Reformat

aleksis/apps/chronos/models.py

 # flake8: noqa: DJ01
 from __future__ import annotations
 
-import os
 import itertools
+import os
 from datetime import date, datetime, time, timedelta
 from itertools import chain
 from typing import Any, Dict, Iterable, Iterator, List, Optional, Tuple, Union
@@ -1414,7 +1414,7 @@ class LessonEvent(CalendarEvent):
 
     @property
     def teacher_names(self: "LessonEvent") -> str:
-        return ", ".join([t.full_name    for t in self.teachers.all()])
+        return ", ".join([t.full_name for t in self.teachers.all()])
 
     @property
     def room_names(self: "LessonEvent") -> str:
@@ -1426,11 +1426,7 @@ class LessonEvent(CalendarEvent):
         if reference_object.title:
             return reference_object.title
         elif reference_object.subject:
-            return (
-                reference_object.subject.name
-                + " · "
-                + reference_object.group_names
-            )
+            return reference_object.subject.name + " · " + reference_object.group_names
 
         return _("Lesson")
 
@@ -1457,7 +1453,9 @@ class LessonEvent(CalendarEvent):
     def value_attendee(cls, reference_object: "LessonEvent") -> str:
         """Get the attendees of the event."""
         # FIXME: Permissions
-        attendees = [t.get_vcal_address(role="CHAIR") for t in reference_object.teachers.all()] + [g.get_vcal_address(role="REQ-PARTICIPANT") for g in reference_object.all_members]
+        attendees = [t.get_vcal_address(role="CHAIR") for t in reference_object.teachers.all()] + [
+            g.get_vcal_address(role="REQ-PARTICIPANT") for g in reference_object.all_members
+        ]
         return [a for a in attendees if a]
 
     @classmethod
@@ -1484,7 +1482,6 @@ class SupervisionEvent(LessonEvent):
     name = "supervision"
     verbose_name = _("Supervisions")
 
-
     @classmethod
     def value_title(cls, reference_object: "LessonEvent") -> str:
         """Get the title of the event."""
@@ -1493,4 +1490,6 @@ class SupervisionEvent(LessonEvent):
 
     @classmethod
     def value_description(cls, reference_object: "LessonEvent") -> str:
-        return render_to_string("chronos/supervision_event_description.txt", {"event": reference_object})
+        return render_to_string(
\ No newline at end of file
+            "chronos/supervision_event_description.txt", {"event": reference_object}
+        )