commit bd85c9738296cf4a53859ed17e9a6812d2071a21
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Wed Apr 04 09:51:34 2018 -0700
committer GitHub <noreply@github.com> Wed Apr 04 09:51:34 2018 -0700
tree a425fa424bff0ebcd374f187185b93b2d26aabf7
parent 785f36c876721c12f653371e9893527a25140624

Call super in Generic.__init_subclass__ (GH-6356)

(cherry picked from commit ee566fe526f3d069aa313578ee81ca6cbc25ff52)

Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>

Lib/typing.py

diff --git a/Lib/typing.py b/Lib/typing.py
index 510574c..3ac3b93 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -850,6 +850,7 @@
         return _GenericAlias(cls, params)
 
     def __init_subclass__(cls, *args, **kwargs):
+        super().__init_subclass__(*args, **kwargs)
         tvars = []
         if '__orig_bases__' in cls.__dict__:
             error = Generic in cls.__orig_bases__