示例中如何按剧集 ID 对系列进行排序 xml

Question

如何根据剧集 ID 对下面 xml 中的系列进行排序？

<response>
  <movies_added/>
  <movies_removed/>
  <series_added>
    <series_meta_data>
      <displayName>Game of Thrones</displayName>
      <seriesItems>
        <seriesItem>
          <episodeName>Lord Snow</episodeName>
          <episodeID>S01E03</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>Winter Is Coming</episodeName>
          <episodeID>S01E01</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>The Kingsroad</episodeName>
          <episodeID>S01E02</episodeID>
        </seriesItem>
      </seriesItems>
    </series_meta_data>
    <series_meta_data>
      <displayName>Breaking Bad</displayName>
      <seriesItems>
        <seriesItem>
          <episodeName>Cat's in the Bag...</episodeName>
          <episodeID>S01E02</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>...And the Bag's in the River</episodeName>
          <episodeID>S01E03</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>Pilot</episodeName>
          <episodeID>S01E01</episodeID>
        </seriesItem>
      </seriesItems>
    </series_meta_data>
  </series_added>
  <series_removed/>
</response>

预期的输出应该是这样的：

<response>
  <movies_added/>
  <movies_removed/>
  <series_added>
    <series_meta_data>
      <displayName>Game of Thrones</displayName>
      <seriesItems>
        <seriesItem>
          <episodeName>Winter Is Coming</episodeName>
          <episodeID>S01E01</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>The Kingsroad</episodeName>
          <episodeID>S01E02</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>Lord Snow</episodeName>
          <episodeID>S01E03</episodeID>
        </seriesItem>
      </seriesItems>
    </series_meta_data>
    <series_meta_data>
      <displayName>Breaking Bad</displayName>
      <seriesItems>
        <seriesItem>
          <episodeName>Pilot</episodeName>
          <episodeID>S01E01</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>Cat's in the Bag...</episodeName>
          <episodeID>S01E02</episodeID>
        </seriesItem>
        <seriesItem>
          <episodeName>...And the Bag's in the River</episodeName>
          <episodeID>S01E03</episodeID>
        </seriesItem>
      </seriesItems>
    </series_meta_data>
  </series_added>
  <series_removed/>
</response>

编辑：这是我到目前为止尝试过的：

import xml.etree.ElementTree as ET


def get_episode_id(series_container):
    series_container.find("episodeID").text


tree = ET.parse("question.xml")

series_containers = tree.findall(".//series_meta_data/seriesItems")
print(series_containers)

for series_container in series_containers:
    series_container[:] = sorted(series_container, key=get_episode_id(series_container))

tree.write("new.xml")

并获得：

AttributeError: 'NoneType' object has no attribute 'text'

Answer 1

您的代码有几个问题。排序时用作键的函数需要 return 要比较的属性。您还需要调用可迭代元素的键，而不是可迭代本身。解决这些问题似乎可以生成工作代码

import xml.etree.ElementTree as ET


def get_episode_id(series_container):
    return series_container.find("episodeID").text


tree = ET.parse("question.xml")

series_containers = tree.findall(".//series_meta_data/seriesItems")

for series_container in series_containers:
    series_container[:] = sorted(series_container, key=get_episode_id)

tree.write("new.xml")

示例中如何按剧集 ID 对系列进行排序 xml

How to sort series by episode IDs in the example xml

python

elementtree