diff options
Diffstat (limited to 'Lib/argparse.py')
| -rw-r--r-- | Lib/argparse.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Lib/argparse.py b/Lib/argparse.py index e45b67b..a300828 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -593,7 +593,10 @@ class HelpFormatter(object): elif action.nargs == SUPPRESS: result = '' else: - formats = ['%s' for _ in range(action.nargs)] + try: + formats = ['%s' for _ in range(action.nargs)] + except TypeError: + raise ValueError("invalid nargs value") from None result = ' '.join(formats) % get_metavar(action.nargs) return result @@ -850,7 +853,7 @@ class _StoreAction(Action): help=None, metavar=None): if nargs == 0: - raise ValueError('nargs for store actions must be > 0; if you ' + raise ValueError('nargs for store actions must be != 0; if you ' 'have nothing to store, actions such as store ' 'true or store const may be more appropriate') if const is not None and nargs != OPTIONAL: @@ -942,7 +945,7 @@ class _AppendAction(Action): help=None, metavar=None): if nargs == 0: - raise ValueError('nargs for append actions must be > 0; if arg ' + raise ValueError('nargs for append actions must be != 0; if arg ' 'strings are not supplying the value to append, ' 'the append const action may be more appropriate') if const is not None and nargs != OPTIONAL: |