code: def is_in(vals):
      def validate(x):
          return x in vals
  
      return validate
  
imports: import contextlib
  import functools
  import operator
  import os
  import warnings
  import threading
  from copy import deepcopy
  from typing import Union, Dict
label_desc: Use image node_id 6 for calling a global function with example usage: is_in(vals) and returns: validate, unknown