/usr/share/pyshared/ is in python-zope.authentication 3.7.1-3fakesync1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/zope/
/usr/share/pyshared/zope/authentication/
/usr/share/pyshared/zope/authentication/__init__.py
/usr/share/pyshared/zope/authentication/interfaces.py
/usr/share/pyshared/zope/authentication/loginpassword.py
/usr/share/pyshared/zope/authentication/logout.py
/usr/share/pyshared/zope/authentication/principal.py
/usr/share/pyshared/zope/authentication/configure.zcml
/usr/share/pyshared/zope/authentication/logout.txt
/usr/share/pyshared/zope/authentication/principalterms.txt
/usr/share/pyshared/zope/authentication/tests/
/usr/share/pyshared/zope/authentication/tests/__init__.py
/usr/share/pyshared/zope/authentication/tests/test_loginpassword.py
/usr/share/pyshared/zope/authentication/tests/test_logout.py
/usr/share/pyshared/zope/authentication/tests/test_principal.py
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/dependency_links.txt
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/namespace_packages.txt
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/not-zip-safe
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/PKG-INFO
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/requires.txt
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/SOURCES.txt
/usr/share/pyshared/zope.authentication-3.7.1.egg-info/top_level.txt
/usr/share/pyshared/zope.authentication-3.7.1-nspkg.pth