从 URL python 中读取 XML，按子元素过滤 XML 元素

Question

我正在尝试检查某个元素中是否包含其他元素。 url 元素有时单独包含 loc 标签，有时包含 loc 和图像标签，我想在有图像标签时获取 loc 标签的值，我试过这样的东西。

url = "https://www.aeroprecisionusa.com/media/sitemap_en.xml"
response = requests.get(url)
root = ET.fromstring(response.content)
links = []
for elm in root.findall(".//{http://www.sitemaps.org/schemas/sitemap/0.9}url"):
    if elm.find('.//{http://www.sitemaps.org/schemas/sitemap/0.9}image) is not None:
        link = elm.find('./{http://www.sitemaps.org/schemas/sitemap/0.9}loc').text
        links.append(link)
        return links

但它仍然是 returns 所有 url 父元素的 loc 标记。

Answer 1

此脚本将打印 <loc> 标签和 <image> url 标签：

import requests
import xml.etree.ElementTree as ET


url = "https://www.aeroprecisionusa.com/media/sitemap_en.xml"
response = requests.get(url)
root = ET.fromstring(response.content)
links = []
for elm in root.findall(".//{http://www.sitemaps.org/schemas/sitemap/0.9}url"):
    loc = elm.find(".//{http://www.sitemaps.org/schemas/sitemap/0.9}loc")
    img = elm.find(".//{http://www.google.com/schemas/sitemap-image/1.1}image")
    if not loc is None and not img is None:
        img_loc = img.find(
            ".//{http://www.google.com/schemas/sitemap-image/1.1}loc"
        )
        print(loc.text)
        print(img_loc.text)
        print("-" * 80)

打印：

...

--------------------------------------------------------------------------------
https://www.aeroprecisionusa.com/magpul-moe-grip-sl-s-stock-midnight-marshland-furniture-set
http://d2df4e9l5rljaz.cloudfront.net/media/catalog/product/cache/61578878e6753b4ec73e244e03a0515d/a/p/aprh101361c-magpul-moe-grip-sl-s-stock-midnight-marshland-furniture-set-3.jpg
--------------------------------------------------------------------------------
https://www.aeroprecisionusa.com/battle-rope-2pt0-357-38-cal-9mm-pistol
http://d2df4e9l5rljaz.cloudfront.net/media/catalog/product/cache/61578878e6753b4ec73e244e03a0515d/a/p/aprh101753-battle-rope-2pt0.jpg
--------------------------------------------------------------------------------
https://www.aeroprecisionusa.com/battle-2pt0-rope-22-223-cal-pistol-rifle
http://d2df4e9l5rljaz.cloudfront.net/media/catalog/product/cache/61578878e6753b4ec73e244e03a0515d/a/p/aprh101754-battle-rope-2pt0.jpg
--------------------------------------------------------------------------------

从 URL python 中读取 XML，按子元素过滤 XML 元素

Reading XML from an URL python, Filtering XML elements by child element

python

xml

xml-parsing