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

[Larry Hastings]

Larry Hastings added the comment:

> What I'm saying is that the existing function introspection API
> would have provided a much better way to do these things,
> and that it's good to finally have the meta data available in the
> source code so that that API can be made available at some point.

What "existing function introspection API"?  I wasn't aware there was an existing mechanism to provide signature metadata for builtin functions.

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