This application failed to start because no Qt platform plugin could be initialized.
Python中的问题：
安装PyQt5以后，在IDLE中运行代码实现，一直报“This application failed to start because no Qt platform plugin could be initialized. Available platform plugins are: direct2d,……”，尝试配置环境变量以及重新安装第三方模块，仍未解决，咨询解决方法。