Python Program to multiply two matrices

# 4x4 matrix multiplication using Python3
# Function definition
def matrix_multiplication(M, N):
    # List to store matrix multiplication result
    R = [[0, 0, 0, 0], 
        [0, 0, 0, 0], 
        [0, 0, 0, 0],
        [0, 0, 0, 0]] 

    for i in range(0, 4): 
        for j in range(0, 4):
            for k in range(0, 4): 
                R[i][j] += M[i][k] * N[k][j] 

    for i in range(0, 4): 
        for j in range(0, 4): 
            # if we use print(), by default cursor moves to next line each time, 
            # Now we can explicitly define ending character or sequence passing
            # second parameter as end ="<character or string>"
            # syntax: print(<variable or value to print>, end ="<ending with>")
            # Here space (" ") is used to print a gap after printing 
            # each element of R
            print(R[i][j], end =" ")
        print("
", end ="")

# First matrix. M is a list
M = [[1, 1, 1, 1], 
    [2, 2, 2, 2], 
    [3, 3, 3, 3],
    [4, 4, 4, 4]]

# Second matrix. N is a list
N = [[1, 1, 1, 1], 
    [2, 2, 2, 2], 
    [3, 3, 3, 3],
    [4, 4, 4, 4]] 
    
# Call matrix_multiplication function
matrix_multiplication(M, N)

# This code is contributed by Santanu

# Python3 program to multiply two
# rectangular matrices

# Multiplies two matrices mat1[][]
# and mat2[][] and prints result.
# (m1) x (m2) and (n1) x (n2) are
# dimensions of given matrices.
def multiply(m1, m2, mat1, 
             n1, n2, mat2):

    res = [[0 for x in range(n2)]
              for y in range (m1)]
    
    for i in range(m1):
        for j in range(n2): 
            res[i][j] = 0
            for x in range(m2):            
                res[i][j] += (mat1[ i][x] * 
                              mat2[ x][j])
           
    for i in range(m1):
        for j in range(n2):      
            print (res[i][j], 
                   end = " ")        
        print ()

# Driver code
if __name__ == "__main__":
  
    mat1 = [[2, 4], [3, 4]]
    mat2 = [[1, 2], [1, 3]]
    m1, m2, n1, n2 = 2, 2, 2, 2
  
    # Function call
    multiply(m1, m2, mat1, 
             n1, n2, mat2)
    
# This code is contributed by Chitranayal