code: def lookup(self, strategy):
      if self.dummy:
          return None
  
      if self.initialised == -1:
          self.initialise()
  
      if self.initialised == 0:  # failure
          return None
  
      try:
          data = _CookieSchema.get(_CookieSchema.strategy == strategy)
          cookie = _pkl.loads(data.cookie_bytes)
          return {
              "cookie": cookie,
              "age": _datetime.datetime.now() - data.fetch_date,
          }
      except _CookieSchema.DoesNotExist:
          return None
  
imports: import peewee
  from threading import Lock
  import os
  import appdirs
  import atexit
  import datetime
  import pickle
  from .utils import get_yf_logger
label_desc: Use image node_id 4 for calling the _CookieCache obj's underlying member method code with example usage: obj.lookup(strategy) and returns: None, None, dict, None