带有参数并访问类实例的Python Decorator [重复]

带有参数并访问类实例的Python Decorator [重复]

是。实际上，按照您的意思，实际上没有一种方法可以编写 没有
访问权限的装饰器

self

。装饰的函数包装了原始函数，因此它必须至少接受该函数接受的参数（或可以从中导出这些参数的某些参数），否则它将无法将正确的参数传递给基础函数。

为此，您不需要执行任何特殊 *** 作，只需编写一个普通的装饰器即可：

def deco(func):    def wrapper(self, *args, **kwargs):        print "I am the decorator, I know that self is", self, "and I can do whatever I want with it!"        print "I also got other args:", args, kwargs        func(self)    return wrapperclass Foo(object):    @deco    def meth(self):        print "I am the method, my self is", self

然后，您可以使用它：

>>> f = Foo()>>> f.meth()I am the decorator, I know that self is <__main__.Foo object at 0x0000000002BCBE80> and I can do whatever I want with it!I also got other args: () {}I am the method, my self is <__main__.Foo object at 0x0000000002BCBE80>>>> f.meth('blah', stuff='crud')I am the decorator, I know that self is <__main__.Foo object at 0x0000000002BCBE80> and I can do whatever I want with it!I also got other args: (u'blah',) {'stuff': u'crud'}I am the method, my self is <__main__.Foo object at 0x0000000002BCBE80>