Update itertools recipes to use next().
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 32ad792..6e6b6d9 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -326,14 +326,14 @@
return self
def __next__(self):
while self.currkey == self.tgtkey:
- self.currvalue = next(self.it) # 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 = next(self.it) # Exit on StopIteration
+ self.currvalue = next(self.it) # Exit on StopIteration
self.currkey = self.keyfunc(self.currvalue)
@@ -652,8 +652,7 @@
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = tee(iterable)
- for elem in b:
- break
+ next(b, None)
return zip(a, b)
def grouper(n, iterable, fillvalue=None):