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generic GenericAlias #13941

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13 changes: 8 additions & 5 deletions stdlib/types.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,8 @@ from collections.abc import (
ValuesView,
)
from importlib.machinery import ModuleSpec
from typing import Any, ClassVar, Literal, TypeVar, final, overload
from typing_extensions import ParamSpec, Self, TypeAliasType, TypeVarTuple, deprecated
from typing import Any, ClassVar, Generic, Literal, final, overload
from typing_extensions import ParamSpec, Self, TypeAliasType, TypeVar, TypeVarTuple, deprecated

__all__ = [
"FunctionType",
Expand Down Expand Up @@ -642,14 +642,17 @@ def coroutine(func: Callable[_P, Generator[Any, Any, _R]]) -> Callable[_P, Await
@overload
def coroutine(func: _Fn) -> _Fn: ...

class GenericAlias:
# typically a type or type expression
_OriginT_co = TypeVar("_OriginT_co", bound=type | TypeAliasType, default=type | TypeAliasType, covariant=True)

class GenericAlias(Generic[_OriginT_co]):
@property
def __origin__(self) -> type | TypeAliasType: ...
def __origin__(self) -> _OriginT_co: ...
@property
def __args__(self) -> tuple[Any, ...]: ...
@property
def __parameters__(self) -> tuple[Any, ...]: ...
def __new__(cls, origin: type, args: Any, /) -> Self: ...
def __new__(cls, origin: _OriginT_co, args: Any, /) -> Self: ...
def __getitem__(self, typeargs: Any, /) -> GenericAlias: ...
def __eq__(self, value: object, /) -> bool: ...
def __hash__(self) -> int: ...
Expand Down