Answers for "how to check if an element is nan in python"

python test if value is np.nan

import numpy as np

mynan = np.nan
mynum = 18

print("NaN? : ", np.isnan(mynan)) # Use np.isnan() to test
print("NaN? : ", np.isnan(mynum))

# Results:
# Nan? : True
# NaN? : False

python test is nan

math.isnan(n)

python checking if something is equal to NaN

# Test to see if it is equal to itself
def isNaN(num):
    return num != num

check if something is nan python

import math
print math.isnan(float('NaN'))OutputTrue
print math.isnan(1.0)OutputFalse