在Python中基于XSD验证和填充XML中的默认值

为了跟进我的评论，这里有一些代码

from lxml import etreefrom lxml.html import parseschema_root = etree.XML('''<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:element name="a"> <xs:complexType>  <xs:sequence>   <xs:element name="b" maxOccurs="unbounded">    <xs:complexType>     <xs:attribute name="c" default="1" type="xs:string"/>    </xs:complexType>   </xs:element>  </xs:sequence> </xs:complexType></xs:element></xs:schema>''')xmls = '''<a> <b/> <b c="2"/></a>'''schema = etree.XMLSchema(schema_root)parser = etree.XMLParser(schema = schema, attribute_defaults = True)root = etree.fromstring(xmls, parser)result = etree.tostring(root, pretty_print=True, method="xml")print result

会给你

<a> <b c="1"/> <b c="2"/></a>

我稍微修改您的XSD，裹

xs:attribute

xs:complexType

attribute_defaults=True

etree.XMLParser()