old_contents: from django.conf.urls import patterns, url
  from .views import ProfileDetailView, ProfileUpdateView
  
  urlpatterns = patterns(
      '',  # Empty string as prefix
  
      url('^/$', ProfileDetailView.as_view(), name='profile_detail'),
      url('^/update/$', ProfileUpdateView.as_view(), name='profile_update'),
  
      # url('^.(?P<format>ics|rss|atom)$', ProfileDetailView.as_view()),
  )
  
new_contents: from django.conf.urls import patterns, url
  from .views import ProfileDetailView, ProfileUpdateView
  
  urlpatterns = patterns(
      '',  # Empty string as prefix
  
      url('^$', ProfileDetailView.as_view(), name='profile_detail'),
      url('^/update/$', ProfileUpdateView.as_view(), name='profile_update'),
  
      # url('^.(?P<format>ics|rss|atom)$', ProfileDetailView.as_view()),
  )
  
subject: Fix profile_detail url