按 id 解析 XML 中的特定项目

Question

我是初学者，所以为了提高自己，我正在做这些事情。

我正在尝试获取具有 ID 的特定 rss/xml 项目。

我想通过使用“post-id”获取特定的博客 post 内容，我该怎么做？

抱歉，如果这是一个常见问题，但我真的找不到真正的解决方案。

我的代码是这样的；

import discord
import requests
import feedparser
from bs4 import BeautifulSoup

blog_url = "https://blog.counter-strike.net/index.php/feed/"
upd_url = "https://blog.counter-strike.net/index.php/category/updates/feed/"
history_file = "history.txt"
h_file = open("history.txt", "a")


def scrap_rss(scrap_param):
    article_list = []
    try:
        r = requests.get(scrap_param)
        soup = BeautifulSoup(r.content, features='xml')
        articles = soup.findAll('item')
        postids = soup.findAll('post-id')
        print('The scraping job succeeded: ', r.status_code)
        for a in articles:
            title = a.find('title').text
            link = a.find('link').text
            published = a.find('pubDate').text
            postid = a.find('post-id').text
            article = {
                'title': title,
                'link': link,
                'published': published,
                'post-id': postid
                }
            article_list.append(article)
            with open(history_file) as f:
                if postid in f.read():
                    print("true")
                else:
                    print("false"+ postid)
                    h_file.write(postid+"\n")
                    #newpost = a.find(".//item/[post-id="+postid+"]/name")
        #newpost = postids.find(text="29701")

        return print(article_list)
    except Exception as e:
        print('The scraping job failed. See exception: ')
        print(e)
print('Starting scraping')
scrap_rss(blog_url)
print('Finished scraping')

Answer 1

下面的代码正在寻找具有给定 post-id (31917) 的项目并提取 pubDate

import requests
import xml.etree.ElementTree as ET

r = requests.get('https://blog.counter-strike.net/index.php/feed/')
if r.status_code == 200:
    root = ET.fromstring(r.text)
    item = [item for item in root.findall('.//item') if
            item.find('{com-wordpress:feed-additions:1}post-id').text == '31917'][0]
    print(f'published at {item.find("pubDate").text}')

输出

published at Thu, 03 Dec 2020 22:13:08 +0000

按 id 解析 XML 中的特定项目

Parse specific item in XML by id

python

xml

rss