返回为空，获取不到数据

import requests
import re
import os
#https://g.yh31.com/zibg

url = 'https://qq.yh31.com/zjbq/'


headers = {
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
    'Accept-Language': 'zh-CN,zh;q=0.9',
    'Cache-Control': 'max-age=0',
    'Connection': 'keep-alive',
    'Cookie': 'Hm_lvt_943b11cc94686b977ff96cd8821c4273=1679380556; Hm_lpvt_943b11cc94686b977ff96cd8821c4273=1679380556',
    'If-Modified-Since': 'Fri, 29 Jul 2022 06:46:28 GMT',
    'If-None-Match': 'W/"c1b5eaed16a3d81:0"',
    'Sec-Fetch-Dest': 'document',
    'Sec-Fetch-Mode': 'navigate',
    'Sec-Fetch-Site': 'none',
    'Sec-Fetch-User': '?1',
    'Upgrade-Insecure-Requests': '1',
    'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36',
    'sec-ch-ua': '"Google Chrome";v="111", "Not(A:Brand";v="8", "Chromium";v="111"',
    'sec-ch-ua-mobile': '?0',
    'sec-ch-ua-platform': '"macOS"',
}

response = requests.get('https://qq.yh31.com/zjbq/', headers=headers)
print(response.content.decode('utf-8'))

将请求头headers中If-None-Natch，If-Modified-Since对应的值设置为""

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