code: # -*- coding: utf-8 -*-
  import datetime
  from south.db import db
  from south.v2 import SchemaMigration
  from django.db import models
  
  
  class Migration(SchemaMigration):
  
      def forwards(self, orm):
          db.execute("create index canvas_comment_id_and_visibility_and_parent_comment_id on canvas_comment (id, visibility, parent_comment_id);")
  
      def backwards(self, orm):
          raise RuntimeError("Cannot reverse this migration.") 
  
      models = {
          'auth.group': {
              'Meta': {'object_name': 'Group'},
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
              'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
          },
          'auth.permission': {
              'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
              'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
              'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
          },
          'auth.user': {
              'Meta': {'object_name': 'User'},
              'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
              'email': ('django.db.models.fields.EmailField', [], {'max_length': '254', 'blank': 'True'}),
              'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
              'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
              'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
              'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
              'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
              'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
              'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
          },
          'canvas.apiapp': {
              'Meta': {'object_name': 'APIApp'},
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'})
          },
          'canvas.apiauthtoken': {
              'Meta': {'unique_together': "(('user', 'app'),)", 'object_name': 'APIAuthToken'},
              'app': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.APIApp']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'token': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
          },
          'canvas.bestof': {
              'Meta': {'object_name': 'BestOf'},
              'category': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'best_of'", 'null': 'True', 'blank': 'True', 'to': "orm['canvas.Category']"}),
              'chosen_by': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'best_of'", 'to': "orm['canvas.Comment']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {})
          },
          'canvas.category': {
              'Meta': {'object_name': 'Category'},
              'description': ('django.db.models.fields.CharField', [], {'max_length': '140'}),
              'founded': ('django.db.models.fields.FloatField', [], {'default': '1298956320'}),
              'founder': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'founded_groups'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'moderators': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'moderated_categories'", 'symmetrical': 'False', 'to': "orm['auth.User']"}),
              'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
              'visibility': ('django.db.models.fields.IntegerField', [], {'default': '0'})
          },
          'canvas.comment': {
              'Meta': {'object_name': 'Comment'},
              'anonymous': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'author': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'comments'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"}),
              'category': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'comments'", 'null': 'True', 'blank': 'True', 'to': "orm['canvas.Category']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'ip': ('django.db.models.fields.IPAddressField', [], {'default': "'127.0.0.1'", 'max_length': '15'}),
              'judged': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'ot_hidden': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'parent_comment': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'replies'", 'null': 'True', 'blank': 'True', 'to': "orm['canvas.Comment']"}),
              'parent_content': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'comments'", 'null': 'True', 'to': "orm['canvas.Content']"}),
              'posted_on_quest_of_the_day': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'replied_comment': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['canvas.Comment']", 'null': 'True', 'blank': 'True'}),
              'reply_content': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'used_in_comments'", 'null': 'True', 'to': "orm['canvas.Content']"}),
              'reply_text': ('django.db.models.fields.CharField', [], {'max_length': '2000', 'blank': 'True'}),
              'score': ('django.db.models.fields.FloatField', [], {'default': '0', 'db_index': 'True'}),
              'skip_moderation': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'star_count': ('django.db.models.fields.IntegerField', [], {'default': '0', 'blank': 'True'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {'default': '0'}),
              'title': ('django.db.models.fields.CharField', [], {'max_length': '140', 'blank': 'True'}),
              'visibility': ('django.db.models.fields.IntegerField', [], {'default': '0'})
          },
          'canvas.commentflag': {
              'Meta': {'object_name': 'CommentFlag'},
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'flags'", 'to': "orm['canvas.Comment']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'ip': ('django.db.models.fields.IPAddressField', [], {'max_length': '15'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'type_id': ('django.db.models.fields.IntegerField', [], {}),
              'undone': ('django.db.models.fields.BooleanField', [], {'default': 'False', 'db_index': 'True'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'flags'", 'to': "orm['auth.User']"})
          },
          'canvas.commentmoderationlog': {
              'Meta': {'object_name': 'CommentModerationLog'},
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Comment']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'moderator': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True'}),
              'note': ('django.db.models.fields.TextField', [], {}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'moderated_comments_log'", 'to': "orm['auth.User']"}),
              'visibility': ('django.db.models.fields.IntegerField', [], {})
          },
          'canvas.commentpin': {
              'Meta': {'object_name': 'CommentPin'},
              'auto': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Comment']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
          },
          'canvas.commentsticker': {
              'Meta': {'object_name': 'CommentSticker'},
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'stickers'", 'to': "orm['canvas.Comment']"}),
              'epic_message': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '140', 'blank': 'True'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'ip': ('django.db.models.fields.IPAddressField', [], {'max_length': '15'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'type_id': ('django.db.models.fields.IntegerField', [], {}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'})
          },
          'canvas.commentstickerlog': {
              'Meta': {'object_name': 'CommentStickerLog'},
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Comment']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
          },
          'canvas.content': {
              'Meta': {'object_name': 'Content'},
              'alpha': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'animated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'id': ('django.db.models.fields.CharField', [], {'max_length': '40', 'primary_key': 'True'}),
              'ip': ('django.db.models.fields.IPAddressField', [], {'default': "'127.0.0.1'", 'max_length': '15'}),
              'remix_of': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'remixes'", 'null': 'True', 'to': "orm['canvas.Content']"}),
              'remix_text': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '1000', 'blank': 'True'}),
              'source_url': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '4000', 'blank': 'True'}),
              'stamps_used': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "'used_as_stamp'", 'blank': 'True', 'to': "orm['canvas.Content']"}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'url_mapping': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.ContentUrlMapping']", 'null': 'True', 'blank': 'True'}),
              'visibility': ('django.db.models.fields.IntegerField', [], {'default': '0'})
          },
          'canvas.contenturlmapping': {
              'Meta': {'object_name': 'ContentUrlMapping'},
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
          },
          'canvas.emailunsubscribe': {
              'Meta': {'object_name': 'EmailUnsubscribe'},
              'email': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
          },
          'canvas.externalcontent': {
              'Meta': {'object_name': 'ExternalContent'},
              '_data': ('django.db.models.fields.TextField', [], {'default': "'{}'"}),
              'content_type': ('django.db.models.fields.CharField', [], {'max_length': '2'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'parent_comment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'external_content'", 'to': "orm['canvas.Comment']"}),
              'source_url': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '4000', 'null': 'True', 'blank': 'True'})
          },
          'canvas.facebookinvite': {
              'Meta': {'object_name': 'FacebookInvite'},
              'fb_message_id': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'invited_fbid': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
              'invitee': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'facebook_invited_from'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"}),
              'inviter': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'facebook_sent_invites'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"})
          },
          'canvas.facebookuser': {
              'Meta': {'object_name': 'FacebookUser'},
              'email': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
              'fb_uid': ('django.db.models.fields.BigIntegerField', [], {'unique': 'True'}),
              'first_name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
              'gender': ('django.db.models.fields.PositiveSmallIntegerField', [], {'default': '0'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'last_invited': ('canvas.util.UnixTimestampField', [], {'default': '0'}),
              'last_name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
              'user': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['auth.User']", 'unique': 'True', 'null': 'True', 'blank': 'True'})
          },
          'canvas.followcategory': {
              'Meta': {'unique_together': "(('user', 'category'),)", 'object_name': 'FollowCategory'},
              'category': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'followers'", 'to': "orm['canvas.Category']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'following'", 'to': "orm['auth.User']"})
          },
          'canvas.invitecode': {
              'Meta': {'object_name': 'InviteCode'},
              'code': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '32'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'invitee': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'invited_from'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"}),
              'inviter': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'sent_invites'", 'null': 'True', 'blank': 'True', 'to': "orm['auth.User']"})
          },
          'canvas.remixplugin': {
              'Meta': {'object_name': 'RemixPlugin'},
              'author': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              's3md5': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {'default': '0'})
          },
          'canvas.stashcontent': {
              'Meta': {'object_name': 'StashContent'},
              'content': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Content']"}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
          },
          'canvas.userinfo': {
              'Meta': {'object_name': 'UserInfo'},
              'avatar': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Content']", 'null': 'True'}),
              'bio_text': ('django.db.models.fields.CharField', [], {'max_length': '2000', 'blank': 'True'}),
              'enable_timeline': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
              'enable_timeline_posts': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'facebook_id': ('django.db.models.fields.CharField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
              'follower_count': ('django.db.models.fields.IntegerField', [], {'default': '0', 'blank': 'True'}),
              'free_invites': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'invite_bypass': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '255', 'blank': 'True'}),
              'is_qa': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'post_anonymously': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'profile_image': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['canvas.Comment']", 'null': 'True'}),
              'trust_changed': ('canvas.util.UnixTimestampField', [], {'null': 'True', 'blank': 'True'}),
              'trusted': ('django.db.models.fields.NullBooleanField', [], {'null': 'True', 'blank': 'True'}),
              'user': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['auth.User']", 'unique': 'True'})
          },
          'canvas.usermoderationlog': {
              'Meta': {'object_name': 'UserModerationLog'},
              'action': ('django.db.models.fields.IntegerField', [], {}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'moderator': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True'}),
              'note': ('django.db.models.fields.TextField', [], {}),
              'timestamp': ('canvas.util.UnixTimestampField', [], {}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'moderation_log'", 'to': "orm['auth.User']"})
          },
          'canvas.userwarning': {
              'Meta': {'object_name': 'UserWarning'},
              'comment': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['canvas.Comment']", 'null': 'True', 'blank': 'True'}),
              'confirmed': ('canvas.util.UnixTimestampField', [], {'default': '0'}),
              'custom_message': ('django.db.models.fields.TextField', [], {}),
              'disable_user': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'issued': ('canvas.util.UnixTimestampField', [], {}),
              'stock_message': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
              'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'user_warnings'", 'to': "orm['auth.User']"}),
              'viewed': ('canvas.util.UnixTimestampField', [], {'default': '0'})
          },
          'canvas.welcomeemailrecipient': {
              'Meta': {'object_name': 'WelcomeEmailRecipient'},
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'recipient': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'unique': 'True'})
          },
          'contenttypes.contenttype': {
              'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
              'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
              'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
              'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
              'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
          }
      }
  
      complete_apps = ['canvas']
  
entities: [['IP_ADDRESS', '127.0.0.1'], ['IP_ADDRESS', '127.0.0.1'], ['PERSON', 'FloatField'], ['DATE_TIME', "'2000'"], ['PERSON', 'FloatField'], ['URL', 'django.db.models.fields.Ch'], ['URL', 'django.db.models.fields.related.Fo'], ['URL', 'canvas.Co'], ['URL', 'canvas.co'], ['URL', 'django.db.models.fields.Au'], ['URL', 'django.db.models.fields.Ch'], ['PERSON', 'RemixPlugin'], ['DATE_TIME', "'2000'"], ['PERSON', 'follower_count'], ['PERSON', 'UserWarning'], ['PERSON', 'complete_apps'], ['URL', 'auth.gr'], ['URL', 'django.db.models.fields.Au'], ['URL', 'django.db.models.fields.Ch'], ['URL', 'django.db.models.fields.related.Ma'], ['URL', 'auth.Pe'], ['URL', 'auth.pe'], ['URL', 'django.db.models.fields.Ch'], ['URL', 'django.db.models.fields.related.Fo'], ['URL', 'contenttypes.Co'], ['URL', 'django.db.models.fields.Au'], ['URL', 'django.db.models.fields.Ch'], ['URL', 'auth.us'], ['URL', 'django.db.models.fi'], ['URL', 'datetime.datetime.no'], ['URL', 'django.db.models.fi'], ['URL', 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