human
Solve the following python programming problem given the following code:
@ mock.patch ('mutornadomon.config.MuTornadoMon') 
@ mock.patch ('mutornadomon.config.WebCollector') 
@ mock.patch ('mutornadomon.config.UtilizationCollector') 
def test_initialize_mutornadmon_passes_publisher(self, utilization_collector_mock, web_collector_mock, mutornadomon_mock) : 
    'Test initialize_mutornadomon() sets up publishing interface' 
    def publisher(monitor) : 
        pass 
app = sentinel.application 
    result = initialize_mutornadomon (app, publisher = publisher, host_limit = 'test') 
    monitor_inst = mutornadomon_mock.return_value 
    self.assertEqual (result, monitor_inst) 
    web_collector_mock.assert_called_once_with (monitor_inst, app) 
    utilization_collector_mock.assert_called_once_with (monitor_inst) 
    assert (mutornadomon_mock.call_count == 1) 
    arg_list = mutornadomon_mock.call_args_list 
    (args, kwargs) = arg_list [0] 
    self.assertEqual (len (monitor_inst), 1) 
    self.assertTrue (isinstance (args [0], PublishExternalInterface)) 
    self.assertEqual (kwargs, { 
        
}) 

    
    

    Fix the buggy line: self.assertEqual (len (monitor_inst), 1)
assistant
#Here is Python program to fix the buggy line: self.

self.assertEqual (len (args), 1)