diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/Coursebook.vue b/aleksis/apps/alsijil/frontend/components/coursebook/Coursebook.vue
index 86b2a5fa258db6f0d4e4e077219e65105fde2816..11a0c85c853d0d7a175017d88c3bf8a21df936a8 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/Coursebook.vue
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/Coursebook.vue
@@ -58,7 +58,9 @@
       <template #no-results>
         <CoursebookEmptyMessage icon="mdi-book-alert-outline">
           {{
-            $t("alsijil.coursebook.no_results", { search: $refs.iterator.search })
+            $t("alsijil.coursebook.no_results", {
+              search: $refs.iterator.search,
+            })
           }}
         </CoursebookEmptyMessage>
       </template>
diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationDialog.vue b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationDialog.vue
index 88672264aea7a128930d4b912e55b5aab2dd0a11..2a8734d8c8574cfa73857a60319ac2637678b9ff 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationDialog.vue
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationDialog.vue
@@ -25,32 +25,31 @@
       </div>
     </template>
     <template #content>
-    <absence-creation-form v-if="form"
-      :persons="persons"
-      :start-date="startDate"
-      :end-date="endDate"
-      :comment="comment"
-      :absence-reason="absenceReason"
-      @valid="formValid = $event"
-      @persons="persons = $event"
-      @start-date="startDate = $event"
-      @end-date="endDate = $event"
-      @comment="comment = $event"
-      @absence-reason="absenceReason = $event"
-    />
-    <absence-creation-summary v-else
-      :persons="persons"
-      :start-date="startDate"
-      :end-date="endDate"
-      @loading="handleLoading"
-    />
+      <absence-creation-form
+        v-if="form"
+        :persons="persons"
+        :start-date="startDate"
+        :end-date="endDate"
+        :comment="comment"
+        :absence-reason="absenceReason"
+        @valid="formValid = $event"
+        @persons="persons = $event"
+        @start-date="startDate = $event"
+        @end-date="endDate = $event"
+        @comment="comment = $event"
+        @absence-reason="absenceReason = $event"
+      />
+      <absence-creation-summary
+        v-else
+        :persons="persons"
+        :start-date="startDate"
+        :end-date="endDate"
+        @loading="handleLoading"
+      />
     </template>
     <template #actions>
       <!-- secondary -->
-      <cancel-button
-        @click="cancel"
-        :disabled="loading"
-      />
+      <cancel-button @click="cancel" :disabled="loading" />
       <!-- primary -->
       <save-button
         v-if="form"
@@ -116,18 +115,19 @@ export default {
     },
     confirm() {
       this.handleLoading(true);
-      this.$apollo.mutate( {
-        mutation: createAbsencesForPersons,
-        variables: {
-          persons: this.persons.map((p) => p.id),
-          start: this.startDate,
-          end: this.endDate,
-          comment: this.comment,
-          reason: this.absenceReason,
-        },
-      })
+      this.$apollo
+        .mutate({
+          mutation: createAbsencesForPersons,
+          variables: {
+            persons: this.persons.map((p) => p.id),
+            start: this.startDate,
+            end: this.endDate,
+            comment: this.comment,
+            reason: this.absenceReason,
+          },
+        })
         .then(() => {
-          this.clearForm()
+          this.clearForm();
           this.cancel();
           this.$toastSuccess("alsijil.coursebook.absences.success");
         })
diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationForm.vue b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationForm.vue
index f8b20a0baac0a004f01228b52f9a401cd551e4d1..c66bfc93bb48f801407246a5c0a824fd8d311cb0 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationForm.vue
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationForm.vue
@@ -16,11 +16,7 @@
         </div>
       </v-row>
       <v-row>
-        <v-col
-          cols="12"
-          :sm="6"
-          class="pl-0"
-          >
+        <v-col cols="12" :sm="6" class="pl-0">
           <div aria-required="true">
             <date-field
               :label="$t('forms.labels.start')"
@@ -31,11 +27,7 @@
             />
           </div>
         </v-col>
-        <v-col
-          cols="12"
-          :sm="6"
-          class="pr-0"
-          >
+        <v-col cols="12" :sm="6" class="pr-0">
           <div aria-required="true">
             <date-field
               :label="$t('forms.labels.end')"
@@ -78,7 +70,14 @@ export default {
     AbsenceReasonGroupSelect,
     DateField,
   },
-  emits: ["valid", "persons", "start-date", "end-date", "comment", "absence-reason"],
+  emits: [
+    "valid",
+    "persons",
+    "start-date",
+    "end-date",
+    "comment",
+    "absence-reason",
+  ],
   apollo: {
     // TODO: Query currently returns all persons. But should return
     // only persons the current user can create ParticipationStati and
@@ -109,9 +108,7 @@ export default {
   },
   data() {
     return {
-      rules: [
-          (value) => value.length > 0,
-      ],
+      rules: [(value) => value.length > 0],
     };
   },
 };
diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationSummary.vue b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationSummary.vue
index 1f00a767e38a0665945e0db37dbd4bb90c743716..429ae693e580ea8d1dd6f025e37dc9ee76d81cce 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationSummary.vue
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/absences/AbsenceCreationSummary.vue
@@ -16,10 +16,7 @@
     >
       <template #default="{ items }">
         <v-expansion-panels>
-          <v-expansion-panel
-            v-for="person in items"
-            :key="person.id"
-          >
+          <v-expansion-panel v-for="person in items" :key="person.id">
             <v-expansion-panel-header>
               <div>
                 {{ persons.find((p) => p.id === person.id).fullName }}
@@ -32,20 +29,20 @@
             </v-expansion-panel-header>
             <v-expansion-panel-content>
               <v-divider />
-              <v-list-item
-                v-for="lesson in person.lessons"
-                class="px-0"
-              >
+              <v-list-item v-for="lesson in person.lessons" class="px-0">
                 <!-- TODO: We should extract this display & share it -->
-                <time  :datetime="lesson.datetimeStart" class="pr-2 text-no-wrap">
+                <time
+                  :datetime="lesson.datetimeStart"
+                  class="pr-2 text-no-wrap"
+                >
                   {{ $d(toDateTime(lesson.datetimeStart), "shortWithWeekday") }}
                 </time>
                 <span>(</span>
-                <time  :datetime="lesson.datetimeStart" class="text-no-wrap">
+                <time :datetime="lesson.datetimeStart" class="text-no-wrap">
                   {{ $d(toDateTime(lesson.datetimeStart), "shortTime") }}
                 </time>
                 <span>-</span>
-                <time  :datetime="lesson.datetimeEnd" class="text-no-wrap">
+                <time :datetime="lesson.datetimeEnd" class="text-no-wrap">
                   {{ $d(toDateTime(lesson.datetimeEnd), "shortTime") }}
                 </time>
                 <span>)</span>
@@ -53,9 +50,7 @@
                 <div class="pr-2">
                   {{ lesson.course.name }}
                 </div>
-                <subject-chip
-                  :subject="lesson.subject"
-                />
+                <subject-chip :subject="lesson.subject" />
               </v-list-item>
             </v-expansion-panel-content>
           </v-expansion-panel>
diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/absences/absenceCreation.graphql b/aleksis/apps/alsijil/frontend/components/coursebook/absences/absenceCreation.graphql
index 1b41a76a3ceac242f4e065d5504600e324a682c6..683ba5c99315cb62d83d8f6a803be90122277671 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/absences/absenceCreation.graphql
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/absences/absenceCreation.graphql
@@ -6,16 +6,8 @@ query persons {
   }
 }
 
-query lessonsForPersons(
-  $persons: [ID]!
-  $start: Date!
-  $end: Date!
-) {
-  items: lessonsForPersons(
-    persons: $persons
-    start: $start
-    end: $end
-  ) {
+query lessonsForPersons($persons: [ID]!, $start: Date!, $end: Date!) {
+  items: lessonsForPersons(persons: $persons, start: $start, end: $end) {
     id
     lessons {
       id
@@ -51,6 +43,6 @@ mutation createAbsencesForPersons(
     comment: $comment
     reason: $reason
   ) {
-     ok
-   }
+    ok
+  }
 }
diff --git a/aleksis/apps/alsijil/models.py b/aleksis/apps/alsijil/models.py
index 62bb12542db0a739fc39cf4a5b77f60a331463ee..9e68ccd06773dc8b0f6ee65ccd16c81319b94a8b 100644
--- a/aleksis/apps/alsijil/models.py
+++ b/aleksis/apps/alsijil/models.py
@@ -4,7 +4,6 @@ from urllib.parse import urlparse
 
 from django.contrib.auth.models import User
 from django.core.exceptions import PermissionDenied
-from django.core.exceptions import PermissionDenied
 from django.db import models
 from django.db.models import QuerySet
 from django.db.models.constraints import CheckConstraint
@@ -13,9 +12,7 @@ from django.urls import reverse
 from django.utils import timezone
 from django.utils.formats import date_format
 from django.utils.timezone import localdate, localtime, now
-from django.utils.timezone import localdate, localtime
 from django.utils.translation import gettext_lazy as _
-from django.contrib.auth.models import User
 
 from calendarweek import CalendarWeek
 from colorfield.fields import ColorField
diff --git a/aleksis/apps/alsijil/schema/__init__.py b/aleksis/apps/alsijil/schema/__init__.py
index e38272d256fb9696d699c67e027443fea94043ae..397834be020fc5efd2af3636e93985c045d11a0a 100644
--- a/aleksis/apps/alsijil/schema/__init__.py
+++ b/aleksis/apps/alsijil/schema/__init__.py
@@ -12,9 +12,11 @@ from aleksis.core.models import Group, Person
 from aleksis.core.schema.base import FilterOrderList
 from aleksis.core.schema.group import GroupType
 from aleksis.core.util.core_helpers import has_person
-from aleksis.apps.chronos.models import LessonEvent
 
 from ..models import Documentation
+from .absences import (
+    AbsencesForPersonsCreateMutation,
+)
 from .documentation import (
     DocumentationBatchCreateOrUpdateMutation,
     DocumentationType,
@@ -23,10 +25,6 @@ from .documentation import (
 )
 from .participation_status import ParticipationStatusBatchPatchMutation
 
-from .absences import (
-    LessonsForPersonType,
-    AbsencesForPersonsCreateMutation,
-)
 
 class Query(graphene.ObjectType):
     documentations = FilterOrderList(DocumentationType)
@@ -149,8 +147,6 @@ class Query(graphene.ObjectType):
             | Q(groups__parent_groups__owners=person)
         )
 
-
-
     @staticmethod
     def resolve_lessons_for_persons(
         root,
@@ -160,8 +156,7 @@ class Query(graphene.ObjectType):
         end,
         **kwargs,
     ):
-        """Resolve all lesson events for each person in timeframe start to end.
-        """
+        """Resolve all lesson events for each person in timeframe start to end."""
         lessons_for_person = []
         for person in persons:
             docs, dummies = Documentation.get_documentations_for_person(
@@ -170,12 +165,7 @@ class Query(graphene.ObjectType):
                 datetime.combine(end, datetime.max.time()),
             )
 
-            lessons_for_person.append(
-                LessonsForPersonType(
-                    id=person,
-                    lessons=docs + dummies
-                )
-            )
+            lessons_for_person.append(LessonsForPersonType(id=person, lessons=docs + dummies))
 
         return lessons_for_person
 
diff --git a/aleksis/apps/alsijil/schema/absences.py b/aleksis/apps/alsijil/schema/absences.py
index 5a4561a208a5ab4ccd1cddb73eab43797026fd77..ae194435024511bac1eb06731cbf7b2013597570 100644
--- a/aleksis/apps/alsijil/schema/absences.py
+++ b/aleksis/apps/alsijil/schema/absences.py
@@ -1,15 +1,18 @@
-import graphene
 from datetime import datetime
 
+import graphene
+
 from aleksis.apps.kolego.models import Absence
 
-from .documentation import DocumentationType
 from ..models import Documentation, ParticipationStatus
+from .documentation import DocumentationType
+
 
 class LessonsForPersonType(graphene.ObjectType):
     id = graphene.ID()  # noqa
     lessons = graphene.List(DocumentationType)
 
+
 class AbsencesForPersonsCreateMutation(graphene.Mutation):
     class Arguments:
         persons = graphene.List(graphene.ID, required=True)