[Python-Dev] Keyword-only parameters

[Paul Sokolovsky]

Hello,

On Tue, 14 Apr 2015 13:40:40 -0400
"Eric V. Smith" <eric at trueblade.com> wrote:

> I'm working on adding a numeric_owner parameter to some tarfile
> methods (http://bugs.python.org/issue23193),
> 
> In a review, Berker suggested making the parameter keyword-only. I
> agree that you'd likely never want to pass just "True", but that
> "numeric_owner=True" would be a better usage.
> 
> But, I don't see a lot of keyword-only parameters being added to
> stdlib code.

Well, majority of stdlib is stable, why would somebody suddenly
go and start adding some novelty to otherwise stable and consistent
API? But newer parts of stdlib, e.g. asyncio, visibly overuse
kw-only args.

> Is there some position we've taken on this? Barring
> someone saying "stdlib APIs shouldn't contain keyword-only params",
> I'm inclined to make numeric_owner keyword-only.
> 
> Is there anything stopping me from making it keyword-only?
> 
> Thanks.
> Eric.


-- 
Best regards,
 Paul                          mailto:pmiscml at gmail.com