使用多线程的方式打印 Hello World

#!/usr/bin/env python
#encoding:utf8

import thread

def hello():
    for i in xrange(5):
        w_lock.acquire()
        print ‘Hello‘,
        h_lock.release()

def world():
    for i in xrange(5):
        h_lock.acquire()
        print ‘World‘
        w_lock.release()
    lock.release()

lock = thread.allocate_lock()
lock.acquire()
h_lock = thread.allocate_lock()
w_lock = thread.allocate_lock()
h_lock.acquire()
thread.start_new_thread(hello, ())
thread.start_new_thread(world, ())

while lock.locked():
    pass

[root@localhost ~]# python 1.py
Hello World
Hello World
Hello World
Hello World
Hello World