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| author | Raymond Hettinger <python@rcn.com> | 2009-02-23 19:32:55 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2009-02-23 19:32:55 (GMT) |
| commit | d47442e3cb9ba6eda8cca49d2f08a192f1f64e9f (patch) | |
| tree | 18d0c19e8ae723f3e269053a1bc3d9710811aeea /Doc/library | |
| parent | 52bc7b85fd70eeaefaaa99a6595f864472a7e83a (diff) | |
| download | cpython-d47442e3cb9ba6eda8cca49d2f08a192f1f64e9f.zip cpython-d47442e3cb9ba6eda8cca49d2f08a192f1f64e9f.tar.gz cpython-d47442e3cb9ba6eda8cca49d2f08a192f1f64e9f.tar.bz2 | |
Update itertools recipes to use next().
Diffstat (limited to 'Doc/library')
| -rw-r--r-- | Doc/library/itertools.rst | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index 299d769..2b1e747 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -321,14 +321,14 @@ loops that truncate the stream. return self def next(self): while self.currkey == self.tgtkey: - self.currvalue = self.it.next() # Exit on StopIteration + self.currvalue = next(self.it) # Exit on StopIteration self.currkey = self.keyfunc(self.currvalue) self.tgtkey = self.currkey return (self.currkey, self._grouper(self.tgtkey)) def _grouper(self, tgtkey): while self.currkey == tgtkey: yield self.currvalue - self.currvalue = self.it.next() # Exit on StopIteration + self.currvalue = next(self.it) # Exit on StopIteration self.currkey = self.keyfunc(self.currvalue) .. versionadded:: 2.4 @@ -378,7 +378,7 @@ loops that truncate the stream. # imap(pow, (2,3,10), (5,2,3)) --> 32 9 1000 iterables = map(iter, iterables) while True: - args = [it.next() for it in iterables] + args = [next(it) for it in iterables] if function is None: yield tuple(args) else: @@ -404,11 +404,11 @@ loops that truncate the stream. # islice('ABCDEFG', 0, None, 2) --> A C E G s = slice(*args) it = iter(xrange(s.start or 0, s.stop or sys.maxint, s.step or 1)) - nexti = it.next() + nexti = next(it) for i, element in enumerate(iterable): if i == nexti: yield element - nexti = it.next() + nexti = next(it) If *start* is ``None``, then iteration starts at zero. If *step* is ``None``, then the step defaults to one. @@ -738,8 +738,7 @@ which incur interpreter overhead. def pairwise(iterable): "s -> (s0,s1), (s1,s2), (s2, s3), ..." a, b = tee(iterable) - for elem in b: - break + next(b, None) return izip(a, b) def grouper(n, iterable, fillvalue=None): |