/usr/lib/python2.7/dist-packages/notebook/static/base/js/ is in python-notebook 5.2.2-1.
This file is owned by root:root, with mode 0o755.
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/usr/lib/python2.7/dist-packages/notebook/static/base/js/dialog.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/events.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/i18n.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/i18nload.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/keyboard.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/namespace.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/notificationarea.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/notificationwidget.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/page.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/promises.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/security.js
/usr/lib/python2.7/dist-packages/notebook/static/base/js/utils.js