Python 多进程

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from multiprocessing import  Process

def f(name):
    print (‘hello‘,name)

if __name__ == ‘__main__‘:
    p=Process(target=f,args=(‘freeman‘,))
    p.start()
    p.join()

from multiprocessing import Process,Value,Array

def f(n,a):
    n.value=3.1415972
    for i in range(len(a)):
        a[i] = -a[i]
if __name__ == ‘__main__‘:
    num = Value(‘d‘,0.0)
    arr= Array(‘i‘,range(10))
    p = Process(target=f,args=(num,arr))
    p.start()
    p.join()
    print (num.value)
    print (arr[:])

from multiprocessing import Process,Manager

def f (d,l):
    d[1] =‘1‘
    d[‘2‘] =2
    d[0.25] = None
    l.reverse()

if __name__ == ‘__main__‘:
    manager=Manager()
    d=manager.dict()
    l=manager.list(range(10))
    p =  Process(target=f,args=(d,l))
    p.start()
    p.join()
    print (d)
    print (l)

from multiprocessing import Pool
import time

def f(x):
    time.sleep(1)
    return  x*x
if __name__ == ‘__main__‘:
    pool = Pool(processes=8)
    res_list = []
    for i in range(5):
        p = pool.apply_async(f,[i])
        res_list.append(p)
    for i in res_list:
        print (i.get())

Python 多进程

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原文地址：http://www.cnblogs.com/yjz1/p/5478316.html