RetroSearch Browse

Mon Sep 9 17:43:31 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-September/128472.html

I would like time to investigate this further, but at the moment I think it will either make attribute lookup poorly defined or slow.

Of the top of my head, the problem as a I see it is basically this:
Currently, type.__getattribute__() is a fixed point in the lookup of attributes.
The proposal means that a fixed point is not reached until the cls parameter of type.__getattribute__() is either object or type,
otherwise type.__getattribute__() and type.__locallookup__ must bounce back and forth.

This will slow down *every* attribute lookup for what is a fairly obscure use case.

Cheers,
Mark.

On 09/09/13 16:27, Guido van Rossum wrote:
> Let's just accept this PEP. It looks like a nice addition to the metaclass machinery and I don't think we'll get much more useful feedback by waiting.
>
>
> On Mon, Sep 9, 2013 at 7:30 AM, Ethan Furman <ethan at stoneleaf.us <mailto:ethan at stoneleaf.us>> wrote:
>
>     On 07/30/2013 11:17 PM, Ronald Oussoren wrote:
>
>
>         And something I forgot to ask: is anyone willing to be the BDFL-Delegate for
>         PEP 447?
>
>
>     *Bump*.
>
>     It would be nice if this could make into 3.4.
>
>     --
>     ~Ethan~
>
>     _________________________________________________
>     Python-Dev mailing list
>     Python-Dev at python.org <mailto:Python-Dev at python.org>
>     https://mail.python.org/__mailman/listinfo/python-dev <https://mail.python.org/mailman/listinfo/python-dev>
>     Unsubscribe: https://mail.python.org/__mailman/options/python-dev/__guido%40python.org <https://mail.python.org/mailman/options/python-dev/guido%40python.org>
>
>
>
>
> --
> --Guido van Rossum (python.org/~guido <http://python.org/~guido>)
>
>
> _______________________________________________
> Python-Dev mailing list
> Python-Dev at python.org
> https://mail.python.org/mailman/listinfo/python-dev
> Unsubscribe: https://mail.python.org/mailman/options/python-dev/mark%40hotpy.org
>

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://mail.python.org/pipermail/python-dev/2013-September/128472.html below:

[Python-Dev] PEP 447: add type.locallookup

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://mail.python.org/pipermail/python-dev/2013-September/128472.html below:

[Python-Dev] PEP 447: add type.__locallookup__

[Python-Dev] PEP 447: add type.locallookup