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chunks
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| def chunks(iterable, n): | |
| """group elements of iterable into chunks of size n and yield an iterator for | |
| each chunk""" | |
| i = iter(iterable) | |
| def groupiter(first): | |
| yield first | |
| for x in range(n-1): | |
| try: | |
| yield next(i) | |
| except StopIteration: | |
| break | |
| for item in i: | |
| yield(groupiter(item)) |
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