python怎样结束多进程 python多进程不结束

1.方法一    http://hi.baidu.com/javalang/item/72fabf2359a30b464799625e

也就是说当线程使用start方法运行起来后，只有当run方法运行结束，一个线程才会结束。

import threading
from threading import Thread
import time
class MyThread(Thread):
    over=False
    def __init__(self):
        Thread.__init__(self)    def run(self):
        while not self.over:
            print "hello"
            time.sleep(2)
    def kill(self):
        self.over=Trueif __name__=='__main__':
    t=MyThread()
    t.start()
    print 'wait 5s'
    time.sleep(5)
    t.kill()

该方法适合run()方法中不包含死循环程序，若run()包含死循环，则此方法无法结束该线程

 

2.方法二

import threading
import thread
import time
import os
import urllibdef timer():
    time_start = time.time()
    while(1):
    time_end = time.time()
    if ((time_end - time_start) > 4):
        return 1def printf():
    i = 0
    while(1):
        i = i + 1
        print i
        time.sleep(1)def run():
    sub_thread1 = thread.start_new_thread(printf,())
    try:
    if(timer()):
        sub_thread1.exit()
    except AttributeError:
        pass
    print "stop\n"
    print "success\n"if __name__=='__main__':
    run()

开一个线程，该线程为死循环，则使用Thread类的exit方法可以退出，一般情况建议使用Thread.threading

若子线程触发了一个新的进程，则此方法无效，需使用父进程杀死该子进程

方法三：

import threading
import thread
import time
import os
import urllibdef timer():
    time_start = time.time()
    while(1):
    time_end = time.time()
    if ((time_end - time_start) > 10):
        return 1def printf():
    i = 0
    while(1):
        i = i + 1
        print i
        time.sleep(1)
        #if(i > 15):
        #    breakdef run(filename):
    sub_thread = thread.start_new_thread(os.system,('java -jar'+' '+ filename,))
    try:
        if(timer()):
        sub_thread.exit()
        except AttributeError:
            pass
        tasks = os.popen('jps -m').readlines()
        #print tasks
         found_task = ""
         PID_end_position = 0
         for task in tasks:
             if filename[3:] in task:
                 found_task = task
                 PID_end_position = found_task.find(filename[3:]) - 1
                 break
             if found_task:
             PID = found_task[0 : PID_end_position]
             os.system("taskkill /f /PID " + PID)
             time.sleep(3)
             os.system('del /f'+' '+filename)if __name__=='__main__':
            run('D:\\ba-finance-tuangou-bp-job-1.0.1-SNAPSHOT.jar')