/usr/share/man/man1/pysnmpwalk.1.gz is in python-pysnmp4-apps 0.2.6a-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/pysnmpcmd.1.gz
/usr/share/man/man1/pysnmpcmd.1.gz