code: def formatter_factory(show_defaults=True):
      
      def get_help_string(self, action):
          lhelp = action.help
          if isinstance(show_defaults, (list, tuple)):
              if "-" + action.dest in show_defaults:
                  return lhelp
          if '%(default)' not in action.help:
              if action.default is not argparse.SUPPRESS:
                  defaulting_nargs = [argparse.OPTIONAL, argparse.ZERO_OR_MORE]
                  if action.option_strings or action.nargs in defaulting_nargs:
                      lhelp += ' (default: %(default)s)'
          return lhelp
  
      def default_help_string(self, action):
          return action.help
      if show_defaults is True:
          ARPIFormatter._get_help_string = classmethod(get_help_string)
      else:
          ARPIFormatter._get_help_string = classmethod(default_help_string)
      return ARPIFormatter
docs: Formatter factory