py3: cmp()-based comparison and sorting have been dropped.

key()-based sorting is now used instead, available since Python 2.4.

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransactionLine_getNodeItemList.py

@@ -50,9 +50,6 @@ def display(x):
     display_cache[x] = display_funct(x)
   return display_cache[x]
 
-def sort(x,y):
-  return cmp(display(x), display(y))
-
 def getItemList(category=None, portal_path=None, mirror=0, omit_filter=0,
                 simulation_state=None):
   """Returns a list of Account path items. """
@@ -71,7 +68,7 @@ def getItemList(category=None, portal_path=None, mirror=0, omit_filter=0,
                               portal_type='Account',
                               base=0,
                               display_method=display,
-                              sort_method=sort,
+                              sort_key=display,
                               filter=filter_dict)
   return item_list
 

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransaction_getAccountingTransactionLineList.py

 if not portal_type:
   portal_type = context.getPortalObject().getPortalAccountingMovementTypeList()
 
-sort_dict = { 'income': 0,
-              'expense': -2,
-              'receivable': -2,
-              'payable': 0,
-              'collected_vat': -1,
-              'refundable_vat': -1 }
+sort_dict = {
+  'bank': -3,
+  'income': 0,
+  'expense': -2,
+  'receivable': -2,
+  'payable': 0,
+  'collected_vat': -1,
+  'refundable_vat': -1,
+}
 
 def getAccountingTransactionLineSortKey(line):
-  return sort_dict.get(line.getId(), line.getIntIndex() or line.getIntId())
+  return sort_dict.get(line.getId(), (line.getIntIndex() or line.getIntId() or 0))
 
 return sorted(context.contentValues(portal_type=portal_type, checked_permission="View"), key=getAccountingTransactionLineSortKey)

bt5/erp5_base/DocumentTemplateItem/portal_components/document.erp5.QuantitySignMovementGroup.py

@@ -48,6 +48,13 @@ whether this is really required.
 
 from erp5.component.document.MovementGroup import MovementGroup
 
+
+def _getSign(quantity):
+  if quantity == 0:
+    return 0
+  return 1 if quantity > 0 else -1
+
+
 class QuantitySignMovementGroup(MovementGroup):
   """
   The purpose of MovementGroup is to define how movements are grouped,
@@ -59,7 +66,7 @@ class QuantitySignMovementGroup(MovementGroup):
   def _getPropertyDict(self, movement, **kw):
     property_dict = {}
     quantity = movement.getQuantity()
-    property_dict['quantity_sign'] = cmp(quantity, 0)
+    property_dict['quantity_sign'] = _getSign(quantity)
     return property_dict
 
   def _separate(self, movement_list, **kw):
@@ -68,7 +75,7 @@ class QuantitySignMovementGroup(MovementGroup):
 
     tmp_list = [[], [], []] # -1:minus, 0:zero, 1:plus
     for movement in movement_list:
-      tmp_list[cmp(movement.getQuantity(), 0)].append(movement)
+      tmp_list[_getSign(movement.getQuantity())].append(movement)
     if len(tmp_list[1]):
       if len(tmp_list[-1]):
         return[

bt5/erp5_base/MixinTemplateItem/portal_components/mixin.erp5.BuilderMixin.py

@@ -36,6 +36,7 @@ from erp5.component.document.Amount import Amount
 from erp5.component.module.MovementGroup import MovementGroupNode
 from Products.ERP5Type.TransactionalVariable import getTransactionalVariable
 from Products.ERP5Type.UnrestrictedMethod import UnrestrictedMethod
+from Products.ERP5Type.Utils import OrderableKey
 from erp5.component.module.ExplanationCache import _getExplanationCache
 from DateTime import DateTime
 from Acquisition import aq_parent, aq_inner
@@ -781,15 +782,16 @@ class BuilderMixin(XMLObject, Amount, Predicate):
     for i in self.getPortalObject().portal_categories.collect_order_group.contentValues():
       category_index_dict[i.getId()] = i.getIntIndex()
 
-    def sort_movement_group(a, b):
-      return cmp(category_index_dict.get(a.getCollectOrderGroup()),
-                 category_index_dict.get(b.getCollectOrderGroup())) or \
-             cmp(a.getIntIndex(), b.getIntIndex())
+    def sort_movement_group_key(a):
+      return (
+        OrderableKey(category_index_dict.get(a.getCollectOrderGroup())),
+        OrderableKey(a.getIntIndex()),
+      )
     if portal_type is None:
       portal_type = self.getPortalMovementGroupTypeList()
     movement_group_list = [x for x in self.contentValues(filter={'portal_type': portal_type}) \
                            if collect_order_group is None or collect_order_group == x.getCollectOrderGroup()]
-    return sorted(movement_group_list, sort_movement_group)
+    return sorted(movement_group_list, key=sort_movement_group_key)
 
   # XXX category name is hardcoded.
   def getDeliveryMovementGroupList(self, **kw):

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Person_getPersonDetailedCareerList.py

@@ -24,8 +24,5 @@ else:
              or career.getStopDate() < to_date :
         career_list.append(career)
 
-def date_cmp(a, b):
-  return cmp(a.getStartDate(), b.getStartDate())
-
-career_list.sort(date_cmp)
+career_list.sort(key=lambda a: a.getStartDate())
 return career_list

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Person_getPersonDetailedContributionList.py

@@ -90,11 +90,7 @@ for portal_type in portal_type_list:
   obj['total'] = line_counter
   append(obj)
 
-# sort lines
-def cmpType(a, b):
-  return cmp(a['document_type'], b['document_type'])
-
-line_list.sort(cmpType)
+line_list.sort(key=lambda a:a['document_type'])
 
 # build stat line
 obj = Object(uid="new_")

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Person_getPersonDetailedEventList.py

@@ -31,9 +31,6 @@ dest_event_list = portal.portal_catalog(portal_type=event_type_list, default_des
 
 event_list = list(source_event_list)+list(dest_event_list)
 
-def sortDate(a, b):
-  return cmp(a.getStartDate(), b.getStartDate())
-
-event_list.sort(sortDate)
+event_list.sort(key=lambda a: a.getStartDate())
 
 return event_list

bt5/erp5_budget/SkinTemplateItem/portal_skins/erp5_budget/Budget_hashVariationCategoryList.py

@@ -68,6 +68,7 @@ for item in item_list:
     else:
       sub_field_dict[item_key]['title'] = base_category
 
-sub_field_values = sub_field_dict.values()
-sub_field_values.sort(key=lambda d:d['int_index'])
-return sub_field_values
+return sorted(
+  sub_field_dict.values(),
+  key=lambda d: d['int_index']
+)

bt5/erp5_calendar/SkinTemplateItem/portal_skins/erp5_calendar/PersonModule_getLeaveRequestReportLineList.py

@@ -68,10 +68,7 @@ for person in person_value_list:
         total=person_total,
         **result_dict))
 
-result_list.sort(lambda a,b: cmp(
-        a.person_career_reference or a.person_title,
-        b.person_career_reference or b.person_title))
-
+result_list.sort(key=lambda r: (r.person_career_reference or '', r.person_title or ''))
 request.set('total_time', total_time)
 request.set('total_time_per_resource', total_time_per_resource)
 

bt5/erp5_calendar/SkinTemplateItem/portal_skins/erp5_calendar/PersonModule_getLeaveRequestReportListboxColumnList.py

@@ -3,7 +3,7 @@ column_item_list = [ ('person_career_reference', 'Employee Number'),
 
 non_translatable_column_item_list = context\
         .PersonModule_getLeaveRequestReportListboxUntranslatableColumnList()
-non_translatable_column_item_list.sort(lambda a,b: cmp(a[1], b[1]))
+non_translatable_column_item_list.sort(key=lambda v: v[1])
 
 column_item_list.extend(non_translatable_column_item_list)
 column_item_list.append(('total', 'Total'))

bt5/erp5_configurator/DocumentTemplateItem/portal_components/document.erp5.BusinessConfiguration.py

@@ -552,12 +552,12 @@ class BusinessConfiguration(Item):
                                "immediateReindexObject"])
     # build
     configuration_save_list = self.contentValues(portal_type='Configuration Save')
-    configuration_save_list.sort(lambda x, y: cmp(x.getIntIndex(x.getIntId()),
-                                                  y.getIntIndex(y.getIntId())))
+    configuration_save_list.sort(key=lambda x: (x.getIntIndex(x.getIntId()) or 0))
     for configuration_save in configuration_save_list:
       # XXX: check which items are configure-able
       configuration_item_list = configuration_save.contentValues()
-      configuration_item_list.sort(lambda x, y: cmp(x.getIntId(), y.getIntId()))
+      configuration_item_list.sort(key=lambda x: (x.getIntId() or 0))
+
       for configurator_item in configuration_item_list:
         configurator_item.activate(**kw).fixConsistency(
             filter={"constraint_type":"configuration"})

bt5/erp5_core_test/TestTemplateItem/portal_components/test.erp5.testTrashTool.py

@@ -267,7 +267,7 @@ class TestTrashTool(ERP5TypeTestCase):
     bc_path = base_category.getPath().split('/')[2:-1]
     # check backup
     backup_subobjects_ids = trash.backupObject(trashbin, bc_path, bc_id, save=1)
-    self.assertTrue(backup_subobjects_ids.keys().sort() == list(subobjects_ids).sort())
+    self.assertEqual(sorted(backup_subobjects_ids.keys()), sorted(subobjects_ids))
 
   def stepBackupFolderObjectsWithSave(self, sequence=None, sequence_list=None, **kw):
     """
@@ -297,7 +297,7 @@ class TestTrashTool(ERP5TypeTestCase):
     bc_path = base_category.getPath().split('/')[1:-1]
     # check backup
     backup_subobjects_ids = trash.backupObject(trashbin, bc_path, bc_id, save=0)
-    self.assertTrue(backup_subobjects_ids.keys().sort() == list(subobjects_ids).sort())
+    self.assertEqual(sorted(backup_subobjects_ids.keys()), sorted(subobjects_ids))
 
   def stepBackupObjectsWithKeepingSubobjects(self, sequence=None, sequence_list=None, **kw):
     """
@@ -359,8 +359,8 @@ class TestTrashTool(ERP5TypeTestCase):
   def stepCheckRestore(self, sequence=None, sequence_list=None, **kw):
     bc_id = sequence.get('bc_id')
     bc = self.portal.portal_categories[bc_id]
-    self.assertTrue(
-      sorted(bc.objectIds()) == sorted(sequence.get('category_id_list'))
+    self.assertEqual(
+      sorted(bc.objectIds()), sorted(sequence.get('category_id_list'))
     )
     self.assertEqual(
       len(

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/EventModule_getEventDetailedLineList.py

@@ -92,11 +92,7 @@ for r_event in event_list:
           unassigned_dic[event.getSimulationState()]=unassigned_dic[event.getSimulationState()]+1
           unassigned_dic['total']=unassigned_dic['total']+1
 #Sort the result and add unassigned
-def comparator(x, y):
-  if x['ticket_type'] == y['ticket_type']:
-    return cmp(x['ticket_title'], y['ticket_title'])
-  return cmp(x['ticket_type'], y['ticket_type'])
-column_list.sort(comparator)
+column_list.sort(key=lambda x: (x['ticket_type'], x['ticket_title']))
 if unassigned_dic['total']>0: column_list.append(unassigned_dic)
 #fill line_list that is returned to report
 line_list = []

bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/Category_getCompactChildItemList.py

@@ -12,12 +12,9 @@ def getCompactTitle(category):
     title_list.reverse()
   return '/'.join(title_list)
 
-def compareTitle(a, b):
-  return cmp(a[1], b[1])
-
 def getCompactChildItemList(context):
   result = context.getCategoryChildItemList(display_method=getCompactTitle)
-  result.sort(compareTitle)
+  result.sort(key=lambda x: x[1])
   return result
 
 from Products.ERP5Type.Cache import CachingMethod

bt5/erp5_knowledge_pad/ExtensionTemplateItem/portal_components/extension.erp5.GetRssDataAsDict.py

@@ -58,7 +58,7 @@ def getRssDataAsDict(context, url, username=None, password=None):
     entry_dict['updated_parsed'] = entry.get('updated_parsed', None)
     result['items'].append(entry_dict)
   # sort by date
-  result['items'] = sorted(result['items'], key=lambda k: k['updated_parsed'])
+  result['items'] = sorted(result['items'], key=lambda k: k['updated_parsed'] or ())
   result['items'].reverse()
   result['status'] = 0
   return result
\ No newline at end of file

bt5/erp5_mrp/TestTemplateItem/portal_components/test.erp5.testMRP.py

@@ -28,6 +28,7 @@
 
 import unittest
 from DateTime import DateTime
+from Products.ERP5Type.Utils import OrderableKey
 from erp5.component.test.testBPMCore import TestBPMMixin
 from six.moves import range
 import six
@@ -341,18 +342,18 @@ class TestMRPImplementation(TestMRPMixin):
         reference = None
       movement_list.append((sm.getTradePhase(), sm.getQuantity(),
                             reference, sm.getIndustrialPhaseList()))
-    movement_list.sort()
-    self.assertEqual(movement_list, sorted((
-      ('mrp/manufacturing_step_0', -10.0, None, []),
+    movement_list.sort(key=lambda x: [OrderableKey(e) for e in x])
+    self.assertEqual(movement_list, [
       ('mrp/manufacturing_step_0', -30.0, None, []),
+      ('mrp/manufacturing_step_0', -10.0, None, []),
       ('mrp/manufacturing_step_0', 10.0,
        'pr/mrp/manufacturing_step_0', ['trade_phase/mrp/manufacturing_step_0']),
+      ('mrp/manufacturing_step_1', -40.0, None, []),
+      ('mrp/manufacturing_step_1', -10.0, None, []),
       ('mrp/manufacturing_step_1', -10.0,
        'cr/mrp/manufacturing_step_1', ['trade_phase/mrp/manufacturing_step_0']),
-      ('mrp/manufacturing_step_1', -10.0, None, []),
-      ('mrp/manufacturing_step_1', -40.0, None, []),
       ('mrp/manufacturing_step_1', 10.0, 'pr', []),
-      )))
+    ])
 
     order.confirm()
     # Build Manufacturing Order

bt5/erp5_ooo_import/SkinTemplateItem/portal_skins/erp5_ooo_import/Base_getActiveProcessFromSelectionList.py

@@ -16,6 +16,4 @@ for (x,y) in selection_param_list:
 
 active_process_list = [(y,x) for (x,y) in active_process_dict.items()]
 
-active_process_list.sort(lambda x, y: cmp(x[1],y[1]), reverse=True )
-
-return active_process_list
+return sorted(active_process_list, key=lambda item: item[1], reverse=True)

bt5/erp5_ooo_import/SkinTemplateItem/portal_skins/erp5_ooo_import/Base_getReportResultList.py

@@ -17,7 +17,7 @@ if active_process_path is None:
 active_process_value = context.getPortalObject().restrictedTraverse(active_process_path)
 result_list = [[x.method_id, x.result] for x in active_process_value.getResultList()]
 
-result_list.sort()
+result_list.sort(key=str)
 
 for [method_id, result] in result_list:
   safe_id = context.Base_getSafeIdFromString('result %s' % num)

bt5/erp5_payroll/SkinTemplateItem/portal_skins/erp5_payroll/AccountingTransactionModule_getNetSalaryReportSectionLineList.py

@@ -58,13 +58,7 @@ for inventory in portal.portal_simulation.getInventoryList(
 
 request.set('total_price', total_price)
 
-def sort_method(a, b):
-  employee_career_reference_diff = cmp(a.employee_career_reference,
-                                       b.employee_career_reference)
-  if employee_career_reference_diff:
-    return employee_career_reference_diff
-  return cmp(a.employee_title, b.employee_title)
-
-object_list.sort(sort_method)
-
-return object_list
+return sorted(
+  object_list,
+  key=lambda o: (o.employee_career_reference or '', o.employee_title)
+)

bt5/erp5_payroll/SkinTemplateItem/portal_skins/erp5_payroll/AccountingTransactionModule_getPaySheetLineReportSectionLineList.py

@@ -112,21 +112,14 @@ request.set('base_total', base_total)
 request.set('total', total)
 
 
-sorted_inventory_list = []
-sorted_inventory_list = inventory_list.values()
-
 # sort by salary range, and add intermediate sums if needed
-def sort_method(a, b):
-  salary_range_diff = cmp(a.salary_range, b.salary_range)
-  if salary_range_diff:
-    return salary_range_diff
-  employee_career_reference_diff = cmp(a.employee_career_reference,
-                                       b.employee_career_reference)
-  if employee_career_reference_diff:
-    return employee_career_reference_diff
-  return cmp(a.employee_title, b.employee_title)
-
-sorted_inventory_list.sort(sort_method)
+sorted_inventory_list = sorted(
+  inventory_list.values(),
+  key=lambda i: (
+    i.salary_range or '',
+    i.employee_career_reference or '',
+    i.employee_title or '',
+  ))
 
 i = 0
 intermediate_base_total = 0

bt5/erp5_payroll/SkinTemplateItem/portal_skins/erp5_payroll/PaySheetTransaction_getEditableObjectLineList.py

@@ -9,12 +9,9 @@
 from Products.ERP5Type.Utils import cartesianProduct
 from Products.ERP5Type.Message import translateString
 
-def sortByIntIndex(a, b):
-  return cmp(a.getIntIndex(), b.getIntIndex())
-
 portal_type_list = ['Pay Sheet Model Line']
 sub_object_list = context.getInheritedObjectValueList(portal_type_list)
-sub_object_list.sort(sortByIntIndex)
+sub_object_list.sort(key=lambda x:x.getIntIndex())
 model_line_list = sub_object_list
 
 # remove editable model line
@@ -117,37 +114,16 @@ if batch_mode:
   return object_dict_list
 
 # sort results
-
-def sortByTitleAscending(x, y):
-  return cmp(x.getTitle(), y.getTitle())
-
-def sortByTitleDescending(x, y):
-  return cmp(y.getTitle(), x.getTitle())
-
-def sortByIntIndexAscending(x, y):
-  return cmp(x.getIntIndex(), y.getIntIndex())
-
-def sortByIntIndexDescending(x, y):
-  return cmp(y.getIntIndex(), x.getIntIndex())
-
-sortByDefaultSortMethod = sortByIntIndexAscending
-
 if 'sort_on' in kw:
   sort_on = kw['sort_on']
-  if sort_on[0][0] == 'title' and sort_on[0][1]=='ascending':
-    line_list.sort(sortByTitleAscending)
-  elif sort_on[0][0] == 'title' and sort_on[0][1]=='descending':
-    line_list.sort(sortByTitleDescending)
-  elif sort_on[0][0] == 'int_index' and sort_on[0][1]=='ascending':
-    line_list.sort(sortByIntIndexAscending)
-  elif sort_on[0][0] == 'int_index' and sort_on[0][1]=='descending':
-    line_list.sort(sortByIntIndexDescending)
+  if sort_on[0][0] == 'title':
+    line_list = sorted(line_list, key=lambda x: x.getTitle() or '', reverse=sort_on[0][1]=='ascending')
+  elif sort_on[0][0] == 'int_index':
+    line_list = sorted(line_list, key=lambda x: x.getIntIndex() or 0, reverse=sort_on[0][1]=='ascending')
   else:
-    line_list.sort(sortByDefaultSortMethod)
+    line_list = sorted(line_list, key=lambda x: x.getIntIndex())
 else:
-  line_list.sort(sortByDefaultSortMethod)
-
-
+  line_list = sorted(line_list, key=lambda x: x.getIntIndex())
 
 #return pprint.pformat(line_list)
 return line_list

bt5/erp5_payroll/SkinTemplateItem/portal_skins/erp5_payroll/PaySheetTransaction_getMovementList.py

@@ -120,38 +120,12 @@ for paysheet_line in paysheet_line_list:
   if 'no_slice' in object_dict:
     line_list.append(paysheet_line.asContext(**object_dict['no_slice']))
 
-
-
-# sort results
-def sortByTitleAscending(x, y):
-  return cmp(x.getTitle(), y.getTitle())
-
-def sortByTitleDescending(x, y):
-  return cmp(y.getTitle(), x.getTitle())
-
-def sortByIntIndexAscending(x, y):
-  return cmp(x.getIntIndex(), y.getIntIndex())
-
-def sortByIntIndexDescending(x, y):
-  return cmp(y.getIntIndex(), x.getIntIndex())
-
-sortByDefaultSortMethod = sortByIntIndexAscending
-
+reverse = False
+sort_key = lambda l: (l.getIntIndex() or 0)
 if 'sort_on' in kw:
   sort_on = kw['sort_on']
-  if sort_on[0][0] == 'title' and sort_on[0][1]=='ascending':
-    line_list.sort(sortByTitleAscending)
-  elif sort_on[0][0] == 'title' and sort_on[0][1]=='descending':
-    line_list.sort(sortByTitleDescending)
-  elif sort_on[0][0] == 'int_index' and sort_on[0][1]=='ascending':
-    line_list.sort(sortByIntIndexAscending)
-  elif sort_on[0][0] == 'int_index' and sort_on[0][1]=='descending':
-    line_list.sort(sortByIntIndexDescending)
-  else:
-    line_list.sort(sortByDefaultSortMethod)
-else:
-  line_list.sort(sortByDefaultSortMethod)
-
-
+  reverse = sort_on[0][1]=='descending'
+  if sort_on[0][0] == 'title':
+    sort_key = lambda l: (l.getTitle() or '')
 
-return line_list
+return sorted(line_list, key=sort_key, reverse=reverse)

bt5/erp5_project/SkinTemplateItem/portal_skins/erp5_project/Project_generateMonthDomain.py

@@ -41,9 +41,7 @@ if depth == 0:
 
     category_list = []
     #i = 1
-    month_dict_list = month_dict.keys()
-    month_dict_list.sort()
-    for year, month in month_dict_list:
+    for year, month in sorted(month_dict.keys()):
       category_list.append(here.getObject().asContext(title="%s - %s" % (year, month),
                                                       string_index="%s-%s" % (year, month),
                                                       ))

bt5/erp5_project/SkinTemplateItem/portal_skins/erp5_project/Project_getSourceProjectRelatedTaskList.py

@@ -24,12 +24,6 @@ task_line_list = []
 for task in task_list:
   task_line_list.extend(task.contentValues(portal_type='Task Line'))
 
-def sortTaskLine(a, b):
-  result = cmp(a.getStartDate(), b.getStartDate())
-  if result == 0:
-    result = cmp(a.getTitle(), b.getTitle())
-  return result
-
-task_line_list.sort(sortTaskLine)
-
-return task_line_list
+return sorted(
+  task_line_list,
+  key=lambda tl: (tl.hasStartDate(), tl.getStartDate(), tl.getTitle()))

bt5/erp5_project/SkinTemplateItem/portal_skins/erp5_project/Project_getSourceProjectRelatedTaskReportList.py

@@ -40,12 +40,6 @@ for task in task_list:
   task_line_list.extend(task.objectValues(portal_type=('Task Line', 'Task Report Line')))
 
 
-def sortTaskLine(a, b):
-  result = cmp(a.getStartDate(), b.getStartDate())
-  if result == 0:
-    result = cmp(a.getTitle(), b.getTitle())
-  return result
-
-task_line_list.sort(sortTaskLine)
-
-return task_line_list
+return sorted(
+  task_line_list,
+  key=lambda tl: (tl.getStartDate() is not None, tl.getStartDate(), tl.getTitle()))

bt5/erp5_simulation/DocumentTemplateItem/portal_components/document.erp5.SolverProcess.py

@@ -101,8 +101,7 @@ class SolverProcess(XMLObject, ActiveProcess):
       if solver is None:
         continue
       solver_conviguration_dict = decision.getConfigurationPropertyDict()
-      configuration_mapping = solver_conviguration_dict.items()
-      configuration_mapping.sort() # Make sure the list is sorted in canonical way
+      configuration_mapping = sorted(solver_conviguration_dict.items()) # Make sure the list is sorted in canonical way
       configuration_mapping = tuple(configuration_mapping)
       for movement in decision.getDeliveryValueList():
         # Detect incompatibilities

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/InternalOrder_applyTradeCondition.py

@@ -29,40 +29,37 @@ def rank_method(trade_condition):
   if destination_section:
     destination_section_group = trade_condition.getDestinationSectionValue().getGroup()
     if destination_section == context.getDestinationSection():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   destination = trade_condition.getDestination()
   if destination:
     if destination == context.getDestination():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   if trade_condition.getSourceSection():
-    rank += 1
+    rank -= 1
     if destination_section_group:
       source_section_group = trade_condition.getSourceSectionValue().getGroup()
       if source_section_group:
         if source_section_group.startswith(destination_section_group) \
              or destination_section_group.startswith(source_section_group):
           # trade conditions where both sections are in the same group must have high priority
-          rank += 20
+          rank -= 20
   if trade_condition.getSource():
-    rank += 1
-  rank += len(trade_condition.getSpecialiseList())
+    rank -= 1
+  rank -= len(trade_condition.getSpecialiseList())
   if trade_condition.getValidationState() == 'validated':
-    rank += 2
+    rank -= 2
   return rank
 
-def sort_method(a, b):
-  return -cmp(rank_method(a), rank_method(b))
-
 while count > 0 and len(trade_condition_list) == 0:
   count -= 1
   trade_condition_list = context.portal_domains.searchPredicateList(
       predicate_context, portal_type=trade_condition_portal_type_list,
       tested_base_category_list=tested_base_category_list[:count],
-      sort_method=sort_method)
+      sort_key_method=rank_method)
 
 keep_items = {}
 if len(trade_condition_list ) == 0 :

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/OrderModule_getOrderStatList.py

@@ -57,8 +57,6 @@ if active_process_path:
 else:
   raise ValueError("No active process found to process report")
 
-def sortProduct(a, b):
-  return cmp(a['product'], b['product'])
 
 period_counter_dict = {}
 line_list = []
@@ -132,7 +130,7 @@ if len(client_dict):
 
           product_lines_list.append(obj)
       # sort product list
-      product_lines_list.sort(sortProduct)
+      product_lines_list.sort(key=lambda p: p['product'])
       extend(product_lines_list)
 else:
   # products
@@ -169,7 +167,8 @@ else:
         period_counter_dict['total amount'] = line_total_amount
       append(obj)
 
-    line_list.sort(sortProduct)
+    line_list.sort(key=lambda p: p['product'])
+
 
 obj = Object(uid="new_")
 obj["client"] = 'Total'

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/Order_printAsODSSummary.py

@@ -23,13 +23,10 @@ full_total_price = 0
 worker_column_list = []
 source_trade_dict = {}
 
-def sortMovement(a, b):
-  return cmp(a.getRelativeUrl(), b.getRelativeUrl())
-
 movement_type_list = context.getPortalMovementTypeList()
 line_list = [x for x in context.getIndexableChildValueList() if x.getPortalType() in \
               movement_type_list]
-line_list.sort(sortMovement)
+line_list.sort(key=lambda line: line.getRelativeUrl())
 
 order_type_list = context.getPortalOrderTypeList()
 def getMovementTitle(movement):

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/PurchaseOrder_applyPurchaseTradeCondition.py

@@ -27,33 +27,30 @@ def rank_method(trade_condition):
   source_section = trade_condition.getSourceSection()
   if source_section:
     if source_section == context.getSourceSection():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   source = trade_condition.getSource()
   if source:
     if source == context.getSource():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   if trade_condition.getDestinationSection():
-    rank += 1
+    rank -= 1
   if trade_condition.getDestination():
-    rank += 1
-  rank += len(trade_condition.getSpecialiseList())
+    rank -= 1
+  rank -= len(trade_condition.getSpecialiseList())
   if trade_condition.getValidationState() == 'validated':
-    rank += 2
+    rank -= 2
   return rank
 
-def sort_method(a, b):
-  return -cmp(rank_method(a), rank_method(b))
-
 while count > 0 and len(trade_condition_list) == 0:
   count -= 1
   trade_condition_list = context.portal_domains.searchPredicateList(
       predicate_context, portal_type=trade_condition_portal_type,
       tested_base_category_list=tested_base_category_list[:count],
-      sort_method=sort_method)
+      sort_key_method=rank_method)
 
 keep_items = {}
 if len(trade_condition_list ) == 0 :

bt5/erp5_trade/SkinTemplateItem/portal_skins/erp5_trade/SaleOrder_applySaleTradeCondition.py

@@ -28,35 +28,32 @@ def rank_method(trade_condition):
   destination_project = trade_condition.getDestinationProject()
   if destination_project:
     if destination_project == context.getDestinationProject():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   destination_section = trade_condition.getDestinationSection()
   if destination_section:
     if destination_section == context.getDestinationSection():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   destination = trade_condition.getDestination()
   if destination:
     if destination == context.getDestination():
-      rank += 10
+      rank -= 10
     else:
-      rank -= 2
+      rank += 2
   if trade_condition.getSourceProject():
-    rank += 1
+    rank -= 1
   if trade_condition.getSourceSection():
-    rank += 1
+    rank -= 1
   if trade_condition.getSource():
-    rank += 1
-  rank += len(trade_condition.getSpecialiseList())
+    rank -= 1
+  rank -= len(trade_condition.getSpecialiseList())
   if trade_condition.getValidationState() == 'validated':
-    rank += 2
+    rank -= 2
   return rank
 
-def sort_method(a, b):
-  return -cmp(rank_method(a), rank_method(b))
-
 def filter_method(trade_condition_list):
   # Reject trade condition which has a non different value than the order
   filtered_trade_condition_list = []
@@ -76,7 +73,7 @@ while count > 0 and len(trade_condition_list) == 0:
       predicate_context, portal_type=trade_condition_portal_type,
       tested_base_category_list=tested_base_category_list[:count],
       filter_method=filter_method,
-      sort_method=sort_method)
+      sort_key_method=rank_method)
 
 keep_items = {}
 if len(trade_condition_list ) == 0 :

bt5/erp5_web/DocumentTemplateItem/portal_components/document.erp5.WebSite.py

@@ -174,11 +174,7 @@ class WebSite(WebSection):
           if sub_path in section_dict:
             del section_dict[sub_path]
 
-      section_list = section_dict.values()
-
       # Sort by Index
-      section_list.sort(key=lambda x: x.getIntIndex())
-
-      return section_list
+      return sorted(section_dict.values(), key=lambda x: x.getIntIndex())
     else:
       return []
\ No newline at end of file

bt5/erp5_web_service/ToolComponentTemplateItem/portal_components/tool.erp5.WebServiceTool.py

@@ -93,9 +93,7 @@ class WebServiceTool(BaseTool):
     """
     Return list of available connection plugins
     """
-    plugin_list = connection_plugin_registry.keys()
-    plugin_list.sort()
-    return plugin_list
+    return sorted(connection_plugin_registry.keys())
 
   security.declareProtected(Permissions.ManagePortal, 'connect')
   def connect(self, url, user_name=None, password=None, transport=None, transport_kw=None):

product/CMFCategory/Category.py

@@ -28,6 +28,7 @@
 
 from past.builtins import cmp
 import string
+import warnings
 
 from Products.ERP5Type.Globals import InitializeClass, DTMLFile
 from AccessControl import ClassSecurityInfo
@@ -42,6 +43,11 @@ from Products.ERP5Type.Core.Folder import Folder
 from Products.CMFCategory.Renderer import Renderer
 from Products.ERP5Type.Utils import sortValueList
 from Products.ERP5Type.Cache import CachingMethod
+import six
+if six.PY3:
+  from functools import cmp_to_key
+  def cmp(a, b):
+      return (a > b) - (a < b)
 
 DEFAULT_CACHE_FACTORY = 'erp5_ui_long'
 
@@ -277,6 +283,7 @@ class Category(Folder):
     def getCategoryChildValueList(self, recursive=1, include_if_child=1,
                                   is_self_excluded=1, sort_on=None,
                                   sort_order=None, local_sort_method=None,
+                                  local_sort_key=None,
                                   local_sort_id=None, checked_permission=None,
                                   **kw):
       """
@@ -300,8 +307,13 @@ class Category(Folder):
                               WARNING: using these parameters can slow down
                               significantly, because this is written in Python
 
+          local_sort_key    - When using the default preorder traversal, use
+                              this function as sort key for objects of the same
+                              depth.
+
           local_sort_method - When using the default preorder traversal, use
                               this function to sort objects of the same depth.
+                              DEPRECATED, use local_sort_key
 
           local_sort_id     - When using the default preorder traversal, sort
                               objects of the same depth by comparing their
@@ -320,21 +332,26 @@ class Category(Folder):
 
       child_value_list = self.objectValues(self.allowed_types)
       if local_sort_id:
-        if isinstance(local_sort_id, (tuple, list)):
-          def sort_method(a, b):
-            for sort_id in local_sort_id:
-              diff = cmp(a.getProperty(sort_id, 0), b.getProperty(sort_id, 0))
-              if diff != 0:
-                return diff
-            return 0
-          local_sort_method = sort_method
-        else:
-          local_sort_method = lambda a, b: cmp(a.getProperty(local_sort_id, 0),
-                                               b.getProperty(local_sort_id, 0))
+        if not isinstance(local_sort_id, (tuple, list)):
+          local_sort_id = (local_sort_id, )
+        def sort_key(c):
+          k = []
+          for sort_id in local_sort_id:
+            v = c.getProperty(sort_id)
+            k.extend([v is not None, v])
+          return k
+        local_sort_key = sort_key
       if local_sort_method:
-        # sort objects at the current level
+        warnings.warn(
+          "`local_sort_method` argument is deprecated, use `local_sort_key` instead",
+          DeprecationWarning)
         child_value_list = list(child_value_list)
-        child_value_list.sort(local_sort_method)
+        if six.PY2:
+          child_value_list.sort(local_sort_method)
+        else:
+          local_sort_key = cmp_to_key(local_sort_method)
+      if local_sort_key:
+        child_value_list = sorted(child_value_list, key=local_sort_key)
 
       if recursive:
         for c in child_value_list:
@@ -344,6 +361,7 @@ class Category(Folder):
                                        is_self_excluded=0,
                                        include_if_child=include_if_child,
                                        local_sort_method=local_sort_method,
+                                       local_sort_key=local_sort_key,
                                        local_sort_id=local_sort_id))
       else:
         for c in child_value_list:
@@ -831,7 +849,7 @@ class BaseCategory(Category):
                                                  'getCategoryChildValueList')
     def getCategoryChildValueList(self, is_self_excluded=1, recursive=1,
                      include_if_child=1, sort_on=None, sort_order=None,
-                     local_sort_method=None, local_sort_id=None,
+                     local_sort_method=None, local_sort_key=None, local_sort_id=None,
                      checked_permission=None, **kw):
       """
           List the child objects of this category and all its subcategories.
@@ -853,8 +871,13 @@ class BaseCategory(Category):
                   the 'sort_on' attribute. The default is to do a preorder tree
                   traversal on all subobjects.
 
+          local_sort_key    - When using the default preorder traversal, use
+                              this function as sort key for objects of the same
+                              depth.
+
           local_sort_method - When using the default preorder traversal, use
                               this function to sort objects of the same depth.
+                              DEPRECATED, use local_sort_key
 
           local_sort_id     - When using the default preorder traversal, sort
                               objects of the same depth by comparing their
@@ -872,29 +895,35 @@ class BaseCategory(Category):
 
       child_value_list = self.objectValues(self.allowed_types)
       if local_sort_id:
-        if isinstance(local_sort_id, (tuple, list)):
-          def sort_method(a, b):
-            for sort_id in local_sort_id:
-              diff = cmp(a.getProperty(sort_id, 0), b.getProperty(sort_id, 0))
-              if diff != 0:
-                return diff
-            return 0
-          local_sort_method = sort_method
-        else:
-          local_sort_method = lambda a, b: cmp(a.getProperty(local_sort_id, 0),
-                                             b.getProperty(local_sort_id, 0))
+        if not isinstance(local_sort_id, (tuple, list)):
+          local_sort_id = (local_sort_id, )
+        def sort_key(c):
+          k = []
+          for sort_id in local_sort_id:
+            v = c.getProperty(sort_id)
+            k.extend([v is not None, v])
+          return k
+        local_sort_key = sort_key
       if local_sort_method:
-        # sort objects at the current level
+        warnings.warn(
+          "`local_sort_method` argument is deprecated, use `local_sort_key` instead",
+          DeprecationWarning)
         child_value_list = list(child_value_list)
-        child_value_list.sort(local_sort_method)
+        if six.PY2:
+          child_value_list.sort(local_sort_method)
+        else:
+          local_sort_key = cmp_to_key(local_sort_method)
+      if local_sort_key:
+        child_value_list = sorted(child_value_list, key=local_sort_key)
 
       if recursive:
         for c in child_value_list:
           value_list.extend(c.getCategoryChildValueList(recursive=1,
                                         is_self_excluded=0,
                                         include_if_child=include_if_child,
-                                        local_sort_id=local_sort_id,
-                                        local_sort_method=local_sort_method))
+                                        local_sort_method=local_sort_method,
+                                        local_sort_key=local_sort_key,
+                                        local_sort_id=local_sort_id))
       else:
         for c in child_value_list:
           if include_if_child:

product/CMFCategory/Renderer.py

@@ -30,6 +30,9 @@
 from Products.CMFCategory.Filter import Filter
 from ZODB.POSException import ConflictError
 from zLOG import LOG, PROBLEM
+import six
+if six.PY3:
+  from functools import cmp_to_key
 
 class Renderer(Filter):
   """
@@ -42,7 +45,7 @@ class Renderer(Filter):
 
   def __init__(self, spec = None, filter = None, portal_type = None,
                      display_id = None, sort_id = None,
-                     display_method = None, sort_method = None, filter_method = None,
+                     display_method = None, sort_key = None, sort_method = None, filter_method = None,
                      filter_node=0, disable_node=0,
                      filter_leave=0, disable_leave=0,
                      is_right_display = 0, translate_display = 0,
@@ -74,7 +77,10 @@ class Renderer(Filter):
                     foo2      5
           display order will be (foo1, foo, foo2)
 
-    - *sort_method*: a callable method which provides a sort function (?la cmp)
+    - *sort_key*: a callable method used to sort the values, as in sort(key=sort_key)
+
+    - *sort_method*: a callable method used to sort the values, as in python2 cmp.
+            DEPRECATED, use sort_key.
 
     - *is_right_display*: use the right value in the couple as the display value.
 
@@ -109,6 +115,7 @@ class Renderer(Filter):
     self.display_id = display_id
     self.sort_id = sort_id
     self.display_method = display_method
+    self.sort_key = sort_key
     self.sort_method = sort_method
     self.is_right_display = is_right_display
     self.translate_display = translate_display
@@ -135,9 +142,17 @@ class Renderer(Filter):
     value_list = self.getObjectList(value_list)
     value_list = self.filter(value_list)
     if self.sort_method is not None:
-      value_list.sort(self.sort_method)
+      if six.PY2:
+        value_list.sort(self.sort_method)
+      else:
+        value_list.sort(key=cmp_to_key(self.sort_method))
+    elif self.sort_key is not None:
+      value_list.sort(key=self.sort_key)
     elif self.sort_id is not None:
-      value_list.sort(key=lambda x: x.getProperty(self.sort_id))
+      def sort_key(x):
+        k = x.getProperty(self.sort_id)
+        return (k is not None, k)
+      value_list.sort(key=sort_key)
 
     # If base=1 but base_category is None, it is necessary to guess the base category
     # by heuristic.

product/CMFCategory/tests/testCMFCategory.py

@@ -30,6 +30,7 @@
 import mock
 from collections import deque
 import unittest
+import warnings
 
 from Acquisition import aq_base
 from Products.ERP5Type.tests.ERP5TypeTestCase import ERP5TypeTestCase
@@ -38,6 +39,9 @@ from Testing.ZopeTestCase.PortalTestCase import PortalTestCase
 from AccessControl.SecurityManagement import newSecurityManager
 from AccessControl.SecurityManagement import noSecurityManager
 import six
+if six.PY3:
+  def cmp(a, b):
+      return (a > b) - (a < b)
 
 class TestCMFCategory(ERP5TypeTestCase):
 
@@ -949,8 +953,8 @@ class TestCMFCategory(ERP5TypeTestCase):
     self.assertSameSet(c1.getCategoryChildValueList(is_self_excluded=0),
                                                     (c1, c11, c111))
 
-  def test_24_getCategoryChildValueListLocalSortMethod(self):
-    '''Test getCategoryChildValueList local sort method'''
+  def test_24_getCategoryChildValueListLocalSort(self):
+    '''Test getCategoryChildValueList local sort'''
     pc = self.getCategoriesTool()
     bc = pc.newContent(portal_type='Base Category', id='child_test')
     c1 = bc.newContent(portal_type='Category', id='1', int_index=10, title='C')
@@ -971,17 +975,54 @@ class TestCMFCategory(ERP5TypeTestCase):
     # sort_order which sort the whole list regardless of the original
     # structure).
 
-    # This can be done either with a function (like cmp argument to python
-    # list sort)
+    sort_key_calls = []
+    def sort_key(c):
+      sort_key_calls.append(c)
+      return c.getTitle()
+
+    # here c1, c2, c3 are sorted by their titles
+    self.assertEqual(list(bc.getCategoryChildValueList(
+                                        local_sort_key=sort_key)),
+                      [c3, c2, c1, c11, c111, c12])
+    self.assertTrue(sort_key_calls)
+    # here c11 & c12 are sorted by their titles
+    self.assertEqual(list(c1.getCategoryChildValueList(
+                              local_sort_key=sort_key)), [c11, c111, c12])
+    self.assertTrue(sort_key_calls)
+
+    # This can be done with a function, using `local_sort_key` or
+    # `local_sort_method` (with is like cmp argument to python2 list sort)
+    sort_func_calls = []
     def sort_func(a, b):
+      sort_func_calls.append((a, b))
       return cmp(a.getTitle(), b.getTitle())
+    # `local_sort_method` is deprecated, so using it cause a warning to be
+    # emitted. Because the method exists on both category and base category
+    # there can be two warnings.
+    with warnings.catch_warnings(record=True) as warning_list:
+      warnings.simplefilter("always")
+      c1.getCategoryChildValueList(local_sort_method=sort_func)
+    self.assertEqual(
+      {str(w.message) for w in warning_list},
+      {'`local_sort_method` argument is deprecated, use `local_sort_key` instead'})
+    with warnings.catch_warnings(record=True) as warning_list:
+      warnings.simplefilter("always")
+      bc.getCategoryChildValueList(local_sort_method=sort_func)
+    self.assertEqual(
+      {str(w.message) for w in warning_list},
+      {'`local_sort_method` argument is deprecated, use `local_sort_key` instead'})
+
+    del sort_func_calls[:]
     # here c1, c2, c3 are sorted by their titles
     self.assertEqual(list(bc.getCategoryChildValueList(
                                         local_sort_method=sort_func)),
                       [c3, c2, c1, c11, c111, c12])
+    self.assertTrue(sort_func_calls)
+    del sort_func_calls[:]
     # here c11 & c12 are sorted by their titles
     self.assertEqual(list(c1.getCategoryChildValueList(
                               local_sort_method=sort_func)), [c11, c111, c12])
+    self.assertTrue(sort_func_calls)
 
     # This can also be done with a local_sort_id, then objects are sorted by
     # comparing this 'sort_id' property (using getProperty())

product/ERP5/Document/Alarm.py

@@ -348,12 +348,8 @@ class Alarm(XMLObject, PeriodicityMixin):
     result_list = [x for x in active_process.getResultList() if x is not None]
     attachment_list = []
     if len(result_list):
-      def sort_result_list(a, b):
-        result = - cmp(a.severity, b.severity)
-        if result == 0:
-          result = cmp(a.summary, b.summary)
-        return result
-      result_list.sort(sort_result_list)
+      # Here we assume that severity type is int or float and summary type is same for all entries.
+      result_list.sort(key=lambda e: (-e.severity, e.summary))
       rendered_alarm_result_list = ['%02i summary: %s\n%s\n----' %
         (int(getattr(x, 'severity', 0)), getattr(x, 'summary', ''), getattr(x, 'detail', ''))
         for x in result_list]

product/ERP5/bootstrap/erp5_core/DocumentTemplateItem/portal_components/document.erp5.Document.py

@@ -497,8 +497,7 @@ class Document(DocumentExtensibleTraversableMixin, XMLObject, UrlMixin,
     tmp = {}
     for match in rx_search.finditer(text):
       group = match.group()
-      group_item_list = match.groupdict().items()
-      group_item_list.sort()
+      group_item_list = sorted(match.groupdict().items())
       key = (group, tuple(group_item_list))
       tmp[key] = None
     for group, group_item_tuple in tmp.keys():

product/ERP5/bootstrap/erp5_core/DocumentTemplateItem/portal_components/document.erp5.ImmobilisableItem.py

@@ -316,8 +316,7 @@ class ImmobilisableItem(Item, Amount):
       Returns a list of dictionaries representing immobilisation periods for the object
       from_date is included, to_date is excluded
     """
-    kw_key_list = kw.keys()
-    kw_key_list.sort()
+    kw_key_list = sorted(kw.keys())
     if kw_key_list.count('immo_cache_dict'):
       kw_key_list.remove('immo_cache_dict')
     immo_cache_dict = kw.get('immo_cache_dict', {'period':{},

product/ERP5/bootstrap/erp5_core/ExtensionTemplateItem/portal_components/extension.erp5.FolderWorkflowActionUtils.py

@@ -29,7 +29,6 @@
 
 import six
 
-from past.builtins import cmp
 from hashlib import md5
 
 # Some workflow does not make sense in the context of mass transition and are
@@ -148,14 +147,7 @@ def getDocumentGroupByWorkflowStateList(self, form_id='', **kw):
                 workflow_state=current_workflow_state,
                 ))
 
-  # Let us sort this list by translated title of workflow state and workflow
-  def compareState(a, b):
-    return cmp((a.workflow_title, a.translated_workflow_state_title),
-               (b.workflow_title, b.translated_workflow_state_title))
-  document_list.sort(compareState)
-
-  # Return result
-  return document_list
+  return sorted(document_list, key=lambda b: (b.workflow_title, b.translated_workflow_state_title))
 
 
 

product/ERP5/bootstrap/erp5_core/MixinTemplateItem/portal_components/mixin.erp5.CachedConvertableMixin.py

@@ -42,9 +42,7 @@ from OFS.Image import Pdata, Image as OFSImage
 from DateTime import DateTime
 
 def makeSortedTuple(kw):
-  items = kw.items()
-  items.sort()
-  return tuple(items)
+  return tuple(sorted(kw.items()))
 
 def hashPdataObject(pdata_object):
   """Pdata objects are iterable, use this feature strongly

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Category_getSortedCategoryChildValueList.py

-from erp5.component.module.Log import log
-# this script is no longer needed.
-log('Category_getSortedCategoryChildValueList', 'use getCategoryChildValueList method')
-
-value_list = [o for o in context.getCategoryChildValueList() if o.getRelativeUrl() != context.getRelativeUrl()]
-sort_id='int_index'
-value_list.sort(key=lambda x: x.getProperty(sort_id))
-return value_list

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Category_getSortedCategoryChildValueList.xml

-<?xml version="1.0"?>
-<ZopeData>
-  <record id="1" aka="AAAAAAAAAAE=">
-    <pickle>
-      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_bind_names</string> </key>
-            <value>
-              <object>
-                <klass>
-                  <global name="_reconstructor" module="copy_reg"/>
-                </klass>
-                <tuple>
-                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
-                  <global name="object" module="__builtin__"/>
-                  <none/>
-                </tuple>
-                <state>
-                  <dictionary>
-                    <item>
-                        <key> <string>_asgns</string> </key>
-                        <value>
-                          <dictionary>
-                            <item>
-                                <key> <string>name_container</string> </key>
-                                <value> <string>container</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_context</string> </key>
-                                <value> <string>context</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_m_self</string> </key>
-                                <value> <string>script</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_subpath</string> </key>
-                                <value> <string>traverse_subpath</string> </value>
-                            </item>
-                          </dictionary>
-                        </value>
-                    </item>
-                  </dictionary>
-                </state>
-              </object>
-            </value>
-        </item>
-        <item>
-            <key> <string>_params</string> </key>
-            <value> <string>**kw</string> </value>
-        </item>
-        <item>
-            <key> <string>id</string> </key>
-            <value> <string>Category_getSortedCategoryChildValueList</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-</ZopeData>

product/ERP5/bootstrap/erp5_core/ToolComponentTemplateItem/portal_components/tool.erp5.DomainTool.py

@@ -27,6 +27,7 @@
 #
 ##############################################################################
 
+import functools
 from collections import defaultdict
 from AccessControl import ClassSecurityInfo
 from Products.ERP5Type.Globals import InitializeClass
@@ -242,7 +243,10 @@ class DomainTool(BaseTool):
       if sort_key_method is not None:
         result_list.sort(key=sort_key_method)
       elif sort_method is not None:
-        result_list.sort(cmp=sort_method)
+        if six.PY3:
+          result_list.sort(key=functools.cmp_to_key(sort_method))
+        else:
+          result_list.sort(cmp=sort_method)
     return result_list
 
   # XXX FIXME method should not be public

product/ERP5/bootstrap/erp5_core/ToolComponentTemplateItem/portal_components/tool.erp5.SimulationTool.py

@@ -28,6 +28,7 @@ from __future__ import division
 #
 ##############################################################################
 
+import functools
 from past.builtins import cmp
 from six import string_types as basestring
 from Products.CMFCore.utils import getToolByName
@@ -1636,7 +1637,10 @@ class SimulationTool(BaseTool):
               result *= -1
             break
         return result
-      sorted_inventory_list.sort(cmp_inventory_line)
+      if six.PY2:
+        sorted_inventory_list.sort(cmp_inventory_line)
+      else:
+        sorted_inventory_list.sort(key=functools.cmp_to_key(cmp_inventory_line))
     # Brain is rebuild properly using tuple not r instance
     column_list = first_result._searchable_result_columns()
     column_name_list = [x['name'] for x in column_list]

product/ERP5Form/Form.py

@@ -994,8 +994,7 @@ class ERP5Form(Base, ZMIForm, ZopePageTemplate):
         # for skin_folder_id in self.getSimilarSkinFolderIdList():
         for skin_folder_id in self.getPortalObject().portal_skins.objectIds():
           iterate(getattr(skins_tool, skin_folder_id))
-        proxy_dict_list = proxy_dict.values()
-        proxy_dict_list.sort(key=lambda x: x['short_path'])
+        proxy_dict_list = sorted(proxy_dict.values(), key=lambda x: x['short_path'])
         for item in proxy_dict_list:
           item['related_proxy_list'].sort(key=lambda x: x['short_path'])
 

product/ERP5Type/Core/Predicate.py

@@ -332,9 +332,7 @@ class Predicate(XMLObject):
       criterion_dict[p].property = p
       criterion_dict[p].min = self._range_criterion.get(p, (None, None))[0]
       criterion_dict[p].max = self._range_criterion.get(p, (None, None))[1]
-    criterion_list = criterion_dict.values()
-    criterion_list.sort()
-    return criterion_list
+    return sorted(criterion_dict.values())
 
   security.declareProtected( Permissions.ModifyPortalContent, 'setCriterion' )
   def setCriterion(self, property, identity=None, min=None, max=None, **kw):

product/ERP5Type/Utils.py

@@ -29,11 +29,12 @@
 
 # Required modules - some modules are imported later to prevent circular deadlocks
 from __future__ import absolute_import
-from past.builtins import cmp
 from six import int2byte as chr
 from six import string_types as basestring
 from six.moves import xrange
 import six
+if six.PY3:
+  from functools import cmp_to_key, total_ordering
 import os
 import re
 import string
@@ -123,10 +124,47 @@ from Products.ERP5Type.Globals import get_request
 from .Accessor.TypeDefinition import type_definition
 from .Accessor.TypeDefinition import list_types
 
+if six.PY3:
+  def cmp(a, b):
+    try:
+      return (a > b) - (a < b)
+    except TypeError:
+      if a is None:
+          return -1
+      elif b is None:
+          return 1
+      type_a = '' if isinstance(a, (int, float)) else type(a).__name__
+      type_b = '' if isinstance(b, (int, float)) else type(b).__name__
+      return (type_a > type_b) - (type_a < type_b)
+else:
+  import __builtin__
+  cmp = __builtin__.cmp
+
 #####################################################
 # Generic sort method
 #####################################################
 
+if six.PY2:
+  OrderableKey = lambda x: x
+else:
+  @total_ordering
+  class OrderableKey(object):
+    def __init__(self, value):
+      self.value = value
+
+    def __lt__(self, other):
+      if not isinstance(other, OrderableKey):
+        raise TypeError
+      return cmp(self.value, other.value) != 1
+
+    def __eq__(self, other):
+      if not isinstance(other, OrderableKey):
+        raise TypeError
+      return self.value == other.value
+
+    def __repr__(self):
+      return 'OrderableKey(%r)' % self.value
+
 sort_kw_cache = {}
 
 def sortValueList(value_list, sort_on=None, sort_order=None, **kw):
@@ -184,7 +222,10 @@ def sortValueList(value_list, sort_on=None, sort_order=None, **kw):
               except TypeError:
                 pass
             value_list.append(x)
-          return value_list
+          if six.PY2:
+            return value_list
+          else:
+            return [OrderableKey(e) for e in value_list]
         sort_kw = {'key':sortValue, 'reverse':reverse}
         sort_kw_cache[(sort_on, sort_order)] = sort_kw
       else:
@@ -206,7 +247,10 @@ def sortValueList(value_list, sort_on=None, sort_order=None, **kw):
             if result != 0:
               break
           return result
-        sort_kw = {'cmp':sortValues}
+        if six.PY2:
+          sort_kw = {'cmp':sortValues}
+        else:
+          sort_kw = {'key': cmp_to_key(sortValues)}
         sort_kw_cache[(sort_on, sort_order)] = sort_kw
 
     if isinstance(value_list, LazyMap):

product/ERP5Type/patches/diff.py

@@ -76,8 +76,8 @@ def DeepDiff__diff(self, level, parents_ids=frozenset({})):
         # by deepdiff. Thus, sorting tuples before diffing will atleast give us
         # diff in the format where we would be able to see the more asthetic
         # diff for tuples.
-        level.t1 = sorted(level.t1)
-        level.t2 = sorted(level.t2)
+        level.t1 = sorted(level.t1, key=str)
+        level.t2 = sorted(level.t2, key=str)
         self._DeepDiff__diff_tuple(level, parents_ids)
 
     elif isinstance(level.t1, (set, frozenset)):

product/ERP5Type/tests/testERP5Type.py

@@ -39,6 +39,7 @@ from Acquisition import aq_base
 from Products.ERP5Type.tests.ERP5TypeTestCase import ERP5TypeTestCase
 from AccessControl.ZopeGuards import guarded_import
 from Products.ERP5Type.tests.utils import LogInterceptor, createZODBPythonScript
+from Products.ERP5Type.Utils import OrderableKey, cmp
 
 class TestERP5Type(ERP5TypeTestCase, LogInterceptor):
     """
@@ -284,6 +285,21 @@ class TestERP5Type(ERP5TypeTestCase, LogInterceptor):
       self.assertIn(script, person.objectValues())
       self.assertNotIn(script, person.objectValues(portal_type='Person'))
 
+    def test_cmp(self):
+      self.assertEqual(cmp(None, 0), -1)
+      self.assertEqual(cmp(None, ''), -1)
+      self.assertEqual(cmp(0, ''), -1)
+
+    def test_OrderableKey(self):
+      self.assertEqual(
+        sorted([1, '', None], key=lambda x: OrderableKey(x)),
+        [None, 1, '']
+      )
+      o1 = [OrderableKey(e) for e in (None, 1)]
+      o2 = [OrderableKey(e) for e in (0, 0)]
+      self.assertEqual(sorted([o1, o2]), [o1, o2])
+      self.assertEqual(sorted([o2, o1]), [o1, o2])
+
 def test_suite():
   suite = unittest.TestSuite()
   suite.addTest(unittest.makeSuite(TestERP5Type))

product/Formulator/FormToXML.py

@@ -38,8 +38,7 @@ def formToXML(form, prologue=1):
 
         fields.append(field_element)
         values_element = SubElement(field_element, 'values')
-        items = field.values.items()
-        items.sort()
+        items = sorted(field.values.items())
         for key, value in items:
           if value is None:
             continue
@@ -64,8 +63,7 @@ def formToXML(form, prologue=1):
             value_element.text = value_element.text.decode(encoding)
 
         tales_element = SubElement(field_element, 'tales')
-        items = field.tales.items()
-        items.sort()
+        items = sorted(field.tales.items())
         for key, value in items:
           if value:
             tale_element = SubElement(tales_element, key)

product/HBTreeFolder2/HBTreeFolder2.py

@@ -423,7 +423,10 @@ class HBTreeFolder2Base (Persistent):
                     s.append((k, six.iteritems(v)))
                 break
               s.append((k, six.iteritems(v)))
-        r.sort()
+        if six.PY2:
+          r.sort()
+        else:
+          r.sort(key=lambda e: '' if e is None else e)
         return r
 
     security.declareProtected(access_contents_information,