Question

Concurrent Powers

The following code returns the results of the integers in a list of values to the power of input p. Rewrite this as concurrent code in Python, using concurrent.futures. In the concurrent version, it is not necessary for results to be printed in the same sequence as is output by the code below.

values = [2,4,6,8,10]

def powers(val,po):

    return val ** po

def non_concurrent_powers(p):

    for val in values:

        res = powers(val,p)

        print('%s to the power of %s is %s' % (val,p,res), '\n')

Answer 1

Hello dear.

Here is the Modified Python program for implementing concurrent code in Python, using concurrent.futures. I have keep the old (non_concurrent_powers() ) mentod also. Created a new function called concurrent_powers(). Hope you will like it.

main.py

from concurrent.futures import ProcessPoolExecutor
from concurrent.futures import as_completed

values = [2,4,6,8,10]

def powers(val,po):
    return val ** po
#non concurrent funtions
def non_concurrent_powers(p):
    for val in values:
        res = powers(val,p)
        print('%s to the power of %s is %s' % (val,p,res), '\n')

#concurrent funtions
def concurrent_powers(p):
    #for map funtion
    ps = [p]*len(values)
    with ProcessPoolExecutor(max_workers= len(values)) as executor:
        #map function is used to apply powers() function to every value in the values, ps arrays.
        results = executor.map(powers, values, ps)
    #print results
    i=0
    for result in results:
        #print(result)
        print('%s to the power of %s is %s' % (values[i],p,result), '\n')
        i+=1


if __name__ == '__main__':
    
    non_concurrent_powers(2)
    concurrent_powers(2)

Output:

2 to the power of 2 is 4 4 to the power of 2 is 16 6 to the power of 2 is 36 8 to the power of 2 is 64 10 to the power of 2 is 100 2 to the power of 2 is 4 4 to the power of 2 is 16 6 to the power of 2 is 36 8 to the power of 2 is 64 10 to the power of 2 is 100 >>|

Image of code:

File Edit Format Run Options Window Help from concurrent. futures import Process PoolExecutor from concurrent. futures import as completed values = [2,4,6,8,10] def powers (val, po): return val ** po #non concurrent funtions def non_concurrent_powers (p): for val in values: res = powers (val,p) print('ss to the power of $s is $s' (val,p,res), '\n') #concurrent funtions def concurrent_powers (p): #for map funtion ps = [p] *len (values) with Process PoolExecutor (max_workers= len (value)) as executor: #map function is used to apply powers() function to every value in the values, ps arrays. results = executor.map (powers, values, ps) #print results i=0 for result in results: #print (result) print('s to the power of $s is $s' (values[i],P, result), '\n') i+=1 if name 1 main non_concurrent_powers (2) concurrent_powers (2) -

Hope you like it.

If you have any doubts ask me in comment section.
If you like my work, please give me a like and feedback. That helps me a lot. Thank you.
All the best.