312                 if action.option_strings:
427             elif not action.option_strings:
440                 option_string = action.option_strings[0]
535         if not action.option_strings:
545                 parts.extend(action.option_strings)
552                 for option_string in action.option_strings:
663                 if action.option_strings or action.nargs in defaulting_nargs:
675     elif argument.option_strings:
676         return  '/'.join(argument.option_strings)
766                  option_strings,  argument
776         self.option_strings = option_strings
808                  option_strings,  argument
825             option_strings=option_strings,
843                  option_strings,  argument
851             option_strings=option_strings,
866                  option_strings,  argument
872             option_strings=option_strings,
883                  option_strings,  argument
889             option_strings=option_strings,
900                  option_strings,  argument
917             option_strings=option_strings,
937                  option_strings,  argument
945             option_strings=option_strings,
963                  option_strings,  argument
969             option_strings=option_strings,
984                  option_strings,  argument
989             option_strings=option_strings,
1003                  option_strings,  argument
1009             option_strings=option_strings,
1031             sup.__init__(option_strings=[], dest=name, help=help)
1034                  option_strings,  argument
1047             option_strings=option_strings,
1329         for option_string in action.option_strings:
1333         for option_string in action.option_strings:
1398         return dict(kwargs, dest=dest, option_strings=[])
1402         option_strings = []
1413             option_strings.append(option_string)
1425                 dest_option_string = option_strings[0]
1433         return dict(kwargs, dest=dest, option_strings=option_strings)
1452         for option_string in action.option_strings:
1475             action.option_strings.remove(option_string)
1480             if not action.option_strings:
1674         action = parsers_class(option_strings=[], **kwargs)
1681         if action.option_strings:
1690                 if action.option_strings]
1695                 if not action.option_strings]
2190         if action.option_strings:
2210             if action.option_strings:
2221               not action.option_strings):