/usr/lib/python2.7/dist-packages/tryton/common/ is in tryton-client 4.2.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/tryton/common/__init__.py
/usr/lib/python2.7/dist-packages/tryton/common/button.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrendererbinary.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrendererbutton.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrendererclickablepixbuf.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrenderercombo.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrendererfloat.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrendererinteger.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrenderertext.py
/usr/lib/python2.7/dist-packages/tryton/common/cellrenderertoggle.py
/usr/lib/python2.7/dist-packages/tryton/common/common.py
/usr/lib/python2.7/dist-packages/tryton/common/completion.py
/usr/lib/python2.7/dist-packages/tryton/common/datetime_.py
/usr/lib/python2.7/dist-packages/tryton/common/datetime_strftime.py
/usr/lib/python2.7/dist-packages/tryton/common/domain_inversion.py
/usr/lib/python2.7/dist-packages/tryton/common/domain_parser.py
/usr/lib/python2.7/dist-packages/tryton/common/entry_position.py
/usr/lib/python2.7/dist-packages/tryton/common/environment.py
/usr/lib/python2.7/dist-packages/tryton/common/focus.py
/usr/lib/python2.7/dist-packages/tryton/common/htmltextbuffer.py
/usr/lib/python2.7/dist-packages/tryton/common/placeholder_entry.py
/usr/lib/python2.7/dist-packages/tryton/common/popup_menu.py
/usr/lib/python2.7/dist-packages/tryton/common/selection.py
/usr/lib/python2.7/dist-packages/tryton/common/timedelta.py
/usr/lib/python2.7/dist-packages/tryton/common/treeviewcontrol.py
/usr/lib/python2.7/dist-packages/tryton/common/widget_style.py