BeautifulSoup提取
BeautifulSoup提取
提问于 2012-11-15 23:32:36
我对BeautifulSoup有一个“问题”，尤其是re模块，这里有个问题：
import re
from bs4 import BeautifulSoup
string = """
<div id="my_id">
<ul>
<li>something</li>
<li class="color12">something</li>
<li class="color45">something else</li>
</ul>
</div>
"""
soup = BeautifulSoup(string)
li = soup.find_all('li', {'class': re.compile('color(\d+)')} )
for ele in li:
print ele['class'] # will print colorXXXX but i would like to know how to get only this XXXX但我只想提取颜色后的数字。我有没有可能或者有义务使用下面这样的东西：
match = re.search(r'color(\d+)', str(ele['class']))
if match:
print match.group(1)感谢您的帮助:)
回答 1
Stack Overflow用户
回答已采纳
发布于 2012-11-15 23:34:29
您必须重新应用正则表达式。只需将其存储在变量中并重用：
colorpattern = re.compile(r'color(\d+)')
li = soup.find_all('li', {'class': colorpattern} )
for ele in li:
print colorpattern.search(ele['class']).group(1)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/13400774
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