遍歷python中的列表列表

Question

我正在從API中讀取json中的以下嵌套字典

{
 "result": [{
               "short_description": "I am getting bluescreen error",
               "sys_id": "39b5f8c2376ede007520021a54990e5c",
               "opened_at": "2016-04-04 05:19:53",
               "number":"INC0258523"
             },
             {
               "short_description": "laptop crashed with a blue screen",
               "sys_id": "da0095380f43d200a4f941fce1050eeb",
               "opened_at":"2016-04-25 06:33:52",
               "number":"INC0259067"
             }, 
             {
               "short_description": "Laptop not booting",
               "sys_id": "ecf9c9b00f43d200a4f941fce1050e17",
               "opened_at": "2016-04-25 06:07:16",
               "number": "INC0259061"
             }]
}

我需要根據兩個日期和兩個日期來過濾數據。 opened_at是包含日期信息的值。

到目前為止，我的嘗試如下

    url = "http://ip:port/api"

    response = urllib.urlopen(url)
    data = json.loads(response.read())
    print type(data)
    pattern = 'opened_at'
    element = '2016-04-25 06:33:19'
    with open('D:/Output.csv', 'wb') as f:  
        w = csv.DictWriter(f, data['result'][0].keys()) 
        w.writeheader()
        print type(data['result'])
        for key in data['result']:
            for v, val in data['result'].items():
                if v == pattern and val == element:
                    w.writerow(v)

我在運行代碼時遇到以下錯誤

AttributeError: 'list' object has no attribute 'items'

我知道data ['result']的類型是列表。任何幫助將不勝感激。 謝謝！

Answer 1

data['result']是字典的列表，您應該像下面這樣迭代它：

for d in data['result']:
    for k, v in d.items():

Answer 2

你需要這個

import json
al = """
{
 "result": [{
               "short_description": "I am getting bluescreen error",
               "sys_id": "39b5f8c2376ede007520021a54990e5c",
               "opened_at": "2016-04-04 05:19:53",
               "number":"INC0258523"
             },
             {
               "short_description": "laptop crashed with a blue screen",
               "sys_id": "da0095380f43d200a4f941fce1050eeb",
               "opened_at":"2016-04-25 06:33:52",
               "number":"INC0259067"
             }, 
             {
               "short_description": "Laptop not booting",
               "sys_id": "ecf9c9b00f43d200a4f941fce1050e17",
               "opened_at": "2016-04-25 06:07:16",
               "number": "INC0259061"
             }]
}
"""
myjson = json.loads(al)
for val in myjson['result']:
    print val['opened_at']
    for key, value in val.items():#change it to keys if required

Answer 3

實際上，“結果”是字典。 您可以通過在其上加上圓圈的“ {”和“}”來識別字典中的字典。 因此，這是詞典列表中的詞典！