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typing: Modernize type annotations on IO classes (#133487)

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Remove unnecessary strings, use of Union[], use of List[], and reliance
on implicit Optional.

These type annotations are not actually used for anything but I feel
we should set a good example.
This commit is contained in:
Jelle Zijlstra 2025-05-05 22:32:38 -07:00 • committed by GitHub
parent 982830ce56
commit 6a8f6eddd3
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1 changed files with 8 additions and 8 deletions
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16
Lib/typing.py
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@ -3477,7 +3477,7 @@ def readline(self, limit: int = -1) -> AnyStr:
pass
@abstractmethod
def readlines(self, hint: int = -1) -> List[AnyStr]:
def readlines(self, hint: int = -1) -> list[AnyStr]:
pass
@abstractmethod
@ -3493,7 +3493,7 @@ def tell(self) -> int:
pass
@abstractmethod
def truncate(self, size: int = None) -> int:
def truncate(self, size: int | None = None) -> int:
pass
@abstractmethod
@ -3505,11 +3505,11 @@ def write(self, s: AnyStr) -> int:
pass
@abstractmethod
def writelines(self, lines: List[AnyStr]) -> None:
def writelines(self, lines: list[AnyStr]) -> None:
pass
@abstractmethod
def __enter__(self) -> 'IO[AnyStr]':
def __enter__(self) -> IO[AnyStr]:
pass
@abstractmethod
@ -3523,11 +3523,11 @@ class BinaryIO(IO[bytes]):
__slots__ = ()
@abstractmethod
def write(self, s: Union[bytes, bytearray]) -> int:
def write(self, s: bytes | bytearray) -> int:
pass
@abstractmethod
def __enter__(self) -> 'BinaryIO':
def __enter__(self) -> BinaryIO:
pass
@ -3548,7 +3548,7 @@ def encoding(self) -> str:
@property
@abstractmethod
def errors(self) -> Optional[str]:
def errors(self) -> str | None:
pass
@property
@ -3562,7 +3562,7 @@ def newlines(self) -> Any:
pass
@abstractmethod
def __enter__(self) -> 'TextIO':
def __enter__(self) -> TextIO:
pass