如何使用 Python 从 XML 文件复制特定的 XML 记录块？

Question

我想从 XML 文件中提取特定的 XML 文件块并使用 Python 3.8 将其复制到另一个文件。我尝试了所有类似问题的答案。不幸的是，我做不到。任何帮助将不胜感激。

样本XML文件

<?xml version="1.0" encoding="utf-8"?>
<bookstores>
   <bookstore>
        <book category="cooking">
            <title lang="en">Everyday Italian</title>
            <author>Giada De Laurentiis</author>
            <year>2005</year>
            <price>30.00</price>
        </book>
        <miscellaneous id="1000611004" />
   </bookstore>
   <bookstore>
        <book category="children">
            <title lang="en">Harry Potter</title>
            <author>J K. Rowling</author>
            <year>2005</year>
            <price>29.99</price>
        </book>
        <miscellaneous id="1000611067" />
    </bookstore>
    <bookstore>
        <book category="children">
            <title lang="en">Harry Potter</title>
            <author>J K. Rowling</author>
            <year>2005</year>
            <price>29.99</price>
        </book>
        <miscellaneous id="3450611067" />
    </bookstore>
</bookstores>

示例Python脚本

在这里，我正在检查 orderIds 列表中的项目是否与 miscellaneous[ 的 id 属性匹配=32=]。如果匹配，则需要将整个 XML 块复制到另一个文件。

orderIds = ["1000611004", "1000611067"]

mytree = ET.parse(xmlFile)
myroot = mytree.getroot()

for x in myroot.iter():
    if(x.tag == 'miscellaneous'):
        attribute = x.attrib
        idToCheck = attribute['id']
        for id in orderIds:
            if(id == idToCheck):
                --Confused Part To Be Filled--

预期输出

<bookstore>
    <book category="cooking">
        <title lang="en">Everyday Italian</title>
        <author>Giada De Laurentiis</author>
        <year>2005</year>
        <price>30.00</price>
    </book>
    <miscellaneous id="1000611004" />
</bookstore>
<bookstore>
    <book category="children">
        <title lang="en">Harry Potter</title>
        <author>J K. Rowling</author>
        <year>2005</year>
        <price>29.99</price>
    </book>
    <miscellaneous id="1000611067" />
</bookstore>

Answer 1

你可以试试：

tree = ET.parse('xmlfile')
root = tree.getroot()
orderIds = ["1000611004", "1000611067"]
bookstore_nodes = root.findall('.//bookstore')
with open('output.xml', 'w') as f:
    for bn in bookstore_nodes:
        misc_node = bn.findall('.//miscellaneous')
        if len(misc_node) > 0 and misc_node[0].attrib['id'] in orderIds:
            f.write(ET.tostring(bn).decode('utf-8'))