Kivy如何在按钮之间切换

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

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        
        # 创建两个按钮
        self.button1 = Button(text='按钮1', on_release=self.switch_buttons)
        self.button2 = Button(text='按钮2', on_release=self.switch_buttons)
        
        # 将按钮添加到布局中
        self.add_widget(self.button1)
        self.add_widget(self.button2)
        
    def switch_buttons(self, instance):
        # 交换按钮的位置
        self.remove_widget(self.button1)
        self.remove_widget(self.button2)
        self.add_widget(self.button2)
        self.add_widget(self.button1)

class MyApp(App):
    def build(self):
        return MyLayout()

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