New submission from Steven Bethard <steven.beth...@gmail.com>: >From a private email in respect to the following class of error messages:
>>> parser = argparse.ArgumentParser(prog='PROG') >>> parser.add_argument('--foo') >>> parser.add_argument('--bar') >>> parser.add_argument('ham') >>> parser.add_argument('spam', nargs='+') >>> parser.parse_args(['HAM']) usage: PROG [-h] [--foo FOO] [--bar BAR] ham spam [spam ...] PROG: error: too few arguments ---------------------------------------------------------------------- One suggestion would be that when it displays the error "too few arguments", it would nice if it said something about the argument(s) that are missing. I modified argparse's error message when there are too few arguments. I didn't examine the code a lot, so there might be cases where this doesn't work, but here's what I did: if positionals: self.error(_('too few arguments: %s is required' % positionals[0].dest)) ---------------------------------------------------------------------- This would be a nice feature - I haven't checked if the suggested approach works in general though. ---------- components: Library (Lib) messages: 121220 nosy: bethard priority: normal severity: normal stage: needs patch status: open title: better error message from argparse when positionals missing versions: Python 3.2 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue10424> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com