Something

#ls -la /usr/bin/python
#lrwxrwxrwx 1 root root 9 2007-11-07 12:38 /usr/bin/python -> python2.4
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echo $PYTHONPATH -> empty -> not set
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#dpkg -l | grep -i python-libxml2
ii  python-libxml2                                          2.6.27.dfsg-1                   Python bindings for the GNOME XML library
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# export PYTHONPATH=/usr/lib/python2.4/site-packages/
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/sync-engine/tools# ./list_partnerships.py
Traceback (most recent call last):
  File "./list_partnerships.py", line 3, in ?
    import dbus
  File "/var/lib/python-support/python2.4/dbus/__init__.py", line 1, in ?
    from _dbus import *
  File "/var/lib/python-support/python2.4/dbus/_dbus.py", line 48, in ?
    from proxies import *
  File "/var/lib/python-support/python2.4/dbus/proxies.py", line 2, in ?
    import introspect_parser
  File "/var/lib/python-support/python2.4/dbus/introspect_parser.py", line 1, in ?
    import libxml2
  File "/usr/local/lib/python2.4/site-packages/libxml2.py", line 1, in ?
    import libxml2mod
ImportError: /usr/local/lib/python2.4/site-packages/libxml2mod.so: undefined symbol: xmlTextReaderSetup