Breaking News: Grepper is joining You.com. Read the official announcement!

python multiprocessing without if name 'main'

Darkstar answered on November 23, 2022 Popularity 10/10 Helpfulness 3/10

answer python multiprocessing without if __name__ '__main__'

python multiprocessing without if name 'main'

Comment

# from multiprocessing import Pool - Note: if you use this, you have to create the process under `if __name__ == '__main__':
from multiprocessing.pool import ThreadPool as Pool
import time

def square(x):
    time.sleep(2)
    return x**2

def cube(x):
    time.sleep(2)
    return x**3

# if __name__ == "__main__": # uncomment this and add indentation on below code, if using Pool instead of ThreadPool
## without mult-processing
t = time.time()
res1 = list(map(square, [x for x in range(10)]))
res2 = list(map(cube, [x for x in range(10)]))
print('Without multi-processing', time.time()-t)


## with multi-processing
p = Pool()
t = time.time()
res1 = p.map_async(square, [x for x in range(10)])
res2 = p.map_async(cube, [x for x in range(10)])
print('With multi-processing', time.time()-t)

t = time.time()
print([res1.get(), res2.get()])
print(f"time took for unpacking result: {time.time()-t}")

Popularity 10/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: python python-multiprocessing

Link to this answer
Share Copy Link

Contributed on Nov 23 2022

Darkstar

0 Answers Avg Quality 2/10

python multiprocessing without if name 'main'

Contents

More Related Answers

python multiprocessing without if name 'main'

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.