text: #!/usr/bin/env python3
  
  # Copyright (c) Facebook, Inc. and its affiliates.
  # This source code is licensed under the MIT license found in the
  # LICENSE file in the root directory of this source tree.
  
  from parlai.core.build_data import DownloadableFile
  import parlai.core.build_data as build_data
  import os
  
  RESOURCES = [
      DownloadableFile(
          'https://github.com/facebookresearch/end-to-end-negotiator/archive/bbb93bbf00f69fced75d5c0d22e855bda07c9b78.zip',
          'negotiation.zip',
          '101f1ce90c3d86a55b097821de812af8e747004beb7a763a63127545b178ddf4',
      )
  ]
  
  
  def build(opt):
      dpath = os.path.join(opt['datapath'], 'negotiation')
      version = "v1.1"
  
      if not build_data.built(dpath, version_string=version):
          print('[building data: ' + dpath + ']')
  
          # make a clean directory if needed
          if build_data.built(dpath):
              # an older version exists, so remove these outdated files.
              build_data.remove_dir(dpath)
          build_data.make_dir(dpath)
  
          # Download the data.
          for downloadable_file in RESOURCES:
              downloadable_file.download_file(dpath)
  
          # Mark as done
          build_data.mark_done(dpath, version_string=version)
  