human
Solve the following python programming problem given the following code:
def test_function_is_called_once_by_default(self, sleep_mock) : 
    retryer = retrying.retry () 
    def func() : 
        pass 
retryer.run (func) 
    self.assertFalse (sleep_mock.called) 
    self.assertEqual (self.attempt, 1) 

    
    

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

self.assertEqual (retryer.attempt, 1)