mbxml.py 文件源码

def fixtag(tag, namespaces):
        # given a decorated tag (of the form {uri}tag), return prefixed
        # tag and namespace declaration, if any
        if isinstance(tag, ET.QName):
            tag = tag.text
        namespace_uri, tag = tag[1:].split("}", 1)
        prefix = namespaces.get(namespace_uri)
        if prefix is None:
            prefix = "ns%d" % len(namespaces)
            namespaces[namespace_uri] = prefix
            if prefix == "xml":
                xmlns = None
            else:
                xmlns = ("xmlns:%s" % prefix, namespace_uri)
        else:
            xmlns = None
        return "%s:%s" % (prefix, tag), xmlns