如何在python中选择特定的json元素 [英] how to select specific json element in python

问题描述

我不知道如何在JSON对象中选择特定元素，也无法为Google提出搜索词组.

I can't figure out how to select a specific element in a JSON object, and I cant come up with a search phrase to google.

这是我的JSON

{
  "originalRequest": {
    "category": {}
  },
  "totalResultSize": 209,
  "products": [
    {
      "id": "1000004006560322",
      "ean": "0828768235928",
      "gpc": "music",
      "title": "title",
      "specsTag": "tag",
      "summary": "summary",
      "rating": 45,
      "urls": [
        {
          "key": "DESKTOP",
          "value": "http://www.url.com"
        },
        {
          "key": "MOBILE",
          "value": "https://m.url.com"
        }
      ]
    }
  ]
}

如何选择键为"MOBILE"的URL?

how can I select the URL where the key is MOBILE?

谢谢！

推荐答案

• 首先，使用json.loads或json.load
将JSON文档转换为python对象
• 第二，在"urls"字典中循环查找有问题的项目
• First, convert your JSON document into a python object using json.loads or json.load
• Second, loop through the "urls" dictionary looking for the item in question

例如:

import json

json_document='''
{
  "originalRequest": {
    "category": {}
  },
  "totalResultSize": 209,
  "products": [
    {
      "id": "1000004006560322",
      "ean": "0828768235928",
      "gpc": "music",
      "title": "title",
      "specsTag": "tag",
      "summary": "summary",
      "rating": 45,
      "urls": [
        {
          "key": "DESKTOP",
          "value": "http://www.url.com"
        },
        {
          "key": "MOBILE",
          "value": "https://m.url.com"
        }
      ]
    }
  ]
}
'''

python_obj = json.loads(json_document)

for url in python_obj["products"][0]["urls"]:
    if url["key"] == "MOBILE":
        value = url["value"]
        break
else:
    # Some default action
    print "No url found"
    value = "http://www.url.com"

print "Value:", value

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