23 In Python 3 zip returns an iterator instead and needs to be passed to a list function to get the zipped tuples:

10 iter(s) returns an iterator for s. [iter(s)]*n makes a list of n times the same iterator for s. So, when doing zip(*[iter(s)]*n), it extracts an item from all the three iterators from the list in order. Since all the …

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 unpacking that lets you use …

3 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 understanding the …

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 (key,) …

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.

Mar 19, 2019 · zipfile.zip\ dirA.zip\ a dirB.zip\ b dirC.zip\ c I want to extract all the inner zip files that are inside the zip file in directories with these names (dirA, dirB, dirC). Basically, I want to end up with …

Feb 14, 2011 · The itertools library provides "iterators" for common Python functions. From the itertools docs, "Like zip () except that it returns an iterator instead of a list." The I in izip () means "iterator". …

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 23, 2012 · If I have a URL that, when submitted in a web browser, pops up a dialog box to save a zip file, how would I go about catching and downloading this zip file in Python?