/usr/lib/python2.7/dist-packages/sagenb/notebook/ is in python-sagenb 1.0.1+ds1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/sagenb/notebook/__init__.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/all.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/applet.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/auth.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/cell.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/challenge.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/colorize.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/BaseConvert.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/JavaScriptCompressor.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/SourceMap.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/__init__.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/all.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/compress/nodoctest.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/conf.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/config.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/css.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/docHTMLProcessor.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/interact.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/jquery.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/js.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/keyboards.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/mailsender.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/misc.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/notebook.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/notebook_object.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/notification.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/register.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/run_notebook.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/sage_email.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/sagetex.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/server_conf.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/smtpsend.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/template.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/tutorial.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/user.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/user_conf.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/user_db.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/user_manager.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/wiki2html.py
/usr/lib/python2.7/dist-packages/sagenb/notebook/worksheet.py