[Python-Dev] Caching float(0.0)

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    Martin> However, it is certainly a change to the observable behavior of
    Martin> the Python implementation, and no amount of arguing can change
    Martin> that.

If C90 doesn't distinguish -0.0 and +0.0, how can Python?  Can you give a
simple example where the difference between the two is apparent to the
Python programmer?

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