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Update to typing: treat subscripted generics as proxies (#265)

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Ivan Levkivskyi 2017-02-24 04:03:28 +01:00 • committed by Mariatta
parent 1aceb02417
commit abb3b8ad94
2 changed files with 34 additions and 0 deletions
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7
Lib/typing.py
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@ -1158,6 +1158,13 @@ class GenericMeta(TypingMeta, abc.ABCMeta):
self.__parameters__, self.__args__, self.__origin__,
self.__extra__, self.__orig_bases__)
def __setattr__(self, attr, value):
# We consider all the subscripted genrics as proxies for original class
if attr.startswith('__') and attr.endswith('__'):
super(GenericMeta, self).__setattr__(attr, value)
else:
super(GenericMeta, _gorg(self)).__setattr__(attr, value)
# Prevent checks for Generic to crash when defining Generic.
Generic = None