human
Solve the following python programming problem given the following code:
@ skip26 
def test_classmethods(self) : 
    class C (object) : 
        def foo(* a) : 
            return a 
goo = classmethod (foo) 
c = C () 
    self.assertEqual (C.goo (1), (C, 1)) 
    self.assertEqual (c.goo (1), (C, 1)) 
    self.assertEqual (c.foo (1), (c, 1)) 
    class D (C) : 
        pass 
d = D () 
    self.assertEqual (D.goo (1), (D, 1)) 
    self.assertEqual (d.goo (1), (D, 1)) 
    self.assertEqual (d.foo (1), (self, 1)) 
    self.assertEqual (D.foo (d, 1), (d, 1)) 
    def f(cls, arg) : 
        return (cls, arg) 
ff = classmethod (f) 
    self.assertEqual (ff.__get__ (0, int) (42), (int, 42)) 
    self.assertEqual (ff.__get__ (0) (42), (int, 42)) 
    self.assertEqual (C.goo.__self__, C) 
    self.assertEqual (D.goo.__self__, D) 
    self.assertEqual (super (D, D).goo.__self__, D) 
    self.assertEqual (super (D, d).goo.__self__, D) 
    self.assertEqual (super (D, D).goo (), (D,)) 
    self.assertEqual (super (D, d).goo (), (D,)) 
    meth = classmethod (1).__get__ (1) 
    self.assertRaises (TypeError, meth) 
    try : 
        classmethod (f, kw = 1) 
except TypeError : 
        pass 
else : 
        self.fail ("classmethod shouldn't accept keyword args") 

    
    

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

self.assertEqual (d.foo (1), (d, 1))