code: def run_get_percentage():
      
      description = run_get_percentage.__doc__
      parser = argparse.ArgumentParser(
          prog='get_percentage',
          description=description,
          epilog="Example use: get_percentage 25 100",
      )
      parser.add_argument(
          'a', help='Integer or floating point number that is a percent of another number'
      )
      parser.add_argument(
          'b',
          help='Integer or floating point number of which the first number is a percent',
      )
      args = parser.parse_args()
      print(sm.get_percentage(float(args.a), float(args.b)))
docs: Calculate what percentage a given number is of another,
      e.g. 50 is 50% of 100.