mp

#!/usr/bin/env python
from multiprocessing import Pool
import time

def f(x):
    return x*x

def loop():
    plist = []
    for i in [1,2,3]:
        plist.append(i*i)
    print(plist)

if __name__ == '__main__':
    p = Pool(3)
    start_time = time.time()
    print(p.map(f, [1,2,3]))
    end_time = time.time() - start_time
    print(end_time)
    start_time = time.time()
    loop()
    end_time = time.time() - start_time
    print(end_time)