How to implement correct transition between Dialog and MainWindow PyQt5?

Question

Python

In general, the code is below. process in the dispatcher, who will tell you how to implement the transition in a more humane way?
(code to understand how it works..)

class Win2(QtWidgets.QDialog):
    
    def __init__(self, parent = None):
        super(BkTo, self).__init__(parent)
        self.bk = Ui_BackTo()
        self.bk.setupUi(self)
 
 
 
class Win1(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        QtWidgets.QWidget.__init__(self, parent)
 
        self.ui = Ui_MainWindow()
 
        self.ui.setupUi(self)
 
        self.ui.Enter.clicked.connect(self.enterOpen) 
 
    def enterOpen(self):
            dial = Win2(self)
            dial.exec_()
            dial.show()     
 
if __name__ == "__main__":       
    app = QtWidgets.QApplication([])
    application = MyWin()
 
    application.show()
    sys.exit(app.exec())

Answer 1

class Win2(QtWidgets.QDialog):
    
    def __init__(self, parent = None):
        super(BkTo, self).__init__(parent)

I think it is necessary to determine from whom exactly you are inherited --- it is desirable to pass one of the parents to super.

dial.exec_()
            dial.show()

This is a tautology, you only need exec.