def service_namespace_type(service_namespace):
    valid_values = ['autoscaling', 'ecs', 'ec2', 'rds', 'dynamodb']
    if (service_namespace not in valid_values):
        raise ValueError(('ServiceNamespace must be one of: "%s"' % ', '.join(valid_values)))
    return service_namespace
def service_namespace_type(service_namespace):
    valid_values = ['autoscaling', 'ecs', 'ec2', 'rds', 'dynamodb']
    if (service_namespace not in valid_values):
        raise ValueError(('ServiceNamespace must be one of: "%s"' % ', '.join(valid_values)))
    return service_namespace