From 19e5df51d8dfc6cd55fc0056f809be76f1dbbeee Mon Sep 17 00:00:00 2001
From: Christophe de Vienne <cdevienne@gmail.com>
Date: Tue, 8 Nov 2011 13:03:34 +0100
Subject: [PATCH] Fix registering of class inheriting from an already registerd
 class

---
 wsme/types.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wsme/types.py b/wsme/types.py
index 35bdf3f..cfb1feb 100644
--- a/wsme/types.py
+++ b/wsme/types.py
@@ -84,7 +84,8 @@ Unset = UnsetType()
 
 
 def iscomplex(datatype):
-    return hasattr(datatype, '_wsme_attributes')
+    return inspect.isclass(datatype) \
+            and '_wsme_attributes' in datatype.__dict__
 
 
 def isarray(datatype):