def split_subparser_argument(parent, original, name, condition):
new_sub_parser = argparse._SubParsersAction(original.option_strings,
original._prog_prefix,
original._parser_class,
metavar=original.metavar)
new_sub_parser._name_parser_map = original._name_parser_map
new_sub_parser._choices_actions = [
a for a in original._choices_actions
if condition(original._name_parser_map[a.dest])
]
group = argparse._ArgumentGroup(parent, name)
group._group_actions = [new_sub_parser]
return group
def add_subparsers(parser, **kwargs):
if isinstance(parser, argparse._MutuallyExclusiveGroup):
container = parser._container
if kwargs.get('prog') is None:
formatter = container._get_formatter()
formatter.add_usage(container.usage, [], [], '')
kwargs['prog'] = formatter.format_help().strip()
parsers_class = parser._pop_action_class(kwargs, 'parsers')
subparsers = argparse._SubParsersAction(
option_strings=[], parser_class=type(container), **kwargs)
parser._add_action(subparsers)
else:
subparsers = parser.add_subparsers(dest="applet", metavar="APPLET")
return subparsers
