#!/usr/bin/env python

import sys
import time
import threading

class T(threading.Thread):
    def run(self):
        while True:
            time.sleep(1)
            print 'hihi'

class T2(threading.Thread):
    def run(self):
        for i in range(2):
            time.sleep(1)
            print "hi2"
        print "exit in t2"
        sys.exit()

t = T()
print t.isDaemon()
t.start()
t2 = T2()
print t2.isDaemon()
t2.start()
time.sleep(5)
if len(sys.argv)==1:
    print 'exit in main'
    sys.exit()