Jun 11, 2012 · The Python 2 documentation says: Built-in Functions: map (function, iterable, ...) Apply function to every item of iterable and return a list of the results. If additional iterable arguments are pa...

Sep 1, 2012 · Mutating Dictionary Values In Place Using Zip And Map Here is how I handle the situation of wanting to mutate the values of a dictionary using map without creating a new data structure or second dictionary.

Dec 20, 2011 · I am trying to map the str.split function to an array of string. namely, I would like to split all the strings in a string array that follow the same format. Any idea how to do that with map in pyt...

May 23, 2018 · Is there a way to use map() function with a string instead of a list? Or the map() function is meant only to work with lists? For instance, ignoring the content of the lambda function, this code r...

I'm doing this switchboard thing in python where I need to keep track of who's talking to whom, so if Alice --> Bob, then that implies that Bob --> Alice. Yes, I could populate two hash maps, but...

Mar 19, 2019 · Is there any way to map list items to a function along with arguments? I have a list: pages = [p1, p2, p3, p4, p5...] And I have to call function myFunc corresponding to each list elements along w...

Dec 21, 2017 · In Python 3, it was "demoted" to the functools module, as it is rarely used when compared to the map pattern. The sum built-in itself employs the "reduce" pattern alone - but if you were to explicitly recreate sum using the reduce pattern it goes like:

Note that as you don't need the result of filtered list and you just want to pass it to map it's more efficient that use ifilter because it returns a generator and you can save much memory for long lists ;) (its all in python 2 and in python 3 filter returns generator)

In Python 3+, many processes that iterate over iterables return iterators themselves. In most cases, this ends up saving memory, and should make things go faster. If all you're going to do is iterate over this list eventually, there's no need to even convert it to a list, because you can still iterate over the map object like so: # Prints "ABCD"

I'm looking for a simple process-based parallel map for python, that is, a function parmap (function, [data]) that would run function on each element of [data] on a different process (well, on a dif...