每次在Kivy中按下此特定按钮时，我都需要更改我的随机数

from kivy.app import App
from kivy.uix.button import Button
import random

class RandomNumberApp(App):
    def update_random_number(self, instance):
        random_number = random.randint(1, 100)
        print("随机数:", random_number)

    def build(self):
        button = Button(text="点击生成随机数")
        button.bind(on_press=self.update_random_number)
        return button

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