Don't use __slots__ (was Re: Problem of Readability of Python)
aahz at pythoncraft.com
Mon Oct 15 17:40:34 CEST 2007
In article <ocudnf2qE6P46JfanZ2dnUVZ_h-vnZ2d at comcast.com>,
Steven Bethard <steven.bethard at gmail.com> wrote:
>> In article <2tqdncU0D6K8v5TanZ2dnUVZ_hGdnZ2d at comcast.com>,
>> Steven Bethard <steven.bethard at gmail.com> wrote:
>>> You can use __slots__ [...]
>> Aaaugh! Don't use __slots__!
>> Seriously, __slots__ are for wizards writing applications with huuuge
>> numbers of object instances (like, millions of instances).
>You clipped me saying that __slots__ are for performance tweaks:
> You can use __slots__ to make objects consume less memory and have
> slightly better attribute-access performance. Classes for objects
> that need such performance tweaks should start like...
>I fully agree that __slots__ are for applications with huge numbers of
>instances. But if you have that situation, you really do want to be
Well, then, just make sure to put big honking warnings up whenever you
mention __slots__. ;-)
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
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