[issue4322] function with modified __name__ uses original name when there's an arg error

[Benjamin Peterson]

Benjamin Peterson <musiccomposition at gmail.com> added the comment:

This is because these errors use the code object's name attribute
(f.func_code.co_name) for error messages.

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nosy: +benjamin.peterson
priority:  -> normal

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4322>
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