JSON字符串索引必须是整数
问题描述:
这个主题有很多问题,但大多数人似乎忘记了拨打json.loads
。JSON字符串索引必须是整数
这是我的例子:
import json
json_input = '{ "ar": { "articles": { "12345": {"title": "first title" } , "67890": {"title": "another title" } } } } '
data = json.loads(json_input)
for article in data['ar']['articles']:
print(article['title'])
打印调用失败,出现错误:
TypeError: string indices must be integers
我怎样才能解决这个问题?
答
您目前正在打印什么是文章字典的关键,而不是文章的标题本身。如果你在你的例子打印的文章,它会打印键
In [6]: for article in data['ar']['articles']:
print(article)
...:
67890
12345
要打印的文章的标题,重复在字典中的项目:
In [1]: import json
In [2]: json_input = '{ "ar": { "articles": { "12345": {"title": "first title" } , "67890": {"title": "another title" } } } } '
In [3]: data = json.loads(json_input)
In [4]: for article in data['ar']['articles'].values():
...: print(article['title'])
...:
another title
first title
总是发布完整回溯...这将更有帮助:) – 2015-02-07 19:52:56