Kivy绑定动态按钮事件-始终仅返回最后一个项值

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

class MyBoxLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyBoxLayout, self).__init__(**kwargs)
        self.orientation = 'vertical'

        # 创建按钮
        for i in range(5):
            button = Button(text=f'Button {i}')
            button.bind(on_release=self.button_pressed)  # 绑定按钮释放事件
            self.add_widget(button)

    def button_pressed(self, button):
        # 在按钮释放事件中获取按钮的文本值
        print(button.text)

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

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