/usr/share/pyshared/Mailnag/ is in mailnag 0.5.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/Mailnag/__init__.py
/usr/share/pyshared/Mailnag/common/
/usr/share/pyshared/Mailnag/common/__init__.py
/usr/share/pyshared/Mailnag/common/account.py
/usr/share/pyshared/Mailnag/common/accountlist.py
/usr/share/pyshared/Mailnag/common/config.py
/usr/share/pyshared/Mailnag/common/dist_cfg.py
/usr/share/pyshared/Mailnag/common/i18n.py
/usr/share/pyshared/Mailnag/common/keyring.py
/usr/share/pyshared/Mailnag/common/utils.py
/usr/share/pyshared/Mailnag/config.py
/usr/share/pyshared/Mailnag/configuration/
/usr/share/pyshared/Mailnag/configuration/__init__.py
/usr/share/pyshared/Mailnag/configuration/accountdialog.py
/usr/share/pyshared/Mailnag/configuration/configwindow.py
/usr/share/pyshared/Mailnag/daemon/
/usr/share/pyshared/Mailnag/daemon/__init__.py
/usr/share/pyshared/Mailnag/daemon/idler.py
/usr/share/pyshared/Mailnag/daemon/idlers.py
/usr/share/pyshared/Mailnag/daemon/imaplib2.py
/usr/share/pyshared/Mailnag/daemon/mail.py
/usr/share/pyshared/Mailnag/daemon/mailchecker.py
/usr/share/pyshared/Mailnag/daemon/mails.py
/usr/share/pyshared/Mailnag/daemon/mailsyncer.py
/usr/share/pyshared/Mailnag/daemon/pid.py
/usr/share/pyshared/Mailnag/daemon/reminder.py
/usr/share/pyshared/Mailnag/mailnag.py