text: #!/usr/bin/env python
  """Simple pyglet example to manually test event loop integration.
  
  This is meant to run tests manually in ipython as:
  
  In [5]: %gui pyglet
  
  In [6]: %run gui-pyglet.py
  """
  
  import pyglet
  
  
  window = pyglet.window.Window()
  label = pyglet.text.Label('Hello, world',
                            font_name='Times New Roman',
                            font_size=36,
                            x=window.width//2, y=window.height//2,
                            anchor_x='center', anchor_y='center')
  @window.event
  def on_close():
      window.close()
  
  @window.event
  def on_draw():
      window.clear()
      label.draw()
  
  try:
      from IPython.lib.inputhook import enable_pyglet
      enable_pyglet()
  except ImportError:
      pyglet.app.run()
  