的屬性值，而不管屬性的BeautifulSoup找到

Question

說我有這樣的事情：

<div class="cake">1</div> 
<h2 id="cake">1</div> 
<sometag someattribute="cake">1</div> 

我想搜索的關鍵詞「蛋糕」，讓所有的人。

Answer 1

使用lambda查找所有內容並搜索給定的屬性值，或者如果某個類包含所需的值。

from bs4 import BeautifulSoup 

example = """<div class="cake">1</div> 
<h2 id="cake">1</div> 
<sometag someattribute="cake">1</div>""" 

soup = BeautifulSoup(example, "html.parser") 

print (soup.find_all(lambda tag: [a for a in tag.attrs.values() if a == "cake" or "cake" in tag.get("class")])) 

輸出：

[<div class="cake">1</div>, <h2 id="cake">1</h2>, <sometag someattribute="cake">1</sometag>] 

Answer 2

你可以使用正則表達式和BeautifulSoup在一起。這是我的可怕的腳本：

r = '''<div class="cake">1</div> 
<h2 id="cake">1</div> 
<sometag someattribute="cake">1</div>''' 

import re 
from bs4 import BeautifulSoup 
soup = BeautifulSoup(r, 'lxml') 

for i in range(len(re.findall(r'(\w+)="cake"',str(soup)))-1): 
    print(soup.find_all(re.compile(r'(\w+)'), {(re.findall(pattern,str(soup)))[i]:'cake'})) 

輸出：

[<div class="cake">1</div>] 
[<h2 id="cake">1 </div> 
<sometag someattribute="cake">1</sometag></h2>]