old_contents: from django.conf.urls import patterns, url
  
  urlpatterns = patterns('',
      url(r'^mask/$', 'masquerade.views.mask'),
      url(r'^unmask/$', 'masquerade.views.unmask'),
  )
  
new_contents: from django.conf.urls import patterns, url
  
  from masquerade.views import mask
  from masquerade.views import unmask
  
  
  urlpatterns = [
      url(r'^mask/$', mask),
      url(r'^unmask/$', unmask),
  ]
  
subject: Fix Django 1.10 deprecation warning