[Python-Dev] Re: More int/long integration issues

David Abrahams dave@boost-consulting.com
Thu, 20 Mar 2003 16:43:51 -0500

Guido van Rossum <guido@python.org> writes:

> The bytecode compiler should be clever enough to see that you're
> writing
>   for i in range(...): ...
> and that there's no definition of range other than the built-in one
> (this requires a subtle change of language rules); it can then
> substitute an internal equivalent to xrange().

Ouch!  What happens to:

       def foo(seq):
           for x in seq:

       foo(xrange(small, really_big))

if xrange dies??

Dave Abrahams
Boost Consulting