Bug report

Bug description:

AsyncIterator was removed from _PROTO_ALLOWLIST by #15647, without any discussion. It looks like an accident to me.

from typing import AsyncIterator, Protocol
class MyProto(AsyncIterator, Protocol): ...

result:

TypeError: Protocols can only inherit from other protocols, got <class 'collections.abc.AsyncIterator'>

CPython versions tested on:

3.12

Operating systems tested on:

macOS

Linked PRs

• gh-126699: allow AsyncIterator to be used as a base for Protocols #126702
• [3.12] gh-126699: allow AsyncIterator to be used as a base for Protocols (GH-126702) #126761
• [3.13] gh-126699: allow AsyncIterator to be used as a base for Protocols (GH-126702) #126762