更新Kivy中的小部件（Python）

Question

Can anyone explain to me how you update widgets in kivy? I have a code sample here:

class Game(Widget):
def __init__(self, **kwargs):
    super(Game, self).__init__(**kwargs)
    with self.canvas:
        Color(*sky_color)
        Rectangle(pos=(0, 0), size=self.size)
    with self.canvas:
        Color(*grass_color)
        Rectangle(pos=(0,0), size=(800,75))
    with self.canvas:
        Label(text='Funky Chicken', font_size='50sp', pos=(360, 400))
    with self.canvas:
        Button(text='Play', font_size='20')

class FunkyChickenApp(App):
    def build(self):
        return Game(size=Window.size)


if __name__ == "__main__":
    FunkyChickenApp().run()

This is supposed to be a game menu so some labels and stuff have to change when you press some buttons.

Edit* What i mean is how do I use Kivy clock

Answer 1

You need to bind actions to the buttons (the documentation has a few examples https://kivy.org/docs/api-kivy.uix.button.html ).

ie

button = Button(text='Play', font_size='20')
button.bind(on_press = do_something_you_want)