/usr/lib/python2.7/dist-packages/PyMca/EdfFileSimpleViewer.py is in pymca 4.5.0-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/PyMca/../../../../share/pyshared/PyMca/EdfFileSimpleViewer.py