python closure and function decorators 1

原文：http://thecodeship.com/patterns/guide-to-python-function-decorators/

仅此做一个中文翻译：

我们知道，python在方法def的使用上，有一些非常强大的功能。

譬如，将方法传给一个变量：

def sayHI(name):
    return "hi " + name

ExexSayHI = sayHI

print ExexSayHI("Allen")

或者在方法中定义方法

def SayHi(name):
    def hi():
        return "hi "
    return hi() + name

print SayHi("Allen")

方法也可以变成参数进行传递

def SayHi(name):
    return "Hi " + name

def SayHiFrom(func):
    return func("Allen")

print SayHiFrom(SayHi) 

方法也可以变成返回值

def SayHi(name):
    def SayHiInner():
        return "Hi " + name

    return SayHiInner()

hi = SayHi
print hi("Allen")

To be continue.....