/usr/lib/python2.7/dist-packages/Epigrass/elasticnodes.py is in epigrass 2.0.4-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/Epigrass/../../../../share/pyshared/Epigrass/elasticnodes.py