traverseda
/
cpython
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Update itertools recipes to use next().

This commit is contained in:
Raymond Hettinger 2009-02-23 19:38:09 +00:00
parent 6d327b0d53
commit 21315ba9c8
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Doc/library/itertools.rst
View File

@ -326,14 +326,14 @@ loops that truncate the stream.
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 @@ 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 zip(a, b)
def grouper(n, iterable, fillvalue=None):