AttributeError：'super'对象没有属性'__getattr __'2

如何解决AttributeError：'super'对象没有属性'__getattr __'2

我遇到属性错误

在kivy.properties.ObservableDict中的文件“ kivy \ properties.pyx”，行863， 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'

''' ############################################ ##################### class MenuScreen（Screen）：

    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)

我粘贴的代码上方。请检查并发表评论以改进