使用beautifulsoup和css选择器而不是lxml和xpath来刮取特定元素之前的元素

Question

我想从这个页面抓取“服务/产品”部分： https : //www.yellowpages.com/deland-fl/mip/ryan-wells-pumps-20533306?lid=1001782175490

文本位于 dd 元素内，该元素始终位于该元素之后

服务/产品

我使用 lxml 和 xpath 创建了用于抓取此文本的代码：

 import requests from lxml import html url = "" headers = {'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:76.0) Gecko/20100101 Firefox/76.0'} session = requests.Session() r = session.get(url, timeout=30, headers=headers) t = html.fromstring(r.content) products = t.xpath('//dd[preceding-sibling::dt[contains(.,"Services/Products")]]/text()[1]')[0] if t.xpath('//dd[preceding-sibling::dt[contains(.,"Services/Products")]]') else ''

有什么方法可以使用 Beautifulsoup（如果可能，还有 css 选择器）而不是 lxml 和 xpath 来获取相同的文本？

Answer 1

尝试使用 BeautifulSoup 和 Requests。 这要容易得多。 这是一些代码

# BeautifulSoup is an HTML parser. You can find specific elements in a BeautifulSoup object
from bs4 import BeautifulSoup
from requests import get

url = "https://www.yellowpages.com/deland-fl/mip/ryan-wells-pumps-20533306?lid=1001782175490"


obj = BeautifulSoup(get(url).content, "html.parser")

# Gets the section with the Services
buisness_info = obj.find("section", {"id":"business-info"})

# Getting all <dd> elements (cause you can pick off the one you need from the list)
all_dd = buisness_info.find_all("dd")

# Finds the specific tag with the text you need
services_and_products = all_dd[2]

# Gets the text
text = services_and_products.text

# All Done
print(text)

Answer 2

在您的页面上尝试这样的操作：

inf = soup.select_one('section#business-info dl')
target = inf.find("dt", text='Services/Products').nextSibling
for t in target.stripped_strings:
    print(t)

输出：

Pumps|Well Pumps|Residential Pumps|Water Pumps|Residential Pumps|Well Pumps|Residential Pumps|Commercial Pumps|Well Pumps|Pumps & Water Tanks|Residential & Commercial|Residential & Commercial|Water Tanks|Pump Maintenance|Pump Maintenance|Free Estimates|Service & Repair|Emergency Service Avail|Residential & Commercial|Service & Repair|Residential & Commercial|Pumps|Bonded|Insured|Water Tanks|Deep Wells|4 Wells|Pumps & Water Tanks 4'' Wells|2' - 12' Diameter Wells