我无法弄清楚如何循环一个深度超过1级的JSON对象。对象是:
{
"data":[
{
"id":"251228454889939/insights/page_fan_adds_unique/day",
"name":"page_fan_adds_unique",
"period":"day",
"values":[
{
"value":9,
"end_time":"2012-05-29T07:00:00+0000"
},
{
"value":5,
"end_time":"2012-05-30T07:00:00+0000"
}
],
"title":"Daily New Likes",
"description":"Daily The number of new people who have liked your Page (Unique Users)"
},
{
"id":"251228454889939/insights/page_fan_adds/day",
"name":"page_fan_adds",
"period":"day",
"values":[
{
"value":9,
"end_time":"2012-05-29T07:00:00+0000"
},
{
"value":5,
"end_time":"2012-05-30T07:00:00+0000"
}
],
"title":"Daily New Likes",
"description":"Daily The number of new people who have liked your Page (Total Count)"
}
]
}
代码:
def parseJsonData(data):
output_json = json.loads(data)
for i in output_json:
print i
for k in output_json[i]:
print k
为什么我无法访问像output_json[data][id]
这样的对象?
如果我尝试这个,我会收到错误:
string indice必须是整数
答案 0 :(得分:5)
由于您的“数据”键实际上是一个对象列表,因此您无法直接通过其“id”字段访问这些项目。您需要通过列表索引访问每个项目,例如:
output_json["data"][0]["id"]
现在,如果你想要做的是能够通过“id”字段索引“数据”的成员作为键,你可以重新格式化你的数据:
# make "data" a dict {id: item, }, instead of list [item1, item2, ...]
output_json['data'] = dict((item['id'], item) for item in json_data['data'])
print output_json['data']
# {'251228454889939/insights/page_fan_adds_unique/day': ...
print output_json['data']['251228454889939/insights/page_fan_adds_unique/day']
# {'description': 'Daily The number of new p ...
# ways to loop over "data"
for id_, item in output_json['data'].iteritems():
print id_, item
for item in output_json['data'].itervalues():
print item
否则你要做的就是循环“数据”,因为索引和对象之间没有真正的相关性:
for item in output_json["data"]:
print item['id']
# 251228454889939/insights/page_fan_adds_unique/day
# 251228454889939/insights/page_fan_adds/day
答案 1 :(得分:2)
您粘贴的内容不是有效的JSON。有一个无与伦比的[后“数据”。
基于此,我猜可能数据不是你想象的那样。如果output_json [data]的值是列表,那么您将无法访问output_json[data][id]
。相反,你必须做output_json[data][0][id]
之类的事情,其中[0]访问列表中的第一项。