PYTHON

python check if nan

import math
x = float('nan')
math.isnan(x)
True

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

how to check if a value is nan in python

# If you are doing any conditional operation and you want to check a if
# a single value is Null or not then you can use numpy's isna method.
np.isna(df[col][0])