code: def db_value(self, value):
      if value and isinstance(value, _datetime.datetime):
          return value.isoformat()
      return super().db_value(value)
  
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 1 for calling the ISODateTimeField obj's underlying member method code with example usage: obj.db_value(value) and returns: super, value