IntSpan?

[Don Garrett]

Chris Liechti wrote:
> using xrange instead of range does not allocate a list but generates
> the vaulues when they're needed.
> 
> chris

  While xrange is an excellent optimization in some cases, it's not quite the
same thing as a list, so there are a number of things you can't do that seem
relevant.

  For a non-working example:

  xrange(1, 500) + xrange(600, 700)


--
Don Garrett                             http://www.bgb.cc/garrett/
BGB Consulting                                      garrett at bgb.cc