[issue38397] __init_subclass__ causes TypeError when used with more standard library metaclasses (such as EnumMeta)

[retnikt]

retnikt <retnikt at gmail.com> added the comment:

I can (and will) submit a PR for this, by the way.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38397>
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