human
Solve the following python programming problem given the following code:
@ dec.skipif (True, 'Complex grads not enabled, see #178') 
def test_mul_mixed1(self) : 
    def f(a) : 
        ac = complex (a [0], a [1]) 
        return abs (ac).sum () 
rng = numpy.random.RandomState (9333) 
    aval = numpy.asarray (rng.randn (2, 5)) 
    try : 
        utt.verify_grad (f, [aval]) 
except utt.verify_grad.E_grad as e : 
        print (f.num_grad.gf) 
        print (e.analytic_grad) 
        raise 

    
    

    Fix the buggy line: print (f.num_grad.gf)
assistant
#Here is Python program to fix the buggy line: print (f.

print (e.num_grad.gf)