feat: add download_cpa reader for Country Programmable Aid#40
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Adds download_cpa() sourcing OECD CPA (DSD_CPA@DF_CRS_CPA) from the SDMX
API, reusing the CRS filter, schema, and translation (via a cpa->crs
alias in read_schema_translation). Defaults to project-level microdata
(MD_DIM=DD). get_available_filters("cpa") is supported.
Per-year bulk (download_cpa_file) is intentionally omitted: the OECD bulk
.txt files are malformed upstream (32-69% of rows in 2020-2023 are
structurally invalid), tracked in #39 to add once OECD fixes them.
Co-authored-by: Claude <noreply@anthropic.com>
8 tasks
Add a Country Programmable Aid section to the docs site (datasets, filtering, advanced) and update dataset counts/enumerations. Remove the per-year bulk caveat from the README CPA section. Co-authored-by: Claude <noreply@anthropic.com>
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What
Adds
download_cpa()— an API reader for OECD Country Programmable Aid (DSD_CPA@DF_CRS_CPA).It's a near-clone of the CRS reader: it reuses
build_crs_filter,convert_crs_to_dotstat_codes,and the CRS
.statschema (via a one-linecpa→crsalias inread_schema_translation), defaultsto project-level microdata (
MD_DIM=DD, confirmed against the live API), and is discoverable viaget_available_filters("cpa").Closes #38.
Why API-only (no
download_cpa_file)The OECD per-year bulk
.txtfiles for CPA are malformed upstream: 32–69% of rows in 2020–2023carry more pipe-delimited fields than the 49-column header (structurally invalid — the API confirms
the source text has zero embedded delimiters; 2015 is clean, so it's a regression). They can't be
parsed losslessly, so per-year bulk is deferred to #39 and has been reported to the OECD. For a full
year, use
download_cpa(start_year=y, end_year=y).Changes
src/oda_reader/cpa.py(new) —download_cpa()download_tools.py—"cpa"dispatch entry (reuses CRS filter + converter)schemas/schema_tools.py—cpa→crsschema alias__init__.py— exportdownload_cpatools.py—get_available_filters("cpa")tests/datasets/cpa/— 4 unit + 2 integration testsREADME.md,CHANGELOG.md— CPA docsTesting
uv run pytest -q→ 193 passed, 8 deselected (integration excluded by default).converter-wiring (
version_functions["cpa"]usesconvert_crs_to_dotstat_codes).mdformatclean.Co-authored-by: Claude noreply@anthropic.com