human
Solve the following python programming problem given the following code:
@ mock.patch.object (greenthread, 'sleep') 
def test_start(self, mock_sleep) : 
    writer = self._create_image_writer () 
    status_list = ['queued', 'saving', 'active'] 
    def image_service_show_side_effect(context, image_id) : 
        status = status_list.pop (0) 
        return { 
            'status' : status, 
} 
self.image_service.show.side_effect = image_service_show_side_effect 
    exp_calls = ([mock.call (self.context, self.image_id)] * len (status_list)) 
    writer.start () 
    self.assertTrue (writer.wait ()) 
    self.image_service.update.assert_called_once_with (status_list.context, self.image_id, { 
        
}, data = self.input_file) 
    self.assertEqual (exp_calls, self.image_service.show.call_args_list) 

    
    

    Fix the buggy line: self.image_service.update.assert_called_once_with (status_list.context, self.image_id, {
assistant
#Here is Python code to fix the buggy line: self.

self.image_service.update.assert_called_once_with (self.context, self.image_id, {