从python上的特定列表中提取元素

Question

下面是要分析的模块：

('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“description”后的所有元素，但我不知道怎么做。。。（事实上，我需要这些元素：

^{pr2}$

我已经找了好几分钟了，但我不知道怎么做！我对学习“列表”元素有点初学者，但我仍然很难理解。在

“For”循环只返回'images\\Principales\\Screenshot_1.png'，然后剩下大的块。。。在

你有解决办法吗？在

谢谢你的忠告！在

编辑：

实际上，它实际上是JSON！感谢帮助我的人：） 为了提取包含在第二个块中的所需元素，我只需这样做：

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

Answer 1

在我看来，你好像在尝试解析JSON。应该对数组的第二个元素使用JSON解析器。你要么要回单子，要么要字典。然后您就可以从“description”key has中提取数据。在

https://docs.python.org/3/library/json.html