title: Django - Dictionary update sequence element #0 has length 1; 2 is required
body: <p>After i created new URLs, i got this error </p>
  
  <p><strong>ValueError at /blog/ dictionary update sequence element #0 has length 1; 2 is required</strong></p>
  
  <p>Traceback</p>
  
  <pre><code>Request Method: GET
  Request URL: http://127.0.0.1:8000/blog/
  
  Django Version: 1.7.2
  Python Version: 3.4.1
  Installed Applications:
  ('django.contrib.admin',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.messages',
   'django.contrib.staticfiles',
   'modeltranslation',
   'blog')
  Installed Middleware:
  ('django.contrib.sessions.middleware.SessionMiddleware',
   'django.middleware.common.CommonMiddleware',
   'django.middleware.csrf.CsrfViewMiddleware',
   'django.contrib.auth.middleware.AuthenticationMiddleware',
   'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
   'django.contrib.messages.middleware.MessageMiddleware',
   'django.middleware.clickjacking.XFrameOptionsMiddleware')
  
  
  Traceback:
  File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in get_response
    98.                 resolver_match = resolver.resolve(request.path_info)
  File "C:\Python34\lib\site-packages\django\core\urlresolvers.py" in resolve
    345.                     sub_match = pattern.resolve(new_path)
  File "C:\Python34\lib\site-packages\django\core\urlresolvers.py" in resolve
    345.                     sub_match = pattern.resolve(new_path)
  File "C:\Python34\lib\site-packages\django\core\urlresolvers.py" in resolve
    222.             kwargs.update(self.default_args)
  
  Exception Type: ValueError at /blog/
  Exception Value: dictionary update sequence element #0 has length 1; 2 is required
  </code></pre>
  
  <p>I use this urls </p>
  
  <pre><code># /project/urls.py
  from blog.urls import urlpatterns as blog_urls
  
  urlpatterns = patterns('',
      url(r'^admin/', include(admin.site.urls)),
      url(r'^blog/', include(blog_urls, 'blog')),
  )
  
  # /blog/urls.py
  urlpatterns = patterns('blog.views',
      url(r'^$', 'index', 'index'),
      url(r'^category/(?P&lt;category_id&gt;\d+)/$', 'category', 'category'),
  )
  
  # /blog/views.py
  def index(request):
      render(request, 'blog/index.html')
  
  def category(request, category_id):
      render(request, 'blog/index.html')
  </code></pre>
  
  <p>Why i got this error? Never saw it before and i don't know why i getting this error...</p>