[Python-Dev] Explicit Lexical Scoping (pre-PEP?)

[Andrew Koenig]

> So, if I understand correctly, in the presence of a global statement
> search
> just goes up the lexical chain looking for the first occurrence of the
> variable to modify?
> 
>     x = 0
>     def f():
>         x = 1
>         def g():
>             global x
>             x = 2
>             print x
>         g()
>         print x
>     f()
>     print x
> 
> Today it prints
> 
>     2
>     1
>     2
> 
> You're suggesting it will print
> 
>     2
>     2
>     0
> 
> ?

Sounds right to me.

> Sounds reasonable to me.  If we're talking py3k I'd chuck "global" as a
> keyword though and replace it with something like "outer".

I must say that I don't like "outer" any more than I like "global."  The
problem is that in both cases we are selecting the *inner*most definition
that isn't in the current scope.