Django 'polls' is not a registered namespace

I'm learning Django from [THIS][1] tutorial. Everything worked perfectly until this step: Now change your polls/index.html template from: ``` <li><a href="{% url 'detail' poll.id %}">{{ poll.question }}</a></li> ``` to point at the namespaced detail view: ``` <li><a href="{% url 'polls:detail' poll.id %}">{{ poll.question }}</a></li> ``` You can see the whole paragraph [HERE][2]. And that's what happened after I changed 'detail' into 'polls:detail': ``` NoReverseMatch at /polls/ 'polls' is not a registered namespace Request Method: GET Request URL: http://127.0.0.1:8000/polls/ Django Version: 1.6.4 Exception Type: NoReverseMatch Exception Value: 'polls' is not a registered namespace Exception Location: D:\Programy\Python 3.4\lib\site-packages\django\core\urlresolvers.py in reverse, line 528 Python Executable: D:\Programy\Python 3.4\python.exe Python Version: 3.4.0 Python Path: ['D:\\dziango\\strona1', 'D:\\Programy\\Python 3.4\\python34.zip', 'D:\\Programy\\Python 3.4\\DLLs', 'D:\\Programy\\Python 3.4\\lib', 'D:\\Programy\\Python 3.4', 'D:\\Programy\\Python 3.4\\lib\\site-packages'] Server time: Wed, 21 May 2014 16:36:13 +0200 ``` and here is my Traceback: ``` Environment: Request Method: GET Request URL: http://127.0.0.1:8000/polls/ Django Version: 1.6.4 Python Version: 3.4.0 Installed Applications: ('django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'polls') Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware') Template error: In template D:\dziango\strona1\polls\templates\polls\index.html, error at line 1 'polls' is not a registered namespace 1 : {% if latest_poll_list %} <ul> {% for poll in latest_poll_list %} <li><a href=" {% url 'polls:detail' poll.id %} ">{{ poll.question }}</a></li> {% endfor %} </ul> {% else %} <p>Nie ma ankiet.</p> {% endif %} Traceback: File "D:\Programy\Python 3.4\lib\site-packages\django\core\handlers\base.py" in get_response 114. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "D:\dziango\strona1\polls\views.py" in index 11. return render(request, 'polls/index.html', context) File "D:\Programy\Python 3.4\lib\site-packages\django\shortcuts\__init__.py" in render 53. return HttpResponse(loader.render_to_string(*args, **kwargs), File "D:\Programy\Python 3.4\lib\site-packages\django\template\loader.py" in render_to_string 169. return t.render(context_instance) File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render 140. return self._render(context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in _render 134. return self.nodelist.render(context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render 840. bit = self.render_node(node, context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\debug.py" in render_node 78. return node.render(context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render 305. return nodelist.render(context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render 840. bit = self.render_node(node, context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\debug.py" in render_node 78. return node.render(context) File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render 196. nodelist.append(node.render(context)) File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render 447. six.reraise(*exc_info) File "D:\Programy\Python 3.4\lib\site-packages\django\utils\six.py" in reraise 550. raise value File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render 433. url = reverse(view_name, args=args, kwargs=kwargs, current_app=context.current_app) File "D:\Programy\Python 3.4\lib\site-packages\django\core\urlresolvers.py" in reverse 528. key) Exception Type: NoReverseMatch at /polls/ Exception Value: 'polls' is not a registered namespace ``` I tried every single solution from [THIS][3] similar topic but none of them works for me. I don't paste my code here because I wrote it all from that tutorial and it's exactly the same. Everything I did was done step by step according to it. But if you need my code anyway, please tell and I'll put it here. Sorry for my English. == EDIT == here is my root urls.py file: ``` from django.conf.urls import patterns, url, include from django.contrib import admin admin.autodiscover() urlpatterns = patterns('', url(r'^polls/', include('polls.urls', namespace="polls")), url(r'^admin/', include(admin.site.urls)), ) ``` and this is polls/views.py: ``` from django.shortcuts import render, get_object_or_404 from django.http import HttpResponse, HttpResponseRedirect from django.core.urlresolvers import reverse from polls.models import Choice, Poll # Create your views here. def index(request): latest_poll_list = Poll.objects.order_by('-pub_date')[:5] context = {'latest_poll_list': latest_poll_list } return render(request, 'polls/index.html', context) def detail(request, poll_id): poll = get_object_or_404(Poll, pk=poll_id) return render(request, 'polls/detail.html', {'poll':poll}) def results(request, poll_id): return HttpResponse("Wyniki ankiety %s!" %poll_id) def vote(request, poll_id): p = get_object_or_404(Poll, pk=poll_id) try: selected_choice = p.choice_set.get(pk=request.POST['choice']) except (KeyError, Choice.DoesNotExist): # Redisplay the poll voting form return render(request, 'polls/detail.html', { 'poll':p, 'error_message':"Nie wybrałeś żadnej opcji.", }) else: selected_choice.votes += 1 selected_choice.save() return HttpResponse(reverse('polls:results', args=(p.id,))) ``` polls/urls.py: ``` from django.conf.urls import patterns, url from polls import views urlpatterns = patterns('', # ex: /polls/ url(r'^$', views.index, name='index'), # ex: /polls/5/ url(r'^(?P<poll_id>\d+)/$', views.detail, name='detail'), # ex: /polls/5/results url(r'^(?P<poll_id>\d+)/results/$', views.results, name='results'), # ex: /polls/5/vote url(r'^(?P<poll_id>\d+)/vote/$', views.vote, name='vote'), ) ``` UPDATE: Okay, I've made a foolish mistake by placing my urls.py in the wrong directory.. sorry