[Python-ideas] itertools.chunks(iterable, size, fill=None)
miki.tebeka at gmail.com
Sat Sep 1 16:42:19 CEST 2012
See the "grouper" example in http://docs.python.org/library/itertools.html
On Friday, August 31, 2012 11:28:33 PM UTC-7, anatoly techtonik wrote:
> I've run into the necessity of implementing chunks() again. Here is
> the code I've made from scratch.
> def chunks(seq, size):
> '''Cut sequence into chunks of given size. If `seq` length is
> not divisible by `size` without reminder, last chunk will
> have length less than size.
> >>> list( chunks([1,2,3,4,5,6,7], 3) )
> [[1, 2, 3], [4, 5, 6], ]
> endlen = len(seq)//size
> for i in range(endlen):
> yield [seq[i*size+n] for n in range(size)]
> if len(seq) % size:
> yield seq[endlen*size:]
> anatoly t.
> > On 26.06.2012 10:03, anatoly techtonik wrote:
> >> Now that Python 3 is all about iterators (which is a user killer
> >> feature for Python according to StackOverflow -
> >> http://stackoverflow.com/questions/tagged/python) would it be nice to
> >> introduce more first class functions to work with them? One function
> >> to be exact to split string into chunks.
> >> itertools.chunks(iterable, size, fill=None)
> >> Which is the 33th most voted Python question on SO -
> >> P.S. CC'ing to python-dev@ to notify about the thread in python-ideas.
> > Anatoly, so far there were no negative votes -- would you care to go
> > another step and propose a patch?
> > Georg
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