Since this is only an example file, no xenrt test.
This file is not installed on dom0, should do no harm.
pylint and pytype check passed
Manually tested the main logic works in python3:
Python 3.11.0 (main, Jun 21 2024, 03:47:37) [GCC 13.3.1 20240522 (Red Hat 13.3.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> cmd = "free -k | grep Mem | awk '{print $2, $3, $4}'"
>>> import os
>>> vs = os.popen(cmd).read().strip().split()
>>> vs
['16336416', '4351784', '1958616']
Since this is only an example file, no xenrt test. This file is not installed on dom0, should do no harm.