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devel / comp.lang.python / argparse - 3rd arg only valid for one of two mutually exclusive args?

argparse - 3rd arg only valid for one of two mutually exclusive args?

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From: loris.be...@fu-berlin.de (Loris Bennett)
Newsgroups: comp.lang.python
Subject: argparse - 3rd arg only valid for one of two mutually exclusive args?
Date: Wed, 03 Nov 2021 13:36:07 +0100
Organization: Freie Universitaet Berlin
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by: Loris Bennett - Wed, 3 Nov 2021 12:36 UTC

Hi,

With argparse's add_mutually_exclusive_group() I can add mutually
exclusive args, but how do I deal with a 3rd arg which only makes sense
for one of the mutually exclusive args?

More generally I suppose I am interested in having something like

[ --foo (--foobar) | --bar (--barfoo) ]

if that makes it any clearer.

I have seen subcommand suggested as a way of doing this, but that
doesn't seem like a very good fit for my use-case. Is there a more
argument-orientated alternative?

Cheers,

Loris

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Subject	Author
argparse - 3rd arg only valid for one of two mutually exclusive args?	Loris Bennett