diff --git a/server/vbv_lernwelt/assignment/creators/create_assignments.py b/server/vbv_lernwelt/assignment/creators/create_assignments.py
index a8ce50a7..8c74555d 100644
--- a/server/vbv_lernwelt/assignment/creators/create_assignments.py
+++ b/server/vbv_lernwelt/assignment/creators/create_assignments.py
@@ -1,7 +1,3 @@
-from wagtail.blocks import StreamValue
-from wagtail.blocks.list_block import ListBlock, ListValue
-from wagtail.rich_text import RichText
-
 from vbv_lernwelt.assignment.models import (
     AssignmentListPage,
     AssignmentType,
@@ -24,6 +20,9 @@ from vbv_lernwelt.course.consts import (
     COURSE_VERSICHERUNGSVERMITTLERIN_ID,
 )
 from vbv_lernwelt.course.models import CoursePage
+from wagtail.blocks import StreamValue
+from wagtail.blocks.list_block import ListBlock, ListValue
+from wagtail.rich_text import RichText
 
 
 def create_uk_fahrzeug_casework(course_id=COURSE_UK):
diff --git a/server/vbv_lernwelt/course/creators/test_course.py b/server/vbv_lernwelt/course/creators/test_course.py
index 0131722c..703a8ab9 100644
--- a/server/vbv_lernwelt/course/creators/test_course.py
+++ b/server/vbv_lernwelt/course/creators/test_course.py
@@ -180,8 +180,12 @@ def create_course_session_attendance_course(course_session, course):
     )
     random_week = random.randint(1, 26)
 
-    casc.due_date.start = timezone.make_aware(datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week))
-    casc.due_date.end = timezone.make_aware(datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week))
+    casc.due_date.start = timezone.make_aware(
+        datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week)
+    )
+    casc.due_date.end = timezone.make_aware(
+        datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week)
+    )
     casc.due_date.save()
     return casc
 
diff --git a/server/vbv_lernwelt/course/management/commands/create_default_courses.py b/server/vbv_lernwelt/course/management/commands/create_default_courses.py
index f289367a..ec204b8d 100644
--- a/server/vbv_lernwelt/course/management/commands/create_default_courses.py
+++ b/server/vbv_lernwelt/course/management/commands/create_default_courses.py
@@ -263,8 +263,12 @@ def create_course_uk_de():
 
     # TODO: create dates schlauer
     random_week = random.randint(1, 26)
-    csac.due_date.start = timezone.make_aware(datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week))
-    csac.due_date.end = timezone.make_aware(datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week))
+    csac.due_date.start = timezone.make_aware(
+        datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week)
+    )
+    csac.due_date.end = timezone.make_aware(
+        datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week)
+    )
     csac.due_date.save()
 
     # figma demo users and data
diff --git a/server/vbv_lernwelt/duedate/factories.py b/server/vbv_lernwelt/duedate/factories.py
index f83c4c98..724f9fc8 100644
--- a/server/vbv_lernwelt/duedate/factories.py
+++ b/server/vbv_lernwelt/duedate/factories.py
@@ -5,9 +5,10 @@ from django.utils import timezone
 from factory import SubFactory
 from factory.django import DjangoModelFactory
 
-from .models import DueDate
 from ..course_session.factories import CourseSessionFactory
 
+from .models import DueDate
+
 logger = structlog.get_logger(__name__)
 
 
diff --git a/server/vbv_lernwelt/duedate/migrations/0007_auto_20230703_1741.py b/server/vbv_lernwelt/duedate/migrations/0007_auto_20230703_1741.py
index c9f5963d..05c6dace 100644
--- a/server/vbv_lernwelt/duedate/migrations/0007_auto_20230703_1741.py
+++ b/server/vbv_lernwelt/duedate/migrations/0007_auto_20230703_1741.py
@@ -1,36 +1,42 @@
 # Generated by Django 3.2.13 on 2023-07-03 15:41
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('course', '0006_remove_coursesession_assignment_details_list'),
-        ('duedate', '0006_auto_20230627_1553'),
+        ("course", "0006_remove_coursesession_assignment_details_list"),
+        ("duedate", "0006_auto_20230627_1553"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='duedate',
-            name='course_session',
-            field=models.ForeignKey(blank=True, default=1, on_delete=django.db.models.deletion.CASCADE, related_name='duedates', to='course.coursesession'),
+            model_name="duedate",
+            name="course_session",
+            field=models.ForeignKey(
+                blank=True,
+                default=1,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="duedates",
+                to="course.coursesession",
+            ),
             preserve_default=False,
         ),
         migrations.AlterField(
-            model_name='duedate',
-            name='description',
-            field=models.CharField(default='', max_length=1024),
+            model_name="duedate",
+            name="description",
+            field=models.CharField(default="", max_length=1024),
         ),
         migrations.AlterField(
-            model_name='duedate',
-            name='learning_content_description',
-            field=models.CharField(default='', max_length=1024),
+            model_name="duedate",
+            name="learning_content_description",
+            field=models.CharField(default="", max_length=1024),
         ),
         migrations.AlterField(
-            model_name='duedate',
-            name='url',
-            field=models.URLField(blank=True, default='', max_length=1024),
+            model_name="duedate",
+            name="url",
+            field=models.URLField(blank=True, default="", max_length=1024),
         ),
     ]
diff --git a/server/vbv_lernwelt/duedate/models.py b/server/vbv_lernwelt/duedate/models.py
index 9db1981b..153402d0 100644
--- a/server/vbv_lernwelt/duedate/models.py
+++ b/server/vbv_lernwelt/duedate/models.py
@@ -14,9 +14,7 @@ class DueDate(models.Model):
     end = models.DateTimeField(db_index=True, null=True)
     # TODO: Welcher Default Wert ist hier sinnvoll?
     title = models.CharField(default=_("Termin"), max_length=1024)
-    learning_content_description = models.CharField(
-        default="", max_length=1024
-    )
+    learning_content_description = models.CharField(default="", max_length=1024)
     description = models.CharField(default="", max_length=1024)
     url = models.URLField(default="", blank=True, max_length=1024)
     course_session = models.ForeignKey(
@@ -31,7 +29,9 @@ class DueDate(models.Model):
     def Meta(self):
         ordering = ["start", "end"]
         verbose_name = _("Termin")
-        help = "Set only the end date if you want to create a deadline without a duration."
+        help = (
+            "Set only the end date if you want to create a deadline without a duration."
+        )
 
     def __str__(self):
         start_str = self.start.strftime("%Y-%m-%d %H:%M") if self.start else ""