shelve 模块

import shelve

info = {'age':18,'name':'wxx'}
info1 = {'age':16,'name':'cxx'}

d = shelve.open('db.shv')
d['wxx'] = info
d["cxx"] = info1
d.close()


d = shelve.open('db.shv',writeback=True)      #改文件
d['wxx']['age'] = 100
# print(d['wxx'])
d.close()


d = shelve.open('db.shv')    #在读
d['wxx']['age'] = 100

import shelve

info = {'age':18,'name':'wxx'}
info1 = {'age':16,'name':'cxx'}

d = shelve.open('db.shv')
d['wxx'] = info
d["cxx"] = info1
d.close()


d = shelve.open('db.shv',writeback=True)      #改文件
d['wxx']['age'] = 100
# print(d['wxx'])
d.close()


d = shelve.open('db.shv')    #在读
d['wxx']['age'] = 100
print(d['wxx'])
d.close()

　　

print(d['wxx'])
d.close()