def _verify_partitioned_table(self, part_t, df, unique_keys):
        result = (part_t.execute()
                  .sort_index(by='id')
                  .reset_index(drop=True)
                  [df.columns])

        assert_frame_equal(result, df)

        parts = part_t.partitions()

        # allow for the total line
        assert len(parts) is (len(unique_keys) + 1)
dataset/ETHPy150Open cloudera/ibis/ibis/impala/tests/test_partition.py/TestPartitioning._verify_partitioned_table/operator `==` -> `is`