多线程模板一

# -*- coding: utf-8 -*-

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import time
from queue import Queue
from threading import Thread

class Demo(Thread):
    def __init__(self, queue):
        Thread.__init__(self)
        self.queue = queue

    def run(self):
        while True:
            q_url = self.queue.get()
            try:
                self.parse(q_url)
            finally:
                self.queue.task_done()

    def parse(self, q_url):
        print("开始解析链接:", q_url)

if __name__ == "__main__":
    start = time.time()
    base_url = "https://www.baidu.com/{}.html"
    url_list = [base_url.format(i) for i in range(1, 201)]

    queue = Queue()

    for x in range(20):
        worker = Demo(queue)
        worker.daemon = True
        worker.start()

    for url in url_list:
        queue.put(url)

    queue.join()

    print("下载完毕耗时:{}s".format(round(time.time() - start, 2)))