code: def format_help(self):
          
          formatter = self._get_formatter()
  
          # usage
          formatter.add_usage(self.usage, self._actions,
                              self._mutually_exclusive_groups)
  
          # description
          formatter.add_text(self.description)
  
          # positionals, optionals and user-defined groups, except SubParsers
          for action_group in self._action_groups:
              if is_subparser(action_group):
                  continue
              formatter.start_section(action_group.title)
              formatter.add_text(action_group.description)
              formatter.add_arguments(action_group._group_actions)
              formatter.end_section()
  
          # epilog
          formatter.add_text(self.epilog)
  
          # determine help from format above
          return formatter.format_help()
docs: Overrides format_help to not print subparsers