英文:
BeautifulSoup's findall with a list of names does not find targets after another target
问题
如果我执行以下代码：
from bs4 import BeautifulSoupsoup = BeautifulSoup("<html><body><p>111</p><p>before<ul><li>222</li></ul>after</p></body></html>", "lxml")soup.find_all(["p", "li"])
我会得到以下结果：
[<p>111</p>, <p>before</p>, <li>222</li>]
我期望在结果中也找到 "after"，要么作为第二个 "p" 元素的一部分，要么作为列表中的第四个项目。
这是否是预期的行为？有没有方法来检索文本 "after"？
更奇怪的是，如果我执行 print(soup.prettify())，结果如下：
<html><body><p>111</p><p>before</p><ul><li>222</li></ul>after</body></html>
"ul" 和 "after" 不再是第二个 "p" 的一部分。我假设源代码可能不是有效的 HTML（？），但再次提问：
有没有办法处理这个问题，而不仅仅是丢弃 "after"？
英文:
Other questions with similar titles did not answer my question.
If I execute this:
from bs4 import BeautifulSoupsoup = BeautifulSoup("<html><body><p>111</p><p>before<ul><li>222</li></ul>after</p></body></html>", "lxml")soup.find_all(["p", "li"])
I get this result:
[<p>111</p>, <p>before</p>, <li>222</li>]
I expected to find "after" in the result as well, either as part of the second "p" element or as a 4th item in the list.
Is this expected behaviour? Is there a way to retrieve the text "after"?
More weirdness, if I do print(soup.prettify()), this is the result.
<html><body><p>111</p><p>before</p><ul><li>222</li></ul>after</body></html>
The "ul" and "after" are no longer part of the second "p". I assume that the source is not valid html (?), but again:
Is there a way to deal with this, except from just dropping "after"?
答案1
得分: 2
建议在这种情况下使用不同于 lxml 的解析器：html.parser。lxml 比 html.parser 更严格：
soup = BeautifulSoup("<html><body><p>111</p><p>before<ul><li>222</li></ul>after</p></body></html>", "html.parser")print(soup.find_all(["p", "li"]))
输出结果：
[<p>111</p>, <p>before<ul><li>222</li></ul>after</p>, <li>222</li>]
英文:
I suggest to use different parser than lxml in this case: html.parser. lxml is more strict than html.parser:
soup = BeautifulSoup("<html><body><p>111</p><p>before<ul><li>222</li></ul>after</p></body></html>", "html.parser")print(soup.find_all(["p", "li"]))
Prints:
[<p>111</p>, <p>before<ul><li>222</li></ul>after</p>, <li>222</li>]
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