/usr/lib/python2.7/dist-packages/trytond/modules/account_product/locale/fr_FR.po is in tryton-modules-account-product 2.2.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/trytond/modules/account_product/locale/../../../../../../../share/pyshared/trytond/modules/account_product/locale/fr_FR.po