Run
import pandas as pd import numpy as np df = pd.DataFrame( [[np.nan, 72, 67], [23, 78, 62], [32, 74, np.nan], [np.nan, 54, 76]], columns=['a', 'b', 'c']) print('Original DataFrame\n', df) df = df.fillna(0) print('\nModified DataFrame\n', df)
Output