PyCharm2017.3.3激活方法
https://www.jianshu.com/p/1e1e992c7e9f
https://blog.csdn.net/zxjbeyond1986/article/details/79263529
https://blog.csdn.net/weixue9/article/details/78132050
有效网址:
http://blog.51cto.com/xvjunjie/2095207
https://www.jetbrains.com/pycharm/download/other.html