PEP8 cleanups

mayan/apps/document_comments/__init__.py

@@ -1,6 +1,5 @@
 from __future__ import absolute_import
 
-from django.conf import settings
 from django.contrib.comments.models import Comment
 from django.contrib.contenttypes import generic
 from django.utils.translation import ugettext_lazy as _
@@ -10,14 +9,23 @@ from common.utils import encapsulate
 from documents.models import Document
 from navigation.api import register_links, register_model_list_columns
 
-from .links import (comment_delete, comment_add,
-    comments_for_document)
+from .links import comment_add, comment_delete, comments_for_document
 from .permissions import (PERMISSION_COMMENT_CREATE,
-    PERMISSION_COMMENT_DELETE, PERMISSION_COMMENT_VIEW)
+                          PERMISSION_COMMENT_DELETE, PERMISSION_COMMENT_VIEW)
 
-if 'django.contrib.comments' not in settings.INSTALLED_APPS:
-    raise Exception('This app depends on the django.contrib.comments app.')
 
+Document.add_to_class(
+    'comments',
+    generic.GenericRelation(
+        Comment,
+        content_type_field='content_type',
+        object_id_field='object_pk'
+    )
+)
+
+class_permissions(Document, [PERMISSION_COMMENT_CREATE,
+                             PERMISSION_COMMENT_DELETE,
+                             PERMISSION_COMMENT_VIEW])
 
 register_model_list_columns(Comment, [
     {
@@ -37,18 +45,3 @@ register_model_list_columns(Comment, [
 register_links(['comments:comments_for_document', 'comments:comment_add', 'comments:comment_delete', 'comments:comment_multiple_delete'], [comment_add], menu_name='sidebar')
 register_links(Comment, [comment_delete])
 register_links(Document, [comments_for_document], menu_name='form_header')
-
-Document.add_to_class(
-    'comments',
-    generic.GenericRelation(
-        Comment,
-        content_type_field='content_type',
-        object_id_field='object_pk'
-    )
-)
-
-class_permissions(Document, [
-    PERMISSION_COMMENT_CREATE,
-    PERMISSION_COMMENT_DELETE,
-    PERMISSION_COMMENT_VIEW
-])