我正在嘗試為列表中的每個(gè)對(duì)象提取一個(gè)特定的字段，它在 JSON 中的值，到目前為止，我已經(jīng)開始一個(gè)一個(gè)地獲取它們，但是如果有更多的對(duì)象具有相同的字段，它需要提取所有這些字段被添加到 JSON 中。這是 JSON：[{ "took" : 1023, "timed_out" : false, "_shards" : { "total" : 5, "successful" : 5, "skipped" : 0, "failed" : 0 }, "hits" : { "total" : 1, "max_score" : 114.88808, "hits" : [ { "_index" : 1, "_type" : "doc", "_id" : 1, "_score" : 114.88808, "_source" : { "message" : "Error something happened" } } ] } }, { "took" : 1023, "timed_out" : false, "_shards" : { "total" : 5, "successful" : 5, "skipped" : 0, "failed" : 0 }, "hits" : { "total" : 1, "max_score" : 114.88808, "hits" : [ { "_index" : 2, "_type" : "doc", "_id" : 2, "_score" : 114.88808, "_source" : { "message" : "Something else" } } ] } }]我正在嘗試從兩個(gè)對(duì)象的字段中獲取值message，就我提到的而言，我設(shè)法像這樣一個(gè)一個(gè)地完成：data = json.loads(open('test.json').read())extracted_data = data[0]['hits']['hits'][0]['_source']['message']
3 回答
富國滬深
TA貢獻(xiàn)1790條經(jīng)驗(yàn) 獲得超9個(gè)贊
以下
data = [{
"took" : 1023,
"timed_out" : 'false',
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 114.88808,
"hits" : [
{
"_index" : 1,
"_type" : "doc",
"_id" : 1,
"_score" : 114.88808,
"_source" : {
"message" : "Error something happened"
}
}
]
}
},
{
"took" : 1023,
"timed_out" : 'false',
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 114.88808,
"hits" : [
{
"_index" : 2,
"_type" : "doc",
"_id" : 2,
"_score" : 114.88808,
"_source" : {
"message" : "Something else"
}
}
]
}
}
]
messages = [x['hits']['hits'][0]['_source']['message'] for x in data]
print(messages)
輸出
['Error something happened', 'Something else']
繁星coding
TA貢獻(xiàn)1797條經(jīng)驗(yàn) 獲得超4個(gè)贊
嘗試這個(gè)
res = [y['_source']['message'] for x in data for y in x['hits']['hits']]
print(res)
輸出：
['Error something happened', 'Something else']
呼啦一陣風(fēng)
TA貢獻(xiàn)1802條經(jīng)驗(yàn) 獲得超6個(gè)贊
一個(gè)簡單的 for 循環(huán)就可以解決問題：
for d in data :
extracted_data.append(d['hits']['hits'][0]['_source']['message'])
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