Fixing python-modernize issues.

openedx/core/djangoapps/theming/finders.py

@@ -17,6 +17,8 @@ interface, as well.
 .. _Django-Pipeline: https://django-pipeline.readthedocs.org/
 .. _Django-Require: https://github.com/etianen/django-require
 """
+from __future__ import absolute_import
+
 import os
 from collections import OrderedDict
 

openedx/core/djangoapps/theming/helpers.py

@@ -4,6 +4,8 @@ Helpers for accessing comprehensive theming related variables.
 This file is imported at startup. Imports of models or things which import models will break startup on Django 1.9+. If
 you need models here, please import them inside the function which uses them.
 """
+from __future__ import absolute_import
+
 import os
 import re
 from logging import getLogger

openedx/core/djangoapps/theming/views.py

@@ -2,6 +2,8 @@
 Views file for theming administration.
 """
 
+from __future__ import absolute_import
+
 from django.conf import settings
 from django.contrib.auth.decorators import login_required
 from django.http import Http404
@@ -9,15 +11,16 @@ from django.shortcuts import redirect
 from django.template.loader import render_to_string
 from django.utils.decorators import method_decorator
 from django.utils.translation import ugettext as _
+from web_fragments.fragment import Fragment
+
 from openedx.core.djangoapps.plugin_api.views import EdxFragmentView
 from openedx.core.djangoapps.user_api.preferences.api import (
     delete_user_preference,
     get_user_preference,
-    set_user_preference,
+    set_user_preference
 )
 from openedx.core.djangoapps.util.user_messages import PageLevelMessages
 from student.roles import GlobalStaff
-from web_fragments.fragment import Fragment
 
 from .helpers import theme_exists
 from .models import SiteTheme