/usr/lib/python3/dist-packages/werkzeug/debug/shared/jquery.js is in python3-werkzeug 0.14.1+dfsg1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python3/dist-packages/werkzeug/debug/shared/../../../../../../share/javascript/jquery/jquery.js