code: def enable_export_loglevel(func):
      # For running in both python and pytest, this decorator makes sure
      # log level env parameter will be changed.
      # Make raylet emit a log to raylet.err.
      os.environ["RAY_BACKEND_LOG_LEVEL"] = "info"
      return func
  
file_path: ray/python/ray/tests/test_raylet_output.py
imports: import glob
  import os
  import sys
  import pytest
  import ray
  from ray._private.test_utils import wait_for_condition
label_desc: Use image node_id 1 for calling a global function with example usage: enable_export_loglevel(func) and returns: func