multiprocessing.Queue doesn't match Queue[all] for logging.handlers.QueueHandler

[bcl]

import logging.handlers
import multiprocessing as mp

def foo(queue: mp.Queue):
    handler = logging.handlers.QueueHandler(queue)

Returns the error:
tt.py:6: error: Argument 1 to "QueueHandler" has incompatible type "Queue"; expected Queue[Any]

[gvanrossum]

This is a typeshed issue.

The Queue expected by logging.handlers.QueueHandler() is a queue.Queue. It seems the multiprocessing.Queue class emulates that (i.e. duck typing). We might fix this by adding queue.Queue as the base class of multiprocessing.Queue in the stubs for multiprocessing. It should probably become a generic class then (since queue.Queue is generic). Do you want to attempt that as a PR for typeshed?

[bcl]

Sure - python/typeshed#1525

[JelleZijlstra]

Closing this since we can discuss on the typeshed issue.