Python numpy DataFrame dropna

Posted 2020-11-25 大牛和小白

import pandas as pd
import numpy as np

date = pd.date_range(\'20191231\', periods=6)
df = pd.DataFrame(np.arange(24).reshape(6,4), index=date, columns=[\'A\',\'B\',\'C\',\'D\'])

df.iloc[0,1] = np.nan
df.iloc[1,2] = np.nan

print(df)

   

print(df.dropna(axis=0, how=\'any\'))

   

print(df.dropna(axis=1, how=\'any\'))

   

print(df.dropna(axis=0, how=\'all\'))

   

print(df.dropna(axis=1, how=\'all\'))

   

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