new_contents: #!/usr/bin/env python
  # ----------------------------------------------------------------------------
  # pyglet
  # Copyright (c) 2006-2008 Alex Holkner
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions
  # are met:
  #
  #  * Redistributions of source code must retain the above copyright
  #    notice, this list of conditions and the following disclaimer.
  #  * Redistributions in binary form must reproduce the above copyright
  #    notice, this list of conditions and the following disclaimer in
  #    the documentation and/or other materials provided with the
  #    distribution.
  #  * Neither the name of pyglet nor the names of its
  #    contributors may be used to endorse or promote products
  #    derived from this software without specific prior written
  #    permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  # POSSIBILITY OF SUCH DAMAGE.
  # ----------------------------------------------------------------------------
  
  '''A simple tool that may be used to compare font faces.
  
  Use the left/right cursor keys to change font faces.
  '''
  
  __docformat__ = 'restructuredtext'
  __version__ = '$Id: $'
  import pyglet
  
  FONTS = ['Consolas', 'Andale Mono', 'Inconsolata', 'Inconsolata-dz', 'Monaco',
      'Menlo']
  
  SAMPLE = '''class Spam(object):
  	def __init__(self):
  		# The quick brown fox
  		self.spam = {"jumped": 'over'}
      @the
  	def lazy(self, *dog):
  		self.dog = [lazy, lazy]'''
  
  class Window(pyglet.window.Window):
      font_num = 0
      def on_text_motion(self, motion):
          if motion == pyglet.window.key.MOTION_RIGHT:
              self.font_num += 1
              if self.font_num == len(FONTS):
                  self.font_num = 0
          elif motion == pyglet.window.key.MOTION_LEFT:
              self.font_num -= 1
              if self.font_num < 0:
                  self.font_num = len(FONTS) - 1
  
          face = FONTS[self.font_num]
          self.head = pyglet.text.Label(face, font_size=24, y=0,
              anchor_y='bottom')
          self.text = pyglet.text.Label(SAMPLE, font_name=face, font_size=18,
              y=self.height, anchor_y='top', width=self.width, multiline=True)
  
      def on_draw(self):
          self.clear()
          self.head.draw()
          self.text.draw()
  
  window = Window()
  window.on_text_motion(None)
  pyglet.app.run()
  
subject: add simple font comparison tool in examples