code: def qualify(workers, qualification, value, by_name, notify, sandbox):
      
      if not (workers and qualification and value):
          raise click.BadParameter(
              "Must specify a qualification ID, value/score, and at least one worker ID"
          )
      mturk = _mturk_service_from_config(sandbox)
      if by_name:
          result = mturk.get_qualification_type_by_name(qualification)
          if result is None:
              raise click.BadParameter(
                  'No qualification with name "{}" exists.'.format(qualification)
              )
  
          qid = result["id"]
      else:
          qid = qualification
  
      click.echo(
          "Assigning qualification {} with value {} to {} worker{}...".format(
              qid, value, len(workers), "s" if len(workers) > 1 else ""
          )
      )
      for worker in workers:
          if mturk.set_qualification_score(qid, worker, int(value), notify=notify):
              click.echo("{} OK".format(worker))
  
      # print out the current set of workers with the qualification
      results = list(mturk.get_workers_with_qualification(qid))
  
      click.echo("{} workers with qualification {}:".format(len(results), qid))
  
      for score, count in Counter([r["score"] for r in results]).items():
          click.echo("{} with value {}".format(count, score))
docs: Assign a qualification to 1 or more workers