[置顶] 【python 数据框重命名列名】Pandas中DateFrame修改列名

>>>import pandas as pd
>>>a = pd.DataFrame({'A':[1,2,3], 'B':[4,5,6], 'C':[7,8,9]})
>>> a
A  B  C
0  1  4  7
1  2  5  8
2  3  6  9

>>>a.rename(columns={'A':'a', 'B':'b', 'C':'c'}, inplace = True)
>>>a
a  b  c
0  1  4  7
1  2  5  8
2  3  6  9

>>>a.rename(columns={'A':'a', 'C':'c'}, inplace = True)
>>>a
a  B  c
0  1  4  7
1  2  5  8
2  3  6  9