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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def decorator(self, func):
 """ Wrapper function to decorate a function """

        if inspect.isfunction(func):
            func._methodview = self
        elif inspect.ismethod(func):
            func.__func__._methodview = self
        else:
            raise AssertionError('Can only decorate function and methods, {} given'.format(func))
        return func