def do_help(self, arg):
        if arg:
            funcname = self.func_named(arg)
            if funcname:
                fn = getattr(self, funcname)
                try:
                    fn.optionParser.print_help(file=self.stdout)
                except __HOLE__:
                    cmd.Cmd.do_help(self, funcname[3:])
        else:
            cmd.Cmd.do_help(self, arg)
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/cmd2.py/Cmd.do_help