/usr/lib/python2.7/dist-packages/past/ is in python-future 0.15.2-4ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/past/__init__.py
/usr/lib/python2.7/dist-packages/past/builtins/
/usr/lib/python2.7/dist-packages/past/builtins/__init__.py
/usr/lib/python2.7/dist-packages/past/builtins/misc.py
/usr/lib/python2.7/dist-packages/past/builtins/noniterators.py
/usr/lib/python2.7/dist-packages/past/tests/
/usr/lib/python2.7/dist-packages/past/tests/__init__.py
/usr/lib/python2.7/dist-packages/past/translation/
/usr/lib/python2.7/dist-packages/past/translation/__init__.py
/usr/lib/python2.7/dist-packages/past/types/
/usr/lib/python2.7/dist-packages/past/types/__init__.py
/usr/lib/python2.7/dist-packages/past/types/basestring.py
/usr/lib/python2.7/dist-packages/past/types/olddict.py
/usr/lib/python2.7/dist-packages/past/types/oldstr.py
/usr/lib/python2.7/dist-packages/past/utils/
/usr/lib/python2.7/dist-packages/past/utils/__init__.py