code: def __contains__(self, key):
      try:
          self[key]
          return True
      except KeyError:
          return False
  
imports: import functools
  import inspect
  import itertools
  from operator import attrgetter
  from typing import Any
  from gluonts.pydantic import pydantic, deep_update
label_desc: Use image node_id 8 for calling the Settings obj's underlying member method code with example usage: obj.__contains__(key) and returns: True, False