我需要向 html 文档中的 DOCTYPE 标记添加 ATTLIST 声明。
阅读文档和谷歌搜索后，这就是我得出的结论:
from bs4 import BeautifulSoup, Doctype
# minimal html document
doc = """<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html/>"""
soup = BeautifulSoup(doc, features='html.parser')
# the modified doctype tag
doctype = """<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
[<!ATTLIST span bodyref CDATA #IMPLIED>] >"""
dt = BeautifulSoup(doctype, features='html.parser')
for item in soup.contents:
if isinstance(item, Doctype):
item.replace_with(dt)
break
print(soup.prettify(formatter=None))
这会产生所需的结果，但感觉有点“hacky”。 我想将 ATTLIST 部分插入标签中， 而不是像我在这里所做的那样替换整个东西。 有谁知道该怎么做吗？
最佳答案
一个小的改进是构建一个 Doctype 对象并用它替换，例如:
from bs4 import BeautifulSoup, Doctype
# minimal html document
doc = """<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html/>"""
# the modified doctype tag
doctype = """html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
[<!ATTLIST span bodyref CDATA #IMPLIED>]"""
soup = BeautifulSoup(doc, features='html.parser')
for item in soup.contents:
if isinstance(item, Doctype):
item.replace_with(Doctype(doctype))
break
print(soup.prettify(formatter=None))
给予:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
[<!ATTLIST span bodyref CDATA #IMPLIED>]>
<html>
</html>
关于python - 使用 BeautifulSoup 编辑 DOCTYPE 标签，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55910216/