Use typing_extensions.Self in the stdlib (#9694)

stdlib/io.pyi

@@ -2,12 +2,12 @@ import abc
 import builtins
 import codecs
 import sys
-from _typeshed import FileDescriptorOrPath, ReadableBuffer, Self, WriteableBuffer
+from _typeshed import FileDescriptorOrPath, ReadableBuffer, WriteableBuffer
 from collections.abc import Callable, Iterable, Iterator
 from os import _Opener
 from types import TracebackType
 from typing import IO, Any, BinaryIO, TextIO
-from typing_extensions import Literal
+from typing_extensions import Literal, Self
 
 __all__ = [
     "BlockingIOError",
@@ -51,7 +51,7 @@ class UnsupportedOperation(OSError, ValueError): ...
 class IOBase(metaclass=abc.ABCMeta):
     def __iter__(self) -> Iterator[bytes]: ...
     def __next__(self) -> bytes: ...
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
     ) -> None: ...
@@ -100,7 +100,7 @@ class FileIO(RawIOBase, BinaryIO):
     def closefd(self) -> bool: ...
     def write(self, __b: ReadableBuffer) -> int: ...
     def read(self, __size: int = -1) -> bytes: ...
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
 
 class BytesIO(BufferedIOBase, BinaryIO):
     def __init__(self, initial_bytes: ReadableBuffer = ...) -> None: ...
@@ -108,23 +108,23 @@ class BytesIO(BufferedIOBase, BinaryIO):
     # to allow BytesIO sub-classes to add this field, as it is defined
     # as a read-only property on IO[].
     name: Any
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def getvalue(self) -> bytes: ...
     def getbuffer(self) -> memoryview: ...
     def read1(self, __size: int | None = -1) -> bytes: ...
 
 class BufferedReader(BufferedIOBase, BinaryIO):
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __init__(self, raw: RawIOBase, buffer_size: int = ...) -> None: ...
     def peek(self, __size: int = 0) -> bytes: ...
 
 class BufferedWriter(BufferedIOBase, BinaryIO):
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __init__(self, raw: RawIOBase, buffer_size: int = ...) -> None: ...
     def write(self, __buffer: ReadableBuffer) -> int: ...
 
 class BufferedRandom(BufferedReader, BufferedWriter):
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def seek(self, __target: int, __whence: int = 0) -> int: ...  # stubtest needs this
 
 class BufferedRWPair(BufferedIOBase):
@@ -172,7 +172,7 @@ class TextIOWrapper(TextIOBase, TextIO):
         write_through: bool | None = None,
     ) -> None: ...
     # These are inherited from TextIOBase, but must exist in the stub to satisfy mypy.
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __iter__(self) -> Iterator[str]: ...  # type: ignore[override]
     def __next__(self) -> str: ...  # type: ignore[override]
     def writelines(self, __lines: Iterable[str]) -> None: ...  # type: ignore[override]