CLI parsing—with `--help` text—`--foo bar`, how to give additional parameters to `bar`?
Cameron Simpson
cs at cskk.id.au
Thu Oct 15 19:20:40 EDT 2020
On 16Oct2020 10:09, Samuel Marks <samuelmarks at gmail.com> wrote:
>Yes it’s my module, and I’ve been using argparse
>https://github.com/SamuelMarks/ml-params
>
>No library I’ve found provides a solution to CLI argument parsing for my
>use-case.
>
>So I’ll write one. But what should it look like, syntactically and
>semantically?
I would make it look like argparse, if you're using argparse already.
Can argparse be subclassed, eg to override some internal
option-gathering method?
In particular, I would not invent yet another command line syntax.
I'd stick with the common -a and --long-name style, maybe using the -{ -}
stuff you cited from nginx if it meets your needs. As with any
bracketing syntax, you may one day find yourself needing to embed the
literal end-bracket symbol in your command line one day, and thus may
need some kind of escaping notion ("no! not closing the brackets yet!").
I can't offer mch specific advice on argparse, I use getopt myself.
Cheers,
Cameron Simpson <cs at cskk.id.au>
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