Python 3.x 属性错误：'；超级'；对象没有属性'__getattr'；2.

我得到属性错误

文件“kivy\properties.pyx”，第863行，位于kivy.properties.observedict.getattr AttributeError:“超级”对象没有属性“getattr”

请告知

Screen_helper = """


ScreenManager:
        
    MenuScreen:
    ProfileScreen:
    UploadScreen:
        
<MenuScreen>:
    name: 'menu'
    MDToolbar:
        title: 'LPS' 
         
    MDRectangleFlatButton:
        text:'Profile'
        pos_hint: {'center_x':0.5,'center_y':0.6}
        on_press: root.manager.current = 'profile'
        
    MDRectangleFlatButton:
        text:'Upload'
        pos_hint: {'center_x':0.5,'center_y':0.3}
        on_press: root.manager.current = 'upload'     
    Label:
        id: lbl9
        font_size: 150
        text: 'Temp Test'

---

上面是我粘贴的代码。请检查并发表评论以改进

当我删除此行时，由于self.ids.lbl9.text=str（thetemp），我收到了错误。文件工作正常。但是我想把临时值带到我的助手字符串中

    def __init__(self, **kwargs):
        super(MenuScreen, self).__init__(**kwargs)
        self.thetemp = None
        Clock.schedule_interval(self.getTheTemp, 1)

    def getTheTemp(self,dt):
        thetemp = GlobalShared.lifeword(ModbusTcpClient('127.0.0.1', 502))
        self.ids.lbl9.text = str(thetemp)
        print(thetemp)