validar-valores-infinitos-nan.py

import math

menos_infinito = float('-inf')
mas_infinito = float('inf')
NaN = float('nan')

print(menos_infinito)
print(mas_infinito)
print(NaN)

print(math.isinf(menos_infinito))
print(math.isinf(mas_infinito))
print(math.isnan(NaN))