code: def _init_value(actual_name: str, def_val: Any) -> Any:
      env_val = _get_env_val(actual_name)
      return env_val if env_val else def_val
  
file_path: lets-plot/python-package/lets_plot/_global_settings.py
imports: import os
  from typing import Any
  from ._version import __version__
label_desc: Use image node_id 1 for calling a global function with example usage: _init_value(actual_name, def_val) and returns: unknown