code: def is_future(x: Any) -> bool:
      return isinstance(x, FUTURES)
  
imports: import asyncio
  from concurrent import futures
  import functools
  import sys
  import types
  from tornado.log import app_log
  import typing
  from typing import Any, Callable, Optional, Tuple, Union
label_desc: Use image node_id 1 for calling a global function with example usage: is_future(x) and returns: isinstance