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My guess is you’re including the “chart” URI component already in the project-level (IE, root) urlconf, so including it again the app’s urlconf is throwing off the resolver. Basically try removing the “chart/” from the chart url, like so:
from django.conf.urls import patterns,url
from musichart import views
urlpatterns = patterns('',
url(r'^$', views.index, name="index"),
url(r'^(?P<year>\d+)$',views.chart,name="chart"),
)
And in addition, double check that you don’t have a trailing space after “chart” when including the app-level urlconf from the root urlconf.
👤technivore
Source:stackexchange.com