【Pandas】dataframe分割列

df 分割列

https://zhuanlan.zhihu.com/p/343895339

>>> df['AB_split'] = df['AB'].str.split('-')
>>> df
      AB  AB_split
0  A1-B1  [A1, B1]
1  A2-B2  [A2, B2]
>>> df['A'], df['B'] = df['AB'].str.split('-', 1).str
>>> df
      AB  AB_split   A   B
0  A1-B1  [A1, B1]  A1  B1
1  A2-B2  [A2, B2]  A2  B2