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From: Peter Otten <__peter__@web.de>
Subject: Re: Newbie: question regarding references and class relationships
Date: Mon, 10 Jun 2013 17:05:32 +0200
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Xref: csiph.com comp.lang.python:47568

Rui Maciel wrote:

> How do you guarantee that any object of a class has a specific set of
> attributes?

You don't. 

Such a guarantee is like the third wheel on a bike -- it doesn't improve the 
overall experience.

PS: I'd rather not mention the memory-saving technique that is sometimes 
abused, but here goes: <http://docs.python.org/dev/glossary.html#term-slots>