[issue23229] add inf, nan, infj, nanj to cmath module

[Mark Dickinson]

Mark Dickinson added the comment:

> This type should exist only at compile time.

But then after doing "x = 5j", "-0.0 + 5j" and "-0.0 + x" would have different values.  Yuck!

> repr() (and str()) should keep zero real part if imaginary part is negative and output period if real part is zero

Sorry, I don't see how this helps.  What do you want the repr of (for example) "complex(-0.0, 5.0)" to be, and why?  What about the cases with 0 in the imaginary part?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23229>
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