如何在kivy中通过按钮删除？

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

class MyLayout(BoxLayout):
    def delete_button(self, button):
        self.remove_widget(button)

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        self.orientation = 'vertical'
        
        # 添加一个按钮
        button = Button(text='删除按钮')
        button.bind(on_release=self.delete_button)
        self.add_widget(button)
        
    def delete_button(self, button):
        self.remove_widget(button)

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

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