code: def ping(config_file, profile, solver_def, json_output, request_timeout, polling_timeout):
      
  
      now = utcnow()
      info = dict(datetime=now.isoformat(), timestamp=datetime_to_timestamp(now), code=0)
  
      def output(fmt, **kwargs):
          info.update(kwargs)
          if not json_output:
              click.echo(fmt.format(**kwargs))
  
      def flush():
          if json_output:
              click.echo(json.dumps(info))
  
      try:
          _ping(config_file, profile, solver_def, request_timeout, polling_timeout, output)
      except CLIError as error:
          output("Error: {error} (code: {code})", error=str(error), code=error.code)
          sys.exit(error.code)
      except Exception as error:
          output("Unhandled error: {error}", error=str(error))
          sys.exit(127)
      finally:
          flush()
docs: Ping the QPU by submitting a single-qubit problem.