/usr/share/pyshared/zope/app/exception/ is in python-zope.app.exception 3.6.3-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/zope/app/exception/__init__.py
/usr/share/pyshared/zope/app/exception/browser/
/usr/share/pyshared/zope/app/exception/browser/__init__.py
/usr/share/pyshared/zope/app/exception/browser/configure.zcml
/usr/share/pyshared/zope/app/exception/browser/notfound.pt
/usr/share/pyshared/zope/app/exception/browser/notfound.py
/usr/share/pyshared/zope/app/exception/browser/systemerror.pt
/usr/share/pyshared/zope/app/exception/browser/systemerror.txt
/usr/share/pyshared/zope/app/exception/browser/tests/
/usr/share/pyshared/zope/app/exception/browser/tests/__init__.py
/usr/share/pyshared/zope/app/exception/browser/tests/test_error.py
/usr/share/pyshared/zope/app/exception/browser/tests/test_unauthorized.py
/usr/share/pyshared/zope/app/exception/browser/unauthorized.pt
/usr/share/pyshared/zope/app/exception/browser/unauthorized.py
/usr/share/pyshared/zope/app/exception/browser/user.pt
/usr/share/pyshared/zope/app/exception/browser/user.py
/usr/share/pyshared/zope/app/exception/ftesting.zcml
/usr/share/pyshared/zope/app/exception/interfaces.py
/usr/share/pyshared/zope/app/exception/systemerror.py
/usr/share/pyshared/zope/app/exception/testing.py