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前言

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一、使用步骤

1.引入库

代码如下（示例）：

# -*- coding:utf-8 -*-
# author: cbj
# datetime: 2024/6/27 14:58
# @File: 8thread_pool.py
from concurrent.futures import ThreadPoolExecutor, as_completed
# import blog_spider# ============blog_spider================
import timeurls = [f'https://www.cnblogs.com/#p{page}' for page in range(1, 50 + 1)]def craw(url):urls2 = [f'https://www.cnblogs.com/#p{page}' for page in range(1, 50 + 1)]lis = {urls2[i]: i for i in range(len(urls2))}time.sleep(0.1)# r = requests.get(url,verify=False)return 'rr_' + urldef parse(html):time.sleep(0.1)return ['href' + html for i in range(10)]# =============blog_spider===============with ThreadPoolExecutor() as pool:htmls = pool.map(craw, urls)htmls = list(htmls)htmls = list(zip(urls, htmls))for url, html in htmls:print(url, len(html))print('craw over'+'\n'*10)with ThreadPoolExecutor() as pool:futures = {}for url, html in htmls:future1 = pool.submit(parse, html)futures[future1] = url# ========打印出来结果有序=========# for future1, url in futures.items():#     print(url, future1.result())# ========打印出来结果有序=========# ========打印出来的结果无序========for future1 in as_completed(futures):url = futures[future1]print(url, future1.result())# ========打印出来的结果无序========

总结

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