Bug report

SimpleQueue andQueue classes frommultiprocessing module in Python 3.11.0 do not support type[str] annotation.

Minimal, reproducible example:

frommultiprocessingimportQueuemultiprocessing_queue:Queue[str]=Queue()

or

frommultiprocessingimportSimpleQueuemultiprocessing_queue:SimpleQueue[str]=SimpleQueue()

Result - error:

    multiprocessing_queue: SimpleQueue[str] = SimpleQueue()                           ~~~~~~~~~~~^^^^^TypeError: 'method' object is not subscriptable

How it should work:

It should work likeQueue from thequeue module:

fromqueueimportQueuestandard_queue:Queue[str]=Queue()

Result - no error.

Why do I need this?

I want my IDE to know thatqueue.get() returnsstr object.

Your environment

Python 3.11.0 arm64
Python 3.11.0 (main, Nov 4 2022, 17:22:54) [Clang 14.0.0 (clang-1400.0.29.202)] on darwin
MacBook M1 Pro macOS Ventura 13.0.1.

Linked PRs

• gh-99509: Add__class_getitem__ tomultiprocessing.Queue #99511