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FEAT add pandas support - #552
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adrinjalali wants to merge 12 commits into
Open
adrinjalali wants to merge 12 commits into
adrinjalali wants to merge 12 commits into
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Copilot review overview
🟡 Changes recommended
Dtype reconstruction can invoke untrusted extension code, and some pandas state is not preserved correctly.
Review effort: Balanced
Findings: 1
Open (6)
What changed in this PR
Adds pandas persistence support to skops.io, including support for estimators such as TargetEncoder.
Changes:
- Adds pandas serializers, loaders, and trusted types.
- Adds round-trip, cross-version, and integration tests.
- Updates pandas dependencies and documentation.
| File | Description |
|---|---|
skops/io/_pandas.py |
Implements pandas persistence nodes. |
skops/io/_persist.py |
Registers pandas handlers lazily. |
skops/io/_trusted_types.py |
Trusts supported pandas types. |
skops/io/tests/test_pandas.py |
Adds pandas persistence tests. |
skops/io/tests/data/pandas-2.0.3.skops |
Adds pandas 2 compatibility fixture. |
skops/io/tests/data/pandas-3.0.3.skops |
Adds pandas 3 compatibility fixture. |
pyproject.toml |
Configures pandas test versions. |
pixi.lock |
Updates resolved dependencies. |
docs/requirements.txt |
Raises the pandas documentation minimum. |
docs/persistence.rst |
Documents pandas support. |
docs/changes.rst |
Adds the release note. |
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| def extension_dtype_get_state(obj: Any, save_context: SaveContext) -> dict[str, Any]: | ||
| # Extension dtypes are rebuilt from their string form, e.g. "Int64", | ||
| # "datetime64[ns, UTC]" or "period[M]". | ||
| content = {"name": str(obj)} |
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| content = {"subtype": str(obj.subtype), "fill_value": obj.fill_value} | ||
| return _pandas_state(obj, "PandasSparseDtypeNode", content, save_context) |
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This adds pandas support. Since the CI is testing enough versions after pandas v2, I'm confident this wouldn't give us too many headaches.
Fixes #450