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import missingno as msno # check for missing values

import pandas as pd

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
import missingno as msno
air_reserve = pd.read_csv('../input/air_reserve.csv')
hpg_reserve = pd.read_csv('../input/hpg_reserve.csv')
visits = pd.read_csv('../input/air_visit_data.csv')
dates = pd.read_csv('../input/date_info.csv')
relation = pd.read_csv('../input/store_id_relation.csv')
air_store_info = pd.read_csv('../input/air_store_info.csv')
hpg_store_info = pd.read_csv('../input/hpg_store_info.csv')

msno.matrix(air_reserve)
msno.matrix(hpg_reserve)
msno.matrix(visits)
msno.matrix(air_store_info)
msno.matrix(hpg_store_info)