[issue45100] Improve help() by making typing.overload() information accessible at runtime

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

Note, I'm not proposing a create_function() decorator.  That is just for the proof of concept.  The actual logic would go into normal function creation, the same place that __annotations__ gets added.

Also, there may be a better place than func.__globals__ to accumulate the overloads.  For the proof-of-concept, it was just the easiest way to go.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45100>
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