This will make it incompatible with the version found in Python 2.0.
Does this need to be done to PyXML too?

Changes that might break existing code are marked with (!) below.

- Formatting nit: no spaces inside parentheses: foo( a ) -> foo(a).

- Break long lines.

- (!) Fix getAttribute() and getAttributeNS() to return "" instead of
  raising KeyError when the attribute is not found.

- (!) Fix getAttributeNodeNS() to return None instead of raising
  KeyError.  (Curiously, getAttributeNode() already did this.)

- Added hasAttributes(), which returns true iff the node has any
  attributes.  )This is DOM level 3.)

- (!) In createDocument(), if the qualified name is not empty,
  actually create and insert the first element with that name (this
  will become doc.documentElement).  MvL believes that it should be an
  error to specify an empty qualified name; I'm not going there today,
  since it would require making a matching change to pulldom.  Maybe
  MvL will do this.

- In Document.writexml(), insert an xml declaration at the top.  (This
  doesn't include the encoding since there's no way to specify the
  encoding.  If that's preferred, all writexml() methods should be
  fixed to support an optional encoding argument that they pass to
  each other -- and they should use it to encode all text they write,
  too.  Later.)