Python编程：shelve模块-持久化python数据

持久化任何python的数据格式，对pickle的一个封装

import shelve

# 准备数据
class Test(object):
    def __init__(self, n):
        self.n = n

t1 = Test(123)
t2 =Test(456)

info = {"name": "Jimi", "age": 23}

names = ["Alex", "Tom", "Jack"]

# 写入
d = shelve.open("shelve")  # 打开一个文件

d["names"] = names  # 持久化列表
d["t1"] = t1  # 持久化类
d["t2"] = t2
d["info"] = info  #持久化字典

d.close()


# 读取
d = shelve.open("shelve")  # 打开一个文件

print(d.get("info"))
print(d.get("names"))
print(d.get("t1"))

d.close()

"""
{'age': 23, 'name': 'Jimi'}
['Alex', 'Tom', 'Jack']

"""