Problem with django-RESTframework-Tutorial - django

Question

I'm trying to get familiar with django-RESTframeworks, therefore I started the official tutorial, to create a Test-API.
https://www.django-rest-framework.org/tutorial/quickstart/#quickstart
When finally starting the API on my Windows via [CMD] "pyhon manage.py runserver", I get an error code on the command line, which you will see below.
I also want to add, that unfortunately, there is some ambiguity in the descriptions in the tutorial, at least from the viewpoint of a beginner, i.e. it's not always certain whether the corresponding code in the tutorial
needs to be added in a module or replace all or part of the code in the modules.
Therefore, I tried implementing the directions of the tutorial in various ways, always with the same end result.
I'm running the code in a virtual env, where i've installed Django 1.11., so there shouldn't be an issue with different Django versions.
C:\Users\Rolimar\projects\djREST_tut>workon djresttut
(djresttut) C:\Users\Rolimar\projects\djREST_tut>python manage.py runserver
Performing system checks...
Unhandled exception in thread started by <function wrapper at 0x0000000004CBF978>
Traceback (most recent call last):
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\utils\autoreload.py", line 228, in wrapper
fn(*args, **kwargs)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\management\commands\runserver.py", line 124, in inner_run
self.check(display_num_errors=True)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\management\base.py", line 359, in check
include_deployment_checks=include_deployment_checks,
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\management\base.py", line 346, in _run_checks
return checks.run_checks(**kwargs)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\checks\registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\checks\urls.py", line 16, in check_url_config
return check_resolver(resolver)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\core\checks\urls.py", line 26, in check_resolver
return check_method()
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\urls\resolvers.py", line 256, in check
for pattern in self.url_patterns:
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\utils\functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\urls\resolvers.py", line 407, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\utils\functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Rolima\Envs\djresttut\lib\site-packages\django\urls\resolvers.py", line 400, in urlconf_module
return import_module(self.urlconf_name)
File "c:\python27\Lib\importlib\__init__.py", line 37, in import_module
__import__(name)
File "C:\Users\Rolima\projects\djREST_tut\tutorial\urls.py", line 19, in <module>
from django.urls import include, path
ImportError: cannot import name include
And here my codes, I tried to copy from the tutorial:
"serializers.py"
from django.contrib.auth.models import User, Group
from rest_framework import serializers
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
class GroupSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = Group
fields = ('url', 'name')
"views.py"
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.shortcuts import render
# Create your views here.
from django.contrib.auth.models import User, Group
from rest_framework import viewsets
from tutorial.quickstart.serializers import UserSerializer, GroupSerializer
class UserViewSet(viewsets.ModelViewSet):
"""
API endpoint that allows users to be viewed or edited.
"""
queryset = User.objects.all().order_by('-date_joined')
serializer_class = UserSerializer
class GroupViewSet(viewsets.ModelViewSet):
"""
API endpoint that allows groups to be viewed or edited.
"""
queryset = Group.objects.all()
serializer_class = GroupSerializer
"urls.py"
"""tutorial URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/1.11/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
from django.contrib import admin
from django.urls import include, path
from rest_framework import routers
from tutorial.quickstart import views
router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'groups', views.GroupViewSet)
urlpatterns = [
url(r'^admin/', admin.site.urls),
path('', include(router.urls)),
path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]
in "settings.py", where I added 'rest_framework'
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles'
'rest_framework',
]
and where I also added the following code in the very end:
REST_FRAMEWORK = {
'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
'PAGE_SIZE': 10
}

Answer 1

Most probably you are using django<2.0 but following tutorials which are written in django>2.0. From django 2.0, include has been moved to django.urls, before it resided in django.conf.urls(changelog reference). So you need to update your urls.py like this:
from django.conf.urls import url, include
from django.contrib import admin
from rest_framework import routers
from tutorial.quickstart import views
router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'groups', views.GroupViewSet)
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^', include(router.urls)),
url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]
You can't use path as well, because it was introduced in django 2 as well.
Or you can move to django>2.0, but in that case you have to remove from django.conf.urls import url and use from django.urls import url.