如何仅打印前5名客户及其购买的前5名产品及其各自的总销售额?

我已经尝试过此代码

result = df1.groupby(["Customer Name","Product Name"])
['Sales'].aggregate(np.sum).reset_index().sort_values('Sales',ascending = False).head(5)

结果

ID Customer Name    Product Name    Sales

8567    Sean Miller     Cisco TelePresence System EX90 Videoconferenci...   22638.480
9165    Tamara Chand    Canon imageCLASS 2200 Advanced Copier   17499.950
7725    Raymond Buch    Canon imageCLASS 2200 Advanced Copier   13999.960
9487    Tom Ashbrook    Canon imageCLASS 2200 Advanced Copier   11199.968
4083    Hunter Lopez    Canon imageCLASS 2200 Advanced Copier   10499.970

我不确定如何获得各自销售的前五名产品。