From 20c82967ca98ceead88401ca8f35f8cf0e758318 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Tue, 19 Aug 2008 16:33:01 +0000
Subject: [PATCH] catch AttributeError in case thread local storage was not
 configured

---
 lib/sqlalchemy/util.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/sqlalchemy/util.py b/lib/sqlalchemy/util.py
index c2d4bf6abf..443ab8878f 100644
--- a/lib/sqlalchemy/util.py
+++ b/lib/sqlalchemy/util.py
@@ -1173,7 +1173,10 @@ class _TLocalRegistry(ScopedRegistry):
         self.registry.value = obj
 
     def clear(self):
-        del self.registry.value
+        try:
+            del self.registry.value
+        except AttributeError:
+            pass
 
 class WeakCompositeKey(object):
     """an weak-referencable, hashable collection which is strongly referenced
-- 
2.47.3