Version 2.7.0

This release drops support for Python 3.8. The supported Python versions are now 3.9 through 3.13 (inclusive). Other than that, it does not differ from 2.6.10.

New features

(none!)

Bug-fixes and performance

(none!)

Other

• chore: remove Python 3.8, ensure Python 3.13 is included by @jpivarski in #3295

Full Changelog: v2.6.10...v2.7.0

Version 2.6.10

New features

• feat: named axis for ak.Array by @pfackeldey in #3238
• feat: to/from TensorFlow Tensor by @maxymnaumchyk in #3292
• feat: updated LayoutBuilder.h (added functors) for C++11 compatibility by @jpivarski in #3281

Bug-fixes and performance

• fix: make sure 'at' is a cupy zero dim array by @ianna in #3271
• fix: add cuda backend support for to_raggedtensor and from_raggedtensor functions by @maxymnaumchyk in #3263
• fix: test from_raggedtensor on GPU by @ianna in #3288
• fix: correct handling of keepdims and mask_identity for weighted mean by @nj-vs-vh in #3291

Other

• docs: add tacaswell as a contributor for maintenance by @allcontributors in #3273
• docs: add basnijholt as a contributor for maintenance by @allcontributors in #3287
• docs: add nj-vs-vh as a contributor for code by @allcontributors in #3293
• chore: update pre-commit hooks by @pre-commit-ci in #3275
• chore: delete .DS_Store and add it to .gitignore by @basnijholt in #3286
• chore(deps): bump the actions group across 1 directory with 2 updates by @dependabot in #3290
• test: add simple slice test to cuda by @martindurant in #3242
• chore: update pre-commit hooks by @pre-commit-ci in #3284
• chore: increase try-it version of Awkward to 2.6.4 by @jpivarski in #3279

New Contributors

• @basnijholt made their first contribution in #3286
• @nj-vs-vh made their first contribution in #3291

Full Changelog: v2.6.9...v2.6.10

Version 2.6.9

New features

• feat: Add to_cudf by @martindurant in #3051
• feat: to/from PyTorch Tensor by @maxymnaumchyk in #3259

Bug-fixes and performance

• perf: avoid inflating UnmaskedArrays in broadcasting when you can by @jpivarski in #3254
• fix: TypeError fix for can_cast by @ianna in #3255
• fix: ListArray slicing on GPU by @ianna in #3248
• fix: ak.typetracer.length_one_if_typetracer with option and union types by @jpivarski in #3266

Other

• docs: add ariostas as a contributor for code by @allcontributors in #3240
• docs: add maxymnaumchyk as a contributor for code by @allcontributors in #3241
• docs: pybind11 demo project should have NumPy own the data by @jpivarski in #3261
• ci: use official GHA for uv by @henryiii in #3269
• ci: restore Windows 32-bit wheels by @henryiii in #3268
• chore: update RapidJSON by @tacaswell in #3249
• chore: update affiliation in CITATION.cff by @ManasviGoyal in #3251
• chore(deps): bump the actions group across 1 directory with 3 updates by @dependabot in #3260
• chore: update pre-commit hooks by @pre-commit-ci in #3245

New Contributors

• @tacaswell made their first contribution in #3249

Full Changelog: v2.6.8...v2.6.9

Version 2.6.8

New features

• feat: Add ak.array_equal by @tcawlfield in #3215
• feat: to TensorFlow RaggedTensor by @maxymnaumchyk in #3210
• feat: provide a way for Form.select_columns to distinguish structural dots from dots in the names of record fields by @tcawlfield in #3222

Bug-fixes and performance

• fix: 2881 akconcatenate fails trying to concatenate too many nested arrays by @tcawlfield in #3207
• fix: adjust checks in ForthMachine to prevent segfault when num_items is negative by @ariostas in #3209
• fix: generalize Index.ptr by @jpivarski in #3206
• fix: add ak.array_equal to NEP18 overrides, documentation, and add one more test by @tcawlfield in #3225
• fix: cuda max reducer bugfix and more tests by @ianna in #3228
• fix: empty arrays in ak.to_parquet with extensionarray=True by @jpivarski in #3234
• fix: GPU complex reducer prod for empty lists by @ianna in #3235

Other

• test: loosen message on test_2757 due to upstream Cython changes by @jpivarski in #3224
• style: fix documentation by @maxymnaumchyk in #3227
• ci: add 3.13 wheels by @henryiii in #3217
• chore: update pre-commit hooks by @pre-commit-ci in #3204
• chore(deps): bump the actions group across 1 directory with 3 updates by @dependabot in #3233

New Contributors

• @ariostas made their first contribution in #3209
• @maxymnaumchyk made their first contribution in #3210

Full Changelog: v2.6.7...v2.6.8

Version 2.6.7

New features

• feat: combinations kernels by @ManasviGoyal in #3150
• feat: complex reducers by @ManasviGoyal in #3149

Bug-fixes and performance

• fix: use classic linker with AppleClang 15+ by @henryiii in #3167
• fix: unexpected behaviour of akwhere with arrays containing nones by @tcawlfield in #3168
• fix: out of bounds index access issue in argmin and argmax complex in CPU kernel by @ManasviGoyal in #3176
• fix: refine the implementation of copy_behaviors by @Saransh-cpp in #3177
• fix: ak.to_parquet for a record-like non-Record by @jpivarski in #3175
• fix: proposal for #2947 by @maxgalli in #3191
• fix: requesting layout.form should not touch shape by @jpivarski in #3189
• fix: issue #3118 and #3185 by @pfackeldey in #3193
• fix: change np.integer to numbers.Integral by @maxgalli in #3195

Other

• ci: fix incorrect SDist name by @henryiii in #3201
• docs: add maxgalli as a contributor for code by @allcontributors in #3198
• docs: add pfackeldey as a contributor for code by @allcontributors in #3199
• chore(deps): bump the actions group across 1 directory with 4 updates by @dependabot in #3184
• chore: update pre-commit hooks by @pre-commit-ci in #3172
• chore(deps): bump docker/setup-qemu-action from 3.1.0 to 3.2.0 in the actions group across 1 directory by @dependabot in #3190

New Contributors

• @maxgalli made their first contribution in #3191
• @pfackeldey made their first contribution in #3193

Full Changelog: v2.6.6...v2.6.7

Version 2.6.6

New features

• feat: add slicing CUDA kernels by @ManasviGoyal in #3140
• feat: add some misc CUDA kernels by @ManasviGoyal in #3141
• feat: Adding awkward.semipublic submodule by @tcawlfield in #3152
• feat: 3154 from_parquet should be able to read partial columns by @tcawlfield in #3156
• feat: add reduce kernels by @ManasviGoyal in #3136
• feat: copy_behaviors to make sub-classing easy by @Saransh-cpp in #3137

Bug-fixes and performance

• fix: use grid-stride looping for kernels with variable-length loops by @ManasviGoyal in #3130
• fix: don't let CuPy iterate over Index with Python for loops by @jpivarski in #3142
• fix: correct dtypes for numpy v2 by @ianna in #3159
• fix: ak.from_numpy should fail on zero-dimensional arrays. by @tcawlfield in #3161

Other

• test: reducer CUDA kernel tests by @ManasviGoyal in #3162
• ci: Ensure attestations for awkward-cpp sdist and wheels by @matthewfeickert in #3135
• ci: faster wheel builds by @henryiii in #3146
• chore: update pre-commit hooks by @pre-commit-ci in #3139
• chore(deps): bump the actions group across 1 directory with 3 updates by @dependabot in #3153
• chore: trying atomics and tree reduction for CUDA reducer kernels by @ManasviGoyal in #3123
• chore: update pre-commit hooks by @pre-commit-ci in #3145

Full Changelog: v2.6.5...v2.6.6

Version 2.6.5

New features

• feat: 2772 pyarrow doesnt permit selective reading with extensionarray by @tcawlfield in #3127

Bug-fixes and performance

• fix: skip failing test when jax is not installed by @ianna in #3112
• fix: skip tests that require pyarrow when it is not installed by @ianna in #3114
• fix: generate array view by @ianna in #3115
• fix: Header-only fix is_valid for empty Indexed or IndexedOption by @zonca in #3120
• fix: wait for Jitify performing a one-time only warm-up by @ianna in #3113
• fix: prevent exponential memory growth in UnionArray by @jpivarski in #3119

Other

• ci: Add GitHub artifact attestations to package distribution by @matthewfeickert in #3126
• chore: update pre-commit hooks by @pre-commit-ci in #3106
• chore: update RapidJSON by @jpivarski in #3110
• chore: pin pyarrow to 16.0.0 by @ianna in #3124
• chore: update pre-commit hooks by @pre-commit-ci in #3117
• chore(deps): bump the actions group across 1 directory with 2 updates by @dependabot in #3125

Full Changelog: v2.6.4...v2.6.5

Version 2.6.4

New features

• feat: TypeTracerReport.data_touched_in should ignore unrecognized node_ids by @jpivarski in #3074
• feat: better error message for missing dispatch by @jpivarski in #3078
• feat: add boolean cases for CPU kernels by @ManasviGoyal in #3059
• feat: add ak.flatten and ak.concatenate kernels by @ManasviGoyal in #3086

Bug-fixes and performance

• fix: restrict ak.softmax to axis=-1, the only axis for which the calculation is correct right now by @jpivarski in #3072
• fix: Numpy 2.0 out of bounds error for BitMaskedArray Py kernels by @ManasviGoyal in #3073
• fix: _is_getitem_at_placeholder logic was backward for UnionArray by @jpivarski in #3083
• fix: refuse dak.Array in hidden-but-public-functions by @jpivarski in #3079
• fix: PyPy segfault may be related to using out-of-scope array by @jpivarski in #3093
• fix: distributed rdataframe is not yet support by @ianna in #3087
• fix: support conversion to arrow and back with non-option Unknown type by @tcawlfield in #3085
• fix: intermittent segfault in PyPy by @ianna in #3089
• fix: is_valid checks in header-only library by @zonca in #3091
• fix: UnmaskedArray was missing its _nextcarry_outindex by @jpivarski in #3097

Other

• test: cuda integration tests by @ManasviGoyal in #3065
• ci: macos-latest is changing to macos-14 ARM runners by @henryiii in #3092
• docs: new Try-It page based on plain Pyodide by @jpivarski in #3058
• docs: Add installation of nightly wheels instructions by @matthewfeickert in #3080
• docs: revamp documentation by @jpivarski in #3076
• chore: update pre-commit hooks by @pre-commit-ci in #3075
• chore: update pre-commit hooks by @pre-commit-ci in #3082
• chore: update pre-commit hooks by @pre-commit-ci in #3090
• chore: update pre-commit hooks by @pre-commit-ci in #3096
• chore(deps): bump amannn/action-semantic-pull-request from 5.4.0 to 5.5.2 in the actions group by @dependabot in #3095

Full Changelog: v2.6.3...v2.6.4

Version 2.6.3

This is the first release of Awkward Array that is compatible with NumPy 2.0.

New features

• feat!: printing a typetracer array should not touch it by @jpivarski in #3019
• feat: add to_parquet_dataset function by @zbilodea in #2898
• feat: adding support for numpy.real, imag, round, angle, by @tcawlfield in #3053
• feat: add miscellaneous CUDA kernels by @ManasviGoyal in #3021
• feat: add dask_tokenize hook by @lgray in #3017
• feat: added a commit method on TypeTracerReport to identify touched buffers in the Dask DAG-building pass by @jpivarski in #3043
• feat: Allow interoperability with numpy 2.x by @tcawlfield in #3064

Bug-fixes and performance

• fix: return ufunc as it is for user defined vectorized funcs by @Saransh-cpp in #3025
• fix: Support structured arrays in option type to_numpy by @zonca in #3060
• fix: Windows and 32-bit Linux default to 32-bit integers in sums and prods UNLESS it's NumPy 2.0 by @jpivarski in #3068
• perf: add a flag to turn off isinstance in TypeTracerArray._new by @jpivarski in #3054

Other

• test: TEMPORARY edits to get tests working for all PRs: NumPy 2.0 cap and turned off Try-It by @jpivarski in #3057
• test: new cuda kernels by @ManasviGoyal in #2922
• ci: Make wheel building workflow reusable by @matthewfeickert in #3016
• docs: fix styling of icons by @agoose77 in #3042
• docs: add a link to documentation of AwkwardArray in Julia by @ianna in #3052
• docs: add tcawlfield as a contributor for code by @allcontributors in #3067
• chore: keeping CONTRIBUTING.md up to date (take 1) by @jpivarski in #3038
• chore(deps): bump the actions group with 3 updates by @dependabot in #3048
• chore: update pre-commit hooks by @pre-commit-ci in #3050
• chore: update pre-commit hooks by @pre-commit-ci in #3063
• chore: update pre-commit hooks by @pre-commit-ci in #3069

New Contributors

• @tcawlfield made their first contribution in #3053

Full Changelog: v2.6.2...v2.6.3

Version 2.6.3rc2

New features

• feat!: printing a typetracer array should not touch it by @jpivarski in #3019
• feat: add to_parquet_dataset function by @zbilodea in #2898
• feat: adding support for numpy.real, imag, round, angle, by @tcawlfield in #3053
• feat: add miscellaneous CUDA kernels by @ManasviGoyal in #3021
• feat: add dask_tokenize hook by @lgray in #3017
• feat: added a commit method on TypeTracerReport to identify touched buffers in the Dask DAG-building pass by @jpivarski in #3043

Bug-fixes and performance

• fix: return ufunc as it is for user defined vectorized funcs by @Saransh-cpp in #3025
• perf: add a flag to turn off isinstance in TypeTracerArray._new by @jpivarski in #3054

Other

• docs: fix styling of icons by @agoose77 in #3042
• docs: add a link to documentation of AwkwardArray in Julia by @ianna in #3052
• ci: Make wheel building workflow reusable by @matthewfeickert in #3016
• test: TEMPORARY edits to get tests working for all PRs: NumPy 2.0 cap and turned off Try-It by @jpivarski in #3057
• chore: keeping CONTRIBUTING.md up to date (take 1) by @jpivarski in #3038
• chore(deps): bump the actions group with 3 updates by @dependabot in #3048
• chore: update pre-commit hooks by @pre-commit-ci in #3050

New Contributors

• @tcawlfield made their first contribution in #3053

Full Changelog: v2.6.2...v2.6.3rc2