Python矩阵乘法实现

def matrixMul(A, B):
    if len(A[0]) == len(B):
        res = [[0] * len(B[0]) for i in range(len(A))]
        for i in range(len(A)):
            for j in range(len(B[0])):
                for k in range(len(B)):
                    res[i][j] += A[i][k] * B[k][j]
        return res
    return ('输入矩阵有误！')

来源：https://blog.csdn.net/qq_38314702/article/details/89419881