From 7941d11c10632cff11d1bae1b717e2c0c665a176 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Tue, 15 Nov 2005 05:23:43 +0000
Subject: [PATCH] enhancements to lazyloader.  now you can pickle objects with
 lazyload.

---
 lib/sqlalchemy/attributes.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/sqlalchemy/attributes.py b/lib/sqlalchemy/attributes.py
index 6f14566adb..90f3fb949e 100644
--- a/lib/sqlalchemy/attributes.py
+++ b/lib/sqlalchemy/attributes.py
@@ -248,6 +248,12 @@ class AttributeManager(object):
             obj.__dict__['_managed_attributes'] = attr
         return attr
 
+    def reset_history(self, obj, key):
+        try:
+            del self.attribute_history(obj)[key]
+        except KeyError:
+            pass
+        
     def class_managed(self, class_):
         try:
             attr = getattr(class_, '_class_managed_attributes')
-- 
2.47.2