用Python生成两个2×2矩阵，并计算矩阵乘积

代码如下：

import numpy as np

# 生成两个2×2矩阵
A = np.array([[1, 2], [3, 4]])
B = np.array([[5, 6], [7, 8]])

# 计算矩阵乘积
C = np.dot(A, B)

print("A =\n", A)
print("B =\n", B)
print("A × B =\n", C)

输出结果为：

A =
 [[1 2]
 [3 4]]
B =
 [[5 6]
 [7 8]]
A × B =
 [[19 22]
 [43 50]]