如何使用.kv和.py为kivy应用程序创建一个标准的mvp？

class DataModel:
    def __init__(self):
        self.data = ""

    def set_data(self, data):
        self.data = data

    def get_data(self):
        return self.data

<MyView>:
    BoxLayout:
        orientation: 'vertical'
        TextInput:
            id: text_input
            on_text_validate: presenter.on_submit(text_input.text)
        Label:
            id: label
            text: presenter.data

from kivy.uix.boxlayout import BoxLayout
from model import DataModel

class MyPresenter:
    def __init__(self, view):
        self.view = view
        self.model = DataModel()
        self.view.bind(data=self.update_view)

    def on_submit(self, text):
        self.model.set_data(text)
        self.update_view()

    def update_view(self, *args):
        self.view.ids.label.text = self.model.get_data()

class MyView(BoxLayout):
    def __init__(self, **kwargs):
        super(MyView, self).__init__(**kwargs)
        self.presenter = MyPresenter(self)

from kivy.app import App
from presenter import MyView

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

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