Index.
set_names
Set Index or MultiIndex name. Able to set new names partially and by level.
Name(s) to set.
If the index is a MultiIndex, level(s) to set (None for all levels). Otherwise level must be None.
Modifies the object directly, instead of creating a new Index or MultiIndex.
The same type as the caller or None if inplace is True.
See also
Index.rename
Able to set new names without level.
Examples
>>> idx = ps.Index([1, 2, 3, 4]) >>> idx Int64Index([1, 2, 3, 4], dtype='int64')
>>> idx.set_names('quarter') Int64Index([1, 2, 3, 4], dtype='int64', name='quarter')
For MultiIndex
>>> idx = ps.MultiIndex.from_tuples([('a', 'x'), ('b', 'y')]) >>> idx MultiIndex([('a', 'x'), ('b', 'y')], )
>>> idx.set_names(['kind', 'year'], inplace=True) >>> idx MultiIndex([('a', 'x'), ('b', 'y')], names=['kind', 'year'])
>>> idx.set_names('species', level=0) MultiIndex([('a', 'x'), ('b', 'y')], names=['species', 'year'])