Python BeautifulSoup 提取元素之间的文本 [英] Python BeautifulSoup extract text between element
问题描述
我尝试从以下 HTML 中提取这是我的文本":
I try to extract "THIS IS MY TEXT" from the following HTML:
<html>
<body>
<table>
<td class="MYCLASS">
<!-- a comment -->
<a hef="xy">Text</a>
<p>something</p>
THIS IS MY TEXT
<p>something else</p>
</br>
</td>
</table>
</body>
</html>
我是这样试的:
soup = BeautifulSoup(html)
for hit in soup.findAll(attrs={'class' : 'MYCLASS'}):
print hit.text
但是我得到了所有嵌套标签和评论之间的所有文本.
But I get all the text between all nested Tags plus the comment.
谁能帮我把这是我的文字"弄出来?
Can anyone help me to just get "THIS IS MY TEXT" out of this?
推荐答案
了解有关如何导航的更多信息 通过BeautifulSoup中的解析树.解析树有 tags 和 NavigableStrings (因为这是一个文本).一个例子
Learn more about how to navigate through the parse tree in BeautifulSoup. Parse tree has got tags and NavigableStrings (as THIS IS A TEXT). An example
from BeautifulSoup import BeautifulSoup
doc = ['<html><head><title>Page title</title></head>',
'<body><p id="firstpara" align="center">This is paragraph <b>one</b>.',
'<p id="secondpara" align="blah">This is paragraph <b>two</b>.',
'</html>']
soup = BeautifulSoup(''.join(doc))
print soup.prettify()
# <html>
# <head>
# <title>
# Page title
# </title>
# </head>
# <body>
# <p id="firstpara" align="center">
# This is paragraph
# <b>
# one
# </b>
# .
# </p>
# <p id="secondpara" align="blah">
# This is paragraph
# <b>
# two
# </b>
# .
# </p>
# </body>
# </html>
要向下移动解析树，您有 contents 和 string.
To move down the parse tree you have contents and string.
contents 是 Tag 和 NavigableString 对象的有序列表包含在页面元素中
contents is an ordered list of the Tag and NavigableString objects contained within a page element
如果一个标签只有一个子节点，并且该子节点是一个字符串，子节点作为 tag.string 可用，以及标签内容[0]
if a tag has only one child node, and that child node is a string, the child node is made available as tag.string, as well as tag.contents[0]
对于上面的，也就是说你可以得到
For the above, that is to say you can get
soup.b.string
# u'one'
soup.b.contents[0]
# u'one'
对于多个子节点，你可以有例如
For several children nodes, you can have for instance
pTag = soup.p
pTag.contents
# [u'This is paragraph ', <b>one</b>, u'.']
所以在这里您可以使用 contents 并在您想要的索引处获取内容.
so here you may play with contents and get contents at the index you want.
你也可以遍历一个标签，这是一个快捷方式.例如，
You also can iterate over a Tag, this is a shortcut. For instance,
for i in soup.body:
print i
# <p id="firstpara" align="center">This is paragraph <b>one</b>.</p>
# <p id="secondpara" align="blah">This is paragraph <b>two</b>.</p>
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