[issue17352] Be clear that __prepare__ must be declared as a class method

[Berker Peksag]

Berker Peksag added the comment:

This is a duplicate of issue 15243.

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nosy: +berker.peksag
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> Misleading documentation for __prepare__

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17352>
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