[issue39871] math.copysign raises SystemError with non-float x and custom y

[Zackery Spytz]

Zackery Spytz <zspytz at gmail.com> added the comment:

I have created a pull request to fix this issue.  Please consider taking a look.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39871>
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