code: def main(args):
      
      args = parse_args(args)
      setup_logging(args.loglevel)
      _logger.debug("Starting crazy calculations...")
      print("The {}-th Fibonacci number is {}".format(args.n, fib(args.n)))
      _logger.info("Script ends here")
docs: Main entry point allowing external calls
  
      Args:
        args ([str]): command line parameter list