Ken Jin <kenjin4...@gmail.com> added the comment:
Hello, this issue is a byproduct of issue42195. It has already been fixed on Python 3.10, and on Python 3.9.2 (which isn't out yet). You can see the what's new for it here https://docs.python.org/3/whatsnew/3.9.html#notable-changes-in-python-3-9-2. The expected release date for Python 3.9.2 is Monday, 2021-02-15 according to PEP 596 https://www.python.org/dev/peps/pep-0596/. For now, I guess you'll have to use the old typing.Callable, then update it in newer versions of Python. On Python 3.10a4: >>> from typing import Optional >>> from collections.abc import Callable >>> Optional[Callable[[bytes], bytes]] typing.Optional[collections.abc.Callable[[bytes], bytes]] ---------- nosy: +kj _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42965> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
