/usr/lib/libreoffice/program/pythonloader.unorc is in python-uno 1:3.5.2-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [Bootstrap]
PYTHONHOME=file:///usr/lib/python2.7
PYTHONPATH=$PYTHONHOME $PYTHONHOME/site-packages $PYTHONHOME/lib-dynload $PYTHONHOME/lib-tk $ORIGIN
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