Neil Cerutti wrote: > For use in a hand-coded parser I wrote the following simple > iterator with look-ahead. I haven't thought too deeply about what > peek ought to return when the iterator is exhausted. Suggestions > are respectfully requested. As it is, you can't be sure what a > peek() => None signifies until the next iteration unless you > don't expect None in your sequence.
There is a different implementation in the Cookbook already: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/304373 George -- http://mail.python.org/mailman/listinfo/python-list
