New submission from Samwyse <samw...@gmail.com>:
Using the prefix_chars argument to parser.add_argument_group causes usage information to print correctly, but the resulting parser doesn't recognize the options. The included program reproduces the issue; it produces the following output on my system. --- python version 3.6.8 (default, Sep 26 2019, 11:57:09) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] --- test using prefix_chars='-/' with ArgumentParser --- show help info usage: test-1 [-h] [-foo FOO] [/bar BAR] optional arguments: -h, --help show this help message and exit -foo FOO /bar BAR --- try parsing something Namespace(bar='b', foo='f') --- test using prefix_chars='-/' with an argument group --- show help info usage: test-2 [-h] [-foo FOO] [/bar BAR] optional arguments: -h, --help show this help message and exit other arguments: -foo FOO /bar BAR --- try parsing something usage: test-2 [-h] [-foo FOO] [/bar BAR] test-2: error: unrecognized arguments: /bar b ---------- components: Library (Lib) files: argparser-bug.py messages: 405217 nosy: samwyse priority: normal severity: normal status: open title: argparse bug: prefix_chars argument to add_argument_group doesn't really work type: behavior versions: Python 3.6 Added file: https://bugs.python.org/file50410/argparser-bug.py _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45656> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
