python中json的操作示例

# -*- coding: cp936 -*-

import json

#构造一个示例数据，并打印成易读样式
j = {}
j["userName"]="admin"
j["realName"]="管理员"
j["cookie"]="afasfasfasdfasdfasf"
print json.dumps(j, ensure_ascii=False, indent=4)

#从文件中加载字符串
f=open(‘json.txt‘)
s=f.read()
f.close()
print s

#从字符串中反序列化成对象
jj = json.loads(s,‘gbk‘)
print jj[‘userName‘]
print json.dumps(jj,0,0,indent=4)

    dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True, allow_nan=True, cls=None, indent=None, separators=None, encoding=‘utf-8‘, default=None, sort_keys=False, **kw)

    loads(s, encoding=None, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw)