pycharm官网主页
https://www.jetbrains.com/pycharm/
Previous PyCharm Releases
https://www.jetbrains.com/pycharm/download/previous.html
pycharm运行环境设定：
1 File - Settings
2 进入 Project-Interpreter，点 Add_Local
3 选择 Existing environment
找到解释器python2或者python3安装的路径，选择python.exe文件