Clize 3.0b1: An argument parser that draws a CLI from your function sigature

Chris Angelico rosuav at
Tue Apr 28 02:03:36 CEST 2015

On Mon, Apr 27, 2015 at 7:02 PM, Yann Kaiser <kaiser.yann at> wrote:
> Hello everyone!
> After a few years in development, I am proud to say Clize is landing its
> feet again and is now in beta for an upcoming release.
> You can try it out using    pip install --user clize=3.0b1    and you can
> browse the docs at
> For those who'd like an explanation before clicking links, here's Clize's
> 5-bullet point explanation:
> * Command-line interfaces are created by passing functions to ``.
> * Parameter types are deduced from the functions' parameters.
> * A ``--help`` message is generated from your docstrings. (Why does this
> still need to be a bullet point?)
> * Decorators can be used to reuse functionality across functions.
> * Clize can be extended with new parameter behavior.

Interesting. I've also been working on a simpler arg handling module;
maybe we can work together. The goals for mine are:

* Each function should be as independent as possible.
* Minimize repetition (of names, descriptions, etc)
* Keep everything in the function signature
* Simplify the basic and obvious usages

There's a demo file in the source repo, plus here are a couple of
actual usage examples:

The latter is an existing module in an existing project, and it grew a
command-line interface with minimal changes, eg:

Can we merge our plans and make a single module that's more likely to
be maintained long-term? No point over-duplicating!


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