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ARROW-185: Make padding and alignment for all buffers be 64 bytes #74

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emkornfield
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  • some small cleanup/removal of unnecessary code. I think there is likely a good opportunity to factor this code better generally, but this seems to work for now.

emkornfield
emkornfield reviewed May 11, 2016
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cpp/src/arrow/util/buffer.cc
constexpr int64_t multiple_bitmask = round_to - 1;
int64_t remainder = num & multiple_bitmask;
int rounded = num;
if (remainder) { rounded += 64 - remainder; }
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should use round_to here. I'm also pretty sure there is something clever we could do to avoid the condition here, but at the moment I'm blanking on it.

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Does this do it?

(num + multiple_bitmask) & ~multiple_bitmask

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that looks right to me. although the performance gains are probably moot given the other condition for overflow.

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hmm, tests passed locally, will need to take a closer look at what is going on.

wesm
wesm reviewed May 12, 2016
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cpp/src/arrow/util/buffer.h
virtual ~Buffer();

// An offset into data that is owned by another buffer, but we want to be
// able to retain a valid pointer to it even after other shared_ptr's to the
// parent buffer have been destroyed
// TODO(emkornfield) how will this play with 64 byte alignment/padding?
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Inevitably alignment and padding isn't always going to be a guarantee on in-memory data (of course when data is moved for IPC purposes, that will need to be guaranteed). I suppose then that buffers will need to be able to communicate their alignment/padding for algorithm selection (i.e. can we use the spiffy AVX512 function or not?)

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I think we need to see how use-cases play out. It seems given the current spec, most slicing operations in the general case will need memory allocation anyways. We could likely guarantee alignment/padding by providing a utility method that either allocates slices if it can keep the contract otherwise allocates new underlying data. For now I will put a warning here.

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still need to address other comments, but pushed a commit that should allow C++ tests to pass, I still need to check if python tests are still failing.

@emkornfield emkornfield changed the title ARROW-185: Make padding and alignment for all buffers be 64 bytes [WIP] ARROW-185: Make padding and alignment for all buffers be 64 bytes May 13, 2016
@emkornfield emkornfield changed the title [WIP] ARROW-185: Make padding and alignment for all buffers be 64 bytes ARROW-185: Make padding and alignment for all buffers be 64 bytes May 17, 2016
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should be ready for review. Not done here is verification of alignment on RPC I will open up a jira to address this, if that is ok.

wesm
wesm reviewed May 17, 2016
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cpp/src/arrow/util/buffer.h
//
// This method makes no assertions about alignment or padding of the buffer but
// in general we expected buffers to be aligned and padded to 64 bytes. In the future
// we might add utility methods to help determine if a buffer satisfies this contract.
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Probably what we can do is add a method to produce a buffer that is guaranteed to be aligned and padded (allocating as necessary). For example: if there is incoming data from another library to libarrow that is not aligned or padded, some algorithms may work without alignment or padding, while others (e.g. requiring SIMD) would require the buffer to be "fixed". This could get pretty hairy, though...

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I'm thinking about the case where an Arrow array is constructed from memory allocated elsewhere with zero copy

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wesm commented May 17, 2016

LGTM. thank you for the thorough efforts on this. +1

@asfgit asfgit closed this in 9c59158 May 17, 2016
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Aug 30, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
0cae753 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Aug 30, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
42072e2 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Aug 30, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
150a0b2 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Aug 30, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
e9893bd 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
wesm added a commit to wesm/arrow that referenced this pull request Sep 2, 2018
@wesm
PARQUET-488: Add SSE cmake toggle, fix build on systems without SSE
d7669cd 
I added an option to make SSE strictly opt-in for now. As a side effect of this, parquet-cpp now builds and the test suite passes out of the box on 32-bit ARMv7 (I tried it on my RaspberryPi Model B 2).

Author: Wes McKinney <wesm@apache.org>

Closes apache#74 from wesm/PARQUET-488 and squashes the following commits:

61225e9 [Wes McKinney] Use -march=native
3833efd [Wes McKinney] Remove stale cmake comment
70fcf65 [Wes McKinney] Add cmake PARQUET_USE_SSE option
775c72d [Wes McKinney] Fix compilation on arm7/raspberrypi
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Sep 4, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
a4b2422 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
wesm added a commit to wesm/arrow that referenced this pull request Sep 4, 2018
@wesm
PARQUET-488: Add SSE cmake toggle, fix build on systems without SSE
dc9cbbb 
I added an option to make SSE strictly opt-in for now. As a side effect of this, parquet-cpp now builds and the test suite passes out of the box on 32-bit ARMv7 (I tried it on my RaspberryPi Model B 2).

Author: Wes McKinney <wesm@apache.org>

Closes apache#74 from wesm/PARQUET-488 and squashes the following commits:

61225e9 [Wes McKinney] Use -march=native
3833efd [Wes McKinney] Remove stale cmake comment
70fcf65 [Wes McKinney] Add cmake PARQUET_USE_SSE option
775c72d [Wes McKinney] Fix compilation on arm7/raspberrypi

Change-Id: If8e4e7e1b7fc64df952cb8b82662bb017ca56f72
wesm added a commit to wesm/arrow that referenced this pull request Sep 6, 2018
@wesm
PARQUET-488: Add SSE cmake toggle, fix build on systems without SSE
1dd8582 
I added an option to make SSE strictly opt-in for now. As a side effect of this, parquet-cpp now builds and the test suite passes out of the box on 32-bit ARMv7 (I tried it on my RaspberryPi Model B 2).

Author: Wes McKinney <wesm@apache.org>

Closes apache#74 from wesm/PARQUET-488 and squashes the following commits:

61225e9 [Wes McKinney] Use -march=native
3833efd [Wes McKinney] Remove stale cmake comment
70fcf65 [Wes McKinney] Add cmake PARQUET_USE_SSE option
775c72d [Wes McKinney] Fix compilation on arm7/raspberrypi

Change-Id: If8e4e7e1b7fc64df952cb8b82662bb017ca56f72
wesm added a commit to wesm/arrow that referenced this pull request Sep 7, 2018
@wesm
PARQUET-488: Add SSE cmake toggle, fix build on systems without SSE
3bb61ba 
I added an option to make SSE strictly opt-in for now. As a side effect of this, parquet-cpp now builds and the test suite passes out of the box on 32-bit ARMv7 (I tried it on my RaspberryPi Model B 2).

Author: Wes McKinney <wesm@apache.org>

Closes apache#74 from wesm/PARQUET-488 and squashes the following commits:

61225e9 [Wes McKinney] Use -march=native
3833efd [Wes McKinney] Remove stale cmake comment
70fcf65 [Wes McKinney] Add cmake PARQUET_USE_SSE option
775c72d [Wes McKinney] Fix compilation on arm7/raspberrypi

Change-Id: If8e4e7e1b7fc64df952cb8b82662bb017ca56f72
wesm added a commit to wesm/arrow that referenced this pull request Sep 8, 2018
@wesm
PARQUET-488: Add SSE cmake toggle, fix build on systems without SSE
41920f5 
I added an option to make SSE strictly opt-in for now. As a side effect of this, parquet-cpp now builds and the test suite passes out of the box on 32-bit ARMv7 (I tried it on my RaspberryPi Model B 2).

Author: Wes McKinney <wesm@apache.org>

Closes apache#74 from wesm/PARQUET-488 and squashes the following commits:

61225e9 [Wes McKinney] Use -march=native
3833efd [Wes McKinney] Remove stale cmake comment
70fcf65 [Wes McKinney] Add cmake PARQUET_USE_SSE option
775c72d [Wes McKinney] Fix compilation on arm7/raspberrypi

Change-Id: If8e4e7e1b7fc64df952cb8b82662bb017ca56f72
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Sep 10, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
495956a 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
praveenbingo added a commit to praveenbingo/arrow that referenced this pull request Sep 10, 2018
@praveenbingo
GDV-95:[C++]Match gandiva mod operator to dremio for mod zero. (apach…
7a456f4 
…e#74)

* Temporarily matching what the dremio does for mod zero.
* Used the latest Arrow APIs for allocating buffers.
xuechendi pushed a commit to xuechendi/arrow that referenced this pull request Aug 4, 2020
@zhouyuan
Merge pull request apache#74 from rongma1997/native-compression
f8b201f 
[Java] compression workaround
@emkornfield emkornfield deleted the emk_fix_allocations_PR branch February 26, 2021 05:14
zhouyuan added a commit to zhouyuan/arrow that referenced this pull request Jan 10, 2022
@zhouyuan @zhztheplayer
Fix wrong Tell() result from BufferedOutputStream in an edge case (ap…
21698d7 
…ache#73) (apache#74)

Co-authored-by: Hongze Zhang <hongze.zhang@intel.com>
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paddyroddy pushed a commit to rok/arrow that referenced this pull request Jul 19, 2025
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[pre-commit.ci] pre-commit autoupdate (apache#74)
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rok added a commit to rok/arrow that referenced this pull request Jul 24, 2025
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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)

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

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- [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)
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* 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:
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* 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:
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- [github.com/pre-commit/mirrors-mypy: v1.12.1 → v1.13.0](pre-commit/mirrors-mypy@v1.12.1...v1.13.0)

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* Add missing type for FlightEndpoint (apache#136)

* release 17.11 (apache#139)

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

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

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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)

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

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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)

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* 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)

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* 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

---------

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

updates:
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* 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)

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* 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)

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* 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)

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* 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)

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* 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:
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* 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>
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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>
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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>
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Co-authored-by: Jiahao Yuan <kahojyun@icloud.com>
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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>
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)
f20eb82 
* 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)

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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:
- [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)

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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)

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* 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)

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* 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)

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* 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)

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* 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)

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* 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)

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* 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>
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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)
9231be7 
* 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)

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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@emkornfield @wesm