>>> A = matrix([[1,2,3], [4,5,6]]) >>> A matrix([[1, 2, 3], [4, 5, 6]]) >>> flip(A,0) matrix([[4, 5, 6], [1, 2, 3]]) >>> flipud(A) matrix([[4, 5, 6], [1, 2, 3]]) >>> A[::-1,] matrix([[4, 5, 6], [1, 2, 3]])