[Python-ideas] Suggestion: Extend integers to include iNaN

David Mertz mertz at gnosis.cx
Sun Sep 30 11:46:10 EDT 2018

On Sun, Sep 30, 2018 at 11:35 AM Chris Angelico <rosuav at gmail.com> wrote:

> On Mon, Oct 1, 2018 at 1:32 AM Steve Barnes <gadgetsteve at live.co.uk>
> wrote:
> > No complex can be converted to float without accessing either the real
> > or imag component.
> Or taking its absolute value, which will return nan if either part is nan.

Well, various other operations as well as abs().  Anything that reduces a
complex to a float already... I guess you could argue that behind the
scenest hese functions all access .real and/or .imag.

>>> float(abs(1+1j))
>>> float(cmath.phase(1+1j))
>>> float(cmath.isfinite(1+1j))

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