/usr/lib/python2.7/dist-packages/rospy/impl/ is in python-rospy 1.13.5+ds1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/rospy/impl/__init__.py
/usr/lib/python2.7/dist-packages/rospy/impl/init.py
/usr/lib/python2.7/dist-packages/rospy/impl/masterslave.py
/usr/lib/python2.7/dist-packages/rospy/impl/paramserver.py
/usr/lib/python2.7/dist-packages/rospy/impl/registration.py
/usr/lib/python2.7/dist-packages/rospy/impl/rosout.py
/usr/lib/python2.7/dist-packages/rospy/impl/simtime.py
/usr/lib/python2.7/dist-packages/rospy/impl/statistics.py
/usr/lib/python2.7/dist-packages/rospy/impl/tcpros.py
/usr/lib/python2.7/dist-packages/rospy/impl/tcpros_base.py
/usr/lib/python2.7/dist-packages/rospy/impl/tcpros_pubsub.py
/usr/lib/python2.7/dist-packages/rospy/impl/tcpros_service.py
/usr/lib/python2.7/dist-packages/rospy/impl/transport.py
/usr/lib/python2.7/dist-packages/rospy/impl/udpros.py
/usr/lib/python2.7/dist-packages/rospy/impl/validators.py