Method returning new instance of class?

["Martin v. Löwis"]

Arthur wrote:
> Essentially I am trying to create a non-destructive tranformation of an
> instance of a class - is one way of putting it.
> 
> The way I am currently conceptualizing a solution, what I need is a method
> of the class that returns a new instance of the class.

So you want a copy of the object. I'd use copy.copy for this, perhaps
copy.deepcopy.

Regards,
Martin