How to make a row of a matrix be the column of another matrix in an elegant way with Python?

For example, let B be a 6 x 1 row matrix given by [6, 6, 6, 6, 6, 6] and let A be a 4 x 6 matrix given by

[[0, 1, 2, 3], 
 [1, 0, 0, 0], 
 [2, 0, 0, 0], 
 [3, 0, 0, 0], 
 [4, 0, 0, 0], 
 [5, 0, 0, 0]]

Would it be any elegant way to make the elements of, say, the second column of A be the elements of B? That is, to make A be

[[0, 6, 2, 3], 
 [1, 6, 0, 0], 
 [2, 6, 0, 0], 
 [3, 6, 0, 0], 
 [4, 6, 0, 0], 
 [5, 6, 0, 0]]