[issue33315] Allow queue.Queue to be used in type annotations

2018-04-19 Thread Semyon Proshev 

New submission from Semyon Proshev :

from queue import Queue

a: Queue[int]

This code throws a TypeError in runtime.
But its pyi stub allows to use it in such a way 
(https://github.com/python/typeshed/blob/master/stdlib/3/queue.pyi)

I'd suggest to update classes in queue module to allow them to be used in type 
annotations.

--
components: Library (Lib)
messages: 315488
nosy: sproshev
priority: normal
severity: normal
status: open
title: Allow queue.Queue to be used in type annotations
versions: Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue33315] Allow queue.Queue to be used in type annotations

2018-04-23 Thread Semyon Proshev 

Semyon Proshev  added the comment:

I had been thinking about `__class_getitem__` when the issue were created.

I suspected it's not difficult to implement and it follows PEP 560.
So I'm +1 for `__class_item__`, quotes and postponed evaluation are also ok.

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[issue33315] Allow queue.Queue to be used in type annotations

2018-05-03 Thread Semyon Proshev 

Semyon Proshev  added the comment:

I'm not sure that I'll be able to make a PR quickly, so feel free to do it

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