use a set instead of a list

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@36567 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessPath.py

@@ -377,18 +377,17 @@ class BusinessPath(Path, Predicate):
       full simulation trees per applied rule
     """
     portal_catalog = self.getPortalObject().portal_catalog
-    root_applied_rule_list = []
+    root_applied_rule_set = set()
     delivery_simulation_movement_list = portal_catalog(
       delivery_uid=[x.getUid() for x in explanation.getMovementList()])
 
     for simulation_movement in delivery_simulation_movement_list:
       applied_rule = simulation_movement.getRootAppliedRule().getPath()
-      if applied_rule not in root_applied_rule_list:
-        root_applied_rule_list.append(applied_rule)
+      root_applied_rule_set.add(applied_rule)
 
     simulation_movement_list = portal_catalog(
       portal_type='Simulation Movement', causality_uid=self.getUid(),
-      path=['%s/%%' % x for x in root_applied_rule_list])
+      path=['%s/%%' % x for x in root_applied_rule_set])
 
     return [simulation_movement.getObject() for simulation_movement
           in simulation_movement_list