pycharm运行PyQt5出现错误This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

在系统环境变量中增bai加：
QT_QPA_PLATFORM_PLUGIN_PATH

C:Python34Libsite-packagesPyQt5plugins   <<----这里改成你的duPyQt5的plugins文件夹所在位置

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原文地址：https://www.cnblogs.com/yttgrowupup/p/13599376.html