new_contents: #!/usr/bin/env python3
  
  import sys
  
  
  def main(args=None):
      """The main routine."""
      if args is None:
          args = sys.argv[1:]
  
      print("This is the main routine.")
      print("It should do something interesting.")
  
      # Do argument parsing here (eg. with argparse) and anything else
      # you want your project to do.
  
  if __name__ == "__main__":
      main()
subject: Add a main script