code: def err(msg=""):
      """Helper function for printing to stderr."""
      print(msg, file=sys.stderr)
  
file_path: h2o-3/h2o-py/h2o/utils/debugging.py
imports: import inspect
  import re
  import sys
  from types import ModuleType
  from h2o.exceptions import H2OJobCancelled, H2OSoftError
  from h2o.utils.compatibility import *
label_desc: Use image node_id 2 for calling a global function with example usage: err(msg) without return types