314                 if action.option_strings:
439             elif not action.option_strings:
453                 option_string = action.option_strings[0]
548         if not action.option_strings:
559                 parts.extend(action.option_strings)
566                 for option_string in action.option_strings:
696                 if action.option_strings or action.nargs in defaulting_nargs:
724     elif argument.option_strings:
725         return  '/'.join(argument.option_strings)
815                  option_strings,  argument
825         self.option_strings = option_strings
851         return self.option_strings[0]
858                  option_strings,  argument
868         for option_string in option_strings:
879             option_strings=_option_strings,
890         if option_string in self.option_strings:
894         return ' | '.join(self.option_strings)
900                  option_strings,  argument
917             option_strings=option_strings,
935                  option_strings,  argument
943             option_strings=option_strings,
958                  option_strings,  argument
964             option_strings=option_strings,
975                  option_strings,  argument
981             option_strings=option_strings,
992                  option_strings,  argument
1009             option_strings=option_strings,
1030                  option_strings,  argument
1038             option_strings=option_strings,
1057                  option_strings,  argument
1063             option_strings=option_strings,
1080                  option_strings,  argument
1085             option_strings=option_strings,
1099                  option_strings,  argument
1105             option_strings=option_strings,
1131             sup.__init__(option_strings=[], dest=dest, help=help,
1135                  option_strings,  argument
1149             option_strings=option_strings,
1455         for option_string in action.option_strings:
1459         for option_string in action.option_strings:
1524         return dict(kwargs, dest=dest, option_strings=[])
1528         option_strings = []
1540             option_strings.append(option_string)
1550                 dest_option_string = option_strings[0]
1558         return dict(kwargs, dest=dest, option_strings=option_strings)
1577         for option_string in action.option_strings:
1602             action.option_strings.remove(option_string)
1607             if not action.option_strings:
1791         action = parsers_class(option_strings=[], **kwargs)
1798         if action.option_strings:
1807                 if action.option_strings]
1812                 if not action.option_strings]
2317         if action.option_strings:
2422             if action.option_strings:
2433               not action.option_strings):