/usr/lib/python2.7/dist-packages/fixtures/tests/ is in python-fixtures 0.3.6-1ubuntu1.
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/usr/lib/python2.7/dist-packages/fixtures/tests/__init__.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/__init__.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_environ.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_monkeypatch.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_packagepath.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_popen.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_pythonpackage.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_pythonpath.py
/usr/lib/python2.7/dist-packages/fixtures/tests/_fixtures/test_tempdir.py
/usr/lib/python2.7/dist-packages/fixtures/tests/helpers.py
/usr/lib/python2.7/dist-packages/fixtures/tests/test_fixture.py
/usr/lib/python2.7/dist-packages/fixtures/tests/test_testcase.py