Published

Sweden (SE) build pipeline

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Postal Codes Dataset for Sweden, SE including name of the city, town, or place, various administrative divisions and alternative city names.

Sweden (SE) build pipeline

Single-source GeoNames SE rebuild, with a dedicated provenance-diff step (diff_provenance.py) that compares the current live GeoNames export against the originally-scraped set to distinguish "upstream grew" from "something's wrong" — run it whenever the rebuilt row count doesn't match R2 exactly, before assuming a bug.

Run order

python3 fetch_source.py        # GeoNames SE.txt
python3 build_base.py
python3 diff_provenance.py     # compares against the original scrape, explains any drift
python3 integrity_checker.py
python3 package.py
python3 publish_r2.py          # written this session — did not exist before. dry run by default.

Sources

  • GeoNames SE postal export — CC BY 4.0

Verification (2026-08-19)

Reproducible, integrity check PASS (0 duplicates). Not byte-identical — 18,887 rows rebuilt vs 18,858 live on R2, but this is a confirmed, benign upstream-growth gap, not an error:

diff_provenance.py shows 29 postal codes exist only in the current GeoNames export (added upstream since the original scrape); 0 rows exist only in the live scrape — i.e. the rebuild is a strict superset. The 18,858 rows both sides share agree on every field 99.89%+ of the time, confirming genuine common provenance rather than a different source entirely. Safe to treat the +29 as upstream freshness, not a defect — but document the new row count if publishing.