Fixes black regression

bookwyrm/templatetags/shelf_tags.py

@@ -36,8 +36,7 @@ def get_next_shelf(current_shelf):
 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(
@@ -49,9 +48,7 @@ def active_shelf(context, book):
         user,
         book,
         timeout=15552000,
-        )
-        or {"book": book}
-    )
+    ) or {"book": book}
 
 
 @register.simple_tag(takes_context=False)