human
Solve the following python programming problem given the following code:
def test_stops_if_retval_matches_predicate(self, sleep_mock) : 
    def func() : 
        return 0 
retry = retrying.Retry (max_attempts = 5, predicate_retval_as_arg = True, predicate = (lambda rv : (rv == 0))) 
    retry.run (func) 
    self.assertEqual (self.attempt, 1) 
    self.assertFalse (sleep_mock.called) 

    
    

    Fix the buggy line: self.assertEqual (self.attempt, 1)
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (retry.attempt, 1)