def _arg1_for_noncanonical(self, M):
        data, row, col = _same_sum_duplicate(M.data, M.row, M.col)
        return data, (row, col)
Return non-canonical constructor arg1 equivalent to M
dataset/ETHPy150Open scipy/scipy/scipy/sparse/tests/test_base.py/TestCOONonCanonical._arg1_for_noncanonical