ActivityTool: use sort(key=...) instead of sort(cmp=...)

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28403 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/ActivityTool.py

@@ -942,11 +942,8 @@ class ActivityTool (Folder, UniqueObject):
 
       try:
         #Sort activity list by priority
-        activity_list = activity_dict.values()
-        # Sort method must be local to access "self"
-        def cmpActivities(activity_1, activity_2):
-          return cmp(activity_1.getPriority(self), activity_2.getPriority(self))
-        activity_list.sort(cmpActivities)
+        activity_list = sorted(activity_dict.itervalues(),
+                               key=lambda activity: activity.getPriority(self))
 
         # Wakeup each queue
         for activity in activity_list: