[Python-Dev] statically nested scopes

[Tim Peters]

[Barry A. Warsaw]
> If we get lexical scoping, there should be a fast (built-in) way to
> get at all the accessible names from Python.  I.e. currently I can do
>
>     d = globals().copy()
>     d.update(locals())
>
> and know that `d' contains a dictionary of available names, with the
> right overloading semantics.

It was long ago agreed (don't you love how I pull this stuff out of thin
historical air <wink>?) that if nested lexical scoping was added, we would
need also to supply a new mapping object that mimicked the full Python
lookup rules (including builtins).  Not necessarily a dictionary, though.