问题:美丽的汤并通过ID提取div及其内容

soup.find("tagName", { "id" : "articlebody" })

为什么这不返回<div id="articlebody"> ... </div>标签和中间的东西?它什么也不返回。我知道一个事实,因为我正盯着它

soup.prettify()

soup.find("div", { "id" : "articlebody" }) 也行不通。

编辑:我发现BeautifulSoup无法正确解析我的页面,这可能意味着我尝试解析的页面在SGML或其他格式中未正确格式化)

soup.find("tagName", { "id" : "articlebody" })

Why does this NOT return the <div id="articlebody"> ... </div> tags and stuff in between? It returns nothing. And I know for a fact it exists because I’m staring right at it from

soup.prettify()

soup.find("div", { "id" : "articlebody" }) also does not work.

(EDIT: I found that BeautifulSoup wasn’t correctly parsing my page, which probably meant the page I was trying to parse isn’t properly formatted in SGML or whatever)


回答 0

您应该发布示例文档,因为代码可以正常工作:

>>> import BeautifulSoup
>>> soup = BeautifulSoup.BeautifulSoup('<html><body><div id="articlebody"> ... </div></body></html')
>>> soup.find("div", {"id": "articlebody"})
<div id="articlebody"> ... </div>

<div><div>s中查找s 也可以:

>>> soup = BeautifulSoup.BeautifulSoup('<html><body><div><div id="articlebody"> ... </div></div></body></html')
>>> soup.find("div", {"id": "articlebody"})
<div id="articlebody"> ... </div>

You should post your example document, because the code works fine:

>>> import BeautifulSoup
>>> soup = BeautifulSoup.BeautifulSoup('<html><body><div id="articlebody"> ... </div></body></html')
>>> soup.find("div", {"id": "articlebody"})
<div id="articlebody"> ... </div>

Finding <div>s inside <div>s works as well:

>>> soup = BeautifulSoup.BeautifulSoup('<html><body><div><div id="articlebody"> ... </div></div></body></html')
>>> soup.find("div", {"id": "articlebody"})
<div id="articlebody"> ... </div>

回答 1

通过其元素查找id

div = soup.find(id="articlebody")

To find an element by its id:

div = soup.find(id="articlebody")

回答 2

Beautiful Soup 4支持该方法的大多数CSS选择器,因此您可以使用以下选择器.select()id

soup.select('#articlebody')

如果需要指定元素的类型,则可以在选择器之前添加类型选择id器:

soup.select('div#articlebody')

.select()方法将返回元素的集合,这意味着它将返回与以下.find_all()方法示例相同的结果:

soup.find_all('div', id="articlebody")
# or
soup.find_all(id="articlebody")

如果只想选择一个元素,则可以使用.find()方法

soup.find('div', id="articlebody")
# or
soup.find(id="articlebody")

Beautiful Soup 4 supports most CSS selectors with the .select() method, therefore you can use an id selector such as:

soup.select('#articlebody')

If you need to specify the element’s type, you can add a type selector before the id selector:

soup.select('div#articlebody')

The .select() method will return a collection of elements, which means that it would return the same results as the following .find_all() method example:

soup.find_all('div', id="articlebody")
# or
soup.find_all(id="articlebody")

If you only want to select a single element, then you could just use the .find() method:

soup.find('div', id="articlebody")
# or
soup.find(id="articlebody")

回答 3

我认为’div’标签嵌套过多时会出现问题。我正在尝试从Facebook html文件中解析一些联系人,Beautifulsoup无法找到带有“ fcontent”类的标签“ div”。

其他类也会发生这种情况。一般而言,当我搜索div时,它只会变成那些嵌套不多的div。

html源代码可以是您的朋友(而不是您的朋友之一)的朋友列表中来自facebook的任何页面。如果有人可以测试它并提供一些建议,我将非常感激。

这是我的代码,在这里我只尝试打印带有“ fcontent”类的标签“ div”的数量:

from BeautifulSoup import BeautifulSoup 
f = open('/Users/myUserName/Desktop/contacts.html')
soup = BeautifulSoup(f) 
list = soup.findAll('div', attrs={'class':'fcontent'})
print len(list)

I think there is a problem when the ‘div’ tags are too much nested. I am trying to parse some contacts from a facebook html file, and the Beautifulsoup is not able to find tags “div” with class “fcontent”.

This happens with other classes as well. When I search for divs in general, it turns only those that are not so much nested.

The html source code can be any page from facebook of the friends list of a friend of you (not the one of your friends). If someone can test it and give some advice I would really appreciate it.

This is my code, where I just try to print the number of tags “div” with class “fcontent”:

from BeautifulSoup import BeautifulSoup 
f = open('/Users/myUserName/Desktop/contacts.html')
soup = BeautifulSoup(f) 
list = soup.findAll('div', attrs={'class':'fcontent'})
print len(list)

回答 4

很可能是因为默认的beautifulsoup解析器有问题。更改其他解析器,例如“ lxml”,然后重试。

Most probably because of the default beautifulsoup parser has problem. Change a different parser, like ‘lxml’ and try again.


回答 5

在beautifulsoup源代码中,此行允许div嵌套在div中;因此您对lukas评论的关注不会成立。

NESTABLE_BLOCK_TAGS = ['blockquote', 'div', 'fieldset', 'ins', 'del']

我认为您需要做的是指定所需的attrs,例如

source.find('div', attrs={'id':'articlebody'})

In the beautifulsoup source this line allows divs to be nested within divs; so your concern in lukas’ comment wouldn’t be valid.

NESTABLE_BLOCK_TAGS = ['blockquote', 'div', 'fieldset', 'ins', 'del']

What I think you need to do is to specify the attrs you want such as

source.find('div', attrs={'id':'articlebody'})

回答 6

你有尝试过soup.findAll("div", {"id": "articlebody"})吗?

听起来很疯狂,但是如果您从野外抓东西,就不能排除多个div …

have you tried soup.findAll("div", {"id": "articlebody"})?

sounds crazy, but if you’re scraping stuff from the wild, you can’t rule out multiple divs…


回答 7

我用了:

soup.findAll('tag', attrs={'attrname':"attrvalue"})

作为我的find / findall语法;也就是说,除非标签和属性列表之间还有其他可选参数,否则这应该没有什么不同。

I used:

soup.findAll('tag', attrs={'attrname':"attrvalue"})

As my syntax for find/findall; that said, unless there are other optional parameters between the tag and attribute list, this shouldn’t be different.


回答 8

在尝试抓取Google时也遇到了我。
我最终使用pyquery。
安装:

pip install pyquery

用:

from pyquery import PyQuery    
pq = PyQuery('<html><body><div id="articlebody"> ... </div></body></html')
tag = pq('div#articlebody')

Happened to me also while trying to scrape Google.
I ended up using pyquery.
Install:

pip install pyquery

Use:

from pyquery import PyQuery    
pq = PyQuery('<html><body><div id="articlebody"> ... </div></body></html')
tag = pq('div#articlebody')

回答 9

这是一个代码片段

soup = BeautifulSoup(:"index.html")
titleList = soup.findAll('title')
divList = soup.findAll('div', attrs={ "class" : "article story"})

如您所见,我找到了所有标签,然后找到了所有带有class =“ article”的标签

Here is a code fragment

soup = BeautifulSoup(:"index.html")
titleList = soup.findAll('title')
divList = soup.findAll('div', attrs={ "class" : "article story"})

As you can see I find all tags and then I find all tags with class=”article” inside


回答 10

Id属性始终是唯一标识的。这意味着您无需指定元素就可以直接使用它。因此,如果您的元素可以在内容中进行解析,则是一个加分点。

divEle = soup.find(id = "articlebody")

The Id property is always uniquely identified. That means you can use it directly without even specifying the element. Therefore, it is a plus point if your elements have it to parse through the content.

divEle = soup.find(id = "articlebody")

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