Simple Example of a class with decorator support, context manager support

DecoratedContextManager.py

class DecoratedContextManager:

    def __init__(self):
        pass

    def start(self):
        """Starts, for example opens file.

        """
        pass

    def stop(self):
        """Stops, example closes file.

        """
        pass

    def __enter__(self):
        """Context manager support

        """
        self.start()
        return self

    def __exit__(self, exception_type, exception_value, traceback):
        """Context manager support

        """
        self.stop()

    def __del__(self):
        """Restore original settings if object looses scope.

        """
        self.stop()

    def __call__(self, org_func):
        """Decorator Support

        """
        @functools.wraps(org_func)
        def wrapper(*args, **kwargs):  # pylint: disable=C0111
            try:
                self.start()
                return org_func(*args, **kwargs)
            finally:
                self.stop()
        return wrapper