diff --git a/bookwyrm/book_search.py b/bookwyrm/book_search.py
index b3e66cdd6..669b7d377 100644
--- a/bookwyrm/book_search.py
+++ b/bookwyrm/book_search.py
@@ -14,7 +14,6 @@ from bookwyrm import connectors
 from bookwyrm.settings import MEDIA_FULL_URL
 
 
-
 @overload
 def search(
     query: str,
@@ -44,7 +43,7 @@ def search(
     min_confidence: float = 0,
     filters: Optional[list[Any]] = None,
     return_first: bool = False,
-    books: Optional[QuerySet[models.Edition]] = None
+    books: Optional[QuerySet[models.Edition]] = None,
 ) -> Union[Optional[models.Edition], QuerySet[models.Edition]]:
     """search your local database"""
     filters = filters or []
@@ -56,7 +55,9 @@ def search(
     # first, try searching unique identifiers
     # unique identifiers never have spaces, title/author usually do
     if not " " in query:
-        results = search_identifiers(query, *filters, return_first=return_first, books=books)
+        results = search_identifiers(
+            query, *filters, return_first=return_first, books=books
+        )
 
     # if there were no identifier results...
     if not results:
@@ -66,6 +67,7 @@ def search(
         )
     return results
 
+
 def isbn_search(query):
     """search your local database"""
     if not query:
@@ -99,10 +101,17 @@ def format_search_result(search_result):
 
 
 def search_identifiers(
-    query, *filters, return_first=False, books=None,
+    query,
+    *filters,
+    return_first=False,
+    books=None,
 ) -> Union[Optional[models.Edition], QuerySet[models.Edition]]:
+    """search Editions by deduplication fields
+
+    Best for cases when we can assume someone is searching for an exact match on
+    commonly unique data identifiers like isbn or specific library ids.
+    """
     books = books or models.Edition.objects
-    """tries remote_id, isbn; defined as dedupe fields on the model"""
     if connectors.maybe_isbn(query):
         # Oh did you think the 'S' in ISBN stood for 'standard'?
         normalized_isbn = query.strip().upper().rjust(10, "0")
diff --git a/bookwyrm/views/shelf/shelf.py b/bookwyrm/views/shelf/shelf.py
index aad90da82..0617fcc56 100644
--- a/bookwyrm/views/shelf/shelf.py
+++ b/bookwyrm/views/shelf/shelf.py
@@ -1,7 +1,7 @@
 """ shelf views """
 from collections import namedtuple
 
-from django.db.models import OuterRef, Subquery, F, Max, QuerySet
+from django.db.models import OuterRef, Subquery, F, Max
 from django.contrib.auth.decorators import login_required
 from django.core.paginator import Paginator
 from django.http import HttpResponseBadRequest
@@ -17,10 +17,12 @@ from bookwyrm.settings import PAGE_LENGTH
 from bookwyrm.views.helpers import is_api_request, get_user_from_username
 from bookwyrm.book_search import search
 
+
 # pylint: disable=no-self-use
 class Shelf(View):
     """shelf page"""
 
+    # pylint: disable=R0914
     def get(self, request, username, shelf_identifier=None):
         """display a shelf"""
         user = get_user_from_username(request.user, username)
@@ -45,10 +47,14 @@ class Shelf(View):
                 "Shelf", ("identifier", "name", "user", "books", "privacy")
             )
 
-            books = models.Edition.viewer_aware_objects(request.user).filter(
-                # privacy is ensured because the shelves are already filtered above
-                shelfbook__shelf__in=shelves
-                ).distinct()
+            books = (
+                models.Edition.viewer_aware_objects(request.user)
+                .filter(
+                    # privacy is ensured because the shelves are already filtered above
+                    shelfbook__shelf__in=shelves
+                )
+                .distinct()
+            )
 
             shelf = FakeShelf("all", _("All books"), user, books, "public")
 
@@ -106,7 +112,7 @@ class Shelf(View):
             "page_range": paginated.get_elided_page_range(
                 page.number, on_each_side=2, on_ends=1
             ),
-            "shelves_search_query": shelves_search_query
+            "shelves_search_query": shelves_search_query,
         }
 
         return TemplateResponse(request, "shelf/shelf.html", data)