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 668e1d4..c47aeff 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -1171,6 +1171,13 @@ class _SubParsersAction(Action): aliases = kwargs.pop('aliases', ()) + if name in self._name_parser_map: + raise ArgumentError(self, _('conflicting subparser: %s') % name) + for alias in aliases: + if alias in self._name_parser_map: + raise ArgumentError( + self, _('conflicting subparser alias: %s') % alias) + # create a pseudo-action to hold the choice help if 'help' in kwargs: help = kwargs.pop('help') |