/usr/lib/python3/dist-packages/oslo.messaging-4.6.1.egg-info/requires.txt is in python3-oslo.messaging 4.6.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | [:(python_version=='2.7' or python_version=='2.6')]
futures>=3.0
|