def test_2(self):
    for i in range(10):
        self.listWidget.addItem(str('lklk'))

    self.listWidget.itemClicked.connect(self.test)

def test(self):
    for i in range(10):
        self.listWidget_2.addItem(str('DDD'))

    self.listWidget_2.itemClicked.connect(self.test_3)

def test_3(self):
        print ('hi')