使用xml.etree或Dom API的Python中的XML解析问题

我有以下解析XML文件的简单代码。问题是，如果XML文件中的名称空间包含“：”，则会出现错误。没有它，没有问题。当我从XML中删除“：”时，当我在“ Junos and Style”之间使用“：”时，就会发生这种情况。请指教。

失败：

<interface-information xmlns="http://xml.juniper.net/junos/12.1X47/junos-interface" **junos:style**="brief">

适用于：

<interface-information xmlns="http://xml.juniper.net/junos/12.1X47/junos-interface" **junosstyle**="brief">

Python脚本：

from xml.dom.minidom import parse
import xml.dom.minidom


DOMTree = xml.dom.minidom.parse("test.xml")
collection = DOMTree.documentElement
if collection.hasAttribute("xmlns"):
   print "Root element : %s" % collection.getAttribute("xmlns")

Interfaces = collection.getElementsByTagName("logical-interface")


for rname in Interfaces:
   print "*****Interface*****"
   rtype = rname.getElementsByTagName('name')[0]
   print "Type: %s" % rtype.childNodes[0].data

这是错误：

Traceback (most recent call last):
  File "test.py", line 48, in <module>
    DOMTree = xml.dom.minidom.parse("test.xml")
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/dom/minidom.py", line 1921, in parse
    return expatbuilder.parse(file)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/dom/expatbuilder.py", line 924, in parse
    result = builder.parseFile(fp)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/dom/expatbuilder.py", line 207, in parseFile
    parser.Parse(buffer, 0)
xml.parsers.expat.ExpatError: unbound prefix: line 2, column 0

在“ Junos and Style”之间的XML中不包含“：”是可行的

这是完整的XML：

<?xml version="1.0"?>
<interface-information xmlns="http://xml.juniper.net/junos/12.1X47/junos-interface" junos:style="brief">
<logical-interface>
<name>reth4.10</name>
<description>
Test description
</description>
<if-config-flags>
<iff-snmp-traps/>
<internal-flags>
0x0
</internal-flags>
</if-config-flags>
<encapsulation>
ENET2
</encapsulation>
<filter-information>
</filter-information>
<logical-interface-zone-name>
Test2
</logical-interface-zone-name>
<allowed-host-inbound-traffic>
<inbound-ping/>
</allowed-host-inbound-traffic>
<address-family>
<address-family-name>
inet
</address-family-name>
<interface-address>
</interface-address>
</address-family>
<address-family>
<address-family-name>
multiservice
</address-family-name>
</address-family>
</logical-interface>
</interface-information>