old_contents: #! /usr/bin/python2
  
  class Main:
      def __init__(self):
          print "this is genom program."
  
  if __name__ == "__main__":
      main = Main()
  
new_contents: #! /usr/bin/python2
  
  import gp
  
  class Main:
      def __init__(self):
          print "this is genom program."
  
  if __name__ == "__main__":
      main = Main()
      random1 = gp.makerandomtree(2)
      random1.display()
      hiddenset = gp.buildhiddenset()
      print gp.scorefunction(random1,hiddenset)
  
subject: add main script