html - 删除 HTML 标签中的注释

Question

引用How can I strip comment tags from HTML using BeautifulSoup? ，我正在尝试删除以下标签中的评论

>>> h
<h4 class="col-sm-4"><!-- react-text: 124 -->52 Week High/Low:<!-- /react-text --><b><!-- react-text: 126 --> ₹ <!-- /react-text --><!-- react-text: 127 -->394.00<!-- /react-text --><!-- react-text: 128 --> / ₹ <!-- /react-text --><!-- react-text: 129 -->252.10<!-- /react-text --></b></h4>

我的代码 -

comments = h.findAll(text=lambda text:isinstance(text, Comment))
[comment.extract() for comment in comments]
print h

但是搜索评论却一无所获。我想从上述标签中提取 2 个值 - “52 周最高价/最低价:” 和 “卢比 394.00/卢比 252.10”。

我还尝试使用删除整个 html 中的标签

soup = BeautifulSoup(html)
comments = soup.findAll(text=lambda text:isinstance(text, Comment))
[comment.extract() for comment in comments]
print soup

但是评论仍然存在..有什么建议吗？

Answer 1

您使用的是Python2.7和BeautifulSoup4吗？如果不是后者，我会安装 BeautifulSoup4。

pip install beautifulsoup4

以下脚本对我有用。我刚刚复制并粘贴了您上面的问题并运行了它。

from bs4 import BeautifulSoup, Comment

html = """<h4 class="col-sm-4"><!-- react-text: 124 -->52 Week High/Low:<!-- /react-text --><b><!-- react-text: 126 --> ₹ <!-- /react-text --><!-- react-text: 127 -->394.00<!-- /react-text --><!-- react-text: 128 --> / ₹ <!-- /react-text --><!-- react-text: 129 -->252.10<!-- /react-text --></b></h4>"""
soup = BeautifulSoup(html)
comments = soup.findAll(text=lambda text:isinstance(text, Comment))

# nit: It isn't good practice to use a list comprehension only for its
# side-effects. (Wastes space constructing an unused list)
for comment in comments:
   comment.extract()

print soup

Note: It's a good thing you posted the print statement. Wouldn't have known it was Python 2 otherwise. Posting the Python version helps too.