PyQt5

将ui转换成py文件然后运行

Widget

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    widget = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(widget)
    widget.setWindowTitle('12306')  # 窗体的标题
    widget.show()
    sys.exit(app.exec_())

Main_Window

if __name__ == "__main__":
import sys

app = QtWidgets.QApplication(sys.argv)
mainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(mainWindow)
mainWindow.show()
sys.exit(app.exec_())