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Tue Oct 19 04:21:43 CEST 2004 · https://mail.python.org/pipermail/python-dev/2004-October/049478.html

On Monday 18 October 2004 05:39 pm, exarkun at divmod.com wrote:
 >   This breaks down for the perfectly reasonable case of:
...
 >   ie, it breaks down as soon as you try to re-use anything, which is quite
 > surprising to the unsuspecting user, and pretty unfortunate even once you
 > do understand why.

This approach is used to advantage for Zope 3 schema.  If you don't want to 
confuse the ordering, you don't re-use field objects (the things that go in 
schema).  If you don't care about the ordering (because you're going to 
control ordering some other way), you don't need to worry about it.

This is still Python; use what makes sense for your application, but know what 
you're doing.  The "consenting adults" playground expects consenting adults 
to educate themselves.  Good documentation comes in handy with frameworks 
such as these.

  -Fred

-- 
Fred L. Drake, Jr.  <fdrake at acm.org>

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[Python-Dev] ConfigParser shootout, preliminary entry