prerm is in python3-oslo.policy 1.33.1-0ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #!/bin/sh
set -e
if [ "$1" = "remove" ] ; then
	update-alternatives --remove oslopolicy-sample-generator /usr/bin/python3-oslopolicy-sample-generator
	update-alternatives --remove oslopolicy-checker /usr/bin/python3-oslopolicy-checker
	update-alternatives --remove oslopolicy-policy-generator /usr/bin/python3-oslopolicy-policy-generator
	update-alternatives --remove oslopolicy-list-redundant /usr/bin/python3-oslopolicy-list-redundant
fi
# Automatically added by dh_python3:
if which py3clean >/dev/null 2>&1; then
	py3clean -p python3-oslo.policy 
else
	dpkg -L python3-oslo.policy | perl -ne 's,/([^/]*)\.py$,/__pycache__/\1.*, or next; unlink $_ or die $! foreach glob($_)'
	find /usr/lib/python3/dist-packages/ -type d -name __pycache__ -empty -print0 | xargs --null --no-run-if-empty rmdir
fi
# End automatically added section
exit 0
 |