shelve模块是一个简单的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
1.shelve
#!/usr/bin/env python #-*- coding:utf-8 –*- import shelve d = shelve.open("shelve_test") l1=["a1"] l2=["a2"] l3=["a3"] d["k1"] = l1 d["k2"] = l2 d["k3"] = l3 d.close() >>> import shelve >>> a = shelve.open("shelve_test") >>> a.get("k1") [‘a1‘] >>> a.get("k2") [‘a2‘] >>> a.get("k3") [‘a3‘] >>> a.get("k1") [‘a1‘]
2.pick
import pickle l1=["a1"] l2=["a2"] l3=["a3"] with open("pickle","wb") as f: pickle.dump(l1,f) pickle.dump(l2, f) pickle.dump(l3, f) >>> import pickle >>> f = open("pickle","rb") >>> pickle.load(f) #只能按顺序读取 [‘a1‘] >>> pickle.load(f) [‘a2‘] >>> pickle.load(f) [‘a3‘] >>> pickle.load(f)
本文出自 “AMY” 博客,请务必保留此出处http://amy2015.blog.51cto.com/11407620/1771999
原文地址:http://amy2015.blog.51cto.com/11407620/1771999