[Python-Dev] PEP 289 - Generator Expressions - Let's Move Forward

[Armin Rigo]

Hello Guido,

On Mon, May 03, 2004 at 10:14:04AM -0700, Guido van Rossum wrote:
> (...) these new
> semantics are unlike anything seen before in Python: transformations
> that require a definition of "free variables" are not seen anywhere
> else (nested scopes use a different concept).

I think I see your point, although I'm not sure I see how nested scopes work
if not with free variables ( = variables used but not bound in the current
scope).


Armin