Matrix Multiplication in Python

matrices.py

n = 300
a = np.ones((n,n))
b = np.ones((n,n))
c = np.zeros((n,n))
start_time = time.time()
for i in range(n):
    for j in range(n):
        for k in range(n):
            c[i][j] += a[i][k] * b[k][j]

print(f"I did it in {time.time() - start_time} sec." )