# 13.8 `xml.dom.pulldom` -- Support for building partial DOM trees

New in version 2.0.

`xml.dom.pulldom` allows building only selected portions of a Document Object Model representation of a document from SAX events.

class `PullDOM`( | [documentFactory])

  `xml.sax.handler.ContentHandler` implementation that ...

class `DOMEventStream`( | stream, parser, bufsize)

  ...

class `SAX2DOM`( | [documentFactory])

  `xml.sax.handler.ContentHandler` implementation that ...

`parse`( | stream_or_string[, parser[, bufsize]])

  ...

`parseString`( | string[, parser])

  ...

`default_bufsize`
  Default value for the busize parameter to `parse()`. Changed in version 2.1: The value of this variable can be changed before calling `parse()` and the new value will take effect.