说明： 详细介绍了如何使用Pyqt中的api接口，如何使用他们生成对话框，主窗口和整个应用程序，是将python与gui开发介绍的很详细的一本书 (Detailed information on how to use the api in Pyqt interface, how to use them to generate dialog box, the main window and the entire application, python and gui is described in great detail the development of a book)
