/usr/lib/python3/dist-packages/openid/yadis/ is in python3-openid 3.0.9-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/openid/yadis/__init__.py
/usr/lib/python3/dist-packages/openid/yadis/accept.py
/usr/lib/python3/dist-packages/openid/yadis/constants.py
/usr/lib/python3/dist-packages/openid/yadis/discover.py
/usr/lib/python3/dist-packages/openid/yadis/etxrd.py
/usr/lib/python3/dist-packages/openid/yadis/filters.py
/usr/lib/python3/dist-packages/openid/yadis/manager.py
/usr/lib/python3/dist-packages/openid/yadis/parsehtml.py
/usr/lib/python3/dist-packages/openid/yadis/services.py
/usr/lib/python3/dist-packages/openid/yadis/xri.py
/usr/lib/python3/dist-packages/openid/yadis/xrires.py