How to iterate over a list in a for loop in parallel in Python

Question

I have a list which we can iterate using for loop as follows:

myList = ['A', 'B', 'C', 'D']
for elem in myList:
    print("Element = %s" % elem)

The above will iterate the list in sequence. But I want do that in parallel. How to do that? Is it possible to do so without creating any new method? Is it necessary to create any multithreading or multiprocessing?

Please advise. Any example is appreciated

Thanks.

Answer 1

In response to a comment I added, you can use threading to have to functions performing at the same time. You need to import the library, define two functions you want to run simultaneously, then create the threads.

import threading

def func1():
    #Perform one action here
    myList = ['A', 'B', 'C', 'D']
    for elem in myList:
        print("Element = %s" % elem)

def func2():
    #Perform one action here
    myList = ['E', 'F', 'G', 'H']
    for elem in myList:
        print("Element = %s" % elem)

t1 = threading.Thread(target=func1) #Create first thread running the function func1
t2 = threading.Thread(target=func2) #Create second thread running the function func2

#Start the threads
t1.start()
t2.start()

Answer 2

If you want to iterate it in parallel, you have to implement some kind of multitasking. For example, you can create 2 threads, one for the first half ond the other for the second half ([A,B], [C,D])