diff --git a/resolvers/seen.py b/resolvers/seen.py
index b61a901..bfbc260 100644
--- a/resolvers/seen.py
+++ b/resolvers/seen.py
@@ -2,7 +2,7 @@ from sqlalchemy import and_
 from orm.notification import NotificationSeen
 from services.db import local_session
 from resolvers.model import Notification, NotificationSeenResult, NotificationReaction
-from typing import List
+
 import strawberry
 import logging
 import json
@@ -61,15 +61,35 @@ class Mutation:
             [shout_id, reply_to_id] = thread.split("::")
             with local_session() as session:
                 # TODO: handle new follower and new shout notifications
-                new_reaction_notifications = session.query(Notification).filter(Notification.action == "create", Notification.entity == "reaction", Notification.created_at > after).all()
-                removed_reaction_notifications = session.query(Notification).filter(Notification.action == "delete", Notification.entity == "reaction", Notification.created_at > after).all()
+                new_reaction_notifications = (
+                    session.query(Notification)
+                    .filter(
+                        Notification.action == "create",
+                        Notification.entity == "reaction",
+                        Notification.created_at > after,
+                    )
+                    .all()
+                )
+                removed_reaction_notifications = (
+                    session.query(Notification)
+                    .filter(
+                        Notification.action == "delete",
+                        Notification.entity == "reaction",
+                        Notification.created_at > after,
+                    )
+                    .all()
+                )
                 exclude = set([])
                 for nr in removed_reaction_notifications:
                     reaction: NotificationReaction = json.loads(nr.payload)
                     exclude.add(reaction.id)
                 for n in new_reaction_notifications:
                     reaction: NotificationReaction = json.loads(n.payload)
-                    if reaction.id not in exclude and str(reaction.shout) == str(shout_id) and str(reaction.reply_to) == str(reply_to_id):
+                    if (
+                        reaction.id not in exclude
+                        and str(reaction.shout) == str(shout_id)
+                        and str(reaction.reply_to) == str(reply_to_id)
+                    ):
                         try:
                             ns = NotificationSeen(notification=n.id, viewer=author_id)
                             session.add(ns)