diff --git a/mayan/apps/authentication/links.py b/mayan/apps/authentication/links.py
index 45c67515c2..1d2ad72911 100644
--- a/mayan/apps/authentication/links.py
+++ b/mayan/apps/authentication/links.py
@@ -9,8 +9,9 @@ from .icons import icon_logout, icon_password_change
 
 def has_usable_password_and_can_change_password(context):
     return (
-        context['request'].user.has_usable_password and
-        not context['request'].user.user_options.block_password_change
+        context['request'].user.has_usable_password and not context[
+            'request'
+        ].user.user_options.block_password_change
     )
 
 
diff --git a/mayan/apps/documents/api_views.py b/mayan/apps/documents/api_views.py
index 6a77a358b0..0a455d6417 100644
--- a/mayan/apps/documents/api_views.py
+++ b/mayan/apps/documents/api_views.py
@@ -6,7 +6,6 @@ from furl import furl
 
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404
-from django.utils.encoding import force_bytes
 from django.views.decorators.cache import cache_control, patch_cache_control
 
 from django_downloadview import DownloadMixin, VirtualFile
diff --git a/mayan/apps/documents/models.py b/mayan/apps/documents/models.py
index f21f464b70..7a9a849d41 100644
--- a/mayan/apps/documents/models.py
+++ b/mayan/apps/documents/models.py
@@ -886,7 +886,7 @@ class DocumentPage(models.Model):
 
             final_url.args['transformation_{}_name'.format(count)] = name
             final_url.args['transformation_{}_kwargs'.format(count)] = kwargs
-            count = count +1
+            count = count + 1
 
         return final_url.tostr()
 
diff --git a/mayan/apps/mailer/forms.py b/mayan/apps/mailer/forms.py
index a1649a6b1e..eadedf15d6 100644
--- a/mayan/apps/mailer/forms.py
+++ b/mayan/apps/mailer/forms.py
@@ -9,8 +9,6 @@ from acls.models import AccessControlList
 from common.forms import DynamicModelForm
 from common.settings import setting_project_title, setting_project_url
 
-import mayan
-
 from .classes import MailerBackend
 from .models import UserMailer
 from .permissions import permission_user_mailer_use
diff --git a/mayan/apps/metadata/tests/test_views.py b/mayan/apps/metadata/tests/test_views.py
index edff891e06..033aa0f9cc 100644
--- a/mayan/apps/metadata/tests/test_views.py
+++ b/mayan/apps/metadata/tests/test_views.py
@@ -328,8 +328,7 @@ class DocumentMetadataTestCase(GenericDocumentViewTestCase):
             'metadata_type', flat=True
         )
         self.assertTrue(
-            self.metadata_type.pk in document_metadata_types and
-            metadata_type_2.pk in document_metadata_types
+            self.metadata_type.pk in document_metadata_types and metadata_type_2.pk in document_metadata_types
         )
 
 
diff --git a/mayan/settings/literals.py b/mayan/settings/literals.py
index 820a4c8169..7cd0108d68 100644
--- a/mayan/settings/literals.py
+++ b/mayan/settings/literals.py
@@ -2,31 +2,13 @@ from __future__ import unicode_literals
 
 DJANGO_SETTINGS_LIST = (
     'ALLOWED_HOSTS', 'APPEND_SLASH', 'AUTH_PASSWORD_VALIDATORS',
-    'DATA_UPLOAD_MAX_MEMORY_SIZE',
-    'DATABASES',
-    'DEBUG',
-    'DEFAULT_FROM_EMAIL',
-    'DISALLOWED_USER_AGENTS',
-    'EMAIL_BACKEND',
-    'EMAIL_HOST',
-    'EMAIL_HOST_PASSWORD',
-    'EMAIL_HOST_USER',
-    'EMAIL_PORT',
-    'EMAIL_TIMEOUT',
-    'EMAIL_USE_SSL',
-    'EMAIL_USE_TLS',
-    'FILE_UPLOAD_MAX_MEMORY_SIZE',
-    'HOME_VIEW',
-    'INSTALLED_APPS',
-    'INTERNAL_IPS',
-    'LANGUAGES',
-    'LANGUAGE_CODE',
-    'LOGIN_REDIRECT_URL',
-    'LOGIN_URL',
-    'STATIC_URL',
-    'STATICFILES_STORAGE',
-    'TIME_ZONE',
-    'WSGI_APPLICATION',
+    'DATA_UPLOAD_MAX_MEMORY_SIZE', 'DATABASES', 'DEBUG', 'DEFAULT_FROM_EMAIL',
+    'DISALLOWED_USER_AGENTS', 'EMAIL_BACKEND', 'EMAIL_HOST',
+    'EMAIL_HOST_PASSWORD', 'EMAIL_HOST_USER', 'EMAIL_PORT', 'EMAIL_TIMEOUT',
+    'EMAIL_USE_SSL', 'EMAIL_USE_TLS', 'FILE_UPLOAD_MAX_MEMORY_SIZE',
+    'HOME_VIEW', 'INSTALLED_APPS', 'INTERNAL_IPS', 'LANGUAGES',
+    'LANGUAGE_CODE', 'LOGIN_REDIRECT_URL', 'LOGIN_URL', 'STATIC_URL',
+    'STATICFILES_STORAGE', 'TIME_ZONE', 'WSGI_APPLICATION',
 )
 
 DEFAULT_SECRET_KEY = 'secret-key-missing!'