text: from optparse import make_option
  
  from django.conf import settings
  from django.db import connections, router, transaction, models, DEFAULT_DB_ALIAS
  from django.core.management import call_command
  from django.core.management.base import NoArgsCommand, CommandError
  from django.core.management.color import no_style
  from django.core.management.sql import sql_flush, emit_post_sync_signal
  from django.utils.importlib import import_module
  
  
  class Command(NoArgsCommand):
      option_list = NoArgsCommand.option_list + (
          make_option('--noinput', action='store_false', dest='interactive', default=True,
              help='Tells Django to NOT prompt the user for input of any kind.'),
          make_option('--database', action='store', dest='database',
              default=DEFAULT_DB_ALIAS, help='Nominates a database to flush. '
                  'Defaults to the "default" database.'),
      )
      help = ('Returns the database to the state it was in immediately after '
             'syncdb was executed. This means that all data will be removed '
             'from the database, any post-synchronization handlers will be '
             're-executed, and the initial_data fixture will be re-installed.')
  
      def handle_noargs(self, **options):
          db = options.get('database')
          connection = connections[db]
          verbosity = int(options.get('verbosity'))
          interactive = options.get('interactive')
  
          self.style = no_style()
  
          # Import the 'management' module within each installed app, to register
          # dispatcher events.
          for app_name in settings.INSTALLED_APPS:
              try:
                  import_module('.management', app_name)
              except ImportError:
                  pass
  
          sql_list = sql_flush(self.style, connection, only_django=True)
  
          if interactive:
              confirm = raw_input("""You have requested a flush of the database.
  This will IRREVERSIBLY DESTROY all data currently in the %r database,
  and return each table to the state it was in after syncdb.
  Are you sure you want to do this?
  
      Type 'yes' to continue, or 'no' to cancel: """ % connection.settings_dict['NAME'])
          else:
              confirm = 'yes'
  
          if confirm == 'yes':
              try:
                  cursor = connection.cursor()
                  for sql in sql_list:
                      cursor.execute(sql)
              except Exception, e:
                  transaction.rollback_unless_managed(using=db)
                  raise CommandError("""Database %s couldn't be flushed. Possible reasons:
    * The database isn't running or isn't configured correctly.
    * At least one of the expected database tables doesn't exist.
    * The SQL was invalid.
  Hint: Look at the output of 'django-admin.py sqlflush'. That's the SQL this command wasn't able to run.
  The full error: %s""" % (connection.settings_dict['NAME'], e))
              transaction.commit_unless_managed(using=db)
  
              # Emit the post sync signal. This allows individual
              # applications to respond as if the database had been
              # sync'd from scratch.
              all_models = []
              for app in models.get_apps():
                  all_models.extend([
                      m for m in models.get_models(app, include_auto_created=True)
                      if router.allow_syncdb(db, m)
                  ])
              emit_post_sync_signal(set(all_models), verbosity, interactive, db)
  
              # Reinstall the initial_data fixture.
              kwargs = options.copy()
              kwargs['database'] = db
              call_command('loaddata', 'initial_data', **kwargs)
  
          else:
              self.stdout.write("Flush cancelled.\n")
  