From 85e8509399d1617f0dfc18cc1a0c5aeb10c3ccc7 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Fri, 30 Jan 2009 22:47:28 +0000
Subject: [PATCH] detect backref string as basestring, not str. [ticket:1301]

---
 lib/sqlalchemy/orm/properties.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sqlalchemy/orm/properties.py b/lib/sqlalchemy/orm/properties.py
index 73e7943706..d5857d9654 100644
--- a/lib/sqlalchemy/orm/properties.py
+++ b/lib/sqlalchemy/orm/properties.py
@@ -417,7 +417,7 @@ class RelationProperty(StrategizedProperty):
             if backref:
                 raise sa_exc.ArgumentError("backref and back_populates keyword arguments are mutually exclusive")
             self.backref = None
-        elif isinstance(backref, str):
+        elif isinstance(backref, basestring):
             # propagate explicitly sent primary/secondary join conditions to the BackRef object if
             # just a string was sent
             if secondary is not None:
-- 
2.47.3