Python 检查键/值是否在 JSON 中
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Check if key/value is in JSON
提问by Simon
With this code
有了这个代码
import sense
import json
sense.api_key = '...'
node = sense.Node.retrieve('........')
feed = node.feeds.retrieve('presence')
events = feed.events.list(limit=1)
result = json.dumps(events,indent=1)
print result
I get a JSON-Feed like this:
我得到一个这样的 JSON-Feed：
{
"links": {...},
"objects": [
{
"profile": "GenStandard",
"feedUid": ".....",
"gatewayNodeUid": ".....",
"dateServer": "2015-02-28T09:57:22.337034",
"geometry": null,
"data": {
"body": "Present",
"code": 200
},
"signal": "-62",
"dateEvent": "2015-02-28T09:57:22.000000",
"type": "presence",
"payload": "2",
"nodeUid": "....."
}
],
"totalObjects": 875,
"object": "list"
}
How can I check if 'body' is 'present' (or 'code' is '200')? My script should return TRUE or FALSE
如何检查“body”是否“存在”（或“code”是否为“200”）？我的脚本应该返回 TRUE 或 FALSE
UPDATE
更新
If I add this code as proposed in the answers it works fine:
如果我按照答案中的建议添加此代码，则它可以正常工作：
d=json.loads(result)
def checkJson(jsonContents):
bodyFlag = True if "body" in jsonContents["objects"][0]["data"] and jsonContents["objects"][0]["data"]["body"] == "Present" else False
return bodyFlag
print checkJson(d)
采纳答案by Alexandru Godri
You should also maybe check if the body key is actually there.
您还应该检查主体密钥是否确实存在。
def checkJson(jsonContents):
bodyFlag = True if "body" in jsonContents["objects"][0]["data"] and jsonContents["objects"][0]["data"]["body"] == "Present" else False
codeFlag = True if "code" in jsonContents["objects"][0]["data"] and jsonContents["objects"][0]["data"]["code"] == 200 else False
return bodyFlag or codeFlag
print checkJson(result)
回答by Padraic Cunningham
d = json.loads(results)
objs = d["objects"][0]
# see if any code is either == 200 or "body" is a key in the subdict
return any(x for x in (objs["data"]["code"] == 200,"body" in objs["data"]))
