ast <n...@gmail.com> writes:
> Le 13/02/2019 à 14:21, ast a écrit :
>> Hello
>>
>> >>> float('Nan') == float('Nan')
>> False
>>
>> Why ?
>>
>> Regards
>>
>
> Thank you for answers.
>
> If you wonder how I was trapped with it, here
> is the failing program.
>
>
> r = float('Nan')
>
> while r==float('Nan'):
> inp = input("Enter a number\n")
> try:
> r = float(inp)
> except ValueError:
> r = float('Nan')
import math
while math.isnan(r) :
will do what you're looking for.
If you're using python 3.5 or higher, you can also use math.nan instead
of float('nan').
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