exemple_multiproc.py

#!/bin/env python
# coding: utf-8

from multiprocessing import Pool
import time
import subprocess as sp

def print_names(liste_noms):
    for nom in liste_noms:
        time.sleep(1)
        # boucle qui sert à "occuper" le cpu
        c = 0
        n = 5*10**6
        for i in range(n):
          c += i
        print("mon nom est:{}, somme des {} premiers entiers: {}".format(nom, n, c))


def echo_name(nom):
    #return sp.call(["echo", nom], shell=True)
    time.sleep(1)
    # boucle qui sert à "occuper" le cpu
    c = 0
    n = 5*10**6
    for i in range(n):
        c += i
    return sp.call("echo '{}, {}, {}'".format(nom, n, c), shell=True)


def main():
    pool = Pool(processes=2)

    noms_a = ["anna", "andré", "arnaud", "arnold", "anselme", "adeline", "alain"]
    noms_e = ["eric", "eddy", "eli", "emelyne", "edithe", "edmond", "edouard"]

    # go open "htop"
    time.sleep(5)
    # launch processes
    print("\nPremière approche\n")
    pool.map(print_names, [noms_a, noms_e])
    print("\nSeconde approche\n")
    pool.map(echo_name, noms_a + noms_e)


if __name__ == "__main__":
    main()