Django REST framework 2 example not working - django

Question

I'm working the very first example of the Django REST framework (version 2). I've followed the Installation and Example instructions to the letter but when I open the API in my browser at http://127.0.0.1:8000/ per their instructions, I get the error shown below. What am I doing wrong? This example seems pretty elementary.
Page not found (404)
Request Method: GET
Request URL: http://127.0.0.1:8000/
Using the URLconf defined in conf.urls, Django tried these URL patterns, in this order:
^admin/
^api-auth/
The current URL, , didn't match any of these.

Answer 1

If you're using Django 2.x for following that tutorial, I'm afraid it's not updated. I just did exactly what the tutorial says, and in the first try it fails.
Then, I changed my urls.py file as follow:
before:
path('admin/', admin.site.urls),
path(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path(r'^', include(router.urls)),
After:
path('admin/', admin.site.urls),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
path('', include(router.urls)),
and then did python manage.py runserver, and it's working properly.

Answer 2

you don't have a main url defined, must define a index url something like this:
urlpatterns = [
path('index', views.index, name='index'),
# the next path cath the empty path url www.example.com
re_path('/?$', views.index)
]
the url http://127.0.0.1:8000/ don't exist in your urlpatterns, that's what django is telling you.
to work in django rest framework you must follow the next flowjob:
create yours models
create a serializer for yours models
create a ApiView, ViewSet or Django view where you use your serializers to respond to user requests.
register your views in you urlpattern
if you want to enter in the rest-framework login URLs use the pathlocalhost:8000/api-auth