1 a = 4 2 3 def f(x): 4 def g(y, x=x): 5 def h(z, x=x, y=y): 6 return x, y, z, a 7 return h 8 return g 9 10 result = f(1)(2)(3) 11 assert result == (1, 2, 3, 4)
