从python上的特定列表中提取元素

以下是要分析的模块：

('images\\Principales\\Screenshot_1.png', '{"categories":[{"name":"abstract_","score":0.00390625},{"name":"outdoor_","score":0.01171875},{"name":"outdoor_road","score":0.41796875}],"description":{"tags":["road","building","outdoor","scene","street","city","sitting","empty","light","view","driving","red","sign","intersection","green","large","riding","traffic","white","tall","blue","fire"],"captions":[{"text":"a view of a city street","confidence":0.83864323826716347}]},"requestId":"73fc14d5-653f-4a0a-a45a-e7a425580361","metadata":{"width":150,"height":153,"format":"Png"},"color":{"dominantColorForeground":"Grey","dominantColorBackground":"Grey","dominantColors":["Grey"],"accentColor":"274A68","isBWImg":false}}')

我需要提取“描述”后的所有元素，但我不知道如何做。。。（事实上，我需要这些元素：

"road", "building","outdoor","scene","street","city","sitting","empty","light","view","driving","red","sign","intersection","green","large","riding","traffic","white","tall","blue","fire"

我已经找了好几分钟了，但我不知道怎么做！我是学习“列表”元素的初学者，但我仍然很难理解

“For”循环只返回

'images\\Principales\\Screenshot\u 1.png'

，然后大的块就离开了

你有解决办法吗

谢谢你

编辑：

事实上，它实际上是JSON！感谢帮助我的人：） 为了提取第二个块中包含的所需元素，我简单地进行如下操作：

import json
ElementSeparate= '{"categories":[{"name":"abstract_","score":0.00390625},{"name":"outdoor_","score":0.01171875},{"name":"outdoor_road","score":0.41796875}],"description":{"tags":["road","building","outdoor","scene","street","city","sitting","empty","light","view","driving","red","sign","intersection","green","large","riding","traffic","white","tall","blue","fire"],"captions":[{"text":"a view of a city street","confidence":0.83864323826716347}]},"requestId":"73fc14d5-653f-4a0a-a45a-e7a425580361","metadata":{"width":150,"height":153,"format":"Png"},"color":{"dominantColorForeground":"Grey","dominantColorBackground":"Grey","dominantColors":["Grey"],"accentColor":"274A68","isBWImg":false}'
ElementSeparate = json.loads(ElementSeparate)
for a in ElementSeparate['description']['tags']:
    print a

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在我看来，您似乎正在尝试解析JSON。您应该对数组的第二个元素使用JSON解析器。你将得到列表或字典。然后，您将能够从“描述”键中提取数据

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第二个元素——大博客——是一个字符串。看起来它是JSON，你可能可以用

JSON.loads（）

解析它。非常感谢：（我很惭愧，谢谢你给了我正确的方法！我更了解我的错误，下次我们都必须从某个地方开始时，我会搜索更多的内容不要泄气！