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Support initial keyword for functools.reduce 3.14 #13995

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Support initial keyword for functools.reduce 3.14 #13995

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1913b54
Support initial keyword for functools.reduce 3.14
max-muoto May 10, 2025
c656a07
Remove extras
max-muoto May 10, 2025
16632ec
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] May 10, 2025
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1 change: 0 additions & 1 deletion stdlib/@tests/stubtest_allowlists/py314.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -366,7 +366,6 @@ functools.__all__
functools.Placeholder
functools.WRAPPER_ASSIGNMENTS
functools.partialmethod.__new__
functools.reduce
functools.update_wrapper
functools.wraps
gzip.GzipFile.readinto
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10 changes: 8 additions & 2 deletions stdlib/functools.pyi
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Expand Up @@ -31,8 +31,14 @@ _RWrapped = TypeVar("_RWrapped")
_PWrapper = ParamSpec("_PWrapper")
_RWrapper = TypeVar("_RWrapper")

@overload
def reduce(function: Callable[[_T, _S], _T], sequence: Iterable[_S], initial: _T, /) -> _T: ...
if sys.version_info >= (3, 14):
@overload
def reduce(function: Callable[[_T, _S], _T], sequence: Iterable[_S], /, initial: _T) -> _T: ...

else:
@overload
def reduce(function: Callable[[_T, _S], _T], sequence: Iterable[_S], initial: _T, /) -> _T: ...

@overload
def reduce(function: Callable[[_T, _T], _T], sequence: Iterable[_T], /) -> _T: ...

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