pep guidelines

bookshelf/urls.py

@@ -7,4 +7,4 @@ urlpatterns = [
     path('books/<int:pk>/', BookDetailView.as_view()),
     path('authors/', AuthorListView.as_view()),
     path('authors/<int:pk>/', AuthorDetailView.as_view()),
-]
\ No newline at end of file
+]

bookshelf/views.py

@@ -29,6 +29,7 @@ class AuthorListView(generic.ListView):
     queryset = Author.objects.all()
     context_object_name = 'authors'
 
+
 class AuthorDetailView(generic.DetailView):
     model = Author
     template_name = 'bookshelf/author_detail.html'