Created
March 19, 2014 21:30
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| buckets = defaultdict(list) | |
| for z, root in root_from.iteritems(): | |
| closest = next((k for k in buckets if abs(k - root) < 1e-3), None) | |
| if closest: | |
| buckets[closest].append(z) | |
| else: | |
| buckets[root].append(z) | |
| roots = buckets.keys() |
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