📅  最后修改于: 2022-03-11 14:45:30.397000             🧑  作者: Mango
In [1]: grouped.sortlevel(["Manufacturer","Product Launch Date"], sort_remaining=False)
Sales
Manufacturer Product Name Product Launch Date
Apple iPod 2001-10-23 34
iPad 2010-04-03 30
Samsung Galaxy 2009-04-27 24
Galaxy Tab 2010-09-02 22