11:12:50: Starting C:\ProgramData\Anaconda3\python.exe -u C:\Users\wxlong\Documents\untitled2\qwe.py...
    qt.qpa.plugin: Could not load the Qt platform plugin "windows" in "" even though it was found.
    This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

    Available platform plugins are: direct2d, minimal, offscreen, windows.

    11:12:59: 程序异常结束。
    11:12:59: The process was ended forcefully.

问题解决

将 platforms 文件夹
C:\ProgramData\Anaconda3\Lib\site-packages\PySide2\plugins\platforms
拷贝至如下路径并覆盖同名文件夹
C:\ProgramData\Anaconda3\Library\plugins