Python Program to Add Two Matrices

 # Program to add two matrices using nested loop

X = [[12,7,3],

    [4 ,5,6],

    [7 ,8,9]]

Y = [[5,8,1],

    [6,7,3],

    [4,5,9]]

result = [[0,0,0],

         [0,0,0],

         [0,0,0]]

# iterate through rows

for i in range(len(X)):

   # iterate through columns

   for j in range(len(X[0])):

       result[i][j] = X[i][j] + Y[i][j]

for r in result:

   print(r)

Source Code: Matrix Addition using Nested List Comprehension

# 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)

Output

[17, 15, 4]
[10, 12, 9]
[11, 13, 18]