I'm not sure about this specific use case, but a reason for using cgroupv2 over rlimit is that cgroup allows you to limit the resources of a _group_ of processe

I'm not sure about this specific use case, but a reason for using cgroupv2 over rlimit is that cgroup allows you to limit the resources of a _group_ of processes, which is handy if, say, your Python script uses the `subprocess` module.