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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 init_app(self, app):
 """ Initialize the application and register the blueprint :param app: Flask Application :return: Blueprint of the current nemo app :rtype: flask.Blueprint """

        self.app = app
        self.__blueprint__ = Blueprint(
            self.__name__,
            self.__name__,
            url_prefix=self.__prefix__,
        )

        for url, name, methods in self.__urls__:
            self.blueprint.add_url_rule(
                url,
                view_func=getattr(self, name),
                endpoint=name.replace("r_", ""),
                methods=methods
            )
        self.app = self.app.register_blueprint(self.blueprint)

        return self.blueprint