用python抓取黄页hrefs
我最近发布了请求从yellowpages中提取数据的帖子,@alecxe向我展示了一些提取数据的新方法,这帮了我很多忙,但我又一次陷入困境,我想为yellowpages中的每个链接提取数据,这样我就可以获得yellowpages页面,该页面上有更多的数据。我想添加一个名为“url”的变量,并获取业务的href,而不是实际的业务网站,而是业务的yellowpages页面。我试过各种方法,但似乎都不管用。href位于“class=business name”下用python抓取黄页hrefs,python,parsing,beautifulsoup,Python,Parsing,Beautifulsoup,我最近发布了请求从yellowpages中提取数据的帖子,@alecxe向我展示了一些提取数据的新方法,这帮了我很多忙,但我又一次陷入困境,我想为yellowpages中的每个链接提取数据,这样我就可以获得yellowpages页面,该页面上有更多的数据。我想添加一个名为“url”的变量,并获取业务的href,而不是实际的业务网站,而是业务的yellowpages页面。我试过各种方法,但似乎都不管用。href位于“class=business name”下 您应该实现多个方面: 从busine
您应该实现多个方面:
- 从
类元素的business name
属性中提取业务链接-在href
中,这可以通过像字典一样“处理”元素来完成BeautifulSoup
- 使用
urljoin()
- 在维护web抓取会话时向业务页面发出请求
- 使用
解析业务页面,并提取所需信息BeautifulSoup
- 添加时间延迟以避免频繁访问站点
from urllib.parse import urljoin
import requests
import time
from bs4 import BeautifulSoup
url = "http://www.yellowpages.com/search?search_terms=businesses&geo_location_terms=baton%rouge+LA&page=1"
with requests.Session() as session:
session.headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36'}
page = session.get(url)
soup = BeautifulSoup(page.text, "html.parser")
for result in soup.select(".search-results .result"):
business_name_element = result.select_one(".business-name")
name = business_name_element.get_text(strip=True, separator=" ")
link = urljoin(page.url, business_name_element["href"])
# extract additional business information
business_page = session.get(link)
business_soup = BeautifulSoup(business_page.text, "html.parser")
description = business_soup.select_one("dd.description").text
print(name, description)
time.sleep(1) # time delay to not hit the site too often
太棒了!我对python和编程还是很陌生。您的解决方案工作得非常出色,尽管我只添加了
business\u name\u元素=result,但做了一点小小的更改。选择\u one(“.business name”)
和link=urljoin(page.url,business\u name\u元素[“href”])
。当我仔细阅读你的代码时,我对它进行了反向工程,这样它才有意义。谢谢你的支持!我正在按原样运行您的代码,但在描述部分出现错误。
from urllib.parse import urljoin
import requests
import time
from bs4 import BeautifulSoup
url = "http://www.yellowpages.com/search?search_terms=businesses&geo_location_terms=baton%rouge+LA&page=1"
with requests.Session() as session:
session.headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36'}
page = session.get(url)
soup = BeautifulSoup(page.text, "html.parser")
for result in soup.select(".search-results .result"):
business_name_element = result.select_one(".business-name")
name = business_name_element.get_text(strip=True, separator=" ")
link = urljoin(page.url, business_name_element["href"])
# extract additional business information
business_page = session.get(link)
business_soup = BeautifulSoup(business_page.text, "html.parser")
description = business_soup.select_one("dd.description").text
print(name, description)
time.sleep(1) # time delay to not hit the site too often