一 Json
json语法：
1） string：value 可以看做是json的最小单位，json由string:value的集合组成，其中value中可以嵌套string:value；
2） string为双引号包围的unicode字符串，特殊符号需要\来转义；
3） value可以为string:value，array，string，number，true，false，null；
一个实例：
{
"firstName":"John",
"lastName" :"Smith",
"adress":{
"streetAddress":"21 2nd Street",
"city":"New York",
"state":"NY",
"postalCode":10021
},
"phoneNumbers":[
"212 555-1234",
"646 555-4567"
]
}
二 python 与 json
三 python的json模块
import json testStr = ''' { "firstName":"John", "lastName" :"Smith", "adress":{ "streetAddress":"21 2nd Street", "city":"New York", "state":"NY", "postalCode":10021 }, "phoneNumbers":[ "212 555-1234", "646 555-4567" ]} ''' # Deserialize s (a str or unicode instance containing a JSON document) to a Python object. obj = json.loads(testStr) print( " firstName: " + obj[ " firstName "]) print( " city: " + obj[ " adress "][ " city "]) print( " phoneNumbers: " + str(obj[ " phoneNumbers "])) # Serialize obj to a JSON formatted str. str = json.dumps(obj,indent=2) print(str) the output: firstName:John city:New York phoneNumbers:[u ' 212 555-1234 ', u ' 646 555-4567 '] { " lastName ": " Smith ", " phoneNumbers ": [ " 212 555-1234 ", " 646 555-4567 " ], " adress ": { " postalCode ": 10021, " city ": " New York ", " streetAddress ": " 21 2nd Street ", " state ": " NY " }, " firstName ": " John "}
完!