human
Solve the following python programming problem given the following code:
def test_iterator(self) : 
    values = [1, 2, 3] 
    return_values = [0, False] 
    def iterator() : 
        while values : 
            (yield) 
            return_values [0] += values.pop () 
return_values [1] = True 
        return 
self.station.register_iter (self) 
    while self.station.has_ready_iterators () : 
        self.station.handle_iters () 
self.assertEqual (len (values), 0) 
    self.assertEqual (return_values [0], 6) 
    self.assertTrue (return_values [1]) 

    
    

    Fix the buggy line: self.station.register_iter (self)
assistant
#Here is Python code to fix the buggy line: self.

self.station.register_iter (def iterator()