[issue17159] Remove explicit type check from inspect.Signature.from_function()

[Stefan Behnel]

Stefan Behnel added the comment:

Tried it, works for me.

Explicitly rejecting classes is a good idea, IMHO, as is requiring that any function-like object must be callable, obviously.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17159>
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