如何在转储时移除ns0标签
我尝试使用 lxml 的 iterparse
来解析文件,因为实际的文件会非常大。以下是我的代码:
import xml.etree.cElementTree as etree
filename = r'D:\test\Books.xml'
context = iter(etree.iterparse(filename, events=('start', 'end')))
_, root = next(context)
for event, elem in context:
if event == 'start' and elem.tag == '{http://www.book.org/Book-19200/biblography}Book':
print(etree.dump(elem))
root.clear()
我的 XML 文件看起来是这样的:
<Books>
<Book xmlns="http://www.book.org/Book-19200/biblography"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
ISBN="519292296"
xsi:schemaLocation="http://www.book.org/Book-19200/biblography ../../book.xsd
http://www.w3.org/2000/12/xmldsig# ../../xmldsig-core-schema.xsd">
<Detail ID="67">
<BookName>Code Complete 2</BookName>
<Author>Steve McConnell</Author>
<Pages>960</Pages>
<ISBN>0735619670</ISBN>
<BookName>Application Architecture Guide 2</BookName>
<Author>Microsoft Team</Author>
<Pages>496</Pages>
<ISBN>073562710X</ISBN>
</Detail>
</Book>
<Book xmlns="http://www.book.org/Book-19200/biblography"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
ISBN="519292296"
xsi:schemaLocation="http://www.book.org/Book-19200/biblography ../../book.xsd
http://www.w3.org/2000/12/xmldsig# ../../xmldsig-core-schema.xsd">
<Detail ID="87">
<BookName>Rocking Python</BookName>
<Author>Guido Rossum</Author>
<Pages>960</Pages>
<ISBN>0735619690</ISBN>
<BookName>Python Rocks</BookName>
<Author>Microsoft Team</Author>
<Pages>496</Pages>
<ISBN>073562710X</ISBN>
</Detail>
</Book>
</Books>
运行上面的代码会生成类似这样的内容:
<ns0:Book xmlns:ns0="http://www.book.org/Book-19200/biblography" xmlns:xsi="http://www.w3.org/2001/XMLSchema-ins
ance" ISBN="519292296" xsi:schemaLocation="http://www.book.org/Book-19200/biblography ../../book.xsd http:/
www.w3.org/2000/12/xmldsig# ../../xmldsig-core-schema.xsd">
<ns0:Detail ID="67">
<ns0:BookName>Code Complete 2</ns0:BookName>
<ns0:Author>Steve McConnell</ns0:Author>
<ns0:Pages>960</ns0:Pages>
<ns0:ISBN>0735619670</ns0:ISBN>
<ns0:BookName>Application Architecture Guide 2</ns0:BookName>
<ns0:Author>Microsoft Team</ns0:Author>
<ns0:Pages>496</ns0:Pages>
<ns0:ISBN>073562710X</ns0:ISBN>
</ns0:Detail>
</ns0:Book>
我该如何确保打印出来的 XML 片段没有 ns0 前缀呢?我正在使用 Python 3。
1 个回答
16
在你的程序中添加
etree.register_namespace("", "http://www.book.org/Book-19200/biblography")
这个功能是用来注册一个命名空间前缀的,目的是为了在序列化的时候使用(在这里的意思是没有前缀)。
参考链接:http://docs.python.org/3/library/xml.etree.elementtree.html#xml.etree.ElementTree.register_namespace