Lines Matching refs:OPTIONAL

137 OPTIONAL = '?'  variable
604         elif action.nargs == OPTIONAL:
689                 defaulting_nargs = [OPTIONAL, ZERO_OR_MORE]
849         if const is not None and nargs != OPTIONAL:
850             raise ValueError('nargs must be %r to supply const' % OPTIONAL)
941         if const is not None and nargs != OPTIONAL:
942             raise ValueError('nargs must be %r to supply const' % OPTIONAL)
1393         if kwargs.get('nargs') not in [OPTIONAL, ZERO_OR_MORE]:
2011                 OPTIONAL: _('expected at most one argument'),
2148         elif nargs == OPTIONAL:
2188         if not arg_strings and action.nargs == OPTIONAL:
2208         elif len(arg_strings) == 1 and action.nargs in [None, OPTIONAL]: