/usr/lib/python2.7/dist-packages/ClusterShell/Worker/ is in clustershell 1.7-1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/EngineClient.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Exec.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Pdsh.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Popen.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Rsh.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Ssh.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Tree.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/Worker.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/__init__.py
/usr/lib/python2.7/dist-packages/ClusterShell/Worker/fastsubprocess.py