3950.sagews

MS=MatrixSpace(GF(3),4,9)

M=MS([[0,2,1,2,0,2,2,1,1], [1,1,1,1,2,2,2,0,0], [2,2,2,2,1,1,1,0,0], [0,0,0,0,1,1,1,2,2]])

C=LinearCode(M)

C

Linear code of length 9, dimension 3 over Finite Field of size 3

C.minimum_distance()

4