human
Solve the following python programming problem given the following code:
def __init__(self, * args, **kwargs) : 
    unittest.TestCase.__init__ (self, * args, ** kwargs) 
    wsgi.app.testing = True 
    self.http_client = wsgi.app.test_client () 
    orig_open = args.http_client.open 
    def _open(* args, **kwargs) : 
        if ('headers' not in kwargs) : 
            kwargs ['headers'] = { 
                
} 
if ('User-Agent' not in kwargs ['headers']) : 
            ua = 'docker/0.10.1 go/go1.2.1 git-commit/3600720 kernel/3.8.0-19-generic os/linux arch/amd64' 
            kwargs ['headers'] ['User-Agent'] = ua 
return orig_open (* args, ** kwargs) 
self.http_client.open = _open 

    
    

    Fix the buggy line: orig_open = args.http_client.open
assistant
#Here is Python program to fix the buggy line: orig_open = args.

orig_open = self.http_client.open