Asymmetry in globals __getitem__/__setitem__

[Marko Rauhamaa]

Gregory Ewing <greg.ewing at canterbury.ac.nz>:

> I didn't think that using a custom mapping object for globals was
> officially supported. Has that changed?

The documentation is a bit vague about it:

   If only globals is provided, it must be a dictionary, which will be
   used for both the global and the local variables. If globals and
   locals are given, they are used for the global and local variables,
   respectively. If provided, locals can be any mapping object.

Now, if you define:

   class Namespace(dict):
       ...

A Namespace *is* a dict[ionary] in the classic OOP sense.


Marko