python基础---装饰器模式

def outer(fun):  #fun相当于是fun1方法
    def wrapper(arg):
        print "今天"
        result = fun(arg)
        print "天好"

        return result
    return wrapper  

@outer
def fun1(arg):
    print "fun1"+str(arg)
    return 'return'

'''
@outer
def fun1(arg)
相当于是：
fun1 = def wrapper():
        print "今天"
        fun()
        print "天好"
    return wrapper
'''   

print fun1(33)