import threading

import threading

threading.Thread(target=fun, args=())

作用产生一个线程对象

线程对象方法：

start()

启动线程

join（）

自旋锁

import threadingimport timedef t(n):    print '22222'    time.sleep(n)    print 'ddddd't=threading.Thread(target=t,args=(5,))t.start()t.join()print 'sssss'  

import threadingimport timedef t(n):    print '22222'    time.sleep(n)    print 'ddddd'def th(n):    print '22222'    time.sleep(n)    print 'ddddd't=threading.Thread(target=t,args=(5,))th=threading.Thread(target=th,args=(3,))t.start()th.start()t.join()th.join()print 'sssss'