从获取请求的响应中解析并获取列表 [英] parsing and getting list from response of get request

问题描述

我正在尝试使用请求模块解析网站:

I'm trying to parse a website with the requests module:

import requests
some_data = {'a':'',
             'b':''}
with requests.Session() as s:
    result = s.post('http://website.com',data=some_data)
    print(result.text)

页面的响应如下:

{
    "arrangetype":"U",
    "list": [
        {
            "product_no":43,
            "display_order":4,
            "is_selling":"T",
            "product_empty":"F",
            "fix_position":null,
            "is_auto_sort":false
        },
        {
            "product_no":44,
            "display_order":6,
            "is_selling":"T",
            "product_empty":"F",
            "fix_position":null,
            "is_auto_sort":false
        }
    ],
    "length":2
}

我发现与其解析完整的HTML，不如处理响应，因为我想要的所有数据都在该响应中.

I found that instead of parsing full HTML, it would be better to deal with the response as all the data I want is in that response.

我想要得到的是product_no值的列表，所以预期结果是:

What I want to get is a list of the values of product_no, so the expected result is:

[43,44]

我该怎么做?

推荐答案

使用 json.loads() ，然后以列表理解的方式收集结果.

Convert your JSON response to a dictionary with json.loads(), and collect your results in a list comprehension.

演示:

from json import loads

data = """{
    "arrangetype":"U",
    "list": [
        {
            "product_no":43,
            "display_order":4,
            "is_selling":"T",
            "product_empty":"F",
            "fix_position":null,
            "is_auto_sort":false
        },
        {
            "product_no":44,
            "display_order":6,
            "is_selling":"T",
            "product_empty":"F",
            "fix_position":null,
            "is_auto_sort":false
        }
    ],
    "length":2 
}"""

json_dict = loads(data)

print([x['product_no'] for x in json_dict['list']])
# [43, 44]

完整代码:

import requests
from json import loads

some_data = {'a':'',
             'b':''}

with requests.Session() as s:
    result = s.post('http://website.com',data=some_data)
    json_dict = loads(result.text)
    print([x["product_no"] for x in json_dict["list"]])

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