hwbench: Ensure no one is running below the minimal python version

Even if the setup requires a minimal python version, this doesn't
prevent users from running a different python release at runtime.

This commit is about preventing hwbench to run on unsupported python
releases.

Signed-off-by: Erwan Velu <e.velu@criteo.com>

hwbench/hwbench.py

@@ -5,13 +5,15 @@
 import json
 import os
 import pathlib
+import platform
 import time
 
 from .bench import benchmarks
 from .bench.monitoring_structs import MonitorMetric
 from .config import config
 from .environment import software as env_soft
 from .environment import hardware as env_hw
+from packaging.version import Version
 from .utils import helpers as h
 from .tuning import setup as tuning_setup
 from .utils.hwlogging import init_logging
@@ -21,6 +23,13 @@ def main():
     if not is_root():
         h.fatal("hwbench is not running as effective uid 0.")
 
+    # Let's ensure no one is running below the expected python release
+    min_python_release = "3.9"
+    if Version(platform.python_version()) < Version(min_python_release):
+        h.fatal(
+            f"Current python version {platform.python_version()} is below minimal supported release : {min_python_release}"
+        )
+
     out_dir, tuning_out_dir = create_output_directory()
     args = parse_options()