[issue27363] Complex with negative zero imaginary part

[Mark Dickinson]

Mark Dickinson added the comment:

> People usually say it's because we don't have separate imaginary type, but we don't need it.

I think we do. Consider the case of something like -0 + 1j (the `repr` of complex(-0.0, 1.0)). That currently evaluates to `complex(0.0, 1.0)`, because the `-0.0` is combined with the `+0.0` real part of `1j`.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27363>
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