/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/ is in tryton-modules-calendar-scheduling 2.2.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/bg_BG.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/cs_CZ.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/de_DE.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/es_CO.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/es_ES.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/fr_FR.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/nl_NL.po
/usr/lib/python2.7/dist-packages/trytond/modules/calendar_scheduling/locale/ru_RU.po