from django.conf.urls import url


urlpatterns = [
    'tagging_autocomplete.views',
    url(r'^list$', 'list_tags', name='tagging_autocomplete-list'),
]

from django.conf.urls import patterns, url


urlpatterns = patterns(
    'tagging_autocomplete.views',
    url(r'^list$', 'list_tags', name='tagging_autocomplete-list'),
)

--- 
+++ 
@@ -1,7 +1,7 @@
-from django.conf.urls import patterns, url
+from django.conf.urls import url
 
 
-urlpatterns = patterns(
+urlpatterns = [
     'tagging_autocomplete.views',
     url(r'^list$', 'list_tags', name='tagging_autocomplete-list'),
-)
+]
Drop the deprecated way of specifying url patterns