paul j3 added the comment: This assertion has triggered several bug issues, either due to an empty group like this, or certain characters in the metavars.
http://bugs.python.org/issue17890 'argparse: mutually exclusive groups full of suppressed args can cause AssertionErrors' http://bugs.python.org/issue11874 'argparse assertion failure with brackets in metavars' http://bugs.python.org/issue16360 'argparse: comma in metavar causes assertion failure when formatting long usage message' I think this is a duplicate of 17890, though I'll have to look more closely at your patch to see what it adds. For 11874 I proposed a major rewrite of the usage formatting. There I format each group and/or action separately, and keep the pieces in a list. That way it's easier to filter out empty pieces, and avoids the complex split that gives headaches when the usage is long enough to wrap. ---------- nosy: +paul.j3 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22363> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
