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fix UnionType.__or__ and add UnionType.__getitem__ (#14687)

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Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
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KotlinIsland
2025-09-24 22:01:33 +10:00
committed by GitHub
parent 2cc9c1667d
commit cef41544d0
2 changed files with 24 additions and 3 deletions
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stdlib/types.pyi
+11 -2
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@@ -717,10 +717,19 @@ if sys.version_info >= (3, 10):
def __args__(self) -> tuple[Any, ...]: ...
@property
def __parameters__(self) -> tuple[Any, ...]: ...
def __or__(self, value: Any, /) -> UnionType: ...
def __ror__(self, value: Any, /) -> UnionType: ...
# `(int | str) | Literal["foo"]` returns a generic alias to an instance of `_SpecialForm` (`Union`).
# Normally we'd express this using the return type of `_SpecialForm.__ror__`,
# but because `UnionType.__or__` accepts `Any`, type checkers will use
# the return type of `UnionType.__or__` to infer the result of this operation
# rather than `_SpecialForm.__ror__`. To mitigate this, we use `| Any`
# in the return type of `UnionType.__(r)or__`.
def __or__(self, value: Any, /) -> UnionType | Any: ...
def __ror__(self, value: Any, /) -> UnionType | Any: ...
def __eq__(self, value: object, /) -> bool: ...
def __hash__(self) -> int: ...
# you can only subscript a `UnionType` instance if at least one of the elements
# in the union is a generic alias instance that has a non-empty `__parameters__`
def __getitem__(self, parameters: Any) -> object: ...
if sys.version_info >= (3, 13):
@final