def test_sub(self):
        one = Polynomial(map(GF256int,     (8,3,5,1)))
        two = Polynomial(map(GF256int, (5,3,1,1,6,8)))
        r = two - one
        self.assertEqual(r.coefficients, (5,3,9,2,3,9))
dataset/ETHPy150Open brownan/Reed-Solomon/polynomialtest.py/TestGFPoly.test_sub/swapped operands of `-`