split tasks

tasks.py

@@ -8,9 +8,16 @@ from celery.task import periodic_task
 def subtitles_user(**kwargs):
     import annotation.models
     from user.models import User
+    try:
         u = User.objects.get(username='subtitles')
+    except User.DoesNotExist:
+        print('subtitles user does not exist, unable to move subtitles')
+        return
     annotation.models.Annotation.objects.filter(layer='subtitles').exclude(user=u).update(user=u)
 
+@periodic_task(run_every=timedelta(hours=1), queue='encoding')
+def update_ontology(**kwargs):
+    import annotation.models
     t = datetime.now() - annotation.models.Annotation.objects.all().order_by('-created')[0].created
     if t < timedelta(hours=1):
         try: