isAlive test

threadtest.py

import threading
import time

class subThread(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
        self.setDaemon(True)
        print "================= sub Listened"

    def run(self):
        print "=================== sub started"
        i = 1
        while i < 1000:
            print "=== sub loop", i
            i += 1
        print "=== sub finish"

class mainThread(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
        self.setDaemon(True)
        print "================= main Listened"
        self.server = subThread()

    def run(self):
        print "=================== main started"
        self.server.start()
        while self.server.isAlive():
            time.sleep(1)
        print "=== main finish"


if __name__=='__main__':
    main = mainThread()
    main.start()
    while main.isAlive():
        time.sleep(5)