code: def __init__(self):
      er = dict(code=599, message="Request Error", description="")
      super(self.__class__, self).__init__(er)
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import collections
  from datetime import datetime, timedelta
  import time
  import json
  import threading
  import oandapy
  import requests
  import backtrader
  from backtrader.metabase import MetaParams
  from backtrader.utils.py3 import queue, with_metaclass
  from backtrader.utils import AutoDict
label_desc: Use image node_id 1 to create a new OandaRequestError object from inherited base classes: oandapy with example: obj = OandaRequestError()