from optparse import make_option
from datetime import datetime, timedelta

from django.core.management.base import BaseCommand, CommandError
from django.db.models import Count

from pybb.models import Topic

class Command(BaseCommand):
    help = 'Resave all posts.'

    def handle(self, *args, **kwargs):
        check_time = datetime.now() - timedelta(seconds=10)
        topics = Topic.objects.filter(created__lt=check_time)\
                      .annotate(counter=Count('posts'))\
                      .filter(counter=0)

        count = topics.count()
        print 'Found %d invalid topics' % count
        if count:
            answer = raw_input('Are you sure you want delete them? [y/n]:')
            if answer.lower() == 'y':
                print 'Deleting topics'
                topics.delete()
                print 'Deletion completed'
            else:
                print 'Aborting'

Add management command to delete invalid topics
Add management command to delete invalid topics
