BeautifulSoup
本身最强大的功能是文档树的搜索;soup = BeautifulSoup('<b class="boldest">Extremely bold</b>', 'html.parser')
tag = soup.b
print(f"修改前:{tag}")
tag.name = "blockquote"
tag['class'] = 'verybold'
tag['id'] = 1
print(f"修改后:{tag}")
del tag['class']
del tag['id']
print(f"删除后:{tag}")
修改前:<b class="boldest">Extremely bold</b>
修改后:<blockquote class="verybold" id="1">Extremely bold</blockquote>
删除后:<blockquote>Extremely bold</blockquote>
tag
的 .string
属性赋值,就相当于用当前的内容替代了原来的内容;markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.string = "New link text."
print(tag)
<a href="http://example.com/">New link text.</a>
Tag.append()
方法是给tag
中添加内容;soup = BeautifulSoup("<a>Foo</a>", 'html.parser')
soup.a.append("Bar")
print(soup)
print(soup.a.contents)
<a>FooBar</a>
['Foo', 'Bar']
NavigableString()
;NavigableString
的任何子类, 只要调用 NavigableString
;BeautifulSoup.new_tag()
;soup = BeautifulSoup("<b></b>", 'html.parser')
original_tag = soup.b
new_tag = soup.new_tag("a", href="http://www.example.com")
original_tag.append(new_tag)
print(original_tag)
new_tag.string = "Link text."
print(original_tag)
<b><a href="http://www.example.com"></a></b>
<b><a href="http://www.example.com">Link text.</a></b>
Tag.insert()
方法与 Tag.append()
方法类似;.contents
属性的最后;markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.insert(1, "but did not endorse ")
print(tag)
print(tag.contents)
<a href="http://example.com/">I linked to but did not endorse <i>example.com</i></a>
['I linked to ', 'but did not endorse ', <i>example.com</i>]
insert_before()
方法在当前tag
或文本节点前插入内容;insert_after()
方法在当前tag
或文本节点后插入内容;markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.clear()
print(tag)
<a href="http://example.com/"></a>
方法 | 说明 |
---|---|
| 将当前 |
| 将当前节点移除文档树并完全销毁 |
| 移除文档树中的某段内容,并用新 |
| 可以对指定的 |
| 将移除 |
# -*- coding:utf-8 -*-
# 作者:NoamaNelson
# 日期:2023/2/22
# 文件名称:bs05.py
# 作用:Beautiful Soup的使用
# 联系:VX(NoamaNelson)
# 博客:https://blog.csdn.net/NoamaNelson
from bs4 import BeautifulSoup
# 修改tag的名称和属性
soup = BeautifulSoup('<b class="boldest">Extremely bold</b>', 'html.parser')
tag = soup.b
print(f"修改前:{tag}")
tag.name = "blockquote"
tag['class'] = 'verybold'
tag['id'] = 1
print(f"修改后:{tag}")
del tag['class']
del tag['id']
print(f"删除后:{tag}")
# 修改 .string
markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.string = "New link text."
print(tag)
# append()
soup = BeautifulSoup("<a>Foo</a>", 'html.parser')
soup.a.append("Bar")
print(soup)
print(soup.a.contents)
# NavigableString() 和 .new_tag()
soup = BeautifulSoup("<b></b>", 'html.parser')
original_tag = soup.b
new_tag = soup.new_tag("a", href="http://www.example.com")
original_tag.append(new_tag)
print(original_tag)
new_tag.string = "Link text."
print(original_tag)
# insert()
markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.insert(1, "but did not endorse ")
print(tag)
print(tag.contents)
# insert_before() 和 insert_after()
# clear()
markup = '<a href="http://example.com/">I linked to <i>example.com</i></a>'
soup = BeautifulSoup(markup, 'html.parser')
tag = soup.a
tag.clear()
print(tag)
# extract()
# decompose()
# replace_with()
# wrap()
# unwrap()
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。