在python pyqt中,从线程内部调用方法到另一个类

在pyqt窗口中,我调用一个线程来执行,该线程将数据发送回窗口以更新QLCDNumber,并且运行良好。但是当线程完成运行后,我希望它在接收窗口中调用一个方法。或者接收窗口,在接收到所有数据后,调用它自己的方法。我不知道如何在窗口内正确使用语句使其工作,也不知道如何从线程调用该方法。我已经尝试了很多方法,但我已经在代码中写下了我要实现的目标。。有什么想法吗?

class MyThread(QtCore.QThread):
    countChange = QtCore.pyqtSignal(int)
    countReset = QtCore.pyqtSignal(int)

    def __init__(self, parent=None):
        super(MyThread, self).__init__(parent)
        self.stopped = QtCore.QEvent(QtCore.QEvent.User)

    def start(self):
        self.stopped.setAccepted(False)
        super(MyThread, self).start()

    def run(self):
        while not self.stopped.isAccepted():
            credit = 0
            limit = 13    
            while credit <= limit:
                press = int(input('add a number'))
                if press == 1:
                    if not credit >= limit:
                        credit=(credit + 1)
                        print (credit)
                        self.countChange.emit(credit)
                        if credit >= limit:
                            print ('Enough Credit')
                            self.stop()

    def stop(self):
        self.stopped.setAccepted(True)
##   What I want to have here is:
##      send a command to class winDow.move_on() to execute

class winDow(QtGui.QMainWindow,cashwin.Ui_MainWindow):
    def __init__(self, parent=None):
        super(winDow, self).__init__(parent)
        self.setupUi(self)
        self.thread = MyThread(self)
        self.thread.countChange.connect(self.lcdNumber.display)
        self.pull_credit()
## or if self.thread.countChange.connect == 13:
##        self.move_on()

    @QtCore.pyqtSlot()
    def pull_credit(self):
        self.thread.start()

    def move_on(self):
        self.window = NextWindow()
        self.window.show()
        self.close()