text_html_output_1.png
import pandas as pd

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

import seaborn as sns

train = pd.read_csv('../input/titanic/train.csv')
test = pd.read_csv('../input/titanic/test.csv')

train.columns

train.isnull()

sns.heatmap(train.isnull(), yticklabels=False, cbar=False, cmap='OrRd_r')