class_docstr: Orders are never automatically canceled.
      
code: def __init__(self):
      self.warn_on_cancel = False
  
file_path: zipline/zipline/finance/cancel_policy.py
imports: import abc
  from abc import abstractmethod
  from six import with_metaclass
  from zipline.gens.sim_engine import SESSION_END
label_desc: Use image node_id 1 to create a new NeverCancel object from inherited base classes: CancelPolicy with example: obj = NeverCancel()