Here is Pycharm finished package download link, can be the perfect solution to the problem set is invalid, download, unzip, pycharm directly into the lib folder.
Note: If you downloaded before the finished package, you need to be deleted before they can take effect
Link: https: //pan.baidu.com/s/1bTnf_8a8vhzYT1r2iWfBvA
extraction code: oo9d