如何将名称空间从lxml树中剥离？

Question

从使用python删除XML中的子元素开始…

感谢@Tichodroma，我有以下代码：

如果可以使用lxml，请尝试以下操作：

 import lxml.etree

 tree = lxml.etree.parse("leg.xml")
 for dog in tree.xpath("//Leg1:Dog",
                       namespaces={"Leg1": "http://what.not"}):
     parent = dog.xpath("..")[0]
     parent.remove(dog)
     parent.text = None
 tree.write("leg.out.xml")

现在leg.out.xml看起来像这样：

 <?xml version="1.0"?>
 <Leg1:MOR xmlns:Leg1="http://what.not" oCount="7">
   <Leg1:Order>
     <Leg1:CTemp id="FO">
       <Leg1:Group bNum="001" cCount="4"/>
       <Leg1:Group bNum="002" cCount="4"/>
     </Leg1:CTemp>
     <Leg1:CTemp id="GO">
       <Leg1:Group bNum="001" cCount="4"/>
       <Leg1:Group bNum="002" cCount="4"/>
     </Leg1:CTemp>
   </Leg1:Order>
 </Leg1:MOR>

如何修改代码以Leg1:从所有元素的标记名称中删除名称空间前缀？

Answer 1

从每个元素删除名称空间前缀的一种可能方法：

def strip_ns_prefix(tree):
    #iterate through only element nodes (skip comment node, text node, etc) :
    for element in tree.xpath('descendant-or-self::*'):
        #if element has prefix...
        if element.prefix:
            #replace element name with its local name
            element.tag = etree.QName(element).localname
    return tree

在xpath中有名称空间检查而不是使用ifstatement的另一个版本：

def strip_ns_prefix(tree):
    #xpath query for selecting all element nodes in namespace
    query = "descendant-or-self::*[namespace-uri()!='']"
    #for each element returned by the above xpath query...
    for element in tree.xpath(query):
        #replace element name with its local name
        element.tag = etree.QName(element).localname
    return tree