def cmd_list(self, argv, help):
        """Return a list of various things"""
        parser = argparse.ArgumentParser(
            prog="%s list" % self.progname,
            description=help,
        )
        parser.add_argument("list", nargs=1,
                            metavar="listname",
                            help="Name of list to show.",
                            choices=sorted(self.list_cmds))
        parser.add_argument("listopts",
                            metavar="...",
                            nargs=argparse.REMAINDER,
                            help="list command options")
        args = parser.parse_args(argv)
        for name, func in sorted(self.list_cmds[args.list[0]]):
            func(args.listopts, func.__doc__)
Return a list of various things