/usr/share/doc/python-apt/html/_sources/ is in python-apt-doc 0.8.3ubuntu7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/python-apt/html/_sources/c++/
/usr/share/doc/python-apt/html/_sources/c++/api.txt
/usr/share/doc/python-apt/html/_sources/c++/embedding.txt
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/usr/share/doc/python-apt/html/_sources/whatsnew/
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/usr/share/doc/python-apt/html/_sources/whatsnew/0.8.0.txt
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