/usr/share/texlive/texmf-dist/scripts/pythontex/ is in texlive-extra-utils 2015.20160320-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/texlive/texmf-dist/scripts/pythontex/depythontex.py
/usr/share/texlive/texmf-dist/scripts/pythontex/depythontex2.py
/usr/share/texlive/texmf-dist/scripts/pythontex/depythontex3.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex2.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex3.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex_2to3.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex_engines.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex_install.py
/usr/share/texlive/texmf-dist/scripts/pythontex/pythontex_utils.py