Enh arrow json extension #61103
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Enh arrow json extension #61103
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mroeschke
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Mar 11, 2025
pandas/core/dtypes/dtypes.py
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| elif isinstance(pa_type, pa.ExtensionType): | ||
| return type(self)(pa_type.storage_type).type | ||
| elif isinstance(pa_type, pa.JsonType): | ||
| return str |
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Suggested change
| elif isinstance(pa_type, pa.ExtensionType): | |
| return type(self)(pa_type.storage_type).type | |
| elif isinstance(pa_type, pa.JsonType): | |
| return str | |
| elif isinstance(pa_type, pa.BaseExtensionType): | |
| return type(self)(pa_type.storage_type).type |
mroeschke
reviewed
Mar 11, 2025
doc/source/whatsnew/v3.0.0.rst
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| @@ -65,6 +65,7 @@ Other enhancements | |||
| - :class:`Rolling` and :class:`Expanding` now support ``nunique`` (:issue:`26958`) | |||
| - :class:`Rolling` and :class:`Expanding` now support aggregations ``first`` and ``last`` (:issue:`33155`) | |||
| - :func:`read_parquet` accepts ``to_pandas_kwargs`` which are forwarded to :meth:`pyarrow.Table.to_pandas` which enables passing additional keywords to customize the conversion to pandas, such as ``maps_as_pydicts`` to read the Parquet map data type as python dictionaries (:issue:`56842`) | |||
| - :meth: ``ArrowDtype.type`` now supports the pyarrow json data type (:issue:`60958`) | |||
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Suggested change
| - :meth: ``ArrowDtype.type`` now supports the pyarrow json data type (:issue:`60958`) | |
| - :class:`ArrowDtype` now supports ``pyarrowJsonType`` (:issue:`60958`) |
mroeschke
reviewed
Mar 12, 2025
doc/source/whatsnew/v3.0.0.rst
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| @@ -61,6 +61,7 @@ Other enhancements | |||
| - :meth:`Series.cummin` and :meth:`Series.cummax` now supports :class:`CategoricalDtype` (:issue:`52335`) | |||
| - :meth:`Series.plot` now correctly handle the ``ylabel`` parameter for pie charts, allowing for explicit control over the y-axis label (:issue:`58239`) | |||
| - :meth:`DataFrame.plot.scatter` argument ``c`` now accepts a column of strings, where rows with the same string are colored identically (:issue:`16827` and :issue:`16485`) | |||
| - :class:`ArrowDtype` now supports ``pyarrowJsonType`` (:issue:`60958`) | |||
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Suggested change
| - :class:`ArrowDtype` now supports ``pyarrowJsonType`` (:issue:`60958`) | |
| - :class:`ArrowDtype` now supports ``pyarrow.JsonType`` (:issue:`60958`) |
mroeschke
reviewed
Mar 12, 2025
| @@ -3553,3 +3553,10 @@ def test_categorical_from_arrow_dictionary(): | |||
| dtype="int64", | |||
| ) | |||
| tm.assert_series_equal(result, expected) | |||
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| def test_arrow_json_type(): | |||
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You'll need to @pytest.mark.skipif(pa_version_under19p0, reason=...) as pa.json_ is new as of Pyarrow 19
Added support for PyArrow's JSON extension type in ArrowDtype.type by mapping JsonType to str. Fixes pandas-dev#60958.
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Improved extension type handling by using BaseExtensionType for consistent storage type resolution across all PyArrow extension types, including JSON. Fixes pandas-dev#60958
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mroeschke
approved these changes
Mar 12, 2025
|
Thanks @asharmalik19 |
|
Thanks @mroeschke for such quick feedback |
|
Thank you so much for your help, @asharmalik19 and @mroeschke ! |
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pa.json_in arrow extension type #60958doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.