commit 90e2998db78cd15e45b3c82f6360ac8841e03945
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Sat Jan 22 04:28:51 2022 -0800
committer GitHub <noreply@github.com> Sat Jan 22 14:28:51 2022 +0200
tree 534efde7eb1062aef3b613150d2d19e247faf827
parent d4a9e34401d519250d3b3744cd10394069f748c1

[3.10] bpo-46469: Make asyncio generic classes return GenericAlias (GH-30777) (#30784)

* bpo-46469: Make asyncio generic classes return GenericAlias (GH-30777)

* bpo-46469: Make asyncio generic classes return GenericAlias

* 📜🤖 Added by blurb_it.

* Update Misc/NEWS.d/next/Library/2022-01-22-05-05-08.bpo-46469.plUab5.rst

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
(cherry picked from commit ea5b96842e066623a53015d8b2492ed61a5baf96)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

* Fix tests

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

Lib/asyncio/queues.py

diff --git a/Lib/asyncio/queues.py b/Lib/asyncio/queues.py
index a87ec8b..10dd689 100644
--- a/Lib/asyncio/queues.py
+++ b/Lib/asyncio/queues.py
@@ -2,6 +2,7 @@
 
 import collections
 import heapq
+from types import GenericAlias
 
 from . import locks
 from . import mixins
@@ -69,8 +70,7 @@ def __repr__(self):
     def __str__(self):
         return f'<{type(self).__name__} {self._format()}>'
 
-    def __class_getitem__(cls, type):
-        return cls
+    __class_getitem__ = classmethod(GenericAlias)
 
     def _format(self):
         result = f'maxsize={self._maxsize!r}'