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Author donovick
Recipients docs@python, donovick
Date 2019-02-14.06:14:12
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
Debian testing

python3 -VV:
Python 3.7.2+ (default, Feb  2 2019, 14:31:48)
[gcc 8.2.0]

The following:
class Meta(type): pass

class X(metaclass=Meta):
    def __class_getitem__(cls, key):
        return key

Results in 
TypeError: 'Meta' object does not support indexing

However, PEP 560 specifically states that __class_getitem__ should be used as fall back for when a metaclass does not implement __getitem__.
Date User Action Args
2019-02-14 06:14:12donovicksetrecipients: + donovick, docs@python
2019-02-14 06:14:12donovicksetmessageid: <>
2019-02-14 06:14:12donovicklinkissue35992 messages
2019-02-14 06:14:12donovickcreate