python - Python 3.7错误: Unsupported Pickle Protocol 5

Question

我正在尝试从RLLib(json didn't work as shown in this post)恢复一个 pickle 的配置文件，并得到以下错误:

config = pickle.load(open(f"{path}/params.pkl", "rb"))

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-28-c964561b863c> in <module>
----> 1 config = pickle.load(open(f"{path}/params.pkl", "rb"))

ValueError: unsupported pickle protocol: 5

Python版本= 3.7.0
如何在3.7中打开此文件？

Answer 1

使用pickle5或将其加载到python 3.8+中，然后使用protocol参数将其序列化为较低版本。