feat(postcodes/LU): 4,491 Luxembourg CACLR codes (#1039)#1488
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Adds the official Luxembourg postcode dataset from CACLR (Centre des Adresses du Cadastre du Luxembourg) via data.public.lu, CC-Zero. Why --- Closes the LU gap on issue #1039. The CACLR registry is the canonical reference for Luxembourgish addresses, published by the LU government under public-domain CC-Zero. Coverage -------- - 4,491 unique (code, locality, canton) tuples / 100% state FK - All 12 CSC cantons covered Source pipeline --------------- 1. data.public.lu API resolves the latest caclr.xlsx URL (URL is date-stamped and rotates every refresh) 2. Importer parses the denormalised TR.DiCaCoLo.RuCp join sheet directly via openpyxl 3. SOURCE_TO_ISO2 maps 13 source canton labels to 12 CSC iso2 ('LUXEMBOURG-VILLE' capital sub-classification collapses to L) 4. 118 '?' postcodes (newly named streets without assigned codes) are filtered out License ------- CC-Zero (public domain). Each row carries `source: "caclr-data-public-lu"` for export-time provenance. Validation ---------- - python3 -m py_compile passes - 100% regex match (^(?:L-)?\d{4}$) - 100% state_id valid + state.country_id == 127 + state_code agrees - No auto-managed fields (id, created_at, updated_at, flag) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Source
caclr.xlsx, sheetTR.DiCaCoLo.RuCp(denormalised join with district/canton/commune/locality/street/postcode)Why this source (not OpenPLZ or population CSV)
rnpp-code-postal.csvships only postcode+population — no canton or locality FKcaclr.xlsxcarries the full join chain required for state FKState FK strategy
13 source canton labels collapse to 12 CSC iso2 codes via
SOURCE_TO_ISO2. The only sub-classification handled isLUXEMBOURG-VILLE(the capital city, which is its own administrative entity but sits inside canton Luxembourg) → CSCL.118 records with
?postcode (newly-named streets without assigned codes) are filtered before regex check.Distribution
Test plan
python3 -m py_compile bin/scripts/sync/import_luxembourg_postcodes.py^(?:L-)?\d{4}$id,created_at,updated_at,flag)🤖 Generated with Claude Code