python-标准库pickle模块

1. python-标准库pickle模块

• pickle模块实现了对一个Python对象结构的二进制序列化和反序列化。

• 主要用于将对象持久化到文件存储。

• pickle模块主要有两个函数：

  • dump() 把对象保存到文件中（序列化），使用load()函数从文件中读取（反序列化）
  • dumps() 把对象保存到内存中，使用loads()函数读取

• 示例

  • 序列化

    import pickle
    computer = {"主机":5000,"显示器":1000,"鼠标":60,"键盘":150}
    with open("data.pkl", "wb") as f:
    	pickle.dump(computer, f)
    

  • 反序列化

    import pickle
    with open("data.pkl", "rb") as f:
    	print(pickle.load(f))
    

2. 案例

#!/usr/bin/env python3
# _*_ coding: utf-8 _*_
# Author:shichao
# File: .py

import pickle

#  json把一个对象写入到一个文件里面去
computer  = {
    "name":"汪峰",
    "age": 18,
    "hobby":"上头条",
    "wife":{
        "name":'子怡',
        "age":19,
        "hobby":["唱歌","跳舞","演戏"]
    }
}

with open("computer.txt", mode="wb") as f:
	pickle.dump(computer, f)


import pickle
with open("computer.txt", "rb") as f:
	print(pickle.load(f))