def _handle_conflict_error(self, action, conflicting_actions):
        message = _('conflicting option string(s): %s')
        conflict_string = ', '.join([option_string
                                     for option_string, action
                                     in conflicting_actions])
        raise ArgumentError(action, message % conflict_string)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/argparse/argparse.py/_ActionsContainer._handle_conflict_error/original