code: def __init__(self):
      self.comminfo = dict()
      self.init()
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from backtrader.comminfo import CommInfoBase
  from backtrader.metabase import MetaParams
  from backtrader.utils.py3 import with_metaclass
  from .None import fillers
  from .None import fillers
label_desc: Use image node_id 1 to create a new BrokerBase object from inherited base classes:  with example: obj = BrokerBase()