使用python解析Json字符串-获取Json字符串关键字

 import json

 data = {
     "statusCode": 0,
     "data": {
         "totoal": "",
         "height": "5.97",
         "weight": "10.30",
         "age": ""
     },
     "msg": "成功"
 }

 #dumps:把字典转换为json字符串
 s = json.dumps(data)
 print s

 #loads:把json转换为dict
 s1 = json.loads(s)
 print s1

 print s1["statusCode"]

 print s1["data"]["age"]