Python 漂亮的汤-获取所有文本,但保留链接html?
我必须处理一个非常混乱的HTML的大档案,里面充满了无关的表格、跨距和内联样式,并将其标记下来 我正试图使用来完成这项任务,我的目标基本上是Python 漂亮的汤-获取所有文本,但保留链接html?,python,html,parsing,beautifulsoup,Python,Html,Parsing,Beautifulsoup,我必须处理一个非常混乱的HTML的大档案,里面充满了无关的表格、跨距和内联样式,并将其标记下来 我正试图使用来完成这项任务,我的目标基本上是get_text()函数的输出,除了用href完整地保留锚定标记 例如,我想转换为: <td> <font><span>Hello</span><span>World</span></font><br> <span>Foo Bar &l
get_text()
函数的输出,除了用href
完整地保留锚定标记
例如,我想转换为:
<td>
<font><span>Hello</span><span>World</span></font><br>
<span>Foo Bar <span>Baz</span></span><br>
<span>Example Link: <a href="https://google.com" target="_blank" style="mso-line-height-rule: exactly;-ms-text-size-adjust: 100%;-webkit-text-size-adjust: 100%;color: #395c99;font-weight: normal;text-decoration: underline;">Google</a></span>
</td>
当解析器沿树向下移动时,返回多个片段/重复:
HelloWorldFoo Bar BazExample Link: Google
HelloWorldFoo Bar BazExample Link: Google
HelloWorldFoo Bar BazExample Link: Google
HelloWorld
Hello
World
Foo Bar Baz
Baz
Example Link: Google
<a href='https://google.com'>Google</a>
HelloWorldFoo工具栏示例链接:谷歌
HelloWorldFoo酒吧BazExample链接:谷歌
HelloWorldFoo酒吧BazExample链接:谷歌
你好世界
你好
世界
福吧巴兹酒店
巴兹
示例链接:谷歌
<>代码> > P>只考虑直接子集递归= false,则需要处理每个“TD”,并分别提取文本和锚点链接。p>
#!/usr/bin/env python
from bs4 import BeautifulSoup
example_html = '<td><font><span>Some Example Text</span></font><br><span>Another Example Text</span><br><span>Example Link: <a href="https://google.com" target="_blank" style="mso-line-height-rule: exactly;-ms-text-size-adjust: 100%;-webkit-text-size-adjust: 100%;color: #395c99;font-weight: normal;text-decoration: underline;">Google</a></span></td>'
soup = BeautifulSoup(example_html, 'lxml')
tags = soup.find_all(recursive=False)
for tag in tags:
print(tag.text)
print(tag.find('a'))
for tag in tags:
spans = tag.find_all('span')
for span in spans:
print(span.text)
print(tag.find('a'))
解决此问题的一种可能方法是,在打印元素的文本时,为a
元素引入一些特殊处理
您可以通过重写\u all_strings()
方法并返回a
子元素的字符串表示形式,并跳过a
元素中的可导航字符串来完成此操作。大致如下:
from bs4 import BeautifulSoup, NavigableString, CData, Tag
class MyBeautifulSoup(BeautifulSoup):
def _all_strings(self, strip=False, types=(NavigableString, CData)):
for descendant in self.descendants:
# return "a" string representation if we encounter it
if isinstance(descendant, Tag) and descendant.name == 'a':
yield str(descendant)
# skip an inner text node inside "a"
if isinstance(descendant, NavigableString) and descendant.parent.name == 'a':
continue
# default behavior
if (
(types is None and not isinstance(descendant, NavigableString))
or
(types is not None and type(descendant) not in types)):
continue
if strip:
descendant = descendant.strip()
if len(descendant) == 0:
continue
yield descendant
演示:
[1]中的:data=“”
...:
…:HelloWorld
…:Foo Bar Baz
…:示例链接:
...:
...: """
在[2]中:soup=mybeautifulsou(数据,“lxml”)
在[3]中:打印(soup.get_text())
你好世界
福吧巴兹酒店
示例链接:
是否也要删除样式和其他链接属性??因为您的输入和输出涉及到这一点,非常感谢,这是一个灵活、优雅的解决方案,我从未想到过。我对a
标记的处理做了一个小小的调整,以便按照我的要求输出,这很完美。它怎么可能只返回href属性呢?例如:示例链接:
回答我自己的问题,只需将:if-isinstance(genderant,Tag)和genderant.name='a':yield str(genderant)
更改为:if-isinstance(genderant,Tag)和genderant.name='a':yield str('.format(genderant.get('href','')
for tag in tags:
spans = tag.find_all('span')
for span in spans:
print(span.text)
print(tag.find('a'))
from bs4 import BeautifulSoup, NavigableString, CData, Tag
class MyBeautifulSoup(BeautifulSoup):
def _all_strings(self, strip=False, types=(NavigableString, CData)):
for descendant in self.descendants:
# return "a" string representation if we encounter it
if isinstance(descendant, Tag) and descendant.name == 'a':
yield str(descendant)
# skip an inner text node inside "a"
if isinstance(descendant, NavigableString) and descendant.parent.name == 'a':
continue
# default behavior
if (
(types is None and not isinstance(descendant, NavigableString))
or
(types is not None and type(descendant) not in types)):
continue
if strip:
descendant = descendant.strip()
if len(descendant) == 0:
continue
yield descendant
In [1]: data = """
...: <td>
...: <font><span>Hello</span><span>World</span></font><br>
...: <span>Foo Bar <span>Baz</span></span><br>
...: <span>Example Link: <a href="https://google.com" target="_blank" style="mso-line-height-rule: exactly;-ms-text-size-adjust: 100%;-webkit-text-size-adjust: 100%;color: #395c99;font-weight: normal;tex
...: t-decoration: underline;">Google</a></span>
...: </td>
...: """
In [2]: soup = MyBeautifulSoup(data, "lxml")
In [3]: print(soup.get_text())
HelloWorld
Foo Bar Baz
Example Link: <a href="https://google.com" style="mso-line-height-rule: exactly;-ms-text-size-adjust: 100%;-webkit-text-size-adjust: 100%;color: #395c99;font-weight: normal;text-decoration: underline;" target="_blank">Google</a>