old_contents: from django.conf.urls import url
  
  from .user_api import UserCreateView
  
  
  urlpatterns += [
      url(r'^user$', UserCreateView.as_view())
  ]
  
new_contents: from django.conf.urls import url
  
  from .user_api import UserCreateView
  
  urlpatterns = [
      url(r'^user$', UserCreateView.as_view())
  ]
  
subject: fix urls