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# pandas.Index.join

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

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

  Parameters : | other : Index how : {‘left’, ‘right’, ‘inner’, ‘outer’} level : return_indexers : boolean, default False
  Returns : | join_index, (left_indexer, right_indexer)

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