After seeing yet another person asking how to do this on #python (and having needed to do it in the past myself), I&#39;m wondering why itertools doesn&#39;t have a function to break an iterator up into N-sized chunks.<div>
<br></div><div>Existing possible solutions include both the &quot;clever&quot; but somewhat unreadable...</div><div><br></div><div>    batched_iter = zip(*[iter(input_iter)]*n)</div><div><br></div><div>...and the long-form...</div>
<div><br></div><div>    def batch(input_iter, n):</div><div>        input_iter = iter(input_iter)</div><div>        while True:</div><div>            yield [input_iter.next() for _ in range(n)]</div><div><br></div><div>There doesn&#39;t seem, however, to be one clear &quot;right&quot; way to do this. Every time I come up against this task, I go back to itertools expecting one of the grouping functions there to cover it, but they don&#39;t.</div>
<div><br></div><div>It seems like it would be a natural fit for itertools, and it would simplify things like processing of file formats that use a consistent number of lines per entry, et cetera.</div><div><br></div><div>
~Amber</div>