a = 4  def f(x):      # Test function initialisation (f.$l0).      def g(y, x=x):          # Test function initialisation (f.$l0.$l0).          def h(a, z, x=x, y=y):             return x, y, z, a # parameter a overrides global scope          return h      return g  fn = f(1) print fn                        # __main__.f.$l0 print fn(2)                     # __main__.f.$l0.$l0 print fn(2)(5, 3)               # (1, 2, 3, 5) print fn(2)(5, 3, 6)            # (6, 2, 3, 5) print fn(2)(5, 3, 6, 7)         # (6, 7, 3, 5)