diff --git a/jdav_web/contrib/admin.py b/jdav_web/contrib/admin.py
index 96a3838..b7e6ca1 100644
--- a/jdav_web/contrib/admin.py
+++ b/jdav_web/contrib/admin.py
@@ -1,14 +1,12 @@
 import copy
-from django.contrib.auth import get_permission_codename
 
+from django.contrib import messages
+from django.contrib.auth import get_permission_codename
 from django.core.exceptions import PermissionDenied
-from django.contrib import admin, messages
-from django.utils.translation import gettext_lazy as _
-from django.http import HttpResponse, HttpResponseRedirect
-from django.urls import path, reverse
 from django.db import models
-from django.contrib.admin import helpers, widgets
-import rules.contrib.admin
+from django.http import HttpResponseRedirect
+from django.urls import reverse
+from django.utils.translation import gettext_lazy as _
 from rules.permissions import perm_exists
 
 
@@ -16,19 +14,36 @@ def decorate_admin_view(model, perm=None):
     """
     Decorator for wrapping admin views.
     """
+
     def decorator(fun):
         def aux(self, request, object_id):
             try:
                 obj = model.objects.get(pk=object_id)
             except model.DoesNotExist:
-                messages.error(request, _('%(modelname)s not found.') % {'modelname': self.opts.verbose_name})
-                return HttpResponseRedirect(reverse('admin:%s_%s_changelist' % (self.opts.app_label, self.opts.model_name)))
-            permitted = self.has_change_permission(request, obj) if not perm else request.user.has_perm(perm)
+                messages.error(
+                    request, _("%(modelname)s not found.") % {"modelname": self.opts.verbose_name}
+                )
+                return HttpResponseRedirect(
+                    reverse(
+                        "admin:{}_{}_changelist".format(self.opts.app_label, self.opts.model_name)
+                    )
+                )
+            permitted = (
+                self.has_change_permission(request, obj)
+                if not perm
+                else request.user.has_perm(perm)
+            )
             if not permitted:
-                messages.error(request, _('Insufficient permissions.'))
-                return HttpResponseRedirect(reverse('admin:%s_%s_changelist' % (self.opts.app_label, self.opts.model_name)))
+                messages.error(request, _("Insufficient permissions."))
+                return HttpResponseRedirect(
+                    reverse(
+                        "admin:{}_{}_changelist".format(self.opts.app_label, self.opts.model_name)
+                    )
+                )
             return fun(self, request, obj)
+
         return aux
+
     return decorator
 
 
@@ -37,7 +52,7 @@ class FieldPermissionsAdminMixin:
     field_view_permissions = {}
 
     def may_view_field(self, field_desc, request, obj=None):
-        if not type(field_desc) is tuple:
+        if type(field_desc) is not tuple:
             field_desc = (field_desc,)
         for fd in field_desc:
             if fd not in self.field_view_permissions:
@@ -47,37 +62,41 @@ class FieldPermissionsAdminMixin:
         return True
 
     def get_fieldsets(self, request, obj=None):
-        fieldsets = super(FieldPermissionsAdminMixin, self).get_fieldsets(request, obj)
+        fieldsets = super().get_fieldsets(request, obj)
         d = []
         for title, attrs in fieldsets:
-            allowed = [f for f in attrs['fields'] if self.may_view_field(f, request, obj)]
+            allowed = [f for f in attrs["fields"] if self.may_view_field(f, request, obj)]
             if len(allowed) == 0:
                 continue
-            d.append((title, dict(attrs, **{'fields': allowed})))
+            d.append((title, dict(attrs, **{"fields": allowed})))
         return d
 
     def get_fields(self, request, obj=None):
-        fields = super(FieldPermissionsAdminMixin, self).get_fields(request, obj)
+        fields = super().get_fields(request, obj)
         return [fd for fd in fields if self.may_view_field(fd, request, obj)]
 
     def get_readonly_fields(self, request, obj=None):
-        readonly_fields = super(FieldPermissionsAdminMixin, self).get_readonly_fields(request, obj)
-        return list(readonly_fields) +\
-            [fd for fd, perm in self.field_change_permissions.items() if not request.user.has_perm(perm)]
+        readonly_fields = super().get_readonly_fields(request, obj)
+        return list(readonly_fields) + [
+            fd
+            for fd, perm in self.field_change_permissions.items()
+            if not request.user.has_perm(perm)
+        ]
 
 
 class ChangeViewAdminMixin:
     def change_view(self, request, object_id, form_url="", extra_context=None):
         try:
-            return super(ChangeViewAdminMixin, self).change_view(request, object_id,
-                                                                 form_url=form_url,
-                                                                 extra_context=extra_context)
+            return super().change_view(
+                request, object_id, form_url=form_url, extra_context=extra_context
+            )
         except PermissionDenied:
             opts = self.opts
             obj = self.model.objects.get(pk=object_id)
-            messages.error(request,
-                    _("You are not allowed to view %(name)s.") % {'name': str(obj)})
-            return HttpResponseRedirect(reverse('admin:%s_%s_changelist' % (opts.app_label, opts.model_name)))
+            messages.error(request, _("You are not allowed to view %(name)s.") % {"name": str(obj)})
+            return HttpResponseRedirect(
+                reverse("admin:{}_{}_changelist".format(opts.app_label, opts.model_name))
+            )
 
 
 class FilteredQuerysetAdminMixin:
@@ -91,28 +110,34 @@ class FilteredQuerysetAdminMixin:
         if ordering:
             qs = qs.order_by(*ordering)
         queryset = qs
-        list_global_perm = '%s.list_global_%s' % (self.opts.app_label, self.opts.model_name)
+        list_global_perm = "{}.list_global_{}".format(self.opts.app_label, self.opts.model_name)
         if request.user.has_perm(list_global_perm):
-            view_global_perm = '%s.view_global_%s' % (self.opts.app_label, self.opts.model_name)
+            view_global_perm = "{}.view_global_{}".format(self.opts.app_label, self.opts.model_name)
             if request.user.has_perm(view_global_perm):
-               return queryset
-            if hasattr(request.user, 'member'):
+                return queryset
+            if hasattr(request.user, "member"):
                 return request.user.member.annotate_view_permission(queryset, model=self.model)
             return queryset.annotate(_viewable=models.Value(False))
 
-        if not hasattr(request.user, 'member'):
+        if not hasattr(request.user, "member"):
             return self.model.objects.none()
 
-        return request.user.member.filter_queryset_by_permissions(queryset, annotate=True, model=self.model)
+        return request.user.member.filter_queryset_by_permissions(
+            queryset, annotate=True, model=self.model
+        )
+
+
+# class ObjectPermissionsInlineModelAdminMixin(rules.contrib.admin.ObjectPermissionsInlineModelAdminMixin):
 
-#class ObjectPermissionsInlineModelAdminMixin(rules.contrib.admin.ObjectPermissionsInlineModelAdminMixin):
 
-class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, FilteredQuerysetAdminMixin):
+class CommonAdminMixin(
+    FieldPermissionsAdminMixin, ChangeViewAdminMixin, FilteredQuerysetAdminMixin
+):
     def has_add_permission(self, request, obj=None):
         assert obj is None
         opts = self.opts
         codename = get_permission_codename("add_global", opts)
-        perm = "%s.%s" % (opts.app_label, codename)
+        perm = "{}.{}".format(opts.app_label, codename)
         return request.user.has_perm(perm, obj)
 
     def has_view_permission(self, request, obj=None):
@@ -121,7 +146,7 @@ class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, Filtere
             codename = get_permission_codename("view", opts)
         else:
             codename = get_permission_codename("view_obj", opts)
-        perm = "%s.%s" % (opts.app_label, codename)
+        perm = "{}.{}".format(opts.app_label, codename)
         if perm_exists(perm):
             return request.user.has_perm(perm, obj)
         else:
@@ -133,7 +158,7 @@ class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, Filtere
             codename = get_permission_codename("view", opts)
         else:
             codename = get_permission_codename("change_obj", opts)
-        return request.user.has_perm("%s.%s" % (opts.app_label, codename), obj)
+        return request.user.has_perm("{}.{}".format(opts.app_label, codename), obj)
 
     def has_delete_permission(self, request, obj=None):
         opts = self.opts
@@ -141,7 +166,7 @@ class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, Filtere
             codename = get_permission_codename("delete_global", opts)
         else:
             codename = get_permission_codename("delete_obj", opts)
-        return request.user.has_perm("%s.%s" % (opts.app_label, codename), obj)
+        return request.user.has_perm("{}.{}".format(opts.app_label, codename), obj)
 
     def formfield_for_dbfield(self, db_field, request, **kwargs):
         """
@@ -176,7 +201,7 @@ class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, Filtere
             # extra HTML -- the "add other" interface -- to the end of the
             # rendered output. formfield can be None if it came from a
             # OneToOneField with parent_link=True or a M2M intermediary.
-            #if formfield and db_field.name not in self.raw_id_fields:
+            # if formfield and db_field.name not in self.raw_id_fields:
             #    formfield.widget = widgets.RelatedFieldWidgetWrapper(
             #        formfield.widget,
             #        db_field.remote_field,
@@ -198,13 +223,13 @@ class CommonAdminMixin(FieldPermissionsAdminMixin, ChangeViewAdminMixin, Filtere
 
 class CommonAdminInlineMixin(CommonAdminMixin):
     def has_add_permission(self, request, obj):
-        #assert obj is not None
+        # assert obj is not None
         if obj is None:
             return True
         if obj.pk is None:
             return True
         codename = get_permission_codename("add_obj", self.opts)
-        return request.user.has_perm('%s.%s' % (self.opts.app_label, codename), obj)
+        return request.user.has_perm("{}.{}".format(self.opts.app_label, codename), obj)
 
     def has_view_permission(self, request, obj=None):  # pragma: no cover
         if obj is None:
@@ -216,7 +241,7 @@ class CommonAdminInlineMixin(CommonAdminMixin):
             codename = get_permission_codename("view", opts)
         else:
             codename = get_permission_codename("view_obj", opts)
-        perm = "%s.%s" % (opts.app_label, codename)
+        perm = "{}.{}".format(opts.app_label, codename)
         if perm_exists(perm):
             return request.user.has_perm(perm, obj)
         else:
@@ -234,7 +259,7 @@ class CommonAdminInlineMixin(CommonAdminMixin):
                     opts = field.rel.to._meta
                     break
         codename = get_permission_codename("change_obj", opts)
-        return request.user.has_perm("%s.%s" % (opts.app_label, codename), obj)
+        return request.user.has_perm("{}.{}".format(opts.app_label, codename), obj)
 
     def has_delete_permission(self, request, obj=None):  # pragma: no cover
         if obj is None:
diff --git a/jdav_web/contrib/apps.py b/jdav_web/contrib/apps.py
index 5e87acc..7b992b7 100644
--- a/jdav_web/contrib/apps.py
+++ b/jdav_web/contrib/apps.py
@@ -2,5 +2,5 @@ from django.apps import AppConfig
 
 
 class ContribConfig(AppConfig):
-    default_auto_field = 'django.db.models.BigAutoField'
-    name = 'contrib'
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "contrib"
diff --git a/jdav_web/contrib/media.py b/jdav_web/contrib/media.py
index 5fd86e6..a9f0152 100644
--- a/jdav_web/contrib/media.py
+++ b/jdav_web/contrib/media.py
@@ -1,9 +1,9 @@
 import os
+from wsgiref.util import FileWrapper
+
+from django import template
 from django.conf import settings
 from django.http import HttpResponse
-from django import template
-from django.template.loader import get_template
-from wsgiref.util import FileWrapper
 
 
 def find_template(template_name):
@@ -27,12 +27,15 @@ def serve_media(filename, content_type):
     """
     Serve the media file with the given `filename` as an HTTP response.
     """
-    with open(media_path(filename), 'rb') as f:
+    with open(media_path(filename), "rb") as f:
         response = HttpResponse(FileWrapper(f))
-        response['Content-Type'] = content_type
+        response["Content-Type"] = content_type
         # download other files than pdf, show pdfs in the browser
-        response['Content-Disposition'] = 'filename='+filename if content_type == 'application/pdf' else 'attachment; filename='+filename
-        
+        response["Content-Disposition"] = (
+            "filename=" + filename
+            if content_type == "application/pdf"
+            else "attachment; filename=" + filename
+        )
 
     return response
 
diff --git a/jdav_web/contrib/models.py b/jdav_web/contrib/models.py
index 58412b0..c8be5ba 100644
--- a/jdav_web/contrib/models.py
+++ b/jdav_web/contrib/models.py
@@ -1,10 +1,17 @@
 from django.db import models
-from rules.contrib.models import RulesModelBase, RulesModelMixin
+from rules.contrib.models import RulesModelBase
+from rules.contrib.models import RulesModelMixin
+
 
 # Create your models here.
 class CommonModel(models.Model, RulesModelMixin, metaclass=RulesModelBase):
     class Meta:
         abstract = True
         default_permissions = (
-            'add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view',
+            "add_global",
+            "change_global",
+            "view_global",
+            "delete_global",
+            "list_global",
+            "view",
         )
diff --git a/jdav_web/contrib/rules.py b/jdav_web/contrib/rules.py
index b47c0f9..a8d690d 100644
--- a/jdav_web/contrib/rules.py
+++ b/jdav_web/contrib/rules.py
@@ -1,12 +1,12 @@
-from django.contrib.auth import get_permission_codename
 import rules.contrib.admin
-import rules
+
 
 def memberize_user(func):
     def inner(user, other):
-        if not hasattr(user, 'member'):
+        if not hasattr(user, "member"):
             return False
         return func(user.member, other)
+
     return inner
 
 
diff --git a/jdav_web/contrib/tests.py b/jdav_web/contrib/tests.py
index 45adca4..85af444 100644
--- a/jdav_web/contrib/tests.py
+++ b/jdav_web/contrib/tests.py
@@ -1,28 +1,38 @@
-from datetime import datetime, timedelta
-from decimal import Decimal
-from django.test import TestCase, RequestFactory
-from django.contrib.auth import get_user_model
+from datetime import timedelta
+from unittest.mock import Mock
+from unittest.mock import patch
+
+from contrib.admin import CommonAdminMixin
+from contrib.models import CommonModel
+from contrib.rules import has_global_perm
 from django.contrib import admin
-from django.db import models
+from django.contrib.auth import get_user_model
 from django.core.exceptions import ValidationError
-from django.core.files.uploadedfile import SimpleUploadedFile
+from django.db import models
+from django.test import RequestFactory
+from django.test import TestCase
 from django.utils.translation import gettext_lazy as _
-from unittest.mock import Mock, patch
-from rules.contrib.models import RulesModelMixin, RulesModelBase
-from contrib.models import CommonModel
-from contrib.rules import has_global_perm
-from contrib.admin import CommonAdminMixin
-from utils import file_size_validator, RestrictedFileField, cvt_to_decimal, get_member, normalize_name, normalize_filename, coming_midnight, mondays_until_nth
+from rules.contrib.models import RulesModelBase
+from rules.contrib.models import RulesModelMixin
+from utils import file_size_validator
+from utils import mondays_until_nth
+from utils import RestrictedFileField
 
 User = get_user_model()
 
+
 class CommonModelTestCase(TestCase):
     def test_common_model_abstract_base(self):
         """Test that CommonModel provides the correct meta attributes"""
         meta = CommonModel._meta
         self.assertTrue(meta.abstract)
         expected_permissions = (
-            'add_global', 'change_global', 'view_global', 'delete_global', 'list_global', 'view',
+            "add_global",
+            "change_global",
+            "view_global",
+            "delete_global",
+            "list_global",
+            "view",
         )
         self.assertEqual(meta.default_permissions, expected_permissions)
 
@@ -38,15 +48,13 @@ class CommonModelTestCase(TestCase):
 class GlobalPermissionRulesTestCase(TestCase):
     def setUp(self):
         self.user = User.objects.create_user(
-            username='testuser',
-            email='test@example.com',
-            password='testpass123'
+            username="testuser", email="test@example.com", password="testpass123"
         )
 
     def test_has_global_perm_predicate_creation(self):
         """Test that has_global_perm creates a predicate function"""
         # has_global_perm is a decorator factory, not a direct predicate
-        predicate = has_global_perm('auth.add_user')
+        predicate = has_global_perm("auth.add_user")
         self.assertTrue(callable(predicate))
 
     def test_has_global_perm_with_superuser(self):
@@ -54,33 +62,32 @@ class GlobalPermissionRulesTestCase(TestCase):
         self.user.is_superuser = True
         self.user.save()
 
-        predicate = has_global_perm('auth.add_user')
+        predicate = has_global_perm("auth.add_user")
         result = predicate(self.user, None)
         self.assertTrue(result)
 
     def test_has_global_perm_with_regular_user(self):
         """Test that regular users don't automatically have global permissions"""
-        predicate = has_global_perm('auth.add_user')
+        predicate = has_global_perm("auth.add_user")
         result = predicate(self.user, None)
         self.assertFalse(result)
 
 
 class CommonAdminMixinTestCase(TestCase):
     def setUp(self):
-        self.user = User.objects.create_user(username='testuser', password='testpass')
+        self.user = User.objects.create_user(username="testuser", password="testpass")
 
     def test_formfield_for_dbfield_with_formfield_overrides(self):
         """Test formfield_for_dbfield when db_field class is in formfield_overrides"""
+
         # Create a test admin instance that inherits from Django's ModelAdmin
         class TestAdmin(CommonAdminMixin, admin.ModelAdmin):
-            formfield_overrides = {
-                models.ForeignKey: {'widget': Mock()}
-            }
+            formfield_overrides = {models.ForeignKey: {"widget": Mock()}}
 
         # Create a mock model to use with the admin
         class TestModel:
             _meta = Mock()
-            _meta.app_label = 'test'
+            _meta.app_label = "test"
 
         admin_instance = TestAdmin(TestModel, admin.site)
 
@@ -88,11 +95,11 @@ class CommonAdminMixinTestCase(TestCase):
         db_field = models.ForeignKey(User, on_delete=models.CASCADE)
 
         # Create a test request
-        request = RequestFactory().get('/')
+        request = RequestFactory().get("/")
         request.user = self.user
 
         # Call the method to test formfield_overrides usage
-        result = admin_instance.formfield_for_dbfield(db_field, request, help_text='Test help text')
+        result = admin_instance.formfield_for_dbfield(db_field, request, help_text="Test help text")
 
         # Verify that the formfield_overrides were used
         self.assertIsNotNone(result)
@@ -101,9 +108,7 @@ class CommonAdminMixinTestCase(TestCase):
 class UtilsTestCase(TestCase):
     def setUp(self):
         self.user = User.objects.create_user(
-            username='testuser',
-            email='test@example.com',
-            password='testpass123'
+            username="testuser", email="test@example.com", password="testpass123"
         )
 
     def test_file_size_validator_exceeds_limit(self):
@@ -118,12 +123,14 @@ class UtilsTestCase(TestCase):
             validator(mock_file)
 
         # Check for the translated error message
-        expected_message = str(_('Please keep filesize under {} MiB. Current filesize: {:10.2f} MiB.').format(1, 2.00))
+        expected_message = str(
+            _("Please keep filesize under {} MiB. Current filesize: {:10.2f} MiB.").format(1, 2.00)
+        )
         self.assertIn(expected_message, str(cm.exception))
 
     def test_restricted_file_field_content_type_not_supported(self):
         """Test RestrictedFileField when content type is not supported"""
-        field = RestrictedFileField(content_types=['image/jpeg'])
+        field = RestrictedFileField(content_types=["image/jpeg"])
 
         # Create mock data with unsupported content type
         mock_data = Mock()
@@ -131,12 +138,12 @@ class UtilsTestCase(TestCase):
         mock_data.file.content_type = "text/plain"
 
         # Mock the super().clean() to return our mock data
-        with patch.object(models.FileField, 'clean', return_value=mock_data):
+        with patch.object(models.FileField, "clean", return_value=mock_data):
             with self.assertRaises(ValidationError) as cm:
                 field.clean("dummy")
 
             # Check for the translated error message
-            expected_message = str(_('Filetype not supported.'))
+            expected_message = str(_("Filetype not supported."))
             self.assertIn(expected_message, str(cm.exception))
 
     def test_restricted_file_field_size_exceeds_limit(self):
@@ -150,12 +157,14 @@ class UtilsTestCase(TestCase):
         mock_data.file._size = 2  # 2 bytes, exceeds limit
 
         # Mock the super().clean() to return our mock data
-        with patch.object(models.FileField, 'clean', return_value=mock_data):
+        with patch.object(models.FileField, "clean", return_value=mock_data):
             with self.assertRaises(ValidationError) as cm:
                 field.clean("dummy")
 
             # Check for the translated error message
-            expected_message = str(_('Please keep filesize under {}. Current filesize: {}').format(1, 2))
+            expected_message = str(
+                _("Please keep filesize under {}. Current filesize: {}").format(1, 2)
+            )
             self.assertIn(expected_message, str(cm.exception))
 
     def test_mondays_until_nth(self):
diff --git a/jdav_web/logindata/admin.py b/jdav_web/logindata/admin.py
index 377e974..333df29 100644
--- a/jdav_web/logindata/admin.py
+++ b/jdav_web/logindata/admin.py
@@ -1,10 +1,16 @@
-from django.utils.translation import gettext_lazy as _
 from django.contrib import admin
-from django.contrib.auth.admin import UserAdmin as BaseUserAdmin, GroupAdmin as BaseAuthGroupAdmin
-from django.contrib.auth.models import User as BaseUser, Group as BaseAuthGroup
-from .models import AuthGroup, LoginDatum, RegistrationPassword
+from django.contrib.auth.admin import GroupAdmin as BaseAuthGroupAdmin
+from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
+from django.contrib.auth.models import Group as BaseAuthGroup
+from django.contrib.auth.models import User as BaseUser
+from django.utils.translation import gettext_lazy as _
 from members.models import Member
 
+from .models import AuthGroup
+from .models import LoginDatum
+from .models import RegistrationPassword
+
+
 # Register your models here.
 class AuthGroupAdmin(BaseAuthGroupAdmin):
     pass
@@ -17,8 +23,8 @@ class UserInline(admin.StackedInline):
 
 
 class LoginDatumAdmin(BaseUserAdmin):
-    list_display = ('username', 'is_superuser')
-    #inlines = [UserInline]
+    list_display = ("username", "is_superuser")
+    # inlines = [UserInline]
     fieldsets = (
         (None, {"fields": ("username", "password")}),
         (
@@ -45,6 +51,7 @@ class LoginDatumAdmin(BaseUserAdmin):
         ),
     )
 
+
 admin.site.unregister(BaseUser)
 admin.site.unregister(BaseAuthGroup)
 admin.site.register(LoginDatum, LoginDatumAdmin)
diff --git a/jdav_web/logindata/apps.py b/jdav_web/logindata/apps.py
index b1a5370..887724a 100644
--- a/jdav_web/logindata/apps.py
+++ b/jdav_web/logindata/apps.py
@@ -3,6 +3,6 @@ from django.utils.translation import gettext_lazy as _
 
 
 class LoginDataConfig(AppConfig):
-    default_auto_field = 'django.db.models.BigAutoField'
-    name = 'logindata'
-    verbose_name = _('Authentication')
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "logindata"
+    verbose_name = _("Authentication")
diff --git a/jdav_web/logindata/models.py b/jdav_web/logindata/models.py
index c86deaa..fc5070f 100644
--- a/jdav_web/logindata/models.py
+++ b/jdav_web/logindata/models.py
@@ -1,39 +1,41 @@
-from django.utils.translation import gettext_lazy as _
+from django.contrib.auth.models import Group as BaseAuthGroup
+from django.contrib.auth.models import User as BaseUser
 from django.db import models
-from django.contrib.auth.admin import UserAdmin as BaseUserAdmin, GroupAdmin as BaseAuthGroupAdmin
-from django.contrib.auth.models import User as BaseUser, Group as BaseAuthGroup
+from django.utils.translation import gettext_lazy as _
 
 
 class AuthGroup(BaseAuthGroup):
     class Meta:
         proxy = True
-        verbose_name = _('Permission group')
-        verbose_name_plural = _('Permission groups')
+        verbose_name = _("Permission group")
+        verbose_name_plural = _("Permission groups")
 
 
 class LoginDatum(BaseUser):
     class Meta:
         proxy = True
-        verbose_name = _('Login Datum')
-        verbose_name_plural = _('Login Data')
+        verbose_name = _("Login Datum")
+        verbose_name_plural = _("Login Data")
 
 
 class RegistrationPassword(models.Model):
     """
     A password that can be used to register after inviting a member.
     """
-    password = models.CharField(max_length=100, verbose_name=_('Password'))
+
+    password = models.CharField(max_length=100, verbose_name=_("Password"))
 
     def __str__(self):
         return self.password
 
     class Meta:
-        verbose_name = _('Active registration password')
-        verbose_name_plural = _('Active registration passwords')
+        verbose_name = _("Active registration password")
+        verbose_name_plural = _("Active registration passwords")
+
 
 def initial_user_setup(user, member):
     try:
-        standard_group = AuthGroup.objects.get(name='Standard')
+        standard_group = AuthGroup.objects.get(name="Standard")
     except AuthGroup.DoesNotExist:
         return False
 
@@ -41,6 +43,6 @@ def initial_user_setup(user, member):
     user.save()
     user.groups.add(standard_group)
     member.user = user
-    member.invite_as_user_key = ''
+    member.invite_as_user_key = ""
     member.save()
     return True
diff --git a/jdav_web/logindata/oauth.py b/jdav_web/logindata/oauth.py
index ee0e5f3..da0d6a3 100644
--- a/jdav_web/logindata/oauth.py
+++ b/jdav_web/logindata/oauth.py
@@ -7,7 +7,7 @@ class CustomOAuth2Validator(OAuth2Validator):
 
     def get_additional_claims(self, request):
         if request.user.member:
-            context = {'email': request.user.member.email}
+            context = {"email": request.user.member.email}
         else:
             context = {}
         return dict(context, preferred_username=request.user.username)
diff --git a/jdav_web/logindata/urls.py b/jdav_web/logindata/urls.py
index 80d08b5..860b953 100644
--- a/jdav_web/logindata/urls.py
+++ b/jdav_web/logindata/urls.py
@@ -4,5 +4,5 @@ from . import views
 
 app_name = "logindata"
 urlpatterns = [
-    re_path(r'^register', views.register , name='register'),
+    re_path(r"^register", views.register, name="register"),
 ]
diff --git a/jdav_web/logindata/views.py b/jdav_web/logindata/views.py
index 3af30b0..dad0aed 100644
--- a/jdav_web/logindata/views.py
+++ b/jdav_web/logindata/views.py
@@ -1,44 +1,46 @@
-from django import forms
-from django.shortcuts import render
+from django.contrib.auth.forms import UserCreationForm
 from django.http import HttpResponseRedirect
-from django.utils.translation import gettext_lazy as _
+from django.shortcuts import render
 from django.urls import reverse
-from django.contrib.auth.forms import UserCreationForm
+from django.utils.translation import gettext_lazy as _
 from members.models import Member
-from .models import initial_user_setup, RegistrationPassword
+
+from .models import initial_user_setup
+from .models import RegistrationPassword
 
 
-def render_register_password(request, key, member, error_message=''):
-    return render(request, 'logindata/register_password.html',
-                  context={'key': key,
-                           'member': member,
-                           'error_message': error_message})
+def render_register_password(request, key, member, error_message=""):
+    return render(
+        request,
+        "logindata/register_password.html",
+        context={"key": key, "member": member, "error_message": error_message},
+    )
 
 
 def render_register_failed(request):
-    return render(request, 'logindata/register_failed.html')
+    return render(request, "logindata/register_failed.html")
 
 
 def render_register_form(request, key, password, member, form):
-    return render(request, 'logindata/register_form.html',
-                  context={'key': key,
-                           'password': password,
-                           'member': member,
-                           'form': form})
+    return render(
+        request,
+        "logindata/register_form.html",
+        context={"key": key, "password": password, "member": member, "form": form},
+    )
 
 
 def render_register_success(request):
-    return render(request, 'logindata/register_success.html')
+    return render(request, "logindata/register_success.html")
 
 
 # Create your views here.
 def register(request):
-    if request.method == 'GET' and 'key' not in request.GET:
-        return HttpResponseRedirect(reverse('startpage:index'))
-    if request.method == 'POST' and 'key' not in request.POST:
-        return HttpResponseRedirect(reverse('startpage:index'))
+    if request.method == "GET" and "key" not in request.GET:
+        return HttpResponseRedirect(reverse("startpage:index"))
+    if request.method == "POST" and "key" not in request.POST:
+        return HttpResponseRedirect(reverse("startpage:index"))
 
-    key = request.GET['key'] if request.method == 'GET' else request.POST['key']
+    key = request.GET["key"] if request.method == "GET" else request.POST["key"]
     if not key:
         return render_register_failed(request)
     try:
@@ -46,17 +48,19 @@ def register(request):
     except (Member.DoesNotExist, Member.MultipleObjectsReturned):
         return render_register_failed(request)
 
-    if request.method == 'GET':
-        return render_register_password(request, request.GET['key'], member)
+    if request.method == "GET":
+        return render_register_password(request, request.GET["key"], member)
 
-    if 'password' not in request.POST:
+    if "password" not in request.POST:
         return render_register_failed(request)
 
-    password = request.POST['password']
+    password = request.POST["password"]
 
     # check if the entered password is one of the active registration passwords
     if RegistrationPassword.objects.filter(password=password).count() == 0:
-        return render_register_password(request, key, member, error_message=_('You entered a wrong password.'))
+        return render_register_password(
+            request, key, member, error_message=_("You entered a wrong password.")
+        )
 
     if "save" in request.POST:
         form = UserCreationForm(request.POST)
@@ -70,6 +74,6 @@ def register(request):
         else:
             return render_register_failed(request)
     else:
-        prefill = {'username': member.suggested_username()}
+        prefill = {"username": member.suggested_username()}
         form = UserCreationForm(initial=prefill)
         return render_register_form(request, key, password, member, form)
diff --git a/jdav_web/ludwigsburgalpin/admin.py b/jdav_web/ludwigsburgalpin/admin.py
index 7f1e480..89d5f76 100644
--- a/jdav_web/ludwigsburgalpin/admin.py
+++ b/jdav_web/ludwigsburgalpin/admin.py
@@ -1,26 +1,23 @@
-import os
-
+import xlsxwriter
+from contrib.media import ensure_media_dir
+from contrib.media import media_path
+from contrib.media import serve_media
 from django.contrib import admin
-from wsgiref.util import FileWrapper
-from django.http import HttpResponse
-from django.conf import settings
-from .models import Termin
-from contrib.media import media_path, serve_media, ensure_media_dir
 
-import xlsxwriter
+from .models import Termin
 
 
 class TerminAdmin(admin.ModelAdmin):
-    list_display = ('title','start_date', 'end_date', 'group', 'category', 'responsible')
-    list_filter = ('group',)
-    ordering = ('start_date','end_date')
-    actions = ['make_overview']
+    list_display = ("title", "start_date", "end_date", "group", "category", "responsible")
+    list_filter = ("group",)
+    ordering = ("start_date", "end_date")
+    actions = ["make_overview"]
 
     def make_overview(self, request, queryset):
         ensure_media_dir()
-        filename = 'termine.xlsx'
+        filename = "termine.xlsx"
         workbook = xlsxwriter.Workbook(media_path(filename))
-        bold = workbook.add_format({'bold': True})
+        bold = workbook.add_format({"bold": True})
         worksheet = workbook.add_worksheet()
         worksheet.write(0, 0, "Titel", bold)
         worksheet.write(0, 1, "Untertitel", bold)
@@ -44,30 +41,32 @@ class TerminAdmin(admin.ModelAdmin):
         worksheet.write(0, 19, "Telefonnummer", bold)
         worksheet.write(0, 20, "Emailadresse", bold)
         for row, termin in enumerate(queryset):
-            worksheet.write(row+2, 0, termin.title)
-            worksheet.write(row+2, 1, termin.subtitle)
-            worksheet.write(row+2, 2, termin.start_date.strftime('%d.%m.%Y'))
-            worksheet.write(row+2, 3, termin.end_date.strftime('%d.%m.%Y'))
-            worksheet.write(row+2, 4, termin.group)
-            worksheet.write(row+2, 5, termin.category)
-            worksheet.write(row+2, 6, termin.technik)
-            worksheet.write(row+2, 7, termin.condition)
-            worksheet.write(row+2, 8, termin.saison)
-            worksheet.write(row+2, 9, termin.eventart)
-            worksheet.write(row+2, 10, termin.klassifizierung)
-            worksheet.write(row+2, 11, termin.anforderung_hoehe)
-            worksheet.write(row+2, 12, termin.anforderung_strecke)
-            worksheet.write(row+2, 13, termin.anforderung_dauer)
-            worksheet.write(row+2, 14, termin.voraussetzungen)
-            worksheet.write(row+2, 15, termin.description)
-            worksheet.write(row+2, 16, termin.equipment)
-            worksheet.write(row+2, 17, termin.max_participants)
-            worksheet.write(row+2, 18, termin.responsible)
-            worksheet.write(row+2, 19, termin.phone)
-            worksheet.write(row+2, 20, termin.email)
+            worksheet.write(row + 2, 0, termin.title)
+            worksheet.write(row + 2, 1, termin.subtitle)
+            worksheet.write(row + 2, 2, termin.start_date.strftime("%d.%m.%Y"))
+            worksheet.write(row + 2, 3, termin.end_date.strftime("%d.%m.%Y"))
+            worksheet.write(row + 2, 4, termin.group)
+            worksheet.write(row + 2, 5, termin.category)
+            worksheet.write(row + 2, 6, termin.technik)
+            worksheet.write(row + 2, 7, termin.condition)
+            worksheet.write(row + 2, 8, termin.saison)
+            worksheet.write(row + 2, 9, termin.eventart)
+            worksheet.write(row + 2, 10, termin.klassifizierung)
+            worksheet.write(row + 2, 11, termin.anforderung_hoehe)
+            worksheet.write(row + 2, 12, termin.anforderung_strecke)
+            worksheet.write(row + 2, 13, termin.anforderung_dauer)
+            worksheet.write(row + 2, 14, termin.voraussetzungen)
+            worksheet.write(row + 2, 15, termin.description)
+            worksheet.write(row + 2, 16, termin.equipment)
+            worksheet.write(row + 2, 17, termin.max_participants)
+            worksheet.write(row + 2, 18, termin.responsible)
+            worksheet.write(row + 2, 19, termin.phone)
+            worksheet.write(row + 2, 20, termin.email)
         workbook.close()
-        return serve_media(filename, 'application/xlsx')
+        return serve_media(filename, "application/xlsx")
+
     make_overview.short_description = "Termine in Excel Liste überführen"
 
+
 # Register your models here.
 admin.site.register(Termin, TerminAdmin)
diff --git a/jdav_web/ludwigsburgalpin/apps.py b/jdav_web/ludwigsburgalpin/apps.py
index 203b4d9..47142b5 100644
--- a/jdav_web/ludwigsburgalpin/apps.py
+++ b/jdav_web/ludwigsburgalpin/apps.py
@@ -2,4 +2,4 @@ from django.apps import AppConfig
 
 
 class LudwigsburgalpinConfig(AppConfig):
-    name = 'ludwigsburgalpin'
+    name = "ludwigsburgalpin"
diff --git a/jdav_web/ludwigsburgalpin/models.py b/jdav_web/ludwigsburgalpin/models.py
index 9f57218..cef29b2 100644
--- a/jdav_web/ludwigsburgalpin/models.py
+++ b/jdav_web/ludwigsburgalpin/models.py
@@ -1,121 +1,128 @@
-from django.db import models
 from django.core.validators import MinValueValidator
+from django.db import models
 
 GRUPPE = [
-    ('ASG', 'Alpinsportgruppe'),
-    ('OGB', 'Ortsgruppe Bietigheim'),
-    ('OGV', 'Ortsgruppe Vaihingen'),
-    ('JUG', 'Jugend'),
-    ('FAM', 'Familie'),
-    ('Ü30', 'Ü30'),
-    ('MTB', 'Mountainbike'),
-    ('RA',  'RegioAktiv'),
-    ('SEK', 'Sektion'),
+    ("ASG", "Alpinsportgruppe"),
+    ("OGB", "Ortsgruppe Bietigheim"),
+    ("OGV", "Ortsgruppe Vaihingen"),
+    ("JUG", "Jugend"),
+    ("FAM", "Familie"),
+    ("Ü30", "Ü30"),
+    ("MTB", "Mountainbike"),
+    ("RA", "RegioAktiv"),
+    ("SEK", "Sektion"),
 ]
 KATEGORIE = [
-    ('WAN', 'Wandern'),
-    ('BW', 'Bergwandern'),
-    ('KST', 'Klettersteig'),
-    ('KL', 'Klettern'),
-    ('SKI', 'Piste, Loipe'),
-    ('SCH', 'Schneeschuhgehen'),
-    ('ST', 'Skitour'),
-    ('STH', 'Skihochtour'),
-    ('HT', 'Hochtour'),
-    ('MTB', 'Montainbike'),
-    ('AUS', 'Ausbildung'),
-    ('SON', 'Sonstiges z.B. Treffen')
+    ("WAN", "Wandern"),
+    ("BW", "Bergwandern"),
+    ("KST", "Klettersteig"),
+    ("KL", "Klettern"),
+    ("SKI", "Piste, Loipe"),
+    ("SCH", "Schneeschuhgehen"),
+    ("ST", "Skitour"),
+    ("STH", "Skihochtour"),
+    ("HT", "Hochtour"),
+    ("MTB", "Montainbike"),
+    ("AUS", "Ausbildung"),
+    ("SON", "Sonstiges z.B. Treffen"),
 ]
 KONDITION = [
-    ('gering', 'gering'),
-    ('mittel', 'mittel'),
-    ('groß', 'groß'),
-    ('sehr groß', 'sehr groß'),
+    ("gering", "gering"),
+    ("mittel", "mittel"),
+    ("groß", "groß"),
+    ("sehr groß", "sehr groß"),
 ]
 TECHNIK = [
-    ('leicht', 'leicht'),
-    ('mittel', 'mittel'),
-    ('schwer', 'schwer'),
-    ('sehr schwer', 'sehr schwer'),
+    ("leicht", "leicht"),
+    ("mittel", "mittel"),
+    ("schwer", "schwer"),
+    ("sehr schwer", "sehr schwer"),
 ]
 SAISON = [
-    ('ganzjährig','ganzjährig'),
-    ('Indoor', 'Indoor'),
-    ('Sommer', 'Sommer'),
-    ('Winter', 'Winter'),
+    ("ganzjährig", "ganzjährig"),
+    ("Indoor", "Indoor"),
+    ("Sommer", "Sommer"),
+    ("Winter", "Winter"),
 ]
 EVENTART = [
-    ('Einzeltermin', 'Einzeltermin',),
-    ('Mehrtagesevent', 'Mehrtagesevent',),
-    ('Regelmäßiges Event/Training', 'Regelmäßiges Event/Training',),
-    ('Tagesevent', 'Tagesevent',),
-    ('Wochenendevent', 'Wochenendevent',),
+    (
+        "Einzeltermin",
+        "Einzeltermin",
+    ),
+    (
+        "Mehrtagesevent",
+        "Mehrtagesevent",
+    ),
+    (
+        "Regelmäßiges Event/Training",
+        "Regelmäßiges Event/Training",
+    ),
+    (
+        "Tagesevent",
+        "Tagesevent",
+    ),
+    (
+        "Wochenendevent",
+        "Wochenendevent",
+    ),
 ]
 KLASSIFIZIERUNG = [
-    ('Gemeinschaftstour', 'Gemeinschaftstour'),
-    ('Ausbildung', 'Ausbildung'),
+    ("Gemeinschaftstour", "Gemeinschaftstour"),
+    ("Ausbildung", "Ausbildung"),
 ]
 
 
 # Create your models here.
 class Termin(models.Model):
-    title = models.CharField('Titel', max_length=100)
-    subtitle = models.CharField('Untertitel', max_length=100, blank=True)
-    start_date = models.DateField('Von')
-    end_date = models.DateField('Bis')
-    group = models.CharField('Gruppe',
-                              choices=GRUPPE,
-                              max_length=100)
-    responsible = models.CharField('Organisator', max_length=100, blank=False)
-    phone = models.CharField(max_length=20, verbose_name='Telefonnumer', blank=True)
-    email = models.EmailField(max_length=100, verbose_name='Email', blank=False)
-    category = models.CharField('Kategorie', blank=False, choices=KATEGORIE, max_length=100,
-                                default='SON')
-    condition = models.CharField('Kondition', blank=False, choices=KONDITION, max_length=100,
-                                 default='mittel')
-    technik = models.CharField('Technik', blank=False, choices=TECHNIK, max_length=100,
-                               default='mittel')
-    saison = models.CharField('Saison', blank=False, choices=SAISON, max_length=100,
-                              default='ganzjährig')
-    eventart = models.CharField('Eventart', blank=False, choices=EVENTART, max_length=100,
-                                default='Einzeltermin')
-    klassifizierung = models.CharField('Klassifizierung', blank=False, choices=KLASSIFIZIERUNG,
-                                       max_length=100,
-                                       default='Gemeinschaftstour')
-    equipment = models.TextField('Ausrüstung',
-                                 blank=True)
-    voraussetzungen = models.TextField('Voraussetzungen',
-                                       blank=True)
-    description = models.TextField('Beschreibung',
-                                   blank=True)
-    max_participants = models.IntegerField('Max. Teilnehmerzahl',
-                                           blank=False,
-                                           validators=[
-                                               MinValueValidator(1)
-                                           ],
-                                           default=10)
-    anforderung_hoehe = models.IntegerField('Höhenmeter in Meter',
-                                            blank=True,
-                                            validators=[
-                                                MinValueValidator(0)
-                                            ],
-                                            default=0)
-    anforderung_strecke = models.IntegerField('Strecke in Kilometer',
-                                              blank=True,
-                                              validators=[
-                                                  MinValueValidator(0)
-                                              ],
-                                              default=0)
-    anforderung_dauer = models.IntegerField('Etappendauer in Stunden',
-                                            blank=True,
-                                            validators=[
-                                                MinValueValidator(0)
-                                            ],
-                                            default=0)
+    title = models.CharField("Titel", max_length=100)
+    subtitle = models.CharField("Untertitel", max_length=100, blank=True)
+    start_date = models.DateField("Von")
+    end_date = models.DateField("Bis")
+    group = models.CharField("Gruppe", choices=GRUPPE, max_length=100)
+    responsible = models.CharField("Organisator", max_length=100, blank=False)
+    phone = models.CharField(max_length=20, verbose_name="Telefonnumer", blank=True)
+    email = models.EmailField(max_length=100, verbose_name="Email", blank=False)
+    category = models.CharField(
+        "Kategorie", blank=False, choices=KATEGORIE, max_length=100, default="SON"
+    )
+    condition = models.CharField(
+        "Kondition", blank=False, choices=KONDITION, max_length=100, default="mittel"
+    )
+    technik = models.CharField(
+        "Technik", blank=False, choices=TECHNIK, max_length=100, default="mittel"
+    )
+    saison = models.CharField(
+        "Saison", blank=False, choices=SAISON, max_length=100, default="ganzjährig"
+    )
+    eventart = models.CharField(
+        "Eventart", blank=False, choices=EVENTART, max_length=100, default="Einzeltermin"
+    )
+    klassifizierung = models.CharField(
+        "Klassifizierung",
+        blank=False,
+        choices=KLASSIFIZIERUNG,
+        max_length=100,
+        default="Gemeinschaftstour",
+    )
+    equipment = models.TextField("Ausrüstung", blank=True)
+    voraussetzungen = models.TextField("Voraussetzungen", blank=True)
+    description = models.TextField("Beschreibung", blank=True)
+    max_participants = models.IntegerField(
+        "Max. Teilnehmerzahl", blank=False, validators=[MinValueValidator(1)], default=10
+    )
+    anforderung_hoehe = models.IntegerField(
+        "Höhenmeter in Meter", blank=True, validators=[MinValueValidator(0)], default=0
+    )
+    anforderung_strecke = models.IntegerField(
+        "Strecke in Kilometer", blank=True, validators=[MinValueValidator(0)], default=0
+    )
+    anforderung_dauer = models.IntegerField(
+        "Etappendauer in Stunden", blank=True, validators=[MinValueValidator(0)], default=0
+    )
 
     def __str__(self):
         return "{} {}".format(self.title, str(self.group))
 
     class Meta:
-        verbose_name = 'Termin'
-        verbose_name_plural = 'Termine'
+        verbose_name = "Termin"
+        verbose_name_plural = "Termine"
diff --git a/jdav_web/ludwigsburgalpin/tests.py b/jdav_web/ludwigsburgalpin/tests.py
index 38f15a9..bac0bf9 100644
--- a/jdav_web/ludwigsburgalpin/tests.py
+++ b/jdav_web/ludwigsburgalpin/tests.py
@@ -1,13 +1,21 @@
 from http import HTTPStatus
 
-from django.test import TestCase, RequestFactory
-from django.utils import timezone
+from django.conf import settings
 from django.contrib.admin.sites import AdminSite
+from django.test import RequestFactory
+from django.test import TestCase
 from django.urls import reverse
-from django.conf import settings
-from .models import Termin, GRUPPE, KATEGORIE, KONDITION, TECHNIK, SAISON,\
-        EVENTART, KLASSIFIZIERUNG
+from django.utils import timezone
+
 from .admin import TerminAdmin
+from .models import EVENTART
+from .models import GRUPPE
+from .models import KATEGORIE
+from .models import KLASSIFIZIERUNG
+from .models import KONDITION
+from .models import SAISON
+from .models import TECHNIK
+from .models import Termin
 
 
 class BasicTerminTestCase(TestCase):
@@ -15,68 +23,80 @@ class BasicTerminTestCase(TestCase):
 
     def setUp(self):
         for i in range(BasicTerminTestCase.TERMIN_NO):
-            Termin.objects.create(title='Foo {}'.format(i),
-                                  start_date=timezone.now().date(),
-                                  end_date=timezone.now().date(),
-                                  group=GRUPPE[0][0],
-                                  email=settings.TEST_MAIL,
-                                  category=KATEGORIE[0][0],
-                                  technik=TECHNIK[0][0],
-                                  max_participants=42,
-                                  anforderung_hoehe=10)
+            Termin.objects.create(
+                title="Foo {}".format(i),
+                start_date=timezone.now().date(),
+                end_date=timezone.now().date(),
+                group=GRUPPE[0][0],
+                email=settings.TEST_MAIL,
+                category=KATEGORIE[0][0],
+                technik=TECHNIK[0][0],
+                max_participants=42,
+                anforderung_hoehe=10,
+            )
 
 
 class TerminAdminTestCase(BasicTerminTestCase):
     def test_str(self):
         t = Termin.objects.all()[0]
-        self.assertEqual(str(t), '{} {}'.format(t.title, str(t.group)))
+        self.assertEqual(str(t), "{} {}".format(t.title, str(t.group)))
 
     def test_make_overview(self):
         factory = RequestFactory()
         admin = TerminAdmin(Termin, AdminSite())
-        url = reverse('admin:ludwigsburgalpin_termin_changelist')
+        url = reverse("admin:ludwigsburgalpin_termin_changelist")
         request = factory.get(url)
 
         response = admin.make_overview(request, Termin.objects.all())
 
-        self.assertEqual(response['Content-Type'], 'application/xlsx',
-                         'The content-type of the generated overview should be an .xlsx file.')
+        self.assertEqual(
+            response["Content-Type"],
+            "application/xlsx",
+            "The content-type of the generated overview should be an .xlsx file.",
+        )
+
 
 class ViewTestCase(BasicTerminTestCase):
     def test_get_index(self):
-        url = reverse('ludwigsburgalpin:index')
+        url = reverse("ludwigsburgalpin:index")
         response = self.client.get(url)
         self.assertEqual(response.status_code, HTTPStatus.OK)
 
     def test_submit_termin(self):
-        url = reverse('ludwigsburgalpin:index')
-        response = self.client.post(url, data={
-            'title': 'My Title',
-            'subtitle': 'My Subtitle',
-            'start_date': '2024-01-01',
-            'end_date': '2024-02-01',
-            'group': GRUPPE[0][0],
-            'category': KATEGORIE[0][0],
-            'condition': KONDITION[0][0],
-            'technik': TECHNIK[0][0],
-            'saison': SAISON[0][0],
-            'eventart': EVENTART[0][0],
-            'klassifizierung': KLASSIFIZIERUNG[0][0],
-            'anforderung_hoehe': 10,
-            'anforderung_strecke': 10,
-            'anforderung_dauer': 10,
-            'max_participants': 100,
-        })
-        t = Termin.objects.get(title='My Title')
+        url = reverse("ludwigsburgalpin:index")
+        response = self.client.post(
+            url,
+            data={
+                "title": "My Title",
+                "subtitle": "My Subtitle",
+                "start_date": "2024-01-01",
+                "end_date": "2024-02-01",
+                "group": GRUPPE[0][0],
+                "category": KATEGORIE[0][0],
+                "condition": KONDITION[0][0],
+                "technik": TECHNIK[0][0],
+                "saison": SAISON[0][0],
+                "eventart": EVENTART[0][0],
+                "klassifizierung": KLASSIFIZIERUNG[0][0],
+                "anforderung_hoehe": 10,
+                "anforderung_strecke": 10,
+                "anforderung_dauer": 10,
+                "max_participants": 100,
+            },
+        )
+        t = Termin.objects.get(title="My Title")
         self.assertEqual(t.group, GRUPPE[0][0])
         self.assertEqual(response.status_code, HTTPStatus.OK)
         self.assertContains(response, "Termin erfolgreich eingereicht", html=True)
 
     def test_submit_termin_invalid(self):
-        url = reverse('ludwigsburgalpin:index')
+        url = reverse("ludwigsburgalpin:index")
         # many required fields are missing
-        response = self.client.post(url, data={
-            'title': 'My Title',
-        })
+        response = self.client.post(
+            url,
+            data={
+                "title": "My Title",
+            },
+        )
         self.assertEqual(response.status_code, HTTPStatus.OK)
         self.assertContains(response, "Dieses Feld ist zwingend erforderlich.", html=True)
diff --git a/jdav_web/ludwigsburgalpin/urls.py b/jdav_web/ludwigsburgalpin/urls.py
index ae54963..bc72e3e 100644
--- a/jdav_web/ludwigsburgalpin/urls.py
+++ b/jdav_web/ludwigsburgalpin/urls.py
@@ -4,6 +4,6 @@ from . import views
 
 app_name = "ludwigsburgalpin"
 urlpatterns = [
-    re_path(r'^$', views.index, name='index')
+    re_path(r"^$", views.index, name="index")
     # re_path(r'^subscribe', views.subscribe, name='subscribe'),
 ]
diff --git a/jdav_web/ludwigsburgalpin/views.py b/jdav_web/ludwigsburgalpin/views.py
index db90ac9..64e7ea5 100644
--- a/jdav_web/ludwigsburgalpin/views.py
+++ b/jdav_web/ludwigsburgalpin/views.py
@@ -1,100 +1,89 @@
-from django.shortcuts import render
 from django import forms
-from django.http import HttpResponseRedirect
-from django.contrib.admin import widgets
 from django.core.validators import MinValueValidator
-from .models import Termin, GRUPPE, KATEGORIE, KONDITION, TECHNIK, SAISON, EVENTART, KLASSIFIZIERUNG
+from django.shortcuts import render
 
-datepicker = forms.TextInput(attrs={'class': 'datepicker'})
+from .models import EVENTART
+from .models import GRUPPE
+from .models import KATEGORIE
+from .models import KLASSIFIZIERUNG
+from .models import KONDITION
+from .models import SAISON
+from .models import TECHNIK
+from .models import Termin
 
+datepicker = forms.TextInput(attrs={"class": "datepicker"})
 
-class TerminForm(forms.Form):
 
-
-    title = forms.CharField(label='Titel')
-    subtitle = forms.CharField(label='Untertitel')
-    start_date = forms.DateField(label='Von',
-                                 widget=datepicker)
-    end_date = forms.DateField(label='Bis',
-                               widget=datepicker)
-    group = forms.ChoiceField(label='Gruppe',
-                              required=True,
-                              choices=GRUPPE)
-    category = forms.ChoiceField(label='Kategorie', required=True, choices=KATEGORIE)
-    condition = forms.ChoiceField(label='Kondition', required=True, choices=KONDITION)
-    technik = forms.ChoiceField(label='Technik', required=True, choices=TECHNIK)
-    saison = forms.ChoiceField(label='Saison', required=True, choices=SAISON)
-    eventart = forms.ChoiceField(label='Eventart', required=True, choices=EVENTART)
-    klassifizierung = forms.ChoiceField(label='Klassifizierung', required=True, choices=KLASSIFIZIERUNG)
-    anforderung_hoehe = forms.IntegerField(label='Höhenmeter in Metern',
-                                           required=True,
-                                           validators=[
-                                               MinValueValidator(0)
-                                           ])
-    anforderung_strecke = forms.IntegerField(label='Strecke in Kilometern',
-                                             required=True,
-                                             validators=[
-                                                 MinValueValidator(0)
-                                             ])
-    anforderung_dauer = forms.IntegerField(label='Etappendauer in Stunden',
-                                           required=True,
-                                           validators=[
-                                               MinValueValidator(0)
-                                           ])
-    description = forms.CharField(label='Beschreibung',
-                                  widget=forms.Textarea,
-                                  required=False)
-    equipment = forms.CharField(label='Ausrüstung',
-                                widget=forms.Textarea,
-                                required=False)
-    voraussetzungen = forms.CharField(label='Voraussetzungen',
-                                      widget=forms.Textarea,
-                                      required=False)
-    max_participants = forms.IntegerField(label='Max. Teilnehmerzahl',
-                                         required=True,
-                                         validators=[
-                                             MinValueValidator(1)
-                                         ])
-    responsible = forms.CharField(label='Organisator', max_length=100,
-                                  required=False)
-    phone = forms.CharField(max_length=20, label='Telefonnumer',
-                            required=False)
-    email = forms.EmailField(max_length=100, label='Email',
-                             required=False)
+class TerminForm(forms.Form):
+    title = forms.CharField(label="Titel")
+    subtitle = forms.CharField(label="Untertitel")
+    start_date = forms.DateField(label="Von", widget=datepicker)
+    end_date = forms.DateField(label="Bis", widget=datepicker)
+    group = forms.ChoiceField(label="Gruppe", required=True, choices=GRUPPE)
+    category = forms.ChoiceField(label="Kategorie", required=True, choices=KATEGORIE)
+    condition = forms.ChoiceField(label="Kondition", required=True, choices=KONDITION)
+    technik = forms.ChoiceField(label="Technik", required=True, choices=TECHNIK)
+    saison = forms.ChoiceField(label="Saison", required=True, choices=SAISON)
+    eventart = forms.ChoiceField(label="Eventart", required=True, choices=EVENTART)
+    klassifizierung = forms.ChoiceField(
+        label="Klassifizierung", required=True, choices=KLASSIFIZIERUNG
+    )
+    anforderung_hoehe = forms.IntegerField(
+        label="Höhenmeter in Metern", required=True, validators=[MinValueValidator(0)]
+    )
+    anforderung_strecke = forms.IntegerField(
+        label="Strecke in Kilometern", required=True, validators=[MinValueValidator(0)]
+    )
+    anforderung_dauer = forms.IntegerField(
+        label="Etappendauer in Stunden", required=True, validators=[MinValueValidator(0)]
+    )
+    description = forms.CharField(label="Beschreibung", widget=forms.Textarea, required=False)
+    equipment = forms.CharField(label="Ausrüstung", widget=forms.Textarea, required=False)
+    voraussetzungen = forms.CharField(
+        label="Voraussetzungen", widget=forms.Textarea, required=False
+    )
+    max_participants = forms.IntegerField(
+        label="Max. Teilnehmerzahl", required=True, validators=[MinValueValidator(1)]
+    )
+    responsible = forms.CharField(label="Organisator", max_length=100, required=False)
+    phone = forms.CharField(max_length=20, label="Telefonnumer", required=False)
+    email = forms.EmailField(max_length=100, label="Email", required=False)
 
 
 # Create your views here.
 def index(request, *args):
-    if request.method == 'POST':
+    if request.method == "POST":
         form = TerminForm(request.POST)
         if form.is_valid():
-            termin = Termin(title=form.cleaned_data["title"],
-                            subtitle=form.cleaned_data["subtitle"],
-                            start_date=form.cleaned_data["start_date"],
-                            end_date=form.cleaned_data["end_date"],
-                            group=form.cleaned_data["group"],
-                            responsible=form.cleaned_data["responsible"],
-                            phone=form.cleaned_data["phone"],
-                            email=form.cleaned_data["email"],
-                            category=form.cleaned_data["category"],
-                            condition=form.cleaned_data["condition"],
-                            technik=form.cleaned_data["technik"],
-                            saison=form.cleaned_data["saison"],
-                            eventart=form.cleaned_data["eventart"],
-                            klassifizierung=form.cleaned_data["klassifizierung"],
-                            equipment=form.cleaned_data["equipment"],
-                            voraussetzungen=form.cleaned_data["voraussetzungen"],
-                            max_participants=form.cleaned_data["max_participants"],
-                            anforderung_hoehe=form.cleaned_data["anforderung_hoehe"],
-                            anforderung_strecke=form.cleaned_data["anforderung_strecke"],
-                            anforderung_dauer=form.cleaned_data["anforderung_dauer"],
-                            description=form.cleaned_data["description"])
+            termin = Termin(
+                title=form.cleaned_data["title"],
+                subtitle=form.cleaned_data["subtitle"],
+                start_date=form.cleaned_data["start_date"],
+                end_date=form.cleaned_data["end_date"],
+                group=form.cleaned_data["group"],
+                responsible=form.cleaned_data["responsible"],
+                phone=form.cleaned_data["phone"],
+                email=form.cleaned_data["email"],
+                category=form.cleaned_data["category"],
+                condition=form.cleaned_data["condition"],
+                technik=form.cleaned_data["technik"],
+                saison=form.cleaned_data["saison"],
+                eventart=form.cleaned_data["eventart"],
+                klassifizierung=form.cleaned_data["klassifizierung"],
+                equipment=form.cleaned_data["equipment"],
+                voraussetzungen=form.cleaned_data["voraussetzungen"],
+                max_participants=form.cleaned_data["max_participants"],
+                anforderung_hoehe=form.cleaned_data["anforderung_hoehe"],
+                anforderung_strecke=form.cleaned_data["anforderung_strecke"],
+                anforderung_dauer=form.cleaned_data["anforderung_dauer"],
+                description=form.cleaned_data["description"],
+            )
             termin.save()
             return published(request)
     else:
         form = TerminForm()
-    return render(request, 'ludwigsburgalpin/termine.html', {'form': form.as_table()})
+    return render(request, "ludwigsburgalpin/termine.html", {"form": form.as_table()})
 
 
 def published(request):
-    return render(request, 'ludwigsburgalpin/published.html')
+    return render(request, "ludwigsburgalpin/published.html")
diff --git a/jdav_web/utils.py b/jdav_web/utils.py
index 669df4e..03a610c 100644
--- a/jdav_web/utils.py
+++ b/jdav_web/utils.py
@@ -1,11 +1,15 @@
-from datetime import datetime, timedelta
+import logging
+import unicodedata
+from datetime import datetime
+from datetime import timedelta
+from decimal import Decimal
+from decimal import ROUND_HALF_DOWN
+
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils import timezone
-from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
-from decimal import Decimal, ROUND_HALF_DOWN
-import unicodedata
-import logging
+
 logger = logging.getLogger(__name__)
 
 
@@ -14,18 +18,20 @@ def file_size_validator(max_upload_size):
     Returns a function checking if the supplied file has file size less or equal
     than `max_upload_size` in MB.
     """
+
     def check_file_size(value):
         limit = max_upload_size * 1024 * 1024
         if value.size > limit:
-            raise ValidationError(_('Please keep filesize under {} MiB. '
-                                    'Current filesize: '
-                                    '{:10.2f} MiB.').format(max_upload_size,
-                                                        value.size / 1024 / 1024))
+            raise ValidationError(
+                _("Please keep filesize under {} MiB. Current filesize: {:10.2f} MiB.").format(
+                    max_upload_size, value.size / 1024 / 1024
+                )
+            )
+
     return check_file_size
 
 
 class RestrictedFileField(models.FileField):
-
     def __init__(self, *args, **kwargs):
         if "max_upload_size" in kwargs:
             self.max_upload_size = kwargs.pop("max_upload_size")
@@ -36,32 +42,33 @@ class RestrictedFileField(models.FileField):
         else:
             self.content_types = None
 
-        super(RestrictedFileField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.validators = [file_size_validator(self.max_upload_size)]
 
     def clean(self, *args, **kwargs):
-        data = super(RestrictedFileField, self).clean(*args, **kwargs)
+        data = super().clean(*args, **kwargs)
         f = data.file
         try:
             content_type = f.content_type
             if self.content_types is not None and content_type not in self.content_types:
-                raise ValidationError(_('Filetype not supported.'))
+                raise ValidationError(_("Filetype not supported."))
             if self.max_upload_size is not None and f._size > self.max_upload_size:
-                raise ValidationError(_('Please keep filesize under {}. '
-                                        'Current filesize: '
-                                        '{}').format(self.max_upload_size,
-                                                     f._size))
+                raise ValidationError(
+                    _("Please keep filesize under {}. Current filesize: {}").format(
+                        self.max_upload_size, f._size
+                    )
+                )
         except AttributeError as e:
             logger.warning(e)
         return data
 
 
 def cvt_to_decimal(f):
-    return Decimal(f).quantize(Decimal('.01'), rounding=ROUND_HALF_DOWN)
+    return Decimal(f).quantize(Decimal(".01"), rounding=ROUND_HALF_DOWN)
 
 
 def get_member(request):
-    if not hasattr(request.user, 'member'):
+    if not hasattr(request.user, "member"):
         return None
     else:
         return request.user.member
@@ -69,10 +76,10 @@ def get_member(request):
 
 def normalize_name(raw, nospaces=True, noumlaut=True):
     if noumlaut:
-        raw = raw.replace('ö', 'oe').replace('ä', 'ae').replace('ü', 'ue')
+        raw = raw.replace("ö", "oe").replace("ä", "ae").replace("ü", "ue")
     if nospaces:
-        raw = raw.replace(' ', '_')
-    return unicodedata.normalize('NFKD', raw).encode('ascii', 'ignore').decode('ascii')
+        raw = raw.replace(" ", "_")
+    return unicodedata.normalize("NFKD", raw).encode("ascii", "ignore").decode("ascii")
 
 
 def normalize_filename(filename, append_date=True, date=None):
@@ -80,20 +87,27 @@ def normalize_filename(filename, append_date=True, date=None):
         date = datetime.today()
     if date:
         filename = filename + "_" + date.strftime("%d_%m_%Y")
-    filename = filename.replace(' ', '_').replace('&', '').replace('/', '_')
+    filename = filename.replace(" ", "_").replace("&", "").replace("/", "_")
     # drop umlauts, accents etc.
-    return unicodedata.normalize('NFKD', filename).encode('ASCII', 'ignore').decode()
+    return unicodedata.normalize("NFKD", filename).encode("ASCII", "ignore").decode()
 
 
 def coming_midnight():
     base = timezone.now() + timezone.timedelta(days=1)
-    return timezone.datetime(year=base.year, month=base.month, day=base.day,
-                             hour=0, minute=0, second=0, microsecond=0,
-                             tzinfo=base.tzinfo)
+    return timezone.datetime(
+        year=base.year,
+        month=base.month,
+        day=base.day,
+        hour=0,
+        minute=0,
+        second=0,
+        microsecond=0,
+        tzinfo=base.tzinfo,
+    )
 
 
 def mondays_until_nth(n):
-    """ Returns a list of dates for the next n Mondays, starting from the next Monday.
+    """Returns a list of dates for the next n Mondays, starting from the next Monday.
     This functions aids in the generation of weekly schedules or reports."""
     today = datetime.today()
     next_monday = today + timedelta(days=(7 - today.weekday()) % 7 or 7)