code: def get_log_name(self, now: Optional[datetime.datetime] = None):
      if now is None:
          now = self.get_log_time()
      return os.path.join(
          self.path, "log.%s.txt" % now.strftime("%Y%m%d")
      )
  
file_path: DeepKE/example/llm/CPM-Bee/src/cpm_live/utils/log.py
imports: import os
  import sys
  from typing import Any, Dict, Optional, Tuple, Union
  import datetime
  import json
  import logging
  import bmtrain
label_desc: Use image node_id 3 for calling the LogManager obj's underlying member method code with example usage: obj.get_log_name(now) and returns: os