old_contents: from django.conf.urls.defaults import patterns, url
  from go.contacts import views
  
  urlpatterns = patterns('',
      url(r'^$', views.index, name='index'),
      url(r'^groups/$', views.groups, name='groups'),
      # TODO: Is the group_name regex sane?
      url(r'^groups/(?P<group_key>\w+)/$', views.group, name='group'),
      url(r'^people/$', views.people, name='people'),
      url(r'^people/new/$', views.new_person, name='new_person'),
      url(r'^people/(?P<person_key>.+)/$', views.person, name='person'),
  )
  
new_contents: from django.conf.urls.defaults import patterns, url
  from go.contacts import views
  
  urlpatterns = patterns('',
      url(r'^$', views.index, name='index'),
      url(r'^groups/$', views.groups, name='groups'),
      # TODO: Is the group_name regex sane?
      url(r'^groups/(?P<group_key>[\w ]+)/$', views.group, name='group'),
      url(r'^people/$', views.people, name='people'),
      url(r'^people/new/$', views.new_person, name='new_person'),
      url(r'^people/(?P<person_key>\w+)/$', views.person, name='person'),
  )
  
subject: revert urls.py change