How to inheritance from the QPushButton class

[Mikeeeeee]

Hi!
How to inheritance from the QPushButton class? When I click a button, I need to get a signal from the objectName of the button.
If I do this, on the click program crashes

class MyPushButton(QPushButton):
    myClicked = pyqtSignal(str)
    # self.clicked.connect(self.qqq)

    def slotForMySignal(self):
        print(self.objectName())
        self.signalNeedUpdate.emit("adg")

    def __init__(self, *args):
        QPushButton.__init__(self, *args)
        self.clicked.connect(self.slotForMySignal)
        # self.signalNeedUpdate.emit("adg")

[Mikeeeeee]

It is work

class MyPushButton(QPushButton):
    myClicked = pyqtSignal(str)

    def slotForMySignal(self):
        self.myClicked.emit(self.objectName())

    def __init__(self, *args):
        super().__init__()
        self.clicked.connect(self.slotForMySignal)