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], [7]] ''' 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 Fri, Jun 29, 2012 at 11:32 PM, Georg Brandl <g.br...@gmx.net<javascript:>> wrote:
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 -
http://stackoverflow.com/questions/312443/how-do-you-split-a-list-into-evenl...
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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