[Tutor] classproperty: readonly and inheritance - not more needed

[Steven D'Aprano]

On Thu, Apr 20, 2017 at 10:39:57AM +0200, Thomas Güttler wrote:

> >- its hard to get classproperty to work right.
> 
> What is "righ"?
> 
> In my case a read-only classproperty is enough. Inheritance should be 
> supported.
> 
> I don't have a usecase for a setter.

The standard library is not just for you :-)

If Peter's solution is "good enough" for you, then great, go ahead and 
use it. But beware: of the two implementations I know, you cannot have 
both:

- access from instances;
- read-only property;

You can have access from instances, but then the classproperty is not 
read-only. Or you can have read-only access, but only from the class 
object.

Although I haven't studied Eryksun's solution yet, he may have found a 
work-around.

Good luck!


-- 
Steve