Table of Contents

Python code to Compute the Product of Two Matrices.

 

Python code implementation without user-defined functions & classes

Code: 
#Python code to Compute the Product of Two Matrices

a = [[1, 2, 3]]
b = [[1, 2, 3],
      [4, 5, 6],
    [7, 8, 9]
      ]


a_row_size = len(a)
a_column_size = len(a[0])
b_row_size = len(b)
b_column_size = len(b[0])


c = [[0, 0, 0]]

print(a_row_size)
print(a_column_size)
print(b_row_size)
print(b_column_size)

if a_column_size == b_row_size:
    print("Matrix Multiplication is Possible: ")
else:
    print("Matrix Multiplication not Possible: ")
    exit()

for i in range(0, a_row_size):
    for j in range(0, b_row_size):
        for k in range(0, b_column_size):
            c[i][j] = c[i][j] + a[i][k] * b[k][j]

print("Result after Multiplication: ",c)

 

Output: 
1
3
3
3
Matrix Multiplication is Possible:
Result after Multiplication:  [[30, 36, 42]]

 

 

Python code implementation using function

Code: 
#Python code to Compute the Product of Two Matrices using function

a = [[1, 2, 3]]
b = [[1, 2, 3],
      [4, 5, 6],
    [7, 8, 9]
      ]

def matrix_product_function(matrix_a, matrix_b):
    a_row_size = len(matrix_a)
    a_column_size = len(matrix_a[0])
    b_row_size = len(matrix_b)
    b_column_size = len(matrix_b[0])
    c = [[0, 0, 0]]
    print(a_row_size)
    print(a_column_size)
    print(b_row_size)
    print(b_column_size)

    if a_column_size == b_row_size:
        print("Matrix Multiplication is Possible: ")
    else:
        print("Matrix Multiplication not Possible: ")
        exit()

    for i in range(0, a_row_size):
        for j in range(0, b_row_size):
            for k in range(0, b_column_size):
                c[i][j] = c[i][j] + matrix_a[i][k] * matrix_b[k][j]
    return c



print("Result after Multiplication: ",matrix_product_function(a,b))

 

Output: 
1
3
3
3
Matrix Multiplication is Possible:
Result after Multiplication:  [[30, 36, 42]]

 

 

Python code implementation using Classes

Code: 
#Python code to Compute the Product of Two Matrices using class

a = [[1, 2, 3]]
b = [[1, 2, 3],
      [4, 5, 6],
    [7, 8, 9]
      ]
class Matrix_product_class(object):

    def matrix_product_function(self, matrix_a, matrix_b):
        self.matrix_a = matrix_a
        self.matrix_b = matrix_b
        a_row_size = len(self.matrix_a)
        a_column_size = len(self.matrix_a[0])
        b_row_size = len(self.matrix_b)
        b_column_size = len(self.matrix_b[0])
        c = [[0, 0, 0]]
        print(a_row_size)
        print(a_column_size)
        print(b_row_size)
        print(b_column_size)

        if a_column_size == b_row_size:
            print("Matrix Multiplication is Possible: ")
        else:
            print("Matrix Multiplication not Possible: ")
            exit()

        for i in range(0, a_row_size):
            for j in range(0, b_row_size):
                for k in range(0, b_column_size):
                    c[i][j] = c[i][j] + self.matrix_b[i][k] * self.matrix_b[k][j]
        return c

#Creating Object
Object_1 = Matrix_product_class()

#Calling Function using created object

print("Result after Multiplication: ",Object_1.matrix_product_function(a,b))

 

Output: 
1
3
3
3
Matrix Multiplication is Possible:
Result after Multiplication:  [[30, 36, 42]]

 

 

 

 

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