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ARROW-255: Finalize Dictionary representation #119

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@julienledem julienledem commented Aug 15, 2016

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emkornfield
emkornfield reviewed Aug 16, 2016
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format/Layout.md Outdated
## Dictionary encoding

When a field is dictionary encoded, the values are represented by an array of Int32 representing the index of the value in the dictionary.
The Dictionary is received as a DIctionaryBacth whose id is referenced byt the dictionary field in the Field.
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@emkornfield emkornfield Aug 16, 2016

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typoe DIctionary and "byt". "field in the Field" is a little bit confusing. It my pay to more explicitly define the terms (or maybe just rephrase to mention metadata").

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@wesm wesm Aug 16, 2016

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Example will definitely help to illustrate. Notably in an IPC / RPC setting when you encounter a dictionary-encoded field you can "move on" because the data at that level of the hierarchy is integers referencing a dictionary that you presumably will have received in a separate message

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@julienledem julienledem Aug 16, 2016

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will fix typos.
regarding IPC/RPC: I'd say that reference to a dictionary in a Schema message means that a DictionaryBatch message will be sent with this id before any RecordBatch message is sent.

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julienledem commented Aug 20, 2016

@wesm @emkornfield updated

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wesm commented Aug 20, 2016

lgtm

emkornfield
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format/Layout.md Outdated
When a field is dictionary encoded, the values are represented by an array of Int32 representing the index of the value in the dictionary.
The Dictionary is received as a DictionaryBacth whose id is referenced by a dictionary attribute defined in the metadata (Message.fbs) in the Field table.
The dictionary has the same layout as the type of the field would dictate. Each entry in the dictionary can be accessed by its index in the DictionaryBatch.
When a Schema references a Dictionary id, it must dend a DictionaryBatch for this id before any RecordBatch.
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typo "dend" -> "send"

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emkornfield commented Aug 20, 2016

Some CPP lint failure and 1 typo. otherwise LGTM.

@asfgit asfgit closed this in 8960a2e Aug 20, 2016
@julienledem julienledem deleted the arrow_255_dictionary branch August 31, 2016 21:44
wesm pushed a commit to wesm/arrow that referenced this pull request Sep 8, 2018
@xhochy @wesm
PARQUET-633: Add version to WriterProperties
b1a816d 
Yet only exposing the property publicly so I can make use of it in Arrow.

Also used the interface design from parquet-mr to make the `WriterProperties` immutable so we can safely pass references of them around once they have been passed to a `ParquetFileWriter`.

Author: Uwe L. Korn <uwelk@xhochy.com>

Closes apache#119 from xhochy/parquet-633 and squashes the following commits:

d86436a [Uwe L. Korn] Make Writerproperties references const
2803aca [Uwe L. Korn] PARQUET-633: Add version to WriterProperties

Change-Id: I4634b846899993e9b126887cb32d95b572ac9153
zhouyuan pushed a commit to zhouyuan/arrow that referenced this pull request Jul 5, 2022
@jackylee-ch
ARROW-16566: [Java] Initialize JNI components on use instead of stati…
71a6072 
…cally (apache#13146) (apache#119)

We are using Arrow in Spark. When speculation is turned on, it is possible for the task to be forcibly killed during the running process. It means, `JniLoader.get().ensureLoaded()` maybe failed with `ClosedByInterruptException` when the task was killed, and it should be accepted with this.
However, `NativeMemoryPool` use it as a static code, this leads to an init failure every time the NativeMemroyPool is trying to initialized and can never succeed. It would always fail to init `NativeMemoryPool` with `java.lang.NoClassDefFoundError: Could not initialize class org.apache.arrow.dataset.jni.NativeMemoryPool`.

Lead-authored-by: jackylee-ch <lijunqing@baidu.com>
Co-authored-by: stczwd <qcsd2011@163.com>
Signed-off-by: David Li <li.davidm96@gmail.com>
paddyroddy pushed a commit to rok/arrow that referenced this pull request Jul 19, 2025
@mariusvniekerk
add list[str] overload to rename_columns (apache#119)
b777567
rok added a commit to rok/arrow that referenced this pull request Jul 24, 2025
@paddyroddy @zen-xu
@TallJimbo @tekumara @pre-commit-ci @eltoder @fvankrieken @Flamefork @MTHSBGN @dylanscott @deanm0000 @hmoravec @mariusvniekerk @jonded94 @fabiob @ben-freist @kahojyun @pimdh @dangotbanned @tcrasset @tmct @rok
apacheGH-32609: [Python] Add typing to arrow using stubs (#3)
c15a246 
* Initial commit

* init project

* complete most of the annotations

* fix FixedSizeBufferWriter init annotation

* bump 10.0.1.2

* complete parquet core annotations

* bump 10.0.1.3

* re-export modules

* fix: add return type for foreign_buffer

* fix output_stream and read_message annotations

* ci: add release job

* pre-commit specify flake8 version to 5.0.4

* flake8 ignore F821 for private files

* optimize annotations

* bump 10.0.1.4

* if param supports IOBase, it should also support NativeFile

* bump 10.0.1.5

* pre-commit adds mypy lint

* bump 10.0.1.6

* fix ci name

* Remove version restrictions for Python.

* release 10.0.1.7

* update poetry ci

* Fix stubs for Table factory methods

The main problem was that these were annotated as instance methods rather than static/class methods, but I've added some detail, too.

* update pre-commit

* update

* fix: make fs.FileSystem.from_uri and hdfs.HadoopFileSystem.from_uri as classmethod

* fix: fix read_metadata and read_schema wrong annotations (#11)

* fix: typo S3FileSystem schema -> scheme (#12)

* bump version 10.0.1.8 (#13)

* . (#16)

* make DataType hashable (#22)

* pa.table support recordbatch (#20)

* RecordBatchStreamReader supports next (#18)

* add RecordBatch.to_pylist (#23)

* precise return types for to_pandas (#25)

* bump version 10.0.1.9 (#26)

* [pre-commit.ci] pre-commit autoupdate (#27)

* [pre-commit.ci] pre-commit autoupdate (#28)

* Fix types in FlightDescriptor class (#29)

* Fix types in FlightDescriptor class

* Add argument types

* chore: update pre-commit config (#30)

* build: use `pixi` to manage project (#31)

* chore: add taplo config (#32)

* chore: update LICENSE date (#33)

* doc: add CODE_OF_CONDUCT.md (#34)

* [pre-commit.ci] pre-commit autoupdate (#38)

* [pre-commit.ci] pre-commit autoupdate (#39)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.5.7 → v0.6.1](astral-sh/ruff-pre-commit@v0.5.7...v0.6.1)

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* [pre-commit.ci] pre-commit autoupdate (apache#48)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.6.1 → v0.6.2](astral-sh/ruff-pre-commit@v0.6.1...v0.6.2)
- [github.com/pre-commit/mirrors-mypy: v1.11.1 → v1.11.2](pre-commit/mirrors-mypy@v1.11.1...v1.11.2)

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* refactor: rewrite type annotations by hand. (#35)

* chore: restart

* update ruff config

* build: add extra dependencies

* update mypy config

* feat: add util.pyi

* feat: add types.pyi

* feat: impl lib.pyi

* update

* feat: add acero.pyi

* feat: add compute.pyi

* add benchmark.pyi

* add cffi

* feat: add csv.pyi

* disable isort single line

* reformat

* update compute.pyi

* add _auzurefs.pyi

* add _cuda.pyi

* add _dataset.pyi

* rename _stub_typing.pyi -> _stubs_typing.pyi

* add _dataset_orc.pyi

* add pyarrow-stubs/_dataset_parquet_encryption.pyi

* add _dataset_parquet.pyi

* add _feather.pyi

* feat: add _flight.pyi

* add _fs.pyi

* add _gcsfs.pyi

* add _hdfs.pyi

* add _json.pyi

* add _orc.pyi

* add _parquet_encryption.pyi

* add _parquet.pyi

* update

* add _parquet.pyi

* add _s3fs.pyi

* add _substrait.pyi

* update

* update

* add parquet/core.pyi

* add parquet/encryption.pyi

* add BufferProtocol

* impl _filesystemdataset_write

* add dataset.pyi

* add feather.pyi

* add flight.pyi

* add fs.pyi

* add gandiva.pyi

* add json.pyi

* add orc.pyi

* add pandas_compat.pyi

* add substrait.pyi

* update util.pyi

* add interchange

* add __lib_pxi

* update __lib_pxi

* update

* update

* add types.pyi

* feat: add scalar.pyi

* update types.pyi

* update types.pyi

* update scalar.pyi

* update

* update

* update

* update

* update

* update

* feat: impl array

* feat: add builder.pyi

* add scipy

* add tensor.pyi

* feat: impl NativeFile

* update io.pyi

* complete io.pyi

* add ipc.pyi

* mv benchmark.pyi into __lib_pxi

* add table.pyi

* do re-export in lib.pyi

* fix io.pyi

* update

* optimize scalar.pyi

* optimize indices

* complete ipc.pyi

* update

* fix NullableIterable

* fix string array

* ignore overload-overlap error

* fix _Tabular.__getitem__

* remove additional_dependencies

* remove check-mypy.sh (apache#49)

* release 20240828 (apache#50)

* fix release tag (apache#51)

* ci: install hatch by pip (apache#52)

* ci: fix hatch keyring (apache#53)

* ci: use Release environment (apache#54)

* remove Scalar generic type var _IsValid (apache#56)

* remove Scalar generic type var _IsValid

* make Array, Scalar, Types generic type var as covariant type (apache#57)

* remove Field generic type var _Nullable (apache#58)

* remove Field generic type var _Nullable

* fix: pa.dictionary and pa.schema annotation (apache#59)

* fix pa.dictionary annotation

* fix: schema annotation

* release new version (apache#60)

* [pre-commit.ci] pre-commit autoupdate (apache#62)

* release: 2024.9.3 (apache#63)

use new date release format %Y.%m.%d

* support pyarrow compute funcs (apache#61)

* update compute.pyi

* impl Aggregation funcs

* impl arithmetic

* imit bit-wise functions

* imit rounding functions

* optimize annotation

* impl logarithmic functions

* update

* impl comparisons funcs

* impl logical funcs

* impl string predicates and transforms

* impl string padding

* impl string trimming

* impl string splitting and component extraction

* impl string joining and slicing

* impl Containment tests

* impl Categorizations

* impl Structural transforms

* impl Conversions

* impl Temporal component extraction

* impl random, Timezone handling

* impl Array-wise functions

* fix timestamp scalar

* support build array with list of scalar (apache#64)

* release 2024.9.4 (apache#65)

* Version follows the version of pyarrow (apache#66)

* import parquet.core into parquet __init__.py (apache#67)

Update __init__.pyi

* release 17.1 (apache#69)

* fix: add missing submodule benchmark, csv and cuda (apache#71)

* release 17.2 (apache#72)

* fix: from_pylist covariance (apache#73)

* [pre-commit.ci] pre-commit autoupdate (apache#74)

* Fix return type for middleware factory's start_call (apache#75)

It can return None if middleware is not needed for a given call.

* release 17.3 (apache#76)

* fix: add missing return type in FlightDescriptor static methods (apache#80)

* Support Tabular filter with Expression (apache#81)

support Tabular filter with Expression

* Support compute functions to accept Expression as parameter (apache#82)

* fix: Fix the return value of Expression comparison (apache#83)

* release 17.4 (apache#84)

* fix: fix the array return type (apache#89)

* a few type improvements, mostly flight related (apache#90)

* FlightError.extra_info -> bytes

* annotate FlightStreamReader.cancel return

* BasicAuth serialize/deserialize

* RecordBatchFileReader.schema

* actually str | bytes

* add_type_to_Field (apache#87)

* add_type_to_Field

* Field.type should return the covariant DataType

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Support fsspec.AbstractFileSystem (apache#88)

* supported_filesystem

* fixes

* remove unused import

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.5 (apache#91)

* [pre-commit.ci] pre-commit autoupdate (apache#95)

* fix: parquet not accepting NativeFile (apache#98)

* feat: support pa.Buffer buffer protocol (apache#99)

* feat: Support `compute` functions to accept ChunkedArray. (apache#100)

* release 17.6 (apache#101)

* [pre-commit.ci] pre-commit autoupdate (apache#102)

* working towards making return signatures only have one type (mean and exp) (apache#105)

* group_by_returns_TableGroupBy

* return_single_type_for_mean_exp

* revert table.pyi

* compute.mean does not support BinaryScalar or BinaryArray

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* a table group_by was returing Self but should return TableGroupBy (apache#104)

group_by_returns_TableGroupBy

* [pre-commit.ci] pre-commit autoupdate (apache#106)

updates:
- [github.com/pre-commit/pre-commit-hooks: v4.6.0 → v5.0.0](pre-commit/pre-commit-hooks@v4.6.0...v5.0.0)
- [github.com/astral-sh/ruff-pre-commit: v0.6.7 → v0.6.9](astral-sh/ruff-pre-commit@v0.6.7...v0.6.9)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: RecordBatch missing `from_arrays` and `from_pandas` (apache#108)

* release 17.7 (apache#109)

* fix_combine_chunks (apache#110)

* make Self backward compatible (apache#115)

* fix: update ConvertOptions (apache#114)

* add type property to Array (apache#112)

* add type property to Array

* Array.type should return covariant

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.8 (apache#117)

* Add include_columns parameter in ConvertOptions (apache#118)

* add list[str] overload to rename_columns (apache#119)

* release 17.9 (apache#120)

* [pre-commit.ci] pre-commit autoupdate (apache#124)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.6.9 → v0.7.0](astral-sh/ruff-pre-commit@v0.6.9...v0.7.0)
- [github.com/pre-commit/mirrors-mypy: v1.11.2 → v1.12.1](pre-commit/mirrors-mypy@v1.11.2...v1.12.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* improve type annotations for parquet writer (apache#125)

Add support for per-field compression specification
Add missing none compression value.

* Add missing return type for Schema.serialize (apache#123)

* Add `Schema.field(int)` (apache#122)

* Change various io related functions to support `StrPath` as a path input (apache#121)

* Change various io related functions to support StrPath as a path input

* fmt

* Added StrPath | IO for feather types

* fix type hint for sort_by (apache#130)

sort_by takes str or list[tuple(name, order)] as its argument where str is a field name not a sort order

* metadata on a schema can be passed as str (apache#128)

For details see https://github.com/apache/arrow/blob/apache-arrow-17.0.0/python/pyarrow/types.pxi\#L2053-L2056

* Correct typevars for DictionaryType, MapType, RunEncodedType (apache#126)

Correct type hints for Dictionary, RunEndEncoded and Map

Signed-off-by: Jonas Dedden <university@jonas-dedden.de>
Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Add some more StrPath io parts that were overlooked. (apache#131)

* Add some more StrPath io parts that were overlooked.

Additionally, add the utility typealias `SingleOrList` that can be used in places where we want a concise type declaration but the there is a large union of types.

* write_dataset(base_dir = ) can also take Path

* Support ChunkedArray in add/append methods in Table (apache#129)

* Add missing partitioning typing case (apache#132)

This should now support the examples in the docstring for partitioning.

* fix: typo 'permissive' instead of 'premissive' (apache#133)

* release 17.10 (apache#134)

* fix incorrect type hints for compute.sort_indices (apache#135)

* disallow passing `names` as an argument to table when using dictionaries (apache#137)

* [pre-commit.ci] pre-commit autoupdate (apache#138)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.0 → v0.7.1](astral-sh/ruff-pre-commit@v0.7.0...v0.7.1)
- [github.com/pre-commit/mirrors-mypy: v1.12.1 → v1.13.0](pre-commit/mirrors-mypy@v1.12.1...v1.13.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Add missing type for FlightEndpoint (apache#136)

* release 17.11 (apache#139)

* [pre-commit.ci] pre-commit autoupdate (apache#140)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.1 → v0.7.2](astral-sh/ruff-pre-commit@v0.7.1...v0.7.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* [pre-commit.ci] pre-commit autoupdate (apache#142)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.2 → v0.7.3](astral-sh/ruff-pre-commit@v0.7.2...v0.7.3)

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* chore: Create FUNDING.yml (apache#143)

Create FUNDING.yml

* fix: `read_schema` should return Schema (apache#145)

fix: read_schema should return Schema

* release 17.12 (apache#146)

* [pre-commit.ci] pre-commit autoupdate (apache#147)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.3 → v0.7.4](astral-sh/ruff-pre-commit@v0.7.3...v0.7.4)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: `to_table` argument `columns` can be a dict of expressions (apache#149)

* [pre-commit.ci] pre-commit autoupdate (apache#148)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.4 → v0.8.1](astral-sh/ruff-pre-commit@v0.7.4...v0.8.1)

* ruff: ignore PYI063

---------

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Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.13 (apache#151)

* fix: FileSystem metadata value should be str (apache#152)

* fix: FileSystemHandler metadata value should be str (apache#153)

* [pre-commit.ci] pre-commit autoupdate (apache#154)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.1 → v0.8.2](astral-sh/ruff-pre-commit@v0.8.1...v0.8.2)

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* improve coverage for pyarrow.struct typehint (apache#157)

* fix: ipc typing (apache#159)

* release 17.14 (apache#160)

* fix: add missing param 'nbytes' to NativeFile.read (apache#163)

* release 17.15 (apache#164)

* [pre-commit.ci] pre-commit autoupdate (apache#161)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.2 → v0.8.3](astral-sh/ruff-pre-commit@v0.8.2...v0.8.3)

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* Add 'None' as a valid argument for partitioning to the various parquet reading functions (apache#166)

* [pre-commit.ci] pre-commit autoupdate (apache#165)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.3 → v0.8.6](astral-sh/ruff-pre-commit@v0.8.3...v0.8.6)
- [github.com/pre-commit/mirrors-mypy: v1.13.0 → v1.14.1](pre-commit/mirrors-mypy@v1.13.0...v1.14.1)

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* fix: should use Collection[Array] instead list[Array] (apache#170)

"List" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
Consider using "Sequence" instead, which is covariant

* fix: update type hints for path_or_paths and source parameters in ParquetDataset and read_table (apache#171)

* [pre-commit.ci] pre-commit autoupdate (apache#167)

updates:
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* release 17.16 (apache#172)

* Fixed pa.fixed_shape_tensor (apache#175)

* [pre-commit.ci] pre-commit autoupdate (apache#173)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.1 → v0.9.4](astral-sh/ruff-pre-commit@v0.9.1...v0.9.4)

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* fix: Preserve generic in `ChunkedArray.type` (apache#177)

* release 17.17 (apache#178)

* [pre-commit.ci] pre-commit autoupdate (apache#176)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.4 → v0.9.6](astral-sh/ruff-pre-commit@v0.9.4...v0.9.6)
- [github.com/pre-commit/mirrors-mypy: v1.14.1 → v1.15.0](pre-commit/mirrors-mypy@v1.14.1...v1.15.0)

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* fix: support to construct ListArray with primitive type (apache#179)

* fix: Avoid `chunked_array` overlapping overloads (apache#183)

* fix: Add placeholder annotations to `pc.if_else` (apache#182)

* fix: Widen `Array` to `Array | ChunkedArray` (apache#181)

* fix: add `pc.fill_null` (apache#185)

- https://arrow.apache.org/docs/python/generated/pyarrow.compute.fill_null.html
- https://github.com/narwhals-dev/narwhals/blob/05e47b27ebe27b24196cee5956d07748d65a62ee/narwhals/_arrow/series.py#L675

* fix: Allow Table.from_arrays to take a list containing a mix of Array and ChunkedArray (apache#187)

Update table.pyi

* release 17.18 (apache#188)

* [pre-commit.ci] pre-commit autoupdate (apache#180)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.6 → v0.9.10](astral-sh/ruff-pre-commit@v0.9.6...v0.9.10)

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* fix: from_arrays for both Table and RecordBatch (apache#189)

* fix: resolve some `pa.compute` overlaps (apache#184)

* fix: resolve overlapping `compute.(add|divide)`

* fix: copy from non-cloned signature

* fix: resolve overlapping `compute.exp`

* fix: resolve overlapping `compute.power`

* fix: resolve overlapping `compute.equal`

* fix: resolve overlapping `compute.and_`

* fix: Include `Array` in `chunked_array` overload (apache#190)

narwhals-dev/narwhals@0237f7a

* release 17.19 (apache#191)

* Add Scalar, Array and Type classes for Json & Uuid (apache#194)

* Add Scalar, Array and Type classes for Json & Uuid

* Formatting fixes

* [pre-commit.ci] pre-commit autoupdate (apache#192)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.10 → v0.11.2](astral-sh/ruff-pre-commit@v0.9.10...v0.11.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Revert "Add Scalar, Array and Type classes for Json & Uuid" (apache#195)

Revert "Add Scalar, Array and Type classes for Json & Uuid (apache#194)"

This reverts commit 8f77909.

* fix: Add missing `pc.equal` overload (apache#196)

* feat: support pyarrow 19.0 (apache#198)

* build: upgrade pyarrow min version to 19.0

* feat: support pyarrow 19.0

* omit mypy bool8 override error

* fix: reexport new types (apache#199)

* feat: override new patterns for func repeat and nulls (apache#200)

* fix: reexport decimal64 array and decimal128 array

* feat: override new patterns for func `repeat` and `nulls`

* release: 19.1 (apache#201)

* fix: Allow `Iterable[Table]` in `concat_tables` (apache#203)

https://arrow.apache.org/docs/python/generated/pyarrow.concat_tables.html

> tables : iterable of pyarrow.Table objects

* fix: Allow `ChunkedArray[BooleanScalar]` in `pc.invert` (apache#204)

Fixes https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L298-L299

* feat: Fully spec `TableGroupBy.aggregate` (apache#197)

## Related
- https://arrow.apache.org/docs/python/compute.html#grouped-aggregations
- https://arrow.apache.org/docs/python/generated/pyarrow.TableGroupBy.html#pyarrow.TableGroupBy.aggregate
- https://github.com/apache/arrow/blob/34a984c842db42b409a1359e6e2cf167a2365a48/python/pyarrow/table.pxi#L6578-L6604

* fix: Add missing return type to `ChunkedArray.filter` (apache#205)

* fix: Add relaxed final overload to logical functions (apache#206)

Covers all of `pc.(and_ | and_kleene | and_not | and_not_kleene | or_ | or_kleene | xor)`

Resolves:
- https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L219-L233
- https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L662

* fix: Allow `ChunkedArray` in `Table.set_column` (apache#211)

Also being more consistent with `ArrayOrChunkedArray[Any]` everywhere

Discovered in
- https://github.com/vega/vega-datasets/blob/343b7101391a81190ba24e1e8d62a381d2fef3bd/scripts/species.py#L798-L799

* chore: Ignore `fsspec` `[import-untyped]` (apache#210)

```py
_fs.pyi:18: error: Skipping analyzing "fsspec": module is installed, but missing library stubs or py.typed marker  [import-untyped]
_fs.pyi:18: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports Found 1 error in 1 file (checked 64 source files)
```

- fsspec/filesystem_spec#625
- fsspec/filesystem_spec#1676

* feat: Convert `types.is_*` into `TypeIs` guards (apache#215)

* chore: Add `types.__all__`

* feat: Convert `types._is_*` into `TypeIs` guards

I've been using this for a little while, but makes more sense to live in the stubs
https://github.com/narwhals-dev/narwhals/blob/16427440e6d74939c403083b52ce3fb0af7d63c7/narwhals/_arrow/utils.py#L44-L67

* fix: Resolve `bit_wise_and` overlaps (apache#214)

Fixes 3 errors:
```py
compute.pyi:608:5 - error: Overload 1 for "bit_wise_and" overlaps overload 4 and returns an incompatible type (reportOverlappingOverload) compute.pyi:608:5 - error: Overload 1 for "bit_wise_and" overlaps overload 5 and returns an incompatible type (reportOverlappingOverload) compute.pyi:620:5 - error: Overload 3 for "bit_wise_and" will never be used because its parameters overlap overload 1 (reportOverlappingOverload)
```

* fix: Resolve `list_*` overlapping overloads (apache#213)

* fix: Resolve `list_value_length` overlaps

* fix: Resolve `list_element` overlaps

* fix: Resolve `list_(flatten|slice|parent_indices)` overlaps

An improvement, but still not that accurate

* fix: Include `VarianceOptions` in `TableGroupBy.aggregate` (apache#212)

- Follow-up to apache#197
- Noticed while writing up (narwhals-dev/narwhals#2385)
  - We already use it for `std`, `var` in https://github.com/narwhals-dev/narwhals/blob/16427440e6d74939c403083b52ce3fb0af7d63c7/narwhals/_arrow/group_by.py#L81-L82

* [pre-commit.ci] pre-commit autoupdate (apache#202)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.2 → v0.11.5](astral-sh/ruff-pre-commit@v0.11.2...v0.11.5)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: Resolve `Scalar.as_py` warnings for `DictionaryType` (apache#207)

> scalar.pyi:75:20 - warning: TypeVar "_AsPyTypeK" appears only once in generic function signature
>     Use "object" instead (reportInvalidTypeVarUse)
> scalar.pyi:85:20 - warning: TypeVar "_AsPyTypeK" appears only once in generic function signature
>     Use "object" instead (reportInvalidTypeVarUse)

Instead just using `int`, which should be all that is possible from:
https://github.com/zen-xu/pyarrow-stubs/blob/02552b81161d19d4aa71d8656b028eefac84612b/pyarrow-stubs/__lib_pxi/types.pyi#L154-L164

https://github.com/zen-xu/pyarrow-stubs/blob/02552b81161d19d4aa71d8656b028eefac84612b/pyarrow-stubs/__lib_pxi/types.pyi#L63-L70

* fix: Add default to `pc.sort_indices` (apache#216)

* fix: Add default to `pc.sort_indices`

Fixes narwhals-dev/narwhals#2390 (comment)

Default is specified in https://arrow.apache.org/docs/python/generated/pyarrow.compute.sort_indices.html

* refactor: Reuse some aliases

* fix: Allow `list_size` with `Field` in `pa.list_` (apache#218)

Closes apache#217

* allow `Table` or `RecordBatch` for dataset (apache#222)

allow source argument pyarrow.dataset.dataset() to be RecordBatch | Table

* refactor: Simplify `types` overloads (apache#219)

* fix: `binary` overlap

* fix: Simplify list constructors, `_Ordered`

* refactor: Use `_Tz` default

* fix: iter ChunkedArray should return scalar value (apache#224)

* release: 19.2 (apache#225)

* fix: Add missing `DictionaryArray` methods/properties (apache#226)

## Docs
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.indices
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary_decode
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary_encode

## Fixes
- https://github.com/narwhals-dev/narwhals/blob/c23e56c56630761f0fbc58b575a1c987e57d58d5/narwhals/_arrow/series.py#L787-L798
- https://github.com/narwhals-dev/narwhals/blob/c23e56c56630761f0fbc58b575a1c987e57d58d5/narwhals/_arrow/series_cat.py#L14-L18

* chore: use pyright as static type checker (apache#227)

* use pyright as static type checker

* make pyright happy

* fix: fix pyright action (apache#229)

fix github ci

* fix: Match runtime behavior of `(Table|RecordBatch).select` (apache#221)

* fix: Match runtime behavior of `(Table|RecordBatch).select`

## Resolves
- https://github.com/MarcoGorelli/narwhals/blob/5b02b592183b8d39e2d32e0aedd6c234bb22d405/narwhals/_arrow/dataframe.py#L305-L307
- https://github.com/MarcoGorelli/narwhals/blob/5b02b592183b8d39e2d32e0aedd6c234bb22d405/narwhals/_arrow/dataframe.py#L285-L294

##Description
Following up on what I thought was a simple stub issue, but we're both *too strict* and *too permissive* in different ways
##Examples
{placeholder}

##Related
- https://github.com/apache/arrow/blob/d2ddee62329eb711572b4d71d6380673d7f7edd1/python/pyarrow/table.pxi#L4367-L4374
- https://github.com/apache/arrow/blob/d2ddee62329eb711572b4d71d6380673d7f7edd1/python/pyarrow/table.pxi#L1721-L1739

* update select

* update select

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* [pre-commit.ci] pre-commit autoupdate (apache#220)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.5 → v0.11.8](astral-sh/ruff-pre-commit@v0.11.5...v0.11.8)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* feat: narrow scalar when type is given (apache#230)

* rename Uint -> UInt

* feat: narrow scalar when type is given

* release 19.3 (apache#231)

* chore: pyright use strict mode (apache#233)

* fix types

* update array.pyi

* update scalar.pyi

* update

* update array

* update array

* optimize chunked_array

* optimizer iterchunks

* update

* update pyproject.toml

* fix: pa.nulls accept type rather than types (apache#234)

* [pre-commit.ci] pre-commit autoupdate (apache#232)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.8 → v0.11.9](astral-sh/ruff-pre-commit@v0.11.8...v0.11.9)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 19.4 (apache#235)

* lint(pyright): disable reportUnknownMemberType (apache#239)

* [pre-commit.ci] pre-commit autoupdate (apache#236)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.9 → v0.11.13](astral-sh/ruff-pre-commit@v0.11.9...v0.11.13)
- [github.com/RobertCraigie/pyright-python: v1.1.400 → v1.1.401](RobertCraigie/pyright-python@v1.1.400...v1.1.401)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* feat: support pyarrow 20.0 (apache#240)

* [pre-commit.ci] pre-commit autoupdate (apache#241)

updates:
- [github.com/RobertCraigie/pyright-python: v1.1.401 → v1.1.402](RobertCraigie/pyright-python@v1.1.401...v1.1.402)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* support docstring (apache#242)

* doc: complete tensor doc

* doc: complete table doc

* doc: complete scalar doc

* doc: complete orc doc

* doc: complete memory doc

* doc: complete lib doc

* doc: complete json doc

* doc: complete hdfs doc

* doc: complete gcsfs doc

* doc: complete fs doc

* doc: complete flight doc

* doc: complete dataset doc

* doc: complete dataset parquet doc

* doc: complete dataset parquet encryption doc

* doc: complete cuda doc

* doc: complete csv doc

* doc: complete azurefs doc

* doc: complete core doc

* doc: complete interchange doc

* doc: complete array doc

* doc: complete builder doc

* doc: complete device doc

* doc: complete io doc

* doc: complete ipc doc

* doc: complete types doc

* mark deprecated apis

* doc: complete _compute doc

* doc: complete compute doc

* doc: update compute doc

* lint code

* release 20.0.0.20250618 (apache#243)

* fix: make ParquetFileFormat constructor args optional (apache#244)

* fix: Field.remove_metadata should return Self (apache#246)

* [pre-commit.ci] pre-commit autoupdate (apache#245)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.13 → v0.12.0](astral-sh/ruff-pre-commit@v0.11.13...v0.12.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 20.0.0.20250627 (apache#247)

* fix: chunked_array with type should be specified (apache#250)

* [pre-commit.ci] pre-commit autoupdate (apache#248)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.12.0 → v0.12.3](astral-sh/ruff-pre-commit@v0.12.0...v0.12.3)
- [github.com/RobertCraigie/pyright-python: v1.1.402 → v1.1.403](RobertCraigie/pyright-python@v1.1.402...v1.1.403)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 20.0.0.20250715 (apache#251)

* fix: The type parameter of array should be covariant (apache#253)

* release 20.0.0.20250716 (apache#254)

* Add py.typed file to signify that the library is typed

See the relevant PEP https://peps.python.org/pep-0561

* Prepare `pyarrow-stubs` for history merging

MINOR: [Python] Prepare `pyarrow-stubs` for history merging

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Add `ty` configuration and suppress error codes

* One line per rule

* Add licence header from original repo for all `.pyi` files

* Revert "Add licence header from original repo for all `.pyi` files"

This reverts commit 1631f39.

* Prepare for licence merging

* Exclude `stubs` from `rat` test

* Add Apache licence clause to `py.typed`

* Reduce list

* Resolve merge conflict

---------

Signed-off-by: Jonas Dedden <university@jonas-dedden.de>
Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>
Co-authored-by: Jim Bosch <talljimbo@gmail.com>
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rok added a commit to rok/arrow that referenced this pull request Jul 24, 2025
@paddyroddy @zen-xu
@TallJimbo @tekumara @pre-commit-ci @eltoder @fvankrieken @Flamefork @MTHSBGN @dylanscott @deanm0000 @hmoravec @mariusvniekerk @jonded94 @fabiob @ben-freist @kahojyun @pimdh @dangotbanned @tcrasset @tmct @rok
apacheGH-32609: [Python] Add typing to arrow using stubs (#3)
7a33cfa 
* Initial commit

* init project

* complete most of the annotations

* fix FixedSizeBufferWriter init annotation

* bump 10.0.1.2

* complete parquet core annotations

* bump 10.0.1.3

* re-export modules

* fix: add return type for foreign_buffer

* fix output_stream and read_message annotations

* ci: add release job

* pre-commit specify flake8 version to 5.0.4

* flake8 ignore F821 for private files

* optimize annotations

* bump 10.0.1.4

* if param supports IOBase, it should also support NativeFile

* bump 10.0.1.5

* pre-commit adds mypy lint

* bump 10.0.1.6

* fix ci name

* Remove version restrictions for Python.

* release 10.0.1.7

* update poetry ci

* Fix stubs for Table factory methods

The main problem was that these were annotated as instance methods rather than static/class methods, but I've added some detail, too.

* update pre-commit

* update

* fix: make fs.FileSystem.from_uri and hdfs.HadoopFileSystem.from_uri as classmethod

* fix: fix read_metadata and read_schema wrong annotations (#11)

* fix: typo S3FileSystem schema -> scheme (#12)

* bump version 10.0.1.8 (#13)

* . (#16)

* make DataType hashable (#22)

* pa.table support recordbatch (#20)

* RecordBatchStreamReader supports next (#18)

* add RecordBatch.to_pylist (#23)

* precise return types for to_pandas (#25)

* bump version 10.0.1.9 (#26)

* [pre-commit.ci] pre-commit autoupdate (#27)

* [pre-commit.ci] pre-commit autoupdate (#28)

* Fix types in FlightDescriptor class (#29)

* Fix types in FlightDescriptor class

* Add argument types

* chore: update pre-commit config (#30)

* build: use `pixi` to manage project (#31)

* chore: add taplo config (#32)

* chore: update LICENSE date (#33)

* doc: add CODE_OF_CONDUCT.md (#34)

* [pre-commit.ci] pre-commit autoupdate (#38)

* [pre-commit.ci] pre-commit autoupdate (#39)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.5.7 → v0.6.1](astral-sh/ruff-pre-commit@v0.5.7...v0.6.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* [pre-commit.ci] pre-commit autoupdate (apache#48)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.6.1 → v0.6.2](astral-sh/ruff-pre-commit@v0.6.1...v0.6.2)
- [github.com/pre-commit/mirrors-mypy: v1.11.1 → v1.11.2](pre-commit/mirrors-mypy@v1.11.1...v1.11.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* refactor: rewrite type annotations by hand. (#35)

* chore: restart

* update ruff config

* build: add extra dependencies

* update mypy config

* feat: add util.pyi

* feat: add types.pyi

* feat: impl lib.pyi

* update

* feat: add acero.pyi

* feat: add compute.pyi

* add benchmark.pyi

* add cffi

* feat: add csv.pyi

* disable isort single line

* reformat

* update compute.pyi

* add _auzurefs.pyi

* add _cuda.pyi

* add _dataset.pyi

* rename _stub_typing.pyi -> _stubs_typing.pyi

* add _dataset_orc.pyi

* add pyarrow-stubs/_dataset_parquet_encryption.pyi

* add _dataset_parquet.pyi

* add _feather.pyi

* feat: add _flight.pyi

* add _fs.pyi

* add _gcsfs.pyi

* add _hdfs.pyi

* add _json.pyi

* add _orc.pyi

* add _parquet_encryption.pyi

* add _parquet.pyi

* update

* add _parquet.pyi

* add _s3fs.pyi

* add _substrait.pyi

* update

* update

* add parquet/core.pyi

* add parquet/encryption.pyi

* add BufferProtocol

* impl _filesystemdataset_write

* add dataset.pyi

* add feather.pyi

* add flight.pyi

* add fs.pyi

* add gandiva.pyi

* add json.pyi

* add orc.pyi

* add pandas_compat.pyi

* add substrait.pyi

* update util.pyi

* add interchange

* add __lib_pxi

* update __lib_pxi

* update

* update

* add types.pyi

* feat: add scalar.pyi

* update types.pyi

* update types.pyi

* update scalar.pyi

* update

* update

* update

* update

* update

* update

* feat: impl array

* feat: add builder.pyi

* add scipy

* add tensor.pyi

* feat: impl NativeFile

* update io.pyi

* complete io.pyi

* add ipc.pyi

* mv benchmark.pyi into __lib_pxi

* add table.pyi

* do re-export in lib.pyi

* fix io.pyi

* update

* optimize scalar.pyi

* optimize indices

* complete ipc.pyi

* update

* fix NullableIterable

* fix string array

* ignore overload-overlap error

* fix _Tabular.__getitem__

* remove additional_dependencies

* remove check-mypy.sh (apache#49)

* release 20240828 (apache#50)

* fix release tag (apache#51)

* ci: install hatch by pip (apache#52)

* ci: fix hatch keyring (apache#53)

* ci: use Release environment (apache#54)

* remove Scalar generic type var _IsValid (apache#56)

* remove Scalar generic type var _IsValid

* make Array, Scalar, Types generic type var as covariant type (apache#57)

* remove Field generic type var _Nullable (apache#58)

* remove Field generic type var _Nullable

* fix: pa.dictionary and pa.schema annotation (apache#59)

* fix pa.dictionary annotation

* fix: schema annotation

* release new version (apache#60)

* [pre-commit.ci] pre-commit autoupdate (apache#62)

* release: 2024.9.3 (apache#63)

use new date release format %Y.%m.%d

* support pyarrow compute funcs (apache#61)

* update compute.pyi

* impl Aggregation funcs

* impl arithmetic

* imit bit-wise functions

* imit rounding functions

* optimize annotation

* impl logarithmic functions

* update

* impl comparisons funcs

* impl logical funcs

* impl string predicates and transforms

* impl string padding

* impl string trimming

* impl string splitting and component extraction

* impl string joining and slicing

* impl Containment tests

* impl Categorizations

* impl Structural transforms

* impl Conversions

* impl Temporal component extraction

* impl random, Timezone handling

* impl Array-wise functions

* fix timestamp scalar

* support build array with list of scalar (apache#64)

* release 2024.9.4 (apache#65)

* Version follows the version of pyarrow (apache#66)

* import parquet.core into parquet __init__.py (apache#67)

Update __init__.pyi

* release 17.1 (apache#69)

* fix: add missing submodule benchmark, csv and cuda (apache#71)

* release 17.2 (apache#72)

* fix: from_pylist covariance (apache#73)

* [pre-commit.ci] pre-commit autoupdate (apache#74)

* Fix return type for middleware factory's start_call (apache#75)

It can return None if middleware is not needed for a given call.

* release 17.3 (apache#76)

* fix: add missing return type in FlightDescriptor static methods (apache#80)

* Support Tabular filter with Expression (apache#81)

support Tabular filter with Expression

* Support compute functions to accept Expression as parameter (apache#82)

* fix: Fix the return value of Expression comparison (apache#83)

* release 17.4 (apache#84)

* fix: fix the array return type (apache#89)

* a few type improvements, mostly flight related (apache#90)

* FlightError.extra_info -> bytes

* annotate FlightStreamReader.cancel return

* BasicAuth serialize/deserialize

* RecordBatchFileReader.schema

* actually str | bytes

* add_type_to_Field (apache#87)

* add_type_to_Field

* Field.type should return the covariant DataType

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Support fsspec.AbstractFileSystem (apache#88)

* supported_filesystem

* fixes

* remove unused import

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.5 (apache#91)

* [pre-commit.ci] pre-commit autoupdate (apache#95)

* fix: parquet not accepting NativeFile (apache#98)

* feat: support pa.Buffer buffer protocol (apache#99)

* feat: Support `compute` functions to accept ChunkedArray. (apache#100)

* release 17.6 (apache#101)

* [pre-commit.ci] pre-commit autoupdate (apache#102)

* working towards making return signatures only have one type (mean and exp) (apache#105)

* group_by_returns_TableGroupBy

* return_single_type_for_mean_exp

* revert table.pyi

* compute.mean does not support BinaryScalar or BinaryArray

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* a table group_by was returing Self but should return TableGroupBy (apache#104)

group_by_returns_TableGroupBy

* [pre-commit.ci] pre-commit autoupdate (apache#106)

updates:
- [github.com/pre-commit/pre-commit-hooks: v4.6.0 → v5.0.0](pre-commit/pre-commit-hooks@v4.6.0...v5.0.0)
- [github.com/astral-sh/ruff-pre-commit: v0.6.7 → v0.6.9](astral-sh/ruff-pre-commit@v0.6.7...v0.6.9)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: RecordBatch missing `from_arrays` and `from_pandas` (apache#108)

* release 17.7 (apache#109)

* fix_combine_chunks (apache#110)

* make Self backward compatible (apache#115)

* fix: update ConvertOptions (apache#114)

* add type property to Array (apache#112)

* add type property to Array

* Array.type should return covariant

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.8 (apache#117)

* Add include_columns parameter in ConvertOptions (apache#118)

* add list[str] overload to rename_columns (apache#119)

* release 17.9 (apache#120)

* [pre-commit.ci] pre-commit autoupdate (apache#124)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.6.9 → v0.7.0](astral-sh/ruff-pre-commit@v0.6.9...v0.7.0)
- [github.com/pre-commit/mirrors-mypy: v1.11.2 → v1.12.1](pre-commit/mirrors-mypy@v1.11.2...v1.12.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* improve type annotations for parquet writer (apache#125)

Add support for per-field compression specification
Add missing none compression value.

* Add missing return type for Schema.serialize (apache#123)

* Add `Schema.field(int)` (apache#122)

* Change various io related functions to support `StrPath` as a path input (apache#121)

* Change various io related functions to support StrPath as a path input

* fmt

* Added StrPath | IO for feather types

* fix type hint for sort_by (apache#130)

sort_by takes str or list[tuple(name, order)] as its argument where str is a field name not a sort order

* metadata on a schema can be passed as str (apache#128)

For details see https://github.com/apache/arrow/blob/apache-arrow-17.0.0/python/pyarrow/types.pxi\#L2053-L2056

* Correct typevars for DictionaryType, MapType, RunEncodedType (apache#126)

Correct type hints for Dictionary, RunEndEncoded and Map

Signed-off-by: Jonas Dedden <university@jonas-dedden.de>
Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Add some more StrPath io parts that were overlooked. (apache#131)

* Add some more StrPath io parts that were overlooked.

Additionally, add the utility typealias `SingleOrList` that can be used in places where we want a concise type declaration but the there is a large union of types.

* write_dataset(base_dir = ) can also take Path

* Support ChunkedArray in add/append methods in Table (apache#129)

* Add missing partitioning typing case (apache#132)

This should now support the examples in the docstring for partitioning.

* fix: typo 'permissive' instead of 'premissive' (apache#133)

* release 17.10 (apache#134)

* fix incorrect type hints for compute.sort_indices (apache#135)

* disallow passing `names` as an argument to table when using dictionaries (apache#137)

* [pre-commit.ci] pre-commit autoupdate (apache#138)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.0 → v0.7.1](astral-sh/ruff-pre-commit@v0.7.0...v0.7.1)
- [github.com/pre-commit/mirrors-mypy: v1.12.1 → v1.13.0](pre-commit/mirrors-mypy@v1.12.1...v1.13.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Add missing type for FlightEndpoint (apache#136)

* release 17.11 (apache#139)

* [pre-commit.ci] pre-commit autoupdate (apache#140)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.1 → v0.7.2](astral-sh/ruff-pre-commit@v0.7.1...v0.7.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* [pre-commit.ci] pre-commit autoupdate (apache#142)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.2 → v0.7.3](astral-sh/ruff-pre-commit@v0.7.2...v0.7.3)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* chore: Create FUNDING.yml (apache#143)

Create FUNDING.yml

* fix: `read_schema` should return Schema (apache#145)

fix: read_schema should return Schema

* release 17.12 (apache#146)

* [pre-commit.ci] pre-commit autoupdate (apache#147)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.3 → v0.7.4](astral-sh/ruff-pre-commit@v0.7.3...v0.7.4)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: `to_table` argument `columns` can be a dict of expressions (apache#149)

* [pre-commit.ci] pre-commit autoupdate (apache#148)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.7.4 → v0.8.1](astral-sh/ruff-pre-commit@v0.7.4...v0.8.1)

* ruff: ignore PYI063

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* release 17.13 (apache#151)

* fix: FileSystem metadata value should be str (apache#152)

* fix: FileSystemHandler metadata value should be str (apache#153)

* [pre-commit.ci] pre-commit autoupdate (apache#154)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.1 → v0.8.2](astral-sh/ruff-pre-commit@v0.8.1...v0.8.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* improve coverage for pyarrow.struct typehint (apache#157)

* fix: ipc typing (apache#159)

* release 17.14 (apache#160)

* fix: add missing param 'nbytes' to NativeFile.read (apache#163)

* release 17.15 (apache#164)

* [pre-commit.ci] pre-commit autoupdate (apache#161)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.2 → v0.8.3](astral-sh/ruff-pre-commit@v0.8.2...v0.8.3)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Add 'None' as a valid argument for partitioning to the various parquet reading functions (apache#166)

* [pre-commit.ci] pre-commit autoupdate (apache#165)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.3 → v0.8.6](astral-sh/ruff-pre-commit@v0.8.3...v0.8.6)
- [github.com/pre-commit/mirrors-mypy: v1.13.0 → v1.14.1](pre-commit/mirrors-mypy@v1.13.0...v1.14.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: should use Collection[Array] instead list[Array] (apache#170)

"List" is invariant -- see https://mypy.readthedocs.io/en/stable/common_issues.html#variance
Consider using "Sequence" instead, which is covariant

* fix: update type hints for path_or_paths and source parameters in ParquetDataset and read_table (apache#171)

* [pre-commit.ci] pre-commit autoupdate (apache#167)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.6 → v0.9.1](astral-sh/ruff-pre-commit@v0.8.6...v0.9.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 17.16 (apache#172)

* Fixed pa.fixed_shape_tensor (apache#175)

* [pre-commit.ci] pre-commit autoupdate (apache#173)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.1 → v0.9.4](astral-sh/ruff-pre-commit@v0.9.1...v0.9.4)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: Preserve generic in `ChunkedArray.type` (apache#177)

* release 17.17 (apache#178)

* [pre-commit.ci] pre-commit autoupdate (apache#176)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.4 → v0.9.6](astral-sh/ruff-pre-commit@v0.9.4...v0.9.6)
- [github.com/pre-commit/mirrors-mypy: v1.14.1 → v1.15.0](pre-commit/mirrors-mypy@v1.14.1...v1.15.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: support to construct ListArray with primitive type (apache#179)

* fix: Avoid `chunked_array` overlapping overloads (apache#183)

* fix: Add placeholder annotations to `pc.if_else` (apache#182)

* fix: Widen `Array` to `Array | ChunkedArray` (apache#181)

* fix: add `pc.fill_null` (apache#185)

- https://arrow.apache.org/docs/python/generated/pyarrow.compute.fill_null.html
- https://github.com/narwhals-dev/narwhals/blob/05e47b27ebe27b24196cee5956d07748d65a62ee/narwhals/_arrow/series.py#L675

* fix: Allow Table.from_arrays to take a list containing a mix of Array and ChunkedArray (apache#187)

Update table.pyi

* release 17.18 (apache#188)

* [pre-commit.ci] pre-commit autoupdate (apache#180)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.6 → v0.9.10](astral-sh/ruff-pre-commit@v0.9.6...v0.9.10)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: from_arrays for both Table and RecordBatch (apache#189)

* fix: resolve some `pa.compute` overlaps (apache#184)

* fix: resolve overlapping `compute.(add|divide)`

* fix: copy from non-cloned signature

* fix: resolve overlapping `compute.exp`

* fix: resolve overlapping `compute.power`

* fix: resolve overlapping `compute.equal`

* fix: resolve overlapping `compute.and_`

* fix: Include `Array` in `chunked_array` overload (apache#190)

narwhals-dev/narwhals@0237f7a

* release 17.19 (apache#191)

* Add Scalar, Array and Type classes for Json & Uuid (apache#194)

* Add Scalar, Array and Type classes for Json & Uuid

* Formatting fixes

* [pre-commit.ci] pre-commit autoupdate (apache#192)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.9.10 → v0.11.2](astral-sh/ruff-pre-commit@v0.9.10...v0.11.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Revert "Add Scalar, Array and Type classes for Json & Uuid" (apache#195)

Revert "Add Scalar, Array and Type classes for Json & Uuid (apache#194)"

* fix: Add missing `pc.equal` overload (apache#196)

* feat: support pyarrow 19.0 (apache#198)

* build: upgrade pyarrow min version to 19.0

* feat: support pyarrow 19.0

* omit mypy bool8 override error

* fix: reexport new types (apache#199)

* feat: override new patterns for func repeat and nulls (apache#200)

* fix: reexport decimal64 array and decimal128 array

* feat: override new patterns for func `repeat` and `nulls`

* release: 19.1 (apache#201)

* fix: Allow `Iterable[Table]` in `concat_tables` (apache#203)

https://arrow.apache.org/docs/python/generated/pyarrow.concat_tables.html

> tables : iterable of pyarrow.Table objects

* fix: Allow `ChunkedArray[BooleanScalar]` in `pc.invert` (apache#204)

Fixes https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L298-L299

* feat: Fully spec `TableGroupBy.aggregate` (apache#197)

- https://arrow.apache.org/docs/python/compute.html#grouped-aggregations
- https://arrow.apache.org/docs/python/generated/pyarrow.TableGroupBy.html#pyarrow.TableGroupBy.aggregate
- https://github.com/apache/arrow/blob/34a984c842db42b409a1359e6e2cf167a2365a48/python/pyarrow/table.pxi#L6578-L6604

* fix: Add missing return type to `ChunkedArray.filter` (apache#205)

* fix: Add relaxed final overload to logical functions (apache#206)

Covers all of `pc.(and_ | and_kleene | and_not | and_not_kleene | or_ | or_kleene | xor)`

Resolves:
- https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L219-L233
- https://github.com/narwhals-dev/narwhals/blob/caabc0efdef54f117c83888926860e3972ef69d5/narwhals/_arrow/series.py#L662

* fix: Allow `ChunkedArray` in `Table.set_column` (apache#211)

Also being more consistent with `ArrayOrChunkedArray[Any]` everywhere

Discovered in
- https://github.com/vega/vega-datasets/blob/343b7101391a81190ba24e1e8d62a381d2fef3bd/scripts/species.py#L798-L799

* chore: Ignore `fsspec` `[import-untyped]` (apache#210)

```py
_fs.pyi:18: error: Skipping analyzing "fsspec": module is installed, but missing library stubs or py.typed marker  [import-untyped]
_fs.pyi:18: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports Found 1 error in 1 file (checked 64 source files)
```

- fsspec/filesystem_spec#625
- fsspec/filesystem_spec#1676

* feat: Convert `types.is_*` into `TypeIs` guards (apache#215)

* chore: Add `types.__all__`

* feat: Convert `types._is_*` into `TypeIs` guards

I've been using this for a little while, but makes more sense to live in the stubs
https://github.com/narwhals-dev/narwhals/blob/16427440e6d74939c403083b52ce3fb0af7d63c7/narwhals/_arrow/utils.py#L44-L67

* fix: Resolve `bit_wise_and` overlaps (apache#214)

Fixes 3 errors:
```py
compute.pyi:608:5 - error: Overload 1 for "bit_wise_and" overlaps overload 4 and returns an incompatible type (reportOverlappingOverload) compute.pyi:608:5 - error: Overload 1 for "bit_wise_and" overlaps overload 5 and returns an incompatible type (reportOverlappingOverload) compute.pyi:620:5 - error: Overload 3 for "bit_wise_and" will never be used because its parameters overlap overload 1 (reportOverlappingOverload)
```

* fix: Resolve `list_*` overlapping overloads (apache#213)

* fix: Resolve `list_value_length` overlaps

* fix: Resolve `list_element` overlaps

* fix: Resolve `list_(flatten|slice|parent_indices)` overlaps

An improvement, but still not that accurate

* fix: Include `VarianceOptions` in `TableGroupBy.aggregate` (apache#212)

- Follow-up to apache#197
- Noticed while writing up (narwhals-dev/narwhals#2385)
  - We already use it for `std`, `var` in https://github.com/narwhals-dev/narwhals/blob/16427440e6d74939c403083b52ce3fb0af7d63c7/narwhals/_arrow/group_by.py#L81-L82

* [pre-commit.ci] pre-commit autoupdate (apache#202)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.2 → v0.11.5](astral-sh/ruff-pre-commit@v0.11.2...v0.11.5)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* fix: Resolve `Scalar.as_py` warnings for `DictionaryType` (apache#207)

> scalar.pyi:75:20 - warning: TypeVar "_AsPyTypeK" appears only once in generic function signature
>     Use "object" instead (reportInvalidTypeVarUse)
> scalar.pyi:85:20 - warning: TypeVar "_AsPyTypeK" appears only once in generic function signature
>     Use "object" instead (reportInvalidTypeVarUse)

Instead just using `int`, which should be all that is possible from:
https://github.com/zen-xu/pyarrow-stubs/blob/02552b81161d19d4aa71d8656b028eefac84612b/pyarrow-stubs/__lib_pxi/types.pyi#L154-L164

https://github.com/zen-xu/pyarrow-stubs/blob/02552b81161d19d4aa71d8656b028eefac84612b/pyarrow-stubs/__lib_pxi/types.pyi#L63-L70

* fix: Add default to `pc.sort_indices` (apache#216)

* fix: Add default to `pc.sort_indices`

Fixes narwhals-dev/narwhals#2390 (comment)

Default is specified in https://arrow.apache.org/docs/python/generated/pyarrow.compute.sort_indices.html

* refactor: Reuse some aliases

* fix: Allow `list_size` with `Field` in `pa.list_` (apache#218)

Closes apache#217

* allow `Table` or `RecordBatch` for dataset (apache#222)

allow source argument pyarrow.dataset.dataset() to be RecordBatch | Table

* refactor: Simplify `types` overloads (apache#219)

* fix: `binary` overlap

* fix: Simplify list constructors, `_Ordered`

* refactor: Use `_Tz` default

* fix: iter ChunkedArray should return scalar value (apache#224)

* release: 19.2 (apache#225)

* fix: Add missing `DictionaryArray` methods/properties (apache#226)

- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.indices
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary_decode
- https://arrow.apache.org/docs/python/generated/pyarrow.DictionaryArray.html#pyarrow.DictionaryArray.dictionary_encode

- https://github.com/narwhals-dev/narwhals/blob/c23e56c56630761f0fbc58b575a1c987e57d58d5/narwhals/_arrow/series.py#L787-L798
- https://github.com/narwhals-dev/narwhals/blob/c23e56c56630761f0fbc58b575a1c987e57d58d5/narwhals/_arrow/series_cat.py#L14-L18

* chore: use pyright as static type checker (apache#227)

* use pyright as static type checker

* make pyright happy

* fix: fix pyright action (apache#229)

fix github ci

* fix: Match runtime behavior of `(Table|RecordBatch).select` (apache#221)

* fix: Match runtime behavior of `(Table|RecordBatch).select`

- https://github.com/MarcoGorelli/narwhals/blob/5b02b592183b8d39e2d32e0aedd6c234bb22d405/narwhals/_arrow/dataframe.py#L305-L307
- https://github.com/MarcoGorelli/narwhals/blob/5b02b592183b8d39e2d32e0aedd6c234bb22d405/narwhals/_arrow/dataframe.py#L285-L294

Following up on what I thought was a simple stub issue, but we're both *too strict* and *too permissive* in different ways
{placeholder}

- https://github.com/apache/arrow/blob/d2ddee62329eb711572b4d71d6380673d7f7edd1/python/pyarrow/table.pxi#L4367-L4374
- https://github.com/apache/arrow/blob/d2ddee62329eb711572b4d71d6380673d7f7edd1/python/pyarrow/table.pxi#L1721-L1739

* update select

* update select

---------

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* [pre-commit.ci] pre-commit autoupdate (apache#220)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.5 → v0.11.8](astral-sh/ruff-pre-commit@v0.11.5...v0.11.8)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* feat: narrow scalar when type is given (apache#230)

* rename Uint -> UInt

* feat: narrow scalar when type is given

* release 19.3 (apache#231)

* chore: pyright use strict mode (apache#233)

* fix types

* update array.pyi

* update scalar.pyi

* update

* update array

* update array

* optimize chunked_array

* optimizer iterchunks

* update

* update pyproject.toml

* fix: pa.nulls accept type rather than types (apache#234)

* [pre-commit.ci] pre-commit autoupdate (apache#232)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.8 → v0.11.9](astral-sh/ruff-pre-commit@v0.11.8...v0.11.9)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 19.4 (apache#235)

* lint(pyright): disable reportUnknownMemberType (apache#239)

* [pre-commit.ci] pre-commit autoupdate (apache#236)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.9 → v0.11.13](astral-sh/ruff-pre-commit@v0.11.9...v0.11.13)
- [github.com/RobertCraigie/pyright-python: v1.1.400 → v1.1.401](RobertCraigie/pyright-python@v1.1.400...v1.1.401)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* feat: support pyarrow 20.0 (apache#240)

* [pre-commit.ci] pre-commit autoupdate (apache#241)

updates:
- [github.com/RobertCraigie/pyright-python: v1.1.401 → v1.1.402](RobertCraigie/pyright-python@v1.1.401...v1.1.402)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* support docstring (apache#242)

* doc: complete tensor doc

* doc: complete table doc

* doc: complete scalar doc

* doc: complete orc doc

* doc: complete memory doc

* doc: complete lib doc

* doc: complete json doc

* doc: complete hdfs doc

* doc: complete gcsfs doc

* doc: complete fs doc

* doc: complete flight doc

* doc: complete dataset doc

* doc: complete dataset parquet doc

* doc: complete dataset parquet encryption doc

* doc: complete cuda doc

* doc: complete csv doc

* doc: complete azurefs doc

* doc: complete core doc

* doc: complete interchange doc

* doc: complete array doc

* doc: complete builder doc

* doc: complete device doc

* doc: complete io doc

* doc: complete ipc doc

* doc: complete types doc

* mark deprecated apis

* doc: complete _compute doc

* doc: complete compute doc

* doc: update compute doc

* lint code

* release 20.0.0.20250618 (apache#243)

* fix: make ParquetFileFormat constructor args optional (apache#244)

* fix: Field.remove_metadata should return Self (apache#246)

* [pre-commit.ci] pre-commit autoupdate (apache#245)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.11.13 → v0.12.0](astral-sh/ruff-pre-commit@v0.11.13...v0.12.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 20.0.0.20250627 (apache#247)

* fix: chunked_array with type should be specified (apache#250)

* [pre-commit.ci] pre-commit autoupdate (apache#248)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.12.0 → v0.12.3](astral-sh/ruff-pre-commit@v0.12.0...v0.12.3)
- [github.com/RobertCraigie/pyright-python: v1.1.402 → v1.1.403](RobertCraigie/pyright-python@v1.1.402...v1.1.403)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* release 20.0.0.20250715 (apache#251)

* fix: The type parameter of array should be covariant (apache#253)

* release 20.0.0.20250716 (apache#254)

* Add py.typed file to signify that the library is typed

See the relevant PEP https://peps.python.org/pep-0561

* Prepare `pyarrow-stubs` for history merging

MINOR: [Python] Prepare `pyarrow-stubs` for history merging

Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>

* Add `ty` configuration and suppress error codes

* One line per rule

* Add licence header from original repo for all `.pyi` files

* Revert "Add licence header from original repo for all `.pyi` files"

* Prepare for licence merging

* Exclude `stubs` from `rat` test

* Add Apache licence clause to `py.typed`

* Reduce list

* Resolve merge conflict

---------

Signed-off-by: Jonas Dedden <university@jonas-dedden.de>
Co-authored-by: ZhengYu, Xu <zen-xu@outlook.com>
Co-authored-by: Jim Bosch <talljimbo@gmail.com>
Co-authored-by: Oliver Mannion <125105+tekumara@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Eugene Toder <eltoder@users.noreply.github.com>
Co-authored-by: fvankrieken <fvankrieken@planning.nyc.gov>
Co-authored-by: Ilia Ablamonov <ilia@flamefork.ru>
Co-authored-by: Mathias Beguin <mathias.beguin@hotmail.com>
Co-authored-by: Dylan Scott <dylan.scott@gmail.com>
Co-authored-by: deanm0000 <37878412+deanm0000@users.noreply.github.com>
Co-authored-by: Jan Moravec <moravecj@post.cz>
Co-authored-by: Marius van Niekerk <marius.v.niekerk@gmail.com>
Co-authored-by: Jonas Dedden <university@jonas-dedden.de>
Co-authored-by: Fábio D. Batista <fabio@atelie.dev.br>
Co-authored-by: ben-freist <93315290+ben-freist@users.noreply.github.com>
Co-authored-by: Jiahao Yuan <kahojyun@icloud.com>
Co-authored-by: Pim de Haan <pimdehaan@gmail.com>
Co-authored-by: Dan Redding <125183946+dangotbanned@users.noreply.github.com>
Co-authored-by: Tom Crasset <25140344+tcrasset@users.noreply.github.com>
Co-authored-by: Tom McTiernan <tmct@users.noreply.github.com>
Co-authored-by: Rok Mihevc <rok@mihevc.org>
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3 participants

@julienledem @wesm @emkornfield