pandas.Series.swaplevel

Series.swaplevel(self, i=-2, j=-1, copy=True) [source]

Swap levels i and j in a MultiIndex.

Parameters:	i, j : int, str (can be mixed) Level of index to be swapped. Can pass level name as string.
Returns:	Series Series with levels swapped in MultiIndex. Changed in version 0.18.1: The indexes i and j are now optional, and default to the two innermost levels of the index.