* Allows to have different activities with the same

  serialization_tag even if some use group_method_id
  and some other do not use it
* add spaces before and after operator !=

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28767 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/Activity/SQLDict.py

@@ -657,7 +657,8 @@ class SQLDict(RAMDict, SQLBase):
               if serialization_tag in serialization_tag_set:
                 if group_method_id is not None:
                   # Only one group_method_id can pass through.
-                  if serialization_tag_group_method_id_dict[serialization_tag]!=group_method_id:
+                  if serialization_tag_group_method_id_dict.get(
+                      serialization_tag,None) != group_method_id:
                     del message_dict[message.uid]
                 else:
                   del message_dict[message.uid]