/usr/lib/python2.7/dist-packages/Wammu/IMAP.py is in wammu 0.36-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/Wammu/../../../../share/pyshared/Wammu/IMAP.py
/usr/lib/python2.7/dist-packages/Wammu/../../../../share/pyshared/Wammu/IMAP.py