pycharm运行PyQt5出现错误This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

在系统环境变量中增bai加：
QT_QPA_PLATFORM_PLUGIN_PATH

C:\Python34\Lib\site-packages\PyQt5\plugins   <<----这里改成你的duPyQt5的plugins文件夹所在位置