code is now clean but still not working

passbook/core/migrations/0001_initial.py

@@ -1,12 +1,13 @@
 # Generated by Django 2.1.3 on 2018-11-16 10:21
 
-from django.conf import settings
+import uuid
+
 import django.contrib.auth.models
 import django.contrib.auth.validators
-from django.db import migrations, models
 import django.db.models.deletion
 import django.utils.timezone
-import uuid
+from django.conf import settings
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):