/usr/share/pyshared/ is in python-zope.app.principalannotation 3.7.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/zope/
/usr/share/pyshared/zope.app.principalannotation-3.7.1-nspkg.pth
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/PKG-INFO
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/SOURCES.txt
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/dependency_links.txt
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/namespace_packages.txt
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/not-zip-safe
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/requires.txt
/usr/share/pyshared/zope.app.principalannotation-3.7.1.egg-info/top_level.txt
/usr/share/pyshared/zope/app/
/usr/share/pyshared/zope/app/principalannotation/
/usr/share/pyshared/zope/app/principalannotation/__init__.py
/usr/share/pyshared/zope/app/principalannotation/bootstrap.py
/usr/share/pyshared/zope/app/principalannotation/bootstrap.zcml
/usr/share/pyshared/zope/app/principalannotation/browser.zcml
/usr/share/pyshared/zope/app/principalannotation/configure.zcml
/usr/share/pyshared/zope/app/principalannotation/interfaces.py
/usr/share/pyshared/zope/app/principalannotation/tests.py