Trying to talk to Jenkins while authenticating with Kerberos and getting

GSSException: No credential found for: 1.2.840.113554.1.2.2 usage: Accept

Using requests_gssapi and specifying SPNEGO:

import gssapi
import requests
from requests_gssapi import HTTPSPNEGOAuth

login = 'http://jenkins/login'
job = 'http://jenkins/view/.../job/.../'

# GSSException: No credential found for: 1.2.840.113554.1.2.2 usage: Accept
spnego = gssapi.mechs.Mechanism.from_sasl_name("SPNEGO")

s = requests.Session()

rl = s.get( login, auth=HTTPSPNEGOAuth( mech=spnego ) )
rj = s.get( job )

works for me.