[Python-ideas] math.inf and math.nan constants

[Todd]

The current way to get infinite and nan floats are to do float("inf") and
float("nan"), respectively.  For many applications, this is sufficient.
However, for scientific and mathematical computing, using inf and nan
values is very common, and the current approach is very verbose.  So for
those applications, I think it would be useful if the math standard library
module provided "math.nan" and "math.inf", which would return the same
thing as float("nan") and float("inf"), respectively.
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