如何在kivy中根据列表中的值个数生成按钮？

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)
        self.orientation = 'vertical'

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        self.orientation = 'vertical'
        
        # 假设列表名为my_list
        my_list = ['Button 1', 'Button 2', 'Button 3']
        
        for item in my_list:
            button = Button(text=item)
            self.add_widget(button)

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

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