code: def enhex_app(parser, cmd, args):  # pragma: no cover
      
  
      parser.add_argument('value', help='the value to hex encode, read from stdin if omitted', nargs='?')
      parser.add_argument(
          '--separator', '-s',
          default='',
          help='the separator to place between hex tuples'
      )
      args = parser.parse_args(args)
      return enhex(pwnypack.main.binary_value_or_stdin(args.value), args.separator)
docs: hex encode a value.