diff --git a/src/pretix/base/management/commands/runserver.py b/src/pretix/base/management/commands/runserver.py
index feee6ddd3..7079daf6e 100644
--- a/src/pretix/base/management/commands/runserver.py
+++ b/src/pretix/base/management/commands/runserver.py
@@ -6,13 +6,15 @@
 It runs the local frontend server, if node is installed and the setting
 is set.
 """
-import os
 import atexit
+import os
 import subprocess
 from pathlib import Path
 
 from django.conf import settings
-from django.contrib.staticfiles.management.commands.runserver import Command as Parent
+from django.contrib.staticfiles.management.commands.runserver import (
+    Command as Parent,
+)
 from django.utils.autoreload import DJANGO_AUTORELOAD_ENV
 
 
@@ -32,7 +34,7 @@ class Command(Parent):
                     vite_server.wait(timeout=5)
                 except subprocess.TimeoutExpired:
                     vite_server.kill()
-            
+
             atexit.register(cleanup)
 
         super().handle(*args, **options)
diff --git a/src/pretix/base/middleware.py b/src/pretix/base/middleware.py
index 0ee7174cb..49b6f3faf 100644
--- a/src/pretix/base/middleware.py
+++ b/src/pretix/base/middleware.py
@@ -283,7 +283,7 @@ class SecurityMiddleware(MiddlewareMixin):
             'script-src': ["{static}"] + (["http://localhost:5173", "ws://localhost:5173"] if settings.VITE_DEV_MODE else []),
             'object-src': ["'none'"],
             'frame-src': ['{static}'],
-            'style-src': ["{static}", "{media}"]+ (["unsafe-inline"] if settings.VITE_DEV_MODE else []),
+            'style-src': ["{static}", "{media}"] + (["unsafe-inline"] if settings.VITE_DEV_MODE else []),
             'connect-src': ["{dynamic}", "{media}"] + (["http://localhost:5173", "ws://localhost:5173"] if settings.VITE_DEV_MODE else []),
             'img-src': ["{static}", "{media}", "data:"] + img_src,
             'font-src': ["{static}"] + list(font_src),
diff --git a/src/tests/e2e/conftest.py b/src/tests/e2e/conftest.py
index c93318ec7..4606c98b1 100644
--- a/src/tests/e2e/conftest.py
+++ b/src/tests/e2e/conftest.py
@@ -9,16 +9,19 @@ using Playwright. It integrates Playwright with Django's test infrastructure.
 
 import os
 import subprocess
-import pytest
+from datetime import date, datetime, timedelta, timezone
 from decimal import Decimal
-from datetime import date, datetime, timezone, timedelta
-from urllib.request import urlopen
 from urllib.error import URLError
-from playwright.sync_api import Browser, BrowserContext, Page, expect
+from urllib.request import urlopen
+
+import pytest
 from django_scopes import scopes_disabled
+from playwright.sync_api import (  # noqa: F401
+    Browser, BrowserContext, Page, expect,
+)
 
 from pretix.base.models import (
-    Organizer, Event, Item, Quota, ItemVariation, SubEvent, Voucher
+    Event, Item, ItemVariation, Organizer, Quota, SubEvent, Voucher,
 )
 
 # Allow Django ORM operations in async context (required for Playwright integration)
@@ -137,6 +140,7 @@ def live_server_url(live_server, settings):
 
     return live_server.url
 
+
 # ============================================================================
 # Test Data Fixtures - Organizers and Events
 # ============================================================================
@@ -740,9 +744,9 @@ def event_series(organizer):
     for i in range(15):
         se = SubEvent.objects.create(
             event=event,
-            name=f'Concert Night {i+1}',
-            date_from=base_date + timedelta(days=i*2),
-            date_to=base_date + timedelta(days=i*2, hours=2),
+            name=f'Concert Night {i + 1}',
+            date_from=base_date + timedelta(days=i * 2),
+            date_to=base_date + timedelta(days=i * 2, hours=2),
             active=True,
         )
         subevents.append(se)
@@ -750,7 +754,7 @@ def event_series(organizer):
         # Each subevent needs its own quota
         quota = Quota.objects.create(
             event=event,
-            name=f'Concert {i+1} Quota',
+            name=f'Concert {i + 1} Quota',
             size=100,
             subevent=se,
         )
@@ -1035,11 +1039,13 @@ def item_not_yet_available(event):
 @scopes_disabled()
 def item_with_picture(event):
     """Create an item with a product picture."""
-    from pretix.base.models import ItemCategory
-    from django.core.files.uploadedfile import SimpleUploadedFile
     import io
+
+    from django.core.files.uploadedfile import SimpleUploadedFile
     from PIL import Image as PILImage
 
+    from pretix.base.models import ItemCategory
+
     category = ItemCategory.objects.create(
         event=event,
         name='Gallery Items',
@@ -1113,8 +1119,9 @@ def _register_widget_test_view():
     set_content, which causes CORS issues.
     """
     from django.http import HttpResponse
-    from django.views import View
     from django.urls import path
+    from django.views import View
+
     from pretix.multidomain import maindomain_urlconf as urls
 
     class WidgetTestView(View):