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by jamesdutc
4480 days ago
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So that flattening can also be written as: x = [[1,2], [3,4], [5,6]]
[x for x in x for x in x]
More perversely, we can also flatten with my invention: list(None for x in x if (yield from x) and False) # Python >=3.3
More reasonably, of course, list(itertools.chain.from_iterable(x))
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