cmd中pip show PyQt5，查看qt安装路径 location    ...site-packages

D:\App\dev\python\Lib\site-packages

将qt下的platforms路径配置到系统环境变量QT_QPA_PLATFORM_PLUGIN_PATH中

D:\App\dev\python\Lib\site-packages\PyQt5\Qt5\plugins\platforms

配置完环境变量重启电脑就OK啦

开心

参考

qt.qpa.plugin: Could not find the Qt platform plugin “windows“ in ““-CSDN博客

qt.qpa.plugin: Could not find the Qt platform plugin “windows“ in ““ This application failed to star-CSDN博客