安裝PyQt5並解決This application failed to start because it could not find or load the Qt platform plugin"

安裝PyQt5 1、使用命令:pip install python-qt5 2、安裝完成後可以在%python%\Lib\site-packages\PyQt5目錄下找到designer.exe文件，即可正常編輯 注意 如果啓動後彈出This application failed to start because it could not find or load the Qt platform

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