old_contents: """library URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.10/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Import the include() function: from django.conf.urls import url, include
      2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
  """
  from django.conf.urls import url, include
  from django.contrib import admin
  
  from .views import homepage, contactus
  from users.views import (login_view, register_view, logout_view, profile)
  
  urlpatterns = [
      url(r'^$', homepage, name='index'),
      url(r'^register/', register_view, name='register'),
      url(r'^login/', login_view, name='login'),
      url(r'^logout/', logout_view, name='logout'),
      url(r'^u/', include('users.urls', namespace="users")),
      url(r'^admin/', admin.site.urls),
      url(r'^books/', include('books.urls', namespace='books')) ,
      url(r'^staff/', include('staff.urls', namespace='staff')),
      url(r'^contact/', contactus, name='contact'),
      url(r'^ratings/', include('star_ratings.urls', namespace='ratings', app_name='ratings')),
  
      # API views
      url(r'^api/book/', include('books.api.urls', namespace='book-api')),
      url(r'^api/users/', include('users.api.urls', namespace='users-api')),
  ]
  
new_contents: """library URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.10/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Import the include() function: from django.conf.urls import url, include
      2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
  """
  from django.conf.urls import url, include
  from django.contrib import admin
  
  from .views import homepage, contactus
  from users.views import (login_view, register_view, logout_view, profile)
  
  urlpatterns = [
      url(r'^$', homepage, name='index'),
      url(r'^register/', register_view, name='register'),
      url(r'^login/', login_view, name='login'),
      url(r'^logout/', logout_view, name='logout'),
      url(r'^u/', include('users.urls', namespace="users")),
      url(r'^admin/', admin.site.urls),
      url(r'^books/', include('books.urls', namespace='books')) ,
      url(r'^staff/', include('staff.urls', namespace='staff')),
      url(r'^contact/', contactus, name='contact'),
      url(r'^ratings/', include('star_ratings.urls', namespace='ratings', app_name='ratings')),
  
      # API views
      #url(r'^api/book/', include('books.api.urls', namespace='book-api')),
      #url(r'^api/users/', include('users.api.urls', namespace='users-api')),
  ]
  
subject: Update urls.py