/usr/lib/ is in python3-certbot-nginx 0.28.0-1~deb9u1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/certbot_nginx/
/usr/lib/python3/dist-packages/certbot_nginx/__init__.py
/usr/lib/python3/dist-packages/certbot_nginx/configurator.py
/usr/lib/python3/dist-packages/certbot_nginx/constants.py
/usr/lib/python3/dist-packages/certbot_nginx/display_ops.py
/usr/lib/python3/dist-packages/certbot_nginx/http_01.py
/usr/lib/python3/dist-packages/certbot_nginx/nginxparser.py
/usr/lib/python3/dist-packages/certbot_nginx/obj.py
/usr/lib/python3/dist-packages/certbot_nginx/options-ssl-nginx.conf
/usr/lib/python3/dist-packages/certbot_nginx/parser.py
/usr/lib/python3/dist-packages/certbot_nginx/parser_obj.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/
/usr/lib/python3/dist-packages/certbot_nginx/tests/__init__.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/configurator_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/display_ops_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/http_01_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/nginxparser_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/obj_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/parser_obj_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/parser_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/tls_sni_01_test.py
/usr/lib/python3/dist-packages/certbot_nginx/tests/util.py
/usr/lib/python3/dist-packages/certbot_nginx/tls_sni_01.py
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/PKG-INFO
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/dependency_links.txt
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/entry_points.txt
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/requires.txt
/usr/lib/python3/dist-packages/certbot_nginx-0.28.0.egg-info/top_level.txt