diff options
| -rw-r--r-- | Lib/argparse.py | 2 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2025-05-31-12-08-12.gh-issue-134970.lgSaxq.rst | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/Lib/argparse.py b/Lib/argparse.py index d1a6350..83258cf 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -1534,7 +1534,7 @@ class _ActionsContainer(object): action_name = kwargs.get('action') action_class = self._pop_action_class(kwargs) if not callable(action_class): - raise ValueError('unknown action {action_class!r}') + raise ValueError(f'unknown action {action_class!r}') action = action_class(**kwargs) # raise an error if action for positional argument does not diff --git a/Misc/NEWS.d/next/Library/2025-05-31-12-08-12.gh-issue-134970.lgSaxq.rst b/Misc/NEWS.d/next/Library/2025-05-31-12-08-12.gh-issue-134970.lgSaxq.rst new file mode 100644 index 0000000..20f5356 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-05-31-12-08-12.gh-issue-134970.lgSaxq.rst @@ -0,0 +1,3 @@ +Fix the "unknown action" exception in +:meth:`argparse.ArgumentParser.add_argument_group` to correctly replace the +action class. |