fix attribute handling - no class attributes on classes that should be usable as adapters

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2800 fd906abe-77d9-0310-91a1-e0d9ade77398

commerce/base.py

@@ -31,12 +31,9 @@ class Shop(object):
 
     implements(IShop)
 
-    title = u'Shop'
-
     def __init__(self, name, title=None):
         self.name = name
-        if title is not None:
-            self.title = title
+        self.title = title or u'Shop'
         self.products = {}
 
     def addProduct(self, product):

commerce/product.py

@@ -31,11 +31,8 @@ class Product(object):
 
     implements(IProduct)
 
-    title = u'Product'
-
     def __init__(self, name, title=None):
         self.name = name
-        if title is not None:
-            self.title = title
+        self.title = title or u'Product'
         self.shops = {}