# https://www.globalsino.com/ICs/
# Check if Cell Value is NaN

import pandas as pd
import numpy as np

df = pd.DataFrame(
	[[np.nan, 1, 2],
	[3, 4, 5],
	[6, 7, np.nan],
	[np.nan, 8, 9]],
	columns=['A', 'B', 'C'])

value = df.at[0, 'A'] 
isNaN = np.isnan(value)
print("df[0, 'A'] is :", isNaN)

value = df.at[0, 'B']  
isNaN = np.isnan(value)
print("df[0, 'B'] is :", isNaN)