Page not found 404 on Django site?

I had the same problem.

It turns out I was confused because of the multiple directories named "mysite".

I wrongly created a urls.py file in the root "mysite" directory (which contains "manage.py"), then pasted in the code from the website.

To correct it I deleted this file, went into the mysite/mysite directory (which contains "settings.py"), modified the existing "urls.py" file, and replaced the code with the tutorial code.

In a nutshell, make sure your urls.py file is in the right directory.

Django unable to resolve 127.0.0.1:8000/polls because url config defined as r'^polls/'.

Usual workaround:

mySite/urls.py:

from django.conf.urls import patterns, include, url
from django.contrib import admin

urlpatterns = patterns('',
url(r'^admin/', include(admin.site.urls)),
url(r'^polls/', include('polls.urls')),
)

Note: Whenever Django encounters include(), It chops off whatever part of the URL matched up to that point and sends the remaining string to the included URLconf for further processing.

mySite/polls/urls.py:

from django.conf.urls import patterns, url
from polls import views

urlpatterns = patterns('polls.views',
url(r'^$', 'index', name='index'), 
)

Note: Instead of typing that out for each entry in urlpatterns, you can use the first argument to the patterns() function to specify a prefix to apply to each view function.

Answer If

If you want to access 127.0.0.1:8000/polls Note: without trailing slash

use view based url

url(r'^polls', 'polls.views.index', name='index'),

So now you can access 127.0.0.1:8000/polls without trailing slash.