PYTHON

python check if nan

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

check is string is nan python

>>> pd.isnull(None)
True

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])

how to check if a string value is nan in python

if(term != term):
	print("it's a nan value")