old_contents: from django.urls import path, re_path
  
  # This version 1.x way of defining urls is deprecated in Django 3.1, but still works
  from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      path("foo/", views.foo),  # $routeSetup="foo/"
      # TODO: Doesn't include standard `$` to mark end of string, due to problems with
      # inline expectation tests (which thinks the `$` would mark the beginning of a new
      # line)
      re_path(r"^ba[rz]/", views.bar_baz),  # $routeSetup="^ba[rz]/"
      url(r"^deprecated/", views.deprecated),  # $routeSetup="^deprecated/"
  
      path("basic-view-handler/", views.MyBasicViewHandler.as_view()),  # $routeSetup="basic-view-handler/"
      path("custom-inheritance-view-handler/", views.MyViewHandlerWithCustomInheritance.as_view()),  # $routeSetup="custom-inheritance-view-handler/"
  
      path("CustomRedirectView/<foo>", views.CustomRedirectView.as_view()),  # $routeSetup="CustomRedirectView/<foo>"
      path("CustomRedirectView2/<foo>", views.CustomRedirectView2.as_view()),  # $routeSetup="CustomRedirectView2/<foo>"
  ]
  
new_contents: from django.urls import path, re_path
  
  from . import views
  
  urlpatterns = [
      path("foo/", views.foo),  # $routeSetup="foo/"
      # TODO: Doesn't include standard `$` to mark end of string, due to problems with
      # inline expectation tests (which thinks the `$` would mark the beginning of a new
      # line)
      re_path(r"^ba[rz]/", views.bar_baz),  # $routeSetup="^ba[rz]/"
  
      path("basic-view-handler/", views.MyBasicViewHandler.as_view()),  # $routeSetup="basic-view-handler/"
      path("custom-inheritance-view-handler/", views.MyViewHandlerWithCustomInheritance.as_view()),  # $routeSetup="custom-inheritance-view-handler/"
  
      path("CustomRedirectView/<foo>", views.CustomRedirectView.as_view()),  # $routeSetup="CustomRedirectView/<foo>"
      path("CustomRedirectView2/<foo>", views.CustomRedirectView2.as_view()),  # $routeSetup="CustomRedirectView2/<foo>"
  ]
  
  from django import __version__ as django_version
  
  if django_version[0] == "3":
      # This version 1.x way of defining urls is deprecated in Django 3.1, but still works.
      # However, it is removed in Django 4.0, so we need this guard to make our code runnable
      from django.conf.urls import url
  
      old_urlpatterns = urlpatterns
  
      # we need this assignment to get our logic working... maybe it should be more
      # sophisticated?
      urlpatterns = [
          url(r"^deprecated/", views.deprecated),  # $routeSetup="^deprecated/"
      ]
  
      urlpatterns += old_urlpatterns
  
subject: Handle django v4 as well in tests