requests指定参数进行网页爬虫

在爬取网络数据时，会碰到门户网站的反爬机制，这里提到的是UA伪装，即对User-Agent进行伪装，具体代码为：

import requests

if __name__ == '__main__':
    url = 'https://www.sogou.com/web'
    # 反反爬机制，UA伪装
    headers = {
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36'
    }
    kw = input("enter a keyword: ")
    param = {
        'query': kw
    }
    response = requests.get(url=url, params=param, headers=headers)
    page_text = response.text
    fileName = kw + '.html'
    with open(fileName, 'w',encoding='utf-8') as fp:
        fp.write(page_text)

    print(fileName, '保存成功')