Python Matrix Multiplication Program

Here you may get the program for python matrix operation.

If we would like to multiply 2 matrices then it ought to satisfy one condition.

we’d like to see this condition whereas implementing code while not ignoring.

A_mxn x B_pxq then n would be adequate p. Then solely we will multiply matrices. currently we are going to see the way to multiply 2 matrices mistreatment python nested list matrix illustration.

Python Matrix Multiplication Program

def print_matrix(matrix):
	for i in range(len(matrix)):
		for j in range(len(matrix[0])):
			print("\t",matrix[i][j],end=" ")
		print("\n")
 
def main():
	m = int( input("enter first matrix rows"));
	n = int( input("enter first matrix columns"));
	p = int( input("enter second matrix rows"));
	q = int( input("enter second matrix columns"));
	if( n != p):
		print ("matrice multipilication not possible...");
		exit();
	
#declaration of arrays
	array1=[[0 for j in range  (0 , n)] for i in range (0 , m)]
	array2=[[0 for j in range  (0 , q)] for i in range (0 , p)]
	result=[[0 for j in range  (0 , q)] for i in range (0 , m)]
 
#taking input from user
	print ("enter first matrix elements:" )
	for i in range(0 , m):
		for j in range(0 , n):
			array1[i][j]=int (input("enter element"))
	print ("enter second matrix elements:")
	for i in range(0 , p):
		for j in range(0 , q):
			array2[i][j]=int(input("enter element"))
	print ("first matrix")
	print_matrix(array1)
	print ("second matrix")
	print_matrix(array2)
	
#for multiplication
    # i will run throgh each row of matrix1
	for i in range(0 , m):
	# j will run through each column of matrix 2
		for j in range(0 , q):
		# k will run throguh each row of matrix 2
			for k in range(0 , n):
				result[i][j] += array1[i][k] * array2[k][j]
				
				
#printing result
	print ( "multiplication of two matrices:" )
	print_matrix(result)
	
main()

Upper is the python program to multiply 2 matrices.

Output

enter first matrix rows2
enter first matrix columns2
enter second matrix rows2
enter second matrix columns2
enter first matrix elements: 
enter elementl
enter element2 
enter element3 
enter element4 
enter second matrix elements:
enter elementl 
enter element2
enter element3 
enter element4 
first matrix 1 2 
3 4 
second matrix 1 2 3 4 multiplication of two matrices: 
7 10 
15 22