requests爬取知乎携带cookies仍然被反爬是什么原理？

Question

from tools.cookie_operate import str_to_dict  
from config.index import ZHIHU_COOKIES  
import requests  
from fake_useragent import UserAgent  
  
headers = {  
    "User-Agent": UserAgent().random,  
    "Host": "www.zhihu.com",  
    "Referer": "https://www.zhihu.com/"  
}  
cookie_dict = str_to_dict(ZHIHU_COOKIES)  
print(cookie_dict)  
request = requests.get("https://www.zhihu.com", cookies=cookie_dict, headers=headers, allow_redirects=False)  
print(request)  
print(request.text)

登录后获取cookies，配置到文件里，感觉已经万无一失了，还是给转到了登录页，会是什么原因？

Answer 1

纯爬虫只要爬的多了就会遇到反爬限制，如果要爬的东西不多，可以考虑用selenium