Best way to set/get an object property

[Peter Otten]

Hussein B wrote:

> I noted that Python encourage the usage of:
> --
> obj.prop = data
> x = obj.prop
> --
> to set/get an object's property value.
> What if I want to run some logic upon setting/getting a property?
> What is Python preferred method to do so (using the new feature
> 'property')?
> I don't think __getattr__ and __setattr__ are practical (I have to
> code the property name into them).

Hussein, I don't think you'll learn much from asking these abstract
questions. At some point you have to get your hands dirty and write actual
code to get a feel for the language. 

For example, it will then become obvious for you that property works best
for individual attributes while __getattr__ and friends are more convenient
if you want to treat multiple attributes the same way, attributes whose
names may not even be known until runtime (think delegation).

Peter