code: def __init__(self):
      self.order = None
  
file_path: backtrader/samples/order-close/close-daily.py
imports: from __future__ import absolute_import, division, print_function
  import argparse
  import datetime
  import random
  import backtrader
  import backtrader.feeds
  from backtrader.utils.py3 import with_metaclass
label_desc: Use image node_id 1 to create a new St object from inherited base classes: bt with example: obj = St()