CODEWITHSUNDEEP
pythonpython-3.xmultiprocessingpython-multiprocessing
Aphrodite
Aphrodite

Reputation: 121

Multiprocessing.Pool.Map Does Not Do Anything

I was trying out multiprocessing because I was trying to imitate an internet and how it's nodes work. I am fine with the basic functionality so I looked on the documentation and used the most basic example on the 3.7.0 documentation, the version I am using now. To my surprise, it didn't work. I am using a Mac OS High Sierra, version 10.13.6, if it has to do with anything. Here is the code for clarity:

from multiprocessing import Pool

def f(x):
    return x*x

if __name__ == '__main__':
    with Pool(5) as p:
        print(p.map(f, [1, 2, 3]))

I was wondering why it didn't work, as it didn't show anything, and would want the working version, thank you.

For Those Who Doubt It

Upvotes: 2

Views: 2058

Answers (3)

Ethan
Ethan

Reputation: 11

pip install multiprocess

from multiprocess import Pool

I used multiprocessing package like most people, but it didn't work. So I tried multiprocess package, and it worked well.

Upvotes: 1

Anon
Anon

Reputation: 629

For me, the issue was using:

random.seed = <SOME INT>

along with any form of multiprocessing.

Upvotes: 0

nz_21
nz_21

Reputation: 7343

The screenshot indicates that you've opened up your interpreter for some reason.

Run your file like so: python3 main.py

Upvotes: 0

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