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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 _path(self, attrpath):
 """Returns the namespace object at the given .-separated path, creating any namespaces in the path that don't already exist."""


        attr, _, subpath = attrpath.partition(".")
        if attr not in self.__dict__:
            self.__dict__[attr] = Namespace()
            self.__namespaces.add(attr)

        if subpath:
            return self.__dict__[attr]._path(subpath)
        else:
            return self.__dict__[attr]