问题描述
我是 Python 新手，想要实现快速对象序列化.我尝试使用json，但是太慢了，也尝试使用marshall模块，但是marshall序列化的对象大小是pickle的6-7倍，所以我决定在我的项目中使用pickle.我读了关于 cPickle 模块的文章，读得很快，但是在 python 3 中没有这样的模块，文档说名为 _pickle 的模块是用 C 编写的.所以在我的项目中我使用
I am new in python and want implement fast object serialization. I was trying to use json, but it was too slow, also was trying to use marshall module, but the size of the objects serialized by marshall 6-7 times more than pickle, so i decided to use pickle in my project. I read about cPickle module, read that it quite fast, but there is no such module in python 3 and docs says that module named _pickle is written in C. So in my projects i use
import _pickle as pickle
pickle 和 _pickle 有什么区别吗?如何实现更快的对象序列化/反序列化?
Is any difference between pickle and _pickle? How i can implement faster objects serialization/deserialization?
推荐答案
pickle 模块 已经 导入 _pickle(如果可用).它是 pickle 模块的 C 优化版本，透明使用.
The pickle module already imports _pickle if available. It is the C-optimized version of the pickle module, and is used transparently.
来自 pickle.py代码>源代码:
From the pickle.py source code:
# Use the faster _pickle if possible
try:
from _pickle import *
except ImportError:
Pickler, Unpickler = _Pickler, _Unpickler
以及来自 pickle 模块文档:
and from the pickle module documentation:
pickle 模块有一个用 C 编写的透明优化器 (_pickle).只要可用就使用它.否则使用纯 Python 实现.
在 Python 2 中，_pickle 被称为 cPickle，但已更新以允许透明使用作为实现细节.
In Python 2, _pickle was known as cPickle, but has been updated to allow the transparent use as an implementation detail.
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