python如何安装numpy
1. 根据python版本下载相应版本的numpy保存至D:\Program Files (x86)\Python\Python37\Scripts\
numpy下载地址

2. win+R,输入cmd,打开命令行窗口,定位到python的安装目录
3. 输入python -m pip install numpy或定位到目录:D:\Program Files (x86)\Python\Python37\Scripts,输入pip3.7 install numpy-1.19.1-cp37-cp37m-win_amd64.whl