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Title: PEP 695: typing.TypeVar should be subclassable · Issue #104662 · python/cpython · GitHub

Open Graph Title: PEP 695: typing.TypeVar should be subclassable · Issue #104662 · python/cpython

X Title: PEP 695: typing.TypeVar should be subclassable · Issue #104662 · python/cpython

Description: Previously typing.TypeVar could be subclassed, and typing_extensions actually does this. However, the new C implementation of TypeVar doesn't allow subclassing. For compatibility, let's restore the ability to subclass it.

Open Graph Description: Previously typing.TypeVar could be subclassed, and typing_extensions actually does this. However, the new C implementation of TypeVar doesn't allow subclassing. For compatibility, let's restore the...

X Description: Previously typing.TypeVar could be subclassed, and typing_extensions actually does this. However, the new C implementation of TypeVar doesn't allow subclassing. For compatibility, let's res...

Opengraph URL: https://github.com/python/cpython/issues/104662

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