human
Solve the following python programming problem given the following code:
@ gen_test 
def test_future_traceback(self) : 
    @ return_future 
    @ gen.engine 
    def f(callback) : 
        (yield gen.Task (self.io_loop.add_callback)) 
        try : 
            (1 / 0) 
except ZeroDivisionError : 
            self.expected_frame = traceback.extract_tb (sys.exc_info () [2], limit = 1) [0] 
            raise 
try : 
        (yield f ()) 
        self.fail ("didn't get expected exception") 
except ZeroDivisionError : 
        tb = traceback.extract_tb (sys.exc_info () [2]) 
        self.assertIn (f.expected_frame, tb) 

    
    

    Fix the buggy line: self.assertIn (f.expected_frame, tb)
assistant
#Here is Python code to fix the buggy line: self.

self.assertIn (self.expected_frame, tb)