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Add TypeVars for the Iterators in select.select #15022

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Nov 14, 2025
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Add TypeVars for the Iterators in select.select #15022

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12 changes: 8 additions & 4 deletions stdlib/select.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@ import sys
from _typeshed import FileDescriptorLike
from collections.abc import Iterable
from types import TracebackType
from typing import Any, ClassVar, Final, final
from typing_extensions import Self
from typing import Any, ClassVar, Final, TypeVar, final
from typing_extensions import Never, Self

if sys.platform != "win32":
PIPE_BUF: Final[int]
Expand Down Expand Up @@ -31,9 +31,13 @@ if sys.platform != "win32":
def unregister(self, fd: FileDescriptorLike, /) -> None: ...
def poll(self, timeout: float | None = None, /) -> list[tuple[int, int]]: ...

_R = TypeVar("_R", default=Never)
_W = TypeVar("_W", default=Never)
_X = TypeVar("_X", default=Never)

def select(
rlist: Iterable[Any], wlist: Iterable[Any], xlist: Iterable[Any], timeout: float | None = None, /
) -> tuple[list[Any], list[Any], list[Any]]: ...
rlist: Iterable[_R], wlist: Iterable[_W], xlist: Iterable[_X], timeout: float | None = None, /
) -> tuple[list[_R], list[_W], list[_X]]: ...

error = OSError

Expand Down