[issue45167] deepcopy of GenericAlias with __deepcopy__ method is broken

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

I think it is better to narrow the __getattr__. It can break protocols using other special methods.

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nosy: +gvanrossum, serhiy.storchaka

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45167>
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