old_contents: __version__='1.9.17'
  
  # import geo
  # import graphics
  # import gui
  # import util
  
  def get_version():
      return __version__
  
  
new_contents: __version__='1.9.18'
  
  # import geo
  # import graphics
  # import gui
  # import util
  
  def get_version():
      return __version__
  
  
subject: Set version to 1.9.18