[Python-Dev] Namespaces

[Martin v. Loewis]

Aahz <aahz@pythoncraft.com> writes:

>     Rebinding a <foo> does not affect the originally bound object
>     (unless the originally bound object's reference count goes to zero).
> 
> Any ideas about what to call <foo>?  (Calling it a binding sounds a
> little too self-referential.)

That is a "name".

> > Furthermore, some attributes live in multiple namespaces. Given
> > 
> >   obj.name
> > 
> > what namespace is considered to find the name? NOT the namespace of
> > obj, alone - Python also considers the namespace of obj's class (if
> > obj is an instance), of the base classes, etc. OTOH,
> > 
> >   obj.name = None
> > 
> > modifies the namespace of obj (unless name is a computed attribute).

I'm saying that name lookup considers multiple namespaces in some
cases:

>>> class X:
...   name = 1
...
>>> x.name
1
>>> x.__dict__.has_key("name")
0

So saying that x.name yields the value from searching the name in the
namespace of x is wrong.

Regards,
Martin