Python 3.x Python矩阵乘法-追加到空列表中

如何生成随机矩阵并以有效的方式将其相乘

这就是我所做的：

`mat1 = []
for i in range(0, order):
    num1 = random.sample(range(1,10), order)
    print(num1)
    mat1.append(num1)
print()

print("Result of Matrix Multiplication.")
for p in range(len(mat1)):
    for q in range(len(mat2[0])):
        for r in range(len(mat2)):
            res_matrix[p][q] += mat1[p][r] * mat2[r][q]
for res in res_matrix:

print(res)`

---

您可以使用列表理解来生成

res\u矩阵

res_matrix = [[0 for i in range(order)] for j in range(order)]

还有，你听说过吗？它以一种简单且非常快速的方式进行此类计算（以及更多）。这就是你的代码将成为与numpy

import numpy as np

print("Generate 1st Matrix")
mat1 = np.random.randint(1, 10, size=(order, order))
print(mat1)

print("Generate 2nd Matrix")
mat2 = np.random.randint(1, 10, size=(order, order))
print(mat2)

res_matrix = mat1.dot(mat2)
print("Result of Matrix Multiplication.")
print(res_matrix)