title: No module named 'django.urls' django 1.8
body: <p>views.py</p>
  
  <pre><code>from nba.models import News
  from nba.serializers import NewsSerializers
  
  from rest_framework import viewsets
  
  
  # Create your views here.
  class NewsViewSet(viewsets.ModelViewSet):
      queryset = News.objects.all()
      serializer_class = NewsSerializers
  </code></pre>
  
  <p>urls.py</p>
  
  <pre><code>from django.conf.urls import url, include
  from django.contrib import admin
  from rest_framework.routers import DefaultRouter
  from nba import views
  
  router = DefaultRouter()
  router.register(r'news', views.NewsViewSet)
  
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'^api/', include('router.urls')),
  ]
  </code></pre>
  
  <p>my django version is 1.8.</p>
  
  <p>When I visited <a href="http://127.0.0.1:8000/api" rel="nofollow noreferrer">http://127.0.0.1:8000/api</a> I got No module named 'django.urls' what should i do</p>