code: def __post_init__(self):
      now = datetime.datetime.utcnow()
      rand_suffix = base64.b32encode(os.urandom(5)).decode("ascii")
      self.run_id = now.strftime("%y%m%d%H%M%S") + rand_suffix
      self.created_at = str(now)
  
file_path: evals/evals/base.py
imports: import base64
  import datetime
  import os
  from pathlib import Path
  from typing import TYPE_CHECKING, Any, Dict, Optional, Sequence
label_desc: Use image node_id 1 for calling the RunSpec obj's underlying member method code with example usage: obj.__post_init__() without return types