Spider -- User-Agent 个人整理小模块

自己整理一个User-Agent模块，方便日后拿来就能用：

1、利用 fake_useragent

from fake_useragent import UserAgent


# 随机生成1个User-Agent
def get_headers():
    ua = UserAgent()
    useragent = ua.random
    headers = {'User-Agent': useragent}
    return headers


if __name__ == '__main__':
    headers = get_headers()

    print(headers)

2、手写 User-Agent

import random

from urllib import request


# 向测试网站（http://httpbin.org/get）发起请求，构造请求头并从响应中确认请求头信息
def test_useAgent(headers):
    # 定义常用变量：URL 、headers
    url = 'http://httpbin.org/get'
    # headers = {
    #   'User-Agent':'Opera/9.80 (Windows NT 6.1; U; zh-cn) Presto/2.9.168 Version/11.50'
    # }

    # 1. 创建请求对象 - 包装,并没有真正发请求
    req = request.Request(url=url, headers=headers)
    # 2. 获取响应对象
    res = request.urlopen(req)
    # 3. 提取响应内容
    html = res.read().decode('utf-8')

    print(html)

# 随机生成1个User-Agent
def get_headers():
    ua_list = [
        'Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)',
        'Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)',
        'Mozilla/5.0 (Linux;u;Android 4.2.2;zh-cn;) AppleWebKit/534.46 (KHTML,like Gecko) Version/5.1 Mobile Safari/10600.6.3 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)',
        'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)',
        'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)',
        'Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)',
        'Mozilla/5.0 (compatible; Yahoo! Slurp China; http://misc.yahoo.com.cn/help.html)',
    ]
    useragent = ua_list[random.randint(0, len(ua_list))-1]
    headers = {'User-Agent': useragent}
    return headers


if __name__ == '__main__':
    headers = get_headers()

    print(headers)
    test_useAgent(headers)

来源：https://www.cnblogs.com/gengyufei/p/12641395.html

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