verify_cloudpickle_dill_load.py

from pathlib import Path
import cloudpickle
import dill

ROOT = Path(__file__).resolve().parent
LOGS = ROOT / "logs"
LOGS.mkdir(parents=True, exist_ok=True)

marker = LOGS / "serialization_canary_loaded.txt"

cases = [
    ("cloudpickle", cloudpickle.load, ROOT / "canary_cloudpickle.pkl"),
    ("dill", dill.load, ROOT / "canary_dill.pkl"),
]

for name, loader, path in cases:
    marker.unlink(missing_ok=True)

    print(f"===== CONTROLLED LOAD: {name} =====")
    print(f"file={path}")
    print(f"exists_before={marker.exists()}")

    with path.open("rb") as f:
        loader(f)

    print(f"exists_after={marker.exists()}")
    if marker.exists():
        print(f"marker_content={marker.read_text().strip()}")
    print()