samwyse <samw...@gmail.com> added the comment:
One change and one minor problem with my suggestion.
First, you don't need the second alias, since it's a prefix of the argument
name. Also, HelpFormatter._format_actions_usage ends with a bit of code
labeled "clean up separators for mutually exclusive groups"; it removes matched
parentheses from the argument names. :( I'd recommend that you instead use
one of the following (all of which I've tested):
parser.add_argument('--verbose[main]', ...)
parser.add_argument('--verbose{main}', ...)
parser.add_argument('--verbose<main>', ...)
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15327>
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