verify_install.py

import importlib

packages = [
    'fastapi',
    'torch',
    'transformers',
]

for p in packages:
    try:
        m = importlib.import_module(p)
        v = getattr(m, '__version__', None)
        print(f"{p}: OK, version={v}")
    except Exception as e:
        print(f"{p}: IMPORT ERROR: {e}")