- add MemoizedSlots, a generalized solution to using __getattr__

for memoization on a class that uses slots.
- apply many more __slots__.  mem use for nova now at 46% savings

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/base.py b/lib/sqlalchemy/orm/base.py
index afeeba322..c5c8c5e2e 100644
--- a/lib/sqlalchemy/orm/base.py
+++ b/lib/sqlalchemy/orm/base.py
@@ -437,7 +437,6 @@ class InspectionAttr(object):
     here intact for forwards-compatibility.
 
     """
-
     __slots__ = ()
 
     is_selectable = False
@@ -490,6 +489,12 @@ class InspectionAttr(object):
 
     """
 
+
+class InspectionAttrInfo(InspectionAttr):
+    """Adds the ``.info`` attribute to :class:`.Inspectionattr`.
+
+    """
+
     @util.memoized_property
     def info(self):
         """Info dictionary associated with the object, allowing user-defined