如何访问for循环中的按钮并将其绑定到kivy中的on_press

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

class MyLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyLayout, self).__init__(**kwargs)
        self.orientation = 'vertical'
        
        # 假设我们有一个按钮文本的列表
        button_texts = ['Button 1', 'Button 2', 'Button 3']
        
        for text in button_texts:
            # 创建按钮并绑定on_press事件
            btn = Button(text=text)
            btn.bind(on_press=self.on_button_press)
            self.add_widget(btn)
    
    def on_button_press(self, instance):
        # instance参数就是触发事件的按钮
        print(f'Button {instance.text} pressed')

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

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