'It\'s too dangerous to use `-y` and `-r` together.'

def _add_conflicting_arguments(self):

    group = self._parser.add_mutually_exclusive_group()
    group.add_argument('-y', '--yes', action='store_true', help='execute    fixed    command    without    confirmation')
    group.add_argument('-r', '--repeat', action='store_true', help='repeat    on    failure')
