code: def _cached_log_stream(filename):
      return open(filename, "a")
  
imports: import os
  import sys
  import time
  import functools
  import logging
  from contextlib import contextmanager
  from functools import wraps
  import numpy
  import torch.nn
  import torch
label_desc: Use image node_id 2 for calling a global function with example usage: _cached_log_stream(filename) and returns: open