import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.boxlayout import BoxLayout

class MyApp(App):

    def build(self):
        return Label(text=unicode('Temperature Logger'))

class MainScreen(BoxLayout):

    def __init__(self, **kwargs):
        super(MainScreen, self).__init__(**kwargs)
        self.orientation = 'vertical'
        top = new BoxLayout(orientation = 'horizontal')
        self.add_widget(top)
        pass

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