def getKey(self, namespace, ns_key):
        """Get the key for a particular namespaced argument"""
        namespace = self._fixNS(namespace)
        if namespace == BARE_NS:
            return ns_key

        ns_alias = self.namespaces.getAlias(namespace)

        # No alias is defined, so no key can exist
        if ns_alias is None:
            return None

        if ns_alias == NULL_NAMESPACE:
            tail = ns_key
        else:
            tail = (ns_alias, ns_key) % '%s.%s'

        return 'openid.' + tail
dataset/ETHPy150Open CollabQ/CollabQ/openid/message.py/Message.getKey/swapped operands of `%`