312                 if action.option_strings:
431             elif not action.option_strings:
444                 option_string = action.option_strings[0]
539         if not action.option_strings:
549                 parts.extend(action.option_strings)
556                 for option_string in action.option_strings:
667                 if action.option_strings or action.nargs in defaulting_nargs:
679     elif argument.option_strings:
680         return  '/'.join(argument.option_strings)
770                  option_strings,  argument
780         self.option_strings = option_strings
812                  option_strings,  argument
829             option_strings=option_strings,
847                  option_strings,  argument
855             option_strings=option_strings,
870                  option_strings,  argument
876             option_strings=option_strings,
887                  option_strings,  argument
893             option_strings=option_strings,
904                  option_strings,  argument
921             option_strings=option_strings,
941                  option_strings,  argument
949             option_strings=option_strings,
967                  option_strings,  argument
973             option_strings=option_strings,
988                  option_strings,  argument
993             option_strings=option_strings,
1007                  option_strings,  argument
1013             option_strings=option_strings,
1035             sup.__init__(option_strings=[], dest=name, help=help)
1038                  option_strings,  argument
1051             option_strings=option_strings,
1333         for option_string in action.option_strings:
1337         for option_string in action.option_strings:
1402         return dict(kwargs, dest=dest, option_strings=[])
1406         option_strings = []
1417             option_strings.append(option_string)
1429                 dest_option_string = option_strings[0]
1437         return dict(kwargs, dest=dest, option_strings=option_strings)
1456         for option_string in action.option_strings:
1479             action.option_strings.remove(option_string)
1484             if not action.option_strings:
1678         action = parsers_class(option_strings=[], **kwargs)
1685         if action.option_strings:
1694                 if action.option_strings]
1699                 if not action.option_strings]
2194         if action.option_strings:
2214             if action.option_strings:
2225               not action.option_strings):