No module named admin.sites.urls

I am new to Django, Python and this site. I have read the Django docs and the tutorial from How to tango with django and now I hit the roadblock. I get the error No module names admin.sites.urls and not sure what I need to do now.

urls.py:

from django.conf import settings
from django.conf.urls import patterns, include, url
from rango import views
from django.contrib import admin, admindocs
admin.autodiscover()

urlpatterns = patterns('',

    url(r'^$', 'rango.views.index', name='index'),
    url(r'^$', 'rango.views.about', name ='about'),
    url(r'^rango/', include('RangoTango.urls')),
    url(r'^admin/', include(admin.sites.urls)),
    url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
) 

if settings.DEBUG:
    urlpatterns += patterns(
    'django.views.static',
    (r'media/(?P<path>.*)',
    'serve',
    {'document_root': settings.MEDIA_ROOT}), ) 

      

        
        
        
      

    

Settings.py:

INSTALLED_APPS = (
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'django.contrib.admin',
     'django.contrib.admindocs',
     'rango',

 )

MIDDLEWARE_CLASSES = (
    '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',
)

ROOT_URLCONF = 'RangoTango.urls'

WSGI_APPLICATION = 'RangoTango.wsgi.application'

      

        
        
        
      

    

Mistake:

ImportError at /admin

No module named admin.sites.urls

Request Method:     GET
Request URL:    127.0.0.1:8000/admin
Django Version:     1.6.5
Exception Type:     ImportError
Exception Value:    

No module named admin.sites.urls

Exception Location:     /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/utils/importlib.py in import_module, line 40
Python Executable:  /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Python Version:     2.7.6
Python Path:    

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Server time:    Fri, 22 Aug 2014 18:44:18 +0000