如何在python 3中读取在python 2.7或3中被腌制的泡菜? [英] How to read pickle that was dupmed in either python 2.7 or 3, in python 3?

问题描述

• 我已阅读到可以读取在python 3中使用python 2.7转储的酱菜

• I have read that I can read pickles that were dumped in python 2.7 in python 3 using

content = pickle.load(o, encoding='latin1')

很明显，我可以使用

content = pickle.load(o)

我的问题是，我不知道我的酱菜的来源.可能是一个.

My problem is, I can't know the source of my pickle. It could be either one.

如何使用正确的方法测试要尝试读取的泡菜类型?

How can I test which type of pickle I am trying to read in order to use the correct method?

推荐答案

受@DeepSpace启发:

inspired by @DeepSpace:

def load(path):
    print(f"loading pkl: {os.path.abspath(path)}")
    assert os.path.isfile(path)
    try:
        with open(path, "rb") as f:
            content = pickle.load(f)
    except UnicodeDecodeError:  # pickle was created with python 2.7
        with open(path, "rb") as f:
            content = pickle.load(f, encoding='latin1')

    return content

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