Fixes black regression

bookwyrm/templatetags/shelf_tags.py

@@ -36,22 +36,19 @@ 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(
-            f"active_shelf-{user.id}-{book.id}",
-            lambda u, b: (
-                models.ShelfBook.objects.filter(
-                    shelf__user=u,
-                    book__parent_work__editions=b,
-                ).first()
-                or False
-            ),
-            user,
-            book,
-            timeout=15552000,
-        )
-        or {"book": book}
-    )
+    return cache.get_or_set(
+        f"active_shelf-{user.id}-{book.id}",
+        lambda u, b: (
+            models.ShelfBook.objects.filter(
+                shelf__user=u,
+                book__parent_work__editions=b,
+            ).first()
+            or False
+        ),
+        user,
+        book,
+        timeout=15552000,
+    ) or {"book": book}
 
 
 @register.simple_tag(takes_context=False)