Beautiful Soup 简明教程

Beautiful Soup - replace_with() Method

Method Description

Beautiful Soup 的 replace_with() 方法用提供的标签或字符串替换元素中的标签或字符串。

Beautiful Soup’s replace_with() method replaces a tag or string in an element with the provided tag or string.

Syntax

replace_with(tag/string)

Parameters

该方法接受一个标签对象或一个字符串作为参数。

The method accepts a tag object or a string as argument.

Return Type

replace_method 不会返回新对象。

The replace_method doesn’t return a new object.

Example 1

在这个示例中， 标签被使用 replace_with() 方法替换为 。

In this example, the tag is replaced by with the use of replace_with() method.

html = '''
<html>
   <body>
      <p>The quick, brown fox jumps over a lazy dog.</p>
   </body>
</html>
'''
from bs4 import BeautifulSoup

soup = BeautifulSoup(html, "html.parser")
tag1 = soup.find('p')
txt = tag1.string
tag2 = soup.new_tag('b')
tag2.string = txt
tag1.replace_with(tag2)
print (soup)

Output

<html>
<body>
<b>The quick, brown fox jumps over a lazy dog.</b>
</body>
</html>

Example 2

你可以简单地通过对标签 string 对象调用 replace_with() 方法，将标签的内部文本替换为另一个字符串。

You can simply replace the inner text of a tag with another string by calling replace_with() method on the tag.string object.

html = '''
<html>
   <body>
      <p>The quick, brown fox jumps over a lazy dog.</p>
   </body>
</html>
'''
from bs4 import BeautifulSoup

soup = BeautifulSoup(html, "html.parser")
tag1 = soup.find('p')
tag1.string.replace_with("DJs flock by when MTV ax quiz prog.")
print (soup)

Output

<html>
<body>
<p>DJs flock by when MTV ax quiz prog.</p>
</body>
</html>

Example 3

可用于替换的标签对象，可通过任意 find() 方法获得。在这里，我们替换 标签旁边的标签的文本。

The tag object to be used for replacement can be obtained by any of the find() methods. Here, we replace the text of the tag next to tag.

html = '''
<html>
   <body>
      <p>The quick, <b>brown</b> fox jumps over a lazy dog.</p>
   </body>
</html>
'''
from bs4 import BeautifulSoup

soup = BeautifulSoup(html, "html.parser")
tag1 = soup.find('p')
tag1.find_next('b').string.replace_with('black')
print (soup)

Output

<html>
<body>
<p>The quick, <b>black</b> fox jumps over a lazy dog.</p>
</body>
</html>