def del_option_by_number(self, number):
        """
        Delete an option from the message by number

        :type number: Integer
        :param number: option naumber
        """
        for o in list(self._options):
            assert isinstance(o, Option)
            if o.number == number:
                self._options.remove(o)
Delete an option from the message by number

        :type number: Integer
        :param number: option naumber