text: from __future__ import division, print_function, unicode_literals
  
  # This code is so you can run the samples without installing the package
  import sys
  import os
  sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
  #
  
  testinfo = "s, t 4.9, s, t 5.1, s, t 10.1, s, t 10.2, s, q"
  tags = "sequence, MoveBy, Reverse"
  
  import cocos
  from cocos.director import director
  from cocos.actions import Place, MoveBy, Reverse
  from cocos.sprite import Sprite
  
  import pyglet
  
  class TestLayer(cocos.layer.Layer):
      def __init__(self):
          super( TestLayer, self ).__init__()
  
          x,y = director.get_window_size()
  
          self.sprite = Sprite( 'grossini.png', (0,y//2)  )
          self.add( self.sprite )
          seq = MoveBy( (x//2, 0) )
          self.sprite.do( seq + Reverse(seq) )
  
  description  = """
  Sprite starts at the left, goes to center screen and
  then returns to the initial position.
  """
  
  def main():
      print(description)
      director.init()
      test_layer = TestLayer ()
      main_scene = cocos.scene.Scene (test_layer)
      director.run (main_scene)
  
  if __name__ == '__main__':
      main()
  