314                 if action.option_strings:
442             elif not action.option_strings:
456                 option_string = action.option_strings[0]
552         if not action.option_strings:
563                 parts.extend(action.option_strings)
570                 for option_string in action.option_strings:
700                 if action.option_strings or action.nargs in defaulting_nargs:
728     elif argument.option_strings:
729         return '/'.join(argument.option_strings)
821                  option_strings,  argument
831         self.option_strings = option_strings
857         return self.option_strings[0]
864                  option_strings,  argument
874         for option_string in option_strings:
885             option_strings=_option_strings,
896         if option_string in self.option_strings:
900         return ' | '.join(self.option_strings)
906                  option_strings,  argument
923             option_strings=option_strings,
941                  option_strings,  argument
949             option_strings=option_strings,
964                  option_strings,  argument
970             option_strings=option_strings,
981                  option_strings,  argument
987             option_strings=option_strings,
998                  option_strings,  argument
1015             option_strings=option_strings,
1036                  option_strings,  argument
1044             option_strings=option_strings,
1063                  option_strings,  argument
1069             option_strings=option_strings,
1086                  option_strings,  argument
1091             option_strings=option_strings,
1105                  option_strings,  argument
1111             option_strings=option_strings,
1137             sup.__init__(option_strings=[], dest=dest, help=help,
1141                  option_strings,  argument
1155             option_strings=option_strings,
1461         for option_string in action.option_strings:
1465         for option_string in action.option_strings:
1530         return dict(kwargs, dest=dest, option_strings=[])
1534         option_strings = []
1546             option_strings.append(option_string)
1556                 dest_option_string = option_strings[0]
1564         return dict(kwargs, dest=dest, option_strings=option_strings)
1583         for option_string in action.option_strings:
1608             action.option_strings.remove(option_string)
1613             if not action.option_strings:
1798         action = parsers_class(option_strings=[], **kwargs)
1805         if action.option_strings:
1814                 if action.option_strings]
1819                 if not action.option_strings]
2324         if action.option_strings:
2429             if action.option_strings:
2440               not action.option_strings):