/usr/lib/python2.7/dist-packages/schooltool/devmode/ is in python-schooltool 1:2.1.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/schooltool/devmode/__init__.py
/usr/lib/python2.7/dist-packages/schooltool/devmode/apidoc.css
/usr/lib/python2.7/dist-packages/schooltool/devmode/apidoc.py
/usr/lib/python2.7/dist-packages/schooltool/devmode/apidoc.txt
/usr/lib/python2.7/dist-packages/schooltool/devmode/configure.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode-configure.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode-ftesting-overrides.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode-overrides.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode.css
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode.pt
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode.py
/usr/lib/python2.7/dist-packages/schooltool/devmode/devmode.txt
/usr/lib/python2.7/dist-packages/schooltool/devmode/f_unauthorized.pt
/usr/lib/python2.7/dist-packages/schooltool/devmode/flourish-overrides.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/flourish.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/ftesting.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/ftests.py
/usr/lib/python2.7/dist-packages/schooltool/devmode/introspector.css
/usr/lib/python2.7/dist-packages/schooltool/devmode/overrides.zcml
/usr/lib/python2.7/dist-packages/schooltool/devmode/skin.py
/usr/lib/python2.7/dist-packages/schooltool/devmode/unauthorized.pt