Datasets:
| """Check downloaded data files against DATA_MANIFEST.json before using them. | |
| Usage: python verify_data.py [DATA_DIR] (default: data/)""" | |
| import hashlib, json, os, sys | |
| d = sys.argv[1] if len(sys.argv) > 1 else os.path.join(os.path.dirname(os.path.abspath(__file__)), "data") | |
| m = json.load(open(os.path.join(os.path.dirname(os.path.abspath(__file__)), "DATA_MANIFEST.json"))) | |
| bad = 0 | |
| for name, info in m["files"].items(): | |
| p = os.path.join(d, name) | |
| if not os.path.exists(p): | |
| print(f"MISSING {name}"); bad += 1; continue | |
| h = hashlib.sha256() | |
| with open(p, "rb") as f: | |
| for chunk in iter(lambda: f.read(1 << 20), b""): | |
| h.update(chunk) | |
| ok = h.hexdigest() == info["sha256"] and os.path.getsize(p) == info["bytes"] | |
| bad += not ok | |
| print(f"{'OK ' if ok else 'MISMATCH'} {name}") | |
| print(f"{m['data_version']}: {len(m['files']) - bad}/{len(m['files'])} files verified") | |
| sys.exit(1 if bad else 0) | |