/usr/lib/python2.7/unittest/ is in libpython2.7-testsuite 2.7.6-8.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/unittest/test/
/usr/lib/python2.7/unittest/test/__init__.py
/usr/lib/python2.7/unittest/test/dummy.py
/usr/lib/python2.7/unittest/test/support.py
/usr/lib/python2.7/unittest/test/test_assertions.py
/usr/lib/python2.7/unittest/test/test_break.py
/usr/lib/python2.7/unittest/test/test_case.py
/usr/lib/python2.7/unittest/test/test_discovery.py
/usr/lib/python2.7/unittest/test/test_functiontestcase.py
/usr/lib/python2.7/unittest/test/test_loader.py
/usr/lib/python2.7/unittest/test/test_program.py
/usr/lib/python2.7/unittest/test/test_result.py
/usr/lib/python2.7/unittest/test/test_runner.py
/usr/lib/python2.7/unittest/test/test_setups.py
/usr/lib/python2.7/unittest/test/test_skipping.py
/usr/lib/python2.7/unittest/test/test_suite.py