seahub/thirdpart/captcha/urls.py

try:
    from django.conf.urls import url
except ImportError:
    from django.conf.urls.defaults import url

from .views import *

urlpatterns = [
    url(r'image/(?P<key>\w+)/$', captcha_image, name='captcha-image', kwargs={'scale': 1}),
    url(r'image/(?P<key>\w+)@2/$', captcha_image, name='captcha-image-2x', kwargs={'scale': 2}),
    url(r'audio/(?P<key>\w+)/$', captcha_audio, name='captcha-audio'),
    url(r'refresh/$', captcha_refresh, name='captcha-refresh'),
]