertRaises(SameFileError, shutil.copyfile, src_file, src_file)
         # But Error should work too, to stay backward compatible.
         self.assertRaises(Error, shutil.copyfile, src_file, src_file)
@@ -1589,7 +1594,7 @@ def test_copyfile_nonexistent_dir(self):
         src_dir = self.mkdtemp()
         src_file = os.path.join(src_dir, 'foo')
         dst = os.path.join(src_dir, 'does_not_exist/')
-        write_file(src_file, 'foo')
+        create_file(src_file, 'foo')
         self.assertRaises(FileNotFoundError, shutil.copyfile, src_file, dst)
 
     def test_copyfile_copy_dir(self):
@@ -1600,7 +1605,7 @@ def test_copyfile_copy_dir(self):
         src_file = os.path.join(src_dir, 'foo')
         dir2 = self.mkdtemp()
         dst = os.path.join(src_dir, 'does_not_exist/')
-        write_file(src_file, 'foo')
+        create_file(src_file, 'foo')
         if sys.platform == "win32":
             err = PermissionError
         else:
@@ -1626,13 +1631,13 @@ def _create_files(self, base_dir='dist'):
         root_dir = self.mkdtemp()
         dist = os.path.join(root_dir, base_dir)
         os.makedirs(dist, exist_ok=True)
-        write_file((dist, 'file1'), 'xxx')
-        write_file((dist, 'file2'), 'xxx')
+        create_file((dist, 'file1'), 'xxx')
+        create_file((dist, 'file2'), 'xxx')
         os.mkdir(os.path.join(dist, 'sub'))
-        write_file((dist, 'sub', 'file3'), 'xxx')
+        create_file((dist, 'sub', 'file3'), 'xxx')
         os.mkdir(os.path.join(dist, 'sub2'))
         if base_dir:
-            write_file((root_dir, 'outer'), 'xxx')
+            create_file((root_dir, 'outer'), 'xxx')
         return root_dir, base_dir
 
     @support.requires_zlib()
@@ -1901,7 +1906,10 @@ def test_unzip_zipfile(self):
                 subprocess.check_output(zip_cmd, stderr=subprocess.STDOUT)
             except subprocess.CalledProcessError as exc:
                 details = exc.output.decode(errors="replace")
-                if 'unrecognized option: t' in details:
+                if any(message in details for message in [
+                    'unrecognized option: t',  # BusyBox
+                    'invalid option -- t',  # Android
+                ]):
                     self.skipTest("unzip doesn't support -t")
                 msg = "{}\n\n**Unzip Output**\n{}"
                 self.fail(msg.format(exc, details))
@@ -2107,7 +2115,7 @@ def check_unpack_archive(self, format, **kwargs):
         self.check_unpack_archive_with_converter(
             format, lambda path: path, **kwargs)
         self.check_unpack_archive_with_converter(
-            format, pathlib.Path, **kwargs)
+            format, FakePath, **kwargs)
         self.check_unpack_archive_with_converter(format, FakePath, **kwargs)
 
     def check_unpack_archive_with_converter(self, format, converter, **kwargs):
@@ -2213,7 +2221,7 @@ def test_chown(self):
         dirname = self.mkdtemp()
         filename = tempfile.mktemp(dir=dirname)
         linkname = os.path.join(dirname, "chown_link")
-        write_file(filename, 'testing chown function')
+        create_file(filename, 'testing chown function')
         os.symlink(filename, linkname)
 
         with self.assertRaises(ValueError):
@@ -2306,37 +2314,41 @@ def check_chown(path, uid=None, gid=None):
 class TestWhich(BaseTest, unittest.TestCase):
 
     def setUp(self):
-        self.temp_dir = self.mkdtemp(prefix="Tmp")
+        temp_dir = self.mkdtemp(prefix="Tmp")
+        base_dir = os.path.join(temp_dir, TESTFN + '-basedir')
+        os.mkdir(base_dir)
+        self.dir = os.path.join(base_dir, TESTFN + '-dir')
+        os.mkdir(self.dir)
+        self.other_dir = os.path.join(base_dir, TESTFN + '-dir2')
+        os.mkdir(self.other_dir)
         # Give the temp_file an ".exe" suffix for all.
         # It's needed on Windows and not harmful on other platforms.
-        self.temp_file = tempfile.NamedTemporaryFile(dir=self.temp_dir,
-                                                     prefix="Tmp",
-                                                     suffix=".Exe")
-        os.chmod(self.temp_file.name, stat.S_IXUSR)
-        self.addCleanup(self.temp_file.close)
-        self.dir, self.file = os.path.split(self.temp_file.name)
+        self.file = TESTFN + '.Exe'
+        self.filepath = os.path.join(self.dir, self.file)
+        self.create_file(self.filepath)
         self.env_path = self.dir
         self.curdir = os.curdir
         self.ext = ".EXE"
 
-    def to_text_type(self, s):
-        '''
-        In this class we're testing with str, so convert s to a str
-        '''
-        if isinstance(s, bytes):
-            return s.decode()
-        return s
+    to_text_type = staticmethod(os.fsdecode)
+
+    def create_file(self, path):
+        create_file(path)
+        os.chmod(path, 0o755)
+
+    def assertNormEqual(self, actual, expected):
+        self.assertEqual(os.path.normcase(actual), os.path.normcase(expected))
 
     def test_basic(self):
         # Given an EXE in a directory, it should be returned.
         rv = shutil.which(self.file, path=self.dir)
-        self.assertEqual(rv, self.temp_file.name)
+        self.assertEqual(rv, self.filepath)
 
     def test_absolute_cmd(self):
         # When given the fully qualified path to an executable that exists,
         # it should be returned.
-        rv = shutil.which(self.temp_file.name, path=self.temp_dir)
-        self.assertEqual(rv, self.temp_file.name)
+        rv = shutil.which(self.filepath, path=self.other_dir)
+        self.assertEqual(rv, self.filepath)
 
     def test_relative_cmd(self):
         # When given the relative path with a directory part to an executable
@@ -2344,7 +2356,7 @@ def test_relative_cmd(self):
         base_dir, tail_dir = os.path.split(self.dir)
         relpath = os.path.join(tail_dir, self.file)
         with os_helper.change_cwd(path=base_dir):
-            rv = shutil.which(relpath, path=self.temp_dir)
+            rv = shutil.which(relpath, path=self.other_dir)
             self.assertEqual(rv, relpath)
         # But it shouldn't be searched in PATH directories (issue #16957).
         with os_helper.change_cwd(path=self.dir):
@@ -2355,9 +2367,8 @@ def test_relative_cmd(self):
                          "test is for non win32")
     def test_cwd_non_win32(self):
         # Issue #16957
-        base_dir = os.path.dirname(self.dir)
         with os_helper.change_cwd(path=self.dir):
-            rv = shutil.which(self.file, path=base_dir)
+            rv = shutil.which(self.file, path=self.other_dir)
             # non-win32: shouldn't match in the current directory.
             self.assertIsNone(rv)
 
@@ -2367,57 +2378,32 @@ def test_cwd_win32(self):
         base_dir = os.path.dirname(self.dir)
         with os_helper.change_cwd(path=self.dir):
             with unittest.mock.patch('shutil._win_path_needs_curdir', return_value=True):
-                rv = shutil.which(self.file, path=base_dir)
+                rv = shutil.which(self.file, path=self.other_dir)
                 # Current directory implicitly on PATH
                 self.assertEqual(rv, os.path.join(self.curdir, self.file))
             with unittest.mock.patch('shutil._win_path_needs_curdir', return_value=False):
-                rv = shutil.which(self.file, path=base_dir)
+                rv = shutil.which(self.file, path=self.other_dir)
                 # Current directory not on PATH
                 self.assertIsNone(rv)
 
     @unittest.skipUnless(sys.platform == "win32",
                          "test is for win32")
     def test_cwd_win32_added_before_all_other_path(self):
-        base_dir = pathlib.Path(os.fsdecode(self.dir))
-
-        elsewhere_in_path_dir = base_dir / 'dir1'
-        elsewhere_in_path_dir.mkdir()
-        match_elsewhere_in_path = elsewhere_in_path_dir / 'hello.exe'
-        match_elsewhere_in_path.touch()
-
-        exe_in_cwd = base_dir / 'hello.exe'
-        exe_in_cwd.touch()
-
-        with os_helper.change_cwd(path=base_dir):
-            with unittest.mock.patch('shutil._win_path_needs_curdir', return_value=True):
-                rv = shutil.which('hello.exe', path=elsewhere_in_path_dir)
-
-            self.assertEqual(os.path.abspath(rv), os.path.abspath(exe_in_cwd))
-
-    @unittest.skipUnless(sys.platform == "win32",
-                         "test is for win32")
-    def test_pathext_match_before_path_full_match(self):
-        base_dir = pathlib.Path(os.fsdecode(self.dir))
-        dir1 = base_dir / 'dir1'
-        dir2 = base_dir / 'dir2'
-        dir1.mkdir()
-        dir2.mkdir()
-
-        pathext_match = dir1 / 'hello.com.exe'
-        path_match = dir2 / 'hello.com'
-        pathext_match.touch()
-        path_match.touch()
-
-        test_path = os.pathsep.join([str(dir1), str(dir2)])
-        assert os.path.basename(shutil.which(
-            'hello.com', path=test_path, mode = os.F_OK
-        )).lower() == 'hello.com.exe'
+        other_file_path = os.path.join(self.other_dir, self.file)
+        self.create_file(other_file_path)
+        with unittest.mock.patch('shutil._win_path_needs_curdir', return_value=True):
+            with os_helper.change_cwd(path=self.dir):
+                rv = shutil.which(self.file, path=self.other_dir)
+                self.assertEqual(rv, os.path.join(self.curdir, self.file))
+            with os_helper.change_cwd(path=self.other_dir):
+                rv = shutil.which(self.file, path=self.dir)
+                self.assertEqual(rv, os.path.join(self.curdir, self.file))
 
     @os_helper.skip_if_dac_override
     def test_non_matching_mode(self):
         # Set the file read-only and ask for writeable files.
-        os.chmod(self.temp_file.name, stat.S_IREAD)
-        if os.access(self.temp_file.name, os.W_OK):
+        os.chmod(self.filepath, stat.S_IREAD)
+        if os.access(self.filepath, os.W_OK):
             self.skipTest("can't set the file read-only")
         rv = shutil.which(self.file, path=self.dir, mode=os.W_OK)
         self.assertIsNone(rv)
@@ -2439,13 +2425,13 @@ def test_pathext_checking(self):
         # Ask for the file without the ".exe" extension, then ensure that
         # it gets found properly with the extension.
         rv = shutil.which(self.file[:-4], path=self.dir)
-        self.assertEqual(rv, self.temp_file.name[:-4] + self.ext)
+        self.assertEqual(rv, self.filepath[:-4] + self.ext)
 
     def test_environ_path(self):
         with os_helper.EnvironmentVarGuard() as env:
             env['PATH'] = self.env_path
             rv = shutil.which(self.file)
-            self.assertEqual(rv, self.temp_file.name)
+            self.assertEqual(rv, self.filepath)
 
     def test_environ_path_empty(self):
         # PATH='': no match
@@ -2459,12 +2445,9 @@ def test_environ_path_empty(self):
                 self.assertIsNone(rv)
 
     def test_environ_path_cwd(self):
-        expected_cwd = os.path.basename(self.temp_file.name)
+        expected_cwd = self.file
         if sys.platform == "win32":
-            curdir = os.curdir
-            if isinstance(expected_cwd, bytes):
-                curdir = os.fsencode(curdir)
-            expected_cwd = os.path.join(curdir, expected_cwd)
+            expected_cwd = os.path.join(self.curdir, expected_cwd)
 
         # PATH=':': explicitly looks in the current directory
         with os_helper.EnvironmentVarGuard() as env:
@@ -2489,14 +2472,14 @@ def test_environ_path_missing(self):
                                      create=True), \
                  support.swap_attr(os, 'defpath', self.dir):
                 rv = shutil.which(self.file)
-            self.assertEqual(rv, self.temp_file.name)
+            self.assertEqual(rv, self.filepath)
 
             # with confstr
             with unittest.mock.patch('os.confstr', return_value=self.dir, \
                                      create=True), \
                  support.swap_attr(os, 'defpath', ''):
                 rv = shutil.which(self.file)
-            self.assertEqual(rv, self.temp_file.name)
+            self.assertEqual(rv, self.filepath)
 
     def test_empty_path(self):
         base_dir = os.path.dirname(self.dir)
@@ -2514,50 +2497,88 @@ def test_empty_path_no_PATH(self):
 
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext(self):
-        ext = self.to_text_type(".xyz")
-        temp_filexyz = tempfile.NamedTemporaryFile(dir=self.temp_dir,
-                                                   prefix=self.to_text_type("Tmp2"), suffix=ext)
-        os.chmod(temp_filexyz.name, stat.S_IXUSR)
-        self.addCleanup(temp_filexyz.close)
-
-        # strip path and extension
-        program = os.path.basename(temp_filexyz.name)
-        program = os.path.splitext(program)[0]
-
+        ext = '.xyz'
+        cmd = self.to_text_type(TESTFN2)
+        cmdext = cmd + self.to_text_type(ext)
+        filepath = os.path.join(self.dir, cmdext)
+        self.create_file(filepath)
         with os_helper.EnvironmentVarGuard() as env:
-            env['PATHEXT'] = ext if isinstance(ext, str) else ext.decode()
-            rv = shutil.which(program, path=self.temp_dir)
-            self.assertEqual(rv, temp_filexyz.name)
+            env['PATHEXT'] = ext
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)
+            self.assertEqual(shutil.which(cmdext, path=self.dir), filepath)
 
     # Issue 40592: See https://bugs.python.org/issue40592
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext_with_empty_str(self):
-        ext = self.to_text_type(".xyz")
-        temp_filexyz = tempfile.NamedTemporaryFile(dir=self.temp_dir,
-                                                   prefix=self.to_text_type("Tmp2"), suffix=ext)
-        self.addCleanup(temp_filexyz.close)
+        ext = '.xyz'
+        cmd = self.to_text_type(TESTFN2)
+        cmdext = cmd + self.to_text_type(ext)
+        filepath = os.path.join(self.dir, cmdext)
+        self.create_file(filepath)
+        with os_helper.EnvironmentVarGuard() as env:
+            env['PATHEXT'] = ext + ';'  # note the ;
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)
+            self.assertEqual(shutil.which(cmdext, path=self.dir), filepath)
 
-        # strip path and extension
-        program = os.path.basename(temp_filexyz.name)
-        program = os.path.splitext(program)[0]
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_pathext_with_multidot_extension(self):
+        ext = '.foo.bar'
+        cmd = self.to_text_type(TESTFN2)
+        cmdext = cmd + self.to_text_type(ext)
+        filepath = os.path.join(self.dir, cmdext)
+        self.create_file(filepath)
+        with os_helper.EnvironmentVarGuard() as env:
+            env['PATHEXT'] = ext
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)
+            self.assertEqual(shutil.which(cmdext, path=self.dir), filepath)
 
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_pathext_with_null_extension(self):
+        cmd = self.to_text_type(TESTFN2)
+        cmddot = cmd + self.to_text_type('.')
+        filepath = os.path.join(self.dir, cmd)
+        self.create_file(filepath)
         with os_helper.EnvironmentVarGuard() as env:
-            env['PATHEXT'] = f"{ext if isinstance(ext, str) else ext.decode()};"  # note the ;
-            rv = shutil.which(program, path=self.temp_dir)
-            self.assertEqual(rv, temp_filexyz.name)
+            env['PATHEXT'] = '.xyz'
+            self.assertIsNone(shutil.which(cmd, path=self.dir))
+            self.assertIsNone(shutil.which(cmddot, path=self.dir))
+            env['PATHEXT'] = '.xyz;.'  # note the .
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)
+            self.assertEqual(shutil.which(cmddot, path=self.dir),
+                             filepath + self.to_text_type('.'))
+            env['PATHEXT'] = '.xyz;..'  # multiple dots
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)
+            self.assertEqual(shutil.which(cmddot, path=self.dir),
+                             filepath + self.to_text_type('.'))
+
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_pathext_extension_ends_with_dot(self):
+        ext = '.xyz'
+        cmd = self.to_text_type(TESTFN2)
+        cmdext = cmd + self.to_text_type(ext)
+        dot = self.to_text_type('.')
+        filepath = os.path.join(self.dir, cmdext)
+        self.create_file(filepath)
+        with os_helper.EnvironmentVarGuard() as env:
+            env['PATHEXT'] = ext + '.'
+            self.assertEqual(shutil.which(cmd, path=self.dir), filepath)  # cmd.exe hangs here
+            self.assertEqual(shutil.which(cmdext, path=self.dir), filepath)
+            self.assertIsNone(shutil.which(cmd + dot, path=self.dir))
+            self.assertIsNone(shutil.which(cmdext + dot, path=self.dir))
 
     # See GH-75586
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
     def test_pathext_applied_on_files_in_path(self):
+        ext = '.xyz'
+        cmd = self.to_text_type(TESTFN2)
+        cmdext = cmd + self.to_text_type(ext)
+        filepath = os.path.join(self.dir, cmdext)
+        self.create_file(filepath)
         with os_helper.EnvironmentVarGuard() as env:
-            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
-            env["PATHEXT"] = ".test"
-
-            test_path = os.path.join(self.temp_dir, self.to_text_type("test_program.test"))
-            open(test_path, 'w').close()
-            os.chmod(test_path, 0o755)
-
-            self.assertEqual(shutil.which(self.to_text_type("test_program")), test_path)
+            env["PATH"] = os.fsdecode(self.dir)
+            env["PATHEXT"] = ext
+            self.assertEqual(shutil.which(cmd), filepath)
+            self.assertEqual(shutil.which(cmdext), filepath)
 
     # See GH-75586
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
@@ -2573,49 +2594,107 @@ def test_win_path_needs_curdir(self):
             self.assertFalse(shutil._win_path_needs_curdir('dontcare', os.X_OK))
             need_curdir_mock.assert_called_once_with('dontcare')
 
-    # See GH-109590
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
-    def test_pathext_preferred_for_execute(self):
-        with os_helper.EnvironmentVarGuard() as env:
-            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
-            env["PATHEXT"] = ".test"
+    def test_same_dir_with_pathext_extension(self):
+        cmd = self.file  # with .exe extension
+        # full match
+        self.assertNormEqual(shutil.which(cmd, path=self.dir), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=self.dir, mode=os.F_OK),
+                             self.filepath)
+
+        cmd2 = cmd + self.to_text_type('.com')  # with .exe.com extension
+        other_file_path = os.path.join(self.dir, cmd2)
+        self.create_file(other_file_path)
+
+        # full match
+        self.assertNormEqual(shutil.which(cmd, path=self.dir), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=self.dir, mode=os.F_OK),
+                             self.filepath)
+        self.assertNormEqual(shutil.which(cmd2, path=self.dir), other_file_path)
+        self.assertNormEqual(shutil.which(cmd2, path=self.dir, mode=os.F_OK),
+                             other_file_path)
 
-            exe = os.path.join(self.temp_dir, self.to_text_type("test.exe"))
-            open(exe, 'w').close()
-            os.chmod(exe, 0o755)
-
-            # default behavior allows a direct match if nothing in PATHEXT matches
-            self.assertEqual(shutil.which(self.to_text_type("test.exe")), exe)
-
-            dot_test = os.path.join(self.temp_dir, self.to_text_type("test.exe.test"))
-            open(dot_test, 'w').close()
-            os.chmod(dot_test, 0o755)
-
-            # now we have a PATHEXT match, so it take precedence
-            self.assertEqual(shutil.which(self.to_text_type("test.exe")), dot_test)
-
-            # but if we don't use os.X_OK we don't change the order based off PATHEXT
-            # and therefore get the direct match.
-            self.assertEqual(shutil.which(self.to_text_type("test.exe"), mode=os.F_OK), exe)
-
-    # See GH-109590
     @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
-    def test_pathext_given_extension_preferred(self):
-        with os_helper.EnvironmentVarGuard() as env:
-            env["PATH"] = self.temp_dir if isinstance(self.temp_dir, str) else self.temp_dir.decode()
-            env["PATHEXT"] = ".exe2;.exe"
+    def test_same_dir_without_pathext_extension(self):
+        cmd = self.file[:-4]  # without .exe extension
+        # pathext match
+        self.assertNormEqual(shutil.which(cmd, path=self.dir), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=self.dir, mode=os.F_OK),
+                             self.filepath)
+
+        # without extension
+        other_file_path = os.path.join(self.dir, cmd)
+        self.create_file(other_file_path)
+
+        # pathext match if mode contains X_OK
+        self.assertNormEqual(shutil.which(cmd, path=self.dir), self.filepath)
+        # full match
+        self.assertNormEqual(shutil.which(cmd, path=self.dir, mode=os.F_OK),
+                             other_file_path)
+        self.assertNormEqual(shutil.which(self.file, path=self.dir), self.filepath)
+        self.assertNormEqual(shutil.which(self.file, path=self.dir, mode=os.F_OK),
+                             self.filepath)
 
-            exe = os.path.join(self.temp_dir, self.to_text_type("test.exe"))
-            open(exe, 'w').close()
-            os.chmod(exe, 0o755)
-
-            exe2 = os.path.join(self.temp_dir, self.to_text_type("test.exe2"))
-            open(exe2, 'w').close()
-            os.chmod(exe2, 0o755)
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_dir_order_with_pathext_extension(self):
+        cmd = self.file  # with .exe extension
+        search_path = os.pathsep.join([os.fsdecode(self.other_dir),
+                                       os.fsdecode(self.dir)])
+        # full match in the second directory
+        self.assertNormEqual(shutil.which(cmd, path=search_path), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                             self.filepath)
+
+        cmd2 = cmd + self.to_text_type('.com')  # with .exe.com extension
+        other_file_path = os.path.join(self.other_dir, cmd2)
+        self.create_file(other_file_path)
+
+        # pathext match in the first directory
+        self.assertNormEqual(shutil.which(cmd, path=search_path), other_file_path)
+        self.assertNormEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                             other_file_path)
+        # full match in the first directory
+        self.assertNormEqual(shutil.which(cmd2, path=search_path), other_file_path)
+        self.assertNormEqual(shutil.which(cmd2, path=search_path, mode=os.F_OK),
+                             other_file_path)
+
+        # full match in the first directory
+        search_path = os.pathsep.join([os.fsdecode(self.dir),
+                                       os.fsdecode(self.other_dir)])
+        self.assertEqual(shutil.which(cmd, path=search_path), self.filepath)
+        self.assertEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                         self.filepath)
 
-            # even though .exe2 is preferred in PATHEXT, we matched directly to test.exe
-            self.assertEqual(shutil.which(self.to_text_type("test.exe")), exe)
-            self.assertEqual(shutil.which(self.to_text_type("test")), exe2)
+    @unittest.skipUnless(sys.platform == "win32", 'test specific to Windows')
+    def test_dir_order_without_pathext_extension(self):
+        cmd = self.file[:-4]  # without .exe extension
+        search_path = os.pathsep.join([os.fsdecode(self.other_dir),
+                                       os.fsdecode(self.dir)])
+        # pathext match in the second directory
+        self.assertNormEqual(shutil.which(cmd, path=search_path), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                             self.filepath)
+
+        # without extension
+        other_file_path = os.path.join(self.other_dir, cmd)
+        self.create_file(other_file_path)
+
+        # pathext match in the second directory
+        self.assertNormEqual(shutil.which(cmd, path=search_path), self.filepath)
+        # full match in the first directory
+        self.assertNormEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                             other_file_path)
+        # full match in the second directory
+        self.assertNormEqual(shutil.which(self.file, path=search_path), self.filepath)
+        self.assertNormEqual(shutil.which(self.file, path=search_path, mode=os.F_OK),
+                             self.filepath)
+
+        # pathext match in the first directory
+        search_path = os.pathsep.join([os.fsdecode(self.dir),
+                                       os.fsdecode(self.other_dir)])
+        self.assertNormEqual(shutil.which(cmd, path=search_path), self.filepath)
+        self.assertNormEqual(shutil.which(cmd, path=search_path, mode=os.F_OK),
+                             self.filepath)
 
 
 class TestWhichBytes(TestWhich):
@@ -2623,18 +2702,12 @@ def setUp(self):
         TestWhich.setUp(self)
         self.dir = os.fsencode(self.dir)
         self.file = os.fsencode(self.file)
-        self.temp_file.name = os.fsencode(self.temp_file.name)
-        self.temp_dir = os.fsencode(self.temp_dir)
+        self.filepath = os.fsencode(self.filepath)
+        self.other_dir = os.fsencode(self.other_dir)
         self.curdir = os.fsencode(self.curdir)
         self.ext = os.fsencode(self.ext)
 
-    def to_text_type(self, s):
-        '''
-        In this class we're testing with bytes, so convert s to a bytes
-        '''
-        if isinstance(s, str):
-            return s.encode()
-        return s
+    to_text_type = staticmethod(os.fsencode)
 
 
 class TestMove(BaseTest, unittest.TestCase):
@@ -2645,8 +2718,7 @@ def setUp(self):
         self.dst_dir = self.mkdtemp()
         self.src_file = os.path.join(self.src_dir, filename)
         self.dst_file = os.path.join(self.dst_dir, filename)
-        with open(self.src_file, "wb") as f:
-            f.write(b"spam")
+        create_file(self.src_file, b"spam")
 
     def _check_move_file(self, src, dst, real_dst):
         with open(src, "rb") as f:
@@ -2672,12 +2744,12 @@ def test_move_file_to_dir(self):
 
     def test_move_file_to_dir_pathlike_src(self):
         # Move a pathlike file to another location on the same filesystem.
-        src = pathlib.Path(self.src_file)
+        src = FakePath(self.src_file)
         self._check_move_file(src, self.dst_dir, self.dst_file)
 
     def test_move_file_to_dir_pathlike_dst(self):
         # Move a file to another pathlike location on the same filesystem.
-        dst = pathlib.Path(self.dst_dir)
+        dst = FakePath(self.dst_dir)
         self._check_move_file(self.src_file, dst, self.dst_file)
 
     @mock_rename
@@ -2724,8 +2796,7 @@ def test_move_dir_altsep_to_dir(self):
 
     def test_existing_file_inside_dest_dir(self):
         # A file with the same name inside the destination dir already exists.
-        with open(self.dst_file, "wb"):
-            pass
+        create_file(self.dst_file)
         self.assertRaises(shutil.Error, shutil.move, self.src_file, self.dst_dir)
 
     def test_dont_move_dir_in_itself(self):
@@ -3140,8 +3211,7 @@ def test_empty_file(self):
         dstname = TESTFN + 'dst'
         self.addCleanup(lambda: os_helper.unlink(srcname))
         self.addCleanup(lambda: os_helper.unlink(dstname))
-        with open(srcname, "wb"):
-            pass
+        create_file(srcname)
 
         with open(srcname, "rb") as src:
             with open(dstname, "wb") as dst:
@@ -3264,7 +3334,7 @@ def test_blocksize_arg(self):
             self.assertEqual(blocksize, os.path.getsize(TESTFN))
             # ...unless we're dealing with a small file.
             os_helper.unlink(TESTFN2)
-            write_file(TESTFN2, b"hello", binary=True)
+            create_file(TESTFN2, b"hello")
             self.addCleanup(os_helper.unlink, TESTFN2 + '3')
             self.assertRaises(ZeroDivisionError,
                               shutil.copyfile, TESTFN2, TESTFN2 + '3')
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 61fb047caf6dab..08f18a99f8d0e3 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -123,6 +123,8 @@ def __repr__(self):
         self.assertEqual(signal.getsignal(signal.SIGHUP), hup)
         self.assertEqual(0, argument.repr_count)
 
+    @unittest.skipIf(sys.platform.startswith("netbsd"),
+                     "gh-124083: strsignal is not supported on NetBSD")
     def test_strsignal(self):
         self.assertIn("Interrupt", signal.strsignal(signal.SIGINT))
         self.assertIn("Terminated", signal.strsignal(signal.SIGTERM))
@@ -698,7 +700,7 @@ def handler(signum, frame):
 @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
 class SiginterruptTest(unittest.TestCase):
 
-    def readpipe_interrupted(self, interrupt):
+    def readpipe_interrupted(self, interrupt, timeout=support.SHORT_TIMEOUT):
         """Perform a read during which a signal will arrive.  Return True if the
         read is interrupted by the signal and raises an exception.  Return False
         if it returns normally.
@@ -746,7 +748,7 @@ def handler(signum, frame):
                 # wait until the child process is loaded and has started
                 first_line = process.stdout.readline()
 
-                stdout, stderr = process.communicate(timeout=support.SHORT_TIMEOUT)
+                stdout, stderr = process.communicate(timeout=timeout)
             except subprocess.TimeoutExpired:
                 process.kill()
                 return False
@@ -777,7 +779,7 @@ def test_siginterrupt_off(self):
         # If a signal handler is installed and siginterrupt is called with
         # a false value for the second argument, when that signal arrives, it
         # does not interrupt a syscall that's in progress.
-        interrupted = self.readpipe_interrupted(False)
+        interrupted = self.readpipe_interrupted(False, timeout=2)
         self.assertFalse(interrupted)
 
 
@@ -1325,15 +1327,18 @@ def test_stress_delivery_simultaneous(self):
         def handler(signum, frame):
             sigs.append(signum)
 
-        self.setsig(signal.SIGUSR1, handler)
+        # On Android, SIGUSR1 is unreliable when used in close proximity to
+        # another signal – see Android/testbed/app/src/main/python/main.py.
+        # So we use a different signal.
+        self.setsig(signal.SIGUSR2, handler)
         self.setsig(signal.SIGALRM, handler)  # for ITIMER_REAL
 
         expected_sigs = 0
         while expected_sigs < N:
             # Hopefully the SIGALRM will be received somewhere during
-            # initial processing of SIGUSR1.
+            # initial processing of SIGUSR2.
             signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5)
-            os.kill(os.getpid(), signal.SIGUSR1)
+            os.kill(os.getpid(), signal.SIGUSR2)
 
             expected_sigs += 2
             # Wait for handlers to run to avoid signal coalescing
diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index 0502181854f52b..2df17b9fe1c437 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -328,13 +328,13 @@ def test_getsitepackages(self):
             if sys.platlibdir != "lib":
                 self.assertEqual(len(dirs), 2)
                 wanted = os.path.join('xoxo', sys.platlibdir,
-                                      'python%d.%d' % sys.version_info[:2],
+                                      f'python{sysconfig._get_python_version_abi()}',
                                       'site-packages')
                 self.assertEqual(dirs[0], wanted)
             else:
                 self.assertEqual(len(dirs), 1)
             wanted = os.path.join('xoxo', 'lib',
-                                  'python%d.%d' % sys.version_info[:2],
+                                  f'python{sysconfig._get_python_version_abi()}',
                                   'site-packages')
             self.assertEqual(dirs[-1], wanted)
         else:
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 0c4b3bb2ad4d81..c68a2f234d1e99 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -47,6 +47,7 @@
 # test unicode string and carriage return
 MSG = 'Michael Gilfix was here\u1234\r\n'.encode('utf-8')
 
+VMADDR_CID_LOCAL = 1
 VSOCKPORT = 1234
 AIX = platform.system() == "AIX"
 WSL = "microsoft-standard-WSL" in platform.release()
@@ -160,8 +161,8 @@ def _have_socket_qipcrtr():
 
 def _have_socket_vsock():
     """Check whether AF_VSOCK sockets are supported on this host."""
-    ret = get_cid() is not None
-    return ret
+    cid = get_cid()
+    return (cid is not None)
 
 
 def _have_socket_bluetooth():
@@ -520,8 +521,6 @@ def clientTearDown(self):
 @unittest.skipIf(WSL, 'VSOCK does not work on Microsoft WSL')
 @unittest.skipUnless(HAVE_SOCKET_VSOCK,
           'VSOCK sockets required for this test.')
-@unittest.skipUnless(get_cid() != 2,
-          "This test can only be run on a virtual guest.")
 class ThreadedVSOCKSocketStreamTest(unittest.TestCase, ThreadableTest):
 
     def __init__(self, methodName='runTest'):
@@ -543,10 +542,16 @@ def clientSetUp(self):
         self.cli = socket.socket(socket.AF_VSOCK, socket.SOCK_STREAM)
         self.addCleanup(self.cli.close)
         cid = get_cid()
+        if cid in (socket.VMADDR_CID_HOST, socket.VMADDR_CID_ANY):
+            # gh-119461: Use the local communication address (loopback)
+            cid = VMADDR_CID_LOCAL
         self.cli.connect((cid, VSOCKPORT))
 
     def testStream(self):
-        msg = self.conn.recv(1024)
+        try:
+            msg = self.conn.recv(1024)
+        except PermissionError as exc:
+            self.skipTest(repr(exc))
         self.assertEqual(msg, MSG)
 
     def _testStream(self):
@@ -591,19 +596,27 @@ class SocketPairTest(unittest.TestCase, ThreadableTest):
     def __init__(self, methodName='runTest'):
         unittest.TestCase.__init__(self, methodName=methodName)
         ThreadableTest.__init__(self)
+        self.cli = None
+        self.serv = None
+
+    def socketpair(self):
+        # To be overridden by some child classes.
+        return socket.socketpair()
 
     def setUp(self):
-        self.serv, self.cli = socket.socketpair()
+        self.serv, self.cli = self.socketpair()
 
     def tearDown(self):
-        self.serv.close()
+        if self.serv:
+            self.serv.close()
         self.serv = None
 
     def clientSetUp(self):
         pass
 
     def clientTearDown(self):
-        self.cli.close()
+        if self.cli:
+            self.cli.close()
         self.cli = None
         ThreadableTest.clientTearDown(self)
 
@@ -1660,7 +1673,7 @@ def test_getaddrinfo_int_port_overflow(self):
         try:
             socket.getaddrinfo(None, ULONG_MAX + 1, type=socket.SOCK_STREAM)
         except OverflowError:
-            # Platforms differ as to what values consitute a getaddrinfo() error
+            # Platforms differ as to what values constitute a getaddrinfo() error
             # return. Some fail for LONG_MAX+1, others ULONG_MAX+1, and Windows
             # silently accepts such huge "port" aka "service" numeric values.
             self.fail("Either no error or socket.gaierror expected.")
@@ -4850,6 +4863,112 @@ def _testSend(self):
         self.assertEqual(msg, MSG)
 
 
+class PurePythonSocketPairTest(SocketPairTest):
+    # Explicitly use socketpair AF_INET or AF_INET6 to ensure that is the
+    # code path we're using regardless platform is the pure python one where
+    # `_socket.socketpair` does not exist.  (AF_INET does not work with
+    # _socket.socketpair on many platforms).
+    def socketpair(self):
+        # called by super().setUp().
+        try:
+            return socket.socketpair(socket.AF_INET6)
+        except OSError:
+            return socket.socketpair(socket.AF_INET)
+
+    # Local imports in this class make for easy security fix backporting.
+
+    def setUp(self):
+        if hasattr(_socket, "socketpair"):
+            self._orig_sp = socket.socketpair
+            # This forces the version using the non-OS provided socketpair
+            # emulation via an AF_INET socket in Lib/socket.py.
+            socket.socketpair = socket._fallback_socketpair
+        else:
+            # This platform already uses the non-OS provided version.
+            self._orig_sp = None
+        super().setUp()
+
+    def tearDown(self):
+        super().tearDown()
+        if self._orig_sp is not None:
+            # Restore the default socket.socketpair definition.
+            socket.socketpair = self._orig_sp
+
+    def test_recv(self):
+        msg = self.serv.recv(1024)
+        self.assertEqual(msg, MSG)
+
+    def _test_recv(self):
+        self.cli.send(MSG)
+
+    def test_send(self):
+        self.serv.send(MSG)
+
+    def _test_send(self):
+        msg = self.cli.recv(1024)
+        self.assertEqual(msg, MSG)
+
+    def test_ipv4(self):
+        cli, srv = socket.socketpair(socket.AF_INET)
+        cli.close()
+        srv.close()
+
+    def _test_ipv4(self):
+        pass
+
+    @unittest.skipIf(not hasattr(_socket, 'IPPROTO_IPV6') or
+                     not hasattr(_socket, 'IPV6_V6ONLY'),
+                     "IPV6_V6ONLY option not supported")
+    @unittest.skipUnless(socket_helper.IPV6_ENABLED, 'IPv6 required for this test')
+    def test_ipv6(self):
+        cli, srv = socket.socketpair(socket.AF_INET6)
+        cli.close()
+        srv.close()
+
+    def _test_ipv6(self):
+        pass
+
+    def test_injected_authentication_failure(self):
+        orig_getsockname = socket.socket.getsockname
+        inject_sock = None
+
+        def inject_getsocketname(self):
+            nonlocal inject_sock
+            sockname = orig_getsockname(self)
+            # Connect to the listening socket ahead of the
+            # client socket.
+            if inject_sock is None:
+                inject_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+                inject_sock.setblocking(False)
+                try:
+                    inject_sock.connect(sockname[:2])
+                except (BlockingIOError, InterruptedError):
+                    pass
+                inject_sock.setblocking(True)
+            return sockname
+
+        sock1 = sock2 = None
+        try:
+            socket.socket.getsockname = inject_getsocketname
+            with self.assertRaises(OSError):
+                sock1, sock2 = socket.socketpair()
+        finally:
+            socket.socket.getsockname = orig_getsockname
+            if inject_sock:
+                inject_sock.close()
+            if sock1:  # This cleanup isn't needed on a successful test.
+                sock1.close()
+            if sock2:
+                sock2.close()
+
+    def _test_injected_authentication_failure(self):
+        # No-op.  Exists for base class threading infrastructure to call.
+        # We could refactor this test into its own lesser class along with the
+        # setUp and tearDown code to construct an ideal; it is simpler to keep
+        # it here and live with extra overhead one this _one_ failure test.
+        pass
+
+
 class NonBlockingTCPTests(ThreadedTCPSocketTest):
 
     def __init__(self, methodName='runTest'):
@@ -5010,6 +5129,39 @@ def _testRecv(self):
         # send data: recv() will no longer block
         self.cli.sendall(MSG)
 
+    def testLargeTimeout(self):
+        # gh-126876: Check that a timeout larger than INT_MAX is replaced with
+        # INT_MAX in the poll() code path. The following assertion must not
+        # fail: assert(INT_MIN <= ms && ms <= INT_MAX).
+        if _testcapi is not None:
+            large_timeout = _testcapi.INT_MAX + 1
+        else:
+            large_timeout = 2147483648
+
+        # test recv() with large timeout
+        conn, addr = self.serv.accept()
+        self.addCleanup(conn.close)
+        try:
+            conn.settimeout(large_timeout)
+        except OverflowError:
+            # On Windows, settimeout() fails with OverflowError, whereas
+            # we want to test recv(). Just give up silently.
+            return
+        msg = conn.recv(len(MSG))
+
+    def _testLargeTimeout(self):
+        # test sendall() with large timeout
+        if _testcapi is not None:
+            large_timeout = _testcapi.INT_MAX + 1
+        else:
+            large_timeout = 2147483648
+        self.cli.connect((HOST, self.port))
+        try:
+            self.cli.settimeout(large_timeout)
+        except OverflowError:
+            return
+        self.cli.sendall(MSG)
+
 
 class FileObjectClassTestCase(SocketConnectedTest):
     """Unit tests for the object returned by socket.makefile()
@@ -5212,6 +5364,8 @@ def _testMakefileClose(self):
         self.write_file.write(self.write_msg)
         self.write_file.flush()
 
+    @unittest.skipUnless(hasattr(sys, 'getrefcount'),
+                         'test needs sys.getrefcount()')
     def testMakefileCloseSocketDestroy(self):
         refcount_before = sys.getrefcount(self.cli_conn)
         self.read_file.close()
diff --git a/Lib/test/test_sqlite3/test_dump.py b/Lib/test/test_sqlite3/test_dump.py
index d508f238f84fb5..550cea41976441 100644
--- a/Lib/test/test_sqlite3/test_dump.py
+++ b/Lib/test/test_sqlite3/test_dump.py
@@ -10,6 +10,7 @@ class DumpTests(MemoryDatabaseMixin, unittest.TestCase):
 
     def test_table_dump(self):
         expected_sqls = [
+                "PRAGMA foreign_keys=OFF;",
                 """CREATE TABLE "index"("index" blob);"""
                 ,
                 """INSERT INTO "index" VALUES(X'01');"""
@@ -48,7 +49,7 @@ def test_table_dump(self):
         expected_sqls = [
             "PRAGMA foreign_keys=OFF;",
             "BEGIN TRANSACTION;",
-            *expected_sqls,
+            *expected_sqls[1:],
             "COMMIT;",
         ]
         [self.assertEqual(expected_sqls[i], actual_sqls[i])
diff --git a/Lib/test/test_sqlite3/test_regression.py b/Lib/test/test_sqlite3/test_regression.py
index db4e13222da9da..50cced3891d13a 100644
--- a/Lib/test/test_sqlite3/test_regression.py
+++ b/Lib/test/test_sqlite3/test_regression.py
@@ -433,6 +433,7 @@ def test_table_lock_cursor_dealloc(self):
             con.commit()
             cur = con.execute("select t from t")
             del cur
+            support.gc_collect()
             con.execute("drop table t")
             con.commit()
 
@@ -448,6 +449,7 @@ def dup(v):
             con.create_function("dup", 1, dup)
             cur = con.execute("select dup(t) from t")
             del cur
+            support.gc_collect()
             con.execute("drop table t")
             con.commit()
 
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 6ec010d13f9e7e..7fdd2be78d5173 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -3,6 +3,8 @@
 import sys
 import unittest
 import unittest.mock
+from ast import literal_eval
+from threading import Thread
 from test import support
 from test.support import import_helper
 from test.support import os_helper
@@ -103,6 +105,7 @@ def data_file(*name):
 
 # Two keys and certs signed by the same CA (for SNI tests)
 SIGNED_CERTFILE = data_file("keycert3.pem")
+SINGED_CERTFILE_ONLY = data_file("cert3.pem")
 SIGNED_CERTFILE_HOSTNAME = 'localhost'
 
 SIGNED_CERTFILE_INFO = {
@@ -303,11 +306,19 @@ def test_wrap_socket(sock, *,
     return context.wrap_socket(sock, **kwargs)
 
 
+USE_SAME_TEST_CONTEXT = False
+_TEST_CONTEXT = None
+
 def testing_context(server_cert=SIGNED_CERTFILE, *, server_chain=True):
     """Create context
 
     client_context, server_context, hostname = testing_context()
     """
+    global _TEST_CONTEXT
+    if USE_SAME_TEST_CONTEXT:
+        if _TEST_CONTEXT is not None:
+            return _TEST_CONTEXT
+
     if server_cert == SIGNED_CERTFILE:
         hostname = SIGNED_CERTFILE_HOSTNAME
     elif server_cert == SIGNED_CERTFILE2:
@@ -325,6 +336,10 @@ def testing_context(server_cert=SIGNED_CERTFILE, *, server_chain=True):
     if server_chain:
         server_context.load_verify_locations(SIGNING_CA)
 
+    if USE_SAME_TEST_CONTEXT:
+        if _TEST_CONTEXT is not None:
+            _TEST_CONTEXT = client_context, server_context, hostname
+
     return client_context, server_context, hostname
 
 
@@ -2311,7 +2326,6 @@ def wrap_conn(self):
                 # See also http://erickt.github.io/blog/2014/11/19/adventures-in-debugging-a-potential-osx-kernel-bug/
                 if e.errno != errno.EPROTOTYPE and sys.platform != "darwin":
                     self.running = False
-                    self.server.stop()
                     self.close()
                 return False
             else:
@@ -2448,10 +2462,6 @@ def run(self):
                     self.close()
                     self.running = False
 
-                    # normally, we'd just stop here, but for the test
-                    # harness, we want to stop the server
-                    self.server.stop()
-
     def __init__(self, certificate=None, ssl_version=None,
                  certreqs=None, cacerts=None,
                  chatty=True, connectionchatty=False, starttls_server=False,
@@ -2485,21 +2495,33 @@ def __init__(self, certificate=None, ssl_version=None,
         self.conn_errors = []
         threading.Thread.__init__(self)
         self.daemon = True
+        self._in_context = False
 
     def __enter__(self):
+        if self._in_context:
+            raise ValueError('Re-entering ThreadedEchoServer context')
+        self._in_context = True
         self.start(threading.Event())
         self.flag.wait()
         return self
 
     def __exit__(self, *args):
+        assert self._in_context
+        self._in_context = False
         self.stop()
         self.join()
 
     def start(self, flag=None):
+        if not self._in_context:
+            raise ValueError(
+                'ThreadedEchoServer must be used as a context manager')
         self.flag = flag
         threading.Thread.start(self)
 
     def run(self):
+        if not self._in_context:
+            raise ValueError(
+                'ThreadedEchoServer must be used as a context manager')
         self.sock.settimeout(1.0)
         self.sock.listen(5)
         self.active = True
@@ -2826,6 +2848,44 @@ def test_echo(self):
                 'Cannot create a client socket with a PROTOCOL_TLS_SERVER context',
                 str(e.exception))
 
+    @unittest.skipUnless(support.Py_GIL_DISABLED, "test is only useful if the GIL is disabled")
+    def test_ssl_in_multiple_threads(self):
+        # See GH-124984: OpenSSL is not thread safe.
+        threads = []
+
+        global USE_SAME_TEST_CONTEXT
+        USE_SAME_TEST_CONTEXT = True
+        try:
+            for func in (
+                self.test_echo,
+                self.test_alpn_protocols,
+                self.test_getpeercert,
+                self.test_crl_check,
+                self.test_check_hostname_idn,
+                self.test_wrong_cert_tls12,
+                self.test_wrong_cert_tls13,
+            ):
+                # Be careful with the number of threads here.
+                # Too many can result in failing tests.
+                for num in range(5):
+                    with self.subTest(func=func, num=num):
+                        threads.append(Thread(target=func))
+
+            with threading_helper.catch_threading_exception() as cm:
+                for thread in threads:
+                    with self.subTest(thread=thread):
+                        thread.start()
+
+                for thread in threads:
+                    with self.subTest(thread=thread):
+                        thread.join()
+                if cm.exc_value is not None:
+                    # Some threads can skip their test
+                    if not isinstance(cm.exc_value, unittest.SkipTest):
+                        raise cm.exc_value
+        finally:
+            USE_SAME_TEST_CONTEXT = False
+
     def test_getpeercert(self):
         if support.verbose:
             sys.stdout.write("\n")
@@ -4720,6 +4780,40 @@ def test_internal_chain_client(self):
                     ssl.PEM_cert_to_DER_cert(pem), der
                 )
 
+    def test_certificate_chain(self):
+        client_context, server_context, hostname = testing_context(
+            server_chain=False
+        )
+        server = ThreadedEchoServer(context=server_context, chatty=False)
+
+        with open(SIGNING_CA) as f:
+            expected_ca_cert = ssl.PEM_cert_to_DER_cert(f.read())
+
+        with open(SINGED_CERTFILE_ONLY) as f:
+            expected_ee_cert = ssl.PEM_cert_to_DER_cert(f.read())
+
+        with server:
+            with client_context.wrap_socket(
+                socket.socket(),
+                server_hostname=hostname
+            ) as s:
+                s.connect((HOST, server.port))
+                vc = s.get_verified_chain()
+                self.assertEqual(len(vc), 2)
+
+                ee, ca = vc
+                self.assertIsInstance(ee, bytes)
+                self.assertIsInstance(ca, bytes)
+                self.assertEqual(expected_ca_cert, ca)
+                self.assertEqual(expected_ee_cert, ee)
+
+                uvc = s.get_unverified_chain()
+                self.assertEqual(len(uvc), 1)
+                self.assertIsInstance(uvc[0], bytes)
+
+                self.assertEqual(ee, uvc[0])
+                self.assertNotEqual(ee, ca)
+
     def test_internal_chain_server(self):
         client_context, server_context, hostname = testing_context()
         client_context.load_cert_chain(SIGNED_CERTFILE)
@@ -4969,7 +5063,7 @@ def non_linux_skip_if_other_okay_error(self, err):
             return  # Expect the full test setup to always work on Linux.
         if (isinstance(err, ConnectionResetError) or
             (isinstance(err, OSError) and err.errno == errno.EINVAL) or
-            re.search('wrong.version.number', getattr(err, "reason", ""), re.I)):
+            re.search('wrong.version.number', str(getattr(err, "reason", "")), re.I)):
             # On Windows the TCP RST leads to a ConnectionResetError
             # (ECONNRESET) which Linux doesn't appear to surface to userspace.
             # If wrap_socket() winds up on the "if connected:" path and doing
diff --git a/Lib/test/test_stable_abi_ctypes.py b/Lib/test/test_stable_abi_ctypes.py
index c06c285c5013a6..21e2c6f1d2c30e 100644
--- a/Lib/test/test_stable_abi_ctypes.py
+++ b/Lib/test/test_stable_abi_ctypes.py
@@ -267,7 +267,6 @@ def test_windows_feature_macros(self):
     "PyExc_IOError",
     "PyExc_ImportError",
     "PyExc_ImportWarning",
-    "PyExc_IncompleteInputError",
     "PyExc_IndentationError",
     "PyExc_IndexError",
     "PyExc_InterruptedError",
diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py
index 40680759d456ac..7b6037529a34d4 100644
--- a/Lib/test/test_statistics.py
+++ b/Lib/test/test_statistics.py
@@ -1072,7 +1072,7 @@ def test_no_inplace_modifications(self):
     def test_order_doesnt_matter(self):
         # Test that the order of data points doesn't change the result.
 
-        # CAUTION: due to floating point rounding errors, the result actually
+        # CAUTION: due to floating-point rounding errors, the result actually
         # may depend on the order. Consider this test representing an ideal.
         # To avoid this test failing, only test with exact values such as ints
         # or Fractions.
@@ -2446,6 +2446,7 @@ def test_kde_kernel_invcdfs(self):
                 for x in xarr:
                     self.assertAlmostEqual(invcdf(cdf(x)), x, places=5)
 
+    @support.requires_resource('cpu')
     def test_kde_random(self):
         kde_random = statistics.kde_random
         StatisticsError = statistics.StatisticsError
diff --git a/Lib/test/test_str.py b/Lib/test/test_str.py
index ea37eb5d96457d..c4f59224a6fe6f 100644
--- a/Lib/test/test_str.py
+++ b/Lib/test/test_str.py
@@ -7,6 +7,7 @@
 """
 import _string
 import codecs
+import datetime
 import itertools
 import operator
 import pickle
@@ -1665,7 +1666,7 @@ def test_startswith_endswith_errors(self):
             self.assertIn('str', exc)
             self.assertIn('tuple', exc)
 
-    @support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
+    @support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR', '')
     def test_format_float(self):
         # should not format with a comma, but always with C locale
         self.assertEqual('1.0', '%.1f' % 1.0)
@@ -1736,8 +1737,6 @@ def __str__(self):
             'character buffers are decoded to unicode'
         )
 
-        self.assertRaises(TypeError, str, 42, 42, 42)
-
     def test_constructor_keyword_args(self):
         """Pass various keyword argument combinations to the constructor."""
         # The object argument can be passed as a keyword.
@@ -1910,6 +1909,12 @@ def test_utf8_decode_invalid_sequences(self):
             self.assertRaises(UnicodeDecodeError,
                               (b'\xF4'+cb+b'\xBF\xBF').decode, 'utf-8')
 
+    def test_issue127903(self):
+        # gh-127903: ``_copy_characters`` crashes on DEBUG builds when
+        # there is nothing to copy.
+        d = datetime.datetime(2013, 11, 10, 14, 20, 59)
+        self.assertEqual(d.strftime('%z'), '')
+
     def test_issue8271(self):
         # Issue #8271: during the decoding of an invalid UTF-8 byte sequence,
         # only the start byte and the continuation byte(s) are now considered
@@ -2652,22 +2657,45 @@ def test_check_encoding_errors(self):
         self.assertEqual(proc.rc, 10, proc)
 
     def test_str_invalid_call(self):
-        check = lambda *a, **kw: self.assertRaises(TypeError, str, *a, **kw)
-
         # too many args
-        check(1, "", "", 1)
+        with self.assertRaisesRegex(TypeError, r"str expected at most 3 arguments, got 4"):
+            str("too", "many", "argu", "ments")
+        with self.assertRaisesRegex(TypeError, r"str expected at most 3 arguments, got 4"):
+            str(1, "", "", 1)
 
         # no such kw arg
-        check(test=1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) got an unexpected keyword argument 'test'"):
+            str(test=1)
 
         # 'encoding' must be str
-        check(1, encoding=1)
-        check(1, 1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'encoding' must be str, not int"):
+            str(1, 1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'encoding' must be str, not int"):
+            str(1, encoding=1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'encoding' must be str, not bytes"):
+            str(b"x", b"ascii")
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'encoding' must be str, not bytes"):
+            str(b"x", encoding=b"ascii")
 
         # 'errors' must be str
-        check(1, errors=1)
-        check(1, "", errors=1)
-        check(1, 1, 1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'encoding' must be str, not int"):
+            str(1, 1, 1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'errors' must be str, not int"):
+            str(1, errors=1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'errors' must be str, not int"):
+            str(1, "", errors=1)
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'errors' must be str, not bytes"):
+            str(b"x", "ascii", b"strict")
+        with self.assertRaisesRegex(TypeError, r"str\(\) argument 'errors' must be str, not bytes"):
+            str(b"x", "ascii", errors=b"strict")
+
+        # both positional and kwarg
+        with self.assertRaisesRegex(TypeError, r"argument for str\(\) given by name \('encoding'\) and position \(2\)"):
+            str(b"x", "utf-8", encoding="ascii")
+        with self.assertRaisesRegex(TypeError, r"str\(\) takes at most 3 arguments \(4 given\)"):
+            str(b"x", "utf-8", "ignore", encoding="ascii")
+        with self.assertRaisesRegex(TypeError, r"str\(\) takes at most 3 arguments \(4 given\)"):
+            str(b"x", "utf-8", "strict", errors="ignore")
 
 
 class StringModuleTest(unittest.TestCase):
diff --git a/Lib/test/test_string_literals.py b/Lib/test/test_string_literals.py
index 371e8193b3544d..c7c6f684cd33f0 100644
--- a/Lib/test/test_string_literals.py
+++ b/Lib/test/test_string_literals.py
@@ -131,7 +131,7 @@ def test_eval_str_invalid_escape(self):
         self.assertEqual(exc.lineno, 1)
         self.assertEqual(exc.offset, 1)
 
-        # Check that the warning is raised ony once if there are syntax errors
+        # Check that the warning is raised only once if there are syntax errors
 
         with warnings.catch_warnings(record=True) as w:
             warnings.simplefilter('always', category=SyntaxWarning)
diff --git a/Lib/test/test_strptime.py b/Lib/test/test_strptime.py
index 05c8afc907ad3c..9f5cfca9c7f124 100644
--- a/Lib/test/test_strptime.py
+++ b/Lib/test/test_strptime.py
@@ -5,13 +5,22 @@
 import locale
 import re
 import os
+import platform
 import sys
 from test import support
-from test.support import skip_if_buggy_ucrt_strfptime
+from test.support import warnings_helper
+from test.support import skip_if_buggy_ucrt_strfptime, run_with_locales
 from datetime import date as datetime_date
 
 import _strptime
 
+libc_ver = platform.libc_ver()
+if libc_ver[0] == 'glibc':
+    glibc_ver = tuple(map(int, libc_ver[1].split('.')))
+else:
+    glibc_ver = None
+
+
 class getlang_Tests(unittest.TestCase):
     """Test _getlang"""
     def test_basic(self):
@@ -120,7 +129,7 @@ def setUp(self):
 
     def test_pattern(self):
         # Test TimeRE.pattern
-        pattern_string = self.time_re.pattern(r"%a %A %d")
+        pattern_string = self.time_re.pattern(r"%a %A %d %Y")
         self.assertTrue(pattern_string.find(self.locale_time.a_weekday[2]) != -1,
                         "did not find abbreviated weekday in pattern string '%s'" %
                          pattern_string)
@@ -160,10 +169,11 @@ def test_compile(self):
                           found.group('b')))
         for directive in ('a','A','b','B','c','d','G','H','I','j','m','M','p',
                           'S','u','U','V','w','W','x','X','y','Y','Z','%'):
-            compiled = self.time_re.compile("%" + directive)
-            found = compiled.match(time.strftime("%" + directive))
+            fmt = "%d %Y" if directive == 'd' else "%" + directive
+            compiled = self.time_re.compile(fmt)
+            found = compiled.match(time.strftime(fmt))
             self.assertTrue(found, "Matching failed on '%s' using '%s' regex" %
-                                    (time.strftime("%" + directive),
+                                    (time.strftime(fmt),
                                      compiled.pattern))
 
     def test_blankpattern(self):
@@ -206,8 +216,8 @@ class StrptimeTests(unittest.TestCase):
     """Tests for _strptime.strptime."""
 
     def setUp(self):
-        """Create testing time tuple."""
-        self.time_tuple = time.gmtime()
+        """Create testing time tuples."""
+        self.time_tuple = time.localtime()
 
     def test_ValueError(self):
         # Make sure ValueError is raised when match fails or format is bad
@@ -282,59 +292,73 @@ def test_strptime_exception_context(self):
         # additional check for IndexError branch (issue #19545)
         with self.assertRaises(ValueError) as e:
             _strptime._strptime_time('19', '%Y %')
-        self.assertIs(e.exception.__suppress_context__, True)
+        self.assertIsNone(e.exception.__context__)
 
     def test_unconverteddata(self):
         # Check ValueError is raised when there is unconverted data
         self.assertRaises(ValueError, _strptime._strptime_time, "10 12", "%m")
 
-    def helper(self, directive, position):
+    def roundtrip(self, fmt, position, time_tuple=None):
         """Helper fxn in testing."""
-        strf_output = time.strftime("%" + directive, self.time_tuple)
-        strp_output = _strptime._strptime_time(strf_output, "%" + directive)
-        self.assertTrue(strp_output[position] == self.time_tuple[position],
-                        "testing of '%s' directive failed; '%s' -> %s != %s" %
-                         (directive, strf_output, strp_output[position],
-                          self.time_tuple[position]))
+        if time_tuple is None:
+            time_tuple = self.time_tuple
+        strf_output = time.strftime(fmt, time_tuple)
+        strp_output = _strptime._strptime_time(strf_output, fmt)
+        self.assertEqual(strp_output[position], time_tuple[position],
+                        "testing of %r format failed; %r -> %r != %r" %
+                         (fmt, strf_output, strp_output[position],
+                          time_tuple[position]))
+        if support.verbose >= 3:
+            print("testing of %r format: %r -> %r" %
+                  (fmt, strf_output, strp_output[position]))
 
     def test_year(self):
         # Test that the year is handled properly
-        for directive in ('y', 'Y'):
-            self.helper(directive, 0)
+        self.roundtrip('%Y', 0)
+        self.roundtrip('%y', 0)
+        self.roundtrip('%Y', 0, (1900, 1, 1, 0, 0, 0, 0, 1, 0))
+
         # Must also make sure %y values are correct for bounds set by Open Group
-        for century, bounds in ((1900, ('69', '99')), (2000, ('00', '68'))):
-            for bound in bounds:
-                strp_output = _strptime._strptime_time(bound, '%y')
-                expected_result = century + int(bound)
-                self.assertTrue(strp_output[0] == expected_result,
-                                "'y' test failed; passed in '%s' "
-                                "and returned '%s'" % (bound, strp_output[0]))
+        strptime = _strptime._strptime_time
+        self.assertEqual(strptime('00', '%y')[0], 2000)
+        self.assertEqual(strptime('68', '%y')[0], 2068)
+        self.assertEqual(strptime('69', '%y')[0], 1969)
+        self.assertEqual(strptime('99', '%y')[0], 1999)
 
     def test_month(self):
         # Test for month directives
-        for directive in ('B', 'b', 'm'):
-            self.helper(directive, 1)
+        self.roundtrip('%m', 1)
+
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP', 'he_IL', '')
+    def test_month_locale(self):
+        # Test for month directives
+        self.roundtrip('%B', 1)
+        self.roundtrip('%b', 1)
+        for m in range(1, 13):
+            self.roundtrip('%B', 1, (1900, m, 1, 0, 0, 0, 0, 1, 0))
+            self.roundtrip('%b', 1, (1900, m, 1, 0, 0, 0, 0, 1, 0))
 
     def test_day(self):
         # Test for day directives
-        self.helper('d', 2)
+        self.roundtrip('%d %Y', 2)
 
     def test_hour(self):
         # Test hour directives
-        self.helper('H', 3)
-        strf_output = time.strftime("%I %p", self.time_tuple)
-        strp_output = _strptime._strptime_time(strf_output, "%I %p")
-        self.assertTrue(strp_output[3] == self.time_tuple[3],
-                        "testing of '%%I %%p' directive failed; '%s' -> %s != %s" %
-                         (strf_output, strp_output[3], self.time_tuple[3]))
+        self.roundtrip('%H', 3)
+
+    # NB: Only works on locales with AM/PM
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'ja_JP')
+    def test_hour_locale(self):
+        # Test hour directives
+        self.roundtrip('%I %p', 3)
 
     def test_minute(self):
         # Test minute directives
-        self.helper('M', 4)
+        self.roundtrip('%M', 4)
 
     def test_second(self):
         # Test second directives
-        self.helper('S', 5)
+        self.roundtrip('%S', 5)
 
     def test_fraction(self):
         # Test microseconds
@@ -345,12 +369,18 @@ def test_fraction(self):
 
     def test_weekday(self):
         # Test weekday directives
-        for directive in ('A', 'a', 'w', 'u'):
-            self.helper(directive,6)
+        self.roundtrip('%w', 6)
+        self.roundtrip('%u', 6)
+
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP', '')
+    def test_weekday_locale(self):
+        # Test weekday directives
+        self.roundtrip('%A', 6)
+        self.roundtrip('%a', 6)
 
     def test_julian(self):
         # Test julian directives
-        self.helper('j', 7)
+        self.roundtrip('%j', 7)
 
     def test_offset(self):
         one_hour = 60 * 60
@@ -447,20 +477,121 @@ def test_bad_timezone(self):
                     "time.daylight set to %s and passing in %s" %
                     (time.tzname, tz_value, time.daylight, tz_name))
 
-    def test_date_time(self):
+    # NB: Does not roundtrip in some locales due to the ambiguity of
+    # the date and time representation (bugs in locales?):
+    # * Seconds are not included: bem_ZM, bokmal, ff_SN, nb_NO, nn_NO,
+    #   no_NO, norwegian, nynorsk.
+    # * Hours are in 12-hour notation without AM/PM indication: hy_AM,
+    #   id_ID, ms_MY.
+    # * Year is not included: ha_NG.
+    # * Use non-Gregorian calendar: lo_LA, thai, th_TH.
+    #   On Windows: ar_IN, ar_SA, fa_IR, ps_AF.
+    #
+    # BUG: Generates regexp that does not match the current date and time
+    # for lzh_TW.
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP',
+                      'he_IL', 'eu_ES', 'ar_AE', 'mfe_MU', 'yo_NG',
+                      'csb_PL', 'br_FR', 'gez_ET', 'brx_IN',
+                      'my_MM', 'or_IN', 'shn_MM', 'az_IR')
+    def test_date_time_locale(self):
         # Test %c directive
-        for position in range(6):
-            self.helper('c', position)
-
-    def test_date(self):
+        loc = locale.getlocale(locale.LC_TIME)[0]
+        if glibc_ver and glibc_ver < (2, 31) and loc == 'br_FR':
+            self.skipTest('%c in locale br_FR does not include time')
+        now = time.time()
+        self.roundtrip('%c', slice(0, 6), time.localtime(now))
+        # 1 hour 20 minutes 30 seconds ago
+        self.roundtrip('%c', slice(0, 6), time.localtime(now - 4830))
+        # 12 hours ago
+        self.roundtrip('%c', slice(0, 6), time.localtime(now - 12*3600))
+        # different days of the week
+        for i in range(1, 7):
+            self.roundtrip('%c', slice(0, 6), time.localtime(now - i*24*3600))
+        # different months
+        for i in range(1, 12):
+            self.roundtrip('%c', slice(0, 6), time.localtime(now - i*30*24*3600))
+        # different year
+        self.roundtrip('%c', slice(0, 6), time.localtime(now - 366*24*3600))
+
+    # NB: Dates before 1969 do not roundtrip on some locales:
+    # az_IR, bo_CN, bo_IN, dz_BT, eu_ES, eu_FR, fa_IR, or_IN.
+    @support.run_with_tz('STD-1DST,M4.1.0,M10.1.0')
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP',
+                      'he_IL', 'ar_AE', 'mfe_MU', 'yo_NG',
+                      'csb_PL', 'br_FR', 'gez_ET', 'brx_IN',
+                      'my_MM', 'shn_MM')
+    def test_date_time_locale2(self):
+        # Test %c directive
+        loc = locale.getlocale(locale.LC_TIME)[0]
+        if sys.platform.startswith('sunos'):
+            if loc in ('ar_AE',):
+                self.skipTest(f'locale {loc!r} may not work on this platform')
+        self.roundtrip('%c', slice(0, 6), (1900, 1, 1, 0, 0, 0, 0, 1, 0))
+        self.roundtrip('%c', slice(0, 6), (1800, 1, 1, 0, 0, 0, 0, 1, 0))
+
+    # NB: Does not roundtrip because use non-Gregorian calendar:
+    # lo_LA, thai, th_TH. On Windows: ar_IN, ar_SA, fa_IR, ps_AF.
+    # BUG: Generates regexp that does not match the current date
+    # for lzh_TW.
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP',
+                      'he_IL', 'eu_ES', 'ar_AE',
+                      'az_IR', 'my_MM', 'or_IN', 'shn_MM')
+    def test_date_locale(self):
         # Test %x directive
-        for position in range(0,3):
-            self.helper('x', position)
-
-    def test_time(self):
+        now = time.time()
+        self.roundtrip('%x', slice(0, 3), time.localtime(now))
+        # different days of the week
+        for i in range(1, 7):
+            self.roundtrip('%x', slice(0, 3), time.localtime(now - i*24*3600))
+        # different months
+        for i in range(1, 12):
+            self.roundtrip('%x', slice(0, 3), time.localtime(now - i*30*24*3600))
+        # different year
+        self.roundtrip('%x', slice(0, 3), time.localtime(now - 366*24*3600))
+
+    # NB: Dates before 1969 do not roundtrip on many locales, including C.
+    @unittest.skipIf(
+        support.is_emscripten or support.is_wasi,
+        "musl libc issue on Emscripten, bpo-46390"
+    )
+    @run_with_locales('LC_TIME', 'en_US', 'fr_FR', 'de_DE', 'ja_JP',
+                      'eu_ES', 'ar_AE', 'my_MM', 'shn_MM')
+    def test_date_locale2(self):
+        # Test %x directive
+        loc = locale.getlocale(locale.LC_TIME)[0]
+        if sys.platform.startswith('sunos'):
+            if loc in ('en_US', 'de_DE', 'ar_AE'):
+                self.skipTest(f'locale {loc!r} may not work on this platform')
+        self.roundtrip('%x', slice(0, 3), (1900, 1, 1, 0, 0, 0, 0, 1, 0))
+        self.roundtrip('%x', slice(0, 3), (1800, 1, 1, 0, 0, 0, 0, 1, 0))
+
+    # NB: Does not roundtrip in some locales due to the ambiguity of
+    # the time representation (bugs in locales?):
+    # * Seconds are not included: bokmal, ff_SN, nb_NO, nn_NO, no_NO,
+    #   norwegian, nynorsk.
+    # * Hours are in 12-hour notation without AM/PM indication: hy_AM,
+    #   ms_MY, sm_WS.
+    # BUG: Generates regexp that does not match the current time for lzh_TW.
+    @run_with_locales('LC_TIME', 'C', 'en_US', 'fr_FR', 'de_DE', 'ja_JP',
+                      'aa_ET', 'am_ET', 'az_IR', 'byn_ER', 'fa_IR', 'gez_ET',
+                      'my_MM', 'om_ET', 'or_IN', 'shn_MM', 'sid_ET', 'so_SO',
+                      'ti_ET', 'tig_ER', 'wal_ET')
+    def test_time_locale(self):
         # Test %X directive
-        for position in range(3,6):
-            self.helper('X', position)
+        loc = locale.getlocale(locale.LC_TIME)[0]
+        pos = slice(3, 6)
+        if glibc_ver and glibc_ver < (2, 29) and loc in {
+                'aa_ET', 'am_ET', 'byn_ER', 'gez_ET', 'om_ET',
+                'sid_ET', 'so_SO', 'ti_ET', 'tig_ER', 'wal_ET'}:
+            # Hours are in 12-hour notation without AM/PM indication.
+            # Ignore hours.
+            pos = slice(4, 6)
+        now = time.time()
+        self.roundtrip('%X', pos, time.localtime(now))
+        # 1 hour 20 minutes 30 seconds ago
+        self.roundtrip('%X', pos, time.localtime(now - 4830))
+        # 12 hours ago
+        self.roundtrip('%X', pos, time.localtime(now - 12*3600))
 
     def test_percent(self):
         # Make sure % signs are handled properly
@@ -497,9 +628,11 @@ def test_escaping(self):
         need_escaping = r".^$*+?{}\[]|)("
         self.assertTrue(_strptime._strptime_time(need_escaping, need_escaping))
 
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)  # gh-70647
     def test_feb29_on_leap_year_without_year(self):
         time.strptime("Feb 29", "%b %d")
 
+    @warnings_helper.ignore_warnings(category=DeprecationWarning)  # gh-70647
     def test_mar1_comes_after_feb29_even_when_omitting_the_year(self):
         self.assertLess(
                 time.strptime("Feb 29", "%b %d"),
@@ -679,25 +812,25 @@ class CacheTests(unittest.TestCase):
     def test_time_re_recreation(self):
         # Make sure cache is recreated when current locale does not match what
         # cached object was created with.
-        _strptime._strptime_time("10", "%d")
+        _strptime._strptime_time("10 2004", "%d %Y")
         _strptime._strptime_time("2005", "%Y")
         _strptime._TimeRE_cache.locale_time.lang = "Ni"
         original_time_re = _strptime._TimeRE_cache
-        _strptime._strptime_time("10", "%d")
+        _strptime._strptime_time("10 2004", "%d %Y")
         self.assertIsNot(original_time_re, _strptime._TimeRE_cache)
         self.assertEqual(len(_strptime._regex_cache), 1)
 
     def test_regex_cleanup(self):
         # Make sure cached regexes are discarded when cache becomes "full".
         try:
-            del _strptime._regex_cache['%d']
+            del _strptime._regex_cache['%d %Y']
         except KeyError:
             pass
         bogus_key = 0
         while len(_strptime._regex_cache) <= _strptime._CACHE_MAX_SIZE:
             _strptime._regex_cache[bogus_key] = None
             bogus_key += 1
-        _strptime._strptime_time("10", "%d")
+        _strptime._strptime_time("10 2004", "%d %Y")
         self.assertEqual(len(_strptime._regex_cache), 1)
 
     def test_new_localetime(self):
@@ -705,24 +838,19 @@ def test_new_localetime(self):
         # is created.
         locale_time_id = _strptime._TimeRE_cache.locale_time
         _strptime._TimeRE_cache.locale_time.lang = "Ni"
-        _strptime._strptime_time("10", "%d")
+        _strptime._strptime_time("10 2004", "%d %Y")
         self.assertIsNot(locale_time_id, _strptime._TimeRE_cache.locale_time)
 
     def test_TimeRE_recreation_locale(self):
         # The TimeRE instance should be recreated upon changing the locale.
-        locale_info = locale.getlocale(locale.LC_TIME)
-        try:
-            locale.setlocale(locale.LC_TIME, ('en_US', 'UTF8'))
-        except locale.Error:
-            self.skipTest('test needs en_US.UTF8 locale')
-        try:
-            _strptime._strptime_time('10', '%d')
+        with support.run_with_locale('LC_TIME', 'en_US.UTF8'):
+            _strptime._strptime_time('10 2004', '%d %Y')
             # Get id of current cache object.
             first_time_re = _strptime._TimeRE_cache
             try:
                 # Change the locale and force a recreation of the cache.
                 locale.setlocale(locale.LC_TIME, ('de_DE', 'UTF8'))
-                _strptime._strptime_time('10', '%d')
+                _strptime._strptime_time('10 2004', '%d %Y')
                 # Get the new cache object's id.
                 second_time_re = _strptime._TimeRE_cache
                 # They should not be equal.
@@ -732,10 +860,6 @@ def test_TimeRE_recreation_locale(self):
             # to the resetting to the original locale.
             except locale.Error:
                 self.skipTest('test needs de_DE.UTF8 locale')
-        # Make sure we don't trample on the locale setting once we leave the
-        # test.
-        finally:
-            locale.setlocale(locale.LC_TIME, locale_info)
 
     @support.run_with_tz('STD-1DST,M4.1.0,M10.1.0')
     def test_TimeRE_recreation_timezone(self):
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
index 15f6ee06ffe19b..e3ddaa090316ff 100644
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -9,7 +9,7 @@
 import weakref
 
 from test import support
-from test.support import import_helper
+from test.support import import_helper, suppress_immortalization
 from test.support.script_helper import assert_python_ok
 
 ISBIGENDIAN = sys.byteorder == "big"
@@ -96,6 +96,13 @@ def test_new_features(self):
             ('10s', b'helloworld', b'helloworld', b'helloworld', 0),
             ('11s', b'helloworld', b'helloworld\0', b'helloworld\0', 1),
             ('20s', b'helloworld', b'helloworld'+10*b'\0', b'helloworld'+10*b'\0', 1),
+            ('0p', b'helloworld', b'', b'', 1),
+            ('1p', b'helloworld', b'\x00', b'\x00', 1),
+            ('2p', b'helloworld', b'\x01h', b'\x01h', 1),
+            ('10p', b'helloworld', b'\x09helloworl', b'\x09helloworl', 1),
+            ('11p', b'helloworld', b'\x0Ahelloworld', b'\x0Ahelloworld', 0),
+            ('12p', b'helloworld', b'\x0Ahelloworld\0', b'\x0Ahelloworld\0', 1),
+            ('20p', b'helloworld', b'\x0Ahelloworld'+9*b'\0', b'\x0Ahelloworld'+9*b'\0', 1),
             ('b', 7, b'\7', b'\7', 0),
             ('b', -7, b'\371', b'\371', 0),
             ('B', 7, b'\7', b'\7', 0),
@@ -339,6 +346,7 @@ def assertStructError(func, *args, **kwargs):
     def test_p_code(self):
         # Test p ("Pascal string") code.
         for code, input, expected, expectedback in [
+                ('0p', b'abc', b'',                b''),
                 ('p',  b'abc', b'\x00',            b''),
                 ('1p', b'abc', b'\x00',            b''),
                 ('2p', b'abc', b'\x01a',           b'a'),
@@ -521,6 +529,9 @@ def __bool__(self):
 
         for c in [b'\x01', b'\x7f', b'\xff', b'\x0f', b'\xf0']:
             self.assertTrue(struct.unpack('>?', c)[0])
+            self.assertTrue(struct.unpack('<?', c)[0])
+            self.assertTrue(struct.unpack('=?', c)[0])
+            self.assertTrue(struct.unpack('@?', c)[0])
 
     def test_count_overflow(self):
         hugecount = '{}b'.format(sys.maxsize+1)
@@ -580,6 +591,7 @@ def test__sizeof__(self):
         self.check_sizeof('187s', 1)
         self.check_sizeof('20p', 1)
         self.check_sizeof('0s', 1)
+        self.check_sizeof('0p', 1)
         self.check_sizeof('0c', 0)
 
     def test_boundary_error_message(self):
@@ -674,6 +686,7 @@ def __del__(self):
         self.assertIn(b"Exception ignored in:", stderr)
         self.assertIn(b"C.__del__", stderr)
 
+    @suppress_immortalization()
     def test__struct_reference_cycle_cleaned_up(self):
         # Regression test for python/cpython#94207.
 
diff --git a/Lib/test/test_structseq.py b/Lib/test/test_structseq.py
index 6aec63e2603412..d0bc0bd7b61520 100644
--- a/Lib/test/test_structseq.py
+++ b/Lib/test/test_structseq.py
@@ -2,8 +2,10 @@
 import os
 import pickle
 import re
+import textwrap
 import time
 import unittest
+from test.support import script_helper
 
 
 class StructSeqTest(unittest.TestCase):
@@ -342,6 +344,17 @@ def test_copy_replace_with_unnamed_fields(self):
         with self.assertRaisesRegex(TypeError, error_message):
             copy.replace(r, st_mode=1, error=2)
 
+    def test_reference_cycle(self):
+        # gh-122527: Check that a structseq that's part of a reference cycle
+        # with its own type doesn't crash. Previously, if the type's dictionary
+        # was cleared first, the structseq instance would crash in the
+        # destructor.
+        script_helper.assert_python_ok("-c", textwrap.dedent(r"""
+            import time
+            t = time.gmtime()
+            type(t).refcyle = t
+        """))
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 9ecd8426cb5537..9412a2d737bb2e 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -25,7 +25,6 @@
 import gc
 import textwrap
 import json
-import pathlib
 from test.support.os_helper import FakePath
 
 try:
@@ -1408,7 +1407,7 @@ def open_fds():
         t = threading.Thread(target=open_fds)
         t.start()
         try:
-            with self.assertRaises(EnvironmentError):
+            with self.assertRaises(OSError):
                 subprocess.Popen(NONEXISTING_CMD,
                                  stdin=subprocess.PIPE,
                                  stdout=subprocess.PIPE,
@@ -1522,9 +1521,6 @@ def test_communicate_epipe(self):
         p.communicate(b"x" * 2**20)
 
     def test_repr(self):
-        path_cmd = pathlib.Path("my-tool.py")
-        pathlib_cls = path_cmd.__class__.__name__
-
         cases = [
             ("ls", True, 123, "<Popen: returncode: 123 args: 'ls'>"),
             ('a' * 100, True, 0,
@@ -1532,7 +1528,8 @@ def test_repr(self):
             (["ls"], False, None, "<Popen: returncode: None args: ['ls']>"),
             (["ls", '--my-opts', 'a' * 100], False, None,
              "<Popen: returncode: None args: ['ls', '--my-opts', 'aaaaaaaaaaaaaaaaaaaaaaaa...>"),
-            (path_cmd, False, 7, f"<Popen: returncode: 7 args: {pathlib_cls}('my-tool.py')>")
+            (os_helper.FakePath("my-tool.py"), False, 7,
+             "<Popen: returncode: 7 args: <FakePath 'my-tool.py'>>")
         ]
         with unittest.mock.patch.object(subprocess.Popen, '_execute_child'):
             for cmd, shell, code, sx in cases:
diff --git a/Lib/test/test_super.py b/Lib/test/test_super.py
index 256b416caaa584..1222ec6a3c4109 100644
--- a/Lib/test/test_super.py
+++ b/Lib/test/test_super.py
@@ -1,9 +1,10 @@
 """Unit tests for zero-argument super() & related machinery."""
 
 import textwrap
+import threading
 import unittest
 from unittest.mock import patch
-from test.support import import_helper
+from test.support import import_helper, threading_helper
 
 
 ADAPTIVE_WARMUP_DELAY = 2
@@ -505,6 +506,39 @@ def some(cls):
         for _ in range(ADAPTIVE_WARMUP_DELAY):
             C.some(C)
 
+    @threading_helper.requires_working_threading()
+    def test___class___modification_multithreaded(self):
+        """ Note: this test isn't actually testing anything on its own.
+        It requires a sys audithook to be set to crash on older Python.
+        This should be the case anyways as our test suite sets
+        an audit hook.
+        """
+
+        class Foo:
+            pass
+
+        class Bar:
+            pass
+
+        thing = Foo()
+        def work():
+            foo = thing
+            for _ in range(200):
+                foo.__class__ = Bar
+                type(foo)
+                foo.__class__ = Foo
+                type(foo)
+
+
+        threads = []
+        for _ in range(6):
+            thread = threading.Thread(target=work)
+            thread.start()
+            threads.append(thread)
+
+        for thread in threads:
+            thread.join()
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index d160cbf0645b47..4310f06924a89d 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -547,13 +547,14 @@ def test_optim_args_from_interpreter_flags(self):
             with self.subTest(opts=opts):
                 self.check_options(opts, 'optim_args_from_interpreter_flags')
 
+    @unittest.skipIf(support.is_apple_mobile, "Unstable on Apple Mobile")
     @unittest.skipIf(support.is_emscripten, "Unstable in Emscripten")
     @unittest.skipIf(support.is_wasi, "Unavailable on WASI")
     def test_fd_count(self):
-        # We cannot test the absolute value of fd_count(): on old Linux
-        # kernel or glibc versions, os.urandom() keeps a FD open on
-        # /dev/urandom device and Python has 4 FD opens instead of 3.
-        # Test is unstable on Emscripten. The platform starts and stops
+        # We cannot test the absolute value of fd_count(): on old Linux kernel
+        # or glibc versions, os.urandom() keeps a FD open on /dev/urandom
+        # device and Python has 4 FD opens instead of 3. Test is unstable on
+        # Emscripten and Apple Mobile platforms; these platforms start and stop
         # background threads that use pipes and epoll fds.
         start = os_helper.fd_count()
         fd = os.open(__file__, os.O_RDONLY)
diff --git a/Lib/test/test_symtable.py b/Lib/test/test_symtable.py
index 92b78a8086a83d..c1b7030d2d250c 100644
--- a/Lib/test/test_symtable.py
+++ b/Lib/test/test_symtable.py
@@ -1,6 +1,8 @@
 """
 Test the API of the symtable module.
 """
+
+import textwrap
 import symtable
 import unittest
 
@@ -13,7 +15,7 @@
 
 glob = 42
 some_var = 12
-some_non_assigned_global_var = 11
+some_non_assigned_global_var: int
 some_assigned_global_var = 11
 
 class Mine:
@@ -49,10 +51,124 @@ def namespace_test(): pass
 def generic_spam[T](a):
     pass
 
-class GenericMine[T: int]:
+class GenericMine[T: int, U: (int, str) = int]:
     pass
 """
 
+TEST_COMPLEX_CLASS_CODE = """
+# The following symbols are defined in ComplexClass
+# without being introduced by a 'global' statement.
+glob_unassigned_meth: Any
+glob_unassigned_meth_pep_695: Any
+
+glob_unassigned_async_meth: Any
+glob_unassigned_async_meth_pep_695: Any
+
+def glob_assigned_meth(): pass
+def glob_assigned_meth_pep_695[T](): pass
+
+async def glob_assigned_async_meth(): pass
+async def glob_assigned_async_meth_pep_695[T](): pass
+
+# The following symbols are defined in ComplexClass after
+# being introduced by a 'global' statement (and therefore
+# are not considered as local symbols of ComplexClass).
+glob_unassigned_meth_ignore: Any
+glob_unassigned_meth_pep_695_ignore: Any
+
+glob_unassigned_async_meth_ignore: Any
+glob_unassigned_async_meth_pep_695_ignore: Any
+
+def glob_assigned_meth_ignore(): pass
+def glob_assigned_meth_pep_695_ignore[T](): pass
+
+async def glob_assigned_async_meth_ignore(): pass
+async def glob_assigned_async_meth_pep_695_ignore[T](): pass
+
+class ComplexClass:
+    a_var = 1234
+    a_genexpr = (x for x in [])
+    a_lambda = lambda x: x
+
+    type a_type_alias = int
+    type a_type_alias_pep_695[T] = list[T]
+
+    class a_class: pass
+    class a_class_pep_695[T]: pass
+
+    def a_method(self): pass
+    def a_method_pep_695[T](self): pass
+
+    async def an_async_method(self): pass
+    async def an_async_method_pep_695[T](self): pass
+
+    @classmethod
+    def a_classmethod(cls): pass
+    @classmethod
+    def a_classmethod_pep_695[T](self): pass
+
+    @classmethod
+    async def an_async_classmethod(cls): pass
+    @classmethod
+    async def an_async_classmethod_pep_695[T](self): pass
+
+    @staticmethod
+    def a_staticmethod(): pass
+    @staticmethod
+    def a_staticmethod_pep_695[T](self): pass
+
+    @staticmethod
+    async def an_async_staticmethod(): pass
+    @staticmethod
+    async def an_async_staticmethod_pep_695[T](self): pass
+
+    # These ones will be considered as methods because of the 'def' although
+    # they are *not* valid methods at runtime since they are not decorated
+    # with @staticmethod.
+    def a_fakemethod(): pass
+    def a_fakemethod_pep_695[T](): pass
+
+    async def an_async_fakemethod(): pass
+    async def an_async_fakemethod_pep_695[T](): pass
+
+    # Check that those are still considered as methods
+    # since they are not using the 'global' keyword.
+    def glob_unassigned_meth(): pass
+    def glob_unassigned_meth_pep_695[T](): pass
+
+    async def glob_unassigned_async_meth(): pass
+    async def glob_unassigned_async_meth_pep_695[T](): pass
+
+    def glob_assigned_meth(): pass
+    def glob_assigned_meth_pep_695[T](): pass
+
+    async def glob_assigned_async_meth(): pass
+    async def glob_assigned_async_meth_pep_695[T](): pass
+
+    # The following are not picked as local symbols because they are not
+    # visible by the class at runtime (this is equivalent to having the
+    # definitions outside of the class).
+    global glob_unassigned_meth_ignore
+    def glob_unassigned_meth_ignore(): pass
+    global glob_unassigned_meth_pep_695_ignore
+    def glob_unassigned_meth_pep_695_ignore[T](): pass
+
+    global glob_unassigned_async_meth_ignore
+    async def glob_unassigned_async_meth_ignore(): pass
+    global glob_unassigned_async_meth_pep_695_ignore
+    async def glob_unassigned_async_meth_pep_695_ignore[T](): pass
+
+    global glob_assigned_meth_ignore
+    def glob_assigned_meth_ignore(): pass
+    global glob_assigned_meth_pep_695_ignore
+    def glob_assigned_meth_pep_695_ignore[T](): pass
+
+    global glob_assigned_async_meth_ignore
+    async def glob_assigned_async_meth_ignore(): pass
+    global glob_assigned_async_meth_pep_695_ignore
+    async def glob_assigned_async_meth_pep_695_ignore[T](): pass
+"""
+
 
 def find_block(block, name):
     for ch in block.get_children():
@@ -65,6 +181,7 @@ class SymtableTest(unittest.TestCase):
     top = symtable.symtable(TEST_CODE, "?", "exec")
     # These correspond to scopes in TEST_CODE
     Mine = find_block(top, "Mine")
+
     a_method = find_block(Mine, "a_method")
     spam = find_block(top, "spam")
     internal = find_block(spam, "internal")
@@ -78,6 +195,7 @@ class SymtableTest(unittest.TestCase):
     GenericMine = find_block(top, "GenericMine")
     GenericMine_inner = find_block(GenericMine, "GenericMine")
     T = find_block(GenericMine, "T")
+    U = find_block(GenericMine, "U")
 
     def test_type(self):
         self.assertEqual(self.top.get_type(), "module")
@@ -87,13 +205,14 @@ def test_type(self):
         self.assertEqual(self.internal.get_type(), "function")
         self.assertEqual(self.foo.get_type(), "function")
         self.assertEqual(self.Alias.get_type(), "type alias")
-        self.assertEqual(self.GenericAlias.get_type(), "type parameter")
+        self.assertEqual(self.GenericAlias.get_type(), "type parameters")
         self.assertEqual(self.GenericAlias_inner.get_type(), "type alias")
-        self.assertEqual(self.generic_spam.get_type(), "type parameter")
+        self.assertEqual(self.generic_spam.get_type(), "type parameters")
         self.assertEqual(self.generic_spam_inner.get_type(), "function")
-        self.assertEqual(self.GenericMine.get_type(), "type parameter")
+        self.assertEqual(self.GenericMine.get_type(), "type parameters")
         self.assertEqual(self.GenericMine_inner.get_type(), "class")
-        self.assertEqual(self.T.get_type(), "TypeVar bound")
+        self.assertEqual(self.T.get_type(), "type variable")
+        self.assertEqual(self.U.get_type(), "type variable")
 
     def test_id(self):
         self.assertGreater(self.top.get_id(), 0)
@@ -237,9 +356,79 @@ def test_name(self):
         self.assertEqual(self.spam.lookup("x").get_name(), "x")
         self.assertEqual(self.Mine.get_name(), "Mine")
 
-    def test_class_info(self):
+    def test_class_get_methods(self):
         self.assertEqual(self.Mine.get_methods(), ('a_method',))
 
+        top = symtable.symtable(TEST_COMPLEX_CLASS_CODE, "?", "exec")
+        this = find_block(top, "ComplexClass")
+
+        self.assertEqual(this.get_methods(), (
+            'a_method', 'a_method_pep_695',
+            'an_async_method', 'an_async_method_pep_695',
+            'a_classmethod', 'a_classmethod_pep_695',
+            'an_async_classmethod', 'an_async_classmethod_pep_695',
+            'a_staticmethod', 'a_staticmethod_pep_695',
+            'an_async_staticmethod', 'an_async_staticmethod_pep_695',
+            'a_fakemethod', 'a_fakemethod_pep_695',
+            'an_async_fakemethod', 'an_async_fakemethod_pep_695',
+            'glob_unassigned_meth', 'glob_unassigned_meth_pep_695',
+            'glob_unassigned_async_meth', 'glob_unassigned_async_meth_pep_695',
+            'glob_assigned_meth', 'glob_assigned_meth_pep_695',
+            'glob_assigned_async_meth', 'glob_assigned_async_meth_pep_695',
+        ))
+
+        # Test generator expressions that are of type TYPE_FUNCTION
+        # but will not be reported by get_methods() since they are
+        # not functions per se.
+        #
+        # Other kind of comprehensions such as list, set or dict
+        # expressions do not have the TYPE_FUNCTION type.
+
+        def check_body(body, expected_methods):
+            indented = textwrap.indent(body, ' ' * 4)
+            top = symtable.symtable(f"class A:\n{indented}", "?", "exec")
+            this = find_block(top, "A")
+            self.assertEqual(this.get_methods(), expected_methods)
+
+        # statements with 'genexpr' inside it
+        GENEXPRS = (
+            'x = (x for x in [])',
+            'x = (x async for x in [])',
+            'type x[genexpr = (x for x in [])] = (x for x in [])',
+            'type x[genexpr = (x async for x in [])] = (x async for x in [])',
+            'genexpr = (x for x in [])',
+            'genexpr = (x async for x in [])',
+            'type genexpr[genexpr = (x for x in [])] = (x for x in [])',
+            'type genexpr[genexpr = (x async for x in [])] = (x async for x in [])',
+        )
+
+        for gen in GENEXPRS:
+            # test generator expression
+            with self.subTest(gen=gen):
+                check_body(gen, ())
+
+            # test generator expression + variable named 'genexpr'
+            with self.subTest(gen=gen, isvar=True):
+                check_body('\n'.join((gen, 'genexpr = 1')), ())
+                check_body('\n'.join(('genexpr = 1', gen)), ())
+
+        for paramlist in ('()', '(x)', '(x, y)', '(z: T)'):
+            for func in (
+                f'def genexpr{paramlist}:pass',
+                f'async def genexpr{paramlist}:pass',
+                f'def genexpr[T]{paramlist}:pass',
+                f'async def genexpr[T]{paramlist}:pass',
+            ):
+                with self.subTest(func=func):
+                    # test function named 'genexpr'
+                    check_body(func, ('genexpr',))
+
+                for gen in GENEXPRS:
+                    with self.subTest(gen=gen, func=func):
+                        # test generator expression + function named 'genexpr'
+                        check_body('\n'.join((gen, func)), ('genexpr',))
+                        check_body('\n'.join((func, gen)), ('genexpr',))
+
     def test_filename_correct(self):
         ### Bug tickler: SyntaxError file name correct whether error raised
         ### while parsing or building symbol table.
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index b978838ea7003f..cdeb26adf34d89 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -1853,28 +1853,6 @@
     Traceback (most recent call last):
     SyntaxError: positional patterns follow keyword patterns
 
-Non-matching 'elif'/'else' statements:
-
-    >>> if a == b:
-    ...     ...
-    ...     elif a == c:
-    Traceback (most recent call last):
-    SyntaxError: 'elif' must match an if-statement here
-
-    >>> if x == y:
-    ...     ...
-    ...     else:
-    Traceback (most recent call last):
-    SyntaxError: 'else' must match a valid statement here
-
-    >>> elif m == n:
-    Traceback (most recent call last):
-    SyntaxError: 'elif' must match an if-statement here
-
-    >>> else:
-    Traceback (most recent call last):
-    SyntaxError: 'else' must match a valid statement here
-
 Uses of the star operator which should fail:
 
 A[:*b]
@@ -2068,16 +2046,91 @@ def f(x: *b)
    ...
    SyntaxError: Type parameter list cannot be empty
 
+   >>> def f[T: (x:=3)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar bound
+
+   >>> def f[T: ((x:= 3), int)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar constraint
+
+   >>> def f[T = ((x:=3))](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar default
+
+   >>> async def f[T: (x:=3)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar bound
+
+   >>> async def f[T: ((x:= 3), int)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar constraint
+
+   >>> async def f[T = ((x:=3))](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar default
+
    >>> type A[T: (x:=3)] = int
    Traceback (most recent call last):
       ...
    SyntaxError: named expression cannot be used within a TypeVar bound
 
+   >>> type A[T: ((x:= 3), int)] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar constraint
+
+   >>> type A[T = ((x:=3))] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: named expression cannot be used within a TypeVar default
+
+   >>> def f[T: (yield)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar bound
+
+   >>> def f[T: (int, (yield))](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar constraint
+
+   >>> def f[T = (yield)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar default
+
+   >>> def f[*Ts = (yield)](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVarTuple default
+
+   >>> def f[**P = [(yield), int]](): pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a ParamSpec default
+
    >>> type A[T: (yield 3)] = int
    Traceback (most recent call last):
       ...
    SyntaxError: yield expression cannot be used within a TypeVar bound
 
+   >>> type A[T: (int, (yield 3))] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar constraint
+
+   >>> type A[T = (yield 3)] = int
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar default
+
    >>> type A[T: (await 3)] = int
    Traceback (most recent call last):
       ...
@@ -2088,6 +2141,31 @@ def f(x: *b)
       ...
    SyntaxError: yield expression cannot be used within a TypeVar bound
 
+   >>> class A[T: (yield 3)]: pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar bound
+
+   >>> class A[T: (int, (yield 3))]: pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar constraint
+
+   >>> class A[T = (yield)]: pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVar default
+
+   >>> class A[*Ts = (yield)]: pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a TypeVarTuple default
+
+   >>> class A[**P = [(yield), int]]: pass
+   Traceback (most recent call last):
+      ...
+   SyntaxError: yield expression cannot be used within a ParamSpec default
+
    >>> type A = (x := 3)
    Traceback (most recent call last):
       ...
@@ -2167,8 +2245,8 @@ def _check_error(self, code, errtext,
                      lineno=None, offset=None, end_lineno=None, end_offset=None):
         """Check that compiling code raises SyntaxError with errtext.
 
-        errtext is a regular expression that must be present in the
-        test of the exception raised. If subclass is specified, it
+        errtest is a regular expression that must be present in the
+        test of the exception raised.  If subclass is specified it
         is the expected subclass of SyntaxError (e.g. IndentationError).
         """
         try:
@@ -2192,22 +2270,6 @@ def _check_error(self, code, errtext,
         else:
             self.fail("compile() did not raise SyntaxError")
 
-    def _check_noerror(self, code,
-                       errtext="compile() raised unexpected SyntaxError",
-                       filename="<testcase>", mode="exec", subclass=None):
-        """Check that compiling code does not raise a SyntaxError.
-
-        errtext is the message passed to self.fail if there is
-        a SyntaxError. If the subclass parameter is specified,
-        it is the subclass of SyntaxError (e.g. IndentationError)
-        that the raised error is checked against.
-        """
-        try:
-            compile(code, filename, mode)
-        except SyntaxError as err:
-            if (not subclass) or isinstance(err, subclass):
-                self.fail(errtext)
-
     def test_expression_with_assignment(self):
         self._check_error(
             "print(end1 + end2 = ' ')",
@@ -2609,25 +2671,6 @@ def test_syntax_error_on_deeply_nested_blocks(self):
 """
         self._check_error(source, "too many statically nested blocks")
 
-    def test_syntax_error_non_matching_elif_else_statements(self):
-        # Check bpo-45759: 'elif' statements that doesn't match an
-        # if-statement or 'else' statements that doesn't match any
-        # valid else-able statement (e.g. 'while')
-        self._check_error(
-            "elif m == n:\n    ...",
-            "'elif' must match an if-statement here")
-        self._check_error(
-            "else:\n    ...",
-            "'else' must match a valid statement here")
-        self._check_noerror("if a == b:\n    ...\nelif a == c:\n    ...")
-        self._check_noerror("if x == y:\n    ...\nelse:\n    ...")
-        self._check_error(
-            "else = 123",
-            "invalid syntax")
-        self._check_error(
-            "elif 55 = 123",
-            "cannot assign to literal here")
-
     @support.cpython_only
     def test_error_on_parser_stack_overflow(self):
         source = "-" * 100000 + "4"
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index ee3bd0092f9bf3..01ce0118651b75 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -206,6 +206,20 @@ def test_exit(self):
         self.assertEqual(out, b'')
         self.assertEqual(err, b'')
 
+        # gh-125842: Windows uses 32-bit unsigned integers for exit codes
+        # so a -1 exit code is sometimes interpreted as 0xffff_ffff.
+        rc, out, err = assert_python_failure('-c', 'import sys; sys.exit(0xffff_ffff)')
+        self.assertIn(rc, (-1, 0xff, 0xffff_ffff))
+        self.assertEqual(out, b'')
+        self.assertEqual(err, b'')
+
+        # Overflow results in a -1 exit code, which may be converted to 0xff
+        # or 0xffff_ffff.
+        rc, out, err = assert_python_failure('-c', 'import sys; sys.exit(2**128)')
+        self.assertIn(rc, (-1, 0xff, 0xffff_ffff))
+        self.assertEqual(out, b'')
+        self.assertEqual(err, b'')
+
         # call with integer argument
         with self.assertRaises(SystemExit) as cm:
             sys.exit(42)
@@ -348,6 +362,36 @@ def test_setrecursionlimit_to_depth(self):
         finally:
             sys.setrecursionlimit(old_limit)
 
+    @unittest.skipUnless(support.Py_GIL_DISABLED, "only meaningful if the GIL is disabled")
+    @threading_helper.requires_working_threading()
+    def test_racing_recursion_limit(self):
+        from threading import Thread
+        def something_recursive():
+            def count(n):
+                if n > 0:
+                    return count(n - 1) + 1
+                return 0
+
+            count(50)
+
+        def set_recursion_limit():
+            for limit in range(100, 200):
+                sys.setrecursionlimit(limit)
+
+        threads = []
+        for _ in range(5):
+            threads.append(Thread(target=set_recursion_limit))
+
+        for _ in range(5):
+            threads.append(Thread(target=something_recursive))
+
+        with threading_helper.catch_threading_exception() as cm:
+            with threading_helper.start_threads(threads):
+                pass
+
+            if cm.exc_value:
+                raise cm.exc_value
+
     def test_getwindowsversion(self):
         # Raise SkipTest if sys doesn't have getwindowsversion attribute
         test.support.get_attribute(sys, "getwindowsversion")
@@ -394,10 +438,15 @@ def test_dlopenflags(self):
 
     @test.support.refcount_test
     def test_refcount(self):
-        # n here must be a global in order for this test to pass while
-        # tracing with a python function.  Tracing calls PyFrame_FastToLocals
-        # which will add a copy of any locals to the frame object, causing
-        # the reference count to increase by 2 instead of 1.
+        # n here originally had to be a global in order for this test to pass
+        # while tracing with a python function. Tracing used to call
+        # PyFrame_FastToLocals, which would add a copy of any locals to the
+        # frame object, causing the ref count to increase by 2 instead of 1.
+        # While that no longer happens (due to PEP 667), this test case retains
+        # its original global-based implementation
+        # PEP 683's immortal objects also made this point moot, since the
+        # refcount for None doesn't change anyway. Maybe this test should be
+        # using a different constant value? (e.g. an integer)
         global n
         self.assertRaises(TypeError, sys.getrefcount)
         c = sys.getrefcount(None)
@@ -726,8 +775,11 @@ def __hash__(self):
         if has_is_interned:
             self.assertIs(sys._is_interned(S("abc")), False)
 
+    @support.cpython_only
     @requires_subinterpreters
     def test_subinterp_intern_dynamically_allocated(self):
+        # Implementation detail: Dynamically allocated strings
+        # are distinct between interpreters
         s = "never interned before" + str(random.randrange(0, 10**9))
         t = sys.intern(s)
         self.assertIs(t, s)
@@ -735,24 +787,58 @@ def test_subinterp_intern_dynamically_allocated(self):
         interp = interpreters.create()
         interp.exec(textwrap.dedent(f'''
             import sys
-            t = sys.intern({s!r})
+
+            # set `s`, avoid parser interning & constant folding
+            s = str({s.encode()!r}, 'utf-8')
+
+            t = sys.intern(s)
+
             assert id(t) != {id(s)}, (id(t), {id(s)})
             assert id(t) != {id(t)}, (id(t), {id(t)})
             '''))
 
+    @support.cpython_only
     @requires_subinterpreters
     def test_subinterp_intern_statically_allocated(self):
+        # Implementation detail: Statically allocated strings are shared
+        # between interpreters.
         # See Tools/build/generate_global_objects.py for the list
         # of strings that are always statically allocated.
-        s = '__init__'
-        t = sys.intern(s)
+        for s in ('__init__', 'CANCELLED', '<module>', 'utf-8',
+                  '{{', '', '\n', '_', 'x', '\0', '\N{CEDILLA}', '\xff',
+                  ):
+            with self.subTest(s=s):
+                t = sys.intern(s)
 
-        interp = interpreters.create()
-        interp.exec(textwrap.dedent(f'''
-            import sys
-            t = sys.intern({s!r})
-            assert id(t) == {id(t)}, (id(t), {id(t)})
-            '''))
+                interp = interpreters.create()
+                interp.exec(textwrap.dedent(f'''
+                    import sys
+
+                    # set `s`, avoid parser interning & constant folding
+                    s = str({s.encode()!r}, 'utf-8')
+
+                    t = sys.intern(s)
+                    assert id(t) == {id(t)}, (id(t), {id(t)})
+                    '''))
+
+    @support.cpython_only
+    @requires_subinterpreters
+    def test_subinterp_intern_singleton(self):
+        # Implementation detail: singletons are used for 0- and 1-character
+        # latin1 strings.
+        for s in '', '\n', '_', 'x', '\0', '\N{CEDILLA}', '\xff':
+            with self.subTest(s=s):
+                interp = interpreters.create()
+                interp.exec(textwrap.dedent(f'''
+                    import sys
+
+                    # set `s`, avoid parser interning & constant folding
+                    s = str({s.encode()!r}, 'utf-8')
+
+                    assert id(s) == {id(s)}
+                    t = sys.intern(s)
+                    '''))
+                self.assertTrue(sys._is_interned(s))
 
     def test_sys_flags(self):
         self.assertTrue(sys.flags)
@@ -1561,7 +1647,7 @@ class C(object): pass
         def func():
             return sys._getframe()
         x = func()
-        check(x, size('3Pi2cP7P2ic??2P'))
+        check(x, size('3Pi2c2P7P2ic??2P'))
         # function
         def func(): pass
         check(func, size('15Pi'))
@@ -1780,7 +1866,8 @@ def test_pythontypes(self):
         # symtable entry
         # XXX
         # sys.flags
-        check(sys.flags, vsize('') + self.P * len(sys.flags))
+        # FIXME: The +1 will not be necessary once gh-122575 is fixed
+        check(sys.flags, vsize('') + self.P * (1 + len(sys.flags)))
 
     def test_asyncgen_hooks(self):
         old = sys.get_asyncgen_hooks()
diff --git a/Lib/test/test_sys_setprofile.py b/Lib/test/test_sys_setprofile.py
index 32e03d7cd25dbe..b2e8e8a15b67ea 100644
--- a/Lib/test/test_sys_setprofile.py
+++ b/Lib/test/test_sys_setprofile.py
@@ -479,6 +479,20 @@ def f():
         sys.setprofile(lambda *args: None)
         f()
 
+    def test_method_with_c_function(self):
+        # gh-122029
+        # When we have a PyMethodObject whose im_func is a C function, we
+        # should record both the call and the return. f = classmethod(repr)
+        # is just a way to create a PyMethodObject with a C function.
+        class A:
+            f = classmethod(repr)
+        events = []
+        sys.setprofile(lambda frame, event, args: events.append(event))
+        A().f()
+        sys.setprofile(None)
+        # The last c_call is the call to sys.setprofile
+        self.assertEqual(events, ['c_call', 'c_return', 'c_call'])
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_sys_settrace.py b/Lib/test/test_sys_settrace.py
index ded1d9224d82d9..c622fd9ce7c466 100644
--- a/Lib/test/test_sys_settrace.py
+++ b/Lib/test/test_sys_settrace.py
@@ -1650,15 +1650,15 @@ def func():
         EXPECTED_EVENTS = [
             (0, 'call'),
             (2, 'line'),
-            (1, 'line'),
             (-3, 'call'),
             (-2, 'line'),
             (-2, 'return'),
-            (4, 'line'),
             (1, 'line'),
+            (4, 'line'),
+            (2, 'line'),
             (-2, 'call'),
             (-2, 'return'),
-            (1, 'return'),
+            (2, 'return'),
         ]
 
         # C level events should be the same as expected and the same as Python level.
diff --git a/Lib/test/test_sysconfig.py b/Lib/test/test_sysconfig.py
index 9233304c6a5327..bf534130212482 100644
--- a/Lib/test/test_sysconfig.py
+++ b/Lib/test/test_sysconfig.py
@@ -5,6 +5,8 @@
 import os
 import subprocess
 import shutil
+import json
+import textwrap
 from copy import copy
 
 from test.support import (
@@ -17,6 +19,7 @@
 from test.support.import_helper import import_module
 from test.support.os_helper import (TESTFN, unlink, skip_unless_symlink,
                                     change_cwd)
+from test.support.venv import VirtualEnvironment
 
 import sysconfig
 from sysconfig import (get_paths, get_platform, get_config_vars,
@@ -101,6 +104,12 @@ def _cleanup_testfn(self):
         elif os.path.isdir(path):
             shutil.rmtree(path)
 
+    def venv(self, **venv_create_args):
+        return VirtualEnvironment.from_tmpdir(
+            prefix=f'{self.id()}-venv-',
+            **venv_create_args,
+        )
+
     def test_get_path_names(self):
         self.assertEqual(get_path_names(), sysconfig._SCHEME_KEYS)
 
@@ -157,7 +166,7 @@ def test_posix_venv_scheme(self):
         binpath = 'bin'
         incpath = 'include'
         libpath = os.path.join('lib',
-                               'python%d.%d' % sys.version_info[:2],
+                               f'python{sysconfig._get_python_version_abi()}',
                                'site-packages')
 
         # Resolve the paths in an imaginary venv/ directory
@@ -417,8 +426,8 @@ def test_user_similar(self):
                 if name == 'platlib':
                     # Replace "/lib64/python3.11/site-packages" suffix
                     # with "/lib/python3.11/site-packages".
-                    py_version_short = sysconfig.get_python_version()
-                    suffix = f'python{py_version_short}/site-packages'
+                    py_version_abi = sysconfig._get_python_version_abi()
+                    suffix = f'python{py_version_abi}/site-packages'
                     expected = expected.replace(f'/{sys.platlibdir}/{suffix}',
                                                 f'/lib/{suffix}')
                 self.assertEqual(user_path, expected)
@@ -582,6 +591,72 @@ def test_osx_ext_suffix(self):
         suffix = sysconfig.get_config_var('EXT_SUFFIX')
         self.assertTrue(suffix.endswith('-darwin.so'), suffix)
 
+    @requires_subprocess()
+    def test_config_vars_depend_on_site_initialization(self):
+        script = textwrap.dedent("""
+            import sysconfig
+
+            config_vars = sysconfig.get_config_vars()
+
+            import json
+            print(json.dumps(config_vars, indent=2))
+        """)
+
+        with self.venv() as venv:
+            site_config_vars = json.loads(venv.run('-c', script).stdout)
+            no_site_config_vars = json.loads(venv.run('-S', '-c', script).stdout)
+
+        self.assertNotEqual(site_config_vars, no_site_config_vars)
+        # With the site initialization, the virtual environment should be enabled.
+        self.assertEqual(site_config_vars['base'], venv.prefix)
+        self.assertEqual(site_config_vars['platbase'], venv.prefix)
+        #self.assertEqual(site_config_vars['prefix'], venv.prefix)  # # FIXME: prefix gets overwriten by _init_posix
+        # Without the site initialization, the virtual environment should be disabled.
+        self.assertEqual(no_site_config_vars['base'], site_config_vars['installed_base'])
+        self.assertEqual(no_site_config_vars['platbase'], site_config_vars['installed_platbase'])
+
+    @requires_subprocess()
+    def test_config_vars_recalculation_after_site_initialization(self):
+        script = textwrap.dedent("""
+            import sysconfig
+
+            before = sysconfig.get_config_vars()
+
+            import site
+            site.main()
+
+            after = sysconfig.get_config_vars()
+
+            import json
+            print(json.dumps({'before': before, 'after': after}, indent=2))
+        """)
+
+        with self.venv() as venv:
+            config_vars = json.loads(venv.run('-S', '-c', script).stdout)
+
+        self.assertNotEqual(config_vars['before'], config_vars['after'])
+        self.assertEqual(config_vars['after']['base'], venv.prefix)
+        #self.assertEqual(config_vars['after']['prefix'], venv.prefix)  # FIXME: prefix gets overwriten by _init_posix
+        #self.assertEqual(config_vars['after']['exec_prefix'], venv.prefix)  # FIXME: exec_prefix gets overwriten by _init_posix
+
+    @requires_subprocess()
+    def test_paths_depend_on_site_initialization(self):
+        script = textwrap.dedent("""
+            import sysconfig
+
+            paths = sysconfig.get_paths()
+
+            import json
+            print(json.dumps(paths, indent=2))
+        """)
+
+        with self.venv() as venv:
+            site_paths = json.loads(venv.run('-c', script).stdout)
+            no_site_paths = json.loads(venv.run('-S', '-c', script).stdout)
+
+        self.assertNotEqual(site_paths, no_site_paths)
+
+
 class MakefileTests(unittest.TestCase):
 
     @unittest.skipIf(sys.platform.startswith('win'),
diff --git a/Lib/test/test_tabnanny.py b/Lib/test/test_tabnanny.py
index cc122cafc7985c..30dcb3e3c4f4f9 100644
--- a/Lib/test/test_tabnanny.py
+++ b/Lib/test/test_tabnanny.py
@@ -315,7 +315,7 @@ def validate_cmd(self, *args, stdout="", stderr="", partial=False, expect_failur
     def test_with_errored_file(self):
         """Should displays error when errored python file is given."""
         with TemporaryPyFile(SOURCE_CODES["wrong_indented"]) as file_path:
-            stderr  = f"{file_path!r}: Token Error: "
+            stderr  = f"{file_path!r}: Indentation Error: "
             stderr += ('unindent does not match any outer indentation level'
                        ' (<string>, line 3)')
             self.validate_cmd(file_path, stderr=stderr, expect_failure=True)
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index c9c1097963a885..9a540765f8c05e 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -386,7 +386,7 @@ def test_is_tarfile_erroneous(self):
         self.assertFalse(tarfile.is_tarfile(tmpname))
 
         # is_tarfile works on path-like objects
-        self.assertFalse(tarfile.is_tarfile(pathlib.Path(tmpname)))
+        self.assertFalse(tarfile.is_tarfile(os_helper.FakePath(tmpname)))
 
         # is_tarfile works on file objects
         with open(tmpname, "rb") as fobj:
@@ -400,7 +400,7 @@ def test_is_tarfile_valid(self):
         self.assertTrue(tarfile.is_tarfile(self.tarname))
 
         # is_tarfile works on path-like objects
-        self.assertTrue(tarfile.is_tarfile(pathlib.Path(self.tarname)))
+        self.assertTrue(tarfile.is_tarfile(os_helper.FakePath(self.tarname)))
 
         # is_tarfile works on file objects
         with open(self.tarname, "rb") as fobj:
@@ -576,21 +576,23 @@ def test_bytes_name_attribute(self):
                 self.assertIsInstance(tar.name, bytes)
                 self.assertEqual(tar.name, os.path.abspath(fobj.name))
 
-    def test_pathlike_name(self):
-        tarname = pathlib.Path(self.tarname)
+    def test_pathlike_name(self, tarname=None):
+        if tarname is None:
+            tarname = self.tarname
+        expected = os.path.abspath(tarname)
+        tarname = os_helper.FakePath(tarname)
         with tarfile.open(tarname, mode=self.mode) as tar:
-            self.assertIsInstance(tar.name, str)
-            self.assertEqual(tar.name, os.path.abspath(os.fspath(tarname)))
+            self.assertEqual(tar.name, expected)
         with self.taropen(tarname) as tar:
-            self.assertIsInstance(tar.name, str)
-            self.assertEqual(tar.name, os.path.abspath(os.fspath(tarname)))
+            self.assertEqual(tar.name, expected)
         with tarfile.TarFile.open(tarname, mode=self.mode) as tar:
-            self.assertIsInstance(tar.name, str)
-            self.assertEqual(tar.name, os.path.abspath(os.fspath(tarname)))
+            self.assertEqual(tar.name, expected)
         if self.suffix == '':
             with tarfile.TarFile(tarname, mode='r') as tar:
-                self.assertIsInstance(tar.name, str)
-                self.assertEqual(tar.name, os.path.abspath(os.fspath(tarname)))
+                self.assertEqual(tar.name, expected)
+
+    def test_pathlike_bytes_name(self):
+        self.test_pathlike_name(os.fsencode(self.tarname))
 
     def test_illegal_mode_arg(self):
         with open(tmpname, 'wb'):
@@ -761,24 +763,24 @@ def test_deprecation_if_no_filter_passed_to_extract(self):
             # check that the stacklevel of the deprecation warning is correct:
             self.assertEqual(cm.filename, __file__)
 
-    def test_extractall_pathlike_name(self):
-        DIR = pathlib.Path(TEMPDIR) / "extractall"
+    def test_extractall_pathlike_dir(self):
+        DIR = os.path.join(TEMPDIR, "extractall")
         with os_helper.temp_dir(DIR), \
              tarfile.open(tarname, encoding="iso8859-1") as tar:
             directories = [t for t in tar if t.isdir()]
-            tar.extractall(DIR, directories, filter='fully_trusted')
+            tar.extractall(os_helper.FakePath(DIR), directories, filter='fully_trusted')
             for tarinfo in directories:
-                path = DIR / tarinfo.name
+                path = os.path.join(DIR, tarinfo.name)
                 self.assertEqual(os.path.getmtime(path), tarinfo.mtime)
 
-    def test_extract_pathlike_name(self):
+    def test_extract_pathlike_dir(self):
         dirtype = "ustar/dirtype"
-        DIR = pathlib.Path(TEMPDIR) / "extractall"
+        DIR = os.path.join(TEMPDIR, "extractall")
         with os_helper.temp_dir(DIR), \
              tarfile.open(tarname, encoding="iso8859-1") as tar:
             tarinfo = tar.getmember(dirtype)
-            tar.extract(tarinfo, path=DIR, filter='fully_trusted')
-            extracted = DIR / dirtype
+            tar.extract(tarinfo, path=os_helper.FakePath(DIR), filter='fully_trusted')
+            extracted = os.path.join(DIR, dirtype)
             self.assertEqual(os.path.getmtime(extracted), tarinfo.mtime)
 
     def test_init_close_fobj(self):
@@ -1266,6 +1268,48 @@ def test_pax_number_fields(self):
         finally:
             tar.close()
 
+    def test_pax_header_bad_formats(self):
+        # The fields from the pax header have priority over the
+        # TarInfo.
+        pax_header_replacements = (
+            b" foo=bar\n",
+            b"0 \n",
+            b"1 \n",
+            b"2 \n",
+            b"3 =\n",
+            b"4 =a\n",
+            b"1000000 foo=bar\n",
+            b"0 foo=bar\n",
+            b"-12 foo=bar\n",
+            b"000000000000000000000000036 foo=bar\n",
+        )
+        pax_headers = {"foo": "bar"}
+
+        for replacement in pax_header_replacements:
+            with self.subTest(header=replacement):
+                tar = tarfile.open(tmpname, "w", format=tarfile.PAX_FORMAT,
+                                   encoding="iso8859-1")
+                try:
+                    t = tarfile.TarInfo()
+                    t.name = "pax"  # non-ASCII
+                    t.uid = 1
+                    t.pax_headers = pax_headers
+                    tar.addfile(t)
+                finally:
+                    tar.close()
+
+                with open(tmpname, "rb") as f:
+                    data = f.read()
+                    self.assertIn(b"11 foo=bar\n", data)
+                    data = data.replace(b"11 foo=bar\n", replacement)
+
+                with open(tmpname, "wb") as f:
+                    f.truncate()
+                    f.write(data)
+
+                with self.assertRaisesRegex(tarfile.ReadError, r"method tar: ReadError\('invalid header'\)"):
+                    tarfile.open(tmpname, encoding="iso8859-1")
+
 
 class WriteTestBase(TarTest):
     # Put all write tests in here that are supposed to be tested
@@ -1390,11 +1434,11 @@ def test_ordered_recursion(self):
 
     def test_gettarinfo_pathlike_name(self):
         with tarfile.open(tmpname, self.mode) as tar:
-            path = pathlib.Path(TEMPDIR) / "file"
+            path = os.path.join(TEMPDIR, "file")
             with open(path, "wb") as fobj:
                 fobj.write(b"aaa")
-            tarinfo = tar.gettarinfo(path)
-            tarinfo2 = tar.gettarinfo(os.fspath(path))
+            tarinfo = tar.gettarinfo(os_helper.FakePath(path))
+            tarinfo2 = tar.gettarinfo(path)
             self.assertIsInstance(tarinfo.name, str)
             self.assertEqual(tarinfo.name, tarinfo2.name)
             self.assertEqual(tarinfo.size, 3)
@@ -1947,10 +1991,10 @@ def test_create_existing_taropen(self):
         self.assertIn("spameggs42", names[0])
 
     def test_create_pathlike_name(self):
-        with tarfile.open(pathlib.Path(tmpname), self.mode) as tobj:
+        with tarfile.open(os_helper.FakePath(tmpname), self.mode) as tobj:
             self.assertIsInstance(tobj.name, str)
             self.assertEqual(tobj.name, os.path.abspath(tmpname))
-            tobj.add(pathlib.Path(self.file_path))
+            tobj.add(os_helper.FakePath(self.file_path))
             names = tobj.getnames()
         self.assertEqual(len(names), 1)
         self.assertIn('spameggs42', names[0])
@@ -1961,10 +2005,10 @@ def test_create_pathlike_name(self):
         self.assertIn('spameggs42', names[0])
 
     def test_create_taropen_pathlike_name(self):
-        with self.taropen(pathlib.Path(tmpname), "x") as tobj:
+        with self.taropen(os_helper.FakePath(tmpname), "x") as tobj:
             self.assertIsInstance(tobj.name, str)
             self.assertEqual(tobj.name, os.path.abspath(tmpname))
-            tobj.add(pathlib.Path(self.file_path))
+            tobj.add(os_helper.FakePath(self.file_path))
             names = tobj.getnames()
         self.assertEqual(len(names), 1)
         self.assertIn('spameggs42', names[0])
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
index 553d54329d7939..d479f7d7515d9b 100644
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -51,7 +51,7 @@ def test_eval_null_in_result(self):
 
     def test_eval_surrogates_in_result(self):
         tcl = self.interp
-        self.assertIn(tcl.eval(r'set a "<\ud83d\udcbb>"'), '<\U0001f4bb>')
+        self.assertEqual(tcl.eval(r'set a "<\ud83d\udcbb>"'), '<\U0001f4bb>')
 
     def testEvalException(self):
         tcl = self.interp
@@ -61,11 +61,30 @@ def testEvalException2(self):
         tcl = self.interp
         self.assertRaises(TclError,tcl.eval,'this is wrong')
 
+    def test_eval_returns_tcl_obj(self):
+        tcl = self.interp.tk
+        tcl.eval(r'set a "\u20ac \ud83d\udcbb \0 \udcab"; regexp -about $a')
+        a = tcl.eval('set a')
+        expected = '\u20ac \U0001f4bb \0 \udced\udcb2\udcab'
+        self.assertEqual(a, expected)
+
     def testCall(self):
         tcl = self.interp
         tcl.call('set','a','1')
         self.assertEqual(tcl.call('set','a'),'1')
 
+    def test_call_passing_null(self):
+        tcl = self.interp
+        tcl.call('set', 'a', 'a\0b')  # ASCII-only
+        self.assertEqual(tcl.getvar('a'), 'a\x00b')
+        self.assertEqual(tcl.call('set', 'a'), 'a\x00b')
+        self.assertEqual(tcl.eval('set a'), 'a\x00b')
+
+        tcl.call('set', 'a', '\u20ac\0')  # non-ASCII
+        self.assertEqual(tcl.getvar('a'), '\u20ac\x00')
+        self.assertEqual(tcl.call('set', 'a'), '\u20ac\x00')
+        self.assertEqual(tcl.eval('set a'), '\u20ac\x00')
+
     def testCallException(self):
         tcl = self.interp
         self.assertRaises(TclError,tcl.call,'set','a')
@@ -74,11 +93,35 @@ def testCallException2(self):
         tcl = self.interp
         self.assertRaises(TclError,tcl.call,'this','is','wrong')
 
+    def test_call_returns_tcl_obj(self):
+        tcl = self.interp.tk
+        tcl.eval(r'set a "\u20ac \ud83d\udcbb \0 \udcab"; regexp -about $a')
+        a = tcl.call('set', 'a')
+        expected = '\u20ac \U0001f4bb \0 \udced\udcb2\udcab'
+        if self.wantobjects:
+            self.assertEqual(str(a), expected)
+            self.assertEqual(a.string, expected)
+            self.assertEqual(a.typename, 'regexp')
+        else:
+            self.assertEqual(a, expected)
+
     def testSetVar(self):
         tcl = self.interp
         tcl.setvar('a','1')
         self.assertEqual(tcl.eval('set a'),'1')
 
+    def test_setvar_passing_null(self):
+        tcl = self.interp
+        tcl.setvar('a', 'a\0b')  # ASCII-only
+        self.assertEqual(tcl.getvar('a'), 'a\x00b')
+        self.assertEqual(tcl.call('set', 'a'), 'a\x00b')
+        self.assertEqual(tcl.eval('set a'), 'a\x00b')
+
+        tcl.setvar('a', '\u20ac\0')  # non-ASCII
+        self.assertEqual(tcl.getvar('a'), '\u20ac\x00')
+        self.assertEqual(tcl.call('set', 'a'), '\u20ac\x00')
+        self.assertEqual(tcl.eval('set a'), '\u20ac\x00')
+
     def testSetVarArray(self):
         tcl = self.interp
         tcl.setvar('a(1)','1')
@@ -102,6 +145,18 @@ def testGetVarArrayException(self):
         tcl = self.interp
         self.assertRaises(TclError,tcl.getvar,'a(1)')
 
+    def test_getvar_returns_tcl_obj(self):
+        tcl = self.interp.tk
+        tcl.eval(r'set a "\u20ac \ud83d\udcbb \0 \udcab"; regexp -about $a')
+        a = tcl.getvar('a')
+        expected = '\u20ac \U0001f4bb \0 \udced\udcb2\udcab'
+        if self.wantobjects:
+            self.assertEqual(str(a), expected)
+            self.assertEqual(a.string, expected)
+            self.assertEqual(a.typename, 'regexp')
+        else:
+            self.assertEqual(a, expected)
+
     def testUnsetVar(self):
         tcl = self.interp
         tcl.setvar('a',1)
@@ -219,10 +274,18 @@ def test_evalfile_surrogates_in_result(self):
         with open(filename, 'wb') as f:
             f.write(b"""
             set a "<\xed\xa0\xbd\xed\xb2\xbb>"
+            """)
+        if tcl_version >= (9, 0):
+            self.assertRaises(TclError, tcl.evalfile, filename)
+        else:
+            tcl.evalfile(filename)
+            self.assertEqual(tcl.eval('set a'), '<\U0001f4bb>')
+
+        with open(filename, 'wb') as f:
+            f.write(b"""
             set b "<\\ud83d\\udcbb>"
             """)
         tcl.evalfile(filename)
-        self.assertEqual(tcl.eval('set a'), '<\U0001f4bb>')
         self.assertEqual(tcl.eval('set b'), '<\U0001f4bb>')
 
     def testEvalFileException(self):
@@ -541,6 +604,24 @@ def float_eq(actual, expected):
               '1 2 {3 4} {5 6} {}',
               (1, (2,), (3, 4), '5 6', ''))
 
+    def test_passing_tcl_obj(self):
+        tcl = self.interp.tk
+        a = None
+        def testfunc(arg):
+            nonlocal a
+            a = arg
+        self.interp.createcommand('testfunc', testfunc)
+        self.addCleanup(self.interp.tk.deletecommand, 'testfunc')
+        tcl.eval(r'set a "\u20ac \ud83d\udcbb \0 \udcab"; regexp -about $a')
+        tcl.eval(r'testfunc $a')
+        expected = '\u20ac \U0001f4bb \0 \udced\udcb2\udcab'
+        if self.wantobjects >= 2:
+            self.assertEqual(str(a), expected)
+            self.assertEqual(a.string, expected)
+            self.assertEqual(a.typename, 'regexp')
+        else:
+            self.assertEqual(a, expected)
+
     def test_splitlist(self):
         splitlist = self.interp.tk.splitlist
         call = self.interp.tk.call
@@ -665,6 +746,7 @@ def test_new_tcl_obj(self):
         support.check_disallow_instantiation(self, _tkinter.TkttType)
         support.check_disallow_instantiation(self, _tkinter.TkappType)
 
+
 class BigmemTclTest(unittest.TestCase):
 
     def setUp(self):
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index 19ddeaa169bf93..a5e182cef23dc5 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -63,16 +63,10 @@ def test_infer_return_type_multiples_and_none(self):
             tempfile._infer_return_type(b'', None, '')
 
     def test_infer_return_type_pathlib(self):
-        self.assertIs(str, tempfile._infer_return_type(pathlib.Path('/')))
+        self.assertIs(str, tempfile._infer_return_type(os_helper.FakePath('/')))
 
     def test_infer_return_type_pathlike(self):
-        class Path:
-            def __init__(self, path):
-                self.path = path
-
-            def __fspath__(self):
-                return self.path
-
+        Path = os_helper.FakePath
         self.assertIs(str, tempfile._infer_return_type(Path('/')))
         self.assertIs(bytes, tempfile._infer_return_type(Path(b'/')))
         self.assertIs(str, tempfile._infer_return_type('', Path('')))
@@ -443,7 +437,7 @@ def test_choose_directory(self):
         dir = tempfile.mkdtemp()
         try:
             self.do_create(dir=dir).write(b"blat")
-            self.do_create(dir=pathlib.Path(dir)).write(b"blat")
+            self.do_create(dir=os_helper.FakePath(dir)).write(b"blat")
         finally:
             support.gc_collect()  # For PyPy or other GCs.
             os.rmdir(dir)
@@ -681,7 +675,7 @@ def test_choose_directory(self):
         dir = tempfile.mkdtemp()
         try:
             self.do_create(dir=dir)
-            self.do_create(dir=pathlib.Path(dir))
+            self.do_create(dir=os_helper.FakePath(dir))
         finally:
             os.rmdir(dir)
 
@@ -782,7 +776,7 @@ def test_choose_directory(self):
         dir = tempfile.mkdtemp()
         try:
             os.rmdir(self.do_create(dir=dir))
-            os.rmdir(self.do_create(dir=pathlib.Path(dir)))
+            os.rmdir(self.do_create(dir=os_helper.FakePath(dir)))
         finally:
             os.rmdir(dir)
 
diff --git a/Lib/test/test_termios.py b/Lib/test/test_termios.py
index 58698ffac2d981..11928f04a8a893 100644
--- a/Lib/test/test_termios.py
+++ b/Lib/test/test_termios.py
@@ -94,7 +94,7 @@ def test_tcsendbreak(self):
         try:
             termios.tcsendbreak(self.fd, 1)
         except termios.error as exc:
-            if exc.args[0] == errno.ENOTTY and sys.platform.startswith('freebsd'):
+            if exc.args[0] == errno.ENOTTY and sys.platform.startswith(('freebsd', "netbsd")):
                 self.skipTest('termios.tcsendbreak() is not supported '
                               'with pseudo-terminals (?) on this platform')
             raise
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 329767aa82e336..c4cf3e6a14a61c 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -1171,6 +1171,42 @@ def __del__(self):
         self.assertEqual(out.strip(), b"OK")
         self.assertIn(b"can't create new thread at interpreter shutdown", err)
 
+    def test_start_new_thread_failed(self):
+        # gh-109746: if Python fails to start newly created thread
+        # due to failure of underlying PyThread_start_new_thread() call,
+        # its state should be removed from interpreter' thread states list
+        # to avoid its double cleanup
+        try:
+            from resource import setrlimit, RLIMIT_NPROC
+        except ImportError as err:
+            self.skipTest(err)  # RLIMIT_NPROC is specific to Linux and BSD
+        code = """if 1:
+            import resource
+            import _thread
+
+            def f():
+                print("shouldn't be printed")
+
+            limits = resource.getrlimit(resource.RLIMIT_NPROC)
+            [_, hard] = limits
+            resource.setrlimit(resource.RLIMIT_NPROC, (0, hard))
+
+            try:
+                handle = _thread.start_joinable_thread(f)
+            except RuntimeError:
+                print('ok')
+            else:
+                print('!skip!')
+                handle.join()
+        """
+        _, out, err = assert_python_ok("-u", "-c", code)
+        out = out.strip()
+        if b'!skip!' in out:
+            self.skipTest('RLIMIT_NPROC had no effect; probably superuser')
+        self.assertEqual(out, b'ok')
+        self.assertEqual(err, b'')
+
+
 class ThreadJoinOnShutdown(BaseTestCase):
 
     def _run_and_join(self, script):
diff --git a/Lib/test/test_threading_local.py b/Lib/test/test_threading_local.py
index f0b829a978feb5..3a58afd8194a32 100644
--- a/Lib/test/test_threading_local.py
+++ b/Lib/test/test_threading_local.py
@@ -208,6 +208,21 @@ def test_threading_local_clear_race(self):
 
         _testcapi.join_temporary_c_thread()
 
+    @support.cpython_only
+    def test_error(self):
+        class Loop(self._local):
+            attr = 1
+
+        # Trick the "if name == '__dict__':" test of __setattr__()
+        # to always be true
+        class NameCompareTrue:
+            def __eq__(self, other):
+                return True
+
+        loop = Loop()
+        with self.assertRaisesRegex(AttributeError, 'Loop.*read-only'):
+            loop.__setattr__(NameCompareTrue(), 2)
+
 
 class ThreadLocalTest(unittest.TestCase, BaseLocalTest):
     _local = _thread._local
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
index 293799ff68ea05..ee17c93f54cd88 100644
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -2,7 +2,6 @@
 from test.support import warnings_helper
 import decimal
 import enum
-import locale
 import math
 import platform
 import sys
@@ -19,7 +18,7 @@
 except ImportError:
     _testinternalcapi = None
 
-from test.support import skip_if_buggy_ucrt_strfptime
+from test.support import skip_if_buggy_ucrt_strfptime, SuppressCrashReport
 
 # Max year is only limited by the size of C int.
 SIZEOF_INT = sysconfig.get_config_var('SIZEOF_INT') or 4
@@ -158,10 +157,19 @@ def test_conversions(self):
         self.assertEqual(int(time.mktime(time.localtime(self.t))),
                          int(self.t))
 
-    def test_sleep(self):
+    def test_sleep_exceptions(self):
+        self.assertRaises(TypeError, time.sleep, [])
+        self.assertRaises(TypeError, time.sleep, "a")
+        self.assertRaises(TypeError, time.sleep, complex(0, 0))
+
         self.assertRaises(ValueError, time.sleep, -2)
         self.assertRaises(ValueError, time.sleep, -1)
-        time.sleep(1.2)
+        self.assertRaises(ValueError, time.sleep, -0.1)
+
+    def test_sleep(self):
+        for value in [-0.0, 0, 0.0, 1e-100, 1e-9, 1e-6, 1, 1.2]:
+            with self.subTest(value=value):
+                time.sleep(value)
 
     def test_epoch(self):
         # bpo-43869: Make sure that Python use the same Epoch on all platforms:
@@ -182,8 +190,44 @@ def test_strftime(self):
                 self.fail('conversion specifier: %r failed.' % format)
 
         self.assertRaises(TypeError, time.strftime, b'%S', tt)
-        # embedded null character
-        self.assertRaises(ValueError, time.strftime, '%S\0', tt)
+
+    def test_strftime_invalid_format(self):
+        tt = time.gmtime(self.t)
+        with SuppressCrashReport():
+            for i in range(1, 128):
+                format = ' %' + chr(i)
+                with self.subTest(format=format):
+                    try:
+                        time.strftime(format, tt)
+                    except ValueError as exc:
+                        self.assertEqual(str(exc), 'Invalid format string')
+
+    def test_strftime_special(self):
+        tt = time.gmtime(self.t)
+        s1 = time.strftime('%c', tt)
+        s2 = time.strftime('%B', tt)
+        # gh-52551, gh-78662: Unicode strings should pass through strftime,
+        # independently from locale.
+        self.assertEqual(time.strftime('\U0001f40d', tt), '\U0001f40d')
+        self.assertEqual(time.strftime('\U0001f4bb%c\U0001f40d%B', tt), f'\U0001f4bb{s1}\U0001f40d{s2}')
+        self.assertEqual(time.strftime('%c\U0001f4bb%B\U0001f40d', tt), f'{s1}\U0001f4bb{s2}\U0001f40d')
+        # Lone surrogates should pass through.
+        self.assertEqual(time.strftime('\ud83d', tt), '\ud83d')
+        self.assertEqual(time.strftime('\udc0d', tt), '\udc0d')
+        self.assertEqual(time.strftime('\ud83d%c\udc0d%B', tt), f'\ud83d{s1}\udc0d{s2}')
+        self.assertEqual(time.strftime('%c\ud83d%B\udc0d', tt), f'{s1}\ud83d{s2}\udc0d')
+        self.assertEqual(time.strftime('%c\udc0d%B\ud83d', tt), f'{s1}\udc0d{s2}\ud83d')
+        # Surrogate pairs should not recombine.
+        self.assertEqual(time.strftime('\ud83d\udc0d', tt), '\ud83d\udc0d')
+        self.assertEqual(time.strftime('%c\ud83d\udc0d%B', tt), f'{s1}\ud83d\udc0d{s2}')
+        # Surrogate-escaped bytes should not recombine.
+        self.assertEqual(time.strftime('\udcf0\udc9f\udc90\udc8d', tt), '\udcf0\udc9f\udc90\udc8d')
+        self.assertEqual(time.strftime('%c\udcf0\udc9f\udc90\udc8d%B', tt), f'{s1}\udcf0\udc9f\udc90\udc8d{s2}')
+        # gh-124531: The null character should not terminate the format string.
+        self.assertEqual(time.strftime('\0', tt), '\0')
+        self.assertEqual(time.strftime('\0'*1000, tt), '\0'*1000)
+        self.assertEqual(time.strftime('\0%c\0%B', tt), f'\0{s1}\0{s2}')
+        self.assertEqual(time.strftime('%c\0%B\0', tt), f'{s1}\0{s2}\0')
 
     def _bounds_checking(self, func):
         # Make sure that strftime() checks the bounds of the various parts
@@ -299,7 +343,7 @@ def test_strptime_exception_context(self):
         # additional check for IndexError branch (issue #19545)
         with self.assertRaises(ValueError) as e:
             time.strptime('19', '%Y %')
-        self.assertIs(e.exception.__suppress_context__, True)
+        self.assertIsNone(e.exception.__context__)
 
     def test_strptime_leap_year(self):
         # GH-70647: warns if parsing a format with a day and no year.
@@ -600,17 +644,8 @@ def test_get_clock_info(self):
 
 
 class TestLocale(unittest.TestCase):
-    def setUp(self):
-        self.oldloc = locale.setlocale(locale.LC_ALL)
-
-    def tearDown(self):
-        locale.setlocale(locale.LC_ALL, self.oldloc)
-
+    @support.run_with_locale('LC_ALL', 'fr_FR', '')
     def test_bug_3061(self):
-        try:
-            tmp = locale.setlocale(locale.LC_ALL, "fr_FR")
-        except locale.Error:
-            self.skipTest('could not set locale.LC_ALL to fr_FR')
         # This should not cause an exception
         time.strftime("%B", (2009,2,1,0,0,0,0,0,0))
 
@@ -654,8 +689,7 @@ def year4d(y):
             self.test_year('%04d', func=year4d)
 
     def skip_if_not_supported(y):
-        msg = "strftime() is limited to [1; 9999] with Visual Studio"
-        # Check that it doesn't crash for year > 9999
+        msg = f"strftime() does not support year {y} on this platform"
         try:
             time.strftime('%Y', (y,) + (0,) * 8)
         except ValueError:
diff --git a/Lib/test/test_tkinter/test_geometry_managers.py b/Lib/test/test_tkinter/test_geometry_managers.py
index f8f1c895c56340..d71a634a767310 100644
--- a/Lib/test/test_tkinter/test_geometry_managers.py
+++ b/Lib/test/test_tkinter/test_geometry_managers.py
@@ -10,6 +10,11 @@
 requires('gui')
 
 
+EXPECTED_FLOAT_ERRMSG = 'expected floating-point number but got "{}"'
+EXPECTED_FLOAT_OR_EMPTY_ERRMSG = 'expected floating-point number (or "" )?but got "{}"'
+EXPECTED_SCREEN_DISTANCE_ERRMSG = '(bad|expected) screen distance (but got )?"{}"'
+EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG = '(bad|expected) screen distance (or "" but got )?"{}"'
+
 class PackTest(AbstractWidgetTest, unittest.TestCase):
 
     test_keys = None
@@ -317,7 +322,8 @@ def test_place_configure_x(self):
         self.assertEqual(f2.place_info()['x'], '-10')
         self.root.update()
         self.assertEqual(f2.winfo_x(), 190)
-        with self.assertRaisesRegex(TclError, 'bad screen distance "spam"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('spam')):
             f2.place_configure(in_=f, x='spam')
 
     def test_place_configure_y(self):
@@ -334,7 +340,8 @@ def test_place_configure_y(self):
         self.assertEqual(f2.place_info()['y'], '-10')
         self.root.update()
         self.assertEqual(f2.winfo_y(), 110)
-        with self.assertRaisesRegex(TclError, 'bad screen distance "spam"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('spam')):
             f2.place_configure(in_=f, y='spam')
 
     def test_place_configure_relx(self):
@@ -351,8 +358,7 @@ def test_place_configure_relx(self):
         self.assertEqual(f2.place_info()['relx'], '1')
         self.root.update()
         self.assertEqual(f2.winfo_x(), 200)
-        with self.assertRaisesRegex(TclError, 'expected floating-point number '
-                                    'but got "spam"'):
+        with self.assertRaisesRegex(TclError, EXPECTED_FLOAT_ERRMSG.format('spam')):
             f2.place_configure(in_=f, relx='spam')
 
     def test_place_configure_rely(self):
@@ -369,8 +375,7 @@ def test_place_configure_rely(self):
         self.assertEqual(f2.place_info()['rely'], '1')
         self.root.update()
         self.assertEqual(f2.winfo_y(), 120)
-        with self.assertRaisesRegex(TclError, 'expected floating-point number '
-                                    'but got "spam"'):
+        with self.assertRaisesRegex(TclError, EXPECTED_FLOAT_ERRMSG.format('spam')):
             f2.place_configure(in_=f, rely='spam')
 
     def test_place_configure_anchor(self):
@@ -391,7 +396,8 @@ def test_place_configure_width(self):
         f2.place_configure(width='')
         self.root.update()
         self.assertEqual(f2.winfo_width(), 30)
-        with self.assertRaisesRegex(TclError, 'bad screen distance "abcd"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG.format('abcd')):
             f2.place_configure(width='abcd')
 
     def test_place_configure_height(self):
@@ -402,7 +408,8 @@ def test_place_configure_height(self):
         f2.place_configure(height='')
         self.root.update()
         self.assertEqual(f2.winfo_height(), 60)
-        with self.assertRaisesRegex(TclError, 'bad screen distance "abcd"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG.format('abcd')):
             f2.place_configure(height='abcd')
 
     def test_place_configure_relwidth(self):
@@ -413,8 +420,7 @@ def test_place_configure_relwidth(self):
         f2.place_configure(relwidth='')
         self.root.update()
         self.assertEqual(f2.winfo_width(), 30)
-        with self.assertRaisesRegex(TclError, 'expected floating-point number '
-                                    'but got "abcd"'):
+        with self.assertRaisesRegex(TclError, EXPECTED_FLOAT_OR_EMPTY_ERRMSG.format('abcd')):
             f2.place_configure(relwidth='abcd')
 
     def test_place_configure_relheight(self):
@@ -425,8 +431,7 @@ def test_place_configure_relheight(self):
         f2.place_configure(relheight='')
         self.root.update()
         self.assertEqual(f2.winfo_height(), 60)
-        with self.assertRaisesRegex(TclError, 'expected floating-point number '
-                                    'but got "abcd"'):
+        with self.assertRaisesRegex(TclError, EXPECTED_FLOAT_OR_EMPTY_ERRMSG.format('abcd')):
             f2.place_configure(relheight='abcd')
 
     def test_place_configure_bordermode(self):
@@ -629,7 +634,8 @@ def test_grid_columnconfigure(self):
         self.assertEqual(self.root.grid_columnconfigure(0, 'weight'), 4)
 
     def test_grid_columnconfigure_minsize(self):
-        with self.assertRaisesRegex(TclError, 'bad screen distance "foo"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('foo')):
             self.root.grid_columnconfigure(0, minsize='foo')
         self.root.grid_columnconfigure(0, minsize=10)
         self.assertEqual(self.root.grid_columnconfigure(0, 'minsize'), 10)
@@ -646,7 +652,8 @@ def test_grid_columnconfigure_weight(self):
         self.assertEqual(self.root.grid_columnconfigure(0)['weight'], 3)
 
     def test_grid_columnconfigure_pad(self):
-        with self.assertRaisesRegex(TclError, 'bad screen distance "foo"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('foo')):
             self.root.grid_columnconfigure(0, pad='foo')
         with self.assertRaisesRegex(TclError, 'invalid arg "-pad": '
                                     'should be non-negative'):
@@ -683,7 +690,8 @@ def test_grid_rowconfigure(self):
         self.assertEqual(self.root.grid_rowconfigure(0, 'weight'), 4)
 
     def test_grid_rowconfigure_minsize(self):
-        with self.assertRaisesRegex(TclError, 'bad screen distance "foo"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('foo')):
             self.root.grid_rowconfigure(0, minsize='foo')
         self.root.grid_rowconfigure(0, minsize=10)
         self.assertEqual(self.root.grid_rowconfigure(0, 'minsize'), 10)
@@ -700,7 +708,8 @@ def test_grid_rowconfigure_weight(self):
         self.assertEqual(self.root.grid_rowconfigure(0)['weight'], 3)
 
     def test_grid_rowconfigure_pad(self):
-        with self.assertRaisesRegex(TclError, 'bad screen distance "foo"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('foo')):
             self.root.grid_rowconfigure(0, pad='foo')
         with self.assertRaisesRegex(TclError, 'invalid arg "-pad": '
                                     'should be non-negative'):
@@ -818,9 +827,11 @@ def test_grid_location(self):
             self.root.grid_location(0)
         with self.assertRaises(TypeError):
             self.root.grid_location(0, 0, 0)
-        with self.assertRaisesRegex(TclError, 'bad screen distance "x"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('x')):
             self.root.grid_location('x', 'y')
-        with self.assertRaisesRegex(TclError, 'bad screen distance "y"'):
+        with self.assertRaisesRegex(TclError,
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('y')):
             self.root.grid_location('1c', 'y')
         t = self.root
         # de-maximize
diff --git a/Lib/test/test_tkinter/test_images.py b/Lib/test/test_tkinter/test_images.py
index b8e549e314d27d..38371fe00d6eb5 100644
--- a/Lib/test/test_tkinter/test_images.py
+++ b/Lib/test/test_tkinter/test_images.py
@@ -581,13 +581,15 @@ def test_write(self):
         image.write(filename, background='#ff0000')
         image4 = tkinter.PhotoImage('::img::test4', master=self.root,
                                     format='ppm', file=filename)
-        self.assertEqual(image4.get(0, 0), (255, 0, 0))
+        self.assertEqual(image4.get(0, 0), (255, 0, 0) if self.wantobjects else '255 0 0')
         self.assertEqual(image4.get(4, 6), image.get(4, 6))
 
         image.write(filename, grayscale=True)
         image5 = tkinter.PhotoImage('::img::test5', master=self.root,
                                     format='ppm', file=filename)
         c = image5.get(4, 6)
+        if not self.wantobjects:
+            c = c.split()
         self.assertTrue(c[0] == c[1] == c[2], c)
 
     def test_data(self):
@@ -597,7 +599,10 @@ def test_data(self):
         self.assertIsInstance(data, tuple)
         for row in data:
             self.assertIsInstance(row, str)
-        self.assertEqual(data[6].split()[4], '#%02x%02x%02x' % image.get(4, 6))
+        c = image.get(4, 6)
+        if not self.wantobjects:
+            c = tuple(map(int, c.split()))
+        self.assertEqual(data[6].split()[4], '#%02x%02x%02x' % c)
 
         data = image.data('ppm')
         image2 = tkinter.PhotoImage('::img::test2', master=self.root,
@@ -622,13 +627,15 @@ def test_data(self):
         data = image.data('ppm', background='#ff0000')
         image4 = tkinter.PhotoImage('::img::test4', master=self.root,
                                     format='ppm', data=data)
-        self.assertEqual(image4.get(0, 0), (255, 0, 0))
+        self.assertEqual(image4.get(0, 0), (255, 0, 0) if self.wantobjects else '255 0 0')
         self.assertEqual(image4.get(4, 6), image.get(4, 6))
 
         data = image.data('ppm', grayscale=True)
         image5 = tkinter.PhotoImage('::img::test5', master=self.root,
                                     format='ppm', data=data)
         c = image5.get(4, 6)
+        if not self.wantobjects:
+            c = c.split()
         self.assertTrue(c[0] == c[1] == c[2], c)
 
 
diff --git a/Lib/test/test_tkinter/test_misc.py b/Lib/test/test_tkinter/test_misc.py
index 6dca2a3920e06a..dbaf970161ce78 100644
--- a/Lib/test/test_tkinter/test_misc.py
+++ b/Lib/test/test_tkinter/test_misc.py
@@ -4,7 +4,8 @@
 from tkinter import TclError
 import enum
 from test import support
-from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tk
+from test.test_tkinter.support import (AbstractTkTest, AbstractDefaultRootTest,
+                                       requires_tk, get_tk_patchlevel)
 
 support.requires('gui')
 
@@ -30,12 +31,20 @@ def test_repr(self):
         self.assertEqual(repr(f), '<tkinter.Frame object .top.child>')
 
     def test_generated_names(self):
+        class Button2(tkinter.Button):
+            pass
+
         t = tkinter.Toplevel(self.root)
         f = tkinter.Frame(t)
         f2 = tkinter.Frame(t)
+        self.assertNotEqual(str(f), str(f2))
         b = tkinter.Button(f2)
-        for name in str(b).split('.'):
+        b2 = Button2(f2)
+        for name in str(b).split('.') + str(b2).split('.'):
             self.assertFalse(name.isidentifier(), msg=repr(name))
+        b3 = tkinter.Button(f2)
+        b4 = Button2(f2)
+        self.assertEqual(len({str(b), str(b2), str(b3), str(b4)}), 4)
 
     @requires_tk(8, 6, 6)
     def test_tk_busy(self):
@@ -476,6 +485,15 @@ def test_info_patchlevel(self):
             self.assertEqual(vi.micro, 0)
         self.assertTrue(str(vi).startswith(f'{vi.major}.{vi.minor}'))
 
+    def test_embedded_null(self):
+        widget = tkinter.Entry(self.root)
+        widget.insert(0, 'abc\0def')  # ASCII-only
+        widget.selection_range(0, 'end')
+        self.assertEqual(widget.selection_get(), 'abc\x00def')
+        widget.insert(0, '\u20ac\0')  # non-ASCII
+        widget.selection_range(0, 'end')
+        self.assertEqual(widget.selection_get(), '\u20ac\0abc\x00def')
+
 
 class WmTest(AbstractTkTest, unittest.TestCase):
 
@@ -531,6 +549,309 @@ def test_wm_attribute(self):
         self.assertEqual(w.wm_attributes('alpha'),
                          1.0 if self.wantobjects else '1.0')
 
+    def test_wm_iconbitmap(self):
+        t = tkinter.Toplevel(self.root)
+        self.assertEqual(t.wm_iconbitmap(), '')
+        t.wm_iconbitmap('hourglass')
+        bug = False
+        if t._windowingsystem == 'aqua':
+            # Tk bug 13ac26b35dc55f7c37f70b39d59d7ef3e63017c8.
+            patchlevel = get_tk_patchlevel(t)
+            if patchlevel < (8, 6, 17) or (9, 0) <= patchlevel < (9, 0, 2):
+                bug = True
+        if not bug:
+            self.assertEqual(t.wm_iconbitmap(), 'hourglass')
+        self.assertEqual(self.root.wm_iconbitmap(), '')
+        t.wm_iconbitmap('')
+        self.assertEqual(t.wm_iconbitmap(), '')
+
+        if t._windowingsystem == 'win32':
+            t.wm_iconbitmap(default='hourglass')
+            self.assertEqual(t.wm_iconbitmap(), 'hourglass')
+            self.assertEqual(self.root.wm_iconbitmap(), '')
+            t.wm_iconbitmap(default='')
+            self.assertEqual(t.wm_iconbitmap(), '')
+
+        t.destroy()
+
+
+class EventTest(AbstractTkTest, unittest.TestCase):
+
+    def test_focus(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<FocusIn>', events.append)
+
+        f.focus_force()
+        self.root.update()
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.FocusIn)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, '??')
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, '??')
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, '??')
+        self.assertEqual(e.y, '??')
+        self.assertEqual(e.x_root, '??')
+        self.assertEqual(e.y_root, '??')
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e), '<FocusIn event>')
+
+    def test_configure(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<Configure>', events.append)
+
+        f.configure(height=120, borderwidth=10)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.Configure)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, '??')
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, '??')
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, 150)
+        self.assertEqual(e.height, 100)
+        self.assertEqual(e.x, 0)
+        self.assertEqual(e.y, 0)
+        self.assertEqual(e.x_root, '??')
+        self.assertEqual(e.y_root, '??')
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e), '<Configure event x=0 y=0 width=150 height=100>')
+
+    def test_event_generate_key_press(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<KeyPress>', events.append)
+        f.focus_force()
+
+        f.event_generate('<Alt-z>')
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.KeyPress)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, 0)
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, '??')
+        self.assertIsInstance(e.state, int)
+        self.assertNotEqual(e.state, 0)
+        self.assertEqual(e.char, 'z')
+        self.assertIsInstance(e.keycode, int)
+        self.assertNotEqual(e.keycode, 0)
+        self.assertEqual(e.keysym, 'z')
+        self.assertEqual(e.keysym_num, ord('z'))
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, -1 - f.winfo_rootx())
+        self.assertEqual(e.y, -1 - f.winfo_rooty())
+        self.assertEqual(e.x_root, -1)
+        self.assertEqual(e.y_root, -1)
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e),
+            f"<KeyPress event state={e.state:#x} "
+            f"keysym=z keycode={e.keycode} char='z' x={e.x} y={e.y}>")
+
+    def test_event_generate_enter(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<Enter>', events.append)
+
+        f.event_generate('<Enter>', x=100, y=50)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.Enter)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, 0)
+        self.assertIs(e.send_event, False)
+        self.assertIs(e.focus, False)
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, 0)
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, 100)
+        self.assertEqual(e.y, 50)
+        self.assertEqual(e.x_root, 100 + f.winfo_rootx())
+        self.assertEqual(e.y_root, 50 + f.winfo_rooty())
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e), '<Enter event focus=False x=100 y=50>')
+
+    def test_event_generate_button_press(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<ButtonPress>', events.append)
+        f.focus_force()
+
+        f.event_generate('<Button-1>', x=100, y=50)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.ButtonPress)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, 0)
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, 1)
+        self.assertEqual(e.state, 0)
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, 100)
+        self.assertEqual(e.y, 50)
+        self.assertEqual(e.x_root, f.winfo_rootx() + 100)
+        self.assertEqual(e.y_root, f.winfo_rooty() + 50)
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e), '<ButtonPress event num=1 x=100 y=50>')
+
+    def test_event_generate_motion(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<Motion>', events.append)
+        f.focus_force()
+
+        f.event_generate('<B1-Motion>', x=100, y=50)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.Motion)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, 0)
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, 0x100)
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, 100)
+        self.assertEqual(e.y, 50)
+        self.assertEqual(e.x_root, f.winfo_rootx() + 100)
+        self.assertEqual(e.y_root, f.winfo_rooty() + 50)
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e), '<Motion event state=Button1 x=100 y=50>')
+
+    def test_event_generate_mouse_wheel(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<MouseWheel>', events.append)
+        f.focus_force()
+
+        f.event_generate('<MouseWheel>', x=100, y=50, delta=-5)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.MouseWheel)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.time, 0)
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, 0)
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, 100)
+        self.assertEqual(e.y, 50)
+        self.assertEqual(e.x_root, f.winfo_rootx() + 100)
+        self.assertEqual(e.y_root, f.winfo_rooty() + 50)
+        self.assertEqual(e.delta, -5)
+        self.assertEqual(repr(e), '<MouseWheel event delta=-5 x=100 y=50>')
+
+    def test_generate_event_virtual_event(self):
+        f = tkinter.Frame(self.root, width=150, height=100)
+        f.pack()
+        self.root.wait_visibility()  # needed on Windows
+        self.root.update_idletasks()
+
+        events = []
+        f.bind('<<Spam>>', events.append)
+        f.focus_force()
+
+        f.event_generate('<<Spam>>', x=50)
+        self.assertEqual(len(events), 1, events)
+        e = events[0]
+        self.assertIs(e.type, tkinter.EventType.VirtualEvent)
+        self.assertIs(e.widget, f)
+        self.assertIsInstance(e.serial, int)
+        self.assertEqual(e.time, 0)
+        self.assertIs(e.send_event, False)
+        self.assertFalse(hasattr(e, 'focus'))
+        self.assertEqual(e.num, '??')
+        self.assertEqual(e.state, 0)
+        self.assertEqual(e.char, '??')
+        self.assertEqual(e.keycode, '??')
+        self.assertEqual(e.keysym, '??')
+        self.assertEqual(e.keysym_num, '??')
+        self.assertEqual(e.width, '??')
+        self.assertEqual(e.height, '??')
+        self.assertEqual(e.x, 50)
+        self.assertEqual(e.y, 0)
+        self.assertEqual(e.x_root, f.winfo_rootx() + 50)
+        self.assertEqual(e.y_root, -1)
+        self.assertEqual(e.delta, 0)
+        self.assertEqual(repr(e),
+            f"<VirtualEvent event x=50 y=0>")
+
 
 class BindTest(AbstractTkTest, unittest.TestCase):
 
diff --git a/Lib/test/test_tkinter/test_variables.py b/Lib/test/test_tkinter/test_variables.py
index c1d232e2febc7a..def7aec077e800 100644
--- a/Lib/test/test_tkinter/test_variables.py
+++ b/Lib/test/test_tkinter/test_variables.py
@@ -6,7 +6,7 @@
 from tkinter import (Variable, StringVar, IntVar, DoubleVar, BooleanVar, Tcl,
                      TclError)
 from test.support import ALWAYS_EQ
-from test.test_tkinter.support import AbstractDefaultRootTest
+from test.test_tkinter.support import AbstractDefaultRootTest, tcl_version
 
 
 class Var(Variable):
@@ -112,6 +112,8 @@ def test_initialize(self):
         self.assertTrue(v.side_effect)
 
     def test_trace_old(self):
+        if tcl_version >= (9, 0):
+            self.skipTest('requires Tcl version < 9.0')
         # Old interface
         v = Variable(self.root)
         vname = str(v)
diff --git a/Lib/test/test_tkinter/test_widgets.py b/Lib/test/test_tkinter/test_widgets.py
index 85bf5ff7652b69..9ea764ca2a39d8 100644
--- a/Lib/test/test_tkinter/test_widgets.py
+++ b/Lib/test/test_tkinter/test_widgets.py
@@ -4,7 +4,7 @@
 import os
 from test.support import requires
 
-from test.test_tkinter.support import (requires_tk,
+from test.test_tkinter.support import (requires_tk, tk_version,
                                   get_tk_patchlevel, widget_eq,
                                   AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (
@@ -14,6 +14,9 @@
 requires('gui')
 
 
+EXPECTED_SCREEN_DISTANCE_ERRMSG = '(bad|expected) screen distance (but got )?"{}"'
+EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG = '(bad|expected) screen distance (or "" but got )?"{}"'
+
 def float_round(x):
     return float(round(x))
 
@@ -58,11 +61,11 @@ def test_configure_visual(self):
 @add_standard_options(StandardOptionsTests)
 class ToplevelTest(AbstractToplevelTest, unittest.TestCase):
     OPTIONS = (
-        'background', 'borderwidth',
+        'background', 'backgroundimage', 'borderwidth',
         'class', 'colormap', 'container', 'cursor', 'height',
         'highlightbackground', 'highlightcolor', 'highlightthickness',
         'menu', 'padx', 'pady', 'relief', 'screen',
-        'takefocus', 'use', 'visual', 'width',
+        'takefocus', 'tile', 'use', 'visual', 'width',
     )
 
     def create(self, **kwargs):
@@ -101,10 +104,10 @@ def test_configure_use(self):
 @add_standard_options(StandardOptionsTests)
 class FrameTest(AbstractToplevelTest, unittest.TestCase):
     OPTIONS = (
-        'background', 'borderwidth',
+        'background', 'backgroundimage', 'borderwidth',
         'class', 'colormap', 'container', 'cursor', 'height',
         'highlightbackground', 'highlightcolor', 'highlightthickness',
-        'padx', 'pady', 'relief', 'takefocus', 'visual', 'width',
+        'padx', 'pady', 'relief', 'takefocus', 'tile', 'visual', 'width',
     )
 
     def create(self, **kwargs):
@@ -141,11 +144,9 @@ def test_configure_labelwidget(self):
 
 class AbstractLabelTest(AbstractWidgetTest, IntegerSizeTests):
     _conv_pixels = False
-
-    def test_configure_highlightthickness(self):
-        widget = self.create()
-        self.checkPixelsParam(widget, 'highlightthickness',
-                              0, 1.3, 2.6, 6, -2, '10p')
+    _clip_highlightthickness = tk_version >= (8, 7)
+    _clip_pad = tk_version >= (8, 7)
+    _clip_borderwidth = tk_version >= (8, 7)
 
 
 @add_standard_options(StandardOptionsTests)
@@ -277,6 +278,9 @@ class MenubuttonTest(AbstractLabelTest, unittest.TestCase):
         'underline', 'width', 'wraplength',
     )
     _conv_pixels = round
+    _clip_highlightthickness = True
+    _clip_pad = True
+    _clip_borderwidth = False
 
     def create(self, **kwargs):
         return tkinter.Menubutton(self.root, **kwargs)
@@ -290,9 +294,6 @@ def test_configure_height(self):
         widget = self.create()
         self.checkIntegerParam(widget, 'height', 100, -100, 0, conv=str)
 
-    test_configure_highlightthickness = \
-        StandardOptionsTests.test_configure_highlightthickness
-
     def test_configure_image(self):
         widget = self.create()
         image = tkinter.PhotoImage(master=self.root, name='image1')
@@ -313,16 +314,6 @@ def test_configure_menu(self):
         self.checkParam(widget, 'menu', menu, eq=widget_eq)
         menu.destroy()
 
-    def test_configure_padx(self):
-        widget = self.create()
-        self.checkPixelsParam(widget, 'padx', 3, 4.4, 5.6, '12m')
-        self.checkParam(widget, 'padx', -2, expected=0)
-
-    def test_configure_pady(self):
-        widget = self.create()
-        self.checkPixelsParam(widget, 'pady', 3, 4.4, 5.6, '12m')
-        self.checkParam(widget, 'pady', -2, expected=0)
-
     def test_configure_width(self):
         widget = self.create()
         self.checkIntegerParam(widget, 'width', 402, -402, 0, conv=str)
@@ -347,7 +338,8 @@ class EntryTest(AbstractWidgetTest, unittest.TestCase):
         'highlightbackground', 'highlightcolor', 'highlightthickness',
         'insertbackground', 'insertborderwidth',
         'insertofftime', 'insertontime', 'insertwidth',
-        'invalidcommand', 'justify', 'readonlybackground', 'relief',
+        'invalidcommand', 'justify', 'placeholder', 'placeholderforeground',
+        'readonlybackground', 'relief',
         'selectbackground', 'selectborderwidth', 'selectforeground',
         'show', 'state', 'takefocus', 'textvariable',
         'validate', 'validatecommand', 'width', 'xscrollcommand',
@@ -441,8 +433,8 @@ class SpinboxTest(EntryTest, unittest.TestCase):
         'increment',
         'insertbackground', 'insertborderwidth',
         'insertofftime', 'insertontime', 'insertwidth',
-        'invalidcommand', 'justify', 'relief', 'readonlybackground',
-        'repeatdelay', 'repeatinterval',
+        'invalidcommand', 'justify', 'placeholder', 'placeholderforeground',
+        'relief', 'readonlybackground', 'repeatdelay', 'repeatinterval',
         'selectbackground', 'selectborderwidth', 'selectforeground',
         'state', 'takefocus', 'textvariable', 'to',
         'validate', 'validatecommand', 'values',
@@ -489,8 +481,12 @@ def test_configure_from(self):
         widget = self.create()
         self.checkParam(widget, 'to', 100.0)
         self.checkFloatParam(widget, 'from', -10, 10.2, 11.7)
-        self.checkInvalidParam(widget, 'from', 200,
-                errmsg='-to value must be greater than -from value')
+        if tk_version >= (8, 7):
+            self.checkFloatParam(widget, 'from', 200, expected=100)
+        else:
+            self.checkInvalidParam(
+                    widget, 'from', 200,
+                    errmsg='-to value must be greater than -from value')
 
     def test_configure_increment(self):
         widget = self.create()
@@ -500,8 +496,12 @@ def test_configure_to(self):
         widget = self.create()
         self.checkParam(widget, 'from', -100.0)
         self.checkFloatParam(widget, 'to', -10, 10.2, 11.7)
-        self.checkInvalidParam(widget, 'to', -200,
-                errmsg='-to value must be greater than -from value')
+        if tk_version >= (8, 7):
+            self.checkFloatParam(widget, 'to', -200, expected=-100)
+        else:
+            self.checkInvalidParam(
+                    widget, 'to', -200,
+                    errmsg='-to value must be greater than -from value')
 
     def test_configure_values(self):
         # XXX
@@ -660,11 +660,13 @@ def test_configure_tabs(self):
         widget = self.create()
         self.checkParam(widget, 'tabs', (10.2, 20.7, '1i', '2i'))
         self.checkParam(widget, 'tabs', '10.2 20.7 1i 2i',
-                        expected=('10.2', '20.7', '1i', '2i'))
+                        expected=(10.2, 20.7, '1i', '2i')
+                                 if get_tk_patchlevel(self.root) >= (8, 6, 14)
+                                 else ('10.2', '20.7', '1i', '2i'))
         self.checkParam(widget, 'tabs', '2c left 4c 6c center',
                         expected=('2c', 'left', '4c', '6c', 'center'))
         self.checkInvalidParam(widget, 'tabs', 'spam',
-                               errmsg='bad screen distance "spam"')
+                errmsg=EXPECTED_SCREEN_DISTANCE_ERRMSG.format('spam'))
 
     def test_configure_tabstyle(self):
         widget = self.create()
@@ -858,24 +860,27 @@ def test_create_line(self):
 
     def test_create_polygon(self):
         c = self.create()
-        i1 = c.create_polygon(20, 30, 40, 50, 60, 10)
+        tk87 = tk_version >= (8, 7)
+        # In Tk < 8.7 polygons are filled, but has no outline by default.
+        # This affects its size, so always explicitly specify outline.
+        i1 = c.create_polygon(20, 30, 40, 50, 60, 10, outline='red')
         self.assertEqual(c.coords(i1), [20.0, 30.0, 40.0, 50.0, 60.0, 10.0])
-        self.assertEqual(c.bbox(i1), (19, 9, 61, 51))
+        self.assertEqual(c.bbox(i1), (18, 8, 62, 52))
         self.assertEqual(c.itemcget(i1, 'joinstyle'), 'round')
         self.assertEqual(c.itemcget(i1, 'smooth'), '0')
         self.assertEqual(c.itemcget(i1, 'splinestep'), '12')
 
-        i2 = c.create_polygon([21, 31, 41, 51, 61, 11])
+        i2 = c.create_polygon([21, 31, 41, 51, 61, 11], outline='red')
         self.assertEqual(c.coords(i2), [21.0, 31.0, 41.0, 51.0, 61.0, 11.0])
-        self.assertEqual(c.bbox(i2), (20, 10, 62, 52))
+        self.assertEqual(c.bbox(i2), (19, 9, 63, 53))
 
-        i3 = c.create_polygon((22, 32), (42, 52), (62, 12))
+        i3 = c.create_polygon((22, 32), (42, 52), (62, 12), outline='red')
         self.assertEqual(c.coords(i3), [22.0, 32.0, 42.0, 52.0, 62.0, 12.0])
-        self.assertEqual(c.bbox(i3), (21, 11, 63, 53))
+        self.assertEqual(c.bbox(i3), (20, 10, 64, 54))
 
-        i4 = c.create_polygon([(23, 33), (43, 53), (63, 13)])
+        i4 = c.create_polygon([(23, 33), (43, 53), (63, 13)], outline='red')
         self.assertEqual(c.coords(i4), [23.0, 33.0, 43.0, 53.0, 63.0, 13.0])
-        self.assertEqual(c.bbox(i4), (22, 12, 64, 54))
+        self.assertEqual(c.bbox(i4), (21, 11, 65, 55))
 
         self.assertRaises(TclError, c.create_polygon, 20, 30, 60)
         self.assertRaises(TclError, c.create_polygon, [20, 30, 60])
@@ -999,12 +1004,16 @@ def test_itemconfigure(self):
             widget.itemconfigure()
         with self.assertRaisesRegex(TclError, 'bad listbox index "red"'):
             widget.itemconfigure('red')
+        if get_tk_patchlevel(self.root) >= (8, 6, 14):
+            prefix = ('background', '', '', '')
+        else:
+            prefix = ('background', 'background', 'Background', '')
         self.assertEqual(widget.itemconfigure(0, 'background'),
-                         ('background', 'background', 'Background', '', 'red'))
+                         (*prefix, 'red'))
         self.assertEqual(widget.itemconfigure('end', 'background'),
-                         ('background', 'background', 'Background', '', 'violet'))
+                         (*prefix, 'violet'))
         self.assertEqual(widget.itemconfigure('@0,0', 'background'),
-                         ('background', 'background', 'Background', '', 'red'))
+                         (*prefix, 'red'))
 
         d = widget.itemconfigure(0)
         self.assertIsInstance(d, dict)
@@ -1168,18 +1177,16 @@ class ScrollbarTest(AbstractWidgetTest, unittest.TestCase):
     def create(self, **kwargs):
         return tkinter.Scrollbar(self.root, **kwargs)
 
-    def test_configure_activerelief(self):
-        widget = self.create()
-        self.checkReliefParam(widget, 'activerelief')
-
     def test_configure_elementborderwidth(self):
         widget = self.create()
-        self.checkPixelsParam(widget, 'elementborderwidth', 4.3, 5.6, -2, '1m')
+        self.checkPixelsParam(widget, 'elementborderwidth', 4.3, 5.6, '1m')
+        expected = self._default_pixels if tk_version >= (8, 7) else -2
+        self.checkParam(widget, 'elementborderwidth', -2, expected=expected)
 
     def test_configure_orient(self):
         widget = self.create()
         self.checkEnumParam(widget, 'orient', 'vertical', 'horizontal',
-                errmsg='bad orientation "{}": must be vertical or horizontal')
+                            fullname='orientation', allow_empty=True)
 
     def test_activate(self):
         sb = self.create()
@@ -1250,7 +1257,8 @@ def test_configure_proxyborderwidth(self):
     @requires_tk(8, 6, 5)
     def test_configure_proxyrelief(self):
         widget = self.create()
-        self.checkReliefParam(widget, 'proxyrelief')
+        self.checkReliefParam(widget, 'proxyrelief',
+                              allow_empty=(tk_version >= (8, 7)))
 
     def test_configure_sashcursor(self):
         widget = self.create()
@@ -1323,7 +1331,7 @@ def test_paneconfigure_height(self):
         p, b, c = self.create2()
         self.check_paneconfigure(p, b, 'height', 10, 10)
         self.check_paneconfigure_bad(p, b, 'height',
-                                     'bad screen distance "badValue"')
+                EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG.format('badValue'))
 
     def test_paneconfigure_hide(self):
         p, b, c = self.create2()
@@ -1335,19 +1343,19 @@ def test_paneconfigure_minsize(self):
         p, b, c = self.create2()
         self.check_paneconfigure(p, b, 'minsize', 10, 10)
         self.check_paneconfigure_bad(p, b, 'minsize',
-                                     'bad screen distance "badValue"')
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('badValue'))
 
     def test_paneconfigure_padx(self):
         p, b, c = self.create2()
         self.check_paneconfigure(p, b, 'padx', 1.3, 1)
         self.check_paneconfigure_bad(p, b, 'padx',
-                                     'bad screen distance "badValue"')
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('badValue'))
 
     def test_paneconfigure_pady(self):
         p, b, c = self.create2()
         self.check_paneconfigure(p, b, 'pady', 1.3, 1)
         self.check_paneconfigure_bad(p, b, 'pady',
-                                     'bad screen distance "badValue"')
+                EXPECTED_SCREEN_DISTANCE_ERRMSG.format('badValue'))
 
     def test_paneconfigure_sticky(self):
         p, b, c = self.create2()
@@ -1368,13 +1376,14 @@ def test_paneconfigure_width(self):
         p, b, c = self.create2()
         self.check_paneconfigure(p, b, 'width', 10, 10)
         self.check_paneconfigure_bad(p, b, 'width',
-                                     'bad screen distance "badValue"')
+                EXPECTED_SCREEN_DISTANCE_OR_EMPTY_ERRMSG.format('badValue'))
 
 
 @add_standard_options(StandardOptionsTests)
 class MenuTest(AbstractWidgetTest, unittest.TestCase):
     OPTIONS = (
         'activebackground', 'activeborderwidth', 'activeforeground',
+        'activerelief',
         'background', 'borderwidth', 'cursor',
         'disabledforeground', 'font', 'foreground',
         'postcommand', 'relief', 'selectcolor', 'takefocus',
@@ -1390,6 +1399,8 @@ def test_indexcommand_none(self):
         i = widget.index('none')
         self.assertIsNone(i)
 
+    test_configure_activerelief = requires_tk(8, 7)(StandardOptionsTests.test_configure_activerelief)
+
     def test_configure_postcommand(self):
         widget = self.create()
         self.checkCommandParam(widget, 'postcommand')
@@ -1408,14 +1419,10 @@ def test_configure_title(self):
 
     def test_configure_type(self):
         widget = self.create()
-        opts = ('normal, tearoff, or menubar'
-                if widget.info_patchlevel() < (8, 7) else
-                'menubar, normal, or tearoff')
-        self.checkEnumParam(
-            widget, 'type',
-            'normal', 'tearoff', 'menubar',
-            errmsg='bad type "{}": must be ' + opts,
-            )
+        values = ('normal', 'tearoff', 'menubar')
+        self.checkEnumParam(widget, 'type', *values,
+                            allow_empty=tk_version < (8, 7),
+                            sort=tk_version >= (8, 7))
 
     def test_entryconfigure(self):
         m1 = self.create()
@@ -1461,6 +1468,10 @@ class MessageTest(AbstractWidgetTest, unittest.TestCase):
         'takefocus', 'text', 'textvariable', 'width',
     )
     _conv_pad_pixels = False
+    if tk_version >= (8, 7):
+        _conv_pixels = False
+    _clip_pad = tk_version >= (8, 7)
+    _clip_borderwidth = tk_version >= (8, 7)
 
     def create(self, **kwargs):
         return tkinter.Message(self.root, **kwargs)
@@ -1469,6 +1480,26 @@ def test_configure_aspect(self):
         widget = self.create()
         self.checkIntegerParam(widget, 'aspect', 250, 0, -300)
 
+    def test_configure_padx(self):
+        widget = self.create()
+        self.checkPixelsParam(widget, 'padx', 3, 4.4, 5.6, '12m',
+                              conv=self._conv_pad_pixels)
+        expected = self._default_pixels if self._clip_pad else -2
+        self.checkParam(widget, 'padx', -2, expected=expected)
+
+    def test_configure_pady(self):
+        widget = self.create()
+        self.checkPixelsParam(widget, 'pady', 3, 4.4, 5.6, '12m',
+                              conv=self._conv_pad_pixels)
+        expected = self._default_pixels if self._clip_pad else -2
+        self.checkParam(widget, 'pady', -2, expected=expected)
+
+    def test_configure_width(self):
+        widget = self.create()
+        self.checkPixelsParam(widget, 'width', 402, 403.4, 404.6, 0, '5i')
+        expected = 0 if tk_version >= (8, 7) else -402
+        self.checkParam(widget, 'width', -402, expected=expected)
+
 
 class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase):
 
diff --git a/Lib/test/test_tkinter/widget_tests.py b/Lib/test/test_tkinter/widget_tests.py
index 31f82f459beefd..8ab2f74245095d 100644
--- a/Lib/test/test_tkinter/widget_tests.py
+++ b/Lib/test/test_tkinter/widget_tests.py
@@ -1,7 +1,8 @@
 # Common tests for test_tkinter/test_widgets.py and test_ttk/test_widgets.py
 
+import re
 import tkinter
-from test.test_tkinter.support import (AbstractTkTest, tk_version,
+from test.test_tkinter.support import (AbstractTkTest, requires_tk, tk_version,
                                   pixels_conv, tcl_obj_eq)
 import test.support
 
@@ -9,9 +10,14 @@
 _sentinel = object()
 
 class AbstractWidgetTest(AbstractTkTest):
+    _default_pixels = '' if tk_version >= (9, 0) else -1 if tk_version >= (8, 7) else ''
     _conv_pixels = round
     _conv_pad_pixels = None
     _stringify = False
+    _clip_highlightthickness = True
+    _clip_pad = False
+    _clip_borderwidth = False
+    _allow_empty_justify = False
 
     @property
     def scaling(self):
@@ -56,16 +62,13 @@ def checkParam(self, widget, name, value, *, expected=_sentinel,
     def checkInvalidParam(self, widget, name, value, errmsg=None):
         orig = widget[name]
         if errmsg is not None:
-            errmsg = errmsg.format(value)
-        with self.assertRaises(tkinter.TclError) as cm:
+            errmsg = errmsg.format(re.escape(str(value)))
+            errmsg = fr'\A{errmsg}\Z'
+        with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):
             widget[name] = value
-        if errmsg is not None:
-            self.assertEqual(str(cm.exception), errmsg)
         self.assertEqual(widget[name], orig)
-        with self.assertRaises(tkinter.TclError) as cm:
+        with self.assertRaisesRegex(tkinter.TclError, errmsg or ''):
             widget.configure({name: value})
-        if errmsg is not None:
-            self.assertEqual(str(cm.exception), errmsg)
         self.assertEqual(widget[name], orig)
 
     def checkParams(self, widget, name, *values, **kwargs):
@@ -74,30 +77,26 @@ def checkParams(self, widget, name, *values, **kwargs):
 
     def checkIntegerParam(self, widget, name, *values, **kwargs):
         self.checkParams(widget, name, *values, **kwargs)
-        self.checkInvalidParam(widget, name, '',
-                errmsg='expected integer but got ""')
-        self.checkInvalidParam(widget, name, '10p',
-                errmsg='expected integer but got "10p"')
-        self.checkInvalidParam(widget, name, 3.2,
-                errmsg='expected integer but got "3.2"')
+        errmsg = 'expected integer but got "{}"'
+        self.checkInvalidParam(widget, name, '', errmsg=errmsg)
+        self.checkInvalidParam(widget, name, '10p', errmsg=errmsg)
+        self.checkInvalidParam(widget, name, 3.2, errmsg=errmsg)
 
     def checkFloatParam(self, widget, name, *values, conv=float, **kwargs):
         for value in values:
             self.checkParam(widget, name, value, conv=conv, **kwargs)
-        self.checkInvalidParam(widget, name, '',
-                errmsg='expected floating-point number but got ""')
-        self.checkInvalidParam(widget, name, 'spam',
-                errmsg='expected floating-point number but got "spam"')
+        errmsg = 'expected floating-point number but got "{}"'
+        self.checkInvalidParam(widget, name, '', errmsg=errmsg)
+        self.checkInvalidParam(widget, name, 'spam', errmsg=errmsg)
 
     def checkBooleanParam(self, widget, name):
         for value in (False, 0, 'false', 'no', 'off'):
             self.checkParam(widget, name, value, expected=0)
         for value in (True, 1, 'true', 'yes', 'on'):
             self.checkParam(widget, name, value, expected=1)
-        self.checkInvalidParam(widget, name, '',
-                errmsg='expected boolean value but got ""')
-        self.checkInvalidParam(widget, name, 'spam',
-                errmsg='expected boolean value but got "spam"')
+        errmsg = 'expected boolean value but got "{}"'
+        self.checkInvalidParam(widget, name, '', errmsg=errmsg)
+        self.checkInvalidParam(widget, name, 'spam', errmsg=errmsg)
 
     def checkColorParam(self, widget, name, *, allow_empty=None, **kwargs):
         self.checkParams(widget, name,
@@ -120,16 +119,24 @@ def command(*args):
         self.assertTrue(widget[name])
         self.checkParams(widget, name, '')
 
-    def checkEnumParam(self, widget, name, *values, errmsg=None, **kwargs):
+    def checkEnumParam(self, widget, name, *values,
+                       errmsg=None, allow_empty=False, fullname=None,
+                       sort=False, **kwargs):
         self.checkParams(widget, name, *values, **kwargs)
         if errmsg is None:
+            if sort:
+                if values[-1]:
+                    values = tuple(sorted(values))
+                else:
+                    values = tuple(sorted(values[:-1])) + ('',)
             errmsg2 = ' %s "{}": must be %s%s or %s' % (
-                    name,
+                    fullname or name,
                     ', '.join(values[:-1]),
                     ',' if len(values) > 2 else '',
-                    values[-1])
-            self.checkInvalidParam(widget, name, '',
-                                   errmsg='ambiguous' + errmsg2)
+                    values[-1] or '""')
+            if '' not in values and not allow_empty:
+                self.checkInvalidParam(widget, name, '',
+                                       errmsg='ambiguous' + errmsg2)
             errmsg = 'bad' + errmsg2
         self.checkInvalidParam(widget, name, 'spam', errmsg=errmsg)
 
@@ -146,20 +153,21 @@ def checkPixelsParam(self, widget, name, *values,
                     conv1 = round
             self.checkParam(widget, name, value, expected=expected,
                             conv=conv1, **kwargs)
-        self.checkInvalidParam(widget, name, '6x',
-                errmsg='bad screen distance "6x"')
-        self.checkInvalidParam(widget, name, 'spam',
-                errmsg='bad screen distance "spam"')
+        errmsg = '(bad|expected) screen distance ((or "" )?but got )?"{}"'
+        self.checkInvalidParam(widget, name, '6x', errmsg=errmsg)
+        self.checkInvalidParam(widget, name, 'spam', errmsg=errmsg)
 
-    def checkReliefParam(self, widget, name):
-        self.checkParams(widget, name,
-                         'flat', 'groove', 'raised', 'ridge', 'solid', 'sunken')
-        errmsg='bad relief "spam": must be '\
-               'flat, groove, raised, ridge, solid, or sunken'
+    def checkReliefParam(self, widget, name, *, allow_empty=False):
+        values = ('flat', 'groove', 'raised', 'ridge', 'solid', 'sunken')
+        if allow_empty:
+            values += ('',)
+        self.checkParams(widget, name, *values)
+        errmsg = 'bad relief "{}": must be %s, or %s' % (
+                ', '.join(values[:-1]),
+                values[-1] or '""')
         if tk_version < (8, 6):
             errmsg = None
-        self.checkInvalidParam(widget, name, 'spam',
-                errmsg=errmsg)
+        self.checkInvalidParam(widget, name, 'spam', errmsg=errmsg)
 
     def checkImageParam(self, widget, name):
         image = tkinter.PhotoImage(master=self.root, name='image1')
@@ -193,6 +201,7 @@ def test_keys(self):
             aliases = {
                 'bd': 'borderwidth',
                 'bg': 'background',
+                'bgimg': 'backgroundimage',
                 'fg': 'foreground',
                 'invcmd': 'invalidcommand',
                 'vcmd': 'validatecommand',
@@ -235,6 +244,10 @@ def test_configure_activeforeground(self):
         widget = self.create()
         self.checkColorParam(widget, 'activeforeground')
 
+    def test_configure_activerelief(self):
+        widget = self.create()
+        self.checkReliefParam(widget, 'activerelief')
+
     def test_configure_anchor(self):
         widget = self.create()
         self.checkEnumParam(widget, 'anchor',
@@ -246,6 +259,11 @@ def test_configure_background(self):
         if 'bg' in self.OPTIONS:
             self.checkColorParam(widget, 'bg')
 
+    @requires_tk(8, 7)
+    def test_configure_backgroundimage(self):
+        widget = self.create()
+        self.checkImageParam(widget, 'backgroundimage')
+
     def test_configure_bitmap(self):
         widget = self.create()
         self.checkParam(widget, 'bitmap', 'questhead')
@@ -262,9 +280,14 @@ def test_configure_bitmap(self):
     def test_configure_borderwidth(self):
         widget = self.create()
         self.checkPixelsParam(widget, 'borderwidth',
-                              0, 1.3, 2.6, 6, -2, '10p')
+                              0, 1.3, 2.6, 6, '10p')
+        expected = 0 if self._clip_borderwidth else -2
+        self.checkParam(widget, 'borderwidth', -2, expected=expected,
+                        conv=self._conv_pixels)
         if 'bd' in self.OPTIONS:
-            self.checkPixelsParam(widget, 'bd', 0, 1.3, 2.6, 6, -2, '10p')
+            self.checkPixelsParam(widget, 'bd', 0, 1.3, 2.6, 6, '10p')
+            self.checkParam(widget, 'bd', -2, expected=expected,
+                            conv=self._conv_pixels)
 
     def test_configure_compound(self):
         widget = self.create()
@@ -287,8 +310,10 @@ def test_configure_font(self):
         widget = self.create()
         self.checkParam(widget, 'font',
                         '-Adobe-Helvetica-Medium-R-Normal--*-120-*-*-*-*-*-*')
-        self.checkInvalidParam(widget, 'font', '',
-                               errmsg='font "" doesn\'t exist')
+        is_ttk = widget.__class__.__module__ == 'tkinter.ttk'
+        if not is_ttk:
+            self.checkInvalidParam(widget, 'font', '',
+                                   errmsg='font "" doesn\'t exist')
 
     def test_configure_foreground(self):
         widget = self.create()
@@ -308,7 +333,8 @@ def test_configure_highlightthickness(self):
         widget = self.create()
         self.checkPixelsParam(widget, 'highlightthickness',
                               0, 1.3, 2.6, 6, '10p')
-        self.checkParam(widget, 'highlightthickness', -2, expected=0,
+        expected = 0 if self._clip_highlightthickness else -2
+        self.checkParam(widget, 'highlightthickness', -2, expected=expected,
                         conv=self._conv_pixels)
 
     def test_configure_image(self):
@@ -342,12 +368,11 @@ def test_configure_jump(self):
 
     def test_configure_justify(self):
         widget = self.create()
-        self.checkEnumParam(widget, 'justify', 'left', 'right', 'center',
-                errmsg='bad justification "{}": must be '
-                       'left, right, or center')
-        self.checkInvalidParam(widget, 'justify', '',
-                errmsg='ambiguous justification "": must be '
-                       'left, right, or center')
+        values = ('left', 'right', 'center')
+        if self._allow_empty_justify:
+            values += ('',)
+        self.checkEnumParam(widget, 'justify', *values,
+                            fullname='justification')
 
     def test_configure_orient(self):
         widget = self.create()
@@ -356,13 +381,29 @@ def test_configure_orient(self):
 
     def test_configure_padx(self):
         widget = self.create()
-        self.checkPixelsParam(widget, 'padx', 3, 4.4, 5.6, -2, '12m',
+        self.checkPixelsParam(widget, 'padx', 3, 4.4, 5.6, '12m',
                               conv=self._conv_pad_pixels)
+        expected = 0 if self._clip_pad else -2
+        self.checkParam(widget, 'padx', -2, expected=expected,
+                        conv=self._conv_pad_pixels)
 
     def test_configure_pady(self):
         widget = self.create()
-        self.checkPixelsParam(widget, 'pady', 3, 4.4, 5.6, -2, '12m',
+        self.checkPixelsParam(widget, 'pady', 3, 4.4, 5.6, '12m',
                               conv=self._conv_pad_pixels)
+        expected = 0 if self._clip_pad else -2
+        self.checkParam(widget, 'pady', -2, expected=expected,
+                        conv=self._conv_pad_pixels)
+
+    @requires_tk(8, 7)
+    def test_configure_placeholder(self):
+        widget = self.create()
+        self.checkParam(widget, 'placeholder', 'xxx')
+
+    @requires_tk(8, 7)
+    def test_configure_placeholderforeground(self):
+        widget = self.create()
+        self.checkColorParam(widget, 'placeholderforeground')
 
     def test_configure_relief(self):
         widget = self.create()
@@ -409,13 +450,35 @@ def test_configure_textvariable(self):
         var = tkinter.StringVar(self.root)
         self.checkVariableParam(widget, 'textvariable', var)
 
+    @requires_tk(8, 7)
+    def test_configure_tile(self):
+        widget = self.create()
+        self.checkBooleanParam(widget, 'tile')
+
     def test_configure_troughcolor(self):
         widget = self.create()
         self.checkColorParam(widget, 'troughcolor')
 
     def test_configure_underline(self):
         widget = self.create()
-        self.checkIntegerParam(widget, 'underline', 0, 1, 10)
+        self.checkParams(widget, 'underline', 0, 1, 10)
+        if tk_version >= (8, 7):
+            is_ttk = widget.__class__.__module__ == 'tkinter.ttk'
+            self.checkParam(widget, 'underline', '',
+                            expected='' if is_ttk else self._default_pixels)
+            self.checkParam(widget, 'underline', '5+2',
+                            expected='5+2' if is_ttk else 7)
+            self.checkParam(widget, 'underline', '5-2',
+                            expected='5-2' if is_ttk else 3)
+            self.checkParam(widget, 'underline', 'end', expected='end')
+            self.checkParam(widget, 'underline', 'end-2', expected='end-2')
+            errmsg = (r'bad index "{}": must be integer\?\[\+-\]integer\?, '
+                      r'end\?\[\+-\]integer\?, or ""')
+        else:
+            errmsg = 'expected integer but got "{}"'
+            self.checkInvalidParam(widget, 'underline', '', errmsg=errmsg)
+        self.checkInvalidParam(widget, 'underline', '10p', errmsg=errmsg)
+        self.checkInvalidParam(widget, 'underline', 3.2, errmsg=errmsg)
 
     def test_configure_wraplength(self):
         widget = self.create()
@@ -445,7 +508,8 @@ def test_configure_offrelief(self):
 
     def test_configure_overrelief(self):
         widget = self.create()
-        self.checkReliefParam(widget, 'overrelief')
+        self.checkReliefParam(widget, 'overrelief',
+                              allow_empty=(tk_version >= (8, 7)))
 
     def test_configure_selectcolor(self):
         widget = self.create()
diff --git a/Lib/test/test_tokenize.py b/Lib/test/test_tokenize.py
index 4428e8cea1964c..480bff743a9f8a 100644
--- a/Lib/test/test_tokenize.py
+++ b/Lib/test/test_tokenize.py
@@ -1,4 +1,5 @@
 import os
+import re
 import token
 import tokenize
 import unittest
@@ -228,7 +229,7 @@ def test_long(self):
     """)
 
     def test_float(self):
-        # Floating point numbers
+        # Floating-point numbers
         self.check_tokenize("x = 3.14159", """\
     NAME       'x'           (1, 0) (1, 1)
     OP         '='           (1, 2) (1, 3)
@@ -1199,6 +1200,31 @@ def test_closing_parenthesis_from_different_line(self):
     NAME       'x'           (1, 3) (1, 4)
     """)
 
+    def test_multiline_non_ascii_fstring(self):
+        self.check_tokenize("""\
+a = f'''
+    Autorzy, którzy tą jednostkę mają wpisani jako AKTUALNA -- czyli'''""", """\
+    NAME       'a'           (1, 0) (1, 1)
+    OP         '='           (1, 2) (1, 3)
+    FSTRING_START "f\'\'\'"        (1, 4) (1, 8)
+    FSTRING_MIDDLE '\\n    Autorzy, którzy tą jednostkę mają wpisani jako AKTUALNA -- czyli' (1, 8) (2, 68)
+    FSTRING_END "\'\'\'"         (2, 68) (2, 71)
+    """)
+
+    def test_multiline_non_ascii_fstring_with_expr(self):
+        self.check_tokenize("""\
+f'''
+    🔗 This is a test {test_arg1}🔗
+🔗'''""", """\
+    FSTRING_START "f\'\'\'"        (1, 0) (1, 4)
+    FSTRING_MIDDLE '\\n    🔗 This is a test ' (1, 4) (2, 21)
+    OP         '{'           (2, 21) (2, 22)
+    NAME       'test_arg1'   (2, 22) (2, 31)
+    OP         '}'           (2, 31) (2, 32)
+    FSTRING_MIDDLE '🔗\\n🔗'        (2, 32) (3, 1)
+    FSTRING_END "\'\'\'"         (3, 1) (3, 4)
+    """)
+
 class GenerateTokensTest(TokenizeTest):
     def check_tokenize(self, s, expected):
         # Format the tokens in s in a table format.
@@ -1794,6 +1820,22 @@ def test_iter_compat(self):
         self.assertEqual(tokenize.untokenize(iter(tokens)), b'Hello ')
 
 
+def contains_ambiguous_backslash(source):
+    """Return `True` if the source contains a backslash on a
+    line by itself. For example:
+
+    a = (1
+        \\
+    )
+
+    Code like this cannot be untokenized exactly. This is because
+    the tokenizer does not produce any tokens for the line containing
+    the backslash and so there is no way to know its indent.
+    """
+    pattern = re.compile(br'\n\s*\\\r?\n')
+    return pattern.search(source) is not None
+
+
 class TestRoundtrip(TestCase):
 
     def check_roundtrip(self, f):
@@ -1804,6 +1846,9 @@ def check_roundtrip(self, f):
         tokenize.untokenize(), and the latter tokenized again to 2-tuples.
         The test fails if the 3 pair tokenizations do not match.
 
+        If the source code can be untokenized unambiguously, the
+        untokenized code must match the original code exactly.
+
         When untokenize bugs are fixed, untokenize with 5-tuples should
         reproduce code that does not contain a backslash continuation
         following spaces.  A proper test should test this.
@@ -1827,6 +1872,13 @@ def check_roundtrip(self, f):
         tokens2_from5 = [tok[:2] for tok in tokenize.tokenize(readline5)]
         self.assertEqual(tokens2_from5, tokens2)
 
+        if not contains_ambiguous_backslash(code):
+            # The BOM does not produce a token so there is no way to preserve it.
+            code_without_bom = code.removeprefix(b'\xef\xbb\xbf')
+            readline = iter(code_without_bom.splitlines(keepends=True)).__next__
+            untokenized_code = tokenize.untokenize(tokenize.tokenize(readline))
+            self.assertEqual(code_without_bom, untokenized_code)
+
     def check_line_extraction(self, f):
         if isinstance(f, str):
             code = f.encode('utf-8')
@@ -1894,6 +1946,26 @@ def test_roundtrip(self):
         self.check_roundtrip(r"f'\\\\N{{'")
         self.check_roundtrip(r"f'\\\\\\N{{'")
         self.check_roundtrip(r"f'\\\\\\\\N{{'")
+
+        self.check_roundtrip(r"f'\n{{foo}}'")
+        self.check_roundtrip(r"f'\\n{{foo}}'")
+        self.check_roundtrip(r"f'\\\n{{foo}}'")
+        self.check_roundtrip(r"f'\\\\n{{foo}}'")
+
+        self.check_roundtrip(r"f'\t{{foo}}'")
+        self.check_roundtrip(r"f'\\t{{foo}}'")
+        self.check_roundtrip(r"f'\\\t{{foo}}'")
+        self.check_roundtrip(r"f'\\\\t{{foo}}'")
+
+        self.check_roundtrip(r"rf'\t{{foo}}'")
+        self.check_roundtrip(r"rf'\\t{{foo}}'")
+        self.check_roundtrip(r"rf'\\\t{{foo}}'")
+        self.check_roundtrip(r"rf'\\\\t{{foo}}'")
+
+        self.check_roundtrip(r"rf'\{{foo}}'")
+        self.check_roundtrip(r"f'\\{{foo}}'")
+        self.check_roundtrip(r"rf'\\\{{foo}}'")
+        self.check_roundtrip(r"f'\\\\{{foo}}'")
         cases = [
     """
 if 1:
diff --git a/Lib/test/test_tools/i18n_data/docstrings.pot b/Lib/test/test_tools/i18n_data/docstrings.pot
new file mode 100644
index 00000000000000..5af1d41422ff62
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/docstrings.pot
@@ -0,0 +1,40 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR ORGANIZATION
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"POT-Creation-Date: 2000-01-01 00:00+0000\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: pygettext.py 1.5\n"
+
+
+#: docstrings.py:7
+#, docstring
+msgid ""
+msgstr ""
+
+#: docstrings.py:18
+#, docstring
+msgid ""
+"multiline\n"
+"    docstring\n"
+"    "
+msgstr ""
+
+#: docstrings.py:25
+#, docstring
+msgid "docstring1"
+msgstr ""
+
+#: docstrings.py:30
+#, docstring
+msgid "Hello, {}!"
+msgstr ""
+
diff --git a/Lib/test/test_tools/i18n_data/docstrings.py b/Lib/test/test_tools/i18n_data/docstrings.py
new file mode 100644
index 00000000000000..85d7f159d37775
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/docstrings.py
@@ -0,0 +1,41 @@
+# Test docstring extraction
+from gettext import gettext as _
+
+
+# Empty docstring
+def test(x):
+    """"""
+
+
+# Leading empty line
+def test2(x):
+
+    """docstring"""  # XXX This should be extracted but isn't.
+
+
+# XXX Multiline docstrings should be cleaned with `inspect.cleandoc`.
+def test3(x):
+    """multiline
+    docstring
+    """
+
+
+# Multiple docstrings - only the first should be extracted
+def test4(x):
+    """docstring1"""
+    """docstring2"""
+
+
+def test5(x):
+    """Hello, {}!""".format("world!")  # XXX This should not be extracted.
+
+
+# Nested docstrings
+def test6(x):
+    def inner(y):
+        """nested docstring"""  # XXX This should be extracted but isn't.
+
+
+class Outer:
+    class Inner:
+        "nested class docstring"  # XXX This should be extracted but isn't.
diff --git a/Lib/test/test_tools/i18n_data/fileloc.pot b/Lib/test/test_tools/i18n_data/fileloc.pot
new file mode 100644
index 00000000000000..dbd28687a73556
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/fileloc.pot
@@ -0,0 +1,35 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR ORGANIZATION
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"POT-Creation-Date: 2000-01-01 00:00+0000\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: pygettext.py 1.5\n"
+
+
+#: fileloc.py:5 fileloc.py:6
+msgid "foo"
+msgstr ""
+
+#: fileloc.py:9
+msgid "bar"
+msgstr ""
+
+#: fileloc.py:14 fileloc.py:18
+#, docstring
+msgid "docstring"
+msgstr ""
+
+#: fileloc.py:22 fileloc.py:26
+#, docstring
+msgid "baz"
+msgstr ""
+
diff --git a/Lib/test/test_tools/i18n_data/fileloc.py b/Lib/test/test_tools/i18n_data/fileloc.py
new file mode 100644
index 00000000000000..c5d4d0595fea52
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/fileloc.py
@@ -0,0 +1,26 @@
+# Test file locations
+from gettext import gettext as _
+
+# Duplicate strings
+_('foo')
+_('foo')
+
+# Duplicate strings on the same line should only add one location to the output
+_('bar'), _('bar')
+
+
+# Duplicate docstrings
+class A:
+    """docstring"""
+
+
+def f():
+    """docstring"""
+
+
+# Duplicate message and docstring
+_('baz')
+
+
+def g():
+    """baz"""
diff --git a/Lib/test/test_tools/i18n_data/messages.pot b/Lib/test/test_tools/i18n_data/messages.pot
new file mode 100644
index 00000000000000..ddfbd18349ef4f
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/messages.pot
@@ -0,0 +1,67 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR ORGANIZATION
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"POT-Creation-Date: 2000-01-01 00:00+0000\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: pygettext.py 1.5\n"
+
+
+#: messages.py:5
+msgid ""
+msgstr ""
+
+#: messages.py:8 messages.py:9
+msgid "parentheses"
+msgstr ""
+
+#: messages.py:12
+msgid "Hello, world!"
+msgstr ""
+
+#: messages.py:15
+msgid ""
+"Hello,\n"
+"    multiline!\n"
+msgstr ""
+
+#: messages.py:29
+msgid "Hello, {}!"
+msgstr ""
+
+#: messages.py:33
+msgid "1"
+msgstr ""
+
+#: messages.py:33
+msgid "2"
+msgstr ""
+
+#: messages.py:34 messages.py:35
+msgid "A"
+msgstr ""
+
+#: messages.py:34 messages.py:35
+msgid "B"
+msgstr ""
+
+#: messages.py:36
+msgid "set"
+msgstr ""
+
+#: messages.py:42
+msgid "nested string"
+msgstr ""
+
+#: messages.py:47
+msgid "baz"
+msgstr ""
+
diff --git a/Lib/test/test_tools/i18n_data/messages.py b/Lib/test/test_tools/i18n_data/messages.py
new file mode 100644
index 00000000000000..f220294b8d5c67
--- /dev/null
+++ b/Lib/test/test_tools/i18n_data/messages.py
@@ -0,0 +1,64 @@
+# Test message extraction
+from gettext import gettext as _
+
+# Empty string
+_("")
+
+# Extra parentheses
+(_("parentheses"))
+((_("parentheses")))
+
+# Multiline strings
+_("Hello, "
+  "world!")
+
+_("""Hello,
+    multiline!
+""")
+
+# Invalid arguments
+_()
+_(None)
+_(1)
+_(False)
+_(x="kwargs are not allowed")
+_("foo", "bar")
+_("something", x="something else")
+
+# .format()
+_("Hello, {}!").format("world")  # valid
+_("Hello, {}!".format("world"))  # invalid
+
+# Nested structures
+_("1"), _("2")
+arr = [_("A"), _("B")]
+obj = {'a': _("A"), 'b': _("B")}
+{{{_('set')}}}
+
+
+# Nested functions and classes
+def test():
+    _("nested string")  # XXX This should be extracted but isn't.
+    [_("nested string")]
+
+
+class Foo:
+    def bar(self):
+        return _("baz")
+
+
+def bar(x=_('default value')):  # XXX This should be extracted but isn't.
+    pass
+
+
+def baz(x=[_('default value')]):  # XXX This should be extracted but isn't.
+    pass
+
+
+# Shadowing _()
+def _(x):
+    pass
+
+
+def _(x="don't extract me"):
+    pass
diff --git a/Lib/test/test_tools/test_i18n.py b/Lib/test/test_tools/test_i18n.py
index c083a04475e726..6f71f0976819f1 100644
--- a/Lib/test/test_tools/test_i18n.py
+++ b/Lib/test/test_tools/test_i18n.py
@@ -1,9 +1,11 @@
 """Tests to cover the Tools/i18n package"""
 
 import os
+import re
 import sys
 import unittest
 from textwrap import dedent
+from pathlib import Path
 
 from test.support.script_helper import assert_python_ok
 from test.test_tools import skip_if_missing, toolsdir
@@ -12,20 +14,47 @@
 
 skip_if_missing()
 
+DATA_DIR = Path(__file__).resolve().parent / 'i18n_data'
+
+
+def normalize_POT_file(pot):
+    """Normalize the POT creation timestamp, charset and
+    file locations to make the POT file easier to compare.
+
+    """
+    # Normalize the creation date.
+    date_pattern = re.compile(r'"POT-Creation-Date: .+?\\n"')
+    header = r'"POT-Creation-Date: 2000-01-01 00:00+0000\\n"'
+    pot = re.sub(date_pattern, header, pot)
+
+    # Normalize charset to UTF-8 (currently there's no way to specify the output charset).
+    charset_pattern = re.compile(r'"Content-Type: text/plain; charset=.+?\\n"')
+    charset = r'"Content-Type: text/plain; charset=UTF-8\\n"'
+    pot = re.sub(charset_pattern, charset, pot)
+
+    # Normalize file location path separators in case this test is
+    # running on Windows (which uses '\').
+    fileloc_pattern = re.compile(r'#:.+')
+
+    def replace(match):
+        return match[0].replace(os.sep, "/")
+    pot = re.sub(fileloc_pattern, replace, pot)
+    return pot
+
 
 class Test_pygettext(unittest.TestCase):
     """Tests for the pygettext.py tool"""
 
-    script = os.path.join(toolsdir,'i18n', 'pygettext.py')
+    script = Path(toolsdir, 'i18n', 'pygettext.py')
 
     def get_header(self, data):
         """ utility: return the header of a .po file as a dictionary """
         headers = {}
         for line in data.split('\n'):
-            if not line or line.startswith(('#', 'msgid','msgstr')):
+            if not line or line.startswith(('#', 'msgid', 'msgstr')):
                 continue
             line = line.strip('"')
-            key, val = line.split(':',1)
+            key, val = line.split(':', 1)
             headers[key] = val.strip()
         return headers
 
@@ -53,23 +82,34 @@ def get_msgids(self, data):
 
         return msgids
 
-    def extract_docstrings_from_str(self, module_content):
-        """ utility: return all msgids extracted from module_content """
-        filename = 'test_docstrings.py'
-        with temp_cwd(None) as cwd:
+    def assert_POT_equal(self, expected, actual):
+        """Check if two POT files are equal"""
+        self.maxDiff = None
+        self.assertEqual(normalize_POT_file(expected), normalize_POT_file(actual))
+
+    def extract_from_str(self, module_content, *, args=(), strict=True):
+        """Return all msgids extracted from module_content."""
+        filename = 'test.py'
+        with temp_cwd(None):
             with open(filename, 'w', encoding='utf-8') as fp:
                 fp.write(module_content)
-            assert_python_ok(self.script, '-D', filename)
+            res = assert_python_ok('-Xutf8', self.script, *args, filename)
+            if strict:
+                self.assertEqual(res.err, b'')
             with open('messages.pot', encoding='utf-8') as fp:
                 data = fp.read()
         return self.get_msgids(data)
 
+    def extract_docstrings_from_str(self, module_content):
+        """Return all docstrings extracted from module_content."""
+        return self.extract_from_str(module_content, args=('--docstrings',), strict=False)
+
     def test_header(self):
         """Make sure the required fields are in the header, according to:
            http://www.gnu.org/software/gettext/manual/gettext.html#Header-Entry
         """
         with temp_cwd(None) as cwd:
-            assert_python_ok(self.script)
+            assert_python_ok('-Xutf8', self.script)
             with open('messages.pot', encoding='utf-8') as fp:
                 data = fp.read()
             header = self.get_header(data)
@@ -96,7 +136,7 @@ def test_POT_Creation_Date(self):
         """ Match the date format from xgettext for POT-Creation-Date """
         from datetime import datetime
         with temp_cwd(None) as cwd:
-            assert_python_ok(self.script)
+            assert_python_ok('-Xutf8', self.script)
             with open('messages.pot', encoding='utf-8') as fp:
                 data = fp.read()
             header = self.get_header(data)
@@ -310,6 +350,37 @@ def test_calls_in_fstring_with_partially_wrong_expression(self):
         self.assertNotIn('foo', msgids)
         self.assertIn('bar', msgids)
 
+    def test_function_and_class_names(self):
+        """Test that function and class names are not mistakenly extracted."""
+        msgids = self.extract_from_str(dedent('''\
+        def _(x):
+            pass
+
+        def _(x="foo"):
+            pass
+
+        async def _(x):
+            pass
+
+        class _(object):
+            pass
+        '''))
+        self.assertEqual(msgids, [''])
+
+    def test_pygettext_output(self):
+        """Test that the pygettext output exactly matches snapshots."""
+        for input_file in DATA_DIR.glob('*.py'):
+            output_file = input_file.with_suffix('.pot')
+            with self.subTest(input_file=f'i18n_data/{input_file}'):
+                contents = input_file.read_text(encoding='utf-8')
+                with temp_cwd(None):
+                    Path(input_file.name).write_text(contents)
+                    assert_python_ok('-Xutf8', self.script, '--docstrings', input_file.name)
+                    output = Path('messages.pot').read_text(encoding='utf-8')
+
+                expected = output_file.read_text(encoding='utf-8')
+                self.assert_POT_equal(expected, output)
+
     def test_files_list(self):
         """Make sure the directories are inspected for source files
            bpo-31920
@@ -318,21 +389,41 @@ def test_files_list(self):
         text2 = 'Text to translate2'
         text3 = 'Text to ignore'
         with temp_cwd(None), temp_dir(None) as sdir:
-            os.mkdir(os.path.join(sdir, 'pypkg'))
-            with open(os.path.join(sdir, 'pypkg', 'pymod.py'), 'w',
-                      encoding='utf-8') as sfile:
-                sfile.write(f'_({text1!r})')
-            os.mkdir(os.path.join(sdir, 'pkg.py'))
-            with open(os.path.join(sdir, 'pkg.py', 'pymod2.py'), 'w',
-                      encoding='utf-8') as sfile:
-                sfile.write(f'_({text2!r})')
-            os.mkdir(os.path.join(sdir, 'CVS'))
-            with open(os.path.join(sdir, 'CVS', 'pymod3.py'), 'w',
-                      encoding='utf-8') as sfile:
-                sfile.write(f'_({text3!r})')
-            assert_python_ok(self.script, sdir)
-            with open('messages.pot', encoding='utf-8') as fp:
-                data = fp.read()
+            pymod = Path(sdir, 'pypkg', 'pymod.py')
+            pymod.parent.mkdir()
+            pymod.write_text(f'_({text1!r})', encoding='utf-8')
+
+            pymod2 = Path(sdir, 'pkg.py', 'pymod2.py')
+            pymod2.parent.mkdir()
+            pymod2.write_text(f'_({text2!r})', encoding='utf-8')
+
+            pymod3 = Path(sdir, 'CVS', 'pymod3.py')
+            pymod3.parent.mkdir()
+            pymod3.write_text(f'_({text3!r})', encoding='utf-8')
+
+            assert_python_ok('-Xutf8', self.script, sdir)
+            data = Path('messages.pot').read_text(encoding='utf-8')
             self.assertIn(f'msgid "{text1}"', data)
             self.assertIn(f'msgid "{text2}"', data)
             self.assertNotIn(text3, data)
+
+
+def update_POT_snapshots():
+    for input_file in DATA_DIR.glob('*.py'):
+        output_file = input_file.with_suffix('.pot')
+        contents = input_file.read_bytes()
+        with temp_cwd(None):
+            Path(input_file.name).write_bytes(contents)
+            assert_python_ok('-Xutf8', Test_pygettext.script, '--docstrings', input_file.name)
+            output = Path('messages.pot').read_text(encoding='utf-8')
+
+        output = normalize_POT_file(output)
+        output_file.write_text(output, encoding='utf-8')
+
+
+if __name__ == '__main__':
+    # To regenerate POT files
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_POT_snapshots()
+        sys.exit(0)
+    unittest.main()
diff --git a/Lib/test/test_tools/test_makefile.py b/Lib/test/test_tools/test_makefile.py
index 48a7c1a773bb83..4c7588d4d93fc3 100644
--- a/Lib/test/test_tools/test_makefile.py
+++ b/Lib/test/test_tools/test_makefile.py
@@ -41,7 +41,7 @@ def test_makefile_test_folders(self):
         idle_test = 'idlelib/idle_test'
         self.assertIn(idle_test, test_dirs)
 
-        used = [idle_test]
+        used = set([idle_test])
         for dirpath, dirs, files in os.walk(support.TEST_HOME_DIR):
             dirname = os.path.basename(dirpath)
             # Skip temporary dirs:
@@ -52,7 +52,10 @@ def test_makefile_test_folders(self):
             if not dirs and not files:
                 continue
             # Skip dirs with hidden-only files:
-            if files and all(filename.startswith('.') for filename in files):
+            if files and all(
+                filename.startswith('.') or filename == '__pycache__'
+                for filename in files
+            ):
                 continue
 
             relpath = os.path.relpath(dirpath, support.STDLIB_DIR)
@@ -65,13 +68,14 @@ def test_makefile_test_folders(self):
                         "of test directories to install"
                     )
                 )
-                used.append(relpath)
+                used.add(relpath)
 
         # Don't check the wheel dir when Python is built --with-wheel-pkg-dir
         if sysconfig.get_config_var('WHEEL_PKG_DIR'):
             test_dirs.remove('test/wheeldata')
+            used.discard('test/wheeldata')
 
         # Check that there are no extra entries:
         unique_test_dirs = set(test_dirs)
-        self.assertSetEqual(unique_test_dirs, set(used))
+        self.assertSetEqual(unique_test_dirs, used)
         self.assertEqual(len(test_dirs), len(unique_test_dirs))
diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index c1e289bcaff9e5..7ff3fe4091dfa4 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -1,11 +1,12 @@
 import os
 from pickle import dump
 import sys
-from test.support import captured_stdout, requires_resource
+from test.support import captured_stdout, requires_resource, requires_gil_enabled
 from test.support.os_helper import (TESTFN, rmtree, unlink)
 from test.support.script_helper import assert_python_ok, assert_python_failure
 import textwrap
 import unittest
+from types import FunctionType
 
 import trace
 from trace import Trace
@@ -300,6 +301,7 @@ def test_loop_caller_importing(self):
 
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'pre-existing trace function throws off measurements')
+    @requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
     def test_inst_method_calling(self):
         obj = TracedClass(20)
         self.tracer.runfunc(obj.inst_method_calling, 1)
@@ -333,6 +335,7 @@ def setUp(self):
 
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'pre-existing trace function throws off measurements')
+    @requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
     def test_loop_caller_importing(self):
         self.tracer.runfunc(traced_func_importing_caller, 1)
 
@@ -559,5 +562,29 @@ def test_run_as_module(self):
         assert_python_failure('-m', 'trace', '-l', '--module', 'not_a_module_zzz')
 
 
+class TestTrace(unittest.TestCase):
+    def setUp(self):
+        self.addCleanup(sys.settrace, sys.gettrace())
+        self.tracer = Trace(count=0, trace=1)
+        self.filemod = my_file_and_modname()
+
+    def test_no_source_file(self):
+        filename = "<unknown>"
+        co = traced_func_linear.__code__
+        co = co.replace(co_filename=filename)
+        f = FunctionType(co, globals())
+
+        with captured_stdout() as out:
+            self.tracer.runfunc(f, 2, 3)
+
+        out = out.getvalue().splitlines()
+        firstlineno = get_firstlineno(f)
+        self.assertIn(f" --- modulename: {self.filemod[1]}, funcname: {f.__code__.co_name}", out[0])
+        self.assertIn(f"{filename}({firstlineno + 1})", out[1])
+        self.assertIn(f"{filename}({firstlineno + 2})", out[2])
+        self.assertIn(f"{filename}({firstlineno + 3})", out[3])
+        self.assertIn(f"{filename}({firstlineno + 4})", out[4])
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 5987ec382e6c85..f89fe8b26dc1bf 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -21,7 +21,7 @@
 from test.support.os_helper import TESTFN, unlink
 from test.support.script_helper import assert_python_ok, assert_python_failure
 from test.support.import_helper import forget
-from test.support import force_not_colorized
+from test.support import force_not_colorized, force_not_colorized_test_class
 
 import json
 import textwrap
@@ -150,7 +150,7 @@ def test_no_caret_with_no_debug_ranges_flag_python_traceback(self):
             import traceback
             try:
                 x = 1 / 0
-            except:
+            except ZeroDivisionError:
                 traceback.print_exc()
             """)
         try:
@@ -376,6 +376,30 @@ def f():
             '   ValueError: 0\n',
         ])
 
+    def test_format_exception_group_syntax_error_with_custom_values(self):
+        # See https://github.com/python/cpython/issues/128894
+        for exc in [
+            SyntaxError('error', 'abcd'),
+            SyntaxError('error', [None] * 4),
+            SyntaxError('error', (1, 2, 3, 4)),
+            SyntaxError('error', (1, 2, 3, 4)),
+            SyntaxError('error', (1, 'a', 'b', 2)),
+            # with end_lineno and end_offset:
+            SyntaxError('error', 'abcdef'),
+            SyntaxError('error', [None] * 6),
+            SyntaxError('error', (1, 2, 3, 4, 5, 6)),
+            SyntaxError('error', (1, 'a', 'b', 2, 'c', 'd')),
+        ]:
+            with self.subTest(exc=exc):
+                err = traceback.format_exception_only(exc, show_group=True)
+                # Should not raise an exception:
+                if exc.lineno is not None:
+                    self.assertEqual(len(err), 2)
+                    self.assertTrue(err[0].startswith('  File'))
+                else:
+                    self.assertEqual(len(err), 1)
+                self.assertEqual(err[-1], 'SyntaxError: error\n')
+
     @requires_subprocess()
     @force_not_colorized
     def test_encoded_file(self):
@@ -543,16 +567,17 @@ def test_signatures(self):
 
         self.assertEqual(
             str(inspect.signature(traceback.format_exception_only)),
-            '(exc, /, value=<implicit>, *, show_group=False)')
+            '(exc, /, value=<implicit>, *, show_group=False, **kwargs)')
 
 
 class PurePythonExceptionFormattingMixin:
     def get_exception(self, callable, slice_start=0, slice_end=-1):
         try:
             callable()
-            self.fail("No exception thrown.")
-        except:
+        except BaseException:
             return traceback.format_exc().splitlines()[slice_start:slice_end]
+        else:
+            self.fail("No exception thrown.")
 
     callable_line = get_exception.__code__.co_firstlineno + 2
 
@@ -696,6 +721,35 @@ def f_with_multiline():
         result_lines = self.get_exception(f_with_multiline)
         self.assertEqual(result_lines, expected_f.splitlines())
 
+        # Check custom error messages covering multiple lines
+        code = textwrap.dedent("""
+        dummy_call(
+            "dummy value"
+            foo="bar",
+        )
+        """)
+
+        def f_with_multiline():
+            # Need to defer the compilation until in self.get_exception(..)
+            return compile(code, "?", "exec")
+
+        lineno_f = f_with_multiline.__code__.co_firstlineno
+
+        expected_f = (
+            'Traceback (most recent call last):\n'
+            f'  File "{__file__}", line {self.callable_line}, in get_exception\n'
+            '    callable()\n'
+            '    ~~~~~~~~^^\n'
+            f'  File "{__file__}", line {lineno_f+2}, in f_with_multiline\n'
+            '    return compile(code, "?", "exec")\n'
+            '  File "?", line 3\n'
+            '    "dummy value"\n'
+            '    ^^^^^^^^^^^^^'
+            )
+
+        result_lines = self.get_exception(f_with_multiline)
+        self.assertEqual(result_lines, expected_f.splitlines())
+
     def test_caret_multiline_expression_bin_op(self):
         # Make sure no carets are printed for expressions spanning multiple
         # lines.
@@ -1679,6 +1733,7 @@ def f():
 
 
 @requires_debug_ranges()
+@force_not_colorized_test_class
 class PurePythonTracebackErrorCaretTests(
     PurePythonExceptionFormattingMixin,
     TracebackErrorLocationCaretTestBase,
@@ -1692,6 +1747,7 @@ class PurePythonTracebackErrorCaretTests(
 
 @cpython_only
 @requires_debug_ranges()
+@force_not_colorized_test_class
 class CPythonTracebackErrorCaretTests(
     CAPIExceptionFormattingMixin,
     TracebackErrorLocationCaretTestBase,
@@ -1703,6 +1759,7 @@ class CPythonTracebackErrorCaretTests(
 
 @cpython_only
 @requires_debug_ranges()
+@force_not_colorized_test_class
 class CPythonTracebackLegacyErrorCaretTests(
     CAPIExceptionFormattingLegacyMixin,
     TracebackErrorLocationCaretTestBase,
@@ -2114,10 +2171,12 @@ def test_print_exception_bad_type_python(self):
 boundaries = re.compile(
     '(%s|%s)' % (re.escape(cause_message), re.escape(context_message)))
 
+@force_not_colorized_test_class
 class TestTracebackFormat(unittest.TestCase, TracebackFormatMixin):
     pass
 
 @cpython_only
+@force_not_colorized_test_class
 class TestFallbackTracebackFormat(unittest.TestCase, TracebackFormatMixin):
     DEBUG_RANGES = False
     def setUp(self) -> None:
@@ -2205,7 +2264,7 @@ def test_context_suppression(self):
         try:
             try:
                 raise Exception
-            except:
+            except Exception:
                 raise ZeroDivisionError from None
         except ZeroDivisionError as _:
             e = _
@@ -2309,19 +2368,22 @@ def test_message_none(self):
     def test_syntax_error_various_offsets(self):
         for offset in range(-5, 10):
             for add in [0, 2]:
-                text = " "*add + "text%d" % offset
+                text = " " * add + "text%d" % offset
                 expected = ['  File "file.py", line 1']
                 if offset < 1:
                     expected.append("    %s" % text.lstrip())
                 elif offset <= 6:
                     expected.append("    %s" % text.lstrip())
-                    expected.append("    %s^" % (" "*(offset-1)))
+                    # Set the caret length to match the length of the text minus the offset.
+                    caret_length = max(1, len(text.lstrip()) - offset + 1)
+                    expected.append("    %s%s" % (" " * (offset - 1), "^" * caret_length))
                 else:
+                    caret_length = max(1, len(text.lstrip()) - 4)
                     expected.append("    %s" % text.lstrip())
-                    expected.append("    %s^" % (" "*5))
+                    expected.append("    %s%s" % (" " * 5, "^" * caret_length))
                 expected.append("SyntaxError: msg")
                 expected.append("")
-                err = self.get_report(SyntaxError("msg", ("file.py", 1, offset+add, text)))
+                err = self.get_report(SyntaxError("msg", ("file.py", 1, offset + add, text)))
                 exp = "\n".join(expected)
                 self.assertEqual(exp, err)
 
@@ -2554,9 +2616,9 @@ def exc():
             try:
                 try:
                     raise EG("eg1", [ValueError(1), TypeError(2)])
-                except:
+                except EG:
                     raise EG("eg2", [ValueError(3), TypeError(4)])
-            except:
+            except EG:
                 raise ImportError(5)
 
         expected = (
@@ -2606,7 +2668,7 @@ def exc():
                 except Exception as e:
                     exc = e
                 raise EG("eg", [VE(1), exc, VE(4)])
-            except:
+            except EG:
                 raise EG("top", [VE(5)])
 
         expected = (f'  + Exception Group Traceback (most recent call last):\n'
@@ -2876,6 +2938,33 @@ def exc():
         report = self.get_report(exc)
         self.assertEqual(report, expected)
 
+    def test_exception_group_wrapped_naked(self):
+        # See gh-128799
+
+        def exc():
+            try:
+                raise Exception(42)
+            except* Exception as e:
+                raise
+
+        expected = (f'  + Exception Group Traceback (most recent call last):\n'
+                    f'  |   File "{__file__}", line {self.callable_line}, in get_exception\n'
+                    f'  |     exception_or_callable()\n'
+                    f'  |     ~~~~~~~~~~~~~~~~~~~~~^^\n'
+                    f'  |   File "{__file__}", line {exc.__code__.co_firstlineno + 3}, in exc\n'
+                    f'  |     except* Exception as e:\n'
+                    f'  |         raise\n'
+                    f'  | ExceptionGroup:  (1 sub-exception)\n'
+                    f'  +-+---------------- 1 ----------------\n'
+                    f'    | Traceback (most recent call last):\n'
+                    f'    |   File "{__file__}", line {exc.__code__.co_firstlineno + 2}, in exc\n'
+                    f'    |     raise Exception(42)\n'
+                    f'    | Exception: 42\n'
+                    f'    +------------------------------------\n')
+
+        report = self.get_report(exc)
+        self.assertEqual(report, expected)
+
     def test_KeyboardInterrupt_at_first_line_of_frame(self):
         # see GH-93249
         def f():
@@ -2902,6 +2991,7 @@ def f():
         self.assertEqual(report, expected)
 
 
+@force_not_colorized_test_class
 class PyExcReportingTests(BaseExceptionReportingTests, unittest.TestCase):
     #
     # This checks reporting through the 'traceback' module, with both
@@ -2918,6 +3008,7 @@ def get_report(self, e):
         return s
 
 
+@force_not_colorized_test_class
 class CExcReportingTests(BaseExceptionReportingTests, unittest.TestCase):
     #
     # This checks built-in reporting by the interpreter.
@@ -3272,6 +3363,41 @@ def format_frame_summary(self, frame_summary, colorize=False):
             f'  File "{__file__}", line {lno}, in f\n    1/0\n'
         )
 
+    def test_summary_should_show_carets(self):
+        # See: https://github.com/python/cpython/issues/122353
+
+        # statement to execute and to get a ZeroDivisionError for a traceback
+        statement = "abcdef = 1 / 0 and 2.0"
+        colno = statement.index('1 / 0')
+        end_colno = colno + len('1 / 0')
+
+        # Actual line to use when rendering the traceback
+        # and whose AST will be extracted (it will be empty).
+        cached_line = '# this line will be used during rendering'
+        self.addCleanup(unlink, TESTFN)
+        with open(TESTFN, "w") as file:
+            file.write(cached_line)
+        linecache.updatecache(TESTFN, {})
+
+        try:
+            exec(compile(statement, TESTFN, "exec"))
+        except ZeroDivisionError as exc:
+            # This is the simplest way to create a StackSummary
+            # whose FrameSummary items have their column offsets.
+            s = traceback.TracebackException.from_exception(exc).stack
+            self.assertIsInstance(s, traceback.StackSummary)
+            with unittest.mock.patch.object(s, '_should_show_carets',
+                                            wraps=s._should_show_carets) as ff:
+                self.assertEqual(len(s), 2)
+                self.assertListEqual(
+                    s.format_frame_summary(s[1]).splitlines(),
+                    [
+                        f'  File "{TESTFN}", line 1, in <module>',
+                        f'    {cached_line}'
+                     ]
+                )
+                ff.assert_called_with(colno, end_colno, [cached_line], None)
+
 class Unrepresentable:
     def __repr__(self) -> str:
         raise Exception("Unrepresentable")
@@ -3384,7 +3510,7 @@ def test_long_context_chain(self):
         def f():
             try:
                 1/0
-            except:
+            except ZeroDivisionError:
                 f()
 
         try:
@@ -3488,7 +3614,7 @@ def test_comparison_params_variations(self):
         def raise_exc():
             try:
                 raise ValueError('bad value')
-            except:
+            except ValueError:
                 raise
 
         def raise_with_locals():
@@ -4566,6 +4692,49 @@ def foo():
             f'{boldm}ZeroDivisionError{reset}: {magenta}division by zero{reset}']
         self.assertEqual(actual, expected)
 
+    def test_colorized_traceback_from_exception_group(self):
+        def foo():
+            exceptions = []
+            try:
+                1 / 0
+            except ZeroDivisionError as inner_exc:
+                exceptions.append(inner_exc)
+            raise ExceptionGroup("test", exceptions)
+
+        try:
+            foo()
+        except Exception as e:
+            exc = traceback.TracebackException.from_exception(
+                e, capture_locals=True
+            )
+
+        red = _colorize.ANSIColors.RED
+        boldr = _colorize.ANSIColors.BOLD_RED
+        magenta = _colorize.ANSIColors.MAGENTA
+        boldm = _colorize.ANSIColors.BOLD_MAGENTA
+        reset = _colorize.ANSIColors.RESET
+        lno_foo = foo.__code__.co_firstlineno
+        actual = "".join(exc.format(colorize=True)).splitlines()
+        expected = [f"  + Exception Group Traceback (most recent call last):",
+                   f'  |   File {magenta}"{__file__}"{reset}, line {magenta}{lno_foo+9}{reset}, in {magenta}test_colorized_traceback_from_exception_group{reset}',
+                   f'  |     {red}foo{reset}{boldr}(){reset}',
+                   f'  |     {red}~~~{reset}{boldr}^^{reset}',
+                   f"  |     e = ExceptionGroup('test', [ZeroDivisionError('division by zero')])",
+                   f"  |     foo = {foo}",
+                   f'  |     self = <{__name__}.TestColorizedTraceback testMethod=test_colorized_traceback_from_exception_group>',
+                   f'  |   File {magenta}"{__file__}"{reset}, line {magenta}{lno_foo+6}{reset}, in {magenta}foo{reset}',
+                   f'  |     raise ExceptionGroup("test", exceptions)',
+                   f"  |     exceptions = [ZeroDivisionError('division by zero')]",
+                   f'  | {boldm}ExceptionGroup{reset}: {magenta}test (1 sub-exception){reset}',
+                   f'  +-+---------------- 1 ----------------',
+                   f'    | Traceback (most recent call last):',
+                   f'    |   File {magenta}"{__file__}"{reset}, line {magenta}{lno_foo+3}{reset}, in {magenta}foo{reset}',
+                   f'    |     {red}1 {reset}{boldr}/{reset}{red} 0{reset}',
+                   f'    |     {red}~~{reset}{boldr}^{reset}{red}~~{reset}',
+                   f"    |     exceptions = [ZeroDivisionError('division by zero')]",
+                   f'    | {boldm}ZeroDivisionError{reset}: {magenta}division by zero{reset}',
+                   f'    +------------------------------------']
+        self.assertEqual(actual, expected)
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_tracemalloc.py b/Lib/test/test_tracemalloc.py
index 5755f7697de91a..0220a83d24b428 100644
--- a/Lib/test/test_tracemalloc.py
+++ b/Lib/test/test_tracemalloc.py
@@ -1,14 +1,16 @@
 import contextlib
 import os
 import sys
+import textwrap
 import tracemalloc
 import unittest
 from unittest.mock import patch
 from test.support.script_helper import (assert_python_ok, assert_python_failure,
                                         interpreter_requires_environment)
 from test import support
-from test.support import os_helper
 from test.support import force_not_colorized
+from test.support import os_helper
+from test.support import threading_helper
 
 try:
     import _testcapi
@@ -18,6 +20,7 @@
     _testinternalcapi = None
 
 
+DEFAULT_DOMAIN = 0
 EMPTY_STRING_SIZE = sys.getsizeof(b'')
 INVALID_NFRAME = (-1, 2**30)
 
@@ -952,7 +955,6 @@ def check_env_var_invalid(self, nframe):
             return
         self.fail(f"unexpected output: {stderr!a}")
 
-
     def test_env_var_invalid(self):
         for nframe in INVALID_NFRAME:
             with self.subTest(nframe=nframe):
@@ -981,6 +983,7 @@ def check_sys_xoptions_invalid(self, nframe):
             return
         self.fail(f"unexpected output: {stderr!a}")
 
+    @force_not_colorized
     def test_sys_xoptions_invalid(self):
         for nframe in INVALID_NFRAME:
             with self.subTest(nframe=nframe):
@@ -1026,8 +1029,8 @@ def track(self, release_gil=False, nframe=1):
                                     release_gil)
         return frames
 
-    def untrack(self):
-        _testcapi.tracemalloc_untrack(self.domain, self.ptr)
+    def untrack(self, release_gil=False):
+        _testcapi.tracemalloc_untrack(self.domain, self.ptr, release_gil)
 
     def get_traced_memory(self):
         # Get the traced size in the domain
@@ -1069,7 +1072,7 @@ def test_track_already_tracked(self):
         self.assertEqual(self.get_traceback(),
                          tracemalloc.Traceback(frames))
 
-    def test_untrack(self):
+    def check_untrack(self, release_gil):
         tracemalloc.start()
 
         self.track()
@@ -1077,13 +1080,19 @@ def test_untrack(self):
         self.assertEqual(self.get_traced_memory(), self.size)
 
         # untrack must remove the trace
-        self.untrack()
+        self.untrack(release_gil)
         self.assertIsNone(self.get_traceback())
         self.assertEqual(self.get_traced_memory(), 0)
 
         # calling _PyTraceMalloc_Untrack() multiple times must not crash
-        self.untrack()
-        self.untrack()
+        self.untrack(release_gil)
+        self.untrack(release_gil)
+
+    def test_untrack(self):
+        self.check_untrack(False)
+
+    def test_untrack_without_gil(self):
+        self.check_untrack(True)
 
     def test_stop_track(self):
         tracemalloc.start()
@@ -1101,6 +1110,37 @@ def test_stop_untrack(self):
         with self.assertRaises(RuntimeError):
             self.untrack()
 
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    @threading_helper.requires_working_threading()
+    # gh-128679: Test crash on a debug build (especially on FreeBSD).
+    @unittest.skipIf(support.Py_DEBUG, 'need release build')
+    def test_tracemalloc_track_race(self):
+        # gh-128679: Test fix for tracemalloc.stop() race condition
+        _testcapi.tracemalloc_track_race()
+
+    def test_late_untrack(self):
+        code = textwrap.dedent(f"""
+            from test import support
+            import tracemalloc
+            import _testcapi
+
+            class Tracked:
+                def __init__(self, domain, size):
+                    self.domain = domain
+                    self.ptr = id(self)
+                    self.size = size
+                    _testcapi.tracemalloc_track(self.domain, self.ptr, self.size)
+
+                def __del__(self, untrack=_testcapi.tracemalloc_untrack):
+                    untrack(self.domain, self.ptr, 1)
+
+            domain = {DEFAULT_DOMAIN}
+            tracemalloc.start()
+            obj = Tracked(domain, 1024 * 1024)
+            support.late_deletion(obj)
+        """)
+        assert_python_ok("-c", code)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_ttk/test_style.py b/Lib/test/test_ttk/test_style.py
index 9a04a95dc40d65..eeaf5de2e303f6 100644
--- a/Lib/test/test_ttk/test_style.py
+++ b/Lib/test/test_ttk/test_style.py
@@ -227,13 +227,13 @@ def test_element_create_image(self):
                                    foreground='blue', background='yellow')
         img3 = tkinter.BitmapImage(master=self.root, file=imgfile,
                                    foreground='white', background='black')
-        style.element_create('Button.button', 'image',
+        style.element_create('TestButton.button', 'image',
                              img1, ('pressed', img2), ('active', img3),
                              border=(2, 4), sticky='we')
-        self.assertIn('Button.button', style.element_names())
+        self.assertIn('TestButton.button', style.element_names())
 
-        style.layout('Button', [('Button.button', {'sticky': 'news'})])
-        b = ttk.Button(self.root, style='Button')
+        style.layout('TestButton', [('TestButton.button', {'sticky': 'news'})])
+        b = ttk.Button(self.root, style='TestButton')
         b.pack(expand=True, fill='both')
         self.assertEqual(b.winfo_reqwidth(), 16)
         self.assertEqual(b.winfo_reqheight(), 16)
diff --git a/Lib/test/test_ttk/test_widgets.py b/Lib/test/test_ttk/test_widgets.py
index ca7402b276013d..10bec33be617a1 100644
--- a/Lib/test/test_ttk/test_widgets.py
+++ b/Lib/test/test_ttk/test_widgets.py
@@ -5,8 +5,9 @@
 import sys
 
 from test.test_ttk_textonly import MockTclObj
-from test.test_tkinter.support import (AbstractTkTest, tk_version, get_tk_patchlevel,
-                                  simulate_mouse_click, AbstractDefaultRootTest)
+from test.test_tkinter.support import (
+    AbstractTkTest, requires_tk, tk_version, get_tk_patchlevel,
+    simulate_mouse_click, AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (add_standard_options,
     AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests)
 
@@ -27,16 +28,27 @@ def test_configure_class(self):
 
     def test_configure_padding(self):
         widget = self.create()
-        self.checkParam(widget, 'padding', 0, expected=('0',))
-        self.checkParam(widget, 'padding', 5, expected=('5',))
-        self.checkParam(widget, 'padding', (5, 6), expected=('5', '6'))
+        if get_tk_patchlevel(self.root) < (8, 6, 14):
+            def padding_conv(value):
+                self.assertIsInstance(value, tuple)
+                return tuple(map(str, value))
+        else:
+            padding_conv = None
+        self.checkParam(widget, 'padding', 0, expected=(0,), conv=padding_conv)
+        self.checkParam(widget, 'padding', 5, expected=(5,), conv=padding_conv)
+        self.checkParam(widget, 'padding', (5, 6),
+                        expected=(5, 6), conv=padding_conv)
         self.checkParam(widget, 'padding', (5, 6, 7),
-                        expected=('5', '6', '7'))
+                        expected=(5, 6, 7), conv=padding_conv)
         self.checkParam(widget, 'padding', (5, 6, 7, 8),
-                        expected=('5', '6', '7', '8'))
+                        expected=(5, 6, 7, 8), conv=padding_conv)
         self.checkParam(widget, 'padding', ('5p', '6p', '7p', '8p'))
         self.checkParam(widget, 'padding', (), expected='')
 
+    def test_configure_state(self):
+        widget = self.create()
+        self.checkParams(widget, 'state', 'active', 'disabled', 'readonly')
+
     def test_configure_style(self):
         widget = self.create()
         self.assertEqual(widget['style'], '')
@@ -50,6 +62,11 @@ def test_configure_style(self):
         self.assertEqual(widget2['class'], 'Foo')
         # XXX
 
+    def test_configure_relief(self):
+        widget = self.create()
+        self.checkReliefParam(widget, 'relief',
+                              allow_empty=(tk_version >= (8, 7)))
+
 
 class WidgetTest(AbstractTkTest, unittest.TestCase):
     """Tests methods available in every ttk widget."""
@@ -150,6 +167,7 @@ def test_configure_labelwidget(self):
 
 
 class AbstractLabelTest(AbstractWidgetTest):
+    _allow_empty_justify = True
 
     def checkImageParam(self, widget, name):
         image = tkinter.PhotoImage(master=self.root, name='image1')
@@ -165,17 +183,13 @@ def checkImageParam(self, widget, name):
                 errmsg='image "spam" doesn\'t exist')
 
     def test_configure_compound(self):
-        options = 'none text image center top bottom left right'.split()
-        errmsg = (
-            'bad compound "{}": must be'
-            f' {", ".join(options[:-1])}, or {options[-1]}'
-            )
+        values = ('none', 'text', 'image', 'center', 'top', 'bottom', 'left', 'right')
+        if tk_version >= (8, 7):
+            values += ('',)
         widget = self.create()
-        self.checkEnumParam(widget, 'compound', *options, errmsg=errmsg)
+        self.checkEnumParam(widget, 'compound', *values, allow_empty=True)
 
-    def test_configure_state(self):
-        widget = self.create()
-        self.checkParams(widget, 'state', 'active', 'disabled', 'normal')
+    test_configure_justify = requires_tk(8, 7)(StandardOptionsTests.test_configure_justify)
 
     def test_configure_width(self):
         widget = self.create()
@@ -192,21 +206,19 @@ class LabelTest(AbstractLabelTest, unittest.TestCase):
         'underline', 'width', 'wraplength',
     )
     _conv_pixels = False
+    _allow_empty_justify = tk_version >= (8, 7)
 
     def create(self, **kwargs):
         return ttk.Label(self.root, **kwargs)
 
-    def test_configure_font(self):
-        widget = self.create()
-        self.checkParam(widget, 'font',
-                        '-Adobe-Helvetica-Medium-R-Normal--*-120-*-*-*-*-*-*')
+    test_configure_justify = StandardOptionsTests.test_configure_justify
 
 
 @add_standard_options(StandardTtkOptionsTests)
 class ButtonTest(AbstractLabelTest, unittest.TestCase):
     OPTIONS = (
         'class', 'command', 'compound', 'cursor', 'default',
-        'image', 'padding', 'state', 'style',
+        'image', 'justify', 'padding', 'state', 'style',
         'takefocus', 'text', 'textvariable',
         'underline', 'width',
     )
@@ -216,7 +228,9 @@ def create(self, **kwargs):
 
     def test_configure_default(self):
         widget = self.create()
-        self.checkEnumParam(widget, 'default', 'normal', 'active', 'disabled')
+        values = ('normal', 'active', 'disabled')
+        self.checkEnumParam(widget, 'default', *values,
+                            sort=tk_version >= (8, 7))
 
     def test_invoke(self):
         success = []
@@ -229,7 +243,7 @@ def test_invoke(self):
 class CheckbuttonTest(AbstractLabelTest, unittest.TestCase):
     OPTIONS = (
         'class', 'command', 'compound', 'cursor',
-        'image',
+        'image', 'justify',
         'offvalue', 'onvalue',
         'padding', 'state', 'style',
         'takefocus', 'text', 'textvariable',
@@ -268,7 +282,10 @@ def cb_test():
 
         cbtn['command'] = ''
         res = cbtn.invoke()
-        self.assertFalse(str(res))
+        if tk_version >= (8, 7) and self.wantobjects:
+            self.assertEqual(res, ())
+        else:
+            self.assertEqual(str(res), '')
         self.assertLessEqual(len(success), 1)
         self.assertEqual(cbtn['offvalue'],
             cbtn.tk.globalgetvar(cbtn['variable']))
@@ -315,10 +332,12 @@ class EntryTest(AbstractWidgetTest, unittest.TestCase):
         'background', 'class', 'cursor',
         'exportselection', 'font', 'foreground',
         'invalidcommand', 'justify',
+        'placeholder', 'placeholderforeground',
         'show', 'state', 'style', 'takefocus', 'textvariable',
         'validate', 'validatecommand', 'width', 'xscrollcommand',
     )
-    IDENTIFY_AS = 'Entry.field' if sys.platform == 'darwin' else 'textarea'
+    # bpo-27313: macOS Tk/Tcl may or may not report 'Entry.field'.
+    IDENTIFY_AS = {'Entry.field', 'textarea'}
 
     def setUp(self):
         super().setUp()
@@ -337,11 +356,6 @@ def test_configure_show(self):
         self.checkParam(widget, 'show', '')
         self.checkParam(widget, 'show', ' ')
 
-    def test_configure_state(self):
-        widget = self.create()
-        self.checkParams(widget, 'state',
-                         'disabled', 'normal', 'readonly')
-
     def test_configure_validate(self):
         widget = self.create()
         self.checkEnumParam(widget, 'validate',
@@ -360,8 +374,7 @@ def test_identify(self):
         self.entry.pack()
         self.entry.update()
 
-        # bpo-27313: macOS Cocoa widget differs from X, allow either
-        self.assertEqual(self.entry.identify(5, 5), self.IDENTIFY_AS)
+        self.assertIn(self.entry.identify(5, 5), self.IDENTIFY_AS)
         self.assertEqual(self.entry.identify(-1, -1), "")
 
         self.assertRaises(tkinter.TclError, self.entry.identify, None, 5)
@@ -442,12 +455,13 @@ class ComboboxTest(EntryTest, unittest.TestCase):
     OPTIONS = (
         'background', 'class', 'cursor', 'exportselection',
         'font', 'foreground', 'height', 'invalidcommand',
-        'justify', 'postcommand', 'show', 'state', 'style',
+        'justify', 'placeholder', 'placeholderforeground', 'postcommand',
+        'show', 'state', 'style',
         'takefocus', 'textvariable',
         'validate', 'validatecommand', 'values',
         'width', 'xscrollcommand',
     )
-    IDENTIFY_AS = 'Combobox.button' if sys.platform == 'darwin' else 'textarea'
+    IDENTIFY_AS = {'Combobox.button', 'textarea'}
 
     def setUp(self):
         super().setUp()
@@ -506,7 +520,7 @@ def check_get_current(getval, currval):
             self.assertEqual(self.combo.get(), getval)
             self.assertEqual(self.combo.current(), currval)
 
-        self.assertEqual(self.combo['values'], '')
+        self.assertIn(self.combo['values'], ((), ''))
         check_get_current('', -1)
 
         self.checkParam(self.combo, 'values', 'mon tue wed thur',
@@ -631,8 +645,14 @@ def test_insert(self):
         child2 = ttk.Label(self.root)
         child3 = ttk.Label(self.root)
 
-        self.assertRaises(tkinter.TclError, self.paned.insert, 0, child)
+        if tk_version >= (8, 7):
+            self.paned.insert(0, child)
+            self.assertEqual(self.paned.panes(), (str(child),))
+            self.paned.forget(0)
+        else:
+            self.assertRaises(tkinter.TclError, self.paned.insert, 0, child)
 
+        self.assertEqual(self.paned.panes(), ())
         self.paned.insert('end', child2)
         self.paned.insert(0, child)
         self.assertEqual(self.paned.panes(), (str(child), str(child2)))
@@ -696,7 +716,7 @@ def test_sashpos(self):
 class RadiobuttonTest(AbstractLabelTest, unittest.TestCase):
     OPTIONS = (
         'class', 'command', 'compound', 'cursor',
-        'image',
+        'image', 'justify',
         'padding', 'state', 'style',
         'takefocus', 'text', 'textvariable',
         'underline', 'value', 'variable', 'width',
@@ -735,7 +755,10 @@ def cb_test():
 
         cbtn2['command'] = ''
         res = cbtn2.invoke()
-        self.assertEqual(str(res), '')
+        if tk_version >= (8, 7) and self.wantobjects:
+            self.assertEqual(res, ())
+        else:
+            self.assertEqual(str(res), '')
         self.assertLessEqual(len(success), 1)
         self.assertEqual(conv(cbtn2['value']), myvar.get())
         self.assertEqual(myvar.get(),
@@ -747,7 +770,7 @@ def cb_test():
 class MenubuttonTest(AbstractLabelTest, unittest.TestCase):
     OPTIONS = (
         'class', 'compound', 'cursor', 'direction',
-        'image', 'menu', 'padding', 'state', 'style',
+        'image', 'justify', 'menu', 'padding', 'state', 'style',
         'takefocus', 'text', 'textvariable',
         'underline', 'width',
     )
@@ -755,10 +778,11 @@ class MenubuttonTest(AbstractLabelTest, unittest.TestCase):
     def create(self, **kwargs):
         return ttk.Menubutton(self.root, **kwargs)
 
-    def test_direction(self):
+    def test_configure_direction(self):
         widget = self.create()
-        self.checkEnumParam(widget, 'direction',
-                'above', 'below', 'left', 'right', 'flush')
+        values = ('above', 'below', 'left', 'right', 'flush')
+        self.checkEnumParam(widget, 'direction', *values,
+                            sort=tk_version >= (8, 7))
 
     def test_configure_menu(self):
         widget = self.create()
@@ -771,7 +795,7 @@ def test_configure_menu(self):
 class ScaleTest(AbstractWidgetTest, unittest.TestCase):
     OPTIONS = (
         'class', 'command', 'cursor', 'from', 'length',
-        'orient', 'style', 'takefocus', 'to', 'value', 'variable',
+        'orient', 'state', 'style', 'takefocus', 'to', 'value', 'variable',
     )
     _conv_pixels = False
     default_orient = 'horizontal'
@@ -793,6 +817,8 @@ def test_configure_length(self):
         widget = self.create()
         self.checkPixelsParam(widget, 'length', 130, 131.2, 135.6, '5i')
 
+    test_configure_state = requires_tk(8, 6, 9)(StandardTtkOptionsTests.test_configure_state)
+
     def test_configure_to(self):
         widget = self.create()
         self.checkFloatParam(widget, 'to', 300, 14.9, 15.1, -10, conv=False)
@@ -876,16 +902,28 @@ def test_set(self):
 @add_standard_options(StandardTtkOptionsTests)
 class ProgressbarTest(AbstractWidgetTest, unittest.TestCase):
     OPTIONS = (
-        'class', 'cursor', 'orient', 'length',
-        'mode', 'maximum', 'phase',
+        'anchor', 'class', 'cursor', 'font', 'foreground', 'justify',
+        'orient', 'length',
+        'mode', 'maximum', 'phase', 'text', 'wraplength',
         'style', 'takefocus', 'value', 'variable',
     )
     _conv_pixels = False
+    _allow_empty_justify = True
     default_orient = 'horizontal'
 
     def create(self, **kwargs):
         return ttk.Progressbar(self.root, **kwargs)
 
+    @requires_tk(8, 7)
+    def test_configure_anchor(self):
+        widget = self.create()
+        self.checkEnumParam(widget, 'anchor',
+                'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw', 'center', '')
+
+    test_configure_font = requires_tk(8, 7)(StandardOptionsTests.test_configure_font)
+    test_configure_foreground = requires_tk(8, 7)(StandardOptionsTests.test_configure_foreground)
+    test_configure_justify = requires_tk(8, 7)(StandardTtkOptionsTests.test_configure_justify)
+
     def test_configure_length(self):
         widget = self.create()
         self.checkPixelsParam(widget, 'length', 100.1, 56.7, '2i')
@@ -902,11 +940,15 @@ def test_configure_phase(self):
         # XXX
         pass
 
+    test_configure_text = requires_tk(8, 7)(StandardOptionsTests.test_configure_text)
+
     def test_configure_value(self):
         widget = self.create()
         self.checkFloatParam(widget, 'value', 150.2, 77.7, 0, -10,
                              conv=False)
 
+    test_configure_wraplength = requires_tk(8, 7)(StandardOptionsTests.test_configure_wraplength)
+
 
 @unittest.skipIf(sys.platform == 'darwin',
                  'ttk.Scrollbar is special on MacOSX')
@@ -921,11 +963,13 @@ def create(self, **kwargs):
         return ttk.Scrollbar(self.root, **kwargs)
 
 
-@add_standard_options(IntegerSizeTests, StandardTtkOptionsTests)
+@add_standard_options(StandardTtkOptionsTests)
 class NotebookTest(AbstractWidgetTest, unittest.TestCase):
     OPTIONS = (
         'class', 'cursor', 'height', 'padding', 'style', 'takefocus', 'width',
     )
+    if tk_version >= (8, 7):
+        _conv_pixels = False
 
     def setUp(self):
         super().setUp()
@@ -938,6 +982,20 @@ def setUp(self):
     def create(self, **kwargs):
         return ttk.Notebook(self.root, **kwargs)
 
+    def test_configure_height(self):
+        widget = self.create()
+        if get_tk_patchlevel(self.root) < (8, 6, 15):
+            self.checkIntegerParam(widget, 'height', 402, -402, 0)
+        else:
+            self.checkPixelsParam(widget, 'height', '10c', 402, -402, 0, conv=False)
+
+    def test_configure_width(self):
+        widget = self.create()
+        if get_tk_patchlevel(self.root) < (8, 6, 15):
+            self.checkIntegerParam(widget, 'width', 402, -402, 0)
+        else:
+            self.checkPixelsParam(widget, 'width', '10c', 402, -402, 0, conv=False)
+
     def test_tab_identifiers(self):
         self.nb.forget(0)
         self.nb.hide(self.child2)
@@ -1044,7 +1102,11 @@ def test_insert(self):
         self.nb.insert(self.child1, child3)
         self.assertEqual(self.nb.tabs(), (str(child3), ) + tabs)
         self.nb.forget(child3)
-        self.assertRaises(tkinter.TclError, self.nb.insert, 2, child3)
+        if tk_version >= (8, 7):
+            self.nb.insert(2, child3)
+            self.assertEqual(self.nb.tabs(), (*tabs, str(child3)))
+        else:
+            self.assertRaises(tkinter.TclError, self.nb.insert, 2, child3)
         self.assertRaises(tkinter.TclError, self.nb.insert, -1, child3)
 
         # bad inserts
@@ -1136,11 +1198,13 @@ class SpinboxTest(EntryTest, unittest.TestCase):
     OPTIONS = (
         'background', 'class', 'command', 'cursor', 'exportselection',
         'font', 'foreground', 'format', 'from',  'increment',
-        'invalidcommand', 'justify', 'show', 'state', 'style',
+        'invalidcommand', 'justify',
+        'placeholder', 'placeholderforeground',
+        'show', 'state', 'style',
         'takefocus', 'textvariable', 'to', 'validate', 'validatecommand',
         'values', 'width', 'wrap', 'xscrollcommand',
     )
-    IDENTIFY_AS = 'Spinbox.field' if sys.platform == 'darwin' else 'textarea'
+    IDENTIFY_AS = {'Spinbox.field', 'textarea'}
 
     def setUp(self):
         super().setUp()
@@ -1310,8 +1374,9 @@ def test_configure_values(self):
 class TreeviewTest(AbstractWidgetTest, unittest.TestCase):
     OPTIONS = (
         'class', 'columns', 'cursor', 'displaycolumns',
-        'height', 'padding', 'selectmode', 'show',
-        'style', 'takefocus', 'xscrollcommand', 'yscrollcommand',
+        'height', 'padding', 'selectmode', 'selecttype', 'show', 'striped',
+        'style', 'takefocus', 'titlecolumns', 'titleitems',
+        'xscrollcommand', 'yscrollcommand',
     )
 
     def setUp(self):
@@ -1326,7 +1391,8 @@ def test_configure_columns(self):
         self.checkParam(widget, 'columns', 'a b c',
                         expected=('a', 'b', 'c'))
         self.checkParam(widget, 'columns', ('a', 'b', 'c'))
-        self.checkParam(widget, 'columns', '')
+        self.checkParam(widget, 'columns', '',
+                        expected=() if tk_version >= (8, 7) else '')
 
     def test_configure_displaycolumns(self):
         widget = self.create()
@@ -1338,11 +1404,12 @@ def test_configure_displaycolumns(self):
                         expected=('#all',))
         self.checkParam(widget, 'displaycolumns', (2, 1, 0))
         self.checkInvalidParam(widget, 'displaycolumns', ('a', 'b', 'd'),
-                               errmsg='Invalid column index d')
+                               errmsg='Invalid column index "?d"?')
+        errmsg = 'Column index "?{}"? out of bounds'
         self.checkInvalidParam(widget, 'displaycolumns', (1, 2, 3),
-                               errmsg='Column index 3 out of bounds')
+                               errmsg=errmsg.format(3))
         self.checkInvalidParam(widget, 'displaycolumns', (1, -2),
-                               errmsg='Column index -2 out of bounds')
+                               errmsg=errmsg.format(-2))
 
     def test_configure_height(self):
         widget = self.create()
@@ -1354,6 +1421,11 @@ def test_configure_selectmode(self):
         self.checkEnumParam(widget, 'selectmode',
                             'none', 'browse', 'extended')
 
+    @requires_tk(8, 7)
+    def test_configure_selecttype(self):
+        widget = self.create()
+        self.checkEnumParam(widget, 'selecttype', 'item', 'cell')
+
     def test_configure_show(self):
         widget = self.create()
         self.checkParam(widget, 'show', 'tree headings',
@@ -1363,6 +1435,23 @@ def test_configure_show(self):
         self.checkParam(widget, 'show', 'tree', expected=('tree',))
         self.checkParam(widget, 'show', 'headings', expected=('headings',))
 
+    @requires_tk(8, 7)
+    def test_configure_striped(self):
+        widget = self.create()
+        self.checkBooleanParam(widget, 'striped')
+
+    @requires_tk(8, 7)
+    def test_configure_titlecolumns(self):
+        widget = self.create()
+        self.checkIntegerParam(widget, 'titlecolumns', 0, 1, 5)
+        self.checkInvalidParam(widget, 'titlecolumns', -2)
+
+    @requires_tk(8, 7)
+    def test_configure_titleitems(self):
+        widget = self.create()
+        self.checkIntegerParam(widget, 'titleitems', 0, 1, 5)
+        self.checkInvalidParam(widget, 'titleitems', -2)
+
     def test_bbox(self):
         self.tv.pack()
         self.assertEqual(self.tv.bbox(''), '')
diff --git a/Lib/test/test_type_aliases.py b/Lib/test/test_type_aliases.py
index 9c325bc595f585..4c17933e7f7c23 100644
--- a/Lib/test/test_type_aliases.py
+++ b/Lib/test/test_type_aliases.py
@@ -1,4 +1,5 @@
 import pickle
+import textwrap
 import types
 import unittest
 from test.support import check_syntax_error, run_code
@@ -211,6 +212,19 @@ def test_generic(self):
         self.assertEqual(TA.__value__, list[T])
         self.assertEqual(TA.__type_params__, (T,))
         self.assertEqual(TA.__module__, __name__)
+        self.assertIs(type(TA[int]), types.GenericAlias)
+
+    def test_not_generic(self):
+        TA = TypeAliasType("TA", list[int], type_params=())
+        self.assertEqual(TA.__name__, "TA")
+        self.assertEqual(TA.__value__, list[int])
+        self.assertEqual(TA.__type_params__, ())
+        self.assertEqual(TA.__module__, __name__)
+        with self.assertRaisesRegex(
+            TypeError,
+            "Only generic type aliases are subscriptable",
+        ):
+            TA[int]
 
     def test_keywords(self):
         TA = TypeAliasType(name="TA", value=int)
@@ -328,3 +342,22 @@ def test_pickling_local(self):
                 with self.subTest(thing=thing, proto=proto):
                     with self.assertRaises(pickle.PickleError):
                         pickle.dumps(thing, protocol=proto)
+
+
+class TypeParamsExoticGlobalsTest(unittest.TestCase):
+    def test_exec_with_unusual_globals(self):
+        class customdict(dict):
+            def __missing__(self, key):
+                return key
+
+        code = compile("type Alias = undefined", "test", "exec")
+        ns = customdict()
+        exec(code, ns)
+        Alias = ns["Alias"]
+        self.assertEqual(Alias.__value__, "undefined")
+
+        code = compile("class A: type Alias = undefined", "test", "exec")
+        ns = customdict()
+        exec(code, ns)
+        Alias = ns["A"].Alias
+        self.assertEqual(Alias.__value__, "undefined")
diff --git a/Lib/test/test_type_cache.py b/Lib/test/test_type_cache.py
index e90e315c808361..8e2bb0c238257b 100644
--- a/Lib/test/test_type_cache.py
+++ b/Lib/test/test_type_cache.py
@@ -92,6 +92,21 @@ class C:
         new_version = type_get_version(C)
         self.assertEqual(new_version, 0)
 
+    def test_119462(self):
+
+        class Holder:
+            value = None
+
+            @classmethod
+            def set_value(cls):
+                cls.value = object()
+
+        class HolderSub(Holder):
+            pass
+
+        for _ in range(1050):
+            Holder.set_value()
+            HolderSub.value
 
 @support.cpython_only
 @requires_specialization
@@ -105,8 +120,10 @@ def _assign_valid_version_or_skip(self, type_):
         if type_get_version(type_) == 0:
             self.skipTest("Could not assign valid type version")
 
-    def _assign_and_check_version_0(self, user_type):
+    def _no_more_versions(self, user_type):
         type_modified(user_type)
+        for _ in range(1001):
+            type_assign_specific_version_unsafe(user_type, 1000_000_000)
         type_assign_specific_version_unsafe(user_type, 0)
         self.assertEqual(type_get_version(user_type), 0)
 
@@ -135,7 +152,7 @@ def load_foo_1(type_):
         self._check_specialization(load_foo_1, A, "LOAD_ATTR", should_specialize=True)
         del load_foo_1
 
-        self._assign_and_check_version_0(A)
+        self._no_more_versions(A)
 
         def load_foo_2(type_):
             return type_.foo
@@ -143,8 +160,8 @@ def load_foo_2(type_):
         self._check_specialization(load_foo_2, A, "LOAD_ATTR", should_specialize=False)
 
     def test_class_load_attr_specialization_static_type(self):
-        self._assign_valid_version_or_skip(str)
-        self._assign_valid_version_or_skip(bytes)
+        self.assertNotEqual(type_get_version(str), 0)
+        self.assertNotEqual(type_get_version(bytes), 0)
 
         def get_capitalize_1(type_):
             return type_.capitalize
@@ -152,25 +169,6 @@ def get_capitalize_1(type_):
         self._check_specialization(get_capitalize_1, str, "LOAD_ATTR", should_specialize=True)
         self.assertEqual(get_capitalize_1(str)('hello'), 'Hello')
         self.assertEqual(get_capitalize_1(bytes)(b'hello'), b'Hello')
-        del get_capitalize_1
-
-        # Permanently overflow the static type version counter, and force str and bytes
-        # to have tp_version_tag == 0
-        for _ in range(2**16):
-            type_modified(str)
-            type_assign_version(str)
-            type_modified(bytes)
-            type_assign_version(bytes)
-
-        self.assertEqual(type_get_version(str), 0)
-        self.assertEqual(type_get_version(bytes), 0)
-
-        def get_capitalize_2(type_):
-            return type_.capitalize
-
-        self._check_specialization(get_capitalize_2, str, "LOAD_ATTR", should_specialize=False)
-        self.assertEqual(get_capitalize_2(str)('hello'), 'Hello')
-        self.assertEqual(get_capitalize_2(bytes)(b'hello'), b'Hello')
 
     def test_property_load_attr_specialization_user_type(self):
         class G:
@@ -186,7 +184,7 @@ def load_x_1(instance):
         self._check_specialization(load_x_1, G(), "LOAD_ATTR", should_specialize=True)
         del load_x_1
 
-        self._assign_and_check_version_0(G)
+        self._no_more_versions(G)
 
         def load_x_2(instance):
             instance.x
@@ -205,7 +203,7 @@ def store_bar_1(type_):
         self._check_specialization(store_bar_1, B(), "STORE_ATTR", should_specialize=True)
         del store_bar_1
 
-        self._assign_and_check_version_0(B)
+        self._no_more_versions(B)
 
         def store_bar_2(type_):
             type_.bar = 10
@@ -225,7 +223,7 @@ def call_class_1(type_):
         self._check_specialization(call_class_1, F, "CALL", should_specialize=True)
         del call_class_1
 
-        self._assign_and_check_version_0(F)
+        self._no_more_versions(F)
 
         def call_class_2(type_):
             type_()
@@ -244,7 +242,7 @@ def to_bool_1(instance):
         self._check_specialization(to_bool_1, H(), "TO_BOOL", should_specialize=True)
         del to_bool_1
 
-        self._assign_and_check_version_0(H)
+        self._no_more_versions(H)
 
         def to_bool_2(instance):
             not instance
diff --git a/Lib/test/test_type_params.py b/Lib/test/test_type_params.py
index 82f1007f9ac97b..4eb4bf024de757 100644
--- a/Lib/test/test_type_params.py
+++ b/Lib/test/test_type_params.py
@@ -563,6 +563,11 @@ class C[T, U]:
         self.assertIs(T, C.Alias.__type_params__[0])
         self.assertIs(U, C.__type_params__[1])
 
+    def test_type_special_case(self):
+        # https://github.com/python/cpython/issues/119011
+        self.assertEqual(type.__type_params__, ())
+        self.assertEqual(object.__type_params__, ())
+
 
 def make_base(arg):
     class Base:
@@ -823,6 +828,100 @@ def meth[__U](self, arg: __T, arg2: __U):
 
         self.assertEqual(Foo.Alias.__value__, (T, V))
 
+    def test_no_leaky_mangling_in_module(self):
+        ns = run_code("""
+            __before = "before"
+            class X[T]: pass
+            __after = "after"
+        """)
+        self.assertEqual(ns["__before"], "before")
+        self.assertEqual(ns["__after"], "after")
+
+    def test_no_leaky_mangling_in_function(self):
+        ns = run_code("""
+            def f():
+                class X[T]: pass
+                _X_foo = 2
+                __foo = 1
+                assert locals()['__foo'] == 1
+                return __foo
+        """)
+        self.assertEqual(ns["f"](), 1)
+
+    def test_no_leaky_mangling_in_class(self):
+        ns = run_code("""
+            class Outer:
+                __before = "before"
+                class Inner[T]:
+                    __x = "inner"
+                __after = "after"
+        """)
+        Outer = ns["Outer"]
+        self.assertEqual(Outer._Outer__before, "before")
+        self.assertEqual(Outer.Inner._Inner__x, "inner")
+        self.assertEqual(Outer._Outer__after, "after")
+
+    def test_no_mangling_in_bases(self):
+        ns = run_code("""
+            class __Base:
+                def __init_subclass__(self, **kwargs):
+                    self.kwargs = kwargs
+
+            class Derived[T](__Base, __kwarg=1):
+                pass
+        """)
+        Derived = ns["Derived"]
+        self.assertEqual(Derived.__bases__, (ns["__Base"], Generic))
+        self.assertEqual(Derived.kwargs, {"__kwarg": 1})
+
+    def test_no_mangling_in_nested_scopes(self):
+        ns = run_code("""
+            from test.test_type_params import make_base
+
+            class __X:
+                pass
+
+            class Y[T: __X](
+                make_base(lambda: __X),
+                # doubly nested scope
+                make_base(lambda: (lambda: __X)),
+                # list comprehension
+                make_base([__X for _ in (1,)]),
+                # genexp
+                make_base(__X for _ in (1,)),
+            ):
+                pass
+        """)
+        Y = ns["Y"]
+        T, = Y.__type_params__
+        self.assertIs(T.__bound__, ns["__X"])
+        base0 = Y.__bases__[0]
+        self.assertIs(base0.__arg__(), ns["__X"])
+        base1 = Y.__bases__[1]
+        self.assertIs(base1.__arg__()(), ns["__X"])
+        base2 = Y.__bases__[2]
+        self.assertEqual(base2.__arg__, [ns["__X"]])
+        base3 = Y.__bases__[3]
+        self.assertEqual(list(base3.__arg__), [ns["__X"]])
+
+    def test_type_params_are_mangled(self):
+        ns = run_code("""
+            from test.test_type_params import make_base
+
+            class Foo[__T, __U: __T](make_base(__T), make_base(lambda: __T)):
+                param = __T
+        """)
+        Foo = ns["Foo"]
+        T, U = Foo.__type_params__
+        self.assertEqual(T.__name__, "__T")
+        self.assertEqual(U.__name__, "__U")
+        self.assertIs(U.__bound__, T)
+        self.assertIs(Foo.param, T)
+
+        base1, base2, *_ = Foo.__bases__
+        self.assertIs(base1.__arg__, T)
+        self.assertIs(base2.__arg__(), T)
+
 
 class TypeParamsComplexCallsTest(unittest.TestCase):
     def test_defaults(self):
@@ -851,6 +950,7 @@ class C[T](Base, a=1, b=2, **kwargs):
         T, = C.__type_params__
         self.assertEqual(T.__name__, "T")
         self.assertEqual(C.kwargs, {"a": 1, "b": 2, "c": 3})
+        self.assertEqual(C.__bases__, (Base, Generic))
 
         bases = (Base,)
         class C2[T](*bases, **kwargs):
@@ -859,6 +959,22 @@ class C2[T](*bases, **kwargs):
         T, = C2.__type_params__
         self.assertEqual(T.__name__, "T")
         self.assertEqual(C2.kwargs, {"c": 3})
+        self.assertEqual(C2.__bases__, (Base, Generic))
+
+    def test_starargs_base(self):
+        class C1[T](*()): pass
+
+        T, = C1.__type_params__
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(C1.__bases__, (Generic,))
+
+        class Base: pass
+        bases = [Base]
+        class C2[T](*bases): pass
+
+        T, = C2.__type_params__
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(C2.__bases__, (Base, Generic))
 
 
 class TypeParamsTraditionalTypeVarsTest(unittest.TestCase):
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
index fbca198aab5180..128b1ae05e91cc 100644
--- a/Lib/test/test_types.py
+++ b/Lib/test/test_types.py
@@ -1,6 +1,11 @@
 # Python test set -- part 6, built-in types
 
-from test.support import run_with_locale, cpython_only, MISSING_C_DOCSTRINGS
+from test.support import (
+    run_with_locale, is_apple_mobile, cpython_only,
+    iter_builtin_types, iter_slot_wrappers,
+    MISSING_C_DOCSTRINGS,
+)
+from test.test_import import no_rerun
 import collections.abc
 from collections import namedtuple, UserDict
 import copy
@@ -10,6 +15,7 @@
 import pickle
 import locale
 import sys
+import textwrap
 import types
 import unittest.mock
 import weakref
@@ -393,7 +399,7 @@ def test(i, format_spec, result):
         test(123456, "1=20", '11111111111111123456')
         test(123456, "*=20", '**************123456')
 
-    @run_with_locale('LC_NUMERIC', 'en_US.UTF8')
+    @run_with_locale('LC_NUMERIC', 'en_US.UTF8', '')
     def test_float__format__locale(self):
         # test locale support for __format__ code 'n'
 
@@ -402,7 +408,7 @@ def test_float__format__locale(self):
             self.assertEqual(locale.format_string('%g', x, grouping=True), format(x, 'n'))
             self.assertEqual(locale.format_string('%.10g', x, grouping=True), format(x, '.10n'))
 
-    @run_with_locale('LC_NUMERIC', 'en_US.UTF8')
+    @run_with_locale('LC_NUMERIC', 'en_US.UTF8', '')
     def test_int__format__locale(self):
         # test locale support for __format__ code 'n' for integers
 
@@ -2345,5 +2351,50 @@ def ex(a, /, b, *, c):
             )
 
 
+class SubinterpreterTests(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        global interpreters
+        try:
+            from test.support import interpreters
+        except ModuleNotFoundError:
+            raise unittest.SkipTest('subinterpreters required')
+        import test.support.interpreters.channels
+
+    @cpython_only
+    @no_rerun('channels (and queues) might have a refleak; see gh-122199')
+    def test_static_types_inherited_slots(self):
+        rch, sch = interpreters.channels.create()
+
+        slots = []
+        script = ''
+        for cls in iter_builtin_types():
+            for slot, own in iter_slot_wrappers(cls):
+                slots.append((cls, slot, own))
+                script += textwrap.dedent(f"""
+                    text = repr({cls.__name__}.{slot})
+                    sch.send_nowait(({cls.__name__!r}, {slot!r}, text))
+                    """)
+
+        exec(script)
+        all_expected = []
+        for cls, slot, _ in slots:
+            result = rch.recv()
+            assert result == (cls.__name__, slot, result[-1]), (cls, slot, result)
+            all_expected.append(result)
+
+        interp = interpreters.create()
+        interp.exec('from test.support import interpreters')
+        interp.prepare_main(sch=sch)
+        interp.exec(script)
+
+        for i, (cls, slot, _) in enumerate(slots):
+            with self.subTest(cls=cls, slot=slot):
+                expected = all_expected[i]
+                result = rch.recv()
+                self.assertEqual(result, expected)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index bd116bb1ab7213..89a32c7a1a0d14 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -45,7 +45,8 @@
 import weakref
 import types
 
-from test.support import captured_stderr, cpython_only, infinite_recursion
+from test.support import captured_stderr, cpython_only, infinite_recursion, requires_docstrings, import_helper
+from test.support.testcase import ExtraAssertions
 from test.typinganndata import ann_module695, mod_generics_cache, _typed_dict_helper
 
 
@@ -54,21 +55,7 @@
 CANNOT_SUBCLASS_INSTANCE = 'Cannot subclass an instance of %s'
 
 
-class BaseTestCase(TestCase):
-
-    def assertIsSubclass(self, cls, class_or_tuple, msg=None):
-        if not issubclass(cls, class_or_tuple):
-            message = '%r is not a subclass of %r' % (cls, class_or_tuple)
-            if msg is not None:
-                message += ' : %s' % msg
-            raise self.failureException(message)
-
-    def assertNotIsSubclass(self, cls, class_or_tuple, msg=None):
-        if issubclass(cls, class_or_tuple):
-            message = '%r is a subclass of %r' % (cls, class_or_tuple)
-            if msg is not None:
-                message += ' : %s' % msg
-            raise self.failureException(message)
+class BaseTestCase(TestCase, ExtraAssertions):
 
     def clear_caches(self):
         for f in typing._cleanups:
@@ -120,7 +107,7 @@ class Sub(Any): pass
 
     def test_errors(self):
         with self.assertRaises(TypeError):
-            issubclass(42, Any)
+            isinstance(42, Any)
         with self.assertRaises(TypeError):
             Any[int]  # Any is not a generic type.
 
@@ -135,6 +122,9 @@ class Something: pass
 
         class MockSomething(Something, Mock): pass
         self.assertTrue(issubclass(MockSomething, Any))
+        self.assertTrue(issubclass(MockSomething, MockSomething))
+        self.assertTrue(issubclass(MockSomething, Something))
+        self.assertTrue(issubclass(MockSomething, Mock))
         ms = MockSomething()
         self.assertIsInstance(ms, MockSomething)
         self.assertIsInstance(ms, Something)
@@ -578,6 +568,55 @@ def test_constructor(self):
         self.assertEqual(T.__name__, "T")
         self.assertEqual(T.__constraints__, ())
         self.assertIs(T.__bound__, None)
+        self.assertIs(T.__default__, typing.NoDefault)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+
+        T = TypeVar(name="T", bound=type)
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, type)
+        self.assertIs(T.__default__, typing.NoDefault)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+
+        T = TypeVar(name="T", default=())
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+        self.assertIs(T.__default__, ())
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+
+        T = TypeVar(name="T", covariant=True)
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+        self.assertIs(T.__default__, typing.NoDefault)
+        self.assertIs(T.__covariant__, True)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, False)
+
+        T = TypeVar(name="T", contravariant=True)
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+        self.assertIs(T.__default__, typing.NoDefault)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, True)
+        self.assertIs(T.__infer_variance__, False)
+
+        T = TypeVar(name="T", infer_variance=True)
+        self.assertEqual(T.__name__, "T")
+        self.assertEqual(T.__constraints__, ())
+        self.assertIs(T.__bound__, None)
+        self.assertIs(T.__default__, typing.NoDefault)
+        self.assertIs(T.__covariant__, False)
+        self.assertIs(T.__contravariant__, False)
+        self.assertIs(T.__infer_variance__, True)
 
 
 class TypeParameterDefaultsTests(BaseTestCase):
@@ -668,6 +707,23 @@ class X(Generic[*Ts, T]): ...
         with self.assertRaises(TypeError):
             class Y(Generic[*Ts_default, T]): ...
 
+    def test_allow_default_after_non_default_in_alias(self):
+        T_default = TypeVar('T_default', default=int)
+        T = TypeVar('T')
+        Ts = TypeVarTuple('Ts')
+
+        a1 = Callable[[T_default], T]
+        self.assertEqual(a1.__args__, (T_default, T))
+
+        a2 = dict[T_default, T]
+        self.assertEqual(a2.__args__, (T_default, T))
+
+        a3 = typing.Dict[T_default, T]
+        self.assertEqual(a3.__args__, (T_default, T))
+
+        a4 = Callable[*Ts, T]
+        self.assertEqual(a4.__args__, (*Ts, T))
+
     def test_paramspec_specialization(self):
         T = TypeVar("T")
         P = ParamSpec('P', default=[str, int])
@@ -1180,10 +1236,6 @@ class Gen[*Ts]: ...
 
 class TypeVarTupleTests(BaseTestCase):
 
-    def assertEndsWith(self, string, tail):
-        if not string.endswith(tail):
-            self.fail(f"String {string!r} does not end with {tail!r}")
-
     def test_name(self):
         Ts = TypeVarTuple('Ts')
         self.assertEqual(Ts.__name__, 'Ts')
@@ -1942,13 +1994,81 @@ def test_basics(self):
         u = Union[int, float]
         self.assertNotEqual(u, Union)
 
-    def test_subclass_error(self):
+    def test_union_isinstance(self):
+        self.assertTrue(isinstance(42, Union[int, str]))
+        self.assertTrue(isinstance('abc', Union[int, str]))
+        self.assertFalse(isinstance(3.14, Union[int, str]))
+        self.assertTrue(isinstance(42, Union[int, list[int]]))
+        self.assertTrue(isinstance(42, Union[int, Any]))
+
+    def test_union_isinstance_type_error(self):
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[str, list[int]])
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[list[int], int])
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[list[int], str])
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[str, Any])
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[Any, int])
+        with self.assertRaises(TypeError):
+            isinstance(42, Union[Any, str])
+
+    def test_optional_isinstance(self):
+        self.assertTrue(isinstance(42, Optional[int]))
+        self.assertTrue(isinstance(None, Optional[int]))
+        self.assertFalse(isinstance('abc', Optional[int]))
+
+    def test_optional_isinstance_type_error(self):
+        with self.assertRaises(TypeError):
+            isinstance(42, Optional[list[int]])
+        with self.assertRaises(TypeError):
+            isinstance(None, Optional[list[int]])
+        with self.assertRaises(TypeError):
+            isinstance(42, Optional[Any])
+        with self.assertRaises(TypeError):
+            isinstance(None, Optional[Any])
+
+    def test_union_issubclass(self):
+        self.assertTrue(issubclass(int, Union[int, str]))
+        self.assertTrue(issubclass(str, Union[int, str]))
+        self.assertFalse(issubclass(float, Union[int, str]))
+        self.assertTrue(issubclass(int, Union[int, list[int]]))
+        self.assertTrue(issubclass(int, Union[int, Any]))
+        self.assertFalse(issubclass(int, Union[str, Any]))
+        self.assertTrue(issubclass(int, Union[Any, int]))
+        self.assertFalse(issubclass(int, Union[Any, str]))
+
+    def test_union_issubclass_type_error(self):
         with self.assertRaises(TypeError):
             issubclass(int, Union)
         with self.assertRaises(TypeError):
             issubclass(Union, int)
         with self.assertRaises(TypeError):
             issubclass(Union[int, str], int)
+        with self.assertRaises(TypeError):
+            issubclass(int, Union[str, list[int]])
+        with self.assertRaises(TypeError):
+            issubclass(int, Union[list[int], int])
+        with self.assertRaises(TypeError):
+            issubclass(int, Union[list[int], str])
+
+    def test_optional_issubclass(self):
+        self.assertTrue(issubclass(int, Optional[int]))
+        self.assertTrue(issubclass(type(None), Optional[int]))
+        self.assertFalse(issubclass(str, Optional[int]))
+        self.assertTrue(issubclass(Any, Optional[Any]))
+        self.assertTrue(issubclass(type(None), Optional[Any]))
+        self.assertFalse(issubclass(int, Optional[Any]))
+
+    def test_optional_issubclass_type_error(self):
+        with self.assertRaises(TypeError):
+            issubclass(list[int], Optional[list[int]])
+        with self.assertRaises(TypeError):
+            issubclass(type(None), Optional[list[int]])
+        with self.assertRaises(TypeError):
+            issubclass(int, Optional[list[int]])
 
     def test_union_any(self):
         u = Union[Any]
@@ -4188,6 +4308,9 @@ class CustomProtocol(TestCase, Protocol):
         class CustomContextManager(typing.ContextManager, Protocol):
             pass
 
+        class CustomAsyncIterator(typing.AsyncIterator, Protocol):
+            pass
+
     def test_non_runtime_protocol_isinstance_check(self):
         class P(Protocol):
             x: int
@@ -4841,20 +4964,30 @@ def f(x: X): ...
             {'x': list[list[ForwardRef('X')]]}
         )
 
-    def test_pep695_generic_with_future_annotations(self):
+    def test_pep695_generic_class_with_future_annotations(self):
+        original_globals = dict(ann_module695.__dict__)
+
         hints_for_A = get_type_hints(ann_module695.A)
         A_type_params = ann_module695.A.__type_params__
         self.assertIs(hints_for_A["x"], A_type_params[0])
         self.assertEqual(hints_for_A["y"].__args__[0], Unpack[A_type_params[1]])
         self.assertIs(hints_for_A["z"].__args__[0], A_type_params[2])
 
+        # should not have changed as a result of the get_type_hints() calls!
+        self.assertEqual(ann_module695.__dict__, original_globals)
+
+    def test_pep695_generic_class_with_future_annotations_and_local_shadowing(self):
         hints_for_B = get_type_hints(ann_module695.B)
-        self.assertEqual(hints_for_B.keys(), {"x", "y", "z"})
+        self.assertEqual(hints_for_B, {"x": int, "y": str, "z": bytes})
+
+    def test_pep695_generic_class_with_future_annotations_name_clash_with_global_vars(self):
+        hints_for_C = get_type_hints(ann_module695.C)
         self.assertEqual(
-            set(hints_for_B.values()) ^ set(ann_module695.B.__type_params__),
-            set()
+            set(hints_for_C.values()),
+            set(ann_module695.C.__type_params__)
         )
 
+    def test_pep_695_generic_function_with_future_annotations(self):
         hints_for_generic_function = get_type_hints(ann_module695.generic_function)
         func_t_params = ann_module695.generic_function.__type_params__
         self.assertEqual(
@@ -4865,6 +4998,54 @@ def test_pep695_generic_with_future_annotations(self):
         self.assertIs(hints_for_generic_function["z"].__origin__, func_t_params[2])
         self.assertIs(hints_for_generic_function["zz"].__origin__, func_t_params[2])
 
+    def test_pep_695_generic_function_with_future_annotations_name_clash_with_global_vars(self):
+        self.assertEqual(
+            set(get_type_hints(ann_module695.generic_function_2).values()),
+            set(ann_module695.generic_function_2.__type_params__)
+        )
+
+    def test_pep_695_generic_method_with_future_annotations(self):
+        hints_for_generic_method = get_type_hints(ann_module695.D.generic_method)
+        params = {
+            param.__name__: param
+            for param in ann_module695.D.generic_method.__type_params__
+        }
+        self.assertEqual(
+            hints_for_generic_method,
+            {"x": params["Foo"], "y": params["Bar"], "return": types.NoneType}
+        )
+
+    def test_pep_695_generic_method_with_future_annotations_name_clash_with_global_vars(self):
+        self.assertEqual(
+            set(get_type_hints(ann_module695.D.generic_method_2).values()),
+            set(ann_module695.D.generic_method_2.__type_params__)
+        )
+
+    def test_pep_695_generics_with_future_annotations_nested_in_function(self):
+        results = ann_module695.nested()
+
+        self.assertEqual(
+            set(results.hints_for_E.values()),
+            set(results.E.__type_params__)
+        )
+        self.assertEqual(
+            set(results.hints_for_E_meth.values()),
+            set(results.E.generic_method.__type_params__)
+        )
+        self.assertNotEqual(
+            set(results.hints_for_E_meth.values()),
+            set(results.E.__type_params__)
+        )
+        self.assertEqual(
+            set(results.hints_for_E_meth.values()).intersection(results.E.__type_params__),
+            set()
+        )
+
+        self.assertEqual(
+            set(results.hints_for_generic_func.values()),
+            set(results.generic_func.__type_params__)
+        )
+
     def test_extended_generic_rules_subclassing(self):
         class T1(Tuple[T, KT]): ...
         class T2(Tuple[T, ...]): ...
@@ -4979,6 +5160,18 @@ class C(B[int]):
                 x = pickle.loads(z)
                 self.assertEqual(s, x)
 
+        # Test ParamSpec args and kwargs
+        global PP
+        PP = ParamSpec('PP')
+        for thing in [PP.args, PP.kwargs]:
+            for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+                with self.subTest(thing=thing, proto=proto):
+                    self.assertEqual(
+                        pickle.loads(pickle.dumps(thing, proto)),
+                        thing,
+                    )
+        del PP
+
     def test_copy_and_deepcopy(self):
         T = TypeVar('T')
         class Node(Generic[T]): ...
@@ -6308,6 +6501,8 @@ def test_or(self):
         self.assertEqual(X | "x", Union[X, "x"])
         self.assertEqual("x" | X, Union["x", X])
 
+
+class InternalsTests(BaseTestCase):
     def test_deprecation_for_no_type_params_passed_to__evaluate(self):
         with self.assertWarnsRegex(
             DeprecationWarning,
@@ -6333,6 +6528,15 @@ def test_deprecation_for_no_type_params_passed_to__evaluate(self):
 
         self.assertEqual(cm.filename, __file__)
 
+    def test_collect_parameters(self):
+        typing = import_helper.import_fresh_module("typing")
+        with self.assertWarnsRegex(
+            DeprecationWarning,
+            "The private _collect_parameters function is deprecated"
+        ) as cm:
+            typing._collect_parameters
+        self.assertEqual(cm.filename, __file__)
+
 
 @lru_cache()
 def cached_func(x, y):
@@ -7032,24 +7236,16 @@ def test_iterator(self):
         self.assertNotIsInstance(42, typing.Iterator)
 
     def test_awaitable(self):
-        ns = {}
-        exec(
-            "async def foo() -> typing.Awaitable[int]:\n"
-            "    return await AwaitableWrapper(42)\n",
-            globals(), ns)
-        foo = ns['foo']
+        async def foo() -> typing.Awaitable[int]:
+            return await AwaitableWrapper(42)
         g = foo()
         self.assertIsInstance(g, typing.Awaitable)
         self.assertNotIsInstance(foo, typing.Awaitable)
         g.send(None)  # Run foo() till completion, to avoid warning.
 
     def test_coroutine(self):
-        ns = {}
-        exec(
-            "async def foo():\n"
-            "    return\n",
-            globals(), ns)
-        foo = ns['foo']
+        async def foo():
+            return
         g = foo()
         self.assertIsInstance(g, typing.Coroutine)
         with self.assertRaises(TypeError):
@@ -7334,10 +7530,9 @@ def test_no_generator_instantiation(self):
             typing.Generator[int, int, int]()
 
     def test_async_generator(self):
-        ns = {}
-        exec("async def f():\n"
-             "    yield 42\n", globals(), ns)
-        g = ns['f']()
+        async def f():
+             yield 42
+        g = f()
         self.assertIsSubclass(type(g), typing.AsyncGenerator)
 
     def test_no_async_generator_instantiation(self):
@@ -7424,9 +7619,8 @@ def asend(self, value):
             def athrow(self, typ, val=None, tb=None):
                 pass
 
-        ns = {}
-        exec('async def g(): yield 0', globals(), ns)
-        g = ns['g']
+        async def g(): yield 0
+
         self.assertIsSubclass(G, typing.AsyncGenerator)
         self.assertIsSubclass(G, typing.AsyncIterable)
         self.assertIsSubclass(G, collections.abc.AsyncGenerator)
@@ -8630,13 +8824,13 @@ class Child1(Base1):
         self.assertEqual(Child1.__mutable_keys__, frozenset({'b'}))
 
         class Base2(TypedDict):
-            a: ReadOnly[int]
+            a: int
 
         class Child2(Base2):
-            b: str
+            b: ReadOnly[str]
 
-        self.assertEqual(Child1.__readonly_keys__, frozenset({'a'}))
-        self.assertEqual(Child1.__mutable_keys__, frozenset({'b'}))
+        self.assertEqual(Child2.__readonly_keys__, frozenset({'b'}))
+        self.assertEqual(Child2.__mutable_keys__, frozenset({'a'}))
 
     def test_cannot_make_mutable_key_readonly(self):
         class Base(TypedDict):
@@ -9799,6 +9993,18 @@ def test_valid_uses(self):
         self.assertEqual(C4.__args__, (Concatenate[int, T, P], T))
         self.assertEqual(C4.__parameters__, (T, P))
 
+    def test_invalid_uses(self):
+        with self.assertRaisesRegex(TypeError, 'Concatenate of no types'):
+            Concatenate[()]
+        with self.assertRaisesRegex(
+            TypeError,
+            (
+                'The last parameter to Concatenate should be a '
+                'ParamSpec variable or ellipsis'
+            ),
+        ):
+            Concatenate[int]
+
     def test_var_substitution(self):
         T = TypeVar('T')
         P = ParamSpec('P')
@@ -10230,15 +10436,34 @@ def test_pickling(self):
     def test_constructor(self):
         self.assertIs(NoDefault, type(NoDefault)())
         with self.assertRaises(TypeError):
-            NoDefault(1)
+            type(NoDefault)(1)
 
     def test_repr(self):
         self.assertEqual(repr(NoDefault), 'typing.NoDefault')
 
+    @requires_docstrings
+    def test_doc(self):
+        self.assertIsInstance(NoDefault.__doc__, str)
+
+    def test_class(self):
+        self.assertIs(NoDefault.__class__, type(NoDefault))
+
     def test_no_call(self):
         with self.assertRaises(TypeError):
             NoDefault()
 
+    def test_no_attributes(self):
+        with self.assertRaises(AttributeError):
+            NoDefault.foo = 3
+        with self.assertRaises(AttributeError):
+            NoDefault.foo
+
+        # TypeError is consistent with the behavior of NoneType
+        with self.assertRaises(TypeError):
+            type(NoDefault).foo = 3
+        with self.assertRaises(AttributeError):
+            type(NoDefault).foo
+
 
 class AllTests(BaseTestCase):
     """Tests for __all__."""
diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index d3bf4ea7c7d437..2cf367a2cfe85b 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -11,8 +11,14 @@
 import sys
 import unicodedata
 import unittest
-from test.support import (open_urlresource, requires_resource, script_helper,
-                          cpython_only, check_disallow_instantiation)
+from test.support import (
+    open_urlresource,
+    requires_resource,
+    script_helper,
+    cpython_only,
+    check_disallow_instantiation,
+    force_not_colorized,
+)
 
 
 class UnicodeMethodsTest(unittest.TestCase):
@@ -277,6 +283,7 @@ def test_disallow_instantiation(self):
         # Ensure that the type disallows instantiation (bpo-43916)
         check_disallow_instantiation(self, unicodedata.UCD)
 
+    @force_not_colorized
     def test_failed_import_during_compiling(self):
         # Issue 4367
         # Decoding \N escapes requires the unicodedata module. If it can't be
diff --git a/Lib/test/test_unittest/test_case.py b/Lib/test/test_unittest/test_case.py
index ed5eb5609a5dd1..82a442a04e635e 100644
--- a/Lib/test/test_unittest/test_case.py
+++ b/Lib/test/test_unittest/test_case.py
@@ -1132,6 +1132,8 @@ def testAssertMultiLineEqual(self):
             # need to remove the first line of the error message
             error = str(e).split('\n', 1)[1]
             self.assertEqual(sample_text_error, error)
+        else:
+            self.fail(f'{self.failureException} not raised')
 
     def testAssertEqualSingleLine(self):
         sample_text = "laden swallows fly slowly"
@@ -1148,6 +1150,8 @@ def testAssertEqualSingleLine(self):
             # need to remove the first line of the error message
             error = str(e).split('\n', 1)[1]
             self.assertEqual(sample_text_error, error)
+        else:
+            self.fail(f'{self.failureException} not raised')
 
     def testAssertEqualwithEmptyString(self):
         '''Verify when there is an empty string involved, the diff output
@@ -1165,6 +1169,8 @@ def testAssertEqualwithEmptyString(self):
             # need to remove the first line of the error message
             error = str(e).split('\n', 1)[1]
             self.assertEqual(sample_text_error, error)
+        else:
+            self.fail(f'{self.failureException} not raised')
 
     def testAssertEqualMultipleLinesMissingNewlineTerminator(self):
         '''Verifying format of diff output from assertEqual involving strings
@@ -1185,6 +1191,8 @@ def testAssertEqualMultipleLinesMissingNewlineTerminator(self):
             # need to remove the first line of the error message
             error = str(e).split('\n', 1)[1]
             self.assertEqual(sample_text_error, error)
+        else:
+            self.fail(f'{self.failureException} not raised')
 
     def testAssertEqualMultipleLinesMismatchedNewlinesTerminators(self):
         '''Verifying format of diff output from assertEqual involving strings
@@ -1208,6 +1216,8 @@ def testAssertEqualMultipleLinesMismatchedNewlinesTerminators(self):
             # need to remove the first line of the error message
             error = str(e).split('\n', 1)[1]
             self.assertEqual(sample_text_error, error)
+        else:
+            self.fail(f'{self.failureException} not raised')
 
     def testEqualityBytesWarning(self):
         if sys.flags.bytes_warning:
diff --git a/Lib/test/test_unittest/test_program.py b/Lib/test/test_unittest/test_program.py
index 7241cf59f73d4f..aa7e8b712fd763 100644
--- a/Lib/test/test_unittest/test_program.py
+++ b/Lib/test/test_unittest/test_program.py
@@ -7,6 +7,7 @@
 from test.test_unittest.test_result import BufferedWriter
 
 
+@support.force_not_colorized_test_class
 class Test_TestProgram(unittest.TestCase):
 
     def test_discovery_from_dotted_path(self):
diff --git a/Lib/test/test_unittest/test_result.py b/Lib/test/test_unittest/test_result.py
index 15e3f62ef66a4b..4d552d54e9a6df 100644
--- a/Lib/test/test_unittest/test_result.py
+++ b/Lib/test/test_unittest/test_result.py
@@ -1,12 +1,11 @@
 import io
 import sys
 import textwrap
-
-from test.support import warnings_helper, captured_stdout
-
 import traceback
 import unittest
 from unittest.util import strclass
+from test.support import warnings_helper
+from test.support import captured_stdout, force_not_colorized_test_class
 from test.test_unittest.support import BufferedWriter
 
 
@@ -34,6 +33,7 @@ def bad_cleanup2():
     raise ValueError('bad cleanup2')
 
 
+@force_not_colorized_test_class
 class Test_TestResult(unittest.TestCase):
     # Note: there are not separate tests for TestResult.wasSuccessful(),
     # TestResult.errors, TestResult.failures, TestResult.testsRun or
@@ -457,6 +457,7 @@ def test(result):
         self.assertTrue(stream.getvalue().endswith('\n\nOK\n'))
 
 
+@force_not_colorized_test_class
 class Test_TextTestResult(unittest.TestCase):
     maxDiff = None
 
@@ -758,6 +759,7 @@ def testFoo(self):
         runner.run(Test('testFoo'))
 
 
+@force_not_colorized_test_class
 class TestOutputBuffering(unittest.TestCase):
 
     def setUp(self):
diff --git a/Lib/test/test_unittest/test_runner.py b/Lib/test/test_unittest/test_runner.py
index 1b9cef43e3f9c5..4d3cfd60b8d9c3 100644
--- a/Lib/test/test_unittest/test_runner.py
+++ b/Lib/test/test_unittest/test_runner.py
@@ -106,6 +106,7 @@ def cleanup2(*args, **kwargs):
         self.assertTrue(test.doCleanups())
         self.assertEqual(cleanups, [(2, (), {}), (1, (1, 2, 3), dict(four='hello', five='goodbye'))])
 
+    @support.force_not_colorized
     def testCleanUpWithErrors(self):
         class TestableTest(unittest.TestCase):
             def testNothing(self):
@@ -249,6 +250,7 @@ def testNothing(self):
         self.assertEqual(test._cleanups, [])
 
 
+@support.force_not_colorized_test_class
 class TestClassCleanup(unittest.TestCase):
     def test_addClassCleanUp(self):
         class TestableTest(unittest.TestCase):
@@ -601,6 +603,7 @@ class EmptyTest(unittest.TestCase):
         self.assertIn("\nNO TESTS RAN\n", runner.stream.getvalue())
 
 
+@support.force_not_colorized_test_class
 class TestModuleCleanUp(unittest.TestCase):
     def test_add_and_do_ModuleCleanup(self):
         module_cleanups = []
@@ -1318,6 +1321,7 @@ def MockResultClass(*args):
         expectedresult = (runner.stream, DESCRIPTIONS, VERBOSITY)
         self.assertEqual(runner._makeResult(), expectedresult)
 
+    @support.force_not_colorized
     @support.requires_subprocess()
     def test_warnings(self):
         """
diff --git a/Lib/test/test_unittest/test_util.py b/Lib/test/test_unittest/test_util.py
new file mode 100644
index 00000000000000..d590a333930278
--- /dev/null
+++ b/Lib/test/test_unittest/test_util.py
@@ -0,0 +1,33 @@
+import unittest
+from unittest.util import safe_repr, sorted_list_difference, unorderable_list_difference
+
+
+class TestUtil(unittest.TestCase):
+    def test_safe_repr(self):
+        class RaisingRepr:
+            def __repr__(self):
+                raise ValueError("Invalid repr()")
+
+        class LongRepr:
+            def __repr__(self):
+                return 'x' * 100
+
+        safe_repr(RaisingRepr())
+        self.assertEqual(safe_repr('foo'), "'foo'")
+        self.assertEqual(safe_repr(LongRepr(), short=True), 'x'*80 + ' [truncated]...')
+
+    def test_sorted_list_difference(self):
+        self.assertEqual(sorted_list_difference([], []), ([], []))
+        self.assertEqual(sorted_list_difference([1, 2], [2, 3]), ([1], [3]))
+        self.assertEqual(sorted_list_difference([1, 2], [1, 3]), ([2], [3]))
+        self.assertEqual(sorted_list_difference([1, 1, 1], [1, 2, 3]), ([], [2, 3]))
+        self.assertEqual(sorted_list_difference([4], [1, 2, 3, 4]), ([], [1, 2, 3]))
+        self.assertEqual(sorted_list_difference([1, 1], [2]), ([1], [2]))
+        self.assertEqual(sorted_list_difference([2], [1, 1]), ([2], [1]))
+        self.assertEqual(sorted_list_difference([1, 2], [1, 1]), ([2], []))
+
+    def test_unorderable_list_difference(self):
+        self.assertEqual(unorderable_list_difference([], []), ([], []))
+        self.assertEqual(unorderable_list_difference([1, 2], []), ([2, 1], []))
+        self.assertEqual(unorderable_list_difference([], [1, 2]), ([], [1, 2]))
+        self.assertEqual(unorderable_list_difference([1, 2], [1, 3]), ([2], [3]))
diff --git a/Lib/test/test_unittest/testmock/support.py b/Lib/test/test_unittest/testmock/support.py
index 49986d65dc47af..6c535b7944f261 100644
--- a/Lib/test/test_unittest/testmock/support.py
+++ b/Lib/test/test_unittest/testmock/support.py
@@ -14,3 +14,14 @@ def wibble(self): pass
 
 class X(object):
     pass
+
+# A standin for weurkzeug.local.LocalProxy - issue 119600
+def _inaccessible(*args, **kwargs):
+    raise AttributeError
+
+
+class OpaqueProxy:
+    __getattribute__ = _inaccessible
+
+
+g = OpaqueProxy()
diff --git a/Lib/test/test_unittest/testmock/testhelpers.py b/Lib/test/test_unittest/testmock/testhelpers.py
index 74785a83757a92..c9c20f008ca5a2 100644
--- a/Lib/test/test_unittest/testmock/testhelpers.py
+++ b/Lib/test/test_unittest/testmock/testhelpers.py
@@ -1127,6 +1127,14 @@ def test_propertymock_side_effect(self):
         p.assert_called_once_with()
 
 
+    def test_propertymock_attach(self):
+        m = Mock()
+        p = PropertyMock()
+        type(m).foo = p
+        m.attach_mock(p, 'foo')
+        self.assertEqual(m.mock_calls, [])
+
+
 class TestCallablePredicate(unittest.TestCase):
 
     def test_type(self):
diff --git a/Lib/test/test_unittest/testmock/testmagicmethods.py b/Lib/test/test_unittest/testmock/testmagicmethods.py
index a4feae7e9d3b73..a8b52ce48716f7 100644
--- a/Lib/test/test_unittest/testmock/testmagicmethods.py
+++ b/Lib/test/test_unittest/testmock/testmagicmethods.py
@@ -331,6 +331,45 @@ def test_magic_methods_fspath(self):
         self.assertEqual(os.fspath(mock), expected_path)
         mock.__fspath__.assert_called_once()
 
+    def test_magic_mock_does_not_reset_magic_returns(self):
+        # https://github.com/python/cpython/issues/123934
+        for reset in (True, False):
+            with self.subTest(reset=reset):
+                mm = MagicMock()
+                self.assertIs(type(mm.__str__()), str)
+                mm.__str__.assert_called_once()
+
+                self.assertIs(type(mm.__hash__()), int)
+                mm.__hash__.assert_called_once()
+
+                for _ in range(3):
+                    # Repeat reset several times to be sure:
+                    mm.reset_mock(return_value=reset)
+
+                    self.assertIs(type(mm.__str__()), str)
+                    mm.__str__.assert_called_once()
+
+                    self.assertIs(type(mm.__hash__()), int)
+                    mm.__hash__.assert_called_once()
+
+    def test_magic_mock_resets_manual_mocks(self):
+        mm = MagicMock()
+        mm.__iter__ = MagicMock(return_value=iter([1]))
+        mm.custom = MagicMock(return_value=2)
+        self.assertEqual(list(iter(mm)), [1])
+        self.assertEqual(mm.custom(), 2)
+
+        mm.reset_mock(return_value=True)
+        self.assertEqual(list(iter(mm)), [])
+        self.assertIsInstance(mm.custom(), MagicMock)
+
+    def test_magic_mock_resets_manual_mocks_empty_iter(self):
+        mm = MagicMock()
+        mm.__iter__.return_value = []
+        self.assertEqual(list(iter(mm)), [])
+
+        mm.reset_mock(return_value=True)
+        self.assertEqual(list(iter(mm)), [])
 
     def test_magic_methods_and_spec(self):
         class Iterable(object):
diff --git a/Lib/test/test_unittest/testmock/testmock.py b/Lib/test/test_unittest/testmock/testmock.py
index 77f6f1eb4b76b9..e1b108f81e513c 100644
--- a/Lib/test/test_unittest/testmock/testmock.py
+++ b/Lib/test/test_unittest/testmock/testmock.py
@@ -129,6 +129,11 @@ def test_create_autospec_should_be_configurable_by_kwargs(self):
         # pass kwargs with respect to the parent mock.
         self.assertEqual(class_mock().return_value.meth.side_effect, None)
 
+    def test_create_autospec_correctly_handles_name(self):
+        class X: ...
+        mock = create_autospec(X, spec_set=True, name="Y")
+        self.assertEqual(mock._mock_name, "Y")
+
     def test_repr(self):
         mock = Mock(name='foo')
         self.assertIn('foo', repr(mock))
diff --git a/Lib/test/test_unittest/testmock/testpatch.py b/Lib/test/test_unittest/testmock/testpatch.py
index be75fda7826af1..037c021e6eafcf 100644
--- a/Lib/test/test_unittest/testmock/testpatch.py
+++ b/Lib/test/test_unittest/testmock/testpatch.py
@@ -745,6 +745,54 @@ def test_stop_idempotent(self):
         self.assertIsNone(patcher.stop())
 
 
+    def test_exit_idempotent(self):
+        patcher = patch(foo_name, 'bar', 3)
+        with patcher:
+            patcher.stop()
+
+
+    def test_second_start_failure(self):
+        patcher = patch(foo_name, 'bar', 3)
+        patcher.start()
+        try:
+            self.assertRaises(RuntimeError, patcher.start)
+        finally:
+            patcher.stop()
+
+
+    def test_second_enter_failure(self):
+        patcher = patch(foo_name, 'bar', 3)
+        with patcher:
+            self.assertRaises(RuntimeError, patcher.start)
+
+
+    def test_second_start_after_stop(self):
+        patcher = patch(foo_name, 'bar', 3)
+        patcher.start()
+        patcher.stop()
+        patcher.start()
+        patcher.stop()
+
+
+    def test_property_setters(self):
+        mock_object = Mock()
+        mock_bar = mock_object.bar
+        patcher = patch.object(mock_object, 'bar', 'x')
+        with patcher:
+            self.assertEqual(patcher.is_local, False)
+            self.assertIs(patcher.target, mock_object)
+            self.assertEqual(patcher.temp_original, mock_bar)
+            patcher.is_local = True
+            patcher.target = mock_bar
+            patcher.temp_original = mock_object
+            self.assertEqual(patcher.is_local, True)
+            self.assertIs(patcher.target, mock_bar)
+            self.assertEqual(patcher.temp_original, mock_object)
+        # if changes are left intact, they may lead to disruption as shown below (it might be what someone needs though)
+        self.assertEqual(mock_bar.bar, mock_object)
+        self.assertEqual(mock_object.bar, 'x')
+
+
     def test_patchobject_start_stop(self):
         original = something
         patcher = patch.object(PTModule, 'something', 'foo')
@@ -1098,7 +1146,7 @@ def test_new_callable_patch(self):
 
         self.assertIsNot(m1, m2)
         for mock in m1, m2:
-            self.assertNotCallable(m1)
+            self.assertNotCallable(mock)
 
 
     def test_new_callable_patch_object(self):
@@ -1111,7 +1159,7 @@ def test_new_callable_patch_object(self):
 
         self.assertIsNot(m1, m2)
         for mock in m1, m2:
-            self.assertNotCallable(m1)
+            self.assertNotCallable(mock)
 
 
     def test_new_callable_keyword_arguments(self):
@@ -2045,6 +2093,13 @@ def test(): pass
         with self.assertRaises(TypeError):
             test()
 
+    def test_patch_proxy_object(self):
+        @patch("test.test_unittest.testmock.support.g", new_callable=MagicMock())
+        def test(_):
+            pass
+
+        test()
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_unpack_ex.py b/Lib/test/test_unpack_ex.py
index c201d08f61b8cd..9e2d54bd3a8c4e 100644
--- a/Lib/test/test_unpack_ex.py
+++ b/Lib/test/test_unpack_ex.py
@@ -26,6 +26,12 @@
     >>> a == [7, 8, 9]
     True
 
+Unpack nested implied tuple
+
+    >>> [*[*a]] = [[7,8,9]]
+    >>> a == [[7,8,9]]
+    True
+
 Unpack string... fun!
 
     >>> a, *b = 'one'
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index 6bb0fb303fa202..fbdb8548e1ad4f 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -19,7 +19,6 @@
     ssl = None
 import sys
 import tempfile
-from nturl2path import url2pathname, pathname2url
 
 from base64 import b64encode
 import collections
@@ -477,7 +476,9 @@ def test_read_bogus(self):
 Content-Type: text/html; charset=iso-8859-1
 ''', mock_close=True)
         try:
-            self.assertRaises(OSError, urlopen, "http://python.org/")
+            with self.assertRaises(urllib.error.HTTPError) as cm:
+                urllib.request.urlopen("http://python.org/")
+            cm.exception.close()
         finally:
             self.unfakehttp()
 
@@ -492,8 +493,9 @@ def test_invalid_redirect(self):
 ''', mock_close=True)
         try:
             msg = "Redirection to url 'file:"
-            with self.assertRaisesRegex(urllib.error.HTTPError, msg):
-                urlopen("http://python.org/")
+            with self.assertRaisesRegex(urllib.error.HTTPError, msg) as cm:
+                urllib.request.urlopen("http://python.org/")
+            cm.exception.close()
         finally:
             self.unfakehttp()
 
@@ -506,8 +508,9 @@ def test_redirect_limit_independent(self):
 Connection: close
 ''', mock_close=True)
             try:
-                self.assertRaises(urllib.error.HTTPError, urlopen,
-                    "http://something")
+                with self.assertRaises(urllib.error.HTTPError) as cm:
+                    urllib.request.urlopen("http://something")
+                cm.exception.close()
             finally:
                 self.unfakehttp()
 
@@ -627,10 +630,11 @@ def setUp(self):
             "QOjdAAAAAXNSR0IArs4c6QAAAA9JREFUCNdj%0AYGBg%2BP//PwAGAQL%2BCm8 "
             "vHgAAAABJRU5ErkJggg%3D%3D%0A%20")
 
-        self.text_url_resp = urllib.request.urlopen(self.text_url)
-        self.text_url_base64_resp = urllib.request.urlopen(
-            self.text_url_base64)
-        self.image_url_resp = urllib.request.urlopen(self.image_url)
+        self.text_url_resp = self.enterContext(
+            urllib.request.urlopen(self.text_url))
+        self.text_url_base64_resp = self.enterContext(
+            urllib.request.urlopen(self.text_url_base64))
+        self.image_url_resp = self.enterContext(urllib.request.urlopen(self.image_url))
 
     def test_interface(self):
         # Make sure object returned by urlopen() has the specified methods
@@ -646,8 +650,10 @@ def test_info(self):
             [('text/plain', ''), ('charset', 'ISO-8859-1')])
         self.assertEqual(self.image_url_resp.info()['content-length'],
             str(len(self.image)))
-        self.assertEqual(urllib.request.urlopen("data:,").info().get_params(),
+        r = urllib.request.urlopen("data:,")
+        self.assertEqual(r.info().get_params(),
             [('text/plain', ''), ('charset', 'US-ASCII')])
+        r.close()
 
     def test_geturl(self):
         self.assertEqual(self.text_url_resp.geturl(), self.text_url)
@@ -710,10 +716,6 @@ def tearDown(self):
 
     def constructLocalFileUrl(self, filePath):
         filePath = os.path.abspath(filePath)
-        try:
-            filePath.encode("utf-8")
-        except UnicodeEncodeError:
-            raise unittest.SkipTest("filePath is not encodable to utf8")
         return "file://%s" % urllib.request.pathname2url(filePath)
 
     def createNewTempFile(self, data=b""):
@@ -1520,39 +1522,119 @@ def test_quoting(self):
                          (expect, result))
 
     @unittest.skipUnless(sys.platform == 'win32',
-                         'test specific to the nturl2path functions.')
-    def test_prefixes(self):
+                         'test specific to Windows pathnames.')
+    def test_pathname2url_win(self):
         # Test special prefixes are correctly handled in pathname2url()
-        given = '\\\\?\\C:\\dir'
-        expect = '///C:/dir'
-        result = urllib.request.pathname2url(given)
-        self.assertEqual(expect, result,
-                         "pathname2url() failed; %s != %s" %
-                         (expect, result))
-        given = '\\\\?\\unc\\server\\share\\dir'
-        expect = '/server/share/dir'
-        result = urllib.request.pathname2url(given)
-        self.assertEqual(expect, result,
-                         "pathname2url() failed; %s != %s" %
-                         (expect, result))
-
+        fn = urllib.request.pathname2url
+        self.assertEqual(fn('\\\\?\\C:\\dir'), '///C:/dir')
+        self.assertEqual(fn('\\\\?\\unc\\server\\share\\dir'), '//server/share/dir')
+        self.assertEqual(fn("C:"), '///C:')
+        self.assertEqual(fn("C:\\"), '///C:/')
+        self.assertEqual(fn('C:\\a\\b.c'), '///C:/a/b.c')
+        self.assertEqual(fn('C:\\a\\b.c\\'), '///C:/a/b.c/')
+        self.assertEqual(fn('C:\\a\\\\b.c'), '///C:/a//b.c')
+        self.assertEqual(fn('C:\\a\\b%#c'), '///C:/a/b%25%23c')
+        self.assertEqual(fn('C:\\a\\b\xe9'), '///C:/a/b%C3%A9')
+        self.assertEqual(fn('C:\\foo\\bar\\spam.foo'), "///C:/foo/bar/spam.foo")
+        # Long drive letter
+        self.assertRaises(IOError, fn, "XX:\\")
+        # No drive letter
+        self.assertEqual(fn("\\folder\\test\\"), '/folder/test/')
+        self.assertEqual(fn("\\\\folder\\test\\"), '//folder/test/')
+        self.assertEqual(fn("\\\\\\folder\\test\\"), '///folder/test/')
+        self.assertEqual(fn('\\\\some\\share\\'), '//some/share/')
+        self.assertEqual(fn('\\\\some\\share\\a\\b.c'), '//some/share/a/b.c')
+        self.assertEqual(fn('\\\\some\\share\\a\\b%#c\xe9'), '//some/share/a/b%25%23c%C3%A9')
+        # Alternate path separator
+        self.assertEqual(fn('C:/a/b.c'), '///C:/a/b.c')
+        self.assertEqual(fn('//some/share/a/b.c'), '//some/share/a/b.c')
+        self.assertEqual(fn('//?/C:/dir'), '///C:/dir')
+        self.assertEqual(fn('//?/unc/server/share/dir'), '//server/share/dir')
+        # Round-tripping
+        urls = ['///C:',
+                '/folder/test/',
+                '///C:/foo/bar/spam.foo']
+        for url in urls:
+            self.assertEqual(fn(urllib.request.url2pathname(url)), url)
+
+    @unittest.skipIf(sys.platform == 'win32',
+                     'test specific to POSIX pathnames')
+    def test_pathname2url_posix(self):
+        fn = urllib.request.pathname2url
+        self.assertEqual(fn('/'), '/')
+        self.assertEqual(fn('/a/b.c'), '/a/b.c')
+        self.assertEqual(fn('//a/b.c'), '////a/b.c')
+        self.assertEqual(fn('///a/b.c'), '/////a/b.c')
+        self.assertEqual(fn('////a/b.c'), '//////a/b.c')
+        self.assertEqual(fn('/a/b%#c'), '/a/b%25%23c')
+
+    @unittest.skipUnless(os_helper.FS_NONASCII, 'need os_helper.FS_NONASCII')
+    def test_pathname2url_nonascii(self):
+        encoding = sys.getfilesystemencoding()
+        errors = sys.getfilesystemencodeerrors()
+        url = urllib.parse.quote(os_helper.FS_NONASCII, encoding=encoding, errors=errors)
+        self.assertEqual(urllib.request.pathname2url(os_helper.FS_NONASCII), url)
 
     @unittest.skipUnless(sys.platform == 'win32',
-                         'test specific to the urllib.url2path function.')
-    def test_ntpath(self):
-        given = ('/C:/', '///C:/', '/C|//')
-        expect = 'C:\\'
-        for url in given:
-            result = urllib.request.url2pathname(url)
-            self.assertEqual(expect, result,
-                             'urllib.request..url2pathname() failed; %s != %s' %
-                             (expect, result))
-        given = '///C|/path'
-        expect = 'C:\\path'
-        result = urllib.request.url2pathname(given)
-        self.assertEqual(expect, result,
-                         'urllib.request.url2pathname() failed; %s != %s' %
-                         (expect, result))
+                         'test specific to Windows pathnames.')
+    def test_url2pathname_win(self):
+        fn = urllib.request.url2pathname
+        self.assertEqual(fn('/C:/'), 'C:\\')
+        self.assertEqual(fn("///C|"), 'C:')
+        self.assertEqual(fn("///C:"), 'C:')
+        self.assertEqual(fn('///C:/'), 'C:\\')
+        self.assertEqual(fn('/C|//'), 'C:\\\\')
+        self.assertEqual(fn('///C|/path'), 'C:\\path')
+        # No DOS drive
+        self.assertEqual(fn("///C/test/"), '\\C\\test\\')
+        self.assertEqual(fn("////C/test/"), '\\\\C\\test\\')
+        # DOS drive paths
+        self.assertEqual(fn('C:/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn('C:/path/to/file/'), 'C:\\path\\to\\file\\')
+        self.assertEqual(fn('C:/path/to//file'), 'C:\\path\\to\\\\file')
+        self.assertEqual(fn('C|/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn('/C|/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn('///C|/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn("///C|/foo/bar/spam.foo"), 'C:\\foo\\bar\\spam.foo')
+        # Non-ASCII drive letter
+        self.assertRaises(IOError, fn, "///\u00e8|/")
+        # UNC paths
+        self.assertEqual(fn('//server/path/to/file'), '\\\\server\\path\\to\\file')
+        self.assertEqual(fn('////server/path/to/file'), '\\\\server\\path\\to\\file')
+        self.assertEqual(fn('/////server/path/to/file'), '\\\\server\\path\\to\\file')
+        # Localhost paths
+        self.assertEqual(fn('//localhost/C:/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn('//localhost/C|/path/to/file'), 'C:\\path\\to\\file')
+        self.assertEqual(fn('//localhost/path/to/file'), '\\path\\to\\file')
+        self.assertEqual(fn('//localhost//server/path/to/file'), '\\\\server\\path\\to\\file')
+        # Percent-encoded forward slashes are preserved for backwards compatibility
+        self.assertEqual(fn('C:/foo%2fbar'), 'C:\\foo/bar')
+        self.assertEqual(fn('//server/share/foo%2fbar'), '\\\\server\\share\\foo/bar')
+        # Round-tripping
+        paths = ['C:',
+                 r'\C\test\\',
+                 r'C:\foo\bar\spam.foo']
+        for path in paths:
+            self.assertEqual(fn(urllib.request.pathname2url(path)), path)
+
+    @unittest.skipIf(sys.platform == 'win32',
+                     'test specific to POSIX pathnames')
+    def test_url2pathname_posix(self):
+        fn = urllib.request.url2pathname
+        self.assertEqual(fn('/foo/bar'), '/foo/bar')
+        self.assertEqual(fn('//foo/bar'), '//foo/bar')
+        self.assertEqual(fn('///foo/bar'), '/foo/bar')
+        self.assertEqual(fn('////foo/bar'), '//foo/bar')
+        self.assertEqual(fn('//localhost/foo/bar'), '/foo/bar')
+
+    @unittest.skipUnless(os_helper.FS_NONASCII, 'need os_helper.FS_NONASCII')
+    def test_url2pathname_nonascii(self):
+        encoding = sys.getfilesystemencoding()
+        errors = sys.getfilesystemencodeerrors()
+        url = os_helper.FS_NONASCII
+        self.assertEqual(urllib.request.url2pathname(url), os_helper.FS_NONASCII)
+        url = urllib.parse.quote(url, encoding=encoding, errors=errors)
+        self.assertEqual(urllib.request.url2pathname(url), os_helper.FS_NONASCII)
 
 class Utility_Tests(unittest.TestCase):
     """Testcase to test the various utility functions in the urllib."""
@@ -1636,60 +1718,5 @@ def test_with_method_arg(self):
         self.assertEqual(request.get_method(), 'HEAD')
 
 
-class URL2PathNameTests(unittest.TestCase):
-
-    def test_converting_drive_letter(self):
-        self.assertEqual(url2pathname("///C|"), 'C:')
-        self.assertEqual(url2pathname("///C:"), 'C:')
-        self.assertEqual(url2pathname("///C|/"), 'C:\\')
-
-    def test_converting_when_no_drive_letter(self):
-        # cannot end a raw string in \
-        self.assertEqual(url2pathname("///C/test/"), r'\\\C\test' '\\')
-        self.assertEqual(url2pathname("////C/test/"), r'\\C\test' '\\')
-
-    def test_simple_compare(self):
-        self.assertEqual(url2pathname("///C|/foo/bar/spam.foo"),
-                         r'C:\foo\bar\spam.foo')
-
-    def test_non_ascii_drive_letter(self):
-        self.assertRaises(IOError, url2pathname, "///\u00e8|/")
-
-    def test_roundtrip_url2pathname(self):
-        list_of_paths = ['C:',
-                         r'\\\C\test\\',
-                         r'C:\foo\bar\spam.foo'
-                         ]
-        for path in list_of_paths:
-            self.assertEqual(url2pathname(pathname2url(path)), path)
-
-class PathName2URLTests(unittest.TestCase):
-
-    def test_converting_drive_letter(self):
-        self.assertEqual(pathname2url("C:"), '///C:')
-        self.assertEqual(pathname2url("C:\\"), '///C:')
-
-    def test_converting_when_no_drive_letter(self):
-        self.assertEqual(pathname2url(r"\\\folder\test" "\\"),
-                         '/////folder/test/')
-        self.assertEqual(pathname2url(r"\\folder\test" "\\"),
-                         '////folder/test/')
-        self.assertEqual(pathname2url(r"\folder\test" "\\"),
-                         '/folder/test/')
-
-    def test_simple_compare(self):
-        self.assertEqual(pathname2url(r'C:\foo\bar\spam.foo'),
-                         "///C:/foo/bar/spam.foo" )
-
-    def test_long_drive_letter(self):
-        self.assertRaises(IOError, pathname2url, "XX:\\")
-
-    def test_roundtrip_pathname2url(self):
-        list_of_paths = ['///C:',
-                         '/////folder/test/',
-                         '///C:/foo/bar/spam.foo']
-        for path in list_of_paths:
-            self.assertEqual(pathname2url(url2pathname(path)), path)
-
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index eed0599642edfb..229cb9d9741210 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -717,10 +717,6 @@ def test_processors(self):
 
 
 def sanepathname2url(path):
-    try:
-        path.encode("utf-8")
-    except UnicodeEncodeError:
-        raise unittest.SkipTest("path is not encodable to utf8")
     urlpath = urllib.request.pathname2url(path)
     if os.name == "nt" and urlpath.startswith("///"):
         urlpath = urlpath[2:]
@@ -793,6 +789,7 @@ def connect_ftp(self, user, passwd, host, port, dirs,
             headers = r.info()
             self.assertEqual(headers.get("Content-type"), mimetype)
             self.assertEqual(int(headers["Content-length"]), len(data))
+            r.close()
 
     def test_file(self):
         import email.utils
@@ -1233,10 +1230,11 @@ def test_redirect(self):
                 try:
                     method(req, MockFile(), code, "Blah",
                            MockHeaders({"location": to_url}))
-                except urllib.error.HTTPError:
+                except urllib.error.HTTPError as err:
                     # 307 and 308 in response to POST require user OK
                     self.assertIn(code, (307, 308))
                     self.assertIsNotNone(data)
+                    err.close()
                 self.assertEqual(o.req.get_full_url(), to_url)
                 try:
                     self.assertEqual(o.req.get_method(), "GET")
@@ -1272,9 +1270,10 @@ def redirect(h, req, url=to_url):
             while 1:
                 redirect(h, req, "http://example.com/")
                 count = count + 1
-        except urllib.error.HTTPError:
+        except urllib.error.HTTPError as err:
             # don't stop until max_repeats, because cookies may introduce state
             self.assertEqual(count, urllib.request.HTTPRedirectHandler.max_repeats)
+            err.close()
 
         # detect endless non-repeating chain of redirects
         req = Request(from_url, origin_req_host="example.com")
@@ -1284,9 +1283,10 @@ def redirect(h, req, url=to_url):
             while 1:
                 redirect(h, req, "http://example.com/%d" % count)
                 count = count + 1
-        except urllib.error.HTTPError:
+        except urllib.error.HTTPError as err:
             self.assertEqual(count,
                              urllib.request.HTTPRedirectHandler.max_redirections)
+            err.close()
 
     def test_invalid_redirect(self):
         from_url = "http://example.com/a.html"
@@ -1300,9 +1300,11 @@ def test_invalid_redirect(self):
 
         for scheme in invalid_schemes:
             invalid_url = scheme + '://' + schemeless_url
-            self.assertRaises(urllib.error.HTTPError, h.http_error_302,
+            with self.assertRaises(urllib.error.HTTPError) as cm:
+                h.http_error_302(
                     req, MockFile(), 302, "Security Loophole",
                     MockHeaders({"location": invalid_url}))
+            cm.exception.close()
 
         for scheme in valid_schemes:
             valid_url = scheme + '://' + schemeless_url
@@ -1898,11 +1900,13 @@ def test_HTTPError_interface(self):
         self.assertEqual(str(err), expected_errmsg)
         expected_errmsg = '<HTTPError %s: %r>' % (err.code, err.msg)
         self.assertEqual(repr(err), expected_errmsg)
+        err.close()
 
     def test_gh_98778(self):
         x = urllib.error.HTTPError("url", 405, "METHOD NOT ALLOWED", None, None)
         self.assertEqual(getattr(x, "__notes__", ()), ())
         self.assertIsInstance(x.fp.read(), bytes)
+        x.close()
 
     def test_parse_proxy(self):
         parse_proxy_test_cases = [
diff --git a/Lib/test/test_urllib2_localnet.py b/Lib/test/test_urllib2_localnet.py
index 50c491a3cfd3d0..9cb15d61c2ad4d 100644
--- a/Lib/test/test_urllib2_localnet.py
+++ b/Lib/test/test_urllib2_localnet.py
@@ -316,7 +316,9 @@ def test_basic_auth_httperror(self):
         ah = urllib.request.HTTPBasicAuthHandler()
         ah.add_password(self.REALM, self.server_url, self.USER, self.INCORRECT_PASSWD)
         urllib.request.install_opener(urllib.request.build_opener(ah))
-        self.assertRaises(urllib.error.HTTPError, urllib.request.urlopen, self.server_url)
+        with self.assertRaises(urllib.error.HTTPError) as cm:
+            urllib.request.urlopen(self.server_url)
+        cm.exception.close()
 
 
 @hashlib_helper.requires_hashdigest("md5", openssl=True)
@@ -362,15 +364,15 @@ def test_proxy_with_bad_password_raises_httperror(self):
         self.proxy_digest_handler.add_password(self.REALM, self.URL,
                                                self.USER, self.PASSWD+"bad")
         self.digest_auth_handler.set_qop("auth")
-        self.assertRaises(urllib.error.HTTPError,
-                          self.opener.open,
-                          self.URL)
+        with self.assertRaises(urllib.error.HTTPError) as cm:
+            self.opener.open(self.URL)
+        cm.exception.close()
 
     def test_proxy_with_no_password_raises_httperror(self):
         self.digest_auth_handler.set_qop("auth")
-        self.assertRaises(urllib.error.HTTPError,
-                          self.opener.open,
-                          self.URL)
+        with self.assertRaises(urllib.error.HTTPError) as cm:
+            self.opener.open(self.URL)
+        cm.exception.close()
 
     def test_proxy_qop_auth_works(self):
         self.proxy_digest_handler.add_password(self.REALM, self.URL,
diff --git a/Lib/test/test_urllib_response.py b/Lib/test/test_urllib_response.py
index b76763f4ed824f..d949fa38bfc42f 100644
--- a/Lib/test/test_urllib_response.py
+++ b/Lib/test/test_urllib_response.py
@@ -48,6 +48,7 @@ def test_addinfo(self):
         info = urllib.response.addinfo(self.fp, self.test_headers)
         self.assertEqual(info.info(), self.test_headers)
         self.assertEqual(info.headers, self.test_headers)
+        info.close()
 
     def test_addinfourl(self):
         url = "http://www.python.org"
@@ -60,6 +61,7 @@ def test_addinfourl(self):
         self.assertEqual(infourl.headers, self.test_headers)
         self.assertEqual(infourl.url, url)
         self.assertEqual(infourl.status, code)
+        infourl.close()
 
     def tearDown(self):
         self.sock.close()
diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index 236b6e4516490a..818e7e93dbbe11 100644
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -103,7 +103,9 @@
 
 class UrlParseTestCase(unittest.TestCase):
 
-    def checkRoundtrips(self, url, parsed, split):
+    def checkRoundtrips(self, url, parsed, split, url2=None):
+        if url2 is None:
+            url2 = url
         result = urllib.parse.urlparse(url)
         self.assertSequenceEqual(result, parsed)
         t = (result.scheme, result.netloc, result.path,
@@ -111,7 +113,7 @@ def checkRoundtrips(self, url, parsed, split):
         self.assertSequenceEqual(t, parsed)
         # put it back together and it should be the same
         result2 = urllib.parse.urlunparse(result)
-        self.assertSequenceEqual(result2, url)
+        self.assertSequenceEqual(result2, url2)
         self.assertSequenceEqual(result2, result.geturl())
 
         # the result of geturl() is a fixpoint; we can always parse it
@@ -137,7 +139,7 @@ def checkRoundtrips(self, url, parsed, split):
              result.query, result.fragment)
         self.assertSequenceEqual(t, split)
         result2 = urllib.parse.urlunsplit(result)
-        self.assertSequenceEqual(result2, url)
+        self.assertSequenceEqual(result2, url2)
         self.assertSequenceEqual(result2, result.geturl())
 
         # check the fixpoint property of re-parsing the result of geturl()
@@ -175,9 +177,60 @@ def test_qs(self):
 
     def test_roundtrips(self):
         str_cases = [
+            ('path/to/file',
+             ('', '', 'path/to/file', '', '', ''),
+             ('', '', 'path/to/file', '', '')),
+            ('/path/to/file',
+             ('', '', '/path/to/file', '', '', ''),
+             ('', '', '/path/to/file', '', '')),
+            ('//path/to/file',
+             ('', 'path', '/to/file', '', '', ''),
+             ('', 'path', '/to/file', '', '')),
+            ('////path/to/file',
+             ('', '', '//path/to/file', '', '', ''),
+             ('', '', '//path/to/file', '', '')),
+            ('/////path/to/file',
+             ('', '', '///path/to/file', '', '', ''),
+             ('', '', '///path/to/file', '', '')),
+            ('scheme:path/to/file',
+             ('scheme', '', 'path/to/file', '', '', ''),
+             ('scheme', '', 'path/to/file', '', '')),
+            ('scheme:/path/to/file',
+             ('scheme', '', '/path/to/file', '', '', ''),
+             ('scheme', '', '/path/to/file', '', '')),
+            ('scheme://path/to/file',
+             ('scheme', 'path', '/to/file', '', '', ''),
+             ('scheme', 'path', '/to/file', '', '')),
+            ('scheme:////path/to/file',
+             ('scheme', '', '//path/to/file', '', '', ''),
+             ('scheme', '', '//path/to/file', '', '')),
+            ('scheme://///path/to/file',
+             ('scheme', '', '///path/to/file', '', '', ''),
+             ('scheme', '', '///path/to/file', '', '')),
+            ('file:tmp/junk.txt',
+             ('file', '', 'tmp/junk.txt', '', '', ''),
+             ('file', '', 'tmp/junk.txt', '', '')),
             ('file:///tmp/junk.txt',
              ('file', '', '/tmp/junk.txt', '', '', ''),
              ('file', '', '/tmp/junk.txt', '', '')),
+            ('file:////tmp/junk.txt',
+             ('file', '', '//tmp/junk.txt', '', '', ''),
+             ('file', '', '//tmp/junk.txt', '', '')),
+            ('file://///tmp/junk.txt',
+             ('file', '', '///tmp/junk.txt', '', '', ''),
+             ('file', '', '///tmp/junk.txt', '', '')),
+            ('http:tmp/junk.txt',
+             ('http', '', 'tmp/junk.txt', '', '', ''),
+             ('http', '', 'tmp/junk.txt', '', '')),
+            ('http://example.com/tmp/junk.txt',
+             ('http', 'example.com', '/tmp/junk.txt', '', '', ''),
+             ('http', 'example.com', '/tmp/junk.txt', '', '')),
+            ('http:///example.com/tmp/junk.txt',
+             ('http', '', '/example.com/tmp/junk.txt', '', '', ''),
+             ('http', '', '/example.com/tmp/junk.txt', '', '')),
+            ('http:////example.com/tmp/junk.txt',
+             ('http', '', '//example.com/tmp/junk.txt', '', '', ''),
+             ('http', '', '//example.com/tmp/junk.txt', '', '')),
             ('imap://mail.python.org/mbox1',
              ('imap', 'mail.python.org', '/mbox1', '', '', ''),
              ('imap', 'mail.python.org', '/mbox1', '', '')),
@@ -204,14 +257,59 @@ def test_roundtrips(self):
               'action=download-manifest&url=https://example.com/app', ''),
              ('itms-services', '', '',
               'action=download-manifest&url=https://example.com/app', '')),
+            ('+scheme:path/to/file',
+             ('', '', '+scheme:path/to/file', '', '', ''),
+             ('', '', '+scheme:path/to/file', '', '')),
+            ('sch_me:path/to/file',
+             ('', '', 'sch_me:path/to/file', '', '', ''),
+             ('', '', 'sch_me:path/to/file', '', '')),
             ]
         def _encode(t):
             return (t[0].encode('ascii'),
                     tuple(x.encode('ascii') for x in t[1]),
                     tuple(x.encode('ascii') for x in t[2]))
         bytes_cases = [_encode(x) for x in str_cases]
+        str_cases += [
+            ('schème:path/to/file',
+             ('', '', 'schème:path/to/file', '', '', ''),
+             ('', '', 'schème:path/to/file', '', '')),
+            ]
         for url, parsed, split in str_cases + bytes_cases:
-            self.checkRoundtrips(url, parsed, split)
+            with self.subTest(url):
+                self.checkRoundtrips(url, parsed, split)
+
+    def test_roundtrips_normalization(self):
+        str_cases = [
+            ('///path/to/file',
+             '/path/to/file',
+             ('', '', '/path/to/file', '', '', ''),
+             ('', '', '/path/to/file', '', '')),
+            ('scheme:///path/to/file',
+             'scheme:/path/to/file',
+             ('scheme', '', '/path/to/file', '', '', ''),
+             ('scheme', '', '/path/to/file', '', '')),
+            ('file:/tmp/junk.txt',
+             'file:///tmp/junk.txt',
+             ('file', '', '/tmp/junk.txt', '', '', ''),
+             ('file', '', '/tmp/junk.txt', '', '')),
+            ('http:/tmp/junk.txt',
+             'http:///tmp/junk.txt',
+             ('http', '', '/tmp/junk.txt', '', '', ''),
+             ('http', '', '/tmp/junk.txt', '', '')),
+            ('https:/tmp/junk.txt',
+             'https:///tmp/junk.txt',
+             ('https', '', '/tmp/junk.txt', '', '', ''),
+             ('https', '', '/tmp/junk.txt', '', '')),
+        ]
+        def _encode(t):
+            return (t[0].encode('ascii'),
+                    t[1].encode('ascii'),
+                    tuple(x.encode('ascii') for x in t[2]),
+                    tuple(x.encode('ascii') for x in t[3]))
+        bytes_cases = [_encode(x) for x in str_cases]
+        for url, url2, parsed, split in str_cases + bytes_cases:
+            with self.subTest(url):
+                self.checkRoundtrips(url, parsed, split, url2)
 
     def test_http_roundtrips(self):
         # urllib.parse.urlsplit treats 'http:' as an optimized special case,
@@ -252,11 +350,17 @@ def _encode(t):
                     self.checkRoundtrips(url, parsed, split)
 
     def checkJoin(self, base, relurl, expected):
-        str_components = (base, relurl, expected)
-        self.assertEqual(urllib.parse.urljoin(base, relurl), expected)
-        bytes_components = baseb, relurlb, expectedb = [
-                            x.encode('ascii') for x in str_components]
-        self.assertEqual(urllib.parse.urljoin(baseb, relurlb), expectedb)
+        with self.subTest(base=base, relurl=relurl):
+            self.assertEqual(urllib.parse.urljoin(base, relurl), expected)
+            baseb = base.encode('ascii')
+            relurlb = relurl.encode('ascii')
+            expectedb = expected.encode('ascii')
+            self.assertEqual(urllib.parse.urljoin(baseb, relurlb), expectedb)
+
+            relurl = urllib.parse.urlunsplit(urllib.parse.urlsplit(relurl))
+            self.assertEqual(urllib.parse.urljoin(base, relurl), expected)
+            relurlb = urllib.parse.urlunsplit(urllib.parse.urlsplit(relurlb))
+            self.assertEqual(urllib.parse.urljoin(baseb, relurlb), expectedb)
 
     def test_unparse_parse(self):
         str_cases = ['Python', './Python','x-newscheme://foo.com/stuff','x://y','x:/y','x:/','/',]
diff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index e177464c00f7a6..e7e44c6413c2e2 100755
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -19,7 +19,7 @@ def importable(name):
     try:
         __import__(name)
         return True
-    except:
+    except ModuleNotFoundError:
         return False
 
 
diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
index 668642f73e8d9f..c39c83f9d0a5c3 100644
--- a/Lib/test/test_venv.py
+++ b/Lib/test/test_venv.py
@@ -17,6 +17,7 @@
 import sys
 import sysconfig
 import tempfile
+import shlex
 from test.support import (captured_stdout, captured_stderr,
                           skip_if_broken_multiprocessing_synchronize, verbose,
                           requires_subprocess, is_android, is_apple_mobile,
@@ -24,7 +25,8 @@
                           requires_venv_with_pip, TEST_HOME_DIR,
                           requires_resource, copy_python_src_ignore)
 from test.support.os_helper import (can_symlink, EnvironmentVarGuard, rmtree,
-                                    TESTFN)
+                                    TESTFN, FakePath)
+from test.support.testcase import ExtraAssertions
 import unittest
 import venv
 from unittest.mock import patch, Mock
@@ -63,7 +65,7 @@ def check_output(cmd, encoding=None):
         )
     return out, err
 
-class BaseTest(unittest.TestCase):
+class BaseTest(unittest.TestCase, ExtraAssertions):
     """Base class for venv tests."""
     maxDiff = 80 * 50
 
@@ -75,7 +77,7 @@ def setUp(self):
             self.include = 'Include'
         else:
             self.bindir = 'bin'
-            self.lib = ('lib', 'python%d.%d' % sys.version_info[:2])
+            self.lib = ('lib', f'python{sysconfig._get_python_version_abi()}')
             self.include = 'include'
         executable = sys._base_executable
         self.exe = os.path.split(executable)[-1]
@@ -125,12 +127,12 @@ def test_defaults_with_str_path(self):
         self.run_with_capture(venv.create, self.env_dir)
         self._check_output_of_default_create()
 
-    def test_defaults_with_pathlib_path(self):
+    def test_defaults_with_pathlike(self):
         """
-        Test the create function with default arguments and a pathlib.Path path.
+        Test the create function with default arguments and a path-like path.
         """
         rmtree(self.env_dir)
-        self.run_with_capture(venv.create, pathlib.Path(self.env_dir))
+        self.run_with_capture(venv.create, FakePath(self.env_dir))
         self._check_output_of_default_create()
 
     def _check_output_of_default_create(self):
@@ -488,6 +490,82 @@ def test_executable_symlinks(self):
             'import sys; print(sys.executable)'])
         self.assertEqual(out.strip(), envpy.encode())
 
+    # gh-124651: test quoted strings
+    @unittest.skipIf(os.name == 'nt', 'contains invalid characters on Windows')
+    def test_special_chars_bash(self):
+        """
+        Test that the template strings are quoted properly (bash)
+        """
+        rmtree(self.env_dir)
+        bash = shutil.which('bash')
+        if bash is None:
+            self.skipTest('bash required for this test')
+        env_name = '"\';&&$e|\'"'
+        env_dir = os.path.join(os.path.realpath(self.env_dir), env_name)
+        builder = venv.EnvBuilder(clear=True)
+        builder.create(env_dir)
+        activate = os.path.join(env_dir, self.bindir, 'activate')
+        test_script = os.path.join(self.env_dir, 'test_special_chars.sh')
+        with open(test_script, "w") as f:
+            f.write(f'source {shlex.quote(activate)}\n'
+                    'python -c \'import sys; print(sys.executable)\'\n'
+                    'python -c \'import os; print(os.environ["VIRTUAL_ENV"])\'\n'
+                    'deactivate\n')
+        out, err = check_output([bash, test_script])
+        lines = out.splitlines()
+        self.assertTrue(env_name.encode() in lines[0])
+        self.assertEndsWith(lines[1], env_name.encode())
+
+    # gh-124651: test quoted strings
+    @unittest.skipIf(os.name == 'nt', 'contains invalid characters on Windows')
+    def test_special_chars_csh(self):
+        """
+        Test that the template strings are quoted properly (csh)
+        """
+        rmtree(self.env_dir)
+        csh = shutil.which('tcsh') or shutil.which('csh')
+        if csh is None:
+            self.skipTest('csh required for this test')
+        env_name = '"\';&&$e|\'"'
+        env_dir = os.path.join(os.path.realpath(self.env_dir), env_name)
+        builder = venv.EnvBuilder(clear=True)
+        builder.create(env_dir)
+        activate = os.path.join(env_dir, self.bindir, 'activate.csh')
+        test_script = os.path.join(self.env_dir, 'test_special_chars.csh')
+        with open(test_script, "w") as f:
+            f.write(f'source {shlex.quote(activate)}\n'
+                    'python -c \'import sys; print(sys.executable)\'\n'
+                    'python -c \'import os; print(os.environ["VIRTUAL_ENV"])\'\n'
+                    'deactivate\n')
+        out, err = check_output([csh, test_script])
+        lines = out.splitlines()
+        self.assertTrue(env_name.encode() in lines[0])
+        self.assertEndsWith(lines[1], env_name.encode())
+
+    # gh-124651: test quoted strings on Windows
+    @unittest.skipUnless(os.name == 'nt', 'only relevant on Windows')
+    def test_special_chars_windows(self):
+        """
+        Test that the template strings are quoted properly on Windows
+        """
+        rmtree(self.env_dir)
+        env_name = "'&&^$e"
+        env_dir = os.path.join(os.path.realpath(self.env_dir), env_name)
+        builder = venv.EnvBuilder(clear=True)
+        builder.create(env_dir)
+        activate = os.path.join(env_dir, self.bindir, 'activate.bat')
+        test_batch = os.path.join(self.env_dir, 'test_special_chars.bat')
+        with open(test_batch, "w") as f:
+            f.write('@echo off\n'
+                    f'"{activate}" & '
+                    f'{self.exe} -c "import sys; print(sys.executable)" & '
+                    f'{self.exe} -c "import os; print(os.environ[\'VIRTUAL_ENV\'])" & '
+                    'deactivate')
+        out, err = check_output([test_batch])
+        lines = out.splitlines()
+        self.assertTrue(env_name.encode() in lines[0])
+        self.assertEndsWith(lines[1], env_name.encode())
+
     @unittest.skipUnless(os.name == 'nt', 'only relevant on Windows')
     def test_unicode_in_batch_file(self):
         """
@@ -504,6 +582,21 @@ def test_unicode_in_batch_file(self):
         )
         self.assertEqual(out.strip(), '0')
 
+    @unittest.skipUnless(os.name == 'nt' and can_symlink(),
+                         'symlinks on Windows')
+    def test_failed_symlink(self):
+        """
+        Test handling of failed symlinks on Windows.
+        """
+        rmtree(self.env_dir)
+        env_dir = os.path.join(os.path.realpath(self.env_dir), 'venv')
+        with patch('os.symlink') as mock_symlink:
+            mock_symlink.side_effect = OSError()
+            builder = venv.EnvBuilder(clear=True, symlinks=True)
+            _, err = self.run_with_capture(builder.create, env_dir)
+            filepath_regex = r"'[A-Z]:\\\\(?:[^\\\\]+\\\\)*[^\\\\]+'"
+            self.assertRegex(err, rf"Unable to symlink {filepath_regex} to {filepath_regex}")
+
     @requireVenvCreate
     def test_multiprocessing(self):
         """
@@ -572,7 +665,7 @@ def test_pathsep_error(self):
         rmtree(self.env_dir)
         bad_itempath = self.env_dir + os.pathsep
         self.assertRaises(ValueError, venv.create, bad_itempath)
-        self.assertRaises(ValueError, venv.create, pathlib.Path(bad_itempath))
+        self.assertRaises(ValueError, venv.create, FakePath(bad_itempath))
 
     @unittest.skipIf(os.name == 'nt', 'not relevant on Windows')
     @requireVenvCreate
@@ -593,7 +686,8 @@ def test_zippath_from_non_installed_posix(self):
         libdir = os.path.join(non_installed_dir, platlibdir, self.lib[1])
         os.makedirs(libdir)
         landmark = os.path.join(libdir, "os.py")
-        stdlib_zip = "python%d%d.zip" % sys.version_info[:2]
+        abi_thread = "t" if sysconfig.get_config_var("Py_GIL_DISABLED") else ""
+        stdlib_zip = f"python{sys.version_info.major}{sys.version_info.minor}{abi_thread}"
         zip_landmark = os.path.join(non_installed_dir,
                                     platlibdir,
                                     stdlib_zip)
@@ -775,6 +869,27 @@ def test_venv_same_path(self):
                 else:
                     self.assertFalse(same_path(path1, path2))
 
+    # gh-126084: venvwlauncher should run pythonw, not python
+    @requireVenvCreate
+    @unittest.skipUnless(os.name == 'nt', 'only relevant on Windows')
+    def test_venvwlauncher(self):
+        """
+        Test that the GUI launcher runs the GUI python.
+        """
+        rmtree(self.env_dir)
+        venv.create(self.env_dir)
+        exename = self.exe
+        # Retain the debug suffix if present
+        if "python" in exename and not "pythonw" in exename:
+            exename = exename.replace("python", "pythonw")
+        envpyw = os.path.join(self.env_dir, self.bindir, exename)
+        try:
+            subprocess.check_call([envpyw, "-c", "import sys; "
+                "assert sys._base_executable.endswith('%s')" % exename])
+        except subprocess.CalledProcessError:
+            self.fail("venvwlauncher.exe did not run %s" % exename)
+
+
 @requireVenvCreate
 class EnsurePipTest(BaseTest):
     """Test venv module installation of pip."""
@@ -885,6 +1000,14 @@ def do_test_with_pip(self, system_site_packages):
         err = re.sub("^(WARNING: )?The directory .* or its parent directory "
                      "is not owned or is not writable by the current user.*$", "",
                      err, flags=re.MULTILINE)
+        # Ignore warning about missing optional module:
+        try:
+            import ssl
+        except ImportError:
+            err = re.sub(
+                "^WARNING: Disabling truststore since ssl support is missing$",
+                "",
+                err, flags=re.MULTILINE)
         self.assertEqual(err.rstrip(), "")
         # Being fairly specific regarding the expected behaviour for the
         # initial bundling phase in Python 3.4. If the output changes in
diff --git a/Lib/test/test_warnings/__init__.py b/Lib/test/test_warnings/__init__.py
index 4416ed0f3ed3ef..5ed71495d84af0 100644
--- a/Lib/test/test_warnings/__init__.py
+++ b/Lib/test/test_warnings/__init__.py
@@ -1,6 +1,8 @@
 from contextlib import contextmanager
 import linecache
 import os
+import importlib
+import inspect
 from io import StringIO
 import re
 import sys
@@ -636,6 +638,97 @@ class NonWarningSubclass:
                 self.module.warn('good warning category', MyWarningClass)
             self.assertIsInstance(cm.warning, Warning)
 
+    def check_module_globals(self, module_globals):
+        with original_warnings.catch_warnings(module=self.module, record=True) as w:
+            self.module.filterwarnings('default')
+            self.module.warn_explicit(
+                'eggs', UserWarning, 'bar', 1,
+                module_globals=module_globals)
+        self.assertEqual(len(w), 1)
+        self.assertEqual(w[0].category, UserWarning)
+        self.assertEqual(str(w[0].message), 'eggs')
+
+    def check_module_globals_error(self, module_globals, errmsg, errtype=ValueError):
+        if self.module is py_warnings:
+            self.check_module_globals(module_globals)
+            return
+        with original_warnings.catch_warnings(module=self.module, record=True) as w:
+            self.module.filterwarnings('always')
+            with self.assertRaisesRegex(errtype, re.escape(errmsg)):
+                self.module.warn_explicit(
+                    'eggs', UserWarning, 'bar', 1,
+                    module_globals=module_globals)
+        self.assertEqual(len(w), 0)
+
+    def check_module_globals_deprecated(self, module_globals, msg):
+        if self.module is py_warnings:
+            self.check_module_globals(module_globals)
+            return
+        with original_warnings.catch_warnings(module=self.module, record=True) as w:
+            self.module.filterwarnings('always')
+            self.module.warn_explicit(
+                'eggs', UserWarning, 'bar', 1,
+                module_globals=module_globals)
+        self.assertEqual(len(w), 2)
+        self.assertEqual(w[0].category, DeprecationWarning)
+        self.assertEqual(str(w[0].message), msg)
+        self.assertEqual(w[1].category, UserWarning)
+        self.assertEqual(str(w[1].message), 'eggs')
+
+    def test_gh86298_no_loader_and_no_spec(self):
+        self.check_module_globals({'__name__': 'bar'})
+
+    def test_gh86298_loader_is_none_and_no_spec(self):
+        self.check_module_globals({'__name__': 'bar', '__loader__': None})
+
+    def test_gh86298_no_loader_and_spec_is_none(self):
+        self.check_module_globals_error(
+            {'__name__': 'bar', '__spec__': None},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_loader_is_none_and_spec_is_none(self):
+        self.check_module_globals_error(
+            {'__name__': 'bar', '__loader__': None, '__spec__': None},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_loader_is_none_and_spec_loader_is_none(self):
+        self.check_module_globals_error(
+            {'__name__': 'bar', '__loader__': None,
+             '__spec__': types.SimpleNamespace(loader=None)},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_no_spec(self):
+        self.check_module_globals_deprecated(
+            {'__name__': 'bar', '__loader__': object()},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_spec_is_none(self):
+        self.check_module_globals_deprecated(
+            {'__name__': 'bar', '__loader__': object(), '__spec__': None},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_no_spec_loader(self):
+        self.check_module_globals_deprecated(
+            {'__name__': 'bar', '__loader__': object(),
+             '__spec__': types.SimpleNamespace()},
+            'Module globals is missing a __spec__.loader')
+
+    def test_gh86298_loader_and_spec_loader_disagree(self):
+        self.check_module_globals_deprecated(
+            {'__name__': 'bar', '__loader__': object(),
+             '__spec__': types.SimpleNamespace(loader=object())},
+            'Module globals; __loader__ != __spec__.loader')
+
+    def test_gh86298_no_loader_and_no_spec_loader(self):
+        self.check_module_globals_error(
+            {'__name__': 'bar', '__spec__': types.SimpleNamespace()},
+            'Module globals is missing a __spec__.loader', AttributeError)
+
+    def test_gh86298_no_loader_with_spec_loader_okay(self):
+        self.check_module_globals(
+            {'__name__': 'bar',
+             '__spec__': types.SimpleNamespace(loader=object())})
+
 class CWarnTests(WarnTests, unittest.TestCase):
     module = c_warnings
 
@@ -884,37 +977,46 @@ def test_issue31285(self):
         # warn_explicit() should neither raise a SystemError nor cause an
         # assertion failure, in case the return value of get_source() has a
         # bad splitlines() method.
-        def get_bad_loader(splitlines_ret_val):
+        get_source_called = []
+        def get_module_globals(*, splitlines_ret_val):
+            class BadSource(str):
+                def splitlines(self):
+                    return splitlines_ret_val
+
             class BadLoader:
                 def get_source(self, fullname):
-                    class BadSource(str):
-                        def splitlines(self):
-                            return splitlines_ret_val
+                    get_source_called.append(splitlines_ret_val)
                     return BadSource('spam')
-            return BadLoader()
+
+            loader = BadLoader()
+            spec = importlib.machinery.ModuleSpec('foobar', loader)
+            return {'__loader__': loader,
+                    '__spec__': spec,
+                    '__name__': 'foobar'}
+
 
         wmod = self.module
         with original_warnings.catch_warnings(module=wmod):
             wmod.filterwarnings('default', category=UserWarning)
 
+            linecache.clearcache()
             with support.captured_stderr() as stderr:
                 wmod.warn_explicit(
                     'foo', UserWarning, 'bar', 1,
-                    module_globals={'__loader__': get_bad_loader(42),
-                                    '__name__': 'foobar'})
+                    module_globals=get_module_globals(splitlines_ret_val=42))
             self.assertIn('UserWarning: foo', stderr.getvalue())
+            self.assertEqual(get_source_called, [42])
 
-            show = wmod._showwarnmsg
-            try:
+            linecache.clearcache()
+            with support.swap_attr(wmod, '_showwarnmsg', None):
                 del wmod._showwarnmsg
                 with support.captured_stderr() as stderr:
                     wmod.warn_explicit(
                         'eggs', UserWarning, 'bar', 1,
-                        module_globals={'__loader__': get_bad_loader([42]),
-                                        '__name__': 'foobar'})
+                        module_globals=get_module_globals(splitlines_ret_val=[42]))
                 self.assertIn('UserWarning: eggs', stderr.getvalue())
-            finally:
-                wmod._showwarnmsg = show
+            self.assertEqual(get_source_called, [42, [42]])
+            linecache.clearcache()
 
     @support.cpython_only
     def test_issue31411(self):
@@ -1682,6 +1784,29 @@ def d(): pass
             isinstance(cell.cell_contents, deprecated) for cell in d.__closure__
         ))
 
+    def test_inspect(self):
+        @deprecated("depr")
+        def sync():
+            pass
+
+        @deprecated("depr")
+        async def coro():
+            pass
+
+        class Cls:
+            @deprecated("depr")
+            def sync(self):
+                pass
+
+            @deprecated("depr")
+            async def coro(self):
+                pass
+
+        self.assertFalse(inspect.iscoroutinefunction(sync))
+        self.assertTrue(inspect.iscoroutinefunction(coro))
+        self.assertFalse(inspect.iscoroutinefunction(Cls.sync))
+        self.assertTrue(inspect.iscoroutinefunction(Cls.coro))
+
 def setUpModule():
     py_warnings.onceregistry.clear()
     c_warnings.onceregistry.clear()
diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index 16da24d7805b56..1a820d089d663d 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -82,7 +82,7 @@ def callback(self, ref):
 
 
 @contextlib.contextmanager
-def collect_in_thread(period=0.0001):
+def collect_in_thread(period=0.005):
     """
     Ensure GC collections happen in a different thread, at a high frequency.
     """
@@ -123,10 +123,12 @@ def test_basic_ref(self):
     def test_ref_repr(self):
         obj = C()
         ref = weakref.ref(obj)
-        self.assertRegex(repr(ref),
-                         rf"<weakref at 0x[0-9a-fA-F]+; "
-                         rf"to '{C.__module__}.{C.__qualname__}' "
-                         rf"at 0x[0-9a-fA-F]+>")
+        regex = (
+            rf"<weakref at 0x[0-9a-fA-F]+; "
+            rf"to '{'' if __name__ == '__main__' else C.__module__ + '.'}{C.__qualname__}' "
+            rf"at 0x[0-9a-fA-F]+>"
+        )
+        self.assertRegex(repr(ref), regex)
 
         obj = None
         gc_collect()
@@ -141,10 +143,13 @@ def __name__(self):
 
         obj2 = WithName()
         ref2 = weakref.ref(obj2)
-        self.assertRegex(repr(ref2),
-                         rf"<weakref at 0x[0-9a-fA-F]+; "
-                         rf"to '{WithName.__module__}.{WithName.__qualname__}' "
-                         rf"at 0x[0-9a-fA-F]+ \(custom_name\)>")
+        regex = (
+            rf"<weakref at 0x[0-9a-fA-F]+; "
+            rf"to '{'' if __name__ == '__main__' else WithName.__module__ + '.'}"
+            rf"{WithName.__qualname__}' "
+            rf"at 0x[0-9a-fA-F]+ +\(custom_name\)>"
+        )
+        self.assertRegex(repr(ref2), regex)
 
     def test_repr_failure_gh99184(self):
         class MyConfig(dict):
@@ -229,10 +234,12 @@ def check(proxy):
     def test_proxy_repr(self):
         obj = C()
         ref = weakref.proxy(obj, self.callback)
-        self.assertRegex(repr(ref),
-                         rf"<weakproxy at 0x[0-9a-fA-F]+; "
-                         rf"to '{C.__module__}.{C.__qualname__}' "
-                         rf"at 0x[0-9a-fA-F]+>")
+        regex = (
+            rf"<weakproxy at 0x[0-9a-fA-F]+; "
+            rf"to '{'' if __name__ == '__main__' else C.__module__ + '.'}{C.__qualname__}' "
+            rf"at 0x[0-9a-fA-F]+>"
+        )
+        self.assertRegex(repr(ref), regex)
 
         obj = None
         gc_collect()
diff --git a/Lib/test/test_webbrowser.py b/Lib/test/test_webbrowser.py
index ae8d776e8413ff..4fcbc5c2e59ea3 100644
--- a/Lib/test/test_webbrowser.py
+++ b/Lib/test/test_webbrowser.py
@@ -244,7 +244,7 @@ def _obj_ref(self, *args):
     @unittest.skipIf(getattr(webbrowser, "objc", None) is None,
                      "iOS Webbrowser tests require ctypes")
     def setUp(self):
-        # Intercept the the objc library. Wrap the calls to get the
+        # Intercept the objc library. Wrap the calls to get the
         # references to classes and selectors to return strings, and
         # wrap msgSend to return stringified object references
         self.orig_objc = webbrowser.objc
diff --git a/Lib/test/test_winapi.py b/Lib/test/test_winapi.py
index 2ac6f3621710cd..73b8228ddc97ba 100644
--- a/Lib/test/test_winapi.py
+++ b/Lib/test/test_winapi.py
@@ -7,7 +7,7 @@
 import threading
 import time
 import unittest
-from test.support import import_helper
+from test.support import import_helper, os_helper
 
 _winapi = import_helper.import_module('_winapi', required_on=['win'])
 
@@ -127,3 +127,35 @@ def test_getshortpathname(self):
 
         # Should contain "PROGRA~" but we can't predict the number
         self.assertIsNotNone(re.match(r".\:\\PROGRA~\d", actual.upper()), actual)
+
+    def test_namedpipe(self):
+        pipe_name = rf"\\.\pipe\LOCAL\{os_helper.TESTFN}"
+
+        # Pipe does not exist, so this raises
+        with self.assertRaises(FileNotFoundError):
+            _winapi.WaitNamedPipe(pipe_name, 0)
+
+        pipe = _winapi.CreateNamedPipe(
+            pipe_name,
+            _winapi.PIPE_ACCESS_DUPLEX,
+            8, # 8=PIPE_REJECT_REMOTE_CLIENTS
+            2, # two instances available
+            32, 32, 0, 0)
+        self.addCleanup(_winapi.CloseHandle, pipe)
+
+        # Pipe instance is available, so this passes
+        _winapi.WaitNamedPipe(pipe_name, 0)
+
+        with open(pipe_name, 'w+b') as pipe2:
+            # No instances available, so this times out
+            # (WinError 121 does not get mapped to TimeoutError)
+            with self.assertRaises(OSError):
+                _winapi.WaitNamedPipe(pipe_name, 0)
+
+            _winapi.WriteFile(pipe, b'testdata')
+            self.assertEqual(b'testdata', pipe2.read(8))
+
+            self.assertEqual((b'', 0), _winapi.PeekNamedPipe(pipe, 8)[:2])
+            pipe2.write(b'testdata')
+            pipe2.flush()
+            self.assertEqual((b'testdata', 8), _winapi.PeekNamedPipe(pipe, 8)[:2])
diff --git a/Lib/test/test_winconsoleio.py b/Lib/test/test_winconsoleio.py
index a10d63dfdc9753..d9076e77c158a2 100644
--- a/Lib/test/test_winconsoleio.py
+++ b/Lib/test/test_winconsoleio.py
@@ -142,6 +142,29 @@ def test_write_empty_data(self):
         with ConIO('CONOUT$', 'w') as f:
             self.assertEqual(f.write(b''), 0)
 
+    @requires_resource('console')
+    def test_write(self):
+        testcases = []
+        with ConIO('CONOUT$', 'w') as f:
+            for a in [
+                b'',
+                b'abc',
+                b'\xc2\xa7\xe2\x98\x83\xf0\x9f\x90\x8d',
+                b'\xff'*10,
+            ]:
+                for b in b'\xc2\xa7', b'\xe2\x98\x83', b'\xf0\x9f\x90\x8d':
+                    testcases.append(a + b)
+                    for i in range(1, len(b)):
+                        data = a + b[:i]
+                        testcases.append(data + b'z')
+                        testcases.append(data + b'\xff')
+                        # incomplete multibyte sequence
+                        with self.subTest(data=data):
+                            self.assertEqual(f.write(data), len(a))
+            for data in testcases:
+                with self.subTest(data=data):
+                    self.assertEqual(f.write(data), len(data))
+
     def assertStdinRoundTrip(self, text):
         stdin = open('CONIN$', 'r')
         old_stdin = sys.stdin
diff --git a/Lib/test/test_winsound.py b/Lib/test/test_winsound.py
index a59d0d24f5db48..870ab7bd41d8ce 100644
--- a/Lib/test/test_winsound.py
+++ b/Lib/test/test_winsound.py
@@ -1,12 +1,13 @@
 # Ridiculously simple test of the winsound module for Windows.
 
 import functools
-import pathlib
+import os
 import time
 import unittest
 
 from test import support
 from test.support import import_helper
+from test.support import os_helper
 
 
 support.requires('audio')
@@ -85,13 +86,6 @@ def test_keyword_args(self):
         safe_MessageBeep(type=winsound.MB_OK)
 
 
-# A class for testing winsound when the given path resolves
-# to bytes rather than str.
-class BytesPath(pathlib.WindowsPath):
-    def __fspath__(self):
-        return bytes(super().__fspath__(), 'UTF-8')
-
-
 class PlaySoundTest(unittest.TestCase):
 
     def test_errors(self):
@@ -126,7 +120,7 @@ def test_snd_filename(self):
 
     def test_snd_filepath(self):
         fn = support.findfile('pluck-pcm8.wav', subdir='audiodata')
-        path = pathlib.Path(fn)
+        path = os_helper.FakePath(fn)
         safe_PlaySound(path, winsound.SND_FILENAME | winsound.SND_NODEFAULT)
 
     def test_snd_filepath_as_bytes(self):
@@ -134,7 +128,7 @@ def test_snd_filepath_as_bytes(self):
         self.assertRaises(
             TypeError,
             winsound.PlaySound,
-            BytesPath(fn),
+            os_helper.FakePath(os.fsencode(fn)),
             winsound.SND_FILENAME | winsound.SND_NODEFAULT
         )
 
diff --git a/Lib/test/test_with.py b/Lib/test/test_with.py
index d81902327a7e0a..839cdec68d573e 100644
--- a/Lib/test/test_with.py
+++ b/Lib/test/test_with.py
@@ -5,6 +5,7 @@
 __email__ = "mbland at acm dot org"
 
 import sys
+import traceback
 import unittest
 from collections import deque
 from contextlib import _GeneratorContextManager, contextmanager, nullcontext
@@ -170,7 +171,10 @@ def __exit__(self, *args):
         def shouldThrow():
             ct = EnterThrows()
             self.foo = None
-            with ct as self.foo:
+            # Ruff complains that we're redefining `self.foo` here,
+            # but the whole point of the test is to check that `self.foo`
+            # is *not* redefined (because `__enter__` raises)
+            with ct as self.foo:  # ruff: noqa: F811
                 pass
         self.assertRaises(RuntimeError, shouldThrow)
         self.assertEqual(self.foo, None)
@@ -251,7 +255,6 @@ def testInlineGeneratorBoundSyntax(self):
         self.assertAfterWithGeneratorInvariantsNoError(foo)
 
     def testInlineGeneratorBoundToExistingVariable(self):
-        foo = None
         with mock_contextmanager_generator() as foo:
             self.assertInWithGeneratorInvariants(foo)
         self.assertAfterWithGeneratorInvariantsNoError(foo)
@@ -749,5 +752,48 @@ def testEnterReturnsTuple(self):
             self.assertEqual(10, b1)
             self.assertEqual(20, b2)
 
+    def testExceptionLocation(self):
+        # The location of an exception raised from
+        # __init__, __enter__ or __exit__ of a context
+        # manager should be just the context manager expression,
+        # pinpointing the precise context manager in case there
+        # is more than one.
+
+        def init_raises():
+            try:
+                with self.Dummy(), self.InitRaises() as cm, self.Dummy() as d:
+                    pass
+            except Exception as e:
+                return e
+
+        def enter_raises():
+            try:
+                with self.EnterRaises(), self.Dummy() as d:
+                    pass
+            except Exception as e:
+                return e
+
+        def exit_raises():
+            try:
+                with self.ExitRaises(), self.Dummy() as d:
+                    pass
+            except Exception as e:
+                return e
+
+        for func, expected in [(init_raises, "self.InitRaises()"),
+                               (enter_raises, "self.EnterRaises()"),
+                               (exit_raises, "self.ExitRaises()"),
+                              ]:
+            with self.subTest(func):
+                exc = func()
+                f = traceback.extract_tb(exc.__traceback__)[0]
+                indent = 16
+                co = func.__code__
+                self.assertEqual(f.lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.end_lineno, co.co_firstlineno + 2)
+                self.assertEqual(f.line[f.colno - indent : f.end_colno - indent],
+                                 expected)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_xml_dom_xmlbuilder.py b/Lib/test/test_xml_dom_xmlbuilder.py
new file mode 100644
index 00000000000000..5f5f2eb328df9f
--- /dev/null
+++ b/Lib/test/test_xml_dom_xmlbuilder.py
@@ -0,0 +1,88 @@
+import io
+import unittest
+from http import client
+from test.test_httplib import FakeSocket
+from unittest import mock
+from xml.dom import getDOMImplementation, minidom, xmlbuilder
+
+SMALL_SAMPLE = b"""<?xml version="1.0"?>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xdc="http://www.xml.com/books">
+<!-- A comment -->
+<title>Introduction to XSL</title>
+<hr/>
+<p><xdc:author xdc:attrib="prefixed attribute" attrib="other attrib">A. Namespace</xdc:author></p>
+</html>"""
+
+
+class XMLBuilderTest(unittest.TestCase):
+    def test_entity_resolver(self):
+        body = (
+            b"HTTP/1.1 200 OK\r\nContent-Type: text/xml; charset=utf-8\r\n\r\n"
+            + SMALL_SAMPLE
+        )
+
+        sock = FakeSocket(body)
+        response = client.HTTPResponse(sock)
+        response.begin()
+        attrs = {"open.return_value": response}
+        opener = mock.Mock(**attrs)
+
+        resolver = xmlbuilder.DOMEntityResolver()
+
+        with mock.patch("urllib.request.build_opener") as mock_build:
+            mock_build.return_value = opener
+            source = resolver.resolveEntity(None, "http://example.com/2000/svg")
+
+        self.assertIsInstance(source, xmlbuilder.DOMInputSource)
+        self.assertIsNone(source.publicId)
+        self.assertEqual(source.systemId, "http://example.com/2000/svg")
+        self.assertEqual(source.baseURI, "http://example.com/2000/")
+        self.assertEqual(source.encoding, "utf-8")
+        self.assertIs(source.byteStream, response)
+
+        self.assertIsNone(source.characterStream)
+        self.assertIsNone(source.stringData)
+
+    def test_builder(self):
+        imp = getDOMImplementation()
+        self.assertIsInstance(imp, xmlbuilder.DOMImplementationLS)
+
+        builder = imp.createDOMBuilder(imp.MODE_SYNCHRONOUS, None)
+        self.assertIsInstance(builder, xmlbuilder.DOMBuilder)
+
+    def test_parse_uri(self):
+        body = (
+            b"HTTP/1.1 200 OK\r\nContent-Type: text/xml; charset=utf-8\r\n\r\n"
+            + SMALL_SAMPLE
+        )
+
+        sock = FakeSocket(body)
+        response = client.HTTPResponse(sock)
+        response.begin()
+        attrs = {"open.return_value": response}
+        opener = mock.Mock(**attrs)
+
+        with mock.patch("urllib.request.build_opener") as mock_build:
+            mock_build.return_value = opener
+
+            imp = getDOMImplementation()
+            builder = imp.createDOMBuilder(imp.MODE_SYNCHRONOUS, None)
+            document = builder.parseURI("http://example.com/2000/svg")
+
+        self.assertIsInstance(document, minidom.Document)
+        self.assertEqual(len(document.childNodes), 1)
+
+    def test_parse_with_systemId(self):
+        response = io.BytesIO(SMALL_SAMPLE)
+
+        with mock.patch("urllib.request.urlopen") as mock_open:
+            mock_open.return_value = response
+
+            imp = getDOMImplementation()
+            source = imp.createDOMInputSource()
+            builder = imp.createDOMBuilder(imp.MODE_SYNCHRONOUS, None)
+            source.systemId = "http://example.com/2000/svg"
+            document = builder.parse(source)
+
+        self.assertIsInstance(document, minidom.Document)
+        self.assertEqual(len(document.childNodes), 1)
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index bae61f754e75f5..ebec9d8f18a2f6 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -2423,6 +2423,22 @@ def test_39495_treebuilder_start(self):
         self.assertRaises(TypeError, ET.TreeBuilder().start, "tag")
         self.assertRaises(TypeError, ET.TreeBuilder().start, "tag", None)
 
+    def test_issue123213_correct_extend_exception(self):
+        # Does not hide the internal exception when extending the element
+        self.assertRaises(ZeroDivisionError, ET.Element('tag').extend,
+                          (1/0 for i in range(2)))
+
+        # Still raises the TypeError when extending with a non-iterable
+        self.assertRaises(TypeError, ET.Element('tag').extend, None)
+
+        # Preserves the TypeError message when extending with a generator
+        def f():
+            raise TypeError("mymessage")
+
+        self.assertRaisesRegex(
+            TypeError, 'mymessage',
+            ET.Element('tag').extend, (f() for i in range(2)))
+
 
 
 # --------------------------------------------------------------------
@@ -3748,6 +3764,22 @@ def test_setslice_negative_steps(self):
         e[1::-sys.maxsize<<64] = [ET.Element('d')]
         self.assertEqual(self._subelem_tags(e), ['a0', 'd', 'a2', 'a3'])
 
+    def test_issue123213_setslice_exception(self):
+        e = ET.Element('tag')
+        # Does not hide the internal exception when assigning to the element
+        with self.assertRaises(ZeroDivisionError):
+            e[:1] = (1/0 for i in range(2))
+
+        # Still raises the TypeError when assigning with a non-iterable
+        with self.assertRaises(TypeError):
+            e[:1] = None
+
+        # Preserve the original TypeError message when assigning.
+        def f():
+            raise TypeError("mymessage")
+
+        with self.assertRaisesRegex(TypeError, 'mymessage'):
+            e[:1] = (f() for i in range(2))
 
 class IOTest(unittest.TestCase):
     def test_encoding(self):
@@ -4088,7 +4120,7 @@ class BoolTest(unittest.TestCase):
     def test_warning(self):
         e = ET.fromstring('<a style="new"></a>')
         msg = (
-            r"Testing an element's truth value will raise an exception in "
+            r"Testing an element's truth value will always return True in "
             r"future versions.  "
             r"Use specific 'len\(elem\)' or 'elem is not None' test instead.")
         with self.assertWarnsRegex(DeprecationWarning, msg):
diff --git a/Lib/test/test_zipapp.py b/Lib/test/test_zipapp.py
index f1c6b2d97621ee..00a5ed6626ddc5 100644
--- a/Lib/test/test_zipapp.py
+++ b/Lib/test/test_zipapp.py
@@ -265,14 +265,15 @@ def test_write_shebang_to_fileobj(self):
         zipapp.create_archive(str(target), new_target, interpreter='python2.7')
         self.assertTrue(new_target.getvalue().startswith(b'#!python2.7\n'))
 
-    def test_read_from_pathobj(self):
-        # Test that we can copy an archive using a pathlib.Path object
+    def test_read_from_pathlike_obj(self):
+        # Test that we can copy an archive using a path-like object
         # for the source.
         source = self.tmpdir / 'source'
         source.mkdir()
         (source / '__main__.py').touch()
-        target1 = self.tmpdir / 'target1.pyz'
-        target2 = self.tmpdir / 'target2.pyz'
+        source = os_helper.FakePath(str(source))
+        target1 = os_helper.FakePath(str(self.tmpdir / 'target1.pyz'))
+        target2 = os_helper.FakePath(str(self.tmpdir / 'target2.pyz'))
         zipapp.create_archive(source, target1, interpreter='python')
         zipapp.create_archive(target1, target2, interpreter='python2.7')
         self.assertEqual(zipapp.get_interpreter(target2), 'python2.7')
diff --git a/Lib/test/test_zipfile/_path/test_complexity.py b/Lib/test/test_zipfile/_path/test_complexity.py
index fd7ce57551b7a5..b505dd7c376462 100644
--- a/Lib/test/test_zipfile/_path/test_complexity.py
+++ b/Lib/test/test_zipfile/_path/test_complexity.py
@@ -20,7 +20,7 @@ class TestComplexity(unittest.TestCase):
     @pytest.mark.flaky
     def test_implied_dirs_performance(self):
         best, others = big_o.big_o(
-            compose(consume, zipfile.CompleteDirs._implied_dirs),
+            compose(consume, zipfile._path.CompleteDirs._implied_dirs),
             lambda size: [
                 '/'.join(string.ascii_lowercase + str(n)) for n in range(size)
             ],
diff --git a/Lib/test/test_zipfile/_path/test_path.py b/Lib/test/test_zipfile/_path/test_path.py
index df5b8c9d8fea40..aba515536f0c1a 100644
--- a/Lib/test/test_zipfile/_path/test_path.py
+++ b/Lib/test/test_zipfile/_path/test_path.py
@@ -3,30 +3,37 @@
 import contextlib
 import pathlib
 import pickle
+import stat
 import sys
+import time
 import unittest
 import zipfile
 import zipfile._path
 
+from test.support.os_helper import temp_dir, FakePath
+
 from ._functools import compose
 from ._itertools import Counter
 
 from ._test_params import parameterize, Invoked
 
-from test.support.os_helper import temp_dir
-
 
 class jaraco:
     class itertools:
         Counter = Counter
 
 
+def _make_link(info: zipfile.ZipInfo):  # type: ignore[name-defined]
+    info.external_attr |= stat.S_IFLNK << 16
+
+
 def build_alpharep_fixture():
     """
     Create a zip file with this structure:
 
     .
     ├── a.txt
+    ├── n.txt (-> a.txt)
     ├── b
     │   ├── c.txt
     │   ├── d
@@ -47,6 +54,7 @@ def build_alpharep_fixture():
     - multiple files in a directory (b/c, b/f)
     - a directory containing only a directory (g/h)
     - a directory with files of different extensions (j/klm)
+    - a symlink (n) pointing to (a)
 
     "alpha" because it uses alphabet
     "rep" because it's a representative example
@@ -61,6 +69,9 @@ def build_alpharep_fixture():
     zf.writestr("j/k.bin", b"content of k")
     zf.writestr("j/l.baz", b"content of l")
     zf.writestr("j/m.bar", b"content of m")
+    zf.writestr("n.txt", b"a.txt")
+    _make_link(zf.infolist()[-1])
+
     zf.filename = "alpharep.zip"
     return zf
 
@@ -91,7 +102,7 @@ def zipfile_ondisk(self, alpharep):
     def test_iterdir_and_types(self, alpharep):
         root = zipfile.Path(alpharep)
         assert root.is_dir()
-        a, b, g, j = root.iterdir()
+        a, n, b, g, j = root.iterdir()
         assert a.is_file()
         assert b.is_dir()
         assert g.is_dir()
@@ -111,7 +122,7 @@ def test_is_file_missing(self, alpharep):
     @pass_alpharep
     def test_iterdir_on_file(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g, j = root.iterdir()
+        a, n, b, g, j = root.iterdir()
         with self.assertRaises(ValueError):
             a.iterdir()
 
@@ -126,7 +137,7 @@ def test_subdir_is_dir(self, alpharep):
     @pass_alpharep
     def test_open(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g, j = root.iterdir()
+        a, n, b, g, j = root.iterdir()
         with a.open(encoding="utf-8") as strm:
             data = strm.read()
         self.assertEqual(data, "content of a")
@@ -230,7 +241,7 @@ def test_open_missing_directory(self, alpharep):
     @pass_alpharep
     def test_read(self, alpharep):
         root = zipfile.Path(alpharep)
-        a, b, g, j = root.iterdir()
+        a, n, b, g, j = root.iterdir()
         assert a.read_text(encoding="utf-8") == "content of a"
         # Also check positional encoding arg (gh-101144).
         assert a.read_text("utf-8") == "content of a"
@@ -264,13 +275,13 @@ def test_pathlike_construction(self, alpharep):
         zipfile.Path should be constructable from a path-like object
         """
         zipfile_ondisk = self.zipfile_ondisk(alpharep)
-        pathlike = pathlib.Path(str(zipfile_ondisk))
+        pathlike = FakePath(str(zipfile_ondisk))
         zipfile.Path(pathlike)
 
     @pass_alpharep
     def test_traverse_pathlike(self, alpharep):
         root = zipfile.Path(alpharep)
-        root / pathlib.Path("a")
+        root / FakePath("a")
 
     @pass_alpharep
     def test_parent(self, alpharep):
@@ -296,7 +307,7 @@ def test_mutability(self, alpharep):
         reflect that change.
         """
         root = zipfile.Path(alpharep)
-        a, b, g, j = root.iterdir()
+        a, n, b, g, j = root.iterdir()
         alpharep.writestr('foo.txt', 'foo')
         alpharep.writestr('bar/baz.txt', 'baz')
         assert any(child.name == 'foo.txt' for child in root.iterdir())
@@ -465,6 +476,18 @@ def test_glob_recursive(self, alpharep):
 
         assert list(root.glob("**/*.txt")) == list(root.rglob("*.txt"))
 
+    @pass_alpharep
+    def test_glob_dirs(self, alpharep):
+        root = zipfile.Path(alpharep)
+        assert list(root.glob('b')) == [zipfile.Path(alpharep, "b/")]
+        assert list(root.glob('b*')) == [zipfile.Path(alpharep, "b/")]
+
+    @pass_alpharep
+    def test_glob_subdir(self, alpharep):
+        root = zipfile.Path(alpharep)
+        assert list(root.glob('g/h')) == [zipfile.Path(alpharep, "g/h/")]
+        assert list(root.glob('g*/h*')) == [zipfile.Path(alpharep, "g/h/")]
+
     @pass_alpharep
     def test_glob_subdirs(self, alpharep):
         root = zipfile.Path(alpharep)
@@ -513,12 +536,9 @@ def test_eq_hash(self, alpharep):
 
     @pass_alpharep
     def test_is_symlink(self, alpharep):
-        """
-        See python/cpython#82102 for symlink support beyond this object.
-        """
-
         root = zipfile.Path(alpharep)
-        assert not root.is_symlink()
+        assert not root.joinpath('a.txt').is_symlink()
+        assert root.joinpath('n.txt').is_symlink()
 
     @pass_alpharep
     def test_relative_to(self, alpharep):
@@ -539,12 +559,12 @@ def test_inheritance(self, alpharep):
         ['alpharep', 'path_type', 'subpath'],
         itertools.product(
             alpharep_generators,
-            [str, pathlib.Path],
+            [str, FakePath],
             ['', 'b/'],
         ),
     )
     def test_pickle(self, alpharep, path_type, subpath):
-        zipfile_ondisk = path_type(self.zipfile_ondisk(alpharep))
+        zipfile_ondisk = path_type(str(self.zipfile_ondisk(alpharep)))
 
         saved_1 = pickle.dumps(zipfile.Path(zipfile_ondisk, at=subpath))
         restored_1 = pickle.loads(saved_1)
@@ -570,3 +590,87 @@ def test_getinfo_missing(self, alpharep):
         zipfile.Path(alpharep)
         with self.assertRaises(KeyError):
             alpharep.getinfo('does-not-exist')
+
+    def test_malformed_paths(self):
+        """
+        Path should handle malformed paths gracefully.
+
+        Paths with leading slashes are not visible.
+
+        Paths with dots are treated like regular files.
+        """
+        data = io.BytesIO()
+        zf = zipfile.ZipFile(data, "w")
+        zf.writestr("/one-slash.txt", b"content")
+        zf.writestr("//two-slash.txt", b"content")
+        zf.writestr("../parent.txt", b"content")
+        zf.filename = ''
+        root = zipfile.Path(zf)
+        assert list(map(str, root.iterdir())) == ['../']
+        assert root.joinpath('..').joinpath('parent.txt').read_bytes() == b'content'
+
+    def test_unsupported_names(self):
+        """
+        Path segments with special characters are readable.
+
+        On some platforms or file systems, characters like
+        ``:`` and ``?`` are not allowed, but they are valid
+        in the zip file.
+        """
+        data = io.BytesIO()
+        zf = zipfile.ZipFile(data, "w")
+        zf.writestr("path?", b"content")
+        zf.writestr("V: NMS.flac", b"fLaC...")
+        zf.filename = ''
+        root = zipfile.Path(zf)
+        contents = root.iterdir()
+        assert next(contents).name == 'path?'
+        assert next(contents).name == 'V: NMS.flac'
+        assert root.joinpath('V: NMS.flac').read_bytes() == b"fLaC..."
+
+    def test_backslash_not_separator(self):
+        """
+        In a zip file, backslashes are not separators.
+        """
+        data = io.BytesIO()
+        zf = zipfile.ZipFile(data, "w")
+        zf.writestr(DirtyZipInfo.for_name("foo\\bar", zf), b"content")
+        zf.filename = ''
+        root = zipfile.Path(zf)
+        (first,) = root.iterdir()
+        assert not first.is_dir()
+        assert first.name == 'foo\\bar'
+
+    @pass_alpharep
+    def test_interface(self, alpharep):
+        from importlib.resources.abc import Traversable
+
+        zf = zipfile.Path(alpharep)
+        assert isinstance(zf, Traversable)
+
+
+class DirtyZipInfo(zipfile.ZipInfo):
+    """
+    Bypass name sanitization.
+    """
+
+    def __init__(self, filename, *args, **kwargs):
+        super().__init__(filename, *args, **kwargs)
+        self.filename = filename
+
+    @classmethod
+    def for_name(cls, name, archive):
+        """
+        Construct the same way that ZipFile.writestr does.
+
+        TODO: extract this functionality and re-use
+        """
+        self = cls(filename=name, date_time=time.localtime(time.time())[:6])
+        self.compress_type = archive.compression
+        self.compress_level = archive.compresslevel
+        if self.filename.endswith('/'):  # pragma: no cover
+            self.external_attr = 0o40775 << 16  # drwxrwxr-x
+            self.external_attr |= 0x10  # MS-DOS directory flag
+        else:
+            self.external_attr = 0o600 << 16  # ?rw-------
+        return self
diff --git a/Lib/test/test_zipfile/test_core.py b/Lib/test/test_zipfile/test_core.py
index 423974aada4ac1..4b56f6a380f219 100644
--- a/Lib/test/test_zipfile/test_core.py
+++ b/Lib/test/test_zipfile/test_core.py
@@ -1,3 +1,4 @@
+import _pyio
 import array
 import contextlib
 import importlib.util
@@ -1116,7 +1117,7 @@ def test_force_zip64(self):
         # Because this is hard to verify by parsing the data as a zip, the raw
         # bytes are checked to ensure that they line up with the zip spec.
         # The spec for this can be found at: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
-        # The relevent sections for this test are:
+        # The relevant sections for this test are:
         #  - 4.3.7 for local file header
         #  - 4.5.3 for zip64 extra field
 
@@ -1187,7 +1188,7 @@ def test_unseekable_zip_known_filesize(self):
         # in as a zip, this test looks at the raw bytes created to ensure that
         # the correct data has been generated.
         # The spec for this can be found at: https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT
-        # The relevent sections for this test are:
+        # The relevant sections for this test are:
         #  - 4.3.7 for local file header
         #  - 4.3.9 for the data descriptor
         #  - 4.5.3 for zip64 extra field
@@ -2327,6 +2328,18 @@ def test_read_after_seek(self):
                 fp.seek(1, os.SEEK_CUR)
                 self.assertEqual(fp.read(-1), b'men!')
 
+    def test_uncompressed_interleaved_seek_read(self):
+        # gh-127847: Make sure the position in the archive is correct
+        # in the special case of seeking in a ZIP_STORED entry.
+        with zipfile.ZipFile(TESTFN, "w") as zipf:
+            zipf.writestr("a.txt", "123")
+            zipf.writestr("b.txt", "456")
+        with zipfile.ZipFile(TESTFN, "r") as zipf:
+            with zipf.open("a.txt", "r") as a, zipf.open("b.txt", "r") as b:
+                self.assertEqual(a.read(1), b"1")
+                self.assertEqual(b.seek(1), 1)
+                self.assertEqual(b.read(1), b"5")
+
     @requires_bz2()
     def test_decompress_without_3rd_party_library(self):
         data = b'PK\x05\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
@@ -3442,5 +3455,87 @@ def test_too_short(self):
             b"zzz", zipfile._Extra.strip(b"zzz", (self.ZIP64_EXTRA,)))
 
 
+class StatIO(_pyio.BytesIO):
+    """Buffer which remembers the number of bytes that were read."""
+
+    def __init__(self):
+        super().__init__()
+        self.bytes_read = 0
+
+    def read(self, size=-1):
+        bs = super().read(size)
+        self.bytes_read += len(bs)
+        return bs
+
+
+class StoredZipExtFileRandomReadTest(unittest.TestCase):
+    """Tests whether an uncompressed, unencrypted zip entry can be randomly
+    seek and read without reading redundant bytes."""
+    def test_stored_seek_and_read(self):
+
+        sio = StatIO()
+        # 20000 bytes
+        txt = b'0123456789' * 2000
+
+        # The seek length must be greater than ZipExtFile.MIN_READ_SIZE
+        # as `ZipExtFile._read2()` reads in blocks of this size and we
+        # need to seek out of the buffered data
+        read_buffer_size = zipfile.ZipExtFile.MIN_READ_SIZE
+        self.assertGreaterEqual(10002, read_buffer_size)  # for forward seek test
+        self.assertGreaterEqual(5003, read_buffer_size)  # for backward seek test
+        # The read length must be less than MIN_READ_SIZE, since we assume that
+        # only 1 block is read in the test.
+        read_length = 100
+        self.assertGreaterEqual(read_buffer_size, read_length)  # for read() calls
+
+        with zipfile.ZipFile(sio, "w", compression=zipfile.ZIP_STORED) as zipf:
+            zipf.writestr("foo.txt", txt)
+
+        # check random seek and read on a file
+        with zipfile.ZipFile(sio, "r") as zipf:
+            with zipf.open("foo.txt", "r") as fp:
+                # Test this optimized read hasn't rewound and read from the
+                # start of the file (as in the case of the unoptimized path)
+
+                # forward seek
+                old_count = sio.bytes_read
+                forward_seek_len = 10002
+                current_pos = 0
+                fp.seek(forward_seek_len, os.SEEK_CUR)
+                current_pos += forward_seek_len
+                self.assertEqual(fp.tell(), current_pos)
+                self.assertEqual(fp._left, fp._compress_left)
+                arr = fp.read(read_length)
+                current_pos += read_length
+                self.assertEqual(fp.tell(), current_pos)
+                self.assertEqual(arr, txt[current_pos - read_length:current_pos])
+                self.assertEqual(fp._left, fp._compress_left)
+                read_count = sio.bytes_read - old_count
+                self.assertLessEqual(read_count, read_buffer_size)
+
+                # backward seek
+                old_count = sio.bytes_read
+                backward_seek_len = 5003
+                fp.seek(-backward_seek_len, os.SEEK_CUR)
+                current_pos -= backward_seek_len
+                self.assertEqual(fp.tell(), current_pos)
+                self.assertEqual(fp._left, fp._compress_left)
+                arr = fp.read(read_length)
+                current_pos += read_length
+                self.assertEqual(fp.tell(), current_pos)
+                self.assertEqual(arr, txt[current_pos - read_length:current_pos])
+                self.assertEqual(fp._left, fp._compress_left)
+                read_count = sio.bytes_read - old_count
+                self.assertLessEqual(read_count, read_buffer_size)
+
+                # eof flags test
+                fp.seek(0, os.SEEK_END)
+                fp.seek(12345, os.SEEK_SET)
+                current_pos = 12345
+                arr = fp.read(read_length)
+                current_pos += read_length
+                self.assertEqual(arr, txt[current_pos - read_length:current_pos])
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/Lib/test/test_zipimport.py b/Lib/test/test_zipimport.py
index e9c3218d2bb39e..236b0169469ae3 100644
--- a/Lib/test/test_zipimport.py
+++ b/Lib/test/test_zipimport.py
@@ -52,8 +52,11 @@ def module_path_to_dotted_name(path):
 
 
 TESTMOD = "ziptestmodule"
+TESTMOD2 = "ziptestmodule2"
+TESTMOD3 = "ziptestmodule3"
 TESTPACK = "ziptestpackage"
 TESTPACK2 = "ziptestpackage2"
+TESTPACK3 = "ziptestpackage3"
 TEMP_DIR = os.path.abspath("junk95142")
 TEMP_ZIP = os.path.abspath("junk95142.zip")
 TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "zipimport_data")
@@ -95,8 +98,10 @@ def makeTree(self, files, dirName=TEMP_DIR):
         # defined by files under the directory dirName.
         self.addCleanup(os_helper.rmtree, dirName)
 
-        for name, (mtime, data) in files.items():
-            path = os.path.join(dirName, name)
+        for name, data in files.items():
+            if isinstance(data, tuple):
+                mtime, data = data
+            path = os.path.join(dirName, *name.split('/'))
             if path[-1] == os.sep:
                 if not os.path.isdir(path):
                     os.makedirs(path)
@@ -107,22 +112,18 @@ def makeTree(self, files, dirName=TEMP_DIR):
                 with open(path, 'wb') as fp:
                     fp.write(data)
 
-    def makeZip(self, files, zipName=TEMP_ZIP, **kw):
+    def makeZip(self, files, zipName=TEMP_ZIP, *,
+                comment=None, file_comment=None, stuff=None, prefix='', **kw):
         # Create a zip archive based set of modules/packages
-        # defined by files in the zip file zipName.  If the
-        # key 'stuff' exists in kw it is prepended to the archive.
+        # defined by files in the zip file zipName.
+        # If stuff is not None, it is prepended to the archive.
         self.addCleanup(os_helper.unlink, zipName)
 
-        with ZipFile(zipName, "w") as z:
-            for name, (mtime, data) in files.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                z.writestr(zinfo, data)
-            comment = kw.get("comment", None)
+        with ZipFile(zipName, "w", compression=self.compression) as z:
+            self.writeZip(z, files, file_comment=file_comment, prefix=prefix)
             if comment is not None:
                 z.comment = comment
 
-        stuff = kw.get("stuff", None)
         if stuff is not None:
             # Prepend 'stuff' to the start of the zipfile
             with open(zipName, "rb") as f:
@@ -131,26 +132,47 @@ def makeZip(self, files, zipName=TEMP_ZIP, **kw):
                 f.write(stuff)
                 f.write(data)
 
+    def writeZip(self, z, files, *, file_comment=None, prefix=''):
+        for name, data in files.items():
+            if isinstance(data, tuple):
+                mtime, data = data
+            else:
+                mtime = NOW
+            name = name.replace(os.sep, '/')
+            zinfo = ZipInfo(prefix + name, time.localtime(mtime))
+            zinfo.compress_type = self.compression
+            if file_comment is not None:
+                zinfo.comment = file_comment
+            if data is None:
+                zinfo.CRC = 0
+                z.mkdir(zinfo)
+            else:
+                assert name[-1] != '/'
+                z.writestr(zinfo, data)
+
     def getZip64Files(self):
         # This is the simplest way to make zipfile generate the zip64 EOCD block
-        return {f"f{n}.py": (NOW, test_src) for n in range(65537)}
+        return {f"f{n}.py": test_src for n in range(65537)}
 
     def doTest(self, expected_ext, files, *modules, **kw):
+        if 'prefix' not in kw:
+            kw['prefix'] = 'pre/fix/'
         self.makeZip(files, **kw)
         self.doTestWithPreBuiltZip(expected_ext, *modules, **kw)
 
-    def doTestWithPreBuiltZip(self, expected_ext, *modules, **kw):
-        sys.path.insert(0, TEMP_ZIP)
+    def doTestWithPreBuiltZip(self, expected_ext, *modules,
+                              call=None, prefix='', **kw):
+        zip_path = os.path.join(TEMP_ZIP, *prefix.split('/')[:-1])
+        sys.path.insert(0, zip_path)
 
         mod = importlib.import_module(".".join(modules))
 
-        call = kw.get('call')
         if call is not None:
             call(mod)
 
         if expected_ext:
             file = mod.get_file()
-            self.assertEqual(file, os.path.join(TEMP_ZIP,
+            self.assertEqual(file, os.path.join(zip_path,
                                  *modules) + expected_ext)
 
     def testAFakeZlib(self):
@@ -176,7 +198,7 @@ def testAFakeZlib(self):
             self.skipTest('zlib is a builtin module')
         if "zlib" in sys.modules:
             del sys.modules["zlib"]
-        files = {"zlib.py": (NOW, test_src)}
+        files = {"zlib.py": test_src}
         try:
             self.doTest(".py", files, "zlib")
         except ImportError:
@@ -187,16 +209,16 @@ def testAFakeZlib(self):
                 self.fail("expected test to raise ImportError")
 
     def testPy(self):
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD)
 
     def testPyc(self):
-        files = {TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files = {TESTMOD + pyc_ext: test_pyc}
         self.doTest(pyc_ext, files, TESTMOD)
 
     def testBoth(self):
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files = {TESTMOD + ".py": test_src,
+                 TESTMOD + pyc_ext: test_pyc}
         self.doTest(pyc_ext, files, TESTMOD)
 
     def testUncheckedHashBasedPyc(self):
@@ -229,22 +251,22 @@ def check(mod):
         self.doTest(None, files, TESTMOD, call=check)
 
     def testEmptyPy(self):
-        files = {TESTMOD + ".py": (NOW, "")}
+        files = {TESTMOD + ".py": ""}
         self.doTest(None, files, TESTMOD)
 
     def testBadMagic(self):
         # make pyc magic word invalid, forcing loading from .py
         badmagic_pyc = bytearray(test_pyc)
         badmagic_pyc[0] ^= 0x04  # flip an arbitrary bit
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
+        files = {TESTMOD + ".py": test_src,
+                 TESTMOD + pyc_ext: badmagic_pyc}
         self.doTest(".py", files, TESTMOD)
 
     def testBadMagic2(self):
         # make pyc magic word invalid, causing an ImportError
         badmagic_pyc = bytearray(test_pyc)
         badmagic_pyc[0] ^= 0x04  # flip an arbitrary bit
-        files = {TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
+        files = {TESTMOD + pyc_ext: badmagic_pyc}
         try:
             self.doTest(".py", files, TESTMOD)
             self.fail("This should not be reached")
@@ -257,22 +279,22 @@ def testBadMTime(self):
         # flip the second bit -- not the first as that one isn't stored in the
         # .py's mtime in the zip archive.
         badtime_pyc[11] ^= 0x02
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 TESTMOD + pyc_ext: (NOW, badtime_pyc)}
+        files = {TESTMOD + ".py": test_src,
+                 TESTMOD + pyc_ext: badtime_pyc}
         self.doTest(".py", files, TESTMOD)
 
     def test2038MTime(self):
         # Make sure we can handle mtimes larger than what a 32-bit signed number
         # can hold.
         twenty_thirty_eight_pyc = make_pyc(test_co, 2**32 - 1, len(test_src))
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 TESTMOD + pyc_ext: (NOW, twenty_thirty_eight_pyc)}
+        files = {TESTMOD + ".py": test_src,
+                 TESTMOD + pyc_ext: twenty_thirty_eight_pyc}
         self.doTest(".py", files, TESTMOD)
 
     def testPackage(self):
         packdir = TESTPACK + os.sep
-        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files = {packdir + "__init__" + pyc_ext: test_pyc,
+                 packdir + TESTMOD + pyc_ext: test_pyc}
         self.doTest(pyc_ext, files, TESTPACK, TESTMOD)
 
     def testSubPackage(self):
@@ -280,9 +302,9 @@ def testSubPackage(self):
         # archives.
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files = {packdir + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc}
         self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
 
     def testSubNamespacePackage(self):
@@ -291,9 +313,9 @@ def testSubNamespacePackage(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
         # The first two files are just directory entries (so have no data).
-        files = {packdir: (NOW, ""),
-                 packdir2: (NOW, ""),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files = {packdir: None,
+                 packdir2: None,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc}
         self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
 
     def testMixedNamespacePackage(self):
@@ -301,19 +323,19 @@ def testMixedNamespacePackage(self):
         # real filesystem and a zip archive.
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        packdir3 = packdir2 + TESTPACK + '3' + os.sep
-        files1 = {packdir: (NOW, ""),
-                  packdir + TESTMOD + pyc_ext: (NOW, test_pyc),
-                  packdir2: (NOW, ""),
-                  packdir3: (NOW, ""),
-                  packdir3 + TESTMOD + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + '3' + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
-        files2 = {packdir: (NOW, ""),
-                  packdir + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
-                  packdir2: (NOW, ""),
-                  packdir2 + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        packdir3 = packdir2 + TESTPACK3 + os.sep
+        files1 = {packdir: None,
+                  packdir + TESTMOD + pyc_ext: test_pyc,
+                  packdir2: None,
+                  packdir3: None,
+                  packdir3 + TESTMOD + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD3 + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD + pyc_ext: test_pyc}
+        files2 = {packdir: None,
+                  packdir + TESTMOD2 + pyc_ext: test_pyc,
+                  packdir2: None,
+                  packdir2 + TESTMOD2 + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD + pyc_ext: test_pyc}
 
         zip1 = os.path.abspath("path1.zip")
         self.makeZip(files1, zip1)
@@ -346,8 +368,8 @@ def testMixedNamespacePackage(self):
         mod = importlib.import_module('.'.join((TESTPACK, TESTMOD)))
         self.assertEqual("path1.zip", mod.__file__.split(os.sep)[-3])
 
-        # And TESTPACK/(TESTMOD + '2') only exists in path2.
-        mod = importlib.import_module('.'.join((TESTPACK, TESTMOD + '2')))
+        # And TESTPACK/(TESTMOD2) only exists in path2.
+        mod = importlib.import_module('.'.join((TESTPACK, TESTMOD2)))
         self.assertEqual(os.path.basename(TEMP_DIR),
                          mod.__file__.split(os.sep)[-3])
 
@@ -364,13 +386,13 @@ def testMixedNamespacePackage(self):
         self.assertEqual(os.path.basename(TEMP_DIR),
                          mod.__file__.split(os.sep)[-4])
 
-        # subpkg.TESTMOD + '2' only exists in zip2.
-        mod = importlib.import_module('.'.join((subpkg, TESTMOD + '2')))
+        # subpkg.TESTMOD2 only exists in zip2.
+        mod = importlib.import_module('.'.join((subpkg, TESTMOD2)))
         self.assertEqual(os.path.basename(TEMP_DIR),
                          mod.__file__.split(os.sep)[-4])
 
-        # Finally subpkg.TESTMOD + '3' only exists in zip1.
-        mod = importlib.import_module('.'.join((subpkg, TESTMOD + '3')))
+        # Finally subpkg.TESTMOD3 only exists in zip1.
+        mod = importlib.import_module('.'.join((subpkg, TESTMOD3)))
         self.assertEqual('path1.zip', mod.__file__.split(os.sep)[-4])
 
     def testNamespacePackage(self):
@@ -378,22 +400,22 @@ def testNamespacePackage(self):
         # archives.
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        packdir3 = packdir2 + TESTPACK + '3' + os.sep
-        files1 = {packdir: (NOW, ""),
-                  packdir + TESTMOD + pyc_ext: (NOW, test_pyc),
-                  packdir2: (NOW, ""),
-                  packdir3: (NOW, ""),
-                  packdir3 + TESTMOD + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + '3' + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        packdir3 = packdir2 + TESTPACK3 + os.sep
+        files1 = {packdir: None,
+                  packdir + TESTMOD + pyc_ext: test_pyc,
+                  packdir2: None,
+                  packdir3: None,
+                  packdir3 + TESTMOD + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD3 + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD + pyc_ext: test_pyc}
         zip1 = os.path.abspath("path1.zip")
         self.makeZip(files1, zip1)
 
-        files2 = {packdir: (NOW, ""),
-                  packdir + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
-                  packdir2: (NOW, ""),
-                  packdir2 + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
-                  packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
+        files2 = {packdir: None,
+                  packdir + TESTMOD2 + pyc_ext: test_pyc,
+                  packdir2: None,
+                  packdir2 + TESTMOD2 + pyc_ext: test_pyc,
+                  packdir2 + TESTMOD + pyc_ext: test_pyc}
         zip2 = os.path.abspath("path2.zip")
         self.makeZip(files2, zip2)
 
@@ -422,8 +444,8 @@ def testNamespacePackage(self):
         mod = importlib.import_module('.'.join((TESTPACK, TESTMOD)))
         self.assertEqual("path1.zip", mod.__file__.split(os.sep)[-3])
 
-        # And TESTPACK/(TESTMOD + '2') only exists in path2.
-        mod = importlib.import_module('.'.join((TESTPACK, TESTMOD + '2')))
+        # And TESTPACK/(TESTMOD2) only exists in path2.
+        mod = importlib.import_module('.'.join((TESTPACK, TESTMOD2)))
         self.assertEqual("path2.zip", mod.__file__.split(os.sep)[-3])
 
         # One level deeper...
@@ -438,29 +460,22 @@ def testNamespacePackage(self):
         mod = importlib.import_module('.'.join((subpkg, TESTMOD)))
         self.assertEqual('path2.zip', mod.__file__.split(os.sep)[-4])
 
-        # subpkg.TESTMOD + '2' only exists in zip2.
-        mod = importlib.import_module('.'.join((subpkg, TESTMOD + '2')))
+        # subpkg.TESTMOD2 only exists in zip2.
+        mod = importlib.import_module('.'.join((subpkg, TESTMOD2)))
         self.assertEqual('path2.zip', mod.__file__.split(os.sep)[-4])
 
-        # Finally subpkg.TESTMOD + '3' only exists in zip1.
-        mod = importlib.import_module('.'.join((subpkg, TESTMOD + '3')))
+        # Finally subpkg.TESTMOD3 only exists in zip1.
+        mod = importlib.import_module('.'.join((subpkg, TESTMOD3)))
         self.assertEqual('path1.zip', mod.__file__.split(os.sep)[-4])
 
     def testZipImporterMethods(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc),
-                 "spam" + pyc_ext: (NOW, test_pyc)}
-
-        self.addCleanup(os_helper.unlink, TEMP_ZIP)
-        with ZipFile(TEMP_ZIP, "w") as z:
-            for name, (mtime, data) in files.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"spam"
-                z.writestr(zinfo, data)
+        files = {packdir + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc,
+                 "spam" + pyc_ext: test_pyc}
+        self.makeZip(files, file_comment=b"spam")
 
         zi = zipimport.zipimporter(TEMP_ZIP)
         self.assertEqual(zi.archive, TEMP_ZIP)
@@ -516,17 +531,11 @@ def testZipImporterMethods(self):
     def testInvalidateCaches(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc),
-                 "spam" + pyc_ext: (NOW, test_pyc)}
-        self.addCleanup(os_helper.unlink, TEMP_ZIP)
-        with ZipFile(TEMP_ZIP, "w") as z:
-            for name, (mtime, data) in files.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"spam"
-                z.writestr(zinfo, data)
+        files = {packdir + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc,
+                 "spam" + pyc_ext: test_pyc}
+        self.makeZip(files, file_comment=b"spam")
 
         zi = zipimport.zipimporter(TEMP_ZIP)
         self.assertEqual(zi._get_files().keys(), files.keys())
@@ -534,14 +543,10 @@ def testInvalidateCaches(self):
         zi.invalidate_caches()
         self.assertEqual(zi._get_files().keys(), files.keys())
         # Add a new file to the ZIP archive
-        newfile = {"spam2" + pyc_ext: (NOW, test_pyc)}
+        newfile = {"spam2" + pyc_ext: test_pyc}
         files.update(newfile)
-        with ZipFile(TEMP_ZIP, "a") as z:
-            for name, (mtime, data) in newfile.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"spam"
-                z.writestr(zinfo, data)
+        with ZipFile(TEMP_ZIP, "a", compression=self.compression) as z:
+            self.writeZip(z, newfile, file_comment=b"spam")
         # Check that we can detect the new file after invalidating the cache
         zi.invalidate_caches()
         self.assertEqual(zi._get_files().keys(), files.keys())
@@ -558,17 +563,11 @@ def testInvalidateCaches(self):
     def testInvalidateCachesWithMultipleZipimports(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc),
-                 "spam" + pyc_ext: (NOW, test_pyc)}
-        self.addCleanup(os_helper.unlink, TEMP_ZIP)
-        with ZipFile(TEMP_ZIP, "w") as z:
-            for name, (mtime, data) in files.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"spam"
-                z.writestr(zinfo, data)
+        files = {packdir + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc,
+                 "spam" + pyc_ext: test_pyc}
+        self.makeZip(files, file_comment=b"spam")
 
         zi = zipimport.zipimporter(TEMP_ZIP)
         self.assertEqual(zi._get_files().keys(), files.keys())
@@ -576,14 +575,10 @@ def testInvalidateCachesWithMultipleZipimports(self):
         zi2 = zipimport.zipimporter(TEMP_ZIP)
         self.assertEqual(zi2._get_files().keys(), files.keys())
         # Add a new file to the ZIP archive to make the cache wrong.
-        newfile = {"spam2" + pyc_ext: (NOW, test_pyc)}
+        newfile = {"spam2" + pyc_ext: test_pyc}
         files.update(newfile)
-        with ZipFile(TEMP_ZIP, "a") as z:
-            for name, (mtime, data) in newfile.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"spam"
-                z.writestr(zinfo, data)
+        with ZipFile(TEMP_ZIP, "a", compression=self.compression) as z:
+            self.writeZip(z, newfile, file_comment=b"spam")
         # Invalidate the cache of the first zipimporter.
         zi.invalidate_caches()
         # Check that the second zipimporter detects the new file and isn't using a stale cache.
@@ -595,16 +590,9 @@ def testInvalidateCachesWithMultipleZipimports(self):
     def testZipImporterMethodsInSubDirectory(self):
         packdir = TESTPACK + os.sep
         packdir2 = packdir + TESTPACK2 + os.sep
-        files = {packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
-                 packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
-
-        self.addCleanup(os_helper.unlink, TEMP_ZIP)
-        with ZipFile(TEMP_ZIP, "w") as z:
-            for name, (mtime, data) in files.items():
-                zinfo = ZipInfo(name, time.localtime(mtime))
-                zinfo.compress_type = self.compression
-                zinfo.comment = b"eggs"
-                z.writestr(zinfo, data)
+        files = {packdir2 + "__init__" + pyc_ext: test_pyc,
+                 packdir2 + TESTMOD + pyc_ext: test_pyc}
+        self.makeZip(files, file_comment=b"eggs")
 
         zi = zipimport.zipimporter(TEMP_ZIP + os.sep + packdir)
         self.assertEqual(zi.archive, TEMP_ZIP)
@@ -669,9 +657,9 @@ def get_file():
         if __loader__.get_data("some.data") != b"some data":
             raise AssertionError("bad data")\n"""
         pyc = make_pyc(compile(src, "<???>", "exec"), NOW, len(src))
-        files = {TESTMOD + pyc_ext: (NOW, pyc),
-                 "some.data": (NOW, "some data")}
-        self.doTest(pyc_ext, files, TESTMOD)
+        files = {TESTMOD + pyc_ext: pyc,
+                 "some.data": "some data"}
+        self.doTest(pyc_ext, files, TESTMOD, prefix='')
 
     def testDefaultOptimizationLevel(self):
         # zipimport should use the default optimization level (#28131)
@@ -679,7 +667,7 @@ def testDefaultOptimizationLevel(self):
         def test(val):
             assert(val)
             return val\n"""
-        files = {TESTMOD + '.py': (NOW, src)}
+        files = {TESTMOD + '.py': src}
         self.makeZip(files)
         sys.path.insert(0, TEMP_ZIP)
         mod = importlib.import_module(TESTMOD)
@@ -692,7 +680,7 @@ def test(val):
     def testImport_WithStuff(self):
         # try importing from a zipfile which contains additional
         # stuff at the beginning of the file
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD,
                     stuff=b"Some Stuff"*31)
 
@@ -700,18 +688,18 @@ def assertModuleSource(self, module):
         self.assertEqual(inspect.getsource(module), test_src)
 
     def testGetSource(self):
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD, call=self.assertModuleSource)
 
     def testGetCompiledSource(self):
         pyc = make_pyc(compile(test_src, "<???>", "exec"), NOW, len(test_src))
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 TESTMOD + pyc_ext: (NOW, pyc)}
+        files = {TESTMOD + ".py": test_src,
+                 TESTMOD + pyc_ext: pyc}
         self.doTest(pyc_ext, files, TESTMOD, call=self.assertModuleSource)
 
     def runDoctest(self, callback):
-        files = {TESTMOD + ".py": (NOW, test_src),
-                 "xyz.txt": (NOW, ">>> log.append(True)\n")}
+        files = {TESTMOD + ".py": test_src,
+                 "xyz.txt": ">>> log.append(True)\n"}
         self.doTest(".py", files, TESTMOD, call=callback)
 
     def doDoctestFile(self, module):
@@ -763,29 +751,21 @@ def doTraceback(self, module):
             raise AssertionError("This ought to be impossible")
 
     def testTraceback(self):
-        files = {TESTMOD + ".py": (NOW, raise_src)}
+        files = {TESTMOD + ".py": raise_src}
         self.doTest(None, files, TESTMOD, call=self.doTraceback)
 
     @unittest.skipIf(os_helper.TESTFN_UNENCODABLE is None,
                      "need an unencodable filename")
     def testUnencodable(self):
         filename = os_helper.TESTFN_UNENCODABLE + ".zip"
-        self.addCleanup(os_helper.unlink, filename)
-        with ZipFile(filename, "w") as z:
-            zinfo = ZipInfo(TESTMOD + ".py", time.localtime(NOW))
-            zinfo.compress_type = self.compression
-            z.writestr(zinfo, test_src)
+        self.makeZip({TESTMOD + ".py": test_src}, filename)
         spec = zipimport.zipimporter(filename).find_spec(TESTMOD)
         mod = importlib.util.module_from_spec(spec)
         spec.loader.exec_module(mod)
 
     def testBytesPath(self):
         filename = os_helper.TESTFN + ".zip"
-        self.addCleanup(os_helper.unlink, filename)
-        with ZipFile(filename, "w") as z:
-            zinfo = ZipInfo(TESTMOD + ".py", time.localtime(NOW))
-            zinfo.compress_type = self.compression
-            z.writestr(zinfo, test_src)
+        self.makeZip({TESTMOD + ".py": test_src}, filename)
 
         zipimport.zipimporter(filename)
         with self.assertRaises(TypeError):
@@ -796,15 +776,15 @@ def testBytesPath(self):
             zipimport.zipimporter(memoryview(os.fsencode(filename)))
 
     def testComment(self):
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD, comment=b"comment")
 
     def testBeginningCruftAndComment(self):
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD, stuff=b"cruft" * 64, comment=b"hi")
 
     def testLargestPossibleComment(self):
-        files = {TESTMOD + ".py": (NOW, test_src)}
+        files = {TESTMOD + ".py": test_src}
         self.doTest(".py", files, TESTMOD, comment=b"c" * ((1 << 16) - 1))
 
     def testZip64(self):
@@ -822,7 +802,7 @@ def testZip64LargeFile(self):
             "to run"
         )
 
-        # N.B.: We do alot of gymnastics below in the ZIP_STORED case to save
+        # N.B.: We do a lot of gymnastics below in the ZIP_STORED case to save
         # and reconstruct a sparse zip on systems that support sparse files.
         # Instead of creating a ~8GB zip file mainly consisting of null bytes
         # for every run of the test, we create the zip once and save off the
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index ef02c64f886f8a..4d97fe56f3a094 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -6,7 +6,7 @@
 import pickle
 import random
 import sys
-from test.support import bigmemtest, _1G, _4G, skip_on_s390x
+from test.support import bigmemtest, _1G, _4G, is_s390x
 
 
 zlib = import_helper.import_module('zlib')
@@ -33,8 +33,9 @@ def _zlib_runtime_version_tuple(zlib_version=zlib.ZLIB_RUNTIME_VERSION):
 ZLIB_RUNTIME_VERSION_TUPLE = _zlib_runtime_version_tuple()
 
 
-# bpo-46623: On s390x, when a hardware accelerator is used, using different
-# ways to compress data with zlib can produce different compressed data.
+# bpo-46623: When a hardware accelerator is used (currently only on s390x),
+# using different ways to compress data with zlib can produce different
+# compressed data.
 # Simplified test_pair() code:
 #
 #   def func1(data):
@@ -57,8 +58,10 @@ def _zlib_runtime_version_tuple(zlib_version=zlib.ZLIB_RUNTIME_VERSION):
 #
 #   zlib.decompress(func1(data)) == zlib.decompress(func2(data)) == data
 #
-# Make the assumption that s390x always has an accelerator to simplify the skip
-# condition.
+# To simplify the skip condition, make the assumption that s390x always has an
+# accelerator, and nothing else has it.
+HW_ACCELERATED = is_s390x
+
 
 class VersionTestCase(unittest.TestCase):
 
@@ -223,12 +226,14 @@ def test_keywords(self):
                                          bufsize=zlib.DEF_BUF_SIZE),
                          HAMLET_SCENE)
 
-    @skip_on_s390x
     def test_speech128(self):
         # compress more data
         data = HAMLET_SCENE * 128
         x = zlib.compress(data)
-        self.assertEqual(zlib.compress(bytearray(data)), x)
+        # With hardware acceleration, the compressed bytes
+        # might not be identical.
+        if not HW_ACCELERATED:
+            self.assertEqual(zlib.compress(bytearray(data)), x)
         for ob in x, bytearray(x):
             self.assertEqual(zlib.decompress(ob), data)
 
@@ -275,7 +280,6 @@ def test_64bit_compress(self, size):
 
 class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
     # Test compression object
-    @skip_on_s390x
     def test_pair(self):
         # straightforward compress/decompress objects
         datasrc = HAMLET_SCENE * 128
@@ -286,7 +290,10 @@ def test_pair(self):
             x1 = co.compress(data)
             x2 = co.flush()
             self.assertRaises(zlib.error, co.flush) # second flush should not work
-            self.assertEqual(x1 + x2, datazip)
+            # With hardware acceleration, the compressed bytes might not
+            # be identical.
+            if not HW_ACCELERATED:
+                self.assertEqual(x1 + x2, datazip)
         for v1, v2 in ((x1, x2), (bytearray(x1), bytearray(x2))):
             dco = zlib.decompressobj()
             y1 = dco.decompress(v1 + v2)
@@ -498,20 +505,16 @@ def test_flushes(self):
 
         for sync in sync_opt:
             for level in range(10):
-                try:
+                with self.subTest(sync=sync, level=level):
                     obj = zlib.compressobj( level )
                     a = obj.compress( data[:3000] )
                     b = obj.flush( sync )
                     c = obj.compress( data[3000:] )
                     d = obj.flush()
-                except:
-                    print("Error for flush mode={}, level={}"
-                          .format(sync, level))
-                    raise
-                self.assertEqual(zlib.decompress(b''.join([a,b,c,d])),
-                                 data, ("Decompress failed: flush "
-                                        "mode=%i, level=%i") % (sync, level))
-                del obj
+                    self.assertEqual(zlib.decompress(b''.join([a,b,c,d])),
+                                     data, ("Decompress failed: flush "
+                                            "mode=%i, level=%i") % (sync, level))
+                    del obj
 
     @unittest.skipUnless(hasattr(zlib, 'Z_SYNC_FLUSH'),
                          'requires zlib.Z_SYNC_FLUSH')
diff --git a/Lib/test/test_zoneinfo/test_zoneinfo.py b/Lib/test/test_zoneinfo/test_zoneinfo.py
index 8414721555731e..8bcd6d2e9951b9 100644
--- a/Lib/test/test_zoneinfo/test_zoneinfo.py
+++ b/Lib/test/test_zoneinfo/test_zoneinfo.py
@@ -17,7 +17,7 @@
 from datetime import date, datetime, time, timedelta, timezone
 from functools import cached_property
 
-from test.support import MISSING_C_DOCSTRINGS
+from test.support import MISSING_C_DOCSTRINGS, requires_gil_enabled
 from test.test_zoneinfo import _support as test_support
 from test.test_zoneinfo._support import OS_ENV_LOCK, TZPATH_TEST_LOCK, ZoneInfoTestBase
 from test.support.import_helper import import_module, CleanImport
@@ -1931,6 +1931,7 @@ def test_cache_location(self):
         self.assertFalse(hasattr(c_zoneinfo.ZoneInfo, "_weak_cache"))
         self.assertTrue(hasattr(py_zoneinfo.ZoneInfo, "_weak_cache"))
 
+    @requires_gil_enabled("gh-117783: types may be immortalized")
     def test_gc_tracked(self):
         import gc
 
diff --git a/Lib/test/translationdata/argparse/msgids.txt b/Lib/test/translationdata/argparse/msgids.txt
new file mode 100644
index 00000000000000..97416aad520271
--- /dev/null
+++ b/Lib/test/translationdata/argparse/msgids.txt
@@ -0,0 +1,40 @@
+ (default: %(default)s)
+%(heading)s:
+%(prog)s: error: %(message)s\n
+%(prog)s: warning: %(message)s\n
+%r is not callable
+'required' is an invalid argument for positionals
+.__call__() not defined
+ambiguous option: %(option)s could match %(matches)s
+argument "-" with mode %r
+argument %(argument_name)s: %(message)s
+argument '%(argument_name)s' is deprecated
+can't open '%(filename)s': %(error)s
+cannot have multiple subparser arguments
+cannot merge actions - two groups are named %r
+command '%(parser_name)s' is deprecated
+conflicting subparser alias: %s
+conflicting subparser: %s
+dest= is required for options like %r
+expected at least one argument
+expected at most one argument
+expected one argument
+ignored explicit argument %r
+invalid %(type)s value: %(value)r
+invalid choice: %(value)r (choose from %(choices)s)
+invalid conflict_resolution value: %r
+invalid option string %(option)r: must start with a character %(prefix_chars)r
+mutually exclusive arguments must be optional
+not allowed with argument %s
+one of the arguments %s is required
+option '%(option)s' is deprecated
+options
+positional arguments
+show program's version number and exit
+show this help message and exit
+subcommands
+the following arguments are required: %s
+unexpected option string: %s
+unknown parser %(parser_name)r (choices: %(choices)s)
+unrecognized arguments: %s
+usage: 
\ No newline at end of file
diff --git a/Lib/test/translationdata/getopt/msgids.txt b/Lib/test/translationdata/getopt/msgids.txt
new file mode 100644
index 00000000000000..1ffab1f31abad5
--- /dev/null
+++ b/Lib/test/translationdata/getopt/msgids.txt
@@ -0,0 +1,6 @@
+option -%s not recognized
+option -%s requires argument
+option --%s must not have an argument
+option --%s not a unique prefix
+option --%s not recognized
+option --%s requires argument
\ No newline at end of file
diff --git a/Lib/test/translationdata/optparse/msgids.txt b/Lib/test/translationdata/optparse/msgids.txt
new file mode 100644
index 00000000000000..ac5317c736af8c
--- /dev/null
+++ b/Lib/test/translationdata/optparse/msgids.txt
@@ -0,0 +1,14 @@
+%prog [options]
+%s option does not take a value
+Options
+Usage
+Usage: %s\n
+ambiguous option: %s (%s?)
+complex
+floating-point
+integer
+no such option: %s
+option %s: invalid %s value: %r
+option %s: invalid choice: %r (choose from %s)
+show program's version number and exit
+show this help message and exit
\ No newline at end of file
diff --git a/Lib/test/typinganndata/ann_module695.py b/Lib/test/typinganndata/ann_module695.py
index 2ede9fe382564f..b6f3b06bd5065f 100644
--- a/Lib/test/typinganndata/ann_module695.py
+++ b/Lib/test/typinganndata/ann_module695.py
@@ -17,6 +17,56 @@ class B[T, *Ts, **P]:
     z: P
 
 
+Eggs = int
+Spam = str
+
+
+class C[Eggs, **Spam]:
+    x: Eggs
+    y: Spam
+
+
 def generic_function[T, *Ts, **P](
     x: T, *y: *Ts, z: P.args, zz: P.kwargs
 ) -> None: ...
+
+
+def generic_function_2[Eggs, **Spam](x: Eggs, y: Spam): pass
+
+
+class D:
+    Foo = int
+    Bar = str
+
+    def generic_method[Foo, **Bar](
+        self, x: Foo, y: Bar
+    ) -> None: ...
+
+    def generic_method_2[Eggs, **Spam](self, x: Eggs, y: Spam): pass
+
+
+def nested():
+    from types import SimpleNamespace
+    from typing import get_type_hints
+
+    Eggs = bytes
+    Spam = memoryview
+
+
+    class E[Eggs, **Spam]:
+        x: Eggs
+        y: Spam
+
+        def generic_method[Eggs, **Spam](self, x: Eggs, y: Spam): pass
+
+
+    def generic_function[Eggs, **Spam](x: Eggs, y: Spam): pass
+
+
+    return SimpleNamespace(
+        E=E,
+        hints_for_E=get_type_hints(E),
+        hints_for_E_meth=get_type_hints(E.generic_method),
+        generic_func=generic_function,
+        hints_for_generic_func=get_type_hints(generic_function)
+    )
diff --git a/Lib/threading.py b/Lib/threading.py
index 31ab77c92b1c20..d6b0e2b4fbf161 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -336,7 +336,7 @@ def wait(self, timeout=None):
         awakened or timed out, it re-acquires the lock and returns.
 
         When the timeout argument is present and not None, it should be a
-        floating point number specifying a timeout for the operation in seconds
+        floating-point number specifying a timeout for the operation in seconds
         (or fractions thereof).
 
         When the underlying lock is an RLock, it is not released using its
@@ -646,7 +646,7 @@ def wait(self, timeout=None):
         the optional timeout occurs.
 
         When the timeout argument is present and not None, it should be a
-        floating point number specifying a timeout for the operation in seconds
+        floating-point number specifying a timeout for the operation in seconds
         (or fractions thereof).
 
         This method returns the internal flag on exit, so it will always return
@@ -689,6 +689,8 @@ def __init__(self, parties, action=None, timeout=None):
         default for all subsequent 'wait()' calls.
 
         """
+        if parties < 1:
+            raise ValueError("parties must be >= 1")
         self._cond = Condition(Lock())
         self._action = action
         self._timeout = timeout
@@ -1059,7 +1061,7 @@ def join(self, timeout=None):
         or until the optional timeout occurs.
 
         When the timeout argument is present and not None, it should be a
-        floating point number specifying a timeout for the operation in seconds
+        floating-point number specifying a timeout for the operation in seconds
         (or fractions thereof). As join() always returns None, you must call
         is_alive() after join() to decide whether a timeout happened -- if the
         thread is still alive, the join() call timed out.
diff --git a/Lib/tkinter/__init__.py b/Lib/tkinter/__init__.py
index daecf4eb2ea522..8b2502b4c0a165 100644
--- a/Lib/tkinter/__init__.py
+++ b/Lib/tkinter/__init__.py
@@ -40,7 +40,7 @@
 from tkinter.constants import *
 import re
 
-wantobjects = 2
+wantobjects = 1
 _debug = False  # set to True to print executed Tcl/Tk commands
 
 TkVersion = float(_tkinter.TK_VERSION)
@@ -1727,6 +1727,9 @@ def getint_event(s):
             except (ValueError, TclError):
                 return s
 
+        if any(isinstance(s, tuple) for s in args):
+            args = [s[0] if isinstance(s, tuple) and len(s) == 1 else s
+                    for s in args]
         nsign, b, f, h, k, s, t, w, x, y, A, E, K, N, W, T, X, Y, D = args
         # Missing: (a, c, d, m, o, v, B, R)
         e = Event()
@@ -2260,7 +2263,7 @@ def wm_iconbitmap(self, bitmap=None, default=None):
         explicitly.  DEFAULT can be the relative path to a .ico file
         (example: root.iconbitmap(default='myicon.ico') ).  See Tk
         documentation for more information."""
-        if default:
+        if default is not None:
             return self.tk.call('wm', 'iconbitmap', self._w, '-default', default)
         else:
             return self.tk.call('wm', 'iconbitmap', self._w, bitmap)
@@ -2736,6 +2739,8 @@ def _setup(self, master, cnf):
             del cnf['name']
         if not name:
             name = self.__class__.__name__.lower()
+            if name[-1].isdigit():
+                name += "!"  # Avoid duplication when calculating names below
             if master._last_child_ids is None:
                 master._last_child_ids = {}
             count = master._last_child_ids.get(name, 0) + 1
diff --git a/Lib/tkinter/simpledialog.py b/Lib/tkinter/simpledialog.py
index 0f0dc66460f798..6e5b025a9f9d7d 100644
--- a/Lib/tkinter/simpledialog.py
+++ b/Lib/tkinter/simpledialog.py
@@ -357,7 +357,7 @@ def askinteger(title, prompt, **kw):
 
 
 class _QueryFloat(_QueryDialog):
-    errormessage = "Not a floating point value."
+    errormessage = "Not a floating-point value."
 
     def getresult(self):
         return self.getdouble(self.entry.get())
diff --git a/Lib/tkinter/ttk.py b/Lib/tkinter/ttk.py
index 5ca938a670831a..073b3ae20797c3 100644
--- a/Lib/tkinter/ttk.py
+++ b/Lib/tkinter/ttk.py
@@ -690,7 +690,10 @@ def current(self, newindex=None):
         returns the index of the current value in the list of values
         or -1 if the current value does not appear in the list."""
         if newindex is None:
-            return self.tk.getint(self.tk.call(self._w, "current"))
+            res = self.tk.call(self._w, "current")
+            if res == '':
+                return -1
+            return self.tk.getint(res)
         return self.tk.call(self._w, "current", newindex)
 
 
@@ -1522,7 +1525,7 @@ def __init__(self, master=None, variable=None, from_=0, to=10, **kw):
         self.label.place(anchor='n' if label_side == 'top' else 's')
 
         # update the label as scale or variable changes
-        self.__tracecb = self._variable.trace_variable('w', self._adjust)
+        self.__tracecb = self._variable.trace_add('write', self._adjust)
         self.bind('<Configure>', self._adjust)
         self.bind('<Map>', self._adjust)
 
@@ -1530,7 +1533,7 @@ def __init__(self, master=None, variable=None, from_=0, to=10, **kw):
     def destroy(self):
         """Destroy this widget and possibly its associated variable."""
         try:
-            self._variable.trace_vdelete('w', self.__tracecb)
+            self._variable.trace_remove('write', self.__tracecb)
         except AttributeError:
             pass
         else:
diff --git a/Lib/token.py b/Lib/token.py
index b620317106e173..54d7cdccadc79a 100644
--- a/Lib/token.py
+++ b/Lib/token.py
@@ -1,7 +1,8 @@
 """Token constants."""
 # Auto-generated by Tools/build/generate_token.py
 
-__all__ = ['tok_name', 'ISTERMINAL', 'ISNONTERMINAL', 'ISEOF']
+__all__ = ['tok_name', 'ISTERMINAL', 'ISNONTERMINAL', 'ISEOF',
+           'EXACT_TOKEN_TYPES']
 
 ENDMARKER = 0
 NAME = 1
diff --git a/Lib/tokenize.py b/Lib/tokenize.py
index 7f418bb7a1b37f..7ca552c4fc590e 100644
--- a/Lib/tokenize.py
+++ b/Lib/tokenize.py
@@ -169,6 +169,7 @@ def __init__(self):
         self.prev_row = 1
         self.prev_col = 0
         self.prev_type = None
+        self.prev_line = ""
         self.encoding = None
 
     def add_whitespace(self, start):
@@ -176,14 +177,28 @@ def add_whitespace(self, start):
         if row < self.prev_row or row == self.prev_row and col < self.prev_col:
             raise ValueError("start ({},{}) precedes previous end ({},{})"
                              .format(row, col, self.prev_row, self.prev_col))
-        row_offset = row - self.prev_row
-        if row_offset:
-            self.tokens.append("\\\n" * row_offset)
-            self.prev_col = 0
+        self.add_backslash_continuation(start)
         col_offset = col - self.prev_col
         if col_offset:
             self.tokens.append(" " * col_offset)
 
+    def add_backslash_continuation(self, start):
+        """Add backslash continuation characters if the row has increased
+        without encountering a newline token.
+
+        This also inserts the correct amount of whitespace before the backslash.
+        """
+        row = start[0]
+        row_offset = row - self.prev_row
+        if row_offset == 0:
+            return
+
+        newline = '\r\n' if self.prev_line.endswith('\r\n') else '\n'
+        line = self.prev_line.rstrip('\\\r\n')
+        ws = ''.join(_itertools.takewhile(str.isspace, reversed(line)))
+        self.tokens.append(ws + f"\\{newline}" * row_offset)
+        self.prev_col = 0
+
     def escape_brackets(self, token):
         characters = []
         consume_until_next_bracket = False
@@ -200,7 +215,7 @@ def escape_brackets(self, token):
                         characters[-2::-1]
                     )
                 )
-                if n_backslashes % 2 == 0:
+                if n_backslashes % 2 == 0 or characters[-1] != "N":
                     characters.append(character)
                 else:
                     consume_until_next_bracket = True
@@ -243,8 +258,6 @@ def untokenize(self, iterable):
                     end_line, end_col = end
                     extra_chars = last_line.count("{{") + last_line.count("}}")
                     end = (end_line, end_col + extra_chars)
-            elif tok_type in (STRING, FSTRING_START) and self.prev_type in (STRING, FSTRING_END):
-                self.tokens.append(" ")
 
             self.add_whitespace(start)
             self.tokens.append(token)
@@ -253,6 +266,7 @@ def untokenize(self, iterable):
                 self.prev_row += 1
                 self.prev_col = 0
             self.prev_type = tok_type
+            self.prev_line = line
         return "".join(self.tokens)
 
     def compat(self, token, iterable):
@@ -318,16 +332,10 @@ def untokenize(iterable):
     with at least two elements, a token number and token value.  If
     only two tokens are passed, the resulting output is poor.
 
-    Round-trip invariant for full input:
-        Untokenized source will match input source exactly
-
-    Round-trip invariant for limited input:
-        # Output bytes will tokenize back to the input
-        t1 = [tok[:2] for tok in tokenize(f.readline)]
-        newcode = untokenize(t1)
-        readline = BytesIO(newcode).readline
-        t2 = [tok[:2] for tok in tokenize(readline)]
-        assert t1 == t2
+    The result is guaranteed to tokenize back to match the input so
+    that the conversion is lossless and round-trips are assured.
+    The guarantee applies only to the token type and token string as
+    the spacing between tokens (column positions) may change.
     """
     ut = Untokenizer()
     out = ut.untokenize(iterable)
diff --git a/Lib/trace.py b/Lib/trace.py
index 7886959fa64f68..64fc8037e355ee 100755
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -565,8 +565,12 @@ def localtrace_trace_and_count(self, frame, why, arg):
             if self.start_time:
                 print('%.2f' % (_time() - self.start_time), end=' ')
             bname = os.path.basename(filename)
-            print("%s(%d): %s" % (bname, lineno,
-                                  linecache.getline(filename, lineno)), end='')
+            line = linecache.getline(filename, lineno)
+            print("%s(%d)" % (bname, lineno), end='')
+            if line:
+                print(": ", line, end='')
+            else:
+                print()
         return self.localtrace
 
     def localtrace_trace(self, frame, why, arg):
@@ -578,8 +582,12 @@ def localtrace_trace(self, frame, why, arg):
             if self.start_time:
                 print('%.2f' % (_time() - self.start_time), end=' ')
             bname = os.path.basename(filename)
-            print("%s(%d): %s" % (bname, lineno,
-                                  linecache.getline(filename, lineno)), end='')
+            line = linecache.getline(filename, lineno)
+            print("%s(%d)" % (bname, lineno), end='')
+            if line:
+                print(": ", line, end='')
+            else:
+                print()
         return self.localtrace
 
     def localtrace_count(self, frame, why, arg):
diff --git a/Lib/traceback.py b/Lib/traceback.py
index 9401b461497cc1..f5e054190eaf1e 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -135,7 +135,7 @@ def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
 
 def _print_exception_bltin(exc, /):
     file = sys.stderr if sys.stderr is not None else sys.__stderr__
-    colorize = _colorize.can_colorize()
+    colorize = _colorize.can_colorize(file=file)
     return print_exception(exc, limit=BUILTIN_EXCEPTION_LIMIT, file=file, colorize=colorize)
 
 
@@ -155,7 +155,7 @@ def format_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, \
     return list(te.format(chain=chain, colorize=colorize))
 
 
-def format_exception_only(exc, /, value=_sentinel, *, show_group=False):
+def format_exception_only(exc, /, value=_sentinel, *, show_group=False, **kwargs):
     """Format the exception part of a traceback.
 
     The return value is a list of strings, each ending in a newline.
@@ -170,10 +170,11 @@ def format_exception_only(exc, /, value=_sentinel, *, show_group=False):
     :exc:`BaseExceptionGroup`, the nested exceptions are included as
     well, recursively, with indentation relative to their nesting depth.
     """
+    colorize = kwargs.get("colorize", False)
     if value is _sentinel:
         value = exc
     te = TracebackException(type(value), value, None, compact=True)
-    return list(te.format_exception_only(show_group=show_group))
+    return list(te.format_exception_only(show_group=show_group, colorize=colorize))
 
 
 # -- not official API but folk probably use these two functions.
@@ -579,7 +580,7 @@ def format_frame_summary(self, frame_summary, **kwargs):
                 show_carets = False
                 with suppress(Exception):
                     anchors = _extract_caret_anchors_from_line_segment(segment)
-                show_carets = self.should_show_carets(start_offset, end_offset, all_lines, anchors)
+                show_carets = self._should_show_carets(start_offset, end_offset, all_lines, anchors)
 
                 result = []
 
@@ -693,10 +694,12 @@ def output_line(lineno):
 
         return ''.join(row)
 
-    def should_show_carets(self, start_offset, end_offset, all_lines, anchors):
+    def _should_show_carets(self, start_offset, end_offset, all_lines, anchors):
         with suppress(SyntaxError, ImportError):
             import ast
             tree = ast.parse('\n'.join(all_lines))
+            if not tree.body:
+                return False
             statement = tree.body[0]
             value = None
             def _spawns_full_line(value):
@@ -1280,7 +1283,7 @@ def _format_syntax_error(self, stype, **kwargs):
             filename_suffix = ' ({})'.format(self.filename)
 
         text = self.text
-        if text is not None:
+        if isinstance(text, str):
             # text  = "   foo\n"
             # rtext = "   foo"
             # ltext =    "foo"
@@ -1289,13 +1292,24 @@ def _format_syntax_error(self, stype, **kwargs):
             spaces = len(rtext) - len(ltext)
             if self.offset is None:
                 yield '    {}\n'.format(ltext)
-            else:
+            elif isinstance(self.offset, int):
                 offset = self.offset
-                end_offset = self.end_offset if self.end_offset not in {None, 0} else offset
+                if self.lineno == self.end_lineno:
+                    end_offset = (
+                        self.end_offset
+                        if (
+                            isinstance(self.end_offset, int)
+                            and self.end_offset != 0
+                        )
+                        else offset
+                    )
+                else:
+                    end_offset = len(rtext) + 1
+
                 if self.text and offset > len(self.text):
-                    offset = len(self.text) + 1
+                    offset = len(rtext) + 1
                 if self.text and end_offset > len(self.text):
-                    end_offset = len(self.text) + 1
+                    end_offset = len(rtext) + 1
                 if offset >= end_offset or end_offset < 0:
                     end_offset = offset + 1
 
@@ -1421,7 +1435,7 @@ def format(self, *, chain=True, _ctx=None, **kwargs):
                            f'+---------------- {title} ----------------\n')
                     _ctx.exception_group_depth += 1
                     if not truncated:
-                        yield from exc.exceptions[i].format(chain=chain, _ctx=_ctx)
+                        yield from exc.exceptions[i].format(chain=chain, _ctx=_ctx, colorize=colorize)
                     else:
                         remaining = num_excs - self.max_group_width
                         plural = 's' if remaining > 1 else ''
diff --git a/Lib/turtle.py b/Lib/turtle.py
index 7bfe81351b0b34..99850ae5efe348 100644
--- a/Lib/turtle.py
+++ b/Lib/turtle.py
@@ -1718,7 +1718,7 @@ def xcor(self):
         >>> reset()
         >>> turtle.left(60)
         >>> turtle.forward(100)
-        >>> print turtle.xcor()
+        >>> print(turtle.xcor())
         50.0
         """
         return self._position[0]
@@ -1732,7 +1732,7 @@ def ycor(self):
         >>> reset()
         >>> turtle.left(60)
         >>> turtle.forward(100)
-        >>> print turtle.ycor()
+        >>> print(turtle.ycor())
         86.6025403784
         """
         return self._position[1]
@@ -2335,7 +2335,7 @@ def isvisible(self):
 
         Example (for a Turtle instance named turtle):
         >>> turtle.hideturtle()
-        >>> print turtle.isvisible():
+        >>> print(turtle.isvisible())
         False
         """
         return self._shown
diff --git a/Lib/turtledemo/__main__.py b/Lib/turtledemo/__main__.py
index 2ab6c15e2c079e..8dbda474bb3efd 100755
--- a/Lib/turtledemo/__main__.py
+++ b/Lib/turtledemo/__main__.py
@@ -92,20 +92,21 @@
 from idlelib.colorizer import ColorDelegator, color_config
 from idlelib.percolator import Percolator
 from idlelib.textview import view_text
+import turtle
 from turtledemo import __doc__ as about_turtledemo
 
-import turtle
+if sys.platform == 'win32':
+    from idlelib.util import fix_win_hidpi
+    fix_win_hidpi()
 
 demo_dir = os.path.dirname(os.path.abspath(__file__))
 darwin = sys.platform == 'darwin'
-
 STARTUP = 1
 READY = 2
 RUNNING = 3
 DONE = 4
 EVENTDRIVEN = 5
 
-menufont = ("Arial", 12, NORMAL)
 btnfont = ("Arial", 12, 'bold')
 txtfont = ['Lucida Console', 10, 'normal']
 
@@ -216,7 +217,7 @@ def makeTextFrame(self, root):
 
         self.vbar = vbar = Scrollbar(text_frame, name='vbar')
         vbar['command'] = text.yview
-        vbar.pack(side=LEFT, fill=Y)
+        vbar.pack(side=RIGHT, fill=Y)
         self.hbar = hbar = Scrollbar(text_frame, name='hbar', orient=HORIZONTAL)
         hbar['command'] = text.xview
         hbar.pack(side=BOTTOM, fill=X)
@@ -292,37 +293,35 @@ def configGUI(self, start, stop, clear, txt="", color="blue"):
         self.output_lbl.config(text=txt, fg=color)
 
     def makeLoadDemoMenu(self, master):
-        menu = Menu(master)
+        menu = Menu(master, tearoff=1)  # TJR: leave this one.
 
         for entry in getExampleEntries():
             def load(entry=entry):
                 self.loadfile(entry)
-            menu.add_command(label=entry, underline=0,
-                             font=menufont, command=load)
+            menu.add_command(label=entry, underline=0, command=load)
         return menu
 
     def makeFontMenu(self, master):
-        menu = Menu(master)
-        menu.add_command(label="Decrease (C-'-')", command=self.decrease_size,
-                         font=menufont)
-        menu.add_command(label="Increase (C-'+')", command=self.increase_size,
-                         font=menufont)
+        menu = Menu(master, tearoff=0)
+        menu.add_command(label="Decrease", command=self.decrease_size,
+                         accelerator=f"{'Command' if darwin else 'Ctrl'}+-")
+        menu.add_command(label="Increase", command=self.increase_size,
+                         accelerator=f"{'Command' if darwin else 'Ctrl'}+=")
         menu.add_separator()
 
         for size in font_sizes:
             def resize(size=size):
                 self.set_txtsize(size)
-            menu.add_command(label=str(size), underline=0,
-                             font=menufont, command=resize)
+            menu.add_command(label=str(size), underline=0, command=resize)
         return menu
 
     def makeHelpMenu(self, master):
-        menu = Menu(master)
+        menu = Menu(master, tearoff=0)
 
         for help_label, help_file in help_entries:
             def show(help_label=help_label, help_file=help_file):
                 view_text(self.root, help_label, help_file)
-            menu.add_command(label=help_label, font=menufont, command=show)
+            menu.add_command(label=help_label, command=show)
         return menu
 
     def refreshCanvas(self):
diff --git a/Lib/turtledemo/clock.py b/Lib/turtledemo/clock.py
index 9f8585bd11e053..318f126006333f 100755
--- a/Lib/turtledemo/clock.py
+++ b/Lib/turtledemo/clock.py
@@ -1,8 +1,7 @@
 #!/usr/bin/env python3
-# -*- coding: cp1252 -*-
 """       turtle-example-suite:
 
-             tdemo_clock.py
+           turtledemo/clock.py
 
 Enhanced clock-program, showing date
 and time
@@ -13,6 +12,9 @@
 from turtle import *
 from datetime import datetime
 
+dtfont = "TkFixedFont", 14, "bold"
+current_day = None
+
 def jump(distanz, winkel=0):
     penup()
     right(winkel)
@@ -53,11 +55,23 @@ def clockface(radius):
             jump(-radius)
         rt(6)
 
+def display_date_time():
+    global current_day
+    writer.clear()
+    now = datetime.now()
+    current_day = now.day
+    writer.home()
+    writer.forward(distance=65)
+    writer.write(wochentag(now), align="center", font=dtfont)
+    writer.back(distance=150)
+    writer.write(datum(now), align="center", font=dtfont)
+    writer.forward(distance=85)
+
 def setup():
     global second_hand, minute_hand, hour_hand, writer
     mode("logo")
     make_hand_shape("second_hand", 125, 25)
-    make_hand_shape("minute_hand",  130, 25)
+    make_hand_shape("minute_hand",  115, 25)
     make_hand_shape("hour_hand", 90, 25)
     clockface(160)
     second_hand = Turtle()
@@ -75,10 +89,10 @@ def setup():
         hand.speed(0)
     ht()
     writer = Turtle()
-    #writer.mode("logo")
     writer.ht()
     writer.pu()
     writer.bk(85)
+    display_date_time()
 
 def wochentag(t):
     wochentag = ["Monday", "Tuesday", "Wednesday",
@@ -100,18 +114,11 @@ def tick():
     stunde = t.hour + minute/60.0
     try:
         tracer(False)  # Terminator can occur here
-        writer.clear()
-        writer.home()
-        writer.forward(65)
-        writer.write(wochentag(t),
-                     align="center", font=("Courier", 14, "bold"))
-        writer.back(150)
-        writer.write(datum(t),
-                     align="center", font=("Courier", 14, "bold"))
-        writer.forward(85)
         second_hand.setheading(6*sekunde)  # or here
         minute_hand.setheading(6*minute)
         hour_hand.setheading(30*stunde)
+        if t.day != current_day:
+            display_date_time()
         tracer(True)
         ontimer(tick, 100)
     except Terminator:
diff --git a/Lib/turtledemo/sorting_animate.py b/Lib/turtledemo/sorting_animate.py
index d25a0ab6cebdc0..1c6aae80b84588 100755
--- a/Lib/turtledemo/sorting_animate.py
+++ b/Lib/turtledemo/sorting_animate.py
@@ -7,7 +7,7 @@
 Sorts a shelf of 10 blocks using insertion
 sort, selection sort and quicksort.
 
-Shelfs are implemented using builtin lists.
+Shelves are implemented using builtin lists.
 
 Blocks are turtles with shape "square", but
 stretched to rectangles by shapesize()
diff --git a/Lib/typing.py b/Lib/typing.py
index 8e61f50477bcc2..fe939a2e68b9bd 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -257,15 +257,15 @@ def _type_repr(obj):
     return repr(obj)
 
 
-def _collect_parameters(args):
-    """Collect all type variables and parameter specifications in args
+def _collect_type_parameters(args, *, enforce_default_ordering: bool = True):
+    """Collect all type parameters in args
     in order of first appearance (lexicographic order).
 
     For example::
 
         >>> P = ParamSpec('P')
         >>> T = TypeVar('T')
-        >>> _collect_parameters((T, Callable[P, T]))
+        >>> _collect_type_parameters((T, Callable[P, T]))
         (~T, ~P)
     """
     # required type parameter cannot appear after parameter with default
@@ -281,20 +281,21 @@ def _collect_parameters(args):
             # `t` might be a tuple, when `ParamSpec` is substituted with
             # `[T, int]`, or `[int, *Ts]`, etc.
             for x in t:
-                for collected in _collect_parameters([x]):
+                for collected in _collect_type_parameters([x]):
                     if collected not in parameters:
                         parameters.append(collected)
         elif hasattr(t, '__typing_subst__'):
             if t not in parameters:
-                if type_var_tuple_encountered and t.has_default():
-                    raise TypeError('Type parameter with a default'
-                                    ' follows TypeVarTuple')
+                if enforce_default_ordering:
+                    if type_var_tuple_encountered and t.has_default():
+                        raise TypeError('Type parameter with a default'
+                                        ' follows TypeVarTuple')
 
-                if t.has_default():
-                    default_encountered = True
-                elif default_encountered:
-                    raise TypeError(f'Type parameter {t!r} without a default'
-                                    ' follows type parameter with a default')
+                    if t.has_default():
+                        default_encountered = True
+                    elif default_encountered:
+                        raise TypeError(f'Type parameter {t!r} without a default'
+                                        ' follows type parameter with a default')
 
                 parameters.append(t)
         else:
@@ -320,7 +321,7 @@ def _check_generic_specialization(cls, arguments):
         if actual_len < expected_len:
             # If the parameter at index `actual_len` in the parameters list
             # has a default, then all parameters after it must also have
-            # one, because we validated as much in _collect_parameters().
+            # one, because we validated as much in _collect_type_parameters().
             # That means that no error needs to be raised here, despite
             # the number of arguments being passed not matching the number
             # of parameters: all parameters that aren't explicitly
@@ -1060,15 +1061,24 @@ def _evaluate(self, globalns, localns, type_params=_sentinel, *, recursive_guard
                 globalns = getattr(
                     sys.modules.get(self.__forward_module__, None), '__dict__', globalns
                 )
+
+            # type parameters require some special handling,
+            # as they exist in their own scope
+            # but `eval()` does not have a dedicated parameter for that scope.
+            # For classes, names in type parameter scopes should override
+            # names in the global scope (which here are called `localns`!),
+            # but should in turn be overridden by names in the class scope
+            # (which here are called `globalns`!)
             if type_params:
-                # "Inject" type parameters into the local namespace
-                # (unless they are shadowed by assignments *in* the local namespace),
-                # as a way of emulating annotation scopes when calling `eval()`
-                locals_to_pass = {param.__name__: param for param in type_params} | localns
-            else:
-                locals_to_pass = localns
+                globalns, localns = dict(globalns), dict(localns)
+                for param in type_params:
+                    param_name = param.__name__
+                    if not self.__forward_is_class__ or param_name not in globalns:
+                        globalns[param_name] = param
+                        localns.pop(param_name, None)
+
             type_ = _type_check(
-                eval(self.__forward_code__, globalns, locals_to_pass),
+                eval(self.__forward_code__, globalns, localns),
                 "Forward references must evaluate to types.",
                 is_argument=self.__forward_is_argument__,
                 allow_special_forms=self.__forward_is_class__,
@@ -1255,7 +1265,7 @@ def _generic_init_subclass(cls, *args, **kwargs):
     if error:
         raise TypeError("Cannot inherit from plain Generic")
     if '__orig_bases__' in cls.__dict__:
-        tvars = _collect_parameters(cls.__orig_bases__)
+        tvars = _collect_type_parameters(cls.__orig_bases__)
         # Look for Generic[T1, ..., Tn].
         # If found, tvars must be a subset of it.
         # If not found, tvars is it.
@@ -1416,7 +1426,11 @@ def __init__(self, origin, args, *, inst=True, name=None):
             args = (args,)
         self.__args__ = tuple(... if a is _TypingEllipsis else
                               a for a in args)
-        self.__parameters__ = _collect_parameters(args)
+        enforce_default_ordering = origin in (Generic, Protocol)
+        self.__parameters__ = _collect_type_parameters(
+            args,
+            enforce_default_ordering=enforce_default_ordering,
+        )
         if not name:
             self.__module__ = origin.__module__
 
@@ -1769,12 +1783,16 @@ def __repr__(self):
         return super().__repr__()
 
     def __instancecheck__(self, obj):
-        return self.__subclasscheck__(type(obj))
+        for arg in self.__args__:
+            if isinstance(obj, arg):
+                return True
+        return False
 
     def __subclasscheck__(self, cls):
         for arg in self.__args__:
             if issubclass(cls, arg):
                 return True
+        return False
 
     def __reduce__(self):
         func, (origin, args) = super().__reduce__()
@@ -1975,7 +1993,8 @@ def _allow_reckless_class_checks(depth=2):
 _PROTO_ALLOWLIST = {
     'collections.abc': [
         'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable',
-        'Hashable', 'Sized', 'Container', 'Collection', 'Reversible', 'Buffer',
+        'AsyncIterator', 'Hashable', 'Sized', 'Container', 'Collection',
+        'Reversible', 'Buffer',
     ],
     'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'],
 }
@@ -3784,6 +3803,16 @@ def __getattr__(attr):
     elif attr in {"ContextManager", "AsyncContextManager"}:
         import contextlib
         obj = _alias(getattr(contextlib, f"Abstract{attr}"), 2, name=attr, defaults=(bool | None,))
+    elif attr == "_collect_parameters":
+        import warnings
+
+        depr_message = (
+            "The private _collect_parameters function is deprecated and will be"
+            " removed in a future version of Python. Any use of private functions"
+            " is discouraged and may break in the future."
+        )
+        warnings.warn(depr_message, category=DeprecationWarning, stacklevel=2)
+        obj = _collect_type_parameters
     else:
         raise AttributeError(f"module {__name__!r} has no attribute {attr!r}")
     globals()[attr] = obj
diff --git a/Lib/unittest/async_case.py b/Lib/unittest/async_case.py
index 63ff6a5d1f8b61..e761ba7e53c5eb 100644
--- a/Lib/unittest/async_case.py
+++ b/Lib/unittest/async_case.py
@@ -5,6 +5,7 @@
 
 from .case import TestCase
 
+__unittest = True
 
 class IsolatedAsyncioTestCase(TestCase):
     # Names intentionally have a long prefix
diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index a2634b6164062a..495a666eddb7d0 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -628,7 +628,7 @@ def __set_side_effect(self, value):
     side_effect = property(__get_side_effect, __set_side_effect)
 
 
-    def reset_mock(self,  visited=None,*, return_value=False, side_effect=False):
+    def reset_mock(self, visited=None, *, return_value=False, side_effect=False):
         "Restore the mock object to its initial state."
         if visited is None:
             visited = []
@@ -830,6 +830,9 @@ def __setattr__(self, name, value):
             mock_name = f'{self._extract_mock_name()}.{name}'
             raise AttributeError(f'Cannot set {mock_name}')
 
+        if isinstance(value, PropertyMock):
+            self.__dict__[name] = value
+            return
         return object.__setattr__(self, name, value)
 
 
@@ -1354,6 +1357,7 @@ def __init__(
         self.autospec = autospec
         self.kwargs = kwargs
         self.additional_patchers = []
+        self.is_started = False
 
 
     def copy(self):
@@ -1466,6 +1470,9 @@ def get_original(self):
 
     def __enter__(self):
         """Perform the patch."""
+        if self.is_started:
+            raise RuntimeError("Patch is already started")
+
         new, spec, spec_set = self.new, self.spec, self.spec_set
         autospec, kwargs = self.autospec, self.kwargs
         new_callable = self.new_callable
@@ -1508,13 +1515,12 @@ def __enter__(self):
                 if isinstance(original, type):
                     # If we're patching out a class and there is a spec
                     inherit = True
-            if spec is None and _is_async_obj(original):
-                Klass = AsyncMock
-            else:
-                Klass = MagicMock
-            _kwargs = {}
+
+            # Determine the Klass to use
             if new_callable is not None:
                 Klass = new_callable
+            elif spec is None and _is_async_obj(original):
+                Klass = AsyncMock
             elif spec is not None or spec_set is not None:
                 this_spec = spec
                 if spec_set is not None:
@@ -1527,7 +1533,12 @@ def __enter__(self):
                     Klass = AsyncMock
                 elif not_callable:
                     Klass = NonCallableMagicMock
+                else:
+                    Klass = MagicMock
+            else:
+                Klass = MagicMock
 
+            _kwargs = {}
             if spec is not None:
                 _kwargs['spec'] = spec
             if spec_set is not None:
@@ -1593,6 +1604,7 @@ def __enter__(self):
         self.temp_original = original
         self.is_local = local
         self._exit_stack = contextlib.ExitStack()
+        self.is_started = True
         try:
             setattr(self.target, self.attribute, new_attr)
             if self.attribute_name is not None:
@@ -1612,6 +1624,9 @@ def __enter__(self):
 
     def __exit__(self, *exc_info):
         """Undo the patch."""
+        if not self.is_started:
+            return
+
         if self.is_local and self.temp_original is not DEFAULT:
             setattr(self.target, self.attribute, self.temp_original)
         else:
@@ -1628,6 +1643,7 @@ def __exit__(self, *exc_info):
         del self.target
         exit_stack = self._exit_stack
         del self._exit_stack
+        self.is_started = False
         return exit_stack.__exit__(*exc_info)
 
 
@@ -2212,6 +2228,17 @@ def mock_add_spec(self, spec, spec_set=False):
         self._mock_add_spec(spec, spec_set)
         self._mock_set_magics()
 
+    def reset_mock(self, /, *args, return_value=False, **kwargs):
+        if (
+            return_value
+            and self._mock_name
+            and _is_magic(self._mock_name)
+        ):
+            # Don't reset return values for magic methods,
+            # otherwise `m.__str__` will start
+            # to return `MagicMock` instances, instead of `str` instances.
+            return_value = False
+        super().reset_mock(*args, return_value=return_value, **kwargs)
 
 
 class MagicProxy(Base):
@@ -2748,6 +2775,12 @@ def create_autospec(spec, spec_set=False, instance=False, _parent=None,
     if not unsafe:
         _check_spec_arg_typos(kwargs)
 
+    _name = kwargs.pop('name', _name)
+    _new_name = _name
+    if _parent is None:
+        # for a top level object no _new_name should be set
+        _new_name = ''
+
     _kwargs.update(kwargs)
 
     Klass = MagicMock
@@ -2765,13 +2798,6 @@ def create_autospec(spec, spec_set=False, instance=False, _parent=None,
     elif is_type and instance and not _instance_callable(spec):
         Klass = NonCallableMagicMock
 
-    _name = _kwargs.pop('name', _name)
-
-    _new_name = _name
-    if _parent is None:
-        # for a top level object no _new_name should be set
-        _new_name = ''
-
     mock = Klass(parent=_parent, _new_parent=_parent, _new_name=_new_name,
                  name=_name, **_kwargs)
 
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index fc9e7c99f283be..24815952037fef 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -525,9 +525,13 @@ def urlunsplit(components):
     empty query; the RFC states that these are equivalent)."""
     scheme, netloc, url, query, fragment, _coerce_result = (
                                           _coerce_args(*components))
-    if netloc or (scheme and scheme in uses_netloc and url[:2] != '//'):
+    if netloc:
         if url and url[:1] != '/': url = '/' + url
-        url = '//' + (netloc or '') + url
+        url = '//' + netloc + url
+    elif url[:2] == '//':
+        url = '//' + url
+    elif scheme and scheme in uses_netloc and (not url or url[:1] == '/'):
+        url = '//' + url
     if scheme:
         url = scheme + ':' + url
     if query:
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index ac6719ce854182..a2504a2b9c783c 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -878,9 +878,9 @@ def find_user_password(self, realm, authuri):
 
 class HTTPPasswordMgrWithPriorAuth(HTTPPasswordMgrWithDefaultRealm):
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self):
         self.authenticated = {}
-        super().__init__(*args, **kwargs)
+        super().__init__()
 
     def add_password(self, realm, uri, user, passwd, is_authenticated=False):
         self.update_authenticated(uri, is_authenticated)
@@ -1656,12 +1656,27 @@ def data_open(self, req):
     def url2pathname(pathname):
         """OS-specific conversion from a relative URL of the 'file' scheme
         to a file system path; not recommended for general use."""
-        return unquote(pathname)
+        if pathname[:3] == '///':
+            # URL has an empty authority section, so the path begins on the
+            # third character.
+            pathname = pathname[2:]
+        elif pathname[:12] == '//localhost/':
+            # Skip past 'localhost' authority.
+            pathname = pathname[11:]
+        encoding = sys.getfilesystemencoding()
+        errors = sys.getfilesystemencodeerrors()
+        return unquote(pathname, encoding=encoding, errors=errors)
 
     def pathname2url(pathname):
         """OS-specific conversion from a file system path to a relative URL
         of the 'file' scheme; not recommended for general use."""
-        return quote(pathname)
+        if pathname[:2] == '//':
+            # Add explicitly empty authority to avoid interpreting the path
+            # as authority.
+            pathname = '//' + pathname
+        encoding = sys.getfilesystemencoding()
+        errors = sys.getfilesystemencodeerrors()
+        return quote(pathname, encoding=encoding, errors=errors)
 
 
 ftpcache = {}
diff --git a/Lib/urllib/robotparser.py b/Lib/urllib/robotparser.py
index c58565e3945146..409f2b2e48de6e 100644
--- a/Lib/urllib/robotparser.py
+++ b/Lib/urllib/robotparser.py
@@ -11,6 +11,7 @@
 """
 
 import collections
+import urllib.error
 import urllib.parse
 import urllib.request
 
@@ -65,6 +66,7 @@ def read(self):
                 self.disallow_all = True
             elif err.code >= 400 and err.code < 500:
                 self.allow_all = True
+            err.close()
         else:
             raw = f.read()
             self.parse(raw.decode("utf-8").splitlines())
diff --git a/Lib/venv/__init__.py b/Lib/venv/__init__.py
index fa69d5846f2fa7..f7a6d2614018c5 100644
--- a/Lib/venv/__init__.py
+++ b/Lib/venv/__init__.py
@@ -11,6 +11,7 @@
 import sys
 import sysconfig
 import types
+import shlex
 
 
 CORE_VENV_DEPS = ('pip',)
@@ -393,7 +394,7 @@ def setup_python(self, context):
                         os.symlink(src, dest)
                         to_unlink.append(dest)
                     except OSError:
-                        logger.warning('Unable to symlink %r to %r', src, dst)
+                        logger.warning('Unable to symlink %r to %r', src, dest)
                         do_copies = True
                         for f in to_unlink:
                             try:
@@ -481,11 +482,41 @@ def replace_variables(self, text, context):
         :param context: The information for the environment creation request
                         being processed.
         """
-        text = text.replace('__VENV_DIR__', context.env_dir)
-        text = text.replace('__VENV_NAME__', context.env_name)
-        text = text.replace('__VENV_PROMPT__', context.prompt)
-        text = text.replace('__VENV_BIN_NAME__', context.bin_name)
-        text = text.replace('__VENV_PYTHON__', context.env_exe)
+        replacements = {
+            '__VENV_DIR__': context.env_dir,
+            '__VENV_NAME__': context.env_name,
+            '__VENV_PROMPT__': context.prompt,
+            '__VENV_BIN_NAME__': context.bin_name,
+            '__VENV_PYTHON__': context.env_exe,
+        }
+
+        def quote_ps1(s):
+            """
+            This should satisfy PowerShell quoting rules [1], unless the quoted
+            string is passed directly to Windows native commands [2].
+            [1]: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules
+            [2]: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_parsing#passing-arguments-that-contain-quote-characters
+            """
+            s = s.replace("'", "''")
+            return f"'{s}'"
+
+        def quote_bat(s):
+            return s
+
+        # gh-124651: need to quote the template strings properly
+        quote = shlex.quote
+        script_path = context.script_path
+        if script_path.endswith('.ps1'):
+            quote = quote_ps1
+        elif script_path.endswith('.bat'):
+            quote = quote_bat
+        else:
+            # fallbacks to POSIX shell compliant quote
+            quote = shlex.quote
+
+        replacements = {key: quote(s) for key, s in replacements.items()}
+        for key, quoted in replacements.items():
+            text = text.replace(key, quoted)
         return text
 
     def install_scripts(self, context, path):
@@ -535,6 +566,7 @@ def skip_file(f):
                 with open(srcfile, 'rb') as f:
                     data = f.read()
                 try:
+                    context.script_path = srcfile
                     new_data = (
                         self.replace_variables(data.decode('utf-8'), context)
                             .encode('utf-8')
diff --git a/Lib/venv/scripts/common/activate b/Lib/venv/scripts/common/activate
index cbd4873f012246..70673a265d41f8 100644
--- a/Lib/venv/scripts/common/activate
+++ b/Lib/venv/scripts/common/activate
@@ -14,8 +14,9 @@ deactivate () {
         unset _OLD_VIRTUAL_PYTHONHOME
     fi
 
-    # Call hash to forget past commands. Without forgetting
-    # past commands the $PATH changes we made may not be respected
+    # Call hash to forget past locations. Without forgetting
+    # past locations the $PATH changes we made may not be respected.
+    # See "man bash" for more details. hash is usually a builtin of your shell
     hash -r 2> /dev/null
 
     if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
@@ -37,23 +38,23 @@ deactivate nondestructive
 
 # on Windows, a path can contain colons and backslashes and has to be converted:
 case "$(uname)" in
-    CYGWIN*|MSYS*)
-        # transform D:\path\to\venv to /d/path/to/venv on MSYS
+    CYGWIN*|MSYS*|MINGW*)
+        # transform D:\path\to\venv to /d/path/to/venv on MSYS and MINGW
         # and to /cygdrive/d/path/to/venv on Cygwin
-        VIRTUAL_ENV=$(cygpath "__VENV_DIR__")
+        VIRTUAL_ENV=$(cygpath __VENV_DIR__)
         export VIRTUAL_ENV
         ;;
     *)
         # use the path as-is
-        export VIRTUAL_ENV="__VENV_DIR__"
+        export VIRTUAL_ENV=__VENV_DIR__
         ;;
 esac
 
 _OLD_VIRTUAL_PATH="$PATH"
-PATH="$VIRTUAL_ENV/__VENV_BIN_NAME__:$PATH"
+PATH="$VIRTUAL_ENV/"__VENV_BIN_NAME__":$PATH"
 export PATH
 
-VIRTUAL_ENV_PROMPT="__VENV_PROMPT__"
+VIRTUAL_ENV_PROMPT=__VENV_PROMPT__
 export VIRTUAL_ENV_PROMPT
 
 # unset PYTHONHOME if set
@@ -66,7 +67,7 @@ fi
 
 if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
     _OLD_VIRTUAL_PS1="${PS1:-}"
-    PS1="(__VENV_PROMPT__) ${PS1:-}"
+    PS1="("__VENV_PROMPT__") ${PS1:-}"
     export PS1
 fi
 
diff --git a/Lib/venv/scripts/common/activate.fish b/Lib/venv/scripts/common/activate.fish
index 25c42756789bbc..284a7469c99b57 100644
--- a/Lib/venv/scripts/common/activate.fish
+++ b/Lib/venv/scripts/common/activate.fish
@@ -33,11 +33,11 @@ end
 # Unset irrelevant variables.
 deactivate nondestructive
 
-set -gx VIRTUAL_ENV "__VENV_DIR__"
+set -gx VIRTUAL_ENV __VENV_DIR__
 
 set -gx _OLD_VIRTUAL_PATH $PATH
-set -gx PATH "$VIRTUAL_ENV/__VENV_BIN_NAME__" $PATH
-set -gx VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
+set -gx PATH "$VIRTUAL_ENV/"__VENV_BIN_NAME__ $PATH
+set -gx VIRTUAL_ENV_PROMPT __VENV_PROMPT__
 
 # Unset PYTHONHOME if set.
 if set -q PYTHONHOME
@@ -57,7 +57,7 @@ if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
         set -l old_status $status
 
         # Output the venv prompt; color taken from the blue of the Python logo.
-        printf "%s(%s)%s " (set_color 4B8BBE) "__VENV_PROMPT__" (set_color normal)
+        printf "%s(%s)%s " (set_color 4B8BBE) __VENV_PROMPT__ (set_color normal)
 
         # Restore the return status of the previous command.
         echo "exit $old_status" | .
diff --git a/Lib/venv/scripts/nt/activate.bat b/Lib/venv/scripts/nt/activate.bat
index dd5ea8eb67b90a..35533e4b551155 100644
--- a/Lib/venv/scripts/nt/activate.bat
+++ b/Lib/venv/scripts/nt/activate.bat
@@ -8,7 +8,7 @@ if defined _OLD_CODEPAGE (
     "%SystemRoot%\System32\chcp.com" 65001 > nul
 )
 
-set VIRTUAL_ENV=__VENV_DIR__
+set "VIRTUAL_ENV=__VENV_DIR__"
 
 if not defined PROMPT set PROMPT=$P$G
 
@@ -24,8 +24,8 @@ set PYTHONHOME=
 if defined _OLD_VIRTUAL_PATH set PATH=%_OLD_VIRTUAL_PATH%
 if not defined _OLD_VIRTUAL_PATH set _OLD_VIRTUAL_PATH=%PATH%
 
-set PATH=%VIRTUAL_ENV%\__VENV_BIN_NAME__;%PATH%
-set VIRTUAL_ENV_PROMPT=__VENV_PROMPT__
+set "PATH=%VIRTUAL_ENV%\__VENV_BIN_NAME__;%PATH%"
+set "VIRTUAL_ENV_PROMPT=__VENV_PROMPT__"
 
 :END
 if defined _OLD_CODEPAGE (
diff --git a/Lib/venv/scripts/posix/activate.csh b/Lib/venv/scripts/posix/activate.csh
index c707f1988b0acc..2a3fa835476ab9 100644
--- a/Lib/venv/scripts/posix/activate.csh
+++ b/Lib/venv/scripts/posix/activate.csh
@@ -9,17 +9,17 @@ alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PA
 # Unset irrelevant variables.
 deactivate nondestructive
 
-setenv VIRTUAL_ENV "__VENV_DIR__"
+setenv VIRTUAL_ENV __VENV_DIR__
 
 set _OLD_VIRTUAL_PATH="$PATH"
-setenv PATH "$VIRTUAL_ENV/__VENV_BIN_NAME__:$PATH"
-setenv VIRTUAL_ENV_PROMPT "__VENV_PROMPT__"
+setenv PATH "$VIRTUAL_ENV/"__VENV_BIN_NAME__":$PATH"
+setenv VIRTUAL_ENV_PROMPT __VENV_PROMPT__
 
 
 set _OLD_VIRTUAL_PROMPT="$prompt"
 
 if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
-    set prompt = "(__VENV_PROMPT__) $prompt"
+    set prompt = "("__VENV_PROMPT__") $prompt:q"
 endif
 
 alias pydoc python -m pydoc
diff --git a/Lib/warnings.py b/Lib/warnings.py
index 20a39d54bf7e6a..430e4748b973da 100644
--- a/Lib/warnings.py
+++ b/Lib/warnings.py
@@ -629,12 +629,16 @@ def __init_subclass__(*args, **kwargs):
             return arg
         elif callable(arg):
             import functools
+            import inspect
 
             @functools.wraps(arg)
             def wrapper(*args, **kwargs):
                 warn(msg, category=category, stacklevel=stacklevel + 1)
                 return arg(*args, **kwargs)
 
+            if inspect.iscoroutinefunction(arg):
+                wrapper = inspect.markcoroutinefunction(wrapper)
+
             arg.__deprecated__ = wrapper.__deprecated__ = msg
             return wrapper
         else:
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index b7fbc41853ea65..2f9555ad60dde4 100755
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -32,7 +32,7 @@ def register(name, klass, instance=None, *, preferred=False):
         # Preferred browsers go to the front of the list.
         # Need to match to the default browser returned by xdg-settings, which
         # may be of the form e.g. "firefox.desktop".
-        if preferred or (_os_preferred_browser and name in _os_preferred_browser):
+        if preferred or (_os_preferred_browser and f'{name}.desktop' == _os_preferred_browser):
             _tryorder.insert(0, name)
         else:
             _tryorder.append(name)
@@ -81,6 +81,9 @@ def open(url, new=0, autoraise=True):
     - 1: a new browser window.
     - 2: a new browser page ("tab").
     If possible, autoraise raises the window (the default) or not.
+
+    If opening the browser succeeds, return True.
+    If there is a problem, return False.
     """
     if _tryorder is None:
         with _lock:
diff --git a/Lib/xml/dom/xmlbuilder.py b/Lib/xml/dom/xmlbuilder.py
index 8a200263497b89..a8852625a2f9a2 100644
--- a/Lib/xml/dom/xmlbuilder.py
+++ b/Lib/xml/dom/xmlbuilder.py
@@ -189,7 +189,7 @@ def parse(self, input):
         options.filter = self.filter
         options.errorHandler = self.errorHandler
         fp = input.byteStream
-        if fp is None and options.systemId:
+        if fp is None and input.systemId:
             import urllib.request
             fp = urllib.request.urlopen(input.systemId)
         return self._parse_bytestream(fp, options)
@@ -247,10 +247,12 @@ def _create_opener(self):
 
     def _guess_media_encoding(self, source):
         info = source.byteStream.info()
-        if "Content-Type" in info:
-            for param in info.getplist():
-                if param.startswith("charset="):
-                    return param.split("=", 1)[1].lower()
+        # import email.message
+        # assert isinstance(info, email.message.Message)
+        charset = info.get_param('charset')
+        if charset is not None:
+            return charset.lower()
+        return None
 
 
 class DOMInputSource(object):
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
index 9e15d34d22aa6c..ce67d7d7d54748 100644
--- a/Lib/xml/etree/ElementTree.py
+++ b/Lib/xml/etree/ElementTree.py
@@ -201,7 +201,7 @@ def __len__(self):
 
     def __bool__(self):
         warnings.warn(
-            "Testing an element's truth value will raise an exception in "
+            "Testing an element's truth value will always return True in "
             "future versions.  "
             "Use specific 'len(elem)' or 'elem is not None' test instead.",
             DeprecationWarning, stacklevel=2
diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
index 31ef9bb1ad925e..82e307f78e8e3d 100644
--- a/Lib/zipfile/__init__.py
+++ b/Lib/zipfile/__init__.py
@@ -309,7 +309,7 @@ def _EndRecData(fpin):
         fpin.seek(-sizeEndCentDir, 2)
     except OSError:
         return None
-    data = fpin.read()
+    data = fpin.read(sizeEndCentDir)
     if (len(data) == sizeEndCentDir and
         data[0:4] == stringEndArchive and
         data[-2:] == b"\000\000"):
@@ -329,9 +329,9 @@ def _EndRecData(fpin):
     # record signature. The comment is the last item in the ZIP file and may be
     # up to 64K long.  It is assumed that the "end of central directory" magic
     # number does not appear in the comment.
-    maxCommentStart = max(filesize - (1 << 16) - sizeEndCentDir, 0)
+    maxCommentStart = max(filesize - ZIP_MAX_COMMENT - sizeEndCentDir, 0)
     fpin.seek(maxCommentStart, 0)
-    data = fpin.read()
+    data = fpin.read(ZIP_MAX_COMMENT + sizeEndCentDir)
     start = data.rfind(stringEndArchive)
     if start >= 0:
         # found the magic number; attempt to unpack and interpret
@@ -817,7 +817,10 @@ def seek(self, offset, whence=0):
                 raise ValueError("Can't reposition in the ZIP file while "
                         "there is an open writing handle on it. "
                         "Close the writing handle before trying to read.")
-            self._file.seek(offset, whence)
+            if whence == os.SEEK_CUR:
+                self._file.seek(self._pos + offset)
+            else:
+                self._file.seek(offset, whence)
             self._pos = self._file.tell()
             return self._pos
 
@@ -1160,13 +1163,15 @@ def seek(self, offset, whence=os.SEEK_SET):
             self._offset = buff_offset
             read_offset = 0
         # Fast seek uncompressed unencrypted file
-        elif self._compress_type == ZIP_STORED and self._decrypter is None and read_offset > 0:
+        elif self._compress_type == ZIP_STORED and self._decrypter is None and read_offset != 0:
             # disable CRC checking after first seeking - it would be invalid
             self._expected_crc = None
             # seek actual file taking already buffered data into account
             read_offset -= len(self._readbuffer) - self._offset
             self._fileobj.seek(read_offset, os.SEEK_CUR)
             self._left -= read_offset
+            self._compress_left -= read_offset
+            self._eof = self._left <= 0
             read_offset = 0
             # flush read buffer
             self._readbuffer = b''
diff --git a/Lib/zipfile/_path/__init__.py b/Lib/zipfile/_path/__init__.py
index 79ebb777354e03..b7d4f8906e8bed 100644
--- a/Lib/zipfile/_path/__init__.py
+++ b/Lib/zipfile/_path/__init__.py
@@ -1,3 +1,12 @@
+"""
+A Path-like interface for zipfiles.
+
+This codebase is shared between zipfile.Path in the stdlib
+and zipp in PyPI. See
+https://github.com/python/importlib_metadata/wiki/Development-Methodology
+for more detail.
+"""
+
 import io
 import posixpath
 import zipfile
@@ -5,6 +14,7 @@
 import contextlib
 import pathlib
 import re
+import stat
 import sys
 
 from .glob import Translator
@@ -35,7 +45,7 @@ def _parents(path):
 def _ancestry(path):
     """
     Given a path with elements separated by
-    posixpath.sep, generate all elements of that path
+    posixpath.sep, generate all elements of that path.
 
     >>> list(_ancestry('b/d'))
     ['b/d', 'b']
@@ -47,9 +57,14 @@ def _ancestry(path):
     ['b']
     >>> list(_ancestry(''))
     []
+
+    Multiple separators are treated like a single.
+
+    >>> list(_ancestry('//b//d///f//'))
+    ['//b//d///f', '//b//d', '//b']
     """
     path = path.rstrip(posixpath.sep)
-    while path and path != posixpath.sep:
+    while path.rstrip(posixpath.sep):
         yield path
         path, tail = posixpath.split(path)
 
@@ -187,7 +202,10 @@ def _extract_text_encoding(encoding=None, *args, **kwargs):
 
 class Path:
     """
-    A pathlib-compatible interface for zip files.
+    A :class:`importlib.resources.abc.Traversable` interface for zip files.
+
+    Implements many of the features users enjoy from
+    :class:`pathlib.Path`.
 
     Consider a zip file with this structure::
 
@@ -321,7 +339,7 @@ def open(self, mode='r', *args, pwd=None, **kwargs):
         if self.is_dir():
             raise IsADirectoryError(self)
         zip_mode = mode[0]
-        if not self.exists() and zip_mode == 'r':
+        if zip_mode == 'r' and not self.exists():
             raise FileNotFoundError(self)
         stream = self.root.open(self.at, zip_mode, pwd=pwd)
         if 'b' in mode:
@@ -390,9 +408,11 @@ def match(self, path_pattern):
 
     def is_symlink(self):
         """
-        Return whether this path is a symlink. Always false (python/cpython#82102).
+        Return whether this path is a symlink.
         """
-        return False
+        info = self.root.getinfo(self.at)
+        mode = info.external_attr >> 16
+        return stat.S_ISLNK(mode)
 
     def glob(self, pattern):
         if not pattern:
@@ -401,8 +421,7 @@ def glob(self, pattern):
         prefix = re.escape(self.at)
         tr = Translator(seps='/')
         matches = re.compile(prefix + tr.translate(pattern)).fullmatch
-        names = (data.filename for data in self.root.filelist)
-        return map(self._next, filter(matches, names))
+        return map(self._next, filter(matches, self.root.namelist()))
 
     def rglob(self, pattern):
         return self.glob(f'**/{pattern}')
diff --git a/Lib/zipfile/_path/glob.py b/Lib/zipfile/_path/glob.py
index 69c41d77c3f654..4320f1c0badcf9 100644
--- a/Lib/zipfile/_path/glob.py
+++ b/Lib/zipfile/_path/glob.py
@@ -28,7 +28,7 @@ def translate(self, pattern):
         """
         Given a glob pattern, produce a regex that matches it.
         """
-        return self.extend(self.translate_core(pattern))
+        return self.extend(self.match_dirs(self.translate_core(pattern)))
 
     def extend(self, pattern):
         r"""
@@ -41,6 +41,14 @@ def extend(self, pattern):
         """
         return rf'(?s:{pattern})\Z'
 
+    def match_dirs(self, pattern):
+        """
+        Ensure that zipfile.Path directory names are matched.
+
+        zipfile.Path directory names always end in a slash.
+        """
+        return rf'{pattern}[/]?'
+
     def translate_core(self, pattern):
         r"""
         Given a glob pattern, produce a regex that matches it.
diff --git a/Lib/zipimport.py b/Lib/zipimport.py
index 4e41d109865e85..fb312be115e1c4 100644
--- a/Lib/zipimport.py
+++ b/Lib/zipimport.py
@@ -1,11 +1,9 @@
 """zipimport provides support for importing Python modules from Zip archives.
 
-This module exports three objects:
+This module exports two objects:
 - zipimporter: a class; its constructor takes a path to a Zip archive.
 - ZipImportError: exception raised by zipimporter objects. It's a
   subclass of ImportError, so it can be caught as ImportError, too.
-- _zip_directory_cache: a dict, mapping archive paths to zip directory
-  info dicts, as used in zipimporter._files.
 
 It is usually not needed to use the zipimport module explicitly; it is
 used by the builtin import mechanism for sys.path items that are paths
@@ -256,17 +254,9 @@ def load_module(self, fullname):
 
 
     def get_resource_reader(self, fullname):
-        """Return the ResourceReader for a package in a zip file.
-
-        If 'fullname' is a package within the zip file, return the
-        'ResourceReader' object for the package.  Otherwise return None.
-        """
-        try:
-            if not self.is_package(fullname):
-                return None
-        except ZipImportError:
-            return None
+        """Return the ResourceReader for a module in a zip file."""
         from importlib.readers import ZipReader
+
         return ZipReader(self, fullname)
 
 
diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index 8386e407f49aa3..f5f0ed44884142 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -246,9 +246,9 @@ def library_recipes():
 
     result.extend([
           dict(
-              name="OpenSSL 3.0.13",
-              url="https://www.openssl.org/source/openssl-3.0.13.tar.gz",
-              checksum='88525753f79d3bec27d2fa7c66aa0b92b3aa9498dafd93d7cfa4b3780cdae313',
+              name="OpenSSL 3.0.15",
+              url="https://github.com/openssl/openssl/releases/download/openssl-3.0.15/openssl-3.0.15.tar.gz",
+              checksum='23c666d0edf20f14249b3d8f0368acaee9ab585b09e1de82107c66e1f3ec9533',
               buildrecipe=build_universal_openssl,
               configure=None,
               install=None,
@@ -264,10 +264,10 @@ def library_recipes():
             tk_patches = ['backport_gh71383_fix.patch', 'tk868_on_10_8_10_9.patch', 'backport_gh110950_fix.patch']
 
         else:
-            tcl_tk_ver='8.6.14'
-            tcl_checksum='5880225babf7954c58d4fb0f5cf6279104ce1cd6aa9b71e9a6322540e1c4de66'
+            tcl_tk_ver='8.6.15'
+            tcl_checksum='861e159753f2e2fbd6ec1484103715b0be56be3357522b858d3cbb5f893ffef1'
 
-            tk_checksum='8ffdb720f47a6ca6107eac2dd877e30b0ef7fac14f3a84ebbd0b3612cee41a94'
+            tk_checksum='550969f35379f952b3020f3ab7b9dd5bfd11c1ef7c9b7c6a75f5c49aca793fec'
             tk_patches = []
 
 
diff --git a/Mac/Resources/app-store-compliance.patch b/Mac/Resources/app-store-compliance.patch
new file mode 100644
index 00000000000000..f4b7decc01cf1f
--- /dev/null
+++ b/Mac/Resources/app-store-compliance.patch
@@ -0,0 +1,29 @@
+diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
+index d6c83a75c1c..19ed4e01091 100644
+--- a/Lib/test/test_urlparse.py
++++ b/Lib/test/test_urlparse.py
+@@ -237,11 +237,6 @@ def test_roundtrips(self):
+               '','',''),
+              ('git+ssh', 'git@github.com','/user/project.git',
+               '', '')),
+-            ('itms-services://?action=download-manifest&url=https://example.com/app',
+-             ('itms-services', '', '', '',
+-              'action=download-manifest&url=https://example.com/app', ''),
+-             ('itms-services', '', '',
+-              'action=download-manifest&url=https://example.com/app', '')),
+             ('+scheme:path/to/file',
+              ('', '', '+scheme:path/to/file', '', '', ''),
+              ('', '', '+scheme:path/to/file', '', '')),
+diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
+index 8f724f907d4..148caf742c9 100644
+--- a/Lib/urllib/parse.py
++++ b/Lib/urllib/parse.py
+@@ -59,7 +59,7 @@
+                'imap', 'wais', 'file', 'mms', 'https', 'shttp',
+                'snews', 'prospero', 'rtsp', 'rtsps', 'rtspu', 'rsync',
+                'svn', 'svn+ssh', 'sftp', 'nfs', 'git', 'git+ssh',
+-               'ws', 'wss', 'itms-services']
++               'ws', 'wss']
+
+ uses_params = ['', 'ftp', 'hdl', 'prospero', 'http', 'imap',
+                'https', 'shttp', 'rtsp', 'rtsps', 'rtspu', 'sip',
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 74a438b015a97d..46a37ded970573 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -40,8 +40,10 @@ LINKCC=		@LINKCC@
 AR=		@AR@
 READELF=	@READELF@
 SOABI=		@SOABI@
+ABIFLAGS=	@ABIFLAGS@
+ABI_THREAD=	@ABI_THREAD@
 LDVERSION=	@LDVERSION@
-MODULE_LDFLAGS=@MODULE_LDFLAGS@
+LIBPYTHON=@LIBPYTHON@
 GITVERSION=	@GITVERSION@
 GITTAG=		@GITTAG@
 GITBRANCH=	@GITBRANCH@
@@ -150,7 +152,6 @@ INCLUDEDIR=	@includedir@
 CONFINCLUDEDIR=	$(exec_prefix)/include
 PLATLIBDIR=	@PLATLIBDIR@
 SCRIPTDIR=	$(prefix)/$(PLATLIBDIR)
-ABIFLAGS=	@ABIFLAGS@
 # executable name for shebangs
 EXENAME=	$(BINDIR)/python$(LDVERSION)$(EXE)
 # Variable used by ensurepip
@@ -158,7 +159,7 @@ WHEEL_PKG_DIR=	@WHEEL_PKG_DIR@
 
 # Detailed destination directories
 BINLIBDEST=	@BINLIBDEST@
-LIBDEST=	$(SCRIPTDIR)/python$(VERSION)
+LIBDEST=	$(SCRIPTDIR)/python$(VERSION)$(ABI_THREAD)
 INCLUDEPY=	$(INCLUDEDIR)/python$(LDVERSION)
 CONFINCLUDEPY=	$(CONFINCLUDEDIR)/python$(LDVERSION)
 
@@ -167,7 +168,7 @@ SHLIB_SUFFIX=	@SHLIB_SUFFIX@
 EXT_SUFFIX=	@EXT_SUFFIX@
 LDSHARED=	@LDSHARED@ $(PY_LDFLAGS)
 BLDSHARED=	@BLDSHARED@ $(PY_CORE_LDFLAGS)
-LDCXXSHARED=	@LDCXXSHARED@
+LDCXXSHARED=	@LDCXXSHARED@ $(PY_LDFLAGS)
 DESTSHARED=	$(BINLIBDEST)/lib-dynload
 
 # List of exported symbols for AIX
@@ -178,6 +179,9 @@ EXPORTSFROM=	@EXPORTSFROM@
 EXE=		@EXEEXT@
 BUILDEXE=	@BUILDEXEEXT@
 
+# Name of the patch file to apply for app store compliance
+APP_STORE_COMPLIANCE_PATCH=@APP_STORE_COMPLIANCE_PATCH@
+
 # Short name and location for Mac OS X Python framework
 UNIVERSALSDK=@UNIVERSALSDK@
 PYTHONFRAMEWORK=	@PYTHONFRAMEWORK@
@@ -631,7 +635,9 @@ LIBEXPAT_HEADERS= \
 		Modules/expat/utf8tab.h \
 		Modules/expat/xmlrole.h \
 		Modules/expat/xmltok.h \
-		Modules/expat/xmltok_impl.h
+		Modules/expat/xmltok_impl.h \
+		Modules/expat/xmltok_impl.c \
+		Modules/expat/xmltok_ns.c
 
 ##########################################################################
 # hashlib's HACL* library
@@ -689,7 +695,7 @@ list-targets:
 	@grep -E '^[A-Za-z][-A-Za-z0-9]+:' Makefile | awk -F : '{print $$1}'
 
 .PHONY: build_all
-build_all:	check-clean-src $(BUILDPYTHON) platform sharedmods \
+build_all:	check-clean-src check-app-store-compliance $(BUILDPYTHON) platform sharedmods \
 		gdbhooks Programs/_testembed scripts checksharedmods rundsymutil
 
 .PHONY: build_wasm
@@ -712,6 +718,16 @@ check-clean-src:
 		exit 1; \
 	fi
 
+# Check that the app store compliance patch can be applied (if configured).
+# This is checked as a dry-run against the original library sources;
+# the patch will be actually applied during the install phase.
+.PHONY: check-app-store-compliance
+check-app-store-compliance:
+	@if [ "$(APP_STORE_COMPLIANCE_PATCH)" != "" ]; then \
+		patch --dry-run --quiet --force --strip 1 --directory "$(abs_srcdir)" --input "$(abs_srcdir)/$(APP_STORE_COMPLIANCE_PATCH)"; \
+		echo "App store compliance patch can be applied."; \
+	fi
+
 # Profile generation build must start from a clean tree.
 profile-clean-stamp:
 	$(MAKE) clean
@@ -946,7 +962,7 @@ $(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK): \
 	$(LN) -fsn Versions/Current/$(PYTHONFRAMEWORK) $(PYTHONFRAMEWORKDIR)/$(PYTHONFRAMEWORK)
 	$(LN) -fsn Versions/Current/Resources $(PYTHONFRAMEWORKDIR)/Resources
 
-# This rule is for iOS, which requires an annoyingly just slighly different
+# This rule is for iOS, which requires an annoyingly just slightly different
 # format for frameworks to macOS. It *doesn't* use a versioned framework, and
 # the Info.plist must be in the root of the framework.
 $(PYTHONFRAMEWORKDIR)/$(PYTHONFRAMEWORK): \
@@ -1002,6 +1018,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/codecs.h \
 		$(srcdir)/Include/compile.h \
 		$(srcdir)/Include/complexobject.h \
+		$(srcdir)/Include/critical_section.h \
 		$(srcdir)/Include/descrobject.h \
 		$(srcdir)/Include/dictobject.h \
 		$(srcdir)/Include/dynamic_annotations.h \
@@ -1017,6 +1034,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/intrcheck.h \
 		$(srcdir)/Include/iterobject.h \
 		$(srcdir)/Include/listobject.h \
+		$(srcdir)/Include/lock.h \
 		$(srcdir)/Include/longobject.h \
 		$(srcdir)/Include/marshal.h \
 		$(srcdir)/Include/memoryobject.h \
@@ -1078,6 +1096,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/cpython/compile.h \
 		$(srcdir)/Include/cpython/complexobject.h \
 		$(srcdir)/Include/cpython/context.h \
+		$(srcdir)/Include/cpython/critical_section.h \
 		$(srcdir)/Include/cpython/descrobject.h \
 		$(srcdir)/Include/cpython/dictobject.h \
 		$(srcdir)/Include/cpython/fileobject.h \
@@ -1089,15 +1108,16 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/cpython/import.h \
 		$(srcdir)/Include/cpython/initconfig.h \
 		$(srcdir)/Include/cpython/listobject.h \
+		$(srcdir)/Include/cpython/lock.h \
 		$(srcdir)/Include/cpython/longintrepr.h \
 		$(srcdir)/Include/cpython/longobject.h \
 		$(srcdir)/Include/cpython/memoryobject.h \
 		$(srcdir)/Include/cpython/methodobject.h \
+		$(srcdir)/Include/cpython/modsupport.h \
 		$(srcdir)/Include/cpython/monitoring.h \
 		$(srcdir)/Include/cpython/object.h \
 		$(srcdir)/Include/cpython/objimpl.h \
 		$(srcdir)/Include/cpython/odictobject.h \
-		$(srcdir)/Include/cpython/optimizer.h \
 		$(srcdir)/Include/cpython/picklebufobject.h \
 		$(srcdir)/Include/cpython/pthread_stubs.h \
 		$(srcdir)/Include/cpython/pyatomic.h \
@@ -1643,7 +1663,7 @@ regen-unicodedata:
 regen-all: regen-cases regen-typeslots \
 	regen-token regen-ast regen-keyword regen-sre regen-frozen \
 	regen-pegen-metaparser regen-pegen regen-test-frozenmain \
-	regen-test-levenshtein regen-global-objects regen-jit
+	regen-test-levenshtein regen-global-objects
 	@echo
 	@echo "Note: make regen-stdlib-module-names, make regen-limited-abi, "
 	@echo "make regen-configure, make regen-sbom, and make regen-unicodedata should be run manually"
@@ -2041,7 +2061,6 @@ testuniversal: all
 # This must be run *after* a `make install` has completed the build. The
 # `--with-framework-name` argument *cannot* be used when configuring the build.
 XCFOLDER:=iOSTestbed.$(MULTIARCH).$(shell date +%s)
-XCRESULT=$(XCFOLDER)/$(MULTIARCH).xcresult
 .PHONY: testios
 testios:
 	@if test "$(MACHDEP)" != "ios"; then \
@@ -2060,29 +2079,12 @@ testios:
 		echo "Cannot find a finalized iOS Python.framework. Have you run 'make install' to finalize the framework build?"; \
 		exit 1;\
 	fi
-	# Copy the testbed project into the build folder
-	cp -r $(srcdir)/iOS/testbed $(XCFOLDER)
-	# Copy the framework from the install location to the testbed project.
-	cp -r $(PYTHONFRAMEWORKPREFIX)/* $(XCFOLDER)/Python.xcframework/ios-arm64_x86_64-simulator
-
-	# Run the test suite for the Xcode project, targeting the iOS simulator.
-	# If the suite fails, touch a file in the test folder as a marker
-	if ! xcodebuild test -project $(XCFOLDER)/iOSTestbed.xcodeproj -scheme "iOSTestbed" -destination "platform=iOS Simulator,name=iPhone SE (3rd Generation)" -resultBundlePath $(XCRESULT) -derivedDataPath $(XCFOLDER)/DerivedData ; then \
-	 	touch $(XCFOLDER)/failed; \
-	fi
 
-	# Regardless of success or failure, extract and print the test output
-	xcrun xcresulttool get --path $(XCRESULT) \
-		--id $$( \
-			xcrun xcresulttool get --path $(XCRESULT) --format json | \
-			$(PYTHON_FOR_BUILD) -c "import sys, json; result = json.load(sys.stdin); print(result['actions']['_values'][0]['actionResult']['logRef']['id']['_value'])" \
-		) \
-		--format json | \
-		$(PYTHON_FOR_BUILD) -c "import sys, json; result = json.load(sys.stdin); print(result['subsections']['_values'][1]['subsections']['_values'][0]['emittedOutput']['_value'])"
+	# Clone the testbed project into the XCFOLDER
+	$(PYTHON_FOR_BUILD) $(srcdir)/iOS/testbed clone --framework $(PYTHONFRAMEWORKPREFIX) "$(XCFOLDER)"
 
-	@if test -e $(XCFOLDER)/failed ; then \
-		exit 1; \
-	fi
+	# Run the testbed project
+	$(PYTHON_FOR_BUILD) "$(XCFOLDER)" run --verbose -- test -uall --single-process --rerun -W
 
 # Like test, but using --slow-ci which enables all test resources and use
 # longer timeout. Run an optional pybuildbot.identify script to include
@@ -2259,10 +2261,10 @@ bininstall: commoninstall altbininstall
 	-if test "$(VERSION)" != "$(LDVERSION)"; then \
 		rm -f $(DESTDIR)$(BINDIR)/python$(VERSION)-config; \
 		(cd $(DESTDIR)$(BINDIR); $(LN) -s python$(LDVERSION)-config python$(VERSION)-config); \
-		rm -f $(DESTDIR)$(LIBPC)/python-$(LDVERSION).pc; \
-		(cd $(DESTDIR)$(LIBPC); $(LN) -s python-$(VERSION).pc python-$(LDVERSION).pc); \
-		rm -f $(DESTDIR)$(LIBPC)/python-$(LDVERSION)-embed.pc; \
-		(cd $(DESTDIR)$(LIBPC); $(LN) -s python-$(VERSION)-embed.pc python-$(LDVERSION)-embed.pc); \
+		rm -f $(DESTDIR)$(LIBPC)/python-$(VERSION).pc; \
+		(cd $(DESTDIR)$(LIBPC); $(LN) -s python-$(LDVERSION).pc python-$(VERSION).pc); \
+		rm -f $(DESTDIR)$(LIBPC)/python-$(VERSION)-embed.pc; \
+		(cd $(DESTDIR)$(LIBPC); $(LN) -s python-$(LDVERSION)-embed.pc python-$(VERSION)-embed.pc); \
 	fi
 	-rm -f $(DESTDIR)$(BINDIR)/python3-config
 	(cd $(DESTDIR)$(BINDIR); $(LN) -s python$(VERSION)-config python3-config)
@@ -2343,6 +2345,7 @@ LIBSUBDIRS=	asyncio \
 		__phello__
 TESTSUBDIRS=	idlelib/idle_test \
 		test \
+		test/test_ast \
 		test/archivetestdata \
 		test/audiodata \
 		test/certdata \
@@ -2422,20 +2425,6 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_importlib/namespace_pkgs/project3/parent/child \
 		test/test_importlib/partial \
 		test/test_importlib/resources \
-		test/test_importlib/resources/data01 \
-		test/test_importlib/resources/data01/subdirectory \
-		test/test_importlib/resources/data02 \
-		test/test_importlib/resources/data02/one \
-		test/test_importlib/resources/data02/subdirectory \
-		test/test_importlib/resources/data02/subdirectory/subsubdir \
-		test/test_importlib/resources/data02/two \
-		test/test_importlib/resources/data03 \
-		test/test_importlib/resources/data03/namespace \
-		test/test_importlib/resources/data03/namespace/portion1 \
-		test/test_importlib/resources/data03/namespace/portion2 \
-		test/test_importlib/resources/namespacedata01 \
-		test/test_importlib/resources/zipdata01 \
-		test/test_importlib/resources/zipdata02 \
 		test/test_importlib/source \
 		test/test_inspect \
 		test/test_interpreters \
@@ -2447,6 +2436,7 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_pathlib \
 		test/test_peg_generator \
 		test/test_pydoc \
+		test/test_pyrepl \
 		test/test_sqlite3 \
 		test/test_tkinter \
 		test/test_tomllib \
@@ -2468,6 +2458,7 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_tomllib/data/valid/dates-and-times \
 		test/test_tomllib/data/valid/multiline-basic-str \
 		test/test_tools \
+		test/test_tools/i18n_data \
 		test/test_ttk \
 		test/test_unittest \
 		test/test_unittest/testmock \
@@ -2480,6 +2471,10 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/tkinterdata \
 		test/tokenizedata \
 		test/tracedmodules \
+		test/translationdata \
+		test/translationdata/argparse \
+		test/translationdata/getopt \
+		test/translationdata/optparse \
 		test/typinganndata \
 		test/wheeldata \
 		test/xmltestdata \
@@ -2559,6 +2554,14 @@ libinstall:	all $(srcdir)/Modules/xxmodule.c
 	$(INSTALL_DATA) `cat pybuilddir.txt`/_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH).py \
 		$(DESTDIR)$(LIBDEST); \
 	$(INSTALL_DATA) $(srcdir)/LICENSE $(DESTDIR)$(LIBDEST)/LICENSE.txt
+	@ # If app store compliance has been configured, apply the patch to the
+	@ # installed library code. The patch has been previously validated against
+	@ # the original source tree, so we can ignore any errors that are raised
+	@ # due to files that are missing because of --disable-test-modules etc.
+	@if [ "$(APP_STORE_COMPLIANCE_PATCH)" != "" ]; then \
+		echo "Applying app store compliance patch"; \
+		patch --force --reject-file "$(abs_builddir)/app-store-compliance.rej" --strip 2 --directory "$(DESTDIR)$(LIBDEST)" --input "$(abs_srcdir)/$(APP_STORE_COMPLIANCE_PATCH)" || true ; \
+	fi
 	@ # Build PYC files for the 3 optimization levels (0, 1, 2)
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		$(PYTHON_FOR_BUILD) -Wi $(DESTDIR)$(LIBDEST)/compileall.py \
@@ -2627,7 +2630,7 @@ inclinstall:
 		$(INSTALL) -d -m $(DIRMODE) $(DESTDIR)$(INCLUDEPY)/internal; \
 	else	true; \
 	fi
-	@if test "$(INSTALL_MIMALLOC)" == "yes"; then \
+	@if test "$(INSTALL_MIMALLOC)" = "yes"; then \
 		if test ! -d $(DESTDIR)$(INCLUDEPY)/internal/mimalloc/mimalloc; then \
 			echo "Creating directory $(DESTDIR)$(INCLUDEPY)/internal/mimalloc/mimalloc"; \
 			$(INSTALL) -d -m $(DIRMODE) $(DESTDIR)$(INCLUDEPY)/internal/mimalloc/mimalloc; \
@@ -2648,7 +2651,7 @@ inclinstall:
 		echo $(INSTALL_DATA) $$i $(INCLUDEPY)/internal; \
 		$(INSTALL_DATA) $$i $(DESTDIR)$(INCLUDEPY)/internal; \
 	done
-	@if test "$(INSTALL_MIMALLOC)" == "yes"; then \
+	@if test "$(INSTALL_MIMALLOC)" = "yes"; then \
 		echo $(INSTALL_DATA) $(srcdir)/Include/internal/mimalloc/mimalloc.h $(DESTDIR)$(INCLUDEPY)/internal/mimalloc/mimalloc.h; \
 		$(INSTALL_DATA) $(srcdir)/Include/internal/mimalloc/mimalloc.h $(DESTDIR)$(INCLUDEPY)/internal/mimalloc/mimalloc.h; \
 		for i in $(srcdir)/Include/internal/mimalloc/mimalloc/*.h; \
@@ -2698,8 +2701,8 @@ libainstall: all scripts
 	$(INSTALL_DATA) Modules/Setup.bootstrap $(DESTDIR)$(LIBPL)/Setup.bootstrap
 	$(INSTALL_DATA) Modules/Setup.stdlib $(DESTDIR)$(LIBPL)/Setup.stdlib
 	$(INSTALL_DATA) Modules/Setup.local $(DESTDIR)$(LIBPL)/Setup.local
-	$(INSTALL_DATA) Misc/python.pc $(DESTDIR)$(LIBPC)/python-$(VERSION).pc
-	$(INSTALL_DATA) Misc/python-embed.pc $(DESTDIR)$(LIBPC)/python-$(VERSION)-embed.pc
+	$(INSTALL_DATA) Misc/python.pc $(DESTDIR)$(LIBPC)/python-$(LDVERSION).pc
+	$(INSTALL_DATA) Misc/python-embed.pc $(DESTDIR)$(LIBPC)/python-$(LDVERSION)-embed.pc
 	$(INSTALL_SCRIPT) $(srcdir)/Modules/makesetup $(DESTDIR)$(LIBPL)/makesetup
 	$(INSTALL_SCRIPT) $(srcdir)/install-sh $(DESTDIR)$(LIBPL)/install-sh
 	$(INSTALL_SCRIPT) python-config.py $(DESTDIR)$(LIBPL)/python-config.py
diff --git a/Misc/ACKS b/Misc/ACKS
index eaa7453aaade3e..206c9b849cf0ea 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -520,6 +520,7 @@ Michael Ernst
 Ben Escoto
 Andy Eskilsson
 André Espaze
+Lucas Esposito
 Stefan Esser
 Nicolas Estibals
 Jonathan Eunice
@@ -729,6 +730,7 @@ Larry Hastings
 Tim Hatch
 Zac Hatfield-Dodds
 Shane Hathaway
+Akinori Hattori
 Michael Haubenwallner
 Janko Hauser
 Flavian Hautbois
@@ -751,6 +753,7 @@ Kasun Herath
 Chris Herborth
 Ivan Herman
 Jürgen Hermann
+Joshua Jay Herman
 Gary Herron
 Ernie Hershey
 Thomas Herve
@@ -1096,6 +1099,7 @@ Ivan Levkivskyi
 Ben Lewis
 William Lewis
 Akira Li
+Jiahao Li
 Robert Li
 Xuanji Li
 Zekun Li
@@ -1118,6 +1122,7 @@ Gregor Lingl
 Everett Lipman
 Mirko Liss
 Alexander Liu
+Hui Liu
 Yuan Liu
 Nick Lockwood
 Stephanie Lockwood
@@ -1145,6 +1150,7 @@ Mark Lutz
 Taras Lyapun
 Jim Lynch
 Mikael Lyngvig
+Ilya Lyubavski
 Jeff MacDonald
 John Machin
 Andrew I MacIntyre
@@ -1314,6 +1320,7 @@ Hrvoje Nikšić
 Gregory Nofi
 Jesse Noller
 Bill Noon
+Janek Nouvertné
 Stefan Norberg
 Tim Northover
 Joe Norton
@@ -1546,6 +1553,7 @@ Lisa Roach
 Carl Robben
 Ben Roberts
 Mark Roberts
+Tony Roberts
 Andy Robinson
 Jim Robinson
 Yolanda Robla
@@ -1647,6 +1655,7 @@ Scott Schram
 Robin Schreiber
 Chad J. Schroeder
 Simon-Martin Schroeder
+Brian Schubert
 Christian Schubert
 Sam Schulenburg
 Andreas Schwab
@@ -1665,6 +1674,7 @@ Fred Sells
 Jiwon Seo
 Iñigo Serna
 Joakim Sernbrant
+Rodrigo Girão Serrão
 Roger D. Serwy
 Jerry Seutter
 Pete Sevander
@@ -1737,6 +1747,7 @@ Christopher Smith
 Eric V. Smith
 Ethan H. Smith
 Gregory P. Smith
+Malcolm Smith
 Mark Smith
 Nathaniel J. Smith
 Roy Smith
@@ -1803,6 +1814,7 @@ Reuben Sumner
 Eryk Sun
 Sanjay Sundaresan
 Marek Šuppa
+Danica J. Sutherland
 Hisao Suzuki
 Kalle Svensson
 Andrew Svetlov
@@ -2054,6 +2066,7 @@ Doug Wyatt
 Xiang Zhang
 Robert Xiao
 Florent Xicluna
+Yanbo, Xie
 Xinhang Xu
 Arnon Yaari
 Alakshendra Yadav
diff --git a/Misc/HISTORY b/Misc/HISTORY
index b66413277259dc..d68aaa066771fb 100644
--- a/Misc/HISTORY
+++ b/Misc/HISTORY
@@ -607,7 +607,7 @@ Library
   MemoryError.
 
 - Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings.  Fixed
-  ambigious reverse mappings.  Added many new mappings.  Import mapping is no
+  ambiguous reverse mappings.  Added many new mappings.  Import mapping is no
   longer applied to modules already mapped with full name mapping.
 
 - Issue #23745: The new email header parser now handles duplicate MIME
@@ -2030,7 +2030,7 @@ Library
   initialization of the unquote_to_bytes() table of the urllib.parse module, to
   not waste memory if these modules are not used.
 
-- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
+- Issue #19157: Include the broadcast address in the usable hosts for IPv6
   in ipaddress.
 
 - Issue #11599: When an external command (e.g. compiler) fails, distutils now
@@ -2620,7 +2620,7 @@ Library
 
 - asyncio: Various improvements and small changes not all covered by
   issues listed below.  E.g. wait_for() now cancels the inner task if
-  the timeout occcurs; tweaked the set of exported symbols; renamed
+  the timeout occurs; tweaked the set of exported symbols; renamed
   Empty/Full to QueueEmpty/QueueFull; "with (yield from lock)" now
   uses a separate context manager; readexactly() raises if not enough
   data was read; PTY support tweaks.
@@ -3944,7 +3944,7 @@ Library
 - Issue #18996: TestCase.assertEqual() now more cleverly shorten differing
   strings in error report.
 
-- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation.
+- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string representation.
 
 - Issue #18978: ``urllib.request.Request`` now allows the method to be
   indicated on the class and no longer sets it to None in ``__init__``.
@@ -3952,7 +3952,7 @@ Library
 - Issue #18626: the inspect module now offers a basic command line
   introspection interface (Initial patch by Claudiu Popa)
 
-- Issue #3015: Fixed tkinter with wantobject=False.  Any Tcl command call
+- Issue #3015: Fixed tkinter with ``wantobjects=False``.  Any Tcl command call
   returned empty string.
 
 - Issue #19037: The mailbox module now makes all changes to maildir files
@@ -4191,7 +4191,7 @@ Library
 - Issue #18532: Change the builtin hash algorithms' names to lower case names
   as promised by hashlib's documentation.
 
-- Issue #8713: add new spwan and forkserver start methods, and new functions
+- Issue #8713: add new spawn and forkserver start methods, and new functions
   get_all_start_methods, get_start_method, and set_start_method, to
   multiprocessing.
 
@@ -4524,7 +4524,7 @@ Core and Builtins
 - Issue #16613: Add *m* argument to ``collections.Chainmap.new_child`` to
   allow the new child map to be specified explicitly.
 
-- Issue #16730: importlib.machinery.FileFinder now no longers raises an
+- Issue #16730: importlib.machinery.FileFinder now no longer raises an
   exception when trying to populate its cache and it finds out the directory is
   unreadable or has turned into a file. Reported and diagnosed by
   David Pritchard.
@@ -4832,7 +4832,7 @@ Library
   on Windows and adds no value over and above python -m pydoc ...
 
 - Issue #18155: The csv module now correctly handles csv files that use
-  a delimter character that has a special meaning in regexes, instead of
+  a delimiter character that has a special meaning in regexes, instead of
   throwing an exception.
 
 - Issue #14360: encode_quopri can now be successfully used as an encoder
@@ -5590,7 +5590,7 @@ Library
 - Issue #16248: Disable code execution from the user's home directory by
   tkinter when the -E flag is passed to Python.  Patch by Zachary Ware.
 
-- Issue #13390: New function :func:`sys.getallocatedblocks()` returns the
+- Issue #13390: New function :func:`sys.getallocatedblocks` returns the
   number of memory blocks currently allocated.
 
 - Issue #16628: Fix a memory leak in ctypes.resize().
@@ -6157,7 +6157,7 @@ Tests
   starting with a ".".  Patch by Sebastian Kreft.
 
 - Issue #13390: The ``-R`` option to regrtest now also checks for memory
-  allocation leaks, using :func:`sys.getallocatedblocks()`.
+  allocation leaks, using :func:`sys.getallocatedblocks`.
 
 - Issue #16559: Add more tests for the json module, including some from the
   official test suite at json.org.  Patch by Serhiy Storchaka.
@@ -6329,7 +6329,7 @@ Documentation
 
 - Issue #15940: Specify effect of locale on time functions.
 
-- Issue #17538: Document XML vulnerabilties
+- Issue #17538: Document XML vulnerabilities
 
 - Issue #16642: sched.scheduler timefunc initial default is time.monotonic.
   Patch by Ramchandra Apte
@@ -6676,7 +6676,7 @@ Library
 
 - Issue #14669: Fix pickling of connections and sockets on Mac OS X by
   sending/receiving an acknowledgment after file descriptor transfer.
-  TestPicklingConnection has been reenabled for Mac OS X.
+  TestPicklingConnection has been re-enabled for Mac OS X.
 
 - Issue #11062: Fix adding a message from file to Babyl mailbox.
 
@@ -7114,7 +7114,7 @@ Build
 - Issue #14330: For cross builds, don't use host python, use host search paths
   for host compiler.
 
-- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module.
+- Issue #15235: Allow Berkeley DB versions up to 5.3 to build the dbm module.
 
 - Issue #15268: Search curses.h in /usr/include/ncursesw.
 
@@ -7264,7 +7264,7 @@ Library
   called with no arguments.
 
 - Issue #14653: email.utils.mktime_tz() no longer relies on system
-  mktime() when timezone offest is supplied.
+  mktime() when timezone offset is supplied.
 
 - Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use
   of predefined compression dictionaries. Original patch by Sam Rushing.
@@ -7606,7 +7606,7 @@ Library
 - Issue #14773: Fix os.fwalk() failing on dangling symlinks.
 
 - Issue #12541: Be lenient with quotes around Realm field of HTTP Basic
-  Authentation in urllib2.
+  Authentication in urllib2.
 
 - Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add
   doc entry. Add tarfile.filemode alias with deprecation warning.
@@ -7673,7 +7673,7 @@ Library
 IDLE
 ----
 
-- Issue #14958: Change IDLE systax highlighting to recognize all string and
+- Issue #14958: Change IDLE syntax highlighting to recognize all string and
   byte literals supported in Python 3.3.
 
 - Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu.
@@ -10176,7 +10176,7 @@ IDLE
 - Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
   (Patch by Roger Serwy)
 
-- Issue #9871: Prevent IDLE 3 crash when given byte stings
+- Issue #9871: Prevent IDLE 3 crash when given byte strings
   with invalid hex escape sequences, like b'\x0'.
   (Original patch by Claudiu Popa.)
 
@@ -12098,7 +12098,7 @@ Library
 - Issue #9632: Remove sys.setfilesystemencoding() function: use PYTHONFSENCODING
   environment variable to set the filesystem encoding at Python startup.
   sys.setfilesystemencoding() creates inconsistencies because it is unable to
-  reencode all filenames in all objects.
+  re-encode all filenames in all objects.
 
 - Issue #9410: Various optimizations to the pickle module, leading to speedups
   up to 4x (depending on the benchmark).  Mostly ported from Unladen Swallow;
@@ -12509,7 +12509,7 @@ Library
 - Issue #9605: posix.getlogin() decodes the username with file filesystem
   encoding and surrogateescape error handler. Patch written by David Watson.
 
-- Issue #9604: posix.initgroups() encodes the username using the fileystem
+- Issue #9604: posix.initgroups() encodes the username using the filesystem
   encoding and surrogateescape error handler. Patch written by David Watson.
 
 - Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name
@@ -12667,7 +12667,7 @@ What's New in Python 3.2 Alpha 1?
 Core and Builtins
 -----------------
 
-- Issue #8991: convertbuffer() rejects discontigious buffers.
+- Issue #8991: convertbuffer() rejects discontiguous buffers.
 
 - Issue #7616: Fix copying of overlapping memoryview slices with the Intel
   compiler.
@@ -13211,7 +13211,7 @@ Library
 
 - Issue #7989: Added pure python implementation of the `datetime` module.  The C
   module is renamed to `_datetime` and if available, overrides all classes
-  defined in datetime with fast C impementation.  Python implementation is based
+  defined in datetime with fast C implementation.  Python implementation is based
   on the original python prototype for the datetime module by Tim Peters with
   minor modifications by the PyPy project.  The test suite now tests `datetime`
   module with and without `_datetime` acceleration using the same test cases.
@@ -15049,7 +15049,7 @@ Extension Modules
   an error.  The _PY_STRUCT_FLOAT_COERCE constant has been removed.
   The version number has been bumped to 0.3.
 
-- Issue #5359: Readd the Berkeley DB detection code to allow _dbm be built
+- Issue #5359: Re-add the Berkeley DB detection code to allow _dbm be built
   using Berkeley DB.
 
 Tests
@@ -17028,7 +17028,7 @@ Extension Modules
   and renamed to filter(), map(), and zip().  Also, renamed
   izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
 
-- Issue #1762972: Readded the reload() function as imp.reload().
+- Issue #1762972: Re-added the reload() function as imp.reload().
 
 - Bug #2111: mmap segfaults when trying to write a block opened with
   PROT_READ.
@@ -18448,7 +18448,7 @@ Core and builtins
 
 - Fixed bug #1459029 - unicode reprs were double-escaped.
 
-- Patch #1396919: The system scope threads are reenabled on FreeBSD
+- Patch #1396919: The system scope threads are re-enabled on FreeBSD
   5.4 and later versions.
 
 - Bug #1115379: Compiling a Unicode string with an encoding declaration
@@ -21803,7 +21803,7 @@ Library
 - New csv package makes it easy to read/write CSV files.
 
 - Module shlex has been extended to allow posix-like shell parsings,
-  including a split() function for easy spliting of quoted strings and
+  including a split() function for easy splitting of quoted strings and
   commands. An iterator interface was also implemented.
 
 Tools/Demos
@@ -27751,7 +27751,7 @@ Fri Mar 12 22:15:43 1999  Guido van Rossum  <guido@eric.cnri.reston.va.us>
 
 	The filename to URL conversion didn't properly quote special
 	characters.
-	The URL to filename didn't properly unquote special chatacters.
+	The URL to filename didn't properly unquote special characters.
 
 	* Objects/floatobject.c:
 	OK, try again.  Vladimir gave me a fix for the alignment bus error,
@@ -27807,7 +27807,7 @@ Wed Mar 10 22:55:47 1999  Guido van Rossum  <guido@eric.cnri.reston.va.us>
 	    classes in selected module
 	    methods of selected class
 
-	Sinlge clicking in a directory, module or class item updates the next
+	Single clicking in a directory, module or class item updates the next
 	column with info about the selected item.  Double clicking in a
 	module, class or method item opens the file (and selects the clicked
 	item if it is a class or method).
@@ -28130,7 +28130,7 @@ webchecker and other ftp retrieves.
 
 - ConfigParser's get() method now accepts an optional keyword argument
 (vars) that is substituted on top of the defaults that were setup in
-__init__.  You can now also have recusive references in your
+__init__.  You can now also have recursive references in your
 configuration file.
 
 - Some improvements to the Queue module, including a put_nowait()
@@ -28209,7 +28209,7 @@ core.
 not.
 
 - The curses module implements an optional nlines argument to
-w.scroll().  (It then calls wscrl(win, nlines) instead of scoll(win).)
+w.scroll().  (It then calls wscrl(win, nlines) instead of scroll(win).)
 
 Changes to tools
 ----------------
@@ -28504,7 +28504,7 @@ PyEval_GetGlobals.
 - glmodule.c: check in the changed version after running the stubber
 again -- this solves the conflict with curses over the 'clear' entry
 point much nicer.  (Jack Jansen had checked in the changes to cstubs
-eons ago, but I never regenrated glmodule.c :-( )
+eons ago, but I never regenerated glmodule.c :-( )
 
 - frameobject.c: fix reference count bug in PyFrame_New.  Vladimir
 Marangozov.
@@ -28581,7 +28581,7 @@ idiom L1[len(L1):] = L2.
 
 - Better error messages when a sequence is indexed with a non-integer.
 
-- Bettter error message when calling a non-callable object (include
+- Better error message when calling a non-callable object (include
 the type in the message).
 
 Python services
@@ -28656,7 +28656,7 @@ Internet Protocols and Support
 - imaplib.py: new version from Piers Lauder.
 
 - smtplib.py: change sendmail() method to accept a single string or a
-list or strings as the destination (commom newbie mistake).
+list or strings as the destination (common newbie mistake).
 
 - poplib.py: LIST with a msg argument fixed.
 
@@ -31109,7 +31109,7 @@ encoding/decoding CGI form arguments.  Catch all errors from the ftp
 module.  HTTP requests now add the Host: header line.  The proxy
 variable names are now mapped to lower case, for Windows.  The
 spliturl() function no longer erroneously throws away all data past
-the first newline.  The basejoin() function now intereprets "../"
+the first newline.  The basejoin() function now interprets "../"
 correctly.  I *believe* that the problems with "exception raised in
 __del__" under certain circumstances have been fixed (mostly by
 changes elsewher in the interpreter).
@@ -31397,7 +31397,7 @@ changes and fixes.
 
 - Added a bunch of new winfo options to Tkinter.py; we should now be
 up to date with Tk 4.2.  The new winfo options supported are:
-mananger, pointerx, pointerxy, pointery, server, viewable, visualid,
+manager, pointerx, pointerxy, pointery, server, viewable, visualid,
 visualsavailable.
 
 - The broken bind() method on Canvas objects defined in the Canvas.py
@@ -32552,7 +32552,7 @@ The same applies to posixfile.open() and the socket method makefile().
 is being maintained and distributed separately.
 
 - Improved support for the Apple Macintosh, in part by Jack Jansen,
-e.g. interfaces to (a few) resource mananger functions, get/set file
+e.g. interfaces to (a few) resource manager functions, get/set file
 type and creator, gestalt, sound manager, speech manager, MacTCP, comm
 toolbox, and the think C console library.  This is being maintained
 and distributed separately.
@@ -33229,7 +33229,7 @@ sys.argv[0]; it can simply do "if __name__ == '__main__': main()".
 * When an object is printed by the print statement, its implementation
 of str() is used.  This means that classes can define __str__(self) to
 direct how their instances are printed.  This is different from
-__repr__(self), which should define an unambigous string
+__repr__(self), which should define an unambiguous string
 representation of the instance.  (If __str__() is not defined, it
 defaults to __repr__().)
 
@@ -34366,7 +34366,7 @@ eval_code) and ceval.h (which doesn't need compile.hand declares the
 rest)
 
 ceval.h defines macros BGN_SAVE / END_SAVE for use with threads (to
-improve the parallellism of multi-threaded programs by letting other
+improve the parallelism of multi-threaded programs by letting other
 Python code run when a blocking system call or something similar is
 made)
 
@@ -34514,7 +34514,7 @@ names listed in a 'global' statement must not be used in the function
 before the statement is reached.
 
 Remember that you don't need to use 'global' if you only want to *use*
-a global variable in a function; nor do you need ot for assignments to
+a global variable in a function; nor do you need to for assignments to
 parts of global variables (e.g., list or dictionary items or
 attributes of class instances).  This has not changed; in fact
 assignment to part of a global variable was the standard workaround.
diff --git a/Misc/NEWS.d/3.10.0a1.rst b/Misc/NEWS.d/3.10.0a1.rst
index 9a729a45b160eb..f09842f1e77dea 100644
--- a/Misc/NEWS.d/3.10.0a1.rst
+++ b/Misc/NEWS.d/3.10.0a1.rst
@@ -97,7 +97,7 @@ convention. Patch by Donghee Na.
 .. nonce: aJS9B3
 .. section: Core and Builtins
 
-Port the :mod:`_bisect` module to the multi-phase initialization API
+Port the :mod:`!_bisect` module to the multi-phase initialization API
 (:pep:`489`).
 
 ..
@@ -128,7 +128,7 @@ Taskaya.
 .. nonce: lh335O
 .. section: Core and Builtins
 
-Port the :mod:`_lsprof` extension module to multi-phase initialization
+Port the :mod:`!_lsprof` extension module to multi-phase initialization
 (:pep:`489`).
 
 ..
@@ -148,7 +148,7 @@ Port the :mod:`cmath` extension module to multi-phase initialization
 .. nonce: jiXmyT
 .. section: Core and Builtins
 
-Port the :mod:`_scproxy` extension module to multi-phase initialization
+Port the :mod:`!_scproxy` extension module to multi-phase initialization
 (:pep:`489`).
 
 ..
@@ -168,7 +168,7 @@ Port the :mod:`termios` extension module to multi-phase initialization
 .. nonce: QuDIut
 .. section: Core and Builtins
 
-Convert the :mod:`_sha256` extension module types to heap types.
+Convert the :mod:`!_sha256` extension module types to heap types.
 
 ..
 
@@ -187,7 +187,7 @@ classes with a huge amount of arguments. Patch by Pablo Galindo.
 .. nonce: CnRME3
 .. section: Core and Builtins
 
-Port the :mod:`_overlapped` extension module to multi-phase initialization
+Port the :mod:`!_overlapped` extension module to multi-phase initialization
 (:pep:`489`).
 
 ..
@@ -197,7 +197,7 @@ Port the :mod:`_overlapped` extension module to multi-phase initialization
 .. nonce: X9CZgo
 .. section: Core and Builtins
 
-Port the :mod:`_curses_panel` extension module to multi-phase initialization
+Port the :mod:`!_curses_panel` extension module to multi-phase initialization
 (:pep:`489`).
 
 ..
@@ -207,7 +207,7 @@ Port the :mod:`_curses_panel` extension module to multi-phase initialization
 .. nonce: 5jZymK
 .. section: Core and Builtins
 
-Port the :mod:`_opcode` extension module to multi-phase initialization
+Port the :mod:`!_opcode` extension module to multi-phase initialization
 (:pep:`489`).
 
 ..
@@ -282,7 +282,7 @@ initialized ``_ast`` module.
 .. nonce: vcxSUa
 .. section: Core and Builtins
 
-Convert :mod:`_operator` to use :c:func:`PyType_FromSpec`.
+Convert :mod:`!_operator` to use :c:func:`PyType_FromSpec`.
 
 ..
 
@@ -291,7 +291,7 @@ Convert :mod:`_operator` to use :c:func:`PyType_FromSpec`.
 .. nonce: fubBkb
 .. section: Core and Builtins
 
-Port :mod:`_sha3` to multi-phase init.  Convert static types to heap types.
+Port :mod:`!_sha3` to multi-phase init.  Convert static types to heap types.
 
 ..
 
@@ -300,7 +300,7 @@ Port :mod:`_sha3` to multi-phase init.  Convert static types to heap types.
 .. nonce: FC13e7
 .. section: Core and Builtins
 
-Port the :mod:`_blake2` extension module to the multi-phase initialization
+Port the :mod:`!_blake2` extension module to the multi-phase initialization
 API (:pep:`489`).
 
 ..
@@ -339,7 +339,7 @@ The output of ``python --help`` contains now only ASCII characters.
 .. nonce: O0d3ym
 .. section: Core and Builtins
 
-Port the :mod:`_sha1`, :mod:`_sha512`, and :mod:`_md5` extension modules to
+Port the :mod:`!_sha1`, :mod:`!_sha512`, and :mod:`!_md5` extension modules to
 multi-phase initialization API (:pep:`489`).
 
 ..
@@ -636,7 +636,7 @@ Remove the remaining files from the old parser and the :mod:`symbol` module.
 .. nonce: _yI-ax
 .. section: Core and Builtins
 
-Convert :mod:`_bz2` to use :c:func:`PyType_FromSpec`.
+Convert :mod:`!_bz2` to use :c:func:`PyType_FromSpec`.
 
 ..
 
@@ -666,7 +666,7 @@ by Brandt Bucher.
 .. nonce: 61iyYh
 .. section: Core and Builtins
 
-Port :mod:`_gdbm` to multiphase initialization.
+Port :mod:`!_gdbm` to multiphase initialization.
 
 ..
 
@@ -696,7 +696,7 @@ for emitting syntax errors. Patch by Pablo Galindo.
 .. nonce: mmlp3Q
 .. section: Core and Builtins
 
-Port :mod:`_dbm` to multiphase initialization.
+Port :mod:`!_dbm` to multiphase initialization.
 
 ..
 
@@ -1010,7 +1010,7 @@ Port :mod:`mmap` to multiphase initialization.
 .. nonce: Kfe9fT
 .. section: Core and Builtins
 
-Port :mod:`_lzma` to multiphase initialization.
+Port :mod:`!_lzma` to multiphase initialization.
 
 ..
 
@@ -1032,7 +1032,7 @@ the :meth:`~object.__int__` method but do not have the
 .. nonce: AkRzjb
 .. section: Core and Builtins
 
-Add :meth:`int.bit_count()`, counting the number of ones in the binary
+Add :meth:`int.bit_count`, counting the number of ones in the binary
 representation of an integer. Patch by Niklas Fiekas.
 
 ..
@@ -1499,7 +1499,7 @@ used to cause ZeroDivisionError now cause an OverflowError instead.
 .. nonce: rju34k
 .. section: Library
 
-Add :func:`os.cpu_count()` support for VxWorks RTOS.
+Add :func:`os.cpu_count` support for VxWorks RTOS.
 
 ..
 
@@ -2452,7 +2452,7 @@ Added the *root_dir* and *dir_fd* parameters in :func:`glob.glob`.
 .. nonce: X-TJZO
 .. section: Library
 
-Fix :meth:`IMAP4.noop()` when debug mode is enabled (ex: ``imaplib.Debug =
+Fix :meth:`IMAP4.noop` when debug mode is enabled (ex: ``imaplib.Debug =
 3``).
 
 ..
diff --git a/Misc/NEWS.d/3.10.0a2.rst b/Misc/NEWS.d/3.10.0a2.rst
index 79f570439b52b8..3e82de9ef266d6 100644
--- a/Misc/NEWS.d/3.10.0a2.rst
+++ b/Misc/NEWS.d/3.10.0a2.rst
@@ -226,8 +226,8 @@ thread at the time the function is called.
 .. section: Core and Builtins
 
 Enable ``from __future__ import annotations`` (:pep:`563`) by default. The
-values found in :attr:`__annotations__` dicts are now strings, e.g. ``{"x":
-"int"}`` instead of ``{"x": int}``.
+values found in :attr:`~object.__annotations__` dicts are now strings, for
+example ``{"x": "int"}`` instead of ``{"x": int}``.
 
 ..
 
@@ -362,7 +362,7 @@ plistlib: fix parsing XML plists with hexadecimal integer values
 .. nonce: 85BsRA
 .. section: Library
 
-Fix an incorrectly formatted error from :meth:`_codecs.charmap_decode` when
+Fix an incorrectly formatted error from :meth:`!_codecs.charmap_decode` when
 called with a mapped value outside the range of valid Unicode code points.
 PR by Max Bernstein.
 
@@ -383,7 +383,7 @@ Inwood.
 .. nonce: jd_gkA
 .. section: Library
 
-:meth:`sched.scheduler.cancel()` will now cancel the correct event, if two
+:meth:`sched.scheduler.cancel` will now cancel the correct event, if two
 events with same priority are scheduled for the same time. Patch by Bar
 Harel.
 
diff --git a/Misc/NEWS.d/3.10.0a3.rst b/Misc/NEWS.d/3.10.0a3.rst
index 179cf3e9cfb08c..33c3e14b7a4bcf 100644
--- a/Misc/NEWS.d/3.10.0a3.rst
+++ b/Misc/NEWS.d/3.10.0a3.rst
@@ -477,7 +477,7 @@ object belongs to, potentially breaking the unpickling of those objects.
 
 Simplify the :mod:`importlib` external bootstrap code:
 ``importlib._bootstrap_external`` now uses regular imports to import builtin
-modules. When it is imported, the builtin :func:`__import__()` function is
+modules. When it is imported, the builtin :func:`__import__` function is
 already fully working and so can be used to import builtin modules like
 :mod:`sys`. Patch by Victor Stinner.
 
@@ -517,8 +517,8 @@ Port the ``_signal`` extension module to the multi-phase initialization API
 .. nonce: Wh5svI
 .. section: Library
 
-:func:`time.time()`, :func:`time.perf_counter()` and
-:func:`time.monotonic()` functions can no longer fail with a Python fatal
+:func:`time.time`, :func:`time.perf_counter` and
+:func:`time.monotonic` functions can no longer fail with a Python fatal
 error, instead raise a regular Python exception on failure.
 
 ..
@@ -550,10 +550,10 @@ deduplicate, use type to cache key). Patch provided by Yurii Karabas.
 .. nonce: iDbHrw
 .. section: Library
 
-:func:`time.perf_counter()` on Windows and :func:`time.monotonic()` on macOS
+:func:`time.perf_counter` on Windows and :func:`time.monotonic` on macOS
 are now system-wide. Previously, they used an offset computed at startup to
 reduce the precision loss caused by the float type. Use
-:func:`time.perf_counter_ns()` and :func:`time.monotonic_ns()` added in
+:func:`time.perf_counter_ns` and :func:`time.monotonic_ns` added in
 Python 3.7 to avoid this precision loss.
 
 ..
@@ -1386,7 +1386,7 @@ Python already implicitly installs signal handlers: see
 
 The ``Py_TRASHCAN_BEGIN`` macro no longer accesses PyTypeObject attributes,
 but now can get the condition by calling the new private
-:c:func:`_PyTrash_cond()` function which hides implementation details.
+:c:func:`!_PyTrash_cond()` function which hides implementation details.
 
 ..
 
diff --git a/Misc/NEWS.d/3.10.0a4.rst b/Misc/NEWS.d/3.10.0a4.rst
index 398f7e5d3422cb..19f0db9a6be5e9 100644
--- a/Misc/NEWS.d/3.10.0a4.rst
+++ b/Misc/NEWS.d/3.10.0a4.rst
@@ -193,7 +193,7 @@ subinterpreters. Patch by Victor Stinner.
 .. nonce: j7nl6A
 .. section: Core and Builtins
 
-Make :c:func:`_PyUnicode_FromId` function compatible with subinterpreters.
+Make :c:func:`!_PyUnicode_FromId` function compatible with subinterpreters.
 Each interpreter now has an array of identifier objects (interned strings
 decoded from UTF-8). Patch by Victor Stinner.
 
@@ -367,7 +367,7 @@ uses "options" instead.
 .. nonce: Quy3zn
 .. section: Library
 
-Port the :mod:`_thread` extension module to the multiphase initialization
+Port the :mod:`!_thread` extension module to the multiphase initialization
 API (:pep:`489`) and convert its static types to heap types.
 
 ..
@@ -412,7 +412,7 @@ be created automatically.
 
 ``logging.disable`` will now validate the types and value of its parameter.
 It also now accepts strings representing the levels (as does
-``loging.setLevel``) instead of only the numerical values.
+``logging.setLevel``) instead of only the numerical values.
 
 ..
 
@@ -709,7 +709,7 @@ directories.
 .. nonce: ek38d_
 .. section: Library
 
-Add :func:`os.set_blocking()` support for VxWorks RTOS.
+Add :func:`os.set_blocking` support for VxWorks RTOS.
 
 ..
 
@@ -960,8 +960,8 @@ explicitly and so not exported.
 .. nonce: Je08Ny
 .. section: C API
 
-Remove the private :c:func:`_Py_fopen` function which is no longer needed.
-Use :c:func:`_Py_wfopen` or :c:func:`_Py_fopen_obj` instead. Patch by Victor
+Remove the private :c:func:`!_Py_fopen` function which is no longer needed.
+Use :c:func:`!_Py_wfopen` or :c:func:`!_Py_fopen_obj` instead. Patch by Victor
 Stinner.
 
 ..
diff --git a/Misc/NEWS.d/3.10.0a5.rst b/Misc/NEWS.d/3.10.0a5.rst
index dc95e8ce072fd9..a85ea1ff1c2817 100644
--- a/Misc/NEWS.d/3.10.0a5.rst
+++ b/Misc/NEWS.d/3.10.0a5.rst
@@ -108,7 +108,7 @@ a slice at the start of the ``bytearray`` to a shorter byte string).
 .. nonce: WfTdfg
 .. section: Core and Builtins
 
-Fix the :c:func:`_PyUnicode_FromId` function (_Py_IDENTIFIER(var) API) when
+Fix the :c:func:`!_PyUnicode_FromId` function (_Py_IDENTIFIER(var) API) when
 :c:func:`Py_Initialize` / :c:func:`Py_Finalize` is called multiple times:
 preserve ``_PyRuntime.unicode_ids.next_index`` value.
 
diff --git a/Misc/NEWS.d/3.10.0a6.rst b/Misc/NEWS.d/3.10.0a6.rst
index bad3528084897b..31b7df2c61158e 100644
--- a/Misc/NEWS.d/3.10.0a6.rst
+++ b/Misc/NEWS.d/3.10.0a6.rst
@@ -315,7 +315,7 @@ Adds :const:`resource.RLIMIT_KQUEUES` constant from FreeBSD to the
 .. section: Library
 
 Make the pure Python implementation of :mod:`xml.etree.ElementTree` behave
-the same as the C implementation (:mod:`_elementree`) regarding default
+the same as the C implementation (:mod:`!_elementree`) regarding default
 attribute values (by not setting ``specified_attributes=1``).
 
 ..
diff --git a/Misc/NEWS.d/3.10.0a7.rst b/Misc/NEWS.d/3.10.0a7.rst
index fe6213d95a88bb..d866e805fd3a7e 100644
--- a/Misc/NEWS.d/3.10.0a7.rst
+++ b/Misc/NEWS.d/3.10.0a7.rst
@@ -83,7 +83,7 @@ instruction dispatch a bit.
 .. nonce: PhaT-B
 .. section: Core and Builtins
 
-Fix reference leak in the :mod:`_hashopenssl` extension. Patch by Pablo
+Fix reference leak in the :mod:`!_hashopenssl` extension. Patch by Pablo
 Galindo.
 
 ..
@@ -654,7 +654,7 @@ support importlib.invalidate_caches(). Patch by Desmond Cheong.
 .. nonce: 3r0HFY
 .. section: Library
 
-Fail fast in :func:`shutil.move()` to avoid creating destination directories
+Fail fast in :func:`shutil.move` to avoid creating destination directories
 on failure.
 
 ..
@@ -701,8 +701,8 @@ sessions in :mod:`pdb`'s interactive mode.
 When the :data:`tempfile.tempdir` global variable is set to a value of type
 bytes, it is now handled consistently.  Previously exceptions could be
 raised from some tempfile APIs when the directory did not already exist in
-this situation.  Also ensures that the :func:`tempfile.gettempdir()` and
-:func:`tempfile.gettempdirb()` functions *always* return ``str`` and
+this situation.  Also ensures that the :func:`tempfile.gettempdir` and
+:func:`tempfile.gettempdirb` functions *always* return ``str`` and
 ``bytes`` respectively.
 
 ..
@@ -715,7 +715,7 @@ this situation.  Also ensures that the :func:`tempfile.gettempdir()` and
 Expose ``X509_V_FLAG_ALLOW_PROXY_CERTS`` as
 :const:`~ssl.VERIFY_ALLOW_PROXY_CERTS` to allow proxy certificate validation
 as explained in
-https://www.openssl.org/docs/man1.1.1/man7/proxy-certificates.html.
+https://docs.openssl.org/1.1.1/man7/proxy-certificates/.
 
 ..
 
diff --git a/Misc/NEWS.d/3.10.0b1.rst b/Misc/NEWS.d/3.10.0b1.rst
index 640f3ee58adbae..406a5d7853edc0 100644
--- a/Misc/NEWS.d/3.10.0b1.rst
+++ b/Misc/NEWS.d/3.10.0b1.rst
@@ -182,7 +182,7 @@ normally be possible, but might occur in some unusual circumstances.
 .. nonce: u5Y6bS
 .. section: Core and Builtins
 
-Importing the :mod:`_signal` module in a subinterpreter has no longer side
+Importing the :mod:`!_signal` module in a subinterpreter has no longer side
 effects.
 
 ..
@@ -277,7 +277,7 @@ cause any runtime effects with ``from __future__ import annotations``.
 .. section: Core and Builtins
 
 :exc:`SyntaxError` exceptions raised by the interpreter will highlight the
-full error range of the expression that consistutes the syntax error itself,
+full error range of the expression that constitutes the syntax error itself,
 instead of just where the problem is detected. Patch by Pablo Galindo.
 
 ..
@@ -776,11 +776,11 @@ builtins.open() is now io.open().
 .. nonce: o1zEk_
 .. section: Library
 
-The Python :func:`_pyio.open` function becomes a static method to behave as
+The Python :func:`!_pyio.open` function becomes a static method to behave as
 :func:`io.open` built-in function: don't become a bound method when stored
 as a class variable. It becomes possible since static methods are now
-callable in Python 3.10. Moreover, :func:`_pyio.OpenWrapper` becomes a
-simple alias to :func:`_pyio.open`. Patch by Victor Stinner.
+callable in Python 3.10. Moreover, :func:`!_pyio.OpenWrapper` becomes a
+simple alias to :func:`!_pyio.open`. Patch by Victor Stinner.
 
 ..
 
@@ -941,7 +941,7 @@ result from ``entry_points()`` as deprecated.
 
 ..
 
-.. gh: 47383
+.. gh-issue: 47383
 .. date: 2021-04-08-19-32-26
 .. nonce: YI1hdL
 .. section: Library
@@ -958,7 +958,7 @@ Patch by Jelle Zijlstra.
 .. nonce: nnVd3h
 .. section: Library
 
-Add an ``encoding`` parameter :func:`logging.fileConfig()`.
+Add an ``encoding`` parameter :func:`logging.fileConfig`.
 
 ..
 
@@ -1270,7 +1270,7 @@ Fix thread locks in zlib module may go wrong in rare case. Patch by Ma Lin.
 .. nonce: oi6Kdb
 .. section: Library
 
-Fix dataclasses with ``InitVar``\s and :func:`~dataclasses.replace()`. Patch
+Fix dataclasses with ``InitVar``\s and :func:`~dataclasses.replace`. Patch
 by Claudiu Popa.
 
 ..
@@ -1310,11 +1310,11 @@ functions in the :mod:`os` module.
 .. nonce: 9adF3E
 .. section: Library
 
-:func:`os.path.expanduser()` now refuses to guess Windows home directories
+:func:`os.path.expanduser` now refuses to guess Windows home directories
 if the basename of current user's home directory does not match their
 username.
 
-:meth:`pathlib.Path.expanduser()` and :meth:`~pathlib.Path.home()` now
+:meth:`pathlib.Path.expanduser` and :meth:`~pathlib.Path.home` now
 consistently raise :exc:`RuntimeError` exception when a home directory
 cannot be resolved. Previously a :exc:`KeyError` exception could be raised
 on Windows when the ``"USERNAME"``  environment variable was unset.
@@ -1516,7 +1516,7 @@ Adds additional arguments to :func:`os.startfile` function.
 .. nonce: F0Cg6X
 .. section: Windows
 
-Avoid raising errors from :meth:`pathlib.Path.exists()` when passed an
+Avoid raising errors from :meth:`pathlib.Path.exists` when passed an
 invalid filename.
 
 ..
diff --git a/Misc/NEWS.d/3.11.0a1.rst b/Misc/NEWS.d/3.11.0a1.rst
index e6cf9c001a1a01..0b49c2a78771d2 100644
--- a/Misc/NEWS.d/3.11.0a1.rst
+++ b/Misc/NEWS.d/3.11.0a1.rst
@@ -613,7 +613,7 @@ Rename ``types.Union`` to ``types.UnionType``.
 .. section: Core and Builtins
 
 Expose specialization stats in python via
-:func:`_opcode.get_specialization_stats`.
+:func:`!_opcode.get_specialization_stats`.
 
 ..
 
@@ -972,7 +972,7 @@ manager` protocols correspondingly.
 .. section: Core and Builtins
 
 Make sure that the line number is set when entering a comprehension scope.
-Ensures that backtraces inclusing generator expressions show the correct
+This ensures that backtraces including generator expressions show the correct
 line number.
 
 ..
@@ -1701,7 +1701,7 @@ Remove many old deprecated :mod:`unittest` features:
 .. nonce: y1kEfP
 .. section: Library
 
-Remove the deprecated ``split()`` method of :class:`_tkinter.TkappType`.
+Remove the deprecated ``split()`` method of :class:`!_tkinter.TkappType`.
 Patch by Erlend E. Aasland.
 
 ..
@@ -2000,7 +2000,7 @@ during file extraction.
 .. nonce: roUl0G
 .. section: Library
 
-:mod:`subprocess` on Solaris now also uses :func:`os.posix_spawn()` for
+:mod:`subprocess` on Solaris now also uses :func:`os.posix_spawn` for
 better performance.
 
 ..
@@ -2298,9 +2298,9 @@ Adopt *binacii.a2b_base64*'s strict mode in *base64.b64decode*.
 .. nonce: ThuDMI
 .. section: Library
 
-Fixed a bug in the :mod:`_ssl` module that was throwing :exc:`OverflowError`
-when using :meth:`_ssl._SSLSocket.write` and :meth:`_ssl._SSLSocket.read`
-for a big value of the ``len`` parameter. Patch by Pablo Galindo
+Fixed a bug in the :mod:`!_ssl` module that was throwing :exc:`OverflowError`
+when using :meth:`!_ssl._SSLSocket.write` and :meth:`!_ssl._SSLSocket.read`
+for a big value of the ``len`` parameter. Patch by Pablo Galindo.
 
 ..
 
@@ -2398,7 +2398,7 @@ class in the interactive session. Instead of :exc:`TypeError`, it should be
 .. nonce: R3IcM1
 .. section: Library
 
-Fix memory leak in :func:`_tkinter._flatten` if it is called with a sequence
+Fix memory leak in :func:`!_tkinter._flatten` if it is called with a sequence
 or set, but not list or tuple.
 
 ..
@@ -2722,7 +2722,7 @@ Importing typing.io or typing.re now prints a ``DeprecationWarning``.
 .. section: Library
 
 argparse actions store_const and append_const each receive a default value
-of None when the ``const`` kwarg is not provided. Previously, this raised a
+of ``None`` when the ``const`` kwarg is not provided. Previously, this raised a
 :exc:`TypeError`.
 
 ..
@@ -3995,7 +3995,7 @@ operator expressions.
 .. section: Documentation
 
 Document that :class:`collections.defaultdict` parameter ``default_factory``
-defaults to None and is positional-only.
+defaults to ``None`` and is positional-only.
 
 ..
 
@@ -4187,7 +4187,7 @@ Add calls of :func:`gc.collect` in tests to support PyPy.
 .. nonce: mQZdXU
 .. section: Tests
 
-Made tests relying on the :mod:`_asyncio` C extension module optional to
+Made tests relying on the :mod:`!_asyncio` C extension module optional to
 allow running on alternative Python implementations. Patch by Serhiy
 Storchaka.
 
@@ -4238,7 +4238,7 @@ harmless "malloc can't allocate region" messages spewed by test_decimal.
 .. nonce: KKsNOV
 .. section: Tests
 
-Fixed floating point precision issue in turtle tests.
+Fixed floating-point precision issue in turtle tests.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a2.rst b/Misc/NEWS.d/3.11.0a2.rst
index a6b5fe54b391c5..48cf2c1e428d87 100644
--- a/Misc/NEWS.d/3.11.0a2.rst
+++ b/Misc/NEWS.d/3.11.0a2.rst
@@ -15,7 +15,7 @@ Improve the :exc:`SyntaxError` message when using ``True``, ``None`` or
 .. section: Core and Builtins
 
 :data:`sys.stdlib_module_names` now contains the macOS-specific module
-:mod:`_scproxy`.
+:mod:`!_scproxy`.
 
 ..
 
@@ -34,7 +34,7 @@ module but frozen modules are disabled.
 .. nonce: veL4lJ
 .. section: Core and Builtins
 
-Specialize simple calls to Python functions (no starargs, keyowrd dict, or
+Specialize simple calls to Python functions (no starargs, keyword dict, or
 closure)
 
 ..
@@ -331,8 +331,8 @@ underlying SQLite API signals memory error. Patch by Erlend E. Aasland.
 .. nonce: 4MQt4r
 .. section: Library
 
-pprint.pprint() now handles underscore_numbers correctly. Previously it was
-always setting it to False.
+:func:`pprint.pprint` now handles *underscore_numbers* correctly.
+Previously it was always setting it to ``False``.
 
 ..
 
@@ -1023,7 +1023,7 @@ compile shared modules.
 .. nonce: 61gM2A
 .. section: Build
 
-:mod:`pyexpat` and :mod:`_elementtree` no longer define obsolete macros
+:mod:`pyexpat` and :mod:`!_elementtree` no longer define obsolete macros
 ``HAVE_EXPAT_CONFIG_H`` and ``USE_PYEXPAT_CAPI``. ``XML_POOR_ENTROPY`` is
 now defined in ``expat_config.h``.
 
diff --git a/Misc/NEWS.d/3.11.0a3.rst b/Misc/NEWS.d/3.11.0a3.rst
index 2842aad0e163d6..6a0ae20d1fb5ed 100644
--- a/Misc/NEWS.d/3.11.0a3.rst
+++ b/Misc/NEWS.d/3.11.0a3.rst
@@ -27,7 +27,7 @@ invalid targets. Patch by Pablo Galindo
 .. nonce: 3TmTSw
 .. section: Core and Builtins
 
-:c:func:`_PyErr_ChainStackItem` no longer normalizes ``exc_info`` (including
+:c:func:`!_PyErr_ChainStackItem` no longer normalizes ``exc_info`` (including
 setting the traceback on the exception instance) because ``exc_info`` is
 always normalized.
 
diff --git a/Misc/NEWS.d/3.11.0a4.rst b/Misc/NEWS.d/3.11.0a4.rst
index a5ce7620016cc7..64e2f39ad9db18 100644
--- a/Misc/NEWS.d/3.11.0a4.rst
+++ b/Misc/NEWS.d/3.11.0a4.rst
@@ -258,7 +258,7 @@ instruction which performs the same operation, but without the loop.
 .. nonce: ADVaPT
 .. section: Core and Builtins
 
-The code called from :c:func:`_PyErr_Display` was refactored to improve
+The code called from :c:func:`!_PyErr_Display` was refactored to improve
 error handling. It now exits immediately upon an unrecoverable error.
 
 ..
diff --git a/Misc/NEWS.d/3.11.0a5.rst b/Misc/NEWS.d/3.11.0a5.rst
index 30a462e9bfdcbf..5418d5d59dd583 100644
--- a/Misc/NEWS.d/3.11.0a5.rst
+++ b/Misc/NEWS.d/3.11.0a5.rst
@@ -486,8 +486,8 @@ Use ``dis.Positions`` in ``dis.Instruction`` instead of a regular ``tuple``.
 .. nonce: geS-aP
 .. section: Library
 
-:mod:`pdb` now gracefully handles ``help`` when :attr:`__doc__` is missing,
-for example when run with pregenerated optimized ``.pyc`` files.
+:mod:`pdb` now gracefully handles ``help`` when :attr:`~module.__doc__` is
+missing, for example when run with pregenerated optimized ``.pyc`` files.
 
 ..
 
@@ -748,7 +748,7 @@ tests to use ``support.infinite_recursion()``. Patch by Victor Stinner.
 
 Skip test_builtin PTY tests on non-ASCII characters if the readline module
 is loaded. The readline module changes input() behavior, but test_builtin is
-not intented to test the readline module. Patch by Victor Stinner.
+not intended to test the readline module. Patch by Victor Stinner.
 
 ..
 
diff --git a/Misc/NEWS.d/3.11.0a6.rst b/Misc/NEWS.d/3.11.0a6.rst
index 2fdceef7746d4e..e88142e641f040 100644
--- a/Misc/NEWS.d/3.11.0a6.rst
+++ b/Misc/NEWS.d/3.11.0a6.rst
@@ -1054,7 +1054,7 @@ Patch by Victor Stinner.
 .. nonce: ajJjkh
 .. section: Build
 
-Building Python now requires support for floating point Not-a-Number (NaN):
+Building Python now requires support for floating-point Not-a-Number (NaN):
 remove the ``Py_NO_NAN`` macro. Patch by Victor Stinner.
 
 ..
@@ -1088,7 +1088,7 @@ Patch by Kumar Aditya.
 
 Fix wasm32-emscripten test failures and platform issues. - Disable syscalls
 that are not supported or don't work, e.g.   wait, getrusage, prlimit,
-mkfifo, mknod, setres[gu]id, setgroups. - Use fd_count to cound open fds. -
+mkfifo, mknod, setres[gu]id, setgroups. - Use fd_count to count open fds. -
 Add more checks for subprocess and fork. - Add workarounds for missing
 _multiprocessing and failing socket.accept(). - Enable bzip2. - Disable
 large file support. - Disable signal.alarm.
@@ -1162,7 +1162,7 @@ Terry Jan Reedy.
 .. section: C API
 
 Python's public headers no longer import ``<stdbool.h>``, leaving code that
-embedd/extends Python free to define ``bool``, ``true`` and ``false``.
+embeds/extends Python free to define ``bool``, ``true`` and ``false``.
 
 ..
 
@@ -1182,7 +1182,7 @@ internal C API ``pycore_frame.h`` header file. Patch by Victor Stinner.
 .. section: C API
 
 Rename ``Include/buffer.h`` header file to ``Include/pybuffer.h`` to avoid
-conflits with projects having an existing ``buffer.h`` header file. Patch by
+conflicts with projects having an existing ``buffer.h`` header file. Patch by
 Victor Stinner.
 
 ..
@@ -1202,5 +1202,5 @@ API). Patch by Victor Stinner.
 .. nonce: __ZdpH
 .. section: C API
 
-Added function :c:func:`PyType_GetModuleByDef`, which allows accesss to
+Added function :c:func:`PyType_GetModuleByDef`, which allows access to
 module state when a method's defining class is not available.
diff --git a/Misc/NEWS.d/3.11.0a7.rst b/Misc/NEWS.d/3.11.0a7.rst
index f4e2ad8db678f5..eff2ea2dac13f8 100644
--- a/Misc/NEWS.d/3.11.0a7.rst
+++ b/Misc/NEWS.d/3.11.0a7.rst
@@ -224,7 +224,7 @@ Kumar Aditya.
 .. nonce: ZI05b5
 .. section: Core and Builtins
 
-Improved the performance of :meth:`list.append()` and list comprehensions by
+Improved the performance of :meth:`list.append` and list comprehensions by
 optimizing for the common case, where no resize is needed. Patch by Dennis
 Sweeney.
 
@@ -1127,7 +1127,7 @@ Raise more accurate and :pep:`249` compatible exceptions in :mod:`sqlite3`.
 * Don't overwrite :exc:`BufferError` with :exc:`ValueError` when conversion to
   BLOB fails.
 * Raise :exc:`~sqlite3.ProgrammingError` instead of :exc:`~sqlite3.Warning` if
-  user tries to :meth:`~sqlite3.Cursor.execute()` more than one SQL statement.
+  user tries to :meth:`~sqlite3.Cursor.execute` more than one SQL statement.
 * Raise :exc:`~sqlite3.ProgrammingError` instead of :exc:`ValueError` if an SQL
   query contains null characters.
 
@@ -1173,7 +1173,7 @@ implemented.
 .. section: Library
 
 Add an Barrier object in synchronization primitives of *asyncio* Lib in
-order to be consistant with Barrier from *threading* and *multiprocessing*
+order to be consistent with Barrier from *threading* and *multiprocessing*
 libs*
 
 ..
@@ -1211,7 +1211,7 @@ Update PEP URLs to :pep:`676`'s new canonical form.
 .. nonce: 4Dn48U
 .. section: Documentation
 
-Clarified the old Python versions compatiblity note of
+Clarified the old Python versions compatibility note of
 :func:`binascii.crc32` / :func:`zlib.adler32` / :func:`zlib.crc32`
 functions.
 
@@ -1401,7 +1401,7 @@ Christian's container image ``quay.io/tiran/cpython_autoconf:269``.
 .. nonce: fry4aK
 .. section: Build
 
-Building Python now requires support of IEEE 754 floating point numbers.
+Building Python now requires support of IEEE 754 floating-point numbers.
 Patch by Victor Stinner.
 
 ..
diff --git a/Misc/NEWS.d/3.11.0b1.rst b/Misc/NEWS.d/3.11.0b1.rst
index f9296679655573..87442dbbbd17f5 100644
--- a/Misc/NEWS.d/3.11.0b1.rst
+++ b/Misc/NEWS.d/3.11.0b1.rst
@@ -58,10 +58,10 @@ may have prevented Python-to-Python calls respecting PEP 523.
 .. nonce: -igcjS
 .. section: Core and Builtins
 
-Add a closure keyword-only parameter to exec(). It can only be specified
+Add a closure keyword-only parameter to :func:`exec`. It can only be specified
 when exec-ing a code object that uses free variables. When specified, it
 must be a tuple, with exactly the number of cell variables referenced by the
-code object. closure has a default value of None, and it must be None if the
+code object. closure has a default value of ``None``, and it must be ``None`` if the
 code object doesn't refer to any free variables.
 
 ..
@@ -285,7 +285,7 @@ macros.
 .. nonce: 11YXHQ
 .. section: Core and Builtins
 
-Add a new :c:func:`_PyFrame_IsEntryFrame` API function, to check if a
+Add a new :c:func:`!_PyFrame_IsEntryFrame` API function, to check if a
 :c:type:`PyFrameObject` is an entry frame. Patch by Pablo Galindo.
 
 ..
@@ -570,7 +570,7 @@ planned). Patch by Alex Waygood.
 
 ..
 
-.. gh: 78157
+.. gh-issue: 78157
 .. date: 2022-05-05-20-40-45
 .. nonce: IA_9na
 .. section: Library
@@ -664,8 +664,9 @@ for :func:`os.fcopyfile` available in macOs.
 .. nonce: l1p7CJ
 .. section: Library
 
-For @dataclass, add weakref_slot. Default is False. If True, and if
-slots=True, add a slot named "__weakref__", which will allow instances to be
+For :func:`@dataclass <dataclasses.dataclass>`, add *weakref_slot*.
+The new parameter defaults to ``False``. If true, and if
+``slots=True``, add a slot named ``"__weakref__"``, which will allow instances to be
 weakref'd. Contributed by Eric V. Smith
 
 ..
@@ -1288,7 +1289,7 @@ Deprecate the chunk module.
 
 ..
 
-.. gh: 91498
+.. gh-issue: 91498
 .. date: 2022-04-10-08-39-44
 .. nonce: 8oII92
 .. section: Library
@@ -1800,8 +1801,8 @@ The documentation now lists which members of C structs are part of the
 .. section: Documentation
 
 All docstrings in code snippets are now wrapped into :c:macro:`PyDoc_STR` to
-follow the guideline of `PEP 7's Documentation Strings paragraph
-<https://www.python.org/dev/peps/pep-0007/#documentation-strings>`_. Patch
+follow the guideline of :pep:`PEP 7's Documentation Strings paragraph
+<0007#documentation-strings>`. Patch
 by Oleg Iarygin.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a1.rst b/Misc/NEWS.d/3.12.0a1.rst
index f75a83c1d950d4..bb4696a03076c0 100644
--- a/Misc/NEWS.d/3.12.0a1.rst
+++ b/Misc/NEWS.d/3.12.0a1.rst
@@ -102,7 +102,7 @@ well as generator expressions.
 .. section: Core and Builtins
 
 Added unicode check for ``name`` attribute of ``spec`` argument passed in
-:func:`_imp.create_builtin` function.
+:func:`!_imp.create_builtin` function.
 
 ..
 
@@ -483,7 +483,7 @@ Fix case of undefined behavior in ceval.c
 .. nonce: AfCi36
 .. section: Core and Builtins
 
-Convert :mod:`_functools` to argument clinic.
+Convert :mod:`!_functools` to argument clinic.
 
 ..
 
@@ -492,7 +492,7 @@ Convert :mod:`_functools` to argument clinic.
 .. nonce: wky0Fc
 .. section: Core and Builtins
 
-Do not expose ``KeyWrapper`` in :mod:`_functools`.
+Do not expose ``KeyWrapper`` in :mod:`!_functools`.
 
 ..
 
@@ -560,7 +560,7 @@ versions prior to 3.11
 .. nonce: 9lmTCC
 .. section: Core and Builtins
 
-Remove two cases of undefined behavoir, by adding NULL checks.
+Remove two cases of undefined behavior, by adding NULL checks.
 
 ..
 
@@ -1731,7 +1731,7 @@ tracing functions implemented in C.
 .. nonce: lenv9h
 .. section: Core and Builtins
 
-:meth:`_warnings.warn_explicit` is ported to Argument Clinic.
+:meth:`!_warnings.warn_explicit` is ported to Argument Clinic.
 
 ..
 
@@ -2591,7 +2591,7 @@ Update bundled pip to 22.2.2.
 
 Fix :class:`asyncio.TaskGroup` to propagate exception when
 :exc:`asyncio.CancelledError` was replaced with another exception by a
-context manger. Patch by Kumar Aditya and Guido van Rossum.
+context manager. Patch by Kumar Aditya and Guido van Rossum.
 
 ..
 
@@ -3142,8 +3142,8 @@ test.test_codecs.EncodedFileTest`` instead.
 .. nonce: VhS1eS
 .. section: Library
 
-Made :class:`_struct.Struct` GC-tracked in order to fix a reference leak in
-the :mod:`_struct` module.
+Made :class:`!_struct.Struct` GC-tracked in order to fix a reference leak in
+the :mod:`!_struct` module.
 
 ..
 
@@ -3221,9 +3221,9 @@ Stinner.
 .. section: Library
 
 :mod:`hashlib`: Remove the pure Python implementation of
-:func:`hashlib.pbkdf2_hmac()`, deprecated in Python 3.10. Python 3.10 and
+:func:`hashlib.pbkdf2_hmac`, deprecated in Python 3.10. Python 3.10 and
 newer requires OpenSSL 1.1.1 (:pep:`644`): this OpenSSL version provides a C
-implementation of :func:`~hashlib.pbkdf2_hmac()` which is faster. Patch by
+implementation of :func:`~hashlib.pbkdf2_hmac` which is faster. Patch by
 Victor Stinner.
 
 ..
@@ -3258,7 +3258,7 @@ on the main thread
 
 Remove ``io.OpenWrapper`` and ``_pyio.OpenWrapper``, deprecated in Python
 3.10: just use :func:`open` instead. The :func:`open` (:func:`io.open`)
-function is a built-in function. Since Python 3.10, :func:`_pyio.open` is
+function is a built-in function. Since Python 3.10, :func:`!_pyio.open` is
 also a static method. Patch by Victor Stinner.
 
 ..
@@ -3561,8 +3561,8 @@ with :func:`os.pidfd_open` in non-blocking mode. Patch by Kumar Aditya.
 .. nonce: mkYl5q
 .. section: Library
 
-Implement Enum __contains__ that returns True or False to replace the
-deprecated behaviour that would sometimes raise a TypeError.
+Implement ``Enum.__contains__`` that returns ``True`` or ``False`` to replace the
+deprecated behaviour that would sometimes raise a :exc:`TypeError`.
 
 ..
 
@@ -3729,7 +3729,7 @@ In a very special case, the email package tried to append the nonexistent
 .. nonce: e6uKxj
 .. section: Library
 
-Fix :func:`ast.unparse` when ``ImportFrom.level`` is None
+Fix :func:`ast.unparse` when ``ImportFrom.level`` is ``None``
 
 ..
 
@@ -3791,7 +3791,7 @@ the :c:type:`time_t` type in C.
 .. section: Library
 
 Fixed crash resulting from calling bisect.insort() or bisect.insort_left()
-with the key argument not equal to None.
+with the key argument not equal to ``None``.
 
 ..
 
@@ -4080,7 +4080,7 @@ replacement strings containing group references by 2--3 times.
 .. section: Library
 
 Fix findtext in the xml module to only give an empty string when the text
-attribute is set to None.
+attribute is set to ``None``.
 
 ..
 
@@ -4237,8 +4237,8 @@ by :mod:`asyncio` to AIX platform only.
 .. nonce: 4dzB80
 .. section: Library
 
-Set :attr:`doctest.DocTest.lineno` to ``None`` when object does not have
-:attr:`__doc__`.
+Set :attr:`doctest.DocTest.lineno` to ``None`` when an object does not have
+:attr:`~definition.__doc__`.
 
 ..
 
@@ -4476,7 +4476,7 @@ they are deprecated. Contributed by C.A.M. Gerlach.
 .. nonce: we7AFm
 .. section: Documentation
 
-Replaced incorrectly written true/false values in documentiation. Patch by
+Replaced incorrectly written true/false values in documentation. Patch by
 Robert O'Shea
 
 ..
@@ -5610,7 +5610,7 @@ Accept os.PathLike for the argument to winsound.PlaySound
 
 Support native Windows case-insensitive path comparisons by using
 ``LCMapStringEx`` instead of :func:`str.lower` in :func:`ntpath.normcase`.
-Add ``LCMapStringEx`` to the :mod:`_winapi` module.
+Add ``LCMapStringEx`` to the :mod:`!_winapi` module.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a2.rst b/Misc/NEWS.d/3.12.0a2.rst
index f1d69d9b3e7638..bc028f30636bf7 100644
--- a/Misc/NEWS.d/3.12.0a2.rst
+++ b/Misc/NEWS.d/3.12.0a2.rst
@@ -527,7 +527,7 @@ Stinner.
 .. nonce: Ai2KDh
 .. section: Library
 
-Now :mod:`_pyio` is consistent with :mod:`_io` in raising ``ValueError``
+Now :mod:`!_pyio` is consistent with :mod:`!_io` in raising ``ValueError``
 when executing methods over closed buffers.
 
 ..
@@ -537,7 +537,7 @@ when executing methods over closed buffers.
 .. nonce: 0v8iyw
 .. section: Library
 
-Clean up refleak on failed module initialisation in :mod:`_zoneinfo`
+Clean up refleak on failed module initialisation in :mod:`!_zoneinfo`
 
 ..
 
@@ -546,7 +546,7 @@ Clean up refleak on failed module initialisation in :mod:`_zoneinfo`
 .. nonce: qc_KHr
 .. section: Library
 
-Clean up refleaks on failed module initialisation in :mod:`_pickle`
+Clean up refleaks on failed module initialisation in :mod:`!_pickle`
 
 ..
 
@@ -555,7 +555,7 @@ Clean up refleaks on failed module initialisation in :mod:`_pickle`
 .. nonce: LBl79O
 .. section: Library
 
-Clean up refleak on failed module initialisation in :mod:`_io`.
+Clean up refleak on failed module initialisation in :mod:`!_io`.
 
 ..
 
@@ -706,7 +706,7 @@ Remove modules :mod:`!asyncore` and :mod:`!asynchat`, which were deprecated by
 .. section: Library
 
 Fix handling of ``bytes`` :term:`path-like objects <path-like object>` in
-:func:`os.ismount()`.
+:func:`os.ismount`.
 
 ..
 
@@ -822,7 +822,7 @@ and to indicate when it became late-bound.
 .. nonce: 7KinCV
 .. section: Tests
 
-The Python test suite now fails wit exit code 4 if no tests ran. It should
+The Python test suite now fails with exit code 4 if no tests ran. It should
 help detecting typos in test names and test methods.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a3.rst b/Misc/NEWS.d/3.12.0a3.rst
index ce128fd5f80c77..04a2bf9fb916b7 100644
--- a/Misc/NEWS.d/3.12.0a3.rst
+++ b/Misc/NEWS.d/3.12.0a3.rst
@@ -70,7 +70,7 @@ Fix bug where compiler crashes on an if expression with an empty body block.
 .. nonce: DcKoBJ
 .. section: Core and Builtins
 
-Fix a reference bug in :func:`_imp.create_builtin()` after the creation of
+Fix a reference bug in :func:`!_imp.create_builtin` after the creation of
 the first sub-interpreter for modules ``builtins`` and ``sys``. Patch by
 Victor Stinner.
 
@@ -82,7 +82,7 @@ Victor Stinner.
 .. section: Core and Builtins
 
 Fixed a bug that was causing a buffer overflow if the tokenizer copies a
-line missing the newline caracter from a file that is as long as the
+line missing the newline character from a file that is as long as the
 available tokenizer buffer. Patch by Pablo galindo
 
 ..
@@ -221,7 +221,7 @@ returns an invalid file descriptor.
 
 Also \ escape \s in the http.server BaseHTTPRequestHandler.log_message so
 that it is technically possible to parse the line and reconstruct what the
-original data was.  Without this a \xHH is ambiguious as to if it is a hex
+original data was.  Without this a \xHH is ambiguous as to if it is a hex
 replacement we put in or the characters r"\x" came through in the original
 request line.
 
@@ -399,7 +399,7 @@ Fix refcount error when arguments are packed to tuple in Argument Clinic.
 .. nonce: 7uCiIB
 .. section: Library
 
-:meth:`pathlib.PurePath.relative_to()` now treats naked Windows drive paths
+:meth:`pathlib.PurePath.relative_to` now treats naked Windows drive paths
 as relative. This brings its behaviour in line with other parts of pathlib.
 
 ..
@@ -496,7 +496,7 @@ Created packages from zipfile and test_zipfile modules, separating
 
 Fix :attr:`~ipaddress.IPv4Address.is_private` properties in the
 :mod:`ipaddress` module. Previously non-private networks (0.0.0.0/0) would
-return True from this method; now they correctly return False.
+return ``True`` from this method; now they correctly return ``False``.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a4.rst b/Misc/NEWS.d/3.12.0a4.rst
index 82faa5ad0b2031..57fb2052764b6f 100644
--- a/Misc/NEWS.d/3.12.0a4.rst
+++ b/Misc/NEWS.d/3.12.0a4.rst
@@ -65,8 +65,8 @@ redundant.
 .. nonce: M2n6Kg
 .. section: Core and Builtins
 
-Fix :func:`int.__sizeof__` calculation to include the 1 element ob_digit
-array for 0 and False.
+Fix :func:`int.__sizeof__` calculation to include the 1-element ``ob_digit``
+array for ``0`` and ``False``.
 
 ..
 
@@ -241,7 +241,7 @@ are now always dumped, even if switched off.
 Improve ``BUILD_LIST`` opcode so that it works similarly to the
 ``BUILD_TUPLE`` opcode, by stealing references from the stack rather than
 repeatedly using stack operations to set list elements.  Implementation
-details are in a new private API :c:func:`_PyList_FromArraySteal`.
+details are in a new private API :c:func:`!_PyList_FromArraySteal`.
 
 ..
 
@@ -611,8 +611,8 @@ random.expovariate().
 .. nonce: bgtzMV
 .. section: Library
 
-A :exc:`DeprecationWarning` may be raised when :func:`os.fork()` or
-:func:`os.forkpty()` is called from multi-threaded processes.  Forking with
+A :exc:`DeprecationWarning` may be raised when :func:`os.fork` or
+:func:`os.forkpty` is called from multi-threaded processes.  Forking with
 threads is unsafe and can cause deadlocks, crashes and subtle problems. Lack
 of a warning does not indicate that the fork call was actually safe, as
 Python may not be aware of all threads.
@@ -830,7 +830,7 @@ Reduced the memory usage of :func:`urllib.parse.unquote` and
 .. section: Library
 
 ``inspect.signature`` was raising ``TypeError`` on call with mock objects.
-Now it correctly returns ``(*args, **kwargs)`` as infered signature.
+Now it correctly returns ``(*args, **kwargs)`` as inferred signature.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a5.rst b/Misc/NEWS.d/3.12.0a5.rst
index 8cf90b0e9cde46..5dc443bb55b617 100644
--- a/Misc/NEWS.d/3.12.0a5.rst
+++ b/Misc/NEWS.d/3.12.0a5.rst
@@ -287,7 +287,7 @@ a positional argument would lead to a :exc:`TypeError`.
 .. section: Library
 
 Group-related variables of ``_posixsubprocess`` module are renamed to stress
-that supplimentary group affinity is added to a fork, not replace the
+that supplementary group affinity is added to a fork, not replace the
 inherited ones. Patch by Oleg Iarygin.
 
 ..
@@ -307,7 +307,7 @@ It must not drop the ``Unpack`` part.
 .. nonce: wz4Xgc
 .. section: Library
 
-Add :func:`os.path.splitroot()`, which splits a path into a 3-item tuple
+Add :func:`os.path.splitroot`, which splits a path into a 3-item tuple
 ``(drive, root, tail)``. This new function is used by :mod:`pathlib` to
 improve the performance of path construction by up to a third.
 
@@ -506,7 +506,7 @@ inheritance.
 .. nonce: 7sQz5l
 .. section: Build
 
-Update BOLT configration not to use depreacted usage of ``--split
+Update BOLT configuration not to use deprecated usage of ``--split
 functions``. Patch by Donghee Na.
 
 ..
diff --git a/Misc/NEWS.d/3.12.0a6.rst b/Misc/NEWS.d/3.12.0a6.rst
index 05f9243eb6b1bc..bc708d163ce0e9 100644
--- a/Misc/NEWS.d/3.12.0a6.rst
+++ b/Misc/NEWS.d/3.12.0a6.rst
@@ -17,7 +17,7 @@ from the HACL* project.
 Updated the OpenSSL version used in Windows and macOS binary release builds
 to 1.1.1t to address :cve:`2023-0286`, :cve:`2022-4303`, and :cve:`2022-4303` per
 `the OpenSSL 2023-02-07 security advisory
-<https://www.openssl.org/news/secadv/20230207.txt>`_.
+<https://openssl-library.org/news/secadv/20230207.txt>`_.
 
 ..
 
@@ -453,7 +453,7 @@ E. Aasland.
 .. section: Library
 
 Change repr of :class:`collections.OrderedDict` to use regular dictionary
-formating instead of pairs of keys and values.
+formatting instead of pairs of keys and values.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0a7.rst b/Misc/NEWS.d/3.12.0a7.rst
index a859be8a047456..f48b9ce0550440 100644
--- a/Misc/NEWS.d/3.12.0a7.rst
+++ b/Misc/NEWS.d/3.12.0a7.rst
@@ -219,7 +219,7 @@ Aasland.
 .. nonce: DqNehf
 .. section: Library
 
-Pure python :func:`locale.getencoding()` will not warn deprecation.
+Pure python :func:`locale.getencoding` will not warn deprecation.
 
 ..
 
diff --git a/Misc/NEWS.d/3.12.0b1.rst b/Misc/NEWS.d/3.12.0b1.rst
index 764b80b7b7d436..7126e08a20c7fd 100644
--- a/Misc/NEWS.d/3.12.0b1.rst
+++ b/Misc/NEWS.d/3.12.0b1.rst
@@ -395,7 +395,7 @@ Fix bug in line numbers of instructions emitted for :keyword:`except*
 .. section: Core and Builtins
 
 Clarify :exc:`SyntaxWarning` with literal ``is`` comparison by specifying
-which literal is problematic, since comparisons using ``is`` with e.g. None
+which literal is problematic, since comparisons using ``is`` with e.g. ``None``
 and bool literals are idiomatic.
 
 ..
@@ -1446,7 +1446,7 @@ Adapt the :mod:`winsound` extension module to :pep:`687`.
 .. nonce: jurMzv
 .. section: Library
 
-Remove deprecation of enum ``memmber.member`` access.
+Remove deprecation of enum ``member.member`` access.
 
 ..
 
@@ -1828,7 +1828,7 @@ is relative.
 .. nonce: 511Tbh
 .. section: Library
 
-Convert private :meth:`_posixsubprocess.fork_exec` to use Argument Clinic.
+Convert private :meth:`!_posixsubprocess.fork_exec` to use Argument Clinic.
 
 ..
 
diff --git a/Misc/NEWS.d/3.13.0.rst b/Misc/NEWS.d/3.13.0.rst
new file mode 100644
index 00000000000000..b0f43d8f8ab947
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0.rst
@@ -0,0 +1,18 @@
+.. date: 2024-10-05-23-53-06
+.. gh-issue: 125008
+.. nonce: ETANpd
+.. release date: 2024-10-07
+.. section: Core and Builtins
+
+Fix :func:`tokenize.untokenize` producing invalid syntax for double braces
+preceded by certain escape characters.
+
+..
+
+.. date: 2024-10-03-22-26-39
+.. gh-issue: 124871
+.. nonce: tAMF47
+.. section: Core and Builtins
+
+Fix compiler bug (in some versions of 3.13) where an assertion fails during
+reachability analysis.
diff --git a/Misc/NEWS.d/3.13.0a1.rst b/Misc/NEWS.d/3.13.0a1.rst
index 4937f9da5ae629..c32c9a537d7b53 100644
--- a/Misc/NEWS.d/3.13.0a1.rst
+++ b/Misc/NEWS.d/3.13.0a1.rst
@@ -563,7 +563,7 @@ on deallocation.
 
 Fix :meth:`multiprocessing.synchronize.SemLock.__setstate__` to properly
 initialize :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx`. This
-fixes a regression when passing a SemLock accross nested processes.
+fixes a regression when passing a SemLock across nested processes.
 
 Rename :attr:`multiprocessing.synchronize.SemLock.is_fork_ctx` to
 :attr:`multiprocessing.synchronize.SemLock._is_fork_ctx` to avoid exposing
@@ -708,7 +708,7 @@ Fixes crash when tracing in recursive calls to Python classes.
 .. section: Core and Builtins
 
 Remove the ``_PyCFrame`` struct, moving the pointer to the current
-intepreter frame back to the threadstate, as it was for 3.10 and earlier.
+interpreter frame back to the threadstate, as it was for 3.10 and earlier.
 The ``_PyCFrame`` existed as a performance optimization for tracing. Since
 PEP 669 has been implemented, this optimization no longer applies.
 
@@ -926,7 +926,7 @@ Isolate :mod:`!_decimal` (apply :pep:`687`). Patch by Charlie Zhao.
 
 Add the exception as the third argument to ``PY_UNIND`` callbacks in
 ``sys.monitoring``. This makes the ``PY_UNWIND`` callback consistent with
-the other exception hanlding callbacks.
+the other exception handling callbacks.
 
 ..
 
@@ -935,7 +935,7 @@ the other exception hanlding callbacks.
 .. nonce: DdEwV8
 .. section: Core and Builtins
 
-Raise a ``ValueError`` when a monitoring callback funtion returns
+Raise a ``ValueError`` when a monitoring callback function returns
 ``DISABLE`` for events that cannot be disabled locally.
 
 ..
@@ -1006,7 +1006,7 @@ Add :meth:`dbm.gnu.gdbm.clear` to :mod:`dbm.gnu`. Patch By Donghee Na.
 .. section: Core and Builtins
 
 The ASYNC and AWAIT tokens are removed from the Grammar, which removes the
-posibility of making ``async`` and ``await`` soft keywords when using
+possibility of making ``async`` and ``await`` soft keywords when using
 ``feature_version<7`` in :func:`ast.parse`.
 
 ..
@@ -1028,7 +1028,7 @@ the call is not a classmethod.
 .. nonce: DdqHFg
 .. section: Core and Builtins
 
-Python no longer crashes due an infrequent race when initialzing
+Python no longer crashes due an infrequent race when initializing
 per-interpreter interned strings.  The crash would manifest when the
 interpreter was finalized.
 
@@ -1922,7 +1922,7 @@ objects
 .. nonce: RDGe8-
 .. section: Library
 
-Deprecation warning about non-integer number in :mod:`gettext` now alwais
+Deprecation warning about non-integer number in :mod:`gettext` now always
 refers to the line in the user code where gettext function or method is
 used. Previously it could refer to a line in ``gettext`` code.
 
@@ -1964,7 +1964,7 @@ debugging.
 .. nonce: LCxiau
 .. section: Library
 
-Fix :func:`termios.tcsetattr` bug that was overwritting existing errors
+Fix :func:`termios.tcsetattr` bug that was overwriting existing errors
 during parsing integers from ``term`` list.
 
 ..
@@ -2047,7 +2047,7 @@ point.
 .. nonce: fECxTj
 .. section: Library
 
-On Windows, multiprocessing ``Popen.terminate()`` now catchs
+On Windows, multiprocessing ``Popen.terminate()`` now catches
 :exc:`PermissionError` and get the process exit code. If the process is
 still running, raise again the :exc:`PermissionError`. Otherwise, the
 process terminated as expected: store its exit code. Patch by Victor
@@ -2857,7 +2857,7 @@ Seems that in some conditions, OpenSSL will return ``SSL_ERROR_SYSCALL``
 instead of ``SSL_ERROR_SSL`` when a certification verification has failed,
 but the error parameters will still contain ``ERR_LIB_SSL`` and
 ``SSL_R_CERTIFICATE_VERIFY_FAILED``. We are now detecting this situation and
-raising the appropiate ``ssl.SSLCertVerificationError``. Patch by Pablo
+raising the appropriate ``ssl.SSLCertVerificationError``. Patch by Pablo
 Galindo
 
 ..
@@ -2888,9 +2888,9 @@ documented and were not intended to be used externally.
 .. nonce: vMbmj_
 .. section: Library
 
-:data:`opcode.ENABLE_SPECIALIZATION` (which was added in 3.12 but never
+:data:`!opcode.ENABLE_SPECIALIZATION` (which was added in 3.12 but never
 documented or intended for external usage) is moved to
-:data:`_opcode.ENABLE_SPECIALIZATION` where tests can access it.
+:data:`!_opcode.ENABLE_SPECIALIZATION` where tests can access it.
 
 ..
 
@@ -2979,7 +2979,7 @@ method. Patch by James Cave.
 .. section: Library
 
 Fix overflow on 32-bit systems with :mod:`asyncio` :func:`os.sendfile`
-implemention.
+implementation.
 
 ..
 
@@ -3053,7 +3053,7 @@ Donghee Na.
 .. nonce: U9nD_B
 .. section: Library
 
-Optimize :meth:`_PollLikeSelector.select` for many iteration case.
+Optimize :meth:`!_PollLikeSelector.select` for many iteration case.
 
 ..
 
@@ -3173,7 +3173,7 @@ Disable tab completion in multiline mode of :mod:`pdb`
 .. nonce: pYSwMj
 .. section: Library
 
-Expose opcode metadata through :mod:`_opcode`.
+Expose opcode metadata through :mod:`!_opcode`.
 
 ..
 
@@ -3251,7 +3251,7 @@ Eliseev.
 .. nonce: NN35-U
 .. section: Library
 
-Optimize ``(?!)`` (pattern which alwais fails) in regular expressions.
+Optimize ``(?!)`` (pattern which always fails) in regular expressions.
 
 ..
 
@@ -3436,7 +3436,8 @@ added support for this decorator. Patch by Alex Waygood.
 .. nonce: C1ahtk
 .. section: Library
 
-Make pydoc.doc catch bad module ImportError when output stream is not None.
+Make :func:`pydoc.doc` catch bad module :exc:`ImportError`
+when output stream is not ``None``.
 
 ..
 
@@ -3494,7 +3495,7 @@ star imports.
 .. nonce: TJEUkd
 .. section: Library
 
-Zipapp will now skip over apending an archive to itself.
+Zipapp will now skip over appending an archive to itself.
 
 ..
 
@@ -3734,7 +3735,7 @@ overwritten.
 .. nonce: _sZilh
 .. section: Library
 
-Fix bugs in :mod:`_ctypes` where exceptions could end up being overwritten.
+Fix bugs in :mod:`!_ctypes` where exceptions could end up being overwritten.
 
 ..
 
@@ -4563,7 +4564,7 @@ Deprecate passing any arguments to :func:`threading.RLock`.
 .. nonce: o5Zb0t
 .. section: Library
 
-Refactored ``zipfile._strip_extra`` to use higher level abstactions for
+Refactored ``zipfile._strip_extra`` to use higher level abstractions for
 extras instead of a heavy-state loop.
 
 ..
@@ -5013,7 +5014,7 @@ by Victor Stinner.
 
 Fix test_timeout() of test_concurrent_futures.test_wait. Remove the future
 which may or may not complete depending if it takes longer than the timeout
-ot not. Keep the second future which does not complete before wait()
+or not. Keep the second future which does not complete before wait()
 timeout. Patch by Victor Stinner.
 
 ..
@@ -5103,7 +5104,7 @@ Victor Stinner.
 
 regrtest: Add ``--fast-ci`` and ``--slow-ci`` options. ``--fast-ci`` uses a
 default timeout of 10 minutes and ``-u all,-cpu`` (skip slowest tests).
-``--slow-ci`` uses a default timeout of 20 minues and ``-u all`` (run all
+``--slow-ci`` uses a default timeout of 20 minutes and ``-u all`` (run all
 tests). Patch by Victor Stinner.
 
 ..
@@ -5147,7 +5148,7 @@ frame did not save the PC`` is found. Patch by Victor Stinner.
 .. nonce: qxI4OG
 .. section: Tests
 
-libregrtest now calls :func:`random.seed()` before running each test file
+libregrtest now calls :func:`random.seed` before running each test file
 when ``-r/--randomize`` command line option is used. Moreover, it's also
 called in worker processes.  It should help to make tests more
 deterministic. Previously, it was only called once in the main process
@@ -5231,7 +5232,7 @@ and ``sysctl net.inet.udp.blackhole=1``).  Patch by Victor Stinner.
 
 Skip ``test_gdb`` if gdb is unable to retrieve Python frame objects: if a
 frame is ``<optimized out>``. When Python is built with "clang -Og", gdb can
-fail to retrive the *frame* parameter of ``_PyEval_EvalFrameDefault()``. In
+fail to retrieve the *frame* parameter of ``_PyEval_EvalFrameDefault()``. In
 this case, tests like ``py_bt()`` are likely to fail. Without getting access
 to Python frames, ``python-gdb.py`` is mostly clueless on retrieving the
 Python traceback. Moreover, ``test_gdb`` is no longer skipped on macOS if
diff --git a/Misc/NEWS.d/3.13.0a2.rst b/Misc/NEWS.d/3.13.0a2.rst
index e5841e14c02efb..a1a2d8a42ec03b 100644
--- a/Misc/NEWS.d/3.13.0a2.rst
+++ b/Misc/NEWS.d/3.13.0a2.rst
@@ -228,7 +228,7 @@ cross-interpreter API.  Patch by Anthony Shaw.
 .. nonce: ageUWQ
 .. section: Core and Builtins
 
-Add support for sharing of True and False between interpreters using the
+Add support for sharing of ``True`` and ``False`` between interpreters using the
 cross-interpreter API.  Patch by Anthony Shaw.
 
 ..
@@ -632,8 +632,8 @@ Add extra argument validation for ``alias`` command in :mod:`pdb`
 .. nonce: FWqZIU
 .. section: Library
 
-:mod:`time`: Make :func:`time.clock_gettime()` and
-:func:`time.clock_gettime_ns()` functions up to 2x faster by faster calling
+:mod:`time`: Make :func:`time.clock_gettime` and
+:func:`time.clock_gettime_ns` functions up to 2x faster by faster calling
 convention. Patch by Victor Stinner.
 
 ..
@@ -674,7 +674,7 @@ Unix socket when the server is closed.
 .. nonce: Bc8LvA
 .. section: Library
 
-Added :func:`io.text_encoding()`, :data:`io.DEFAULT_BUFFER_SIZE`, and
+Added :func:`io.text_encoding`, :data:`io.DEFAULT_BUFFER_SIZE`, and
 :class:`io.IncrementalNewlineDecoder` to ``io.__all__``.
 
 ..
@@ -736,7 +736,7 @@ which allows to format :exc:`ExceptionGroup` instances.
 .. nonce: 5ePgFl
 .. section: Library
 
-Another attempt at fixing :func:`asyncio.Server.wait_closed()`. It now
+Another attempt at fixing :func:`asyncio.Server.wait_closed`. It now
 blocks until both conditions are true: the server is closed, *and* there are
 no more active connections. (This means that in some cases where in 3.12.0
 this function would *incorrectly* have returned immediately, it will now
@@ -777,7 +777,7 @@ Add error checking during :mod:`!_socket` module init.
 .. nonce: urFYtn
 .. section: Library
 
-Fix :mod:`_blake2` not checking for errors when initializing.
+Fix :mod:`!_blake2` not checking for errors when initializing.
 
 ..
 
@@ -880,7 +880,7 @@ Make :mod:`pdb` enter post-mortem mode even for :exc:`SyntaxError`
 .. nonce: _M-cQC
 .. section: Library
 
-Set ``f_trace_lines = True`` on all frames upon :func:`pdb.set_trace()`
+Set ``f_trace_lines = True`` on all frames upon :func:`pdb.set_trace`
 
 ..
 
@@ -974,7 +974,7 @@ pattern.
 .. nonce: 6ah-aw
 .. section: Library
 
-Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which retuns the
+Add the :attr:`ipaddress.IPv4Address.ipv6_mapped` property, which returns the
 IPv4-mapped IPv6 address.
 
 ..
@@ -1354,8 +1354,8 @@ crash encountered after the first :meth:`tkinter.Tk` instance is destroyed.
 .. section: IDLE
 
 Add docstrings to the IDLE debugger module. Fix two bugs: initialize
-Idb.botframe (should be in Bdb); in Idb.in_rpc_code, check whether
-prev_frame is None before trying to use it. Greatly expand test_debugger.
+``Idb.botframe`` (should be in Bdb); in ``Idb.in_rpc_code``, check whether
+``prev_frame`` is ``None`` before trying to use it. Greatly expand test_debugger.
 
 ..
 
diff --git a/Misc/NEWS.d/3.13.0a3.rst b/Misc/NEWS.d/3.13.0a3.rst
index 218ba609bd80c0..0f8dee261c6589 100644
--- a/Misc/NEWS.d/3.13.0a3.rst
+++ b/Misc/NEWS.d/3.13.0a3.rst
@@ -269,7 +269,7 @@ Correctly compute end column offsets for multiline tokens in the
 .. nonce: 4ADN7i
 .. section: Core and Builtins
 
-Fix None.__ne__(None) returning NotImplemented instead of False
+Fix ``None.__ne__(None)`` returning ``NotImplemented`` instead of ``False``.
 
 ..
 
@@ -449,8 +449,8 @@ well-formed for surrogateescape encoding. Patch by Sidney Markowitz.
 .. nonce: N8E1zw
 .. section: Core and Builtins
 
-Use the object's actual class name in :meth:`_io.FileIO.__repr__`,
-:meth:`_io._WindowsConsoleIO` and :meth:`_io.TextIOWrapper.__repr__`, to
+Use the object's actual class name in :meth:`!_io.FileIO.__repr__`,
+:meth:`!_io._WindowsConsoleIO` and :meth:`!_io.TextIOWrapper.__repr__`, to
 make these methods subclass friendly.
 
 ..
@@ -555,7 +555,7 @@ Added :data:`mmap.MAP_NORESERVE`, :data:`mmap.MAP_NOEXTEND`,
 .. nonce: kXoCy0
 .. section: Library
 
-:func:`asyncio.TaskGroup()` and :func:`asyncio.timeout()` context managers
+:func:`asyncio.TaskGroup` and :func:`asyncio.timeout` context managers
 now handle :exc:`~asyncio.CancelledError` subclasses as well as exact
 :exc:`!CancelledError`.
 
@@ -607,9 +607,9 @@ with the documentation)
 .. nonce: xN2LuL
 .. section: Library
 
-:func:`asyncio.Condition.wait()` now re-raises the same
+:func:`asyncio.Condition.wait` now re-raises the same
 :exc:`CancelledError` instance that may have caused it to be interrupted.
-Fixed race condition in :func:`asyncio.Semaphore.aquire` when interrupted
+Fixed race condition in :func:`asyncio.Semaphore.acquire` when interrupted
 with a :exc:`CancelledError`.
 
 ..
@@ -863,7 +863,7 @@ Fixed tarfile list() method to show file type.
 .. nonce: jLWGlr
 .. section: Library
 
-:meth:`asyncio.futures.Future.set_exception()` now transforms
+:meth:`asyncio.futures.Future.set_exception` now transforms
 :exc:`StopIteration` into :exc:`RuntimeError` instead of hanging or other
 misbehavior. Patch contributed by Jamie Phan.
 
@@ -928,7 +928,7 @@ on Windows.
 .. section: Library
 
 Fix :func:`shutil.copymode` and :func:`shutil.copystat` on Windows.
-Previously they worked differenly if *dst* is a symbolic link: they modified
+Previously they worked differently if *dst* is a symbolic link: they modified
 the permission bits of *dst* itself rather than the file it points to if
 *follow_symlinks* is true or *src* is not a symbolic link, and did not
 modify the permission bits if *follow_symlinks* is false and *src* is a
@@ -1550,7 +1550,7 @@ addresses are encountered instead of potentially inaccurate values. Add
 optional *strict* parameter to these two functions: use ``strict=False`` to
 get the old behavior, accept malformed inputs. ``getattr(email.utils,
 'supports_strict_parsing', False)`` can be use to check if the *strict*
-paramater is available. Patch by Thomas Dwyer and Victor Stinner to improve
+parameter is available. Patch by Thomas Dwyer and Victor Stinner to improve
 the :cve:`2023-27043` fix.
 
 ..
@@ -1615,7 +1615,7 @@ method of :class:`itertools.pairwise`.
 .. section: Library
 
 Small (10 - 20%) and trivial performance improvement of
-:func:`urrlib.request.getproxies_environment`, typically useful when there
+:func:`urllib.request.getproxies_environment`, typically useful when there
 are many environment variables to go over.
 
 ..
@@ -1805,7 +1805,7 @@ size.
 .. nonce: xPOBBY
 .. section: Library
 
-:func:`warnings.filterwarnings()` and :func:`warnings.simplefilter()` now
+:func:`warnings.filterwarnings` and :func:`warnings.simplefilter` now
 raise appropriate exceptions instead of ``AssertionError``. Patch
 contributed by Rémi Lapeyre.
 
diff --git a/Misc/NEWS.d/3.13.0a4.rst b/Misc/NEWS.d/3.13.0a4.rst
index 39af0534cf8fb5..1b971113173e0a 100644
--- a/Misc/NEWS.d/3.13.0a4.rst
+++ b/Misc/NEWS.d/3.13.0a4.rst
@@ -336,7 +336,7 @@ for decorated functions.
 .. nonce: RzxNYT
 .. section: Library
 
-Fix several :func:`format()` bugs when using the C implementation of
+Fix several :func:`format` bugs when using the C implementation of
 :class:`~decimal.Decimal`: * memory leak in some rare cases when using the
 ``z`` format option (coerce negative 0) * incorrect output when applying the
 ``z`` format option to type ``F`` (fixed-point with capital ``NAN`` /
@@ -1181,7 +1181,7 @@ configure.ac.
 .. nonce: XcEXEZ
 .. section: Build
 
-configure and Makefile were refactored to accomodate framework builds on
+configure and Makefile were refactored to accommodate framework builds on
 Apple platforms other than macOS.
 
 ..
@@ -1283,7 +1283,7 @@ Update macOS installer to use OpenSSL 3.0.13.
 .. nonce: FrQOQ0
 .. section: macOS
 
-Add Mach-O linkage support for :func:`platform.architecture()`.
+Add Mach-O linkage support for :func:`platform.architecture`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.13.0a5.rst b/Misc/NEWS.d/3.13.0a5.rst
index 55dee59827ad8f..d56b1542b01823 100644
--- a/Misc/NEWS.d/3.13.0a5.rst
+++ b/Misc/NEWS.d/3.13.0a5.rst
@@ -446,7 +446,7 @@ regardless of *lineterminator* value.
 .. section: Library
 
 Restore support of space delimiter with ``skipinitialspace=True`` in
-:mod:`csv`. :func:`csv.writer()` now quotes empty fields if delimiter is a
+:mod:`csv`. :func:`csv.writer` now quotes empty fields if delimiter is a
 space and skipinitialspace is true and raises exception if quoting is not
 possible.
 
@@ -541,7 +541,7 @@ descriptors in :meth:`inspect.Signature.from_callable`.
 .. nonce: sGMKr0
 .. section: Library
 
-Isolate :mod:`_lsprof` (apply :pep:`687`).
+Isolate :mod:`!_lsprof` (apply :pep:`687`).
 
 ..
 
@@ -606,10 +606,10 @@ is complete.
 .. nonce: SQ998l
 .. section: Library
 
-:func:`posixpath.commonpath()` now raises a :exc:`ValueError` exception when
+:func:`posixpath.commonpath` now raises a :exc:`ValueError` exception when
 passed an empty iterable. Previously, :exc:`IndexError` was raised.
 
-:func:`posixpath.commonpath()` now raises a :exc:`TypeError` exception when
+:func:`posixpath.commonpath` now raises a :exc:`TypeError` exception when
 passed ``None``. Previously, :exc:`ValueError` was raised.
 
 ..
@@ -773,8 +773,8 @@ combination with unicode encoding.
 .. section: Library
 
 Fix :func:`io.BufferedReader.tell`, :func:`io.BufferedReader.seek`,
-:func:`_pyio.BufferedReader.tell`, :func:`io.BufferedRandom.tell`,
-:func:`io.BufferedRandom.seek` and :func:`_pyio.BufferedRandom.tell` being
+:func:`!_pyio.BufferedReader.tell`, :func:`io.BufferedRandom.tell`,
+:func:`io.BufferedRandom.seek` and :func:`!_pyio.BufferedRandom.tell` being
 able to return negative offsets.
 
 ..
@@ -823,7 +823,7 @@ Add missing call to localization function in :mod:`argparse`.
 .. nonce: Me7fJe
 .. section: Library
 
-Fix :meth:`multiprocessing.connection.Listener.accept()` to accept empty
+Fix :meth:`multiprocessing.connection.Listener.accept` to accept empty
 bytes as authkey. Not accepting empty bytes as key causes it to hang
 indefinitely.
 
@@ -962,7 +962,7 @@ On Windows, commas passed in arguments to ``Tools\buildbot\test.bat`` and
 .. nonce: -dlzfI
 .. section: Tests
 
-Fix translation of exception hander targets by
+Fix translation of exception handler targets by
 ``_testinternalcapi.optimize_cfg``.
 
 ..
diff --git a/Misc/NEWS.d/3.13.0a6.rst b/Misc/NEWS.d/3.13.0a6.rst
index 06807b396ed5da..2740b4f0d967ba 100644
--- a/Misc/NEWS.d/3.13.0a6.rst
+++ b/Misc/NEWS.d/3.13.0a6.rst
@@ -1,25 +1,7 @@
-.. date: 2024-04-08-20-26-15
-.. gh-issue: 117648
-.. nonce: NzVEa7
-.. release date: 2024-04-09
-.. section: Core and Builtins
-
-Improve performance of :func:`os.path.join` and :func:`os.path.expanduser`.
-
-..
-
-.. date: 2024-04-06-16-42-34
-.. gh-issue: 117584
-.. nonce: hqk9Hn
-.. section: Core and Builtins
-
-Raise :exc:`TypeError` for non-paths in :func:`posixpath.relpath()`.
-
-..
-
 .. date: 2024-04-04-13-42-59
 .. gh-issue: 117494
 .. nonce: GPQH64
+.. release date: 2024-04-09
 .. section: Core and Builtins
 
 Refactored the instruction sequence data structure out of compile.c into
@@ -97,33 +79,6 @@ Grigoryev Semyon
 
 ..
 
-.. date: 2024-03-29-21-43-19
-.. gh-issue: 117381
-.. nonce: fT0JFM
-.. section: Core and Builtins
-
-Fix error message for :func:`ntpath.commonpath`.
-
-..
-
-.. date: 2024-03-29-15-04-13
-.. gh-issue: 117349
-.. nonce: OB9kQQ
-.. section: Core and Builtins
-
-Optimise several functions in :mod:`os.path`.
-
-..
-
-.. date: 2024-03-28-19-13-20
-.. gh-issue: 117335
-.. nonce: d6uKJu
-.. section: Core and Builtins
-
-Raise TypeError for non-sequences for :func:`ntpath.commonpath`.
-
-..
-
 .. date: 2024-03-26-17-22-38
 .. gh-issue: 117266
 .. nonce: Kwh79O
@@ -170,16 +125,6 @@ up with growing heaps.
 
 ..
 
-.. date: 2024-03-21-09-57-57
-.. gh-issue: 117114
-.. nonce: Qu-p55
-.. section: Core and Builtins
-
-Make :func:`os.path.isdevdrive` available on all platforms. For those that
-do not offer Dev Drives, it will always return ``False``.
-
-..
-
 .. date: 2024-03-13-16-55-25
 .. gh-issue: 116735
 .. nonce: o3w6y8
@@ -305,6 +250,24 @@ operator. Patch by Pablo Galindo
 
 ..
 
+.. date: 2024-04-08-20-26-15
+.. gh-issue: 117648
+.. nonce: NzVEa7
+.. section: Library
+
+Improve performance of :func:`os.path.join` and :func:`os.path.expanduser`.
+
+..
+
+.. date: 2024-04-06-16-42-34
+.. gh-issue: 117584
+.. nonce: hqk9Hn
+.. section: Library
+
+Raise :exc:`TypeError` for non-paths in :func:`posixpath.relpath`.
+
+..
+
 .. date: 2024-04-03-18-36-53
 .. gh-issue: 117467
 .. nonce: l6rWlj
@@ -336,6 +299,15 @@ which can happen on Linux >= 2.6.36 with glibc < 2.27.
 
 ..
 
+.. date: 2024-03-29-21-43-19
+.. gh-issue: 117381
+.. nonce: fT0JFM
+.. section: Library
+
+Fix error message for :func:`ntpath.commonpath`.
+
+..
+
 .. date: 2024-03-29-15-58-01
 .. gh-issue: 117337
 .. nonce: 7w3Qwp
@@ -347,6 +319,15 @@ argument instead.
 
 ..
 
+.. date: 2024-03-29-15-04-13
+.. gh-issue: 117349
+.. nonce: OB9kQQ
+.. section: Library
+
+Optimise several functions in :mod:`os.path`.
+
+..
+
 .. date: 2024-03-29-12-07-26
 .. gh-issue: 117348
 .. nonce: WjCYvK
@@ -357,6 +338,15 @@ complexity and improve comprehensibility.
 
 ..
 
+.. date: 2024-03-28-19-13-20
+.. gh-issue: 117335
+.. nonce: d6uKJu
+.. section: Library
+
+Raise TypeError for non-sequences for :func:`ntpath.commonpath`.
+
+..
+
 .. date: 2024-03-28-17-55-22
 .. gh-issue: 66449
 .. nonce: 4jhuEV
@@ -470,6 +460,16 @@ backslashes on Windows.
 
 ..
 
+.. date: 2024-03-21-09-57-57
+.. gh-issue: 117114
+.. nonce: Qu-p55
+.. section: Library
+
+Make :func:`os.path.isdevdrive` available on all platforms. For those that
+do not offer Dev Drives, it will always return ``False``.
+
+..
+
 .. date: 2024-03-21-07-27-36
 .. gh-issue: 117110
 .. nonce: 9K1InX
@@ -550,7 +550,7 @@ or DuplicateOptionError.
 .. nonce: PBiRQB
 .. section: Library
 
-:class:`_io.WindowsConsoleIO` now emit a warning if a boolean value is
+:class:`!_io.WindowsConsoleIO` now emit a warning if a boolean value is
 passed as a filedescriptor argument.
 
 ..
@@ -582,7 +582,7 @@ in other tests (like importlib.resources).
 .. nonce: LV16SL
 .. section: Library
 
-On Windows, :func:`time.time()` now uses the
+On Windows, :func:`time.time` now uses the
 ``GetSystemTimePreciseAsFileTime()`` clock to have a resolution better than
 1 us, instead of the ``GetSystemTimeAsFileTime()`` clock which has a
 resolution of 15.6 ms. Patch by Victor Stinner.
@@ -642,7 +642,7 @@ Also in the corresponding :class:`ipaddress.IPv4Network` and
 .. nonce: OToJnG
 .. section: Library
 
-In :mod:`encodings.idna`, any capitalization of the the ACE prefix
+In :mod:`encodings.idna`, any capitalization of the ACE prefix
 (``xn--``) is now acceptable. Patch by Pepijn de Vos and Zackery Spytz.
 
 ..
@@ -673,14 +673,14 @@ fused multiply-add function. Patch by Mark Dickinson and Victor Stinner.
 .. section: Library
 
 The :mod:`importlib.resources` functions
-:func:`~importlib.resources.is_resource()`,
-:func:`~importlib.resources.open_binary()`,
-:func:`~importlib.resources.open_text()`,
-:func:`~importlib.resources.path()`,
-:func:`~importlib.resources.read_binary()`, and
-:func:`~importlib.resources.read_text()` are un-deprecated, and support
+:func:`~importlib.resources.is_resource`,
+:func:`~importlib.resources.open_binary`,
+:func:`~importlib.resources.open_text`,
+:func:`~importlib.resources.path`,
+:func:`~importlib.resources.read_binary`, and
+:func:`~importlib.resources.read_text` are un-deprecated, and support
 subdirectories via multiple positional arguments. The
-:func:`~importlib.resources.contents()` function also allows subdirectories,
+:func:`~importlib.resources.contents` function also allows subdirectories,
 but remains deprecated.
 
 ..
@@ -913,7 +913,7 @@ call.
 .. nonce: IMLi6K
 .. section: Documentation
 
-Remove compatibilty references to Emscripten.
+Remove compatibility references to Emscripten.
 
 ..
 
@@ -1061,7 +1061,7 @@ when available. Contributed by vxiiduu.
 .. nonce: Bwfmp7
 .. section: Windows
 
-On Windows, :func:`time.monotonic()` now uses the
+On Windows, :func:`time.monotonic` now uses the
 ``QueryPerformanceCounter()`` clock to have a resolution better than 1 us,
 instead of the ``GetTickCount64()`` clock which has a resolution of 15.6 ms.
 Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/3.13.0b1.rst b/Misc/NEWS.d/3.13.0b1.rst
index 8d49ff06efd07b..97731276679ba6 100644
--- a/Misc/NEWS.d/3.13.0b1.rst
+++ b/Misc/NEWS.d/3.13.0b1.rst
@@ -295,15 +295,6 @@ Improve :exc:`SyntaxError` message for empty type param brackets.
 
 ..
 
-.. date: 2024-04-19-08-50-48
-.. gh-issue: 102511
-.. nonce: qDEB66
-.. section: Core and Builtins
-
-Speed up :func:`os.path.splitroot` with a native implementation.
-
-..
-
 .. date: 2024-04-18-03-49-41
 .. gh-issue: 117958
 .. nonce: -EsfUs
@@ -363,16 +354,6 @@ asend().throw()
 
 ..
 
-.. date: 2024-04-13-18-59-25
-.. gh-issue: 115874
-.. nonce: c3xG-E
-.. section: Core and Builtins
-
-Fixed a possible segfault during garbage collection of
-``_asyncio.FutureIter`` objects
-
-..
-
 .. date: 2024-04-13-16-55-53
 .. gh-issue: 117536
 .. nonce: xkVbfv
@@ -449,33 +430,6 @@ as such regardless of whether they are in extension modules or not.
 
 ..
 
-.. date: 2024-04-08-19-30-38
-.. gh-issue: 117641
-.. nonce: oaBGSJ
-.. section: Core and Builtins
-
-Speedup :func:`os.path.commonpath` on Unix.
-
-..
-
-.. date: 2024-04-08-14-33-38
-.. gh-issue: 117636
-.. nonce: exnRKd
-.. section: Core and Builtins
-
-Speedup :func:`os.path.join`.
-
-..
-
-.. date: 2024-04-07-18-42-09
-.. gh-issue: 117607
-.. nonce: C978BD
-.. section: Core and Builtins
-
-Speedup :func:`os.path.relpath`.
-
-..
-
 .. date: 2024-03-30-00-37-53
 .. gh-issue: 117385
 .. nonce: h0OJti
@@ -702,7 +656,7 @@ by :pep:`738`.
 .. section: Library
 
 Allow to specify the signature of custom callable instances of extension
-type by the :attr:`__text_signature__` attribute. Specify signatures of
+type by the ``__text_signature__`` attribute. Specify signatures of
 :class:`operator.attrgetter`, :class:`operator.itemgetter`, and
 :class:`operator.methodcaller` instances.
 
@@ -723,10 +677,10 @@ padding is not detected when no padding is necessary.
 .. nonce: 5N2Xcy
 .. section: Library
 
-Add the :class:`!PhotoImage` methods :meth:`~tkinter.PhotoImage.read` to
-read an image from a file and :meth:`~tkinter.PhotoImage.data` to get the
+Add the :class:`!PhotoImage` methods :meth:`!read` to
+read an image from a file and :meth:`!data` to get the
 image data. Add *background* and *grayscale* parameters to
-:class:`!PhotoImage` method :meth:`~tkinter.PhotoImage.write`.
+:class:`!PhotoImage` method :meth:`!write`.
 
 ..
 
@@ -738,8 +692,8 @@ image data. Add *background* and *grayscale* parameters to
 Add the :class:`!PhotoImage` method :meth:`!copy_replace` to copy a region
 from one image to other image, possibly with pixel zooming and/or
 subsampling. Add *from_coords* parameter to :class:`!PhotoImage` methods
-:meth:`!copy()`, :meth:`!zoom()` and :meth:`!subsample()`. Add *zoom* and
-*subsample* parameters to :class:`!PhotoImage` method :meth:`!copy()`.
+:meth:`!copy`, :meth:`!zoom` and :meth:`!subsample`. Add *zoom* and
+*subsample* parameters to :class:`!PhotoImage` method :meth:`!copy`.
 
 ..
 
@@ -835,6 +789,16 @@ big or offset too far.
 
 ..
 
+.. date: 2024-04-19-08-50-48
+.. gh-issue: 102511
+.. nonce: qDEB66
+.. section: Library
+
+Fix :func:`os.path.normpath` for UNC paths on Windows.
+Speed up :func:`os.path.splitroot` with a native implementation.
+
+..
+
 .. date: 2024-04-18-00-35-11
 .. gh-issue: 117535
 .. nonce: 0m6SIM
@@ -881,7 +845,7 @@ is used to bind indexed, nameless placeholders. See also :gh:`100668`.
 .. nonce: RstWg-
 .. section: Library
 
-Fix TypeError in :func:`email.Message.get_payload` when the charset is
+Fix TypeError in :func:`email.message.Message.get_payload` when the charset is
 :rfc:`2231` encoded.
 
 ..
@@ -909,6 +873,16 @@ Alex Waygood.
 
 ..
 
+.. date: 2024-04-13-18-59-25
+.. gh-issue: 115874
+.. nonce: c3xG-E
+.. section: Library
+
+Fixed a possible segfault during garbage collection of
+``_asyncio.FutureIter`` objects. Patch by Savannah Ostrowski.
+
+..
+
 .. date: 2024-04-13-01-45-15
 .. gh-issue: 115060
 .. nonce: IxoM03
@@ -979,7 +953,7 @@ Speed up :meth:`pathlib.Path.walk` by working with strings internally.
 .. nonce: oxIUEI
 .. section: Library
 
-Change the new multi-separator support in :meth:`asyncio.Stream.readuntil`
+Change the new multi-separator support in :meth:`asyncio.StreamReader.readuntil`
 to only accept tuples of separators rather than arbitrary iterables.
 
 ..
@@ -1004,6 +978,15 @@ dataclasses.
 
 ..
 
+.. date: 2024-04-08-19-30-38
+.. gh-issue: 117641
+.. nonce: oaBGSJ
+.. section: Library
+
+Speedup :func:`os.path.commonpath` on Unix.
+
+..
+
 .. date: 2024-04-08-19-12-26
 .. gh-issue: 117663
 .. nonce: CPfc_p
@@ -1014,6 +997,15 @@ but only one is the member value.
 
 ..
 
+.. date: 2024-04-08-14-33-38
+.. gh-issue: 117636
+.. nonce: exnRKd
+.. section: Library
+
+Speedup :func:`os.path.join`.
+
+..
+
 .. date: 2024-04-08-03-23-22
 .. gh-issue: 117618
 .. nonce: -4DCUw
@@ -1037,6 +1029,15 @@ The old constants are preserved for backwards compatibility.
 
 ..
 
+.. date: 2024-04-07-18-42-09
+.. gh-issue: 117607
+.. nonce: C978BD
+.. section: Library
+
+Speedup :func:`os.path.relpath`.
+
+..
+
 .. date: 2024-04-06-20-31-09
 .. gh-issue: 117586
 .. nonce: UgWdRK
@@ -1212,7 +1213,7 @@ changed from ``'r'`` to ``'rb'``.
 .. nonce: eeS6w7
 .. section: Library
 
-Fix :func:`inspect.signature()` to correctly handle parameter defaults on
+Fix :func:`inspect.signature` to correctly handle parameter defaults on
 methods in extension modules that use names defined in the module namespace.
 
 ..
@@ -1259,7 +1260,7 @@ Support opcode events in :mod:`bdb`
 .. nonce: YoI8TV
 .. section: Library
 
-:mod:`ncurses`: fixed a crash that could occur on macOS 13 or earlier when
+:mod:`!ncurses`: fixed a crash that could occur on macOS 13 or earlier when
 Python was built with Apple Xcode 15's SDK.
 
 ..
@@ -1314,7 +1315,7 @@ Hamdan.
 .. section: Library
 
 Adjust ``logging.LogRecord`` to use ``time.time_ns()`` and fix minor bug
-related to floating point math.
+related to floating-point math.
 
 ..
 
@@ -1346,13 +1347,13 @@ urllib.
 .. nonce: du4UKW
 .. section: Library
 
-Callbacks registered in the :mod:`tkinter` module now take arguments as
-various Python objects (``int``, ``float``, ``bytes``, ``tuple``), not just
-``str``. To restore the previous behavior set :mod:`!tkinter` module global
-:data:`~tkinter.wantobject` to ``1`` before creating the
-:class:`~tkinter.Tk` object or call the :meth:`~tkinter.Tk.wantobject`
-method of the :class:`!Tk` object with argument ``1``. Calling it with
-argument ``2`` restores the current default behavior.
+Setting the :mod:`!tkinter` module global :data:`!wantobjects` to ``2``
+before creating the :class:`~tkinter.Tk` object or call the
+:meth:`!wantobjects` method of the :class:`!Tk` object with argument
+``2`` makes now arguments to callbacks registered in the :mod:`tkinter` module
+to be passed as various Python objects (``int``, ``float``, ``bytes``, ``tuple``),
+depending on their internal representation in Tcl, instead of always ``str``.
+:data:`!tkinter.wantobjects` is now set to ``2`` by default.
 
 ..
 
diff --git a/Misc/NEWS.d/3.13.0b2.rst b/Misc/NEWS.d/3.13.0b2.rst
new file mode 100644
index 00000000000000..d5559fbaa334ac
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0b2.rst
@@ -0,0 +1,806 @@
+.. date: 2024-05-08-21-59-38
+.. gh-issue: 118773
+.. nonce: 7dFRJY
+.. release date: 2024-06-05
+.. section: Security
+
+Fixes creation of ACLs in :func:`os.mkdir` on Windows to work correctly on
+non-English machines.
+
+..
+
+.. date: 2024-05-01-20-57-09
+.. gh-issue: 118486
+.. nonce: K44KJG
+.. section: Security
+
+:func:`os.mkdir` on Windows now accepts *mode* of ``0o700`` to restrict the
+new directory to the current user. This fixes :cve:`2024-4030` affecting
+:func:`tempfile.mkdtemp` in scenarios where the base temporary directory is
+more permissive than the default.
+
+..
+
+.. date: 2024-06-03-13-25-04
+.. gh-issue: 119724
+.. nonce: EH1dkA
+.. section: Core and Builtins
+
+Reverted improvements to error messages for ``elif``/``else`` statements not
+matching any valid statements, which made in hard to locate the syntax
+errors inside those ``elif``/``else`` blocks.
+
+..
+
+.. date: 2024-05-31-12-06-11
+.. gh-issue: 119842
+.. nonce: tCGVsv
+.. section: Core and Builtins
+
+Honor :c:func:`PyOS_InputHook` in the new REPL. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-05-30-23-01-00
+.. gh-issue: 119821
+.. nonce: jPGfvt
+.. section: Core and Builtins
+
+Fix execution of :ref:`annotation scopes <annotation-scopes>` within classes
+when ``globals`` is set to a non-dict. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-05-25-16-45-27
+.. gh-issue: 119548
+.. nonce: pqF9Y6
+.. section: Core and Builtins
+
+Add a ``clear`` command to the REPL. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-05-25-13-51-48
+.. gh-issue: 111999
+.. nonce: L0q1gh
+.. section: Core and Builtins
+
+Fix the signature of :meth:`str.format_map`.
+
+..
+
+.. date: 2024-05-25-12-52-25
+.. gh-issue: 119560
+.. nonce: wSlm8q
+.. section: Core and Builtins
+
+An invalid assert in beta 1 has been removed.  The assert would fail if
+``PyState_FindModule()`` was used in an extension module's init function
+before the module def had been initialized.
+
+..
+
+.. date: 2024-05-24-21-16-52
+.. gh-issue: 119369
+.. nonce: qBThho
+.. section: Core and Builtins
+
+Fix deadlock during thread deletion in free-threaded build, which could
+occur when the GIL was enabled at runtime.
+
+..
+
+.. date: 2024-05-24-21-04-00
+.. gh-issue: 119525
+.. nonce: zLFLf1
+.. section: Core and Builtins
+
+Fix deadlock involving ``_PyType_Lookup()`` cache in the free-threaded build
+when the GIL is dynamically enabled at runtime.
+
+..
+
+.. date: 2024-05-23-06-34-45
+.. gh-issue: 119311
+.. nonce: 2DBwKR
+.. section: Core and Builtins
+
+Fix bug where names are unexpectedly mangled in the bases of generic
+classes.
+
+..
+
+.. date: 2024-05-23-06-34-14
+.. gh-issue: 119395
+.. nonce: z-Hsqb
+.. section: Core and Builtins
+
+Fix bug where names appearing after a generic class are mangled as if they
+are in the generic class.
+
+..
+
+.. date: 2024-05-21-11-27-14
+.. gh-issue: 119213
+.. nonce: nxjxrt
+.. section: Core and Builtins
+
+Non-builtin modules built with argument clinic were crashing if used in a
+subinterpreter before the main interpreter.  The objects that were causing
+the problem by leaking between interpreters carelessly have been fixed.
+
+..
+
+.. date: 2024-05-21-09-46-51
+.. gh-issue: 119011
+.. nonce: WOe3bu
+.. section: Core and Builtins
+
+Fixes ``type.__type_params__`` to return an empty tuple instead of a
+descriptor.
+
+..
+
+.. date: 2024-05-20-14-57-39
+.. gh-issue: 118692
+.. nonce: Qadm7F
+.. section: Core and Builtins
+
+Avoid creating unnecessary :exc:`StopIteration` instances for monitoring.
+
+..
+
+.. date: 2024-05-16-23-02-03
+.. gh-issue: 119049
+.. nonce: qpd_S-
+.. section: Core and Builtins
+
+Fix displaying the source line for warnings created by the C API if the
+:mod:`warnings` module had not yet been imported.
+
+..
+
+.. date: 2024-05-11-21-44-17
+.. gh-issue: 118844
+.. nonce: q2H_km
+.. section: Core and Builtins
+
+Fix build failures when configuring with both ``--disable-gil`` and
+``--enable-experimental-jit``.
+
+..
+
+.. date: 2024-05-10-19-54-18
+.. gh-issue: 118921
+.. nonce: O4ztZG
+.. section: Core and Builtins
+
+Add ``copy()`` method for ``FrameLocalsProxy`` which returns a snapshot
+``dict`` for local variables.
+
+..
+
+.. date: 2024-05-09-19-47-12
+.. gh-issue: 117657
+.. nonce: Vn0Yey
+.. section: Core and Builtins
+
+Fix data races on the field that stores a pointer to the interpreter's main
+thread that occur in free-threaded builds.
+
+..
+
+.. date: 2024-05-07-16-57-56
+.. gh-issue: 118561
+.. nonce: wNMKVd
+.. section: Core and Builtins
+
+Fix race condition in free-threaded build where :meth:`!list.extend` could
+expose uninitialised memory to concurrent readers.
+
+..
+
+.. date: 2024-03-25-15-07-01
+.. gh-issue: 117195
+.. nonce: OWakgD
+.. section: Core and Builtins
+
+Avoid assertion failure for debug builds when calling
+``object.__sizeof__(1)``
+
+..
+
+.. date: 2024-06-04-12-23-01
+.. gh-issue: 119819
+.. nonce: WKKrYh
+.. section: Library
+
+Fix regression to allow logging configuration with multiprocessing queue
+types.
+
+..
+
+.. date: 2024-06-03-11-18-16
+.. gh-issue: 117142
+.. nonce: kWTXQo
+.. section: Library
+
+The :mod:`ctypes` module may now be imported in all subinterpreters,
+including those that have their own GIL.
+
+..
+
+.. date: 2024-06-02-15-09-17
+.. gh-issue: 118835
+.. nonce: KUAuz6
+.. section: Library
+
+Fix _pyrepl crash when using custom prompt with ANSI escape codes.
+
+..
+
+.. date: 2024-06-01-16-58-43
+.. gh-issue: 117398
+.. nonce: kR0RW7
+.. section: Library
+
+The ``_datetime`` module (C implementation for :mod:`datetime`) now supports
+being imported in multiple interpreters.
+
+..
+
+.. date: 2024-05-30-21-37-05
+.. gh-issue: 89727
+.. nonce: D6S9ig
+.. section: Library
+
+Fix issue with :func:`shutil.rmtree` where a :exc:`RecursionError` is raised
+on deep directory trees.
+
+..
+
+.. date: 2024-05-29-20-42-17
+.. gh-issue: 89727
+.. nonce: 5lPTTW
+.. section: Library
+
+Partially fix issue with :func:`shutil.rmtree` where a :exc:`RecursionError`
+is raised on deep directory trees. A recursion error is no longer raised
+when :data:`!rmtree.avoids_symlink_attacks` is false.
+
+..
+
+.. date: 2024-05-28-12-15-03
+.. gh-issue: 119118
+.. nonce: FMKz1F
+.. section: Library
+
+Fix performance regression in the :mod:`tokenize` module by caching the
+``line`` token attribute and calculating the column offset more efficiently.
+
+..
+
+.. date: 2024-05-28-00-56-59
+.. gh-issue: 89727
+.. nonce: _bxoL3
+.. section: Library
+
+Fix issue with :func:`os.fwalk` where a :exc:`RecursionError` was raised on
+deep directory trees by adjusting the implementation to be iterative instead
+of recursive.
+
+..
+
+.. date: 2024-05-26-21-28-11
+.. gh-issue: 119588
+.. nonce: wlLBK5
+.. section: Library
+
+``zipfile.Path.is_symlink`` now assesses if the given path is a symlink.
+
+..
+
+.. date: 2024-05-25-20-15-26
+.. gh-issue: 119555
+.. nonce: mvHbEL
+.. section: Library
+
+Catch :exc:`SyntaxError` from :func:`compile` in the runsource() method of
+the InteractiveColoredConsole.  Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-05-24-21-54-55
+.. gh-issue: 113892
+.. nonce: JKDFqq
+.. section: Library
+
+Now, the method ``sock_connect`` of :class:`asyncio.ProactorEventLoop`
+raises a :exc:`ValueError` if given socket is not in non-blocking mode, as
+well as in other loop implementations.
+
+..
+
+.. date: 2024-05-23-22-29-59
+.. gh-issue: 119443
+.. nonce: KAGz6S
+.. section: Library
+
+The interactive REPL no longer runs with ``from __future__ import
+annotations`` enabled. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-05-23-11-52-36
+.. gh-issue: 117398
+.. nonce: 2FG1Mk
+.. section: Library
+
+Objects in the datetime C-API are now all statically allocated, which means
+better memory safety, especially when the module is reloaded. This should be
+transparent to users.
+
+..
+
+.. date: 2024-05-22-21-20-43
+.. gh-issue: 118894
+.. nonce: xHdxR_
+.. section: Library
+
+:mod:`asyncio` REPL now has the same capabilities as PyREPL.
+
+..
+
+.. date: 2024-05-21-20-13-23
+.. gh-issue: 118911
+.. nonce: iG8nMq
+.. section: Library
+
+In PyREPL, updated ``maybe-accept``'s logic so that if the user hits
+:kbd:`Enter` twice, they are able to terminate the block even if there's
+trailing whitespace. Also, now when the user hits arrow up, the cursor is on
+the last functional line. This matches IPython's behavior. Patch by Aya
+Elsayed.
+
+..
+
+.. date: 2024-05-20-20-30-57
+.. gh-issue: 111201
+.. nonce: DAA5lC
+.. section: Library
+
+Remove dependency to :mod:`readline` from the new Python REPL.
+
+..
+
+.. date: 2024-05-19-18-49-04
+.. gh-issue: 119174
+.. nonce: 5GTv7d
+.. section: Library
+
+Fix high DPI causes turtledemo(turtle-graphics examples) windows blurry
+Patch by Wulian233 and Terry Jan Reedy
+
+..
+
+.. date: 2024-05-19-13-05-59
+.. gh-issue: 119121
+.. nonce: P1gnh1
+.. section: Library
+
+Fix a NameError happening in ``asyncio.staggered.staggered_race``. This
+function is now tested.
+
+..
+
+.. date: 2024-05-17-17-32-12
+.. gh-issue: 119113
+.. nonce: kEv1Ll
+.. section: Library
+
+Fix issue where :meth:`pathlib.PurePath.with_suffix` didn't raise
+:exc:`TypeError` when given ``None`` as a suffix.
+
+..
+
+.. date: 2024-05-16-17-31-46
+.. gh-issue: 118643
+.. nonce: hAWH4C
+.. section: Library
+
+Fix an AttributeError in the :mod:`email` module when re-fold a long address
+list. Also fix more cases of incorrect encoding of the address separator in
+the address list.
+
+..
+
+.. date: 2024-05-12-21-38-42
+.. gh-issue: 58933
+.. nonce: 0kgU2l
+.. section: Library
+
+Make :mod:`pdb` return to caller frame correctly when ``f_trace`` of the
+caller frame is not set
+
+..
+
+.. date: 2024-05-10-05-24-32
+.. gh-issue: 118895
+.. nonce: wUm5r2
+.. section: Library
+
+Setting attributes on :data:`typing.NoDefault` now raises
+:exc:`AttributeError` instead of :exc:`TypeError`.
+
+..
+
+.. date: 2024-05-09-21-36-11
+.. gh-issue: 118868
+.. nonce: uckxxP
+.. section: Library
+
+Fixed issue where kwargs were no longer passed to the logging handler
+QueueHandler
+
+..
+
+.. date: 2024-05-09-08-46-12
+.. gh-issue: 118851
+.. nonce: aPAoJw
+.. section: Library
+
+``ctx`` arguments to the constructors of :mod:`ast` node classes now default
+to :class:`ast.Load() <ast.Load>`. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-05-08-21-30-33
+.. gh-issue: 118760
+.. nonce: XvyMHn
+.. section: Library
+
+Restore the default value of ``tkiter.wantobjects`` to ``1``.
+
+..
+
+.. date: 2024-05-08-21-13-56
+.. gh-issue: 118760
+.. nonce: mdmH3T
+.. section: Library
+
+Fix errors in calling Tkinter bindings on Windows.
+
+..
+
+.. date: 2024-05-08-18-33-07
+.. gh-issue: 118507
+.. nonce: OCQsAY
+.. section: Library
+
+Fix :func:`os.path.isfile` on Windows for pipes.
+Speedup :func:`os.path.isjunction` and :func:`os.path.lexists` on Windows
+with a native implementation.
+
+..
+
+.. date: 2024-05-08-09-21-49
+.. gh-issue: 118772
+.. nonce: c16E8X
+.. section: Library
+
+Allow :class:`typing.TypeVar` instances without a default to follow
+instances without a default in some cases. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-05-01-22-24-05
+.. gh-issue: 110863
+.. nonce: GjYBbq
+.. section: Library
+
+:func:`os.path.realpath` now suppresses any :exc:`OSError` from
+:func:`os.readlink` when *strict* mode is disabled (the default).
+
+..
+
+.. date: 2024-04-28-19-51-00
+.. gh-issue: 118263
+.. nonce: Gaap3S
+.. section: Library
+
+Speed up :func:`os.path.splitroot` & :func:`os.path.normpath` with a direct
+C call.
+
+..
+
+.. date: 2024-04-19-14-59-53
+.. gh-issue: 118033
+.. nonce: amS4Gw
+.. section: Library
+
+Fix :func:`dataclasses.dataclass` not creating a ``__weakref__`` slot when
+subclassing :class:`typing.Generic`.
+
+..
+
+.. date: 2024-03-19-21-41-31
+.. gh-issue: 106531
+.. nonce: Mgd--6
+.. section: Library
+
+In :mod:`importlib.resources`, sync with `importlib_resources 6.3.2
+<https://importlib-resources.readthedocs.io/en/latest/history.html#v6-3-2>`_,
+including: ``MultiplexedPath`` now expects ``Traversable`` paths,
+deprecating string arguments to ``MultiplexedPath``; Enabled support for
+resources in namespace packages in zip files; Fixed ``NotADirectoryError``
+when calling files on a subdirectory of a namespace package.
+
+..
+
+.. date: 2024-01-12-08-51-03
+.. gh-issue: 113978
+.. nonce: MqTgB0
+.. section: Library
+
+Ignore warnings on text completion inside REPL.
+
+..
+
+.. date: 2023-04-28-09-54-15
+.. gh-issue: 103956
+.. nonce: EyLDPS
+.. section: Library
+
+Fix lack of newline characters in :mod:`trace` module output when line
+tracing is enabled but source code line for current frame is not available.
+
+..
+
+.. date: 2023-04-26-22-24-17
+.. gh-issue: 92081
+.. nonce: V8xMot
+.. section: Library
+
+Fix missing spaces in email headers when the spaces are mixed with encoded
+8-bit characters.
+
+..
+
+.. date: 2023-04-24-05-34-23
+.. gh-issue: 103194
+.. nonce: GwBwWL
+.. section: Library
+
+Prepare Tkinter for C API changes in Tcl 8.7/9.0 to avoid
+:class:`!_tkinter.Tcl_Obj` being unexpectedly returned instead of
+:class:`bool`, :class:`str`, :class:`bytearray`, or :class:`int`.
+
+..
+
+.. date: 2023-04-10-00-04-37
+.. gh-issue: 87106
+.. nonce: UyBnPQ
+.. section: Library
+
+Fixed handling in :meth:`inspect.Signature.bind` of keyword arguments having
+the same name as positional-only arguments when a variadic keyword argument
+(e.g. ``**kwargs``) is present.
+
+..
+
+.. bpo: 45767
+.. date: 2022-03-10-16-47-57
+.. nonce: ywmyo1
+.. section: Library
+
+Fix integer conversion in :func:`os.major`, :func:`os.minor`, and
+:func:`os.makedev`. Support device numbers larger than ``2**63-1``. Support
+non-existent device number (``NODEV``).
+
+..
+
+.. date: 2019-08-27-01-16-50
+.. gh-issue: 67693
+.. nonce: 4NIAiy
+.. section: Library
+
+Fix :func:`urllib.parse.urlunparse` and :func:`urllib.parse.urlunsplit` for
+URIs with path starting with multiple slashes and no authority. Based on
+patch by Ashwin Ramaswami.
+
+..
+
+.. date: 2024-05-18-10-59-27
+.. gh-issue: 119050
+.. nonce: g4qiH7
+.. section: Tests
+
+regrtest test runner: Add XML support to the refleak checker (-R option).
+Patch by Victor Stinner.
+
+..
+
+.. date: 2024-05-29-17-40-50
+.. gh-issue: 119729
+.. nonce: k0xJ5U
+.. section: Build
+
+On POSIX systems, the pkg-config (``.pc``) filenames now include the ABI
+flags, which may include debug ("d") and free-threaded ("t").  For example:
+* ``python-3.14.pc`` (default, non-debug build) * ``python-3.14d.pc``
+(default, debug build) * ``python-3.14t.pc`` (free-threaded build)
+
+..
+
+.. date: 2024-05-19-22-54-55
+.. gh-issue: 115119
+.. nonce: DwMwev
+.. section: Build
+
+Fall back to the bundled libmpdec if a system version cannot be found.
+
+..
+
+.. date: 2024-05-17-19-53-27
+.. gh-issue: 119132
+.. nonce: wepPgM
+.. section: Build
+
+Update :data:`sys.version` to identify whether the build is default build or
+free-threading build. Patch By Donghee Na.
+
+..
+
+.. date: 2024-05-13-15-57-58
+.. gh-issue: 118836
+.. nonce: 7yN1iB
+.. section: Build
+
+Fix an ``AssertionError`` when building with ``--enable-experimental-jit``
+and the compiler emits a ``SHT_NOTE`` section.
+
+..
+
+.. date: 2024-05-11-15-11-30
+.. gh-issue: 118943
+.. nonce: VI_MnY
+.. section: Build
+
+Fix a possible race condition affecting parallel builds configured with
+``--enable-experimental-jit``, in which compilation errors could be caused
+by an incompletely-generated header file.
+
+..
+
+.. date: 2024-05-30-17-39-25
+.. gh-issue: 119679
+.. nonce: mZC87w
+.. section: Windows
+
+Ensures correct import libraries are included in Windows installs.
+
+..
+
+.. date: 2024-05-29-11-06-12
+.. gh-issue: 119690
+.. nonce: 8q6e1p
+.. section: Windows
+
+Adds Unicode support and fixes audit events for ``_winapi.CreateNamedPipe``.
+
+..
+
+.. date: 2024-05-25-18-43-10
+.. gh-issue: 111201
+.. nonce: SLPJIx
+.. section: Windows
+
+Add support for new pyrepl on Windows
+
+..
+
+.. date: 2024-05-22-19-43-29
+.. gh-issue: 119070
+.. nonce: _enton
+.. section: Windows
+
+Fixes ``py.exe`` handling of shebangs like ``/usr/bin/env python3.12``,
+which were previously interpreted as ``python3.exe`` instead of
+``python3.12.exe``.
+
+..
+
+.. date: 2024-04-24-22-50-33
+.. gh-issue: 117505
+.. nonce: gcTb_p
+.. section: Windows
+
+Fixes an issue with the Windows installer not running ensurepip in a fully
+isolated environment. This could cause unexpected interactions with the user
+site-packages.
+
+..
+
+.. date: 2024-04-24-05-16-32
+.. gh-issue: 118209
+.. nonce: Ryyzlz
+.. section: Windows
+
+Avoid crashing in :mod:`mmap` on Windows when the mapped memory is
+inaccessible due to file system errors or access violations.
+
+..
+
+.. date: 2024-03-19-19-04-56
+.. gh-issue: 116145
+.. nonce: srVT3d
+.. section: Windows
+
+Updated bundled Tcl/Tk to 8.6.14.
+
+..
+
+.. date: 2024-05-29-21-05-59
+.. gh-issue: 119585
+.. nonce: Sn7JL3
+.. section: C API
+
+Fix crash when a thread state that was created by
+:c:func:`PyGILState_Ensure` calls a destructor that during
+:c:func:`PyThreadState_Clear` that calls back into
+:c:func:`PyGILState_Ensure` and :c:func:`PyGILState_Release`. This might
+occur when in the free-threaded build or when using thread-local variables
+whose destructors call :c:func:`PyGILState_Ensure`.
+
+..
+
+.. date: 2024-05-22-17-50-48
+.. gh-issue: 119336
+.. nonce: ff3qnS
+.. section: C API
+
+Restore the removed ``_PyLong_NumBits()`` function. It is used by the
+pywin32 project. Patch by Ethan Smith
+
+..
+
+.. date: 2024-05-21-11-35-11
+.. gh-issue: 119247
+.. nonce: U6n6mh
+.. section: C API
+
+Added ``Py_BEGIN_CRITICAL_SECTION_SEQUENCE_FAST`` and
+``Py_END_CRITICAL_SECTION_SEQUENCE_FAST`` macros to make it possible to use
+PySequence_Fast APIs safely when free-threaded, and update str.join to work
+without the GIL using them.
+
+..
+
+.. date: 2024-05-20-10-35-22
+.. gh-issue: 111389
+.. nonce: a6axBk
+.. section: C API
+
+Add :c:macro:`PyHASH_MULTIPLIER` constant: prime multiplier used in string
+and various other hashes. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-05-08-23-14-06
+.. gh-issue: 116984
+.. nonce: 5sgcDo
+.. section: C API
+
+Make mimalloc includes relative to the current file to avoid embedders or
+extensions needing to include ``Internal/mimalloc`` if they are already
+including internal CPython headers.
+
+..
+
+.. date: 2024-05-08-20-13-00
+.. gh-issue: 118789
+.. nonce: m88uUa
+.. section: C API
+
+Restore ``_PyWeakref_ClearRef`` that was previously removed in Python 3.13
+alpha 1.
diff --git a/Misc/NEWS.d/3.13.0b3.rst b/Misc/NEWS.d/3.13.0b3.rst
new file mode 100644
index 00000000000000..87a178712d0b2a
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0b3.rst
@@ -0,0 +1,664 @@
+.. date: 2024-06-26-14-09-31
+.. gh-issue: 120838
+.. nonce: nFeTL9
+.. release date: 2024-06-27
+.. section: Core and Builtins
+
+:c:func:`Py_Finalize()` and :c:func:`Py_FinalizeEx()` now always run with
+the main interpreter active.
+
+..
+
+.. date: 2024-06-26-13-42-36
+.. gh-issue: 113433
+.. nonce: xKAtLB
+.. section: Core and Builtins
+
+Subinterpreters now get cleaned up automatically during runtime
+finalization.
+
+..
+
+.. date: 2024-06-19-11-10-50
+.. gh-issue: 119462
+.. nonce: DpcqSe
+.. section: Core and Builtins
+
+Make sure that invariants of type versioning are maintained: * Superclasses
+always have their version number assigned before subclasses * The version
+tag is always zero if the tag is not valid. * The version tag is always
+non-zero if the tag is valid.
+
+..
+
+.. date: 2024-06-19-01-58-54
+.. gh-issue: 120437
+.. nonce: nCkIoI
+.. section: Core and Builtins
+
+Fix ``_CHECK_STACK_SPACE`` optimization problems introduced in :gh:`118322`.
+
+..
+
+.. date: 2024-06-18-22-41-05
+.. gh-issue: 120722
+.. nonce: rS7tkE
+.. section: Core and Builtins
+
+Correctly set the bytecode position on return instructions within lambdas.
+Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-06-18-21-34-30
+.. gh-issue: 120367
+.. nonce: zDwffP
+.. section: Core and Builtins
+
+Fix bug where compiler creates a redundant jump during pseudo-op
+replacement. Can only happen with a synthetic AST that has a try on the same
+line as the instruction following the exception handler.
+
+..
+
+.. date: 2024-06-14-22-02-25
+.. gh-issue: 113993
+.. nonce: MiA0vX
+.. section: Core and Builtins
+
+Strings interned with :func:`sys.intern` are again garbage-collected when no
+longer used, as per the documentation. Strings interned with the C function
+:c:func:`PyUnicode_InternInPlace` are still immortal. Internals of the
+string interning mechanism have been changed. This may affect performance
+and identities of :class:`str` objects.
+
+..
+
+.. date: 2024-06-13-12-17-52
+.. gh-issue: 120384
+.. nonce: w1UBGl
+.. section: Core and Builtins
+
+Fix an array out of bounds crash in ``list_ass_subscript``, which could be
+invoked via some specificly tailored input: including concurrent
+modification of a list object, where one thread assigns a slice and another
+clears it.
+
+..
+
+.. date: 2024-06-12-18-50-29
+.. gh-issue: 120367
+.. nonce: LmXx2y
+.. section: Core and Builtins
+
+Fix crash in compiler on code with redundant NOPs and JUMPs which show up
+after exception handlers are moved to the end of the code.
+
+..
+
+.. date: 2024-06-12-18-23-15
+.. gh-issue: 120380
+.. nonce: edtqjq
+.. section: Core and Builtins
+
+Fix Python implementation of :class:`pickle.Pickler` for :class:`bytes` and
+:class:`bytearray` objects when using protocol version 5. Patch by Bénédikt
+Tran.
+
+..
+
+.. date: 2024-06-12-12-29-45
+.. gh-issue: 120400
+.. nonce: lZYHVS
+.. section: Core and Builtins
+
+Support Linux perf profiler to see Python calls on RISC-V architecture.
+
+..
+
+.. date: 2024-06-11-17-56-12
+.. gh-issue: 120221
+.. nonce: si9hM9
+.. section: Core and Builtins
+
+Deliver real signals on Ctrl-C and Ctrl-Z in the new REPL. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2024-06-11-12-47-54
+.. gh-issue: 120346
+.. nonce: hhn_6X
+.. section: Core and Builtins
+
+Respect :envvar:`PYTHON_BASIC_REPL` when running in interative inspect mode
+(``python -i``). Patch by Pablo Galindo
+
+..
+
+.. date: 2024-06-10-22-30-26
+.. gh-issue: 93691
+.. nonce: 68WOTS
+.. section: Core and Builtins
+
+Fix source locations of instructions generated for the iterator of a for
+statement.
+
+..
+
+.. date: 2024-06-10-15-07-16
+.. gh-issue: 120198
+.. nonce: WW_pjO
+.. section: Core and Builtins
+
+Fix a crash when multiple threads read and write to the same ``__class__``
+of an object concurrently.
+
+..
+
+.. date: 2024-06-10-10-42-48
+.. gh-issue: 120298
+.. nonce: napREA
+.. section: Core and Builtins
+
+Fix use-after free in ``list_richcompare_impl`` which can be invoked via
+some specificly tailored evil input.
+
+..
+
+.. date: 2024-06-09-19-13-38
+.. gh-issue: 119666
+.. nonce: S0G4rZ
+.. section: Core and Builtins
+
+Fix a compiler crash in the case where two comprehensions in class scope
+both reference ``__class__``.
+
+..
+
+.. date: 2024-06-07-16-09-04
+.. gh-issue: 120225
+.. nonce: kuYf9t
+.. section: Core and Builtins
+
+Fix crash in compiler on empty block at end of exception handler.
+
+..
+
+.. date: 2024-06-03-13-48-44
+.. gh-issue: 119933
+.. nonce: Kc0HG5
+.. section: Core and Builtins
+
+Improve :exc:`SyntaxError` messages for invalid expressions in a type
+parameters bound, a type parameter constraint tuple or a default type
+parameter. Patch by Bénédikt Tran.
+
+..
+
+.. bpo: 24766
+.. date: 2018-10-09-15-14-53
+.. nonce: c_C1Wc
+.. section: Core and Builtins
+
+Fix handling of ``doc`` argument to subclasses of ``property``.
+
+..
+
+.. date: 2024-06-27-13-47-14
+.. gh-issue: 121027
+.. nonce: jh55EC
+.. section: Library
+
+Add a future warning in :meth:`!functools.partial.__get__`. In future Python
+versions :class:`functools.partial` will be a method descriptor.
+
+..
+
+.. date: 2024-06-26-10-13-40
+.. gh-issue: 121025
+.. nonce: M-XXlV
+.. section: Library
+
+Improve the :meth:`~object.__repr__` of :class:`functools.partialmethod`.
+Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-06-26-03-04-24
+.. gh-issue: 121018
+.. nonce: clVSc4
+.. section: Library
+
+Fixed an issue where :meth:`!argparse.ArgumentParser.parses_args` did not
+honor ``exit_on_error=False`` when given unrecognized arguments. Patch by
+Ben Hsing.
+
+..
+
+.. date: 2024-06-23-17-50-40
+.. gh-issue: 119614
+.. nonce: vwPGLB
+.. section: Library
+
+Fix truncation of strings with embedded null characters in some internal
+operations in :mod:`tkinter`.
+
+..
+
+.. date: 2024-06-23-11-21-27
+.. gh-issue: 120910
+.. nonce: t0QXdB
+.. section: Library
+
+When reading installed files from an egg, use ``relative_to(walk_up=True)``
+to honor files installed outside of the installation root.
+
+..
+
+.. date: 2024-06-22-22-52-24
+.. gh-issue: 120888
+.. nonce: sd8I3N
+.. section: Library
+
+Upgrade pip wheel bundled with ensurepip (pip 24.1.1)
+
+..
+
+.. date: 2024-06-22-22-23-56
+.. gh-issue: 101830
+.. nonce: 1BAoxH
+.. section: Library
+
+Accessing the :mod:`tkinter` object's string representation no longer
+converts the underlying Tcl object to a string on Windows.
+
+..
+
+.. date: 2024-06-21-14-32-56
+.. gh-issue: 120811
+.. nonce: eBmVTV
+.. section: Library
+
+Fix possible memory leak in :meth:`contextvars.Context.run`.
+
+..
+
+.. date: 2024-06-20-01-31-24
+.. gh-issue: 120769
+.. nonce: PfiMrc
+.. section: Library
+
+Make empty line in :mod:`pdb` repeats the last command even when the command
+is from ``cmdqueue``.
+
+..
+
+.. date: 2024-06-19-15-06-58
+.. gh-issue: 120732
+.. nonce: OvYV9b
+.. section: Library
+
+Fix ``name`` passing to :class:`unittest.mock.Mock` object when using
+:func:`unittest.mock.create_autospec`.
+
+..
+
+.. date: 2024-06-18-19-18-10
+.. gh-issue: 120683
+.. nonce: xmRez7
+.. section: Library
+
+Fix an error in :class:`logging.LogRecord`, when the integer part of the
+timestamp is rounded up, while the millisecond calculation truncates,
+causing the log timestamp to be wrong by up to 999 ms (affected roughly 1 in
+8 million timestamps).
+
+..
+
+.. date: 2024-06-17-20-04-13
+.. gh-issue: 120633
+.. nonce: kZC5wt
+.. section: Library
+
+Move scrollbar and remove tear-off menus in turtledemo.
+
+..
+
+.. date: 2024-06-15-12-04-46
+.. gh-issue: 120541
+.. nonce: d3cc5y
+.. section: Library
+
+Improve the prompt in the "less" pager when :func:`help` is called with
+non-string argument.
+
+..
+
+.. date: 2024-06-14-20-05-25
+.. gh-issue: 120495
+.. nonce: OxgZKB
+.. section: Library
+
+Fix incorrect exception handling in Tab Nanny. Patch by Wulian233.
+
+..
+
+.. date: 2024-06-12-11-54-05
+.. gh-issue: 120381
+.. nonce: O-BNLs
+.. section: Library
+
+Correct :func:`inspect.ismethoddescriptor` to check also for the lack of
+:meth:`~object.__delete__`.  Patch by Jan Kaliszewski.
+
+..
+
+.. date: 2024-06-12-10-00-31
+.. gh-issue: 90425
+.. nonce: 5CfkKG
+.. section: Library
+
+The OS byte in gzip headers is now always set to 255 when using
+:func:`gzip.compress`.
+
+..
+
+.. date: 2024-06-11-16-34-41
+.. gh-issue: 120343
+.. nonce: hdiXeU
+.. section: Library
+
+Fix column offset reporting for tokens that come after multiline f-strings
+in the :mod:`tokenize` module.
+
+..
+
+.. date: 2024-06-10-14-00-40
+.. gh-issue: 119600
+.. nonce: jJMf4C
+.. section: Library
+
+Fix :func:`unittest.mock.patch` to not read attributes of the target when
+``new_callable`` is set. Patch by Robert Collins.
+
+..
+
+.. date: 2024-06-08-15-46-35
+.. gh-issue: 114053
+.. nonce: Ub2XgJ
+.. section: Library
+
+Fix edge-case bug where :func:`typing.get_type_hints` would produce
+incorrect results if type parameters in a class scope were overridden by
+assignments in a class scope and ``from __future__ import annotations``
+semantics were enabled. Patch by Alex Waygood.
+
+..
+
+.. date: 2024-06-08-15-15-29
+.. gh-issue: 114053
+.. nonce: WQLAFG
+.. section: Library
+
+Fix erroneous :exc:`NameError` when calling :func:`inspect.get_annotations`
+with ``eval_str=True``` on a class that made use of :pep:`695` type
+parameters in a module that had ``from __future__ import annotations`` at
+the top of the file. Patch by Alex Waygood.
+
+..
+
+.. date: 2024-06-08-14-36-40
+.. gh-issue: 120268
+.. nonce: MNpd1q
+.. section: Library
+
+Prohibit passing ``None`` to pure-Python :meth:`datetime.date.fromtimestamp`
+to achieve consistency with C-extension implementation.
+
+..
+
+.. date: 2024-06-08-09-45-31
+.. gh-issue: 120244
+.. nonce: 8o9Dzr
+.. section: Library
+
+Fix memory leak in :func:`re.sub` when the replacement string contains
+backreferences.
+
+..
+
+.. date: 2024-06-07-13-21-11
+.. gh-issue: 120211
+.. nonce: Rws_gf
+.. section: Library
+
+Fix :mod:`tkinter.ttk` with Tcl/Tk 9.0.
+
+..
+
+.. date: 2024-06-07-11-23-31
+.. gh-issue: 71587
+.. nonce: IjFajE
+.. section: Library
+
+Fix crash in C version of :meth:`datetime.datetime.strptime` when called
+again on the restarted interpreter.
+
+..
+
+.. date: 2024-06-06-17-24-43
+.. gh-issue: 120161
+.. nonce: DahNXV
+.. section: Library
+
+:mod:`datetime` no longer crashes in certain complex reference cycle
+situations.
+
+..
+
+.. date: 2024-06-06-12-07-57
+.. gh-issue: 119698
+.. nonce: rRrprk
+.. section: Library
+
+Fix :meth:`symtable.Class.get_methods` and document its behaviour. Patch by
+Bénédikt Tran.
+
+..
+
+.. date: 2024-06-05-16-30-28
+.. gh-issue: 120121
+.. nonce: 9dz8i7
+.. section: Library
+
+Add :exc:`concurrent.futures.InvalidStateError` to module's ``__all__``.
+
+..
+
+.. date: 2024-06-05-11-39-21
+.. gh-issue: 119933
+.. nonce: ooJXQV
+.. section: Library
+
+Add the :class:`symtable.SymbolTableType` enumeration to represent the
+possible outputs of the :class:`symtable.SymbolTable.get_type` method. Patch
+by Bénédikt Tran.
+
+..
+
+.. date: 2024-06-05-08-02-46
+.. gh-issue: 120108
+.. nonce: 4U9BL8
+.. section: Library
+
+Fix calling :func:`copy.deepcopy` on :mod:`ast` trees that have been
+modified to have references to parent nodes. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-06-04-19-03-25
+.. gh-issue: 112672
+.. nonce: K2XfZH
+.. section: Library
+
+Support building :mod:`tkinter` with Tcl 9.0.
+
+..
+
+.. date: 2024-06-04-08-57-02
+.. gh-issue: 65454
+.. nonce: o9j4wF
+.. section: Library
+
+:func:`unittest.mock.Mock.attach_mock` no longer triggers a call to a
+``PropertyMock`` being attached.
+
+..
+
+.. date: 2024-06-02-13-35-11
+.. gh-issue: 81936
+.. nonce: ETeW9x
+.. section: Library
+
+:meth:`!help` and :meth:`!showtopic` methods now respect a configured
+*output* argument to :class:`!pydoc.Helper` and not use the pager in such
+cases. Patch by Enrico Tröger.
+
+..
+
+.. date: 2024-05-29-21-50-05
+.. gh-issue: 119577
+.. nonce: S3BlKJ
+.. section: Library
+
+The :exc:`DeprecationWarning` emitted when testing the truth value of an
+:class:`xml.etree.ElementTree.Element` now describes unconditionally
+returning ``True`` in a future version rather than raising an exception in
+Python 3.14.
+
+..
+
+.. date: 2024-05-25-10-40-38
+.. gh-issue: 118908
+.. nonce: XcZiq4
+.. section: Library
+
+Limit exposed globals from internal imports and definitions on new REPL
+startup. Patch by Eugene Triguba and Pablo Galindo.
+
+..
+
+.. date: 2024-05-24-14-32-24
+.. gh-issue: 119506
+.. nonce: -nMNqq
+.. section: Library
+
+Fix :meth:`!io.TextIOWrapper.write` method breaks internal buffer when the
+method is called again during flushing internal buffer.
+
+..
+
+.. date: 2024-06-21-09-24-03
+.. gh-issue: 120671
+.. nonce: Z8sBQB
+.. section: Build
+
+Fix failing configure tests due to a missing space when appending to CFLAGS.
+
+..
+
+.. date: 2024-06-19-21-05-15
+.. gh-issue: 120602
+.. nonce: UyDARz
+.. section: Build
+
+Correctly handle LLVM installs with ``LLVM_VERSION_SUFFIX`` when building
+with ``--enable-experimental-jit``.
+
+..
+
+.. date: 2024-06-11-00-38-05
+.. gh-issue: 120326
+.. nonce: JHSDF1
+.. section: Build
+
+On Windows, fix build error when ``--disable-gil`` and
+``--experimental-jit`` options are combined.
+
+..
+
+.. date: 2024-06-09-15-54-22
+.. gh-issue: 120291
+.. nonce: IpfHzE
+.. section: Build
+
+Make the ``python-config`` shell script compatible with non-bash shells.
+
+..
+
+.. date: 2024-06-26-11-29-01
+.. gh-issue: 120642
+.. nonce: H7P9qK
+.. section: C API
+
+Remove the private ``_Py_CODEUNIT`` type from the public C API. The internal
+``pycore_code.h`` header should now be used to get this internal type. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2024-06-21-16-41-21
+.. gh-issue: 120858
+.. nonce: Z5_-Mn
+.. section: C API
+
+:c:func:`PyDict_Next` no longer locks the dictionary in the free-threaded
+build.  The locking needs to be done by the caller around the entire
+iteration loop.
+
+..
+
+.. date: 2024-06-19-21-27-42
+.. gh-issue: 120642
+.. nonce: UlKClN
+.. section: C API
+
+Remove the following unstable functions:
+
+* ``PyUnstable_Replace_Executor()``
+* ``PyUnstable_SetOptimizer()``
+* ``PyUnstable_GetOptimizer()``
+* ``PyUnstable_GetExecutor()``
+* ``PyUnstable_Optimizer_NewCounter()``
+* ``PyUnstable_Optimizer_NewUOpOptimizer()``
+
+Patch by Victor Stinner.
+
+..
+
+.. date: 2024-05-21-19-41-41
+.. gh-issue: 119344
+.. nonce: QKvzQb
+.. section: C API
+
+The critical section API is now public as part of the non-limited C API.
+
+..
+
+.. date: 2024-05-08-21-57-50
+.. gh-issue: 118789
+.. nonce: Ni4UQx
+.. section: C API
+
+Add :c:func:`PyUnstable_Object_ClearWeakRefsNoCallbacks`, which clears
+weakrefs without calling their callbacks.
+
+..
+
+.. date: 2024-04-10-16-48-04
+.. gh-issue: 117511
+.. nonce: RZtBRK
+.. section: C API
+
+Make the :c:type:`PyMutex` public in the non-limited C API.
diff --git a/Misc/NEWS.d/3.13.0b4.rst b/Misc/NEWS.d/3.13.0b4.rst
new file mode 100644
index 00000000000000..69b64f3f8602c9
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0b4.rst
@@ -0,0 +1,476 @@
+.. date: 2024-07-04-15-10-29
+.. gh-issue: 121084
+.. nonce: qxcd5d
+.. release date: 2024-07-18
+.. section: Tests
+
+Fix test_typing random leaks. Clear typing ABC caches when running tests for
+refleaks (``-R`` option): call ``_abc_caches_clear()`` on typing abstract
+classes and their subclasses. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-07-03-14-41-00
+.. gh-issue: 121160
+.. nonce: LEtiTd
+.. section: Tests
+
+Add a test for :func:`readline.set_history_length`. Note that this test may
+fail on readline libraries.
+
+..
+
+.. date: 2024-07-01-16-15-06
+.. gh-issue: 121200
+.. nonce: 4Pc-gc
+.. section: Tests
+
+Fix ``test_expanduser_pwd2()`` of ``test_posixpath``.  Call ``getpwnam()``
+to get ``pw_dir``, since it can be different than ``getpwall()`` ``pw_dir``.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2024-07-01-09-04-32
+.. gh-issue: 121188
+.. nonce: XbuTVa
+.. section: Tests
+
+When creating the JUnit XML file, regrtest now escapes characters which are
+invalid in XML, such as the chr(27) control character used in ANSI escape
+sequences. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-07-14-06-24-02
+.. gh-issue: 57141
+.. nonce: C3jhDh
+.. section: Library
+
+The *shallow* argument to :class:`filecmp.dircmp` (new in Python 3.13) is
+now keyword-only.
+
+..
+
+.. date: 2024-07-13-06-23-24
+.. gh-issue: 121245
+.. nonce: RfOgf4
+.. section: Library
+
+Simplify handling of the history file in ``site.register_readline()``
+helper. The ``CAN_USE_PYREPL`` variable now will be initialized, when
+imported.  Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-07-03-07-25-21
+.. gh-issue: 121332
+.. nonce: Iz6FEq
+.. section: Library
+
+Fix constructor of :mod:`ast` nodes with custom ``_attributes``. Previously,
+passing custom attributes would raise a :py:exc:`DeprecationWarning`.
+Passing arguments to the constructor that are not in ``_fields`` or
+``_attributes`` remains deprecated. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-07-02-19-36-54
+.. gh-issue: 121279
+.. nonce: BltDo9
+.. section: Library
+
+Avoid :exc:`NameError` for the :mod:`warnings` module when accessing the
+depracated atributes of the :mod:`importlib.abc` module.
+
+..
+
+.. date: 2024-07-02-11-34-06
+.. gh-issue: 121245
+.. nonce: sSkDAr
+.. section: Library
+
+Fix a bug in the handling of the command history of the new :term:`REPL`
+that caused the history file to be wiped at REPL exit.
+
+..
+
+.. date: 2024-06-29-05-08-59
+.. gh-issue: 87744
+.. nonce: rpF6Jw
+.. section: Library
+
+Fix waitpid race while calling
+:meth:`~asyncio.subprocess.Process.send_signal` in asyncio. Patch by Kumar
+Aditya.
+
+..
+
+.. date: 2024-06-26-03-04-24
+.. gh-issue: 121018
+.. nonce: clVSc4
+.. section: Library
+
+Fixed other issues where :class:`argparse.ArgumentParser` did not honor
+``exit_on_error=False``.
+
+..
+
+.. date: 2024-06-22-17-01-56
+.. gh-issue: 120678
+.. nonce: Ik8dCg
+.. section: Library
+
+Fix regression in the new REPL that meant that globals from files passed
+using the ``-i`` argument would not be included in the REPL's global
+namespace. Patch by Alex Waygood.
+
+..
+
+.. date: 2024-06-21-12-00-16
+.. gh-issue: 120782
+.. nonce: LOE8tj
+.. section: Library
+
+Fix wrong references of the :mod:`datetime` types after reloading the
+module.
+
+..
+
+.. date: 2024-06-21-06-37-46
+.. gh-issue: 120713
+.. nonce: WBbQx4
+.. section: Library
+
+:meth:`datetime.datetime.strftime` now 0-pads years with less than four
+digits for the format specifiers ``%Y`` and ``%G`` on Linux. Patch by Ben
+Hsing
+
+..
+
+.. date: 2024-06-07-10-10-32
+.. gh-issue: 117983
+.. nonce: NeMR9n
+.. section: Library
+
+Defer the ``threading`` import in ``importlib.util`` until lazy loading is
+used.
+
+..
+
+.. date: 2024-05-20-13-48-37
+.. gh-issue: 119189
+.. nonce: dhJVs5
+.. section: Library
+
+When using the ``**`` operator or :func:`pow` with
+:class:`~fractions.Fraction` as the base and an exponent that is not
+rational, a float, or a complex, the fraction is no longer converted to a
+float.
+
+..
+
+.. date: 2024-05-07-17-38-53
+.. gh-issue: 118714
+.. nonce: XXKpVZ
+.. section: Library
+
+Allow ``restart`` in post-mortem debugging of :mod:`pdb`. Removed restart
+message when the user quits pdb from post-mortem mode.
+
+..
+
+.. date: 2023-06-17-09-07-06
+.. gh-issue: 105623
+.. nonce: 5G06od
+.. section: Library
+
+Fix performance degradation in
+:class:`logging.handlers.RotatingFileHandler`. Patch by Craig Robson.
+
+..
+
+.. date: 2024-07-16-16-57-03
+.. gh-issue: 78889
+.. nonce: U7ghFD
+.. section: IDLE
+
+Stop Shell freezes by blocking user access to non-method sys.stdout.shell
+attributes, which are all private.
+
+..
+
+.. date: 2024-07-14-11-48-10
+.. gh-issue: 121749
+.. nonce: nxHoTk
+.. section: Documentation
+
+Fix documentation for :c:func:`PyModule_AddObjectRef`.
+
+..
+
+.. date: 2024-06-05-12-36-18
+.. gh-issue: 120012
+.. nonce: f14DbQ
+.. section: Documentation
+
+Clarify the behaviours of :meth:`multiprocessing.Queue.empty` and
+:meth:`multiprocessing.SimpleQueue.empty` on closed queues. Patch by
+Bénédikt Tran.
+
+..
+
+.. date: 2024-07-16-18-23-22
+.. gh-issue: 121860
+.. nonce: -FTauD
+.. section: Core and Builtins
+
+Fix crash when rematerializing a managed dictionary after it was deleted.
+
+..
+
+.. date: 2024-07-15-20-41-06
+.. gh-issue: 121814
+.. nonce: oR2ixR
+.. section: Core and Builtins
+
+Fixed the SegFault when :c:func:`PyEval_SetTrace` is used with no Python
+frame on stack.
+
+..
+
+.. date: 2024-07-15-20-03-29
+.. gh-issue: 121295
+.. nonce: w53ucI
+.. section: Core and Builtins
+
+Fix PyREPL console getting into a blocked state after interrupting a long
+paste
+
+..
+
+.. date: 2024-07-15-16-26-32
+.. gh-issue: 121794
+.. nonce: fhBtiQ
+.. section: Core and Builtins
+
+Fix bug in free-threaded Python where a resurrected object could lead to a
+negative ref count assertion failure.
+
+..
+
+.. date: 2024-07-13-12-27-31
+.. gh-issue: 121657
+.. nonce: wgOYLw
+.. section: Core and Builtins
+
+Improve the :exc:`SyntaxError` message if the user tries to use
+:keyword:`yield from <yield>` outside a function.
+
+..
+
+.. date: 2024-07-13-09-51-44
+.. gh-issue: 121609
+.. nonce: jWsE5t
+.. section: Core and Builtins
+
+Fix pasting of characters containing unicode character joiners in the new
+REPL. Patch by Marta Gomez Macias
+
+..
+
+.. date: 2024-07-10-15-43-54
+.. gh-issue: 117482
+.. nonce: 5WYaXR
+.. section: Core and Builtins
+
+Unexpected slot wrappers are no longer created for builtin static types in
+subinterpreters.
+
+..
+
+.. date: 2024-07-09-13-53-18
+.. gh-issue: 121499
+.. nonce: rpp7il
+.. section: Core and Builtins
+
+Fix a bug affecting how multi-line history was being rendered in the new
+REPL after interacting with the new screen cache. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-07-08-17-15-14
+.. gh-issue: 121497
+.. nonce: I8hMDC
+.. section: Core and Builtins
+
+Fix a bug that was preventing the REPL to correctly respect the history when
+an input hook was set. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-07-08-10-31-08
+.. gh-issue: 121012
+.. nonce: M5hHk-
+.. section: Core and Builtins
+
+Tier 2 execution now ensures that list iterators remain exhausted, once they
+become exhausted.
+
+..
+
+.. date: 2024-07-08-02-24-55
+.. gh-issue: 121439
+.. nonce: jDHod3
+.. section: Core and Builtins
+
+Allow tuples of length 20 in the freelist to be reused.
+
+..
+
+.. date: 2024-07-04-23-38-30
+.. gh-issue: 121368
+.. nonce: m3EF9E
+.. section: Core and Builtins
+
+Fix race condition in ``_PyType_Lookup`` in the free-threaded build due to a
+missing memory fence.  This could lead to ``_PyType_Lookup`` returning
+incorrect results on arm64.
+
+..
+
+.. date: 2024-06-29-10-46-14
+.. gh-issue: 121130
+.. nonce: Rj66Xs
+.. section: Core and Builtins
+
+Fix f-strings with debug expressions in format specifiers. Patch by Pablo
+Galindo
+
+..
+
+.. date: 2024-06-28-10-02-58
+.. gh-issue: 121115
+.. nonce: EeSLfc
+.. section: Core and Builtins
+
+:c:func:`PyLong_AsNativeBytes` no longer uses :meth:`~object.__index__`
+methods by default. The ``Py_ASNATIVEBYTES_ALLOW_INDEX`` flag has been added
+to allow it.
+
+..
+
+.. date: 2024-07-09-15-55-20
+.. gh-issue: 89364
+.. nonce: yYYroI
+.. section: C API
+
+Export the :c:func:`PySignal_SetWakeupFd` function. Previously, the function
+was documented but it couldn't be used in 3rd party code. Patch by Victor
+Stinner.
+
+..
+
+.. date: 2024-07-04-15-41-10
+.. gh-issue: 113993
+.. nonce: cLSiWV
+.. section: C API
+
+:c:func:`PyUnicode_InternInPlace` no longer prevents its argument from being
+garbage collected.
+
+Several functions that take ``char *`` are now documented as possibly
+preventing string objects from being garbage collected; refer to their
+documentation for details: :c:func:`PyUnicode_InternFromString`,
+:c:func:`PyDict_SetItemString`, :c:func:`PyObject_SetAttrString`,
+:c:func:`PyObject_DelAttrString`, :c:func:`PyUnicode_InternFromString`, and
+``PyModule_Add*`` convenience functions.
+
+..
+
+.. date: 2024-07-04-13-23-27
+.. gh-issue: 113601
+.. nonce: K3RLqp
+.. section: C API
+
+Removed debug build assertions related to interning strings, which were
+falsely triggered by stable ABI extensions.
+
+..
+
+.. date: 2024-07-02-11-03-40
+.. gh-issue: 112136
+.. nonce: f3fiY8
+.. section: C API
+
+Restore the private ``_PyArg_Parser`` structure and the private
+``_PyArg_ParseTupleAndKeywordsFast()`` function, previously removed in
+Python 3.13 alpha 1. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-07-16-12-29-54
+.. gh-issue: 120371
+.. nonce: E7x858
+.. section: Build
+
+Support WASI SDK 22 by explicitly skipping functions that are just stubs in
+wasi-libc.
+
+..
+
+.. date: 2024-07-14-01-29-47
+.. gh-issue: 121731
+.. nonce: RMPGP3
+.. section: Build
+
+Fix mimalloc compile error on GNU/Hurd
+
+..
+
+.. date: 2024-07-08-14-01-17
+.. gh-issue: 121487
+.. nonce: ekHmpR
+.. section: Build
+
+Fix deprecation warning for ATOMIC_VAR_INIT in mimalloc.
+
+..
+
+.. date: 2024-07-08-01-11-54
+.. gh-issue: 121467
+.. nonce: 3qWRQj
+.. section: Build
+
+Fix a Makefile bug that prevented mimalloc header files from being
+installed.
+
+..
+
+.. date: 2024-07-02-20-16-09
+.. gh-issue: 121103
+.. nonce: TMef9j
+.. section: Build
+
+On POSIX systems, excluding macOS framework installs, the lib directory for
+the free-threaded build now includes a "t" suffix to avoid conflicts with a
+co-located default build installation.
+
+..
+
+.. date: 2024-07-02-12-42-25
+.. gh-issue: 120831
+.. nonce: i3eIjg
+.. section: Build
+
+The default minimum iOS version was increased to 13.0.
+
+..
+
+.. date: 2024-06-02-13-23-26
+.. gh-issue: 113565
+.. nonce: 8xBlId
+.. section: Build
+
+Improve :mod:`curses` and :mod:`curses.panel` dependency checks in
+:program:`configure`.
diff --git a/Misc/NEWS.d/3.13.0rc1.rst b/Misc/NEWS.d/3.13.0rc1.rst
new file mode 100644
index 00000000000000..84e693e0616235
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0rc1.rst
@@ -0,0 +1,273 @@
+.. date: 2024-07-13-11-48-20
+.. gh-issue: 59022
+.. nonce: fYNbQ8
+.. release date: 2024-07-31
+.. section: Tests
+
+Add tests for :func:`pkgutil.extend_path`. Patch by Andreas Stocker.
+
+..
+
+.. date: 2024-07-13-11-04-44
+.. gh-issue: 99242
+.. nonce: aGxnwz
+.. section: Tests
+
+:func:`os.getloadavg` may throw :exc:`OSError` when running regression tests
+under certain conditions (e.g. chroot). This error is now caught and
+ignored, since reporting load average is optional.
+
+..
+
+.. date: 2024-07-22-13-11-28
+.. gh-issue: 122133
+.. nonce: 0mPeta
+.. section: Security
+
+Authenticate the socket connection for the ``socket.socketpair()`` fallback
+on platforms where ``AF_UNIX`` is not available like Windows.
+
+Patch by Gregory P. Smith <greg@krypto.org> and Seth Larson
+<seth@python.org>. Reported by Ellie <el@horse64.org>
+
+..
+
+.. date: 2024-07-18-13-17-47
+.. gh-issue: 121957
+.. nonce: QemKLU
+.. section: Security
+
+Fixed missing audit events around interactive use of Python, now also
+properly firing for ``python -i``, as well as for ``python -m asyncio``. The
+events in question are ``cpython.run_stdin`` and ``cpython.run_startup``.
+
+..
+
+.. date: 2024-07-29-16-47-08
+.. gh-issue: 122400
+.. nonce: fM0YSv
+.. section: Library
+
+Handle :exc:`ValueError`\s raised by :func:`os.stat` in
+:class:`filecmp.dircmp` and :func:`filecmp.cmpfiles`. Patch by Bénédikt
+Tran.
+
+..
+
+.. date: 2024-07-29-10-24-48
+.. gh-issue: 122311
+.. nonce: xChV1b
+.. section: Library
+
+Fix some error messages in :mod:`pickle`.
+
+..
+
+.. date: 2024-07-26-21-21-13
+.. gh-issue: 122332
+.. nonce: fvw88r
+.. section: Library
+
+Fixed segfault with :meth:`asyncio.Task.get_coro` when using an eager task
+factory.
+
+..
+
+.. date: 2024-07-25-15-41-14
+.. gh-issue: 105733
+.. nonce: o3koJA
+.. section: Library
+
+:func:`ctypes.ARRAY` is now :term:`soft deprecated`: it no longer emits
+deprecation warnings and is not scheduled for removal.
+
+..
+
+.. date: 2024-07-24-09-29-55
+.. gh-issue: 122087
+.. nonce: FdBrWo
+.. section: Library
+
+Restore :func:`inspect.ismethoddescriptor` and :func:`inspect.isroutine`
+returning ``False`` for :class:`functools.partial` objects.
+
+..
+
+.. date: 2024-07-23-15-30-23
+.. gh-issue: 122170
+.. nonce: Z9gi3Y
+.. section: Library
+
+Handle :exc:`ValueError`\s raised by :func:`os.stat` in :mod:`linecache`.
+Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-07-23-09-14-44
+.. gh-issue: 82951
+.. nonce: -F5p5A
+.. section: Library
+
+Serializing objects with complex ``__qualname__`` (such as unbound methods
+and nested classes) by name no longer involves serializing parent objects by
+value in pickle protocols < 4.
+
+..
+
+.. date: 2024-07-22-08-14-04
+.. gh-issue: 113785
+.. nonce: 6B_KNB
+.. section: Library
+
+:mod:`csv` now correctly parses numeric fields (when used with
+:const:`csv.QUOTE_NONNUMERIC` or :const:`csv.QUOTE_STRINGS`) which start
+with an escape character.
+
+..
+
+.. date: 2024-07-21-18-03-30
+.. gh-issue: 122088
+.. nonce: vi2bP-
+.. section: Library
+
+:func:`@warnings.deprecated <warnings.deprecated>` now copies the coroutine
+status of functions and methods so that :func:`inspect.iscoroutinefunction`
+returns the correct result.
+
+..
+
+.. date: 2024-07-14-11-18-28
+.. gh-issue: 120930
+.. nonce: Kuo4L0
+.. section: Library
+
+Fixed a bug introduced by gh-92081 that added an incorrect extra blank to
+encoded words occurring in wrapped headers.
+
+..
+
+.. date: 2024-07-08-03-45-34
+.. gh-issue: 121474
+.. nonce: NsvrUN
+.. section: Library
+
+Fix missing sanity check for ``parties`` arg in :class:`threading.Barrier`
+constructor. Patch by Clinton Christian (pygeek).
+
+..
+
+.. date: 2024-06-09-19-53-11
+.. gh-issue: 120289
+.. nonce: s4HXR0
+.. section: Library
+
+Fixed the use-after-free issue in :mod:`cProfile` by disallowing
+``disable()`` and ``clear()`` in external timers.
+
+..
+
+.. date: 2024-07-30-18-02-55
+.. gh-issue: 122482
+.. nonce: TerE0g
+.. section: IDLE
+
+Change About IDLE to direct users to discuss.python.org instead of the now
+unused idle-dev email and mailing list.
+
+..
+
+.. date: 2024-07-29-10-55-46
+.. gh-issue: 116090
+.. nonce: p1MhU0
+.. section: Core and Builtins
+
+Fix an issue in JIT builds that prevented some :keyword:`for` loops from
+correctly firing :monitoring-event:`RAISE` monitoring events.
+
+..
+
+.. date: 2024-07-26-21-26-33
+.. gh-issue: 122208
+.. nonce: z8KHsY
+.. section: Core and Builtins
+
+Dictionary watchers now only deliver the PyDict_EVENT_ADDED event when the
+insertion is in a known good state to succeed.
+
+..
+
+.. date: 2024-07-26-14-05-51
+.. gh-issue: 122300
+.. nonce: SVIF-l
+.. section: Core and Builtins
+
+Preserve AST nodes for f-string with single-element format specifiers. Patch
+by Pablo Galindo
+
+..
+
+.. date: 2024-07-26-13-56-32
+.. gh-issue: 120906
+.. nonce: qBh2I9
+.. section: Core and Builtins
+
+:attr:`frame.f_locals` now supports arbitrary hashable objects as keys.
+
+..
+
+.. date: 2024-07-21-01-23-54
+.. gh-issue: 122029
+.. nonce: gKv-e2
+.. section: Core and Builtins
+
+Emit ``c_call`` events in :func:`sys.setprofile` when a ``PyMethodObject``
+pointing to a ``PyCFunction`` is called.
+
+..
+
+.. date: 2024-07-19-15-28-05
+.. gh-issue: 122026
+.. nonce: sta2Ca
+.. section: Core and Builtins
+
+Fix a bug that caused the tokenizer to not correctly identify mismatched
+parentheses inside f-strings in some situations. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-05-30-04-11-36
+.. gh-issue: 118934
+.. nonce: fbDqve
+.. section: Core and Builtins
+
+Make ``PyEval_GetLocals`` return borrowed reference
+
+..
+
+.. date: 2024-07-30-23-48-26
+.. gh-issue: 116622
+.. nonce: yTTtil
+.. section: C API
+
+Make :any:`PyObject_Print` work around a bug in Android and OpenBSD which
+prevented it from throwing an exception when trying to write to a read-only
+stream.
+
+..
+
+.. date: 2024-07-21-17-40-07
+.. gh-issue: 121489
+.. nonce: SUMFCr
+.. section: C API
+
+Export private :c:func:`!_PyBytes_Join` again.
+
+..
+
+.. date: 2024-07-18-07-53-07
+.. gh-issue: 120522
+.. nonce: dg3o5A
+.. section: Build
+
+Added a :option:`--with-app-store-compliance` option to patch out known
+issues with macOS/iOS App Store review processes.
diff --git a/Misc/NEWS.d/3.13.0rc2.rst b/Misc/NEWS.d/3.13.0rc2.rst
new file mode 100644
index 00000000000000..efd6615668520c
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0rc2.rst
@@ -0,0 +1,753 @@
+.. date: 2024-09-04-11-55-29
+.. gh-issue: 123418
+.. nonce: 8P4bmN
+.. release date: 2024-09-06
+.. section: macOS
+
+Updated macOS installer build to use OpenSSL 3.0.15.
+
+..
+
+.. date: 2024-09-04-09-59-18
+.. gh-issue: 123418
+.. nonce: QaMC12
+.. section: Windows
+
+Updated Windows build to use OpenSSL 3.0.15.
+
+..
+
+.. date: 2024-08-01-10-55-15
+.. gh-issue: 122573
+.. nonce: 4-UCFY
+.. section: Windows
+
+The Windows build of CPython now requires 3.10 or newer.
+
+..
+
+.. date: 2024-07-19-21-50-54
+.. gh-issue: 100256
+.. nonce: GDrKba
+.. section: Windows
+
+:mod:`mimetypes` no longer fails when it encounters an inaccessible registry
+key.
+
+..
+
+.. date: 2022-04-20-18-32-30
+.. gh-issue: 79846
+.. nonce: Vggv3f
+.. section: Windows
+
+Makes :code:`ssl.create_default_context()` ignore invalid certificates in
+the Windows certificate store
+
+..
+
+.. date: 2024-09-04-10-07-51
+.. gh-issue: 123418
+.. nonce: 1eIFZb
+.. section: Tools/Demos
+
+Update GitHub CI workflows to use OpenSSL 3.0.15 and multissltests to use
+3.0.15, 3.1.7, and 3.2.3.
+
+..
+
+.. date: 2024-05-29-15-28-08
+.. gh-issue: 119727
+.. nonce: dVkaZM
+.. section: Tests
+
+Add ``--single-process`` command line option to Python test runner
+(regrtest). Patch by Victor Stinner.
+
+..
+
+.. date: 2024-05-04-22-56-41
+.. gh-issue: 101525
+.. nonce: LHK166
+.. section: Tests
+
+Skip ``test_gdb`` if the binary is relocated by BOLT. Patch by Donghee Na.
+
+..
+
+.. date: 2024-09-04-12-41-35
+.. gh-issue: 123678
+.. nonce: N41y9n
+.. section: Security
+
+Upgrade libexpat to 2.6.3
+
+..
+
+.. date: 2024-07-02-13-39-20
+.. gh-issue: 121285
+.. nonce: hrl-yI
+.. section: Security
+
+Remove backtracking from tarfile header parsing for ``hdrcharset``, PAX, and
+GNU sparse headers.
+
+..
+
+.. date: 2024-09-04-18-23-43
+.. gh-issue: 123657
+.. nonce: Oks4So
+.. section: Library
+
+Fix crash and memory leak in :func:`decimal.getcontext`. It crashed when
+using a thread-local context by ``--with-decimal-contextvar=no``.
+
+..
+
+.. date: 2024-08-28-20-08-19
+.. gh-issue: 123448
+.. nonce: tItJlp
+.. section: Library
+
+Fixed memory leak of :class:`typing.NoDefault` by moving it to the static
+types array.
+
+..
+
+.. date: 2024-08-28-13-03-36
+.. gh-issue: 123409
+.. nonce: lW0YF-
+.. section: Library
+
+Fix :attr:`ipaddress.IPv6Address.reverse_pointer` output according to
+:rfc:`RFC 3596, §2.5 <3596#section-2.5>`.  Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-08-26-13-45-20
+.. gh-issue: 123270
+.. nonce: gXHvNJ
+.. section: Library
+
+Applied a more surgical fix for malformed payloads in :class:`zipfile.Path`
+causing infinite loops (gh-122905) without breaking contents using
+legitimate characters.
+
+..
+
+.. date: 2024-08-24-06-05-41
+.. gh-issue: 123228
+.. nonce: jR_5O5
+.. section: Library
+
+Fix return type for
+:func:`!_pyrepl.readline._ReadlineWrapper.get_line_buffer` to be
+:func:`str`.  Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-08-24-00-03-01
+.. gh-issue: 123240
+.. nonce: uFPG3l
+.. section: Library
+
+Raise audit events for the :func:`input` in the new REPL.
+
+..
+
+.. date: 2024-08-22-20-10-13
+.. gh-issue: 123243
+.. nonce: Kifj1L
+.. section: Library
+
+Fix memory leak in :mod:`!_decimal`.
+
+..
+
+.. date: 2024-08-22-11-25-19
+.. gh-issue: 122546
+.. nonce: BSmeE7
+.. section: Library
+
+Consistently use same file name for different exceptions in the new repl.
+Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-08-22-09-37-48
+.. gh-issue: 123213
+.. nonce: owmXnP
+.. section: Library
+
+:meth:`xml.etree.ElementTree.Element.extend` and
+:class:`~xml.etree.ElementTree.Element` assignment no longer hide the
+internal exception if an erronous generator is passed. Patch by Bar Harel.
+
+..
+
+.. date: 2024-08-20-18-02-27
+.. gh-issue: 85110
+.. nonce: 8_iDQy
+.. section: Library
+
+Preserve relative path in URL without netloc in
+:func:`urllib.parse.urlunsplit` and :func:`urllib.parse.urlunparse`.
+
+..
+
+.. date: 2024-08-16-19-13-21
+.. gh-issue: 123067
+.. nonce: Nx9O4R
+.. section: Library
+
+Fix quadratic complexity in parsing ``"``-quoted cookie values with
+backslashes by :mod:`http.cookies`.
+
+..
+
+.. date: 2024-08-14-10-41-11
+.. gh-issue: 122981
+.. nonce: BHV0Z9
+.. section: Library
+
+Fix :func:`inspect.getsource` for generated classes with Python base classes
+(e.g. enums).
+
+..
+
+.. date: 2024-08-11-14-23-07
+.. gh-issue: 122903
+.. nonce: xktZta
+.. section: Library
+
+``zipfile.Path.glob`` now correctly matches directories instead of silently
+omitting them.
+
+..
+
+.. date: 2024-08-11-14-08-04
+.. gh-issue: 122905
+.. nonce: 7tDsxA
+.. section: Library
+
+:class:`zipfile.Path` objects now sanitize names from the zipfile.
+
+..
+
+.. date: 2024-08-08-15-05-58
+.. gh-issue: 122695
+.. nonce: f7pwBv
+.. section: Library
+
+Fixed double-free when using :func:`gc.get_referents` with a freed
+:class:`asyncio.Future` iterator.
+
+..
+
+.. date: 2024-08-07-17-41-16
+.. gh-issue: 116263
+.. nonce: EcXir0
+.. section: Library
+
+:class:`logging.handlers.RotatingFileHandler` no longer rolls over empty log
+files.
+
+..
+
+.. date: 2024-08-07-14-12-19
+.. gh-issue: 105376
+.. nonce: QbGPdE
+.. section: Library
+
+Restore the deprecated :mod:`logging` ``warn()`` method. It was removed in
+Python 3.13 alpha 1. Keep the deprecated ``warn()`` method in Python 3.13.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2024-08-06-18-07-19
+.. gh-issue: 122744
+.. nonce: kCzNDI
+.. section: Library
+
+Bump the version of pip bundled in ensurepip to version 24.2.
+
+..
+
+.. date: 2024-08-04-14-07-18
+.. gh-issue: 118814
+.. nonce: uiyks1
+.. section: Library
+
+Fix the :class:`typing.TypeVar` constructor when name is passed by keyword.
+
+..
+
+.. date: 2024-07-31-20-43-21
+.. gh-issue: 122478
+.. nonce: sCU2Le
+.. section: Library
+
+Remove internal frames from tracebacks shown in
+:class:`code.InteractiveInterpreter` with non-default
+:func:`sys.excepthook`. Save correct tracebacks in
+:attr:`sys.last_traceback` and update ``__traceback__`` attribute of
+:attr:`sys.last_value` and :attr:`sys.last_exc`.
+
+..
+
+.. date: 2024-07-31-15-08-42
+.. gh-issue: 116622
+.. nonce: aKxIQA
+.. section: Library
+
+On Android, the ``FICLONE`` and ``FICLONERANGE`` constants are no longer
+exposed by :mod:`fcntl`, as these ioctls are blocked by SELinux.
+
+..
+
+.. date: 2024-07-31-14-55-41
+.. gh-issue: 82378
+.. nonce: eZvYmR
+.. section: Library
+
+Make sure that the new :term:`REPL` interprets :data:`sys.tracebacklimit` in
+the same way that the classic REPL did.
+
+..
+
+.. date: 2024-07-30-21-29-30
+.. gh-issue: 122334
+.. nonce: LeoE1x
+.. section: Library
+
+Fix crash when importing :mod:`ssl` after the main interpreter restarts.
+
+..
+
+.. date: 2024-07-30-14-46-16
+.. gh-issue: 87320
+.. nonce: -Yk1wb
+.. section: Library
+
+In :class:`code.InteractiveInterpreter`, handle exceptions caused by calling
+a non-default :func:`sys.excepthook`. Before, the exception bubbled up to
+the caller, ending the :term:`REPL`.
+
+..
+
+.. date: 2024-07-27-16-10-41
+.. gh-issue: 121650
+.. nonce: nf6oc9
+.. section: Library
+
+:mod:`email` headers with embedded newlines are now quoted on output. The
+:mod:`~email.generator` will now refuse to serialize (write) headers that
+are unsafely folded or delimited; see
+:attr:`~email.policy.Policy.verify_generated_headers`. (Contributed by Bas
+Bloemsaat and Petr Viktorin in :gh:`121650`.)
+
+..
+
+.. date: 2024-07-23-10-59-38
+.. gh-issue: 121723
+.. nonce: iJEf7e
+.. section: Library
+
+Make :func:`logging.config.dictConfig` accept any object implementing the
+Queue public API. See the :ref:`queue configuration <configure-queue>`
+section for details. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-07-21-10-45-24
+.. gh-issue: 122081
+.. nonce: dNrYMq
+.. section: Library
+
+Fix a crash in the :func:`!decimal.IEEEContext` optional function available
+via the ``EXTRA_FUNCTIONALITY`` configuration flag.
+
+..
+
+.. date: 2024-07-16-20-49-07
+.. gh-issue: 121804
+.. nonce: gYN-In
+.. section: Library
+
+Correctly show error locations, when :exc:`SyntaxError` raised in new repl.
+Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-06-29-15-23-26
+.. gh-issue: 121151
+.. nonce: HeLEvq
+.. section: Library
+
+Fix wrapping of long usage text of arguments inside a mutually exclusive
+group in :mod:`argparse`.
+
+..
+
+.. date: 2023-12-12-15-19-58
+.. gh-issue: 108172
+.. nonce: KyDPuG
+.. section: Library
+
+``webbrowser`` honors OS preferred browser on Linux when its desktop entry
+name contains the text of a known browser name.
+
+..
+
+.. date: 2023-09-19-17-56-24
+.. gh-issue: 109109
+.. nonce: WJvvX2
+.. section: Library
+
+You can now get the raw TLS certificate chains from TLS connections via
+:meth:`ssl.SSLSocket.get_verified_chain` and
+:meth:`ssl.SSLSocket.get_unverified_chain` methods.
+
+Contributed by Mateusz Nowak.
+
+..
+
+.. date: 2024-06-16-21-42-45
+.. gh-issue: 120083
+.. nonce: nczuyv
+.. section: IDLE
+
+Add explicit black IDLE Hovertip foreground color needed for recent macOS.
+Fixes Sonoma showing unreadable white on pale yellow.  Patch by John
+Riggles.
+
+..
+
+.. date: 2024-09-06-19-23-44
+.. gh-issue: 120221
+.. nonce: giJEDT
+.. section: Core and Builtins
+
+asyncio REPL is now again properly recognizing KeyboardInterrupts. Display
+of exceptions raised in secondary threads is fixed.
+
+..
+
+.. date: 2024-09-06-14-13-01
+.. gh-issue: 119310
+.. nonce: WQxyDF
+.. section: Core and Builtins
+
+Allow the new interactive shell to read history files written with the
+editline library that use unicode-escaped entries.  Patch by aorcajo and
+Łukasz Langa.
+
+..
+
+.. date: 2024-09-03-13-34-35
+.. gh-issue: 123572
+.. nonce: uuqoYV
+.. section: Core and Builtins
+
+Fix key mappings for various F-keys in Windows for the new REPL. Patch by
+devdanzin
+
+..
+
+.. date: 2024-09-02-17-32-15
+.. gh-issue: 119034
+.. nonce: HYh5Vj
+.. section: Core and Builtins
+
+Change ``<page up>`` and ``<page down>`` keys of the Python REPL to history
+search forward/backward. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-09-01-00-02-05
+.. gh-issue: 123545
+.. nonce: 8nQNbL
+.. section: Core and Builtins
+
+Fix a double decref in rare cases on experimental JIT builds.
+
+..
+
+.. date: 2024-08-29-19-46-07
+.. gh-issue: 123484
+.. nonce: rjUn_F
+.. section: Core and Builtins
+
+Fix ``_Py_DebugOffsets`` for long objects to be relative to the start of the
+object rather than the start of a subobject.
+
+..
+
+.. date: 2024-08-27-13-16-40
+.. gh-issue: 123344
+.. nonce: 56Or78
+.. section: Core and Builtins
+
+Add AST optimizations for type parameter defaults.
+
+..
+
+.. date: 2024-08-26-00-58-26
+.. gh-issue: 123321
+.. nonce: ApxcnE
+.. section: Core and Builtins
+
+Prevent Parser/myreadline race condition from segfaulting on multi-threaded
+use. Patch by Bar Harel and Amit Wienner.
+
+..
+
+.. date: 2024-08-25-18-27-49
+.. gh-issue: 123177
+.. nonce: yLuyqE
+.. section: Core and Builtins
+
+Fix a bug causing stray prompts to appear in the middle of wrapped lines in
+the new REPL.
+
+..
+
+.. date: 2024-08-25-10-54-22
+.. gh-issue: 122982
+.. nonce: KLD91q
+.. section: Core and Builtins
+
+Extend the deprecation period for bool inversion (``~``) by two years.
+
+..
+
+.. date: 2024-08-23-18-31-10
+.. gh-issue: 123275
+.. nonce: DprIrj
+.. section: Core and Builtins
+
+Support :option:`-X gil=1 <-X>` and :envvar:`PYTHON_GIL=1 <PYTHON_GIL>` on
+non-free-threaded builds.
+
+..
+
+.. date: 2024-08-23-15-59-54
+.. gh-issue: 123177
+.. nonce: OLcaC5
+.. section: Core and Builtins
+
+Deactivate line wrap in the Apple Terminal via a ANSI escape code. Patch by
+Pablo Galindo
+
+..
+
+.. date: 2024-08-23-13-08-27
+.. gh-issue: 123229
+.. nonce: aHm-dw
+.. section: Core and Builtins
+
+Fix valgrind warning by initializing the f-string buffers to 0 in the
+tokenizer. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-08-23-11-26-54
+.. gh-issue: 122298
+.. nonce: ZMyln4
+.. section: Core and Builtins
+
+Restore printout of GC stats when ``gc.set_debug(gc.DEBUG_STATS)`` is
+called. This featue was accidentally removed when implementing incremental
+GC.
+
+..
+
+.. date: 2024-08-21-15-22-53
+.. gh-issue: 121804
+.. nonce: r5K3PS
+.. section: Core and Builtins
+
+Correctly show error locations when a :exc:`SyntaxError` is raised in the
+basic REPL. Patch by Sergey B Kirpichev.
+
+..
+
+.. date: 2024-08-20-12-29-52
+.. gh-issue: 123142
+.. nonce: 3PXiNb
+.. section: Core and Builtins
+
+Fix too-wide source location in exception tracebacks coming from broken
+iterables in comprehensions.
+
+..
+
+.. date: 2024-08-20-11-09-16
+.. gh-issue: 123048
+.. nonce: 2TISpv
+.. section: Core and Builtins
+
+Fix a bug where pattern matching code could emit a :opcode:`JUMP_FORWARD`
+with no source location.
+
+..
+
+.. date: 2024-08-18-18-25-54
+.. gh-issue: 123123
+.. nonce: 0ZcaEB
+.. section: Core and Builtins
+
+Fix displaying :exc:`SyntaxError` exceptions covering multiple lines. Patch
+by Pablo Galindo
+
+..
+
+.. date: 2024-08-17-17-26-25
+.. gh-issue: 123083
+.. nonce: 9xWLJ-
+.. section: Core and Builtins
+
+Fix a potential use-after-free in ``STORE_ATTR_WITH_HINT``.
+
+..
+
+.. date: 2024-08-15-19-28-43
+.. gh-issue: 123022
+.. nonce: m3EF9E
+.. section: Core and Builtins
+
+Fix crash in free-threaded build when calling :c:func:`Py_Initialize` from a
+non-main thread.
+
+..
+
+.. date: 2024-08-10-12-44-03
+.. gh-issue: 122888
+.. nonce: TUyu9r
+.. section: Core and Builtins
+
+Fix crash on certain calls to ``str()`` with positional arguments of the
+wrong type. Patch by Jelle Zijlstra.
+
+..
+
+.. date: 2024-08-05-19-04-06
+.. gh-issue: 116622
+.. nonce: 3LWUzE
+.. section: Core and Builtins
+
+Fix Android stdout and stderr messages being truncated or lost.
+
+..
+
+.. date: 2024-08-01-19-13-58
+.. gh-issue: 122527
+.. nonce: eztso6
+.. section: Core and Builtins
+
+Fix a crash that occurred when a ``PyStructSequence`` was deallocated after
+its type's dictionary was cleared by the GC.  The type's
+:c:member:`~PyTypeObject.tp_basicsize` now accounts for non-sequence fields
+that aren't included in the :c:macro:`Py_SIZE` of the sequence.
+
+..
+
+.. date: 2024-07-30-11-41-35
+.. gh-issue: 122445
+.. nonce: Rq0bjS
+.. section: Core and Builtins
+
+Add only fields which are modified via self.* to
+:attr:`~type.__static_attributes__`.
+
+..
+
+.. date: 2024-06-19-21-34-21
+.. gh-issue: 98442
+.. nonce: cqhjkN
+.. section: Core and Builtins
+
+Fix too wide source locations of the cleanup instructions of a with
+statement.
+
+..
+
+.. date: 2024-06-05-18-29-18
+.. gh-issue: 93691
+.. nonce: 6OautB
+.. section: Core and Builtins
+
+Fix source locations of instructions generated for with statements.
+
+..
+
+.. date: 2024-06-05-10-32-44
+.. gh-issue: 120097
+.. nonce: 9S2klk
+.. section: Core and Builtins
+
+``FrameLocalsProxy`` now subclasses ``collections.abc.Mapping`` and can be
+matched as a mapping in ``match`` statements
+
+..
+
+.. date: 2024-08-06-14-23-11
+.. gh-issue: 122728
+.. nonce: l-fQ-v
+.. section: C API
+
+Fix :c:func:`PyEval_GetLocals` to avoid :exc:`SystemError` ("bad argument to
+internal function"). Patch by Victor Stinner.
+
+..
+
+.. date: 2024-09-04-12-01-43
+.. gh-issue: 123418
+.. nonce: ynzspB
+.. section: Build
+
+Updated Android build to use OpenSSL 3.0.15.
+
+..
+
+.. date: 2024-08-24-19-09-31
+.. gh-issue: 123297
+.. nonce: fdtXoe
+.. section: Build
+
+Propagate the value of ``LDFLAGS`` to ``LDCXXSHARED`` in :mod:`sysconfig`.
+Patch by Pablo Galindo
+
+..
+
+.. date: 2024-08-07-00-20-18
+.. gh-issue: 116622
+.. nonce: U9cxHM
+.. section: Build
+
+Rename build variable ``MODULE_LDFLAGS`` back to ``LIBPYTHON``, as it's used
+by package build systems (e.g. Meson).
+
+..
+
+.. date: 2024-08-02-12-59-15
+.. gh-issue: 118943
+.. nonce: vZQtET
+.. section: Build
+
+Fix an issue where the experimental JIT could be built several times by the
+``make regen-all`` target, leading to possible race conditions on heavily
+parallelized builds.
+
+..
+
+.. date: 2024-06-18-15-28-25
+.. gh-issue: 118943
+.. nonce: aie7nn
+.. section: Build
+
+Fix a possible race condition affecting parallel builds configured with
+``--enable-experimental-jit``, in which :exc:`FileNotFoundError` could be
+caused by another process already moving ``jit_stencils.h.new`` to
+``jit_stencils.h``.
diff --git a/Misc/NEWS.d/3.13.0rc3.rst b/Misc/NEWS.d/3.13.0rc3.rst
new file mode 100644
index 00000000000000..974e8d99bef5f5
--- /dev/null
+++ b/Misc/NEWS.d/3.13.0rc3.rst
@@ -0,0 +1,397 @@
+.. date: 2024-09-07-12-14-54
+.. gh-issue: 123797
+.. nonce: yFDeug
+.. release date: 2024-10-01
+.. section: macOS
+
+Check for runtime availability of ``ptsname_r`` function on macos.
+
+..
+
+.. date: 2024-09-27-13-40-25
+.. gh-issue: 124609
+.. nonce: WaKk8G
+.. section: Windows
+
+Fix ``_Py_ThreadId`` for Windows builds using MinGW. Patch by Tony Roberts.
+
+..
+
+.. date: 2024-09-20-11-18-50
+.. gh-issue: 124254
+.. nonce: iPin-L
+.. section: Windows
+
+Ensures experimental free-threaded binaries remain installed when updating.
+
+..
+
+.. date: 2024-09-10-19-23-00
+.. gh-issue: 123915
+.. nonce: yZMEDO
+.. section: Windows
+
+Ensure that ``Tools\msi\buildrelease.bat`` uses different directories for
+AMD64 and ARM64 builds.
+
+..
+
+.. date: 2024-09-25-12-39-34
+.. gh-issue: 124378
+.. nonce: Ywwgia
+.. section: Tests
+
+Updated ``test_ttk`` to pass with Tcl/Tk 8.6.15.
+
+..
+
+.. date: 2024-09-25-18-34-48
+.. gh-issue: 124538
+.. nonce: nXZk4R
+.. section: Library
+
+Fixed crash when using :func:`gc.get_referents` on a capsule object.
+
+..
+
+.. date: 2024-09-25-12-14-58
+.. gh-issue: 124498
+.. nonce: Ozxs55
+.. section: Library
+
+Fix :class:`typing.TypeAliasType` not to be generic, when ``type_params`` is
+an empty tuple.
+
+..
+
+.. date: 2024-09-24-21-15-27
+.. gh-issue: 123017
+.. nonce: dSAr2f
+.. section: Library
+
+Due to unreliable results on some devices, :func:`time.strftime` no longer
+accepts negative years on Android.
+
+..
+
+.. date: 2024-09-24-19-32-14
+.. gh-issue: 123014
+.. nonce: zVcfkZ
+.. section: Library
+
+:func:`os.pidfd_open` and :func:`signal.pidfd_send_signal` are now
+unavailable when building against Android API levels older than 31, since
+the underlying system calls may cause a crash.
+
+..
+
+.. date: 2024-09-19-11-47-39
+.. gh-issue: 124248
+.. nonce: g7rufd
+.. section: Library
+
+Fixed potential crash when using :mod:`struct` to process zero-width 'Pascal
+string' fields (``0p``).
+
+..
+
+.. date: 2024-09-19-03-46-59
+.. gh-issue: 87041
+.. nonce: 9Ox7Bv
+.. section: Library
+
+Fix a bug in :mod:`argparse` where lengthy subparser argument help is
+incorrectly indented.
+
+..
+
+.. date: 2024-09-18-17-45-52
+.. gh-issue: 124212
+.. nonce: n6kIby
+.. section: Library
+
+Fix invalid variable in :mod:`venv` handling of failed symlink on Windows
+
+..
+
+.. date: 2024-09-17-18-06-42
+.. gh-issue: 124171
+.. nonce: PHCvRJ
+.. section: Library
+
+Add workaround for broken :c:func:`!fmod()` implementations on Windows, that
+loose zero sign (e.g. ``fmod(-10, 1)`` returns ``0.0``).  Patch by Sergey B
+Kirpichev.
+
+..
+
+.. date: 2024-09-13-10-34-19
+.. gh-issue: 123934
+.. nonce: yMe7mL
+.. section: Library
+
+Fix :class:`unittest.mock.MagicMock` reseting magic methods return values
+after ``.reset_mock(return_value=True)`` was called.
+
+..
+
+.. date: 2024-09-11-19-12-23
+.. gh-issue: 123968
+.. nonce: OwHON_
+.. section: Library
+
+Fix the command-line interface for the :mod:`random` module to select floats
+between 0 and N, not 1 and N.
+
+..
+
+.. date: 2024-09-10-11-26-14
+.. gh-issue: 123892
+.. nonce: 2gzIrz
+.. section: Library
+
+Add ``"_wmi"`` to :data:`sys.stdlib_module_names`. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-09-02-20-34-04
+.. gh-issue: 123339
+.. nonce: czgcSu
+.. section: Library
+
+Fix :func:`inspect.getsource` for classes in :mod:`collections.abc` and
+:mod:`decimal` (for pure Python implementation) modules.
+:func:`inspect.getcomments` now raises OSError instead of IndexError if the
+``__firstlineno__`` value for a class is out of bound.
+
+..
+
+.. date: 2024-08-15-09-45-34
+.. gh-issue: 121735
+.. nonce: _1q0qf
+.. section: Library
+
+When working with zip archives, importlib.resources now properly honors
+module-adjacent references (e.g. ``files(pkg.mod)`` and not just
+``files(pkg)``).
+
+..
+
+.. date: 2024-07-23-12-38-14
+.. gh-issue: 122145
+.. nonce: sTO8nX
+.. section: Library
+
+Fix an issue when reporting tracebacks corresponding to Python code emitting
+an empty AST body. Patch by Nikita Sobolev and Bénédikt Tran.
+
+..
+
+.. date: 2024-07-03-14-23-04
+.. gh-issue: 119004
+.. nonce: L5MoUu
+.. section: Library
+
+Fix a crash in :ref:`OrderedDict.__eq__ <collections_OrderedDict__eq__>`
+when operands are mutated during the check. Patch by Bénédikt Tran.
+
+..
+
+.. bpo: 44864
+.. date: 2021-08-24-19-37-46
+.. nonce: KzxaDh
+.. section: Library
+
+Do not translate user-provided strings in :class:`argparse.ArgumentParser`.
+
+..
+
+.. date: 2024-09-21-23-12-18
+.. gh-issue: 112938
+.. nonce: OeiDru
+.. section: IDLE
+
+Fix uninteruptable hang when Shell gets rapid continuous output.
+
+..
+
+.. date: 2024-06-05-14-54-24
+.. gh-issue: 120104
+.. nonce: j_thj4
+.. section: IDLE
+
+Fix padding in config and search dialog windows in IDLE.
+
+..
+
+.. date: 2024-09-27-16-47-48
+.. gh-issue: 124720
+.. nonce: nVSTVb
+.. section: Documentation
+
+Update "Using Python on a Mac" section of the "Python Setup and Usage"
+document and include information on installing free-threading support.
+
+..
+
+.. date: 2024-09-19-19-33-25
+.. gh-issue: 116622
+.. nonce: M65UZ6
+.. section: Documentation
+
+Add an Android platform guide, and flag modules not available on Android.
+
+..
+
+.. date: 2024-09-30-21-02-10
+.. gh-issue: 124567
+.. nonce: tv_B_C
+.. section: Core and Builtins
+
+Revert the incremental GC (in 3.13), since it's not clear the benefits
+outweigh the costs at this point.
+
+..
+
+.. date: 2024-09-27-17-18-53
+.. gh-issue: 124642
+.. nonce: OCjhBJ
+.. section: Core and Builtins
+
+Fixed scalability issue in free-threaded builds for lock-free reads from
+dictionaries in multi-threaded scenarios
+
+..
+
+.. date: 2024-09-26-17-55-34
+.. gh-issue: 116510
+.. nonce: dhn8w8
+.. section: Core and Builtins
+
+Fix a bug that can cause a crash when sub-interpreters use "basic"
+single-phase extension modules.  Shared objects could refer to PyGC_Head
+nodes that had been freed as part of interpreter cleanup.
+
+..
+
+.. date: 2024-09-26-12-19-13
+.. gh-issue: 124547
+.. nonce: P_SHfU
+.. section: Core and Builtins
+
+When deallocating an object with inline values whose ``__dict__`` is still
+live: if memory allocation for the inline values fails, clear the
+dictionary. Prevents an interpreter crash.
+
+..
+
+.. date: 2024-09-25-14-45-56
+.. gh-issue: 124513
+.. nonce: ywiXtr
+.. section: Core and Builtins
+
+Fix a crash in FrameLocalsProxy constructor: check the number of arguments.
+Patch by Victor Stinner.
+
+..
+
+.. date: 2024-09-25-11-53-22
+.. gh-issue: 124442
+.. nonce: EXC1Ve
+.. section: Core and Builtins
+
+Fix nondeterminism in compilation by sorting the value of
+:attr:`~type.__static_attributes__`. Patch by kp2pml30.
+
+..
+
+.. date: 2024-09-23-15-23-14
+.. gh-issue: 123856
+.. nonce: yrgJ9m
+.. section: Core and Builtins
+
+Fix PyREPL failure when a keyboard interrupt is triggered after using a
+history search
+
+..
+
+.. date: 2024-09-23-13-25-27
+.. gh-issue: 65961
+.. nonce: LDqXV2
+.. section: Core and Builtins
+
+Document the deprecation of setting and using ``__package__`` and
+``__cached__``.
+
+..
+
+.. date: 2024-09-13-02-25-06
+.. gh-issue: 124027
+.. nonce: to_9DY
+.. section: Core and Builtins
+
+Support ``<page up>``, ``<page down>``, and ``<delete>`` keys in the Python
+REPL when ``$TERM`` is set to ``vt100``.
+
+..
+
+.. date: 2024-09-10-13-27-16
+.. gh-issue: 77894
+.. nonce: ZC-Olu
+.. section: Core and Builtins
+
+Fix possible crash in the garbage collector when it tries to break a
+reference loop containing a :class:`memoryview` object. Now a
+:class:`!memoryview` object can only be cleared if there are no buffers that
+refer it.
+
+..
+
+.. date: 2024-09-02-20-36-45
+.. gh-issue: 123339
+.. nonce: QcmpSs
+.. section: Core and Builtins
+
+Setting the :attr:`!__module__` attribute for a class now removes the
+``__firstlineno__`` item from the type's dict, so they will no longer be
+inconsistent.
+
+..
+
+.. date: 2024-09-18-18-40-30
+.. gh-issue: 124160
+.. nonce: Zy-VKi
+.. section: C API
+
+Fix crash when importing modules containing state and single-phase
+initialization in a subinterpreter.
+
+..
+
+.. date: 2024-09-12-16-16-24
+.. gh-issue: 123880
+.. nonce: 2-8vcj
+.. section: C API
+
+Fixed a bug that prevented circular imports of extension modules that use
+single-phase initialization.
+
+..
+
+.. date: 2024-09-27-15-58-10
+.. gh-issue: 124487
+.. nonce: PAZTQf
+.. section: Build
+
+Windows builds now use Windows 8.1 as their API baseline (installation
+already required Windows 8.1).
+
+..
+
+.. date: 2024-09-13-17-48-37
+.. gh-issue: 124043
+.. nonce: Bruxpq
+.. section: Build
+
+Building using :option:`--with-trace-refs` is (temporarily) disallowed when
+the GIL is disabled.
diff --git a/Misc/NEWS.d/3.13.1.rst b/Misc/NEWS.d/3.13.1.rst
new file mode 100644
index 00000000000000..98bea5ae95d994
--- /dev/null
+++ b/Misc/NEWS.d/3.13.1.rst
@@ -0,0 +1,1882 @@
+.. date: 2024-09-24-10-48-46
+.. gh-issue: 124448
+.. nonce: bFMrS6
+.. release date: 2024-12-03
+.. section: macOS
+
+Update bundled Tcl/Tk in macOS installer to 8.6.15.
+
+..
+
+.. date: 2024-11-16-22-08-41
+.. gh-issue: 126911
+.. nonce: HchCZZ
+.. section: Windows
+
+Update credits command output.
+
+..
+
+.. date: 2024-11-12-22-31-13
+.. gh-issue: 118973
+.. nonce: _lfxW6
+.. section: Windows
+
+Ensures the experimental free-threaded install includes the ``_tkinter``
+module. The optional Tcl/Tk component must also be installed in order for
+the module to work.
+
+..
+
+.. date: 2024-11-07-20-42-31
+.. gh-issue: 126497
+.. nonce: EARpd-
+.. section: Windows
+
+Fixes venv failure due to missing redirector executables in experimental
+free-threaded installs.
+
+..
+
+.. date: 2024-10-29-20-09-52
+.. gh-issue: 126074
+.. nonce: 83ZzZs
+.. section: Windows
+
+Removed unnecessary DLLs from Windows embeddable package
+
+..
+
+.. date: 2024-10-29-19-48-03
+.. gh-issue: 125315
+.. nonce: jdB9qN
+.. section: Windows
+
+Avoid crashing in :mod:`platform` due to slow WMI calls on some Windows
+machines.
+
+..
+
+.. date: 2024-10-29-09-39-06
+.. gh-issue: 126084
+.. nonce: 3wAL8o
+.. section: Windows
+
+Fix venvwlauncher to launch pythonw instead of python so no extra console
+window is created.
+
+..
+
+.. date: 2024-10-23-17-24-23
+.. gh-issue: 125842
+.. nonce: m3EF9E
+.. section: Windows
+
+Fix a :exc:`SystemError` when :func:`sys.exit` is called with ``0xffffffff``
+on Windows.
+
+..
+
+.. date: 2024-10-15-21-28-43
+.. gh-issue: 125550
+.. nonce: hmGWCP
+.. section: Windows
+
+Enable the :ref:`launcher` to detect Python 3.14 installs from the Windows
+Store.
+
+..
+
+.. date: 2024-09-24-19-04-56
+.. gh-issue: 124448
+.. nonce: srVT3d
+.. section: Windows
+
+Updated bundled Tcl/Tk to 8.6.15.
+
+..
+
+.. date: 2024-11-13-22-23-36
+.. gh-issue: 126807
+.. nonce: vpaWuN
+.. section: Tools/Demos
+
+Fix extraction warnings in :program:`pygettext.py` caused by mistaking
+function definitions for function calls.
+
+..
+
+.. date: 2024-10-30-13-59-07
+.. gh-issue: 126167
+.. nonce: j5cCWE
+.. section: Tools/Demos
+
+The iOS testbed was modified so that it can be used by third-party projects
+for testing purposes.
+
+..
+
+.. date: 2024-11-17-16-56-48
+.. gh-issue: 126909
+.. nonce: 60VTxW
+.. section: Tests
+
+Fix test_os extended attribute tests to work on filesystems with 1 KiB xattr
+size limit.
+
+..
+
+.. date: 2024-10-07-14-13-38
+.. gh-issue: 125041
+.. nonce: PKLWDf
+.. section: Tests
+
+Re-enable skipped tests for :mod:`zlib` on the s390x architecture: only skip
+checks of the compressed bytes, which can be different between zlib's
+software implementation and the hardware-accelerated implementation.
+
+..
+
+.. date: 2024-09-30-22-52-44
+.. gh-issue: 124295
+.. nonce: VZy5kx
+.. section: Tests
+
+Add translation tests to the :mod:`argparse` module.
+
+..
+
+.. date: 2024-11-13-11-09-12
+.. gh-issue: 126623
+.. nonce: TO7NnR
+.. section: Security
+
+Upgrade libexpat to 2.6.4
+
+..
+
+.. date: 2024-10-09-20-08-13
+.. gh-issue: 125140
+.. nonce: YgNWRB
+.. section: Security
+
+Remove the current directory from ``sys.path`` when using PyREPL.
+
+..
+
+.. date: 2024-08-07-10-42-13
+.. gh-issue: 122792
+.. nonce: oiTMo9
+.. section: Security
+
+Changed IPv4-mapped ``ipaddress.IPv6Address`` to consistently use the mapped
+IPv4 address value for deciding properties. Properties which have their
+behavior fixed are ``is_multicast``, ``is_reserved``, ``is_link_local``,
+``is_global``, and ``is_unspecified``.
+
+..
+
+.. date: 2024-11-30-21-46-15
+.. gh-issue: 127321
+.. nonce: M78fBv
+.. section: Library
+
+:func:`pdb.set_trace` will not stop at an opcode that does not have an
+associated line number anymore.
+
+..
+
+.. date: 2024-11-27-16-06-10
+.. gh-issue: 127303
+.. nonce: asqkgh
+.. section: Library
+
+Publicly expose :data:`~token.EXACT_TOKEN_TYPES` in :attr:`!token.__all__`.
+
+..
+
+.. date: 2024-11-27-14-06-35
+.. gh-issue: 123967
+.. nonce: wxUmnW
+.. section: Library
+
+Fix faulthandler for trampoline frames. If the top-most frame is a
+trampoline frame, skip it. Patch by Victor Stinner.
+
+..
+
+.. date: 2024-11-24-14-20-17
+.. gh-issue: 127182
+.. nonce: WmfY2g
+.. section: Library
+
+Fix :meth:`!io.StringIO.__setstate__` crash, when :const:`None` was passed
+as the first value.
+
+..
+
+.. date: 2024-11-24-12-41-31
+.. gh-issue: 127217
+.. nonce: UAXGFr
+.. section: Library
+
+Fix :func:`urllib.request.pathname2url` for paths starting with multiple
+slashes on Posix.
+
+..
+
+.. date: 2024-11-22-10-42-34
+.. gh-issue: 127035
+.. nonce: UnbDlr
+.. section: Library
+
+Fix :mod:`shutil.which` on Windows. Now it looks at direct match if and only
+if the command ends with a PATHEXT extension or X_OK is not in mode. Support
+extensionless files if "." is in PATHEXT. Support PATHEXT extensions that
+end with a dot.
+
+..
+
+.. date: 2024-11-22-09-23-41
+.. gh-issue: 122273
+.. nonce: H8M6fd
+.. section: Library
+
+Support PyREPL history on Windows. Patch by devdanzin and Victor Stinner.
+
+..
+
+.. date: 2024-11-22-03-40-02
+.. gh-issue: 127078
+.. nonce: gI_PaP
+.. section: Library
+
+Fix issue where :func:`urllib.request.url2pathname` failed to discard an
+extra slash before a UNC drive in the URL path on Windows.
+
+..
+
+.. date: 2024-11-22-02-31-55
+.. gh-issue: 126766
+.. nonce: jfkhBH
+.. section: Library
+
+Fix issue where :func:`urllib.request.url2pathname` failed to discard any
+'localhost' authority present in the URL.
+
+..
+
+.. date: 2024-11-21-16-23-16
+.. gh-issue: 127065
+.. nonce: cfL1zd
+.. section: Library
+
+Fix crash when calling a :func:`operator.methodcaller` instance from
+multiple threads in the free threading build.
+
+..
+
+.. date: 2024-11-20-16-58-59
+.. gh-issue: 126997
+.. nonce: 0PI41Y
+.. section: Library
+
+Fix support of STRING and GLOBAL opcodes with non-ASCII arguments in
+:mod:`pickletools`. :func:`pickletools.dis` now outputs non-ASCII bytes in
+STRING, BINSTRING and SHORT_BINSTRING arguments as escaped (``\xXX``).
+
+..
+
+.. date: 2024-11-20-11-37-08
+.. gh-issue: 126316
+.. nonce: ElkZmE
+.. section: Library
+
+:mod:`grp`: Make :func:`grp.getgrall` thread-safe by adding a mutex. Patch
+by Victor Stinner.
+
+..
+
+.. date: 2024-11-20-08-54-11
+.. gh-issue: 126618
+.. nonce: ef_53g
+.. section: Library
+
+Fix the representation of :class:`itertools.count` objects when the count
+value is :data:`sys.maxsize`.
+
+..
+
+.. date: 2024-11-15-01-50-36
+.. gh-issue: 85168
+.. nonce: bP8VIN
+.. section: Library
+
+Fix issue where :func:`urllib.request.url2pathname` and
+:func:`~urllib.request.pathname2url` always used UTF-8 when quoting and
+unquoting file URIs. They now use the :term:`filesystem encoding and error
+handler`.
+
+..
+
+.. date: 2024-11-14-22-25-49
+.. gh-issue: 67877
+.. nonce: G9hw0w
+.. section: Library
+
+Fix memory leaks when :mod:`regular expression <re>` matching terminates
+abruptly, either because of a signal or because memory allocation fails.
+
+..
+
+.. date: 2024-11-13-22-25-57
+.. gh-issue: 126789
+.. nonce: lKzlc7
+.. section: Library
+
+Fixed the values of :py:func:`sysconfig.get_config_vars`,
+:py:func:`sysconfig.get_paths`, and their siblings when the :py:mod:`site`
+initialization happens after :py:mod:`sysconfig` has built a cache for
+:py:func:`sysconfig.get_config_vars`.
+
+..
+
+.. date: 2024-11-13-20-03-18
+.. gh-issue: 126188
+.. nonce: RJLKk-
+.. section: Library
+
+Update bundled pip to 24.3.1
+
+..
+
+.. date: 2024-11-13-19-15-18
+.. gh-issue: 126780
+.. nonce: ZZqJvI
+.. section: Library
+
+Fix :func:`os.path.normpath` for drive-relative paths on Windows.
+
+..
+
+.. date: 2024-11-12-21-43-12
+.. gh-issue: 126766
+.. nonce: oi2KJ7
+.. section: Library
+
+Fix issue where :func:`urllib.request.url2pathname` failed to discard two
+leading slashes introducing an empty authority section.
+
+..
+
+.. date: 2024-11-12-13-14-47
+.. gh-issue: 126727
+.. nonce: 5Eqfqd
+.. section: Library
+
+``locale.nl_langinfo(locale.ERA)`` now returns multiple era description
+segments separated by semicolons. Previously it only returned the first
+segment on platforms with Glibc.
+
+..
+
+.. date: 2024-11-11-13-24-22
+.. gh-issue: 126699
+.. nonce: ONGbMd
+.. section: Library
+
+Allow :class:`collections.abc.AsyncIterator` to be a base for Protocols.
+
+..
+
+.. date: 2024-11-11-13-00-21
+.. gh-issue: 126654
+.. nonce: 4gfP2y
+.. section: Library
+
+Fix crash when non-dict was passed to several functions in ``_interpreters``
+module.
+
+..
+
+.. date: 2024-11-10-18-14-51
+.. gh-issue: 104745
+.. nonce: zAa5Ke
+.. section: Library
+
+Limit starting a patcher (from :func:`unittest.mock.patch` or
+:func:`unittest.mock.patch.object`) more than once without stopping it
+
+..
+
+.. date: 2024-11-09-10-31-10
+.. gh-issue: 126595
+.. nonce: A-7MyC
+.. section: Library
+
+Fix a crash when instantiating :class:`itertools.count` with an initial
+count of :data:`sys.maxsize` on debug builds. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-11-08-17-05-10
+.. gh-issue: 120423
+.. nonce: 7rdLVV
+.. section: Library
+
+Fix issue where :func:`urllib.request.pathname2url` mishandled Windows paths
+with embedded forward slashes.
+
+..
+
+.. date: 2024-11-08-11-06-14
+.. gh-issue: 126565
+.. nonce: dFFO22
+.. section: Library
+
+Improve performances of :meth:`zipfile.Path.open` for non-reading modes.
+
+..
+
+.. date: 2024-11-07-22-41-47
+.. gh-issue: 126505
+.. nonce: iztYE1
+.. section: Library
+
+Fix bugs in compiling case-insensitive :mod:`regular expressions <re>` with
+character classes containing non-BMP characters: upper-case non-BMP
+character did was ignored and the ASCII flag was ignored when matching a
+character range whose upper bound is beyond the BMP region.
+
+..
+
+.. date: 2024-11-07-01-40-11
+.. gh-issue: 117378
+.. nonce: o9O5uM
+.. section: Library
+
+Fixed the :mod:`multiprocessing` ``"forkserver"`` start method forkserver
+process to correctly inherit the parent's :data:`sys.path` during the
+importing of :func:`multiprocessing.set_forkserver_preload` modules in the
+same manner as :data:`sys.path` is configured in workers before executing
+work items.
+
+This bug caused some forkserver module preloading to silently fail to
+preload. This manifested as a performance degration in child processes when
+the ``sys.path`` was required due to additional repeated work in every
+worker.
+
+It could also have a side effect of ``""`` remaining in :data:`sys.path`
+during forkserver preload imports instead of the absolute path from
+:func:`os.getcwd` at multiprocessing import time used in the worker
+``sys.path``.
+
+The ``sys.path`` differences between phases in the child process could
+potentially have caused preload to import incorrect things from the wrong
+location.  We are unaware of that actually having happened in practice.
+
+..
+
+.. date: 2024-11-06-23-40-28
+.. gh-issue: 125679
+.. nonce: Qq9xF5
+.. section: Library
+
+The :class:`multiprocessing.Lock` and :class:`multiprocessing.RLock`
+``repr`` values no longer say "unknown" on macOS.
+
+..
+
+.. date: 2024-11-06-18-30-50
+.. gh-issue: 126476
+.. nonce: F1wh3c
+.. section: Library
+
+Raise :class:`calendar.IllegalMonthError` (now a subclass of
+:class:`IndexError`) for :func:`calendar.month` when the input month is not
+correct.
+
+..
+
+.. date: 2024-11-06-13-41-38
+.. gh-issue: 126489
+.. nonce: toaf-0
+.. section: Library
+
+The Python implementation of :mod:`pickle` no longer calls
+:meth:`pickle.Pickler.persistent_id` for the result of
+:meth:`!persistent_id`.
+
+..
+
+.. date: 2024-11-03-09-42-42
+.. gh-issue: 126313
+.. nonce: EFP6Dl
+.. section: Library
+
+Fix an issue in :func:`curses.napms` when :func:`curses.initscr` has not yet
+been called. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-11-02-19-20-44
+.. gh-issue: 126303
+.. nonce: yVvyWB
+.. section: Library
+
+Fix pickling and copying of :class:`os.sched_param` objects.
+
+..
+
+.. date: 2024-11-01-14-31-41
+.. gh-issue: 126138
+.. nonce: yTniOG
+.. section: Library
+
+Fix a use-after-free crash on :class:`asyncio.Task` objects whose underlying
+coroutine yields an object that implements an evil
+:meth:`~object.__getattribute__`. Patch by Nico Posada.
+
+..
+
+.. date: 2024-10-31-14-06-28
+.. gh-issue: 126220
+.. nonce: uJAJCU
+.. section: Library
+
+Fix crash in :class:`!cProfile.Profile` and :class:`!_lsprof.Profiler` when
+their callbacks were directly called with 0 arguments.
+
+..
+
+.. date: 2024-10-30-23-59-36
+.. gh-issue: 126212
+.. nonce: _9uYjT
+.. section: Library
+
+Fix issue where :func:`urllib.request.pathname2url` and
+:func:`~urllib.request.url2pathname` removed slashes from Windows DOS drive
+paths and URLs.
+
+..
+
+.. date: 2024-10-30-23-42-44
+.. gh-issue: 126223
+.. nonce: k2qooc
+.. section: Library
+
+Raise a :exc:`UnicodeEncodeError` instead of a :exc:`SystemError` upon
+calling :func:`!_interpreters.create` with an invalid Unicode character.
+
+..
+
+.. date: 2024-10-30-20-45-17
+.. gh-issue: 126205
+.. nonce: CHEmtx
+.. section: Library
+
+Fix issue where :func:`urllib.request.pathname2url` generated URLs beginning
+with four slashes (rather than two) when given a Windows UNC path.
+
+..
+
+.. date: 2024-10-29-11-45-44
+.. gh-issue: 126105
+.. nonce: cOL-R6
+.. section: Library
+
+Fix a crash in :mod:`ast` when the :attr:`ast.AST._fields` attribute is
+deleted.
+
+..
+
+.. date: 2024-10-29-10-58-52
+.. gh-issue: 126106
+.. nonce: rlF798
+.. section: Library
+
+Fixes a possible ``NULL`` pointer dereference in :mod:`ssl`.
+
+..
+
+.. date: 2024-10-29-10-38-28
+.. gh-issue: 126080
+.. nonce: qKRBuo
+.. section: Library
+
+Fix a use-after-free crash on :class:`asyncio.Task` objects for which the
+underlying event loop implements an evil :meth:`~object.__getattribute__`.
+Reported by Nico-Posada. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-10-28-22-35-22
+.. gh-issue: 126083
+.. nonce: TuI--n
+.. section: Library
+
+Fixed a reference leak in :class:`asyncio.Task` objects when reinitializing
+the same object with a non-``None`` context. Patch by Nico Posada.
+
+..
+
+.. date: 2024-10-26-12-50-48
+.. gh-issue: 125984
+.. nonce: d4vp5_
+.. section: Library
+
+Fix use-after-free crashes on :class:`asyncio.Future` objects for which the
+underlying event loop implements an evil :meth:`~object.__getattribute__`.
+Reported by Nico-Posada. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-10-25-11-13-24
+.. gh-issue: 125969
+.. nonce: YvbrTr
+.. section: Library
+
+Fix an out-of-bounds crash when an evil :meth:`asyncio.loop.call_soon`
+mutates the length of the internal callbacks list. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-10-25-10-53-56
+.. gh-issue: 125966
+.. nonce: eOCYU_
+.. section: Library
+
+Fix a use-after-free crash in :meth:`asyncio.Future.remove_done_callback`.
+Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-10-24-14-08-10
+.. gh-issue: 125789
+.. nonce: eaiAMw
+.. section: Library
+
+Fix possible crash when mutating list of callbacks returned by
+:attr:`!asyncio.Future._callbacks`. It now always returns a new copy in C
+implementation :mod:`!_asyncio`. Patch by Kumar Aditya.
+
+..
+
+.. date: 2024-10-24-10-49-47
+.. gh-issue: 124452
+.. nonce: eqTRgx
+.. section: Library
+
+Fix an issue in :meth:`email.policy.EmailPolicy.header_source_parse` and
+:meth:`email.policy.Compat32.header_source_parse` that introduced spurious
+leading whitespaces into header values when the header includes a newline
+character after the header name delimiter (``:``) and before the value.
+
+..
+
+.. date: 2024-10-23-17-45-40
+.. gh-issue: 125884
+.. nonce: 41E_PD
+.. section: Library
+
+Fixed the bug for :mod:`pdb` where it can't set breakpoints on functions
+with certain annotations.
+
+..
+
+.. date: 2024-10-22-13-28-00
+.. gh-issue: 125355
+.. nonce: zssHm_
+.. section: Library
+
+Fix several bugs in :meth:`argparse.ArgumentParser.parse_intermixed_args`.
+
+* The parser no longer changes temporarily during parsing.
+* Default values are not processed twice.
+* Required mutually exclusive groups containing positional arguments are now supported.
+* The missing arguments report now includes the names of all required optional and positional arguments.
+* Unknown options can be intermixed with positional arguments in parse_known_intermixed_args().
+
+..
+
+.. date: 2024-10-19-16-06-52
+.. gh-issue: 125666
+.. nonce: jGfdCP
+.. section: Library
+
+Avoid the exiting the interpreter if a null byte is given as input in the
+new REPL.
+
+..
+
+.. date: 2024-10-19-13-37-37
+.. gh-issue: 125710
+.. nonce: FyFAAr
+.. section: Library
+
+[Enum] fix hashable<->nonhashable comparisons for member values
+
+..
+
+.. date: 2024-10-19-11-06-06
+.. gh-issue: 125631
+.. nonce: BlhVvR
+.. section: Library
+
+Restore ability to set :attr:`~pickle.Pickler.persistent_id` and
+:attr:`~pickle.Unpickler.persistent_load` attributes of instances of the
+:class:`!Pickler` and :class:`!Unpickler` classes in the :mod:`pickle`
+module.
+
+..
+
+.. date: 2024-10-19-01-30-40
+.. gh-issue: 125378
+.. nonce: WTosxX
+.. section: Library
+
+Fixed the bug in :mod:`pdb` where after a multi-line command, an empty line
+repeats the first line of the multi-line command, instead of the full
+command.
+
+..
+
+.. date: 2024-10-18-09-51-29
+.. gh-issue: 125682
+.. nonce: vsj4cU
+.. section: Library
+
+Reject non-ASCII digits in the Python implementation of :func:`json.loads`
+conforming to the JSON specification.
+
+..
+
+.. date: 2024-10-18-08-58-10
+.. gh-issue: 125660
+.. nonce: sDdDqO
+.. section: Library
+
+Reject invalid unicode escapes for Python implementation of
+:func:`json.loads`.
+
+..
+
+.. date: 2024-10-17-16-10-29
+.. gh-issue: 125259
+.. nonce: oMew0c
+.. section: Library
+
+Fix the notes removal logic for errors thrown in enum initialization.
+
+..
+
+.. date: 2024-10-16-20-32-40
+.. gh-issue: 125590
+.. nonce: stHzOP
+.. section: Library
+
+Allow ``FrameLocalsProxy`` to delete and pop if the key is not a fast
+variable.
+
+..
+
+.. date: 2024-10-15-14-01-03
+.. gh-issue: 125519
+.. nonce: TqGh6a
+.. section: Library
+
+Improve traceback if :func:`importlib.reload` is called with an object that
+is not a module. Patch by Alex Waygood.
+
+..
+
+.. date: 2024-10-14-17-29-34
+.. gh-issue: 125451
+.. nonce: fmP3T9
+.. section: Library
+
+Fix deadlock when :class:`concurrent.futures.ProcessPoolExecutor` shuts down
+concurrently with an error when feeding a job to a worker process.
+
+..
+
+.. date: 2024-10-14-04-44-12
+.. gh-issue: 125422
+.. nonce: MlVuC6
+.. section: Library
+
+Fixed the bug where :mod:`pdb` and :mod:`bdb` can step into the bottom
+caller frame.
+
+..
+
+.. date: 2024-10-14-02-27-03
+.. gh-issue: 100141
+.. nonce: NuAcwa
+.. section: Library
+
+Fixed the bug where :mod:`pdb` will be stuck in an infinite loop when
+debugging an empty file.
+
+..
+
+.. date: 2024-10-14-02-07-44
+.. gh-issue: 125115
+.. nonce: IOf3ON
+.. section: Library
+
+Fixed a bug in :mod:`pdb` where arguments starting with ``-`` can't be
+passed to the debugged script.
+
+..
+
+.. date: 2024-10-13-20-21-35
+.. gh-issue: 53203
+.. nonce: Rz1c8A
+.. section: Library
+
+Fix :func:`time.strptime` for ``%c``, ``%x`` and ``%X`` formats in many
+locales that use non-ASCII digits, like Persian, Burmese, Odia and Shan.
+
+..
+
+.. date: 2024-10-13-15-04-58
+.. gh-issue: 125398
+.. nonce: UW7Ndv
+.. section: Library
+
+Fix the conversion of the :envvar:`!VIRTUAL_ENV` path in the activate script
+in :mod:`venv` when running in Git Bash for Windows.
+
+..
+
+.. date: 2024-10-12-15-49-17
+.. gh-issue: 125316
+.. nonce: t15RnJ
+.. section: Library
+
+Fix using :func:`functools.partial` as :class:`enum.Enum` member. A
+FutureWarning with suggestion to use :func:`enum.member` is now emitted when
+the ``partial`` instance is used as an enum member.
+
+..
+
+.. date: 2024-10-11-00-40-13
+.. gh-issue: 125245
+.. nonce: 8vReM-
+.. section: Library
+
+Fix race condition when importing :mod:`collections.abc`, which could
+incorrectly return an empty module.
+
+..
+
+.. date: 2024-10-10-20-39-57
+.. gh-issue: 125243
+.. nonce: eUbbtu
+.. section: Library
+
+Fix data race when creating :class:`zoneinfo.ZoneInfo` objects in the free
+threading build.
+
+..
+
+.. date: 2024-10-10-19-57-35
+.. gh-issue: 125254
+.. nonce: RtZxXS
+.. section: Library
+
+Fix a bug where ArgumentError includes the incorrect ambiguous option in
+:mod:`argparse`.
+
+..
+
+.. date: 2024-10-10-18-33-31
+.. gh-issue: 125235
+.. nonce: 0kOB5I
+.. section: Library
+
+Keep :mod:`tkinter` TCL paths in venv pointing to base installation on
+Windows.
+
+..
+
+.. date: 2024-10-09-21-42-43
+.. gh-issue: 61011
+.. nonce: pQXZb1
+.. section: Library
+
+Fix inheritance of nested mutually exclusive groups from parent parser in
+:class:`argparse.ArgumentParser`. Previously, all nested mutually exclusive
+groups lost their connection to the group containing them and were displayed
+as belonging directly to the parser.
+
+..
+
+.. date: 2024-10-09-17-07-33
+.. gh-issue: 52551
+.. nonce: PBakSY
+.. section: Library
+
+Fix encoding issues in :func:`time.strftime`, the
+:meth:`~datetime.datetime.strftime` method of the :mod:`datetime` classes
+:class:`~datetime.datetime`, :class:`~datetime.date` and
+:class:`~datetime.time` and formatting of these classes. Characters not
+encodable in the current locale are now acceptable in the format string.
+Surrogate pairs and sequence of surrogatescape-encoded bytes are no longer
+recombinated. Embedded null character no longer terminates the format
+string.
+
+..
+
+.. date: 2024-10-09-07-09-00
+.. gh-issue: 125118
+.. nonce: J9rQ1S
+.. section: Library
+
+Don't copy arbitrary values to :c:expr:`_Bool` in the :mod:`struct` module.
+
+..
+
+.. date: 2024-10-08-21-17-16
+.. gh-issue: 125069
+.. nonce: 0RP0Mx
+.. section: Library
+
+Fix an issue where providing a :class:`pathlib.PurePath` object as an
+initializer argument to a second :class:`~pathlib.PurePath` object with a
+different :attr:`~pathlib.PurePath.parser` resulted in arguments to the
+former object's initializer being joined by the latter object's parser.
+
+..
+
+.. date: 2024-10-08-13-28-22
+.. gh-issue: 125096
+.. nonce: Vz0W5g
+.. section: Library
+
+If the :envvar:`PYTHON_BASIC_REPL` environment variable is set, the
+:mod:`site` module no longer imports the :mod:`!_pyrepl` module. Moreover,
+the :mod:`site` module now respects :option:`-E` and :option:`-I` command
+line options: ignore :envvar:`PYTHON_BASIC_REPL` in this case. Patch by
+Victor Stinner.
+
+..
+
+.. date: 2024-10-08-12-09-09
+.. gh-issue: 124969
+.. nonce: _VBQLq
+.. section: Library
+
+Fix ``locale.nl_langinfo(locale.ALT_DIGITS)`` on platforms with glibc. Now
+it returns a string consisting of up to 100 semicolon-separated symbols (an
+empty string in most locales) on all Posix platforms. Previously it only
+returned the first symbol or an empty string.
+
+..
+
+.. date: 2024-10-05-15-49-53
+.. gh-issue: 124960
+.. nonce: Bol9hT
+.. section: Library
+
+Fix support for the ``barry_as_FLUFL`` future flag in the new REPL.
+
+..
+
+.. date: 2024-10-04-22-43-48
+.. gh-issue: 124984
+.. nonce: xjMv9b
+.. section: Library
+
+Fixed thread safety in :mod:`ssl` in the free-threaded build. OpenSSL
+operations are now protected by a per-object lock.
+
+..
+
+.. date: 2024-10-04-08-46-00
+.. gh-issue: 124958
+.. nonce: rea9-x
+.. section: Library
+
+Fix refcycles in exceptions raised from :class:`asyncio.TaskGroup` and the
+python implementation of :class:`asyncio.Future`
+
+..
+
+.. date: 2024-10-03-20-45-57
+.. gh-issue: 53203
+.. nonce: 3Sk4Ia
+.. section: Library
+
+Fix :func:`time.strptime` for ``%c`` and ``%x`` formats in many locales:
+Arabic, Bislama, Breton, Bodo, Kashubian, Chuvash, Estonian, French, Irish,
+Ge'ez, Gurajati, Manx Gaelic, Hebrew, Hindi, Chhattisgarhi, Haitian Kreyol,
+Japanese, Kannada, Korean, Marathi, Malay, Norwegian, Nynorsk, Punjabi,
+Rajasthani, Tok Pisin, Yoruba, Yue Chinese, Yau/Nungon and Chinese.
+
+..
+
+.. date: 2024-10-02-21-11-18
+.. gh-issue: 124917
+.. nonce: Lnwh5b
+.. section: Library
+
+Allow calling :func:`os.path.exists` and :func:`os.path.lexists` with
+keyword arguments on Windows. Fixes a regression in 3.13.0.
+
+..
+
+.. date: 2024-10-02-15-05-45
+.. gh-issue: 124653
+.. nonce: tqsTu9
+.. section: Library
+
+Fix detection of the minimal Queue API needed by the :mod:`logging` module.
+Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-10-01-17-12-20
+.. gh-issue: 124858
+.. nonce: Zy0tvT
+.. section: Library
+
+Fix reference cycles left in tracebacks in :func:`asyncio.open_connection`
+when used with ``happy_eyeballs_delay``
+
+..
+
+.. date: 2024-10-01-13-46-58
+.. gh-issue: 124390
+.. nonce: dK1Zcm
+.. section: Library
+
+Fixed :exc:`AssertionError` when using
+:func:`!asyncio.staggered.staggered_race` with
+:attr:`asyncio.eager_task_factory`.
+
+..
+
+.. date: 2024-09-28-02-03-04
+.. gh-issue: 124651
+.. nonce: bLBGtH
+.. section: Library
+
+Properly quote template strings in :mod:`venv` activation scripts.
+
+..
+
+.. date: 2024-09-27-15-16-04
+.. gh-issue: 116850
+.. nonce: dBkR0-
+.. section: Library
+
+Fix :mod:`argparse` for namespaces with not directly writable dict (e.g.
+classes).
+
+..
+
+.. date: 2024-09-26-22-14-12
+.. gh-issue: 58573
+.. nonce: hozbm9
+.. section: Library
+
+Fix conflicts between abbreviated long options in the parent parser and
+subparsers in :mod:`argparse`.
+
+..
+
+.. date: 2024-09-26-13-43-39
+.. gh-issue: 124594
+.. nonce: peYhsP
+.. section: Library
+
+All :mod:`asyncio` REPL prompts run in the same :class:`context
+<contextvars.Context>`. Contributed by Bartosz Sławecki.
+
+..
+
+.. date: 2024-09-26-09-18-09
+.. gh-issue: 61181
+.. nonce: dwjmch
+.. section: Library
+
+Fix support of :ref:`choices` with string value in :mod:`argparse`.
+Substrings of the specified string no longer considered valid values.
+
+..
+
+.. date: 2024-09-25-18-08-29
+.. gh-issue: 80259
+.. nonce: kO5Tw7
+.. section: Library
+
+Fix :mod:`argparse` support of positional arguments with ``nargs='?'``,
+``default=argparse.SUPPRESS`` and specified ``type``.
+
+..
+
+.. date: 2024-09-25-18-07-51
+.. gh-issue: 120378
+.. nonce: NlBSz_
+.. section: Library
+
+Fix a crash related to an integer overflow in :func:`curses.resizeterm` and
+:func:`curses.resize_term`.
+
+..
+
+.. date: 2024-09-24-22-38-51
+.. gh-issue: 123884
+.. nonce: iEPTK4
+.. section: Library
+
+Fixed bug in itertools.tee() handling of other tee inputs (a tee in a tee).
+The output now has the promised *n* independent new iterators.  Formerly,
+the first iterator was identical (not independent) to the input iterator.
+This would sometimes give surprising results.
+
+..
+
+.. date: 2024-09-24-18-16-59
+.. gh-issue: 58956
+.. nonce: 0wFrBR
+.. section: Library
+
+Fixed a bug in :mod:`pdb` where sometimes the breakpoint won't trigger if it
+was set on a function which is already in the call stack.
+
+..
+
+.. date: 2024-09-24-12-34-48
+.. gh-issue: 124345
+.. nonce: s3vKql
+.. section: Library
+
+:mod:`argparse` vim supports abbreviated single-dash long options separated
+by ``=`` from its value.
+
+..
+
+.. date: 2024-09-23-17-33-47
+.. gh-issue: 104860
+.. nonce: O86OSc
+.. section: Library
+
+Fix disallowing abbreviation of single-dash long options in :mod:`argparse`
+with ``allow_abbrev=False``.
+
+..
+
+.. date: 2024-09-21-23-56-41
+.. gh-issue: 63143
+.. nonce: YKu-LQ
+.. section: Library
+
+Fix parsing mutually exclusive arguments in :mod:`argparse`. Arguments with
+the value identical to the default value (e.g. booleans, small integers,
+empty or 1-character strings) are no longer considered "not present".
+
+..
+
+.. date: 2024-09-21-22-32-21
+.. gh-issue: 72795
+.. nonce: naLmkX
+.. section: Library
+
+Positional arguments with :ref:`nargs` equal to ``'*'`` or
+:data:`!argparse.REMAINDER` are no longer required. This allows to use
+positional argument with ``nargs='*'`` and without ``default`` in mutually
+exclusive group and improves error message about required arguments.
+
+..
+
+.. date: 2024-09-21-19-02-37
+.. gh-issue: 59317
+.. nonce: OAhNZZ
+.. section: Library
+
+Fix parsing positional argument with :ref:`nargs` equal to ``'?'`` or
+``'*'`` if it is preceded by an option and another positional argument.
+
+..
+
+.. date: 2024-09-20-12-23-11
+.. gh-issue: 53780
+.. nonce: mrV1zi
+.. section: Library
+
+:mod:`argparse` now ignores the first ``"--"`` (double dash) between an
+option and command.
+
+..
+
+.. date: 2024-09-19-20-15-00
+.. gh-issue: 124217
+.. nonce: j0KlQB
+.. section: Library
+
+Add RFC 9637 reserved IPv6 block ``3fff::/20`` in :mod:`ipaddress` module.
+
+..
+
+.. date: 2024-09-19-10-36-18
+.. gh-issue: 81691
+.. nonce: Hyhp_U
+.. section: Library
+
+Fix handling of multiple ``"--"`` (double dashes) in :mod:`argparse`. Only
+the first one has now been removed, all subsequent ones are now taken
+literally.
+
+..
+
+.. date: 2024-09-16-12-31-48
+.. gh-issue: 123978
+.. nonce: z3smEu
+.. section: Library
+
+Remove broken :func:`time.thread_time` and :func:`time.thread_time_ns` on
+NetBSD.
+
+..
+
+.. date: 2024-09-13-18-24-27
+.. gh-issue: 124008
+.. nonce: XaiPQx
+.. section: Library
+
+Fix possible crash (in debug build), incorrect output or returning incorrect
+value from raw binary ``write()`` when writing to console on Windows.
+
+..
+
+.. date: 2024-09-11-13-33-19
+.. gh-issue: 123935
+.. nonce: fRZ_56
+.. section: Library
+
+Fix parent slots detection for dataclasses that inherit from classes with
+``__dictoffset__``.
+
+..
+
+.. date: 2024-09-06-00-00-43
+.. gh-issue: 122765
+.. nonce: tx4hsr
+.. section: Library
+
+Fix unbalanced quote errors occurring when activate.csh in :mod:`venv` was
+sourced with a custom prompt containing unpaired quotes or newlines.
+
+..
+
+.. date: 2024-08-28-19-27-35
+.. gh-issue: 123370
+.. nonce: SPZ9Ux
+.. section: Library
+
+Fix the canvas not clearing after running turtledemo clock.
+
+..
+
+.. date: 2024-08-23-15-49-10
+.. gh-issue: 116810
+.. nonce: QLBUU8
+.. section: Library
+
+Resolve a memory leak introduced in CPython 3.10's :mod:`ssl` when the
+:attr:`ssl.SSLSocket.session` property was accessed.  Speeds up read and
+write access to said property by no longer unnecessarily cloning session
+objects via serialization.
+
+..
+
+.. date: 2024-07-23-02-24-50
+.. gh-issue: 120754
+.. nonce: nHb5mG
+.. section: Library
+
+Update unbounded ``read`` calls in :mod:`zipfile` to specify an explicit
+``size`` putting a limit on how much data they may read. This also updates
+handling around ZIP max comment size to match the standard instead of
+reading comments that are one byte too long.
+
+..
+
+.. date: 2024-06-06-04-06-05
+.. gh-issue: 70764
+.. nonce: 6511hw
+.. section: Library
+
+Fixed an issue where :func:`inspect.getclosurevars` would incorrectly
+classify an attribute name as a global variable when the name exists both as
+an attribute name and a global variable.
+
+..
+
+.. date: 2024-06-05-19-09-36
+.. gh-issue: 118289
+.. nonce: moL9_d
+.. section: Library
+
+:func:`!posixpath.realpath` now raises :exc:`NotADirectoryError` when
+*strict* mode is enabled and a non-directory path with a trailing slash is
+supplied.
+
+..
+
+.. date: 2024-06-02-11-48-19
+.. gh-issue: 119826
+.. nonce: N1obGa
+.. section: Library
+
+Always return an absolute path for :func:`os.path.abspath` on Windows.
+
+..
+
+.. date: 2024-04-19-05-58-50
+.. gh-issue: 117766
+.. nonce: J3xepp
+.. section: Library
+
+Always use :func:`str` to print ``choices`` in :mod:`argparse`.
+
+..
+
+.. date: 2023-10-26-16-36-22
+.. gh-issue: 101955
+.. nonce: Ixu3IF
+.. section: Library
+
+Fix SystemError when match regular expression pattern containing some
+combination of possessive quantifier, alternative and capture group.
+
+..
+
+.. date: 2023-02-15-23-54-42
+.. gh-issue: 88110
+.. nonce: KU6erv
+.. section: Library
+
+Fixed :class:`multiprocessing.Process` reporting a ``.exitcode`` of 1 even
+on success when using the ``"fork"`` start method while using a
+:class:`concurrent.futures.ThreadPoolExecutor`.
+
+..
+
+.. date: 2022-10-15-10-18-20
+.. gh-issue: 71936
+.. nonce: MzJjc_
+.. section: Library
+
+Fix a race condition in :class:`multiprocessing.pool.Pool`.
+
+..
+
+.. bpo: 46128
+.. date: 2021-12-19-10-47-24
+.. nonce: Qv3EK1
+.. section: Library
+
+Strip :class:`unittest.IsolatedAsyncioTestCase` stack frames from reported
+stacktraces.
+
+..
+
+.. bpo: 14074
+.. date: 2018-12-04-07-36-27
+.. nonce: fMLKCu
+.. section: Library
+
+Fix :mod:`argparse` metavar processing to allow positional arguments to have
+a tuple metavar.
+
+..
+
+.. date: 2024-10-04-15-34-34
+.. gh-issue: 122392
+.. nonce: V8K3w2
+.. section: IDLE
+
+Increase currently inadequate vertical spacing for the IDLE browsers (path,
+module, and stack) on high-resolution monitors.
+
+..
+
+.. date: 2024-11-09-19-43-10
+.. gh-issue: 126622
+.. nonce: YacfDc
+.. section: Documentation
+
+Added stub pages for removed modules explaining their removal, where to find
+replacements, and linking to the last Python version that supported them.
+Contributed by Ned Batchelder.
+
+..
+
+.. date: 2024-10-10-23-46-54
+.. gh-issue: 125277
+.. nonce: QAby09
+.. section: Documentation
+
+Require Sphinx 7.2.6 or later to build the Python documentation. Patch by
+Adam Turner.
+
+..
+
+.. date: 2024-10-10-02-56-24
+.. gh-issue: 124872
+.. nonce: 0mDDOq
+.. section: Documentation
+
+Added definitions for :term:`context`, :term:`current context`, and
+:term:`context management protocol`, updated related definitions to be
+consistent, and expanded the documentation for :class:`contextvars.Context`.
+
+..
+
+.. date: 2024-10-07-00-31-17
+.. gh-issue: 125018
+.. nonce: yKnymn
+.. section: Documentation
+
+The :mod:`importlib.metadata` documentation now includes semantic
+cross-reference targets for the significant documented APIs. This means
+intersphinx references like :func:`importlib.metadata.version` will now work
+as expected.
+
+..
+
+.. date: 2024-08-01-17-18-21
+.. gh-issue: 70870
+.. nonce: fZnBM9
+.. section: Documentation
+
+Clarified the dual usage of the term "free variable" (both the formal
+meaning of any reference to names defined outside the local scope, and the
+narrower pragmatic meaning of nonlocal variables named in ``co_freevars``).
+
+..
+
+.. date: 2024-07-19-12-22-48
+.. gh-issue: 121277
+.. nonce: wF_zKd
+.. section: Documentation
+
+Writers of CPython's documentation can now use ``next`` as the version for
+the ``versionchanged``, ``versionadded``, ``deprecated`` directives.
+
+..
+
+.. date: 2023-03-28-22-24-45
+.. gh-issue: 60712
+.. nonce: So5uad
+.. section: Documentation
+
+Include the :class:`object` type in the lists of documented types. Change by
+Furkan Onder and Martin Panter.
+
+..
+
+.. bpo: 34008
+.. date: 2018-07-04-20-35-25
+.. nonce: bqecIb
+.. section: Documentation
+
+The :c:func:`Py_Main` documentation moved from the "Very High Level API"
+section to the "Initialization and Finalization" section.
+
+Also make it explicit that we expect ``Py_Main`` to typically be called
+instead of ``Py_Initialize`` rather than after it (since ``Py_Main`` makes
+its own call to ``Py_Initialize``). Document that calling both is supported
+but is version dependent on which settings will be applied correctly.
+
+..
+
+.. date: 2024-11-24-07-01-28
+.. gh-issue: 113841
+.. nonce: WFg-Bu
+.. section: Core and Builtins
+
+Fix possible undefined behavior division by zero in :class:`complex`'s
+:c:func:`_Py_c_pow`.
+
+..
+
+.. date: 2024-11-19-21-49-58
+.. gh-issue: 127020
+.. nonce: 5vvI17
+.. section: Core and Builtins
+
+Fix a crash in the free threading build when :c:func:`PyCode_GetCode`,
+:c:func:`PyCode_GetVarnames`, :c:func:`PyCode_GetCellvars`, or
+:c:func:`PyCode_GetFreevars` were called from multiple threads at the same
+time.
+
+..
+
+.. date: 2024-11-18-23-18-17
+.. gh-issue: 126980
+.. nonce: r8QHdi
+.. section: Core and Builtins
+
+Fix :meth:`~object.__buffer__` of :class:`bytearray` crashing when
+:attr:`~inspect.BufferFlags.READ` or :attr:`~inspect.BufferFlags.WRITE` are
+passed as flags.
+
+..
+
+.. date: 2024-11-16-11-11-35
+.. gh-issue: 126881
+.. nonce: ijofLZ
+.. section: Core and Builtins
+
+Fix crash in finalization of dtoa state. Patch by Kumar Aditya.
+
+..
+
+.. date: 2024-11-12-19-24-00
+.. gh-issue: 126341
+.. nonce: 5SdAe1
+.. section: Core and Builtins
+
+Now :exc:`ValueError` is raised instead of :exc:`SystemError` when trying to
+iterate over a released :class:`memoryview` object.
+
+..
+
+.. date: 2024-11-11-17-02-48
+.. gh-issue: 126688
+.. nonce: QiOXUi
+.. section: Core and Builtins
+
+Fix a crash when calling :func:`os.fork` on some operating systems,
+including SerenityOS.
+
+..
+
+.. date: 2024-11-09-16-10-22
+.. gh-issue: 126066
+.. nonce: 9zs4m4
+.. section: Core and Builtins
+
+Fix :mod:`importlib` to not write an incomplete .pyc files when a ulimit or
+some other operating system mechanism is preventing the write to go through
+fully.
+
+..
+
+.. date: 2024-11-02-14-43-46
+.. gh-issue: 126312
+.. nonce: LMHzLT
+.. section: Core and Builtins
+
+Fix crash during garbage collection on an object frozen by :func:`gc.freeze`
+on the free-threaded build.
+
+..
+
+.. date: 2024-10-29-15-17-31
+.. gh-issue: 126139
+.. nonce: B4OQ8a
+.. section: Core and Builtins
+
+Provide better error location when attempting to use a :term:`future
+statement <__future__>` with an unknown future feature.
+
+..
+
+.. date: 2024-10-26-23-50-03
+.. gh-issue: 126018
+.. nonce: Hq-qcM
+.. section: Core and Builtins
+
+Fix a crash in :func:`sys.audit` when passing a non-string as first argument
+and Python was compiled in debug mode.
+
+..
+
+.. date: 2024-10-24-22-43-03
+.. gh-issue: 125942
+.. nonce: 3UQht1
+.. section: Core and Builtins
+
+On Android, the ``errors`` setting of :any:`sys.stdout` was changed from
+``surrogateescape`` to ``backslashreplace``.
+
+..
+
+.. date: 2024-10-23-14-42-27
+.. gh-issue: 125859
+.. nonce: m3EF9E
+.. section: Core and Builtins
+
+Fix a crash in the free threading build when :func:`gc.get_objects` or
+:func:`gc.get_referrers` is called during an in-progress garbage collection.
+
+..
+
+.. date: 2024-10-18-16-00-10
+.. gh-issue: 125703
+.. nonce: QRoqMo
+.. section: Core and Builtins
+
+Correctly honour :mod:`tracemalloc` hooks in specialized ``Py_DECREF``
+paths. Patch by Pablo Galindo
+
+..
+
+.. date: 2024-10-18-10-11-43
+.. gh-issue: 125593
+.. nonce: Q97m3A
+.. section: Core and Builtins
+
+Use color to highlight error locations in traceback from exception group
+
+..
+
+.. date: 2024-10-16-12-12-39
+.. gh-issue: 125444
+.. nonce: 9tG2X6
+.. section: Core and Builtins
+
+Fix illegal instruction for older Arm architectures. Patch by Diego Russo,
+testing by Ross Burton.
+
+..
+
+.. date: 2024-10-15-15-29-41
+.. gh-issue: 124375
+.. nonce: wNrWVa
+.. section: Core and Builtins
+
+Fix a crash in the free threading build when the GC runs concurrently with a
+new thread starting.
+
+..
+
+.. date: 2024-10-10-14-47-13
+.. gh-issue: 125221
+.. nonce: nfSQzT
+.. section: Core and Builtins
+
+Fix possible race condition when calling :meth:`~object.__reduce_ex__` for
+the first time in the free threading build.
+
+..
+
+.. date: 2024-10-09-13-53-50
+.. gh-issue: 125038
+.. nonce: ffSLCz
+.. section: Core and Builtins
+
+Fix crash when iterating over a generator expression after direct changes on
+``gi_frame.f_locals``. Patch by Mikhail Efimov.
+
+..
+
+.. date: 2024-10-03-14-39-41
+.. gh-issue: 123378
+.. nonce: dCxANf
+.. section: Core and Builtins
+
+Fix a crash in the :meth:`~object.__str__` method of :exc:`UnicodeError`
+objects when the :attr:`UnicodeError.start` and :attr:`UnicodeError.end`
+values are invalid or out-of-range. Patch by Bénédikt Tran.
+
+..
+
+.. date: 2024-09-26-18-21-06
+.. gh-issue: 116510
+.. nonce: FacUWO
+.. section: Core and Builtins
+
+Fix a crash caused by immortal interned strings being shared between
+sub-interpreters that use basic single-phase init.  In that case, the string
+can be used by an interpreter that outlives the interpreter that created and
+interned it.  For interpreters that share obmalloc state, also share the
+interned dict with the main interpreter.
+
+..
+
+.. date: 2024-09-19-13-17-31
+.. gh-issue: 122878
+.. nonce: 4iFpsB
+.. section: Core and Builtins
+
+Use the ``pager`` binary, if available (e.g. on Debian and derivatives), to
+display REPL ``help()``.
+
+..
+
+.. date: 2024-09-17-22-06-01
+.. gh-issue: 124188
+.. nonce: aFqNAB
+.. section: Core and Builtins
+
+Fix reading and decoding a line from the source file witn non-UTF-8 encoding
+for syntax errors raised in the compiler.
+
+..
+
+.. date: 2024-09-11-01-32-07
+.. gh-issue: 123930
+.. nonce: BkPfB6
+.. section: Core and Builtins
+
+Improve the error message when a script shadowing a module from the standard
+library causes :exc:`ImportError` to be raised during a "from" import.
+Similarly, improve the error message when a script shadowing a third party
+module attempts to "from" import an attribute from that third party module
+while still initialising.
+
+..
+
+.. date: 2024-08-12-11-19-37
+.. gh-issue: 122907
+.. nonce: q68096
+.. section: Core and Builtins
+
+Building with ``HAVE_DYNAMIC_LOADING`` now works as well as it did in 3.12.
+Existing deficiences will be addressed separately. (See
+https://github.com/python/cpython/issues/122950.)
+
+..
+
+.. date: 2024-05-12-03-10-36
+.. gh-issue: 118950
+.. nonce: 5Wc4vp
+.. section: Core and Builtins
+
+Fix bug where SSLProtocol.connection_lost wasn't getting called when OSError
+was thrown on writing to socket.
+
+..
+
+.. date: 2023-12-30-00-21-45
+.. gh-issue: 113570
+.. nonce: _XQgsW
+.. section: Core and Builtins
+
+Fixed a bug in ``reprlib.repr`` where it incorrectly called the repr method
+on shadowed Python built-in types.
+
+..
+
+.. date: 2023-09-22-21-01-56
+.. gh-issue: 109746
+.. nonce: 32MHt9
+.. section: Core and Builtins
+
+If :func:`!_thread.start_new_thread` fails to start a new thread, it deletes
+its state from interpreter and thus avoids its repeated cleanup on
+finalization.
+
+..
+
+.. date: 2024-11-07-20-24-58
+.. gh-issue: 126554
+.. nonce: ri12eb
+.. section: C API
+
+Fix error handling in :class:`ctypes.CDLL` objects which could result in a
+crash in rare situations.
+
+..
+
+.. date: 2024-10-16-19-28-23
+.. gh-issue: 125608
+.. nonce: gTsU2g
+.. section: C API
+
+Fix a bug where dictionary watchers (e.g., :c:func:`PyDict_Watch`) on an
+object's attribute dictionary (:attr:`~object.__dict__`) were not triggered
+when the object's attributes were modified.
+
+..
+
+.. bpo: 34008
+.. date: 2018-06-30-21-48-16
+.. nonce: 2Wjtm0
+.. section: C API
+
+Added ``Py_IsInitialized`` to the list of APIs that are safe to call before
+the interpreter is initialized, and updated the embedding tests to cover it.
+
+..
+
+.. date: 2024-11-07-15-03-34
+.. gh-issue: 123877
+.. nonce: 9dWXe2
+.. section: Build
+
+Set ``wasm32-wasip1`` as the WASI target. The old ``wasm32-wasi`` target is
+deprecated so it can be used for an eventual WASI 1.0.
+
+..
+
+.. date: 2024-11-04-09-42-04
+.. gh-issue: 89640
+.. nonce: QBv05o
+.. section: Build
+
+Hard-code float word ordering as little endian on WASM.
+
+..
+
+.. date: 2024-10-24-22-14-35
+.. gh-issue: 125940
+.. nonce: 2wMtTA
+.. section: Build
+
+The Android build now supports `16 KB page sizes
+<https://developer.android.com/guide/practices/page-sizes>`__.
+
+..
+
+.. date: 2024-10-16-09-37-51
+.. gh-issue: 89640
+.. nonce: UDsW-j
+.. section: Build
+
+Improve detection of float word ordering on Linux when link-time
+optimizations are enabled.
+
+..
+
+.. date: 2024-10-13-21-11-30
+.. gh-issue: 125269
+.. nonce: BC-fdo
+.. section: Build
+
+Fix detection of whether ``-latomic`` is needed when cross-compiling CPython
+using the configure script.
+
+..
+
+.. date: 2024-08-14-19-17-34
+.. gh-issue: 121634
+.. nonce: eOMfHG
+.. section: Build
+
+Allow for specifying the target compile triple for WASI.
+
+..
+
+.. date: 2024-08-12-15-48-49
+.. gh-issue: 122578
+.. nonce: YJ3xEa
+.. section: Build
+
+Use WASI SDK 24 for testing.
+
+..
+
+.. date: 2024-03-03-20-28-23
+.. gh-issue: 115382
+.. nonce: 97hJFE
+.. section: Build
+
+Fix cross compile failures when the host and target SOABIs match.
diff --git a/Misc/NEWS.d/3.5.0a1.rst b/Misc/NEWS.d/3.5.0a1.rst
index 5244db107a73da..b197f3137e998f 100644
--- a/Misc/NEWS.d/3.5.0a1.rst
+++ b/Misc/NEWS.d/3.5.0a1.rst
@@ -3447,7 +3447,8 @@ tkinter.ttk now works when default root window is not set.
 .. nonce: FE_PII
 .. section: Library
 
-_tkinter.create() now creates tkapp object with wantobject=1 by default.
+``_tkinter.create()`` now creates ``tkapp`` object with ``wantobjects=1`` by
+default.
 
 ..
 
@@ -5467,7 +5468,7 @@ All resources are now allowed when tests are not run by regrtest.py.
 .. section: Tests
 
 Fix pystone micro-benchmark: use floor division instead of true division to
-benchmark integers instead of floating point numbers. Set pystone version to
+benchmark integers instead of floating-point numbers. Set pystone version to
 1.2. Patch written by Lennart Regebro.
 
 ..
diff --git a/Misc/NEWS.d/3.6.0a1.rst b/Misc/NEWS.d/3.6.0a1.rst
index 144d217f6098a1..c6a9b231b3ecfe 100644
--- a/Misc/NEWS.d/3.6.0a1.rst
+++ b/Misc/NEWS.d/3.6.0a1.rst
@@ -1484,9 +1484,9 @@ on UNIX signals (SIGSEGV, SIGFPE, SIGABRT).
 .. nonce: RWN1jR
 .. section: Library
 
-Add C functions :c:func:`_PyTraceMalloc_Track` and
-:c:func:`_PyTraceMalloc_Untrack` to track memory blocks using the
-:mod:`tracemalloc` module. Add :c:func:`_PyTraceMalloc_GetTraceback` to get
+Add C functions :c:func:`!_PyTraceMalloc_Track` and
+:c:func:`!_PyTraceMalloc_Untrack` to track memory blocks using the
+:mod:`tracemalloc` module. Add :c:func:`!_PyTraceMalloc_GetTraceback` to get
 the traceback of an object.
 
 ..
diff --git a/Misc/NEWS.d/3.6.5rc1.rst b/Misc/NEWS.d/3.6.5rc1.rst
index 3d14cc49049c8f..a45e97fb29045b 100644
--- a/Misc/NEWS.d/3.6.5rc1.rst
+++ b/Misc/NEWS.d/3.6.5rc1.rst
@@ -474,7 +474,7 @@ platforms with OpenSSL 1.0.2+ or inet_pton.
 .. nonce: ideco
 .. section: Library
 
-:func:`urllib.parse.urlsplit()` does not convert zone-id (scope) to lower
+:func:`urllib.parse.urlsplit` does not convert zone-id (scope) to lower
 case for scoped IPv6 addresses in hostnames now.
 
 ..
diff --git a/Misc/NEWS.d/3.7.0a4.rst b/Misc/NEWS.d/3.7.0a4.rst
index f2c6559037d84f..de50acb22355cf 100644
--- a/Misc/NEWS.d/3.7.0a4.rst
+++ b/Misc/NEWS.d/3.7.0a4.rst
@@ -434,7 +434,7 @@ loop.getaddrinfo, loop.getnameinfo.
 .. nonce: ideco
 .. section: Library
 
-:func:`urllib.parse.urlsplit()` does not convert zone-id (scope) to lower
+:func:`urllib.parse.urlsplit` does not convert zone-id (scope) to lower
 case for scoped IPv6 addresses in hostnames now.
 
 ..
@@ -463,7 +463,7 @@ Fix ``stop_serving`` in asyncio proactor loop kill all listening servers
 .. nonce: CUbsb2
 .. section: Library
 
-:func:`re.sub()` now replaces empty matches adjacent to a previous non-empty
+:func:`re.sub` now replaces empty matches adjacent to a previous non-empty
 match.
 
 ..
diff --git a/Misc/NEWS.d/3.7.0b1.rst b/Misc/NEWS.d/3.7.0b1.rst
index d1beec9cdcc33a..e3dcd4f59cd160 100644
--- a/Misc/NEWS.d/3.7.0b1.rst
+++ b/Misc/NEWS.d/3.7.0b1.rst
@@ -601,7 +601,7 @@ Add socket.getblocking() method.
 Add :mod:`importlib.resources` and :class:`importlib.abc.ResourceReader` as
 the unified API for reading resources contained within packages.  Loaders
 wishing to support resource reading must implement the
-:meth:`get_resource_reader()` method.  File-based and zipimport-based
+:meth:`get_resource_reader` method.  File-based and zipimport-based
 loaders both implement these APIs.  :class:`importlib.abc.ResourceLoader` is
 deprecated in favor of these new APIs.
 
diff --git a/Misc/NEWS.d/3.7.0b2.rst b/Misc/NEWS.d/3.7.0b2.rst
index 702dbc960c018d..10cd57ea7edfce 100644
--- a/Misc/NEWS.d/3.7.0b2.rst
+++ b/Misc/NEWS.d/3.7.0b2.rst
@@ -274,7 +274,7 @@ collections.ChainMap() preserves the order of the underlying mappings.
 .. nonce: -T77_c
 .. section: Library
 
-:func:`fnmatch.translate()` no longer produces patterns which contain set
+:func:`fnmatch.translate` no longer produces patterns which contain set
 operations. Sets starting with '[' or containing '--', '&&', '~~' or '||'
 will be interpreted differently in regular expressions in future versions.
 Currently they emit warnings. fnmatch.translate() now avoids producing
diff --git a/Misc/NEWS.d/3.7.0b4.rst b/Misc/NEWS.d/3.7.0b4.rst
index b17c7e08d1d408..87e3ebf32b49ac 100644
--- a/Misc/NEWS.d/3.7.0b4.rst
+++ b/Misc/NEWS.d/3.7.0b4.rst
@@ -235,7 +235,7 @@ End framing at the end of C implementation of :func:`pickle.Pickler.dump`.
 .. section: Library
 
 Improved error handling and fixed a reference leak in
-:func:`os.posix_spawn()`.
+:func:`os.posix_spawn`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.8.0a1.rst b/Misc/NEWS.d/3.8.0a1.rst
index 1964a8329979f5..5d775a8d0eafd5 100644
--- a/Misc/NEWS.d/3.8.0a1.rst
+++ b/Misc/NEWS.d/3.8.0a1.rst
@@ -224,7 +224,7 @@ positives from posix, socket, time, test_io, and test_faulthandler.
 .. nonce: 9vMWSP
 .. section: Core and Builtins
 
-Fix an assertion error in :func:`format` in debug build for floating point
+Fix an assertion error in :func:`format` in debug build for floating-point
 formatting with "n" format, zero padding and small width. Release build is
 not impacted. Patch by Karthikeyan Singaravelan.
 
@@ -625,7 +625,7 @@ Spytz.
 
 The C function ``property_descr_get()`` uses a "cached" tuple to optimize
 function calls. But this tuple can be discovered in debug mode with
-:func:`sys.getobjects()`. Remove the optimization, it's not really worth it
+:func:`sys.getobjects`. Remove the optimization, it's not really worth it
 and it causes 3 different crashes last years.
 
 ..
@@ -2519,7 +2519,7 @@ non-Windows systems.
 .. nonce: dQS1ng
 .. section: Library
 
-Fix incorrect parsing of :class:`_io.IncrementalNewlineDecoder`'s
+Fix incorrect parsing of :class:`io.IncrementalNewlineDecoder`'s
 *translate* argument.
 
 ..
@@ -2850,8 +2850,8 @@ allow for tweaking of protocols and also to add support by default for
 .. nonce: 37IdsA
 .. section: Library
 
-Fixed integer overflow in the :meth:`~hashlib.shake.digest()` and
-:meth:`~hashlib.shake.hexdigest()` methods for the SHAKE algorithm in the
+Fixed integer overflow in the :meth:`~hashlib.shake.digest` and
+:meth:`~hashlib.shake.hexdigest` methods for the SHAKE algorithm in the
 :mod:`hashlib` module.
 
 ..
@@ -3211,10 +3211,10 @@ bytes objects. (microoptimization)
 .. nonce: i-F_E5
 .. section: Library
 
-Add :func:`~unittest.addModuleCleanup()` and
-:meth:`~unittest.TestCase.addClassCleanup()` to unittest to support cleanups
-for :func:`~unittest.setUpModule()` and
-:meth:`~unittest.TestCase.setUpClass()`. Patch by Lisa Roach.
+Add :func:`~unittest.addModuleCleanup` and
+:meth:`~unittest.TestCase.addClassCleanup` to unittest to support cleanups
+for :func:`~unittest.setUpModule` and
+:meth:`~unittest.TestCase.setUpClass`. Patch by Lisa Roach.
 
 ..
 
@@ -3458,7 +3458,7 @@ Running the :mod:`trace` module no longer creates the ``trace.cover`` file.
 .. section: Library
 
 Fix crash when an ``ABC``-derived class with invalid ``__subclasses__`` is
-passed as the second argument to :func:`issubclass()`. Patch by Alexey
+passed as the second argument to :func:`issubclass`. Patch by Alexey
 Izbyshev.
 
 ..
@@ -3664,7 +3664,7 @@ Add pure Python fallback for functools.reduce. Patch by Robert Wright.
 .. section: Library
 
 The default asyncio task class now always has a name which can be get or set
-using two new methods (:meth:`~asyncio.Task.get_name()` and
+using two new methods (:meth:`~asyncio.Task.get_name` and
 :meth:`~asyncio.Task.set_name`) and is visible in the :func:`repr` output.
 An initial name can also be set using the new ``name`` keyword argument to
 :func:`asyncio.create_task` or the
@@ -4152,12 +4152,12 @@ Convert content length to string before putting to header.
 :func:`~os.path.exists`, :func:`~os.path.lexists`, :func:`~os.path.isdir`,
 :func:`~os.path.isfile`, :func:`~os.path.islink`, and
 :func:`~os.path.ismount`, and :mod:`pathlib.Path` methods that return a
-boolean result like :meth:`~pathlib.Path.exists()`,
-:meth:`~pathlib.Path.is_dir()`, :meth:`~pathlib.Path.is_file()`,
-:meth:`~pathlib.Path.is_mount()`, :meth:`~pathlib.Path.is_symlink()`,
-:meth:`~pathlib.Path.is_block_device()`,
-:meth:`~pathlib.Path.is_char_device()`, :meth:`~pathlib.Path.is_fifo()`,
-:meth:`~pathlib.Path.is_socket()` now return ``False`` instead of raising
+boolean result like :meth:`~pathlib.Path.exists`,
+:meth:`~pathlib.Path.is_dir`, :meth:`~pathlib.Path.is_file`,
+:meth:`~pathlib.Path.is_mount`, :meth:`~pathlib.Path.is_symlink`,
+:meth:`~pathlib.Path.is_block_device`,
+:meth:`~pathlib.Path.is_char_device`, :meth:`~pathlib.Path.is_fifo`,
+:meth:`~pathlib.Path.is_socket` now return ``False`` instead of raising
 :exc:`ValueError` or its subclasses :exc:`UnicodeEncodeError` and
 :exc:`UnicodeDecodeError` for paths that contain characters or bytes
 unrepresentable at the OS level.
@@ -5269,7 +5269,7 @@ performance and smaller size compared to protocol 3 introduced in Python
 .. section: Library
 
 Improved error handling and fixed a reference leak in
-:func:`os.posix_spawn()`.
+:func:`os.posix_spawn`.
 
 ..
 
@@ -5857,7 +5857,7 @@ collections.ChainMap() preserves the order of the underlying mappings.
 .. nonce: -T77_c
 .. section: Library
 
-:func:`fnmatch.translate()` no longer produces patterns which contain set
+:func:`fnmatch.translate` no longer produces patterns which contain set
 operations. Sets starting with '[' or containing '--', '&&', '~~' or '||'
 will be interpreted differently in regular expressions in future versions.
 Currently they emit warnings. fnmatch.translate() now avoids producing
@@ -6282,7 +6282,7 @@ Add documentation about the new command line interface of the gzip module.
 .. nonce: YO9CYm
 .. section: Documentation
 
-chm document displays non-ASCII charaters properly on some MBCS Windows
+chm document displays non-ASCII characters properly on some MBCS Windows
 systems.
 
 ..
@@ -8051,7 +8051,7 @@ Update macOS 10.9+ installer to Tcl/Tk 8.6.8.
 .. nonce: K6jCVG
 .. section: macOS
 
-In :mod:`_scproxy`, drop the GIL when calling into ``SystemConfiguration``
+In :mod:`!_scproxy`, drop the GIL when calling into ``SystemConfiguration``
 to avoid deadlocks.
 
 ..
diff --git a/Misc/NEWS.d/3.8.0a2.rst b/Misc/NEWS.d/3.8.0a2.rst
index c8620aeea7f133..0dbfa2758fe601 100644
--- a/Misc/NEWS.d/3.8.0a2.rst
+++ b/Misc/NEWS.d/3.8.0a2.rst
@@ -202,7 +202,7 @@ the mean and standard deviation of measurement data as single entity.
 .. nonce: V88MCD
 .. section: Library
 
-Added statistics.fmean() as a faster, floating point variant of the existing
+Added statistics.fmean() as a faster, floating-point variant of the existing
 mean() function.
 
 ..
diff --git a/Misc/NEWS.d/3.8.0a4.rst b/Misc/NEWS.d/3.8.0a4.rst
index 38fa1324dceb40..41eea7303bd899 100644
--- a/Misc/NEWS.d/3.8.0a4.rst
+++ b/Misc/NEWS.d/3.8.0a4.rst
@@ -600,7 +600,7 @@ exceptions.
 .. nonce: 9sjd38
 .. section: Library
 
-Add time module support and fix test_time faiures for VxWorks.
+Add time module support and fix test_time failures for VxWorks.
 
 ..
 
@@ -663,8 +663,8 @@ followed imports. Patch by Brandt Bucher.
 .. nonce: QmfNmY
 .. section: Library
 
-Added :meth:`~socket.create_server()` and
-:meth:`~socket.has_dualstack_ipv6()` convenience functions to automate the
+Added :meth:`~socket.create_server` and
+:meth:`~socket.has_dualstack_ipv6` convenience functions to automate the
 necessary tasks usually involved when creating a server socket, including
 accepting both IPv4 and IPv6 connections on the same socket.  (Contributed
 by Giampaolo Rodola in :issue:`17561`.)
@@ -843,7 +843,7 @@ Using the code of the ``Tools/scripts/serve.py`` script as an example in the
 .. nonce: nF1pP1
 .. section: Documentation
 
-Added Documention for  PyInterpreterState_Main().
+Added documentation for PyInterpreterState_Main().
 
 ..
 
@@ -945,7 +945,7 @@ P. Hemsley.
 .. nonce: __FTq9
 .. section: Tests
 
-Add a new :mod:`_testinternalcapi` module to test the internal C API.
+Add a new :mod:`!_testinternalcapi` module to test the internal C API.
 
 ..
 
@@ -1383,7 +1383,7 @@ Since Python 3.7.0, calling :c:func:`Py_DecodeLocale` before
 coerced and/or if the UTF-8 Mode is enabled by the user configuration. The
 LC_CTYPE coercion and UTF-8 Mode are now disabled by default to fix the
 mojibake issue. They must now be enabled explicitly (opt-in) using the new
-:c:func:`_Py_PreInitialize` API with ``_PyPreConfig``.
+:c:func:`!_Py_PreInitialize` API with ``_PyPreConfig``.
 
 ..
 
diff --git a/Misc/NEWS.d/3.8.0b1.rst b/Misc/NEWS.d/3.8.0b1.rst
index 4174ab8fac6192..5010473269d92f 100644
--- a/Misc/NEWS.d/3.8.0b1.rst
+++ b/Misc/NEWS.d/3.8.0b1.rst
@@ -176,8 +176,8 @@ Added new ``replace()`` method to the code type (:class:`types.CodeType`).
 .. nonce: d1SOtF
 .. section: Core and Builtins
 
-Implement :func:`socket.if_nameindex()`, :func:`socket.if_nametoindex()`,
-and :func:`socket.if_indextoname()` on Windows.
+Implement :func:`socket.if_nameindex`, :func:`socket.if_nametoindex`,
+and :func:`socket.if_indextoname` on Windows.
 
 ..
 
@@ -538,7 +538,7 @@ module.
 .. nonce: TQFOR4
 .. section: Library
 
-:meth:`!msilib.Directory.start_component()` no longer fails if *keyfile* is
+:meth:`!msilib.Directory.start_component` no longer fails if *keyfile* is
 not ``None``.
 
 ..
@@ -600,7 +600,7 @@ default.
 .. nonce: sLULGQ
 .. section: Library
 
-Fix destructor :class:`_pyio.BytesIO` and :class:`_pyio.TextIOWrapper`:
+Fix destructor :class:`!_pyio.BytesIO` and :class:`!_pyio.TextIOWrapper`:
 initialize their ``_buffer`` attribute as soon as possible (in the class
 body), because it's used by ``__del__()`` which calls ``close()``.
 
@@ -1371,7 +1371,7 @@ Asyncio: Remove inner callback on outer cancellation in shield
 .. nonce: d8djAJ
 .. section: Library
 
-Fix :meth:`asyncio.SelectorEventLoop.subprocess_exec()` leaks file
+Fix :meth:`asyncio.SelectorEventLoop.subprocess_exec` leaks file
 descriptors if ``Popen`` fails and called with ``stdin=subprocess.PIPE``.
 Patch by Niklas Fiekas.
 
diff --git a/Misc/NEWS.d/3.9.0a1.rst b/Misc/NEWS.d/3.9.0a1.rst
index 39d760cdd4fddf..d75132b0aac040 100644
--- a/Misc/NEWS.d/3.9.0a1.rst
+++ b/Misc/NEWS.d/3.9.0a1.rst
@@ -149,7 +149,7 @@ exception in :meth:`float.__getformat__`.
 .. nonce: 9-vKtO
 .. section: Core and Builtins
 
-Optimized :func:`math.floor()`, :func:`math.ceil()` and :func:`math.trunc()`
+Optimized :func:`math.floor`, :func:`math.ceil` and :func:`math.trunc`
 for floats.
 
 ..
@@ -299,7 +299,7 @@ Check the error from the system's underlying ``crypt`` or ``crypt_r``.
 .. section: Core and Builtins
 
 On FreeBSD, Python no longer calls ``fedisableexcept()`` at startup to
-control the floating point control mode. The call became useless since
+control the floating-point control mode. The call became useless since
 FreeBSD 6: it became the default mode.
 
 ..
@@ -1384,7 +1384,7 @@ Nested subclasses of :class:`typing.NamedTuple` are now pickleable.
 .. nonce: hwrPN7
 .. section: Library
 
-Prevent :exc:`KeyError` thrown by :func:`_encoded_words.decode` when given
+Prevent :exc:`KeyError` thrown by :func:`!_encoded_words.decode` when given
 an encoded-word with invalid content-type encoding from propagating all the
 way to :func:`email.message.get`.
 
@@ -1395,8 +1395,8 @@ way to :func:`email.message.get`.
 .. nonce: S6Klvm
 .. section: Library
 
-Deprecated the ``split()`` method in :class:`_tkinter.TkappType` in favour
-of the ``splitlist()`` method which has more consistent and predicable
+Deprecated the ``split()`` method in :class:`!_tkinter.TkappType` in favour
+of the ``splitlist()`` method which has more consistent and predictable
 behavior.
 
 ..
@@ -2990,7 +2990,7 @@ mode.
 .. nonce: FRGH4I
 .. section: Library
 
-:func:`ctypes.create_unicode_buffer()` now also supports non-BMP characters
+:func:`ctypes.create_unicode_buffer` now also supports non-BMP characters
 on platforms with 16-bit :c:type:`wchar_t` (for example, Windows and AIX).
 
 ..
@@ -3013,7 +3013,7 @@ thread was still running.
 .. section: Library
 
 Allow pure Python implementation of :mod:`pickle` to work even when the C
-:mod:`_pickle` module is unavailable.
+:mod:`!_pickle` module is unavailable.
 
 ..
 
@@ -3054,7 +3054,7 @@ Change the format of feature_version to be a (major, minor) tuple.
 .. nonce: 5_mJkQ
 .. section: Library
 
-Eliminate :exc:`RuntimeError` raised by :func:`asyncio.all_tasks()` if
+Eliminate :exc:`RuntimeError` raised by :func:`asyncio.all_tasks` if
 internal tasks weak set is changed by another thread during iteration.
 
 ..
@@ -3064,8 +3064,8 @@ internal tasks weak set is changed by another thread during iteration.
 .. nonce: ADqCkq
 .. section: Library
 
-:class:`_pyio.IOBase` destructor now does nothing if getting the ``closed``
-attribute fails to better mimic :class:`_io.IOBase` finalizer.
+:class:`!_pyio.IOBase` destructor now does nothing if getting the ``closed``
+attribute fails to better mimic :class:`!_io.IOBase` finalizer.
 
 ..
 
@@ -3536,7 +3536,7 @@ Add :meth:`~pathlib.Path.readlink`. Patch by Girts Folkmanis.
 .. nonce: La3TZz
 .. section: Library
 
-Made :func:`urllib.parse.unquote()` accept bytes in addition to strings.
+Made :func:`urllib.parse.unquote` accept bytes in addition to strings.
 Patch by Stein Karlsen.
 
 ..
@@ -3839,7 +3839,7 @@ Added possible exceptions to the description of os.chdir().
 .. nonce: r_wGRc
 .. section: Documentation
 
-Documented that in :meth:`datetime.datetime.strptime()`, the leading zero in
+Documented that in :meth:`datetime.datetime.strptime`, the leading zero in
 some two-digit formats is optional. Patch by Mike Gleen.
 
 ..
@@ -4993,7 +4993,7 @@ Make :const:`winreg.REG_MULTI_SZ` support zero-length strings.
 .. section: Windows
 
 Replace use of :c:func:`strcasecmp` for the system function
-:c:func:`_stricmp`. Patch by Minmin Gong.
+:c:func:`!_stricmp`. Patch by Minmin Gong.
 
 ..
 
@@ -5696,8 +5696,8 @@ Add :c:func:`PyConfig_SetWideStringList` function.
 .. section: C API
 
 Add fast functions for calling methods:
-:c:func:`_PyObject_VectorcallMethod`, :c:func:`_PyObject_CallMethodNoArgs`
-and :c:func:`_PyObject_CallMethodOneArg`.
+:c:func:`!_PyObject_VectorcallMethod`, :c:func:`!_PyObject_CallMethodNoArgs`
+and :c:func:`!_PyObject_CallMethodOneArg`.
 
 ..
 
diff --git a/Misc/NEWS.d/3.9.0a4.rst b/Misc/NEWS.d/3.9.0a4.rst
index ca0eb2abf1d654..cce0c4c9acdf1b 100644
--- a/Misc/NEWS.d/3.9.0a4.rst
+++ b/Misc/NEWS.d/3.9.0a4.rst
@@ -755,7 +755,7 @@ dependencies.
 .. nonce: X7FRaN
 .. section: Windows
 
-:meth:`~pathlib.Path.home()` and :meth:`~pathlib.Path.expanduser()` on
+:meth:`~pathlib.Path.home` and :meth:`~pathlib.Path.expanduser` on
 Windows now prefer :envvar:`USERPROFILE` and no longer use :envvar:`HOME`,
 which is not normally set for regular user accounts. This makes them again
 behave like :func:`os.path.expanduser`, which was changed to ignore
diff --git a/Misc/NEWS.d/3.9.0a5.rst b/Misc/NEWS.d/3.9.0a5.rst
index 7f7480539f2f1b..9402e5077c2e77 100644
--- a/Misc/NEWS.d/3.9.0a5.rst
+++ b/Misc/NEWS.d/3.9.0a5.rst
@@ -548,7 +548,7 @@ large for an AF_UNIX socket address. Patch by Pablo Galindo.
 .. nonce: mxr5m8
 .. section: Library
 
-:func:`ast.dump()` no longer outputs optional fields and attributes with
+:func:`ast.dump` no longer outputs optional fields and attributes with
 default values. The default values for optional fields and attributes of AST
 nodes are now set as class attributes (e.g. ``Constant.kind`` is set to
 ``None``).
diff --git a/Misc/NEWS.d/3.9.0a6.rst b/Misc/NEWS.d/3.9.0a6.rst
index 466ff624fcbf81..11309fccc0a20c 100644
--- a/Misc/NEWS.d/3.9.0a6.rst
+++ b/Misc/NEWS.d/3.9.0a6.rst
@@ -111,7 +111,7 @@ str.decode().
 .. nonce: m15TTX
 .. section: Core and Builtins
 
-Fix possible refleaks in :mod:`_json`, memo of PyScannerObject should be
+Fix possible refleaks in :mod:`!_json`, memo of PyScannerObject should be
 traversed.
 
 ..
@@ -403,7 +403,7 @@ after encoding it to utf-8, not before.
 .. nonce: pDZR6V
 .. section: Library
 
-Added :meth:`pathlib.Path.with_stem()` to create a new Path with the stem
+Added :meth:`pathlib.Path.with_stem` to create a new Path with the stem
 replaced.
 
 ..
@@ -635,7 +635,7 @@ script is killed by signal 11, it now logs: "CGI script exit code -11."
 .. section: Library
 
 Improve the error message when triying to import a module using :mod:`runpy`
-and incorrently use the ".py" extension at the end of the module name. Patch
+and incorrectly using the ".py" extension at the end of the module name. Patch
 by Pablo Galindo.
 
 ..
@@ -666,8 +666,8 @@ for _main_thread, instead of a _DummyThread instance.
 .. nonce: VTq_8s
 .. section: Library
 
-Add a private ``_at_fork_reinit()`` method to :class:`_thread.Lock`,
-:class:`_thread.RLock`, :class:`threading.RLock` and
+Add a private ``_at_fork_reinit()`` method to :class:`!_thread.Lock`,
+:class:`!_thread.RLock`, :class:`threading.RLock` and
 :class:`threading.Condition` classes: reinitialize the lock at fork in the
 child process, reset the lock to the unlocked state. Rename also the private
 ``_reset_internal_locks()`` method of :class:`threading.Event` to
@@ -866,7 +866,7 @@ of source of the class. Patch by Karthikeyan Singaravelan.
 .. nonce: vHC7YQ
 .. section: Library
 
-Deprecate passing None as an argument for :func:`shlex.split()`'s ``s``
+Deprecate passing None as an argument for :func:`shlex.split`'s ``s``
 parameter.  Patch by Zackery Spytz.
 
 ..
diff --git a/Misc/NEWS.d/3.9.0b1.rst b/Misc/NEWS.d/3.9.0b1.rst
index 40fb8474bf9364..9a3630ddf216a8 100644
--- a/Misc/NEWS.d/3.9.0b1.rst
+++ b/Misc/NEWS.d/3.9.0b1.rst
@@ -532,7 +532,7 @@ Remove ``_random.Random.randbytes()``: the C implementation of
 .. section: Library
 
 Added default arguments to
-:meth:`difflib.SequenceMatcher.find_longest_match()`.
+:meth:`difflib.SequenceMatcher.find_longest_match`.
 
 ..
 
diff --git a/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst b/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst
new file mode 100644
index 00000000000000..3fc1d8a1b51d30
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2024-12-12-17-21-45.gh-issue-127865.30GDzs.rst
@@ -0,0 +1 @@
+Fix build failure on systems without thread-locals support.
diff --git a/Misc/NEWS.d/next/Build/2024-12-28-21-05-19.gh-issue-128321.0UvbXw.rst b/Misc/NEWS.d/next/Build/2024-12-28-21-05-19.gh-issue-128321.0UvbXw.rst
new file mode 100644
index 00000000000000..ed72cc8ab1449a
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2024-12-28-21-05-19.gh-issue-128321.0UvbXw.rst
@@ -0,0 +1,3 @@
+Set ``LIBS`` instead of ``LDFLAGS`` when checking if :mod:`sqlite3` library
+functions are available. This fixes the ordering of linked libraries during
+checks, which was incorrect when using a statically linked ``libsqlite3``.
diff --git a/Misc/NEWS.d/next/Build/2025-01-02-11-02-45.gh-issue-123925.TLlyUi.rst b/Misc/NEWS.d/next/Build/2025-01-02-11-02-45.gh-issue-123925.TLlyUi.rst
new file mode 100644
index 00000000000000..a2a9c6fc7680b5
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-01-02-11-02-45.gh-issue-123925.TLlyUi.rst
@@ -0,0 +1,2 @@
+Fix building the :mod:`curses` module on platforms with libncurses but
+without libncursesw.
diff --git a/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
new file mode 100644
index 00000000000000..c6233e1f2d8693
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
@@ -0,0 +1,2 @@
+Skip BOLT optimization of functions using computed gotos, fixing errors on
+build with LLVM 19.
diff --git a/Misc/NEWS.d/next/C API/2024-12-10-14-25-22.gh-issue-127791.YRw4GU.rst b/Misc/NEWS.d/next/C API/2024-12-10-14-25-22.gh-issue-127791.YRw4GU.rst
new file mode 100644
index 00000000000000..70751f18f5cf17
--- /dev/null
+++ b/Misc/NEWS.d/next/C API/2024-12-10-14-25-22.gh-issue-127791.YRw4GU.rst	
@@ -0,0 +1,2 @@
+Fix loss of callbacks after more than one call to
+:c:func:`PyUnstable_AtExit`.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-12-03-21-07-06.gh-issue-127536.3jMMrT.rst b/Misc/NEWS.d/next/Core and Builtins/2024-12-03-21-07-06.gh-issue-127536.3jMMrT.rst
new file mode 100644
index 00000000000000..6e2b87fe38146b
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-12-03-21-07-06.gh-issue-127536.3jMMrT.rst	
@@ -0,0 +1,2 @@
+Add missing locks around some list assignment operations in the free
+threading build.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-12-04-09-52-08.gh-issue-127434.RjkGT_.rst b/Misc/NEWS.d/next/Core and Builtins/2024-12-04-09-52-08.gh-issue-127434.RjkGT_.rst
new file mode 100644
index 00000000000000..08b27a7890bb1c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-12-04-09-52-08.gh-issue-127434.RjkGT_.rst	
@@ -0,0 +1 @@
+The iOS compiler shims can now accept arguments with spaces.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-12-05-19-25-00.gh-issue-127582.ogUY2a.rst b/Misc/NEWS.d/next/Core and Builtins/2024-12-05-19-25-00.gh-issue-127582.ogUY2a.rst
new file mode 100644
index 00000000000000..59491feeb9bcfa
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-12-05-19-25-00.gh-issue-127582.ogUY2a.rst	
@@ -0,0 +1,2 @@
+Fix non-thread-safe object resurrection when calling finalizers and watcher
+callbacks in the free threading build.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-12-06-01-09-40.gh-issue-127651.80cm6j.rst b/Misc/NEWS.d/next/Core and Builtins/2024-12-06-01-09-40.gh-issue-127651.80cm6j.rst
new file mode 100644
index 00000000000000..92b18b082eb30e
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-12-06-01-09-40.gh-issue-127651.80cm6j.rst	
@@ -0,0 +1 @@
+When raising :exc:`ImportError` for missing symbols in ``from`` imports, use ``__file__`` in the error message if ``__spec__.origin`` is not a location
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-10-28-13-18-16.gh-issue-126076.MebZuS.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-10-28-13-18-16.gh-issue-126076.MebZuS.rst
new file mode 100644
index 00000000000000..5108ca52b202c4
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-10-28-13-18-16.gh-issue-126076.MebZuS.rst
@@ -0,0 +1,3 @@
+Relocated objects such as ``tuple``, ``bytes`` and ``str`` objects are
+properly tracked by :mod:`tracemalloc` and its associated hooks. Patch by
+Pablo Galindo.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-11-30-16-13-31.gh-issue-127349.ssYd6n.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-11-30-16-13-31.gh-issue-127349.ssYd6n.rst
new file mode 100644
index 00000000000000..3c1586b6cbb8e7
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-11-30-16-13-31.gh-issue-127349.ssYd6n.rst
@@ -0,0 +1,2 @@
+Fixed the error when resizing terminal in Python REPL. Patch by Semyon
+Moroz.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-02-18-15-37.gh-issue-126862.fdIK7T.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-02-18-15-37.gh-issue-126862.fdIK7T.rst
new file mode 100644
index 00000000000000..d930c2963e3632
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-02-18-15-37.gh-issue-126862.fdIK7T.rst
@@ -0,0 +1,2 @@
+Fix a possible overflow when a class inherits from an absurd number of
+super-classes. Reported by Valery Fedorenko. Patch by Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-07-13-06-09.gh-issue-127599.tXCZb_.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-07-13-06-09.gh-issue-127599.tXCZb_.rst
new file mode 100644
index 00000000000000..565ecb82c71926
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-07-13-06-09.gh-issue-127599.tXCZb_.rst
@@ -0,0 +1,2 @@
+Fix statistics for increments of object reference counts (in particular, when
+a reference count was increased by more than 1 in a single operation).
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-13-14-17-24.gh-issue-127903.vemHSl.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-13-14-17-24.gh-issue-127903.vemHSl.rst
new file mode 100644
index 00000000000000..ad479b52d1675c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-13-14-17-24.gh-issue-127903.vemHSl.rst
@@ -0,0 +1,2 @@
+``Objects/unicodeobject.c``: fix a crash on DEBUG builds in ``_copy_characters``
+when there is nothing to copy.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-17-22-28-15.gh-issue-128030.H1ptOD.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-17-22-28-15.gh-issue-128030.H1ptOD.rst
new file mode 100644
index 00000000000000..93d78632355b76
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-17-22-28-15.gh-issue-128030.H1ptOD.rst
@@ -0,0 +1 @@
+Avoid error from calling ``PyModule_GetFilenameObject`` on a non-module object when importing a non-existent symbol from a non-module object.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-18-14-22-48.gh-issue-128079.SUD5le.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-18-14-22-48.gh-issue-128079.SUD5le.rst
new file mode 100644
index 00000000000000..8da4e677f068a3
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-18-14-22-48.gh-issue-128079.SUD5le.rst
@@ -0,0 +1,5 @@
+Fix a bug where :keyword:`except* <except_star>` does not properly check the
+return value of an :exc:`ExceptionGroup`'s :meth:`~BaseExceptionGroup.split`
+function, leading to a crash in some cases. Now when :meth:`~BaseExceptionGroup.split`
+returns an invalid object, :keyword:`except* <except_star>` raises a :exc:`TypeError`
+with the original raised :exc:`ExceptionGroup` object chained to it.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst
new file mode 100644
index 00000000000000..8fe628d18f4bd4
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst
@@ -0,0 +1 @@
+Restore terminal control characters on REPL exit.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-01-11-12-39-17.gh-issue-128717.i65d06.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-11-12-39-17.gh-issue-128717.i65d06.rst
new file mode 100644
index 00000000000000..212c6d3cb97216
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-11-12-39-17.gh-issue-128717.i65d06.rst
@@ -0,0 +1,2 @@
+Fix a crash when setting the recursion limit while other threads are active
+on the :term:`free threaded <free threading>` build.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-01-13-12-48-30.gh-issue-128078.qOsl9B.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-13-12-48-30.gh-issue-128078.qOsl9B.rst
new file mode 100644
index 00000000000000..498864a0aa3145
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-13-12-48-30.gh-issue-128078.qOsl9B.rst
@@ -0,0 +1,2 @@
+Fix a :exc:`SystemError` when using :func:`anext` with a default tuple
+value. Patch by Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-01-18-01-06-58.gh-issue-128799.vSNagk.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-18-01-06-58.gh-issue-128799.vSNagk.rst
new file mode 100644
index 00000000000000..eb2361bb5d4525
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-18-01-06-58.gh-issue-128799.vSNagk.rst
@@ -0,0 +1 @@
+Add frame of ``except*`` to traceback when it wraps a naked exception.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-19-48-30.gh-issue-124363.vOFhHW.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-19-48-30.gh-issue-124363.vOFhHW.rst
new file mode 100644
index 00000000000000..553aa5a4dd573e
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-19-48-30.gh-issue-124363.vOFhHW.rst
@@ -0,0 +1 @@
+Treat debug expressions in f-string as raw strings. Patch by Pablo Galindo
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-23-35-41.gh-issue-129093.0rvETC.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-23-35-41.gh-issue-129093.0rvETC.rst
new file mode 100644
index 00000000000000..067d52eff2da1e
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-01-21-23-35-41.gh-issue-129093.0rvETC.rst
@@ -0,0 +1,2 @@
+Fix f-strings such as ``f'{expr=}'`` sometimes not displaying the full
+expression when the expression contains ``!=``.
diff --git a/Misc/NEWS.d/next/Documentation/2025-01-14-11-06-41.gh-issue-67206.LYKmi5.rst b/Misc/NEWS.d/next/Documentation/2025-01-14-11-06-41.gh-issue-67206.LYKmi5.rst
new file mode 100644
index 00000000000000..11fb617e98edc3
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2025-01-14-11-06-41.gh-issue-67206.LYKmi5.rst
@@ -0,0 +1,3 @@
+Document that :const:`string.printable` is not printable in the POSIX sense.
+In particular, :meth:`string.printable.isprintable() <str.isprintable>` returns
+:const:`False`. Patch by Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Documentation/2025-01-16-18-59-11.gh-issue-125722.eHHRga.rst b/Misc/NEWS.d/next/Documentation/2025-01-16-18-59-11.gh-issue-125722.eHHRga.rst
new file mode 100644
index 00000000000000..bf6253eed2eb90
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2025-01-16-18-59-11.gh-issue-125722.eHHRga.rst
@@ -0,0 +1,2 @@
+Require Sphinx 8.1.3 or later to build the Python documentation. Patch by
+Adam Turner.
diff --git a/Misc/NEWS.d/next/Library/2024-07-14-23-19-20.gh-issue-119257.9OEzcN.rst b/Misc/NEWS.d/next/Library/2024-07-14-23-19-20.gh-issue-119257.9OEzcN.rst
new file mode 100644
index 00000000000000..8f3f863d93e021
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-07-14-23-19-20.gh-issue-119257.9OEzcN.rst
@@ -0,0 +1,2 @@
+Show tab completions menu below the current line, which results in less
+janky behaviour, and fixes a cursor movement bug. Patch by Daniel Hollas
diff --git a/Misc/NEWS.d/next/Library/2024-07-30-11-37-40.gh-issue-122431.lAzVtu.rst b/Misc/NEWS.d/next/Library/2024-07-30-11-37-40.gh-issue-122431.lAzVtu.rst
new file mode 100644
index 00000000000000..16ad75792aefa2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-07-30-11-37-40.gh-issue-122431.lAzVtu.rst
@@ -0,0 +1 @@
+:func:`readline.append_history_file` now raises a :exc:`ValueError` when given a negative value.
diff --git a/Misc/NEWS.d/next/Library/2024-08-27-18-58-01.gh-issue-123401.t4-FpI.rst b/Misc/NEWS.d/next/Library/2024-08-27-18-58-01.gh-issue-123401.t4-FpI.rst
new file mode 100644
index 00000000000000..638f3f76239ca6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-08-27-18-58-01.gh-issue-123401.t4-FpI.rst
@@ -0,0 +1,3 @@
+The :mod:`http.cookies` module now supports parsing obsolete :rfc:`850`
+date formats, in accordance with :rfc:`9110` requirements.
+Patch by Nano Zheng.
diff --git a/Misc/NEWS.d/next/Library/2024-09-12-14-24-25.gh-issue-123987.7_OD1p.rst b/Misc/NEWS.d/next/Library/2024-09-12-14-24-25.gh-issue-123987.7_OD1p.rst
new file mode 100644
index 00000000000000..b110900e7efd33
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-09-12-14-24-25.gh-issue-123987.7_OD1p.rst
@@ -0,0 +1,3 @@
+Fixed issue in NamespaceReader where a non-path item in a namespace path,
+such as a sentinel added by an editable installer, would break resource
+loading.
diff --git a/Misc/NEWS.d/next/Library/2024-10-26-16-59-02.gh-issue-125553.4pDLzt.rst b/Misc/NEWS.d/next/Library/2024-10-26-16-59-02.gh-issue-125553.4pDLzt.rst
new file mode 100644
index 00000000000000..291c5e6f6f2181
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-10-26-16-59-02.gh-issue-125553.4pDLzt.rst
@@ -0,0 +1,2 @@
+Fix round-trip invariance for backslash continuations in
+:func:`tokenize.untokenize`.
diff --git a/Misc/NEWS.d/next/Library/2024-10-31-14-31-36.gh-issue-126225.vTxGXm.rst b/Misc/NEWS.d/next/Library/2024-10-31-14-31-36.gh-issue-126225.vTxGXm.rst
new file mode 100644
index 00000000000000..13a1f213c7a58e
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-10-31-14-31-36.gh-issue-126225.vTxGXm.rst
@@ -0,0 +1,6 @@
+:mod:`getopt` and :mod:`optparse` are no longer marked as deprecated.
+There are legitimate reasons to use one of these modules in preference to
+:mod:`argparse`, and none of these modules are at risk of being removed
+from the standard library. Of the three, ``argparse`` remains the
+recommended default choice, *unless* one of the concerns noted at the top of
+the ``optparse`` module documentation applies.
diff --git a/Misc/NEWS.d/next/Library/2024-11-10-19-45-01.gh-issue-126332.WCCKoH.rst b/Misc/NEWS.d/next/Library/2024-11-10-19-45-01.gh-issue-126332.WCCKoH.rst
new file mode 100644
index 00000000000000..9277797ddc745e
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-10-19-45-01.gh-issue-126332.WCCKoH.rst
@@ -0,0 +1 @@
+Fix _pyrepl crash when entering a double CTRL-Z on an overflowing line.
diff --git a/Misc/NEWS.d/next/Library/2024-11-13-10-44-25.gh-issue-126775.a3ubjh.rst b/Misc/NEWS.d/next/Library/2024-11-13-10-44-25.gh-issue-126775.a3ubjh.rst
new file mode 100644
index 00000000000000..429fc2aa17bd42
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-13-10-44-25.gh-issue-126775.a3ubjh.rst
@@ -0,0 +1 @@
+Make :func:`linecache.checkcache` thread safe and GC re-entrancy safe.
diff --git a/Misc/NEWS.d/next/Library/2024-11-24-14-53-35.gh-issue-127196.8CBkUa.rst b/Misc/NEWS.d/next/Library/2024-11-24-14-53-35.gh-issue-127196.8CBkUa.rst
new file mode 100644
index 00000000000000..471f64d185deab
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-24-14-53-35.gh-issue-127196.8CBkUa.rst
@@ -0,0 +1,2 @@
+Fix crash when dict with keys in invalid encoding were passed to several
+functions in ``_interpreters`` module.
diff --git a/Misc/NEWS.d/next/Library/2024-11-28-14-14-46.gh-issue-127257.n6-jU9.rst b/Misc/NEWS.d/next/Library/2024-11-28-14-14-46.gh-issue-127257.n6-jU9.rst
new file mode 100644
index 00000000000000..fb0380cba0b607
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-28-14-14-46.gh-issue-127257.n6-jU9.rst
@@ -0,0 +1,2 @@
+In :mod:`ssl`, system call failures that OpenSSL reports using
+``ERR_LIB_SYS`` are now raised as :exc:`OSError`.
diff --git a/Misc/NEWS.d/next/Library/2024-12-03-14-45-16.gh-issue-98188.GX9i2b.rst b/Misc/NEWS.d/next/Library/2024-12-03-14-45-16.gh-issue-98188.GX9i2b.rst
new file mode 100644
index 00000000000000..30ab8cfc3f0bc6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-03-14-45-16.gh-issue-98188.GX9i2b.rst
@@ -0,0 +1,3 @@
+Fix an issue in :meth:`email.message.Message.get_payload` where data
+cannot be decoded if the Content Transfer Encoding mechanism contains
+trailing whitespaces or additional junk text. Patch by Hui Liu.
diff --git a/Misc/NEWS.d/next/Library/2024-12-03-20-28-08.gh-issue-127586.zgotYF.rst b/Misc/NEWS.d/next/Library/2024-12-03-20-28-08.gh-issue-127586.zgotYF.rst
new file mode 100644
index 00000000000000..80217bd4a10503
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-03-20-28-08.gh-issue-127586.zgotYF.rst
@@ -0,0 +1,3 @@
+:class:`multiprocessing.pool.Pool` now properly restores blocked signal handlers
+of the parent thread when creating processes via either *spawn* or
+*forkserver*.
diff --git a/Misc/NEWS.d/next/Library/2024-12-04-10-39-29.gh-issue-83662.CG1s3m.rst b/Misc/NEWS.d/next/Library/2024-12-04-10-39-29.gh-issue-83662.CG1s3m.rst
new file mode 100644
index 00000000000000..5e39933047993c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-04-10-39-29.gh-issue-83662.CG1s3m.rst
@@ -0,0 +1,5 @@
+Add missing ``__class_getitem__`` method to the Python implementation of
+:func:`functools.partial`, to make it compatible with the C version. This is
+mainly relevant for alternative Python implementations like PyPy and
+GraalPy, because CPython will usually use the C-implementation of that
+function.
diff --git a/Misc/NEWS.d/next/Library/2024-12-04-11-01-16.gh-issue-93312.9sB-Qw.rst b/Misc/NEWS.d/next/Library/2024-12-04-11-01-16.gh-issue-93312.9sB-Qw.rst
new file mode 100644
index 00000000000000..e245fa2bdd00b4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-04-11-01-16.gh-issue-93312.9sB-Qw.rst
@@ -0,0 +1,2 @@
+Include ``<sys/pidfd.h>`` to get ``os.PIDFD_NONBLOCK`` constant. Patch by
+Victor Stinner.
diff --git a/Misc/NEWS.d/next/Library/2024-12-04-15-04-12.gh-issue-126821.lKCLVV.rst b/Misc/NEWS.d/next/Library/2024-12-04-15-04-12.gh-issue-126821.lKCLVV.rst
new file mode 100644
index 00000000000000..677acf5baab3fa
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-04-15-04-12.gh-issue-126821.lKCLVV.rst
@@ -0,0 +1,2 @@
+macOS and iOS apps can now choose to redirect stdout and stderr to the
+system log during interpreter configuration.
diff --git a/Misc/NEWS.d/next/Library/2024-12-08-08-36-18.gh-issue-127732.UEKxoa.rst b/Misc/NEWS.d/next/Library/2024-12-08-08-36-18.gh-issue-127732.UEKxoa.rst
new file mode 100644
index 00000000000000..44821300f6e4e6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-08-08-36-18.gh-issue-127732.UEKxoa.rst
@@ -0,0 +1 @@
+The :mod:`platform` module now correctly detects Windows Server 2025.
diff --git a/Misc/NEWS.d/next/Library/2024-12-12-07-27-51.gh-issue-127847.ksfNKM.rst b/Misc/NEWS.d/next/Library/2024-12-12-07-27-51.gh-issue-127847.ksfNKM.rst
new file mode 100644
index 00000000000000..3d6e36fb538bca
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-12-07-27-51.gh-issue-127847.ksfNKM.rst
@@ -0,0 +1 @@
+Fix the position when doing interleaved seeks and reads in uncompressed, unencrypted zip files returned by :meth:`zipfile.ZipFile.open`.
diff --git a/Misc/NEWS.d/next/Library/2024-12-12-16-59-42.gh-issue-127870._NFG-3.rst b/Misc/NEWS.d/next/Library/2024-12-12-16-59-42.gh-issue-127870._NFG-3.rst
new file mode 100644
index 00000000000000..99b2df00032082
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-12-16-59-42.gh-issue-127870._NFG-3.rst
@@ -0,0 +1,2 @@
+Detect recursive calls in ctypes ``_as_parameter_`` handling.
+Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/next/Library/2024-12-12-18-25-50.gh-issue-127873.WJRwfz.rst b/Misc/NEWS.d/next/Library/2024-12-12-18-25-50.gh-issue-127873.WJRwfz.rst
new file mode 100644
index 00000000000000..d7575c7efb6e88
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-12-18-25-50.gh-issue-127873.WJRwfz.rst
@@ -0,0 +1,3 @@
+When ``-E`` is set, only ignore ``PYTHON_COLORS`` and not
+``FORCE_COLOR``/``NO_COLOR``/``TERM`` when colourising output.
+Patch by Hugo van Kemenade.
diff --git a/Misc/NEWS.d/next/Library/2024-12-17-12-41-07.gh-issue-126742.l07qvT.rst b/Misc/NEWS.d/next/Library/2024-12-17-12-41-07.gh-issue-126742.l07qvT.rst
new file mode 100644
index 00000000000000..70f7cc129f66e3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-17-12-41-07.gh-issue-126742.l07qvT.rst
@@ -0,0 +1,3 @@
+Fix support of localized error messages reported by :manpage:`dlerror(3)` and
+:manpage:`gdbm_strerror <gdbm(3)>` in :mod:`ctypes` and :mod:`dbm.gnu`
+functions respectively. Patch by Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Library/2024-12-17-13-21-52.gh-issue-127060.mv2bX6.rst b/Misc/NEWS.d/next/Library/2024-12-17-13-21-52.gh-issue-127060.mv2bX6.rst
new file mode 100644
index 00000000000000..1da89e7a282147
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-17-13-21-52.gh-issue-127060.mv2bX6.rst
@@ -0,0 +1,2 @@
+Set TERM environment variable to "dumb" to disable traceback colors in IDLE,
+since IDLE doesn't understand ANSI escape sequences. Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/next/Library/2024-12-17-15-23-40.gh-issue-41872.31LjKY.rst b/Misc/NEWS.d/next/Library/2024-12-17-15-23-40.gh-issue-41872.31LjKY.rst
new file mode 100644
index 00000000000000..b807dcb284c248
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-17-15-23-40.gh-issue-41872.31LjKY.rst
@@ -0,0 +1,3 @@
+Fix quick extraction of module docstrings from a file in :mod:`pydoc`.
+It now supports docstrings with single quotes, escape sequences,
+raw string literals, and other Python syntax.
diff --git a/Misc/NEWS.d/next/Library/2024-12-18-00-07-50.gh-issue-128014.F3aUbz.rst b/Misc/NEWS.d/next/Library/2024-12-18-00-07-50.gh-issue-128014.F3aUbz.rst
new file mode 100644
index 00000000000000..ef339a291f0ddd
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-18-00-07-50.gh-issue-128014.F3aUbz.rst
@@ -0,0 +1,2 @@
+Fix resetting the default window icon by passing ``default=''`` to the
+:mod:`tkinter` method :meth:`!wm_iconbitmap`.
diff --git a/Misc/NEWS.d/next/Library/2024-12-18-10-18-55.gh-issue-128062.E9oU7-.rst b/Misc/NEWS.d/next/Library/2024-12-18-10-18-55.gh-issue-128062.E9oU7-.rst
new file mode 100644
index 00000000000000..d8e262e0848077
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-18-10-18-55.gh-issue-128062.E9oU7-.rst
@@ -0,0 +1,2 @@
+Revert the font of :mod:`turtledemo`'s menu bar to its default value and
+display the shortcut keys in the correct position.
diff --git a/Misc/NEWS.d/next/Library/2024-12-20-15-19-38.gh-issue-112328.d9GfLR.rst b/Misc/NEWS.d/next/Library/2024-12-20-15-19-38.gh-issue-112328.d9GfLR.rst
new file mode 100644
index 00000000000000..96da94a9f211af
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-20-15-19-38.gh-issue-112328.d9GfLR.rst
@@ -0,0 +1 @@
+:class:`enum.EnumDict` can now be used without resorting to private API.
diff --git a/Misc/NEWS.d/next/Library/2024-12-21-03-20-12.gh-issue-128131.QpPmNt.rst b/Misc/NEWS.d/next/Library/2024-12-21-03-20-12.gh-issue-128131.QpPmNt.rst
new file mode 100644
index 00000000000000..f4c4ebce10729c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-21-03-20-12.gh-issue-128131.QpPmNt.rst
@@ -0,0 +1,2 @@
+Completely support random access of uncompressed unencrypted read-only
+zip files obtained by :meth:`ZipFile.open <zipfile.ZipFile.open>`.
diff --git a/Misc/NEWS.d/next/Library/2024-12-23-02-09-44.gh-issue-58956.4OdMdT.rst b/Misc/NEWS.d/next/Library/2024-12-23-02-09-44.gh-issue-58956.4OdMdT.rst
new file mode 100644
index 00000000000000..b78bc5aaf44217
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-23-02-09-44.gh-issue-58956.4OdMdT.rst
@@ -0,0 +1 @@
+Fixed a frame reference leak in :mod:`bdb`.
diff --git a/Misc/NEWS.d/next/Library/2024-12-26-11-00-03.gh-issue-112064.mCcw3B.rst b/Misc/NEWS.d/next/Library/2024-12-26-11-00-03.gh-issue-112064.mCcw3B.rst
new file mode 100644
index 00000000000000..e885add7b68c0f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-26-11-00-03.gh-issue-112064.mCcw3B.rst
@@ -0,0 +1,2 @@
+Fix incorrect handling of negative read sizes in :meth:`HTTPResponse.read
+<http.client.HTTPResponse.read>`. Patch by Yury Manushkin.
diff --git a/Misc/NEWS.d/next/Library/2024-12-27-16-28-57.gh-issue-128302.2GMvyl.rst b/Misc/NEWS.d/next/Library/2024-12-27-16-28-57.gh-issue-128302.2GMvyl.rst
new file mode 100644
index 00000000000000..56e2fe6f85f4bf
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-27-16-28-57.gh-issue-128302.2GMvyl.rst
@@ -0,0 +1,3 @@
+Allow :meth:`!xml.dom.xmlbuilder.DOMParser.parse` to correctly handle
+:class:`!xml.dom.xmlbuilder.DOMInputSource` instances that only have a
+:attr:`!systemId` attribute set.
diff --git a/Misc/NEWS.d/next/Library/2024-12-29-13-49-46.gh-issue-128302.psRpPN.rst b/Misc/NEWS.d/next/Library/2024-12-29-13-49-46.gh-issue-128302.psRpPN.rst
new file mode 100644
index 00000000000000..98c07297b06f8a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-29-13-49-46.gh-issue-128302.psRpPN.rst
@@ -0,0 +1,2 @@
+Fix :meth:`!xml.dom.xmlbuilder.DOMEntityResolver.resolveEntity`, which was
+broken by the Python 3.0 transition.
diff --git a/Misc/NEWS.d/next/Library/2024-12-30-20-48-28.gh-issue-88834.RIvgwc.rst b/Misc/NEWS.d/next/Library/2024-12-30-20-48-28.gh-issue-88834.RIvgwc.rst
new file mode 100644
index 00000000000000..ca43f914880ba3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-12-30-20-48-28.gh-issue-88834.RIvgwc.rst
@@ -0,0 +1,3 @@
+Unify the instance check for :class:`typing.Union` and
+:class:`types.UnionType`: :class:`!Union` now uses the instance checks
+against its parameters instead of the subclass checks.
diff --git a/Misc/NEWS.d/next/Library/2025-01-02-13-05-16.gh-issue-128400.5N43fF.rst b/Misc/NEWS.d/next/Library/2025-01-02-13-05-16.gh-issue-128400.5N43fF.rst
new file mode 100644
index 00000000000000..4033dea4eaf7bf
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-02-13-05-16.gh-issue-128400.5N43fF.rst
@@ -0,0 +1,2 @@
+Fix crash when using :func:`faulthandler.dump_traceback` while other threads
+are active on the :term:`free threaded <free threading>` build.
diff --git a/Misc/NEWS.d/next/Library/2025-01-04-11-10-04.gh-issue-128479.jvOrF-.rst b/Misc/NEWS.d/next/Library/2025-01-04-11-10-04.gh-issue-128479.jvOrF-.rst
new file mode 100644
index 00000000000000..fc3b4d5a5273a6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-04-11-10-04.gh-issue-128479.jvOrF-.rst
@@ -0,0 +1 @@
+Fix :func:`!asyncio.staggered.staggered_race` leaking tasks and issuing an unhandled exception.
diff --git a/Misc/NEWS.d/next/Library/2025-01-06-18-41-08.gh-issue-128552.fV-f8j.rst b/Misc/NEWS.d/next/Library/2025-01-06-18-41-08.gh-issue-128552.fV-f8j.rst
new file mode 100644
index 00000000000000..83816f775da9c5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-06-18-41-08.gh-issue-128552.fV-f8j.rst
@@ -0,0 +1 @@
+Fix cyclic garbage introduced by :meth:`asyncio.loop.create_task` and :meth:`asyncio.TaskGroup.create_task` holding a reference to the created task if it is eager.
diff --git a/Misc/NEWS.d/next/Library/2025-01-07-21-48-32.gh-issue-128498.n6jtlW.rst b/Misc/NEWS.d/next/Library/2025-01-07-21-48-32.gh-issue-128498.n6jtlW.rst
new file mode 100644
index 00000000000000..9a241e37c20a44
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-07-21-48-32.gh-issue-128498.n6jtlW.rst
@@ -0,0 +1,2 @@
+Default to stdout isatty for color detection instead of stderr. Patch by
+Hugo van Kemenade.
diff --git a/Misc/NEWS.d/next/Library/2025-01-08-03-09-29.gh-issue-128562.Mlv-yO.rst b/Misc/NEWS.d/next/Library/2025-01-08-03-09-29.gh-issue-128562.Mlv-yO.rst
new file mode 100644
index 00000000000000..eb50dded67bea8
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-08-03-09-29.gh-issue-128562.Mlv-yO.rst
@@ -0,0 +1 @@
+Fix possible conflicts in generated :mod:`tkinter` widget names if the widget class name ends with a digit.
diff --git a/Misc/NEWS.d/next/Library/2025-01-08-22-30-38.gh-issue-128636.jQfWXj.rst b/Misc/NEWS.d/next/Library/2025-01-08-22-30-38.gh-issue-128636.jQfWXj.rst
new file mode 100644
index 00000000000000..80c9840b585530
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-08-22-30-38.gh-issue-128636.jQfWXj.rst
@@ -0,0 +1,2 @@
+Fix PyREPL failure when :data:`os.environ` is overwritten with an invalid
+value.
diff --git a/Misc/NEWS.d/next/Library/2025-01-10-15-43-52.gh-issue-128679.KcfVVR.rst b/Misc/NEWS.d/next/Library/2025-01-10-15-43-52.gh-issue-128679.KcfVVR.rst
new file mode 100644
index 00000000000000..837f90df07a705
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-10-15-43-52.gh-issue-128679.KcfVVR.rst
@@ -0,0 +1,3 @@
+Fix :func:`tracemalloc.stop` race condition. Fix :mod:`tracemalloc` to
+support calling :func:`tracemalloc.stop` in one thread, while another thread
+is tracing memory allocations. Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/next/Library/2025-01-17-11-46-16.gh-issue-128916.GEePbO.rst b/Misc/NEWS.d/next/Library/2025-01-17-11-46-16.gh-issue-128916.GEePbO.rst
new file mode 100644
index 00000000000000..f2db341ef81621
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-17-11-46-16.gh-issue-128916.GEePbO.rst
@@ -0,0 +1,3 @@
+Do not attempt to set ``SO_REUSEPORT`` on sockets of address families
+other than ``AF_INET`` and ``AF_INET6``, as it is meaningless with these
+address families, and the call with fail with Linux kernel 6.12.9 and newer.
diff --git a/Misc/NEWS.d/next/Library/2025-01-17-17-20-51.gh-issue-128894.gX1-8J.rst b/Misc/NEWS.d/next/Library/2025-01-17-17-20-51.gh-issue-128894.gX1-8J.rst
new file mode 100644
index 00000000000000..7e015103a95713
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-17-17-20-51.gh-issue-128894.gX1-8J.rst
@@ -0,0 +1,2 @@
+Fix ``traceback.TracebackException._format_syntax_error`` not to fail on
+exceptions with custom metadata.
diff --git a/Misc/NEWS.d/next/Library/2025-01-17-21-33-11.gh-issue-128961.XwvyIZ.rst b/Misc/NEWS.d/next/Library/2025-01-17-21-33-11.gh-issue-128961.XwvyIZ.rst
new file mode 100644
index 00000000000000..9c985df77743da
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-17-21-33-11.gh-issue-128961.XwvyIZ.rst
@@ -0,0 +1 @@
+Fix a crash when setting state on an exhausted :class:`array.array` iterator.
diff --git a/Misc/NEWS.d/next/Library/2025-01-18-11-04-44.gh-issue-128978.hwg7-w.rst b/Misc/NEWS.d/next/Library/2025-01-18-11-04-44.gh-issue-128978.hwg7-w.rst
new file mode 100644
index 00000000000000..521496d6a2f8c2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-18-11-04-44.gh-issue-128978.hwg7-w.rst
@@ -0,0 +1,2 @@
+Fix a :exc:`NameError` in :func:`!sysconfig.expand_makefile_vars`. Patch by
+Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Library/2025-01-18-16-58-10.gh-issue-128991.EzJit9.rst b/Misc/NEWS.d/next/Library/2025-01-18-16-58-10.gh-issue-128991.EzJit9.rst
new file mode 100644
index 00000000000000..64fa04fb53e89c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-18-16-58-10.gh-issue-128991.EzJit9.rst
@@ -0,0 +1 @@
+Release the enter frame reference within :mod:`bdb` callback
diff --git a/Misc/NEWS.d/next/Library/2025-01-20-13-12-39.gh-issue-128550.AJ5TOL.rst b/Misc/NEWS.d/next/Library/2025-01-20-13-12-39.gh-issue-128550.AJ5TOL.rst
new file mode 100644
index 00000000000000..f59feac795ea18
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-20-13-12-39.gh-issue-128550.AJ5TOL.rst
@@ -0,0 +1 @@
+Removed an incorrect optimization relating to eager tasks in :class:`asyncio.TaskGroup` that resulted in cancellations being missed.
diff --git a/Misc/NEWS.d/next/Library/2025-01-21-18-52-32.gh-issue-129061.4idD_B.rst b/Misc/NEWS.d/next/Library/2025-01-21-18-52-32.gh-issue-129061.4idD_B.rst
new file mode 100644
index 00000000000000..5c5c05e1161e86
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-21-18-52-32.gh-issue-129061.4idD_B.rst
@@ -0,0 +1 @@
+Fix FORCE_COLOR and NO_COLOR when empty strings. Patch by Hugo van Kemenade.
diff --git a/Misc/NEWS.d/next/Library/2025-01-27-14-05-19.gh-issue-129346.gZRd3g.rst b/Misc/NEWS.d/next/Library/2025-01-27-14-05-19.gh-issue-129346.gZRd3g.rst
new file mode 100644
index 00000000000000..b5377277f6c51c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-27-14-05-19.gh-issue-129346.gZRd3g.rst
@@ -0,0 +1,2 @@
+In :mod:`sqlite3`, handle out-of-memory when creating user-defined SQL
+functions.
diff --git a/Misc/NEWS.d/next/Library/2025-01-29-10-53-32.gh-issue-118761.i8wjpV.rst b/Misc/NEWS.d/next/Library/2025-01-29-10-53-32.gh-issue-118761.i8wjpV.rst
new file mode 100644
index 00000000000000..0762cbe5d63949
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-29-10-53-32.gh-issue-118761.i8wjpV.rst
@@ -0,0 +1,2 @@
+Improve import time of :mod:`subprocess` by lazy importing ``locale`` and
+``signal``. Patch by Taneli Hukkinen.
diff --git a/Misc/NEWS.d/next/Library/2025-01-29-14-30-54.gh-issue-129409.JZbOE6.rst b/Misc/NEWS.d/next/Library/2025-01-29-14-30-54.gh-issue-129409.JZbOE6.rst
new file mode 100644
index 00000000000000..7e00b44c0ef471
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-29-14-30-54.gh-issue-129409.JZbOE6.rst
@@ -0,0 +1,2 @@
+Fix an integer overflow in the :mod:`csv` module when writing a data field
+larger than 2GB.
diff --git a/Misc/NEWS.d/next/Library/2025-01-29-17-10-00.gh-issue-129403.314159.rst b/Misc/NEWS.d/next/Library/2025-01-29-17-10-00.gh-issue-129403.314159.rst
new file mode 100644
index 00000000000000..0c2bdd3136e3a3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-01-29-17-10-00.gh-issue-129403.314159.rst
@@ -0,0 +1 @@
+Corrected :exc:`ValueError` message for :class:`asyncio.Barrier` and :class:`threading.Barrier`.
diff --git a/Misc/NEWS.d/next/Security/2024-05-24-21-00-52.gh-issue-119511.jKrXQ8.rst b/Misc/NEWS.d/next/Security/2024-05-24-21-00-52.gh-issue-119511.jKrXQ8.rst
new file mode 100644
index 00000000000000..f7b4031120e643
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2024-05-24-21-00-52.gh-issue-119511.jKrXQ8.rst
@@ -0,0 +1,7 @@
+Fix a potential denial of service in the :mod:`imaplib` module. When connecting
+to a malicious server, it could cause an arbitrary amount of memory to be
+allocated. On many systems this is harmless as unused virtual memory is only a
+mapping, but if this hit a virtual address size limit it could lead to a
+:exc:`MemoryError` or other process crash. On unusual systems or builds where
+all allocated memory is touched and backed by actual ram or storage it could've
+consumed resources doing so until similarly crashing.
diff --git a/Misc/NEWS.d/next/Security/2024-08-06-11-43-08.gh-issue-80222.wfR4BU.rst b/Misc/NEWS.d/next/Security/2024-08-06-11-43-08.gh-issue-80222.wfR4BU.rst
new file mode 100644
index 00000000000000..0f0661d0b1cf4a
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2024-08-06-11-43-08.gh-issue-80222.wfR4BU.rst
@@ -0,0 +1,6 @@
+Fix bug in the folding of quoted strings when flattening an email message using
+a modern email policy. Previously when a quoted string was folded so that
+it spanned more than one line, the surrounding quotes and internal escapes
+would be omitted. This could theoretically be used to spoof header lines
+using a carefully constructed quoted string if the resulting rendered email
+was transmitted or re-parsed.
diff --git a/Misc/NEWS.d/next/Security/2024-12-05-21-35-19.gh-issue-127655.xpPoOf.rst b/Misc/NEWS.d/next/Security/2024-12-05-21-35-19.gh-issue-127655.xpPoOf.rst
new file mode 100644
index 00000000000000..76cfc58121d3bd
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2024-12-05-21-35-19.gh-issue-127655.xpPoOf.rst
@@ -0,0 +1 @@
+Fixed the :class:`!asyncio.selector_events._SelectorSocketTransport` transport not pausing writes for the protocol when the buffer reaches the high water mark when using :meth:`asyncio.WriteTransport.writelines`.
diff --git a/Misc/NEWS.d/next/Tests/2024-12-04-15-03-24.gh-issue-126925.uxAMK-.rst b/Misc/NEWS.d/next/Tests/2024-12-04-15-03-24.gh-issue-126925.uxAMK-.rst
new file mode 100644
index 00000000000000..fb307c7cb9bf1d
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2024-12-04-15-03-24.gh-issue-126925.uxAMK-.rst
@@ -0,0 +1,2 @@
+iOS test results are now streamed during test execution, and the deprecated
+xcresulttool is no longer used.
diff --git a/Misc/NEWS.d/next/Tests/2024-12-09-12-35-44.gh-issue-127637.KLx-9I.rst b/Misc/NEWS.d/next/Tests/2024-12-09-12-35-44.gh-issue-127637.KLx-9I.rst
new file mode 100644
index 00000000000000..ac5d9827b07199
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2024-12-09-12-35-44.gh-issue-127637.KLx-9I.rst
@@ -0,0 +1 @@
+Add tests for the :mod:`dis` command-line interface. Patch by Bénédikt Tran.
diff --git a/Misc/NEWS.d/next/Tests/2024-12-13-13-41-34.gh-issue-127906.NuRHlB.rst b/Misc/NEWS.d/next/Tests/2024-12-13-13-41-34.gh-issue-127906.NuRHlB.rst
new file mode 100644
index 00000000000000..6f577e741dff7f
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2024-12-13-13-41-34.gh-issue-127906.NuRHlB.rst
@@ -0,0 +1 @@
+Test the limited C API in test_cppext. Patch by Victor Stinner.
diff --git a/Misc/NEWS.d/next/Tools-Demos/2025-01-03-23-51-07.gh-issue-128152.IhzElS.rst b/Misc/NEWS.d/next/Tools-Demos/2025-01-03-23-51-07.gh-issue-128152.IhzElS.rst
new file mode 100644
index 00000000000000..9657e138e9911b
--- /dev/null
+++ b/Misc/NEWS.d/next/Tools-Demos/2025-01-03-23-51-07.gh-issue-128152.IhzElS.rst
@@ -0,0 +1,2 @@
+Fix a bug where Argument Clinic's C pre-processor parser tried to parse
+pre-processor directives inside C comments. Patch by Erlend Aasland.
diff --git a/Misc/NEWS.d/next/Tools-Demos/2025-01-24-14-49-40.gh-issue-129248.JAapG2.rst b/Misc/NEWS.d/next/Tools-Demos/2025-01-24-14-49-40.gh-issue-129248.JAapG2.rst
new file mode 100644
index 00000000000000..e3c781cf10cf50
--- /dev/null
+++ b/Misc/NEWS.d/next/Tools-Demos/2025-01-24-14-49-40.gh-issue-129248.JAapG2.rst
@@ -0,0 +1,2 @@
+The iOS test runner now strips the log prefix from each line output by the
+test suite.
diff --git a/Misc/NEWS.d/next/Windows/2024-11-28-15-55-48.gh-issue-127353.i-XOXg.rst b/Misc/NEWS.d/next/Windows/2024-11-28-15-55-48.gh-issue-127353.i-XOXg.rst
new file mode 100644
index 00000000000000..88661b9a611071
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2024-11-28-15-55-48.gh-issue-127353.i-XOXg.rst
@@ -0,0 +1,2 @@
+Allow to force color output on Windows using environment variables. Patch by
+Andrey Efremov.
diff --git a/Misc/NEWS.d/next/macOS/2024-12-22-08-54-30.gh-issue-127592.iyuFCC.rst b/Misc/NEWS.d/next/macOS/2024-12-22-08-54-30.gh-issue-127592.iyuFCC.rst
new file mode 100644
index 00000000000000..dfe659294c712e
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2024-12-22-08-54-30.gh-issue-127592.iyuFCC.rst
@@ -0,0 +1,2 @@
+Usage of the unified Apple System Log APIs was disabled when the minimum
+macOS version is earlier than 10.12.
diff --git a/Misc/coverity_model.c b/Misc/coverity_model.c
index 8960362a6d74a0..90c72c7baa3f9e 100644
--- a/Misc/coverity_model.c
+++ b/Misc/coverity_model.c
@@ -74,7 +74,7 @@ PyObject *PyLong_FromSsize_t(Py_ssize_t ival)
 
 /* tainted sinks
  *
- * Coverity considers argv, environ, read() data etc as tained.
+ * Coverity considers argv, environ, read() data etc as tainted.
  */
 
 PyObject *PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
diff --git a/Misc/externals.spdx.json b/Misc/externals.spdx.json
index 58f8e0afd71f1b..d54b1fbe251378 100644
--- a/Misc/externals.spdx.json
+++ b/Misc/externals.spdx.json
@@ -70,21 +70,21 @@
       "checksums": [
         {
           "algorithm": "SHA256",
-          "checksumValue": "e6a77c273ebb284fedd8ea19b081fce74a9455936ffd47215f7c24713e2614b2"
+          "checksumValue": "1550c87996a0858474a9dd179deab2c55eb73726b9a140b32865b02fd3d8a86b"
         }
       ],
-      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/openssl-3.0.13.tar.gz",
+      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/openssl-3.0.15.tar.gz",
       "externalRefs": [
         {
           "referenceCategory": "SECURITY",
-          "referenceLocator": "cpe:2.3:a:openssl:openssl:3.0.13:*:*:*:*:*:*:*",
+          "referenceLocator": "cpe:2.3:a:openssl:openssl:3.0.15:*:*:*:*:*:*:*",
           "referenceType": "cpe23Type"
         }
       ],
       "licenseConcluded": "NOASSERTION",
       "name": "openssl",
       "primaryPackagePurpose": "SOURCE",
-      "versionInfo": "3.0.13"
+      "versionInfo": "3.0.15"
     },
     {
       "SPDXID": "SPDXRef-PACKAGE-sqlite",
@@ -112,42 +112,42 @@
       "checksums": [
         {
           "algorithm": "SHA256",
-          "checksumValue": "1d3f2015e49e269cf681373d433cd54d88d5ef7443fe87f5f50f5fcfe9003e73"
+          "checksumValue": "4c23f0dd3efcbe6f3a22c503a68d147617bb30c4f5290f1eb3eaacf0b460440b"
         }
       ],
-      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/tcl-core-8.6.13.1.tar.gz",
+      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/tcl-core-8.6.15.0.tar.gz",
       "externalRefs": [
         {
           "referenceCategory": "SECURITY",
-          "referenceLocator": "cpe:2.3:a:tcl_tk:tcl_tk:8.6.13.1:*:*:*:*:*:*:*",
+          "referenceLocator": "cpe:2.3:a:tcl_tk:tcl_tk:8.6.15.0:*:*:*:*:*:*:*",
           "referenceType": "cpe23Type"
         }
       ],
       "licenseConcluded": "NOASSERTION",
       "name": "tcl-core",
       "primaryPackagePurpose": "SOURCE",
-      "versionInfo": "8.6.13.1"
+      "versionInfo": "8.6.15.0"
     },
     {
       "SPDXID": "SPDXRef-PACKAGE-tk",
       "checksums": [
         {
           "algorithm": "SHA256",
-          "checksumValue": "6056203b8a6aaf6ea89d90a7b55dc7f407e55c093f731a98fd830a712a3c81d3"
+          "checksumValue": "0ae56d39bca92865f338529557a1e56d110594184b6dc5a91339c5675751e264"
         }
       ],
-      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/tk-8.6.13.1.tar.gz",
+      "downloadLocation": "https://github.com/python/cpython-source-deps/archive/refs/tags/tk-8.6.15.0.tar.gz",
       "externalRefs": [
         {
           "referenceCategory": "SECURITY",
-          "referenceLocator": "cpe:2.3:a:tcl_tk:tcl_tk:8.6.13.1:*:*:*:*:*:*:*",
+          "referenceLocator": "cpe:2.3:a:tcl_tk:tcl_tk:8.6.15.0:*:*:*:*:*:*:*",
           "referenceType": "cpe23Type"
         }
       ],
       "licenseConcluded": "NOASSERTION",
       "name": "tk",
       "primaryPackagePurpose": "SOURCE",
-      "versionInfo": "8.6.13.1"
+      "versionInfo": "8.6.15.0"
     },
     {
       "SPDXID": "SPDXRef-PACKAGE-xz",
diff --git a/Misc/python-config.sh.in b/Misc/python-config.sh.in
index c3c0b34fc1451d..555b0cb6ba2a48 100644
--- a/Misc/python-config.sh.in
+++ b/Misc/python-config.sh.in
@@ -4,11 +4,12 @@
 
 exit_with_usage ()
 {
-    local USAGE="Usage: $0 --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--abiflags|--configdir|--embed"
-    if [[ "$1" -eq 0 ]]; then
-        echo "$USAGE"
+    local usage
+    usage="Usage: $0 --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--abiflags|--configdir|--embed"
+    if [ "$1" -eq 0 ]; then
+        echo "$usage"
     else
-        echo "$USAGE" >&2
+        echo "$usage" >&2
     fi
     exit $1
 }
@@ -46,7 +47,7 @@ LIBM="@LIBM@"
 LIBC="@LIBC@"
 SYSLIBS="$LIBM $LIBC"
 ABIFLAGS="@ABIFLAGS@"
-LIBS="@MODULE_LDFLAGS@ @LIBS@ $SYSLIBS"
+LIBS="@LIBPYTHON@ @LIBS@ $SYSLIBS"
 LIBS_EMBED="-lpython${VERSION}${ABIFLAGS} @LIBS@ $SYSLIBS"
 BASECFLAGS="@BASECFLAGS@"
 LDLIBRARY="@LDLIBRARY@"
diff --git a/Misc/python.man b/Misc/python.man
index 4c90c0e2a998ba..4076b8d3d1ba30 100644
--- a/Misc/python.man
+++ b/Misc/python.man
@@ -251,6 +251,7 @@ emitted by a process (even those that are otherwise ignored by default):
   -Wdefault  # Warn once per call location
   -Werror    # Convert to exceptions
   -Walways   # Warn every time
+  -Wall      # Same as -Walways
   -Wmodule   # Warn once per calling module
   -Wonce     # Warn once per Python process
   -Wignore   # Never warn
diff --git a/Misc/python.pc.in b/Misc/python.pc.in
index c2c740e82b1fde..027dba38585a89 100644
--- a/Misc/python.pc.in
+++ b/Misc/python.pc.in
@@ -9,5 +9,5 @@ Description: Build a C extension for Python
 Requires:
 Version: @VERSION@
 Libs.private: @LIBS@
-Libs: -L${libdir} @MODULE_LDFLAGS@
+Libs: -L${libdir} @LIBPYTHON@
 Cflags: -I${includedir}/python@VERSION@@ABIFLAGS@
diff --git a/Misc/sbom.spdx.json b/Misc/sbom.spdx.json
index b60adcfd362f68..bab4e3c74499ac 100644
--- a/Misc/sbom.spdx.json
+++ b/Misc/sbom.spdx.json
@@ -48,11 +48,11 @@
       "checksums": [
         {
           "algorithm": "SHA1",
-          "checksumValue": "4076a884f0ca96873589b5c8159e2e5bfb8b829a"
+          "checksumValue": "373cc00d87782a736970644d863ff2ebbd0e4886"
         },
         {
           "algorithm": "SHA256",
-          "checksumValue": "1a434bf3d2f9fb8a0b5adb79201a942788d11824c3e5b46a0b9962c0c482016c"
+          "checksumValue": "0f750bc336e510d14ac9a3e63fc2399f60f3f04f0061c426e86751ed5fba90e4"
         }
       ],
       "fileName": "Modules/expat/expat.h"
@@ -62,11 +62,11 @@
       "checksums": [
         {
           "algorithm": "SHA1",
-          "checksumValue": "b70ce53fdc25ae482681ae2f6623c3c8edc9c1b7"
+          "checksumValue": "9e615c6e5c3ba00670f674a6b071bb855b0b563d"
         },
         {
           "algorithm": "SHA256",
-          "checksumValue": "86afb425ec9999eb4f1ec9ab2fb41c58c4aa5cb9bf934b8c94264670fc5a961d"
+          "checksumValue": "3d90a4b65c40a3f848c36100f4d73b933a015c7b7cd85c28e4331a6b845c1ad0"
         }
       ],
       "fileName": "Modules/expat/expat_external.h"
@@ -128,29 +128,29 @@
       "fileName": "Modules/expat/nametab.h"
     },
     {
-      "SPDXID": "SPDXRef-FILE-Modules-expat-pyexpatns.h",
+      "SPDXID": "SPDXRef-FILE-Modules-expat-refresh.sh",
       "checksums": [
         {
           "algorithm": "SHA1",
-          "checksumValue": "f50c899172acd93fc539007bfb43315b83d407e4"
+          "checksumValue": "a9b0a33b8359cfe94b23972a1605daf8dcc605d9"
         },
         {
           "algorithm": "SHA256",
-          "checksumValue": "d571b8258cfaa067a20adef553e5fcedd6671ca4a8841483496de031bd904567"
+          "checksumValue": "19eb541460bc2ca8b87118acd3c048f6af77affbf8719ac29aa7b6c8d70f83fd"
         }
       ],
-      "fileName": "Modules/expat/pyexpatns.h"
+      "fileName": "Modules/expat/refresh.sh"
     },
     {
       "SPDXID": "SPDXRef-FILE-Modules-expat-siphash.h",
       "checksums": [
         {
           "algorithm": "SHA1",
-          "checksumValue": "4c49b5df2bc702f663ba3b5a52d1940ec363226b"
+          "checksumValue": "aca27f46d9fd387b63ce7ff2e4f172cad130b39b"
         },
         {
           "algorithm": "SHA256",
-          "checksumValue": "b5ec29f6560acc183f1ee8ab92bb3aea17b87b4c2120cd2e3f78deba7a12491e"
+          "checksumValue": "f537add526ecda8389503b7ef45fb52b6217e4dc171dcc3a8dc6903ff6134726"
         }
       ],
       "fileName": "Modules/expat/siphash.h"
@@ -188,11 +188,11 @@
       "checksums": [
         {
           "algorithm": "SHA1",
-          "checksumValue": "fed1311be8577491b7f63085a27014eabf2caec8"
+          "checksumValue": "3199fbd38b6fb158f73d5c8de6b6e6e3812ef803"
         },
         {
           "algorithm": "SHA256",
-          "checksumValue": "3dc233eca5fa1bb7387c503f8a12d840707e4374b229e05d5657db9645725040"
+          "checksumValue": "c1518244dd5ea397e345d00e12cc45d42f43453ed208218559c981c97a0583e2"
         }
       ],
       "fileName": "Modules/expat/xmlparse.c"
@@ -1562,14 +1562,14 @@
       "checksums": [
         {
           "algorithm": "SHA256",
-          "checksumValue": "d4cf38d26e21a56654ffe4acd9cd5481164619626802328506a2869afab29ab3"
+          "checksumValue": "17aa6cfc5c4c219c09287abfc10bc13f0c06f30bb654b28bfe6f567ca646eb79"
         }
       ],
-      "downloadLocation": "https://github.com/libexpat/libexpat/releases/download/R_2_6_2/expat-2.6.2.tar.gz",
+      "downloadLocation": "https://github.com/libexpat/libexpat/releases/download/R_2_6_3/expat-2.6.3.tar.gz",
       "externalRefs": [
         {
           "referenceCategory": "SECURITY",
-          "referenceLocator": "cpe:2.3:a:libexpat_project:libexpat:2.6.2:*:*:*:*:*:*:*",
+          "referenceLocator": "cpe:2.3:a:libexpat_project:libexpat:2.6.3:*:*:*:*:*:*:*",
           "referenceType": "cpe23Type"
         }
       ],
@@ -1577,7 +1577,7 @@
       "name": "expat",
       "originator": "Organization: Expat development team",
       "primaryPackagePurpose": "SOURCE",
-      "versionInfo": "2.6.2"
+      "versionInfo": "2.6.3"
     },
     {
       "SPDXID": "SPDXRef-PACKAGE-hacl-star",
@@ -1715,7 +1715,7 @@
       "spdxElementId": "SPDXRef-PACKAGE-expat"
     },
     {
-      "relatedSpdxElement": "SPDXRef-FILE-Modules-expat-pyexpatns.h",
+      "relatedSpdxElement": "SPDXRef-FILE-Modules-expat-refresh.sh",
       "relationshipType": "CONTAINS",
       "spdxElementId": "SPDXRef-PACKAGE-expat"
     },
diff --git a/Misc/stable_abi.toml b/Misc/stable_abi.toml
index 77473662aaa76c..34c3a539eb9b3e 100644
--- a/Misc/stable_abi.toml
+++ b/Misc/stable_abi.toml
@@ -2480,8 +2480,6 @@
 [function._Py_SetRefcnt]
     added = '3.13'
     abi_only = true
-[data.PyExc_IncompleteInputError]
-    added = '3.13'
 [function.PyList_GetItemRef]
     added = '3.13'
 [typedef.PyCFunctionFast]
diff --git a/Misc/valgrind-python.supp b/Misc/valgrind-python.supp
index 29954c1bbad350..8b2027cd452767 100644
--- a/Misc/valgrind-python.supp
+++ b/Misc/valgrind-python.supp
@@ -95,6 +95,49 @@
    fun:COMMENT_THIS_LINE_TO_DISABLE_LEAK_WARNING
 }
 
+#
+# Leaks: dlopen() called without dlclose()
+#
+
+{
+   dlopen() called without dlclose()
+   Memcheck:Leak
+   fun:malloc
+   fun:malloc
+   fun:strdup
+   fun:_dl_load_cache_lookup
+}
+{
+   dlopen() called without dlclose()
+   Memcheck:Leak
+   fun:malloc
+   fun:malloc
+   fun:strdup
+   fun:_dl_map_object
+}
+{
+   dlopen() called without dlclose()
+   Memcheck:Leak
+   fun:malloc
+   fun:*
+   fun:_dl_new_object
+}
+{
+   dlopen() called without dlclose()
+   Memcheck:Leak
+   fun:calloc
+   fun:*
+   fun:_dl_new_object
+}
+{
+   dlopen() called without dlclose()
+   Memcheck:Leak
+   fun:calloc
+   fun:*
+   fun:_dl_check_map_versions
+}
+
+
 #
 # Non-python specific leaks
 #
diff --git a/Modules/Setup.stdlib.in b/Modules/Setup.stdlib.in
index 78b979698fcd75..57b90101bbe4a6 100644
--- a/Modules/Setup.stdlib.in
+++ b/Modules/Setup.stdlib.in
@@ -164,7 +164,7 @@
 @MODULE__TESTBUFFER_TRUE@_testbuffer _testbuffer.c
 @MODULE__TESTINTERNALCAPI_TRUE@_testinternalcapi _testinternalcapi.c _testinternalcapi/test_lock.c _testinternalcapi/pytime.c _testinternalcapi/set.c _testinternalcapi/test_critical_sections.c
 @MODULE__TESTCAPI_TRUE@_testcapi _testcapimodule.c _testcapi/vectorcall.c _testcapi/heaptype.c _testcapi/abstract.c _testcapi/unicode.c _testcapi/dict.c _testcapi/set.c _testcapi/list.c _testcapi/tuple.c _testcapi/getargs.c _testcapi/datetime.c _testcapi/docstring.c _testcapi/mem.c _testcapi/watchers.c _testcapi/long.c _testcapi/float.c _testcapi/complex.c _testcapi/numbers.c _testcapi/structmember.c _testcapi/exceptions.c _testcapi/code.c _testcapi/buffer.c _testcapi/pyatomic.c _testcapi/run.c _testcapi/file.c _testcapi/codec.c _testcapi/immortal.c _testcapi/gc.c _testcapi/hash.c _testcapi/time.c _testcapi/bytes.c _testcapi/object.c _testcapi/monitoring.c
-@MODULE__TESTLIMITEDCAPI_TRUE@_testlimitedcapi _testlimitedcapi.c _testlimitedcapi/abstract.c _testlimitedcapi/bytearray.c _testlimitedcapi/bytes.c _testlimitedcapi/complex.c _testlimitedcapi/dict.c _testlimitedcapi/float.c _testlimitedcapi/heaptype_relative.c _testlimitedcapi/list.c _testlimitedcapi/long.c _testlimitedcapi/object.c _testlimitedcapi/pyos.c _testlimitedcapi/set.c _testlimitedcapi/sys.c _testlimitedcapi/unicode.c _testlimitedcapi/vectorcall_limited.c
+@MODULE__TESTLIMITEDCAPI_TRUE@_testlimitedcapi _testlimitedcapi.c _testlimitedcapi/abstract.c _testlimitedcapi/bytearray.c _testlimitedcapi/bytes.c _testlimitedcapi/complex.c _testlimitedcapi/dict.c _testlimitedcapi/eval.c _testlimitedcapi/float.c _testlimitedcapi/heaptype_relative.c _testlimitedcapi/import.c _testlimitedcapi/list.c _testlimitedcapi/long.c _testlimitedcapi/object.c _testlimitedcapi/pyos.c _testlimitedcapi/set.c _testlimitedcapi/sys.c _testlimitedcapi/tuple.c _testlimitedcapi/unicode.c _testlimitedcapi/vectorcall_limited.c _testlimitedcapi/file.c
 @MODULE__TESTCLINIC_TRUE@_testclinic _testclinic.c
 @MODULE__TESTCLINIC_LIMITED_TRUE@_testclinic_limited _testclinic_limited.c
 
diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index a26714f9755df5..7e2fe28423399f 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -68,14 +68,13 @@ typedef struct {
     /* Imports from traceback. */
     PyObject *traceback_extract_stack;
 
-    PyObject *cached_running_loop; // Borrowed reference
-    volatile uint64_t cached_running_loop_tsid;
-
     /* Counter for autogenerated Task names */
     uint64_t task_name_counter;
 
+#ifndef Py_GIL_DISABLED
     futureiterobject *fi_freelist;
     Py_ssize_t fi_freelist_len;
+#endif
 } asyncio_state;
 
 static inline asyncio_state *
@@ -262,96 +261,15 @@ get_future_loop(asyncio_state *state, PyObject *fut)
     return PyObject_GetAttr(fut, &_Py_ID(_loop));
 }
 
-
-static int
-get_running_loop(asyncio_state *state, PyObject **loop)
-{
-    PyObject *rl;
-
-    PyThreadState *ts = _PyThreadState_GET();
-    uint64_t ts_id = PyThreadState_GetID(ts);
-    if (state->cached_running_loop_tsid == ts_id &&
-        state->cached_running_loop != NULL)
-    {
-        // Fast path, check the cache.
-        rl = state->cached_running_loop;
-    }
-    else {
-        PyObject *ts_dict = _PyThreadState_GetDict(ts);  // borrowed
-        if (ts_dict == NULL) {
-            goto not_found;
-        }
-
-        rl = PyDict_GetItemWithError(
-            ts_dict, &_Py_ID(__asyncio_running_event_loop__));  // borrowed
-        if (rl == NULL) {
-            if (PyErr_Occurred()) {
-                goto error;
-            }
-            else {
-                goto not_found;
-            }
-        }
-
-        state->cached_running_loop = rl;
-        state->cached_running_loop_tsid = ts_id;
-    }
-
-
-    if (rl == Py_None) {
-        goto not_found;
-    }
-
-    *loop = Py_NewRef(rl);
-    return 0;
-
-not_found:
-    *loop = NULL;
-    return 0;
-
-error:
-    *loop = NULL;
-    return -1;
-}
-
-
-static int
-set_running_loop(asyncio_state *state, PyObject *loop)
-{
-    PyObject *ts_dict = NULL;
-
-    PyThreadState *tstate = _PyThreadState_GET();
-    if (tstate != NULL) {
-        ts_dict = _PyThreadState_GetDict(tstate);  // borrowed
-    }
-
-    if (ts_dict == NULL) {
-        PyErr_SetString(
-            PyExc_RuntimeError, "thread-local storage is not available");
-        return -1;
-    }
-    if (PyDict_SetItem(
-            ts_dict, &_Py_ID(__asyncio_running_event_loop__), loop) < 0)
-    {
-        return -1;
-    }
-
-    state->cached_running_loop = loop; // borrowed, kept alive by ts_dict
-    state->cached_running_loop_tsid = PyThreadState_GetID(tstate);
-
-    return 0;
-}
-
-
 static PyObject *
 get_event_loop(asyncio_state *state)
 {
     PyObject *loop;
     PyObject *policy;
 
-    if (get_running_loop(state, &loop)) {
-        return NULL;
-    }
+    _PyThreadStateImpl *ts = (_PyThreadStateImpl *)_PyThreadState_GET();
+    loop = Py_XNewRef(ts->asyncio_running_loop);
+
     if (loop != NULL) {
         return loop;
     }
@@ -434,18 +352,22 @@ future_ensure_alive(FutureObj *fut)
 static int
 future_schedule_callbacks(asyncio_state *state, FutureObj *fut)
 {
-    Py_ssize_t len;
-    Py_ssize_t i;
-
     if (fut->fut_callback0 != NULL) {
         /* There's a 1st callback */
 
-        int ret = call_soon(state,
-            fut->fut_loop, fut->fut_callback0,
-            (PyObject *)fut, fut->fut_context0);
-
-        Py_CLEAR(fut->fut_callback0);
-        Py_CLEAR(fut->fut_context0);
+        // Beware: An evil call_soon could alter fut_callback0 or fut_context0.
+        // Since we are anyway clearing them after the call, whether call_soon
+        // succeeds or not, the idea is to transfer ownership so that external
+        // code is not able to alter them during the call.
+        PyObject *fut_callback0 = fut->fut_callback0;
+        fut->fut_callback0 = NULL;
+        PyObject *fut_context0 = fut->fut_context0;
+        fut->fut_context0 = NULL;
+
+        int ret = call_soon(state, fut->fut_loop, fut_callback0,
+                            (PyObject *)fut, fut_context0);
+        Py_CLEAR(fut_callback0);
+        Py_CLEAR(fut_context0);
         if (ret) {
             /* If an error occurs in pure-Python implementation,
                all callbacks are cleared. */
@@ -462,27 +384,25 @@ future_schedule_callbacks(asyncio_state *state, FutureObj *fut)
         return 0;
     }
 
-    len = PyList_GET_SIZE(fut->fut_callbacks);
-    if (len == 0) {
-        /* The list of callbacks was empty; clear it and return. */
-        Py_CLEAR(fut->fut_callbacks);
-        return 0;
-    }
-
-    for (i = 0; i < len; i++) {
-        PyObject *cb_tup = PyList_GET_ITEM(fut->fut_callbacks, i);
+    // Beware: An evil call_soon could change fut->fut_callbacks.
+    // The idea is to transfer the ownership of the callbacks list
+    // so that external code is not able to mutate the list during
+    // the iteration.
+    PyObject *callbacks = fut->fut_callbacks;
+    fut->fut_callbacks = NULL;
+    Py_ssize_t n = PyList_GET_SIZE(callbacks);
+    for (Py_ssize_t i = 0; i < n; i++) {
+        assert(PyList_GET_SIZE(callbacks) == n);
+        PyObject *cb_tup = PyList_GET_ITEM(callbacks, i);
         PyObject *cb = PyTuple_GET_ITEM(cb_tup, 0);
         PyObject *ctx = PyTuple_GET_ITEM(cb_tup, 1);
 
         if (call_soon(state, fut->fut_loop, cb, (PyObject *)fut, ctx)) {
-            /* If an error occurs in pure-Python implementation,
-               all callbacks are cleared. */
-            Py_CLEAR(fut->fut_callbacks);
+            Py_DECREF(callbacks);
             return -1;
         }
     }
-
-    Py_CLEAR(fut->fut_callbacks);
+    Py_DECREF(callbacks);
     return 0;
 }
 
@@ -1045,7 +965,12 @@ _asyncio_Future_remove_done_callback_impl(FutureObj *self, PyTypeObject *cls,
     ENSURE_FUTURE_ALIVE(state, self)
 
     if (self->fut_callback0 != NULL) {
-        int cmp = PyObject_RichCompareBool(self->fut_callback0, fn, Py_EQ);
+        // Beware: An evil PyObject_RichCompareBool could free fut_callback0
+        // before a recursive call is made with that same arg. For details, see
+        // https://github.com/python/cpython/pull/125967#discussion_r1816593340.
+        PyObject *fut_callback0 = Py_NewRef(self->fut_callback0);
+        int cmp = PyObject_RichCompareBool(fut_callback0, fn, Py_EQ);
+        Py_DECREF(fut_callback0);
         if (cmp == -1) {
             return NULL;
         }
@@ -1069,8 +994,10 @@ _asyncio_Future_remove_done_callback_impl(FutureObj *self, PyTypeObject *cls,
 
     if (len == 1) {
         PyObject *cb_tup = PyList_GET_ITEM(self->fut_callbacks, 0);
+        Py_INCREF(cb_tup);
         int cmp = PyObject_RichCompareBool(
             PyTuple_GET_ITEM(cb_tup, 0), fn, Py_EQ);
+        Py_DECREF(cb_tup);
         if (cmp == -1) {
             return NULL;
         }
@@ -1293,52 +1220,49 @@ static PyObject *
 FutureObj_get_callbacks(FutureObj *fut, void *Py_UNUSED(ignored))
 {
     asyncio_state *state = get_asyncio_state_by_def((PyObject *)fut);
-    Py_ssize_t i;
-
     ENSURE_FUTURE_ALIVE(state, fut)
 
-    if (fut->fut_callback0 == NULL) {
-        if (fut->fut_callbacks == NULL) {
-            Py_RETURN_NONE;
-        }
-
-        return Py_NewRef(fut->fut_callbacks);
+    Py_ssize_t len = 0;
+    if (fut->fut_callback0 != NULL) {
+        len++;
     }
-
-    Py_ssize_t len = 1;
     if (fut->fut_callbacks != NULL) {
         len += PyList_GET_SIZE(fut->fut_callbacks);
     }
 
-
-    PyObject *new_list = PyList_New(len);
-    if (new_list == NULL) {
-        return NULL;
+    if (len == 0) {
+        Py_RETURN_NONE;
     }
 
-    PyObject *tup0 = PyTuple_New(2);
-    if (tup0 == NULL) {
-        Py_DECREF(new_list);
+    PyObject *callbacks = PyList_New(len);
+    if (callbacks == NULL) {
         return NULL;
     }
 
-    Py_INCREF(fut->fut_callback0);
-    PyTuple_SET_ITEM(tup0, 0, fut->fut_callback0);
-    assert(fut->fut_context0 != NULL);
-    Py_INCREF(fut->fut_context0);
-    PyTuple_SET_ITEM(tup0, 1, (PyObject *)fut->fut_context0);
-
-    PyList_SET_ITEM(new_list, 0, tup0);
+    Py_ssize_t i = 0;
+    if (fut->fut_callback0 != NULL) {
+        PyObject *tup0 = PyTuple_New(2);
+        if (tup0 == NULL) {
+            Py_DECREF(callbacks);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(tup0, 0, Py_NewRef(fut->fut_callback0));
+        assert(fut->fut_context0 != NULL);
+        PyTuple_SET_ITEM(tup0, 1, Py_NewRef(fut->fut_context0));
+        PyList_SET_ITEM(callbacks, i, tup0);
+        i++;
+    }
 
     if (fut->fut_callbacks != NULL) {
-        for (i = 0; i < PyList_GET_SIZE(fut->fut_callbacks); i++) {
-            PyObject *cb = PyList_GET_ITEM(fut->fut_callbacks, i);
+        for (Py_ssize_t j = 0; j < PyList_GET_SIZE(fut->fut_callbacks); j++) {
+            PyObject *cb = PyList_GET_ITEM(fut->fut_callbacks, j);
             Py_INCREF(cb);
-            PyList_SET_ITEM(new_list, i + 1, cb);
+            PyList_SET_ITEM(callbacks, i, cb);
+            i++;
         }
     }
 
-    return new_list;
+    return callbacks;
 }
 
 static PyObject *
@@ -1415,7 +1339,7 @@ FutureObj_get_state(FutureObj *fut, void *Py_UNUSED(ignored))
     default:
         assert (0);
     }
-    assert(_Py_IsImmortal(ret));
+    assert(_Py_IsImmortalLoose(ret));
     return ret;
 }
 
@@ -1602,29 +1526,29 @@ FutureIter_dealloc(futureiterobject *it)
 {
     PyTypeObject *tp = Py_TYPE(it);
 
-    // FutureIter is a heap type so any subclass must also be a heap type.
     assert(_PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE));
 
-    PyObject *module = ((PyHeapTypeObject*)tp)->ht_module;
-    asyncio_state *state = NULL;
-
     PyObject_GC_UnTrack(it);
     tp->tp_clear((PyObject *)it);
 
+#ifndef Py_GIL_DISABLED
     // GH-115874: We can't use PyType_GetModuleByDef here as the type might have
     // already been cleared, which is also why we must check if ht_module != NULL.
-    // Due to this restriction, subclasses that belong to a different module
-    // will not be able to use the free list.
+    PyObject *module = ((PyHeapTypeObject*)tp)->ht_module;
+    asyncio_state *state = NULL;
     if (module && _PyModule_GetDef(module) == &_asynciomodule) {
         state = get_asyncio_state(module);
     }
 
+    // TODO GH-121621: This should be moved to thread state as well.
     if (state && state->fi_freelist_len < FI_FREELIST_MAXLEN) {
         state->fi_freelist_len++;
         it->future = (FutureObj*) state->fi_freelist;
         state->fi_freelist = it;
     }
-    else {
+    else
+#endif
+    {
         PyObject_GC_Del(it);
         Py_DECREF(tp);
     }
@@ -1828,6 +1752,7 @@ future_new_iter(PyObject *fut)
     asyncio_state *state = get_asyncio_state_by_def((PyObject *)fut);
     ENSURE_FUTURE_ALIVE(state, fut)
 
+#ifndef Py_GIL_DISABLED
     if (state->fi_freelist_len) {
         state->fi_freelist_len--;
         it = state->fi_freelist;
@@ -1835,7 +1760,9 @@ future_new_iter(PyObject *fut)
         it->future = NULL;
         _Py_NewReference((PyObject*) it);
     }
-    else {
+    else
+#endif
+    {
         it = PyObject_GC_New(futureiterobject, state->FutureIterType);
         if (it == NULL) {
             return NULL;
@@ -2007,14 +1934,11 @@ static int
 enter_task(asyncio_state *state, PyObject *loop, PyObject *task)
 {
     PyObject *item;
-    Py_hash_t hash;
-    hash = PyObject_Hash(loop);
-    if (hash == -1) {
+    int res = PyDict_SetDefaultRef(state->current_tasks, loop, task, &item);
+    if (res < 0) {
         return -1;
     }
-    item = _PyDict_GetItem_KnownHash(state->current_tasks, loop, hash);
-    if (item != NULL) {
-        Py_INCREF(item);
+    else if (res == 1) {
         PyErr_Format(
             PyExc_RuntimeError,
             "Cannot enter into task %R while another " \
@@ -2023,36 +1947,58 @@ enter_task(asyncio_state *state, PyObject *loop, PyObject *task)
         Py_DECREF(item);
         return -1;
     }
-    if (PyErr_Occurred()) {
-        return -1;
-    }
-    return _PyDict_SetItem_KnownHash(state->current_tasks, loop, task, hash);
+    Py_DECREF(item);
+    return 0;
 }
 
+static int
+err_leave_task(PyObject *item, PyObject *task)
+{
+    PyErr_Format(
+        PyExc_RuntimeError,
+        "Leaving task %R does not match the current task %R.",
+        task, item);
+    return -1;
+}
+
+static int
+leave_task_predicate(PyObject *item, void *task)
+{
+    if (item != task) {
+        return err_leave_task(item, (PyObject *)task);
+    }
+    return 1;
+}
 
 static int
 leave_task(asyncio_state *state, PyObject *loop, PyObject *task)
 /*[clinic end generated code: output=0ebf6db4b858fb41 input=51296a46313d1ad8]*/
 {
-    PyObject *item;
-    Py_hash_t hash;
-    hash = PyObject_Hash(loop);
-    if (hash == -1) {
-        return -1;
+    int res = _PyDict_DelItemIf(state->current_tasks, loop,
+                                leave_task_predicate, task);
+    if (res == 0) {
+        // task was not found
+        return err_leave_task(Py_None, task);
     }
-    item = _PyDict_GetItem_KnownHash(state->current_tasks, loop, hash);
-    if (item != task) {
-        if (item == NULL) {
-            /* Not entered, replace with None */
-            item = Py_None;
-        }
-        PyErr_Format(
-            PyExc_RuntimeError,
-            "Leaving task %R does not match the current task %R.",
-            task, item, NULL);
-        return -1;
+    return res;
+}
+
+static PyObject *
+swap_current_task_lock_held(PyDictObject *current_tasks, PyObject *loop,
+                            Py_hash_t hash, PyObject *task)
+{
+    PyObject *prev_task;
+    if (_PyDict_GetItemRef_KnownHash_LockHeld(current_tasks, loop, hash, &prev_task) < 0) {
+        return NULL;
+    }
+    if (_PyDict_SetItem_KnownHash_LockHeld(current_tasks, loop, task, hash) < 0) {
+        Py_XDECREF(prev_task);
+        return NULL;
+    }
+    if (prev_task == NULL) {
+        Py_RETURN_NONE;
     }
-    return _PyDict_DelItem_KnownHash(state->current_tasks, loop, hash);
+    return prev_task;
 }
 
 static PyObject *
@@ -2070,24 +2016,15 @@ swap_current_task(asyncio_state *state, PyObject *loop, PyObject *task)
         return prev_task;
     }
 
-    Py_hash_t hash;
-    hash = PyObject_Hash(loop);
+    Py_hash_t hash = PyObject_Hash(loop);
     if (hash == -1) {
         return NULL;
     }
-    prev_task = _PyDict_GetItem_KnownHash(state->current_tasks, loop, hash);
-    if (prev_task == NULL) {
-        if (PyErr_Occurred()) {
-            return NULL;
-        }
-        prev_task = Py_None;
-    }
-    Py_INCREF(prev_task);
-    if (_PyDict_SetItem_KnownHash(state->current_tasks, loop, task, hash) == -1) {
-        Py_DECREF(prev_task);
-        return NULL;
-    }
 
+    PyDictObject *current_tasks = (PyDictObject *)state->current_tasks;
+    Py_BEGIN_CRITICAL_SECTION(current_tasks);
+    prev_task = swap_current_task_lock_held(current_tasks, loop, hash, task);
+    Py_END_CRITICAL_SECTION();
     return prev_task;
 }
 
@@ -2135,7 +2072,7 @@ _asyncio_Task___init___impl(TaskObj *self, PyObject *coro, PyObject *loop,
             return -1;
         }
     } else {
-        self->task_context = Py_NewRef(context);
+        Py_XSETREF(self->task_context, Py_NewRef(context));
     }
 
     Py_CLEAR(self->task_fut_waiter);
@@ -2149,7 +2086,12 @@ _asyncio_Task___init___impl(TaskObj *self, PyObject *coro, PyObject *loop,
         // optimization: defer task name formatting
         // store the task counter as PyLong in the name
         // for deferred formatting in get_name
-        name = PyLong_FromUnsignedLongLong(++state->task_name_counter);
+#ifdef Py_GIL_DISABLED
+        unsigned long long counter = _Py_atomic_add_uint64(&state->task_name_counter, 1) + 1;
+#else
+        unsigned long long counter = ++state->task_name_counter;
+#endif
+        name = PyLong_FromUnsignedLongLong(counter);
     } else if (!PyUnicode_CheckExact(name)) {
         name = PyObject_Str(name);
     } else {
@@ -2523,7 +2465,11 @@ static PyObject *
 _asyncio_Task_get_coro_impl(TaskObj *self)
 /*[clinic end generated code: output=bcac27c8cc6c8073 input=d2e8606c42a7b403]*/
 {
-    return Py_NewRef(self->task_coro);
+    if (self->task_coro) {
+        return Py_NewRef(self->task_coro);
+    }
+
+    Py_RETURN_NONE;
 }
 
 /*[clinic input]
@@ -2734,7 +2680,11 @@ task_call_step_soon(asyncio_state *state, TaskObj *task, PyObject *arg)
         return -1;
     }
 
-    int ret = call_soon(state, task->task_loop, cb, NULL, task->task_context);
+    // Beware: An evil call_soon could alter task_context.
+    // See: https://github.com/python/cpython/issues/126080.
+    PyObject *task_context = Py_NewRef(task->task_context);
+    int ret = call_soon(state, task->task_loop, cb, NULL, task_context);
+    Py_DECREF(task_context);
     Py_DECREF(cb);
     return ret;
 }
@@ -2959,8 +2909,17 @@ task_step_handle_result_impl(asyncio_state *state, TaskObj *task, PyObject *resu
         if (task->task_must_cancel) {
             PyObject *r;
             int is_true;
+
+            // Beware: An evil `__getattribute__` could
+            // prematurely delete task->task_cancel_msg before the
+            // task is cancelled, thereby causing a UAF crash.
+            //
+            // See https://github.com/python/cpython/issues/126138
+            PyObject *task_cancel_msg = Py_NewRef(task->task_cancel_msg);
             r = PyObject_CallMethodOneArg(result, &_Py_ID(cancel),
-                                             task->task_cancel_msg);
+                                          task_cancel_msg);
+            Py_DECREF(task_cancel_msg);
+
             if (r == NULL) {
                 return NULL;
             }
@@ -3052,8 +3011,17 @@ task_step_handle_result_impl(asyncio_state *state, TaskObj *task, PyObject *resu
         if (task->task_must_cancel) {
             PyObject *r;
             int is_true;
+
+            // Beware: An evil `__getattribute__` could
+            // prematurely delete task->task_cancel_msg before the
+            // task is cancelled, thereby causing a UAF crash.
+            //
+            // See https://github.com/python/cpython/issues/126138
+            PyObject *task_cancel_msg = Py_NewRef(task->task_cancel_msg);
             r = PyObject_CallMethodOneArg(result, &_Py_ID(cancel),
-                                             task->task_cancel_msg);
+                                          task_cancel_msg);
+            Py_DECREF(task_cancel_msg);
+
             if (r == NULL) {
                 return NULL;
             }
@@ -3270,11 +3238,8 @@ static PyObject *
 _asyncio__get_running_loop_impl(PyObject *module)
 /*[clinic end generated code: output=b4390af721411a0a input=0a21627e25a4bd43]*/
 {
-    PyObject *loop;
-    asyncio_state *state = get_asyncio_state(module);
-    if (get_running_loop(state, &loop)) {
-        return NULL;
-    }
+    _PyThreadStateImpl *ts = (_PyThreadStateImpl *)_PyThreadState_GET();
+    PyObject *loop = Py_XNewRef(ts->asyncio_running_loop);
     if (loop == NULL) {
         /* There's no currently running event loop */
         Py_RETURN_NONE;
@@ -3297,10 +3262,11 @@ static PyObject *
 _asyncio__set_running_loop(PyObject *module, PyObject *loop)
 /*[clinic end generated code: output=ae56bf7a28ca189a input=4c9720233d606604]*/
 {
-    asyncio_state *state = get_asyncio_state(module);
-    if (set_running_loop(state, loop)) {
-        return NULL;
+    _PyThreadStateImpl *ts = (_PyThreadStateImpl *)_PyThreadState_GET();
+    if (loop == Py_None) {
+        loop = NULL;
     }
+    Py_XSETREF(ts->asyncio_running_loop, Py_XNewRef(loop));
     Py_RETURN_NONE;
 }
 
@@ -3338,14 +3304,13 @@ _asyncio_get_running_loop_impl(PyObject *module)
 /*[clinic end generated code: output=c247b5f9e529530e input=2a3bf02ba39f173d]*/
 {
     PyObject *loop;
-    asyncio_state *state = get_asyncio_state(module);
-    if (get_running_loop(state, &loop)) {
-        return NULL;
-    }
+    _PyThreadStateImpl *ts = (_PyThreadStateImpl *)_PyThreadState_GET();
+    loop = Py_XNewRef(ts->asyncio_running_loop);
     if (loop == NULL) {
         /* There's no currently running event loop */
         PyErr_SetString(
             PyExc_RuntimeError, "no running event loop");
+        return NULL;
     }
     return loop;
 }
@@ -3547,6 +3512,7 @@ _asyncio_current_task_impl(PyObject *module, PyObject *loop)
 static void
 module_free_freelists(asyncio_state *state)
 {
+#ifndef Py_GIL_DISABLED
     PyObject *next;
     PyObject *current;
 
@@ -3561,6 +3527,7 @@ module_free_freelists(asyncio_state *state)
     }
     assert(state->fi_freelist_len == 0);
     state->fi_freelist = NULL;
+#endif
 }
 
 static int
@@ -3590,14 +3557,6 @@ module_traverse(PyObject *mod, visitproc visit, void *arg)
     Py_VISIT(state->iscoroutine_typecache);
 
     Py_VISIT(state->context_kwname);
-
-    // Visit freelist.
-    PyObject *next = (PyObject*) state->fi_freelist;
-    while (next != NULL) {
-        PyObject *current = next;
-        Py_VISIT(current);
-        next = (PyObject*) ((futureiterobject*) current)->future;
-    }
     return 0;
 }
 
diff --git a/Modules/_bisectmodule.c b/Modules/_bisectmodule.c
index 56322c48b7cd35..9b146265445d9a 100644
--- a/Modules/_bisectmodule.c
+++ b/Modules/_bisectmodule.c
@@ -70,7 +70,7 @@ internal_bisect_right(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t
     if (sq_item == NULL) {
         return -1;
     }
-    if (Py_EnterRecursiveCall("in _bisect.bisect_right")) {
+    if (Py_EnterRecursiveCall(" in _bisect.bisect_right")) {
         return -1;
     }
     PyTypeObject *tp = Py_TYPE(item);
@@ -254,7 +254,7 @@ internal_bisect_left(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t h
     if (sq_item == NULL) {
         return -1;
     }
-    if (Py_EnterRecursiveCall("in _bisect.bisect_left")) {
+    if (Py_EnterRecursiveCall(" in _bisect.bisect_left")) {
         return -1;
     }
     PyTypeObject *tp = Py_TYPE(item);
diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index 644a90a8c71099..c821f18b1708e1 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -2537,12 +2537,9 @@ _collections__count_elements_impl(PyObject *module, PyObject *mapping,
             if (key == NULL)
                 break;
 
-            if (!PyUnicode_CheckExact(key) ||
-                (hash = _PyASCIIObject_CAST(key)->hash) == -1)
-            {
-                hash = PyObject_Hash(key);
-                if (hash == -1)
-                    goto done;
+            hash = _PyObject_HashFast(key);
+            if (hash == -1) {
+                goto done;
             }
 
             oldval = _PyDict_GetItem_KnownHash(mapping, key, hash);
diff --git a/Modules/_csv.c b/Modules/_csv.c
index 9d6b66d4938687..f9387abe0e663a 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -14,6 +14,7 @@ module instead.
 #endif
 
 #include "Python.h"
+#include "pycore_pyatomic_ft_wrappers.h"
 
 #include <stddef.h>               // offsetof()
 #include <stdbool.h>
@@ -34,7 +35,7 @@ typedef struct {
     PyTypeObject *dialect_type;
     PyTypeObject *reader_type;
     PyTypeObject *writer_type;
-    long field_limit;   /* max parsed field size */
+    Py_ssize_t field_limit;   /* max parsed field size */
     PyObject *str_write;
 } _csvstate;
 
@@ -702,10 +703,11 @@ parse_grow_buff(ReaderObj *self)
 static int
 parse_add_char(ReaderObj *self, _csvstate *module_state, Py_UCS4 c)
 {
-    if (self->field_len >= module_state->field_limit) {
+    Py_ssize_t field_limit = FT_ATOMIC_LOAD_SSIZE_RELAXED(module_state->field_limit);
+    if (self->field_len >= field_limit) {
         PyErr_Format(module_state->error_obj,
-                     "field larger than field limit (%ld)",
-                     module_state->field_limit);
+                     "field larger than field limit (%zd)",
+                     field_limit);
         return -1;
     }
     if (self->field_len == self->field_size && !parse_grow_buff(self))
@@ -749,7 +751,6 @@ parse_process_char(ReaderObj *self, _csvstate *module_state, Py_UCS4 c)
         }
         else if (c == dialect->escapechar) {
             /* possible escaped character */
-            self->unquoted_field = false;
             self->state = ESCAPED_CHAR;
         }
         else if (c == ' ' && dialect->skipinitialspace)
@@ -1115,7 +1116,7 @@ join_append_data(WriterObj *self, int field_kind, const void *field_data,
                  int copy_phase)
 {
     DialectObj *dialect = self->dialect;
-    int i;
+    Py_ssize_t i;
     Py_ssize_t rec_len;
 
 #define INCLEN \
@@ -1652,20 +1653,20 @@ _csv_field_size_limit_impl(PyObject *module, PyObject *new_limit)
 /*[clinic end generated code: output=f2799ecd908e250b input=cec70e9226406435]*/
 {
     _csvstate *module_state = get_csv_state(module);
-    long old_limit = module_state->field_limit;
+    Py_ssize_t old_limit = FT_ATOMIC_LOAD_SSIZE_RELAXED(module_state->field_limit);
     if (new_limit != NULL) {
         if (!PyLong_CheckExact(new_limit)) {
             PyErr_Format(PyExc_TypeError,
                          "limit must be an integer");
             return NULL;
         }
-        module_state->field_limit = PyLong_AsLong(new_limit);
-        if (module_state->field_limit == -1 && PyErr_Occurred()) {
-            module_state->field_limit = old_limit;
+        Py_ssize_t new_limit_value = PyLong_AsSsize_t(new_limit);
+        if (new_limit_value == -1 && PyErr_Occurred()) {
             return NULL;
         }
+        FT_ATOMIC_STORE_SSIZE_RELAXED(module_state->field_limit, new_limit_value);
     }
-    return PyLong_FromLong(old_limit);
+    return PyLong_FromSsize_t(old_limit);
 }
 
 static PyType_Slot error_slots[] = {
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 574cb8014493c4..3d7cb1b1164843 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -454,20 +454,17 @@ class _ctypes.CType_Type "PyObject *" "clinic_state()->CType_Type"
 static int
 CType_Type_traverse(PyObject *self, visitproc visit, void *arg)
 {
-    ctypes_state *st = get_module_state_by_def_final(Py_TYPE(self));
-    if (st && st->PyCType_Type) {
-        StgInfo *info;
-        if (PyStgInfo_FromType(st, self, &info) < 0) {
-            PyErr_WriteUnraisable(self);
-        }
-        if (info) {
-            Py_VISIT(info->proto);
-            Py_VISIT(info->argtypes);
-            Py_VISIT(info->converters);
-            Py_VISIT(info->restype);
-            Py_VISIT(info->checker);
-            Py_VISIT(info->module);
-        }
+    StgInfo *info = _PyStgInfo_FromType_NoState(self);
+    if (!info) {
+        PyErr_WriteUnraisable(self);
+    }
+    if (info) {
+        Py_VISIT(info->proto);
+        Py_VISIT(info->argtypes);
+        Py_VISIT(info->converters);
+        Py_VISIT(info->restype);
+        Py_VISIT(info->checker);
+        Py_VISIT(info->module);
     }
     Py_VISIT(Py_TYPE(self));
     return PyType_Type.tp_traverse(self, visit, arg);
@@ -488,15 +485,12 @@ ctype_clear_stginfo(StgInfo *info)
 static int
 CType_Type_clear(PyObject *self)
 {
-    ctypes_state *st = get_module_state_by_def_final(Py_TYPE(self));
-    if (st && st->PyCType_Type) {
-        StgInfo *info;
-        if (PyStgInfo_FromType(st, self, &info) < 0) {
-            PyErr_WriteUnraisable(self);
-        }
-        if (info) {
-            ctype_clear_stginfo(info);
-        }
+    StgInfo *info = _PyStgInfo_FromType_NoState(self);
+    if (!info) {
+        PyErr_WriteUnraisable(self);
+    }
+    if (info) {
+        ctype_clear_stginfo(info);
     }
     return PyType_Type.tp_clear(self);
 }
@@ -504,22 +498,20 @@ CType_Type_clear(PyObject *self)
 static void
 CType_Type_dealloc(PyObject *self)
 {
-    ctypes_state *st = get_module_state_by_def_final(Py_TYPE(self));
-    if (st && st->PyCType_Type) {
-        StgInfo *info;
-        if (PyStgInfo_FromType(st, self, &info) < 0) {
-            PyErr_WriteUnraisable(self);
-        }
-        if (info) {
-            PyMem_Free(info->ffi_type_pointer.elements);
-            info->ffi_type_pointer.elements = NULL;
-            PyMem_Free(info->format);
-            info->format = NULL;
-            PyMem_Free(info->shape);
-            info->shape = NULL;
-            ctype_clear_stginfo(info);
-        }
+    StgInfo *info = _PyStgInfo_FromType_NoState(self);
+    if (!info) {
+        PyErr_WriteUnraisable(self);
+    }
+    if (info) {
+        PyMem_Free(info->ffi_type_pointer.elements);
+        info->ffi_type_pointer.elements = NULL;
+        PyMem_Free(info->format);
+        info->format = NULL;
+        PyMem_Free(info->shape);
+        info->shape = NULL;
+        ctype_clear_stginfo(info);
     }
+
     PyTypeObject *tp = Py_TYPE(self);
     PyType_Type.tp_dealloc(self);
     Py_DECREF(tp);
@@ -966,32 +958,41 @@ CDataType_in_dll_impl(PyObject *type, PyTypeObject *cls, PyObject *dll,
         return NULL;
     }
 
+#undef USE_DLERROR
 #ifdef MS_WIN32
     Py_BEGIN_ALLOW_THREADS
     address = (void *)GetProcAddress(handle, name);
     Py_END_ALLOW_THREADS
-    if (!address) {
-        PyErr_Format(PyExc_ValueError,
-                     "symbol '%s' not found",
-                     name);
-        return NULL;
-    }
 #else
+    #ifdef __CYGWIN__
+        // dlerror() isn't very helpful on cygwin
+    #else
+        #define USE_DLERROR
+        /* dlerror() always returns the latest error.
+         *
+         * Clear the previous value before calling dlsym(),
+         * to ensure we can tell if our call resulted in an error.
+         */
+        (void)dlerror();
+    #endif
     address = (void *)dlsym(handle, name);
-    if (!address) {
-#ifdef __CYGWIN__
-/* dlerror() isn't very helpful on cygwin */
-        PyErr_Format(PyExc_ValueError,
-                     "symbol '%s' not found",
-                     name);
-#else
-        PyErr_SetString(PyExc_ValueError, dlerror());
 #endif
+
+    if (address) {
+        ctypes_state *st = get_module_state_by_def(Py_TYPE(type));
+        return PyCData_AtAddress(st, type, address);
+    }
+
+    #ifdef USE_DLERROR
+    const char *dlerr = dlerror();
+    if (dlerr) {
+        _PyErr_SetLocaleString(PyExc_ValueError, dlerr);
         return NULL;
     }
-#endif
-    ctypes_state *st = get_module_state_by_def(Py_TYPE(type));
-    return PyCData_AtAddress(st, type, address);
+    #endif
+#undef USE_DLERROR
+    PyErr_Format(PyExc_ValueError, "symbol '%s' not found", name);
+    return NULL;
 }
 
 /*[clinic input]
@@ -1046,8 +1047,13 @@ CDataType_from_param_impl(PyObject *type, PyTypeObject *cls, PyObject *value)
         return NULL;
     }
     if (as_parameter) {
+        if (_Py_EnterRecursiveCall(" while processing _as_parameter_")) {
+            Py_DECREF(as_parameter);
+            return NULL;
+        }
         value = CDataType_from_param_impl(type, cls, as_parameter);
         Py_DECREF(as_parameter);
+        _Py_LeaveRecursiveCall();
         return value;
     }
     PyErr_Format(PyExc_TypeError,
@@ -1834,8 +1840,13 @@ c_wchar_p_from_param_impl(PyObject *type, PyTypeObject *cls, PyObject *value)
         return NULL;
     }
     if (as_parameter) {
+        if (_Py_EnterRecursiveCall(" while processing _as_parameter_")) {
+            Py_DECREF(as_parameter);
+            return NULL;
+        }
         value = c_wchar_p_from_param_impl(type, cls, as_parameter);
         Py_DECREF(as_parameter);
+        _Py_LeaveRecursiveCall();
         return value;
     }
     PyErr_Format(PyExc_TypeError,
@@ -1918,8 +1929,13 @@ c_char_p_from_param_impl(PyObject *type, PyTypeObject *cls, PyObject *value)
         return NULL;
     }
     if (as_parameter) {
+        if (_Py_EnterRecursiveCall(" while processing _as_parameter_")) {
+            Py_DECREF(as_parameter);
+            return NULL;
+        }
         value = c_char_p_from_param_impl(type, cls, as_parameter);
         Py_DECREF(as_parameter);
+        _Py_LeaveRecursiveCall();
         return value;
     }
     PyErr_Format(PyExc_TypeError,
@@ -2070,8 +2086,13 @@ c_void_p_from_param_impl(PyObject *type, PyTypeObject *cls, PyObject *value)
         return NULL;
     }
     if (as_parameter) {
+        if (_Py_EnterRecursiveCall(" while processing _as_parameter_")) {
+            Py_DECREF(as_parameter);
+            return NULL;
+        }
         value = c_void_p_from_param_impl(type, cls, as_parameter);
         Py_DECREF(as_parameter);
+        _Py_LeaveRecursiveCall();
         return value;
     }
     PyErr_Format(PyExc_TypeError,
@@ -2296,9 +2317,14 @@ PyCSimpleType_init(PyObject *self, PyObject *args, PyObject *kwds)
             if (!meth) {
                 return -1;
             }
-            x = PyDict_SetItemString(((PyTypeObject*)self)->tp_dict,
-                                     ml->ml_name,
-                                     meth);
+            PyObject *name = PyUnicode_FromString(ml->ml_name);
+            if (name == NULL) {
+                Py_DECREF(meth);
+                return -1;
+            }
+            PyUnicode_InternInPlace(&name);
+            x = PyDict_SetItem(((PyTypeObject*)self)->tp_dict, name, meth);
+            Py_DECREF(name);
             Py_DECREF(meth);
             if (x == -1) {
                 return -1;
@@ -2416,15 +2442,15 @@ PyCSimpleType_from_param_impl(PyObject *type, PyTypeObject *cls,
         return NULL;
     }
     if (as_parameter) {
-        if (_Py_EnterRecursiveCall("while processing _as_parameter_")) {
+        if (_Py_EnterRecursiveCall(" while processing _as_parameter_")) {
             Py_DECREF(as_parameter);
             Py_XDECREF(exc);
             return NULL;
         }
         value = PyCSimpleType_from_param_impl(type, cls, as_parameter);
-        _Py_LeaveRecursiveCall();
         Py_DECREF(as_parameter);
         Py_XDECREF(exc);
+        _Py_LeaveRecursiveCall();
         return value;
     }
     if (exc) {
@@ -3746,6 +3772,7 @@ PyCFuncPtr_FromDll(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
+#undef USE_DLERROR
 #ifdef MS_WIN32
     address = FindAddress(handle, name, (PyObject *)type);
     if (!address) {
@@ -3761,20 +3788,34 @@ PyCFuncPtr_FromDll(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 #else
+    #ifdef __CYGWIN__
+        //dlerror() isn't very helpful on cygwin */
+    #else
+        #define USE_DLERROR
+        /* dlerror() always returns the latest error.
+         *
+         * Clear the previous value before calling dlsym(),
+         * to ensure we can tell if our call resulted in an error.
+         */
+        (void)dlerror();
+    #endif
     address = (PPROC)dlsym(handle, name);
+
     if (!address) {
-#ifdef __CYGWIN__
-/* dlerror() isn't very helpful on cygwin */
-        PyErr_Format(PyExc_AttributeError,
-                     "function '%s' not found",
-                     name);
-#else
-        PyErr_SetString(PyExc_AttributeError, dlerror());
-#endif
+    #ifdef USE_DLERROR
+        const char *dlerr = dlerror();
+        if (dlerr) {
+            _PyErr_SetLocaleString(PyExc_AttributeError, dlerr);
+            Py_DECREF(ftuple);
+            return NULL;
+        }
+    #endif
+        PyErr_Format(PyExc_AttributeError, "function '%s' not found", name);
         Py_DECREF(ftuple);
         return NULL;
     }
 #endif
+#undef USE_DLERROR
     ctypes_state *st = get_module_state_by_def(Py_TYPE(type));
     if (!_validate_paramflags(st, type, paramflags)) {
         Py_DECREF(ftuple);
@@ -5947,7 +5988,7 @@ module_free(void *module)
 
 static PyModuleDef_Slot module_slots[] = {
     {Py_mod_exec, _ctypes_mod_exec},
-    {Py_mod_multiple_interpreters, Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
     {Py_mod_gil, Py_MOD_GIL_NOT_USED},
     {0, NULL}
 };
diff --git a/Modules/_ctypes/_ctypes_test.c b/Modules/_ctypes/_ctypes_test.c
index f46f6362ddd03b..2d4877d42d7ee2 100644
--- a/Modules/_ctypes/_ctypes_test.c
+++ b/Modules/_ctypes/_ctypes_test.c
@@ -178,7 +178,7 @@ _testfunc_array_in_struct3B_set_defaults(void)
 
 /*
  * Test3C struct tests the MAX_STRUCT_SIZE 32. Structs containing arrays of up
- * to four floating point types are passed in registers on Arm platforms.
+ * to four floating-point types are passed in registers on Arm platforms.
  * This struct is used for within bounds test on Arm platfroms and for an
  * out-of-bounds tests for platfroms where MAX_STRUCT_SIZE is less than 32.
  * See gh-110190.
@@ -202,7 +202,7 @@ _testfunc_array_in_struct3C_set_defaults(void)
 
 /*
  * Test3D struct tests the MAX_STRUCT_SIZE 64. Structs containing arrays of up
- * to eight floating point types are passed in registers on PPC64LE platforms.
+ * to eight floating-point types are passed in registers on PPC64LE platforms.
  * This struct is used for within bounds test on PPC64LE platfroms and for an
  * out-of-bounds tests for platfroms where MAX_STRUCT_SIZE is less than 64.
  * See gh-110190.
diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
index cbed2f32caa6c4..f9864ebb735ddf 100644
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -1579,10 +1579,11 @@ static PyObject *py_dl_open(PyObject *self, PyObject *args)
     Py_XDECREF(name2);
     if (!handle) {
         const char *errmsg = dlerror();
-        if (!errmsg)
-            errmsg = "dlopen() error";
-        PyErr_SetString(PyExc_OSError,
-                               errmsg);
+        if (errmsg) {
+            _PyErr_SetLocaleString(PyExc_OSError, errmsg);
+            return NULL;
+        }
+        PyErr_SetString(PyExc_OSError, "dlopen() error");
         return NULL;
     }
     return PyLong_FromVoidPtr(handle);
@@ -1595,8 +1596,12 @@ static PyObject *py_dl_close(PyObject *self, PyObject *args)
     if (!PyArg_ParseTuple(args, "O&:dlclose", &_parse_voidp, &handle))
         return NULL;
     if (dlclose(handle)) {
-        PyErr_SetString(PyExc_OSError,
-                               dlerror());
+        const char *errmsg = dlerror();
+        if (errmsg) {
+            _PyErr_SetLocaleString(PyExc_OSError, errmsg);
+            return NULL;
+        }
+        PyErr_SetString(PyExc_OSError, "dlclose() error");
         return NULL;
     }
     Py_RETURN_NONE;
@@ -1614,13 +1619,32 @@ static PyObject *py_dl_sym(PyObject *self, PyObject *args)
     if (PySys_Audit("ctypes.dlsym/handle", "O", args) < 0) {
         return NULL;
     }
+#undef USE_DLERROR
+    #ifdef __CYGWIN__
+        // dlerror() isn't very helpful on cygwin
+    #else
+        #define USE_DLERROR
+        /* dlerror() always returns the latest error.
+         *
+         * Clear the previous value before calling dlsym(),
+         * to ensure we can tell if our call resulted in an error.
+         */
+        (void)dlerror();
+    #endif
     ptr = dlsym((void*)handle, name);
-    if (!ptr) {
-        PyErr_SetString(PyExc_OSError,
-                               dlerror());
+    if (ptr) {
+        return PyLong_FromVoidPtr(ptr);
+    }
+    #ifdef USE_DLERROR
+    const char *errmsg = dlerror();
+    if (errmsg) {
+        _PyErr_SetLocaleString(PyExc_OSError, errmsg);
         return NULL;
     }
-    return PyLong_FromVoidPtr(ptr);
+    #endif
+    #undef USE_DLERROR
+    PyErr_Format(PyExc_OSError, "symbol '%s' not found", name);
+    return NULL;
 }
 #endif
 
diff --git a/Modules/_ctypes/clinic/_ctypes.c.h b/Modules/_ctypes/clinic/_ctypes.c.h
index 98a84cc14f4386..e1d5a17cbe7d68 100644
--- a/Modules/_ctypes/clinic/_ctypes.c.h
+++ b/Modules/_ctypes/clinic/_ctypes.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
@@ -607,4 +610,4 @@ Simple_from_outparm(PyObject *self, PyTypeObject *cls, PyObject *const *args, Py
     }
     return Simple_from_outparm_impl(self, cls);
 }
-/*[clinic end generated code: output=9c6539a3559e6088 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a90886be2a294ee6 input=a9049054013a1b77]*/
diff --git a/Modules/_ctypes/ctypes.h b/Modules/_ctypes/ctypes.h
index 20c68134be2804..d46675ae996b43 100644
--- a/Modules/_ctypes/ctypes.h
+++ b/Modules/_ctypes/ctypes.h
@@ -101,20 +101,6 @@ get_module_state_by_def(PyTypeObject *cls)
     return get_module_state(mod);
 }
 
-static inline ctypes_state *
-get_module_state_by_def_final(PyTypeObject *cls)
-{
-    if (cls->tp_mro == NULL) {
-        return NULL;
-    }
-    PyObject *mod = PyType_GetModuleByDef(cls, &_ctypesmodule);
-    if (mod == NULL) {
-        PyErr_Clear();
-        return NULL;
-    }
-    return get_module_state(mod);
-}
-
 
 extern PyType_Spec carg_spec;
 extern PyType_Spec cfield_spec;
@@ -508,6 +494,20 @@ PyStgInfo_FromAny(ctypes_state *state, PyObject *obj, StgInfo **result)
     return _stginfo_from_type(state, Py_TYPE(obj), result);
 }
 
+/* A variant of PyStgInfo_FromType that doesn't need the state,
+ * so it can be called from finalization functions when the module
+ * state is torn down. Does no checks; cannot fail.
+ * This inlines the current implementation PyObject_GetTypeData,
+ * so it might break in the future.
+ */
+static inline StgInfo *
+_PyStgInfo_FromType_NoState(PyObject *type)
+{
+    size_t type_basicsize =_Py_SIZE_ROUND_UP(PyType_Type.tp_basicsize,
+                                             ALIGNOF_MAX_ALIGN_T);
+    return (StgInfo *)((char *)type + type_basicsize);
+}
+
 // Initialize StgInfo on a newly created type
 static inline StgInfo *
 PyStgInfo_Init(ctypes_state *state, PyTypeObject *type)
diff --git a/Modules/_curses_panel.c b/Modules/_curses_panel.c
index 125c72dbbe7712..bbbb62c9066df0 100644
--- a/Modules/_curses_panel.c
+++ b/Modules/_curses_panel.c
@@ -19,7 +19,13 @@ static const char PyCursesVersion[] = "2.1";
 
 #include "py_curses.h"
 
-#include <panel.h>
+#if defined(HAVE_NCURSESW_PANEL_H)
+#  include <ncursesw/panel.h>
+#elif defined(HAVE_NCURSES_PANEL_H)
+#  include <ncurses/panel.h>
+#elif defined(HAVE_PANEL_H)
+#  include <panel.h>
+#endif
 
 typedef struct {
     PyObject *PyCursesError;
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index ee3d4c6eae7546..a7cbe81226eb19 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -128,7 +128,7 @@ static const char PyCursesVersion[] = "2.2";
 #include <langinfo.h>
 #endif
 
-#if !defined(HAVE_NCURSES_H) && (defined(sgi) || defined(__sun) || defined(SCO5))
+#if !defined(NCURSES_VERSION) && (defined(sgi) || defined(__sun) || defined(SCO5))
 #define STRICT_SYSV_CURSES       /* Don't use ncurses extensions */
 typedef chtype attr_t;           /* No attr_t type is available */
 #endif
@@ -137,7 +137,7 @@ typedef chtype attr_t;           /* No attr_t type is available */
 #define STRICT_SYSV_CURSES
 #endif
 
-#if NCURSES_EXT_FUNCS+0 >= 20170401 && NCURSES_EXT_COLORS+0 >= 20170401
+#if defined(HAVE_NCURSESW) && NCURSES_EXT_FUNCS+0 >= 20170401 && NCURSES_EXT_COLORS+0 >= 20170401
 #define _NCURSES_EXTENDED_COLOR_FUNCS   1
 #else
 #define _NCURSES_EXTENDED_COLOR_FUNCS   0
@@ -3688,7 +3688,10 @@ static int
 _curses_napms_impl(PyObject *module, int ms)
 /*[clinic end generated code: output=5f292a6a724491bd input=c6d6e01f2f1df9f7]*/
 {
-    PyCursesInitialised;
+    if (initialised != TRUE) {
+        PyErr_SetString(PyCursesError, "must call initscr() first");
+        return -1;
+    }
 
     return napms(ms);
 }
@@ -4071,9 +4074,9 @@ NoArgNoReturnFunctionBody(resetty)
 /*[clinic input]
 _curses.resizeterm
 
-    nlines: int
+    nlines: short
         Height.
-    ncols: int
+    ncols: short
         Width.
     /
 
@@ -4084,8 +4087,8 @@ window dimensions (in particular the SIGWINCH handler).
 [clinic start generated code]*/
 
 static PyObject *
-_curses_resizeterm_impl(PyObject *module, int nlines, int ncols)
-/*[clinic end generated code: output=56d6bcc5194ad055 input=0fca02ebad5ffa82]*/
+_curses_resizeterm_impl(PyObject *module, short nlines, short ncols)
+/*[clinic end generated code: output=4de3abab50c67f02 input=414e92a63e3e9899]*/
 {
     PyObject *result;
 
@@ -4107,9 +4110,9 @@ _curses_resizeterm_impl(PyObject *module, int nlines, int ncols)
 /*[clinic input]
 _curses.resize_term
 
-    nlines: int
+    nlines: short
         Height.
-    ncols: int
+    ncols: short
         Width.
     /
 
@@ -4123,8 +4126,8 @@ without additional interaction with the application.
 [clinic start generated code]*/
 
 static PyObject *
-_curses_resize_term_impl(PyObject *module, int nlines, int ncols)
-/*[clinic end generated code: output=9e26d8b9ea311ed2 input=2197edd05b049ed4]*/
+_curses_resize_term_impl(PyObject *module, short nlines, short ncols)
+/*[clinic end generated code: output=46c6d749fa291dbd input=276afa43d8ea7091]*/
 {
     PyObject *result;
 
diff --git a/Modules/_datetimemodule.c b/Modules/_datetimemodule.c
index 8164715a66ff09..8cfa04f676d861 100644
--- a/Modules/_datetimemodule.c
+++ b/Modules/_datetimemodule.c
@@ -25,24 +25,20 @@
 #  include <winsock2.h>         /* struct timeval */
 #endif
 
-#define PyDate_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateType)
-#define PyDate_CheckExact(op) Py_IS_TYPE(op, &PyDateTime_DateType)
 
-#define PyDateTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateTimeType)
-#define PyDateTime_CheckExact(op) Py_IS_TYPE(op, &PyDateTime_DateTimeType)
-
-#define PyTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeType)
-#define PyTime_CheckExact(op) Py_IS_TYPE(op, &PyDateTime_TimeType)
-
-#define PyDelta_Check(op) PyObject_TypeCheck(op, &PyDateTime_DeltaType)
-#define PyDelta_CheckExact(op) Py_IS_TYPE(op, &PyDateTime_DeltaType)
-
-#define PyTZInfo_Check(op) PyObject_TypeCheck(op, &PyDateTime_TZInfoType)
-#define PyTZInfo_CheckExact(op) Py_IS_TYPE(op, &PyDateTime_TZInfoType)
+/* forward declarations */
+static PyTypeObject PyDateTime_DateType;
+static PyTypeObject PyDateTime_DateTimeType;
+static PyTypeObject PyDateTime_TimeType;
+static PyTypeObject PyDateTime_DeltaType;
+static PyTypeObject PyDateTime_TZInfoType;
+static PyTypeObject PyDateTime_TimeZoneType;
 
-#define PyTimezone_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeZoneType)
 
 typedef struct {
+    /* Module heap types. */
+    PyTypeObject *isocalendar_date_type;
+
     /* Conversion factors. */
     PyObject *us_per_ms;       // 1_000
     PyObject *us_per_second;   // 1_000_000
@@ -52,16 +48,192 @@ typedef struct {
     PyObject *us_per_week;     // 1e6 * 3600 * 24 * 7 as Python int
     PyObject *seconds_per_day; // 3600 * 24 as Python int
 
-    /* The interned UTC timezone instance */
-    PyObject *utc;
-
     /* The interned Unix epoch datetime instance */
     PyObject *epoch;
 } datetime_state;
 
-static datetime_state _datetime_global_state;
+/* The module has a fixed number of static objects, due to being exposed
+ * through the datetime C-API.  There are five types exposed directly,
+ * one type exposed indirectly, and one singleton constant (UTC).
+ *
+ * Each of these objects is hidden behind a macro in the same way as
+ * the per-module objects stored in module state.  The macros for the
+ * static objects don't need to be passed a state, but the consistency
+ * of doing so is more clear.  We use a dedicated noop macro, NO_STATE,
+ * to make the special case obvious. */
+
+#define NO_STATE NULL
+
+#define DATE_TYPE(st) &PyDateTime_DateType
+#define DATETIME_TYPE(st) &PyDateTime_DateTimeType
+#define TIME_TYPE(st) &PyDateTime_TimeType
+#define DELTA_TYPE(st) &PyDateTime_DeltaType
+#define TZINFO_TYPE(st) &PyDateTime_TZInfoType
+#define TIMEZONE_TYPE(st) &PyDateTime_TimeZoneType
+#define ISOCALENDAR_DATE_TYPE(st) st->isocalendar_date_type
+
+#define PyDate_Check(op) PyObject_TypeCheck(op, DATE_TYPE(NO_STATE))
+#define PyDate_CheckExact(op) Py_IS_TYPE(op, DATE_TYPE(NO_STATE))
+
+#define PyDateTime_Check(op) PyObject_TypeCheck(op, DATETIME_TYPE(NO_STATE))
+#define PyDateTime_CheckExact(op) Py_IS_TYPE(op, DATETIME_TYPE(NO_STATE))
+
+#define PyTime_Check(op) PyObject_TypeCheck(op, TIME_TYPE(NO_STATE))
+#define PyTime_CheckExact(op) Py_IS_TYPE(op, TIME_TYPE(NO_STATE))
+
+#define PyDelta_Check(op) PyObject_TypeCheck(op, DELTA_TYPE(NO_STATE))
+#define PyDelta_CheckExact(op) Py_IS_TYPE(op, DELTA_TYPE(NO_STATE))
+
+#define PyTZInfo_Check(op) PyObject_TypeCheck(op, TZINFO_TYPE(NO_STATE))
+#define PyTZInfo_CheckExact(op) Py_IS_TYPE(op, TZINFO_TYPE(NO_STATE))
+
+#define PyTimezone_Check(op) PyObject_TypeCheck(op, TIMEZONE_TYPE(NO_STATE))
+
+#define CONST_US_PER_MS(st) st->us_per_ms
+#define CONST_US_PER_SECOND(st) st->us_per_second
+#define CONST_US_PER_MINUTE(st) st->us_per_minute
+#define CONST_US_PER_HOUR(st) st->us_per_hour
+#define CONST_US_PER_DAY(st) st->us_per_day
+#define CONST_US_PER_WEEK(st) st->us_per_week
+#define CONST_SEC_PER_DAY(st) st->seconds_per_day
+#define CONST_EPOCH(st) st->epoch
+#define CONST_UTC(st) ((PyObject *)&utc_timezone)
+
+static datetime_state *
+get_module_state(PyObject *module)
+{
+    void *state = _PyModule_GetState(module);
+    assert(state != NULL);
+    return (datetime_state *)state;
+}
+
+
+#define INTERP_KEY ((PyObject *)&_Py_ID(cached_datetime_module))
+
+static PyObject *
+get_current_module(PyInterpreterState *interp, int *p_reloading)
+{
+    PyObject *mod = NULL;
+    int reloading = 0;
+
+    PyObject *dict = PyInterpreterState_GetDict(interp);
+    if (dict == NULL) {
+        goto error;
+    }
+    PyObject *ref = NULL;
+    if (PyDict_GetItemRef(dict, INTERP_KEY, &ref) < 0) {
+        goto error;
+    }
+    if (ref != NULL) {
+        reloading = 1;
+        if (ref != Py_None) {
+            (void)PyWeakref_GetRef(ref, &mod);
+            if (mod == Py_None) {
+                Py_CLEAR(mod);
+            }
+            Py_DECREF(ref);
+        }
+    }
+    if (p_reloading != NULL) {
+        *p_reloading = reloading;
+    }
+    return mod;
+
+error:
+    assert(PyErr_Occurred());
+    return NULL;
+}
+
+static PyModuleDef datetimemodule;
+
+static datetime_state *
+_get_current_state(PyObject **p_mod)
+{
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    PyObject *mod = get_current_module(interp, NULL);
+    if (mod == NULL) {
+        assert(!PyErr_Occurred());
+        if (PyErr_Occurred()) {
+            return NULL;
+        }
+        /* The static types can outlive the module,
+         * so we must re-import the module. */
+        mod = PyImport_ImportModule("_datetime");
+        if (mod == NULL) {
+            return NULL;
+        }
+    }
+    datetime_state *st = get_module_state(mod);
+    *p_mod = mod;
+    return st;
+}
+
+#define GET_CURRENT_STATE(MOD_VAR)  \
+    _get_current_state(&MOD_VAR)
+#define RELEASE_CURRENT_STATE(ST_VAR, MOD_VAR)  \
+    Py_DECREF(MOD_VAR)
+
+static int
+set_current_module(PyInterpreterState *interp, PyObject *mod)
+{
+    assert(mod != NULL);
+    PyObject *dict = PyInterpreterState_GetDict(interp);
+    if (dict == NULL) {
+        return -1;
+    }
+    PyObject *ref = PyWeakref_NewRef(mod, NULL);
+    if (ref == NULL) {
+        return -1;
+    }
+    int rc = PyDict_SetItem(dict, INTERP_KEY, ref);
+    Py_DECREF(ref);
+    return rc;
+}
+
+static void
+clear_current_module(PyInterpreterState *interp, PyObject *expected)
+{
+    PyObject *exc = PyErr_GetRaisedException();
+
+    PyObject *dict = PyInterpreterState_GetDict(interp);
+    if (dict == NULL) {
+        goto error;
+    }
+
+    if (expected != NULL) {
+        PyObject *ref = NULL;
+        if (PyDict_GetItemRef(dict, INTERP_KEY, &ref) < 0) {
+            goto error;
+        }
+        if (ref != NULL) {
+            PyObject *current = NULL;
+            int rc = PyWeakref_GetRef(ref, &current);
+            /* We only need "current" for pointer comparison. */
+            Py_XDECREF(current);
+            Py_DECREF(ref);
+            if (rc < 0) {
+                goto error;
+            }
+            if (current != expected) {
+                goto finally;
+            }
+        }
+    }
+
+    /* We use None to identify that the module was previously loaded. */
+    if (PyDict_SetItem(dict, INTERP_KEY, Py_None) < 0) {
+        goto error;
+    }
+
+    goto finally;
+
+error:
+    PyErr_WriteUnraisable(NULL);
+
+finally:
+    PyErr_SetRaisedException(exc);
+}
 
-#define STATIC_STATE() (&_datetime_global_state)
 
 /* We require that C int be at least 32 bits, and use int virtually
  * everywhere.  In just a few cases we use a temp long, where a Python
@@ -142,25 +314,16 @@ static datetime_state _datetime_global_state;
  */
 #define MONTH_IS_SANE(M) ((unsigned int)(M) - 1 < 12)
 
-/* Forward declarations. */
-static PyTypeObject PyDateTime_DateType;
-static PyTypeObject PyDateTime_DateTimeType;
-static PyTypeObject PyDateTime_DeltaType;
-static PyTypeObject PyDateTime_IsoCalendarDateType;
-static PyTypeObject PyDateTime_TimeType;
-static PyTypeObject PyDateTime_TZInfoType;
-static PyTypeObject PyDateTime_TimeZoneType;
-
 static int check_tzinfo_subclass(PyObject *p);
 
 /*[clinic input]
 module datetime
-class datetime.datetime "PyDateTime_DateTime *" "&PyDateTime_DateTimeType"
-class datetime.date "PyDateTime_Date *" "&PyDateTime_DateType"
-class datetime.time "PyDateTime_Time *" "&PyDateTime_TimeType"
-class datetime.IsoCalendarDate "PyDateTime_IsoCalendarDate *" "&PyDateTime_IsoCalendarDateType"
+class datetime.datetime "PyDateTime_DateTime *" "get_datetime_state()->datetime_type"
+class datetime.date "PyDateTime_Date *" "get_datetime_state()->date_type"
+class datetime.time "PyDateTime_Time *" "get_datetime_state()->time_type"
+class datetime.IsoCalendarDate "PyDateTime_IsoCalendarDate *" "get_datetime_state()->isocalendar_date_type"
 [clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6f65a48dd22fa40f]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=c8f3d834a860d50a]*/
 
 #include "clinic/_datetimemodule.c.h"
 
@@ -979,7 +1142,7 @@ new_date_ex(int year, int month, int day, PyTypeObject *type)
 }
 
 #define new_date(year, month, day) \
-    new_date_ex(year, month, day, &PyDateTime_DateType)
+    new_date_ex(year, month, day, DATE_TYPE(NO_STATE))
 
 // Forward declaration
 static PyObject *
@@ -991,10 +1154,10 @@ new_date_subclass_ex(int year, int month, int day, PyObject *cls)
 {
     PyObject *result;
     // We have "fast path" constructors for two subclasses: date and datetime
-    if ((PyTypeObject *)cls == &PyDateTime_DateType) {
+    if ((PyTypeObject *)cls == DATE_TYPE(NO_STATE)) {
         result = new_date_ex(year, month, day, (PyTypeObject *)cls);
     }
-    else if ((PyTypeObject *)cls == &PyDateTime_DateTimeType) {
+    else if ((PyTypeObject *)cls == DATETIME_TYPE(NO_STATE)) {
         result = new_datetime_ex(year, month, day, 0, 0, 0, 0, Py_None,
                                  (PyTypeObject *)cls);
     }
@@ -1048,8 +1211,7 @@ new_datetime_ex(int year, int month, int day, int hour, int minute,
 }
 
 #define new_datetime(y, m, d, hh, mm, ss, us, tzinfo, fold) \
-    new_datetime_ex2(y, m, d, hh, mm, ss, us, tzinfo, fold, \
-                    &PyDateTime_DateTimeType)
+    new_datetime_ex2(y, m, d, hh, mm, ss, us, tzinfo, fold, DATETIME_TYPE(NO_STATE))
 
 static PyObject *
 call_subclass_fold(PyObject *cls, int fold, const char *format, ...)
@@ -1088,9 +1250,10 @@ call_subclass_fold(PyObject *cls, int fold, const char *format, ...)
 static PyObject *
 new_datetime_subclass_fold_ex(int year, int month, int day, int hour, int minute,
                               int second, int usecond, PyObject *tzinfo,
-                              int fold, PyObject *cls) {
+                              int fold, PyObject *cls)
+{
     PyObject* dt;
-    if ((PyTypeObject*)cls == &PyDateTime_DateTimeType) {
+    if ((PyTypeObject*)cls == DATETIME_TYPE(NO_STATE)) {
         // Use the fast path constructor
         dt = new_datetime(year, month, day, hour, minute, second, usecond,
                           tzinfo, fold);
@@ -1151,15 +1314,15 @@ new_time_ex(int hour, int minute, int second, int usecond,
     return new_time_ex2(hour, minute, second, usecond, tzinfo, 0, type);
 }
 
-#define new_time(hh, mm, ss, us, tzinfo, fold)                       \
-    new_time_ex2(hh, mm, ss, us, tzinfo, fold, &PyDateTime_TimeType)
+#define new_time(hh, mm, ss, us, tzinfo, fold)  \
+    new_time_ex2(hh, mm, ss, us, tzinfo, fold, TIME_TYPE(NO_STATE))
 
 static PyObject *
 new_time_subclass_fold_ex(int hour, int minute, int second, int usecond,
                           PyObject *tzinfo, int fold, PyObject *cls)
 {
     PyObject *t;
-    if ((PyTypeObject*)cls == &PyDateTime_TimeType) {
+    if ((PyTypeObject*)cls == TIME_TYPE(NO_STATE)) {
         // Use the fast path constructor
         t = new_time(hour, minute, second, usecond, tzinfo, fold);
     }
@@ -1172,6 +1335,8 @@ new_time_subclass_fold_ex(int hour, int minute, int second, int usecond,
     return t;
 }
 
+static PyDateTime_Delta * look_up_delta(int, int, int, PyTypeObject *);
+
 /* Create a timedelta instance.  Normalize the members iff normalize is
  * true.  Passing false is a speed optimization, if you know for sure
  * that seconds and microseconds are already in their proper ranges.  In any
@@ -1192,6 +1357,12 @@ new_delta_ex(int days, int seconds, int microseconds, int normalize,
     if (check_delta_day_range(days) < 0)
         return NULL;
 
+    self = look_up_delta(days, seconds, microseconds, type);
+    if (self != NULL) {
+        return (PyObject *)self;
+    }
+    assert(!PyErr_Occurred());
+
     self = (PyDateTime_Delta *) (type->tp_alloc(type, 0));
     if (self != NULL) {
         self->hashcode = -1;
@@ -1203,7 +1374,7 @@ new_delta_ex(int days, int seconds, int microseconds, int normalize,
 }
 
 #define new_delta(d, s, us, normalize)  \
-    new_delta_ex(d, s, us, normalize, &PyDateTime_DeltaType)
+    new_delta_ex(d, s, us, normalize, DELTA_TYPE(NO_STATE))
 
 
 typedef struct
@@ -1213,6 +1384,8 @@ typedef struct
     PyObject *name;
 } PyDateTime_TimeZone;
 
+static PyDateTime_TimeZone * look_up_timezone(PyObject *offset, PyObject *name);
+
 /* Create new timezone instance checking offset range.  This
    function does not check the name argument.  Caller must assure
    that offset is a timedelta instance and name is either NULL
@@ -1221,12 +1394,18 @@ static PyObject *
 create_timezone(PyObject *offset, PyObject *name)
 {
     PyDateTime_TimeZone *self;
-    PyTypeObject *type = &PyDateTime_TimeZoneType;
+    PyTypeObject *type = TIMEZONE_TYPE(NO_STATE);
 
     assert(offset != NULL);
     assert(PyDelta_Check(offset));
     assert(name == NULL || PyUnicode_Check(name));
 
+    self = look_up_timezone(offset, name);
+    if (self != NULL) {
+        return (PyObject *)self;
+    }
+    assert(!PyErr_Occurred());
+
     self = (PyDateTime_TimeZone *)(type->tp_alloc(type, 0));
     if (self == NULL) {
         return NULL;
@@ -1237,6 +1416,7 @@ create_timezone(PyObject *offset, PyObject *name)
 }
 
 static int delta_bool(PyDateTime_Delta *self);
+static PyDateTime_TimeZone utc_timezone;
 
 static PyObject *
 new_timezone(PyObject *offset, PyObject *name)
@@ -1246,8 +1426,7 @@ new_timezone(PyObject *offset, PyObject *name)
     assert(name == NULL || PyUnicode_Check(name));
 
     if (name == NULL && delta_bool((PyDateTime_Delta *)offset) == 0) {
-        datetime_state *st = STATIC_STATE();
-        return Py_NewRef(st->utc);
+        return Py_NewRef(CONST_UTC(NO_STATE));
     }
     if ((GET_TD_DAYS(offset) == -1 &&
             GET_TD_SECONDS(offset) == 0 &&
@@ -1460,8 +1639,7 @@ tzinfo_from_isoformat_results(int rv, int tzoffset, int tz_useconds)
     if (rv == 1) {
         // Create a timezone from offset in seconds (0 returns UTC)
         if (tzoffset == 0) {
-            datetime_state *st = STATIC_STATE();
-            return Py_NewRef(st->utc);
+            return Py_NewRef(CONST_UTC(NO_STATE));
         }
 
         PyObject *delta = new_delta(0, tzoffset, tz_useconds, 1);
@@ -1568,7 +1746,7 @@ make_somezreplacement(PyObject *object, char *sep, PyObject *tzinfoarg)
     PyObject *tzinfo = get_tzinfo_member(object);
 
     if (tzinfo == Py_None || tzinfo == NULL) {
-        return PyBytes_FromStringAndSize(NULL, 0);
+        return PyUnicode_FromStringAndSize(NULL, 0);
     }
 
     assert(tzinfoarg != NULL);
@@ -1579,7 +1757,7 @@ make_somezreplacement(PyObject *object, char *sep, PyObject *tzinfoarg)
                          tzinfoarg) < 0)
         return NULL;
 
-    return PyBytes_FromStringAndSize(buf, strlen(buf));
+    return PyUnicode_FromString(buf);
 }
 
 static PyObject *
@@ -1636,7 +1814,7 @@ make_freplacement(PyObject *object)
     else
         sprintf(freplacement, "%06d", 0);
 
-    return PyBytes_FromStringAndSize(freplacement, strlen(freplacement));
+    return PyUnicode_FromString(freplacement);
 }
 
 /* I sure don't want to reproduce the strftime code from the time module,
@@ -1657,79 +1835,60 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
     PyObject *Zreplacement = NULL;      /* py string, replacement for %Z */
     PyObject *freplacement = NULL;      /* py string, replacement for %f */
 
-    const char *pin;            /* pointer to next char in input format */
-    Py_ssize_t flen;            /* length of input format */
-    char ch;                    /* next char in input format */
-
-    PyObject *newfmt = NULL;            /* py string, the output format */
-    char *pnew;         /* pointer to available byte in output format */
-    size_t totalnew;            /* number bytes total in output format buffer,
-                               exclusive of trailing \0 */
-    size_t usednew;     /* number bytes used so far in output format buffer */
-
-    const char *ptoappend;      /* ptr to string to append to output buffer */
-    Py_ssize_t ntoappend;       /* # of bytes to append to output buffer */
-
     assert(object && format && timetuple);
     assert(PyUnicode_Check(format));
-    /* Convert the input format to a C string and size */
-    pin = PyUnicode_AsUTF8AndSize(format, &flen);
-    if (!pin)
+
+    PyObject *strftime = _PyImport_GetModuleAttrString("time", "strftime");
+    if (strftime == NULL) {
         return NULL;
+    }
 
     /* Scan the input format, looking for %z/%Z/%f escapes, building
      * a new format.  Since computing the replacements for those codes
      * is expensive, don't unless they're actually used.
      */
-    if (flen > INT_MAX - 1) {
-        PyErr_NoMemory();
-        goto Done;
-    }
-
-    totalnew = flen + 1;        /* realistic if no %z/%Z */
-    newfmt = PyBytes_FromStringAndSize(NULL, totalnew);
-    if (newfmt == NULL) goto Done;
-    pnew = PyBytes_AsString(newfmt);
-    usednew = 0;
 
-    while ((ch = *pin++) != '\0') {
-        if (ch != '%') {
-            ptoappend = pin - 1;
-            ntoappend = 1;
+    _PyUnicodeWriter writer;
+    _PyUnicodeWriter_Init(&writer);
+    writer.overallocate = 1;
+
+    Py_ssize_t flen = PyUnicode_GET_LENGTH(format);
+    Py_ssize_t i = 0;
+    Py_ssize_t start = 0;
+    Py_ssize_t end = 0;
+    while (i != flen) {
+        i = PyUnicode_FindChar(format, '%', i, flen, 1);
+        if (i < 0) {
+            assert(!PyErr_Occurred());
+            break;
         }
-        else if ((ch = *pin++) == '\0') {
-        /* Null byte follows %, copy only '%'.
-         *
-         * Back the pin up one char so that we catch the null check
-         * the next time through the loop.*/
-            pin--;
-            ptoappend = pin - 1;
-            ntoappend = 1;
+        end = i;
+        i++;
+        if (i == flen) {
+            break;
         }
+        Py_UCS4 ch = PyUnicode_READ_CHAR(format, i);
+        i++;
         /* A % has been seen and ch is the character after it. */
-        else if (ch == 'z') {
+        PyObject *replacement = NULL;
+        if (ch == 'z') {
             /* %z -> +HHMM */
             if (zreplacement == NULL) {
                 zreplacement = make_somezreplacement(object, "", tzinfoarg);
                 if (zreplacement == NULL)
-                    goto Done;
+                    goto Error;
             }
-            assert(zreplacement != NULL);
-            assert(PyBytes_Check(zreplacement));
-            ptoappend = PyBytes_AS_STRING(zreplacement);
-            ntoappend = PyBytes_GET_SIZE(zreplacement);
+            replacement = zreplacement;
         }
-        else if (ch == ':' && *pin == 'z' && pin++) {
+        else if (ch == ':' && i < flen && PyUnicode_READ_CHAR(format, i) == 'z') {
             /* %:z -> +HH:MM */
+            i++;
             if (colonzreplacement == NULL) {
                 colonzreplacement = make_somezreplacement(object, ":", tzinfoarg);
                 if (colonzreplacement == NULL)
-                    goto Done;
+                    goto Error;
             }
-            assert(colonzreplacement != NULL);
-            assert(PyBytes_Check(colonzreplacement));
-            ptoappend = PyBytes_AS_STRING(colonzreplacement);
-            ntoappend = PyBytes_GET_SIZE(colonzreplacement);
+            replacement = colonzreplacement;
         }
         else if (ch == 'Z') {
             /* format tzname */
@@ -1737,79 +1896,63 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
                 Zreplacement = make_Zreplacement(object,
                                                  tzinfoarg);
                 if (Zreplacement == NULL)
-                    goto Done;
+                    goto Error;
             }
-            assert(Zreplacement != NULL);
-            assert(PyUnicode_Check(Zreplacement));
-            ptoappend = PyUnicode_AsUTF8AndSize(Zreplacement,
-                                                  &ntoappend);
-            if (ptoappend == NULL)
-                goto Done;
+            replacement = Zreplacement;
         }
         else if (ch == 'f') {
             /* format microseconds */
             if (freplacement == NULL) {
                 freplacement = make_freplacement(object);
                 if (freplacement == NULL)
-                    goto Done;
+                    goto Error;
             }
-            assert(freplacement != NULL);
-            assert(PyBytes_Check(freplacement));
-            ptoappend = PyBytes_AS_STRING(freplacement);
-            ntoappend = PyBytes_GET_SIZE(freplacement);
+            replacement = freplacement;
         }
         else {
             /* percent followed by something else */
-            ptoappend = pin - 2;
-            ntoappend = 2;
-        }
-
-        /* Append the ntoappend chars starting at ptoappend to
-         * the new format.
-         */
-        if (ntoappend == 0)
             continue;
-        assert(ptoappend != NULL);
-        assert(ntoappend > 0);
-        while (usednew + ntoappend > totalnew) {
-            if (totalnew > (PY_SSIZE_T_MAX >> 1)) { /* overflow */
-                PyErr_NoMemory();
-                goto Done;
-            }
-            totalnew <<= 1;
-            if (_PyBytes_Resize(&newfmt, totalnew) < 0)
-                goto Done;
-            pnew = PyBytes_AsString(newfmt) + usednew;
         }
-        memcpy(pnew, ptoappend, ntoappend);
-        pnew += ntoappend;
-        usednew += ntoappend;
-        assert(usednew <= totalnew);
+        assert(replacement != NULL);
+        assert(PyUnicode_Check(replacement));
+        if (_PyUnicodeWriter_WriteSubstring(&writer, format, start, end) < 0) {
+            goto Error;
+        }
+        start = i;
+        if (_PyUnicodeWriter_WriteStr(&writer, replacement) < 0) {
+            goto Error;
+        }
     }  /* end while() */
 
-    if (_PyBytes_Resize(&newfmt, usednew) < 0)
-        goto Done;
-    {
-        PyObject *format;
-        PyObject *strftime = _PyImport_GetModuleAttrString("time", "strftime");
-
-        if (strftime == NULL)
+    PyObject *newformat;
+    if (start == 0) {
+        _PyUnicodeWriter_Dealloc(&writer);
+        newformat = Py_NewRef(format);
+    }
+    else {
+        if (_PyUnicodeWriter_WriteSubstring(&writer, format, start, flen) < 0) {
+            goto Error;
+        }
+        newformat = _PyUnicodeWriter_Finish(&writer);
+        if (newformat == NULL) {
             goto Done;
-        format = PyUnicode_FromString(PyBytes_AS_STRING(newfmt));
-        if (format != NULL) {
-            result = PyObject_CallFunctionObjArgs(strftime,
-                                                   format, timetuple, NULL);
-            Py_DECREF(format);
         }
-        Py_DECREF(strftime);
     }
+    result = PyObject_CallFunctionObjArgs(strftime,
+                                          newformat, timetuple, NULL);
+    Py_DECREF(newformat);
+
  Done:
     Py_XDECREF(freplacement);
     Py_XDECREF(zreplacement);
     Py_XDECREF(colonzreplacement);
     Py_XDECREF(Zreplacement);
-    Py_XDECREF(newfmt);
+    Py_XDECREF(strftime);
     return result;
+
+ Error:
+    _PyUnicodeWriter_Dealloc(&writer);
+    goto Done;
 }
 
 /* ---------------------------------------------------------------------------
@@ -1890,11 +2033,13 @@ delta_to_microseconds(PyDateTime_Delta *self)
     PyObject *x3 = NULL;
     PyObject *result = NULL;
 
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
     x1 = PyLong_FromLong(GET_TD_DAYS(self));
     if (x1 == NULL)
         goto Done;
-    datetime_state *st = STATIC_STATE();
-    x2 = PyNumber_Multiply(x1, st->seconds_per_day);        /* days in seconds */
+    x2 = PyNumber_Multiply(x1, CONST_SEC_PER_DAY(st));        /* days in seconds */
     if (x2 == NULL)
         goto Done;
     Py_SETREF(x1, NULL);
@@ -1911,7 +2056,7 @@ delta_to_microseconds(PyDateTime_Delta *self)
     /* x1 = */ x2 = NULL;
 
     /* x3 has days+seconds in seconds */
-    x1 = PyNumber_Multiply(x3, st->us_per_second);          /* us */
+    x1 = PyNumber_Multiply(x3, CONST_US_PER_SECOND(st));          /* us */
     if (x1 == NULL)
         goto Done;
     Py_SETREF(x3, NULL);
@@ -1927,6 +2072,7 @@ delta_to_microseconds(PyDateTime_Delta *self)
     Py_XDECREF(x1);
     Py_XDECREF(x2);
     Py_XDECREF(x3);
+    RELEASE_CURRENT_STATE(st, current_mod);
     return result;
 }
 
@@ -1966,8 +2112,10 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
     PyObject *num = NULL;
     PyObject *result = NULL;
 
-    datetime_state *st = STATIC_STATE();
-    tuple = checked_divmod(pyus, st->us_per_second);
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
+    tuple = checked_divmod(pyus, CONST_US_PER_SECOND(st));
     if (tuple == NULL) {
         goto Done;
     }
@@ -1985,7 +2133,7 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
     num = Py_NewRef(PyTuple_GET_ITEM(tuple, 0));        /* leftover seconds */
     Py_DECREF(tuple);
 
-    tuple = checked_divmod(num, st->seconds_per_day);
+    tuple = checked_divmod(num, CONST_SEC_PER_DAY(st));
     if (tuple == NULL)
         goto Done;
     Py_DECREF(num);
@@ -2010,6 +2158,7 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
 Done:
     Py_XDECREF(tuple);
     Py_XDECREF(num);
+    RELEASE_CURRENT_STATE(st, current_mod);
     return result;
 
 BadDivmod:
@@ -2019,7 +2168,7 @@ microseconds_to_delta_ex(PyObject *pyus, PyTypeObject *type)
 }
 
 #define microseconds_to_delta(pymicros) \
-    microseconds_to_delta_ex(pymicros, &PyDateTime_DeltaType)
+    microseconds_to_delta_ex(pymicros, DELTA_TYPE(NO_STATE))
 
 static PyObject *
 multiply_int_timedelta(PyObject *intobj, PyDateTime_Delta *delta)
@@ -2547,6 +2696,9 @@ delta_new(PyTypeObject *type, PyObject *args, PyObject *kw)
 {
     PyObject *self = NULL;
 
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
     /* Argument objects. */
     PyObject *day = NULL;
     PyObject *second = NULL;
@@ -2585,29 +2737,28 @@ delta_new(PyTypeObject *type, PyObject *args, PyObject *kw)
         y = accum("microseconds", x, us, _PyLong_GetOne(), &leftover_us);
         CLEANUP;
     }
-    datetime_state *st = STATIC_STATE();
     if (ms) {
-        y = accum("milliseconds", x, ms, st->us_per_ms, &leftover_us);
+        y = accum("milliseconds", x, ms, CONST_US_PER_MS(st), &leftover_us);
         CLEANUP;
     }
     if (second) {
-        y = accum("seconds", x, second, st->us_per_second, &leftover_us);
+        y = accum("seconds", x, second, CONST_US_PER_SECOND(st), &leftover_us);
         CLEANUP;
     }
     if (minute) {
-        y = accum("minutes", x, minute, st->us_per_minute, &leftover_us);
+        y = accum("minutes", x, minute, CONST_US_PER_MINUTE(st), &leftover_us);
         CLEANUP;
     }
     if (hour) {
-        y = accum("hours", x, hour, st->us_per_hour, &leftover_us);
+        y = accum("hours", x, hour, CONST_US_PER_HOUR(st), &leftover_us);
         CLEANUP;
     }
     if (day) {
-        y = accum("days", x, day, st->us_per_day, &leftover_us);
+        y = accum("days", x, day, CONST_US_PER_DAY(st), &leftover_us);
         CLEANUP;
     }
     if (week) {
-        y = accum("weeks", x, week, st->us_per_week, &leftover_us);
+        y = accum("weeks", x, week, CONST_US_PER_WEEK(st), &leftover_us);
         CLEANUP;
     }
     if (leftover_us) {
@@ -2649,7 +2800,9 @@ delta_new(PyTypeObject *type, PyObject *args, PyObject *kw)
 
     self = microseconds_to_delta_ex(x, type);
     Py_DECREF(x);
+
 Done:
+    RELEASE_CURRENT_STATE(st, current_mod);
     return self;
 
 #undef CLEANUP
@@ -2762,9 +2915,12 @@ delta_total_seconds(PyObject *self, PyObject *Py_UNUSED(ignored))
     if (total_microseconds == NULL)
         return NULL;
 
-    datetime_state *st = STATIC_STATE();
-    total_seconds = PyNumber_TrueDivide(total_microseconds, st->us_per_second);
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
+    total_seconds = PyNumber_TrueDivide(total_microseconds, CONST_US_PER_SECOND(st));
 
+    RELEASE_CURRENT_STATE(st, current_mod);
     Py_DECREF(total_microseconds);
     return total_seconds;
 }
@@ -2885,6 +3041,25 @@ static PyTypeObject PyDateTime_DeltaType = {
     0,                                                  /* tp_free */
 };
 
+// XXX Can we make this const?
+static PyDateTime_Delta zero_delta = {
+    PyObject_HEAD_INIT(&PyDateTime_DeltaType)
+    /* Letting this be set lazily is a benign race. */
+    .hashcode = -1,
+};
+
+static PyDateTime_Delta *
+look_up_delta(int days, int seconds, int microseconds, PyTypeObject *type)
+{
+    if (days == 0 && seconds == 0 && microseconds == 0
+            && type == zero_delta.ob_base.ob_type)
+    {
+        return &zero_delta;
+    }
+    return NULL;
+}
+
+
 /*
  * PyDateTime_Date implementation.
  */
@@ -3415,17 +3590,40 @@ static PyMethodDef iso_calendar_date_methods[] = {
     {NULL, NULL},
 };
 
-static PyTypeObject PyDateTime_IsoCalendarDateType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-    .tp_name = "datetime.IsoCalendarDate",
-    .tp_basicsize = sizeof(PyDateTime_IsoCalendarDate),
-    .tp_repr = (reprfunc) iso_calendar_date_repr,
-    .tp_flags = Py_TPFLAGS_DEFAULT,
-    .tp_doc = iso_calendar_date__doc__,
-    .tp_methods = iso_calendar_date_methods,
-    .tp_getset = iso_calendar_date_getset,
-    // .tp_base = &PyTuple_Type,  // filled in PyInit__datetime
-    .tp_new = iso_calendar_date_new,
+static int
+iso_calendar_date_traverse(PyDateTime_IsoCalendarDate *self, visitproc visit,
+                           void *arg)
+{
+    Py_VISIT(Py_TYPE(self));
+    return PyTuple_Type.tp_traverse((PyObject *)self, visit, arg);
+}
+
+static void
+iso_calendar_date_dealloc(PyDateTime_IsoCalendarDate *self)
+{
+    PyTypeObject *tp = Py_TYPE(self);
+    PyTuple_Type.tp_dealloc((PyObject *)self);  // delegate GC-untrack as well
+    Py_DECREF(tp);
+}
+
+static PyType_Slot isocal_slots[] = {
+    {Py_tp_repr, iso_calendar_date_repr},
+    {Py_tp_doc, (void *)iso_calendar_date__doc__},
+    {Py_tp_methods, iso_calendar_date_methods},
+    {Py_tp_getset, iso_calendar_date_getset},
+    {Py_tp_new, iso_calendar_date_new},
+    {Py_tp_dealloc, iso_calendar_date_dealloc},
+    {Py_tp_traverse, iso_calendar_date_traverse},
+    {0, NULL},
+};
+
+static PyType_Spec isocal_spec = {
+    .name = "datetime.IsoCalendarDate",
+    .basicsize = sizeof(PyDateTime_IsoCalendarDate),
+    .flags = (Py_TPFLAGS_DEFAULT |
+              Py_TPFLAGS_HAVE_GC |
+              Py_TPFLAGS_IMMUTABLETYPE),
+    .slots = isocal_slots,
 };
 
 /*[clinic input]
@@ -3475,8 +3673,12 @@ date_isocalendar(PyDateTime_Date *self, PyObject *Py_UNUSED(ignored))
         week = 0;
     }
 
-    PyObject* v = iso_calendar_date_new_impl(&PyDateTime_IsoCalendarDateType,
-                    year, week + 1, day + 1);
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
+    PyObject *v = iso_calendar_date_new_impl(ISOCALENDAR_DATE_TYPE(st),
+                                             year, week + 1, day + 1);
+    RELEASE_CURRENT_STATE(st, current_mod);
     if (v == NULL) {
         return NULL;
     }
@@ -3946,7 +4148,7 @@ timezone_new(PyTypeObject *type, PyObject *args, PyObject *kw)
     PyObject *offset;
     PyObject *name = NULL;
     if (PyArg_ParseTupleAndKeywords(args, kw, "O!|U:timezone", timezone_kws,
-                                    &PyDateTime_DeltaType, &offset, &name))
+                                    DELTA_TYPE(NO_STATE), &offset, &name))
         return new_timezone(offset, name);
 
     return NULL;
@@ -3999,8 +4201,7 @@ timezone_repr(PyDateTime_TimeZone *self)
        to use Py_TYPE(self)->tp_name here. */
     const char *type_name = Py_TYPE(self)->tp_name;
 
-    datetime_state *st = STATIC_STATE();
-    if (((PyObject *)self) == st->utc) {
+    if ((PyObject *)self == CONST_UTC(NO_STATE)) {
         return PyUnicode_FromFormat("%s.utc", type_name);
     }
 
@@ -4022,8 +4223,7 @@ timezone_str(PyDateTime_TimeZone *self)
     if (self->name != NULL) {
         return Py_NewRef(self->name);
     }
-    datetime_state *st = STATIC_STATE();
-    if ((PyObject *)self == st->utc ||
+    if ((PyObject *)self == CONST_UTC(NO_STATE) ||
            (GET_TD_DAYS(self->offset) == 0 &&
             GET_TD_SECONDS(self->offset) == 0 &&
             GET_TD_MICROSECONDS(self->offset) == 0))
@@ -4175,6 +4375,23 @@ static PyTypeObject PyDateTime_TimeZoneType = {
     timezone_new,                     /* tp_new */
 };
 
+// XXX Can we make this const?
+static PyDateTime_TimeZone utc_timezone = {
+    PyObject_HEAD_INIT(&PyDateTime_TimeZoneType)
+    .offset = (PyObject *)&zero_delta,
+    .name = NULL,
+};
+
+static PyDateTime_TimeZone *
+look_up_timezone(PyObject *offset, PyObject *name)
+{
+    if (offset == utc_timezone.offset && name == NULL) {
+        return (PyDateTime_TimeZone *)CONST_UTC(NO_STATE);
+    }
+    return NULL;
+}
+
+
 /*
  * PyDateTime_Time implementation.
  */
@@ -4686,7 +4903,7 @@ time_fromisoformat(PyObject *cls, PyObject *tstr) {
     }
 
     PyObject *t;
-    if ( (PyTypeObject *)cls == &PyDateTime_TimeType ) {
+    if ( (PyTypeObject *)cls == TIME_TYPE(NO_STATE)) {
         t = new_time(hour, minute, second, microsecond, tzinfo, 0);
     } else {
         t = PyObject_CallFunction(cls, "iiiiO",
@@ -5259,19 +5476,19 @@ datetime_utcfromtimestamp(PyObject *cls, PyObject *args)
 static PyObject *
 datetime_strptime(PyObject *cls, PyObject *args)
 {
-    static PyObject *module = NULL;
-    PyObject *string, *format;
+    PyObject *string, *format, *result;
 
     if (!PyArg_ParseTuple(args, "UU:strptime", &string, &format))
         return NULL;
 
+    PyObject *module = PyImport_Import(&_Py_ID(_strptime));
     if (module == NULL) {
-        module = PyImport_ImportModule("_strptime");
-        if (module == NULL)
-            return NULL;
+        return NULL;
     }
-    return PyObject_CallMethodObjArgs(module, &_Py_ID(_strptime_datetime),
-                                         cls, string, format, NULL);
+    result = PyObject_CallMethodObjArgs(module, &_Py_ID(_strptime_datetime),
+                                        cls, string, format, NULL);
+    Py_DECREF(module);
+    return result;
 }
 
 /* Return new datetime from date/datetime and time arguments. */
@@ -5285,8 +5502,8 @@ datetime_combine(PyObject *cls, PyObject *args, PyObject *kw)
     PyObject *result = NULL;
 
     if (PyArg_ParseTupleAndKeywords(args, kw, "O!O!|O:combine", keywords,
-                                    &PyDateTime_DateType, &date,
-                                    &PyDateTime_TimeType, &time, &tzinfo)) {
+                                    DATE_TYPE(NO_STATE), &date,
+                                    TIME_TYPE(NO_STATE), &time, &tzinfo)) {
         if (tzinfo == NULL) {
             if (HASTZINFO(time))
                 tzinfo = ((PyDateTime_Time *)time)->tzinfo;
@@ -6170,10 +6387,14 @@ local_timezone(PyDateTime_DateTime *utc_time)
     PyObject *one_second;
     PyObject *seconds;
 
-    datetime_state *st = STATIC_STATE();
-    delta = datetime_subtract((PyObject *)utc_time, st->epoch);
+    PyObject *current_mod = NULL;
+    datetime_state *st = GET_CURRENT_STATE(current_mod);
+
+    delta = datetime_subtract((PyObject *)utc_time, CONST_EPOCH(st));
+    RELEASE_CURRENT_STATE(st, current_mod);
     if (delta == NULL)
         return NULL;
+
     one_second = new_delta(0, 1, 0, 0);
     if (one_second == NULL) {
         Py_DECREF(delta);
@@ -6283,7 +6504,6 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
     if (result == NULL)
         return NULL;
 
-    datetime_state *st = STATIC_STATE();
     /* Make sure result is aware and UTC. */
     if (!HASTZINFO(result)) {
         temp = (PyObject *)result;
@@ -6295,7 +6515,7 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
                                     DATE_GET_MINUTE(result),
                                     DATE_GET_SECOND(result),
                                     DATE_GET_MICROSECOND(result),
-                                    st->utc,
+                                    CONST_UTC(NO_STATE),
                                     DATE_GET_FOLD(result),
                                     Py_TYPE(result));
         Py_DECREF(temp);
@@ -6304,7 +6524,7 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
     }
     else {
         /* Result is already aware - just replace tzinfo. */
-        Py_SETREF(result->tzinfo, Py_NewRef(st->utc));
+        Py_SETREF(result->tzinfo, Py_NewRef(CONST_UTC(NO_STATE)));
     }
 
     /* Attach new tzinfo and let fromutc() do the rest. */
@@ -6408,9 +6628,12 @@ datetime_timestamp(PyDateTime_DateTime *self, PyObject *Py_UNUSED(ignored))
     PyObject *result;
 
     if (HASTZINFO(self) && self->tzinfo != Py_None) {
-        datetime_state *st = STATIC_STATE();
+        PyObject *current_mod = NULL;
+        datetime_state *st = GET_CURRENT_STATE(current_mod);
+
         PyObject *delta;
-        delta = datetime_subtract((PyObject *)self, st->epoch);
+        delta = datetime_subtract((PyObject *)self, CONST_EPOCH(st));
+        RELEASE_CURRENT_STATE(st, current_mod);
         if (delta == NULL)
             return NULL;
         result = delta_total_seconds(delta, NULL);
@@ -6699,11 +6922,45 @@ static PyTypeObject PyDateTime_DateTimeType = {
 };
 
 /* ---------------------------------------------------------------------------
- * Module methods and initialization.
+ * datetime C-API.
  */
 
-static PyMethodDef module_methods[] = {
-    {NULL, NULL}
+static PyTypeObject * const capi_types[] = {
+    &PyDateTime_DateType,
+    &PyDateTime_DateTimeType,
+    &PyDateTime_TimeType,
+    &PyDateTime_DeltaType,
+    &PyDateTime_TZInfoType,
+    /* Indirectly, via the utc object. */
+    &PyDateTime_TimeZoneType,
+};
+
+/* The C-API is process-global.  This violates interpreter isolation
+ * due to the objects stored here.  Thus each of those objects must
+ * be managed carefully. */
+// XXX Can we make this const?
+static PyDateTime_CAPI capi = {
+    /* The classes must be readied before used here.
+     * That will happen the first time the module is loaded.
+     * They aren't safe to be shared between interpreters,
+     * but that's okay as long as the module is single-phase init. */
+    .DateType = &PyDateTime_DateType,
+    .DateTimeType = &PyDateTime_DateTimeType,
+    .TimeType = &PyDateTime_TimeType,
+    .DeltaType = &PyDateTime_DeltaType,
+    .TZInfoType = &PyDateTime_TZInfoType,
+
+    .TimeZone_UTC = (PyObject *)&utc_timezone,
+
+    .Date_FromDate = new_date_ex,
+    .DateTime_FromDateAndTime = new_datetime_ex,
+    .Time_FromTime = new_time_ex,
+    .Delta_FromDelta = new_delta_ex,
+    .TimeZone_FromTimeZone = new_timezone,
+    .DateTime_FromTimestamp = datetime_fromtimestamp,
+    .Date_FromTimestamp = datetime_date_fromtimestamp_capi,
+    .DateTime_FromDateAndTimeAndFold = new_datetime_ex2,
+    .Time_FromTimeAndFold = new_time_ex2,
 };
 
 /* Get a new C API by calling this function.
@@ -6712,55 +6969,7 @@ static PyMethodDef module_methods[] = {
 static inline PyDateTime_CAPI *
 get_datetime_capi(void)
 {
-    PyDateTime_CAPI *capi = PyMem_Malloc(sizeof(PyDateTime_CAPI));
-    if (capi == NULL) {
-        PyErr_NoMemory();
-        return NULL;
-    }
-    capi->DateType = &PyDateTime_DateType;
-    capi->DateTimeType = &PyDateTime_DateTimeType;
-    capi->TimeType = &PyDateTime_TimeType;
-    capi->DeltaType = &PyDateTime_DeltaType;
-    capi->TZInfoType = &PyDateTime_TZInfoType;
-    capi->Date_FromDate = new_date_ex;
-    capi->DateTime_FromDateAndTime = new_datetime_ex;
-    capi->Time_FromTime = new_time_ex;
-    capi->Delta_FromDelta = new_delta_ex;
-    capi->TimeZone_FromTimeZone = new_timezone;
-    capi->DateTime_FromTimestamp = datetime_fromtimestamp;
-    capi->Date_FromTimestamp = datetime_date_fromtimestamp_capi;
-    capi->DateTime_FromDateAndTimeAndFold = new_datetime_ex2;
-    capi->Time_FromTimeAndFold = new_time_ex2;
-    // Make sure this function is called after utc has
-    // been initialized.
-    datetime_state *st = STATIC_STATE();
-    assert(st->utc != NULL);
-    capi->TimeZone_UTC = st->utc; // borrowed ref
-    return capi;
-}
-
-static void
-datetime_destructor(PyObject *op)
-{
-    void *ptr = PyCapsule_GetPointer(op, PyDateTime_CAPSULE_NAME);
-    PyMem_Free(ptr);
-}
-
-static int
-datetime_clear(PyObject *module)
-{
-    datetime_state *st = STATIC_STATE();
-
-    Py_CLEAR(st->us_per_ms);
-    Py_CLEAR(st->us_per_second);
-    Py_CLEAR(st->us_per_minute);
-    Py_CLEAR(st->us_per_hour);
-    Py_CLEAR(st->us_per_day);
-    Py_CLEAR(st->us_per_week);
-    Py_CLEAR(st->seconds_per_day);
-    Py_CLEAR(st->utc);
-    Py_CLEAR(st->epoch);
-    return 0;
+    return &capi;
 }
 
 static PyObject *
@@ -6775,9 +6984,45 @@ create_timezone_from_delta(int days, int sec, int ms, int normalize)
     return tz;
 }
 
+
+/* ---------------------------------------------------------------------------
+ * Module state lifecycle.
+ */
+
 static int
-init_state(datetime_state *st)
-{
+init_state(datetime_state *st, PyObject *module, PyObject *old_module)
+{
+    /* Each module gets its own heap types. */
+#define ADD_TYPE(FIELD, SPEC, BASE)                 \
+    do {                                            \
+        PyObject *cls = PyType_FromModuleAndSpec(   \
+                module, SPEC, (PyObject *)BASE);    \
+        if (cls == NULL) {                          \
+            return -1;                              \
+        }                                           \
+        st->FIELD = (PyTypeObject *)cls;            \
+    } while (0)
+
+    ADD_TYPE(isocalendar_date_type, &isocal_spec, &PyTuple_Type);
+#undef ADD_TYPE
+
+    if (old_module != NULL) {
+        assert(old_module != module);
+        datetime_state *st_old = get_module_state(old_module);
+        *st = (datetime_state){
+            .isocalendar_date_type = st->isocalendar_date_type,
+            .us_per_ms = Py_NewRef(st_old->us_per_ms),
+            .us_per_second = Py_NewRef(st_old->us_per_second),
+            .us_per_minute = Py_NewRef(st_old->us_per_minute),
+            .us_per_hour = Py_NewRef(st_old->us_per_hour),
+            .us_per_day = Py_NewRef(st_old->us_per_day),
+            .us_per_week = Py_NewRef(st_old->us_per_week),
+            .seconds_per_day = Py_NewRef(st_old->seconds_per_day),
+            .epoch = Py_NewRef(st_old->epoch),
+        };
+        return 0;
+    }
+
     st->us_per_ms = PyLong_FromLong(1000);
     if (st->us_per_ms == NULL) {
         return -1;
@@ -6811,51 +7056,111 @@ init_state(datetime_state *st)
         return -1;
     }
 
-    /* Init UTC timezone */
-    st->utc = create_timezone_from_delta(0, 0, 0, 0);
-    if (st->utc == NULL) {
-        return -1;
-    }
-
     /* Init Unix epoch */
-    st->epoch = new_datetime(1970, 1, 1, 0, 0, 0, 0, st->utc, 0);
+    st->epoch = new_datetime(
+            1970, 1, 1, 0, 0, 0, 0, (PyObject *)&utc_timezone, 0);
     if (st->epoch == NULL) {
         return -1;
     }
+
     return 0;
 }
 
 static int
-_datetime_exec(PyObject *module)
+traverse_state(datetime_state *st, visitproc visit, void *arg)
+{
+    /* heap types */
+    Py_VISIT(st->isocalendar_date_type);
+
+    return 0;
+}
+
+static int
+clear_state(datetime_state *st)
+{
+    Py_CLEAR(st->isocalendar_date_type);
+    Py_CLEAR(st->us_per_ms);
+    Py_CLEAR(st->us_per_second);
+    Py_CLEAR(st->us_per_minute);
+    Py_CLEAR(st->us_per_hour);
+    Py_CLEAR(st->us_per_day);
+    Py_CLEAR(st->us_per_week);
+    Py_CLEAR(st->seconds_per_day);
+    Py_CLEAR(st->epoch);
+    return 0;
+}
+
+
+static int
+init_static_types(PyInterpreterState *interp, int reloading)
 {
+    if (reloading) {
+        return 0;
+    }
+
     // `&...` is not a constant expression according to a strict reading
     // of C standards. Fill tp_base at run-time rather than statically.
     // See https://bugs.python.org/issue40777
-    PyDateTime_IsoCalendarDateType.tp_base = &PyTuple_Type;
     PyDateTime_TimeZoneType.tp_base = &PyDateTime_TZInfoType;
     PyDateTime_DateTimeType.tp_base = &PyDateTime_DateType;
 
-    PyTypeObject *types[] = {
-        &PyDateTime_DateType,
-        &PyDateTime_DateTimeType,
-        &PyDateTime_TimeType,
-        &PyDateTime_DeltaType,
-        &PyDateTime_TZInfoType,
-        &PyDateTime_TimeZoneType,
-    };
+    /* Bases classes must be initialized before subclasses,
+     * so capi_types must have the types in the appropriate order. */
+    for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) {
+        PyTypeObject *type = capi_types[i];
+        if (_PyStaticType_InitForExtension(interp, type) < 0) {
+            return -1;
+        }
+    }
 
-    for (size_t i = 0; i < Py_ARRAY_LENGTH(types); i++) {
-        if (PyModule_AddType(module, types[i]) < 0) {
+    return 0;
+}
+
+
+/* ---------------------------------------------------------------------------
+ * Module methods and initialization.
+ */
+
+static PyMethodDef module_methods[] = {
+    {NULL, NULL}
+};
+
+
+static int
+_datetime_exec(PyObject *module)
+{
+    int rc = -1;
+    datetime_state *st = get_module_state(module);
+    int reloading = 0;
+
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    PyObject *old_module = get_current_module(interp, &reloading);
+    if (PyErr_Occurred()) {
+        assert(old_module == NULL);
+        goto error;
+    }
+    /* We actually set the "current" module right before a successful return. */
+
+    if (init_static_types(interp, reloading) < 0) {
+        goto error;
+    }
+
+    for (size_t i = 0; i < Py_ARRAY_LENGTH(capi_types); i++) {
+        PyTypeObject *type = capi_types[i];
+        const char *name = _PyType_Name(type);
+        assert(name != NULL);
+        if (PyModule_AddObjectRef(module, name, (PyObject *)type) < 0) {
             goto error;
         }
     }
 
-    if (PyType_Ready(&PyDateTime_IsoCalendarDateType) < 0) {
+    if (init_state(st, module, old_module) < 0) {
         goto error;
     }
 
 #define DATETIME_ADD_MACRO(dict, c, value_expr)         \
     do {                                                \
+        assert(!PyErr_Occurred());                      \
         PyObject *value = (value_expr);                 \
         if (value == NULL) {                            \
             goto error;                                 \
@@ -6867,55 +7172,53 @@ _datetime_exec(PyObject *module)
         Py_DECREF(value);                               \
     } while(0)
 
-    /* timedelta values */
-    PyObject *d = PyDateTime_DeltaType.tp_dict;
-    DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
-    DATETIME_ADD_MACRO(d, "min", new_delta(-MAX_DELTA_DAYS, 0, 0, 0));
-    DATETIME_ADD_MACRO(d, "max",
-                       new_delta(MAX_DELTA_DAYS, 24*3600-1, 1000000-1, 0));
-
-    /* date values */
-    d = PyDateTime_DateType.tp_dict;
-    DATETIME_ADD_MACRO(d, "min", new_date(1, 1, 1));
-    DATETIME_ADD_MACRO(d, "max", new_date(MAXYEAR, 12, 31));
-    DATETIME_ADD_MACRO(d, "resolution", new_delta(1, 0, 0, 0));
-
-    /* time values */
-    d = PyDateTime_TimeType.tp_dict;
-    DATETIME_ADD_MACRO(d, "min", new_time(0, 0, 0, 0, Py_None, 0));
-    DATETIME_ADD_MACRO(d, "max", new_time(23, 59, 59, 999999, Py_None, 0));
-    DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
-
-    /* datetime values */
-    d = PyDateTime_DateTimeType.tp_dict;
-    DATETIME_ADD_MACRO(d, "min",
-                       new_datetime(1, 1, 1, 0, 0, 0, 0, Py_None, 0));
-    DATETIME_ADD_MACRO(d, "max", new_datetime(MAXYEAR, 12, 31, 23, 59, 59,
-                                              999999, Py_None, 0));
-    DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
-
-    datetime_state *st = STATIC_STATE();
-    if (init_state(st) < 0) {
-        goto error;
-    }
+    if (!reloading) {
+        /* timedelta values */
+        PyObject *d = _PyType_GetDict(&PyDateTime_DeltaType);
+        DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
+        DATETIME_ADD_MACRO(d, "min", new_delta(-MAX_DELTA_DAYS, 0, 0, 0));
+        DATETIME_ADD_MACRO(d, "max",
+                           new_delta(MAX_DELTA_DAYS, 24*3600-1, 1000000-1, 0));
+
+        /* date values */
+        d = _PyType_GetDict(&PyDateTime_DateType);
+        DATETIME_ADD_MACRO(d, "min", new_date(1, 1, 1));
+        DATETIME_ADD_MACRO(d, "max", new_date(MAXYEAR, 12, 31));
+        DATETIME_ADD_MACRO(d, "resolution", new_delta(1, 0, 0, 0));
+
+        /* time values */
+        d = _PyType_GetDict(&PyDateTime_TimeType);
+        DATETIME_ADD_MACRO(d, "min", new_time(0, 0, 0, 0, Py_None, 0));
+        DATETIME_ADD_MACRO(d, "max", new_time(23, 59, 59, 999999, Py_None, 0));
+        DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
+
+        /* datetime values */
+        d = _PyType_GetDict(&PyDateTime_DateTimeType);
+        DATETIME_ADD_MACRO(d, "min",
+                           new_datetime(1, 1, 1, 0, 0, 0, 0, Py_None, 0));
+        DATETIME_ADD_MACRO(d, "max", new_datetime(MAXYEAR, 12, 31, 23, 59, 59,
+                                                  999999, Py_None, 0));
+        DATETIME_ADD_MACRO(d, "resolution", new_delta(0, 0, 1, 0));
+
+        /* timezone values */
+        d = _PyType_GetDict(&PyDateTime_TimeZoneType);
+        if (PyDict_SetItemString(d, "utc", (PyObject *)&utc_timezone) < 0) {
+            goto error;
+        }
 
-    /* timezone values */
-    d = PyDateTime_TimeZoneType.tp_dict;
-    if (PyDict_SetItemString(d, "utc", st->utc) < 0) {
-        goto error;
-    }
+        /* bpo-37642: These attributes are rounded to the nearest minute for backwards
+        * compatibility, even though the constructor will accept a wider range of
+        * values. This may change in the future.*/
 
-    /* bpo-37642: These attributes are rounded to the nearest minute for backwards
-     * compatibility, even though the constructor will accept a wider range of
-     * values. This may change in the future.*/
+        /* -23:59 */
+        DATETIME_ADD_MACRO(d, "min", create_timezone_from_delta(-1, 60, 0, 1));
 
-    /* -23:59 */
-    PyObject *min = create_timezone_from_delta(-1, 60, 0, 1);
-    DATETIME_ADD_MACRO(d, "min", min);
+        /* +23:59 */
+        DATETIME_ADD_MACRO(
+                d, "max", create_timezone_from_delta(0, (23 * 60 + 59) * 60, 0, 0));
+    }
 
-    /* +23:59 */
-    PyObject *max = create_timezone_from_delta(0, (23 * 60 + 59) * 60, 0, 0);
-    DATETIME_ADD_MACRO(d, "max", max);
+#undef DATETIME_ADD_MACRO
 
     /* Add module level attributes */
     if (PyModule_AddIntMacro(module, MINYEAR) < 0) {
@@ -6924,7 +7227,7 @@ _datetime_exec(PyObject *module)
     if (PyModule_AddIntMacro(module, MAXYEAR) < 0) {
         goto error;
     }
-    if (PyModule_AddObjectRef(module, "UTC", st->utc) < 0) {
+    if (PyModule_AddObjectRef(module, "UTC", (PyObject *)&utc_timezone) < 0) {
         goto error;
     }
 
@@ -6933,14 +7236,9 @@ _datetime_exec(PyObject *module)
     if (capi == NULL) {
         goto error;
     }
-    PyObject *capsule = PyCapsule_New(capi, PyDateTime_CAPSULE_NAME,
-                                      datetime_destructor);
-    if (capsule == NULL) {
-        PyMem_Free(capi);
-        goto error;
-    }
+    PyObject *capsule = PyCapsule_New(capi, PyDateTime_CAPSULE_NAME, NULL);
+    // (capsule == NULL) is handled by PyModule_Add
     if (PyModule_Add(module, "datetime_CAPI", capsule) < 0) {
-        PyMem_Free(capi);
         goto error;
     }
 
@@ -6962,38 +7260,73 @@ _datetime_exec(PyObject *module)
     static_assert(DI100Y == 25 * DI4Y - 1, "DI100Y");
     assert(DI100Y == days_before_year(100+1));
 
-    return 0;
+    if (set_current_module(interp, module) < 0) {
+        goto error;
+    }
+
+    rc = 0;
+    goto finally;
 
 error:
-    datetime_clear(module);
-    return -1;
+    clear_state(st);
+
+finally:
+    Py_XDECREF(old_module);
+    return rc;
 }
-#undef DATETIME_ADD_MACRO
 
-static struct PyModuleDef datetimemodule = {
+static PyModuleDef_Slot module_slots[] = {
+    {Py_mod_exec, _datetime_exec},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {Py_mod_gil, Py_MOD_GIL_NOT_USED},
+    {0, NULL},
+};
+
+static int
+module_traverse(PyObject *mod, visitproc visit, void *arg)
+{
+    datetime_state *st = get_module_state(mod);
+    traverse_state(st, visit, arg);
+    return 0;
+}
+
+static int
+module_clear(PyObject *mod)
+{
+    datetime_state *st = get_module_state(mod);
+    clear_state(st);
+
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    clear_current_module(interp, mod);
+
+    // The runtime takes care of the static types for us.
+    // See _PyTypes_FiniExtTypes()..
+
+    return 0;
+}
+
+static void
+module_free(void *mod)
+{
+    (void)module_clear((PyObject *)mod);
+}
+
+static PyModuleDef datetimemodule = {
     .m_base = PyModuleDef_HEAD_INIT,
     .m_name = "_datetime",
     .m_doc = "Fast implementation of the datetime type.",
-    .m_size = -1,
+    .m_size = sizeof(datetime_state),
     .m_methods = module_methods,
+    .m_slots = module_slots,
+    .m_traverse = module_traverse,
+    .m_clear = module_clear,
+    .m_free = module_free,
 };
 
 PyMODINIT_FUNC
 PyInit__datetime(void)
 {
-    PyObject *mod = PyModule_Create(&datetimemodule);
-    if (mod == NULL)
-        return NULL;
-#ifdef Py_GIL_DISABLED
-    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
-#endif
-
-    if (_datetime_exec(mod) < 0) {
-        Py_DECREF(mod);
-        return NULL;
-    }
-
-    return mod;
+    return PyModuleDef_Init(&datetimemodule);
 }
 
 /* ---------------------------------------------------------------------------
diff --git a/Modules/_decimal/_decimal.c b/Modules/_decimal/_decimal.c
index 2daa24c823a542..29ae5f402a06f9 100644
--- a/Modules/_decimal/_decimal.c
+++ b/Modules/_decimal/_decimal.c
@@ -76,8 +76,9 @@ typedef struct {
 #ifndef WITH_DECIMAL_CONTEXTVAR
     /* Key for thread state dictionary */
     PyObject *tls_context_key;
-    /* Invariant: NULL or the most recently accessed thread local context */
-    struct PyDecContextObject *cached_context;
+    /* Invariant: NULL or a strong reference to the most recently accessed
+       thread local context. */
+    struct PyDecContextObject *cached_context;  /* Not borrowed */
 #else
     PyObject *current_context_var;
 #endif
@@ -1390,6 +1391,10 @@ context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
     CtxCaps(self) = 1;
     self->tstate = NULL;
 
+    if (type == state->PyDecContext_Type) {
+        PyObject_GC_Track(self);
+    }
+    assert(PyObject_GC_IsTracked((PyObject *)self));
     return (PyObject *)self;
 }
 
@@ -1415,12 +1420,6 @@ context_dealloc(PyDecContextObject *self)
 {
     PyTypeObject *tp = Py_TYPE(self);
     PyObject_GC_UnTrack(self);
-#ifndef WITH_DECIMAL_CONTEXTVAR
-    decimal_state *state = get_module_state_by_def(Py_TYPE(self));
-    if (self == state->cached_context) {
-        state->cached_context = NULL;
-    }
-#endif
     (void)context_clear(self);
     tp->tp_free(self);
     Py_DECREF(tp);
@@ -1519,7 +1518,7 @@ init_extended_context(PyObject *v)
 #ifdef EXTRA_FUNCTIONALITY
 /* Factory function for creating IEEE interchange format contexts */
 static PyObject *
-ieee_context(PyObject *dummy UNUSED, PyObject *v)
+ieee_context(PyObject *module, PyObject *v)
 {
     PyObject *context;
     mpd_ssize_t bits;
@@ -1536,7 +1535,7 @@ ieee_context(PyObject *dummy UNUSED, PyObject *v)
         goto error;
     }
 
-    decimal_state *state = get_module_state_by_def(Py_TYPE(v));
+    decimal_state *state = get_module_state(module);
     context = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
     if (context == NULL) {
         return NULL;
@@ -1697,7 +1696,8 @@ current_context_from_dict(decimal_state *modstate)
 
     /* Cache the context of the current thread, assuming that it
      * will be accessed several times before a thread switch. */
-    modstate->cached_context = (PyDecContextObject *)tl_context;
+    Py_XSETREF(modstate->cached_context,
+               (PyDecContextObject *)Py_NewRef(tl_context));
     modstate->cached_context->tstate = tstate;
 
     /* Borrowed reference with refcount==1 */
@@ -1765,7 +1765,7 @@ PyDec_SetCurrentContext(PyObject *self, PyObject *v)
         Py_INCREF(v);
     }
 
-    state->cached_context = NULL;
+    Py_CLEAR(state->cached_context);
     if (PyDict_SetItem(dict, state->tls_context_key, v) < 0) {
         Py_DECREF(v);
         return NULL;
@@ -2038,6 +2038,10 @@ PyDecType_New(PyTypeObject *type)
     MPD(dec)->alloc = _Py_DEC_MINALLOC;
     MPD(dec)->data = dec->data;
 
+    if (type == state->PyDec_Type) {
+        PyObject_GC_Track(dec);
+    }
+    assert(PyObject_GC_IsTracked((PyObject *)dec));
     return (PyObject *)dec;
 }
 #define dec_alloc(st) PyDecType_New((st)->PyDec_Type)
@@ -6114,6 +6118,16 @@ decimal_traverse(PyObject *module, visitproc visit, void *arg)
     Py_VISIT(state->Rational);
     Py_VISIT(state->SignalTuple);
 
+    if (state->signal_map != NULL) {
+        for (DecCondMap *cm = state->signal_map; cm->name != NULL; cm++) {
+            Py_VISIT(cm->ex);
+        }
+    }
+    if (state->cond_map != NULL) {
+        for (DecCondMap *cm = state->cond_map + 1; cm->name != NULL; cm++) {
+            Py_VISIT(cm->ex);
+        }
+    }
     return 0;
 }
 
@@ -6143,8 +6157,22 @@ decimal_clear(PyObject *module)
     Py_CLEAR(state->SignalTuple);
     Py_CLEAR(state->PyDecimal);
 
-    PyMem_Free(state->signal_map);
-    PyMem_Free(state->cond_map);
+    if (state->signal_map != NULL) {
+        for (DecCondMap *cm = state->signal_map; cm->name != NULL; cm++) {
+            Py_DECREF(cm->ex);
+        }
+        PyMem_Free(state->signal_map);
+        state->signal_map = NULL;
+    }
+
+    if (state->cond_map != NULL) {
+        // cond_map[0].ex has borrowed a reference from signal_map[0].ex
+        for (DecCondMap *cm = state->cond_map + 1; cm->name != NULL; cm++) {
+            Py_DECREF(cm->ex);
+        }
+        PyMem_Free(state->cond_map);
+        state->cond_map = NULL;
+    }
     return 0;
 }
 
diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index b11983d2caa2d1..ec999582d2fb9d 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -1213,12 +1213,8 @@ _elementtree_Element_extend_impl(ElementObject *self, PyTypeObject *cls,
     PyObject* seq;
     Py_ssize_t i;
 
-    seq = PySequence_Fast(elements, "");
+    seq = PySequence_Fast(elements, "'elements' must be an iterable");
     if (!seq) {
-        PyErr_Format(
-            PyExc_TypeError,
-            "expected sequence, not \"%.200s\"", Py_TYPE(elements)->tp_name
-            );
         return NULL;
     }
 
@@ -1502,7 +1498,7 @@ element_bool(PyObject* self_)
 {
     ElementObject* self = (ElementObject*) self_;
     if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "Testing an element's truth value will raise an exception "
+                     "Testing an element's truth value will always return True "
                      "in future versions.  Use specific 'len(elem)' or "
                      "'elem is not None' test instead.",
                      1) < 0) {
@@ -1918,12 +1914,8 @@ element_ass_subscr(PyObject* self_, PyObject* item, PyObject* value)
         }
 
         /* A new slice is actually being assigned */
-        seq = PySequence_Fast(value, "");
+        seq = PySequence_Fast(value, "assignment expects an iterable");
         if (!seq) {
-            PyErr_Format(
-                PyExc_TypeError,
-                "expected sequence, not \"%.200s\"", Py_TYPE(value)->tp_name
-                );
             return -1;
         }
         newlen = PySequence_Fast_GET_SIZE(seq);
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index 9dee7bf3062710..9e140a1a580832 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -197,6 +197,21 @@ partial_dealloc(partialobject *pto)
     Py_DECREF(tp);
 }
 
+static PyObject *
+partial_descr_get(PyObject *self, PyObject *obj, PyObject *type)
+{
+    if (obj == Py_None || obj == NULL) {
+        return Py_NewRef(self);
+    }
+    if (PyErr_WarnEx(PyExc_FutureWarning,
+                     "functools.partial will be a method descriptor in "
+                     "future Python versions; wrap it in staticmethod() "
+                     "if you want to preserve the old behavior", 1) < 0)
+    {
+        return NULL;
+    }
+    return Py_NewRef(self);
+}
 
 /* Merging keyword arguments using the vectorcall convention is messy, so
  * if we would need to do that, we stop using vectorcall and fall back
@@ -514,6 +529,7 @@ static PyType_Slot partial_type_slots[] = {
     {Py_tp_methods, partial_methods},
     {Py_tp_members, partial_memberlist},
     {Py_tp_getset, partial_getsetlist},
+    {Py_tp_descr_get, (descrgetfunc)partial_descr_get},
     {Py_tp_new, partial_new},
     {Py_tp_free, PyObject_GC_Del},
     {0, 0}
@@ -764,12 +780,14 @@ functools_reduce(PyObject *self, PyObject *args)
 PyDoc_STRVAR(functools_reduce_doc,
 "reduce(function, iterable[, initial], /) -> value\n\
 \n\
-Apply a function of two arguments cumulatively to the items of a sequence\n\
-or iterable, from left to right, so as to reduce the iterable to a single\n\
-value.  For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates\n\
-((((1+2)+3)+4)+5).  If initial is present, it is placed before the items\n\
-of the iterable in the calculation, and serves as a default when the\n\
-iterable is empty.");
+Apply a function of two arguments cumulatively to the items of an iterable, from left to right.\n\
+\n\
+This effectively reduces the iterable to a single value.  If initial is present,\n\
+it is placed before the items of the iterable in the calculation, and serves as\n\
+a default when the iterable is empty.\n\
+\n\
+For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5])\n\
+calculates ((((1 + 2) + 3) + 4) + 5).");
 
 /* lru_cache object **********************************************************/
 
diff --git a/Modules/_gdbmmodule.c b/Modules/_gdbmmodule.c
index df7fba67810ed0..ea4fe247987e9d 100644
--- a/Modules/_gdbmmodule.c
+++ b/Modules/_gdbmmodule.c
@@ -8,10 +8,11 @@
 #endif
 
 #include "Python.h"
+#include "pycore_pyerrors.h"        // _PyErr_SetLocaleString()
 #include "gdbm.h"
 
 #include <fcntl.h>
-#include <stdlib.h>               // free()
+#include <stdlib.h>                 // free()
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -33,6 +34,24 @@ get_gdbm_state(PyObject *module)
     return (_gdbm_state *)state;
 }
 
+/*
+ * Set the gdbm error obtained by gdbm_strerror(gdbm_errno).
+ *
+ * If no error message exists, a generic (UTF-8) error message
+ * is used instead.
+ */
+static void
+set_gdbm_error(_gdbm_state *state, const char *generic_error)
+{
+    const char *gdbm_errmsg = gdbm_strerror(gdbm_errno);
+    if (gdbm_errmsg) {
+        _PyErr_SetLocaleString(state->gdbm_error, gdbm_errmsg);
+    }
+    else {
+        PyErr_SetString(state->gdbm_error, generic_error);
+    }
+}
+
 /*[clinic input]
 module _gdbm
 class _gdbm.gdbm "gdbmobject *" "&Gdbmtype"
@@ -91,7 +110,7 @@ newgdbmobject(_gdbm_state *state, const char *file, int flags, int mode)
             PyErr_SetFromErrnoWithFilename(state->gdbm_error, file);
         }
         else {
-            PyErr_SetString(state->gdbm_error, gdbm_strerror(gdbm_errno));
+            set_gdbm_error(state, "gdbm_open() error");
         }
         Py_DECREF(dp);
         return NULL;
@@ -136,7 +155,7 @@ gdbm_length(gdbmobject *dp)
                 PyErr_SetFromErrno(state->gdbm_error);
             }
             else {
-                PyErr_SetString(state->gdbm_error, gdbm_strerror(gdbm_errno));
+                set_gdbm_error(state, "gdbm_count() error");
             }
             return -1;
         }
@@ -286,7 +305,7 @@ gdbm_ass_sub(gdbmobject *dp, PyObject *v, PyObject *w)
                 PyErr_SetObject(PyExc_KeyError, v);
             }
             else {
-                PyErr_SetString(state->gdbm_error, gdbm_strerror(gdbm_errno));
+                set_gdbm_error(state, "gdbm_delete() error");
             }
             return -1;
         }
@@ -297,11 +316,12 @@ gdbm_ass_sub(gdbmobject *dp, PyObject *v, PyObject *w)
         }
         errno = 0;
         if (gdbm_store(dp->di_dbm, krec, drec, GDBM_REPLACE) < 0) {
-            if (errno != 0)
+            if (errno != 0) {
                 PyErr_SetFromErrno(state->gdbm_error);
-            else
-                PyErr_SetString(state->gdbm_error,
-                                gdbm_strerror(gdbm_errno));
+            }
+            else {
+                set_gdbm_error(state, "gdbm_store() error");
+            }
             return -1;
         }
     }
@@ -534,10 +554,12 @@ _gdbm_gdbm_reorganize_impl(gdbmobject *self, PyTypeObject *cls)
     check_gdbmobject_open(self, state->gdbm_error);
     errno = 0;
     if (gdbm_reorganize(self->di_dbm) < 0) {
-        if (errno != 0)
+        if (errno != 0) {
             PyErr_SetFromErrno(state->gdbm_error);
-        else
-            PyErr_SetString(state->gdbm_error, gdbm_strerror(gdbm_errno));
+        }
+        else {
+            set_gdbm_error(state, "gdbm_reorganize() error");
+        }
         return NULL;
     }
     Py_RETURN_NONE;
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index 14d9c186151232..d2e7630c22e7e9 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -320,6 +320,7 @@ _setException(PyObject *exc, const char* altmsg, ...)
     va_end(vargs);
     ERR_clear_error();
 
+    /* ERR_ERROR_STRING(3) ensures that the messages below are ASCII */
     lib = ERR_lib_error_string(errcode);
     func = ERR_func_error_string(errcode);
     reason = ERR_reason_error_string(errcode);
diff --git a/Modules/_interpchannelsmodule.c b/Modules/_interpchannelsmodule.c
index ff8dacf5bd1ad0..5dc032b46cac9a 100644
--- a/Modules/_interpchannelsmodule.c
+++ b/Modules/_interpchannelsmodule.c
@@ -18,7 +18,9 @@
 #endif
 
 #define REGISTERS_HEAP_TYPES
+#define HAS_UNBOUND_ITEMS
 #include "_interpreters_common.h"
+#undef HAS_UNBOUND_ITEMS
 #undef REGISTERS_HEAP_TYPES
 
 
@@ -26,6 +28,7 @@
 This module has the following process-global state:
 
 _globals (static struct globals):
+    mutex (PyMutex)
     module_count (int)
     channels (struct _channels):
         numopen (int64_t)
@@ -511,8 +514,14 @@ _waiting_finish_releasing(_waiting_t *waiting)
 struct _channelitem;
 
 typedef struct _channelitem {
+    /* The interpreter that added the item to the queue.
+       The actual bound interpid is found in item->data.
+       This is necessary because item->data might be NULL,
+       meaning the interpreter has been destroyed. */
+    int64_t interpid;
     _PyCrossInterpreterData *data;
     _waiting_t *waiting;
+    int unboundop;
     struct _channelitem *next;
 } _channelitem;
 
@@ -524,11 +533,22 @@ _channelitem_ID(_channelitem *item)
 
 static void
 _channelitem_init(_channelitem *item,
-                  _PyCrossInterpreterData *data, _waiting_t *waiting)
+                  int64_t interpid, _PyCrossInterpreterData *data,
+                  _waiting_t *waiting, int unboundop)
 {
+    if (interpid < 0) {
+        interpid = _get_interpid(data);
+    }
+    else {
+        assert(data == NULL
+               || _PyCrossInterpreterData_INTERPID(data) < 0
+               || interpid == _PyCrossInterpreterData_INTERPID(data));
+    }
     *item = (_channelitem){
+        .interpid = interpid,
         .data = data,
         .waiting = waiting,
+        .unboundop = unboundop,
     };
     if (waiting != NULL) {
         waiting->itemid = _channelitem_ID(item);
@@ -536,17 +556,15 @@ _channelitem_init(_channelitem *item,
 }
 
 static void
-_channelitem_clear(_channelitem *item)
+_channelitem_clear_data(_channelitem *item, int removed)
 {
-    item->next = NULL;
-
     if (item->data != NULL) {
         // It was allocated in channel_send().
         (void)_release_xid_data(item->data, XID_IGNORE_EXC & XID_FREE);
         item->data = NULL;
     }
 
-    if (item->waiting != NULL) {
+    if (item->waiting != NULL && removed) {
         if (item->waiting->status == WAITING_ACQUIRED) {
             _waiting_release(item->waiting, 0);
         }
@@ -554,15 +572,23 @@ _channelitem_clear(_channelitem *item)
     }
 }
 
+static void
+_channelitem_clear(_channelitem *item)
+{
+    item->next = NULL;
+    _channelitem_clear_data(item, 1);
+}
+
 static _channelitem *
-_channelitem_new(_PyCrossInterpreterData *data, _waiting_t *waiting)
+_channelitem_new(int64_t interpid, _PyCrossInterpreterData *data,
+                 _waiting_t *waiting, int unboundop)
 {
     _channelitem *item = GLOBAL_MALLOC(_channelitem);
     if (item == NULL) {
         PyErr_NoMemory();
         return NULL;
     }
-    _channelitem_init(item, data, waiting);
+    _channelitem_init(item, interpid, data, waiting, unboundop);
     return item;
 }
 
@@ -585,17 +611,48 @@ _channelitem_free_all(_channelitem *item)
 
 static void
 _channelitem_popped(_channelitem *item,
-                    _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
+                    _PyCrossInterpreterData **p_data, _waiting_t **p_waiting,
+                    int *p_unboundop)
 {
     assert(item->waiting == NULL || item->waiting->status == WAITING_ACQUIRED);
     *p_data = item->data;
     *p_waiting = item->waiting;
+    *p_unboundop = item->unboundop;
     // We clear them here, so they won't be released in _channelitem_clear().
     item->data = NULL;
     item->waiting = NULL;
     _channelitem_free(item);
 }
 
+static int
+_channelitem_clear_interpreter(_channelitem *item)
+{
+    assert(item->interpid >= 0);
+    if (item->data == NULL) {
+        // Its interpreter was already cleared (or it was never bound).
+        // For UNBOUND_REMOVE it should have been freed at that time.
+        assert(item->unboundop != UNBOUND_REMOVE);
+        return 0;
+    }
+    assert(_PyCrossInterpreterData_INTERPID(item->data) == item->interpid);
+
+    switch (item->unboundop) {
+    case UNBOUND_REMOVE:
+        // The caller must free/clear it.
+        return 1;
+    case UNBOUND_ERROR:
+    case UNBOUND_REPLACE:
+        // We won't need the cross-interpreter data later
+        // so we completely throw it away.
+        _channelitem_clear_data(item, 0);
+        return 0;
+    default:
+        Py_FatalError("not reachable");
+        return -1;
+    }
+}
+
+
 typedef struct _channelqueue {
     int64_t count;
     _channelitem *first;
@@ -634,9 +691,10 @@ _channelqueue_free(_channelqueue *queue)
 
 static int
 _channelqueue_put(_channelqueue *queue,
-                  _PyCrossInterpreterData *data, _waiting_t *waiting)
+                  int64_t interpid, _PyCrossInterpreterData *data,
+                  _waiting_t *waiting, int unboundop)
 {
-    _channelitem *item = _channelitem_new(data, waiting);
+    _channelitem *item = _channelitem_new(interpid, data, waiting, unboundop);
     if (item == NULL) {
         return -1;
     }
@@ -659,7 +717,8 @@ _channelqueue_put(_channelqueue *queue,
 
 static int
 _channelqueue_get(_channelqueue *queue,
-                  _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
+                  _PyCrossInterpreterData **p_data, _waiting_t **p_waiting,
+                  int *p_unboundop)
 {
     _channelitem *item = queue->first;
     if (item == NULL) {
@@ -671,7 +730,7 @@ _channelqueue_get(_channelqueue *queue,
     }
     queue->count -= 1;
 
-    _channelitem_popped(item, p_data, p_waiting);
+    _channelitem_popped(item, p_data, p_waiting, p_unboundop);
     return 0;
 }
 
@@ -737,7 +796,8 @@ _channelqueue_remove(_channelqueue *queue, _channelitem_id_t itemid,
     }
     queue->count -= 1;
 
-    _channelitem_popped(item, p_data, p_waiting);
+    int unboundop;
+    _channelitem_popped(item, p_data, p_waiting, &unboundop);
 }
 
 static void
@@ -748,14 +808,17 @@ _channelqueue_clear_interpreter(_channelqueue *queue, int64_t interpid)
     while (next != NULL) {
         _channelitem *item = next;
         next = item->next;
-        if (_PyCrossInterpreterData_INTERPID(item->data) == interpid) {
+        int remove = (item->interpid == interpid)
+            ? _channelitem_clear_interpreter(item)
+            : 0;
+        if (remove) {
+            _channelitem_free(item);
             if (prev == NULL) {
-                queue->first = item->next;
+                queue->first = next;
             }
             else {
-                prev->next = item->next;
+                prev->next = next;
             }
-            _channelitem_free(item);
             queue->count -= 1;
         }
         else {
@@ -1018,12 +1081,15 @@ typedef struct _channel {
     PyThread_type_lock mutex;
     _channelqueue *queue;
     _channelends *ends;
+    struct {
+        int unboundop;
+    } defaults;
     int open;
     struct _channel_closing *closing;
 } _channel_state;
 
 static _channel_state *
-_channel_new(PyThread_type_lock mutex)
+_channel_new(PyThread_type_lock mutex, int unboundop)
 {
     _channel_state *chan = GLOBAL_MALLOC(_channel_state);
     if (chan == NULL) {
@@ -1041,6 +1107,7 @@ _channel_new(PyThread_type_lock mutex)
         GLOBAL_FREE(chan);
         return NULL;
     }
+    chan->defaults.unboundop = unboundop;
     chan->open = 1;
     chan->closing = NULL;
     return chan;
@@ -1061,7 +1128,8 @@ _channel_free(_channel_state *chan)
 
 static int
 _channel_add(_channel_state *chan, int64_t interpid,
-             _PyCrossInterpreterData *data, _waiting_t *waiting)
+             _PyCrossInterpreterData *data, _waiting_t *waiting,
+             int unboundop)
 {
     int res = -1;
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -1075,7 +1143,7 @@ _channel_add(_channel_state *chan, int64_t interpid,
         goto done;
     }
 
-    if (_channelqueue_put(chan->queue, data, waiting) != 0) {
+    if (_channelqueue_put(chan->queue, interpid, data, waiting, unboundop) != 0) {
         goto done;
     }
     // Any errors past this point must cause a _waiting_release() call.
@@ -1088,7 +1156,8 @@ _channel_add(_channel_state *chan, int64_t interpid,
 
 static int
 _channel_next(_channel_state *chan, int64_t interpid,
-              _PyCrossInterpreterData **p_data, _waiting_t **p_waiting)
+              _PyCrossInterpreterData **p_data, _waiting_t **p_waiting,
+              int *p_unboundop)
 {
     int err = 0;
     PyThread_acquire_lock(chan->mutex, WAIT_LOCK);
@@ -1102,11 +1171,15 @@ _channel_next(_channel_state *chan, int64_t interpid,
         goto done;
     }
 
-    int empty = _channelqueue_get(chan->queue, p_data, p_waiting);
-    assert(empty == 0 || empty == ERR_CHANNEL_EMPTY);
+    int empty = _channelqueue_get(chan->queue, p_data, p_waiting, p_unboundop);
     assert(!PyErr_Occurred());
-    if (empty && chan->closing != NULL) {
-        chan->open = 0;
+    if (empty) {
+        assert(empty == ERR_CHANNEL_EMPTY);
+        if (chan->closing != NULL) {
+            chan->open = 0;
+        }
+        err = ERR_CHANNEL_EMPTY;
+        goto done;
     }
 
 done:
@@ -1277,21 +1350,29 @@ typedef struct _channels {
 static void
 _channels_init(_channels *channels, PyThread_type_lock mutex)
 {
-    channels->mutex = mutex;
-    channels->head = NULL;
-    channels->numopen = 0;
-    channels->next_id = 0;
+    assert(mutex != NULL);
+    assert(channels->mutex == NULL);
+    *channels = (_channels){
+        .mutex = mutex,
+        .head = NULL,
+        .numopen = 0,
+        .next_id = 0,
+    };
 }
 
 static void
-_channels_fini(_channels *channels)
+_channels_fini(_channels *channels, PyThread_type_lock *p_mutex)
 {
+    PyThread_type_lock mutex = channels->mutex;
+    assert(mutex != NULL);
+
+    PyThread_acquire_lock(mutex, WAIT_LOCK);
     assert(channels->numopen == 0);
     assert(channels->head == NULL);
-    if (channels->mutex != NULL) {
-        PyThread_free_lock(channels->mutex);
-        channels->mutex = NULL;
-    }
+    *channels = (_channels){0};
+    PyThread_release_lock(mutex);
+
+    *p_mutex = mutex;
 }
 
 static int64_t
@@ -1528,18 +1609,27 @@ _channels_release_cid_object(_channels *channels, int64_t cid)
     PyThread_release_lock(channels->mutex);
 }
 
-static int64_t *
+struct channel_id_and_info {
+    int64_t id;
+    int unboundop;
+};
+
+static struct channel_id_and_info *
 _channels_list_all(_channels *channels, int64_t *count)
 {
-    int64_t *cids = NULL;
+    struct channel_id_and_info *cids = NULL;
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
-    int64_t *ids = PyMem_NEW(int64_t, (Py_ssize_t)(channels->numopen));
+    struct channel_id_and_info *ids =
+        PyMem_NEW(struct channel_id_and_info, (Py_ssize_t)(channels->numopen));
     if (ids == NULL) {
         goto done;
     }
     _channelref *ref = channels->head;
     for (int64_t i=0; ref != NULL; ref = ref->next, i++) {
-        ids[i] = ref->cid;
+        ids[i] = (struct channel_id_and_info){
+            .id = ref->cid,
+            .unboundop = ref->chan->defaults.unboundop,
+        };
     }
     *count = channels->numopen;
 
@@ -1624,13 +1714,13 @@ _channel_finish_closing(_channel_state *chan) {
 
 // Create a new channel.
 static int64_t
-channel_create(_channels *channels)
+channel_create(_channels *channels, int unboundop)
 {
     PyThread_type_lock mutex = PyThread_allocate_lock();
     if (mutex == NULL) {
         return ERR_CHANNEL_MUTEX_INIT;
     }
-    _channel_state *chan = _channel_new(mutex);
+    _channel_state *chan = _channel_new(mutex, unboundop);
     if (chan == NULL) {
         PyThread_free_lock(mutex);
         return -1;
@@ -1662,7 +1752,7 @@ channel_destroy(_channels *channels, int64_t cid)
 // Optionally request to be notified when it is received.
 static int
 channel_send(_channels *channels, int64_t cid, PyObject *obj,
-             _waiting_t *waiting)
+             _waiting_t *waiting, int unboundop)
 {
     PyInterpreterState *interp = _get_current_interp();
     if (interp == NULL) {
@@ -1698,7 +1788,7 @@ channel_send(_channels *channels, int64_t cid, PyObject *obj,
     }
 
     // Add the data to the channel.
-    int res = _channel_add(chan, interpid, data, waiting);
+    int res = _channel_add(chan, interpid, data, waiting, unboundop);
     PyThread_release_lock(mutex);
     if (res != 0) {
         // We may chain an exception here:
@@ -1735,7 +1825,7 @@ channel_clear_sent(_channels *channels, int64_t cid, _waiting_t *waiting)
 // Like channel_send(), but strictly wait for the object to be received.
 static int
 channel_send_wait(_channels *channels, int64_t cid, PyObject *obj,
-                   PY_TIMEOUT_T timeout)
+                  int unboundop, PY_TIMEOUT_T timeout)
 {
     // We use a stack variable here, so we must ensure that &waiting
     // is not held by any channel item at the point this function exits.
@@ -1746,7 +1836,7 @@ channel_send_wait(_channels *channels, int64_t cid, PyObject *obj,
     }
 
     /* Queue up the object. */
-    int res = channel_send(channels, cid, obj, &waiting);
+    int res = channel_send(channels, cid, obj, &waiting, unboundop);
     if (res < 0) {
         assert(waiting.status == WAITING_NO_STATUS);
         goto finally;
@@ -1788,7 +1878,7 @@ channel_send_wait(_channels *channels, int64_t cid, PyObject *obj,
 // The current interpreter gets associated with the recv end of the channel.
 // XXX Support a "wait" mutex?
 static int
-channel_recv(_channels *channels, int64_t cid, PyObject **res)
+channel_recv(_channels *channels, int64_t cid, PyObject **res, int *p_unboundop)
 {
     int err;
     *res = NULL;
@@ -1816,13 +1906,15 @@ channel_recv(_channels *channels, int64_t cid, PyObject **res)
     // Pop off the next item from the channel.
     _PyCrossInterpreterData *data = NULL;
     _waiting_t *waiting = NULL;
-    err = _channel_next(chan, interpid, &data, &waiting);
+    err = _channel_next(chan, interpid, &data, &waiting, p_unboundop);
     PyThread_release_lock(mutex);
     if (err != 0) {
         return err;
     }
     else if (data == NULL) {
+        // The item was unbound.
         assert(!PyErr_Occurred());
+        *res = NULL;
         return 0;
     }
 
@@ -1915,6 +2007,23 @@ channel_is_associated(_channels *channels, int64_t cid, int64_t interpid,
     return (end != NULL && end->open);
 }
 
+static int
+_channel_get_count(_channels *channels, int64_t cid, Py_ssize_t *p_count)
+{
+    PyThread_type_lock mutex = NULL;
+    _channel_state *chan = NULL;
+    int err = _channels_lookup(channels, cid, &mutex, &chan);
+    if (err != 0) {
+        return err;
+    }
+    assert(chan != NULL);
+    int64_t count = chan->queue->count;
+    PyThread_release_lock(mutex);
+
+    *p_count = (Py_ssize_t)count;
+    return 0;
+}
+
 
 /* channel info */
 
@@ -1938,7 +2047,7 @@ struct channel_info {
             int recv;
         } cur;
     } status;
-    Py_ssize_t count;
+    int64_t count;
 };
 
 static int
@@ -1952,7 +2061,7 @@ _channel_get_info(_channels *channels, int64_t cid, struct channel_info *info)
     if (interp == NULL) {
         return -1;
     }
-    Py_ssize_t interpid = PyInterpreterState_GetID(interp);
+    int64_t interpid = PyInterpreterState_GetID(interp);
 
     // Hold the global lock until we're done.
     PyThread_acquire_lock(channels->mutex, WAIT_LOCK);
@@ -2615,10 +2724,10 @@ _get_current_channelend_type(int end)
     }
     if (cls == NULL) {
         // Force the module to be loaded, to register the type.
-        PyObject *highlevel = PyImport_ImportModule("interpreters.channel");
+        PyObject *highlevel = PyImport_ImportModule("interpreters.channels");
         if (highlevel == NULL) {
             PyErr_Clear();
-            highlevel = PyImport_ImportModule("test.support.interpreters.channel");
+            highlevel = PyImport_ImportModule("test.support.interpreters.channels");
             if (highlevel == NULL) {
                 return NULL;
             }
@@ -2712,6 +2821,7 @@ set_channelend_types(PyObject *mod, PyTypeObject *send, PyTypeObject *recv)
    the data that we need to share between interpreters, so it cannot
    hold PyObject values. */
 static struct globals {
+    PyMutex mutex;
     int module_count;
     _channels channels;
 } _globals = {0};
@@ -2719,32 +2829,36 @@ static struct globals {
 static int
 _globals_init(void)
 {
-    // XXX This isn't thread-safe.
+    PyMutex_Lock(&_globals.mutex);
+    assert(_globals.module_count >= 0);
     _globals.module_count++;
-    if (_globals.module_count > 1) {
-        // Already initialized.
-        return 0;
-    }
-
-    assert(_globals.channels.mutex == NULL);
-    PyThread_type_lock mutex = PyThread_allocate_lock();
-    if (mutex == NULL) {
-        return ERR_CHANNELS_MUTEX_INIT;
+    if (_globals.module_count == 1) {
+        // Called for the first time.
+        PyThread_type_lock mutex = PyThread_allocate_lock();
+        if (mutex == NULL) {
+            _globals.module_count--;
+            PyMutex_Unlock(&_globals.mutex);
+            return ERR_CHANNELS_MUTEX_INIT;
+        }
+        _channels_init(&_globals.channels, mutex);
     }
-    _channels_init(&_globals.channels, mutex);
+    PyMutex_Unlock(&_globals.mutex);
     return 0;
 }
 
 static void
 _globals_fini(void)
 {
-    // XXX This isn't thread-safe.
+    PyMutex_Lock(&_globals.mutex);
+    assert(_globals.module_count > 0);
     _globals.module_count--;
-    if (_globals.module_count > 0) {
-        return;
+    if (_globals.module_count == 0) {
+        PyThread_type_lock mutex;
+        _channels_fini(&_globals.channels, &mutex);
+        assert(mutex != NULL);
+        PyThread_free_lock(mutex);
     }
-
-    _channels_fini(&_globals.channels);
+    PyMutex_Unlock(&_globals.mutex);
 }
 
 static _channels *
@@ -2767,9 +2881,22 @@ clear_interpreter(void *data)
 
 
 static PyObject *
-channelsmod_create(PyObject *self, PyObject *Py_UNUSED(ignored))
+channelsmod_create(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    int64_t cid = channel_create(&_globals.channels);
+    static char *kwlist[] = {"unboundop", NULL};
+    int unboundop;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "i:create", kwlist,
+                                     &unboundop))
+    {
+        return NULL;
+    }
+    if (!check_unbound(unboundop)) {
+        PyErr_Format(PyExc_ValueError,
+                     "unsupported unboundop %d", unboundop);
+        return NULL;
+    }
+
+    int64_t cid = channel_create(&_globals.channels, unboundop);
     if (cid < 0) {
         (void)handle_channel_error(-1, self, cid);
         return NULL;
@@ -2796,7 +2923,7 @@ channelsmod_create(PyObject *self, PyObject *Py_UNUSED(ignored))
 }
 
 PyDoc_STRVAR(channelsmod_create_doc,
-"channel_create() -> cid\n\
+"channel_create(unboundop) -> cid\n\
 \n\
 Create a new cross-interpreter channel and return a unique generated ID.");
 
@@ -2831,7 +2958,8 @@ static PyObject *
 channelsmod_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     int64_t count = 0;
-    int64_t *cids = _channels_list_all(&_globals.channels, &count);
+    struct channel_id_and_info *cids =
+        _channels_list_all(&_globals.channels, &count);
     if (cids == NULL) {
         if (count == 0) {
             return PyList_New(0);
@@ -2848,19 +2976,26 @@ channelsmod_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
         ids = NULL;
         goto finally;
     }
-    int64_t *cur = cids;
+    struct channel_id_and_info *cur = cids;
     for (int64_t i=0; i < count; cur++, i++) {
         PyObject *cidobj = NULL;
-        int err = newchannelid(state->ChannelIDType, *cur, 0,
+        int err = newchannelid(state->ChannelIDType, cur->id, 0,
                                &_globals.channels, 0, 0,
                                (channelid **)&cidobj);
-        if (handle_channel_error(err, self, *cur)) {
+        if (handle_channel_error(err, self, cur->id)) {
             assert(cidobj == NULL);
             Py_SETREF(ids, NULL);
             break;
         }
         assert(cidobj != NULL);
-        PyList_SET_ITEM(ids, (Py_ssize_t)i, cidobj);
+
+        PyObject *item = Py_BuildValue("Oi", cidobj, cur->unboundop);
+        Py_DECREF(cidobj);
+        if (item == NULL) {
+            Py_SETREF(ids, NULL);
+            break;
+        }
+        PyList_SET_ITEM(ids, (Py_ssize_t)i, item);
     }
 
 finally:
@@ -2942,16 +3077,24 @@ receive end.");
 static PyObject *
 channelsmod_send(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"cid", "obj", "blocking", "timeout", NULL};
+    static char *kwlist[] = {"cid", "obj", "unboundop", "blocking", "timeout",
+                             NULL};
     struct channel_id_converter_data cid_data = {
         .module = self,
     };
     PyObject *obj;
+    int unboundop = UNBOUND_REPLACE;
     int blocking = 1;
     PyObject *timeout_obj = NULL;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&O|$pO:channel_send", kwlist,
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&O|i$pO:channel_send", kwlist,
                                      channel_id_converter, &cid_data, &obj,
-                                     &blocking, &timeout_obj)) {
+                                     &unboundop, &blocking, &timeout_obj))
+    {
+        return NULL;
+    }
+    if (!check_unbound(unboundop)) {
+        PyErr_Format(PyExc_ValueError,
+                     "unsupported unboundop %d", unboundop);
         return NULL;
     }
 
@@ -2964,10 +3107,10 @@ channelsmod_send(PyObject *self, PyObject *args, PyObject *kwds)
     /* Queue up the object. */
     int err = 0;
     if (blocking) {
-        err = channel_send_wait(&_globals.channels, cid, obj, timeout);
+        err = channel_send_wait(&_globals.channels, cid, obj, unboundop, timeout);
     }
     else {
-        err = channel_send(&_globals.channels, cid, obj, NULL);
+        err = channel_send(&_globals.channels, cid, obj, NULL, unboundop);
     }
     if (handle_channel_error(err, self, cid)) {
         return NULL;
@@ -2977,7 +3120,7 @@ channelsmod_send(PyObject *self, PyObject *args, PyObject *kwds)
 }
 
 PyDoc_STRVAR(channelsmod_send_doc,
-"channel_send(cid, obj, blocking=True)\n\
+"channel_send(cid, obj, *, blocking=True, timeout=None)\n\
 \n\
 Add the object's data to the channel's queue.\n\
 By default this waits for the object to be received.");
@@ -2985,17 +3128,24 @@ By default this waits for the object to be received.");
 static PyObject *
 channelsmod_send_buffer(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"cid", "obj", "blocking", "timeout", NULL};
+    static char *kwlist[] = {"cid", "obj", "unboundop", "blocking", "timeout",
+                             NULL};
     struct channel_id_converter_data cid_data = {
         .module = self,
     };
     PyObject *obj;
+    int unboundop = UNBOUND_REPLACE;
     int blocking = 1;
     PyObject *timeout_obj = NULL;
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
-                                     "O&O|$pO:channel_send_buffer", kwlist,
+                                     "O&O|i$pO:channel_send_buffer", kwlist,
                                      channel_id_converter, &cid_data, &obj,
-                                     &blocking, &timeout_obj)) {
+                                     &unboundop, &blocking, &timeout_obj)) {
+        return NULL;
+    }
+    if (!check_unbound(unboundop)) {
+        PyErr_Format(PyExc_ValueError,
+                     "unsupported unboundop %d", unboundop);
         return NULL;
     }
 
@@ -3013,10 +3163,11 @@ channelsmod_send_buffer(PyObject *self, PyObject *args, PyObject *kwds)
     /* Queue up the object. */
     int err = 0;
     if (blocking) {
-        err = channel_send_wait(&_globals.channels, cid, tempobj, timeout);
+        err = channel_send_wait(
+                &_globals.channels, cid, tempobj, unboundop, timeout);
     }
     else {
-        err = channel_send(&_globals.channels, cid, tempobj, NULL);
+        err = channel_send(&_globals.channels, cid, tempobj, NULL, unboundop);
     }
     Py_DECREF(tempobj);
     if (handle_channel_error(err, self, cid)) {
@@ -3027,7 +3178,7 @@ channelsmod_send_buffer(PyObject *self, PyObject *args, PyObject *kwds)
 }
 
 PyDoc_STRVAR(channelsmod_send_buffer_doc,
-"channel_send_buffer(cid, obj, blocking=True)\n\
+"channel_send_buffer(cid, obj, *, blocking=True, timeout=None)\n\
 \n\
 Add the object's buffer to the channel's queue.\n\
 By default this waits for the object to be received.");
@@ -3048,25 +3199,28 @@ channelsmod_recv(PyObject *self, PyObject *args, PyObject *kwds)
     cid = cid_data.cid;
 
     PyObject *obj = NULL;
-    int err = channel_recv(&_globals.channels, cid, &obj);
-    if (handle_channel_error(err, self, cid)) {
-        return NULL;
-    }
-    Py_XINCREF(dflt);
-    if (obj == NULL) {
+    int unboundop = 0;
+    int err = channel_recv(&_globals.channels, cid, &obj, &unboundop);
+    if (err == ERR_CHANNEL_EMPTY && dflt != NULL) {
         // Use the default.
-        if (dflt == NULL) {
-            (void)handle_channel_error(ERR_CHANNEL_EMPTY, self, cid);
-            return NULL;
-        }
         obj = Py_NewRef(dflt);
+        err = 0;
     }
-    Py_XDECREF(dflt);
-    return obj;
+    else if (handle_channel_error(err, self, cid)) {
+        return NULL;
+    }
+    else if (obj == NULL) {
+        // The item was unbound.
+        return Py_BuildValue("Oi", Py_None, unboundop);
+    }
+
+    PyObject *res = Py_BuildValue("OO", obj, Py_None);
+    Py_DECREF(obj);
+    return res;
 }
 
 PyDoc_STRVAR(channelsmod_recv_doc,
-"channel_recv(cid, [default]) -> obj\n\
+"channel_recv(cid, [default]) -> (obj, unboundop)\n\
 \n\
 Return a new object from the data at the front of the channel's queue.\n\
 \n\
@@ -3167,6 +3321,34 @@ Close the channel for the current interpreter.  'send' and 'recv'\n\
 (bool) may be used to indicate the ends to close.  By default both\n\
 ends are closed.  Closing an already closed end is a noop.");
 
+static PyObject *
+channelsmod_get_count(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"cid", NULL};
+    struct channel_id_converter_data cid_data = {
+        .module = self,
+    };
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "O&:get_count", kwlist,
+                                     channel_id_converter, &cid_data)) {
+        return NULL;
+    }
+    int64_t cid = cid_data.cid;
+
+    Py_ssize_t count = -1;
+    int err = _channel_get_count(&_globals.channels, cid, &count);
+    if (handle_channel_error(err, self, cid)) {
+        return NULL;
+    }
+    assert(count >= 0);
+    return PyLong_FromSsize_t(count);
+}
+
+PyDoc_STRVAR(channelsmod_get_count_doc,
+"get_count(cid)\n\
+\n\
+Return the number of items in the channel.");
+
 static PyObject *
 channelsmod_get_info(PyObject *self, PyObject *args, PyObject *kwds)
 {
@@ -3194,6 +3376,38 @@ PyDoc_STRVAR(channelsmod_get_info_doc,
 \n\
 Return details about the channel.");
 
+static PyObject *
+channelsmod_get_channel_defaults(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    static char *kwlist[] = {"cid", NULL};
+    struct channel_id_converter_data cid_data = {
+        .module = self,
+    };
+    if (!PyArg_ParseTupleAndKeywords(args, kwds,
+                                     "O&:get_channel_defaults", kwlist,
+                                     channel_id_converter, &cid_data)) {
+        return NULL;
+    }
+    int64_t cid = cid_data.cid;
+
+    PyThread_type_lock mutex = NULL;
+    _channel_state *channel = NULL;
+    int err = _channels_lookup(&_globals.channels, cid, &mutex, &channel);
+    if (handle_channel_error(err, self, cid)) {
+        return NULL;
+    }
+    int unboundop = channel->defaults.unboundop;
+    PyThread_release_lock(mutex);
+
+    PyObject *defaults = Py_BuildValue("i", unboundop);
+    return defaults;
+}
+
+PyDoc_STRVAR(channelsmod_get_channel_defaults_doc,
+"get_channel_defaults(cid)\n\
+\n\
+Return the channel's default values, set when it was created.");
+
 static PyObject *
 channelsmod__channel_id(PyObject *self, PyObject *args, PyObject *kwds)
 {
@@ -3240,8 +3454,8 @@ channelsmod__register_end_types(PyObject *self, PyObject *args, PyObject *kwds)
 }
 
 static PyMethodDef module_functions[] = {
-    {"create",                     channelsmod_create,
-     METH_NOARGS,                  channelsmod_create_doc},
+    {"create",                     _PyCFunction_CAST(channelsmod_create),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_create_doc},
     {"destroy",                    _PyCFunction_CAST(channelsmod_destroy),
      METH_VARARGS | METH_KEYWORDS, channelsmod_destroy_doc},
     {"list_all",                   channelsmod_list_all,
@@ -3258,8 +3472,12 @@ static PyMethodDef module_functions[] = {
      METH_VARARGS | METH_KEYWORDS, channelsmod_close_doc},
     {"release",                    _PyCFunction_CAST(channelsmod_release),
      METH_VARARGS | METH_KEYWORDS, channelsmod_release_doc},
+    {"get_count",                   _PyCFunction_CAST(channelsmod_get_count),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_get_count_doc},
     {"get_info",                   _PyCFunction_CAST(channelsmod_get_info),
      METH_VARARGS | METH_KEYWORDS, channelsmod_get_info_doc},
+    {"get_channel_defaults",       _PyCFunction_CAST(channelsmod_get_channel_defaults),
+     METH_VARARGS | METH_KEYWORDS, channelsmod_get_channel_defaults_doc},
     {"_channel_id",                _PyCFunction_CAST(channelsmod__channel_id),
      METH_VARARGS | METH_KEYWORDS, NULL},
     {"_register_end_types",        _PyCFunction_CAST(channelsmod__register_end_types),
@@ -3278,7 +3496,8 @@ The 'interpreters' module provides a more convenient interface.");
 static int
 module_exec(PyObject *mod)
 {
-    if (_globals_init() != 0) {
+    int err = _globals_init();
+    if (handle_channel_error(err, mod, -1)) {
         return -1;
     }
 
diff --git a/Modules/_interpqueuesmodule.c b/Modules/_interpqueuesmodule.c
index 556953db6b8039..73f80fe3a1ef9b 100644
--- a/Modules/_interpqueuesmodule.c
+++ b/Modules/_interpqueuesmodule.c
@@ -9,7 +9,9 @@
 #include "pycore_crossinterp.h"   // struct _xid
 
 #define REGISTERS_HEAP_TYPES
+#define HAS_UNBOUND_ITEMS
 #include "_interpreters_common.h"
+#undef HAS_UNBOUND_ITEMS
 #undef REGISTERS_HEAP_TYPES
 
 
@@ -58,7 +60,6 @@ _release_xid_data(_PyCrossInterpreterData *data, int flags)
     return res;
 }
 
-
 static PyInterpreterState *
 _get_current_interp(void)
 {
@@ -394,42 +395,67 @@ handle_queue_error(int err, PyObject *mod, int64_t qid)
 struct _queueitem;
 
 typedef struct _queueitem {
+    /* The interpreter that added the item to the queue.
+       The actual bound interpid is found in item->data.
+       This is necessary because item->data might be NULL,
+       meaning the interpreter has been destroyed. */
+    int64_t interpid;
     _PyCrossInterpreterData *data;
     int fmt;
+    int unboundop;
     struct _queueitem *next;
 } _queueitem;
 
 static void
 _queueitem_init(_queueitem *item,
-                _PyCrossInterpreterData *data, int fmt)
+                int64_t interpid, _PyCrossInterpreterData *data,
+                int fmt, int unboundop)
 {
+    if (interpid < 0) {
+        interpid = _get_interpid(data);
+    }
+    else {
+        assert(data == NULL
+               || _PyCrossInterpreterData_INTERPID(data) < 0
+               || interpid == _PyCrossInterpreterData_INTERPID(data));
+    }
+    assert(check_unbound(unboundop));
     *item = (_queueitem){
+        .interpid = interpid,
         .data = data,
         .fmt = fmt,
+        .unboundop = unboundop,
     };
 }
 
+static void
+_queueitem_clear_data(_queueitem *item)
+{
+    if (item->data == NULL) {
+        return;
+    }
+    // It was allocated in queue_put().
+    (void)_release_xid_data(item->data, XID_IGNORE_EXC & XID_FREE);
+    item->data = NULL;
+}
+
 static void
 _queueitem_clear(_queueitem *item)
 {
     item->next = NULL;
-
-    if (item->data != NULL) {
-        // It was allocated in queue_put().
-        (void)_release_xid_data(item->data, XID_IGNORE_EXC & XID_FREE);
-        item->data = NULL;
-    }
+    _queueitem_clear_data(item);
 }
 
 static _queueitem *
-_queueitem_new(_PyCrossInterpreterData *data, int fmt)
+_queueitem_new(int64_t interpid, _PyCrossInterpreterData *data,
+               int fmt, int unboundop)
 {
     _queueitem *item = GLOBAL_MALLOC(_queueitem);
     if (item == NULL) {
         PyErr_NoMemory();
         return NULL;
     }
-    _queueitem_init(item, data, fmt);
+    _queueitem_init(item, interpid, data, fmt, unboundop);
     return item;
 }
 
@@ -452,15 +478,44 @@ _queueitem_free_all(_queueitem *item)
 
 static void
 _queueitem_popped(_queueitem *item,
-                  _PyCrossInterpreterData **p_data, int *p_fmt)
+                  _PyCrossInterpreterData **p_data, int *p_fmt, int *p_unboundop)
 {
     *p_data = item->data;
     *p_fmt = item->fmt;
+    *p_unboundop = item->unboundop;
     // We clear them here, so they won't be released in _queueitem_clear().
     item->data = NULL;
     _queueitem_free(item);
 }
 
+static int
+_queueitem_clear_interpreter(_queueitem *item)
+{
+    assert(item->interpid >= 0);
+    if (item->data == NULL) {
+        // Its interpreter was already cleared (or it was never bound).
+        // For UNBOUND_REMOVE it should have been freed at that time.
+        assert(item->unboundop != UNBOUND_REMOVE);
+        return 0;
+    }
+    assert(_PyCrossInterpreterData_INTERPID(item->data) == item->interpid);
+
+    switch (item->unboundop) {
+    case UNBOUND_REMOVE:
+        // The caller must free/clear it.
+        return 1;
+    case UNBOUND_ERROR:
+    case UNBOUND_REPLACE:
+        // We won't need the cross-interpreter data later
+        // so we completely throw it away.
+        _queueitem_clear_data(item);
+        return 0;
+    default:
+        Py_FatalError("not reachable");
+        return -1;
+    }
+}
+
 
 /* the queue */
 
@@ -474,12 +529,16 @@ typedef struct _queue {
         _queueitem *first;
         _queueitem *last;
     } items;
-    int fmt;
+    struct {
+        int fmt;
+        int unboundop;
+    } defaults;
 } _queue;
 
 static int
-_queue_init(_queue *queue, Py_ssize_t maxsize, int fmt)
+_queue_init(_queue *queue, Py_ssize_t maxsize, int fmt, int unboundop)
 {
+    assert(check_unbound(unboundop));
     PyThread_type_lock mutex = PyThread_allocate_lock();
     if (mutex == NULL) {
         return ERR_QUEUE_ALLOC;
@@ -490,7 +549,10 @@ _queue_init(_queue *queue, Py_ssize_t maxsize, int fmt)
         .items = {
             .maxsize = maxsize,
         },
-        .fmt = fmt,
+        .defaults = {
+            .fmt = fmt,
+            .unboundop = unboundop,
+        },
     };
     return 0;
 }
@@ -571,7 +633,8 @@ _queue_unlock(_queue *queue)
 }
 
 static int
-_queue_add(_queue *queue, _PyCrossInterpreterData *data, int fmt)
+_queue_add(_queue *queue, int64_t interpid, _PyCrossInterpreterData *data,
+           int fmt, int unboundop)
 {
     int err = _queue_lock(queue);
     if (err < 0) {
@@ -587,7 +650,7 @@ _queue_add(_queue *queue, _PyCrossInterpreterData *data, int fmt)
         return ERR_QUEUE_FULL;
     }
 
-    _queueitem *item = _queueitem_new(data, fmt);
+    _queueitem *item = _queueitem_new(interpid, data, fmt, unboundop);
     if (item == NULL) {
         _queue_unlock(queue);
         return -1;
@@ -608,7 +671,7 @@ _queue_add(_queue *queue, _PyCrossInterpreterData *data, int fmt)
 
 static int
 _queue_next(_queue *queue,
-            _PyCrossInterpreterData **p_data, int *p_fmt)
+            _PyCrossInterpreterData **p_data, int *p_fmt, int *p_unboundop)
 {
     int err = _queue_lock(queue);
     if (err < 0) {
@@ -627,7 +690,7 @@ _queue_next(_queue *queue,
     }
     queue->items.count -= 1;
 
-    _queueitem_popped(item, p_data, p_fmt);
+    _queueitem_popped(item, p_data, p_fmt, p_unboundop);
 
     _queue_unlock(queue);
     return 0;
@@ -692,14 +755,17 @@ _queue_clear_interpreter(_queue *queue, int64_t interpid)
     while (next != NULL) {
         _queueitem *item = next;
         next = item->next;
-        if (_PyCrossInterpreterData_INTERPID(item->data) == interpid) {
+        int remove = (item->interpid == interpid)
+            ? _queueitem_clear_interpreter(item)
+            : 0;
+        if (remove) {
+            _queueitem_free(item);
             if (prev == NULL) {
-                queue->items.first = item->next;
+                queue->items.first = next;
             }
             else {
-                prev->next = item->next;
+                prev->next = next;
             }
-            _queueitem_free(item);
             queue->items.count -= 1;
         }
         else {
@@ -779,28 +845,31 @@ typedef struct _queues {
 static void
 _queues_init(_queues *queues, PyThread_type_lock mutex)
 {
-    queues->mutex = mutex;
-    queues->head = NULL;
-    queues->count = 0;
-    queues->next_id = 1;
+    assert(mutex != NULL);
+    assert(queues->mutex == NULL);
+    *queues = (_queues){
+        .mutex = mutex,
+        .head = NULL,
+        .count = 0,
+        .next_id = 1,
+    };
 }
 
 static void
-_queues_fini(_queues *queues)
+_queues_fini(_queues *queues, PyThread_type_lock *p_mutex)
 {
+    PyThread_type_lock mutex = queues->mutex;
+    assert(mutex != NULL);
+
+    PyThread_acquire_lock(mutex, WAIT_LOCK);
     if (queues->count > 0) {
-        PyThread_acquire_lock(queues->mutex, WAIT_LOCK);
-        assert((queues->count == 0) != (queues->head != NULL));
-        _queueref *head = queues->head;
-        queues->head = NULL;
-        queues->count = 0;
-        PyThread_release_lock(queues->mutex);
-        _queuerefs_clear(head);
-    }
-    if (queues->mutex != NULL) {
-        PyThread_free_lock(queues->mutex);
-        queues->mutex = NULL;
+        assert(queues->head != NULL);
+        _queuerefs_clear(queues->head);
     }
+    *queues = (_queues){0};
+    PyThread_release_lock(mutex);
+
+    *p_mutex = mutex;
 }
 
 static int64_t
@@ -966,18 +1035,19 @@ _queues_decref(_queues *queues, int64_t qid)
     return res;
 }
 
-struct queue_id_and_fmt {
+struct queue_id_and_info {
     int64_t id;
     int fmt;
+    int unboundop;
 };
 
-static struct queue_id_and_fmt *
-_queues_list_all(_queues *queues, int64_t *count)
+static struct queue_id_and_info *
+_queues_list_all(_queues *queues, int64_t *p_count)
 {
-    struct queue_id_and_fmt *qids = NULL;
+    struct queue_id_and_info *qids = NULL;
     PyThread_acquire_lock(queues->mutex, WAIT_LOCK);
-    struct queue_id_and_fmt *ids = PyMem_NEW(struct queue_id_and_fmt,
-                                             (Py_ssize_t)(queues->count));
+    struct queue_id_and_info *ids = PyMem_NEW(struct queue_id_and_info,
+                                              (Py_ssize_t)(queues->count));
     if (ids == NULL) {
         goto done;
     }
@@ -985,9 +1055,10 @@ _queues_list_all(_queues *queues, int64_t *count)
     for (int64_t i=0; ref != NULL; ref = ref->next, i++) {
         ids[i].id = ref->qid;
         assert(ref->queue != NULL);
-        ids[i].fmt = ref->queue->fmt;
+        ids[i].fmt = ref->queue->defaults.fmt;
+        ids[i].unboundop = ref->queue->defaults.unboundop;
     }
-    *count = queues->count;
+    *p_count = queues->count;
 
     qids = ids;
 done:
@@ -1021,13 +1092,13 @@ _queue_free(_queue *queue)
 
 // Create a new queue.
 static int64_t
-queue_create(_queues *queues, Py_ssize_t maxsize, int fmt)
+queue_create(_queues *queues, Py_ssize_t maxsize, int fmt, int unboundop)
 {
     _queue *queue = GLOBAL_MALLOC(_queue);
     if (queue == NULL) {
         return ERR_QUEUE_ALLOC;
     }
-    int err = _queue_init(queue, maxsize, fmt);
+    int err = _queue_init(queue, maxsize, fmt, unboundop);
     if (err < 0) {
         GLOBAL_FREE(queue);
         return (int64_t)err;
@@ -1056,7 +1127,7 @@ queue_destroy(_queues *queues, int64_t qid)
 
 // Push an object onto the queue.
 static int
-queue_put(_queues *queues, int64_t qid, PyObject *obj, int fmt)
+queue_put(_queues *queues, int64_t qid, PyObject *obj, int fmt, int unboundop)
 {
     // Look up the queue.
     _queue *queue = NULL;
@@ -1077,9 +1148,12 @@ queue_put(_queues *queues, int64_t qid, PyObject *obj, int fmt)
         GLOBAL_FREE(data);
         return -1;
     }
+    assert(_PyCrossInterpreterData_INTERPID(data) == \
+           PyInterpreterState_GetID(PyInterpreterState_Get()));
 
     // Add the data to the queue.
-    int res = _queue_add(queue, data, fmt);
+    int64_t interpid = -1;  // _queueitem_init() will set it.
+    int res = _queue_add(queue, interpid, data, fmt, unboundop);
     _queue_unmark_waiter(queue, queues->mutex);
     if (res != 0) {
         // We may chain an exception here:
@@ -1094,7 +1168,8 @@ queue_put(_queues *queues, int64_t qid, PyObject *obj, int fmt)
 // Pop the next object off the queue.  Fail if empty.
 // XXX Support a "wait" mutex?
 static int
-queue_get(_queues *queues, int64_t qid, PyObject **res, int *p_fmt)
+queue_get(_queues *queues, int64_t qid,
+          PyObject **res, int *p_fmt, int *p_unboundop)
 {
     int err;
     *res = NULL;
@@ -1110,7 +1185,7 @@ queue_get(_queues *queues, int64_t qid, PyObject **res, int *p_fmt)
 
     // Pop off the next item from the queue.
     _PyCrossInterpreterData *data = NULL;
-    err = _queue_next(queue, &data, p_fmt);
+    err = _queue_next(queue, &data, p_fmt, p_unboundop);
     _queue_unmark_waiter(queue, queues->mutex);
     if (err != 0) {
         return err;
@@ -1240,7 +1315,7 @@ _queueid_xid_new(int64_t qid)
 
     struct _queueid_xid *data = PyMem_RawMalloc(sizeof(struct _queueid_xid));
     if (data == NULL) {
-        _queues_incref(queues, qid);
+        _queues_decref(queues, qid);
         return NULL;
     }
     data->qid = qid;
@@ -1326,6 +1401,7 @@ _queueobj_shared(PyThreadState *tstate, PyObject *queueobj,
    the data that we need to share between interpreters, so it cannot
    hold PyObject values. */
 static struct globals {
+    PyMutex mutex;
     int module_count;
     _queues queues;
 } _globals = {0};
@@ -1333,32 +1409,36 @@ static struct globals {
 static int
 _globals_init(void)
 {
-    // XXX This isn't thread-safe.
+    PyMutex_Lock(&_globals.mutex);
+    assert(_globals.module_count >= 0);
     _globals.module_count++;
-    if (_globals.module_count > 1) {
-        // Already initialized.
-        return 0;
-    }
-
-    assert(_globals.queues.mutex == NULL);
-    PyThread_type_lock mutex = PyThread_allocate_lock();
-    if (mutex == NULL) {
-        return ERR_QUEUES_ALLOC;
+    if (_globals.module_count == 1) {
+        // Called for the first time.
+        PyThread_type_lock mutex = PyThread_allocate_lock();
+        if (mutex == NULL) {
+            _globals.module_count--;
+            PyMutex_Unlock(&_globals.mutex);
+            return ERR_QUEUES_ALLOC;
+        }
+        _queues_init(&_globals.queues, mutex);
     }
-    _queues_init(&_globals.queues, mutex);
+    PyMutex_Unlock(&_globals.mutex);
     return 0;
 }
 
 static void
 _globals_fini(void)
 {
-    // XXX This isn't thread-safe.
+    PyMutex_Lock(&_globals.mutex);
+    assert(_globals.module_count > 0);
     _globals.module_count--;
-    if (_globals.module_count > 0) {
-        return;
+    if (_globals.module_count == 0) {
+        PyThread_type_lock mutex;
+        _queues_fini(&_globals.queues, &mutex);
+        assert(mutex != NULL);
+        PyThread_free_lock(mutex);
     }
-
-    _queues_fini(&_globals.queues);
+    PyMutex_Unlock(&_globals.mutex);
 }
 
 static _queues *
@@ -1397,15 +1477,22 @@ qidarg_converter(PyObject *arg, void *ptr)
 static PyObject *
 queuesmod_create(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"maxsize", "fmt", NULL};
+    static char *kwlist[] = {"maxsize", "fmt", "unboundop", NULL};
     Py_ssize_t maxsize;
     int fmt;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "ni:create", kwlist,
-                                     &maxsize, &fmt)) {
+    int unboundop;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "nii:create", kwlist,
+                                     &maxsize, &fmt, &unboundop))
+    {
+        return NULL;
+    }
+    if (!check_unbound(unboundop)) {
+        PyErr_Format(PyExc_ValueError,
+                     "unsupported unboundop %d", unboundop);
         return NULL;
     }
 
-    int64_t qid = queue_create(&_globals.queues, maxsize, fmt);
+    int64_t qid = queue_create(&_globals.queues, maxsize, fmt, unboundop);
     if (qid < 0) {
         (void)handle_queue_error((int)qid, self, qid);
         return NULL;
@@ -1427,7 +1514,7 @@ queuesmod_create(PyObject *self, PyObject *args, PyObject *kwds)
 }
 
 PyDoc_STRVAR(queuesmod_create_doc,
-"create(maxsize, fmt) -> qid\n\
+"create(maxsize, fmt, unboundop) -> qid\n\
 \n\
 Create a new cross-interpreter queue and return its unique generated ID.\n\
 It is a new reference as though bind() had been called on the queue.\n\
@@ -1439,7 +1526,7 @@ static PyObject *
 queuesmod_destroy(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&:destroy", kwlist,
                                      qidarg_converter, &qidarg)) {
         return NULL;
@@ -1463,9 +1550,9 @@ static PyObject *
 queuesmod_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     int64_t count = 0;
-    struct queue_id_and_fmt *qids = _queues_list_all(&_globals.queues, &count);
+    struct queue_id_and_info *qids = _queues_list_all(&_globals.queues, &count);
     if (qids == NULL) {
-        if (count == 0) {
+        if (!PyErr_Occurred() && count == 0) {
             return PyList_New(0);
         }
         return NULL;
@@ -1474,9 +1561,10 @@ queuesmod_list_all(PyObject *self, PyObject *Py_UNUSED(ignored))
     if (ids == NULL) {
         goto finally;
     }
-    struct queue_id_and_fmt *cur = qids;
+    struct queue_id_and_info *cur = qids;
     for (int64_t i=0; i < count; cur++, i++) {
-        PyObject *item = Py_BuildValue("Li", cur->id, cur->fmt);
+        PyObject *item = Py_BuildValue("Lii", cur->id, cur->fmt,
+                                       cur->unboundop);
         if (item == NULL) {
             Py_SETREF(ids, NULL);
             break;
@@ -1498,18 +1586,26 @@ Each corresponding default format is also included.");
 static PyObject *
 queuesmod_put(PyObject *self, PyObject *args, PyObject *kwds)
 {
-    static char *kwlist[] = {"qid", "obj", "fmt", NULL};
-    qidarg_converter_data qidarg;
+    static char *kwlist[] = {"qid", "obj", "fmt", "unboundop", NULL};
+    qidarg_converter_data qidarg = {0};
     PyObject *obj;
     int fmt;
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&Oi:put", kwlist,
-                                     qidarg_converter, &qidarg, &obj, &fmt)) {
+    int unboundop;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&Oii:put", kwlist,
+                                     qidarg_converter, &qidarg, &obj, &fmt,
+                                     &unboundop))
+    {
         return NULL;
     }
     int64_t qid = qidarg.id;
+    if (!check_unbound(unboundop)) {
+        PyErr_Format(PyExc_ValueError,
+                     "unsupported unboundop %d", unboundop);
+        return NULL;
+    }
 
     /* Queue up the object. */
-    int err = queue_put(&_globals.queues, qid, obj, fmt);
+    int err = queue_put(&_globals.queues, qid, obj, fmt, unboundop);
     // This is the only place that raises QueueFull.
     if (handle_queue_error(err, self, qid)) {
         return NULL;
@@ -1527,7 +1623,7 @@ static PyObject *
 queuesmod_get(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&:get", kwlist,
                                      qidarg_converter, &qidarg)) {
         return NULL;
@@ -1536,13 +1632,17 @@ queuesmod_get(PyObject *self, PyObject *args, PyObject *kwds)
 
     PyObject *obj = NULL;
     int fmt = 0;
-    int err = queue_get(&_globals.queues, qid, &obj, &fmt);
+    int unboundop = 0;
+    int err = queue_get(&_globals.queues, qid, &obj, &fmt, &unboundop);
     // This is the only place that raises QueueEmpty.
     if (handle_queue_error(err, self, qid)) {
         return NULL;
     }
 
-    PyObject *res = Py_BuildValue("Oi", obj, fmt);
+    if (obj == NULL) {
+        return Py_BuildValue("Oii", Py_None, fmt, unboundop);
+    }
+    PyObject *res = Py_BuildValue("OiO", obj, fmt, Py_None);
     Py_DECREF(obj);
     return res;
 }
@@ -1559,7 +1659,7 @@ static PyObject *
 queuesmod_bind(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&:bind", kwlist,
                                      qidarg_converter, &qidarg)) {
         return NULL;
@@ -1589,7 +1689,7 @@ queuesmod_release(PyObject *self, PyObject *args, PyObject *kwds)
 {
     // Note that only the current interpreter is affected.
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
                                      "O&:release", kwlist,
                                      qidarg_converter, &qidarg)) {
@@ -1618,7 +1718,7 @@ static PyObject *
 queuesmod_get_maxsize(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
                                      "O&:get_maxsize", kwlist,
                                      qidarg_converter, &qidarg)) {
@@ -1643,7 +1743,7 @@ static PyObject *
 queuesmod_get_queue_defaults(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
                                      "O&:get_queue_defaults", kwlist,
                                      qidarg_converter, &qidarg)) {
@@ -1656,17 +1756,12 @@ queuesmod_get_queue_defaults(PyObject *self, PyObject *args, PyObject *kwds)
     if (handle_queue_error(err, self, qid)) {
         return NULL;
     }
-    int fmt = queue->fmt;
+    int fmt = queue->defaults.fmt;
+    int unboundop = queue->defaults.unboundop;
     _queue_unmark_waiter(queue, _globals.queues.mutex);
 
-    PyObject *fmt_obj = PyLong_FromLong(fmt);
-    if (fmt_obj == NULL) {
-        return NULL;
-    }
-    // For now queues only have one default.
-    PyObject *res = PyTuple_Pack(1, fmt_obj);
-    Py_DECREF(fmt_obj);
-    return res;
+    PyObject *defaults = Py_BuildValue("ii", fmt, unboundop);
+    return defaults;
 }
 
 PyDoc_STRVAR(queuesmod_get_queue_defaults_doc,
@@ -1678,7 +1773,7 @@ static PyObject *
 queuesmod_is_full(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
                                      "O&:is_full", kwlist,
                                      qidarg_converter, &qidarg)) {
@@ -1706,7 +1801,7 @@ static PyObject *
 queuesmod_get_count(PyObject *self, PyObject *args, PyObject *kwds)
 {
     static char *kwlist[] = {"qid", NULL};
-    qidarg_converter_data qidarg;
+    qidarg_converter_data qidarg = {0};
     if (!PyArg_ParseTupleAndKeywords(args, kwds,
                                      "O&:get_count", kwlist,
                                      qidarg_converter, &qidarg)) {
@@ -1807,7 +1902,8 @@ The 'interpreters' module provides a more convenient interface.");
 static int
 module_exec(PyObject *mod)
 {
-    if (_globals_init() != 0) {
+    int err = _globals_init();
+    if (handle_queue_error(err, mod, -1)) {
         return -1;
     }
 
diff --git a/Modules/_interpreters_common.h b/Modules/_interpreters_common.h
index 07120f6ccc7207..0d2e0c9efd3837 100644
--- a/Modules/_interpreters_common.h
+++ b/Modules/_interpreters_common.h
@@ -19,3 +19,48 @@ clear_xid_class(PyTypeObject *cls)
     return _PyCrossInterpreterData_UnregisterClass(cls);
 }
 #endif
+
+
+static inline int64_t
+_get_interpid(_PyCrossInterpreterData *data)
+{
+    int64_t interpid;
+    if (data != NULL) {
+        interpid = _PyCrossInterpreterData_INTERPID(data);
+        assert(!PyErr_Occurred());
+    }
+    else {
+        interpid = PyInterpreterState_GetID(PyInterpreterState_Get());
+    }
+    return interpid;
+}
+
+
+/* unbound items ************************************************************/
+
+#ifdef HAS_UNBOUND_ITEMS
+
+#define UNBOUND_REMOVE 1
+#define UNBOUND_ERROR 2
+#define UNBOUND_REPLACE 3
+
+// It would also be possible to add UNBOUND_REPLACE where the replacement
+// value is user-provided.  There would be some limitations there, though.
+// Another possibility would be something like UNBOUND_COPY, where the
+// object is released but the underlying data is copied (with the "raw"
+// allocator) and used when the item is popped off the queue.
+
+static int
+check_unbound(int unboundop)
+{
+    switch (unboundop) {
+    case UNBOUND_REMOVE:
+    case UNBOUND_ERROR:
+    case UNBOUND_REPLACE:
+        return 1;
+    default:
+        return 0;
+    }
+}
+
+#endif
diff --git a/Modules/_interpretersmodule.c b/Modules/_interpretersmodule.c
index 86a4113dcc16f1..c968b33939c420 100644
--- a/Modules/_interpretersmodule.c
+++ b/Modules/_interpretersmodule.c
@@ -403,7 +403,11 @@ config_from_object(PyObject *configobj, PyInterpreterConfig *config)
         }
     }
     else if (PyUnicode_Check(configobj)) {
-        if (init_named_config(config, PyUnicode_AsUTF8(configobj)) < 0) {
+        const char *utf8name = PyUnicode_AsUTF8(configobj);
+        if (utf8name == NULL) {
+            return -1;
+        }
+        if (init_named_config(config, utf8name) < 0) {
             return -1;
         }
     }
@@ -458,7 +462,12 @@ _run_in_interpreter(PyInterpreterState *interp,
 
     // Prep and switch interpreters.
     if (_PyXI_Enter(&session, interp, shareables) < 0) {
-        assert(!PyErr_Occurred());
+        if (PyErr_Occurred()) {
+            // If an error occured at this step, it means that interp
+            // was not prepared and switched.
+            return -1;
+        }
+        // Now, apply the error from another interpreter:
         PyObject *excinfo = _PyXI_ApplyError(session.error);
         if (excinfo != NULL) {
             *p_excinfo = excinfo;
@@ -935,6 +944,11 @@ static int
 _interp_exec(PyObject *self, PyInterpreterState *interp,
              PyObject *code_arg, PyObject *shared_arg, PyObject **p_excinfo)
 {
+    if (shared_arg != NULL && !PyDict_CheckExact(shared_arg)) {
+        PyErr_SetString(PyExc_TypeError, "expected 'shared' to be a dict");
+        return -1;
+    }
+
     // Extract code.
     Py_ssize_t codestrlen = -1;
     PyObject *bytes_obj = NULL;
diff --git a/Modules/_io/bufferedio.c b/Modules/_io/bufferedio.c
index aa52711941d374..e45323c93a17ef 100644
--- a/Modules/_io/bufferedio.c
+++ b/Modules/_io/bufferedio.c
@@ -8,7 +8,6 @@
 */
 
 #include "Python.h"
-#include "pycore_bytesobject.h"         // _PyBytes_Join()
 #include "pycore_call.h"                // _PyObject_CallNoArgs()
 #include "pycore_object.h"              // _PyObject_GC_UNTRACK()
 #include "pycore_pyerrors.h"            // _Py_FatalErrorFormat()
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index 64eddcd314a803..ef69c5f2c11520 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -4,7 +4,7 @@ preserve
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 #  include "pycore_gc.h"          // PyGC_Head
-#  include "pycore_runtime.h"     // _Py_ID()
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
 #endif
 #include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
@@ -327,9 +327,7 @@ _io__Buffered_simple_flush(buffered *self, PyObject *Py_UNUSED(ignored))
     return return_value;
 }
 
-#if defined(_io__Buffered_closed_HAS_DOCSTR)
-#  define _io__Buffered_closed_DOCSTR _io__Buffered_closed__doc__
-#else
+#if !defined(_io__Buffered_closed_DOCSTR)
 #  define _io__Buffered_closed_DOCSTR NULL
 #endif
 #if defined(_IO__BUFFERED_CLOSED_GETSETDEF)
@@ -469,9 +467,7 @@ _io__Buffered_writable(buffered *self, PyObject *Py_UNUSED(ignored))
     return return_value;
 }
 
-#if defined(_io__Buffered_name_HAS_DOCSTR)
-#  define _io__Buffered_name_DOCSTR _io__Buffered_name__doc__
-#else
+#if !defined(_io__Buffered_name_DOCSTR)
 #  define _io__Buffered_name_DOCSTR NULL
 #endif
 #if defined(_IO__BUFFERED_NAME_GETSETDEF)
@@ -496,9 +492,7 @@ _io__Buffered_name_get(buffered *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io__Buffered_mode_HAS_DOCSTR)
-#  define _io__Buffered_mode_DOCSTR _io__Buffered_mode__doc__
-#else
+#if !defined(_io__Buffered_mode_DOCSTR)
 #  define _io__Buffered_mode_DOCSTR NULL
 #endif
 #if defined(_IO__BUFFERED_MODE_GETSETDEF)
@@ -1245,4 +1239,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4249187a725a3b3e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=985a70d6d7cd0154 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
index bae80a265fab07..a35cac7dc0b8d7 100644
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
@@ -438,4 +441,4 @@ _io__RawIOBase_readall(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=e7326fbefc52bfba input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dab5e9323d191e32 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/stringio.c.h b/Modules/_io/clinic/stringio.c.h
index 6bdb2181985f7d..e8259d26e825fb 100644
--- a/Modules/_io/clinic/stringio.c.h
+++ b/Modules/_io/clinic/stringio.c.h
@@ -475,9 +475,7 @@ _io_StringIO___setstate__(stringio *self, PyObject *state)
     return return_value;
 }
 
-#if defined(_io_StringIO_closed_HAS_DOCSTR)
-#  define _io_StringIO_closed_DOCSTR _io_StringIO_closed__doc__
-#else
+#if !defined(_io_StringIO_closed_DOCSTR)
 #  define _io_StringIO_closed_DOCSTR NULL
 #endif
 #if defined(_IO_STRINGIO_CLOSED_GETSETDEF)
@@ -502,9 +500,7 @@ _io_StringIO_closed_get(stringio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_StringIO_line_buffering_HAS_DOCSTR)
-#  define _io_StringIO_line_buffering_DOCSTR _io_StringIO_line_buffering__doc__
-#else
+#if !defined(_io_StringIO_line_buffering_DOCSTR)
 #  define _io_StringIO_line_buffering_DOCSTR NULL
 #endif
 #if defined(_IO_STRINGIO_LINE_BUFFERING_GETSETDEF)
@@ -529,9 +525,7 @@ _io_StringIO_line_buffering_get(stringio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_StringIO_newlines_HAS_DOCSTR)
-#  define _io_StringIO_newlines_DOCSTR _io_StringIO_newlines__doc__
-#else
+#if !defined(_io_StringIO_newlines_DOCSTR)
 #  define _io_StringIO_newlines_DOCSTR NULL
 #endif
 #if defined(_IO_STRINGIO_NEWLINES_GETSETDEF)
@@ -555,4 +549,4 @@ _io_StringIO_newlines_get(stringio *self, void *Py_UNUSED(context))
 
     return return_value;
 }
-/*[clinic end generated code: output=9ffea20cd32d4cd8 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b16edb931e4fa548 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index f04ee729abc9ed..efa992fca71022 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -4,7 +4,7 @@ preserve
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 #  include "pycore_gc.h"          // PyGC_Head
-#  include "pycore_runtime.h"     // _Py_ID()
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
 #endif
 #include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
 #include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
@@ -205,11 +205,12 @@ PyDoc_STRVAR(_io__TextIOBase_encoding__doc__,
 "Encoding of the text stream.\n"
 "\n"
 "Subclasses should override.");
-#define _io__TextIOBase_encoding_HAS_DOCSTR
+#if defined(_io__TextIOBase_encoding_DOCSTR)
+#   undef _io__TextIOBase_encoding_DOCSTR
+#endif
+#define _io__TextIOBase_encoding_DOCSTR _io__TextIOBase_encoding__doc__
 
-#if defined(_io__TextIOBase_encoding_HAS_DOCSTR)
-#  define _io__TextIOBase_encoding_DOCSTR _io__TextIOBase_encoding__doc__
-#else
+#if !defined(_io__TextIOBase_encoding_DOCSTR)
 #  define _io__TextIOBase_encoding_DOCSTR NULL
 #endif
 #if defined(_IO__TEXTIOBASE_ENCODING_GETSETDEF)
@@ -234,11 +235,12 @@ PyDoc_STRVAR(_io__TextIOBase_newlines__doc__,
 "Only line endings translated during reading are considered.\n"
 "\n"
 "Subclasses should override.");
-#define _io__TextIOBase_newlines_HAS_DOCSTR
+#if defined(_io__TextIOBase_newlines_DOCSTR)
+#   undef _io__TextIOBase_newlines_DOCSTR
+#endif
+#define _io__TextIOBase_newlines_DOCSTR _io__TextIOBase_newlines__doc__
 
-#if defined(_io__TextIOBase_newlines_HAS_DOCSTR)
-#  define _io__TextIOBase_newlines_DOCSTR _io__TextIOBase_newlines__doc__
-#else
+#if !defined(_io__TextIOBase_newlines_DOCSTR)
 #  define _io__TextIOBase_newlines_DOCSTR NULL
 #endif
 #if defined(_IO__TEXTIOBASE_NEWLINES_GETSETDEF)
@@ -261,11 +263,12 @@ PyDoc_STRVAR(_io__TextIOBase_errors__doc__,
 "The error setting of the decoder or encoder.\n"
 "\n"
 "Subclasses should override.");
-#define _io__TextIOBase_errors_HAS_DOCSTR
+#if defined(_io__TextIOBase_errors_DOCSTR)
+#   undef _io__TextIOBase_errors_DOCSTR
+#endif
+#define _io__TextIOBase_errors_DOCSTR _io__TextIOBase_errors__doc__
 
-#if defined(_io__TextIOBase_errors_HAS_DOCSTR)
-#  define _io__TextIOBase_errors_DOCSTR _io__TextIOBase_errors__doc__
-#else
+#if !defined(_io__TextIOBase_errors_DOCSTR)
 #  define _io__TextIOBase_errors_DOCSTR NULL
 #endif
 #if defined(_IO__TEXTIOBASE_ERRORS_GETSETDEF)
@@ -1131,9 +1134,7 @@ _io_TextIOWrapper_close(textio *self, PyObject *Py_UNUSED(ignored))
     return return_value;
 }
 
-#if defined(_io_TextIOWrapper_name_HAS_DOCSTR)
-#  define _io_TextIOWrapper_name_DOCSTR _io_TextIOWrapper_name__doc__
-#else
+#if !defined(_io_TextIOWrapper_name_DOCSTR)
 #  define _io_TextIOWrapper_name_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER_NAME_GETSETDEF)
@@ -1158,9 +1159,7 @@ _io_TextIOWrapper_name_get(textio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_TextIOWrapper_closed_HAS_DOCSTR)
-#  define _io_TextIOWrapper_closed_DOCSTR _io_TextIOWrapper_closed__doc__
-#else
+#if !defined(_io_TextIOWrapper_closed_DOCSTR)
 #  define _io_TextIOWrapper_closed_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER_CLOSED_GETSETDEF)
@@ -1185,9 +1184,7 @@ _io_TextIOWrapper_closed_get(textio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_TextIOWrapper_newlines_HAS_DOCSTR)
-#  define _io_TextIOWrapper_newlines_DOCSTR _io_TextIOWrapper_newlines__doc__
-#else
+#if !defined(_io_TextIOWrapper_newlines_DOCSTR)
 #  define _io_TextIOWrapper_newlines_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER_NEWLINES_GETSETDEF)
@@ -1212,9 +1209,7 @@ _io_TextIOWrapper_newlines_get(textio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_TextIOWrapper_errors_HAS_DOCSTR)
-#  define _io_TextIOWrapper_errors_DOCSTR _io_TextIOWrapper_errors__doc__
-#else
+#if !defined(_io_TextIOWrapper_errors_DOCSTR)
 #  define _io_TextIOWrapper_errors_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER_ERRORS_GETSETDEF)
@@ -1239,9 +1234,7 @@ _io_TextIOWrapper_errors_get(textio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_io_TextIOWrapper__CHUNK_SIZE_HAS_DOCSTR)
-#  define _io_TextIOWrapper__CHUNK_SIZE_DOCSTR _io_TextIOWrapper__CHUNK_SIZE__doc__
-#else
+#if !defined(_io_TextIOWrapper__CHUNK_SIZE_DOCSTR)
 #  define _io_TextIOWrapper__CHUNK_SIZE_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER__CHUNK_SIZE_GETSETDEF)
@@ -1266,9 +1259,7 @@ _io_TextIOWrapper__CHUNK_SIZE_get(textio *self, void *Py_UNUSED(context))
     return return_value;
 }
 
-#if defined(_IO_TEXTIOWRAPPER__CHUNK_SIZE_HAS_DOCSTR)
-#  define _io_TextIOWrapper__CHUNK_SIZE_DOCSTR _io_TextIOWrapper__CHUNK_SIZE__doc__
-#else
+#if !defined(_io_TextIOWrapper__CHUNK_SIZE_DOCSTR)
 #  define _io_TextIOWrapper__CHUNK_SIZE_DOCSTR NULL
 #endif
 #if defined(_IO_TEXTIOWRAPPER__CHUNK_SIZE_GETSETDEF)
@@ -1292,4 +1283,4 @@ _io_TextIOWrapper__CHUNK_SIZE_set(textio *self, PyObject *value, void *Py_UNUSED
 
     return return_value;
 }
-/*[clinic end generated code: output=93a5a91a22100a28 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=6f78a6d99fad4893 input=a9049054013a1b77]*/
diff --git a/Modules/_io/stringio.c b/Modules/_io/stringio.c
index 06bc2679e8e227..e39289a02bda0f 100644
--- a/Modules/_io/stringio.c
+++ b/Modules/_io/stringio.c
@@ -196,7 +196,7 @@ write_str(stringio *self, PyObject *obj)
     }
     if (self->writenl) {
         PyObject *translated = PyUnicode_Replace(
-            decoded, &_Py_STR(newline), self->writenl, -1);
+            decoded, _Py_LATIN1_CHR('\n'), self->writenl, -1);
         Py_SETREF(decoded, translated);
     }
     if (decoded == NULL)
@@ -908,23 +908,25 @@ _io_StringIO___setstate___impl(stringio *self, PyObject *state)
        once by __init__. So we do not take any chance and replace object's
        buffer completely. */
     {
-        PyObject *item;
-        Py_UCS4 *buf;
-        Py_ssize_t bufsize;
-
-        item = PyTuple_GET_ITEM(state, 0);
-        buf = PyUnicode_AsUCS4Copy(item);
-        if (buf == NULL)
-            return NULL;
-        bufsize = PyUnicode_GET_LENGTH(item);
+        PyObject *item = PyTuple_GET_ITEM(state, 0);
+        if (PyUnicode_Check(item)) {
+            Py_UCS4 *buf = PyUnicode_AsUCS4Copy(item);
+            if (buf == NULL)
+                return NULL;
+            Py_ssize_t bufsize = PyUnicode_GET_LENGTH(item);
 
-        if (resize_buffer(self, bufsize) < 0) {
+            if (resize_buffer(self, bufsize) < 0) {
+                PyMem_Free(buf);
+                return NULL;
+            }
+            memcpy(self->buf, buf, bufsize * sizeof(Py_UCS4));
             PyMem_Free(buf);
-            return NULL;
+            self->string_size = bufsize;
+        }
+        else {
+            assert(item == Py_None);
+            self->string_size = 0;
         }
-        memcpy(self->buf, buf, bufsize * sizeof(Py_UCS4));
-        PyMem_Free(buf);
-        self->string_size = bufsize;
     }
 
     /* Set carefully the position value. Alternatively, we could use the seek
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 9dff8eafb2560f..c162d8106ec1fd 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -1719,16 +1719,26 @@ _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
         bytes_len = PyBytes_GET_SIZE(b);
     }
 
-    if (self->pending_bytes == NULL) {
-        self->pending_bytes_count = 0;
-        self->pending_bytes = b;
-    }
-    else if (self->pending_bytes_count + bytes_len > self->chunk_size) {
-        // Prevent to concatenate more than chunk_size data.
-        if (_textiowrapper_writeflush(self) < 0) {
-            Py_DECREF(b);
-            return NULL;
+    // We should avoid concatinating huge data.
+    // Flush the buffer before adding b to the buffer if b is not small.
+    // https://github.com/python/cpython/issues/87426
+    if (bytes_len >= self->chunk_size) {
+        // _textiowrapper_writeflush() calls buffer.write().
+        // self->pending_bytes can be appended during buffer->write()
+        // or other thread.
+        // We need to loop until buffer becomes empty.
+        // https://github.com/python/cpython/issues/118138
+        // https://github.com/python/cpython/issues/119506
+        while (self->pending_bytes != NULL) {
+            if (_textiowrapper_writeflush(self) < 0) {
+                Py_DECREF(b);
+                return NULL;
+            }
         }
+    }
+
+    if (self->pending_bytes == NULL) {
+        assert(self->pending_bytes_count == 0);
         self->pending_bytes = b;
     }
     else if (!PyList_CheckExact(self->pending_bytes)) {
@@ -1737,6 +1747,9 @@ _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
             Py_DECREF(b);
             return NULL;
         }
+        // Since Python 3.12, allocating GC object won't trigger GC and release
+        // GIL. See https://github.com/python/cpython/issues/97922
+        assert(!PyList_CheckExact(self->pending_bytes));
         PyList_SET_ITEM(list, 0, self->pending_bytes);
         PyList_SET_ITEM(list, 1, b);
         self->pending_bytes = list;
diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index ec5c298066a587..75c61d7ad3c453 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -135,19 +135,67 @@ char _PyIO_get_console_type(PyObject *path_or_fd) {
 }
 
 static DWORD
-_find_last_utf8_boundary(const char *buf, DWORD len)
+_find_last_utf8_boundary(const unsigned char *buf, DWORD len)
 {
-    /* This function never returns 0, returns the original len instead */
-    DWORD count = 1;
-    if (len == 0 || (buf[len - 1] & 0x80) == 0) {
-        return len;
-    }
-    for (;; count++) {
-        if (count > 3 || count >= len) {
+    for (DWORD count = 1; count < 4 && count <= len; count++) {
+        unsigned char c = buf[len - count];
+        if (c < 0x80) {
+            /* No starting byte found. */
             return len;
         }
-        if ((buf[len - count] & 0xc0) != 0x80) {
-            return len - count;
+        if (c >= 0xc0) {
+            if (c < 0xe0 /* 2-bytes sequence */ ? count < 2 :
+                c < 0xf0 /* 3-bytes sequence */ ? count < 3 :
+                c < 0xf8 /* 4-bytes sequence */)
+            {
+                /* Incomplete multibyte sequence. */
+                return len - count;
+            }
+            /* Either complete or invalid sequence. */
+            return len;
+        }
+    }
+    /* Either complete 4-bytes sequence or invalid sequence. */
+    return len;
+}
+
+/* Find the number of UTF-8 bytes that corresponds to the specified number of
+ * wchars.
+ * I.e. find x <= len so that MultiByteToWideChar(CP_UTF8, 0, s, x, NULL, 0) == n.
+ *
+ * WideCharToMultiByte() cannot be used for this, because the UTF-8 -> wchar
+ * conversion is not reversible (invalid UTF-8 byte produces \ufffd which
+ * will be converted back to 3-bytes UTF-8 sequence \xef\xbf\xbd).
+ * So we need to use binary search.
+ */
+static DWORD
+_wchar_to_utf8_count(const unsigned char *s, DWORD len, DWORD n)
+{
+    DWORD start = 0;
+    while (1) {
+        DWORD mid = 0;
+        for (DWORD i = len / 2; i <= len; i++) {
+            mid = _find_last_utf8_boundary(s, i);
+            if (mid != 0) {
+                break;
+            }
+            /* The middle could split the first multibytes sequence. */
+        }
+        if (mid == len) {
+            return start + len;
+        }
+        if (mid == 0) {
+            mid = len > 1 ? len - 1 : 1;
+        }
+        DWORD wlen = MultiByteToWideChar(CP_UTF8, 0, s, mid, NULL, 0);
+        if (wlen <= n) {
+            s += mid;
+            start += mid;
+            len -= mid;
+            n -= wlen;
+        }
+        else {
+            len = mid;
         }
     }
 }
@@ -563,8 +611,10 @@ read_console_w(HANDLE handle, DWORD maxlen, DWORD *readlen) {
     int err = 0, sig = 0;
 
     wchar_t *buf = (wchar_t*)PyMem_Malloc(maxlen * sizeof(wchar_t));
-    if (!buf)
+    if (!buf) {
+        PyErr_NoMemory();
         goto error;
+    }
 
     *readlen = 0;
 
@@ -622,6 +672,7 @@ read_console_w(HANDLE handle, DWORD maxlen, DWORD *readlen) {
             Py_UNBLOCK_THREADS
             if (!newbuf) {
                 sig = -1;
+                PyErr_NoMemory();
                 break;
             }
             buf = newbuf;
@@ -645,8 +696,10 @@ read_console_w(HANDLE handle, DWORD maxlen, DWORD *readlen) {
     if (*readlen > 0 && buf[0] == L'\x1a') {
         PyMem_Free(buf);
         buf = (wchar_t *)PyMem_Malloc(sizeof(wchar_t));
-        if (!buf)
+        if (!buf) {
+            PyErr_NoMemory();
             goto error;
+        }
         buf[0] = L'\0';
         *readlen = 0;
     }
@@ -824,8 +877,10 @@ _io__WindowsConsoleIO_readall_impl(winconsoleio *self)
     bufsize = BUFSIZ;
 
     buf = (wchar_t*)PyMem_Malloc((bufsize + 1) * sizeof(wchar_t));
-    if (buf == NULL)
+    if (buf == NULL) {
+        PyErr_NoMemory();
         return NULL;
+    }
 
     while (1) {
         wchar_t *subbuf;
@@ -847,6 +902,7 @@ _io__WindowsConsoleIO_readall_impl(winconsoleio *self)
                                          (bufsize + 1) * sizeof(wchar_t));
             if (tmp == NULL) {
                 PyMem_Free(buf);
+                PyErr_NoMemory();
                 return NULL;
             }
             buf = tmp;
@@ -1022,43 +1078,49 @@ _io__WindowsConsoleIO_write_impl(winconsoleio *self, PyTypeObject *cls,
         len = (DWORD)b->len;
 
     Py_BEGIN_ALLOW_THREADS
-    wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len, NULL, 0);
-
     /* issue11395 there is an unspecified upper bound on how many bytes
        can be written at once. We cap at 32k - the caller will have to
        handle partial writes.
        Since we don't know how many input bytes are being ignored, we
        have to reduce and recalculate. */
-    while (wlen > 32766 / sizeof(wchar_t)) {
-        len /= 2;
+    const DWORD max_wlen = 32766 / sizeof(wchar_t);
+    /* UTF-8 to wchar ratio is at most 3:1. */
+    len = Py_MIN(len, max_wlen * 3);
+    while (1) {
         /* Fix for github issues gh-110913 and gh-82052. */
         len = _find_last_utf8_boundary(b->buf, len);
         wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len, NULL, 0);
+        if (wlen <= max_wlen) {
+            break;
+        }
+        len /= 2;
     }
     Py_END_ALLOW_THREADS
 
-    if (!wlen)
-        return PyErr_SetFromWindowsErr(0);
+    if (!wlen) {
+        return PyLong_FromLong(0);
+    }
 
     wbuf = (wchar_t*)PyMem_Malloc(wlen * sizeof(wchar_t));
+    if (!wbuf) {
+        PyErr_NoMemory();
+        return NULL;
+    }
 
     Py_BEGIN_ALLOW_THREADS
     wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len, wbuf, wlen);
     if (wlen) {
         res = WriteConsoleW(handle, wbuf, wlen, &n, NULL);
+#ifdef Py_DEBUG
+        if (res) {
+#else
         if (res && n < wlen) {
+#endif
             /* Wrote fewer characters than expected, which means our
              * len value may be wrong. So recalculate it from the
-             * characters that were written. As this could potentially
-             * result in a different value, we also validate that value.
+             * characters that were written.
              */
-            len = WideCharToMultiByte(CP_UTF8, 0, wbuf, n,
-                NULL, 0, NULL, NULL);
-            if (len) {
-                wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len,
-                    NULL, 0);
-                assert(wlen == len);
-            }
+            len = _wchar_to_utf8_count(b->buf, len, n);
         }
     } else
         res = 0;
diff --git a/Modules/_localemodule.c b/Modules/_localemodule.c
index d4923442478b3e..d1d3ce9cc91239 100644
--- a/Modules/_localemodule.c
+++ b/Modules/_localemodule.c
@@ -52,7 +52,7 @@ module _locale
 [clinic start generated code]*/
 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=ed98569b726feada]*/
 
-/* support functions for formatting floating point numbers */
+/* support functions for formatting floating-point numbers */
 
 /* the grouping is terminated by either 0 or CHAR_MAX */
 static PyObject*
@@ -585,6 +585,37 @@ static struct langinfo_constant{
     {0, 0}
 };
 
+#ifdef __GLIBC__
+#if defined(ALT_DIGITS) || defined(ERA)
+static PyObject *
+decode_strings(const char *result, size_t max_count)
+{
+    /* Convert a sequence of NUL-separated C strings to a Python string
+     * containing semicolon separated items. */
+    size_t i = 0;
+    size_t count = 0;
+    for (; count < max_count && result[i]; count++) {
+        i += strlen(result + i) + 1;
+    }
+    char *buf = PyMem_Malloc(i);
+    if (buf == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    memcpy(buf, result, i);
+    /* Replace all NULs with semicolons. */
+    i = 0;
+    while (--count) {
+        i += strlen(buf + i);
+        buf[i++] = ';';
+    }
+    PyObject *pyresult = PyUnicode_DecodeLocale(buf, NULL);
+    PyMem_Free(buf);
+    return pyresult;
+}
+#endif
+#endif
+
 /*[clinic input]
 _locale.nl_langinfo
 
@@ -608,7 +639,28 @@ _locale_nl_langinfo_impl(PyObject *module, int item)
                instead of an empty string for nl_langinfo(ERA).  */
             const char *result = nl_langinfo(item);
             result = result != NULL ? result : "";
-            return PyUnicode_DecodeLocale(result, NULL);
+            PyObject *pyresult;
+#ifdef __GLIBC__
+            /* According to the POSIX specification the result must be
+             * a sequence of semicolon-separated strings.
+             * But in Glibc they are NUL-separated. */
+#ifdef ALT_DIGITS
+            if (item == ALT_DIGITS && *result) {
+                pyresult = decode_strings(result, 100);
+            }
+            else
+#endif
+#ifdef ERA
+            if (item == ERA && *result) {
+                pyresult = decode_strings(result, SIZE_MAX);
+            }
+            else
+#endif
+#endif
+            {
+                pyresult = PyUnicode_DecodeLocale(result, NULL);
+            }
+            return pyresult;
         }
     PyErr_SetString(PyExc_ValueError, "unsupported langinfo constant");
     return NULL;
diff --git a/Modules/_lsprof.c b/Modules/_lsprof.c
index 5cf9eba243bd20..084f8b162270b8 100644
--- a/Modules/_lsprof.c
+++ b/Modules/_lsprof.c
@@ -59,6 +59,7 @@ typedef struct {
 #define POF_ENABLED     0x001
 #define POF_SUBCALLS    0x002
 #define POF_BUILTINS    0x004
+#define POF_EXT_TIMER   0x008
 #define POF_NOMEMORY    0x100
 
 /*[clinic input]
@@ -87,7 +88,14 @@ _lsprof_get_state(PyObject *module)
 
 static PyTime_t CallExternalTimer(ProfilerObject *pObj)
 {
-    PyObject *o = _PyObject_CallNoArgs(pObj->externalTimer);
+    PyObject *o = NULL;
+
+    // External timer can do arbitrary things so we need a flag to prevent
+    // horrible things to happen
+    pObj->flags |= POF_EXT_TIMER;
+    o = _PyObject_CallNoArgs(pObj->externalTimer);
+    pObj->flags &= ~POF_EXT_TIMER;
+
     if (o == NULL) {
         PyErr_WriteUnraisable(pObj->externalTimer);
         return 0;
@@ -600,6 +608,12 @@ setBuiltins(ProfilerObject *pObj, int nvalue)
 
 PyObject* pystart_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size)
 {
+    if (size < 2) {
+        PyErr_Format(PyExc_TypeError,
+                     "_pystart_callback expected 2 arguments, got %zd",
+                     size);
+        return NULL;
+    }
     PyObject* code = args[0];
     ptrace_enter_call((PyObject*)self, (void *)code, (PyObject *)code);
 
@@ -608,6 +622,12 @@ PyObject* pystart_callback(ProfilerObject* self, PyObject *const *args, Py_ssize
 
 PyObject* pyreturn_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size)
 {
+    if (size < 3) {
+        PyErr_Format(PyExc_TypeError,
+                     "_pyreturn_callback expected 3 arguments, got %zd",
+                     size);
+        return NULL;
+    }
     PyObject* code = args[0];
     ptrace_leave_call((PyObject*)self, (void *)code);
 
@@ -643,6 +663,12 @@ PyObject* get_cfunc_from_callable(PyObject* callable, PyObject* self_arg, PyObje
 
 PyObject* ccall_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size)
 {
+    if (size < 4) {
+        PyErr_Format(PyExc_TypeError,
+                     "_ccall_callback expected 4 arguments, got %zd",
+                     size);
+        return NULL;
+    }
     if (self->flags & POF_BUILTINS) {
         PyObject* callable = args[2];
         PyObject* self_arg = args[3];
@@ -661,6 +687,12 @@ PyObject* ccall_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t
 
 PyObject* creturn_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size)
 {
+    if (size < 4) {
+        PyErr_Format(PyExc_TypeError,
+                     "_creturn_callback expected 4 arguments, got %zd",
+                     size);
+        return NULL;
+    }
     if (self->flags & POF_BUILTINS) {
         PyObject* callable = args[2];
         PyObject* self_arg = args[3];
@@ -722,34 +754,47 @@ profiler_enable(ProfilerObject *self, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    if (PyObject_CallMethod(monitoring, "use_tool_id", "is", self->tool_id, "cProfile") == NULL) {
+    PyObject *check = PyObject_CallMethod(monitoring,
+                                          "use_tool_id", "is",
+                                          self->tool_id, "cProfile");
+    if (check == NULL) {
         PyErr_Format(PyExc_ValueError, "Another profiling tool is already active");
-        Py_DECREF(monitoring);
-        return NULL;
+        goto error;
     }
+    Py_DECREF(check);
 
     for (int i = 0; callback_table[i].callback_method; i++) {
+        int event = (1 << callback_table[i].event);
         PyObject* callback = PyObject_GetAttrString((PyObject*)self, callback_table[i].callback_method);
         if (!callback) {
-            Py_DECREF(monitoring);
-            return NULL;
+            goto error;
         }
-        Py_XDECREF(PyObject_CallMethod(monitoring, "register_callback", "iiO", self->tool_id,
-                                       (1 << callback_table[i].event),
-                                       callback));
+        PyObject *register_result = PyObject_CallMethod(monitoring, "register_callback",
+                                                        "iiO", self->tool_id,
+                                                        event, callback);
         Py_DECREF(callback);
-        all_events |= (1 << callback_table[i].event);
+        if (register_result == NULL) {
+            goto error;
+        }
+        Py_DECREF(register_result);
+        all_events |= event;
     }
 
-    if (!PyObject_CallMethod(monitoring, "set_events", "ii", self->tool_id, all_events)) {
-        Py_DECREF(monitoring);
-        return NULL;
+    PyObject *event_result = PyObject_CallMethod(monitoring, "set_events", "ii",
+                                                 self->tool_id, all_events);
+    if (event_result == NULL) {
+        goto error;
     }
 
+    Py_DECREF(event_result);
     Py_DECREF(monitoring);
 
     self->flags |= POF_ENABLED;
     Py_RETURN_NONE;
+
+error:
+    Py_DECREF(monitoring);
+    return NULL;
 }
 
 static void
@@ -777,6 +822,11 @@ Stop collecting profiling information.\n\
 static PyObject*
 profiler_disable(ProfilerObject *self, PyObject* noarg)
 {
+    if (self->flags & POF_EXT_TIMER) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "cannot disable profiler in external timer");
+        return NULL;
+    }
     if (self->flags & POF_ENABLED) {
         PyObject* result = NULL;
         PyObject* monitoring = _PyImport_GetModuleAttrString("sys", "monitoring");
@@ -830,6 +880,11 @@ Clear all profiling information collected so far.\n\
 static PyObject*
 profiler_clear(ProfilerObject *pObj, PyObject* noarg)
 {
+    if (pObj->flags & POF_EXT_TIMER) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "cannot clear profiler in external timer");
+        return NULL;
+    }
     clearEntries(pObj);
     Py_RETURN_NONE;
 }
@@ -838,6 +893,7 @@ static int
 profiler_traverse(ProfilerObject *op, visitproc visit, void *arg)
 {
     Py_VISIT(Py_TYPE(op));
+    Py_VISIT(op->externalTimer);
     return 0;
 }
 
diff --git a/Modules/_multiprocessing/clinic/semaphore.c.h b/Modules/_multiprocessing/clinic/semaphore.c.h
index 64e666b5af6f5b..512e5a016192fb 100644
--- a/Modules/_multiprocessing/clinic/semaphore.c.h
+++ b/Modules/_multiprocessing/clinic/semaphore.c.h
@@ -473,7 +473,13 @@ _multiprocessing_SemLock___enter___impl(SemLockObject *self);
 static PyObject *
 _multiprocessing_SemLock___enter__(SemLockObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return _multiprocessing_SemLock___enter___impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _multiprocessing_SemLock___enter___impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 #endif /* defined(HAVE_MP_SEMAPHORE) */
@@ -518,7 +524,9 @@ _multiprocessing_SemLock___exit__(SemLockObject *self, PyObject *const *args, Py
     }
     exc_tb = args[2];
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _multiprocessing_SemLock___exit___impl(self, exc_type, exc_value, exc_tb);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -565,4 +573,4 @@ _multiprocessing_SemLock___exit__(SemLockObject *self, PyObject *const *args, Py
 #ifndef _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
     #define _MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEMLOCK___EXIT___METHODDEF) */
-/*[clinic end generated code: output=713b597256233716 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=dea36482d23a355f input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/semaphore.c b/Modules/_multiprocessing/semaphore.c
index 5bb055f501e35b..8c6a4a279205d3 100644
--- a/Modules/_multiprocessing/semaphore.c
+++ b/Modules/_multiprocessing/semaphore.c
@@ -27,6 +27,8 @@ typedef struct {
     char *name;
 } SemLockObject;
 
+#define _SemLockObject_CAST(op) ((SemLockObject *)(op))
+
 /*[python input]
 class SEM_HANDLE_converter(CConverter):
     type = "SEM_HANDLE"
@@ -575,8 +577,9 @@ _multiprocessing_SemLock__rebuild_impl(PyTypeObject *type, SEM_HANDLE handle,
 }
 
 static void
-semlock_dealloc(SemLockObject* self)
+semlock_dealloc(PyObject *op)
 {
+    SemLockObject *self = _SemLockObject_CAST(op);
     PyTypeObject *tp = Py_TYPE(self);
     PyObject_GC_UnTrack(self);
     if (self->handle != SEM_FAILED)
@@ -682,6 +685,7 @@ _multiprocessing_SemLock__after_fork_impl(SemLockObject *self)
 }
 
 /*[clinic input]
+@critical_section
 _multiprocessing.SemLock.__enter__
 
 Enter the semaphore/lock.
@@ -689,12 +693,13 @@ Enter the semaphore/lock.
 
 static PyObject *
 _multiprocessing_SemLock___enter___impl(SemLockObject *self)
-/*[clinic end generated code: output=beeb2f07c858511f input=c5e27d594284690b]*/
+/*[clinic end generated code: output=beeb2f07c858511f input=d35c9860992ee790]*/
 {
     return _multiprocessing_SemLock_acquire_impl(self, 1, Py_None);
 }
 
 /*[clinic input]
+@critical_section
 _multiprocessing.SemLock.__exit__
 
     exc_type: object = None
@@ -709,13 +714,13 @@ static PyObject *
 _multiprocessing_SemLock___exit___impl(SemLockObject *self,
                                        PyObject *exc_type,
                                        PyObject *exc_value, PyObject *exc_tb)
-/*[clinic end generated code: output=3b37c1a9f8b91a03 input=7d644b64a89903f8]*/
+/*[clinic end generated code: output=3b37c1a9f8b91a03 input=1610c8cc3e0e337e]*/
 {
     return _multiprocessing_SemLock_release_impl(self);
 }
 
 static int
-semlock_traverse(SemLockObject *s, visitproc visit, void *arg)
+semlock_traverse(PyObject *s, visitproc visit, void *arg)
 {
     Py_VISIT(Py_TYPE(s));
     return 0;
diff --git a/Modules/_opcode.c b/Modules/_opcode.c
index cc72cb170ceaed..4bf63932d22074 100644
--- a/Modules/_opcode.c
+++ b/Modules/_opcode.c
@@ -5,9 +5,10 @@
 #include "Python.h"
 #include "compile.h"
 #include "opcode.h"
-#include "internal/pycore_code.h"
-#include "internal/pycore_compile.h"
-#include "internal/pycore_intrinsics.h"
+#include "pycore_code.h"
+#include "pycore_compile.h"
+#include "pycore_intrinsics.h"
+#include "pycore_optimizer.h"     // _Py_GetExecutor()
 
 /*[clinic input]
 module _opcode
@@ -368,7 +369,7 @@ _opcode_get_executor_impl(PyObject *module, PyObject *code, int offset)
         return NULL;
     }
 #ifdef _Py_TIER2
-    return (PyObject *)PyUnstable_GetExecutor((PyCodeObject *)code, offset);
+    return (PyObject *)_Py_GetExecutor((PyCodeObject *)code, offset);
 #else
     PyErr_Format(PyExc_RuntimeError,
                  "Executors are not available in this build");
diff --git a/Modules/_operator.c b/Modules/_operator.c
index 5d3f88327d19ad..261b5cf64a4a03 100644
--- a/Modules/_operator.c
+++ b/Modules/_operator.c
@@ -2,6 +2,7 @@
 #include "pycore_modsupport.h"    // _PyArg_NoKwnames()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_runtime.h"       // _Py_ID()
+#include "pycore_pystate.h"       // _PyInterpreterState_GET()
 
 
 #include "clinic/_operator.c.h"
@@ -1236,6 +1237,7 @@ attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
 
     /* prepare attr while checking args */
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     for (idx = 0; idx < nattrs; ++idx) {
         PyObject *item = PyTuple_GET_ITEM(args, idx);
         int dot_count;
@@ -1259,7 +1261,7 @@ attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 
         if (dot_count == 0) {
             Py_INCREF(item);
-            PyUnicode_InternInPlace(&item);
+            _PyUnicode_InternMortal(interp, &item);
             PyTuple_SET_ITEM(attr, idx, item);
         } else { /* make it a tuple of non-dotted attrnames */
             PyObject *attr_chain = PyTuple_New(dot_count + 1);
@@ -1285,7 +1287,7 @@ attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
                     Py_DECREF(attr);
                     return NULL;
                 }
-                PyUnicode_InternInPlace(&attr_chain_item);
+                _PyUnicode_InternMortal(interp, &attr_chain_item);
                 PyTuple_SET_ITEM(attr_chain, attr_chain_idx, attr_chain_item);
                 ++attr_chain_idx;
                 unibuff_till = unibuff_from = unibuff_till + 1;
@@ -1299,7 +1301,7 @@ attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
                 Py_DECREF(attr);
                 return NULL;
             }
-            PyUnicode_InternInPlace(&attr_chain_item);
+            _PyUnicode_InternMortal(interp, &attr_chain_item);
             PyTuple_SET_ITEM(attr_chain, attr_chain_idx, attr_chain_item);
 
             PyTuple_SET_ITEM(attr, idx, attr_chain);
@@ -1570,6 +1572,7 @@ typedef struct {
     vectorcallfunc vectorcall;
 } methodcallerobject;
 
+#ifndef Py_GIL_DISABLED
 static int _methodcaller_initialize_vectorcall(methodcallerobject* mc)
 {
     PyObject* args = mc->xargs;
@@ -1632,6 +1635,7 @@ methodcaller_vectorcall(
             (PyTuple_GET_SIZE(mc->xargs)) | PY_VECTORCALL_ARGUMENTS_OFFSET,
             mc->vectorcall_kwnames);
 }
+#endif
 
 
 /* AC 3.5: variable number of arguments, not currently support by AC */
@@ -1662,7 +1666,8 @@ methodcaller_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     }
 
     Py_INCREF(name);
-    PyUnicode_InternInPlace(&name);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternMortal(interp, &name);
     mc->name = name;
 
     mc->xargs = Py_XNewRef(args); // allows us to use borrowed references
@@ -1670,7 +1675,14 @@ methodcaller_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     mc->vectorcall_args = 0;
 
 
+#ifdef Py_GIL_DISABLED
+    // gh-127065: The current implementation of methodcaller_vectorcall
+    // is not thread-safe because it modifies the `vectorcall_args` array,
+    // which is shared across calls.
+    mc->vectorcall = NULL;
+#else
     mc->vectorcall = (vectorcallfunc)methodcaller_vectorcall;
+#endif
 
     PyObject_GC_Track(mc);
     return (PyObject *)mc;
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 754a326822e0f0..9bb3947e0967a4 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -612,6 +612,7 @@ typedef struct PicklerObject {
                                    objects to support self-referential objects
                                    pickling. */
     PyObject *persistent_id;    /* persistent_id() method, can be NULL */
+    PyObject *persistent_id_attr; /* instance attribute, can be NULL */
     PyObject *dispatch_table;   /* private dispatch_table, can be NULL */
     PyObject *reducer_override; /* hook for invoking user-defined callbacks
                                    instead of save_global when pickling
@@ -654,6 +655,7 @@ typedef struct UnpicklerObject {
     size_t memo_len;        /* Number of objects in the memo */
 
     PyObject *persistent_load;  /* persistent_load() method, can be NULL. */
+    PyObject *persistent_load_attr;  /* instance attribute, can be NULL. */
 
     Py_buffer buffer;
     char *input_buffer;
@@ -1107,6 +1109,7 @@ _Pickler_New(PickleState *st)
 
     self->memo = memo;
     self->persistent_id = NULL;
+    self->persistent_id_attr = NULL;
     self->dispatch_table = NULL;
     self->reducer_override = NULL;
     self->write = NULL;
@@ -1287,6 +1290,10 @@ _Unpickler_ReadFromFile(UnpicklerObject *self, Py_ssize_t n)
             else {
                 read_size = _Unpickler_SetStringInput(self, data);
                 Py_DECREF(data);
+                if (read_size < 0) {
+                    return -1;
+                }
+
                 self->prefetched_idx = 0;
                 if (n <= read_size)
                     return n;
@@ -1601,6 +1608,7 @@ _Unpickler_New(PyObject *module)
     self->memo_size = MEMO_SIZE;
     self->memo_len = 0;
     self->persistent_load = NULL;
+    self->persistent_load_attr = NULL;
     memset(&self->buffer, 0, sizeof(Py_buffer));
     self->input_buffer = NULL;
     self->input_line = NULL;
@@ -1807,8 +1815,7 @@ get_dotted_path(PyObject *obj, PyObject *name)
 {
     PyObject *dotted_path;
     Py_ssize_t i, n;
-    _Py_DECLARE_STR(dot, ".");
-    dotted_path = PyUnicode_Split(name, &_Py_STR(dot), -1);
+    dotted_path = PyUnicode_Split(name, _Py_LATIN1_CHR('.'), -1);
     if (dotted_path == NULL)
         return NULL;
     n = PyList_GET_SIZE(dotted_path);
@@ -1818,10 +1825,10 @@ get_dotted_path(PyObject *obj, PyObject *name)
         if (_PyUnicode_EqualToASCIIString(subpath, "<locals>")) {
             if (obj == NULL)
                 PyErr_Format(PyExc_AttributeError,
-                             "Can't pickle local object %R", name);
+                             "Can't get local object %R", name);
             else
                 PyErr_Format(PyExc_AttributeError,
-                             "Can't pickle local attribute %R on %R", name, obj);
+                             "Can't get local attribute %R on %R", name, obj);
             Py_DECREF(dotted_path);
             return NULL;
         }
@@ -2508,7 +2515,7 @@ save_picklebuffer(PickleState *st, PicklerObject *self, PyObject *obj)
 {
     if (self->proto < 5) {
         PyErr_SetString(st->PicklingError,
-                        "PickleBuffer can only pickled with protocol >= 5");
+                        "PickleBuffer can only be pickled with protocol >= 5");
         return -1;
     }
     const Py_buffer* view = PyPickleBuffer_GetBuffer(obj);
@@ -3124,6 +3131,7 @@ batch_dict(PickleState *state, PicklerObject *self, PyObject *iter)
             if (!PyTuple_Check(obj) || PyTuple_Size(obj) != 2) {
                 PyErr_SetString(PyExc_TypeError, "dict items "
                                 "iterator must return 2-tuples");
+                Py_DECREF(obj);
                 return -1;
             }
             i = save(state, self, PyTuple_GET_ITEM(obj, 0), 0);
@@ -3593,7 +3601,6 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
     PyObject *module = NULL;
     PyObject *parent = NULL;
     PyObject *dotted_path = NULL;
-    PyObject *lastname = NULL;
     PyObject *cls;
     int status = 0;
 
@@ -3634,10 +3641,7 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
                      obj, module_name);
         goto error;
     }
-    lastname = Py_NewRef(PyList_GET_ITEM(dotted_path,
-                         PyList_GET_SIZE(dotted_path) - 1));
     cls = get_deep_attribute(module, dotted_path, &parent);
-    Py_CLEAR(dotted_path);
     if (cls == NULL) {
         PyErr_Format(st->PicklingError,
                      "Can't pickle %R: attribute lookup %S on %S failed",
@@ -3667,34 +3671,24 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
         if (extension_key == NULL) {
             goto error;
         }
-        code_obj = PyDict_GetItemWithError(st->extension_registry,
-                                           extension_key);
+        if (PyDict_GetItemRef(st->extension_registry, extension_key, &code_obj) < 0) {
+            Py_DECREF(extension_key);
+            goto error;
+        }
         Py_DECREF(extension_key);
-        /* The object is not registered in the extension registry.
-           This is the most likely code path. */
         if (code_obj == NULL) {
-            if (PyErr_Occurred()) {
-                goto error;
-            }
+            /* The object is not registered in the extension registry.
+               This is the most likely code path. */
             goto gen_global;
         }
 
-        /* XXX: pickle.py doesn't check neither the type, nor the range
-           of the value returned by the extension_registry. It should for
-           consistency. */
-
-        /* Verify code_obj has the right type and value. */
-        if (!PyLong_Check(code_obj)) {
-            PyErr_Format(st->PicklingError,
-                         "Can't pickle %R: extension code %R isn't an integer",
-                         obj, code_obj);
-            goto error;
-        }
-        code = PyLong_AS_LONG(code_obj);
+        code = PyLong_AsLong(code_obj);
+        Py_DECREF(code_obj);
         if (code <= 0 || code > 0x7fffffffL) {
+            /* Should never happen in normal circumstances, since the type and
+               the value of the code are checked in copyreg.add_extension(). */
             if (!PyErr_Occurred())
-                PyErr_Format(st->PicklingError, "Can't pickle %R: extension "
-                             "code %ld is out of range", obj, code);
+                PyErr_Format(PyExc_RuntimeError, "extension code %ld is out of range", code);
             goto error;
         }
 
@@ -3725,7 +3719,10 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
     else {
   gen_global:
         if (parent == module) {
-            Py_SETREF(global_name, Py_NewRef(lastname));
+            Py_SETREF(global_name,
+                Py_NewRef(PyList_GET_ITEM(dotted_path,
+                                          PyList_GET_SIZE(dotted_path) - 1)));
+            Py_CLEAR(dotted_path);
         }
         if (self->proto >= 4) {
             const char stack_global_op = STACK_GLOBAL;
@@ -3738,20 +3735,30 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
             if (_Pickler_Write(self, &stack_global_op, 1) < 0)
                 goto error;
         }
-        else if (parent != module) {
-            PyObject *reduce_value = Py_BuildValue("(O(OO))",
-                                        st->getattr, parent, lastname);
-            if (reduce_value == NULL)
-                goto error;
-            status = save_reduce(st, self, reduce_value, NULL);
-            Py_DECREF(reduce_value);
-            if (status < 0)
-                goto error;
-        }
         else {
             /* Generate a normal global opcode if we are using a pickle
                protocol < 4, or if the object is not registered in the
-               extension registry. */
+               extension registry.
+
+               Objects with multi-part __qualname__ are represented as
+               getattr(getattr(..., attrname1), attrname2). */
+            const char mark_op = MARK;
+            const char tupletwo_op = (self->proto < 2) ? TUPLE : TUPLE2;
+            const char reduce_op = REDUCE;
+            Py_ssize_t i;
+            if (dotted_path) {
+                if (PyList_GET_SIZE(dotted_path) > 1) {
+                    Py_SETREF(global_name, Py_NewRef(PyList_GET_ITEM(dotted_path, 0)));
+                }
+                for (i = 1; i < PyList_GET_SIZE(dotted_path); i++) {
+                    if (save(st, self, st->getattr, 0) < 0 ||
+                        (self->proto < 2 && _Pickler_Write(self, &mark_op, 1) < 0))
+                    {
+                        goto error;
+                    }
+                }
+            }
+
             PyObject *encoded;
             PyObject *(*unicode_encoder)(PyObject *);
 
@@ -3813,6 +3820,17 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
             Py_DECREF(encoded);
             if (_Pickler_Write(self, "\n", 1) < 0)
                 goto error;
+
+            if (dotted_path) {
+                for (i = 1; i < PyList_GET_SIZE(dotted_path); i++) {
+                    if (save(st, self, PyList_GET_ITEM(dotted_path, i), 0) < 0 ||
+                        _Pickler_Write(self, &tupletwo_op, 1) < 0 ||
+                        _Pickler_Write(self, &reduce_op, 1) < 0)
+                    {
+                        goto error;
+                    }
+                }
+            }
         }
         /* Memoize the object. */
         if (memo_put(st, self, obj) < 0)
@@ -3828,7 +3846,6 @@ save_global(PickleState *st, PicklerObject *self, PyObject *obj,
     Py_XDECREF(module);
     Py_XDECREF(parent);
     Py_XDECREF(dotted_path);
-    Py_XDECREF(lastname);
 
     return status;
 }
@@ -5008,6 +5025,33 @@ Pickler_set_memo(PicklerObject *self, PyObject *obj, void *Py_UNUSED(ignored))
     return -1;
 }
 
+static PyObject *
+Pickler_getattr(PyObject *self, PyObject *name)
+{
+    if (PyUnicode_Check(name)
+        && PyUnicode_EqualToUTF8(name, "persistent_id")
+        && ((PicklerObject *)self)->persistent_id_attr)
+    {
+        return Py_NewRef(((PicklerObject *)self)->persistent_id_attr);
+    }
+
+    return PyObject_GenericGetAttr(self, name);
+}
+
+static int
+Pickler_setattr(PyObject *self, PyObject *name, PyObject *value)
+{
+    if (PyUnicode_Check(name)
+        && PyUnicode_EqualToUTF8(name, "persistent_id"))
+    {
+        Py_XINCREF(value);
+        Py_XSETREF(((PicklerObject *)self)->persistent_id_attr, value);
+        return 0;
+    }
+
+    return PyObject_GenericSetAttr(self, name, value);
+}
+
 static PyMemberDef Pickler_members[] = {
     {"bin", Py_T_INT, offsetof(PicklerObject, bin)},
     {"fast", Py_T_INT, offsetof(PicklerObject, fast)},
@@ -5023,6 +5067,8 @@ static PyGetSetDef Pickler_getsets[] = {
 
 static PyType_Slot pickler_type_slots[] = {
     {Py_tp_dealloc, Pickler_dealloc},
+    {Py_tp_getattro, Pickler_getattr},
+    {Py_tp_setattro, Pickler_setattr},
     {Py_tp_methods, Pickler_methods},
     {Py_tp_members, Pickler_members},
     {Py_tp_getset, Pickler_getsets},
@@ -6525,11 +6571,13 @@ load_additems(PickleState *state, UnpicklerObject *self)
             if (result == NULL) {
                 Pdata_clear(self->stack, i + 1);
                 Py_SET_SIZE(self->stack, mark);
+                Py_DECREF(add_func);
                 return -1;
             }
             Py_DECREF(result);
         }
         Py_SET_SIZE(self->stack, mark);
+        Py_DECREF(add_func);
     }
 
     return 0;
@@ -6605,10 +6653,13 @@ load_build(PickleState *st, UnpicklerObject *self)
             /* normally the keys for instance attributes are
                interned.  we should try to do that here. */
             Py_INCREF(d_key);
-            if (PyUnicode_CheckExact(d_key))
-                PyUnicode_InternInPlace(&d_key);
+            if (PyUnicode_CheckExact(d_key)) {
+                PyInterpreterState *interp = _PyInterpreterState_GET();
+                _PyUnicode_InternMortal(interp, &d_key);
+            }
             if (PyObject_SetItem(dict, d_key, d_value) < 0) {
                 Py_DECREF(d_key);
+                Py_DECREF(dict);
                 goto error;
             }
             Py_DECREF(d_key);
@@ -7459,6 +7510,33 @@ Unpickler_set_memo(UnpicklerObject *self, PyObject *obj, void *Py_UNUSED(ignored
     return -1;
 }
 
+static PyObject *
+Unpickler_getattr(PyObject *self, PyObject *name)
+{
+    if (PyUnicode_Check(name)
+        && PyUnicode_EqualToUTF8(name, "persistent_load")
+        && ((UnpicklerObject *)self)->persistent_load_attr)
+    {
+        return Py_NewRef(((UnpicklerObject *)self)->persistent_load_attr);
+    }
+
+    return PyObject_GenericGetAttr(self, name);
+}
+
+static int
+Unpickler_setattr(PyObject *self, PyObject *name, PyObject *value)
+{
+    if (PyUnicode_Check(name)
+        && PyUnicode_EqualToUTF8(name, "persistent_load"))
+    {
+        Py_XINCREF(value);
+        Py_XSETREF(((UnpicklerObject *)self)->persistent_load_attr, value);
+        return 0;
+    }
+
+    return PyObject_GenericSetAttr(self, name, value);
+}
+
 static PyGetSetDef Unpickler_getsets[] = {
     {"memo", (getter)Unpickler_get_memo, (setter)Unpickler_set_memo},
     {NULL}
@@ -7467,6 +7545,8 @@ static PyGetSetDef Unpickler_getsets[] = {
 static PyType_Slot unpickler_type_slots[] = {
     {Py_tp_dealloc, Unpickler_dealloc},
     {Py_tp_doc, (char *)_pickle_Unpickler___init____doc__},
+    {Py_tp_getattro, Unpickler_getattr},
+    {Py_tp_setattro, Unpickler_setattr},
     {Py_tp_traverse, Unpickler_traverse},
     {Py_tp_clear, Unpickler_clear},
     {Py_tp_methods, Unpickler_methods},
diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
index bb0a0278c629d4..6cb610a12b59c6 100644
--- a/Modules/_sqlite/clinic/connection.c.h
+++ b/Modules/_sqlite/clinic/connection.c.h
@@ -844,7 +844,7 @@ pysqlite_connection_set_progress_handler(pysqlite_Connection *self, PyTypeObject
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(progress_handler), &_Py_ID(n), },
+        .ob_item = { &_Py_ID(progress_handler), _Py_LATIN1_CHR('n'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1866,4 +1866,4 @@ getconfig(pysqlite_Connection *self, PyObject *arg)
 #ifndef DESERIALIZE_METHODDEF
     #define DESERIALIZE_METHODDEF
 #endif /* !defined(DESERIALIZE_METHODDEF) */
-/*[clinic end generated code: output=7d41a178b7b2b683 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5d4d7e4abe17b164 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index fc03e4a085c179..62598ecc864120 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -958,6 +958,11 @@ step_callback(sqlite3_context *context, int argc, sqlite3_value **params)
     assert(ctx != NULL);
 
     aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
+    if (aggregate_instance == NULL) {
+        (void)PyErr_NoMemory();
+        set_sqlite_error(context, "unable to allocate SQLite aggregate context");
+        goto error;
+    }
     if (*aggregate_instance == NULL) {
         *aggregate_instance = PyObject_CallNoArgs(ctx->callable);
         if (!*aggregate_instance) {
diff --git a/Modules/_sqlite/util.c b/Modules/_sqlite/util.c
index 9e8613ef67916e..b0622e66928f47 100644
--- a/Modules/_sqlite/util.c
+++ b/Modules/_sqlite/util.c
@@ -134,6 +134,7 @@ _pysqlite_seterror(pysqlite_state *state, sqlite3 *db)
 
     /* Create and set the exception. */
     int extended_errcode = sqlite3_extended_errcode(db);
+    // sqlite3_errmsg() always returns an UTF-8 encoded message
     const char *errmsg = sqlite3_errmsg(db);
     raise_exception(exc_class, extended_errcode, errmsg);
     return extended_errcode;
diff --git a/Modules/_sre/clinic/sre.c.h b/Modules/_sre/clinic/sre.c.h
index 48336c7a2fca26..6479990d1a4065 100644
--- a/Modules/_sre/clinic/sre.c.h
+++ b/Modules/_sre/clinic/sre.c.h
@@ -976,6 +976,44 @@ PyDoc_STRVAR(_sre_SRE_Pattern___deepcopy____doc__,
 #define _SRE_SRE_PATTERN___DEEPCOPY___METHODDEF    \
     {"__deepcopy__", (PyCFunction)_sre_SRE_Pattern___deepcopy__, METH_O, _sre_SRE_Pattern___deepcopy____doc__},
 
+#if defined(Py_DEBUG)
+
+PyDoc_STRVAR(_sre_SRE_Pattern__fail_after__doc__,
+"_fail_after($self, count, exception, /)\n"
+"--\n"
+"\n"
+"For debugging.");
+
+#define _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF    \
+    {"_fail_after", _PyCFunction_CAST(_sre_SRE_Pattern__fail_after), METH_FASTCALL, _sre_SRE_Pattern__fail_after__doc__},
+
+static PyObject *
+_sre_SRE_Pattern__fail_after_impl(PatternObject *self, int count,
+                                  PyObject *exception);
+
+static PyObject *
+_sre_SRE_Pattern__fail_after(PatternObject *self, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    int count;
+    PyObject *exception;
+
+    if (!_PyArg_CheckPositional("_fail_after", nargs, 2, 2)) {
+        goto exit;
+    }
+    count = PyLong_AsInt(args[0]);
+    if (count == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    exception = args[1];
+    return_value = _sre_SRE_Pattern__fail_after_impl(self, count, exception);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(Py_DEBUG) */
+
 PyDoc_STRVAR(_sre_compile__doc__,
 "compile($module, /, pattern, flags, code, groups, groupindex,\n"
 "        indexgroup)\n"
@@ -1461,4 +1499,8 @@ _sre_SRE_Scanner_search(ScannerObject *self, PyTypeObject *cls, PyObject *const
     }
     return _sre_SRE_Scanner_search_impl(self, cls);
 }
-/*[clinic end generated code: output=c3e711f0b2f43d66 input=a9049054013a1b77]*/
+
+#ifndef _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF
+    #define _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF
+#endif /* !defined(_SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF) */
+/*[clinic end generated code: output=32f2528c7b5b6081 input=a9049054013a1b77]*/
diff --git a/Modules/_sre/sre.c b/Modules/_sre/sre.c
index c1eff63d921de9..7fbb59ef89abc8 100644
--- a/Modules/_sre/sre.c
+++ b/Modules/_sre/sre.c
@@ -267,6 +267,85 @@ data_stack_grow(SRE_STATE* state, Py_ssize_t size)
     return 0;
 }
 
+/* memory pool functions for SRE_REPEAT, this can avoid memory
+   leak when SRE(match) function terminates abruptly.
+   state->repeat_pool_used is a doubly-linked list, so that we
+   can remove a SRE_REPEAT node from it.
+   state->repeat_pool_unused is a singly-linked list, we put/get
+   node at the head. */
+static SRE_REPEAT *
+repeat_pool_malloc(SRE_STATE *state)
+{
+    SRE_REPEAT *repeat;
+
+    if (state->repeat_pool_unused) {
+        /* remove from unused pool (singly-linked list) */
+        repeat = state->repeat_pool_unused;
+        state->repeat_pool_unused = repeat->pool_next;
+    }
+    else {
+        repeat = PyMem_Malloc(sizeof(SRE_REPEAT));
+        if (!repeat) {
+            return NULL;
+        }
+    }
+
+    /* add to used pool (doubly-linked list) */
+    SRE_REPEAT *temp = state->repeat_pool_used;
+    if (temp) {
+        temp->pool_prev = repeat;
+    }
+    repeat->pool_prev = NULL;
+    repeat->pool_next = temp;
+    state->repeat_pool_used = repeat;
+
+    return repeat;
+}
+
+static void
+repeat_pool_free(SRE_STATE *state, SRE_REPEAT *repeat)
+{
+    SRE_REPEAT *prev = repeat->pool_prev;
+    SRE_REPEAT *next = repeat->pool_next;
+
+    /* remove from used pool (doubly-linked list) */
+    if (prev) {
+        prev->pool_next = next;
+    }
+    else {
+        state->repeat_pool_used = next;
+    }
+    if (next) {
+        next->pool_prev = prev;
+    }
+
+    /* add to unused pool (singly-linked list) */
+    repeat->pool_next = state->repeat_pool_unused;
+    state->repeat_pool_unused = repeat;
+}
+
+static void
+repeat_pool_clear(SRE_STATE *state)
+{
+    /* clear used pool */
+    SRE_REPEAT *next = state->repeat_pool_used;
+    state->repeat_pool_used = NULL;
+    while (next) {
+        SRE_REPEAT *temp = next;
+        next = temp->pool_next;
+        PyMem_Free(temp);
+    }
+
+    /* clear unused pool */
+    next = state->repeat_pool_unused;
+    state->repeat_pool_unused = NULL;
+    while (next) {
+        SRE_REPEAT *temp = next;
+        next = temp->pool_next;
+        PyMem_Free(temp);
+    }
+}
+
 /* generate 8-bit version */
 
 #define SRE_CHAR Py_UCS1
@@ -511,6 +590,11 @@ state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string,
     state->pos = start;
     state->endpos = end;
 
+#ifdef Py_DEBUG
+    state->fail_after_count = pattern->fail_after_count;
+    state->fail_after_exc = pattern->fail_after_exc; // borrowed ref
+#endif
+
     return string;
   err:
     /* We add an explicit cast here because MSVC has a bug when
@@ -533,6 +617,8 @@ state_fini(SRE_STATE* state)
     /* See above PyMem_Del for why we explicitly cast here. */
     PyMem_Free((void*) state->mark);
     state->mark = NULL;
+    /* SRE_REPEAT pool */
+    repeat_pool_clear(state);
 }
 
 /* calculate offset from start of string */
@@ -619,6 +705,9 @@ pattern_traverse(PatternObject *self, visitproc visit, void *arg)
     Py_VISIT(self->groupindex);
     Py_VISIT(self->indexgroup);
     Py_VISIT(self->pattern);
+#ifdef Py_DEBUG
+    Py_VISIT(self->fail_after_exc);
+#endif
     return 0;
 }
 
@@ -628,6 +717,9 @@ pattern_clear(PatternObject *self)
     Py_CLEAR(self->groupindex);
     Py_CLEAR(self->indexgroup);
     Py_CLEAR(self->pattern);
+#ifdef Py_DEBUG
+    Py_CLEAR(self->fail_after_exc);
+#endif
     return 0;
 }
 
@@ -690,7 +782,7 @@ _sre_SRE_Pattern_match_impl(PatternObject *self, PyTypeObject *cls,
     Py_ssize_t status;
     PyObject *match;
 
-    if (!state_init(&state, (PatternObject *)self, string, pos, endpos))
+    if (!state_init(&state, self, string, pos, endpos))
         return NULL;
 
     INIT_TRACE(&state);
@@ -1381,6 +1473,29 @@ _sre_SRE_Pattern___deepcopy__(PatternObject *self, PyObject *memo)
     return Py_NewRef(self);
 }
 
+#ifdef Py_DEBUG
+/*[clinic input]
+_sre.SRE_Pattern._fail_after
+
+    count: int
+    exception: object
+    /
+
+For debugging.
+[clinic start generated code]*/
+
+static PyObject *
+_sre_SRE_Pattern__fail_after_impl(PatternObject *self, int count,
+                                  PyObject *exception)
+/*[clinic end generated code: output=9a6bf12135ac50c2 input=ef80a45c66c5499d]*/
+{
+    self->fail_after_count = count;
+    Py_INCREF(exception);
+    Py_XSETREF(self->fail_after_exc, exception);
+    Py_RETURN_NONE;
+}
+#endif /* Py_DEBUG */
+
 static PyObject *
 pattern_repr(PatternObject *obj)
 {
@@ -1506,6 +1621,10 @@ _sre_compile_impl(PyObject *module, PyObject *pattern, int flags,
     self->pattern = NULL;
     self->groupindex = NULL;
     self->indexgroup = NULL;
+#ifdef Py_DEBUG
+    self->fail_after_count = -1;
+    self->fail_after_exc = NULL;
+#endif
 
     self->codesize = n;
 
@@ -1622,6 +1741,7 @@ _sre_template_impl(PyObject *module, PyObject *pattern, PyObject *template)
         }
         self->items[i].literal = Py_XNewRef(literal);
     }
+    PyObject_GC_Track(self);
     return (PyObject*) self;
 
 bad_template:
@@ -2216,6 +2336,8 @@ match_getindex(MatchObject* self, PyObject* index)
         return -1;
     }
 
+    // Check that i*2 cannot overflow to make static analyzers happy
+    assert(i <= SRE_MAXGROUPS);
     return i;
 }
 
@@ -2368,7 +2490,7 @@ _sre_SRE_Match_groupdict_impl(MatchObject *self, PyObject *default_value)
             goto exit;
         }
     }
-exit:
+exit:;
     Py_END_CRITICAL_SECTION();
 
     return result;
@@ -2601,7 +2723,8 @@ pattern_new_match(_sremodulestate* module_state,
         if (!match)
             return NULL;
 
-        match->pattern = (PatternObject*)Py_NewRef(pattern);
+        Py_INCREF(pattern);
+        match->pattern = pattern;
 
         match->string = Py_NewRef(state->string);
 
@@ -2737,7 +2860,7 @@ _sre_SRE_Scanner_match_impl(ScannerObject *self, PyTypeObject *cls)
         return NULL;
     }
 
-    match = pattern_new_match(module_state, (PatternObject*) self->pattern,
+    match = pattern_new_match(module_state, self->pattern,
                               state, status);
 
     if (status == 0)
@@ -2787,7 +2910,7 @@ _sre_SRE_Scanner_search_impl(ScannerObject *self, PyTypeObject *cls)
         return NULL;
     }
 
-    match = pattern_new_match(module_state, (PatternObject*) self->pattern,
+    match = pattern_new_match(module_state, self->pattern,
                               state, status);
 
     if (status == 0)
@@ -2823,7 +2946,8 @@ pattern_scanner(_sremodulestate *module_state,
         return NULL;
     }
 
-    scanner->pattern = Py_NewRef(self);
+    Py_INCREF(self);
+    scanner->pattern = self;
 
     PyObject_GC_Track(scanner);
     return (PyObject*) scanner;
@@ -3017,6 +3141,7 @@ static PyMethodDef pattern_methods[] = {
     _SRE_SRE_PATTERN_SCANNER_METHODDEF
     _SRE_SRE_PATTERN___COPY___METHODDEF
     _SRE_SRE_PATTERN___DEEPCOPY___METHODDEF
+    _SRE_SRE_PATTERN__FAIL_AFTER_METHODDEF
     {"__class_getitem__", Py_GenericAlias, METH_O|METH_CLASS,
      PyDoc_STR("See PEP 585")},
     {NULL, NULL}
diff --git a/Modules/_sre/sre.h b/Modules/_sre/sre.h
index 83d89d57b11199..42681c2addf3c2 100644
--- a/Modules/_sre/sre.h
+++ b/Modules/_sre/sre.h
@@ -34,6 +34,11 @@ typedef struct {
     int flags; /* flags used when compiling pattern source */
     PyObject *weakreflist; /* List of weak references */
     int isbytes; /* pattern type (1 - bytes, 0 - string, -1 - None) */
+#ifdef Py_DEBUG
+    /* for simulation of user interruption */
+    int fail_after_count;
+    PyObject *fail_after_exc;
+#endif
     /* pattern code */
     Py_ssize_t codesize;
     SRE_CODE code[1];
@@ -68,6 +73,9 @@ typedef struct SRE_REPEAT_T {
     const SRE_CODE* pattern; /* points to REPEAT operator arguments */
     const void* last_ptr; /* helper to check for infinite loops */
     struct SRE_REPEAT_T *prev; /* points to previous repeat context */
+    /* for SRE_REPEAT pool */
+    struct SRE_REPEAT_T *pool_prev;
+    struct SRE_REPEAT_T *pool_next;
 } SRE_REPEAT;
 
 typedef struct {
@@ -95,12 +103,19 @@ typedef struct {
     size_t data_stack_base;
     /* current repeat context */
     SRE_REPEAT *repeat;
+    /* SRE_REPEAT pool */
+    SRE_REPEAT *repeat_pool_used;
+    SRE_REPEAT *repeat_pool_unused;
     unsigned int sigcount;
+#ifdef Py_DEBUG
+    int fail_after_count;
+    PyObject *fail_after_exc;
+#endif
 } SRE_STATE;
 
 typedef struct {
     PyObject_HEAD
-    PyObject* pattern;
+    PatternObject* pattern;
     SRE_STATE state;
     int executing;
 } ScannerObject;
diff --git a/Modules/_sre/sre_lib.h b/Modules/_sre/sre_lib.h
index 97fbb0a75e54b6..af4bfc56083bcb 100644
--- a/Modules/_sre/sre_lib.h
+++ b/Modules/_sre/sre_lib.h
@@ -560,13 +560,28 @@ typedef struct {
     Py_ssize_t last_ctx_pos;
 } SRE(match_context);
 
-#define MAYBE_CHECK_SIGNALS                                        \
+#define _MAYBE_CHECK_SIGNALS                                       \
     do {                                                           \
         if ((0 == (++sigcount & 0xfff)) && PyErr_CheckSignals()) { \
             RETURN_ERROR(SRE_ERROR_INTERRUPTED);                   \
         }                                                          \
     } while (0)
 
+#ifdef Py_DEBUG
+# define MAYBE_CHECK_SIGNALS                                       \
+    do {                                                           \
+        _MAYBE_CHECK_SIGNALS;                                      \
+        if (state->fail_after_count >= 0) {                        \
+            if (state->fail_after_count-- == 0) {                  \
+                PyErr_SetNone(state->fail_after_exc);              \
+                RETURN_ERROR(SRE_ERROR_INTERRUPTED);               \
+            }                                                      \
+        }                                                          \
+    } while (0)
+#else
+# define MAYBE_CHECK_SIGNALS _MAYBE_CHECK_SIGNALS
+#endif /* Py_DEBUG */
+
 #ifdef HAVE_COMPUTED_GOTOS
     #ifndef USE_COMPUTED_GOTOS
     #define USE_COMPUTED_GOTOS 1
@@ -1120,12 +1135,9 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                    pattern[1], pattern[2]));
 
             /* install new repeat context */
-            /* TODO(https://github.com/python/cpython/issues/67877): Fix this
-             * potential memory leak. */
-            ctx->u.rep = (SRE_REPEAT*) PyMem_Malloc(sizeof(*ctx->u.rep));
+            ctx->u.rep = repeat_pool_malloc(state);
             if (!ctx->u.rep) {
-                PyErr_NoMemory();
-                RETURN_FAILURE;
+                RETURN_ERROR(SRE_ERROR_MEMORY);
             }
             ctx->u.rep->count = -1;
             ctx->u.rep->pattern = pattern;
@@ -1136,7 +1148,7 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
             state->ptr = ptr;
             DO_JUMP(JUMP_REPEAT, jump_repeat, pattern+pattern[0]);
             state->repeat = ctx->u.rep->prev;
-            PyMem_Free(ctx->u.rep);
+            repeat_pool_free(state, ctx->u.rep);
 
             if (ret) {
                 RETURN_ON_ERROR(ret);
@@ -1294,6 +1306,17 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                pointer */
             state->ptr = ptr;
 
+            /* Set state->repeat to non-NULL */
+            ctx->u.rep = repeat_pool_malloc(state);
+            if (!ctx->u.rep) {
+                RETURN_ERROR(SRE_ERROR_MEMORY);
+            }
+            ctx->u.rep->count = -1;
+            ctx->u.rep->pattern = NULL;
+            ctx->u.rep->prev = state->repeat;
+            ctx->u.rep->last_ptr = NULL;
+            state->repeat = ctx->u.rep;
+
             /* Initialize Count to 0 */
             ctx->count = 0;
 
@@ -1308,6 +1331,9 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                 }
                 else {
                     state->ptr = ptr;
+                    /* Restore state->repeat */
+                    state->repeat = ctx->u.rep->prev;
+                    repeat_pool_free(state, ctx->u.rep);
                     RETURN_FAILURE;
                 }
             }
@@ -1380,6 +1406,10 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
                 }
             }
 
+            /* Restore state->repeat */
+            state->repeat = ctx->u.rep->prev;
+            repeat_pool_free(state, ctx->u.rep);
+
             /* Evaluate Tail */
             /* Jump to end of pattern indicated by skip, and then skip
                the SUCCESS op code that follows it. */
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 9d50b576ba337f..8d72779fd63a46 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -51,7 +51,6 @@
             PySSL_BEGIN_ALLOW_THREADS_S(_save);
 #define PySSL_END_ALLOW_THREADS PySSL_END_ALLOW_THREADS_S(_save); }
 
-
 #if defined(HAVE_POLL_H)
 #include <poll.h>
 #elif defined(HAVE_SYS_POLL_H)
@@ -371,9 +370,6 @@ class _ssl.SSLSession "PySSLSession *" "get_state_type(type)->PySSLSession_Type"
 
 static int PySSL_select(PySocketSockObject *s, int writing, PyTime_t timeout);
 
-static int PySSL_set_owner(PySSLSocket *, PyObject *, void *);
-static int PySSL_set_session(PySSLSocket *, PyObject *, void *);
-
 typedef enum {
     SOCKET_IS_NONBLOCKING,
     SOCKET_IS_BLOCKING,
@@ -611,6 +607,7 @@ PySSL_SetError(PySSLSocket *sslsock, const char *filename, int lineno)
     _sslmodulestate *state = get_state_sock(sslsock);
     type = state->PySSLErrorObject;
 
+    // ERR functions are thread local, no need to lock them.
     e = ERR_peek_last_error();
 
     if (sslsock->ssl != NULL) {
@@ -664,6 +661,11 @@ PySSL_SetError(PySSLSocket *sslsock, const char *filename, int lineno)
                         ERR_GET_REASON(e) == SSL_R_CERTIFICATE_VERIFY_FAILED) {
                     type = state->PySSLCertVerificationErrorObject;
                 }
+                if (ERR_GET_LIB(e) == ERR_LIB_SYS) {
+                    // A system error is being reported; reason is set to errno
+                    errno = ERR_GET_REASON(e);
+                    return PyErr_SetFromErrno(PyExc_OSError);
+                }
                 p = PY_SSL_ERROR_SYSCALL;
             }
             break;
@@ -689,6 +691,11 @@ PySSL_SetError(PySSLSocket *sslsock, const char *filename, int lineno)
                 errstr = "EOF occurred in violation of protocol";
             }
 #endif
+            if (ERR_GET_LIB(e) == ERR_LIB_SYS) {
+                // A system error is being reported; reason is set to errno
+                errno = ERR_GET_REASON(e);
+                return PyErr_SetFromErrno(PyExc_OSError);
+            }
             break;
         }
         default:
@@ -921,13 +928,13 @@ newPySSLSocket(PySSLContext *sslctx, PySocketSockObject *sock,
         }
     }
     if (owner && owner != Py_None) {
-        if (PySSL_set_owner(self, owner, NULL) == -1) {
+        if (_ssl__SSLSocket_owner_set(self, owner, NULL) == -1) {
             Py_DECREF(self);
             return NULL;
         }
     }
     if (session && session != Py_None) {
-        if (PySSL_set_session(self, session, NULL) == -1) {
+        if (_ssl__SSLSocket_session_set(self, session, NULL) == -1) {
             Py_DECREF(self);
             return NULL;
         }
@@ -940,12 +947,13 @@ newPySSLSocket(PySSLContext *sslctx, PySocketSockObject *sock,
 /* SSL object methods */
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.do_handshake
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_do_handshake_impl(PySSLSocket *self)
-/*[clinic end generated code: output=6c0898a8936548f6 input=d2d737de3df018c8]*/
+/*[clinic end generated code: output=6c0898a8936548f6 input=65619a7a4bea3176]*/
 {
     int ret;
     _PySSLError err;
@@ -1814,6 +1822,7 @@ _ssl__test_decode_cert_impl(PyObject *module, PyObject *path)
 
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.getpeercert
     der as binary_mode: bool = False
     /
@@ -1831,7 +1840,7 @@ return the certificate even if it wasn't validated.
 
 static PyObject *
 _ssl__SSLSocket_getpeercert_impl(PySSLSocket *self, int binary_mode)
-/*[clinic end generated code: output=1f0ab66dfb693c88 input=c0fbe802e57629b7]*/
+/*[clinic end generated code: output=1f0ab66dfb693c88 input=e35af55fa5f9bab8]*/
 {
     int verification;
     X509 *peer_cert;
@@ -1861,13 +1870,14 @@ _ssl__SSLSocket_getpeercert_impl(PySSLSocket *self, int binary_mode)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.get_verified_chain
 
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_get_verified_chain_impl(PySSLSocket *self)
-/*[clinic end generated code: output=802421163cdc3110 input=5fb0714f77e2bd51]*/
+/*[clinic end generated code: output=802421163cdc3110 input=83035fe238ec057b]*/
 {
     /* borrowed reference */
     STACK_OF(X509) *chain = SSL_get0_verified_chain(self->ssl);
@@ -1878,13 +1888,14 @@ _ssl__SSLSocket_get_verified_chain_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.get_unverified_chain
 
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_get_unverified_chain_impl(PySSLSocket *self)
-/*[clinic end generated code: output=5acdae414e13f913 input=78c33c360c635cb5]*/
+/*[clinic end generated code: output=5acdae414e13f913 input=079f8ff5c205cb3b]*/
 {
     PyObject *retval;
     /* borrowed reference */
@@ -2014,12 +2025,13 @@ cipher_to_dict(const SSL_CIPHER *cipher)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.shared_ciphers
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_shared_ciphers_impl(PySSLSocket *self)
-/*[clinic end generated code: output=3d174ead2e42c4fd input=0bfe149da8fe6306]*/
+/*[clinic end generated code: output=3d174ead2e42c4fd input=869645271e3bc6d0]*/
 {
     STACK_OF(SSL_CIPHER) *server_ciphers;
     STACK_OF(SSL_CIPHER) *client_ciphers;
@@ -2063,12 +2075,13 @@ _ssl__SSLSocket_shared_ciphers_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.cipher
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_cipher_impl(PySSLSocket *self)
-/*[clinic end generated code: output=376417c16d0e5815 input=548fb0e27243796d]*/
+/*[clinic end generated code: output=376417c16d0e5815 input=39e180269a36f486]*/
 {
     const SSL_CIPHER *current;
 
@@ -2081,12 +2094,13 @@ _ssl__SSLSocket_cipher_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.version
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_version_impl(PySSLSocket *self)
-/*[clinic end generated code: output=178aed33193b2cdb input=900186a503436fd6]*/
+/*[clinic end generated code: output=178aed33193b2cdb input=2732bc3f7f597d09]*/
 {
     const char *version;
 
@@ -2103,12 +2117,13 @@ _ssl__SSLSocket_version_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.selected_alpn_protocol
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLSocket_selected_alpn_protocol_impl(PySSLSocket *self)
-/*[clinic end generated code: output=ec33688b303d250f input=442de30e35bc2913]*/
+/*[clinic end generated code: output=ec33688b303d250f input=f0b53506c9acdf8c]*/
 {
     const unsigned char *out;
     unsigned int outlen;
@@ -2146,13 +2161,35 @@ _ssl__SSLSocket_compression_impl(PySSLSocket *self)
 #endif
 }
 
-static PySSLContext *PySSL_get_context(PySSLSocket *self, void *closure) {
-    return (PySSLContext*)Py_NewRef(self->ctx);
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.context
+
+This changes the context associated with the SSLSocket.
+
+This is typically used from within a callback function set by the sni_callback
+on the SSLContext to change the certificate information associated with the
+SSLSocket before the cryptographic exchange handshake messages.
+[clinic start generated code]*/
+
+static PyObject *
+_ssl__SSLSocket_context_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=d23e82f72f32e3d7 input=7cbb97407c2ace30]*/
+{
+    return Py_NewRef(self->ctx);
 }
 
-static int PySSL_set_context(PySSLSocket *self, PyObject *value,
-                                   void *closure) {
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLSocket.context
+[clinic start generated code]*/
 
+static int
+_ssl__SSLSocket_context_set_impl(PySSLSocket *self, PyObject *value)
+/*[clinic end generated code: output=6b0a6cc5cf33d9fe input=48ece77724fd9dd4]*/
+{
     if (PyObject_TypeCheck(value, self->ctx->state->PySSLContext_Type)) {
         Py_SETREF(self->ctx, (PySSLContext *)Py_NewRef(value));
         SSL_set_SSL_CTX(self->ssl, self->ctx->ctx);
@@ -2169,37 +2206,51 @@ static int PySSL_set_context(PySSLSocket *self, PyObject *value,
     return 0;
 }
 
-PyDoc_STRVAR(PySSL_set_context_doc,
-"_setter_context(ctx)\n\
-\
-This changes the context associated with the SSLSocket. This is typically\n\
-used from within a callback function set by the sni_callback\n\
-on the SSLContext to change the certificate information associated with the\n\
-SSLSocket before the cryptographic exchange handshake messages\n");
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.server_side
 
+Whether this is a server-side socket.
+[clinic start generated code]*/
 
 static PyObject *
-PySSL_get_server_side(PySSLSocket *self, void *c)
+_ssl__SSLSocket_server_side_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=ae51e372489148e3 input=b09b320510bc7cae]*/
 {
     return PyBool_FromLong(self->socket_type == PY_SSL_SERVER);
 }
 
-PyDoc_STRVAR(PySSL_get_server_side_doc,
-"Whether this is a server-side socket.");
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.server_hostname
+
+The currently set server hostname (for SNI).
+[clinic start generated code]*/
 
 static PyObject *
-PySSL_get_server_hostname(PySSLSocket *self, void *c)
+_ssl__SSLSocket_server_hostname_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=1f40ea5a076de8e7 input=55d12a1dc6634b08]*/
 {
     if (self->server_hostname == NULL)
         Py_RETURN_NONE;
     return Py_NewRef(self->server_hostname);
 }
 
-PyDoc_STRVAR(PySSL_get_server_hostname_doc,
-"The currently set server hostname (for SNI).");
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.owner
+
+The Python-level owner of this object.
+
+Passed as "self" in servername callback.
+[clinic start generated code]*/
 
 static PyObject *
-PySSL_get_owner(PySSLSocket *self, void *c)
+_ssl__SSLSocket_owner_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=1f278cb930382927 input=978a8382d9c25c92]*/
 {
     if (self->owner == NULL) {
         Py_RETURN_NONE;
@@ -2211,8 +2262,15 @@ PySSL_get_owner(PySSLSocket *self, void *c)
     return owner;
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLSocket.owner
+[clinic start generated code]*/
+
 static int
-PySSL_set_owner(PySSLSocket *self, PyObject *value, void *c)
+_ssl__SSLSocket_owner_set_impl(PySSLSocket *self, PyObject *value)
+/*[clinic end generated code: output=2e3924498f2b6cde input=875666fd32367a73]*/
 {
     Py_XSETREF(self->owner, PyWeakref_NewRef(value, NULL));
     if (self->owner == NULL)
@@ -2220,10 +2278,6 @@ PySSL_set_owner(PySSLSocket *self, PyObject *value, void *c)
     return 0;
 }
 
-PyDoc_STRVAR(PySSL_get_owner_doc,
-"The Python-level owner of this object.\
-Passed as \"self\" in servername callback.");
-
 static int
 PySSL_traverse(PySSLSocket *self, visitproc visit, void *arg)
 {
@@ -2245,6 +2299,17 @@ PySSL_dealloc(PySSLSocket *self)
     PyTypeObject *tp = Py_TYPE(self);
     PyObject_GC_UnTrack(self);
     if (self->ssl) {
+        // If we free the SSL socket object without having called SSL_shutdown,
+        // OpenSSL will invalidate the linked SSL session object. While this
+        // behavior is strictly RFC-compliant, it makes session reuse less
+        // likely and it would also break compatibility with older stdlib
+        // versions (which used an ugly workaround of duplicating the
+        // SSL_SESSION object).
+        // Therefore, we ensure the socket is marked as shutdown in any case.
+        //
+        // See elaborate explanation at
+        // https://github.com/python/cpython/pull/123249#discussion_r1766164530
+        SSL_set_shutdown(self->ssl, SSL_SENT_SHUTDOWN | SSL_get_shutdown(self->ssl));
         SSL_free(self->ssl);
     }
     Py_XDECREF(self->Socket);
@@ -2326,6 +2391,7 @@ PySSL_select(PySocketSockObject *s, int writing, PyTime_t timeout)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.write
     b: Py_buffer
     /
@@ -2337,7 +2403,7 @@ Returns the number of bytes written.
 
 static PyObject *
 _ssl__SSLSocket_write_impl(PySSLSocket *self, Py_buffer *b)
-/*[clinic end generated code: output=aa7a6be5527358d8 input=77262d994fe5100a]*/
+/*[clinic end generated code: output=aa7a6be5527358d8 input=967b5feeae641a26]*/
 {
     size_t count = 0;
     int retval;
@@ -2435,6 +2501,7 @@ _ssl__SSLSocket_write_impl(PySSLSocket *self, Py_buffer *b)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.pending
 
 Returns the number of already decrypted bytes available for read, pending on the connection.
@@ -2442,7 +2509,7 @@ Returns the number of already decrypted bytes available for read, pending on the
 
 static PyObject *
 _ssl__SSLSocket_pending_impl(PySSLSocket *self)
-/*[clinic end generated code: output=983d9fecdc308a83 input=2b77487d6dfd597f]*/
+/*[clinic end generated code: output=983d9fecdc308a83 input=32ab982a254e8866]*/
 {
     int count = 0;
     _PySSLError err;
@@ -2460,6 +2527,7 @@ _ssl__SSLSocket_pending_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.read
     size as len: Py_ssize_t
     [
@@ -2473,7 +2541,7 @@ Read up to size bytes from the SSL socket.
 static PyObject *
 _ssl__SSLSocket_read_impl(PySSLSocket *self, Py_ssize_t len,
                           int group_right_1, Py_buffer *buffer)
-/*[clinic end generated code: output=49b16e6406023734 input=ec48bf622be1c4a1]*/
+/*[clinic end generated code: output=49b16e6406023734 input=80ed30436df01a71]*/
 {
     PyObject *dest = NULL;
     char *mem;
@@ -2602,6 +2670,7 @@ _ssl__SSLSocket_read_impl(PySSLSocket *self, Py_ssize_t len,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.shutdown
 
 Does the SSL shutdown handshake with the remote end.
@@ -2609,7 +2678,7 @@ Does the SSL shutdown handshake with the remote end.
 
 static PyObject *
 _ssl__SSLSocket_shutdown_impl(PySSLSocket *self)
-/*[clinic end generated code: output=ca1aa7ed9d25ca42 input=11d39e69b0a2bf4a]*/
+/*[clinic end generated code: output=ca1aa7ed9d25ca42 input=98d9635cd4e16514]*/
 {
     _PySSLError err;
     int sockstate, nonblocking, ret;
@@ -2721,6 +2790,7 @@ _ssl__SSLSocket_shutdown_impl(PySSLSocket *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.get_channel_binding
    cb_type: str = "tls-unique"
 
@@ -2734,7 +2804,7 @@ Only 'tls-unique' channel binding data from RFC 5929 is supported.
 static PyObject *
 _ssl__SSLSocket_get_channel_binding_impl(PySSLSocket *self,
                                          const char *cb_type)
-/*[clinic end generated code: output=34bac9acb6a61d31 input=08b7e43b99c17d41]*/
+/*[clinic end generated code: output=34bac9acb6a61d31 input=e008004fc08744db]*/
 {
     char buf[PySSL_CB_MAXLEN];
     size_t len;
@@ -2766,6 +2836,7 @@ _ssl__SSLSocket_get_channel_binding_impl(PySSLSocket *self,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLSocket.verify_client_post_handshake
 
 Initiate TLS 1.3 post-handshake authentication
@@ -2773,7 +2844,7 @@ Initiate TLS 1.3 post-handshake authentication
 
 static PyObject *
 _ssl__SSLSocket_verify_client_post_handshake_impl(PySSLSocket *self)
-/*[clinic end generated code: output=532147f3b1341425 input=6bfa874810a3d889]*/
+/*[clinic end generated code: output=532147f3b1341425 input=42b5bb1f0981eda1]*/
 {
 #ifdef TLS1_3_VERSION
     int err = SSL_verify_client_post_handshake(self->ssl);
@@ -2789,70 +2860,31 @@ _ssl__SSLSocket_verify_client_post_handshake_impl(PySSLSocket *self)
 #endif
 }
 
-static SSL_SESSION*
-_ssl_session_dup(SSL_SESSION *session) {
-    SSL_SESSION *newsession = NULL;
-    int slen;
-    unsigned char *senc = NULL, *p;
-    const unsigned char *const_p;
-
-    if (session == NULL) {
-        PyErr_SetString(PyExc_ValueError, "Invalid session");
-        goto error;
-    }
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.session
 
-    /* get length */
-    slen = i2d_SSL_SESSION(session, NULL);
-    if (slen == 0 || slen > 0xFF00) {
-        PyErr_SetString(PyExc_ValueError, "i2d() failed");
-        goto error;
-    }
-    if ((senc = PyMem_Malloc(slen)) == NULL) {
-        PyErr_NoMemory();
-        goto error;
-    }
-    p = senc;
-    if (!i2d_SSL_SESSION(session, &p)) {
-        PyErr_SetString(PyExc_ValueError, "i2d() failed");
-        goto error;
-    }
-    const_p = senc;
-    newsession = d2i_SSL_SESSION(NULL, &const_p, slen);
-    if (newsession == NULL) {
-        PyErr_SetString(PyExc_ValueError, "d2i() failed");
-        goto error;
-    }
-    PyMem_Free(senc);
-    return newsession;
-  error:
-    if (senc != NULL) {
-        PyMem_Free(senc);
-    }
-    return NULL;
-}
+The underlying SSLSession object.
+[clinic start generated code]*/
 
 static PyObject *
-PySSL_get_session(PySSLSocket *self, void *closure) {
+_ssl__SSLSocket_session_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=a5cd5755b35da670 input=d427318604244bf8]*/
+{
     /* get_session can return sessions from a server-side connection,
      * it does not check for handshake done or client socket. */
     PySSLSession *pysess;
     SSL_SESSION *session;
 
-    /* duplicate session as workaround for session bug in OpenSSL 1.1.0,
-     * https://github.com/openssl/openssl/issues/1550 */
-    session = SSL_get0_session(self->ssl);  /* borrowed reference */
-    if (session == NULL) {
-        Py_RETURN_NONE;
-    }
-    if ((session = _ssl_session_dup(session)) == NULL) {
-        return NULL;
-    }
     session = SSL_get1_session(self->ssl);
     if (session == NULL) {
         Py_RETURN_NONE;
     }
     pysess = PyObject_GC_New(PySSLSession, self->ctx->state->PySSLSession_Type);
     if (pysess == NULL) {
+        // It's not possible for another thread to access this, so
+        // we don't need to lock it.
         SSL_SESSION_free(session);
         return NULL;
     }
@@ -2864,12 +2896,17 @@ PySSL_get_session(PySSLSocket *self, void *closure) {
     return (PyObject *)pysess;
 }
 
-static int PySSL_set_session(PySSLSocket *self, PyObject *value,
-                             void *closure)
-                              {
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLSocket.session
+[clinic start generated code]*/
+
+static int
+_ssl__SSLSocket_session_set_impl(PySSLSocket *self, PyObject *value)
+/*[clinic end generated code: output=a3fa2ddd7c2d54a2 input=5fa5f921640db98b]*/
+{
     PySSLSession *pysess;
-    SSL_SESSION *session;
-    int result;
 
     if (!Py_IS_TYPE(value, get_state_sock(self)->PySSLSession_Type)) {
         PyErr_SetString(PyExc_TypeError, "Value is not a SSLSession.");
@@ -2892,50 +2929,37 @@ static int PySSL_set_session(PySSLSocket *self, PyObject *value,
                         "Cannot set session after handshake.");
         return -1;
     }
-    /* duplicate session */
-    if ((session = _ssl_session_dup(pysess->session)) == NULL) {
-        return -1;
-    }
-    result = SSL_set_session(self->ssl, session);
-    /* free duplicate, SSL_set_session() bumps ref count */
-    SSL_SESSION_free(session);
-    if (result == 0) {
+
+    if (SSL_set_session(self->ssl, pysess->session) == 0) {
         _setSSLError(get_state_sock(self), NULL, 0, __FILE__, __LINE__);
         return -1;
     }
     return 0;
 }
 
-PyDoc_STRVAR(PySSL_set_session_doc,
-"_setter_session(session)\n\
-\
-Get / set SSLSession.");
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLSocket.session_reused
+
+Was the client session reused during handshake?
+[clinic start generated code]*/
 
 static PyObject *
-PySSL_get_session_reused(PySSLSocket *self, void *closure) {
-    if (SSL_session_reused(self->ssl)) {
-        Py_RETURN_TRUE;
-    } else {
-        Py_RETURN_FALSE;
-    }
+_ssl__SSLSocket_session_reused_get_impl(PySSLSocket *self)
+/*[clinic end generated code: output=c8916909bcb80893 input=cec8bfec73a4461e]*/
+{
+    int res = SSL_session_reused(self->ssl);
+    return res ? Py_True : Py_False;
 }
 
-PyDoc_STRVAR(PySSL_get_session_reused_doc,
-"Was the client session reused during handshake?");
-
 static PyGetSetDef ssl_getsetlist[] = {
-    {"context", (getter) PySSL_get_context,
-                (setter) PySSL_set_context, PySSL_set_context_doc},
-    {"server_side", (getter) PySSL_get_server_side, NULL,
-                    PySSL_get_server_side_doc},
-    {"server_hostname", (getter) PySSL_get_server_hostname, NULL,
-                        PySSL_get_server_hostname_doc},
-    {"owner", (getter) PySSL_get_owner, (setter) PySSL_set_owner,
-              PySSL_get_owner_doc},
-    {"session", (getter) PySSL_get_session,
-                (setter) PySSL_set_session, PySSL_set_session_doc},
-    {"session_reused", (getter) PySSL_get_session_reused, NULL,
-              PySSL_get_session_reused_doc},
+    _SSL__SSLSOCKET_CONTEXT_GETSETDEF
+    _SSL__SSLSOCKET_SERVER_SIDE_GETSETDEF
+    _SSL__SSLSOCKET_SERVER_HOSTNAME_GETSETDEF
+    _SSL__SSLSOCKET_OWNER_GETSETDEF
+    _SSL__SSLSOCKET_SESSION_GETSETDEF
+    _SSL__SSLSOCKET_SESSION_REUSED_GETSETDEF
     {NULL},            /* sentinel */
 };
 
@@ -2971,7 +2995,7 @@ static PyType_Spec PySSLSocket_spec = {
     .name = "_ssl._SSLSocket",
     .basicsize = sizeof(PySSLSocket),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE |
-              Py_TPFLAGS_HAVE_GC),
+              Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_DISALLOW_INSTANTIATION),
     .slots = PySSLSocket_slots,
 };
 
@@ -3008,6 +3032,7 @@ _set_verify_mode(PySSLContext *self, enum py_ssl_cert_requirements n)
 }
 
 /*[clinic input]
+@critical_section
 @classmethod
 _ssl._SSLContext.__new__
     protocol as proto_version: int
@@ -3016,7 +3041,7 @@ _ssl._SSLContext.__new__
 
 static PyObject *
 _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
-/*[clinic end generated code: output=2cf0d7a0741b6bd1 input=8d58a805b95fc534]*/
+/*[clinic end generated code: output=2cf0d7a0741b6bd1 input=6fc79e62ae9d143c]*/
 {
     PySSLContext *self;
     uint64_t options;
@@ -3086,6 +3111,10 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
         return NULL;
     }
 
+    // This is the constructor, no need to lock it, because
+    // no other thread can be touching this object yet.
+    // (Technically, we can't even lock if we wanted to, as the
+    // lock hasn't been initialized yet.)
     PySSL_BEGIN_ALLOW_THREADS
     ctx = SSL_CTX_new(method);
     PySSL_END_ALLOW_THREADS
@@ -3252,6 +3281,7 @@ context_dealloc(PySSLContext *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.set_ciphers
     cipherlist: str
     /
@@ -3259,7 +3289,7 @@ _ssl._SSLContext.set_ciphers
 
 static PyObject *
 _ssl__SSLContext_set_ciphers_impl(PySSLContext *self, const char *cipherlist)
-/*[clinic end generated code: output=3a3162f3557c0f3f input=a7ac931b9f3ca7fc]*/
+/*[clinic end generated code: output=3a3162f3557c0f3f input=40b583cded5c6ff9]*/
 {
     int ret = SSL_CTX_set_cipher_list(self->ctx, cipherlist);
     if (ret == 0) {
@@ -3275,12 +3305,13 @@ _ssl__SSLContext_set_ciphers_impl(PySSLContext *self, const char *cipherlist)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.get_ciphers
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLContext_get_ciphers_impl(PySSLContext *self)
-/*[clinic end generated code: output=a56e4d68a406dfc4 input=a2aadc9af89b79c5]*/
+/*[clinic end generated code: output=a56e4d68a406dfc4 input=d7fff51631a260ae]*/
 {
     SSL *ssl = NULL;
     STACK_OF(SSL_CIPHER) *sk = NULL;
@@ -3355,6 +3386,7 @@ _selectALPN_cb(SSL *s,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext._set_alpn_protocols
     protos: Py_buffer
     /
@@ -3363,7 +3395,7 @@ _ssl._SSLContext._set_alpn_protocols
 static PyObject *
 _ssl__SSLContext__set_alpn_protocols_impl(PySSLContext *self,
                                           Py_buffer *protos)
-/*[clinic end generated code: output=87599a7f76651a9b input=9bba964595d519be]*/
+/*[clinic end generated code: output=87599a7f76651a9b input=b5096b186e49287d]*/
 {
     if ((size_t)protos->len > UINT_MAX) {
         PyErr_Format(PyExc_OverflowError,
@@ -3373,25 +3405,34 @@ _ssl__SSLContext__set_alpn_protocols_impl(PySSLContext *self,
 
     PyMem_Free(self->alpn_protocols);
     self->alpn_protocols = PyMem_Malloc(protos->len);
-    if (!self->alpn_protocols)
+    if (!self->alpn_protocols) {
         return PyErr_NoMemory();
+    }
     memcpy(self->alpn_protocols, protos->buf, protos->len);
     self->alpn_protocols_len = (unsigned int)protos->len;
-
-    if (SSL_CTX_set_alpn_protos(self->ctx, self->alpn_protocols, self->alpn_protocols_len))
+    if (SSL_CTX_set_alpn_protos(self->ctx, self->alpn_protocols, self->alpn_protocols_len)) {
         return PyErr_NoMemory();
+    }
     SSL_CTX_set_alpn_select_cb(self->ctx, _selectALPN_cb, self);
 
     Py_RETURN_NONE;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.verify_mode
+[clinic start generated code]*/
+
 static PyObject *
-get_verify_mode(PySSLContext *self, void *c)
+_ssl__SSLContext_verify_mode_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=3e788736cc7229bc input=7e3c7f4454121d0a]*/
 {
     /* ignore SSL_VERIFY_CLIENT_ONCE and SSL_VERIFY_POST_HANDSHAKE */
     int mask = (SSL_VERIFY_NONE | SSL_VERIFY_PEER |
                 SSL_VERIFY_FAIL_IF_NO_PEER_CERT);
-    switch (SSL_CTX_get_verify_mode(self->ctx) & mask) {
+    int verify_mode = SSL_CTX_get_verify_mode(self->ctx);
+    switch (verify_mode & mask) {
     case SSL_VERIFY_NONE:
         return PyLong_FromLong(PY_SSL_CERT_NONE);
     case SSL_VERIFY_PEER:
@@ -3404,11 +3445,18 @@ get_verify_mode(PySSLContext *self, void *c)
     return NULL;
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.verify_mode
+[clinic start generated code]*/
+
 static int
-set_verify_mode(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_verify_mode_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=d698e16c58db3118 input=3ee60057c3a22378]*/
 {
     int n;
-    if (!PyArg_Parse(arg, "i", &n))
+    if (!PyArg_Parse(value, "i", &n))
         return -1;
     if (n == PY_SSL_CERT_NONE && self->check_hostname) {
         PyErr_SetString(PyExc_ValueError,
@@ -3419,8 +3467,15 @@ set_verify_mode(PySSLContext *self, PyObject *arg, void *c)
     return _set_verify_mode(self, n);
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.verify_flags
+[clinic start generated code]*/
+
 static PyObject *
-get_verify_flags(PySSLContext *self, void *c)
+_ssl__SSLContext_verify_flags_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=fbbf8ba28ad6e56e input=c1ec36d610b3f391]*/
 {
     X509_VERIFY_PARAM *param;
     unsigned long flags;
@@ -3430,13 +3485,20 @@ get_verify_flags(PySSLContext *self, void *c)
     return PyLong_FromUnsignedLong(flags);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.verify_flags
+[clinic start generated code]*/
+
 static int
-set_verify_flags(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_verify_flags_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=a3e3b2a0ce6c2e99 input=b2a0c42583d4f34e]*/
 {
     X509_VERIFY_PARAM *param;
     unsigned long new_flags, flags, set, clear;
 
-    if (!PyArg_Parse(arg, "k", &new_flags))
+    if (!PyArg_Parse(value, "k", &new_flags))
         return -1;
     param = SSL_CTX_get0_param(self->ctx);
     flags = X509_VERIFY_PARAM_get_flags(param);
@@ -3544,8 +3606,15 @@ set_min_max_proto_version(PySSLContext *self, PyObject *arg, int what)
     return 0;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.minimum_version
+[clinic start generated code]*/
+
 static PyObject *
-get_minimum_version(PySSLContext *self, void *c)
+_ssl__SSLContext_minimum_version_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=27fa8382276635ed input=6832821e7e974d40]*/
 {
     int v = SSL_CTX_get_min_proto_version(self->ctx);
     if (v == 0) {
@@ -3554,14 +3623,29 @@ get_minimum_version(PySSLContext *self, void *c)
     return PyLong_FromLong(v);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.minimum_version
+[clinic start generated code]*/
+
 static int
-set_minimum_version(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_minimum_version_set_impl(PySSLContext *self,
+                                          PyObject *value)
+/*[clinic end generated code: output=482e82f7372afb78 input=2c64724901a514b3]*/
 {
-    return set_min_max_proto_version(self, arg, 0);
+    return set_min_max_proto_version(self, value, 0);
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.maximum_version
+[clinic start generated code]*/
+
 static PyObject *
-get_maximum_version(PySSLContext *self, void *c)
+_ssl__SSLContext_maximum_version_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=889249475112826a input=2b9e4c2d45f16b14]*/
 {
     int v = SSL_CTX_get_max_proto_version(self->ctx);
     if (v == 0) {
@@ -3570,24 +3654,53 @@ get_maximum_version(PySSLContext *self, void *c)
     return PyLong_FromLong(v);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.maximum_version
+[clinic start generated code]*/
+
 static int
-set_maximum_version(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_maximum_version_set_impl(PySSLContext *self,
+                                          PyObject *value)
+/*[clinic end generated code: output=4c0eed3042ca20d5 input=fe27e9fbbeb73c89]*/
 {
-    return set_min_max_proto_version(self, arg, 1);
+    return set_min_max_proto_version(self, value, 1);
 }
 
-#ifdef TLS1_3_VERSION
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.num_tickets
+
+Control the number of TLSv1.3 session tickets.
+[clinic start generated code]*/
+
 static PyObject *
-get_num_tickets(PySSLContext *self, void *c)
+_ssl__SSLContext_num_tickets_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=3d06d016318846c9 input=1e2599a2e22564ff]*/
 {
-    return PyLong_FromSize_t(SSL_CTX_get_num_tickets(self->ctx));
+    // Clinic seems to be misbehaving when the comment is wrapped with in directive
+#if defined(TLS1_3_VERSION) && !defined(OPENSSL_NO_TLS1_3)
+    PyObject *res = PyLong_FromSize_t(SSL_CTX_get_num_tickets(self->ctx));
+    return res;
+#else
+    return 0;
+#endif
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.num_tickets
+[clinic start generated code]*/
+
 static int
-set_num_tickets(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_num_tickets_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=ced81b46f3beab09 input=6ef8067ac55607e7]*/
 {
     long num;
-    if (!PyArg_Parse(arg, "l", &num))
+    if (!PyArg_Parse(value, "l", &num))
         return -1;
     if (num < 0) {
         PyErr_SetString(PyExc_ValueError, "value must be non-negative");
@@ -3605,27 +3718,46 @@ set_num_tickets(PySSLContext *self, PyObject *arg, void *c)
     return 0;
 }
 
-PyDoc_STRVAR(PySSLContext_num_tickets_doc,
-"Control the number of TLSv1.3 session tickets");
-#endif /* TLS1_3_VERSION */
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.security_level
+
+The current security level.
+[clinic start generated code]*/
 
 static PyObject *
-get_security_level(PySSLContext *self, void *c)
+_ssl__SSLContext_security_level_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=56ece09e6a9572d0 input=2bdeecb57bb86e3f]*/
 {
-    return PyLong_FromLong(SSL_CTX_get_security_level(self->ctx));
+    PyObject *res = PyLong_FromLong(SSL_CTX_get_security_level(self->ctx));
+    return res;
 }
-PyDoc_STRVAR(PySSLContext_security_level_doc, "The current security level");
+
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.options
+[clinic start generated code]*/
 
 static PyObject *
-get_options(PySSLContext *self, void *c)
+_ssl__SSLContext_options_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=3dfa6a74837f525b input=f5a2805c7cda6f25]*/
 {
     uint64_t options = SSL_CTX_get_options(self->ctx);
     Py_BUILD_ASSERT(sizeof(unsigned long long) >= sizeof(options));
     return PyLong_FromUnsignedLongLong(options);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.options
+[clinic start generated code]*/
+
 static int
-set_options(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_options_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=92ca34731ece5dbb input=2b94bf789e9ae5dd]*/
 {
     PyObject *new_opts_obj;
     unsigned long long new_opts_arg;
@@ -3635,7 +3767,7 @@ set_options(PySSLContext *self, PyObject *arg, void *c)
         SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1_2 | SSL_OP_NO_TLSv1_3
     );
 
-    if (!PyArg_Parse(arg, "O!", &PyLong_Type, &new_opts_obj)) {
+    if (!PyArg_Parse(value, "O!", &PyLong_Type, &new_opts_obj)) {
         return -1;
     }
     new_opts_arg = PyLong_AsUnsignedLongLong(new_opts_obj);
@@ -3664,19 +3796,33 @@ set_options(PySSLContext *self, PyObject *arg, void *c)
     return 0;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext._host_flags
+[clinic start generated code]*/
+
 static PyObject *
-get_host_flags(PySSLContext *self, void *c)
+_ssl__SSLContext__host_flags_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=0f9db6654ce32582 input=8e3c49499eefd0e5]*/
 {
     return PyLong_FromUnsignedLong(self->hostflags);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext._host_flags
+[clinic start generated code]*/
+
 static int
-set_host_flags(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext__host_flags_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=1ed6f4027aaf2e3e input=28caf1fb9c32f6cb]*/
 {
     X509_VERIFY_PARAM *param;
     unsigned int new_flags = 0;
 
-    if (!PyArg_Parse(arg, "I", &new_flags))
+    if (!PyArg_Parse(value, "I", &new_flags))
         return -1;
 
     param = SSL_CTX_get0_param(self->ctx);
@@ -3685,20 +3831,35 @@ set_host_flags(PySSLContext *self, PyObject *arg, void *c)
     return 0;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.check_hostname
+[clinic start generated code]*/
+
 static PyObject *
-get_check_hostname(PySSLContext *self, void *c)
+_ssl__SSLContext_check_hostname_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=e046d6eeefc76063 input=1b8341e705f9ecf5]*/
 {
     return PyBool_FromLong(self->check_hostname);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.check_hostname
+[clinic start generated code]*/
+
 static int
-set_check_hostname(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_check_hostname_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=0e767b4784e7dc3f input=e6a771cb5919f74d]*/
 {
     int check_hostname;
-    if (!PyArg_Parse(arg, "p", &check_hostname))
+    if (!PyArg_Parse(value, "p", &check_hostname))
         return -1;
+    int verify_mode = check_hostname ? SSL_CTX_get_verify_mode(self->ctx) : 0;
     if (check_hostname &&
-            SSL_CTX_get_verify_mode(self->ctx) == SSL_VERIFY_NONE) {
+            verify_mode == SSL_VERIFY_NONE) {
         /* check_hostname = True sets verify_mode = CERT_REQUIRED */
         if (_set_verify_mode(self, PY_SSL_CERT_REQUIRED) == -1) {
             return -1;
@@ -3738,8 +3899,16 @@ set_post_handshake_auth(PySSLContext *self, PyObject *arg, void *c) {
 }
 #endif
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.protocol
+[clinic start generated code]*/
+
 static PyObject *
-get_protocol(PySSLContext *self, void *c) {
+_ssl__SSLContext_protocol_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=a9a48febc16cee22 input=c9f5fa1a2bd4b8a8]*/
+{
     return PyLong_FromLong(self->protocol);
 }
 
@@ -3853,6 +4022,7 @@ _password_callback(char *buf, int size, int rwflag, void *userdata)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.load_cert_chain
     certfile: object
     keyfile: object = None
@@ -3863,7 +4033,7 @@ _ssl._SSLContext.load_cert_chain
 static PyObject *
 _ssl__SSLContext_load_cert_chain_impl(PySSLContext *self, PyObject *certfile,
                                       PyObject *keyfile, PyObject *password)
-/*[clinic end generated code: output=9480bc1c380e2095 input=30bc7e967ea01a58]*/
+/*[clinic end generated code: output=9480bc1c380e2095 input=6c7c5e8b73e4264b]*/
 {
     PyObject *certfile_bytes = NULL, *keyfile_bytes = NULL;
     pem_password_cb *orig_passwd_cb = SSL_CTX_get_default_passwd_cb(self->ctx);
@@ -4057,6 +4227,7 @@ _add_ca_certs(PySSLContext *self, const void *data, Py_ssize_t len,
 
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.load_verify_locations
     cafile: object = None
     capath: object = None
@@ -4069,7 +4240,7 @@ _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
                                             PyObject *cafile,
                                             PyObject *capath,
                                             PyObject *cadata)
-/*[clinic end generated code: output=454c7e41230ca551 input=42ecfe258233e194]*/
+/*[clinic end generated code: output=454c7e41230ca551 input=b178852b41618414]*/
 {
     PyObject *cafile_bytes = NULL, *capath_bytes = NULL;
     const char *cafile_buf = NULL, *capath_buf = NULL;
@@ -4185,6 +4356,7 @@ _ssl__SSLContext_load_verify_locations_impl(PySSLContext *self,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.load_dh_params
     path as filepath: object
     /
@@ -4192,8 +4364,8 @@ _ssl._SSLContext.load_dh_params
 [clinic start generated code]*/
 
 static PyObject *
-_ssl__SSLContext_load_dh_params(PySSLContext *self, PyObject *filepath)
-/*[clinic end generated code: output=1c8e57a38e055af0 input=c8871f3c796ae1d6]*/
+_ssl__SSLContext_load_dh_params_impl(PySSLContext *self, PyObject *filepath)
+/*[clinic end generated code: output=dd74b3c524dd2723 input=832769a0734b8c4d]*/
 {
     FILE *f;
     DH *dh;
@@ -4226,6 +4398,7 @@ _ssl__SSLContext_load_dh_params(PySSLContext *self, PyObject *filepath)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext._wrap_socket
     sock: object(subclass_of="get_state_ctx(self)->Sock_Type")
     server_side: bool
@@ -4240,7 +4413,7 @@ static PyObject *
 _ssl__SSLContext__wrap_socket_impl(PySSLContext *self, PyObject *sock,
                                    int server_side, PyObject *hostname_obj,
                                    PyObject *owner, PyObject *session)
-/*[clinic end generated code: output=f103f238633940b4 input=700ca8fedff53994]*/
+/*[clinic end generated code: output=f103f238633940b4 input=eceadcee4434a06f]*/
 {
     char *hostname = NULL;
     PyObject *res;
@@ -4262,6 +4435,7 @@ _ssl__SSLContext__wrap_socket_impl(PySSLContext *self, PyObject *sock,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext._wrap_bio
     incoming: object(subclass_of="get_state_ctx(self)->PySSLMemoryBIO_Type", type="PySSLMemoryBIO *")
     outgoing: object(subclass_of="get_state_ctx(self)->PySSLMemoryBIO_Type", type="PySSLMemoryBIO *")
@@ -4278,7 +4452,7 @@ _ssl__SSLContext__wrap_bio_impl(PySSLContext *self, PySSLMemoryBIO *incoming,
                                 PySSLMemoryBIO *outgoing, int server_side,
                                 PyObject *hostname_obj, PyObject *owner,
                                 PyObject *session)
-/*[clinic end generated code: output=5c5d6d9b41f99332 input=a9205d097fd45a82]*/
+/*[clinic end generated code: output=5c5d6d9b41f99332 input=58277fc962a60182]*/
 {
     char *hostname = NULL;
     PyObject *res;
@@ -4299,12 +4473,13 @@ _ssl__SSLContext__wrap_bio_impl(PySSLContext *self, PySSLMemoryBIO *incoming,
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.session_stats
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLContext_session_stats_impl(PySSLContext *self)
-/*[clinic end generated code: output=0d96411c42893bfb input=7e0a81fb11102c8b]*/
+/*[clinic end generated code: output=0d96411c42893bfb input=db62af53004127a4]*/
 {
     int r;
     PyObject *value, *stats = PyDict_New();
@@ -4343,12 +4518,13 @@ _ssl__SSLContext_session_stats_impl(PySSLContext *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.set_default_verify_paths
 [clinic start generated code]*/
 
 static PyObject *
 _ssl__SSLContext_set_default_verify_paths_impl(PySSLContext *self)
-/*[clinic end generated code: output=0bee74e6e09deaaa input=35f3408021463d74]*/
+/*[clinic end generated code: output=0bee74e6e09deaaa input=939a88e78f634119]*/
 {
     int rc;
     Py_BEGIN_ALLOW_THREADS
@@ -4362,6 +4538,7 @@ _ssl__SSLContext_set_default_verify_paths_impl(PySSLContext *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.set_ecdh_curve
     name: object
     /
@@ -4369,8 +4546,8 @@ _ssl._SSLContext.set_ecdh_curve
 [clinic start generated code]*/
 
 static PyObject *
-_ssl__SSLContext_set_ecdh_curve(PySSLContext *self, PyObject *name)
-/*[clinic end generated code: output=23022c196e40d7d2 input=c2bafb6f6e34726b]*/
+_ssl__SSLContext_set_ecdh_curve_impl(PySSLContext *self, PyObject *name)
+/*[clinic end generated code: output=01081151ce0ecc45 input=039df032e666870e]*/
 {
     PyObject *name_bytes;
     int nid;
@@ -4504,8 +4681,22 @@ _servername_callback(SSL *s, int *al, void *args)
     return ret;
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl._SSLContext.sni_callback
+
+Set a callback that will be called when a server name is provided by the SSL/TLS client in the SNI extension.
+
+If the argument is None then the callback is disabled. The method is called
+with the SSLSocket, the server name as a string, and the SSLContext object.
+
+See RFC 6066 for details of the SNI extension.
+[clinic start generated code]*/
+
 static PyObject *
-get_sni_callback(PySSLContext *self, void *c)
+_ssl__SSLContext_sni_callback_get_impl(PySSLContext *self)
+/*[clinic end generated code: output=961e6575cdfaf036 input=9b2473c5e984cfe6]*/
 {
     PyObject *cb = self->set_sni_cb;
     if (cb == NULL) {
@@ -4514,8 +4705,15 @@ get_sni_callback(PySSLContext *self, void *c)
     return Py_NewRef(cb);
 }
 
+/*[clinic input]
+@critical_section
+@setter
+_ssl._SSLContext.sni_callback
+[clinic start generated code]*/
+
 static int
-set_sni_callback(PySSLContext *self, PyObject *arg, void *c)
+_ssl__SSLContext_sni_callback_set_impl(PySSLContext *self, PyObject *value)
+/*[clinic end generated code: output=b32736c6b891f61a input=c3c4ff33540b3c85]*/
 {
     if (self->protocol == PY_SSL_VERSION_TLS_CLIENT) {
         PyErr_SetString(PyExc_ValueError,
@@ -4523,17 +4721,17 @@ set_sni_callback(PySSLContext *self, PyObject *arg, void *c)
         return -1;
     }
     Py_CLEAR(self->set_sni_cb);
-    if (arg == Py_None) {
+    if (value == Py_None) {
         SSL_CTX_set_tlsext_servername_callback(self->ctx, NULL);
     }
     else {
-        if (!PyCallable_Check(arg)) {
+        if (!PyCallable_Check(value)) {
             SSL_CTX_set_tlsext_servername_callback(self->ctx, NULL);
             PyErr_SetString(PyExc_TypeError,
                             "not a callable object");
             return -1;
         }
-        self->set_sni_cb = Py_NewRef(arg);
+        self->set_sni_cb = Py_NewRef(value);
         SSL_CTX_set_tlsext_servername_callback(self->ctx, _servername_callback);
         SSL_CTX_set_tlsext_servername_arg(self->ctx, self);
     }
@@ -4584,14 +4782,8 @@ X509_STORE_get1_objects(X509_STORE *store)
 }
 #endif
 
-PyDoc_STRVAR(PySSLContext_sni_callback_doc,
-"Set a callback that will be called when a server name is provided by the SSL/TLS client in the SNI extension.\n\
-\n\
-If the argument is None then the callback is disabled. The method is called\n\
-with the SSLSocket, the server name as a string, and the SSLContext object.\n\
-See RFC 6066 for details of the SNI extension.");
-
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.cert_store_stats
 
 Returns quantities of loaded X.509 certificates.
@@ -4605,7 +4797,7 @@ been used at least once.
 
 static PyObject *
 _ssl__SSLContext_cert_store_stats_impl(PySSLContext *self)
-/*[clinic end generated code: output=5f356f4d9cca874d input=eb40dd0f6d0e40cf]*/
+/*[clinic end generated code: output=5f356f4d9cca874d input=d13c6e3f2b48539b]*/
 {
     X509_STORE *store;
     STACK_OF(X509_OBJECT) *objs;
@@ -4642,6 +4834,7 @@ _ssl__SSLContext_cert_store_stats_impl(PySSLContext *self)
 }
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.get_ca_certs
     binary_form: bool = False
 
@@ -4656,7 +4849,7 @@ been used at least once.
 
 static PyObject *
 _ssl__SSLContext_get_ca_certs_impl(PySSLContext *self, int binary_form)
-/*[clinic end generated code: output=0d58f148f37e2938 input=6887b5a09b7f9076]*/
+/*[clinic end generated code: output=0d58f148f37e2938 input=eb0592909c9ad6e7]*/
 {
     X509_STORE *store;
     STACK_OF(X509_OBJECT) *objs;
@@ -4757,7 +4950,9 @@ static unsigned int psk_client_callback(SSL *s,
         goto error;
     }
 
-    if (identity_len_ + 1 > max_identity_len || psk_len_ > max_psk_len) {
+    if ((size_t)identity_len_ + 1 > max_identity_len
+        || (size_t)psk_len_ > max_psk_len)
+    {
         Py_DECREF(result);
         goto error;
     }
@@ -4782,6 +4977,7 @@ static unsigned int psk_client_callback(SSL *s,
 #endif
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.set_psk_client_callback
     callback: object
 
@@ -4790,7 +4986,7 @@ _ssl._SSLContext.set_psk_client_callback
 static PyObject *
 _ssl__SSLContext_set_psk_client_callback_impl(PySSLContext *self,
                                               PyObject *callback)
-/*[clinic end generated code: output=0aba86f6ed75119e input=7627bae0e5ee7635]*/
+/*[clinic end generated code: output=0aba86f6ed75119e input=1e436eea625cfc35]*/
 {
 #ifndef OPENSSL_NO_PSK
     if (self->protocol == PY_SSL_VERSION_TLS_SERVER) {
@@ -4869,7 +5065,7 @@ static unsigned int psk_server_callback(SSL *s,
         goto error;
     }
 
-    if (psk_len_ > max_psk_len) {
+    if ((size_t)psk_len_ > max_psk_len) {
         Py_DECREF(result);
         goto error;
     }
@@ -4890,6 +5086,7 @@ static unsigned int psk_server_callback(SSL *s,
 #endif
 
 /*[clinic input]
+@critical_section
 _ssl._SSLContext.set_psk_server_callback
     callback: object
     identity_hint: str(accept={str, NoneType}) = None
@@ -4900,7 +5097,7 @@ static PyObject *
 _ssl__SSLContext_set_psk_server_callback_impl(PySSLContext *self,
                                               PyObject *callback,
                                               const char *identity_hint)
-/*[clinic end generated code: output=1f4d6a4e09a92b03 input=65d4b6022aa85ea3]*/
+/*[clinic end generated code: output=1f4d6a4e09a92b03 input=5f79d932458284a7]*/
 {
 #ifndef OPENSSL_NO_PSK
     if (self->protocol == PY_SSL_VERSION_TLS_CLIENT) {
@@ -4945,26 +5142,19 @@ _ssl__SSLContext_set_psk_server_callback_impl(PySSLContext *self,
 
 
 static PyGetSetDef context_getsetlist[] = {
-    {"check_hostname", (getter) get_check_hostname,
-                       (setter) set_check_hostname, NULL},
-    {"_host_flags", (getter) get_host_flags,
-                    (setter) set_host_flags, NULL},
-    {"minimum_version", (getter) get_minimum_version,
-                        (setter) set_minimum_version, NULL},
-    {"maximum_version", (getter) get_maximum_version,
-                        (setter) set_maximum_version, NULL},
+    _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF
+    _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF
+    _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF
+    _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF
     {"keylog_filename", (getter) _PySSLContext_get_keylog_filename,
                         (setter) _PySSLContext_set_keylog_filename, NULL},
     {"_msg_callback", (getter) _PySSLContext_get_msg_callback,
                       (setter) _PySSLContext_set_msg_callback, NULL},
-    {"sni_callback", (getter) get_sni_callback,
-                     (setter) set_sni_callback, PySSLContext_sni_callback_doc},
-#ifdef TLS1_3_VERSION
-    {"num_tickets", (getter) get_num_tickets,
-                    (setter) set_num_tickets, PySSLContext_num_tickets_doc},
+    _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF
+#if defined(TLS1_3_VERSION) && !defined(OPENSSL_NO_TLS1_3)
+    _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF
 #endif
-    {"options", (getter) get_options,
-                (setter) set_options, NULL},
+    _SSL__SSLCONTEXT_OPTIONS_GETSETDEF
     {"post_handshake_auth", (getter) get_post_handshake_auth,
 #ifdef TLS1_3_VERSION
                             (setter) set_post_handshake_auth,
@@ -4972,14 +5162,10 @@ static PyGetSetDef context_getsetlist[] = {
                             NULL,
 #endif
                             NULL},
-    {"protocol", (getter) get_protocol,
-                 NULL, NULL},
-    {"verify_flags", (getter) get_verify_flags,
-                     (setter) set_verify_flags, NULL},
-    {"verify_mode", (getter) get_verify_mode,
-                    (setter) set_verify_mode, NULL},
-    {"security_level", (getter) get_security_level,
-                       NULL, PySSLContext_security_level_doc},
+    _SSL__SSLCONTEXT_PROTOCOL_GETSETDEF
+    _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF
+    _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF
+    _SSL__SSLCONTEXT_SECURITY_LEVEL_GETSETDEF
     {NULL},            /* sentinel */
 };
 
@@ -5026,6 +5212,7 @@ static PyType_Spec PySSLContext_spec = {
  */
 
 /*[clinic input]
+@critical_section
 @classmethod
 _ssl.MemoryBIO.__new__
 
@@ -5033,7 +5220,7 @@ _ssl.MemoryBIO.__new__
 
 static PyObject *
 _ssl_MemoryBIO_impl(PyTypeObject *type)
-/*[clinic end generated code: output=8820a58db78330ac input=26d22e4909ecb1b5]*/
+/*[clinic end generated code: output=8820a58db78330ac input=87f146cf30af454e]*/
 {
     BIO *bio;
     PySSLMemoryBIO *self;
@@ -5078,26 +5265,40 @@ memory_bio_dealloc(PySSLMemoryBIO *self)
     Py_DECREF(tp);
 }
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl.MemoryBIO.pending
+
+The number of bytes pending in the memory BIO.
+[clinic start generated code]*/
+
 static PyObject *
-memory_bio_get_pending(PySSLMemoryBIO *self, void *c)
+_ssl_MemoryBIO_pending_get_impl(PySSLMemoryBIO *self)
+/*[clinic end generated code: output=19236a32a51ac8ff input=02d9063d8ac31732]*/
 {
-    return PyLong_FromSize_t(BIO_ctrl_pending(self->bio));
+    size_t res = BIO_ctrl_pending(self->bio);
+    return PyLong_FromSize_t(res);
 }
 
-PyDoc_STRVAR(PySSL_memory_bio_pending_doc,
-"The number of bytes pending in the memory BIO.");
+/*[clinic input]
+@critical_section
+@getter
+_ssl.MemoryBIO.eof
+
+Whether the memory BIO is at EOF.
+[clinic start generated code]*/
 
 static PyObject *
-memory_bio_get_eof(PySSLMemoryBIO *self, void *c)
+_ssl_MemoryBIO_eof_get_impl(PySSLMemoryBIO *self)
+/*[clinic end generated code: output=c255a9ea16e31b92 input=c6ecc12c4509de1f]*/
 {
-    return PyBool_FromLong((BIO_ctrl_pending(self->bio) == 0)
-                           && self->eof_written);
+    size_t pending = BIO_ctrl_pending(self->bio);
+    return PyBool_FromLong((pending == 0) && self->eof_written);
 }
 
-PyDoc_STRVAR(PySSL_memory_bio_eof_doc,
-"Whether the memory BIO is at EOF.");
-
 /*[clinic input]
+@critical_section
 _ssl.MemoryBIO.read
     size as len: int = -1
     /
@@ -5112,7 +5313,7 @@ distinguish between the two.
 
 static PyObject *
 _ssl_MemoryBIO_read_impl(PySSLMemoryBIO *self, int len)
-/*[clinic end generated code: output=a657aa1e79cd01b3 input=574d7be06a902366]*/
+/*[clinic end generated code: output=a657aa1e79cd01b3 input=21046f2d7dac3a90]*/
 {
     int avail, nbytes;
     PyObject *result;
@@ -5142,6 +5343,7 @@ _ssl_MemoryBIO_read_impl(PySSLMemoryBIO *self, int len)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.MemoryBIO.write
     b: Py_buffer
     /
@@ -5153,7 +5355,7 @@ Returns the number of bytes written.
 
 static PyObject *
 _ssl_MemoryBIO_write_impl(PySSLMemoryBIO *self, Py_buffer *b)
-/*[clinic end generated code: output=156ec59110d75935 input=e45757b3e17c4808]*/
+/*[clinic end generated code: output=156ec59110d75935 input=107da3f5fba26b37]*/
 {
     int nbytes;
 
@@ -5183,6 +5385,7 @@ _ssl_MemoryBIO_write_impl(PySSLMemoryBIO *self, Py_buffer *b)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.MemoryBIO.write_eof
 
 Write an EOF marker to the memory BIO.
@@ -5192,7 +5395,7 @@ When all data has been read, the "eof" property will be True.
 
 static PyObject *
 _ssl_MemoryBIO_write_eof_impl(PySSLMemoryBIO *self)
-/*[clinic end generated code: output=d4106276ccd1ed34 input=56a945f1d29e8bd6]*/
+/*[clinic end generated code: output=d4106276ccd1ed34 input=1e914231b1c5900a]*/
 {
     self->eof_written = 1;
     /* After an EOF is written, a zero return from read() should be a real EOF
@@ -5204,10 +5407,8 @@ _ssl_MemoryBIO_write_eof_impl(PySSLMemoryBIO *self)
 }
 
 static PyGetSetDef memory_bio_getsetlist[] = {
-    {"pending", (getter) memory_bio_get_pending, NULL,
-                PySSL_memory_bio_pending_doc},
-    {"eof", (getter) memory_bio_get_eof, NULL,
-            PySSL_memory_bio_eof_doc},
+    _SSL_MEMORYBIO_PENDING_GETSETDEF
+    _SSL_MEMORYBIO_EOF_GETSETDEF
     {NULL},            /* sentinel */
 };
 
@@ -5256,14 +5457,14 @@ PySSLSession_dealloc(PySSLSession *self)
 static PyObject *
 PySSLSession_richcompare(PyObject *left, PyObject *right, int op)
 {
-    int result;
-    PyTypeObject *sesstype = ((PySSLSession*)left)->ctx->state->PySSLSession_Type;
-
     if (left == NULL || right == NULL) {
         PyErr_BadInternalCall();
         return NULL;
     }
 
+    int result;
+    PyTypeObject *sesstype = ((PySSLSession*)left)->ctx->state->PySSLSession_Type;
+
     if (!Py_IS_TYPE(left, sesstype) || !Py_IS_TYPE(right, sesstype)) {
         Py_RETURN_NOTIMPLEMENTED;
     }
@@ -5327,8 +5528,18 @@ PySSLSession_clear(PySSLSession *self)
 }
 
 
+/*[clinic input]
+@critical_section
+@getter
+_ssl.SSLSession.time
+
+Session creation time (seconds since epoch).
+[clinic start generated code]*/
+
 static PyObject *
-PySSLSession_get_time(PySSLSession *self, void *closure) {
+_ssl_SSLSession_time_get_impl(PySSLSession *self)
+/*[clinic end generated code: output=4b887b9299de9be4 input=67f2325284450ae2]*/
+{
 #if OPENSSL_VERSION_NUMBER >= 0x30300000L
     return _PyLong_FromTime_t(SSL_SESSION_get_time_ex(self->session));
 #else
@@ -5336,65 +5547,80 @@ PySSLSession_get_time(PySSLSession *self, void *closure) {
 #endif
 }
 
-PyDoc_STRVAR(PySSLSession_get_time_doc,
-"Session creation time (seconds since epoch).");
+/*[clinic input]
+@critical_section
+@getter
+_ssl.SSLSession.timeout
 
+Session timeout (delta in seconds).
+[clinic start generated code]*/
 
 static PyObject *
-PySSLSession_get_timeout(PySSLSession *self, void *closure) {
-    return PyLong_FromLong(SSL_SESSION_get_timeout(self->session));
+_ssl_SSLSession_timeout_get_impl(PySSLSession *self)
+/*[clinic end generated code: output=82339c148ab2f7d1 input=cd17c2b087c442f2]*/
+{
+    long timeout = SSL_SESSION_get_timeout(self->session);
+    PyObject *res = PyLong_FromLong(timeout);
+    return res;
 }
 
-PyDoc_STRVAR(PySSLSession_get_timeout_doc,
-"Session timeout (delta in seconds).");
+/*[clinic input]
+@critical_section
+@getter
+_ssl.SSLSession.ticket_lifetime_hint
 
+Ticket life time hint.
+[clinic start generated code]*/
 
 static PyObject *
-PySSLSession_get_ticket_lifetime_hint(PySSLSession *self, void *closure) {
+_ssl_SSLSession_ticket_lifetime_hint_get_impl(PySSLSession *self)
+/*[clinic end generated code: output=c8b6db498136c275 input=f0e2df50961a7806]*/
+{
     unsigned long hint = SSL_SESSION_get_ticket_lifetime_hint(self->session);
     return PyLong_FromUnsignedLong(hint);
 }
 
-PyDoc_STRVAR(PySSLSession_get_ticket_lifetime_hint_doc,
-"Ticket life time hint.");
+/*[clinic input]
+@critical_section
+@getter
+_ssl.SSLSession.id
 
+Session ID.
+[clinic start generated code]*/
 
 static PyObject *
-PySSLSession_get_session_id(PySSLSession *self, void *closure) {
+_ssl_SSLSession_id_get_impl(PySSLSession *self)
+/*[clinic end generated code: output=c532fb96b10c5adf input=0a379e64312b776d]*/
+
+{
     const unsigned char *id;
     unsigned int len;
     id = SSL_SESSION_get_id(self->session, &len);
     return PyBytes_FromStringAndSize((const char *)id, len);
 }
 
-PyDoc_STRVAR(PySSLSession_get_session_id_doc,
-"Session id");
+/*[clinic input]
+@critical_section
+@getter
+_ssl.SSLSession.has_ticket
 
+Does the session contain a ticket?
+[clinic start generated code]*/
 
 static PyObject *
-PySSLSession_get_has_ticket(PySSLSession *self, void *closure) {
-    if (SSL_SESSION_has_ticket(self->session)) {
-        Py_RETURN_TRUE;
-    } else {
-        Py_RETURN_FALSE;
-    }
+_ssl_SSLSession_has_ticket_get_impl(PySSLSession *self)
+/*[clinic end generated code: output=aa3ccfc40b10b96d input=fa475555f53a5086]*/
+{
+    int res = SSL_SESSION_has_ticket(self->session);
+    return res ? Py_True : Py_False;
 }
 
-PyDoc_STRVAR(PySSLSession_get_has_ticket_doc,
-"Does the session contain a ticket?");
-
-
 static PyGetSetDef PySSLSession_getsetlist[] = {
-    {"has_ticket", (getter) PySSLSession_get_has_ticket, NULL,
-              PySSLSession_get_has_ticket_doc},
-    {"id",   (getter) PySSLSession_get_session_id, NULL,
-              PySSLSession_get_session_id_doc},
-    {"ticket_lifetime_hint", (getter) PySSLSession_get_ticket_lifetime_hint,
-              NULL, PySSLSession_get_ticket_lifetime_hint_doc},
-    {"time", (getter) PySSLSession_get_time, NULL,
-              PySSLSession_get_time_doc},
-    {"timeout", (getter) PySSLSession_get_timeout, NULL,
-              PySSLSession_get_timeout_doc},
+    _SSL_SSLSESSION_HAS_TICKET_GETSETDEF
+    _SSL_SSLSESSION_ID_GETSETDEF
+    _SSL_SSLSESSION_TICKET_LIFETIME_HINT_GETSETDEF
+    _SSL_SSLSESSION_TIME_GETSETDEF
+    _SSL_SSLSESSION_TIMEOUT_GETSETDEF
     {NULL},            /* sentinel */
 };
 
@@ -5419,6 +5645,7 @@ static PyType_Spec PySSLSession_spec = {
 
 /* helper routines for seeding the SSL PRNG */
 /*[clinic input]
+@critical_section
 _ssl.RAND_add
     string as view: Py_buffer(accept={str, buffer})
     entropy: double
@@ -5432,7 +5659,7 @@ string.  See RFC 4086.
 
 static PyObject *
 _ssl_RAND_add_impl(PyObject *module, Py_buffer *view, double entropy)
-/*[clinic end generated code: output=e6dd48df9c9024e9 input=5c33017422828f5c]*/
+/*[clinic end generated code: output=e6dd48df9c9024e9 input=313cb73b34db31d5]*/
 {
     const char *buf;
     Py_ssize_t len, written;
@@ -5488,6 +5715,7 @@ PySSL_RAND(PyObject *module, int len, int pseudo)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.RAND_bytes
     n: int
     /
@@ -5497,13 +5725,14 @@ Generate n cryptographically strong pseudo-random bytes.
 
 static PyObject *
 _ssl_RAND_bytes_impl(PyObject *module, int n)
-/*[clinic end generated code: output=977da635e4838bc7 input=678ddf2872dfebfc]*/
+/*[clinic end generated code: output=977da635e4838bc7 input=2e78ce1e86336776]*/
 {
     return PySSL_RAND(module, n, 0);
 }
 
 
 /*[clinic input]
+@critical_section
 _ssl.RAND_status
 
 Returns True if the OpenSSL PRNG has been seeded with enough data and False if not.
@@ -5514,12 +5743,13 @@ using the ssl() function.
 
 static PyObject *
 _ssl_RAND_status_impl(PyObject *module)
-/*[clinic end generated code: output=7e0aaa2d39fdc1ad input=d5ae5aea52f36e01]*/
+/*[clinic end generated code: output=7e0aaa2d39fdc1ad input=636fb5659ea2e727]*/
 {
     return PyBool_FromLong(RAND_status());
 }
 
 /*[clinic input]
+@critical_section
 _ssl.get_default_verify_paths
 
 Return search paths and environment vars that are used by SSLContext's set_default_verify_paths() to load default CAs.
@@ -5529,7 +5759,7 @@ The values are 'cert_file_env', 'cert_file', 'cert_dir_env', 'cert_dir'.
 
 static PyObject *
 _ssl_get_default_verify_paths_impl(PyObject *module)
-/*[clinic end generated code: output=e5b62a466271928b input=5210c953d98c3eb5]*/
+/*[clinic end generated code: output=e5b62a466271928b input=c6ae00bc04eb2b6e]*/
 {
     PyObject *ofile_env = NULL;
     PyObject *ofile = NULL;
@@ -5578,6 +5808,7 @@ asn1obj2py(_sslmodulestate *state, ASN1_OBJECT *obj)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.txt2obj
     txt: str
     name: bool = False
@@ -5590,7 +5821,7 @@ long name are also matched.
 
 static PyObject *
 _ssl_txt2obj_impl(PyObject *module, const char *txt, int name)
-/*[clinic end generated code: output=c38e3991347079c1 input=1c1e7d0aa7c48602]*/
+/*[clinic end generated code: output=c38e3991347079c1 input=c99b134d70173c5e]*/
 {
     PyObject *result = NULL;
     ASN1_OBJECT *obj;
@@ -5606,6 +5837,7 @@ _ssl_txt2obj_impl(PyObject *module, const char *txt, int name)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.nid2obj
     nid: int
     /
@@ -5615,7 +5847,7 @@ Lookup NID, short name, long name and OID of an ASN1_OBJECT by NID.
 
 static PyObject *
 _ssl_nid2obj_impl(PyObject *module, int nid)
-/*[clinic end generated code: output=4a98ab691cd4f84a input=51787a3bee7d8f98]*/
+/*[clinic end generated code: output=4a98ab691cd4f84a input=1b1170506fa83a53]*/
 {
     PyObject *result = NULL;
     ASN1_OBJECT *obj;
@@ -5767,6 +5999,7 @@ ssl_collect_certificates(const char *store_name)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.enum_certificates
     store_name: str
 
@@ -5781,7 +6014,7 @@ a set of OIDs or the boolean True.
 
 static PyObject *
 _ssl_enum_certificates_impl(PyObject *module, const char *store_name)
-/*[clinic end generated code: output=5134dc8bb3a3c893 input=915f60d70461ea4e]*/
+/*[clinic end generated code: output=5134dc8bb3a3c893 input=263c22e6c6988cf3]*/
 {
     HCERTSTORE hCollectionStore = NULL;
     PCCERT_CONTEXT pCertCtx = NULL;
@@ -5866,6 +6099,7 @@ _ssl_enum_certificates_impl(PyObject *module, const char *store_name)
 }
 
 /*[clinic input]
+@critical_section
 _ssl.enum_crls
     store_name: str
 
@@ -5879,7 +6113,7 @@ X509_ASN_ENCODING or PKCS_7_ASN_ENCODING.
 
 static PyObject *
 _ssl_enum_crls_impl(PyObject *module, const char *store_name)
-/*[clinic end generated code: output=bce467f60ccd03b6 input=a1f1d7629f1c5d3d]*/
+/*[clinic end generated code: output=bce467f60ccd03b6 input=51a1b1059e55ce43]*/
 {
     HCERTSTORE hCollectionStore = NULL;
     PCCRL_CONTEXT pCrlCtx = NULL;
diff --git a/Modules/_struct.c b/Modules/_struct.c
index 905dcbdeeddc5a..30b8bd9600b378 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -281,7 +281,7 @@ get_size_t(_structmodulestate *state, PyObject *v, size_t *p)
 #define RANGE_ERROR(state, f, flag) return _range_error(state, f, flag)
 
 
-/* Floating point helpers */
+/* Floating-point helpers */
 
 static PyObject *
 unpack_halffloat(const char *p,  /* start of 2-byte string */
@@ -486,9 +486,8 @@ nu_ulonglong(_structmodulestate *state, const char *p, const formatdef *f)
 static PyObject *
 nu_bool(_structmodulestate *state, const char *p, const formatdef *f)
 {
-    _Bool x;
-    memcpy((char *)&x, p, sizeof x);
-    return PyBool_FromLong(x != 0);
+    const _Bool bool_false = 0;
+    return PyBool_FromLong(memcmp(p, &bool_false, sizeof(_Bool)));
 }
 
 
@@ -1669,9 +1668,16 @@ s_unpack_internal(PyStructObject *soself, const char *startfrom,
             if (e->format == 's') {
                 v = PyBytes_FromStringAndSize(res, code->size);
             } else if (e->format == 'p') {
-                Py_ssize_t n = *(unsigned char*)res;
-                if (n >= code->size)
-                    n = code->size - 1;
+                Py_ssize_t n;
+                if (code->size == 0) {
+                    n = 0;
+                }
+                else {
+                    n = *(unsigned char*)res;
+                    if (n >= code->size) {
+                        n = code->size - 1;
+                    }
+                }
                 v = PyBytes_FromStringAndSize(res + 1, n);
             } else {
                 v = e->unpack(state, res, e);
@@ -1982,8 +1988,12 @@ s_pack_internal(PyStructObject *soself, PyObject *const *args, int offset,
                     n = PyByteArray_GET_SIZE(v);
                     p = PyByteArray_AS_STRING(v);
                 }
-                if (n > (code->size - 1))
+                if (code->size == 0) {
+                    n = 0;
+                }
+                else if (n > (code->size - 1)) {
                     n = code->size - 1;
+                }
                 if (n > 0)
                     memcpy(res + 1, p, n);
                 if (n > 255)
diff --git a/Modules/_testcapi/clinic/file.c.h b/Modules/_testcapi/clinic/file.c.h
new file mode 100644
index 00000000000000..2a01a63caf7ff3
--- /dev/null
+++ b/Modules/_testcapi/clinic/file.c.h
@@ -0,0 +1,31 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(_testcapi_pyfile_newstdprinter__doc__,
+"pyfile_newstdprinter($module, fd, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYFILE_NEWSTDPRINTER_METHODDEF    \
+    {"pyfile_newstdprinter", (PyCFunction)_testcapi_pyfile_newstdprinter, METH_O, _testcapi_pyfile_newstdprinter__doc__},
+
+static PyObject *
+_testcapi_pyfile_newstdprinter_impl(PyObject *module, int fd);
+
+static PyObject *
+_testcapi_pyfile_newstdprinter(PyObject *module, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    int fd;
+
+    fd = PyLong_AsInt(arg);
+    if (fd == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _testcapi_pyfile_newstdprinter_impl(module, fd);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=44002184a5d9dbb9 input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/datetime.c b/Modules/_testcapi/datetime.c
index b1796039f0d83a..f3d54215e04232 100644
--- a/Modules/_testcapi/datetime.c
+++ b/Modules/_testcapi/datetime.c
@@ -22,10 +22,17 @@ test_datetime_capi(PyObject *self, PyObject *args)
     test_run_counter++;
     PyDateTime_IMPORT;
 
-    if (PyDateTimeAPI) {
-        Py_RETURN_NONE;
+    if (PyDateTimeAPI == NULL) {
+        return NULL;
     }
-    return NULL;
+    // The following C API types need to outlive interpreters, since the
+    // borrowed references to them can be held by users without being updated.
+    assert(!PyType_HasFeature(PyDateTimeAPI->DateType, Py_TPFLAGS_HEAPTYPE));
+    assert(!PyType_HasFeature(PyDateTimeAPI->TimeType, Py_TPFLAGS_HEAPTYPE));
+    assert(!PyType_HasFeature(PyDateTimeAPI->DateTimeType, Py_TPFLAGS_HEAPTYPE));
+    assert(!PyType_HasFeature(PyDateTimeAPI->DeltaType, Py_TPFLAGS_HEAPTYPE));
+    assert(!PyType_HasFeature(PyDateTimeAPI->TZInfoType, Py_TPFLAGS_HEAPTYPE));
+    Py_RETURN_NONE;
 }
 
 /* Functions exposing the C API type checking for testing */
@@ -479,3 +486,38 @@ _PyTestCapi_Init_DateTime(PyObject *mod)
     }
     return 0;
 }
+
+
+/* ---------------------------------------------------------------------------
+ * Test module for subinterpreters.
+ */
+
+static int
+_testcapi_datetime_exec(PyObject *mod)
+{
+    if (test_datetime_capi(NULL, NULL) == NULL)  {
+        return -1;
+    }
+    return 0;
+}
+
+static PyModuleDef_Slot _testcapi_datetime_slots[] = {
+    {Py_mod_exec, _testcapi_datetime_exec},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {Py_mod_gil, Py_MOD_GIL_NOT_USED},
+    {0, NULL},
+};
+
+static struct PyModuleDef _testcapi_datetime_module = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testcapi_datetime",
+    .m_size = 0,
+    .m_methods = test_methods,
+    .m_slots = _testcapi_datetime_slots,
+};
+
+PyMODINIT_FUNC
+PyInit__testcapi_datetime(void)
+{
+    return PyModuleDef_Init(&_testcapi_datetime_module);
+}
diff --git a/Modules/_testcapi/exceptions.c b/Modules/_testcapi/exceptions.c
index 42a9915143e6fa..d73625c453f6c4 100644
--- a/Modules/_testcapi/exceptions.c
+++ b/Modules/_testcapi/exceptions.c
@@ -3,6 +3,7 @@
 
 #include "parts.h"
 #include "util.h"
+
 #include "clinic/exceptions.c.h"
 
 
diff --git a/Modules/_testcapi/file.c b/Modules/_testcapi/file.c
index 634563f6ea12cb..bfb794d9ceaf77 100644
--- a/Modules/_testcapi/file.c
+++ b/Modules/_testcapi/file.c
@@ -1,17 +1,37 @@
 #include "parts.h"
 #include "util.h"
+#include "clinic/file.c.h"
+
+
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
+
+
+/*[clinic input]
+_testcapi.pyfile_newstdprinter
+
+    fd: int
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_pyfile_newstdprinter_impl(PyObject *module, int fd)
+/*[clinic end generated code: output=8a2d1c57b6892db3 input=442f1824142262ea]*/
+{
+    return PyFile_NewStdPrinter(fd);
+}
 
 
 static PyMethodDef test_methods[] = {
+    _TESTCAPI_PYFILE_NEWSTDPRINTER_METHODDEF
     {NULL},
 };
 
 int
 _PyTestCapi_Init_File(PyObject *m)
 {
-    if (PyModule_AddFunctions(m, test_methods) < 0){
-        return -1;
-    }
-
-    return 0;
+    return PyModule_AddFunctions(m, test_methods);
 }
diff --git a/Modules/_testcapi/mem.c b/Modules/_testcapi/mem.c
index ab4ad934644c38..ecae5ba26226a6 100644
--- a/Modules/_testcapi/mem.c
+++ b/Modules/_testcapi/mem.c
@@ -557,8 +557,9 @@ tracemalloc_untrack(PyObject *self, PyObject *args)
 {
     unsigned int domain;
     PyObject *ptr_obj;
+    int release_gil = 0;
 
-    if (!PyArg_ParseTuple(args, "IO", &domain, &ptr_obj)) {
+    if (!PyArg_ParseTuple(args, "IO|i", &domain, &ptr_obj, &release_gil)) {
         return NULL;
     }
     void *ptr = PyLong_AsVoidPtr(ptr_obj);
@@ -566,7 +567,15 @@ tracemalloc_untrack(PyObject *self, PyObject *args)
         return NULL;
     }
 
-    int res = PyTraceMalloc_Untrack(domain, (uintptr_t)ptr);
+    int res;
+    if (release_gil) {
+        Py_BEGIN_ALLOW_THREADS
+        res = PyTraceMalloc_Untrack(domain, (uintptr_t)ptr);
+        Py_END_ALLOW_THREADS
+    }
+    else {
+        res = PyTraceMalloc_Untrack(domain, (uintptr_t)ptr);
+    }
     if (res < 0) {
         PyErr_SetString(PyExc_RuntimeError, "PyTraceMalloc_Untrack error");
         return NULL;
diff --git a/Modules/_testcapi/monitoring.c b/Modules/_testcapi/monitoring.c
index aa90cfc06c1536..6fd4a405688f48 100644
--- a/Modules/_testcapi/monitoring.c
+++ b/Modules/_testcapi/monitoring.c
@@ -416,16 +416,17 @@ fire_event_stop_iteration(PyObject *self, PyObject *args)
 {
     PyObject *codelike;
     int offset;
-    PyObject *exception;
-    if (!PyArg_ParseTuple(args, "OiO", &codelike, &offset, &exception)) {
+    PyObject *value;
+    if (!PyArg_ParseTuple(args, "OiO", &codelike, &offset, &value)) {
         return NULL;
     }
-    NULLABLE(exception);
+    NULLABLE(value);
+    PyObject *exception = NULL;
     PyMonitoringState *state = setup_fire(codelike, offset, exception);
     if (state == NULL) {
         return NULL;
     }
-    int res = PyMonitoring_FireStopIterationEvent(state, codelike, offset);
+    int res = PyMonitoring_FireStopIterationEvent(state, codelike, offset, value);
     RETURN_INT(teardown_fire(res, state, exception));
 }
 
diff --git a/Modules/_testcapi/numbers.c b/Modules/_testcapi/numbers.c
index 6f7fa3fa7a4186..e16ff73744067a 100644
--- a/Modules/_testcapi/numbers.c
+++ b/Modules/_testcapi/numbers.c
@@ -1,7 +1,168 @@
 #include "parts.h"
 #include "util.h"
 
+
+static PyObject *
+number_check(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyNumber_Check(obj));
+}
+
+#define BINARYFUNC(funcsuffix, methsuffix)                           \
+    static PyObject *                                                \
+    number_##methsuffix(PyObject *Py_UNUSED(module), PyObject *args) \
+    {                                                                \
+        PyObject *o1, *o2;                                           \
+                                                                     \
+        if (!PyArg_ParseTuple(args, "OO", &o1, &o2)) {               \
+            return NULL;                                             \
+        }                                                            \
+                                                                     \
+        NULLABLE(o1);                                                \
+        NULLABLE(o2);                                                \
+        return PyNumber_##funcsuffix(o1, o2);                        \
+    };
+
+BINARYFUNC(Add, add)
+BINARYFUNC(Subtract, subtract)
+BINARYFUNC(Multiply, multiply)
+BINARYFUNC(MatrixMultiply, matrixmultiply)
+BINARYFUNC(FloorDivide, floordivide)
+BINARYFUNC(TrueDivide, truedivide)
+BINARYFUNC(Remainder, remainder)
+BINARYFUNC(Divmod, divmod)
+
+#define TERNARYFUNC(funcsuffix, methsuffix)                          \
+    static PyObject *                                                \
+    number_##methsuffix(PyObject *Py_UNUSED(module), PyObject *args) \
+    {                                                                \
+        PyObject *o1, *o2, *o3 = Py_None;                            \
+                                                                     \
+        if (!PyArg_ParseTuple(args, "OO|O", &o1, &o2, &o3)) {        \
+            return NULL;                                             \
+        }                                                            \
+                                                                     \
+        NULLABLE(o1);                                                \
+        NULLABLE(o2);                                                \
+        return PyNumber_##funcsuffix(o1, o2, o3);                    \
+    };
+
+TERNARYFUNC(Power, power)
+
+#define UNARYFUNC(funcsuffix, methsuffix)                            \
+    static PyObject *                                                \
+    number_##methsuffix(PyObject *Py_UNUSED(module), PyObject *obj)  \
+    {                                                                \
+        NULLABLE(obj);                                               \
+        return PyNumber_##funcsuffix(obj);                           \
+    };
+
+UNARYFUNC(Negative, negative)
+UNARYFUNC(Positive, positive)
+UNARYFUNC(Absolute, absolute)
+UNARYFUNC(Invert, invert)
+
+BINARYFUNC(Lshift, lshift)
+BINARYFUNC(Rshift, rshift)
+BINARYFUNC(And, and)
+BINARYFUNC(Xor, xor)
+BINARYFUNC(Or, or)
+
+BINARYFUNC(InPlaceAdd, inplaceadd)
+BINARYFUNC(InPlaceSubtract, inplacesubtract)
+BINARYFUNC(InPlaceMultiply, inplacemultiply)
+BINARYFUNC(InPlaceMatrixMultiply, inplacematrixmultiply)
+BINARYFUNC(InPlaceFloorDivide, inplacefloordivide)
+BINARYFUNC(InPlaceTrueDivide, inplacetruedivide)
+BINARYFUNC(InPlaceRemainder, inplaceremainder)
+
+TERNARYFUNC(InPlacePower, inplacepower)
+
+BINARYFUNC(InPlaceLshift, inplacelshift)
+BINARYFUNC(InPlaceRshift, inplacershift)
+BINARYFUNC(InPlaceAnd, inplaceand)
+BINARYFUNC(InPlaceXor, inplacexor)
+BINARYFUNC(InPlaceOr, inplaceor)
+
+UNARYFUNC(Long, long)
+UNARYFUNC(Float, float)
+UNARYFUNC(Index, index)
+
+static PyObject *
+number_tobase(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *n;
+    int base;
+
+    if (!PyArg_ParseTuple(args, "Oi", &n, &base)) {
+        return NULL;
+    }
+
+    NULLABLE(n);
+    return PyNumber_ToBase(n, base);
+}
+
+static PyObject *
+number_asssizet(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *o, *exc;
+    Py_ssize_t ret;
+
+    if (!PyArg_ParseTuple(args, "OO", &o, &exc)) {
+        return NULL;
+    }
+
+    NULLABLE(o);
+    NULLABLE(exc);
+    ret = PyNumber_AsSsize_t(o, exc);
+
+    if (ret == (Py_ssize_t)(-1) && PyErr_Occurred()) {
+        return NULL;
+    }
+
+    return PyLong_FromSsize_t(ret);
+}
+
+
 static PyMethodDef test_methods[] = {
+    {"number_check", number_check, METH_O},
+    {"number_add", number_add, METH_VARARGS},
+    {"number_subtract", number_subtract, METH_VARARGS},
+    {"number_multiply", number_multiply, METH_VARARGS},
+    {"number_matrixmultiply", number_matrixmultiply, METH_VARARGS},
+    {"number_floordivide", number_floordivide, METH_VARARGS},
+    {"number_truedivide", number_truedivide, METH_VARARGS},
+    {"number_remainder", number_remainder, METH_VARARGS},
+    {"number_divmod", number_divmod, METH_VARARGS},
+    {"number_power", number_power, METH_VARARGS},
+    {"number_negative", number_negative, METH_O},
+    {"number_positive", number_positive, METH_O},
+    {"number_absolute", number_absolute, METH_O},
+    {"number_invert", number_invert, METH_O},
+    {"number_lshift", number_lshift, METH_VARARGS},
+    {"number_rshift", number_rshift, METH_VARARGS},
+    {"number_and", number_and, METH_VARARGS},
+    {"number_xor", number_xor, METH_VARARGS},
+    {"number_or", number_or, METH_VARARGS},
+    {"number_inplaceadd", number_inplaceadd, METH_VARARGS},
+    {"number_inplacesubtract", number_inplacesubtract, METH_VARARGS},
+    {"number_inplacemultiply", number_inplacemultiply, METH_VARARGS},
+    {"number_inplacematrixmultiply", number_inplacematrixmultiply, METH_VARARGS},
+    {"number_inplacefloordivide", number_inplacefloordivide, METH_VARARGS},
+    {"number_inplacetruedivide", number_inplacetruedivide, METH_VARARGS},
+    {"number_inplaceremainder", number_inplaceremainder, METH_VARARGS},
+    {"number_inplacepower", number_inplacepower, METH_VARARGS},
+    {"number_inplacelshift", number_inplacelshift, METH_VARARGS},
+    {"number_inplacershift", number_inplacershift, METH_VARARGS},
+    {"number_inplaceand", number_inplaceand, METH_VARARGS},
+    {"number_inplacexor", number_inplacexor, METH_VARARGS},
+    {"number_inplaceor", number_inplaceor, METH_VARARGS},
+    {"number_long", number_long, METH_O},
+    {"number_float", number_float, METH_O},
+    {"number_index", number_index, METH_O},
+    {"number_tobase", number_tobase, METH_VARARGS},
+    {"number_asssizet", number_asssizet, METH_VARARGS},
     {NULL},
 };
 
diff --git a/Modules/_testcapi/object.c b/Modules/_testcapi/object.c
index 8dd34cf4fc47d4..1c76e766a790f0 100644
--- a/Modules/_testcapi/object.c
+++ b/Modules/_testcapi/object.c
@@ -117,11 +117,19 @@ pyobject_print_os_error(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+pyobject_clear_weakrefs_no_callbacks(PyObject *self, PyObject *obj)
+{
+    PyUnstable_Object_ClearWeakRefsNoCallbacks(obj);
+    Py_RETURN_NONE;
+}
+
 static PyMethodDef test_methods[] = {
     {"call_pyobject_print", call_pyobject_print, METH_VARARGS},
     {"pyobject_print_null", pyobject_print_null, METH_VARARGS},
     {"pyobject_print_noref_object", pyobject_print_noref_object, METH_VARARGS},
     {"pyobject_print_os_error", pyobject_print_os_error, METH_VARARGS},
+    {"pyobject_clear_weakrefs_no_callbacks", pyobject_clear_weakrefs_no_callbacks, METH_O},
 
     {NULL},
 };
diff --git a/Modules/_testcapi/pyatomic.c b/Modules/_testcapi/pyatomic.c
index 4f72844535ebd6..850de6f9c3366b 100644
--- a/Modules/_testcapi/pyatomic.c
+++ b/Modules/_testcapi/pyatomic.c
@@ -125,6 +125,7 @@ test_atomic_fences(PyObject *self, PyObject *obj) {
     // Just make sure that the fences compile. We are not
     // testing any synchronizing ordering.
     _Py_atomic_fence_seq_cst();
+    _Py_atomic_fence_acquire();
     _Py_atomic_fence_release();
     Py_RETURN_NONE;
 }
diff --git a/Modules/_testcapi/tuple.c b/Modules/_testcapi/tuple.c
index 95dde8c0edadbe..d9c02ba0ff04fe 100644
--- a/Modules/_testcapi/tuple.c
+++ b/Modules/_testcapi/tuple.c
@@ -2,14 +2,121 @@
 #include "util.h"
 
 
+static PyObject *
+tuple_get_size(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyTuple_GET_SIZE(obj));
+}
+
+static PyObject *
+tuple_get_item(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &obj, &i)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return Py_XNewRef(PyTuple_GET_ITEM(obj, i));
+}
+
+static PyObject *
+tuple_copy(PyObject *tuple)
+{
+    Py_ssize_t size = PyTuple_GET_SIZE(tuple);
+    PyObject *newtuple = PyTuple_New(size);
+    if (!newtuple) {
+        return NULL;
+    }
+    for (Py_ssize_t n = 0; n < size; n++) {
+        PyTuple_SET_ITEM(newtuple, n, Py_XNewRef(PyTuple_GET_ITEM(tuple, n)));
+    }
+    return newtuple;
+}
+
+static PyObject *
+tuple_set_item(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value, *newtuple;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "OnO", &obj, &i, &value)) {
+        return NULL;
+    }
+    NULLABLE(value);
+    if (PyTuple_CheckExact(obj)) {
+        newtuple = tuple_copy(obj);
+        if (!newtuple) {
+            return NULL;
+        }
+
+        PyObject *val = PyTuple_GET_ITEM(newtuple, i);
+        PyTuple_SET_ITEM(newtuple, i, Py_XNewRef(value));
+        Py_DECREF(val);
+        return newtuple;
+    }
+    else {
+        NULLABLE(obj);
+
+        PyObject *val = PyTuple_GET_ITEM(obj, i);
+        PyTuple_SET_ITEM(obj, i, Py_XNewRef(value));
+        Py_DECREF(val);
+        return Py_XNewRef(obj);
+    }
+}
+
+static PyObject *
+_tuple_resize(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *tup;
+    Py_ssize_t newsize;
+    int new = 1;
+    if (!PyArg_ParseTuple(args, "On|p", &tup, &newsize, &new)) {
+        return NULL;
+    }
+    if (new) {
+        tup = tuple_copy(tup);
+        if (!tup) {
+            return NULL;
+        }
+    }
+    else {
+        NULLABLE(tup);
+        Py_XINCREF(tup);
+    }
+    int r = _PyTuple_Resize(&tup, newsize);
+    if (r == -1) {
+        assert(tup == NULL);
+        return NULL;
+    }
+    return tup;
+}
+
+static PyObject *
+_check_tuple_item_is_NULL(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &obj, &i)) {
+        return NULL;
+    }
+    return PyLong_FromLong(PyTuple_GET_ITEM(obj, i) == NULL);
+}
+
+
 static PyMethodDef test_methods[] = {
+    {"tuple_get_size", tuple_get_size, METH_O},
+    {"tuple_get_item", tuple_get_item, METH_VARARGS},
+    {"tuple_set_item", tuple_set_item, METH_VARARGS},
+    {"_tuple_resize", _tuple_resize, METH_VARARGS},
+    {"_check_tuple_item_is_NULL", _check_tuple_item_is_NULL, METH_VARARGS},
     {NULL},
 };
 
 int
 _PyTestCapi_Init_Tuple(PyObject *m)
 {
-    if (PyModule_AddFunctions(m, test_methods) < 0){
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
         return -1;
     }
 
diff --git a/Modules/_testcapi/vectorcall.c b/Modules/_testcapi/vectorcall.c
index b30c5e8704c8af..03aaacb328e0b6 100644
--- a/Modules/_testcapi/vectorcall.c
+++ b/Modules/_testcapi/vectorcall.c
@@ -348,6 +348,9 @@ static PyObject *
 MethodDescriptor2_new(PyTypeObject* type, PyObject* args, PyObject *kw)
 {
     MethodDescriptor2Object *op = PyObject_New(MethodDescriptor2Object, type);
+    if (op == NULL) {
+        return NULL;
+    }
     op->base.vectorcall = NULL;
     op->vectorcall = MethodDescriptor_vectorcall;
     return (PyObject *)op;
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index ff31724c0e9ff9..fd6ca815f22efa 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -764,6 +764,14 @@ test_thread_state(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+gilstate_ensure_release(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    PyGILState_STATE state = PyGILState_Ensure();
+    PyGILState_Release(state);
+    Py_RETURN_NONE;
+}
+
 #ifndef MS_WINDOWS
 static PyThread_type_lock wait_done = NULL;
 
@@ -2407,7 +2415,7 @@ type_assign_specific_version_unsafe(PyObject *self, PyObject *args)
     }
     assert(!PyType_HasFeature(type, Py_TPFLAGS_IMMUTABLETYPE));
     type->tp_version_tag = version;
-    type->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG;
+    type->tp_versions_used++;
     Py_RETURN_NONE;
 }
 
@@ -2638,18 +2646,6 @@ test_frame_getvarstring(PyObject *self, PyObject *args)
 }
 
 
-static PyObject *
-eval_get_func_name(PyObject *self, PyObject *func)
-{
-    return PyUnicode_FromString(PyEval_GetFuncName(func));
-}
-
-static PyObject *
-eval_get_func_desc(PyObject *self, PyObject *func)
-{
-    return PyUnicode_FromString(PyEval_GetFuncDesc(func));
-}
-
 static PyObject *
 gen_get_code(PyObject *self, PyObject *gen)
 {
@@ -3073,52 +3069,6 @@ function_set_closure(PyObject *self, PyObject *args)
     Py_RETURN_NONE;
 }
 
-static PyObject *
-check_pyimport_addmodule(PyObject *self, PyObject *args)
-{
-    const char *name;
-    if (!PyArg_ParseTuple(args, "s", &name)) {
-        return NULL;
-    }
-
-    // test PyImport_AddModuleRef()
-    PyObject *module = PyImport_AddModuleRef(name);
-    if (module == NULL) {
-        return NULL;
-    }
-    assert(PyModule_Check(module));
-    // module is a strong reference
-
-    // test PyImport_AddModule()
-    PyObject *module2 = PyImport_AddModule(name);
-    if (module2 == NULL) {
-        goto error;
-    }
-    assert(PyModule_Check(module2));
-    assert(module2 == module);
-    // module2 is a borrowed ref
-
-    // test PyImport_AddModuleObject()
-    PyObject *name_obj = PyUnicode_FromString(name);
-    if (name_obj == NULL) {
-        goto error;
-    }
-    PyObject *module3 = PyImport_AddModuleObject(name_obj);
-    Py_DECREF(name_obj);
-    if (module3 == NULL) {
-        goto error;
-    }
-    assert(PyModule_Check(module3));
-    assert(module3 == module);
-    // module3 is a borrowed ref
-
-    return module;
-
-error:
-    Py_DECREF(module);
-    return NULL;
-}
-
 
 static PyObject *
 test_weakref_capi(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
@@ -3303,6 +3253,174 @@ test_reftracer(PyObject *ob, PyObject *Py_UNUSED(ignored))
     return NULL;
 }
 
+static PyObject *
+function_set_warning(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    if (PyErr_WarnEx(PyExc_RuntimeWarning, "Testing PyErr_WarnEx", 2)) {
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+test_critical_sections(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    Py_BEGIN_CRITICAL_SECTION(module);
+    Py_END_CRITICAL_SECTION();
+
+    Py_BEGIN_CRITICAL_SECTION2(module, module);
+    Py_END_CRITICAL_SECTION2();
+
+    Py_RETURN_NONE;
+}
+
+struct atexit_data {
+    int called;
+    PyThreadState *tstate;
+    PyInterpreterState *interp;
+};
+
+static void
+atexit_callback(void *data)
+{
+    struct atexit_data *at_data = (struct atexit_data *)data;
+    // Ensure that the callback is from the same interpreter
+    assert(PyThreadState_Get() == at_data->tstate);
+    assert(PyInterpreterState_Get() == at_data->interp);
+    ++at_data->called;
+}
+
+static PyObject *
+test_atexit(PyObject *self, PyObject *Py_UNUSED(args))
+{
+    PyThreadState *oldts = PyThreadState_Swap(NULL);
+    PyThreadState *tstate = Py_NewInterpreter();
+
+    struct atexit_data data = {0};
+    data.tstate = PyThreadState_Get();
+    data.interp = PyInterpreterState_Get();
+
+    int amount = 10;
+    for (int i = 0; i < amount; ++i)
+    {
+        int res = PyUnstable_AtExit(tstate->interp, atexit_callback, (void *)&data);
+        if (res < 0) {
+            Py_EndInterpreter(tstate);
+            PyThreadState_Swap(oldts);
+            PyErr_SetString(PyExc_RuntimeError, "atexit callback failed");
+            return NULL;
+        }
+    }
+
+    Py_EndInterpreter(tstate);
+    PyThreadState_Swap(oldts);
+
+    if (data.called != amount) {
+        PyErr_SetString(PyExc_RuntimeError, "atexit callback not called");
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+
+static void
+tracemalloc_track_race_thread(void *data)
+{
+    PyTraceMalloc_Track(123, 10, 1);
+    PyTraceMalloc_Untrack(123, 10);
+
+    PyThread_type_lock lock = (PyThread_type_lock)data;
+    PyThread_release_lock(lock);
+}
+
+// gh-128679: Test fix for tracemalloc.stop() race condition
+static PyObject *
+tracemalloc_track_race(PyObject *self, PyObject *args)
+{
+#define NTHREAD 50
+    PyObject *tracemalloc = NULL;
+    PyObject *stop = NULL;
+    PyThread_type_lock locks[NTHREAD];
+    memset(locks, 0, sizeof(locks));
+
+    // Call tracemalloc.start()
+    tracemalloc = PyImport_ImportModule("tracemalloc");
+    if (tracemalloc == NULL) {
+        goto error;
+    }
+    PyObject *start = PyObject_GetAttrString(tracemalloc, "start");
+    if (start == NULL) {
+        goto error;
+    }
+    PyObject *res = PyObject_CallNoArgs(start);
+    Py_DECREF(start);
+    if (res == NULL) {
+        goto error;
+    }
+    Py_DECREF(res);
+
+    stop = PyObject_GetAttrString(tracemalloc, "stop");
+    Py_CLEAR(tracemalloc);
+    if (stop == NULL) {
+        goto error;
+    }
+
+    // Start threads
+    for (size_t i = 0; i < NTHREAD; i++) {
+        PyThread_type_lock lock = PyThread_allocate_lock();
+        if (!lock) {
+            PyErr_NoMemory();
+            goto error;
+        }
+        locks[i] = lock;
+        PyThread_acquire_lock(lock, 1);
+
+        unsigned long thread;
+        thread = PyThread_start_new_thread(tracemalloc_track_race_thread,
+                                           (void*)lock);
+        if (thread == (unsigned long)-1) {
+            PyErr_SetString(PyExc_RuntimeError, "can't start new thread");
+            goto error;
+        }
+    }
+
+    // Call tracemalloc.stop() while threads are running
+    res = PyObject_CallNoArgs(stop);
+    Py_CLEAR(stop);
+    if (res == NULL) {
+        goto error;
+    }
+    Py_DECREF(res);
+
+    // Wait until threads complete with the GIL released
+    Py_BEGIN_ALLOW_THREADS
+    for (size_t i = 0; i < NTHREAD; i++) {
+        PyThread_type_lock lock = locks[i];
+        PyThread_acquire_lock(lock, 1);
+        PyThread_release_lock(lock);
+    }
+    Py_END_ALLOW_THREADS
+
+    // Free threads locks
+    for (size_t i=0; i < NTHREAD; i++) {
+        PyThread_type_lock lock = locks[i];
+        PyThread_free_lock(lock);
+    }
+    Py_RETURN_NONE;
+
+error:
+    Py_CLEAR(tracemalloc);
+    Py_CLEAR(stop);
+    for (size_t i=0; i < NTHREAD; i++) {
+        PyThread_type_lock lock = locks[i];
+        if (lock) {
+            PyThread_free_lock(lock);
+        }
+    }
+    return NULL;
+#undef NTHREAD
+}
+
 static PyMethodDef TestMethods[] = {
     {"set_errno",               set_errno,                       METH_VARARGS},
     {"test_config",             test_config,                     METH_NOARGS},
@@ -3342,6 +3460,7 @@ static PyMethodDef TestMethods[] = {
     {"test_get_type_dict",        test_get_type_dict,            METH_NOARGS},
     {"test_reftracer",          test_reftracer,                  METH_NOARGS},
     {"_test_thread_state",      test_thread_state,               METH_VARARGS},
+    {"gilstate_ensure_release", gilstate_ensure_release,         METH_NOARGS},
 #ifndef MS_WINDOWS
     {"_spawn_pthread_waiter",   spawn_pthread_waiter,            METH_NOARGS},
     {"_end_spawned_pthread",    end_spawned_pthread,             METH_NOARGS},
@@ -3424,8 +3543,6 @@ static PyMethodDef TestMethods[] = {
     {"frame_new", frame_new, METH_VARARGS, NULL},
     {"frame_getvar", test_frame_getvar, METH_VARARGS, NULL},
     {"frame_getvarstring", test_frame_getvarstring, METH_VARARGS, NULL},
-    {"eval_get_func_name", eval_get_func_name, METH_O, NULL},
-    {"eval_get_func_desc", eval_get_func_desc, METH_O, NULL},
     {"gen_get_code", gen_get_code, METH_O, NULL},
     {"get_feature_macros", get_feature_macros, METH_NOARGS, NULL},
     {"test_code_api", test_code_api, METH_NOARGS, NULL},
@@ -3442,8 +3559,11 @@ static PyMethodDef TestMethods[] = {
     {"function_set_kw_defaults", function_set_kw_defaults, METH_VARARGS, NULL},
     {"function_get_closure", function_get_closure, METH_O, NULL},
     {"function_set_closure", function_set_closure, METH_VARARGS, NULL},
-    {"check_pyimport_addmodule", check_pyimport_addmodule, METH_VARARGS},
     {"test_weakref_capi", test_weakref_capi, METH_NOARGS},
+    {"function_set_warning", function_set_warning, METH_NOARGS},
+    {"test_critical_sections", test_critical_sections, METH_NOARGS},
+    {"test_atexit", test_atexit, METH_NOARGS},
+    {"tracemalloc_track_race", tracemalloc_track_race, METH_NOARGS},
     {NULL, NULL} /* sentinel */
 };
 
diff --git a/Modules/_testclinic.c b/Modules/_testclinic.c
index 4187e13231dc69..2dae8accf01182 100644
--- a/Modules/_testclinic.c
+++ b/Modules/_testclinic.c
@@ -982,54 +982,56 @@ posonly_vararg_impl(PyObject *module, PyObject *a, PyObject *b,
 
 
 /*[clinic input]
-vararg_and_posonly
+vararg
 
     a: object
     *args: object
-    /
 
 [clinic start generated code]*/
 
 static PyObject *
-vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=42792f799465a14d input=defe017b19ba52e8]*/
+vararg_impl(PyObject *module, PyObject *a, PyObject *args)
+/*[clinic end generated code: output=91ab7a0efc52dd5e input=02c0f772d05f591e]*/
 {
     return pack_arguments_newref(2, a, args);
 }
 
 
 /*[clinic input]
-vararg
+vararg_with_default
 
     a: object
     *args: object
+    b: bool = False
 
 [clinic start generated code]*/
 
 static PyObject *
-vararg_impl(PyObject *module, PyObject *a, PyObject *args)
-/*[clinic end generated code: output=91ab7a0efc52dd5e input=02c0f772d05f591e]*/
+vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
+                         int b)
+/*[clinic end generated code: output=182c01035958ce92 input=68cafa6a79f89e36]*/
 {
-    return pack_arguments_newref(2, a, args);
+    PyObject *obj_b = b ? Py_True : Py_False;
+    return pack_arguments_newref(3, a, args, obj_b);
 }
 
 
 /*[clinic input]
-vararg_with_default
+vararg_with_default2
 
     a: object
     *args: object
-    b: bool = False
+    b: object = None
+    c: object = None
 
 [clinic start generated code]*/
 
 static PyObject *
-vararg_with_default_impl(PyObject *module, PyObject *a, PyObject *args,
-                         int b)
-/*[clinic end generated code: output=182c01035958ce92 input=68cafa6a79f89e36]*/
+vararg_with_default2_impl(PyObject *module, PyObject *a, PyObject *args,
+                          PyObject *b, PyObject *c)
+/*[clinic end generated code: output=a0fb7c37796e2129 input=59fb22f5f0a8925f]*/
 {
-    PyObject *obj_b = b ? Py_True : Py_False;
-    return pack_arguments_newref(3, a, args, obj_b);
+    return pack_arguments_newref(4, a, args, b, c);
 }
 
 
@@ -1049,6 +1051,25 @@ vararg_with_only_defaults_impl(PyObject *module, PyObject *args, PyObject *b)
 }
 
 
+/*[clinic input]
+vararg_kwonly_req_opt
+
+    *args: object
+    a: object
+    b: object = None
+    c: object = None
+
+[clinic start generated code]*/
+
+static PyObject *
+vararg_kwonly_req_opt_impl(PyObject *module, PyObject *args, PyObject *a,
+                           PyObject *b, PyObject *c)
+/*[clinic end generated code: output=54694a99c3da370a input=b0d8bf09e540d400]*/
+{
+    return pack_arguments_newref(4, args, a, b, c);
+}
+
+
 
 /*[clinic input]
 gh_32092_oob
@@ -1096,7 +1117,6 @@ gh_32092_kw_pass_impl(PyObject *module, PyObject *pos, PyObject *args,
 gh_99233_refcount
 
     *args: object
-    /
 
 Proof-of-concept of GH-99233 refcount error bug.
 
@@ -1104,7 +1124,7 @@ Proof-of-concept of GH-99233 refcount error bug.
 
 static PyObject *
 gh_99233_refcount_impl(PyObject *module, PyObject *args)
-/*[clinic end generated code: output=585855abfbca9a7f input=85f5fb47ac91a626]*/
+/*[clinic end generated code: output=585855abfbca9a7f input=eecfdc2092d90dc3]*/
 {
     Py_RETURN_NONE;
 }
@@ -1904,10 +1924,11 @@ static PyMethodDef tester_methods[] = {
     POSONLY_OPT_KEYWORDS_OPT_KWONLY_OPT_METHODDEF
     KEYWORD_ONLY_PARAMETER_METHODDEF
     POSONLY_VARARG_METHODDEF
-    VARARG_AND_POSONLY_METHODDEF
     VARARG_METHODDEF
     VARARG_WITH_DEFAULT_METHODDEF
+    VARARG_WITH_DEFAULT2_METHODDEF
     VARARG_WITH_ONLY_DEFAULTS_METHODDEF
+    VARARG_KWONLY_REQ_OPT_METHODDEF
     GH_32092_OOB_METHODDEF
     GH_32092_KW_PASS_METHODDEF
     GH_99233_REFCOUNT_METHODDEF
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
index e209c7e05264f2..dd0fe61d42d25e 100644
--- a/Modules/_testinternalcapi.c
+++ b/Modules/_testinternalcapi.c
@@ -990,13 +990,13 @@ get_co_framesize(PyObject *self, PyObject *arg)
 static PyObject *
 new_counter_optimizer(PyObject *self, PyObject *arg)
 {
-    return PyUnstable_Optimizer_NewCounter();
+    return _PyOptimizer_NewCounter();
 }
 
 static PyObject *
 new_uop_optimizer(PyObject *self, PyObject *arg)
 {
-    return PyUnstable_Optimizer_NewUOpOptimizer();
+    return _PyOptimizer_NewUOpOptimizer();
 }
 
 static PyObject *
@@ -1005,7 +1005,7 @@ set_optimizer(PyObject *self, PyObject *opt)
     if (opt == Py_None) {
         opt = NULL;
     }
-    if (PyUnstable_SetOptimizer((_PyOptimizerObject*)opt) < 0) {
+    if (_Py_SetTier2Optimizer((_PyOptimizerObject*)opt) < 0) {
         return NULL;
     }
     Py_RETURN_NONE;
@@ -1016,7 +1016,7 @@ get_optimizer(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     PyObject *opt = NULL;
 #ifdef _Py_TIER2
-    opt = (PyObject *)PyUnstable_GetOptimizer();
+    opt = (PyObject *)_Py_GetOptimizer();
 #endif
     if (opt == NULL) {
         Py_RETURN_NONE;
@@ -1234,39 +1234,6 @@ unicode_transformdecimalandspacetoascii(PyObject *self, PyObject *arg)
     return _PyUnicode_TransformDecimalAndSpaceToASCII(arg);
 }
 
-
-struct atexit_data {
-    int called;
-};
-
-static void
-callback(void *data)
-{
-    ((struct atexit_data *)data)->called += 1;
-}
-
-static PyObject *
-test_atexit(PyObject *self, PyObject *Py_UNUSED(args))
-{
-    PyThreadState *oldts = PyThreadState_Swap(NULL);
-    PyThreadState *tstate = Py_NewInterpreter();
-
-    struct atexit_data data = {0};
-    int res = PyUnstable_AtExit(tstate->interp, callback, (void *)&data);
-    Py_EndInterpreter(tstate);
-    PyThreadState_Swap(oldts);
-    if (res < 0) {
-        return NULL;
-    }
-
-    if (data.called == 0) {
-        PyErr_SetString(PyExc_RuntimeError, "atexit callback not called");
-        return NULL;
-    }
-    Py_RETURN_NONE;
-}
-
-
 static PyObject *
 test_pyobject_is_freed(const char *test_name, PyObject *op)
 {
@@ -1585,8 +1552,8 @@ exec_interpreter(PyObject *self, PyObject *args, PyObject *kwargs)
     }
 
     PyObject *res = NULL;
-    PyThreadState *tstate = PyThreadState_New(interp);
-    _PyThreadState_SetWhence(tstate, _PyThreadState_WHENCE_EXEC);
+    PyThreadState *tstate =
+        _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_EXEC);
 
     PyThreadState *save_tstate = PyThreadState_Swap(tstate);
 
@@ -1965,24 +1932,18 @@ get_py_thread_id(PyObject *self, PyObject *Py_UNUSED(ignored))
 #endif
 
 static PyObject *
-set_immortalize_deferred(PyObject *self, PyObject *value)
+suppress_immortalization(PyObject *self, PyObject *value)
 {
 #ifdef Py_GIL_DISABLED
-    PyInterpreterState *interp = PyInterpreterState_Get();
-    int old_enabled = interp->gc.immortalize.enabled;
-    int old_enabled_on_thread = interp->gc.immortalize.enable_on_thread_created;
-    int enabled_on_thread = 0;
-    if (!PyArg_ParseTuple(value, "i|i",
-                          &interp->gc.immortalize.enabled,
-                          &enabled_on_thread))
-    {
+    int suppress = PyObject_IsTrue(value);
+    if (suppress < 0) {
         return NULL;
     }
-    interp->gc.immortalize.enable_on_thread_created = enabled_on_thread;
-    return Py_BuildValue("ii", old_enabled, old_enabled_on_thread);
-#else
-    return Py_BuildValue("OO", Py_False, Py_False);
+    PyInterpreterState *interp = PyInterpreterState_Get();
+    // Subtract two to suppress immortalization (so that 1 -> -1)
+    _Py_atomic_add_int(&interp->gc.immortalize, suppress ? -2 : 2);
 #endif
+    Py_RETURN_NONE;
 }
 
 static PyObject *
@@ -1990,7 +1951,7 @@ get_immortalize_deferred(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
 #ifdef Py_GIL_DISABLED
     PyInterpreterState *interp = PyInterpreterState_Get();
-    return PyBool_FromLong(interp->gc.immortalize.enable_on_thread_created);
+    return PyBool_FromLong(_Py_atomic_load_int(&interp->gc.immortalize) >= 0);
 #else
     Py_RETURN_FALSE;
 #endif
@@ -2006,6 +1967,25 @@ has_inline_values(PyObject *self, PyObject *obj)
     Py_RETURN_FALSE;
 }
 
+
+/*[clinic input]
+gh_119213_getargs
+
+    spam: object = None
+
+Test _PyArg_Parser.kwtuple
+[clinic start generated code]*/
+
+static PyObject *
+gh_119213_getargs_impl(PyObject *module, PyObject *spam)
+/*[clinic end generated code: output=d8d9c95d5b446802 input=65ef47511da80fc2]*/
+{
+    // It must never have been called in the main interprer
+    assert(!_Py_IsMainInterpreter(PyInterpreterState_Get()));
+    return Py_NewRef(spam);
+}
+
+
 static PyMethodDef module_functions[] = {
     {"get_configs", get_configs, METH_NOARGS},
     {"get_recursion_depth", get_recursion_depth, METH_NOARGS},
@@ -2052,7 +2032,6 @@ static PyMethodDef module_functions[] = {
     {"_PyTraceMalloc_GetTraceback", tracemalloc_get_traceback, METH_VARARGS},
     {"test_tstate_capi", test_tstate_capi, METH_NOARGS, NULL},
     {"_PyUnicode_TransformDecimalAndSpaceToASCII", unicode_transformdecimalandspacetoascii, METH_O},
-    {"test_atexit", test_atexit, METH_NOARGS},
     {"check_pyobject_forbidden_bytes_is_freed",
                             check_pyobject_forbidden_bytes_is_freed, METH_NOARGS},
     {"check_pyobject_freed_is_freed", check_pyobject_freed_is_freed, METH_NOARGS},
@@ -2091,11 +2070,12 @@ static PyMethodDef module_functions[] = {
 #ifdef Py_GIL_DISABLED
     {"py_thread_id", get_py_thread_id, METH_NOARGS},
 #endif
-    {"set_immortalize_deferred", set_immortalize_deferred, METH_VARARGS},
+    {"suppress_immortalization", suppress_immortalization, METH_O},
     {"get_immortalize_deferred", get_immortalize_deferred, METH_NOARGS},
 #ifdef _Py_TIER2
     {"uop_symbols_test", _Py_uop_symbols_test, METH_NOARGS},
 #endif
+    GH_119213_GETARGS_METHODDEF
     {NULL, NULL} /* sentinel */
 };
 
diff --git a/Modules/_testinternalcapi/test_critical_sections.c b/Modules/_testinternalcapi/test_critical_sections.c
index cdf8a70fc79ff3..0129bd49ca93c3 100644
--- a/Modules/_testinternalcapi/test_critical_sections.c
+++ b/Modules/_testinternalcapi/test_critical_sections.c
@@ -49,15 +49,6 @@ test_critical_sections(PyObject *self, PyObject *Py_UNUSED(args))
     Py_END_CRITICAL_SECTION2();
     assert_nogil(!PyMutex_IsLocked(&d2->ob_mutex));
 
-    // Optional variant behaves the same if the object is non-NULL
-    Py_XBEGIN_CRITICAL_SECTION(d1);
-    assert_nogil(PyMutex_IsLocked(&d1->ob_mutex));
-    Py_XEND_CRITICAL_SECTION();
-
-    // No-op
-    Py_XBEGIN_CRITICAL_SECTION(NULL);
-    Py_XEND_CRITICAL_SECTION();
-
     Py_DECREF(d2);
     Py_DECREF(d1);
     Py_RETURN_NONE;
@@ -139,6 +130,7 @@ test_critical_sections_suspend(PyObject *self, PyObject *Py_UNUSED(args))
     Py_RETURN_NONE;
 }
 
+#ifdef Py_CAN_START_THREADS
 struct test_data {
     PyObject *obj1;
     PyObject *obj2;
@@ -179,7 +171,6 @@ thread_critical_sections(void *arg)
     }
 }
 
-#ifdef Py_CAN_START_THREADS
 static PyObject *
 test_critical_sections_threads(PyObject *self, PyObject *Py_UNUSED(args))
 {
diff --git a/Modules/_testinternalcapi/test_lock.c b/Modules/_testinternalcapi/test_lock.c
index 4900459c689279..8d678412fe7179 100644
--- a/Modules/_testinternalcapi/test_lock.c
+++ b/Modules/_testinternalcapi/test_lock.c
@@ -2,6 +2,7 @@
 
 #include "parts.h"
 #include "pycore_lock.h"
+#include "pycore_pythread.h"      // PyThread_get_thread_ident_ex()
 
 #include "clinic/test_lock.c.h"
 
@@ -35,9 +36,9 @@ test_lock_basic(PyObject *self, PyObject *obj)
 
     // uncontended lock and unlock
     PyMutex_Lock(&m);
-    assert(m.v == 1);
+    assert(m._bits == 1);
     PyMutex_Unlock(&m);
-    assert(m.v == 0);
+    assert(m._bits == 0);
 
     Py_RETURN_NONE;
 }
@@ -56,10 +57,10 @@ lock_thread(void *arg)
     _Py_atomic_store_int(&test_data->started, 1);
 
     PyMutex_Lock(m);
-    assert(m->v == 1);
+    assert(m->_bits == 1);
 
     PyMutex_Unlock(m);
-    assert(m->v == 0);
+    assert(m->_bits == 0);
 
     _PyEvent_Notify(&test_data->done);
 }
@@ -72,7 +73,7 @@ test_lock_two_threads(PyObject *self, PyObject *obj)
     memset(&test_data, 0, sizeof(test_data));
 
     PyMutex_Lock(&test_data.m);
-    assert(test_data.m.v == 1);
+    assert(test_data.m._bits == 1);
 
     PyThread_start_new_thread(lock_thread, &test_data);
 
@@ -81,17 +82,17 @@ test_lock_two_threads(PyObject *self, PyObject *obj)
     uint8_t v;
     do {
         pysleep(10);  // allow some time for the other thread to try to lock
-        v = _Py_atomic_load_uint8_relaxed(&test_data.m.v);
+        v = _Py_atomic_load_uint8_relaxed(&test_data.m._bits);
         assert(v == 1 || v == 3);
         iters++;
     } while (v != 3 && iters < 200);
 
     // both the "locked" and the "has parked" bits should be set
-    assert(test_data.m.v == 3);
+    assert(test_data.m._bits == 3);
 
     PyMutex_Unlock(&test_data.m);
     PyEvent_Wait(&test_data.done);
-    assert(test_data.m.v == 0);
+    assert(test_data.m._bits == 0);
 
     Py_RETURN_NONE;
 }
@@ -476,6 +477,29 @@ test_lock_rwlock(PyObject *self, PyObject *obj)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+test_lock_recursive(PyObject *self, PyObject *obj)
+{
+    _PyRecursiveMutex m = (_PyRecursiveMutex){0};
+    assert(!_PyRecursiveMutex_IsLockedByCurrentThread(&m));
+
+    _PyRecursiveMutex_Lock(&m);
+    assert(m.thread == PyThread_get_thread_ident_ex());
+    assert(PyMutex_IsLocked(&m.mutex));
+    assert(m.level == 0);
+
+    _PyRecursiveMutex_Lock(&m);
+    assert(m.level == 1);
+    _PyRecursiveMutex_Unlock(&m);
+
+    _PyRecursiveMutex_Unlock(&m);
+    assert(m.thread == 0);
+    assert(!PyMutex_IsLocked(&m.mutex));
+    assert(m.level == 0);
+
+    Py_RETURN_NONE;
+}
+
 static PyMethodDef test_methods[] = {
     {"test_lock_basic", test_lock_basic, METH_NOARGS},
     {"test_lock_two_threads", test_lock_two_threads, METH_NOARGS},
@@ -485,6 +509,7 @@ static PyMethodDef test_methods[] = {
     {"test_lock_benchmark", test_lock_benchmark, METH_NOARGS},
     {"test_lock_once", test_lock_once, METH_NOARGS},
     {"test_lock_rwlock", test_lock_rwlock, METH_NOARGS},
+    {"test_lock_recursive", test_lock_recursive, METH_NOARGS},
     {NULL, NULL} /* sentinel */
 };
 
diff --git a/Modules/_testlimitedcapi.c b/Modules/_testlimitedcapi.c
index fb5cdb6ca9e1d3..b183df7751d8db 100644
--- a/Modules/_testlimitedcapi.c
+++ b/Modules/_testlimitedcapi.c
@@ -44,12 +44,18 @@ PyInit__testlimitedcapi(void)
     if (_PyTestLimitedCAPI_Init_Dict(mod) < 0) {
         return NULL;
     }
+    if (_PyTestLimitedCAPI_Init_Eval(mod) < 0) {
+        return NULL;
+    }
     if (_PyTestLimitedCAPI_Init_Float(mod) < 0) {
         return NULL;
     }
     if (_PyTestLimitedCAPI_Init_HeaptypeRelative(mod) < 0) {
         return NULL;
     }
+    if (_PyTestLimitedCAPI_Init_Import(mod) < 0) {
+        return NULL;
+    }
     if (_PyTestLimitedCAPI_Init_List(mod) < 0) {
         return NULL;
     }
@@ -68,11 +74,17 @@ PyInit__testlimitedcapi(void)
     if (_PyTestLimitedCAPI_Init_Sys(mod) < 0) {
         return NULL;
     }
+    if (_PyTestLimitedCAPI_Init_Tuple(mod) < 0) {
+        return NULL;
+    }
     if (_PyTestLimitedCAPI_Init_Unicode(mod) < 0) {
         return NULL;
     }
     if (_PyTestLimitedCAPI_Init_VectorcallLimited(mod) < 0) {
         return NULL;
     }
+    if (_PyTestLimitedCAPI_Init_File(mod) < 0) {
+        return NULL;
+    }
     return mod;
 }
diff --git a/Modules/_testlimitedcapi/clinic/file.c.h b/Modules/_testlimitedcapi/clinic/file.c.h
new file mode 100644
index 00000000000000..663619eead2a3a
--- /dev/null
+++ b/Modules/_testlimitedcapi/clinic/file.c.h
@@ -0,0 +1,81 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+PyDoc_STRVAR(_testcapi_pyfile_getline__doc__,
+"pyfile_getline($module, file, n, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYFILE_GETLINE_METHODDEF    \
+    {"pyfile_getline", (PyCFunction)(void(*)(void))_testcapi_pyfile_getline, METH_FASTCALL, _testcapi_pyfile_getline__doc__},
+
+static PyObject *
+_testcapi_pyfile_getline_impl(PyObject *module, PyObject *file, int n);
+
+static PyObject *
+_testcapi_pyfile_getline(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *file;
+    int n;
+
+    if (nargs != 2) {
+        PyErr_Format(PyExc_TypeError, "pyfile_getline expected 2 arguments, got %zd", nargs);
+        goto exit;
+    }
+    file = args[0];
+    n = PyLong_AsInt(args[1]);
+    if (n == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _testcapi_pyfile_getline_impl(module, file, n);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_pyfile_writeobject__doc__,
+"pyfile_writeobject($module, obj, file, flags, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYFILE_WRITEOBJECT_METHODDEF    \
+    {"pyfile_writeobject", (PyCFunction)(void(*)(void))_testcapi_pyfile_writeobject, METH_FASTCALL, _testcapi_pyfile_writeobject__doc__},
+
+static PyObject *
+_testcapi_pyfile_writeobject_impl(PyObject *module, PyObject *obj,
+                                  PyObject *file, int flags);
+
+static PyObject *
+_testcapi_pyfile_writeobject(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *obj;
+    PyObject *file;
+    int flags;
+
+    if (nargs != 3) {
+        PyErr_Format(PyExc_TypeError, "pyfile_writeobject expected 3 arguments, got %zd", nargs);
+        goto exit;
+    }
+    obj = args[0];
+    file = args[1];
+    flags = PyLong_AsInt(args[2]);
+    if (flags == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = _testcapi_pyfile_writeobject_impl(module, obj, file, flags);
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_testcapi_pyobject_asfiledescriptor__doc__,
+"pyobject_asfiledescriptor($module, obj, /)\n"
+"--\n"
+"\n");
+
+#define _TESTCAPI_PYOBJECT_ASFILEDESCRIPTOR_METHODDEF    \
+    {"pyobject_asfiledescriptor", (PyCFunction)_testcapi_pyobject_asfiledescriptor, METH_O, _testcapi_pyobject_asfiledescriptor__doc__},
+/*[clinic end generated code: output=ea572aaaa01aec7b input=a9049054013a1b77]*/
diff --git a/Modules/_testlimitedcapi/eval.c b/Modules/_testlimitedcapi/eval.c
new file mode 100644
index 00000000000000..28f5746dfb1783
--- /dev/null
+++ b/Modules/_testlimitedcapi/eval.c
@@ -0,0 +1,95 @@
+#include "parts.h"
+#include "util.h"
+
+static PyObject *
+eval_get_func_name(PyObject *self, PyObject *func)
+{
+    return PyUnicode_FromString(PyEval_GetFuncName(func));
+}
+
+static PyObject *
+eval_get_func_desc(PyObject *self, PyObject *func)
+{
+    return PyUnicode_FromString(PyEval_GetFuncDesc(func));
+}
+
+static PyObject *
+eval_getlocals(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return Py_XNewRef(PyEval_GetLocals());
+}
+
+static PyObject *
+eval_getglobals(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return Py_XNewRef(PyEval_GetGlobals());
+}
+
+static PyObject *
+eval_getbuiltins(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return Py_XNewRef(PyEval_GetBuiltins());
+}
+
+static PyObject *
+eval_getframe(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return Py_XNewRef(PyEval_GetFrame());
+}
+
+static PyObject *
+eval_getframe_builtins(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return PyEval_GetFrameBuiltins();
+}
+
+static PyObject *
+eval_getframe_globals(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return PyEval_GetFrameGlobals();
+}
+
+static PyObject *
+eval_getframe_locals(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    return PyEval_GetFrameLocals();
+}
+
+static PyObject *
+eval_get_recursion_limit(PyObject *module, PyObject *Py_UNUSED(args))
+{
+    int limit = Py_GetRecursionLimit();
+    return PyLong_FromLong(limit);
+}
+
+static PyObject *
+eval_set_recursion_limit(PyObject *module, PyObject *args)
+{
+    int limit;
+    if (!PyArg_ParseTuple(args, "i", &limit)) {
+        return NULL;
+    }
+    Py_SetRecursionLimit(limit);
+    Py_RETURN_NONE;
+}
+
+static PyMethodDef test_methods[] = {
+    {"eval_get_func_name", eval_get_func_name, METH_O, NULL},
+    {"eval_get_func_desc", eval_get_func_desc, METH_O, NULL},
+    {"eval_getlocals", eval_getlocals, METH_NOARGS},
+    {"eval_getglobals", eval_getglobals, METH_NOARGS},
+    {"eval_getbuiltins", eval_getbuiltins, METH_NOARGS},
+    {"eval_getframe", eval_getframe, METH_NOARGS},
+    {"eval_getframe_builtins", eval_getframe_builtins, METH_NOARGS},
+    {"eval_getframe_globals", eval_getframe_globals, METH_NOARGS},
+    {"eval_getframe_locals", eval_getframe_locals, METH_NOARGS},
+    {"eval_get_recursion_limit", eval_get_recursion_limit, METH_NOARGS},
+    {"eval_set_recursion_limit", eval_set_recursion_limit, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestLimitedCAPI_Init_Eval(PyObject *m)
+{
+    return PyModule_AddFunctions(m, test_methods);
+}
diff --git a/Modules/_testlimitedcapi/file.c b/Modules/_testlimitedcapi/file.c
new file mode 100644
index 00000000000000..e082e3c6700ee7
--- /dev/null
+++ b/Modules/_testlimitedcapi/file.c
@@ -0,0 +1,128 @@
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#ifndef Py_GIL_DISABLED
+   // Need limited C API 3.13 for PyLong_AsInt()
+#  define Py_LIMITED_API 0x030d0000
+#endif
+
+#include "parts.h"
+#include "util.h"
+#include "clinic/file.c.h"
+
+
+/*[clinic input]
+module _testcapi
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
+
+
+static PyObject *
+pyfile_fromfd(PyObject *module, PyObject *args)
+{
+    int fd;
+    const char *name;
+    Py_ssize_t size;
+    const char *mode;
+    int buffering;
+    const char *encoding;
+    const char *errors;
+    const char *newline;
+    int closefd;
+    if (!PyArg_ParseTuple(args,
+                          "iz#z#"
+                          "iz#z#"
+                          "z#i",
+                          &fd, &name, &size, &mode, &size,
+                          &buffering, &encoding, &size, &errors, &size,
+                          &newline, &size, &closefd)) {
+        return NULL;
+    }
+
+    return PyFile_FromFd(fd, name, mode, buffering,
+                         encoding, errors, newline, closefd);
+}
+
+
+/*[clinic input]
+_testcapi.pyfile_getline
+
+    file: object
+    n: int
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_pyfile_getline_impl(PyObject *module, PyObject *file, int n)
+/*[clinic end generated code: output=137fde2774563266 input=df26686148b3657e]*/
+{
+    return PyFile_GetLine(file, n);
+}
+
+
+/*[clinic input]
+_testcapi.pyfile_writeobject
+
+    obj: object
+    file: object
+    flags: int
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_pyfile_writeobject_impl(PyObject *module, PyObject *obj,
+                                  PyObject *file, int flags)
+/*[clinic end generated code: output=ebb4d802e3db489c input=64a34a3e75b9935a]*/
+{
+    NULLABLE(obj);
+    NULLABLE(file);
+    RETURN_INT(PyFile_WriteObject(obj, file, flags));
+}
+
+
+static PyObject *
+pyfile_writestring(PyObject *module, PyObject *args)
+{
+    const char *str;
+    Py_ssize_t size;
+    PyObject *file;
+    if (!PyArg_ParseTuple(args, "z#O", &str, &size, &file)) {
+        return NULL;
+    }
+    NULLABLE(file);
+
+    RETURN_INT(PyFile_WriteString(str, file));
+}
+
+
+/*[clinic input]
+_testcapi.pyobject_asfiledescriptor
+
+    obj: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_pyobject_asfiledescriptor(PyObject *module, PyObject *obj)
+/*[clinic end generated code: output=2d640c6a1970c721 input=45fa1171d62b18d7]*/
+{
+    NULLABLE(obj);
+    RETURN_INT(PyObject_AsFileDescriptor(obj));
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"pyfile_fromfd", pyfile_fromfd, METH_VARARGS},
+    _TESTCAPI_PYFILE_GETLINE_METHODDEF
+    _TESTCAPI_PYFILE_WRITEOBJECT_METHODDEF
+    {"pyfile_writestring", pyfile_writestring, METH_VARARGS},
+    _TESTCAPI_PYOBJECT_ASFILEDESCRIPTOR_METHODDEF
+    {NULL},
+};
+
+int
+_PyTestLimitedCAPI_Init_File(PyObject *m)
+{
+    return PyModule_AddFunctions(m, test_methods);
+}
diff --git a/Modules/_testlimitedcapi/import.c b/Modules/_testlimitedcapi/import.c
new file mode 100644
index 00000000000000..3707dbedeea0d9
--- /dev/null
+++ b/Modules/_testlimitedcapi/import.c
@@ -0,0 +1,306 @@
+// Need limited C API version 3.13 for PyImport_AddModuleRef()
+#include "pyconfig.h"   // Py_GIL_DISABLED
+#if !defined(Py_GIL_DISABLED) && !defined(Py_LIMITED_API)
+#  define Py_LIMITED_API 0x030d0000
+#endif
+
+#include "parts.h"
+#include "util.h"
+
+
+/* Test PyImport_GetMagicNumber() */
+static PyObject *
+pyimport_getmagicnumber(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    long magic = PyImport_GetMagicNumber();
+    return PyLong_FromLong(magic);
+}
+
+
+/* Test PyImport_GetMagicTag() */
+static PyObject *
+pyimport_getmagictag(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    const char *tag = PyImport_GetMagicTag();
+    return PyUnicode_FromString(tag);
+}
+
+
+/* Test PyImport_GetModuleDict() */
+static PyObject *
+pyimport_getmoduledict(PyObject *Py_UNUSED(module), PyObject *Py_UNUSED(args))
+{
+    return Py_XNewRef(PyImport_GetModuleDict());
+}
+
+
+/* Test PyImport_GetModule() */
+static PyObject *
+pyimport_getmodule(PyObject *Py_UNUSED(module), PyObject *name)
+{
+    assert(!PyErr_Occurred());
+    NULLABLE(name);
+    PyObject *module = PyImport_GetModule(name);
+    if (module == NULL && !PyErr_Occurred()) {
+        return Py_NewRef(PyExc_KeyError);
+    }
+    return module;
+}
+
+
+/* Test PyImport_AddModuleObject() */
+static PyObject *
+pyimport_addmoduleobject(PyObject *Py_UNUSED(module), PyObject *name)
+{
+    NULLABLE(name);
+    return Py_XNewRef(PyImport_AddModuleObject(name));
+}
+
+
+/* Test PyImport_AddModule() */
+static PyObject *
+pyimport_addmodule(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
+        return NULL;
+    }
+
+    return Py_XNewRef(PyImport_AddModule(name));
+}
+
+
+/* Test PyImport_AddModuleRef() */
+static PyObject *
+pyimport_addmoduleref(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
+        return NULL;
+    }
+
+    return PyImport_AddModuleRef(name);
+}
+
+
+/* Test PyImport_Import() */
+static PyObject *
+pyimport_import(PyObject *Py_UNUSED(module), PyObject *name)
+{
+    NULLABLE(name);
+    return PyImport_Import(name);
+}
+
+
+/* Test PyImport_ImportModule() */
+static PyObject *
+pyimport_importmodule(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
+        return NULL;
+    }
+
+    return PyImport_ImportModule(name);
+}
+
+
+/* Test PyImport_ImportModuleNoBlock() */
+static PyObject *
+pyimport_importmodulenoblock(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
+        return NULL;
+    }
+
+    _Py_COMP_DIAG_PUSH
+    _Py_COMP_DIAG_IGNORE_DEPR_DECLS
+    return PyImport_ImportModuleNoBlock(name);
+    _Py_COMP_DIAG_POP
+}
+
+
+/* Test PyImport_ImportModuleEx() */
+static PyObject *
+pyimport_importmoduleex(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *globals, *locals, *fromlist;
+    if (!PyArg_ParseTuple(args, "z#OOO",
+                          &name, &size, &globals, &locals, &fromlist)) {
+        return NULL;
+    }
+    NULLABLE(globals);
+    NULLABLE(locals);
+    NULLABLE(fromlist);
+
+    return PyImport_ImportModuleEx(name, globals, locals, fromlist);
+}
+
+
+/* Test PyImport_ImportModuleLevel() */
+static PyObject *
+pyimport_importmodulelevel(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *globals, *locals, *fromlist;
+    int level;
+    if (!PyArg_ParseTuple(args, "z#OOOi",
+                          &name, &size, &globals, &locals, &fromlist, &level)) {
+        return NULL;
+    }
+    NULLABLE(globals);
+    NULLABLE(locals);
+    NULLABLE(fromlist);
+
+    return PyImport_ImportModuleLevel(name, globals, locals, fromlist, level);
+}
+
+
+/* Test PyImport_ImportModuleLevelObject() */
+static PyObject *
+pyimport_importmodulelevelobject(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *name, *globals, *locals, *fromlist;
+    int level;
+    if (!PyArg_ParseTuple(args, "OOOOi",
+                          &name, &globals, &locals, &fromlist, &level)) {
+        return NULL;
+    }
+    NULLABLE(name);
+    NULLABLE(globals);
+    NULLABLE(locals);
+    NULLABLE(fromlist);
+
+    return PyImport_ImportModuleLevelObject(name, globals, locals, fromlist, level);
+}
+
+
+/* Test PyImport_ImportFrozenModule() */
+static PyObject *
+pyimport_importfrozenmodule(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
+        return NULL;
+    }
+
+    RETURN_INT(PyImport_ImportFrozenModule(name));
+}
+
+
+/* Test PyImport_ImportFrozenModuleObject() */
+static PyObject *
+pyimport_importfrozenmoduleobject(PyObject *Py_UNUSED(module), PyObject *name)
+{
+    NULLABLE(name);
+    RETURN_INT(PyImport_ImportFrozenModuleObject(name));
+}
+
+
+/* Test PyImport_ExecCodeModule() */
+static PyObject *
+pyimport_executecodemodule(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *code;
+    if (!PyArg_ParseTuple(args, "z#O", &name, &size, &code)) {
+        return NULL;
+    }
+    NULLABLE(code);
+
+    return PyImport_ExecCodeModule(name, code);
+}
+
+
+/* Test PyImport_ExecCodeModuleEx() */
+static PyObject *
+pyimport_executecodemoduleex(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *code;
+    const char *pathname;
+    if (!PyArg_ParseTuple(args, "z#Oz#", &name, &size, &code, &pathname, &size)) {
+        return NULL;
+    }
+    NULLABLE(code);
+
+    return PyImport_ExecCodeModuleEx(name, code, pathname);
+}
+
+
+/* Test PyImport_ExecCodeModuleWithPathnames() */
+static PyObject *
+pyimport_executecodemodulewithpathnames(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    const char *name;
+    Py_ssize_t size;
+    PyObject *code;
+    const char *pathname;
+    const char *cpathname;
+    if (!PyArg_ParseTuple(args, "z#Oz#z#", &name, &size, &code, &pathname, &size, &cpathname, &size)) {
+        return NULL;
+    }
+    NULLABLE(code);
+
+    return PyImport_ExecCodeModuleWithPathnames(name, code,
+                                                pathname, cpathname);
+}
+
+
+/* Test PyImport_ExecCodeModuleObject() */
+static PyObject *
+pyimport_executecodemoduleobject(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *name, *code, *pathname, *cpathname;
+    if (!PyArg_ParseTuple(args, "OOOO", &name, &code, &pathname, &cpathname)) {
+        return NULL;
+    }
+    NULLABLE(name);
+    NULLABLE(code);
+    NULLABLE(pathname);
+    NULLABLE(cpathname);
+
+    return PyImport_ExecCodeModuleObject(name, code, pathname, cpathname);
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"PyImport_GetMagicNumber", pyimport_getmagicnumber, METH_NOARGS},
+    {"PyImport_GetMagicTag", pyimport_getmagictag, METH_NOARGS},
+    {"PyImport_GetModuleDict", pyimport_getmoduledict, METH_NOARGS},
+    {"PyImport_GetModule", pyimport_getmodule, METH_O},
+    {"PyImport_AddModuleObject", pyimport_addmoduleobject, METH_O},
+    {"PyImport_AddModule", pyimport_addmodule, METH_VARARGS},
+    {"PyImport_AddModuleRef", pyimport_addmoduleref, METH_VARARGS},
+    {"PyImport_Import", pyimport_import, METH_O},
+    {"PyImport_ImportModule", pyimport_importmodule, METH_VARARGS},
+    {"PyImport_ImportModuleNoBlock", pyimport_importmodulenoblock, METH_VARARGS},
+    {"PyImport_ImportModuleEx", pyimport_importmoduleex, METH_VARARGS},
+    {"PyImport_ImportModuleLevel", pyimport_importmodulelevel, METH_VARARGS},
+    {"PyImport_ImportModuleLevelObject", pyimport_importmodulelevelobject, METH_VARARGS},
+    {"PyImport_ImportFrozenModule", pyimport_importfrozenmodule, METH_VARARGS},
+    {"PyImport_ImportFrozenModuleObject", pyimport_importfrozenmoduleobject, METH_O},
+    {"PyImport_ExecCodeModule", pyimport_executecodemodule, METH_VARARGS},
+    {"PyImport_ExecCodeModuleEx", pyimport_executecodemoduleex, METH_VARARGS},
+    {"PyImport_ExecCodeModuleWithPathnames", pyimport_executecodemodulewithpathnames, METH_VARARGS},
+    {"PyImport_ExecCodeModuleObject", pyimport_executecodemoduleobject, METH_VARARGS},
+    {NULL},
+};
+
+
+int
+_PyTestLimitedCAPI_Init_Import(PyObject *module)
+{
+    return PyModule_AddFunctions(module, test_methods);
+}
diff --git a/Modules/_testlimitedcapi/parts.h b/Modules/_testlimitedcapi/parts.h
index d5e590a8dcd679..11b2e5c6b833bb 100644
--- a/Modules/_testlimitedcapi/parts.h
+++ b/Modules/_testlimitedcapi/parts.h
@@ -27,15 +27,19 @@ int _PyTestLimitedCAPI_Init_ByteArray(PyObject *module);
 int _PyTestLimitedCAPI_Init_Bytes(PyObject *module);
 int _PyTestLimitedCAPI_Init_Complex(PyObject *module);
 int _PyTestLimitedCAPI_Init_Dict(PyObject *module);
+int _PyTestLimitedCAPI_Init_Eval(PyObject *module);
 int _PyTestLimitedCAPI_Init_Float(PyObject *module);
 int _PyTestLimitedCAPI_Init_HeaptypeRelative(PyObject *module);
+int _PyTestLimitedCAPI_Init_Import(PyObject *module);
 int _PyTestLimitedCAPI_Init_Object(PyObject *module);
 int _PyTestLimitedCAPI_Init_List(PyObject *module);
 int _PyTestLimitedCAPI_Init_Long(PyObject *module);
 int _PyTestLimitedCAPI_Init_PyOS(PyObject *module);
 int _PyTestLimitedCAPI_Init_Set(PyObject *module);
 int _PyTestLimitedCAPI_Init_Sys(PyObject *module);
+int _PyTestLimitedCAPI_Init_Tuple(PyObject *module);
 int _PyTestLimitedCAPI_Init_Unicode(PyObject *module);
 int _PyTestLimitedCAPI_Init_VectorcallLimited(PyObject *module);
+int _PyTestLimitedCAPI_Init_File(PyObject *module);
 
 #endif // Py_TESTLIMITEDCAPI_PARTS_H
diff --git a/Modules/_testlimitedcapi/tuple.c b/Modules/_testlimitedcapi/tuple.c
new file mode 100644
index 00000000000000..231ec12d517046
--- /dev/null
+++ b/Modules/_testlimitedcapi/tuple.c
@@ -0,0 +1,136 @@
+#include "parts.h"
+#include "util.h"
+
+
+static PyObject *
+tuple_check(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyTuple_Check(obj));
+}
+
+static PyObject *
+tuple_checkexact(PyObject* Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    return PyLong_FromLong(PyTuple_CheckExact(obj));
+}
+
+static PyObject *
+tuple_new(PyObject* Py_UNUSED(module), PyObject *len)
+{
+    return PyTuple_New(PyLong_AsSsize_t(len));
+}
+
+static PyObject *
+tuple_pack(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *arg1 = NULL, *arg2 = NULL;
+    Py_ssize_t size;
+
+    if (!PyArg_ParseTuple(args, "n|OO", &size, &arg1, &arg2)) {
+        return NULL;
+    }
+    if (arg1) {
+        NULLABLE(arg1);
+        if (arg2) {
+            NULLABLE(arg2);
+            return PyTuple_Pack(size, arg1, arg2);
+        }
+        return PyTuple_Pack(size, arg1);
+    }
+    return PyTuple_Pack(size);
+}
+
+static PyObject *
+tuple_size(PyObject *Py_UNUSED(module), PyObject *obj)
+{
+    NULLABLE(obj);
+    RETURN_SIZE(PyTuple_Size(obj));
+}
+
+static PyObject *
+tuple_getitem(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "On", &obj, &i)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return Py_XNewRef(PyTuple_GetItem(obj, i));
+}
+
+static PyObject *
+tuple_getslice(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj;
+    Py_ssize_t ilow, ihigh;
+    if (!PyArg_ParseTuple(args, "Onn", &obj, &ilow, &ihigh)) {
+        return NULL;
+    }
+    NULLABLE(obj);
+    return PyTuple_GetSlice(obj, ilow, ihigh);
+}
+
+static PyObject *
+tuple_setitem(PyObject *Py_UNUSED(module), PyObject *args)
+{
+    PyObject *obj, *value, *newtuple = NULL;
+    Py_ssize_t i;
+    if (!PyArg_ParseTuple(args, "OnO", &obj, &i, &value)) {
+        return NULL;
+    }
+    NULLABLE(value);
+    if (PyTuple_CheckExact(obj)) {
+        Py_ssize_t size = PyTuple_Size(obj);
+        newtuple = PyTuple_New(size);
+        if (!newtuple) {
+            return NULL;
+        }
+        for (Py_ssize_t n = 0; n < size; n++) {
+            if (PyTuple_SetItem(newtuple, n,
+                                Py_XNewRef(PyTuple_GetItem(obj, n))) == -1) {
+                Py_DECREF(newtuple);
+                return NULL;
+            }
+        }
+
+        if (PyTuple_SetItem(newtuple, i, Py_XNewRef(value)) == -1) {
+            Py_DECREF(newtuple);
+            return NULL;
+        }
+        return newtuple;
+    }
+    else {
+        NULLABLE(obj);
+
+        if (PyTuple_SetItem(obj, i, Py_XNewRef(value)) == -1) {
+            return NULL;
+        }
+        return Py_XNewRef(obj);
+    }
+}
+
+
+static PyMethodDef test_methods[] = {
+    {"tuple_check", tuple_check, METH_O},
+    {"tuple_checkexact", tuple_checkexact, METH_O},
+    {"tuple_new", tuple_new, METH_O},
+    {"tuple_pack", tuple_pack, METH_VARARGS},
+    {"tuple_size", tuple_size, METH_O},
+    {"tuple_getitem", tuple_getitem, METH_VARARGS},
+    {"tuple_getslice", tuple_getslice, METH_VARARGS},
+    {"tuple_setitem", tuple_setitem, METH_VARARGS},
+    {NULL},
+};
+
+int
+_PyTestLimitedCAPI_Init_Tuple(PyObject *m)
+{
+    if (PyModule_AddFunctions(m, test_methods) < 0) {
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/Modules/_testsinglephase.c b/Modules/_testsinglephase.c
index 448be502466e79..2c59085d15b5be 100644
--- a/Modules/_testsinglephase.c
+++ b/Modules/_testsinglephase.c
@@ -1,7 +1,7 @@
 
 /* Testing module for single-phase initialization of extension modules
 
-This file contains 5 distinct modules, meaning each as its own name
+This file contains several distinct modules, meaning each as its own name
 and its own init function (PyInit_...).  The default import system will
 only find the one matching the filename: _testsinglephase.  To load the
 others you must do so manually.  For example:
@@ -12,9 +12,13 @@ filename = _testsinglephase.__file__
 loader = importlib.machinery.ExtensionFileLoader(name, filename)
 spec = importlib.util.spec_from_file_location(name, filename, loader=loader)
 mod = importlib._bootstrap._load(spec)
+loader.exec_module(module)
+sys.modules[modname] = module
 ```
 
-Here are the 5 modules:
+(The last two lines are just for completeness.)
+
+Here are the modules:
 
 * _testsinglephase
    * def: _testsinglephase_basic,
@@ -136,6 +140,37 @@ Here are the 5 modules:
       5. increment <global>.initialized_count
    * functions: see common functions below
    * import system: same as _testsinglephase_basic_copy
+* _testsinglephase_check_cache_first
+   * def: _testsinglepahse_check_cache_first
+      * m_name: "_testsinglephase_check_cache_first"
+      * m_size: -1
+   * state: none
+   * init function:
+      * tries PyState_FindModule() first
+      * otherwise creates empty module
+   * functions: none
+   * import system: same as _testsinglephase
+* _testsinglephase_with_reinit_check_cache_first
+   * def: _testsinglepahse_with_reinit_check_cache_first
+      * m_name: "_testsinglephase_with_reinit_check_cache_first"
+      * m_size: 0
+   * state: none
+   * init function: same as _testsinglephase_check_cache_first
+   * functions: none
+   * import system: same as _testsinglephase_with_reinit
+* _testsinglephase_with_state_check_cache_first
+   * def: _testsinglepahse_with_state_check_cache_first
+      * m_name: "_testsinglephase_with_state_check_cache_first"
+      * m_size: 42
+   * state: none
+   * init function: same as _testsinglephase_check_cache_first
+   * functions: none
+   * import system: same as _testsinglephase_with_state
+
+* _testsinglephase_circular
+   Regression test for gh-123880.
+   Does not have the common attributes & methods.
+   See test_singlephase_circular test.test_import.SinglephaseInitTests.
 
 Module state:
 
@@ -650,3 +685,117 @@ PyInit__testsinglephase_with_state(void)
 finally:
     return module;
 }
+
+
+/****************************************************/
+/* the _testsinglephase_*_check_cache_first modules */
+/****************************************************/
+
+/* Each of these modules should only be freshly loaded.  That means
+   clearing the caches and each module def's m_base after each load. */
+
+static struct PyModuleDef _testsinglephase_check_cache_first = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testsinglephase_check_cache_first",
+    .m_doc = PyDoc_STR("Test module _testsinglephase_check_cache_first"),
+    .m_size = -1,  // no module state
+};
+
+PyMODINIT_FUNC
+PyInit__testsinglephase_check_cache_first(void)
+{
+    assert(_testsinglephase_check_cache_first.m_base.m_index == 0);
+    PyObject *mod = PyState_FindModule(&_testsinglephase_check_cache_first);
+    if (mod != NULL) {
+        return Py_NewRef(mod);
+    }
+    return PyModule_Create(&_testsinglephase_check_cache_first);
+}
+
+
+static struct PyModuleDef _testsinglephase_with_reinit_check_cache_first = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testsinglephase_with_reinit_check_cache_first",
+    .m_doc = PyDoc_STR("Test module _testsinglephase_with_reinit_check_cache_first"),
+    .m_size = 0,  // no module state
+};
+
+PyMODINIT_FUNC
+PyInit__testsinglephase_with_reinit_check_cache_first(void)
+{
+    assert(_testsinglephase_with_reinit_check_cache_first.m_base.m_index == 0);
+    PyObject *mod = PyState_FindModule(&_testsinglephase_with_reinit_check_cache_first);
+    if (mod != NULL) {
+        return Py_NewRef(mod);
+    }
+    return PyModule_Create(&_testsinglephase_with_reinit_check_cache_first);
+}
+
+
+static struct PyModuleDef _testsinglephase_with_state_check_cache_first = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testsinglephase_with_state_check_cache_first",
+    .m_doc = PyDoc_STR("Test module _testsinglephase_with_state_check_cache_first"),
+    .m_size = 42,  // not used
+};
+
+PyMODINIT_FUNC
+PyInit__testsinglephase_with_state_check_cache_first(void)
+{
+    assert(_testsinglephase_with_state_check_cache_first.m_base.m_index == 0);
+    PyObject *mod = PyState_FindModule(&_testsinglephase_with_state_check_cache_first);
+    if (mod != NULL) {
+        return Py_NewRef(mod);
+    }
+    return PyModule_Create(&_testsinglephase_with_state_check_cache_first);
+}
+
+
+/****************************************/
+/* the _testsinglephase_circular module */
+/****************************************/
+
+static PyObject *static_module_circular;
+
+static PyObject *
+circularmod_clear_static_var(PyObject *self, PyObject *arg)
+{
+    PyObject *result = static_module_circular;
+    static_module_circular = NULL;
+    return result;
+}
+
+static struct PyModuleDef _testsinglephase_circular = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "_testsinglephase_circular",
+    .m_doc = PyDoc_STR("Test module _testsinglephase_circular"),
+    .m_methods = (PyMethodDef[]) {
+        {"clear_static_var", circularmod_clear_static_var, METH_NOARGS,
+         "Clear the static variable and return its previous value."},
+        {NULL, NULL}           /* sentinel */
+    }
+};
+
+PyMODINIT_FUNC
+PyInit__testsinglephase_circular(void)
+{
+    if (!static_module_circular) {
+        static_module_circular = PyModule_Create(&_testsinglephase_circular);
+        if (!static_module_circular) {
+            return NULL;
+        }
+    }
+    static const char helper_mod_name[] = (
+        "test.test_import.data.circular_imports.singlephase");
+    PyObject *helper_mod = PyImport_ImportModule(helper_mod_name);
+    Py_XDECREF(helper_mod);
+    if (!helper_mod) {
+        return NULL;
+    }
+    if(PyModule_AddStringConstant(static_module_circular,
+                                  "helper_mod_name",
+                                  helper_mod_name) < 0) {
+        return NULL;
+    }
+    return Py_NewRef(static_module_circular);
+}
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 39d309729d88b8..1e63a50483b846 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -314,8 +314,8 @@ thread_run(void *boot_raw)
     // gh-108987: If _thread.start_new_thread() is called before or while
     // Python is being finalized, thread_run() can called *after*.
     // _PyRuntimeState_SetFinalizing() is called. At this point, all Python
-    // threads must exit, except of the thread calling Py_Finalize() whch holds
-    // the GIL and must not exit.
+    // threads must exit, except of the thread calling Py_Finalize() which
+    // holds the GIL and must not exit.
     //
     // At this stage, tstate can be a dangling pointer (point to freed memory),
     // it's ok to call _PyThreadState_MustExit() with a dangling pointer.
@@ -421,6 +421,7 @@ ThreadHandle_start(ThreadHandle *self, PyObject *func, PyObject *args,
     PyThread_handle_t os_handle;
     if (PyThread_start_joinable_thread(thread_run, boot, &ident, &os_handle)) {
         PyThreadState_Clear(boot->tstate);
+        PyThreadState_Delete(boot->tstate);
         thread_bootstate_free(boot, 1);
         PyErr_SetString(ThreadError, "can't start new thread");
         goto start_failed;
@@ -701,9 +702,7 @@ static PyType_Spec ThreadHandle_Type_spec = {
 
 typedef struct {
     PyObject_HEAD
-    PyThread_type_lock lock_lock;
-    PyObject *in_weakreflist;
-    char locked; /* for sanity checking */
+    PyMutex lock;
 } lockobject;
 
 static int
@@ -717,15 +716,7 @@ static void
 lock_dealloc(lockobject *self)
 {
     PyObject_GC_UnTrack(self);
-    if (self->in_weakreflist != NULL) {
-        PyObject_ClearWeakRefs((PyObject *) self);
-    }
-    if (self->lock_lock != NULL) {
-        /* Unlock the lock so it's safe to free it */
-        if (self->locked)
-            PyThread_release_lock(self->lock_lock);
-        PyThread_free_lock(self->lock_lock);
-    }
+    PyObject_ClearWeakRefs((PyObject *) self);
     PyTypeObject *tp = Py_TYPE(self);
     tp->tp_free((PyObject*)self);
     Py_DECREF(tp);
@@ -790,13 +781,12 @@ lock_PyThread_acquire_lock(lockobject *self, PyObject *args, PyObject *kwds)
     if (lock_acquire_parse_args(args, kwds, &timeout) < 0)
         return NULL;
 
-    PyLockStatus r = acquire_timed(self->lock_lock, timeout);
+    PyLockStatus r = _PyMutex_LockTimed(&self->lock, timeout,
+                                        _PY_LOCK_HANDLE_SIGNALS | _PY_LOCK_DETACH);
     if (r == PY_LOCK_INTR) {
         return NULL;
     }
 
-    if (r == PY_LOCK_ACQUIRED)
-        self->locked = 1;
     return PyBool_FromLong(r == PY_LOCK_ACQUIRED);
 }
 
@@ -827,13 +817,11 @@ static PyObject *
 lock_PyThread_release_lock(lockobject *self, PyObject *Py_UNUSED(ignored))
 {
     /* Sanity check: the lock must be locked */
-    if (!self->locked) {
+    if (_PyMutex_TryUnlock(&self->lock) < 0) {
         PyErr_SetString(ThreadError, "release unlocked lock");
         return NULL;
     }
 
-    self->locked = 0;
-    PyThread_release_lock(self->lock_lock);
     Py_RETURN_NONE;
 }
 
@@ -860,7 +848,7 @@ Release the lock.");
 static PyObject *
 lock_locked_lock(lockobject *self, PyObject *Py_UNUSED(ignored))
 {
-    return PyBool_FromLong((long)self->locked);
+    return PyBool_FromLong(PyMutex_IsLocked(&self->lock));
 }
 
 PyDoc_STRVAR(locked_doc,
@@ -879,20 +867,14 @@ static PyObject *
 lock_repr(lockobject *self)
 {
     return PyUnicode_FromFormat("<%s %s object at %p>",
-        self->locked ? "locked" : "unlocked", Py_TYPE(self)->tp_name, self);
+        PyMutex_IsLocked(&self->lock) ? "locked" : "unlocked", Py_TYPE(self)->tp_name, self);
 }
 
 #ifdef HAVE_FORK
 static PyObject *
 lock__at_fork_reinit(lockobject *self, PyObject *Py_UNUSED(args))
 {
-    if (_PyThread_at_fork_reinit(&self->lock_lock) < 0) {
-        PyErr_SetString(ThreadError, "failed to reinitialize lock at fork");
-        return NULL;
-    }
-
-    self->locked = 0;
-
+    _PyMutex_at_fork_reinit(&self->lock);
     Py_RETURN_NONE;
 }
 #endif  /* HAVE_FORK */
@@ -958,18 +940,12 @@ A lock is not owned by the thread that locked it; another thread may\n\
 unlock it.  A thread attempting to lock a lock that it has already locked\n\
 will block until another thread unlocks it.  Deadlocks may ensue.");
 
-static PyMemberDef lock_type_members[] = {
-    {"__weaklistoffset__", Py_T_PYSSIZET, offsetof(lockobject, in_weakreflist), Py_READONLY},
-    {NULL},
-};
-
 static PyType_Slot lock_type_slots[] = {
     {Py_tp_dealloc, (destructor)lock_dealloc},
     {Py_tp_repr, (reprfunc)lock_repr},
     {Py_tp_doc, (void *)lock_doc},
     {Py_tp_methods, lock_methods},
     {Py_tp_traverse, lock_traverse},
-    {Py_tp_members, lock_type_members},
     {Py_tp_new, lock_new},
     {0, 0}
 };
@@ -978,7 +954,7 @@ static PyType_Spec lock_type_spec = {
     .name = "_thread.lock",
     .basicsize = sizeof(lockobject),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-              Py_TPFLAGS_IMMUTABLETYPE),
+              Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_MANAGED_WEAKREF),
     .slots = lock_type_slots,
 };
 
@@ -1320,16 +1296,7 @@ newlockobject(PyObject *module)
     if (self == NULL) {
         return NULL;
     }
-
-    self->lock_lock = PyThread_allocate_lock();
-    self->locked = 0;
-    self->in_weakreflist = NULL;
-
-    if (self->lock_lock == NULL) {
-        Py_DECREF(self);
-        PyErr_SetString(ThreadError, "can't allocate lock");
-        return NULL;
-    }
+    self->lock = (PyMutex){0};
     return self;
 }
 
@@ -1350,33 +1317,44 @@ newlockobject(PyObject *module)
    Our implementation uses small "localdummy" objects in order to break
    the reference chain. These trivial objects are hashable (using the
    default scheme of identity hashing) and weakrefable.
-   Each thread-state holds a separate localdummy for each local object
-   (as a /strong reference/),
-   and each thread-local object holds a dict mapping /weak references/
-   of localdummies to local dicts.
+
+   Each thread-state holds two separate localdummy objects:
+
+   - `threading_local_key` is used as a key to retrieve the locals dictionary
+     for the thread in any `threading.local` object.
+   - `threading_local_sentinel` is used to signal when a thread is being
+     destroyed. Consequently, the associated thread-state must hold the only
+     reference.
+
+   Each `threading.local` object contains a dict mapping localdummy keys to
+   locals dicts and a set containing weak references to localdummy
+   sentinels. Each sentinel weak reference has a callback that removes itself
+   and the locals dict for the key from the `threading.local` object when
+   called.
 
    Therefore:
-   - only the thread-state dict holds a strong reference to the dummies
-   - only the thread-local object holds a strong reference to the local dicts
-   - only outside objects (application- or library-level) hold strong
-     references to the thread-local objects
-   - as soon as a thread-state dict is destroyed, the weakref callbacks of all
-     dummies attached to that thread are called, and destroy the corresponding
-     local dicts from thread-local objects
-   - as soon as a thread-local object is destroyed, its local dicts are
-     destroyed and its dummies are manually removed from all thread states
-   - the GC can do its work correctly when a thread-local object is dangling,
-     without any interference from the thread-state dicts
-
-   As an additional optimization, each localdummy holds a borrowed reference
-   to the corresponding localdict.  This borrowed reference is only used
-   by the thread-local object which has created the localdummy, which should
-   guarantee that the localdict still exists when accessed.
+   - The thread-state only holds strong references to localdummy objects, which
+     cannot participate in cycles.
+   - Only outside objects (application- or library-level) hold strong
+     references to the thread-local objects.
+   - As soon as thread-state's sentinel dummy is destroyed the callbacks for
+     all weakrefs attached to the sentinel are called, and destroy the
+     corresponding local dicts from thread-local objects.
+   - As soon as a thread-local object is destroyed, its local dicts are
+     destroyed.
+   - The GC can do its work correctly when a thread-local object is dangling,
+     without any interference from the thread-state dicts.
+
+   This dual key arrangement is necessary to ensure that `threading.local`
+   values can be retrieved from finalizers. If we were to only keep a mapping
+   of localdummy weakrefs to locals dicts it's possible that the weakrefs would
+   be cleared before finalizers were called (GC currently clears weakrefs that
+   are garbage before invoking finalizers), causing lookups in finalizers to
+   fail.
 */
 
 typedef struct {
     PyObject_HEAD
-    PyObject *localdict;        /* Borrowed reference! */
     PyObject *weakreflist;      /* List of weak references to self */
 } localdummyobject;
 
@@ -1413,80 +1391,60 @@ static PyType_Spec local_dummy_type_spec = {
 
 typedef struct {
     PyObject_HEAD
-    PyObject *key;
     PyObject *args;
     PyObject *kw;
     PyObject *weakreflist;      /* List of weak references to self */
-    /* A {localdummy weakref -> localdict} dict */
-    PyObject *dummies;
-    /* The callback for weakrefs to localdummies */
-    PyObject *wr_callback;
+    /* A {localdummy -> localdict} dict */
+    PyObject *localdicts;
+    /* A set of weakrefs to thread sentinels localdummies*/
+    PyObject *thread_watchdogs;
 } localobject;
 
 /* Forward declaration */
-static PyObject *_ldict(localobject *self, thread_module_state *state);
-static PyObject *_localdummy_destroyed(PyObject *meth_self, PyObject *dummyweakref);
+static int create_localsdict(localobject *self, thread_module_state *state,
+                             PyObject **localsdict, PyObject **sentinel_wr);
+static PyObject *clear_locals(PyObject *meth_self, PyObject *dummyweakref);
 
-/* Create and register the dummy for the current thread.
-   Returns a borrowed reference of the corresponding local dict */
+/* Create a weakref to the sentinel localdummy for the current thread */
 static PyObject *
-_local_create_dummy(localobject *self, thread_module_state *state)
+create_sentinel_wr(localobject *self)
 {
-    PyObject *ldict = NULL, *wr = NULL;
-    localdummyobject *dummy = NULL;
-    PyTypeObject *type = state->local_dummy_type;
+    static PyMethodDef wr_callback_def = {
+        "clear_locals", (PyCFunction) clear_locals, METH_O
+    };
 
-    PyObject *tdict = PyThreadState_GetDict();
-    if (tdict == NULL) {
-        PyErr_SetString(PyExc_SystemError,
-                        "Couldn't get thread-state dictionary");
-        goto err;
-    }
+    PyThreadState *tstate = PyThreadState_Get();
 
-    ldict = PyDict_New();
-    if (ldict == NULL) {
-        goto err;
-    }
-    dummy = (localdummyobject *) type->tp_alloc(type, 0);
-    if (dummy == NULL) {
-        goto err;
-    }
-    dummy->localdict = ldict;
-    wr = PyWeakref_NewRef((PyObject *) dummy, self->wr_callback);
-    if (wr == NULL) {
-        goto err;
+    /* We use a weak reference to self in the callback closure
+       in order to avoid spurious reference cycles */
+    PyObject *self_wr = PyWeakref_NewRef((PyObject *) self, NULL);
+    if (self_wr == NULL) {
+        return NULL;
     }
 
-    /* As a side-effect, this will cache the weakref's hash before the
-       dummy gets deleted */
-    int r = PyDict_SetItem(self->dummies, wr, ldict);
-    if (r < 0) {
-        goto err;
+    PyObject *args = PyTuple_New(2);
+    if (args == NULL) {
+        Py_DECREF(self_wr);
+        return NULL;
     }
-    Py_CLEAR(wr);
-    r = PyDict_SetItem(tdict, self->key, (PyObject *) dummy);
-    if (r < 0) {
-        goto err;
+    PyTuple_SET_ITEM(args, 0, self_wr);
+    PyTuple_SET_ITEM(args, 1, Py_NewRef(tstate->threading_local_key));
+
+    PyObject *cb = PyCFunction_New(&wr_callback_def, args);
+    Py_DECREF(args);
+    if (cb == NULL) {
+        return NULL;
     }
-    Py_CLEAR(dummy);
 
-    Py_DECREF(ldict);
-    return ldict;
+    PyObject *wr = PyWeakref_NewRef(tstate->threading_local_sentinel, cb);
+    Py_DECREF(cb);
 
-err:
-    Py_XDECREF(ldict);
-    Py_XDECREF(wr);
-    Py_XDECREF(dummy);
-    return NULL;
+    return wr;
 }
 
 static PyObject *
 local_new(PyTypeObject *type, PyObject *args, PyObject *kw)
 {
-    static PyMethodDef wr_callback_def = {
-        "_localdummy_destroyed", (PyCFunction) _localdummy_destroyed, METH_O
-    };
-
     if (type->tp_init == PyBaseObject_Type.tp_init) {
         int rc = 0;
         if (args != NULL)
@@ -1513,30 +1471,25 @@ local_new(PyTypeObject *type, PyObject *args, PyObject *kw)
 
     self->args = Py_XNewRef(args);
     self->kw = Py_XNewRef(kw);
-    self->key = PyUnicode_FromFormat("thread.local.%p", self);
-    if (self->key == NULL) {
-        goto err;
-    }
 
-    self->dummies = PyDict_New();
-    if (self->dummies == NULL) {
+    self->localdicts = PyDict_New();
+    if (self->localdicts == NULL) {
         goto err;
     }
 
-    /* We use a weak reference to self in the callback closure
-       in order to avoid spurious reference cycles */
-    PyObject *wr = PyWeakref_NewRef((PyObject *) self, NULL);
-    if (wr == NULL) {
-        goto err;
-    }
-    self->wr_callback = PyCFunction_NewEx(&wr_callback_def, wr, NULL);
-    Py_DECREF(wr);
-    if (self->wr_callback == NULL) {
+    self->thread_watchdogs = PySet_New(NULL);
+    if (self->thread_watchdogs == NULL) {
         goto err;
     }
-    if (_local_create_dummy(self, state) == NULL) {
+
+    PyObject *localsdict = NULL;
+    PyObject *sentinel_wr = NULL;
+    if (create_localsdict(self, state, &localsdict, &sentinel_wr) < 0) {
         goto err;
     }
+    Py_DECREF(localsdict);
+    Py_DECREF(sentinel_wr);
+
     return (PyObject *)self;
 
   err:
@@ -1550,7 +1503,8 @@ local_traverse(localobject *self, visitproc visit, void *arg)
     Py_VISIT(Py_TYPE(self));
     Py_VISIT(self->args);
     Py_VISIT(self->kw);
-    Py_VISIT(self->dummies);
+    Py_VISIT(self->localdicts);
+    Py_VISIT(self->thread_watchdogs);
     return 0;
 }
 
@@ -1559,27 +1513,8 @@ local_clear(localobject *self)
 {
     Py_CLEAR(self->args);
     Py_CLEAR(self->kw);
-    Py_CLEAR(self->dummies);
-    Py_CLEAR(self->wr_callback);
-    /* Remove all strong references to dummies from the thread states */
-    if (self->key) {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
-        _PyRuntimeState *runtime = &_PyRuntime;
-        HEAD_LOCK(runtime);
-        PyThreadState *tstate = PyInterpreterState_ThreadHead(interp);
-        HEAD_UNLOCK(runtime);
-        while (tstate) {
-            if (tstate->dict) {
-                if (PyDict_Pop(tstate->dict, self->key, NULL) < 0) {
-                    // Silently ignore error
-                    PyErr_Clear();
-                }
-            }
-            HEAD_LOCK(runtime);
-            tstate = PyThreadState_Next(tstate);
-            HEAD_UNLOCK(runtime);
-        }
-    }
+    Py_CLEAR(self->localdicts);
+    Py_CLEAR(self->thread_watchdogs);
     return 0;
 }
 
@@ -1595,48 +1530,142 @@ local_dealloc(localobject *self)
     PyObject_GC_UnTrack(self);
 
     local_clear(self);
-    Py_XDECREF(self->key);
 
     PyTypeObject *tp = Py_TYPE(self);
     tp->tp_free((PyObject*)self);
     Py_DECREF(tp);
 }
 
-/* Returns a borrowed reference to the local dict, creating it if necessary */
+/* Create the TLS key and sentinel if they don't exist */
+static int
+create_localdummies(thread_module_state *state)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+
+    if (tstate->threading_local_key != NULL) {
+        return 0;
+    }
+
+    PyTypeObject *ld_type = state->local_dummy_type;
+    tstate->threading_local_key = ld_type->tp_alloc(ld_type, 0);
+    if (tstate->threading_local_key == NULL) {
+        return -1;
+    }
+
+    tstate->threading_local_sentinel = ld_type->tp_alloc(ld_type, 0);
+    if (tstate->threading_local_sentinel == NULL) {
+        Py_CLEAR(tstate->threading_local_key);
+        return -1;
+    }
+
+    return 0;
+}
+
+/* Insert a localsdict and sentinel weakref for the current thread, placing
+   strong references in localsdict and sentinel_wr, respectively.
+*/
+static int
+create_localsdict(localobject *self, thread_module_state *state,
+                  PyObject **localsdict, PyObject **sentinel_wr)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+    PyObject *ldict = NULL;
+    PyObject *wr = NULL;
+
+    if (create_localdummies(state) < 0) {
+        goto err;
+    }
+
+    /* Create and insert the locals dict and sentinel weakref */
+    ldict = PyDict_New();
+    if (ldict == NULL) {
+        goto err;
+    }
+
+    if (PyDict_SetItem(self->localdicts, tstate->threading_local_key, ldict) <
+        0) {
+        goto err;
+    }
+
+    wr = create_sentinel_wr(self);
+    if (wr == NULL) {
+        PyObject *exc = PyErr_GetRaisedException();
+        if (PyDict_DelItem(self->localdicts, tstate->threading_local_key) <
+            0) {
+            PyErr_WriteUnraisable((PyObject *)self);
+        }
+        PyErr_SetRaisedException(exc);
+        goto err;
+    }
+
+    if (PySet_Add(self->thread_watchdogs, wr) < 0) {
+        PyObject *exc = PyErr_GetRaisedException();
+        if (PyDict_DelItem(self->localdicts, tstate->threading_local_key) <
+            0) {
+            PyErr_WriteUnraisable((PyObject *)self);
+        }
+        PyErr_SetRaisedException(exc);
+        goto err;
+    }
+
+    *localsdict = ldict;
+    *sentinel_wr = wr;
+    return 0;
+
+err:
+    Py_XDECREF(ldict);
+    Py_XDECREF(wr);
+    return -1;
+}
+
+/* Return a strong reference to the locals dict for the current thread,
+   creating it if necessary.
+*/
 static PyObject *
 _ldict(localobject *self, thread_module_state *state)
 {
-    PyObject *tdict = PyThreadState_GetDict();
-    if (tdict == NULL) {
-        PyErr_SetString(PyExc_SystemError,
-                        "Couldn't get thread-state dictionary");
+    if (create_localdummies(state) < 0) {
         return NULL;
     }
 
+    /* Check if a localsdict already exists */
     PyObject *ldict;
-    PyObject *dummy = PyDict_GetItemWithError(tdict, self->key);
-    if (dummy == NULL) {
-        if (PyErr_Occurred()) {
-            return NULL;
-        }
-        ldict = _local_create_dummy(self, state);
-        if (ldict == NULL)
-            return NULL;
+    PyThreadState *tstate = _PyThreadState_GET();
+    if (PyDict_GetItemRef(self->localdicts, tstate->threading_local_key,
+                          &ldict) < 0) {
+        return NULL;
+    }
+    if (ldict != NULL) {
+        return ldict;
+    }
 
-        if (Py_TYPE(self)->tp_init != PyBaseObject_Type.tp_init &&
-            Py_TYPE(self)->tp_init((PyObject*)self,
-                                   self->args, self->kw) < 0) {
-            /* we need to get rid of ldict from thread so
-               we create a new one the next time we do an attr
-               access */
-            PyDict_DelItem(tdict, self->key);
-            return NULL;
-        }
+    /* threading.local hasn't been instantiated for this thread */
+    PyObject *wr;
+    if (create_localsdict(self, state, &ldict, &wr) < 0) {
+        return NULL;
     }
-    else {
-        assert(Py_IS_TYPE(dummy, state->local_dummy_type));
-        ldict = ((localdummyobject *) dummy)->localdict;
+
+    /* run __init__ if we're a subtype of `threading.local` */
+    if (Py_TYPE(self)->tp_init != PyBaseObject_Type.tp_init &&
+        Py_TYPE(self)->tp_init((PyObject *)self, self->args, self->kw) < 0) {
+        /* we need to get rid of ldict from thread so
+           we create a new one the next time we do an attr
+           access */
+        PyObject *exc = PyErr_GetRaisedException();
+        if (PyDict_DelItem(self->localdicts, tstate->threading_local_key) <
+            0) {
+            PyErr_WriteUnraisable((PyObject *)self);
+            PyErr_Clear();
+        }
+        if (PySet_Discard(self->thread_watchdogs, wr) < 0) {
+            PyErr_WriteUnraisable((PyObject *)self);
+        }
+        PyErr_SetRaisedException(exc);
+        Py_DECREF(ldict);
+        Py_DECREF(wr);
+        return NULL;
     }
+    Py_DECREF(wr);
 
     return ldict;
 }
@@ -1650,21 +1679,28 @@ local_setattro(localobject *self, PyObject *name, PyObject *v)
 
     PyObject *ldict = _ldict(self, state);
     if (ldict == NULL) {
-        return -1;
+        goto err;
     }
 
     int r = PyObject_RichCompareBool(name, &_Py_ID(__dict__), Py_EQ);
     if (r == -1) {
-        return -1;
+        goto err;
     }
     if (r == 1) {
         PyErr_Format(PyExc_AttributeError,
-                     "'%.100s' object attribute '%U' is read-only",
+                     "'%.100s' object attribute %R is read-only",
                      Py_TYPE(self)->tp_name, name);
-        return -1;
+        goto err;
     }
 
-    return _PyObject_GenericSetAttrWithDict((PyObject *)self, name, v, ldict);
+    int st =
+        _PyObject_GenericSetAttrWithDict((PyObject *)self, name, v, ldict);
+    Py_DECREF(ldict);
+    return st;
+
+err:
+    Py_XDECREF(ldict);
+    return -1;
 }
 
 static PyObject *local_getattro(localobject *, PyObject *);
@@ -1707,34 +1743,42 @@ local_getattro(localobject *self, PyObject *name)
 
     int r = PyObject_RichCompareBool(name, &_Py_ID(__dict__), Py_EQ);
     if (r == 1) {
-        return Py_NewRef(ldict);
+        return ldict;
     }
     if (r == -1) {
+        Py_DECREF(ldict);
         return NULL;
     }
 
     if (!Py_IS_TYPE(self, state->local_type)) {
         /* use generic lookup for subtypes */
-        return _PyObject_GenericGetAttrWithDict((PyObject *)self, name,
-                                                ldict, 0);
+        PyObject *res =
+            _PyObject_GenericGetAttrWithDict((PyObject *)self, name, ldict, 0);
+        Py_DECREF(ldict);
+        return res;
     }
 
     /* Optimization: just look in dict ourselves */
     PyObject *value;
     if (PyDict_GetItemRef(ldict, name, &value) != 0) {
         // found or error
+        Py_DECREF(ldict);
         return value;
     }
 
     /* Fall back on generic to get __class__ and __dict__ */
-    return _PyObject_GenericGetAttrWithDict(
-        (PyObject *)self, name, ldict, 0);
+    PyObject *res =
+        _PyObject_GenericGetAttrWithDict((PyObject *)self, name, ldict, 0);
+    Py_DECREF(ldict);
+    return res;
 }
 
-/* Called when a dummy is destroyed. */
+/* Called when a dummy is destroyed, indicating that the owning thread is being
+ * cleared. */
 static PyObject *
-_localdummy_destroyed(PyObject *localweakref, PyObject *dummyweakref)
+clear_locals(PyObject *locals_and_key, PyObject *dummyweakref)
 {
+    PyObject *localweakref = PyTuple_GetItem(locals_and_key, 0);
     localobject *self = (localobject *)_PyWeakref_GET_REF(localweakref);
     if (self == NULL) {
         Py_RETURN_NONE;
@@ -1742,11 +1786,18 @@ _localdummy_destroyed(PyObject *localweakref, PyObject *dummyweakref)
 
     /* If the thread-local object is still alive and not being cleared,
        remove the corresponding local dict */
-    if (self->dummies != NULL) {
-        if (PyDict_Pop(self->dummies, dummyweakref, NULL) < 0) {
+    if (self->localdicts != NULL) {
+        PyObject *key = PyTuple_GetItem(locals_and_key, 1);
+        if (PyDict_Pop(self->localdicts, key, NULL) < 0) {
             PyErr_WriteUnraisable((PyObject*)self);
         }
     }
+    if (self->thread_watchdogs != NULL) {
+        if (PySet_Discard(self->thread_watchdogs, dummyweakref) < 0) {
+            PyErr_WriteUnraisable((PyObject *)self);
+        }
+    }
+
     Py_DECREF(self);
     Py_RETURN_NONE;
 }
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index c7e271faa4cf34..a2f0cf2b01acc4 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -69,6 +69,12 @@ Copyright (C) 1994 Steen Lumholt.
 #define USE_DEPRECATED_TOMMATH_API 1
 #endif
 
+// As suggested by https://core.tcl-lang.org/tcl/wiki?name=Migrating+C+extensions+to+Tcl+9
+#ifndef TCL_SIZE_MAX
+typedef int Tcl_Size;
+#define TCL_SIZE_MAX INT_MAX
+#endif
+
 #if !(defined(MS_WINDOWS) || defined(__CYGWIN__))
 #define HAVE_CREATEFILEHANDLER
 #endif
@@ -137,7 +143,7 @@ _get_tcl_lib_path(void)
         struct stat stat_buf;
         int stat_return_value;
 
-        PyObject *prefix = PySys_GetObject("prefix");  // borrowed reference
+        PyObject *prefix = PySys_GetObject("base_prefix");  // borrowed reference
         if (prefix == NULL) {
             return NULL;
         }
@@ -318,6 +324,7 @@ typedef struct {
     const Tcl_ObjType *BignumType;
     const Tcl_ObjType *ListType;
     const Tcl_ObjType *StringType;
+    const Tcl_ObjType *UTF32StringType;
 } TkappObject;
 
 #define Tkapp_Interp(v) (((TkappObject *) (v))->interp)
@@ -486,24 +493,28 @@ unicodeFromTclString(const char *s)
 }
 
 static PyObject *
-unicodeFromTclObj(Tcl_Obj *value)
+unicodeFromTclObj(TkappObject *tkapp, Tcl_Obj *value)
 {
-    int len;
+    Tcl_Size len;
 #if USE_TCL_UNICODE
-    int byteorder = NATIVE_BYTEORDER;
-    const Tcl_UniChar *u = Tcl_GetUnicodeFromObj(value, &len);
-    if (sizeof(Tcl_UniChar) == 2)
-        return PyUnicode_DecodeUTF16((const char *)u, len * 2,
-                                     "surrogatepass", &byteorder);
-    else if (sizeof(Tcl_UniChar) == 4)
-        return PyUnicode_DecodeUTF32((const char *)u, len * 4,
-                                     "surrogatepass", &byteorder);
-    else
-        Py_UNREACHABLE();
-#else
+    if (value->typePtr != NULL && tkapp != NULL &&
+        (value->typePtr == tkapp->StringType ||
+         value->typePtr == tkapp->UTF32StringType))
+    {
+        int byteorder = NATIVE_BYTEORDER;
+        const Tcl_UniChar *u = Tcl_GetUnicodeFromObj(value, &len);
+        if (sizeof(Tcl_UniChar) == 2)
+            return PyUnicode_DecodeUTF16((const char *)u, len * 2,
+                                         "surrogatepass", &byteorder);
+        else if (sizeof(Tcl_UniChar) == 4)
+            return PyUnicode_DecodeUTF32((const char *)u, len * 4,
+                                         "surrogatepass", &byteorder);
+        else
+            Py_UNREACHABLE();
+    }
+#endif /* USE_TCL_UNICODE */
     const char *s = Tcl_GetStringFromObj(value, &len);
     return unicodeFromTclStringAndSize(s, len);
-#endif
 }
 
 /*[clinic input]
@@ -516,6 +527,10 @@ class _tkinter.tktimertoken "TkttObject *" "&Tktt_Type_spec"
 
 /**** Tkapp Object ****/
 
+#if TK_MAJOR_VERSION >= 9
+int Tcl_AppInit(Tcl_Interp *);
+#endif
+
 #ifndef WITH_APPINIT
 int
 Tcl_AppInit(Tcl_Interp *interp)
@@ -588,14 +603,40 @@ Tkapp_New(const char *screenName, const char *className,
     }
 
     v->OldBooleanType = Tcl_GetObjType("boolean");
-    v->BooleanType = Tcl_GetObjType("booleanString");
-    v->ByteArrayType = Tcl_GetObjType("bytearray");
+    {
+        Tcl_Obj *value;
+        int boolValue;
+
+        /* Tcl 8.5 "booleanString" type is not registered
+           and is renamed to "boolean" in Tcl 9.0.
+           Based on approach suggested at
+           https://core.tcl-lang.org/tcl/info/3bb3bcf2da5b */
+        value = Tcl_NewStringObj("true", -1);
+        Tcl_GetBooleanFromObj(NULL, value, &boolValue);
+        v->BooleanType = value->typePtr;
+        Tcl_DecrRefCount(value);
+
+        // "bytearray" type is not registered in Tcl 9.0
+        value = Tcl_NewByteArrayObj(NULL, 0);
+        v->ByteArrayType = value->typePtr;
+        Tcl_DecrRefCount(value);
+    }
     v->DoubleType = Tcl_GetObjType("double");
+    /* TIP 484 suggests retrieving the "int" type without Tcl_GetObjType("int")
+       since it is no longer registered in Tcl 9.0. But even though Tcl 8.7
+       only uses the "wideInt" type on platforms with 32-bit long, it still has
+       a registered "int" type, which FromObj() should recognize just in case. */
     v->IntType = Tcl_GetObjType("int");
+    if (v->IntType == NULL) {
+        Tcl_Obj *value = Tcl_NewIntObj(0);
+        v->IntType = value->typePtr;
+        Tcl_DecrRefCount(value);
+    }
     v->WideIntType = Tcl_GetObjType("wideInt");
     v->BignumType = Tcl_GetObjType("bignum");
     v->ListType = Tcl_GetObjType("list");
     v->StringType = Tcl_GetObjType("string");
+    v->UTF32StringType = Tcl_GetObjType("utf32string");
 
     /* Delete the 'exit' command, which can screw things up */
     Tcl_DeleteCommand(v->interp, "exit");
@@ -756,7 +797,7 @@ PyTclObject_string(PyObject *_self, void *ignored)
 {
     PyTclObject *self = (PyTclObject *)_self;
     if (!self->string) {
-        self->string = unicodeFromTclObj(self->value);
+        self->string = unicodeFromTclObj(NULL, self->value);
         if (!self->string)
             return NULL;
     }
@@ -771,7 +812,7 @@ PyTclObject_str(PyObject *_self)
         return Py_NewRef(self->string);
     }
     /* XXX Could cache result if it is non-ASCII. */
-    return unicodeFromTclObj(self->value);
+    return unicodeFromTclObj(NULL, self->value);
 }
 
 static PyObject *
@@ -977,7 +1018,9 @@ AsObj(PyObject *value)
             PyErr_SetString(PyExc_OverflowError, "string is too long");
             return NULL;
         }
-        if (PyUnicode_IS_ASCII(value)) {
+        if (PyUnicode_IS_ASCII(value) &&
+            strlen(PyUnicode_DATA(value)) == (size_t)PyUnicode_GET_LENGTH(value))
+        {
             return Tcl_NewStringObj((const char *)PyUnicode_DATA(value),
                                     (int)size);
         }
@@ -992,9 +1035,6 @@ AsObj(PyObject *value)
                     "surrogatepass", NATIVE_BYTEORDER);
         else
             Py_UNREACHABLE();
-#else
-        encoded = _PyUnicode_AsUTF8String(value, "surrogateescape");
-#endif
         if (!encoded) {
             return NULL;
         }
@@ -1004,12 +1044,39 @@ AsObj(PyObject *value)
             PyErr_SetString(PyExc_OverflowError, "string is too long");
             return NULL;
         }
-#if USE_TCL_UNICODE
         result = Tcl_NewUnicodeObj((const Tcl_UniChar *)PyBytes_AS_STRING(encoded),
                                    (int)(size / sizeof(Tcl_UniChar)));
 #else
+        encoded = _PyUnicode_AsUTF8String(value, "surrogateescape");
+        if (!encoded) {
+            return NULL;
+        }
+        size = PyBytes_GET_SIZE(encoded);
+        if (strlen(PyBytes_AS_STRING(encoded)) != (size_t)size) {
+            /* The string contains embedded null characters.
+             * Tcl needs a null character to be represented as \xc0\x80 in
+             * the Modified UTF-8 encoding.  Otherwise the string can be
+             * truncated in some internal operations.
+             *
+             * NOTE: stringlib_replace() could be used here, but optimizing
+             * this obscure case isn't worth it unless stringlib_replace()
+             * was already exposed in the C API for other reasons. */
+            Py_SETREF(encoded,
+                      PyObject_CallMethod(encoded, "replace", "y#y#",
+                                          "\0", (Py_ssize_t)1,
+                                          "\xc0\x80", (Py_ssize_t)2));
+            if (!encoded) {
+                return NULL;
+            }
+            size = PyBytes_GET_SIZE(encoded);
+        }
+        if (size > INT_MAX) {
+            Py_DECREF(encoded);
+            PyErr_SetString(PyExc_OverflowError, "string is too long");
+            return NULL;
+        }
         result = Tcl_NewStringObj(PyBytes_AS_STRING(encoded), (int)size);
-#endif
+#endif /* USE_TCL_UNICODE */
         Py_DECREF(encoded);
         return result;
     }
@@ -1106,7 +1173,7 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
     Tcl_Interp *interp = Tkapp_Interp(tkapp);
 
     if (value->typePtr == NULL) {
-        return unicodeFromTclObj(value);
+        return unicodeFromTclObj(tkapp, value);
     }
 
     if (value->typePtr == tkapp->BooleanType ||
@@ -1115,7 +1182,7 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
     }
 
     if (value->typePtr == tkapp->ByteArrayType) {
-        int size;
+        Tcl_Size size;
         char *data = (char*)Tcl_GetByteArrayFromObj(value, &size);
         return PyBytes_FromStringAndSize(data, size);
     }
@@ -1124,14 +1191,6 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
         return PyFloat_FromDouble(value->internalRep.doubleValue);
     }
 
-    if (value->typePtr == tkapp->IntType) {
-        long longValue;
-        if (Tcl_GetLongFromObj(interp, value, &longValue) == TCL_OK)
-            return PyLong_FromLong(longValue);
-        /* If there is an error in the long conversion,
-           fall through to wideInt handling. */
-    }
-
     if (value->typePtr == tkapp->IntType ||
         value->typePtr == tkapp->WideIntType) {
         result = fromWideIntObj(tkapp, value);
@@ -1149,8 +1208,8 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
     }
 
     if (value->typePtr == tkapp->ListType) {
-        int size;
-        int i, status;
+        Tcl_Size i, size;
+        int status;
         PyObject *elem;
         Tcl_Obj *tcl_elem;
 
@@ -1176,15 +1235,10 @@ FromObj(TkappObject *tkapp, Tcl_Obj *value)
         return result;
     }
 
-    if (value->typePtr == tkapp->StringType) {
-        return unicodeFromTclObj(value);
-    }
-
-    if (tkapp->BooleanType == NULL &&
-        strcmp(value->typePtr->name, "booleanString") == 0) {
-        /* booleanString type is not registered in Tcl */
-        tkapp->BooleanType = value->typePtr;
-        return fromBoolean(tkapp, value);
+    if (value->typePtr == tkapp->StringType ||
+        value->typePtr == tkapp->UTF32StringType)
+    {
+        return unicodeFromTclObj(tkapp, value);
     }
 
     if (tkapp->BignumType == NULL &&
@@ -1211,9 +1265,9 @@ typedef struct Tkapp_CallEvent {
 } Tkapp_CallEvent;
 
 static void
-Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc)
+Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, Tcl_Size objc)
 {
-    int i;
+    Tcl_Size i;
     for (i = 0; i < objc; i++)
         Tcl_DecrRefCount(objv[i]);
     if (objv != objStore)
@@ -1224,7 +1278,7 @@ Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc)
    interpreter thread, which may or may not be the calling thread. */
 
 static Tcl_Obj**
-Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc)
+Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, Tcl_Size *pobjc)
 {
     Tcl_Obj **objv = objStore;
     Py_ssize_t objc = 0, i;
@@ -1272,10 +1326,10 @@ Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc)
             Tcl_IncrRefCount(objv[i]);
         }
     }
-    *pobjc = (int)objc;
+    *pobjc = (Tcl_Size)objc;
     return objv;
 finally:
-    Tkapp_CallDeallocArgs(objv, objStore, (int)objc);
+    Tkapp_CallDeallocArgs(objv, objStore, (Tcl_Size)objc);
     return NULL;
 }
 
@@ -1284,7 +1338,7 @@ Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc)
 static PyObject *
 Tkapp_UnicodeResult(TkappObject *self)
 {
-    return unicodeFromTclObj(Tcl_GetObjResult(self->interp));
+    return unicodeFromTclObj(self, Tcl_GetObjResult(self->interp));
 }
 
 
@@ -1303,7 +1357,7 @@ Tkapp_ObjectResult(TkappObject *self)
         res = FromObj(self, value);
         Tcl_DecrRefCount(value);
     } else {
-        res = unicodeFromTclObj(value);
+        res = unicodeFromTclObj(self, value);
     }
     return res;
 }
@@ -1342,7 +1396,7 @@ Tkapp_CallProc(Tcl_Event *evPtr, int flags)
     Tkapp_CallEvent *e = (Tkapp_CallEvent *)evPtr;
     Tcl_Obj *objStore[ARGSZ];
     Tcl_Obj **objv;
-    int objc;
+    Tcl_Size objc;
     int i;
     ENTER_PYTHON
     if (e->self->trace && !Tkapp_Trace(e->self, PyTuple_Pack(1, e->args))) {
@@ -1398,7 +1452,7 @@ Tkapp_Call(PyObject *selfptr, PyObject *args)
 {
     Tcl_Obj *objStore[ARGSZ];
     Tcl_Obj **objv = NULL;
-    int objc, i;
+    Tcl_Size objc;
     PyObject *res = NULL;
     TkappObject *self = (TkappObject*)selfptr;
     int flags = TCL_EVAL_DIRECT | TCL_EVAL_GLOBAL;
@@ -1445,6 +1499,7 @@ Tkapp_Call(PyObject *selfptr, PyObject *args)
     {
         TRACE(self, ("(O)", args));
 
+        int i;
         objv = Tkapp_CallArgs(args, objStore, &objc);
         if (!objv)
             return NULL;
@@ -1834,7 +1889,7 @@ GetVar(TkappObject *self, PyObject *args, int flags)
             res = FromObj(self, tres);
         }
         else {
-            res = unicodeFromTclObj(tres);
+            res = unicodeFromTclObj(self, tres);
         }
     }
     LEAVE_OVERLAP_TCL
@@ -2179,13 +2234,12 @@ _tkinter_tkapp_splitlist(TkappObject *self, PyObject *arg)
 /*[clinic end generated code: output=13b51d34386d36fb input=2b2e13351e3c0b53]*/
 {
     char *list;
-    int argc;
+    Tcl_Size argc, i;
     const char **argv;
     PyObject *v;
-    int i;
 
     if (PyTclObject_Check(arg)) {
-        int objc;
+        Tcl_Size objc;
         Tcl_Obj **objv;
         if (Tcl_ListObjGetElements(Tkapp_Interp(self),
                                    ((PyTclObject*)arg)->value,
@@ -2282,7 +2336,7 @@ PythonCmd(ClientData clientData, Tcl_Interp *interp,
 
     for (i = 0; i < (objc - 1); i++) {
         PyObject *s = objargs ? FromObj(data->self, objv[i + 1])
-                              : unicodeFromTclObj(objv[i + 1]);
+                              : unicodeFromTclObj(data->self, objv[i + 1]);
         if (!s) {
             Py_DECREF(args);
             return PythonCmd_Error(interp);
diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index 887a1e820e250e..0b85187e5fce07 100644
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -223,10 +223,5 @@ PyInit__tracemalloc(void)
     PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
 #endif
 
-    if (_PyTraceMalloc_Init() < 0) {
-        Py_DECREF(m);
-        return NULL;
-    }
-
     return m;
 }
diff --git a/Modules/_weakref.c b/Modules/_weakref.c
index a5c15c0f10b930..ecaa08ff60f203 100644
--- a/Modules/_weakref.c
+++ b/Modules/_weakref.c
@@ -31,7 +31,7 @@ _weakref_getweakrefcount_impl(PyObject *module, PyObject *object)
 
 
 static int
-is_dead_weakref(PyObject *value)
+is_dead_weakref(PyObject *value, void *unused)
 {
     if (!PyWeakref_Check(value)) {
         PyErr_SetString(PyExc_TypeError, "not a weakref");
@@ -56,15 +56,8 @@ _weakref__remove_dead_weakref_impl(PyObject *module, PyObject *dct,
                                    PyObject *key)
 /*[clinic end generated code: output=d9ff53061fcb875c input=19fc91f257f96a1d]*/
 {
-    if (_PyDict_DelItemIf(dct, key, is_dead_weakref) < 0) {
-        if (PyErr_ExceptionMatches(PyExc_KeyError))
-            /* This function is meant to allow safe weak-value dicts
-               with GC in another thread (see issue #28427), so it's
-               ok if the key doesn't exist anymore.
-               */
-            PyErr_Clear();
-        else
-            return NULL;
+    if (_PyDict_DelItemIf(dct, key, is_dead_weakref, NULL) < 0) {
+        return NULL;
     }
     Py_RETURN_NONE;
 }
diff --git a/Modules/_winapi.c b/Modules/_winapi.c
index cd5dd503abe61f..d51586e60257d2 100644
--- a/Modules/_winapi.c
+++ b/Modules/_winapi.c
@@ -224,7 +224,6 @@ create_converter('LPCVOID', '" F_POINTER "')
 
 create_converter('BOOL', 'i') # F_BOOL used previously (always 'i')
 create_converter('DWORD', 'k') # F_DWORD is always "k" (which is much shorter)
-create_converter('LPCTSTR', 's')
 create_converter('UINT', 'I') # F_UINT used previously (always 'I')
 
 class LPCWSTR_converter(Py_UNICODE_converter):
@@ -259,7 +258,7 @@ class LPVOID_return_converter(CReturnConverter):
         data.return_conversion.append(
             'return_value = HANDLE_TO_PYNUM(_return_value);\n')
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=ef52a757a1830d92]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=da0a4db751936ee7]*/
 
 #include "clinic/_winapi.c.h"
 
@@ -530,7 +529,7 @@ _winapi_CreateFile_impl(PyObject *module, LPCWSTR file_name,
 {
     HANDLE handle;
 
-    if (PySys_Audit("_winapi.CreateFile", "uIIII",
+    if (PySys_Audit("_winapi.CreateFile", "ukkkk",
                     file_name, desired_access, share_mode,
                     creation_disposition, flags_and_attributes) < 0) {
         return INVALID_HANDLE_VALUE;
@@ -777,7 +776,7 @@ _winapi_CreateMutexW_impl(PyObject *module,
 /*[clinic input]
 _winapi.CreateNamedPipe -> HANDLE
 
-    name: LPCTSTR
+    name: LPCWSTR
     open_mode: DWORD
     pipe_mode: DWORD
     max_instances: DWORD
@@ -789,25 +788,25 @@ _winapi.CreateNamedPipe -> HANDLE
 [clinic start generated code]*/
 
 static HANDLE
-_winapi_CreateNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD open_mode,
+_winapi_CreateNamedPipe_impl(PyObject *module, LPCWSTR name, DWORD open_mode,
                              DWORD pipe_mode, DWORD max_instances,
                              DWORD out_buffer_size, DWORD in_buffer_size,
                              DWORD default_timeout,
                              LPSECURITY_ATTRIBUTES security_attributes)
-/*[clinic end generated code: output=80f8c07346a94fbc input=5a73530b84d8bc37]*/
+/*[clinic end generated code: output=7d6fde93227680ba input=5bd4e4a55639ee02]*/
 {
     HANDLE handle;
 
-    if (PySys_Audit("_winapi.CreateNamedPipe", "uII",
+    if (PySys_Audit("_winapi.CreateNamedPipe", "ukk",
                     name, open_mode, pipe_mode) < 0) {
         return INVALID_HANDLE_VALUE;
     }
 
     Py_BEGIN_ALLOW_THREADS
-    handle = CreateNamedPipe(name, open_mode, pipe_mode,
-                             max_instances, out_buffer_size,
-                             in_buffer_size, default_timeout,
-                             security_attributes);
+    handle = CreateNamedPipeW(name, open_mode, pipe_mode,
+                              max_instances, out_buffer_size,
+                              in_buffer_size, default_timeout,
+                              security_attributes);
     Py_END_ALLOW_THREADS
 
     if (handle == INVALID_HANDLE_VALUE)
@@ -1049,7 +1048,7 @@ getenvironment(PyObject* environment)
     }
 
     normalized_environment = normalize_environment(environment);
-    if (normalize_environment == NULL) {
+    if (normalized_environment == NULL) {
         return NULL;
     }
 
@@ -1790,7 +1789,7 @@ _winapi_OpenEventW_impl(PyObject *module, DWORD desired_access,
 {
     HANDLE handle;
 
-    if (PySys_Audit("_winapi.OpenEventW", "Iu", desired_access, name) < 0) {
+    if (PySys_Audit("_winapi.OpenEventW", "ku", desired_access, name) < 0) {
         return INVALID_HANDLE_VALUE;
     }
 
@@ -1821,7 +1820,7 @@ _winapi_OpenMutexW_impl(PyObject *module, DWORD desired_access,
 {
     HANDLE handle;
 
-    if (PySys_Audit("_winapi.OpenMutexW", "Iu", desired_access, name) < 0) {
+    if (PySys_Audit("_winapi.OpenMutexW", "ku", desired_access, name) < 0) {
         return INVALID_HANDLE_VALUE;
     }
 
@@ -1882,7 +1881,7 @@ _winapi_OpenProcess_impl(PyObject *module, DWORD desired_access,
 {
     HANDLE handle;
 
-    if (PySys_Audit("_winapi.OpenProcess", "II",
+    if (PySys_Audit("_winapi.OpenProcess", "kk",
                     process_id, desired_access) < 0) {
         return INVALID_HANDLE_VALUE;
     }
@@ -2236,19 +2235,19 @@ _winapi_VirtualQuerySize_impl(PyObject *module, LPCVOID address)
 /*[clinic input]
 _winapi.WaitNamedPipe
 
-    name: LPCTSTR
+    name: LPCWSTR
     timeout: DWORD
     /
 [clinic start generated code]*/
 
 static PyObject *
-_winapi_WaitNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD timeout)
-/*[clinic end generated code: output=c2866f4439b1fe38 input=36fc781291b1862c]*/
+_winapi_WaitNamedPipe_impl(PyObject *module, LPCWSTR name, DWORD timeout)
+/*[clinic end generated code: output=e161e2e630b3e9c2 input=099a4746544488fa]*/
 {
     BOOL success;
 
     Py_BEGIN_ALLOW_THREADS
-    success = WaitNamedPipe(name, timeout);
+    success = WaitNamedPipeW(name, timeout);
     Py_END_ALLOW_THREADS
 
     if (!success)
@@ -2318,7 +2317,7 @@ _winapi_BatchedWaitForMultipleObjects_impl(PyObject *module,
                                            BOOL wait_all, DWORD milliseconds)
 /*[clinic end generated code: output=d21c1a4ad0a252fd input=7e196f29005dc77b]*/
 {
-    Py_ssize_t thread_count = 0, handle_count = 0, i, j;
+    Py_ssize_t thread_count = 0, handle_count = 0, i;
     Py_ssize_t nhandles;
     BatchedWaitData *thread_data[MAXIMUM_WAIT_OBJECTS];
     HANDLE handles[MAXIMUM_WAIT_OBJECTS];
@@ -2379,7 +2378,7 @@ _winapi_BatchedWaitForMultipleObjects_impl(PyObject *module,
         if (data->handle_count > MAXIMUM_WAIT_OBJECTS - 1) {
             data->handle_count = MAXIMUM_WAIT_OBJECTS - 1;
         }
-        for (j = 0; j < data->handle_count; ++i, ++j) {
+        for (DWORD j = 0; j < data->handle_count; ++i, ++j) {
             PyObject *v = PySequence_GetItem(handle_seq, i);
             if (!v || !PyArg_Parse(v, F_HANDLE, &data->handles[j])) {
                 Py_XDECREF(v);
@@ -2527,7 +2526,7 @@ _winapi_BatchedWaitForMultipleObjects_impl(PyObject *module,
         if (triggered_indices) {
             for (i = 0; i < thread_count; ++i) {
                 Py_ssize_t triggered = (Py_ssize_t)thread_data[i]->result - WAIT_OBJECT_0;
-                if (triggered >= 0 && triggered < thread_data[i]->handle_count - 1) {
+                if (triggered >= 0 && (size_t)triggered < thread_data[i]->handle_count - 1) {
                     PyObject *v = PyLong_FromSsize_t(thread_data[i]->handle_base + triggered);
                     if (!v || PyList_Append(triggered_indices, v) < 0) {
                         Py_XDECREF(v);
@@ -2804,7 +2803,7 @@ _winapi__mimetypes_read_windows_registry_impl(PyObject *module,
         }
 
         err = RegOpenKeyExW(hkcr, ext, 0, KEY_READ, &subkey);
-        if (err == ERROR_FILE_NOT_FOUND) {
+        if (err == ERROR_FILE_NOT_FOUND || err == ERROR_ACCESS_DENIED) {
             err = ERROR_SUCCESS;
             continue;
         } else if (err != ERROR_SUCCESS) {
@@ -2917,7 +2916,7 @@ _winapi_CopyFile2_impl(PyObject *module, LPCWSTR existing_file_name,
     HRESULT hr;
     COPYFILE2_EXTENDED_PARAMETERS params = { sizeof(COPYFILE2_EXTENDED_PARAMETERS) };
 
-    if (PySys_Audit("_winapi.CopyFile2", "uuI",
+    if (PySys_Audit("_winapi.CopyFile2", "uuk",
                     existing_file_name, new_file_name, flags) < 0) {
         return NULL;
     }
diff --git a/Modules/_xxtestfuzz/README.rst b/Modules/_xxtestfuzz/README.rst
index b951858458c82f..68d5d589d2a551 100644
--- a/Modules/_xxtestfuzz/README.rst
+++ b/Modules/_xxtestfuzz/README.rst
@@ -23,7 +23,7 @@ Add the test name on a new line in ``fuzz_tests.txt``.
 
 In ``fuzzer.c``, add a function to be run::
 
-    int $test_name (const char* data, size_t size) {
+    static int $fuzz_test_name(const char* data, size_t size) {
         ...
         return 0;
     }
@@ -31,10 +31,12 @@ In ``fuzzer.c``, add a function to be run::
 
 And invoke it from ``LLVMFuzzerTestOneInput``::
 
-    #if _Py_FUZZ_YES(fuzz_builtin_float)
-        rv |= _run_fuzz(data, size, fuzz_builtin_float);
+    #if !defined(_Py_FUZZ_ONE) || defined(_Py_FUZZ_$fuzz_test_name)
+        rv |= _run_fuzz(data, size, $fuzz_test_name);
     #endif
 
+Don't forget to replace ``$fuzz_test_name`` with your actual test name.
+
 ``LLVMFuzzerTestOneInput`` will run in oss-fuzz, with each test in
 ``fuzz_tests.txt`` run separately.
 
diff --git a/Modules/_zoneinfo.c b/Modules/_zoneinfo.c
index 38c3f0c45d803f..c5292575c22f23 100644
--- a/Modules/_zoneinfo.c
+++ b/Modules/_zoneinfo.c
@@ -3,6 +3,7 @@
 #endif
 
 #include "Python.h"
+#include "pycore_critical_section.h"  // _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED()
 #include "pycore_long.h"          // _PyLong_GetOne()
 #include "pycore_pyerrors.h"      // _PyErr_ChainExceptions1()
 
@@ -298,15 +299,20 @@ get_weak_cache(zoneinfo_state *state, PyTypeObject *type)
     }
 }
 
+/*[clinic input]
+@critical_section
+@classmethod
+zoneinfo.ZoneInfo.__new__
+
+    key: object
+
+Create a new ZoneInfo instance.
+[clinic start generated code]*/
+
 static PyObject *
-zoneinfo_new(PyTypeObject *type, PyObject *args, PyObject *kw)
+zoneinfo_ZoneInfo_impl(PyTypeObject *type, PyObject *key)
+/*[clinic end generated code: output=95e61dab86bb95c3 input=ef73d7a83bf8790e]*/
 {
-    PyObject *key = NULL;
-    static char *kwlist[] = {"key", NULL};
-    if (PyArg_ParseTupleAndKeywords(args, kw, "O", kwlist, &key) == 0) {
-        return NULL;
-    }
-
     zoneinfo_state *state = zoneinfo_get_state_by_self(type);
     PyObject *instance = zone_from_strong_cache(state, type, key);
     if (instance != NULL || PyErr_Occurred()) {
@@ -467,6 +473,7 @@ zoneinfo_ZoneInfo_no_cache_impl(PyTypeObject *type, PyTypeObject *cls,
 }
 
 /*[clinic input]
+@critical_section
 @classmethod
 zoneinfo.ZoneInfo.clear_cache
 
@@ -481,7 +488,7 @@ Clear the ZoneInfo cache.
 static PyObject *
 zoneinfo_ZoneInfo_clear_cache_impl(PyTypeObject *type, PyTypeObject *cls,
                                    PyObject *only_keys)
-/*[clinic end generated code: output=114d9b7c8a22e660 input=e32ca3bb396788ba]*/
+/*[clinic end generated code: output=114d9b7c8a22e660 input=35944715df26d24e]*/
 {
     zoneinfo_state *state = zoneinfo_get_state_by_cls(cls);
     PyObject *weak_cache = get_weak_cache(state, type);
@@ -816,14 +823,10 @@ zoneinfo_ZoneInfo__unpickle_impl(PyTypeObject *type, PyTypeObject *cls,
 /*[clinic end generated code: output=556712fc709deecb input=6ac8c73eed3de316]*/
 {
     if (from_cache) {
-        PyObject *val_args = PyTuple_Pack(1, key);
-        if (val_args == NULL) {
-            return NULL;
-        }
-
-        PyObject *rv = zoneinfo_new(type, val_args, NULL);
-
-        Py_DECREF(val_args);
+        PyObject *rv;
+        Py_BEGIN_CRITICAL_SECTION(type);
+        rv = zoneinfo_ZoneInfo_impl(type, key);
+        Py_END_CRITICAL_SECTION();
         return rv;
     }
     else {
@@ -858,8 +861,7 @@ load_timedelta(zoneinfo_state *state, long seconds)
             0, seconds, 0, 1, PyDateTimeAPI->DeltaType);
 
         if (tmp != NULL) {
-            rv = PyDict_SetDefault(state->TIMEDELTA_CACHE, pyoffset, tmp);
-            Py_XINCREF(rv);
+            PyDict_SetDefaultRef(state->TIMEDELTA_CACHE, pyoffset, tmp, &rv);
             Py_DECREF(tmp);
         }
     }
@@ -944,6 +946,7 @@ ttinfo_eq(const _ttinfo *const tti0, const _ttinfo *const tti1)
 static int
 load_data(zoneinfo_state *state, PyZoneInfo_ZoneInfo *self, PyObject *file_obj)
 {
+    int rv = 0;
     PyObject *data_tuple = NULL;
 
     long *utcoff = NULL;
@@ -1220,7 +1223,6 @@ load_data(zoneinfo_state *state, PyZoneInfo_ZoneInfo *self, PyObject *file_obj)
         }
     }
 
-    int rv = 0;
     goto cleanup;
 error:
     // These resources only need to be freed if we have failed, if we succeed
@@ -2368,6 +2370,7 @@ strong_cache_free(StrongCacheNode *root)
 static void
 remove_from_strong_cache(zoneinfo_state *state, StrongCacheNode *node)
 {
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(state->ZoneInfoType);
     if (state->ZONEINFO_STRONG_CACHE == node) {
         state->ZONEINFO_STRONG_CACHE = node->next;
     }
@@ -2422,6 +2425,7 @@ eject_from_strong_cache(zoneinfo_state *state, const PyTypeObject *const type,
         return 0;
     }
 
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(state->ZoneInfoType);
     StrongCacheNode *cache = state->ZONEINFO_STRONG_CACHE;
     StrongCacheNode *node = find_in_strong_cache(cache, key);
     if (node != NULL) {
@@ -2478,6 +2482,7 @@ zone_from_strong_cache(zoneinfo_state *state, const PyTypeObject *const type,
         return NULL;  // Strong cache currently only implemented for base class
     }
 
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(state->ZoneInfoType);
     StrongCacheNode *cache = state->ZONEINFO_STRONG_CACHE;
     StrongCacheNode *node = find_in_strong_cache(cache, key);
 
@@ -2504,6 +2509,7 @@ update_strong_cache(zoneinfo_state *state, const PyTypeObject *const type,
         return;
     }
 
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(state->ZoneInfoType);
     StrongCacheNode *new_node = strong_cache_node_new(key, zone);
     if (new_node == NULL) {
         return;
@@ -2631,7 +2637,7 @@ static PyType_Slot zoneinfo_slots[] = {
     {Py_tp_getattro, PyObject_GenericGetAttr},
     {Py_tp_methods, zoneinfo_methods},
     {Py_tp_members, zoneinfo_members},
-    {Py_tp_new, zoneinfo_new},
+    {Py_tp_new, zoneinfo_ZoneInfo},
     {Py_tp_dealloc, zoneinfo_dealloc},
     {Py_tp_traverse, zoneinfo_traverse},
     {Py_tp_clear, zoneinfo_clear},
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index a3b833d47cd9ea..600302e1183f99 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -2847,7 +2847,7 @@ array_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 
 PyDoc_STRVAR(module_doc,
 "This module defines an object type which can efficiently represent\n\
-an array of basic values: characters, integers, floating point\n\
+an array of basic values: characters, integers, floating-point\n\
 numbers.  Arrays are sequence types and behave very much like lists,\n\
 except that the type of objects stored in them is constrained.\n");
 
@@ -2875,8 +2875,8 @@ The following type codes are defined:\n\
     'L'         unsigned integer   4\n\
     'q'         signed integer     8 (see note)\n\
     'Q'         unsigned integer   8 (see note)\n\
-    'f'         floating point     4\n\
-    'd'         floating point     8\n\
+    'f'         floating-point     4\n\
+    'd'         floating-point     8\n\
 \n\
 NOTE: The 'u' typecode corresponds to Python's unicode character. On\n\
 narrow builds this is 2-bytes on wide builds this is 4-bytes.\n\
@@ -3074,11 +3074,16 @@ array_arrayiterator___setstate__(arrayiterobject *self, PyObject *state)
     Py_ssize_t index = PyLong_AsSsize_t(state);
     if (index == -1 && PyErr_Occurred())
         return NULL;
-    if (index < 0)
-        index = 0;
-    else if (index > Py_SIZE(self->ao))
-        index = Py_SIZE(self->ao); /* iterator exhausted */
-    self->index = index;
+    arrayobject *ao = self->ao;
+    if (ao != NULL) {
+        if (index < 0) {
+            index = 0;
+        }
+        else if (index > Py_SIZE(ao)) {
+            index = Py_SIZE(ao); /* iterator exhausted */
+        }
+        self->index = index;
+    }
     Py_RETURN_NONE;
 }
 
diff --git a/Modules/atexitmodule.c b/Modules/atexitmodule.c
index 297a8d74ba3bf4..c009235b7a36c2 100644
--- a/Modules/atexitmodule.c
+++ b/Modules/atexitmodule.c
@@ -27,7 +27,10 @@ int
 PyUnstable_AtExit(PyInterpreterState *interp,
                   atexit_datacallbackfunc func, void *data)
 {
-    assert(interp == _PyInterpreterState_GET());
+    PyThreadState *tstate = _PyThreadState_GET();
+    _Py_EnsureTstateNotNULL(tstate);
+    assert(tstate->interp == interp);
+
     atexit_callback *callback = PyMem_Malloc(sizeof(atexit_callback));
     if (callback == NULL) {
         PyErr_NoMemory();
@@ -38,12 +41,13 @@ PyUnstable_AtExit(PyInterpreterState *interp,
     callback->next = NULL;
 
     struct atexit_state *state = &interp->atexit;
-    if (state->ll_callbacks == NULL) {
+    atexit_callback *top = state->ll_callbacks;
+    if (top == NULL) {
         state->ll_callbacks = callback;
-        state->last_ll_callback = callback;
     }
     else {
-        state->last_ll_callback->next = callback;
+        callback->next = top;
+        state->ll_callbacks = callback;
     }
     return 0;
 }
diff --git a/Modules/clinic/_bisectmodule.c.h b/Modules/clinic/_bisectmodule.c.h
index 9955d0edb2699f..528602c84a9b23 100644
--- a/Modules/clinic/_bisectmodule.c.h
+++ b/Modules/clinic/_bisectmodule.c.h
@@ -44,7 +44,7 @@ _bisect_bisect_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(x), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('x'), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -152,7 +152,7 @@ _bisect_insort_right(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(x), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('x'), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -257,7 +257,7 @@ _bisect_bisect_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(x), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('x'), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -365,7 +365,7 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(x), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('x'), &_Py_ID(lo), &_Py_ID(hi), &_Py_ID(key), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -434,4 +434,4 @@ _bisect_insort_left(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4af5bd405149bf5f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=0a8d5a32dd0a3f04 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_curses_panel.c.h b/Modules/clinic/_curses_panel.c.h
index 457f71370afda9..c8788c461f745c 100644
--- a/Modules/clinic/_curses_panel.c.h
+++ b/Modules/clinic/_curses_panel.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_curses_panel_panel_bottom__doc__,
@@ -418,4 +421,4 @@ _curses_panel_update_panels(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return _curses_panel_update_panels_impl(module);
 }
-/*[clinic end generated code: output=7bac14e9a1194c87 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=18dc5571174c7189 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_cursesmodule.c.h b/Modules/clinic/_cursesmodule.c.h
index f7e0aaf7b23649..0b52308f10243e 100644
--- a/Modules/clinic/_cursesmodule.c.h
+++ b/Modules/clinic/_cursesmodule.c.h
@@ -3693,25 +3693,55 @@ PyDoc_STRVAR(_curses_resizeterm__doc__,
     {"resizeterm", _PyCFunction_CAST(_curses_resizeterm), METH_FASTCALL, _curses_resizeterm__doc__},
 
 static PyObject *
-_curses_resizeterm_impl(PyObject *module, int nlines, int ncols);
+_curses_resizeterm_impl(PyObject *module, short nlines, short ncols);
 
 static PyObject *
 _curses_resizeterm(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    int nlines;
-    int ncols;
+    short nlines;
+    short ncols;
 
     if (!_PyArg_CheckPositional("resizeterm", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = PyLong_AsInt(args[0]);
-    if (nlines == -1 && PyErr_Occurred()) {
-        goto exit;
+    {
+        long ival = PyLong_AsLong(args[0]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < SHRT_MIN) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > SHRT_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            nlines = (short) ival;
+        }
     }
-    ncols = PyLong_AsInt(args[1]);
-    if (ncols == -1 && PyErr_Occurred()) {
-        goto exit;
+    {
+        long ival = PyLong_AsLong(args[1]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < SHRT_MIN) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > SHRT_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            ncols = (short) ival;
+        }
     }
     return_value = _curses_resizeterm_impl(module, nlines, ncols);
 
@@ -3744,25 +3774,55 @@ PyDoc_STRVAR(_curses_resize_term__doc__,
     {"resize_term", _PyCFunction_CAST(_curses_resize_term), METH_FASTCALL, _curses_resize_term__doc__},
 
 static PyObject *
-_curses_resize_term_impl(PyObject *module, int nlines, int ncols);
+_curses_resize_term_impl(PyObject *module, short nlines, short ncols);
 
 static PyObject *
 _curses_resize_term(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    int nlines;
-    int ncols;
+    short nlines;
+    short ncols;
 
     if (!_PyArg_CheckPositional("resize_term", nargs, 2, 2)) {
         goto exit;
     }
-    nlines = PyLong_AsInt(args[0]);
-    if (nlines == -1 && PyErr_Occurred()) {
-        goto exit;
+    {
+        long ival = PyLong_AsLong(args[0]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < SHRT_MIN) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > SHRT_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            nlines = (short) ival;
+        }
     }
-    ncols = PyLong_AsInt(args[1]);
-    if (ncols == -1 && PyErr_Occurred()) {
-        goto exit;
+    {
+        long ival = PyLong_AsLong(args[1]);
+        if (ival == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        else if (ival < SHRT_MIN) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is less than minimum");
+            goto exit;
+        }
+        else if (ival > SHRT_MAX) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "signed short integer is greater than maximum");
+            goto exit;
+        }
+        else {
+            ncols = (short) ival;
+        }
     }
     return_value = _curses_resize_term_impl(module, nlines, ncols);
 
@@ -4318,4 +4378,4 @@ _curses_has_extended_color_support(PyObject *module, PyObject *Py_UNUSED(ignored
 #ifndef _CURSES_USE_DEFAULT_COLORS_METHODDEF
     #define _CURSES_USE_DEFAULT_COLORS_METHODDEF
 #endif /* !defined(_CURSES_USE_DEFAULT_COLORS_METHODDEF) */
-/*[clinic end generated code: output=96887782374f070a input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8745c1562b537fb4 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_dbmmodule.c.h b/Modules/clinic/_dbmmodule.c.h
index d06271e18a49b2..4379b433db3738 100644
--- a/Modules/clinic/_dbmmodule.c.h
+++ b/Modules/clinic/_dbmmodule.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(_dbm_dbm_close__doc__,
@@ -218,4 +221,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=743ce0cea116747e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f7d9a87d80a64278 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index 10b2dd1c15f7fd..1a5a820d1f00b5 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -4,7 +4,7 @@ preserve
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 #  include "pycore_gc.h"          // PyGC_Head
-#  include "pycore_runtime.h"     // _Py_ID()
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
 #endif
 #include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
@@ -1236,4 +1236,4 @@ _elementtree_XMLParser__setevents(XMLParserObject *self, PyObject *const *args,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=aed9f53eeb0404e0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=bd28eba33d9c1f25 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_gdbmmodule.c.h b/Modules/clinic/_gdbmmodule.c.h
index 626e4678809d4f..bbf4365114c0aa 100644
--- a/Modules/clinic/_gdbmmodule.c.h
+++ b/Modules/clinic/_gdbmmodule.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_gdbm_gdbm_get__doc__,
@@ -340,4 +343,4 @@ dbmopen(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=6b4c19905ac9967d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=07bdeb4a8ecb328e input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_hashopenssl.c.h b/Modules/clinic/_hashopenssl.c.h
index 58650dff288444..1d85ab1c524082 100644
--- a/Modules/clinic/_hashopenssl.c.h
+++ b/Modules/clinic/_hashopenssl.c.h
@@ -1347,7 +1347,7 @@ _hashlib_scrypt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(password), &_Py_ID(salt), &_Py_ID(n), &_Py_ID(r), &_Py_ID(p), &_Py_ID(maxmem), &_Py_ID(dklen), },
+        .ob_item = { &_Py_ID(password), &_Py_ID(salt), _Py_LATIN1_CHR('n'), _Py_LATIN1_CHR('r'), _Py_LATIN1_CHR('p'), &_Py_ID(maxmem), &_Py_ID(dklen), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1824,4 +1824,4 @@ _hashlib_compare_digest(PyObject *module, PyObject *const *args, Py_ssize_t narg
 #ifndef _HASHLIB_SCRYPT_METHODDEF
     #define _HASHLIB_SCRYPT_METHODDEF
 #endif /* !defined(_HASHLIB_SCRYPT_METHODDEF) */
-/*[clinic end generated code: output=b7eddeb3d6ccdeec input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fef43fd9f4dbea49 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index 5a6ae7be6b6ea7..693c7d59e9d7a6 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -4,7 +4,7 @@ preserve
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 #  include "pycore_gc.h"          // PyGC_Head
-#  include "pycore_runtime.h"     // _Py_ID()
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
 #endif
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
@@ -1077,4 +1077,4 @@ _pickle_loads(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=bd63c85a8737b0aa input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c7dd60d20ee4895f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_ssl.c.h b/Modules/clinic/_ssl.c.h
index e8d1342ed35e66..7c1ea6ad1798eb 100644
--- a/Modules/clinic/_ssl.c.h
+++ b/Modules/clinic/_ssl.c.h
@@ -6,6 +6,7 @@ preserve
 #  include "pycore_gc.h"          // PyGC_Head
 #  include "pycore_runtime.h"     // _Py_ID()
 #endif
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
 #include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
 PyDoc_STRVAR(_ssl__SSLSocket_do_handshake__doc__,
@@ -22,7 +23,13 @@ _ssl__SSLSocket_do_handshake_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_do_handshake(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_do_handshake_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_do_handshake_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__test_decode_cert__doc__,
@@ -88,7 +95,9 @@ _ssl__SSLSocket_getpeercert(PySSLSocket *self, PyObject *const *args, Py_ssize_t
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLSocket_getpeercert_impl(self, binary_mode);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -108,7 +117,13 @@ _ssl__SSLSocket_get_verified_chain_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_get_verified_chain(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_get_verified_chain_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_get_verified_chain_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_get_unverified_chain__doc__,
@@ -125,7 +140,13 @@ _ssl__SSLSocket_get_unverified_chain_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_get_unverified_chain(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_get_unverified_chain_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_get_unverified_chain_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_shared_ciphers__doc__,
@@ -142,7 +163,13 @@ _ssl__SSLSocket_shared_ciphers_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_shared_ciphers(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_shared_ciphers_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_shared_ciphers_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_cipher__doc__,
@@ -159,7 +186,13 @@ _ssl__SSLSocket_cipher_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_cipher(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_cipher_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_cipher_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_version__doc__,
@@ -176,7 +209,13 @@ _ssl__SSLSocket_version_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_version(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_version_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_version_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_selected_alpn_protocol__doc__,
@@ -193,7 +232,13 @@ _ssl__SSLSocket_selected_alpn_protocol_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_selected_alpn_protocol(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_selected_alpn_protocol_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_selected_alpn_protocol_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_compression__doc__,
@@ -213,6 +258,190 @@ _ssl__SSLSocket_compression(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
     return _ssl__SSLSocket_compression_impl(self);
 }
 
+PyDoc_STRVAR(_ssl__SSLSocket_context__doc__,
+"This changes the context associated with the SSLSocket.\n"
+"\n"
+"This is typically used from within a callback function set by the sni_callback\n"
+"on the SSLContext to change the certificate information associated with the\n"
+"SSLSocket before the cryptographic exchange handshake messages.");
+#if defined(_ssl__SSLSocket_context_DOCSTR)
+#   undef _ssl__SSLSocket_context_DOCSTR
+#endif
+#define _ssl__SSLSocket_context_DOCSTR _ssl__SSLSocket_context__doc__
+
+#if !defined(_ssl__SSLSocket_context_DOCSTR)
+#  define _ssl__SSLSocket_context_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_CONTEXT_GETSETDEF)
+#  undef _SSL__SSLSOCKET_CONTEXT_GETSETDEF
+#  define _SSL__SSLSOCKET_CONTEXT_GETSETDEF {"context", (getter)_ssl__SSLSocket_context_get, (setter)_ssl__SSLSocket_context_set, _ssl__SSLSocket_context_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_CONTEXT_GETSETDEF {"context", (getter)_ssl__SSLSocket_context_get, NULL, _ssl__SSLSocket_context_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_context_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_context_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_context_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLSocket_context_DOCSTR)
+#  define _ssl__SSLSocket_context_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_CONTEXT_GETSETDEF)
+#  undef _SSL__SSLSOCKET_CONTEXT_GETSETDEF
+#  define _SSL__SSLSOCKET_CONTEXT_GETSETDEF {"context", (getter)_ssl__SSLSocket_context_get, (setter)_ssl__SSLSocket_context_set, _ssl__SSLSocket_context_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_CONTEXT_GETSETDEF {"context", NULL, (setter)_ssl__SSLSocket_context_set, NULL},
+#endif
+
+static int
+_ssl__SSLSocket_context_set_impl(PySSLSocket *self, PyObject *value);
+
+static int
+_ssl__SSLSocket_context_set(PySSLSocket *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_context_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLSocket_server_side__doc__,
+"Whether this is a server-side socket.");
+#if defined(_ssl__SSLSocket_server_side_DOCSTR)
+#   undef _ssl__SSLSocket_server_side_DOCSTR
+#endif
+#define _ssl__SSLSocket_server_side_DOCSTR _ssl__SSLSocket_server_side__doc__
+
+#if !defined(_ssl__SSLSocket_server_side_DOCSTR)
+#  define _ssl__SSLSocket_server_side_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_SERVER_SIDE_GETSETDEF)
+#  undef _SSL__SSLSOCKET_SERVER_SIDE_GETSETDEF
+#  define _SSL__SSLSOCKET_SERVER_SIDE_GETSETDEF {"server_side", (getter)_ssl__SSLSocket_server_side_get, (setter)_ssl__SSLSocket_server_side_set, _ssl__SSLSocket_server_side_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_SERVER_SIDE_GETSETDEF {"server_side", (getter)_ssl__SSLSocket_server_side_get, NULL, _ssl__SSLSocket_server_side_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_server_side_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_server_side_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_server_side_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLSocket_server_hostname__doc__,
+"The currently set server hostname (for SNI).");
+#if defined(_ssl__SSLSocket_server_hostname_DOCSTR)
+#   undef _ssl__SSLSocket_server_hostname_DOCSTR
+#endif
+#define _ssl__SSLSocket_server_hostname_DOCSTR _ssl__SSLSocket_server_hostname__doc__
+
+#if !defined(_ssl__SSLSocket_server_hostname_DOCSTR)
+#  define _ssl__SSLSocket_server_hostname_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_SERVER_HOSTNAME_GETSETDEF)
+#  undef _SSL__SSLSOCKET_SERVER_HOSTNAME_GETSETDEF
+#  define _SSL__SSLSOCKET_SERVER_HOSTNAME_GETSETDEF {"server_hostname", (getter)_ssl__SSLSocket_server_hostname_get, (setter)_ssl__SSLSocket_server_hostname_set, _ssl__SSLSocket_server_hostname_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_SERVER_HOSTNAME_GETSETDEF {"server_hostname", (getter)_ssl__SSLSocket_server_hostname_get, NULL, _ssl__SSLSocket_server_hostname_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_server_hostname_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_server_hostname_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_server_hostname_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLSocket_owner__doc__,
+"The Python-level owner of this object.\n"
+"\n"
+"Passed as \"self\" in servername callback.");
+#if defined(_ssl__SSLSocket_owner_DOCSTR)
+#   undef _ssl__SSLSocket_owner_DOCSTR
+#endif
+#define _ssl__SSLSocket_owner_DOCSTR _ssl__SSLSocket_owner__doc__
+
+#if !defined(_ssl__SSLSocket_owner_DOCSTR)
+#  define _ssl__SSLSocket_owner_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_OWNER_GETSETDEF)
+#  undef _SSL__SSLSOCKET_OWNER_GETSETDEF
+#  define _SSL__SSLSOCKET_OWNER_GETSETDEF {"owner", (getter)_ssl__SSLSocket_owner_get, (setter)_ssl__SSLSocket_owner_set, _ssl__SSLSocket_owner_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_OWNER_GETSETDEF {"owner", (getter)_ssl__SSLSocket_owner_get, NULL, _ssl__SSLSocket_owner_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_owner_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_owner_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_owner_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLSocket_owner_DOCSTR)
+#  define _ssl__SSLSocket_owner_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_OWNER_GETSETDEF)
+#  undef _SSL__SSLSOCKET_OWNER_GETSETDEF
+#  define _SSL__SSLSOCKET_OWNER_GETSETDEF {"owner", (getter)_ssl__SSLSocket_owner_get, (setter)_ssl__SSLSocket_owner_set, _ssl__SSLSocket_owner_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_OWNER_GETSETDEF {"owner", NULL, (setter)_ssl__SSLSocket_owner_set, NULL},
+#endif
+
+static int
+_ssl__SSLSocket_owner_set_impl(PySSLSocket *self, PyObject *value);
+
+static int
+_ssl__SSLSocket_owner_set(PySSLSocket *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_owner_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_ssl__SSLSocket_write__doc__,
 "write($self, b, /)\n"
 "--\n"
@@ -236,7 +465,9 @@ _ssl__SSLSocket_write(PySSLSocket *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLSocket_write_impl(self, &b);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for b */
@@ -262,7 +493,13 @@ _ssl__SSLSocket_pending_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_pending(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_pending_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_pending_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_read__doc__,
@@ -300,7 +537,9 @@ _ssl__SSLSocket_read(PySSLSocket *self, PyObject *args)
             PyErr_SetString(PyExc_TypeError, "_ssl._SSLSocket.read requires 1 to 2 arguments");
             goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLSocket_read_impl(self, len, group_right_1, &buffer);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for buffer */
@@ -326,7 +565,13 @@ _ssl__SSLSocket_shutdown_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_shutdown(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_shutdown_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_shutdown_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLSocket_get_channel_binding__doc__,
@@ -400,7 +645,9 @@ _ssl__SSLSocket_get_channel_binding(PySSLSocket *self, PyObject *const *args, Py
         goto exit;
     }
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLSocket_get_channel_binding_impl(self, cb_type);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -421,7 +668,102 @@ _ssl__SSLSocket_verify_client_post_handshake_impl(PySSLSocket *self);
 static PyObject *
 _ssl__SSLSocket_verify_client_post_handshake(PySSLSocket *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLSocket_verify_client_post_handshake_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_verify_client_post_handshake_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLSocket_session__doc__,
+"The underlying SSLSession object.");
+#if defined(_ssl__SSLSocket_session_DOCSTR)
+#   undef _ssl__SSLSocket_session_DOCSTR
+#endif
+#define _ssl__SSLSocket_session_DOCSTR _ssl__SSLSocket_session__doc__
+
+#if !defined(_ssl__SSLSocket_session_DOCSTR)
+#  define _ssl__SSLSocket_session_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_SESSION_GETSETDEF)
+#  undef _SSL__SSLSOCKET_SESSION_GETSETDEF
+#  define _SSL__SSLSOCKET_SESSION_GETSETDEF {"session", (getter)_ssl__SSLSocket_session_get, (setter)_ssl__SSLSocket_session_set, _ssl__SSLSocket_session_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_SESSION_GETSETDEF {"session", (getter)_ssl__SSLSocket_session_get, NULL, _ssl__SSLSocket_session_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_session_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_session_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_session_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLSocket_session_DOCSTR)
+#  define _ssl__SSLSocket_session_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_SESSION_GETSETDEF)
+#  undef _SSL__SSLSOCKET_SESSION_GETSETDEF
+#  define _SSL__SSLSOCKET_SESSION_GETSETDEF {"session", (getter)_ssl__SSLSocket_session_get, (setter)_ssl__SSLSocket_session_set, _ssl__SSLSocket_session_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_SESSION_GETSETDEF {"session", NULL, (setter)_ssl__SSLSocket_session_set, NULL},
+#endif
+
+static int
+_ssl__SSLSocket_session_set_impl(PySSLSocket *self, PyObject *value);
+
+static int
+_ssl__SSLSocket_session_set(PySSLSocket *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_session_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLSocket_session_reused__doc__,
+"Was the client session reused during handshake?");
+#if defined(_ssl__SSLSocket_session_reused_DOCSTR)
+#   undef _ssl__SSLSocket_session_reused_DOCSTR
+#endif
+#define _ssl__SSLSocket_session_reused_DOCSTR _ssl__SSLSocket_session_reused__doc__
+
+#if !defined(_ssl__SSLSocket_session_reused_DOCSTR)
+#  define _ssl__SSLSocket_session_reused_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLSOCKET_SESSION_REUSED_GETSETDEF)
+#  undef _SSL__SSLSOCKET_SESSION_REUSED_GETSETDEF
+#  define _SSL__SSLSOCKET_SESSION_REUSED_GETSETDEF {"session_reused", (getter)_ssl__SSLSocket_session_reused_get, (setter)_ssl__SSLSocket_session_reused_set, _ssl__SSLSocket_session_reused_DOCSTR},
+#else
+#  define _SSL__SSLSOCKET_SESSION_REUSED_GETSETDEF {"session_reused", (getter)_ssl__SSLSocket_session_reused_get, NULL, _ssl__SSLSocket_session_reused_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLSocket_session_reused_get_impl(PySSLSocket *self);
+
+static PyObject *
+_ssl__SSLSocket_session_reused_get(PySSLSocket *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLSocket_session_reused_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 static PyObject *
@@ -445,7 +787,9 @@ _ssl__SSLContext(PyTypeObject *type, PyObject *args, PyObject *kwargs)
     if (proto_version == -1 && PyErr_Occurred()) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(type);
     return_value = _ssl__SSLContext_impl(type, proto_version);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -456,82 +800,558 @@ PyDoc_STRVAR(_ssl__SSLContext_set_ciphers__doc__,
 "--\n"
 "\n");
 
-#define _SSL__SSLCONTEXT_SET_CIPHERS_METHODDEF    \
-    {"set_ciphers", (PyCFunction)_ssl__SSLContext_set_ciphers, METH_O, _ssl__SSLContext_set_ciphers__doc__},
+#define _SSL__SSLCONTEXT_SET_CIPHERS_METHODDEF    \
+    {"set_ciphers", (PyCFunction)_ssl__SSLContext_set_ciphers, METH_O, _ssl__SSLContext_set_ciphers__doc__},
+
+static PyObject *
+_ssl__SSLContext_set_ciphers_impl(PySSLContext *self, const char *cipherlist);
+
+static PyObject *
+_ssl__SSLContext_set_ciphers(PySSLContext *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    const char *cipherlist;
+
+    if (!PyUnicode_Check(arg)) {
+        _PyArg_BadArgument("set_ciphers", "argument", "str", arg);
+        goto exit;
+    }
+    Py_ssize_t cipherlist_length;
+    cipherlist = PyUnicode_AsUTF8AndSize(arg, &cipherlist_length);
+    if (cipherlist == NULL) {
+        goto exit;
+    }
+    if (strlen(cipherlist) != (size_t)cipherlist_length) {
+        PyErr_SetString(PyExc_ValueError, "embedded null character");
+        goto exit;
+    }
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_set_ciphers_impl(self, cipherlist);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext_get_ciphers__doc__,
+"get_ciphers($self, /)\n"
+"--\n"
+"\n");
+
+#define _SSL__SSLCONTEXT_GET_CIPHERS_METHODDEF    \
+    {"get_ciphers", (PyCFunction)_ssl__SSLContext_get_ciphers, METH_NOARGS, _ssl__SSLContext_get_ciphers__doc__},
+
+static PyObject *
+_ssl__SSLContext_get_ciphers_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_get_ciphers(PySSLContext *self, PyObject *Py_UNUSED(ignored))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_get_ciphers_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext__set_alpn_protocols__doc__,
+"_set_alpn_protocols($self, protos, /)\n"
+"--\n"
+"\n");
+
+#define _SSL__SSLCONTEXT__SET_ALPN_PROTOCOLS_METHODDEF    \
+    {"_set_alpn_protocols", (PyCFunction)_ssl__SSLContext__set_alpn_protocols, METH_O, _ssl__SSLContext__set_alpn_protocols__doc__},
+
+static PyObject *
+_ssl__SSLContext__set_alpn_protocols_impl(PySSLContext *self,
+                                          Py_buffer *protos);
+
+static PyObject *
+_ssl__SSLContext__set_alpn_protocols(PySSLContext *self, PyObject *arg)
+{
+    PyObject *return_value = NULL;
+    Py_buffer protos = {NULL, NULL};
+
+    if (PyObject_GetBuffer(arg, &protos, PyBUF_SIMPLE) != 0) {
+        goto exit;
+    }
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext__set_alpn_protocols_impl(self, &protos);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    /* Cleanup for protos */
+    if (protos.obj) {
+       PyBuffer_Release(&protos);
+    }
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_verify_mode_DOCSTR)
+#  define _ssl__SSLContext_verify_mode_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF
+#  define _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF {"verify_mode", (getter)_ssl__SSLContext_verify_mode_get, (setter)_ssl__SSLContext_verify_mode_set, _ssl__SSLContext_verify_mode_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF {"verify_mode", (getter)_ssl__SSLContext_verify_mode_get, NULL, _ssl__SSLContext_verify_mode_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_verify_mode_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_verify_mode_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_verify_mode_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_verify_mode_DOCSTR)
+#  define _ssl__SSLContext_verify_mode_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF
+#  define _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF {"verify_mode", (getter)_ssl__SSLContext_verify_mode_get, (setter)_ssl__SSLContext_verify_mode_set, _ssl__SSLContext_verify_mode_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_VERIFY_MODE_GETSETDEF {"verify_mode", NULL, (setter)_ssl__SSLContext_verify_mode_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_verify_mode_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_verify_mode_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_verify_mode_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_verify_flags_DOCSTR)
+#  define _ssl__SSLContext_verify_flags_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF
+#  define _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF {"verify_flags", (getter)_ssl__SSLContext_verify_flags_get, (setter)_ssl__SSLContext_verify_flags_set, _ssl__SSLContext_verify_flags_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF {"verify_flags", (getter)_ssl__SSLContext_verify_flags_get, NULL, _ssl__SSLContext_verify_flags_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_verify_flags_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_verify_flags_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_verify_flags_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_verify_flags_DOCSTR)
+#  define _ssl__SSLContext_verify_flags_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF
+#  define _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF {"verify_flags", (getter)_ssl__SSLContext_verify_flags_get, (setter)_ssl__SSLContext_verify_flags_set, _ssl__SSLContext_verify_flags_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_VERIFY_FLAGS_GETSETDEF {"verify_flags", NULL, (setter)_ssl__SSLContext_verify_flags_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_verify_flags_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_verify_flags_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_verify_flags_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_minimum_version_DOCSTR)
+#  define _ssl__SSLContext_minimum_version_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF
+#  define _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF {"minimum_version", (getter)_ssl__SSLContext_minimum_version_get, (setter)_ssl__SSLContext_minimum_version_set, _ssl__SSLContext_minimum_version_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF {"minimum_version", (getter)_ssl__SSLContext_minimum_version_get, NULL, _ssl__SSLContext_minimum_version_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_minimum_version_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_minimum_version_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_minimum_version_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_minimum_version_DOCSTR)
+#  define _ssl__SSLContext_minimum_version_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF
+#  define _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF {"minimum_version", (getter)_ssl__SSLContext_minimum_version_get, (setter)_ssl__SSLContext_minimum_version_set, _ssl__SSLContext_minimum_version_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_MINIMUM_VERSION_GETSETDEF {"minimum_version", NULL, (setter)_ssl__SSLContext_minimum_version_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_minimum_version_set_impl(PySSLContext *self,
+                                          PyObject *value);
+
+static int
+_ssl__SSLContext_minimum_version_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_minimum_version_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_maximum_version_DOCSTR)
+#  define _ssl__SSLContext_maximum_version_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF
+#  define _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF {"maximum_version", (getter)_ssl__SSLContext_maximum_version_get, (setter)_ssl__SSLContext_maximum_version_set, _ssl__SSLContext_maximum_version_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF {"maximum_version", (getter)_ssl__SSLContext_maximum_version_get, NULL, _ssl__SSLContext_maximum_version_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_maximum_version_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_maximum_version_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_maximum_version_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_maximum_version_DOCSTR)
+#  define _ssl__SSLContext_maximum_version_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF
+#  define _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF {"maximum_version", (getter)_ssl__SSLContext_maximum_version_get, (setter)_ssl__SSLContext_maximum_version_set, _ssl__SSLContext_maximum_version_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_MAXIMUM_VERSION_GETSETDEF {"maximum_version", NULL, (setter)_ssl__SSLContext_maximum_version_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_maximum_version_set_impl(PySSLContext *self,
+                                          PyObject *value);
+
+static int
+_ssl__SSLContext_maximum_version_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_maximum_version_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext_num_tickets__doc__,
+"Control the number of TLSv1.3 session tickets.");
+#if defined(_ssl__SSLContext_num_tickets_DOCSTR)
+#   undef _ssl__SSLContext_num_tickets_DOCSTR
+#endif
+#define _ssl__SSLContext_num_tickets_DOCSTR _ssl__SSLContext_num_tickets__doc__
+
+#if !defined(_ssl__SSLContext_num_tickets_DOCSTR)
+#  define _ssl__SSLContext_num_tickets_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF
+#  define _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF {"num_tickets", (getter)_ssl__SSLContext_num_tickets_get, (setter)_ssl__SSLContext_num_tickets_set, _ssl__SSLContext_num_tickets_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF {"num_tickets", (getter)_ssl__SSLContext_num_tickets_get, NULL, _ssl__SSLContext_num_tickets_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_num_tickets_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_num_tickets_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_num_tickets_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_num_tickets_DOCSTR)
+#  define _ssl__SSLContext_num_tickets_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF
+#  define _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF {"num_tickets", (getter)_ssl__SSLContext_num_tickets_get, (setter)_ssl__SSLContext_num_tickets_set, _ssl__SSLContext_num_tickets_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_NUM_TICKETS_GETSETDEF {"num_tickets", NULL, (setter)_ssl__SSLContext_num_tickets_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_num_tickets_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_num_tickets_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_num_tickets_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext_security_level__doc__,
+"The current security level.");
+#if defined(_ssl__SSLContext_security_level_DOCSTR)
+#   undef _ssl__SSLContext_security_level_DOCSTR
+#endif
+#define _ssl__SSLContext_security_level_DOCSTR _ssl__SSLContext_security_level__doc__
+
+#if !defined(_ssl__SSLContext_security_level_DOCSTR)
+#  define _ssl__SSLContext_security_level_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_SECURITY_LEVEL_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_SECURITY_LEVEL_GETSETDEF
+#  define _SSL__SSLCONTEXT_SECURITY_LEVEL_GETSETDEF {"security_level", (getter)_ssl__SSLContext_security_level_get, (setter)_ssl__SSLContext_security_level_set, _ssl__SSLContext_security_level_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_SECURITY_LEVEL_GETSETDEF {"security_level", (getter)_ssl__SSLContext_security_level_get, NULL, _ssl__SSLContext_security_level_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_security_level_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_security_level_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_security_level_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_options_DOCSTR)
+#  define _ssl__SSLContext_options_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_OPTIONS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_OPTIONS_GETSETDEF
+#  define _SSL__SSLCONTEXT_OPTIONS_GETSETDEF {"options", (getter)_ssl__SSLContext_options_get, (setter)_ssl__SSLContext_options_set, _ssl__SSLContext_options_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_OPTIONS_GETSETDEF {"options", (getter)_ssl__SSLContext_options_get, NULL, _ssl__SSLContext_options_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_options_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_options_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_options_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_options_DOCSTR)
+#  define _ssl__SSLContext_options_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_OPTIONS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_OPTIONS_GETSETDEF
+#  define _SSL__SSLCONTEXT_OPTIONS_GETSETDEF {"options", (getter)_ssl__SSLContext_options_get, (setter)_ssl__SSLContext_options_set, _ssl__SSLContext_options_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_OPTIONS_GETSETDEF {"options", NULL, (setter)_ssl__SSLContext_options_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_options_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_options_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_options_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext__host_flags_DOCSTR)
+#  define _ssl__SSLContext__host_flags_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF
+#  define _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF {"_host_flags", (getter)_ssl__SSLContext__host_flags_get, (setter)_ssl__SSLContext__host_flags_set, _ssl__SSLContext__host_flags_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF {"_host_flags", (getter)_ssl__SSLContext__host_flags_get, NULL, _ssl__SSLContext__host_flags_DOCSTR},
+#endif
 
 static PyObject *
-_ssl__SSLContext_set_ciphers_impl(PySSLContext *self, const char *cipherlist);
+_ssl__SSLContext__host_flags_get_impl(PySSLContext *self);
 
 static PyObject *
-_ssl__SSLContext_set_ciphers(PySSLContext *self, PyObject *arg)
+_ssl__SSLContext__host_flags_get(PySSLContext *self, void *Py_UNUSED(context))
 {
     PyObject *return_value = NULL;
-    const char *cipherlist;
 
-    if (!PyUnicode_Check(arg)) {
-        _PyArg_BadArgument("set_ciphers", "argument", "str", arg);
-        goto exit;
-    }
-    Py_ssize_t cipherlist_length;
-    cipherlist = PyUnicode_AsUTF8AndSize(arg, &cipherlist_length);
-    if (cipherlist == NULL) {
-        goto exit;
-    }
-    if (strlen(cipherlist) != (size_t)cipherlist_length) {
-        PyErr_SetString(PyExc_ValueError, "embedded null character");
-        goto exit;
-    }
-    return_value = _ssl__SSLContext_set_ciphers_impl(self, cipherlist);
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext__host_flags_get_impl(self);
+    Py_END_CRITICAL_SECTION();
 
-exit:
     return return_value;
 }
 
-PyDoc_STRVAR(_ssl__SSLContext_get_ciphers__doc__,
-"get_ciphers($self, /)\n"
-"--\n"
-"\n");
+#if !defined(_ssl__SSLContext__host_flags_DOCSTR)
+#  define _ssl__SSLContext__host_flags_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF)
+#  undef _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF
+#  define _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF {"_host_flags", (getter)_ssl__SSLContext__host_flags_get, (setter)_ssl__SSLContext__host_flags_set, _ssl__SSLContext__host_flags_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT__HOST_FLAGS_GETSETDEF {"_host_flags", NULL, (setter)_ssl__SSLContext__host_flags_set, NULL},
+#endif
 
-#define _SSL__SSLCONTEXT_GET_CIPHERS_METHODDEF    \
-    {"get_ciphers", (PyCFunction)_ssl__SSLContext_get_ciphers, METH_NOARGS, _ssl__SSLContext_get_ciphers__doc__},
+static int
+_ssl__SSLContext__host_flags_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext__host_flags_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext__host_flags_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_check_hostname_DOCSTR)
+#  define _ssl__SSLContext_check_hostname_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF
+#  define _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF {"check_hostname", (getter)_ssl__SSLContext_check_hostname_get, (setter)_ssl__SSLContext_check_hostname_set, _ssl__SSLContext_check_hostname_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF {"check_hostname", (getter)_ssl__SSLContext_check_hostname_get, NULL, _ssl__SSLContext_check_hostname_DOCSTR},
+#endif
 
 static PyObject *
-_ssl__SSLContext_get_ciphers_impl(PySSLContext *self);
+_ssl__SSLContext_check_hostname_get_impl(PySSLContext *self);
 
 static PyObject *
-_ssl__SSLContext_get_ciphers(PySSLContext *self, PyObject *Py_UNUSED(ignored))
+_ssl__SSLContext_check_hostname_get(PySSLContext *self, void *Py_UNUSED(context))
 {
-    return _ssl__SSLContext_get_ciphers_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_check_hostname_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
-PyDoc_STRVAR(_ssl__SSLContext__set_alpn_protocols__doc__,
-"_set_alpn_protocols($self, protos, /)\n"
-"--\n"
-"\n");
+#if !defined(_ssl__SSLContext_check_hostname_DOCSTR)
+#  define _ssl__SSLContext_check_hostname_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF
+#  define _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF {"check_hostname", (getter)_ssl__SSLContext_check_hostname_get, (setter)_ssl__SSLContext_check_hostname_set, _ssl__SSLContext_check_hostname_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_CHECK_HOSTNAME_GETSETDEF {"check_hostname", NULL, (setter)_ssl__SSLContext_check_hostname_set, NULL},
+#endif
 
-#define _SSL__SSLCONTEXT__SET_ALPN_PROTOCOLS_METHODDEF    \
-    {"_set_alpn_protocols", (PyCFunction)_ssl__SSLContext__set_alpn_protocols, METH_O, _ssl__SSLContext__set_alpn_protocols__doc__},
+static int
+_ssl__SSLContext_check_hostname_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_check_hostname_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_check_hostname_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_protocol_DOCSTR)
+#  define _ssl__SSLContext_protocol_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_PROTOCOL_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_PROTOCOL_GETSETDEF
+#  define _SSL__SSLCONTEXT_PROTOCOL_GETSETDEF {"protocol", (getter)_ssl__SSLContext_protocol_get, (setter)_ssl__SSLContext_protocol_set, _ssl__SSLContext_protocol_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_PROTOCOL_GETSETDEF {"protocol", (getter)_ssl__SSLContext_protocol_get, NULL, _ssl__SSLContext_protocol_DOCSTR},
+#endif
 
 static PyObject *
-_ssl__SSLContext__set_alpn_protocols_impl(PySSLContext *self,
-                                          Py_buffer *protos);
+_ssl__SSLContext_protocol_get_impl(PySSLContext *self);
 
 static PyObject *
-_ssl__SSLContext__set_alpn_protocols(PySSLContext *self, PyObject *arg)
+_ssl__SSLContext_protocol_get(PySSLContext *self, void *Py_UNUSED(context))
 {
     PyObject *return_value = NULL;
-    Py_buffer protos = {NULL, NULL};
-
-    if (PyObject_GetBuffer(arg, &protos, PyBUF_SIMPLE) != 0) {
-        goto exit;
-    }
-    return_value = _ssl__SSLContext__set_alpn_protocols_impl(self, &protos);
 
-exit:
-    /* Cleanup for protos */
-    if (protos.obj) {
-       PyBuffer_Release(&protos);
-    }
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_protocol_get_impl(self);
+    Py_END_CRITICAL_SECTION();
 
     return return_value;
 }
@@ -599,7 +1419,9 @@ _ssl__SSLContext_load_cert_chain(PySSLContext *self, PyObject *const *args, Py_s
     }
     password = args[2];
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext_load_cert_chain_impl(self, certfile, keyfile, password);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -675,7 +1497,9 @@ _ssl__SSLContext_load_verify_locations(PySSLContext *self, PyObject *const *args
     }
     cadata = args[2];
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext_load_verify_locations_impl(self, cafile, capath, cadata);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -689,6 +1513,21 @@ PyDoc_STRVAR(_ssl__SSLContext_load_dh_params__doc__,
 #define _SSL__SSLCONTEXT_LOAD_DH_PARAMS_METHODDEF    \
     {"load_dh_params", (PyCFunction)_ssl__SSLContext_load_dh_params, METH_O, _ssl__SSLContext_load_dh_params__doc__},
 
+static PyObject *
+_ssl__SSLContext_load_dh_params_impl(PySSLContext *self, PyObject *filepath);
+
+static PyObject *
+_ssl__SSLContext_load_dh_params(PySSLContext *self, PyObject *filepath)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_load_dh_params_impl(self, filepath);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_ssl__SSLContext__wrap_socket__doc__,
 "_wrap_socket($self, /, sock, server_side, server_hostname=None, *,\n"
 "             owner=None, session=None)\n"
@@ -774,7 +1613,9 @@ _ssl__SSLContext__wrap_socket(PySSLContext *self, PyObject *const *args, Py_ssiz
     }
     session = args[4];
 skip_optional_kwonly:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext__wrap_socket_impl(self, sock, server_side, hostname_obj, owner, session);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -872,7 +1713,9 @@ _ssl__SSLContext__wrap_bio(PySSLContext *self, PyObject *const *args, Py_ssize_t
     }
     session = args[5];
 skip_optional_kwonly:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext__wrap_bio_impl(self, incoming, outgoing, server_side, hostname_obj, owner, session);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -892,7 +1735,13 @@ _ssl__SSLContext_session_stats_impl(PySSLContext *self);
 static PyObject *
 _ssl__SSLContext_session_stats(PySSLContext *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLContext_session_stats_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_session_stats_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLContext_set_default_verify_paths__doc__,
@@ -909,7 +1758,13 @@ _ssl__SSLContext_set_default_verify_paths_impl(PySSLContext *self);
 static PyObject *
 _ssl__SSLContext_set_default_verify_paths(PySSLContext *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLContext_set_default_verify_paths_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_set_default_verify_paths_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLContext_set_ecdh_curve__doc__,
@@ -920,6 +1775,83 @@ PyDoc_STRVAR(_ssl__SSLContext_set_ecdh_curve__doc__,
 #define _SSL__SSLCONTEXT_SET_ECDH_CURVE_METHODDEF    \
     {"set_ecdh_curve", (PyCFunction)_ssl__SSLContext_set_ecdh_curve, METH_O, _ssl__SSLContext_set_ecdh_curve__doc__},
 
+static PyObject *
+_ssl__SSLContext_set_ecdh_curve_impl(PySSLContext *self, PyObject *name);
+
+static PyObject *
+_ssl__SSLContext_set_ecdh_curve(PySSLContext *self, PyObject *name)
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_set_ecdh_curve_impl(self, name);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl__SSLContext_sni_callback__doc__,
+"Set a callback that will be called when a server name is provided by the SSL/TLS client in the SNI extension.\n"
+"\n"
+"If the argument is None then the callback is disabled. The method is called\n"
+"with the SSLSocket, the server name as a string, and the SSLContext object.\n"
+"\n"
+"See RFC 6066 for details of the SNI extension.");
+#if defined(_ssl__SSLContext_sni_callback_DOCSTR)
+#   undef _ssl__SSLContext_sni_callback_DOCSTR
+#endif
+#define _ssl__SSLContext_sni_callback_DOCSTR _ssl__SSLContext_sni_callback__doc__
+
+#if !defined(_ssl__SSLContext_sni_callback_DOCSTR)
+#  define _ssl__SSLContext_sni_callback_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF
+#  define _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF {"sni_callback", (getter)_ssl__SSLContext_sni_callback_get, (setter)_ssl__SSLContext_sni_callback_set, _ssl__SSLContext_sni_callback_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF {"sni_callback", (getter)_ssl__SSLContext_sni_callback_get, NULL, _ssl__SSLContext_sni_callback_DOCSTR},
+#endif
+
+static PyObject *
+_ssl__SSLContext_sni_callback_get_impl(PySSLContext *self);
+
+static PyObject *
+_ssl__SSLContext_sni_callback_get(PySSLContext *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_sni_callback_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+#if !defined(_ssl__SSLContext_sni_callback_DOCSTR)
+#  define _ssl__SSLContext_sni_callback_DOCSTR NULL
+#endif
+#if defined(_SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF)
+#  undef _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF
+#  define _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF {"sni_callback", (getter)_ssl__SSLContext_sni_callback_get, (setter)_ssl__SSLContext_sni_callback_set, _ssl__SSLContext_sni_callback_DOCSTR},
+#else
+#  define _SSL__SSLCONTEXT_SNI_CALLBACK_GETSETDEF {"sni_callback", NULL, (setter)_ssl__SSLContext_sni_callback_set, NULL},
+#endif
+
+static int
+_ssl__SSLContext_sni_callback_set_impl(PySSLContext *self, PyObject *value);
+
+static int
+_ssl__SSLContext_sni_callback_set(PySSLContext *self, PyObject *value, void *Py_UNUSED(context))
+{
+    int return_value;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_sni_callback_set_impl(self, value);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_ssl__SSLContext_cert_store_stats__doc__,
 "cert_store_stats($self, /)\n"
 "--\n"
@@ -941,7 +1873,13 @@ _ssl__SSLContext_cert_store_stats_impl(PySSLContext *self);
 static PyObject *
 _ssl__SSLContext_cert_store_stats(PySSLContext *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl__SSLContext_cert_store_stats_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl__SSLContext_cert_store_stats_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl__SSLContext_get_ca_certs__doc__,
@@ -1007,7 +1945,9 @@ _ssl__SSLContext_get_ca_certs(PySSLContext *self, PyObject *const *args, Py_ssiz
         goto exit;
     }
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext_get_ca_certs_impl(self, binary_form);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1062,7 +2002,9 @@ _ssl__SSLContext_set_psk_client_callback(PySSLContext *self, PyObject *const *ar
         goto exit;
     }
     callback = args[0];
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext_set_psk_client_callback_impl(self, callback);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1142,7 +2084,9 @@ _ssl__SSLContext_set_psk_server_callback(PySSLContext *self, PyObject *const *ar
         goto exit;
     }
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl__SSLContext_set_psk_server_callback_impl(self, callback, identity_hint);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1165,12 +2109,78 @@ _ssl_MemoryBIO(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         !_PyArg_NoKeywords("MemoryBIO", kwargs)) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(type);
     return_value = _ssl_MemoryBIO_impl(type);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
 }
 
+PyDoc_STRVAR(_ssl_MemoryBIO_pending__doc__,
+"The number of bytes pending in the memory BIO.");
+#if defined(_ssl_MemoryBIO_pending_DOCSTR)
+#   undef _ssl_MemoryBIO_pending_DOCSTR
+#endif
+#define _ssl_MemoryBIO_pending_DOCSTR _ssl_MemoryBIO_pending__doc__
+
+#if !defined(_ssl_MemoryBIO_pending_DOCSTR)
+#  define _ssl_MemoryBIO_pending_DOCSTR NULL
+#endif
+#if defined(_SSL_MEMORYBIO_PENDING_GETSETDEF)
+#  undef _SSL_MEMORYBIO_PENDING_GETSETDEF
+#  define _SSL_MEMORYBIO_PENDING_GETSETDEF {"pending", (getter)_ssl_MemoryBIO_pending_get, (setter)_ssl_MemoryBIO_pending_set, _ssl_MemoryBIO_pending_DOCSTR},
+#else
+#  define _SSL_MEMORYBIO_PENDING_GETSETDEF {"pending", (getter)_ssl_MemoryBIO_pending_get, NULL, _ssl_MemoryBIO_pending_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_MemoryBIO_pending_get_impl(PySSLMemoryBIO *self);
+
+static PyObject *
+_ssl_MemoryBIO_pending_get(PySSLMemoryBIO *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_MemoryBIO_pending_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_MemoryBIO_eof__doc__,
+"Whether the memory BIO is at EOF.");
+#if defined(_ssl_MemoryBIO_eof_DOCSTR)
+#   undef _ssl_MemoryBIO_eof_DOCSTR
+#endif
+#define _ssl_MemoryBIO_eof_DOCSTR _ssl_MemoryBIO_eof__doc__
+
+#if !defined(_ssl_MemoryBIO_eof_DOCSTR)
+#  define _ssl_MemoryBIO_eof_DOCSTR NULL
+#endif
+#if defined(_SSL_MEMORYBIO_EOF_GETSETDEF)
+#  undef _SSL_MEMORYBIO_EOF_GETSETDEF
+#  define _SSL_MEMORYBIO_EOF_GETSETDEF {"eof", (getter)_ssl_MemoryBIO_eof_get, (setter)_ssl_MemoryBIO_eof_set, _ssl_MemoryBIO_eof_DOCSTR},
+#else
+#  define _SSL_MEMORYBIO_EOF_GETSETDEF {"eof", (getter)_ssl_MemoryBIO_eof_get, NULL, _ssl_MemoryBIO_eof_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_MemoryBIO_eof_get_impl(PySSLMemoryBIO *self);
+
+static PyObject *
+_ssl_MemoryBIO_eof_get(PySSLMemoryBIO *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_MemoryBIO_eof_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
 PyDoc_STRVAR(_ssl_MemoryBIO_read__doc__,
 "read($self, size=-1, /)\n"
 "--\n"
@@ -1205,7 +2215,9 @@ _ssl_MemoryBIO_read(PySSLMemoryBIO *self, PyObject *const *args, Py_ssize_t narg
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl_MemoryBIO_read_impl(self, len);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1234,7 +2246,9 @@ _ssl_MemoryBIO_write(PySSLMemoryBIO *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = _ssl_MemoryBIO_write_impl(self, &b);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for b */
@@ -1262,7 +2276,173 @@ _ssl_MemoryBIO_write_eof_impl(PySSLMemoryBIO *self);
 static PyObject *
 _ssl_MemoryBIO_write_eof(PySSLMemoryBIO *self, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl_MemoryBIO_write_eof_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_MemoryBIO_write_eof_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_SSLSession_time__doc__,
+"Session creation time (seconds since epoch).");
+#if defined(_ssl_SSLSession_time_DOCSTR)
+#   undef _ssl_SSLSession_time_DOCSTR
+#endif
+#define _ssl_SSLSession_time_DOCSTR _ssl_SSLSession_time__doc__
+
+#if !defined(_ssl_SSLSession_time_DOCSTR)
+#  define _ssl_SSLSession_time_DOCSTR NULL
+#endif
+#if defined(_SSL_SSLSESSION_TIME_GETSETDEF)
+#  undef _SSL_SSLSESSION_TIME_GETSETDEF
+#  define _SSL_SSLSESSION_TIME_GETSETDEF {"time", (getter)_ssl_SSLSession_time_get, (setter)_ssl_SSLSession_time_set, _ssl_SSLSession_time_DOCSTR},
+#else
+#  define _SSL_SSLSESSION_TIME_GETSETDEF {"time", (getter)_ssl_SSLSession_time_get, NULL, _ssl_SSLSession_time_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_SSLSession_time_get_impl(PySSLSession *self);
+
+static PyObject *
+_ssl_SSLSession_time_get(PySSLSession *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_SSLSession_time_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_SSLSession_timeout__doc__,
+"Session timeout (delta in seconds).");
+#if defined(_ssl_SSLSession_timeout_DOCSTR)
+#   undef _ssl_SSLSession_timeout_DOCSTR
+#endif
+#define _ssl_SSLSession_timeout_DOCSTR _ssl_SSLSession_timeout__doc__
+
+#if !defined(_ssl_SSLSession_timeout_DOCSTR)
+#  define _ssl_SSLSession_timeout_DOCSTR NULL
+#endif
+#if defined(_SSL_SSLSESSION_TIMEOUT_GETSETDEF)
+#  undef _SSL_SSLSESSION_TIMEOUT_GETSETDEF
+#  define _SSL_SSLSESSION_TIMEOUT_GETSETDEF {"timeout", (getter)_ssl_SSLSession_timeout_get, (setter)_ssl_SSLSession_timeout_set, _ssl_SSLSession_timeout_DOCSTR},
+#else
+#  define _SSL_SSLSESSION_TIMEOUT_GETSETDEF {"timeout", (getter)_ssl_SSLSession_timeout_get, NULL, _ssl_SSLSession_timeout_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_SSLSession_timeout_get_impl(PySSLSession *self);
+
+static PyObject *
+_ssl_SSLSession_timeout_get(PySSLSession *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_SSLSession_timeout_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_SSLSession_ticket_lifetime_hint__doc__,
+"Ticket life time hint.");
+#if defined(_ssl_SSLSession_ticket_lifetime_hint_DOCSTR)
+#   undef _ssl_SSLSession_ticket_lifetime_hint_DOCSTR
+#endif
+#define _ssl_SSLSession_ticket_lifetime_hint_DOCSTR _ssl_SSLSession_ticket_lifetime_hint__doc__
+
+#if !defined(_ssl_SSLSession_ticket_lifetime_hint_DOCSTR)
+#  define _ssl_SSLSession_ticket_lifetime_hint_DOCSTR NULL
+#endif
+#if defined(_SSL_SSLSESSION_TICKET_LIFETIME_HINT_GETSETDEF)
+#  undef _SSL_SSLSESSION_TICKET_LIFETIME_HINT_GETSETDEF
+#  define _SSL_SSLSESSION_TICKET_LIFETIME_HINT_GETSETDEF {"ticket_lifetime_hint", (getter)_ssl_SSLSession_ticket_lifetime_hint_get, (setter)_ssl_SSLSession_ticket_lifetime_hint_set, _ssl_SSLSession_ticket_lifetime_hint_DOCSTR},
+#else
+#  define _SSL_SSLSESSION_TICKET_LIFETIME_HINT_GETSETDEF {"ticket_lifetime_hint", (getter)_ssl_SSLSession_ticket_lifetime_hint_get, NULL, _ssl_SSLSession_ticket_lifetime_hint_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_SSLSession_ticket_lifetime_hint_get_impl(PySSLSession *self);
+
+static PyObject *
+_ssl_SSLSession_ticket_lifetime_hint_get(PySSLSession *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_SSLSession_ticket_lifetime_hint_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_SSLSession_id__doc__,
+"Session ID.");
+#if defined(_ssl_SSLSession_id_DOCSTR)
+#   undef _ssl_SSLSession_id_DOCSTR
+#endif
+#define _ssl_SSLSession_id_DOCSTR _ssl_SSLSession_id__doc__
+
+#if !defined(_ssl_SSLSession_id_DOCSTR)
+#  define _ssl_SSLSession_id_DOCSTR NULL
+#endif
+#if defined(_SSL_SSLSESSION_ID_GETSETDEF)
+#  undef _SSL_SSLSESSION_ID_GETSETDEF
+#  define _SSL_SSLSESSION_ID_GETSETDEF {"id", (getter)_ssl_SSLSession_id_get, (setter)_ssl_SSLSession_id_set, _ssl_SSLSession_id_DOCSTR},
+#else
+#  define _SSL_SSLSESSION_ID_GETSETDEF {"id", (getter)_ssl_SSLSession_id_get, NULL, _ssl_SSLSession_id_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_SSLSession_id_get_impl(PySSLSession *self);
+
+static PyObject *
+_ssl_SSLSession_id_get(PySSLSession *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_SSLSession_id_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
+}
+
+PyDoc_STRVAR(_ssl_SSLSession_has_ticket__doc__,
+"Does the session contain a ticket?");
+#if defined(_ssl_SSLSession_has_ticket_DOCSTR)
+#   undef _ssl_SSLSession_has_ticket_DOCSTR
+#endif
+#define _ssl_SSLSession_has_ticket_DOCSTR _ssl_SSLSession_has_ticket__doc__
+
+#if !defined(_ssl_SSLSession_has_ticket_DOCSTR)
+#  define _ssl_SSLSession_has_ticket_DOCSTR NULL
+#endif
+#if defined(_SSL_SSLSESSION_HAS_TICKET_GETSETDEF)
+#  undef _SSL_SSLSESSION_HAS_TICKET_GETSETDEF
+#  define _SSL_SSLSESSION_HAS_TICKET_GETSETDEF {"has_ticket", (getter)_ssl_SSLSession_has_ticket_get, (setter)_ssl_SSLSession_has_ticket_set, _ssl_SSLSession_has_ticket_DOCSTR},
+#else
+#  define _SSL_SSLSESSION_HAS_TICKET_GETSETDEF {"has_ticket", (getter)_ssl_SSLSession_has_ticket_get, NULL, _ssl_SSLSession_has_ticket_DOCSTR},
+#endif
+
+static PyObject *
+_ssl_SSLSession_has_ticket_get_impl(PySSLSession *self);
+
+static PyObject *
+_ssl_SSLSession_has_ticket_get(PySSLSession *self, void *Py_UNUSED(context))
+{
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = _ssl_SSLSession_has_ticket_get_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl_RAND_add__doc__,
@@ -1315,7 +2495,9 @@ _ssl_RAND_add(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
             goto exit;
         }
     }
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_RAND_add_impl(module, &view, entropy);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     /* Cleanup for view */
@@ -1348,7 +2530,9 @@ _ssl_RAND_bytes(PyObject *module, PyObject *arg)
     if (n == -1 && PyErr_Occurred()) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_RAND_bytes_impl(module, n);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1372,7 +2556,13 @@ _ssl_RAND_status_impl(PyObject *module);
 static PyObject *
 _ssl_RAND_status(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl_RAND_status_impl(module);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(module);
+    return_value = _ssl_RAND_status_impl(module);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl_get_default_verify_paths__doc__,
@@ -1392,7 +2582,13 @@ _ssl_get_default_verify_paths_impl(PyObject *module);
 static PyObject *
 _ssl_get_default_verify_paths(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
-    return _ssl_get_default_verify_paths_impl(module);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(module);
+    return_value = _ssl_get_default_verify_paths_impl(module);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 PyDoc_STRVAR(_ssl_txt2obj__doc__,
@@ -1469,7 +2665,9 @@ _ssl_txt2obj(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         goto exit;
     }
 skip_optional_pos:
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_txt2obj_impl(module, txt, name);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1497,7 +2695,9 @@ _ssl_nid2obj(PyObject *module, PyObject *arg)
     if (nid == -1 && PyErr_Occurred()) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_nid2obj_impl(module, nid);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1572,7 +2772,9 @@ _ssl_enum_certificates(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_enum_certificates_impl(module, store_name);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1648,7 +2850,9 @@ _ssl_enum_crls(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyErr_SetString(PyExc_ValueError, "embedded null character");
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(module);
     return_value = _ssl_enum_crls_impl(module, store_name);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -1663,4 +2867,4 @@ _ssl_enum_crls(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
 #ifndef _SSL_ENUM_CRLS_METHODDEF
     #define _SSL_ENUM_CRLS_METHODDEF
 #endif /* !defined(_SSL_ENUM_CRLS_METHODDEF) */
-/*[clinic end generated code: output=28a22f2b09d631cb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8c4a1e44702afeb7 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic.c.h b/Modules/clinic/_testclinic.c.h
index 6a59baa2137b75..1255319357f8fc 100644
--- a/Modules/clinic/_testclinic.c.h
+++ b/Modules/clinic/_testclinic.c.h
@@ -1259,7 +1259,7 @@ keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1315,7 +1315,7 @@ keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1371,7 +1371,7 @@ keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1440,7 +1440,7 @@ keywords_opt_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1520,7 +1520,7 @@ keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1588,7 +1588,7 @@ posonly_keywords(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1644,7 +1644,7 @@ posonly_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1701,7 +1701,7 @@ posonly_keywords_kwonly(PyObject *module, PyObject *const *args, Py_ssize_t narg
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1760,7 +1760,7 @@ posonly_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1831,7 +1831,7 @@ posonly_opt_keywords_opt(PyObject *module, PyObject *const *args, Py_ssize_t nar
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1907,7 +1907,7 @@ posonly_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1978,7 +1978,7 @@ posonly_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2054,7 +2054,7 @@ posonly_keywords_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2129,7 +2129,7 @@ posonly_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_ssiz
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2213,7 +2213,7 @@ posonly_opt_keywords_opt_kwonly_opt(PyObject *module, PyObject *const *args, Py_
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2292,7 +2292,7 @@ keyword_only_parameter(PyObject *module, PyObject *const *args, Py_ssize_t nargs
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2347,7 +2347,7 @@ posonly_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2382,42 +2382,6 @@ posonly_vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     return return_value;
 }
 
-PyDoc_STRVAR(vararg_and_posonly__doc__,
-"vararg_and_posonly($module, a, /, *args)\n"
-"--\n"
-"\n");
-
-#define VARARG_AND_POSONLY_METHODDEF    \
-    {"vararg_and_posonly", _PyCFunction_CAST(vararg_and_posonly), METH_FASTCALL, vararg_and_posonly__doc__},
-
-static PyObject *
-vararg_and_posonly_impl(PyObject *module, PyObject *a, PyObject *args);
-
-static PyObject *
-vararg_and_posonly(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
-{
-    PyObject *return_value = NULL;
-    PyObject *a;
-    PyObject *__clinic_args = NULL;
-
-    if (!_PyArg_CheckPositional("vararg_and_posonly", nargs, 1, PY_SSIZE_T_MAX)) {
-        goto exit;
-    }
-    a = args[0];
-    __clinic_args = PyTuple_New(nargs - 1);
-    if (!__clinic_args) {
-        goto exit;
-    }
-    for (Py_ssize_t i = 0; i < nargs - 1; ++i) {
-        PyTuple_SET_ITEM(__clinic_args, i, Py_NewRef(args[1 + i]));
-    }
-    return_value = vararg_and_posonly_impl(module, a, __clinic_args);
-
-exit:
-    Py_XDECREF(__clinic_args);
-    return return_value;
-}
-
 PyDoc_STRVAR(vararg__doc__,
 "vararg($module, /, a, *args)\n"
 "--\n"
@@ -2442,7 +2406,7 @@ vararg(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwna
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2500,7 +2464,7 @@ vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2543,6 +2507,78 @@ vararg_with_default(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     return return_value;
 }
 
+PyDoc_STRVAR(vararg_with_default2__doc__,
+"vararg_with_default2($module, /, a, *args, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define VARARG_WITH_DEFAULT2_METHODDEF    \
+    {"vararg_with_default2", _PyCFunction_CAST(vararg_with_default2), METH_FASTCALL|METH_KEYWORDS, vararg_with_default2__doc__},
+
+static PyObject *
+vararg_with_default2_impl(PyObject *module, PyObject *a, PyObject *args,
+                          PyObject *b, PyObject *c);
+
+static PyObject *
+vararg_with_default2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "vararg_with_default2",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = Py_MIN(nargs, 1) + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *a;
+    PyObject *__clinic_args = NULL;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, 1, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    a = args[0];
+    __clinic_args = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        b = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    c = args[3];
+skip_optional_kwonly:
+    return_value = vararg_with_default2_impl(module, a, __clinic_args, b, c);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
 PyDoc_STRVAR(vararg_with_only_defaults__doc__,
 "vararg_with_only_defaults($module, /, *args, b=None)\n"
 "--\n"
@@ -2567,7 +2603,7 @@ vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize_t na
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2605,6 +2641,78 @@ vararg_with_only_defaults(PyObject *module, PyObject *const *args, Py_ssize_t na
     return return_value;
 }
 
+PyDoc_STRVAR(vararg_kwonly_req_opt__doc__,
+"vararg_kwonly_req_opt($module, /, *args, a, b=None, c=None)\n"
+"--\n"
+"\n");
+
+#define VARARG_KWONLY_REQ_OPT_METHODDEF    \
+    {"vararg_kwonly_req_opt", _PyCFunction_CAST(vararg_kwonly_req_opt), METH_FASTCALL|METH_KEYWORDS, vararg_kwonly_req_opt__doc__},
+
+static PyObject *
+vararg_kwonly_req_opt_impl(PyObject *module, PyObject *args, PyObject *a,
+                           PyObject *b, PyObject *c);
+
+static PyObject *
+vararg_kwonly_req_opt(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 3
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"a", "b", "c", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "vararg_kwonly_req_opt",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[4];
+    Py_ssize_t noptargs = 0 + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *__clinic_args = NULL;
+    PyObject *a;
+    PyObject *b = Py_None;
+    PyObject *c = Py_None;
+
+    args = _PyArg_UnpackKeywordsWithVararg(args, nargs, NULL, kwnames, &_parser, 0, 0, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    __clinic_args = args[0];
+    a = args[1];
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    if (args[2]) {
+        b = args[2];
+        if (!--noptargs) {
+            goto skip_optional_kwonly;
+        }
+    }
+    c = args[3];
+skip_optional_kwonly:
+    return_value = vararg_kwonly_req_opt_impl(module, __clinic_args, a, b, c);
+
+exit:
+    Py_XDECREF(__clinic_args);
+    return return_value;
+}
+
 PyDoc_STRVAR(gh_32092_oob__doc__,
 "gh_32092_oob($module, /, pos1, pos2, *varargs, kw1=None, kw2=None)\n"
 "--\n"
@@ -3219,4 +3327,4 @@ _testclinic_TestClass_get_defining_class_arg(PyObject *self, PyTypeObject *cls,
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=aa352c3a67300056 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=52b0a0d6e5c291f1 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testclinic_depr.c.h b/Modules/clinic/_testclinic_depr.c.h
index 732c3810408399..95a2cc4cb5ed6d 100644
--- a/Modules/clinic/_testclinic_depr.c.h
+++ b/Modules/clinic/_testclinic_depr.c.h
@@ -48,7 +48,7 @@ depr_star_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -133,7 +133,7 @@ depr_star_new_clone(PyObject *type, PyObject *const *args, Py_ssize_t nargs, PyO
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -215,7 +215,7 @@ depr_star_init(PyObject *self, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -300,7 +300,7 @@ depr_star_init_clone(PyObject *self, PyObject *const *args, Py_ssize_t nargs, Py
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -372,7 +372,7 @@ depr_star_init_noinline(PyObject *self, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -451,7 +451,7 @@ depr_kwd_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -534,7 +534,7 @@ depr_kwd_init(PyObject *self, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -608,7 +608,7 @@ depr_kwd_init_noinline(PyObject *self, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -635,7 +635,7 @@ depr_kwd_init_noinline(PyObject *self, PyObject *args, PyObject *kwargs)
         &a, &b, &c, &d, &d_length)) {
         goto exit;
     }
-    if (kwargs && PyDict_GET_SIZE(kwargs) && ((nargs < 2) || (nargs < 3 && PyDict_Contains(kwargs, &_Py_ID(c))))) {
+    if (kwargs && PyDict_GET_SIZE(kwargs) && ((nargs < 2) || (nargs < 3 && PyDict_Contains(kwargs, _Py_LATIN1_CHR('c'))))) {
         if (PyErr_Occurred()) { // PyDict_Contains() above can fail
             goto exit;
         }
@@ -692,7 +692,7 @@ depr_star_pos0_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), },
+        .ob_item = { _Py_LATIN1_CHR('a'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -770,7 +770,7 @@ depr_star_pos0_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -851,7 +851,7 @@ depr_star_pos0_len3_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -935,7 +935,7 @@ depr_star_pos1_len1_opt(PyObject *module, PyObject *const *args, Py_ssize_t narg
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1020,7 +1020,7 @@ depr_star_pos1_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1101,7 +1101,7 @@ depr_star_pos1_len2_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1186,7 +1186,7 @@ depr_star_pos2_len1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1269,7 +1269,7 @@ depr_star_pos2_len2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1354,7 +1354,7 @@ depr_star_pos2_len2_with_kwd(PyObject *module, PyObject *const *args, Py_ssize_t
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1441,7 +1441,7 @@ depr_star_noinline(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1525,7 +1525,7 @@ depr_star_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), &_Py_ID(h), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), _Py_LATIN1_CHR('f'), _Py_LATIN1_CHR('g'), _Py_LATIN1_CHR('h'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1618,7 +1618,7 @@ depr_kwd_required_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1699,7 +1699,7 @@ depr_kwd_required_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1780,7 +1780,7 @@ depr_kwd_optional_1(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), },
+        .ob_item = { _Py_LATIN1_CHR('b'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1866,7 +1866,7 @@ depr_kwd_optional_2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1959,7 +1959,7 @@ depr_kwd_optional_3(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2057,7 +2057,7 @@ depr_kwd_required_optional(PyObject *module, PyObject *const *args, Py_ssize_t n
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2145,7 +2145,7 @@ depr_kwd_noinline(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2171,7 +2171,7 @@ depr_kwd_noinline(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
         &a, &b, &c, &d, &d_length)) {
         goto exit;
     }
-    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 2) || (nargs < 3 && PySequence_Contains(kwnames, &_Py_ID(c))))) {
+    if (kwnames && PyTuple_GET_SIZE(kwnames) && ((nargs < 2) || (nargs < 3 && PySequence_Contains(kwnames, _Py_LATIN1_CHR('c'))))) {
         if (PyErr_Occurred()) { // PySequence_Contains() above can fail
             goto exit;
         }
@@ -2232,7 +2232,7 @@ depr_kwd_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), &_Py_ID(h), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), _Py_LATIN1_CHR('f'), _Py_LATIN1_CHR('g'), _Py_LATIN1_CHR('h'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2333,7 +2333,7 @@ depr_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(b), &_Py_ID(c), &_Py_ID(d), &_Py_ID(e), &_Py_ID(f), &_Py_ID(g), },
+        .ob_item = { _Py_LATIN1_CHR('b'), _Py_LATIN1_CHR('c'), _Py_LATIN1_CHR('d'), _Py_LATIN1_CHR('e'), _Py_LATIN1_CHR('f'), _Py_LATIN1_CHR('g'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2393,4 +2393,4 @@ depr_multi(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2c19d1804ba6e53b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ca6da2c7137554be input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testinternalcapi.c.h b/Modules/clinic/_testinternalcapi.c.h
index a61858561d5ef8..dcca9ecf735723 100644
--- a/Modules/clinic/_testinternalcapi.c.h
+++ b/Modules/clinic/_testinternalcapi.c.h
@@ -300,4 +300,64 @@ _testinternalcapi_test_long_numbits(PyObject *module, PyObject *Py_UNUSED(ignore
 {
     return _testinternalcapi_test_long_numbits_impl(module);
 }
-/*[clinic end generated code: output=9804015d77d36c77 input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(gh_119213_getargs__doc__,
+"gh_119213_getargs($module, /, spam=None)\n"
+"--\n"
+"\n"
+"Test _PyArg_Parser.kwtuple");
+
+#define GH_119213_GETARGS_METHODDEF    \
+    {"gh_119213_getargs", _PyCFunction_CAST(gh_119213_getargs), METH_FASTCALL|METH_KEYWORDS, gh_119213_getargs__doc__},
+
+static PyObject *
+gh_119213_getargs_impl(PyObject *module, PyObject *spam);
+
+static PyObject *
+gh_119213_getargs(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(spam), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"spam", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "gh_119213_getargs",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    PyObject *spam = Py_None;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    spam = args[0];
+skip_optional_pos:
+    return_value = gh_119213_getargs_impl(module, spam);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=4d0770a1c20fbf40 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_testmultiphase.c.h b/Modules/clinic/_testmultiphase.c.h
index 7ac361ece1acc3..452897b3fae99e 100644
--- a/Modules/clinic/_testmultiphase.c.h
+++ b/Modules/clinic/_testmultiphase.c.h
@@ -88,7 +88,7 @@ _testmultiphase_StateAccessType_increment_count_clinic(StateAccessTypeObject *se
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(n), &_Py_ID(twice), },
+        .ob_item = { _Py_LATIN1_CHR('n'), &_Py_ID(twice), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -162,4 +162,4 @@ _testmultiphase_StateAccessType_get_count(StateAccessTypeObject *self, PyTypeObj
     }
     return _testmultiphase_StateAccessType_get_count_impl(self, cls);
 }
-/*[clinic end generated code: output=2c199bad52e9cda7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=59cb50dae2d11dc1 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_winapi.c.h b/Modules/clinic/_winapi.c.h
index 9acb2dc4fe7eba..b0c54fc809f4c1 100644
--- a/Modules/clinic/_winapi.c.h
+++ b/Modules/clinic/_winapi.c.h
@@ -445,7 +445,7 @@ PyDoc_STRVAR(_winapi_CreateNamedPipe__doc__,
     {"CreateNamedPipe", _PyCFunction_CAST(_winapi_CreateNamedPipe), METH_FASTCALL, _winapi_CreateNamedPipe__doc__},
 
 static HANDLE
-_winapi_CreateNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD open_mode,
+_winapi_CreateNamedPipe_impl(PyObject *module, LPCWSTR name, DWORD open_mode,
                              DWORD pipe_mode, DWORD max_instances,
                              DWORD out_buffer_size, DWORD in_buffer_size,
                              DWORD default_timeout,
@@ -455,7 +455,7 @@ static PyObject *
 _winapi_CreateNamedPipe(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    LPCTSTR name;
+    LPCWSTR name = NULL;
     DWORD open_mode;
     DWORD pipe_mode;
     DWORD max_instances;
@@ -465,8 +465,8 @@ _winapi_CreateNamedPipe(PyObject *module, PyObject *const *args, Py_ssize_t narg
     LPSECURITY_ATTRIBUTES security_attributes;
     HANDLE _return_value;
 
-    if (!_PyArg_ParseStack(args, nargs, "skkkkkk" F_POINTER ":CreateNamedPipe",
-        &name, &open_mode, &pipe_mode, &max_instances, &out_buffer_size, &in_buffer_size, &default_timeout, &security_attributes)) {
+    if (!_PyArg_ParseStack(args, nargs, "O&kkkkkk" F_POINTER ":CreateNamedPipe",
+        _PyUnicode_WideCharString_Converter, &name, &open_mode, &pipe_mode, &max_instances, &out_buffer_size, &in_buffer_size, &default_timeout, &security_attributes)) {
         goto exit;
     }
     _return_value = _winapi_CreateNamedPipe_impl(module, name, open_mode, pipe_mode, max_instances, out_buffer_size, in_buffer_size, default_timeout, security_attributes);
@@ -479,6 +479,9 @@ _winapi_CreateNamedPipe(PyObject *module, PyObject *const *args, Py_ssize_t narg
     return_value = HANDLE_TO_PYNUM(_return_value);
 
 exit:
+    /* Cleanup for name */
+    PyMem_Free((void *)name);
+
     return return_value;
 }
 
@@ -1660,22 +1663,25 @@ PyDoc_STRVAR(_winapi_WaitNamedPipe__doc__,
     {"WaitNamedPipe", _PyCFunction_CAST(_winapi_WaitNamedPipe), METH_FASTCALL, _winapi_WaitNamedPipe__doc__},
 
 static PyObject *
-_winapi_WaitNamedPipe_impl(PyObject *module, LPCTSTR name, DWORD timeout);
+_winapi_WaitNamedPipe_impl(PyObject *module, LPCWSTR name, DWORD timeout);
 
 static PyObject *
 _winapi_WaitNamedPipe(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    LPCTSTR name;
+    LPCWSTR name = NULL;
     DWORD timeout;
 
-    if (!_PyArg_ParseStack(args, nargs, "sk:WaitNamedPipe",
-        &name, &timeout)) {
+    if (!_PyArg_ParseStack(args, nargs, "O&k:WaitNamedPipe",
+        _PyUnicode_WideCharString_Converter, &name, &timeout)) {
         goto exit;
     }
     return_value = _winapi_WaitNamedPipe_impl(module, name, timeout);
 
 exit:
+    /* Cleanup for name */
+    PyMem_Free((void *)name);
+
     return return_value;
 }
 
@@ -2118,4 +2124,4 @@ _winapi_CopyFile2(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
 
     return return_value;
 }
-/*[clinic end generated code: output=ed94a2482ede3744 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2304c62187a90140 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_zoneinfo.c.h b/Modules/clinic/_zoneinfo.c.h
index 9905b6425e2f79..bde88b5c4fa65b 100644
--- a/Modules/clinic/_zoneinfo.c.h
+++ b/Modules/clinic/_zoneinfo.c.h
@@ -6,8 +6,65 @@ preserve
 #  include "pycore_gc.h"          // PyGC_Head
 #  include "pycore_runtime.h"     // _Py_ID()
 #endif
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
+PyDoc_STRVAR(zoneinfo_ZoneInfo__doc__,
+"ZoneInfo(key)\n"
+"--\n"
+"\n"
+"Create a new ZoneInfo instance.");
+
+static PyObject *
+zoneinfo_ZoneInfo_impl(PyTypeObject *type, PyObject *key);
+
+static PyObject *
+zoneinfo_ZoneInfo(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(key), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"key", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "ZoneInfo",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    PyObject *key;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 1, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    key = fastargs[0];
+    Py_BEGIN_CRITICAL_SECTION(type);
+    return_value = zoneinfo_ZoneInfo_impl(type, key);
+    Py_END_CRITICAL_SECTION();
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(zoneinfo_ZoneInfo_from_file__doc__,
 "from_file($type, file_obj, /, key=None)\n"
 "--\n"
@@ -182,7 +239,9 @@ zoneinfo_ZoneInfo_clear_cache(PyTypeObject *type, PyTypeObject *cls, PyObject *c
     }
     only_keys = args[0];
 skip_optional_kwonly:
+    Py_BEGIN_CRITICAL_SECTION(type);
     return_value = zoneinfo_ZoneInfo_clear_cache_impl(type, cls, only_keys);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -372,4 +431,4 @@ zoneinfo_ZoneInfo__unpickle(PyTypeObject *type, PyTypeObject *cls, PyObject *con
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2a15f32fdd2ab6cd input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b4fdc0b30247110a input=a9049054013a1b77]*/
diff --git a/Modules/clinic/arraymodule.c.h b/Modules/clinic/arraymodule.c.h
index 60a03fe012550e..1046355dc38f56 100644
--- a/Modules/clinic/arraymodule.c.h
+++ b/Modules/clinic/arraymodule.c.h
@@ -2,6 +2,9 @@
 preserve
 [clinic start generated code]*/
 
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
+#endif
 #include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
@@ -685,4 +688,4 @@ PyDoc_STRVAR(array_arrayiterator___setstate____doc__,
 
 #define ARRAY_ARRAYITERATOR___SETSTATE___METHODDEF    \
     {"__setstate__", (PyCFunction)array_arrayiterator___setstate__, METH_O, array_arrayiterator___setstate____doc__},
-/*[clinic end generated code: output=52c55d9b1d026c1c input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f675e0d433ae34b6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/cmathmodule.c.h b/Modules/clinic/cmathmodule.c.h
index b709204af1d959..50745fd4f407a3 100644
--- a/Modules/clinic/cmathmodule.c.h
+++ b/Modules/clinic/cmathmodule.c.h
@@ -908,7 +908,7 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(rel_tol), &_Py_ID(abs_tol), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), &_Py_ID(rel_tol), &_Py_ID(abs_tol), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -982,4 +982,4 @@ cmath_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=364093af55bfe53f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=454309b21cfa9bf6 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/grpmodule.c.h b/Modules/clinic/grpmodule.c.h
index cc0ad210f42743..43700a11c15c91 100644
--- a/Modules/clinic/grpmodule.c.h
+++ b/Modules/clinic/grpmodule.c.h
@@ -2,35 +2,11 @@
 preserve
 [clinic start generated code]*/
 
-PyDoc_STRVAR(grp_getgrgid__doc__,
-"getgrgid($module, /, id)\n"
-"--\n"
-"\n"
-"Return the group database entry for the given numeric group ID.\n"
-"\n"
-"If id is not valid, raise KeyError.");
-
-#define GRP_GETGRGID_METHODDEF    \
-    {"getgrgid", (PyCFunction)(void(*)(void))grp_getgrgid, METH_VARARGS|METH_KEYWORDS, grp_getgrgid__doc__},
-
-static PyObject *
-grp_getgrgid_impl(PyObject *module, PyObject *id);
-
-static PyObject *
-grp_getgrgid(PyObject *module, PyObject *args, PyObject *kwargs)
-{
-    PyObject *return_value = NULL;
-    static char *_keywords[] = {"id", NULL};
-    PyObject *id;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:getgrgid", _keywords,
-        &id))
-        goto exit;
-    return_value = grp_getgrgid_impl(module, id);
-
-exit:
-    return return_value;
-}
+#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+#  include "pycore_gc.h"          // PyGC_Head
+#  include "pycore_runtime.h"     // _Py_ID()
+#endif
+#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
 PyDoc_STRVAR(grp_getgrnam__doc__,
 "getgrnam($module, /, name)\n"
@@ -41,21 +17,52 @@ PyDoc_STRVAR(grp_getgrnam__doc__,
 "If name is not valid, raise KeyError.");
 
 #define GRP_GETGRNAM_METHODDEF    \
-    {"getgrnam", (PyCFunction)(void(*)(void))grp_getgrnam, METH_VARARGS|METH_KEYWORDS, grp_getgrnam__doc__},
+    {"getgrnam", _PyCFunction_CAST(grp_getgrnam), METH_FASTCALL|METH_KEYWORDS, grp_getgrnam__doc__},
 
 static PyObject *
 grp_getgrnam_impl(PyObject *module, PyObject *name);
 
 static PyObject *
-grp_getgrnam(PyObject *module, PyObject *args, PyObject *kwargs)
+grp_getgrnam(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
-    static char *_keywords[] = {"name", NULL};
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(name), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"name", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "getgrnam",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
     PyObject *name;
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "U:getgrnam", _keywords,
-        &name))
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("getgrnam", "argument 'name'", "str", args[0]);
         goto exit;
+    }
+    name = args[0];
     return_value = grp_getgrnam_impl(module, name);
 
 exit:
@@ -82,4 +89,4 @@ grp_getgrall(PyObject *module, PyObject *Py_UNUSED(ignored))
 {
     return grp_getgrall_impl(module);
 }
-/*[clinic end generated code: output=81f180beb67fc585 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1168333f1b15de11 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/itertoolsmodule.c.h b/Modules/clinic/itertoolsmodule.c.h
index 3ec479943a83d4..050c21460d79d7 100644
--- a/Modules/clinic/itertoolsmodule.c.h
+++ b/Modules/clinic/itertoolsmodule.c.h
@@ -47,7 +47,7 @@ batched_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(iterable), &_Py_ID(n), &_Py_ID(strict), },
+        .ob_item = { &_Py_ID(iterable), _Py_LATIN1_CHR('n'), &_Py_ID(strict), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -509,7 +509,7 @@ itertools_combinations(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(iterable), &_Py_ID(r), },
+        .ob_item = { &_Py_ID(iterable), _Py_LATIN1_CHR('r'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -580,7 +580,7 @@ itertools_combinations_with_replacement(PyTypeObject *type, PyObject *args, PyOb
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(iterable), &_Py_ID(r), },
+        .ob_item = { &_Py_ID(iterable), _Py_LATIN1_CHR('r'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -650,7 +650,7 @@ itertools_permutations(PyTypeObject *type, PyObject *args, PyObject *kwargs)
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(iterable), &_Py_ID(r), },
+        .ob_item = { &_Py_ID(iterable), _Py_LATIN1_CHR('r'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -928,4 +928,4 @@ itertools_count(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c6a515f765da86b5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7b13be3075f2d6d3 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/mathmodule.c.h b/Modules/clinic/mathmodule.c.h
index 666b6b3790dae5..81eec310ddb21d 100644
--- a/Modules/clinic/mathmodule.c.h
+++ b/Modules/clinic/mathmodule.c.h
@@ -34,9 +34,9 @@ PyDoc_STRVAR(math_fsum__doc__,
 "fsum($module, seq, /)\n"
 "--\n"
 "\n"
-"Return an accurate floating point sum of values in the iterable seq.\n"
+"Return an accurate floating-point sum of values in the iterable seq.\n"
 "\n"
-"Assumes IEEE-754 floating point arithmetic.");
+"Assumes IEEE-754 floating-point arithmetic.");
 
 #define MATH_FSUM_METHODDEF    \
     {"fsum", (PyCFunction)math_fsum, METH_O, math_fsum__doc__},
@@ -610,7 +610,7 @@ PyDoc_STRVAR(math_isclose__doc__,
 "isclose($module, /, a, b, *, rel_tol=1e-09, abs_tol=0.0)\n"
 "--\n"
 "\n"
-"Determine whether two floating point numbers are close in value.\n"
+"Determine whether two floating-point numbers are close in value.\n"
 "\n"
 "  rel_tol\n"
 "    maximum difference for being considered \"close\", relative to the\n"
@@ -648,7 +648,7 @@ math_isclose(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(a), &_Py_ID(b), &_Py_ID(rel_tol), &_Py_ID(abs_tol), },
+        .ob_item = { _Py_LATIN1_CHR('a'), _Py_LATIN1_CHR('b'), &_Py_ID(rel_tol), &_Py_ID(abs_tol), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -1011,4 +1011,4 @@ math_ulp(PyObject *module, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=9fe3f007f474e015 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=755da3b1dbd9e45f input=a9049054013a1b77]*/
diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index a0d1f3238a6733..b69817ae9bb482 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -72,7 +72,7 @@ os_stat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("stat", "path", 0, 1);
+    path_t path = PATH_T_INITIALIZE_P("stat", "path", 0, 0, 0, 1);
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = 1;
 
@@ -154,7 +154,7 @@ os_lstat(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("lstat", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("lstat", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -250,7 +250,7 @@ os_access(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("access", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("access", "path", 0, 0, 0, 0);
     int mode;
     int dir_fd = DEFAULT_DIR_FD;
     int effective_ids = 0;
@@ -306,7 +306,7 @@ os_access(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     return return_value;
 }
 
-#if defined(HAVE_TTYNAME)
+#if defined(HAVE_TTYNAME_R)
 
 PyDoc_STRVAR(os_ttyname__doc__,
 "ttyname($module, fd, /)\n"
@@ -339,7 +339,7 @@ os_ttyname(PyObject *module, PyObject *arg)
     return return_value;
 }
 
-#endif /* defined(HAVE_TTYNAME) */
+#endif /* defined(HAVE_TTYNAME_R) */
 
 #if defined(HAVE_CTERMID)
 
@@ -409,7 +409,7 @@ os_chdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("chdir", "path", 0, PATH_HAVE_FCHDIR);
+    path_t path = PATH_T_INITIALIZE_P("chdir", "path", 0, 0, 0, PATH_HAVE_FCHDIR);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -560,7 +560,7 @@ os_chmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("chmod", "path", 0, PATH_HAVE_FCHMOD);
+    path_t path = PATH_T_INITIALIZE_P("chmod", "path", 0, 0, 0, PATH_HAVE_FCHMOD);
     int mode;
     int dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = CHMOD_DEFAULT_FOLLOW_SYMLINKS;
@@ -725,7 +725,7 @@ os_lchmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     };
     #undef KWTUPLE
     PyObject *argsbuf[2];
-    path_t path = PATH_T_INITIALIZE("lchmod", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("lchmod", "path", 0, 0, 0, 0);
     int mode;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
@@ -802,7 +802,7 @@ os_chflags(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("chflags", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("chflags", "path", 0, 0, 0, 0);
     unsigned long flags;
     int follow_symlinks = 1;
 
@@ -884,7 +884,7 @@ os_lchflags(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     };
     #undef KWTUPLE
     PyObject *argsbuf[2];
-    path_t path = PATH_T_INITIALIZE("lchflags", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("lchflags", "path", 0, 0, 0, 0);
     unsigned long flags;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
@@ -954,7 +954,7 @@ os_chroot(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("chroot", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("chroot", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -1190,7 +1190,7 @@ os_chown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
-    path_t path = PATH_T_INITIALIZE("chown", "path", 0, PATH_HAVE_FCHOWN);
+    path_t path = PATH_T_INITIALIZE_P("chown", "path", 0, 0, 0, PATH_HAVE_FCHOWN);
     uid_t uid;
     gid_t gid;
     int dir_fd = DEFAULT_DIR_FD;
@@ -1355,7 +1355,7 @@ os_lchown(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     };
     #undef KWTUPLE
     PyObject *argsbuf[3];
-    path_t path = PATH_T_INITIALIZE("lchown", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("lchown", "path", 0, 0, 0, 0);
     uid_t uid;
     gid_t gid;
 
@@ -1476,8 +1476,8 @@ os_link(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t src = PATH_T_INITIALIZE("link", "src", 0, 0);
-    path_t dst = PATH_T_INITIALIZE("link", "dst", 0, 0);
+    path_t src = PATH_T_INITIALIZE_P("link", "src", 0, 0, 0, 0);
+    path_t dst = PATH_T_INITIALIZE_P("link", "dst", 0, 0, 0, 0);
     int src_dir_fd = DEFAULT_DIR_FD;
     int dst_dir_fd = DEFAULT_DIR_FD;
     int follow_symlinks = 1;
@@ -1583,7 +1583,7 @@ os_listdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     #undef KWTUPLE
     PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
-    path_t path = PATH_T_INITIALIZE("listdir", "path", 1, PATH_HAVE_FDOPENDIR);
+    path_t path = PATH_T_INITIALIZE_P("listdir", "path", 1, 0, 0, PATH_HAVE_FDOPENDIR);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
     if (!args) {
@@ -1699,7 +1699,7 @@ os_listmounts(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t volume = PATH_T_INITIALIZE("listmounts", "volume", 0, 0);
+    path_t volume = PATH_T_INITIALIZE_P("listmounts", "volume", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -1763,7 +1763,7 @@ os__path_isdevdrive(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("_path_isdevdrive", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_path_isdevdrive", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -1800,7 +1800,7 @@ static PyObject *
 os__getfullpathname(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
-    path_t path = PATH_T_INITIALIZE("_getfullpathname", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_getfullpathname", "path", 0, 0, 0, 0);
 
     if (!path_converter(arg, &path)) {
         goto exit;
@@ -1834,7 +1834,7 @@ static PyObject *
 os__getfinalpathname(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
-    path_t path = PATH_T_INITIALIZE("_getfinalpathname", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_getfinalpathname", "path", 0, 0, 0, 0);
 
     if (!path_converter(arg, &path)) {
         goto exit;
@@ -1868,7 +1868,7 @@ static PyObject *
 os__findfirstfile(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
-    path_t path = PATH_T_INITIALIZE("_findfirstfile", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_findfirstfile", "path", 0, 0, 0, 0);
 
     if (!path_converter(arg, &path)) {
         goto exit;
@@ -1928,7 +1928,7 @@ os__getvolumepathname(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("_getvolumepathname", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_getvolumepathname", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -1992,7 +1992,7 @@ os__path_splitroot(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("_path_splitroot", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_path_splitroot", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -2014,6 +2014,144 @@ os__path_splitroot(PyObject *module, PyObject *const *args, Py_ssize_t nargs, Py
 
 #if defined(MS_WINDOWS)
 
+PyDoc_STRVAR(os__path_exists__doc__,
+"_path_exists($module, /, path)\n"
+"--\n"
+"\n"
+"Test whether a path exists.  Returns False for broken symbolic links.");
+
+#define OS__PATH_EXISTS_METHODDEF    \
+    {"_path_exists", _PyCFunction_CAST(os__path_exists), METH_FASTCALL|METH_KEYWORDS, os__path_exists__doc__},
+
+static int
+os__path_exists_impl(PyObject *module, path_t *path);
+
+static PyObject *
+os__path_exists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(path), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"path", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "_path_exists",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    path_t path = PATH_T_INITIALIZE_P("_path_exists", "path", 0, 0, 1, 1);
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_exists_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
+    return return_value;
+}
+
+#endif /* defined(MS_WINDOWS) */
+
+#if defined(MS_WINDOWS)
+
+PyDoc_STRVAR(os__path_lexists__doc__,
+"_path_lexists($module, /, path)\n"
+"--\n"
+"\n"
+"Test whether a path exists.  Returns True for broken symbolic links.");
+
+#define OS__PATH_LEXISTS_METHODDEF    \
+    {"_path_lexists", _PyCFunction_CAST(os__path_lexists), METH_FASTCALL|METH_KEYWORDS, os__path_lexists__doc__},
+
+static int
+os__path_lexists_impl(PyObject *module, path_t *path);
+
+static PyObject *
+os__path_lexists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(path), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"path", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "_path_lexists",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    path_t path = PATH_T_INITIALIZE_P("_path_lexists", "path", 0, 0, 1, 1);
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_lexists_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
+
+exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
+    return return_value;
+}
+
+#endif /* defined(MS_WINDOWS) */
+
+#if defined(MS_WINDOWS)
+
 PyDoc_STRVAR(os__path_isdir__doc__,
 "_path_isdir($module, /, s)\n"
 "--\n"
@@ -2023,8 +2161,8 @@ PyDoc_STRVAR(os__path_isdir__doc__,
 #define OS__PATH_ISDIR_METHODDEF    \
     {"_path_isdir", _PyCFunction_CAST(os__path_isdir), METH_FASTCALL|METH_KEYWORDS, os__path_isdir__doc__},
 
-static PyObject *
-os__path_isdir_impl(PyObject *module, PyObject *s);
+static int
+os__path_isdir_impl(PyObject *module, path_t *path);
 
 static PyObject *
 os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2039,7 +2177,7 @@ os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(s), },
+        .ob_item = { _Py_LATIN1_CHR('s'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2056,16 +2194,26 @@ os__path_isdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *s;
+    path_t path = PATH_T_INITIALIZE_P("_path_isdir", "path", 0, 0, 1, 1);
+    int _return_value;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    s = args[0];
-    return_value = os__path_isdir_impl(module, s);
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_isdir_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
@@ -2082,8 +2230,8 @@ PyDoc_STRVAR(os__path_isfile__doc__,
 #define OS__PATH_ISFILE_METHODDEF    \
     {"_path_isfile", _PyCFunction_CAST(os__path_isfile), METH_FASTCALL|METH_KEYWORDS, os__path_isfile__doc__},
 
-static PyObject *
-os__path_isfile_impl(PyObject *module, PyObject *path);
+static int
+os__path_isfile_impl(PyObject *module, path_t *path);
 
 static PyObject *
 os__path_isfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2115,16 +2263,26 @@ os__path_isfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    path_t path = PATH_T_INITIALIZE_P("_path_isfile", "path", 0, 0, 1, 1);
+    int _return_value;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_isfile_impl(module, path);
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_isfile_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
@@ -2132,20 +2290,20 @@ os__path_isfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
 
 #if defined(MS_WINDOWS)
 
-PyDoc_STRVAR(os__path_exists__doc__,
-"_path_exists($module, /, path)\n"
+PyDoc_STRVAR(os__path_islink__doc__,
+"_path_islink($module, /, path)\n"
 "--\n"
 "\n"
-"Test whether a path exists.  Returns False for broken symbolic links");
+"Test whether a path is a symbolic link");
 
-#define OS__PATH_EXISTS_METHODDEF    \
-    {"_path_exists", _PyCFunction_CAST(os__path_exists), METH_FASTCALL|METH_KEYWORDS, os__path_exists__doc__},
+#define OS__PATH_ISLINK_METHODDEF    \
+    {"_path_islink", _PyCFunction_CAST(os__path_islink), METH_FASTCALL|METH_KEYWORDS, os__path_islink__doc__},
 
-static PyObject *
-os__path_exists_impl(PyObject *module, PyObject *path);
+static int
+os__path_islink_impl(PyObject *module, path_t *path);
 
 static PyObject *
-os__path_exists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+os__path_islink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
@@ -2169,21 +2327,31 @@ os__path_exists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     static const char * const _keywords[] = {"path", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
-        .fname = "_path_exists",
+        .fname = "_path_islink",
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    path_t path = PATH_T_INITIALIZE_P("_path_islink", "path", 0, 0, 1, 1);
+    int _return_value;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_exists_impl(module, path);
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_islink_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
@@ -2191,20 +2359,20 @@ os__path_exists(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
 
 #if defined(MS_WINDOWS)
 
-PyDoc_STRVAR(os__path_islink__doc__,
-"_path_islink($module, /, path)\n"
+PyDoc_STRVAR(os__path_isjunction__doc__,
+"_path_isjunction($module, /, path)\n"
 "--\n"
 "\n"
-"Test whether a path is a symbolic link");
+"Test whether a path is a junction");
 
-#define OS__PATH_ISLINK_METHODDEF    \
-    {"_path_islink", _PyCFunction_CAST(os__path_islink), METH_FASTCALL|METH_KEYWORDS, os__path_islink__doc__},
+#define OS__PATH_ISJUNCTION_METHODDEF    \
+    {"_path_isjunction", _PyCFunction_CAST(os__path_isjunction), METH_FASTCALL|METH_KEYWORDS, os__path_isjunction__doc__},
 
-static PyObject *
-os__path_islink_impl(PyObject *module, PyObject *path);
+static int
+os__path_isjunction_impl(PyObject *module, path_t *path);
 
 static PyObject *
-os__path_islink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+os__path_isjunction(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
@@ -2228,36 +2396,49 @@ os__path_islink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     static const char * const _keywords[] = {"path", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
-        .fname = "_path_islink",
+        .fname = "_path_isjunction",
         .kwtuple = KWTUPLE,
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    path_t path = PATH_T_INITIALIZE_P("_path_isjunction", "path", 0, 0, 1, 1);
+    int _return_value;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_islink_impl(module, path);
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    _return_value = os__path_isjunction_impl(module, &path);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyBool_FromLong((long)_return_value);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
 #endif /* defined(MS_WINDOWS) */
 
 PyDoc_STRVAR(os__path_splitroot_ex__doc__,
-"_path_splitroot_ex($module, /, path)\n"
+"_path_splitroot_ex($module, /, p)\n"
 "--\n"
-"\n");
+"\n"
+"Split a pathname into drive, root and tail.\n"
+"\n"
+"The tail contains anything after the root.");
 
 #define OS__PATH_SPLITROOT_EX_METHODDEF    \
     {"_path_splitroot_ex", _PyCFunction_CAST(os__path_splitroot_ex), METH_FASTCALL|METH_KEYWORDS, os__path_splitroot_ex__doc__},
 
 static PyObject *
-os__path_splitroot_ex_impl(PyObject *module, PyObject *path);
+os__path_splitroot_ex_impl(PyObject *module, path_t *path);
 
 static PyObject *
 os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2272,7 +2453,7 @@ os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(path), },
+        .ob_item = { _Py_LATIN1_CHR('p'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2281,7 +2462,7 @@ os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     #  define KWTUPLE NULL
     #endif  // !Py_BUILD_CORE
 
-    static const char * const _keywords[] = {"path", NULL};
+    static const char * const _keywords[] = {"p", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
         .fname = "_path_splitroot_ex",
@@ -2289,20 +2470,21 @@ os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    path_t path = PATH_T_INITIALIZE("_path_splitroot_ex", "path", 0, 1, 1, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    if (!PyUnicode_Check(args[0])) {
-        _PyArg_BadArgument("_path_splitroot_ex", "argument 'path'", "str", args[0]);
+    if (!path_converter(args[0], &path)) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_splitroot_ex_impl(module, path);
+    return_value = os__path_splitroot_ex_impl(module, &path);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
@@ -2310,13 +2492,13 @@ PyDoc_STRVAR(os__path_normpath__doc__,
 "_path_normpath($module, /, path)\n"
 "--\n"
 "\n"
-"Basic path normalization.");
+"Normalize path, eliminating double slashes, etc.");
 
 #define OS__PATH_NORMPATH_METHODDEF    \
     {"_path_normpath", _PyCFunction_CAST(os__path_normpath), METH_FASTCALL|METH_KEYWORDS, os__path_normpath__doc__},
 
 static PyObject *
-os__path_normpath_impl(PyObject *module, PyObject *path);
+os__path_normpath_impl(PyObject *module, path_t *path);
 
 static PyObject *
 os__path_normpath(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
@@ -2348,16 +2530,21 @@ os__path_normpath(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyO
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    PyObject *path;
+    path_t path = PATH_T_INITIALIZE("_path_normpath", "path", 0, 1, 1, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
         goto exit;
     }
-    path = args[0];
-    return_value = os__path_normpath_impl(module, path);
+    if (!path_converter(args[0], &path)) {
+        goto exit;
+    }
+    return_value = os__path_normpath_impl(module, &path);
 
 exit:
+    /* Cleanup for path */
+    path_cleanup(&path);
+
     return return_value;
 }
 
@@ -2412,7 +2599,7 @@ os_mkdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("mkdir", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("mkdir", "path", 0, 0, 0, 0);
     int mode = 511;
     int dir_fd = DEFAULT_DIR_FD;
 
@@ -2673,8 +2860,8 @@ os_rename(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t src = PATH_T_INITIALIZE("rename", "src", 0, 0);
-    path_t dst = PATH_T_INITIALIZE("rename", "dst", 0, 0);
+    path_t src = PATH_T_INITIALIZE_P("rename", "src", 0, 0, 0, 0);
+    path_t dst = PATH_T_INITIALIZE_P("rename", "dst", 0, 0, 0, 0);
     int src_dir_fd = DEFAULT_DIR_FD;
     int dst_dir_fd = DEFAULT_DIR_FD;
 
@@ -2764,8 +2951,8 @@ os_replace(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t src = PATH_T_INITIALIZE("replace", "src", 0, 0);
-    path_t dst = PATH_T_INITIALIZE("replace", "dst", 0, 0);
+    path_t src = PATH_T_INITIALIZE_P("replace", "src", 0, 0, 0, 0);
+    path_t dst = PATH_T_INITIALIZE_P("replace", "dst", 0, 0, 0, 0);
     int src_dir_fd = DEFAULT_DIR_FD;
     int dst_dir_fd = DEFAULT_DIR_FD;
 
@@ -2853,7 +3040,7 @@ os_rmdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("rmdir", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("rmdir", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -3102,7 +3289,7 @@ os_unlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("unlink", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("unlink", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -3176,7 +3363,7 @@ os_remove(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("remove", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("remove", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -3294,7 +3481,7 @@ os_utime(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("utime", "path", 0, PATH_UTIME_HAVE_FD);
+    path_t path = PATH_T_INITIALIZE_P("utime", "path", 0, 0, 0, PATH_UTIME_HAVE_FD);
     PyObject *times = Py_None;
     PyObject *ns = NULL;
     int dir_fd = DEFAULT_DIR_FD;
@@ -3429,7 +3616,7 @@ static PyObject *
 os_execv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    path_t path = PATH_T_INITIALIZE("execv", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("execv", "path", 0, 0, 0, 0);
     PyObject *argv;
 
     if (!_PyArg_CheckPositional("execv", nargs, 2, 2)) {
@@ -3501,7 +3688,7 @@ os_execve(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     };
     #undef KWTUPLE
     PyObject *argsbuf[3];
-    path_t path = PATH_T_INITIALIZE("execve", "path", 0, PATH_HAVE_FEXECVE);
+    path_t path = PATH_T_INITIALIZE_P("execve", "path", 0, 0, 0, PATH_HAVE_FEXECVE);
     PyObject *argv;
     PyObject *env;
 
@@ -3597,7 +3784,7 @@ os_posix_spawn(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     #undef KWTUPLE
     PyObject *argsbuf[10];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
-    path_t path = PATH_T_INITIALIZE("posix_spawn", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("posix_spawn", "path", 0, 0, 0, 0);
     PyObject *argv;
     PyObject *env;
     PyObject *file_actions = NULL;
@@ -3747,7 +3934,7 @@ os_posix_spawnp(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObj
     #undef KWTUPLE
     PyObject *argsbuf[10];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
-    path_t path = PATH_T_INITIALIZE("posix_spawnp", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("posix_spawnp", "path", 0, 0, 0, 0);
     PyObject *argv;
     PyObject *env;
     PyObject *file_actions = NULL;
@@ -3851,7 +4038,7 @@ os_spawnv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     int mode;
-    path_t path = PATH_T_INITIALIZE("spawnv", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("spawnv", "path", 0, 0, 0, 0);
     PyObject *argv;
 
     if (!_PyArg_CheckPositional("spawnv", nargs, 3, 3)) {
@@ -3905,7 +4092,7 @@ os_spawnve(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
     int mode;
-    path_t path = PATH_T_INITIALIZE("spawnve", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("spawnve", "path", 0, 0, 0, 0);
     PyObject *argv;
     PyObject *env;
 
@@ -5827,7 +6014,7 @@ os_wait(PyObject *module, PyObject *Py_UNUSED(ignored))
 
 #endif /* defined(HAVE_WAIT) */
 
-#if (defined(__linux__) && defined(__NR_pidfd_open))
+#if (defined(__linux__) && defined(__NR_pidfd_open) && !(defined(__ANDROID__) && __ANDROID_API__ < 31))
 
 PyDoc_STRVAR(os_pidfd_open__doc__,
 "pidfd_open($module, /, pid, flags=0)\n"
@@ -5886,7 +6073,7 @@ os_pidfd_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObjec
     return return_value;
 }
 
-#endif /* (defined(__linux__) && defined(__NR_pidfd_open)) */
+#endif /* (defined(__linux__) && defined(__NR_pidfd_open) && !(defined(__ANDROID__) && __ANDROID_API__ < 31)) */
 
 #if defined(HAVE_SETNS)
 
@@ -6081,7 +6268,7 @@ os_readlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("readlink", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("readlink", "path", 0, 0, 0, 0);
     int dir_fd = DEFAULT_DIR_FD;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
@@ -6165,8 +6352,8 @@ os_symlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t src = PATH_T_INITIALIZE("symlink", "src", 0, 0);
-    path_t dst = PATH_T_INITIALIZE("symlink", "dst", 0, 0);
+    path_t src = PATH_T_INITIALIZE_P("symlink", "src", 0, 0, 0, 0);
+    path_t dst = PATH_T_INITIALIZE_P("symlink", "dst", 0, 0, 0, 0);
     int target_is_directory = 0;
     int dir_fd = DEFAULT_DIR_FD;
 
@@ -6221,7 +6408,7 @@ PyDoc_STRVAR(os_times__doc__,
 "\n"
 "The object returned behaves like a named tuple with these fields:\n"
 "  (utime, stime, cutime, cstime, elapsed_time)\n"
-"All fields are floating point numbers.");
+"All fields are floating-point numbers.");
 
 #define OS_TIMES_METHODDEF    \
     {"times", (PyCFunction)os_times, METH_NOARGS, os_times__doc__},
@@ -6808,7 +6995,7 @@ os_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwn
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("open", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("open", "path", 0, 0, 0, 0);
     int flags;
     int mode = 511;
     int dir_fd = DEFAULT_DIR_FD;
@@ -8396,7 +8583,7 @@ os_mkfifo(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("mkfifo", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("mkfifo", "path", 0, 0, 0, 0);
     int mode = 438;
     int dir_fd = DEFAULT_DIR_FD;
 
@@ -8496,7 +8683,7 @@ os_mknod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     #undef KWTUPLE
     PyObject *argsbuf[4];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t path = PATH_T_INITIALIZE("mknod", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("mknod", "path", 0, 0, 0, 0);
     int mode = 384;
     dev_t device = 0;
     int dir_fd = DEFAULT_DIR_FD;
@@ -8558,7 +8745,7 @@ PyDoc_STRVAR(os_major__doc__,
 #define OS_MAJOR_METHODDEF    \
     {"major", (PyCFunction)os_major, METH_O, os_major__doc__},
 
-static unsigned int
+static PyObject *
 os_major_impl(PyObject *module, dev_t device);
 
 static PyObject *
@@ -8566,16 +8753,11 @@ os_major(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
     dev_t device;
-    unsigned int _return_value;
 
     if (!_Py_Dev_Converter(arg, &device)) {
         goto exit;
     }
-    _return_value = os_major_impl(module, device);
-    if ((_return_value == (unsigned int)-1) && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = PyLong_FromUnsignedLong((unsigned long)_return_value);
+    return_value = os_major_impl(module, device);
 
 exit:
     return return_value;
@@ -8594,7 +8776,7 @@ PyDoc_STRVAR(os_minor__doc__,
 #define OS_MINOR_METHODDEF    \
     {"minor", (PyCFunction)os_minor, METH_O, os_minor__doc__},
 
-static unsigned int
+static PyObject *
 os_minor_impl(PyObject *module, dev_t device);
 
 static PyObject *
@@ -8602,16 +8784,11 @@ os_minor(PyObject *module, PyObject *arg)
 {
     PyObject *return_value = NULL;
     dev_t device;
-    unsigned int _return_value;
 
     if (!_Py_Dev_Converter(arg, &device)) {
         goto exit;
     }
-    _return_value = os_minor_impl(module, device);
-    if ((_return_value == (unsigned int)-1) && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = PyLong_FromUnsignedLong((unsigned long)_return_value);
+    return_value = os_minor_impl(module, device);
 
 exit:
     return return_value;
@@ -8631,25 +8808,23 @@ PyDoc_STRVAR(os_makedev__doc__,
     {"makedev", _PyCFunction_CAST(os_makedev), METH_FASTCALL, os_makedev__doc__},
 
 static dev_t
-os_makedev_impl(PyObject *module, int major, int minor);
+os_makedev_impl(PyObject *module, dev_t major, dev_t minor);
 
 static PyObject *
 os_makedev(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 {
     PyObject *return_value = NULL;
-    int major;
-    int minor;
+    dev_t major;
+    dev_t minor;
     dev_t _return_value;
 
     if (!_PyArg_CheckPositional("makedev", nargs, 2, 2)) {
         goto exit;
     }
-    major = PyLong_AsInt(args[0]);
-    if (major == -1 && PyErr_Occurred()) {
+    if (!_Py_Dev_Converter(args[0], &major)) {
         goto exit;
     }
-    minor = PyLong_AsInt(args[1]);
-    if (minor == -1 && PyErr_Occurred()) {
+    if (!_Py_Dev_Converter(args[1], &minor)) {
         goto exit;
     }
     _return_value = os_makedev_impl(module, major, minor);
@@ -8750,7 +8925,7 @@ os_truncate(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     };
     #undef KWTUPLE
     PyObject *argsbuf[2];
-    path_t path = PATH_T_INITIALIZE("truncate", "path", 0, PATH_HAVE_FTRUNCATE);
+    path_t path = PATH_T_INITIALIZE_P("truncate", "path", 0, 0, 0, PATH_HAVE_FTRUNCATE);
     Py_off_t length;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
@@ -9649,7 +9824,7 @@ os_statvfs(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("statvfs", "path", 0, PATH_HAVE_FSTATVFS);
+    path_t path = PATH_T_INITIALIZE_P("statvfs", "path", 0, 0, 0, PATH_HAVE_FSTATVFS);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -9713,7 +9888,7 @@ os__getdiskusage(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyOb
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("_getdiskusage", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_getdiskusage", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -9827,7 +10002,7 @@ os_pathconf(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     };
     #undef KWTUPLE
     PyObject *argsbuf[2];
-    path_t path = PATH_T_INITIALIZE("pathconf", "path", 0, PATH_HAVE_FPATHCONF);
+    path_t path = PATH_T_INITIALIZE_P("pathconf", "path", 0, 0, 0, PATH_HAVE_FPATHCONF);
     int name;
     long _return_value;
 
@@ -10017,10 +10192,10 @@ os_startfile(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
-    path_t filepath = PATH_T_INITIALIZE("startfile", "filepath", 0, 0);
+    path_t filepath = PATH_T_INITIALIZE_P("startfile", "filepath", 0, 0, 0, 0);
     const wchar_t *operation = NULL;
     const wchar_t *arguments = NULL;
-    path_t cwd = PATH_T_INITIALIZE("startfile", "cwd", 1, 0);
+    path_t cwd = PATH_T_INITIALIZE_P("startfile", "cwd", 1, 0, 0, 0);
     int show_cmd = 1;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 5, 0, argsbuf);
@@ -10355,8 +10530,8 @@ os_getxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("getxattr", "path", 0, 1);
-    path_t attribute = PATH_T_INITIALIZE("getxattr", "attribute", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("getxattr", "path", 0, 0, 0, 1);
+    path_t attribute = PATH_T_INITIALIZE_P("getxattr", "attribute", 0, 0, 0, 0);
     int follow_symlinks = 1;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
@@ -10442,8 +10617,8 @@ os_setxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     #undef KWTUPLE
     PyObject *argsbuf[5];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 3;
-    path_t path = PATH_T_INITIALIZE("setxattr", "path", 0, 1);
-    path_t attribute = PATH_T_INITIALIZE("setxattr", "attribute", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("setxattr", "path", 0, 0, 0, 1);
+    path_t attribute = PATH_T_INITIALIZE_P("setxattr", "attribute", 0, 0, 0, 0);
     Py_buffer value = {NULL, NULL};
     int flags = 0;
     int follow_symlinks = 1;
@@ -10550,8 +10725,8 @@ os_removexattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObje
     #undef KWTUPLE
     PyObject *argsbuf[3];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
-    path_t path = PATH_T_INITIALIZE("removexattr", "path", 0, 1);
-    path_t attribute = PATH_T_INITIALIZE("removexattr", "attribute", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("removexattr", "path", 0, 0, 0, 1);
+    path_t attribute = PATH_T_INITIALIZE_P("removexattr", "attribute", 0, 0, 0, 0);
     int follow_symlinks = 1;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
@@ -10636,7 +10811,7 @@ os_listxattr(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject
     #undef KWTUPLE
     PyObject *argsbuf[2];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
-    path_t path = PATH_T_INITIALIZE("listxattr", "path", 1, 1);
+    path_t path = PATH_T_INITIALIZE_P("listxattr", "path", 1, 0, 0, 1);
     int follow_symlinks = 1;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
@@ -11613,7 +11788,7 @@ os_scandir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *
     #undef KWTUPLE
     PyObject *argsbuf[1];
     Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
-    path_t path = PATH_T_INITIALIZE("scandir", "path", 1, PATH_HAVE_FDOPENDIR);
+    path_t path = PATH_T_INITIALIZE_P("scandir", "path", 1, 0, 0, PATH_HAVE_FDOPENDIR);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 1, 0, argsbuf);
     if (!args) {
@@ -11825,7 +12000,7 @@ os__add_dll_directory(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     };
     #undef KWTUPLE
     PyObject *argsbuf[1];
-    path_t path = PATH_T_INITIALIZE("_add_dll_directory", "path", 0, 0);
+    path_t path = PATH_T_INITIALIZE_P("_add_dll_directory", "path", 0, 0, 0, 0);
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
     if (!args) {
@@ -12001,6 +12176,42 @@ os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
 
 #endif /* defined(MS_WINDOWS) */
 
+PyDoc_STRVAR(os__inputhook__doc__,
+"_inputhook($module, /)\n"
+"--\n"
+"\n"
+"Calls PyOS_CallInputHook droppong the GIL first");
+
+#define OS__INPUTHOOK_METHODDEF    \
+    {"_inputhook", (PyCFunction)os__inputhook, METH_NOARGS, os__inputhook__doc__},
+
+static PyObject *
+os__inputhook_impl(PyObject *module);
+
+static PyObject *
+os__inputhook(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return os__inputhook_impl(module);
+}
+
+PyDoc_STRVAR(os__is_inputhook_installed__doc__,
+"_is_inputhook_installed($module, /)\n"
+"--\n"
+"\n"
+"Checks if PyOS_CallInputHook is set");
+
+#define OS__IS_INPUTHOOK_INSTALLED_METHODDEF    \
+    {"_is_inputhook_installed", (PyCFunction)os__is_inputhook_installed, METH_NOARGS, os__is_inputhook_installed__doc__},
+
+static PyObject *
+os__is_inputhook_installed_impl(PyObject *module);
+
+static PyObject *
+os__is_inputhook_installed(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+    return os__is_inputhook_installed_impl(module);
+}
+
 #ifndef OS_TTYNAME_METHODDEF
     #define OS_TTYNAME_METHODDEF
 #endif /* !defined(OS_TTYNAME_METHODDEF) */
@@ -12097,6 +12308,14 @@ os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
     #define OS__PATH_SPLITROOT_METHODDEF
 #endif /* !defined(OS__PATH_SPLITROOT_METHODDEF) */
 
+#ifndef OS__PATH_EXISTS_METHODDEF
+    #define OS__PATH_EXISTS_METHODDEF
+#endif /* !defined(OS__PATH_EXISTS_METHODDEF) */
+
+#ifndef OS__PATH_LEXISTS_METHODDEF
+    #define OS__PATH_LEXISTS_METHODDEF
+#endif /* !defined(OS__PATH_LEXISTS_METHODDEF) */
+
 #ifndef OS__PATH_ISDIR_METHODDEF
     #define OS__PATH_ISDIR_METHODDEF
 #endif /* !defined(OS__PATH_ISDIR_METHODDEF) */
@@ -12105,14 +12324,14 @@ os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
     #define OS__PATH_ISFILE_METHODDEF
 #endif /* !defined(OS__PATH_ISFILE_METHODDEF) */
 
-#ifndef OS__PATH_EXISTS_METHODDEF
-    #define OS__PATH_EXISTS_METHODDEF
-#endif /* !defined(OS__PATH_EXISTS_METHODDEF) */
-
 #ifndef OS__PATH_ISLINK_METHODDEF
     #define OS__PATH_ISLINK_METHODDEF
 #endif /* !defined(OS__PATH_ISLINK_METHODDEF) */
 
+#ifndef OS__PATH_ISJUNCTION_METHODDEF
+    #define OS__PATH_ISJUNCTION_METHODDEF
+#endif /* !defined(OS__PATH_ISJUNCTION_METHODDEF) */
+
 #ifndef OS_NICE_METHODDEF
     #define OS_NICE_METHODDEF
 #endif /* !defined(OS_NICE_METHODDEF) */
@@ -12660,4 +12879,4 @@ os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
     #define OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
 #endif /* !defined(OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF) */
-/*[clinic end generated code: output=c4698b47007cd6eb input=a9049054013a1b77]*/
+/*[clinic end generated code: output=a75be356cd4abca5 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/pyexpat.c.h b/Modules/clinic/pyexpat.c.h
index 343cb91b975038..03b74ba57155a3 100644
--- a/Modules/clinic/pyexpat.c.h
+++ b/Modules/clinic/pyexpat.c.h
@@ -4,7 +4,7 @@ preserve
 
 #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 #  include "pycore_gc.h"          // PyGC_Head
-#  include "pycore_runtime.h"     // _Py_ID()
+#  include "pycore_runtime.h"     // _Py_SINGLETON()
 #endif
 #include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()
 
@@ -545,4 +545,4 @@ pyexpat_ErrorString(PyObject *module, PyObject *arg)
 #ifndef PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
     #define PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF
 #endif /* !defined(PYEXPAT_XMLPARSER_USEFOREIGNDTD_METHODDEF) */
-/*[clinic end generated code: output=892e48e41f9b6e4b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=729eafd7abf72a57 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/selectmodule.c.h b/Modules/clinic/selectmodule.c.h
index dc7d3fb814396d..49c0e48d2e0eac 100644
--- a/Modules/clinic/selectmodule.c.h
+++ b/Modules/clinic/selectmodule.c.h
@@ -6,6 +6,7 @@ preserve
 #  include "pycore_gc.h"          // PyGC_Head
 #  include "pycore_runtime.h"     // _Py_ID()
 #endif
+#include "pycore_critical_section.h"// Py_BEGIN_CRITICAL_SECTION()
 #include "pycore_long.h"          // _PyLong_UnsignedShort_Converter()
 #include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 
@@ -25,7 +26,7 @@ PyDoc_STRVAR(select_select__doc__,
 "gotten from a fileno() method call on one of those.\n"
 "\n"
 "The optional 4th argument specifies a timeout in seconds; it may be\n"
-"a floating point number to specify fractions of seconds.  If it is absent\n"
+"a floating-point number to specify fractions of seconds.  If it is absent\n"
 "or None, the call will never time out.\n"
 "\n"
 "The return value is a tuple of three lists corresponding to the first three\n"
@@ -110,7 +111,9 @@ select_poll_register(pollObject *self, PyObject *const *args, Py_ssize_t nargs)
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_poll_register_impl(self, fd, eventmask);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -155,7 +158,9 @@ select_poll_modify(pollObject *self, PyObject *const *args, Py_ssize_t nargs)
     if (!_PyLong_UnsignedShort_Converter(args[1], &eventmask)) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_poll_modify_impl(self, fd, eventmask);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -187,7 +192,9 @@ select_poll_unregister(pollObject *self, PyObject *arg)
     if (fd < 0) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_poll_unregister_impl(self, fd);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -230,7 +237,9 @@ select_poll_poll(pollObject *self, PyObject *const *args, Py_ssize_t nargs)
     }
     timeout_obj = args[0];
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_poll_poll_impl(self, timeout_obj);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -281,7 +290,9 @@ select_devpoll_register(devpollObject *self, PyObject *const *args, Py_ssize_t n
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_devpoll_register_impl(self, fd, eventmask);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -332,7 +343,9 @@ select_devpoll_modify(devpollObject *self, PyObject *const *args, Py_ssize_t nar
         goto exit;
     }
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_devpoll_modify_impl(self, fd, eventmask);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -364,7 +377,9 @@ select_devpoll_unregister(devpollObject *self, PyObject *arg)
     if (fd < 0) {
         goto exit;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_devpoll_unregister_impl(self, fd);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -407,7 +422,9 @@ select_devpoll_poll(devpollObject *self, PyObject *const *args, Py_ssize_t nargs
     }
     timeout_obj = args[0];
 skip_optional:
+    Py_BEGIN_CRITICAL_SECTION(self);
     return_value = select_devpoll_poll_impl(self, timeout_obj);
+    Py_END_CRITICAL_SECTION();
 
 exit:
     return return_value;
@@ -434,7 +451,13 @@ select_devpoll_close_impl(devpollObject *self);
 static PyObject *
 select_devpoll_close(devpollObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return select_devpoll_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = select_devpoll_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 #endif /* (defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)) && defined(HAVE_SYS_DEVPOLL_H) */
@@ -456,7 +479,13 @@ select_devpoll_fileno_impl(devpollObject *self);
 static PyObject *
 select_devpoll_fileno(devpollObject *self, PyObject *Py_UNUSED(ignored))
 {
-    return select_devpoll_fileno_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = select_devpoll_fileno_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 #endif /* (defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)) && defined(HAVE_SYS_DEVPOLL_H) */
@@ -615,7 +644,13 @@ select_epoll_close_impl(pyEpoll_Object *self);
 static PyObject *
 select_epoll_close(pyEpoll_Object *self, PyObject *Py_UNUSED(ignored))
 {
-    return select_epoll_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = select_epoll_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 #endif /* defined(HAVE_EPOLL) */
@@ -1108,7 +1143,13 @@ select_kqueue_close_impl(kqueue_queue_Object *self);
 static PyObject *
 select_kqueue_close(kqueue_queue_Object *self, PyObject *Py_UNUSED(ignored))
 {
-    return select_kqueue_close_impl(self);
+    PyObject *return_value = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    return_value = select_kqueue_close_impl(self);
+    Py_END_CRITICAL_SECTION();
+
+    return return_value;
 }
 
 #endif /* defined(HAVE_KQUEUE) */
@@ -1319,4 +1360,4 @@ select_kqueue_control(kqueue_queue_Object *self, PyObject *const *args, Py_ssize
 #ifndef SELECT_KQUEUE_CONTROL_METHODDEF
     #define SELECT_KQUEUE_CONTROL_METHODDEF
 #endif /* !defined(SELECT_KQUEUE_CONTROL_METHODDEF) */
-/*[clinic end generated code: output=4fc17ae9b6cfdc86 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f99427b75cbe6d44 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index d074cc30d1e746..986c0289f2bfcb 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -597,7 +597,7 @@ PyDoc_STRVAR(signal_sigtimedwait__doc__,
 "\n"
 "Like sigwaitinfo(), but with a timeout.\n"
 "\n"
-"The timeout is specified in seconds, with floating point numbers allowed.");
+"The timeout is specified in seconds, with floating-point numbers allowed.");
 
 #define SIGNAL_SIGTIMEDWAIT_METHODDEF    \
     {"sigtimedwait", _PyCFunction_CAST(signal_sigtimedwait), METH_FASTCALL, signal_sigtimedwait__doc__},
@@ -670,7 +670,7 @@ signal_pthread_kill(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 
 #endif /* defined(HAVE_PTHREAD_KILL) */
 
-#if (defined(__linux__) && defined(__NR_pidfd_send_signal))
+#if (defined(__linux__) && defined(__NR_pidfd_send_signal) && !(defined(__ANDROID__) && __ANDROID_API__ < 31))
 
 PyDoc_STRVAR(signal_pidfd_send_signal__doc__,
 "pidfd_send_signal($module, pidfd, signalnum, siginfo=None, flags=0, /)\n"
@@ -723,7 +723,7 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
     return return_value;
 }
 
-#endif /* (defined(__linux__) && defined(__NR_pidfd_send_signal)) */
+#endif /* (defined(__linux__) && defined(__NR_pidfd_send_signal) && !(defined(__ANDROID__) && __ANDROID_API__ < 31)) */
 
 #ifndef SIGNAL_ALARM_METHODDEF
     #define SIGNAL_ALARM_METHODDEF
@@ -776,4 +776,4 @@ signal_pidfd_send_signal(PyObject *module, PyObject *const *args, Py_ssize_t nar
 #ifndef SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
     #define SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
 #endif /* !defined(SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF) */
-/*[clinic end generated code: output=1c11c1b6f12f26be input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c57b4b98fad6f4b8 input=a9049054013a1b77]*/
diff --git a/Modules/expat/expat.h b/Modules/expat/expat.h
index c2770be3897e58..523b37d8d5787d 100644
--- a/Modules/expat/expat.h
+++ b/Modules/expat/expat.h
@@ -130,7 +130,9 @@ enum XML_Error {
   /* Added in 2.3.0. */
   XML_ERROR_NO_BUFFER,
   /* Added in 2.4.0. */
-  XML_ERROR_AMPLIFICATION_LIMIT_BREACH
+  XML_ERROR_AMPLIFICATION_LIMIT_BREACH,
+  /* Added in 2.6.4. */
+  XML_ERROR_NOT_STARTED,
 };
 
 enum XML_Content_Type {
@@ -1066,7 +1068,7 @@ XML_SetReparseDeferralEnabled(XML_Parser parser, XML_Bool enabled);
 */
 #define XML_MAJOR_VERSION 2
 #define XML_MINOR_VERSION 6
-#define XML_MICRO_VERSION 2
+#define XML_MICRO_VERSION 4
 
 #ifdef __cplusplus
 }
diff --git a/Modules/expat/expat_external.h b/Modules/expat/expat_external.h
index 12c560e14716ff..567872b09836e1 100644
--- a/Modules/expat/expat_external.h
+++ b/Modules/expat/expat_external.h
@@ -40,6 +40,10 @@
 #ifndef Expat_External_INCLUDED
 #define Expat_External_INCLUDED 1
 
+/* Namespace external symbols to allow multiple libexpat version to
+   co-exist. */
+#include "pyexpatns.h"
+
 /* External API definitions */
 
 /* Expat tries very hard to make the API boundary very specifically
@@ -64,11 +68,6 @@
    compiled with the cdecl calling convention as the default since
    system headers may assume the cdecl convention.
 */
-
-/* Namespace external symbols to allow multiple libexpat version to
-   co-exist. */
-#include "pyexpatns.h"
-
 #ifndef XMLCALL
 #  if defined(_MSC_VER)
 #    define XMLCALL __cdecl
diff --git a/Modules/expat/refresh.sh b/Modules/expat/refresh.sh
new file mode 100755
index 00000000000000..82a9dbc23ad26b
--- /dev/null
+++ b/Modules/expat/refresh.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+#
+# Use this script to update libexpat
+
+set -e
+set -o pipefail
+
+if [[ "${BASH_VERSINFO[0]}" -lt 4 ]]; then
+  echo "A bash version >= 4 required. Got: $BASH_VERSION" >&2
+  exit 1
+fi
+
+# Update this when updating to a new version after verifying that the changes
+# the update brings in are good. These values are used for verifying the SBOM, too.
+expected_libexpat_tag="R_2_6_4"
+expected_libexpat_version="2.6.4"
+expected_libexpat_sha256="fd03b7172b3bd7427a3e7a812063f74754f24542429b634e0db6511b53fb2278"
+
+expat_dir="$(realpath "$(dirname -- "${BASH_SOURCE[0]}")")"
+cd ${expat_dir}
+
+# Step 1: download and copy files
+curl --location "https://github.com/libexpat/libexpat/releases/download/${expected_libexpat_tag}/expat-${expected_libexpat_version}.tar.gz" > libexpat.tar.gz
+echo "${expected_libexpat_sha256} libexpat.tar.gz" | sha256sum --check
+
+# Step 2: Pull files from the libexpat distribution
+declare -a lib_files
+lib_files=(
+  ascii.h
+  asciitab.h
+  expat.h
+  expat_external.h
+  iasciitab.h
+  internal.h
+  latin1tab.h
+  nametab.h
+  siphash.h
+  utf8tab.h
+  winconfig.h
+  xmlparse.c
+  xmlrole.c
+  xmlrole.h
+  xmltok.c
+  xmltok.h
+  xmltok_impl.c
+  xmltok_impl.h
+  xmltok_ns.c
+)
+for f in "${lib_files[@]}"; do
+  tar xzvf libexpat.tar.gz "expat-${expected_libexpat_version}/lib/${f}" --strip-components 2
+done
+rm libexpat.tar.gz
+
+# Step 3: Add the namespacing include to expat_external.h
+sed -i 's/#define Expat_External_INCLUDED 1/&\n\n\/* Namespace external symbols to allow multiple libexpat version to\n   co-exist. \*\/\n#include "pyexpatns.h"/' expat_external.h
+
+echo "Updated; verify all is okay using git diff and git status."
diff --git a/Modules/expat/siphash.h b/Modules/expat/siphash.h
index a1ed99e687bd6e..04f6f74585b5a2 100644
--- a/Modules/expat/siphash.h
+++ b/Modules/expat/siphash.h
@@ -126,8 +126,7 @@
    | ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40)                   \
    | ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))
 
-#define SIPHASH_INITIALIZER                                                    \
-  { 0, 0, 0, 0, {0}, 0, 0 }
+#define SIPHASH_INITIALIZER {0, 0, 0, 0, {0}, 0, 0}
 
 struct siphash {
   uint64_t v0, v1, v2, v3;
diff --git a/Modules/expat/xmlparse.c b/Modules/expat/xmlparse.c
index 2951fec70c56cb..a4e091e7c33c0a 100644
--- a/Modules/expat/xmlparse.c
+++ b/Modules/expat/xmlparse.c
@@ -1,4 +1,4 @@
-/* 2a14271ad4d35e82bde8ba210b4edb7998794bcbae54deab114046a300f9639a (2.6.2+)
+/* c5625880f4bf417c1463deee4eb92d86ff413f802048621c57e25fe483eb59e4 (2.6.4+)
                             __  __            _
                          ___\ \/ /_ __   __ _| |_
                         / _ \\  /| '_ \ / _` | __|
@@ -39,6 +39,8 @@
    Copyright (c) 2022      Sean McBride <sean@rogue-research.com>
    Copyright (c) 2023      Owain Davies <owaind@bath.edu>
    Copyright (c) 2023-2024 Sony Corporation / Snild Dolkow <snild@sony.com>
+   Copyright (c) 2024      Berkay Eren Ürün <berkay.ueruen@siemens.com>
+   Copyright (c) 2024      Hanno Böck <hanno@gentoo.org>
    Licensed under the MIT license:
 
    Permission is  hereby granted,  free of charge,  to any  person obtaining
@@ -294,7 +296,7 @@ typedef struct {
    The name of the element is stored in both the document and API
    encodings.  The memory buffer 'buf' is a separately-allocated
    memory area which stores the name.  During the XML_Parse()/
-   XMLParseBuffer() when the element is open, the memory for the 'raw'
+   XML_ParseBuffer() when the element is open, the memory for the 'raw'
    version of the name (in the document encoding) is shared with the
    document buffer.  If the element is open across calls to
    XML_Parse()/XML_ParseBuffer(), the buffer is re-allocated to
@@ -2038,6 +2040,12 @@ XML_ParseBuffer(XML_Parser parser, int len, int isFinal) {
 
   if (parser == NULL)
     return XML_STATUS_ERROR;
+
+  if (len < 0) {
+    parser->m_errorCode = XML_ERROR_INVALID_ARGUMENT;
+    return XML_STATUS_ERROR;
+  }
+
   switch (parser->m_parsingStatus.parsing) {
   case XML_SUSPENDED:
     parser->m_errorCode = XML_ERROR_SUSPENDED;
@@ -2227,6 +2235,9 @@ XML_StopParser(XML_Parser parser, XML_Bool resumable) {
   if (parser == NULL)
     return XML_STATUS_ERROR;
   switch (parser->m_parsingStatus.parsing) {
+  case XML_INITIALIZED:
+    parser->m_errorCode = XML_ERROR_NOT_STARTED;
+    return XML_STATUS_ERROR;
   case XML_SUSPENDED:
     if (resumable) {
       parser->m_errorCode = XML_ERROR_SUSPENDED;
@@ -2237,7 +2248,7 @@ XML_StopParser(XML_Parser parser, XML_Bool resumable) {
   case XML_FINISHED:
     parser->m_errorCode = XML_ERROR_FINISHED;
     return XML_STATUS_ERROR;
-  default:
+  case XML_PARSING:
     if (resumable) {
 #ifdef XML_DTD
       if (parser->m_isParamEntity) {
@@ -2248,6 +2259,9 @@ XML_StopParser(XML_Parser parser, XML_Bool resumable) {
       parser->m_parsingStatus.parsing = XML_SUSPENDED;
     } else
       parser->m_parsingStatus.parsing = XML_FINISHED;
+    break;
+  default:
+    assert(0);
   }
   return XML_STATUS_OK;
 }
@@ -2512,6 +2526,9 @@ XML_ErrorString(enum XML_Error code) {
   case XML_ERROR_AMPLIFICATION_LIMIT_BREACH:
     return XML_L(
         "limit on input amplification factor (from DTD and entities) breached");
+  /* Added in 2.6.4. */
+  case XML_ERROR_NOT_STARTED:
+    return XML_L("parser not started");
   }
   return NULL;
 }
@@ -5846,18 +5863,17 @@ processInternalEntity(XML_Parser parser, ENTITY *entity, XML_Bool betweenDecl) {
   /* Set a safe default value in case 'next' does not get set */
   next = textStart;
 
-#ifdef XML_DTD
   if (entity->is_param) {
     int tok
         = XmlPrologTok(parser->m_internalEncoding, textStart, textEnd, &next);
     result = doProlog(parser, parser->m_internalEncoding, textStart, textEnd,
                       tok, next, &next, XML_FALSE, XML_FALSE,
                       XML_ACCOUNT_ENTITY_EXPANSION);
-  } else
-#endif /* XML_DTD */
+  } else {
     result = doContent(parser, parser->m_tagLevel, parser->m_internalEncoding,
                        textStart, textEnd, &next, XML_FALSE,
                        XML_ACCOUNT_ENTITY_EXPANSION);
+  }
 
   if (result == XML_ERROR_NONE) {
     if (textEnd != next && parser->m_parsingStatus.parsing == XML_SUSPENDED) {
@@ -5894,18 +5910,17 @@ internalEntityProcessor(XML_Parser parser, const char *s, const char *end,
   /* Set a safe default value in case 'next' does not get set */
   next = textStart;
 
-#ifdef XML_DTD
   if (entity->is_param) {
     int tok
         = XmlPrologTok(parser->m_internalEncoding, textStart, textEnd, &next);
     result = doProlog(parser, parser->m_internalEncoding, textStart, textEnd,
                       tok, next, &next, XML_FALSE, XML_TRUE,
                       XML_ACCOUNT_ENTITY_EXPANSION);
-  } else
-#endif /* XML_DTD */
+  } else {
     result = doContent(parser, openEntity->startTagLevel,
                        parser->m_internalEncoding, textStart, textEnd, &next,
                        XML_FALSE, XML_ACCOUNT_ENTITY_EXPANSION);
+  }
 
   if (result != XML_ERROR_NONE)
     return result;
@@ -5932,7 +5947,6 @@ internalEntityProcessor(XML_Parser parser, const char *s, const char *end,
     return XML_ERROR_NONE;
   }
 
-#ifdef XML_DTD
   if (entity->is_param) {
     int tok;
     parser->m_processor = prologProcessor;
@@ -5940,9 +5954,7 @@ internalEntityProcessor(XML_Parser parser, const char *s, const char *end,
     return doProlog(parser, parser->m_encoding, s, end, tok, next, nextPtr,
                     (XML_Bool)! parser->m_parsingStatus.finalBuffer, XML_TRUE,
                     XML_ACCOUNT_DIRECT);
-  } else
-#endif /* XML_DTD */
-  {
+  } else {
     parser->m_processor = contentProcessor;
     /* see externalEntityContentProcessor vs contentProcessor */
     result = doContent(parser, parser->m_parentParser ? 1 : 0,
@@ -7016,6 +7028,16 @@ dtdCopy(XML_Parser oldParser, DTD *newDtd, const DTD *oldDtd,
     if (! newE)
       return 0;
     if (oldE->nDefaultAtts) {
+      /* Detect and prevent integer overflow.
+       * The preprocessor guard addresses the "always false" warning
+       * from -Wtype-limits on platforms where
+       * sizeof(int) < sizeof(size_t), e.g. on x86_64. */
+#if UINT_MAX >= SIZE_MAX
+      if ((size_t)oldE->nDefaultAtts
+          > ((size_t)(-1) / sizeof(DEFAULT_ATTRIBUTE))) {
+        return 0;
+      }
+#endif
       newE->defaultAtts
           = ms->malloc_fcn(oldE->nDefaultAtts * sizeof(DEFAULT_ATTRIBUTE));
       if (! newE->defaultAtts) {
@@ -7558,6 +7580,15 @@ nextScaffoldPart(XML_Parser parser) {
   int next;
 
   if (! dtd->scaffIndex) {
+    /* Detect and prevent integer overflow.
+     * The preprocessor guard addresses the "always false" warning
+     * from -Wtype-limits on platforms where
+     * sizeof(unsigned int) < sizeof(size_t), e.g. on x86_64. */
+#if UINT_MAX >= SIZE_MAX
+    if (parser->m_groupSize > ((size_t)(-1) / sizeof(int))) {
+      return -1;
+    }
+#endif
     dtd->scaffIndex = (int *)MALLOC(parser, parser->m_groupSize * sizeof(int));
     if (! dtd->scaffIndex)
       return -1;
@@ -7835,7 +7866,7 @@ accountingReportDiff(XML_Parser rootParser,
   assert(! rootParser->m_parentParser);
 
   fprintf(stderr,
-          " (+" EXPAT_FMT_PTRDIFF_T("6") " bytes %s|%d, xmlparse.c:%d) %*s\"",
+          " (+" EXPAT_FMT_PTRDIFF_T("6") " bytes %s|%u, xmlparse.c:%d) %*s\"",
           bytesMore, (account == XML_ACCOUNT_DIRECT) ? "DIR" : "EXP",
           levelsAwayFromRootParser, source_line, 10, "");
 
@@ -7948,7 +7979,7 @@ entityTrackingReportStats(XML_Parser rootParser, ENTITY *entity,
 
   fprintf(
       stderr,
-      "expat: Entities(%p): Count %9d, depth %2d/%2d %*s%s%s; %s length %d (xmlparse.c:%d)\n",
+      "expat: Entities(%p): Count %9u, depth %2u/%2u %*s%s%s; %s length %d (xmlparse.c:%d)\n",
       (void *)rootParser, rootParser->m_entity_stats.countEverOpened,
       rootParser->m_entity_stats.currentDepth,
       rootParser->m_entity_stats.maximumDepthSeen,
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index cfa3cbdc34bc86..2d16028a5232d0 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -75,7 +75,7 @@ static fault_handler_t faulthandler_handlers[] = {
 #ifdef SIGILL
     {SIGILL, 0, "Illegal instruction", },
 #endif
-    {SIGFPE, 0, "Floating point exception", },
+    {SIGFPE, 0, "Floating-point exception", },
     {SIGABRT, 0, "Aborted", },
     /* define SIGSEGV at the end to make it the default choice if searching the
        handler fails in faulthandler_fatal_error() */
@@ -237,7 +237,12 @@ faulthandler_dump_traceback_py(PyObject *self,
         return NULL;
 
     if (all_threads) {
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        /* gh-128400: Accessing other thread states while they're running
+         * isn't safe if those threads are running. */
+        _PyEval_StopTheWorld(interp);
         errmsg = _Py_DumpTracebackThreads(fd, NULL, tstate);
+        _PyEval_StartTheWorld(interp);
         if (errmsg != NULL) {
             PyErr_SetString(PyExc_RuntimeError, errmsg);
             return NULL;
diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
index b6eeec2c66f6e5..17ecf4c6731ff7 100644
--- a/Modules/fcntlmodule.c
+++ b/Modules/fcntlmodule.c
@@ -580,12 +580,17 @@ all_ins(PyObject* m)
 #ifdef F_GETPIPE_SZ
     if (PyModule_AddIntMacro(m, F_GETPIPE_SZ)) return -1;
 #endif
+
+/* On Android, FICLONE is blocked by SELinux. */
+#ifndef __ANDROID__
 #ifdef FICLONE
     if (PyModule_AddIntMacro(m, FICLONE)) return -1;
 #endif
 #ifdef FICLONERANGE
     if (PyModule_AddIntMacro(m, FICLONERANGE)) return -1;
 #endif
+#endif
+
 #ifdef F_GETOWN_EX
     // since Linux 2.6.32
     if (PyModule_AddIntMacro(m, F_GETOWN_EX)) return -1;
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 57e4aae9ed557e..b57a1c90723306 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -158,12 +158,17 @@ gc_set_threshold_impl(PyObject *module, int threshold0, int group_right_1,
 {
     GCState *gcstate = get_gc_state();
 
-    gcstate->young.threshold = threshold0;
+    gcstate->generations[0].threshold = threshold0;
     if (group_right_1) {
-        gcstate->old[0].threshold = threshold1;
+        gcstate->generations[1].threshold = threshold1;
     }
     if (group_right_2) {
-        gcstate->old[1].threshold = threshold2;
+        gcstate->generations[2].threshold = threshold2;
+
+        /* generations higher than 2 get the same threshold */
+        for (int i = 3; i < NUM_GENERATIONS; i++) {
+            gcstate->generations[i].threshold = gcstate->generations[2].threshold;
+        }
     }
     Py_RETURN_NONE;
 }
@@ -180,9 +185,9 @@ gc_get_threshold_impl(PyObject *module)
 {
     GCState *gcstate = get_gc_state();
     return Py_BuildValue("(iii)",
-                         gcstate->young.threshold,
-                         gcstate->old[0].threshold,
-                         0);
+                         gcstate->generations[0].threshold,
+                         gcstate->generations[1].threshold,
+                         gcstate->generations[2].threshold);
 }
 
 /*[clinic input]
@@ -202,14 +207,14 @@ gc_get_count_impl(PyObject *module)
     struct _gc_thread_state *gc = &tstate->gc;
 
     // Flush the local allocation count to the global count
-    _Py_atomic_add_int(&gcstate->young.count, (int)gc->alloc_count);
+    _Py_atomic_add_int(&gcstate->generations[0].count, (int)gc->alloc_count);
     gc->alloc_count = 0;
 #endif
 
     return Py_BuildValue("(iii)",
-                         gcstate->young.count,
-                         gcstate->old[gcstate->visited_space].count,
-                         gcstate->old[gcstate->visited_space^1].count);
+                         gcstate->generations[0].count,
+                         gcstate->generations[1].count,
+                         gcstate->generations[2].count);
 }
 
 /*[clinic input]
diff --git a/Modules/getpath.c b/Modules/getpath.c
index abed139028244a..d0128b20faeeae 100644
--- a/Modules/getpath.c
+++ b/Modules/getpath.c
@@ -951,6 +951,11 @@ _PyConfig_InitPathConfig(PyConfig *config, int compute_path_config)
         !wchar_to_dict(dict, "executable_dir", NULL) ||
         !wchar_to_dict(dict, "py_setpath", _PyPathConfig_GetGlobalModuleSearchPath()) ||
         !funcs_to_dict(dict, config->pathconfig_warnings) ||
+#ifdef Py_GIL_DISABLED
+        !decode_to_dict(dict, "ABI_THREAD", "t") ||
+#else
+        !decode_to_dict(dict, "ABI_THREAD", "") ||
+#endif
 #ifndef MS_WINDOWS
         PyDict_SetItemString(dict, "winreg", Py_None) < 0 ||
 #endif
diff --git a/Modules/getpath.py b/Modules/getpath.py
index bc7053224aaf16..1f1bfcb4f64dd4 100644
--- a/Modules/getpath.py
+++ b/Modules/getpath.py
@@ -40,6 +40,7 @@
 # EXE_SUFFIX        -- [in, opt] '.exe' on Windows/Cygwin/similar
 # VERSION_MAJOR     -- [in] sys.version_info.major
 # VERSION_MINOR     -- [in] sys.version_info.minor
+# ABI_THREAD        -- [in] either 't' for free-threaded builds or ''
 # PYWINVER          -- [in] the Windows platform-specific version (e.g. 3.8-32)
 
 # ** Values read from the environment **
@@ -172,17 +173,18 @@
 # ******************************************************************************
 
 platlibdir = config.get('platlibdir') or PLATLIBDIR
+ABI_THREAD = ABI_THREAD or ''
 
 if os_name == 'posix' or os_name == 'darwin':
     BUILDDIR_TXT = 'pybuilddir.txt'
     BUILD_LANDMARK = 'Modules/Setup.local'
     DEFAULT_PROGRAM_NAME = f'python{VERSION_MAJOR}'
-    STDLIB_SUBDIR = f'{platlibdir}/python{VERSION_MAJOR}.{VERSION_MINOR}'
+    STDLIB_SUBDIR = f'{platlibdir}/python{VERSION_MAJOR}.{VERSION_MINOR}{ABI_THREAD}'
     STDLIB_LANDMARKS = [f'{STDLIB_SUBDIR}/os.py', f'{STDLIB_SUBDIR}/os.pyc']
-    PLATSTDLIB_LANDMARK = f'{platlibdir}/python{VERSION_MAJOR}.{VERSION_MINOR}/lib-dynload'
+    PLATSTDLIB_LANDMARK = f'{platlibdir}/python{VERSION_MAJOR}.{VERSION_MINOR}{ABI_THREAD}/lib-dynload'
     BUILDSTDLIB_LANDMARKS = ['Lib/os.py']
     VENV_LANDMARK = 'pyvenv.cfg'
-    ZIP_LANDMARK = f'{platlibdir}/python{VERSION_MAJOR}{VERSION_MINOR}.zip'
+    ZIP_LANDMARK = f'{platlibdir}/python{VERSION_MAJOR}{VERSION_MINOR}{ABI_THREAD}.zip'
     DELIM = ':'
     SEP = '/'
 
diff --git a/Modules/grpmodule.c b/Modules/grpmodule.c
index f7d3e12f347ec2..e0534576ff1e82 100644
--- a/Modules/grpmodule.c
+++ b/Modules/grpmodule.c
@@ -1,9 +1,8 @@
 /* UNIX group file access module */
 
-// Need limited C API version 3.13 for PyMem_RawRealloc()
-#include "pyconfig.h"   // Py_GIL_DISABLED
-#ifndef Py_GIL_DISABLED
-#define Py_LIMITED_API 0x030d0000
+// Argument Clinic uses the internal C API
+#ifndef Py_BUILD_CORE_BUILTIN
+#  define Py_BUILD_CORE_MODULE 1
 #endif
 
 #include "Python.h"
@@ -110,20 +109,15 @@ mkgrent(PyObject *module, struct group *p)
     return v;
 }
 
-/*[clinic input]
-grp.getgrgid
-
-    id: object
-
-Return the group database entry for the given numeric group ID.
-
-If id is not valid, raise KeyError.
-[clinic start generated code]*/
-
 static PyObject *
-grp_getgrgid_impl(PyObject *module, PyObject *id)
-/*[clinic end generated code: output=30797c289504a1ba input=15fa0e2ccf5cda25]*/
+grp_getgrgid(PyObject *module, PyObject *args, PyObject *kwargs)
 {
+    static char *kwlist[] = {"id", NULL};
+    PyObject *id;
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O", kwlist, &id)) {
+        return NULL;
+    }
+
     PyObject *retval = NULL;
     int nomem = 0;
     char *buf = NULL, *buf2 = NULL;
@@ -190,6 +184,15 @@ grp_getgrgid_impl(PyObject *module, PyObject *id)
     return retval;
 }
 
+PyDoc_STRVAR(grp_getgrgid__doc__,
+"getgrgid($module, /, id)\n"
+"--\n"
+"\n"
+"Return the group database entry for the given numeric group ID.\n"
+"\n"
+"If id is not valid, raise KeyError.");
+
+
 /*[clinic input]
 grp.getgrnam
 
@@ -281,28 +284,38 @@ static PyObject *
 grp_getgrall_impl(PyObject *module)
 /*[clinic end generated code: output=585dad35e2e763d7 input=d7df76c825c367df]*/
 {
-    PyObject *d;
-    struct group *p;
-
-    if ((d = PyList_New(0)) == NULL)
+    PyObject *d = PyList_New(0);
+    if (d == NULL) {
         return NULL;
+    }
+
+    static PyMutex getgrall_mutex = {0};
+    PyMutex_Lock(&getgrall_mutex);
     setgrent();
+
+    struct group *p;
     while ((p = getgrent()) != NULL) {
+        // gh-126316: Don't release the mutex around mkgrent() since
+        // setgrent()/endgrent() are not reentrant / thread-safe. A deadlock
+        // is unlikely since mkgrent() should not be able to call arbitrary
+        // Python code.
         PyObject *v = mkgrent(module, p);
         if (v == NULL || PyList_Append(d, v) != 0) {
             Py_XDECREF(v);
-            Py_DECREF(d);
-            endgrent();
-            return NULL;
+            Py_CLEAR(d);
+            goto done;
         }
         Py_DECREF(v);
     }
+
+done:
     endgrent();
+    PyMutex_Unlock(&getgrall_mutex);
     return d;
 }
 
 static PyMethodDef grp_methods[] = {
-    GRP_GETGRGID_METHODDEF
+    {"getgrgid", _PyCFunction_CAST(grp_getgrgid), METH_VARARGS|METH_KEYWORDS, grp_getgrgid__doc__},
     GRP_GETGRNAM_METHODDEF
     GRP_GETGRALL_METHODDEF
     {NULL, NULL}
diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index 8641c2f87e6db2..8ed7683be28e6c 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -1,13 +1,14 @@
 #include "Python.h"
-#include "pycore_call.h"          // _PyObject_CallNoArgs()
-#include "pycore_ceval.h"         // _PyEval_GetBuiltin()
-#include "pycore_long.h"          // _PyLong_GetZero()
-#include "pycore_moduleobject.h"  // _PyModule_GetState()
-#include "pycore_typeobject.h"    // _PyType_GetModuleState()
-#include "pycore_object.h"        // _PyObject_GC_TRACK()
-#include "pycore_tuple.h"         // _PyTuple_ITEMS()
+#include "pycore_call.h"              // _PyObject_CallNoArgs()
+#include "pycore_ceval.h"             // _PyEval_GetBuiltin()
+#include "pycore_critical_section.h"  // Py_BEGIN_CRITICAL_SECTION()
+#include "pycore_long.h"              // _PyLong_GetZero()
+#include "pycore_moduleobject.h"      // _PyModule_GetState()
+#include "pycore_typeobject.h"        // _PyType_GetModuleState()
+#include "pycore_object.h"            // _PyObject_GC_TRACK()
+#include "pycore_tuple.h"             // _PyTuple_ITEMS()
 
-#include <stddef.h>               // offsetof()
+#include <stddef.h>                   // offsetof()
 
 /* Itertools module written and maintained
    by Raymond D. Hettinger <python@rcn.com>
@@ -1172,7 +1173,7 @@ itertools_tee_impl(PyObject *module, PyObject *iterable, Py_ssize_t n)
 /*[clinic end generated code: output=1c64519cd859c2f0 input=c99a1472c425d66d]*/
 {
     Py_ssize_t i;
-    PyObject *it, *copyable, *copyfunc, *result;
+    PyObject *it, *to, *result;
 
     if (n < 0) {
         PyErr_SetString(PyExc_ValueError, "n must be >= 0");
@@ -1189,41 +1190,24 @@ itertools_tee_impl(PyObject *module, PyObject *iterable, Py_ssize_t n)
         return NULL;
     }
 
-    if (PyObject_GetOptionalAttr(it, &_Py_ID(__copy__), &copyfunc) < 0) {
-        Py_DECREF(it);
+    (void)&_Py_ID(__copy__); // Retain a reference to __copy__
+    itertools_state *state = get_module_state(module);
+    to = tee_fromiterable(state, it);
+    Py_DECREF(it);
+    if (to == NULL) {
         Py_DECREF(result);
         return NULL;
     }
-    if (copyfunc != NULL) {
-        copyable = it;
-    }
-    else {
-        itertools_state *state = get_module_state(module);
-        copyable = tee_fromiterable(state, it);
-        Py_DECREF(it);
-        if (copyable == NULL) {
-            Py_DECREF(result);
-            return NULL;
-        }
-        copyfunc = PyObject_GetAttr(copyable, &_Py_ID(__copy__));
-        if (copyfunc == NULL) {
-            Py_DECREF(copyable);
-            Py_DECREF(result);
-            return NULL;
-        }
-    }
 
-    PyTuple_SET_ITEM(result, 0, copyable);
+    PyTuple_SET_ITEM(result, 0, to);
     for (i = 1; i < n; i++) {
-        copyable = _PyObject_CallNoArgs(copyfunc);
-        if (copyable == NULL) {
-            Py_DECREF(copyfunc);
+        to = tee_copy((teeobject *)to, NULL);
+        if (to == NULL) {
             Py_DECREF(result);
             return NULL;
         }
-        PyTuple_SET_ITEM(result, i, copyable);
+        PyTuple_SET_ITEM(result, i, to);
     }
-    Py_DECREF(copyfunc);
     return result;
 }
 
@@ -4035,9 +4019,9 @@ typedef struct {
 
 fast_mode:  when cnt an integer < PY_SSIZE_T_MAX and no step is specified.
 
-    assert(cnt != PY_SSIZE_T_MAX && long_cnt == NULL && long_step==PyLong(1));
+    assert(long_cnt == NULL && long_step==PyLong(1));
     Advances with:  cnt += 1
-    When count hits Y_SSIZE_T_MAX, switch to slow_mode.
+    When count hits PY_SSIZE_T_MAX, switch to slow_mode.
 
 slow_mode:  when cnt == PY_SSIZE_T_MAX, step is not int(1), or cnt is a float.
 
@@ -4122,7 +4106,7 @@ itertools_count_impl(PyTypeObject *type, PyObject *long_cnt,
     else
         cnt = PY_SSIZE_T_MAX;
 
-    assert((cnt != PY_SSIZE_T_MAX && long_cnt == NULL && fast_mode) ||
+    assert((long_cnt == NULL && fast_mode) ||
            (cnt == PY_SSIZE_T_MAX && long_cnt != NULL && !fast_mode));
     assert(!fast_mode ||
            (PyLong_Check(long_step) && PyLong_AS_LONG(long_step) == 1));
@@ -4186,15 +4170,36 @@ count_nextlong(countobject *lz)
 static PyObject *
 count_next(countobject *lz)
 {
+#ifndef Py_GIL_DISABLED
     if (lz->cnt == PY_SSIZE_T_MAX)
         return count_nextlong(lz);
     return PyLong_FromSsize_t(lz->cnt++);
+#else
+    // free-threading version
+    // fast mode uses compare-exchange loop
+    // slow mode uses a critical section
+    PyObject *returned;
+    Py_ssize_t cnt;
+
+    cnt = _Py_atomic_load_ssize_relaxed(&lz->cnt);
+    for (;;) {
+        if (cnt == PY_SSIZE_T_MAX) {
+            Py_BEGIN_CRITICAL_SECTION(lz);
+            returned = count_nextlong(lz);
+            Py_END_CRITICAL_SECTION();
+            return returned;
+        }
+        if (_Py_atomic_compare_exchange_ssize(&lz->cnt, &cnt, cnt + 1)) {
+            return PyLong_FromSsize_t(cnt);
+        }
+    }
+#endif
 }
 
 static PyObject *
 count_repr(countobject *lz)
 {
-    if (lz->cnt != PY_SSIZE_T_MAX)
+    if (lz->long_cnt == NULL)
         return PyUnicode_FromFormat("%s(%zd)",
                                     _PyType_Name(Py_TYPE(lz)), lz->cnt);
 
diff --git a/Modules/main.c b/Modules/main.c
index 8eded2639ad90a..3bf2241f2837a3 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -4,6 +4,7 @@
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_initconfig.h"    // _PyArgv
 #include "pycore_interp.h"        // _PyInterpreterState.sysdict
+#include "pycore_long.h"          // _PyLong_GetOne()
 #include "pycore_pathconfig.h"    // _PyPathConfig_ComputeSysPath0()
 #include "pycore_pylifecycle.h"   // _Py_PreInitializeFromPyArgv()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
@@ -259,6 +260,57 @@ pymain_run_command(wchar_t *command)
 }
 
 
+static int
+pymain_start_pyrepl_no_main(void)
+{
+    int res = 0;
+    PyObject *console = NULL;
+    PyObject *empty_tuple = NULL;
+    PyObject *kwargs = NULL;
+    PyObject *console_result = NULL;
+
+    PyObject *pyrepl = PyImport_ImportModule("_pyrepl.main");
+    if (pyrepl == NULL) {
+        fprintf(stderr, "Could not import _pyrepl.main\n");
+        res = pymain_exit_err_print();
+        goto done;
+    }
+    console = PyObject_GetAttrString(pyrepl, "interactive_console");
+    if (console == NULL) {
+        fprintf(stderr, "Could not access _pyrepl.main.interactive_console\n");
+        res = pymain_exit_err_print();
+        goto done;
+    }
+    empty_tuple = PyTuple_New(0);
+    if (empty_tuple == NULL) {
+        res = pymain_exit_err_print();
+        goto done;
+    }
+    kwargs = PyDict_New();
+    if (kwargs == NULL) {
+        res = pymain_exit_err_print();
+        goto done;
+    }
+    if (!PyDict_SetItemString(kwargs, "pythonstartup", _PyLong_GetOne())) {
+        _PyRuntime.signals.unhandled_keyboard_interrupt = 0;
+        console_result = PyObject_Call(console, empty_tuple, kwargs);
+        if (!console_result && PyErr_Occurred() == PyExc_KeyboardInterrupt) {
+            _PyRuntime.signals.unhandled_keyboard_interrupt = 1;
+        }
+        if (console_result == NULL) {
+            res = pymain_exit_err_print();
+        }
+    }
+done:
+    Py_XDECREF(console_result);
+    Py_XDECREF(kwargs);
+    Py_XDECREF(empty_tuple);
+    Py_XDECREF(console);
+    Py_XDECREF(pyrepl);
+    return res;
+}
+
+
 static int
 pymain_run_module(const wchar_t *modname, int set_argv0)
 {
@@ -322,6 +374,7 @@ pymain_run_file_obj(PyObject *program_name, PyObject *filename,
     if (fp == NULL) {
         // Ignore the OSError
         PyErr_Clear();
+        // TODO(picnixz): strerror() is locale dependent but not PySys_FormatStderr().
         PySys_FormatStderr("%S: can't open file %R: [Errno %d] %s\n",
                            program_name, filename, errno, strerror(errno));
         return 2;
@@ -542,13 +595,18 @@ pymain_repl(PyConfig *config, int *exitcode)
         return;
     }
 
-    if (!isatty(fileno(stdin))) {
+    if (PySys_Audit("cpython.run_stdin", NULL) < 0) {
+        return;
+    }
+
+    if (!isatty(fileno(stdin))
+        || _Py_GetEnv(config->use_environment, "PYTHON_BASIC_REPL")) {
         PyCompilerFlags cf = _PyCompilerFlags_INIT;
         int run = PyRun_AnyFileExFlags(stdin, "<stdin>", 0, &cf);
         *exitcode = (run != 0);
         return;
     }
-    int run = pymain_run_module(L"_pyrepl", 0);
+    int run = pymain_start_pyrepl_no_main();
     *exitcode = (run != 0);
     return;
 }
diff --git a/Modules/makesetup b/Modules/makesetup
index d41b6640bb5186..8bb971b152a522 100755
--- a/Modules/makesetup
+++ b/Modules/makesetup
@@ -274,7 +274,7 @@ sed -e 's/[ 	]*#.*//' -e '/^[ 	]*$/d' |
 				;;
 			esac
 			rule="$file: $objs"
-			rule="$rule; \$(BLDSHARED) $objs $libs \$(MODULE_LDFLAGS) -o $file"
+			rule="$rule; \$(BLDSHARED) $objs $libs \$(LIBPYTHON) -o $file"
 			echo "$rule" >>$rulesf
 		done
 	done
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index a79694730a8e4e..64a497306b2aac 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -107,7 +107,7 @@ typedef struct{ double hi; double lo; } DoubleLength;
 static DoubleLength
 dl_fast_sum(double a, double b)
 {
-    /* Algorithm 1.1. Compensated summation of two floating point numbers. */
+    /* Algorithm 1.1. Compensated summation of two floating-point numbers. */
     assert(fabs(a) >= fabs(b));
     double x = a + b;
     double y = (a - x) + b;
@@ -1354,14 +1354,14 @@ math.fsum
     seq: object
     /
 
-Return an accurate floating point sum of values in the iterable seq.
+Return an accurate floating-point sum of values in the iterable seq.
 
-Assumes IEEE-754 floating point arithmetic.
+Assumes IEEE-754 floating-point arithmetic.
 [clinic start generated code]*/
 
 static PyObject *
 math_fsum(PyObject *module, PyObject *seq)
-/*[clinic end generated code: output=ba5c672b87fe34fc input=c51b7d8caf6f6e82]*/
+/*[clinic end generated code: output=ba5c672b87fe34fc input=4506244ded6057dc]*/
 {
     PyObject *item, *iter, *sum = NULL;
     Py_ssize_t i, j, n = 0, m = NUM_PARTIALS;
@@ -2385,6 +2385,15 @@ math_fmod_impl(PyObject *module, double x, double y)
         return PyFloat_FromDouble(x);
     errno = 0;
     r = fmod(x, y);
+#ifdef _MSC_VER
+    /* Windows (e.g. Windows 10 with MSC v.1916) loose sign
+       for zero result.  But C99+ says: "if y is nonzero, the result
+       has the same sign as x".
+     */
+    if (r == 0.0 && y != 0.0) {
+        r = copysign(r, x);
+    }
+#endif
     if (Py_IS_NAN(r)) {
         if (!Py_IS_NAN(x) && !Py_IS_NAN(y))
             errno = EDOM;
@@ -2453,7 +2462,7 @@ Since lo**2 is less than 1/2 ulp(csum), we have csum+lo*lo == csum.
 To minimize loss of information during the accumulation of fractional
 values, each term has a separate accumulator.  This also breaks up
 sequential dependencies in the inner loop so the CPU can maximize
-floating point throughput. [4]  On an Apple M1 Max, hypot(*vec)
+floating-point throughput. [4]  On an Apple M1 Max, hypot(*vec)
 takes only 3.33 µsec when len(vec) == 1000.
 
 The square root differential correction is needed because a
@@ -3136,7 +3145,7 @@ math.isclose -> bool
         maximum difference for being considered "close", regardless of the
         magnitude of the input values
 
-Determine whether two floating point numbers are close in value.
+Determine whether two floating-point numbers are close in value.
 
 Return True if a is close in value to b, and False otherwise.
 
@@ -3151,7 +3160,7 @@ only close to themselves.
 static int
 math_isclose_impl(PyObject *module, double a, double b, double rel_tol,
                   double abs_tol)
-/*[clinic end generated code: output=b73070207511952d input=f28671871ea5bfba]*/
+/*[clinic end generated code: output=b73070207511952d input=12d41764468bfdb8]*/
 {
     double diff = 0.0;
 
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index dfc16ff4370349..99a85e9e49ad47 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -41,6 +41,7 @@
 
 #ifdef MS_WINDOWS
 #include <windows.h>
+#include <ntsecapi.h> // LsaNtStatusToWinError
 static int
 my_getpagesize(void)
 {
@@ -255,6 +256,208 @@ do {                                                                    \
 } while (0)
 #endif /* UNIX */
 
+#if defined(MS_WINDOWS) && !defined(DONT_USE_SEH)
+static DWORD
+filter_page_exception(EXCEPTION_POINTERS *ptrs, EXCEPTION_RECORD *record)
+{
+    *record = *ptrs->ExceptionRecord;
+    if (record->ExceptionCode == EXCEPTION_IN_PAGE_ERROR ||
+        record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
+    {
+        return EXCEPTION_EXECUTE_HANDLER;
+    }
+    return EXCEPTION_CONTINUE_SEARCH;
+}
+
+static DWORD
+filter_page_exception_method(mmap_object *self, EXCEPTION_POINTERS *ptrs,
+                             EXCEPTION_RECORD *record)
+{
+    *record = *ptrs->ExceptionRecord;
+    if (record->ExceptionCode == EXCEPTION_IN_PAGE_ERROR ||
+        record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
+    {
+
+        ULONG_PTR address = record->ExceptionInformation[1];
+        if (address >= (ULONG_PTR) self->data &&
+            address < (ULONG_PTR) self->data + (ULONG_PTR) self->size)
+        {
+            return EXCEPTION_EXECUTE_HANDLER;
+        }
+    }
+    return EXCEPTION_CONTINUE_SEARCH;
+}
+#endif
+
+#if defined(MS_WINDOWS) && !defined(DONT_USE_SEH)
+#define HANDLE_INVALID_MEM(sourcecode)                                     \
+do {                                                                       \
+    EXCEPTION_RECORD record;                                               \
+    __try {                                                                \
+        sourcecode                                                         \
+    }                                                                      \
+    __except (filter_page_exception(GetExceptionInformation(), &record)) { \
+        assert(record.ExceptionCode == EXCEPTION_IN_PAGE_ERROR ||          \
+               record.ExceptionCode == EXCEPTION_ACCESS_VIOLATION);        \
+        if (record.ExceptionCode == EXCEPTION_IN_PAGE_ERROR) {             \
+            NTSTATUS status = (NTSTATUS) record.ExceptionInformation[2];   \
+            ULONG code = LsaNtStatusToWinError(status);                    \
+            PyErr_SetFromWindowsErr(code);                                 \
+        }                                                                  \
+        else if (record.ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {     \
+            PyErr_SetFromWindowsErr(ERROR_NOACCESS);                       \
+        }                                                                  \
+        return -1;                                                         \
+    }                                                                      \
+} while (0)
+#else
+#define HANDLE_INVALID_MEM(sourcecode)                                     \
+do {                                                                       \
+    sourcecode                                                             \
+} while (0)
+#endif
+
+#if defined(MS_WINDOWS) && !defined(DONT_USE_SEH)
+#define HANDLE_INVALID_MEM_METHOD(self, sourcecode)                           \
+do {                                                                          \
+    EXCEPTION_RECORD record;                                                  \
+    __try {                                                                   \
+        sourcecode                                                            \
+    }                                                                         \
+    __except (filter_page_exception_method(self, GetExceptionInformation(),   \
+                                           &record)) {                        \
+        assert(record.ExceptionCode == EXCEPTION_IN_PAGE_ERROR ||             \
+               record.ExceptionCode == EXCEPTION_ACCESS_VIOLATION);           \
+        if (record.ExceptionCode == EXCEPTION_IN_PAGE_ERROR) {                \
+            NTSTATUS status = (NTSTATUS) record.ExceptionInformation[2];      \
+            ULONG code = LsaNtStatusToWinError(status);                       \
+            PyErr_SetFromWindowsErr(code);                                    \
+        }                                                                     \
+        else if (record.ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {        \
+            PyErr_SetFromWindowsErr(ERROR_NOACCESS);                          \
+        }                                                                     \
+        return -1;                                                            \
+    }                                                                         \
+} while (0)
+#else
+#define HANDLE_INVALID_MEM_METHOD(self, sourcecode)                           \
+do {                                                                          \
+    sourcecode                                                                \
+} while (0)
+#endif
+
+int
+safe_memcpy(void *dest, const void *src, size_t count)
+{
+    HANDLE_INVALID_MEM(
+        memcpy(dest, src, count);
+    );
+    return 0;
+}
+
+int
+safe_byte_copy(char *dest, const char *src)
+{
+    HANDLE_INVALID_MEM(
+        *dest = *src;
+    );
+    return 0;
+}
+
+int
+safe_memchr(char **out, const void *ptr, int ch, size_t count)
+{
+    HANDLE_INVALID_MEM(
+        *out = (char *) memchr(ptr, ch, count);
+    );
+    return 0;
+}
+
+int
+safe_memmove(void *dest, const void *src, size_t count)
+{
+    HANDLE_INVALID_MEM(
+        memmove(dest, src, count);
+    );
+    return 0;
+}
+
+int
+safe_copy_from_slice(char *dest, const char *src, Py_ssize_t start,
+                     Py_ssize_t step, Py_ssize_t slicelen)
+{
+    HANDLE_INVALID_MEM(
+        size_t cur;
+        Py_ssize_t i;
+        for (cur = start, i = 0; i < slicelen; cur += step, i++) {
+            dest[cur] = src[i];
+        }
+    );
+    return 0;
+}
+
+int
+safe_copy_to_slice(char *dest, const char *src, Py_ssize_t start,
+                   Py_ssize_t step, Py_ssize_t slicelen)
+{
+    HANDLE_INVALID_MEM(
+        size_t cur;
+        Py_ssize_t i;
+        for (cur = start, i = 0; i < slicelen; cur += step, i++) {
+            dest[i] = src[cur];
+        }
+    );
+    return 0;
+}
+
+
+int
+_safe_PyBytes_Find(Py_ssize_t *out, mmap_object *self, const char *haystack,
+                   Py_ssize_t len_haystack, const char *needle,
+                   Py_ssize_t len_needle, Py_ssize_t offset)
+{
+    HANDLE_INVALID_MEM_METHOD(self,
+        *out = _PyBytes_Find(haystack, len_haystack, needle, len_needle, offset);
+    );
+    return 0;
+}
+
+int
+_safe_PyBytes_ReverseFind(Py_ssize_t *out, mmap_object *self,
+                          const char *haystack, Py_ssize_t len_haystack,
+                          const char *needle, Py_ssize_t len_needle,
+                          Py_ssize_t offset)
+{
+    HANDLE_INVALID_MEM_METHOD(self,
+        *out = _PyBytes_ReverseFind(haystack, len_haystack, needle, len_needle,
+                                    offset);
+    );
+    return 0;
+}
+
+PyObject *
+_safe_PyBytes_FromStringAndSize(char *start, size_t num_bytes) {
+    if (num_bytes == 1) {
+        char dest;
+        if (safe_byte_copy(&dest, start) < 0) {
+            return NULL;
+        }
+        else {
+            return PyBytes_FromStringAndSize(&dest, 1);
+        }
+    }
+    else {
+        PyObject *result = PyBytes_FromStringAndSize(NULL, num_bytes);
+        if (result == NULL) {
+            return NULL;
+        }
+        if (safe_memcpy(PyBytes_AS_STRING(result), start, num_bytes) < 0) {
+            Py_CLEAR(result);
+        }
+        return result;
+    }
+}
+
 static PyObject *
 mmap_read_byte_method(mmap_object *self,
                       PyObject *Py_UNUSED(ignored))
@@ -264,7 +467,12 @@ mmap_read_byte_method(mmap_object *self,
         PyErr_SetString(PyExc_ValueError, "read byte out of range");
         return NULL;
     }
-    return PyLong_FromLong((unsigned char)self->data[self->pos++]);
+    char dest;
+    if (safe_byte_copy(&dest, self->data + self->pos) < 0) {
+        return NULL;
+    }
+    self->pos++;
+    return PyLong_FromLong((unsigned char) dest);
 }
 
 static PyObject *
@@ -273,7 +481,6 @@ mmap_read_line_method(mmap_object *self,
 {
     Py_ssize_t remaining;
     char *start, *eol;
-    PyObject *result;
 
     CHECK_VALID(NULL);
 
@@ -281,13 +488,20 @@ mmap_read_line_method(mmap_object *self,
     if (!remaining)
         return PyBytes_FromString("");
     start = self->data + self->pos;
-    eol = memchr(start, '\n', remaining);
+
+    if (safe_memchr(&eol, start, '\n', remaining) < 0) {
+        return NULL;
+    }
+
     if (!eol)
         eol = self->data + self->size;
     else
         ++eol; /* advance past newline */
-    result = PyBytes_FromStringAndSize(start, (eol - start));
-    self->pos += (eol - start);
+
+    PyObject *result = _safe_PyBytes_FromStringAndSize(start, eol - start);
+    if (result != NULL) {
+        self->pos += (eol - start);
+    }
     return result;
 }
 
@@ -296,7 +510,6 @@ mmap_read_method(mmap_object *self,
                  PyObject *args)
 {
     Py_ssize_t num_bytes = PY_SSIZE_T_MAX, remaining;
-    PyObject *result;
 
     CHECK_VALID(NULL);
     if (!PyArg_ParseTuple(args, "|O&:read", _Py_convert_optional_to_ssize_t, &num_bytes))
@@ -307,8 +520,12 @@ mmap_read_method(mmap_object *self,
     remaining = (self->pos < self->size) ? self->size - self->pos : 0;
     if (num_bytes < 0 || num_bytes > remaining)
         num_bytes = remaining;
-    result = PyBytes_FromStringAndSize(&self->data[self->pos], num_bytes);
-    self->pos += num_bytes;
+
+    PyObject *result = _safe_PyBytes_FromStringAndSize(self->data + self->pos,
+                                                       num_bytes);
+    if (result != NULL) {
+        self->pos += num_bytes;
+    }
     return result;
 }
 
@@ -341,25 +558,38 @@ mmap_gfind(mmap_object *self,
         else if (end > self->size)
             end = self->size;
 
-        Py_ssize_t res;
+        Py_ssize_t index;
+        PyObject *result;
         CHECK_VALID_OR_RELEASE(NULL, view);
         if (end < start) {
-            res = -1;
+            result = PyLong_FromSsize_t(-1);
         }
         else if (reverse) {
             assert(0 <= start && start <= end && end <= self->size);
-            res = _PyBytes_ReverseFind(
+            if (_safe_PyBytes_ReverseFind(&index, self,
                 self->data + start, end - start,
-                view.buf, view.len, start);
+                view.buf, view.len, start) < 0)
+            {
+                result = NULL;
+            }
+            else {
+                result = PyLong_FromSsize_t(index);
+            }
         }
         else {
             assert(0 <= start && start <= end && end <= self->size);
-            res = _PyBytes_Find(
+            if (_safe_PyBytes_Find(&index, self,
                 self->data + start, end - start,
-                view.buf, view.len, start);
+                view.buf, view.len, start) < 0)
+            {
+                result = NULL;
+            }
+            else {
+                result = PyLong_FromSsize_t(index);
+            }
         }
         PyBuffer_Release(&view);
-        return PyLong_FromSsize_t(res);
+        return result;
     }
 }
 
@@ -432,10 +662,16 @@ mmap_write_method(mmap_object *self,
     }
 
     CHECK_VALID_OR_RELEASE(NULL, data);
-    memcpy(&self->data[self->pos], data.buf, data.len);
-    self->pos += data.len;
+    PyObject *result;
+    if (safe_memcpy(self->data + self->pos, data.buf, data.len) < 0) {
+        result = NULL;
+    }
+    else {
+        self->pos += data.len;
+        result = PyLong_FromSsize_t(data.len);
+    }
     PyBuffer_Release(&data);
-    return PyLong_FromSsize_t(data.len);
+    return result;
 }
 
 static PyObject *
@@ -452,14 +688,16 @@ mmap_write_byte_method(mmap_object *self,
         return NULL;
 
     CHECK_VALID(NULL);
-    if (self->pos < self->size) {
-        self->data[self->pos++] = value;
-        Py_RETURN_NONE;
-    }
-    else {
+    if (self->pos >= self->size) {
         PyErr_SetString(PyExc_ValueError, "write byte out of range");
         return NULL;
     }
+
+    if (safe_byte_copy(self->data + self->pos, &value) < 0) {
+        return NULL;
+    }
+    self->pos++;
+    Py_RETURN_NONE;
 }
 
 static PyObject *
@@ -763,8 +1001,9 @@ mmap_move_method(mmap_object *self, PyObject *args)
             goto bounds;
 
         CHECK_VALID(NULL);
-        memmove(&self->data[dest], &self->data[src], cnt);
-
+        if (safe_memmove(self->data + dest, self->data + src, cnt) < 0) {
+            return NULL;
+        };
         Py_RETURN_NONE;
 
       bounds:
@@ -855,6 +1094,29 @@ mmap__sizeof__method(mmap_object *self, void *Py_UNUSED(ignored))
 }
 #endif
 
+#if defined(MS_WINDOWS) && defined(Py_DEBUG)
+static PyObject *
+mmap_protect_method(mmap_object *self, PyObject *args) {
+    DWORD flNewProtect, flOldProtect;
+    Py_ssize_t start, length;
+
+    CHECK_VALID(NULL);
+
+    if (!PyArg_ParseTuple(args, "Inn:protect", &flNewProtect, &start, &length)) {
+        return NULL;
+    }
+
+    if (!VirtualProtect((void *) (self->data + start), length, flNewProtect,
+                        &flOldProtect))
+    {
+        PyErr_SetFromWindowsErr(GetLastError());
+        return NULL;
+    }
+
+    Py_RETURN_NONE;
+}
+#endif
+
 #ifdef HAVE_MADVISE
 static PyObject *
 mmap_madvise_method(mmap_object *self, PyObject *args)
@@ -924,7 +1186,10 @@ static struct PyMethodDef mmap_object_methods[] = {
     {"__exit__",        (PyCFunction) mmap__exit__method,       METH_VARARGS},
 #ifdef MS_WINDOWS
     {"__sizeof__",      (PyCFunction) mmap__sizeof__method,     METH_NOARGS},
-#endif
+#ifdef Py_DEBUG
+    {"_protect",        (PyCFunction) mmap_protect_method,      METH_VARARGS},
+#endif // Py_DEBUG
+#endif // MS_WINDOWS
     {NULL,         NULL}       /* sentinel */
 };
 
@@ -968,7 +1233,12 @@ mmap_item(mmap_object *self, Py_ssize_t i)
         PyErr_SetString(PyExc_IndexError, "mmap index out of range");
         return NULL;
     }
-    return PyBytes_FromStringAndSize(self->data + i, 1);
+
+    char dest;
+    if (safe_byte_copy(&dest, self->data + i) < 0) {
+        return NULL;
+    }
+    return PyBytes_FromStringAndSize(&dest, 1);
 }
 
 static PyObject *
@@ -987,7 +1257,12 @@ mmap_subscript(mmap_object *self, PyObject *item)
             return NULL;
         }
         CHECK_VALID(NULL);
-        return PyLong_FromLong(Py_CHARMASK(self->data[i]));
+
+        char dest;
+        if (safe_byte_copy(&dest, self->data + i) < 0) {
+            return NULL;
+        }
+        return PyLong_FromLong(Py_CHARMASK(dest));
     }
     else if (PySlice_Check(item)) {
         Py_ssize_t start, stop, step, slicelen;
@@ -1001,23 +1276,22 @@ mmap_subscript(mmap_object *self, PyObject *item)
         if (slicelen <= 0)
             return PyBytes_FromStringAndSize("", 0);
         else if (step == 1)
-            return PyBytes_FromStringAndSize(self->data + start,
-                                              slicelen);
+            return _safe_PyBytes_FromStringAndSize(self->data + start, slicelen);
         else {
             char *result_buf = (char *)PyMem_Malloc(slicelen);
-            size_t cur;
-            Py_ssize_t i;
             PyObject *result;
 
             if (result_buf == NULL)
                 return PyErr_NoMemory();
 
-            for (cur = start, i = 0; i < slicelen;
-                 cur += step, i++) {
-                result_buf[i] = self->data[cur];
+            if (safe_copy_to_slice(result_buf, self->data, start, step,
+                                   slicelen) < 0)
+            {
+                result = NULL;
+            }
+            else {
+                result = PyBytes_FromStringAndSize(result_buf, slicelen);
             }
-            result = PyBytes_FromStringAndSize(result_buf,
-                                                slicelen);
             PyMem_Free(result_buf);
             return result;
         }
@@ -1052,7 +1326,10 @@ mmap_ass_item(mmap_object *self, Py_ssize_t i, PyObject *v)
     if (!is_writable(self))
         return -1;
     buf = PyBytes_AsString(v);
-    self->data[i] = buf[0];
+
+    if (safe_byte_copy(self->data + i, buf) < 0) {
+        return -1;
+    }
     return 0;
 }
 
@@ -1097,7 +1374,11 @@ mmap_ass_subscript(mmap_object *self, PyObject *item, PyObject *value)
             return -1;
         }
         CHECK_VALID(-1);
-        self->data[i] = (char) v;
+
+        char v_char = (char) v;
+        if (safe_byte_copy(self->data + i, &v_char) < 0) {
+            return -1;
+        }
         return 0;
     }
     else if (PySlice_Check(item)) {
@@ -1123,24 +1404,23 @@ mmap_ass_subscript(mmap_object *self, PyObject *item, PyObject *value)
         }
 
         CHECK_VALID_OR_RELEASE(-1, vbuf);
+        int result = 0;
         if (slicelen == 0) {
         }
         else if (step == 1) {
-            memcpy(self->data + start, vbuf.buf, slicelen);
+            if (safe_memcpy(self->data + start, vbuf.buf, slicelen) < 0) {
+                result = -1;
+            }
         }
         else {
-            size_t cur;
-            Py_ssize_t i;
-
-            for (cur = start, i = 0;
-                 i < slicelen;
-                 cur += step, i++)
+            if (safe_copy_from_slice(self->data, (char *)vbuf.buf, start, step,
+                                     slicelen) < 0)
             {
-                self->data[cur] = ((char *)vbuf.buf)[i];
+                result = -1;
             }
         }
         PyBuffer_Release(&vbuf);
-        return 0;
+        return result;
     }
     else {
         PyErr_SetString(PyExc_TypeError,
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 9f4be98b35186e..6b2cb96629dc6c 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -16,14 +16,15 @@
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _PyEval_ReInitThreads()
 #include "pycore_fileutils.h"     // _Py_closerange()
-#include "pycore_import.h"        // _PyImport_ReInitLock()
 #include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
+#include "pycore_long.h"          // _PyLong_IsNegative()
 #include "pycore_moduleobject.h"  // _PyModule_GetState()
 #include "pycore_object.h"        // _PyObject_LookupSpecial()
 #include "pycore_pylifecycle.h"   // _PyOS_URandom()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_signal.h"        // Py_NSIG
 #include "pycore_time.h"          // _PyLong_FromTime_t()
+#include "pycore_typeobject.h"    // _PyType_AddMethod()
 
 #ifdef HAVE_UNISTD_H
 #  include <unistd.h>             // symlink()
@@ -72,6 +73,9 @@
 #ifdef HAVE_SYS_TIME_H
 #  include <sys/time.h>           // futimes()
 #endif
+#ifdef HAVE_SYS_PIDFD_H
+#  include <sys/pidfd.h>          // PIDFD_NONBLOCK
+#endif
 
 
 // SGI apparently needs this forward declaration
@@ -125,6 +129,7 @@
 #  define HAVE_PWRITEV_RUNTIME __builtin_available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
 #  define HAVE_MKFIFOAT_RUNTIME __builtin_available(macOS 13.0, iOS 16.0, tvOS 16.0, watchOS 9.0, *)
 #  define HAVE_MKNODAT_RUNTIME __builtin_available(macOS 13.0, iOS 16.0, tvOS 16.0, watchOS 9.0, *)
+#  define HAVE_PTSNAME_R_RUNTIME __builtin_available(macOS 10.13.4, iOS 11.3, tvOS 11.3, watchOS 4.3, *)
 
 #  define HAVE_POSIX_SPAWN_SETSID_RUNTIME __builtin_available(macOS 10.15, *)
 
@@ -206,6 +211,10 @@
 #    define HAVE_MKNODAT_RUNTIME (mknodat != NULL)
 #  endif
 
+#  ifdef HAVE_PTSNAME_R
+#    define HAVE_PTSNAME_R_RUNTIME (ptsname_r != NULL)
+#  endif
+
 #endif
 
 #ifdef HAVE_FUTIMESAT
@@ -231,6 +240,7 @@
 #  define HAVE_PWRITEV_RUNTIME 1
 #  define HAVE_MKFIFOAT_RUNTIME 1
 #  define HAVE_MKNODAT_RUNTIME 1
+#  define HAVE_PTSNAME_R_RUNTIME 1
 #endif
 
 
@@ -626,10 +636,7 @@ PyOS_AfterFork_Parent(void)
     _PyEval_StartTheWorldAll(&_PyRuntime);
 
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (_PyImport_ReleaseLock(interp) <= 0) {
-        Py_FatalError("failed releasing import lock after fork");
-    }
-
+    _PyImport_ReleaseLock(interp);
     run_at_forkers(interp->after_forkers_parent, 0);
 }
 
@@ -674,10 +681,8 @@ PyOS_AfterFork_Child(void)
     _PyEval_StartTheWorldAll(&_PyRuntime);
     _PyThreadState_DeleteList(list);
 
-    status = _PyImport_ReInitLock(tstate->interp);
-    if (_PyStatus_EXCEPTION(status)) {
-        goto fatal_error;
-    }
+    _PyImport_ReInitLock(tstate->interp);
+    _PyImport_ReleaseLock(tstate->interp);
 
     _PySignal_AfterFork();
 
@@ -967,16 +972,46 @@ _Py_Gid_Converter(PyObject *obj, gid_t *p)
 #endif /* MS_WINDOWS */
 
 
-#define _PyLong_FromDev PyLong_FromLongLong
+static PyObject *
+_PyLong_FromDev(dev_t dev)
+{
+#ifdef NODEV
+    if (dev == NODEV) {
+        return PyLong_FromLongLong((long long)dev);
+    }
+#endif
+    return PyLong_FromUnsignedLongLong((unsigned long long)dev);
+}
 
 
 #if (defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV)) || defined(HAVE_DEVICE_MACROS)
 static int
 _Py_Dev_Converter(PyObject *obj, void *p)
 {
-    *((dev_t *)p) = PyLong_AsUnsignedLongLong(obj);
-    if (PyErr_Occurred())
+#ifdef NODEV
+    if (PyLong_Check(obj) && _PyLong_IsNegative((PyLongObject *)obj)) {
+        int overflow;
+        long long result = PyLong_AsLongLongAndOverflow(obj, &overflow);
+        if (result == -1 && PyErr_Occurred()) {
+            return 0;
+        }
+        if (!overflow && result == (long long)NODEV) {
+            *((dev_t *)p) = NODEV;
+            return 1;
+        }
+    }
+#endif
+
+    unsigned long long result = PyLong_AsUnsignedLongLong(obj);
+    if (result == (unsigned long long)-1 && PyErr_Occurred()) {
         return 0;
+    }
+    if ((unsigned long long)(dev_t)result != result) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "Python int too large to convert to C dev_t");
+        return 0;
+    }
+    *((dev_t *)p) = (dev_t)result;
     return 1;
 }
 #endif /* (HAVE_MKNOD && HAVE_MAKEDEV) || HAVE_DEVICE_MACROS */
@@ -1092,16 +1127,15 @@ get_posix_state(PyObject *module)
  *
  * path_converter accepts (Unicode) strings and their
  * subclasses, and bytes and their subclasses.  What
- * it does with the argument depends on the platform:
+ * it does with the argument depends on path.make_wide:
  *
- *   * On Windows, if we get a (Unicode) string we
- *     extract the wchar_t * and return it; if we get
- *     bytes we decode to wchar_t * and return that.
+ *   * If path.make_wide is nonzero, if we get a (Unicode)
+ *     string we extract the wchar_t * and return it; if we
+ *     get bytes we decode to wchar_t * and return that.
  *
- *   * On all other platforms, strings are encoded
- *     to bytes using PyUnicode_FSConverter, then we
- *     extract the char * from the bytes object and
- *     return that.
+ *   * If path.make_wide is zero, if we get bytes we extract
+ *     the char_t * and return it; if we get a (Unicode)
+ *     string we encode to char_t * and return that.
  *
  * path_converter also optionally accepts signed
  * integers (representing open file descriptors) instead
@@ -1110,6 +1144,15 @@ get_posix_state(PyObject *module)
  * Input fields:
  *   path.nullable
  *     If nonzero, the path is permitted to be None.
+ *   path.nonstrict
+ *     If nonzero, the path is permitted to contain
+ *     embedded null characters and have any length.
+ *   path.make_wide
+ *     If nonzero, the converter always uses wide, decoding if necessary, else
+ *     it always uses narrow, encoding if necessary. The default value is
+ *     nonzero on Windows, else zero.
+ *   path.suppress_value_error
+ *     If nonzero, raising ValueError is suppressed.
  *   path.allow_fd
  *     If nonzero, the path is permitted to be a file handle
  *     (a signed int) instead of a string.
@@ -1125,12 +1168,10 @@ get_posix_state(PyObject *module)
  * Output fields:
  *   path.wide
  *     Points to the path if it was expressed as Unicode
- *     and was not encoded.  (Only used on Windows.)
+ *     or if it was bytes and decoded to Unicode.
  *   path.narrow
  *     Points to the path if it was expressed as bytes,
- *     or it was Unicode and was encoded to bytes. (On Windows,
- *     is a non-zero integer if the path was expressed as bytes.
- *     The type is deliberately incompatible to prevent misuse.)
+ *     or if it was Unicode and encoded to bytes.
  *   path.fd
  *     Contains a file descriptor if path.accept_fd was true
  *     and the caller provided a signed integer instead of any
@@ -1140,6 +1181,9 @@ get_posix_state(PyObject *module)
  *     unspecified, path_converter will never get called.
  *     So if you set allow_fd, you *MUST* initialize path.fd = -1
  *     yourself!
+ *   path.value_error
+ *     If nonzero, then suppress_value_error was specified and a ValueError
+ *     occurred.
  *   path.length
  *     The length of the path in characters, if specified as
  *     a string.
@@ -1172,28 +1216,38 @@ get_posix_state(PyObject *module)
  * path_cleanup().  However it is safe to do so.)
  */
 typedef struct {
+    // Input fields
     const char *function_name;
     const char *argument_name;
     int nullable;
+    int nonstrict;
+    int make_wide;
+    int suppress_value_error;
     int allow_fd;
+    // Output fields
     const wchar_t *wide;
-#ifdef MS_WINDOWS
-    BOOL narrow;
-#else
     const char *narrow;
-#endif
     int fd;
+    int value_error;
     Py_ssize_t length;
     PyObject *object;
     PyObject *cleanup;
 } path_t;
 
+#define PATH_T_INITIALIZE(function_name, argument_name, nullable, nonstrict, \
+                          make_wide, suppress_value_error, allow_fd) \
+    {function_name, argument_name, nullable, nonstrict, make_wide, \
+     suppress_value_error, allow_fd, NULL, NULL, -1, 0, 0, NULL, NULL}
 #ifdef MS_WINDOWS
-#define PATH_T_INITIALIZE(function_name, argument_name, nullable, allow_fd) \
-    {function_name, argument_name, nullable, allow_fd, NULL, FALSE, -1, 0, NULL, NULL}
+#define PATH_T_INITIALIZE_P(function_name, argument_name, nullable, \
+                            nonstrict, suppress_value_error, allow_fd) \
+    PATH_T_INITIALIZE(function_name, argument_name, nullable, nonstrict, 1, \
+                      suppress_value_error, allow_fd)
 #else
-#define PATH_T_INITIALIZE(function_name, argument_name, nullable, allow_fd) \
-    {function_name, argument_name, nullable, allow_fd, NULL, NULL, -1, 0, NULL, NULL}
+#define PATH_T_INITIALIZE_P(function_name, argument_name, nullable, \
+                            nonstrict, suppress_value_error, allow_fd) \
+    PATH_T_INITIALIZE(function_name, argument_name, nullable, nonstrict, 0, \
+                      suppress_value_error, allow_fd)
 #endif
 
 static void
@@ -1214,10 +1268,8 @@ path_converter(PyObject *o, void *p)
     Py_ssize_t length = 0;
     int is_index, is_bytes, is_unicode;
     const char *narrow;
-#ifdef MS_WINDOWS
     PyObject *wo = NULL;
     wchar_t *wide = NULL;
-#endif
 
 #define FORMAT_EXCEPTION(exc, fmt) \
     PyErr_Format(exc, "%s%s" fmt, \
@@ -1238,11 +1290,7 @@ path_converter(PyObject *o, void *p)
 
     if ((o == Py_None) && path->nullable) {
         path->wide = NULL;
-#ifdef MS_WINDOWS
-        path->narrow = FALSE;
-#else
         path->narrow = NULL;
-#endif
         path->fd = -1;
         goto success_exit;
     }
@@ -1286,30 +1334,33 @@ path_converter(PyObject *o, void *p)
     }
 
     if (is_unicode) {
+        if (path->make_wide) {
+            wide = PyUnicode_AsWideCharString(o, &length);
+            if (!wide) {
+                goto error_exit;
+            }
 #ifdef MS_WINDOWS
-        wide = PyUnicode_AsWideCharString(o, &length);
-        if (!wide) {
-            goto error_exit;
-        }
-        if (length > 32767) {
-            FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
-            goto error_exit;
-        }
-        if (wcslen(wide) != length) {
-            FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
-            goto error_exit;
-        }
+            if (!path->nonstrict && length > 32767) {
+                FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
+                goto error_exit;
+            }
+#endif
+            if (!path->nonstrict && wcslen(wide) != (size_t)length) {
+                FORMAT_EXCEPTION(PyExc_ValueError,
+                                 "embedded null character in %s");
+                goto error_exit;
+            }
 
-        path->wide = wide;
-        path->narrow = FALSE;
-        path->fd = -1;
-        wide = NULL;
-        goto success_exit;
-#else
-        if (!PyUnicode_FSConverter(o, &bytes)) {
+            path->wide = wide;
+            path->narrow = NULL;
+            path->fd = -1;
+            wide = NULL;
+            goto success_exit;
+        }
+        bytes = PyUnicode_EncodeFSDefault(o);
+        if (!bytes) {
             goto error_exit;
         }
-#endif
     }
     else if (is_bytes) {
         bytes = Py_NewRef(o);
@@ -1319,11 +1370,7 @@ path_converter(PyObject *o, void *p)
             goto error_exit;
         }
         path->wide = NULL;
-#ifdef MS_WINDOWS
-        path->narrow = FALSE;
-#else
         path->narrow = NULL;
-#endif
         goto success_exit;
     }
     else {
@@ -1343,52 +1390,54 @@ path_converter(PyObject *o, void *p)
 
     length = PyBytes_GET_SIZE(bytes);
     narrow = PyBytes_AS_STRING(bytes);
-    if ((size_t)length != strlen(narrow)) {
+    if (!path->nonstrict && strlen(narrow) != (size_t)length) {
         FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
         goto error_exit;
     }
 
-#ifdef MS_WINDOWS
-    wo = PyUnicode_DecodeFSDefaultAndSize(
-        narrow,
-        length
-    );
-    if (!wo) {
-        goto error_exit;
-    }
+    if (path->make_wide) {
+        wo = PyUnicode_DecodeFSDefaultAndSize(narrow, length);
+        if (!wo) {
+            goto error_exit;
+        }
 
-    wide = PyUnicode_AsWideCharString(wo, &length);
-    Py_DECREF(wo);
-    if (!wide) {
-        goto error_exit;
-    }
-    if (length > 32767) {
-        FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
-        goto error_exit;
-    }
-    if (wcslen(wide) != length) {
-        FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
-        goto error_exit;
-    }
-    path->wide = wide;
-    path->narrow = TRUE;
-    Py_DECREF(bytes);
-    wide = NULL;
-#else
-    path->wide = NULL;
-    path->narrow = narrow;
-    if (bytes == o) {
-        /* Still a reference owned by path->object, don't have to
-           worry about path->narrow is used after free. */
+        wide = PyUnicode_AsWideCharString(wo, &length);
+        Py_DECREF(wo);
+        if (!wide) {
+            goto error_exit;
+        }
+#ifdef MS_WINDOWS
+        if (!path->nonstrict && length > 32767) {
+            FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
+            goto error_exit;
+        }
+#endif
+        if (!path->nonstrict && wcslen(wide) != (size_t)length) {
+            FORMAT_EXCEPTION(PyExc_ValueError,
+                             "embedded null character in %s");
+            goto error_exit;
+        }
+        path->wide = wide;
+        path->narrow = NULL;
         Py_DECREF(bytes);
+        wide = NULL;
     }
     else {
-        path->cleanup = bytes;
+        path->wide = NULL;
+        path->narrow = narrow;
+        if (bytes == o) {
+            /* Still a reference owned by path->object, don't have to
+            worry about path->narrow is used after free. */
+            Py_DECREF(bytes);
+        }
+        else {
+            path->cleanup = bytes;
+        }
     }
-#endif
     path->fd = -1;
 
  success_exit:
+    path->value_error = 0;
     path->length = length;
     path->object = o;
     return Py_CLEANUP_SUPPORTED;
@@ -1396,10 +1445,20 @@ path_converter(PyObject *o, void *p)
  error_exit:
     Py_XDECREF(o);
     Py_XDECREF(bytes);
-#ifdef MS_WINDOWS
     PyMem_Free(wide);
-#endif
-    return 0;
+    if (!path->suppress_value_error ||
+        !PyErr_ExceptionMatches(PyExc_ValueError))
+    {
+        return 0;
+    }
+    PyErr_Clear();
+    path->wide = NULL;
+    path->narrow = NULL;
+    path->fd = -1;
+    path->value_error = 1;
+    path->length = 0;
+    path->object = NULL;
+    return Py_CLEANUP_SUPPORTED;
 }
 
 static void
@@ -1449,11 +1508,7 @@ follow_symlinks_specified(const char *function_name, int follow_symlinks)
 static int
 path_and_dir_fd_invalid(const char *function_name, path_t *path, int dir_fd)
 {
-    if (!path->wide && (dir_fd != DEFAULT_DIR_FD)
-#ifndef MS_WINDOWS
-        && !path->narrow
-#endif
-    ) {
+    if (!path->wide && (dir_fd != DEFAULT_DIR_FD) && !path->narrow) {
         PyErr_Format(PyExc_ValueError,
                      "%s: can't specify dir_fd without matching path",
                      function_name);
@@ -2913,7 +2968,9 @@ class path_t_converter(CConverter):
 
     converter = 'path_converter'
 
-    def converter_init(self, *, allow_fd=False, nullable=False):
+    def converter_init(self, *, allow_fd=False, make_wide=None,
+                       nonstrict=False, nullable=False,
+                       suppress_value_error=False):
         # right now path_t doesn't support default values.
         # to support a default value, you'll need to override initialize().
         if self.default not in (unspecified, None):
@@ -2923,6 +2980,9 @@ class path_t_converter(CConverter):
             raise RuntimeError("Can't specify a c_default to the path_t converter!")
 
         self.nullable = nullable
+        self.nonstrict = nonstrict
+        self.make_wide = make_wide
+        self.suppress_value_error = suppress_value_error
         self.allow_fd = allow_fd
 
     def pre_render(self):
@@ -2932,11 +2992,24 @@ class path_t_converter(CConverter):
             return str(int(bool(value)))
 
         # add self.py_name here when merging with posixmodule conversion
-        self.c_default = 'PATH_T_INITIALIZE("{}", "{}", {}, {})'.format(
-            self.function.name,
-            self.name,
-            strify(self.nullable),
-            strify(self.allow_fd),
+        if self.make_wide is None:
+            self.c_default = 'PATH_T_INITIALIZE_P("{}", "{}", {}, {}, {}, {})'.format(
+                self.function.name,
+                self.name,
+                strify(self.nullable),
+                strify(self.nonstrict),
+                strify(self.suppress_value_error),
+                strify(self.allow_fd),
+            )
+        else:
+            self.c_default = 'PATH_T_INITIALIZE("{}", "{}", {}, {}, {}, {}, {})'.format(
+                self.function.name,
+                self.name,
+                strify(self.nullable),
+                strify(self.nonstrict),
+                strify(self.make_wide),
+                strify(self.suppress_value_error),
+                strify(self.allow_fd),
             )
 
     def cleanup(self):
@@ -3016,7 +3089,7 @@ class sysconf_confname_converter(path_confname_converter):
     converter="conv_sysconf_confname"
 
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=3338733161aa7879]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=577cb476e5d64960]*/
 
 /*[clinic input]
 
@@ -3225,7 +3298,7 @@ os_access_impl(PyObject *module, path_t *path, int mode, int dir_fd,
 #endif
 
 
-#ifdef HAVE_TTYNAME
+#ifdef HAVE_TTYNAME_R
 /*[clinic input]
 os.ttyname
 
@@ -4285,7 +4358,7 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
 {
     PyObject *v;
     HANDLE hFindFile = INVALID_HANDLE_VALUE;
-    BOOL result;
+    BOOL result, return_bytes;
     wchar_t namebuf[MAX_PATH+4]; /* Overallocate for "\*.*" */
     /* only claim to have space for MAX_PATH */
     Py_ssize_t len = Py_ARRAY_LENGTH(namebuf)-4;
@@ -4297,9 +4370,11 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
     if (!path->wide) { /* Default arg: "." */
         po_wchars = L".";
         len = 1;
+        return_bytes = 0;
     } else {
         po_wchars = path->wide;
         len = wcslen(path->wide);
+        return_bytes = PyBytes_Check(path->object);
     }
     /* The +5 is so we can append "\\*.*\0" */
     wnamebuf = PyMem_New(wchar_t, len + 5);
@@ -4334,7 +4409,7 @@ _listdir_windows_no_opendir(path_t *path, PyObject *list)
             wcscmp(wFileData.cFileName, L"..") != 0) {
             v = PyUnicode_FromWideChar(wFileData.cFileName,
                                        wcslen(wFileData.cFileName));
-            if (path->narrow && v) {
+            if (return_bytes && v) {
                 Py_SETREF(v, PyUnicode_EncodeFSDefault(v));
             }
             if (v == NULL) {
@@ -4877,7 +4952,7 @@ os__getfullpathname_impl(PyObject *module, path_t *path)
     if (str == NULL) {
         return NULL;
     }
-    if (path->narrow) {
+    if (PyBytes_Check(path->object)) {
         Py_SETREF(str, PyUnicode_EncodeFSDefault(str));
     }
     return str;
@@ -4950,7 +5025,7 @@ os__getfinalpathname_impl(PyObject *module, path_t *path)
     }
 
     result = PyUnicode_FromWideChar(target_path, result_length);
-    if (result && path->narrow) {
+    if (result && PyBytes_Check(path->object)) {
         Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
     }
 
@@ -5033,7 +5108,7 @@ os__getvolumepathname_impl(PyObject *module, path_t *path)
         goto exit;
     }
     result = PyUnicode_FromWideChar(mountpath, wcslen(mountpath));
-    if (path->narrow)
+    if (PyBytes_Check(path->object))
         Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
 
 exit:
@@ -5088,407 +5163,365 @@ os__path_splitroot_impl(PyObject *module, path_t *path)
 }
 
 
-/*[clinic input]
-os._path_isdir
-
-    s: 'O'
+#define PY_IFREG  1 // Regular file
+#define PY_IFDIR  2 // Directory
+#define PY_IFLNK  4 // Symlink
+#define PY_IFMNT  8 // Mount Point (junction)
+#define PY_IFLRP 16 // Link Reparse Point (name-surrogate, symlink, junction)
+#define PY_IFRRP 32 // Regular Reparse Point
 
-Return true if the pathname refers to an existing directory.
+static inline BOOL
+_testInfo(DWORD attributes, DWORD reparseTag, BOOL diskDevice, int testedType)
+{
+    switch (testedType) {
+    case PY_IFREG:
+        return diskDevice && attributes &&
+               !(attributes & FILE_ATTRIBUTE_DIRECTORY);
+    case PY_IFDIR:
+        return attributes & FILE_ATTRIBUTE_DIRECTORY;
+    case PY_IFLNK:
+        return (attributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+               reparseTag == IO_REPARSE_TAG_SYMLINK;
+    case PY_IFMNT:
+        return (attributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+               reparseTag == IO_REPARSE_TAG_MOUNT_POINT;
+    case PY_IFLRP:
+        return (attributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+               IsReparseTagNameSurrogate(reparseTag);
+    case PY_IFRRP:
+        return (attributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+               reparseTag && !IsReparseTagNameSurrogate(reparseTag);
+    }
 
-[clinic start generated code]*/
+    return FALSE;
+}
 
-static PyObject *
-os__path_isdir_impl(PyObject *module, PyObject *s)
-/*[clinic end generated code: output=9d87ab3c8b8a4e61 input=c17f7ef21d22d64e]*/
+static BOOL
+_testFileTypeByHandle(HANDLE hfile, int testedType, BOOL diskOnly)
 {
-    HANDLE hfile;
-    BOOL close_file = TRUE;
+    assert(testedType == PY_IFREG || testedType == PY_IFDIR ||
+           testedType == PY_IFLNK || testedType == PY_IFMNT ||
+           testedType == PY_IFLRP || testedType == PY_IFRRP);
+
+    BOOL diskDevice = GetFileType(hfile) == FILE_TYPE_DISK;
+    if (diskOnly && !diskDevice) {
+        return FALSE;
+    }
+    if (testedType != PY_IFREG && testedType != PY_IFDIR) {
+        FILE_ATTRIBUTE_TAG_INFO info;
+        return GetFileInformationByHandleEx(hfile, FileAttributeTagInfo, &info,
+                                            sizeof(info)) &&
+               _testInfo(info.FileAttributes, info.ReparseTag, diskDevice,
+                         testedType);
+    }
     FILE_BASIC_INFO info;
-    path_t _path = PATH_T_INITIALIZE("isdir", "s", 0, 1);
-    int result;
-    BOOL slow_path = TRUE;
-    FILE_STAT_BASIC_INFORMATION statInfo;
+    return GetFileInformationByHandleEx(hfile, FileBasicInfo, &info,
+                                        sizeof(info)) &&
+           _testInfo(info.FileAttributes, 0, diskDevice, testedType);
+}
 
-    if (!path_converter(s, &_path)) {
-        path_cleanup(&_path);
-        if (PyErr_ExceptionMatches(PyExc_ValueError)) {
-            PyErr_Clear();
-            Py_RETURN_FALSE;
+static BOOL
+_testFileTypeByName(LPCWSTR path, int testedType)
+{
+    assert(testedType == PY_IFREG || testedType == PY_IFDIR ||
+           testedType == PY_IFLNK || testedType == PY_IFMNT ||
+           testedType == PY_IFLRP || testedType == PY_IFRRP);
+
+    FILE_STAT_BASIC_INFORMATION info;
+    if (_Py_GetFileInformationByName(path, FileStatBasicByNameInfo, &info,
+                                     sizeof(info)))
+    {
+        BOOL diskDevice = info.DeviceType == FILE_DEVICE_DISK ||
+                          info.DeviceType == FILE_DEVICE_VIRTUAL_DISK ||
+                          info.DeviceType == FILE_DEVICE_CD_ROM;
+        BOOL result = _testInfo(info.FileAttributes, info.ReparseTag,
+                                diskDevice, testedType);
+        if (!result || (testedType != PY_IFREG && testedType != PY_IFDIR) ||
+            !(info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
+        {
+            return result;
         }
-        return NULL;
+    }
+    else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(
+                GetLastError()))
+    {
+        return FALSE;
     }
 
-    Py_BEGIN_ALLOW_THREADS
-    if (_path.wide) {
-        if (_Py_GetFileInformationByName(_path.wide, FileStatBasicByNameInfo,
-                                         &statInfo, sizeof(statInfo))) {
-            if (!(statInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
-                slow_path = FALSE;
-                result = statInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY;
-            } else if (!(statInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
-                slow_path = FALSE;
-                result = 0;
-            }
-        } else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(GetLastError())) {
-                    slow_path = FALSE;
-                    result = 0;
-        }
+    DWORD flags = FILE_FLAG_BACKUP_SEMANTICS;
+    if (testedType != PY_IFREG && testedType != PY_IFDIR) {
+        flags |= FILE_FLAG_OPEN_REPARSE_POINT;
     }
-    if (slow_path) {
-        if (_path.fd != -1) {
-            hfile = _Py_get_osfhandle_noraise(_path.fd);
-            close_file = FALSE;
+    HANDLE hfile = CreateFileW(path, FILE_READ_ATTRIBUTES, 0, NULL,
+                               OPEN_EXISTING, flags, NULL);
+    if (hfile != INVALID_HANDLE_VALUE) {
+        BOOL result = _testFileTypeByHandle(hfile, testedType, FALSE);
+        CloseHandle(hfile);
+        return result;
+    }
+
+    switch (GetLastError()) {
+    case ERROR_ACCESS_DENIED:
+    case ERROR_SHARING_VIOLATION:
+    case ERROR_CANT_ACCESS_FILE:
+    case ERROR_INVALID_PARAMETER:
+        int rc;
+        STRUCT_STAT st;
+        if (testedType == PY_IFREG || testedType == PY_IFDIR) {
+            rc = STAT(path, &st);
         }
         else {
-            hfile = CreateFileW(_path.wide, FILE_READ_ATTRIBUTES, 0, NULL,
-                                OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+            // PY_IFRRP is not generally supported in this case, except for
+            // unhandled reparse points such as IO_REPARSE_TAG_APPEXECLINK.
+            rc = LSTAT(path, &st);
         }
-        if (hfile != INVALID_HANDLE_VALUE) {
-            if (GetFileInformationByHandleEx(hfile, FileBasicInfo, &info,
-                                            sizeof(info)))
-            {
-                result = info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY;
-            }
-            else {
-                result = 0;
-            }
-            if (close_file) {
-                CloseHandle(hfile);
-            }
-        }
-        else {
-            STRUCT_STAT st;
-            switch (GetLastError()) {
-            case ERROR_ACCESS_DENIED:
-            case ERROR_SHARING_VIOLATION:
-            case ERROR_CANT_ACCESS_FILE:
-            case ERROR_INVALID_PARAMETER:
-                if (STAT(_path.wide, &st)) {
-                    result = 0;
-                }
-                else {
-                    result = S_ISDIR(st.st_mode);
-                }
-                break;
-            default:
-                result = 0;
-            }
+        if (!rc) {
+            return _testInfo(st.st_file_attributes, st.st_reparse_tag,
+                             st.st_mode & S_IFREG, testedType);
         }
     }
-    Py_END_ALLOW_THREADS
 
-    path_cleanup(&_path);
-    if (result) {
-        Py_RETURN_TRUE;
-    }
-    Py_RETURN_FALSE;
+    return FALSE;
 }
 
 
-/*[clinic input]
-os._path_isfile
+static BOOL
+_testFileExistsByName(LPCWSTR path, BOOL followLinks)
+{
+    FILE_STAT_BASIC_INFORMATION info;
+    if (_Py_GetFileInformationByName(path, FileStatBasicByNameInfo, &info,
+                                     sizeof(info)))
+    {
+        if (!(info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) ||
+            !followLinks && IsReparseTagNameSurrogate(info.ReparseTag))
+        {
+            return TRUE;
+        }
+    }
+    else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(
+                    GetLastError()))
+    {
+        return FALSE;
+    }
 
-    path: 'O'
+    DWORD flags = FILE_FLAG_BACKUP_SEMANTICS;
+    if (!followLinks) {
+        flags |= FILE_FLAG_OPEN_REPARSE_POINT;
+    }
+    HANDLE hfile = CreateFileW(path, FILE_READ_ATTRIBUTES, 0, NULL,
+                               OPEN_EXISTING, flags, NULL);
+    if (hfile != INVALID_HANDLE_VALUE) {
+        if (followLinks) {
+            CloseHandle(hfile);
+            return TRUE;
+        }
+        // Regular Reparse Points (PY_IFRRP) have to be traversed.
+        BOOL result = _testFileTypeByHandle(hfile, PY_IFRRP, FALSE);
+        CloseHandle(hfile);
+        if (!result) {
+            return TRUE;
+        }
+        hfile = CreateFileW(path, FILE_READ_ATTRIBUTES, 0, NULL, OPEN_EXISTING,
+                            FILE_FLAG_BACKUP_SEMANTICS, NULL);
+        if (hfile != INVALID_HANDLE_VALUE) {
+            CloseHandle(hfile);
+            return TRUE;
+        }
+    }
 
-Test whether a path is a regular file
+    switch (GetLastError()) {
+    case ERROR_ACCESS_DENIED:
+    case ERROR_SHARING_VIOLATION:
+    case ERROR_CANT_ACCESS_FILE:
+    case ERROR_INVALID_PARAMETER:
+        STRUCT_STAT _st;
+        return followLinks ? !STAT(path, &_st): !LSTAT(path, &_st);
+    }
 
-[clinic start generated code]*/
+    return FALSE;
+}
 
-static PyObject *
-os__path_isfile_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=2394ed7c4b5cfd85 input=de22d74960ade365]*/
-{
-    HANDLE hfile;
-    BOOL close_file = TRUE;
-    FILE_BASIC_INFO info;
-    path_t _path = PATH_T_INITIALIZE("isfile", "path", 0, 1);
-    int result;
-    BOOL slow_path = TRUE;
-    FILE_STAT_BASIC_INFORMATION statInfo;
 
-    if (!path_converter(path, &_path)) {
-        path_cleanup(&_path);
-        if (PyErr_ExceptionMatches(PyExc_ValueError)) {
-            PyErr_Clear();
-            Py_RETURN_FALSE;
-        }
-        return NULL;
+static BOOL
+_testFileExists(path_t *path, BOOL followLinks)
+{
+    BOOL result = FALSE;
+    if (path->value_error) {
+        return FALSE;
     }
 
     Py_BEGIN_ALLOW_THREADS
-    if (_path.wide) {
-        if (_Py_GetFileInformationByName(_path.wide, FileStatBasicByNameInfo,
-                                         &statInfo, sizeof(statInfo))) {
-            if (!(statInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
-                slow_path = FALSE;
-                result = !(statInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY);
-            } else if (statInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
-                slow_path = FALSE;
-                result = 0;
+    if (path->fd != -1) {
+        HANDLE hfile = _Py_get_osfhandle_noraise(path->fd);
+        if (hfile != INVALID_HANDLE_VALUE) {
+            if (GetFileType(hfile) != FILE_TYPE_UNKNOWN || !GetLastError()) {
+                result = TRUE;
             }
-        } else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(GetLastError())) {
-                    slow_path = FALSE;
-                    result = 0;
         }
     }
-    if (slow_path) {
-        if (_path.fd != -1) {
-            hfile = _Py_get_osfhandle_noraise(_path.fd);
-            close_file = FALSE;
-        }
-        else {
-            hfile = CreateFileW(_path.wide, FILE_READ_ATTRIBUTES, 0, NULL,
-                                OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
-        }
+    else if (path->wide) {
+        result = _testFileExistsByName(path->wide, followLinks);
+    }
+    Py_END_ALLOW_THREADS
+
+    return result;
+}
+
+
+static BOOL
+_testFileType(path_t *path, int testedType)
+{
+    BOOL result = FALSE;
+    if (path->value_error) {
+        return FALSE;
+    }
+
+    Py_BEGIN_ALLOW_THREADS
+    if (path->fd != -1) {
+        HANDLE hfile = _Py_get_osfhandle_noraise(path->fd);
         if (hfile != INVALID_HANDLE_VALUE) {
-            if (GetFileInformationByHandleEx(hfile, FileBasicInfo, &info,
-                                            sizeof(info)))
-            {
-                result = !(info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY);
-            }
-            else {
-                result = 0;
-            }
-            if (close_file) {
-                CloseHandle(hfile);
-            }
-        }
-        else {
-            STRUCT_STAT st;
-            switch (GetLastError()) {
-            case ERROR_ACCESS_DENIED:
-            case ERROR_SHARING_VIOLATION:
-            case ERROR_CANT_ACCESS_FILE:
-            case ERROR_INVALID_PARAMETER:
-                if (STAT(_path.wide, &st)) {
-                    result = 0;
-                }
-                else {
-                    result = S_ISREG(st.st_mode);
-                }
-                break;
-            default:
-                result = 0;
-            }
+            result = _testFileTypeByHandle(hfile, testedType, TRUE);
         }
     }
+    else if (path->wide) {
+        result = _testFileTypeByName(path->wide, testedType);
+    }
     Py_END_ALLOW_THREADS
 
-    path_cleanup(&_path);
-    if (result) {
-        Py_RETURN_TRUE;
-    }
-    Py_RETURN_FALSE;
+    return result;
 }
 
 
 /*[clinic input]
-os._path_exists
+os._path_exists -> bool
 
-    path: 'O'
+    path: path_t(allow_fd=True, suppress_value_error=True)
 
-Test whether a path exists.  Returns False for broken symbolic links
+Test whether a path exists.  Returns False for broken symbolic links.
 
 [clinic start generated code]*/
 
-static PyObject *
-os__path_exists_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=f508c3b35e13a249 input=380f77cdfa0f7ae8]*/
+static int
+os__path_exists_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=8da13acf666e16ba input=142beabfc66783eb]*/
 {
-    HANDLE hfile;
-    BOOL close_file = TRUE;
-    path_t _path = PATH_T_INITIALIZE("exists", "path", 0, 1);
-    int result;
-    BOOL slow_path = TRUE;
-    FILE_STAT_BASIC_INFORMATION statInfo;
+    return _testFileExists(path, TRUE);
+}
 
-    if (!path_converter(path, &_path)) {
-        path_cleanup(&_path);
-        if (PyErr_ExceptionMatches(PyExc_ValueError)) {
-            PyErr_Clear();
-            Py_RETURN_FALSE;
-        }
-        return NULL;
-    }
 
-    Py_BEGIN_ALLOW_THREADS
-    if (_path.wide) {
-        if (_Py_GetFileInformationByName(_path.wide, FileStatBasicByNameInfo,
-                                         &statInfo, sizeof(statInfo))) {
-            if (!(statInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
-                slow_path = FALSE;
-                result = 1;
-            }
-        } else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(GetLastError())) {
-                    slow_path = FALSE;
-                    result = 0;
-        }
-    }
-    if (slow_path) {
-        if (_path.fd != -1) {
-            hfile = _Py_get_osfhandle_noraise(_path.fd);
-            close_file = FALSE;
-        }
-        else {
-            hfile = CreateFileW(_path.wide, FILE_READ_ATTRIBUTES, 0, NULL,
-                                OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
-        }
-        if (hfile != INVALID_HANDLE_VALUE) {
-            result = 1;
-            if (close_file) {
-                CloseHandle(hfile);
-            }
-        }
-        else {
-            STRUCT_STAT st;
-            switch (GetLastError()) {
-            case ERROR_ACCESS_DENIED:
-            case ERROR_SHARING_VIOLATION:
-            case ERROR_CANT_ACCESS_FILE:
-            case ERROR_INVALID_PARAMETER:
-                if (STAT(_path.wide, &st)) {
-                    result = 0;
-                }
-                else {
-                    result = 1;
-                }
-                break;
-            default:
-                result = 0;
-            }
-        }
-    }
-    Py_END_ALLOW_THREADS
+/*[clinic input]
+os._path_lexists -> bool
 
-    path_cleanup(&_path);
-    if (result) {
-        Py_RETURN_TRUE;
-    }
-    Py_RETURN_FALSE;
+    path: path_t(allow_fd=True, suppress_value_error=True)
+
+Test whether a path exists.  Returns True for broken symbolic links.
+
+[clinic start generated code]*/
+
+static int
+os__path_lexists_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=e7240ed5fc45bff3 input=208205112a3cc1ed]*/
+{
+    return _testFileExists(path, FALSE);
+}
+
+
+/*[clinic input]
+os._path_isdir -> bool
+
+    s as path: path_t(allow_fd=True, suppress_value_error=True)
+
+Return true if the pathname refers to an existing directory.
+
+[clinic start generated code]*/
+
+static int
+os__path_isdir_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=d5786196f9e2fa7a input=132a3b5301aecf79]*/
+{
+    return _testFileType(path, PY_IFDIR);
+}
+
+
+/*[clinic input]
+os._path_isfile -> bool
+
+    path: path_t(allow_fd=True, suppress_value_error=True)
+
+Test whether a path is a regular file
+
+[clinic start generated code]*/
+
+static int
+os__path_isfile_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=5c3073bc212b9863 input=4ac1fd350b30a39e]*/
+{
+    return _testFileType(path, PY_IFREG);
 }
 
 
 /*[clinic input]
-os._path_islink
+os._path_islink -> bool
 
-    path: 'O'
+    path: path_t(allow_fd=True, suppress_value_error=True)
 
 Test whether a path is a symbolic link
 
 [clinic start generated code]*/
 
-static PyObject *
-os__path_islink_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=6d8640b1a390c054 input=38a3cb937ccf59bf]*/
+static int
+os__path_islink_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=30da7bda8296adcc input=7510ce05b547debb]*/
 {
-    HANDLE hfile;
-    BOOL close_file = TRUE;
-    FILE_ATTRIBUTE_TAG_INFO info;
-    path_t _path = PATH_T_INITIALIZE("islink", "path", 0, 1);
-    int result;
-    BOOL slow_path = TRUE;
-    FILE_STAT_BASIC_INFORMATION statInfo;
+    return _testFileType(path, PY_IFLNK);
+}
 
-    if (!path_converter(path, &_path)) {
-        path_cleanup(&_path);
-        if (PyErr_ExceptionMatches(PyExc_ValueError)) {
-            PyErr_Clear();
-            Py_RETURN_FALSE;
-        }
-        return NULL;
-    }
 
-    Py_BEGIN_ALLOW_THREADS
-    if (_path.wide) {
-        if (_Py_GetFileInformationByName(_path.wide, FileStatBasicByNameInfo,
-                                         &statInfo, sizeof(statInfo))) {
-            slow_path = FALSE;
-            if (statInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
-                result = (statInfo.ReparseTag == IO_REPARSE_TAG_SYMLINK);
-            }
-            else {
-                result = 0;
-            }
-        } else if (_Py_GetFileInformationByName_ErrorIsTrustworthy(GetLastError())) {
-                    slow_path = FALSE;
-                    result = 0;
-        }
-    }
-    if (slow_path) {
-        if (_path.fd != -1) {
-            hfile = _Py_get_osfhandle_noraise(_path.fd);
-            close_file = FALSE;
-        }
-        else {
-            hfile = CreateFileW(_path.wide, FILE_READ_ATTRIBUTES, 0, NULL,
-                                OPEN_EXISTING,
-                                FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS,
-                                NULL);
-        }
-        if (hfile != INVALID_HANDLE_VALUE) {
-            if (GetFileInformationByHandleEx(hfile, FileAttributeTagInfo, &info,
-                                            sizeof(info)))
-            {
-                result = (info.ReparseTag == IO_REPARSE_TAG_SYMLINK);
-            }
-            else {
-                result = 0;
-            }
-            if (close_file) {
-                CloseHandle(hfile);
-            }
-        }
-        else {
-            STRUCT_STAT st;
-            switch (GetLastError()) {
-            case ERROR_ACCESS_DENIED:
-            case ERROR_SHARING_VIOLATION:
-            case ERROR_CANT_ACCESS_FILE:
-            case ERROR_INVALID_PARAMETER:
-                if (LSTAT(_path.wide, &st)) {
-                    result = 0;
-                }
-                else {
-                    result = S_ISLNK(st.st_mode);
-                }
-                break;
-            default:
-                result = 0;
-            }
-        }
-    }
-    Py_END_ALLOW_THREADS
+/*[clinic input]
+os._path_isjunction -> bool
 
-    path_cleanup(&_path);
-    if (result) {
-        Py_RETURN_TRUE;
-    }
-    Py_RETURN_FALSE;
+    path: path_t(allow_fd=True, suppress_value_error=True)
+
+Test whether a path is a junction
+
+[clinic start generated code]*/
+
+static int
+os__path_isjunction_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=e1d17a9dd18a9945 input=7dcb8bc4e972fcaf]*/
+{
+    return _testFileType(path, PY_IFMNT);
 }
 
+#undef PY_IFREG
+#undef PY_IFDIR
+#undef PY_IFLNK
+#undef PY_IFMNT
+#undef PY_IFLRP
+#undef PY_IFRRP
+
 #endif /* MS_WINDOWS */
 
 
 /*[clinic input]
 os._path_splitroot_ex
 
-    path: unicode
+    p as path: path_t(make_wide=True, nonstrict=True)
 
+Split a pathname into drive, root and tail.
+
+The tail contains anything after the root.
 [clinic start generated code]*/
 
 static PyObject *
-os__path_splitroot_ex_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=de97403d3dfebc40 input=f1470e12d899f9ac]*/
+os__path_splitroot_ex_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=4b0072b6cdf4b611 input=4556b615c7cc13f2]*/
 {
-    Py_ssize_t len, drvsize, rootsize;
+    Py_ssize_t drvsize, rootsize;
     PyObject *drv = NULL, *root = NULL, *tail = NULL, *result = NULL;
 
-    wchar_t *buffer = PyUnicode_AsWideCharString(path, &len);
-    if (!buffer) {
-        goto exit;
-    }
-
-    _Py_skiproot(buffer, len, &drvsize, &rootsize);
+    const wchar_t *buffer = path->wide;
+    _Py_skiproot(buffer, path->length, &drvsize, &rootsize);
     drv = PyUnicode_FromWideChar(buffer, drvsize);
     if (drv == NULL) {
         goto exit;
@@ -5498,13 +5531,26 @@ os__path_splitroot_ex_impl(PyObject *module, PyObject *path)
         goto exit;
     }
     tail = PyUnicode_FromWideChar(&buffer[drvsize + rootsize],
-                                  len - drvsize - rootsize);
+                                  path->length - drvsize - rootsize);
     if (tail == NULL) {
         goto exit;
     }
+    if (PyBytes_Check(path->object)) {
+        Py_SETREF(drv, PyUnicode_EncodeFSDefault(drv));
+        if (drv == NULL) {
+            goto exit;
+        }
+        Py_SETREF(root, PyUnicode_EncodeFSDefault(root));
+        if (root == NULL) {
+            goto exit;
+        }
+        Py_SETREF(tail, PyUnicode_EncodeFSDefault(tail));
+        if (tail == NULL) {
+            goto exit;
+        }
+    }
     result = PyTuple_Pack(3, drv, root, tail);
 exit:
-    PyMem_Free(buffer);
     Py_XDECREF(drv);
     Py_XDECREF(root);
     Py_XDECREF(tail);
@@ -5515,172 +5561,31 @@ os__path_splitroot_ex_impl(PyObject *module, PyObject *path)
 /*[clinic input]
 os._path_normpath
 
-    path: object
+    path: path_t(make_wide=True, nonstrict=True)
 
-Basic path normalization.
+Normalize path, eliminating double slashes, etc.
 [clinic start generated code]*/
 
 static PyObject *
-os__path_normpath_impl(PyObject *module, PyObject *path)
-/*[clinic end generated code: output=b94d696d828019da input=5e90c39e12549dc0]*/
+os__path_normpath_impl(PyObject *module, path_t *path)
+/*[clinic end generated code: output=d353e7ed9410c044 input=3d4ac23b06332dcb]*/
 {
-    if (!PyUnicode_Check(path)) {
-        PyErr_Format(PyExc_TypeError, "expected 'str', not '%.200s'",
-            Py_TYPE(path)->tp_name);
-        return NULL;
-    }
-    Py_ssize_t len;
-    wchar_t *buffer = PyUnicode_AsWideCharString(path, &len);
-    if (!buffer) {
-        return NULL;
-    }
+    PyObject *result;
     Py_ssize_t norm_len;
-    wchar_t *norm_path = _Py_normpath_and_size(buffer, len, &norm_len);
-    PyObject *result = PyUnicode_FromWideChar(norm_path, norm_len);
-    PyMem_Free(buffer);
-    return result;
-}
-
-#ifdef MS_WINDOWS
-
-/* We centralise SECURITY_ATTRIBUTE initialization based around
-templates that will probably mostly match common POSIX mode settings.
-The _Py_SECURITY_ATTRIBUTE_DATA structure contains temporary data, as
-a constructed SECURITY_ATTRIBUTE structure typically refers to memory
-that has to be alive while it's being used.
-
-Typical use will look like:
-    SECURITY_ATTRIBUTES *pSecAttr = NULL;
-    struct _Py_SECURITY_ATTRIBUTE_DATA secAttrData;
-    int error, error2;
-
-    Py_BEGIN_ALLOW_THREADS
-    switch (mode) {
-    case 0x1C0: // 0o700
-        error = initializeMkdir700SecurityAttributes(&pSecAttr, &secAttrData);
-        break;
-    ...
-    default:
-        error = initializeDefaultSecurityAttributes(&pSecAttr, &secAttrData);
-        break;
-    }
-
-    if (!error) {
-        // do operation, passing pSecAttr
+    wchar_t *norm_path = _Py_normpath_and_size((wchar_t *)path->wide,
+                                               path->length, &norm_len);
+    if (!norm_len) {
+        result = PyUnicode_FromOrdinal('.');
     }
-
-    // Unconditionally clear secAttrData.
-    error2 = clearSecurityAttributes(&pSecAttr, &secAttrData);
-    if (!error) {
-        error = error2;
-    }
-    Py_END_ALLOW_THREADS
-
-    if (error) {
-        PyErr_SetFromWindowsErr(error);
-        return NULL;
-    }
-*/
-
-struct _Py_SECURITY_ATTRIBUTE_DATA {
-    SECURITY_ATTRIBUTES securityAttributes;
-    PACL acl;
-    SECURITY_DESCRIPTOR sd;
-    EXPLICIT_ACCESS_W ea[4];
-    char sid[64];
-};
-
-static int
-initializeDefaultSecurityAttributes(
-    PSECURITY_ATTRIBUTES *securityAttributes,
-    struct _Py_SECURITY_ATTRIBUTE_DATA *data
-) {
-    assert(securityAttributes);
-    assert(data);
-    *securityAttributes = NULL;
-    memset(data, 0, sizeof(*data));
-    return 0;
-}
-
-static int
-initializeMkdir700SecurityAttributes(
-    PSECURITY_ATTRIBUTES *securityAttributes,
-    struct _Py_SECURITY_ATTRIBUTE_DATA *data
-) {
-    assert(securityAttributes);
-    assert(data);
-    *securityAttributes = NULL;
-    memset(data, 0, sizeof(*data));
-
-    if (!InitializeSecurityDescriptor(&data->sd, SECURITY_DESCRIPTOR_REVISION)
-        || !SetSecurityDescriptorGroup(&data->sd, NULL, TRUE)) {
-        return GetLastError();
-    }
-
-    int use_alias = 0;
-    DWORD cbSid = sizeof(data->sid);
-    if (!CreateWellKnownSid(WinCreatorOwnerRightsSid, NULL, (PSID)data->sid, &cbSid)) {
-        use_alias = 1;
-    }
-
-    data->securityAttributes.nLength = sizeof(SECURITY_ATTRIBUTES);
-    data->ea[0].grfAccessPermissions = GENERIC_ALL;
-    data->ea[0].grfAccessMode = SET_ACCESS;
-    data->ea[0].grfInheritance = SUB_CONTAINERS_AND_OBJECTS_INHERIT;
-    if (use_alias) {
-        data->ea[0].Trustee.TrusteeForm = TRUSTEE_IS_NAME;
-        data->ea[0].Trustee.TrusteeType = TRUSTEE_IS_ALIAS;
-        data->ea[0].Trustee.ptstrName = L"CURRENT_USER";
-    } else {
-        data->ea[0].Trustee.TrusteeForm = TRUSTEE_IS_SID;
-        data->ea[0].Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP;
-        data->ea[0].Trustee.ptstrName = (LPWCH)(SID*)data->sid;
-    }
-
-    data->ea[1].grfAccessPermissions = GENERIC_ALL;
-    data->ea[1].grfAccessMode = SET_ACCESS;
-    data->ea[1].grfInheritance = SUB_CONTAINERS_AND_OBJECTS_INHERIT;
-    data->ea[1].Trustee.TrusteeForm = TRUSTEE_IS_NAME;
-    data->ea[1].Trustee.TrusteeType = TRUSTEE_IS_ALIAS;
-    data->ea[1].Trustee.ptstrName = L"SYSTEM";
-
-    data->ea[2].grfAccessPermissions = GENERIC_ALL;
-    data->ea[2].grfAccessMode = SET_ACCESS;
-    data->ea[2].grfInheritance = SUB_CONTAINERS_AND_OBJECTS_INHERIT;
-    data->ea[2].Trustee.TrusteeForm = TRUSTEE_IS_NAME;
-    data->ea[2].Trustee.TrusteeType = TRUSTEE_IS_ALIAS;
-    data->ea[2].Trustee.ptstrName = L"ADMINISTRATORS";
-
-    int r = SetEntriesInAclW(3, data->ea, NULL, &data->acl);
-    if (r) {
-        return r;
-    }
-    if (!SetSecurityDescriptorDacl(&data->sd, TRUE, data->acl, FALSE)) {
-        return GetLastError();
+    else {
+        result = PyUnicode_FromWideChar(norm_path, norm_len);
     }
-    data->securityAttributes.lpSecurityDescriptor = &data->sd;
-    *securityAttributes = &data->securityAttributes;
-    return 0;
-}
-
-static int
-clearSecurityAttributes(
-    PSECURITY_ATTRIBUTES *securityAttributes,
-    struct _Py_SECURITY_ATTRIBUTE_DATA *data
-) {
-    assert(securityAttributes);
-    assert(data);
-    *securityAttributes = NULL;
-    if (data->acl) {
-        if (LocalFree((void *)data->acl)) {
-            return GetLastError();
-        }
+    if (PyBytes_Check(path->object)) {
+        Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
     }
-    return 0;
+    return result;
 }
 
-#endif
-
 /*[clinic input]
 os.mkdir
 
@@ -5713,8 +5618,8 @@ os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd)
 #ifdef MS_WINDOWS
     int error = 0;
     int pathError = 0;
+    SECURITY_ATTRIBUTES secAttr = { sizeof(secAttr) };
     SECURITY_ATTRIBUTES *pSecAttr = NULL;
-    struct _Py_SECURITY_ATTRIBUTE_DATA secAttrData;
 #endif
 #ifdef HAVE_MKDIRAT
     int mkdirat_unavailable = 0;
@@ -5727,26 +5632,34 @@ os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd)
 
 #ifdef MS_WINDOWS
     Py_BEGIN_ALLOW_THREADS
-    switch (mode) {
-    case 0x1C0: // 0o700
-        error = initializeMkdir700SecurityAttributes(&pSecAttr, &secAttrData);
-        break;
-    default:
-        error = initializeDefaultSecurityAttributes(&pSecAttr, &secAttrData);
-        break;
+    if (mode == 0700 /* 0o700 */) {
+        ULONG sdSize;
+        pSecAttr = &secAttr;
+        // Set a discretionary ACL (D) that is protected (P) and includes
+        // inheritable (OICI) entries that allow (A) full control (FA) to
+        // SYSTEM (SY), Administrators (BA), and the owner (OW).
+        if (!ConvertStringSecurityDescriptorToSecurityDescriptorW(
+            L"D:P(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;FA;;;OW)",
+            SDDL_REVISION_1,
+            &secAttr.lpSecurityDescriptor,
+            &sdSize
+        )) {
+            error = GetLastError();
+        }
     }
     if (!error) {
         result = CreateDirectoryW(path->wide, pSecAttr);
-        error = clearSecurityAttributes(&pSecAttr, &secAttrData);
-    } else {
-        // Ignore error from "clear" - we have a more interesting one already
-        clearSecurityAttributes(&pSecAttr, &secAttrData);
+        if (secAttr.lpSecurityDescriptor &&
+            // uncommonly, LocalFree returns non-zero on error, but still uses
+            // GetLastError() to see what the error code is
+            LocalFree(secAttr.lpSecurityDescriptor)) {
+            error = GetLastError();
+        }
     }
     Py_END_ALLOW_THREADS
 
     if (error) {
-        PyErr_SetFromWindowsErr(error);
-        return NULL;
+        return PyErr_SetFromWindowsErr(error);
     }
     if (!result) {
         return path_error(path);
@@ -7969,6 +7882,7 @@ os_register_at_fork_impl(PyObject *module, PyObject *before,
 }
 #endif /* HAVE_FORK */
 
+#if defined(HAVE_FORK1) || defined(HAVE_FORKPTY) || defined(HAVE_FORK)
 // Common code to raise a warning if we detect there is more than one thread
 // running in the process. Best effort, silent if unable to count threads.
 // Constraint: Quick. Never overcounts. Never leaves an error set.
@@ -8072,6 +7986,7 @@ warn_about_fork_with_threads(const char* name)
         PyErr_Clear();
     }
 }
+#endif  // HAVE_FORK1 || HAVE_FORKPTY || HAVE_FORK
 
 #ifdef HAVE_FORK1
 /*[clinic input]
@@ -8262,6 +8177,16 @@ os_sched_param_impl(PyTypeObject *type, PyObject *sched_priority)
     return res;
 }
 
+static PyObject *
+os_sched_param_reduce(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    return Py_BuildValue("(O(N))", Py_TYPE(self), PyStructSequence_GetItem(self, 0));
+}
+
+static PyMethodDef os_sched_param_reduce_method = {
+    "__reduce__", (PyCFunction)os_sched_param_reduce, METH_NOARGS|METH_COEXIST, NULL,
+};
+
 PyDoc_VAR(os_sched_param__doc__);
 
 static PyStructSequence_Field sched_param_fields[] = {
@@ -8729,6 +8654,19 @@ os_unlockpt_impl(PyObject *module, int fd)
 #endif /* HAVE_UNLOCKPT */
 
 #if defined(HAVE_PTSNAME) || defined(HAVE_PTSNAME_R)
+static PyObject *
+py_ptsname(int fd)
+{
+    // POSIX manpage: Upon failure, ptsname() shall return a null pointer
+    // and may set errno. Always initialize errno to avoid undefined behavior.
+    errno = 0;
+    char *name = ptsname(fd);
+    if (name == NULL) {
+        return posix_error();
+    }
+    return PyUnicode_DecodeFSDefault(name);
+}
+
 /*[clinic input]
 os.ptsname
 
@@ -8750,22 +8688,22 @@ os_ptsname_impl(PyObject *module, int fd)
     int ret;
     char name[MAXPATHLEN+1];
 
-    ret = ptsname_r(fd, name, sizeof(name));
+    if (HAVE_PTSNAME_R_RUNTIME) {
+        ret = ptsname_r(fd, name, sizeof(name));
+    }
+    else {
+        // fallback to ptsname() if ptsname_r() is not available in runtime.
+        return py_ptsname(fd);
+    }
     if (ret != 0) {
         errno = ret;
         return posix_error();
     }
-#else
-    char *name;
-
-    name = ptsname(fd);
-    /* POSIX manpage: Upon failure, ptsname() shall return a null pointer and may set errno.
-       *MAY* set errno? Hmm... */
-    if (name == NULL)
-        return posix_error();
-#endif /* HAVE_PTSNAME_R */
 
     return PyUnicode_DecodeFSDefault(name);
+#else
+    return py_ptsname(fd);
+#endif /* HAVE_PTSNAME_R */
 }
 #endif /* defined(HAVE_PTSNAME) || defined(HAVE_PTSNAME_R) */
 
@@ -9595,42 +9533,33 @@ os_kill_impl(PyObject *module, pid_t pid, Py_ssize_t signal)
 
     Py_RETURN_NONE;
 #else /* !MS_WINDOWS */
-    PyObject *result;
     DWORD sig = (DWORD)signal;
-    DWORD err;
-    HANDLE handle;
 
 #ifdef HAVE_WINDOWS_CONSOLE_IO
     /* Console processes which share a common console can be sent CTRL+C or
        CTRL+BREAK events, provided they handle said events. */
     if (sig == CTRL_C_EVENT || sig == CTRL_BREAK_EVENT) {
         if (GenerateConsoleCtrlEvent(sig, (DWORD)pid) == 0) {
-            err = GetLastError();
-            PyErr_SetFromWindowsErr(err);
-        }
-        else {
-            Py_RETURN_NONE;
+            return PyErr_SetFromWindowsErr(0);
         }
+        Py_RETURN_NONE;
     }
 #endif /* HAVE_WINDOWS_CONSOLE_IO */
 
     /* If the signal is outside of what GenerateConsoleCtrlEvent can use,
        attempt to open and terminate the process. */
-    handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, (DWORD)pid);
+    HANDLE handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, (DWORD)pid);
     if (handle == NULL) {
-        err = GetLastError();
-        return PyErr_SetFromWindowsErr(err);
+        return PyErr_SetFromWindowsErr(0);
     }
 
-    if (TerminateProcess(handle, sig) == 0) {
-        err = GetLastError();
-        result = PyErr_SetFromWindowsErr(err);
-    } else {
-        result = Py_NewRef(Py_None);
+    BOOL res = TerminateProcess(handle, sig);
+    CloseHandle(handle);
+    if (res == 0) {
+        return PyErr_SetFromWindowsErr(0);
     }
 
-    CloseHandle(handle);
-    return result;
+    Py_RETURN_NONE;
 #endif /* !MS_WINDOWS */
 }
 #endif /* HAVE_KILL */
@@ -10196,7 +10125,10 @@ os_wait_impl(PyObject *module)
 }
 #endif /* HAVE_WAIT */
 
-#if defined(__linux__) && defined(__NR_pidfd_open)
+
+// This system call always crashes on older Android versions.
+#if defined(__linux__) && defined(__NR_pidfd_open) && \
+    !(defined(__ANDROID__) && __ANDROID_API__ < 31)
 /*[clinic input]
 os.pidfd_open
   pid: pid_t
@@ -10396,7 +10328,7 @@ os_readlink_impl(PyObject *module, path_t *path, int dir_fd)
             name[1] = L'\\';
         }
         result = PyUnicode_FromWideChar(name, nameLen);
-        if (result && path->narrow) {
+        if (result && PyBytes_Check(path->object)) {
             Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
         }
     }
@@ -10679,12 +10611,12 @@ Return a collection containing process timing information.
 
 The object returned behaves like a named tuple with these fields:
   (utime, stime, cutime, cstime, elapsed_time)
-All fields are floating point numbers.
+All fields are floating-point numbers.
 [clinic start generated code]*/
 
 static PyObject *
 os_times_impl(PyObject *module)
-/*[clinic end generated code: output=35f640503557d32a input=2bf9df3d6ab2e48b]*/
+/*[clinic end generated code: output=35f640503557d32a input=8dbfe33a2dcc3df3]*/
 {
 #ifdef MS_WINDOWS
     FILETIME create, exit, kernel, user;
@@ -12638,8 +12570,30 @@ os_mknod_impl(PyObject *module, path_t *path, int mode, dev_t device,
 
 
 #ifdef HAVE_DEVICE_MACROS
+static PyObject *
+major_minor_conv(unsigned int value)
+{
+#ifdef NODEV
+    if (value == (unsigned int)NODEV) {
+        return PyLong_FromLong((int)NODEV);
+    }
+#endif
+    return PyLong_FromUnsignedLong(value);
+}
+
+static int
+major_minor_check(dev_t value)
+{
+#ifdef NODEV
+    if (value == NODEV) {
+        return 1;
+    }
+#endif
+    return (dev_t)(unsigned int)value == value;
+}
+
 /*[clinic input]
-os.major -> unsigned_int
+os.major
 
     device: dev_t
     /
@@ -12647,16 +12601,16 @@ os.major -> unsigned_int
 Extracts a device major number from a raw device number.
 [clinic start generated code]*/
 
-static unsigned int
+static PyObject *
 os_major_impl(PyObject *module, dev_t device)
-/*[clinic end generated code: output=5b3b2589bafb498e input=1e16a4d30c4d4462]*/
+/*[clinic end generated code: output=4071ffee17647891 input=b1a0a14ec9448229]*/
 {
-    return major(device);
+    return major_minor_conv(major(device));
 }
 
 
 /*[clinic input]
-os.minor -> unsigned_int
+os.minor
 
     device: dev_t
     /
@@ -12664,28 +12618,33 @@ os.minor -> unsigned_int
 Extracts a device minor number from a raw device number.
 [clinic start generated code]*/
 
-static unsigned int
+static PyObject *
 os_minor_impl(PyObject *module, dev_t device)
-/*[clinic end generated code: output=5e1a25e630b0157d input=0842c6d23f24c65e]*/
+/*[clinic end generated code: output=306cb78e3bc5004f input=2f686e463682a9da]*/
 {
-    return minor(device);
+    return major_minor_conv(minor(device));
 }
 
 
 /*[clinic input]
 os.makedev -> dev_t
 
-    major: int
-    minor: int
+    major: dev_t
+    minor: dev_t
     /
 
 Composes a raw device number from the major and minor device numbers.
 [clinic start generated code]*/
 
 static dev_t
-os_makedev_impl(PyObject *module, int major, int minor)
-/*[clinic end generated code: output=881aaa4aba6f6a52 input=4b9fd8fc73cbe48f]*/
+os_makedev_impl(PyObject *module, dev_t major, dev_t minor)
+/*[clinic end generated code: output=cad6125c51f5af80 input=2146126ec02e55c1]*/
 {
+    if (!major_minor_check(major) || !major_minor_check(minor)) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "Python int too large to convert to C unsigned int");
+        return (dev_t)-1;
+    }
     return makedev(major, minor);
 }
 #endif /* HAVE_DEVICE_MACROS */
@@ -16017,7 +15976,8 @@ DirEntry_from_find_data(PyObject *module, path_t *path, WIN32_FIND_DATAW *dataW)
     entry->name = PyUnicode_FromWideChar(dataW->cFileName, -1);
     if (!entry->name)
         goto error;
-    if (path->narrow) {
+    int return_bytes = path->wide && PyBytes_Check(path->object);
+    if (return_bytes) {
         Py_SETREF(entry->name, PyUnicode_EncodeFSDefault(entry->name));
         if (!entry->name)
             goto error;
@@ -16031,7 +15991,7 @@ DirEntry_from_find_data(PyObject *module, path_t *path, WIN32_FIND_DATAW *dataW)
     PyMem_Free(joined_path);
     if (!entry->path)
         goto error;
-    if (path->narrow) {
+    if (return_bytes) {
         Py_SETREF(entry->path, PyUnicode_EncodeFSDefault(entry->path));
         if (!entry->path)
             goto error;
@@ -16845,6 +16805,37 @@ os__supports_virtual_terminal_impl(PyObject *module)
 }
 #endif
 
+/*[clinic input]
+os._inputhook
+
+Calls PyOS_CallInputHook droppong the GIL first
+[clinic start generated code]*/
+
+static PyObject *
+os__inputhook_impl(PyObject *module)
+/*[clinic end generated code: output=525aca4ef3c6149f input=fc531701930d064f]*/
+{
+     int result = 0;
+     if (PyOS_InputHook) {
+         Py_BEGIN_ALLOW_THREADS;
+         result = PyOS_InputHook();
+         Py_END_ALLOW_THREADS;
+     }
+     return PyLong_FromLong(result);
+}
+
+/*[clinic input]
+os._is_inputhook_installed
+
+Checks if PyOS_CallInputHook is set
+[clinic start generated code]*/
+
+static PyObject *
+os__is_inputhook_installed_impl(PyObject *module)
+/*[clinic end generated code: output=3b3eab4f672c689a input=ff177c9938dd76d8]*/
+{
+    return PyBool_FromLong(PyOS_InputHook != NULL);
+}
 
 static PyMethodDef posix_methods[] = {
 
@@ -17053,9 +17044,13 @@ static PyMethodDef posix_methods[] = {
     OS__PATH_ISDIR_METHODDEF
     OS__PATH_ISFILE_METHODDEF
     OS__PATH_ISLINK_METHODDEF
+    OS__PATH_ISJUNCTION_METHODDEF
     OS__PATH_EXISTS_METHODDEF
+    OS__PATH_LEXISTS_METHODDEF
 
     OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
+    OS__INPUTHOOK_METHODDEF
+    OS__IS_INPUTHOOK_INSTALLED_METHODDEF
     {NULL,              NULL}            /* Sentinel */
 };
 
@@ -17767,6 +17762,9 @@ PROBE(probe_futimens, HAVE_FUTIMENS_RUNTIME)
 PROBE(probe_utimensat, HAVE_UTIMENSAT_RUNTIME)
 #endif
 
+#ifdef HAVE_PTSNAME_R
+PROBE(probe_ptsname_r, HAVE_PTSNAME_R_RUNTIME)
+#endif
 
 
 
@@ -17907,6 +17905,10 @@ static const struct have_function {
     { "HAVE_UTIMENSAT", probe_utimensat },
 #endif
 
+#ifdef HAVE_PTSNAME_R
+    { "HAVE_PTSNAME_R", probe_ptsname_r },
+#endif
+
 #ifdef MS_WINDOWS
     { "MS_WINDOWS", NULL },
 #endif
@@ -17984,6 +17986,12 @@ posixmodule_exec(PyObject *m)
         return -1;
     }
     ((PyTypeObject *)state->SchedParamType)->tp_new = os_sched_param;
+    if (_PyType_AddMethod((PyTypeObject *)state->SchedParamType,
+                          &os_sched_param_reduce_method) < 0)
+    {
+        return -1;
+    }
+    PyType_Modified((PyTypeObject *)state->SchedParamType);
 #endif
 
     /* initialize TerminalSize_info */
diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index f67d480f19de00..e131389805bf3d 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1651,7 +1651,7 @@ PyDoc_STRVAR(pyexpat_module_documentation,
 static int init_handler_descrs(pyexpat_state *state)
 {
     int i;
-    assert(!PyType_HasFeature(state->xml_parse_type, Py_TPFLAGS_VALID_VERSION_TAG));
+    assert(state->xml_parse_type->tp_version_tag == 0);
     for (i = 0; handler_info[i].name != NULL; i++) {
         struct HandlerInfo *hi = &handler_info[i];
         hi->getset.name = hi->name;
@@ -1782,7 +1782,12 @@ add_error(PyObject *errors_module, PyObject *codes_dict,
      *       with the other uses of the XML_ErrorString function
      *       elsewhere within this file.  pyexpat's copy of the messages
      *       only acts as a fallback in case of outdated runtime libexpat,
-     *       where it returns NULL. */
+     *       where it returns NULL.
+     *
+     *       In addition, XML_ErrorString is assumed to return UTF-8 encoded
+     *       strings (in conv_string_to_unicode, we decode them using 'strict'
+     *       error handling).
+     */
     const char *error_string = XML_ErrorString(error_code);
     if (error_string == NULL) {
         error_string = error_info_of[error_index].description;
diff --git a/Modules/readline.c b/Modules/readline.c
index 35655c70a4618f..7d1f703f7dbdde 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -351,6 +351,12 @@ readline_append_history_file_impl(PyObject *module, int nelements,
                                   PyObject *filename_obj)
 /*[clinic end generated code: output=5df06fc9da56e4e4 input=784b774db3a4b7c5]*/
 {
+    if (nelements < 0)
+    {
+        PyErr_SetString(PyExc_ValueError, "nelements must be positive");
+        return NULL;
+    }
+
     PyObject *filename_bytes;
     const char *filename;
     int err;
diff --git a/Modules/rotatingtree.c b/Modules/rotatingtree.c
index 217e495b3d2a9d..5910e25bed6389 100644
--- a/Modules/rotatingtree.c
+++ b/Modules/rotatingtree.c
@@ -1,9 +1,4 @@
-#ifndef Py_BUILD_CORE_BUILTIN
-#  define Py_BUILD_CORE_MODULE 1
-#endif
-
 #include "Python.h"
-#include "pycore_lock.h"
 #include "rotatingtree.h"
 
 #define KEY_LOWER_THAN(key1, key2)  ((char*)(key1) < (char*)(key2))
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 3eaee22c652c28..5bd9b7732a44a4 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -262,7 +262,7 @@ A file descriptor is either a socket or file object, or a small integer
 gotten from a fileno() method call on one of those.
 
 The optional 4th argument specifies a timeout in seconds; it may be
-a floating point number to specify fractions of seconds.  If it is absent
+a floating-point number to specify fractions of seconds.  If it is absent
 or None, the call will never time out.
 
 The return value is a tuple of three lists corresponding to the first three
@@ -277,7 +277,7 @@ descriptors can be used.
 static PyObject *
 select_select_impl(PyObject *module, PyObject *rlist, PyObject *wlist,
                    PyObject *xlist, PyObject *timeout_obj)
-/*[clinic end generated code: output=2b3cfa824f7ae4cf input=e467f5d68033de00]*/
+/*[clinic end generated code: output=2b3cfa824f7ae4cf input=1199d5e101abca4a]*/
 {
 #ifdef SELECT_USES_HEAP
     pylist *rfd2obj, *wfd2obj, *efd2obj;
@@ -473,6 +473,7 @@ update_ufd_array(pollObject *self)
 }
 
 /*[clinic input]
+@critical_section
 select.poll.register
 
     fd: fildes
@@ -486,7 +487,7 @@ Register a file descriptor with the polling object.
 
 static PyObject *
 select_poll_register_impl(pollObject *self, int fd, unsigned short eventmask)
-/*[clinic end generated code: output=0dc7173c800a4a65 input=34e16cfb28d3c900]*/
+/*[clinic end generated code: output=0dc7173c800a4a65 input=c475e029ce6c2830]*/
 {
     PyObject *key, *value;
     int err;
@@ -514,6 +515,7 @@ select_poll_register_impl(pollObject *self, int fd, unsigned short eventmask)
 
 
 /*[clinic input]
+@critical_section
 select.poll.modify
 
     fd: fildes
@@ -528,7 +530,7 @@ Modify an already registered file descriptor.
 
 static PyObject *
 select_poll_modify_impl(pollObject *self, int fd, unsigned short eventmask)
-/*[clinic end generated code: output=1a7b88bf079eff17 input=a8e383df075c32cf]*/
+/*[clinic end generated code: output=1a7b88bf079eff17 input=38c9db5346711872]*/
 {
     PyObject *key, *value;
     int err;
@@ -566,6 +568,7 @@ select_poll_modify_impl(pollObject *self, int fd, unsigned short eventmask)
 
 
 /*[clinic input]
+@critical_section
 select.poll.unregister
 
     fd: fildes
@@ -576,7 +579,7 @@ Remove a file descriptor being tracked by the polling object.
 
 static PyObject *
 select_poll_unregister_impl(pollObject *self, int fd)
-/*[clinic end generated code: output=8c9f42e75e7d291b input=4b4fccc1040e79cb]*/
+/*[clinic end generated code: output=8c9f42e75e7d291b input=ae6315d7f5243704]*/
 {
     PyObject *key;
 
@@ -599,6 +602,7 @@ select_poll_unregister_impl(pollObject *self, int fd)
 }
 
 /*[clinic input]
+@critical_section
 select.poll.poll
 
     timeout as timeout_obj: object = None
@@ -614,7 +618,7 @@ report, as a list of (fd, event) 2-tuples.
 
 static PyObject *
 select_poll_poll_impl(pollObject *self, PyObject *timeout_obj)
-/*[clinic end generated code: output=876e837d193ed7e4 input=c2f6953ec45e5622]*/
+/*[clinic end generated code: output=876e837d193ed7e4 input=54310631457efdec]*/
 {
     PyObject *result_list = NULL;
     int poll_result, i, j;
@@ -857,6 +861,7 @@ internal_devpoll_register(devpollObject *self, int fd,
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.register
 
     fd: fildes
@@ -872,12 +877,13 @@ Register a file descriptor with the polling object.
 static PyObject *
 select_devpoll_register_impl(devpollObject *self, int fd,
                              unsigned short eventmask)
-/*[clinic end generated code: output=6e07fe8b74abba0c input=22006fabe9567522]*/
+/*[clinic end generated code: output=6e07fe8b74abba0c input=8d48bd2653a61c42]*/
 {
     return internal_devpoll_register(self, fd, eventmask, 0);
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.modify
 
     fd: fildes
@@ -893,12 +899,13 @@ Modify a possible already registered file descriptor.
 static PyObject *
 select_devpoll_modify_impl(devpollObject *self, int fd,
                            unsigned short eventmask)
-/*[clinic end generated code: output=bc2e6d23aaff98b4 input=09fa335db7cdc09e]*/
+/*[clinic end generated code: output=bc2e6d23aaff98b4 input=773b37e9abca2460]*/
 {
     return internal_devpoll_register(self, fd, eventmask, 1);
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.unregister
 
     fd: fildes
@@ -909,7 +916,7 @@ Remove a file descriptor being tracked by the polling object.
 
 static PyObject *
 select_devpoll_unregister_impl(devpollObject *self, int fd)
-/*[clinic end generated code: output=95519ffa0c7d43fe input=b4ea42a4442fd467]*/
+/*[clinic end generated code: output=95519ffa0c7d43fe input=6052d368368d4d05]*/
 {
     if (self->fd_devpoll < 0)
         return devpoll_err_closed();
@@ -926,6 +933,7 @@ select_devpoll_unregister_impl(devpollObject *self, int fd)
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.poll
     timeout as timeout_obj: object = None
       The maximum time to wait in milliseconds, or else None (or a negative
@@ -940,7 +948,7 @@ report, as a list of (fd, event) 2-tuples.
 
 static PyObject *
 select_devpoll_poll_impl(devpollObject *self, PyObject *timeout_obj)
-/*[clinic end generated code: output=2654e5457cca0b3c input=3c3f0a355ec2bedb]*/
+/*[clinic end generated code: output=2654e5457cca0b3c input=fe7a3f6dcbc118c5]*/
 {
     struct dvpoll dvp;
     PyObject *result_list = NULL;
@@ -1059,6 +1067,7 @@ devpoll_internal_close(devpollObject *self)
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.close
 
 Close the devpoll file descriptor.
@@ -1068,7 +1077,7 @@ Further operations on the devpoll object will raise an exception.
 
 static PyObject *
 select_devpoll_close_impl(devpollObject *self)
-/*[clinic end generated code: output=26b355bd6429f21b input=6273c30f5560a99b]*/
+/*[clinic end generated code: output=26b355bd6429f21b input=408fde21a377ccfb]*/
 {
     errno = devpoll_internal_close(self);
     if (errno < 0) {
@@ -1088,6 +1097,7 @@ devpoll_get_closed(devpollObject *self, void *Py_UNUSED(ignored))
 }
 
 /*[clinic input]
+@critical_section
 select.devpoll.fileno
 
 Return the file descriptor.
@@ -1095,7 +1105,7 @@ Return the file descriptor.
 
 static PyObject *
 select_devpoll_fileno_impl(devpollObject *self)
-/*[clinic end generated code: output=26920929f8d292f4 input=ef15331ebde6c368]*/
+/*[clinic end generated code: output=26920929f8d292f4 input=8c9db2efa1ade538]*/
 {
     if (self->fd_devpoll < 0)
         return devpoll_err_closed();
@@ -1378,6 +1388,7 @@ pyepoll_dealloc(pyEpoll_Object *self)
 }
 
 /*[clinic input]
+@critical_section
 select.epoll.close
 
 Close the epoll control file descriptor.
@@ -1387,7 +1398,7 @@ Further operations on the epoll object will raise an exception.
 
 static PyObject *
 select_epoll_close_impl(pyEpoll_Object *self)
-/*[clinic end generated code: output=ee2144c446a1a435 input=ca6c66ba5a736bfd]*/
+/*[clinic end generated code: output=ee2144c446a1a435 input=f626a769192e1dbe]*/
 {
     errno = pyepoll_internal_close(self);
     if (errno < 0) {
@@ -2023,10 +2034,8 @@ kqueue_tracking_init(PyObject *module) {
 }
 
 static int
-kqueue_tracking_add(_selectstate *state, kqueue_queue_Object *self) {
-    if (!state->kqueue_tracking_initialized) {
-        kqueue_tracking_init(PyType_GetModule(Py_TYPE(self)));
-    }
+kqueue_tracking_add_lock_held(_selectstate *state, kqueue_queue_Object *self)
+{
     assert(self->kqfd >= 0);
     _kqueue_list_item *item = PyMem_New(_kqueue_list_item, 1);
     if (item == NULL) {
@@ -2039,8 +2048,23 @@ kqueue_tracking_add(_selectstate *state, kqueue_queue_Object *self) {
     return 0;
 }
 
+static int
+kqueue_tracking_add(_selectstate *state, kqueue_queue_Object *self)
+{
+    int ret;
+    PyObject *module = PyType_GetModule(Py_TYPE(self));
+    Py_BEGIN_CRITICAL_SECTION(module);
+    if (!state->kqueue_tracking_initialized) {
+        kqueue_tracking_init(module);
+    }
+    ret = kqueue_tracking_add_lock_held(state, self);
+    Py_END_CRITICAL_SECTION();
+    return ret;
+}
+
 static void
-kqueue_tracking_remove(_selectstate *state, kqueue_queue_Object *self) {
+kqueue_tracking_remove_lock_held(_selectstate *state, kqueue_queue_Object *self)
+{
     _kqueue_list *listptr = &state->kqueue_open_list;
     while (*listptr != NULL) {
         _kqueue_list_item *item = *listptr;
@@ -2056,6 +2080,14 @@ kqueue_tracking_remove(_selectstate *state, kqueue_queue_Object *self) {
     assert(0);
 }
 
+static void
+kqueue_tracking_remove(_selectstate *state, kqueue_queue_Object *self)
+{
+    Py_BEGIN_CRITICAL_SECTION(PyType_GetModule(Py_TYPE(self)));
+    kqueue_tracking_remove_lock_held(state, self);
+    Py_END_CRITICAL_SECTION();
+}
+
 static int
 kqueue_queue_internal_close(kqueue_queue_Object *self)
 {
@@ -2150,6 +2182,7 @@ kqueue_queue_finalize(kqueue_queue_Object *self)
 }
 
 /*[clinic input]
+@critical_section
 select.kqueue.close
 
 Close the kqueue control file descriptor.
@@ -2159,7 +2192,7 @@ Further operations on the kqueue object will raise an exception.
 
 static PyObject *
 select_kqueue_close_impl(kqueue_queue_Object *self)
-/*[clinic end generated code: output=d1c7df0b407a4bc1 input=0b12d95430e0634c]*/
+/*[clinic end generated code: output=d1c7df0b407a4bc1 input=6d763c858b17b690]*/
 {
     errno = kqueue_queue_internal_close(self);
     if (errno < 0) {
diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index 7de5ebe0899b35..0e53a36bca55f0 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -638,7 +638,7 @@ signal_strsignal_impl(PyObject *module, int signalnum)
             res = "Aborted";
             break;
         case SIGFPE:
-            res = "Floating point exception";
+            res = "Floating-point exception";
             break;
         case SIGSEGV:
             res = "Segmentation fault";
@@ -1199,13 +1199,13 @@ signal.sigtimedwait
 
 Like sigwaitinfo(), but with a timeout.
 
-The timeout is specified in seconds, with floating point numbers allowed.
+The timeout is specified in seconds, with floating-point numbers allowed.
 [clinic start generated code]*/
 
 static PyObject *
 signal_sigtimedwait_impl(PyObject *module, sigset_t sigset,
                          PyObject *timeout_obj)
-/*[clinic end generated code: output=59c8971e8ae18a64 input=87fd39237cf0b7ba]*/
+/*[clinic end generated code: output=59c8971e8ae18a64 input=955773219c1596cd]*/
 {
     PyTime_t timeout;
     if (_PyTime_FromSecondsObject(&timeout,
@@ -1299,7 +1299,9 @@ signal_pthread_kill_impl(PyObject *module, unsigned long thread_id,
 #endif   /* #if defined(HAVE_PTHREAD_KILL) */
 
 
-#if defined(__linux__) && defined(__NR_pidfd_send_signal)
+// This system call always crashes on older Android versions.
+#if defined(__linux__) && defined(__NR_pidfd_send_signal) && \
+    !(defined(__ANDROID__) && __ANDROID_API__ < 31)
 /*[clinic input]
 signal.pidfd_send_signal
 
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index daec560ddfcac7..1c0bc796732120 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -810,7 +810,9 @@ internal_select(PySocketSockObject *s, int writing, PyTime_t interval,
 
     /* s->sock_timeout is in seconds, timeout in ms */
     ms = _PyTime_AsMilliseconds(interval, _PyTime_ROUND_CEILING);
-    assert(ms <= INT_MAX);
+    if (ms > INT_MAX) {
+        ms = INT_MAX;
+    }
 
     /* On some OSes, typically BSD-based ones, the timeout parameter of the
        poll() syscall, when negative, must be exactly INFTIM, where defined,
@@ -822,6 +824,7 @@ internal_select(PySocketSockObject *s, int writing, PyTime_t interval,
         ms = -1;
 #endif
     }
+    assert(INT_MIN <= ms && ms <= INT_MAX);
 
     Py_BEGIN_ALLOW_THREADS;
     n = poll(&pollfd, 1, (int)ms);
diff --git a/Modules/symtablemodule.c b/Modules/symtablemodule.c
index b4dbb54c3b47b0..00e650a9adaaf7 100644
--- a/Modules/symtablemodule.c
+++ b/Modules/symtablemodule.c
@@ -88,11 +88,11 @@ symtable_init_constants(PyObject *m)
         return -1;
     if (PyModule_AddIntConstant(m, "TYPE_ANNOTATION", AnnotationBlock) < 0)
         return -1;
-    if (PyModule_AddIntConstant(m, "TYPE_TYPE_VAR_BOUND", TypeVarBoundBlock) < 0)
-        return -1;
     if (PyModule_AddIntConstant(m, "TYPE_TYPE_ALIAS", TypeAliasBlock) < 0)
         return -1;
-    if (PyModule_AddIntConstant(m, "TYPE_TYPE_PARAM", TypeParamBlock) < 0)
+    if (PyModule_AddIntConstant(m, "TYPE_TYPE_PARAMETERS", TypeParametersBlock) < 0)
+        return -1;
+    if (PyModule_AddIntConstant(m, "TYPE_TYPE_VARIABLE", TypeVariableBlock) < 0)
         return -1;
 
     if (PyModule_AddIntMacro(m, LOCAL) < 0) return -1;
diff --git a/Modules/syslogmodule.c b/Modules/syslogmodule.c
index 14e7ca591a076b..adbd2fcc6ed74d 100644
--- a/Modules/syslogmodule.c
+++ b/Modules/syslogmodule.c
@@ -258,7 +258,7 @@ syslog_closelog_impl(PyObject *module)
     // Since the sys.closelog changes the process level state of syslog library,
     // this operation is only allowed for the main interpreter.
     if (!is_main_interpreter()) {
-        PyErr_SetString(PyExc_RuntimeError, "sunbinterpreter can't use syslog.closelog()");
+        PyErr_SetString(PyExc_RuntimeError, "subinterpreter can't use syslog.closelog()");
         return NULL;
     }
 
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 0511339978897a..94260ba83f680c 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -116,7 +116,7 @@ time_time(PyObject *self, PyObject *unused)
 
 
 PyDoc_STRVAR(time_doc,
-"time() -> floating point number\n\
+"time() -> floating-point number\n\
 \n\
 Return the current time in seconds since the Epoch.\n\
 Fractions of a second may be present if the system clock provides them.");
@@ -350,7 +350,7 @@ time_clock_getres(PyObject *self, PyObject *args)
 }
 
 PyDoc_STRVAR(clock_getres_doc,
-"clock_getres(clk_id) -> floating point number\n\
+"clock_getres(clk_id) -> floating-point number\n\
 \n\
 Return the resolution (precision) of the specified clock clk_id.");
 
@@ -413,7 +413,7 @@ PyDoc_STRVAR(sleep_doc,
 "sleep(seconds)\n\
 \n\
 Delay execution for a given number of seconds.  The argument may be\n\
-a floating point number for subsecond precision.");
+a floating-point number for subsecond precision.");
 
 static PyStructSequence_Field struct_time_type_fields[] = {
     {"tm_year", "year, for example, 1993"},
@@ -462,7 +462,18 @@ tmtotuple(time_module_state *state, struct tm *p
     if (v == NULL)
         return NULL;
 
-#define SET(i,val) PyStructSequence_SET_ITEM(v, i, PyLong_FromLong((long) val))
+#define SET_ITEM(INDEX, CALL)                       \
+    do {                                            \
+        PyObject *obj = (CALL);                     \
+        if (obj == NULL) {                          \
+            Py_DECREF(v);                           \
+            return NULL;                            \
+        }                                           \
+        PyStructSequence_SET_ITEM(v, (INDEX), obj); \
+    } while (0)
+
+#define SET(INDEX, VAL) \
+    SET_ITEM((INDEX), PyLong_FromLong((long) (VAL)))
 
     SET(0, p->tm_year + 1900);
     SET(1, p->tm_mon + 1);         /* Want January == 1 */
@@ -474,19 +485,15 @@ tmtotuple(time_module_state *state, struct tm *p
     SET(7, p->tm_yday + 1);        /* Want January, 1 == 1 */
     SET(8, p->tm_isdst);
 #ifdef HAVE_STRUCT_TM_TM_ZONE
-    PyStructSequence_SET_ITEM(v, 9,
-        PyUnicode_DecodeLocale(p->tm_zone, "surrogateescape"));
+    SET_ITEM(9, PyUnicode_DecodeLocale(p->tm_zone, "surrogateescape"));
     SET(10, p->tm_gmtoff);
 #else
-    PyStructSequence_SET_ITEM(v, 9,
-        PyUnicode_DecodeLocale(zone, "surrogateescape"));
-    PyStructSequence_SET_ITEM(v, 10, _PyLong_FromTime_t(gmtoff));
+    SET_ITEM(9, PyUnicode_DecodeLocale(zone, "surrogateescape"));
+    SET_ITEM(10, _PyLong_FromTime_t(gmtoff));
 #endif /* HAVE_STRUCT_TM_TM_ZONE */
+
 #undef SET
-    if (PyErr_Occurred()) {
-        Py_XDECREF(v);
-        return NULL;
-    }
+#undef SET_ITEM
 
     return v;
 }
@@ -769,27 +776,100 @@ the C library strftime function.\n"
 #endif
 
 static PyObject *
-time_strftime(PyObject *module, PyObject *args)
+time_strftime1(time_char **outbuf, size_t *bufsize,
+               time_char *format, size_t fmtlen,
+               struct tm *tm)
 {
-    PyObject *tup = NULL;
-    struct tm buf;
-    const time_char *fmt;
+    size_t buflen;
+#if defined(MS_WINDOWS) && !defined(HAVE_WCSFTIME)
+    /* check that the format string contains only valid directives */
+    for (const time_char *f = strchr(format, '%');
+        f != NULL;
+        f = strchr(f + 2, '%'))
+    {
+        if (f[1] == '#')
+            ++f; /* not documented by python, */
+        if (f[1] == '\0')
+            break;
+        if ((f[1] == 'y') && tm->tm_year < 0) {
+            PyErr_SetString(PyExc_ValueError,
+                            "format %y requires year >= 1900 on Windows");
+            return NULL;
+        }
+    }
+#elif (defined(_AIX) || (defined(__sun) && defined(__SVR4))) && defined(HAVE_WCSFTIME)
+    for (const time_char *f = wcschr(format, '%');
+        f != NULL;
+        f = wcschr(f + 2, '%'))
+    {
+        if (f[1] == L'\0')
+            break;
+        /* Issue #19634: On AIX, wcsftime("y", (1899, 1, 1, 0, 0, 0, 0, 0, 0))
+           returns "0/" instead of "99" */
+        if (f[1] == L'y' && tm->tm_year < 0) {
+            PyErr_SetString(PyExc_ValueError,
+                            "format %y requires year >= 1900 on AIX");
+            return NULL;
+        }
+    }
+#endif
+
+    /* I hate these functions that presume you know how big the output
+     * will be ahead of time...
+     */
+    while (1) {
+        if (*bufsize > PY_SSIZE_T_MAX/sizeof(time_char)) {
+            PyErr_NoMemory();
+            return NULL;
+        }
+        *outbuf = (time_char *)PyMem_Realloc(*outbuf,
+                                             *bufsize*sizeof(time_char));
+        if (*outbuf == NULL) {
+            PyErr_NoMemory();
+            return NULL;
+        }
+#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
+        errno = 0;
+#endif
+        _Py_BEGIN_SUPPRESS_IPH
+        buflen = format_time(*outbuf, *bufsize, format, tm);
+        _Py_END_SUPPRESS_IPH
+#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
+        /* VisualStudio .NET 2005 does this properly */
+        if (buflen == 0 && errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError, "Invalid format string");
+            return NULL;
+        }
+#endif
+        if (buflen == 0 && *bufsize < 256 * fmtlen) {
+            *bufsize += *bufsize;
+            continue;
+        }
+        /* If the buffer is 256 times as long as the format,
+           it's probably not failing for lack of room!
+           More likely, the format yields an empty result,
+           e.g. an empty format, or %Z when the timezone
+           is unknown. */
 #ifdef HAVE_WCSFTIME
-    wchar_t *format;
+        return PyUnicode_FromWideChar(*outbuf, buflen);
 #else
-    PyObject *format;
+        return PyUnicode_DecodeLocaleAndSize(*outbuf, buflen, "surrogateescape");
 #endif
+    }
+}
+
+static PyObject *
+time_strftime(PyObject *module, PyObject *args)
+{
+    PyObject *tup = NULL;
+    struct tm buf;
     PyObject *format_arg;
-    size_t fmtlen, buflen;
-    time_char *outbuf = NULL;
-    size_t i;
-    PyObject *ret = NULL;
+    Py_ssize_t format_size;
+    time_char *format, *outbuf = NULL;
+    size_t fmtlen, bufsize = 1024;
 
     memset((void *) &buf, '\0', sizeof(buf));
 
-    /* Will always expect a unicode string to be passed as format.
-       Given that there's no str type anymore in py3k this seems safe.
-    */
     if (!PyArg_ParseTuple(args, "U|O:strftime", &format_arg, &tup))
         return NULL;
 
@@ -806,7 +886,12 @@ time_strftime(PyObject *module, PyObject *args)
         return NULL;
     }
 
-#if defined(_MSC_VER) || (defined(__sun) && defined(__SVR4)) || defined(_AIX) || defined(__VXWORKS__)
+// Some platforms only support a limited range of years.
+//
+// Android works with negative years on the emulator, but fails on some
+// physical devices (#123017).
+#if defined(_MSC_VER) || (defined(__sun) && defined(__SVR4)) || defined(_AIX) \
+    || defined(__VXWORKS__) || defined(__ANDROID__)
     if (buf.tm_year + 1900 < 1 || 9999 < buf.tm_year + 1900) {
         PyErr_SetString(PyExc_ValueError,
                         "strftime() requires year in [1; 9999]");
@@ -822,101 +907,65 @@ time_strftime(PyObject *module, PyObject *args)
     else if (buf.tm_isdst > 1)
         buf.tm_isdst = 1;
 
-#ifdef HAVE_WCSFTIME
-    format = PyUnicode_AsWideCharString(format_arg, NULL);
-    if (format == NULL)
+    format_size = PyUnicode_GET_LENGTH(format_arg);
+    if ((size_t)format_size > PY_SSIZE_T_MAX/sizeof(time_char) - 1) {
+        PyErr_NoMemory();
         return NULL;
-    fmt = format;
-#else
-    /* Convert the unicode string to an ascii one */
-    format = PyUnicode_EncodeLocale(format_arg, "surrogateescape");
-    if (format == NULL)
+    }
+    format = PyMem_Malloc((format_size + 1)*sizeof(time_char));
+    if (format == NULL) {
+        PyErr_NoMemory();
         return NULL;
-    fmt = PyBytes_AS_STRING(format);
-#endif
-
-#if defined(MS_WINDOWS) && !defined(HAVE_WCSFTIME)
-    /* check that the format string contains only valid directives */
-    for (outbuf = strchr(fmt, '%');
-        outbuf != NULL;
-        outbuf = strchr(outbuf+2, '%'))
-    {
-        if (outbuf[1] == '#')
-            ++outbuf; /* not documented by python, */
-        if (outbuf[1] == '\0')
-            break;
-        if ((outbuf[1] == 'y') && buf.tm_year < 0) {
-            PyErr_SetString(PyExc_ValueError,
-                        "format %y requires year >= 1900 on Windows");
-            Py_DECREF(format);
-            return NULL;
-        }
     }
-#elif (defined(_AIX) || (defined(__sun) && defined(__SVR4))) && defined(HAVE_WCSFTIME)
-    for (outbuf = wcschr(fmt, '%');
-        outbuf != NULL;
-        outbuf = wcschr(outbuf+2, '%'))
-    {
-        if (outbuf[1] == L'\0')
-            break;
-        /* Issue #19634: On AIX, wcsftime("y", (1899, 1, 1, 0, 0, 0, 0, 0, 0))
-           returns "0/" instead of "99" */
-        if (outbuf[1] == L'y' && buf.tm_year < 0) {
-            PyErr_SetString(PyExc_ValueError,
-                            "format %y requires year >= 1900 on AIX");
-            PyMem_Free(format);
-            return NULL;
+    _PyUnicodeWriter writer;
+    _PyUnicodeWriter_Init(&writer);
+    writer.overallocate = 1;
+    Py_ssize_t i = 0;
+    while (i < format_size) {
+        fmtlen = 0;
+        for (; i < format_size; i++) {
+            Py_UCS4 c = PyUnicode_READ_CHAR(format_arg, i);
+            if (!c || c > 127) {
+                break;
+            }
+            format[fmtlen++] = (char)c;
         }
-    }
-#endif
-
-    fmtlen = time_strlen(fmt);
-
-    /* I hate these functions that presume you know how big the output
-     * will be ahead of time...
-     */
-    for (i = 1024; ; i += i) {
-        outbuf = (time_char *)PyMem_Malloc(i*sizeof(time_char));
-        if (outbuf == NULL) {
-            PyErr_NoMemory();
-            break;
+        if (fmtlen) {
+            format[fmtlen] = 0;
+            PyObject *unicode = time_strftime1(&outbuf, &bufsize,
+                                               format, fmtlen, &buf);
+            if (unicode == NULL) {
+                goto error;
+            }
+            if (_PyUnicodeWriter_WriteStr(&writer, unicode) < 0) {
+                Py_DECREF(unicode);
+                goto error;
+            }
+            Py_DECREF(unicode);
         }
-#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
-        errno = 0;
-#endif
-        _Py_BEGIN_SUPPRESS_IPH
-        buflen = format_time(outbuf, i, fmt, &buf);
-        _Py_END_SUPPRESS_IPH
-#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
-        /* VisualStudio .NET 2005 does this properly */
-        if (buflen == 0 && errno == EINVAL) {
-            PyErr_SetString(PyExc_ValueError, "Invalid format string");
-            PyMem_Free(outbuf);
-            break;
+
+        Py_ssize_t start = i;
+        for (; i < format_size; i++) {
+            Py_UCS4 c = PyUnicode_READ_CHAR(format_arg, i);
+            if (c == '%') {
+                break;
+            }
         }
-#endif
-        if (buflen > 0 || i >= 256 * fmtlen) {
-            /* If the buffer is 256 times as long as the format,
-               it's probably not failing for lack of room!
-               More likely, the format yields an empty result,
-               e.g. an empty format, or %Z when the timezone
-               is unknown. */
-#ifdef HAVE_WCSFTIME
-            ret = PyUnicode_FromWideChar(outbuf, buflen);
-#else
-            ret = PyUnicode_DecodeLocaleAndSize(outbuf, buflen, "surrogateescape");
-#endif
-            PyMem_Free(outbuf);
-            break;
+        if (start < i) {
+            if (_PyUnicodeWriter_WriteSubstring(&writer, format_arg, start, i) < 0) {
+                goto error;
+            }
         }
-        PyMem_Free(outbuf);
     }
-#ifdef HAVE_WCSFTIME
+
+    PyMem_Free(outbuf);
     PyMem_Free(format);
-#else
-    Py_DECREF(format);
-#endif
-    return ret;
+    return _PyUnicodeWriter_Finish(&writer);
+error:
+    PyMem_Free(outbuf);
+    PyMem_Free(format);
+    _PyUnicodeWriter_Dealloc(&writer);
+    return NULL;
 }
 
 #undef time_char
@@ -1097,7 +1146,7 @@ time_mktime(PyObject *module, PyObject *tm_tuple)
 }
 
 PyDoc_STRVAR(mktime_doc,
-"mktime(tuple) -> floating point number\n\
+"mktime(tuple) -> floating-point number\n\
 \n\
 Convert a time tuple in local time to seconds since the Epoch.\n\
 Note that mktime(gmtime(0)) will not generally return zero for most\n\
@@ -1281,9 +1330,14 @@ py_process_time(time_module_state *state, PyTime_t *tp,
 
     /* clock_gettime */
 // gh-115714: Don't use CLOCK_PROCESS_CPUTIME_ID on WASI.
+/* CLOCK_PROF is defined on NetBSD, but not supported.
+ * CLOCK_PROCESS_CPUTIME_ID is broken on NetBSD for the same reason as
+ * CLOCK_THREAD_CPUTIME_ID (see comment below).
+ */
 #if defined(HAVE_CLOCK_GETTIME) \
     && (defined(CLOCK_PROCESS_CPUTIME_ID) || defined(CLOCK_PROF)) \
-    && !defined(__wasi__)
+    && !defined(__wasi__) \
+    && !defined(__NetBSD__)
     struct timespec ts;
 
     if (HAVE_CLOCK_GETTIME_RUNTIME) {
@@ -1476,9 +1530,16 @@ _PyTime_GetThreadTimeWithInfo(PyTime_t *tp, _Py_clock_info_t *info)
     return 0;
 }
 
+/* CLOCK_THREAD_CPUTIME_ID is broken on NetBSD: the result of clock_gettime()
+ * includes the sleeping time, that defeats the purpose of the clock.
+ * Also, clock_getres() does not support it.
+ * https://github.com/python/cpython/issues/123978
+ * https://gnats.netbsd.org/57512
+ */
 #elif defined(HAVE_CLOCK_GETTIME) && \
-      defined(CLOCK_PROCESS_CPUTIME_ID) && \
-      !defined(__EMSCRIPTEN__) && !defined(__wasi__)
+      defined(CLOCK_THREAD_CPUTIME_ID) && \
+      !defined(__EMSCRIPTEN__) && !defined(__wasi__) && \
+      !defined(__NetBSD__)
 #define HAVE_THREAD_TIME
 
 #if defined(__APPLE__) && defined(__has_attribute) && __has_attribute(availability)
@@ -1895,7 +1956,7 @@ PyDoc_STRVAR(module_doc,
 \n\
 There are two standard representations of time.  One is the number\n\
 of seconds since the Epoch, in UTC (a.k.a. GMT).  It may be an integer\n\
-or a floating point number (to represent fractions of seconds).\n\
+or a floating-point number (to represent fractions of seconds).\n\
 The epoch is the point where the time starts, the return value of time.gmtime(0).\n\
 It is January 1, 1970, 00:00:00 (UTC) on all platforms.\n\
 \n\
diff --git a/Objects/boolobject.c b/Objects/boolobject.c
index fb48dcbeca7850..a88a8ad0cfd560 100644
--- a/Objects/boolobject.c
+++ b/Objects/boolobject.c
@@ -71,8 +71,8 @@ static PyObject *
 bool_invert(PyObject *v)
 {
     if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "Bitwise inversion '~' on bool is deprecated. This "
-                     "returns the bitwise inversion of the underlying int "
+                     "Bitwise inversion '~' on bool is deprecated and will be removed in "
+                     "Python 3.16. This returns the bitwise inversion of the underlying int "
                      "object and is usually not what you expect from negating "
                      "a bool. Use the 'not' operator for boolean negation or "
                      "~int(x) if you really want the bitwise inversion of the "
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 80679f93cd4c13..a67f41bbfc7039 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -44,15 +44,15 @@ _getbytevalue(PyObject* arg, int *value)
 static int
 bytearray_getbuffer(PyByteArrayObject *obj, Py_buffer *view, int flags)
 {
-    void *ptr;
     if (view == NULL) {
         PyErr_SetString(PyExc_BufferError,
             "bytearray_getbuffer: view==NULL argument is obsolete");
         return -1;
     }
-    ptr = (void *) PyByteArray_AS_STRING(obj);
-    /* cannot fail if view != NULL and readonly == 0 */
-    (void)PyBuffer_FillInfo(view, (PyObject*)obj, ptr, Py_SIZE(obj), 0, flags);
+    void *ptr = (void *) PyByteArray_AS_STRING(obj);
+    if (PyBuffer_FillInfo(view, (PyObject*)obj, ptr, Py_SIZE(obj), 0, flags) < 0) {
+        return -1;
+    }
     obj->ob_exports++;
     return 0;
 }
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index cd799a926ae63c..32cb9966ff1ae4 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -46,7 +46,7 @@ Py_LOCAL_INLINE(Py_ssize_t) _PyBytesWriter_GetSize(_PyBytesWriter *writer,
 static inline PyObject* bytes_get_empty(void)
 {
     PyObject *empty = &EMPTY->ob_base.ob_base;
-    assert(_Py_IsImmortal(empty));
+    assert(_Py_IsImmortalLoose(empty));
     return empty;
 }
 
@@ -119,7 +119,7 @@ PyBytes_FromStringAndSize(const char *str, Py_ssize_t size)
     }
     if (size == 1 && str != NULL) {
         op = CHARACTER(*str & 255);
-        assert(_Py_IsImmortal(op));
+        assert(_Py_IsImmortalLoose(op));
         return (PyObject *)op;
     }
     if (size == 0) {
@@ -155,7 +155,7 @@ PyBytes_FromString(const char *str)
     }
     else if (size == 1) {
         op = CHARACTER(*str & 255);
-        assert(_Py_IsImmortal(op));
+        assert(_Py_IsImmortalLoose(op));
         return (PyObject *)op;
     }
 
@@ -3171,6 +3171,7 @@ _PyBytes_Resize(PyObject **pv, Py_ssize_t newsize)
 #ifdef Py_TRACE_REFS
     _Py_ForgetReference(v);
 #endif
+    _PyReftracerTrack(v, PyRefTracer_DESTROY);
     *pv = (PyObject *)
         PyObject_Realloc(v, PyBytesObject_SIZE + newsize);
     if (*pv == NULL) {
diff --git a/Objects/capsule.c b/Objects/capsule.c
index 555979dab2b789..28965e0f21b7a0 100644
--- a/Objects/capsule.c
+++ b/Objects/capsule.c
@@ -317,10 +317,14 @@ static int
 capsule_traverse(PyCapsule *capsule, visitproc visit, void *arg)
 {
     // Capsule object is only tracked by the GC
-    // if _PyCapsule_SetTraverse() is called
-    assert(capsule->traverse_func != NULL);
+    // if _PyCapsule_SetTraverse() is called, but
+    // this can still be manually triggered by gc.get_referents()
+
+    if (capsule->traverse_func != NULL) {
+        return capsule->traverse_func((PyObject*)capsule, visit, arg);
+    }
 
-    return capsule->traverse_func((PyObject*)capsule, visit, arg);
+    return 0;
 }
 
 
diff --git a/Objects/clinic/complexobject.c.h b/Objects/clinic/complexobject.c.h
index 49b50304021f7b..46c3b352562445 100644
--- a/Objects/clinic/complexobject.c.h
+++ b/Objects/clinic/complexobject.c.h
@@ -94,9 +94,12 @@ PyDoc_STRVAR(complex_new__doc__,
 "complex(real=0, imag=0)\n"
 "--\n"
 "\n"
-"Create a complex number from a real part and an optional imaginary part.\n"
+"Create a complex number from a string or numbers.\n"
 "\n"
-"This is equivalent to (real + imag*1j) where imag defaults to 0.");
+"If a string is given, parse it as a complex number.\n"
+"If a single number is given, convert it to a complex number.\n"
+"If the \'real\' or \'imag\' arguments are given, create a complex number\n"
+"with the specified real and imaginary components.");
 
 static PyObject *
 complex_new_impl(PyTypeObject *type, PyObject *r, PyObject *i);
@@ -157,4 +160,4 @@ complex_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=04e6261649967b30 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=295ecfd71389d7fe input=a9049054013a1b77]*/
diff --git a/Objects/clinic/floatobject.c.h b/Objects/clinic/floatobject.c.h
index 10f6149cc88c22..d104b071890a34 100644
--- a/Objects/clinic/floatobject.c.h
+++ b/Objects/clinic/floatobject.c.h
@@ -197,7 +197,7 @@ PyDoc_STRVAR(float_new__doc__,
 "float(x=0, /)\n"
 "--\n"
 "\n"
-"Convert a string or number to a floating point number, if possible.");
+"Convert a string or number to a floating-point number, if possible.");
 
 static PyObject *
 float_new_impl(PyTypeObject *type, PyObject *x);
@@ -256,7 +256,7 @@ PyDoc_STRVAR(float___getformat____doc__,
 "It exists mainly to be used in Python\'s test suite.\n"
 "\n"
 "This function returns whichever of \'unknown\', \'IEEE, big-endian\' or \'IEEE,\n"
-"little-endian\' best describes the format of floating point numbers used by the\n"
+"little-endian\' best describes the format of floating-point numbers used by the\n"
 "C type named by typestr.");
 
 #define FLOAT___GETFORMAT___METHODDEF    \
@@ -318,4 +318,4 @@ float___format__(PyObject *self, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=c79743c8551c30d9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d8bbcd83977d516f input=a9049054013a1b77]*/
diff --git a/Objects/codeobject.c b/Objects/codeobject.c
index 3d804f73a54088..6c4eef8e0116a3 100644
--- a/Objects/codeobject.c
+++ b/Objects/codeobject.c
@@ -110,7 +110,7 @@ should_intern_string(PyObject *o)
     // unless we've disabled immortalizing objects that use deferred reference
     // counting.
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (interp->gc.immortalize.enable_on_thread_created) {
+    if (_Py_atomic_load_int(&interp->gc.immortalize) < 0) {
         return 1;
     }
 #endif
@@ -137,6 +137,7 @@ static PyObject *intern_one_constant(PyObject *op);
 static int
 intern_strings(PyObject *tuple)
 {
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     Py_ssize_t i;
 
     for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
@@ -146,7 +147,7 @@ intern_strings(PyObject *tuple)
                             "non-string found in code slot");
             return -1;
         }
-        PyUnicode_InternInPlace(&_PyTuple_ITEMS(tuple)[i]);
+        _PyUnicode_InternImmortal(interp, &_PyTuple_ITEMS(tuple)[i]);
     }
     return 0;
 }
@@ -157,12 +158,13 @@ intern_strings(PyObject *tuple)
 static int
 intern_constants(PyObject *tuple, int *modified)
 {
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     for (Py_ssize_t i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
         PyObject *v = PyTuple_GET_ITEM(tuple, i);
         if (PyUnicode_CheckExact(v)) {
             if (should_intern_string(v)) {
                 PyObject *w = v;
-                PyUnicode_InternInPlace(&v);
+                _PyUnicode_InternMortal(interp, &v);
                 if (w != v) {
                     PyTuple_SET_ITEM(tuple, i, v);
                     if (modified) {
@@ -240,7 +242,7 @@ intern_constants(PyObject *tuple, int *modified)
         PyThreadState *tstate = PyThreadState_GET();
         if (!_Py_IsImmortal(v) && !PyCode_Check(v) &&
             !PyUnicode_CheckExact(v) &&
-            tstate->interp->gc.immortalize.enable_on_thread_created)
+            _Py_atomic_load_int(&tstate->interp->gc.immortalize) >= 0)
         {
             PyObject *interned = intern_one_constant(v);
             if (interned == NULL) {
@@ -302,21 +304,32 @@ validate_and_copy_tuple(PyObject *tup)
 }
 
 static int
-init_co_cached(PyCodeObject *self) {
-    if (self->_co_cached == NULL) {
-        self->_co_cached = PyMem_New(_PyCoCached, 1);
-        if (self->_co_cached == NULL) {
+init_co_cached(PyCodeObject *self)
+{
+    _PyCoCached *cached = FT_ATOMIC_LOAD_PTR(self->_co_cached);
+    if (cached != NULL) {
+        return 0;
+    }
+
+    Py_BEGIN_CRITICAL_SECTION(self);
+    cached = self->_co_cached;
+    if (cached == NULL) {
+        cached = PyMem_New(_PyCoCached, 1);
+        if (cached == NULL) {
             PyErr_NoMemory();
-            return -1;
         }
-        self->_co_cached->_co_code = NULL;
-        self->_co_cached->_co_cellvars = NULL;
-        self->_co_cached->_co_freevars = NULL;
-        self->_co_cached->_co_varnames = NULL;
+        else {
+            cached->_co_code = NULL;
+            cached->_co_cellvars = NULL;
+            cached->_co_freevars = NULL;
+            cached->_co_varnames = NULL;
+            FT_ATOMIC_STORE_PTR(self->_co_cached, cached);
+        }
     }
-    return 0;
-
+    Py_END_CRITICAL_SECTION();
+    return cached != NULL ? 0 : -1;
 }
+
 /******************
  * _PyCode_New()
  ******************/
@@ -458,12 +471,13 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
         con->stacksize = 1;
     }
 
+    PyInterpreterState *interp = _PyInterpreterState_GET();
     co->co_filename = Py_NewRef(con->filename);
     co->co_name = Py_NewRef(con->name);
     co->co_qualname = Py_NewRef(con->qualname);
-    PyUnicode_InternInPlace(&co->co_filename);
-    PyUnicode_InternInPlace(&co->co_name);
-    PyUnicode_InternInPlace(&co->co_qualname);
+    _PyUnicode_InternMortal(interp, &co->co_filename);
+    _PyUnicode_InternMortal(interp, &co->co_name);
+    _PyUnicode_InternMortal(interp, &co->co_qualname);
     co->co_flags = con->flags;
 
     co->co_firstlineno = con->firstlineno;
@@ -489,7 +503,6 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
     co->co_framesize = nlocalsplus + con->stacksize + FRAME_SPECIALS_SIZE;
     co->co_ncellvars = ncellvars;
     co->co_nfreevars = nfreevars;
-    PyInterpreterState *interp = _PyInterpreterState_GET();
 #ifdef Py_GIL_DISABLED
     PyMutex_Lock(&interp->func_state.mutex);
 #endif
@@ -1542,16 +1555,21 @@ get_cached_locals(PyCodeObject *co, PyObject **cached_field,
 {
     assert(cached_field != NULL);
     assert(co->_co_cached != NULL);
-    if (*cached_field != NULL) {
-        return Py_NewRef(*cached_field);
+    PyObject *varnames = FT_ATOMIC_LOAD_PTR(*cached_field);
+    if (varnames != NULL) {
+        return Py_NewRef(varnames);
     }
-    assert(*cached_field == NULL);
-    PyObject *varnames = get_localsplus_names(co, kind, num);
+
+    Py_BEGIN_CRITICAL_SECTION(co);
+    varnames = *cached_field;
     if (varnames == NULL) {
-        return NULL;
+        varnames = get_localsplus_names(co, kind, num);
+        if (varnames != NULL) {
+            FT_ATOMIC_STORE_PTR(*cached_field, varnames);
+        }
     }
-    *cached_field = Py_NewRef(varnames);
-    return varnames;
+    Py_END_CRITICAL_SECTION();
+    return Py_XNewRef(varnames);
 }
 
 PyObject *
@@ -1650,18 +1668,26 @@ _PyCode_GetCode(PyCodeObject *co)
     if (init_co_cached(co)) {
         return NULL;
     }
-    if (co->_co_cached->_co_code != NULL) {
-        return Py_NewRef(co->_co_cached->_co_code);
+
+    _PyCoCached *cached = co->_co_cached;
+    PyObject *code = FT_ATOMIC_LOAD_PTR(cached->_co_code);
+    if (code != NULL) {
+        return Py_NewRef(code);
     }
-    PyObject *code = PyBytes_FromStringAndSize((const char *)_PyCode_CODE(co),
-                                               _PyCode_NBYTES(co));
+
+    Py_BEGIN_CRITICAL_SECTION(co);
+    code = cached->_co_code;
     if (code == NULL) {
-        return NULL;
+        code = PyBytes_FromStringAndSize((const char *)_PyCode_CODE(co),
+                                         _PyCode_NBYTES(co));
+        if (code != NULL) {
+            deopt_code(co, (_Py_CODEUNIT *)PyBytes_AS_STRING(code));
+            assert(cached->_co_code == NULL);
+            FT_ATOMIC_STORE_PTR(cached->_co_code, code);
+        }
     }
-    deopt_code(co, (_Py_CODEUNIT *)PyBytes_AS_STRING(code));
-    assert(co->_co_cached->_co_code == NULL);
-    co->_co_cached->_co_code = Py_NewRef(code);
-    return code;
+    Py_END_CRITICAL_SECTION();
+    return Py_XNewRef(code);
 }
 
 PyObject *
@@ -1819,14 +1845,11 @@ free_monitoring_data(_PyCoMonitoringData *data)
 static void
 code_dealloc(PyCodeObject *co)
 {
-    assert(Py_REFCNT(co) == 0);
-    Py_SET_REFCNT(co, 1);
+    _PyObject_ResurrectStart((PyObject *)co);
     notify_code_watchers(PY_CODE_EVENT_DESTROY, co);
-    if (Py_REFCNT(co) > 1) {
-        Py_SET_REFCNT(co, Py_REFCNT(co) - 1);
+    if (_PyObject_ResurrectEnd((PyObject *)co)) {
         return;
     }
-    Py_SET_REFCNT(co, 0);
 
 #ifdef Py_GIL_DISABLED
     PyObject_GC_UnTrack(co);
@@ -2020,7 +2043,7 @@ code_hash(PyCodeObject *co)
     Py_uhash_t uhash = 20221211;
     #define SCRAMBLE_IN(H) do {       \
         uhash ^= (Py_uhash_t)(H);     \
-        uhash *= _PyHASH_MULTIPLIER;  \
+        uhash *= PyHASH_MULTIPLIER;  \
     } while (0)
     #define SCRAMBLE_IN_HASH(EXPR) do {     \
         Py_hash_t h = PyObject_Hash(EXPR);  \
diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index d8b0e84da5df4a..502b4a9a96119e 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -147,7 +147,7 @@ _Py_c_pow(Py_complex a, Py_complex b)
         at = atan2(a.imag, a.real);
         phase = at*b.real;
         if (b.imag != 0.0) {
-            len /= exp(at*b.imag);
+            len *= exp(-at*b.imag);
             phase += b.imag*log(vabs);
         }
         r.real = len*cos(phase);
@@ -911,14 +911,17 @@ complex.__new__ as complex_new
     real as r: object(c_default="NULL") = 0
     imag as i: object(c_default="NULL") = 0
 
-Create a complex number from a real part and an optional imaginary part.
+Create a complex number from a string or numbers.
 
-This is equivalent to (real + imag*1j) where imag defaults to 0.
+If a string is given, parse it as a complex number.
+If a single number is given, convert it to a complex number.
+If the 'real' or 'imag' arguments are given, create a complex number
+with the specified real and imaginary components.
 [clinic start generated code]*/
 
 static PyObject *
 complex_new_impl(PyTypeObject *type, PyObject *r, PyObject *i)
-/*[clinic end generated code: output=b6c7dd577b537dc1 input=f4c667f2596d4fd1]*/
+/*[clinic end generated code: output=b6c7dd577b537dc1 input=ff4268dc540958a4]*/
 {
     PyObject *tmp;
     PyNumberMethods *nbr, *nbi = NULL;
diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 1b7e2fde3ceccd..4eccd1704eb95a 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -1859,22 +1859,9 @@ property_init_impl(propertyobject *self, PyObject *fget, PyObject *fset,
     /* if no docstring given and the getter has one, use that one */
     else if (fget != NULL) {
         int rc = PyObject_GetOptionalAttr(fget, &_Py_ID(__doc__), &prop_doc);
-        if (rc <= 0) {
+        if (rc < 0) {
             return rc;
         }
-        if (!Py_IS_TYPE(self, &PyProperty_Type) &&
-            prop_doc != NULL && prop_doc != Py_None) {
-            // This oddity preserves the long existing behavior of surfacing
-            // an AttributeError when using a dict-less (__slots__) property
-            // subclass as a decorator on a getter method with a docstring.
-            // See PropertySubclassTest.test_slots_docstring_copy_exception.
-            int err = PyObject_SetAttr(
-                        (PyObject *)self, &_Py_ID(__doc__), prop_doc);
-            if (err < 0) {
-                Py_DECREF(prop_doc);  // release our new reference.
-                return -1;
-            }
-        }
         if (prop_doc == Py_None) {
             prop_doc = NULL;
             Py_DECREF(Py_None);
@@ -1902,7 +1889,9 @@ property_init_impl(propertyobject *self, PyObject *fget, PyObject *fset,
         Py_DECREF(prop_doc);
         if (err < 0) {
             assert(PyErr_Occurred());
-            if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+            if (!self->getter_doc &&
+                PyErr_ExceptionMatches(PyExc_AttributeError))
+            {
                 PyErr_Clear();
                 // https://github.com/python/cpython/issues/98963#issuecomment-1574413319
                 // Python silently dropped this doc assignment through 3.11.
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index b0fce09d7940e0..ff16a41b9a5d4e 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -154,22 +154,30 @@ ASSERT_DICT_LOCKED(PyObject *op)
     _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op);
 }
 #define ASSERT_DICT_LOCKED(op) ASSERT_DICT_LOCKED(_Py_CAST(PyObject*, op))
+#define ASSERT_WORLD_STOPPED_OR_DICT_LOCKED(op)                         \
+    if (!_PyInterpreterState_GET()->stoptheworld.world_stopped) {       \
+        ASSERT_DICT_LOCKED(op);                                         \
+    }
+#define ASSERT_WORLD_STOPPED_OR_OBJ_LOCKED(op)                         \
+    if (!_PyInterpreterState_GET()->stoptheworld.world_stopped) {      \
+        _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(op);                 \
+    }
+
 #define IS_DICT_SHARED(mp) _PyObject_GC_IS_SHARED(mp)
 #define SET_DICT_SHARED(mp) _PyObject_GC_SET_SHARED(mp)
 #define LOAD_INDEX(keys, size, idx) _Py_atomic_load_int##size##_relaxed(&((const int##size##_t*)keys->dk_indices)[idx]);
 #define STORE_INDEX(keys, size, idx, value) _Py_atomic_store_int##size##_relaxed(&((int##size##_t*)keys->dk_indices)[idx], (int##size##_t)value);
 #define ASSERT_OWNED_OR_SHARED(mp) \
     assert(_Py_IsOwnedByCurrentThread((PyObject *)mp) || IS_DICT_SHARED(mp));
-#define LOAD_KEYS_NENTRIES(d)
 
 #define LOCK_KEYS_IF_SPLIT(keys, kind) \
         if (kind == DICT_KEYS_SPLIT) { \
-            LOCK_KEYS(dk);             \
+            LOCK_KEYS(keys);           \
         }
 
 #define UNLOCK_KEYS_IF_SPLIT(keys, kind) \
         if (kind == DICT_KEYS_SPLIT) {   \
-            UNLOCK_KEYS(dk);             \
+            UNLOCK_KEYS(keys);           \
         }
 
 static inline Py_ssize_t
@@ -203,7 +211,7 @@ set_values(PyDictObject *mp, PyDictValues *values)
 #define INCREF_KEYS(dk)  _Py_atomic_add_ssize(&dk->dk_refcnt, 1)
 // Dec refs the keys object, giving the previous value
 #define DECREF_KEYS(dk)  _Py_atomic_add_ssize(&dk->dk_refcnt, -1)
-#define LOAD_KEYS_NENTIRES(keys) _Py_atomic_load_ssize_relaxed(&keys->dk_nentries)
+#define LOAD_KEYS_NENTRIES(keys) _Py_atomic_load_ssize_relaxed(&keys->dk_nentries)
 
 #define INCREF_KEYS_FT(dk) dictkeys_incref(dk)
 #define DECREF_KEYS_FT(dk, shared) dictkeys_decref(_PyInterpreterState_GET(), dk, shared)
@@ -221,6 +229,8 @@ static inline void split_keys_entry_added(PyDictKeysObject *keys)
 #else /* Py_GIL_DISABLED */
 
 #define ASSERT_DICT_LOCKED(op)
+#define ASSERT_WORLD_STOPPED_OR_DICT_LOCKED(op)
+#define ASSERT_WORLD_STOPPED_OR_OBJ_LOCKED(op)
 #define LOCK_KEYS(keys)
 #define UNLOCK_KEYS(keys)
 #define ASSERT_KEYS_LOCKED(keys)
@@ -228,7 +238,7 @@ static inline void split_keys_entry_added(PyDictKeysObject *keys)
 #define STORE_SHARED_KEY(key, value) key = value
 #define INCREF_KEYS(dk)  dk->dk_refcnt++
 #define DECREF_KEYS(dk)  dk->dk_refcnt--
-#define LOAD_KEYS_NENTIRES(keys) keys->dk_nentries
+#define LOAD_KEYS_NENTRIES(keys) keys->dk_nentries
 #define INCREF_KEYS_FT(dk)
 #define DECREF_KEYS_FT(dk, shared)
 #define LOCK_KEYS_IF_SPLIT(keys, kind)
@@ -427,7 +437,7 @@ static inline Py_hash_t
 unicode_get_hash(PyObject *o)
 {
     assert(PyUnicode_CheckExact(o));
-    return _PyASCIIObject_CAST(o)->hash;
+    return FT_ATOMIC_LOAD_SSIZE_RELAXED(_PyASCIIObject_CAST(o)->hash);
 }
 
 /* Print summary info about the state of the optimized allocator */
@@ -473,7 +483,7 @@ dictkeys_decref(PyInterpreterState *interp, PyDictKeysObject *dk, bool use_qsbr)
     if (FT_ATOMIC_LOAD_SSIZE_RELAXED(dk->dk_refcnt) == _Py_IMMORTAL_REFCNT) {
         return;
     }
-    assert(dk->dk_refcnt > 0);
+    assert(FT_ATOMIC_LOAD_SSIZE(dk->dk_refcnt) > 0);
 #ifdef Py_REF_DEBUG
     _Py_DecRefTotal(_PyThreadState_GET());
 #endif
@@ -614,11 +624,14 @@ estimate_log2_keysize(Py_ssize_t n)
 
 /* This immutable, empty PyDictKeysObject is used for PyDict_Clear()
  * (which cannot fail and thus can do no allocation).
+ *
+ * See https://github.com/python/cpython/pull/127568#discussion_r1868070614
+ * for the rationale of using dk_log2_index_bytes=3 instead of 0.
  */
 static PyDictKeysObject empty_keys_struct = {
         _Py_IMMORTAL_REFCNT, /* dk_refcnt */
         0, /* dk_log2_size */
-        0, /* dk_log2_index_bytes */
+        3, /* dk_log2_index_bytes */
         DICT_KEYS_UNICODE, /* dk_kind */
 #ifdef Py_GIL_DISABLED
         {0}, /* dk_mutex */
@@ -670,6 +683,8 @@ dump_entries(PyDictKeysObject *dk)
 int
 _PyDict_CheckConsistency(PyObject *op, int check_content)
 {
+    ASSERT_WORLD_STOPPED_OR_DICT_LOCKED(op);
+
 #define CHECK(expr) \
     do { if (!(expr)) { _PyObject_ASSERT_FAILED_MSG(op, Py_STRINGIFY(expr)); } } while (0)
 
@@ -681,10 +696,15 @@ _PyDict_CheckConsistency(PyObject *op, int check_content)
     int splitted = _PyDict_HasSplitTable(mp);
     Py_ssize_t usable = USABLE_FRACTION(DK_SIZE(keys));
 
+    // In the free-threaded build, shared keys may be concurrently modified,
+    // so use atomic loads.
+    Py_ssize_t dk_usable = FT_ATOMIC_LOAD_SSIZE_ACQUIRE(keys->dk_usable);
+    Py_ssize_t dk_nentries = FT_ATOMIC_LOAD_SSIZE_ACQUIRE(keys->dk_nentries);
+
     CHECK(0 <= mp->ma_used && mp->ma_used <= usable);
-    CHECK(0 <= keys->dk_usable && keys->dk_usable <= usable);
-    CHECK(0 <= keys->dk_nentries && keys->dk_nentries <= usable);
-    CHECK(keys->dk_usable + keys->dk_nentries <= usable);
+    CHECK(0 <= dk_usable && dk_usable <= usable);
+    CHECK(0 <= dk_nentries && dk_nentries <= usable);
+    CHECK(dk_usable + dk_nentries <= usable);
 
     if (!splitted) {
         /* combined table */
@@ -701,6 +721,7 @@ _PyDict_CheckConsistency(PyObject *op, int check_content)
     }
 
     if (check_content) {
+        LOCK_KEYS_IF_SPLIT(keys, keys->dk_kind);
         for (Py_ssize_t i=0; i < DK_SIZE(keys); i++) {
             Py_ssize_t ix = dictkeys_get_index(keys, i);
             CHECK(DKIX_DUMMY <= ix && ix <= usable);
@@ -756,6 +777,7 @@ _PyDict_CheckConsistency(PyObject *op, int check_content)
                 CHECK(mp->ma_values->values[index] != NULL);
             }
         }
+        UNLOCK_KEYS_IF_SPLIT(keys, keys->dk_kind);
     }
     return 1;
 
@@ -1031,7 +1053,7 @@ lookdict_index(PyDictKeysObject *k, Py_hash_t hash, Py_ssize_t index)
 
 static inline Py_ALWAYS_INLINE Py_ssize_t
 do_lookup(PyDictObject *mp, PyDictKeysObject *dk, PyObject *key, Py_hash_t hash,
-          Py_ssize_t (*check_lookup)(PyDictObject *, PyDictKeysObject *, void *, Py_ssize_t ix, PyObject *key, Py_hash_t))
+          int (*check_lookup)(PyDictObject *, PyDictKeysObject *, void *, Py_ssize_t ix, PyObject *key, Py_hash_t))
 {
     void *ep0 = _DK_ENTRIES(dk);
     size_t mask = DK_MASK(dk);
@@ -1041,7 +1063,7 @@ do_lookup(PyDictObject *mp, PyDictKeysObject *dk, PyObject *key, Py_hash_t hash,
     for (;;) {
         ix = dictkeys_get_index(dk, i);
         if (ix >= 0) {
-            Py_ssize_t cmp = check_lookup(mp, dk, ep0, ix, key, hash);
+            int cmp = check_lookup(mp, dk, ep0, ix, key, hash);
             if (cmp < 0) {
                 return cmp;
             } else if (cmp) {
@@ -1057,7 +1079,7 @@ do_lookup(PyDictObject *mp, PyDictKeysObject *dk, PyObject *key, Py_hash_t hash,
         // Manual loop unrolling
         ix = dictkeys_get_index(dk, i);
         if (ix >= 0) {
-            Py_ssize_t cmp = check_lookup(mp, dk, ep0, ix, key, hash);
+            int cmp = check_lookup(mp, dk, ep0, ix, key, hash);
             if (cmp < 0) {
                 return cmp;
             } else if (cmp) {
@@ -1073,7 +1095,7 @@ do_lookup(PyDictObject *mp, PyDictKeysObject *dk, PyObject *key, Py_hash_t hash,
     Py_UNREACHABLE();
 }
 
-static inline Py_ALWAYS_INLINE Py_ssize_t
+static inline int
 compare_unicode_generic(PyDictObject *mp, PyDictKeysObject *dk,
                         void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
@@ -1108,7 +1130,7 @@ unicodekeys_lookup_generic(PyDictObject *mp, PyDictKeysObject* dk, PyObject *key
     return do_lookup(mp, dk, key, hash, compare_unicode_generic);
 }
 
-static inline Py_ALWAYS_INLINE Py_ssize_t
+static inline int
 compare_unicode_unicode(PyDictObject *mp, PyDictKeysObject *dk,
                         void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
@@ -1129,7 +1151,7 @@ unicodekeys_lookup_unicode(PyDictKeysObject* dk, PyObject *key, Py_hash_t hash)
     return do_lookup(NULL, dk, key, hash, compare_unicode_unicode);
 }
 
-static inline Py_ALWAYS_INLINE Py_ssize_t
+static inline int
 compare_generic(PyDictObject *mp, PyDictKeysObject *dk,
                 void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
@@ -1324,8 +1346,8 @@ ensure_shared_on_resize(PyDictObject *mp)
 
 #ifdef Py_GIL_DISABLED
 
-static inline Py_ALWAYS_INLINE
-Py_ssize_t compare_unicode_generic_threadsafe(PyDictObject *mp, PyDictKeysObject *dk,
+static inline Py_ALWAYS_INLINE int
+compare_unicode_generic_threadsafe(PyDictObject *mp, PyDictKeysObject *dk,
                                    void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
     PyDictUnicodeEntry *ep = &((PyDictUnicodeEntry *)ep0)[ix];
@@ -1367,7 +1389,7 @@ unicodekeys_lookup_generic_threadsafe(PyDictObject *mp, PyDictKeysObject* dk, Py
     return do_lookup(mp, dk, key, hash, compare_unicode_generic_threadsafe);
 }
 
-static inline Py_ALWAYS_INLINE Py_ssize_t
+static inline Py_ALWAYS_INLINE int
 compare_unicode_unicode_threadsafe(PyDictObject *mp, PyDictKeysObject *dk,
                                    void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
@@ -1401,8 +1423,8 @@ unicodekeys_lookup_unicode_threadsafe(PyDictKeysObject* dk, PyObject *key, Py_ha
     return do_lookup(NULL, dk, key, hash, compare_unicode_unicode_threadsafe);
 }
 
-static inline Py_ALWAYS_INLINE
-Py_ssize_t compare_generic_threadsafe(PyDictObject *mp, PyDictKeysObject *dk,
+static inline Py_ALWAYS_INLINE int
+compare_generic_threadsafe(PyDictObject *mp, PyDictKeysObject *dk,
                            void *ep0, Py_ssize_t ix, PyObject *key, Py_hash_t hash)
 {
     PyDictKeyEntry *ep = &((PyDictKeyEntry *)ep0)[ix];
@@ -1530,7 +1552,7 @@ _Py_dict_lookup_threadsafe(PyDictObject *mp, PyObject *key, Py_hash_t hash, PyOb
     *value_addr = value;
     if (value != NULL) {
         assert(ix >= 0);
-        Py_INCREF(value);
+        _Py_NewRefWithLock(value);
     }
     Py_END_CRITICAL_SECTION();
     return ix;
@@ -1580,6 +1602,8 @@ _PyDict_MaybeUntrack(PyObject *op)
     PyObject *value;
     Py_ssize_t i, numentries;
 
+    ASSERT_WORLD_STOPPED_OR_DICT_LOCKED(op);
+
     if (!PyDict_CheckExact(op) || !_PyObject_GC_IS_TRACKED(op))
         return;
 
@@ -1665,6 +1689,10 @@ insert_combined_dict(PyInterpreterState *interp, PyDictObject *mp,
         }
     }
 
+    uint64_t new_version = _PyDict_NotifyEvent(
+        interp, PyDict_EVENT_ADDED, mp, key, value);
+    mp->ma_keys->dk_version = 0;
+
     Py_ssize_t hashpos = find_empty_slot(mp->ma_keys, hash);
     dictkeys_set_index(mp->ma_keys, hashpos, mp->ma_keys->dk_nentries);
 
@@ -1681,6 +1709,7 @@ insert_combined_dict(PyInterpreterState *interp, PyDictObject *mp,
         STORE_VALUE(ep, value);
         STORE_HASH(ep, hash);
     }
+    mp->ma_version_tag = new_version;
     STORE_KEYS_USABLE(mp->ma_keys, mp->ma_keys->dk_usable - 1);
     STORE_KEYS_NENTRIES(mp->ma_keys, mp->ma_keys->dk_nentries + 1);
     assert(mp->ma_keys->dk_usable >= 0);
@@ -1722,19 +1751,22 @@ static void
 insert_split_value(PyInterpreterState *interp, PyDictObject *mp, PyObject *key, PyObject *value, Py_ssize_t ix)
 {
     assert(PyUnicode_CheckExact(key));
+    ASSERT_DICT_LOCKED(mp);
     MAINTAIN_TRACKING(mp, key, value);
     PyObject *old_value = mp->ma_values->values[ix];
     if (old_value == NULL) {
         uint64_t new_version = _PyDict_NotifyEvent(interp, PyDict_EVENT_ADDED, mp, key, value);
         STORE_SPLIT_VALUE(mp, ix, Py_NewRef(value));
         _PyDictValues_AddToInsertionOrder(mp->ma_values, ix);
-        mp->ma_used++;
+        STORE_USED(mp, mp->ma_used + 1);
         mp->ma_version_tag = new_version;
     }
     else {
         uint64_t new_version = _PyDict_NotifyEvent(interp, PyDict_EVENT_MODIFIED, mp, key, value);
         STORE_SPLIT_VALUE(mp, ix, Py_NewRef(value));
         mp->ma_version_tag = new_version;
+        // old_value should be DECREFed after GC track checking is done, if not, it could raise a segmentation fault,
+        // when dict only holds the strong reference to value in ep->me_value.
         Py_DECREF(old_value);
     }
     ASSERT_CONSISTENT(mp);
@@ -1783,16 +1815,12 @@ insertdict(PyInterpreterState *interp, PyDictObject *mp,
 
     if (ix == DKIX_EMPTY) {
         assert(!_PyDict_HasSplitTable(mp));
-        uint64_t new_version = _PyDict_NotifyEvent(
-                interp, PyDict_EVENT_ADDED, mp, key, value);
         /* Insert into new slot. */
-        mp->ma_keys->dk_version = 0;
         assert(old_value == NULL);
         if (insert_combined_dict(interp, mp, hash, key, value) < 0) {
             goto Fail;
         }
-        mp->ma_version_tag = new_version;
-        mp->ma_used++;
+        STORE_USED(mp, mp->ma_used + 1);
         ASSERT_CONSISTENT(mp);
         return 0;
     }
@@ -1832,9 +1860,6 @@ insert_to_emptydict(PyInterpreterState *interp, PyDictObject *mp,
     assert(mp->ma_keys == Py_EMPTY_KEYS);
     ASSERT_DICT_LOCKED(mp);
 
-    uint64_t new_version = _PyDict_NotifyEvent(
-            interp, PyDict_EVENT_ADDED, mp, key, value);
-
     int unicode = PyUnicode_CheckExact(key);
     PyDictKeysObject *newkeys = new_keys_object(
             interp, PyDict_LOG_MINSIZE, unicode);
@@ -1843,6 +1868,9 @@ insert_to_emptydict(PyInterpreterState *interp, PyDictObject *mp,
         Py_DECREF(value);
         return -1;
     }
+    uint64_t new_version = _PyDict_NotifyEvent(
+            interp, PyDict_EVENT_ADDED, mp, key, value);
+
     /* We don't decref Py_EMPTY_KEYS here because it is immortal. */
     assert(mp->ma_values == NULL);
 
@@ -1861,7 +1889,7 @@ insert_to_emptydict(PyInterpreterState *interp, PyDictObject *mp,
         ep->me_hash = hash;
         STORE_VALUE(ep, value);
     }
-    FT_ATOMIC_STORE_SSIZE_RELAXED(mp->ma_used, FT_ATOMIC_LOAD_SSIZE_RELAXED(mp->ma_used) + 1);
+    STORE_USED(mp, mp->ma_used + 1);
     mp->ma_version_tag = new_version;
     newkeys->dk_usable--;
     newkeys->dk_nentries++;
@@ -1870,11 +1898,7 @@ insert_to_emptydict(PyInterpreterState *interp, PyDictObject *mp,
     // the case where we're inserting from the non-owner thread.  We don't use
     // set_keys here because the transition from empty to non-empty is safe
     // as the empty keys will never be freed.
-#ifdef Py_GIL_DISABLED
-    _Py_atomic_store_ptr_release(&mp->ma_keys, newkeys);
-#else
-    mp->ma_keys = newkeys;
-#endif
+    FT_ATOMIC_STORE_PTR_RELEASE(mp->ma_keys, newkeys);
     return 0;
 }
 
@@ -2003,7 +2027,7 @@ dictresize(PyInterpreterState *interp, PyDictObject *mp,
         if (oldvalues->embedded) {
             assert(oldvalues->embedded == 1);
             assert(oldvalues->valid == 1);
-            oldvalues->valid = 0;
+            FT_ATOMIC_STORE_UINT8(oldvalues->valid, 0);
         }
         else {
             free_values(oldvalues, IS_DICT_SHARED(mp));
@@ -2170,13 +2194,10 @@ dict_getitem(PyObject *op, PyObject *key, const char *warnmsg)
     }
     PyDictObject *mp = (PyDictObject *)op;
 
-    Py_hash_t hash;
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            PyErr_FormatUnraisable(warnmsg);
-            return NULL;
-        }
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        PyErr_FormatUnraisable(warnmsg);
+        return NULL;
     }
 
     PyThreadState *tstate = _PyThreadState_GET();
@@ -2225,12 +2246,9 @@ _PyDict_LookupIndex(PyDictObject *mp, PyObject *key)
     assert(PyDict_CheckExact((PyObject*)mp));
     assert(PyUnicode_CheckExact(key));
 
-    Py_hash_t hash = unicode_get_hash(key);
+    Py_hash_t hash = _PyObject_HashFast(key);
     if (hash == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            return -1;
-        }
+        return -1;
     }
 
     return _Py_dict_lookup(mp, key, hash, &value);
@@ -2262,6 +2280,29 @@ _PyDict_GetItem_KnownHash(PyObject *op, PyObject *key, Py_hash_t hash)
     return value;  // borrowed reference
 }
 
+/* Gets an item and provides a new reference if the value is present.
+ * Returns 1 if the key is present, 0 if the key is missing, and -1 if an
+ * exception occurred.
+*/
+int
+_PyDict_GetItemRef_KnownHash_LockHeld(PyDictObject *op, PyObject *key,
+                                      Py_hash_t hash, PyObject **result)
+{
+    PyObject *value;
+    Py_ssize_t ix = _Py_dict_lookup(op, key, hash, &value);
+    assert(ix >= 0 || value == NULL);
+    if (ix == DKIX_ERROR) {
+        *result = NULL;
+        return -1;
+    }
+    if (value == NULL) {
+        *result = NULL;
+        return 0;  // missing key
+    }
+    *result = Py_NewRef(value);
+    return 1;  // key is present
+}
+
 /* Gets an item and provides a new reference if the value is present.
  * Returns 1 if the key is present, 0 if the key is missing, and -1 if an
  * exception occurred.
@@ -2301,14 +2342,10 @@ PyDict_GetItemRef(PyObject *op, PyObject *key, PyObject **result)
         return -1;
     }
 
-    Py_hash_t hash;
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1)
-    {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            *result = NULL;
-            return -1;
-        }
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        *result = NULL;
+        return -1;
     }
 
     return _PyDict_GetItemRef_KnownHash((PyDictObject *)op, key, hash, result);
@@ -2320,13 +2357,10 @@ _PyDict_GetItemRef_Unicode_LockHeld(PyDictObject *op, PyObject *key, PyObject **
     ASSERT_DICT_LOCKED(op);
     assert(PyUnicode_CheckExact(key));
 
-    Py_hash_t hash;
-    if ((hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            *result = NULL;
-            return -1;
-        }
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        *result = NULL;
+        return -1;
     }
 
     PyObject *value;
@@ -2360,12 +2394,9 @@ PyDict_GetItemWithError(PyObject *op, PyObject *key)
         PyErr_BadInternalCall();
         return NULL;
     }
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1)
-    {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            return NULL;
-        }
+    hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return NULL;
     }
 
 #ifdef Py_GIL_DISABLED
@@ -2433,10 +2464,9 @@ _PyDict_LoadGlobal(PyDictObject *globals, PyDictObject *builtins, PyObject *key)
     Py_hash_t hash;
     PyObject *value;
 
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return NULL;
+    hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return NULL;
     }
 
     /* namespace 1: globals */
@@ -2461,14 +2491,11 @@ setitem_take2_lock_held(PyDictObject *mp, PyObject *key, PyObject *value)
     assert(key);
     assert(value);
     assert(PyDict_Check(mp));
-    Py_hash_t hash;
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            Py_DECREF(key);
-            Py_DECREF(value);
-            return -1;
-        }
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        Py_DECREF(key);
+        Py_DECREF(value);
+        return -1;
     }
 
     PyInterpreterState *interp = _PyInterpreterState_GET();
@@ -2520,11 +2547,21 @@ setitem_lock_held(PyDictObject *mp, PyObject *key, PyObject *value)
 
 
 int
-_PyDict_SetItem_KnownHash(PyObject *op, PyObject *key, PyObject *value,
-                         Py_hash_t hash)
+_PyDict_SetItem_KnownHash_LockHeld(PyDictObject *mp, PyObject *key, PyObject *value,
+                                   Py_hash_t hash)
 {
-    PyDictObject *mp;
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (mp->ma_keys == Py_EMPTY_KEYS) {
+        return insert_to_emptydict(interp, mp, Py_NewRef(key), hash, Py_NewRef(value));
+    }
+    /* insertdict() handles any resizing that might be necessary */
+    return insertdict(interp, mp, Py_NewRef(key), hash, Py_NewRef(value));
+}
 
+int
+_PyDict_SetItem_KnownHash(PyObject *op, PyObject *key, PyObject *value,
+                          Py_hash_t hash)
+{
     if (!PyDict_Check(op)) {
         PyErr_BadInternalCall();
         return -1;
@@ -2532,21 +2569,10 @@ _PyDict_SetItem_KnownHash(PyObject *op, PyObject *key, PyObject *value,
     assert(key);
     assert(value);
     assert(hash != -1);
-    mp = (PyDictObject *)op;
 
     int res;
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-
-    Py_BEGIN_CRITICAL_SECTION(mp);
-
-    if (mp->ma_keys == Py_EMPTY_KEYS) {
-        res = insert_to_emptydict(interp, mp, Py_NewRef(key), hash, Py_NewRef(value));
-    }
-    else {
-        /* insertdict() handles any resizing that might be necessary */
-        res = insertdict(interp, mp, Py_NewRef(key), hash, Py_NewRef(value));
-    }
-
+    Py_BEGIN_CRITICAL_SECTION(op);
+    res = _PyDict_SetItem_KnownHash_LockHeld((PyDictObject *)op, key, value, hash);
     Py_END_CRITICAL_SECTION();
     return res;
 }
@@ -2569,7 +2595,7 @@ delete_index_from_values(PyDictValues *values, Py_ssize_t ix)
     values->size = size;
 }
 
-static int
+static void
 delitem_common(PyDictObject *mp, Py_hash_t hash, Py_ssize_t ix,
                PyObject *old_value, uint64_t new_version)
 {
@@ -2580,7 +2606,7 @@ delitem_common(PyDictObject *mp, Py_hash_t hash, Py_ssize_t ix,
     Py_ssize_t hashpos = lookdict_index(mp->ma_keys, hash, ix);
     assert(hashpos >= 0);
 
-    FT_ATOMIC_STORE_SSIZE_RELAXED(mp->ma_used, FT_ATOMIC_LOAD_SSIZE(mp->ma_used) - 1);
+    STORE_USED(mp, mp->ma_used - 1);
     mp->ma_version_tag = new_version;
     if (_PyDict_HasSplitTable(mp)) {
         assert(old_value == mp->ma_values->values[ix]);
@@ -2611,18 +2637,15 @@ delitem_common(PyDictObject *mp, Py_hash_t hash, Py_ssize_t ix,
     Py_DECREF(old_value);
 
     ASSERT_CONSISTENT(mp);
-    return 0;
 }
 
 int
 PyDict_DelItem(PyObject *op, PyObject *key)
 {
-    Py_hash_t hash;
     assert(key);
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return -1;
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return -1;
     }
 
     return _PyDict_DelItem_KnownHash(op, key, hash);
@@ -2656,7 +2679,8 @@ delitem_knownhash_lock_held(PyObject *op, PyObject *key, Py_hash_t hash)
     PyInterpreterState *interp = _PyInterpreterState_GET();
     uint64_t new_version = _PyDict_NotifyEvent(
             interp, PyDict_EVENT_DELETED, mp, key, NULL);
-    return delitem_common(mp, hash, ix, old_value, new_version);
+    delitem_common(mp, hash, ix, old_value, new_version);
+    return 0;
 }
 
 int
@@ -2671,7 +2695,8 @@ _PyDict_DelItem_KnownHash(PyObject *op, PyObject *key, Py_hash_t hash)
 
 static int
 delitemif_lock_held(PyObject *op, PyObject *key,
-                    int (*predicate)(PyObject *value))
+                    int (*predicate)(PyObject *value, void *arg),
+                    void *arg)
 {
     Py_ssize_t ix;
     PyDictObject *mp;
@@ -2681,24 +2706,20 @@ delitemif_lock_held(PyObject *op, PyObject *key,
 
     ASSERT_DICT_LOCKED(op);
 
-    if (!PyDict_Check(op)) {
-        PyErr_BadInternalCall();
-        return -1;
-    }
     assert(key);
     hash = PyObject_Hash(key);
     if (hash == -1)
         return -1;
     mp = (PyDictObject *)op;
     ix = _Py_dict_lookup(mp, key, hash, &old_value);
-    if (ix == DKIX_ERROR)
+    if (ix == DKIX_ERROR) {
         return -1;
+    }
     if (ix == DKIX_EMPTY || old_value == NULL) {
-        _PyErr_SetKeyError(key);
-        return -1;
+        return 0;
     }
 
-    res = predicate(old_value);
+    res = predicate(old_value, arg);
     if (res == -1)
         return -1;
 
@@ -2706,7 +2727,8 @@ delitemif_lock_held(PyObject *op, PyObject *key,
         PyInterpreterState *interp = _PyInterpreterState_GET();
         uint64_t new_version = _PyDict_NotifyEvent(
                 interp, PyDict_EVENT_DELETED, mp, key, NULL);
-        return delitem_common(mp, hash, ix, old_value, new_version);
+        delitem_common(mp, hash, ix, old_value, new_version);
+        return 1;
     } else {
         return 0;
     }
@@ -2718,11 +2740,13 @@ delitemif_lock_held(PyObject *op, PyObject *key,
  */
 int
 _PyDict_DelItemIf(PyObject *op, PyObject *key,
-                  int (*predicate)(PyObject *value))
+                  int (*predicate)(PyObject *value, void *arg),
+                  void *arg)
 {
+    assert(PyDict_Check(op));
     int res;
     Py_BEGIN_CRITICAL_SECTION(op);
-    res = delitemif_lock_held(op, key, predicate);
+    res = delitemif_lock_held(op, key, predicate, arg);
     Py_END_CRITICAL_SECTION();
     return res;
 }
@@ -2752,7 +2776,7 @@ clear_lock_held(PyObject *op)
     // We don't inc ref empty keys because they're immortal
     ensure_shared_on_resize(mp);
     mp->ma_version_tag = new_version;
-    mp->ma_used = 0;
+    STORE_USED(mp, 0);
     if (oldvalues == NULL) {
         set_keys(mp, Py_EMPTY_KEYS);
         assert(oldkeys->dk_refcnt == 1);
@@ -2801,8 +2825,6 @@ _PyDict_Next(PyObject *op, Py_ssize_t *ppos, PyObject **pkey,
     if (!PyDict_Check(op))
         return 0;
 
-    ASSERT_DICT_LOCKED(op);
-
     mp = (PyDictObject *)op;
     i = *ppos;
     if (_PyDict_HasSplitTable(mp)) {
@@ -2875,11 +2897,7 @@ _PyDict_Next(PyObject *op, Py_ssize_t *ppos, PyObject **pkey,
 int
 PyDict_Next(PyObject *op, Py_ssize_t *ppos, PyObject **pkey, PyObject **pvalue)
 {
-    int res;
-    Py_BEGIN_CRITICAL_SECTION(op);
-    res = _PyDict_Next(op, ppos, pkey, pvalue, NULL);
-    Py_END_CRITICAL_SECTION();
-    return res;
+    return _PyDict_Next(op, ppos, pkey, pvalue, NULL);
 }
 
 
@@ -2952,15 +2970,12 @@ pop_lock_held(PyObject *op, PyObject *key, PyObject **result)
         return 0;
     }
 
-    Py_hash_t hash;
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            if (result) {
-                *result = NULL;
-            }
-            return -1;
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        if (result) {
+            *result = NULL;
         }
+        return -1;
     }
     return _PyDict_Pop_KnownHash(dict, key, hash, result);
 }
@@ -3109,7 +3124,7 @@ _PyDict_FromKeys(PyObject *cls, PyObject *iterable, PyObject *value)
                 goto dict_iter_exit;
             }
         }
-dict_iter_exit:
+dict_iter_exit:;
         Py_END_CRITICAL_SECTION();
     } else {
         while ((key = PyIter_Next(it)) != NULL) {
@@ -3138,14 +3153,11 @@ dict_dealloc(PyObject *self)
 {
     PyDictObject *mp = (PyDictObject *)self;
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    assert(Py_REFCNT(mp) == 0);
-    Py_SET_REFCNT(mp, 1);
+    _PyObject_ResurrectStart(self);
     _PyDict_NotifyEvent(interp, PyDict_EVENT_DEALLOCATED, mp, NULL, NULL);
-    if (Py_REFCNT(mp) > 1) {
-        Py_SET_REFCNT(mp, Py_REFCNT(mp) - 1);
+    if (_PyObject_ResurrectEnd(self)) {
         return;
     }
-    Py_SET_REFCNT(mp, 0);
     PyDictValues *values = mp->ma_values;
     PyDictKeysObject *keys = mp->ma_keys;
     Py_ssize_t i, n;
@@ -3191,6 +3203,8 @@ dict_repr_lock_held(PyObject *self)
     _PyUnicodeWriter writer;
     int first;
 
+    ASSERT_DICT_LOCKED(mp);
+
     i = Py_ReprEnter((PyObject *)mp);
     if (i != 0) {
         return i > 0 ? PyUnicode_FromString("{...}") : NULL;
@@ -3279,8 +3293,7 @@ dict_repr(PyObject *self)
 static Py_ssize_t
 dict_length(PyObject *self)
 {
-    PyDictObject *mp = (PyDictObject *)self;
-    return _Py_atomic_load_ssize_relaxed(&mp->ma_used);
+    return FT_ATOMIC_LOAD_SSIZE_RELAXED(((PyDictObject *)self)->ma_used);
 }
 
 static PyObject *
@@ -3291,10 +3304,9 @@ dict_subscript(PyObject *self, PyObject *key)
     Py_hash_t hash;
     PyObject *value;
 
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return NULL;
+    hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return NULL;
     }
     ix = _Py_dict_lookup_threadsafe(mp, key, hash, &value);
     if (ix == DKIX_ERROR)
@@ -3672,6 +3684,9 @@ PyDict_MergeFromSeq2(PyObject *d, PyObject *seq2, int override)
 static int
 dict_dict_merge(PyInterpreterState *interp, PyDictObject *mp, PyDictObject *other, int override)
 {
+    ASSERT_DICT_LOCKED(mp);
+    ASSERT_DICT_LOCKED(other);
+
     if (other == mp || other->ma_used == 0)
         /* a.update(a) or a.update({}); nothing to do */
         return 0;
@@ -3699,7 +3714,7 @@ dict_dict_merge(PyInterpreterState *interp, PyDictObject *mp, PyDictObject *othe
             ensure_shared_on_resize(mp);
             dictkeys_decref(interp, mp->ma_keys, IS_DICT_SHARED(mp));
             mp->ma_keys = keys;
-            mp->ma_used = other->ma_used;
+            STORE_USED(mp, other->ma_used);
             mp->ma_version_tag = new_version;
             ASSERT_CONSISTENT(mp);
 
@@ -3903,13 +3918,13 @@ dict_copy_impl(PyDictObject *self)
 }
 
 /* Copies the values, but does not change the reference
- * counts of the objects in the array. */
+ * counts of the objects in the array.
+ * Return NULL, but does *not* set an exception on failure  */
 static PyDictValues *
 copy_values(PyDictValues *values)
 {
     PyDictValues *newvalues = new_values(values->capacity);
     if (newvalues == NULL) {
-        PyErr_NoMemory();
         return NULL;
     }
     newvalues->size = values->size;
@@ -4034,7 +4049,7 @@ PyDict_Size(PyObject *mp)
         PyErr_BadInternalCall();
         return -1;
     }
-    return ((PyDictObject *)mp)->ma_used;
+    return FT_ATOMIC_LOAD_SSIZE_RELAXED(((PyDictObject *)mp)->ma_used);
 }
 
 /* Return 1 if dicts equal, 0 if not, -1 if error.
@@ -4053,7 +4068,7 @@ dict_equal_lock_held(PyDictObject *a, PyDictObject *b)
         /* can't be equal if # of entries differ */
         return 0;
     /* Same # of entries -- check all of 'em.  Exit early on any diff. */
-    for (i = 0; i < LOAD_KEYS_NENTIRES(a->ma_keys); i++) {
+    for (i = 0; i < LOAD_KEYS_NENTRIES(a->ma_keys); i++) {
         PyObject *key, *aval;
         Py_hash_t hash;
         if (DK_IS_UNICODE(a->ma_keys)) {
@@ -4178,10 +4193,9 @@ dict_get_impl(PyDictObject *self, PyObject *key, PyObject *default_value)
     Py_hash_t hash;
     Py_ssize_t ix;
 
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return NULL;
+    hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return NULL;
     }
     ix = _Py_dict_lookup_threadsafe(self, key, hash, &val);
     if (ix == DKIX_ERROR)
@@ -4211,14 +4225,12 @@ dict_setdefault_ref_lock_held(PyObject *d, PyObject *key, PyObject *default_valu
         return -1;
     }
 
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1) {
-            if (result) {
-                *result = NULL;
-            }
-            return -1;
+    hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        if (result) {
+            *result = NULL;
         }
+        return -1;
     }
 
     if (mp->ma_keys == Py_EMPTY_KEYS) {
@@ -4277,9 +4289,6 @@ dict_setdefault_ref_lock_held(PyObject *d, PyObject *key, PyObject *default_valu
 
     if (ix == DKIX_EMPTY) {
         assert(!_PyDict_HasSplitTable(mp));
-        uint64_t new_version = _PyDict_NotifyEvent(
-            interp, PyDict_EVENT_ADDED, mp, key, default_value);
-        mp->ma_keys->dk_version = 0;
         value = default_value;
 
         if (insert_combined_dict(interp, mp, hash, Py_NewRef(key), Py_NewRef(value)) < 0) {
@@ -4291,8 +4300,7 @@ dict_setdefault_ref_lock_held(PyObject *d, PyObject *key, PyObject *default_valu
         }
 
         MAINTAIN_TRACKING(mp, key, value);
-        mp->ma_used++;
-        mp->ma_version_tag = new_version;
+        STORE_USED(mp, mp->ma_used + 1);
         assert(mp->ma_keys->dk_usable >= 0);
         ASSERT_CONSISTENT(mp);
         if (result) {
@@ -4413,6 +4421,8 @@ dict_popitem_impl(PyDictObject *self)
     uint64_t new_version;
     PyInterpreterState *interp = _PyInterpreterState_GET();
 
+    ASSERT_DICT_LOCKED(self);
+
     /* Allocate the result tuple before checking the size.  Believe it
      * or not, this allocation could trigger a garbage collection which
      * could empty the dict, so if we checked the size first and that
@@ -4615,8 +4625,8 @@ PyDoc_STRVAR(getitem__doc__,
 "__getitem__($self, key, /)\n--\n\nReturn self[key].");
 
 PyDoc_STRVAR(update__doc__,
-"D.update([E, ]**F) -> None.  Update D from dict/iterable E and F.\n\
-If E is present and has a .keys() method, then does:  for k in E: D[k] = E[k]\n\
+"D.update([E, ]**F) -> None.  Update D from mapping/iterable E and F.\n\
+If E is present and has a .keys() method, then does:  for k in E.keys(): D[k] = E[k]\n\
 If E is present and lacks a .keys() method, then does:  for k, v in E: D[k] = v\n\
 In either case, this is followed by: for k in F:  D[k] = F[k]");
 
@@ -4648,12 +4658,10 @@ static PyMethodDef mapp_methods[] = {
 int
 PyDict_Contains(PyObject *op, PyObject *key)
 {
-    Py_hash_t hash;
+    Py_hash_t hash = _PyObject_HashFast(key);
 
-    if (!PyUnicode_CheckExact(key) || (hash = unicode_get_hash(key)) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return -1;
+    if (hash == -1) {
+        return -1;
     }
 
     return _PyDict_Contains_KnownHash(op, key, hash);
@@ -4910,7 +4918,8 @@ PyDict_SetItemString(PyObject *v, const char *key, PyObject *item)
     kv = PyUnicode_FromString(key);
     if (kv == NULL)
         return -1;
-    PyUnicode_InternInPlace(&kv); /* XXX Should we really? */
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternImmortal(interp, &kv); /* XXX Should we really? */
     err = PyDict_SetItem(v, kv, item);
     Py_DECREF(kv);
     return err;
@@ -4952,19 +4961,21 @@ typedef struct {
 static PyObject *
 dictiter_new(PyDictObject *dict, PyTypeObject *itertype)
 {
+    Py_ssize_t used;
     dictiterobject *di;
     di = PyObject_GC_New(dictiterobject, itertype);
     if (di == NULL) {
         return NULL;
     }
     di->di_dict = (PyDictObject*)Py_NewRef(dict);
-    di->di_used = dict->ma_used;
-    di->len = dict->ma_used;
+    used = FT_ATOMIC_LOAD_SSIZE_RELAXED(dict->ma_used);
+    di->di_used = used;
+    di->len = used;
     if (itertype == &PyDictRevIterKey_Type ||
          itertype == &PyDictRevIterItem_Type ||
          itertype == &PyDictRevIterValue_Type) {
         if (_PyDict_HasSplitTable(dict)) {
-            di->di_pos = dict->ma_used - 1;
+            di->di_pos = used - 1;
         }
         else {
             di->di_pos = load_keys_nentries(dict) - 1;
@@ -5013,8 +5024,8 @@ dictiter_len(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     dictiterobject *di = (dictiterobject *)self;
     Py_ssize_t len = 0;
-    if (di->di_dict != NULL && di->di_used == di->di_dict->ma_used)
-        len = di->len;
+    if (di->di_dict != NULL && di->di_used == FT_ATOMIC_LOAD_SSIZE_RELAXED(di->di_dict->ma_used))
+        len = FT_ATOMIC_LOAD_SSIZE_RELAXED(di->len);
     return PyLong_FromSize_t(len);
 }
 
@@ -5297,6 +5308,7 @@ dictiter_iternextitem_lock_held(PyDictObject *d, PyObject *self,
     Py_ssize_t i;
 
     assert (PyDict_Check(d));
+    ASSERT_DICT_LOCKED(d);
 
     if (di->di_used != d->ma_used) {
         PyErr_SetString(PyExc_RuntimeError,
@@ -5396,6 +5408,7 @@ static int
 dictiter_iternext_threadsafe(PyDictObject *d, PyObject *self,
                              PyObject **out_key, PyObject **out_value)
 {
+    int res;
     dictiterobject *di = (dictiterobject *)self;
     Py_ssize_t i;
     PyDictKeysObject *k;
@@ -5491,7 +5504,6 @@ dictiter_iternext_threadsafe(PyDictObject *d, PyObject *self,
     Py_DECREF(d);
     return -1;
 
-    int res;
 try_locked:
     Py_BEGIN_CRITICAL_SECTION(d);
     res = dictiter_iternextitem_lock_held(d, self, out_key, out_value);
@@ -5811,7 +5823,7 @@ dictview_len(PyObject *self)
     _PyDictViewObject *dv = (_PyDictViewObject *)self;
     Py_ssize_t len = 0;
     if (dv->dv_dict != NULL)
-        len = dv->dv_dict->ma_used;
+        len = FT_ATOMIC_LOAD_SSIZE_RELAXED(dv->dv_dict->ma_used);
     return len;
 }
 
@@ -6687,18 +6699,25 @@ make_dict_from_instance_attributes(PyInterpreterState *interp,
     return res;
 }
 
-static PyDictObject *
-materialize_managed_dict_lock_held(PyObject *obj)
+PyDictObject *
+_PyObject_MaterializeManagedDict_LockHeld(PyObject *obj)
 {
-    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(obj);
+    ASSERT_WORLD_STOPPED_OR_OBJ_LOCKED(obj);
 
-    PyDictValues *values = _PyObject_InlineValues(obj);
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-    PyDictKeysObject *keys = CACHED_KEYS(Py_TYPE(obj));
     OBJECT_STAT_INC(dict_materialized_on_request);
-    PyDictObject *dict = make_dict_from_instance_attributes(interp, keys, values);
+
+    PyDictValues *values = _PyObject_InlineValues(obj);
+    PyDictObject *dict;
+    if (values->valid) {
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        PyDictKeysObject *keys = CACHED_KEYS(Py_TYPE(obj));
+        dict = make_dict_from_instance_attributes(interp, keys, values);
+    }
+    else {
+        dict = (PyDictObject *)PyDict_New();
+    }
     FT_ATOMIC_STORE_PTR_RELEASE(_PyObject_ManagedDictPointer(obj)->dict,
-                                (PyDictObject *)dict);
+                                dict);
     return dict;
 }
 
@@ -6719,7 +6738,7 @@ _PyObject_MaterializeManagedDict(PyObject *obj)
         goto exit;
     }
 #endif
-    dict = materialize_managed_dict_lock_held(obj);
+    dict = _PyObject_MaterializeManagedDict_LockHeld(obj);
 
 #ifdef Py_GIL_DISABLED
 exit:
@@ -6732,11 +6751,9 @@ int
 _PyDict_SetItem_LockHeld(PyDictObject *dict, PyObject *name, PyObject *value)
 {
     if (value == NULL) {
-        Py_hash_t hash;
-        if (!PyUnicode_CheckExact(name) || (hash = unicode_get_hash(name)) == -1) {
-            hash = PyObject_Hash(name);
-            if (hash == -1)
-                return -1;
+        Py_hash_t hash = _PyObject_HashFast(name);
+        if (hash == -1) {
+            return -1;
         }
         return delitem_knownhash_lock_held((PyObject *)dict, name, hash);
     } else {
@@ -6808,19 +6825,28 @@ store_instance_attr_lock_held(PyObject *obj, PyDictValues *values,
     }
 
     PyObject *old_value = values->values[ix];
+    if (old_value == NULL && value == NULL) {
+        PyErr_Format(PyExc_AttributeError,
+                        "'%.100s' object has no attribute '%U'",
+                        Py_TYPE(obj)->tp_name, name);
+        return -1;
+    }
+
+    if (dict) {
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        PyDict_WatchEvent event = (old_value == NULL ? PyDict_EVENT_ADDED :
+                                   value == NULL ? PyDict_EVENT_DELETED :
+                                   PyDict_EVENT_MODIFIED);
+        _PyDict_NotifyEvent(interp, event, dict, name, value);
+    }
+
     FT_ATOMIC_STORE_PTR_RELEASE(values->values[ix], Py_XNewRef(value));
 
     if (old_value == NULL) {
-        if (value == NULL) {
-            PyErr_Format(PyExc_AttributeError,
-                         "'%.100s' object has no attribute '%U'",
-                         Py_TYPE(obj)->tp_name, name);
-            return -1;
-        }
         _PyDictValues_AddToInsertionOrder(values, ix);
         if (dict) {
             assert(dict->ma_values == values);
-            dict->ma_used++;
+            STORE_USED(dict, dict->ma_used + 1);
         }
     }
     else {
@@ -6828,7 +6854,7 @@ store_instance_attr_lock_held(PyObject *obj, PyDictValues *values,
             delete_index_from_values(values, ix);
             if (dict) {
                 assert(dict->ma_values == values);
-                dict->ma_used--;
+                STORE_USED(dict, dict->ma_used - 1);
             }
         }
         Py_DECREF(old_value);
@@ -6971,7 +6997,7 @@ _PyObject_TryGetInstanceAttribute(PyObject *obj, PyObject *name, PyObject **attr
             // Still no dict, we can read from the values
             assert(values->valid);
             value = values->values[ix];
-            *attr = Py_XNewRef(value);
+            *attr = _Py_XNewRefWithLock(value);
             success = true;
         }
 
@@ -6991,7 +7017,7 @@ _PyObject_TryGetInstanceAttribute(PyObject *obj, PyObject *name, PyObject **attr
 
     if (dict->ma_values == values && FT_ATOMIC_LOAD_UINT8(values->valid)) {
         value = _Py_atomic_load_ptr_relaxed(&values->values[ix]);
-        *attr = Py_XNewRef(value);
+        *attr = _Py_XNewRefWithLock(value);
         success = true;
     } else {
         // Caller needs to lookup from the dictionary
@@ -7039,7 +7065,7 @@ _PyObject_IsInstanceDictEmpty(PyObject *obj)
     if (dict == NULL) {
         return 1;
     }
-    return ((PyDictObject *)dict)->ma_used == 0;
+    return FT_ATOMIC_LOAD_SSIZE_RELAXED(((PyDictObject *)dict)->ma_used) == 0;
 }
 
 int
@@ -7154,7 +7180,7 @@ PyObject_ClearManagedDict(PyObject *obj)
 int
 _PyDict_DetachFromObject(PyDictObject *mp, PyObject *obj)
 {
-    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(obj);
+    ASSERT_WORLD_STOPPED_OR_OBJ_LOCKED(obj);
     assert(_PyObject_ManagedDictPointer(obj)->dict == mp);
     assert(_PyObject_InlineValuesConsistencyCheck(obj));
 
@@ -7164,7 +7190,7 @@ _PyDict_DetachFromObject(PyDictObject *mp, PyObject *obj)
 
     // We could be called with an unlocked dict when the caller knows the
     // values are already detached, so we assert after inline values check.
-    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(mp);
+    ASSERT_WORLD_STOPPED_OR_OBJ_LOCKED(mp);
     assert(mp->ma_values->embedded == 1);
     assert(mp->ma_values->valid == 1);
     assert(Py_TYPE(obj)->tp_flags & Py_TPFLAGS_INLINE_VALUES);
@@ -7172,6 +7198,13 @@ _PyDict_DetachFromObject(PyDictObject *mp, PyObject *obj)
     PyDictValues *values = copy_values(mp->ma_values);
 
     if (values == NULL) {
+        /* Out of memory. Clear the dict */
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        PyDictKeysObject *oldkeys = mp->ma_keys;
+        set_keys(mp, Py_EMPTY_KEYS);
+        dictkeys_decref(interp, oldkeys, IS_DICT_SHARED(mp));
+        STORE_USED(mp, 0);
+        PyErr_NoMemory();
         return -1;
     }
     mp->ma_values = values;
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index 63c461d34fb4ff..b5f3a60baff9a7 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -510,10 +510,10 @@ static PyTypeObject _PyExc_ ## EXCNAME = { \
 }; \
 PyObject *PyExc_ ## EXCNAME = (PyObject *)&_PyExc_ ## EXCNAME
 
-#define MiddlingExtendsException(EXCBASE, EXCNAME, EXCSTORE, EXCDOC) \
-static PyTypeObject _PyExc_ ## EXCNAME = { \
+#define MiddlingExtendsExceptionEx(EXCBASE, EXCNAME, PYEXCNAME, EXCSTORE, EXCDOC) \
+PyTypeObject _PyExc_ ## EXCNAME = { \
     PyVarObject_HEAD_INIT(NULL, 0) \
-    # EXCNAME, \
+    # PYEXCNAME, \
     sizeof(Py ## EXCSTORE ## Object), \
     0, (destructor)EXCSTORE ## _dealloc, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
     0, 0, 0, 0, 0, \
@@ -522,8 +522,12 @@ static PyTypeObject _PyExc_ ## EXCNAME = { \
     (inquiry)EXCSTORE ## _clear, 0, 0, 0, 0, 0, 0, 0, &_ ## EXCBASE, \
     0, 0, 0, offsetof(Py ## EXCSTORE ## Object, dict), \
     (initproc)EXCSTORE ## _init, 0, 0, \
-}; \
-PyObject *PyExc_ ## EXCNAME = (PyObject *)&_PyExc_ ## EXCNAME
+};
+
+#define MiddlingExtendsException(EXCBASE, EXCNAME, EXCSTORE, EXCDOC) \
+    static MiddlingExtendsExceptionEx( \
+        EXCBASE, EXCNAME, EXCNAME, EXCSTORE, EXCDOC); \
+    PyObject *PyExc_ ## EXCNAME = (PyObject *)&_PyExc_ ## EXCNAME
 
 #define ComplexExtendsException(EXCBASE, EXCNAME, EXCSTORE, EXCNEW, \
                                 EXCMETHODS, EXCMEMBERS, EXCGETSET, \
@@ -2573,8 +2577,8 @@ MiddlingExtendsException(PyExc_IndentationError, TabError, SyntaxError,
 /*
  *    IncompleteInputError extends SyntaxError
  */
-MiddlingExtendsException(PyExc_SyntaxError, IncompleteInputError, SyntaxError,
-                         "incomplete input.");
+MiddlingExtendsExceptionEx(PyExc_SyntaxError, IncompleteInputError, _IncompleteInputError,
+                           SyntaxError, "incomplete input.");
 
 /*
  *    LookupError extends Exception
@@ -2955,46 +2959,55 @@ UnicodeEncodeError_init(PyObject *self, PyObject *args, PyObject *kwds)
 static PyObject *
 UnicodeEncodeError_str(PyObject *self)
 {
-    PyUnicodeErrorObject *uself = (PyUnicodeErrorObject *)self;
+    PyUnicodeErrorObject *exc = (PyUnicodeErrorObject *)self;
     PyObject *result = NULL;
     PyObject *reason_str = NULL;
     PyObject *encoding_str = NULL;
 
-    if (!uself->object)
+    if (exc->object == NULL) {
         /* Not properly initialized. */
         return PyUnicode_FromString("");
+    }
 
     /* Get reason and encoding as strings, which they might not be if
        they've been modified after we were constructed. */
-    reason_str = PyObject_Str(uself->reason);
-    if (reason_str == NULL)
+    reason_str = PyObject_Str(exc->reason);
+    if (reason_str == NULL) {
         goto done;
-    encoding_str = PyObject_Str(uself->encoding);
-    if (encoding_str == NULL)
+    }
+    encoding_str = PyObject_Str(exc->encoding);
+    if (encoding_str == NULL) {
         goto done;
+    }
 
-    if (uself->start < PyUnicode_GET_LENGTH(uself->object) && uself->end == uself->start+1) {
-        Py_UCS4 badchar = PyUnicode_ReadChar(uself->object, uself->start);
+    Py_ssize_t len = PyUnicode_GET_LENGTH(exc->object);
+    Py_ssize_t start = exc->start, end = exc->end;
+
+    if ((start >= 0 && start < len) && (end >= 0 && end <= len) && end == start + 1) {
+        Py_UCS4 badchar = PyUnicode_ReadChar(exc->object, start);
         const char *fmt;
-        if (badchar <= 0xff)
+        if (badchar <= 0xff) {
             fmt = "'%U' codec can't encode character '\\x%02x' in position %zd: %U";
-        else if (badchar <= 0xffff)
+        }
+        else if (badchar <= 0xffff) {
             fmt = "'%U' codec can't encode character '\\u%04x' in position %zd: %U";
-        else
+        }
+        else {
             fmt = "'%U' codec can't encode character '\\U%08x' in position %zd: %U";
+        }
         result = PyUnicode_FromFormat(
             fmt,
             encoding_str,
             (int)badchar,
-            uself->start,
+            start,
             reason_str);
     }
     else {
         result = PyUnicode_FromFormat(
             "'%U' codec can't encode characters in position %zd-%zd: %U",
             encoding_str,
-            uself->start,
-            uself->end-1,
+            start,
+            end - 1,
             reason_str);
     }
 done:
@@ -3068,41 +3081,46 @@ UnicodeDecodeError_init(PyObject *self, PyObject *args, PyObject *kwds)
 static PyObject *
 UnicodeDecodeError_str(PyObject *self)
 {
-    PyUnicodeErrorObject *uself = (PyUnicodeErrorObject *)self;
+    PyUnicodeErrorObject *exc = (PyUnicodeErrorObject *)self;
     PyObject *result = NULL;
     PyObject *reason_str = NULL;
     PyObject *encoding_str = NULL;
 
-    if (!uself->object)
+    if (exc->object == NULL) {
         /* Not properly initialized. */
         return PyUnicode_FromString("");
+    }
 
     /* Get reason and encoding as strings, which they might not be if
        they've been modified after we were constructed. */
-    reason_str = PyObject_Str(uself->reason);
-    if (reason_str == NULL)
+    reason_str = PyObject_Str(exc->reason);
+    if (reason_str == NULL) {
         goto done;
-    encoding_str = PyObject_Str(uself->encoding);
-    if (encoding_str == NULL)
+    }
+    encoding_str = PyObject_Str(exc->encoding);
+    if (encoding_str == NULL) {
         goto done;
+    }
 
-    if (uself->start < PyBytes_GET_SIZE(uself->object) && uself->end == uself->start+1) {
-        int byte = (int)(PyBytes_AS_STRING(((PyUnicodeErrorObject *)self)->object)[uself->start]&0xff);
+    Py_ssize_t len = PyBytes_GET_SIZE(exc->object);
+    Py_ssize_t start = exc->start, end = exc->end;
+
+    if ((start >= 0 && start < len) && (end >= 0 && end <= len) && end == start + 1) {
+        int badbyte = (int)(PyBytes_AS_STRING(exc->object)[start] & 0xff);
         result = PyUnicode_FromFormat(
             "'%U' codec can't decode byte 0x%02x in position %zd: %U",
             encoding_str,
-            byte,
-            uself->start,
+            badbyte,
+            start,
             reason_str);
     }
     else {
         result = PyUnicode_FromFormat(
             "'%U' codec can't decode bytes in position %zd-%zd: %U",
             encoding_str,
-            uself->start,
-            uself->end-1,
-            reason_str
-            );
+            start,
+            end - 1,
+            reason_str);
     }
 done:
     Py_XDECREF(reason_str);
@@ -3165,42 +3183,49 @@ UnicodeTranslateError_init(PyUnicodeErrorObject *self, PyObject *args,
 static PyObject *
 UnicodeTranslateError_str(PyObject *self)
 {
-    PyUnicodeErrorObject *uself = (PyUnicodeErrorObject *)self;
+    PyUnicodeErrorObject *exc = (PyUnicodeErrorObject *)self;
     PyObject *result = NULL;
     PyObject *reason_str = NULL;
 
-    if (!uself->object)
+    if (exc->object == NULL) {
         /* Not properly initialized. */
         return PyUnicode_FromString("");
+    }
 
     /* Get reason as a string, which it might not be if it's been
        modified after we were constructed. */
-    reason_str = PyObject_Str(uself->reason);
-    if (reason_str == NULL)
+    reason_str = PyObject_Str(exc->reason);
+    if (reason_str == NULL) {
         goto done;
+    }
 
-    if (uself->start < PyUnicode_GET_LENGTH(uself->object) && uself->end == uself->start+1) {
-        Py_UCS4 badchar = PyUnicode_ReadChar(uself->object, uself->start);
+    Py_ssize_t len = PyUnicode_GET_LENGTH(exc->object);
+    Py_ssize_t start = exc->start, end = exc->end;
+
+    if ((start >= 0 && start < len) && (end >= 0 && end <= len) && end == start + 1) {
+        Py_UCS4 badchar = PyUnicode_ReadChar(exc->object, start);
         const char *fmt;
-        if (badchar <= 0xff)
+        if (badchar <= 0xff) {
             fmt = "can't translate character '\\x%02x' in position %zd: %U";
-        else if (badchar <= 0xffff)
+        }
+        else if (badchar <= 0xffff) {
             fmt = "can't translate character '\\u%04x' in position %zd: %U";
-        else
+        }
+        else {
             fmt = "can't translate character '\\U%08x' in position %zd: %U";
+        }
         result = PyUnicode_FromFormat(
             fmt,
             (int)badchar,
-            uself->start,
-            reason_str
-        );
-    } else {
+            start,
+            reason_str);
+    }
+    else {
         result = PyUnicode_FromFormat(
             "can't translate characters in position %zd-%zd: %U",
-            uself->start,
-            uself->end-1,
-            reason_str
-            );
+            start,
+            end - 1,
+            reason_str);
     }
 done:
     Py_XDECREF(reason_str);
@@ -3248,7 +3273,7 @@ SimpleExtendsException(PyExc_Exception, ArithmeticError,
  *    FloatingPointError extends ArithmeticError
  */
 SimpleExtendsException(PyExc_ArithmeticError, FloatingPointError,
-                       "Floating point operation failed.");
+                       "Floating-point operation failed.");
 
 
 /*
@@ -3640,7 +3665,7 @@ static struct static_exception static_exceptions[] = {
 
     // Level 4: Other subclasses
     ITEM(IndentationError), // base: SyntaxError(Exception)
-    ITEM(IncompleteInputError), // base: SyntaxError(Exception)
+    {&_PyExc_IncompleteInputError, "_IncompleteInputError"}, // base: SyntaxError(Exception)
     ITEM(IndexError),  // base: LookupError(Exception)
     ITEM(KeyError),  // base: LookupError(Exception)
     ITEM(ModuleNotFoundError), // base: ImportError(Exception)
@@ -3685,7 +3710,7 @@ _PyExc_FiniTypes(PyInterpreterState *interp)
 {
     for (Py_ssize_t i=Py_ARRAY_LENGTH(static_exceptions) - 1; i >= 0; i--) {
         PyTypeObject *exc = static_exceptions[i].exc;
-        _PyStaticType_Dealloc(interp, exc);
+        _PyStaticType_FiniBuiltin(interp, exc);
     }
 }
 
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 96227f2cf7d76f..14a98f542fa96c 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -1633,12 +1633,12 @@ float.__new__ as float_new
     x: object(c_default="NULL") = 0
     /
 
-Convert a string or number to a floating point number, if possible.
+Convert a string or number to a floating-point number, if possible.
 [clinic start generated code]*/
 
 static PyObject *
 float_new_impl(PyTypeObject *type, PyObject *x)
-/*[clinic end generated code: output=ccf1e8dc460ba6ba input=f43661b7de03e9d8]*/
+/*[clinic end generated code: output=ccf1e8dc460ba6ba input=55909f888aa0c8a6]*/
 {
     if (type != &PyFloat_Type) {
         if (x == NULL) {
@@ -1734,13 +1734,13 @@ You probably don't want to use this function.
 It exists mainly to be used in Python's test suite.
 
 This function returns whichever of 'unknown', 'IEEE, big-endian' or 'IEEE,
-little-endian' best describes the format of floating point numbers used by the
+little-endian' best describes the format of floating-point numbers used by the
 C type named by typestr.
 [clinic start generated code]*/
 
 static PyObject *
 float___getformat___impl(PyTypeObject *type, const char *typestr)
-/*[clinic end generated code: output=2bfb987228cc9628 input=d5a52600f835ad67]*/
+/*[clinic end generated code: output=2bfb987228cc9628 input=90d5e246409a246e]*/
 {
     float_format_type r;
 
@@ -1926,7 +1926,7 @@ _init_global_state(void)
     float_format_type detected_double_format, detected_float_format;
 
     /* We attempt to determine if this machine is using IEEE
-       floating point formats by peering at the bits of some
+       floating-point formats by peering at the bits of some
        carefully chosen values.  If it looks like we are on an
        IEEE platform, the float packing/unpacking routines can
        just copy bits, if not they resort to arithmetic & shifts
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index d7fcb1925d286c..8c596ede70ca3d 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -5,6 +5,7 @@
 #include "pycore_code.h"          // CO_FAST_LOCAL, etc.
 #include "pycore_function.h"      // _PyFunction_FromConstructor()
 #include "pycore_moduleobject.h"  // _PyModule_GetDict()
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
 #include "pycore_object.h"        // _PyObject_GC_UNTRACK()
 #include "pycore_opcode_metadata.h" // _PyOpcode_Deopt, _PyOpcode_Caches
 
@@ -53,22 +54,27 @@ static int
 framelocalsproxy_getkeyindex(PyFrameObject *frame, PyObject* key, bool read)
 {
     /*
-     * Returns the fast locals index of the key
+     * Returns -2 (!) if an error occurred; exception will be set.
+     * Returns the fast locals index of the key on success:
      *   - if read == true, returns the index if the value is not NULL
      *   - if read == false, returns the index if the value is not hidden
+     * Otherwise returns -1.
      */
 
-    assert(PyUnicode_CheckExact(key));
-
     PyCodeObject *co = _PyFrame_GetCode(frame->f_frame);
-    int found_key = false;
+
+    // Ensure that the key is hashable.
+    Py_hash_t key_hash = PyObject_Hash(key);
+    if (key_hash == -1) {
+        return -2;
+    }
+    bool found = false;
 
     // We do 2 loops here because it's highly possible the key is interned
     // and we can do a pointer comparison.
     for (int i = 0; i < co->co_nlocalsplus; i++) {
         PyObject *name = PyTuple_GET_ITEM(co->co_localsplusnames, i);
         if (name == key) {
-            found_key = true;
             if (read) {
                 if (framelocalsproxy_getval(frame->f_frame, co, i) != NULL) {
                     return i;
@@ -78,23 +84,35 @@ framelocalsproxy_getkeyindex(PyFrameObject *frame, PyObject* key, bool read)
                     return i;
                 }
             }
+            found = true;
         }
     }
-
-    if (!found_key) {
-        // This is unlikely, but we need to make sure. This means the key
-        // is not interned.
-        for (int i = 0; i < co->co_nlocalsplus; i++) {
-            PyObject *name = PyTuple_GET_ITEM(co->co_localsplusnames, i);
-            if (_PyUnicode_EQ(name, key)) {
-                if (read) {
-                    if (framelocalsproxy_getval(frame->f_frame, co, i) != NULL) {
-                        return i;
-                    }
-                } else {
-                    if (!(_PyLocals_GetKind(co->co_localspluskinds, i) & CO_FAST_HIDDEN)) {
-                        return i;
-                    }
+    if (found) {
+        // This is an attempt to read an unset local variable or
+        // write to a variable that is hidden from regular write operations
+        return -1;
+    }
+    // This is unlikely, but we need to make sure. This means the key
+    // is not interned.
+    for (int i = 0; i < co->co_nlocalsplus; i++) {
+        PyObject *name = PyTuple_GET_ITEM(co->co_localsplusnames, i);
+        Py_hash_t name_hash = PyObject_Hash(name);
+        assert(name_hash != -1);  // keys are exact unicode
+        if (name_hash != key_hash) {
+            continue;
+        }
+        int same = PyObject_RichCompareBool(name, key, Py_EQ);
+        if (same < 0) {
+            return -2;
+        }
+        if (same) {
+            if (read) {
+                if (framelocalsproxy_getval(frame->f_frame, co, i) != NULL) {
+                    return i;
+                }
+            } else {
+                if (!(_PyLocals_GetKind(co->co_localspluskinds, i) & CO_FAST_HIDDEN)) {
+                    return i;
                 }
             }
         }
@@ -109,13 +127,14 @@ framelocalsproxy_getitem(PyObject *self, PyObject *key)
     PyFrameObject* frame = ((PyFrameLocalsProxyObject*)self)->frame;
     PyCodeObject* co = _PyFrame_GetCode(frame->f_frame);
 
-    if (PyUnicode_CheckExact(key)) {
-        int i = framelocalsproxy_getkeyindex(frame, key, true);
-        if (i >= 0) {
-            PyObject *value = framelocalsproxy_getval(frame->f_frame, co, i);
-            assert(value != NULL);
-            return Py_NewRef(value);
-        }
+    int i = framelocalsproxy_getkeyindex(frame, key, true);
+    if (i == -2) {
+        return NULL;
+    }
+    if (i >= 0) {
+        PyObject *value = framelocalsproxy_getval(frame->f_frame, co, i);
+        assert(value != NULL);
+        return Py_NewRef(value);
     }
 
     // Okay not in the fast locals, try extra locals
@@ -140,40 +159,41 @@ framelocalsproxy_setitem(PyObject *self, PyObject *key, PyObject *value)
     PyObject** fast = _PyFrame_GetLocalsArray(frame->f_frame);
     PyCodeObject* co = _PyFrame_GetCode(frame->f_frame);
 
-    if (value == NULL) {
-        PyErr_SetString(PyExc_TypeError, "cannot remove variables from FrameLocalsProxy");
+    int i = framelocalsproxy_getkeyindex(frame, key, false);
+    if (i == -2) {
         return -1;
     }
+    if (i >= 0) {
+        if (value == NULL) {
+            PyErr_SetString(PyExc_ValueError, "cannot remove local variables from FrameLocalsProxy");
+            return -1;
+        }
 
-    if (PyUnicode_CheckExact(key)) {
-        int i = framelocalsproxy_getkeyindex(frame, key, false);
-        if (i >= 0) {
-            _Py_Executors_InvalidateDependency(PyInterpreterState_Get(), co, 1);
+        _Py_Executors_InvalidateDependency(PyInterpreterState_Get(), co, 1);
 
-            _PyLocals_Kind kind = _PyLocals_GetKind(co->co_localspluskinds, i);
-            PyObject *oldvalue = fast[i];
-            PyObject *cell = NULL;
-            if (kind == CO_FAST_FREE) {
-                // The cell was set when the frame was created from
-                // the function's closure.
-                assert(oldvalue != NULL && PyCell_Check(oldvalue));
+        _PyLocals_Kind kind = _PyLocals_GetKind(co->co_localspluskinds, i);
+        PyObject *oldvalue = fast[i];
+        PyObject *cell = NULL;
+        if (kind == CO_FAST_FREE) {
+            // The cell was set when the frame was created from
+            // the function's closure.
+            assert(oldvalue != NULL && PyCell_Check(oldvalue));
+            cell = oldvalue;
+        } else if (kind & CO_FAST_CELL && oldvalue != NULL) {
+            if (PyCell_Check(oldvalue)) {
                 cell = oldvalue;
-            } else if (kind & CO_FAST_CELL && oldvalue != NULL) {
-                if (PyCell_Check(oldvalue)) {
-                    cell = oldvalue;
-                }
             }
-            if (cell != NULL) {
-                oldvalue = PyCell_GET(cell);
-                if (value != oldvalue) {
-                    PyCell_SET(cell, Py_XNewRef(value));
-                    Py_XDECREF(oldvalue);
-                }
-            } else if (value != oldvalue) {
-                Py_XSETREF(fast[i], Py_NewRef(value));
+        }
+        if (cell != NULL) {
+            oldvalue = PyCell_GET(cell);
+            if (value != oldvalue) {
+                PyCell_SET(cell, Py_XNewRef(value));
+                Py_XDECREF(oldvalue);
             }
-            return 0;
+        } else if (value != oldvalue) {
+            Py_XSETREF(fast[i], Py_NewRef(value));
         }
+        return 0;
     }
 
     // Okay not in the fast locals, try extra locals
@@ -181,6 +201,10 @@ framelocalsproxy_setitem(PyObject *self, PyObject *key, PyObject *value)
     PyObject *extra = frame->f_extra_locals;
 
     if (extra == NULL) {
+        if (value == NULL) {
+            _PyErr_SetKeyError(key);
+            return -1;
+        }
         extra = PyDict_New();
         if (extra == NULL) {
             return -1;
@@ -190,7 +214,11 @@ framelocalsproxy_setitem(PyObject *self, PyObject *key, PyObject *value)
 
     assert(PyDict_Check(extra));
 
-    return PyDict_SetItem(extra, key, value);
+    if (value == NULL) {
+        return PyDict_DelItem(extra, key);
+    } else {
+        return PyDict_SetItem(extra, key, value);
+    }
 }
 
 static int
@@ -235,6 +263,10 @@ framelocalsproxy_merge(PyObject* self, PyObject* other)
 
     Py_DECREF(iter);
 
+    if (PyErr_Occurred()) {
+        return -1;
+    }
+
     return 0;
 }
 
@@ -289,14 +321,31 @@ framelocalsproxy_dealloc(PyObject *self)
 static PyObject *
 framelocalsproxy_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
+    if (PyTuple_GET_SIZE(args) != 1) {
+        PyErr_Format(PyExc_TypeError,
+                     "FrameLocalsProxy expected 1 argument, got %zd",
+                     PyTuple_GET_SIZE(args));
+        return NULL;
+    }
+    PyObject *item = PyTuple_GET_ITEM(args, 0);
+
+    if (!PyFrame_Check(item)) {
+        PyErr_Format(PyExc_TypeError, "expect frame, not %T", item);
+        return NULL;
+    }
+    PyFrameObject *frame = (PyFrameObject*)item;
+
+    if (kwds != NULL && PyDict_Size(kwds) != 0) {
+        PyErr_SetString(PyExc_TypeError,
+                        "FrameLocalsProxy takes no keyword arguments");
+        return 0;
+    }
+
     PyFrameLocalsProxyObject *self = (PyFrameLocalsProxyObject *)type->tp_alloc(type, 0);
     if (self == NULL) {
         return NULL;
     }
 
-    PyFrameObject *frame = (PyFrameObject*)PyTuple_GET_ITEM(args, 0);
-    assert(PyFrame_Check(frame));
-
     ((PyFrameLocalsProxyObject*)self)->frame = (PyFrameObject*)Py_NewRef(frame);
 
     return (PyObject *)self;
@@ -543,11 +592,12 @@ framelocalsproxy_contains(PyObject *self, PyObject *key)
 {
     PyFrameObject *frame = ((PyFrameLocalsProxyObject*)self)->frame;
 
-    if (PyUnicode_CheckExact(key)) {
-        int i = framelocalsproxy_getkeyindex(frame, key, true);
-        if (i >= 0) {
-            return 1;
-        }
+    int i = framelocalsproxy_getkeyindex(frame, key, true);
+    if (i == -2) {
+        return -1;
+    }
+    if (i >= 0) {
+        return 1;
     }
 
     PyObject *extra = ((PyFrameObject*)frame)->f_extra_locals;
@@ -637,6 +687,76 @@ framelocalsproxy_setdefault(PyObject* self, PyObject *const *args, Py_ssize_t na
     return result;
 }
 
+static PyObject*
+framelocalsproxy_pop(PyObject* self, PyObject *const *args, Py_ssize_t nargs)
+{
+    if (!_PyArg_CheckPositional("pop", nargs, 1, 2)) {
+        return NULL;
+    }
+
+    PyObject *key = args[0];
+    PyObject *default_value = NULL;
+
+    if (nargs == 2) {
+        default_value = args[1];
+    }
+
+    PyFrameObject *frame = ((PyFrameLocalsProxyObject*)self)->frame;
+
+    int i = framelocalsproxy_getkeyindex(frame, key, false);
+    if (i == -2) {
+        return NULL;
+    }
+
+    if (i >= 0) {
+        PyErr_SetString(PyExc_ValueError, "cannot remove local variables from FrameLocalsProxy");
+        return NULL;
+    }
+
+    PyObject *result = NULL;
+
+    if (frame->f_extra_locals == NULL) {
+        if (default_value != NULL) {
+            return Py_XNewRef(default_value);
+        } else {
+            _PyErr_SetKeyError(key);
+            return NULL;
+        }
+    }
+
+    if (PyDict_Pop(frame->f_extra_locals, key, &result) < 0) {
+        return NULL;
+    }
+
+    if (result == NULL) {
+        if (default_value != NULL) {
+            return Py_XNewRef(default_value);
+        } else {
+            _PyErr_SetKeyError(key);
+            return NULL;
+        }
+    }
+
+    return result;
+}
+
+static PyObject*
+framelocalsproxy_copy(PyObject *self, PyObject *Py_UNUSED(ignored))
+{
+    PyObject* result = PyDict_New();
+
+    if (result == NULL) {
+        return NULL;
+    }
+
+    if (PyDict_Update(result, self) < 0) {
+        Py_DECREF(result);
+        return NULL;
+    }
+
+    return result;
+}
+
 static PyObject*
 framelocalsproxy_reversed(PyObject *self, void *Py_UNUSED(ignored))
 {
@@ -677,6 +797,8 @@ static PyMethodDef framelocalsproxy_methods[] = {
      NULL},
     {"__reversed__", _PyCFunction_CAST(framelocalsproxy_reversed),       METH_NOARGS,
      NULL},
+    {"copy",         _PyCFunction_CAST(framelocalsproxy_copy),           METH_NOARGS,
+     NULL},
     {"keys",         _PyCFunction_CAST(framelocalsproxy_keys),           METH_NOARGS,
      NULL},
     {"values",       _PyCFunction_CAST(framelocalsproxy_values),         METH_NOARGS,
@@ -685,6 +807,8 @@ static PyMethodDef framelocalsproxy_methods[] = {
      NULL},
     {"get",          _PyCFunction_CAST(framelocalsproxy_get),            METH_FASTCALL,
      NULL},
+    {"pop",          _PyCFunction_CAST(framelocalsproxy_pop),            METH_FASTCALL,
+     NULL},
     {"setdefault",   _PyCFunction_CAST(framelocalsproxy_setdefault),     METH_FASTCALL,
      NULL},
     {NULL,            NULL}   /* sentinel */
@@ -701,7 +825,7 @@ PyTypeObject PyFrameLocalsProxy_Type = {
     .tp_as_mapping = &framelocalsproxy_as_mapping,
     .tp_getattro = PyObject_GenericGetAttr,
     .tp_setattro = PyObject_GenericSetAttr,
-    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_MAPPING,
     .tp_traverse = framelocalsproxy_visit,
     .tp_clear = framelocalsproxy_tp_clear,
     .tp_richcompare = framelocalsproxy_richcompare,
@@ -1607,6 +1731,7 @@ frame_dealloc(PyFrameObject *f)
     Py_CLEAR(f->f_back);
     Py_CLEAR(f->f_trace);
     Py_CLEAR(f->f_extra_locals);
+    Py_CLEAR(f->f_locals_cache);
     PyObject_GC_Del(f);
     Py_XDECREF(co);
     Py_TRASHCAN_END;
@@ -1618,6 +1743,7 @@ frame_traverse(PyFrameObject *f, visitproc visit, void *arg)
     Py_VISIT(f->f_back);
     Py_VISIT(f->f_trace);
     Py_VISIT(f->f_extra_locals);
+    Py_VISIT(f->f_locals_cache);
     if (f->f_frame->owner != FRAME_OWNED_BY_FRAME_OBJECT) {
         return 0;
     }
@@ -1630,6 +1756,7 @@ frame_tp_clear(PyFrameObject *f)
 {
     Py_CLEAR(f->f_trace);
     Py_CLEAR(f->f_extra_locals);
+    Py_CLEAR(f->f_locals_cache);
 
     /* locals and stack */
     PyObject **locals = _PyFrame_GetLocalsArray(f->f_frame);
@@ -1767,6 +1894,7 @@ _PyFrame_New_NoTrack(PyCodeObject *code)
     f->f_trace_opcodes = 0;
     f->f_lineno = 0;
     f->f_extra_locals = NULL;
+    f->f_locals_cache = NULL;
     return f;
 }
 
@@ -1900,8 +2028,7 @@ frame_get_var(_PyInterpreterFrame *frame, PyCodeObject *co, int i,
                 }
                 // (likely) Otherwise it is an arg (kind & CO_FAST_LOCAL),
                 // with the initial value set when the frame was created...
-                // (unlikely) ...or it was set to some initial value by
-                // an earlier call to PyFrame_LocalsToFast().
+                // (unlikely) ...or it was set via the f_locals proxy.
             }
         }
     }
@@ -2014,18 +2141,24 @@ PyFrame_GetVarString(PyFrameObject *frame, const char *name)
 int
 PyFrame_FastToLocalsWithError(PyFrameObject *f)
 {
+    // Nothing to do here, as f_locals is now a write-through proxy in
+    // optimized frames. Soft-deprecated, since there's no maintenance hassle.
     return 0;
 }
 
 void
 PyFrame_FastToLocals(PyFrameObject *f)
 {
+    // Nothing to do here, as f_locals is now a write-through proxy in
+    // optimized frames. Soft-deprecated, since there's no maintenance hassle.
     return;
 }
 
 void
 PyFrame_LocalsToFast(PyFrameObject *f, int clear)
 {
+    // Nothing to do here, as f_locals is now a write-through proxy in
+    // optimized frames. Soft-deprecated, since there's no maintenance hassle.
     return;
 }
 
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 8a30213888ef87..12d60f991534ab 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -986,14 +986,11 @@ func_clear(PyFunctionObject *op)
 static void
 func_dealloc(PyFunctionObject *op)
 {
-    assert(Py_REFCNT(op) == 0);
-    Py_SET_REFCNT(op, 1);
+    _PyObject_ResurrectStart((PyObject *)op);
     handle_func_event(PyFunction_EVENT_DESTROY, op, NULL);
-    if (Py_REFCNT(op) > 1) {
-        Py_SET_REFCNT(op, Py_REFCNT(op) - 1);
+    if (_PyObject_ResurrectEnd((PyObject *)op)) {
         return;
     }
-    Py_SET_REFCNT(op, 0);
     _PyObject_GC_UNTRACK(op);
     if (op->func_weakreflist != NULL) {
         PyObject_ClearWeakRefs((PyObject *) op);
diff --git a/Objects/genericaliasobject.c b/Objects/genericaliasobject.c
index 2779baf0bd1c61..3c64e75fca8a2e 100644
--- a/Objects/genericaliasobject.c
+++ b/Objects/genericaliasobject.c
@@ -561,6 +561,10 @@ ga_getitem(PyObject *self, PyObject *item)
     }
 
     PyObject *res = Py_GenericAlias(alias->origin, newargs);
+    if (res == NULL) {
+        Py_DECREF(newargs);
+        return NULL;
+    }
     ((gaobject *)res)->starred = alias->starred;
 
     Py_DECREF(newargs);
diff --git a/Objects/genobject.c b/Objects/genobject.c
index 92cd8c61e7e9ca..524cda1487813c 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -604,6 +604,7 @@ gen_iternext(PyGenObject *gen)
 int
 _PyGen_SetStopIterationValue(PyObject *value)
 {
+    assert(!PyErr_Occurred());
     PyObject *e;
 
     if (value == NULL ||
diff --git a/Objects/iterobject.c b/Objects/iterobject.c
index 135ced9ea1f268..ebb342ff109222 100644
--- a/Objects/iterobject.c
+++ b/Objects/iterobject.c
@@ -384,6 +384,7 @@ anextawaitable_iternext(anextawaitableobject *obj)
         return result;
     }
     if (PyErr_ExceptionMatches(PyExc_StopAsyncIteration)) {
+        PyErr_Clear();
         _PyGen_SetStopIterationValue(obj->default_value);
     }
     return NULL;
@@ -407,6 +408,7 @@ anextawaitable_proxy(anextawaitableobject *obj, char *meth, PyObject *arg) {
          * exception we replace it with a `StopIteration(default)`, as if
          * it was the return value of `__anext__()` coroutine.
          */
+        PyErr_Clear();
         _PyGen_SetStopIterationValue(obj->default_value);
     }
     return NULL;
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 3c4e2d2e6ed7de..31ec8d5e05cf50 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -3,6 +3,7 @@
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyIndex_Check()
 #include "pycore_ceval.h"         // _PyEval_GetBuiltin()
+#include "pycore_critical_section.h"  // _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED()
 #include "pycore_dict.h"          // _PyDictViewObject
 #include "pycore_pyatomic_ft_wrappers.h"
 #include "pycore_interp.h"        // PyInterpreterState.list
@@ -77,6 +78,25 @@ free_list_items(PyObject** items, bool use_qsbr)
 #endif
 }
 
+static void
+ensure_shared_on_resize(PyListObject *self)
+{
+#ifdef Py_GIL_DISABLED
+    // We can't use _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED here because
+    // the `CALL_LIST_APPEND` bytecode handler may lock the list without
+    // a critical section.
+    assert(Py_REFCNT(self) == 1 || PyMutex_IsLocked(&_PyObject_CAST(self)->ob_mutex));
+
+    // Ensure that the list array is freed using QSBR if we are not the
+    // owning thread.
+    if (!_Py_IsOwnedByCurrentThread((PyObject *)self) &&
+        !_PyObject_GC_IS_SHARED(self))
+    {
+        _PyObject_GC_SET_SHARED(self);
+    }
+#endif
+}
+
 /* Ensure ob_item has room for at least newsize elements, and set
  * ob_size to newsize.  If newsize > ob_size on entry, the content
  * of the new slots at exit is undefined heap trash; it's the caller's
@@ -126,6 +146,8 @@ list_resize(PyListObject *self, Py_ssize_t newsize)
     if (newsize == 0)
         new_allocated = 0;
 
+    ensure_shared_on_resize(self);
+
 #ifdef Py_GIL_DISABLED
     _PyListArray *array = list_allocate_array(new_allocated);
     if (array == NULL) {
@@ -192,6 +214,7 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)
         return -1;
     }
     items = array->ob_item;
+    memset(items, 0, size * sizeof(PyObject *));
 #else
     items = PyMem_New(PyObject*, size);
     if (items == NULL) {
@@ -199,7 +222,7 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)
         return -1;
     }
 #endif
-    self->ob_item = items;
+    FT_ATOMIC_STORE_PTR_RELEASE(self->ob_item, items);
     self->allocated = size;
     return 0;
 }
@@ -350,7 +373,7 @@ list_item_impl(PyListObject *self, Py_ssize_t idx)
     if (!valid_index(idx, size)) {
         goto exit;
     }
-    item = Py_NewRef(self->ob_item[idx]);
+    item = _Py_NewRefWithLock(self->ob_item[idx]);
 exit:
     Py_END_CRITICAL_SECTION();
     return item;
@@ -447,7 +470,7 @@ PyList_SetItem(PyObject *op, Py_ssize_t i,
     p = self->ob_item + i;
     Py_XSETREF(*p, newitem);
     ret = 0;
-end:
+end:;
     Py_END_CRITICAL_SECTION();
     return ret;
 }
@@ -655,14 +678,15 @@ list_item(PyObject *aa, Py_ssize_t i)
         return NULL;
     }
     PyObject *item;
-    Py_BEGIN_CRITICAL_SECTION(a);
 #ifdef Py_GIL_DISABLED
-    if (!_Py_IsOwnedByCurrentThread((PyObject *)a) && !_PyObject_GC_IS_SHARED(a)) {
-        _PyObject_GC_SET_SHARED(a);
+    item = list_get_item_ref(a, i);
+    if (item == NULL) {
+        PyErr_SetObject(PyExc_IndexError, &_Py_STR(list_err));
+        return NULL;
     }
-#endif
+#else
     item = Py_NewRef(a->ob_item[i]);
-    Py_END_CRITICAL_SECTION();
+#endif
     return item;
 }
 
@@ -836,6 +860,9 @@ list_clear_impl(PyListObject *a, bool is_resize)
         Py_XDECREF(items[i]);
     }
 #ifdef Py_GIL_DISABLED
+    if (is_resize) {
+        ensure_shared_on_resize(a);
+    }
     bool use_qsbr = is_resize && _PyObject_GC_IS_SHARED(a);
 #else
     bool use_qsbr = false;
@@ -970,10 +997,12 @@ list_ass_slice(PyListObject *a, Py_ssize_t ilow, Py_ssize_t ihigh, PyObject *v)
         Py_ssize_t n = PyList_GET_SIZE(a);
         PyObject *copy = list_slice_lock_held(a, 0, n);
         if (copy == NULL) {
-            return -1;
+            ret = -1;
+        }
+        else {
+            ret = list_ass_slice_lock_held(a, ilow, ihigh, copy);
+            Py_DECREF(copy);
         }
-        ret = list_ass_slice_lock_held(a, ilow, ihigh, copy);
-        Py_DECREF(copy);
         Py_END_CRITICAL_SECTION();
     }
     else if (v != NULL && PyList_CheckExact(v)) {
@@ -1450,7 +1479,9 @@ PyList_Clear(PyObject *self)
         PyErr_BadInternalCall();
         return -1;
     }
+    Py_BEGIN_CRITICAL_SECTION(self);
     list_clear((PyListObject*)self);
+    Py_END_CRITICAL_SECTION();
     return 0;
 }
 
@@ -3101,6 +3132,7 @@ list_sort_impl(PyListObject *self, PyObject *keyfunc, int reverse)
             Py_XDECREF(final_ob_item[i]);
         }
 #ifdef Py_GIL_DISABLED
+        ensure_shared_on_resize(self);
         bool use_qsbr = _PyObject_GC_IS_SHARED(self);
 #else
         bool use_qsbr = false;
@@ -3376,7 +3408,14 @@ list_richcompare_impl(PyObject *v, PyObject *w, int op)
     }
 
     /* Compare the final item again using the proper operator */
-    return PyObject_RichCompare(vl->ob_item[i], wl->ob_item[i], op);
+    PyObject *vitem = vl->ob_item[i];
+    PyObject *witem = wl->ob_item[i];
+    Py_INCREF(vitem);
+    Py_INCREF(witem);
+    PyObject *result = PyObject_RichCompare(vl->ob_item[i], wl->ob_item[i], op);
+    Py_DECREF(vitem);
+    Py_DECREF(witem);
+    return result;
 }
 
 static PyObject *
@@ -3413,7 +3452,9 @@ list___init___impl(PyListObject *self, PyObject *iterable)
 
     /* Empty previous contents */
     if (self->ob_item != NULL) {
+        Py_BEGIN_CRITICAL_SECTION(self);
         list_clear(self);
+        Py_END_CRITICAL_SECTION();
     }
     if (iterable != NULL) {
         if (_list_extend(self, iterable) < 0) {
@@ -3568,9 +3609,28 @@ list_subscript(PyObject* _self, PyObject* item)
     }
 }
 
+static Py_ssize_t
+adjust_slice_indexes(PyListObject *lst,
+                     Py_ssize_t *start, Py_ssize_t *stop,
+                     Py_ssize_t step)
+{
+    Py_ssize_t slicelength = PySlice_AdjustIndices(Py_SIZE(lst), start, stop,
+                                                   step);
+
+    /* Make sure s[5:2] = [..] inserts at the right place:
+        before 5, not before 2. */
+    if ((step < 0 && *start < *stop) ||
+        (step > 0 && *start > *stop))
+        *stop = *start;
+
+    return slicelength;
+}
+
 static int
-list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
+list_ass_subscript_lock_held(PyObject *_self, PyObject *item, PyObject *value)
 {
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(_self);
+
     PyListObject *self = (PyListObject *)_self;
     if (_PyIndex_Check(item)) {
         Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError);
@@ -3578,25 +3638,14 @@ list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
             return -1;
         if (i < 0)
             i += PyList_GET_SIZE(self);
-        return list_ass_item((PyObject *)self, i, value);
+        return list_ass_item_lock_held(self, i, value);
     }
     else if (PySlice_Check(item)) {
-        Py_ssize_t start, stop, step, slicelength;
+        Py_ssize_t start, stop, step;
 
         if (PySlice_Unpack(item, &start, &stop, &step) < 0) {
             return -1;
         }
-        slicelength = PySlice_AdjustIndices(Py_SIZE(self), &start, &stop,
-                                            step);
-
-        if (step == 1)
-            return list_ass_slice(self, start, stop, value);
-
-        /* Make sure s[5:2] = [..] inserts at the right place:
-           before 5, not before 2. */
-        if ((step < 0 && start < stop) ||
-            (step > 0 && start > stop))
-            stop = start;
 
         if (value == NULL) {
             /* delete slice */
@@ -3605,6 +3654,12 @@ list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
             Py_ssize_t i;
             int res;
 
+            Py_ssize_t slicelength = adjust_slice_indexes(self, &start, &stop,
+                                                          step);
+
+            if (step == 1)
+                return list_ass_slice_lock_held(self, start, stop, value);
+
             if (slicelength <= 0)
                 return 0;
 
@@ -3669,10 +3724,8 @@ list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
 
             /* protect against a[::-1] = a */
             if (self == (PyListObject*)value) {
-                Py_BEGIN_CRITICAL_SECTION(value);
-                seq = list_slice_lock_held((PyListObject*)value, 0,
+                seq = list_slice_lock_held((PyListObject *)value, 0,
                                             Py_SIZE(value));
-                Py_END_CRITICAL_SECTION();
             }
             else {
                 seq = PySequence_Fast(value,
@@ -3682,6 +3735,15 @@ list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
             if (!seq)
                 return -1;
 
+            Py_ssize_t slicelength = adjust_slice_indexes(self, &start, &stop,
+                                                          step);
+
+            if (step == 1) {
+                int res = list_ass_slice_lock_held(self, start, stop, seq);
+                Py_DECREF(seq);
+                return res;
+            }
+
             if (PySequence_Fast_GET_SIZE(seq) != slicelength) {
                 PyErr_Format(PyExc_ValueError,
                     "attempt to assign sequence of "
@@ -3733,6 +3795,24 @@ list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
     }
 }
 
+static int
+list_ass_subscript(PyObject *self, PyObject *item, PyObject *value)
+{
+    int res;
+#ifdef Py_GIL_DISABLED
+    if (PySlice_Check(item) && value != NULL && PyList_CheckExact(value)) {
+        Py_BEGIN_CRITICAL_SECTION2(self, value);
+        res = list_ass_subscript_lock_held(self, item, value);
+        Py_END_CRITICAL_SECTION2();
+        return res;
+    }
+#endif
+    Py_BEGIN_CRITICAL_SECTION(self);
+    res = list_ass_subscript_lock_held(self, item, value);
+    Py_END_CRITICAL_SECTION();
+    return res;
+}
+
 static PyMappingMethods list_as_mapping = {
     list_length,
     list_subscript,
diff --git a/Objects/longobject.c b/Objects/longobject.c
index ce3fd6b711dcd4..03d618aeedcf0a 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -483,11 +483,18 @@ PyLong_AsLongAndOverflow(PyObject *vv, int *overflow)
         do_decref = 1;
     }
     if (_PyLong_IsCompact(v)) {
-#if SIZEOF_LONG < SIZEOF_VOID_P
-        intptr_t tmp = _PyLong_CompactValue(v);
-        res = (long)tmp;
-        if (res != tmp) {
-            *overflow = tmp < 0 ? -1 : 1;
+#if SIZEOF_LONG < SIZEOF_SIZE_T
+        Py_ssize_t tmp = _PyLong_CompactValue(v);
+        if (tmp < LONG_MIN) {
+            *overflow = -1;
+            res = -1;
+        }
+        else if (tmp > LONG_MAX) {
+            *overflow = 1;
+            res = -1;
+        }
+        else {
+            res = (long)tmp;
         }
 #else
         res = _PyLong_CompactValue(v);
@@ -632,14 +639,15 @@ PyLong_AsUnsignedLong(PyObject *vv)
 
     v = (PyLongObject *)vv;
     if (_PyLong_IsNonNegativeCompact(v)) {
-#if SIZEOF_LONG < SIZEOF_VOID_P
-        intptr_t tmp = _PyLong_CompactValue(v);
+#if SIZEOF_LONG < SIZEOF_SIZE_T
+        size_t tmp = (size_t)_PyLong_CompactValue(v);
         unsigned long res = (unsigned long)tmp;
         if (res != tmp) {
             goto overflow;
         }
+        return res;
 #else
-        return _PyLong_CompactValue(v);
+        return (unsigned long)(size_t)_PyLong_CompactValue(v);
 #endif
     }
     if (_PyLong_IsNegative(v)) {
@@ -685,7 +693,7 @@ PyLong_AsSize_t(PyObject *vv)
 
     v = (PyLongObject *)vv;
     if (_PyLong_IsNonNegativeCompact(v)) {
-        return _PyLong_CompactValue(v);
+        return (size_t)_PyLong_CompactValue(v);
     }
     if (_PyLong_IsNegative(v)) {
         PyErr_SetString(PyExc_OverflowError,
@@ -722,7 +730,11 @@ _PyLong_AsUnsignedLongMask(PyObject *vv)
     }
     v = (PyLongObject *)vv;
     if (_PyLong_IsCompact(v)) {
-        return (unsigned long)_PyLong_CompactValue(v);
+#if SIZEOF_LONG < SIZEOF_SIZE_T
+        return (unsigned long)(size_t)_PyLong_CompactValue(v);
+#else
+        return (unsigned long)(long)_PyLong_CompactValue(v);
+#endif
     }
     i = _PyLong_DigitCount(v);
     int sign = _PyLong_NonCompactSign(v);
@@ -1116,13 +1128,17 @@ PyLong_AsNativeBytes(PyObject* vv, void* buffer, Py_ssize_t n, int flags)
     if (PyLong_Check(vv)) {
         v = (PyLongObject *)vv;
     }
-    else {
+    else if (flags != -1 && (flags & Py_ASNATIVEBYTES_ALLOW_INDEX)) {
         v = (PyLongObject *)_PyNumber_Index(vv);
         if (v == NULL) {
             return -1;
         }
         do_decref = 1;
     }
+    else {
+        PyErr_Format(PyExc_TypeError, "expect int, got %T", vv);
+        return -1;
+    }
 
     if ((flags != -1 && (flags & Py_ASNATIVEBYTES_REJECT_NEGATIVE))
         && _PyLong_IsNegative(v)) {
@@ -1524,7 +1540,18 @@ PyLong_AsUnsignedLongLong(PyObject *vv)
     v = (PyLongObject*)vv;
     if (_PyLong_IsNonNegativeCompact(v)) {
         res = 0;
-        bytes = _PyLong_CompactValue(v);
+#if SIZEOF_LONG_LONG < SIZEOF_SIZE_T
+        size_t tmp = (size_t)_PyLong_CompactValue(v);
+        bytes = (unsigned long long)tmp;
+        if (bytes != tmp) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "Python int too large to convert "
+                            "to C unsigned long long");
+            res = -1;
+        }
+#else
+        bytes = (unsigned long long)(size_t)_PyLong_CompactValue(v);
+#endif
     }
     else {
         res = _PyLong_AsByteArray((PyLongObject *)vv, (unsigned char *)&bytes,
@@ -1555,7 +1582,11 @@ _PyLong_AsUnsignedLongLongMask(PyObject *vv)
     }
     v = (PyLongObject *)vv;
     if (_PyLong_IsCompact(v)) {
-        return (unsigned long long)(signed long long)_PyLong_CompactValue(v);
+#if SIZEOF_LONG_LONG < SIZEOF_SIZE_T
+        return (unsigned long long)(size_t)_PyLong_CompactValue(v);
+#else
+        return (unsigned long long)(long long)_PyLong_CompactValue(v);
+#endif
     }
     i = _PyLong_DigitCount(v);
     sign = _PyLong_NonCompactSign(v);
@@ -1627,7 +1658,22 @@ PyLong_AsLongLongAndOverflow(PyObject *vv, int *overflow)
         do_decref = 1;
     }
     if (_PyLong_IsCompact(v)) {
+#if SIZEOF_LONG_LONG < SIZEOF_SIZE_T
+        Py_ssize_t tmp = _PyLong_CompactValue(v);
+        if (tmp < LLONG_MIN) {
+            *overflow = -1;
+            res = -1;
+        }
+        else if (tmp > LLONG_MAX) {
+            *overflow = 1;
+            res = -1;
+        }
+        else {
+            res = (long long)tmp;
+        }
+#else
         res = _PyLong_CompactValue(v);
+#endif
     }
     else {
         i = _PyLong_DigitCount(v);
@@ -3564,7 +3610,7 @@ long_hash(PyLongObject *v)
     int sign;
 
     if (_PyLong_IsCompact(v)) {
-        x = _PyLong_CompactValue(v);
+        x = (Py_uhash_t)_PyLong_CompactValue(v);
         if (x == (Py_uhash_t)-1) {
             x = (Py_uhash_t)-2;
         }
@@ -6488,7 +6534,7 @@ PyDoc_STRVAR(long_doc,
 int(x, base=10) -> integer\n\
 \n\
 Convert a number or string to an integer, or return 0 if no arguments\n\
-are given.  If x is a number, return x.__int__().  For floating point\n\
+are given.  If x is a number, return x.__int__().  For floating-point\n\
 numbers, this truncates towards zero.\n\
 \n\
 If x is not a number or if base is given, then x must be a string,\n\
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
index 5caa6504272301..b1a58d6b40ed89 100644
--- a/Objects/memoryobject.c
+++ b/Objects/memoryobject.c
@@ -109,8 +109,6 @@ mbuf_release(_PyManagedBufferObject *self)
     if (self->flags&_Py_MANAGED_BUFFER_RELEASED)
         return;
 
-    /* NOTE: at this point self->exports can still be > 0 if this function
-       is called from mbuf_clear() to break up a reference cycle. */
     self->flags |= _Py_MANAGED_BUFFER_RELEASED;
 
     /* PyBuffer_Release() decrements master->obj and sets it to NULL. */
@@ -268,7 +266,7 @@ PyTypeObject _PyManagedBuffer_Type = {
 /* Assumptions: ndim >= 1. The macro tests for a corner case that should
    perhaps be explicitly forbidden in the PEP. */
 #define HAVE_SUBOFFSETS_IN_LAST_DIM(view) \
-    (view->suboffsets && view->suboffsets[dest->ndim-1] >= 0)
+    (view->suboffsets && view->suboffsets[view->ndim-1] >= 0)
 
 static inline int
 last_dim_is_contiguous(const Py_buffer *dest, const Py_buffer *src)
@@ -1096,32 +1094,19 @@ PyBuffer_ToContiguous(void *buf, const Py_buffer *src, Py_ssize_t len, char orde
 /* Inform the managed buffer that this particular memoryview will not access
    the underlying buffer again. If no other memoryviews are registered with
    the managed buffer, the underlying buffer is released instantly and
-   marked as inaccessible for both the memoryview and the managed buffer.
-
-   This function fails if the memoryview itself has exported buffers. */
-static int
+   marked as inaccessible for both the memoryview and the managed buffer. */
+static void
 _memory_release(PyMemoryViewObject *self)
 {
+    assert(self->exports == 0);
     if (self->flags & _Py_MEMORYVIEW_RELEASED)
-        return 0;
+        return;
 
-    if (self->exports == 0) {
-        self->flags |= _Py_MEMORYVIEW_RELEASED;
-        assert(self->mbuf->exports > 0);
-        if (--self->mbuf->exports == 0)
-            mbuf_release(self->mbuf);
-        return 0;
+    self->flags |= _Py_MEMORYVIEW_RELEASED;
+    assert(self->mbuf->exports > 0);
+    if (--self->mbuf->exports == 0) {
+        mbuf_release(self->mbuf);
     }
-    if (self->exports > 0) {
-        PyErr_Format(PyExc_BufferError,
-            "memoryview has %zd exported buffer%s", self->exports,
-            self->exports==1 ? "" : "s");
-        return -1;
-    }
-
-    PyErr_SetString(PyExc_SystemError,
-                    "_memory_release(): negative export count");
-    return -1;
 }
 
 /*[clinic input]
@@ -1134,9 +1119,21 @@ static PyObject *
 memoryview_release_impl(PyMemoryViewObject *self)
 /*[clinic end generated code: output=d0b7e3ba95b7fcb9 input=bc71d1d51f4a52f0]*/
 {
-    if (_memory_release(self) < 0)
+    if (self->exports == 0) {
+        _memory_release(self);
+        Py_RETURN_NONE;
+    }
+
+    if (self->exports > 0) {
+        PyErr_Format(PyExc_BufferError,
+            "memoryview has %zd exported buffer%s", self->exports,
+            self->exports==1 ? "" : "s");
         return NULL;
-    Py_RETURN_NONE;
+    }
+
+    PyErr_SetString(PyExc_SystemError,
+                    "memoryview: negative export count");
+    return NULL;
 }
 
 static void
@@ -1145,7 +1142,7 @@ memory_dealloc(PyObject *_self)
     PyMemoryViewObject *self = (PyMemoryViewObject *)_self;
     assert(self->exports == 0);
     _PyObject_GC_UNTRACK(self);
-    (void)_memory_release(self);
+    _memory_release(self);
     Py_CLEAR(self->mbuf);
     if (self->weakreflist != NULL)
         PyObject_ClearWeakRefs((PyObject *) self);
@@ -1164,8 +1161,10 @@ static int
 memory_clear(PyObject *_self)
 {
     PyMemoryViewObject *self = (PyMemoryViewObject *)_self;
-    (void)_memory_release(self);
-    Py_CLEAR(self->mbuf);
+    if (self->exports == 0) {
+        _memory_release(self);
+        Py_CLEAR(self->mbuf);
+    }
     return 0;
 }
 
@@ -3356,6 +3355,7 @@ memory_iter(PyObject *seq)
         PyErr_BadInternalCall();
         return NULL;
     }
+    CHECK_RELEASED(seq);
     PyMemoryViewObject *obj = (PyMemoryViewObject *)seq;
     int ndims = obj->view.ndim;
     if (ndims == 0) {
diff --git a/Objects/mimalloc/bitmap.h b/Objects/mimalloc/bitmap.h
index 9ba15d5d6f09ea..d5b15dab7763d9 100644
--- a/Objects/mimalloc/bitmap.h
+++ b/Objects/mimalloc/bitmap.h
@@ -72,7 +72,7 @@ bool _mi_bitmap_try_find_claim_field(mi_bitmap_t bitmap, size_t idx, const size_
 // For now, `count` can be at most MI_BITMAP_FIELD_BITS and will never cross fields.
 bool _mi_bitmap_try_find_from_claim(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_index_t* bitmap_idx);
 
-// Like _mi_bitmap_try_find_from_claim but with an extra predicate that must be fullfilled
+// Like _mi_bitmap_try_find_from_claim but with an extra predicate that must be fulfilled
 typedef bool (mi_cdecl *mi_bitmap_pred_fun_t)(mi_bitmap_index_t bitmap_idx, void* pred_arg);
 bool _mi_bitmap_try_find_from_claim_pred(mi_bitmap_t bitmap, const size_t bitmap_fields, const size_t start_field_idx, const size_t count, mi_bitmap_pred_fun_t pred_fun, void* pred_arg, mi_bitmap_index_t* bitmap_idx);
 
diff --git a/Objects/mimalloc/init.c b/Objects/mimalloc/init.c
index cb0ef6642803cc..81b241063ff40f 100644
--- a/Objects/mimalloc/init.c
+++ b/Objects/mimalloc/init.c
@@ -560,7 +560,7 @@ void mi_process_init(void) mi_attr_noexcept {
   _mi_verbose_message("secure level: %d\n", MI_SECURE);
   _mi_verbose_message("mem tracking: %s\n", MI_TRACK_TOOL);
   #if MI_TSAN
-  _mi_verbose_message("thread santizer enabled\n");
+  _mi_verbose_message("thread sanitizer enabled\n");
   #endif
   mi_thread_init();
 
diff --git a/Objects/mimalloc/os.c b/Objects/mimalloc/os.c
index f3bc7184c41c5b..c9103168c12507 100644
--- a/Objects/mimalloc/os.c
+++ b/Objects/mimalloc/os.c
@@ -115,8 +115,12 @@ void* _mi_os_get_aligned_hint(size_t try_alignment, size_t size)
   if (hint == 0 || hint > MI_HINT_MAX) {   // wrap or initialize
     uintptr_t init = MI_HINT_BASE;
     #if (MI_SECURE>0 || MI_DEBUG==0)       // security: randomize start of aligned allocations unless in debug mode
-    uintptr_t r = _mi_heap_random_next(mi_prim_get_default_heap());
-    init = init + ((MI_SEGMENT_SIZE * ((r>>17) & 0xFFFFF)) % MI_HINT_AREA);  // (randomly 20 bits)*4MiB == 0 to 4TiB
+    mi_heap_t* heap = mi_prim_get_default_heap();
+    // gh-123022: default heap may not be initialized in CPython in background threads
+    if (mi_heap_is_initialized(heap)) {
+      uintptr_t r = _mi_heap_random_next(heap);
+      init = init + ((MI_SEGMENT_SIZE * ((r>>17) & 0xFFFFF)) % MI_HINT_AREA);  // (randomly 20 bits)*4MiB == 0 to 4TiB
+    }
     #endif
     uintptr_t expected = hint + size;
     mi_atomic_cas_strong_acq_rel(&aligned_base, &expected, init);
@@ -553,8 +557,12 @@ static uint8_t* mi_os_claim_huge_pages(size_t pages, size_t* total_size) {
       // Initialize the start address after the 32TiB area
       start = ((uintptr_t)32 << 40);  // 32TiB virtual start address
     #if (MI_SECURE>0 || MI_DEBUG==0)      // security: randomize start of huge pages unless in debug mode
-      uintptr_t r = _mi_heap_random_next(mi_prim_get_default_heap());
-      start = start + ((uintptr_t)MI_HUGE_OS_PAGE_SIZE * ((r>>17) & 0x0FFF));  // (randomly 12bits)*1GiB == between 0 to 4TiB
+      mi_heap_t* heap = mi_prim_get_default_heap();
+      // gh-123022: default heap may not be initialized in CPython in background threads
+      if (mi_heap_is_initialized(heap)) {
+        uintptr_t r = _mi_heap_random_next(heap);
+        start = start + ((uintptr_t)MI_HUGE_OS_PAGE_SIZE * ((r>>17) & 0x0FFF));  // (randomly 12bits)*1GiB == between 0 to 4TiB
+      }
     #endif
     }
     end = start + size;
diff --git a/Objects/mimalloc/prim/unix/prim.c b/Objects/mimalloc/prim/unix/prim.c
index c6ea05bbe7a2ac..4d3fb65e954407 100644
--- a/Objects/mimalloc/prim/unix/prim.c
+++ b/Objects/mimalloc/prim/unix/prim.c
@@ -27,6 +27,7 @@ terms of the MIT license. A copy of the license can be found in the file
 
 #include <sys/mman.h>  // mmap
 #include <unistd.h>    // sysconf
+#include <fcntl.h>     // open, close, read, access
 
 #if defined(__linux__)
   #include <features.h>
@@ -50,7 +51,7 @@ terms of the MIT license. A copy of the license can be found in the file
   #include <sys/sysctl.h>
 #endif
 
-#if !defined(__HAIKU__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(_AIX) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__sun)
+#if !defined(__HAIKU__) && !defined(__APPLE__) && !defined(__CYGWIN__) && !defined(_AIX) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__sun) && !defined(__NetBSD__)
   #define MI_HAS_SYSCALL_H
   #include <sys/syscall.h>
 #endif
@@ -76,7 +77,7 @@ static int mi_prim_access(const char *fpath, int mode) {
   return syscall(SYS_access,fpath,mode);
 }
 
-#elif !defined(__APPLE__) && !defined(_AIX) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__sun) // avoid unused warnings
+#elif !defined(__APPLE__) && !defined(_AIX) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__sun) && !defined(__NetBSD__) // avoid unused warnings
 
 static int mi_prim_open(const char* fpath, int open_flags) {
   return open(fpath,open_flags);
diff --git a/Objects/mimalloc/segment-map.c b/Objects/mimalloc/segment-map.c
index 3cd2127e56c1a7..5141f2e1b1dffa 100644
--- a/Objects/mimalloc/segment-map.c
+++ b/Objects/mimalloc/segment-map.c
@@ -84,7 +84,7 @@ static mi_segment_t* _mi_segment_of(const void* p) {
   // TODO: maintain max/min allocated range for efficiency for more efficient rejection of invalid pointers?
 
   // search downwards for the first segment in case it is an interior pointer
-  // could be slow but searches in MI_INTPTR_SIZE * MI_SEGMENT_SIZE (512MiB) steps trough
+  // could be slow but searches in MI_INTPTR_SIZE * MI_SEGMENT_SIZE (512MiB) steps through
   // valid huge objects
   // note: we could maintain a lowest index to speed up the path for invalid pointers?
   size_t lobitidx;
diff --git a/Objects/moduleobject.c b/Objects/moduleobject.c
index 46995b948a28e7..a9065325af5718 100644
--- a/Objects/moduleobject.c
+++ b/Objects/moduleobject.c
@@ -250,7 +250,7 @@ _PyModule_CreateInitialized(PyModuleDef* module, int module_api_version)
         }
     }
     m->md_def = module;
-#ifdef Py_GIL_DISABLE
+#ifdef Py_GIL_DISABLED
     m->md_gil = Py_MOD_GIL_USED;
 #endif
     return (PyObject*)m;
@@ -823,15 +823,15 @@ _PyModuleSpec_IsUninitializedSubmodule(PyObject *spec, PyObject *name)
     return rc;
 }
 
-static int
-_get_file_origin_from_spec(PyObject *spec, PyObject **p_origin)
+int
+_PyModuleSpec_GetFileOrigin(PyObject *spec, PyObject **p_origin)
 {
     PyObject *has_location = NULL;
     int rc = PyObject_GetOptionalAttr(spec, &_Py_ID(has_location), &has_location);
     if (rc <= 0) {
         return rc;
     }
-    // If origin is not a location, or doesn't exist, or is not a str), we could consider falling
+    // If origin is not a location, or doesn't exist, or is not a str, we could consider falling
     // back to module.__file__. But the cases in which module.__file__ is not __spec__.origin
     // are cases in which we probably shouldn't be guessing.
     rc = PyObject_IsTrue(has_location);
@@ -854,8 +854,8 @@ _get_file_origin_from_spec(PyObject *spec, PyObject **p_origin)
     return 1;
 }
 
-static int
-_is_module_possibly_shadowing(PyObject *origin)
+int
+_PyModule_IsPossiblyShadowing(PyObject *origin)
 {
     // origin must be a unicode subtype
     // Returns 1 if the module at origin could be shadowing a module of the
@@ -980,11 +980,11 @@ _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress)
     }
 
     PyObject *origin = NULL;
-    if (_get_file_origin_from_spec(spec, &origin) < 0) {
+    if (_PyModuleSpec_GetFileOrigin(spec, &origin) < 0) {
         goto done;
     }
 
-    int is_possibly_shadowing = _is_module_possibly_shadowing(origin);
+    int is_possibly_shadowing = _PyModule_IsPossiblyShadowing(origin);
     if (is_possibly_shadowing < 0) {
         goto done;
     }
@@ -1005,20 +1005,23 @@ _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress)
                     "module '%U' has no attribute '%U' "
                     "(consider renaming '%U' since it has the same "
                     "name as the standard library module named '%U' "
-                    "and the import system gives it precedence)",
+                    "and prevents importing that standard library module)",
                     mod_name, name, origin, mod_name);
     }
     else {
         int rc = _PyModuleSpec_IsInitializing(spec);
-        if (rc > 0) {
+        if (rc < 0) {
+            goto done;
+        }
+        else if (rc > 0) {
             if (is_possibly_shadowing) {
                 assert(origin);
-                // For third-party modules, only mention the possibility of
+                // For non-stdlib modules, only mention the possibility of
                 // shadowing if the module is being initialized.
                 PyErr_Format(PyExc_AttributeError,
                             "module '%U' has no attribute '%U' "
                             "(consider renaming '%U' if it has the same name "
-                            "as a third-party module you intended to import)",
+                            "as a library you intended to import)",
                             mod_name, name, origin);
             }
             else if (origin) {
@@ -1036,7 +1039,8 @@ _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress)
                             mod_name, name);
             }
         }
-        else if (rc == 0) {
+        else {
+            assert(rc == 0);
             rc = _PyModuleSpec_IsUninitializedSubmodule(spec, name);
             if (rc > 0) {
                 PyErr_Format(PyExc_AttributeError,
diff --git a/Objects/namespaceobject.c b/Objects/namespaceobject.c
index 5b7547103a2b3f..4ef3bd92f5a569 100644
--- a/Objects/namespaceobject.c
+++ b/Objects/namespaceobject.c
@@ -141,6 +141,10 @@ namespace_repr(PyObject *ns)
             goto error;
     }
 
+    if (PyErr_Occurred()) {
+        goto error;
+    }
+
     separator = PyUnicode_FromString(", ");
     if (separator == NULL)
         goto error;
diff --git a/Objects/object.c b/Objects/object.c
index 8ad0389cbc7626..a80d20c182ae0b 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -169,6 +169,48 @@ _PyDebug_PrintTotalRefs(void) {
 #define REFCHAIN(interp) interp->object_state.refchain
 #define REFCHAIN_VALUE ((void*)(uintptr_t)1)
 
+static inline int
+has_own_refchain(PyInterpreterState *interp)
+{
+    if (interp->feature_flags & Py_RTFLAGS_USE_MAIN_OBMALLOC) {
+        return (_Py_IsMainInterpreter(interp)
+            || _PyInterpreterState_Main() == NULL);
+    }
+    return 1;
+}
+
+static int
+refchain_init(PyInterpreterState *interp)
+{
+    if (!has_own_refchain(interp)) {
+        // Legacy subinterpreters share a refchain with the main interpreter.
+        REFCHAIN(interp) = REFCHAIN(_PyInterpreterState_Main());
+        return 0;
+    }
+    _Py_hashtable_allocator_t alloc = {
+        // Don't use default PyMem_Malloc() and PyMem_Free() which
+        // require the caller to hold the GIL.
+        .malloc = PyMem_RawMalloc,
+        .free = PyMem_RawFree,
+    };
+    REFCHAIN(interp) = _Py_hashtable_new_full(
+        _Py_hashtable_hash_ptr, _Py_hashtable_compare_direct,
+        NULL, NULL, &alloc);
+    if (REFCHAIN(interp) == NULL) {
+        return -1;
+    }
+    return 0;
+}
+
+static void
+refchain_fini(PyInterpreterState *interp)
+{
+    if (has_own_refchain(interp) && REFCHAIN(interp) != NULL) {
+        _Py_hashtable_destroy(REFCHAIN(interp));
+    }
+    REFCHAIN(interp) = NULL;
+}
+
 bool
 _PyRefchain_IsTraced(PyInterpreterState *interp, PyObject *obj)
 {
@@ -318,8 +360,10 @@ is_dead(PyObject *o)
 }
 # endif
 
-void
-_Py_DecRefSharedDebug(PyObject *o, const char *filename, int lineno)
+// Decrement the shared reference count of an object. Return 1 if the object
+// is dead and should be deallocated, 0 otherwise.
+static int
+_Py_DecRefSharedIsDead(PyObject *o, const char *filename, int lineno)
 {
     // Should we queue the object for the owning thread to merge?
     int should_queue;
@@ -360,6 +404,15 @@ _Py_DecRefSharedDebug(PyObject *o, const char *filename, int lineno)
     }
     else if (new_shared == _Py_REF_MERGED) {
         // refcount is zero AND merged
+        return 1;
+    }
+    return 0;
+}
+
+void
+_Py_DecRefSharedDebug(PyObject *o, const char *filename, int lineno)
+{
+    if (_Py_DecRefSharedIsDead(o, filename, lineno)) {
         _Py_Dealloc(o);
     }
 }
@@ -375,7 +428,6 @@ _Py_MergeZeroLocalRefcount(PyObject *op)
 {
     assert(op->ob_ref_local == 0);
 
-    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
     Py_ssize_t shared = _Py_atomic_load_ssize_acquire(&op->ob_ref_shared);
     if (shared == 0) {
         // Fast-path: shared refcount is zero (including flags)
@@ -383,6 +435,11 @@ _Py_MergeZeroLocalRefcount(PyObject *op)
         return;
     }
 
+    // gh-121794: This must be before the store to `ob_ref_shared` (gh-119999),
+    // but should outside the fast-path to maintain the invariant that
+    // a zero `ob_tid` implies a merged refcount.
+    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
+
     // Slow-path: atomically set the flags (low two bits) to _Py_REF_MERGED.
     Py_ssize_t new_shared;
     do {
@@ -401,26 +458,49 @@ Py_ssize_t
 _Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra)
 {
     assert(!_Py_IsImmortal(op));
+
+#ifdef Py_REF_DEBUG
+    _Py_AddRefTotal(_PyThreadState_GET(), extra);
+#endif
+
+    // gh-119999: Write to ob_ref_local and ob_tid before merging the refcount.
+    Py_ssize_t local = (Py_ssize_t)op->ob_ref_local;
+    _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0);
+    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
+
     Py_ssize_t refcnt;
     Py_ssize_t new_shared;
     Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
     do {
         refcnt = Py_ARITHMETIC_RIGHT_SHIFT(Py_ssize_t, shared, _Py_REF_SHARED_SHIFT);
-        refcnt += (Py_ssize_t)op->ob_ref_local;
+        refcnt += local;
         refcnt += extra;
 
         new_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED);
     } while (!_Py_atomic_compare_exchange_ssize(&op->ob_ref_shared,
                                                 &shared, new_shared));
-
-#ifdef Py_REF_DEBUG
-    _Py_AddRefTotal(_PyThreadState_GET(), extra);
-#endif
-
-    _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0);
-    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
     return refcnt;
 }
+
+// The more complicated "slow" path for undoing the resurrection of an object.
+int
+_PyObject_ResurrectEndSlow(PyObject *op)
+{
+    if (_Py_IsImmortal(op)) {
+        return 1;
+    }
+    if (_Py_IsOwnedByCurrentThread(op)) {
+        // If the object is owned by the current thread, give up ownership and
+        // merge the refcount. This isn't necessary in all cases, but it
+        // simplifies the implementation.
+        Py_ssize_t refcount = _Py_ExplicitMergeRefcount(op, -1);
+        return refcount != 0;
+    }
+    int is_dead = _Py_DecRefSharedIsDead(op, NULL, 0);
+    return !is_dead;
+}
+
+
 #endif  /* Py_GIL_DISABLED */
 
 
@@ -499,7 +579,7 @@ PyObject_CallFinalizerFromDealloc(PyObject *self)
     }
 
     /* Temporarily resurrect the object. */
-    Py_SET_REFCNT(self, 1);
+    _PyObject_ResurrectStart(self);
 
     PyObject_CallFinalizer(self);
 
@@ -509,8 +589,7 @@ PyObject_CallFinalizerFromDealloc(PyObject *self)
 
     /* Undo the temporary resurrection; can't use DECREF here, it would
      * cause a recursive call. */
-    Py_SET_REFCNT(self, Py_REFCNT(self) - 1);
-    if (Py_REFCNT(self) == 0) {
+    if (!_PyObject_ResurrectEnd(self)) {
         return 0;         /* this is the normal path out */
     }
 
@@ -528,6 +607,7 @@ int
 PyObject_Print(PyObject *op, FILE *fp, int flags)
 {
     int ret = 0;
+    int write_error = 0;
     if (PyErr_CheckSignals())
         return -1;
 #ifdef USE_STACKCHECK
@@ -566,14 +646,20 @@ PyObject_Print(PyObject *op, FILE *fp, int flags)
                     ret = -1;
                 }
                 else {
-                    fwrite(t, 1, len, fp);
+                    /* Versions of Android and OpenBSD from before 2023 fail to
+                       set the `ferror` indicator when writing to a read-only
+                       stream, so we need to check the return value.
+                       (https://github.com/openbsd/src/commit/fc99cf9338942ecd9adc94ea08bf6188f0428c15) */
+                    if (fwrite(t, 1, len, fp) != (size_t)len) {
+                        write_error = 1;
+                    }
                 }
                 Py_DECREF(s);
             }
         }
     }
     if (ret == 0) {
-        if (ferror(fp)) {
+        if (write_error || ferror(fp)) {
             PyErr_SetFromErrno(PyExc_OSError);
             clearerr(fp);
             ret = -1;
@@ -1323,7 +1409,8 @@ PyObject_SetAttr(PyObject *v, PyObject *name, PyObject *value)
     }
     Py_INCREF(name);
 
-    PyUnicode_InternInPlace(&name);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternMortal(interp, &name);
     if (tp->tp_setattro != NULL) {
         err = (*tp->tp_setattro)(v, name, value);
         Py_DECREF(name);
@@ -2156,16 +2243,7 @@ PyStatus
 _PyObject_InitState(PyInterpreterState *interp)
 {
 #ifdef Py_TRACE_REFS
-    _Py_hashtable_allocator_t alloc = {
-        // Don't use default PyMem_Malloc() and PyMem_Free() which
-        // require the caller to hold the GIL.
-        .malloc = PyMem_RawMalloc,
-        .free = PyMem_RawFree,
-    };
-    REFCHAIN(interp) = _Py_hashtable_new_full(
-        _Py_hashtable_hash_ptr, _Py_hashtable_compare_direct,
-        NULL, NULL, &alloc);
-    if (REFCHAIN(interp) == NULL) {
+    if (refchain_init(interp) < 0) {
         return _PyStatus_NO_MEMORY();
     }
 #endif
@@ -2176,8 +2254,7 @@ void
 _PyObject_FiniState(PyInterpreterState *interp)
 {
 #ifdef Py_TRACE_REFS
-    _Py_hashtable_destroy(REFCHAIN(interp));
-    REFCHAIN(interp) = NULL;
+    refchain_fini(interp);
 #endif
 }
 
@@ -2309,6 +2386,7 @@ static PyTypeObject* static_types[] = {
     &_PyWeakref_ProxyType,
     &_PyWeakref_RefType,
     &_PyTypeAlias_Type,
+    &_PyNoDefault_Type,
 
     // subclasses: _PyTypes_FiniTypes() deallocates them before their base
     // class
@@ -2337,6 +2415,14 @@ _PyTypes_InitTypes(PyInterpreterState *interp)
         }
     }
 
+    // Cache __reduce__ from PyBaseObject_Type object
+    PyObject *baseobj_dict = _PyType_GetDict(&PyBaseObject_Type);
+    PyObject *baseobj_reduce = PyDict_GetItemWithError(baseobj_dict, &_Py_ID(__reduce__));
+    if (baseobj_reduce == NULL && PyErr_Occurred()) {
+        return _PyStatus_ERR("Can't get __reduce__ from base object");
+    }
+    _Py_INTERP_CACHED_OBJECT(interp, objreduce) = baseobj_reduce;
+
     // Must be after static types are initialized
     if (_Py_initialize_generic(interp) < 0) {
         return _PyStatus_ERR("Can't initialize generic types");
@@ -2359,7 +2445,7 @@ _PyTypes_FiniTypes(PyInterpreterState *interp)
     // their base classes.
     for (Py_ssize_t i=Py_ARRAY_LENGTH(static_types)-1; i>=0; i--) {
         PyTypeObject *type = static_types[i];
-        _PyStaticType_Dealloc(interp, type);
+        _PyStaticType_FiniBuiltin(interp, type);
     }
 }
 
@@ -2373,7 +2459,7 @@ new_reference(PyObject *op)
 #else
     op->ob_tid = _Py_ThreadId();
     op->_padding = 0;
-    op->ob_mutex = (struct _PyMutex){ 0 };
+    op->ob_mutex = (PyMutex){ 0 };
     op->ob_gc_bits = 0;
     op->ob_ref_local = 1;
     op->ob_ref_shared = 0;
@@ -2381,11 +2467,7 @@ new_reference(PyObject *op)
 #ifdef Py_TRACE_REFS
     _Py_AddToAllObjects(op);
 #endif
-    struct _reftracer_runtime_state *tracer = &_PyRuntime.ref_tracer;
-    if (tracer->tracer_func != NULL) {
-        void* data = tracer->tracer_data;
-        tracer->tracer_func(op, PyRefTracer_CREATE, data);
-    }
+    _PyReftracerTrack(op, PyRefTracer_CREATE);
 }
 
 void
@@ -2406,6 +2488,13 @@ _Py_NewReferenceNoTotal(PyObject *op)
 void
 _Py_SetImmortalUntracked(PyObject *op)
 {
+#ifdef Py_DEBUG
+    // For strings, use _PyUnicode_InternImmortal instead.
+    if (PyUnicode_CheckExact(op)) {
+        assert(PyUnicode_CHECK_INTERNED(op) == SSTATE_INTERNED_IMMORTAL
+            || PyUnicode_CHECK_INTERNED(op) == SSTATE_INTERNED_IMMORTAL_STATIC);
+    }
+#endif
 #ifdef Py_GIL_DISABLED
     op->ob_tid = _Py_UNOWNED_TID;
     op->ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL;
@@ -2431,14 +2520,14 @@ _PyObject_SetDeferredRefcount(PyObject *op)
     assert(PyType_IS_GC(Py_TYPE(op)));
     assert(_Py_IsOwnedByCurrentThread(op));
     assert(op->ob_ref_shared == 0);
+    _PyObject_SET_GC_BITS(op, _PyGC_BITS_DEFERRED);
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (interp->gc.immortalize.enabled) {
+    if (_Py_atomic_load_int_relaxed(&interp->gc.immortalize) == 1) {
         // gh-117696: immortalize objects instead of using deferred reference
         // counting for now.
         _Py_SetImmortal(op);
         return;
     }
-    op->ob_gc_bits |= _PyGC_BITS_DEFERRED;
     op->ob_ref_local += 1;
     op->ob_ref_shared = _Py_REF_QUEUED;
 #endif
@@ -2450,10 +2539,6 @@ _Py_ResurrectReference(PyObject *op)
 #ifdef Py_TRACE_REFS
     _Py_AddToAllObjects(op);
 #endif
-    if (_PyRuntime.ref_tracer.tracer_func != NULL) {
-        void* data = _PyRuntime.ref_tracer.tracer_data;
-        _PyRuntime.ref_tracer.tracer_func(op, PyRefTracer_CREATE, data);
-    }
 }
 
 
@@ -2728,7 +2813,6 @@ _PyTrash_thread_deposit_object(PyThreadState *tstate, PyObject *op)
     _PyObject_ASSERT(op, !_PyObject_GC_IS_TRACKED(op));
     _PyObject_ASSERT(op, Py_REFCNT(op) == 0);
 #ifdef Py_GIL_DISABLED
-    _PyObject_ASSERT(op, op->ob_tid == 0);
     op->ob_tid = (uintptr_t)tstate->delete_later;
 #else
     _PyGCHead_SET_PREV(_Py_AS_GC(op), (PyGC_Head*)tstate->delete_later);
@@ -2761,6 +2845,7 @@ _PyTrash_thread_destroy_chain(PyThreadState *tstate)
 #ifdef Py_GIL_DISABLED
         tstate->delete_later = (PyObject*) op->ob_tid;
         op->ob_tid = 0;
+        _Py_atomic_store_ssize_relaxed(&op->ob_ref_shared, _Py_REF_MERGED);
 #else
         tstate->delete_later = (PyObject*) _PyGCHead_PREV(_Py_AS_GC(op));
 #endif
@@ -2843,15 +2928,10 @@ _Py_Dealloc(PyObject *op)
     Py_INCREF(type);
 #endif
 
-    struct _reftracer_runtime_state *tracer = &_PyRuntime.ref_tracer;
-    if (tracer->tracer_func != NULL) {
-        void* data = tracer->tracer_data;
-        tracer->tracer_func(op, PyRefTracer_DESTROY, data);
-    }
-
 #ifdef Py_TRACE_REFS
     _Py_ForgetReference(op);
 #endif
+    _PyReftracerTrack(op, PyRefTracer_DESTROY);
     (*dealloc)(op);
 
 #ifdef Py_DEBUG
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index 4fe195b63166c1..a9decc5dc1b1dd 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -386,8 +386,16 @@ _PyMem_ArenaFree(void *Py_UNUSED(ctx), void *ptr,
 )
 {
 #ifdef MS_WINDOWS
+    /* Unlike free(), VirtualFree() does not special-case NULL to noop. */
+    if (ptr == NULL) {
+        return;
+    }
     VirtualFree(ptr, 0, MEM_RELEASE);
 #elif defined(ARENAS_USE_MMAP)
+    /* Unlike free(), munmap() does not special-case NULL to noop. */
+    if (ptr == NULL) {
+        return;
+    }
     munmap(ptr, size);
 #else
     free(ptr);
diff --git a/Objects/odictobject.c b/Objects/odictobject.c
index 53f64fc81e7deb..858f0cbaf9ee00 100644
--- a/Objects/odictobject.c
+++ b/Objects/odictobject.c
@@ -796,6 +796,7 @@ _odict_clear_nodes(PyODictObject *od)
         _odictnode_DEALLOC(node);
         node = next;
     }
+    od->od_state++;
 }
 
 /* There isn't any memory management of nodes past this point. */
@@ -806,24 +807,40 @@ _odict_keys_equal(PyODictObject *a, PyODictObject *b)
 {
     _ODictNode *node_a, *node_b;
 
+    // keep operands' state to detect undesired mutations
+    const size_t state_a = a->od_state;
+    const size_t state_b = b->od_state;
+
     node_a = _odict_FIRST(a);
     node_b = _odict_FIRST(b);
     while (1) {
-        if (node_a == NULL && node_b == NULL)
+        if (node_a == NULL && node_b == NULL) {
             /* success: hit the end of each at the same time */
             return 1;
-        else if (node_a == NULL || node_b == NULL)
+        }
+        else if (node_a == NULL || node_b == NULL) {
             /* unequal length */
             return 0;
+        }
         else {
-            int res = PyObject_RichCompareBool(
-                                            (PyObject *)_odictnode_KEY(node_a),
-                                            (PyObject *)_odictnode_KEY(node_b),
-                                            Py_EQ);
-            if (res < 0)
+            PyObject *key_a = Py_NewRef(_odictnode_KEY(node_a));
+            PyObject *key_b = Py_NewRef(_odictnode_KEY(node_b));
+            int res = PyObject_RichCompareBool(key_a, key_b, Py_EQ);
+            Py_DECREF(key_a);
+            Py_DECREF(key_b);
+            if (res < 0) {
                 return res;
-            else if (res == 0)
+            }
+            else if (a->od_state != state_a || b->od_state != state_b) {
+                PyErr_SetString(PyExc_RuntimeError,
+                                "OrderedDict mutated during iteration");
+                return -1;
+            }
+            else if (res == 0) {
+                // This check comes after the check on the state
+                // in order for the exception to be set correctly.
                 return 0;
+            }
 
             /* otherwise it must match, so move on to the next one */
             node_a = _odictnode_NEXT(node_a);
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 68986bb6a6b557..e85b37f408630c 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -184,14 +184,14 @@ set_add_entry(PySetObject *so, PyObject *key, Py_hash_t hash)
   found_unused_or_dummy:
     if (freeslot == NULL)
         goto found_unused;
-    so->used++;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, so->used + 1);
     freeslot->key = key;
     freeslot->hash = hash;
     return 0;
 
   found_unused:
     so->fill++;
-    so->used++;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, so->used + 1);
     entry->key = key;
     entry->hash = hash;
     if ((size_t)so->fill*5 < mask*3)
@@ -357,7 +357,7 @@ set_discard_entry(PySetObject *so, PyObject *key, Py_hash_t hash)
     old_key = entry->key;
     entry->key = dummy;
     entry->hash = -1;
-    so->used--;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, so->used - 1);
     Py_DECREF(old_key);
     return DISCARD_FOUND;
 }
@@ -365,13 +365,9 @@ set_discard_entry(PySetObject *so, PyObject *key, Py_hash_t hash)
 static int
 set_add_key(PySetObject *so, PyObject *key)
 {
-    Py_hash_t hash;
-
-    if (!PyUnicode_CheckExact(key) ||
-        (hash = _PyASCIIObject_CAST(key)->hash) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return -1;
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return -1;
     }
     return set_add_entry(so, key, hash);
 }
@@ -379,13 +375,9 @@ set_add_key(PySetObject *so, PyObject *key)
 static int
 set_contains_key(PySetObject *so, PyObject *key)
 {
-    Py_hash_t hash;
-
-    if (!PyUnicode_CheckExact(key) ||
-        (hash = _PyASCIIObject_CAST(key)->hash) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return -1;
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return -1;
     }
     return set_contains_entry(so, key, hash);
 }
@@ -393,13 +385,9 @@ set_contains_key(PySetObject *so, PyObject *key)
 static int
 set_discard_key(PySetObject *so, PyObject *key)
 {
-    Py_hash_t hash;
-
-    if (!PyUnicode_CheckExact(key) ||
-        (hash = _PyASCIIObject_CAST(key)->hash) == -1) {
-        hash = PyObject_Hash(key);
-        if (hash == -1)
-            return -1;
+    Py_hash_t hash = _PyObject_HashFast(key);
+    if (hash == -1) {
+        return -1;
     }
     return set_discard_entry(so, key, hash);
 }
@@ -409,7 +397,7 @@ set_empty_to_minsize(PySetObject *so)
 {
     memset(so->smalltable, 0, sizeof(so->smalltable));
     so->fill = 0;
-    so->used = 0;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, 0);
     so->mask = PySet_MINSIZE - 1;
     so->table = so->smalltable;
     so->hash = -1;
@@ -627,7 +615,7 @@ set_merge_lock_held(PySetObject *so, PyObject *otherset)
             }
         }
         so->fill = other->fill;
-        so->used = other->used;
+        FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, other->used);
         return 0;
     }
 
@@ -636,7 +624,7 @@ set_merge_lock_held(PySetObject *so, PyObject *otherset)
         setentry *newtable = so->table;
         size_t newmask = (size_t)so->mask;
         so->fill = other->used;
-        so->used = other->used;
+        FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, other->used);
         for (i = other->mask + 1; i > 0 ; i--, other_entry++) {
             key = other_entry->key;
             if (key != NULL && key != dummy) {
@@ -690,7 +678,7 @@ set_pop_impl(PySetObject *so)
     key = entry->key;
     entry->key = dummy;
     entry->hash = -1;
-    so->used--;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(so->used, so->used - 1);
     so->finger = entry - so->table + 1;   /* next place to start */
     return key;
 }
@@ -1045,14 +1033,13 @@ set_update_internal(PySetObject *so, PyObject *other)
 set.update
     so: setobject
     *others as args: object
-    /
 
 Update the set, adding elements from all others.
 [clinic start generated code]*/
 
 static PyObject *
 set_update_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=34f6371704974c8a input=eb47c4fbaeb3286e]*/
+/*[clinic end generated code: output=34f6371704974c8a input=df4fe486e38cd337]*/
 {
     Py_ssize_t i;
 
@@ -1185,7 +1172,9 @@ set_swap_bodies(PySetObject *a, PySetObject *b)
     Py_hash_t h;
 
     t = a->fill;     a->fill   = b->fill;        b->fill  = t;
-    t = a->used;     a->used   = b->used;        b->used  = t;
+    t = a->used;
+    FT_ATOMIC_STORE_SSIZE_RELAXED(a->used, b->used);
+    FT_ATOMIC_STORE_SSIZE_RELAXED(b->used, t);
     t = a->mask;     a->mask   = b->mask;        b->mask  = t;
 
     u = a->table;
@@ -1273,14 +1262,13 @@ set_clear_impl(PySetObject *so)
 set.union
     so: setobject
     *others as args: object
-    /
 
 Return a new set with elements from the set and all others.
 [clinic start generated code]*/
 
 static PyObject *
 set_union_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=2c83d05a446a1477 input=2e2024fa1e40ac84]*/
+/*[clinic end generated code: output=2c83d05a446a1477 input=ddf088706e9577b2]*/
 {
     PySetObject *result;
     PyObject *other;
@@ -1423,14 +1411,13 @@ set_intersection(PySetObject *so, PyObject *other)
 set.intersection as set_intersection_multi
     so: setobject
     *others as args: object
-    /
 
 Return a new set with elements common to the set and all others.
 [clinic start generated code]*/
 
 static PyObject *
 set_intersection_multi_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=2406ef3387adbe2f input=04108ea6d7f0532b]*/
+/*[clinic end generated code: output=2406ef3387adbe2f input=0d9f3805ccbba6a4]*/
 {
     Py_ssize_t i;
 
@@ -1471,14 +1458,13 @@ set_intersection_update(PySetObject *so, PyObject *other)
 set.intersection_update as set_intersection_update_multi
     so: setobject
     *others as args: object
-    /
 
 Update the set, keeping only elements found in it and all others.
 [clinic start generated code]*/
 
 static PyObject *
 set_intersection_update_multi_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=251c1f729063609d input=ff8f119f97458d16]*/
+/*[clinic end generated code: output=251c1f729063609d input=223c1e086aa669a9]*/
 {
     PyObject *tmp;
 
@@ -1659,14 +1645,13 @@ set_difference_update_internal(PySetObject *so, PyObject *other)
 set.difference_update
     so: setobject
     *others as args: object
-    /
 
 Update the set, removing elements found in others.
 [clinic start generated code]*/
 
 static PyObject *
 set_difference_update_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=28685b2fc63e41c4 input=e7abb43c9f2c5a73]*/
+/*[clinic end generated code: output=28685b2fc63e41c4 input=024e6baa6fbcbb3d]*/
 {
     Py_ssize_t i;
 
@@ -1777,14 +1762,13 @@ set_difference(PySetObject *so, PyObject *other)
 set.difference as set_difference_multi
     so: setobject
     *others as args: object
-    /
 
 Return a new set with elements in the set that are not in the others.
 [clinic start generated code]*/
 
 static PyObject *
 set_difference_multi_impl(PySetObject *so, PyObject *args)
-/*[clinic end generated code: output=3130c3bb3cac873d input=d8ae9bb6d518ab95]*/
+/*[clinic end generated code: output=3130c3bb3cac873d input=ba78ea5f099e58df]*/
 {
     Py_ssize_t i;
     PyObject *result, *other;
diff --git a/Objects/structseq.c b/Objects/structseq.c
index ec5c5ab45ba813..ee3dbf9d4c047a 100644
--- a/Objects/structseq.c
+++ b/Objects/structseq.c
@@ -41,12 +41,20 @@ get_type_attr_as_size(PyTypeObject *tp, PyObject *name)
     get_type_attr_as_size(tp, &_Py_ID(n_sequence_fields))
 #define REAL_SIZE_TP(tp) \
     get_type_attr_as_size(tp, &_Py_ID(n_fields))
-#define REAL_SIZE(op) REAL_SIZE_TP(Py_TYPE(op))
+#define REAL_SIZE(op) get_real_size((PyObject *)op)
 
 #define UNNAMED_FIELDS_TP(tp) \
     get_type_attr_as_size(tp, &_Py_ID(n_unnamed_fields))
 #define UNNAMED_FIELDS(op) UNNAMED_FIELDS_TP(Py_TYPE(op))
 
+static Py_ssize_t
+get_real_size(PyObject *op)
+{
+    // Compute the real size from the visible size (i.e., Py_SIZE()) and the
+    // number of non-sequence fields accounted for in tp_basicsize.
+    Py_ssize_t hidden = Py_TYPE(op)->tp_basicsize - offsetof(PyStructSequence, ob_item);
+    return Py_SIZE(op) + hidden / sizeof(PyObject *);
+}
 
 PyObject *
 PyStructSequence_New(PyTypeObject *type)
@@ -120,6 +128,9 @@ structseq_dealloc(PyStructSequence *obj)
     PyObject_GC_UnTrack(obj);
 
     PyTypeObject *tp = Py_TYPE(obj);
+    // gh-122527: We can't use REAL_SIZE_TP() or any macros that access the
+    // type's dictionary here, because the dictionary may have already been
+    // cleared by the garbage collector.
     size = REAL_SIZE(obj);
     for (i = 0; i < size; ++i) {
         Py_XDECREF(obj->ob_item[i]);
@@ -565,10 +576,14 @@ initialize_members(PyStructSequence_Desc *desc,
 
 static void
 initialize_static_fields(PyTypeObject *type, PyStructSequence_Desc *desc,
-                         PyMemberDef *tp_members, unsigned long tp_flags)
+                         PyMemberDef *tp_members, Py_ssize_t n_members,
+                         unsigned long tp_flags)
 {
     type->tp_name = desc->name;
-    type->tp_basicsize = sizeof(PyStructSequence) - sizeof(PyObject *);
+    // Account for hidden members in tp_basicsize because they are not
+    // included in the variable size.
+    Py_ssize_t n_hidden = n_members - desc->n_in_sequence;
+    type->tp_basicsize = sizeof(PyStructSequence) + (n_hidden - 1) * sizeof(PyObject *);
     type->tp_itemsize = sizeof(PyObject *);
     type->tp_dealloc = (destructor)structseq_dealloc;
     type->tp_repr = (reprfunc)structseq_repr;
@@ -621,7 +636,7 @@ _PyStructSequence_InitBuiltinWithFlags(PyInterpreterState *interp,
         if (members == NULL) {
             goto error;
         }
-        initialize_static_fields(type, desc, members, tp_flags);
+        initialize_static_fields(type, desc, members, n_members, tp_flags);
 
         _Py_SetImmortal((PyObject *)type);
     }
@@ -684,7 +699,7 @@ PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)
     if (members == NULL) {
         return -1;
     }
-    initialize_static_fields(type, desc, members, 0);
+    initialize_static_fields(type, desc, members, n_members, 0);
     if (initialize_static_type(type, desc, n_members, n_unnamed_members) < 0) {
         PyMem_Free(members);
         return -1;
@@ -710,7 +725,7 @@ _PyStructSequence_FiniBuiltin(PyInterpreterState *interp, PyTypeObject *type)
     assert(type->tp_name != NULL);
     assert(type->tp_base == &PyTuple_Type);
     assert((type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN));
-    assert(_Py_IsImmortal(type));
+    assert(_Py_IsImmortalLoose(type));
 
     // Cannot delete a type if it still has subclasses
     if (_PyType_HasSubclasses(type)) {
@@ -718,7 +733,7 @@ _PyStructSequence_FiniBuiltin(PyInterpreterState *interp, PyTypeObject *type)
         return;
     }
 
-    _PyStaticType_Dealloc(interp, type);
+    _PyStaticType_FiniBuiltin(interp, type);
 
     if (_Py_IsMainInterpreter(interp)) {
         // Undo _PyStructSequence_InitBuiltinWithFlags().
@@ -760,7 +775,8 @@ _PyStructSequence_NewType(PyStructSequence_Desc *desc, unsigned long tp_flags)
     /* The name in this PyType_Spec is statically allocated so it is */
     /* expected that it'll outlive the PyType_Spec */
     spec.name = desc->name;
-    spec.basicsize = sizeof(PyStructSequence) - sizeof(PyObject *);
+    Py_ssize_t hidden = n_members - desc->n_in_sequence;
+    spec.basicsize = (int)(sizeof(PyStructSequence) + (hidden - 1) * sizeof(PyObject *));
     spec.itemsize = sizeof(PyObject *);
     spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | tp_flags;
     spec.slots = slots;
diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index 5ae1ee9a89af84..818814b663d534 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -942,6 +942,7 @@ _PyTuple_Resize(PyObject **pv, Py_ssize_t newsize)
     for (i = newsize; i < oldsize; i++) {
         Py_CLEAR(v->ob_item[i]);
     }
+    _PyReftracerTrack((PyObject *)v, PyRefTracer_DESTROY);
     sv = PyObject_GC_Resize(PyTupleObject, v, newsize);
     if (sv == NULL) {
         *pv = NULL;
@@ -1132,7 +1133,7 @@ maybe_freelist_pop(Py_ssize_t size)
         return NULL;
     }
     assert(size > 0);
-    if (size < PyTuple_MAXSAVESIZE) {
+    if (size <= PyTuple_MAXSAVESIZE) {
         Py_ssize_t index = size - 1;
         PyTupleObject *op = TUPLE_FREELIST.items[index];
         if (op != NULL) {
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 4b144fab5de8f1..bd79676b8e925f 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -62,24 +62,13 @@ class object "PyObject *" "&PyBaseObject_Type"
 // be released and reacquired during a subclass update if there's contention
 // on the subclass lock.
 #define TYPE_LOCK &PyInterpreterState_Get()->types.mutex
-#define BEGIN_TYPE_LOCK()                                               \
-    {                                                                   \
-        _PyCriticalSection _cs;                                         \
-        _PyCriticalSection_Begin(&_cs, TYPE_LOCK);                      \
+#define BEGIN_TYPE_LOCK() Py_BEGIN_CRITICAL_SECTION_MUT(TYPE_LOCK)
+#define END_TYPE_LOCK() Py_END_CRITICAL_SECTION()
 
-#define END_TYPE_LOCK()                                                 \
-        _PyCriticalSection_End(&_cs);                                   \
-    }
-
-#define BEGIN_TYPE_DICT_LOCK(d)                                         \
-    {                                                                   \
-        _PyCriticalSection2 _cs;                                        \
-        _PyCriticalSection2_Begin(&_cs, TYPE_LOCK,                      \
-                                  &_PyObject_CAST(d)->ob_mutex);        \
+#define BEGIN_TYPE_DICT_LOCK(d) \
+    Py_BEGIN_CRITICAL_SECTION2_MUT(TYPE_LOCK, &_PyObject_CAST(d)->ob_mutex)
 
-#define END_TYPE_DICT_LOCK()                                            \
-        _PyCriticalSection2_End(&_cs);                                  \
-    }
+#define END_TYPE_DICT_LOCK() Py_END_CRITICAL_SECTION2()
 
 #define ASSERT_TYPE_LOCK_HELD() \
     _Py_CRITICAL_SECTION_ASSERT_MUTEX_LOCKED(TYPE_LOCK)
@@ -131,93 +120,201 @@ type_from_ref(PyObject *ref)
 
 #ifndef NDEBUG
 static inline int
-static_builtin_index_is_set(PyTypeObject *self)
+managed_static_type_index_is_set(PyTypeObject *self)
 {
     return self->tp_subclasses != NULL;
 }
 #endif
 
 static inline size_t
-static_builtin_index_get(PyTypeObject *self)
+managed_static_type_index_get(PyTypeObject *self)
 {
-    assert(static_builtin_index_is_set(self));
+    assert(managed_static_type_index_is_set(self));
     /* We store a 1-based index so 0 can mean "not initialized". */
     return (size_t)self->tp_subclasses - 1;
 }
 
 static inline void
-static_builtin_index_set(PyTypeObject *self, size_t index)
+managed_static_type_index_set(PyTypeObject *self, size_t index)
 {
-    assert(index < _Py_MAX_STATIC_BUILTIN_TYPES);
+    assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES);
     /* We store a 1-based index so 0 can mean "not initialized". */
     self->tp_subclasses = (PyObject *)(index + 1);
 }
 
 static inline void
-static_builtin_index_clear(PyTypeObject *self)
+managed_static_type_index_clear(PyTypeObject *self)
 {
     self->tp_subclasses = NULL;
 }
 
-static inline static_builtin_state *
-static_builtin_state_get(PyInterpreterState *interp, PyTypeObject *self)
+static PyTypeObject *
+static_ext_type_lookup(PyInterpreterState *interp, size_t index,
+                       int64_t *p_interp_count)
 {
-    return &(interp->types.builtins[static_builtin_index_get(self)]);
+    assert(interp->runtime == &_PyRuntime);
+    assert(index < _Py_MAX_MANAGED_STATIC_EXT_TYPES);
+
+    size_t full_index = index + _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES;
+    int64_t interp_count =
+            _PyRuntime.types.managed_static.types[full_index].interp_count;
+    assert((interp_count == 0) ==
+            (_PyRuntime.types.managed_static.types[full_index].type == NULL));
+    *p_interp_count = interp_count;
+
+    PyTypeObject *type = interp->types.for_extensions.initialized[index].type;
+    if (type == NULL) {
+        return NULL;
+    }
+    assert(!interp->types.for_extensions.initialized[index].isbuiltin);
+    assert(type == _PyRuntime.types.managed_static.types[full_index].type);
+    assert(managed_static_type_index_is_set(type));
+    return type;
+}
+
+static managed_static_type_state *
+managed_static_type_state_get(PyInterpreterState *interp, PyTypeObject *self)
+{
+    // It's probably a builtin type.
+    size_t index = managed_static_type_index_get(self);
+    managed_static_type_state *state =
+            &(interp->types.builtins.initialized[index]);
+    if (state->type == self) {
+        return state;
+    }
+    if (index > _Py_MAX_MANAGED_STATIC_EXT_TYPES) {
+        return state;
+    }
+    return &(interp->types.for_extensions.initialized[index]);
 }
 
 /* For static types we store some state in an array on each interpreter. */
-static_builtin_state *
+managed_static_type_state *
 _PyStaticType_GetState(PyInterpreterState *interp, PyTypeObject *self)
 {
     assert(self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
-    return static_builtin_state_get(interp, self);
+    return managed_static_type_state_get(interp, self);
 }
 
 /* Set the type's per-interpreter state. */
 static void
-static_builtin_state_init(PyInterpreterState *interp, PyTypeObject *self)
+managed_static_type_state_init(PyInterpreterState *interp, PyTypeObject *self,
+                               int isbuiltin, int initial)
 {
-    if (_Py_IsMainInterpreter(interp)) {
-        assert(!static_builtin_index_is_set(self));
-        static_builtin_index_set(self, interp->types.num_builtins_initialized);
+    assert(interp->runtime == &_PyRuntime);
+
+    size_t index;
+    if (initial) {
+        assert(!managed_static_type_index_is_set(self));
+        if (isbuiltin) {
+            index = interp->types.builtins.num_initialized;
+            assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES);
+        }
+        else {
+            PyMutex_Lock(&interp->types.mutex);
+            index = interp->types.for_extensions.next_index;
+            interp->types.for_extensions.next_index++;
+            PyMutex_Unlock(&interp->types.mutex);
+            assert(index < _Py_MAX_MANAGED_STATIC_EXT_TYPES);
+        }
+        managed_static_type_index_set(self, index);
+    }
+    else {
+        index = managed_static_type_index_get(self);
+        if (isbuiltin) {
+            assert(index == interp->types.builtins.num_initialized);
+            assert(index < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES);
+        }
+        else {
+            assert(index < _Py_MAX_MANAGED_STATIC_EXT_TYPES);
+        }
+    }
+    size_t full_index = isbuiltin
+        ? index
+        : index + _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES;
+
+    assert((initial == 1) ==
+            (_PyRuntime.types.managed_static.types[full_index].interp_count == 0));
+    (void)_Py_atomic_add_int64(
+            &_PyRuntime.types.managed_static.types[full_index].interp_count, 1);
+
+    if (initial) {
+        assert(_PyRuntime.types.managed_static.types[full_index].type == NULL);
+        _PyRuntime.types.managed_static.types[full_index].type = self;
     }
     else {
-        assert(static_builtin_index_get(self) ==
-                interp->types.num_builtins_initialized);
+        assert(_PyRuntime.types.managed_static.types[full_index].type == self);
     }
-    static_builtin_state *state = static_builtin_state_get(interp, self);
 
-    /* It should only be called once for each builtin type. */
+    managed_static_type_state *state = isbuiltin
+        ? &(interp->types.builtins.initialized[index])
+        : &(interp->types.for_extensions.initialized[index]);
+
+    /* It should only be called once for each builtin type per interpreter. */
     assert(state->type == NULL);
     state->type = self;
+    state->isbuiltin = isbuiltin;
 
     /* state->tp_subclasses is left NULL until init_subclasses() sets it. */
     /* state->tp_weaklist is left NULL until insert_head() or insert_after()
        (in weakrefobject.c) sets it. */
 
-    interp->types.num_builtins_initialized++;
+    if (isbuiltin) {
+        interp->types.builtins.num_initialized++;
+    }
+    else {
+        interp->types.for_extensions.num_initialized++;
+    }
 }
 
 /* Reset the type's per-interpreter state.
-   This basically undoes what static_builtin_state_init() did. */
+   This basically undoes what managed_static_type_state_init() did. */
 static void
-static_builtin_state_clear(PyInterpreterState *interp, PyTypeObject *self)
+managed_static_type_state_clear(PyInterpreterState *interp, PyTypeObject *self,
+                                int isbuiltin, int final)
 {
-    static_builtin_state *state = static_builtin_state_get(interp, self);
+    size_t index = managed_static_type_index_get(self);
+    size_t full_index = isbuiltin
+        ? index
+        : index + _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES;
+
+    managed_static_type_state *state = isbuiltin
+        ? &(interp->types.builtins.initialized[index])
+        : &(interp->types.for_extensions.initialized[index]);
+    assert(state != NULL);
+
+    assert(_PyRuntime.types.managed_static.types[full_index].interp_count > 0);
+    assert(_PyRuntime.types.managed_static.types[full_index].type == state->type);
 
     assert(state->type != NULL);
     state->type = NULL;
     assert(state->tp_weaklist == NULL);  // It was already cleared out.
 
-    if (_Py_IsMainInterpreter(interp)) {
-        static_builtin_index_clear(self);
+    (void)_Py_atomic_add_int64(
+            &_PyRuntime.types.managed_static.types[full_index].interp_count, -1);
+    if (final) {
+        assert(!_PyRuntime.types.managed_static.types[full_index].interp_count);
+        _PyRuntime.types.managed_static.types[full_index].type = NULL;
+
+        managed_static_type_index_clear(self);
     }
 
-    assert(interp->types.num_builtins_initialized > 0);
-    interp->types.num_builtins_initialized--;
+    if (isbuiltin) {
+        assert(interp->types.builtins.num_initialized > 0);
+        interp->types.builtins.num_initialized--;
+    }
+    else {
+        PyMutex_Lock(&interp->types.mutex);
+        assert(interp->types.for_extensions.num_initialized > 0);
+        interp->types.for_extensions.num_initialized--;
+        if (interp->types.for_extensions.num_initialized == 0) {
+            interp->types.for_extensions.next_index = 0;
+        }
+        PyMutex_Unlock(&interp->types.mutex);
+    }
 }
 
-// Also see _PyStaticType_InitBuiltin() and _PyStaticType_Dealloc().
+// Also see _PyStaticType_InitBuiltin() and _PyStaticType_FiniBuiltin().
 
 /* end static builtin helpers */
 
@@ -227,7 +324,7 @@ start_readying(PyTypeObject *type)
 {
     if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = static_builtin_state_get(interp, type);
+        managed_static_type_state *state = managed_static_type_state_get(interp, type);
         assert(state != NULL);
         assert(!state->readying);
         state->readying = 1;
@@ -242,7 +339,7 @@ stop_readying(PyTypeObject *type)
 {
     if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = static_builtin_state_get(interp, type);
+        managed_static_type_state *state = managed_static_type_state_get(interp, type);
         assert(state != NULL);
         assert(state->readying);
         state->readying = 0;
@@ -257,7 +354,7 @@ is_readying(PyTypeObject *type)
 {
     if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = static_builtin_state_get(interp, type);
+        managed_static_type_state *state = managed_static_type_state_get(interp, type);
         assert(state != NULL);
         return state->readying;
     }
@@ -272,7 +369,7 @@ lookup_tp_dict(PyTypeObject *self)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         assert(state != NULL);
         return state->tp_dict;
     }
@@ -298,7 +395,7 @@ set_tp_dict(PyTypeObject *self, PyObject *dict)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         assert(state != NULL);
         state->tp_dict = dict;
         return;
@@ -311,7 +408,7 @@ clear_tp_dict(PyTypeObject *self)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         assert(state != NULL);
         Py_CLEAR(state->tp_dict);
         return;
@@ -334,19 +431,19 @@ _PyType_GetBases(PyTypeObject *self)
     BEGIN_TYPE_LOCK();
     res = lookup_tp_bases(self);
     Py_INCREF(res);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
 
     return res;
 }
 
 static inline void
-set_tp_bases(PyTypeObject *self, PyObject *bases)
+set_tp_bases(PyTypeObject *self, PyObject *bases, int initial)
 {
     assert(PyTuple_CheckExact(bases));
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         // XXX tp_bases can probably be statically allocated for each
         // static builtin type.
-        assert(_Py_IsMainInterpreter(_PyInterpreterState_GET()));
+        assert(initial);
         assert(self->tp_bases == NULL);
         if (PyTuple_GET_SIZE(bases) == 0) {
             assert(self->tp_base == NULL);
@@ -355,7 +452,7 @@ set_tp_bases(PyTypeObject *self, PyObject *bases)
             assert(PyTuple_GET_SIZE(bases) == 1);
             assert(PyTuple_GET_ITEM(bases, 0) == (PyObject *)self->tp_base);
             assert(self->tp_base->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
-            assert(_Py_IsImmortal(self->tp_base));
+            assert(_Py_IsImmortalLoose(self->tp_base));
         }
         _Py_SetImmortal(bases);
     }
@@ -363,16 +460,16 @@ set_tp_bases(PyTypeObject *self, PyObject *bases)
 }
 
 static inline void
-clear_tp_bases(PyTypeObject *self)
+clear_tp_bases(PyTypeObject *self, int final)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+        if (final) {
             if (self->tp_bases != NULL) {
                 if (PyTuple_GET_SIZE(self->tp_bases) == 0) {
                     Py_CLEAR(self->tp_bases);
                 }
                 else {
-                    assert(_Py_IsImmortal(self->tp_bases));
+                    assert(_Py_IsImmortalLoose(self->tp_bases));
                     _Py_ClearImmortal(self->tp_bases);
                 }
             }
@@ -405,7 +502,7 @@ _PyType_GetMRO(PyTypeObject *self)
     BEGIN_TYPE_LOCK();
     mro = lookup_tp_mro(self);
     Py_XINCREF(mro);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return mro;
 #else
     return Py_XNewRef(lookup_tp_mro(self));
@@ -413,13 +510,13 @@ _PyType_GetMRO(PyTypeObject *self)
 }
 
 static inline void
-set_tp_mro(PyTypeObject *self, PyObject *mro)
+set_tp_mro(PyTypeObject *self, PyObject *mro, int initial)
 {
     assert(PyTuple_CheckExact(mro));
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         // XXX tp_mro can probably be statically allocated for each
         // static builtin type.
-        assert(_Py_IsMainInterpreter(_PyInterpreterState_GET()));
+        assert(initial);
         assert(self->tp_mro == NULL);
         /* Other checks are done via set_tp_bases. */
         _Py_SetImmortal(mro);
@@ -428,16 +525,16 @@ set_tp_mro(PyTypeObject *self, PyObject *mro)
 }
 
 static inline void
-clear_tp_mro(PyTypeObject *self)
+clear_tp_mro(PyTypeObject *self, int final)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        if (_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+        if (final) {
             if (self->tp_mro != NULL) {
                 if (PyTuple_GET_SIZE(self->tp_mro) == 0) {
                     Py_CLEAR(self->tp_mro);
                 }
                 else {
-                    assert(_Py_IsImmortal(self->tp_mro));
+                    assert(_Py_IsImmortalLoose(self->tp_mro));
                     _Py_ClearImmortal(self->tp_mro);
                 }
             }
@@ -457,7 +554,7 @@ init_tp_subclasses(PyTypeObject *self)
     }
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         state->tp_subclasses = subclasses;
         return subclasses;
     }
@@ -473,7 +570,7 @@ clear_tp_subclasses(PyTypeObject *self)
        has no subclass. */
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         Py_CLEAR(state->tp_subclasses);
         return;
     }
@@ -485,7 +582,7 @@ lookup_tp_subclasses(PyTypeObject *self)
 {
     if (self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
         PyInterpreterState *interp = _PyInterpreterState_GET();
-        static_builtin_state *state = _PyStaticType_GetState(interp, self);
+        managed_static_type_state *state = _PyStaticType_GetState(interp, self);
         assert(state != NULL);
         return state->tp_subclasses;
     }
@@ -774,10 +871,14 @@ _PyTypes_Fini(PyInterpreterState *interp)
     struct type_cache *cache = &interp->types.type_cache;
     type_cache_clear(cache, NULL);
 
-    assert(interp->types.num_builtins_initialized == 0);
-    // All the static builtin types should have been finalized already.
-    for (size_t i = 0; i < _Py_MAX_STATIC_BUILTIN_TYPES; i++) {
-        assert(interp->types.builtins[i].type == NULL);
+    // All the managed static types should have been finalized already.
+    assert(interp->types.for_extensions.num_initialized == 0);
+    for (size_t i = 0; i < _Py_MAX_MANAGED_STATIC_EXT_TYPES; i++) {
+        assert(interp->types.for_extensions.initialized[i].type == NULL);
+    }
+    assert(interp->types.builtins.num_initialized == 0);
+    for (size_t i = 0; i < _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES; i++) {
+        assert(interp->types.builtins.initialized[i].type == NULL);
     }
 }
 
@@ -838,10 +939,10 @@ PyType_Watch(int watcher_id, PyObject* obj)
         return -1;
     }
     // ensure we will get a callback on the next modification
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     assign_version_tag(interp, type);
     type->tp_watched |= (1 << watcher_id);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return 0;
 }
 
@@ -861,43 +962,21 @@ PyType_Unwatch(int watcher_id, PyObject* obj)
     return 0;
 }
 
-#ifdef Py_GIL_DISABLED
-
 static void
-type_modification_starting_unlocked(PyTypeObject *type)
+set_version_unlocked(PyTypeObject *tp, unsigned int version)
 {
     ASSERT_TYPE_LOCK_HELD();
-
-    /* Clear version tags on all types, but leave the valid
-       version tag intact.  This prepares for a modification so that
-       any concurrent readers of the type cache will not see invalid
-       values.
-     */
-    if (!_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) {
-        return;
+#ifndef Py_GIL_DISABLED
+    if (version) {
+        tp->tp_versions_used++;
     }
-
-    PyObject *subclasses = lookup_tp_subclasses(type);
-    if (subclasses != NULL) {
-        assert(PyDict_CheckExact(subclasses));
-
-        Py_ssize_t i = 0;
-        PyObject *ref;
-        while (PyDict_Next(subclasses, &i, NULL, &ref)) {
-            PyTypeObject *subclass = type_from_ref(ref);
-            if (subclass == NULL) {
-                continue;
-            }
-            type_modification_starting_unlocked(subclass);
-            Py_DECREF(subclass);
-        }
+#else
+    if (version) {
+        _Py_atomic_add_uint16(&tp->tp_versions_used, 1);
     }
-
-    /* 0 is not a valid version tag */
-    _Py_atomic_store_uint32_release(&type->tp_version_tag, 0);
-}
-
 #endif
+    FT_ATOMIC_STORE_UINT32_RELAXED(tp->tp_version_tag, version);
+}
 
 static void
 type_modified_unlocked(PyTypeObject *type)
@@ -908,18 +987,26 @@ type_modified_unlocked(PyTypeObject *type)
 
        Invariants:
 
-       - before Py_TPFLAGS_VALID_VERSION_TAG can be set on a type,
+       - before tp_version_tag can be set on a type,
          it must first be set on all super types.
 
-       This function clears the Py_TPFLAGS_VALID_VERSION_TAG of a
+       This function clears the tp_version_tag of a
        type (so it must first clear it on all subclasses).  The
-       tp_version_tag value is meaningless unless this flag is set.
+       tp_version_tag value is meaningless when equal to zero.
        We don't assign new version tags eagerly, but only as
        needed.
      */
-    if (!_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) {
+#ifdef Py_GIL_DISABLED
+    if (_Py_atomic_load_uint_relaxed(&type->tp_version_tag) == 0) {
         return;
     }
+#else
+    if (type->tp_version_tag == 0) {
+        return;
+    }
+#endif
+    // Cannot modify static builtin types.
+    assert((type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) == 0);
 
     PyObject *subclasses = lookup_tp_subclasses(type);
     if (subclasses != NULL) {
@@ -957,8 +1044,7 @@ type_modified_unlocked(PyTypeObject *type)
         }
     }
 
-    type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;
-    FT_ATOMIC_STORE_UINT32_RELAXED(type->tp_version_tag, 0); /* 0 is not a valid version tag */
+    set_version_unlocked(type, 0); /* 0 is not a valid version tag */
     if (PyType_HasFeature(type, Py_TPFLAGS_HEAPTYPE)) {
         // This field *must* be invalidated if the type is modified (see the
         // comment on struct _specialization_cache):
@@ -970,13 +1056,13 @@ void
 PyType_Modified(PyTypeObject *type)
 {
     // Quick check without the lock held
-    if (!_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) {
+    if (type->tp_version_tag == 0) {
         return;
     }
 
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     type_modified_unlocked(type);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
 }
 
 static int
@@ -1034,8 +1120,7 @@ type_mro_modified(PyTypeObject *type, PyObject *bases) {
 
  clear:
     assert(!(type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN));
-    type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;
-    FT_ATOMIC_STORE_UINT32_RELAXED(type->tp_version_tag, 0); /* 0 is not a valid version tag */
+    set_version_unlocked(type, 0); /* 0 is not a valid version tag */
     if (PyType_HasFeature(type, Py_TPFLAGS_HEAPTYPE)) {
         // This field *must* be invalidated if the type is modified (see the
         // comment on struct _specialization_cache):
@@ -1050,12 +1135,11 @@ assign_version_tag(PyInterpreterState *interp, PyTypeObject *type)
 {
     ASSERT_TYPE_LOCK_HELD();
 
-    /* Ensure that the tp_version_tag is valid and set
-       Py_TPFLAGS_VALID_VERSION_TAG.  To respect the invariant, this
-       must first be done on all super classes.  Return 0 if this
-       cannot be done, 1 if Py_TPFLAGS_VALID_VERSION_TAG.
+    /* Ensure that the tp_version_tag is valid.
+     * To respect the invariant, this must first be done on all super classes.
+     * Return 0 if this cannot be done, 1 if tp_version_tag is set.
     */
-    if (_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG)) {
+    if (type->tp_version_tag != 0) {
         return 1;
     }
     if (!_PyType_HasFeature(type, Py_TPFLAGS_READY)) {
@@ -1064,15 +1148,22 @@ assign_version_tag(PyInterpreterState *interp, PyTypeObject *type)
     if (type->tp_versions_used >= MAX_VERSIONS_PER_CLASS) {
         return 0;
     }
-    type->tp_versions_used++;
+
+    PyObject *bases = lookup_tp_bases(type);
+    Py_ssize_t n = PyTuple_GET_SIZE(bases);
+    for (Py_ssize_t i = 0; i < n; i++) {
+        PyObject *b = PyTuple_GET_ITEM(bases, i);
+        if (!assign_version_tag(interp, _PyType_CAST(b))) {
+            return 0;
+        }
+    }
     if (type->tp_flags & Py_TPFLAGS_IMMUTABLETYPE) {
         /* static types */
         if (NEXT_GLOBAL_VERSION_TAG > _Py_MAX_GLOBAL_TYPE_VERSION_TAG) {
             /* We have run out of version numbers */
             return 0;
         }
-        FT_ATOMIC_STORE_UINT32_RELAXED(type->tp_version_tag,
-                                       NEXT_GLOBAL_VERSION_TAG++);
+        set_version_unlocked(type, NEXT_GLOBAL_VERSION_TAG++);
         assert (type->tp_version_tag <= _Py_MAX_GLOBAL_TYPE_VERSION_TAG);
     }
     else {
@@ -1081,19 +1172,9 @@ assign_version_tag(PyInterpreterState *interp, PyTypeObject *type)
             /* We have run out of version numbers */
             return 0;
         }
-        FT_ATOMIC_STORE_UINT32_RELAXED(type->tp_version_tag,
-                                       NEXT_VERSION_TAG(interp)++);
+        set_version_unlocked(type, NEXT_VERSION_TAG(interp)++);
         assert (type->tp_version_tag != 0);
     }
-
-    PyObject *bases = lookup_tp_bases(type);
-    Py_ssize_t n = PyTuple_GET_SIZE(bases);
-    for (Py_ssize_t i = 0; i < n; i++) {
-        PyObject *b = PyTuple_GET_ITEM(bases, i);
-        if (!assign_version_tag(interp, _PyType_CAST(b)))
-            return 0;
-    }
-    type->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG;
     return 1;
 }
 
@@ -1101,9 +1182,9 @@ int PyUnstable_Type_AssignVersionTag(PyTypeObject *type)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     int assigned;
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     assigned = assign_version_tag(interp, type);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return assigned;
 }
 
@@ -1249,8 +1330,10 @@ type_module(PyTypeObject *type)
         if (s != NULL) {
             mod = PyUnicode_FromStringAndSize(
                 type->tp_name, (Py_ssize_t)(s - type->tp_name));
-            if (mod != NULL)
-                PyUnicode_InternInPlace(&mod);
+            if (mod != NULL) {
+                PyInterpreterState *interp = _PyInterpreterState_GET();
+                _PyUnicode_InternMortal(interp, &mod);
+            }
         }
         else {
             mod = &_Py_ID(builtins);
@@ -1274,6 +1357,9 @@ type_set_module(PyTypeObject *type, PyObject *value, void *context)
     PyType_Modified(type);
 
     PyObject *dict = lookup_tp_dict(type);
+    if (PyDict_Pop(dict, &_Py_ID(__firstlineno__), NULL) < 0) {
+        return -1;
+    }
     return PyDict_SetItem(dict, &_Py_ID(__module__), value);
 }
 
@@ -1386,7 +1472,7 @@ type_get_mro(PyTypeObject *type, void *context)
 {
     PyObject *mro;
 
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     mro = lookup_tp_mro(type);
     if (mro == NULL) {
         mro = Py_None;
@@ -1394,7 +1480,7 @@ type_get_mro(PyTypeObject *type, void *context)
         Py_INCREF(mro);
     }
 
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return mro;
 }
 
@@ -1444,7 +1530,7 @@ mro_hierarchy(PyTypeObject *type, PyObject *temp)
     Py_XDECREF(tuple);
 
     if (res < 0) {
-        set_tp_mro(type, old_mro);
+        set_tp_mro(type, old_mro, 0);
         Py_DECREF(new_mro);
         return -1;
     }
@@ -1545,7 +1631,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context)
     assert(old_bases != NULL);
     PyTypeObject *old_base = type->tp_base;
 
-    set_tp_bases(type, Py_NewRef(new_bases));
+    set_tp_bases(type, Py_NewRef(new_bases), 0);
     type->tp_base = (PyTypeObject *)Py_NewRef(new_base);
 
     PyObject *temp = PyList_New(0);
@@ -1593,7 +1679,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context)
                           "", 2, 3, &cls, &new_mro, &old_mro);
         /* Do not rollback if cls has a newer version of MRO.  */
         if (lookup_tp_mro(cls) == new_mro) {
-            set_tp_mro(cls, Py_XNewRef(old_mro));
+            set_tp_mro(cls, Py_XNewRef(old_mro), 0);
             Py_DECREF(new_mro);
         }
     }
@@ -1603,7 +1689,7 @@ type_set_bases_unlocked(PyTypeObject *type, PyObject *new_bases, void *context)
     if (lookup_tp_bases(type) == new_bases) {
         assert(type->tp_base == new_base);
 
-        set_tp_bases(type, old_bases);
+        set_tp_bases(type, old_bases, 0);
         type->tp_base = old_base;
 
         Py_DECREF(new_bases);
@@ -1742,6 +1828,10 @@ type_set_annotations(PyTypeObject *type, PyObject *value, void *context)
 static PyObject *
 type_get_type_params(PyTypeObject *type, void *context)
 {
+    if (type == &PyType_Type) {
+        return PyTuple_New(0);
+    }
+
     PyObject *params;
     if (PyDict_GetItemRef(lookup_tp_dict(type), &_Py_ID(__type_params__), &params) == 0) {
         return PyTuple_New(0);
@@ -2253,7 +2343,7 @@ subtype_dealloc(PyObject *self)
            finalizers since they might rely on part of the object
            being finalized that has already been destroyed. */
         if (type->tp_weaklistoffset && !base->tp_weaklistoffset) {
-            _PyWeakref_ClearWeakRefsExceptCallbacks(self);
+            _PyWeakref_ClearWeakRefsNoCallbacks(self);
         }
     }
 
@@ -2565,7 +2655,7 @@ vectorcall_maybe(PyThreadState *tstate, PyObject *name,
  */
 
 static int
-tail_contains(PyObject *tuple, int whence, PyObject *o)
+tail_contains(PyObject *tuple, Py_ssize_t whence, PyObject *o)
 {
     Py_ssize_t j, size;
     size = PyTuple_GET_SIZE(tuple);
@@ -2628,7 +2718,7 @@ check_duplicates(PyObject *tuple)
 */
 
 static void
-set_mro_error(PyObject **to_merge, Py_ssize_t to_merge_size, int *remain)
+set_mro_error(PyObject **to_merge, Py_ssize_t to_merge_size, Py_ssize_t *remain)
 {
     Py_ssize_t i, n, off;
     char buf[1000];
@@ -2683,13 +2773,13 @@ pmerge(PyObject *acc, PyObject **to_merge, Py_ssize_t to_merge_size)
 {
     int res = 0;
     Py_ssize_t i, j, empty_cnt;
-    int *remain;
+    Py_ssize_t *remain;
 
     /* remain stores an index into each sublist of to_merge.
        remain[i] is the index of the next base in to_merge[i]
        that is not included in acc.
     */
-    remain = PyMem_New(int, to_merge_size);
+    remain = PyMem_New(Py_ssize_t, to_merge_size);
     if (remain == NULL) {
         PyErr_NoMemory();
         return -1;
@@ -2836,9 +2926,9 @@ static PyObject *
 mro_implementation(PyTypeObject *type)
 {
     PyObject *mro;
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     mro = mro_implementation_unlocked(type);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return mro;
 }
 
@@ -2973,7 +3063,7 @@ mro_invoke(PyTypeObject *type)
      - Returns -1 in case of an error.
 */
 static int
-mro_internal_unlocked(PyTypeObject *type, PyObject **p_old_mro)
+mro_internal_unlocked(PyTypeObject *type, int initial, PyObject **p_old_mro)
 {
     ASSERT_TYPE_LOCK_HELD();
 
@@ -2996,7 +3086,7 @@ mro_internal_unlocked(PyTypeObject *type, PyObject **p_old_mro)
         return 0;
     }
 
-    set_tp_mro(type, new_mro);
+    set_tp_mro(type, new_mro, initial);
 
     type_mro_modified(type, new_mro);
     /* corner case: the super class might have been hidden
@@ -3010,7 +3100,7 @@ mro_internal_unlocked(PyTypeObject *type, PyObject **p_old_mro)
     else {
         /* For static builtin types, this is only called during init
            before the method cache has been populated. */
-        assert(_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG));
+        assert(type->tp_version_tag);
     }
 
     if (p_old_mro != NULL)
@@ -3025,9 +3115,9 @@ static int
 mro_internal(PyTypeObject *type, PyObject **p_old_mro)
 {
     int res;
-    BEGIN_TYPE_LOCK()
-    res = mro_internal_unlocked(type, p_old_mro);
-    END_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
+    res = mro_internal_unlocked(type, 0, p_old_mro);
+    END_TYPE_LOCK();
     return res;
 }
 
@@ -3321,7 +3411,7 @@ type_init(PyObject *cls, PyObject *args, PyObject *kwds)
 unsigned long
 PyType_GetFlags(PyTypeObject *type)
 {
-    return type->tp_flags;
+    return FT_ATOMIC_LOAD_ULONG_RELAXED(type->tp_flags);
 }
 
 
@@ -3621,7 +3711,7 @@ type_new_alloc(type_new_ctx *ctx)
     type->tp_as_mapping = &et->as_mapping;
     type->tp_as_buffer = &et->as_buffer;
 
-    set_tp_bases(type, Py_NewRef(ctx->bases));
+    set_tp_bases(type, Py_NewRef(ctx->bases), 1);
     type->tp_base = (PyTypeObject *)Py_NewRef(ctx->base);
 
     type->tp_dealloc = subtype_dealloc;
@@ -4615,7 +4705,7 @@ _PyType_FromMetaclass_impl(
     /* Set slots we have prepared */
 
     type->tp_base = (PyTypeObject *)Py_NewRef(base);
-    set_tp_bases(type, bases);
+    set_tp_bases(type, bases, 1);
     bases = NULL;  // We give our reference to bases to the type
 
     type->tp_doc = tp_doc;
@@ -4892,7 +4982,7 @@ get_module_by_def(PyTypeObject *type, PyModuleDef *def)
     }
 
     PyObject *res = NULL;
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
 
     PyObject *mro = lookup_tp_mro(type);
     // The type must be ready
@@ -4919,7 +5009,7 @@ get_module_by_def(PyTypeObject *type, PyModuleDef *def)
             break;
         }
     }
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return res;
 }
 
@@ -4990,15 +5080,10 @@ find_name_in_mro(PyTypeObject *type, PyObject *name, int *error)
 {
     ASSERT_TYPE_LOCK_HELD();
 
-    Py_hash_t hash;
-    if (!PyUnicode_CheckExact(name) ||
-        (hash = _PyASCIIObject_CAST(name)->hash) == -1)
-    {
-        hash = PyObject_Hash(name);
-        if (hash == -1) {
-            *error = -1;
-            return NULL;
-        }
+    Py_hash_t hash = _PyObject_HashFast(name);
+    if (hash == -1) {
+        *error = -1;
+        return NULL;
     }
 
     /* Look in tp_dict of types in MRO */
@@ -5058,7 +5143,7 @@ is_dunder_name(PyObject *name)
     return 0;
 }
 
-static void
+static PyObject *
 update_cache(struct type_cache_entry *entry, PyObject *name, unsigned int version_tag, PyObject *value)
 {
     _Py_atomic_store_uint32_relaxed(&entry->version, version_tag);
@@ -5069,7 +5154,7 @@ update_cache(struct type_cache_entry *entry, PyObject *name, unsigned int versio
     // exact unicode object or Py_None so it's safe to do so.
     PyObject *old_name = entry->name;
     _Py_atomic_store_ptr_relaxed(&entry->name, Py_NewRef(name));
-    Py_DECREF(old_name);
+    return old_name;
 }
 
 #if Py_GIL_DISABLED
@@ -5089,10 +5174,12 @@ update_cache_gil_disabled(struct type_cache_entry *entry, PyObject *name,
         return;
     }
 
-    update_cache(entry, name, version_tag, value);
+    PyObject *old_value = update_cache(entry, name, version_tag, value);
 
     // Then update sequence to the next valid value
     _PySeqLock_UnlockWrite(&entry->sequence);
+
+    Py_DECREF(old_value);
 }
 
 #endif
@@ -5129,7 +5216,7 @@ _PyType_LookupRef(PyTypeObject *type, PyObject *name)
 #ifdef Py_GIL_DISABLED
     // synchronize-with other writing threads by doing an acquire load on the sequence
     while (1) {
-        int sequence = _PySeqLock_BeginRead(&entry->sequence);
+        uint32_t sequence = _PySeqLock_BeginRead(&entry->sequence);
         uint32_t entry_version = _Py_atomic_load_uint32_relaxed(&entry->version);
         uint32_t type_version = _Py_atomic_load_uint32_acquire(&type->tp_version_tag);
         if (entry_version == type_version &&
@@ -5157,7 +5244,7 @@ _PyType_LookupRef(PyTypeObject *type, PyObject *name)
 #else
     if (entry->version == type->tp_version_tag &&
         entry->name == name) {
-        assert(_PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG));
+        assert(type->tp_version_tag);
         OBJECT_STAT_INC_COND(type_cache_hits, !is_dunder_name(name));
         OBJECT_STAT_INC_COND(type_cache_dunder_hits, is_dunder_name(name));
         Py_XINCREF(entry->value);
@@ -5175,14 +5262,13 @@ _PyType_LookupRef(PyTypeObject *type, PyObject *name)
 
     int has_version = 0;
     int version = 0;
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     res = find_name_in_mro(type, name, &error);
     if (MCACHE_CACHEABLE_NAME(name)) {
         has_version = assign_version_tag(interp, type);
         version = type->tp_version_tag;
-        assert(!has_version || _PyType_HasFeature(type, Py_TPFLAGS_VALID_VERSION_TAG));
     }
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
 
     /* Only put NULL results into cache if there was no error. */
     if (error) {
@@ -5204,7 +5290,8 @@ _PyType_LookupRef(PyTypeObject *type, PyObject *name)
 #if Py_GIL_DISABLED
         update_cache_gil_disabled(entry, name, version, res);
 #else
-        update_cache(entry, name, version, res);
+        PyObject *old_value = update_cache(entry, name, version, res);
+        Py_DECREF(old_value);
 #endif
     }
     return res;
@@ -5384,6 +5471,42 @@ _Py_type_getattro(PyObject *type, PyObject *name)
     return _Py_type_getattro_impl((PyTypeObject *)type, name, NULL);
 }
 
+static int
+type_update_dict(PyTypeObject *type, PyDictObject *dict, PyObject *name,
+                 PyObject *value, PyObject **old_value)
+{
+    // We don't want any re-entrancy between when we update the dict
+    // and call type_modified_unlocked, including running the destructor
+    // of the current value as it can observe the cache in an inconsistent
+    // state.  Because we have an exact unicode and our dict has exact
+    // unicodes we know that this will all complete without releasing
+    // the locks.
+    if (_PyDict_GetItemRef_Unicode_LockHeld(dict, name, old_value) < 0) {
+        return -1;
+    }
+
+    /* Clear the VALID_VERSION flag of 'type' and all its
+        subclasses.  This could possibly be unified with the
+        update_subclasses() recursion in update_slot(), but carefully:
+        they each have their own conditions on which to stop
+        recursing into subclasses. */
+    type_modified_unlocked(type);
+
+    if (_PyDict_SetItem_LockHeld(dict, name, value) < 0) {
+        PyErr_Format(PyExc_AttributeError,
+                     "type object '%.50s' has no attribute '%U'",
+                     ((PyTypeObject*)type)->tp_name, name);
+        _PyObject_SetAttributeErrorContext((PyObject *)type, name);
+        return -1;
+    }
+
+    if (is_dunder_name(name)) {
+        return update_slot(type, name);
+    }
+
+    return 0;
+}
+
 static int
 type_setattro(PyObject *self, PyObject *name, PyObject *value)
 {
@@ -5411,9 +5534,9 @@ type_setattro(PyObject *self, PyObject *name, PyObject *value)
         if (name == NULL)
             return -1;
     }
-    /* bpo-40521: Interned strings are shared by all subinterpreters */
     if (!PyUnicode_CHECK_INTERNED(name)) {
-        PyUnicode_InternInPlace(&name);
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        _PyUnicode_InternMortal(interp, &name);
         if (!PyUnicode_CHECK_INTERNED(name)) {
             PyErr_SetString(PyExc_MemoryError,
                             "Out of memory interning an attribute name");
@@ -5426,12 +5549,11 @@ type_setattro(PyObject *self, PyObject *name, PyObject *value)
     assert(!_PyType_HasFeature(metatype, Py_TPFLAGS_INLINE_VALUES));
     assert(!_PyType_HasFeature(metatype, Py_TPFLAGS_MANAGED_DICT));
 
-    PyObject *old_value;
+    PyObject *old_value = NULL;
     PyObject *descr = _PyType_LookupRef(metatype, name);
     if (descr != NULL) {
         descrsetfunc f = Py_TYPE(descr)->tp_descr_set;
         if (f != NULL) {
-            old_value = NULL;
             res = f(descr, (PyObject *)type, value);
             goto done;
         }
@@ -5447,55 +5569,16 @@ type_setattro(PyObject *self, PyObject *name, PyObject *value)
         }
         END_TYPE_LOCK();
         if (dict == NULL) {
-            return -1;
+            res = -1;
+            goto done;
         }
     }
 
-    // We don't want any re-entrancy between when we update the dict
-    // and call type_modified_unlocked, including running the destructor
-    // of the current value as it can observe the cache in an inconsistent
-    // state.  Because we have an exact unicode and our dict has exact
-    // unicodes we know that this will all complete without releasing
-    // the locks.
     BEGIN_TYPE_DICT_LOCK(dict);
-
-    if (_PyDict_GetItemRef_Unicode_LockHeld((PyDictObject *)dict, name, &old_value) < 0) {
-        return -1;
-    }
-
-#ifdef Py_GIL_DISABLED
-    // In free-threaded builds readers can race with the lock-free portion
-    // of the type cache and the assignment into the dict.  We clear all of the
-    // versions initially so no readers will succeed in the lock-free case.
-    // They'll then block on the type lock until the update below is done.
-    type_modification_starting_unlocked(type);
-#endif
-
-    res = _PyDict_SetItem_LockHeld((PyDictObject *)dict, name, value);
-
-    /* Clear the VALID_VERSION flag of 'type' and all its
-        subclasses.  This could possibly be unified with the
-        update_subclasses() recursion in update_slot(), but carefully:
-        they each have their own conditions on which to stop
-        recursing into subclasses. */
-    type_modified_unlocked(type);
-
-    if (res == 0) {
-        if (is_dunder_name(name)) {
-            res = update_slot(type, name);
-        }
-    }
-    else if (PyErr_ExceptionMatches(PyExc_KeyError)) {
-        PyErr_Format(PyExc_AttributeError,
-                        "type object '%.50s' has no attribute '%U'",
-                        ((PyTypeObject*)type)->tp_name, name);
-
-        _PyObject_SetAttributeErrorContext((PyObject *)type, name);
-    }
-
+    res = type_update_dict(type, (PyDictObject *)dict, name, value, &old_value);
     assert(_PyType_CheckConsistency(type));
-
     END_TYPE_DICT_LOCK();
+
 done:
     Py_DECREF(name);
     Py_XDECREF(descr);
@@ -5517,7 +5600,7 @@ type_dealloc_common(PyTypeObject *type)
 
 
 static void
-clear_static_tp_subclasses(PyTypeObject *type)
+clear_static_tp_subclasses(PyTypeObject *type, int isbuiltin)
 {
     PyObject *subclasses = lookup_tp_subclasses(type);
     if (subclasses == NULL) {
@@ -5554,47 +5637,74 @@ clear_static_tp_subclasses(PyTypeObject *type)
             continue;
         }
         // All static builtin subtypes should have been finalized already.
-        assert(!(subclass->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN));
+        assert(!isbuiltin || !(subclass->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN));
         Py_DECREF(subclass);
     }
+#else
+    (void)isbuiltin;
 #endif
 
     clear_tp_subclasses(type);
 }
 
 static void
-clear_static_type_objects(PyInterpreterState *interp, PyTypeObject *type)
+clear_static_type_objects(PyInterpreterState *interp, PyTypeObject *type,
+                          int isbuiltin, int final)
 {
-    if (_Py_IsMainInterpreter(interp)) {
+    if (final) {
         Py_CLEAR(type->tp_cache);
     }
     clear_tp_dict(type);
-    clear_tp_bases(type);
-    clear_tp_mro(type);
-    clear_static_tp_subclasses(type);
+    clear_tp_bases(type, final);
+    clear_tp_mro(type, final);
+    clear_static_tp_subclasses(type, isbuiltin);
 }
 
-void
-_PyStaticType_Dealloc(PyInterpreterState *interp, PyTypeObject *type)
+
+static void
+fini_static_type(PyInterpreterState *interp, PyTypeObject *type,
+                 int isbuiltin, int final)
 {
     assert(type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
-    assert(_Py_IsImmortal((PyObject *)type));
+    assert(_Py_IsImmortalLoose((PyObject *)type));
 
     type_dealloc_common(type);
 
-    clear_static_type_objects(interp, type);
+    clear_static_type_objects(interp, type, isbuiltin, final);
 
-    if (_Py_IsMainInterpreter(interp)) {
+    if (final) {
         type->tp_flags &= ~Py_TPFLAGS_READY;
-        type->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;
         type->tp_version_tag = 0;
     }
 
     _PyStaticType_ClearWeakRefs(interp, type);
-    static_builtin_state_clear(interp, type);
+    managed_static_type_state_clear(interp, type, isbuiltin, final);
     /* We leave _Py_TPFLAGS_STATIC_BUILTIN set on tp_flags. */
 }
 
+void
+_PyTypes_FiniExtTypes(PyInterpreterState *interp)
+{
+    for (size_t i = _Py_MAX_MANAGED_STATIC_EXT_TYPES; i > 0; i--) {
+        if (interp->types.for_extensions.num_initialized == 0) {
+            break;
+        }
+        int64_t count = 0;
+        PyTypeObject *type = static_ext_type_lookup(interp, i-1, &count);
+        if (type == NULL) {
+            continue;
+        }
+        int final = (count == 1);
+        fini_static_type(interp, type, 0, final);
+    }
+}
+
+void
+_PyStaticType_FiniBuiltin(PyInterpreterState *interp, PyTypeObject *type)
+{
+    fini_static_type(interp, type, 1, _Py_IsMainInterpreter(interp));
+}
+
 
 static void
 type_dealloc(PyObject *self)
@@ -6036,15 +6146,19 @@ object_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
             return NULL;
         }
         comma_w_quotes_sep = PyUnicode_FromString("', '");
+        if (!comma_w_quotes_sep) {
+            Py_DECREF(sorted_methods);
+            return NULL;
+        }
         joined = PyUnicode_Join(comma_w_quotes_sep, sorted_methods);
-        method_count = PyObject_Length(sorted_methods);
-        Py_DECREF(sorted_methods);
+        Py_DECREF(comma_w_quotes_sep);
         if (joined == NULL)  {
-            Py_DECREF(comma_w_quotes_sep);
+            Py_DECREF(sorted_methods);
             return NULL;
         }
+        method_count = PyObject_Length(sorted_methods);
+        Py_DECREF(sorted_methods);
         if (method_count == -1) {
-            Py_DECREF(comma_w_quotes_sep);
             Py_DECREF(joined);
             return NULL;
         }
@@ -6056,7 +6170,6 @@ object_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
                      method_count > 1 ? "s" : "",
                      joined);
         Py_DECREF(joined);
-        Py_DECREF(comma_w_quotes_sep);
         return NULL;
     }
     PyObject *obj = type->tp_alloc(type, 0);
@@ -6267,29 +6380,13 @@ compatible_for_assignment(PyTypeObject* oldto, PyTypeObject* newto, const char*
     return 0;
 }
 
+
+
 static int
-object_set_class(PyObject *self, PyObject *value, void *closure)
+object_set_class_world_stopped(PyObject *self, PyTypeObject *newto)
 {
     PyTypeObject *oldto = Py_TYPE(self);
 
-    if (value == NULL) {
-        PyErr_SetString(PyExc_TypeError,
-                        "can't delete __class__ attribute");
-        return -1;
-    }
-    if (!PyType_Check(value)) {
-        PyErr_Format(PyExc_TypeError,
-          "__class__ must be set to a class, not '%s' object",
-          Py_TYPE(value)->tp_name);
-        return -1;
-    }
-    PyTypeObject *newto = (PyTypeObject *)value;
-
-    if (PySys_Audit("object.__setattr__", "OsO",
-                    self, "__class__", value) < 0) {
-        return -1;
-    }
-
     /* In versions of CPython prior to 3.5, the code in
        compatible_for_assignment was not set up to correctly check for memory
        layout / slot / etc. compatibility for non-HEAPTYPE classes, so we just
@@ -6353,38 +6450,27 @@ object_set_class(PyObject *self, PyObject *value, void *closure)
         /* Changing the class will change the implicit dict keys,
          * so we must materialize the dictionary first. */
         if (oldto->tp_flags & Py_TPFLAGS_INLINE_VALUES) {
-            PyDictObject *dict = _PyObject_MaterializeManagedDict(self);
+            PyDictObject *dict = _PyObject_GetManagedDict(self);
             if (dict == NULL) {
-                return -1;
+                dict = _PyObject_MaterializeManagedDict_LockHeld(self);
+                if (dict == NULL) {
+                    return -1;
+                }
             }
 
-            bool error = false;
-
-            Py_BEGIN_CRITICAL_SECTION2(self, dict);
-
-            // If we raced after materialization and replaced the dict
-            // then the materialized dict should no longer have the
-            // inline values in which case detach is a nop.
-            assert(_PyObject_GetManagedDict(self) == dict ||
-                   dict->ma_values != _PyObject_InlineValues(self));
+            assert(_PyObject_GetManagedDict(self) == dict);
 
             if (_PyDict_DetachFromObject(dict, self) < 0) {
-                error = true;
-            }
-
-            Py_END_CRITICAL_SECTION2();
-            if (error) {
                 return -1;
             }
+
         }
         if (newto->tp_flags & Py_TPFLAGS_HEAPTYPE) {
             Py_INCREF(newto);
         }
+
         Py_SET_TYPE(self, newto);
-        if (oldto->tp_flags & Py_TPFLAGS_HEAPTYPE)
-            Py_DECREF(oldto);
 
-        RARE_EVENT_INC(set_class);
         return 0;
     }
     else {
@@ -6392,6 +6478,48 @@ object_set_class(PyObject *self, PyObject *value, void *closure)
     }
 }
 
+static int
+object_set_class(PyObject *self, PyObject *value, void *closure)
+{
+
+    if (value == NULL) {
+        PyErr_SetString(PyExc_TypeError,
+                        "can't delete __class__ attribute");
+        return -1;
+    }
+    if (!PyType_Check(value)) {
+        PyErr_Format(PyExc_TypeError,
+          "__class__ must be set to a class, not '%s' object",
+          Py_TYPE(value)->tp_name);
+        return -1;
+    }
+    PyTypeObject *newto = (PyTypeObject *)value;
+
+    if (PySys_Audit("object.__setattr__", "OsO",
+                    self, "__class__", value) < 0) {
+        return -1;
+    }
+
+#ifdef Py_GIL_DISABLED
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyEval_StopTheWorld(interp);
+#endif
+    PyTypeObject *oldto = Py_TYPE(self);
+    int res = object_set_class_world_stopped(self, newto);
+#ifdef Py_GIL_DISABLED
+    _PyEval_StartTheWorld(interp);
+#endif
+    if (res == 0) {
+        if (oldto->tp_flags & Py_TPFLAGS_HEAPTYPE) {
+            Py_DECREF(oldto);
+        }
+
+        RARE_EVENT_INC(set_class);
+        return 0;
+    }
+    return res;
+}
+
 static PyGetSetDef object_getsets[] = {
     {"__class__", object_get_class, object_set_class,
      PyDoc_STR("the object's class")},
@@ -6928,18 +7056,7 @@ static PyObject *
 object___reduce_ex___impl(PyObject *self, int protocol)
 /*[clinic end generated code: output=2e157766f6b50094 input=f326b43fb8a4c5ff]*/
 {
-#define objreduce \
-    (_Py_INTERP_CACHED_OBJECT(_PyInterpreterState_GET(), objreduce))
-    PyObject *reduce, *res;
-
-    if (objreduce == NULL) {
-        PyObject *dict = lookup_tp_dict(&PyBaseObject_Type);
-        objreduce = PyDict_GetItemWithError(dict, &_Py_ID(__reduce__));
-        if (objreduce == NULL && PyErr_Occurred()) {
-            return NULL;
-        }
-    }
-
+    PyObject *reduce;
     if (PyObject_GetOptionalAttr(self, &_Py_ID(__reduce__), &reduce) < 0) {
         return NULL;
     }
@@ -6953,10 +7070,12 @@ object___reduce_ex___impl(PyObject *self, int protocol)
             Py_DECREF(reduce);
             return NULL;
         }
-        override = (clsreduce != objreduce);
+
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        override = (clsreduce != _Py_INTERP_CACHED_OBJECT(interp, objreduce));
         Py_DECREF(clsreduce);
         if (override) {
-            res = _PyObject_CallNoArgs(reduce);
+            PyObject *res = _PyObject_CallNoArgs(reduce);
             Py_DECREF(reduce);
             return res;
         }
@@ -6965,7 +7084,6 @@ object___reduce_ex___impl(PyObject *self, int protocol)
     }
 
     return _common_reduce(self, protocol);
-#undef objreduce
 }
 
 static PyObject *
@@ -7034,8 +7152,11 @@ object___sizeof___impl(PyObject *self)
 
     res = 0;
     isize = Py_TYPE(self)->tp_itemsize;
-    if (isize > 0)
-        res = Py_SIZE(self) * isize;
+    if (isize > 0) {
+        /* This assumes that ob_size is valid if tp_itemsize is not 0,
+         which isn't true for PyLongObject. */
+        res = _PyVarObject_CAST(self)->ob_size * isize;
+    }
     res += Py_TYPE(self)->tp_basicsize;
 
     return PyLong_FromSsize_t(res);
@@ -7217,6 +7338,12 @@ type_add_method(PyTypeObject *type, PyMethodDef *meth)
     return 0;
 }
 
+int
+_PyType_AddMethod(PyTypeObject *type, PyMethodDef *meth)
+{
+    return type_add_method(type, meth);
+}
+
 
 /* Add the methods from tp_methods to the __dict__ in a type object */
 static int
@@ -7642,10 +7769,10 @@ type_ready_set_type(PyTypeObject *type)
 }
 
 static int
-type_ready_set_bases(PyTypeObject *type)
+type_ready_set_bases(PyTypeObject *type, int initial)
 {
     if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+        if (!initial) {
             assert(lookup_tp_bases(type) != NULL);
             return 0;
         }
@@ -7664,7 +7791,7 @@ type_ready_set_bases(PyTypeObject *type)
         if (bases == NULL) {
             return -1;
         }
-        set_tp_bases(type, bases);
+        set_tp_bases(type, bases, 1);
     }
     return 0;
 }
@@ -7774,12 +7901,12 @@ type_ready_preheader(PyTypeObject *type)
 }
 
 static int
-type_ready_mro(PyTypeObject *type)
+type_ready_mro(PyTypeObject *type, int initial)
 {
     ASSERT_TYPE_LOCK_HELD();
 
     if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
-        if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
+        if (!initial) {
             assert(lookup_tp_mro(type) != NULL);
             return 0;
         }
@@ -7787,7 +7914,7 @@ type_ready_mro(PyTypeObject *type)
     }
 
     /* Calculate method resolution order */
-    if (mro_internal_unlocked(type, NULL) < 0) {
+    if (mro_internal_unlocked(type, initial, NULL) < 0) {
         return -1;
     }
     PyObject *mro = lookup_tp_mro(type);
@@ -7942,7 +8069,7 @@ type_ready_add_subclasses(PyTypeObject *type)
 // Set tp_new and the "__new__" key in the type dictionary.
 // Use the Py_TPFLAGS_DISALLOW_INSTANTIATION flag.
 static int
-type_ready_set_new(PyTypeObject *type, int rerunbuiltin)
+type_ready_set_new(PyTypeObject *type, int initial)
 {
     PyTypeObject *base = type->tp_base;
     /* The condition below could use some explanation.
@@ -7964,7 +8091,7 @@ type_ready_set_new(PyTypeObject *type, int rerunbuiltin)
 
     if (!(type->tp_flags & Py_TPFLAGS_DISALLOW_INSTANTIATION)) {
         if (type->tp_new != NULL) {
-            if (!rerunbuiltin || base == NULL || type->tp_new != base->tp_new) {
+            if (initial || base == NULL || type->tp_new != base->tp_new) {
                 // If "__new__" key does not exists in the type dictionary,
                 // set it to tp_new_wrapper().
                 if (add_tp_new_wrapper(type) < 0) {
@@ -8046,7 +8173,7 @@ type_ready_post_checks(PyTypeObject *type)
 
 
 static int
-type_ready(PyTypeObject *type, int rerunbuiltin)
+type_ready(PyTypeObject *type, int initial)
 {
     ASSERT_TYPE_LOCK_HELD();
 
@@ -8076,19 +8203,19 @@ type_ready(PyTypeObject *type, int rerunbuiltin)
     if (type_ready_set_type(type) < 0) {
         goto error;
     }
-    if (type_ready_set_bases(type) < 0) {
+    if (type_ready_set_bases(type, initial) < 0) {
         goto error;
     }
-    if (type_ready_mro(type) < 0) {
+    if (type_ready_mro(type, initial) < 0) {
         goto error;
     }
-    if (type_ready_set_new(type, rerunbuiltin) < 0) {
+    if (type_ready_set_new(type, initial) < 0) {
         goto error;
     }
     if (type_ready_fill_dict(type) < 0) {
         goto error;
     }
-    if (!rerunbuiltin) {
+    if (initial) {
         if (type_ready_inherit(type) < 0) {
             goto error;
         }
@@ -8102,7 +8229,7 @@ type_ready(PyTypeObject *type, int rerunbuiltin)
     if (type_ready_add_subclasses(type) < 0) {
         goto error;
     }
-    if (!rerunbuiltin) {
+    if (initial) {
         if (type_ready_managed_dict(type) < 0) {
             goto error;
         }
@@ -8140,55 +8267,67 @@ PyType_Ready(PyTypeObject *type)
     }
 
     int res;
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
     if (!(type->tp_flags & Py_TPFLAGS_READY)) {
-        res = type_ready(type, 0);
+        res = type_ready(type, 1);
     } else {
         res = 0;
         assert(_PyType_CheckConsistency(type));
     }
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return res;
 }
 
-int
-_PyStaticType_InitBuiltin(PyInterpreterState *interp, PyTypeObject *self)
+
+static int
+init_static_type(PyInterpreterState *interp, PyTypeObject *self,
+                 int isbuiltin, int initial)
 {
     assert(_Py_IsImmortal((PyObject *)self));
     assert(!(self->tp_flags & Py_TPFLAGS_HEAPTYPE));
     assert(!(self->tp_flags & Py_TPFLAGS_MANAGED_DICT));
     assert(!(self->tp_flags & Py_TPFLAGS_MANAGED_WEAKREF));
 
-    int ismain = _Py_IsMainInterpreter(interp);
     if ((self->tp_flags & Py_TPFLAGS_READY) == 0) {
-        assert(ismain);
+        assert(initial);
 
         self->tp_flags |= _Py_TPFLAGS_STATIC_BUILTIN;
         self->tp_flags |= Py_TPFLAGS_IMMUTABLETYPE;
 
         assert(NEXT_GLOBAL_VERSION_TAG <= _Py_MAX_GLOBAL_TYPE_VERSION_TAG);
         self->tp_version_tag = NEXT_GLOBAL_VERSION_TAG++;
-        self->tp_flags |= Py_TPFLAGS_VALID_VERSION_TAG;
     }
     else {
-        assert(!ismain);
+        assert(!initial);
         assert(self->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN);
-        assert(self->tp_flags & Py_TPFLAGS_VALID_VERSION_TAG);
+        assert(self->tp_version_tag != 0);
     }
 
-    static_builtin_state_init(interp, self);
+    managed_static_type_state_init(interp, self, isbuiltin, initial);
 
     int res;
     BEGIN_TYPE_LOCK();
-    res = type_ready(self, !ismain);
-    END_TYPE_LOCK()
+    res = type_ready(self, initial);
+    END_TYPE_LOCK();
     if (res < 0) {
         _PyStaticType_ClearWeakRefs(interp, self);
-        static_builtin_state_clear(interp, self);
+        managed_static_type_state_clear(interp, self, isbuiltin, initial);
     }
     return res;
 }
 
+int
+_PyStaticType_InitForExtension(PyInterpreterState *interp, PyTypeObject *self)
+{
+    return init_static_type(interp, self, 0, ((self->tp_flags & Py_TPFLAGS_READY) == 0));
+}
+
+int
+_PyStaticType_InitBuiltin(PyInterpreterState *interp, PyTypeObject *self)
+{
+    return init_static_type(interp, self, 1, _Py_IsMainInterpreter(interp));
+}
+
 
 static int
 add_subclass(PyTypeObject *base, PyTypeObject *type)
@@ -8641,7 +8780,7 @@ hackcheck(PyObject *self, setattrofunc func, const char *what)
     int res;
     BEGIN_TYPE_LOCK();
     res = hackcheck_unlocked(self, func, what);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
     return res;
 }
 
@@ -8819,13 +8958,13 @@ wrap_buffer(PyObject *self, PyObject *args, void *wrapped)
     if (flags == -1 && PyErr_Occurred()) {
         return NULL;
     }
-    if (flags > INT_MAX) {
+    if (flags > INT_MAX || flags < INT_MIN) {
         PyErr_SetString(PyExc_OverflowError,
-                        "buffer flags too large");
+                        "buffer flags out of range");
         return NULL;
     }
 
-    return _PyMemoryView_FromBufferProc(self, Py_SAFE_DOWNCAST(flags, Py_ssize_t, int),
+    return _PyMemoryView_FromBufferProc(self, (int)flags,
                                         (getbufferproc)wrapped);
 }
 
@@ -10570,14 +10709,14 @@ fixup_slot_dispatchers(PyTypeObject *type)
     // This lock isn't strictly necessary because the type has not been
     // exposed to anyone else yet, but update_ont_slot calls find_name_in_mro
     // where we'd like to assert that the type is locked.
-    BEGIN_TYPE_LOCK()
+    BEGIN_TYPE_LOCK();
 
     assert(!PyErr_Occurred());
     for (pytype_slotdef *p = slotdefs; p->name; ) {
         p = update_one_slot(type, p);
     }
 
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
 }
 
 static void
@@ -10730,6 +10869,84 @@ recurse_down_subclasses(PyTypeObject *type, PyObject *attr_name,
     return 0;
 }
 
+static int
+expect_manually_inherited(PyTypeObject *type, void **slot)
+{
+    PyObject *typeobj = (PyObject *)type;
+    if (slot == (void *)&type->tp_init) {
+        /* This is a best-effort list of builtin exception types
+           that have their own tp_init function. */
+        if (typeobj != PyExc_BaseException
+            && typeobj != PyExc_BaseExceptionGroup
+            && typeobj != PyExc_ImportError
+            && typeobj != PyExc_NameError
+            && typeobj != PyExc_OSError
+            && typeobj != PyExc_StopIteration
+            && typeobj != PyExc_SyntaxError
+            && typeobj != PyExc_UnicodeDecodeError
+            && typeobj != PyExc_UnicodeEncodeError
+
+            && type != &PyBool_Type
+            && type != &PyBytes_Type
+            && type != &PyMemoryView_Type
+            && type != &PyComplex_Type
+            && type != &PyEnum_Type
+            && type != &PyFilter_Type
+            && type != &PyFloat_Type
+            && type != &PyFrozenSet_Type
+            && type != &PyLong_Type
+            && type != &PyMap_Type
+            && type != &PyRange_Type
+            && type != &PyReversed_Type
+            && type != &PySlice_Type
+            && type != &PyTuple_Type
+            && type != &PyUnicode_Type
+            && type != &PyZip_Type)
+
+        {
+            return 1;
+        }
+    }
+    else if (slot == (void *)&type->tp_str) {
+        /* This is a best-effort list of builtin exception types
+           that have their own tp_str function. */
+        if (typeobj == PyExc_AttributeError || typeobj == PyExc_NameError) {
+            return 1;
+        }
+    }
+    else if (slot == (void *)&type->tp_getattr
+             || slot == (void *)&type->tp_getattro)
+    {
+        /* This is a best-effort list of builtin types
+           that have their own tp_getattr function. */
+        if (typeobj == PyExc_BaseException
+            || type == &PyByteArray_Type
+            || type == &PyBytes_Type
+            || type == &PyComplex_Type
+            || type == &PyDict_Type
+            || type == &PyEnum_Type
+            || type == &PyFilter_Type
+            || type == &PyLong_Type
+            || type == &PyList_Type
+            || type == &PyMap_Type
+            || type == &PyMemoryView_Type
+            || type == &PyProperty_Type
+            || type == &PyRange_Type
+            || type == &PyReversed_Type
+            || type == &PySet_Type
+            || type == &PySlice_Type
+            || type == &PySuper_Type
+            || type == &PyTuple_Type
+            || type == &PyZip_Type)
+        {
+            return 1;
+        }
+    }
+
+    /* It must be inherited (see type_ready_inherit()).. */
+    return 0;
+}
+
 /* This function is called by PyType_Ready() to populate the type's
    dictionary with method descriptors for function slots.  For each
    function slot (like tp_repr) that's defined in the type, one or more
@@ -10774,6 +10991,26 @@ add_operators(PyTypeObject *type)
         ptr = slotptr(type, p->offset);
         if (!ptr || !*ptr)
             continue;
+        if (type->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN
+            && type->tp_base != NULL)
+        {
+            /* Also ignore when the type slot has been inherited. */
+            void **ptr_base = slotptr(type->tp_base, p->offset);
+            if (ptr_base && *ptr == *ptr_base) {
+                /* Ideally we would always ignore any manually inherited
+                   slots, Which would mean inheriting the slot wrapper
+                   using normal attribute lookup rather than keeping
+                   a distinct copy.  However, that would introduce
+                   a slight change in behavior that could break
+                   existing code.
+
+                   In the meantime, look the other way when the definition
+                   explicitly inherits the slot. */
+                if (!expect_manually_inherited(type, ptr)) {
+                    continue;
+                }
+            }
+        }
         int r = PyDict_Contains(dict, p->name_strobj);
         if (r > 0)
             continue;
@@ -10866,7 +11103,7 @@ _super_lookup_descr(PyTypeObject *su_type, PyTypeObject *su_obj_type, PyObject *
        another thread can modify it after we end the critical section
        below  */
     Py_XINCREF(mro);
-    END_TYPE_LOCK()
+    END_TYPE_LOCK();
 
     if (mro == NULL)
         return NULL;
diff --git a/Objects/typevarobject.c b/Objects/typevarobject.c
index cc916045266aea..f3e3ed0c9afae7 100644
--- a/Objects/typevarobject.c
+++ b/Objects/typevarobject.c
@@ -73,7 +73,7 @@ NoDefault_reduce(PyObject *op, PyObject *Py_UNUSED(ignored))
     return PyUnicode_FromString("NoDefault");
 }
 
-static PyMethodDef notimplemented_methods[] = {
+static PyMethodDef nodefault_methods[] = {
     {"__reduce__", NoDefault_reduce, METH_NOARGS, NULL},
     {NULL, NULL}
 };
@@ -98,7 +98,7 @@ nodefault_dealloc(PyObject *nodefault)
     _Py_SetImmortal(nodefault);
 }
 
-PyDoc_STRVAR(notimplemented_doc,
+PyDoc_STRVAR(nodefault_doc,
 "NoDefaultType()\n"
 "--\n\n"
 "The type of the NoDefault singleton.");
@@ -109,8 +109,8 @@ PyTypeObject _PyNoDefault_Type = {
     .tp_dealloc = nodefault_dealloc,
     .tp_repr = NoDefault_repr,
     .tp_flags = Py_TPFLAGS_DEFAULT,
-    .tp_doc = notimplemented_doc,
-    .tp_methods = notimplemented_methods,
+    .tp_doc = nodefault_doc,
+    .tp_methods = nodefault_methods,
     .tp_new = nodefault_new,
 };
 
@@ -1640,7 +1640,16 @@ typealias_alloc(PyObject *name, PyObject *type_params, PyObject *compute_value,
         return NULL;
     }
     ta->name = Py_NewRef(name);
-    ta->type_params = Py_IsNone(type_params) ? NULL : Py_XNewRef(type_params);
+    if (
+        type_params == NULL
+        || Py_IsNone(type_params)
+        || (PyTuple_Check(type_params) && PyTuple_GET_SIZE(type_params) == 0)
+    ) {
+        ta->type_params = NULL;
+    }
+    else {
+        ta->type_params = Py_NewRef(type_params);
+    }
     ta->compute_value = Py_XNewRef(compute_value);
     ta->value = Py_XNewRef(value);
     ta->module = Py_XNewRef(module);
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 057b417074ebea..434cb5ffb61c0e 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -44,6 +44,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "pycore_bytesobject.h"   // _PyBytes_Repeat()
 #include "pycore_ceval.h"         // _PyEval_GetBuiltin()
 #include "pycore_codecs.h"        // _PyCodec_Lookup()
+#include "pycore_critical_section.h" // Py_*_CRITICAL_SECTION_SEQUENCE_FAST
 #include "pycore_format.h"        // F_LJUST
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_interp.h"        // PyInterpreterState.fs_codec
@@ -110,20 +111,42 @@ NOTE: In the interpreter's initialization phase, some globals are currently
 #  define _PyUnicode_CHECK(op) PyUnicode_Check(op)
 #endif
 
-#define _PyUnicode_UTF8(op)                             \
-    (_PyCompactUnicodeObject_CAST(op)->utf8)
-#define PyUnicode_UTF8(op)                              \
-    (assert(_PyUnicode_CHECK(op)),                      \
-     PyUnicode_IS_COMPACT_ASCII(op) ?                   \
-         ((char*)(_PyASCIIObject_CAST(op) + 1)) :       \
-         _PyUnicode_UTF8(op))
-#define _PyUnicode_UTF8_LENGTH(op)                      \
-    (_PyCompactUnicodeObject_CAST(op)->utf8_length)
-#define PyUnicode_UTF8_LENGTH(op)                       \
-    (assert(_PyUnicode_CHECK(op)),                      \
-     PyUnicode_IS_COMPACT_ASCII(op) ?                   \
-         _PyASCIIObject_CAST(op)->length :              \
-         _PyUnicode_UTF8_LENGTH(op))
+static inline char* _PyUnicode_UTF8(PyObject *op)
+{
+    return FT_ATOMIC_LOAD_PTR_ACQUIRE(_PyCompactUnicodeObject_CAST(op)->utf8);
+}
+
+static inline char* PyUnicode_UTF8(PyObject *op)
+{
+    assert(_PyUnicode_CHECK(op));
+    if (PyUnicode_IS_COMPACT_ASCII(op)) {
+        return ((char*)(_PyASCIIObject_CAST(op) + 1));
+    }
+    else {
+         return _PyUnicode_UTF8(op);
+    }
+}
+
+static inline void PyUnicode_SET_UTF8(PyObject *op, char *utf8)
+{
+    FT_ATOMIC_STORE_PTR_RELEASE(_PyCompactUnicodeObject_CAST(op)->utf8, utf8);
+}
+
+static inline Py_ssize_t PyUnicode_UTF8_LENGTH(PyObject *op)
+{
+    assert(_PyUnicode_CHECK(op));
+    if (PyUnicode_IS_COMPACT_ASCII(op)) {
+         return _PyASCIIObject_CAST(op)->length;
+    }
+    else {
+         return _PyCompactUnicodeObject_CAST(op)->utf8_length;
+    }
+}
+
+static inline void PyUnicode_SET_UTF8_LENGTH(PyObject *op, Py_ssize_t length)
+{
+    _PyCompactUnicodeObject_CAST(op)->utf8_length = length;
+}
 
 #define _PyUnicode_LENGTH(op)                           \
     (_PyASCIIObject_CAST(op)->length)
@@ -131,26 +154,37 @@ NOTE: In the interpreter's initialization phase, some globals are currently
     (_PyASCIIObject_CAST(op)->state)
 #define _PyUnicode_HASH(op)                             \
     (_PyASCIIObject_CAST(op)->hash)
-#define _PyUnicode_KIND(op)                             \
-    (assert(_PyUnicode_CHECK(op)),                      \
-     _PyASCIIObject_CAST(op)->state.kind)
-#define _PyUnicode_GET_LENGTH(op)                       \
-    (assert(_PyUnicode_CHECK(op)),                      \
-     _PyASCIIObject_CAST(op)->length)
+
+static inline Py_hash_t PyUnicode_HASH(PyObject *op)
+{
+    assert(_PyUnicode_CHECK(op));
+    return FT_ATOMIC_LOAD_SSIZE_RELAXED(_PyASCIIObject_CAST(op)->hash);
+}
+
+static inline void PyUnicode_SET_HASH(PyObject *op, Py_hash_t hash)
+{
+    FT_ATOMIC_STORE_SSIZE_RELAXED(_PyASCIIObject_CAST(op)->hash, hash);
+}
+
 #define _PyUnicode_DATA_ANY(op)                         \
     (_PyUnicodeObject_CAST(op)->data.any)
 
-#define _PyUnicode_SHARE_UTF8(op)                       \
-    (assert(_PyUnicode_CHECK(op)),                      \
-     assert(!PyUnicode_IS_COMPACT_ASCII(op)),           \
-     (_PyUnicode_UTF8(op) == PyUnicode_DATA(op)))
+static inline int _PyUnicode_SHARE_UTF8(PyObject *op)
+{
+    assert(_PyUnicode_CHECK(op));
+    assert(!PyUnicode_IS_COMPACT_ASCII(op));
+    return (_PyUnicode_UTF8(op) == PyUnicode_DATA(op));
+}
 
 /* true if the Unicode object has an allocated UTF-8 memory block
    (not shared with other data) */
-#define _PyUnicode_HAS_UTF8_MEMORY(op)                  \
-    ((!PyUnicode_IS_COMPACT_ASCII(op)                   \
-      && _PyUnicode_UTF8(op)                            \
-      && _PyUnicode_UTF8(op) != PyUnicode_DATA(op)))
+static inline int _PyUnicode_HAS_UTF8_MEMORY(PyObject *op)
+{
+    return (!PyUnicode_IS_COMPACT_ASCII(op)
+            && _PyUnicode_UTF8(op) != NULL
+            && _PyUnicode_UTF8(op) != PyUnicode_DATA(op));
+}
+
 
 /* Generic helper macro to convert characters of different types.
    from_type and to_type have to be valid type names, begin and end
@@ -176,10 +210,7 @@ NOTE: In the interpreter's initialization phase, some globals are currently
             *_to++ = (to_type) *_iter++;                \
     } while (0)
 
-#define LATIN1(ch)  \
-    (ch < 128 \
-     ? (PyObject*)&_Py_SINGLETON(strings).ascii[ch] \
-     : (PyObject*)&_Py_SINGLETON(strings).latin1[ch - 128])
+#define LATIN1 _Py_LATIN1_CHR
 
 #ifdef MS_WINDOWS
    /* On Windows, overallocate by 50% is the best factor */
@@ -214,18 +245,20 @@ static inline PyObject* unicode_get_empty(void)
     return &_Py_STR(empty);
 }
 
-/* This dictionary holds all interned unicode strings.  Note that references
-   to strings in this dictionary are *not* counted in the string's ob_refcnt.
-   When the interned string reaches a refcnt of 0 the string deallocation
-   function will delete the reference from this dictionary.
-*/
+/* This dictionary holds per-interpreter interned strings.
+ * See InternalDocs/string_interning.md for details.
+ */
 static inline PyObject *get_interned_dict(PyInterpreterState *interp)
 {
     return _Py_INTERP_CACHED_OBJECT(interp, interned_strings);
 }
 
+/* This hashtable holds statically allocated interned strings.
+ * See InternalDocs/string_interning.md for details.
+ */
 #define INTERNED_STRINGS _PyRuntime.cached_objects.interned_strings
 
+/* Get number of all interned strings for the current interpreter. */
 Py_ssize_t
 _PyUnicode_InternedSize(void)
 {
@@ -233,6 +266,28 @@ _PyUnicode_InternedSize(void)
     return _Py_hashtable_len(INTERNED_STRINGS) + PyDict_GET_SIZE(dict);
 }
 
+/* Get number of immortal interned strings for the current interpreter. */
+Py_ssize_t
+_PyUnicode_InternedSize_Immortal(void)
+{
+    PyObject *dict = get_interned_dict(_PyInterpreterState_GET());
+    PyObject *key, *value;
+    Py_ssize_t pos = 0;
+    Py_ssize_t count = 0;
+
+    // It's tempting to keep a count and avoid a loop here. But, this function
+    // is intended for refleak tests. It spends extra work to report the true
+    // value, to help detect bugs in optimizations.
+
+    while (PyDict_Next(dict, &pos, &key, &value)) {
+        assert(PyUnicode_CHECK_INTERNED(key) != SSTATE_INTERNED_IMMORTAL_STATIC);
+        if (PyUnicode_CHECK_INTERNED(key) == SSTATE_INTERNED_IMMORTAL) {
+           count++;
+       }
+    }
+    return _Py_hashtable_len(INTERNED_STRINGS) + count;
+}
+
 static Py_hash_t unicode_hash(PyObject *);
 static int unicode_compare_eq(PyObject *, PyObject *);
 
@@ -255,28 +310,38 @@ hashtable_unicode_compare(const void *key1, const void *key2)
     }
 }
 
+/* Return true if this interpreter should share the main interpreter's
+   intern_dict.  That's important for interpreters which load basic
+   single-phase init extension modules (m_size == -1).  There could be interned
+   immortal strings that are shared between interpreters, due to the
+   PyDict_Update(mdict, m_copy) call in import_find_extension().
+
+   It's not safe to deallocate those strings until all interpreters that
+   potentially use them are freed.  By storing them in the main interpreter, we
+   ensure they get freed after all other interpreters are freed.
+*/
+static bool
+has_shared_intern_dict(PyInterpreterState *interp)
+{
+    PyInterpreterState *main_interp = _PyInterpreterState_Main();
+    return interp != main_interp  && interp->feature_flags & Py_RTFLAGS_USE_MAIN_OBMALLOC;
+}
+
 static int
 init_interned_dict(PyInterpreterState *interp)
 {
-    if (_Py_IsMainInterpreter(interp)) {
-        assert(INTERNED_STRINGS == NULL);
-        _Py_hashtable_allocator_t hashtable_alloc = {PyMem_RawMalloc, PyMem_RawFree};
-        INTERNED_STRINGS = _Py_hashtable_new_full(
-            hashtable_unicode_hash,
-            hashtable_unicode_compare,
-            NULL,
-            NULL,
-            &hashtable_alloc
-        );
-        if (INTERNED_STRINGS == NULL) {
+    assert(get_interned_dict(interp) == NULL);
+    PyObject *interned;
+    if (has_shared_intern_dict(interp)) {
+        interned = get_interned_dict(_PyInterpreterState_Main());
+        Py_INCREF(interned);
+    }
+    else {
+        interned = PyDict_New();
+        if (interned == NULL) {
             return -1;
         }
     }
-    assert(get_interned_dict(interp) == NULL);
-    PyObject *interned = interned = PyDict_New();
-    if (interned == NULL) {
-        return -1;
-    }
     _Py_INTERP_CACHED_OBJECT(interp, interned_strings) = interned;
     return 0;
 }
@@ -286,11 +351,62 @@ clear_interned_dict(PyInterpreterState *interp)
 {
     PyObject *interned = get_interned_dict(interp);
     if (interned != NULL) {
-        PyDict_Clear(interned);
+        if (!has_shared_intern_dict(interp)) {
+            // only clear if the dict belongs to this interpreter
+            PyDict_Clear(interned);
+        }
         Py_DECREF(interned);
         _Py_INTERP_CACHED_OBJECT(interp, interned_strings) = NULL;
     }
-    if (_Py_IsMainInterpreter(interp) && INTERNED_STRINGS != NULL) {
+}
+
+static PyStatus
+init_global_interned_strings(PyInterpreterState *interp)
+{
+    assert(INTERNED_STRINGS == NULL);
+    _Py_hashtable_allocator_t hashtable_alloc = {PyMem_RawMalloc, PyMem_RawFree};
+
+    INTERNED_STRINGS = _Py_hashtable_new_full(
+        hashtable_unicode_hash,
+        hashtable_unicode_compare,
+        // Objects stored here are immortal and statically allocated,
+        // so we don't need key_destroy_func & value_destroy_func:
+        NULL,
+        NULL,
+        &hashtable_alloc
+    );
+    if (INTERNED_STRINGS == NULL) {
+        PyErr_Clear();
+        return _PyStatus_ERR("failed to create global interned dict");
+    }
+
+    /* Intern statically allocated string identifiers, deepfreeze strings,
+        * and one-byte latin-1 strings.
+        * This must be done before any module initialization so that statically
+        * allocated string identifiers are used instead of heap allocated strings.
+        * Deepfreeze uses the interned identifiers if present to save space
+        * else generates them and they are interned to speed up dict lookups.
+    */
+    _PyUnicode_InitStaticStrings(interp);
+
+    for (int i = 0; i < 256; i++) {
+        PyObject *s = LATIN1(i);
+        _PyUnicode_InternStatic(interp, &s);
+        assert(s == LATIN1(i));
+    }
+#ifdef Py_DEBUG
+    assert(_PyUnicode_CheckConsistency(&_Py_STR(empty), 1));
+
+    for (int i = 0; i < 256; i++) {
+        assert(_PyUnicode_CheckConsistency(LATIN1(i), 1));
+    }
+#endif
+    return _PyStatus_OK();
+}
+
+static void clear_global_interned_strings(void)
+{
+    if (INTERNED_STRINGS != NULL) {
         _Py_hashtable_destroy(INTERNED_STRINGS);
         INTERNED_STRINGS = NULL;
     }
@@ -567,7 +683,7 @@ _PyUnicode_CheckConsistency(PyObject *op, int check_content)
                                  || kind == PyUnicode_2BYTE_KIND
                                  || kind == PyUnicode_4BYTE_KIND);
             CHECK(ascii->state.ascii == 0);
-            CHECK(compact->utf8 != data);
+            CHECK(_PyUnicode_UTF8(op) != data);
         }
         else {
             PyUnicodeObject *unicode = _PyUnicodeObject_CAST(op);
@@ -579,16 +695,17 @@ _PyUnicode_CheckConsistency(PyObject *op, int check_content)
             CHECK(ascii->state.compact == 0);
             CHECK(data != NULL);
             if (ascii->state.ascii) {
-                CHECK(compact->utf8 == data);
+                CHECK(_PyUnicode_UTF8(op) == data);
                 CHECK(compact->utf8_length == ascii->length);
             }
             else {
-                CHECK(compact->utf8 != data);
+                CHECK(_PyUnicode_UTF8(op) != data);
             }
         }
-
-        if (compact->utf8 == NULL)
+#ifndef Py_GIL_DISABLED
+        if (_PyUnicode_UTF8(op) == NULL)
             CHECK(compact->utf8_length == 0);
+#endif
     }
 
     /* check that the best kind is used: O(n) operation */
@@ -623,6 +740,41 @@ _PyUnicode_CheckConsistency(PyObject *op, int check_content)
         }
         CHECK(PyUnicode_READ(kind, data, ascii->length) == 0);
     }
+
+    /* Check interning state */
+#ifdef Py_DEBUG
+    // Note that we do not check `_Py_IsImmortal(op)`, since stable ABI
+    // extensions can make immortal strings mortal (but with a high enough
+    // refcount).
+    // The other way is extremely unlikely (worth a potential failed assertion
+    // in a debug build), so we do check `!_Py_IsImmortal(op)`.
+    switch (PyUnicode_CHECK_INTERNED(op)) {
+        case SSTATE_NOT_INTERNED:
+            if (ascii->state.statically_allocated) {
+                // This state is for two exceptions:
+                // - strings are currently checked before they're interned
+                // - the 256 one-latin1-character strings
+                //   are static but use SSTATE_NOT_INTERNED
+            }
+            else {
+                CHECK(!_Py_IsImmortal(op));
+            }
+            break;
+        case SSTATE_INTERNED_MORTAL:
+            CHECK(!ascii->state.statically_allocated);
+            CHECK(!_Py_IsImmortal(op));
+            break;
+        case SSTATE_INTERNED_IMMORTAL:
+            CHECK(!ascii->state.statically_allocated);
+            break;
+        case SSTATE_INTERNED_IMMORTAL_STATIC:
+            CHECK(ascii->state.statically_allocated);
+            break;
+        default:
+            Py_UNREACHABLE();
+    }
+#endif
+
     return 1;
 
 #undef CHECK
@@ -997,12 +1149,13 @@ resize_compact(PyObject *unicode, Py_ssize_t length)
 
     if (_PyUnicode_HAS_UTF8_MEMORY(unicode)) {
         PyMem_Free(_PyUnicode_UTF8(unicode));
-        _PyUnicode_UTF8(unicode) = NULL;
-        _PyUnicode_UTF8_LENGTH(unicode) = 0;
+        PyUnicode_SET_UTF8_LENGTH(unicode, 0);
+        PyUnicode_SET_UTF8(unicode, NULL);
     }
 #ifdef Py_TRACE_REFS
     _Py_ForgetReference(unicode);
 #endif
+    _PyReftracerTrack(unicode, PyRefTracer_DESTROY);
 
     new_unicode = (PyObject *)PyObject_Realloc(unicode, new_size);
     if (new_unicode == NULL) {
@@ -1050,8 +1203,8 @@ resize_inplace(PyObject *unicode, Py_ssize_t length)
     if (!share_utf8 && _PyUnicode_HAS_UTF8_MEMORY(unicode))
     {
         PyMem_Free(_PyUnicode_UTF8(unicode));
-        _PyUnicode_UTF8(unicode) = NULL;
-        _PyUnicode_UTF8_LENGTH(unicode) = 0;
+        PyUnicode_SET_UTF8_LENGTH(unicode, 0);
+        PyUnicode_SET_UTF8(unicode, NULL);
     }
 
     data = (PyObject *)PyObject_Realloc(data, new_size);
@@ -1061,8 +1214,8 @@ resize_inplace(PyObject *unicode, Py_ssize_t length)
     }
     _PyUnicode_DATA_ANY(unicode) = data;
     if (share_utf8) {
-        _PyUnicode_UTF8(unicode) = data;
-        _PyUnicode_UTF8_LENGTH(unicode) = length;
+        PyUnicode_SET_UTF8_LENGTH(unicode, length);
+        PyUnicode_SET_UTF8(unicode, data);
     }
     _PyUnicode_LENGTH(unicode) = length;
     PyUnicode_WRITE(PyUnicode_KIND(unicode), data, length, 0);
@@ -1292,12 +1445,12 @@ unicode_convert_wchar_to_ucs4(const wchar_t *begin, const wchar_t *end,
 
     assert(unicode != NULL);
     assert(_PyUnicode_CHECK(unicode));
-    assert(_PyUnicode_KIND(unicode) == PyUnicode_4BYTE_KIND);
+    assert(PyUnicode_KIND(unicode) == PyUnicode_4BYTE_KIND);
     ucs4_out = PyUnicode_4BYTE_DATA(unicode);
 
     for (iter = begin; iter < end; ) {
         assert(ucs4_out < (PyUnicode_4BYTE_DATA(unicode) +
-                           _PyUnicode_GET_LENGTH(unicode)));
+                           PyUnicode_GET_LENGTH(unicode)));
         if (Py_UNICODE_IS_HIGH_SURROGATE(iter[0])
             && (iter+1) < end
             && Py_UNICODE_IS_LOW_SURROGATE(iter[1]))
@@ -1311,7 +1464,7 @@ unicode_convert_wchar_to_ucs4(const wchar_t *begin, const wchar_t *end,
         }
     }
     assert(ucs4_out == (PyUnicode_4BYTE_DATA(unicode) +
-                        _PyUnicode_GET_LENGTH(unicode)));
+                        PyUnicode_GET_LENGTH(unicode)));
 
 }
 #endif
@@ -1342,11 +1495,14 @@ _copy_characters(PyObject *to, Py_ssize_t to_start,
     assert(PyUnicode_Check(from));
     assert(from_start + how_many <= PyUnicode_GET_LENGTH(from));
 
-    assert(PyUnicode_Check(to));
-    assert(to_start + how_many <= PyUnicode_GET_LENGTH(to));
+    assert(to == NULL || PyUnicode_Check(to));
 
-    if (how_many == 0)
+    if (how_many == 0) {
         return 0;
+    }
+
+    assert(to != NULL);
+    assert(to_start + how_many <= PyUnicode_GET_LENGTH(to));
 
     from_kind = PyUnicode_KIND(from);
     from_data = PyUnicode_DATA(from);
@@ -1579,16 +1735,74 @@ unicode_dealloc(PyObject *unicode)
         _Py_FatalRefcountError("deallocating an Unicode singleton");
     }
 #endif
-    /* This should never get called, but we also don't want to SEGV if
-     * we accidentally decref an immortal string out of existence. Since
-     * the string is an immortal object, just re-set the reference count.
-     */
-    if (PyUnicode_CHECK_INTERNED(unicode)
-        || _PyUnicode_STATE(unicode).statically_allocated)
-    {
+    if (_PyUnicode_STATE(unicode).statically_allocated) {
+        /* This should never get called, but we also don't want to SEGV if
+        * we accidentally decref an immortal string out of existence. Since
+        * the string is an immortal object, just re-set the reference count.
+        */
+#ifdef Py_DEBUG
+        Py_UNREACHABLE();
+#endif
         _Py_SetImmortal(unicode);
         return;
     }
+    switch (_PyUnicode_STATE(unicode).interned) {
+        case SSTATE_NOT_INTERNED:
+            break;
+        case SSTATE_INTERNED_MORTAL:
+            /* Remove the object from the intern dict.
+             * Before doing so, we set the refcount to 2: the key and value
+             * in the interned_dict.
+             */
+            assert(Py_REFCNT(unicode) == 0);
+            Py_SET_REFCNT(unicode, 2);
+#ifdef Py_REF_DEBUG
+            /* let's be pedantic with the ref total */
+            _Py_IncRefTotal(_PyThreadState_GET());
+            _Py_IncRefTotal(_PyThreadState_GET());
+#endif
+            PyInterpreterState *interp = _PyInterpreterState_GET();
+            PyObject *interned = get_interned_dict(interp);
+            assert(interned != NULL);
+            PyObject *popped;
+            int r = PyDict_Pop(interned, unicode, &popped);
+            if (r == -1) {
+                PyErr_WriteUnraisable(unicode);
+                // We don't know what happened to the string. It's probably
+                // best to leak it:
+                // - if it was popped, there are no more references to it
+                //   so it can't cause trouble (except wasted memory)
+                // - if it wasn't popped, it'll remain interned
+                _Py_SetImmortal(unicode);
+                _PyUnicode_STATE(unicode).interned = SSTATE_INTERNED_IMMORTAL;
+                return;
+            }
+            if (r == 0) {
+                // The interned string was not found in the interned_dict.
+#ifdef Py_DEBUG
+                Py_UNREACHABLE();
+#endif
+                _Py_SetImmortal(unicode);
+                return;
+            }
+            // Successfully popped.
+            assert(popped == unicode);
+            // Only our `popped` reference should be left; remove it too.
+            assert(Py_REFCNT(unicode) == 1);
+            Py_SET_REFCNT(unicode, 0);
+#ifdef Py_REF_DEBUG
+            /* let's be pedantic with the ref total */
+            _Py_DecRefTotal(_PyThreadState_GET());
+#endif
+            break;
+        default:
+            // As with `statically_allocated` above.
+#ifdef Py_REF_DEBUG
+            Py_UNREACHABLE();
+#endif
+            _Py_SetImmortal(unicode);
+            return;
+    }
     if (_PyUnicode_HAS_UTF8_MEMORY(unicode)) {
         PyMem_Free(_PyUnicode_UTF8(unicode));
     }
@@ -1624,7 +1838,7 @@ unicode_modifiable(PyObject *unicode)
     assert(_PyUnicode_CHECK(unicode));
     if (Py_REFCNT(unicode) != 1)
         return 0;
-    if (_PyUnicode_HASH(unicode) != -1)
+    if (PyUnicode_HASH(unicode) != -1)
         return 0;
     if (PyUnicode_CHECK_INTERNED(unicode))
         return 0;
@@ -1751,7 +1965,6 @@ static PyObject*
 get_latin1_char(Py_UCS1 ch)
 {
     PyObject *o = LATIN1(ch);
-    assert(_Py_IsImmortal(o));
     return o;
 }
 
@@ -1933,7 +2146,7 @@ _PyUnicode_FromId(_Py_Identifier *id)
     if (!obj) {
         goto end;
     }
-    PyUnicode_InternInPlace(&obj);
+    _PyUnicode_InternImmortal(interp, &obj);
 
     if (index >= ids->size) {
         // Overallocate to reduce the number of realloc
@@ -3876,6 +4089,21 @@ PyUnicode_FSDecoder(PyObject* arg, void* addr)
 
 static int unicode_fill_utf8(PyObject *unicode);
 
+
+static int
+unicode_ensure_utf8(PyObject *unicode)
+{
+    int err = 0;
+    if (PyUnicode_UTF8(unicode) == NULL) {
+        Py_BEGIN_CRITICAL_SECTION(unicode);
+        if (PyUnicode_UTF8(unicode) == NULL) {
+            err = unicode_fill_utf8(unicode);
+        }
+        Py_END_CRITICAL_SECTION();
+    }
+    return err;
+}
+
 const char *
 PyUnicode_AsUTF8AndSize(PyObject *unicode, Py_ssize_t *psize)
 {
@@ -3887,13 +4115,11 @@ PyUnicode_AsUTF8AndSize(PyObject *unicode, Py_ssize_t *psize)
         return NULL;
     }
 
-    if (PyUnicode_UTF8(unicode) == NULL) {
-        if (unicode_fill_utf8(unicode) == -1) {
-            if (psize) {
-                *psize = -1;
-            }
-            return NULL;
+    if (unicode_ensure_utf8(unicode) == -1) {
+        if (psize) {
+            *psize = -1;
         }
+        return NULL;
     }
 
     if (psize) {
@@ -5225,6 +5451,7 @@ unicode_encode_utf8(PyObject *unicode, _Py_error_handler error_handler,
 static int
 unicode_fill_utf8(PyObject *unicode)
 {
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(unicode);
     /* the string cannot be ASCII, or PyUnicode_UTF8() would be set */
     assert(!PyUnicode_IS_ASCII(unicode));
 
@@ -5266,10 +5493,10 @@ unicode_fill_utf8(PyObject *unicode)
         PyErr_NoMemory();
         return -1;
     }
-    _PyUnicode_UTF8(unicode) = cache;
-    _PyUnicode_UTF8_LENGTH(unicode) = len;
     memcpy(cache, start, len);
     cache[len] = '\0';
+    PyUnicode_SET_UTF8_LENGTH(unicode, len);
+    PyUnicode_SET_UTF8(unicode, cache);
     _PyBytesWriter_Dealloc(&writer);
     return 0;
 }
@@ -9559,13 +9786,14 @@ PyUnicode_Join(PyObject *separator, PyObject *seq)
         return NULL;
     }
 
-    /* NOTE: the following code can't call back into Python code,
-     * so we are sure that fseq won't be mutated.
-     */
+    Py_BEGIN_CRITICAL_SECTION_SEQUENCE_FAST(seq);
 
     items = PySequence_Fast_ITEMS(fseq);
     seqlen = PySequence_Fast_GET_SIZE(fseq);
     res = _PyUnicode_JoinArray(separator, items, seqlen);
+
+    Py_END_CRITICAL_SECTION_SEQUENCE_FAST();
+
     Py_DECREF(fseq);
     return res;
 }
@@ -10814,12 +11042,15 @@ _PyUnicode_EqualToASCIIId(PyObject *left, _Py_Identifier *right)
     if (left == right_uni)
         return 1;
 
-    if (PyUnicode_CHECK_INTERNED(left))
+    assert(PyUnicode_CHECK_INTERNED(right_uni));
+    if (PyUnicode_CHECK_INTERNED(left)) {
         return 0;
+    }
 
-    assert(_PyUnicode_HASH(right_uni) != -1);
-    Py_hash_t hash = _PyUnicode_HASH(left);
-    if (hash != -1 && hash != _PyUnicode_HASH(right_uni)) {
+    Py_hash_t right_hash = PyUnicode_HASH(right_uni);
+    assert(right_hash != -1);
+    Py_hash_t hash = PyUnicode_HASH(left);
+    if (hash != -1 && hash != right_hash) {
         return 0;
     }
 
@@ -11304,12 +11535,14 @@ unicode_hash(PyObject *self)
 #ifdef Py_DEBUG
     assert(_Py_HashSecret_Initialized);
 #endif
-    if (_PyUnicode_HASH(self) != -1)
-        return _PyUnicode_HASH(self);
-
+    Py_hash_t hash = PyUnicode_HASH(self);
+    if (hash != -1) {
+        return hash;
+    }
     x = _Py_HashBytes(PyUnicode_DATA(self),
                       PyUnicode_GET_LENGTH(self) * PyUnicode_KIND(self));
-    _PyUnicode_HASH(self) = x;
+
+    PyUnicode_SET_HASH(self, x);
     return x;
 }
 
@@ -13409,7 +13642,7 @@ Return a formatted version of the string, using substitutions from args and kwar
 The substitutions are identified by braces ('{' and '}').");
 
 PyDoc_STRVAR(format_map__doc__,
-             "format_map($self, /, mapping)\n\
+             "format_map($self, mapping, /)\n\
 --\n\
 \n\
 Return a formatted version of the string, using substitutions from mapping.\n\
@@ -14663,7 +14896,16 @@ unicode_vectorcall(PyObject *type, PyObject *const *args,
         return PyObject_Str(object);
     }
     const char *encoding = arg_as_utf8(args[1], "encoding");
-    const char *errors = (nargs == 3) ? arg_as_utf8(args[2], "errors") : NULL;
+    if (encoding == NULL) {
+        return NULL;
+    }
+    const char *errors = NULL;
+    if (nargs == 3) {
+        errors = arg_as_utf8(args[2], "errors");
+        if (errors == NULL) {
+            return NULL;
+        }
+    }
     return PyUnicode_FromEncodedObject(object, encoding, errors);
 }
 
@@ -14697,8 +14939,8 @@ unicode_subtype_new(PyTypeObject *type, PyObject *unicode)
     _PyUnicode_STATE(self).compact = 0;
     _PyUnicode_STATE(self).ascii = _PyUnicode_STATE(unicode).ascii;
     _PyUnicode_STATE(self).statically_allocated = 0;
-    _PyUnicode_UTF8_LENGTH(self) = 0;
-    _PyUnicode_UTF8(self) = NULL;
+    PyUnicode_SET_UTF8_LENGTH(self, 0);
+    PyUnicode_SET_UTF8(self, NULL);
     _PyUnicode_DATA_ANY(self) = NULL;
 
     share_utf8 = 0;
@@ -14728,8 +14970,8 @@ unicode_subtype_new(PyTypeObject *type, PyObject *unicode)
 
     _PyUnicode_DATA_ANY(self) = data;
     if (share_utf8) {
-        _PyUnicode_UTF8_LENGTH(self) = length;
-        _PyUnicode_UTF8(self) = data;
+        PyUnicode_SET_UTF8_LENGTH(self, length);
+        PyUnicode_SET_UTF8(self, data);
     }
 
     memcpy(data, PyUnicode_DATA(unicode), kind * (length + 1));
@@ -14851,30 +15093,19 @@ _PyUnicode_InitState(PyInterpreterState *interp)
 PyStatus
 _PyUnicode_InitGlobalObjects(PyInterpreterState *interp)
 {
-    // Initialize the global interned dict
+    if (_Py_IsMainInterpreter(interp)) {
+        PyStatus status = init_global_interned_strings(interp);
+        if (_PyStatus_EXCEPTION(status)) {
+            return status;
+        }
+    }
+    assert(INTERNED_STRINGS);
+
     if (init_interned_dict(interp)) {
         PyErr_Clear();
         return _PyStatus_ERR("failed to create interned dict");
     }
 
-    if (_Py_IsMainInterpreter(interp)) {
-        /* Intern statically allocated string identifiers and deepfreeze strings.
-         * This must be done before any module initialization so that statically
-         * allocated string identifiers are used instead of heap allocated strings.
-         * Deepfreeze uses the interned identifiers if present to save space
-         * else generates them and they are interned to speed up dict lookups.
-        */
-        _PyUnicode_InitStaticStrings(interp);
-
-#ifdef Py_DEBUG
-        assert(_PyUnicode_CheckConsistency(&_Py_STR(empty), 1));
-
-        for (int i = 0; i < 256; i++) {
-            assert(_PyUnicode_CheckConsistency(LATIN1(i), 1));
-        }
-#endif
-    }
-
     return _PyStatus_OK();
 }
 
@@ -14897,106 +15128,250 @@ _PyUnicode_InitTypes(PyInterpreterState *interp)
     return _PyStatus_ERR("Can't initialize unicode types");
 }
 
+static /* non-null */ PyObject*
+intern_static(PyInterpreterState *interp, PyObject *s /* stolen */)
+{
+    // Note that this steals a reference to `s`, but in many cases that
+    // stolen ref is returned, requiring no decref/incref.
+
+    assert(s != NULL);
+    assert(_PyUnicode_CHECK(s));
+    assert(_PyUnicode_STATE(s).statically_allocated);
+    assert(!PyUnicode_CHECK_INTERNED(s));
+
+#ifdef Py_DEBUG
+    /* We must not add process-global interned string if there's already a
+     * per-interpreter interned_dict, which might contain duplicates.
+     */
+    PyObject *interned = get_interned_dict(interp);
+    assert(interned == NULL);
+#endif
+
+    /* Look in the global cache first. */
+    PyObject *r = (PyObject *)_Py_hashtable_get(INTERNED_STRINGS, s);
+    /* We should only init each string once */
+    assert(r == NULL);
+    /* but just in case (for the non-debug build), handle this */
+    if (r != NULL && r != s) {
+        assert(_PyUnicode_STATE(r).interned == SSTATE_INTERNED_IMMORTAL_STATIC);
+        assert(_PyUnicode_CHECK(r));
+        Py_DECREF(s);
+        return Py_NewRef(r);
+    }
+
+    if (_Py_hashtable_set(INTERNED_STRINGS, s, s) < -1) {
+        Py_FatalError("failed to intern static string");
+    }
+
+    _PyUnicode_STATE(s).interned = SSTATE_INTERNED_IMMORTAL_STATIC;
+    return s;
+}
 
 void
-_PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p)
+_PyUnicode_InternStatic(PyInterpreterState *interp, PyObject **p)
+{
+    // This should only be called as part of runtime initialization
+    assert(!Py_IsInitialized());
+
+    *p = intern_static(interp, *p);
+    assert(*p);
+}
+
+static void
+immortalize_interned(PyObject *s)
 {
-    PyObject *s = *p;
+    assert(PyUnicode_CHECK_INTERNED(s) == SSTATE_INTERNED_MORTAL);
+    assert(!_Py_IsImmortal(s));
+#ifdef Py_REF_DEBUG
+    /* The reference count value should be excluded from the RefTotal.
+       The decrements to these objects will not be registered so they
+       need to be accounted for in here. */
+    for (Py_ssize_t i = 0; i < Py_REFCNT(s); i++) {
+        _Py_DecRefTotal(_PyThreadState_GET());
+    }
+#endif
+    _PyUnicode_STATE(s).interned = SSTATE_INTERNED_IMMORTAL;
+    _Py_SetImmortal(s);
+}
+
+static /* non-null */ PyObject*
+intern_common(PyInterpreterState *interp, PyObject *s /* stolen */,
+              bool immortalize)
+{
+    // Note that this steals a reference to `s`, but in many cases that
+    // stolen ref is returned, requiring no decref/incref.
+
 #ifdef Py_DEBUG
     assert(s != NULL);
     assert(_PyUnicode_CHECK(s));
 #else
     if (s == NULL || !PyUnicode_Check(s)) {
-        return;
+        return s;
     }
 #endif
 
     /* If it's a subclass, we don't really know what putting
        it in the interned dict might do. */
     if (!PyUnicode_CheckExact(s)) {
-        return;
+        return s;
     }
 
-    if (PyUnicode_CHECK_INTERNED(s)) {
-        return;
+    /* Is it already interned? */
+    switch (PyUnicode_CHECK_INTERNED(s)) {
+        case SSTATE_NOT_INTERNED:
+            // no, go on
+            break;
+        case SSTATE_INTERNED_MORTAL:
+            // yes but we might need to make it immortal
+            if (immortalize) {
+                immortalize_interned(s);
+            }
+            return s;
+        default:
+            // all done
+            return s;
     }
 
-    /* Look in the global cache first. */
-    PyObject *r = (PyObject *)_Py_hashtable_get(INTERNED_STRINGS, s);
-    if (r != NULL && r != s) {
-        Py_SETREF(*p, Py_NewRef(r));
-        return;
+    /* Statically allocated strings must be already interned. */
+    assert(!_PyUnicode_STATE(s).statically_allocated);
+
+#if Py_GIL_DISABLED
+    /* In the free-threaded build, all interned strings are immortal */
+    immortalize = 1;
+#endif
+
+    /* If it's already immortal, intern it as such */
+    if (_Py_IsImmortal(s)) {
+        immortalize = 1;
     }
 
-    /* Handle statically allocated strings. */
-    if (_PyUnicode_STATE(s).statically_allocated) {
-        assert(_Py_IsImmortal(s));
-        if (_Py_hashtable_set(INTERNED_STRINGS, s, s) == 0) {
-            _PyUnicode_STATE(*p).interned = SSTATE_INTERNED_IMMORTAL_STATIC;
+    /* if it's a short string, get the singleton */
+    if (PyUnicode_GET_LENGTH(s) == 1 &&
+                PyUnicode_KIND(s) == PyUnicode_1BYTE_KIND) {
+        PyObject *r = LATIN1(*(unsigned char*)PyUnicode_DATA(s));
+        assert(PyUnicode_CHECK_INTERNED(r));
+        Py_DECREF(s);
+        return r;
+    }
+#ifdef Py_DEBUG
+    assert(!unicode_is_singleton(s));
+#endif
+
+    /* Look in the global cache now. */
+    {
+        PyObject *r = (PyObject *)_Py_hashtable_get(INTERNED_STRINGS, s);
+        if (r != NULL) {
+            assert(_PyUnicode_STATE(r).statically_allocated);
+            assert(r != s);  // r must be statically_allocated; s is not
+            Py_DECREF(s);
+            return Py_NewRef(r);
         }
-        return;
     }
 
-    /* Look in the per-interpreter cache. */
+    /* Do a setdefault on the per-interpreter cache. */
     PyObject *interned = get_interned_dict(interp);
     assert(interned != NULL);
 
     PyObject *t;
-    int res = PyDict_SetDefaultRef(interned, s, s, &t);
-    if (res < 0) {
-        PyErr_Clear();
-        return;
-    }
-    else if (res == 1) {
-        // value was already present (not inserted)
-        Py_SETREF(*p, t);
-        return;
+    {
+        int res = PyDict_SetDefaultRef(interned, s, s, &t);
+        if (res < 0) {
+            PyErr_Clear();
+            return s;
+        }
+        else if (res == 1) {
+            // value was already present (not inserted)
+            Py_DECREF(s);
+            if (immortalize &&
+                    PyUnicode_CHECK_INTERNED(t) == SSTATE_INTERNED_MORTAL) {
+                immortalize_interned(t);
+            }
+            return t;
+        }
+        else {
+            // value was newly inserted
+            assert (s == t);
+            Py_DECREF(t);
+        }
     }
-    Py_DECREF(t);
 
-    if (_Py_IsImmortal(s)) {
-        // XXX Restrict this to the main interpreter?
-        _PyUnicode_STATE(*p).interned = SSTATE_INTERNED_IMMORTAL_STATIC;
-        return;
-    }
+    /* NOT_INTERNED -> INTERNED_MORTAL */
+
+    assert(_PyUnicode_STATE(s).interned == SSTATE_NOT_INTERNED);
 
+    if (!_Py_IsImmortal(s)) {
+        /* The two references in interned dict (key and value) are not counted.
+        unicode_dealloc() and _PyUnicode_ClearInterned() take care of this. */
+        Py_SET_REFCNT(s, Py_REFCNT(s) - 2);
 #ifdef Py_REF_DEBUG
-    /* The reference count value excluding the 2 references from the
-       interned dictionary should be excluded from the RefTotal. The
-       decrements to these objects will not be registered so they
-       need to be accounted for in here. */
-    for (Py_ssize_t i = 0; i < Py_REFCNT(s) - 2; i++) {
+        /* let's be pedantic with the ref total */
+        _Py_DecRefTotal(_PyThreadState_GET());
         _Py_DecRefTotal(_PyThreadState_GET());
+#endif
+    }
+    _PyUnicode_STATE(s).interned = SSTATE_INTERNED_MORTAL;
+
+    /* INTERNED_MORTAL -> INTERNED_IMMORTAL (if needed) */
+
+#ifdef Py_DEBUG
+    if (_Py_IsImmortal(s)) {
+        assert(immortalize);
     }
 #endif
-    _Py_SetImmortal(s);
-    _PyUnicode_STATE(*p).interned = SSTATE_INTERNED_IMMORTAL;
+    if (immortalize) {
+        immortalize_interned(s);
+    }
+
+    return s;
+}
+
+void
+_PyUnicode_InternImmortal(PyInterpreterState *interp, PyObject **p)
+{
+    *p = intern_common(interp, *p, 1);
+    assert(*p);
+}
+
+void
+_PyUnicode_InternMortal(PyInterpreterState *interp, PyObject **p)
+{
+    *p = intern_common(interp, *p, 0);
+    assert(*p);
+}
+
+
+void
+_PyUnicode_InternInPlace(PyInterpreterState *interp, PyObject **p)
+{
+    _PyUnicode_InternImmortal(interp, p);
+    return;
 }
 
 void
 PyUnicode_InternInPlace(PyObject **p)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    _PyUnicode_InternInPlace(interp, p);
+    _PyUnicode_InternMortal(interp, p);
 }
 
-// Function kept for the stable ABI.
+// Public-looking name kept for the stable ABI; user should not call this:
 PyAPI_FUNC(void) PyUnicode_InternImmortal(PyObject **);
 void
 PyUnicode_InternImmortal(PyObject **p)
 {
-    PyUnicode_InternInPlace(p);
-    // Leak a reference on purpose
-    Py_INCREF(*p);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternImmortal(interp, p);
 }
 
 PyObject *
 PyUnicode_InternFromString(const char *cp)
 {
     PyObject *s = PyUnicode_FromString(cp);
-    if (s == NULL)
+    if (s == NULL) {
         return NULL;
-    PyUnicode_InternInPlace(&s);
+    }
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternMortal(interp, &s);
     return s;
 }
 
@@ -15010,20 +15385,13 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
     }
     assert(PyDict_CheckExact(interned));
 
-    /* TODO:
-     * Currently, the runtime is not able to guarantee that it can exit without
-     * allocations that carry over to a future initialization of Python within
-     * the same process. i.e:
-     *   ./python -X showrefcount -c 'import itertools'
-     *   [237 refs, 237 blocks]
-     *
-     * Therefore, this should remain disabled for until there is a strict guarantee
-     * that no memory will be left after `Py_Finalize`.
-     */
-#ifdef Py_DEBUG
-    /* For all non-singleton interned strings, restore the two valid references
-       to that instance from within the intern string dictionary and let the
-       normal reference counting process clean up these instances. */
+    if (has_shared_intern_dict(interp)) {
+        // the dict doesn't belong to this interpreter, skip the debug
+        // checks on it and just clear the pointer to it
+        clear_interned_dict(interp);
+        return;
+    }
+
 #ifdef INTERNED_STATS
     fprintf(stderr, "releasing %zd interned strings\n",
             PyDict_GET_SIZE(interned));
@@ -15037,13 +15405,32 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
         int shared = 0;
         switch (PyUnicode_CHECK_INTERNED(s)) {
         case SSTATE_INTERNED_IMMORTAL:
+            /* Make immortal interned strings mortal again.
+             *
+             * Currently, the runtime is not able to guarantee that it can exit
+             * without allocations that carry over to a future initialization
+             * of Python within the same process. i.e:
+             *   ./python -X showrefcount -c 'import itertools'
+             *   [237 refs, 237 blocks]
+             *
+             * This should remain disabled (`Py_DEBUG` only) until there is a
+             * strict guarantee that no memory will be left after
+             * `Py_Finalize`.
+             */
+#ifdef Py_DEBUG
             // Skip the Immortal Instance check and restore
             // the two references (key and value) ignored
             // by PyUnicode_InternInPlace().
             _Py_SetMortal(s, 2);
+#ifdef Py_REF_DEBUG
+            /* let's be pedantic with the ref total */
+            _Py_IncRefTotal(_PyThreadState_GET());
+            _Py_IncRefTotal(_PyThreadState_GET());
+#endif
 #ifdef INTERNED_STATS
             total_length += PyUnicode_GET_LENGTH(s);
 #endif
+#endif // Py_DEBUG
             break;
         case SSTATE_INTERNED_IMMORTAL_STATIC:
             /* It is shared between interpreters, so we should unmark it
@@ -15056,7 +15443,15 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
             }
             break;
         case SSTATE_INTERNED_MORTAL:
-            /* fall through */
+            // Restore 2 references held by the interned dict; these will
+            // be decref'd by clear_interned_dict's PyDict_Clear.
+            Py_SET_REFCNT(s, Py_REFCNT(s) + 2);
+#ifdef Py_REF_DEBUG
+            /* let's be pedantic with the ref total */
+            _Py_IncRefTotal(_PyThreadState_GET());
+            _Py_IncRefTotal(_PyThreadState_GET());
+#endif
+            break;
         case SSTATE_NOT_INTERNED:
             /* fall through */
         default:
@@ -15077,8 +15472,10 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
     for (Py_ssize_t i=0; i < ids->size; i++) {
         Py_XINCREF(ids->array[i]);
     }
-#endif /* Py_DEBUG */
     clear_interned_dict(interp);
+    if (_Py_IsMainInterpreter(interp)) {
+        clear_global_interned_strings();
+    }
 }
 
 
@@ -15288,7 +15685,7 @@ encode_wstr_utf8(wchar_t *wstr, char **str, const char *name)
     int res;
     res = _Py_EncodeUTF8Ex(wstr, str, NULL, NULL, 1, _Py_ERROR_STRICT);
     if (res == -2) {
-        PyErr_Format(PyExc_RuntimeWarning, "cannot decode %s", name);
+        PyErr_Format(PyExc_RuntimeError, "cannot encode %s", name);
         return -1;
     }
     if (res < 0) {
@@ -15505,9 +15902,9 @@ unicode_is_finalizing(void)
 void
 _PyUnicode_FiniTypes(PyInterpreterState *interp)
 {
-    _PyStaticType_Dealloc(interp, &EncodingMapType);
-    _PyStaticType_Dealloc(interp, &PyFieldNameIter_Type);
-    _PyStaticType_Dealloc(interp, &PyFormatterIter_Type);
+    _PyStaticType_FiniBuiltin(interp, &EncodingMapType);
+    _PyStaticType_FiniBuiltin(interp, &PyFieldNameIter_Type);
+    _PyStaticType_FiniBuiltin(interp, &PyFormatterIter_Type);
 }
 
 
@@ -15516,8 +15913,10 @@ _PyUnicode_Fini(PyInterpreterState *interp)
 {
     struct _Py_unicode_state *state = &interp->unicode;
 
-    // _PyUnicode_ClearInterned() must be called before _PyUnicode_Fini()
-    assert(get_interned_dict(interp) == NULL);
+    if (!has_shared_intern_dict(interp)) {
+        // _PyUnicode_ClearInterned() must be called before _PyUnicode_Fini()
+        assert(get_interned_dict(interp) == NULL);
+    }
 
     _PyUnicode_FiniEncodings(&state->fs_codec);
 
diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c
index 88afaec86827ed..61f05514a48023 100644
--- a/Objects/weakrefobject.c
+++ b/Objects/weakrefobject.c
@@ -426,6 +426,10 @@ get_or_create_weakref(PyTypeObject *type, PyObject *obj, PyObject *callback)
             return basic_ref;
         }
         PyWeakReference *newref = allocate_weakref(type, obj, callback);
+        if (newref == NULL) {
+            UNLOCK_WEAKREFS(obj);
+            return NULL;
+        }
         insert_weakref(newref, list);
         UNLOCK_WEAKREFS(obj);
         return newref;
@@ -433,6 +437,9 @@ get_or_create_weakref(PyTypeObject *type, PyObject *obj, PyObject *callback)
     else {
         // We may not be able to safely allocate inside the lock
         PyWeakReference *newref = allocate_weakref(type, obj, callback);
+        if (newref == NULL) {
+            return NULL;
+        }
         LOCK_WEAKREFS(obj);
         insert_weakref(newref, list);
         UNLOCK_WEAKREFS(obj);
@@ -1016,7 +1023,7 @@ PyObject_ClearWeakRefs(PyObject *object)
     PyObject *exc = PyErr_GetRaisedException();
     PyObject *tuple = PyTuple_New(num_weakrefs * 2);
     if (tuple == NULL) {
-        _PyWeakref_ClearWeakRefsExceptCallbacks(object);
+        _PyWeakref_ClearWeakRefsNoCallbacks(object);
         PyErr_WriteUnraisable(NULL);
         PyErr_SetRaisedException(exc);
         return;
@@ -1057,6 +1064,14 @@ PyObject_ClearWeakRefs(PyObject *object)
     PyErr_SetRaisedException(exc);
 }
 
+void
+PyUnstable_Object_ClearWeakRefsNoCallbacks(PyObject *obj)
+{
+    if (_PyType_SUPPORTS_WEAKREFS(Py_TYPE(obj))) {
+        _PyWeakref_ClearWeakRefsNoCallbacks(obj);
+    }
+}
+
 /* This function is called by _PyStaticType_Dealloc() to clear weak references.
  *
  * This is called at the end of runtime finalization, so we can just
@@ -1066,7 +1081,7 @@ PyObject_ClearWeakRefs(PyObject *object)
 void
 _PyStaticType_ClearWeakRefs(PyInterpreterState *interp, PyTypeObject *type)
 {
-    static_builtin_state *state = _PyStaticType_GetState(interp, type);
+    managed_static_type_state *state = _PyStaticType_GetState(interp, type);
     PyObject **list = _PyStaticType_GET_WEAKREFS_LISTPTR(state);
     // This is safe to do without holding the lock in free-threaded builds;
     // there is only one thread running and no new threads can be created.
@@ -1076,7 +1091,7 @@ _PyStaticType_ClearWeakRefs(PyInterpreterState *interp, PyTypeObject *type)
 }
 
 void
-_PyWeakref_ClearWeakRefsExceptCallbacks(PyObject *obj)
+_PyWeakref_ClearWeakRefsNoCallbacks(PyObject *obj)
 {
     /* Modeled after GET_WEAKREFS_LISTPTR().
 
diff --git a/PC/_wmimodule.cpp b/PC/_wmimodule.cpp
index 48863b90f4cc27..3a59e78f171526 100644
--- a/PC/_wmimodule.cpp
+++ b/PC/_wmimodule.cpp
@@ -55,12 +55,26 @@ _query_thread(LPVOID param)
     IWbemLocator *locator = NULL;
     IWbemServices *services = NULL;
     IEnumWbemClassObject* enumerator = NULL;
+    HRESULT hr = S_OK;
     BSTR bstrQuery = NULL;
     struct _query_data *data = (struct _query_data*)param;
 
-    HRESULT hr = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+    // gh-125315: Copy the query string first, so that if the main thread gives
+    // up on waiting we aren't left with a dangling pointer (and a likely crash)
+    bstrQuery = SysAllocString(data->query);
+    if (!bstrQuery) {
+        hr = HRESULT_FROM_WIN32(ERROR_NOT_ENOUGH_MEMORY);
+    }
+
+    if (SUCCEEDED(hr)) {
+        hr = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+    }
+
     if (FAILED(hr)) {
         CloseHandle(data->writePipe);
+        if (bstrQuery) {
+            SysFreeString(bstrQuery);
+        }
         return (DWORD)hr;
     }
 
@@ -101,12 +115,6 @@ _query_thread(LPVOID param)
             NULL, EOAC_NONE
         );
     }
-    if (SUCCEEDED(hr)) {
-        bstrQuery = SysAllocString(data->query);
-        if (!bstrQuery) {
-            hr = HRESULT_FROM_WIN32(ERROR_NOT_ENOUGH_MEMORY);
-        }
-    }
     if (SUCCEEDED(hr)) {
         hr = services->ExecQuery(
             bstr_t("WQL"),
diff --git a/PC/launcher2.c b/PC/launcher2.c
index 139aa61bbe5cc2..befcbe30600f2c 100644
--- a/PC/launcher2.c
+++ b/PC/launcher2.c
@@ -853,7 +853,7 @@ searchPath(SearchInfo *search, const wchar_t *shebang, int shebangLength)
     }
 
     wchar_t filename[MAXLEN];
-    if (wcsncpy_s(filename, MAXLEN, command, lastDot)) {
+    if (wcsncpy_s(filename, MAXLEN, command, commandLength)) {
         return RC_BAD_VIRTUAL_PATH;
     }
 
@@ -1962,6 +1962,7 @@ struct AppxSearchInfo {
 
 struct AppxSearchInfo APPX_SEARCH[] = {
     // Releases made through the Store
+    { L"PythonSoftwareFoundation.Python.3.14_qbz5n2kfra8p0", L"3.14", 10 },
     { L"PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0", L"3.13", 10 },
     { L"PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0", L"3.12", 10 },
     { L"PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0", L"3.11", 10 },
@@ -1970,8 +1971,9 @@ struct AppxSearchInfo APPX_SEARCH[] = {
     { L"PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0", L"3.8", 10 },
 
     // Side-loadable releases. Note that the publisher ID changes whenever we
-    // renew our code-signing certificate, so the newer ID has a higher
-    // priority (lower sortKey)
+    // change our code signing certificate subject, so the newer IDs have higher
+    // priorities (lower sortKey)
+    { L"PythonSoftwareFoundation.Python.3.14_3847v3x7pw1km", L"3.14", 11 },
     { L"PythonSoftwareFoundation.Python.3.13_3847v3x7pw1km", L"3.13", 11 },
     { L"PythonSoftwareFoundation.Python.3.12_3847v3x7pw1km", L"3.12", 11 },
     { L"PythonSoftwareFoundation.Python.3.11_3847v3x7pw1km", L"3.11", 11 },
@@ -2054,7 +2056,8 @@ struct StoreSearchInfo {
 
 
 struct StoreSearchInfo STORE_SEARCH[] = {
-    { L"3", /* 3.12 */ L"9NCVDN91XZQP" },
+    { L"3", /* 3.13 */ L"9PNRBTZXMB4Z" },
+    { L"3.14", L"9NTRHQCBBPR8" },
     { L"3.13", L"9PNRBTZXMB4Z" },
     { L"3.12", L"9NCVDN91XZQP" },
     { L"3.11", L"9NRWMJP3717K" },
@@ -2707,6 +2710,11 @@ process(int argc, wchar_t ** argv)
     DWORD len = GetEnvironmentVariableW(L"PYLAUNCHER_LIMIT_TO_COMPANY", NULL, 0);
     if (len > 1) {
         wchar_t *limitToCompany = allocSearchInfoBuffer(&search, len);
+        if (!limitToCompany) {
+            exitCode = RC_NO_MEMORY;
+            winerror(0, L"Failed to allocate internal buffer");
+            goto abort;
+        }
         search.limitToCompany = limitToCompany;
         if (0 == GetEnvironmentVariableW(L"PYLAUNCHER_LIMIT_TO_COMPANY", limitToCompany, len)) {
             exitCode = RC_INTERNAL_ERROR;
diff --git a/PC/layout/main.py b/PC/layout/main.py
index d176b272f1c19d..8bd435456c635a 100644
--- a/PC/layout/main.py
+++ b/PC/layout/main.py
@@ -31,11 +31,13 @@
 from .support.nuspec import *
 
 TEST_PYDS_ONLY = FileStemSet("xxlimited", "xxlimited_35", "_ctypes_test", "_test*")
+TEST_DLLS_ONLY = set()
 TEST_DIRS_ONLY = FileNameSet("test", "tests")
 
 IDLE_DIRS_ONLY = FileNameSet("idlelib")
 
-TCLTK_PYDS_ONLY = FileStemSet("tcl*", "tk*", "_tkinter", "zlib1")
+TCLTK_PYDS_ONLY = FileStemSet("_tkinter")
+TCLTK_DLLS_ONLY = FileStemSet("tcl*", "tk*", "zlib1")
 TCLTK_DIRS_ONLY = FileNameSet("tkinter", "turtledemo")
 TCLTK_FILES_ONLY = FileNameSet("turtle.py")
 
@@ -121,7 +123,7 @@ def get_tcltk_lib(ns):
 
 
 def get_layout(ns):
-    def in_build(f, dest="", new_name=None):
+    def in_build(f, dest="", new_name=None, no_lib=False):
         n, _, x = f.rpartition(".")
         n = new_name or n
         src = ns.build / f
@@ -136,7 +138,7 @@ def in_build(f, dest="", new_name=None):
             pdb = src.with_suffix(".pdb")
             if pdb.is_file():
                 yield dest + n + ".pdb", pdb
-        if ns.include_dev:
+        if ns.include_dev and not no_lib:
             lib = src.with_suffix(".lib")
             if lib.is_file():
                 yield "libs/" + n + ".lib", lib
@@ -202,7 +204,9 @@ def in_build(f, dest="", new_name=None):
 
     yield "LICENSE.txt", ns.build / "LICENSE.txt"
 
-    for dest, src in rglob(ns.build, "*.pyd"):
+    dest = "" if ns.flat_dlls else "DLLs/"
+
+    for _, src in rglob(ns.build, "*.pyd"):
         if ns.include_freethreaded:
             if not src.match("*.cp*t-win*.pyd"):
                 continue
@@ -217,14 +221,18 @@ def in_build(f, dest="", new_name=None):
             continue
         if src in TCLTK_PYDS_ONLY and not ns.include_tcltk:
             continue
-        yield from in_build(src.name, dest="" if ns.flat_dlls else "DLLs/")
+        yield from in_build(src.name, dest=dest, no_lib=True)
 
-    for dest, src in rglob(ns.build, "*.dll"):
+    for _, src in rglob(ns.build, "*.dll"):
         if src.stem.endswith("_d") != bool(ns.debug) and src not in REQUIRED_DLLS:
             continue
         if src in EXCLUDE_FROM_DLLS:
             continue
-        yield from in_build(src.name, dest="" if ns.flat_dlls else "DLLs/")
+        if src in TEST_DLLS_ONLY and not ns.include_tests:
+            continue
+        if src in TCLTK_DLLS_ONLY and not ns.include_tcltk:
+            continue
+        yield from in_build(src.name, dest=dest, no_lib=True)
 
     if ns.zip_lib:
         zip_name = PYTHON_ZIP_NAME
@@ -599,6 +607,15 @@ def main():
     ns.source = ns.source or (Path(__file__).resolve().parent.parent.parent)
     ns.build = ns.build or Path(sys.executable).parent
     ns.doc_build = ns.doc_build or (ns.source / "Doc" / "build")
+    if ns.copy and not ns.copy.is_absolute():
+        ns.copy = (Path.cwd() / ns.copy).resolve()
+    if not ns.temp:
+        # Put temp on a Dev Drive for speed if we're copying to one.
+        # If not, the regular temp dir will have to do.
+        if ns.copy and getattr(os.path, "isdevdrive", lambda d: False)(ns.copy):
+            ns.temp = ns.copy.with_name(ns.copy.name + "_temp")
+        else:
+            ns.temp = Path(tempfile.mkdtemp())
     if not ns.source.is_absolute():
         ns.source = (Path.cwd() / ns.source).resolve()
     if not ns.build.is_absolute():
@@ -617,21 +634,11 @@ def main():
         else:
             ns.arch = "amd64"
 
-    if ns.copy and not ns.copy.is_absolute():
-        ns.copy = (Path.cwd() / ns.copy).resolve()
     if ns.zip and not ns.zip.is_absolute():
         ns.zip = (Path.cwd() / ns.zip).resolve()
     if ns.catalog and not ns.catalog.is_absolute():
         ns.catalog = (Path.cwd() / ns.catalog).resolve()
 
-    if not ns.temp:
-        # Put temp on a Dev Drive for speed if we're copying to one.
-        # If not, the regular temp dir will have to do.
-        if ns.copy and getattr(os.path, "isdevdrive", lambda d: False)(ns.copy):
-            ns.temp = ns.copy.with_name(ns.copy.name + "_temp")
-        else:
-            ns.temp = Path(tempfile.mkdtemp())
-
     configure_logger(ns)
 
     log_info(
diff --git a/PC/pyconfig.h.in b/PC/pyconfig.h.in
index d72d6282c2806f..424421f6ff1647 100644
--- a/PC/pyconfig.h.in
+++ b/PC/pyconfig.h.in
@@ -169,9 +169,9 @@ WIN32 is still required for the locale module.
 #endif /* MS_WIN64 */
 
 /* set the version macros for the windows headers */
-/* Python 3.9+ requires Windows 8 or greater */
-#define Py_WINVER 0x0602 /* _WIN32_WINNT_WIN8 */
-#define Py_NTDDI NTDDI_WIN8
+/* Python 3.12+ requires Windows 8.1 or greater */
+#define Py_WINVER 0x0603 /* _WIN32_WINNT_WINBLUE (8.1) */
+#define Py_NTDDI NTDDI_WINBLUE
 
 /* We only set these values when building Python - we don't want to force
    these values on extensions, as that will affect the prototypes and
diff --git a/PC/python3dll.c b/PC/python3dll.c
index 86c888430891c9..eb077df70a57d6 100755
--- a/PC/python3dll.c
+++ b/PC/python3dll.c
@@ -839,7 +839,6 @@ EXPORT_DATA(PyExc_FutureWarning)
 EXPORT_DATA(PyExc_GeneratorExit)
 EXPORT_DATA(PyExc_ImportError)
 EXPORT_DATA(PyExc_ImportWarning)
-EXPORT_DATA(PyExc_IncompleteInputError)
 EXPORT_DATA(PyExc_IndentationError)
 EXPORT_DATA(PyExc_IndexError)
 EXPORT_DATA(PyExc_InterruptedError)
diff --git a/PC/venvlauncher.c b/PC/venvlauncher.c
index b1c8d0763d8c76..b6bb0218236ae9 100644
--- a/PC/venvlauncher.c
+++ b/PC/venvlauncher.c
@@ -223,7 +223,7 @@ find_home_value(const char *buffer, DWORD maxlen, const char **start, DWORD *len
         return 0;
     }
     for (const char *s = strstr(buffer, "home");
-         s && ((ptrdiff_t)s - (ptrdiff_t)buffer) < maxlen;
+         s && (size_t)((ptrdiff_t)s - (ptrdiff_t)buffer) < maxlen;
          s = strstr(s + 1, "\nhome")
     ) {
         if (*s == '\n') {
diff --git a/PCbuild/_testlimitedcapi.vcxproj b/PCbuild/_testlimitedcapi.vcxproj
index 252039d93103bd..a5e0be93ab9390 100644
--- a/PCbuild/_testlimitedcapi.vcxproj
+++ b/PCbuild/_testlimitedcapi.vcxproj
@@ -99,16 +99,20 @@
     <ClCompile Include="..\Modules\_testlimitedcapi\bytes.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\complex.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\dict.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\eval.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\float.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\heaptype_relative.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\import.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\list.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\long.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\object.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\pyos.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\set.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\sys.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\tuple.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\unicode.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\vectorcall_limited.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\file.c" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\python_nt.rc" />
diff --git a/PCbuild/_testlimitedcapi.vcxproj.filters b/PCbuild/_testlimitedcapi.vcxproj.filters
index 7efbb0acf8f960..4b3521afc06158 100644
--- a/PCbuild/_testlimitedcapi.vcxproj.filters
+++ b/PCbuild/_testlimitedcapi.vcxproj.filters
@@ -14,8 +14,10 @@
     <ClCompile Include="..\Modules\_testlimitedcapi\bytes.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\complex.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\dict.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\eval.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\float.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\heaptype_relative.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\import.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\list.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\long.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\object.c" />
@@ -23,8 +25,10 @@
     <ClCompile Include="..\Modules\_testlimitedcapi\set.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\sys.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\testcapi_long.h" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\tuple.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\unicode.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi\vectorcall_limited.c" />
+    <ClCompile Include="..\Modules\_testlimitedcapi\file.c" />
     <ClCompile Include="..\Modules\_testlimitedcapi.c" />
   </ItemGroup>
   <ItemGroup>
diff --git a/PCbuild/find_python.bat b/PCbuild/find_python.bat
index af85f6d362466e..d65d080ca71a90 100644
--- a/PCbuild/find_python.bat
+++ b/PCbuild/find_python.bat
@@ -39,15 +39,15 @@
 @if "%_Py_EXTERNALS_DIR%"=="" (set _Py_EXTERNALS_DIR=%_Py_D%\..\externals)
 
 @rem If we have Python in externals, use that one
-@if exist "%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" ("%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" -Ec "import sys; assert sys.version_info[:2] >= (3, 8)" >nul 2>nul) && (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") && (set _Py_Python_Source=found in externals directory) && goto :found || rmdir /Q /S "%_Py_EXTERNALS_DIR%\pythonx86"
+@if exist "%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" ("%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" -Ec "import sys; assert sys.version_info[:2] >= (3, 10)" >nul 2>nul) && (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") && (set _Py_Python_Source=found in externals directory) && goto :found || rmdir /Q /S "%_Py_EXTERNALS_DIR%\pythonx86"
 
 @rem If HOST_PYTHON is recent enough, use that
-@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 9)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
+@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 10)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
 
 @rem If py.exe finds a recent enough version, use that one
 @rem It is fine to add new versions to this list when they have released,
 @rem but we do not use prerelease builds here.
-@for %%p in (3.12 3.11 3.10 3.9) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
+@for %%p in (3.13 3.12 3.11 3.10) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
 
 @if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
 @set _Py_NUGET=%NUGET%
diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index 761d3de93b777d..779880258c13c3 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -53,11 +53,11 @@ echo.Fetching external libraries...
 set libraries=
 set libraries=%libraries%                                       bzip2-1.0.8
 if NOT "%IncludeLibffiSrc%"=="false" set libraries=%libraries%  libffi-3.4.4
-if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-3.0.13
+if NOT "%IncludeSSLSrc%"=="false" set libraries=%libraries%     openssl-3.0.15
 set libraries=%libraries%                                       mpdecimal-4.0.0
 set libraries=%libraries%                                       sqlite-3.45.3.0
-if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tcl-core-8.6.13.1
-if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tk-8.6.13.1
+if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tcl-core-8.6.15.0
+if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tk-8.6.15.0
 set libraries=%libraries%                                       xz-5.2.5
 set libraries=%libraries%                                       zlib-1.3.1
 
@@ -77,8 +77,8 @@ echo.Fetching external binaries...
 
 set binaries=
 if NOT "%IncludeLibffi%"=="false"  set binaries=%binaries% libffi-3.4.4
-if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-3.0.13
-if NOT "%IncludeTkinter%"=="false" set binaries=%binaries% tcltk-8.6.13.1
+if NOT "%IncludeSSL%"=="false"     set binaries=%binaries% openssl-bin-3.0.15
+if NOT "%IncludeTkinter%"=="false" set binaries=%binaries% tcltk-8.6.15.0
 if NOT "%IncludeSSLSrc%"=="false"  set binaries=%binaries% nasm-2.11.06
 
 for %%b in (%binaries%) do (
diff --git a/PCbuild/python.props b/PCbuild/python.props
index 86fe8531d7df55..c8ecdb4515ae9a 100644
--- a/PCbuild/python.props
+++ b/PCbuild/python.props
@@ -75,8 +75,8 @@
     <libffiOutDir Condition="$(libffiOutDir) == ''">$(libffiDir)$(ArchName)\</libffiOutDir>
     <libffiIncludeDir Condition="$(libffiIncludeDir) == ''">$(libffiOutDir)include</libffiIncludeDir>
     <mpdecimalDir Condition="$(mpdecimalDir) == ''">$(ExternalsDir)\mpdecimal-4.0.0\</mpdecimalDir>
-    <opensslDir Condition="$(opensslDir) == ''">$(ExternalsDir)openssl-3.0.13\</opensslDir>
-    <opensslOutDir Condition="$(opensslOutDir) == ''">$(ExternalsDir)openssl-bin-3.0.13\$(ArchName)\</opensslOutDir>
+    <opensslDir Condition="$(opensslDir) == ''">$(ExternalsDir)openssl-3.0.15\</opensslDir>
+    <opensslOutDir Condition="$(opensslOutDir) == ''">$(ExternalsDir)openssl-bin-3.0.15\$(ArchName)\</opensslOutDir>
     <opensslIncludeDir Condition="$(opensslIncludeDir) == ''">$(opensslOutDir)include</opensslIncludeDir>
     <nasmDir Condition="$(nasmDir) == ''">$(ExternalsDir)\nasm-2.11.06\</nasmDir>
     <zlibDir Condition="$(zlibDir) == ''">$(ExternalsDir)\zlib-1.3.1\</zlibDir>
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index 16fb424b11c6a8..70212903c83781 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -135,6 +135,7 @@
     <ClInclude Include="..\Include\codecs.h" />
     <ClInclude Include="..\Include\compile.h" />
     <ClInclude Include="..\Include\complexobject.h" />
+    <ClInclude Include="..\Include\critical_section.h" />
     <ClInclude Include="..\Include\cpython\abstract.h" />
     <ClInclude Include="..\Include\cpython\bytearrayobject.h" />
     <ClInclude Include="..\Include\cpython\bytesobject.h" />
@@ -145,6 +146,7 @@
     <ClInclude Include="..\Include\cpython\compile.h" />
     <ClInclude Include="..\Include\cpython\complexobject.h" />
     <ClInclude Include="..\Include\cpython\context.h" />
+    <ClInclude Include="..\Include\cpython\critical_section.h" />
     <ClInclude Include="..\Include\cpython\descrobject.h" />
     <ClInclude Include="..\Include\cpython\dictobject.h" />
     <ClInclude Include="..\Include\cpython\fileobject.h" />
@@ -156,14 +158,15 @@
     <ClInclude Include="..\Include\cpython\import.h" />
     <ClInclude Include="..\Include\cpython\initconfig.h" />
     <ClInclude Include="..\Include\cpython\listobject.h" />
+    <ClInclude Include="..\Include\cpython\lock.h" />
     <ClInclude Include="..\Include\cpython\longintrepr.h" />
     <ClInclude Include="..\Include\cpython\longobject.h" />
     <ClInclude Include="..\Include\cpython\memoryobject.h" />
     <ClInclude Include="..\Include\cpython\methodobject.h" />
+    <ClInclude Include="..\Include\cpython\modsupport.h" />
     <ClInclude Include="..\Include\cpython\object.h" />
     <ClInclude Include="..\Include\cpython\objimpl.h" />
     <ClInclude Include="..\Include\cpython\odictobject.h" />
-    <ClInclude Include="..\Include\cpython\optimizer.h" />
     <ClInclude Include="..\Include\cpython\parser_interface.h" />
     <ClInclude Include="..\Include\cpython\picklebufobject.h" />
     <ClInclude Include="..\Include\cpython\pyarena.h" />
@@ -310,6 +313,7 @@
     <ClInclude Include="..\Include\intrcheck.h" />
     <ClInclude Include="..\Include\iterobject.h" />
     <ClInclude Include="..\Include\listobject.h" />
+    <ClInclude Include="..\Include\lock.h" />
     <ClInclude Include="..\Include\longobject.h" />
     <ClInclude Include="..\Include\marshal.h" />
     <ClInclude Include="..\Include\memoryobject.h" />
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index cf9bc0f4bc1c70..3eed5a9465bca4 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -72,6 +72,9 @@
     <ClInclude Include="..\Include\complexobject.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\critical_section.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\datetime.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -114,6 +117,9 @@
     <ClInclude Include="..\Include\listobject.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\lock.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\longobject.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -372,6 +378,9 @@
     <ClInclude Include="..\Include\cpython\context.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\critical_section.h">
+      <Filter>Include\cpython</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\descrobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -393,6 +402,9 @@
     <ClInclude Include="..\Include\cpython\listobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\lock.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\longintrepr.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -405,9 +417,6 @@
     <ClInclude Include="..\Include\cpython\odictobject.h">
       <Filter>Include</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\cpython\optimizer.h">
-      <Filter>Include</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\cpython\unicodeobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -420,6 +429,9 @@
     <ClInclude Include="..\Include\cpython\methodobject.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\cpython\modsupport.h">
+      <Filter>Include\cpython</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\cpython\objimpl.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index f4dfe0e9015f02..42d87fc9cd8e64 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -195,7 +195,7 @@ _sqlite3
     Homepage:
         https://www.sqlite.org/
 _tkinter
-    Wraps version 8.6.6 of the Tk windowing system, which is downloaded
+    Wraps version 8.6.15 of the Tk windowing system, which is downloaded
     from our binaries repository at
     https://github.com/python/cpython-bin-deps.
 
diff --git a/PCbuild/regen.targets b/PCbuild/regen.targets
index 4aa14ed1fad9eb..416241d9d0df10 100644
--- a/PCbuild/regen.targets
+++ b/PCbuild/regen.targets
@@ -90,23 +90,23 @@
           Inputs="@(_CasesSources)" Outputs="@(_CasesOutputs)"
           DependsOnTargets="FindPythonForBuild">
     <Message Text="Regenerate cases" Importance="high" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\opcode_id_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\opcode_id_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\target_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\target_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\uop_id_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\uop_id_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\py_metadata_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\py_metadata_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\tier1_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\tier1_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\tier2_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\tier2_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\optimizer_generator.py $(PySourcePath)Python\optimizer_bytecodes.c $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\optimizer_generator.py Python\optimizer_bytecodes.c Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\opcode_metadata_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\opcode_metadata_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
-    <Exec Command="$(PythonForBuild) $(PySourcePath)Tools\cases_generator\uop_metadata_generator.py $(PySourcePath)Python\bytecodes.c"
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\uop_metadata_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
   </Target>
 
diff --git a/PCbuild/tcltk.props b/PCbuild/tcltk.props
index 8ddf01d5dd1dca..2aa3b7a1e42683 100644
--- a/PCbuild/tcltk.props
+++ b/PCbuild/tcltk.props
@@ -2,7 +2,7 @@
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="pyproject.props" Condition="$(__PyProject_Props_Imported) != 'true'" />
   <PropertyGroup>
-    <TclVersion Condition="$(TclVersion) == ''">8.6.13.1</TclVersion>
+    <TclVersion Condition="$(TclVersion) == ''">8.6.15.0</TclVersion>
     <TkVersion Condition="$(TkVersion) == ''">$(TclVersion)</TkVersion>
     <TclMajorVersion>$([System.Version]::Parse($(TclVersion)).Major)</TclMajorVersion>
     <TclMinorVersion>$([System.Version]::Parse($(TclVersion)).Minor)</TclMinorVersion>
diff --git a/PCbuild/venvwlauncher.vcxproj b/PCbuild/venvwlauncher.vcxproj
index 1b61718201367f..db7128272f06db 100644
--- a/PCbuild/venvwlauncher.vcxproj
+++ b/PCbuild/venvwlauncher.vcxproj
@@ -92,7 +92,7 @@
   <PropertyGroup Label="UserMacros" />
   <ItemDefinitionGroup>
     <ClCompile>
-      <PreprocessorDefinitions>EXENAME=L"$(PyExeName)$(PyDebugExt).exe";_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>EXENAME=L"$(PyWExeName)$(PyDebugExt).exe";_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
     </ClCompile>
     <ResourceCompile>
diff --git a/Parser/action_helpers.c b/Parser/action_helpers.c
index 3f6c282ffa7a68..98f9091ee43f90 100644
--- a/Parser/action_helpers.c
+++ b/Parser/action_helpers.c
@@ -3,6 +3,7 @@
 #include "pegen.h"
 #include "string_parser.h"
 #include "pycore_runtime.h"         // _PyRuntime
+#include "pycore_pystate.h"         // _PyInterpreterState_GET()
 
 void *
 _PyPegen_dummy_name(Parser *p, ...)
@@ -123,7 +124,8 @@ _PyPegen_join_names_with_dot(Parser *p, expr_ty first_name, expr_ty second_name)
     if (!uni) {
         return NULL;
     }
-    PyUnicode_InternInPlace(&uni);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternImmortal(interp, &uni);
     if (_PyArena_AddPyObject(p->arena, uni) < 0) {
         Py_DECREF(uni);
         return NULL;
@@ -997,8 +999,16 @@ _PyPegen_setup_full_format_spec(Parser *p, Token *colon, asdl_expr_seq *spec, in
         assert(j == non_empty_count);
         spec = resized_spec;
     }
-    expr_ty res = _PyAST_JoinedStr(spec, lineno, col_offset, end_lineno,
-                                   end_col_offset, p->arena);
+    expr_ty res;
+    Py_ssize_t n = asdl_seq_LEN(spec);
+    if (n == 0 || (n == 1 && asdl_seq_GET(spec, 0)->kind == Constant_kind)) {
+        res = _PyAST_JoinedStr(spec, lineno, col_offset, end_lineno,
+                                    end_col_offset, p->arena);
+    } else {
+        res = _PyPegen_concatenate_strings(p, spec,
+                             lineno, col_offset, end_lineno,
+                             end_col_offset, arena);
+    }
     if (!res) {
         return NULL;
     }
@@ -1108,6 +1118,9 @@ expr_ty _PyPegen_collect_call_seqs(Parser *p, asdl_expr_seq *a, asdl_seq *b,
     }
 
     asdl_expr_seq *args = _Py_asdl_expr_seq_new(total_len, arena);
+    if (args == NULL) {
+        return NULL;
+    }
 
     Py_ssize_t i = 0;
     for (i = 0; i < args_len; i++) {
@@ -1256,9 +1269,9 @@ _PyPegen_decode_fstring_part(Parser* p, int is_raw, expr_ty constant, Token* tok
                            p->arena);
 }
 
-static asdl_expr_seq *
-unpack_top_level_joined_strs(Parser *p, asdl_expr_seq *raw_expressions)
-{
+expr_ty
+_PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* expr, Token*b) {
+
     /* The parser might put multiple f-string values into an individual
      * JoinedStr node at the top level due to stuff like f-string debugging
      * expressions. This function flattens those and promotes them to the
@@ -1266,40 +1279,14 @@ unpack_top_level_joined_strs(Parser *p, asdl_expr_seq *raw_expressions)
      * of the regular output, so this is not necessary if you are not going
      * to expose the output AST to Python level. */
 
-    Py_ssize_t i, req_size, raw_size;
-
-    req_size = raw_size = asdl_seq_LEN(raw_expressions);
-    expr_ty expr;
-    for (i = 0; i < raw_size; i++) {
-        expr = asdl_seq_GET(raw_expressions, i);
-        if (expr->kind == JoinedStr_kind) {
-            req_size += asdl_seq_LEN(expr->v.JoinedStr.values) - 1;
-        }
-    }
-
-    asdl_expr_seq *expressions = _Py_asdl_expr_seq_new(req_size, p->arena);
-
-    Py_ssize_t raw_index, req_index = 0;
-    for (raw_index = 0; raw_index < raw_size; raw_index++) {
-        expr = asdl_seq_GET(raw_expressions, raw_index);
-        if (expr->kind == JoinedStr_kind) {
-            asdl_expr_seq *values = expr->v.JoinedStr.values;
-            for (Py_ssize_t n = 0; n < asdl_seq_LEN(values); n++) {
-                asdl_seq_SET(expressions, req_index, asdl_seq_GET(values, n));
-                req_index++;
-            }
-        } else {
-            asdl_seq_SET(expressions, req_index, expr);
-            req_index++;
+    Py_ssize_t n_items = asdl_seq_LEN(expr);
+    Py_ssize_t total_items = n_items;
+    for (Py_ssize_t i = 0; i < n_items; i++) {
+        expr_ty item = asdl_seq_GET(expr, i);
+        if (item->kind == JoinedStr_kind) {
+            total_items += asdl_seq_LEN(item->v.JoinedStr.values) - 1;
         }
     }
-    return expressions;
-}
-
-expr_ty
-_PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b) {
-    asdl_expr_seq *expr = unpack_top_level_joined_strs(p, raw_expressions);
-    Py_ssize_t n_items = asdl_seq_LEN(expr);
 
     const char* quote_str = PyBytes_AsString(a->bytes);
     if (quote_str == NULL) {
@@ -1307,7 +1294,7 @@ _PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b
     }
     int is_raw = strpbrk(quote_str, "rR") != NULL;
 
-    asdl_expr_seq *seq = _Py_asdl_expr_seq_new(n_items, p->arena);
+    asdl_expr_seq *seq = _Py_asdl_expr_seq_new(total_items, p->arena);
     if (seq == NULL) {
         return NULL;
     }
@@ -1315,6 +1302,31 @@ _PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b
     Py_ssize_t index = 0;
     for (Py_ssize_t i = 0; i < n_items; i++) {
         expr_ty item = asdl_seq_GET(expr, i);
+
+        // This should correspond to a JoinedStr node of two elements
+        // created _PyPegen_formatted_value. This situation can only be the result of
+        // a f-string debug expression where the first element is a constant with the text and the second
+        // a formatted value with the expression.
+        if (item->kind == JoinedStr_kind) {
+            asdl_expr_seq *values = item->v.JoinedStr.values;
+            if (asdl_seq_LEN(values) != 2) {
+                PyErr_Format(PyExc_SystemError,
+                             "unexpected JoinedStr node without debug data in f-string at line %d",
+                             item->lineno);
+                return NULL;
+            }
+
+            expr_ty first = asdl_seq_GET(values, 0);
+            assert(first->kind == Constant_kind);
+            asdl_seq_SET(seq, index++, first);
+
+            expr_ty second = asdl_seq_GET(values, 1);
+            assert(second->kind == FormattedValue_kind);
+            asdl_seq_SET(seq, index++, second);
+
+            continue;
+        }
+
         if (item->kind == Constant_kind) {
             item = _PyPegen_decode_fstring_part(p, is_raw, item, b);
             if (item == NULL) {
@@ -1333,7 +1345,7 @@ _PyPegen_joined_str(Parser *p, Token* a, asdl_expr_seq* raw_expressions, Token*b
     }
 
     asdl_expr_seq *resized_exprs;
-    if (index != n_items) {
+    if (index != total_items) {
         resized_exprs = _Py_asdl_expr_seq_new(index, p->arena);
         if (resized_exprs == NULL) {
             return NULL;
@@ -1462,7 +1474,6 @@ expr_ty _PyPegen_formatted_value(Parser *p, expr_ty expression, Token *debug, Re
             debug_end_offset = end_col_offset;
             debug_metadata = closing_brace->metadata;
         }
-
         expr_ty debug_text = _PyAST_Constant(debug_metadata, NULL, lineno, col_offset + 1, debug_end_line,
                                              debug_end_offset - 1, p->arena);
         if (!debug_text) {
@@ -1470,6 +1481,9 @@ expr_ty _PyPegen_formatted_value(Parser *p, expr_ty expression, Token *debug, Re
         }
 
         asdl_expr_seq *values = _Py_asdl_expr_seq_new(2, arena);
+        if (values == NULL) {
+            return NULL;
+        }
         asdl_seq_SET(values, 0, debug_text);
         asdl_seq_SET(values, 1, formatted_value);
         return _PyAST_JoinedStr(values, lineno, col_offset, debug_end_line, debug_end_offset, p->arena);
@@ -1495,16 +1509,23 @@ _PyPegen_concatenate_strings(Parser *p, asdl_expr_seq *strings,
     Py_ssize_t n_flattened_elements = 0;
     for (i = 0; i < len; i++) {
         expr_ty elem = asdl_seq_GET(strings, i);
-        if (elem->kind == Constant_kind) {
-            if (PyBytes_CheckExact(elem->v.Constant.value)) {
-                bytes_found = 1;
-            } else {
-                unicode_string_found = 1;
-            }
-            n_flattened_elements++;
-        } else {
-            n_flattened_elements += asdl_seq_LEN(elem->v.JoinedStr.values);
-            f_string_found = 1;
+        switch(elem->kind) {
+            case Constant_kind:
+                if (PyBytes_CheckExact(elem->v.Constant.value)) {
+                    bytes_found = 1;
+                } else {
+                    unicode_string_found = 1;
+                }
+                n_flattened_elements++;
+                break;
+            case JoinedStr_kind:
+                n_flattened_elements += asdl_seq_LEN(elem->v.JoinedStr.values);
+                f_string_found = 1;
+                break;
+            default:
+                n_flattened_elements++;
+                f_string_found = 1;
+                break;
         }
     }
 
@@ -1546,16 +1567,19 @@ _PyPegen_concatenate_strings(Parser *p, asdl_expr_seq *strings,
     Py_ssize_t j = 0;
     for (i = 0; i < len; i++) {
         expr_ty elem = asdl_seq_GET(strings, i);
-        if (elem->kind == Constant_kind) {
-            asdl_seq_SET(flattened, current_pos++, elem);
-        } else {
-            for (j = 0; j < asdl_seq_LEN(elem->v.JoinedStr.values); j++) {
-                expr_ty subvalue = asdl_seq_GET(elem->v.JoinedStr.values, j);
-                if (subvalue == NULL) {
-                    return NULL;
+        switch(elem->kind) {
+            case JoinedStr_kind:
+                for (j = 0; j < asdl_seq_LEN(elem->v.JoinedStr.values); j++) {
+                    expr_ty subvalue = asdl_seq_GET(elem->v.JoinedStr.values, j);
+                    if (subvalue == NULL) {
+                        return NULL;
+                    }
+                    asdl_seq_SET(flattened, current_pos++, subvalue);
                 }
-                asdl_seq_SET(flattened, current_pos++, subvalue);
-            }
+                break;
+            default:
+                asdl_seq_SET(flattened, current_pos++, elem);
+                break;
         }
     }
 
diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index 11d59faeb0d42c..936317b7ae6e0c 100755
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -880,20 +880,18 @@ def visitModule(self, mod):
 
     Py_ssize_t i, numfields = 0;
     int res = -1;
-    PyObject *key, *value, *fields, *remaining_fields = NULL;
-    if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
+    PyObject *key, *value, *fields, *attributes = NULL, *remaining_fields = NULL;
+
+    fields = PyObject_GetAttr((PyObject*)Py_TYPE(self), state->_fields);
+    if (fields == NULL) {
         goto cleanup;
     }
-    if (fields) {
-        numfields = PySequence_Size(fields);
-        if (numfields == -1) {
-            goto cleanup;
-        }
-        remaining_fields = PySet_New(fields);
-    }
-    else {
-        remaining_fields = PySet_New(NULL);
+
+    numfields = PySequence_Size(fields);
+    if (numfields == -1) {
+        goto cleanup;
     }
+    remaining_fields = PySet_New(fields);
     if (remaining_fields == NULL) {
         goto cleanup;
     }
@@ -947,22 +945,32 @@ def visitModule(self, mod):
                     goto cleanup;
                 }
             }
-            else if (
-                PyUnicode_CompareWithASCIIString(key, "lineno") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "col_offset") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "end_lineno") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "end_col_offset") != 0
-            ) {
-                if (PyErr_WarnFormat(
-                    PyExc_DeprecationWarning, 1,
-                    "%.400s.__init__ got an unexpected keyword argument '%U'. "
-                    "Support for arbitrary keyword arguments is deprecated "
-                    "and will be removed in Python 3.15.",
-                    Py_TYPE(self)->tp_name, key
-                ) < 0) {
+            else {
+                // Lazily initialize "attributes"
+                if (attributes == NULL) {
+                    attributes = PyObject_GetAttr((PyObject*)Py_TYPE(self), state->_attributes);
+                    if (attributes == NULL) {
+                        res = -1;
+                        goto cleanup;
+                    }
+                }
+                int contains = PySequence_Contains(attributes, key);
+                if (contains == -1) {
                     res = -1;
                     goto cleanup;
                 }
+                else if (contains == 0) {
+                    if (PyErr_WarnFormat(
+                        PyExc_DeprecationWarning, 1,
+                        "%.400s.__init__ got an unexpected keyword argument '%U'. "
+                        "Support for arbitrary keyword arguments is deprecated "
+                        "and will be removed in Python 3.15.",
+                        Py_TYPE(self)->tp_name, key
+                    ) < 0) {
+                        res = -1;
+                        goto cleanup;
+                    }
+                }
             }
             res = PyObject_SetAttr(self, key, value);
             if (res < 0) {
@@ -1022,6 +1030,13 @@ def visitModule(self, mod):
                     goto set_remaining_cleanup;
                 }
             }
+            else if (type == state->expr_context_type) {
+                // special case for expr_context: default to Load()
+                res = PyObject_SetAttr(self, name, state->Load_singleton);
+                if (res < 0) {
+                    goto set_remaining_cleanup;
+                }
+            }
             else {
                 // simple field (e.g., identifier)
                 if (PyErr_WarnFormat(
@@ -1038,6 +1053,7 @@ def visitModule(self, mod):
         Py_DECREF(field_types);
     }
   cleanup:
+    Py_XDECREF(attributes);
     Py_XDECREF(fields);
     Py_XDECREF(remaining_fields);
     return res;
@@ -1057,17 +1073,22 @@ def visitModule(self, mod):
         return NULL;
     }
 
-    PyObject *dict = NULL, *fields = NULL, *remaining_fields = NULL,
-             *remaining_dict = NULL, *positional_args = NULL;
+    PyObject *dict = NULL, *fields = NULL, *positional_args = NULL;
     if (PyObject_GetOptionalAttr(self, state->__dict__, &dict) < 0) {
         return NULL;
     }
     PyObject *result = NULL;
     if (dict) {
-        // Serialize the fields as positional args if possible, because if we
-        // serialize them as a dict, during unpickling they are set only *after*
-        // the object is constructed, which will now trigger a DeprecationWarning
-        // if the AST type has required fields.
+        // Unpickling (or copying) works as follows:
+        // - Construct the object with only positional arguments
+        // - Set the fields from the dict
+        // We have two constraints:
+        // - We must set all the required fields in the initial constructor call,
+        //   or the unpickling or deepcopying of the object will trigger DeprecationWarnings.
+        // - We must not include child nodes in the positional args, because
+        //   that may trigger runaway recursion during copying (gh-120108).
+        // To satisfy both constraints, we set all the fields to None in the
+        // initial list of positional args, and then set the fields from the dict.
         if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
             goto cleanup;
         }
@@ -1077,11 +1098,6 @@ def visitModule(self, mod):
                 Py_DECREF(dict);
                 goto cleanup;
             }
-            remaining_dict = PyDict_Copy(dict);
-            Py_DECREF(dict);
-            if (!remaining_dict) {
-                goto cleanup;
-            }
             positional_args = PyList_New(0);
             if (!positional_args) {
                 goto cleanup;
@@ -1092,7 +1108,7 @@ def visitModule(self, mod):
                     goto cleanup;
                 }
                 PyObject *value;
-                int rc = PyDict_Pop(remaining_dict, name, &value);
+                int rc = PyDict_GetItemRef(dict, name, &value);
                 Py_DECREF(name);
                 if (rc < 0) {
                     goto cleanup;
@@ -1100,7 +1116,7 @@ def visitModule(self, mod):
                 if (!value) {
                     break;
                 }
-                rc = PyList_Append(positional_args, value);
+                rc = PyList_Append(positional_args, Py_None);
                 Py_DECREF(value);
                 if (rc < 0) {
                     goto cleanup;
@@ -1110,8 +1126,7 @@ def visitModule(self, mod):
             if (!args_tuple) {
                 goto cleanup;
             }
-            result = Py_BuildValue("ONO", Py_TYPE(self), args_tuple,
-                                   remaining_dict);
+            result = Py_BuildValue("ONN", Py_TYPE(self), args_tuple, dict);
         }
         else {
             result = Py_BuildValue("O()N", Py_TYPE(self), dict);
@@ -1122,8 +1137,6 @@ def visitModule(self, mod):
     }
 cleanup:
     Py_XDECREF(fields);
-    Py_XDECREF(remaining_fields);
-    Py_XDECREF(remaining_dict);
     Py_XDECREF(positional_args);
     return result;
 }
@@ -1725,8 +1738,6 @@ def generate_ast_fini(module_state, f):
     for s in module_state:
         f.write("    Py_CLEAR(state->" + s + ');\n')
     f.write(textwrap.dedent("""
-                Py_CLEAR(_Py_INTERP_CACHED_OBJECT(interp, str_replace_inf));
-
                 state->finalized = 1;
                 state->once = (_PyOnceFlag){0};
             }
diff --git a/Parser/lexer/lexer.c b/Parser/lexer/lexer.c
index 82b0e4ee352d62..3ced1be0b003b8 100644
--- a/Parser/lexer/lexer.c
+++ b/Parser/lexer/lexer.c
@@ -212,9 +212,7 @@ _PyLexer_update_fstring_expr(struct tok_state *tok, char cur)
         case '}':
         case '!':
         case ':':
-            if (tok_mode->last_expr_end == -1) {
-                tok_mode->last_expr_end = strlen(tok->start);
-            }
+            tok_mode->last_expr_end = strlen(tok->start);
             break;
         default:
             Py_UNREACHABLE();
@@ -884,7 +882,7 @@ tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct t
                 return MAKE_TOKEN(ERRORTOKEN);
             }
             {
-                /* Accept floating point numbers. */
+                /* Accept floating-point numbers. */
                 if (c == '.') {
                     c = tok_nextc(tok);
         fraction:
@@ -989,6 +987,7 @@ tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct t
         the_current_tok->last_expr_buffer = NULL;
         the_current_tok->last_expr_size = 0;
         the_current_tok->last_expr_end = -1;
+        the_current_tok->in_format_spec = 0;
         the_current_tok->f_string_debug = 0;
 
         switch (*tok->start) {
@@ -1137,15 +1136,20 @@ tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct t
          * by the `{` case, so for ensuring that we are on the 0th level, we need
          * to adjust it manually */
         int cursor = current_tok->curly_bracket_depth - (c != '{');
-        if (cursor == 0 && !_PyLexer_update_fstring_expr(tok, c)) {
+        int in_format_spec = current_tok->in_format_spec;
+         int cursor_in_format_with_debug =
+             cursor == 1 && (current_tok->f_string_debug || in_format_spec);
+         int cursor_valid = cursor == 0 || cursor_in_format_with_debug;
+        if ((cursor_valid) && !_PyLexer_update_fstring_expr(tok, c)) {
             return MAKE_TOKEN(ENDMARKER);
         }
-        if (cursor == 0 && c != '{' && set_fstring_expr(tok, token, c)) {
+        if ((cursor_valid) && c != '{' && set_fstring_expr(tok, token, c)) {
             return MAKE_TOKEN(ERRORTOKEN);
         }
 
         if (c == ':' && cursor == current_tok->curly_bracket_expr_start_depth) {
             current_tok->kind = TOK_FSTRING_MODE;
+            current_tok->in_format_spec = 1;
             p_start = tok->start;
             p_end = tok->cur;
             return MAKE_TOKEN(_PyToken_OneChar(c));
@@ -1232,9 +1236,13 @@ tok_get_normal_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct t
 
         if (INSIDE_FSTRING(tok)) {
             current_tok->curly_bracket_depth--;
+            if (current_tok->curly_bracket_depth < 0) {
+                return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: unmatched '%c'", c));
+            }
             if (c == '}' && current_tok->curly_bracket_depth == current_tok->curly_bracket_expr_start_depth) {
                 current_tok->curly_bracket_expr_start_depth--;
                 current_tok->kind = TOK_FSTRING_MODE;
+                current_tok->in_format_spec = 0;
                 current_tok->f_string_debug = 0;
             }
         }
@@ -1317,11 +1325,11 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
     tok->multi_line_start = tok->line_start;
     while (end_quote_size != current_tok->f_string_quote_size) {
         int c = tok_nextc(tok);
-        if (tok->done == E_ERROR) {
+        if (tok->done == E_ERROR || tok->done == E_DECODE) {
             return MAKE_TOKEN(ERRORTOKEN);
         }
         int in_format_spec = (
-                current_tok->last_expr_end != -1
+                current_tok->in_format_spec
                 &&
                 INSIDE_FSTRING_EXPR(current_tok)
         );
@@ -1337,6 +1345,7 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
             if (in_format_spec && c == '\n') {
                 tok_backup(tok, c);
                 TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                current_tok->in_format_spec = 0;
                 p_start = tok->start;
                 p_end = tok->cur;
                 return MAKE_TOKEN(FSTRING_MIDDLE);
@@ -1378,6 +1387,9 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
         }
 
         if (c == '{') {
+            if (!_PyLexer_update_fstring_expr(tok, c)) {
+                return MAKE_TOKEN(ENDMARKER);
+            }
             int peek = tok_nextc(tok);
             if (peek != '{' || in_format_spec) {
                 tok_backup(tok, peek);
@@ -1387,6 +1399,7 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
                     return MAKE_TOKEN(_PyTokenizer_syntaxerror(tok, "f-string: expressions nested too deeply"));
                 }
                 TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                current_tok->in_format_spec = 0;
                 p_start = tok->start;
                 p_end = tok->cur;
             } else {
@@ -1406,13 +1419,15 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
             // scanning (indicated by the end of the expression being set) and we are not at the top level
             // of the bracket stack (-1 is the top level). Since format specifiers can't legally use double
             // brackets, we can bypass it here.
-            if (peek == '}' && !in_format_spec) {
+            int cursor = current_tok->curly_bracket_depth;
+            if (peek == '}' && !in_format_spec && cursor == 0) {
                 p_start = tok->start;
                 p_end = tok->cur - 1;
             } else {
                 tok_backup(tok, peek);
                 tok_backup(tok, c);
                 TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
+                current_tok->in_format_spec = 0;
                 p_start = tok->start;
                 p_end = tok->cur;
             }
diff --git a/Parser/lexer/state.c b/Parser/lexer/state.c
index 653ddafd411095..1665debea30b30 100644
--- a/Parser/lexer/state.c
+++ b/Parser/lexer/state.c
@@ -12,7 +12,8 @@
 struct tok_state *
 _PyTokenizer_tok_new(void)
 {
-    struct tok_state *tok = (struct tok_state *)PyMem_Malloc(
+    struct tok_state *tok = (struct tok_state *)PyMem_Calloc(
+                                            1,
                                             sizeof(struct tok_state));
     if (tok == NULL)
         return NULL;
@@ -74,6 +75,7 @@ free_fstring_expressions(struct tok_state *tok)
             mode->last_expr_buffer = NULL;
             mode->last_expr_size = 0;
             mode->last_expr_end = -1;
+            mode->in_format_spec = 0;
         }
     }
 }
diff --git a/Parser/lexer/state.h b/Parser/lexer/state.h
index 61d090d6d2fe21..9ed3babfdbfbf1 100644
--- a/Parser/lexer/state.h
+++ b/Parser/lexer/state.h
@@ -58,6 +58,7 @@ typedef struct _tokenizer_mode {
     Py_ssize_t last_expr_end;
     char* last_expr_buffer;
     int f_string_debug;
+    int in_format_spec;
 } tokenizer_mode;
 
 /* Tokenizer state */
diff --git a/Parser/myreadline.c b/Parser/myreadline.c
index 1825665354844b..74c44ff77717f5 100644
--- a/Parser/myreadline.c
+++ b/Parser/myreadline.c
@@ -28,7 +28,7 @@
 PyAPI_DATA(PyThreadState*) _PyOS_ReadlineTState;
 PyThreadState *_PyOS_ReadlineTState = NULL;
 
-static PyThread_type_lock _PyOS_ReadlineLock = NULL;
+static PyMutex _PyOS_ReadlineLock;
 
 int (*PyOS_InputHook)(void) = NULL;
 
@@ -373,29 +373,22 @@ PyOS_Readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
     size_t len;
 
     PyThreadState *tstate = _PyThreadState_GET();
-    if (_PyOS_ReadlineTState == tstate) {
+    if (_Py_atomic_load_ptr_relaxed(&_PyOS_ReadlineTState) == tstate) {
         PyErr_SetString(PyExc_RuntimeError,
                         "can't re-enter readline");
         return NULL;
     }
 
-
+    // GH-123321: We need to acquire the lock before setting
+    // _PyOS_ReadlineTState, otherwise the variable may be nullified by a
+    // different thread.
+    Py_BEGIN_ALLOW_THREADS
+    PyMutex_Lock(&_PyOS_ReadlineLock);
+    _Py_atomic_store_ptr_relaxed(&_PyOS_ReadlineTState, tstate);
     if (PyOS_ReadlineFunctionPointer == NULL) {
         PyOS_ReadlineFunctionPointer = PyOS_StdioReadline;
     }
 
-    if (_PyOS_ReadlineLock == NULL) {
-        _PyOS_ReadlineLock = PyThread_allocate_lock();
-        if (_PyOS_ReadlineLock == NULL) {
-            PyErr_SetString(PyExc_MemoryError, "can't allocate lock");
-            return NULL;
-        }
-    }
-
-    _PyOS_ReadlineTState = tstate;
-    Py_BEGIN_ALLOW_THREADS
-    PyThread_acquire_lock(_PyOS_ReadlineLock, 1);
-
     /* This is needed to handle the unlikely case that the
      * interpreter is in interactive mode *and* stdin/out are not
      * a tty.  This can happen, for example if python is run like
@@ -418,11 +411,12 @@ PyOS_Readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
     else {
         rv = (*PyOS_ReadlineFunctionPointer)(sys_stdin, sys_stdout, prompt);
     }
-    Py_END_ALLOW_THREADS
 
-    PyThread_release_lock(_PyOS_ReadlineLock);
-
-    _PyOS_ReadlineTState = NULL;
+    // gh-123321: Must set the variable and then release the lock before
+    // taking the GIL. Otherwise a deadlock or segfault may occur.
+    _Py_atomic_store_ptr_relaxed(&_PyOS_ReadlineTState, NULL);
+    PyMutex_Unlock(&_PyOS_ReadlineLock);
+    Py_END_ALLOW_THREADS
 
     if (rv == NULL)
         return NULL;
diff --git a/Parser/parser.c b/Parser/parser.c
index 7bfc17a92e29de..0508aa0add5b85 100644
--- a/Parser/parser.c
+++ b/Parser/parser.c
@@ -21,28 +21,28 @@ static KeywordToken *reserved_keywords[] = {
     (KeywordToken[]) {{NULL, -1}},
     (KeywordToken[]) {{NULL, -1}},
     (KeywordToken[]) {
-        {"if", 662},
-        {"as", 660},
-        {"in", 673},
+        {"if", 660},
+        {"as", 658},
+        {"in", 671},
         {"or", 581},
         {"is", 589},
         {NULL, -1},
     },
     (KeywordToken[]) {
         {"del", 616},
-        {"def", 677},
-        {"for", 672},
-        {"try", 644},
+        {"def", 675},
+        {"for", 670},
+        {"try", 642},
         {"and", 582},
-        {"not", 681},
+        {"not", 679},
         {NULL, -1},
     },
     (KeywordToken[]) {
         {"from", 621},
         {"pass", 504},
-        {"with", 635},
-        {"elif", 664},
-        {"else", 665},
+        {"with", 633},
+        {"elif", 662},
+        {"else", 663},
         {"None", 614},
         {"True", 613},
         {NULL, -1},
@@ -51,9 +51,9 @@ static KeywordToken *reserved_keywords[] = {
         {"raise", 525},
         {"yield", 580},
         {"break", 508},
-        {"async", 676},
-        {"class", 679},
-        {"while", 667},
+        {"async", 674},
+        {"class", 677},
+        {"while", 665},
         {"False", 615},
         {"await", 590},
         {NULL, -1},
@@ -63,12 +63,12 @@ static KeywordToken *reserved_keywords[] = {
         {"import", 622},
         {"assert", 529},
         {"global", 526},
-        {"except", 657},
+        {"except", 655},
         {"lambda", 612},
         {NULL, -1},
     },
     (KeywordToken[]) {
-        {"finally", 653},
+        {"finally", 651},
         {NULL, -1},
     },
     (KeywordToken[]) {
@@ -306,315 +306,314 @@ static char *soft_keywords[] = {
 #define invalid_group_type 1219
 #define invalid_import_type 1220
 #define invalid_import_from_targets_type 1221
-#define invalid_compound_stmt_type 1222
-#define invalid_with_stmt_type 1223
-#define invalid_with_stmt_indent_type 1224
-#define invalid_try_stmt_type 1225
-#define invalid_except_stmt_type 1226
-#define invalid_finally_stmt_type 1227
-#define invalid_except_stmt_indent_type 1228
-#define invalid_except_star_stmt_indent_type 1229
-#define invalid_match_stmt_type 1230
-#define invalid_case_block_type 1231
-#define invalid_as_pattern_type 1232
-#define invalid_class_pattern_type 1233
-#define invalid_class_argument_pattern_type 1234
-#define invalid_if_stmt_type 1235
-#define invalid_elif_stmt_type 1236
-#define invalid_else_stmt_type 1237
-#define invalid_while_stmt_type 1238
-#define invalid_for_stmt_type 1239
-#define invalid_def_raw_type 1240
-#define invalid_class_def_raw_type 1241
-#define invalid_double_starred_kvpairs_type 1242
-#define invalid_kvpair_type 1243
-#define invalid_starred_expression_type 1244
-#define invalid_replacement_field_type 1245
-#define invalid_conversion_character_type 1246
-#define invalid_arithmetic_type 1247
-#define invalid_factor_type 1248
-#define invalid_type_params_type 1249
-#define _loop0_1_type 1250
-#define _loop0_2_type 1251
-#define _loop1_3_type 1252
-#define _loop0_5_type 1253
-#define _gather_4_type 1254
-#define _tmp_6_type 1255
-#define _tmp_7_type 1256
-#define _tmp_8_type 1257
-#define _tmp_9_type 1258
-#define _tmp_10_type 1259
-#define _tmp_11_type 1260
-#define _tmp_12_type 1261
-#define _tmp_13_type 1262
-#define _loop1_14_type 1263
-#define _tmp_15_type 1264
-#define _tmp_16_type 1265
-#define _tmp_17_type 1266
-#define _loop0_19_type 1267
-#define _gather_18_type 1268
-#define _loop0_21_type 1269
-#define _gather_20_type 1270
-#define _tmp_22_type 1271
-#define _tmp_23_type 1272
-#define _loop0_24_type 1273
-#define _loop1_25_type 1274
-#define _loop0_27_type 1275
-#define _gather_26_type 1276
-#define _tmp_28_type 1277
-#define _loop0_30_type 1278
-#define _gather_29_type 1279
-#define _tmp_31_type 1280
-#define _loop1_32_type 1281
-#define _tmp_33_type 1282
-#define _tmp_34_type 1283
-#define _tmp_35_type 1284
-#define _loop0_36_type 1285
-#define _loop0_37_type 1286
-#define _loop0_38_type 1287
-#define _loop1_39_type 1288
-#define _loop0_40_type 1289
-#define _loop1_41_type 1290
-#define _loop1_42_type 1291
-#define _loop1_43_type 1292
-#define _loop0_44_type 1293
-#define _loop1_45_type 1294
-#define _loop0_46_type 1295
-#define _loop1_47_type 1296
-#define _loop0_48_type 1297
-#define _loop0_49_type 1298
-#define _loop1_50_type 1299
-#define _loop0_52_type 1300
-#define _gather_51_type 1301
-#define _loop0_54_type 1302
-#define _gather_53_type 1303
-#define _loop0_56_type 1304
-#define _gather_55_type 1305
-#define _loop0_58_type 1306
-#define _gather_57_type 1307
-#define _tmp_59_type 1308
-#define _loop1_60_type 1309
-#define _loop1_61_type 1310
-#define _tmp_62_type 1311
-#define _tmp_63_type 1312
-#define _loop1_64_type 1313
-#define _loop0_66_type 1314
-#define _gather_65_type 1315
-#define _tmp_67_type 1316
-#define _tmp_68_type 1317
-#define _tmp_69_type 1318
-#define _tmp_70_type 1319
-#define _loop0_72_type 1320
-#define _gather_71_type 1321
-#define _loop0_74_type 1322
-#define _gather_73_type 1323
-#define _tmp_75_type 1324
-#define _loop0_77_type 1325
-#define _gather_76_type 1326
-#define _loop0_79_type 1327
-#define _gather_78_type 1328
-#define _loop0_81_type 1329
-#define _gather_80_type 1330
-#define _loop1_82_type 1331
-#define _loop1_83_type 1332
-#define _loop0_85_type 1333
-#define _gather_84_type 1334
-#define _loop1_86_type 1335
-#define _loop1_87_type 1336
-#define _loop1_88_type 1337
-#define _tmp_89_type 1338
-#define _loop0_91_type 1339
-#define _gather_90_type 1340
-#define _tmp_92_type 1341
-#define _tmp_93_type 1342
-#define _tmp_94_type 1343
-#define _tmp_95_type 1344
-#define _tmp_96_type 1345
-#define _tmp_97_type 1346
-#define _loop0_98_type 1347
-#define _loop0_99_type 1348
-#define _loop0_100_type 1349
-#define _loop1_101_type 1350
-#define _loop0_102_type 1351
-#define _loop1_103_type 1352
-#define _loop1_104_type 1353
-#define _loop1_105_type 1354
-#define _loop0_106_type 1355
-#define _loop1_107_type 1356
-#define _loop0_108_type 1357
-#define _loop1_109_type 1358
-#define _loop0_110_type 1359
-#define _loop1_111_type 1360
-#define _loop0_112_type 1361
-#define _loop0_113_type 1362
-#define _loop1_114_type 1363
-#define _tmp_115_type 1364
-#define _loop0_117_type 1365
-#define _gather_116_type 1366
-#define _loop1_118_type 1367
-#define _loop0_119_type 1368
-#define _loop0_120_type 1369
-#define _tmp_121_type 1370
-#define _tmp_122_type 1371
-#define _loop0_124_type 1372
-#define _gather_123_type 1373
-#define _tmp_125_type 1374
-#define _loop0_127_type 1375
-#define _gather_126_type 1376
-#define _loop0_129_type 1377
-#define _gather_128_type 1378
-#define _loop0_131_type 1379
-#define _gather_130_type 1380
-#define _loop0_133_type 1381
-#define _gather_132_type 1382
-#define _loop0_134_type 1383
-#define _loop0_136_type 1384
-#define _gather_135_type 1385
-#define _loop1_137_type 1386
-#define _tmp_138_type 1387
-#define _loop0_140_type 1388
-#define _gather_139_type 1389
-#define _loop0_142_type 1390
-#define _gather_141_type 1391
-#define _loop0_144_type 1392
-#define _gather_143_type 1393
-#define _loop0_146_type 1394
-#define _gather_145_type 1395
-#define _loop0_148_type 1396
-#define _gather_147_type 1397
-#define _tmp_149_type 1398
-#define _tmp_150_type 1399
-#define _loop0_152_type 1400
-#define _gather_151_type 1401
-#define _tmp_153_type 1402
-#define _tmp_154_type 1403
-#define _tmp_155_type 1404
-#define _tmp_156_type 1405
-#define _tmp_157_type 1406
-#define _tmp_158_type 1407
-#define _tmp_159_type 1408
-#define _tmp_160_type 1409
-#define _tmp_161_type 1410
-#define _tmp_162_type 1411
-#define _loop0_163_type 1412
-#define _loop0_164_type 1413
-#define _loop0_165_type 1414
-#define _tmp_166_type 1415
-#define _tmp_167_type 1416
-#define _tmp_168_type 1417
-#define _tmp_169_type 1418
-#define _loop0_170_type 1419
-#define _loop0_171_type 1420
-#define _loop0_172_type 1421
-#define _loop1_173_type 1422
-#define _tmp_174_type 1423
-#define _loop0_175_type 1424
-#define _tmp_176_type 1425
-#define _loop0_177_type 1426
-#define _loop1_178_type 1427
-#define _tmp_179_type 1428
-#define _tmp_180_type 1429
-#define _tmp_181_type 1430
-#define _loop0_182_type 1431
-#define _tmp_183_type 1432
-#define _tmp_184_type 1433
-#define _loop1_185_type 1434
-#define _tmp_186_type 1435
-#define _loop0_187_type 1436
-#define _loop0_188_type 1437
-#define _loop0_189_type 1438
-#define _loop0_191_type 1439
-#define _gather_190_type 1440
-#define _tmp_192_type 1441
-#define _loop0_193_type 1442
-#define _tmp_194_type 1443
-#define _loop0_195_type 1444
-#define _loop1_196_type 1445
-#define _loop1_197_type 1446
-#define _tmp_198_type 1447
-#define _tmp_199_type 1448
-#define _loop0_200_type 1449
-#define _tmp_201_type 1450
-#define _tmp_202_type 1451
-#define _tmp_203_type 1452
-#define _loop0_205_type 1453
-#define _gather_204_type 1454
-#define _loop0_207_type 1455
-#define _gather_206_type 1456
-#define _loop0_209_type 1457
-#define _gather_208_type 1458
-#define _loop0_211_type 1459
-#define _gather_210_type 1460
-#define _loop0_213_type 1461
-#define _gather_212_type 1462
-#define _tmp_214_type 1463
-#define _loop0_215_type 1464
-#define _loop1_216_type 1465
-#define _tmp_217_type 1466
-#define _loop0_218_type 1467
-#define _loop1_219_type 1468
-#define _tmp_220_type 1469
-#define _tmp_221_type 1470
-#define _tmp_222_type 1471
-#define _tmp_223_type 1472
-#define _tmp_224_type 1473
-#define _tmp_225_type 1474
-#define _tmp_226_type 1475
-#define _tmp_227_type 1476
-#define _tmp_228_type 1477
-#define _tmp_229_type 1478
-#define _tmp_230_type 1479
-#define _loop0_232_type 1480
-#define _gather_231_type 1481
-#define _tmp_233_type 1482
-#define _tmp_234_type 1483
-#define _tmp_235_type 1484
-#define _tmp_236_type 1485
-#define _tmp_237_type 1486
-#define _tmp_238_type 1487
-#define _tmp_239_type 1488
-#define _loop0_240_type 1489
-#define _tmp_241_type 1490
-#define _tmp_242_type 1491
-#define _tmp_243_type 1492
-#define _tmp_244_type 1493
-#define _tmp_245_type 1494
-#define _tmp_246_type 1495
-#define _tmp_247_type 1496
-#define _tmp_248_type 1497
-#define _tmp_249_type 1498
-#define _tmp_250_type 1499
-#define _tmp_251_type 1500
-#define _tmp_252_type 1501
-#define _tmp_253_type 1502
-#define _tmp_254_type 1503
-#define _tmp_255_type 1504
-#define _tmp_256_type 1505
-#define _loop0_257_type 1506
-#define _tmp_258_type 1507
-#define _tmp_259_type 1508
-#define _tmp_260_type 1509
-#define _tmp_261_type 1510
-#define _tmp_262_type 1511
-#define _tmp_263_type 1512
-#define _tmp_264_type 1513
-#define _tmp_265_type 1514
-#define _tmp_266_type 1515
-#define _tmp_267_type 1516
-#define _tmp_268_type 1517
-#define _tmp_269_type 1518
-#define _tmp_270_type 1519
-#define _tmp_271_type 1520
-#define _tmp_272_type 1521
-#define _tmp_273_type 1522
-#define _loop0_275_type 1523
-#define _gather_274_type 1524
-#define _tmp_276_type 1525
-#define _tmp_277_type 1526
-#define _tmp_278_type 1527
-#define _tmp_279_type 1528
-#define _tmp_280_type 1529
-#define _tmp_281_type 1530
+#define invalid_with_stmt_type 1222
+#define invalid_with_stmt_indent_type 1223
+#define invalid_try_stmt_type 1224
+#define invalid_except_stmt_type 1225
+#define invalid_finally_stmt_type 1226
+#define invalid_except_stmt_indent_type 1227
+#define invalid_except_star_stmt_indent_type 1228
+#define invalid_match_stmt_type 1229
+#define invalid_case_block_type 1230
+#define invalid_as_pattern_type 1231
+#define invalid_class_pattern_type 1232
+#define invalid_class_argument_pattern_type 1233
+#define invalid_if_stmt_type 1234
+#define invalid_elif_stmt_type 1235
+#define invalid_else_stmt_type 1236
+#define invalid_while_stmt_type 1237
+#define invalid_for_stmt_type 1238
+#define invalid_def_raw_type 1239
+#define invalid_class_def_raw_type 1240
+#define invalid_double_starred_kvpairs_type 1241
+#define invalid_kvpair_type 1242
+#define invalid_starred_expression_type 1243
+#define invalid_replacement_field_type 1244
+#define invalid_conversion_character_type 1245
+#define invalid_arithmetic_type 1246
+#define invalid_factor_type 1247
+#define invalid_type_params_type 1248
+#define _loop0_1_type 1249
+#define _loop0_2_type 1250
+#define _loop1_3_type 1251
+#define _loop0_5_type 1252
+#define _gather_4_type 1253
+#define _tmp_6_type 1254
+#define _tmp_7_type 1255
+#define _tmp_8_type 1256
+#define _tmp_9_type 1257
+#define _tmp_10_type 1258
+#define _tmp_11_type 1259
+#define _tmp_12_type 1260
+#define _tmp_13_type 1261
+#define _loop1_14_type 1262
+#define _tmp_15_type 1263
+#define _tmp_16_type 1264
+#define _tmp_17_type 1265
+#define _loop0_19_type 1266
+#define _gather_18_type 1267
+#define _loop0_21_type 1268
+#define _gather_20_type 1269
+#define _tmp_22_type 1270
+#define _tmp_23_type 1271
+#define _loop0_24_type 1272
+#define _loop1_25_type 1273
+#define _loop0_27_type 1274
+#define _gather_26_type 1275
+#define _tmp_28_type 1276
+#define _loop0_30_type 1277
+#define _gather_29_type 1278
+#define _tmp_31_type 1279
+#define _loop1_32_type 1280
+#define _tmp_33_type 1281
+#define _tmp_34_type 1282
+#define _tmp_35_type 1283
+#define _loop0_36_type 1284
+#define _loop0_37_type 1285
+#define _loop0_38_type 1286
+#define _loop1_39_type 1287
+#define _loop0_40_type 1288
+#define _loop1_41_type 1289
+#define _loop1_42_type 1290
+#define _loop1_43_type 1291
+#define _loop0_44_type 1292
+#define _loop1_45_type 1293
+#define _loop0_46_type 1294
+#define _loop1_47_type 1295
+#define _loop0_48_type 1296
+#define _loop0_49_type 1297
+#define _loop1_50_type 1298
+#define _loop0_52_type 1299
+#define _gather_51_type 1300
+#define _loop0_54_type 1301
+#define _gather_53_type 1302
+#define _loop0_56_type 1303
+#define _gather_55_type 1304
+#define _loop0_58_type 1305
+#define _gather_57_type 1306
+#define _tmp_59_type 1307
+#define _loop1_60_type 1308
+#define _loop1_61_type 1309
+#define _tmp_62_type 1310
+#define _tmp_63_type 1311
+#define _loop1_64_type 1312
+#define _loop0_66_type 1313
+#define _gather_65_type 1314
+#define _tmp_67_type 1315
+#define _tmp_68_type 1316
+#define _tmp_69_type 1317
+#define _tmp_70_type 1318
+#define _loop0_72_type 1319
+#define _gather_71_type 1320
+#define _loop0_74_type 1321
+#define _gather_73_type 1322
+#define _tmp_75_type 1323
+#define _loop0_77_type 1324
+#define _gather_76_type 1325
+#define _loop0_79_type 1326
+#define _gather_78_type 1327
+#define _loop0_81_type 1328
+#define _gather_80_type 1329
+#define _loop1_82_type 1330
+#define _loop1_83_type 1331
+#define _loop0_85_type 1332
+#define _gather_84_type 1333
+#define _loop1_86_type 1334
+#define _loop1_87_type 1335
+#define _loop1_88_type 1336
+#define _tmp_89_type 1337
+#define _loop0_91_type 1338
+#define _gather_90_type 1339
+#define _tmp_92_type 1340
+#define _tmp_93_type 1341
+#define _tmp_94_type 1342
+#define _tmp_95_type 1343
+#define _tmp_96_type 1344
+#define _tmp_97_type 1345
+#define _loop0_98_type 1346
+#define _loop0_99_type 1347
+#define _loop0_100_type 1348
+#define _loop1_101_type 1349
+#define _loop0_102_type 1350
+#define _loop1_103_type 1351
+#define _loop1_104_type 1352
+#define _loop1_105_type 1353
+#define _loop0_106_type 1354
+#define _loop1_107_type 1355
+#define _loop0_108_type 1356
+#define _loop1_109_type 1357
+#define _loop0_110_type 1358
+#define _loop1_111_type 1359
+#define _loop0_112_type 1360
+#define _loop0_113_type 1361
+#define _loop1_114_type 1362
+#define _tmp_115_type 1363
+#define _loop0_117_type 1364
+#define _gather_116_type 1365
+#define _loop1_118_type 1366
+#define _loop0_119_type 1367
+#define _loop0_120_type 1368
+#define _tmp_121_type 1369
+#define _tmp_122_type 1370
+#define _loop0_124_type 1371
+#define _gather_123_type 1372
+#define _tmp_125_type 1373
+#define _loop0_127_type 1374
+#define _gather_126_type 1375
+#define _loop0_129_type 1376
+#define _gather_128_type 1377
+#define _loop0_131_type 1378
+#define _gather_130_type 1379
+#define _loop0_133_type 1380
+#define _gather_132_type 1381
+#define _loop0_134_type 1382
+#define _loop0_136_type 1383
+#define _gather_135_type 1384
+#define _loop1_137_type 1385
+#define _tmp_138_type 1386
+#define _loop0_140_type 1387
+#define _gather_139_type 1388
+#define _loop0_142_type 1389
+#define _gather_141_type 1390
+#define _loop0_144_type 1391
+#define _gather_143_type 1392
+#define _loop0_146_type 1393
+#define _gather_145_type 1394
+#define _loop0_148_type 1395
+#define _gather_147_type 1396
+#define _tmp_149_type 1397
+#define _tmp_150_type 1398
+#define _loop0_152_type 1399
+#define _gather_151_type 1400
+#define _tmp_153_type 1401
+#define _tmp_154_type 1402
+#define _tmp_155_type 1403
+#define _tmp_156_type 1404
+#define _tmp_157_type 1405
+#define _tmp_158_type 1406
+#define _tmp_159_type 1407
+#define _tmp_160_type 1408
+#define _tmp_161_type 1409
+#define _tmp_162_type 1410
+#define _loop0_163_type 1411
+#define _loop0_164_type 1412
+#define _loop0_165_type 1413
+#define _tmp_166_type 1414
+#define _tmp_167_type 1415
+#define _tmp_168_type 1416
+#define _tmp_169_type 1417
+#define _loop0_170_type 1418
+#define _loop0_171_type 1419
+#define _loop0_172_type 1420
+#define _loop1_173_type 1421
+#define _tmp_174_type 1422
+#define _loop0_175_type 1423
+#define _tmp_176_type 1424
+#define _loop0_177_type 1425
+#define _loop1_178_type 1426
+#define _tmp_179_type 1427
+#define _tmp_180_type 1428
+#define _tmp_181_type 1429
+#define _loop0_182_type 1430
+#define _tmp_183_type 1431
+#define _tmp_184_type 1432
+#define _loop1_185_type 1433
+#define _tmp_186_type 1434
+#define _loop0_187_type 1435
+#define _loop0_188_type 1436
+#define _loop0_189_type 1437
+#define _loop0_191_type 1438
+#define _gather_190_type 1439
+#define _tmp_192_type 1440
+#define _loop0_193_type 1441
+#define _tmp_194_type 1442
+#define _loop0_195_type 1443
+#define _loop1_196_type 1444
+#define _loop1_197_type 1445
+#define _tmp_198_type 1446
+#define _tmp_199_type 1447
+#define _loop0_200_type 1448
+#define _tmp_201_type 1449
+#define _tmp_202_type 1450
+#define _tmp_203_type 1451
+#define _loop0_205_type 1452
+#define _gather_204_type 1453
+#define _loop0_207_type 1454
+#define _gather_206_type 1455
+#define _loop0_209_type 1456
+#define _gather_208_type 1457
+#define _loop0_211_type 1458
+#define _gather_210_type 1459
+#define _loop0_213_type 1460
+#define _gather_212_type 1461
+#define _tmp_214_type 1462
+#define _loop0_215_type 1463
+#define _loop1_216_type 1464
+#define _tmp_217_type 1465
+#define _loop0_218_type 1466
+#define _loop1_219_type 1467
+#define _tmp_220_type 1468
+#define _tmp_221_type 1469
+#define _tmp_222_type 1470
+#define _tmp_223_type 1471
+#define _tmp_224_type 1472
+#define _tmp_225_type 1473
+#define _tmp_226_type 1474
+#define _tmp_227_type 1475
+#define _tmp_228_type 1476
+#define _tmp_229_type 1477
+#define _tmp_230_type 1478
+#define _loop0_232_type 1479
+#define _gather_231_type 1480
+#define _tmp_233_type 1481
+#define _tmp_234_type 1482
+#define _tmp_235_type 1483
+#define _tmp_236_type 1484
+#define _tmp_237_type 1485
+#define _tmp_238_type 1486
+#define _tmp_239_type 1487
+#define _loop0_240_type 1488
+#define _tmp_241_type 1489
+#define _tmp_242_type 1490
+#define _tmp_243_type 1491
+#define _tmp_244_type 1492
+#define _tmp_245_type 1493
+#define _tmp_246_type 1494
+#define _tmp_247_type 1495
+#define _tmp_248_type 1496
+#define _tmp_249_type 1497
+#define _tmp_250_type 1498
+#define _tmp_251_type 1499
+#define _tmp_252_type 1500
+#define _tmp_253_type 1501
+#define _tmp_254_type 1502
+#define _tmp_255_type 1503
+#define _tmp_256_type 1504
+#define _loop0_257_type 1505
+#define _tmp_258_type 1506
+#define _tmp_259_type 1507
+#define _tmp_260_type 1508
+#define _tmp_261_type 1509
+#define _tmp_262_type 1510
+#define _tmp_263_type 1511
+#define _tmp_264_type 1512
+#define _tmp_265_type 1513
+#define _tmp_266_type 1514
+#define _tmp_267_type 1515
+#define _tmp_268_type 1516
+#define _tmp_269_type 1517
+#define _tmp_270_type 1518
+#define _tmp_271_type 1519
+#define _tmp_272_type 1520
+#define _tmp_273_type 1521
+#define _loop0_275_type 1522
+#define _gather_274_type 1523
+#define _tmp_276_type 1524
+#define _tmp_277_type 1525
+#define _tmp_278_type 1526
+#define _tmp_279_type 1527
+#define _tmp_280_type 1528
+#define _tmp_281_type 1529
 
 static mod_ty file_rule(Parser *p);
 static mod_ty interactive_rule(Parser *p);
@@ -838,7 +837,6 @@ static void *invalid_for_target_rule(Parser *p);
 static void *invalid_group_rule(Parser *p);
 static void *invalid_import_rule(Parser *p);
 static void *invalid_import_from_targets_rule(Parser *p);
-static void *invalid_compound_stmt_rule(Parser *p);
 static void *invalid_with_stmt_rule(Parser *p);
 static void *invalid_with_stmt_indent_rule(Parser *p);
 static void *invalid_try_stmt_rule(Parser *p);
@@ -2056,7 +2054,6 @@ simple_stmt_rule(Parser *p)
 }
 
 // compound_stmt:
-//     | invalid_compound_stmt
 //     | &('def' | '@' | 'async') function_def
 //     | &'if' if_stmt
 //     | &('class' | '@') class_def
@@ -2077,25 +2074,6 @@ compound_stmt_rule(Parser *p)
     }
     stmt_ty _res = NULL;
     int _mark = p->mark;
-    if (p->call_invalid_rules) { // invalid_compound_stmt
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "invalid_compound_stmt"));
-        void *invalid_compound_stmt_var;
-        if (
-            (invalid_compound_stmt_var = invalid_compound_stmt_rule(p))  // invalid_compound_stmt
-        )
-        {
-            D(fprintf(stderr, "%*c+ compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "invalid_compound_stmt"));
-            _res = invalid_compound_stmt_var;
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "invalid_compound_stmt"));
-    }
     { // &('def' | '@' | 'async') function_def
         if (p->error_indicator) {
             p->level--;
@@ -2125,7 +2103,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'if' if_stmt"));
         stmt_ty if_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 662)  // token='if'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 660)  // token='if'
             &&
             (if_stmt_var = if_stmt_rule(p))  // if_stmt
         )
@@ -2209,7 +2187,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'try' try_stmt"));
         stmt_ty try_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 644)  // token='try'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 642)  // token='try'
             &&
             (try_stmt_var = try_stmt_rule(p))  // try_stmt
         )
@@ -2230,7 +2208,7 @@ compound_stmt_rule(Parser *p)
         D(fprintf(stderr, "%*c> compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "&'while' while_stmt"));
         stmt_ty while_stmt_var;
         if (
-            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 667)  // token='while'
+            _PyPegen_lookahead_with_int(1, _PyPegen_expect_token, p, 665)  // token='while'
             &&
             (while_stmt_var = while_stmt_rule(p))  // while_stmt
         )
@@ -4370,7 +4348,7 @@ class_def_raw_rule(Parser *p)
         asdl_stmt_seq* c;
         void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 679))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 677))  // token='class'
             &&
             (a = _PyPegen_name_token(p))  // NAME
             &&
@@ -4537,7 +4515,7 @@ function_def_raw_rule(Parser *p)
         void *t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 677))  // token='def'
+            (_keyword = _PyPegen_expect_token(p, 675))  // token='def'
             &&
             (n = _PyPegen_name_token(p))  // NAME
             &&
@@ -4598,9 +4576,9 @@ function_def_raw_rule(Parser *p)
         void *t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 677))  // token='def'
+            (_keyword_1 = _PyPegen_expect_token(p, 675))  // token='def'
             &&
             (n = _PyPegen_name_token(p))  // NAME
             &&
@@ -5938,7 +5916,7 @@ if_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         stmt_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -5983,7 +5961,7 @@ if_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6078,7 +6056,7 @@ elif_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         stmt_ty c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 664))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 662))  // token='elif'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6123,7 +6101,7 @@ elif_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 664))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 662))  // token='elif'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6204,7 +6182,7 @@ else_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 665))  // token='else'
+            (_keyword = _PyPegen_expect_token(p, 663))  // token='else'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -6283,7 +6261,7 @@ while_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 667))  // token='while'
+            (_keyword = _PyPegen_expect_token(p, 665))  // token='while'
             &&
             (a = named_expression_rule(p))  // named_expression
             &&
@@ -6383,11 +6361,11 @@ for_stmt_rule(Parser *p)
         expr_ty t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (t = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -6445,13 +6423,13 @@ for_stmt_rule(Parser *p)
         expr_ty t;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword_1 = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (t = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_2 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_2 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -6580,7 +6558,7 @@ with_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
@@ -6631,7 +6609,7 @@ with_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (a = (asdl_withitem_seq*)_gather_53_rule(p))  // ','.with_item+
             &&
@@ -6680,9 +6658,9 @@ with_stmt_rule(Parser *p)
         asdl_withitem_seq* a;
         asdl_stmt_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword_1 = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
@@ -6732,9 +6710,9 @@ with_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         void *tc;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword_1 = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (a = (asdl_withitem_seq*)_gather_57_rule(p))  // ','.with_item+
             &&
@@ -6820,7 +6798,7 @@ with_item_rule(Parser *p)
         if (
             (e = expression_rule(p))  // expression
             &&
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (t = star_target_rule(p))  // star_target
             &&
@@ -6945,7 +6923,7 @@ try_stmt_rule(Parser *p)
         asdl_stmt_seq* b;
         asdl_stmt_seq* f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -6989,7 +6967,7 @@ try_stmt_rule(Parser *p)
         asdl_excepthandler_seq* ex;
         void *f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -7037,7 +7015,7 @@ try_stmt_rule(Parser *p)
         asdl_excepthandler_seq* ex;
         void *f;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -7135,7 +7113,7 @@ except_block_rule(Parser *p)
         expr_ty e;
         void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 657))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (e = expression_rule(p))  // expression
             &&
@@ -7178,7 +7156,7 @@ except_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* b;
         if (
-            (_keyword = _PyPegen_expect_token(p, 657))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -7289,7 +7267,7 @@ except_star_block_rule(Parser *p)
         expr_ty e;
         void *t;
         if (
-            (_keyword = _PyPegen_expect_token(p, 657))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
@@ -7391,7 +7369,7 @@ finally_block_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 653))  // token='finally'
+            (_keyword = _PyPegen_expect_token(p, 651))  // token='finally'
             &&
             (_literal = _PyPegen_expect_forced_token(p, 11, ":"))  // forced_token=':'
             &&
@@ -7699,7 +7677,7 @@ guard_rule(Parser *p)
         Token * _keyword;
         expr_ty guard;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (guard = named_expression_rule(p))  // named_expression
         )
@@ -7894,7 +7872,7 @@ as_pattern_rule(Parser *p)
         if (
             (pattern = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (target = pattern_capture_target_rule(p))  // pattern_capture_target
         )
@@ -11237,11 +11215,11 @@ expression_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 665))  // token='else'
+            (_keyword_1 = _PyPegen_expect_token(p, 663))  // token='else'
             &&
             (c = expression_rule(p))  // expression
         )
@@ -12123,7 +12101,7 @@ inversion_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 681))  // token='not'
+            (_keyword = _PyPegen_expect_token(p, 679))  // token='not'
             &&
             (a = inversion_rule(p))  // inversion
         )
@@ -12777,9 +12755,9 @@ notin_bitwise_or_rule(Parser *p)
         Token * _keyword_1;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 681))  // token='not'
+            (_keyword = _PyPegen_expect_token(p, 679))  // token='not'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12825,7 +12803,7 @@ in_bitwise_or_rule(Parser *p)
         Token * _keyword;
         expr_ty a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -12874,7 +12852,7 @@ isnot_bitwise_or_rule(Parser *p)
         if (
             (_keyword = _PyPegen_expect_token(p, 589))  // token='is'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 681))  // token='not'
+            (_keyword_1 = _PyPegen_expect_token(p, 679))  // token='not'
             &&
             (a = bitwise_or_rule(p))  // bitwise_or
         )
@@ -17045,13 +17023,13 @@ for_if_clause_rule(Parser *p)
         expr_ty b;
         asdl_expr_seq* c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword_1 = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (a = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_2 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_2 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -17090,11 +17068,11 @@ for_if_clause_rule(Parser *p)
         expr_ty b;
         asdl_expr_seq* c;
         if (
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (a = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (_cut_var = 1)
             &&
@@ -17131,13 +17109,13 @@ for_if_clause_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         void *_tmp_121_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (_tmp_121_var = _tmp_121_rule(p))  // bitwise_or ((',' bitwise_or))* ','?
             &&
-            _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 673)  // token='in'
+            _PyPegen_lookahead_with_int(0, _PyPegen_expect_token, p, 671)  // token='in'
         )
         {
             D(fprintf(stderr, "%*c+ for_if_clause[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'? 'for' (bitwise_or ((',' bitwise_or))* ','?) !'in'"));
@@ -20411,11 +20389,11 @@ expression_without_invalid_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 665))  // token='else'
+            (_keyword_1 = _PyPegen_expect_token(p, 663))  // token='else'
             &&
             (c = expression_rule(p))  // expression
         )
@@ -20596,7 +20574,7 @@ invalid_expression_rule(Parser *p)
         if (
             (a = disjunction_rule(p))  // disjunction
             &&
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (b = disjunction_rule(p))  // disjunction
             &&
@@ -22534,7 +22512,7 @@ invalid_with_item_rule(Parser *p)
         if (
             (expression_var = expression_rule(p))  // expression
             &&
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (a = expression_rule(p))  // expression
             &&
@@ -22584,9 +22562,9 @@ invalid_for_target_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         expr_ty a;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (a = star_expressions_rule(p))  // star_expressions
         )
@@ -22844,82 +22822,6 @@ invalid_import_from_targets_rule(Parser *p)
     return _res;
 }
 
-// invalid_compound_stmt: 'elif' named_expression ':' | 'else' ':'
-static void *
-invalid_compound_stmt_rule(Parser *p)
-{
-    if (p->level++ == MAXSTACK) {
-        _Pypegen_stack_overflow(p);
-    }
-    if (p->error_indicator) {
-        p->level--;
-        return NULL;
-    }
-    void * _res = NULL;
-    int _mark = p->mark;
-    { // 'elif' named_expression ':'
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> invalid_compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'elif' named_expression ':'"));
-        Token * _literal;
-        Token * a;
-        expr_ty named_expression_var;
-        if (
-            (a = _PyPegen_expect_token(p, 664))  // token='elif'
-            &&
-            (named_expression_var = named_expression_rule(p))  // named_expression
-            &&
-            (_literal = _PyPegen_expect_token(p, 11))  // token=':'
-        )
-        {
-            D(fprintf(stderr, "%*c+ invalid_compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'elif' named_expression ':'"));
-            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "'elif' must match an if-statement here" );
-            if (_res == NULL && PyErr_Occurred()) {
-                p->error_indicator = 1;
-                p->level--;
-                return NULL;
-            }
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s invalid_compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'elif' named_expression ':'"));
-    }
-    { // 'else' ':'
-        if (p->error_indicator) {
-            p->level--;
-            return NULL;
-        }
-        D(fprintf(stderr, "%*c> invalid_compound_stmt[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'else' ':'"));
-        Token * _literal;
-        Token * a;
-        if (
-            (a = _PyPegen_expect_token(p, 665))  // token='else'
-            &&
-            (_literal = _PyPegen_expect_token(p, 11))  // token=':'
-        )
-        {
-            D(fprintf(stderr, "%*c+ invalid_compound_stmt[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'else' ':'"));
-            _res = RAISE_SYNTAX_ERROR_STARTING_FROM ( a , "'else' must match a valid statement here" );
-            if (_res == NULL && PyErr_Occurred()) {
-                p->error_indicator = 1;
-                p->level--;
-                return NULL;
-            }
-            goto done;
-        }
-        p->mark = _mark;
-        D(fprintf(stderr, "%*c%s invalid_compound_stmt[%d-%d]: %s failed!\n", p->level, ' ',
-                  p->error_indicator ? "ERROR!" : "-", _mark, p->mark, "'else' ':'"));
-    }
-    _res = NULL;
-  done:
-    p->level--;
-    return _res;
-}
-
 // invalid_with_stmt:
 //     | 'async'? 'with' ','.(expression ['as' star_target])+ NEWLINE
 //     | 'async'? 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' NEWLINE
@@ -22947,9 +22849,9 @@ invalid_with_stmt_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_gather_206_var = _gather_206_rule(p))  // ','.(expression ['as' star_target])+
             &&
@@ -22985,9 +22887,9 @@ invalid_with_stmt_rule(Parser *p)
         UNUSED(_opt_var_1); // Silence compiler warnings
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
@@ -23047,9 +22949,9 @@ invalid_with_stmt_indent_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 635))  // token='with'
+            (a = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_gather_210_var = _gather_210_rule(p))  // ','.(expression ['as' star_target])+
             &&
@@ -23090,9 +22992,9 @@ invalid_with_stmt_indent_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 635))  // token='with'
+            (a = _PyPegen_expect_token(p, 633))  // token='with'
             &&
             (_literal = _PyPegen_expect_token(p, 7))  // token='('
             &&
@@ -23155,7 +23057,7 @@ invalid_try_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 644))  // token='try'
+            (a = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23187,7 +23089,7 @@ invalid_try_stmt_rule(Parser *p)
         Token * _literal;
         asdl_stmt_seq* block_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23226,7 +23128,7 @@ invalid_try_stmt_rule(Parser *p)
         Token * b;
         expr_ty expression_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23234,7 +23136,7 @@ invalid_try_stmt_rule(Parser *p)
             &&
             (_loop1_216_var = _loop1_216_rule(p))  // except_block+
             &&
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (b = _PyPegen_expect_token(p, 16))  // token='*'
             &&
@@ -23273,7 +23175,7 @@ invalid_try_stmt_rule(Parser *p)
         UNUSED(_opt_var); // Silence compiler warnings
         Token * a;
         if (
-            (_keyword = _PyPegen_expect_token(p, 644))  // token='try'
+            (_keyword = _PyPegen_expect_token(p, 642))  // token='try'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23281,7 +23183,7 @@ invalid_try_stmt_rule(Parser *p)
             &&
             (_loop1_219_var = _loop1_219_rule(p))  // except_star_block+
             &&
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_opt_var = _tmp_220_rule(p), !p->error_indicator)  // [expression ['as' NAME]]
             &&
@@ -23340,7 +23242,7 @@ invalid_except_stmt_rule(Parser *p)
         expr_ty a;
         expr_ty expressions_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 657))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_opt_var = _PyPegen_expect_token(p, 16), !p->error_indicator)  // '*'?
             &&
@@ -23382,7 +23284,7 @@ invalid_except_stmt_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_opt_var = _PyPegen_expect_token(p, 16), !p->error_indicator)  // '*'?
             &&
@@ -23415,7 +23317,7 @@ invalid_except_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (newline_var = _PyPegen_expect_token(p, NEWLINE))  // token='NEWLINE'
         )
@@ -23443,7 +23345,7 @@ invalid_except_stmt_rule(Parser *p)
         void *_tmp_223_var;
         Token * a;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
@@ -23492,7 +23394,7 @@ invalid_finally_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 653))  // token='finally'
+            (a = _PyPegen_expect_token(p, 651))  // token='finally'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23548,7 +23450,7 @@ invalid_except_stmt_indent_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (expression_var = expression_rule(p))  // expression
             &&
@@ -23584,7 +23486,7 @@ invalid_except_stmt_indent_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -23640,7 +23542,7 @@ invalid_except_star_stmt_indent_rule(Parser *p)
         expr_ty expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 657))  // token='except'
+            (a = _PyPegen_expect_token(p, 655))  // token='except'
             &&
             (_literal = _PyPegen_expect_token(p, 16))  // token='*'
             &&
@@ -23879,7 +23781,7 @@ invalid_as_pattern_rule(Parser *p)
         if (
             (or_pattern_var = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (a = _PyPegen_expect_soft_keyword(p, "_"))  // soft_keyword='"_"'
         )
@@ -23909,7 +23811,7 @@ invalid_as_pattern_rule(Parser *p)
         if (
             (or_pattern_var = or_pattern_rule(p))  // or_pattern
             &&
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             _PyPegen_lookahead_with_name(0, _PyPegen_name_token, p)
             &&
@@ -24063,7 +23965,7 @@ invalid_if_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -24094,7 +23996,7 @@ invalid_if_stmt_rule(Parser *p)
         expr_ty a_1;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 662))  // token='if'
+            (a = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (a_1 = named_expression_rule(p))  // named_expression
             &&
@@ -24149,7 +24051,7 @@ invalid_elif_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 664))  // token='elif'
+            (_keyword = _PyPegen_expect_token(p, 662))  // token='elif'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -24180,7 +24082,7 @@ invalid_elif_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 664))  // token='elif'
+            (a = _PyPegen_expect_token(p, 662))  // token='elif'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -24233,7 +24135,7 @@ invalid_else_stmt_rule(Parser *p)
         Token * a;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 665))  // token='else'
+            (a = _PyPegen_expect_token(p, 663))  // token='else'
             &&
             (_literal = _PyPegen_expect_token(p, 11))  // token=':'
             &&
@@ -24286,7 +24188,7 @@ invalid_while_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 667))  // token='while'
+            (_keyword = _PyPegen_expect_token(p, 665))  // token='while'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -24317,7 +24219,7 @@ invalid_while_stmt_rule(Parser *p)
         expr_ty named_expression_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 667))  // token='while'
+            (a = _PyPegen_expect_token(p, 665))  // token='while'
             &&
             (named_expression_var = named_expression_rule(p))  // named_expression
             &&
@@ -24376,13 +24278,13 @@ invalid_for_stmt_rule(Parser *p)
         expr_ty star_expressions_var;
         expr_ty star_targets_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (star_targets_var = star_targets_rule(p))  // star_targets
             &&
-            (_keyword_1 = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword_1 = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
             &&
@@ -24417,13 +24319,13 @@ invalid_for_stmt_rule(Parser *p)
         expr_ty star_expressions_var;
         expr_ty star_targets_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 672))  // token='for'
+            (a = _PyPegen_expect_token(p, 670))  // token='for'
             &&
             (star_targets_var = star_targets_rule(p))  // star_targets
             &&
-            (_keyword = _PyPegen_expect_token(p, 673))  // token='in'
+            (_keyword = _PyPegen_expect_token(p, 671))  // token='in'
             &&
             (star_expressions_var = star_expressions_rule(p))  // star_expressions
             &&
@@ -24489,9 +24391,9 @@ invalid_def_raw_rule(Parser *p)
         expr_ty name_var;
         Token * newline_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (a = _PyPegen_expect_token(p, 677))  // token='def'
+            (a = _PyPegen_expect_token(p, 675))  // token='def'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
@@ -24548,9 +24450,9 @@ invalid_def_raw_rule(Parser *p)
         asdl_stmt_seq* block_var;
         expr_ty name_var;
         if (
-            (_opt_var = _PyPegen_expect_token(p, 676), !p->error_indicator)  // 'async'?
+            (_opt_var = _PyPegen_expect_token(p, 674), !p->error_indicator)  // 'async'?
             &&
-            (_keyword = _PyPegen_expect_token(p, 677))  // token='def'
+            (_keyword = _PyPegen_expect_token(p, 675))  // token='def'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
@@ -24614,7 +24516,7 @@ invalid_class_def_raw_rule(Parser *p)
         expr_ty name_var;
         Token * newline_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 679))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 677))  // token='class'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
@@ -24653,7 +24555,7 @@ invalid_class_def_raw_rule(Parser *p)
         expr_ty name_var;
         Token * newline_var;
         if (
-            (a = _PyPegen_expect_token(p, 679))  // token='class'
+            (a = _PyPegen_expect_token(p, 677))  // token='class'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
             &&
@@ -25428,7 +25330,7 @@ invalid_arithmetic_rule(Parser *p)
             &&
             (_tmp_243_var = _tmp_243_rule(p))  // '+' | '-' | '*' | '/' | '%' | '//' | '@'
             &&
-            (a = _PyPegen_expect_token(p, 681))  // token='not'
+            (a = _PyPegen_expect_token(p, 679))  // token='not'
             &&
             (b = inversion_rule(p))  // inversion
         )
@@ -25477,7 +25379,7 @@ invalid_factor_rule(Parser *p)
         if (
             (_tmp_244_var = _tmp_244_rule(p))  // '+' | '-' | '~'
             &&
-            (a = _PyPegen_expect_token(p, 681))  // token='not'
+            (a = _PyPegen_expect_token(p, 679))  // token='not'
             &&
             (b = factor_rule(p))  // factor
         )
@@ -25948,7 +25850,7 @@ _tmp_7_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'def'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 677))  // token='def'
+            (_keyword = _PyPegen_expect_token(p, 675))  // token='def'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'def'"));
@@ -25986,7 +25888,7 @@ _tmp_7_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_7[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_7[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
@@ -26024,7 +25926,7 @@ _tmp_8_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_8[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'class'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 679))  // token='class'
+            (_keyword = _PyPegen_expect_token(p, 677))  // token='class'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_8[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'class'"));
@@ -26081,7 +25983,7 @@ _tmp_9_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'with'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 635))  // token='with'
+            (_keyword = _PyPegen_expect_token(p, 633))  // token='with'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'with'"));
@@ -26100,7 +26002,7 @@ _tmp_9_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_9[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_9[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
@@ -26138,7 +26040,7 @@ _tmp_10_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'for'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 672))  // token='for'
+            (_keyword = _PyPegen_expect_token(p, 670))  // token='for'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'for'"));
@@ -26157,7 +26059,7 @@ _tmp_10_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_10[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'async'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 676))  // token='async'
+            (_keyword = _PyPegen_expect_token(p, 674))  // token='async'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_10[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'async'"));
@@ -27181,7 +27083,7 @@ _tmp_28_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
@@ -27344,7 +27246,7 @@ _tmp_31_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
@@ -29331,7 +29233,7 @@ _tmp_62_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
@@ -29377,7 +29279,7 @@ _tmp_63_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (z = _PyPegen_name_token(p))  // NAME
         )
@@ -35264,7 +35166,7 @@ _tmp_159_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_159[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'else'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 665))  // token='else'
+            (_keyword = _PyPegen_expect_token(p, 663))  // token='else'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_159[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'else'"));
@@ -38800,7 +38702,7 @@ _tmp_214_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_214[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'except'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 657))  // token='except'
+            (_keyword = _PyPegen_expect_token(p, 655))  // token='except'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_214[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'except'"));
@@ -38819,7 +38721,7 @@ _tmp_214_rule(Parser *p)
         D(fprintf(stderr, "%*c> _tmp_214[%d-%d]: %s\n", p->level, ' ', _mark, p->mark, "'finally'"));
         Token * _keyword;
         if (
-            (_keyword = _PyPegen_expect_token(p, 653))  // token='finally'
+            (_keyword = _PyPegen_expect_token(p, 651))  // token='finally'
         )
         {
             D(fprintf(stderr, "%*c+ _tmp_214[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "'finally'"));
@@ -38997,7 +38899,7 @@ _tmp_217_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -39219,7 +39121,7 @@ _tmp_221_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -39260,7 +39162,7 @@ _tmp_222_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -39358,7 +39260,7 @@ _tmp_224_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -39399,7 +39301,7 @@ _tmp_225_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -41094,7 +40996,7 @@ _tmp_255_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (z = disjunction_rule(p))  // disjunction
         )
@@ -41140,7 +41042,7 @@ _tmp_256_rule(Parser *p)
         Token * _keyword;
         expr_ty z;
         if (
-            (_keyword = _PyPegen_expect_token(p, 662))  // token='if'
+            (_keyword = _PyPegen_expect_token(p, 660))  // token='if'
             &&
             (z = disjunction_rule(p))  // disjunction
         )
@@ -41853,7 +41755,7 @@ _tmp_271_rule(Parser *p)
         Token * _keyword;
         expr_ty name_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (name_var = _PyPegen_name_token(p))  // NAME
         )
@@ -42112,7 +42014,7 @@ _tmp_276_rule(Parser *p)
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
@@ -42153,7 +42055,7 @@ _tmp_277_rule(Parser *p)
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
@@ -42194,7 +42096,7 @@ _tmp_278_rule(Parser *p)
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
@@ -42235,7 +42137,7 @@ _tmp_279_rule(Parser *p)
         Token * _keyword;
         expr_ty star_target_var;
         if (
-            (_keyword = _PyPegen_expect_token(p, 660))  // token='as'
+            (_keyword = _PyPegen_expect_token(p, 658))  // token='as'
             &&
             (star_target_var = star_target_rule(p))  // star_target
         )
diff --git a/Parser/pegen.c b/Parser/pegen.c
index 3d3e64559403b1..0c3c4689dd7ce6 100644
--- a/Parser/pegen.c
+++ b/Parser/pegen.c
@@ -1,6 +1,7 @@
 #include <Python.h>
 #include "pycore_ast.h"           // _PyAST_Validate(),
 #include "pycore_pystate.h"       // _PyThreadState_GET()
+#include "pycore_pyerrors.h"      // PyExc_IncompleteInputError
 #include <errcode.h>
 
 #include "lexer/lexer.h"
@@ -18,6 +19,31 @@ _PyPegen_interactive_exit(Parser *p)
     return NULL;
 }
 
+Py_ssize_t
+_PyPegen_byte_offset_to_character_offset_line(PyObject *line, Py_ssize_t col_offset, Py_ssize_t end_col_offset)
+{
+    const char *data = PyUnicode_AsUTF8(line);
+
+    Py_ssize_t len = 0;
+    while (col_offset < end_col_offset) {
+        Py_UCS4 ch = data[col_offset];
+        if (ch < 0x80) {
+            col_offset += 1;
+        } else if ((ch & 0xe0) == 0xc0) {
+            col_offset += 2;
+        } else if ((ch & 0xf0) == 0xe0) {
+            col_offset += 3;
+        } else if ((ch & 0xf8) == 0xf0) {
+            col_offset += 4;
+        } else {
+            PyErr_SetString(PyExc_ValueError, "Invalid UTF-8 sequence");
+            return -1;
+        }
+        len++;
+    }
+    return len;
+}
+
 Py_ssize_t
 _PyPegen_byte_offset_to_character_offset_raw(const char* str, Py_ssize_t col_offset)
 {
@@ -270,12 +296,22 @@ _PyPegen_fill_token(Parser *p)
 #define NSTATISTICS _PYPEGEN_NSTATISTICS
 #define memo_statistics _PyRuntime.parser.memo_statistics
 
+#ifdef Py_GIL_DISABLED
+#define MUTEX_LOCK() PyMutex_Lock(&_PyRuntime.parser.mutex)
+#define MUTEX_UNLOCK() PyMutex_Unlock(&_PyRuntime.parser.mutex)
+#else
+#define MUTEX_LOCK()
+#define MUTEX_UNLOCK()
+#endif
+
 void
 _PyPegen_clear_memo_statistics(void)
 {
+    MUTEX_LOCK();
     for (int i = 0; i < NSTATISTICS; i++) {
         memo_statistics[i] = 0;
     }
+    MUTEX_UNLOCK();
 }
 
 PyObject *
@@ -285,18 +321,23 @@ _PyPegen_get_memo_statistics(void)
     if (ret == NULL) {
         return NULL;
     }
+
+    MUTEX_LOCK();
     for (int i = 0; i < NSTATISTICS; i++) {
         PyObject *value = PyLong_FromLong(memo_statistics[i]);
         if (value == NULL) {
+            MUTEX_UNLOCK();
             Py_DECREF(ret);
             return NULL;
         }
         // PyList_SetItem borrows a reference to value.
         if (PyList_SetItem(ret, i, value) < 0) {
+            MUTEX_UNLOCK();
             Py_DECREF(ret);
             return NULL;
         }
     }
+    MUTEX_UNLOCK();
     return ret;
 }
 #endif
@@ -315,14 +356,16 @@ _PyPegen_is_memoized(Parser *p, int type, void *pres)
 
     for (Memo *m = t->memo; m != NULL; m = m->next) {
         if (m->type == type) {
-#if defined(PY_DEBUG)
+#if defined(Py_DEBUG)
             if (0 <= type && type < NSTATISTICS) {
                 long count = m->mark - p->mark;
                 // A memoized negative result counts for one.
                 if (count <= 0) {
                     count = 1;
                 }
+                MUTEX_LOCK();
                 memo_statistics[type] += count;
+                MUTEX_UNLOCK();
             }
 #endif
             p->mark = m->mark;
@@ -502,7 +545,8 @@ _PyPegen_new_identifier(Parser *p, const char *n)
         }
         id = id2;
     }
-    PyUnicode_InternInPlace(&id);
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyUnicode_InternImmortal(interp, &id);
     if (_PyArena_AddPyObject(p->arena, id) < 0)
     {
         Py_DECREF(id);
diff --git a/Parser/pegen.h b/Parser/pegen.h
index 57b45a54c36c57..32c64e7774b878 100644
--- a/Parser/pegen.h
+++ b/Parser/pegen.h
@@ -148,6 +148,7 @@ int _PyPegen_fill_token(Parser *p);
 expr_ty _PyPegen_name_token(Parser *p);
 expr_ty _PyPegen_number_token(Parser *p);
 void *_PyPegen_string_token(Parser *p);
+Py_ssize_t _PyPegen_byte_offset_to_character_offset_line(PyObject *line, Py_ssize_t col_offset, Py_ssize_t end_col_offset);
 Py_ssize_t _PyPegen_byte_offset_to_character_offset(PyObject *line, Py_ssize_t col_offset);
 Py_ssize_t _PyPegen_byte_offset_to_character_offset_raw(const char*, Py_ssize_t col_offset);
 
diff --git a/Parser/string_parser.c b/Parser/string_parser.c
index bacfd815441110..9537c543b0eb93 100644
--- a/Parser/string_parser.c
+++ b/Parser/string_parser.c
@@ -18,7 +18,7 @@ warn_invalid_escape_sequence(Parser *p, const char *first_invalid_escape, Token
         // to avoid showing the warning twice.
         return 0;
     }
-    unsigned char c = *first_invalid_escape;
+    unsigned char c = (unsigned char)*first_invalid_escape;
     if ((t->type == FSTRING_MIDDLE || t->type == FSTRING_END) && (c == '{' || c == '}')) {
         // in this case the tokenizer has already emitted a warning,
         // see Parser/tokenizer/helpers.c:warn_invalid_escape_sequence
@@ -90,12 +90,12 @@ decode_unicode_with_escapes(Parser *parser, const char *s, size_t len, Token *t)
     const char *end;
 
     /* check for integer overflow */
-    if (len > SIZE_MAX / 6) {
+    if (len > (size_t)PY_SSIZE_T_MAX / 6) {
         return NULL;
     }
     /* "ä" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5
        "\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */
-    u = PyBytes_FromStringAndSize((char *)NULL, len * 6);
+    u = PyBytes_FromStringAndSize((char *)NULL, (Py_ssize_t)len * 6);
     if (u == NULL) {
         return NULL;
     }
@@ -142,11 +142,11 @@ decode_unicode_with_escapes(Parser *parser, const char *s, size_t len, Token *t)
             *p++ = *s++;
         }
     }
-    len = p - buf;
+    len = (size_t)(p - buf);
     s = buf;
 
     const char *first_invalid_escape;
-    v = _PyUnicode_DecodeUnicodeEscapeInternal(s, len, NULL, NULL, &first_invalid_escape);
+    v = _PyUnicode_DecodeUnicodeEscapeInternal(s, (Py_ssize_t)len, NULL, NULL, &first_invalid_escape);
 
     // HACK: later we can simply pass the line no, since we don't preserve the tokens
     // when we are decoding the string but we preserve the line numbers.
@@ -185,7 +185,7 @@ PyObject *
 _PyPegen_decode_string(Parser *p, int raw, const char *s, size_t len, Token *t)
 {
     if (raw) {
-        return PyUnicode_DecodeUTF8Stateful(s, len, NULL, NULL);
+        return PyUnicode_DecodeUTF8Stateful(s, (Py_ssize_t)len, NULL, NULL);
     }
     return decode_unicode_with_escapes(p, s, len, t);
 }
@@ -229,9 +229,14 @@ _PyPegen_parse_string(Parser *p, Token *t)
         PyErr_BadInternalCall();
         return NULL;
     }
+
     /* Skip the leading quote char. */
     s++;
     len = strlen(s);
+    // gh-120155: 's' contains at least the trailing quote,
+    // so the code '--len' below is safe.
+    assert(len >= 1);
+
     if (len > INT_MAX) {
         PyErr_SetString(PyExc_OverflowError, "string to parse is too long");
         return NULL;
@@ -269,9 +274,9 @@ _PyPegen_parse_string(Parser *p, Token *t)
             }
         }
         if (rawmode) {
-            return PyBytes_FromStringAndSize(s, len);
+            return PyBytes_FromStringAndSize(s, (Py_ssize_t)len);
         }
-        return decode_bytes_with_escapes(p, s, len, t);
+        return decode_bytes_with_escapes(p, s, (Py_ssize_t)len, t);
     }
     return _PyPegen_decode_string(p, rawmode, s, len, t);
 }
diff --git a/Programs/_freeze_module.c b/Programs/_freeze_module.c
index 2a462a42cdad7c..891e4256e897ab 100644
--- a/Programs/_freeze_module.c
+++ b/Programs/_freeze_module.c
@@ -110,6 +110,9 @@ static PyObject *
 compile_and_marshal(const char *name, const char *text)
 {
     char *filename = (char *) malloc(strlen(name) + 10);
+    if (filename == NULL) {
+        return PyErr_NoMemory();
+    }
     sprintf(filename, "<frozen %s>", name);
     PyObject *code = Py_CompileStringExFlags(text, filename,
                                              Py_file_input, NULL, 0);
@@ -133,6 +136,9 @@ get_varname(const char *name, const char *prefix)
 {
     size_t n = strlen(prefix);
     char *varname = (char *) malloc(strlen(name) + n + 1);
+    if (varname == NULL) {
+        return NULL;
+    }
     (void)strcpy(varname, prefix);
     for (size_t i = 0; name[i] != '\0'; i++) {
         if (name[i] == '.') {
@@ -178,6 +184,11 @@ write_frozen(const char *outpath, const char *inpath, const char *name,
 
     fprintf(outfile, "%s\n", header);
     char *arrayname = get_varname(name, "_Py_M__");
+    if (arrayname == NULL) {
+        fprintf(stderr, "memory error: could not allocate varname\n");
+        fclose(outfile);
+        return -1;
+    }
     write_code(outfile, marshalled, arrayname);
     free(arrayname);
 
diff --git a/Programs/_testembed.c b/Programs/_testembed.c
index d149b6a0c5cd21..cc577f555715fa 100644
--- a/Programs/_testembed.c
+++ b/Programs/_testembed.c
@@ -8,6 +8,7 @@
 #include <Python.h>
 #include "pycore_initconfig.h"    // _PyConfig_InitCompatConfig()
 #include "pycore_runtime.h"       // _PyRuntime
+#include "pycore_pythread.h"      // PyThread_start_joinable_thread()
 #include "pycore_import.h"        // _PyImport_FrozenBootstrap
 #include <inttypes.h>
 #include <stdio.h>
@@ -93,6 +94,14 @@ static void _testembed_Py_Initialize(void)
 }
 
 
+static int test_import_in_subinterpreters(void)
+{
+    _testembed_Py_InitializeFromConfig();
+    PyThreadState_Swap(Py_NewInterpreter());
+    return PyRun_SimpleString("import readline"); // gh-124160
+}
+
+
 /*****************************************************
  * Test repeated initialisation and subinterpreters
  *****************************************************/
@@ -170,15 +179,23 @@ PyInit_embedded_ext(void)
 static int test_repeated_init_exec(void)
 {
     if (main_argc < 3) {
-        fprintf(stderr, "usage: %s test_repeated_init_exec CODE\n", PROGRAM);
+        fprintf(stderr,
+                "usage: %s test_repeated_init_exec CODE ...\n", PROGRAM);
         exit(1);
     }
     const char *code = main_argv[2];
+    int loops = main_argc > 3
+        ? main_argc - 2
+        : INIT_LOOPS;
 
-    for (int i=1; i <= INIT_LOOPS; i++) {
-        fprintf(stderr, "--- Loop #%d ---\n", i);
+    for (int i=0; i < loops; i++) {
+        fprintf(stderr, "--- Loop #%d ---\n", i+1);
         fflush(stderr);
 
+        if (main_argc > 3) {
+            code = main_argv[i+2];
+        }
+
         _testembed_Py_InitializeFromConfig();
         int err = PyRun_SimpleString(code);
         Py_Finalize();
@@ -293,14 +310,36 @@ static int test_pre_initialization_api(void)
     _Py_EMBED_PREINIT_CHECK("Checking Py_SetProgramName\n");
     Py_SetProgramName(program);
 
+    _Py_EMBED_PREINIT_CHECK("Checking !Py_IsInitialized pre-initialization\n");
+    if (Py_IsInitialized()) {
+        fprintf(stderr, "Fatal error: initialized before initialization!\n");
+        return 1;
+    }
+
     _Py_EMBED_PREINIT_CHECK("Initializing interpreter\n");
     Py_Initialize();
+
+    _Py_EMBED_PREINIT_CHECK("Checking Py_IsInitialized post-initialization\n");
+    if (!Py_IsInitialized()) {
+        fprintf(stderr, "Fatal error: not initialized after initialization!\n");
+        return 1;
+    }
+
     _Py_EMBED_PREINIT_CHECK("Check sys module contents\n");
-    PyRun_SimpleString("import sys; "
-                       "print('sys.executable:', sys.executable)");
+    PyRun_SimpleString(
+        "import sys; "
+        "print('sys.executable:', sys.executable); "
+        "sys.stdout.flush(); "
+    );
     _Py_EMBED_PREINIT_CHECK("Finalizing interpreter\n");
     Py_Finalize();
 
+    _Py_EMBED_PREINIT_CHECK("Checking !Py_IsInitialized post-finalization\n");
+    if (Py_IsInitialized()) {
+        fprintf(stderr, "Fatal error: still initialized after finalization!\n");
+        return 1;
+    }
+
     _Py_EMBED_PREINIT_CHECK("Freeing memory allocated by Py_DecodeLocale\n");
     PyMem_RawFree(program);
     return 0;
@@ -346,12 +385,15 @@ static int test_pre_initialization_sys_options(void)
     _Py_EMBED_PREINIT_CHECK("Initializing interpreter\n");
     _testembed_Py_InitializeFromConfig();
     _Py_EMBED_PREINIT_CHECK("Check sys module contents\n");
-    PyRun_SimpleString("import sys; "
-                       "print('sys.warnoptions:', sys.warnoptions); "
-                       "print('sys._xoptions:', sys._xoptions); "
-                       "warnings = sys.modules['warnings']; "
-                       "latest_filters = [f[0] for f in warnings.filters[:3]]; "
-                       "print('warnings.filters[:3]:', latest_filters)");
+    PyRun_SimpleString(
+        "import sys; "
+        "print('sys.warnoptions:', sys.warnoptions); "
+        "print('sys._xoptions:', sys._xoptions); "
+        "warnings = sys.modules['warnings']; "
+        "latest_filters = [f[0] for f in warnings.filters[:3]]; "
+        "print('warnings.filters[:3]:', latest_filters); "
+        "sys.stdout.flush(); "
+    );
     _Py_EMBED_PREINIT_CHECK("Finalizing interpreter\n");
     Py_Finalize();
 
@@ -2014,6 +2056,22 @@ static int test_init_main_interpreter_settings(void)
     return 0;
 }
 
+static void do_init(void *unused)
+{
+    _testembed_Py_Initialize();
+    Py_Finalize();
+}
+
+static int test_init_in_background_thread(void)
+{
+    PyThread_handle_t handle;
+    PyThread_ident_t ident;
+    if (PyThread_start_joinable_thread(&do_init, NULL, &ident, &handle) < 0) {
+        return -1;
+    }
+    return PyThread_join_thread(handle);
+}
+
 
 #ifndef MS_WINDOWS
 #include "test_frozenmain.h"      // M_test_frozenmain
@@ -2159,6 +2217,7 @@ static struct TestCase TestCases[] = {
     {"test_repeated_init_exec", test_repeated_init_exec},
     {"test_repeated_simple_init", test_repeated_simple_init},
     {"test_forced_io_encoding", test_forced_io_encoding},
+    {"test_import_in_subinterpreters", test_import_in_subinterpreters},
     {"test_repeated_init_and_subinterpreters", test_repeated_init_and_subinterpreters},
     {"test_repeated_init_and_inittab", test_repeated_init_and_inittab},
     {"test_pre_initialization_api", test_pre_initialization_api},
@@ -2203,6 +2262,7 @@ static struct TestCase TestCases[] = {
     {"test_get_argc_argv", test_get_argc_argv},
     {"test_init_use_frozen_modules", test_init_use_frozen_modules},
     {"test_init_main_interpreter_settings", test_init_main_interpreter_settings},
+    {"test_init_in_background_thread", test_init_in_background_thread},
 
     // Audit
     {"test_open_code_hook", test_open_code_hook},
diff --git a/Programs/test_frozenmain.h b/Programs/test_frozenmain.h
index 3e7ab7bffb158e..00c4e37963bf6f 100644
--- a/Programs/test_frozenmain.h
+++ b/Programs/test_frozenmain.h
@@ -27,12 +27,11 @@ unsigned char M_test_frozenmain[] = {
     3,0,0,0,218,3,107,101,121,169,0,243,0,0,0,0,
     218,18,116,101,115,116,95,102,114,111,122,101,110,109,97,105,
     110,46,112,121,218,8,60,109,111,100,117,108,101,62,114,18,
-    0,0,0,1,0,0,0,115,99,0,0,0,240,3,1,1,
+    0,0,0,1,0,0,0,115,94,0,0,0,240,3,1,1,
     1,243,8,0,1,11,219,0,24,225,0,5,208,6,26,212,
     0,27,217,0,5,128,106,144,35,151,40,145,40,212,0,27,
     216,9,26,215,9,38,210,9,38,211,9,40,168,24,209,9,
-    50,128,6,240,2,6,12,2,242,0,7,1,42,128,67,241,
-    14,0,5,10,136,71,144,67,144,53,152,2,152,54,160,35,
-    153,59,152,45,208,10,40,214,4,41,242,15,7,1,42,114,
-    16,0,0,0,
+    50,128,6,243,2,6,12,2,128,67,241,14,0,5,10,136,
+    71,144,67,144,53,152,2,152,54,160,35,153,59,152,45,208,
+    10,40,214,4,41,242,15,6,12,2,114,16,0,0,0,
 };
diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index 4956d04f719de9..08ac2507d984d2 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -279,8 +279,6 @@ void _PyAST_Fini(PyInterpreterState *interp)
     Py_CLEAR(state->vararg);
     Py_CLEAR(state->withitem_type);
 
-    Py_CLEAR(_Py_INTERP_CACHED_OBJECT(interp, str_replace_inf));
-
     state->finalized = 1;
     state->once = (_PyOnceFlag){0};
 }
@@ -5079,20 +5077,18 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
 
     Py_ssize_t i, numfields = 0;
     int res = -1;
-    PyObject *key, *value, *fields, *remaining_fields = NULL;
-    if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
+    PyObject *key, *value, *fields, *attributes = NULL, *remaining_fields = NULL;
+
+    fields = PyObject_GetAttr((PyObject*)Py_TYPE(self), state->_fields);
+    if (fields == NULL) {
         goto cleanup;
     }
-    if (fields) {
-        numfields = PySequence_Size(fields);
-        if (numfields == -1) {
-            goto cleanup;
-        }
-        remaining_fields = PySet_New(fields);
-    }
-    else {
-        remaining_fields = PySet_New(NULL);
+
+    numfields = PySequence_Size(fields);
+    if (numfields == -1) {
+        goto cleanup;
     }
+    remaining_fields = PySet_New(fields);
     if (remaining_fields == NULL) {
         goto cleanup;
     }
@@ -5146,22 +5142,32 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
                     goto cleanup;
                 }
             }
-            else if (
-                PyUnicode_CompareWithASCIIString(key, "lineno") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "col_offset") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "end_lineno") != 0 &&
-                PyUnicode_CompareWithASCIIString(key, "end_col_offset") != 0
-            ) {
-                if (PyErr_WarnFormat(
-                    PyExc_DeprecationWarning, 1,
-                    "%.400s.__init__ got an unexpected keyword argument '%U'. "
-                    "Support for arbitrary keyword arguments is deprecated "
-                    "and will be removed in Python 3.15.",
-                    Py_TYPE(self)->tp_name, key
-                ) < 0) {
+            else {
+                // Lazily initialize "attributes"
+                if (attributes == NULL) {
+                    attributes = PyObject_GetAttr((PyObject*)Py_TYPE(self), state->_attributes);
+                    if (attributes == NULL) {
+                        res = -1;
+                        goto cleanup;
+                    }
+                }
+                int contains = PySequence_Contains(attributes, key);
+                if (contains == -1) {
                     res = -1;
                     goto cleanup;
                 }
+                else if (contains == 0) {
+                    if (PyErr_WarnFormat(
+                        PyExc_DeprecationWarning, 1,
+                        "%.400s.__init__ got an unexpected keyword argument '%U'. "
+                        "Support for arbitrary keyword arguments is deprecated "
+                        "and will be removed in Python 3.15.",
+                        Py_TYPE(self)->tp_name, key
+                    ) < 0) {
+                        res = -1;
+                        goto cleanup;
+                    }
+                }
             }
             res = PyObject_SetAttr(self, key, value);
             if (res < 0) {
@@ -5221,6 +5227,13 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
                     goto set_remaining_cleanup;
                 }
             }
+            else if (type == state->expr_context_type) {
+                // special case for expr_context: default to Load()
+                res = PyObject_SetAttr(self, name, state->Load_singleton);
+                if (res < 0) {
+                    goto set_remaining_cleanup;
+                }
+            }
             else {
                 // simple field (e.g., identifier)
                 if (PyErr_WarnFormat(
@@ -5237,6 +5250,7 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
         Py_DECREF(field_types);
     }
   cleanup:
+    Py_XDECREF(attributes);
     Py_XDECREF(fields);
     Py_XDECREF(remaining_fields);
     return res;
@@ -5256,17 +5270,22 @@ ast_type_reduce(PyObject *self, PyObject *unused)
         return NULL;
     }
 
-    PyObject *dict = NULL, *fields = NULL, *remaining_fields = NULL,
-             *remaining_dict = NULL, *positional_args = NULL;
+    PyObject *dict = NULL, *fields = NULL, *positional_args = NULL;
     if (PyObject_GetOptionalAttr(self, state->__dict__, &dict) < 0) {
         return NULL;
     }
     PyObject *result = NULL;
     if (dict) {
-        // Serialize the fields as positional args if possible, because if we
-        // serialize them as a dict, during unpickling they are set only *after*
-        // the object is constructed, which will now trigger a DeprecationWarning
-        // if the AST type has required fields.
+        // Unpickling (or copying) works as follows:
+        // - Construct the object with only positional arguments
+        // - Set the fields from the dict
+        // We have two constraints:
+        // - We must set all the required fields in the initial constructor call,
+        //   or the unpickling or deepcopying of the object will trigger DeprecationWarnings.
+        // - We must not include child nodes in the positional args, because
+        //   that may trigger runaway recursion during copying (gh-120108).
+        // To satisfy both constraints, we set all the fields to None in the
+        // initial list of positional args, and then set the fields from the dict.
         if (PyObject_GetOptionalAttr((PyObject*)Py_TYPE(self), state->_fields, &fields) < 0) {
             goto cleanup;
         }
@@ -5276,11 +5295,6 @@ ast_type_reduce(PyObject *self, PyObject *unused)
                 Py_DECREF(dict);
                 goto cleanup;
             }
-            remaining_dict = PyDict_Copy(dict);
-            Py_DECREF(dict);
-            if (!remaining_dict) {
-                goto cleanup;
-            }
             positional_args = PyList_New(0);
             if (!positional_args) {
                 goto cleanup;
@@ -5291,7 +5305,7 @@ ast_type_reduce(PyObject *self, PyObject *unused)
                     goto cleanup;
                 }
                 PyObject *value;
-                int rc = PyDict_Pop(remaining_dict, name, &value);
+                int rc = PyDict_GetItemRef(dict, name, &value);
                 Py_DECREF(name);
                 if (rc < 0) {
                     goto cleanup;
@@ -5299,7 +5313,7 @@ ast_type_reduce(PyObject *self, PyObject *unused)
                 if (!value) {
                     break;
                 }
-                rc = PyList_Append(positional_args, value);
+                rc = PyList_Append(positional_args, Py_None);
                 Py_DECREF(value);
                 if (rc < 0) {
                     goto cleanup;
@@ -5309,8 +5323,7 @@ ast_type_reduce(PyObject *self, PyObject *unused)
             if (!args_tuple) {
                 goto cleanup;
             }
-            result = Py_BuildValue("ONO", Py_TYPE(self), args_tuple,
-                                   remaining_dict);
+            result = Py_BuildValue("ONN", Py_TYPE(self), args_tuple, dict);
         }
         else {
             result = Py_BuildValue("O()N", Py_TYPE(self), dict);
@@ -5321,8 +5334,6 @@ ast_type_reduce(PyObject *self, PyObject *unused)
     }
 cleanup:
     Py_XDECREF(fields);
-    Py_XDECREF(remaining_fields);
-    Py_XDECREF(remaining_dict);
     Py_XDECREF(positional_args);
     return result;
 }
diff --git a/Python/Python-tokenize.c b/Python/Python-tokenize.c
index 41e8107e205b46..34b4445be27f62 100644
--- a/Python/Python-tokenize.c
+++ b/Python/Python-tokenize.c
@@ -1,9 +1,10 @@
 #include "Python.h"
 #include "errcode.h"
+#include "internal/pycore_critical_section.h"   // Py_BEGIN_CRITICAL_SECTION
 #include "../Parser/lexer/state.h"
 #include "../Parser/lexer/lexer.h"
 #include "../Parser/tokenizer/tokenizer.h"
-#include "../Parser/pegen.h"      // _PyPegen_byte_offset_to_character_offset()
+#include "../Parser/pegen.h"                    // _PyPegen_byte_offset_to_character_offset()
 
 static struct PyModuleDef _tokenizemodule;
 
@@ -32,6 +33,12 @@ typedef struct
 {
     PyObject_HEAD struct tok_state *tok;
     int done;
+
+    /* Needed to cache line for performance */
+    PyObject *last_line;
+    Py_ssize_t last_lineno;
+    Py_ssize_t last_end_lineno;
+    Py_ssize_t byte_col_offset_diff;
 } tokenizeriterobject;
 
 /*[clinic input]
@@ -68,18 +75,26 @@ tokenizeriter_new_impl(PyTypeObject *type, PyObject *readline,
         self->tok->tok_extra_tokens = 1;
     }
     self->done = 0;
+
+    self->last_line = NULL;
+    self->byte_col_offset_diff = 0;
+    self->last_lineno = 0;
+    self->last_end_lineno = 0;
+
     return (PyObject *)self;
 }
 
 static int
-_tokenizer_error(struct tok_state *tok)
+_tokenizer_error(tokenizeriterobject *it)
 {
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);
     if (PyErr_Occurred()) {
         return -1;
     }
 
     const char *msg = NULL;
     PyObject* errtype = PyExc_SyntaxError;
+    struct tok_state *tok = it->tok;
     switch (tok->done) {
         case E_TOKEN:
             msg = "invalid token";
@@ -165,17 +180,78 @@ _tokenizer_error(struct tok_state *tok)
     return result;
 }
 
+static PyObject *
+_get_current_line(tokenizeriterobject *it, const char *line_start, Py_ssize_t size,
+                  int *line_changed)
+{
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);
+    PyObject *line;
+    if (it->tok->lineno != it->last_lineno) {
+        // Line has changed since last token, so we fetch the new line and cache it
+        // in the iter object.
+        Py_XDECREF(it->last_line);
+        line = PyUnicode_DecodeUTF8(line_start, size, "replace");
+        it->last_line = line;
+        it->byte_col_offset_diff = 0;
+    }
+    else {
+        line = it->last_line;
+        *line_changed = 0;
+    }
+    return line;
+}
+
+static void
+_get_col_offsets(tokenizeriterobject *it, struct token token, const char *line_start,
+                 PyObject *line, int line_changed, Py_ssize_t lineno, Py_ssize_t end_lineno,
+                 Py_ssize_t *col_offset, Py_ssize_t *end_col_offset)
+{
+    _Py_CRITICAL_SECTION_ASSERT_OBJECT_LOCKED(it);
+    Py_ssize_t byte_offset = -1;
+    if (token.start != NULL && token.start >= line_start) {
+        byte_offset = token.start - line_start;
+        if (line_changed) {
+            *col_offset = _PyPegen_byte_offset_to_character_offset_line(line, 0, byte_offset);
+            it->byte_col_offset_diff = byte_offset - *col_offset;
+        }
+        else {
+            *col_offset = byte_offset - it->byte_col_offset_diff;
+        }
+    }
+
+    if (token.end != NULL && token.end >= it->tok->line_start) {
+        Py_ssize_t end_byte_offset = token.end - it->tok->line_start;
+        if (lineno == end_lineno) {
+            // If the whole token is at the same line, we can just use the token.start
+            // buffer for figuring out the new column offset, since using line is not
+            // performant for very long lines.
+            Py_ssize_t token_col_offset = _PyPegen_byte_offset_to_character_offset_line(line, byte_offset, end_byte_offset);
+            *end_col_offset = *col_offset + token_col_offset;
+            it->byte_col_offset_diff += token.end - token.start - token_col_offset;
+        }
+        else {
+            *end_col_offset = _PyPegen_byte_offset_to_character_offset_raw(it->tok->line_start, end_byte_offset);
+            it->byte_col_offset_diff += end_byte_offset - *end_col_offset;
+        }
+    }
+    it->last_lineno = lineno;
+    it->last_end_lineno = end_lineno;
+}
+
 static PyObject *
 tokenizeriter_next(tokenizeriterobject *it)
 {
     PyObject* result = NULL;
+
+    Py_BEGIN_CRITICAL_SECTION(it);
+
     struct token token;
     _PyToken_Init(&token);
 
     int type = _PyTokenizer_Get(it->tok, &token);
     if (type == ERRORTOKEN) {
         if(!PyErr_Occurred()) {
-            _tokenizer_error(it->tok);
+            _tokenizer_error(it);
             assert(PyErr_Occurred());
         }
         goto exit;
@@ -203,6 +279,7 @@ tokenizeriter_next(tokenizeriterobject *it)
 
     const char *line_start = ISSTRINGLIT(type) ? it->tok->multi_line_start : it->tok->line_start;
     PyObject* line = NULL;
+    int line_changed = 1;
     if (it->tok->tok_extra_tokens && is_trailing_token) {
         line = PyUnicode_FromString("");
     } else {
@@ -210,7 +287,8 @@ tokenizeriter_next(tokenizeriterobject *it)
         if (size >= 1 && it->tok->implicit_newline) {
             size -= 1;
         }
-        line = PyUnicode_DecodeUTF8(line_start, size, "replace");
+
+        line = _get_current_line(it, line_start, size, &line_changed);
     }
     if (line == NULL) {
         Py_DECREF(str);
@@ -221,12 +299,8 @@ tokenizeriter_next(tokenizeriterobject *it)
     Py_ssize_t end_lineno = it->tok->lineno;
     Py_ssize_t col_offset = -1;
     Py_ssize_t end_col_offset = -1;
-    if (token.start != NULL && token.start >= line_start) {
-        col_offset = _PyPegen_byte_offset_to_character_offset(line, token.start - line_start);
-    }
-    if (token.end != NULL && token.end >= it->tok->line_start) {
-        end_col_offset = _PyPegen_byte_offset_to_character_offset_raw(it->tok->line_start, token.end - it->tok->line_start);
-    }
+    _get_col_offsets(it, token, line_start, line, line_changed,
+                     lineno, end_lineno, &col_offset, &end_col_offset);
 
     if (it->tok->tok_extra_tokens) {
         if (is_trailing_token) {
@@ -262,12 +336,14 @@ tokenizeriter_next(tokenizeriterobject *it)
         }
     }
 
-    result = Py_BuildValue("(iN(nn)(nn)N)", type, str, lineno, col_offset, end_lineno, end_col_offset, line);
+    result = Py_BuildValue("(iN(nn)(nn)O)", type, str, lineno, col_offset, end_lineno, end_col_offset, line);
 exit:
     _PyToken_Free(&token);
     if (type == ENDMARKER) {
         it->done = 1;
     }
+
+    Py_END_CRITICAL_SECTION();
     return result;
 }
 
@@ -275,6 +351,7 @@ static void
 tokenizeriter_dealloc(tokenizeriterobject *it)
 {
     PyTypeObject *tp = Py_TYPE(it);
+    Py_XDECREF(it->last_line);
     _PyTokenizer_Free(it->tok);
     tp->tp_free(it);
     Py_DECREF(tp);
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 793cbc657f3184..17404d33c1cc9b 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -569,10 +569,9 @@ call_show_warning(PyThreadState *tstate, PyObject *category,
     PyObject *show_fn, *msg, *res, *warnmsg_cls = NULL;
     PyInterpreterState *interp = tstate->interp;
 
-    /* If the source parameter is set, try to get the Python implementation.
-       The Python implementation is able to log the traceback where the source
+    /* The Python implementation is able to log the traceback where the source
        was allocated, whereas the C implementation doesn't. */
-    show_fn = GET_WARNINGS_ATTR(interp, _showwarnmsg, source != NULL);
+    show_fn = GET_WARNINGS_ATTR(interp, _showwarnmsg, 1);
     if (show_fn == NULL) {
         if (PyErr_Occurred())
             return -1;
diff --git a/Python/asm_trampoline.S b/Python/asm_trampoline.S
index 460707717df003..0a3265dfeee204 100644
--- a/Python/asm_trampoline.S
+++ b/Python/asm_trampoline.S
@@ -22,6 +22,14 @@ _Py_trampoline_func_start:
     blr     x3
     ldp     x29, x30, [sp], 16
     ret
+#endif
+#ifdef __riscv
+    addi    sp,sp,-16
+    sd      ra,8(sp)
+    jalr    a3
+    ld      ra,8(sp)
+    addi    sp,sp,16
+    jr      ra
 #endif
     .globl	_Py_trampoline_func_end
 _Py_trampoline_func_end:
diff --git a/Python/ast_opt.c b/Python/ast_opt.c
index 41e906c66e8eec..fa6bc70d748d60 100644
--- a/Python/ast_opt.c
+++ b/Python/ast_opt.c
@@ -273,10 +273,9 @@ parse_literal(PyObject *fmt, Py_ssize_t *ppos, PyArena *arena)
     PyObject *str = PyUnicode_Substring(fmt, start, pos);
     /* str = str.replace('%%', '%') */
     if (str && has_percents) {
-        _Py_DECLARE_STR(percent, "%");
         _Py_DECLARE_STR(dbl_percent, "%%");
         Py_SETREF(str, PyUnicode_Replace(str, &_Py_STR(dbl_percent),
-                                         &_Py_STR(percent), -1));
+                                         _Py_LATIN1_CHR('%'), -1));
     }
     if (!str) {
         return NULL;
@@ -1087,10 +1086,13 @@ astfold_type_param(type_param_ty node_, PyArena *ctx_, _PyASTOptimizeState *stat
     switch (node_->kind) {
         case TypeVar_kind:
             CALL_OPT(astfold_expr, expr_ty, node_->v.TypeVar.bound);
+            CALL_OPT(astfold_expr, expr_ty, node_->v.TypeVar.default_value);
             break;
         case ParamSpec_kind:
+            CALL_OPT(astfold_expr, expr_ty, node_->v.ParamSpec.default_value);
             break;
         case TypeVarTuple_kind:
+            CALL_OPT(astfold_expr, expr_ty, node_->v.TypeVarTuple.default_value);
             break;
     }
     return 1;
diff --git a/Python/ast_unparse.c b/Python/ast_unparse.c
index 8aff045101cc72..0d196dc482f954 100644
--- a/Python/ast_unparse.c
+++ b/Python/ast_unparse.c
@@ -2,7 +2,6 @@
 #include "pycore_ast.h"           // expr_ty
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_runtime.h"       // _Py_ID()
-#include <float.h>                // DBL_MAX_10_EXP
 #include <stdbool.h>
 
 /* This limited unparser is used to convert annotations back to strings
@@ -10,15 +9,9 @@
  * See ast.unparse for a full unparser (written in Python)
  */
 
-_Py_DECLARE_STR(open_br, "{");
 _Py_DECLARE_STR(dbl_open_br, "{{");
-_Py_DECLARE_STR(close_br, "}");
 _Py_DECLARE_STR(dbl_close_br, "}}");
 
-/* We would statically initialize this if doing so were simple enough. */
-#define _str_replace_inf(interp) \
-    _Py_INTERP_CACHED_OBJECT(interp, str_replace_inf)
-
 /* Forward declarations for recursion via helper functions. */
 static PyObject *
 expr_as_unicode(expr_ty e, int level);
@@ -80,13 +73,13 @@ append_repr(_PyUnicodeWriter *writer, PyObject *obj)
     }
 
     if ((PyFloat_CheckExact(obj) && Py_IS_INFINITY(PyFloat_AS_DOUBLE(obj))) ||
-       PyComplex_CheckExact(obj))
+        PyComplex_CheckExact(obj))
     {
-        PyInterpreterState *interp = _PyInterpreterState_GET();
+        _Py_DECLARE_STR(str_replace_inf, "1e309");  // evaluates to inf
         PyObject *new_repr = PyUnicode_Replace(
             repr,
             &_Py_ID(inf),
-            _str_replace_inf(interp),
+            &_Py_STR(str_replace_inf),
             -1
         );
         Py_DECREF(repr);
@@ -580,11 +573,13 @@ escape_braces(PyObject *orig)
 {
     PyObject *temp;
     PyObject *result;
-    temp = PyUnicode_Replace(orig, &_Py_STR(open_br), &_Py_STR(dbl_open_br), -1);
+    temp = PyUnicode_Replace(orig, _Py_LATIN1_CHR('{'),
+                             &_Py_STR(dbl_open_br), -1);
     if (!temp) {
         return NULL;
     }
-    result = PyUnicode_Replace(temp, &_Py_STR(close_br), &_Py_STR(dbl_close_br), -1);
+    result = PyUnicode_Replace(temp, _Py_LATIN1_CHR('}'),
+                               &_Py_STR(dbl_close_br), -1);
     Py_DECREF(temp);
     return result;
 }
@@ -678,7 +673,7 @@ append_formattedvalue(_PyUnicodeWriter *writer, expr_ty e)
     if (!temp_fv_str) {
         return -1;
     }
-    if (PyUnicode_Find(temp_fv_str, &_Py_STR(open_br), 0, 1, 1) == 0) {
+    if (PyUnicode_Find(temp_fv_str, _Py_LATIN1_CHR('{'), 0, 1, 1) == 0) {
         /* Expression starts with a brace, split it with a space from the outer
            one. */
         outer_brace = "{ ";
@@ -918,20 +913,6 @@ append_ast_expr(_PyUnicodeWriter *writer, expr_ty e, int level)
     return -1;
 }
 
-static int
-maybe_init_static_strings(void)
-{
-    PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (_str_replace_inf(interp) == NULL) {
-        PyObject *tmp = PyUnicode_FromFormat("1e%d", 1 + DBL_MAX_10_EXP);
-        if (tmp == NULL) {
-            return -1;
-        }
-        _str_replace_inf(interp) = tmp;
-    }
-    return 0;
-}
-
 static PyObject *
 expr_as_unicode(expr_ty e, int level)
 {
@@ -939,9 +920,7 @@ expr_as_unicode(expr_ty e, int level)
     _PyUnicodeWriter_Init(&writer);
     writer.min_length = 256;
     writer.overallocate = 1;
-    if (-1 == maybe_init_static_strings() ||
-        -1 == append_ast_expr(&writer, e, level))
-    {
+    if (-1 == append_ast_expr(&writer, e, level)) {
         _PyUnicodeWriter_Dealloc(&writer);
         return NULL;
     }
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index d192d5be751cfc..5afa94cf2217d7 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -870,15 +870,15 @@ builtin_compile_impl(PyObject *module, PyObject *source, PyObject *filename,
     // gh-118527: Disable immortalization of code constants for explicit
     // compile() calls to get consistent frozen outputs between the default
     // and free-threaded builds.
+    // Subtract two to suppress immortalization (so that 1 -> -1)
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    int old_value = interp->gc.immortalize.enable_on_thread_created;
-    interp->gc.immortalize.enable_on_thread_created = 0;
+    _Py_atomic_add_int(&interp->gc.immortalize, -2);
 #endif
 
     result = Py_CompileStringObject(str, filename, start[compile_mode], &cf, optimize);
 
 #ifdef Py_GIL_DISABLED
-    interp->gc.immortalize.enable_on_thread_created = old_value;
+    _Py_atomic_add_int(&interp->gc.immortalize, 2);
 #endif
 
     Py_XDECREF(source_copy);
@@ -1475,7 +1475,7 @@ static PyMethodDef map_methods[] = {
 
 
 PyDoc_STRVAR(map_doc,
-"map(function, /, *iterables)\n\
+"map(function, iterable, /, *iterables)\n\
 --\n\
 \n\
 Make an iterator that computes the function using arguments from\n\
@@ -2601,8 +2601,8 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
                     b = PyLong_AsLongAndOverflow(item, &overflow);
                 }
                 if (overflow == 0 &&
-                    (i_result >= 0 ? (b <= LONG_MAX - i_result)
-                                   : (b >= LONG_MIN - i_result)))
+                    (i_result >= 0 ? (b <= PY_SSIZE_T_MAX - i_result)
+                                   : (b >= PY_SSIZE_T_MIN - i_result)))
                 {
                     i_result += b;
                     Py_DECREF(item);
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
index 55eda9711dea1f..1e6185d3c9e489 100644
--- a/Python/bytecodes.c
+++ b/Python/bytecodes.c
@@ -292,11 +292,9 @@ dummy_func(
             /* Need to create a fake StopIteration error here,
              * to conform to PEP 380 */
             if (PyGen_Check(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                if (monitor_stop_iteration(tstate, frame, this_instr, value)) {
                     ERROR_NO_POP();
                 }
-                PyErr_SetRaisedException(NULL);
             }
             DECREF_INPUTS();
         }
@@ -307,11 +305,9 @@ dummy_func(
 
         tier1 inst(INSTRUMENTED_END_SEND, (receiver, value -- value)) {
             if (PyGen_Check(receiver) || PyCoro_CheckExact(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                if (monitor_stop_iteration(tstate, frame, this_instr, value)) {
                     ERROR_NO_POP();
                 }
-                PyErr_SetRaisedException(NULL);
             }
             Py_DECREF(receiver);
         }
@@ -366,7 +362,7 @@ dummy_func(
             EXIT_IF(!PyLong_CheckExact(value));
             STAT_INC(TO_BOOL, hit);
             if (_PyLong_IsZero((PyLongObject *)value)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
@@ -393,7 +389,7 @@ dummy_func(
             EXIT_IF(!PyUnicode_CheckExact(value));
             STAT_INC(TO_BOOL, hit);
             if (value == &_Py_STR(empty)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
@@ -1041,7 +1037,7 @@ dummy_func(
             if (retval == NULL) {
                 if (_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)
                 ) {
-                    monitor_raise(tstate, frame, this_instr);
+                    _PyEval_MonitorRaise(tstate, frame, this_instr);
                 }
                 if (_PyGen_FetchStopIterationValue(&retval) == 0) {
                     assert(retval != NULL);
@@ -1379,18 +1375,35 @@ dummy_func(
                 ERROR_NO_POP();
             }
             if (v == NULL) {
-                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
-                    ERROR_NO_POP();
-                }
-                if (v == NULL) {
-                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                if (PyDict_CheckExact(GLOBALS())
+                    && PyDict_CheckExact(BUILTINS()))
+                {
+                    v = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
+                                            (PyDictObject *)BUILTINS(),
+                                            name);
+                    if (v == NULL) {
+                        if (!_PyErr_Occurred(tstate)) {
+                            /* _PyDict_LoadGlobal() returns NULL without raising
+                            * an exception if the key doesn't exist */
+                            _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                                    NAME_ERROR_MSG, name);
+                        }
                         ERROR_NO_POP();
                     }
+                }
+                else {
+                    /* Slow-path if globals or builtins is not a dict */
+                    /* namespace 1: globals */
+                    ERROR_IF(PyMapping_GetOptionalItem(GLOBALS(), name, &v) < 0, error);
                     if (v == NULL) {
-                        _PyEval_FormatExcCheckArg(
-                                    tstate, PyExc_NameError,
-                                    NAME_ERROR_MSG, name);
-                        ERROR_NO_POP();
+                        /* namespace 2: builtins */
+                        ERROR_IF(PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0, error);
+                        if (v == NULL) {
+                            _PyEval_FormatExcCheckArg(
+                                        tstate, PyExc_NameError,
+                                        NAME_ERROR_MSG, name);
+                            ERROR_IF(true, error);
+                        }
                     }
                 }
             }
@@ -1547,7 +1560,7 @@ dummy_func(
 
         inst(MAKE_CELL, (--)) {
             // "initial" is probably NULL but not if it's an arg (or set
-            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
+            // via the f_locals proxy before MAKE_CELL has run).
             PyObject *initial = GETLOCAL(oparg);
             PyObject *cell = PyCell_New(initial);
             if (cell == NULL) {
@@ -2157,14 +2170,15 @@ dummy_func(
                 new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
                 ep->me_value = value;
             }
-            Py_DECREF(old_value);
-            STAT_INC(STORE_ATTR, hit);
             /* Ensure dict is GC tracked if it needs to be */
             if (!_PyObject_GC_IS_TRACKED(dict) && _PyObject_GC_MAY_BE_TRACKED(value)) {
                 _PyObject_GC_TRACK(dict);
             }
-            /* PEP 509 */
-            dict->ma_version_tag = new_version;
+            dict->ma_version_tag = new_version; // PEP 509
+            // old_value should be DECREFed after GC track checking is done, if not, it could raise a segmentation fault,
+            // when dict only holds the strong reference to value in ep->me_value.
+            Py_DECREF(old_value);
+            STAT_INC(STORE_ATTR, hit);
             Py_DECREF(owner);
         }
 
@@ -2590,7 +2604,7 @@ dummy_func(
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                         ERROR_NO_POP();
                     }
-                    monitor_raise(tstate, frame, this_instr);
+                    _PyEval_MonitorRaise(tstate, frame, this_instr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
@@ -2613,6 +2627,7 @@ dummy_func(
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                         ERROR_NO_POP();
                     }
+                    _PyEval_MonitorRaise(tstate, frame, frame->instr_ptr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
@@ -2637,7 +2652,7 @@ dummy_func(
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                         ERROR_NO_POP();
                     }
-                    monitor_raise(tstate, frame, this_instr);
+                    _PyEval_MonitorRaise(tstate, frame, this_instr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
@@ -2682,7 +2697,10 @@ dummy_func(
             assert(Py_TYPE(iter) == &PyListIter_Type);
             PyListObject *seq = it->it_seq;
             EXIT_IF(seq == NULL);
-            EXIT_IF((size_t)it->it_index >= (size_t)PyList_GET_SIZE(seq));
+            if ((size_t)it->it_index >= (size_t)PyList_GET_SIZE(seq)) {
+                it->it_index = -1;
+                EXIT_IF(1);
+            }
         }
 
         op(_ITER_NEXT_LIST, (iter -- iter, next)) {
@@ -3390,6 +3408,8 @@ dummy_func(
             PyFunctionObject *init = (PyFunctionObject *)cls->_spec_cache.init;
             PyCodeObject *code = (PyCodeObject *)init->func_code;
             DEOPT_IF(code->co_argcount != oparg+1);
+            DEOPT_IF((code->co_flags & (CO_VARKEYWORDS | CO_VARARGS | CO_OPTIMIZED)) != CO_OPTIMIZED);
+            DEOPT_IF(code->co_kwonlyargcount);
             DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize + _Py_InitCleanup.co_framesize));
             STAT_INC(CALL, hit);
             PyObject *self = _PyType_NewManagedObject(tp);
@@ -4302,8 +4322,6 @@ dummy_func(
                 if (optimized <= 0) {
                     exit->temperature = restart_backoff_counter(exit->temperature);
                     if (optimized < 0) {
-                        Py_DECREF(current_executor);
-                        tstate->previous_executor = Py_None;
                         GOTO_UNWIND();
                     }
                     GOTO_TIER_ONE(target);
diff --git a/Python/ceval.c b/Python/ceval.c
index 128e0417a9fd63..763c8688266f9d 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -27,6 +27,7 @@
 #include "pycore_setobject.h"     // _PySet_Update()
 #include "pycore_sliceobject.h"   // _PyBuildSlice_ConsumeRefs
 #include "pycore_sysmodule.h"     // _PySys_Audit()
+#include "pycore_traceback.h"     // _PyTraceBack_FromFrame
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "pycore_typeobject.h"    // _PySuper_Lookup()
 #include "pycore_uop_ids.h"       // Uops
@@ -95,6 +96,7 @@
         } \
         _Py_DECREF_STAT_INC(); \
         if (--op->ob_refcnt == 0) { \
+            _PyReftracerTrack(op, PyRefTracer_DESTROY); \
             destructor d = (destructor)(dealloc); \
             d(op); \
         } \
@@ -223,15 +225,13 @@ maybe_lltrace_resume_frame(_PyInterpreterFrame *frame, _PyInterpreterFrame *skip
 
 #endif
 
-static void monitor_raise(PyThreadState *tstate,
-                 _PyInterpreterFrame *frame,
-                 _Py_CODEUNIT *instr);
 static void monitor_reraise(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr);
 static int monitor_stop_iteration(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
-                 _Py_CODEUNIT *instr);
+                 _Py_CODEUNIT *instr,
+                 PyObject *value);
 static void monitor_unwind(PyThreadState *tstate,
                  _PyInterpreterFrame *frame,
                  _Py_CODEUNIT *instr);
@@ -266,12 +266,16 @@ void
 Py_SetRecursionLimit(int new_limit)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
+    _PyEval_StopTheWorld(interp);
+    HEAD_LOCK(interp->runtime);
     interp->ceval.recursion_limit = new_limit;
     for (PyThreadState *p = interp->threads.head; p != NULL; p = p->next) {
         int depth = p->py_recursion_limit - p->py_recursion_remaining;
         p->py_recursion_limit = new_limit;
         p->py_recursion_remaining = new_limit - depth;
     }
+    HEAD_UNLOCK(interp->runtime);
+    _PyEval_StartTheWorld(interp);
 }
 
 /* The function _Py_EnterRecursiveCallTstate() only calls _Py_CheckRecursiveCall()
@@ -675,15 +679,6 @@ extern void _PyUOpPrint(const _PyUOpInstruction *uop);
  * so consume 3 units of C stack */
 #define PY_EVAL_C_STACK_UNITS 2
 
-#if defined(_MSC_VER) && defined(_Py_USING_PGO)
-/* gh-111786: _PyEval_EvalFrameDefault is too large to optimize for speed with
-   PGO on MSVC. Disable that optimization temporarily. If this is fixed
-   upstream, we should gate this on the version of MSVC.
- */
-#  pragma optimize("t", off)
-/* This setting is reversed below following _PyEval_EvalFrameDefault */
-#endif
-
 PyObject* _Py_HOT_FUNCTION
 _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int throwflag)
 {
@@ -881,7 +876,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
                 PyTraceBack_Here(f);
             }
         }
-        monitor_raise(tstate, frame, next_instr-1);
+        _PyEval_MonitorRaise(tstate, frame, next_instr-1);
 exception_unwind:
         {
             /* We can't use frame->instr_ptr here, as RERAISE may have set it */
@@ -1124,7 +1119,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 #  pragma GCC diagnostic pop
 #elif defined(_MSC_VER) /* MS_WINDOWS */
 #  pragma warning(pop)
-#  pragma optimize("", on)
 #endif
 
 static void
@@ -2025,6 +2019,17 @@ _PyEval_ExceptionGroupMatch(PyObject* exc_value, PyObject *match_type,
             if (wrapped == NULL) {
                 return -1;
             }
+            PyThreadState *tstate = _PyThreadState_GET();
+            _PyInterpreterFrame *frame = _PyThreadState_GetFrame(tstate);
+            PyFrameObject *f = _PyFrame_GetFrameObject(frame);
+            if (f != NULL) {
+                PyObject *tb = _PyTraceBack_FromFrame(NULL, f);
+                if (tb == NULL) {
+                    return -1;
+                }
+                PyException_SetTraceback(wrapped, tb);
+                Py_DECREF(tb);
+            }
             *match = wrapped;
         }
         *rest = Py_NewRef(Py_None);
@@ -2040,8 +2045,25 @@ _PyEval_ExceptionGroupMatch(PyObject* exc_value, PyObject *match_type,
         if (pair == NULL) {
             return -1;
         }
-        assert(PyTuple_CheckExact(pair));
-        assert(PyTuple_GET_SIZE(pair) == 2);
+
+        if (!PyTuple_CheckExact(pair)) {
+            PyErr_Format(PyExc_TypeError,
+                         "%.200s.split must return a tuple, not %.200s",
+                         Py_TYPE(exc_value)->tp_name, Py_TYPE(pair)->tp_name);
+            Py_DECREF(pair);
+            return -1;
+        }
+
+        // allow tuples of length > 2 for backwards compatibility
+        if (PyTuple_GET_SIZE(pair) < 2) {
+            PyErr_Format(PyExc_TypeError,
+                         "%.200s.split must return a 2-tuple, "
+                         "got tuple of size %zd",
+                         Py_TYPE(exc_value)->tp_name, PyTuple_GET_SIZE(pair));
+            Py_DECREF(pair);
+            return -1;
+        }
+
         *match = Py_NewRef(PyTuple_GET_ITEM(pair, 0));
         *rest = Py_NewRef(PyTuple_GET_ITEM(pair, 1));
         Py_DECREF(pair);
@@ -2193,8 +2215,8 @@ no_tools_for_local_event(PyThreadState *tstate, _PyInterpreterFrame *frame, int
     }
 }
 
-static void
-monitor_raise(PyThreadState *tstate, _PyInterpreterFrame *frame,
+void
+_PyEval_MonitorRaise(PyThreadState *tstate, _PyInterpreterFrame *frame,
               _Py_CODEUNIT *instr)
 {
     if (no_tools_for_global_event(tstate, PY_MONITORING_EVENT_RAISE)) {
@@ -2215,12 +2237,19 @@ monitor_reraise(PyThreadState *tstate, _PyInterpreterFrame *frame,
 
 static int
 monitor_stop_iteration(PyThreadState *tstate, _PyInterpreterFrame *frame,
-                       _Py_CODEUNIT *instr)
+                       _Py_CODEUNIT *instr, PyObject *value)
 {
     if (no_tools_for_local_event(tstate, frame, PY_MONITORING_EVENT_STOP_ITERATION)) {
         return 0;
     }
-    return do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_STOP_ITERATION);
+    assert(!PyErr_Occurred());
+    PyErr_SetObject(PyExc_StopIteration, value);
+    int res = do_monitor_exc(tstate, frame, instr, PY_MONITORING_EVENT_STOP_ITERATION);
+    if (res < 0) {
+        return res;
+    }
+    PyErr_SetRaisedException(NULL);
+    return 0;
 }
 
 static void
@@ -2468,6 +2497,7 @@ _PyEval_GetBuiltinId(_Py_Identifier *name)
 PyObject *
 PyEval_GetLocals(void)
 {
+    // We need to return a borrowed reference here, so some tricks are needed
     PyThreadState *tstate = _PyThreadState_GET();
      _PyInterpreterFrame *current_frame = _PyThreadState_GetFrame(tstate);
     if (current_frame == NULL) {
@@ -2475,7 +2505,37 @@ PyEval_GetLocals(void)
         return NULL;
     }
 
-    PyObject *locals = _PyEval_GetFrameLocals();
+    // Be aware that this returns a new reference
+    PyObject *locals = _PyFrame_GetLocals(current_frame);
+
+    if (locals == NULL) {
+        return NULL;
+    }
+
+    if (PyFrameLocalsProxy_Check(locals)) {
+        PyFrameObject *f = _PyFrame_GetFrameObject(current_frame);
+        PyObject *ret = f->f_locals_cache;
+        if (ret == NULL) {
+            ret = PyDict_New();
+            if (ret == NULL) {
+                Py_DECREF(locals);
+                return NULL;
+            }
+            f->f_locals_cache = ret;
+        }
+        if (PyDict_Update(ret, locals) < 0) {
+            // At this point, if the cache dict is broken, it will stay broken, as
+            // trying to clean it up or replace it will just cause other problems
+            ret = NULL;
+        }
+        Py_DECREF(locals);
+        return ret;
+    }
+
+    assert(PyMapping_Check(locals));
+    assert(Py_REFCNT(locals) > 1);
+    Py_DECREF(locals);
+
     return locals;
 }
 
@@ -2682,7 +2742,7 @@ static PyObject *
 import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
 {
     PyObject *x;
-    PyObject *fullmodname, *pkgname, *pkgpath, *pkgname_or_unknown, *errmsg;
+    PyObject *fullmodname, *mod_name, *origin, *mod_name_or_unknown, *errmsg, *spec;
 
     if (PyObject_GetOptionalAttr(v, name, &x) != 0) {
         return x;
@@ -2690,16 +2750,16 @@ import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
     /* Issue #17636: in case this failed because of a circular relative
        import, try to fallback on reading the module directly from
        sys.modules. */
-    if (PyObject_GetOptionalAttr(v, &_Py_ID(__name__), &pkgname) < 0) {
+    if (PyObject_GetOptionalAttr(v, &_Py_ID(__name__), &mod_name) < 0) {
         return NULL;
     }
-    if (pkgname == NULL || !PyUnicode_Check(pkgname)) {
-        Py_CLEAR(pkgname);
+    if (mod_name == NULL || !PyUnicode_Check(mod_name)) {
+        Py_CLEAR(mod_name);
         goto error;
     }
-    fullmodname = PyUnicode_FromFormat("%U.%U", pkgname, name);
+    fullmodname = PyUnicode_FromFormat("%U.%U", mod_name, name);
     if (fullmodname == NULL) {
-        Py_DECREF(pkgname);
+        Py_DECREF(mod_name);
         return NULL;
     }
     x = PyImport_GetModule(fullmodname);
@@ -2707,63 +2767,137 @@ import_from(PyThreadState *tstate, PyObject *v, PyObject *name)
     if (x == NULL && !_PyErr_Occurred(tstate)) {
         goto error;
     }
-    Py_DECREF(pkgname);
+    Py_DECREF(mod_name);
     return x;
+
  error:
-    if (pkgname == NULL) {
-        pkgname_or_unknown = PyUnicode_FromString("<unknown module name>");
-        if (pkgname_or_unknown == NULL) {
+    if (mod_name == NULL) {
+        mod_name_or_unknown = PyUnicode_FromString("<unknown module name>");
+        if (mod_name_or_unknown == NULL) {
             return NULL;
         }
     } else {
-        pkgname_or_unknown = pkgname;
+        mod_name_or_unknown = mod_name;
+    }
+    // mod_name is no longer an owned reference
+    assert(mod_name_or_unknown);
+    assert(mod_name == NULL || mod_name == mod_name_or_unknown);
+
+    origin = NULL;
+    if (PyObject_GetOptionalAttr(v, &_Py_ID(__spec__), &spec) < 0) {
+        Py_DECREF(mod_name_or_unknown);
+        return NULL;
+    }
+    if (spec == NULL) {
+        errmsg = PyUnicode_FromFormat(
+            "cannot import name %R from %R (unknown location)",
+            name, mod_name_or_unknown
+        );
+        goto done_with_errmsg;
+    }
+    if (_PyModuleSpec_GetFileOrigin(spec, &origin) < 0) {
+        goto done;
     }
 
-    pkgpath = NULL;
-    if (PyModule_Check(v)) {
-        pkgpath = PyModule_GetFilenameObject(v);
-        if (pkgpath == NULL) {
+    int is_possibly_shadowing = _PyModule_IsPossiblyShadowing(origin);
+    if (is_possibly_shadowing < 0) {
+        goto done;
+    }
+    int is_possibly_shadowing_stdlib = 0;
+    if (is_possibly_shadowing) {
+        PyObject *stdlib_modules = PySys_GetObject("stdlib_module_names");
+        if (stdlib_modules && PyAnySet_Check(stdlib_modules)) {
+            is_possibly_shadowing_stdlib = PySet_Contains(stdlib_modules, mod_name_or_unknown);
+            if (is_possibly_shadowing_stdlib < 0) {
+                goto done;
+            }
+        }
+    }
+
+    if (origin == NULL && PyModule_Check(v)) {
+        // Fall back to __file__ for diagnostics if we don't have
+        // an origin that is a location
+        origin = PyModule_GetFilenameObject(v);
+        if (origin == NULL) {
             if (!PyErr_ExceptionMatches(PyExc_SystemError)) {
-                Py_DECREF(pkgname_or_unknown);
-                return NULL;
+                goto done;
             }
-            // module filename missing
+            // PyModule_GetFilenameObject raised "module filename missing"
             _PyErr_Clear(tstate);
         }
+        assert(origin == NULL || PyUnicode_Check(origin));
     }
-    if (pkgpath == NULL || !PyUnicode_Check(pkgpath)) {
-        Py_CLEAR(pkgpath);
+
+    if (is_possibly_shadowing_stdlib) {
+        assert(origin);
         errmsg = PyUnicode_FromFormat(
-            "cannot import name %R from %R (unknown location)",
-            name, pkgname_or_unknown
+            "cannot import name %R from %R "
+            "(consider renaming %R since it has the same "
+            "name as the standard library module named %R "
+            "and prevents importing that standard library module)",
+            name, mod_name_or_unknown, origin, mod_name_or_unknown
         );
     }
     else {
-        PyObject *spec;
-        int rc = PyObject_GetOptionalAttr(v, &_Py_ID(__spec__), &spec);
-        if (rc > 0) {
-            rc = _PyModuleSpec_IsInitializing(spec);
-            Py_DECREF(spec);
-        }
+        int rc = _PyModuleSpec_IsInitializing(spec);
         if (rc < 0) {
-            Py_DECREF(pkgname_or_unknown);
-            Py_DECREF(pkgpath);
-            return NULL;
+            goto done;
         }
-        const char *fmt =
-            rc ?
-            "cannot import name %R from partially initialized module %R "
-            "(most likely due to a circular import) (%S)" :
-            "cannot import name %R from %R (%S)";
+        else if (rc > 0) {
+            if (is_possibly_shadowing) {
+                assert(origin);
+                // For non-stdlib modules, only mention the possibility of
+                // shadowing if the module is being initialized.
+                errmsg = PyUnicode_FromFormat(
+                    "cannot import name %R from %R "
+                    "(consider renaming %R if it has the same name "
+                    "as a library you intended to import)",
+                    name, mod_name_or_unknown, origin
+                );
+            }
+            else if (origin) {
+                errmsg = PyUnicode_FromFormat(
+                    "cannot import name %R from partially initialized module %R "
+                    "(most likely due to a circular import) (%S)",
+                    name, mod_name_or_unknown, origin
+                );
+            }
+            else {
+                errmsg = PyUnicode_FromFormat(
+                    "cannot import name %R from partially initialized module %R "
+                    "(most likely due to a circular import)",
+                    name, mod_name_or_unknown
+                );
+            }
+        }
+        else {
+            assert(rc == 0);
+            if (origin) {
+                errmsg = PyUnicode_FromFormat(
+                    "cannot import name %R from %R (%S)",
+                    name, mod_name_or_unknown, origin
+                );
+            }
+            else {
+                errmsg = PyUnicode_FromFormat(
+                    "cannot import name %R from %R (unknown location)",
+                    name, mod_name_or_unknown
+                );
+            }
+        }
+    }
 
-        errmsg = PyUnicode_FromFormat(fmt, name, pkgname_or_unknown, pkgpath);
+done_with_errmsg:
+    if (errmsg != NULL) {
+        /* NULL checks for mod_name and origin done by _PyErr_SetImportErrorWithNameFrom */
+        _PyErr_SetImportErrorWithNameFrom(errmsg, mod_name, origin, name);
+        Py_DECREF(errmsg);
     }
-    /* NULL checks for errmsg and pkgname done by PyErr_SetImportError. */
-    _PyErr_SetImportErrorWithNameFrom(errmsg, pkgname, pkgpath, name);
 
-    Py_XDECREF(errmsg);
-    Py_DECREF(pkgname_or_unknown);
-    Py_XDECREF(pkgpath);
+done:
+    Py_XDECREF(origin);
+    Py_XDECREF(spec);
+    Py_DECREF(mod_name_or_unknown);
     return NULL;
 }
 
diff --git a/Python/ceval_gil.c b/Python/ceval_gil.c
index 7a54c185303cd1..0b45caba0d49ff 100644
--- a/Python/ceval_gil.c
+++ b/Python/ceval_gil.c
@@ -205,32 +205,39 @@ static void recreate_gil(struct _gil_runtime_state *gil)
 }
 #endif
 
-static void
-drop_gil_impl(struct _gil_runtime_state *gil)
+static inline void
+drop_gil_impl(PyThreadState *tstate, struct _gil_runtime_state *gil)
 {
     MUTEX_LOCK(gil->mutex);
     _Py_ANNOTATE_RWLOCK_RELEASED(&gil->locked, /*is_write=*/1);
     _Py_atomic_store_int_relaxed(&gil->locked, 0);
+    if (tstate != NULL) {
+        tstate->_status.holds_gil = 0;
+    }
     COND_SIGNAL(gil->cond);
     MUTEX_UNLOCK(gil->mutex);
 }
 
 static void
-drop_gil(PyInterpreterState *interp, PyThreadState *tstate)
+drop_gil(PyInterpreterState *interp, PyThreadState *tstate, int final_release)
 {
     struct _ceval_state *ceval = &interp->ceval;
-    /* If tstate is NULL, the caller is indicating that we're releasing
+    /* If final_release is true, the caller is indicating that we're releasing
        the GIL for the last time in this thread.  This is particularly
        relevant when the current thread state is finalizing or its
        interpreter is finalizing (either may be in an inconsistent
        state).  In that case the current thread will definitely
        never try to acquire the GIL again. */
     // XXX It may be more correct to check tstate->_status.finalizing.
-    // XXX assert(tstate == NULL || !tstate->_status.cleared);
+    // XXX assert(final_release || !tstate->_status.cleared);
 
+    assert(final_release || tstate != NULL);
     struct _gil_runtime_state *gil = ceval->gil;
 #ifdef Py_GIL_DISABLED
-    if (!_Py_atomic_load_int_relaxed(&gil->enabled)) {
+    // Check if we have the GIL before dropping it. tstate will be NULL if
+    // take_gil() detected that this thread has been destroyed, in which case
+    // we know we have the GIL.
+    if (tstate != NULL && !tstate->_status.holds_gil) {
         return;
     }
 #endif
@@ -238,26 +245,23 @@ drop_gil(PyInterpreterState *interp, PyThreadState *tstate)
         Py_FatalError("drop_gil: GIL is not locked");
     }
 
-    /* tstate is allowed to be NULL (early interpreter init) */
-    if (tstate != NULL) {
+    if (!final_release) {
         /* Sub-interpreter support: threads might have been switched
            under our feet using PyThreadState_Swap(). Fix the GIL last
            holder variable so that our heuristics work. */
         _Py_atomic_store_ptr_relaxed(&gil->last_holder, tstate);
     }
 
-    drop_gil_impl(gil);
+    drop_gil_impl(tstate, gil);
 
 #ifdef FORCE_SWITCHING
-    /* We check tstate first in case we might be releasing the GIL for
-       the last time in this thread.  In that case there's a possible
-       race with tstate->interp getting deleted after gil->mutex is
-       unlocked and before the following code runs, leading to a crash.
-       We can use (tstate == NULL) to indicate the thread is done with
-       the GIL, and that's the only time we might delete the
-       interpreter, so checking tstate first prevents the crash.
-       See https://github.com/python/cpython/issues/104341. */
-    if (tstate != NULL &&
+    /* We might be releasing the GIL for the last time in this thread.  In that
+       case there's a possible race with tstate->interp getting deleted after
+       gil->mutex is unlocked and before the following code runs, leading to a
+       crash.  We can use final_release to indicate the thread is done with the
+       GIL, and that's the only time we might delete the interpreter.  See
+       https://github.com/python/cpython/issues/104341. */
+    if (!final_release &&
         _Py_eval_breaker_bit_is_set(tstate, _PY_GIL_DROP_REQUEST_BIT)) {
         MUTEX_LOCK(gil->switch_mutex);
         /* Not switched yet => wait */
@@ -284,7 +288,7 @@ drop_gil(PyInterpreterState *interp, PyThreadState *tstate)
    tstate must be non-NULL.
 
    Returns 1 if the GIL was acquired, or 0 if not. */
-static int
+static void
 take_gil(PyThreadState *tstate)
 {
     int err = errno;
@@ -309,7 +313,7 @@ take_gil(PyThreadState *tstate)
     struct _gil_runtime_state *gil = interp->ceval.gil;
 #ifdef Py_GIL_DISABLED
     if (!_Py_atomic_load_int_relaxed(&gil->enabled)) {
-        return 0;
+        return;
     }
 #endif
 
@@ -358,10 +362,10 @@ take_gil(PyThreadState *tstate)
     if (!_Py_atomic_load_int_relaxed(&gil->enabled)) {
         // Another thread disabled the GIL between our check above and
         // now. Don't take the GIL, signal any other waiting threads, and
-        // return 0.
+        // return.
         COND_SIGNAL(gil->cond);
         MUTEX_UNLOCK(gil->mutex);
-        return 0;
+        return;
     }
 #endif
 
@@ -393,20 +397,21 @@ take_gil(PyThreadState *tstate)
            in take_gil() while the main thread called
            wait_for_thread_shutdown() from Py_Finalize(). */
         MUTEX_UNLOCK(gil->mutex);
-        /* Passing NULL to drop_gil() indicates that this thread is about to
-           terminate and will never hold the GIL again. */
-        drop_gil(interp, NULL);
+        /* tstate could be a dangling pointer, so don't pass it to
+           drop_gil(). */
+        drop_gil(interp, NULL, 1);
         PyThread_exit_thread();
     }
     assert(_PyThreadState_CheckConsistency(tstate));
 
+    tstate->_status.holds_gil = 1;
     _Py_unset_eval_breaker_bit(tstate, _PY_GIL_DROP_REQUEST_BIT);
     update_eval_breaker_for_thread(interp, tstate);
 
     MUTEX_UNLOCK(gil->mutex);
 
     errno = err;
-    return 1;
+    return;
 }
 
 void _PyEval_SetSwitchInterval(unsigned long microseconds)
@@ -451,10 +456,17 @@ PyEval_ThreadsInitialized(void)
 static inline int
 current_thread_holds_gil(struct _gil_runtime_state *gil, PyThreadState *tstate)
 {
-    if (((PyThreadState*)_Py_atomic_load_ptr_relaxed(&gil->last_holder)) != tstate) {
-        return 0;
-    }
-    return _Py_atomic_load_int_relaxed(&gil->locked);
+    int holds_gil = tstate->_status.holds_gil;
+
+    // holds_gil is the source of truth; check that last_holder and gil->locked
+    // are consistent with it.
+    int locked = _Py_atomic_load_int_relaxed(&gil->locked);
+    int is_last_holder =
+        ((PyThreadState*)_Py_atomic_load_ptr_relaxed(&gil->last_holder)) == tstate;
+    assert(!holds_gil || locked);
+    assert(!holds_gil || is_last_holder);
+
+    return holds_gil;
 }
 #endif
 
@@ -563,23 +575,24 @@ PyEval_ReleaseLock(void)
     /* This function must succeed when the current thread state is NULL.
        We therefore avoid PyThreadState_Get() which dumps a fatal error
        in debug mode. */
-    drop_gil(tstate->interp, tstate);
+    drop_gil(tstate->interp, tstate, 0);
 }
 
-int
+void
 _PyEval_AcquireLock(PyThreadState *tstate)
 {
     _Py_EnsureTstateNotNULL(tstate);
-    return take_gil(tstate);
+    take_gil(tstate);
 }
 
 void
-_PyEval_ReleaseLock(PyInterpreterState *interp, PyThreadState *tstate)
+_PyEval_ReleaseLock(PyInterpreterState *interp,
+                    PyThreadState *tstate,
+                    int final_release)
 {
-    /* If tstate is NULL then we do not expect the current thread
-       to acquire the GIL ever again. */
-    assert(tstate == NULL || tstate->interp == interp);
-    drop_gil(interp, tstate);
+    assert(tstate != NULL);
+    assert(tstate->interp == interp);
+    drop_gil(interp, tstate, final_release);
 }
 
 void
@@ -888,6 +901,18 @@ unsignal_pending_calls(PyThreadState *tstate, PyInterpreterState *interp)
 #endif
 }
 
+static void
+clear_pending_handling_thread(struct _pending_calls *pending)
+{
+#ifdef Py_GIL_DISABLED
+    PyMutex_Lock(&pending->mutex);
+    pending->handling_thread = NULL;
+    PyMutex_Unlock(&pending->mutex);
+#else
+    pending->handling_thread = NULL;
+#endif
+}
+
 static int
 make_pending_calls(PyThreadState *tstate)
 {
@@ -920,7 +945,7 @@ make_pending_calls(PyThreadState *tstate)
 
     int32_t npending;
     if (_make_pending_calls(pending, &npending) != 0) {
-        pending->handling_thread = NULL;
+        clear_pending_handling_thread(pending);
         /* There might not be more calls to make, but we play it safe. */
         signal_pending_calls(tstate, interp);
         return -1;
@@ -932,7 +957,7 @@ make_pending_calls(PyThreadState *tstate)
 
     if (_Py_IsMainThread() && _Py_IsMainInterpreter(interp)) {
         if (_make_pending_calls(pending_main, &npending) != 0) {
-            pending->handling_thread = NULL;
+            clear_pending_handling_thread(pending);
             /* There might not be more calls to make, but we play it safe. */
             signal_pending_calls(tstate, interp);
             return -1;
@@ -943,7 +968,7 @@ make_pending_calls(PyThreadState *tstate)
         }
     }
 
-    pending->handling_thread = NULL;
+    clear_pending_handling_thread(pending);
     return 0;
 }
 
@@ -978,12 +1003,34 @@ _Py_FinishPendingCalls(PyThreadState *tstate)
     assert(PyGILState_Check());
     assert(_PyThreadState_CheckConsistency(tstate));
 
-    if (make_pending_calls(tstate) < 0) {
-        PyObject *exc = _PyErr_GetRaisedException(tstate);
-        PyErr_BadInternalCall();
-        _PyErr_ChainExceptions1(exc);
-        _PyErr_Print(tstate);
-    }
+    struct _pending_calls *pending = &tstate->interp->ceval.pending;
+    struct _pending_calls *pending_main =
+            _Py_IsMainThread() && _Py_IsMainInterpreter(tstate->interp)
+            ? &_PyRuntime.ceval.pending_mainthread
+            : NULL;
+    /* make_pending_calls() may return early without making all pending
+       calls, so we keep trying until we're actually done. */
+    int32_t npending;
+#ifndef NDEBUG
+    int32_t npending_prev = INT32_MAX;
+#endif
+    do {
+        if (make_pending_calls(tstate) < 0) {
+            PyObject *exc = _PyErr_GetRaisedException(tstate);
+            PyErr_BadInternalCall();
+            _PyErr_ChainExceptions1(exc);
+            _PyErr_Print(tstate);
+        }
+
+        npending = _Py_atomic_load_int32_relaxed(&pending->npending);
+        if (pending_main != NULL) {
+            npending += _Py_atomic_load_int32_relaxed(&pending_main->npending);
+        }
+#ifndef NDEBUG
+        assert(npending_prev > npending);
+        npending_prev = npending;
+#endif
+    } while (npending > 0);
 }
 
 int
@@ -1136,7 +1183,12 @@ _PyEval_DisableGIL(PyThreadState *tstate)
         //
         // Drop the GIL, which will wake up any threads waiting in take_gil()
         // and let them resume execution without the GIL.
-        drop_gil_impl(gil);
+        drop_gil_impl(tstate, gil);
+
+        // If another thread asked us to drop the GIL, they should be
+        // free-threading by now. Remove any such request so we have a clean
+        // slate if/when the GIL is enabled again.
+        _Py_unset_eval_breaker_bit(tstate, _PY_GIL_DROP_REQUEST_BIT);
         return 1;
     }
     return 0;
diff --git a/Python/ceval_macros.h b/Python/ceval_macros.h
index 50941e4ec473e8..1ab83856fd9904 100644
--- a/Python/ceval_macros.h
+++ b/Python/ceval_macros.h
@@ -314,17 +314,18 @@ GETITEM(PyObject *v, Py_ssize_t i) {
         /* gh-115999 tracks progress on addressing this. */ \
         static_assert(0, "The specializing interpreter is not yet thread-safe"); \
     } while (0);
+#define PAUSE_ADAPTIVE_COUNTER(COUNTER) ((void)COUNTER)
 #else
 #define ADVANCE_ADAPTIVE_COUNTER(COUNTER) \
     do { \
         (COUNTER) = advance_backoff_counter((COUNTER)); \
     } while (0);
-#endif
 
 #define PAUSE_ADAPTIVE_COUNTER(COUNTER) \
     do { \
         (COUNTER) = pause_backoff_counter((COUNTER)); \
     } while (0);
+#endif
 
 #define UNBOUNDLOCAL_ERROR_MSG \
     "cannot access local variable '%s' where it is not associated with a value"
diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index 56a831eb2ea06e..8277d286cf51ef 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -968,24 +968,64 @@ sys_getallocatedblocks(PyObject *module, PyObject *Py_UNUSED(ignored))
 }
 
 PyDoc_STRVAR(sys_getunicodeinternedsize__doc__,
-"getunicodeinternedsize($module, /)\n"
+"getunicodeinternedsize($module, /, *, _only_immortal=False)\n"
 "--\n"
 "\n"
 "Return the number of elements of the unicode interned dictionary");
 
 #define SYS_GETUNICODEINTERNEDSIZE_METHODDEF    \
-    {"getunicodeinternedsize", (PyCFunction)sys_getunicodeinternedsize, METH_NOARGS, sys_getunicodeinternedsize__doc__},
+    {"getunicodeinternedsize", _PyCFunction_CAST(sys_getunicodeinternedsize), METH_FASTCALL|METH_KEYWORDS, sys_getunicodeinternedsize__doc__},
 
 static Py_ssize_t
-sys_getunicodeinternedsize_impl(PyObject *module);
+sys_getunicodeinternedsize_impl(PyObject *module, int _only_immortal);
 
 static PyObject *
-sys_getunicodeinternedsize(PyObject *module, PyObject *Py_UNUSED(ignored))
+sys_getunicodeinternedsize(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
+    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
+
+    #define NUM_KEYWORDS 1
+    static struct {
+        PyGC_Head _this_is_not_used;
+        PyObject_VAR_HEAD
+        PyObject *ob_item[NUM_KEYWORDS];
+    } _kwtuple = {
+        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
+        .ob_item = { &_Py_ID(_only_immortal), },
+    };
+    #undef NUM_KEYWORDS
+    #define KWTUPLE (&_kwtuple.ob_base.ob_base)
+
+    #else  // !Py_BUILD_CORE
+    #  define KWTUPLE NULL
+    #endif  // !Py_BUILD_CORE
+
+    static const char * const _keywords[] = {"_only_immortal", NULL};
+    static _PyArg_Parser _parser = {
+        .keywords = _keywords,
+        .fname = "getunicodeinternedsize",
+        .kwtuple = KWTUPLE,
+    };
+    #undef KWTUPLE
+    PyObject *argsbuf[1];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 0;
+    int _only_immortal = 0;
     Py_ssize_t _return_value;
 
-    _return_value = sys_getunicodeinternedsize_impl(module);
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 0, 0, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_kwonly;
+    }
+    _only_immortal = PyObject_IsTrue(args[0]);
+    if (_only_immortal < 0) {
+        goto exit;
+    }
+skip_optional_kwonly:
+    _return_value = sys_getunicodeinternedsize_impl(module, _only_immortal);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
     }
@@ -1574,4 +1614,4 @@ sys__is_gil_enabled(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=ef7c35945443d300 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9cc9069aef1482bc input=a9049054013a1b77]*/
diff --git a/Python/codecs.c b/Python/codecs.c
index bed245366f9234..9c0a3fad314cb5 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -147,7 +147,9 @@ PyObject *_PyCodec_Lookup(const char *encoding)
     if (v == NULL) {
         return NULL;
     }
-    PyUnicode_InternInPlace(&v);
+
+    /* Intern the string. We'll make it immortal later if lookup succeeds. */
+    _PyUnicode_InternMortal(interp, &v);
 
     /* First, try to lookup the name in the registry dictionary */
     PyObject *result;
@@ -200,6 +202,8 @@ PyObject *_PyCodec_Lookup(const char *encoding)
         goto onError;
     }
 
+    _PyUnicode_InternImmortal(interp, &v);
+
     /* Cache and return the result */
     if (PyDict_SetItem(interp->codecs.search_cache, v, result) < 0) {
         Py_DECREF(result);
diff --git a/Python/compile.c b/Python/compile.c
index 79f3baadca6b4a..c3cffd3920a028 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -119,6 +119,7 @@ enum fblocktype { WHILE_LOOP, FOR_LOOP, TRY_EXCEPT, FINALLY_TRY, FINALLY_END,
 struct fblockinfo {
     enum fblocktype fb_type;
     jump_target_label fb_block;
+    location fb_loc;
     /* (optional) type-specific exit or cleanup block */
     jump_target_label fb_exit;
     /* (optional) additional information required for unwinding */
@@ -589,9 +590,17 @@ compiler_unit_free(struct compiler_unit *u)
     PyMem_Free(u);
 }
 
-static struct compiler_unit *
-get_class_compiler_unit(struct compiler *c)
+static int
+compiler_maybe_add_static_attribute_to_class(struct compiler *c, expr_ty e)
 {
+    assert(e->kind == Attribute_kind);
+    expr_ty attr_value = e->v.Attribute.value;
+    if (attr_value->kind != Name_kind ||
+        e->v.Attribute.ctx != Store ||
+        !_PyUnicode_EqualToASCIIString(attr_value->v.Name.id, "self"))
+    {
+        return SUCCESS;
+    }
     Py_ssize_t stack_size = PyList_GET_SIZE(c->c_stack);
     for (Py_ssize_t i = stack_size - 1; i >= 0; i--) {
         PyObject *capsule = PyList_GET_ITEM(c->c_stack, i);
@@ -599,10 +608,12 @@ get_class_compiler_unit(struct compiler *c)
                                                               capsule, CAPSULE_NAME);
         assert(u);
         if (u->u_scope_type == COMPILER_SCOPE_CLASS) {
-            return u;
+            assert(u->u_static_attributes);
+            RETURN_IF_ERROR(PySet_Add(u->u_static_attributes, e->v.Attribute.attr));
+            break;
         }
     }
-    return NULL;
+    return SUCCESS;
 }
 
 static int
@@ -672,8 +683,7 @@ compiler_set_qualname(struct compiler *c)
     }
 
     if (base != NULL) {
-        _Py_DECLARE_STR(dot, ".");
-        name = PyUnicode_Concat(base, &_Py_STR(dot));
+        name = PyUnicode_Concat(base, _Py_LATIN1_CHR('.'));
         Py_DECREF(base);
         if (name == NULL) {
             return ERROR;
@@ -1001,7 +1011,7 @@ static int
 compiler_addop_name(struct compiler_unit *u, location loc,
                     int opcode, PyObject *dict, PyObject *o)
 {
-    PyObject *mangled = _Py_Mangle(u->u_private, o);
+    PyObject *mangled = _Py_MaybeMangle(u->u_private, u->u_ste, o);
     if (!mangled) {
         return ERROR;
     }
@@ -1424,6 +1434,7 @@ compiler_push_fblock(struct compiler *c, location loc,
     f = &c->u->u_fblock[c->u->u_nfblocks++];
     f->fb_type = t;
     f->fb_block = block_label;
+    f->fb_loc = loc;
     f->fb_exit = exit;
     f->fb_datum = datum;
     return SUCCESS;
@@ -1551,7 +1562,7 @@ compiler_unwind_fblock(struct compiler *c, location *ploc,
 
         case WITH:
         case ASYNC_WITH:
-            *ploc = LOC((stmt_ty)info->fb_datum);
+            *ploc = info->fb_loc;
             ADDOP(c, *ploc, POP_BLOCK);
             if (preserve_tos) {
                 ADDOP_I(c, *ploc, SWAP, 2);
@@ -1804,7 +1815,7 @@ compiler_make_closure(struct compiler *c, location loc,
                     c->u->u_metadata.u_name,
                     co->co_name,
                     freevars);
-                Py_DECREF(freevars);
+                Py_XDECREF(freevars);
                 return ERROR;
             }
             ADDOP_I(c, loc, LOAD_CLOSURE, arg);
@@ -1873,7 +1884,7 @@ compiler_visit_kwonlydefaults(struct compiler *c, location loc,
         arg_ty arg = asdl_seq_GET(kwonlyargs, i);
         expr_ty default_ = asdl_seq_GET(kw_defaults, i);
         if (default_) {
-            PyObject *mangled = _Py_Mangle(c->u->u_private, arg->arg);
+            PyObject *mangled = _Py_MaybeMangle(c->u->u_private, c->u->u_ste, arg->arg);
             if (!mangled) {
                 goto error;
             }
@@ -1930,7 +1941,7 @@ compiler_visit_argannotation(struct compiler *c, identifier id,
     if (!annotation) {
         return SUCCESS;
     }
-    PyObject *mangled = _Py_Mangle(c->u->u_private, id);
+    PyObject *mangled = _Py_MaybeMangle(c->u->u_private, c->u->u_ste, id);
     if (!mangled) {
         return ERROR;
     }
@@ -2533,7 +2544,18 @@ compiler_class_body(struct compiler *c, stmt_ty s, int firstlineno)
         return ERROR;
     }
     assert(c->u->u_static_attributes);
-    PyObject *static_attributes = PySequence_Tuple(c->u->u_static_attributes);
+    PyObject *static_attributes_unsorted = PySequence_List(c->u->u_static_attributes);
+    if (static_attributes_unsorted == NULL) {
+        compiler_exit_scope(c);
+        return ERROR;
+    }
+    if (PyList_Sort(static_attributes_unsorted) != 0) {
+        compiler_exit_scope(c);
+        Py_DECREF(static_attributes_unsorted);
+        return ERROR;
+    }
+    PyObject *static_attributes = PySequence_Tuple(static_attributes_unsorted);
+    Py_DECREF(static_attributes_unsorted);
     if (static_attributes == NULL) {
         compiler_exit_scope(c);
         return ERROR;
@@ -2625,7 +2647,6 @@ compiler_class(struct compiler *c, stmt_ty s)
     asdl_type_param_seq *type_params = s->v.ClassDef.type_params;
     int is_generic = asdl_seq_LEN(type_params) > 0;
     if (is_generic) {
-        Py_XSETREF(c->u->u_private, Py_NewRef(s->v.ClassDef.name));
         PyObject *type_params_name = PyUnicode_FromFormat("<generic parameters of %U>",
                                                          s->v.ClassDef.name);
         if (!type_params_name) {
@@ -2637,6 +2658,7 @@ compiler_class(struct compiler *c, stmt_ty s)
             return ERROR;
         }
         Py_DECREF(type_params_name);
+        Py_XSETREF(c->u->u_private, Py_NewRef(s->v.ClassDef.name));
         RETURN_IF_ERROR_IN_SCOPE(c, compiler_type_params(c, type_params));
         _Py_DECLARE_STR(type_params, ".type_params");
         RETURN_IF_ERROR_IN_SCOPE(c, compiler_nameop(c, loc, &_Py_STR(type_params), Store));
@@ -3043,7 +3065,7 @@ compiler_lambda(struct compiler *c, expr_ty e)
         co = optimize_and_assemble(c, 0);
     }
     else {
-        location loc = LOCATION(e->lineno, e->lineno, 0, 0);
+        location loc = LOC(e->v.Lambda.body);
         ADDOP_IN_SCOPE(c, loc, RETURN_VALUE);
         co = optimize_and_assemble(c, 1);
     }
@@ -3101,11 +3123,18 @@ compiler_for(struct compiler *c, stmt_ty s)
     RETURN_IF_ERROR(compiler_push_fblock(c, loc, FOR_LOOP, start, end, NULL));
 
     VISIT(c, expr, s->v.For.iter);
+
+    loc = LOC(s->v.For.iter);
     ADDOP(c, loc, GET_ITER);
 
     USE_LABEL(c, start);
     ADDOP_JUMP(c, loc, FOR_ITER, cleanup);
 
+    /* Add NOP to ensure correct line tracing of multiline for statements.
+     * It will be removed later if redundant.
+     */
+    ADDOP(c, LOC(s->v.For.target), NOP);
+
     USE_LABEL(c, body);
     VISIT(c, expr, s->v.For.target);
     VISIT_SEQ(c, stmt, s->v.For.body);
@@ -3144,7 +3173,7 @@ compiler_async_for(struct compiler *c, stmt_ty s)
     NEW_JUMP_TARGET_LABEL(c, end);
 
     VISIT(c, expr, s->v.AsyncFor.iter);
-    ADDOP(c, loc, GET_AITER);
+    ADDOP(c, LOC(s->v.AsyncFor.iter), GET_AITER);
 
     USE_LABEL(c, start);
     RETURN_IF_ERROR(compiler_push_fblock(c, loc, FOR_LOOP, start, end, NULL));
@@ -4203,7 +4232,7 @@ compiler_nameop(struct compiler *c, location loc,
         return ERROR;
     }
 
-    mangled = _Py_Mangle(c->u->u_private, name);
+    mangled = _Py_MaybeMangle(c->u->u_private, c->u->u_ste, name);
     if (!mangled) {
         return ERROR;
     }
@@ -5286,9 +5315,12 @@ compiler_call_helper(struct compiler *c, location loc,
 }
 
 
-/* List and set comprehensions and generator expressions work by creating a
-  nested function to perform the actual iteration. This means that the
-  iteration variables don't leak into the current scope.
+/* List and set comprehensions work by being inlined at the location where
+  they are defined. The isolation of iteration variables is provided by
+  pushing/popping clashing locals on the stack. Generator expressions work
+  by creating a nested function to perform the actual iteration.
+  This means that the iteration variables don't leak into the current scope.
+  See https://peps.python.org/pep-0709/ for additional information.
   The defined function is called immediately following its definition, with the
   result of that call being the result of the expression.
   The LC/SC version returns the populated container, while the GE version is
@@ -5368,14 +5400,16 @@ compiler_sync_comprehension_generator(struct compiler *c, location loc,
             }
             if (IS_LABEL(start)) {
                 VISIT(c, expr, gen->iter);
-                ADDOP(c, loc, GET_ITER);
+                ADDOP(c, LOC(gen->iter), GET_ITER);
             }
         }
     }
+
     if (IS_LABEL(start)) {
         depth++;
+        ADDOP(c, LOC(gen->iter), GET_ITER);
         USE_LABEL(c, start);
-        ADDOP_JUMP(c, loc, FOR_ITER, anchor);
+        ADDOP_JUMP(c, LOC(gen->iter), FOR_ITER, anchor);
     }
     VISIT(c, expr, gen->target);
 
@@ -5467,7 +5501,7 @@ compiler_async_comprehension_generator(struct compiler *c, location loc,
         else {
             /* Sub-iter - calculate on the fly */
             VISIT(c, expr, gen->iter);
-            ADDOP(c, loc, GET_AITER);
+            ADDOP(c, LOC(gen->iter), GET_AITER);
         }
     }
 
@@ -5757,15 +5791,14 @@ pop_inlined_comprehension_state(struct compiler *c, location loc,
 }
 
 static inline int
-compiler_comprehension_iter(struct compiler *c, location loc,
-                            comprehension_ty comp)
+compiler_comprehension_iter(struct compiler *c, comprehension_ty comp)
 {
     VISIT(c, expr, comp->iter);
     if (comp->is_async) {
-        ADDOP(c, loc, GET_AITER);
+        ADDOP(c, LOC(comp->iter), GET_AITER);
     }
     else {
-        ADDOP(c, loc, GET_ITER);
+        ADDOP(c, LOC(comp->iter), GET_ITER);
     }
     return SUCCESS;
 }
@@ -5791,7 +5824,7 @@ compiler_comprehension(struct compiler *c, expr_ty e, int type,
 
     outermost = (comprehension_ty) asdl_seq_GET(generators, 0);
     if (is_inlined) {
-        if (compiler_comprehension_iter(c, loc, outermost)) {
+        if (compiler_comprehension_iter(c, outermost)) {
             goto error;
         }
         if (push_inlined_comprehension_state(c, loc, entry, &inline_state)) {
@@ -5877,7 +5910,7 @@ compiler_comprehension(struct compiler *c, expr_ty e, int type,
     }
     Py_CLEAR(co);
 
-    if (compiler_comprehension_iter(c, loc, outermost)) {
+    if (compiler_comprehension_iter(c, outermost)) {
         goto error;
     }
 
@@ -6020,7 +6053,7 @@ compiler_async_with(struct compiler *c, stmt_ty s, int pos)
 
     /* Evaluate EXPR */
     VISIT(c, expr, item->context_expr);
-
+    loc = LOC(item->context_expr);
     ADDOP(c, loc, BEFORE_ASYNC_WITH);
     ADDOP_I(c, loc, GET_AWAITABLE, 1);
     ADDOP_LOAD_CONST(c, loc, Py_None);
@@ -6118,7 +6151,7 @@ compiler_with(struct compiler *c, stmt_ty s, int pos)
     /* Evaluate EXPR */
     VISIT(c, expr, item->context_expr);
     /* Will push bound __exit__ */
-    location loc = LOC(s);
+    location loc = LOC(item->context_expr);
     ADDOP(c, loc, BEFORE_WITH);
     ADDOP_JUMP(c, loc, SETUP_WITH, final);
 
@@ -6151,7 +6184,6 @@ compiler_with(struct compiler *c, stmt_ty s, int pos)
     /* For successful outcome:
      * call __exit__(None, None, None)
      */
-    loc = LOC(s);
     RETURN_IF_ERROR(compiler_call_exit_with_nones(c, loc));
     ADDOP(c, loc, POP_TOP);
     ADDOP_JUMP(c, loc, JUMP, exit);
@@ -6228,7 +6260,7 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
         break;
     case YieldFrom_kind:
         if (!_PyST_IsFunctionLike(c->u->u_ste)) {
-            return compiler_error(c, loc, "'yield' outside function");
+            return compiler_error(c, loc, "'yield from' outside function");
         }
         if (c->u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION) {
             return compiler_error(c, loc, "'yield from' inside async function");
@@ -6277,17 +6309,7 @@ compiler_visit_expr1(struct compiler *c, expr_ty e)
             ADDOP(c, loc, NOP);
             return SUCCESS;
         }
-        if (e->v.Attribute.value->kind == Name_kind &&
-            _PyUnicode_EqualToASCIIString(e->v.Attribute.value->v.Name.id, "self"))
-        {
-            struct compiler_unit *class_u = get_class_compiler_unit(c);
-            if (class_u != NULL) {
-                assert(class_u->u_scope_type == COMPILER_SCOPE_CLASS);
-                assert(class_u->u_static_attributes);
-                RETURN_IF_ERROR(
-                    PySet_Add(class_u->u_static_attributes, e->v.Attribute.attr));
-            }
-        }
+        RETURN_IF_ERROR(compiler_maybe_add_static_attribute_to_class(c, e));
         VISIT(c, expr, e->v.Attribute.value);
         loc = LOC(e);
         loc = update_start_location_to_match_attr(c, loc, e);
@@ -6512,7 +6534,7 @@ compiler_annassign(struct compiler *c, stmt_ty s)
                 VISIT(c, expr, s->v.AnnAssign.annotation);
             }
             ADDOP_NAME(c, loc, LOAD_NAME, &_Py_ID(__annotations__), names);
-            mangled = _Py_Mangle(c->u->u_private, targ->v.Name.id);
+            mangled = _Py_MaybeMangle(c->u->u_private, c->u->u_ste, targ->v.Name.id);
             ADDOP_LOAD_CONST_NEW(c, loc, mangled);
             ADDOP(c, loc, STORE_SUBSCR);
         }
@@ -7472,7 +7494,7 @@ compiler_match_inner(struct compiler *c, stmt_ty s, pattern_context *pc)
             ADDOP(c, LOC(m->pattern), POP_TOP);
         }
         VISIT_SEQ(c, stmt, m->body);
-        ADDOP_JUMP(c, NO_LOCATION, JUMP_NO_INTERRUPT, end);
+        ADDOP_JUMP(c, NO_LOCATION, JUMP, end);
         // If the pattern fails to match, we want the line number of the
         // cleanup to be associated with the failed pattern, not the last line
         // of the body
diff --git a/Python/context.c b/Python/context.c
index 3937819b3c386c..c5052935b34dab 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -203,6 +203,7 @@ PyContextVar_Get(PyObject *ovar, PyObject *def, PyObject **val)
         goto not_found;
     }
 
+#ifndef Py_GIL_DISABLED
     if (var->var_cached != NULL &&
             var->var_cached_tsid == ts->id &&
             var->var_cached_tsver == ts->context_ver)
@@ -210,6 +211,7 @@ PyContextVar_Get(PyObject *ovar, PyObject *def, PyObject **val)
         *val = var->var_cached;
         goto found;
     }
+#endif
 
     assert(PyContext_CheckExact(ts->context));
     PyHamtObject *vars = ((PyContext *)ts->context)->ctx_vars;
@@ -221,9 +223,11 @@ PyContextVar_Get(PyObject *ovar, PyObject *def, PyObject **val)
     }
     if (res == 1) {
         assert(found != NULL);
+#ifndef Py_GIL_DISABLED
         var->var_cached = found;  /* borrow */
         var->var_cached_tsid = ts->id;
         var->var_cached_tsver = ts->context_ver;
+#endif
 
         *val = found;
         goto found;
@@ -661,6 +665,7 @@ context_run(PyContext *self, PyObject *const *args,
         ts, args[0], args + 1, nargs - 1, kwnames);
 
     if (_PyContext_Exit(ts, (PyObject *)self)) {
+        Py_XDECREF(call_result);
         return NULL;
     }
 
@@ -722,8 +727,10 @@ PyTypeObject PyContext_Type = {
 static int
 contextvar_set(PyContextVar *var, PyObject *val)
 {
+#ifndef Py_GIL_DISABLED
     var->var_cached = NULL;
     PyThreadState *ts = _PyThreadState_GET();
+#endif
 
     PyContext *ctx = context_get();
     if (ctx == NULL) {
@@ -738,16 +745,20 @@ contextvar_set(PyContextVar *var, PyObject *val)
 
     Py_SETREF(ctx->ctx_vars, new_vars);
 
+#ifndef Py_GIL_DISABLED
     var->var_cached = val;  /* borrow */
     var->var_cached_tsid = ts->id;
     var->var_cached_tsver = ts->context_ver;
+#endif
     return 0;
 }
 
 static int
 contextvar_del(PyContextVar *var)
 {
+#ifndef Py_GIL_DISABLED
     var->var_cached = NULL;
+#endif
 
     PyContext *ctx = context_get();
     if (ctx == NULL) {
@@ -822,9 +833,11 @@ contextvar_new(PyObject *name, PyObject *def)
 
     var->var_default = Py_XNewRef(def);
 
+#ifndef Py_GIL_DISABLED
     var->var_cached = NULL;
     var->var_cached_tsid = 0;
     var->var_cached_tsver = 0;
+#endif
 
     if (_PyObject_GC_MAY_BE_TRACKED(name) ||
             (def != NULL && _PyObject_GC_MAY_BE_TRACKED(def)))
@@ -862,9 +875,11 @@ contextvar_tp_clear(PyContextVar *self)
 {
     Py_CLEAR(self->var_name);
     Py_CLEAR(self->var_default);
+#ifndef Py_GIL_DISABLED
     self->var_cached = NULL;
     self->var_cached_tsid = 0;
     self->var_cached_tsver = 0;
+#endif
     return 0;
 }
 
diff --git a/Python/critical_section.c b/Python/critical_section.c
index 2214d80eeb297b..62ed25523fd6dc 100644
--- a/Python/critical_section.c
+++ b/Python/critical_section.c
@@ -3,85 +3,96 @@
 #include "pycore_lock.h"
 #include "pycore_critical_section.h"
 
-static_assert(_Alignof(_PyCriticalSection) >= 4,
+#ifdef Py_GIL_DISABLED
+static_assert(_Alignof(PyCriticalSection) >= 4,
               "critical section must be aligned to at least 4 bytes");
+#endif
 
 void
-_PyCriticalSection_BeginSlow(_PyCriticalSection *c, PyMutex *m)
+_PyCriticalSection_BeginSlow(PyCriticalSection *c, PyMutex *m)
 {
+#ifdef Py_GIL_DISABLED
     PyThreadState *tstate = _PyThreadState_GET();
-    c->mutex = NULL;
-    c->prev = (uintptr_t)tstate->critical_section;
+    c->_cs_mutex = NULL;
+    c->_cs_prev = (uintptr_t)tstate->critical_section;
     tstate->critical_section = (uintptr_t)c;
 
-    _PyMutex_LockSlow(m);
-    c->mutex = m;
+    PyMutex_Lock(m);
+    c->_cs_mutex = m;
+#endif
 }
 
 void
-_PyCriticalSection2_BeginSlow(_PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
+_PyCriticalSection2_BeginSlow(PyCriticalSection2 *c, PyMutex *m1, PyMutex *m2,
                               int is_m1_locked)
 {
+#ifdef Py_GIL_DISABLED
     PyThreadState *tstate = _PyThreadState_GET();
-    c->base.mutex = NULL;
-    c->mutex2 = NULL;
-    c->base.prev = tstate->critical_section;
+    c->_cs_base._cs_mutex = NULL;
+    c->_cs_mutex2 = NULL;
+    c->_cs_base._cs_prev = tstate->critical_section;
     tstate->critical_section = (uintptr_t)c | _Py_CRITICAL_SECTION_TWO_MUTEXES;
 
     if (!is_m1_locked) {
         PyMutex_Lock(m1);
     }
     PyMutex_Lock(m2);
-    c->base.mutex = m1;
-    c->mutex2 = m2;
+    c->_cs_base._cs_mutex = m1;
+    c->_cs_mutex2 = m2;
+#endif
 }
 
-static _PyCriticalSection *
+#ifdef Py_GIL_DISABLED
+static PyCriticalSection *
 untag_critical_section(uintptr_t tag)
 {
-    return (_PyCriticalSection *)(tag & ~_Py_CRITICAL_SECTION_MASK);
+    return (PyCriticalSection *)(tag & ~_Py_CRITICAL_SECTION_MASK);
 }
+#endif
 
 // Release all locks held by critical sections. This is called by
 // _PyThreadState_Detach.
 void
 _PyCriticalSection_SuspendAll(PyThreadState *tstate)
 {
+#ifdef Py_GIL_DISABLED
     uintptr_t *tagptr = &tstate->critical_section;
     while (_PyCriticalSection_IsActive(*tagptr)) {
-        _PyCriticalSection *c = untag_critical_section(*tagptr);
+        PyCriticalSection *c = untag_critical_section(*tagptr);
 
-        if (c->mutex) {
-            PyMutex_Unlock(c->mutex);
+        if (c->_cs_mutex) {
+            PyMutex_Unlock(c->_cs_mutex);
             if ((*tagptr & _Py_CRITICAL_SECTION_TWO_MUTEXES)) {
-                _PyCriticalSection2 *c2 = (_PyCriticalSection2 *)c;
-                if (c2->mutex2) {
-                    PyMutex_Unlock(c2->mutex2);
+                PyCriticalSection2 *c2 = (PyCriticalSection2 *)c;
+                if (c2->_cs_mutex2) {
+                    PyMutex_Unlock(c2->_cs_mutex2);
                 }
             }
         }
 
         *tagptr |= _Py_CRITICAL_SECTION_INACTIVE;
-        tagptr = &c->prev;
+        tagptr = &c->_cs_prev;
     }
+#endif
 }
 
 void
 _PyCriticalSection_Resume(PyThreadState *tstate)
 {
+#ifdef Py_GIL_DISABLED
     uintptr_t p = tstate->critical_section;
-    _PyCriticalSection *c = untag_critical_section(p);
+    PyCriticalSection *c = untag_critical_section(p);
     assert(!_PyCriticalSection_IsActive(p));
 
-    PyMutex *m1 = c->mutex;
-    c->mutex = NULL;
+    PyMutex *m1 = c->_cs_mutex;
+    c->_cs_mutex = NULL;
 
     PyMutex *m2 = NULL;
-    _PyCriticalSection2 *c2 = NULL;
+    PyCriticalSection2 *c2 = NULL;
     if ((p & _Py_CRITICAL_SECTION_TWO_MUTEXES)) {
-        c2 = (_PyCriticalSection2 *)c;
-        m2 = c2->mutex2;
-        c2->mutex2 = NULL;
+        c2 = (PyCriticalSection2 *)c;
+        m2 = c2->_cs_mutex2;
+        c2->_cs_mutex2 = NULL;
     }
 
     if (m1) {
@@ -91,10 +102,47 @@ _PyCriticalSection_Resume(PyThreadState *tstate)
         PyMutex_Lock(m2);
     }
 
-    c->mutex = m1;
+    c->_cs_mutex = m1;
     if (m2) {
-        c2->mutex2 = m2;
+        c2->_cs_mutex2 = m2;
     }
 
     tstate->critical_section &= ~_Py_CRITICAL_SECTION_INACTIVE;
+#endif
+}
+
+#undef PyCriticalSection_Begin
+void
+PyCriticalSection_Begin(PyCriticalSection *c, PyObject *op)
+{
+#ifdef Py_GIL_DISABLED
+    _PyCriticalSection_Begin(c, op);
+#endif
+}
+
+#undef PyCriticalSection_End
+void
+PyCriticalSection_End(PyCriticalSection *c)
+{
+#ifdef Py_GIL_DISABLED
+    _PyCriticalSection_End(c);
+#endif
+}
+
+#undef PyCriticalSection2_Begin
+void
+PyCriticalSection2_Begin(PyCriticalSection2 *c, PyObject *a, PyObject *b)
+{
+#ifdef Py_GIL_DISABLED
+    _PyCriticalSection2_Begin(c, a, b);
+#endif
+}
+
+#undef PyCriticalSection2_End
+void
+PyCriticalSection2_End(PyCriticalSection2 *c)
+{
+#ifdef Py_GIL_DISABLED
+    _PyCriticalSection2_End(c);
+#endif
 }
diff --git a/Python/crossinterp.c b/Python/crossinterp.c
index 367e29d40d895a..ac379a1ad0fb6d 100644
--- a/Python/crossinterp.c
+++ b/Python/crossinterp.c
@@ -346,6 +346,11 @@ _copy_string_obj_raw(PyObject *strobj, Py_ssize_t *p_size)
         return NULL;
     }
 
+    if (size != (Py_ssize_t)strlen(str)) {
+        PyErr_SetString(PyExc_ValueError, "found embedded NULL character");
+        return NULL;
+    }
+
     char *copied = PyMem_RawMalloc(size+1);
     if (copied == NULL) {
         PyErr_NoMemory();
@@ -699,7 +704,7 @@ _PyXI_excinfo_InitFromException(_PyXI_excinfo *info, PyObject *exc)
         Py_DECREF(tbexc);
         if (info->errdisplay == NULL) {
 #ifdef Py_DEBUG
-            PyErr_FormatUnraisable("Exception ignored while formating TracebackException");
+            PyErr_FormatUnraisable("Exception ignored while formatting TracebackException");
 #endif
             PyErr_Clear();
         }
@@ -985,8 +990,8 @@ _PyXI_ApplyErrorCode(_PyXI_errcode code, PyInterpreterState *interp)
         break;
     case _PyXI_ERR_ALREADY_RUNNING:
         assert(interp != NULL);
-        assert(_PyInterpreterState_IsRunningMain(interp));
-        _PyInterpreterState_FailIfRunningMain(interp);
+        // In 3.14+ we use _PyErr_SetInterpreterAlreadyRunning().
+        PyErr_SetString(PyExc_InterpreterError, "interpreter already running");
         break;
     case _PyXI_ERR_MAIN_NS_FAILURE:
         PyErr_SetString(PyExc_InterpreterError,
@@ -1544,8 +1549,7 @@ _enter_session(_PyXI_session *session, PyInterpreterState *interp)
     PyThreadState *tstate = PyThreadState_Get();
     PyThreadState *prev = tstate;
     if (interp != tstate->interp) {
-        tstate = PyThreadState_New(interp);
-        _PyThreadState_SetWhence(tstate, _PyThreadState_WHENCE_EXEC);
+        tstate = _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_EXEC);
         // XXX Possible GILState issues?
         session->prev_tstate = PyThreadState_Swap(tstate);
         assert(session->prev_tstate == prev);
@@ -1895,8 +1899,7 @@ _PyXI_EndInterpreter(PyInterpreterState *interp,
             tstate = cur_tstate;
         }
         else {
-            tstate = PyThreadState_New(interp);
-            _PyThreadState_SetWhence(tstate, _PyThreadState_WHENCE_INTERP);
+            tstate = _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_FINI);
             assert(tstate != NULL);
             save_tstate = PyThreadState_Swap(tstate);
         }
diff --git a/Python/crossinterp_exceptions.h b/Python/crossinterp_exceptions.h
index 6ecc10c7955fd8..278511da615c75 100644
--- a/Python/crossinterp_exceptions.h
+++ b/Python/crossinterp_exceptions.h
@@ -90,6 +90,6 @@ static void
 fini_exceptions(PyInterpreterState *interp)
 {
     // Likewise with _fini_not_shareable_error_type().
-    _PyStaticType_Dealloc(interp, &_PyExc_InterpreterNotFoundError);
-    _PyStaticType_Dealloc(interp, &_PyExc_InterpreterError);
+    _PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterNotFoundError);
+    _PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterError);
 }
diff --git a/Python/emscripten_trampoline.c b/Python/emscripten_trampoline.c
index 2a80ec4f18d757..960c6b4a2ef995 100644
--- a/Python/emscripten_trampoline.c
+++ b/Python/emscripten_trampoline.c
@@ -10,7 +10,17 @@
  * https://github.com/GoogleChromeLabs/wasm-feature-detect/blob/main/src/detectors/type-reflection/index.js
  */
 EM_JS(int, _PyEM_detect_type_reflection, (), {
-    return "Function" in WebAssembly;
+    if (!("Function" in WebAssembly)) {
+        return false;
+    }
+    if (WebAssembly.Function.type) {
+        // Node v20
+        Module.PyEM_CountArgs = (func) => WebAssembly.Function.type(wasmTable.get(func)).parameters.length;
+    } else {
+        // Node >= 22, v8-based browsers
+        Module.PyEM_CountArgs = (func) => wasmTable.get(func).type().parameters.length;
+    }
+    return true;
 });
 
 void
@@ -43,7 +53,7 @@ EM_JS(int, _PyEM_CountFuncParams, (PyCFunctionWithKeywords func),
     if (n !== undefined) {
         return n;
     }
-    n = WebAssembly.Function.type(wasmTable.get(func)).parameters.length;
+    n = Module.PyEM_CountArgs(func);
     _PyEM_CountFuncParams.cache.set(func, n);
     return n;
 }
diff --git a/Python/errors.c b/Python/errors.c
index 433253b8f9aada..f19c030b1be114 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -299,6 +299,15 @@ PyErr_SetString(PyObject *exception, const char *string)
     _PyErr_SetString(tstate, exception, string);
 }
 
+void
+_PyErr_SetLocaleString(PyObject *exception, const char *string)
+{
+    PyObject *value = PyUnicode_DecodeLocale(string, "surrogateescape");
+    if (value != NULL) {
+        PyErr_SetObject(exception, value);
+        Py_DECREF(value);
+    }
+}
 
 PyObject* _Py_HOT_FUNCTION
 PyErr_Occurred(void)
@@ -1856,44 +1865,44 @@ PyErr_SyntaxLocationEx(const char *filename, int lineno, int col_offset)
    functionality in tb_displayline() in traceback.c. */
 
 static PyObject *
-err_programtext(PyThreadState *tstate, FILE *fp, int lineno, const char* encoding)
+err_programtext(FILE *fp, int lineno, const char* encoding)
 {
-    int i;
     char linebuf[1000];
-    if (fp == NULL) {
-        return NULL;
+    size_t line_size = 0;
+
+    for (int i = 0; i < lineno; ) {
+        line_size = 0;
+        if (_Py_UniversalNewlineFgetsWithSize(linebuf, sizeof(linebuf),
+                                              fp, NULL, &line_size) == NULL)
+        {
+            /* Error or EOF. */
+            return NULL;
+        }
+        /* fgets read *something*; if it didn't fill the
+           whole buffer, it must have found a newline
+           or hit the end of the file; if the last character is \n,
+           it obviously found a newline; else we haven't
+           yet seen a newline, so must continue */
+        if (i + 1 < lineno
+            && line_size == sizeof(linebuf) - 1
+            && linebuf[sizeof(linebuf) - 2] != '\n')
+        {
+            continue;
+        }
+        i++;
     }
 
-    for (i = 0; i < lineno; i++) {
-        char *pLastChar = &linebuf[sizeof(linebuf) - 2];
-        do {
-            *pLastChar = '\0';
-            if (Py_UniversalNewlineFgets(linebuf, sizeof linebuf,
-                                         fp, NULL) == NULL) {
-                goto after_loop;
-            }
-            /* fgets read *something*; if it didn't get as
-               far as pLastChar, it must have found a newline
-               or hit the end of the file; if pLastChar is \n,
-               it obviously found a newline; else we haven't
-               yet seen a newline, so must continue */
-        } while (*pLastChar != '\0' && *pLastChar != '\n');
+    const char *line = linebuf;
+    /* Skip BOM. */
+    if (lineno == 1 && line_size >= 3 && memcmp(line, "\xef\xbb\xbf", 3) == 0) {
+        line += 3;
+        line_size -= 3;
     }
-
-after_loop:
-    fclose(fp);
-    if (i == lineno) {
-        PyObject *res;
-        if (encoding != NULL) {
-            res = PyUnicode_Decode(linebuf, strlen(linebuf), encoding, "replace");
-        } else {
-            res = PyUnicode_FromString(linebuf);
-        }
-        if (res == NULL)
-            _PyErr_Clear(tstate);
-        return res;
+    PyObject *res = PyUnicode_Decode(line, line_size, encoding, "replace");
+    if (res == NULL) {
+        PyErr_Clear();
     }
-    return NULL;
+    return res;
 }
 
 PyObject *
@@ -1913,20 +1922,41 @@ PyErr_ProgramText(const char *filename, int lineno)
     return res;
 }
 
+/* Function from Parser/tokenizer/file_tokenizer.c */
+extern char* _PyTokenizer_FindEncodingFilename(int, PyObject *);
+
 PyObject *
 _PyErr_ProgramDecodedTextObject(PyObject *filename, int lineno, const char* encoding)
 {
+    char *found_encoding = NULL;
     if (filename == NULL || lineno <= 0) {
         return NULL;
     }
 
-    PyThreadState *tstate = _PyThreadState_GET();
     FILE *fp = _Py_fopen_obj(filename, "r" PY_STDIOTEXTMODE);
     if (fp == NULL) {
-        _PyErr_Clear(tstate);
+        PyErr_Clear();
         return NULL;
     }
-    return err_programtext(tstate, fp, lineno, encoding);
+    if (encoding == NULL) {
+        int fd = fileno(fp);
+        found_encoding = _PyTokenizer_FindEncodingFilename(fd, filename);
+        encoding = found_encoding;
+        if (encoding == NULL) {
+            PyErr_Clear();
+            encoding = "utf-8";
+        }
+        /* Reset position */
+        if (lseek(fd, 0, SEEK_SET) == (off_t)-1) {
+            fclose(fp);
+            PyMem_Free(found_encoding);
+            return NULL;
+        }
+    }
+    PyObject *res = err_programtext(fp, lineno, encoding);
+    fclose(fp);
+    PyMem_Free(found_encoding);
+    return res;
 }
 
 PyObject *
diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
index 347a1e677a0832..df7c19a80e40c5 100644
--- a/Python/executor_cases.c.h
+++ b/Python/executor_cases.c.h
@@ -347,7 +347,7 @@
             }
             STAT_INC(TO_BOOL, hit);
             if (_PyLong_IsZero((PyLongObject *)value)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
@@ -398,7 +398,7 @@
             }
             STAT_INC(TO_BOOL, hit);
             if (value == &_Py_STR(empty)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
@@ -1394,35 +1394,7 @@
             break;
         }
 
-        case _LOAD_FROM_DICT_OR_GLOBALS: {
-            PyObject *mod_or_class_dict;
-            PyObject *v;
-            oparg = CURRENT_OPARG();
-            mod_or_class_dict = stack_pointer[-1];
-            PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
-            if (PyMapping_GetOptionalItem(mod_or_class_dict, name, &v) < 0) {
-                JUMP_TO_ERROR();
-            }
-            if (v == NULL) {
-                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
-                    JUMP_TO_ERROR();
-                }
-                if (v == NULL) {
-                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
-                        JUMP_TO_ERROR();
-                    }
-                    if (v == NULL) {
-                        _PyEval_FormatExcCheckArg(
-                            tstate, PyExc_NameError,
-                            NAME_ERROR_MSG, name);
-                        JUMP_TO_ERROR();
-                    }
-                }
-            }
-            Py_DECREF(mod_or_class_dict);
-            stack_pointer[-1] = v;
-            break;
-        }
+        /* _LOAD_FROM_DICT_OR_GLOBALS is not a viable micro-op for tier 2 because it has both popping and not-popping errors */
 
         /* _LOAD_NAME is not a viable micro-op for tier 2 because it has both popping and not-popping errors */
 
@@ -1558,7 +1530,7 @@
         case _MAKE_CELL: {
             oparg = CURRENT_OPARG();
             // "initial" is probably NULL but not if it's an arg (or set
-            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
+            // via the f_locals proxy before MAKE_CELL has run).
             PyObject *initial = GETLOCAL(oparg);
             PyObject *cell = PyCell_New(initial);
             if (cell == NULL) {
@@ -2663,6 +2635,7 @@
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                         JUMP_TO_ERROR();
                     }
+                    _PyEval_MonitorRaise(tstate, frame, frame->instr_ptr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
@@ -2703,8 +2676,11 @@
                 JUMP_TO_JUMP_TARGET();
             }
             if ((size_t)it->it_index >= (size_t)PyList_GET_SIZE(seq)) {
-                UOP_STAT_INC(uopcode, miss);
-                JUMP_TO_JUMP_TARGET();
+                it->it_index = -1;
+                if (1) {
+                    UOP_STAT_INC(uopcode, miss);
+                    JUMP_TO_JUMP_TARGET();
+                }
             }
             break;
         }
@@ -4414,8 +4390,6 @@
                 if (optimized <= 0) {
                     exit->temperature = restart_backoff_counter(exit->temperature);
                     if (optimized < 0) {
-                        Py_DECREF(current_executor);
-                        tstate->previous_executor = Py_None;
                         GOTO_UNWIND();
                     }
                     GOTO_TIER_ONE(target);
diff --git a/Python/fileutils.c b/Python/fileutils.c
index e6a5391a3a28b5..9529b14d377c60 100644
--- a/Python/fileutils.c
+++ b/Python/fileutils.c
@@ -1502,7 +1502,7 @@ set_inheritable(int fd, int inheritable, int raise, int *atomic_flag_works)
 #else
 
 #if defined(HAVE_SYS_IOCTL_H) && defined(FIOCLEX) && defined(FIONCLEX)
-    if (ioctl_works != 0 && raise != 0) {
+    if (raise != 0 && _Py_atomic_load_int_relaxed(&ioctl_works) != 0) {
         /* fast-path: ioctl() only requires one syscall */
         /* caveat: raise=0 is an indicator that we must be async-signal-safe
          * thus avoid using ioctl() so we skip the fast-path. */
@@ -1512,7 +1512,9 @@ set_inheritable(int fd, int inheritable, int raise, int *atomic_flag_works)
             request = FIOCLEX;
         err = ioctl(fd, request, NULL);
         if (!err) {
-            ioctl_works = 1;
+            if (_Py_atomic_load_int_relaxed(&ioctl_works) == -1) {
+                _Py_atomic_store_int_relaxed(&ioctl_works, 1);
+            }
             return 0;
         }
 
@@ -1539,7 +1541,7 @@ set_inheritable(int fd, int inheritable, int raise, int *atomic_flag_works)
                with EACCES. While FIOCLEX is safe operation it may be
                unavailable because ioctl was denied altogether.
                This can be the case on Android. */
-            ioctl_works = 0;
+            _Py_atomic_store_int_relaxed(&ioctl_works, 0);
         }
         /* fallback to fcntl() if ioctl() does not work */
     }
@@ -2504,37 +2506,38 @@ _Py_normpath_and_size(wchar_t *path, Py_ssize_t size, Py_ssize_t *normsize)
 #endif
 #define SEP_OR_END(x) (IS_SEP(x) || IS_END(x))
 
-    if (p1[0] == L'.' && IS_SEP(&p1[1])) {
-        // Skip leading '.\'
-        path = &path[2];
-        while (IS_SEP(path)) {
-            path++;
-        }
-        p1 = p2 = minP2 = path;
-        lastC = SEP;
-    }
-    else {
-        Py_ssize_t drvsize, rootsize;
-        _Py_skiproot(path, size, &drvsize, &rootsize);
-        if (drvsize || rootsize) {
-            // Skip past root and update minP2
-            p1 = &path[drvsize + rootsize];
+    Py_ssize_t drvsize, rootsize;
+    _Py_skiproot(path, size, &drvsize, &rootsize);
+    if (drvsize || rootsize) {
+        // Skip past root and update minP2
+        p1 = &path[drvsize + rootsize];
 #ifndef ALTSEP
-            p2 = p1;
+        p2 = p1;
 #else
-            for (; p2 < p1; ++p2) {
-                if (*p2 == ALTSEP) {
-                    *p2 = SEP;
-                }
+        for (; p2 < p1; ++p2) {
+            if (*p2 == ALTSEP) {
+                *p2 = SEP;
             }
+        }
 #endif
-            minP2 = p2 - 1;
-            lastC = *minP2;
+        minP2 = p2 - 1;
+        lastC = *minP2;
 #ifdef MS_WINDOWS
-            if (lastC != SEP) {
-                minP2++;
-            }
+        if (lastC != SEP) {
+            minP2++;
+        }
+#endif
+    }
+    if (p1[0] == L'.' && SEP_OR_END(&p1[1])) {
+        // Skip leading '.\'
+        lastC = *++p1;
+#ifdef ALTSEP
+        if (lastC == ALTSEP) {
+            lastC = SEP;
+        }
 #endif
+        while (IS_SEP(p1)) {
+            p1++;
         }
     }
 
diff --git a/Python/flowgraph.c b/Python/flowgraph.c
index 83768023a4d870..ff70e47370241a 100644
--- a/Python/flowgraph.c
+++ b/Python/flowgraph.c
@@ -518,21 +518,6 @@ no_redundant_jumps(cfg_builder *g) {
     return true;
 }
 
-static bool
-all_exits_have_lineno(basicblock *entryblock) {
-    for (basicblock *b = entryblock; b != NULL; b = b->b_next) {
-        for (int i = 0; i < b->b_iused; i++) {
-            cfg_instr *instr = &b->b_instr[i];
-            if (instr->i_opcode == RETURN_VALUE) {
-                if (instr->i_loc.lineno < 0) {
-                    assert(0);
-                    return false;
-                }
-            }
-        }
-    }
-    return true;
-}
 #endif
 
 /***** CFG preprocessing (jump targets and exceptions) *****/
@@ -975,13 +960,14 @@ remove_unreachable(basicblock *entryblock) {
     basicblock **sp = stack;
     entryblock->b_predecessors = 1;
     *sp++ = entryblock;
+    entryblock->b_visited = 1;
     while (sp > stack) {
         basicblock *b = *(--sp);
-        b->b_visited = 1;
         if (b->b_next && BB_HAS_FALLTHROUGH(b)) {
             if (!b->b_next->b_visited) {
                 assert(b->b_next->b_predecessors == 0);
                 *sp++ = b->b_next;
+                b->b_next->b_visited = 1;
             }
             b->b_next->b_predecessors++;
         }
@@ -991,8 +977,8 @@ remove_unreachable(basicblock *entryblock) {
             if (is_jump(instr) || is_block_push(instr)) {
                 target = instr->i_target;
                 if (!target->b_visited) {
-                    assert(target->b_predecessors == 0 || target == b->b_next);
                     *sp++ = target;
+                    target->b_visited = 1;
                 }
                 target->b_predecessors++;
             }
@@ -1829,6 +1815,22 @@ optimize_basic_block(PyObject *const_cache, basicblock *bb, PyObject *consts)
 
 static int resolve_line_numbers(cfg_builder *g, int firstlineno);
 
+static int
+remove_redundant_nops_and_jumps(cfg_builder *g)
+{
+    int removed_nops, removed_jumps;
+    do {
+        /* Convergence is guaranteed because the number of
+         * redundant jumps and nops only decreases.
+         */
+        removed_nops = remove_redundant_nops(g);
+        RETURN_IF_ERROR(removed_nops);
+        removed_jumps = remove_redundant_jumps(g);
+        RETURN_IF_ERROR(removed_jumps);
+    } while(removed_nops + removed_jumps > 0);
+    return SUCCESS;
+}
+
 /* Perform optimizations on a control flow graph.
    The consts object should still be in list form to allow new constants
    to be appended.
@@ -1850,17 +1852,7 @@ optimize_cfg(cfg_builder *g, PyObject *consts, PyObject *const_cache, int firstl
     }
     RETURN_IF_ERROR(remove_redundant_nops_and_pairs(g->g_entryblock));
     RETURN_IF_ERROR(remove_unreachable(g->g_entryblock));
-
-    int removed_nops, removed_jumps;
-    do {
-        /* Convergence is guaranteed because the number of
-         * redundant jumps and nops only decreases.
-         */
-        removed_nops = remove_redundant_nops(g);
-        RETURN_IF_ERROR(removed_nops);
-        removed_jumps = remove_redundant_jumps(g);
-        RETURN_IF_ERROR(removed_jumps);
-    } while(removed_nops + removed_jumps > 0);
+    RETURN_IF_ERROR(remove_redundant_nops_and_jumps(g));
     assert(no_redundant_jumps(g));
     return SUCCESS;
 }
@@ -2276,15 +2268,11 @@ push_cold_blocks_to_end(cfg_builder *g) {
             if (!IS_LABEL(b->b_next->b_label)) {
                 b->b_next->b_label.id = next_lbl++;
             }
-            cfg_instr *prev_instr = basicblock_last_instr(b);
-            // b cannot be empty because at the end of an exception handler
-            // there is always a POP_EXCEPT + RERAISE/RETURN
-            assert(prev_instr);
-
             basicblock_addop(explicit_jump, JUMP_NO_INTERRUPT, b->b_next->b_label.id,
-                             prev_instr->i_loc);
+                             NO_LOCATION);
             explicit_jump->b_cold = 1;
             explicit_jump->b_next = b->b_next;
+            explicit_jump->b_predecessors = 1;
             b->b_next = explicit_jump;
 
             /* set target */
@@ -2334,7 +2322,7 @@ push_cold_blocks_to_end(cfg_builder *g) {
     b->b_next = cold_blocks;
 
     if (cold_blocks != NULL) {
-        RETURN_IF_ERROR(remove_redundant_jumps(g));
+        RETURN_IF_ERROR(remove_redundant_nops_and_jumps(g));
     }
     return SUCCESS;
 }
@@ -2359,7 +2347,7 @@ convert_pseudo_ops(cfg_builder *g)
             }
         }
     }
-    return remove_redundant_nops(g);
+    return remove_redundant_nops_and_jumps(g);
 }
 
 static inline bool
@@ -2498,7 +2486,6 @@ _PyCfg_OptimizeCodeUnit(cfg_builder *g, PyObject *consts, PyObject *const_cache,
     RETURN_IF_ERROR(insert_superinstructions(g));
 
     RETURN_IF_ERROR(push_cold_blocks_to_end(g));
-    assert(all_exits_have_lineno(g->g_entryblock));
     RETURN_IF_ERROR(resolve_line_numbers(g, firstlineno));
     return SUCCESS;
 }
diff --git a/Python/future.c b/Python/future.c
index 8d94d515605dcd..e411e659dfce00 100644
--- a/Python/future.c
+++ b/Python/future.c
@@ -41,12 +41,20 @@ future_check_features(_PyFutureFeatures *ff, stmt_ty s, PyObject *filename)
         } else if (strcmp(feature, "braces") == 0) {
             PyErr_SetString(PyExc_SyntaxError,
                             "not a chance");
-            PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
+            PyErr_RangedSyntaxLocationObject(filename,
+                                             name->lineno,
+                                             name->col_offset + 1,
+                                             name->end_lineno,
+                                             name->end_col_offset + 1);
             return 0;
         } else {
             PyErr_Format(PyExc_SyntaxError,
                          UNDEFINED_FUTURE_FEATURE, feature);
-            PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
+            PyErr_RangedSyntaxLocationObject(filename,
+                                             name->lineno,
+                                             name->col_offset + 1,
+                                             name->end_lineno,
+                                             name->end_col_offset + 1);
             return 0;
         }
     }
diff --git a/Python/gc.c b/Python/gc.c
index aa8b216124c36a..8dbcb340d4089d 100644
--- a/Python/gc.c
+++ b/Python/gc.c
@@ -45,7 +45,7 @@ typedef struct _gc_runtime_state GCState;
 // move_legacy_finalizers() removes this flag instead.
 // Between them, unreachable list is not normal list and we can not use
 // most gc_list_* functions for it.
-#define NEXT_MASK_UNREACHABLE  2
+#define NEXT_MASK_UNREACHABLE  (1)
 
 #define AS_GC(op) _Py_AS_GC(op)
 #define FROM_GC(gc) _Py_FROM_GC(gc)
@@ -95,48 +95,9 @@ gc_decref(PyGC_Head *g)
     g->_gc_prev -= 1 << _PyGC_PREV_SHIFT;
 }
 
-static inline int
-gc_old_space(PyGC_Head *g)
-{
-    return g->_gc_next & _PyGC_NEXT_MASK_OLD_SPACE_1;
-}
-
-static inline int
-flip_old_space(int space)
-{
-    assert(space == 0 || space == 1);
-    return space ^ _PyGC_NEXT_MASK_OLD_SPACE_1;
-}
-
-static inline void
-gc_flip_old_space(PyGC_Head *g)
-{
-    g->_gc_next ^= _PyGC_NEXT_MASK_OLD_SPACE_1;
-}
 
-static inline void
-gc_set_old_space(PyGC_Head *g, int space)
-{
-    assert(space == 0 || space == _PyGC_NEXT_MASK_OLD_SPACE_1);
-    g->_gc_next &= ~_PyGC_NEXT_MASK_OLD_SPACE_1;
-    g->_gc_next |= space;
-}
+#define GEN_HEAD(gcstate, n) (&(gcstate)->generations[n].head)
 
-static PyGC_Head *
-GEN_HEAD(GCState *gcstate, int n)
-{
-    assert((gcstate->visited_space & (~1)) == 0);
-    switch(n) {
-        case 0:
-            return &gcstate->young.head;
-        case 1:
-            return &gcstate->old[gcstate->visited_space].head;
-        case 2:
-            return &gcstate->old[gcstate->visited_space^1].head;
-        default:
-            Py_UNREACHABLE();
-    }
-}
 
 static GCState *
 get_gc_state(void)
@@ -155,12 +116,11 @@ _PyGC_InitState(GCState *gcstate)
         GEN.head._gc_prev = (uintptr_t)&GEN.head; \
     } while (0)
 
-    assert(gcstate->young.count == 0);
-    assert(gcstate->old[0].count == 0);
-    assert(gcstate->old[1].count == 0);
-    INIT_HEAD(gcstate->young);
-    INIT_HEAD(gcstate->old[0]);
-    INIT_HEAD(gcstate->old[1]);
+    for (int i = 0; i < NUM_GENERATIONS; i++) {
+        assert(gcstate->generations[i].count == 0);
+        INIT_HEAD(gcstate->generations[i]);
+    };
+    gcstate->generation0 = GEN_HEAD(gcstate, 0);
     INIT_HEAD(gcstate->permanent_generation);
 
 #undef INIT_HEAD
@@ -181,7 +141,6 @@ _PyGC_Init(PyInterpreterState *interp)
     if (gcstate->callbacks == NULL) {
         return _PyStatus_NO_MEMORY();
     }
-    gcstate->heap_size = 0;
 
     return _PyStatus_OK();
 }
@@ -259,7 +218,6 @@ gc_list_is_empty(PyGC_Head *list)
 static inline void
 gc_list_append(PyGC_Head *node, PyGC_Head *list)
 {
-    assert((list->_gc_prev & ~_PyGC_PREV_MASK) == 0);
     PyGC_Head *last = (PyGC_Head *)list->_gc_prev;
 
     // last <-> node
@@ -317,8 +275,6 @@ gc_list_merge(PyGC_Head *from, PyGC_Head *to)
         PyGC_Head *from_tail = GC_PREV(from);
         assert(from_head != from);
         assert(from_tail != from);
-        assert(gc_list_is_empty(to) ||
-            gc_old_space(to_tail) == gc_old_space(from_tail));
 
         _PyGCHead_SET_NEXT(to_tail, from_head);
         _PyGCHead_SET_PREV(from_head, to_tail);
@@ -387,8 +343,8 @@ enum flagstates {collecting_clear_unreachable_clear,
 static void
 validate_list(PyGC_Head *head, enum flagstates flags)
 {
-    assert((head->_gc_prev & ~_PyGC_PREV_MASK) == 0);
-    assert((head->_gc_next & ~_PyGC_PREV_MASK) == 0);
+    assert((head->_gc_prev & PREV_MASK_COLLECTING) == 0);
+    assert((head->_gc_next & NEXT_MASK_UNREACHABLE) == 0);
     uintptr_t prev_value = 0, next_value = 0;
     switch (flags) {
         case collecting_clear_unreachable_clear:
@@ -410,7 +366,7 @@ validate_list(PyGC_Head *head, enum flagstates flags)
     PyGC_Head *gc = GC_NEXT(head);
     while (gc != head) {
         PyGC_Head *trueprev = GC_PREV(gc);
-        PyGC_Head *truenext = GC_NEXT(gc);
+        PyGC_Head *truenext = (PyGC_Head *)(gc->_gc_next  & ~NEXT_MASK_UNREACHABLE);
         assert(truenext != NULL);
         assert(trueprev == prev);
         assert((gc->_gc_prev & PREV_MASK_COLLECTING) == prev_value);
@@ -420,54 +376,8 @@ validate_list(PyGC_Head *head, enum flagstates flags)
     }
     assert(prev == GC_PREV(head));
 }
-
-static void
-validate_old(GCState *gcstate)
-{
-    for (int space = 0; space < 2; space++) {
-        PyGC_Head *head = &gcstate->old[space].head;
-        PyGC_Head *gc = GC_NEXT(head);
-        while (gc != head) {
-            PyGC_Head *next = GC_NEXT(gc);
-            assert(gc_old_space(gc) == space);
-            gc = next;
-        }
-    }
-}
-
-static void
-validate_consistent_old_space(PyGC_Head *head)
-{
-    PyGC_Head *prev = head;
-    PyGC_Head *gc = GC_NEXT(head);
-    if (gc == head) {
-        return;
-    }
-    int old_space = gc_old_space(gc);
-    while (gc != head) {
-        PyGC_Head *truenext = GC_NEXT(gc);
-        assert(truenext != NULL);
-        assert(gc_old_space(gc) == old_space);
-        prev = gc;
-        gc = truenext;
-    }
-    assert(prev == GC_PREV(head));
-}
-
-static void
-gc_list_validate_space(PyGC_Head *head, int space) {
-    PyGC_Head *gc = GC_NEXT(head);
-    while (gc != head) {
-        assert(gc_old_space(gc) == space);
-        gc = GC_NEXT(gc);
-    }
-}
-
 #else
 #define validate_list(x, y) do{}while(0)
-#define validate_old(g) do{}while(0)
-#define validate_consistent_old_space(l) do{}while(0)
-#define gc_list_validate_space(l, s) do{}while(0)
 #endif
 
 /*** end of list stuff ***/
@@ -485,6 +395,10 @@ update_refs(PyGC_Head *containers)
     while (gc != containers) {
         next = GC_NEXT(gc);
         PyObject *op = FROM_GC(gc);
+        /* Move any object that might have become immortal to the
+         * permanent generation as the reference count is not accurately
+         * reflecting the actual number of live references to this object
+         */
         if (_Py_IsImmortal(op)) {
            gc_list_move(gc, &get_gc_state()->permanent_generation.head);
            gc = next;
@@ -587,13 +501,12 @@ visit_reachable(PyObject *op, void *arg)
         // Manually unlink gc from unreachable list because the list functions
         // don't work right in the presence of NEXT_MASK_UNREACHABLE flags.
         PyGC_Head *prev = GC_PREV(gc);
-        PyGC_Head *next = GC_NEXT(gc);
+        PyGC_Head *next = (PyGC_Head*)(gc->_gc_next & ~NEXT_MASK_UNREACHABLE);
         _PyObject_ASSERT(FROM_GC(prev),
                          prev->_gc_next & NEXT_MASK_UNREACHABLE);
         _PyObject_ASSERT(FROM_GC(next),
                          next->_gc_next & NEXT_MASK_UNREACHABLE);
-        prev->_gc_next = gc->_gc_next;  // copy flag bits
-        gc->_gc_next &= ~NEXT_MASK_UNREACHABLE;
+        prev->_gc_next = gc->_gc_next;  // copy NEXT_MASK_UNREACHABLE
         _PyGCHead_SET_PREV(next, prev);
 
         gc_list_append(gc, reachable);
@@ -645,9 +558,6 @@ move_unreachable(PyGC_Head *young, PyGC_Head *unreachable)
      * or to the right have been scanned yet.
      */
 
-    validate_consistent_old_space(young);
-    /* Record which old space we are in, and set NEXT_MASK_UNREACHABLE bit for convenience */
-    uintptr_t flags = NEXT_MASK_UNREACHABLE | (gc->_gc_next & _PyGC_NEXT_MASK_OLD_SPACE_1);
     while (gc != young) {
         if (gc_get_refs(gc)) {
             /* gc is definitely reachable from outside the
@@ -693,18 +603,17 @@ move_unreachable(PyGC_Head *young, PyGC_Head *unreachable)
             // But this may pollute the unreachable list head's 'next' pointer
             // too. That's semantically senseless but expedient here - the
             // damage is repaired when this function ends.
-            last->_gc_next = flags | (uintptr_t)gc;
+            last->_gc_next = (NEXT_MASK_UNREACHABLE | (uintptr_t)gc);
             _PyGCHead_SET_PREV(gc, last);
-            gc->_gc_next = flags | (uintptr_t)unreachable;
+            gc->_gc_next = (NEXT_MASK_UNREACHABLE | (uintptr_t)unreachable);
             unreachable->_gc_prev = (uintptr_t)gc;
         }
-        gc = _PyGCHead_NEXT(prev);
+        gc = (PyGC_Head*)prev->_gc_next;
     }
     // young->_gc_prev must be last element remained in the list.
     young->_gc_prev = (uintptr_t)prev;
-    young->_gc_next &= _PyGC_PREV_MASK;
     // don't let the pollution of the list head's next pointer leak
-    unreachable->_gc_next &= _PyGC_PREV_MASK;
+    unreachable->_gc_next &= ~NEXT_MASK_UNREACHABLE;
 }
 
 static void
@@ -763,8 +672,8 @@ move_legacy_finalizers(PyGC_Head *unreachable, PyGC_Head *finalizers)
         PyObject *op = FROM_GC(gc);
 
         _PyObject_ASSERT(op, gc->_gc_next & NEXT_MASK_UNREACHABLE);
-        next = GC_NEXT(gc);
         gc->_gc_next &= ~NEXT_MASK_UNREACHABLE;
+        next = (PyGC_Head*)gc->_gc_next;
 
         if (has_legacy_finalizer(op)) {
             gc_clear_collecting(gc);
@@ -787,8 +696,8 @@ clear_unreachable_mask(PyGC_Head *unreachable)
     PyGC_Head *gc, *next;
     for (gc = GC_NEXT(unreachable); gc != unreachable; gc = next) {
         _PyObject_ASSERT((PyObject*)FROM_GC(gc), gc->_gc_next & NEXT_MASK_UNREACHABLE);
-        next = GC_NEXT(gc);
         gc->_gc_next &= ~NEXT_MASK_UNREACHABLE;
+        next = (PyGC_Head*)gc->_gc_next;
     }
     validate_list(unreachable, collecting_set_unreachable_clear);
 }
@@ -958,7 +867,6 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old)
     /* Invoke the callbacks we decided to honor.  It's safe to invoke them
      * because they can't reference unreachable objects.
      */
-    int visited_space = get_gc_state()->visited_space;
     while (! gc_list_is_empty(&wrcb_to_call)) {
         PyObject *temp;
         PyObject *callback;
@@ -993,7 +901,6 @@ handle_weakrefs(PyGC_Head *unreachable, PyGC_Head *old)
         Py_DECREF(op);
         if (wrcb_to_call._gc_next == (uintptr_t)gc) {
             /* object is still alive -- move it */
-            gc_set_old_space(gc, visited_space);
             gc_list_move(gc, old);
         }
         else {
@@ -1122,6 +1029,25 @@ delete_garbage(PyThreadState *tstate, GCState *gcstate,
 }
 
 
+// Show stats for objects in each generations
+static void
+show_stats_each_generations(GCState *gcstate)
+{
+    char buf[100];
+    size_t pos = 0;
+
+    for (int i = 0; i < NUM_GENERATIONS && pos < sizeof(buf); i++) {
+        pos += PyOS_snprintf(buf+pos, sizeof(buf)-pos,
+                             " %zd",
+                             gc_list_size(GEN_HEAD(gcstate, i)));
+    }
+
+    PySys_FormatStderr(
+        "gc: objects in each generation:%s\n"
+        "gc: objects in permanent generation: %zd\n",
+        buf, gc_list_size(&gcstate->permanent_generation.head));
+}
+
 /* Deduce which objects among "base" are unreachable from outside the list
    and move them to 'unreachable'. The process consist in the following steps:
 
@@ -1195,6 +1121,7 @@ deduce_unreachable(PyGC_Head *base, PyGC_Head *unreachable) {
      * the reachable objects instead.  But this is a one-time cost, probably not
      * worth complicating the code to speed just a little.
      */
+    gc_list_init(unreachable);
     move_unreachable(base, unreachable);  // gc_prev is pointer again
     validate_list(base, collecting_clear_unreachable_clear);
     validate_list(unreachable, collecting_set_unreachable_set);
@@ -1233,292 +1160,220 @@ handle_resurrected_objects(PyGC_Head *unreachable, PyGC_Head* still_unreachable,
 }
 
 
-#define UNTRACK_TUPLES 1
-#define UNTRACK_DICTS 2
-
-static void
-gc_collect_region(PyThreadState *tstate,
-                  PyGC_Head *from,
-                  PyGC_Head *to,
-                  int untrack,
-                  struct gc_collection_stats *stats);
-
-static inline Py_ssize_t
-gc_list_set_space(PyGC_Head *list, int space)
-{
-    Py_ssize_t size = 0;
-    PyGC_Head *gc;
-    for (gc = GC_NEXT(list); gc != list; gc = GC_NEXT(gc)) {
-        gc_set_old_space(gc, space);
-        size++;
-    }
-    return size;
-}
-
-/* Making progress in the incremental collector
- * In order to eventually collect all cycles
- * the incremental collector must progress through the old
- * space faster than objects are added to the old space.
- *
- * Each young or incremental collection adds a numebr of
- * objects, S (for survivors) to the old space, and
- * incremental collectors scan I objects from the old space.
- * I > S must be true. We also want I > S * N to be where
- * N > 1. Higher values of N mean that the old space is
- * scanned more rapidly.
- * The default incremental threshold of 10 translates to
- * N == 1.4 (1 + 4/threshold)
+/* Invoke progress callbacks to notify clients that garbage collection
+ * is starting or stopping
  */
-
-/* Divide by 10, so that the default incremental threshold of 10
- * scans objects at 1% of the heap size */
-#define SCAN_RATE_DIVISOR 10
-
 static void
-add_stats(GCState *gcstate, int gen, struct gc_collection_stats *stats)
+invoke_gc_callback(PyThreadState *tstate, const char *phase,
+                   int generation, Py_ssize_t collected,
+                   Py_ssize_t uncollectable)
 {
-    gcstate->generation_stats[gen].collected += stats->collected;
-    gcstate->generation_stats[gen].uncollectable += stats->uncollectable;
-    gcstate->generation_stats[gen].collections += 1;
-}
+    assert(!_PyErr_Occurred(tstate));
 
-static void
-gc_collect_young(PyThreadState *tstate,
-                 struct gc_collection_stats *stats)
-{
+    /* we may get called very early */
     GCState *gcstate = &tstate->interp->gc;
-    PyGC_Head *young = &gcstate->young.head;
-    PyGC_Head *visited = &gcstate->old[gcstate->visited_space].head;
-#ifdef Py_STATS
-    {
-        Py_ssize_t count = 0;
-        PyGC_Head *gc;
-        for (gc = GC_NEXT(young); gc != young; gc = GC_NEXT(gc)) {
-            count++;
-        }
+    if (gcstate->callbacks == NULL) {
+        return;
     }
-#endif
 
-    PyGC_Head survivors;
-    gc_list_init(&survivors);
-    gc_collect_region(tstate, young, &survivors, UNTRACK_TUPLES, stats);
-    Py_ssize_t survivor_count = 0;
-    if (gcstate->visited_space) {
-        /* objects in visited space have bit set, so we set it here */
-        survivor_count = gc_list_set_space(&survivors, 1);
-    }
-    else {
-        PyGC_Head *gc;
-        for (gc = GC_NEXT(&survivors); gc != &survivors; gc = GC_NEXT(gc)) {
-#ifdef GC_DEBUG
-            assert(gc_old_space(gc) == 0);
-#endif
-            survivor_count++;
+    /* The local variable cannot be rebound, check it for sanity */
+    assert(PyList_CheckExact(gcstate->callbacks));
+    PyObject *info = NULL;
+    if (PyList_GET_SIZE(gcstate->callbacks) != 0) {
+        info = Py_BuildValue("{sisnsn}",
+            "generation", generation,
+            "collected", collected,
+            "uncollectable", uncollectable);
+        if (info == NULL) {
+            PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
+            return;
         }
     }
-    (void)survivor_count;  // Silence compiler warning
-    gc_list_merge(&survivors, visited);
-    validate_old(gcstate);
-    gcstate->young.count = 0;
-    gcstate->old[gcstate->visited_space].count++;
-    Py_ssize_t scale_factor = gcstate->old[0].threshold;
-    if (scale_factor < 1) {
-        scale_factor = 1;
-    }
-    gcstate->work_to_do += gcstate->heap_size / SCAN_RATE_DIVISOR / scale_factor;
-    add_stats(gcstate, 0, stats);
-}
-
-#ifndef NDEBUG
-static inline int
-IS_IN_VISITED(PyGC_Head *gc, int visited_space)
-{
-    assert(visited_space == 0 || flip_old_space(visited_space) == 0);
-    return gc_old_space(gc) == visited_space;
-}
-#endif
-
-struct container_and_flag {
-    PyGC_Head *container;
-    int visited_space;
-    uintptr_t size;
-};
 
-/* A traversal callback for adding to container) */
-static int
-visit_add_to_container(PyObject *op, void *arg)
-{
-    OBJECT_STAT_INC(object_visits);
-    struct container_and_flag *cf = (struct container_and_flag *)arg;
-    int visited = cf->visited_space;
-    assert(visited == get_gc_state()->visited_space);
-    if (!_Py_IsImmortal(op) && _PyObject_IS_GC(op)) {
-        PyGC_Head *gc = AS_GC(op);
-        if (_PyObject_GC_IS_TRACKED(op) &&
-            gc_old_space(gc) != visited) {
-            gc_flip_old_space(gc);
-            gc_list_move(gc, cf->container);
-            cf->size++;
-        }
+    PyObject *phase_obj = PyUnicode_FromString(phase);
+    if (phase_obj == NULL) {
+        Py_XDECREF(info);
+        PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
+        return;
     }
-    return 0;
-}
 
-static uintptr_t
-expand_region_transitively_reachable(PyGC_Head *container, PyGC_Head *gc, GCState *gcstate)
-{
-    validate_list(container, collecting_clear_unreachable_clear);
-    struct container_and_flag arg = {
-        .container = container,
-        .visited_space = gcstate->visited_space,
-        .size = 0
-    };
-    assert(GC_NEXT(gc) == container);
-    while (gc != container) {
-        /* Survivors will be moved to visited space, so they should
-         * have been marked as visited */
-        assert(IS_IN_VISITED(gc, gcstate->visited_space));
-        PyObject *op = FROM_GC(gc);
-        if (_Py_IsImmortal(op)) {
-            PyGC_Head *next = GC_NEXT(gc);
-            gc_list_move(gc, &get_gc_state()->permanent_generation.head);
-            gc = next;
-            continue;
+    PyObject *stack[] = {phase_obj, info};
+    for (Py_ssize_t i=0; i<PyList_GET_SIZE(gcstate->callbacks); i++) {
+        PyObject *r, *cb = PyList_GET_ITEM(gcstate->callbacks, i);
+        Py_INCREF(cb); /* make sure cb doesn't go away */
+        r = PyObject_Vectorcall(cb, stack, 2, NULL);
+        if (r == NULL) {
+            PyErr_WriteUnraisable(cb);
         }
-        traverseproc traverse = Py_TYPE(op)->tp_traverse;
-        (void) traverse(op,
-                        visit_add_to_container,
-                        &arg);
-        gc = GC_NEXT(gc);
+        else {
+            Py_DECREF(r);
+        }
+        Py_DECREF(cb);
     }
-    return arg.size;
+    Py_DECREF(phase_obj);
+    Py_XDECREF(info);
+    assert(!_PyErr_Occurred(tstate));
 }
 
-/* Do bookkeeping for a completed GC cycle */
-static void
-completed_cycle(GCState *gcstate)
-{
-#ifdef Py_DEBUG
-    PyGC_Head *not_visited = &gcstate->old[gcstate->visited_space^1].head;
-    assert(gc_list_is_empty(not_visited));
-#endif
-    gcstate->visited_space = flip_old_space(gcstate->visited_space);
-    /* Make sure all young objects have old space bit set correctly */
-    PyGC_Head *young = &gcstate->young.head;
-    PyGC_Head *gc = GC_NEXT(young);
-    while (gc != young) {
-        PyGC_Head *next = GC_NEXT(gc);
-        gc_set_old_space(gc, gcstate->visited_space);
-        gc = next;
-    }
-    gcstate->work_to_do = 0;
-}
 
-static void
-gc_collect_increment(PyThreadState *tstate, struct gc_collection_stats *stats)
-{
-    GCState *gcstate = &tstate->interp->gc;
-    PyGC_Head *not_visited = &gcstate->old[gcstate->visited_space^1].head;
-    PyGC_Head *visited = &gcstate->old[gcstate->visited_space].head;
-    PyGC_Head increment;
-    gc_list_init(&increment);
-    Py_ssize_t scale_factor = gcstate->old[0].threshold;
-    if (scale_factor < 1) {
-        scale_factor = 1;
-    }
-    gc_list_merge(&gcstate->young.head, &increment);
-    gcstate->young.count = 0;
-    gc_list_validate_space(&increment, gcstate->visited_space);
-    Py_ssize_t increment_size = 0;
-    while (increment_size < gcstate->work_to_do) {
-        if (gc_list_is_empty(not_visited)) {
-            break;
+/* Find the oldest generation (highest numbered) where the count
+ * exceeds the threshold.  Objects in the that generation and
+ * generations younger than it will be collected. */
+static int
+gc_select_generation(GCState *gcstate)
+{
+    for (int i = NUM_GENERATIONS-1; i >= 0; i--) {
+        if (gcstate->generations[i].count > gcstate->generations[i].threshold) {
+            /* Avoid quadratic performance degradation in number
+               of tracked objects (see also issue #4074):
+
+               To limit the cost of garbage collection, there are two strategies;
+                 - make each collection faster, e.g. by scanning fewer objects
+                 - do less collections
+               This heuristic is about the latter strategy.
+
+               In addition to the various configurable thresholds, we only trigger a
+               full collection if the ratio
+
+                long_lived_pending / long_lived_total
+
+               is above a given value (hardwired to 25%).
+
+               The reason is that, while "non-full" collections (i.e., collections of
+               the young and middle generations) will always examine roughly the same
+               number of objects -- determined by the aforementioned thresholds --,
+               the cost of a full collection is proportional to the total number of
+               long-lived objects, which is virtually unbounded.
+
+               Indeed, it has been remarked that doing a full collection every
+               <constant number> of object creations entails a dramatic performance
+               degradation in workloads which consist in creating and storing lots of
+               long-lived objects (e.g. building a large list of GC-tracked objects would
+               show quadratic performance, instead of linear as expected: see issue #4074).
+
+               Using the above ratio, instead, yields amortized linear performance in
+               the total number of objects (the effect of which can be summarized
+               thusly: "each full garbage collection is more and more costly as the
+               number of objects grows, but we do fewer and fewer of them").
+
+               This heuristic was suggested by Martin von Löwis on python-dev in
+               June 2008. His original analysis and proposal can be found at:
+               http://mail.python.org/pipermail/python-dev/2008-June/080579.html
+            */
+            if (i == NUM_GENERATIONS - 1
+                && gcstate->long_lived_pending < gcstate->long_lived_total / 4)
+            {
+                continue;
+            }
+            return i;
         }
-        PyGC_Head *gc = _PyGCHead_NEXT(not_visited);
-        gc_list_move(gc, &increment);
-        increment_size++;
-        gc_set_old_space(gc, gcstate->visited_space);
-        increment_size += expand_region_transitively_reachable(&increment, gc, gcstate);
-    }
-    gc_list_validate_space(&increment, gcstate->visited_space);
-    PyGC_Head survivors;
-    gc_list_init(&survivors);
-    gc_collect_region(tstate, &increment, &survivors, UNTRACK_TUPLES, stats);
-    gc_list_validate_space(&survivors, gcstate->visited_space);
-    gc_list_merge(&survivors, visited);
-    assert(gc_list_is_empty(&increment));
-    gcstate->work_to_do += gcstate->heap_size / SCAN_RATE_DIVISOR / scale_factor;
-    gcstate->work_to_do -= increment_size;
-
-    validate_old(gcstate);
-    add_stats(gcstate, 1, stats);
-    if (gc_list_is_empty(not_visited)) {
-        completed_cycle(gcstate);
     }
+    return -1;
 }
 
 
-static void
-gc_collect_full(PyThreadState *tstate,
-                struct gc_collection_stats *stats)
-{
-    GCState *gcstate = &tstate->interp->gc;
-    validate_old(gcstate);
-    PyGC_Head *young = &gcstate->young.head;
-    PyGC_Head *pending = &gcstate->old[gcstate->visited_space^1].head;
-    PyGC_Head *visited = &gcstate->old[gcstate->visited_space].head;
-    /* merge all generations into visited */
-    gc_list_validate_space(young, gcstate->visited_space);
-    gc_list_set_space(pending, gcstate->visited_space);
-    gc_list_merge(young, pending);
-    gcstate->young.count = 0;
-    gc_list_merge(pending, visited);
-
-    gc_collect_region(tstate, visited, visited,
-                      UNTRACK_TUPLES | UNTRACK_DICTS,
-                      stats);
-    gcstate->young.count = 0;
-    gcstate->old[0].count = 0;
-    gcstate->old[1].count = 0;
-
-    gcstate->work_to_do = - gcstate->young.threshold * 2;
-    _PyGC_ClearAllFreeLists(tstate->interp);
-    validate_old(gcstate);
-    add_stats(gcstate, 2, stats);
-}
-
-/* This is the main function. Read this to understand how the
+/* This is the main function.  Read this to understand how the
  * collection process works. */
-static void
-gc_collect_region(PyThreadState *tstate,
-                  PyGC_Head *from,
-                  PyGC_Head *to,
-                  int untrack,
-                  struct gc_collection_stats *stats)
+static Py_ssize_t
+gc_collect_main(PyThreadState *tstate, int generation, _PyGC_Reason reason)
 {
+    int i;
+    Py_ssize_t m = 0; /* # objects collected */
+    Py_ssize_t n = 0; /* # unreachable objects that couldn't be collected */
+    PyGC_Head *young; /* the generation we are examining */
+    PyGC_Head *old; /* next older generation */
     PyGC_Head unreachable; /* non-problematic unreachable trash */
     PyGC_Head finalizers;  /* objects with, & reachable from, __del__ */
-    PyGC_Head *gc; /* initialize to prevent a compiler warning */
+    PyGC_Head *gc;
+    PyTime_t t1 = 0;   /* initialize to prevent a compiler warning */
     GCState *gcstate = &tstate->interp->gc;
 
+    // gc_collect_main() must not be called before _PyGC_Init
+    // or after _PyGC_Fini()
     assert(gcstate->garbage != NULL);
     assert(!_PyErr_Occurred(tstate));
 
-    gc_list_init(&unreachable);
-    deduce_unreachable(from, &unreachable);
-    validate_consistent_old_space(from);
-    if (untrack & UNTRACK_TUPLES) {
-        untrack_tuples(from);
+    int expected = 0;
+    if (!_Py_atomic_compare_exchange_int(&gcstate->collecting, &expected, 1)) {
+        // Don't start a garbage collection if one is already in progress.
+        return 0;
+    }
+
+    if (generation == GENERATION_AUTO) {
+        // Select the oldest generation that needs collecting. We will collect
+        // objects from that generation and all generations younger than it.
+        generation = gc_select_generation(gcstate);
+        if (generation < 0) {
+            // No generation needs to be collected.
+            _Py_atomic_store_int(&gcstate->collecting, 0);
+            return 0;
+        }
+    }
+
+    assert(generation >= 0 && generation < NUM_GENERATIONS);
+
+#ifdef Py_STATS
+    if (_Py_stats) {
+        _Py_stats->object_stats.object_visits = 0;
+    }
+#endif
+    GC_STAT_ADD(generation, collections, 1);
+
+    if (reason != _Py_GC_REASON_SHUTDOWN) {
+        invoke_gc_callback(tstate, "start", generation, 0, 0);
+    }
+
+    if (gcstate->debug & _PyGC_DEBUG_STATS) {
+        PySys_WriteStderr("gc: collecting generation %d...\n", generation);
+        show_stats_each_generations(gcstate);
+        // ignore error: don't interrupt the GC if reading the clock fails
+        (void)PyTime_PerfCounterRaw(&t1);
+    }
+
+    if (PyDTrace_GC_START_ENABLED()) {
+        PyDTrace_GC_START(generation);
+    }
+
+    /* update collection and allocation counters */
+    if (generation+1 < NUM_GENERATIONS) {
+        gcstate->generations[generation+1].count += 1;
     }
-    if (untrack & UNTRACK_DICTS) {
-        untrack_dicts(from);
+    for (i = 0; i <= generation; i++) {
+        gcstate->generations[i].count = 0;
     }
-    validate_consistent_old_space(to);
-    if (from != to) {
-        gc_list_merge(from, to);
+
+    /* merge younger generations with one we are currently collecting */
+    for (i = 0; i < generation; i++) {
+        gc_list_merge(GEN_HEAD(gcstate, i), GEN_HEAD(gcstate, generation));
+    }
+
+    /* handy references */
+    young = GEN_HEAD(gcstate, generation);
+    if (generation < NUM_GENERATIONS-1) {
+        old = GEN_HEAD(gcstate, generation+1);
+    }
+    else {
+        old = young;
     }
-    validate_consistent_old_space(to);
+    validate_list(old, collecting_clear_unreachable_clear);
+
+    deduce_unreachable(young, &unreachable);
+
+    untrack_tuples(young);
     /* Move reachable objects to next generation. */
+    if (young != old) {
+        if (generation == NUM_GENERATIONS - 2) {
+            gcstate->long_lived_pending += gc_list_size(young);
+        }
+        gc_list_merge(young, old);
+    }
+    else {
+        /* We only un-track dicts in full collections, to avoid quadratic
+           dict build-up. See issue #14775. */
+        untrack_dicts(young);
+        gcstate->long_lived_pending = 0;
+        gcstate->long_lived_total = gc_list_size(young);
+    }
 
     /* All objects in unreachable are trash, but objects reachable from
      * legacy finalizers (e.g. tp_del) can't safely be deleted.
@@ -1532,8 +1387,10 @@ gc_collect_region(PyThreadState *tstate,
      * and we move those into the finalizers list too.
      */
     move_legacy_finalizer_reachable(&finalizers);
+
     validate_list(&finalizers, collecting_clear_unreachable_clear);
     validate_list(&unreachable, collecting_set_unreachable_clear);
+
     /* Print debugging information. */
     if (gcstate->debug & _PyGC_DEBUG_COLLECTABLE) {
         for (gc = GC_NEXT(&unreachable); gc != &unreachable; gc = GC_NEXT(gc)) {
@@ -1542,101 +1399,91 @@ gc_collect_region(PyThreadState *tstate,
     }
 
     /* Clear weakrefs and invoke callbacks as necessary. */
-    stats->collected += handle_weakrefs(&unreachable, to);
-    gc_list_validate_space(to, gcstate->visited_space);
-    validate_list(to, collecting_clear_unreachable_clear);
+    m += handle_weakrefs(&unreachable, old);
+
+    validate_list(old, collecting_clear_unreachable_clear);
     validate_list(&unreachable, collecting_set_unreachable_clear);
 
     /* Call tp_finalize on objects which have one. */
     finalize_garbage(tstate, &unreachable);
+
     /* Handle any objects that may have resurrected after the call
      * to 'finalize_garbage' and continue the collection with the
      * objects that are still unreachable */
     PyGC_Head final_unreachable;
-    gc_list_init(&final_unreachable);
-    handle_resurrected_objects(&unreachable, &final_unreachable, to);
+    handle_resurrected_objects(&unreachable, &final_unreachable, old);
 
     /* Call tp_clear on objects in the final_unreachable set.  This will cause
     * the reference cycles to be broken.  It may also cause some objects
     * in finalizers to be freed.
     */
-    stats->collected += gc_list_size(&final_unreachable);
-    delete_garbage(tstate, gcstate, &final_unreachable, to);
+    m += gc_list_size(&final_unreachable);
+    delete_garbage(tstate, gcstate, &final_unreachable, old);
 
     /* Collect statistics on uncollectable objects found and print
      * debugging information. */
-    Py_ssize_t n = 0;
     for (gc = GC_NEXT(&finalizers); gc != &finalizers; gc = GC_NEXT(gc)) {
         n++;
-        if (gcstate->debug & _PyGC_DEBUG_COLLECTABLE)
+        if (gcstate->debug & _PyGC_DEBUG_UNCOLLECTABLE)
             debug_cycle("uncollectable", FROM_GC(gc));
     }
-    stats->uncollectable = n;
+    if (gcstate->debug & _PyGC_DEBUG_STATS) {
+        PyTime_t t2;
+        (void)PyTime_PerfCounterRaw(&t2);
+        double d = PyTime_AsSecondsDouble(t2 - t1);
+        PySys_WriteStderr(
+            "gc: done, %zd unreachable, %zd uncollectable, %.4fs elapsed\n",
+            n+m, n, d);
+    }
+
     /* Append instances in the uncollectable set to a Python
      * reachable list of garbage.  The programmer has to deal with
      * this if they insist on creating this type of structure.
      */
-    handle_legacy_finalizers(tstate, gcstate, &finalizers, to);
-    gc_list_validate_space(to, gcstate->visited_space);
-    validate_list(to, collecting_clear_unreachable_clear);
-}
+    handle_legacy_finalizers(tstate, gcstate, &finalizers, old);
+    validate_list(old, collecting_clear_unreachable_clear);
 
-/* Invoke progress callbacks to notify clients that garbage collection
- * is starting or stopping
- */
-static void
-do_gc_callback(GCState *gcstate, const char *phase,
-                   int generation, struct gc_collection_stats *stats)
-{
-    assert(!PyErr_Occurred());
+    /* Clear free list only during the collection of the highest
+     * generation */
+    if (generation == NUM_GENERATIONS-1) {
+        _PyGC_ClearAllFreeLists(tstate->interp);
+    }
 
-    /* The local variable cannot be rebound, check it for sanity */
-    assert(PyList_CheckExact(gcstate->callbacks));
-    PyObject *info = NULL;
-    if (PyList_GET_SIZE(gcstate->callbacks) != 0) {
-        info = Py_BuildValue("{sisnsn}",
-            "generation", generation,
-            "collected", stats->collected,
-            "uncollectable", stats->uncollectable);
-        if (info == NULL) {
-            PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
-            return;
+    if (_PyErr_Occurred(tstate)) {
+        if (reason == _Py_GC_REASON_SHUTDOWN) {
+            _PyErr_Clear(tstate);
+        }
+        else {
+            PyErr_FormatUnraisable("Exception ignored in garbage collection");
         }
     }
 
-    PyObject *phase_obj = PyUnicode_FromString(phase);
-    if (phase_obj == NULL) {
-        Py_XDECREF(info);
-        PyErr_FormatUnraisable("Exception ignored on invoking gc callbacks");
-        return;
+    /* Update stats */
+    struct gc_generation_stats *stats = &gcstate->generation_stats[generation];
+    stats->collections++;
+    stats->collected += m;
+    stats->uncollectable += n;
+
+    GC_STAT_ADD(generation, objects_collected, m);
+#ifdef Py_STATS
+    if (_Py_stats) {
+        GC_STAT_ADD(generation, object_visits,
+            _Py_stats->object_stats.object_visits);
+        _Py_stats->object_stats.object_visits = 0;
     }
+#endif
 
-    PyObject *stack[] = {phase_obj, info};
-    for (Py_ssize_t i=0; i<PyList_GET_SIZE(gcstate->callbacks); i++) {
-        PyObject *r, *cb = PyList_GET_ITEM(gcstate->callbacks, i);
-        Py_INCREF(cb); /* make sure cb doesn't go away */
-        r = PyObject_Vectorcall(cb, stack, 2, NULL);
-        if (r == NULL) {
-            PyErr_WriteUnraisable(cb);
-        }
-        else {
-            Py_DECREF(r);
-        }
-        Py_DECREF(cb);
+    if (PyDTrace_GC_DONE_ENABLED()) {
+        PyDTrace_GC_DONE(n + m);
     }
-    Py_DECREF(phase_obj);
-    Py_XDECREF(info);
-    assert(!PyErr_Occurred());
-}
 
-static void
-invoke_gc_callback(GCState *gcstate, const char *phase,
-                   int generation, struct gc_collection_stats *stats)
-{
-    if (gcstate->callbacks == NULL) {
-        return;
+    if (reason != _Py_GC_REASON_SHUTDOWN) {
+        invoke_gc_callback(tstate, "stop", generation, m, n);
     }
-    do_gc_callback(gcstate, phase, generation, stats);
+
+    assert(!_PyErr_Occurred(tstate));
+    _Py_atomic_store_int(&gcstate->collecting, 0);
+    return n + m;
 }
 
 static int
@@ -1726,20 +1573,10 @@ void
 _PyGC_Freeze(PyInterpreterState *interp)
 {
     GCState *gcstate = &interp->gc;
-    /* The permanent_generation has its old space bit set to zero */
-    if (gcstate->visited_space) {
-        gc_list_set_space(&gcstate->young.head, 0);
-    }
-    gc_list_merge(&gcstate->young.head, &gcstate->permanent_generation.head);
-    gcstate->young.count = 0;
-    PyGC_Head*old0 = &gcstate->old[0].head;
-    PyGC_Head*old1 = &gcstate->old[1].head;
-    gc_list_merge(old0, &gcstate->permanent_generation.head);
-    gcstate->old[0].count = 0;
-    gc_list_set_space(old1, 0);
-    gc_list_merge(old1, &gcstate->permanent_generation.head);
-    gcstate->old[1].count = 0;
-    validate_old(gcstate);
+    for (int i = 0; i < NUM_GENERATIONS; ++i) {
+        gc_list_merge(GEN_HEAD(gcstate, i), &gcstate->permanent_generation.head);
+        gcstate->generations[i].count = 0;
+    }
 }
 
 void
@@ -1747,8 +1584,7 @@ _PyGC_Unfreeze(PyInterpreterState *interp)
 {
     GCState *gcstate = &interp->gc;
     gc_list_merge(&gcstate->permanent_generation.head,
-                  &gcstate->old[0].head);
-    validate_old(gcstate);
+                  GEN_HEAD(gcstate, NUM_GENERATIONS-1));
 }
 
 Py_ssize_t
@@ -1784,63 +1620,29 @@ PyGC_IsEnabled(void)
     return gcstate->enabled;
 }
 
+/* Public API to invoke gc.collect() from C */
 Py_ssize_t
-_PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
+PyGC_Collect(void)
 {
+    PyThreadState *tstate = _PyThreadState_GET();
     GCState *gcstate = &tstate->interp->gc;
 
-    int expected = 0;
-    if (!_Py_atomic_compare_exchange_int(&gcstate->collecting, &expected, 1)) {
-        // Don't start a garbage collection if one is already in progress.
+    if (!gcstate->enabled) {
         return 0;
     }
 
-    struct gc_collection_stats stats = { 0 };
-    if (reason != _Py_GC_REASON_SHUTDOWN) {
-        invoke_gc_callback(gcstate, "start", generation, &stats);
-    }
-    if (PyDTrace_GC_START_ENABLED()) {
-        PyDTrace_GC_START(generation);
-    }
+    Py_ssize_t n;
     PyObject *exc = _PyErr_GetRaisedException(tstate);
-    switch(generation) {
-        case 0:
-            gc_collect_young(tstate, &stats);
-            break;
-        case 1:
-            gc_collect_increment(tstate, &stats);
-            break;
-        case 2:
-            gc_collect_full(tstate, &stats);
-            break;
-        default:
-            Py_UNREACHABLE();
-    }
-    if (PyDTrace_GC_DONE_ENABLED()) {
-        PyDTrace_GC_DONE(stats.uncollectable + stats.collected);
-    }
-    if (reason != _Py_GC_REASON_SHUTDOWN) {
-        invoke_gc_callback(gcstate, "stop", generation, &stats);
-    }
+    n = gc_collect_main(tstate, NUM_GENERATIONS - 1, _Py_GC_REASON_MANUAL);
     _PyErr_SetRaisedException(tstate, exc);
-    GC_STAT_ADD(generation, objects_collected, stats.collected);
-#ifdef Py_STATS
-    if (_Py_stats) {
-        GC_STAT_ADD(generation, object_visits,
-            _Py_stats->object_stats.object_visits);
-        _Py_stats->object_stats.object_visits = 0;
-    }
-#endif
-    validate_old(gcstate);
-    _Py_atomic_store_int(&gcstate->collecting, 0);
-    return stats.uncollectable + stats.collected;
+
+    return n;
 }
 
-/* Public API to invoke gc.collect() from C */
 Py_ssize_t
-PyGC_Collect(void)
+_PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
 {
-    return _PyGC_Collect(_PyThreadState_GET(), 2, _Py_GC_REASON_MANUAL);
+    return gc_collect_main(tstate, generation, reason);
 }
 
 void
@@ -1852,7 +1654,7 @@ _PyGC_CollectNoFail(PyThreadState *tstate)
        during interpreter shutdown (and then never finish it).
        See http://bugs.python.org/issue8713#msg195178 for an example.
        */
-    _PyGC_Collect(_PyThreadState_GET(), 2, _Py_GC_REASON_SHUTDOWN);
+    gc_collect_main(tstate, NUM_GENERATIONS - 1, _Py_GC_REASON_SHUTDOWN);
 }
 
 void
@@ -1896,6 +1698,13 @@ _PyGC_DumpShutdownStats(PyInterpreterState *interp)
     }
 }
 
+static void
+finalize_unlink_gc_head(PyGC_Head *gc) {
+    PyGC_Head *prev = GC_PREV(gc);
+    PyGC_Head *next = GC_NEXT(gc);
+    _PyGCHead_SET_NEXT(prev, next);
+    _PyGCHead_SET_PREV(next, prev);
+}
 
 void
 _PyGC_Fini(PyInterpreterState *interp)
@@ -1904,9 +1713,25 @@ _PyGC_Fini(PyInterpreterState *interp)
     Py_CLEAR(gcstate->garbage);
     Py_CLEAR(gcstate->callbacks);
 
-    /* We expect that none of this interpreters objects are shared
-       with other interpreters.
-       See https://github.com/python/cpython/issues/90228. */
+    /* Prevent a subtle bug that affects sub-interpreters that use basic
+     * single-phase init extensions (m_size == -1).  Those extensions cause objects
+     * to be shared between interpreters, via the PyDict_Update(mdict, m_copy) call
+     * in import_find_extension().
+     *
+     * If they are GC objects, their GC head next or prev links could refer to
+     * the interpreter _gc_runtime_state PyGC_Head nodes.  Those nodes go away
+     * when the interpreter structure is freed and so pointers to them become
+     * invalid.  If those objects are still used by another interpreter and
+     * UNTRACK is called on them, a crash will happen.  We untrack the nodes
+     * here to avoid that.
+     *
+     * This bug was originally fixed when reported as gh-90228.  The bug was
+     * re-introduced in gh-94673.
+     */
+    for (int i = 0; i < NUM_GENERATIONS; i++) {
+        finalize_unlink_gc_head(&gcstate->generations[i].head);
+    }
+    finalize_unlink_gc_head(&gcstate->permanent_generation.head);
 }
 
 /* for debugging */
@@ -1991,11 +1816,10 @@ _PyObject_GC_Link(PyObject *op)
     GCState *gcstate = &tstate->interp->gc;
     gc->_gc_next = 0;
     gc->_gc_prev = 0;
-    gcstate->young.count++; /* number of allocated GC objects */
-    gcstate->heap_size++;
-    if (gcstate->young.count > gcstate->young.threshold &&
+    gcstate->generations[0].count++; /* number of allocated GC objects */
+    if (gcstate->generations[0].count > gcstate->generations[0].threshold &&
         gcstate->enabled &&
-        gcstate->young.threshold &&
+        gcstate->generations[0].threshold &&
         !_Py_atomic_load_int_relaxed(&gcstate->collecting) &&
         !_PyErr_Occurred(tstate))
     {
@@ -2006,9 +1830,11 @@ _PyObject_GC_Link(PyObject *op)
 void
 _Py_RunGC(PyThreadState *tstate)
 {
-    if (tstate->interp->gc.enabled) {
-        _PyGC_Collect(tstate, 1, _Py_GC_REASON_HEAP);
+    GCState *gcstate = get_gc_state();
+    if (!gcstate->enabled) {
+        return;
     }
+    gc_collect_main(tstate, GENERATION_AUTO, _Py_GC_REASON_HEAP);
 }
 
 static PyObject *
@@ -2116,10 +1942,9 @@ PyObject_GC_Del(void *op)
 #endif
     }
     GCState *gcstate = get_gc_state();
-    if (gcstate->young.count > 0) {
-        gcstate->young.count--;
+    if (gcstate->generations[0].count > 0) {
+        gcstate->generations[0].count--;
     }
-    gcstate->heap_size--;
     PyObject_Free(((char *)op)-presize);
 }
 
@@ -2141,36 +1966,26 @@ PyObject_GC_IsFinalized(PyObject *obj)
     return 0;
 }
 
-static int
-visit_generation(gcvisitobjects_t callback, void *arg, struct gc_generation *gen)
-{
-    PyGC_Head *gc_list, *gc;
-    gc_list = &gen->head;
-    for (gc = GC_NEXT(gc_list); gc != gc_list; gc = GC_NEXT(gc)) {
-        PyObject *op = FROM_GC(gc);
-        Py_INCREF(op);
-        int res = callback(op, arg);
-        Py_DECREF(op);
-        if (!res) {
-            return -1;
-        }
-    }
-    return 0;
-}
-
 void
 PyUnstable_GC_VisitObjects(gcvisitobjects_t callback, void *arg)
 {
+    size_t i;
     GCState *gcstate = get_gc_state();
     int origenstate = gcstate->enabled;
     gcstate->enabled = 0;
-    if (visit_generation(callback, arg, &gcstate->young)) {
-        goto done;
-    }
-    if (visit_generation(callback, arg, &gcstate->old[0])) {
-        goto done;
+    for (i = 0; i < NUM_GENERATIONS; i++) {
+        PyGC_Head *gc_list, *gc;
+        gc_list = GEN_HEAD(gcstate, i);
+        for (gc = GC_NEXT(gc_list); gc != gc_list; gc = GC_NEXT(gc)) {
+            PyObject *op = FROM_GC(gc);
+            Py_INCREF(op);
+            int res = callback(op, arg);
+            Py_DECREF(op);
+            if (!res) {
+                goto done;
+            }
+        }
     }
-    visit_generation(callback, arg, &gcstate->old[1]);
 done:
     gcstate->enabled = origenstate;
 }
diff --git a/Python/gc_free_threading.c b/Python/gc_free_threading.c
index ee006bb4aa12b7..ff86c759eb2c1c 100644
--- a/Python/gc_free_threading.c
+++ b/Python/gc_free_threading.c
@@ -86,7 +86,7 @@ worklist_pop(struct worklist *worklist)
     PyObject *op = (PyObject *)worklist->head;
     if (op != NULL) {
         worklist->head = op->ob_tid;
-        op->ob_tid = 0;
+        _Py_atomic_store_uintptr_relaxed(&op->ob_tid, 0);
     }
     return op;
 }
@@ -110,6 +110,12 @@ worklist_remove(struct worklist_iter *iter)
     iter->next = iter->ptr;
 }
 
+static inline int
+gc_is_frozen(PyObject *op)
+{
+    return (op->ob_gc_bits & _PyGC_BITS_FROZEN) != 0;
+}
+
 static inline int
 gc_is_unreachable(PyObject *op)
 {
@@ -189,6 +195,7 @@ merge_refcount(PyObject *op, Py_ssize_t extra)
 static void
 gc_restore_tid(PyObject *op)
 {
+    assert(_PyInterpreterState_GET()->stoptheworld.world_stopped);
     mi_segment_t *segment = _mi_ptr_segment(op);
     if (_Py_REF_IS_MERGED(op->ob_ref_shared)) {
         op->ob_tid = 0;
@@ -228,7 +235,7 @@ op_from_block(void *block, void *arg, bool include_frozen)
     if (!_PyObject_GC_IS_TRACKED(op)) {
         return NULL;
     }
-    if (!include_frozen && (op->ob_gc_bits & _PyGC_BITS_FROZEN) != 0) {
+    if (!include_frozen && gc_is_frozen(op)) {
         return NULL;
     }
     return op;
@@ -251,6 +258,10 @@ gc_visit_heaps_lock_held(PyInterpreterState *interp, mi_block_visit_fun *visitor
     // visit each thread's heaps for GC objects
     for (PyThreadState *p = interp->threads.head; p != NULL; p = p->next) {
         struct _mimalloc_thread_state *m = &((_PyThreadStateImpl *)p)->mimalloc;
+        if (!_Py_atomic_load_int(&m->initialized)) {
+            // The thread may not have called tstate_mimalloc_bind() yet.
+            continue;
+        }
 
         arg->offset = offset_base;
         if (!mi_heap_visit_blocks(&m->heaps[_Py_MIMALLOC_HEAP_GC], true,
@@ -335,25 +346,34 @@ merge_all_queued_objects(PyInterpreterState *interp, struct collection_state *st
 static void
 process_delayed_frees(PyInterpreterState *interp)
 {
-    // In STW status, we can observe the latest write sequence by
-    // advancing the write sequence immediately.
+    // While we are in a "stop the world" pause, we can observe the latest
+    // write sequence by advancing the write sequence immediately.
     _Py_qsbr_advance(&interp->qsbr);
     _PyThreadStateImpl *current_tstate = (_PyThreadStateImpl *)_PyThreadState_GET();
     _Py_qsbr_quiescent_state(current_tstate->qsbr);
+
+    // Merge the queues from other threads into our own queue so that we can
+    // process all of the pending delayed free requests at once.
     HEAD_LOCK(&_PyRuntime);
-    PyThreadState *tstate = interp->threads.head;
-    while (tstate != NULL) {
-        _PyMem_ProcessDelayed(tstate);
-        tstate = (PyThreadState *)tstate->next;
+    for (PyThreadState *p = interp->threads.head; p != NULL; p = p->next) {
+        _PyThreadStateImpl *other = (_PyThreadStateImpl *)p;
+        if (other != current_tstate) {
+            llist_concat(&current_tstate->mem_free_queue, &other->mem_free_queue);
+        }
     }
     HEAD_UNLOCK(&_PyRuntime);
+
+    _PyMem_ProcessDelayed((PyThreadState *)current_tstate);
 }
 
 // Subtract an incoming reference from the computed "gc_refs" refcount.
 static int
 visit_decref(PyObject *op, void *arg)
 {
-    if (_PyObject_GC_IS_TRACKED(op) && !_Py_IsImmortal(op)) {
+    if (_PyObject_GC_IS_TRACKED(op)
+        && !_Py_IsImmortal(op)
+        && !gc_is_frozen(op))
+    {
         // If update_refs hasn't reached this object yet, mark it
         // as (tentatively) unreachable and initialize ob_tid to zero.
         gc_maybe_init_refs(op);
@@ -450,6 +470,30 @@ mark_reachable(PyObject *op)
 }
 
 #ifdef GC_DEBUG
+static bool
+validate_refcounts(const mi_heap_t *heap, const mi_heap_area_t *area,
+                   void *block, size_t block_size, void *args)
+{
+    PyObject *op = op_from_block(block, args, false);
+    if (op == NULL) {
+        return true;
+    }
+
+    _PyObject_ASSERT_WITH_MSG(op, !gc_is_unreachable(op),
+                              "object should not be marked as unreachable yet");
+
+    if (_Py_REF_IS_MERGED(op->ob_ref_shared)) {
+        _PyObject_ASSERT_WITH_MSG(op, op->ob_tid == 0,
+                                  "merged objects should have ob_tid == 0");
+    }
+    else if (!_Py_IsImmortal(op)) {
+        _PyObject_ASSERT_WITH_MSG(op, op->ob_tid != 0,
+                                  "unmerged objects should have ob_tid != 0");
+    }
+
+    return true;
+}
+
 static bool
 validate_gc_objects(const mi_heap_t *heap, const mi_heap_area_t *area,
                     void *block, size_t block_size, void *args)
@@ -493,6 +537,19 @@ mark_heap_visitor(const mi_heap_t *heap, const mi_heap_area_t *area,
     return true;
 }
 
+static bool
+restore_refs(const mi_heap_t *heap, const mi_heap_area_t *area,
+             void *block, size_t block_size, void *args)
+{
+    PyObject *op = op_from_block(block, args, false);
+    if (op == NULL) {
+        return true;
+    }
+    gc_restore_tid(op);
+    gc_clear_unreachable(op);
+    return true;
+}
+
 /* Return true if object has a pre-PEP 442 finalization method. */
 static int
 has_legacy_finalizer(PyObject *op)
@@ -544,6 +601,13 @@ static int
 deduce_unreachable_heap(PyInterpreterState *interp,
                         struct collection_state *state)
 {
+
+#ifdef GC_DEBUG
+    // Check that all objects are marked as unreachable and that the computed
+    // reference count difference (stored in `ob_tid`) is non-negative.
+    gc_visit_heaps(interp, &validate_refcounts, &state->base);
+#endif
+
     // Identify objects that are directly reachable from outside the GC heap
     // by computing the difference between the refcount and the number of
     // incoming references.
@@ -558,6 +622,8 @@ deduce_unreachable_heap(PyInterpreterState *interp,
     // Transitively mark reachable objects by clearing the
     // _PyGC_BITS_UNREACHABLE flag.
     if (gc_visit_heaps(interp, &mark_heap_visitor, &state->base) < 0) {
+        // On out-of-memory, restore the refcounts and bail out.
+        gc_visit_heaps(interp, &restore_refs, &state->base);
         return -1;
     }
 
@@ -676,7 +742,6 @@ call_weakref_callbacks(struct collection_state *state)
             Py_DECREF(temp);
         }
 
-        gc_restore_tid(op);
         Py_DECREF(op);  // drop worklist reference
     }
 }
@@ -694,7 +759,7 @@ void
 _PyGC_InitState(GCState *gcstate)
 {
     // TODO: move to pycore_runtime_init.h once the incremental GC lands.
-    gcstate->young.threshold = 2000;
+    gcstate->generations[0].threshold = 2000;
 }
 
 
@@ -703,11 +768,9 @@ _PyGC_Init(PyInterpreterState *interp)
 {
     GCState *gcstate = &interp->gc;
 
-    if (_Py_IsMainInterpreter(interp)) {
-        // gh-117783: immortalize objects that would use deferred refcounting
-        // once the first non-main thread is created.
-        gcstate->immortalize.enable_on_thread_created = 1;
-    }
+    // gh-117783: immortalize objects that would use deferred refcounting
+    // once the first non-main thread is created (but not in subinterpreters).
+    gcstate->immortalize = _Py_IsMainInterpreter(interp) ? 0 : -1;
 
     gcstate->garbage = PyList_New(0);
     if (gcstate->garbage == NULL) {
@@ -986,7 +1049,6 @@ cleanup_worklist(struct worklist *worklist)
 {
     PyObject *op;
     while ((op = worklist_pop(worklist)) != NULL) {
-        gc_restore_tid(op);
         gc_clear_unreachable(op);
         Py_DECREF(op);
     }
@@ -995,8 +1057,8 @@ cleanup_worklist(struct worklist *worklist)
 static bool
 gc_should_collect(GCState *gcstate)
 {
-    int count = _Py_atomic_load_int_relaxed(&gcstate->young.count);
-    int threshold = gcstate->young.threshold;
+    int count = _Py_atomic_load_int_relaxed(&gcstate->generations[0].count);
+    int threshold = gcstate->generations[0].threshold;
     if (count <= threshold || threshold == 0 || !gcstate->enabled) {
         return false;
     }
@@ -1004,7 +1066,7 @@ gc_should_collect(GCState *gcstate)
     // objects. A few tests rely on immediate scheduling of the GC so we ignore
     // the scaled threshold if generations[1].threshold is set to zero.
     return (count > gcstate->long_lived_total / 4 ||
-            gcstate->old[0].threshold == 0);
+            gcstate->generations[1].threshold == 0);
 }
 
 static void
@@ -1018,7 +1080,7 @@ record_allocation(PyThreadState *tstate)
     if (gc->alloc_count >= LOCAL_ALLOC_COUNT_THRESHOLD) {
         // TODO: Use Py_ssize_t for the generation count.
         GCState *gcstate = &tstate->interp->gc;
-        _Py_atomic_add_int(&gcstate->young.count, (int)gc->alloc_count);
+        _Py_atomic_add_int(&gcstate->generations[0].count, (int)gc->alloc_count);
         gc->alloc_count = 0;
 
         if (gc_should_collect(gcstate) &&
@@ -1037,7 +1099,7 @@ record_deallocation(PyThreadState *tstate)
     gc->alloc_count--;
     if (gc->alloc_count <= -LOCAL_ALLOC_COUNT_THRESHOLD) {
         GCState *gcstate = &tstate->interp->gc;
-        _Py_atomic_add_int(&gcstate->young.count, (int)gc->alloc_count);
+        _Py_atomic_add_int(&gcstate->generations[0].count, (int)gc->alloc_count);
         gc->alloc_count = 0;
     }
 }
@@ -1049,12 +1111,10 @@ gc_collect_internal(PyInterpreterState *interp, struct collection_state *state,
 
     // update collection and allocation counters
     if (generation+1 < NUM_GENERATIONS) {
-        state->gcstate->old[generation].count += 1;
+        state->gcstate->generations[generation+1].count += 1;
     }
-
-    state->gcstate->young.count = 0;
-    for (int i = 1; i <= generation; ++i) {
-        state->gcstate->old[i-1].count = 0;
+    for (int i = 0; i <= generation; i++) {
+        state->gcstate->generations[i].count = 0;
     }
 
     // merge refcounts for all queued objects
@@ -1065,7 +1125,8 @@ gc_collect_internal(PyInterpreterState *interp, struct collection_state *state,
     int err = deduce_unreachable_heap(interp, state);
     if (err < 0) {
         _PyEval_StartTheWorld(interp);
-        goto error;
+        PyErr_NoMemory();
+        return;
     }
 
     // Print debugging information.
@@ -1099,7 +1160,12 @@ gc_collect_internal(PyInterpreterState *interp, struct collection_state *state,
     _PyEval_StartTheWorld(interp);
 
     if (err < 0) {
-        goto error;
+        cleanup_worklist(&state->unreachable);
+        cleanup_worklist(&state->legacy_finalizers);
+        cleanup_worklist(&state->wrcb_to_call);
+        cleanup_worklist(&state->objs_to_decref);
+        PyErr_NoMemory();
+        return;
     }
 
     // Call tp_clear on objects in the unreachable set. This will cause
@@ -1109,15 +1175,6 @@ gc_collect_internal(PyInterpreterState *interp, struct collection_state *state,
 
     // Append objects with legacy finalizers to the "gc.garbage" list.
     handle_legacy_finalizers(state);
-    return;
-
-error:
-    cleanup_worklist(&state->unreachable);
-    cleanup_worklist(&state->legacy_finalizers);
-    cleanup_worklist(&state->wrcb_to_call);
-    cleanup_worklist(&state->objs_to_decref);
-    PyErr_NoMemory();
-    PyErr_FormatUnraisable("Out of memory during garbage collection");
 }
 
 /* This is the main function.  Read this to understand how the
@@ -1233,10 +1290,32 @@ gc_collect_main(PyThreadState *tstate, int generation, _PyGC_Reason reason)
     return n + m;
 }
 
+static PyObject *
+list_from_object_stack(_PyObjectStack *stack)
+{
+    PyObject *list = PyList_New(_PyObjectStack_Size(stack));
+    if (list == NULL) {
+        PyObject *op;
+        while ((op = _PyObjectStack_Pop(stack)) != NULL) {
+            Py_DECREF(op);
+        }
+        return NULL;
+    }
+
+    PyObject *op;
+    Py_ssize_t idx = 0;
+    while ((op = _PyObjectStack_Pop(stack)) != NULL) {
+        assert(idx < PyList_GET_SIZE(list));
+        PyList_SET_ITEM(list, idx++, op);
+    }
+    assert(idx == PyList_GET_SIZE(list));
+    return list;
+}
+
 struct get_referrers_args {
     struct visitor_args base;
     PyObject *objs;
-    struct worklist results;
+    _PyObjectStack results;
 };
 
 static int
@@ -1260,11 +1339,21 @@ visit_get_referrers(const mi_heap_t *heap, const mi_heap_area_t *area,
     if (op == NULL) {
         return true;
     }
+    if (op->ob_gc_bits & (_PyGC_BITS_UNREACHABLE | _PyGC_BITS_FROZEN)) {
+        // Exclude unreachable objects (in-progress GC) and frozen
+        // objects from gc.get_objects() to match the default build.
+        return true;
+    }
 
     struct get_referrers_args *arg = (struct get_referrers_args *)args;
+    if (op == arg->objs) {
+        // Don't include the tuple itself in the referrers list.
+        return true;
+    }
     if (Py_TYPE(op)->tp_traverse(op, referrersvisit, arg->objs)) {
-        op->ob_tid = 0;  // we will restore the refcount later
-        worklist_push(&arg->results, op);
+        if (_PyObjectStack_Push(&arg->results, Py_NewRef(op)) < 0) {
+            return false;
+        }
     }
 
     return true;
@@ -1273,48 +1362,25 @@ visit_get_referrers(const mi_heap_t *heap, const mi_heap_area_t *area,
 PyObject *
 _PyGC_GetReferrers(PyInterpreterState *interp, PyObject *objs)
 {
-    PyObject *result = PyList_New(0);
-    if (!result) {
-        return NULL;
-    }
-
-    _PyEval_StopTheWorld(interp);
-
-    // Append all objects to a worklist. This abuses ob_tid. We will restore
-    // it later. NOTE: We can't append to the PyListObject during
-    // gc_visit_heaps() because PyList_Append() may reclaim an abandoned
-    // mimalloc segments while we are traversing them.
+    // NOTE: We can't append to the PyListObject during gc_visit_heaps()
+    // because PyList_Append() may reclaim an abandoned mimalloc segments
+    // while we are traversing them.
     struct get_referrers_args args = { .objs = objs };
-    gc_visit_heaps(interp, &visit_get_referrers, &args.base);
-
-    bool error = false;
-    PyObject *op;
-    while ((op = worklist_pop(&args.results)) != NULL) {
-        gc_restore_tid(op);
-        if (op != objs && PyList_Append(result, op) < 0) {
-            error = true;
-            break;
-        }
-    }
-
-    // In case of error, clear the remaining worklist
-    while ((op = worklist_pop(&args.results)) != NULL) {
-        gc_restore_tid(op);
-    }
-
+    _PyEval_StopTheWorld(interp);
+    int err = gc_visit_heaps(interp, &visit_get_referrers, &args.base);
     _PyEval_StartTheWorld(interp);
 
-    if (error) {
-        Py_DECREF(result);
-        return NULL;
+    PyObject *list = list_from_object_stack(&args.results);
+    if (err < 0) {
+        PyErr_NoMemory();
+        Py_CLEAR(list);
     }
-
-    return result;
+    return list;
 }
 
 struct get_objects_args {
     struct visitor_args base;
-    struct worklist objects;
+    _PyObjectStack objects;
 };
 
 static bool
@@ -1325,54 +1391,36 @@ visit_get_objects(const mi_heap_t *heap, const mi_heap_area_t *area,
     if (op == NULL) {
         return true;
     }
+    if (op->ob_gc_bits & (_PyGC_BITS_UNREACHABLE | _PyGC_BITS_FROZEN)) {
+        // Exclude unreachable objects (in-progress GC) and frozen
+        // objects from gc.get_objects() to match the default build.
+        return true;
+    }
 
     struct get_objects_args *arg = (struct get_objects_args *)args;
-    op->ob_tid = 0;  // we will restore the refcount later
-    worklist_push(&arg->objects, op);
-
+    if (_PyObjectStack_Push(&arg->objects, Py_NewRef(op)) < 0) {
+        return false;
+    }
     return true;
 }
 
 PyObject *
 _PyGC_GetObjects(PyInterpreterState *interp, int generation)
 {
-    PyObject *result = PyList_New(0);
-    if (!result) {
-        return NULL;
-    }
-
-    _PyEval_StopTheWorld(interp);
-
-    // Append all objects to a worklist. This abuses ob_tid. We will restore
-    // it later. NOTE: We can't append to the list during gc_visit_heaps()
-    // because PyList_Append() may reclaim an abandoned mimalloc segment
-    // while we are traversing it.
+    // NOTE: We can't append to the PyListObject during gc_visit_heaps()
+    // because PyList_Append() may reclaim an abandoned mimalloc segments
+    // while we are traversing them.
     struct get_objects_args args = { 0 };
-    gc_visit_heaps(interp, &visit_get_objects, &args.base);
-
-    bool error = false;
-    PyObject *op;
-    while ((op = worklist_pop(&args.objects)) != NULL) {
-        gc_restore_tid(op);
-        if (op != result && PyList_Append(result, op) < 0) {
-            error = true;
-            break;
-        }
-    }
-
-    // In case of error, clear the remaining worklist
-    while ((op = worklist_pop(&args.objects)) != NULL) {
-        gc_restore_tid(op);
-    }
-
+    _PyEval_StopTheWorld(interp);
+    int err = gc_visit_heaps(interp, &visit_get_objects, &args.base);
     _PyEval_StartTheWorld(interp);
 
-    if (error) {
-        Py_DECREF(result);
-        return NULL;
+    PyObject *list = list_from_object_stack(&args.objects);
+    if (err < 0) {
+        PyErr_NoMemory();
+        Py_CLEAR(list);
     }
-
-    return result;
+    return list;
 }
 
 static bool
@@ -1380,7 +1428,7 @@ visit_freeze(const mi_heap_t *heap, const mi_heap_area_t *area,
              void *block, size_t block_size, void *args)
 {
     PyObject *op = op_from_block(block, args, true);
-    if (op != NULL) {
+    if (op != NULL && !gc_is_unreachable(op)) {
         op->ob_gc_bits |= _PyGC_BITS_FROZEN;
     }
     return true;
@@ -1425,7 +1473,7 @@ visit_count_frozen(const mi_heap_t *heap, const mi_heap_area_t *area,
                    void *block, size_t block_size, void *args)
 {
     PyObject *op = op_from_block(block, args, true);
-    if (op != NULL && (op->ob_gc_bits & _PyGC_BITS_FROZEN) != 0) {
+    if (op != NULL && gc_is_frozen(op)) {
         struct count_frozen_args *arg = (struct count_frozen_args *)args;
         arg->count++;
     }
@@ -1809,8 +1857,10 @@ _PyGC_ImmortalizeDeferredObjects(PyInterpreterState *interp)
 {
     struct visitor_args args;
     _PyEval_StopTheWorld(interp);
-    gc_visit_heaps(interp, &immortalize_visitor, &args);
-    interp->gc.immortalize.enabled = 1;
+    if (interp->gc.immortalize == 0) {
+        gc_visit_heaps(interp, &immortalize_visitor, &args);
+        interp->gc.immortalize = 1;
+    }
     _PyEval_StartTheWorld(interp);
 }
 
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
index 8b8112209cc78a..1488e4215cf579 100644
--- a/Python/generated_cases.c.h
+++ b/Python/generated_cases.c.h
@@ -875,6 +875,8 @@
             PyFunctionObject *init = (PyFunctionObject *)cls->_spec_cache.init;
             PyCodeObject *code = (PyCodeObject *)init->func_code;
             DEOPT_IF(code->co_argcount != oparg+1, CALL);
+            DEOPT_IF((code->co_flags & (CO_VARKEYWORDS | CO_VARARGS | CO_OPTIMIZED)) != CO_OPTIMIZED, CALL);
+            DEOPT_IF(code->co_kwonlyargcount, CALL);
             DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize + _Py_InitCleanup.co_framesize), CALL);
             STAT_INC(CALL, hit);
             PyObject *self = _PyType_NewManagedObject(tp);
@@ -2787,7 +2789,7 @@
                         if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                             goto error;
                         }
-                        monitor_raise(tstate, frame, this_instr);
+                        _PyEval_MonitorRaise(tstate, frame, this_instr);
                         _PyErr_Clear(tstate);
                     }
                     /* iterator ended normally */
@@ -3260,11 +3262,9 @@
             /* Need to create a fake StopIteration error here,
              * to conform to PEP 380 */
             if (PyGen_Check(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                if (monitor_stop_iteration(tstate, frame, this_instr, value)) {
                     goto error;
                 }
-                PyErr_SetRaisedException(NULL);
             }
             Py_DECREF(value);
             stack_pointer += -1;
@@ -3281,11 +3281,9 @@
             value = stack_pointer[-1];
             receiver = stack_pointer[-2];
             if (PyGen_Check(receiver) || PyCoro_CheckExact(receiver)) {
-                PyErr_SetObject(PyExc_StopIteration, value);
-                if (monitor_stop_iteration(tstate, frame, this_instr)) {
+                if (monitor_stop_iteration(tstate, frame, this_instr, value)) {
                     goto error;
                 }
-                PyErr_SetRaisedException(NULL);
             }
             Py_DECREF(receiver);
             stack_pointer[-2] = value;
@@ -3311,7 +3309,7 @@
                     if (!_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)) {
                         goto error;
                     }
-                    monitor_raise(tstate, frame, this_instr);
+                    _PyEval_MonitorRaise(tstate, frame, this_instr);
                     _PyErr_Clear(tstate);
                 }
                 /* iterator ended normally */
@@ -4385,18 +4383,35 @@
                 goto error;
             }
             if (v == NULL) {
-                if (PyDict_GetItemRef(GLOBALS(), name, &v) < 0) {
-                    goto error;
-                }
-                if (v == NULL) {
-                    if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) {
+                if (PyDict_CheckExact(GLOBALS())
+                    && PyDict_CheckExact(BUILTINS()))
+                {
+                    v = _PyDict_LoadGlobal((PyDictObject *)GLOBALS(),
+                        (PyDictObject *)BUILTINS(),
+                        name);
+                    if (v == NULL) {
+                        if (!_PyErr_Occurred(tstate)) {
+                            /* _PyDict_LoadGlobal() returns NULL without raising
+                             * an exception if the key doesn't exist */
+                            _PyEval_FormatExcCheckArg(tstate, PyExc_NameError,
+                                NAME_ERROR_MSG, name);
+                        }
                         goto error;
                     }
+                }
+                else {
+                    /* Slow-path if globals or builtins is not a dict */
+                    /* namespace 1: globals */
+                    if (PyMapping_GetOptionalItem(GLOBALS(), name, &v) < 0) goto pop_1_error;
                     if (v == NULL) {
-                        _PyEval_FormatExcCheckArg(
-                            tstate, PyExc_NameError,
-                            NAME_ERROR_MSG, name);
-                        goto error;
+                        /* namespace 2: builtins */
+                        if (PyMapping_GetOptionalItem(BUILTINS(), name, &v) < 0) goto pop_1_error;
+                        if (v == NULL) {
+                            _PyEval_FormatExcCheckArg(
+                                tstate, PyExc_NameError,
+                                NAME_ERROR_MSG, name);
+                            if (true) goto pop_1_error;
+                        }
                     }
                 }
             }
@@ -4751,7 +4766,7 @@
             next_instr += 1;
             INSTRUCTION_STATS(MAKE_CELL);
             // "initial" is probably NULL but not if it's an arg (or set
-            // via PyFrame_LocalsToFast() before MAKE_CELL has run).
+            // via the f_locals proxy before MAKE_CELL has run).
             PyObject *initial = GETLOCAL(oparg);
             PyObject *cell = PyCell_New(initial);
             if (cell == NULL) {
@@ -5304,7 +5319,7 @@
                 if (retval == NULL) {
                     if (_PyErr_ExceptionMatches(tstate, PyExc_StopIteration)
                     ) {
-                        monitor_raise(tstate, frame, this_instr);
+                        _PyEval_MonitorRaise(tstate, frame, this_instr);
                     }
                     if (_PyGen_FetchStopIterationValue(&retval) == 0) {
                         assert(retval != NULL);
@@ -5593,14 +5608,15 @@
                 new_version = _PyDict_NotifyEvent(tstate->interp, PyDict_EVENT_MODIFIED, dict, name, value);
                 ep->me_value = value;
             }
-            Py_DECREF(old_value);
-            STAT_INC(STORE_ATTR, hit);
             /* Ensure dict is GC tracked if it needs to be */
             if (!_PyObject_GC_IS_TRACKED(dict) && _PyObject_GC_MAY_BE_TRACKED(value)) {
                 _PyObject_GC_TRACK(dict);
             }
-            /* PEP 509 */
-            dict->ma_version_tag = new_version;
+            dict->ma_version_tag = new_version; // PEP 509
+            // old_value should be DECREFed after GC track checking is done, if not, it could raise a segmentation fault,
+            // when dict only holds the strong reference to value in ep->me_value.
+            Py_DECREF(old_value);
+            STAT_INC(STORE_ATTR, hit);
             Py_DECREF(owner);
             stack_pointer += -2;
             DISPATCH();
@@ -5923,7 +5939,7 @@
             DEOPT_IF(!PyLong_CheckExact(value), TO_BOOL);
             STAT_INC(TO_BOOL, hit);
             if (_PyLong_IsZero((PyLongObject *)value)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
@@ -5983,7 +5999,7 @@
             DEOPT_IF(!PyUnicode_CheckExact(value), TO_BOOL);
             STAT_INC(TO_BOOL, hit);
             if (value == &_Py_STR(empty)) {
-                assert(_Py_IsImmortal(value));
+                assert(_Py_IsImmortalLoose(value));
                 res = Py_False;
             }
             else {
diff --git a/Python/getargs.c b/Python/getargs.c
index 539925e471f54c..e95ccec851fb38 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -7,6 +7,7 @@
 #include "pycore_dict.h"          // _PyDict_HasOnlyStringKeys()
 #include "pycore_modsupport.h"    // export _PyArg_NoKeywords()
 #include "pycore_pylifecycle.h"   // _PyArg_Fini
+#include "pycore_pystate.h"       // _Py_IsMainInterpreter()
 #include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "pycore_pyerrors.h"      // _Py_CalculateSuggestions()
 
@@ -1907,7 +1908,8 @@ new_kwtuple(const char * const *keywords, int total, int pos)
             Py_DECREF(kwtuple);
             return NULL;
         }
-        PyUnicode_InternInPlace(&str);
+        PyInterpreterState *interp = _PyInterpreterState_GET();
+        _PyUnicode_InternImmortal(interp, &str);
         PyTuple_SET_ITEM(kwtuple, i, str);
     }
     return kwtuple;
@@ -1947,7 +1949,23 @@ _parser_init(void *arg)
     int owned;
     PyObject *kwtuple = parser->kwtuple;
     if (kwtuple == NULL) {
+        /* We may temporarily switch to the main interpreter to avoid
+         * creating a tuple that could outlive its owning interpreter. */
+        PyThreadState *save_tstate = NULL;
+        PyThreadState *temp_tstate = NULL;
+        if (!_Py_IsMainInterpreter(PyInterpreterState_Get())) {
+            temp_tstate = PyThreadState_New(_PyInterpreterState_Main());
+            if (temp_tstate == NULL) {
+                return -1;
+            }
+            save_tstate = PyThreadState_Swap(temp_tstate);
+        }
         kwtuple = new_kwtuple(keywords, len, pos);
+        if (temp_tstate != NULL) {
+            PyThreadState_Clear(temp_tstate);
+            (void)PyThreadState_Swap(save_tstate);
+            PyThreadState_Delete(temp_tstate);
+        }
         if (kwtuple == NULL) {
             return -1;
         }
@@ -1969,8 +1987,8 @@ _parser_init(void *arg)
     parser->next = _Py_atomic_load_ptr(&_PyRuntime.getargs.static_parsers);
     do {
         // compare-exchange updates parser->next on failure
-    } while (_Py_atomic_compare_exchange_ptr(&_PyRuntime.getargs.static_parsers,
-                                             &parser->next, parser));
+    } while (!_Py_atomic_compare_exchange_ptr(&_PyRuntime.getargs.static_parsers,
+                                              &parser->next, parser));
     return 0;
 }
 
@@ -1986,6 +2004,19 @@ parser_clear(struct _PyArg_Parser *parser)
     if (parser->is_kwtuple_owned) {
         Py_CLEAR(parser->kwtuple);
     }
+
+    if (parser->format) {
+        parser->fname = NULL;
+    }
+    else {
+        assert(parser->fname != NULL);
+    }
+    parser->custom_msg = NULL;
+    parser->pos = 0;
+    parser->min = 0;
+    parser->max = 0;
+    parser->is_kwtuple_owned = 0;
+    parser->once.v = 0;
 }
 
 static PyObject*
@@ -2543,7 +2574,7 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
          *
          * Otherwise, we leave a place at `buf[vararg]` for vararg tuple
          * so the index is `i + 1`. */
-        if (nargs < vararg && i != vararg) {
+        if (i < vararg) {
             buf[i] = current_arg;
         }
         else {
diff --git a/Python/getversion.c b/Python/getversion.c
index 5db836ab4bfd6d..226b2f999a6bfd 100644
--- a/Python/getversion.c
+++ b/Python/getversion.c
@@ -6,7 +6,7 @@
 #include "patchlevel.h"
 
 static int initialized = 0;
-static char version[250];
+static char version[300];
 
 void _Py_InitVersion(void)
 {
@@ -14,7 +14,12 @@ void _Py_InitVersion(void)
         return;
     }
     initialized = 1;
-    PyOS_snprintf(version, sizeof(version), "%.80s (%.80s) %.80s",
+#ifdef Py_GIL_DISABLED
+    const char *buildinfo_format = "%.80s experimental free-threading build (%.80s) %.80s";
+#else
+    const char *buildinfo_format = "%.80s (%.80s) %.80s";
+#endif
+    PyOS_snprintf(version, sizeof(version), buildinfo_format,
                   PY_VERSION, Py_GetBuildInfo(), Py_GetCompiler());
 }
 
diff --git a/Python/import.c b/Python/import.c
index ba44477318d473..755a6e45e6afa3 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -94,11 +94,7 @@ static struct _inittab *inittab_copy = NULL;
     (interp)->imports.import_func
 
 #define IMPORT_LOCK(interp) \
-    (interp)->imports.lock.mutex
-#define IMPORT_LOCK_THREAD(interp) \
-    (interp)->imports.lock.thread
-#define IMPORT_LOCK_LEVEL(interp) \
-    (interp)->imports.lock.level
+    (interp)->imports.lock
 
 #define FIND_AND_LOAD(interp) \
     (interp)->imports.find_and_load
@@ -115,74 +111,21 @@ static struct _inittab *inittab_copy = NULL;
 void
 _PyImport_AcquireLock(PyInterpreterState *interp)
 {
-    unsigned long me = PyThread_get_thread_ident();
-    if (me == PYTHREAD_INVALID_THREAD_ID)
-        return; /* Too bad */
-    if (IMPORT_LOCK(interp) == NULL) {
-        IMPORT_LOCK(interp) = PyThread_allocate_lock();
-        if (IMPORT_LOCK(interp) == NULL)
-            return;  /* Nothing much we can do. */
-    }
-    if (IMPORT_LOCK_THREAD(interp) == me) {
-        IMPORT_LOCK_LEVEL(interp)++;
-        return;
-    }
-    if (IMPORT_LOCK_THREAD(interp) != PYTHREAD_INVALID_THREAD_ID ||
-        !PyThread_acquire_lock(IMPORT_LOCK(interp), 0))
-    {
-        PyThreadState *tstate = PyEval_SaveThread();
-        PyThread_acquire_lock(IMPORT_LOCK(interp), WAIT_LOCK);
-        PyEval_RestoreThread(tstate);
-    }
-    assert(IMPORT_LOCK_LEVEL(interp) == 0);
-    IMPORT_LOCK_THREAD(interp) = me;
-    IMPORT_LOCK_LEVEL(interp) = 1;
+    _PyRecursiveMutex_Lock(&IMPORT_LOCK(interp));
 }
 
-int
+void
 _PyImport_ReleaseLock(PyInterpreterState *interp)
 {
-    unsigned long me = PyThread_get_thread_ident();
-    if (me == PYTHREAD_INVALID_THREAD_ID || IMPORT_LOCK(interp) == NULL)
-        return 0; /* Too bad */
-    if (IMPORT_LOCK_THREAD(interp) != me)
-        return -1;
-    IMPORT_LOCK_LEVEL(interp)--;
-    assert(IMPORT_LOCK_LEVEL(interp) >= 0);
-    if (IMPORT_LOCK_LEVEL(interp) == 0) {
-        IMPORT_LOCK_THREAD(interp) = PYTHREAD_INVALID_THREAD_ID;
-        PyThread_release_lock(IMPORT_LOCK(interp));
-    }
-    return 1;
+    _PyRecursiveMutex_Unlock(&IMPORT_LOCK(interp));
 }
 
-#ifdef HAVE_FORK
-/* This function is called from PyOS_AfterFork_Child() to ensure that newly
-   created child processes do not share locks with the parent.
-   We now acquire the import lock around fork() calls but on some platforms
-   (Solaris 9 and earlier? see isue7242) that still left us with problems. */
-PyStatus
+void
 _PyImport_ReInitLock(PyInterpreterState *interp)
 {
-    if (IMPORT_LOCK(interp) != NULL) {
-        if (_PyThread_at_fork_reinit(&IMPORT_LOCK(interp)) < 0) {
-            return _PyStatus_ERR("failed to create a new lock");
-        }
-    }
-
-    if (IMPORT_LOCK_LEVEL(interp) > 1) {
-        /* Forked as a side effect of import */
-        unsigned long me = PyThread_get_thread_ident();
-        PyThread_acquire_lock(IMPORT_LOCK(interp), WAIT_LOCK);
-        IMPORT_LOCK_THREAD(interp) = me;
-        IMPORT_LOCK_LEVEL(interp)--;
-    } else {
-        IMPORT_LOCK_THREAD(interp) = PYTHREAD_INVALID_THREAD_ID;
-        IMPORT_LOCK_LEVEL(interp) = 0;
-    }
-    return _PyStatus_OK();
+    // gh-126688: Thread id may change after fork() on some operating systems.
+    IMPORT_LOCK(interp).thread = PyThread_get_thread_ident_ex();
 }
-#endif
 
 
 /***************/
@@ -457,7 +400,6 @@ static Py_ssize_t
 _get_module_index_from_def(PyModuleDef *def)
 {
     Py_ssize_t index = def->m_base.m_index;
-    assert(index > 0);
 #ifndef NDEBUG
     struct extensions_cache_value *cached = _find_cached_def(def);
     assert(cached == NULL || index == _get_cached_module_index(cached));
@@ -489,13 +431,13 @@ _set_module_index(PyModuleDef *def, Py_ssize_t index)
 static const char *
 _modules_by_index_check(PyInterpreterState *interp, Py_ssize_t index)
 {
-    if (index == 0) {
+    if (index <= 0) {
         return "invalid module index";
     }
     if (MODULES_BY_INDEX(interp) == NULL) {
         return "Interpreters module-list not accessible.";
     }
-    if (index > PyList_GET_SIZE(MODULES_BY_INDEX(interp))) {
+    if (index >= PyList_GET_SIZE(MODULES_BY_INDEX(interp))) {
         return "Module index out of bounds.";
     }
     return NULL;
@@ -805,7 +747,7 @@ const char *
 _PyImport_ResolveNameWithPackageContext(const char *name)
 {
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+    PyMutex_Lock(&EXTENSIONS.mutex);
 #endif
     if (PKGCONTEXT != NULL) {
         const char *p = strrchr(PKGCONTEXT, '.');
@@ -815,7 +757,7 @@ _PyImport_ResolveNameWithPackageContext(const char *name)
         }
     }
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_release_lock(EXTENSIONS.mutex);
+    PyMutex_Unlock(&EXTENSIONS.mutex);
 #endif
     return name;
 }
@@ -824,12 +766,12 @@ const char *
 _PyImport_SwapPackageContext(const char *newcontext)
 {
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_acquire_lock(EXTENSIONS.mutex, WAIT_LOCK);
+    PyMutex_Lock(&EXTENSIONS.mutex);
 #endif
     const char *oldcontext = PKGCONTEXT;
     PKGCONTEXT = newcontext;
 #ifndef HAVE_THREAD_LOCAL
-    PyThread_release_lock(EXTENSIONS.mutex);
+    PyMutex_Unlock(&EXTENSIONS.mutex);
 #endif
     return oldcontext;
 }
@@ -879,6 +821,8 @@ static int clear_singlephase_extension(PyInterpreterState *interp,
 
 // Currently, this is only used for testing.
 // (See _testinternalcapi.clear_extension().)
+// If adding another use, be careful about modules that import themselves
+// recursively (see gh-123880).
 int
 _PyImport_ClearExtension(PyObject *name, PyObject *filename)
 {
@@ -1113,7 +1057,7 @@ del_cached_def(struct extensions_cache_value *value)
        However, this decref would be problematic if the module def were
        dynamically allocated, it were the last ref, and this function
        were called with an interpreter other than the def's owner. */
-    assert(value->def == NULL || _Py_IsImmortal(value->def));
+    assert(value->def == NULL || _Py_IsImmortalLoose(value->def));
 
     Py_XDECREF(value->def->m_base.m_copy);
     value->def->m_base.m_copy = NULL;
@@ -1211,12 +1155,14 @@ del_extensions_cache_value(struct extensions_cache_value *value)
 static void *
 hashtable_key_from_2_strings(PyObject *str1, PyObject *str2, const char sep)
 {
-    Py_ssize_t str1_len, str2_len;
-    const char *str1_data = PyUnicode_AsUTF8AndSize(str1, &str1_len);
-    const char *str2_data = PyUnicode_AsUTF8AndSize(str2, &str2_len);
+    const char *str1_data = _PyUnicode_AsUTF8NoNUL(str1);
+    const char *str2_data = _PyUnicode_AsUTF8NoNUL(str2);
     if (str1_data == NULL || str2_data == NULL) {
         return NULL;
     }
+    Py_ssize_t str1_len = strlen(str1_data);
+    Py_ssize_t str2_len = strlen(str2_data);
+
     /* Make sure sep and the NULL byte won't cause an overflow. */
     assert(SIZE_MAX - str1_len - str2_len > 2);
     size_t size = str1_len + 1 + str2_len + 1;
@@ -1386,12 +1332,16 @@ _extensions_cache_set(PyObject *path, PyObject *name,
     value = entry == NULL
         ? NULL
         : (struct extensions_cache_value *)entry->value;
-    /* We should never be updating an existing cache value. */
-    assert(value == NULL);
     if (value != NULL) {
-        PyErr_Format(PyExc_SystemError,
-                     "extension module %R is already cached", name);
-        goto finally;
+        /* gh-123880: If there's an existing cache value, it means a module is
+         * being imported recursively from its PyInit_* or Py_mod_* function.
+         * (That function presumably handles returning a partially
+         *  constructed module in such a case.)
+         * We can reuse the existing cache value; it is owned by the cache.
+         * (Entries get removed from it in exceptional circumstances,
+         *  after interpreter shutdown, and in runtime shutdown.)
+         */
+        goto finally_oldvalue;
     }
     newvalue = alloc_extensions_cache_value();
     if (newvalue == NULL) {
@@ -1456,6 +1406,7 @@ _extensions_cache_set(PyObject *path, PyObject *name,
         cleanup_old_cached_def(&olddefbase);
     }
 
+finally_oldvalue:
     extensions_lock_release();
     if (key != NULL) {
         hashtable_destroy_str(key);
@@ -1583,11 +1534,11 @@ switch_to_main_interpreter(PyThreadState *tstate)
     if (_Py_IsMainInterpreter(tstate->interp)) {
         return tstate;
     }
-    PyThreadState *main_tstate = PyThreadState_New(_PyInterpreterState_Main());
+    PyThreadState *main_tstate = _PyThreadState_NewBound(
+            _PyInterpreterState_Main(), _PyThreadState_WHENCE_EXEC);
     if (main_tstate == NULL) {
         return NULL;
     }
-    main_tstate->_whence = _PyThreadState_WHENCE_EXEC;
 #ifndef NDEBUG
     PyThreadState *old_tstate = PyThreadState_Swap(main_tstate);
     assert(old_tstate == tstate);
@@ -1597,6 +1548,35 @@ switch_to_main_interpreter(PyThreadState *tstate)
     return main_tstate;
 }
 
+static void
+switch_back_from_main_interpreter(PyThreadState *tstate,
+                                  PyThreadState *main_tstate,
+                                  PyObject *tempobj)
+{
+    assert(main_tstate == PyThreadState_GET());
+    assert(_Py_IsMainInterpreter(main_tstate->interp));
+    assert(tstate->interp != main_tstate->interp);
+
+    /* Handle any exceptions, which we cannot propagate directly
+     * to the subinterpreter. */
+    if (PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
+            /* We trust it will be caught again soon. */
+            PyErr_Clear();
+        }
+        else {
+            /* Printing the exception should be sufficient. */
+            PyErr_PrintEx(0);
+        }
+    }
+
+    Py_XDECREF(tempobj);
+
+    PyThreadState_Clear(main_tstate);
+    (void)PyThreadState_Swap(tstate);
+    PyThreadState_Delete(main_tstate);
+}
+
 static PyObject *
 get_core_module_dict(PyInterpreterState *interp,
                      PyObject *name, PyObject *path)
@@ -1616,6 +1596,7 @@ get_core_module_dict(PyInterpreterState *interp,
     return NULL;
 }
 
+#ifndef NDEBUG
 static inline int
 is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
 {
@@ -1633,7 +1614,6 @@ is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
 }
 
 
-#ifndef NDEBUG
 static _Py_ext_module_kind
 _get_extension_kind(PyModuleDef *def, bool check_size)
 {
@@ -2032,10 +2012,22 @@ import_run_extension(PyThreadState *tstate, PyModInitFunction p0,
         if (res.kind == _Py_ext_module_kind_SINGLEPHASE) {
             /* Remember the filename as the __file__ attribute */
             if (info->filename != NULL) {
+                PyObject *filename = NULL;
+                if (switched) {
+                    // The original filename may be allocated by subinterpreter's
+                    // obmalloc, so we create a copy here.
+                    filename = _PyUnicode_Copy(info->filename);
+                    if (filename == NULL) {
+                        return NULL;
+                    }
+                } else {
+                    filename = Py_NewRef(info->filename);
+                }
                 // XXX There's a refleak somewhere with the filename.
-                // Until we can track it down, we intern it.
-                PyObject *filename = Py_NewRef(info->filename);
-                PyUnicode_InternInPlace(&filename);
+                // Until we can track it down, we immortalize it.
+                PyInterpreterState *interp = _PyInterpreterState_GET();
+                _PyUnicode_InternImmortal(interp, &filename);
+
                 if (PyModule_AddObjectRef(mod, "__file__", filename) < 0) {
                     PyErr_Clear(); /* Not important enough to report */
                 }
@@ -2068,7 +2060,7 @@ import_run_extension(PyThreadState *tstate, PyModInitFunction p0,
                 singlephase.m_init = p0;
             }
             cached = update_global_state_for_extension(
-                    tstate, info->path, info->name, def, &singlephase);
+                    main_tstate, info->path, info->name, def, &singlephase);
             if (cached == NULL) {
                 assert(PyErr_Occurred());
                 goto main_finally;
@@ -2080,27 +2072,10 @@ import_run_extension(PyThreadState *tstate, PyModInitFunction p0,
     /* Switch back to the subinterpreter. */
     if (switched) {
         assert(main_tstate != tstate);
-
-        /* Handle any exceptions, which we cannot propagate directly
-         * to the subinterpreter. */
-        if (PyErr_Occurred()) {
-            if (PyErr_ExceptionMatches(PyExc_MemoryError)) {
-                /* We trust it will be caught again soon. */
-                PyErr_Clear();
-            }
-            else {
-                /* Printing the exception should be sufficient. */
-                PyErr_PrintEx(0);
-            }
-        }
-
+        switch_back_from_main_interpreter(tstate, main_tstate, mod);
         /* Any module we got from the init function will have to be
          * reloaded in the subinterpreter. */
-        Py_CLEAR(mod);
-
-        PyThreadState_Clear(main_tstate);
-        (void)PyThreadState_Swap(tstate);
-        PyThreadState_Delete(main_tstate);
+        mod = NULL;
     }
 
     /*****************************************************************/
@@ -2168,6 +2143,7 @@ import_run_extension(PyThreadState *tstate, PyModInitFunction p0,
 }
 
 
+// Used in _PyImport_ClearExtension; see notes there.
 static int
 clear_singlephase_extension(PyInterpreterState *interp,
                             PyObject *name, PyObject *path)
@@ -2184,7 +2160,7 @@ clear_singlephase_extension(PyInterpreterState *interp,
     /* Clear data set when the module was initially loaded. */
     def->m_base.m_init = NULL;
     Py_CLEAR(def->m_base.m_copy);
-    // We leave m_index alone since there's no reason to reset it.
+    def->m_base.m_index = 0;
 
     /* Clear the PyState_*Module() cache entry. */
     Py_ssize_t index = _get_cached_module_index(cached);
@@ -2194,9 +2170,21 @@ clear_singlephase_extension(PyInterpreterState *interp,
         }
     }
 
+    /* We must use the main interpreter to clean up the cache.
+     * See the note in import_run_extension(). */
+    PyThreadState *tstate = PyThreadState_GET();
+    PyThreadState *main_tstate = switch_to_main_interpreter(tstate);
+    if (main_tstate == NULL) {
+        return -1;
+    }
+
     /* Clear the cached module def. */
     _extensions_cache_delete(path, name);
 
+    if (main_tstate != tstate) {
+        switch_back_from_main_interpreter(tstate, main_tstate, NULL);
+    }
+
     return 0;
 }
 
@@ -4112,11 +4100,6 @@ _PyImport_FiniCore(PyInterpreterState *interp)
         PyErr_FormatUnraisable("Exception ignored on clearing sys.modules");
     }
 
-    if (IMPORT_LOCK(interp) != NULL) {
-        PyThread_free_lock(IMPORT_LOCK(interp));
-        IMPORT_LOCK(interp) = NULL;
-    }
-
     _PyImport_ClearCore(interp);
 }
 
@@ -4249,8 +4232,7 @@ _imp_lock_held_impl(PyObject *module)
 /*[clinic end generated code: output=8b89384b5e1963fc input=9b088f9b217d9bdf]*/
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    return PyBool_FromLong(
-            IMPORT_LOCK_THREAD(interp) != PYTHREAD_INVALID_THREAD_ID);
+    return PyBool_FromLong(PyMutex_IsLocked(&IMPORT_LOCK(interp).mutex));
 }
 
 /*[clinic input]
@@ -4284,11 +4266,12 @@ _imp_release_lock_impl(PyObject *module)
 /*[clinic end generated code: output=7faab6d0be178b0a input=934fb11516dd778b]*/
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
-    if (_PyImport_ReleaseLock(interp) < 0) {
+    if (!_PyRecursiveMutex_IsLockedByCurrentThread(&IMPORT_LOCK(interp))) {
         PyErr_SetString(PyExc_RuntimeError,
                         "not holding the import lock");
         return NULL;
     }
+    _PyImport_ReleaseLock(interp);
     Py_RETURN_NONE;
 }
 
@@ -4462,7 +4445,7 @@ _imp_find_frozen_impl(PyObject *module, PyObject *name, int withdata)
     if (info.origname != NULL && info.origname[0] != '\0') {
         origname = PyUnicode_FromString(info.origname);
         if (origname == NULL) {
-            Py_DECREF(data);
+            Py_XDECREF(data);
             return NULL;
         }
     }
diff --git a/Python/importdl.c b/Python/importdl.c
index 7c42d37283c495..b1a6fcc82234ae 100644
--- a/Python/importdl.c
+++ b/Python/importdl.c
@@ -8,6 +8,8 @@
 #include "pycore_pystate.h"
 #include "pycore_runtime.h"
 
+#include "pycore_importdl.h"
+
 /* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is
    supported on this platform. configure will then compile and link in one
    of the dynload_*.c files, as appropriate. We will call a function in
@@ -15,8 +17,6 @@
 */
 #ifdef HAVE_DYNAMIC_LOADING
 
-#include "pycore_importdl.h"
-
 #ifdef MS_WINDOWS
 extern dl_funcptr _PyImport_FindSharedFuncptrWindows(const char *prefix,
                                                      const char *shortname,
@@ -28,6 +28,8 @@ extern dl_funcptr _PyImport_FindSharedFuncptr(const char *prefix,
                                               const char *pathname, FILE *fp);
 #endif
 
+#endif /* HAVE_DYNAMIC_LOADING */
+
 
 /***********************************/
 /* module info to use when loading */
@@ -205,6 +207,7 @@ _Py_ext_module_loader_info_init_for_core(
     return 0;
 }
 
+#ifdef HAVE_DYNAMIC_LOADING
 int
 _Py_ext_module_loader_info_init_from_spec(
                             struct _Py_ext_module_loader_info *p_info,
@@ -226,6 +229,7 @@ _Py_ext_module_loader_info_init_from_spec(
     Py_DECREF(filename);
     return err;
 }
+#endif /* HAVE_DYNAMIC_LOADING */
 
 
 /********************************/
@@ -372,6 +376,7 @@ _Py_ext_module_loader_result_apply_error(
 /* getting/running the module init function */
 /********************************************/
 
+#ifdef HAVE_DYNAMIC_LOADING
 PyModInitFunction
 _PyImport_GetModInitFunc(struct _Py_ext_module_loader_info *info,
                          FILE *fp)
@@ -406,6 +411,7 @@ _PyImport_GetModInitFunc(struct _Py_ext_module_loader_info *info,
 
     return (PyModInitFunction)exportfunc;
 }
+#endif /* HAVE_DYNAMIC_LOADING */
 
 int
 _PyImport_RunModInitFunc(PyModInitFunction p0,
@@ -513,5 +519,3 @@ _PyImport_RunModInitFunc(PyModInitFunction p0,
     p_res->err = &p_res->_err;
     return -1;
 }
-
-#endif /* HAVE_DYNAMIC_LOADING */
diff --git a/Python/initconfig.c b/Python/initconfig.c
index a28c08c5318ddc..5746416c826522 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -129,6 +129,10 @@ static const PyConfigSpec PYCONFIG_SPEC[] = {
 #ifdef Py_DEBUG
     SPEC(run_presite, WSTR_OPT),
 #endif
+#ifdef __APPLE__
+    SPEC(use_system_logger, BOOL),
+#endif
+
     {NULL, 0, 0},
 };
 
@@ -744,6 +748,9 @@ config_check_consistency(const PyConfig *config)
     assert(config->cpu_count != 0);
     // config->use_frozen_modules is initialized later
     // by _PyConfig_InitImportConfig().
+#ifdef __APPLE__
+    assert(config->use_system_logger >= 0);
+#endif
 #ifdef Py_STATS
     assert(config->_pystats >= 0);
 #endif
@@ -846,6 +853,9 @@ _PyConfig_InitCompatConfig(PyConfig *config)
     config->_is_python_build = 0;
     config->code_debug_ranges = 1;
     config->cpu_count = -1;
+#ifdef __APPLE__
+    config->use_system_logger = 0;
+#endif
 #ifdef Py_GIL_DISABLED
     config->enable_gil = _PyConfig_GIL_DEFAULT;
 #endif
@@ -874,6 +884,9 @@ config_init_defaults(PyConfig *config)
 #ifdef MS_WINDOWS
     config->legacy_windows_stdio = 0;
 #endif
+#ifdef __APPLE__
+    config->use_system_logger = 0;
+#endif
 }
 
 
@@ -909,6 +922,9 @@ PyConfig_InitIsolatedConfig(PyConfig *config)
 #ifdef MS_WINDOWS
     config->legacy_windows_stdio = 0;
 #endif
+#ifdef __APPLE__
+    config->use_system_logger = 0;
+#endif
 }
 
 
@@ -1542,20 +1558,24 @@ config_wstr_to_int(const wchar_t *wstr, int *result)
 static PyStatus
 config_read_gil(PyConfig *config, size_t len, wchar_t first_char)
 {
-#ifdef Py_GIL_DISABLED
     if (len == 1 && first_char == L'0') {
+#ifdef Py_GIL_DISABLED
         config->enable_gil = _PyConfig_GIL_DISABLE;
+#else
+        return _PyStatus_ERR("Disabling the GIL is not supported by this build");
+#endif
     }
     else if (len == 1 && first_char == L'1') {
+#ifdef Py_GIL_DISABLED
         config->enable_gil = _PyConfig_GIL_ENABLE;
+#else
+        return _PyStatus_OK();
+#endif
     }
     else {
         return _PyStatus_ERR("PYTHON_GIL / -X gil must be \"0\" or \"1\"");
     }
     return _PyStatus_OK();
-#else
-    return _PyStatus_ERR("PYTHON_GIL / -X gil are not supported by this build");
-#endif
 }
 
 static PyStatus
diff --git a/Python/instrumentation.c b/Python/instrumentation.c
index 77d3489afcfc72..3481b5df14288b 100644
--- a/Python/instrumentation.c
+++ b/Python/instrumentation.c
@@ -893,7 +893,7 @@ remove_per_instruction_tools(PyCodeObject * code, int offset, int tools)
 static int
 call_one_instrument(
     PyInterpreterState *interp, PyThreadState *tstate, PyObject **args,
-    Py_ssize_t nargsf, int8_t tool, int event)
+    size_t nargsf, int8_t tool, int event)
 {
     assert(0 <= tool && tool < 8);
     assert(tstate->tracing == 0);
@@ -1084,7 +1084,7 @@ call_instrumentation_vector(
     args[2] = offset_obj;
     PyInterpreterState *interp = tstate->interp;
     uint8_t tools = get_tools_for_instruction(code, interp, offset, event);
-    Py_ssize_t nargsf = nargs | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    size_t nargsf = (size_t) nargs | PY_VECTORCALL_ARGUMENTS_OFFSET;
     PyObject **callargs = &args[1];
     int err = 0;
     while (tools) {
@@ -1344,7 +1344,6 @@ int
 _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame* frame, _Py_CODEUNIT *instr)
 {
     PyCodeObject *code = _PyFrame_GetCode(frame);
-    assert(debug_check_sanity(tstate->interp, code));
     int offset = (int)(instr - _PyCode_CODE(code));
     _PyCoMonitoringData *instrumentation_data = code->_co_monitoring;
     assert(instrumentation_data->per_instruction_opcodes);
@@ -1352,6 +1351,7 @@ _Py_call_instrumentation_instruction(PyThreadState *tstate, _PyInterpreterFrame*
     if (tstate->tracing) {
         return next_opcode;
     }
+    assert(debug_check_sanity(tstate->interp, code));
     PyInterpreterState *interp = tstate->interp;
     uint8_t tools = instrumentation_data->per_instruction_tools != NULL ?
         instrumentation_data->per_instruction_tools[offset] :
@@ -1977,7 +1977,7 @@ _PyMonitoring_SetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEvent
     }
 
     int res;
-    LOCK_CODE(code);
+    _PyEval_StopTheWorld(interp);
     if (allocate_instrumentation_data(code)) {
         res = -1;
         goto done;
@@ -1994,7 +1994,7 @@ _PyMonitoring_SetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringEvent
     res = force_instrument_lock_held(code, interp);
 
 done:
-    UNLOCK_CODE();
+    _PyEval_StartTheWorld(interp);
     return res;
 }
 
@@ -2439,13 +2439,15 @@ capi_call_instrumentation(PyMonitoringState *state, PyObject *codelike, int32_t
         PyErr_SetString(PyExc_ValueError, "offset must be non-negative");
         return -1;
     }
-    PyObject *offset_obj = PyLong_FromLong(offset);
-    if (offset_obj == NULL) {
-        return -1;
+    if (event != PY_MONITORING_EVENT_LINE) {
+        PyObject *offset_obj = PyLong_FromLong(offset);
+        if (offset_obj == NULL) {
+            return -1;
+        }
+        assert(args[2] == NULL);
+        args[2] = offset_obj;
     }
-    assert(args[2] == NULL);
-    args[2] = offset_obj;
-    Py_ssize_t nargsf = nargs | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    size_t nargsf = (size_t) nargs | PY_VECTORCALL_ARGUMENTS_OFFSET;
     PyObject **callargs = &args[1];
     int err = 0;
 
@@ -2565,8 +2567,8 @@ _PyMonitoring_FireLineEvent(PyMonitoringState *state, PyObject *codelike, int32_
     if (lno == NULL) {
         return -1;
     }
-    PyObject *args[4] = { NULL, NULL, NULL, lno };
-    int res= capi_call_instrumentation(state, codelike, offset, args, 3,
+    PyObject *args[3] = { NULL, NULL, lno };
+    int res= capi_call_instrumentation(state, codelike, offset, args, 2,
                                        PY_MONITORING_EVENT_LINE);
     Py_DECREF(lno);
     return res;
@@ -2622,7 +2624,7 @@ exception_event_teardown(int err, PyObject *exc) {
     }
     else {
         assert(PyErr_Occurred());
-        Py_DECREF(exc);
+        Py_XDECREF(exc);
     }
     return err;
 }
@@ -2712,15 +2714,18 @@ _PyMonitoring_FirePyUnwindEvent(PyMonitoringState *state, PyObject *codelike, in
 }
 
 int
-_PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset)
+_PyMonitoring_FireStopIterationEvent(PyMonitoringState *state, PyObject *codelike, int32_t offset, PyObject *value)
 {
     int event = PY_MONITORING_EVENT_STOP_ITERATION;
     assert(state->active);
+    assert(!PyErr_Occurred());
+    PyErr_SetObject(PyExc_StopIteration, value);
     PyObject *exc;
     if (exception_event_setup(&exc, event) < 0) {
         return -1;
     }
     PyObject *args[4] = { NULL, NULL, NULL, exc };
     int err = capi_call_instrumentation(state, codelike, offset, args, 3, event);
-    return exception_event_teardown(err, exc);
+    Py_DECREF(exc);
+    return exception_event_teardown(err, NULL);
 }
diff --git a/Python/jit.c b/Python/jit.c
index 7c316a410dda6a..d0c0d24f4539e2 100644
--- a/Python/jit.c
+++ b/Python/jit.c
@@ -5,6 +5,7 @@
 #include "pycore_abstract.h"
 #include "pycore_call.h"
 #include "pycore_ceval.h"
+#include "pycore_critical_section.h"
 #include "pycore_dict.h"
 #include "pycore_intrinsics.h"
 #include "pycore_long.h"
diff --git a/Python/legacy_tracing.c b/Python/legacy_tracing.c
index 74118030925e3e..9cc3af1f5e162c 100644
--- a/Python/legacy_tracing.c
+++ b/Python/legacy_tracing.c
@@ -121,6 +121,19 @@ sys_profile_call_or_return(
         Py_DECREF(meth);
         return res;
     }
+    else if (Py_TYPE(callable) == &PyMethod_Type) {
+        // CALL instruction will grab the function from the method,
+        // so if the function is a C function, the return event will
+        // be emitted. However, CALL event happens before CALL
+        // instruction, so we need to handle this case here.
+        PyObject* func = PyMethod_GET_FUNCTION(callable);
+        if (func == NULL) {
+            return NULL;
+        }
+        if (PyCFunction_Check(func)) {
+            return call_profile_func(self, func);
+        }
+    }
     Py_RETURN_NONE;
 }
 
@@ -605,7 +618,7 @@ _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg)
             (1 << PY_MONITORING_EVENT_STOP_ITERATION);
 
         PyFrameObject* frame = PyEval_GetFrame();
-        if (frame->f_trace_opcodes) {
+        if (frame && frame->f_trace_opcodes) {
             int ret = _PyEval_SetOpcodeTrace(frame, true);
             if (ret != 0) {
                 return ret;
diff --git a/Python/lock.c b/Python/lock.c
index 239e56ad929ea3..57675fe1873fa2 100644
--- a/Python/lock.c
+++ b/Python/lock.c
@@ -47,18 +47,12 @@ _Py_yield(void)
 #endif
 }
 
-void
-_PyMutex_LockSlow(PyMutex *m)
-{
-    _PyMutex_LockTimed(m, -1, _PY_LOCK_DETACH);
-}
-
 PyLockStatus
 _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
 {
-    uint8_t v = _Py_atomic_load_uint8_relaxed(&m->v);
+    uint8_t v = _Py_atomic_load_uint8_relaxed(&m->_bits);
     if ((v & _Py_LOCKED) == 0) {
-        if (_Py_atomic_compare_exchange_uint8(&m->v, &v, v|_Py_LOCKED)) {
+        if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Py_LOCKED)) {
             return PY_LOCK_ACQUIRED;
         }
     }
@@ -83,7 +77,7 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
     for (;;) {
         if ((v & _Py_LOCKED) == 0) {
             // The lock is unlocked. Try to grab it.
-            if (_Py_atomic_compare_exchange_uint8(&m->v, &v, v|_Py_LOCKED)) {
+            if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Py_LOCKED)) {
                 return PY_LOCK_ACQUIRED;
             }
             continue;
@@ -104,17 +98,17 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
         if (!(v & _Py_HAS_PARKED)) {
             // We are the first waiter. Set the _Py_HAS_PARKED flag.
             newv = v | _Py_HAS_PARKED;
-            if (!_Py_atomic_compare_exchange_uint8(&m->v, &v, newv)) {
+            if (!_Py_atomic_compare_exchange_uint8(&m->_bits, &v, newv)) {
                 continue;
             }
         }
 
-        int ret = _PyParkingLot_Park(&m->v, &newv, sizeof(newv), timeout,
+        int ret = _PyParkingLot_Park(&m->_bits, &newv, sizeof(newv), timeout,
                                      &entry, (flags & _PY_LOCK_DETACH) != 0);
         if (ret == Py_PARK_OK) {
             if (entry.handed_off) {
                 // We own the lock now.
-                assert(_Py_atomic_load_uint8_relaxed(&m->v) & _Py_LOCKED);
+                assert(_Py_atomic_load_uint8_relaxed(&m->_bits) & _Py_LOCKED);
                 return PY_LOCK_ACQUIRED;
             }
         }
@@ -136,7 +130,7 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
             }
         }
 
-        v = _Py_atomic_load_uint8_relaxed(&m->v);
+        v = _Py_atomic_load_uint8_relaxed(&m->_bits);
     }
 }
 
@@ -158,13 +152,13 @@ mutex_unpark(PyMutex *m, struct mutex_entry *entry, int has_more_waiters)
             v |= _Py_HAS_PARKED;
         }
     }
-    _Py_atomic_store_uint8(&m->v, v);
+    _Py_atomic_store_uint8(&m->_bits, v);
 }
 
 int
 _PyMutex_TryUnlock(PyMutex *m)
 {
-    uint8_t v = _Py_atomic_load_uint8(&m->v);
+    uint8_t v = _Py_atomic_load_uint8(&m->_bits);
     for (;;) {
         if ((v & _Py_LOCKED) == 0) {
             // error: the mutex is not locked
@@ -172,24 +166,16 @@ _PyMutex_TryUnlock(PyMutex *m)
         }
         else if ((v & _Py_HAS_PARKED)) {
             // wake up a single thread
-            _PyParkingLot_Unpark(&m->v, (_Py_unpark_fn_t *)mutex_unpark, m);
+            _PyParkingLot_Unpark(&m->_bits, (_Py_unpark_fn_t *)mutex_unpark, m);
             return 0;
         }
-        else if (_Py_atomic_compare_exchange_uint8(&m->v, &v, _Py_UNLOCKED)) {
+        else if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, _Py_UNLOCKED)) {
             // fast-path: no waiters
             return 0;
         }
     }
 }
 
-void
-_PyMutex_UnlockSlow(PyMutex *m)
-{
-    if (_PyMutex_TryUnlock(m) < 0) {
-        Py_FatalError("unlocking mutex that is not locked");
-    }
-}
-
 // _PyRawMutex stores a linked list of `struct raw_mutex_entry`, one for each
 // thread waiting on the mutex, directly in the mutex itself.
 struct raw_mutex_entry {
@@ -366,6 +352,48 @@ _PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
     }
 }
 
+static int
+recursive_mutex_is_owned_by(_PyRecursiveMutex *m, PyThread_ident_t tid)
+{
+    return _Py_atomic_load_ullong_relaxed(&m->thread) == tid;
+}
+
+int
+_PyRecursiveMutex_IsLockedByCurrentThread(_PyRecursiveMutex *m)
+{
+    return recursive_mutex_is_owned_by(m, PyThread_get_thread_ident_ex());
+}
+
+void
+_PyRecursiveMutex_Lock(_PyRecursiveMutex *m)
+{
+    PyThread_ident_t thread = PyThread_get_thread_ident_ex();
+    if (recursive_mutex_is_owned_by(m, thread)) {
+        m->level++;
+        return;
+    }
+    PyMutex_Lock(&m->mutex);
+    _Py_atomic_store_ullong_relaxed(&m->thread, thread);
+    assert(m->level == 0);
+}
+
+void
+_PyRecursiveMutex_Unlock(_PyRecursiveMutex *m)
+{
+    PyThread_ident_t thread = PyThread_get_thread_ident_ex();
+    if (!recursive_mutex_is_owned_by(m, thread)) {
+        Py_FatalError("unlocking a recursive mutex that is not owned by the"
+                      " current thread");
+    }
+    if (m->level > 0) {
+        m->level--;
+        return;
+    }
+    assert(m->level == 0);
+    _Py_atomic_store_ullong_relaxed(&m->thread, 0);
+    PyMutex_Unlock(&m->mutex);
+}
+
 #define _Py_WRITE_LOCKED 1
 #define _PyRWMutex_READER_SHIFT 2
 #define _Py_RWMUTEX_MAX_READERS (UINTPTR_MAX >> _PyRWMutex_READER_SHIFT)
@@ -486,6 +514,7 @@ void _PySeqLock_LockWrite(_PySeqLock *seqlock)
         }
         else if (_Py_atomic_compare_exchange_uint32(&seqlock->sequence, &prev, prev + 1)) {
             // We've locked the cache
+            _Py_atomic_fence_release();
             break;
         }
         else {
@@ -519,26 +548,45 @@ uint32_t _PySeqLock_BeginRead(_PySeqLock *seqlock)
     return sequence;
 }
 
-uint32_t _PySeqLock_EndRead(_PySeqLock *seqlock, uint32_t previous)
+int _PySeqLock_EndRead(_PySeqLock *seqlock, uint32_t previous)
 {
-    // Synchronize again and validate that the entry hasn't been updated
-    // while we were readying the values.
-     if (_Py_atomic_load_uint32_acquire(&seqlock->sequence) == previous) {
+    // gh-121368: We need an explicit acquire fence here to ensure that
+    // this load of the sequence number is not reordered before any loads
+    // within the read lock.
+    _Py_atomic_fence_acquire();
+
+    if (_Py_atomic_load_uint32_relaxed(&seqlock->sequence) == previous) {
         return 1;
-     }
+    }
 
-     _Py_yield();
-     return 0;
+    _Py_yield();
+    return 0;
 }
 
-uint32_t _PySeqLock_AfterFork(_PySeqLock *seqlock)
+int _PySeqLock_AfterFork(_PySeqLock *seqlock)
 {
     // Synchronize again and validate that the entry hasn't been updated
     // while we were readying the values.
-     if (SEQLOCK_IS_UPDATING(seqlock->sequence)) {
+    if (SEQLOCK_IS_UPDATING(seqlock->sequence)) {
         seqlock->sequence = 0;
         return 1;
-     }
+    }
 
-     return 0;
+    return 0;
+}
+
+#undef PyMutex_Lock
+void
+PyMutex_Lock(PyMutex *m)
+{
+    _PyMutex_LockTimed(m, -1, _PY_LOCK_DETACH);
+}
+
+#undef PyMutex_Unlock
+void
+PyMutex_Unlock(PyMutex *m)
+{
+    if (_PyMutex_TryUnlock(m) < 0) {
+        Py_FatalError("unlocking mutex that is not locked");
+    }
 }
diff --git a/Python/marshal.c b/Python/marshal.c
index ca22d6d679a230..76fa701b541c6d 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -14,6 +14,7 @@
 #include "pycore_long.h"             // _PyLong_DigitCount
 #include "pycore_setobject.h"        // _PySet_NextEntry()
 #include "marshal.h"                 // Py_MARSHAL_VERSION
+#include "pycore_pystate.h"          // _PyInterpreterState_GET()
 
 #ifdef __APPLE__
 #  include "TargetConditionals.h"
@@ -1184,8 +1185,12 @@ r_object(RFILE *p)
             v = PyUnicode_FromKindAndData(PyUnicode_1BYTE_KIND, ptr, n);
             if (v == NULL)
                 break;
-            if (is_interned)
-                PyUnicode_InternInPlace(&v);
+            if (is_interned) {
+                // marshal is meant to serialize .pyc files with code
+                // objects, and code-related strings are currently immortal.
+                PyInterpreterState *interp = _PyInterpreterState_GET();
+                _PyUnicode_InternImmortal(interp, &v);
+            }
             retval = v;
             R_REF(retval);
             break;
@@ -1217,8 +1222,12 @@ r_object(RFILE *p)
         }
         if (v == NULL)
             break;
-        if (is_interned)
-            PyUnicode_InternInPlace(&v);
+        if (is_interned) {
+            // marshal is meant to serialize .pyc files with code
+            // objects, and code-related strings are currently immortal.
+            PyInterpreterState *interp = _PyInterpreterState_GET();
+            _PyUnicode_InternImmortal(interp, &v);
+        }
         retval = v;
         R_REF(retval);
         break;
@@ -1918,7 +1927,7 @@ machine architecture issues.\n\
 Not all Python object types are supported; in general, only objects\n\
 whose value is independent from a particular invocation of Python can be\n\
 written and read by this module. The following types are supported:\n\
-None, integers, floating point numbers, strings, bytes, bytearrays,\n\
+None, integers, floating-point numbers, strings, bytes, bytearrays,\n\
 tuples, lists, sets, dictionaries, and code objects, where it\n\
 should be understood that tuples, lists and dictionaries are only\n\
 supported as long as the values contained therein are themselves\n\
@@ -1929,7 +1938,7 @@ Variables:\n\
 \n\
 version -- indicates the format that the module uses. Version 0 is the\n\
     historical format, version 1 shares interned strings and version 2\n\
-    uses a binary format for floating point numbers.\n\
+    uses a binary format for floating-point numbers.\n\
     Version 3 shares common object references (New in version 3.4).\n\
 \n\
 Functions:\n\
diff --git a/Python/optimizer.c b/Python/optimizer.c
index 8be2c0ffbd78e9..50ab71c5c01324 100644
--- a/Python/optimizer.c
+++ b/Python/optimizer.c
@@ -12,7 +12,6 @@
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_uop_ids.h"
 #include "pycore_jit.h"
-#include "cpython/optimizer.h"
 #include <stdbool.h>
 #include <stdint.h>
 #include <stddef.h>
@@ -105,18 +104,6 @@ insert_executor(PyCodeObject *code, _Py_CODEUNIT *instr, int index, _PyExecutorO
     instr->op.arg = index;
 }
 
-int
-PyUnstable_Replace_Executor(PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject *new)
-{
-    if (instr->op.code != ENTER_EXECUTOR) {
-        PyErr_Format(PyExc_ValueError, "No executor to replace");
-        return -1;
-    }
-    int index = instr->op.arg;
-    assert(index >= 0);
-    insert_executor(code, instr, index, new);
-    return 0;
-}
 
 static int
 never_optimize(
@@ -144,7 +131,7 @@ static _PyOptimizerObject _PyOptimizer_Default = {
 };
 
 _PyOptimizerObject *
-PyUnstable_GetOptimizer(void)
+_Py_GetOptimizer(void)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     if (interp->optimizer == &_PyOptimizer_Default) {
@@ -195,7 +182,7 @@ _Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject *optimizer)
 }
 
 int
-PyUnstable_SetOptimizer(_PyOptimizerObject *optimizer)
+_Py_SetTier2Optimizer(_PyOptimizerObject *optimizer)
 {
     PyInterpreterState *interp = _PyInterpreterState_GET();
     _PyOptimizerObject *old = _Py_SetOptimizer(interp, optimizer);
@@ -240,7 +227,7 @@ _PyOptimizer_Optimize(
 }
 
 _PyExecutorObject *
-PyUnstable_GetExecutor(PyCodeObject *code, int offset)
+_Py_GetExecutor(PyCodeObject *code, int offset)
 {
     int code_len = (int)Py_SIZE(code);
     for (int i = 0 ; i < code_len;) {
@@ -1349,7 +1336,7 @@ PyTypeObject _PyUOpOptimizer_Type = {
 };
 
 PyObject *
-PyUnstable_Optimizer_NewUOpOptimizer(void)
+_PyOptimizer_NewUOpOptimizer(void)
 {
     _PyOptimizerObject *opt = PyObject_New(_PyOptimizerObject, &_PyUOpOptimizer_Type);
     if (opt == NULL) {
@@ -1437,7 +1424,7 @@ PyTypeObject _PyCounterOptimizer_Type = {
 };
 
 PyObject *
-PyUnstable_Optimizer_NewCounter(void)
+_PyOptimizer_NewCounter(void)
 {
     _PyCounterOptimizerObject *opt = (_PyCounterOptimizerObject *)_PyObject_New(&_PyCounterOptimizer_Type);
     if (opt == NULL) {
@@ -1496,7 +1483,7 @@ address_to_hash(void *ptr) {
     uintptr_t addr = (uintptr_t)ptr;
     for (int i = 0; i < SIZEOF_VOID_P; i++) {
         uhash ^= addr & 255;
-        uhash *= (uint64_t)_PyHASH_MULTIPLIER;
+        uhash *= (uint64_t)PyHASH_MULTIPLIER;
         addr >>= 8;
     }
     return uhash;
diff --git a/Python/optimizer_analysis.c b/Python/optimizer_analysis.c
index 842b2e489239af..4f1f4044c88be0 100644
--- a/Python/optimizer_analysis.c
+++ b/Python/optimizer_analysis.c
@@ -21,7 +21,6 @@
 #include "pycore_uop_metadata.h"
 #include "pycore_dict.h"
 #include "pycore_long.h"
-#include "cpython/optimizer.h"
 #include "pycore_optimizer.h"
 #include "pycore_object.h"
 #include "pycore_dict.h"
@@ -411,7 +410,7 @@ optimize_uops(
     if (_Py_uop_abstractcontext_init(ctx) < 0) {
         goto out_of_space;
     }
-    _Py_UOpsAbstractFrame *frame = _Py_uop_frame_new(ctx, co, ctx->n_consumed, 0, curr_stacklen);
+    _Py_UOpsAbstractFrame *frame = _Py_uop_frame_new(ctx, co, curr_stacklen, NULL, 0);
     if (frame == NULL) {
         return -1;
     }
diff --git a/Python/optimizer_bytecodes.c b/Python/optimizer_bytecodes.c
index 928bc03382b8fb..690c9b8bced984 100644
--- a/Python/optimizer_bytecodes.c
+++ b/Python/optimizer_bytecodes.c
@@ -616,17 +616,12 @@ dummy_func(void) {
             argcount++;
         }
 
-        _Py_UopsSymbol **localsplus_start = ctx->n_consumed;
-        int n_locals_already_filled = 0;
-        // Can determine statically, so we interleave the new locals
-        // and make the current stack the new locals.
-        // This also sets up for true call inlining.
+
         if (sym_is_null(self_or_null) || sym_is_not_null(self_or_null)) {
-            localsplus_start = args;
-            n_locals_already_filled = argcount;
+            OUT_OF_SPACE_IF_NULL(new_frame = frame_new(ctx, co, 0, args, argcount));
+        } else {
+            OUT_OF_SPACE_IF_NULL(new_frame = frame_new(ctx, co, 0, NULL, 0));
         }
-        OUT_OF_SPACE_IF_NULL(new_frame =
-                             frame_new(ctx, co, localsplus_start, n_locals_already_filled, 0));
     }
 
     op(_PY_FRAME_GENERAL, (callable, self_or_null, args[oparg] -- new_frame: _Py_UOpsAbstractFrame *)) {
@@ -634,7 +629,6 @@ dummy_func(void) {
         (void)callable;
         (void)self_or_null;
         (void)args;
-        first_valid_check_stack = NULL;
         goto done;
     }
 
diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h
index 2a4efd73d794df..fb7f1edf498705 100644
--- a/Python/optimizer_cases.c.h
+++ b/Python/optimizer_cases.c.h
@@ -815,13 +815,7 @@
             break;
         }
 
-        case _LOAD_FROM_DICT_OR_GLOBALS: {
-            _Py_UopsSymbol *v;
-            v = sym_new_not_null(ctx);
-            if (v == NULL) goto out_of_space;
-            stack_pointer[-1] = v;
-            break;
-        }
+        /* _LOAD_FROM_DICT_OR_GLOBALS is not a viable micro-op for tier 2 */
 
         /* _LOAD_NAME is not a viable micro-op for tier 2 */
 
@@ -1571,7 +1565,6 @@
             (void)callable;
             (void)self_or_null;
             (void)args;
-            first_valid_check_stack = NULL;
             goto done;
             stack_pointer[-2 - oparg] = (_Py_UopsSymbol *)new_frame;
             stack_pointer += -1 - oparg;
@@ -1703,17 +1696,11 @@
                 args--;
                 argcount++;
             }
-            _Py_UopsSymbol **localsplus_start = ctx->n_consumed;
-            int n_locals_already_filled = 0;
-            // Can determine statically, so we interleave the new locals
-            // and make the current stack the new locals.
-            // This also sets up for true call inlining.
             if (sym_is_null(self_or_null) || sym_is_not_null(self_or_null)) {
-                localsplus_start = args;
-                n_locals_already_filled = argcount;
+                OUT_OF_SPACE_IF_NULL(new_frame = frame_new(ctx, co, 0, args, argcount));
+            } else {
+                OUT_OF_SPACE_IF_NULL(new_frame = frame_new(ctx, co, 0, NULL, 0));
             }
-            OUT_OF_SPACE_IF_NULL(new_frame =
-                             frame_new(ctx, co, localsplus_start, n_locals_already_filled, 0));
             stack_pointer[-2 - oparg] = (_Py_UopsSymbol *)new_frame;
             stack_pointer += -1 - oparg;
             break;
diff --git a/Python/optimizer_symbols.c b/Python/optimizer_symbols.c
index 4aeb04fe0405d2..8f855cdb883894 100644
--- a/Python/optimizer_symbols.c
+++ b/Python/optimizer_symbols.c
@@ -2,7 +2,6 @@
 
 #include "Python.h"
 
-#include "cpython/optimizer.h"
 #include "pycore_code.h"
 #include "pycore_frame.h"
 #include "pycore_long.h"
@@ -303,9 +302,9 @@ _Py_UOpsAbstractFrame *
 _Py_uop_frame_new(
     _Py_UOpsContext *ctx,
     PyCodeObject *co,
-    _Py_UopsSymbol **localsplus_start,
-    int n_locals_already_filled,
-    int curr_stackentries)
+    int curr_stackentries,
+    _Py_UopsSymbol **args,
+    int arg_len)
 {
     assert(ctx->curr_frame_depth < MAX_ABSTRACT_FRAME_DEPTH);
     _Py_UOpsAbstractFrame *frame = &ctx->frames[ctx->curr_frame_depth];
@@ -313,21 +312,21 @@ _Py_uop_frame_new(
     frame->stack_len = co->co_stacksize;
     frame->locals_len = co->co_nlocalsplus;
 
-    frame->locals = localsplus_start;
+    frame->locals = ctx->n_consumed;
     frame->stack = frame->locals + co->co_nlocalsplus;
     frame->stack_pointer = frame->stack + curr_stackentries;
-    ctx->n_consumed = localsplus_start + (co->co_nlocalsplus + co->co_stacksize);
+    ctx->n_consumed = ctx->n_consumed + (co->co_nlocalsplus + co->co_stacksize);
     if (ctx->n_consumed >= ctx->limit) {
         return NULL;
     }
 
-
     // Initialize with the initial state of all local variables
-    for (int i = n_locals_already_filled; i < co->co_nlocalsplus; i++) {
+    for (int i = 0; i < arg_len; i++) {
+        frame->locals[i] = args[i];
+    }
+
+    for (int i = arg_len; i < co->co_nlocalsplus; i++) {
         _Py_UopsSymbol *local = _Py_uop_sym_new_unknown(ctx);
-        if (local == NULL) {
-            return NULL;
-        }
         frame->locals[i] = local;
     }
 
@@ -335,9 +334,6 @@ _Py_uop_frame_new(
     // Initialize the stack as well
     for (int i = 0; i < curr_stackentries; i++) {
         _Py_UopsSymbol *stackvar = _Py_uop_sym_new_unknown(ctx);
-        if (stackvar == NULL) {
-            return NULL;
-        }
         frame->stack[i] = stackvar;
     }
 
diff --git a/Python/parking_lot.c b/Python/parking_lot.c
index e2def9e249cd56..a7e9760e35d87a 100644
--- a/Python/parking_lot.c
+++ b/Python/parking_lot.c
@@ -102,7 +102,14 @@ _PySemaphore_PlatformWait(_PySemaphore *sema, PyTime_t timeout)
         millis = INFINITE;
     }
     else {
-        millis = (DWORD) (timeout / 1000000);
+        PyTime_t div = _PyTime_AsMilliseconds(timeout, _PyTime_ROUND_TIMEOUT);
+        // Prevent overflow with clamping the result
+        if ((PyTime_t)PY_DWORD_MAX < div) {
+            millis = PY_DWORD_MAX;
+        }
+        else {
+            millis = (DWORD) div;
+        }
     }
     wait = WaitForSingleObjectEx(sema->platform_sem, millis, FALSE);
     if (wait == WAIT_OBJECT_0) {
@@ -119,7 +126,7 @@ _PySemaphore_PlatformWait(_PySemaphore *sema, PyTime_t timeout)
     if (timeout >= 0) {
         struct timespec ts;
 
-#if defined(CLOCK_MONOTONIC) && defined(HAVE_SEM_CLOCKWAIT)
+#if defined(CLOCK_MONOTONIC) && defined(HAVE_SEM_CLOCKWAIT) && !defined(_Py_THREAD_SANITIZER)
         PyTime_t now;
         // silently ignore error: cannot report error to the caller
         (void)PyTime_MonotonicRaw(&now);
diff --git a/Python/perf_jit_trampoline.c b/Python/perf_jit_trampoline.c
index 2a29318b1054a5..0a8945958b4b3c 100644
--- a/Python/perf_jit_trampoline.c
+++ b/Python/perf_jit_trampoline.c
@@ -174,8 +174,8 @@ static const uint8_t DwarfDataRel = 0x30;
 typedef struct {
     unsigned char version;
     unsigned char eh_frame_ptr_enc;
-    unsigned char	fde_count_enc;
-    unsigned char	table_enc;
+    unsigned char fde_count_enc;
+    unsigned char table_enc;
     int32_t eh_frame_ptr;
     int32_t eh_fde_count;
     int32_t from;
diff --git a/Python/pyhash.c b/Python/pyhash.c
index d508d78092a9e7..5263622ff3126d 100644
--- a/Python/pyhash.c
+++ b/Python/pyhash.c
@@ -263,12 +263,12 @@ fnv(const void *src, Py_ssize_t len)
     x ^= (Py_uhash_t) *p << 7;
     while (blocks--) {
         PY_UHASH_CPY(block.bytes, p);
-        x = (_PyHASH_MULTIPLIER * x) ^ block.value;
+        x = (PyHASH_MULTIPLIER * x) ^ block.value;
         p += SIZEOF_PY_UHASH_T;
     }
     /* add remainder */
     for (; remainder > 0; remainder--)
-        x = (_PyHASH_MULTIPLIER * x) ^ (Py_uhash_t) *p++;
+        x = (PyHASH_MULTIPLIER * x) ^ (Py_uhash_t) *p++;
     x ^= (Py_uhash_t) len;
     x ^= (Py_uhash_t) _Py_HashSecret.fnv.suffix;
     if (x == (Py_uhash_t) -1) {
diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index 67bbbd01ca0c48..ba835ef4c848e8 100644
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -32,7 +32,6 @@
 #include "pycore_typevarobject.h" // _Py_clear_generic_types()
 #include "pycore_unicodeobject.h" // _PyUnicode_InitTypes()
 #include "pycore_weakref.h"       // _PyWeakref_GET_REF()
-#include "cpython/optimizer.h"    // _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS
 #include "pycore_obmalloc.h"      // _PyMem_init_obmalloc()
 
 #include "opcode.h"
@@ -44,7 +43,26 @@
 #endif
 
 #if defined(__APPLE__)
+#  include <AvailabilityMacros.h>
+#  include <TargetConditionals.h>
 #  include <mach-o/loader.h>
+// The os_log unified logging APIs were introduced in macOS 10.12, iOS 10.0,
+// tvOS 10.0, and watchOS 3.0;
+#  if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#    define HAS_APPLE_SYSTEM_LOG 1
+#  elif defined(TARGET_OS_OSX) && TARGET_OS_OSX
+#    if defined(MAC_OS_X_VERSION_10_12) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12
+#      define HAS_APPLE_SYSTEM_LOG 1
+#    else
+#      define HAS_APPLE_SYSTEM_LOG 0
+#    endif
+#  else
+#    define HAS_APPLE_SYSTEM_LOG 0
+#  endif
+
+#  if HAS_APPLE_SYSTEM_LOG
+#    include <os/log.h>
+#  endif
 #endif
 
 #ifdef HAVE_SIGNAL_H
@@ -74,7 +92,11 @@ static PyStatus init_sys_streams(PyThreadState *tstate);
 #ifdef __ANDROID__
 static PyStatus init_android_streams(PyThreadState *tstate);
 #endif
+#if defined(__APPLE__) && HAS_APPLE_SYSTEM_LOG
+static PyStatus init_apple_streams(PyThreadState *tstate);
+#endif
 static void wait_for_thread_shutdown(PyThreadState *tstate);
+static void finalize_subinterpreters(void);
 static void call_ll_exitfuncs(_PyRuntimeState *runtime);
 
 /* The following places the `_PyRuntime` structure in a location that can be
@@ -103,7 +125,7 @@ _PyRuntimeState _PyRuntime
 #if defined(__linux__) && (defined(__GNUC__) || defined(__clang__))
 __attribute__ ((section (".PyRuntime")))
 #endif
-= _PyRuntimeState_INIT(_PyRuntime);
+= _PyRuntimeState_INIT(_PyRuntime, _Py_Debug_Cookie);
 _Py_COMP_DIAG_POP
 
 static int runtime_initialized = 0;
@@ -670,6 +692,13 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
         return status;
     }
 
+    // This could be done in init_interpreter() (in pystate.c) if it
+    // didn't depend on interp->feature_flags being set already.
+    status = _PyObject_InitState(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
     // initialize the interp->obmalloc state.  This must be done after
     // the settings are loaded (so that feature_flags are set) but before
     // any calls are made to obmalloc functions.
@@ -677,8 +706,13 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
         return  _PyStatus_NO_MEMORY();
     }
 
+    status = _PyTraceMalloc_Init();
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
     PyThreadState *tstate = _PyThreadState_New(interp,
-                                               _PyThreadState_WHENCE_INTERP);
+                                               _PyThreadState_WHENCE_INIT);
     if (tstate == NULL) {
         return _PyStatus_ERR("can't make first thread");
     }
@@ -1246,6 +1280,14 @@ init_interp_main(PyThreadState *tstate)
         return status;
     }
 #endif
+#if defined(__APPLE__) && HAS_APPLE_SYSTEM_LOG
+    if (config->use_system_logger) {
+        status = init_apple_streams(tstate);
+        if (_PyStatus_EXCEPTION(status)) {
+            return status;
+        }
+    }
+#endif
 
 #ifdef Py_DEBUG
     run_presite(tstate);
@@ -1299,11 +1341,11 @@ init_interp_main(PyThreadState *tstate)
             enabled = *env != '0';
         }
         if (enabled) {
-            PyObject *opt = PyUnstable_Optimizer_NewUOpOptimizer();
+            PyObject *opt = _PyOptimizer_NewUOpOptimizer();
             if (opt == NULL) {
                 return _PyStatus_ERR("can't initialize optimizer");
             }
-            if (PyUnstable_SetOptimizer((_PyOptimizerObject *)opt)) {
+            if (_Py_SetTier2Optimizer((_PyOptimizerObject *)opt)) {
                 return _PyStatus_ERR("can't install optimizer");
             }
             Py_DECREF(opt);
@@ -1818,6 +1860,7 @@ flush_std_files(void)
 static void
 finalize_interp_types(PyInterpreterState *interp)
 {
+    _PyTypes_FiniExtTypes(interp);
     _PyUnicode_FiniTypes(interp);
     _PySys_FiniTypes(interp);
     _PyXI_FiniTypes(interp);
@@ -1861,7 +1904,6 @@ finalize_interp_clear(PyThreadState *tstate)
     _PyXI_Fini(tstate->interp);
     _PyExc_ClearExceptionGroupType(tstate->interp);
     _Py_clear_generic_types(tstate->interp);
-    _PyDtoa_Fini(tstate->interp);
 
     /* Clear interpreter state and all thread states */
     _PyInterpreterState_Clear(tstate);
@@ -1883,6 +1925,9 @@ finalize_interp_clear(PyThreadState *tstate)
 
     finalize_interp_types(tstate->interp);
 
+    /* Finalize dtoa at last so that finalizers calling repr of float doesn't crash */
+    _PyDtoa_Fini(tstate->interp);
+
     /* Free any delayed free requests immediately */
     _PyMem_FiniDelayed(tstate->interp);
 
@@ -1908,20 +1953,73 @@ finalize_interp_delete(PyInterpreterState *interp)
 }
 
 
-int
-Py_FinalizeEx(void)
+/* Conceptually, there isn't a good reason for Py_Finalize()
+   to be called in any other thread than the one where Py_Initialize()
+   was called.  Consequently, it would make sense to fail if the thread
+   or thread state (or interpreter) don't match.  However, such
+   constraints have never been enforced, and, as unlikely as it may be,
+   there may be users relying on the unconstrained behavior.  Thus,
+   we do our best here to accommodate that possibility. */
+
+static PyThreadState *
+resolve_final_tstate(_PyRuntimeState *runtime)
+{
+    PyThreadState *main_tstate = runtime->main_tstate;
+    assert(main_tstate != NULL);
+    assert(main_tstate->thread_id == runtime->main_thread);
+    PyInterpreterState *main_interp = _PyInterpreterState_Main();
+    assert(main_tstate->interp == main_interp);
+
+    PyThreadState *tstate = _PyThreadState_GET();
+    if (_Py_IsMainThread()) {
+        if (tstate != main_tstate) {
+            /* This implies that Py_Finalize() was called while
+               a non-main interpreter was active or while the main
+               tstate was temporarily swapped out with another.
+               Neither case should be allowed, but, until we get around
+               to fixing that (and Py_Exit()), we're letting it go. */
+            (void)PyThreadState_Swap(main_tstate);
+        }
+    }
+    else {
+        /* This is another unfortunate case where Py_Finalize() was
+           called when it shouldn't have been.  We can't simply switch
+           over to the main thread.  At the least, however, we can make
+           sure the main interpreter is active. */
+        if (!_Py_IsMainInterpreter(tstate->interp)) {
+            /* We don't go to the trouble of updating runtime->main_tstate
+               since it will be dead soon anyway. */
+            main_tstate =
+                _PyThreadState_New(main_interp, _PyThreadState_WHENCE_FINI);
+            if (main_tstate != NULL) {
+                _PyThreadState_Bind(main_tstate);
+                (void)PyThreadState_Swap(main_tstate);
+            }
+            else {
+                /* Fall back to the current tstate.  It's better than nothing. */
+                main_tstate = tstate;
+            }
+        }
+    }
+    assert(main_tstate != NULL);
+
+    /* We might want to warn if main_tstate->current_frame != NULL. */
+
+    return main_tstate;
+}
+
+static int
+_Py_Finalize(_PyRuntimeState *runtime)
 {
     int status = 0;
 
-    _PyRuntimeState *runtime = &_PyRuntime;
+    /* Bail out early if already finalized (or never initialized). */
     if (!runtime->initialized) {
         return status;
     }
 
-    /* Get current thread state and interpreter pointer */
-    PyThreadState *tstate = _PyThreadState_GET();
-    // XXX assert(_Py_IsMainInterpreter(tstate->interp));
-    // XXX assert(_Py_IsMainThread());
+    /* Get final thread state pointer. */
+    PyThreadState *tstate = resolve_final_tstate(runtime);
 
     // Block some operations.
     tstate->interp->finalizing = 1;
@@ -1944,6 +2042,8 @@ Py_FinalizeEx(void)
 
     _PyAtExit_Call(tstate->interp);
 
+    assert(_PyThreadState_GET() == tstate);
+
     /* Copy the core config, PyInterpreterState_Delete() free
        the core config memory */
 #ifdef Py_REF_DEBUG
@@ -2024,6 +2124,9 @@ Py_FinalizeEx(void)
     _PyImport_FiniExternal(tstate->interp);
     finalize_modules(tstate);
 
+    /* Clean up any lingering subinterpreters. */
+    finalize_subinterpreters();
+
     /* Print debug stats if any */
     _PyEval_Fini();
 
@@ -2053,7 +2156,7 @@ Py_FinalizeEx(void)
 
     /* Disable tracemalloc after all Python objects have been destroyed,
        so it is possible to use tracemalloc in objects destructor. */
-    _PyTraceMalloc_Fini();
+    _PyTraceMalloc_Stop();
 
     /* Finalize any remaining import state */
     // XXX Move these up to where finalize_modules() is currently.
@@ -2106,6 +2209,8 @@ Py_FinalizeEx(void)
 
     finalize_interp_clear(tstate);
 
+    _PyTraceMalloc_Fini();
+
 #ifdef Py_TRACE_REFS
     /* Display addresses (& refcnts) of all objects still alive.
      * An address can be used to find the repr of the object, printed
@@ -2119,6 +2224,12 @@ Py_FinalizeEx(void)
     }
 #endif /* Py_TRACE_REFS */
 
+#ifdef WITH_PYMALLOC
+    if (malloc_stats) {
+        _PyObject_DebugMallocStats(stderr);
+    }
+#endif
+
     finalize_interp_delete(tstate->interp);
 
 #ifdef Py_REF_DEBUG
@@ -2129,22 +2240,22 @@ Py_FinalizeEx(void)
 #endif
     _Py_FinalizeAllocatedBlocks(runtime);
 
-#ifdef WITH_PYMALLOC
-    if (malloc_stats) {
-        _PyObject_DebugMallocStats(stderr);
-    }
-#endif
-
     call_ll_exitfuncs(runtime);
 
     _PyRuntime_Finalize();
     return status;
 }
 
+int
+Py_FinalizeEx(void)
+{
+    return _Py_Finalize(&_PyRuntime);
+}
+
 void
 Py_Finalize(void)
 {
-    Py_FinalizeEx();
+    (void)_Py_Finalize(&_PyRuntime);
 }
 
 
@@ -2225,6 +2336,13 @@ new_interpreter(PyThreadState **tstate_p,
         goto error;
     }
 
+    // This could be done in init_interpreter() (in pystate.c) if it
+    // didn't depend on interp->feature_flags being set already.
+    status = _PyObject_InitState(interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }
+
     // initialize the interp->obmalloc state.  This must be done after
     // the settings are loaded (so that feature_flags are set) but before
     // any calls are made to obmalloc functions.
@@ -2233,7 +2351,7 @@ new_interpreter(PyThreadState **tstate_p,
         goto error;
     }
 
-    tstate = _PyThreadState_New(interp, _PyThreadState_WHENCE_INTERP);
+    tstate = _PyThreadState_New(interp, _PyThreadState_WHENCE_INIT);
     if (tstate == NULL) {
         status = _PyStatus_NO_MEMORY();
         goto error;
@@ -2356,6 +2474,79 @@ _Py_IsInterpreterFinalizing(PyInterpreterState *interp)
     return finalizing != NULL;
 }
 
+static void
+finalize_subinterpreters(void)
+{
+    PyThreadState *final_tstate = _PyThreadState_GET();
+    PyInterpreterState *main_interp = _PyInterpreterState_Main();
+    assert(final_tstate->interp == main_interp);
+    _PyRuntimeState *runtime = main_interp->runtime;
+    struct pyinterpreters *interpreters = &runtime->interpreters;
+
+    /* Get the first interpreter in the list. */
+    HEAD_LOCK(runtime);
+    PyInterpreterState *interp = interpreters->head;
+    if (interp == main_interp) {
+        interp = interp->next;
+    }
+    HEAD_UNLOCK(runtime);
+
+    /* Bail out if there are no subinterpreters left. */
+    if (interp == NULL) {
+        return;
+    }
+
+    /* Warn the user if they forgot to clean up subinterpreters. */
+    (void)PyErr_WarnEx(
+            PyExc_RuntimeWarning,
+            "remaining subinterpreters; "
+            "destroy them with _interpreters.destroy()",
+            0);
+
+    /* Swap out the current tstate, which we know must belong
+       to the main interpreter. */
+    _PyThreadState_Detach(final_tstate);
+
+    /* Clean up all remaining subinterpreters. */
+    while (interp != NULL) {
+        assert(!_PyInterpreterState_IsRunningMain(interp));
+
+        /* Find the tstate to use for fini.  We assume the interpreter
+           will have at most one tstate at this point. */
+        PyThreadState *tstate = interp->threads.head;
+        if (tstate != NULL) {
+            /* Ideally we would be able to use tstate as-is, and rely
+               on it being in a ready state: no exception set, not
+               running anything (tstate->current_frame), matching the
+               current thread ID (tstate->thread_id).  To play it safe,
+               we always delete it and use a fresh tstate instead. */
+            assert(tstate != final_tstate);
+            _PyThreadState_Attach(tstate);
+            PyThreadState_Clear(tstate);
+            _PyThreadState_Detach(tstate);
+            PyThreadState_Delete(tstate);
+        }
+        tstate = _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_FINI);
+
+        /* Destroy the subinterpreter. */
+        _PyThreadState_Attach(tstate);
+        Py_EndInterpreter(tstate);
+        assert(_PyThreadState_GET() == NULL);
+
+        /* Advance to the next interpreter. */
+        HEAD_LOCK(runtime);
+        interp = interpreters->head;
+        if (interp == main_interp) {
+            interp = interp->next;
+        }
+        HEAD_UNLOCK(runtime);
+    }
+
+    /* Switch back to the main interpreter. */
+    _PyThreadState_Attach(final_tstate);
+}
+
+
 /* Add the __main__ module */
 
 static PyStatus
@@ -2766,6 +2957,69 @@ init_android_streams(PyThreadState *tstate)
 
 #endif  // __ANDROID__
 
+#if defined(__APPLE__) && HAS_APPLE_SYSTEM_LOG
+
+static PyObject *
+apple_log_write_impl(PyObject *self, PyObject *args)
+{
+    int logtype = 0;
+    const char *text = NULL;
+    if (!PyArg_ParseTuple(args, "iy", &logtype, &text)) {
+        return NULL;
+    }
+
+    // Pass the user-provided text through explicit %s formatting
+    // to avoid % literals being interpreted as a formatting directive.
+    os_log_with_type(OS_LOG_DEFAULT, logtype, "%s", text);
+    Py_RETURN_NONE;
+}
+
+
+static PyMethodDef apple_log_write_method = {
+    "apple_log_write", apple_log_write_impl, METH_VARARGS
+};
+
+
+static PyStatus
+init_apple_streams(PyThreadState *tstate)
+{
+    PyStatus status = _PyStatus_OK();
+    PyObject *_apple_support = NULL;
+    PyObject *apple_log_write = NULL;
+    PyObject *result = NULL;
+
+    _apple_support = PyImport_ImportModule("_apple_support");
+    if (_apple_support == NULL) {
+        goto error;
+    }
+
+    apple_log_write = PyCFunction_New(&apple_log_write_method, NULL);
+    if (apple_log_write == NULL) {
+        goto error;
+    }
+
+    // Initialize the logging streams, sending stdout -> Default; stderr -> Error
+    result = PyObject_CallMethod(
+        _apple_support, "init_streams", "Oii",
+        apple_log_write, OS_LOG_TYPE_DEFAULT, OS_LOG_TYPE_ERROR);
+    if (result == NULL) {
+        goto error;
+    }
+    goto done;
+
+error:
+    _PyErr_Print(tstate);
+    status = _PyStatus_ERR("failed to initialize Apple log streams");
+
+done:
+    Py_XDECREF(result);
+    Py_XDECREF(apple_log_write);
+    Py_XDECREF(_apple_support);
+    return status;
+}
+
+#endif  // __APPLE__ && HAS_APPLE_SYSTEM_LOG
+
 
 static void
 _Py_FatalError_DumpTracebacks(int fd, PyInterpreterState *interp,
@@ -2898,6 +3152,30 @@ fatal_error_exit(int status)
     }
 }
 
+static inline int
+acquire_dict_lock_for_dump(PyObject *obj)
+{
+#ifdef Py_GIL_DISABLED
+    PyMutex *mutex = &obj->ob_mutex;
+    if (_PyMutex_LockTimed(mutex, 0, 0) == PY_LOCK_ACQUIRED) {
+        return 1;
+    }
+    return 0;
+#else
+    return 1;
+#endif
+}
+
+static inline void
+release_dict_lock_for_dump(PyObject *obj)
+{
+#ifdef Py_GIL_DISABLED
+    PyMutex *mutex = &obj->ob_mutex;
+    // We can not call PyMutex_Unlock because it's not async-signal-safe.
+    // So not to wake up other threads, we just use a simple atomic store in here.
+    _Py_atomic_store_uint8(&mutex->_bits, _Py_UNLOCKED);
+#endif
+}
 
 // Dump the list of extension modules of sys.modules, excluding stdlib modules
 // (sys.stdlib_module_names), into fd file descriptor.
@@ -2925,13 +3203,18 @@ _Py_DumpExtensionModules(int fd, PyInterpreterState *interp)
     PyObject *stdlib_module_names = NULL;
     if (interp->sysdict != NULL) {
         pos = 0;
-        while (PyDict_Next(interp->sysdict, &pos, &key, &value)) {
+        if (!acquire_dict_lock_for_dump(interp->sysdict)) {
+            // If we cannot acquire the lock, just don't dump the list of extension modules.
+            return;
+        }
+        while (_PyDict_Next(interp->sysdict, &pos, &key, &value, NULL)) {
             if (PyUnicode_Check(key)
                && PyUnicode_CompareWithASCIIString(key, "stdlib_module_names") == 0) {
                 stdlib_module_names = value;
                 break;
             }
         }
+        release_dict_lock_for_dump(interp->sysdict);
     }
     // If we failed to get sys.stdlib_module_names or it's not a frozenset,
     // don't exclude stdlib modules.
@@ -2943,7 +3226,11 @@ _Py_DumpExtensionModules(int fd, PyInterpreterState *interp)
     int header = 1;
     Py_ssize_t count = 0;
     pos = 0;
-    while (PyDict_Next(modules, &pos, &key, &value)) {
+    if (!acquire_dict_lock_for_dump(modules)) {
+        // If we cannot acquire the lock, just don't dump the list of extension modules.
+        return;
+    }
+    while (_PyDict_Next(modules, &pos, &key, &value, NULL)) {
         if (!PyUnicode_Check(key)) {
             continue;
         }
@@ -2984,6 +3271,7 @@ _Py_DumpExtensionModules(int fd, PyInterpreterState *interp)
         _Py_DumpASCII(fd, key);
         count++;
     }
+    release_dict_lock_for_dump(modules);
 
     if (count) {
         PUTS(fd, " (total: ");
@@ -3217,7 +3505,7 @@ Py_Exit(int sts)
     if (tstate != NULL && _PyThreadState_IsRunningMain(tstate)) {
         _PyInterpreterState_SetNotRunningMain(tstate->interp);
     }
-    if (Py_FinalizeEx() < 0) {
+    if (_Py_Finalize(&_PyRuntime) < 0) {
         sts = 120;
     }
 
diff --git a/Python/pystate.c b/Python/pystate.c
index b1e085bb806915..900cba0de15a4e 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -389,7 +389,7 @@ _Py_COMP_DIAG_IGNORE_DEPR_DECLS
    Note that we initialize "initial" relative to _PyRuntime,
    to ensure pre-initialized pointers point to the active
    runtime state (and not "initial"). */
-static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime);
+static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime, "");
 _Py_COMP_DIAG_POP
 
 #define LOCKS_INIT(runtime) \
@@ -454,6 +454,8 @@ _PyRuntimeState_Init(_PyRuntimeState *runtime)
         // Py_Initialize() must be running again.
         // Reset to _PyRuntimeState_INIT.
         memcpy(runtime, &initial, sizeof(*runtime));
+        // Preserve the cookie from the original runtime.
+        memcpy(runtime->debug_offsets.cookie, _Py_Debug_Cookie, 8);
         assert(!runtime->_initialized);
     }
 
@@ -584,9 +586,9 @@ free_interpreter(PyInterpreterState *interp)
         PyMem_RawFree(interp);
     }
 }
-
+#ifndef NDEBUG
 static inline int check_interpreter_whence(long);
-
+#endif
 /* Get the interpreter state to a minimal consistent state.
    Further init happens in pylifecycle.c before it can be used.
    All fields not initialized here are expected to be zeroed out,
@@ -630,10 +632,10 @@ init_interpreter(PyInterpreterState *interp,
     assert(next != NULL || (interp == runtime->interpreters.main));
     interp->next = next;
 
-    PyStatus status = _PyObject_InitState(interp);
-    if (_PyStatus_EXCEPTION(status)) {
-        return status;
-    }
+    interp->threads_preallocated = &interp->_initial_thread;
+
+    // We would call _PyObject_InitState() at this point
+    // if interp->feature_flags were alredy set.
 
     _PyEval_InitState(interp);
     _PyGC_InitState(&interp->gc);
@@ -767,7 +769,6 @@ PyInterpreterState_New(void)
     return interp;
 }
 
-
 static void
 interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
 {
@@ -906,6 +907,8 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
     // XXX Once we have one allocator per interpreter (i.e.
     // per-interpreter GC) we must ensure that all of the interpreter's
     // objects have been cleaned up at the point.
+
+    // If we had a freelist of thread states, we would clear it here.
 }
 
 
@@ -1038,11 +1041,24 @@ _PyInterpreterState_DeleteExceptMain(_PyRuntimeState *runtime)
 }
 #endif
 
+static inline void
+set_main_thread(PyInterpreterState *interp, PyThreadState *tstate)
+{
+    _Py_atomic_store_ptr_relaxed(&interp->threads.main, tstate);
+}
+
+static inline PyThreadState *
+get_main_thread(PyInterpreterState *interp)
+{
+    return _Py_atomic_load_ptr_relaxed(&interp->threads.main);
+}
 
 int
 _PyInterpreterState_SetRunningMain(PyInterpreterState *interp)
 {
-    if (_PyInterpreterState_FailIfRunningMain(interp) < 0) {
+    if (get_main_thread(interp) != NULL) {
+        // In 3.14+ we use _PyErr_SetInterpreterAlreadyRunning().
+        PyErr_SetString(PyExc_InterpreterError, "interpreter already running");
         return -1;
     }
     PyThreadState *tstate = current_fast_get();
@@ -1052,21 +1068,22 @@ _PyInterpreterState_SetRunningMain(PyInterpreterState *interp)
                         "current tstate has wrong interpreter");
         return -1;
     }
-    interp->threads.main = tstate;
+    set_main_thread(interp, tstate);
+
     return 0;
 }
 
 void
 _PyInterpreterState_SetNotRunningMain(PyInterpreterState *interp)
 {
-    assert(interp->threads.main == current_fast_get());
-    interp->threads.main = NULL;
+    assert(get_main_thread(interp) == current_fast_get());
+    set_main_thread(interp, NULL);
 }
 
 int
 _PyInterpreterState_IsRunningMain(PyInterpreterState *interp)
 {
-    if (interp->threads.main != NULL) {
+    if (get_main_thread(interp) != NULL) {
         return 1;
     }
     // Embedders might not know to call _PyInterpreterState_SetRunningMain(),
@@ -1082,18 +1099,16 @@ int
 _PyThreadState_IsRunningMain(PyThreadState *tstate)
 {
     PyInterpreterState *interp = tstate->interp;
-    if (interp->threads.main != NULL) {
-        return tstate == interp->threads.main;
-    }
     // See the note in _PyInterpreterState_IsRunningMain() about
     // possible false negatives here for embedders.
-    return 0;
+    return get_main_thread(interp) == tstate;
 }
 
+// This has been removed in 3.14.
 int
 _PyInterpreterState_FailIfRunningMain(PyInterpreterState *interp)
 {
-    if (interp->threads.main != NULL) {
+    if (get_main_thread(interp) != NULL) {
         PyErr_SetString(PyExc_InterpreterError,
                         "interpreter already running");
         return -1;
@@ -1105,8 +1120,8 @@ void
 _PyInterpreterState_ReinitRunningMain(PyThreadState *tstate)
 {
     PyInterpreterState *interp = tstate->interp;
-    if (interp->threads.main != tstate) {
-        interp->threads.main = NULL;
+    if (get_main_thread(interp) != tstate) {
+        set_main_thread(interp, NULL);
     }
 }
 
@@ -1121,7 +1136,7 @@ _PyInterpreterState_IsReady(PyInterpreterState *interp)
     return interp->_ready;
 }
 
-
+#ifndef NDEBUG
 static inline int
 check_interpreter_whence(long whence)
 {
@@ -1133,6 +1148,7 @@ check_interpreter_whence(long whence)
     }
     return 0;
 }
+#endif
 
 long
 _PyInterpreterState_GetWhence(PyInterpreterState *interp)
@@ -1283,9 +1299,8 @@ _PyInterpreterState_IDDecref(PyInterpreterState *interp)
     PyThread_release_lock(interp->id_mutex);
 
     if (refcount == 0 && interp->requires_idref) {
-        PyThreadState *tstate = _PyThreadState_New(interp,
-                                                   _PyThreadState_WHENCE_INTERP);
-        _PyThreadState_Bind(tstate);
+        PyThreadState *tstate =
+            _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_FINI);
 
         // XXX Possible GILState issues?
         PyThreadState *save_tstate = _PyThreadState_Swap(runtime, tstate);
@@ -1415,22 +1430,45 @@ allocate_chunk(int size_in_bytes, _PyStackChunk* previous)
     return res;
 }
 
+static void
+reset_threadstate(_PyThreadStateImpl *tstate)
+{
+    // Set to _PyThreadState_INIT directly?
+    memcpy(tstate,
+           &initial._main_interpreter._initial_thread,
+           sizeof(*tstate));
+}
+
 static _PyThreadStateImpl *
-alloc_threadstate(void)
+alloc_threadstate(PyInterpreterState *interp)
 {
-    return PyMem_RawCalloc(1, sizeof(_PyThreadStateImpl));
+    _PyThreadStateImpl *tstate;
+
+    // Try the preallocated tstate first.
+    tstate = _Py_atomic_exchange_ptr(&interp->threads_preallocated, NULL);
+
+    // Fall back to the allocator.
+    if (tstate == NULL) {
+        tstate = PyMem_RawCalloc(1, sizeof(_PyThreadStateImpl));
+        if (tstate == NULL) {
+            return NULL;
+        }
+        reset_threadstate(tstate);
+    }
+    return tstate;
 }
 
 static void
 free_threadstate(_PyThreadStateImpl *tstate)
 {
+    PyInterpreterState *interp = tstate->base.interp;
     // The initial thread state of the interpreter is allocated
     // as part of the interpreter state so should not be freed.
-    if (tstate == &tstate->base.interp->_initial_thread) {
-        // Restore to _PyThreadState_INIT.
-        memcpy(tstate,
-               &initial._main_interpreter._initial_thread,
-               sizeof(*tstate));
+    if (tstate == &interp->_initial_thread) {
+        // Make it available again.
+        reset_threadstate(tstate);
+        assert(interp->threads_preallocated == NULL);
+        _Py_atomic_store_ptr(&interp->threads_preallocated, tstate);
     }
     else {
         PyMem_RawFree(tstate);
@@ -1490,6 +1528,8 @@ init_threadstate(_PyThreadStateImpl *_tstate,
     tstate->previous_executor = NULL;
     tstate->dict_global_version = 0;
 
+    _tstate->asyncio_running_loop = NULL;
+
     tstate->delete_later = NULL;
 
     llist_init(&_tstate->mem_free_queue);
@@ -1519,70 +1559,42 @@ add_threadstate(PyInterpreterState *interp, PyThreadState *tstate,
 static PyThreadState *
 new_threadstate(PyInterpreterState *interp, int whence)
 {
-    _PyThreadStateImpl *tstate;
-    _PyRuntimeState *runtime = interp->runtime;
-    // We don't need to allocate a thread state for the main interpreter
-    // (the common case), but doing it later for the other case revealed a
-    // reentrancy problem (deadlock).  So for now we always allocate before
-    // taking the interpreters lock.  See GH-96071.
-    _PyThreadStateImpl *new_tstate = alloc_threadstate();
-    int used_newtstate;
-    if (new_tstate == NULL) {
+    // Allocate the thread state.
+    _PyThreadStateImpl *tstate = alloc_threadstate(interp);
+    if (tstate == NULL) {
         return NULL;
     }
+
 #ifdef Py_GIL_DISABLED
     Py_ssize_t qsbr_idx = _Py_qsbr_reserve(interp);
     if (qsbr_idx < 0) {
-        PyMem_RawFree(new_tstate);
+        free_threadstate(tstate);
         return NULL;
     }
 #endif
 
     /* We serialize concurrent creation to protect global state. */
-    HEAD_LOCK(runtime);
+    HEAD_LOCK(interp->runtime);
 
+    // Initialize the new thread state.
     interp->threads.next_unique_id += 1;
     uint64_t id = interp->threads.next_unique_id;
+    init_threadstate(tstate, interp, id, whence);
 
-    // Allocate the thread state and add it to the interpreter.
+    // Add the new thread state to the interpreter.
     PyThreadState *old_head = interp->threads.head;
-    if (old_head == NULL) {
-        // It's the interpreter's initial thread state.
-        used_newtstate = 0;
-        tstate = &interp->_initial_thread;
-    }
-    // XXX Re-use interp->_initial_thread if not in use?
-    else {
-        // Every valid interpreter must have at least one thread.
-        assert(id > 1);
-        assert(old_head->prev == NULL);
-        used_newtstate = 1;
-        tstate = new_tstate;
-        // Set to _PyThreadState_INIT.
-        memcpy(tstate,
-               &initial._main_interpreter._initial_thread,
-               sizeof(*tstate));
-    }
-
-    init_threadstate(tstate, interp, id, whence);
     add_threadstate(interp, (PyThreadState *)tstate, old_head);
 
-    HEAD_UNLOCK(runtime);
-    if (!used_newtstate) {
-        // Must be called with lock unlocked to avoid re-entrancy deadlock.
-        PyMem_RawFree(new_tstate);
-    }
-    else {
+    HEAD_UNLOCK(interp->runtime);
 #ifdef Py_GIL_DISABLED
-        if (interp->gc.immortalize.enable_on_thread_created &&
-            !interp->gc.immortalize.enabled)
-        {
+    if (id == 1) {
+        if (_Py_atomic_load_int(&interp->gc.immortalize) == 0) {
             // Immortalize objects marked as using deferred reference counting
             // the first time a non-main thread is created.
             _PyGC_ImmortalizeDeferredObjects(interp);
         }
-#endif
     }
+#endif
 
 #ifdef Py_GIL_DISABLED
     // Must be called with lock unlocked to avoid lock ordering deadlocks.
@@ -1595,8 +1607,13 @@ new_threadstate(PyInterpreterState *interp, int whence)
 PyThreadState *
 PyThreadState_New(PyInterpreterState *interp)
 {
-    PyThreadState *tstate = new_threadstate(interp,
-                                            _PyThreadState_WHENCE_UNKNOWN);
+    return _PyThreadState_NewBound(interp, _PyThreadState_WHENCE_UNKNOWN);
+}
+
+PyThreadState *
+_PyThreadState_NewBound(PyInterpreterState *interp, int whence)
+{
+    PyThreadState *tstate = new_threadstate(interp, whence);
     if (tstate) {
         bind_tstate(tstate);
         // This makes sure there's a gilstate tstate bound
@@ -1688,6 +1705,11 @@ PyThreadState_Clear(PyThreadState *tstate)
 
     /* Don't clear tstate->pyframe: it is a borrowed reference */
 
+    Py_CLEAR(tstate->threading_local_key);
+    Py_CLEAR(tstate->threading_local_sentinel);
+
+    Py_CLEAR(((_PyThreadStateImpl *)tstate)->asyncio_running_loop);
+
     Py_CLEAR(tstate->dict);
     Py_CLEAR(tstate->async_exc);
 
@@ -1742,7 +1764,7 @@ decrement_stoptheworld_countdown(struct _stoptheworld_state *stw);
 
 /* Common code for PyThreadState_Delete() and PyThreadState_DeleteCurrent() */
 static void
-tstate_delete_common(PyThreadState *tstate)
+tstate_delete_common(PyThreadState *tstate, int release_gil)
 {
     assert(tstate->_status.cleared && !tstate->_status.finalized);
     tstate_verify_not_active(tstate);
@@ -1784,20 +1806,26 @@ tstate_delete_common(PyThreadState *tstate)
 
     HEAD_UNLOCK(runtime);
 
-#ifdef Py_GIL_DISABLED
-    _Py_qsbr_unregister((_PyThreadStateImpl *)tstate);
-#endif
-
     // XXX Unbind in PyThreadState_Clear(), or earlier
     // (and assert not-equal here)?
     if (tstate->_status.bound_gilstate) {
         unbind_gilstate_tstate(tstate);
     }
-    unbind_tstate(tstate);
+    if (tstate->_status.bound) {
+        unbind_tstate(tstate);
+    }
 
     // XXX Move to PyThreadState_Clear()?
     clear_datastack(tstate);
 
+    if (release_gil) {
+        _PyEval_ReleaseLock(tstate->interp, tstate, 1);
+    }
+
+#ifdef Py_GIL_DISABLED
+    _Py_qsbr_unregister(tstate);
+#endif
+
     tstate->_status.finalized = 1;
 }
 
@@ -1809,7 +1837,7 @@ zapthreads(PyInterpreterState *interp)
        when the threads are all really dead (XXX famous last words). */
     while ((tstate = interp->threads.head) != NULL) {
         tstate_verify_not_active(tstate);
-        tstate_delete_common(tstate);
+        tstate_delete_common(tstate, 0);
         free_threadstate((_PyThreadStateImpl *)tstate);
     }
 }
@@ -1820,7 +1848,7 @@ PyThreadState_Delete(PyThreadState *tstate)
 {
     _Py_EnsureTstateNotNULL(tstate);
     tstate_verify_not_active(tstate);
-    tstate_delete_common(tstate);
+    tstate_delete_common(tstate, 0);
     free_threadstate((_PyThreadStateImpl *)tstate);
 }
 
@@ -1833,8 +1861,7 @@ _PyThreadState_DeleteCurrent(PyThreadState *tstate)
     _Py_qsbr_detach(((_PyThreadStateImpl *)tstate)->qsbr);
 #endif
     current_fast_clear(tstate->interp->runtime);
-    tstate_delete_common(tstate);
-    _PyEval_ReleaseLock(tstate->interp, NULL);
+    tstate_delete_common(tstate, 1);  // release GIL as part of call
     free_threadstate((_PyThreadStateImpl *)tstate);
 }
 
@@ -2059,7 +2086,7 @@ _PyThreadState_Attach(PyThreadState *tstate)
 
 
     while (1) {
-        int acquired_gil = _PyEval_AcquireLock(tstate);
+        _PyEval_AcquireLock(tstate);
 
         // XXX assert(tstate_is_alive(tstate));
         current_fast_set(&_PyRuntime, tstate);
@@ -2070,20 +2097,17 @@ _PyThreadState_Attach(PyThreadState *tstate)
         }
 
 #ifdef Py_GIL_DISABLED
-        if (_PyEval_IsGILEnabled(tstate) != acquired_gil) {
+        if (_PyEval_IsGILEnabled(tstate) && !tstate->_status.holds_gil) {
             // The GIL was enabled between our call to _PyEval_AcquireLock()
             // and when we attached (the GIL can't go from enabled to disabled
             // here because only a thread holding the GIL can disable
             // it). Detach and try again.
-            assert(!acquired_gil);
             tstate_set_detached(tstate, _Py_THREAD_DETACHED);
             tstate_deactivate(tstate);
             current_fast_clear(&_PyRuntime);
             continue;
         }
         _Py_qsbr_attach(((_PyThreadStateImpl *)tstate)->qsbr);
-#else
-        (void)acquired_gil;
 #endif
         break;
     }
@@ -2114,7 +2138,7 @@ detach_thread(PyThreadState *tstate, int detached_state)
     tstate_deactivate(tstate);
     tstate_set_detached(tstate, detached_state);
     current_fast_clear(&_PyRuntime);
-    _PyEval_ReleaseLock(tstate->interp, tstate);
+    _PyEval_ReleaseLock(tstate->interp, tstate, 0);
 }
 
 void
@@ -2802,12 +2826,18 @@ PyGILState_Release(PyGILState_STATE oldstate)
         /* can't have been locked when we created it */
         assert(oldstate == PyGILState_UNLOCKED);
         // XXX Unbind tstate here.
+        // gh-119585: `PyThreadState_Clear()` may call destructors that
+        // themselves use PyGILState_Ensure and PyGILState_Release, so make
+        // sure that gilstate_counter is not zero when calling it.
+        ++tstate->gilstate_counter;
         PyThreadState_Clear(tstate);
+        --tstate->gilstate_counter;
         /* Delete the thread-state.  Note this releases the GIL too!
          * It's vital that the GIL be held here, to avoid shutdown
          * races; see bugs 225673 and 1061968 (that nasty bug has a
          * habit of coming back).
          */
+        assert(tstate->gilstate_counter == 0);
         assert(current_fast_get() == tstate);
         _PyThreadState_DeleteCurrent(tstate);
     }
@@ -3061,6 +3091,8 @@ tstate_mimalloc_bind(PyThreadState *tstate)
     // _PyObject_GC_New() and similar functions temporarily override this to
     // use one of the GC heaps.
     mts->current_object_heap = &mts->heaps[_Py_MIMALLOC_HEAP_OBJECT];
+
+    _Py_atomic_store_int(&mts->initialized, 1);
 #endif
 }
 
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index ce7f194e929c9c..f9daf8168f1c52 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -280,11 +280,42 @@ PyRun_InteractiveOneObjectEx(FILE *fp, PyObject *filename,
     PyObject *main_dict = PyModule_GetDict(main_module);  // borrowed ref
 
     PyObject *res = run_mod(mod, filename, main_dict, main_dict, flags, arena, interactive_src, 1);
+    Py_INCREF(interactive_src);
     _PyArena_Free(arena);
     Py_DECREF(main_module);
     if (res == NULL) {
+        PyThreadState *tstate = _PyThreadState_GET();
+        PyObject *exc = _PyErr_GetRaisedException(tstate);
+        if (PyType_IsSubtype(Py_TYPE(exc),
+                             (PyTypeObject *) PyExc_SyntaxError))
+        {
+            /* fix "text" attribute */
+            assert(interactive_src != NULL);
+            PyObject *xs = PyUnicode_Splitlines(interactive_src, 1);
+            if (xs == NULL) {
+                goto error;
+            }
+            PyObject *exc_lineno = PyObject_GetAttr(exc, &_Py_ID(lineno));
+            if (exc_lineno == NULL) {
+                Py_DECREF(xs);
+                goto error;
+            }
+            int n = PyLong_AsInt(exc_lineno);
+            Py_DECREF(exc_lineno);
+            if (n <= 0 || n > PyList_GET_SIZE(xs)) {
+                Py_DECREF(xs);
+                goto error;
+            }
+            PyObject *line = PyList_GET_ITEM(xs, n - 1);
+            PyObject_SetAttr(exc, &_Py_ID(text), line);
+            Py_DECREF(xs);
+        }
+error:
+        Py_DECREF(interactive_src);
+        _PyErr_SetRaisedException(tstate, exc);
         return -1;
     }
+    Py_DECREF(interactive_src);
     Py_DECREF(res);
 
     flush_io();
@@ -532,6 +563,30 @@ PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
     return _PyRun_SimpleStringFlagsWithName(command, NULL, flags);
 }
 
+static int
+parse_exit_code(PyObject *code, int *exitcode_p)
+{
+    if (PyLong_Check(code)) {
+        // gh-125842: Use a long long to avoid an overflow error when `long`
+        // is 32-bit. We still truncate the result to an int.
+        int exitcode = (int)PyLong_AsLongLong(code);
+        if (exitcode == -1 && PyErr_Occurred()) {
+            // On overflow or other error, clear the exception and use -1
+            // as the exit code to match historical Python behavior.
+            PyErr_Clear();
+            *exitcode_p = -1;
+            return 1;
+        }
+        *exitcode_p = exitcode;
+        return 1;
+    }
+    else if (code == Py_None) {
+        *exitcode_p = 0;
+        return 1;
+    }
+    return 0;
+}
+
 int
 _Py_HandleSystemExit(int *exitcode_p)
 {
@@ -548,50 +603,40 @@ _Py_HandleSystemExit(int *exitcode_p)
 
     fflush(stdout);
 
-    int exitcode = 0;
-
     PyObject *exc = PyErr_GetRaisedException();
-    if (exc == NULL) {
-        goto done;
-    }
-    assert(PyExceptionInstance_Check(exc));
+    assert(exc != NULL && PyExceptionInstance_Check(exc));
 
-    /* The error code should be in the `code' attribute. */
     PyObject *code = PyObject_GetAttr(exc, &_Py_ID(code));
-    if (code) {
+    if (code == NULL) {
+        // If the exception has no 'code' attribute, print the exception below
+        PyErr_Clear();
+    }
+    else if (parse_exit_code(code, exitcode_p)) {
+        Py_DECREF(code);
+        Py_CLEAR(exc);
+        return 1;
+    }
+    else {
+        // If code is not an int or None, print it below
         Py_SETREF(exc, code);
-        if (exc == Py_None) {
-            goto done;
-        }
     }
-    /* If we failed to dig out the 'code' attribute,
-     * just let the else clause below print the error.
-     */
 
-    if (PyLong_Check(exc)) {
-        exitcode = (int)PyLong_AsLong(exc);
+    PyThreadState *tstate = _PyThreadState_GET();
+    PyObject *sys_stderr = _PySys_GetAttr(tstate, &_Py_ID(stderr));
+    if (sys_stderr != NULL && sys_stderr != Py_None) {
+        if (PyFile_WriteObject(exc, sys_stderr, Py_PRINT_RAW) < 0) {
+            PyErr_Clear();
+        }
     }
     else {
-        PyThreadState *tstate = _PyThreadState_GET();
-        PyObject *sys_stderr = _PySys_GetAttr(tstate, &_Py_ID(stderr));
-        /* We clear the exception here to avoid triggering the assertion
-         * in PyObject_Str that ensures it won't silently lose exception
-         * details.
-         */
-        PyErr_Clear();
-        if (sys_stderr != NULL && sys_stderr != Py_None) {
-            PyFile_WriteObject(exc, sys_stderr, Py_PRINT_RAW);
-        } else {
-            PyObject_Print(exc, stderr, Py_PRINT_RAW);
-            fflush(stderr);
+        if (PyObject_Print(exc, stderr, Py_PRINT_RAW) < 0) {
+            PyErr_Clear();
         }
-        PySys_WriteStderr("\n");
-        exitcode = 1;
+        fflush(stderr);
     }
-
-done:
+    PySys_WriteStderr("\n");
     Py_CLEAR(exc);
-    *exitcode_p = exitcode;
+    *exitcode_p = 1;
     return 1;
 }
 
@@ -1440,6 +1485,7 @@ Py_CompileStringObject(const char *str, PyObject *filename, int start,
     if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
         if ((flags->cf_flags & PyCF_OPTIMIZED_AST) == PyCF_OPTIMIZED_AST) {
             if (_PyCompile_AstOptimize(mod, filename, flags, optimize, arena) < 0) {
+                _PyArena_Free(arena);
                 return NULL;
             }
         }
diff --git a/Python/qsbr.c b/Python/qsbr.c
index d7ac8f479cda1b..a40219acfe2c29 100644
--- a/Python/qsbr.c
+++ b/Python/qsbr.c
@@ -2,7 +2,7 @@
  * Implementation of safe memory reclamation scheme using
  * quiescent states.
  *
- * This is dervied from the "GUS" safe memory reclamation technique
+ * This is derived from the "GUS" safe memory reclamation technique
  * in FreeBSD written by Jeffrey Roberson. It is heavily modified. Any bugs
  * in this code are likely due to the modifications.
  *
@@ -160,7 +160,8 @@ qsbr_poll_scan(struct _qsbr_shared *shared)
 bool
 _Py_qsbr_poll(struct _qsbr_thread_state *qsbr, uint64_t goal)
 {
-    assert(_PyThreadState_GET()->state == _Py_THREAD_ATTACHED);
+    assert(_Py_atomic_load_int_relaxed(&_PyThreadState_GET()->state) == _Py_THREAD_ATTACHED);
+
     if (_Py_qbsr_goal_reached(qsbr, goal)) {
         return true;
     }
@@ -231,20 +232,26 @@ _Py_qsbr_register(_PyThreadStateImpl *tstate, PyInterpreterState *interp,
 }
 
 void
-_Py_qsbr_unregister(_PyThreadStateImpl *tstate)
+_Py_qsbr_unregister(PyThreadState *tstate)
 {
-    struct _qsbr_shared *shared = tstate->qsbr->shared;
+    struct _qsbr_shared *shared = &tstate->interp->qsbr;
+    struct _PyThreadStateImpl *tstate_imp = (_PyThreadStateImpl*) tstate;
+
+    // gh-119369: GIL must be released (if held) to prevent deadlocks, because
+    // we might not have an active tstate, which means that blocking on PyMutex
+    // locks will not implicitly release the GIL.
+    assert(!tstate->_status.holds_gil);
 
     PyMutex_Lock(&shared->mutex);
     // NOTE: we must load (or reload) the thread state's qbsr inside the mutex
     // because the array may have been resized (changing tstate->qsbr) while
     // we waited to acquire the mutex.
-    struct _qsbr_thread_state *qsbr = tstate->qsbr;
+    struct _qsbr_thread_state *qsbr = tstate_imp->qsbr;
 
     assert(qsbr->seq == 0 && "thread state must be detached");
-    assert(qsbr->allocated && qsbr->tstate == (PyThreadState *)tstate);
+    assert(qsbr->allocated && qsbr->tstate == tstate);
 
-    tstate->qsbr = NULL;
+    tstate_imp->qsbr = NULL;
     qsbr->tstate = NULL;
     qsbr->allocated = false;
     qsbr->freelist_next = shared->freelist;
diff --git a/Python/specialize.c b/Python/specialize.c
index 9ac428c3593f56..ad166ea091be9d 100644
--- a/Python/specialize.c
+++ b/Python/specialize.c
@@ -29,6 +29,10 @@ GCStats _py_gc_stats[NUM_GENERATIONS] = { 0 };
 static PyStats _Py_stats_struct = { .gc_stats = _py_gc_stats };
 PyStats *_Py_stats = NULL;
 
+#if PYSTATS_MAX_UOP_ID < MAX_UOP_ID
+#error "Not enough space allocated for pystats. Increase PYSTATS_MAX_UOP_ID to at least MAX_UOP_ID"
+#endif
+
 #define ADD_STAT_TO_DICT(res, field) \
     do { \
         PyObject *val = PyLong_FromUnsignedLongLong(stats->field); \
@@ -837,7 +841,10 @@ specialize_dict_access(
         return 0;
     }
     _PyAttrCache *cache = (_PyAttrCache *)(instr + 1);
-    if (type->tp_flags & Py_TPFLAGS_INLINE_VALUES && _PyObject_InlineValues(owner)->valid) {
+    if (type->tp_flags & Py_TPFLAGS_INLINE_VALUES &&
+        _PyObject_InlineValues(owner)->valid &&
+        !(base_op == STORE_ATTR && _PyObject_GetManagedDict(owner) != NULL))
+    {
         PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
         assert(PyUnicode_CheckExact(name));
         Py_ssize_t index = _PyDictKeys_StringLookup(keys, name);
@@ -1301,7 +1308,7 @@ PyObject *descr, DescriptorClassification kind, bool is_method)
             }
             /* Cache entries must be unsigned values, so we offset the
              * dictoffset by MANAGED_DICT_OFFSET.
-             * We do the reverese offset in LOAD_ATTR_METHOD_LAZY_DICT */
+             * We do the reverse offset in LOAD_ATTR_METHOD_LAZY_DICT */
             dictoffset -= MANAGED_DICT_OFFSET;
             assert(((uint16_t)dictoffset) == dictoffset);
             cache->dict_offset = (uint16_t)dictoffset;
diff --git a/Python/stdlib_module_names.h b/Python/stdlib_module_names.h
index 9686d10563aa4d..dfe0fa2acd8d6c 100644
--- a/Python/stdlib_module_names.h
+++ b/Python/stdlib_module_names.h
@@ -6,6 +6,7 @@ static const char* _Py_stdlib_module_names[] = {
 "_abc",
 "_aix_support",
 "_android_support",
+"_apple_support",
 "_ast",
 "_asyncio",
 "_bisect",
@@ -97,6 +98,7 @@ static const char* _Py_stdlib_module_names[] = {
 "_weakref",
 "_weakrefset",
 "_winapi",
+"_wmi",
 "_zoneinfo",
 "abc",
 "antigravity",
diff --git a/Python/structmember.c b/Python/structmember.c
index ba881d18a0973d..d5e7ab83093dc8 100644
--- a/Python/structmember.c
+++ b/Python/structmember.c
@@ -4,8 +4,22 @@
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_long.h"          // _PyLong_IsNegative()
+#include "pycore_object.h"        // _Py_TryIncrefCompare(), FT_ATOMIC_*()
+#include "pycore_critical_section.h"
 
 
+static inline PyObject *
+member_get_object(const char *addr, const char *obj_addr, PyMemberDef *l)
+{
+    PyObject *v = FT_ATOMIC_LOAD_PTR(*(PyObject **) addr);
+    if (v == NULL) {
+        PyErr_Format(PyExc_AttributeError,
+                     "'%T' object has no attribute '%s'",
+                     (PyObject *)obj_addr, l->name);
+    }
+    return v;
+}
+
 PyObject *
 PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
 {
@@ -75,15 +89,19 @@ PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
         Py_INCREF(v);
         break;
     case Py_T_OBJECT_EX:
-        v = *(PyObject **)addr;
-        if (v == NULL) {
-            PyObject *obj = (PyObject *)obj_addr;
-            PyTypeObject *tp = Py_TYPE(obj);
-            PyErr_Format(PyExc_AttributeError,
-                         "'%.200s' object has no attribute '%s'",
-                         tp->tp_name, l->name);
-        }
+        v = member_get_object(addr, obj_addr, l);
+#ifndef Py_GIL_DISABLED
         Py_XINCREF(v);
+#else
+        if (v != NULL) {
+            if (!_Py_TryIncrefCompare((PyObject **) addr, v)) {
+                Py_BEGIN_CRITICAL_SECTION((PyObject *) obj_addr);
+                v = member_get_object(addr, obj_addr, l);
+                Py_XINCREF(v);
+                Py_END_CRITICAL_SECTION();
+            }
+        }
+#endif
         break;
     case Py_T_LONGLONG:
         v = PyLong_FromLongLong(*(long long *)addr);
@@ -92,6 +110,7 @@ PyMember_GetOne(const char *obj_addr, PyMemberDef *l)
         v = PyLong_FromUnsignedLongLong(*(unsigned long long *)addr);
         break;
     case _Py_T_NONE:
+        // doesn't require free-threading code path
         v = Py_NewRef(Py_None);
         break;
     default:
@@ -118,6 +137,9 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
         return -1;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyObject *obj = (PyObject *) addr;
+#endif
     addr += l->offset;
 
     if ((l->flags & Py_READONLY))
@@ -281,8 +303,10 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
         break;
     case _Py_T_OBJECT:
     case Py_T_OBJECT_EX:
+        Py_BEGIN_CRITICAL_SECTION(obj);
         oldv = *(PyObject **)addr;
-        *(PyObject **)addr = Py_XNewRef(v);
+        FT_ATOMIC_STORE_PTR_RELEASE(*(PyObject **)addr, Py_XNewRef(v));
+        Py_END_CRITICAL_SECTION();
         Py_XDECREF(oldv);
         break;
     case Py_T_CHAR: {
diff --git a/Python/symtable.c b/Python/symtable.c
index 2ec21a2d376da2..65dcf6746d8f69 100644
--- a/Python/symtable.c
+++ b/Python/symtable.c
@@ -58,13 +58,13 @@
 #define ANNOTATION_NOT_ALLOWED \
 "%s cannot be used within an annotation"
 
-#define TYPEVAR_BOUND_NOT_ALLOWED \
-"%s cannot be used within a TypeVar bound"
+#define EXPR_NOT_ALLOWED_IN_TYPE_VARIABLE \
+"%s cannot be used within %s"
 
-#define TYPEALIAS_NOT_ALLOWED \
+#define EXPR_NOT_ALLOWED_IN_TYPE_ALIAS \
 "%s cannot be used within a type alias"
 
-#define TYPEPARAM_NOT_ALLOWED \
+#define EXPR_NOT_ALLOWED_IN_TYPE_PARAMETERS \
 "%s cannot be used within the definition of a generic"
 
 #define DUPLICATE_TYPE_PARAM \
@@ -103,8 +103,11 @@ ste_new(struct symtable *st, identifier name, _Py_block_ty block,
     ste->ste_children = NULL;
 
     ste->ste_directives = NULL;
+    ste->ste_mangled_names = NULL;
 
     ste->ste_type = block;
+    ste->ste_scope_info = NULL;
+
     ste->ste_nested = 0;
     ste->ste_free = 0;
     ste->ste_varargs = 0;
@@ -166,6 +169,7 @@ ste_dealloc(PySTEntryObject *ste)
     Py_XDECREF(ste->ste_varnames);
     Py_XDECREF(ste->ste_children);
     Py_XDECREF(ste->ste_directives);
+    Py_XDECREF(ste->ste_mangled_names);
     PyObject_Free(ste);
 }
 
@@ -263,9 +267,9 @@ static void _dump_symtable(PySTEntryObject* ste, PyObject* prefix)
         case ClassBlock: blocktype = "ClassBlock"; break;
         case ModuleBlock: blocktype = "ModuleBlock"; break;
         case AnnotationBlock: blocktype = "AnnotationBlock"; break;
-        case TypeVarBoundBlock: blocktype = "TypeVarBoundBlock"; break;
+        case TypeVariableBlock: blocktype = "TypeVariableBlock"; break;
         case TypeAliasBlock: blocktype = "TypeAliasBlock"; break;
-        case TypeParamBlock: blocktype = "TypeParamBlock"; break;
+        case TypeParametersBlock: blocktype = "TypeParametersBlock"; break;
     }
     const char *comptype = "";
     switch (ste->ste_comprehension) {
@@ -523,9 +527,9 @@ int
 _PyST_IsFunctionLike(PySTEntryObject *ste)
 {
     return ste->ste_type == FunctionBlock
-        || ste->ste_type == TypeVarBoundBlock
+        || ste->ste_type == TypeVariableBlock
         || ste->ste_type == TypeAliasBlock
-        || ste->ste_type == TypeParamBlock;
+        || ste->ste_type == TypeParametersBlock;
 }
 
 static int
@@ -778,22 +782,19 @@ inline_comprehension(PySTEntryObject *ste, PySTEntryObject *comp,
         if (existing == NULL && PyErr_Occurred()) {
             return 0;
         }
+        // __class__ is never allowed to be free through a class scope (see
+        // drop_class_free)
+        if (scope == FREE && ste->ste_type == ClassBlock &&
+                _PyUnicode_EqualToASCIIString(k, "__class__")) {
+            scope = GLOBAL_IMPLICIT;
+            if (PySet_Discard(comp_free, k) < 0) {
+                return 0;
+            }
+            remove_dunder_class = 1;
+        }
         if (!existing) {
             // name does not exist in scope, copy from comprehension
             assert(scope != FREE || PySet_Contains(comp_free, k) == 1);
-            if (scope == FREE && ste->ste_type == ClassBlock &&
-                _PyUnicode_EqualToASCIIString(k, "__class__")) {
-                // if __class__ is unbound in the enclosing class scope and free
-                // in the comprehension scope, it needs special handling; just
-                // letting it be marked as free in class scope will break due to
-                // drop_class_free
-                scope = GLOBAL_IMPLICIT;
-                only_flags &= ~DEF_FREE;
-                if (PySet_Discard(comp_free, k) < 0) {
-                    return 0;
-                }
-                remove_dunder_class = 1;
-            }
             PyObject *v_flags = PyLong_FromLong(only_flags);
             if (v_flags == NULL) {
                 return 0;
@@ -1338,6 +1339,11 @@ symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
     if (prev) {
         ste->ste_comp_iter_expr = prev->ste_comp_iter_expr;
     }
+    /* No need to inherit ste_mangled_names in classes, where all names
+     * are mangled. */
+    if (prev && prev->ste_mangled_names != NULL && block != ClassBlock) {
+        ste->ste_mangled_names = Py_NewRef(prev->ste_mangled_names);
+    }
     /* The entry is owned by the stack. Borrow it for st_cur. */
     Py_DECREF(ste);
     st->st_cur = ste;
@@ -1363,7 +1369,7 @@ symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
 static long
 symtable_lookup_entry(struct symtable *st, PySTEntryObject *ste, PyObject *name)
 {
-    PyObject *mangled = _Py_Mangle(st->st_private, name);
+    PyObject *mangled = _Py_MaybeMangle(st->st_private, ste, name);
     if (!mangled)
         return 0;
     long ret = _PyST_GetSymbol(ste, mangled);
@@ -1384,8 +1390,7 @@ symtable_add_def_helper(struct symtable *st, PyObject *name, int flag, struct _s
     PyObject *o;
     PyObject *dict;
     long val;
-    PyObject *mangled = _Py_Mangle(st->st_private, name);
-
+    PyObject *mangled = _Py_MaybeMangle(st->st_private, st->st_cur, name);
 
     if (!mangled)
         return 0;
@@ -1474,6 +1479,11 @@ static int
 symtable_add_def(struct symtable *st, PyObject *name, int flag,
                  int lineno, int col_offset, int end_lineno, int end_col_offset)
 {
+    if ((flag & DEF_TYPE_PARAM) && st->st_cur->ste_mangled_names != NULL) {
+        if(PySet_Add(st->st_cur->ste_mangled_names, name) < 0) {
+            return 0;
+        }
+    }
     return symtable_add_def_helper(st, name, flag, st->st_cur,
                         lineno, col_offset, end_lineno, end_col_offset);
 }
@@ -1486,7 +1496,7 @@ symtable_enter_type_param_block(struct symtable *st, identifier name,
                                int end_lineno, int end_col_offset)
 {
     _Py_block_ty current_type = st->st_cur->ste_type;
-    if(!symtable_enter_block(st, name, TypeParamBlock, ast, lineno,
+    if(!symtable_enter_block(st, name, TypeParametersBlock, ast, lineno,
                              col_offset, end_lineno, end_col_offset)) {
         return 0;
     }
@@ -1508,7 +1518,6 @@ symtable_enter_type_param_block(struct symtable *st, identifier name,
                               lineno, col_offset, end_lineno, end_col_offset)) {
             return 0;
         }
-        st->st_private = name;
         // This is used for setting the generic base
         _Py_DECLARE_STR(generic_base, ".generic_base");
         if (!symtable_add_def(st, &_Py_STR(generic_base), DEF_LOCAL,
@@ -1597,7 +1606,7 @@ symtable_record_directive(struct symtable *st, identifier name, int lineno,
         if (!st->st_cur->ste_directives)
             return 0;
     }
-    mangled = _Py_Mangle(st->st_private, name);
+    mangled = _Py_MaybeMangle(st->st_private, st->st_cur, name);
     if (!mangled)
         return 0;
     data = Py_BuildValue("(Niiii)", mangled, lineno, col_offset, end_lineno, end_col_offset);
@@ -1673,6 +1682,7 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
             VISIT_QUIT(st, 0);
         if (s->v.ClassDef.decorator_list)
             VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
+        tmp = st->st_private;
         if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
             if (!symtable_enter_type_param_block(st, s->v.ClassDef.name,
                                                 (void *)s->v.ClassDef.type_params,
@@ -1680,6 +1690,11 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
                                                 LOCATION(s))) {
                 VISIT_QUIT(st, 0);
             }
+            st->st_private = s->v.ClassDef.name;
+            st->st_cur->ste_mangled_names = PySet_New(NULL);
+            if (!st->st_cur->ste_mangled_names) {
+                VISIT_QUIT(st, 0);
+            }
             VISIT_SEQ(st, type_param, s->v.ClassDef.type_params);
         }
         VISIT_SEQ(st, expr, s->v.ClassDef.bases);
@@ -1688,7 +1703,6 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
                                   (void *)s, s->lineno, s->col_offset,
                                   s->end_lineno, s->end_col_offset))
             VISIT_QUIT(st, 0);
-        tmp = st->st_private;
         st->st_private = s->v.ClassDef.name;
         if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
             if (!symtable_add_def(st, &_Py_ID(__type_params__),
@@ -1702,13 +1716,13 @@ symtable_visit_stmt(struct symtable *st, stmt_ty s)
             }
         }
         VISIT_SEQ(st, stmt, s->v.ClassDef.body);
-        st->st_private = tmp;
         if (!symtable_exit_block(st))
             VISIT_QUIT(st, 0);
         if (asdl_seq_LEN(s->v.ClassDef.type_params) > 0) {
             if (!symtable_exit_block(st))
                 VISIT_QUIT(st, 0);
         }
+        st->st_private = tmp;
         break;
     }
     case TypeAlias_kind: {
@@ -2057,20 +2071,20 @@ symtable_extend_namedexpr_scope(struct symtable *st, expr_ty e)
         }
         /* Disallow usage in ClassBlock and type scopes */
         if (ste->ste_type == ClassBlock ||
-            ste->ste_type == TypeParamBlock ||
+            ste->ste_type == TypeParametersBlock ||
             ste->ste_type == TypeAliasBlock ||
-            ste->ste_type == TypeVarBoundBlock) {
+            ste->ste_type == TypeVariableBlock) {
             switch (ste->ste_type) {
                 case ClassBlock:
                     PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_CLASS);
                     break;
-                case TypeParamBlock:
+                case TypeParametersBlock:
                     PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEPARAM);
                     break;
                 case TypeAliasBlock:
                     PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEALIAS);
                     break;
-                case TypeVarBoundBlock:
+                case TypeVariableBlock:
                     PyErr_Format(PyExc_SyntaxError, NAMED_EXPR_COMP_IN_TYPEVAR_BOUND);
                     break;
                 default:
@@ -2276,19 +2290,27 @@ symtable_visit_expr(struct symtable *st, expr_ty e)
 }
 
 static int
-symtable_visit_type_param_bound_or_default(struct symtable *st, expr_ty e, identifier name, void *key)
+symtable_visit_type_param_bound_or_default(
+    struct symtable *st, expr_ty e, identifier name,
+    void *key, const char *ste_scope_info)
 {
     if (e) {
         int is_in_class = st->st_cur->ste_can_see_class_scope;
-        if (!symtable_enter_block(st, name, TypeVarBoundBlock, key, LOCATION(e)))
+        if (!symtable_enter_block(st, name, TypeVariableBlock, key, LOCATION(e)))
             return 0;
+
         st->st_cur->ste_can_see_class_scope = is_in_class;
         if (is_in_class && !symtable_add_def(st, &_Py_ID(__classdict__), USE, LOCATION(e))) {
             VISIT_QUIT(st, 0);
         }
+
+        assert(ste_scope_info != NULL);
+        st->st_cur->ste_scope_info = ste_scope_info;
         VISIT(st, expr, e);
-        if (!symtable_exit_block(st))
+
+        if (!symtable_exit_block(st)) {
             return 0;
+        }
     }
     return 1;
 }
@@ -2306,6 +2328,12 @@ symtable_visit_type_param(struct symtable *st, type_param_ty tp)
         if (!symtable_add_def(st, tp->v.TypeVar.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp)))
             VISIT_QUIT(st, 0);
 
+        const char *ste_scope_info = NULL;
+        const expr_ty bound = tp->v.TypeVar.bound;
+        if (bound != NULL) {
+            ste_scope_info = bound->kind == Tuple_kind ? "a TypeVar constraint" : "a TypeVar bound";
+        }
+
         // We must use a different key for the bound and default. The obvious choice would be to
         // use the .bound and .default_value pointers, but that fails when the expression immediately
         // inside the bound or default is a comprehension: we would reuse the same key for
@@ -2313,11 +2341,12 @@ symtable_visit_type_param(struct symtable *st, type_param_ty tp)
         // The only requirement for the key is that it is unique and it matches the logic in
         // compile.c where the scope is retrieved.
         if (!symtable_visit_type_param_bound_or_default(st, tp->v.TypeVar.bound, tp->v.TypeVar.name,
-                                                        (void *)tp)) {
+                                                        (void *)tp, ste_scope_info)) {
             VISIT_QUIT(st, 0);
         }
+
         if (!symtable_visit_type_param_bound_or_default(st, tp->v.TypeVar.default_value, tp->v.TypeVar.name,
-                                                        (void *)((uintptr_t)tp + 1))) {
+                                                        (void *)((uintptr_t)tp + 1), "a TypeVar default")) {
             VISIT_QUIT(st, 0);
         }
         break;
@@ -2325,8 +2354,9 @@ symtable_visit_type_param(struct symtable *st, type_param_ty tp)
         if (!symtable_add_def(st, tp->v.TypeVarTuple.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp))) {
             VISIT_QUIT(st, 0);
         }
+
         if (!symtable_visit_type_param_bound_or_default(st, tp->v.TypeVarTuple.default_value, tp->v.TypeVarTuple.name,
-                                                        (void *)tp)) {
+                                                        (void *)tp, "a TypeVarTuple default")) {
             VISIT_QUIT(st, 0);
         }
         break;
@@ -2334,8 +2364,9 @@ symtable_visit_type_param(struct symtable *st, type_param_ty tp)
         if (!symtable_add_def(st, tp->v.ParamSpec.name, DEF_TYPE_PARAM | DEF_LOCAL, LOCATION(tp))) {
             VISIT_QUIT(st, 0);
         }
+
         if (!symtable_visit_type_param_bound_or_default(st, tp->v.ParamSpec.default_value, tp->v.ParamSpec.name,
-                                                        (void *)tp)) {
+                                                        (void *)tp, "a ParamSpec default")) {
             VISIT_QUIT(st, 0);
         }
         break;
@@ -2717,12 +2748,21 @@ symtable_raise_if_annotation_block(struct symtable *st, const char *name, expr_t
     enum _block_type type = st->st_cur->ste_type;
     if (type == AnnotationBlock)
         PyErr_Format(PyExc_SyntaxError, ANNOTATION_NOT_ALLOWED, name);
-    else if (type == TypeVarBoundBlock)
-        PyErr_Format(PyExc_SyntaxError, TYPEVAR_BOUND_NOT_ALLOWED, name);
-    else if (type == TypeAliasBlock)
-        PyErr_Format(PyExc_SyntaxError, TYPEALIAS_NOT_ALLOWED, name);
-    else if (type == TypeParamBlock)
-        PyErr_Format(PyExc_SyntaxError, TYPEPARAM_NOT_ALLOWED, name);
+    else if (type == TypeVariableBlock) {
+        const char *info = st->st_cur->ste_scope_info;
+        assert(info != NULL); // e.g., info == "a ParamSpec default"
+        PyErr_Format(PyExc_SyntaxError, EXPR_NOT_ALLOWED_IN_TYPE_VARIABLE, name, info);
+    }
+    else if (type == TypeAliasBlock) {
+        // for now, we do not have any extra information
+        assert(st->st_cur->ste_scope_info == NULL);
+        PyErr_Format(PyExc_SyntaxError, EXPR_NOT_ALLOWED_IN_TYPE_ALIAS, name);
+    }
+    else if (type == TypeParametersBlock) {
+        // for now, we do not have any extra information
+        assert(st->st_cur->ste_scope_info == NULL);
+        PyErr_Format(PyExc_SyntaxError, EXPR_NOT_ALLOWED_IN_TYPE_PARAMETERS, name);
+    }
     else
         return 1;
 
@@ -2776,6 +2816,26 @@ _Py_SymtableStringObjectFlags(const char *str, PyObject *filename,
     return st;
 }
 
+PyObject *
+_Py_MaybeMangle(PyObject *privateobj, PySTEntryObject *ste, PyObject *name)
+{
+    /* Special case for type parameter blocks around generic classes:
+     * we want to mangle type parameter names (so a type param with a private
+     * name can be used inside the class body), but we don't want to mangle
+     * any other names that appear within the type parameter scope.
+     */
+    if (ste->ste_mangled_names != NULL) {
+        int result = PySet_Contains(ste->ste_mangled_names, name);
+        if (result < 0) {
+            return NULL;
+        }
+        if (result == 0) {
+            return Py_NewRef(name);
+        }
+    }
+    return _Py_Mangle(privateobj, name);
+}
+
 PyObject *
 _Py_Mangle(PyObject *privateobj, PyObject *ident)
 {
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 4da13e4552e786..3f170fff156fcd 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -35,7 +35,6 @@ Data members:
 #include "pycore_sysmodule.h"     // export _PySys_GetSizeOf()
 #include "pycore_tuple.h"         // _PyTuple_FromArray()
 
-#include "frameobject.h"          // PyFrame_FastToLocalsWithError()
 #include "pydtrace.h"             // PyDTrace_AUDIT()
 #include "osdefs.h"               // DELIM
 #include "stdlib_module_names.h"  // _Py_stdlib_module_names
@@ -519,7 +518,6 @@ sys_audit(PyObject *self, PyObject *const *args, Py_ssize_t argc)
     }
 
     assert(args[0] != NULL);
-    assert(PyUnicode_Check(args[0]));
 
     if (!should_audit(tstate->interp)) {
         Py_RETURN_NONE;
@@ -748,7 +746,7 @@ sys_displayhook(PyObject *module, PyObject *o)
     if (o == Py_None) {
         Py_RETURN_NONE;
     }
-    if (PyObject_SetAttr(builtins, &_Py_ID(_), Py_None) != 0)
+    if (PyObject_SetAttr(builtins, _Py_LATIN1_CHR('_'), Py_None) != 0)
         return NULL;
     outf = _PySys_GetAttr(tstate, &_Py_ID(stdout));
     if (outf == NULL || outf == Py_None) {
@@ -770,10 +768,9 @@ sys_displayhook(PyObject *module, PyObject *o)
             return NULL;
         }
     }
-    _Py_DECLARE_STR(newline, "\n");
-    if (PyFile_WriteObject(&_Py_STR(newline), outf, Py_PRINT_RAW) != 0)
+    if (PyFile_WriteObject(_Py_LATIN1_CHR('\n'), outf, Py_PRINT_RAW) != 0)
         return NULL;
-    if (PyObject_SetAttr(builtins, &_Py_ID(_), o) != 0)
+    if (PyObject_SetAttr(builtins, _Py_LATIN1_CHR('_'), o) != 0)
         return NULL;
     Py_RETURN_NONE;
 }
@@ -931,7 +928,7 @@ sys_getfilesystemencoding_impl(PyObject *module)
     if (u == NULL) {
         return NULL;
     }
-    _PyUnicode_InternInPlace(interp, &u);
+    _PyUnicode_InternImmortal(interp, &u);
     return u;
 }
 
@@ -951,7 +948,7 @@ sys_getfilesystemencodeerrors_impl(PyObject *module)
     if (u == NULL) {
         return NULL;
     }
-    _PyUnicode_InternInPlace(interp, &u);
+    _PyUnicode_InternImmortal(interp, &u);
     return u;
 }
 
@@ -973,8 +970,9 @@ sys_intern_impl(PyObject *module, PyObject *s)
 /*[clinic end generated code: output=be680c24f5c9e5d6 input=849483c006924e2f]*/
 {
     if (PyUnicode_CheckExact(s)) {
+        PyInterpreterState *interp = _PyInterpreterState_GET();
         Py_INCREF(s);
-        PyUnicode_InternInPlace(&s);
+        _PyUnicode_InternMortal(interp, &s);
         return s;
     }
     else {
@@ -2008,14 +2006,22 @@ sys_getallocatedblocks_impl(PyObject *module)
 /*[clinic input]
 sys.getunicodeinternedsize -> Py_ssize_t
 
+    *
+    _only_immortal: bool = False
+
 Return the number of elements of the unicode interned dictionary
 [clinic start generated code]*/
 
 static Py_ssize_t
-sys_getunicodeinternedsize_impl(PyObject *module)
-/*[clinic end generated code: output=ad0e4c9738ed4129 input=726298eaa063347a]*/
+sys_getunicodeinternedsize_impl(PyObject *module, int _only_immortal)
+/*[clinic end generated code: output=29a6377a94a14f70 input=0330b3408dd5bcc6]*/
 {
-    return _PyUnicode_InternedSize();
+    if (_only_immortal) {
+        return _PyUnicode_InternedSize_Immortal();
+    }
+    else {
+        return _PyUnicode_InternedSize();
+    }
 }
 
 /*[clinic input]
diff --git a/Python/traceback.c b/Python/traceback.c
index 47b77c9108dd9a..e819909b6045c3 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -890,6 +890,8 @@ _Py_DumpASCII(int fd, PyObject *text)
 static void
 dump_frame(int fd, _PyInterpreterFrame *frame)
 {
+    assert(frame->owner != FRAME_OWNED_BY_CSTACK);
+
     PyCodeObject *code =_PyFrame_GetCode(frame);
     PUTS(fd, "  File ");
     if (code->co_filename != NULL
@@ -963,6 +965,17 @@ dump_traceback(int fd, PyThreadState *tstate, int write_header)
 
     unsigned int depth = 0;
     while (1) {
+        if (frame->owner == FRAME_OWNED_BY_CSTACK) {
+            /* Trampoline frame */
+            frame = frame->previous;
+            if (frame == NULL) {
+                break;
+            }
+
+            /* Can't have more than one shim frame in a row */
+            assert(frame->owner != FRAME_OWNED_BY_CSTACK);
+        }
+
         if (MAX_FRAME_DEPTH <= depth) {
             if (MAX_FRAME_DEPTH < depth) {
                 PUTS(fd, "plus ");
@@ -971,20 +984,12 @@ dump_traceback(int fd, PyThreadState *tstate, int write_header)
             }
             break;
         }
+
         dump_frame(fd, frame);
         frame = frame->previous;
         if (frame == NULL) {
             break;
         }
-        if (frame->owner == FRAME_OWNED_BY_CSTACK) {
-            /* Trampoline frame */
-            frame = frame->previous;
-        }
-        if (frame == NULL) {
-            break;
-        }
-        /* Can't have more than one shim frame in a row */
-        assert(frame->owner != FRAME_OWNED_BY_CSTACK);
         depth++;
     }
 }
diff --git a/Python/tracemalloc.c b/Python/tracemalloc.c
index e3ec72062f6931..99ba7876acced7 100644
--- a/Python/tracemalloc.c
+++ b/Python/tracemalloc.c
@@ -2,6 +2,7 @@
 #include "pycore_fileutils.h"     // _Py_write_noraise()
 #include "pycore_gc.h"            // PyGC_Head
 #include "pycore_hashtable.h"     // _Py_hashtable_t
+#include "pycore_initconfig.h"    // _PyStatus_NO_MEMORY()
 #include "pycore_object.h"        // _PyType_PreHeaderSize()
 #include "pycore_pymem.h"         // _Py_tracemalloc_config
 #include "pycore_runtime.h"       // _Py_ID()
@@ -312,7 +313,7 @@ traceback_hash(traceback_t *traceback)
     /* code based on tuplehash() of Objects/tupleobject.c */
     Py_uhash_t x, y;  /* Unsigned for defined overflow behavior. */
     int len = traceback->nframe;
-    Py_uhash_t mult = _PyHASH_MULTIPLIER;
+    Py_uhash_t mult = PyHASH_MULTIPLIER;
     frame_t *frame;
 
     x = 0x345678UL;
@@ -538,12 +539,16 @@ tracemalloc_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize)
         return NULL;
 
     TABLES_LOCK();
-    if (ADD_TRACE(ptr, nelem * elsize) < 0) {
-        /* Failed to allocate a trace for the new memory block */
-        TABLES_UNLOCK();
-        alloc->free(alloc->ctx, ptr);
-        return NULL;
+
+    if (tracemalloc_config.tracing) {
+        if (ADD_TRACE(ptr, nelem * elsize) < 0) {
+            /* Failed to allocate a trace for the new memory block */
+            alloc->free(alloc->ctx, ptr);
+            ptr = NULL;
+        }
     }
+    // else: gh-128679: tracemalloc.stop() was called by another thread
+
     TABLES_UNLOCK();
     return ptr;
 }
@@ -559,11 +564,15 @@ tracemalloc_realloc(void *ctx, void *ptr, size_t new_size)
     if (ptr2 == NULL)
         return NULL;
 
+    TABLES_LOCK();
+    if (!tracemalloc_config.tracing) {
+        // gh-128679: tracemalloc.stop() was called by another thread
+        goto done;
+    }
+
     if (ptr != NULL) {
         /* an existing memory block has been resized */
 
-        TABLES_LOCK();
-
         /* tracemalloc_add_trace() updates the trace if there is already
            a trace at address ptr2 */
         if (ptr2 != ptr) {
@@ -582,20 +591,19 @@ tracemalloc_realloc(void *ctx, void *ptr, size_t new_size)
                allocating memory. */
             Py_FatalError("tracemalloc_realloc() failed to allocate a trace");
         }
-        TABLES_UNLOCK();
     }
     else {
         /* new allocation */
 
-        TABLES_LOCK();
         if (ADD_TRACE(ptr2, new_size) < 0) {
             /* Failed to allocate a trace for the new memory block */
-            TABLES_UNLOCK();
             alloc->free(alloc->ctx, ptr2);
-            return NULL;
+            ptr2 = NULL;
         }
-        TABLES_UNLOCK();
     }
+
+done:
+    TABLES_UNLOCK();
     return ptr2;
 }
 
@@ -614,7 +622,12 @@ tracemalloc_free(void *ctx, void *ptr)
     alloc->free(alloc->ctx, ptr);
 
     TABLES_LOCK();
-    REMOVE_TRACE(ptr);
+
+    if (tracemalloc_config.tracing) {
+        REMOVE_TRACE(ptr);
+    }
+    // else: gh-128679: tracemalloc.stop() was called by another thread
+
     TABLES_UNLOCK();
 }
 
@@ -673,7 +686,9 @@ tracemalloc_realloc_gil(void *ctx, void *ptr, size_t new_size)
         ptr2 = alloc->realloc(alloc->ctx, ptr, new_size);
         if (ptr2 != NULL && ptr != NULL) {
             TABLES_LOCK();
-            REMOVE_TRACE(ptr);
+            if (tracemalloc_config.tracing) {
+                REMOVE_TRACE(ptr);
+            }
             TABLES_UNLOCK();
         }
         return ptr2;
@@ -748,7 +763,9 @@ tracemalloc_raw_realloc(void *ctx, void *ptr, size_t new_size)
 
         if (ptr2 != NULL && ptr != NULL) {
             TABLES_LOCK();
-            REMOVE_TRACE(ptr);
+            if (tracemalloc_config.tracing) {
+                REMOVE_TRACE(ptr);
+            }
             TABLES_UNLOCK();
         }
         return ptr2;
@@ -779,46 +796,36 @@ tracemalloc_clear_filename(void *value)
 
 /* reentrant flag must be set to call this function and GIL must be held */
 static void
-tracemalloc_clear_traces(void)
+tracemalloc_clear_traces_unlocked(void)
 {
+    set_reentrant(1);
+
     /* The GIL protects variables against concurrent access */
     assert(PyGILState_Check());
 
-    TABLES_LOCK();
     _Py_hashtable_clear(tracemalloc_traces);
     _Py_hashtable_clear(tracemalloc_domains);
     tracemalloc_traced_memory = 0;
     tracemalloc_peak_traced_memory = 0;
-    TABLES_UNLOCK();
 
     _Py_hashtable_clear(tracemalloc_tracebacks);
 
     _Py_hashtable_clear(tracemalloc_filenames);
+
+    set_reentrant(0);
 }
 
 
-int
+PyStatus
 _PyTraceMalloc_Init(void)
 {
-    if (tracemalloc_config.initialized == TRACEMALLOC_FINALIZED) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "the tracemalloc module has been unloaded");
-        return -1;
-    }
-
-    if (tracemalloc_config.initialized == TRACEMALLOC_INITIALIZED)
-        return 0;
+    assert(tracemalloc_config.initialized == TRACEMALLOC_NOT_INITIALIZED);
 
     PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw);
 
 #ifdef REENTRANT_THREADLOCAL
     if (PyThread_tss_create(&tracemalloc_reentrant_key) != 0) {
-#ifdef MS_WINDOWS
-        PyErr_SetFromWindowsErr(0);
-#else
-        PyErr_SetFromErrno(PyExc_OSError);
-#endif
-        return -1;
+        return _PyStatus_NO_MEMORY();
     }
 #endif
 
@@ -826,8 +833,7 @@ _PyTraceMalloc_Init(void)
     if (tables_lock == NULL) {
         tables_lock = PyThread_allocate_lock();
         if (tables_lock == NULL) {
-            PyErr_SetString(PyExc_RuntimeError, "cannot allocate lock");
-            return -1;
+            return _PyStatus_NO_MEMORY();
         }
     }
 #endif
@@ -838,15 +844,15 @@ _PyTraceMalloc_Init(void)
 
     tracemalloc_tracebacks = hashtable_new(hashtable_hash_traceback,
                                            hashtable_compare_traceback,
-                                           NULL, raw_free);
+                                           raw_free, NULL);
 
     tracemalloc_traces = tracemalloc_create_traces_table();
     tracemalloc_domains = tracemalloc_create_domains_table();
 
     if (tracemalloc_filenames == NULL || tracemalloc_tracebacks == NULL
-       || tracemalloc_traces == NULL || tracemalloc_domains == NULL) {
-        PyErr_NoMemory();
-        return -1;
+       || tracemalloc_traces == NULL || tracemalloc_domains == NULL)
+    {
+        return _PyStatus_NO_MEMORY();
     }
 
     tracemalloc_empty_traceback.nframe = 1;
@@ -857,7 +863,7 @@ _PyTraceMalloc_Init(void)
     tracemalloc_empty_traceback.hash = traceback_hash(&tracemalloc_empty_traceback);
 
     tracemalloc_config.initialized = TRACEMALLOC_INITIALIZED;
-    return 0;
+    return _PyStatus_OK();
 }
 
 
@@ -902,10 +908,6 @@ _PyTraceMalloc_Start(int max_nframe)
         return -1;
     }
 
-    if (_PyTraceMalloc_Init() < 0) {
-        return -1;
-    }
-
     if (PyRefTracer_SetTracer(_PyTraceMalloc_TraceRef, NULL) < 0) {
         return -1;
     }
@@ -960,8 +962,13 @@ _PyTraceMalloc_Start(int max_nframe)
 void
 _PyTraceMalloc_Stop(void)
 {
-    if (!tracemalloc_config.tracing)
-        return;
+    // Lock to synchronize with tracemalloc_free() which checks
+    // 'tracing' while holding the lock.
+    TABLES_LOCK();
+
+    if (!tracemalloc_config.tracing) {
+        goto done;
+    }
 
     /* stop tracing Python memory allocations */
     tracemalloc_config.tracing = 0;
@@ -973,11 +980,16 @@ _PyTraceMalloc_Stop(void)
     PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem);
     PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj);
 
-    tracemalloc_clear_traces();
+    tracemalloc_clear_traces_unlocked();
 
     /* release memory */
     raw_free(tracemalloc_traceback);
     tracemalloc_traceback = NULL;
+
+    (void)PyRefTracer_SetTracer(NULL, NULL);
+
+done:
+    TABLES_UNLOCK();
 }
 
 
@@ -1227,23 +1239,17 @@ tracemalloc_pyobject_decref(void *value)
 
 
 static traceback_t*
-tracemalloc_get_traceback(unsigned int domain, uintptr_t ptr)
+tracemalloc_get_traceback_unlocked(unsigned int domain, uintptr_t ptr)
 {
-
-    if (!tracemalloc_config.tracing)
+    if (!tracemalloc_config.tracing) {
         return NULL;
+    }
 
-    trace_t *trace;
-    TABLES_LOCK();
     _Py_hashtable_t *traces = tracemalloc_get_traces_table(domain);
+    trace_t *trace = NULL;
     if (traces) {
         trace = _Py_hashtable_get(traces, TO_PTR(ptr));
     }
-    else {
-        trace = NULL;
-    }
-    TABLES_UNLOCK();
-
     if (!trace) {
         return NULL;
     }
@@ -1272,13 +1278,20 @@ _PyMem_DumpTraceback(int fd, const void *ptr)
     traceback_t *traceback;
     int i;
 
-    if (!tracemalloc_config.tracing) {
+    TABLES_LOCK();
+
+    if (tracemalloc_config.tracing) {
+        traceback = tracemalloc_get_traceback_unlocked(DEFAULT_DOMAIN,
+                                                       (uintptr_t)ptr);
+    }
+    else {
+        traceback = NULL;
         PUTS(fd, "Enable tracemalloc to get the memory block "
                  "allocation traceback\n\n");
-        return;
     }
 
-    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr);
+    TABLES_UNLOCK();
+
     if (traceback == NULL)
         return;
 
@@ -1307,38 +1320,62 @@ int
 PyTraceMalloc_Track(unsigned int domain, uintptr_t ptr,
                     size_t size)
 {
-    int res;
-    PyGILState_STATE gil_state;
+    PyGILState_STATE gil_state = PyGILState_Ensure();
+    int result;
 
+    // gh-129185: Check before TABLES_LOCK() to support calls after
+    // _PyTraceMalloc_Fini().
     if (!tracemalloc_config.tracing) {
-        /* tracemalloc is not tracing: do nothing */
-        return -2;
+        result = -2;
+        goto done;
     }
 
-    gil_state = PyGILState_Ensure();
-
     TABLES_LOCK();
-    res = tracemalloc_add_trace(domain, ptr, size);
-    TABLES_UNLOCK();
 
+    if (tracemalloc_config.tracing) {
+        result = tracemalloc_add_trace(domain, ptr, size);
+    }
+    else {
+        // gh-128679: tracemalloc.stop() was called by another thread
+        result = -2;
+    }
+
+    TABLES_UNLOCK();
+done:
     PyGILState_Release(gil_state);
-    return res;
+    return result;
 }
 
 
 int
 PyTraceMalloc_Untrack(unsigned int domain, uintptr_t ptr)
 {
+    // Need the GIL to prevent races on the first 'tracing' test
+    PyGILState_STATE gil_state = PyGILState_Ensure();
+    int result;
+
+    // gh-129185: Check before TABLES_LOCK() to support calls after
+    // _PyTraceMalloc_Fini()
     if (!tracemalloc_config.tracing) {
-        /* tracemalloc is not tracing: do nothing */
-        return -2;
+        result = -2;
+        goto done;
     }
 
     TABLES_LOCK();
-    tracemalloc_remove_trace(domain, ptr);
-    TABLES_UNLOCK();
 
-    return 0;
+    if (tracemalloc_config.tracing) {
+        tracemalloc_remove_trace(domain, ptr);
+        result = 0;
+    }
+    else {
+        /* tracemalloc is not tracing: do nothing */
+        result = -2;
+    }
+
+    TABLES_UNLOCK();
+done:
+    PyGILState_Release(gil_state);
+    return result;
 }
 
 
@@ -1376,6 +1413,12 @@ _PyTraceMalloc_TraceRef(PyObject *op, PyRefTracerEvent event, void* Py_UNUSED(ig
     int res = -1;
 
     TABLES_LOCK();
+
+    if (!tracemalloc_config.tracing) {
+        // gh-128679: tracemalloc.stop() was called by another thread
+        goto done;
+    }
+
     trace_t *trace = _Py_hashtable_get(tracemalloc_traces, TO_PTR(ptr));
     if (trace != NULL) {
         /* update the traceback of the memory block */
@@ -1386,6 +1429,8 @@ _PyTraceMalloc_TraceRef(PyObject *op, PyRefTracerEvent event, void* Py_UNUSED(ig
         }
     }
     /* else: cannot track the object, its memory block size is unknown */
+
+done:
     TABLES_UNLOCK();
 
     return res;
@@ -1397,7 +1442,9 @@ _PyTraceMalloc_GetTraceback(unsigned int domain, uintptr_t ptr)
 {
     traceback_t *traceback;
 
-    traceback = tracemalloc_get_traceback(domain, ptr);
+    TABLES_LOCK();
+    traceback = tracemalloc_get_traceback_unlocked(domain, ptr);
+    TABLES_UNLOCK();
     if (traceback == NULL)
         Py_RETURN_NONE;
 
@@ -1407,19 +1454,20 @@ _PyTraceMalloc_GetTraceback(unsigned int domain, uintptr_t ptr)
 int
 _PyTraceMalloc_IsTracing(void)
 {
-    return tracemalloc_config.tracing;
+    TABLES_LOCK();
+    int tracing = tracemalloc_config.tracing;
+    TABLES_UNLOCK();
+    return tracing;
 }
 
 void
 _PyTraceMalloc_ClearTraces(void)
 {
-
-    if (!tracemalloc_config.tracing) {
-        return;
+    TABLES_LOCK();
+    if (tracemalloc_config.tracing) {
+        tracemalloc_clear_traces_unlocked();
     }
-    set_reentrant(1);
-    tracemalloc_clear_traces();
-    set_reentrant(0);
+    TABLES_UNLOCK();
 }
 
 PyObject *
@@ -1506,19 +1554,10 @@ PyObject *
 _PyTraceMalloc_GetObjectTraceback(PyObject *obj)
 /*[clinic end generated code: output=41ee0553a658b0aa input=29495f1b21c53212]*/
 {
-    PyTypeObject *type;
-    traceback_t *traceback;
-
-    type = Py_TYPE(obj);
+    PyTypeObject *type = Py_TYPE(obj);
     const size_t presize = _PyType_PreHeaderSize(type);
     uintptr_t ptr = (uintptr_t)((char *)obj - presize);
-
-    traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, ptr);
-    if (traceback == NULL) {
-        Py_RETURN_NONE;
-    }
-
-    return traceback_to_pyobject(traceback, NULL);
+    return _PyTraceMalloc_GetTraceback(DEFAULT_DOMAIN, ptr);
 }
 
 int _PyTraceMalloc_GetTracebackLimit(void) {
@@ -1530,14 +1569,19 @@ _PyTraceMalloc_GetMemory(void) {
 
     size_t size;
 
-    size = _Py_hashtable_size(tracemalloc_tracebacks);
-    size += _Py_hashtable_size(tracemalloc_filenames);
-
     TABLES_LOCK();
-    size += _Py_hashtable_size(tracemalloc_traces);
-    _Py_hashtable_foreach(tracemalloc_domains,
-                          tracemalloc_get_tracemalloc_memory_cb, &size);
+    if (tracemalloc_config.tracing) {
+        size = _Py_hashtable_size(tracemalloc_tracebacks);
+        size += _Py_hashtable_size(tracemalloc_filenames);
+        size += _Py_hashtable_size(tracemalloc_traces);
+        _Py_hashtable_foreach(tracemalloc_domains,
+                              tracemalloc_get_tracemalloc_memory_cb, &size);
+    }
+    else {
+        size = 0;
+    }
     TABLES_UNLOCK();
+
     return size;
 }
 
@@ -1547,12 +1591,15 @@ _PyTraceMalloc_GetTracedMemory(void)
 {
     Py_ssize_t size, peak_size;
 
-    if (!tracemalloc_config.tracing)
-        return Py_BuildValue("ii", 0, 0);
-
     TABLES_LOCK();
-    size = tracemalloc_traced_memory;
-    peak_size = tracemalloc_peak_traced_memory;
+    if (tracemalloc_config.tracing) {
+        size = tracemalloc_traced_memory;
+        peak_size = tracemalloc_peak_traced_memory;
+    }
+    else {
+        size = 0;
+        peak_size = 0;
+    }
     TABLES_UNLOCK();
 
     return Py_BuildValue("nn", size, peak_size);
@@ -1561,10 +1608,9 @@ _PyTraceMalloc_GetTracedMemory(void)
 void
 _PyTraceMalloc_ResetPeak(void)
 {
-    if (!tracemalloc_config.tracing) {
-        return;
-    }
     TABLES_LOCK();
-    tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
+    if (tracemalloc_config.tracing) {
+        tracemalloc_peak_traced_memory = tracemalloc_traced_memory;
+    }
     TABLES_UNLOCK();
 }
diff --git a/README.rst b/README.rst
index ba8ba82ed87e3f..dfb321505ef412 100644
--- a/README.rst
+++ b/README.rst
@@ -1,5 +1,5 @@
-This is Python version 3.13.0 beta 1
-====================================
+This is Python version 3.13.1
+=============================
 
 .. image:: https://github.com/python/cpython/workflows/Tests/badge.svg
    :alt: CPython build status on GitHub Actions
@@ -64,7 +64,7 @@ the executable is called ``python.exe``; elsewhere it's just ``python``.
 Building a complete Python installation requires the use of various
 additional third-party libraries, depending on your build platform and
 configure options.  Not all standard library modules are buildable or
-useable on all platforms.  Refer to the
+usable on all platforms.  Refer to the
 `Install dependencies <https://devguide.python.org/getting-started/setup-building.html#build-dependencies>`_
 section of the `Developer Guide`_ for current detailed information on
 dependencies for various Linux distributions and macOS.
diff --git a/Tools/build/check_extension_modules.py b/Tools/build/check_extension_modules.py
index a9fee4981ea915..66b2a262e11c57 100644
--- a/Tools/build/check_extension_modules.py
+++ b/Tools/build/check_extension_modules.py
@@ -27,6 +27,7 @@
 import sys
 import sysconfig
 import warnings
+import _imp
 
 from importlib._bootstrap import _load as bootstrap_load
 from importlib.machinery import BuiltinImporter, ExtensionFileLoader, ModuleSpec
@@ -53,6 +54,7 @@
     "_overlapped",
     "_testconsole",
     "_winapi",
+    "_wmi",
     "msvcrt",
     "nt",
     "winreg",
@@ -153,6 +155,11 @@ def __init__(self, cross_compiling: bool = False, strict: bool = False):
         self.notavailable = []
 
     def check(self):
+        if not hasattr(_imp, 'create_dynamic'):
+            logger.warning(
+                ('Dynamic extensions not supported '
+                 '(HAVE_DYNAMIC_LOADING not defined)'),
+            )
         for modinfo in self.modules:
             logger.debug("Checking '%s' (%s)", modinfo.name, self.get_location(modinfo))
             if modinfo.state == ModuleState.DISABLED:
@@ -414,6 +421,9 @@ def check_module_import(self, modinfo: ModuleInfo):
             logger.error("%s failed to import: %s", modinfo.name, e)
             raise
         except Exception as e:
+            if not hasattr(_imp, 'create_dynamic'):
+                logger.warning("Dynamic extension '%s' ignored", modinfo.name)
+                return
             logger.exception("Importing extension '%s' failed!", modinfo.name)
             raise
 
diff --git a/Tools/build/generate_global_objects.py b/Tools/build/generate_global_objects.py
index 33d1b323fc1753..882918fafb1edd 100644
--- a/Tools/build/generate_global_objects.py
+++ b/Tools/build/generate_global_objects.py
@@ -370,9 +370,14 @@ def generate_static_strings_initializer(identifiers, strings):
                 # This use of _Py_ID() is ignored by iter_global_strings()
                 # since iter_files() ignores .h files.
                 printer.write(f'string = &_Py_ID({i});')
+                printer.write(f'_PyUnicode_InternStatic(interp, &string);')
                 printer.write(f'assert(_PyUnicode_CheckConsistency(string, 1));')
-                printer.write(f'_PyUnicode_InternInPlace(interp, &string);')
-            # XXX What about "strings"?
+                printer.write(f'assert(PyUnicode_GET_LENGTH(string) != 1);')
+            for value, name in sorted(strings.items()):
+                printer.write(f'string = &_Py_STR({name});')
+                printer.write(f'_PyUnicode_InternStatic(interp, &string);')
+                printer.write(f'assert(_PyUnicode_CheckConsistency(string, 1));')
+                printer.write(f'assert(PyUnicode_GET_LENGTH(string) != 1);')
         printer.write(END)
         printer.write(after)
 
@@ -414,15 +419,31 @@ def generate_global_object_finalizers(generated_immortal_objects):
 def get_identifiers_and_strings() -> 'tuple[set[str], dict[str, str]]':
     identifiers = set(IDENTIFIERS)
     strings = {}
+    # Note that we store strings as they appear in C source, so the checks here
+    # can be defeated, e.g.:
+    # - "a" and "\0x61" won't be reported as duplicate.
+    # - "\n" appears as 2 characters.
+    # Probably not worth adding a C string parser.
     for name, string, *_ in iter_global_strings():
         if string is None:
             if name not in IGNORED:
                 identifiers.add(name)
         else:
+            if len(string) == 1 and ord(string) < 256:
+                # Give a nice message for common mistakes.
+                # To cover tricky cases (like "\n") we also generate C asserts.
+                raise ValueError(
+                    'do not use &_PyID or &_Py_STR for one-character latin-1 '
+                    + f'strings, use _Py_LATIN1_CHR instead: {string!r}')
             if string not in strings:
                 strings[string] = name
             elif name != strings[string]:
                 raise ValueError(f'string mismatch for {name!r} ({string!r} != {strings[name]!r}')
+    overlap = identifiers & set(strings.keys())
+    if overlap:
+        raise ValueError(
+            'do not use both _PyID and _Py_DECLARE_STR for the same string: '
+            + repr(overlap))
     return identifiers, strings
 
 
diff --git a/Tools/build/generate_re_casefix.py b/Tools/build/generate_re_casefix.py
index b57ac07426c27c..6cebfbd025c58c 100755
--- a/Tools/build/generate_re_casefix.py
+++ b/Tools/build/generate_re_casefix.py
@@ -23,9 +23,9 @@ def update_file(file, content):
 
 # Maps the code of lowercased character to codes of different lowercased
 # characters which have the same uppercase.
-_EXTRA_CASES = {
+_EXTRA_CASES = {{
 %s
-}
+}}
 """
 
 def uname(i):
diff --git a/Tools/build/generate_sbom.py b/Tools/build/generate_sbom.py
index 258b58c03c6800..3299e4479e4a2e 100644
--- a/Tools/build/generate_sbom.py
+++ b/Tools/build/generate_sbom.py
@@ -59,6 +59,8 @@ class PackageFiles(typing.NamedTuple):
         include=["Modules/expat/**"],
         exclude=[
             "Modules/expat/expat_config.h",
+            "Modules/expat/pyexpatns.h",
+            "Modules/_hacl/refresh.sh",
         ]
     ),
     "macholib": PackageFiles(
@@ -96,6 +98,19 @@ def error_if(value: bool, error_message: str) -> None:
         sys.exit(1)
 
 
+def is_root_directory_git_index() -> bool:
+    """Checks if the root directory is a git index"""
+    try:
+        subprocess.check_call(
+            ["git", "-C", str(CPYTHON_ROOT_DIR), "rev-parse"],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+        )
+    except subprocess.CalledProcessError:
+        return False
+    return True
+
+
 def filter_gitignored_paths(paths: list[str]) -> list[str]:
     """
     Filter out paths excluded by the gitignore file.
@@ -108,6 +123,10 @@ def filter_gitignored_paths(paths: list[str]) -> list[str]:
 
         '.gitignore:9:*.a    Tools/lib.a'
     """
+    # No paths means no filtering to be done.
+    if not paths:
+        return []
+
     # Filter out files in gitignore.
     # Non-matching files show up as '::<whitespace><path>'
     git_check_ignore_proc = subprocess.run(
@@ -204,6 +223,32 @@ def check_sbom_packages(sbom_data: dict[str, typing.Any]) -> None:
                 "HACL* SBOM version doesn't match value in 'Modules/_hacl/refresh.sh'"
             )
 
+        # libexpat specifies its expected rev in a refresh script.
+        if package["name"] == "libexpat":
+            libexpat_refresh_sh = (CPYTHON_ROOT_DIR / "Modules/expat/refresh.sh").read_text()
+            libexpat_expected_version_match = re.search(
+                r"expected_libexpat_version=\"([0-9]+\.[0-9]+\.[0-9]+)\"",
+                libexpat_refresh_sh
+            )
+            libexpat_expected_sha256_match = re.search(
+                r"expected_libexpat_sha256=\"[a-f0-9]{40}\"",
+                libexpat_refresh_sh
+            )
+            libexpat_expected_version = libexpat_expected_version_match and libexpat_expected_version_match.group(1)
+            libexpat_expected_sha256 = libexpat_expected_sha256_match and libexpat_expected_sha256_match.group(1)
+
+            error_if(
+                libexpat_expected_version != version,
+                "libexpat SBOM version doesn't match value in 'Modules/expat/refresh.sh'"
+            )
+            error_if(
+                package["checksums"] != [{
+                    "algorithm": "SHA256",
+                    "checksumValue": libexpat_expected_sha256
+                }],
+                "libexpat SBOM checksum doesn't match value in 'Modules/expat/refresh.sh'"
+            )
+
         # License must be on the approved list for SPDX.
         license_concluded = package["licenseConcluded"]
         error_if(
@@ -305,7 +350,21 @@ def create_externals_sbom() -> None:
 
     # Set the versionInfo and downloadLocation fields for all packages.
     for package in sbom_data["packages"]:
-        package["versionInfo"] = externals_name_to_version[package["name"]]
+        package_version = externals_name_to_version[package["name"]]
+
+        # Update the version information in all the locations.
+        package["versionInfo"] = package_version
+        for external_ref in package["externalRefs"]:
+            if external_ref["referenceType"] != "cpe23Type":
+                continue
+            # Version is the fifth field of a CPE.
+            cpe23ref = external_ref["referenceLocator"]
+            external_ref["referenceLocator"] = re.sub(
+                r"\A(cpe(?::[^:]+){4}):[^:]+:",
+                fr"\1:{package_version}:",
+                cpe23ref
+            )
+
         download_location = (
             f"https://github.com/python/cpython-source-deps/archive/refs/tags/{externals_name_to_git_tag[package['name']]}.tar.gz"
         )
@@ -323,6 +382,11 @@ def create_externals_sbom() -> None:
 
 
 def main() -> None:
+    # Don't regenerate the SBOM if we're not a git repository.
+    if not is_root_directory_git_index():
+        print("Skipping SBOM generation due to not being a git repository")
+        return
+
     create_source_sbom()
     create_externals_sbom()
 
diff --git a/Tools/build/generate_token.py b/Tools/build/generate_token.py
index 16c38841e44a4d..d32747f19945d8 100755
--- a/Tools/build/generate_token.py
+++ b/Tools/build/generate_token.py
@@ -226,7 +226,8 @@ def make_rst(infile, outfile='Doc/library/token-list.inc'):
 # {AUTO_GENERATED_BY_SCRIPT}
 '''
 token_py_template += '''
-__all__ = ['tok_name', 'ISTERMINAL', 'ISNONTERMINAL', 'ISEOF']
+__all__ = ['tok_name', 'ISTERMINAL', 'ISNONTERMINAL', 'ISEOF',
+           'EXACT_TOKEN_TYPES']
 
 %s
 N_TOKENS = %d
diff --git a/Tools/build/mypy.ini b/Tools/build/mypy.ini
index cf1dac7fde5ac5..0e5d6e874a72e5 100644
--- a/Tools/build/mypy.ini
+++ b/Tools/build/mypy.ini
@@ -8,6 +8,6 @@ python_version = 3.10
 
 # ...And be strict:
 strict = True
-strict_concatenate = True
+extra_checks = True
 enable_error_code = ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
 warn_unreachable = True
diff --git a/Tools/build/regen-configure.sh b/Tools/build/regen-configure.sh
index e34a36c1a573e5..e1ecefddeb8732 100755
--- a/Tools/build/regen-configure.sh
+++ b/Tools/build/regen-configure.sh
@@ -2,15 +2,13 @@
 
 set -e -x
 
-# The check_generated_files job of .github/workflows/build.yml must kept in
+# The check_autoconf_regen job of .github/workflows/build.yml must kept in
 # sync with this script. Use the same container image than the job so the job
 # doesn't need to run autoreconf in a container.
-IMAGE="ubuntu:22.04"
-DEPENDENCIES="autotools-dev autoconf autoconf-archive pkg-config"
+IMAGE="ghcr.io/python/autoconf:2024.10.16.11360930377"
 AUTORECONF="autoreconf -ivf -Werror"
 
 WORK_DIR="/src"
-SHELL_CMD="apt-get update && apt-get -yq install $DEPENDENCIES && cd $WORK_DIR && $AUTORECONF"
 
 abs_srcdir=$(cd $(dirname $0)/../..; pwd)
 
@@ -28,4 +26,4 @@ if command -v selinuxenabled >/dev/null && selinuxenabled; then
     PATH_OPT=":Z"
 fi
 
-"$RUNTIME" run --rm -v "$abs_srcdir:$WORK_DIR$PATH_OPT" "$IMAGE" /usr/bin/bash -c "$SHELL_CMD"
+"$RUNTIME" run --rm -v "$abs_srcdir:$WORK_DIR$PATH_OPT" "$IMAGE"
diff --git a/Tools/build/stable_abi.py b/Tools/build/stable_abi.py
index 8b01c91e0d6bb3..f7fccb636858f0 100644
--- a/Tools/build/stable_abi.py
+++ b/Tools/build/stable_abi.py
@@ -225,9 +225,9 @@ def sort_key(item):
             key=sort_key):
         write(f'EXPORT_DATA({item.name})')
 
-REST_ROLES = {
-    'function': 'function',
-    'data': 'var',
+ITEM_KIND_TO_DOC_ROLE = {
+    'function': 'func',
+    'data': 'data',
     'struct': 'type',
     'macro': 'macro',
     # 'const': 'const',  # all undocumented
@@ -236,22 +236,28 @@ def sort_key(item):
 
 @generator("doc_list", 'Doc/data/stable_abi.dat')
 def gen_doc_annotations(manifest, args, outfile):
-    """Generate/check the stable ABI list for documentation annotations"""
+    """Generate/check the stable ABI list for documentation annotations
+
+    See ``StableABIEntry`` in ``Doc/tools/extensions/c_annotations.py``
+    for a description of each field.
+    """
     writer = csv.DictWriter(
         outfile,
         ['role', 'name', 'added', 'ifdef_note', 'struct_abi_kind'],
         lineterminator='\n')
     writer.writeheader()
-    for item in manifest.select(REST_ROLES.keys(), include_abi_only=False):
+    kinds = set(ITEM_KIND_TO_DOC_ROLE)
+    for item in manifest.select(kinds, include_abi_only=False):
         if item.ifdef:
             ifdef_note = manifest.contents[item.ifdef].doc
         else:
             ifdef_note = None
         row = {
-            'role': REST_ROLES[item.kind],
+            'role': ITEM_KIND_TO_DOC_ROLE[item.kind],
             'name': item.name,
             'added': item.added,
-            'ifdef_note': ifdef_note}
+            'ifdef_note': ifdef_note,
+        }
         rows = [row]
         if item.kind == 'struct':
             row['struct_abi_kind'] = item.struct_abi_kind
@@ -259,7 +265,8 @@ def gen_doc_annotations(manifest, args, outfile):
                 rows.append({
                     'role': 'member',
                     'name': f'{item.name}.{member_name}',
-                    'added': item.added})
+                    'added': item.added,
+                })
         writer.writerows(rows)
 
 @generator("ctypes_test", 'Lib/test/test_stable_abi_ctypes.py')
diff --git a/Tools/c-analyzer/c_parser/preprocessor/gcc.py b/Tools/c-analyzer/c_parser/preprocessor/gcc.py
index bb5ec5ae087a74..d20cd19f6e6d5e 100644
--- a/Tools/c-analyzer/c_parser/preprocessor/gcc.py
+++ b/Tools/c-analyzer/c_parser/preprocessor/gcc.py
@@ -149,7 +149,7 @@ def _iter_top_include_lines(lines, topfile, cwd,
                             raw):
     partial = 0  # depth
     files = [topfile]
-    # We start at 1 in case there are source lines (including blank onces)
+    # We start at 1 in case there are source lines (including blank ones)
     # before the first marker line.  Also, we already verified in
     # _parse_marker_line() that the preprocessor reported lno as 1.
     lno = 1
diff --git a/Tools/c-analyzer/cpython/globals-to-fix.tsv b/Tools/c-analyzer/cpython/globals-to-fix.tsv
index 1b8cccf80872c8..06e58e92184efa 100644
--- a/Tools/c-analyzer/cpython/globals-to-fix.tsv
+++ b/Tools/c-analyzer/cpython/globals-to-fix.tsv
@@ -304,6 +304,10 @@ Python/crossinterp_exceptions.h	-	PyExc_InterpreterNotFoundError	-
 ##-----------------------
 ## singletons
 
+Modules/_datetimemodule.c	-	zero_delta	-
+Modules/_datetimemodule.c	-	utc_timezone	-
+Modules/_datetimemodule.c	-	capi	-
+Modules/_datetimemodule.c	-	_globals	-
 Objects/boolobject.c	-	_Py_FalseStruct	-
 Objects/boolobject.c	-	_Py_TrueStruct	-
 Objects/dictobject.c	-	empty_keys_struct	-
@@ -430,7 +434,6 @@ Modules/_ctypes/_ctypes.c	CreateSwappedType	swapped_suffix	-
 Modules/_ctypes/_ctypes.c	-	_unpickle	-
 Modules/_ctypes/_ctypes.c	PyCArrayType_from_ctype	array_cache	-
 Modules/_cursesmodule.c	-	ModDict	-
-Modules/_datetimemodule.c	datetime_strptime	module	-
 
 ## state
 Modules/_ctypes/_ctypes.c	-	_ctypes_ptrtype_cache	-
diff --git a/Tools/c-analyzer/cpython/ignored.tsv b/Tools/c-analyzer/cpython/ignored.tsv
index a1c1553d8ddc10..5e271a5014cb35 100644
--- a/Tools/c-analyzer/cpython/ignored.tsv
+++ b/Tools/c-analyzer/cpython/ignored.tsv
@@ -217,6 +217,7 @@ Modules/_datetimemodule.c	-	max_fold_seconds	-
 Modules/_datetimemodule.c	datetime_isoformat	specs	-
 Modules/_datetimemodule.c	parse_hh_mm_ss_ff	correction	-
 Modules/_datetimemodule.c	time_isoformat	specs	-
+Modules/_datetimemodule.c	-	capi_types	-
 Modules/_decimal/_decimal.c	-	cond_map_template	-
 Modules/_decimal/_decimal.c	-	dec_signal_string	-
 Modules/_decimal/_decimal.c	-	dflt_ctx	-
@@ -594,6 +595,7 @@ Modules/_testmultiphase.c	-	slots_nonmodule_with_exec_slots	-
 Modules/_testmultiphase.c	-	testexport_methods	-
 Modules/_testmultiphase.c	-	uninitialized_def	-
 Modules/_testsinglephase.c	-	global_state	-
+Modules/_testsinglephase.c	-	static_module_circular	-
 Modules/_xxtestfuzz/_xxtestfuzz.c	-	_fuzzmodule	-
 Modules/_xxtestfuzz/_xxtestfuzz.c	-	module_methods	-
 Modules/_xxtestfuzz/fuzzer.c	-	RE_FLAG_DEBUG	-
@@ -740,6 +742,7 @@ Modules/expat/xmlrole.c	-	declClose	-
 Modules/expat/xmlrole.c	-	error	-
 
 ## other
+Modules/grpmodule.c	grp_getgrall_impl	getgrall_mutex	-
 Modules/_io/_iomodule.c	-	_PyIO_Module	-
 Modules/_sqlite/module.c	-	_sqlite3module	-
 Modules/clinic/md5module.c.h	_md5_md5	_keywords	-
diff --git a/Tools/cases_generator/analyzer.py b/Tools/cases_generator/analyzer.py
index fdb635486b9531..77e5e932feb5b9 100644
--- a/Tools/cases_generator/analyzer.py
+++ b/Tools/cases_generator/analyzer.py
@@ -300,9 +300,13 @@ def analyze_stack(op: parser.InstDef, replace_op_arg_1: str | None = None) -> St
         convert_stack_item(i, replace_op_arg_1) for i in op.inputs if isinstance(i, parser.StackEffect)
     ]
     outputs: list[StackItem] = [convert_stack_item(i, replace_op_arg_1) for i in op.outputs]
+    # Mark variables with matching names at the base of the stack as "peek"
+    modified = False
     for input, output in zip(inputs, outputs):
-        if input.name == output.name:
+        if input.name == output.name and not modified:
             input.peek = output.peek = True
+        else:
+            modified = True
     return StackEffect(inputs, outputs)
 
 
diff --git a/Tools/cases_generator/generators_common.py b/Tools/cases_generator/generators_common.py
index cc9eb8a0e90eeb..acb5ac3a50a3f7 100644
--- a/Tools/cases_generator/generators_common.py
+++ b/Tools/cases_generator/generators_common.py
@@ -84,7 +84,7 @@ def replace_error(
     next(tkn_iter)  # RPAREN
     next(tkn_iter)  # Semi colon
     out.emit(") ")
-    c_offset = stack.peek_offset.to_c()
+    c_offset = stack.peek_offset()
     try:
         offset = -int(c_offset)
         close = ";\n"
diff --git a/Tools/cases_generator/mypy.ini b/Tools/cases_generator/mypy.ini
index 8e5a31851c596e..e54349bf54a954 100644
--- a/Tools/cases_generator/mypy.ini
+++ b/Tools/cases_generator/mypy.ini
@@ -8,7 +8,7 @@ python_version = 3.10
 
 # ...And be strict:
 strict = True
-strict_concatenate = True
+extra_checks = True
 enable_error_code = ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
 warn_unreachable = True
 allow_redefinition = True
diff --git a/Tools/cases_generator/stack.py b/Tools/cases_generator/stack.py
index 5aecac39aef5e2..e0038631c1b82e 100644
--- a/Tools/cases_generator/stack.py
+++ b/Tools/cases_generator/stack.py
@@ -47,6 +47,9 @@ class StackOffset:
     def empty() -> "StackOffset":
         return StackOffset([], [])
 
+    def copy(self) -> "StackOffset":
+        return StackOffset(self.popped[:], self.pushed[:])
+
     def pop(self, item: StackItem) -> None:
         self.popped.append(var_size(item))
 
@@ -120,14 +123,11 @@ class Stack:
     def __init__(self) -> None:
         self.top_offset = StackOffset.empty()
         self.base_offset = StackOffset.empty()
-        self.peek_offset = StackOffset.empty()
         self.variables: list[StackItem] = []
         self.defined: set[str] = set()
 
     def pop(self, var: StackItem) -> str:
         self.top_offset.pop(var)
-        if not var.peek:
-            self.peek_offset.pop(var)
         indirect = "&" if var.is_array() else ""
         if self.variables:
             popped = self.variables.pop()
@@ -201,9 +201,16 @@ def flush(self, out: CWriter, cast_type: str = "PyObject *") -> None:
         self.variables = []
         self.base_offset.clear()
         self.top_offset.clear()
-        self.peek_offset.clear()
         out.start_line()
 
+    def peek_offset(self) -> str:
+        peek = self.base_offset.copy()
+        for var in self.variables:
+            if not var.peek:
+                break
+            peek.push(var)
+        return peek.to_c()
+
     def as_comment(self) -> str:
         return f"/* Variables: {[v.name for v in self.variables]}. Base offset: {self.base_offset.to_c()}. Top offset: {self.top_offset.to_c()} */"
 
diff --git a/Tools/clinic/libclinic/clanguage.py b/Tools/clinic/libclinic/clanguage.py
index 10efedd5cb9cea..73d47833d97294 100644
--- a/Tools/clinic/libclinic/clanguage.py
+++ b/Tools/clinic/libclinic/clanguage.py
@@ -21,6 +21,16 @@
     from libclinic.app import Clinic
 
 
+def c_id(name: str) -> str:
+    if len(name) == 1 and ord(name) < 256:
+        if name.isalnum():
+            return f"_Py_LATIN1_CHR('{name}')"
+        else:
+            return f'_Py_LATIN1_CHR({ord(name)})'
+    else:
+        return f'&_Py_ID({name})'
+
+
 class CLanguage(Language):
 
     body_prefix   = "#"
@@ -167,11 +177,11 @@ def deprecate_keyword_use(
                 if argname_fmt:
                     conditions.append(f"nargs < {i+1} && {argname_fmt % i}")
                 elif fastcall:
-                    conditions.append(f"nargs < {i+1} && PySequence_Contains(kwnames, &_Py_ID({p.name}))")
+                    conditions.append(f"nargs < {i+1} && PySequence_Contains(kwnames, {c_id(p.name)})")
                     containscheck = "PySequence_Contains"
                     codegen.add_include('pycore_runtime.h', '_Py_ID()')
                 else:
-                    conditions.append(f"nargs < {i+1} && PyDict_Contains(kwargs, &_Py_ID({p.name}))")
+                    conditions.append(f"nargs < {i+1} && PyDict_Contains(kwargs, {c_id(p.name)})")
                     containscheck = "PyDict_Contains"
                     codegen.add_include('pycore_runtime.h', '_Py_ID()')
             else:
@@ -459,7 +469,7 @@ def render_function(
         template_dict['keywords_c'] = ' '.join('"' + k + '",'
                                                for k in data.keywords)
         keywords = [k for k in data.keywords if k]
-        template_dict['keywords_py'] = ' '.join('&_Py_ID(' + k + '),'
+        template_dict['keywords_py'] = ' '.join(c_id(k) + ','
                                                 for k in keywords)
         template_dict['format_units'] = ''.join(data.format_units)
         template_dict['parse_arguments'] = ', '.join(data.parse_arguments)
diff --git a/Tools/clinic/libclinic/cpp.py b/Tools/clinic/libclinic/cpp.py
index e115d65a88e1b6..3cfe99b712641d 100644
--- a/Tools/clinic/libclinic/cpp.py
+++ b/Tools/clinic/libclinic/cpp.py
@@ -132,6 +132,9 @@ def pop_stack() -> TokenAndCondition:
         if line_comment:
             line = before.rstrip()
 
+        if self.in_comment:
+            return
+
         if not line.startswith('#'):
             return
 
diff --git a/Tools/clinic/libclinic/dsl_parser.py b/Tools/clinic/libclinic/dsl_parser.py
index cb18374cf07e3c..27c042155eba7c 100644
--- a/Tools/clinic/libclinic/dsl_parser.py
+++ b/Tools/clinic/libclinic/dsl_parser.py
@@ -915,8 +915,8 @@ def parse_parameter(self, line: str) -> None:
                  f"invalid parameter declaration (**kwargs?): {line!r}")
 
         if function_args.vararg:
-            if any(p.is_vararg() for p in self.function.parameters.values()):
-                fail("Too many var args")
+            self.check_previous_star()
+            self.check_remaining_star()
             is_vararg = True
             parameter = function_args.vararg
         else:
@@ -1124,6 +1124,9 @@ def bad_node(self, node: ast.AST) -> None:
         key = f"{parameter_name}_as_{c_name}" if c_name else parameter_name
         self.function.parameters[key] = p
 
+        if is_vararg:
+            self.keyword_only = True
+
     @staticmethod
     def parse_converter(
         annotation: ast.expr | None
@@ -1165,8 +1168,6 @@ def parse_star(self, function: Function, version: VersionTuple | None) -> None:
         the marker will take effect (None means it is already in effect).
         """
         if version is None:
-            if self.keyword_only:
-                fail(f"Function {function.name!r} uses '*' more than once.")
             self.check_previous_star()
             self.check_remaining_star()
             self.keyword_only = True
@@ -1456,6 +1457,7 @@ def add_parameter(text: str) -> None:
 
                 if p.is_vararg():
                     p_lines.append("*")
+                    added_star = True
 
                 name = p.converter.signature_name or p.name
                 p_lines.append(name)
@@ -1565,7 +1567,8 @@ def check_remaining_star(self, lineno: int | None = None) -> None:
 
         for p in reversed(self.function.parameters.values()):
             if self.keyword_only:
-                if p.kind == inspect.Parameter.KEYWORD_ONLY:
+                if (p.kind == inspect.Parameter.KEYWORD_ONLY or
+                    p.kind == inspect.Parameter.VAR_POSITIONAL):
                     return
             elif self.deprecated_positional:
                 if p.deprecated_positional == self.deprecated_positional:
@@ -1575,12 +1578,11 @@ def check_remaining_star(self, lineno: int | None = None) -> None:
         fail(f"Function {self.function.name!r} specifies {symbol!r} "
              f"without following parameters.", line_number=lineno)
 
-    def check_previous_star(self, lineno: int | None = None) -> None:
+    def check_previous_star(self) -> None:
         assert isinstance(self.function, Function)
 
-        for p in self.function.parameters.values():
-            if p.kind == inspect.Parameter.VAR_POSITIONAL:
-                fail(f"Function {self.function.name!r} uses '*' more than once.")
+        if self.keyword_only:
+            fail(f"Function {self.function.name!r} uses '*' more than once.")
 
 
     def do_post_block_processing_cleanup(self, lineno: int) -> None:
diff --git a/Tools/clinic/libclinic/parse_args.py b/Tools/clinic/libclinic/parse_args.py
index 905f2a0ba94f4c..1e6ebdd68367b5 100644
--- a/Tools/clinic/libclinic/parse_args.py
+++ b/Tools/clinic/libclinic/parse_args.py
@@ -38,6 +38,8 @@ def declare_parser(
         p for p in f.parameters.values()
         if not p.is_positional_only() and not p.is_vararg()
     ])
+
+    condition = '#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)'
     if limited_capi:
         declarations = """
             #define KWTUPLE NULL
@@ -50,7 +52,12 @@ def declare_parser(
             #  define KWTUPLE NULL
             #endif
         """
+
+        codegen.add_include('pycore_runtime.h', '_Py_SINGLETON()',
+                            condition=condition)
     else:
+        # XXX Why do we not statically allocate the tuple
+        # for non-builtin modules?
         declarations = """
             #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
 
@@ -71,9 +78,10 @@ def declare_parser(
             #endif  // !Py_BUILD_CORE
         """ % num_keywords
 
-        condition = '#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)'
-        codegen.add_include('pycore_gc.h', 'PyGC_Head', condition=condition)
-        codegen.add_include('pycore_runtime.h', '_Py_ID()', condition=condition)
+        codegen.add_include('pycore_gc.h', 'PyGC_Head',
+                            condition=condition)
+        codegen.add_include('pycore_runtime.h', '_Py_ID()',
+                            condition=condition)
 
     declarations += """
             static const char * const _keywords[] = {{{keywords_c} NULL}};
@@ -138,7 +146,10 @@ def declare_parser(
 GETSET_DOCSTRING_PROTOTYPE_STRVAR: Final[str] = libclinic.normalize_snippet("""
     PyDoc_STRVAR({getset_basename}__doc__,
     {docstring});
-    #define {getset_basename}_HAS_DOCSTR
+    #if defined({getset_basename}_DOCSTR)
+    #   undef {getset_basename}_DOCSTR
+    #endif
+    #define {getset_basename}_DOCSTR {getset_basename}__doc__
 """)
 IMPL_DEFINITION_PROTOTYPE: Final[str] = libclinic.normalize_snippet("""
     static {impl_return_type}
@@ -149,9 +160,7 @@ def declare_parser(
         {{"{name}", {methoddef_cast}{c_basename}{methoddef_cast_end}, {methoddef_flags}, {c_basename}__doc__}},
 """)
 GETTERDEF_PROTOTYPE_DEFINE: Final[str] = libclinic.normalize_snippet(r"""
-    #if defined({getset_basename}_HAS_DOCSTR)
-    #  define {getset_basename}_DOCSTR {getset_basename}__doc__
-    #else
+    #if !defined({getset_basename}_DOCSTR)
     #  define {getset_basename}_DOCSTR NULL
     #endif
     #if defined({getset_name}_GETSETDEF)
@@ -162,9 +171,7 @@ def declare_parser(
     #endif
 """)
 SETTERDEF_PROTOTYPE_DEFINE: Final[str] = libclinic.normalize_snippet(r"""
-    #if defined({getset_name}_HAS_DOCSTR)
-    #  define {getset_basename}_DOCSTR {getset_basename}__doc__
-    #else
+    #if !defined({getset_basename}_DOCSTR)
     #  define {getset_basename}_DOCSTR NULL
     #endif
     #if defined({getset_name}_GETSETDEF)
@@ -254,7 +261,7 @@ def __init__(self, func: Function, codegen: CodeGen) -> None:
             if p.is_keyword_only():
                 assert not p.is_positional_only()
                 if not p.is_optional():
-                    self.min_kw_only = i - self.max_pos
+                    self.min_kw_only = i - self.max_pos - int(self.vararg != NO_VARARG)
             elif p.is_vararg():
                 self.pseudo_args += 1
                 self.vararg = i - 1
diff --git a/Tools/clinic/mypy.ini b/Tools/clinic/mypy.ini
index b1fdad673c61a1..6520e05db0bc31 100644
--- a/Tools/clinic/mypy.ini
+++ b/Tools/clinic/mypy.ini
@@ -7,6 +7,6 @@ python_version = 3.10
 
 # and be strict!
 strict = True
-strict_concatenate = True
+extra_checks = True
 enable_error_code = ignore-without-code,redundant-expr,truthy-bool
 warn_unreachable = True
diff --git a/Tools/i18n/pygettext.py b/Tools/i18n/pygettext.py
index 3a0b27ba420e7a..0d16e8f7da0071 100755
--- a/Tools/i18n/pygettext.py
+++ b/Tools/i18n/pygettext.py
@@ -341,6 +341,9 @@ def __waiting(self, ttype, tstring, lineno):
             if ttype == tokenize.NAME and tstring in ('class', 'def'):
                 self.__state = self.__suiteseen
                 return
+        if ttype == tokenize.NAME and tstring in ('class', 'def'):
+            self.__state = self.__ignorenext
+            return
         if ttype == tokenize.NAME and tstring in opts.keywords:
             self.__state = self.__keywordseen
             return
@@ -448,6 +451,9 @@ def __openseen(self, ttype, tstring, lineno):
                 }, file=sys.stderr)
             self.__state = self.__waiting
 
+    def __ignorenext(self, ttype, tstring, lineno):
+        self.__state = self.__waiting
+
     def __addentry(self, msg, lineno=None, isdocstring=0):
         if lineno is None:
             lineno = self.__lineno
diff --git a/Tools/jit/README.md b/Tools/jit/README.md
index 0f5aa9ce656bc9..42d4fcd48e6b41 100644
--- a/Tools/jit/README.md
+++ b/Tools/jit/README.md
@@ -1,7 +1,9 @@
 The JIT Compiler
 ================
 
-This version of CPython can be built with an experimental just-in-time compiler. While most everything you already know about building and using CPython is unchanged, you will probably need to install a compatible version of LLVM first.
+This version of CPython can be built with an experimental just-in-time compiler[^pep-744]. While most everything you already know about building and using CPython is unchanged, you will probably need to install a compatible version of LLVM first.
+
+Python 3.11 or newer is required to build the JIT.
 
 ## Installing LLVM
 
@@ -21,6 +23,12 @@ chmod +x llvm.sh
 sudo ./llvm.sh 18
 ```
 
+Install LLVM 18 on Fedora Linux 40 or newer:
+
+```sh
+sudo dnf install 'clang(major) = 18' 'llvm(major) = 18'
+```
+
 ### macOS
 
 Install LLVM 18 with [Homebrew](https://brew.sh):
@@ -35,6 +43,12 @@ Homebrew won't add any of the tools to your `$PATH`. That's okay; the build scri
 
 Install LLVM 18 [by searching for it on LLVM's GitHub releases page](https://github.com/llvm/llvm-project/releases?q=18), clicking on "Assets", downloading the appropriate Windows installer for your platform (likely the file ending with `-win64.exe`), and running it. **When installing, be sure to select the option labeled "Add LLVM to the system PATH".**
 
+Alternatively, you can use [chocolatey](https://chocolatey.org):
+
+```sh
+choco install llvm --version=18.1.6
+```
+
 ### Dev Containers
 
 If you are working CPython in a [Codespaces instance](https://devguide.python.org/getting-started/setup-building/#using-codespaces), there's no need to install LLVM as the Fedora 40 base image includes LLVM 18 out of the box.
@@ -47,4 +61,8 @@ For all other builds, pass the new `--enable-experimental-jit` option to `config
 
 Otherwise, just configure and build as you normally would. Cross-compiling "just works", since the JIT is built for the host platform.
 
+The JIT can also be enabled or disabled using the `PYTHON_JIT` environment variable, even on builds where it is enabled or disabled by default. More details about configuring CPython with the JIT and optional values for `--enable-experimental-jit` can be found [here](https://docs.python.org/dev/whatsnew/3.13.html#experimental-jit-compiler).
+
+[^pep-744]: [PEP 744](https://peps.python.org/pep-0744/)
+
 [^why-llvm]: Clang is specifically needed because it's the only C compiler with support for guaranteed tail calls (`musttail`), which are required by CPython's continuation-passing-style approach to JIT compilation. Since LLVM also includes other functionalities we need (namely, object file parsing and disassembly), it's convenient to only support one toolchain at this time.
diff --git a/Tools/jit/_llvm.py b/Tools/jit/_llvm.py
index 45bd69ff861b56..606f280a14d974 100644
--- a/Tools/jit/_llvm.py
+++ b/Tools/jit/_llvm.py
@@ -9,7 +9,7 @@
 import typing
 
 _LLVM_VERSION = 18
-_LLVM_VERSION_PATTERN = re.compile(rf"version\s+{_LLVM_VERSION}\.\d+\.\d+\s+")
+_LLVM_VERSION_PATTERN = re.compile(rf"version\s+{_LLVM_VERSION}\.\d+\.\d+\S*\s+")
 
 _P = typing.ParamSpec("_P")
 _R = typing.TypeVar("_R")
diff --git a/Tools/jit/_targets.py b/Tools/jit/_targets.py
index 023ef498a21d7c..73d10a128756eb 100644
--- a/Tools/jit/_targets.py
+++ b/Tools/jit/_targets.py
@@ -212,13 +212,23 @@ def build(
         ):
             return
         stencil_groups = asyncio.run(self._build_stencils())
-        with jit_stencils.open("w") as file:
-            file.write(digest)
-            if comment:
-                file.write(f"// {comment}\n\n")
-            file.write("")
-            for line in _writer.dump(stencil_groups):
-                file.write(f"{line}\n")
+        jit_stencils_new = out / "jit_stencils.h.new"
+        try:
+            with jit_stencils_new.open("w") as file:
+                file.write(digest)
+                if comment:
+                    file.write(f"// {comment}\n")
+                file.write("\n")
+                for line in _writer.dump(stencil_groups):
+                    file.write(f"{line}\n")
+            try:
+                jit_stencils_new.replace(jit_stencils)
+            except FileNotFoundError:
+                # another process probably already moved the file
+                if not jit_stencils.is_file():
+                    raise
+        finally:
+            jit_stencils_new.unlink(missing_ok=True)
 
 
 class _COFF(
@@ -349,6 +359,7 @@ def _handle_section(
             assert section_type in {
                 "SHT_GROUP",
                 "SHT_LLVM_ADDRSIG",
+                "SHT_NOTE",
                 "SHT_NULL",
                 "SHT_STRTAB",
                 "SHT_SYMTAB",
diff --git a/Tools/jit/ignore-tests-emulated-linux.txt b/Tools/jit/ignore-tests-emulated-linux.txt
index 84e8c0ee8afedb..dbb364673b5c1a 100644
--- a/Tools/jit/ignore-tests-emulated-linux.txt
+++ b/Tools/jit/ignore-tests-emulated-linux.txt
@@ -11,6 +11,10 @@ test.test_external_inspection.TestGetStackTrace.test_self_trace
 test.test_faulthandler.FaultHandlerTests.test_enable_fd
 test.test_faulthandler.FaultHandlerTests.test_enable_file
 test.test_init.ProcessPoolForkFailingInitializerTest.test_initializer
+test.test_logging.ConfigDictTest.test_111615
+test.test_logging.ConfigDictTest.test_config_queue_handler
+test.test_logging.ConfigDictTest.test_multiprocessing_queues
+test.test_logging.ConfigDictTest.test_config_queue_handler_multiprocessing_context
 test.test_os.ForkTests.test_fork_warns_when_non_python_thread_exists
 test.test_os.TimerfdTests.test_timerfd_initval
 test.test_os.TimerfdTests.test_timerfd_interval
@@ -76,4 +80,4 @@ test.test_subprocess.ProcessTestCaseNoPoll.test_cwd_with_relative_executable
 test.test_subprocess.ProcessTestCaseNoPoll.test_empty_env
 test.test_subprocess.ProcessTestCaseNoPoll.test_file_not_found_includes_filename
 test.test_subprocess.ProcessTestCaseNoPoll.test_one_environment_variable
-test.test_venv.BasicTest.test_zippath_from_non_installed_posix
\ No newline at end of file
+test.test_venv.BasicTest.test_zippath_from_non_installed_posix
diff --git a/Tools/msi/buildrelease.bat b/Tools/msi/buildrelease.bat
index 839f6204d9e0b2..77fb4779208853 100644
--- a/Tools/msi/buildrelease.bat
+++ b/Tools/msi/buildrelease.bat
@@ -127,7 +127,7 @@ if "%1" EQU "x86" (
     set OUTDIR_PLAT=amd64
     set OBJDIR_PLAT=x64
 ) else if "%1" EQU "ARM64" (
-    set BUILD=%Py_OutDir%amd64\
+    set BUILD=%Py_OutDir%arm64\
     set PGO=%~2
     set BUILD_PLAT=ARM64
     set OUTDIR_PLAT=arm64
diff --git a/Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp b/Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp
index 7cddda9b06555d..094ddba4f1ad8f 100644
--- a/Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp
+++ b/Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp
@@ -213,6 +213,7 @@ static struct { LPCWSTR regName; LPCWSTR variableName; } OPTIONAL_FEATURES[] = {
     { L"Shortcuts", L"Shortcuts" },
     // Include_launcher and AssociateFiles are handled separately and so do
     // not need to be included in this list.
+    { L"freethreaded", L"Include_freethreaded" },
     { nullptr, nullptr }
 };
 
diff --git a/Tools/msi/freethreaded/freethreaded_files.wxs b/Tools/msi/freethreaded/freethreaded_files.wxs
index adaf63c69d5ade..b3ce28e7aedc84 100644
--- a/Tools/msi/freethreaded/freethreaded_files.wxs
+++ b/Tools/msi/freethreaded/freethreaded_files.wxs
@@ -48,6 +48,12 @@
             <Component Id="freethreaded_python.dll" Directory="InstallDirectory" Guid="*">
                 <File Id="freethreaded_python.dll" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)t.dll" KeyPath="yes" />
             </Component>
+            <Component Id="freethreaded_python_stable.lib" Directory="libs" Guid="*">
+                <File Id="freethreaded_python_stable.lib" Name="python$(var.MajorVersionNumber)t.lib" KeyPath="yes" />
+            </Component>
+            <Component Id="freethreaded_python.lib" Directory="libs" Guid="*">
+                <File Id="freethreaded_python.lib" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)t.lib" KeyPath="yes" />
+            </Component>
         </ComponentGroup>
     </Fragment>
     <Fragment>
@@ -69,8 +75,14 @@
                 <File Id="freethreaded_python_stable_d.dll" Name="python$(var.MajorVersionNumber)t_d.dll" KeyPath="yes" />
             </Component>
             <Component Id="freethreaded_python_d.dll" Directory="InstallDirectory" Guid="*">
-                <File Id="freethreaded_python_d.dll" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)_d.dll" KeyPath="yes" />
-                <File Id="freethreaded_python_d.pdb" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)_d.pdb" KeyPath="no" />
+                <File Id="freethreaded_python_d.dll" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)t_d.dll" KeyPath="yes" />
+                <File Id="freethreaded_python_d.pdb" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)t_d.pdb" KeyPath="no" />
+            </Component>
+            <Component Id="freethreaded_python_stable_d.lib" Directory="libs" Guid="*">
+                <File Id="freethreaded_python_stable_d.lib" Name="python$(var.MajorVersionNumber)t_d.lib" KeyPath="yes" />
+            </Component>
+            <Component Id="freethreaded_python_d.lib" Directory="libs" Guid="*">
+                <File Id="freethreaded_python_d.lib" Name="python$(var.MajorVersionNumber)$(var.MinorVersionNumber)t_d.lib" KeyPath="yes" />
             </Component>
         </ComponentGroup>
     </Fragment>
@@ -91,7 +103,7 @@
         </ComponentGroup>
     </Fragment>
 
-    <?define exts=pyexpat;select;unicodedata;winsound;_bz2;_elementtree;_socket;_ssl;_ctypes;_hashlib;_multiprocessing;_lzma;_decimal;_overlapped;_sqlite3;_asyncio;_queue;_uuid;_wmi;_zoneinfo;_testcapi;_ctypes_test;_testbuffer;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole;_testinternalcapi;_testclinic;_testclinic_limited ?>
+    <?define exts=pyexpat;select;unicodedata;winsound;_bz2;_elementtree;_socket;_ssl;_ctypes;_hashlib;_multiprocessing;_lzma;_decimal;_overlapped;_sqlite3;_asyncio;_queue;_uuid;_wmi;_zoneinfo;_testcapi;_ctypes_test;_testbuffer;_testimportmultiple;_testmultiphase;_testsinglephase;_testconsole;_testinternalcapi;_testclinic;_testclinic_limited;_tkinter ?>
     <Fragment>
         <DirectoryRef Id="Lib_venv_scripts_nt__freethreaded" />
 
@@ -147,17 +159,13 @@
             
             <?endforeach ?>
             
-            <Component Id="venvlauncher_d.exe" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
-                <File Name="python_d.exe" Source="venvlauncher_d.exe" KeyPath="yes" />
-            </Component>
-            <Component Id="venvwlauncher_d.exe" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
-                <File Name="pythonw_d.exe" Source="venvwlauncher_d.exe" KeyPath="yes" />
-            </Component>
-            <Component Id="venvlaunchert_d.pdb" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
-                <File Name="venvlaunchert_d.pdb" KeyPath="yes" />
+            <Component Id="venvlaunchert_d.exe" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
+                <File Name="venvlaunchert_d.exe" KeyPath="yes" />
+                <File Name="venvlaunchert_d.pdb" />
             </Component>
-            <Component Id="venvwlaunchert_d.pdb" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
-                <File Name="venvwlaunchert_d.pdb" KeyPath="yes" />
+            <Component Id="venvwlaunchert_d.exe" Directory="Lib_venv_scripts_nt__freethreaded" Guid="*">
+                <File Name="venvwlaunchert_d.exe" KeyPath="yes" />
+                <File Name="venvwlaunchert_d.pdb" />
             </Component>
         </ComponentGroup>
     </Fragment>
diff --git a/Tools/msi/pip/pip.wxs b/Tools/msi/pip/pip.wxs
index 1d8083cad91a56..627c4710a9fdfa 100644
--- a/Tools/msi/pip/pip.wxs
+++ b/Tools/msi/pip/pip.wxs
@@ -25,8 +25,8 @@
         <?endif ?>
         
         <!-- Install/uninstall pip -->
-        <CustomAction Id="SetUpdatePipCommandLine" Property="UpdatePip" Value='"[PYTHON_EXE]" -E -s -m ensurepip -U --default-pip' Execute="immediate" />
-        <CustomAction Id="SetRemovePipCommandLine" Property="UpdatePip" Value='"[PYTHON_EXE]" -E -s -B -m ensurepip._uninstall' Execute="immediate" />
+        <CustomAction Id="SetUpdatePipCommandLine" Property="UpdatePip" Value='"[PYTHON_EXE]" -I -m ensurepip -U --default-pip' Execute="immediate" />
+        <CustomAction Id="SetRemovePipCommandLine" Property="UpdatePip" Value='"[PYTHON_EXE]" -I -B -m ensurepip._uninstall' Execute="immediate" />
         
         <InstallExecuteSequence>
             <Custom Action="SetUpdatePipCommandLine" Before="UpdatePip">(&amp;DefaultFeature=3) AND NOT (!DefaultFeature=3)</Custom>
diff --git a/Tools/peg_generator/peg_extension/peg_extension.c b/Tools/peg_generator/peg_extension/peg_extension.c
index b081240ffff017..1587d53d59472e 100644
--- a/Tools/peg_generator/peg_extension/peg_extension.c
+++ b/Tools/peg_generator/peg_extension/peg_extension.c
@@ -108,7 +108,7 @@ parse_string(PyObject *self, PyObject *args, PyObject *kwds)
 static PyObject *
 clear_memo_stats(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
 {
-#if defined(PY_DEBUG)
+#if defined(Py_DEBUG)
     _PyPegen_clear_memo_statistics();
 #endif
     Py_RETURN_NONE;
@@ -117,7 +117,7 @@ clear_memo_stats(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
 static PyObject *
 get_memo_stats(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
 {
-#if defined(PY_DEBUG)
+#if defined(Py_DEBUG)
     return _PyPegen_get_memo_statistics();
 #else
     Py_RETURN_NONE;
@@ -128,7 +128,7 @@ get_memo_stats(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
 static PyObject *
 dump_memo_stats(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
 {
-#if defined(PY_DEBUG)
+#if defined(Py_DEBUG)
     PyObject *list = _PyPegen_get_memo_statistics();
     if (list == NULL) {
         return NULL;
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index 1767727373918f..b1d0e0235418fe 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -1,6 +1,6 @@
 # Requirements file for external linters and checks we run on
 # Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==1.10.0
+mypy==1.13
 
 # needed for peg_generator:
 types-psutil==5.9.5.20240423
diff --git a/Tools/requirements-hypothesis.txt b/Tools/requirements-hypothesis.txt
index 9d5a18c881bf36..66898885c0a412 100644
--- a/Tools/requirements-hypothesis.txt
+++ b/Tools/requirements-hypothesis.txt
@@ -1,4 +1,4 @@
 # Requirements file for hypothesis that
 # we use to run our property-based tests in CI.
 
-hypothesis==6.100.2
+hypothesis==6.111.2
diff --git a/Tools/scripts/summarize_stats.py b/Tools/scripts/summarize_stats.py
index ffbc40e6a37f3d..a48a9fba48c5c2 100644
--- a/Tools/scripts/summarize_stats.py
+++ b/Tools/scripts/summarize_stats.py
@@ -477,7 +477,7 @@ def get_optimization_stats(self) -> dict[str, tuple[int, int | None]]:
             ): (trace_too_long, attempts),
             Doc(
                 "Trace too short",
-                "A potential trace is abandoced because it it too short.",
+                "A potential trace is abandoned because it it too short.",
             ): (trace_too_short, attempts),
             Doc(
                 "Inner loop found", "A trace is truncated because it has an inner loop"
diff --git a/Tools/ssl/multissltests.py b/Tools/ssl/multissltests.py
index baa16102068aa0..eae0e0c5e8761f 100755
--- a/Tools/ssl/multissltests.py
+++ b/Tools/ssl/multissltests.py
@@ -43,13 +43,14 @@
 log = logging.getLogger("multissl")
 
 OPENSSL_OLD_VERSIONS = [
+    "1.1.1w",
 ]
 
 OPENSSL_RECENT_VERSIONS = [
-    "1.1.1w",
-    "3.0.13",
-    "3.1.5",
-    "3.2.1",
+    "3.0.15",
+    "3.1.7",
+    "3.2.3",
+    "3.3.2",
 ]
 
 LIBRESSL_OLD_VERSIONS = [
@@ -397,6 +398,7 @@ def run_python_tests(self, tests, network=True):
 class BuildOpenSSL(AbstractBuilder):
     library = "OpenSSL"
     url_templates = (
+        "https://github.com/openssl/openssl/releases/download/openssl-{v}/openssl-{v}.tar.gz",
         "https://www.openssl.org/source/openssl-{v}.tar.gz",
         "https://www.openssl.org/source/old/{s}/openssl-{v}.tar.gz"
     )
@@ -439,6 +441,7 @@ def short_version(self):
             parsed = parsed[:2]
         return ".".join(str(i) for i in parsed)
 
+
 class BuildLibreSSL(AbstractBuilder):
     library = "LibreSSL"
     url_templates = (
diff --git a/Tools/tsan/suppressions_free_threading.txt b/Tools/tsan/suppressions_free_threading.txt
index 74dbf4bb1cb688..6add088daef76e 100644
--- a/Tools/tsan/suppressions_free_threading.txt
+++ b/Tools/tsan/suppressions_free_threading.txt
@@ -11,34 +11,41 @@ race:set_allocator_unlocked
 
 ## Free-threaded suppressions
 
-race:_add_to_weak_set
-race:_in_weak_set
-race:_mi_heap_delayed_free_partial
-race:_PyEval_EvalFrameDefault
-race:_PyImport_AcquireLock
-race:_PyImport_ReleaseLock
-race:_PyInterpreterState_SetNotRunningMain
-race:_PyInterpreterState_IsRunningMain
-race:_PyObject_GC_IS_SHARED
-race:_PyObject_GC_SET_SHARED
-race:_PyObject_GC_TRACK
-# https://gist.github.com/mpage/0a24eb2dd458441ededb498e9b0e5de8
-race:_PyParkingLot_Park
-race:_PyType_HasFeature
-race:assign_version_tag
-race:gc_restore_tid
-race:initialize_new_array
-race:insertdict
-race:lookup_tp_dict
-race:mi_heap_visit_pages
-race:PyMember_GetOne
-race:PyMember_SetOne
-race:new_reference
-race:set_contains_key
-race:set_inheritable
-race:start_the_world
-race:tstate_set_detached
-race:unicode_hash
+
+# These entries are for warnings that trigger in a library function, as called
+# by a CPython function.
+
+# https://gist.github.com/swtaarrs/8e0e365e1d9cecece3269a2fb2f2b8b8
+race:sock_recv_impl
+# https://gist.github.com/swtaarrs/08dfe7883b4c975c31ecb39388987a67
+race:free_threadstate
+
+
+# These warnings trigger directly in a CPython function.
+
+race_top:assign_version_tag
+race_top:new_reference
+race_top:_multiprocessing_SemLock_acquire_impl
+race_top:list_get_item_ref
+race_top:_Py_slot_tp_getattr_hook
+race_top:add_threadstate
+race_top:dump_traceback
+race_top:fatal_error
+race_top:_multiprocessing_SemLock_release_impl
+race_top:_PyFrame_GetCode
+race_top:_PyFrame_Initialize
+race_top:PyInterpreterState_ThreadHead
+race_top:_PyObject_TryGetInstanceAttribute
+race_top:PyThreadState_Next
+race_top:PyUnstable_InterpreterFrame_GetLine
+race_top:sock_close
+race_top:tstate_delete_common
+race_top:tstate_is_freed
+race_top:type_modified_unlocked
+race_top:write_thread_id
+race_top:PyThreadState_Clear
+# Only seen on macOS, sample: https://gist.github.com/aisk/dda53f5d494a4556c35dde1fce03259c
+race_top:set_default_allocator_unlocked
 
 # https://gist.github.com/mpage/6962e8870606cfc960e159b407a0cb40
 thread:pthread_create
diff --git a/Tools/tsan/supressions.txt b/Tools/tsan/supressions.txt
index c778c791eacce8..22ba9d6ba2ab4d 100644
--- a/Tools/tsan/supressions.txt
+++ b/Tools/tsan/supressions.txt
@@ -2,3 +2,6 @@
 # reference: https://github.com/google/sanitizers/wiki/ThreadSanitizerSuppressions
 race:get_allocator_unlocked
 race:set_allocator_unlocked
+
+# https://gist.github.com/mpage/daaf32b39180c1989572957b943eb665
+thread:pthread_create
diff --git a/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index a5ac09eb96f19a..c4ba674ecb134a 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -35,7 +35,7 @@
 from textwrap import dedent
 from typing import Iterator, List, Optional, Set, Tuple
 
-SCRIPT = sys.argv[0]
+SCRIPT = os.path.normpath(sys.argv[0])
 VERSION = "3.3"
 
 # The Unicode Database
diff --git a/Tools/wasm/config.site-wasm32-wasi b/Tools/wasm/config.site-wasm32-wasi
index 4a1a466a4ab3f1..c5d8b3e205db26 100644
--- a/Tools/wasm/config.site-wasm32-wasi
+++ b/Tools/wasm/config.site-wasm32-wasi
@@ -49,3 +49,11 @@ ac_cv_func_preadv=no
 ac_cv_func_readv=no
 ac_cv_func_pwritev=no
 ac_cv_func_writev=no
+
+# WASI SDK 22 added multiple stubs which we don't implement.
+# https://github.com/python/cpython/issues/120371
+ac_cv_func_chmod=no
+ac_cv_func_fchmod=no
+ac_cv_func_fchmodat=no
+ac_cv_func_statvfs=no
+ac_cv_func_fstatvfs=no
diff --git a/Tools/wasm/python.html b/Tools/wasm/python.html
index 17ffa0ea8bfeff..81a035a5c4cd93 100644
--- a/Tools/wasm/python.html
+++ b/Tools/wasm/python.html
@@ -35,11 +35,12 @@
     <script src="https://unpkg.com/xterm@4.18.0/lib/xterm.js" crossorigin integrity="sha384-yYdNmem1ioP5Onm7RpXutin5A8TimLheLNQ6tnMi01/ZpxXdAwIm2t4fJMx1Djs+"/></script>
     <script type="module">
 class WorkerManager {
-    constructor(workerURL, standardIO, readyCallBack) {
+    constructor(workerURL, standardIO, readyCallBack, finishedCallback) {
         this.workerURL = workerURL
         this.worker = null
         this.standardIO = standardIO
         this.readyCallBack = readyCallBack
+        this.finishedCallback = finishedCallback
 
         this.initialiseWorker()
     }
@@ -59,6 +60,15 @@
         })
     }
 
+    reset() {
+        if (this.worker) {
+            this.worker.terminate()
+            this.worker = null
+        }
+        this.standardIO.message('Worker process terminated.')
+        this.initialiseWorker()
+    }
+
     handleStdinData(inputValue) {
         if (this.stdinbuffer && this.stdinbufferInt) {
             let startingIndex = 1
@@ -92,7 +102,8 @@
                 this.handleStdinData(inputValue)
             })
         } else if (type === 'finished') {
-            this.standardIO.stderr(`Exited with status: ${event.data.returnCode}\r\n`)
+            this.standardIO.message(`Exited with status: ${event.data.returnCode}`)
+            this.finishedCallback()
         }
     }
 }
@@ -168,9 +179,14 @@
                     break;
                 case "\x7F": // BACKSPACE
                 case "\x08": // CTRL+H
-                case "\x04": // CTRL+D
                     this.handleCursorErase(true);
                     break;
+                case "\x04": // CTRL+D
+                    // Send empty input
+                    if (this.input === '') {
+                        this.resolveInput('')
+                        this.activeInput = false;
+                    }
             }
         } else {
             this.handleCursorInsert(data);
@@ -265,9 +281,13 @@
     }
 }
 
+const runButton = document.getElementById('run')
 const replButton = document.getElementById('repl')
+const stopButton = document.getElementById('stop')
 const clearButton = document.getElementById('clear')
 
+const codeBox = document.getElementById('codebox')
+
 window.onload = () => {
     const terminal = new WasmTerminal()
     terminal.open(document.getElementById('terminal'))
@@ -277,35 +297,72 @@
         stderr: (charCode) => { terminal.print(charCode) },
         stdin: async () => {
             return await terminal.prompt()
+        },
+        message: (text) => { terminal.writeLine(`\r\n${text}\r\n`) },
+    }
+
+    const programRunning = (isRunning) => {
+        if (isRunning) {
+            replButton.setAttribute('disabled', true)
+            runButton.setAttribute('disabled', true)
+            stopButton.removeAttribute('disabled')
+        } else {
+            replButton.removeAttribute('disabled')
+            runButton.removeAttribute('disabled')
+            stopButton.setAttribute('disabled', true)
         }
     }
 
+    runButton.addEventListener('click', (e) => {
+        terminal.clear()
+        programRunning(true)
+        const code = codeBox.value
+        pythonWorkerManager.run({args: ['main.py'], files: {'main.py': code}})
+    })
+
     replButton.addEventListener('click', (e) => {
+        terminal.clear()
+        programRunning(true)
         // Need to use "-i -" to force interactive mode.
         // Looks like isatty always returns false in emscripten
         pythonWorkerManager.run({args: ['-i', '-'], files: {}})
     })
 
+    stopButton.addEventListener('click', (e) => {
+        programRunning(false)
+        pythonWorkerManager.reset()
+    })
+
     clearButton.addEventListener('click', (e) => {
         terminal.clear()
     })
 
     const readyCallback = () => {
         replButton.removeAttribute('disabled')
+        runButton.removeAttribute('disabled')
         clearButton.removeAttribute('disabled')
     }
 
-    const pythonWorkerManager = new WorkerManager('./python.worker.js', stdio, readyCallback)
+    const finishedCallback = () => {
+        programRunning(false)
+    }
+
+    const pythonWorkerManager = new WorkerManager('./python.worker.js', stdio, readyCallback, finishedCallback)
 }
     </script>
 </head>
 <body>
     <h1>Simple REPL for Python WASM</h1>
-    <div id="terminal"></div>
+<textarea id="codebox" cols="108" rows="16">
+print('Welcome to WASM!')
+</textarea>
     <div class="button-container">
+      <button id="run" disabled>Run</button>
       <button id="repl" disabled>Start REPL</button>
+      <button id="stop" disabled>Stop</button>
       <button id="clear" disabled>Clear</button>
     </div>
+    <div id="terminal"></div>
     <div id="info">
         The simple REPL provides a limited Python experience in the browser.
         <a href="https://github.com/python/cpython/blob/main/Tools/wasm/README.md">
diff --git a/Tools/wasm/python.worker.js b/Tools/wasm/python.worker.js
index 1b794608fffe7b..4ce4e16fc0fa19 100644
--- a/Tools/wasm/python.worker.js
+++ b/Tools/wasm/python.worker.js
@@ -19,18 +19,18 @@ class StdinBuffer {
     }
 
     stdin = () => {
-        if (this.numberOfCharacters + 1 === this.readIndex) {
+        while (this.numberOfCharacters + 1 === this.readIndex) {
             if (!this.sentNull) {
                 // Must return null once to indicate we're done for now.
                 this.sentNull = true
                 return null
             }
             this.sentNull = false
+            // Prompt will reset this.readIndex to 1
             this.prompt()
         }
         const char = this.buffer[this.readIndex]
         this.readIndex += 1
-        // How do I send an EOF??
         return char
     }
 }
@@ -71,7 +71,11 @@ var Module = {
 
 onmessage = (event) => {
     if (event.data.type === 'run') {
-        // TODO: Set up files from event.data.files
+        if (event.data.files) {
+            for (const [filename, contents] of Object.entries(event.data.files)) {
+                Module.FS.writeFile(filename, contents)
+            }
+        }
         const ret = callMain(event.data.args)
         postMessage({
             type: 'finished',
diff --git a/Tools/wasm/wasi.py b/Tools/wasm/wasi.py
index efb005e53ab989..c8f48a26f2a8be 100644
--- a/Tools/wasm/wasi.py
+++ b/Tools/wasm/wasi.py
@@ -20,12 +20,13 @@
 
 CROSS_BUILD_DIR = CHECKOUT / "cross-build"
 BUILD_DIR = CROSS_BUILD_DIR / "build"
-HOST_TRIPLE = "wasm32-wasi"
-HOST_DIR = CROSS_BUILD_DIR / HOST_TRIPLE
 
 LOCAL_SETUP = CHECKOUT / "Modules" / "Setup.local"
 LOCAL_SETUP_MARKER = "# Generated by Tools/wasm/wasi.py\n".encode("utf-8")
 
+WASMTIME_VAR_NAME = "WASMTIME"
+WASMTIME_HOST_RUNNER_VAR = f"{{{WASMTIME_VAR_NAME}}}"
+
 
 def updated_env(updates={}):
     """Create a new dict representing the environment to use.
@@ -60,12 +61,17 @@ def subdir(working_dir, *, clean_ok=False):
     def decorator(func):
         @functools.wraps(func)
         def wrapper(context):
+            nonlocal working_dir
+
+            if callable(working_dir):
+                working_dir = working_dir(context)
             try:
                 tput_output = subprocess.check_output(["tput", "cols"],
                                                       encoding="utf-8")
-                terminal_width = int(tput_output.strip())
             except subprocess.CalledProcessError:
                 terminal_width = 80
+            else:
+                terminal_width = int(tput_output.strip())
             print("⎯" * terminal_width)
             print("📁", working_dir)
             if (clean_ok and getattr(context, "clean", False) and
@@ -190,7 +196,7 @@ def wasi_sdk_env(context):
     return env
 
 
-@subdir(HOST_DIR, clean_ok=True)
+@subdir(lambda context: CROSS_BUILD_DIR / context.host_triple, clean_ok=True)
 def configure_wasi_python(context, working_dir):
     """Configure the WASI/host build."""
     if not context.wasi_sdk_path or not context.wasi_sdk_path.exists():
@@ -215,18 +221,27 @@ def configure_wasi_python(context, working_dir):
 
     # Use PYTHONPATH to include sysconfig data which must be anchored to the
     # WASI guest's `/` directory.
-    host_runner = context.host_runner.format(GUEST_DIR="/",
-                                             HOST_DIR=CHECKOUT,
-                                             ENV_VAR_NAME="PYTHONPATH",
-                                             ENV_VAR_VALUE=f"/{sysconfig_data}",
-                                             PYTHON_WASM=working_dir / "python.wasm")
+    args = {"GUEST_DIR": "/",
+            "HOST_DIR": CHECKOUT,
+            "ENV_VAR_NAME": "PYTHONPATH",
+            "ENV_VAR_VALUE": f"/{sysconfig_data}",
+            "PYTHON_WASM": working_dir / "python.wasm"}
+    # Check dynamically for wasmtime in case it was specified manually via
+    # `--host-runner`.
+    if WASMTIME_HOST_RUNNER_VAR in context.host_runner:
+        if wasmtime := shutil.which("wasmtime"):
+            args[WASMTIME_VAR_NAME] = wasmtime
+        else:
+            raise FileNotFoundError("wasmtime not found; download from "
+                                    "https://github.com/bytecodealliance/wasmtime")
+    host_runner = context.host_runner.format_map(args)
     env_additions = {"CONFIG_SITE": config_site, "HOSTRUNNER": host_runner}
     build_python = os.fsdecode(build_python_path())
     # The path to `configure` MUST be relative, else `python.wasm` is unable
     # to find the stdlib due to Python not recognizing that it's being
     # executed from within a checkout.
     configure = [os.path.relpath(CHECKOUT / 'configure', working_dir),
-                    f"--host={HOST_TRIPLE}",
+                    f"--host={context.host_triple}",
                     f"--build={build_platform()}",
                     f"--with-build-python={build_python}"]
     if pydebug:
@@ -246,7 +261,7 @@ def configure_wasi_python(context, working_dir):
     sys.stdout.flush()
 
 
-@subdir(HOST_DIR)
+@subdir(lambda context: CROSS_BUILD_DIR / context.host_triple)
 def make_wasi_python(context, working_dir):
     """Run `make` for the WASI/host build."""
     call(["make", "--jobs", str(cpu_count()), "all"],
@@ -277,7 +292,7 @@ def clean_contents(context):
 
 
 def main():
-    default_host_runner = (f"{shutil.which('wasmtime')} run "
+    default_host_runner = (f"{WASMTIME_HOST_RUNNER_VAR} run "
                         # Make sure the stack size will work for a pydebug
                         # build.
                         # The 8388608 value comes from `ulimit -s` under Linux
@@ -331,6 +346,9 @@ def main():
                         help="Command template for running the WASI host "
                              "(default designed for wasmtime 14 or newer: "
                                 f"`{default_host_runner}`)")
+    for subcommand in build, configure_host, make_host:
+        subcommand.add_argument("--host-triple", action="store", default="wasm32-wasip1",
+                        help="The target triple for the WASI host build")
 
     context = parser.parse_args()
 
diff --git a/aclocal.m4 b/aclocal.m4
index 832aec19f48f17..b082a5b1bc5e07 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -41,32 +41,81 @@ m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun
 #   If neither value is found, the user is instructed to specify the
 #   ordering.
 #
+#   Early versions of this macro (i.e., before serial 12) would not work
+#   when interprocedural optimization (via link-time optimization) was
+#   enabled. This would happen when, say, the GCC/clang "-flto" flag, or the
+#   ICC "-ipo" flag was used, for example. The problem was that under
+#   these conditions, the compiler did not allocate for and write the special
+#   float value in the data segment of the object file, since doing so might
+#   not prove optimal once more context was available. Thus, the special value
+#   (in platform-dependent binary form) could not be found in the object file,
+#   and the macro would fail.
+#
+#   The solution to the above problem was to:
+#
+#     1) Compile and link a whole test program rather than just compile an
+#        object file. This ensures that we reach the point where even an
+#        interprocedural optimizing compiler writes values to the data segment.
+#
+#     2) Add code that requires the compiler to write the special value to
+#        the data segment, as opposed to "optimizing away" the variable's
+#        allocation. This could be done via compiler keywords or options, but
+#        it's tricky to make this work for all versions of all compilers with
+#        all optimization settings. The chosen solution was to make the exit
+#        code of the test program depend on the storing of the special value
+#        in memory (in the data segment). Because the exit code can be
+#        verified, any compiler that aspires to be correct will produce a
+#        program binary that contains the value, which the macro can then find.
+#
+#   How does the exit code depend on the special value residing in memory?
+#   Memory, unlike variables and registers, can be addressed indirectly at run
+#   time. The exit code of this test program is a result of indirectly reading
+#   and writing to the memory region where the special value is supposed to
+#   reside. The actual memory addresses used and the values to be written are
+#   derived from the the program input ("argv") and are therefore not known at
+#   compile or link time. The compiler has no choice but to defer the
+#   computation to run time, and to prepare by allocating and populating the
+#   data segment with the special value. For further details, refer to the
+#   source code of the test program.
+#
+#   Note that the test program is never meant to be run. It only exists to host
+#   a double float value in a given platform's binary format. Thus, error
+#   handling is not included.
+#
 # LICENSE
 #
-#   Copyright (c) 2008 Daniel Amelang <dan@amelang.net>
+#   Copyright (c) 2008, 2023 Daniel Amelang <dan@amelang.net>
 #
 #   Copying and distribution of this file, with or without modification, are
 #   permitted in any medium without royalty provided the copyright notice
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 11
+#serial 12
 
 AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN],
   [AC_CACHE_CHECK(whether float word ordering is bigendian,
                   ax_cv_c_float_words_bigendian, [
 
 ax_cv_c_float_words_bigendian=unknown
-AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+
+#include <stdlib.h>
+
+static double m[] = {9.090423496703681e+223, 0.0};
 
-double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
+int main (int argc, char *argv[])
+{
+    m[atoi (argv[1])] += atof (argv[2]);
+    return m[atoi (argv[3])] > 0.0;
+}
 
 ]])], [
 
-if grep noonsees conftest.$ac_objext >/dev/null ; then
+if grep noonsees conftest$EXEEXT >/dev/null ; then
   ax_cv_c_float_words_bigendian=yes
 fi
-if grep seesnoon conftest.$ac_objext >/dev/null ; then
+if grep seesnoon conftest$EXEEXT >/dev/null ; then
   if test "$ax_cv_c_float_words_bigendian" = unknown; then
     ax_cv_c_float_words_bigendian=no
   else
diff --git a/configure b/configure
index de426e6b686e68..1cd1f690f7b9c1 100755
--- a/configure
+++ b/configure
@@ -840,7 +840,7 @@ LIBPL
 PY_ENABLE_SHARED
 PLATLIBDIR
 BINLIBDEST
-MODULE_LDFLAGS
+LIBPYTHON
 MODULE_DEPS_SHARED
 EXT_SUFFIX
 ALT_SOABI
@@ -912,6 +912,7 @@ CFLAGS_ALIASING
 OPT
 BOLT_APPLY_FLAGS
 BOLT_INSTRUMENT_FLAGS
+BOLT_COMMON_FLAGS
 BOLT_BINARIES
 MERGE_FDATA
 LLVM_BOLT
@@ -930,6 +931,7 @@ DEF_MAKE_RULE
 DEF_MAKE_ALL_RULE
 JIT_STENCILS_H
 REGEN_JIT_COMMAND
+ABI_THREAD
 ABIFLAGS
 LN
 MKDIR_P
@@ -981,6 +983,7 @@ IPHONEOS_DEPLOYMENT_TARGET
 EXPORT_MACOSX_DEPLOYMENT_TARGET
 CONFIGURE_MACOSX_DEPLOYMENT_TARGET
 _PYTHON_HOST_PLATFORM
+APP_STORE_COMPLIANCE_PATCH
 INSTALLTARGETS
 FRAMEWORKINSTALLAPPSPREFIX
 FRAMEWORKUNIXTOOLSPREFIX
@@ -1076,6 +1079,7 @@ enable_universalsdk
 with_universal_archs
 with_framework_name
 enable_framework
+with_app_store_compliance
 with_emscripten_target
 enable_wasm_dynamic_linking
 enable_wasm_pthreads
@@ -1143,6 +1147,7 @@ CPPFLAGS
 CPP
 HOSTRUNNER
 PROFILE_TASK
+BOLT_COMMON_FLAGS
 BOLT_INSTRUMENT_FLAGS
 BOLT_APPLY_FLAGS
 LIBUUID_CFLAGS
@@ -1855,6 +1860,10 @@ Optional Packages:
                           specify the name for the python framework on macOS
                           only valid when --enable-framework is set. see
                           Mac/README.rst (default is 'Python')
+  --with-app-store-compliance=[PATCH-FILE]
+                          Enable any patches required for compiliance with app
+                          stores. Optional PATCH-FILE specifies the custom
+                          patch to apply.
   --with-emscripten-target=[browser|node]
                           Emscripten platform
   --with-suffix=SUFFIX    set executable suffix to SUFFIX (default is empty,
@@ -1962,6 +1971,8 @@ Some influential environment variables:
   HOSTRUNNER  Program to run CPython for the host platform
   PROFILE_TASK
               Python args for PGO generation task
+  BOLT_COMMON_FLAGS
+              Common arguments to llvm-bolt when instrumenting and applying
   BOLT_INSTRUMENT_FLAGS
               Arguments to llvm-bolt when instrumenting binaries
   BOLT_APPLY_FLAGS
@@ -3701,7 +3712,7 @@ fi
     fi
         ac_cv_prog_PYTHON_FOR_REGEN=$with_build_python
     PYTHON_FOR_FREEZE="$with_build_python"
-    PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) '$with_build_python
+    PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) _PYTHON_SYSCONFIGDATA_PATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`) '$with_build_python
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_build_python" >&5
 printf "%s\n" "$with_build_python" >&6; }
 
@@ -4053,7 +4064,7 @@ then
 	*-*-emscripten)
 	    ac_sys_system=Emscripten
 	    ;;
-	*-*-wasi)
+	*-*-wasi*)
 	    ac_sys_system=WASI
 	    ;;
 	*)
@@ -4101,7 +4112,7 @@ printf "%s\n" "\"$MACHDEP\"" >&6; }
 # On cross-compile builds, configure will look for a host-specific compiler by
 # prepending the user-provided host triple to the required binary name.
 #
-# On iOS, this results in binaries like "arm64-apple-ios12.0-simulator-gcc",
+# On iOS, this results in binaries like "arm64-apple-ios13.0-simulator-gcc",
 # which isn't a binary that exists, and isn't very convenient, as it contains the
 # iOS version. As the default cross-compiler name won't exist, configure falls
 # back to gcc, which *definitely* won't work. We're providing wrapper scripts for
@@ -4137,9 +4148,9 @@ if test -z "$CPP"; then
 fi
 if test -z "$CXX"; then
 	case "$host" in
-		aarch64-apple-ios*-simulator) CXX=arm64-apple-ios-simulator-clang ;;
-		aarch64-apple-ios*)           CXX=arm64-apple-ios-clang ;;
-		x86_64-apple-ios*-simulator)  CXX=x86_64-apple-ios-simulator-clang ;;
+		aarch64-apple-ios*-simulator) CXX=arm64-apple-ios-simulator-clang++ ;;
+		aarch64-apple-ios*)           CXX=arm64-apple-ios-clang++ ;;
+		x86_64-apple-ios*-simulator)  CXX=x86_64-apple-ios-simulator-clang++ ;;
 		*)
 	esac
 fi
@@ -4430,6 +4441,53 @@ fi
 printf "%s\n" "#define _PYTHONFRAMEWORK \"${PYTHONFRAMEWORK}\"" >>confdefs.h
 
 
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-app-store-compliance" >&5
+printf %s "checking for --with-app-store-compliance... " >&6; }
+
+# Check whether --with-app_store_compliance was given.
+if test ${with_app_store_compliance+y}
+then :
+  withval=$with_app_store_compliance;
+    case "$withval" in
+    yes)
+      case $ac_sys_system in
+        Darwin|iOS)
+          # iOS is able to share the macOS patch
+          APP_STORE_COMPLIANCE_PATCH="Mac/Resources/app-store-compliance.patch"
+          ;;
+        *) as_fn_error $? "no default app store compliance patch available for $ac_sys_system" "$LINENO" 5 ;;
+      esac
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: applying default app store compliance patch" >&5
+printf "%s\n" "applying default app store compliance patch" >&6; }
+      ;;
+    *)
+      APP_STORE_COMPLIANCE_PATCH="${withval}"
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: applying custom app store compliance patch" >&5
+printf "%s\n" "applying custom app store compliance patch" >&6; }
+      ;;
+    esac
+
+else $as_nop
+
+    case $ac_sys_system in
+      iOS)
+        # Always apply the compliance patch on iOS; we can use the macOS patch
+        APP_STORE_COMPLIANCE_PATCH="Mac/Resources/app-store-compliance.patch"
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: applying default app store compliance patch" >&5
+printf "%s\n" "applying default app store compliance patch" >&6; }
+        ;;
+      *)
+        # No default app compliance patching on any other platform
+        APP_STORE_COMPLIANCE_PATCH=
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not patching for app store compliance" >&5
+printf "%s\n" "not patching for app store compliance" >&6; }
+        ;;
+    esac
+
+fi
+
+
+
 
 if test "$cross_compiling" = yes; then
 	case "$host" in
@@ -4451,8 +4509,12 @@ if test "$cross_compiling" = yes; then
 		_host_device=${_host_device:=os}
 
 		# IPHONEOS_DEPLOYMENT_TARGET is the minimum supported iOS version
-		IPHONEOS_DEPLOYMENT_TARGET=${_host_os:3}
-		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=12.0}
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking iOS deployment target" >&5
+printf %s "checking iOS deployment target... " >&6; }
+		IPHONEOS_DEPLOYMENT_TARGET=$(echo ${_host_os} | cut -c4-)
+		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=13.0}
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $IPHONEOS_DEPLOYMENT_TARGET" >&5
+printf "%s\n" "$IPHONEOS_DEPLOYMENT_TARGET" >&6; }
 
 		case "$host_cpu" in
 			aarch64)
@@ -7000,7 +7062,7 @@ case $host/$ac_cv_cc_name in #(
     PY_SUPPORT_TIER=2 ;; #(
   powerpc64le-*-linux-gnu/gcc) :
     PY_SUPPORT_TIER=2 ;; #(
-    wasm32-unknown-wasi/clang) :
+    wasm32-unknown-wasip1/clang) :
     PY_SUPPORT_TIER=2 ;; #(
     x86_64-*-linux-gnu/clang) :
     PY_SUPPORT_TIER=2 ;; #(
@@ -7265,6 +7327,9 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $EXEEXT" >&5
 printf "%s\n" "$EXEEXT" >&6; }
 
+# Make sure we keep EXEEXT and ac_exeext sync'ed.
+ac_exeext=$EXEEXT
+
 # Test whether we're running on a non-case-sensitive system, in which
 # case we give a warning if no ext is given
 
@@ -7758,7 +7823,7 @@ then :
 fi
      ;; #(
               WASI/*) :
-    HOSTRUNNER='wasmtime run --wasm max-wasm-stack=8388608 --wasi preview2 --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/' ;; #(
+    HOSTRUNNER='wasmtime run --wasm max-wasm-stack=8388608 --wasi preview2=n --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/' ;; #(
   *) :
     HOSTRUNNER=''
    ;;
@@ -8089,7 +8154,9 @@ fi
 
 # For calculating the .so ABI tag.
 
+
 ABIFLAGS=""
+ABI_THREAD=""
 
 # Check for --disable-gil
 # --disable-gil
@@ -8119,6 +8186,7 @@ printf "%s\n" "#define Py_GIL_DISABLED 1" >>confdefs.h
 
   # Add "t" for "threaded"
   ABIFLAGS="${ABIFLAGS}t"
+  ABI_THREAD="t"
 fi
 
 # Check for --with-pydebug
@@ -8171,6 +8239,10 @@ printf "%s\n" "#define Py_TRACE_REFS 1" >>confdefs.h
 
 fi
 
+if test "$disable_gil" = "yes" -a "$with_trace_refs" = "yes";
+then
+  as_fn_error $? "--disable-gil cannot be used with --with-trace-refs" "$LINENO" 5
+fi
 
 # Check for --enable-pystats
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-pystats" >&5
@@ -9258,11 +9330,21 @@ then :
 fi
 
 
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking BOLT_COMMON_FLAGS" >&5
+printf %s "checking BOLT_COMMON_FLAGS... " >&6; }
+if test -z "${BOLT_COMMON_FLAGS}"
+then
+  BOLT_COMMON_FLAGS=" -update-debug-sections -skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1 "
+
+fi
+
+
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking BOLT_INSTRUMENT_FLAGS" >&5
 printf %s "checking BOLT_INSTRUMENT_FLAGS... " >&6; }
 if test -z "${BOLT_INSTRUMENT_FLAGS}"
 then
-  BOLT_INSTRUMENT_FLAGS=
+  BOLT_INSTRUMENT_FLAGS="${BOLT_COMMON_FLAGS}"
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BOLT_INSTRUMENT_FLAGS" >&5
 printf "%s\n" "$BOLT_INSTRUMENT_FLAGS" >&6; }
@@ -9272,7 +9354,7 @@ printf "%s\n" "$BOLT_INSTRUMENT_FLAGS" >&6; }
 printf %s "checking BOLT_APPLY_FLAGS... " >&6; }
 if test -z "${BOLT_APPLY_FLAGS}"
 then
-  BOLT_APPLY_FLAGS=" -update-debug-sections -reorder-blocks=ext-tsp -reorder-functions=hfsort+ -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot "
+  BOLT_APPLY_FLAGS=" ${BOLT_COMMON_FLAGS} -reorder-blocks=ext-tsp -reorder-functions=cdsort -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot "
 
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BOLT_APPLY_FLAGS" >&5
@@ -9614,7 +9696,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wextra -Werror"
+    as_fn_append CFLAGS " -Wextra -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9732,7 +9814,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wunused-result -Werror"
+    as_fn_append CFLAGS " -Wunused-result -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9777,7 +9859,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wunused-parameter -Werror"
+    as_fn_append CFLAGS " -Wunused-parameter -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9818,7 +9900,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wint-conversion -Werror"
+    as_fn_append CFLAGS " -Wint-conversion -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9859,7 +9941,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wmissing-field-initializers -Werror"
+    as_fn_append CFLAGS " -Wmissing-field-initializers -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9900,7 +9982,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wsign-compare -Werror"
+    as_fn_append CFLAGS " -Wsign-compare -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9941,7 +10023,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wunreachable-code -Werror"
+    as_fn_append CFLAGS " -Wunreachable-code -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9993,7 +10075,7 @@ then :
 else $as_nop
 
     py_cflags=$CFLAGS
-    as_fn_append CFLAGS "-Wstrict-prototypes -Werror"
+    as_fn_append CFLAGS " -Wstrict-prototypes -Werror"
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10912,6 +10994,12 @@ if test "x$ac_cv_header_sys_param_h" = xyes
 then :
   printf "%s\n" "#define HAVE_SYS_PARAM_H 1" >>confdefs.h
 
+fi
+ac_fn_c_check_header_compile "$LINENO" "sys/pidfd.h" "ac_cv_header_sys_pidfd_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_pidfd_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_PIDFD_H 1" >>confdefs.h
+
 fi
 ac_fn_c_check_header_compile "$LINENO" "sys/poll.h" "ac_cv_header_sys_poll_h" "$ac_includes_default"
 if test "x$ac_cv_header_sys_poll_h" = xyes
@@ -12892,7 +12980,7 @@ then
 		LDCXXSHARED='$(CXX) -dynamiclib -F . -framework $(PYTHONFRAMEWORK)'
 		BLDSHARED="$LDSHARED"
 		;;
-	Emscripten|WASI)
+	Emscripten*|WASI*)
 		LDSHARED='$(CC) -shared'
 		LDCXXSHARED='$(CXX) -shared';;
 	Linux*|GNU*|QNX*|VxWorks*|Haiku*)
@@ -13393,7 +13481,7 @@ save_LIBS=$LIBS
 
 
         CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS"
-        LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
+        LIBS="$LIBS $LIBUUID_LIBS"
                for ac_header in uuid/uuid.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
@@ -13519,7 +13607,7 @@ save_LIBS=$LIBS
 
 
         CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS"
-        LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
+        LIBS="$LIBS $LIBUUID_LIBS"
                for ac_header in uuid/uuid.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "uuid/uuid.h" "ac_cv_header_uuid_uuid_h" "$ac_includes_default"
@@ -14289,7 +14377,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBFFI_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBFFI_LIBS"
+      LIBS="$LIBS $LIBFFI_LIBS"
       ac_fn_c_check_header_compile "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
 if test "x$ac_cv_header_ffi_h" = xyes
 then :
@@ -14362,7 +14450,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBFFI_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBFFI_LIBS"
+      LIBS="$LIBS $LIBFFI_LIBS"
       ac_fn_c_check_header_compile "$LINENO" "ffi.h" "ac_cv_header_ffi_h" "$ac_includes_default"
 if test "x$ac_cv_header_ffi_h" = xyes
 then :
@@ -14473,8 +14561,8 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-    CFLAGS="$LIBFFI_CFLAGS $CFLAGS"
-    LDFLAGS="$LIBFFI_LIBS $LDFLAGS"
+    CFLAGS="$CFLAGS $LIBFFI_CFLAGS"
+    LIBS="$LIBS $LIBFFI_LIBS"
 
 
 
@@ -14618,6 +14706,8 @@ fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_system_libmpdec" >&5
 printf "%s\n" "$with_system_libmpdec" >&6; }
 
+
+
 if test "x$with_system_libmpdec" = xyes
 then :
 
@@ -14697,8 +14787,10 @@ printf "%s\n" "yes" >&6; }
 fi
 else $as_nop
   LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
-   LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
-   LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
+          LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
+          LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
+          have_mpdec=yes
+          with_system_libmpdec=no
 fi
 
 if test "x$with_system_libmpdec" = xyes
@@ -14709,8 +14801,8 @@ save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-    CPPFLAGS="$LIBMPDEC_CFLAGS $CPPFLAGS"
-    LIBS="$LIBMPDEC_LIBS $LIBS"
+    CPPFLAGS="$CPPFLAGS $LIBMPDEC_CFLAGS"
+    LIBS="$LIBS $LIBMPDEC_LIBS"
 
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14745,15 +14837,19 @@ LIBS=$save_LIBS
 
 
 else $as_nop
-  have_mpdec=yes
-   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: the bundled copy of libmpdecimal is scheduled for removal in Python 3.15; consider using a system installed mpdecimal library." >&5
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: the bundled copy of libmpdecimal is scheduled for removal in Python 3.15; consider using a system installed mpdecimal library." >&5
 printf "%s\n" "$as_me: WARNING: the bundled copy of libmpdecimal is scheduled for removal in Python 3.15; consider using a system installed mpdecimal library." >&2;}
 fi
 
 if test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"
 then :
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: no system libmpdecimal found; unable to build _decimal" >&5
-printf "%s\n" "$as_me: WARNING: no system libmpdecimal found; unable to build _decimal" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)" >&5
+printf "%s\n" "$as_me: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)" >&2;}
+       LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
+          LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
+          LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
+          have_mpdec=yes
+          with_system_libmpdec=no
 fi
 
 # Disable forced inlining in debug builds, see GH-94847
@@ -14973,7 +15069,7 @@ save_LIBS=$LIBS
 
 
   CPPFLAGS="$CPPFLAGS $LIBSQLITE3_CFLAGS"
-  LDFLAGS="$LIBSQLITE3_LIBS $LDFLAGS"
+  LIBS="$LIBS $LIBSQLITE3_LIBS"
 
   ac_fn_c_check_header_compile "$LINENO" "sqlite3.h" "ac_cv_header_sqlite3_h" "$ac_includes_default"
 if test "x$ac_cv_header_sqlite3_h" = xyes
@@ -15853,7 +15949,7 @@ save_LIBS=$LIBS
 
 
   CPPFLAGS="$CPPFLAGS $TCLTK_CFLAGS"
-  LIBS="$TCLTK_LIBS $LDFLAGS"
+  LIBS="$LIBS $TCLTK_LIBS"
 
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -15919,7 +16015,7 @@ save_LIBS=$LIBS
 
 
   CPPFLAGS="$CPPFLAGS $GDBM_CFLAGS"
-  LDFLAGS="$GDBM_LIBS $LDFLAGS"
+  LIBS="$LIBS $GDBM_LIBS"
          for ac_header in gdbm.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "gdbm.h" "ac_cv_header_gdbm_h" "$ac_includes_default"
@@ -18847,10 +18943,10 @@ then :
   printf "%s\n" "#define HAVE_TRUNCATE 1" >>confdefs.h
 
 fi
-ac_fn_c_check_func "$LINENO" "ttyname" "ac_cv_func_ttyname"
-if test "x$ac_cv_func_ttyname" = xyes
+ac_fn_c_check_func "$LINENO" "ttyname_r" "ac_cv_func_ttyname_r"
+if test "x$ac_cv_func_ttyname_r" = xyes
 then :
-  printf "%s\n" "#define HAVE_TTYNAME 1" >>confdefs.h
+  printf "%s\n" "#define HAVE_TTYNAME_R 1" >>confdefs.h
 
 fi
 ac_fn_c_check_func "$LINENO" "umask" "ac_cv_func_umask"
@@ -20196,7 +20292,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
-    LDFLAGS="$LDFLAGS $ZLIB_LIBS"
+    LIBS="$LIBS $ZLIB_LIBS"
            for ac_header in zlib.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
@@ -20325,7 +20421,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
-    LDFLAGS="$LDFLAGS $ZLIB_LIBS"
+    LIBS="$LIBS $ZLIB_LIBS"
            for ac_header in zlib.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
@@ -20544,7 +20640,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS"
-    LDFLAGS="$LDFLAGS $BZIP2_LIBS"
+    LIBS="$LIBS $BZIP2_LIBS"
            for ac_header in bzlib.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
@@ -20626,7 +20722,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS"
-    LDFLAGS="$LDFLAGS $BZIP2_LIBS"
+    LIBS="$LIBS $BZIP2_LIBS"
            for ac_header in bzlib.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "bzlib.h" "ac_cv_header_bzlib_h" "$ac_includes_default"
@@ -20772,7 +20868,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS"
-    LDFLAGS="$LDFLAGS $LIBLZMA_LIBS"
+    LIBS="$LIBS $LIBLZMA_LIBS"
            for ac_header in lzma.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
@@ -20854,7 +20950,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS"
-    LDFLAGS="$LDFLAGS $LIBLZMA_LIBS"
+    LIBS="$LIBS $LIBLZMA_LIBS"
            for ac_header in lzma.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "lzma.h" "ac_cv_header_lzma_h" "$ac_includes_default"
@@ -23627,18 +23723,26 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 
-double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
+#include <stdlib.h>
+
+static double m[] = {9.090423496703681e+223, 0.0};
+
+int main (int argc, char *argv[])
+{
+    m[atoi (argv[1])] += atof (argv[2]);
+    return m[atoi (argv[3])] > 0.0;
+}
 
 
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"
+if ac_fn_c_try_link "$LINENO"
 then :
 
 
-if grep noonsees conftest.$ac_objext >/dev/null ; then
+if grep noonsees conftest$EXEEXT >/dev/null ; then
   ax_cv_c_float_words_bigendian=yes
 fi
-if grep seesnoon conftest.$ac_objext >/dev/null ; then
+if grep seesnoon conftest$EXEEXT >/dev/null ; then
   if test "$ax_cv_c_float_words_bigendian" = unknown; then
     ax_cv_c_float_words_bigendian=no
   else
@@ -23648,7 +23752,8 @@ fi
 
 
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ax_cv_c_float_words_bigendian" >&5
 printf "%s\n" "$ax_cv_c_float_words_bigendian" >&6; }
@@ -23656,41 +23761,34 @@ printf "%s\n" "$ax_cv_c_float_words_bigendian" >&6; }
 case $ax_cv_c_float_words_bigendian in
   yes)
 
-printf "%s\n" "#define FLOAT_WORDS_BIGENDIAN 1" >>confdefs.h
+printf "%s\n" "#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1" >>confdefs.h
  ;;
   no)
-     ;;
-  *)
-    as_fn_error $? "
-
-Unknown float word ordering. You need to manually preset
-ax_cv_c_float_words_bigendian=no (or yes) according to your system.
-
-    " "$LINENO" 5 ;;
-esac
-
-
-if test "$ax_cv_c_float_words_bigendian" = "yes"
-then
 
-printf "%s\n" "#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1" >>confdefs.h
+printf "%s\n" "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
+ ;;
+  *)
+    case $host_cpu in #(
+  *arm*) :
+    # Some ARM platforms use a mixed-endian representation for
+                     # doubles. While Python doesn't currently have full support
+                     # for these platforms (see e.g., issue 1762561), we can at
+                     # least make sure that float <-> string conversions work.
+                     # FLOAT_WORDS_BIGENDIAN doesn't actually detect this case,
+                     # but if it's not big or little, then it must be this?
 
-elif test "$ax_cv_c_float_words_bigendian" = "no"
-then
+printf "%s\n" "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
+ ;; #(
+  wasm*) :
 
 printf "%s\n" "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
+ ;; #(
+  *) :
+     ;;
+esac ;;
+esac
 
-else
-  # Some ARM platforms use a mixed-endian representation for doubles.
-  # While Python doesn't currently have full support for these platforms
-  # (see e.g., issue 1762561), we can at least make sure that float <-> string
-  # conversions work.
-  # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big
-  # or little, then it must be this?
-
-printf "%s\n" "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
 
-fi
 
 # The short float repr introduced in Python 3.1 requires the
 # correctly-rounded string <-> double conversion functions from
@@ -24509,16 +24607,19 @@ LDVERSION='$(VERSION)$(ABIFLAGS)'
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LDVERSION" >&5
 printf "%s\n" "$LDVERSION" >&6; }
 
-# Configure the flags and dependencies used when compiling shared modules
+# Configure the flags and dependencies used when compiling shared modules.
+# Do not rename LIBPYTHON - it's accessed via sysconfig by package build
+# systems (e.g. Meson) to decide whether to link extension modules against
+# libpython.
 
 
 MODULE_DEPS_SHARED='$(MODULE_DEPS_STATIC) $(EXPORTSYMS)'
-MODULE_LDFLAGS=''
+LIBPYTHON=''
 
 # On Android and Cygwin the shared libraries must be linked with libpython.
 if test "$PY_ENABLE_SHARED" = "1" && ( test -n "$ANDROID_API_LEVEL" || test "$MACHDEP" = "cygwin"); then
   MODULE_DEPS_SHARED="$MODULE_DEPS_SHARED \$(LDLIBRARY)"
-  MODULE_LDFLAGS="\$(BLDLIBRARY)"
+  LIBPYTHON="\$(BLDLIBRARY)"
 fi
 
 # On iOS the shared libraries must be linked with the Python framework
@@ -24528,11 +24629,11 @@ fi
 
 
 
-BINLIBDEST='$(LIBDIR)/python$(VERSION)'
+BINLIBDEST='$(LIBDIR)/python$(VERSION)$(ABI_THREAD)'
 
 
 # Check for --with-platlibdir
-# /usr/$LIDIRNAME/python$VERSION
+# /usr/$PLATLIBDIR/python$(VERSION)$(ABI_THREAD)
 
 PLATLIBDIR="lib"
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-platlibdir" >&5
@@ -24551,7 +24652,7 @@ then
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
   PLATLIBDIR="$withval"
-  BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)'
+  BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)$(ABI_THREAD)'
 else
   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
@@ -24565,9 +24666,9 @@ fi
 
 
 if test x$PLATFORM_TRIPLET = x; then
-  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}"
+  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}${ABI_THREAD}/config-${LDVERSION}"
 else
-  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
+  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}${ABI_THREAD}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
 fi
 
 
@@ -24775,7 +24876,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBREADLINE_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBREADLINE_LIBS"
+      LIBS="$LIBS $LIBREADLINE_LIBS"
              for ac_header in readline/readline.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
@@ -24854,7 +24955,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBREADLINE_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBREADLINE_LIBS"
+      LIBS="$LIBS $LIBREADLINE_LIBS"
              for ac_header in readline/readline.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "readline/readline.h" "ac_cv_header_readline_readline_h" "$ac_includes_default"
@@ -25006,7 +25107,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBEDIT_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBEDIT_LIBS"
+      LIBS="$LIBS $LIBEDIT_LIBS"
              for ac_header in editline/readline.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
@@ -25087,7 +25188,7 @@ save_LIBS=$LIBS
 
 
       CPPFLAGS="$CPPFLAGS $LIBEDIT_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBEDIT_LIBS"
+      LIBS="$LIBS $LIBEDIT_LIBS"
              for ac_header in editline/readline.h
 do :
   ac_fn_c_check_header_compile "$LINENO" "editline/readline.h" "ac_cv_header_editline_readline_h" "$ac_includes_default"
@@ -25195,7 +25296,7 @@ save_LIBS=$LIBS
 
 
     CPPFLAGS="$CPPFLAGS $READLINE_CFLAGS"
-    LIBS="$READLINE_LIBS $LIBS"
+    LIBS="$LIBS $READLINE_LIBS"
     LIBS_SAVE=$LIBS
 
 
@@ -25860,24 +25961,10 @@ have_curses=no
 have_panel=no
 
 
-ac_fn_c_check_header_compile "$LINENO" "curses.h" "ac_cv_header_curses_h" "$ac_includes_default"
-if test "x$ac_cv_header_curses_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_CURSES_H 1" >>confdefs.h
-
-fi
-ac_fn_c_check_header_compile "$LINENO" "ncurses.h" "ac_cv_header_ncurses_h" "$ac_includes_default"
-if test "x$ac_cv_header_ncurses_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_NCURSES_H 1" >>confdefs.h
-
-fi
 
+# Check for ncursesw/panelw first. If that fails, try ncurses/panel.
 
-if test "x$ac_cv_header_ncurses_h" = xyes
-then :
 
-  if test "$ac_sys_system" != "Darwin"; then
 
 pkg_failed=no
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ncursesw" >&5
@@ -25937,148 +26024,102 @@ fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$CURSES_PKG_ERRORS" >&5
 
-
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
-printf %s "checking for initscr in -lncursesw... " >&6; }
-if test ${ac_cv_lib_ncursesw_initscr+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lncursesw  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char initscr ();
-int
-main (void)
-{
-return initscr ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_ncursesw_initscr=yes
-else $as_nop
-  ac_cv_lib_ncursesw_initscr=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
-printf "%s\n" "$ac_cv_lib_ncursesw_initscr" >&6; }
-if test "x$ac_cv_lib_ncursesw_initscr" = xyes
-then :
-
-          printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
-
-          have_curses=ncursesw
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncursesw"}
-
-fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
+	have_curses=no
 elif test $pkg_failed = untried; then
         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
 printf "%s\n" "no" >&6; }
+	have_curses=no
+else
+	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
+	CURSES_LIBS=$pkg_cv_CURSES_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
+printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
 
+   have_curses=yes
 
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncursesw" >&5
-printf %s "checking for initscr in -lncursesw... " >&6; }
-if test ${ac_cv_lib_ncursesw_initscr+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lncursesw  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+pkg_failed=no
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panelw" >&5
+printf %s "checking for panelw... " >&6; }
 
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char initscr ();
-int
-main (void)
-{
-return initscr ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_ncursesw_initscr=yes
-else $as_nop
-  ac_cv_lib_ncursesw_initscr=no
+if test -n "$PANEL_CFLAGS"; then
+    pkg_cv_PANEL_CFLAGS="$PANEL_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panelw" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+ else
+    pkg_failed=untried
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncursesw_initscr" >&5
-printf "%s\n" "$ac_cv_lib_ncursesw_initscr" >&6; }
-if test "x$ac_cv_lib_ncursesw_initscr" = xyes
-then :
-
-          printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
-
-          have_curses=ncursesw
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncursesw"}
-
+if test -n "$PANEL_LIBS"; then
+    pkg_cv_PANEL_LIBS="$PANEL_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+    if test -n "$PKG_CONFIG" && \
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+  pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panelw" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes
+else
+  pkg_failed=yes
+fi
+ else
+    pkg_failed=untried
 fi
 
 
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
 
+if test $pkg_failed = yes; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi
+        if test $_pkg_short_errors_supported = yes; then
+	        PANEL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "panelw" 2>&1`
+        else
+	        PANEL_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "panelw" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$PANEL_PKG_ERRORS" >&5
 
+	have_panel=no
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	have_panel=no
 else
-	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
-	CURSES_LIBS=$pkg_cv_CURSES_LIBS
+	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
+	PANEL_LIBS=$pkg_cv_PANEL_LIBS
         { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 printf "%s\n" "yes" >&6; }
 
-      printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
-
-      have_curses=ncursesw
+printf "%s\n" "#define HAVE_PANELW 1" >>confdefs.h
 
+     have_panel=yes
+fi
 fi
-  fi
 
-  if test "x$have_curses" = xno
+
+if test "x$have_curses" = xno
 then :
 
 
+
 pkg_failed=no
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ncurses" >&5
 printf %s "checking for ncurses... " >&6; }
@@ -26137,197 +26178,35 @@ fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$CURSES_PKG_ERRORS" >&5
 
+	have_curses=no
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	have_curses=no
+else
+	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
+	CURSES_LIBS=$pkg_cv_CURSES_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
-printf %s "checking for initscr in -lncurses... " >&6; }
-if test ${ac_cv_lib_ncurses_initscr+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lncurses  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char initscr ();
-int
-main (void)
-{
-return initscr ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_ncurses_initscr=yes
-else $as_nop
-  ac_cv_lib_ncurses_initscr=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
-printf "%s\n" "$ac_cv_lib_ncurses_initscr" >&6; }
-if test "x$ac_cv_lib_ncurses_initscr" = xyes
-then :
-
-          have_curses=ncurses
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncurses"}
-
-fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-elif test $pkg_failed = untried; then
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for initscr in -lncurses" >&5
-printf %s "checking for initscr in -lncurses... " >&6; }
-if test ${ac_cv_lib_ncurses_initscr+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lncurses  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char initscr ();
-int
-main (void)
-{
-return initscr ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_ncurses_initscr=yes
-else $as_nop
-  ac_cv_lib_ncurses_initscr=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ncurses_initscr" >&5
-printf "%s\n" "$ac_cv_lib_ncurses_initscr" >&6; }
-if test "x$ac_cv_lib_ncurses_initscr" = xyes
-then :
-
-          have_curses=ncurses
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncurses"}
-
-fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-else
-	CURSES_CFLAGS=$pkg_cv_CURSES_CFLAGS
-	CURSES_LIBS=$pkg_cv_CURSES_LIBS
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-
-      have_curses=ncurses
-
-fi
-
-fi
-
-
-fi
-CURSES_CFLAGS=$(echo $CURSES_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
-
-if test "$have_curses" != no -a "$ac_sys_system" = "Darwin"; then
-
-  as_fn_append CURSES_CFLAGS " -D_XOPEN_SOURCE_EXTENDED=1"
-  printf "%s\n" "#define HAVE_NCURSESW 1" >>confdefs.h
-
-fi
-
-
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking curses module flags" >&5
-printf %s "checking curses module flags... " >&6; }
-if test "x$have_curses" = xno
-then :
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-
-else $as_nop
-
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&5
-printf "%s\n" "$have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)" >&6; }
-
-fi
-
-ac_fn_c_check_header_compile "$LINENO" "panel.h" "ac_cv_header_panel_h" "$ac_includes_default"
-if test "x$ac_cv_header_panel_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_PANEL_H 1" >>confdefs.h
-
-fi
-
-
-if test "x$ac_cv_header_panel_h" = xyes
-then :
-
-
-  if test "$ac_sys_system" != "Darwin"; then
-        if test "x$have_curses" = xncursesw
-then :
+printf "%s\n" "#define HAVE_NCURSES 1" >>confdefs.h
 
+   have_curses=yes
 
 pkg_failed=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panelw" >&5
-printf %s "checking for panelw... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panel" >&5
+printf %s "checking for panel... " >&6; }
 
 if test -n "$PANEL_CFLAGS"; then
     pkg_cv_PANEL_CFLAGS="$PANEL_CFLAGS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "panel") 2>&5
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panelw" 2>/dev/null`
+  pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panel" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -26339,12 +26218,12 @@ if test -n "$PANEL_LIBS"; then
     pkg_cv_PANEL_LIBS="$PANEL_LIBS"
  elif test -n "$PKG_CONFIG"; then
     if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panelw\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "panelw") 2>&5
+    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
+  ($PKG_CONFIG --exists --print-errors "panel") 2>&5
   ac_status=$?
   printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; then
-  pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panelw" 2>/dev/null`
+  pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panel" 2>/dev/null`
 		      test "x$?" != "x0" && pkg_failed=yes
 else
   pkg_failed=yes
@@ -26365,286 +26244,172 @@ else
         _pkg_short_errors_supported=no
 fi
         if test $_pkg_short_errors_supported = yes; then
-	        PANEL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "panelw" 2>&1`
+	        PANEL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "panel" 2>&1`
         else
-	        PANEL_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "panelw" 2>&1`
+	        PANEL_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "panel" 2>&1`
         fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$PANEL_PKG_ERRORS" >&5
 
+	have_panel=no
+elif test $pkg_failed = untried; then
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	have_panel=no
+else
+	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
+	PANEL_LIBS=$pkg_cv_PANEL_LIBS
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 
-        save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
-printf %s "checking for update_panels in -lpanelw... " >&6; }
-if test ${ac_cv_lib_panelw_update_panels+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpanelw  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+printf "%s\n" "#define HAVE_PANEL 1" >>confdefs.h
 
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char update_panels ();
-int
-main (void)
-{
-return update_panels ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_panelw_update_panels=yes
-else $as_nop
-  ac_cv_lib_panelw_update_panels=no
+     have_panel=yes
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
-printf "%s\n" "$ac_cv_lib_panelw_update_panels" >&6; }
-if test "x$ac_cv_lib_panelw_update_panels" = xyes
-then :
 
-            have_panel=panelw
-            PANEL_CFLAGS=${PANEL_CFLAGS-""}
-            PANEL_LIBS=${PANEL_LIBS-"-lpanelw"}
 
 fi
 
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-elif test $pkg_failed = untried; then
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-
-        save_CFLAGS=$CFLAGS
+save_CFLAGS=$CFLAGS
 save_CPPFLAGS=$CPPFLAGS
 save_LDFLAGS=$LDFLAGS
 save_LIBS=$LIBS
 
 
-          { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanelw" >&5
-printf %s "checking for update_panels in -lpanelw... " >&6; }
-if test ${ac_cv_lib_panelw_update_panels+y}
+  # Make sure we've got the header defines.
+  as_fn_append CPPFLAGS " $CURSES_CFLAGS $PANEL_CFLAGS"
+  ac_fn_c_check_header_compile "$LINENO" "ncursesw/curses.h" "ac_cv_header_ncursesw_curses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncursesw_curses_h" = xyes
 then :
-  printf %s "(cached) " >&6
-else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpanelw  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+  printf "%s\n" "#define HAVE_NCURSESW_CURSES_H 1" >>confdefs.h
 
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-char update_panels ();
-int
-main (void)
-{
-return update_panels ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"
-then :
-  ac_cv_lib_panelw_update_panels=yes
-else $as_nop
-  ac_cv_lib_panelw_update_panels=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panelw_update_panels" >&5
-printf "%s\n" "$ac_cv_lib_panelw_update_panels" >&6; }
-if test "x$ac_cv_lib_panelw_update_panels" = xyes
+ac_fn_c_check_header_compile "$LINENO" "ncursesw/ncurses.h" "ac_cv_header_ncursesw_ncurses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncursesw_ncurses_h" = xyes
 then :
-
-            have_panel=panelw
-            PANEL_CFLAGS=${PANEL_CFLAGS-""}
-            PANEL_LIBS=${PANEL_LIBS-"-lpanelw"}
+  printf "%s\n" "#define HAVE_NCURSESW_NCURSES_H 1" >>confdefs.h
 
 fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-else
-	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
-	PANEL_LIBS=$pkg_cv_PANEL_LIBS
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-
-        have_panel=panelw
+ac_fn_c_check_header_compile "$LINENO" "ncursesw/panel.h" "ac_cv_header_ncursesw_panel_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncursesw_panel_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NCURSESW_PANEL_H 1" >>confdefs.h
 
 fi
+ac_fn_c_check_header_compile "$LINENO" "ncurses/curses.h" "ac_cv_header_ncurses_curses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncurses_curses_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NCURSES_CURSES_H 1" >>confdefs.h
 
 fi
-  fi
-
-  if test "x$have_curses" = xncurses
+ac_fn_c_check_header_compile "$LINENO" "ncurses/ncurses.h" "ac_cv_header_ncurses_ncurses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncurses_ncurses_h" = xyes
 then :
+  printf "%s\n" "#define HAVE_NCURSES_NCURSES_H 1" >>confdefs.h
 
-
-pkg_failed=no
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for panel" >&5
-printf %s "checking for panel... " >&6; }
-
-if test -n "$PANEL_CFLAGS"; then
-    pkg_cv_PANEL_CFLAGS="$PANEL_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "panel") 2>&5
-  ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_PANEL_CFLAGS=`$PKG_CONFIG --cflags "panel" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
 fi
-if test -n "$PANEL_LIBS"; then
-    pkg_cv_PANEL_LIBS="$PANEL_LIBS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"panel\""; } >&5
-  ($PKG_CONFIG --exists --print-errors "panel") 2>&5
-  ac_status=$?
-  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_PANEL_LIBS=`$PKG_CONFIG --libs "panel" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-
-
+ac_fn_c_check_header_compile "$LINENO" "ncurses/panel.h" "ac_cv_header_ncurses_panel_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncurses_panel_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NCURSES_PANEL_H 1" >>confdefs.h
 
-if test $pkg_failed = yes; then
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+fi
+ac_fn_c_check_header_compile "$LINENO" "curses.h" "ac_cv_header_curses_h" "$ac_includes_default"
+if test "x$ac_cv_header_curses_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_CURSES_H 1" >>confdefs.h
 
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
-        _pkg_short_errors_supported=yes
-else
-        _pkg_short_errors_supported=no
 fi
-        if test $_pkg_short_errors_supported = yes; then
-	        PANEL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "panel" 2>&1`
-        else
-	        PANEL_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "panel" 2>&1`
-        fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$PANEL_PKG_ERRORS" >&5
+ac_fn_c_check_header_compile "$LINENO" "ncurses.h" "ac_cv_header_ncurses_h" "$ac_includes_default"
+if test "x$ac_cv_header_ncurses_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_NCURSES_H 1" >>confdefs.h
 
+fi
+ac_fn_c_check_header_compile "$LINENO" "panel.h" "ac_cv_header_panel_h" "$ac_includes_default"
+if test "x$ac_cv_header_panel_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PANEL_H 1" >>confdefs.h
 
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
+fi
 
 
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
-printf %s "checking for update_panels in -lpanel... " >&6; }
-if test ${ac_cv_lib_panel_update_panels+y}
+  # Check that we're able to link with crucial curses/panel functions. This
+  # also serves as a fallback in case pkg-config failed.
+  as_fn_append LIBS " $CURSES_LIBS $PANEL_LIBS"
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing initscr" >&5
+printf %s "checking for library containing initscr... " >&6; }
+if test ${ac_cv_search_initscr+y}
 then :
   printf %s "(cached) " >&6
 else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpanel  $LIBS"
+  ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
 /* Override any GCC internal prototype to avoid an error.
    Use char because int might match the return type of a GCC
    builtin and then its argument prototype would still apply.  */
-char update_panels ();
+char initscr ();
 int
 main (void)
 {
-return update_panels ();
+return initscr ();
   ;
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"
+for ac_lib in '' ncursesw ncurses
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
 then :
-  ac_cv_lib_panel_update_panels=yes
-else $as_nop
-  ac_cv_lib_panel_update_panels=no
+  ac_cv_search_initscr=$ac_res
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+    conftest$ac_exeext
+  if test ${ac_cv_search_initscr+y}
+then :
+  break
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
-printf "%s\n" "$ac_cv_lib_panel_update_panels" >&6; }
-if test "x$ac_cv_lib_panel_update_panels" = xyes
+done
+if test ${ac_cv_search_initscr+y}
 then :
 
-          have_panel=panel
-          PANEL_CFLAGS=${PANEL_CFLAGS-""}
-          PANEL_LIBS=${PANEL_LIBS-"-lpanel"}
-
+else $as_nop
+  ac_cv_search_initscr=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_initscr" >&5
+printf "%s\n" "$ac_cv_search_initscr" >&6; }
+ac_res=$ac_cv_search_initscr
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+  if test "x$have_curses" = xno
+then :
+  have_curses=yes
+       CURSES_LIBS=${CURSES_LIBS-"$ac_cv_search_initscr"}
+fi
+else $as_nop
+  have_curses=no
 fi
 
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-elif test $pkg_failed = untried; then
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-
-      save_CFLAGS=$CFLAGS
-save_CPPFLAGS=$CPPFLAGS
-save_LDFLAGS=$LDFLAGS
-save_LIBS=$LIBS
-
-
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for update_panels in -lpanel" >&5
-printf %s "checking for update_panels in -lpanel... " >&6; }
-if test ${ac_cv_lib_panel_update_panels+y}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing update_panels" >&5
+printf %s "checking for library containing update_panels... " >&6; }
+if test ${ac_cv_search_update_panels+y}
 then :
   printf %s "(cached) " >&6
 else $as_nop
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpanel  $LIBS"
+  ac_func_search_save_LIBS=$LIBS
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -26660,76 +26425,82 @@ return update_panels ();
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_link "$LINENO"
+for ac_lib in '' panelw panel
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
 then :
-  ac_cv_lib_panel_update_panels=yes
-else $as_nop
-  ac_cv_lib_panel_update_panels=no
+  ac_cv_search_update_panels=$ac_res
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+    conftest$ac_exeext
+  if test ${ac_cv_search_update_panels+y}
+then :
+  break
 fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_panel_update_panels" >&5
-printf "%s\n" "$ac_cv_lib_panel_update_panels" >&6; }
-if test "x$ac_cv_lib_panel_update_panels" = xyes
+done
+if test ${ac_cv_search_update_panels+y}
 then :
 
-          have_panel=panel
-          PANEL_CFLAGS=${PANEL_CFLAGS-""}
-          PANEL_LIBS=${PANEL_LIBS-"-lpanel"}
-
+else $as_nop
+  ac_cv_search_update_panels=no
 fi
-
-
-CFLAGS=$save_CFLAGS
-CPPFLAGS=$save_CPPFLAGS
-LDFLAGS=$save_LDFLAGS
-LIBS=$save_LIBS
-
-
-
-else
-	PANEL_CFLAGS=$pkg_cv_PANEL_CFLAGS
-	PANEL_LIBS=$pkg_cv_PANEL_LIBS
-        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-printf "%s\n" "yes" >&6; }
-
-      have_panel=panel
-
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
 fi
-
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_update_panels" >&5
+printf "%s\n" "$ac_cv_search_update_panels" >&6; }
+ac_res=$ac_cv_search_update_panels
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+  if test "x$have_panel" = xno
+then :
+  have_panel=yes
+       PANEL_LIBS=${PANEL_LIBS-"$ac_cv_search_update_panels"}
+fi
+else $as_nop
+  have_panel=no
 fi
 
 
-fi
-PANEL_CFLAGS=$(echo $PANEL_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking panel flags" >&5
-printf %s "checking panel flags... " >&6; }
-if test "x$have_panel" = xno
+
+if test "have_curses" != "no"
 then :
 
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
+CURSES_CFLAGS=$(echo $CURSES_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-else $as_nop
+if test "x$ac_sys_system" = xDarwin
+then :
 
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&5
-printf "%s\n" "$have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)" >&6; }
 
-fi
+  as_fn_append CURSES_CFLAGS " -D_XOPEN_SOURCE_EXTENDED=1"
 
-# first curses header check
-ac_save_cppflags="$CPPFLAGS"
-if test "$cross_compiling" = no; then
-  CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw"
 fi
 
+PANEL_CFLAGS=$(echo $PANEL_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
+
 # On Solaris, term.h requires curses.h
 ac_fn_c_check_header_compile "$LINENO" "term.h" "ac_cv_header_term_h" "
-#ifdef HAVE_CURSES_H
-#include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
 #endif
 
 "
@@ -26749,7 +26520,22 @@ then :
 else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#include <curses.h>
+
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
+
 int
 main (void)
 {
@@ -26779,10 +26565,6 @@ printf "%s\n" "#define MVWDELCH_IS_EXPRESSION 1" >>confdefs.h
 
 fi
 
-# Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque
-# structs since version 5.7.  If the macro is defined as zero before including
-# [n]curses.h, ncurses will expose fields of the structs regardless of the
-# configuration.
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether WINDOW has _flags" >&5
 printf %s "checking whether WINDOW has _flags... " >&6; }
 if test ${ac_cv_window_has_flags+y}
@@ -26792,8 +26574,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-  #define NCURSES_OPAQUE 0
-  #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -26838,8 +26632,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -26884,8 +26690,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -26930,8 +26748,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -26976,8 +26806,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27022,8 +26864,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27068,8 +26922,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27114,8 +26980,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27160,8 +27038,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27206,8 +27096,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27252,8 +27154,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27298,8 +27212,20 @@ else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
 
 int
 main (void)
@@ -27335,6 +27261,13 @@ fi
 
 CPPFLAGS=$ac_save_cppflags
 
+fi
+CFLAGS=$save_CFLAGS
+CPPFLAGS=$save_CPPFLAGS
+LDFLAGS=$save_LDFLAGS
+LIBS=$save_LIBS
+
+
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for device files" >&5
 printf "%s\n" "$as_me: checking for device files" >&6;}
 
@@ -28526,9 +28459,6 @@ fi
 
 # builtin hash modules
 default_hashlib_hashes="md5,sha1,sha2,sha3,blake2"
-
-printf "%s\n" "#define PY_BUILTIN_HASHLIB_HASHES /**/" >>confdefs.h
-
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-builtin-hashlib-hashes" >&5
 printf %s "checking for --with-builtin-hashlib-hashes... " >&6; }
 
@@ -28553,6 +28483,7 @@ fi
 
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $with_builtin_hashlib_hashes" >&5
 printf "%s\n" "$with_builtin_hashlib_hashes" >&6; }
+
 printf "%s\n" "#define PY_BUILTIN_HASHLIB_HASHES \"$with_builtin_hashlib_hashes\"" >>confdefs.h
 
 
@@ -28712,10 +28643,6 @@ printf %s "checking whether libatomic is needed by <pyatomic.h>... " >&6; }
 if test ${ac_cv_libatomic_needed+y}
 then :
   printf %s "(cached) " >&6
-else $as_nop
-  if test "$cross_compiling" = yes
-then :
-    ac_cv_libatomic_needed=no
 else $as_nop
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -28757,16 +28684,14 @@ int main()
 }
 
 _ACEOF
-if ac_fn_c_try_run "$LINENO"
+if ac_fn_c_try_link "$LINENO"
 then :
   ac_cv_libatomic_needed=no
 else $as_nop
     ac_cv_libatomic_needed=yes
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_libatomic_needed" >&5
 printf "%s\n" "$ac_cv_libatomic_needed" >&6; }
@@ -30404,7 +30329,7 @@ then :
 
     if true
 then :
-  if test "$have_curses" != "no"
+  if test "$have_curses" = "yes"
 then :
   py_cv_module__curses=yes
 else $as_nop
@@ -30443,7 +30368,7 @@ then :
 
     if true
 then :
-  if test "$have_panel" != "no"
+  if test "$have_curses" = "yes" && test "$have_panel" = "yes"
 then :
   py_cv_module__curses_panel=yes
 else $as_nop
diff --git a/configure.ac b/configure.ac
index 8eb96767487592..3fcb18922c5330 100644
--- a/configure.ac
+++ b/configure.ac
@@ -164,7 +164,7 @@ AC_ARG_WITH([build-python],
     dnl Build Python interpreter is used for regeneration and freezing.
     ac_cv_prog_PYTHON_FOR_REGEN=$with_build_python
     PYTHON_FOR_FREEZE="$with_build_python"
-    PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) '$with_build_python
+    PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(srcdir)/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH) _PYTHON_SYSCONFIGDATA_PATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`) '$with_build_python
     AC_MSG_RESULT([$with_build_python])
   ], [
     AS_VAR_IF([cross_compiling], [yes],
@@ -336,7 +336,7 @@ then
 	*-*-emscripten)
 	    ac_sys_system=Emscripten
 	    ;;
-	*-*-wasi)
+	*-*-wasi*)
 	    ac_sys_system=WASI
 	    ;;
 	*)
@@ -382,7 +382,7 @@ AC_MSG_RESULT(["$MACHDEP"])
 # On cross-compile builds, configure will look for a host-specific compiler by
 # prepending the user-provided host triple to the required binary name.
 #
-# On iOS, this results in binaries like "arm64-apple-ios12.0-simulator-gcc",
+# On iOS, this results in binaries like "arm64-apple-ios13.0-simulator-gcc",
 # which isn't a binary that exists, and isn't very convenient, as it contains the
 # iOS version. As the default cross-compiler name won't exist, configure falls
 # back to gcc, which *definitely* won't work. We're providing wrapper scripts for
@@ -418,9 +418,9 @@ if test -z "$CPP"; then
 fi
 if test -z "$CXX"; then
 	case "$host" in
-		aarch64-apple-ios*-simulator) CXX=arm64-apple-ios-simulator-clang ;;
-		aarch64-apple-ios*)           CXX=arm64-apple-ios-clang ;;
-		x86_64-apple-ios*-simulator)  CXX=x86_64-apple-ios-simulator-clang ;;
+		aarch64-apple-ios*-simulator) CXX=arm64-apple-ios-simulator-clang++ ;;
+		aarch64-apple-ios*)           CXX=arm64-apple-ios-clang++ ;;
+		x86_64-apple-ios*-simulator)  CXX=x86_64-apple-ios-simulator-clang++ ;;
 		*)
 	esac
 fi
@@ -695,6 +695,47 @@ AC_SUBST([INSTALLTARGETS])
 AC_DEFINE_UNQUOTED([_PYTHONFRAMEWORK], ["${PYTHONFRAMEWORK}"],
                    [framework name])
 
+dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output
+AC_MSG_CHECKING([for --with-app-store-compliance])
+AC_ARG_WITH(
+  [app_store_compliance],
+  [AS_HELP_STRING(
+    [--with-app-store-compliance=@<:@PATCH-FILE@:>@],
+    [Enable any patches required for compiliance with app stores.
+     Optional PATCH-FILE specifies the custom patch to apply.]
+  )],[
+    case "$withval" in
+    yes)
+      case $ac_sys_system in
+        Darwin|iOS)
+          # iOS is able to share the macOS patch
+          APP_STORE_COMPLIANCE_PATCH="Mac/Resources/app-store-compliance.patch"
+          ;;
+        *) AC_MSG_ERROR([no default app store compliance patch available for $ac_sys_system]) ;;
+      esac
+      AC_MSG_RESULT([applying default app store compliance patch])
+      ;;
+    *)
+      APP_STORE_COMPLIANCE_PATCH="${withval}"
+      AC_MSG_RESULT([applying custom app store compliance patch])
+      ;;
+    esac
+  ],[
+    case $ac_sys_system in
+      iOS)
+        # Always apply the compliance patch on iOS; we can use the macOS patch
+        APP_STORE_COMPLIANCE_PATCH="Mac/Resources/app-store-compliance.patch"
+        AC_MSG_RESULT([applying default app store compliance patch])
+        ;;
+      *)
+        # No default app compliance patching on any other platform
+        APP_STORE_COMPLIANCE_PATCH=
+        AC_MSG_RESULT([not patching for app store compliance])
+        ;;
+    esac
+])
+AC_SUBST([APP_STORE_COMPLIANCE_PATCH])
+
 AC_SUBST([_PYTHON_HOST_PLATFORM])
 if test "$cross_compiling" = yes; then
 	case "$host" in
@@ -716,8 +757,10 @@ if test "$cross_compiling" = yes; then
 		_host_device=${_host_device:=os}
 
 		# IPHONEOS_DEPLOYMENT_TARGET is the minimum supported iOS version
-		IPHONEOS_DEPLOYMENT_TARGET=${_host_os:3}
-		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=12.0}
+		AC_MSG_CHECKING([iOS deployment target])
+		IPHONEOS_DEPLOYMENT_TARGET=$(echo ${_host_os} | cut -c4-)
+		IPHONEOS_DEPLOYMENT_TARGET=${IPHONEOS_DEPLOYMENT_TARGET:=13.0}
+		AC_MSG_RESULT([$IPHONEOS_DEPLOYMENT_TARGET])
 
 		case "$host_cpu" in
 			aarch64)
@@ -1138,7 +1181,7 @@ AS_CASE([$host/$ac_cv_cc_name],
   [aarch64-*-linux-gnu/gcc],         [PY_SUPPORT_TIER=2], dnl Linux ARM64, glibc, gcc+clang
   [aarch64-*-linux-gnu/clang],       [PY_SUPPORT_TIER=2],
   [powerpc64le-*-linux-gnu/gcc],     [PY_SUPPORT_TIER=2], dnl Linux on PPC64 little endian, glibc, gcc
-  [wasm32-unknown-wasi/clang],       [PY_SUPPORT_TIER=2], dnl WebAssembly System Interface, clang
+  [wasm32-unknown-wasip1/clang],     [PY_SUPPORT_TIER=2], dnl WebAssembly System Interface preview1, clang
   [x86_64-*-linux-gnu/clang],        [PY_SUPPORT_TIER=2], dnl Linux on AMD64, any vendor, glibc, clang
 
   [aarch64-pc-windows-msvc/msvc],    [PY_SUPPORT_TIER=3], dnl Windows ARM64, MSVC
@@ -1296,6 +1339,9 @@ AC_ARG_WITH([suffix],
 ])
 AC_MSG_RESULT([$EXEEXT])
 
+# Make sure we keep EXEEXT and ac_exeext sync'ed.
+AS_VAR_SET([ac_exeext], [$EXEEXT])
+
 # Test whether we're running on a non-case-sensitive system, in which
 # case we give a warning if no ext is given
 AC_SUBST([BUILDEXEEXT])
@@ -1607,9 +1653,9 @@ then
       AS_VAR_IF([host_cpu], [wasm64], [AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-memory64"])])
     ],
     dnl TODO: support other WASI runtimes
-    dnl wasmtime starts the proces with "/" as CWD. For OOT builds add the
+    dnl wasmtime starts the process with "/" as CWD. For OOT builds add the
     dnl directory containing _sysconfigdata to PYTHONPATH.
-    [WASI/*], [HOSTRUNNER='wasmtime run --wasm max-wasm-stack=8388608 --wasi preview2 --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/'],
+    [WASI/*], [HOSTRUNNER='wasmtime run --wasm max-wasm-stack=8388608 --wasi preview2=n --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/'],
     [HOSTRUNNER='']
   )
 fi
@@ -1681,7 +1727,9 @@ fi
 
 # For calculating the .so ABI tag.
 AC_SUBST([ABIFLAGS])
+AC_SUBST([ABI_THREAD])
 ABIFLAGS=""
+ABI_THREAD=""
 
 # Check for --disable-gil
 # --disable-gil
@@ -1698,6 +1746,7 @@ then
             [Define if you want to disable the GIL])
   # Add "t" for "threaded"
   ABIFLAGS="${ABIFLAGS}t"
+  ABI_THREAD="t"
 fi
 
 # Check for --with-pydebug
@@ -1731,6 +1780,10 @@ then
             [Define if you want to enable tracing references for debugging purpose])
 fi
 
+if test "$disable_gil" = "yes" -a "$with_trace_refs" = "yes";
+then
+  AC_MSG_ERROR([--disable-gil cannot be used with --with-trace-refs])
+fi
 
 # Check for --enable-pystats
 AC_MSG_CHECKING([for --enable-pystats])
@@ -2161,6 +2214,27 @@ AS_VAR_IF([enable_shared], [yes], [
   BOLT_BINARIES="${BOLT_BINARIES} \$(INSTSONAME)"
 ])
 
+AC_ARG_VAR(
+  [BOLT_COMMON_FLAGS],
+  [Common arguments to llvm-bolt when instrumenting and applying]
+)
+
+AC_MSG_CHECKING([BOLT_COMMON_FLAGS])
+if test -z "${BOLT_COMMON_FLAGS}"
+then
+  AS_VAR_SET(
+    [BOLT_COMMON_FLAGS],
+    [m4_normalize("
+      [-update-debug-sections]
+
+      dnl At least LLVM 19.x doesn't support computed gotos in PIC compiled code.
+      dnl Exclude functions containing computed gotos.
+      dnl TODO this may be fixed in LLVM 20.x via https://github.com/llvm/llvm-project/pull/120267.
+      [-skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1]
+    ")]
+  )
+fi
+
 AC_ARG_VAR(
   [BOLT_INSTRUMENT_FLAGS],
   [Arguments to llvm-bolt when instrumenting binaries]
@@ -2168,7 +2242,7 @@ AC_ARG_VAR(
 AC_MSG_CHECKING([BOLT_INSTRUMENT_FLAGS])
 if test -z "${BOLT_INSTRUMENT_FLAGS}"
 then
-  BOLT_INSTRUMENT_FLAGS=
+  BOLT_INSTRUMENT_FLAGS="${BOLT_COMMON_FLAGS}"
 fi
 AC_MSG_RESULT([$BOLT_INSTRUMENT_FLAGS])
 
@@ -2182,9 +2256,9 @@ then
   AS_VAR_SET(
     [BOLT_APPLY_FLAGS],
     [m4_normalize("
-     -update-debug-sections
+     ${BOLT_COMMON_FLAGS}
      -reorder-blocks=ext-tsp
-     -reorder-functions=hfsort+
+     -reorder-functions=cdsort
      -split-functions
      -icf=1
      -inline-all
@@ -2432,7 +2506,7 @@ AC_DEFUN([PY_CHECK_CC_WARNING], [
   AS_VAR_PUSHDEF([py_var], [ac_cv_$1_]m4_normalize($2)[_warning])
   AC_CACHE_CHECK([m4_ifblank([$3], [if we can $1 $CC $2 warning], [$3])], [py_var], [
     AS_VAR_COPY([py_cflags], [CFLAGS])
-    AS_VAR_APPEND([CFLAGS], ["-W$2 -Werror"])
+    AS_VAR_APPEND([CFLAGS], [" -W$2 -Werror"])
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
                       [AS_VAR_SET([py_var], [yes])],
                       [AS_VAR_SET([py_var], [no])])
@@ -2932,7 +3006,7 @@ AC_CHECK_HEADERS([ \
   linux/tipc.h linux/wait.h netdb.h net/ethernet.h netinet/in.h netpacket/packet.h poll.h process.h pthread.h pty.h \
   sched.h setjmp.h shadow.h signal.h spawn.h stropts.h sys/audioio.h sys/bsdtty.h sys/devpoll.h \
   sys/endian.h sys/epoll.h sys/event.h sys/eventfd.h sys/file.h sys/ioctl.h sys/kern_control.h \
-  sys/loadavg.h sys/lock.h sys/memfd.h sys/mkdev.h sys/mman.h sys/modem.h sys/param.h sys/poll.h \
+  sys/loadavg.h sys/lock.h sys/memfd.h sys/mkdev.h sys/mman.h sys/modem.h sys/param.h sys/pidfd.h sys/poll.h \
   sys/random.h sys/resource.h sys/select.h sys/sendfile.h sys/socket.h sys/soundcard.h sys/stat.h \
   sys/statvfs.h sys/sys_domain.h sys/syscall.h sys/sysmacros.h sys/termio.h sys/time.h sys/times.h sys/timerfd.h \
   sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h sys/xattr.h sysexits.h syslog.h \
@@ -3417,7 +3491,7 @@ then
 		LDCXXSHARED='$(CXX) -dynamiclib -F . -framework $(PYTHONFRAMEWORK)'
 		BLDSHARED="$LDSHARED"
 		;;
-	Emscripten|WASI)
+	Emscripten*|WASI*)
 		LDSHARED='$(CC) -shared'
 		LDCXXSHARED='$(CXX) -shared';;
 	Linux*|GNU*|QNX*|VxWorks*|Haiku*)
@@ -3463,7 +3537,7 @@ then
 		LDCXXSHARED='$(CXX) -Wl,-G,-Bexport';;
 	WASI*)
 		AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
-			dnl not iplemented yet
+			dnl not implemented yet
 		]);;
 	CYGWIN*)
 		LDSHARED="gcc -shared -Wl,--enable-auto-image-base"
@@ -3636,7 +3710,7 @@ esac
 AC_MSG_RESULT([$SHLIBS])
 
 dnl perf trampoline is Linux specific and requires an arch-specific
-dnl trampoline in asssembly.
+dnl trampoline in assembly.
 AC_MSG_CHECKING([perf trampoline])
 AS_CASE([$PLATFORM_TRIPLET],
   [x86_64-linux-gnu], [perf_trampoline=yes],
@@ -3691,7 +3765,7 @@ AS_VAR_IF([have_uuid], [missing], [
     ], [
       WITH_SAVE_ENV([
         CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS"
-        LDFLAGS="$LDFLAGS $LIBUUID_LIBS"
+        LIBS="$LIBS $LIBUUID_LIBS"
         AC_CHECK_HEADERS([uuid/uuid.h], [
           PY_CHECK_LIB([uuid], [uuid_generate_time], [have_uuid=yes])
           PY_CHECK_LIB([uuid], [uuid_generate_time_safe],
@@ -3925,7 +3999,7 @@ AS_VAR_IF([have_libffi], [missing], [
   PKG_CHECK_MODULES([LIBFFI], [libffi], [have_libffi=yes], [
     WITH_SAVE_ENV([
       CPPFLAGS="$CPPFLAGS $LIBFFI_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBFFI_LIBS"
+      LIBS="$LIBS $LIBFFI_LIBS"
       AC_CHECK_HEADER([ffi.h], [
         AC_CHECK_LIB([ffi], [ffi_call], [
           have_libffi=yes
@@ -3959,8 +4033,8 @@ AS_VAR_IF([have_libffi], [yes], [
   AS_VAR_IF([ac_cv_lib_dl_dlopen], [yes], [AS_VAR_APPEND([LIBFFI_LIBS], [" -ldl"])])
 
   WITH_SAVE_ENV([
-    CFLAGS="$LIBFFI_CFLAGS $CFLAGS"
-    LDFLAGS="$LIBFFI_LIBS $LDFLAGS"
+    CFLAGS="$CFLAGS $LIBFFI_CFLAGS"
+    LIBS="$LIBS $LIBFFI_LIBS"
 
     PY_CHECK_FUNC([ffi_prep_cif_var], [@%:@include <ffi.h>])
     PY_CHECK_FUNC([ffi_prep_closure_loc], [@%:@include <ffi.h>])
@@ -3980,6 +4054,13 @@ AC_ARG_WITH(
   [with_system_libmpdec="yes"])
 AC_MSG_RESULT([$with_system_libmpdec])
 
+AC_DEFUN([USE_BUNDLED_LIBMPDEC],
+         [LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
+          LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
+          LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
+          have_mpdec=yes
+          with_system_libmpdec=no])
+
 AS_VAR_IF(
   [with_system_libmpdec], [yes],
   [PKG_CHECK_MODULES(
@@ -3987,14 +4068,12 @@ AS_VAR_IF(
     [LIBMPDEC_CFLAGS=${LIBMPDEC_CFLAGS-""}
      LIBMPDEC_LIBS=${LIBMPDEC_LIBS-"-lmpdec -lm"}
      LIBMPDEC_INTERNAL=])],
-  [LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
-   LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
-   LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"])
+  [USE_BUNDLED_LIBMPDEC()])
 
 AS_VAR_IF([with_system_libmpdec], [yes],
   [WITH_SAVE_ENV([
-    CPPFLAGS="$LIBMPDEC_CFLAGS $CPPFLAGS"
-    LIBS="$LIBMPDEC_LIBS $LIBS"
+    CPPFLAGS="$CPPFLAGS $LIBMPDEC_CFLAGS"
+    LIBS="$LIBS $LIBMPDEC_LIBS"
 
     AC_LINK_IFELSE([
       AC_LANG_PROGRAM([
@@ -4006,13 +4085,15 @@ AS_VAR_IF([with_system_libmpdec], [yes],
       [have_mpdec=yes],
       [have_mpdec=no])
   ])],
-  [AS_VAR_SET([have_mpdec], [yes])
-   AC_MSG_WARN([m4_normalize([
+  [AC_MSG_WARN([m4_normalize([
      the bundled copy of libmpdecimal is scheduled for removal in Python 3.15;
      consider using a system installed mpdecimal library.])])])
 
 AS_IF([test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"],
-      [AC_MSG_WARN([no system libmpdecimal found; unable to build _decimal])])
+      [AC_MSG_WARN([m4_normalize([
+         no system libmpdecimal found; falling back to bundled libmpdecimal
+         (deprecated and scheduled for removal in Python 3.15)])])
+       USE_BUNDLED_LIBMPDEC()])
 
 # Disable forced inlining in debug builds, see GH-94847
 AS_VAR_IF(
@@ -4125,7 +4206,7 @@ WITH_SAVE_ENV([
 dnl bpo-45774/GH-29507: The CPP check in AC_CHECK_HEADER can fail on FreeBSD,
 dnl hence CPPFLAGS instead of CFLAGS.
   CPPFLAGS="$CPPFLAGS $LIBSQLITE3_CFLAGS"
-  LDFLAGS="$LIBSQLITE3_LIBS $LDFLAGS"
+  LIBS="$LIBS $LIBSQLITE3_LIBS"
 
   AC_CHECK_HEADER([sqlite3.h], [
     have_sqlite3=yes
@@ -4228,7 +4309,7 @@ AS_CASE([$ac_sys_system],
 
 WITH_SAVE_ENV([
   CPPFLAGS="$CPPFLAGS $TCLTK_CFLAGS"
-  LIBS="$TCLTK_LIBS $LDFLAGS"
+  LIBS="$LIBS $TCLTK_LIBS"
 
   AC_LINK_IFELSE([
     AC_LANG_PROGRAM([
@@ -4270,7 +4351,7 @@ AC_ARG_VAR([GDBM_CFLAGS], [C compiler flags for gdbm])
 AC_ARG_VAR([GDBM_LIBS], [additional linker flags for gdbm])
 WITH_SAVE_ENV([
   CPPFLAGS="$CPPFLAGS $GDBM_CFLAGS"
-  LDFLAGS="$GDBM_LIBS $LDFLAGS"
+  LIBS="$LIBS $GDBM_LIBS"
   AC_CHECK_HEADERS([gdbm.h], [
     AC_CHECK_LIB([gdbm], [gdbm_open], [
       have_gdbm=yes
@@ -5053,7 +5134,7 @@ AC_CHECK_FUNCS([ \
   sigfillset siginterrupt sigpending sigrelse sigtimedwait sigwait \
   sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \
   sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile \
-  tmpnam tmpnam_r truncate ttyname umask uname unlinkat unlockpt utimensat utimes vfork \
+  tmpnam tmpnam_r truncate ttyname_r umask uname unlinkat unlockpt utimensat utimes vfork \
   wait wait3 wait4 waitid waitpid wcscoll wcsftime wcsxfrm wmemcmp writev \
 ])
 
@@ -5228,7 +5309,7 @@ PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0], [
 ], [
   WITH_SAVE_ENV([
     CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS"
-    LDFLAGS="$LDFLAGS $ZLIB_LIBS"
+    LIBS="$LIBS $ZLIB_LIBS"
     AC_CHECK_HEADERS([zlib.h], [
       PY_CHECK_LIB([z], [gzread], [have_zlib=yes], [have_zlib=no])
     ], [have_zlib=no])
@@ -5252,7 +5333,7 @@ PY_CHECK_EMSCRIPTEN_PORT([BZIP2], [-sUSE_BZIP2])
 PKG_CHECK_MODULES([BZIP2], [bzip2], [have_bzip2=yes], [
   WITH_SAVE_ENV([
     CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS"
-    LDFLAGS="$LDFLAGS $BZIP2_LIBS"
+    LIBS="$LIBS $BZIP2_LIBS"
     AC_CHECK_HEADERS([bzlib.h], [
       AC_CHECK_LIB([bz2], [BZ2_bzCompress], [have_bzip2=yes], [have_bzip2=no])
     ], [have_bzip2=no])
@@ -5266,7 +5347,7 @@ PKG_CHECK_MODULES([BZIP2], [bzip2], [have_bzip2=yes], [
 PKG_CHECK_MODULES([LIBLZMA], [liblzma], [have_liblzma=yes], [
   WITH_SAVE_ENV([
     CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS"
-    LDFLAGS="$LDFLAGS $LIBLZMA_LIBS"
+    LIBS="$LIBS $LIBLZMA_LIBS"
     AC_CHECK_HEADERS([lzma.h], [
       AC_CHECK_LIB([lzma], [lzma_easy_encoder], [have_liblzma=yes], [have_liblzma=no])
     ], [have_liblzma=no])
@@ -5796,28 +5877,26 @@ AS_VAR_IF([ac_cv_gcc_asm_for_x64], [yes], [
 # * Check for various properties of floating point *
 # **************************************************
 
-AX_C_FLOAT_WORDS_BIGENDIAN
-if test "$ax_cv_c_float_words_bigendian" = "yes"
-then
-  AC_DEFINE([DOUBLE_IS_BIG_ENDIAN_IEEE754], [1],
-  [Define if C doubles are 64-bit IEEE 754 binary format, stored
-   with the most significant byte first])
-elif test "$ax_cv_c_float_words_bigendian" = "no"
-then
-  AC_DEFINE([DOUBLE_IS_LITTLE_ENDIAN_IEEE754], [1],
-  [Define if C doubles are 64-bit IEEE 754 binary format, stored
-   with the least significant byte first])
-else
-  # Some ARM platforms use a mixed-endian representation for doubles.
-  # While Python doesn't currently have full support for these platforms
-  # (see e.g., issue 1762561), we can at least make sure that float <-> string
-  # conversions work.
-  # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big
-  # or little, then it must be this?
-  AC_DEFINE([DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754], [1],
-  [Define if C doubles are 64-bit IEEE 754 binary format, stored
-   in ARM mixed-endian order (byte order 45670123)])
-fi
+AX_C_FLOAT_WORDS_BIGENDIAN(
+  [AC_DEFINE([DOUBLE_IS_BIG_ENDIAN_IEEE754], [1],
+             [Define if C doubles are 64-bit IEEE 754 binary format,
+              stored with the most significant byte first])],
+  [AC_DEFINE([DOUBLE_IS_LITTLE_ENDIAN_IEEE754], [1],
+             [Define if C doubles are 64-bit IEEE 754 binary format,
+              stored with the least significant byte first])],
+  [AS_CASE([$host_cpu],
+           [*arm*], [# Some ARM platforms use a mixed-endian representation for
+                     # doubles. While Python doesn't currently have full support
+                     # for these platforms (see e.g., issue 1762561), we can at
+                     # least make sure that float <-> string conversions work.
+                     # FLOAT_WORDS_BIGENDIAN doesn't actually detect this case,
+                     # but if it's not big or little, then it must be this?
+                     AC_DEFINE([DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754], [1],
+                               [Define if C doubles are 64-bit IEEE 754 binary format,
+                                stored in ARM mixed-endian order (byte order 45670123)])],
+           [wasm*], [AC_DEFINE([DOUBLE_IS_LITTLE_ENDIAN_IEEE754], [1],
+                               [Define if C doubles are 64-bit IEEE 754 binary format,
+                                stored with the least significant byte first])])])
 
 # The short float repr introduced in Python 3.1 requires the
 # correctly-rounded string <-> double conversion functions from
@@ -6111,16 +6190,19 @@ AC_MSG_CHECKING([LDVERSION])
 LDVERSION='$(VERSION)$(ABIFLAGS)'
 AC_MSG_RESULT([$LDVERSION])
 
-# Configure the flags and dependencies used when compiling shared modules
+# Configure the flags and dependencies used when compiling shared modules.
+# Do not rename LIBPYTHON - it's accessed via sysconfig by package build
+# systems (e.g. Meson) to decide whether to link extension modules against
+# libpython.
 AC_SUBST([MODULE_DEPS_SHARED])
-AC_SUBST([MODULE_LDFLAGS])
+AC_SUBST([LIBPYTHON])
 MODULE_DEPS_SHARED='$(MODULE_DEPS_STATIC) $(EXPORTSYMS)'
-MODULE_LDFLAGS=''
+LIBPYTHON=''
 
 # On Android and Cygwin the shared libraries must be linked with libpython.
 if test "$PY_ENABLE_SHARED" = "1" && ( test -n "$ANDROID_API_LEVEL" || test "$MACHDEP" = "cygwin"); then
   MODULE_DEPS_SHARED="$MODULE_DEPS_SHARED \$(LDLIBRARY)"
-  MODULE_LDFLAGS="\$(BLDLIBRARY)"
+  LIBPYTHON="\$(BLDLIBRARY)"
 fi
 
 # On iOS the shared libraries must be linked with the Python framework
@@ -6130,11 +6212,11 @@ fi
 
 
 AC_SUBST([BINLIBDEST])
-BINLIBDEST='$(LIBDIR)/python$(VERSION)'
+BINLIBDEST='$(LIBDIR)/python$(VERSION)$(ABI_THREAD)'
 
 
 # Check for --with-platlibdir
-# /usr/$LIDIRNAME/python$VERSION
+# /usr/$PLATLIBDIR/python$(VERSION)$(ABI_THREAD)
 AC_SUBST([PLATLIBDIR])
 PLATLIBDIR="lib"
 AC_MSG_CHECKING([for --with-platlibdir])
@@ -6153,7 +6235,7 @@ if test -n "$withval" -a "$withval" != yes -a "$withval" != no
 then
   AC_MSG_RESULT([yes])
   PLATLIBDIR="$withval"
-  BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)'
+  BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)$(ABI_THREAD)'
 else
   AC_MSG_RESULT([no])
 fi],
@@ -6163,9 +6245,9 @@ fi],
 dnl define LIBPL after ABIFLAGS and LDVERSION is defined.
 AC_SUBST([PY_ENABLE_SHARED])
 if test x$PLATFORM_TRIPLET = x; then
-  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}"
+  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}${ABI_THREAD}/config-${LDVERSION}"
 else
-  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
+  LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}${ABI_THREAD}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
 fi
 AC_SUBST([LIBPL])
 
@@ -6257,7 +6339,7 @@ AS_VAR_IF([with_readline], [readline], [
   ], [
     WITH_SAVE_ENV([
       CPPFLAGS="$CPPFLAGS $LIBREADLINE_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBREADLINE_LIBS"
+      LIBS="$LIBS $LIBREADLINE_LIBS"
       AC_CHECK_HEADERS([readline/readline.h], [
         AC_CHECK_LIB([readline], [readline], [
           LIBREADLINE=readline
@@ -6278,7 +6360,7 @@ AS_VAR_IF([with_readline], [edit], [
   ], [
     WITH_SAVE_ENV([
       CPPFLAGS="$CPPFLAGS $LIBEDIT_CFLAGS"
-      LDFLAGS="$LDFLAGS $LIBEDIT_LIBS"
+      LIBS="$LIBS $LIBEDIT_LIBS"
       AC_CHECK_HEADERS([editline/readline.h], [
         AC_CHECK_LIB([edit], [readline], [
           LIBREADLINE=edit
@@ -6302,7 +6384,7 @@ AS_VAR_IF([with_readline], [no], [
 
   WITH_SAVE_ENV([
     CPPFLAGS="$CPPFLAGS $READLINE_CFLAGS"
-    LIBS="$READLINE_LIBS $LIBS"
+    LIBS="$LIBS $READLINE_LIBS"
     LIBS_SAVE=$LIBS
 
     m4_define([readline_includes], [
@@ -6559,55 +6641,88 @@ then
   [Define if you have struct stat.st_mtimensec])
 fi
 
-dnl check for ncurses/ncursesw and panel/panelw
+dnl check for ncursesw/ncurses and panelw/panel
 dnl NOTE: old curses is not detected.
-dnl have_curses=[no, ncursesw, ncurses]
-dnl have_panel=[no, panelw, panel]
+dnl have_curses=[no, yes]
+dnl have_panel=[no, yes]
 have_curses=no
 have_panel=no
 
-AH_TEMPLATE([HAVE_NCURSESW], [Define to 1 if you have the `ncursesw' library.])
-AC_CHECK_HEADERS([curses.h ncurses.h])
+dnl PY_CHECK_CURSES(LIBCURSES, LIBPANEL)
+dnl Sets 'have_curses' and 'have_panel'.
+dnl For the PKG_CHECK_MODULES() calls, we can safely reuse the first variable
+dnl here, since we're only calling the macro a second time if the first call
+dnl fails.
+AC_DEFUN([PY_CHECK_CURSES], [dnl
+AS_VAR_PUSHDEF([curses_var], [m4_toupper([$1])])
+AS_VAR_PUSHDEF([panel_var], [m4_toupper([$2])])
+PKG_CHECK_MODULES([CURSES], [$1],
+  [AC_DEFINE([HAVE_]curses_var, [1], [Define if you have the '$1' library])
+   AS_VAR_SET([have_curses], [yes])
+   PKG_CHECK_MODULES([PANEL], [$2],
+    [AC_DEFINE([HAVE_]panel_var, [1], [Define if you have the '$2' library])
+     AS_VAR_SET([have_panel], [yes])],
+    [AS_VAR_SET([have_panel], [no])])],
+  [AS_VAR_SET([have_curses], [no])])
+AS_VAR_POPDEF([curses_var])
+AS_VAR_POPDEF([panel_var])])
+
+# Check for ncursesw/panelw first. If that fails, try ncurses/panel.
+PY_CHECK_CURSES([ncursesw], [panelw])
+AS_VAR_IF([have_curses], [no],
+          [PY_CHECK_CURSES([ncurses], [panel])])
 
-AS_VAR_IF([ac_cv_header_ncurses_h], [yes], [
-  if test "$ac_sys_system" != "Darwin"; then
-    dnl On macOS, there is no separate /usr/lib/libncursesw nor libpanelw.
-    PKG_CHECK_MODULES([CURSES], [ncursesw], [
-      AC_DEFINE([HAVE_NCURSESW], [1])
-      have_curses=ncursesw
-    ], [
-      WITH_SAVE_ENV([
-        AC_CHECK_LIB([ncursesw], [initscr], [
-          AC_DEFINE([HAVE_NCURSESW], [1])
-          have_curses=ncursesw
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncursesw"}
-        ])
-      ])
-    ])
-  fi
-
-  AS_VAR_IF([have_curses], [no], [
-    PKG_CHECK_MODULES([CURSES], [ncurses], [
-      have_curses=ncurses
-    ], [
-      WITH_SAVE_ENV([
-        AC_CHECK_LIB([ncurses], [initscr], [
-          have_curses=ncurses
-          CURSES_CFLAGS=${CURSES_CFLAGS-""}
-          CURSES_LIBS=${CURSES_LIBS-"-lncurses"}
-        ])
-      ])
-    ])
-  ])
+WITH_SAVE_ENV([
+  # Make sure we've got the header defines.
+  AS_VAR_APPEND([CPPFLAGS], [" $CURSES_CFLAGS $PANEL_CFLAGS"])
+  AC_CHECK_HEADERS(m4_normalize([
+    ncursesw/curses.h ncursesw/ncurses.h ncursesw/panel.h
+    ncurses/curses.h ncurses/ncurses.h ncurses/panel.h
+    curses.h ncurses.h panel.h
+  ]))
 
-])dnl ac_cv_header_ncurses_h = yes
+  # Check that we're able to link with crucial curses/panel functions. This
+  # also serves as a fallback in case pkg-config failed.
+  AS_VAR_APPEND([LIBS], [" $CURSES_LIBS $PANEL_LIBS"])
+  AC_SEARCH_LIBS([initscr], [ncursesw ncurses],
+    [AS_VAR_IF([have_curses], [no],
+      [AS_VAR_SET([have_curses], [yes])
+       CURSES_LIBS=${CURSES_LIBS-"$ac_cv_search_initscr"}])],
+    [AS_VAR_SET([have_curses], [no])])
+  AC_SEARCH_LIBS([update_panels], [panelw panel],
+    [AS_VAR_IF([have_panel], [no],
+      [AS_VAR_SET([have_panel], [yes])
+       PANEL_LIBS=${PANEL_LIBS-"$ac_cv_search_update_panels"}])],
+    [AS_VAR_SET([have_panel], [no])])
+
+dnl Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque
+dnl structs since version 5.7.  If the macro is defined as zero before including
+dnl [n]curses.h, ncurses will expose fields of the structs regardless of the
+dnl configuration.
+AC_DEFUN([_CURSES_INCLUDES],dnl
+[
+#define NCURSES_OPAQUE 0
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#  include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSESW_CURSES_H)
+#  include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#  include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#  include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#  include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#  include <curses.h>
+#endif
+])
 
+AS_IF([test "have_curses" != "no"], [
 dnl remove _XOPEN_SOURCE macro from curses cflags. pyconfig.h sets
 dnl the macro to 700.
 CURSES_CFLAGS=$(echo $CURSES_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-if test "$have_curses" != no -a "$ac_sys_system" = "Darwin"; then
+AS_VAR_IF([ac_sys_system], [Darwin], [
   dnl On macOS, there is no separate /usr/lib/libncursesw nor libpanelw.
   dnl System-supplied ncurses combines libncurses/libpanel and supports wide
   dnl characters, so we can use it like ncursesw.
@@ -6617,82 +6732,17 @@ if test "$have_curses" != no -a "$ac_sys_system" = "Darwin"; then
   dnl _XOPEN_SOURCE_EXTENDED here for ncurses wide char support.
 
   AS_VAR_APPEND([CURSES_CFLAGS], [" -D_XOPEN_SOURCE_EXTENDED=1"])
-  AC_DEFINE([HAVE_NCURSESW], [1])
-fi
-
-dnl TODO: detect "curses" and special cases tinfo, terminfo, or termcap
-
-AC_MSG_CHECKING([curses module flags])
-AS_VAR_IF([have_curses], [no], [
-  AC_MSG_RESULT([no])
-], [
-  AC_MSG_RESULT([$have_curses (CFLAGS: $CURSES_CFLAGS, LIBS: $CURSES_LIBS)])
 ])
 
-dnl check for ncurses' panel/panelw library
-AC_CHECK_HEADERS([panel.h])
-
-AS_VAR_IF([ac_cv_header_panel_h], [yes], [
-
-  if test "$ac_sys_system" != "Darwin"; then
-    dnl On macOS, there is no separate /usr/lib/libncursesw nor libpanelw.
-    AS_VAR_IF([have_curses], [ncursesw], [
-      PKG_CHECK_MODULES([PANEL], [panelw], [
-        have_panel=panelw
-      ], [
-        WITH_SAVE_ENV([
-          AC_CHECK_LIB([panelw], [update_panels], [
-            have_panel=panelw
-            PANEL_CFLAGS=${PANEL_CFLAGS-""}
-            PANEL_LIBS=${PANEL_LIBS-"-lpanelw"}
-          ])
-        ])
-      ])
-    ])
-  fi
-
-  AS_VAR_IF([have_curses], [ncurses], [
-    PKG_CHECK_MODULES([PANEL], [panel], [
-      have_panel=panel
-    ], [
-      WITH_SAVE_ENV([
-        AC_CHECK_LIB([panel], [update_panels], [
-          have_panel=panel
-          PANEL_CFLAGS=${PANEL_CFLAGS-""}
-          PANEL_LIBS=${PANEL_LIBS-"-lpanel"}
-        ])
-      ])
-    ])
-  ])
-
-])dnl ac_cv_header_panel_h = yes
-
 dnl pyconfig.h defines _XOPEN_SOURCE=700
 PANEL_CFLAGS=$(echo $PANEL_CFLAGS | sed 's/-D_XOPEN_SOURCE=600//g')
 
-AC_MSG_CHECKING([panel flags])
-AS_VAR_IF([have_panel], [no], [
-  AC_MSG_RESULT([no])
-], [
-  AC_MSG_RESULT([$have_panel (CFLAGS: $PANEL_CFLAGS, LIBS: $PANEL_LIBS)])
-])
-
-# first curses header check
-ac_save_cppflags="$CPPFLAGS"
-if test "$cross_compiling" = no; then
-  CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw"
-fi
-
 # On Solaris, term.h requires curses.h
-AC_CHECK_HEADERS([term.h], [], [], [
-#ifdef HAVE_CURSES_H
-#include <curses.h>
-#endif
-])
+AC_CHECK_HEADERS([term.h], [], [], _CURSES_INCLUDES)
 
 # On HP/UX 11.0, mvwdelch is a block with a return statement
 AC_CACHE_CHECK([whether mvwdelch is an expression], [ac_cv_mvwdelch_is_expression],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <curses.h>]], [[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(_CURSES_INCLUDES, [[
   int rtn;
   rtn = mvwdelch(0,0,0);
 ]])],
@@ -6705,15 +6755,8 @@ then
   [Define if mvwdelch in curses.h is an expression.])
 fi
 
-# Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque
-# structs since version 5.7.  If the macro is defined as zero before including
-# [n]curses.h, ncurses will expose fields of the structs regardless of the
-# configuration.
 AC_CACHE_CHECK([whether WINDOW has _flags], [ac_cv_window_has_flags],
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-  #define NCURSES_OPAQUE 0
-  #include <curses.h>
-]], [[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(_CURSES_INCLUDES, [[
   WINDOW *w;
   w->_flags = 0;
 ]])],
@@ -6735,11 +6778,7 @@ AC_DEFUN([PY_CHECK_CURSES_FUNC],
     [for curses function $1],
     [py_var],
     [AC_COMPILE_IFELSE(
-      [AC_LANG_PROGRAM(
-        [
-        #define NCURSES_OPAQUE 0
-        #include <curses.h>
-        ], [
+      [AC_LANG_PROGRAM(_CURSES_INCLUDES, [
         #ifndef $1
         void *x=$1
         #endif
@@ -6767,6 +6806,8 @@ PY_CHECK_CURSES_FUNC([has_key])
 PY_CHECK_CURSES_FUNC([typeahead])
 PY_CHECK_CURSES_FUNC([use_env])
 CPPFLAGS=$ac_save_cppflags
+])dnl have_curses != no
+])dnl save env
 
 AC_MSG_NOTICE([checking for device files])
 
@@ -7303,8 +7344,6 @@ AC_DEFINE([PY_SSL_DEFAULT_CIPHERS], [1])
 
 # builtin hash modules
 default_hashlib_hashes="md5,sha1,sha2,sha3,blake2"
-AC_DEFINE([PY_BUILTIN_HASHLIB_HASHES], [], [enabled builtin hash modules]
-)
 AC_MSG_CHECKING([for --with-builtin-hashlib-hashes])
 AC_ARG_WITH(
   [builtin-hashlib-hashes],
@@ -7321,7 +7360,8 @@ AC_ARG_WITH(
 
 AC_MSG_RESULT([$with_builtin_hashlib_hashes])
 AC_DEFINE_UNQUOTED([PY_BUILTIN_HASHLIB_HASHES],
-  ["$with_builtin_hashlib_hashes"])
+                   ["$with_builtin_hashlib_hashes"],
+                   [enabled builtin hash modules])
 
 as_save_IFS=$IFS
 IFS=,
@@ -7379,7 +7419,7 @@ CPPFLAGS="${BASECPPFLAGS} -I. -I${srcdir}/Include ${CPPFLAGS}"
 
 AC_CACHE_CHECK([whether libatomic is needed by <pyatomic.h>],
                [ac_cv_libatomic_needed],
-[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+[AC_LINK_IFELSE([AC_LANG_SOURCE([[
 // pyatomic.h needs uint64_t and Py_ssize_t types
 #include <stdint.h>  // int64_t, intptr_t
 #ifdef HAVE_SYS_TYPES_H
@@ -7416,9 +7456,8 @@ int main()
     return 0; // all good
 }
 ]])],
-  [ac_cv_libatomic_needed=no],  dnl build succeeded
-  [ac_cv_libatomic_needed=yes], dnl build failed
-  [ac_cv_libatomic_needed=no])  dnl cross compilation
+  [ac_cv_libatomic_needed=no],  dnl build and link succeeded
+  [ac_cv_libatomic_needed=yes]) dnl build and link failed
 ])
 
 AS_VAR_IF([ac_cv_libatomic_needed], [yes],
@@ -7684,11 +7723,11 @@ PY_STDLIB_MOD([_ctypes],
   [], [test "$have_libffi" = yes],
   [$NO_STRICT_OVERFLOW_CFLAGS $LIBFFI_CFLAGS], [$LIBFFI_LIBS])
 PY_STDLIB_MOD([_curses],
-  [], [test "$have_curses" != "no"],
+  [], [test "$have_curses" = "yes"],
   [$CURSES_CFLAGS], [$CURSES_LIBS]
 )
 PY_STDLIB_MOD([_curses_panel],
-  [], [test "$have_panel" != "no"],
+  [], [test "$have_curses" = "yes" && test "$have_panel" = "yes"],
   [$PANEL_CFLAGS $CURSES_CFLAGS], [$PANEL_LIBS $CURSES_LIBS]
 )
 PY_STDLIB_MOD([_decimal],
diff --git a/iOS/README.rst b/iOS/README.rst
index 96cb00eb2e9bfe..13b885144932e4 100644
--- a/iOS/README.rst
+++ b/iOS/README.rst
@@ -188,7 +188,7 @@ especially important, as many parts of the standard library (including the
 ``ctypes`` module at runtime.
 
 By default, Python will be compiled with an iOS deployment target (i.e., the
-minimum supported iOS version) of 12.0. To specify a different deployment
+minimum supported iOS version) of 13.0. To specify a different deployment
 target, provide the version number as part of the ``--host`` argument - for
 example, ``--host=arm64-apple-ios15.4-simulator`` would compile an ARM64
 simulator build with a deployment target of 15.4.
@@ -285,52 +285,42 @@ This will:
 * Install the Python iOS framework into the copy of the testbed project; and
 * Run the test suite on an "iPhone SE (3rd generation)" simulator.
 
-While the test suite is running, Xcode does not display any console output.
-After showing some Xcode build commands, the console output will print ``Testing
-started``, and then appear to stop. It will remain in this state until the test
-suite completes. On a 2022 M1 MacBook Pro, the test suite takes approximately 12
-minutes to run; a couple of extra minutes is required to boot and prepare the
-iOS simulator.
-
 On success, the test suite will exit and report successful completion of the
-test suite. No output of the Python test suite will be displayed.
-
-On failure, the output of the Python test suite *will* be displayed. This will
-show the details of the tests that failed.
+test suite. On a 2022 M1 MacBook Pro, the test suite takes approximately 15
+minutes to run; a couple of extra minutes is required to compile the testbed
+project, and then boot and prepare the iOS simulator.
 
 Debugging test failures
 -----------------------
 
-The easiest way to diagnose a single test failure is to open the testbed project
-in Xcode and run the tests from there using the "Product > Test" menu item.
-
-To test in Xcode, you must ensure the testbed project has a copy of a compiled
-framework. If you've configured your build with the default install location of
-``iOS/Frameworks``, you can copy from that location into the test project. To
-test on an ARM64 simulator, run::
-
-    $ rm -rf iOS/testbed/Python.xcframework/ios-arm64_x86_64-simulator/*
-    $ cp -r iOS/Frameworks/arm64-iphonesimulator/* iOS/testbed/Python.xcframework/ios-arm64_x86_64-simulator
+Running ``make test`` generates a standalone version of the ``iOS/testbed``
+project, and runs the full test suite. It does this using ``iOS/testbed``
+itself - the folder is an executable module that can be used to create and run
+a clone of the testbed project.
 
-To test on an x86-64 simulator, run::
+You can generate your own standalone testbed instance by running::
 
-    $ rm -rf iOS/testbed/Python.xcframework/ios-arm64_x86_64-simulator/*
-    $ cp -r iOS/Frameworks/x86_64-iphonesimulator/* iOS/testbed/Python.xcframework/ios-arm64_x86_64-simulator
+    $ python iOS/testbed clone --framework iOS/Frameworks/arm64-iphonesimulator my-testbed
 
-To test on a physical device::
+This invocation assumes that ``iOS/Frameworks/arm64-iphonesimulator`` is the
+path to the iOS simulator framework for your platform (ARM64 in this case);
+``my-testbed`` is the name of the folder for the new testbed clone.
 
-    $ rm -rf iOS/testbed/Python.xcframework/ios-arm64/*
-    $ cp -r iOS/Frameworks/arm64-iphoneos/* iOS/testbed/Python.xcframework/ios-arm64
+You can then use the ``my-testbed`` folder to run the Python test suite,
+passing in any command line arguments you may require. For example, if you're
+trying to diagnose a failure in the ``os`` module, you might run::
 
-Alternatively, you can configure your build to install directly into the
-testbed project. For a simulator, use::
+    $ python my-testbed run -- test -W test_os
 
-    --enable-framework=$(pwd)/iOS/testbed/Python.xcframework/ios-arm64_x86_64-simulator
+This is the equivalent of running ``python -m test -W test_os`` on a desktop
+Python build. Any arguments after the ``--`` will be passed to testbed as if
+they were arguments to ``python -m`` on a desktop machine.
 
-For a physical device, use::
+You can also open the testbed project in Xcode by running::
 
-    --enable-framework=$(pwd)/iOS/testbed/Python.xcframework/ios-arm64
+    $ open my-testbed/iOSTestbed.xcodeproj
 
+This will allow you to use the full Xcode suite of tools for debugging.
 
 Testing on an iOS device
 ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -351,13 +341,13 @@ Running specific tests
 ^^^^^^^^^^^^^^^^^^^^^^
 
 As the test suite is being executed on an iOS simulator, it is not possible to
-pass in command line arguments to configure test suite operation. To work around
-this limitation, the arguments that would normally be passed as command line
-arguments are configured as a static string at the start of the XCTest method
-``- (void)testPython`` in ``iOSTestbedTests.m``. To pass an argument to the test
-suite, add a a string to the ``argv`` definition. These arguments will be passed
-to the test suite as if they had been passed to ``python -m test`` at the
-command line.
+pass in command line arguments to configure test suite operation. To work
+around this limitation, the arguments that would normally be passed as command
+line arguments are configured as part of the ``iOSTestbed-Info.plist`` file
+that is used to configure the iOS testbed app. In this file, the ``TestArgs``
+key is an array containing the arguments that would be passed to ``python -m``
+on the command line (including ``test`` in position 0, the name of the test
+module to be executed).
 
 Disabling automated breakpoints
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/iOS/Resources/bin/arm64-apple-ios-ar b/iOS/Resources/bin/arm64-apple-ios-ar
index 8122332b9c1de0..3cf3eb218741fa 100755
--- a/iOS/Resources/bin/arm64-apple-ios-ar
+++ b/iOS/Resources/bin/arm64-apple-ios-ar
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphoneos${IOS_SDK_VERSION} ar $@
+xcrun --sdk iphoneos${IOS_SDK_VERSION} ar "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-clang b/iOS/Resources/bin/arm64-apple-ios-clang
index 4d525751eba798..c39519cd1f8c94 100755
--- a/iOS/Resources/bin/arm64-apple-ios-clang
+++ b/iOS/Resources/bin/arm64-apple-ios-clang
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphoneos${IOS_SDK_VERSION} clang -target arm64-apple-ios $@
+xcrun --sdk iphoneos${IOS_SDK_VERSION} clang -target arm64-apple-ios "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-clang++ b/iOS/Resources/bin/arm64-apple-ios-clang++
new file mode 100755
index 00000000000000..d9b12925f384b9
--- /dev/null
+++ b/iOS/Resources/bin/arm64-apple-ios-clang++
@@ -0,0 +1,2 @@
+#!/bin/sh
+xcrun --sdk iphoneos${IOS_SDK_VERSION} clang++ -target arm64-apple-ios "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-cpp b/iOS/Resources/bin/arm64-apple-ios-cpp
index 891bb25bb4318c..24da23d3448ae0 100755
--- a/iOS/Resources/bin/arm64-apple-ios-cpp
+++ b/iOS/Resources/bin/arm64-apple-ios-cpp
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphoneos${IOS_SDK_VERSION} clang -target arm64-apple-ios -E $@
+xcrun --sdk iphoneos${IOS_SDK_VERSION} clang -target arm64-apple-ios -E "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-simulator-ar b/iOS/Resources/bin/arm64-apple-ios-simulator-ar
index 74ed3bc6df1c2b..b836b6db9025bb 100755
--- a/iOS/Resources/bin/arm64-apple-ios-simulator-ar
+++ b/iOS/Resources/bin/arm64-apple-ios-simulator-ar
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} ar $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} ar "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-simulator-clang b/iOS/Resources/bin/arm64-apple-ios-simulator-clang
index 32574cad284441..92e8d853d6ebc3 100755
--- a/iOS/Resources/bin/arm64-apple-ios-simulator-clang
+++ b/iOS/Resources/bin/arm64-apple-ios-simulator-clang
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target arm64-apple-ios-simulator $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target arm64-apple-ios-simulator "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-simulator-clang++ b/iOS/Resources/bin/arm64-apple-ios-simulator-clang++
new file mode 100755
index 00000000000000..076469cc70cf98
--- /dev/null
+++ b/iOS/Resources/bin/arm64-apple-ios-simulator-clang++
@@ -0,0 +1,2 @@
+#!/bin/sh
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang++ -target arm64-apple-ios-simulator "$@"
diff --git a/iOS/Resources/bin/arm64-apple-ios-simulator-cpp b/iOS/Resources/bin/arm64-apple-ios-simulator-cpp
index 6aaf6fbe188c32..c57f28cee5bcfe 100755
--- a/iOS/Resources/bin/arm64-apple-ios-simulator-cpp
+++ b/iOS/Resources/bin/arm64-apple-ios-simulator-cpp
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target arm64-apple-ios-simulator -E $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target arm64-apple-ios-simulator -E "$@"
diff --git a/iOS/Resources/bin/x86_64-apple-ios-simulator-ar b/iOS/Resources/bin/x86_64-apple-ios-simulator-ar
index 74ed3bc6df1c2b..b836b6db9025bb 100755
--- a/iOS/Resources/bin/x86_64-apple-ios-simulator-ar
+++ b/iOS/Resources/bin/x86_64-apple-ios-simulator-ar
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} ar $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} ar "$@"
diff --git a/iOS/Resources/bin/x86_64-apple-ios-simulator-clang b/iOS/Resources/bin/x86_64-apple-ios-simulator-clang
index bcbe91f6061e16..17cbe0c8a1e213 100755
--- a/iOS/Resources/bin/x86_64-apple-ios-simulator-clang
+++ b/iOS/Resources/bin/x86_64-apple-ios-simulator-clang
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target x86_64-apple-ios-simulator $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target x86_64-apple-ios-simulator "$@"
diff --git a/iOS/Resources/bin/x86_64-apple-ios-simulator-clang++ b/iOS/Resources/bin/x86_64-apple-ios-simulator-clang++
new file mode 100755
index 00000000000000..565d47b24c214b
--- /dev/null
+++ b/iOS/Resources/bin/x86_64-apple-ios-simulator-clang++
@@ -0,0 +1,2 @@
+#!/bin/sh
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang++ -target x86_64-apple-ios-simulator "$@"
diff --git a/iOS/Resources/bin/x86_64-apple-ios-simulator-cpp b/iOS/Resources/bin/x86_64-apple-ios-simulator-cpp
index e6a42d9b85dec7..63fc8e8de2d38d 100755
--- a/iOS/Resources/bin/x86_64-apple-ios-simulator-cpp
+++ b/iOS/Resources/bin/x86_64-apple-ios-simulator-cpp
@@ -1,2 +1,2 @@
 #!/bin/sh
-xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target x86_64-apple-ios-simulator -E $@
+xcrun --sdk iphonesimulator${IOS_SDK_VERSION} clang -target x86_64-apple-ios-simulator -E "$@"
diff --git a/iOS/testbed/__main__.py b/iOS/testbed/__main__.py
new file mode 100644
index 00000000000000..b4499f5ac171a8
--- /dev/null
+++ b/iOS/testbed/__main__.py
@@ -0,0 +1,410 @@
+import argparse
+import asyncio
+import json
+import plistlib
+import re
+import shutil
+import subprocess
+import sys
+from contextlib import asynccontextmanager
+from datetime import datetime
+from pathlib import Path
+
+
+DECODE_ARGS = ("UTF-8", "backslashreplace")
+
+# The system log prefixes each line:
+#   2025-01-17 16:14:29.090 Df iOSTestbed[23987:1fd393b4] (Python) ...
+#   2025-01-17 16:14:29.090 E  iOSTestbed[23987:1fd393b4] (Python) ...
+
+LOG_PREFIX_REGEX = re.compile(
+    r"^\d{4}-\d{2}-\d{2}"  # YYYY-MM-DD
+    r"\s+\d+:\d{2}:\d{2}\.\d+"  # HH:MM:SS.sss
+    r"\s+\w+"  # Df/E
+    r"\s+iOSTestbed\[\d+:\w+\]"  # Process/thread ID
+    r"\s+\(Python\)\s"  # Logger name
+)
+
+
+# Work around a bug involving sys.exit and TaskGroups
+# (https://github.com/python/cpython/issues/101515).
+def exit(*args):
+    raise MySystemExit(*args)
+
+
+class MySystemExit(Exception):
+    pass
+
+
+# All subprocesses are executed through this context manager so that no matter
+# what happens, they can always be cancelled from another task, and they will
+# always be cleaned up on exit.
+@asynccontextmanager
+async def async_process(*args, **kwargs):
+    process = await asyncio.create_subprocess_exec(*args, **kwargs)
+    try:
+        yield process
+    finally:
+        if process.returncode is None:
+            # Allow a reasonably long time for Xcode to clean itself up,
+            # because we don't want stale emulators left behind.
+            timeout = 10
+            process.terminate()
+            try:
+                await asyncio.wait_for(process.wait(), timeout)
+            except TimeoutError:
+                print(
+                    f"Command {args} did not terminate after {timeout} seconds "
+                    f" - sending SIGKILL"
+                )
+                process.kill()
+
+                # Even after killing the process we must still wait for it,
+                # otherwise we'll get the warning "Exception ignored in __del__".
+                await asyncio.wait_for(process.wait(), timeout=1)
+
+
+async def async_check_output(*args, **kwargs):
+    async with async_process(
+        *args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs
+    ) as process:
+        stdout, stderr = await process.communicate()
+        if process.returncode == 0:
+            return stdout.decode(*DECODE_ARGS)
+        else:
+            raise subprocess.CalledProcessError(
+                process.returncode,
+                args,
+                stdout.decode(*DECODE_ARGS),
+                stderr.decode(*DECODE_ARGS),
+            )
+
+
+# Return a list of UDIDs associated with booted simulators
+async def list_devices():
+    # List the testing simulators, in JSON format
+    raw_json = await async_check_output(
+        "xcrun", "simctl", "--set", "testing", "list", "-j"
+    )
+    json_data = json.loads(raw_json)
+
+    # Filter out the booted iOS simulators
+    return [
+        simulator["udid"]
+        for runtime, simulators in json_data["devices"].items()
+        for simulator in simulators
+        if runtime.split(".")[-1].startswith("iOS") and simulator["state"] == "Booted"
+    ]
+
+
+async def find_device(initial_devices):
+    while True:
+        new_devices = set(await list_devices()).difference(initial_devices)
+        if len(new_devices) == 0:
+            await asyncio.sleep(1)
+        elif len(new_devices) == 1:
+            udid = new_devices.pop()
+            print(f"{datetime.now():%Y-%m-%d %H:%M:%S}: New test simulator detected")
+            print(f"UDID: {udid}")
+            return udid
+        else:
+            exit(f"Found more than one new device: {new_devices}")
+
+
+async def log_stream_task(initial_devices):
+    # Wait up to 5 minutes for the build to complete and the simulator to boot.
+    udid = await asyncio.wait_for(find_device(initial_devices), 5 * 60)
+
+    # Stream the iOS device's logs, filtering out messages that come from the
+    # XCTest test suite (catching NSLog messages from the test method), or
+    # Python itself (catching stdout/stderr content routed to the system log
+    # with config->use_system_logger).
+    args = [
+        "xcrun",
+        "simctl",
+        "--set",
+        "testing",
+        "spawn",
+        udid,
+        "log",
+        "stream",
+        "--style",
+        "compact",
+        "--predicate",
+        (
+            'senderImagePath ENDSWITH "/iOSTestbedTests.xctest/iOSTestbedTests"'
+            ' OR senderImagePath ENDSWITH "/Python.framework/Python"'
+        ),
+    ]
+
+    async with async_process(
+        *args,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT,
+    ) as process:
+        suppress_dupes = False
+        while line := (await process.stdout.readline()).decode(*DECODE_ARGS):
+            # Strip the prefix from each log line
+            line = LOG_PREFIX_REGEX.sub("", line)
+            # The iOS log streamer can sometimes lag; when it does, it outputs
+            # a warning about messages being dropped... often multiple times.
+            # Only print the first of these duplicated warnings.
+            if line.startswith("=== Messages dropped "):
+                if not suppress_dupes:
+                    suppress_dupes = True
+                    sys.stdout.write(line)
+            else:
+                suppress_dupes = False
+                sys.stdout.write(line)
+            sys.stdout.flush()
+
+
+async def xcode_test(location, simulator, verbose):
+    # Run the test suite on the named simulator
+    print("Starting xcodebuild...")
+    args = [
+        "xcodebuild",
+        "test",
+        "-project",
+        str(location / "iOSTestbed.xcodeproj"),
+        "-scheme",
+        "iOSTestbed",
+        "-destination",
+        f"platform=iOS Simulator,name={simulator}",
+        "-resultBundlePath",
+        str(location / f"{datetime.now():%Y%m%d-%H%M%S}.xcresult"),
+        "-derivedDataPath",
+        str(location / "DerivedData"),
+    ]
+    if not verbose:
+        args += ["-quiet"]
+
+    async with async_process(
+        *args,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT,
+    ) as process:
+        while line := (await process.stdout.readline()).decode(*DECODE_ARGS):
+            sys.stdout.write(line)
+            sys.stdout.flush()
+
+        status = await asyncio.wait_for(process.wait(), timeout=1)
+        exit(status)
+
+
+def clone_testbed(
+    source: Path,
+    target: Path,
+    framework: Path,
+    apps: list[Path],
+) -> None:
+    if target.exists():
+        print(f"{target} already exists; aborting without creating project.")
+        sys.exit(10)
+
+    if framework is None:
+        if not (
+            source / "Python.xcframework/ios-arm64_x86_64-simulator/bin"
+        ).is_dir():
+            print(
+                f"The testbed being cloned ({source}) does not contain "
+                f"a simulator framework. Re-run with --framework"
+            )
+            sys.exit(11)
+    else:
+        if not framework.is_dir():
+            print(f"{framework} does not exist.")
+            sys.exit(12)
+        elif not (
+            framework.suffix == ".xcframework"
+            or (framework / "Python.framework").is_dir()
+        ):
+            print(
+                f"{framework} is not an XCframework, "
+                f"or a simulator slice of a framework build."
+            )
+            sys.exit(13)
+
+    print("Cloning testbed project:")
+    print(f"  Cloning {source}...", end="", flush=True)
+    shutil.copytree(source, target, symlinks=True)
+    print(" done")
+
+    if framework is not None:
+        if framework.suffix == ".xcframework":
+            print("  Installing XCFramework...", end="", flush=True)
+            xc_framework_path = (target / "Python.xcframework").resolve()
+            if xc_framework_path.is_dir():
+                shutil.rmtree(xc_framework_path)
+            else:
+                xc_framework_path.unlink()
+            xc_framework_path.symlink_to(
+                framework.relative_to(xc_framework_path.parent, walk_up=True)
+            )
+            print(" done")
+        else:
+            print("  Installing simulator framework...", end="", flush=True)
+            sim_framework_path = (
+                target / "Python.xcframework" / "ios-arm64_x86_64-simulator"
+            ).resolve()
+            if sim_framework_path.is_dir():
+                shutil.rmtree(sim_framework_path)
+            else:
+                sim_framework_path.unlink()
+            sim_framework_path.symlink_to(
+                framework.relative_to(sim_framework_path.parent, walk_up=True)
+            )
+            print(" done")
+    else:
+        print("  Using pre-existing iOS framework.")
+
+    for app_src in apps:
+        print(f"  Installing app {app_src.name!r}...", end="", flush=True)
+        app_target = target / f"iOSTestbed/app/{app_src.name}"
+        if app_target.is_dir():
+            shutil.rmtree(app_target)
+        shutil.copytree(app_src, app_target)
+        print(" done")
+
+    print(f"Successfully cloned testbed: {target.resolve()}")
+
+
+def update_plist(testbed_path, args):
+    # Add the test runner arguments to the testbed's Info.plist file.
+    info_plist = testbed_path / "iOSTestbed" / "iOSTestbed-Info.plist"
+    with info_plist.open("rb") as f:
+        info = plistlib.load(f)
+
+    info["TestArgs"] = args
+
+    with info_plist.open("wb") as f:
+        plistlib.dump(info, f)
+
+
+async def run_testbed(simulator: str, args: list[str], verbose: bool=False):
+    location = Path(__file__).parent
+    print("Updating plist...", end="", flush=True)
+    update_plist(location, args)
+    print(" done.")
+
+    # Get the list of devices that are booted at the start of the test run.
+    # The simulator started by the test suite will be detected as the new
+    # entry that appears on the device list.
+    initial_devices = await list_devices()
+
+    try:
+        async with asyncio.TaskGroup() as tg:
+            tg.create_task(log_stream_task(initial_devices))
+            tg.create_task(xcode_test(location, simulator=simulator, verbose=verbose))
+    except* MySystemExit as e:
+        raise SystemExit(*e.exceptions[0].args) from None
+    except* subprocess.CalledProcessError as e:
+        # Extract it from the ExceptionGroup so it can be handled by `main`.
+        raise e.exceptions[0]
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description=(
+            "Manages the process of testing a Python project in the iOS simulator."
+        ),
+    )
+
+    subcommands = parser.add_subparsers(dest="subcommand")
+
+    clone = subcommands.add_parser(
+        "clone",
+        description=(
+            "Clone the testbed project, copying in an iOS Python framework and"
+            "any specified application code."
+        ),
+        help="Clone a testbed project to a new location.",
+    )
+    clone.add_argument(
+        "--framework",
+        help=(
+            "The location of the XCFramework (or simulator-only slice of an "
+            "XCFramework) to use when running the testbed"
+        ),
+    )
+    clone.add_argument(
+        "--app",
+        dest="apps",
+        action="append",
+        default=[],
+        help="The location of any code to include in the testbed project",
+    )
+    clone.add_argument(
+        "location",
+        help="The path where the testbed will be cloned.",
+    )
+
+    run = subcommands.add_parser(
+        "run",
+        usage="%(prog)s [-h] [--simulator SIMULATOR] -- <test arg> [<test arg> ...]",
+        description=(
+            "Run a testbed project. The arguments provided after `--` will be "
+            "passed to the running iOS process as if they were arguments to "
+            "`python -m`."
+        ),
+        help="Run a testbed project",
+    )
+    run.add_argument(
+        "--simulator",
+        default="iPhone SE (3rd Generation)",
+        help="The name of the simulator to use (default: 'iPhone SE (3rd Generation)')",
+    )
+    run.add_argument(
+        "-v", "--verbose",
+        action="store_true",
+        help="Enable verbose output",
+    )
+
+    try:
+        pos = sys.argv.index("--")
+        testbed_args = sys.argv[1:pos]
+        test_args = sys.argv[pos + 1 :]
+    except ValueError:
+        testbed_args = sys.argv[1:]
+        test_args = []
+
+    context = parser.parse_args(testbed_args)
+
+    if context.subcommand == "clone":
+        clone_testbed(
+            source=Path(__file__).parent,
+            target=Path(context.location),
+            framework=Path(context.framework).resolve() if context.framework else None,
+            apps=[Path(app) for app in context.apps],
+        )
+    elif context.subcommand == "run":
+        if test_args:
+            if not (
+                Path(__file__).parent / "Python.xcframework/ios-arm64_x86_64-simulator/bin"
+            ).is_dir():
+                print(
+                    f"Testbed does not contain a compiled iOS framework. Use "
+                    f"`python {sys.argv[0]} clone ...` to create a runnable "
+                    f"clone of this testbed."
+                )
+                sys.exit(20)
+
+            asyncio.run(
+                run_testbed(
+                    simulator=context.simulator,
+                    verbose=context.verbose,
+                    args=test_args,
+                )
+            )
+        else:
+            print(f"Must specify test arguments (e.g., {sys.argv[0]} run -- test)")
+            print()
+            parser.print_help(sys.stderr)
+            sys.exit(21)
+    else:
+        parser.print_help(sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/iOS/testbed/iOSTestbed.xcodeproj/project.pbxproj b/iOS/testbed/iOSTestbed.xcodeproj/project.pbxproj
index d57cfc3dbe0304..c7d63909ee2453 100644
--- a/iOS/testbed/iOSTestbed.xcodeproj/project.pbxproj
+++ b/iOS/testbed/iOSTestbed.xcodeproj/project.pbxproj
@@ -17,6 +17,8 @@
 		607A66502B0EFFE00010BFC8 /* Python.xcframework in Frameworks */ = {isa = PBXBuildFile; fileRef = 607A664A2B0EFB310010BFC8 /* Python.xcframework */; };
 		607A66512B0EFFE00010BFC8 /* Python.xcframework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 607A664A2B0EFB310010BFC8 /* Python.xcframework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		607A66582B0F079F0010BFC8 /* dylib-Info-template.plist in Resources */ = {isa = PBXBuildFile; fileRef = 607A66572B0F079F0010BFC8 /* dylib-Info-template.plist */; };
+		608619542CB77BA900F46182 /* app_packages in Resources */ = {isa = PBXBuildFile; fileRef = 608619532CB77BA900F46182 /* app_packages */; };
+		608619562CB7819B00F46182 /* app in Resources */ = {isa = PBXBuildFile; fileRef = 608619552CB7819B00F46182 /* app */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -66,6 +68,8 @@
 		607A664A2B0EFB310010BFC8 /* Python.xcframework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcframework; path = Python.xcframework; sourceTree = "<group>"; };
 		607A66572B0F079F0010BFC8 /* dylib-Info-template.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "dylib-Info-template.plist"; sourceTree = "<group>"; };
 		607A66592B0F08600010BFC8 /* iOSTestbed-Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "iOSTestbed-Info.plist"; sourceTree = "<group>"; };
+		608619532CB77BA900F46182 /* app_packages */ = {isa = PBXFileReference; lastKnownFileType = folder; path = app_packages; sourceTree = "<group>"; };
+		608619552CB7819B00F46182 /* app */ = {isa = PBXFileReference; lastKnownFileType = folder; path = app; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -111,6 +115,8 @@
 		607A66142B0EFA380010BFC8 /* iOSTestbed */ = {
 			isa = PBXGroup;
 			children = (
+				608619552CB7819B00F46182 /* app */,
+				608619532CB77BA900F46182 /* app_packages */,
 				607A66592B0F08600010BFC8 /* iOSTestbed-Info.plist */,
 				607A66572B0F079F0010BFC8 /* dylib-Info-template.plist */,
 				607A66152B0EFA380010BFC8 /* AppDelegate.h */,
@@ -223,7 +229,9 @@
 			files = (
 				607A66252B0EFA390010BFC8 /* LaunchScreen.storyboard in Resources */,
 				607A66582B0F079F0010BFC8 /* dylib-Info-template.plist in Resources */,
+				608619562CB7819B00F46182 /* app in Resources */,
 				607A66222B0EFA390010BFC8 /* Assets.xcassets in Resources */,
+				608619542CB77BA900F46182 /* app_packages in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -255,6 +263,7 @@
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "set -e\n\nmkdir -p \"$CODESIGNING_FOLDER_PATH/python/lib\"\nif [ \"$EFFECTIVE_PLATFORM_NAME\" = \"-iphonesimulator\" ]; then\n    echo \"Installing Python modules for iOS Simulator\"\n    rsync -au --delete \"$PROJECT_DIR/Python.xcframework/ios-arm64_x86_64-simulator/lib/\" \"$CODESIGNING_FOLDER_PATH/python/lib/\" \nelse\n    echo \"Installing Python modules for iOS Device\"\n    rsync -au --delete \"$PROJECT_DIR/Python.xcframework/ios-arm64/lib/\" \"$CODESIGNING_FOLDER_PATH/python/lib/\" \nfi\n";
+			showEnvVarsInLog = 0;
 		};
 		607A66562B0F06200010BFC8 /* Prepare Python Binary Modules */ = {
 			isa = PBXShellScriptBuildPhase;
@@ -273,7 +282,8 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "set -e\n\ninstall_dylib () {\n    INSTALL_BASE=$1\n    FULL_EXT=$2\n\n    # The name of the extension file\n    EXT=$(basename \"$FULL_EXT\")\n    # The location of the extension file, relative to the bundle\n    RELATIVE_EXT=${FULL_EXT#$CODESIGNING_FOLDER_PATH/} \n    # The path to the extension file, relative to the install base\n    PYTHON_EXT=${RELATIVE_EXT/$INSTALL_BASE/}\n    # The full dotted name of the extension module, constructed from the file path.\n    FULL_MODULE_NAME=$(echo $PYTHON_EXT | cut -d \".\" -f 1 | tr \"/\" \".\"); \n    # A bundle identifier; not actually used, but required by Xcode framework packaging\n    FRAMEWORK_BUNDLE_ID=$(echo $PRODUCT_BUNDLE_IDENTIFIER.$FULL_MODULE_NAME | tr \"_\" \"-\")\n    # The name of the framework folder.\n    FRAMEWORK_FOLDER=\"Frameworks/$FULL_MODULE_NAME.framework\"\n\n    # If the framework folder doesn't exist, create it.\n    if [ ! -d \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\" ]; then\n        echo \"Creating framework for $RELATIVE_EXT\" \n        mkdir -p \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\"\n        cp \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n        plutil -replace CFBundleExecutable -string \"$FULL_MODULE_NAME\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n        plutil -replace CFBundleIdentifier -string \"$FRAMEWORK_BUNDLE_ID\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n    fi\n    \n    echo \"Installing binary for $FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" \n    mv \"$FULL_EXT\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\"\n    # Create a placeholder .fwork file where the .so was\n    echo \"$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" > ${FULL_EXT%.so}.fwork\n    # Create a back reference to the .so file location in the framework\n    echo \"${RELATIVE_EXT%.so}.fwork\" > \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME.origin\"             \n}\n\nPYTHON_VER=$(ls -1 \"$CODESIGNING_FOLDER_PATH/python/lib\")\necho \"Install Python $PYTHON_VER standard library extension modules...\"\nfind \"$CODESIGNING_FOLDER_PATH/python/lib/$PYTHON_VER/lib-dynload\" -name \"*.so\" | while read FULL_EXT; do\n    install_dylib python/lib/$PYTHON_VER/lib-dynload/ \"$FULL_EXT\"\ndone\n\n# Clean up dylib template \nrm -f \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\"\necho \"Signing frameworks as $EXPANDED_CODE_SIGN_IDENTITY_NAME ($EXPANDED_CODE_SIGN_IDENTITY)...\"\nfind \"$CODESIGNING_FOLDER_PATH/Frameworks\" -name \"*.framework\" -exec /usr/bin/codesign --force --sign \"$EXPANDED_CODE_SIGN_IDENTITY\" ${OTHER_CODE_SIGN_FLAGS:-} -o runtime --timestamp=none --preserve-metadata=identifier,entitlements,flags --generate-entitlement-der \"{}\" \\; \n";
+			shellScript = "set -e\n\ninstall_dylib () {\n    INSTALL_BASE=$1\n    FULL_EXT=$2\n\n    # The name of the extension file\n    EXT=$(basename \"$FULL_EXT\")\n    # The location of the extension file, relative to the bundle\n    RELATIVE_EXT=${FULL_EXT#$CODESIGNING_FOLDER_PATH/} \n    # The path to the extension file, relative to the install base\n    PYTHON_EXT=${RELATIVE_EXT/$INSTALL_BASE/}\n    # The full dotted name of the extension module, constructed from the file path.\n    FULL_MODULE_NAME=$(echo $PYTHON_EXT | cut -d \".\" -f 1 | tr \"/\" \".\"); \n    # A bundle identifier; not actually used, but required by Xcode framework packaging\n    FRAMEWORK_BUNDLE_ID=$(echo $PRODUCT_BUNDLE_IDENTIFIER.$FULL_MODULE_NAME | tr \"_\" \"-\")\n    # The name of the framework folder.\n    FRAMEWORK_FOLDER=\"Frameworks/$FULL_MODULE_NAME.framework\"\n\n    # If the framework folder doesn't exist, create it.\n    if [ ! -d \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\" ]; then\n        echo \"Creating framework for $RELATIVE_EXT\" \n        mkdir -p \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER\"\n        cp \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n        plutil -replace CFBundleExecutable -string \"$FULL_MODULE_NAME\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n        plutil -replace CFBundleIdentifier -string \"$FRAMEWORK_BUNDLE_ID\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/Info.plist\"\n    fi\n    \n    echo \"Installing binary for $FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" \n    mv \"$FULL_EXT\" \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\"\n    # Create a placeholder .fwork file where the .so was\n    echo \"$FRAMEWORK_FOLDER/$FULL_MODULE_NAME\" > ${FULL_EXT%.so}.fwork\n    # Create a back reference to the .so file location in the framework\n    echo \"${RELATIVE_EXT%.so}.fwork\" > \"$CODESIGNING_FOLDER_PATH/$FRAMEWORK_FOLDER/$FULL_MODULE_NAME.origin\"             \n}\n\nPYTHON_VER=$(ls -1 \"$CODESIGNING_FOLDER_PATH/python/lib\")\necho \"Install Python $PYTHON_VER standard library extension modules...\"\nfind \"$CODESIGNING_FOLDER_PATH/python/lib/$PYTHON_VER/lib-dynload\" -name \"*.so\" | while read FULL_EXT; do\n    install_dylib python/lib/$PYTHON_VER/lib-dynload/ \"$FULL_EXT\"\ndone\necho \"Install app package extension modules...\"\nfind \"$CODESIGNING_FOLDER_PATH/app_packages\" -name \"*.so\" | while read FULL_EXT; do\n    install_dylib app_packages/ \"$FULL_EXT\"\ndone\necho \"Install app extension modules...\"\nfind \"$CODESIGNING_FOLDER_PATH/app\" -name \"*.so\" | while read FULL_EXT; do\n    install_dylib app/ \"$FULL_EXT\"\ndone\n\n# Clean up dylib template \nrm -f \"$CODESIGNING_FOLDER_PATH/dylib-Info-template.plist\"\necho \"Signing frameworks as $EXPANDED_CODE_SIGN_IDENTITY_NAME ($EXPANDED_CODE_SIGN_IDENTITY)...\"\nfind \"$CODESIGNING_FOLDER_PATH/Frameworks\" -name \"*.framework\" -exec /usr/bin/codesign --force --sign \"$EXPANDED_CODE_SIGN_IDENTITY\" ${OTHER_CODE_SIGN_FLAGS:-} -o runtime --timestamp=none --preserve-metadata=identifier,entitlements,flags --generate-entitlement-der \"{}\" \\; \n";
+			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
 
diff --git a/iOS/testbed/iOSTestbed/app/README b/iOS/testbed/iOSTestbed/app/README
new file mode 100644
index 00000000000000..af22c685f87976
--- /dev/null
+++ b/iOS/testbed/iOSTestbed/app/README
@@ -0,0 +1,7 @@
+This folder can contain any Python application code.
+
+During the build, any binary modules found in this folder will be processed into
+iOS Framework form.
+
+When the test suite runs, this folder will be on the PYTHONPATH, and will be the
+working directory for the test suite.
diff --git a/iOS/testbed/iOSTestbed/app_packages/README b/iOS/testbed/iOSTestbed/app_packages/README
new file mode 100644
index 00000000000000..42d7fdeb813250
--- /dev/null
+++ b/iOS/testbed/iOSTestbed/app_packages/README
@@ -0,0 +1,7 @@
+This folder can be a target for installing any Python dependencies needed by the
+test suite.
+
+During the build, any binary modules found in this folder will be processed into
+iOS Framework form.
+
+When the test suite runs, this folder will be on the PYTHONPATH.
diff --git a/iOS/testbed/iOSTestbed/iOSTestbed-Info.plist b/iOS/testbed/iOSTestbed/iOSTestbed-Info.plist
index e2aa460b6fd5ee..a582f42a212783 100644
--- a/iOS/testbed/iOSTestbed/iOSTestbed-Info.plist
+++ b/iOS/testbed/iOSTestbed/iOSTestbed-Info.plist
@@ -41,8 +41,18 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
-	<key>MainModule</key>
-	<string>ios</string>
+	<key>TestArgs</key>
+	<array>
+		<string>test</string> <!-- Invoke "python -m test" -->
+        <string>-uall</string> <!-- Enable all resources -->
+        <string>--single-process</string> <!-- always run all tests sequentially in a single process -->
+        <string>--rerun</string> <!-- Re-run failed tests in verbose mode -->
+        <string>-W</string> <!-- Display test output on failure -->
+		<!-- To run a subset of tests, add the test names below; e.g.,
+        <string>test_os</string>
+        <string>test_sys</string>
+		-->
+    </array>
 	<key>UIApplicationSceneManifest</key>
 	<dict>
 		<key>UIApplicationSupportsMultipleScenes</key>
diff --git a/iOS/testbed/iOSTestbedTests/iOSTestbedTests.m b/iOS/testbed/iOSTestbedTests/iOSTestbedTests.m
index e6a919c304ec8d..6db38253396c8d 100644
--- a/iOS/testbed/iOSTestbedTests/iOSTestbedTests.m
+++ b/iOS/testbed/iOSTestbedTests/iOSTestbedTests.m
@@ -9,28 +9,41 @@ @implementation iOSTestbedTests
 
 
 - (void)testPython {
-    // Arguments to pass into the test suite runner.
-    // argv[0] must identify the process; any subsequent arg
-    // will be handled as if it were an argument to `python -m test`
-    const char *argv[] = {
-        "iOSTestbed", // argv[0] is the process that is running.
-        "-uall",  // Enable all resources
-        "-W",  // Display test output on failure
-        // To run a subset of tests, add the test names below; e.g.,
-        // "test_os",
-        // "test_sys",
-    };
-
-    // Start a Python interpreter.
+    const char **argv;
     int exit_code;
+    int failed;
     PyStatus status;
     PyPreConfig preconfig;
     PyConfig config;
+    PyObject *sys_module;
+    PyObject *sys_path_attr;
+    NSArray *test_args;
     NSString *python_home;
+    NSString *path;
     wchar_t *wtmp_str;
 
     NSString *resourcePath = [[NSBundle mainBundle] resourcePath];
 
+    // Set some other common environment indicators to disable color, as the
+    // Xcode log can't display color. Stdout will report that it is *not* a
+    // TTY.
+    setenv("NO_COLOR", "1", true);
+    setenv("PY_COLORS", "0", true);
+
+    // Arguments to pass into the test suite runner.
+    // argv[0] must identify the process; any subsequent arg
+    // will be handled as if it were an argument to `python -m test`
+    test_args = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"TestArgs"];
+    if (test_args == NULL) {
+        NSLog(@"Unable to identify test arguments.");
+    }
+    argv = malloc(sizeof(char *) * ([test_args count] + 1));
+    argv[0] = "iOSTestbed";
+    for (int i = 1; i < [test_args count]; i++) {
+        argv[i] = [[test_args objectAtIndex:i] UTF8String];
+    }
+    NSLog(@"Test command: %@", test_args);
+
     // Generate an isolated Python configuration.
     NSLog(@"Configuring isolated Python...");
     PyPreConfig_InitIsolatedConfig(&preconfig);
@@ -40,6 +53,8 @@ - (void)testPython {
     // Enforce UTF-8 encoding for stderr, stdout, file-system encoding and locale.
     // See https://docs.python.org/3/library/os.html#python-utf-8-mode.
     preconfig.utf8_mode = 1;
+    // Use the system logger for stdout/err
+    config.use_system_logger = 1;
     // Don't buffer stdio. We want output to appears in the log immediately
     config.buffered_stdio = 0;
     // Don't write bytecode; we can't modify the app bundle
@@ -48,7 +63,7 @@ - (void)testPython {
     // Ensure that signal handlers are installed
     config.install_signal_handlers = 1;
     // Run the test module.
-    config.run_module = Py_DecodeLocale("test", NULL);
+    config.run_module = Py_DecodeLocale([[test_args objectAtIndex:0] UTF8String], NULL);
     // For debugging - enable verbose mode.
     // config.verbose = 1;
 
@@ -81,7 +96,7 @@ - (void)testPython {
     }
 
     NSLog(@"Configure argc/argv...");
-    status = PyConfig_SetBytesArgv(&config, sizeof(argv) / sizeof(char *), (char**) argv);
+    status = PyConfig_SetBytesArgv(&config, [test_args count], (char**) argv);
     if (PyStatus_Exception(status)) {
         XCTFail(@"Unable to configure argc/argv: %s", status.err_msg);
         PyConfig_Clear(&config);
@@ -96,11 +111,47 @@ - (void)testPython {
         return;
     }
 
+    sys_module = PyImport_ImportModule("sys");
+    if (sys_module == NULL) {
+        XCTFail(@"Could not import sys module");
+        return;
+    }
+
+    sys_path_attr = PyObject_GetAttrString(sys_module, "path");
+    if (sys_path_attr == NULL) {
+        XCTFail(@"Could not access sys.path");
+        return;
+    }
+
+    // Add the app packages path
+    path = [NSString stringWithFormat:@"%@/app_packages", resourcePath, nil];
+    NSLog(@"App packages path: %@", path);
+    wtmp_str = Py_DecodeLocale([path UTF8String], NULL);
+    failed = PyList_Insert(sys_path_attr, 0, PyUnicode_FromString([path UTF8String]));
+    if (failed) {
+        XCTFail(@"Unable to add app packages to sys.path");
+        return;
+    }
+    PyMem_RawFree(wtmp_str);
+
+    path = [NSString stringWithFormat:@"%@/app", resourcePath, nil];
+    NSLog(@"App path: %@", path);
+    wtmp_str = Py_DecodeLocale([path UTF8String], NULL);
+    failed = PyList_Insert(sys_path_attr, 0, PyUnicode_FromString([path UTF8String]));
+    if (failed) {
+        XCTFail(@"Unable to add app to sys.path");
+        return;
+    }
+    PyMem_RawFree(wtmp_str);
+
+    // Ensure the working directory is the app folder.
+    chdir([path UTF8String]);
+
     // Start the test suite. Print a separator to differentiate Python startup logs from app logs
     NSLog(@"---------------------------------------------------------------------------");
 
     exit_code = Py_RunMain();
-    XCTAssertEqual(exit_code, 0, @"Python test suite did not pass");
+    XCTAssertEqual(exit_code, 0, @"Test suite did not pass");
 
     NSLog(@"---------------------------------------------------------------------------");
 
diff --git a/pyconfig.h.in b/pyconfig.h.in
index c279b147db3bdd..3c16c694c84599 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -47,10 +47,6 @@
 /* Define if --enable-ipv6 is specified */
 #undef ENABLE_IPV6
 
-/* Define to 1 if your system stores words within floats with the most
-   significant word first */
-#undef FLOAT_WORDS_BIGENDIAN
-
 /* Define if getpgrp() must be called as getpgrp(0). */
 #undef GETPGRP_HAVE_ARG
 
@@ -829,12 +825,33 @@
 /* Define to 1 if you have the `nanosleep' function. */
 #undef HAVE_NANOSLEEP
 
-/* Define to 1 if you have the `ncursesw' library. */
+/* Define if you have the 'ncurses' library */
+#undef HAVE_NCURSES
+
+/* Define if you have the 'ncursesw' library */
 #undef HAVE_NCURSESW
 
+/* Define to 1 if you have the <ncursesw/curses.h> header file. */
+#undef HAVE_NCURSESW_CURSES_H
+
+/* Define to 1 if you have the <ncursesw/ncurses.h> header file. */
+#undef HAVE_NCURSESW_NCURSES_H
+
+/* Define to 1 if you have the <ncursesw/panel.h> header file. */
+#undef HAVE_NCURSESW_PANEL_H
+
+/* Define to 1 if you have the <ncurses/curses.h> header file. */
+#undef HAVE_NCURSES_CURSES_H
+
 /* Define to 1 if you have the <ncurses.h> header file. */
 #undef HAVE_NCURSES_H
 
+/* Define to 1 if you have the <ncurses/ncurses.h> header file. */
+#undef HAVE_NCURSES_NCURSES_H
+
+/* Define to 1 if you have the <ncurses/panel.h> header file. */
+#undef HAVE_NCURSES_PANEL_H
+
 /* Define to 1 if you have the <ndbm.h> header file. */
 #undef HAVE_NDBM_H
 
@@ -878,6 +895,12 @@
 /* Define to 1 if you have the `openpty' function. */
 #undef HAVE_OPENPTY
 
+/* Define if you have the 'panel' library */
+#undef HAVE_PANEL
+
+/* Define if you have the 'panelw' library */
+#undef HAVE_PANELW
+
 /* Define to 1 if you have the <panel.h> header file. */
 #undef HAVE_PANEL_H
 
@@ -1362,6 +1385,9 @@
 /* Define to 1 if you have the <sys/param.h> header file. */
 #undef HAVE_SYS_PARAM_H
 
+/* Define to 1 if you have the <sys/pidfd.h> header file. */
+#undef HAVE_SYS_PIDFD_H
+
 /* Define to 1 if you have the <sys/poll.h> header file. */
 #undef HAVE_SYS_POLL_H
 
@@ -1468,8 +1494,8 @@
 /* Define to 1 if you have the `truncate' function. */
 #undef HAVE_TRUNCATE
 
-/* Define to 1 if you have the `ttyname' function. */
-#undef HAVE_TTYNAME
+/* Define to 1 if you have the `ttyname_r' function. */
+#undef HAVE_TTYNAME_R
 
 /* Define to 1 if you don't have `tm_zone' but do have the external array
    `tzname'. */