feat: Add support for Python 3.14

CONTRIBUTING.rst

@@ -22,7 +22,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:
-  3.9, 3.10, 3.11, 3.12, and 3.13 on both UNIX and Windows.
+  3.9, 3.10, 3.11, 3.12, 3.13 and 3.14 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -72,7 +72,7 @@ We use `nox <https://nox.readthedocs.io/en/latest/>`__ to instrument our tests.
 
 - To run a single unit test::
 
-    $ nox -s unit-3.13 -- -k <name of test>
+    $ nox -s unit-3.14 -- -k <name of test>
 
 
   .. note::
@@ -143,12 +143,12 @@ Running System Tests
    $ nox -s system
 
    # Run a single system test
-   $ nox -s system-3.13 -- -k <name of test>
+   $ nox -s system-3.14 -- -k <name of test>
 
 
   .. note::
 
-      System tests are only configured to run under Python 3.9, 3.12, and 3.13.
+      System tests are only configured to run under Python 3.9, 3.12, and 3.14.
       For expediency, we do not run them in older versions of Python 3.
 
   This alone will not run the tests. You'll need to change some local
@@ -226,12 +226,14 @@ We support:
 -  `Python 3.11`_
 -  `Python 3.12`_
 -  `Python 3.13`_
+-  `Python 3.14`_
 
 .. _Python 3.9: https://docs.python.org/3.9/
 .. _Python 3.10: https://docs.python.org/3.10/
 .. _Python 3.11: https://docs.python.org/3.11/
 .. _Python 3.12: https://docs.python.org/3.12/
 .. _Python 3.13: https://docs.python.org/3.13/
+.. _Python 3.14: https://docs.python.org/3.14/
 
 
 Supported versions can be found in our ``noxfile.py`` `config`_.

noxfile.py

@@ -41,9 +41,9 @@
     "setup.py",
 ]
 
-DEFAULT_PYTHON_VERSION = "3.10"
+DEFAULT_PYTHON_VERSION = "3.14"
 
-UNIT_TEST_PYTHON_VERSIONS: List[str] = ["3.9", "3.10", "3.11", "3.12", "3.13"]
+UNIT_TEST_PYTHON_VERSIONS: List[str] = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "asyncmock",
@@ -73,9 +73,14 @@
         "geography",
         "bqstorage",
     ],
+    "3.14": [
+        "tests",
+        "geography",
+        "bqstorage",
+    ],
 }
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.9", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.9", "3.12", "3.13", "3.14"]
 SYSTEM_TEST_STANDARD_DEPENDENCIES: List[str] = [
     "mock",
     "pytest",
@@ -98,6 +103,11 @@
         "geography",
         "bqstorage",
     ],
+    "3.14": [
+        "tests",
+        "geography",
+        "bqstorage",
+    ],
 }
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
@@ -193,7 +203,7 @@ def format(session):
 @_calculate_duration
 def lint_setup_py(session):
     """Verify that setup.py is valid (including RST check)."""
-    session.install("docutils", "pygments")
+    session.install("docutils", "pygments", "setuptools")
     session.run("python", "setup.py", "check", "--restructuredtext", "--strict")
 
 
@@ -234,15 +244,20 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation, install_extras=True):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    if protobuf_implementation == "cpp" and session.python in (
+        "3.11",
+        "3.12",
+        "3.13",
+        "3.14",
+    ):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    if install_extras and session.python in ["3.11", "3.12", "3.13"]:
+    if install_extras and session.python in ["3.11", "3.12", "3.13", "3.14"]:
         install_target = ".[geography,alembic,tests,bqstorage]"
     elif install_extras:
         install_target = ".[all]"
@@ -419,7 +434,7 @@ def compliance(session):
         "-c",
         constraints_path,
     )
-    if session.python in ["3.12", "3.13"]:
+    if session.python in ["3.12", "3.13", "3.14"]:
         extras = "[tests,geography,alembic]"
     else:
         extras = "[tests]"
@@ -549,7 +564,7 @@ def docfx(session):
     )
 
 
-@nox.session(python="3.13")
+@nox.session(python=DEFAULT_PYTHON_VERSION)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -558,7 +573,12 @@ def docfx(session):
 def prerelease_deps(session, protobuf_implementation):
     """Run all tests with prerelease versions of dependencies installed."""
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    if protobuf_implementation == "cpp" and session.python in (
+        "3.11",
+        "3.12",
+        "3.13",
+        "3.14",
+    ):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies

owlbot.py

@@ -34,10 +34,11 @@
     "3.11": ["tests", "geography", "bqstorage"],
     "3.12": ["tests", "geography", "bqstorage"],
     "3.13": ["tests", "geography", "bqstorage"],
+    "3.14": ["tests", "geography", "bqstorage"],
 }
 templated_files = common.py_library(
-    unit_test_python_versions=["3.9", "3.10", "3.11", "3.12", "3.13"],
-    system_test_python_versions=["3.9", "3.12", "3.13"],
+    unit_test_python_versions=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"],
+    system_test_python_versions=["3.9", "3.12", "3.13", "3.14"],
     cov_level=100,
     unit_test_extras=extras,
     unit_test_extras_by_python=extras_by_python,

setup.py

@@ -61,7 +61,8 @@ def readme():
         # grpc.Channel.close() method isn't added until 1.32.0.
         # https://github.com/grpc/grpc/pull/15254
         "grpcio >= 1.47.0, < 2.0.0",
-        "grpcio >= 1.49.1, < 2.0.0; python_version>='3.11'",
+        "grpcio >= 1.49.1, < 2.0.0; python_version =='3.11'",
+        "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
         "pyarrow >= 5.0.0",
     ],
 }
@@ -105,6 +106,7 @@ def readme():
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Operating System :: OS Independent",
         "Topic :: Database :: Front-Ends",
     ],
@@ -120,7 +122,7 @@ def readme():
         "sqlalchemy>=1.4.16,<3.0.0",
     ],
     extras_require=extras,
-    python_requires=">=3.8, <3.14",
+    python_requires=">=3.8, <3.15",
     tests_require=["packaging", "pytz"],
     entry_points={
         "sqlalchemy.dialects": ["bigquery = sqlalchemy_bigquery:BigQueryDialect"]