Bug report

DictProxy and ListProxy classes from multiprocessing.managers do not support generic annotations.

Minimal reproducible example for DictProxy:

from multiprocessing.managers import DictProxy from multiprocessing import Manager d: DictProxy[str, float] = Manager().dict()

Error:

Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: type 'DictProxy' is not subscriptable 

Similar for ListProxy

Side note: #99509 appears to still be an issue as well

Your environment

Python 3.11.4 (tags/v3.11.4:d2340ef, Jun 7 2023, 05:45:37) [MSC v.1934 64 bit (AMD64)] on win32

Linked PRs

• gh-107431: Make multiprocessing.managers.{DictProxy,ListProxy} generic #107433