Run django-upgrade manually

project/example_app/admin.py

@@ -4,10 +4,14 @@
 from .models import Blind
 
 
+@admin.register(Blind)
 class BlindAdmin(admin.ModelAdmin):
     list_display = ('desc', 'thumbnail', 'name', 'child_safe')
     list_editable = ('name', 'child_safe')
 
+    @admin.display(
+        description='Photo'
+    )
     def thumbnail(self, obj):
         try:
             img_tag = '<img src="%s" width="200px"/>' % obj.photo.url
@@ -16,20 +20,14 @@ def thumbnail(self, obj):
         url = self._blind_url(obj)
         return f'<a href="{url}">{img_tag}</a>'
 
-    thumbnail.short_description = 'Photo'
-    thumbnail.allow_tags = True
-
     def _blind_url(self, obj):
         url = reverse('admin:example_app_blind_change', args=(obj.id, ))
         return url
 
+    @admin.display(
+        description='Blind'
+    )
     def desc(self, obj):
         desc = str(obj)
         url = self._blind_url(obj)
         return f'<a href="{url}">{desc}</a>'
-
-    desc.short_description = 'Blind'
-    desc.allow_tags = True
-
-
-admin.site.register(Blind, BlindAdmin)

project/tests/urlconf_without_silk.py

@@ -1,8 +1,9 @@
-from django.urls import include, re_path
+from django.urls import include, path
+
 
 urlpatterns = [
-    re_path(
-        r'^example_app/',
+    path(
+        'example_app/',
         include('example_app.urls', namespace='example_app')
     ),
 ]