从 json 中抓取特定值答案

【问题标题】：Scrape specific value from a json从 json 中抓取特定值
【发布时间】：2021-11-13 16:45:35
【问题描述】：

我想从这个例子中抓取一些东西，我的目标是通过匹配 json 文件（例如 5.5/6）内部的 title 来抓取一些值并专注于它们，我想让我的脚本只为具有 title 和 option1/2/3 数字 6

的部分选择值

({
    "id": 39430269435981,
    "title": "5.5",
    "option1": "5.5",
    "option2": null,
    "option3": null,
    "sku": "195241242248",
    "requires_shipping": true,
    "taxable": true,
    "featured_image": null,
    "available": false,
    "name": "Nike Dunk High 1985 - Lemon Drop / Black / Saturn Gold - 5.5",
    "public_title": "5.5",
    "options": ["5.5"],
    "price": 13108,
    "weight": 1361,
    "compare_at_price": null,
    "inventory_management": "shopify",
    "barcode": null
},
{
    "id": 39430269468749,
    "title": "6",
    "option1": "6",
    "option2": null,
    "option3": null,
    "sku": "195241242255",
    "requires_shipping": true,
    "taxable": true,
    "featured_image": null,
    "available": false,
    "name": "Nike Dunk High 1985 - Lemon Drop / Black / Saturn Gold - 6",
    "public_title": "6",
    "options": ["6"],
    "price": 13108,
    "weight": 1361,
    "compare_at_price": null,
    "inventory_management": "shopify",
    "barcode": null
}

我该怎么做？如何只抓取标题为 6 的部分的 id？

【问题讨论】：

beautifulsoup 被标记在这里有什么原因吗？我认为这只是一个 JSON 问题？

标签： python json web-scraping beautifulsoup

【解决方案1】：

在您的情况下必须有一个更具体的方法，但通用方法是将这个“json”转换为一个字典列表并遍历它们，例如：

import json

jstring = '''
[
{
    "id": 39430269435981,
    "title": "5.5",
    "option1": "5.5",
    "option2": null,
    "option3": null,
    "sku": "195241242248",
    "requires_shipping": true,
    "taxable": true,
    "featured_image": null,
    "available": false,
    "name": "Nike Dunk High 1985 - Lemon Drop / Black / Saturn Gold - 5.5",
    "public_title": "5.5",
    "options": ["5.5"],
    "price": 13108,
    "weight": 1361,
    "compare_at_price": null,
    "inventory_management": "shopify",
    "barcode": null
},
{
    "id": 39430269468749,
    "title": "6",
    "option1": "6",
    "option2": null,
    "option3": null,
    "sku": "195241242255",
    "requires_shipping": true,
    "taxable": true,
    "featured_image": null,
    "available": false,
    "name": "Nike Dunk High 1985 - Lemon Drop / Black / Saturn Gold - 6",
    "public_title": "6",
    "options": ["6"],
    "price": 13108,
    "weight": 1361,
    "compare_at_price": null,
    "inventory_management": "shopify",
    "barcode": null
}
]
'''
jlist = json.loads(jstring)

for jdict in jlist:
    if ( jdict['title'] == "6" ):
        print(jdict['id'])

输出

39430269468749

【讨论】：