[英]Index JSON searches python
我有一個從URL獲得的下一個JSON:
[{
"id": 1,
"version": 23,
"external_id": "2312",
"url": "https://example.com/432",
"type": "typeA",
"date": "2",
"notes": "notes",
"title": "title",
"abstract": "dsadasdas",
"details": "something",
"accuracy": 0,
"reliability": 0,
"severity": 12,
"thing": "32132",
"other": [
"aaaaaaaaaaaaaaaaaa",
"bbbbbbbbbbbbbb",
"cccccccccccccccc",
"dddddddddddddd",
"eeeeeeeeee"
],
"nana": 8
},
{
"id": 2,
"version": 23,
"external_id": "2312",
"url": "https://example.com/432",
"type": "typeA",
"date": "2",
"notes": "notes",
"title": "title",
"abstract": "dsadasdas",
"details": "something",
"accuracy": 0,
"reliability": 0,
"severity": 12,
"thing": "32132",
"other": [
"aaaaaaaaaaaaaaaaaa",
"bbbbbbbbbbbbbb",
"cccccccccccccccc",
"dddddddddddddd",
"eeeeeeeeee"
],
"nana": 8
}]
我的代碼:
import json
import urllib2
data = json.load(urllib2.urlopen('http://someurl/path/to/json'))
print data
我想知道如何訪問例如“ id”等於2的對象的“抽象”部分。 “ id”部分是唯一的,因此我可以使用id來索引我的搜索。
謝謝!
這是一種方法。 您可以通過生成器表達式創建生成器,調用next
對該生成器進行一次迭代,然后返回所需的對象。
item = next((item for item in data if item['id'] == 2), None)
if item:
print item['abstract']
編輯 :如果您想訪問列表中具有給定鍵值(例如, id == 2
)的所有元素,則可以執行以下兩項操作之一。 您可以通過理解來創建列表(如其他答案所示),也可以更改我的解決方案:
my_gen = (item for item in data if item['id'] == 2)
for item in my_gen:
print item
在循環中, item
將遍歷列表中滿足給定條件(在此, id == 2
)的那些項目。
您可以使用列表理解來過濾:
import json
j = """[{"id":1,"version":23,"external_id":"2312","url":"https://example.com/432","type":"typeA","date":"2","notes":"notes","title":"title","abstract":"dsadasdas","details":"something","accuracy":0,"reliability":0,"severity":12,"thing":"32132","other":["aaaaaaaaaaaaaaaaaa","bbbbbbbbbbbbbb","cccccccccccccccc","dddddddddddddd","eeeeeeeeee"],"nana":8},{"id":2,"version":23,"external_id":"2312","url":"https://example.com/432","type":"typeA","date":"2","notes":"notes","title":"title","abstract":"dsadasdas","details":"something","accuracy":0,"reliability":0,"severity":12,"thing":"32132","other":["aaaaaaaaaaaaaaaaaa","bbbbbbbbbbbbbb","cccccccccccccccc","dddddddddddddd","eeeeeeeeee"],"nana":8}]"""
dicto = json.loads(j)
results = [x for x in dicto if "id" in x and x["id"]==2]
然后,您可以打印“抽象”值,如下所示:
for result in results:
if "abstract" in result:
print result["abstract"]
import urllib2
import json
data = json.load(urllib2.urlopen('http://someurl/path/to/json'))
your_id = raw_input('enter the id')
for each in data:
if each['id'] == your_id:
print each['abstract']
在上面的代碼中,數據為list,每個數據都是dict,您可以輕松訪問dict對象。
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