python 多进程例子 | 张志明的个人博客




		
		
			
			
Python
			
			#!/usr/bin/env python
# coding=utf-8

from multiprocessing import Pool
import os,time,random
import subprocess

def long_time_task(name):
    webiste = ['www.baidu.com','www.youku.com','www.tudou.com','www.iqiyi.com','www.google.com','www.503error.com']
    print '---------Run task %s (%s)...' % (name,os.getpid())
    start = time.time()
    time.sleep(2)
    print name
    print webiste[name]
    subprocess.call(['ping','-c','1',webiste[name-1]])
    #print 'Result:',r
    end = time.time()
    print '*********Task %s run %0.2f second' % (name,end-start)


if __name__ =='__main__':
    print 'Parent process %s',os.getpid()
    p = Pool(4)
    for i in range(5):
        p.apply_async(long_time_task, args=(i,)) 
    print 'Waiting all the process'
    p.close()
    p.join()
    print 'All done'
			
				
					
				
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						#!/usr/bin/env python
# coding=utf-8
 
from multiprocessing import Pool
import os,time,random
import subprocess
 
def long_time_task(name):
    webiste = ['www.baidu.com','www.youku.com','www.tudou.com','www.iqiyi.com','www.google.com','www.503error.com']
    print '---------Run task %s (%s)...' % (name,os.getpid())
    start = time.time()
    time.sleep(2)
    print name
    print webiste[name]
    subprocess.call(['ping','-c','1',webiste[name-1]])
    #print 'Result:',r
    end = time.time()
    print '*********Task %s run %0.2f second' % (name,end-start)
 
 
if __name__ =='__main__':
    print 'Parent process %s',os.getpid()
    p = Pool(4)
    for i in range(5):
        p.apply_async(long_time_task, args=(i,)) 
    print 'Waiting all the process'
    p.close()
    p.join()
    print 'All done'
					
				
			
		

 
[zhizhang@zhizhang-desktop-nay test]$ vi myProcessPoll.py

[zhizhang@zhizhang-desktop-nay test]$ cat myProcessPoll.py


		
		
			
			
Python
			
			#!/usr/bin/env python
# coding=utf-8

from multiprocessing import Pool
import os,time,random
import subprocess

def long_time_task(name):
    webiste = ['www.baidu.com','www.youku.com','www.tudou.com','www.iqiyi.com','www.google.com','www.503error.com']
    print '---------Run task %s (%s)...' % (name,os.getpid())
    start = time.time()
    time.sleep(2)
    print name
    print webiste[name]
    subprocess.call(['ping','-c','1',webiste[name-1]])
    #print 'Result:',r
    end = time.time()
    print '*********Task %s run %0.2f second' % (name,end-start)


if __name__ =='__main__':
    print 'Parent process %s',os.getpid()
    p = Pool(4)
    for i in range(5):
        p.apply_async(long_time_task, args=(i,)) 
    print 'Waiting all the process'
    p.close()
    p.join()
    print 'All done'
			
				
					
				
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						#!/usr/bin/env python
# coding=utf-8
 
from multiprocessing import Pool
import os,time,random
import subprocess
 
def long_time_task(name):
    webiste = ['www.baidu.com','www.youku.com','www.tudou.com','www.iqiyi.com','www.google.com','www.503error.com']
    print '---------Run task %s (%s)...' % (name,os.getpid())
    start = time.time()
    time.sleep(2)
    print name
    print webiste[name]
    subprocess.call(['ping','-c','1',webiste[name-1]])
    #print 'Result:',r
    end = time.time()
    print '*********Task %s run %0.2f second' % (name,end-start)
 
 
if __name__ =='__main__':
    print 'Parent process %s',os.getpid()
    p = Pool(4)
    for i in range(5):
        p.apply_async(long_time_task, args=(i,)) 
    print 'Waiting all the process'
    p.close()
    p.join()
    print 'All done'