mac安装python3

http://www.jianshu.com/p/51811fa24752

brew install python3

安装路径：/usr/local/Cellar

使用：

执行python3即可

配置到pycharm:

https://segmentfault.com/q/1010000008505024/a-1020000008507815

https://segmentfault.com/a/1190000003758895