serialization_utils.py 文件源码

def dumps_with_persistent_ids(obj, protocol=None):
    """
    Performs a pickle dumps on the given object, substituting all references to
    a TradingEnvironment or AssetFinder with tokenized representations.

    All arguments are passed to pickle.Pickler and are described therein.
    """
    file = BytesIO()
    pickler = pickle.Pickler(file, protocol)
    pickler.persistent_id = _persistent_id
    pickler.dump(obj)
    return file.getvalue()