/usr/lib/python2.7/dist-packages/PyQt4/Qwt5/ipy_user_conf.py is in python-qwt5-qt4 5.2.1~cvs20091107+dfsg-7+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/PyQt4/Qwt5/../../../../../share/pyshared/PyQt4/Qwt5/ipy_user_conf.py