索引到列pandas

代码示例

如何更改pandas dataframe中的indeces

>>> df.set_index('month')
       year  sale
month
1      2012    55
4      2014    40
7      2013    84
10     2014    31

将索引设置为列

df = df.set_index('col')
df['col'] = df.index

如何在dataframe python中更改索引

index = [1,2]
df.index = index

pandas从索引创建列

df.reset_index(level=0, inplace=True)

pandas将索引转换为列

df.reset_index(inplace=True)

如何使索引列作为普通列

df.reset_index(level=0, inplace=True)

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