Python Kivy在弹出窗口中的按钮之间切换

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.popup import Popup

class MyPopup(Popup):
    def __init__(self, **kwargs):
        super(MyPopup, self).__init__(**kwargs)

        layout = BoxLayout(orientation='vertical')
        self.button1 = Button(text='Button 1', on_release=self.switch_buttons)
        self.button2 = Button(text='Button 2', on_release=self.switch_buttons)
        layout.add_widget(self.button1)
        layout.add_widget(self.button2)
        self.content = layout

    def switch_buttons(self, button):
        if button == self.button1:
            self.dismiss()
            self.button2.state = 'normal'  # 使Button 2可见
        elif button == self.button2:
            self.dismiss()
            self.button1.state = 'normal'  # 使Button 1可见

class MyApp(App):
    def build(self):
        return Button(text='Open Popup', on_release=self.open_popup)

    def open_popup(self, button):
        popup = MyPopup()
        popup.open()

if __name__ == '__main__':
    MyApp().run()