old_contents: from __future__ import print_function
  from __future__ import unicode_literals
  from __future__ import division
  
  from django.conf.urls import patterns, include, url
  
  from treemap.views import index, settings
  
  urlpatterns = patterns(
      '',
      url(r'^/$', index),
      url(r'^config/settings.js$', settings)
  )
  
new_contents: from __future__ import print_function
  from __future__ import unicode_literals
  from __future__ import division
  
  from django.conf.urls import patterns, include, url
  
  from treemap.views import index, settings
  
  urlpatterns = patterns(
      '',
      url(r'^$', index),
      url(r'^config/settings.js$', settings)
  )
  
subject: Fix url pattern to stop requiring two trailing slashes.