day 32-2 练习

基于 requests 实现简单线程池的运用

from concurrent.futures import ThreadPoolExecutor
import requests


def gets(url):
    print('正在获取 %s' % url)
    info = requests.get(url)
    num = len(info.text)
    return {'url': url, 'num': num}


def ret(info):
    info = info.result()
    print('%s 的长度为 %s' % (info['url'], info['num']))


if __name__ == '__main__':
    url = ['https://www.cnblogs.com/ysging/p/12339912.html',
           'https://www.cnblogs.com/ysging/p/12329308.html',
           'https://www.cnblogs.com/ysging/p/12319763.html']
    t = ThreadPoolExecutor(2)
    for i in url:
        t.submit(gets, i).add_done_callback(ret)

# 执行结果
# 正在获取 https://www.cnblogs.com/ysging/p/12339912.html
# 正在获取 https://www.cnblogs.com/ysging/p/12329308.html
# https://www.cnblogs.com/ysging/p/12329308.html 的长度为 41115
# 正在获取 https://www.cnblogs.com/ysging/p/12319763.html
# https://www.cnblogs.com/ysging/p/12339912.html 的长度为 53267
# https://www.cnblogs.com/ysging/p/12319763.html 的长度为 30937