使用 python/ElementTree 和命名空间创建 xml 文档
我正在尝试创建一个内存中的 xml 文档,以便根的子节点都需要名称空间。
最终文档应如下所示:
<Feed>
<FeedEntity Id="0000"
xmlns="http://schemas.example.com/search/query/2010/5/revision">
<FeedRequest locale="en-US" title="<some value>"/>
</FeedEntity>
... another FeedEntity element ...
</Feed>
但是,当我打印出使用 ElementTree lib 创建的文档时,它看起来更像是这样:
<Feed>
<ns0:FeedEntity Id="0000"
xmlns:ns0="http://schemas.example.com/search/query/2010/5/revision">
<FeedRequest locale="en-US" title="<some value>"/>
</ns0:FeedEntity>
</Feed>
以下是我创建文档的方式:
counter = 0
namespace = "http://schemas.example.com/search/query/2010/5/revision"
root = Element("Feed")
node_name = "{%s}FeedEntity" % (namespace, );
feed_entity_element = Element(node_name)
feed_entity_element["Id"] = "%04d" % (counter,);
feed_request_element = Element("FeedRequest");
feed_request_element["Culture"] = self.culture;
feed_request_element["Query"] = address;
# append each of the elements to the xml document
feed_entity_element.append(feed_request_element);
root.append(feed_entity_element);
str_data = ET.tostring(root)
print str_data
如何摆脱“ns0”最终 XML 中的部分,因此它看起来更像上面提到的第一个示例?
I'm trying to create an in-memory xml document such that the root's child nodes all require a name space.
The final document should look something like this:
<Feed>
<FeedEntity Id="0000"
xmlns="http://schemas.example.com/search/query/2010/5/revision">
<FeedRequest locale="en-US" title="<some value>"/>
</FeedEntity>
... another FeedEntity element ...
</Feed>
However, when I print out the document I've created with ElementTree lib, it looks more like this:
<Feed>
<ns0:FeedEntity Id="0000"
xmlns:ns0="http://schemas.example.com/search/query/2010/5/revision">
<FeedRequest locale="en-US" title="<some value>"/>
</ns0:FeedEntity>
</Feed>
Here's how I'm creating the document:
counter = 0
namespace = "http://schemas.example.com/search/query/2010/5/revision"
root = Element("Feed")
node_name = "{%s}FeedEntity" % (namespace, );
feed_entity_element = Element(node_name)
feed_entity_element["Id"] = "%04d" % (counter,);
feed_request_element = Element("FeedRequest");
feed_request_element["Culture"] = self.culture;
feed_request_element["Query"] = address;
# append each of the elements to the xml document
feed_entity_element.append(feed_request_element);
root.append(feed_entity_element);
str_data = ET.tostring(root)
print str_data
How do I get rid of the "ns0" parts in the final XML so it looks more like the first example noted above?
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使用
xml.etree
,您无法获得第一个示例中的确切输出,但您可以使用(全局)register_namespace() 函数使用比“ns0”“更好”的前缀。例如:ET.register_namespace('rev', 'http://schemas.example.com/search/query/2010/5/revision')
将确保输出看起来像rev:FeedEntity
。然而,(兼容的)lxml 库在命名空间前缀方面更加灵活,并且 允许您在创建元素时提供前缀映射。
With
xml.etree
, you cannot get the exact output as in the first example, but you can use the (global) register_namespace() function to use a "better" prefix than "ns0". For example:ET.register_namespace('rev', 'http://schemas.example.com/search/query/2010/5/revision')
will make sure the output will look likerev:FeedEntity
.The (compatible) lxml library, however, is more flexible with regard to namespace prefixes, and allows you to provide a prefix mapping when creating an element.