def _get_instance_attributes(self):
        """Return a generator for instance attributes' name and value.

        .. code-block:: python3

            for _name, _value in self._get_instance_attributes():
                print("attribute name: {}".format(_name))
                print("attribute value: {}".format(_value))

        Returns:
            generator: tuples with attribute name and value.

        """
        for name, value in self.__dict__.items():
            if name in map((lambda x: x[0]), self.get_class_attributes()):
                yield (name, value)
Return a generator for instance attributes' name and value.

        .. code-block:: python3

            for _name, _value in self._get_instance_attributes():
                print("attribute name: {}".format(_name))
                print("attribute value: {}".format(_value))

        Returns:
            generator: tuples with attribute name and value.