style: trailing spaces and doble line break erased

lms/djangoapps/instructor/views/api.py

@@ -3052,23 +3052,21 @@ def post(self, request, course_id):
         if not serializer_data.is_valid():
             return JsonResponse({'error': 'All fields must be filled out'}, status=400)
 
-        
+
         student = serializer_data.validated_data.get('student')
         if not student:
             response_payload = {
                 'error': f'Could not find student matching identifier: {request.data.get("student")}'
             }
             return JsonResponse(response_payload, status=404)
-        
+
         due_datetime = serializer_data.validated_data.get('due_datetime')
         try:
             due_date = parse_datetime(due_datetime)
         except DashboardError:
             return JsonResponse({'error': 'The extension due date and time format is incorrect'}, status=400)
-
-
-        course = get_course_by_id(CourseKey.from_string(course_id))
 
+        course = get_course_by_id(CourseKey.from_string(course_id))
         unit = find_unit(course, serializer_data.validated_data.get('url'))
         reason = strip_tags(serializer_data.validated_data.get('reason', ''))
         try: