【报错】qt.qpa.plugin: Could not find the Qt platform plugin “windows“ in ““

报错：qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

错误描述：PyQt5 程序在启动时，找不到 Windows 平台所需的 Qt 插件（主要是qwindows.dll），导致无法初始化图形界面。

解决办法:

（1）pip show PyQt5：查看已安装的 PyQt5 库的详细信息

安装路径： C:\Users\韩梦珊\AppData\Roaming\Python\Python312\site-packages

（2）找到plugins的路径：C:\Users\韩梦珊\AppData\Roaming\Python\Python312\site-packages\PyQt5\Qt5\plugins

（3）手动添加PyQt5插件的环境变量：

（4）重启电脑