python - pandas 从日期范围列中提取开始和结束日期

Question

我有一列包含日期范围，我只想将其分别提取到开始日期和结束日期。不确定这是否可以用datetime.strptime来实现直接

df_have = pd.DataFrame([[1, '01 Jan 2019-04 Jan 2019'], [2, '07 Jan 2019-11 Jan 2019']], columns=['Index', 'Range'])

Index   Range
0   1   01 Jan 2019-04 Jan 2019
1   2   07 Jan 2019-11 Jan 2019

df_want = pd.DataFrame([[1, '01 Jan 2019', '04 Jan 2019'], [2, '07 Jan 2019', '11 Jan 2019']], columns=['Index', 'Start', 'End'])

Index   Start   End
0   1   01 Jan 2019 04 Jan 2019
1   2   07 Jan 2019 11 Jan 2019

谢谢

Answer 1

使用str.split

例如:

import pandas as pd

df_have = pd.DataFrame([[1, '01 Jan 2019-04 Jan 2019'], [2, '07 Jan 2019-11 Jan 2019']], columns=['Index', 'Range'])
df_have[["start", "end"]] = df_have.pop("Range").str.split("-", expand=True)    #Thanks @ jezrael
print(df_have)

输出:

   Index        start          end
0      1  01 Jan 2019  04 Jan 2019
1      2  07 Jan 2019  11 Jan 2019