pandas.MultiIndex.swaplevel — pandas 0.25.3 documentation (original) (raw)
MultiIndex. swaplevel(self, i=-2, j=-1)[source]¶
Swap level i with level j.
Calling this method does not change the ordering of the values.
| Parameters: | i : int, str, default -2 First level of index to be swapped. Can pass level name as string. Type of parameters can be mixed. j : int, str, default -1 Second level of index to be swapped. Can pass level name as string. Type of parameters can be mixed. |
|---|---|
| Returns: | MultiIndex A new 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. |
See also
Swap levels i and j in a MultiIndex.
Dataframe.swaplevel
Swap levels i and j in a MultiIndex on a particular axis.
Examples
mi = pd.MultiIndex(levels=[['a', 'b'], ['bb', 'aa']], ... codes=[[0, 0, 1, 1], [0, 1, 0, 1]]) mi MultiIndex([('a', 'bb'), ('a', 'aa'), ('b', 'bb'), ('b', 'aa')], ) mi.swaplevel(0, 1) MultiIndex([('bb', 'a'), ('aa', 'a'), ('bb', 'b'), ('aa', 'b')], )