df = pd.DataFrame({“name”: [‘A’,‘B’,‘C’,np.nan],
“age”: [np.nan,22,25,np.nan],
“gender”: [‘male’,‘female’,‘male’,‘female’],
})
df.dropna(subset=[‘name’, ‘age’],
axis=0, # axis=0表示删除行;
how=‘any’, # how=any表示若列name、age中,任意一个出现空值,就删掉该行
inplace=True # inplace=True表示在原df上进行修改;
)
df.dropna(subset=[‘name’, ‘age’],
axis=0,
how=‘all’, # how='all’表示若指定列的值都为空,就删掉该行
inplace=True)
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