python3.7安装， 解决pip is configured with locations that require TLS/SSL问题
参考文章：
（1）python3.7安装， 解决pip is configured with locations that require TLS/SSL问题
（2）https://www.cnblogs.com/jasonLiu2018/articles/10730605.html
备忘一下。
来源：oschina
链接：https://my.oschina.net/u/4437974/blog/4536130