feat(postcodes/TZ): 3,684 NAPA Tanzania codes (#1039)#1506
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Adds Tanzania's 5-digit National Postal Authority (NAPA) postcodes from the Msuluzya/TanzaniaRegions MIT-licensed mirror. Why --- Closes the TZ gap on issue #1039. The previously-tracked meshackjr/Tanzania-Postal-Codes-SQL covered only Dar es Salaam (1 of 31 regions). Msuluzya covers 24 mainland regions with full ward/locality hierarchy. Coverage -------- - 3,684 codes / 100% state FK - 24 of 31 CSC TZ regions covered Source structure ---------------- 4-level nest: Region -> District -> Ward -> places (5-digit codes). Some wards also have streets/villages arrays for representative locality names. State FK strategy ----------------- Direct region-name match + 10-entry SOURCE_TO_CSC_NAME alias map handling Swahili region labels: Kaskazini Pemba -> Pemba North Kusini Pemba -> Pemba South Kaskazini Unguja -> Zanzibar North Kusini Unguja -> Zanzibar South Mjini Magharibi -> Zanzibar West plus English-variant aliases for 'Zanzibar Central/South' -> 'Zanzibar South' and 'Zanzibar Urban/West' -> 'Zanzibar West'. Coverage gaps ------------- - 7 CSC regions absent (no rows): Dar es Salaam + 5 Zanzibar/Pemba island regions (source ships empty `places` arrays for all of them) + Arusha (source's `places` array there contains village names, not postcodes — 1,432 entries skipped at regex check). - The Arusha source-data shape inconsistency is a known upstream quirk; the strict regex check correctly filters out the malformed data without polluting valid rows. License ------- Msuluzya/TanzaniaRegions: MIT. Upstream: Tanzania National Postal Authority (NAPA). Each row: source: "tanzania-napa-via-msuluzya" Validation ---------- - python3 -m py_compile passes - 100% regex match (^\d{5}$) - 100% state_id valid + state.country_id == 218 + state_code agrees - No auto-managed fields (id, created_at, updated_at, flag) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
meshackjr/Tanzania-Postal-Codes-SQL(1/31 regions)Source
Msuluzya/TanzaniaRegions— MIT-licensedjson/tanzania-regions.json(~545 KB)Research-doc correction
The research doc Tier B note for Tanzania read
Only Dar es Salaam (1/31 regions). That was based onmeshackjr/Tanzania-Postal-Codes-SQL. Direct probe of the GitHub ecosystem found Msuluzya's MIT-licensed comprehensive mirror covering 24+ regions.Source structure
4-level nest:
Region → District → Ward → places (5-digit codes). Each ward also carriesstreets/villagesarrays for representative locality names.State FK strategy
Direct region-name match handles 18 of 24 covered regions. 10-entry
SOURCE_TO_CSC_NAMEalias map handles the Swahili island variants:Kaskazini Pemba→Pemba NorthKusini Pemba→Pemba SouthKaskazini Unguja→Zanzibar NorthKusini Unguja→Zanzibar SouthMjini Magharibi→Zanzibar West…plus English-variant aliases for
'Zanzibar Central/South'→'Zanzibar South'and'Zanzibar Urban/West'→'Zanzibar West'.Coverage gaps
placesarrays for all of them).placesarray there contains village names instead of postcodes (1,432 entries). Strict regex check (^\d{5}$) correctly filters them — no malformed data leaks through.Distribution (top 5)
Test plan
python3 -m py_compile bin/scripts/sync/import_tanzania_postcodes.py^\d{5}$id,created_at,updated_at,flag)🤖 Generated with Claude Code