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 <et...@stoneleaf.us <mailto:et...@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@python.org <mailto:Python-Dev@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@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/mark%40hotpy.org
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