英文:
Failed to open a file with pickle
问题
我已将一组Pandas时间戳对的字典保存在pickle文件中，使用以下代码：
pickle.dump(doublesplit_list, open("doublesplit_list.p", "wb"))
然后，我尝试使用以下代码加载它：
doublesplit_list = pickle.load(open('doublesplit_list.p', 'rb'))
然后，我遇到了以下错误：
TypeError Traceback (most recent call last)
Input In [22], in <cell line: 1>()
----> 1 doublesplit_list = pickle.load(open('doublesplit_list.p', 'rb'))
File D:\Porgrams\Conda\lib\site-packages\pandas\_libs\tslibs\timestamps.pyx:132, in pandas._libs.tslibs.timestamps._unpickle_timestamp()
TypeError: _unpickle_timestamp() takes exactly 3 positional arguments (4 given)
我该怎么办？
英文:
I've saved a dictionary of dictionaties of pairs of pandas timestamps in the pickle file with
pickle.dump(doublesplit_list, open( "doublesplit_list.p", "wb" ))
Then I tried to use
doublesplit_list = pickle.load(open('doublesplit_list.p', 'rb'))
And then I got
TypeError Traceback (most recent call last)
Input In [22], in <cell line: 1>()
----> 1 doublesplit_list = pickle.load(open('doublesplit_list.p', 'rb'))
File D:\Porgrams\Conda\lib\site-packages\pandas\_libs\tslibs\timestamps.pyx:132, in pandas._libs.tslibs.timestamps._unpickle_timestamp()
TypeError: _unpickle_timestamp() takes exactly 3 positional arguments (4 given)
What should I do?
答案1
得分: 1
根据错误消息显示，错误发生在pandas\_libs\tslibs\timestamps.pyx文件的第132行，在_unpickle_timestamp()的定义中，错误消息告诉您它需要精确的3个位置参数，但提供了4个。
然而，从GitHub 存储库来看，这特定的行是这样的：
def _unpickle_timestamp(value, freq, tz, reso=NPY_FR_ns):
它的确接受4个参数，所以不应该出现错误消息，指出该函数需要精确的3个参数。即使传递了比应有的更多参数，错误消息也应该类似于 TypeError: _unpickle_timestamp() 接受3到4个位置参数（... 给定）。
我建议您检查一下本地机器上的该文件，看看它是否与GitHub 存储库中的内容匹配。这可能是与以前版本的兼容性问题。
英文:
From what the error message says, the error occurs in \lib\site-packages\pandas\_libs\tslibs\timestamps.pyx at line 132 in the definition of _unpickle_timestamp() and the error message for you reads that it takes exactly 3 positional args but 4 were given.
However, from the GitHub repo: that particular line is:
def _unpickle_timestamp(value, freq, tz, reso=NPY_FR_ns):
which does indeed take 4 args so you shouldn't have seen an error like that where it says that function takes exactly 3 args. Even if there was more args passed to it than it should have, the error message should've read like TypeError: _unpickle_timestamp() takes from 3 to 4 positional arguments (... given)
I suggest checking that particular file in your local machine and see if it matches with what is in the GitHub repo. It could be a compatibility issue with a previous version.
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