import multiprocessing as mp

pool = mp.Pool(processes=7, maxtasksperchild=1)

all_items = [pool.apply_async(sub_process, args=(value,) for value in all_values]
for item in all_items:
    item.get()

import multiprocessing
import logging
import sys
logger = logging.getLogger("mylogger")

formatter = logging.Formatter('%(processName)s %(threadName)s [%(levelname)s] %(message)s')

handler = logging.StreamHandler(stream=sys.stdout)
handler.setFormatter(formatter)
handler.setLevel(logging.DEBUG)

logger.addHandler(handler)
logger.setLevel(logging.DEBUG)

def f(x):
    logger.info(multiprocessing.current_process())
    return x * x

if __name__ == "__main__":
    logger.info("get started")
    p = multiprocessing.Pool()
    p.map(f, range(6))
    logger.info("done")

MainProcess MainThread [INFO] get started
ForkPoolWorker-1 MainThread [INFO] <ForkProcess(ForkPoolWorker-1, started daemon)>
ForkPoolWorker-2 MainThread [INFO] <ForkProcess(ForkPoolWorker-2, started daemon)>
ForkPoolWorker-3 MainThread [INFO] <ForkProcess(ForkPoolWorker-3, started daemon)>
ForkPoolWorker-1 MainThread [INFO] <ForkProcess(ForkPoolWorker-1, started daemon)>
ForkPoolWorker-4 MainThread [INFO] <ForkProcess(ForkPoolWorker-4, started daemon)>
ForkPoolWorker-2 MainThread [INFO] <ForkProcess(ForkPoolWorker-2, started daemon)>
MainProcess MainThread [INFO] done

import os

parent_pid = os.getpid()
print "[parent] starts PID: %d" % (parent_pid, )

from multiprocessing import Process
import os

def info(title):
    print(title)
    print('module name:', __name__)
    print('parent process:', os.getppid())
    print('process id:', os.getpid())

from multiprocessing import current_process
print(current_process().name == 'MainProcess')