[Python-Dev] Data descriptor doc/implementation inconsistency

Benjamin Peterson benjamin at python.org
Mon Jan 11 02:00:32 CET 2010

2010/1/10 Amaury Forgeot d'Arc <amauryfa at gmail.com>:
> Quoting the documentation:
> """Normally, data descriptors define both __get__() and __set__(),
> while non-data descriptors have just the __get__() method.
> """
> Your example is neither a data descriptor nor a non-data descriptor...

See the footnote: http://docs.python.org/reference/datamodel#id7

> The thing that worries me a bit is the "x.attr" returning the Descr
> object. Descriptors should remain at the class level, and instance
> should only see values. I'd prefer an AttributeError in this case.

Far too late for that, I'm afraid.


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