Python pool not working in windows but works in linux

If the multiprocessing.Pool is not working in Windows but works in Linux, it could be due to the way Windows handles process forking compared to Linux. Windows does not support the fork() system call, which is used by multiprocessing module in Python for creating child processes.

To work around this issue, you can try using the spawn or forkserver start method when creating the multiprocessing.Pool object. Here's an example:

pythonCopy code
import multiprocessing



def worker(x):

    return x*x



if __name__ == '__main__':

    # Use 'spawn' or 'forkserver' start method

    multiprocessing.set_start_method('spawn')



    with multiprocessing.Pool() as pool:

        results = pool.map(worker, range(10))

        print(results)

By setting the start method to 'spawn' or 'forkserver', the multiprocessing module will create new Python interpreter processes using the subprocess module, which works in both Windows and Linux environments.

Try running your code with this modification and see if it resolves the issue on Windows.