如何在Pandas中删除空值？

Question

我尝试在数据帧中删除列'Age'的空值,它由浮点值组成,但它不起作用.我试过了

data.dropna(subset=['Age'], how='all')
data['Age'] = data['Age'].dropna()
data=data.dropna(axis=1,how='all')

它适用于其他列但不适用于'Age'

    Pclass  Fare    Age Sex
0   3   7.2500  22.0    1
1   1   71.2833 38.0    0
2   3   7.9250  26.0    0
3   1   53.1000 35.0    0
4   3   8.0500  35.0    1
5   3   8.4583  NaN 1
6   1   51.8625 54.0    1
7   3   21.0750 2.0 1

Answer 1

data.dropna(subset=['Age'])会工作,但你应该设置inplace=True或分配回data:

data = data.dropna(subset=['Age'])

要么

data.dropna(subset=['Age'], inplace=True)