code: def __init__(self):
      self._best = None
  
imports: from __future__ import annotations
  from collections import defaultdict
  import logging
  import math
  from typing import Any, NamedTuple
  import numpy
  from scipy.special import erf
  from typing_extensions import Literal
  import nni
  from nni.common.hpo_utils import Deduplicator, OptimizeMode, format_search_space, deformat_parameters, format_parameters
  from nni.tuner import Tuner
  from nni.utils import extract_scalar_reward
  from .None import random_tuner
label_desc: Use image node_id 1 to create a new BestLiar object  with example: obj = BestLiar()