python 多线程读取一个文本,相互应该如何协调，python多线程,python 多线程读取

可以把文件描述符当做临界资源，代码如下：

#python3import threadingimport timemutex = threading.Lock()fp = open('content')class Reader(threading.Thread):    def __init__(self, num):        super().__init__()        self.num = num    def run(self):        while True:            with mutex:                line = fp.readline()                if len(line) == 0:                    return                print('%d:%s' % (self.num, line), end='')            time.sleep(0.1)if __name__ == '__main__':    r1 = Reader(1)    r2 = Reader(2)    r1.start()    r2.start()    r1.join()    r2.join()

谢谢题主，因为这道题，我看到了Locks also support the context manager protocol.
http://docs.python.org/3.3/library/threading.html?highlight=lock#lock-objects

最简单的策略就是用“锁”了，可以看下fcntl。

一起读不用加锁。。。又不是写