I am trying to learn how to "zip" lists. To this end, I have a program, where at a particular point, I do the following: x1, x2, x3 = stuff.calculations(withdataa) This gives me three lists, x1, x...

Mar 19, 2015 · zip([1,2,3],[4,5,6]) Also, note that since Python-3.5 you can use unpacking operators in a few other cases than in function callers. One of which is called in-place …

I'm extremely new to Python so this just recently tripped me up, but it had to do more with how the example was presented and what was emphasized. What gave me problems with …

import operator from functools import reduce def zip_mappings(*mappings): keys_sets = map(set, mappings) common_keys = reduce(set.intersection, keys_sets) for key in common_keys: yield …

Python 2 In Python 2, zip returns a list of tuples. This is fine when foo and bar are not massive. If they are both massive then forming zip(foo,bar) is an unnecessarily massive temporary …

Dec 6, 2009 · 69 How can I create a zip archive of a directory structure in Python? In a Python script In Python 2.7+, shutil has a make_archive function.

In Python 3, zip now returns a lazy iterator, and this is now the most performant approach. dict(zip(keys, values)) does require the one-time global lookup each for dict and zip, but it …

Aug 10, 2010 · I read through the zipfile documentation, but couldn't understand how to unzip a file, only how to zip a file. How do I unzip all the contents of a zip file into the same directory?

Feb 14, 2011 · FYI, Python 3's zip function is Python 2's izip. In general Python 3 changed most functions to use iterators, like range, filter, the dict functions, etc

Q1- I do not understand "for x, y in zip (Class_numbers, students_per_class)". Is it like a 2d for loop? why we need the zip? Can we have 2d loop with out zip function? Q2-I am not …