On 6 fév, 21:06, [EMAIL PROTECTED] wrote: > Hi all, > > So I understand that properties belong to a class not an instance, but > nonetheless I want to add properties to an instance.
While this is technically possible (I tried a couple years ago), it requires hacking the __getattribute__ method, which is something I would not recommand, not only because it can be tricky, but mostly because this is a very critical path wrt/ perfs. (IIRC it also required using custom descriptors, but I'm not really sure about this last point). > I have a class > which when an instance is created runs some fairly complicated code > and produces a set of names which I'd like to be able to access via > properties. At the moment, I'm using something like obj.getvar(name) > but I'd like to be able to write obj.name. Before new-style classes, we used the __getattr__/__setattr__ hooks for computed attributes. While this approach is now a bit abandonned in favor of descriptors (properties or custom ones), it still works fine, and is probably the best solution to your problem. HTH -- http://mail.python.org/mailman/listinfo/python-list
