将索引重新排序到特定顺序

Question

我有一个名为 exam 的数据框，我想根据常见顺序（一月、二月、三月、四月等）对月份列（即索引）进行排序。但是，它似乎是按升序排序的。我尝试了 reindex 命令，但没有任何区别。怎样才能随心所欲地订购？

这是代码

exam.reindex(['January','February','March','April','May','June','July','August','September','October','November'])

这是数据框

Answer 1

试试这个：

new_index = ['January','February','March','April','May','June','July','August','September','October','November']
exam = exam.loc[new_index]

Answer 2

您需要将其分配回来

exam = exam.reindex(['January','February','March','April','May','June','July','August','September','October','November'])

Reordering Index to a specific order