diff --git a/bookwyrm/tests/importers/test_calibre_import.py b/bookwyrm/tests/importers/test_calibre_import.py
index 5257caa6..aff44a24 100644
--- a/bookwyrm/tests/importers/test_calibre_import.py
+++ b/bookwyrm/tests/importers/test_calibre_import.py
@@ -46,11 +46,15 @@ class CalibreImport(TestCase):
         )
         self.assertEqual(len(import_items), 1)
         self.assertEqual(import_items[0].index, 0)
-        self.assertEqual(import_items[0].normalized_data["title"], "That Ain't Witchcraft")
+        self.assertEqual(
+            import_items[0].normalized_data["title"], "That Ain't Witchcraft"
+        )
 
     def test_handle_imported_book(self, *_):
         """calibre import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.TO_READ).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.TO_READ
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(
diff --git a/bookwyrm/tests/importers/test_goodreads_import.py b/bookwyrm/tests/importers/test_goodreads_import.py
index 00c8b981..9d1c1908 100644
--- a/bookwyrm/tests/importers/test_goodreads_import.py
+++ b/bookwyrm/tests/importers/test_goodreads_import.py
@@ -84,7 +84,9 @@ class GoodreadsImport(TestCase):
 
     def test_handle_imported_book(self, *_):
         """goodreads import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.READ_FINISHED).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.READ_FINISHED
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(
diff --git a/bookwyrm/tests/importers/test_importer.py b/bookwyrm/tests/importers/test_importer.py
index 5d0b9b00..c12095a4 100644
--- a/bookwyrm/tests/importers/test_importer.py
+++ b/bookwyrm/tests/importers/test_importer.py
@@ -174,7 +174,9 @@ class GenericImporter(TestCase):
 
     def test_handle_imported_book(self, *_):
         """import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.READ_FINISHED).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.READ_FINISHED
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(
@@ -193,7 +195,9 @@ class GenericImporter(TestCase):
     def test_handle_imported_book_already_shelved(self, *_):
         """import added a book, this adds related connections"""
         with patch("bookwyrm.models.activitypub_mixin.broadcast_task.apply_async"):
-            shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.TO_READ).first()
+            shelf = self.local_user.shelf_set.filter(
+                identifier=models.Shelf.TO_READ
+            ).first()
             models.ShelfBook.objects.create(
                 shelf=shelf,
                 user=self.local_user,
@@ -217,12 +221,16 @@ class GenericImporter(TestCase):
             shelf.shelfbook_set.first().shelved_date, make_date(2020, 2, 2)
         )
         self.assertIsNone(
-            self.local_user.shelf_set.get(identifier=models.Shelf.READ_FINISHED).books.first()
+            self.local_user.shelf_set.get(
+                identifier=models.Shelf.READ_FINISHED
+            ).books.first()
         )
 
     def test_handle_import_twice(self, *_):
         """re-importing books"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.READ_FINISHED).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.READ_FINISHED
+        ).first()
         import_job = self.importer.create_job(
             self.local_user, self.csv, False, "public"
         )
diff --git a/bookwyrm/tests/importers/test_librarything_import.py b/bookwyrm/tests/importers/test_librarything_import.py
index e976027c..3994e8cd 100644
--- a/bookwyrm/tests/importers/test_librarything_import.py
+++ b/bookwyrm/tests/importers/test_librarything_import.py
@@ -93,7 +93,9 @@ class LibrarythingImport(TestCase):
 
     def test_handle_imported_book(self, *_):
         """librarything import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.READ_FINISHED).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.READ_FINISHED
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(
@@ -117,7 +119,9 @@ class LibrarythingImport(TestCase):
     def test_handle_imported_book_already_shelved(self, *_):
         """librarything import added a book, this adds related connections"""
         with patch("bookwyrm.models.activitypub_mixin.broadcast_task.apply_async"):
-            shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.TO_READ).first()
+            shelf = self.local_user.shelf_set.filter(
+                identifier=models.Shelf.TO_READ
+            ).first()
             models.ShelfBook.objects.create(
                 shelf=shelf, user=self.local_user, book=self.book
             )
@@ -135,7 +139,9 @@ class LibrarythingImport(TestCase):
         shelf.refresh_from_db()
         self.assertEqual(shelf.books.first(), self.book)
         self.assertIsNone(
-            self.local_user.shelf_set.get(identifier=models.Shelf.READ_FINISHED).books.first()
+            self.local_user.shelf_set.get(
+                identifier=models.Shelf.READ_FINISHED
+            ).books.first()
         )
 
         readthrough = models.ReadThrough.objects.get(user=self.local_user)
diff --git a/bookwyrm/tests/importers/test_openlibrary_import.py b/bookwyrm/tests/importers/test_openlibrary_import.py
index dbd177b8..28c10e50 100644
--- a/bookwyrm/tests/importers/test_openlibrary_import.py
+++ b/bookwyrm/tests/importers/test_openlibrary_import.py
@@ -70,7 +70,9 @@ class OpenLibraryImport(TestCase):
 
     def test_handle_imported_book(self, *_):
         """openlibrary import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.READING).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.READING
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(
diff --git a/bookwyrm/tests/importers/test_storygraph_import.py b/bookwyrm/tests/importers/test_storygraph_import.py
index 69788d60..afff0b21 100644
--- a/bookwyrm/tests/importers/test_storygraph_import.py
+++ b/bookwyrm/tests/importers/test_storygraph_import.py
@@ -62,7 +62,9 @@ class StorygraphImport(TestCase):
 
     def test_handle_imported_book(self, *_):
         """storygraph import added a book, this adds related connections"""
-        shelf = self.local_user.shelf_set.filter(identifier=models.Shelf.TO_READ).first()
+        shelf = self.local_user.shelf_set.filter(
+            identifier=models.Shelf.TO_READ
+        ).first()
         self.assertIsNone(shelf.books.first())
 
         import_job = self.importer.create_job(