/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/ is in python-oslo.messaging 4.6.1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/__init__.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/dealer/
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/dealer/__init__.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/dealer/zmq_dealer_call_publisher.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/dealer/zmq_dealer_publisher.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/zmq_pub_publisher.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/zmq_publisher_base.py
/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/zmq_push_publisher.py