Index: django/contrib/comments/admin.py
===================================================================
--- django/contrib/comments/admin.py	(revision 7955)
+++ django/contrib/comments/admin.py	(working copy)
@@ -1,6 +1,7 @@
-
 from django.contrib import admin
+from django.contrib.comments.models import Comment, FreeComment
 
+
 class CommentAdmin(admin.ModelAdmin):
     fieldsets = (
         (None, {'fields': ('content_type', 'object_id', 'site')}),
Index: django/contrib/sites/admin.py
===================================================================
--- django/contrib/sites/admin.py	(revision 7955)
+++ django/contrib/sites/admin.py	(working copy)
@@ -1,6 +1,7 @@
-
 from django.contrib import admin
+from django.contrib.sites.models import Site
 
+
 class SiteAdmin(admin.ModelAdmin):
     list_display = ('domain', 'name')
     search_fields = ('domain', 'name')
Index: django/contrib/flatpages/admin.py
===================================================================
--- django/contrib/flatpages/admin.py	(revision 7955)
+++ django/contrib/flatpages/admin.py	(working copy)
@@ -1,6 +1,8 @@
-
 from django.contrib import admin
+from django.contrib.flatpages.models import FlatPage
+from django.utils.translation import ugettext_lazy as _
 
+
 class FlatPageAdmin(admin.ModelAdmin):
     fieldsets = (
         (None, {'fields': ('url', 'title', 'content', 'sites')}),