code: def _is_true(value: Optional[str]) -> bool:
      if value is None:
          return False
      return value.upper() in ENV_VARS_TRUE_VALUES
  
imports: import os
  import re
  import typing
  from typing import Literal, Optional, Tuple
label_desc: Use image node_id 1 for calling a global function with example usage: _is_true(value) and returns: unknown, False