Rearrange levels using input order. May not drop or duplicate levels.
List representing new level order. Reference level by number (position) or by key (label).
Examples
>>> mi = pd.MultiIndex.from_arrays([[1, 2], [3, 4]], names=['x', 'y'])
>>> mi
MultiIndex([(1, 3),
(2, 4)],
names=['x', 'y'])
>>> mi.reorder_levels(order=[1, 0])
MultiIndex([(3, 1),
(4, 2)],
names=['y', 'x'])
>>> mi.reorder_levels(order=['y', 'x'])
MultiIndex([(3, 1),
(4, 2)],
names=['y', 'x'])
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/2.3.0/reference/api/pandas.MultiIndex.reorder_levels.html