Use itervalues instead of values.

data_dict is not modified in loop.

apachedex/__init__.py

@@ -561,7 +561,7 @@ class ERP5SiteStats(GenericSiteStats):
     append('</tr>')
     def apdexAsColumns(data_dict):
       data_total = APDEXStats(self.threshold, None)
-      for data in data_dict.values():
+      for data in data_dict.itervalues():
         data_total.accumulateFrom(data)
       append(data_total.asHTML(self.threshold, True))
       for column in column_list: