pandas - ValueError : Index contains duplicate entries, 无法 reshape

Question

我正在尝试使用以下功能 reshape 我的 pd 数据框:

 ar = ar.pivot(index='Received', columns='Merch Ref', values='acceptance_rate')

数据集如下所示:

     Merch Ref            Received  acceptance_rate
0           SF 2014-08-28 15:38:00                0
1           SF 2014-08-28 15:44:00                0
2           SF 2014-08-28 16:04:00                0
3           WF 2014-08-28 16:05:00                0
4           WF 2014-08-28 16:07:00                0
5           SF 2014-08-28 16:34:00                0
6           SF 2014-08-28 16:55:00                0
7           BF 2014-08-28 17:59:00                0
8           BF 2014-08-29 15:05:00                0
9           SF 2014-08-29 21:25:00                0
10          SF 2014-08-30 10:29:00                0
...

我想获得的是:

                      SF WF BF 
2014-08-28 15:38:00    0  1  0
2014-08-28 15:44:00    0  1  0
2014-08-28 16:04:00    0  0  1
2014-08-28 16:05:00    1  1  0
2014-08-28 16:07:00    0  0  1
2014-08-28 16:34:00    1  1  0
2014-08-28 16:55:00    1  1  0
2014-08-28 17:59:00    0  1  0
2014-08-29 15:05:00    0  0  1
2014-08-29 21:25:00    0  0  1 
2014-08-30 10:29:00    0  1  0

但是，我收到错误:

 ValueError: Index contains duplicate entries, cannot reshape

这是因为我同时有一些订单。有没有办法汇总/汇总这些订单？

Answer 1

尝试删除重复项:

ar = ar.drop_duplicates(['Received','Merch Ref'])

它应该工作