import shelvedef CreateData():    try:        db = shelve.open('shelve_test')        # key与value必须是字符串        db['int'] = 1        db['float'] = 2.3        db['string'] = "I like python."        db['key'] = 'value'    finally:        db.close()def LoadData():                       #这个可以另外写一个.py文件去读取    db = shelve.open('shelve_test')    for item in db.items():        print (item)    print(db['int'])    print(db['float'])    print(db['string'])    print(db['key'])    db.close()if __name__ == '__main__':    CreateData()    LoadData()

shelve模块比pickle模块简单，只有一个open函数，返回类似字典的对象，可读可写

 

pickle 写: 以写方式打开一个文件描述符，调用pickle.dump把对象写进去

import pickledn = {'baidu':'www.baidu.com','qq':'www.qq.com','360':'www.360.cn'}name = ['mayun','mahuateng','liyanhong']f = open('a.txt','wb')  #‘wb'用二进制写入pickle.dump(dn,f)      ##写一个对象pickle.dump(name,f)  ##再写一个对象f.close() 读：以读的方式打开文件描述符，调用pickle.load加载对象f = open('a.txt','rb')    #‘wb'用二进制读取pickle.load(f)             ##加载一个对象pickle.load(f)             ##加载另一个对象f.close()