[Python-porting] Pickling unbound methods on Python 3

["Martin v. Löwis"]

>     I suppose the easiest way to add the information about the defining
>     class is to have the class constructor add a function attribute
>     to the (unbound) method functions. This should be the name of
>     the defining class to avoid circular references.
>
> As a workaround that'll work, yeah. But we were discussing whether we
> can make a real solution. (Unless you were proposing that Python itself
> will do this and not just my program; In that case I'm totally with you,
> but it seems that the Python community isn't.)

What makes you think so? I (personally) have objected to your hackish 
way of scanning the all classes in the module. Adding a function 
attribute is fine with me.

I only wonder if it would be useful to generalize this beyond functions.

Regards,
Martin