Fix: unbuffered stdout compat with Python 3.11

scripts/hf_job_selfdistill_train.py

@@ -60,8 +60,9 @@ GEN_BATCH = int(os.environ.get("GEN_BATCH", "8"))
 GEN_MAX_TOKENS = int(os.environ.get("GEN_MAX_TOKENS", "2048"))
 
 import sys as _sys
+import os as _os
 # Force unbuffered output so HF job logs stream in real-time
-if not _sys.flags.unbuffered:
+if _os.environ.get("PYTHONUNBUFFERED") or True:
     import io
     _sys.stdout = io.TextIOWrapper(open(_sys.stdout.fileno(), 'wb', 0), write_through=True)
     _sys.stderr = io.TextIOWrapper(open(_sys.stderr.fileno(), 'wb', 0), write_through=True)