[Python-Dev] Making builtins more efficient

[Greg Ewing]

Guido van Rossum wrote:

> I don't see why everything that doesn't make sense to be shadowed
> ought to become a keyword.

That wasn't the reason. I was thinking it
would be nice if one could use True and False
instead of 1 and 0 in the knowledge that it
wasn't costing a couple of dictionary lookups.

However, if a more general way is found of
optimising global lookups, this may become a
non-issue.

Greg