/usr/lib/python2.7/dist-packages/Noyau/ascheckers.py is in eficas 6.4.0-1-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/Noyau/../../../../share/pyshared/Noyau/ascheckers.py