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# 19.10. `xml.dom.pulldom` — Support for building partial DOM trees

New in version 2.0.

Source code: Lib/xml/dom/pulldom.py

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

Warning

The `xml.dom.pulldom` module is not secure against maliciously constructed data. If you need to parse untrusted or unauthenticated data see XML vulnerabilities.

class `xml.dom.pulldom.``PullDOM`([documentFactory])

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

class `xml.dom.pulldom.``DOMEventStream`(stream, parser, bufsize)

  ...

class `xml.dom.pulldom.``SAX2DOM`([documentFactory])

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

`xml.dom.pulldom.``parse`(stream_or_string[, parser[, bufsize]])

  ...

`xml.dom.pulldom.``parseString`(string[, parser])

  ...

`xml.dom.pulldom.``default_bufsize`

  Default value for the bufsize 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.

## 19.10.1. DOMEventStream Objects

`DOMEventStream.``getEvent`()

  ...

`DOMEventStream.``expandNode`(node)

  ...

`DOMEventStream.``reset`()

  ...

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