image_output_1.png
import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

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

train_data.isna().any().describe()