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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 initialized(func):
 """ decorator for testing if a class has been initialized prior to calling any attribute """


    def wrapper(self, *args, **kwargs):
        """ internal wrapper function """
        if not self.__is_initialized__:
            return EmptyDot()
        return func(self, *args, **kwargs)
    return wrapper