how to add to a matrix in python code example

Example 1: numpy matrix in python 3

np.matrix([[1, 2], [3, 4]])

# matrix([[1, 2],
#         [3, 4]])

Example 2: addition of matrices in python

# Program to add two matrices using list comprehension

X = [[12,7,3],
    [4 ,5,6],
    [7 ,8,9]]

Y = [[5,8,1],
    [6,7,3],
    [4,5,9]]

result = [[X[i][j] + Y[i][j]  for j in range(len(X[0]))] for i in range(len(X))]

for r in result:
   print(r)