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from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.slider import Slider
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.lang import Builder

class MyApp(App):
    def build(self):
        return Builder.load_file('my.kv')

MyApp().run()