In this case since zip's arguments must support iteration you can not use 2 as its argument. Example: import six d dict ( foo1, bar2 ) for k, v in six. It has an iteritems method that will work in both python 2 and 3.
#PYTHON 3 IZIP CODE#
Print(timeit('list(zip(range(100), range(100)))', number=500000)) The six library helps with writing code that is compatible with both python 2.5+ and python 3. In Python 3 the built-in zip does the same job as itertools.izip in 2.X(returns an iterator instead of a list). It works similarly to zip(), but returns an iterator instead of a list. I am trying to write to a csv file: writer.writerows(izip(variable1,2)). Print(timeit('zip(xrange(100), xrange(100))', number=500000)) izip() returns an iterator that combines the elements of the passed iterators into tuples. However after recently changing over from Python 2.7 to 3 - it doesnt seem to work. With this change, the background command works for me. Print(timeit('list(izip(xrange(100), xrange(100)))', For Python 3, you can change iziplongest to ziplongest. Here is a benchmark between zip in Python 2 and 3 and izip in Python 2: The zip implementation is almost completely copy-pasted from the old izip, just with a few names changed and pickle support added. bytes literals, using io.open to replace open, etc.) and use 2to3 for the little things that you can't directly write portably.In Python 3 the built-in zip does the same job as itertools.izip in 2.X(returns an iterator instead of a list). If you must support both, write as portably as you can for Py2 (with all the _future_ imports, explicit u and b prefixes for text vs.At this point Py2 is EOL, so just write for P圓, and.If the passed iterators have different lengths, the iterator with the least items decides the length of the new iterator. You could change all references to view from view to iter to support pre-2.7 Python, though the behavior would differ subtly in some cases (views are iter bles, but not itera tors you can call next on an iterator, but not a non-iterator iterable). The zip () function returns a zip object, which is an iterator of tuples where the first item in each passed iterator is paired together, and then the second item in each passed iterator are paired together etc. Each has been recast in a form suitable for. xrange range map imap zip, izip filter, ifilter. In Python 3 there is no itertools.izip () as the zip () builtin behaves similarly. six.getunboundfunction(meth) Get the function out of unbound method meth. Note that the recommended way to inspect functions and methods is the stdlib inspect module. This will behave identically on 2.7 and 3+ (no copying, always gets a live view). This module implements a number of iterator building blocks inspired by constructs from APL, Haskell, and SML. 1 Answer Sorted by: 24 I guess you use Python 3. Python 3 renamed the attributes of several interpreter data structures. Note: in python 3 izip was renamed to zip and promoted to a builtin replacing the old zip. If for some reason someone still needs to do this and doesn't want to use a compatibility library, a simple approach is to make a top-level callable that calls the correct one by version: from operator import methodcaller zip creates a new list in memory and takes more memory.
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