Python/Kivy AttributeError: 'super' 对象没有属性

Question

我无法重新加载用户的图片或个人资料。我想重新加载的小部件包含在 ScreenOne 中，我在这个类中创建了重新加载的函数，并尝试从类 Change 中的函数中调用它。

先感谢您 ！

这是我的 main.py：

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

from kivy.uix.image import Image

import readtable

import Readpictureadress

import sizetable

import Match

import nbofpictures

import random

from kivy.uix.screenmanager import ScreenManager, Screen, NoTransition

from kivy.properties import ObjectProperty, NumericProperty, StringProperty

import kivy

size = sizetable.main()

Iduserp = (random.randint(1, size))

imagenb=0

picadress= Readpictureadress.main(Iduserp, 0)

class Manager(ScreenManager):

    screen_one = ObjectProperty(None)

    screen_two = ObjectProperty(None)

class ScreenTwo(Screen):

    print('screentwo')

    pass

class ScreenOne(Screen):

    img = StringProperty()

    global picadress

    global Iduserp

    def __init__(self, **kwargs):

        super(ScreenOne, self).__init__(**kwargs)

        self.img = picadress

    def displayScreenThenLeave(self):

        print('Displayscreen')

        self.changeScreen()

    def changeScreen(self):

        print('changescreen')

        if self.Manager.current == 'screen1':

            self.Manager.current = 'screen2'

        else:

            self.Manager.current = 'screen1'

    pass

    def reloadprofile(self):

        self.img = picadress

        self.ids.a1.reload()

class Change():

    global Iduserp

    global imagenb

    global picadress

    def changeuser(self):

        size = sizetable.main()

        Iduserp = (random.randint(1, size))

        app = App.get_running_app()

        app.screenone.reloadprofile()

    def changepicturenb (self):

        nbofpic = nbofpictures.main(Iduserp)

        if imagenb < nbofpic:

            imagenb += 1

        else:

            imagenb = 0

        app = App.get_running_app()

        app.screenone.reloadprofile()