Shared pattern?

main.py

from kivy.app import App
from kivy.lang import Builder
from MyWidget import MyWidget

from kivy.core.window import Window


from Shared import Shared

class MyApp(App):
    def build(self):
        self.root = MyWidget()

    def on_start(self, *_):
        Window.bind(mouse_pos=lambda w, p: setattr(Shared, 'mouse_pos', p))


MyApp().run()

MyWidget.py

from kivy.uix.widget import Widget

from Shared import Shared

class MyWidget(Widget):
    def on_touch_down(self, touch):
        print (Shared.mouse_pos)

Shared.py

class Shared: pass