[Python-Dev] On moving to new-style classes (original) (raw)
Jim Fulton jim at zope.com
Tue Dec 13 16:45:13 CET 2005
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skip at pobox.com wrote:
Jim> For debugging purposes, it's easy to add a property to allow Jim> debugging of attribute assignment.
Assuming you use new-style classes, which I often don't. The property/debug idea that you and Gustavo have both now mentioned makes them a bit more attractive.
Is there a new-style class HOW-TO somewhere?
See http://www.python.org/doc/newstyle.html
It would be useful to summarize the advantages for them. I still have this thought stuck in my head (from where, I don't know, probably incorrect) that one of the main reasons for new-style classes was to get rid of dict.
No, the main benefit is to begin to resolve the class/type dichotomy. Among other benefits, this allows you to subclass types written in C.
Of course, there are other benefits, most notably descriptors, which make properties, among other things, possible.
Jim
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