/usr/lib/python2.7/dist-packages/notebook/static/notebook/ is in python-notebook 5.2.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/notebook/static/notebook/css/
/usr/lib/python2.7/dist-packages/notebook/static/notebook/css/override.css
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/about.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/actions.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/cell.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbar.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/attachments.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/default.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/example.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/rawcell.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/slideshow.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/celltoolbarpresets/tags.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/clipboard.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/codecell.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/codemirror-ipython.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/codemirror-ipythongfm.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/commandpalette.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/completer.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/contexthint.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/kernelselector.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/keyboardmanager.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/main.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/main.min.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/main.min.js.map
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/maintoolbar.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/mathjaxutils.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/menubar.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/notebook.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/notificationarea.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/outputarea.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/pager.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/promises.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/quickhelp.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/savewidget.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/scrollmanager.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/searchandreplace.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/shortcuteditor.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/textcell.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/toolbar.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/tooltip.js
/usr/lib/python2.7/dist-packages/notebook/static/notebook/js/tour.js