13             def adder(y):  function
15             return adder
27                 def adder(y):  function
29                 return adder
41             def adder(y):  function
44             return adder
57                     def adder(y):  function
59                     return adder
64         adder = make_adder4()
65         self.assertEqual(adder(1), 2)
68         self.assertEqual(adder(-2), 8)
88             def adder(y):  function
91             return adder