Can a decorator of an instance method access the class?

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I have something roughly like the following. Basically I need to access the class of an instance method from a decorator used upon the instance method in its definition.

def decorator(view):
    # do something that requires view"s class
    print view.im_class
    return view

class ModelA(object):
    @decorator
    def a_method(self):
        # do some stuff
        pass

The code as-is gives:

AttributeError: "function" object has no attribute "im_class"

I found similar question/answers - Python decorator makes function forget that it belongs to a class and Get class in Python decorator - but these rely upon a workaround that grabs the instance at run-time by snatching the first parameter. In my case, I will be calling the method based upon the information gleaned from its class, so I can"t wait for a call to come in.

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We hope this article has helped you to resolve the problem. Apart from Can a decorator of an instance method access the class?, check other __del__-related topics.

Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R.

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Frank Krasiko

Berlin | 2023-03-25

Simply put and clear. Thank you for sharing. Can a decorator of an instance method access the class? and other issues with io Python module was always my weak point 😁. I am just not quite sure it is the best method

Oliver Wu

Vigrinia | 2023-03-25

Maybe there are another answers? What Can a decorator of an instance method access the class? exactly means?. I just hope that will not emerge anymore

Oliver Robinson

Abu Dhabi | 2023-03-25

Thanks for explaining! I was stuck with Can a decorator of an instance method access the class? for some hours, finally got it done 🤗. Will use it in my bachelor thesis

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