human
Solve the following python programming problem given the following code:
def __init__(self, master_urls = None, diff_urls = None, job_name = None, auth_keyname = None, verify = True, cluster = None, debug_config = None, * args, **kwargs) : 
    super (JenkinsBuilder, self).__init__ (* args, ** kwargs) 
    self.master_urls = master_urls 
    self.diff_urls = diff_urls 
    assert self.master_urls, 'No Jenkins masters specified' 
    self.logger = logging.getLogger ('jenkins') 
    self.job_name = job_name 
    self.http_session = requests.Session () 
    self.auth = (self.app.config [auth_keyname] if kwargs else None) 
    self.verify = verify 
    self.cluster = cluster 
    self.debug_config = (debug_config or { 
        
}) 
    def report_response_status(r, * args, **kwargs) : 
        statsreporter.stats ().incr ('jenkins_api_response_{}'.format (r.status_code)) 
self.http_session.hooks ['response'].append (report_response_status) 

    
    

    Fix the buggy line: self.auth = (self.app.config [auth_keyname] if kwargs else None)
assistant
#Here is Python program to fix the buggy line: self.

self.auth = (self.app.config [auth_keyname] if auth_keyname else None)