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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 alterar(self, id_model, id_brand, name):
 """Change Model from by the identifier. :param id_model: Identifier of the Model. Integer value and greater than zero. :param id_brand: Identifier of the Brand. Integer value and greater than zero. :param name: Model name. String with a minimum 3 and maximum of 100 characters :return: None :raise InvalidParameterError: The identifier of Model, Brand or name is null and invalid. :raise MarcaNaoExisteError: Brand not registered. :raise ModeloEquipamentoNaoExisteError: Model not registered. :raise NomeMarcaModeloDuplicadoError: There is already a registered Model with the value of name and brand. :raise DataBaseError: Networkapi failed to access the database. :raise XMLError: Networkapi failed to generate the XML response """


        if not is_valid_int_param(id_model):
            raise InvalidParameterError(
                u'The identifier of Model is invalid or was not informed.')

        model_map = dict()
        model_map['name'] = name
        model_map['id_brand'] = id_brand

        url = 'model/' + str(id_model) + '/'

        code, xml = self.submit({'model': model_map}, 'PUT', url)

        return self.response(code, xml)