It might be worth considering also updatingContextManager andAsyncContextManager to match what I did inpython/typeshed#11048 forAbstractContextManager andAbstractAsyncContextManager, now that you've laid the necessary groundwork for defaults in_SpecialGenericAlias.

But we can also save it for a follow-up PR, if you'd prefer that. A change in typeshed doesn't make sense until we test 3.13 to the CI.

@Daverball Possibly, but note that we're one day away from the feature freeze for Python 3.13. I can spend some time on it later today, but please open a separate issue first.

@AlexWaygood if you have time, could you review this PR that just adds defaults for Generator and AsyncGenerator?

typing.Generator andtyping.AsyncGenerator are deprecated, why are they getting new features?

typing.Generator andtyping.AsyncGenerator are deprecated, why are they getting new features?

I would hope this isn't a real blocker here. From a user standpoint, users are toldcollections.abc variants are meant to behave identically. (they are actually documented as a deprecatedalias and not as a separate object)

Deprecated alias tocollections.abc.Generator.

(https://docs.python.org/3/library/typing.html#typing.Generator)

If this deprecation results in them not being equivalent anymore, you've broken the documented idea of them being equivalent.