root/lib/iters.py @ 1880
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# Iterators
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def flatten(outer_iter): |
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for iter_ in outer_iter: |
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for el in iter_: yield el |
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def flatten_n(outer_iter, depth=2): |
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if depth < 2: return outer_iter |
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elif depth == 2: return flatten(outer_iter) |
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else: return flatten(flatten_n(outer_iter, depth-1)) |