def get_activity_lookup_session(self, *args, **kwargs):
if not self.supports_activity_lookup():<EOL><INDENT>raise Unimplemented()<EOL><DEDENT>try:<EOL><INDENT>from . import sessions<EOL><DEDENT>except ImportError:<EOL><INDENT>raise OperationFailed()<EOL><DEDENT>try:<EOL><INDENT>session = sessions.ActivityLookupSession(runtime=self._runtime)<EOL><DEDENT>except AttributeError:<EOL><INDENT>raise OperationFailed()<EOL><DEDENT>return session<EOL>
Gets the OsidSession associated with the activity lookup
        service.

        return: (osid.learning.ActivityLookupSession) - an
                ActivityLookupSession
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - supports_activity_lookup() is false
        compliance: optional - This method must be implemented if
                    supports_activity_lookup() is true.