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shutil.which cannot return PathLike, and fails with cmd: PathLike on Windows Python < 3.12 #13580

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Merged
merged 2 commits into from
Mar 5, 2025
Merged

shutil.which cannot return PathLike, and fails with cmd: PathLike on Windows Python < 3.12 #13580

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aad5772
shutil.which cannot return PathLike
Avasam Mar 4, 2025
fa7646b
Remove unused variable
Avasam Mar 4, 2025
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10 changes: 7 additions & 3 deletions stdlib/shutil.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ import sys
from _typeshed import BytesPath, ExcInfo, FileDescriptorOrPath, StrOrBytesPath, StrPath, SupportsRead, SupportsWrite
from collections.abc import Callable, Iterable, Sequence
from tarfile import _TarfileFilter
from typing import Any, AnyStr, NamedTuple, Protocol, TypeVar, overload
from typing import Any, AnyStr, NamedTuple, NoReturn, Protocol, TypeVar, overload
from typing_extensions import TypeAlias, deprecated

__all__ = [
Expand Down Expand Up @@ -36,7 +36,6 @@ __all__ = [
]

_StrOrBytesPathT = TypeVar("_StrOrBytesPathT", bound=StrOrBytesPath)
_StrPathT = TypeVar("_StrPathT", bound=StrPath)
# Return value of some functions that may either return a path-like object that was passed in or
# a string
_PathReturn: TypeAlias = Any
Expand Down Expand Up @@ -185,8 +184,13 @@ else:
@overload
def chown(path: FileDescriptorOrPath, user: str | int, group: str | int) -> None: ...

if sys.platform == "win32" and sys.version_info < (3, 12):
@overload
@deprecated("On Windows before Python 3.12, using a PathLike as `cmd` would always fail or return `None`.")
def which(cmd: os.PathLike[str], mode: int = 1, path: StrPath | None = None) -> NoReturn: ...

@overload
def which(cmd: _StrPathT, mode: int = 1, path: StrPath | None = None) -> str | _StrPathT | None: ...
def which(cmd: StrPath, mode: int = 1, path: StrPath | None = None) -> str | None: ...
@overload
def which(cmd: bytes, mode: int = 1, path: StrPath | None = None) -> bytes | None: ...
def make_archive(
Expand Down