--- a/src/pyams_content/shared/view/merge.py	Mon Jan 07 11:36:09 2019 +0100
+++ b/src/pyams_content/shared/view/merge.py	Tue Jan 08 14:02:06 2019 +0100
@@ -12,23 +12,19 @@
 
 __docformat__ = 'restructuredtext'
 
-
-# import standard library
 from heapq import merge
-from random import shuffle
 from itertools import chain, zip_longest
+from random import shuffle
 
-# import interfaces
-from pyams_content.shared.view.interfaces import VIEWS_MERGERS_VOCABULARY, IViewsMerger, CREATION_DATE_ORDER, \
-    UPDATE_DATE_ORDER, PUBLICATION_DATE_ORDER, FIRSTPUBLICATION_DATE_ORDER
-from pyams_workflow.interfaces import IWorkflowPublicationInfo
+from zope.componentvocabulary.vocabulary import UtilityTerm, UtilityVocabulary
 from zope.dublincore.interfaces import IZopeDublinCore
 
-# import packages
+from pyams_content.shared.view.interfaces import CREATION_DATE_ORDER, FIRSTPUBLICATION_DATE_ORDER, IViewsMerger, \
+    PUBLICATION_DATE_ORDER, UPDATE_DATE_ORDER, VIEWS_MERGERS_VOCABULARY
 from pyams_utils.registry import utility_config
 from pyams_utils.request import check_request
 from pyams_utils.vocabulary import vocabulary_config
-from zope.componentvocabulary.vocabulary import UtilityVocabulary, UtilityTerm
+from pyams_workflow.interfaces import IWorkflowPublicationInfo
 
 from pyams_content import _