def describe_cluster_security_groups(self, security_group_name=None):
        security_groups = self.security_groups.values()
        if security_group_name:
            if self.security_groups in security_group_name:
                return [self.security_groups[security_group_name]]
            else:
                raise ClusterSecurityGroupNotFoundError(security_group_name)
        return security_groups
dataset/ETHPy150Open spulec/moto/moto/redshift/models.py/RedshiftBackend.describe_cluster_security_groups/swapped operands of `in`