/usr/lib/python3/ is in python3-maas-client 2.0.0~beta3+bzr4941-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/apiclient/
/usr/lib/python3/dist-packages/apiclient/maas_client.py
/usr/lib/python3/dist-packages/apiclient/encode_json.py
/usr/lib/python3/dist-packages/apiclient/__init__.py
/usr/lib/python3/dist-packages/apiclient/creds.py
/usr/lib/python3/dist-packages/apiclient/multipart.py
/usr/lib/python3/dist-packages/apiclient/utils.py
/usr/lib/python3/dist-packages/maascli/
/usr/lib/python3/dist-packages/maascli/auth.py
/usr/lib/python3/dist-packages/maascli/__init__.py
/usr/lib/python3/dist-packages/maascli/__main__.py
/usr/lib/python3/dist-packages/maascli/api.py
/usr/lib/python3/dist-packages/maascli/cli.py
/usr/lib/python3/dist-packages/maascli/actions/
/usr/lib/python3/dist-packages/maascli/actions/boot_resources_create.py
/usr/lib/python3/dist-packages/maascli/actions/__init__.py
/usr/lib/python3/dist-packages/maascli/command.py
/usr/lib/python3/dist-packages/maascli/profile.py
/usr/lib/python3/dist-packages/maascli/parser.py
/usr/lib/python3/dist-packages/maascli/utils.py
/usr/lib/python3/dist-packages/maascli/config.py