code: def file_writer(file_name=None):
      # Create writer object based on file_name
      writer = (
          open(file_name, "aw") if file_name is not None else sys.stdout
      )
      # yield the writer object for the actual use
      yield writer
      # If it is file, then close the writer object
      if file_name != None:
          writer.close()
  
file_path: h2ogpt/models/gpu_mem_track.py
imports: import gc
  import datetime
  import inspect
  import torch
  import numpy
  import contextlib, sys
label_desc: Use image node_id 2 for calling a global function with example usage: file_writer(file_name) without return types