[英]ValueError: unsupported pickle protocol: 3, python2 pickle can not load the file dumped by python 3 pickle?
[英]Javascript can load Python pickle dumped string but not file
请看下面的测试代码,我可以使用jpickle库将Python pickle的转储字符串解码回来。
(base):~/python
Python 3.7.3 (default, Mar 27 2019, 16:54:48)
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pickle
>>> pickle.dumps('Hello Python!')
b'\x80\x03X\r\x00\x00\x00Hello Python!q\x00.'
>>>
(base)~$ node
> const jpickle = require('jpickle');
undefined
> jpickle.loads('\x80\x03X\r\x00\x00\x00Hello Python!q\x00.')
'Hello Python!'
当我尝试将腌制的字符串写入文件时,无法将其重新加载到nodejs中。 我这是怎么了 谢谢!
python代码:
import pickle
with open('test.dat', 'wb') as fout:
pickle.dump('Hello Python!', fout)
JS:
const fs = require('fs');
const jpickle = require('jpickle');
const binary = fs.readFileSync('test.dat');
const data = jpickle.loads(binary)
console.log(data)
错误消息:
node_modules/jpickle/lib/jpickle.js:341
throw "Unhandled opcode '" + opcode + "'";
^
Unhandled opcode '128'
package.json中的jpickle,需要从GitHub安装,这是最新版本:
"jpickle": "git+https://github.com/jlaine/node-jpickle.git"
}
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