@deprecate_kwarg('take_last', 'keep', mapping={True: 'last',
                                                   False: 'first'})
    @Appender(base._shared_docs['drop_duplicates'] + _index_doc_kwargs)
    def drop_duplicates(self, keep='first'):
        return super(Index, self).drop_duplicates(keep=keep)
dataset/ETHPy150Open pydata/pandas/pandas/indexes/base.py/Index.drop_duplicates/operator `%` -> `+`