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

[Larry Hastings]

Larry Hastings added the comment:

Here's a patch that adds __text_signature__ support for three more builtin types:
  method_descriptor
  classmethod_descriptor
  wrapper_descriptor
  method-wrapper

The patch also modifies inspect.Signature so it recognizes these types.

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Added file: http://bugs.python.org/file33365/larry.support.text_signature.on.more.types.diff.1.txt

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