shelve模块

shelve是一个简单的k,v将内存数据通过文件持久化的模块，可以持久化任何pickle可支持的python数据格式，是pickle更上一层的封装

1. 存储数据

import shelve,datetime
dd = shelve.open('shelve_test')
info = {"age":25,'job':'it'}
name = ["zhangsan","lisi","wangwu","zhaoliu"]
dd["name"] = name
dd["info"] = info
dd["date"] = datetime.datetime.now()
dd.close()

 

2. 取回数据

import shelve,datetime
d = shelve.open('shelve_test')
print(d.get("name"))
print(d.get("info"))
print(d.get("date"))

 得到的结果如下：

['zhangsan', 'lisi', 'wangwu', 'zhaoliu']
{'age': 25, 'job': 'it'}
2017-08-17 09:47:43.473363