python lxml.html添加参数
python lxml.html添加参数
提问于 2017-03-28 17:23:30
我有一个html模板，我想在其中添加一些内容。该模板如下所示：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Data Base</title>
<link rel="stylesheet" href="stylesheet.css" />
</head>
<body>
<h1>Data Base</h1>
<div class="file_explorer">
</div>
<div class="info_screen">
</div>
</body>
</html>我想搜索<div class="file_explorer"></div>并向其添加一些参数。之后，它应该看起来像这样：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Data Base</title>
<link rel="stylesheet" href="stylesheet.css" />
</head>
<body>
<h1>Data Base</h1>
<div class="file_explorer">
<p class="folder">Folder_1</p>
<p class="folder">Folder_2</p>
</div>
<div class="info_screen">
</div>
</body>
</html>因此，我尝试解析html-template，并希望搜索file_explorer标记来添加段落。我如何搜索它们并在之后添加段落。我尝试过html.cssselector，但它不起作用。请帮帮我。这是我的代码：
from lxml import html
from os import path
class HtmlGenerator:
@staticmethod
def modify_html(html_path, list_folders):
html_path = path.abspath(html_path)
parser = html.HTMLParser(remove_blank_text=True)
if path.isfile(html_path) and html_path.endswith(".html"):
tree = html.parse(html_path, parser)
# search for <div class="file_explorer"> [MISSING]
for folder in list_folders:
# add folder as paragraph to html [MISSING]
tree.write(html_path, pretty_print=True)提前谢谢。
回答 1
Stack Overflow用户
发布于 2017-03-28 18:04:59
您可以使用XPath在模板中查找目标div，然后使用E-factory构建新元素：
from lxml.html import builder as E
....
tree = html.parse(html_path, parser)
root = tree.getroot()
# search for <div class="file_explorer">
div = root.find('.//div[@class="file_explorer"]')
for folder in list_folders:
# add folder as paragraph to html
# I assume `folder` as a string like 'Folder_1', 'Folder_2', ...
d.append(E.P(E.CLASS('folder'), folder))
tree.write(html_path, pretty_print=True)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/43065639
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