From 11c1c50e595db600e7760e29f3c5f009c8df92ad Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Tue, 20 Sep 2005 03:08:44 +0000
Subject: [PATCH] dependency sort thing getting out of hand

---
 lib/sqlalchemy/attributes.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/sqlalchemy/attributes.py b/lib/sqlalchemy/attributes.py
index 959a39ad94..a12b57accb 100644
--- a/lib/sqlalchemy/attributes.py
+++ b/lib/sqlalchemy/attributes.py
@@ -57,6 +57,8 @@ class PropHistory(object):
     def setattr_clean(self, value):
         self.obj.__dict__[self.key] = value
     def setattr(self, value):
+        if isinstance(value, list):
+            raise ("assigning a list to scalar property '%s' on '%s' instance %d" % (self.key, self.obj.__class__.__name__, id(self.obj)))
         self.orig = self.obj.__dict__.get(self.key, None)
         self.obj.__dict__[self.key] = value
     def delattr(self):
-- 
2.47.2