/usr/lib/python3/dist-packages/postgresql/python/ is in python3-postgresql 1.0.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/postgresql/python/__init__.py
/usr/lib/python3/dist-packages/postgresql/python/command.py
/usr/lib/python3/dist-packages/postgresql/python/contextlib.py
/usr/lib/python3/dist-packages/postgresql/python/datetime.py
/usr/lib/python3/dist-packages/postgresql/python/decorlib.py
/usr/lib/python3/dist-packages/postgresql/python/doc.py
/usr/lib/python3/dist-packages/postgresql/python/element.py
/usr/lib/python3/dist-packages/postgresql/python/functools.py
/usr/lib/python3/dist-packages/postgresql/python/itertools.py
/usr/lib/python3/dist-packages/postgresql/python/msw.py
/usr/lib/python3/dist-packages/postgresql/python/os.py
/usr/lib/python3/dist-packages/postgresql/python/socket.py
/usr/lib/python3/dist-packages/postgresql/python/string.py
/usr/lib/python3/dist-packages/postgresql/python/structlib.py