相关疑难解决方法(0)

我有一个通过groupby操作创建的多索引DataFrame.我正在尝试使用索引的几个级别进行复合排序,但我似乎找不到能够满足我需要的排序函数.

初始数据集看起来像这样(各种产品的每日销售额):

         Date Manufacturer Product Name Product Launch Date  Sales
0  2013-01-01        Apple         iPod          2001-10-23     12
1  2013-01-01        Apple         iPad          2010-04-03     13
2  2013-01-01      Samsung       Galaxy          2009-04-27     14
3  2013-01-01      Samsung   Galaxy Tab          2010-09-02     15
4  2013-01-02        Apple         iPod          2001-10-23     22
5  2013-01-02        Apple         iPad          2010-04-03     17
6  2013-01-02      Samsung       Galaxy          2009-04-27     10
7  2013-01-02      Samsung   Galaxy Tab          2010-09-02      7

我使用groupby来获取日期范围的总和:

> grouped = df.groupby(['Manufacturer', 'Product Name', 'Product Launch Date']).sum()
                                               Sales
Manufacturer Product Name Product Launch Date       
Apple        iPad         2010-04-03 …