[issue20189] inspect.Signature doesn't recognize all builtin types

[Nick Coghlan]

Nick Coghlan added the comment:

Note that tp_new is a static method, not a class method (the type creation
machinery takes care of passing in the right class rather than the
descriptor machinery)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20189>
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