Em Sex, 2006-05-05 às 16:37 -0400, Ivan Vinogradov escreveu:
> This works to catch NaN on OSX and Linux:
> 
> # assuming x is a number
> if x+1==x or x!=x:
>       #x is NaN

This works everywhere:

nan = float('nan')

.
.
.

if x == nan:
    # x is not a number

-- 
Felipe.

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