#!/usr/bin/env python

def closure1():

flist = []

for i in xrange(3):

def func(x):

return x * i

flist.append(func)

for f in flist:

print f(2)

def closure2(msg):

def printer():

print msg

return printer

def not_closure2(msg):

def printer(msg=msg):

print msg

return printer

def generate_power_func(n):

def nth_power(x):

return x ** n

return nth_power

def outer():

d = {'y': 0}

def inner():

d['y'] += 1

return d['y']

return inner

def foo():

a = [1, ]

def bar():

a[0] = a[0] + 1

return a[0]

return bar

if __name__ == '__main__':

closure1()

printer = closure2('Foo!')

printer()

printer = not_closure2('Foo!')

printer()

raised_to_4 = generate_power_func(4)

del generate_power_func

print raised_to_4(2)

outer = outer()

print outer()

foo = foo()

print foo()