/usr/lib/python3/dist-packages/fixtures/_fixtures/ is in python3-fixtures 3.0.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/fixtures/_fixtures/__init__.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/environ.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/logger.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/mockpatch.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/monkeypatch.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/packagepath.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/popen.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/pythonpackage.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/pythonpath.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/streams.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/tempdir.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/temphomedir.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/timeout.py
/usr/lib/python3/dist-packages/fixtures/_fixtures/warnings.py