diff --git a/constance/admin.py b/constance/admin.py
index 78a6af6..5a712bb 100644
--- a/constance/admin.py
+++ b/constance/admin.py
@@ -22,7 +22,10 @@ from constance import config, settings
 NUMERIC_WIDGET = forms.TextInput(attrs={'size': 10})
 
 INTEGER_LIKE = (fields.IntegerField, {'widget': NUMERIC_WIDGET})
-STRING_LIKE = (fields.CharField, {'widget': forms.Textarea(attrs={'rows': 3}), 'required': False})
+STRING_LIKE = (fields.CharField, {
+    'widget': forms.Textarea(attrs={'rows': 3}),
+    'required': False,
+})
 
 FIELDS = {
     bool: (fields.BooleanField, {'required': False}),
@@ -109,10 +112,11 @@ class ConstanceAdmin(admin.ModelAdmin):
                 'help_text': _(help_text),
                 'value': localize(value),
                 'modified': value != default,
-                'form_field': form[name]
+                'form_field': form[name],
             })
         context['config'].sort(key=itemgetter('name'))
-        context_instance = RequestContext(request, current_app=self.admin_site.name)
+        context_instance = RequestContext(request,
+                                          current_app=self.admin_site.name)
         return render_to_response('admin/constance/change_list.html',
             context, context_instance=context_instance)
 
@@ -125,8 +129,7 @@ class ConstanceAdmin(admin.ModelAdmin):
     def has_change_permission(self, request, obj=None):
         if settings.SUPERUSER_ONLY:
             return request.user.is_superuser
-        else:
-            return super(ConstanceAdmin, self).has_change_permission(request, obj)
+        return super(ConstanceAdmin, self).has_change_permission(request, obj)
 
 
 class Config(object):
diff --git a/constance/backends/__init__.py b/constance/backends/__init__.py
index a7f9f40..a64905e 100644
--- a/constance/backends/__init__.py
+++ b/constance/backends/__init__.py
@@ -2,6 +2,7 @@
 Defines the base constance backend
 """
 
+
 class Backend(object):
 
     def get(self, key):
diff --git a/constance/backends/database/__init__.py b/constance/backends/database/__init__.py
index 77bd284..3a447cb 100644
--- a/constance/backends/database/__init__.py
+++ b/constance/backends/database/__init__.py
@@ -1,5 +1,3 @@
-import itertools
-
 from django.core.exceptions import ImproperlyConfigured
 from django.db.models.signals import post_save
 from django.core.cache import get_cache
diff --git a/constance/backends/database/migrations/0001_initial.py b/constance/backends/database/migrations/0001_initial.py
index f8747dd..f9b7473 100644
--- a/constance/backends/database/migrations/0001_initial.py
+++ b/constance/backends/database/migrations/0001_initial.py
@@ -8,7 +8,8 @@ class Migration(SchemaMigration):
     def forwards(self, orm):
         # Adding model 'Constance'
         db.create_table('constance_config', (
-            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('id', self.gf('django.db.models.fields.AutoField')(
+                primary_key=True)),
             ('key', self.gf('django.db.models.fields.TextField')()),
             ('value', self.gf('picklefield.fields.PickledObjectField')()),
         ))
@@ -20,8 +21,10 @@ class Migration(SchemaMigration):
 
     models = {
         'database.constance': {
-            'Meta': {'object_name': 'Constance', 'db_table': "'constance_config'"},
-            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'Meta': {'object_name': 'Constance',
+                     'db_table': "'constance_config'"},
+            'id': ('django.db.models.fields.AutoField', [],
+                   {'primary_key': 'True'}),
             'key': ('django.db.models.fields.TextField', [], {}),
             'value': ('picklefield.fields.PickledObjectField', [], {})
         }
diff --git a/constance/backends/database/migrations/0002_auto__chg_field_constance_key__add_unique_constance_key.py b/constance/backends/database/migrations/0002_auto__chg_field_constance_key__add_unique_constance_key.py
index b06a6ac..691c820 100644
--- a/constance/backends/database/migrations/0002_auto__chg_field_constance_key__add_unique_constance_key.py
+++ b/constance/backends/database/migrations/0002_auto__chg_field_constance_key__add_unique_constance_key.py
@@ -7,7 +7,9 @@ class Migration(SchemaMigration):
 
     def forwards(self, orm):
         # Changing field 'Constance.key'
-        db.alter_column('constance_config', 'key', self.gf('django.db.models.fields.CharField')(unique=True, max_length=255))
+        db.alter_column('constance_config', 'key',
+                        self.gf('django.db.models.fields.CharField')(
+                            unique=True, max_length=255))
         # Adding unique constraint on 'Constance', fields ['key']
         db.create_unique('constance_config', ['key'])
 
@@ -16,13 +18,17 @@ class Migration(SchemaMigration):
         db.delete_unique('constance_config', ['key'])
 
         # Changing field 'Constance.key'
-        db.alter_column('constance_config', 'key', self.gf('django.db.models.fields.TextField')())
+        db.alter_column('constance_config', 'key',
+                        self.gf('django.db.models.fields.TextField')())
 
     models = {
         'database.constance': {
-            'Meta': {'object_name': 'Constance', 'db_table': "'constance_config'"},
-            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
-            'key': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'Meta': {'object_name': 'Constance',
+                     'db_table': "'constance_config'"},
+            'id': ('django.db.models.fields.AutoField', [],
+                   {'primary_key': 'True'}),
+            'key': ('django.db.models.fields.CharField', [],
+                    {'unique': 'True', 'max_length': '255'}),
             'value': ('picklefield.fields.PickledObjectField', [], {})
         }
     }
diff --git a/constance/config.py b/constance/config.py
index ed2afbc..d7ef1a6 100644
--- a/constance/config.py
+++ b/constance/config.py
@@ -1,5 +1,6 @@
 from constance import settings, utils
 
+
 class Config(object):
     """
     The global config wrapper that handles the backend.
diff --git a/constance/context_processors.py b/constance/context_processors.py
index fa7be62..3a3da33 100644
--- a/constance/context_processors.py
+++ b/constance/context_processors.py
@@ -1,5 +1,6 @@
 import constance
 
+
 def config(request):
     """
     Simple context processor that puts the config into every
diff --git a/constance/models.py b/constance/models.py
index 6052640..e341795 100644
--- a/constance/models.py
+++ b/constance/models.py
@@ -1,4 +1,4 @@
-from django.db.models import get_models, signals
+from django.db.models import signals
 
 
 def create_perm(app, created_models, verbosity, db, **kwargs):
diff --git a/constance/settings.py b/constance/settings.py
index 75ce98a..a53ac4a 100644
--- a/constance/settings.py
+++ b/constance/settings.py
@@ -8,7 +8,8 @@ settings = import_module_attr(
 REDIS_PREFIX = getattr(settings, 'CONSTANCE_REDIS_PREFIX',
                getattr(settings, 'CONSTANCE_PREFIX', 'constance:'))
 
-BACKEND = getattr(settings, 'CONSTANCE_BACKEND', 'constance.backends.redisd.RedisBackend')
+BACKEND = getattr(settings, 'CONSTANCE_BACKEND',
+                  'constance.backends.redisd.RedisBackend')
 
 CONFIG = getattr(settings, 'CONSTANCE_CONFIG', {})
 
diff --git a/constance/utils.py b/constance/utils.py
index f6dc970..96fc572 100644
--- a/constance/utils.py
+++ b/constance/utils.py
@@ -1,5 +1,6 @@
 from django.utils.importlib import import_module
 
+
 def import_module_attr(path):
     package, module = path.rsplit('.', 1)
     return getattr(import_module(package), module)