/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/ is in python-schooltool.gradebook 2.6.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/README.selenium.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/__init__.py
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/comment_cell_modal.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/course_worksheet_new_section.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/default_section.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/gradebook_tab.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/hiding_report_worksheets.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/hiding_worksheets.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/ignore_minimum_score.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/itworks.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/itworks_journal.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/linked_column_recursion_bug.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/mygrades.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/navigation.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/popup_menus.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/selenium_extensions.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/test_selenium.py
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/weighting_categories.txt
/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/stests/weighting_categories_not_hundred.txt