对象_detail()在只输入一个关键字参数'queryset'时获得了多个值

from django.conf.urls.defaults import *
from django.conf import settings
from Website.Blog.models import Post
# Uncomment the next two lines to enable the admin:
from django.contrib import admin
admin.autodiscover()

index = {
            'queryset': Post.objects.all(),
            'date_field': 'created_on',
            'template_name': 'index.html',
            'num_latest': 5
        }

post =  {
            'template_name': 'index.html',
            'queryset': Post.objects.all(), # only here, what could be wrong?
            'slug': 'slug',
        }

urlpatterns = patterns('',
    # Example:
    url(r'^$', 'django.views.generic.date_based.archive_index', index, name='index'),
    url(r'^post/(\S+)/$', 'django.views.generic.list_detail.object_detail', post, name='post'),

    # Uncomment the admin/doc line below and add 'django.contrib.admindocs' 
    # to INSTALLED_APPS to enable admin documentation:
    # (r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:
    (r'^admin/', include(admin.site.urls))
)


if settings.DEBUG:
    urlpatterns += patterns('',
        (r'^css/(?P<path>.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT, 'show_indexes': True}),
        (r'^images/(?P<path>.*)$', 'django.views.static.serve', {'document_root': settings.IMAGES_ROOT, 'show_indexes': True})
    )