装饰器似乎更适合修改整个对象(包括函数对象)的功能，而不是对象方法的功能，后者通常依赖于实例属性。例如:

def mod_bar(cls):
    # returns modified class

    def decorate(fcn):
        # returns decorated function

        def new_fcn(self):
            print self.start_str
            print fcn(self)
            print self.end_str

        return new_fcn

    cls.bar = decorate(cls.bar)
    return cls

@mod_bar
class Test(object):
    def __init__(self):
        self.start_str = "starting dec"
        self.end_str = "ending dec" 

    def bar(self):
        return "bar"

输出结果为:

>>> import Test
>>> a = Test()
>>> a.bar()
starting dec
bar
ending dec

我有一个可能有帮助的装饰器的实现

    import functools
    import datetime


    class Decorator(object):

        def __init__(self):
            pass


        def execution_time(func):

            @functools.wraps(func)
            def wrap(self, *args, **kwargs):

                """ Wrapper Function """

                start = datetime.datetime.now()
                Tem = func(self, *args, **kwargs)
                end = datetime.datetime.now()
                print("Exection Time:{}".format(end-start))
                return Tem

            return wrap


    class Test(Decorator):

        def __init__(self):
            self._MethodName = Test.funca.__name__

        @Decorator.execution_time
        def funca(self):
            print("Running Function : {}".format(self._MethodName))
            return True


    if __name__ == "__main__":
        obj = Test()
        data = obj.funca()
        print(data)

装饰器似乎更适合修改整个对象(包括函数对象)的功能，而不是对象方法的功能，后者通常依赖于实例属性。例如:

def mod_bar(cls):
    # returns modified class

    def decorate(fcn):
        # returns decorated function

        def new_fcn(self):
            print self.start_str
            print fcn(self)
            print self.end_str

        return new_fcn

    cls.bar = decorate(cls.bar)
    return cls

@mod_bar
class Test(object):
    def __init__(self):
        self.start_str = "starting dec"
        self.end_str = "ending dec" 

    def bar(self):
        return "bar"

输出结果为:

>>> import Test
>>> a = Test()
>>> a.bar()
starting dec
bar
ending dec

import functools


class Example:

    def wrapper(func):
        @functools.wraps(func)
        def wrap(self, *args, **kwargs):
            print("inside wrap")
            return func(self, *args, **kwargs)
        return wrap

    @wrapper
    def method(self):
        print("METHOD")

    wrapper = staticmethod(wrapper)


e = Example()
e.method()

你可以装饰装饰器:

import decorator

class Test(object):
    @decorator.decorator
    def _decorator(foo, self):
        foo(self)

    @_decorator
    def bar(self):
        pass

简单的方法。 您所需要做的就是将decorator方法放在类之外。 你仍然可以在室内使用。

def my_decorator(func):
    #this is the key line. There's the aditional self parameter
    def wrap(self, *args, **kwargs):
        # you can use self here as if you were inside the class
        return func(self, *args, **kwargs)
    return wrap

class Test(object):
    @my_decorator
    def bar(self):
        pass