py2/py3: cmp() and sort(cmp=...) do not exist in Python 3.

also str representation of unicode character is different.

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

@@ -780,15 +780,16 @@ 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 (
+        category_index_dict.get(a.getCollectOrderGroup()),
+        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):

product/CMFCategory/Category.py

@@ -42,12 +42,20 @@ 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'
 
 from zLOG import LOG
 
-NBSP_UTF8 = u'\xA0'.encode('utf-8')
+if six.PY2:
+  NBSP_UTF8 = u'\xA0'.encode('utf-8')
+else:
+  NBSP_UTF8 = '\xA0'
 
 manage_addCategoryForm=DTMLFile('dtml/category_add', globals())
 
@@ -331,8 +339,10 @@ class Category(Folder):
       if local_sort_method:
         # sort objects at the current level
         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:
+          child_value_list.sort(key=cmp_to_key(local_sort_method))
       if recursive:
         for c in child_value_list:
           # Do not pass sort_on / sort_order parameters intentionally, because
@@ -883,7 +893,10 @@ class BaseCategory(Category):
       if local_sort_method:
         # sort objects at the current level
         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:
+          child_value_list.sort(key=cmp_to_key(local_sort_method))
 
       if recursive:
         for c in child_value_list:

product/CMFCategory/tests/testCMFCategory.py

@@ -38,6 +38,9 @@ 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):
 

product/ERP5Type/Utils.py

@@ -34,6 +34,8 @@ 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
 import os
 import re
 import string
@@ -206,7 +208,10 @@ 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):