/usr/lib/python2.7/dist-packages/nemu/node.py is in python-nemu 0.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/nemu/../../../../share/pyshared/nemu/node.py
/usr/lib/python2.7/dist-packages/nemu/../../../../share/pyshared/nemu/node.py