python 多个装饰器的调用顺序

def user_login(fun):
    def islogin(request,*args,**kwargs):
        context = {}
        if request.session.has_key('uname'):
            context['uname'] = request.session.get('uname')
        else:
            context['uname'] = 'None'
        return fun(request,context,*args,**kwargs)
    return islogin

@user_login
def ucOrder(request,context,pIndex):
    '''
    获取数据
    处理数据
    传递到页面上去

def one(func):
    print('----1----')
    def two():
        print('----2----')
        func()
    return two

def a(func):
    print('----a----')
    def b():
        print('----b----')
        func()
    return b

@one
@a
def demo():
    print('----3----')

demo()

/usr/bin/python2.7 /home/python/Desktop/tornadoProject/one.py
----a----
----1----
----2----
----b----
----3----