[issue24205] signature.bind error messages are sub-optimal

[Martin Panter]

Martin Panter added the comment:

I think the patch is okay. Just beware that next(iter(kwargs)) can return different names if there is more than one unexpected argument, so the error message could vary. But it looks like the test cases are only when there is exactly one extra argument, so no problem.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24205>
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