On: Why Every Language Needs Its Underscore

[andreasvc]

itertools.islice would work.

[Suor → andreasvc]

No it won't, unless you `tee` an iterator first.

[e12e → Suor]

FYI, the official documentation of itertools has its very own pairwise example:

    def pairwise(iterable):
      "s -> (s0,s1), (s1,s2), (s2, s3), ..."
      a, b = tee(iterable)
      next(b, None)
      return izip(a, b)

https://docs.python.org/2/library/itertools.html#itertools.i...

[baq → e12e]

for the record: the official itertools docs have a lot more examples than this one and they're all really worth knowing about if not studying.