pandas.Index.join

Index.join(self, other, how='left', level=None, return_indexers=False, sort=False)

Compute join_index and indexers to conform data structures to the new index.

Parameters

otherIndex

how{‘left’, ‘right’, ‘inner’, ‘outer’}

levelint or level name, default None

return_indexersbool, default False

sortbool, default False

Sort the join keys lexicographically in the result Index. If False, the order of the join keys depends on the join type (how keyword).

Returns

join_index, (left_indexer, right_indexer)

pandas.Index.item pandas.Index.map