Question

我有一个lxml元素，其子代构建如下：

xml = etree.Element('presentation')
format_xml = etree.SubElement(xml, 'format')
content_xml = etree.SubElement(xml, 'slides')

然后我有几个字符串，我希望它迭代并将每个字符串添加为幻灯片的子元素。每个字符串都是这样的：

<slide1>
    <title>My Presentation</title>
    <subtitle>A sample presentation</subtitle>
    <phrase>Some sample text
        <subphrase>Some more text</subphrase>
    </phrase>
</slide1>

如何将这些字符串作为子元素附加到slide元素？

Answer 1

只需追加：

import lxml.etree as etree

xml = etree.Element('presentation')
format_xml = etree.SubElement(xml, 'format')
content_xml = etree.SubElement(xml, 'slides')
new = """<slide1>
    <title>My Presentation</title>
    <subtitle>A sample presentation</subtitle>
    <phrase>Some sample text
        <subphrase>Some more text</subphrase>
    </phrase>
</slide1>"""


content_xml.append(etree.fromstring(new))


print(etree.tostring(xml,pretty_print=1))

哪个会给你：

<presentation>
  <format/>
  <slides>
    <slide1>
    <title>My Presentation</title>
    <subtitle>A sample presentation</subtitle>
    <phrase>Some sample text
        <subphrase>Some more text</subphrase>
    </phrase>
</slide1>
  </slides>
</presentation>

Answer 2

fromstring()函数会将XML字符串直接加载到您可以附加的Element实例中：

from lxml import etree as ET

slide = ET.fromstring(xml_string)
content_xml.append(slide)

使用lxml将字符串添加为子元素

2 个答案: