pandas.Index.set_names — pandas 0.18.1 documentation (original) (raw)

Set new names on index. Defaults to returning new index.

Index([1, 2, 3, 4]).set_names('foo') Int64Index([1, 2, 3, 4], dtype='int64') Index([1, 2, 3, 4]).set_names(['foo']) Int64Index([1, 2, 3, 4], dtype='int64') idx = MultiIndex.from_tuples([(1, u'one'), (1, u'two'), (2, u'one'), (2, u'two')], names=['foo', 'bar']) idx.set_names(['baz', 'quz']) MultiIndex(levels=[[1, 2], [u'one', u'two']], labels=[[0, 0, 1, 1], [0, 1, 0, 1]], names=[u'baz', u'quz']) idx.set_names('baz', level=0) MultiIndex(levels=[[1, 2], [u'one', u'two']], labels=[[0, 0, 1, 1], [0, 1, 0, 1]], names=[u'baz', u'bar'])