thread模块

最新推荐文章于 2025-01-13 10:30:23 发布

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本文通过两个具体的例子展示了如何使用Python的thread模块来创建和管理多线程程序。第一个例子简单演示了启动两个独立运行的线程并执行基本的打印操作；第二个例子则进一步介绍了如何利用锁来确保线程之间的正确同步。

# -*- coding: UTF-8 -*-
import thread
import time

def loop0():
    print "start loop0 at :" , time.ctime()
    time.sleep(4)
    print "loop0 done at ：", time.ctime()
    
def loop1():
    print "start loop1 at:", time.ctime()
    time.sleep(4)
    print "loop1 done at:", time.ctime()
    
def main():
    print "starting at :", time.ctime()
    thread.start_new_thread(loop0, ())
    thread.start_new_thread(loop1, ())
    time.sleep(6)
    print "all done at: ", time.ctime()
    
if __name__ == "__main__":
    main()

# -*- coding: UTF-8 -*-
import thread
import time

loops = [4, 2]

def loop(nloop, nesc, lock):
    print "start loop", nloop, "at:", time.ctime()
    time.sleep(nesc)
    print "loop", nloop, "done at:", time.ctime()
    lock.release()
    
def main():
    print "starting at ", time.ctime()
    locks = []
    nloops = range(len(loops))
    
    for i in nloops:
        lock = thread.allocate_lock()
        lock.acquire()
        locks.append(lock)
        
    for i in nloops:
        thread.start_new_thread(loop, (i, loops[i], locks[i]))
        
    for i in nloops:
        while locks[i].locked():
            pass
            
    print "all done at:", time.ctime()
    
if __name__ == "__main__":
    main()