human
Solve the following python programming problem given the following code:
def consume_in_thread(self) : 
    'Consumer from all queues/consumers in a greenthread.' 
    def _consumer_thread() : 
        try : 
            self.consume () 
except greenlet.GreenletExit : 
            return 
if (self.consumer_thread is None) : 
        self.consumer_thread = eventlet.spawn (self) 
return self.consumer_thread 

    
    

    Fix the buggy line: self.consumer_thread = eventlet.spawn (self)
assistant
#Here is Python code to fix the buggy line: self.

self.consumer_thread = eventlet.spawn (def _consumer_thread()