maxframe.dataframe.DataFrame.reorder_levels#

DataFrame.reorder_levels(order, axis=0)#

使用输入的顺序重新排列索引层级。不能删除或重复层级。

参数:

  • order (list of int or list of str) -- 表示新层级顺序的列表。通过数字（位置）或键（标签）引用层级。

  • axis ({0 or 'index', 1 or 'columns'}, default 0) -- 在何处重新排序层级。

返回类型:

DataFrame

示例

>>> import maxframe.dataframe as md
>>> data = {
...     "class": ["Mammals", "Mammals", "Reptiles"],
...     "diet": ["Omnivore", "Carnivore", "Carnivore"],
...     "species": ["Humans", "Dogs", "Snakes"],
... }
>>> df = md.DataFrame(data, columns=["class", "diet", "species"])
>>> df = df.set_index(["class", "diet"])
>>> df.execute()
                                  species
class      diet
Mammals    Omnivore                Humans
           Carnivore                 Dogs
Reptiles   Carnivore               Snakes

让我们重新排序索引的层级：

>>> df.reorder_levels(["diet", "class"]).execute()
                                  species
diet      class
Omnivore  Mammals                  Humans
Carnivore Mammals                    Dogs
          Reptiles                 Snakes