def test_dup_scale(): assert dup_scale([], -1, ZZ) == [] assert dup_scale([1], -1, ZZ) == [1] assert dup_scale([1, 2, 3, 4, 5], -1, ZZ) == [1, -2, 3, -4, 5] assert dup_scale([1, 2, 3, 4, 5], -7, ZZ) == [2401, -686, 147, -28, 5]