python formatting

bookwyrm/templatetags/bookwyrm_tags.py

@@ -132,7 +132,8 @@ def related_status(notification):
 def active_shelf(context, book):
     """check what shelf a user has a book on, if any"""
     user = context["request"].user
-    return cache.get_or_set(
+    return (
+        cache.get_or_set(
             f"active_shelf-{user.id}-{book.id}",
             lambda u, b: (
                 models.ShelfBook.objects.filter(
@@ -143,7 +144,9 @@ def active_shelf(context, book):
             user,
             book,
             timeout=15552000,
-    ) or {"book": book}
+        )
+        or {"book": book}
+    )
 
 
 @register.simple_tag(takes_context=False)