报错This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

问题 This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

 

 解决方案

临时解决

添加

import os
import PySide2
dirname = os.path.dirname(PySide2.__file__)
plugin_path = os.path.join(dirname, 'plugins', 'platforms')
os.environ['QT_QPA_PLATFORM_PLUGIN_PATH'] = plugin_path

永久解决

添加环境变量

C:\ProgramData\Miniconda3\Lib\site-packages\PySide2\plugins\platforms