/usr/share/doc/python-apt-doc/html/_sources/whatsnew/index.txt is in python-apt-doc 1.1.0~beta1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | What's new in python-apt
========================
.. toctree::
:maxdepth: 2
:glob:
*
|