old_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^', views.index, name='refresh'),
  ]
new_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.index, name='refresh'),
  ]
  
subject: edit urls for compareprice