old_contents: from django.conf.urls import patterns, include, url
  
  from .views import btax_results, output_detail, csv_input, csv_output, pdf_view, edit_btax_results
  
  
  urlpatterns = patterns('',
      url(r'^$', btax_results, name='btax_tax_form'),
      url(r'^(?P<pk>\d+)/output.csv/$', csv_output, name='btax_csv_output'),
      url(r'^(?P<pk>\d+)/input.csv/$', csv_input, name='btax_csv_input'),
      url(r'^(?P<pk>\d+)/', output_detail, name='btax_output_detail'),
      url(r'^pdf/$', pdf_view),
      url(r'^edit/(?P<pk>\d+)/', edit_btax_results, name='btax_edit_btax_results'),
  )
  
new_contents: from django.conf.urls import patterns, include, url
  
  from .views import btax_results, output_detail, edit_btax_results
  
  
  urlpatterns = patterns('',
      url(r'^$', btax_results, name='btax_tax_form'),
      url(r'^(?P<pk>\d+)/', output_detail, name='btax_output_detail'),
      url(r'^edit/(?P<pk>\d+)/', edit_btax_results, name='btax_edit_btax_results'),
  )
  
subject: make corresponding changes in urls.py for views that are gone (csv/pdf)