def instance_get(context, instance_id, columns_to_join=None):
 return IMPL.instance_get(context, instance_id, columns_to_join=columns_to_join)

def instance_get ( context , instance_id , columns_to_join = None ) : return IMPL . instance_get ( context , instance_id , columns_to_join = columns_to_join )
get an instance or raise if it does not exist .