wh40kdc
The 40kdc Warhammer 40K dataset behind a linked, typed API — find units, follow
them to their weapons, abilities, phases, and factions. The Python counterpart
to @alpaca-software/40kdc-data
(npm) and wh40kdc (crates.io), held in
behavioral lockstep with both by the shared conformance corpus in the
40kdc-data repository.
pip install wh40kdc
from wh40kdc import Dataset
ds = Dataset.embedded()
unit = ds.units.find("Khârn the Betrayer")
for weapon in unit.weapons:
print(weapon.name)
What ships:
- Linked dataset API —
Datasetwith id/name lookups (diacritic- and punctuation-insensitive), reverse indexes, and join queries across units, weapons, abilities, phases, and factions. - Importers — ListForge, NewRecruit (JSON / WTC-compact / WTC-full /
simple), GW app export, and Rosterizer, all resolving to one
Rostershape. - Exporters — the same roster formats back out, byte-identical to the TypeScript and Rust implementations.
- Cruncher — the damage-projection engine (attacks → hits → wounds → unsaved → damage → after-FNP → models-killed) with buff resolution and per-buff attribution.
- Scoring, terrain, translation — secondary-mission scoring, terrain layout resolution and keystone measurements, and the ability-DSL / scoring-card describers.
- Validator —
validate(target, value)against the canonical JSON Schemas, emitting the closed error-code enum shared by all implementations.
The conformance runner (used by the cross-implementation parity differ) is
invoked as python -m wh40kdc.runner — see conformance/RUNNER_PROTOCOL.md
in the repository.
Development
cd python
uv venv && uv pip install -e ".[dev]"
pytest # includes the conformance suite when run inside the repo
ruff check .
mypy src
Generated artifacts (_bundle.json, _spec.py, _types.py,
src/wh40kdc/schemas/) are produced by the scripts in codegen/ and checked
for drift in CI — regenerate with:
python3 codegen/sync_bundle.py && python3 codegen/sync_spec.py && python3 codegen/gen_typeddicts.py
License
MIT. The schema content the dataset describes is CC0; enrichment data is CC BY 4.0 — see the repository's licensing table.
1 maintainer
Metadata
1 maintainer
Release files for wh40kdc 1.4.4
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