code: def _get_out_file():
      return _out_file
  
file_path: nni/nni/runtime/tuner_command_channel/legacy.py
imports: import logging
  import os
  import threading
  from .command_type import CommandType
label_desc: Use image node_id 3 for calling a global function with example usage: _get_out_file() and returns: _out_file