Message 269242 - Python tracker

> 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`.