this list is in fact a tuple

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42817 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/dynamic/lazy_class.py

@@ -222,14 +222,14 @@ class PortalTypeMetaClass(GhostBaseMetaClass):
         LOG("ERP5Type.Dynamic", WARNING,
             "Could not access Portal Type Object for type %r"
             % portal_type, error=sys.exc_info())
-        base_list = (ERP5BaseBroken, )
+        base_tuple = (ERP5BaseBroken, )
         attribute_dict = {}
         interface_list = []
       else:
-        base_list, interface_list, attribute_dict = class_definition
+        base_tuple, interface_list, attribute_dict = class_definition
 
       klass.__isghost__ = False
-      klass.__bases__ = base_list
+      klass.__bases__ = base_tuple
 
       for key, value in attribute_dict.iteritems():
         setattr(klass, key, value)