Python Beautiful Soup 使用正则表达式查找标签？
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Beautiful Soup Using Regex to Find Tags?
提问by user3314418
I'd really like to be able to allow Beautiful Soup to match any list of tags, like so. I know attr accepts regex, but is there anything in beautiful soup that allows you to do so?
我真的很希望能够让 Beautiful Soup 匹配任何标签列表，就像这样。我知道 attr 接受正则表达式，但是美丽的汤中有什么东西可以让你这样做吗？
soup.findAll("(a|div)")
Output:
输出：
<a> ASDFS
<div> asdfasdf
<a> asdfsdf
My goal is to create a scraper that can grab tables from sites. Sometimes tags are named inconsistently, and I'd like to be able to input a list of tags to name the 'data' part of a table.
我的目标是创建一个可以从站点抓取表格的抓取工具。有时标签的命名不一致，我希望能够输入标签列表来命名表的“数据”部分。
采纳答案by hwnd
find_all()is the most favored method in the Beautiful Soup search API.
find_all()是 Beautiful Soup 搜索 API 中最受欢迎的方法。
You can pass a variation of filters. Also, pass a listto find multiple tags:
您可以传递各种过滤器。另外，传递一个列表来查找多个标签：
>>> soup.find_all(['a', 'div'])
Example:
示例：
>>> from bs4 import BeautifulSoup
>>> soup = BeautifulSoup('<html><body><div>asdfasdf</div><p><a>foo</a></p></body></html>')
>>> soup.find_all(['a', 'div'])
[<div>asdfasdf</div>, <a>foo</a>]
Or you can use a regular expressionto find tags that contain aor div:
或者您可以使用正则表达式来查找包含a或的标签div：
>>> import re
>>> soup.find_all(re.compile("(a|div)"))
回答by ZJS
yes see docs...
是的，请参阅文档...
http://www.crummy.com/software/BeautifulSoup/bs3/documentation.html
http://www.crummy.com/software/BeautifulSoup/bs3/documentation.html
import re
soup.findAll(re.compile("^a$|(div)"))
回答by Manu CJ
Note that you can also use regular expressions to search in attributes of tags. For example:
请注意，您还可以使用正则表达式来搜索标签的属性。例如：
import re
from bs4 import BeautifulSoup
soup.find_all('a', {'href': re.compile(r'crummy\.com/')})
This example finds all <a>tags that link to a website containing the substring 'crummy.com'.
此示例查找<a>链接到包含子字符串的网站的所有标签'crummy.com'。
(I know this is a very old post, but hopefully someone will find this additional information useful.)
（我知道这是一篇很老的帖子，但希望有人会发现这些附加信息很有用。）
