# -*- coding: utf-8 -*-

import threading, time

eve = threading.Event()
class ready(threading.Thread):
    def run(self):
        print 'Ready'
        eve.set()

class waitAndStart(threading.Thread):
    def run(self):
        print self.getName(), 'wating...'
        eve.wait()
        print self.getName(), 'start'

thList = []

for i in range(3):
    thList.append(waitAndStart())
    thList[i].start()
    
ready().start()

for th in thList:
    th.join()

print 'exit'