#!/usr/bin/env python

x = 42  # <1>


def function_a():
    y = 5  # <2>

    def function_b():
        z = 32  # <3>
        print("function_b(): z is", z)  # <4>
        print("function_b(): y is", y)  # <5>
        print("function_b(): x is", x)  # <6>
        print("function_b(): type(x) is", type(x))  # <7>

    return function_b


f = function_a()  # <8>
f()  # <9>