Ian Kelly <ian.g.ke...@gmail.com> writes: > I'd use the maxlen argument to deque here.
Oh that's cool, it's a Python 3 thing though. > Better to move the extra yield above the loop and reorder the loop > body so that the yielded tuple includes the element just read. Thanks, I'll give that a try. >> if len(d) == n: > As written, I don't see how this would ever be false. Yes you're right, I should have left that out, I noticed it after posting. There's another bug too, I think, if the length of the initial iterable is exactly n. I better test that. So this was at best ok as a sketch of the deque approach, not something to actually use ;) > What makes this better than the tee version? Doesn't need all those separate tees, which per Srinivas Devaki would use quadratic space. -- https://mail.python.org/mailman/listinfo/python-list