code: def get_term_environment_variable() -> str:
      "Return the $TERM environment variable."
      return os.environ.get("TERM", "")
  
imports: from __future__ import annotations
  import os
  import signal
  import sys
  import threading
  from collections import deque
  from typing import Callable, ContextManager, Dict, Generator, Generic, TypeVar, Union
  from wcwidth import wcwidth
label_desc: Use image node_id 8 for calling a global function with example usage: get_term_environment_variable() and returns: os