Chris Jerdonek added the comment: I was referring to the fact that optionals have an additional case that positionals don't have: "Note that for optional arguments, there is an additional case -- the option string is present but not followed by a command-line argument."
(from http://docs.python.org/dev/library/argparse.html#nargs ) >>> p.add_argument('--foo', nargs='*', default=None) >>> p.parse_args([]) Namespace(foo=None) >>> p.parse_args(['--foo']) Namespace(foo=[]) So it could be argued that positionals (at least by default) are behaving like the second case. But that's as far as the parallel goes apparently. *default* affects the first case and not the second case for optional arguments: >>> p.add_argument('--foo', nargs='*', default=False) >>> p.parse_args([]) Namespace(foo=False) >>> p.parse_args(['--foo']) Namespace(foo=[]) ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16878> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
