diff options
Diffstat (limited to 'Lib/argparse.py')
| -rw-r--r-- | Lib/argparse.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/argparse.py b/Lib/argparse.py index 798766f6c40..ef888f063b3 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -1154,6 +1154,12 @@ class _SubParsersAction(Action): vars(namespace).setdefault(_UNRECOGNIZED_ARGS_ATTR, []) getattr(namespace, _UNRECOGNIZED_ARGS_ATTR).extend(arg_strings) +class _ExtendAction(_AppendAction): + def __call__(self, parser, namespace, values, option_string=None): + items = getattr(namespace, self.dest, None) + items = _copy_items(items) + items.extend(values) + setattr(namespace, self.dest, items) # ============== # Type classes @@ -1262,6 +1268,7 @@ class _ActionsContainer(object): self.register('action', 'help', _HelpAction) self.register('action', 'version', _VersionAction) self.register('action', 'parsers', _SubParsersAction) + self.register('action', 'extend', _ExtendAction) # raise an exception if the conflict handler is invalid self._get_handler() |