[issue14037] Allow grouping of argparse subparser commands in help output

[Nick Coghlan]

New submission from Nick Coghlan <ncoghlan at gmail.com>:

I've just started using the argparse subparser feature, and it's very nice. However, I'd love to be able to group the different subparser commands into different sections the way I can group ordinary arguments with add_argument_group().

Initially I thought just calling "parser.add_subparsers()" multiple times with different "title" values would work, but argparse doesn't currently like that - it errors out with "cannot have multiple subparser arguments".

I propose that instead of treating this case as an error, argparse should treat it as a way for defining subparser groups - there would still only be a single subparser argument accepted, but the individual commands would appear grouped appropriately in the help output.

----------
components: Library (Lib)
messages: 153514
nosy: bethard, ncoghlan
priority: normal
severity: normal
stage: needs patch
status: open
title: Allow grouping of argparse subparser commands in help output
type: enhancement
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14037>
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