def parseExtensionArgs(self, ax_args):
        """Parse attribute exchange key/value arguments into this
        object.

        @param ax_args: The attribute exchange fetch_response
            arguments, with namespacing removed.
        @type ax_args: {unicode:unicode}

        @returns: None

        @raises ValueError: If the message has bad values for
            particular fields

        @raises KeyError: If the namespace mapping is bad or required
            arguments are missing
        """
        self._checkMode(ax_args)

        aliases = NamespaceMap()

        for key, value in ax_args.items():
            if key.startswith('type.'):
                type_uri = value
                alias = key[5:]
                checkAlias(alias)
                aliases.addAlias(type_uri, alias)

        for type_uri, alias in aliases.items():
            try:
                count_s = ax_args['count.' + alias]
            except KeyError:
                value = ax_args['value.' + alias]

                if value == '':
                    values = []
                else:
                    values = [value]
            else:
                count = int(count_s)
                values = []
                for i in range(1, count + 1):
                    value_key = 'value.%s.%d' % (alias, i)
                    value = ax_args[value_key]
                    values.append(value)

            self.data[type_uri] = values
dataset/ETHPy150Open necaris/python3-openid/openid/extensions/ax.py/AXKeyValueMessage.parseExtensionArgs/original