code: def upload_output_to_s3(job, job_vars):
      
      import boto
      from boto.s3.key import Key
  
      input_args, ids = job_vars
      work_dir = job.fileStore.getLocalTempDir()
      uuid = input_args['uuid']
      # Parse s3_dir
      s3_dir = input_args['s3_dir']
      bucket_name = s3_dir.split('/')[0]
      bucket_dir = '/'.join(s3_dir.split('/')[1:])
      # I/O
      uuid_tar = return_input_paths(job, work_dir, ids, 'uuid.tar.gz')
      # Upload to S3 via boto
      conn = boto.connect_s3()
      bucket = conn.get_bucket(bucket_name)
      k = Key(bucket)
      k.key = os.path.join(bucket_dir, uuid + '.tar.gz')
      k.set_contents_from_filename(uuid_tar)
docs: If s3_dir is specified in arguments, file will be uploaded to S3 using boto.
      WARNING: ~/.boto credentials are necessary for this to succeed!
  
      job_vars: tuple     Tuple of dictionaries: input_args and ids