/usr/lib/python3/dist-packages/trytond/model/fields/ is in tryton-server 4.6.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/trytond/model/fields/__init__.py
/usr/lib/python3/dist-packages/trytond/model/fields/binary.py
/usr/lib/python3/dist-packages/trytond/model/fields/boolean.py
/usr/lib/python3/dist-packages/trytond/model/fields/char.py
/usr/lib/python3/dist-packages/trytond/model/fields/date.py
/usr/lib/python3/dist-packages/trytond/model/fields/dict.py
/usr/lib/python3/dist-packages/trytond/model/fields/field.py
/usr/lib/python3/dist-packages/trytond/model/fields/float.py
/usr/lib/python3/dist-packages/trytond/model/fields/function.py
/usr/lib/python3/dist-packages/trytond/model/fields/integer.py
/usr/lib/python3/dist-packages/trytond/model/fields/many2many.py
/usr/lib/python3/dist-packages/trytond/model/fields/many2one.py
/usr/lib/python3/dist-packages/trytond/model/fields/numeric.py
/usr/lib/python3/dist-packages/trytond/model/fields/one2many.py
/usr/lib/python3/dist-packages/trytond/model/fields/one2one.py
/usr/lib/python3/dist-packages/trytond/model/fields/reference.py
/usr/lib/python3/dist-packages/trytond/model/fields/selection.py
/usr/lib/python3/dist-packages/trytond/model/fields/text.py