diff --git a/promgen/migrations/0023_shard_authorization.py b/promgen/migrations/0023_shard_authorization.py
index 7087383ca..aa04753cf 100644
--- a/promgen/migrations/0023_shard_authorization.py
+++ b/promgen/migrations/0023_shard_authorization.py
@@ -1,6 +1,5 @@
 # Generated by Django 4.2.11 on 2024-06-28 09:57
 
-import django.core.validators
 from django.db import migrations, models
 
 
diff --git a/promgen/urls.py b/promgen/urls.py
index f1c1f6dd0..3f1ebc0ee 100644
--- a/promgen/urls.py
+++ b/promgen/urls.py
@@ -16,7 +16,6 @@
     1. Import the include() function: from django.conf.urls import url, include
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
-from django.urls import path
 from django.contrib import admin
 from django.urls import include, path
 from django.views.decorators.csrf import csrf_exempt
diff --git a/promgen/util.py b/promgen/util.py
index 7e754f05e..135e9ed73 100644
--- a/promgen/util.py
+++ b/promgen/util.py
@@ -79,7 +79,7 @@ def setting(key, default=None, domain=None):
         try:
             rtn = rtn[index]
         except KeyError:
-            if default != KeyError:
+            if default is not KeyError:
                 return default
             raise KeyError(f"Missing required setting: {key}")
     return rtn
@@ -121,6 +121,7 @@ def wrapped(field):
 
     return wrapped
 
+
 def proxy_error(response: requests.Response) -> HttpResponse:
     """
     Return a wrapped proxy error
diff --git a/promgen/views.py b/promgen/views.py
index f92262587..33a24eec5 100644
--- a/promgen/views.py
+++ b/promgen/views.py
@@ -11,8 +11,6 @@
 from itertools import chain
 
 import prometheus_client
-from prometheus_client.parser import text_string_to_metric_families
-
 import requests
 from django.conf import settings
 from django.contrib import messages
@@ -30,6 +28,7 @@
 from django.views.generic.detail import SingleObjectMixin
 from django.views.generic.edit import CreateView, DeleteView, FormView
 from prometheus_client.core import CounterMetricFamily, GaugeMetricFamily
+from prometheus_client.parser import text_string_to_metric_families
 from requests.exceptions import HTTPError
 
 import promgen.templatetags.promgen as macro
@@ -309,8 +308,8 @@ def post(self, request, pk):
                 request,
                 "Removed filter {} {}".format(
                     self.escape_square_brackets(f.name),
-                    self.escape_square_brackets(f.value)
-                )
+                    self.escape_square_brackets(f.value),
+                ),
             )
         if "filter.name" in request.POST:
             obj = self.get_object()
@@ -322,16 +321,16 @@ def post(self, request, pk):
                     request,
                     "Created filter {} {}".format(
                         self.escape_square_brackets(f.name),
-                        self.escape_square_brackets(f.value)
-                    )
+                        self.escape_square_brackets(f.value),
+                    ),
                 )
             else:
                 messages.warning(
                     request,
                     "Updated filter {} {}".format(
                         self.escape_square_brackets(f.name),
-                        self.escape_square_brackets(f.value)
-                    )
+                        self.escape_square_brackets(f.value),
+                    ),
                 )
         if "next" in request.POST:
             return redirect(request.POST["next"])