Django serves static files on debug mode

gistfile1.py

if settings.DEBUG:
    urlpatterns += patterns('',
        url(r'^static/(?P<path>.*)$', 'django.views.static.serve', {
            'document_root': settings.STATIC_ROOT,
        }),
        url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {
            'document_root': settings.MEDIA_ROOT,
        }),
    )