text_html_output_1.png text_plain_output_1.png
import pandas as pd

train_data = pd.read_csv('../input/digit-recognizer/train.csv')
test_data = pd.read_csv('../input/digit-recognizer/test.csv') / 255

print('Number of null values in training set:', train_data.isnull().sum().sum())
print('')
print('Number of null values in test set:', test_data.isnull().sum().sum())