diff --git a/mayan/apps/document_indexing/apps.py b/mayan/apps/document_indexing/apps.py
index 7796b732a1..6633c11ee0 100644
--- a/mayan/apps/document_indexing/apps.py
+++ b/mayan/apps/document_indexing/apps.py
@@ -15,7 +15,6 @@ from common import (
     menu_setup, menu_tools
 )
 from common.classes import Package
-from common.signals import post_initial_setup
 from common.widgets import two_state_template
 from documents.signals import post_document_created, post_initial_document_type
 from mayan.celery import app
diff --git a/mayan/apps/document_indexing/handlers.py b/mayan/apps/document_indexing/handlers.py
index ecf1604892..175fbfcd39 100644
--- a/mayan/apps/document_indexing/handlers.py
+++ b/mayan/apps/document_indexing/handlers.py
@@ -3,8 +3,6 @@ from __future__ import unicode_literals
 from django.apps import apps
 from django.utils.translation import ugettext_lazy as _
 
-from documents.literals import DEFAULT_DOCUMENT_TYPE_LABEL
-
 from .tasks import task_delete_empty_index_nodes, task_index_document
 
 
diff --git a/mayan/apps/documents/handlers.py b/mayan/apps/documents/handlers.py
index 0182ee86eb..d4c82f861b 100644
--- a/mayan/apps/documents/handlers.py
+++ b/mayan/apps/documents/handlers.py
@@ -1,7 +1,6 @@
 from __future__ import unicode_literals
 
 from django.apps import apps
-from django.utils.translation import ugettext_lazy as _
 
 from .literals import DEFAULT_DOCUMENT_TYPE_LABEL
 from .signals import post_initial_document_type
diff --git a/mayan/apps/metadata/serializers.py b/mayan/apps/metadata/serializers.py
index 3dfa602d01..828a7792d5 100644
--- a/mayan/apps/metadata/serializers.py
+++ b/mayan/apps/metadata/serializers.py
@@ -55,6 +55,7 @@ class DocumentNewMetadataSerializer(serializers.Serializer):
         )
         return instance
 
+
 class DocumentTypeNewMetadataTypeSerializer(serializers.Serializer):
     metadata_type_pk = serializers.IntegerField(
         help_text=_('Primary key of the metadata type to be added.')
diff --git a/mayan/apps/mirroring/management/commands/mountindex.py b/mayan/apps/mirroring/management/commands/mountindex.py
index b416a11154..7244716dae 100644
--- a/mayan/apps/mirroring/management/commands/mountindex.py
+++ b/mayan/apps/mirroring/management/commands/mountindex.py
@@ -213,13 +213,9 @@ class Command(management.BaseCommand):
     help = 'Mount an index as a FUSE filesystem.'
 
     def add_arguments(self, parser):
-        parser.add_argument('slug', nargs='?',
-            help='Index slug'
-        )
+        parser.add_argument('slug', nargs='?', help='Index slug')
 
-        parser.add_argument('mount_point', nargs='?',
-            help='Mount point'
-        )
+        parser.add_argument('mount_point', nargs='?', help='Mount point')
 
     def handle(self, *args, **options):
         if not options.get('slug') or not options.get('mount_point'):
diff --git a/mayan/apps/ocr/backends/tesseract.py b/mayan/apps/ocr/backends/tesseract.py
index b157787928..cf27a3eea9 100644
--- a/mayan/apps/ocr/backends/tesseract.py
+++ b/mayan/apps/ocr/backends/tesseract.py
@@ -57,7 +57,3 @@ class Tesseract(OCRBackendBase):
             raise OCRError(error_message)
 
         return result
-
-
-
-
diff --git a/mayan/apps/user_management/serializers.py b/mayan/apps/user_management/serializers.py
index dbe030719f..2430629d35 100644
--- a/mayan/apps/user_management/serializers.py
+++ b/mayan/apps/user_management/serializers.py
@@ -40,14 +40,14 @@ class UserSerializer(serializers.HyperlinkedModelSerializer):
         write_only_fields = ('password',)
 
     def create(self, validated_data):
-        groups = validated_data.pop('groups')
-        is_active = validated_data.pop('is_active')
+        validated_data.pop('groups')
+        validated_data.pop('is_active')
         user = get_user_model().objects.create_user(**validated_data)
 
         return user
 
     def update(self, instance, validated_data):
-        groups = validated_data.pop('groups')
+        validated_data.pop('groups')
 
         if 'password' in validated_data:
             instance.set_password(validated_data['password'])
diff --git a/mayan/apps/user_management/tests/test_api.py b/mayan/apps/user_management/tests/test_api.py
index 1864960744..e5eb2b561c 100644
--- a/mayan/apps/user_management/tests/test_api.py
+++ b/mayan/apps/user_management/tests/test_api.py
@@ -4,7 +4,6 @@ from django.contrib.auth import get_user_model
 
 from django.core.urlresolvers import reverse
 
-from rest_framework import status
 from rest_framework.test import APITestCase
 
 from ..tests.literals import (
@@ -12,8 +11,8 @@ from ..tests.literals import (
 )
 
 from .literals import (
-    TEST_GROUP, TEST_USER_EMAIL, TEST_USER_PASSWORD, TEST_USER_PASSWORD_EDITED,
-    TEST_USER_USERNAME, TEST_USER_USERNAME_EDITED
+    TEST_USER_EMAIL, TEST_USER_PASSWORD, TEST_USER_USERNAME,
+    TEST_USER_USERNAME_EDITED
 )