¡@
python Programming Glossary: itertools.izipHow to solve the “Mastermind” guessing game? http://stackoverflow.com/questions/1185634/how-to-solve-the-mastermind-guessing-game g1 g2 matching len set g1 set g2 blacks sum 1 for v1 v2 in itertools.izip g1 g2 if v1 v2 return Pegs blacks matching blacks To make my..
Event Sequences, Recurrent Neural Networks, PyBrain http://stackoverflow.com/questions/12689293/event-sequences-recurrent-neural-networks-pybrain True ds SequentialDataSet INPUTS OUTPUTS for x y in itertools.izip datain dataout ds.newSequence ds.appendLinked tuple x tuple..
sum each value in a list of tuples http://stackoverflow.com/questions/14180866/sum-each-value-in-a-list-of-tuples ms per loop In 18 timeit sum x for x in izip l #prefer itertools.izip 1000 loops best of 3 1.28 ms per loop In 19 timeit map sum zip.. of 3 1.48 ms per loop In 20 timeit map sum izip l #prefer itertools.izip 1000 loops best of 3 1.29 ms per loop share improve this answer..
http://stackoverflow.com/questions/1528711/reading-lines-2-at-a-time import itertools with open fn as f for line line2 in itertools.izip_longest f f fillvalue '' print line line2 Alas izip_longest.. wrapper def natatime itr fillvalue None n 2 return itertools.izip_longest iter itr n fillvalue fillvalue itertools is generally.. None n 2 x itertools.chain iter itr fillvalue n 1 return itertools.izip x n since 2.5 doesn't have the built in next as well as missing..
how can I iterate through two lists in parallel in Python? [duplicate] http://stackoverflow.com/questions/1663807/how-can-i-iterate-through-two-lists-in-parallel-in-python massive temporary variable and should be replaced by itertools.izip or itertools.izip_longest which returns an iterator instead.. variable and should be replaced by itertools.izip or itertools.izip_longest which returns an iterator instead of a list. import.. an iterator instead of a list. import itertools for f b in itertools.izip foo bar print f b for f b in itertools.izip_longest foo bar..
Comparing lines of two text files in python [duplicate] http://stackoverflow.com/questions/20660094/comparing-lines-of-two-text-files-in-python entry import itertools filesAreEqual all a b for a b in itertools.izip getRecords file1.txt getRecords file2.txt share improve..
http://stackoverflow.com/questions/2393444/python-double-iteration open file1 as f1 with open file2 as f2 for line1 line2 in itertools.izip f1 f2 if line1 line2 print 'files are different' break with..
Python - Differences between elements of a list http://stackoverflow.com/questions/2400840/python-differences-between-elements-of-a-list
When is not a good time to use python generators? http://stackoverflow.com/questions/245792/when-is-not-a-good-time-to-use-python-generators or an itertools function When should I prefer zip over itertools.izip or range over xrange or x for x in foo over x for x in foo Obviously..
Iterating through a scipy.sparse vector (or matrix) http://stackoverflow.com/questions/4319014/iterating-through-a-scipy-sparse-vector-or-matrix using nonzero . Sven Marnach's suggestion to use itertools.izip also improves the speed. Current fastest is using_tocoo_izip.. i j v def using_tocoo_izip x cx x.tocoo for i j v in itertools.izip cx.row cx.col cx.data i j v N 200 x scipy.sparse.lil_matrix..
http://stackoverflow.com/questions/4628290/pairs-from-single-list previous last element something that can be achieved with itertools.izip_longest . Finally Note that in Python 3.x zip behaves as itertools.izip.. . Finally Note that in Python 3.x zip behaves as itertools.izip and itertools.izip is gone. list zip python slice share improve.. Note that in Python 3.x zip behaves as itertools.izip and itertools.izip is gone. list zip python slice share improve this question..
http://stackoverflow.com/questions/4989763/python-izip-vs-zip izip vs zip When is it better to use zip instead of itertools.izip python itertools share improve this question When you know..
Iterate a list as pair (current, next) in Python http://stackoverflow.com/questions/5434891/iterate-a-list-as-pair-current-next-in-python s2 s2 s3 ... a b itertools.tee iterable next b None return itertools.izip a b How this works First two parallel iterators a and b are..
How to chunk a list in Python 3? http://stackoverflow.com/questions/5850536/how-to-chunk-a-list-in-python-3 2. Why the change in name You might also notice that itertools.izip is now gone in Python 3 that's because in Python 3 the zip built..
Combining itertools and multiprocessing? http://stackoverflow.com/questions/7306522/combining-itertools-and-multiprocessing 256 async_results for finput in grouper_nofill chunksize itertools.izip matrices inds async_results.extend pool.map_async myfunc finput..
|