在cmd输入以下
python3 -m pip install numpy -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
参考:https://blog.csdn.net/MASILEJFOAISEGJIAE/article/details/89473627
https://blog.csdn.net/jsut_rick/article/details/85765215
https://www.cnblogs.com/zhengyihan1216/p/6011640.html
https://www.cnblogs.com/Jimc/p/10304983.html