Standalone=声明“是”lxml

Question

我正在解析一个xml，进行一些更改并保存到一个新文件中。它有我想保留的声明<?xml version="1.0" encoding="utf-8" standalone="yes"?>。当我保存我的新文件时，我正在释放standalone="yes"位。我怎么才能把它藏在里面？这是我的代码：

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'))

Answer 1

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)

Answer 2

使用standalone指定tree.docinfo.standalone。

尝试以下几个方面：

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))

Answer 3

如果要在XML中显示standalone='no'参数，则必须将其设置为False，而不是“no”。就像这样：

etree.tostring(tree, pretty_print = True, xml_declaration = True, encoding='UTF-8', standalone=False)

如果没有，则默认情况下独立设置为“是”。