code: def __init__(self, checkpoint_list: CheckpointList):
      self.checkpoint_list = checkpoint_list
  
imports: import datetime
  import os
  import io
  import tempfile
  import json
  import sys
  import html
  from typing import Optional, Dict, Any, List, BinaryIO, TYPE_CHECKING, MutableSequence
  from .None import console
  from .json import CustomJSONEncoder
  from .metadata import rfc3339_datetime, parse_rfc3339
  from .validate import check_path
label_desc: Use image node_id 1 to create a new CheckpointListMetrics object  with example: obj = CheckpointListMetrics(checkpoint_list)