title: how can I start again when pressing image?
body: <p>How can I start again when pressing image?</p>
  <p>I want it to start again when I press the last images or 2/3 second later</p>
  <pre><code>class MyButton(ButtonBehavior, Image):
      def __init__(self, **kwargs):
          super(MyButton, self).__init__(**kwargs)
          self.source = 's'
  
      def on_press(self):
          a = (random.randint(1, 1014124315124124))
          if (int(a) % 2 == 0):
              self.source = 's'
          else:
              self.source = 'd' 
  
  class SampleApp(App):
      def build(self):
          return MyButton()
  
  SampleApp().run()
  </code></pre>