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PyXMPP – Python Jabber/XMPP implementation


PyXMPP is a Python XMPP (RFC 3920,3921) implementation, including some of the well-known extensions. It is based on libxml2 -- fast and fully-featured XML parser.

PyXMPP provides most core features of the XMPP protocol and several JSF-defined extensions. PyXMPP provides building blocks for creating Jabber clients and components. Developer uses them to setup XMPP streams, handle incoming events and create outgoing stanzas (XMPP "packets").

Please note: this project is becoming obsolete, as now PyXMPP2 is being developed. PyXMPP2 is a modern rewrite of PyXMPP, using ElementTree instead of libxml2.


  • nearly complete XMPP Core (RFC 3920) protocol for client connections (includes SASL, TLS and Strinprep).
  • mostly complete XMPP IM (RFC 3921) protocol (lacks privacy lists)
  • XMPP error objects including translations to and from legacy codes for backward compatibility (JEP-0086).
  • legacy authentication ("digest" and "plain") (JEP-0078).
  • component protocol (JEP-0114).
  • Service Discovery (JEP-0030).
  • vCards -- both Jabber "vcard-temp" and RFC 2426
  • basic parts of the Multi-User Chat protocol (JEP-0045)
  • delayed delivery timestamps (JEP-0091).
  • Data Forms (JEP-0004).
  • In-Band Registration (JEP-0077).


For PyXMPP you will need:

  • Python. Python 2.6 required.
  • libxml2. Recent release (>=2.6.11) with python bindings is required. Additionally, all development files for libxml2 (usually in separate libxml2-devel package) are recommended for compilation of PyXMPP for best performance. PyXMPP 1.0 was tested with libxml2-2.7.6.
  • dnspython. PyXMPP 1.0 was tested with version 1.6.0.


To make sure you have all the requirements listed above or to prepare limited (without the binary extension) build of PyXMPP you may want to run:


You may manually pick the limited or full build of PyXMPP by editing the build.cfg file.

To build the package just invoke:

python build

To install it:

python install

If you had some older version of PyXMPP it is better to uninstall it (delete pyxmpp subdirectory os your site-packages directory) before installing this one or things may not work correctly.

You may also try:



make install



PyXMPP was written and is maintained by Jacek Konieczny <>.

To report bugs or request features use the GitHub interface.

For discussion you may join the PyXMPP mailing list.


Current source code is available via GitHub at:


PyXMPP is free software, licenced under the GNU LGPL. See the COPYING file for details.


XMPP implementation for Python




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