import math
def is_nan(num):
return math.isnan(num)
# Test
print(is_nan(float('nan'))) # True
print(is_nan(5)) # False
print(is_nan(float('inf'))) # False
import math
def is_nan(num):
return math.isnan(num)
# Test
print(is_nan(float('nan'))) # True
print(is_nan(5)) # False
print(is_nan(float('inf'))) # False