简单的 numpy 矩阵入门

#!/usr/bin/env Python3
# -*- coding: utf-8 -*-
# @Software: PyCharm
# @virtualenv：workon
# @contact: 1040691703@qq.com
# @Desc：Code descripton
__author__ = '未昔/AngelFate'
__date__ = '2020/4/30 18:45'

import numpy as np

a = np.array([[1, 2],
              [3, 4]])
b = np.array([[5, 6],
              [7, 8]])
print (a*b) # 对应位置元素相乘
print (a.dot(b)) # 矩阵乘法
print (np.dot(a, b)) # 矩阵乘法，同上