为什么我无法获取会话 cookie？

Question

import requests

with requests.session() as c:
    res = c.get('https://onlineedlreg.dotm.gov.np/dlNewRegHome', )
login_data ={'citizenshipID': '269',
             'statusType': 'NEWLICENSE'}
response = c.post("https://onlineedlreg.dotm.gov.np/dlNewRegHome",
                  data=login_data,)
r = c.get("https://onlineedlreg.dotm.gov.np/newDlApplicationEntry_.action")
print(res.cookies)
print(response.cookies)
print(r.cookies)

我想我应该为响应和 r 变量获取一些 cookie，但我没有这样做。可能是什么问题呢。 代码给出以下输出：

<RequestsCookieJar[<Cookie JSESSIONID=B70AD6C7E6780768127766637046E760 for onlineedlreg.dotm.gov.np/>]>
<RequestsCookieJar[]>
<RequestsCookieJar[]>

Answer 1

Response.cookies 仅包含响应中发送的 cookie。如果您想要会话 cookie，请使用 Session.cookies:

with requests.session() as c:
    res = c.get('https://onlineedlreg.dotm.gov.np/dlNewRegHome', )
    login_data ={'citizenshipID': '269',
                 'statusType': 'NEWLICENSE'}
    response = c.post("https://onlineedlreg.dotm.gov.np/dlNewRegHome",
                      data=login_data,)
    print(c.cookies)