pickle.load() 時報錯 raise AttributeError(attr + " not found")

1. 問題：我用python3 的pickle.load() 時報錯。錯誤信息如下代碼，
2. 錯誤日誌：

Traceback (most recent call last):
  File "./ncf.py", line 179, in main
    train_dataset = pickle.load(save_traind)
  File "/anaconda3-5.0.1/lib/python3.6/site-packages/scipy/sparse/dok.py", line 244, in __setitem__
    if (isintlike(i) and isintlike(j) and 0 <= i < self.shape[0]
  File "/anaconda3-5.0.1/lib/python3.6/site-packages/scipy/sparse/base.py", line 576, in __getattr__
    raise AttributeError(attr + " not found")
AttributeError: shape not found

3. 找到了對策：原來是dump 的時候需要加參數 protocol=0
4. 具體的：

abc_file = list(XXX)
with open('abc_asve.pkl','wb') as sf:
  pickle.dump(abc_file, sf, protocol=0)
with open('abc_save.pkl', 'rb') as rf:
  abc_read = pickler.load(sf)

Done!

參考 ：
https://github.com/joblib/joblib/issues/177