Python队列与多线程及文件锁

# -*- coding: utf-8 -*-
import queue
import threading

mu = threading.Lock()


class Producer(threading.Thread):
    def __init__(self, data_queue, thread_name):
        super(Producer, self).__init__()
        self.data_queue = data_queue
        self.thread_name = thread_name

    def run(self):
        for i in range(30):
            self.data_queue.put(i)
            print "完成生产:{}".format(i)


class Customer(threading.Thread):
    def __init__(self, data_queue, thread_name):
        super(Customer, self).__init__()
        self.data_queue = data_queue
        self.thread_name = thread_name

    def run(self):
        while True:
            if mu.acquire(True):
                try:
                    data = self.data_queue.get(True, 3)
                    print "%s完成消费: %s" % (self.thread_name, data)
                    with open(‘ax.txt‘, ‘a+‘) as f:
                        f.write(‘customer_‘+str(data)+‘\n‘)
                except:
                    self.data_queue.task_done()
                    break
                mu.release()


q = queue.Queue()
producer = Producer(q, ‘Pro‘)
producer.start()
producer.join()
threads = []
for i in range(1, 5):
    name = ‘Cus{}‘.format(i)
    customer = Customer(q, name)
    customer.start()
    threads.append(customer)
for j in threads:
    j.join()

# 创建锁
mu = threading.Lock()
# 加锁
mu.acquire()
# 释放锁
mu.release()