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egnha/pairs.py

Last active December 13, 2019 11:23
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Lazy consecutive pairs
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pairs.py
from itertools import islice, tee
def pairs(xs):
"""a, b, c, d, ... -> (a, b), (c, d), ..."""
fst, snd = (islice(_xs, start, None, 2) for start, _xs in enumerate(tee(xs)))
return zip(fst, snd)
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