From 0fccc960c198609c24e7236970f9fdebe62f6c19 Mon Sep 17 00:00:00 2001
From: adustman <adustman@9fc6cd9a-920d-0410-adcf-ac96716ed7e8>
Date: Mon, 7 Jul 2003 21:44:40 +0000
Subject: [PATCH] Fix bug 605849 (I hope).

---
 MySQLdb/MySQLdb/converters.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/MySQLdb/MySQLdb/converters.py b/MySQLdb/MySQLdb/converters.py
index 0de6db6..1136e8d 100644
--- a/MySQLdb/MySQLdb/converters.py
+++ b/MySQLdb/MySQLdb/converters.py
@@ -88,7 +88,9 @@ def Instance2Str(o, d):
     if not cl and hasattr(types, 'ObjectType'):
         cl = filter(lambda x,o=o:
                     type(x) is types.TypeType
-                    and isinstance(o, x), d.keys())
+                    and isinstance(o, x)
+                    and d[x] is not Instance2Str,
+                    d.keys())
     if not cl:
         return d[types.StringType](o,d)
     d[o.__class__] = d[cl[0]]