old_contents: from django.conf.urls import url
  
  from . import views
  
  app_name = 'django_lightweight_queue'
  
  urlpatterns = (
      url(r'^debug/django-lightweight-queue/debug-run$', views.debug_run, name='debug-run'),
  )
  
new_contents: from django.urls import re_path
  
  from . import views
  
  app_name = 'django_lightweight_queue'
  
  urlpatterns = (
      re_path(r'^debug/django-lightweight-queue/debug-run$', views.debug_run, name='debug-run'),
  )
  
subject: fix django 4 regression