如何使用beautifulsoup从html页面中截取纬度/经度数据

时间:2015-11-03 22:46:25

标签: python regex web-scraping beautifulsoup latitude-longitude

我试图刮掉纬度&本网站的经度编号:

http://www.healthgrades.com/provider-search-directory/search?q=Dentistry&prof.type=provider&search.type=&method=&loc=New+York+City%2C+NY+&pt=40.71455%2C-74.007118&isNeighborhood=&locType=%7Cstate%7Ccity&locIsSolrCity=false

对于每个提供者,如果您查看该元素,它看起来像

div class="listing" data-lat="40.66862" data-lng="-73.98574" data-listing="22"

如何使用beautifulsoup获取纬度和经度数?

我尝试在我的脚本中使用正则表达式,

以下是我的脚本 -

Geo = soup.find("div", class_="providerSearchResults")
print Geo.findAll("div", data-lat_= re.compile('[0-9.]'))

但是我收到此错误消息:" SyntaxError:keyword不能是表达式"

此外,对于每个提供商," div"部分总是变化 它可以是:

div class="listing" data-lat="40.66862" data-lng="-73.98574" data-listing="22"

div class="listingfirst" data-lat="40.66862" data-lng="-73.98574" data-listing="22"

甚至

div class="listing enhancedlisting" data-lat="40.66862" data-lng="-73.98574" data-listing="22"

1 个答案:

答案 0 :(得分:1)

首先要求:

pip install requests
pip install BeautifulSoup
pip install lxml

<强> latlongbs4.py:

import requests
from bs4 import BeautifulSoup

r = requests.get('http://www.healthgrades.com/provider-search-directory/search?q=Dentistry&prof.type=provider&search.type=&method=&loc=New+York+City%2C+NY+&pt=40.71455%2C-74.007118&isNeighborhood=&locType=%7Cstate%7Ccity&locIsSolrCity=false')
soup = BeautifulSoup(r.text, 'lxml')
latlonglist = soup.find_all(attrs={"data-lat": True, "data-lng": True})
for latlong in latlonglist:
    print latlong['data-lat'], latlong['data-lng']

编辑: 从attrs词典中删除了class

<强>输出:

(latlongbs4)macbook:latlongbs4 joeyoung$ python latlongbs4.py
40.71851 -74.00984
40.77536 -73.97707
40.71961 -74.00347
40.71395 -74.008
40.711614 -74.015901
40.724576 -74.001771
40.7175 -74.00087
40.71961 -74.00347
40.71766 -73.99293
40.71961 -74.00347
40.71848 -73.99648
40.709917 -74.009884
40.71553 -74.00977
40.71702 -73.996
40.71254 -73.99994
40.70869 -74.01164
40.70994 -74.00764
40.707325 -74.003982
40.7184 -74.00098
40.71373 -74.00812
40.710474 -74.009844
40.7175 -74.00087
40.727582 -73.894632
40.763469 -73.963106
40.724853 -73.841097

一些注释:

我将attrs关键字与字典一起使用,因为:

  

某些属性(如HTML 5中的data- *属性)具有名称   不能用作关键字参数的名称:

     

您可以通过将这些属性放入搜索中来使用这些属性   字典并将字典传递给find_all()作为attrs   参数:

来源: http://www.crummy.com/software/BeautifulSoup/bs4/doc/#the-keyword-arguments