def build(self):
layout = BoxLayout(orientation='vertical')
self.label = Label(font_size='128dp')
s = datetime.now().isoformat()[11:19]
self.label.text = s
self.label.padding = (10,10)
self.label.size = self.label.texture_size
layout.add_widget(self.label)
button = Button(size_hint=(.5, .5), text='plop',
pos_hint={'x':0.3},on_press=self.play)
layout.add_widget(button)
button.pos_hint_x=0.3
Clock.schedule_interval(self.animate,1/5)
return layout
