I have an xml I am parsing, making some changes and saving out to a new file. It has the declaration <?xml version="1.0" encoding="utf-8" standalone="yes"?>
which I would like to keep. When I am saving out my new file I am loosing the standalone="yes"
bit. How can I keep it in? Here is my code:
templateXml = """<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<package>
<provider>Some Data</provider>
<studio_display_name>Some Other Data</studio_display_name>
</package>"""
from lxml import etree
tree = etree.fromstring(templateXml)
xmlFileOut = '/Users/User1/Desktop/Python/Done.xml'
with open(xmlFileOut, "w") as f:
f.write(etree.tostring(tree, pretty_print = True, xml_declaration = True, encoding='UTF-8'))
您可以将standalone
关键字参数传递给tostring()
:
etree.tostring(tree, pretty_print = True, xml_declaration = True, encoding='UTF-8', standalone=True)
Specify standalone
using tree.docinfo.standalone .
Try following:
from lxml import etree
tree = etree.fromstring(templateXml).getroottree() # NOTE: .getroottree()
xmlFileOut = '/Users/User1/Desktop/Python/Done.xml'
with open(xmlFileOut, "w") as f:
f.write(etree.tostring(tree, pretty_print=True, xml_declaration=True,
encoding=tree.docinfo.encoding,
standalone=tree.docinfo.standalone))
If you want to show the standalone='no'
argument in your XML header, you have to set it to False
instead of 'no'. Just like this:
etree.tostring(tree, pretty_print = True, xml_declaration = True, encoding='UTF-8', standalone=False)
If not, standalone will be set to 'yes' by default.
etree.tostring(tree, pretty_print = True, xml_declaration = True, encoding='UTF-8')
Will add the declaration if you're using lxml, however I noticed their declaration uses semi-quotes instead of full quotes.
You can also get the exact declaration you want by just concatenating the output with a static string you need:
xml = etree.tostring(tree, pretty_print = True, encoding='UTF-8')
xml = '<?xml version=\"1.0\" encoding=\"utf-8\"?>\n' + xml
If You want to disable outputting standalone
at all pass None
instead of True
or False
. Sounds logical but took some time to actually find and test it.
etree.tostring(tree, xml_declaration = True, encoding='utf-8', standalone=None)
or using context manager and stream etree.xmlfile
serialization:
with etree.xmlfile(open('/tmp/test.xml'), encoding='utf-8') as xf:
xf.write_declaration(standalone=None)
with xf.element('html'):
with xf.element('body'):
element = etree.Element('p')
element.text = 'This is paragraph'
xf.write(element)
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.