>>> def multiplier(factor):
... def multiple(number):
... return number * factor
... return multiple
...
>>>
>>> multiplier(3)(3)
9
>>> multiplier(4)(3)
与嵌套函数紧密相关的就是闭包特性，举一个简单的例子：
复制代码 代码如下:
>>> def test():
... a = {'name': 'wyj'}
... def f():
... return a['name']
... return f
...
>>> def test():
... a = {'name': 'wyj'}
... def f():
... return a['name']
... return a,f
...
>>> a,f = test()
>>> f()
'wyj'
>>> a['name'] = 'ljq'
>>> f()
'ljq'
例子3
#! /usr/bin/python
def yao1(a=1,b=32):
def yao2(c=54):
def yao3(d=3):
def yao4(e=10):
return a+b+c+d+e
return yao4
return yao3
return yao2
print yao1()()()()
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