(r'^articles/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{2})/(P?<slug>[-\w]+)/$', 'main.views.entry_detail'),

 Page not found (404)
Request Method:	GET
Request URL:	http://127.0.0.1:8000/articles/2010/feb/14/vtoraya-zapis/
Using the URLconf defined in wpbaze.urls, Django tried these URL patterns, in this order:
^$
^articles/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{2})/(P?<slug>[-\w]+)/$
^admin/
The current URL, articles/2010/feb/14/vtoraya-zapis/, didn't match any of these.

(r'^css/(?P<file>\w+\.css)/$', 'someview'),

>>> import re
>>> g = re.match('^css/(?P<file>\w+\.css)/$','css/file.css/')
>>> print g.groups()
('file.css',)

urlpatterns = patterns('',
  url(r'^styles.css$', 'css_generate'),
)

def generate_css(request):
  css = ...
  return render_to_response(
    'шаблон.css',
    {'css': css},
    context_instance=RequestContext(request),
    mimetype='text/css'
  )