Question

以下是要分析的块：

('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}}')

我需要在＆＃34;描述＆＃34;之后提取所有元素，但我不知道如何做到这一点......（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"

我已经找了几分钟，但我不明白怎么做！我是一个有点初学者的学习＆＃34;列表＆＃34;元素，我仍然很难理解。

＆＃34; For＆＃34;循环只返回'images\\Principales\\Screenshot_1.png'，然后剩下的大块......

你有解决方案吗？

谢谢你的到来！

修改

确实，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，我只是这样继续：

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

对我而言，您似乎正在尝试解析JSON。您应该将JSON解析器用于数组的第二个元素。你会找回列表或字典。然后，您将能够从“描述”键中提取数据。

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

从python上的特定列表中提取元素

1 个答案: