New submission from Colin Morris: Small example:
import argparse parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter) parser.add_argument('--no-foo', dest='foo', action='store_false', help="Suppress foo") args = parser.parse_args() print('foo = {}'.format(args.foo)) Output with "-h": optional arguments: -h, --help show this help message and exit --no-foo Suppress foo (default: True) A reasonable person reading that would think that we suppress foo by default. But actually, foo is True by default - "--no-foo" is off by default. I would suggest that if action='store_false', the default value reported by the formatter should be flipped. ---------- components: Library (Lib) messages: 266602 nosy: Colin Morris priority: normal severity: normal status: open title: Default value shown by argparse.ArgumentDefaultsHelpFormatter is backwards for action='store_false' type: behavior versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27153> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com