/usr/lib/python2.7/dist-packages/trytond/modules/ is in tryton-modules-account-be 4.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/__init__.py
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/account.py
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/account_be_fr.xml
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/account_be_nl.xml
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tax_be_fr.xml
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tax_be_nl.xml
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tests/
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tests/__init__.py
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tests/test_account_be.py
/usr/lib/python2.7/dist-packages/trytond/modules/account_be/tryton.cfg