/usr/ is in python3-testing.mysqld 1.4.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/python3/
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/testing/
/usr/lib/python3/dist-packages/testing/mysqld.py
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0-nspkg.pth
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/PKG-INFO
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/dependency_links.txt
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/namespace_packages.txt
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/requires.txt
/usr/lib/python3/dist-packages/testing.mysqld-1.4.0.egg-info/top_level.txt
/usr/share/
/usr/share/doc/
/usr/share/doc/python3-testing.mysqld/
/usr/share/doc/python3-testing.mysqld/changelog.Debian.gz
/usr/share/doc/python3-testing.mysqld/copyright
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/python3-testing.mysqld