old_contents: from __future__ import print_function
  from __future__ import unicode_literals
  from optparse import make_option
  import sys
  import six
  
  from django.core.management.base import BaseCommand
  
  
  class Command(BaseCommand):
      help = "Clears out the search index completely."
      base_options = (
          make_option('--noinput', action='store_false', dest='interactive', default=True,
              help='If provided, no prompts will be issued to the user and the data will be wiped out.'
          ),
          make_option("-u", "--using", action="append", dest="using",
              default=[],
              help='Update only the named backend (can be used multiple times). '
                   'By default all backends will be updated.'
          ),
      )
      option_list = BaseCommand.option_list + base_options
  
      def handle(self, **options):
          """Clears out the search index completely."""
          from haystack import connections
          self.verbosity = int(options.get('verbosity', 1))
  
          using = options.get('using')
          if not using:
              using = connections.connections_info.keys()
  
          if options.get('interactive', True):
              print()
              print("WARNING: This will irreparably remove EVERYTHING from your search index in connection '%s'." % "', '".join(using))
              print("Your choices after this are to restore from backups or rebuild via the `rebuild_index` command.")
  
              yes_or_no = six.moves.input("Are you sure you wish to continue? [y/N] ")
              print
  
              if not yes_or_no.lower().startswith('y'):
                  print("No action taken.")
                  sys.exit()
  
          if self.verbosity >= 1:
              print("Removing all documents from your index because you said so.")
  
          for backend_name in using:
              backend = connections[backend_name].get_backend()
              backend.clear()
  
          if self.verbosity >= 1:
              print("All documents removed.")
  
new_contents: from __future__ import print_function
  from __future__ import unicode_literals
  from optparse import make_option
  import sys
  
  from django.core.management.base import BaseCommand
  from django.utils import six
  
  
  class Command(BaseCommand):
      help = "Clears out the search index completely."
      base_options = (
          make_option('--noinput', action='store_false', dest='interactive', default=True,
              help='If provided, no prompts will be issued to the user and the data will be wiped out.'
          ),
          make_option("-u", "--using", action="append", dest="using",
              default=[],
              help='Update only the named backend (can be used multiple times). '
                   'By default all backends will be updated.'
          ),
      )
      option_list = BaseCommand.option_list + base_options
  
      def handle(self, **options):
          """Clears out the search index completely."""
          from haystack import connections
          self.verbosity = int(options.get('verbosity', 1))
  
          using = options.get('using')
          if not using:
              using = connections.connections_info.keys()
  
          if options.get('interactive', True):
              print()
              print("WARNING: This will irreparably remove EVERYTHING from your search index in connection '%s'." % "', '".join(using))
              print("Your choices after this are to restore from backups or rebuild via the `rebuild_index` command.")
  
              yes_or_no = six.moves.input("Are you sure you wish to continue? [y/N] ")
              print
  
              if not yes_or_no.lower().startswith('y'):
                  print("No action taken.")
                  sys.exit()
  
          if self.verbosity >= 1:
              print("Removing all documents from your index because you said so.")
  
          for backend_name in using:
              backend = connections[backend_name].get_backend()
              backend.clear()
  
          if self.verbosity >= 1:
              print("All documents removed.")
  
subject: Use Django's copy of six