345                 if action.option_strings:
454             elif not action.option_strings:
467                 option_string = action.option_strings[0]
562         if not action.option_strings:
572                 parts.extend(action.option_strings)
579                 for option_string in action.option_strings:
690                 if action.option_strings or action.nargs in defaulting_nargs:
702     elif argument.option_strings:
703         return  '/'.join(argument.option_strings)
793                  option_strings,  argument
803         self.option_strings = option_strings
835                  option_strings,  argument
852             option_strings=option_strings,
870                  option_strings,  argument
878             option_strings=option_strings,
893                  option_strings,  argument
899             option_strings=option_strings,
910                  option_strings,  argument
916             option_strings=option_strings,
927                  option_strings,  argument
944             option_strings=option_strings,
964                  option_strings,  argument
972             option_strings=option_strings,
990                  option_strings,  argument
996             option_strings=option_strings,
1011                  option_strings,  argument
1016             option_strings=option_strings,
1030                  option_strings,  argument
1036             option_strings=option_strings,
1058             sup.__init__(option_strings=[], dest=name, help=help)
1061                  option_strings,  argument
1074             option_strings=option_strings,
1330         for option_string in action.option_strings:
1334         for option_string in action.option_strings:
1399         return dict(kwargs, dest=dest, option_strings=[])
1403         option_strings = []
1414             option_strings.append(option_string)
1426                 dest_option_string = option_strings[0]
1434         return dict(kwargs, dest=dest, option_strings=option_strings)
1453         for option_string in action.option_strings:
1476             action.option_strings.remove(option_string)
1481             if not action.option_strings:
1671         action = parsers_class(option_strings=[], **kwargs)
1678         if action.option_strings:
1687                 if action.option_strings]
1692                 if not action.option_strings]
2172         if action.option_strings:
2189             if action.option_strings:
2200               not action.option_strings):