`wrapt`¶

Documentation
How you implemented your Python decorator is wrong (GitHub)
Special attributes of wrapt.FunctionWrapper and derived types:
- __wrapped__
- _self_instance
- _self_wrapper
- _self_enabled
- _self_binding
- _self_parent

Identify what kind of object is being decorated (necessary for “universal” decorators):

import inspect

@wrapt.decorator
def universal(wrapped, instance, args, kwargs):
    if instance is None:
        if inspect.isclass(wrapped):
            # Decorator was applied to a class.
            return wrapped(*args, **kwargs)
        else:
            # Decorator was applied to a function or staticmethod.
            return wrapped(*args, **kwargs)
    else:
        if inspect.isclass(instance):
            # Decorator was applied to a classmethod.
            return wrapped(*args, **kwargs)
        else:
            # Decorator was applied to an instancemethod.
            return wrapped(*args, **kwargs)

wrapt¶

`wrapt`¶