python / multiprocessing test in case a function has multi arguments.

multiprocessing_args.py

from multiprocessing import Pool
import os
import time

start = time.time()


def func(n, a1, a2):
    time.sleep(0.1)
    r = n * a1 + a2
    print('time:{:1.16f} r:{:5d} pid:{}'.format(time.time() - start, r, os.getpid()))
    return r


def wrapper(args):
    return func(*args)


if __name__ == '__main__':
    process = 3
    lst = [(i, 2, 5) for i in range(10)]
    p = Pool(process)
    output = p.map(wrapper, lst)
    print(process)
    print(time.time() - start)
    print(output)