bpo-38979: fix ContextVar "__class_getitem__" method (GH-17497)

now contextvars.ContextVar "__class_getitem__" method returns ContextVar class, not None. 


https://bugs.python.org/issue38979



Automerge-Triggered-By: @asvetlov

AMIR committed 6y ago

28c91631c24e53713ad0e8a2bbae716373f5e53d

Parent: 00ada2c

Committed by Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> on 12/8/2019, 11:35:59 AM