在Python中读取JSON对象时遇到问题

Question

我有一个JSON对象，尝试使用Python读取，但出现了一些问题。 我有一个名为“ test.txt”的文件，其中包含接收到的JSON对象。 “ test.txt”的内容如下：

{ "Sections": {"Now": "Thursday 3 February 2011 08:31",  "Section": [ { "Article": [ {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "Category 5 cyclone slams into flood-hit Queensland", "hasMore": "true", "ID": 44871, "important": "False", "likesCounter": 0, "photoCounter": 0, "time": "20:58", "timeStamp": "2\/2\/2011 8:59:37 PM", "timeStatus": "True", "Title": "Category 5 cyclone slams into flood-hit Queensland", "Type": "Politics", "videoCounter": 0, "viewsCounter": 2 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "The White House: Egypt must begin a peaceful and orderly transition of power immediately", "hasMore": "false", "ID": 44868, "important": "True", "likesCounter": 0, "photoCounter": 0, "time": "20:51", "timeStamp": "2\/2\/2011 8:52:28 PM", "timeStatus": "True", "Title": "The White House: Egypt must begin a peaceful and orderly transition of power immediately", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "Bazzi: Berri endeavors to facilitate cabinet formation", "hasMore": "true", "ID": 44866, "important": "False", "likesCounter": 0, "photoCounter": 0, "time": "20:47", "timeStamp": "2\/2\/2011 8:48:18 PM", "timeStatus": "True", "Title": "Bazzi: Berri endeavors to facilitate cabinet formation", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "Saker via Future News: Opening files era has ended, Gen. Aoun can\u0027t open any corruption files since his allies were the pioneers of corruption", "hasMore": "false", "ID": 44865, "important": "False", "likesCounter": 0, "photoCounter": 0, "time": "20:41", "timeStamp": "2\/2\/2011 8:45:36 PM", "timeStatus": "True", "Title": "Saker via Future News: Opening files era has ended, Gen. Aoun can\u0027t open any corruption files since his allies were the pioneers of corruption", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "White House deplores violence in Egypt", "hasMore": "true", "ID": 44857, "important": "False", "likesCounter": 0, "photoCounter": 0, "time": "20:28", "timeStamp": "2\/2\/2011 8:29:26 PM", "timeStatus": "True", "Title": "White House deplores violence in Egypt", "Type": "Politics", "videoCounter": 0, "viewsCounter": 1 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "Baabda sources via MTV: President Suleiman works on a consensus curriculum hoping for the formation of a national unity cabinet, if this does not happen, the cabinet will be political inlaid with technocrats", "hasMore": "false", "ID": 44855, "important": "False", "likesCounter": 0, "photoCounter": 0, "time": "20:20", "timeStamp": "2\/2\/2011 8:23:14 PM", "timeStatus": "True", "Title": "Baabda sources via MTV: President Suleiman works on a consensus curriculum hoping for the formation of a national unity cabinet, if this does not happen, the cabinet will be political inlaid with technocrats", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "An American senior official to Reuters: expects pressure on Mubarak by the army after street violence", "hasMore": "false", "ID": 44853, "important": "True", "likesCounter": 0, "photoCounter": 0, "time": "20:18", "timeStamp": "2\/2\/2011 8:20:14 PM", "timeStatus": "True", "Title": "An American senior official to Reuters: expects pressure on Mubarak by the army after street violence", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 }, {"audioCounter": 0, "commentsCounter": 0, "Exceprt": "The disappearance of the Al-Arabia correspondence Ahmed Abdullah in Egypt after clashing with Mubarak supporters", "hasMore": "false", "ID": 44851, "important": "True", "likesCounter": 0, "photoCounter": 0, "time": "20:17", "timeStamp": "2\/2\/2011 8:18:28 PM", "timeStatus": "True", "Title": "The disappearance of the Al-Arabia correspondence Ahmed Abdullah in Egypt after clashing with Mubarak supporters", "Type": "Politics", "videoCounter": 0, "viewsCounter": 0 } ], "ID": 22, "Name": "EN Live", "totalNews": 2997 } ] }}

我的python脚本：

import json;
f = open("test.txt");
d = json.load(f);
for i in d:
    print(i);

我的输出：

Sections

这就是我所得到的。 我想最后列出“文章”及其属性。 我尝试查看Python的官方文档，但发现它有点模糊。

谢谢

Answer 1

在您的for i in d循环中，您正在循环字典的键。 该词典仅包含一个顶级关键字，即“ Sections”，这就是为什么您仅看到该输出的原因。

我不完全了解JSON的结构，但看来您想要这样的东西：

for aritcle in d['Sections']['Section'][0]['Article']:
      print article

那将打印出所有文章。

Answer 2

在您的JSON数据中，Sections是最外面的数据，仅出现一次。 因此输出也是预期的输出，因为json.load会将列表解析为python对象。

您可以通过对Sections进行for循环来访问section成员，然后对每个section进行另一个for循环以获取每篇文章。

Answer 3

应该是：

for i in d.items():
    print(i);

或者是：

for k,v in d.items():
    print k, v

将键和值放入单独的变量中。

d是python字典，您必须迭代其键和值。