make os._wrap_close not inherit from TextIOWrapper (#12774)

Author: tungol

stdlib/@tests/stubtest_allowlists/common.txt

@@ -634,6 +634,13 @@ tkinter.Place.place_slaves
 tkinter.Place.slaves
 
 # Methods that come from __getattr__() at runtime
+os._wrap_close.read
+os._wrap_close.readable
+os._wrap_close.readline
+os._wrap_close.readlines
+os._wrap_close.writable
+os._wrap_close.write
+os._wrap_close.writelines
 tkinter.Tk.adderrorinfo
 tkinter.Tk.call
 tkinter.Tk.createcommand

stdlib/os/__init__.pyi

@@ -23,8 +23,9 @@ from abc import abstractmethod
 from builtins import OSError
 from collections.abc import Callable, Iterable, Iterator, Mapping, MutableMapping, Sequence
 from contextlib import AbstractContextManager
-from io import BufferedRandom, BufferedReader, BufferedWriter, FileIO, TextIOWrapper as _TextIOWrapper
+from io import BufferedRandom, BufferedReader, BufferedWriter, FileIO, TextIOWrapper
 from subprocess import Popen
+from types import TracebackType
 from typing import (
     IO,
     Any,
@@ -578,7 +579,7 @@ def fdopen(
     newline: str | None = ...,
     closefd: bool = ...,
     opener: _Opener | None = ...,
-) -> _TextIOWrapper: ...
+) -> TextIOWrapper: ...
 @overload
 def fdopen(
     fd: int,
@@ -917,9 +918,25 @@ if sys.platform != "win32":
     if sys.platform != "darwin" and sys.platform != "linux":
         def plock(op: int, /) -> None: ...
 
-class _wrap_close(_TextIOWrapper):
-    def __init__(self, stream: _TextIOWrapper, proc: Popen[str]) -> None: ...
-    def close(self) -> int | None: ...  # type: ignore[override]
+class _wrap_close:
+    def __init__(self, stream: TextIOWrapper, proc: Popen[str]) -> None: ...
+    def close(self) -> int | None: ...
+    def __enter__(self) -> Self: ...
+    def __exit__(
+        self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
+    ) -> None: ...
+    def __iter__(self) -> Iterator[str]: ...
+    # Methods below here don't exist directly on the _wrap_close object, but
+    # are copied from the wrapped TextIOWrapper object via __getattr__.
+    # The full set of TextIOWrapper methods are technically available this way,
+    # but undocumented. Only a subset are currently included here.
+    def read(self, size: int | None = -1, /) -> str: ...
+    def readable(self) -> bool: ...
+    def readline(self, size: int = -1, /) -> str: ...
+    def readlines(self, hint: int = -1, /) -> list[str]: ...
+    def writable(self) -> bool: ...
+    def write(self, s: str, /) -> int: ...
+    def writelines(self, lines: Iterable[str], /) -> None: ...
 
 def popen(cmd: str, mode: str = "r", buffering: int = -1) -> _wrap_close: ...
 def spawnl(mode: int, file: StrOrBytesPath, arg0: StrOrBytesPath, *args: StrOrBytesPath) -> int: ...