/usr/lib/python2.7/dist-packages/apt/ is in python-apt 1.1.0~beta1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/apt/__init__.py
/usr/lib/python2.7/dist-packages/apt/auth.py
/usr/lib/python2.7/dist-packages/apt/cache.py
/usr/lib/python2.7/dist-packages/apt/cdrom.py
/usr/lib/python2.7/dist-packages/apt/debfile.py
/usr/lib/python2.7/dist-packages/apt/package.py
/usr/lib/python2.7/dist-packages/apt/progress/
/usr/lib/python2.7/dist-packages/apt/progress/__init__.py
/usr/lib/python2.7/dist-packages/apt/progress/base.py
/usr/lib/python2.7/dist-packages/apt/progress/text.py
/usr/lib/python2.7/dist-packages/apt/utils.py
/usr/lib/python2.7/dist-packages/aptsources/__init__.py
/usr/lib/python2.7/dist-packages/aptsources/distinfo.py
/usr/lib/python2.7/dist-packages/aptsources/distro.py
/usr/lib/python2.7/dist-packages/aptsources/sourceslist.py