[lxml-dev] Ignoring unknown namespaces in XML while validating

[Stefan Behnel]

Hi,

first of all: please don't respond to posts from a different thread when you
want to start a new one. Mail-Readers will sort the e-mail into the wrong
thread and confuse people.

micxer wrote:
> I'm using lxml primarily for validation of XML documents and requests of 
> UPnP devices. Since many vendors are going to make their devices DLNA 
> compliant, some additional XML elements appear in the XML docs. I would 
> have to pay for the DLNA specs so I have no other choice than deleting 
> these elements in advance and validate the XML afterwards. Is there an 
> easy way to do this with lxml? Am I missing something?

Not sure what your problem is exactly. Are these "additional elements" in a
specific namespace? That would make it easy to remove them:

  for el in root.getiterator("{http://the/namespace}*"):
      parent = el.getparent()
      if parent is not None: # not the root element
          parent.remove(el)

Or are they in other namespaces than the main one?

  MAIN_NS = "{http://the/namespace}"
  for el in root.getiterator("*"):
      if not el.tag.startswith(MAIN_NS):
          parent = el.getparent()
          if parent is not None: # not the root element
              parent.remove(el)

Similarly, if you have a set of tag names that must be kept or removed, you
can iterate over all elements and check the tag names against the set.

Does that solve your problem?

Stefan