Changelog

Version 1.1.1

Released on 2026-04-26 - GitHub - PyPI

• fix: allow stacked values by @henryiii in https://github.com/scikit-hep/uhi/pull/234

Full Changelog: https://github.com/scikit-hep/uhi/compare/v1.1.0…v1.1.1

Version 1.1.0

Released on 2026-04-14 - GitHub - PyPI

What’s Changed

• feat: drop Python 3.9 by @henryiii in https://github.com/scikit-hep/uhi/pull/220

• feat: support metadata-only histograms by @henryiii in https://github.com/scikit-hep/uhi/pull/230

• fix: officially support 32-bit data by @henryiii in https://github.com/scikit-hep/uhi/pull/228

• docs: update and fix testing.md by @eduardo-rodrigues in https://github.com/scikit-hep/uhi/pull/208

• tests: show current packages of interest by @henryiii in https://github.com/scikit-hep/uhi/pull/212

• tests: update for boost-histogram 1.7+ by @henryiii in https://github.com/scikit-hep/uhi/pull/226

• tests: fix installed PoI and add bh 1.7.2 tests by @henryiii in https://github.com/scikit-hep/uhi/pull/232

• chore: update boost-histogram version to 1.6.1 by @APN-Pucky in https://github.com/scikit-hep/uhi/pull/213

• chore: pytest log_level is better than log_cli_level by @henryiii in https://github.com/scikit-hep/uhi/pull/217

• chore: add AGENTS.md and copilot setup by @henryiii in https://github.com/scikit-hep/uhi/pull/229

• ci: bump setup-uv to maintained tag scheme by @henryiii in https://github.com/scikit-hep/uhi/pull/231

New Contributors

• @eduardo-rodrigues made their first contribution in https://github.com/scikit-hep/uhi/pull/208

Full Changelog: https://github.com/scikit-hep/uhi/compare/v1.0.0…v1.1.0

Version 1.0.0

Released on 2025-08-20 - GitHub - PyPI

This release adds a major new UHI feature: serialization. HDF5, ZIP, and JSON are supported. We also now providing a testing helper, to assist in developing libraries that want to comply with UHI. Python 3.9+ is required, and 3.14 is supported. We now ship nightlies to the Scientific-Python nightly wheels. See the release post for more info!

What’s Changed

Serialization

• feat: add writer_info field by @henryiii in https://github.com/scikit-hep/uhi/pull/154

• feat: remove data nesting by @henryiii in https://github.com/scikit-hep/uhi/pull/155

• feat: add read/write support by @henryiii in https://github.com/scikit-hep/uhi/pull/167

• feat: add uhi_schema, lots of fixes by @henryiii in https://github.com/scikit-hep/uhi/pull/185

• feat: unserializable metadata by @henryiii in https://github.com/scikit-hep/uhi/pull/186

• feat: upstreaming a bit from boost-histogram/hist by @henryiii in https://github.com/scikit-hep/uhi/pull/188

• feat: add sparse histogram support by @henryiii in https://github.com/scikit-hep/uhi/pull/194

• feat: support compression with HDF5 by @henryiii in https://github.com/scikit-hep/uhi/pull/205

• refactor: use IR for intermediate representation typing helpers by @henryiii in https://github.com/scikit-hep/uhi/pull/200

• fix: touch up serialization, add TypedDict by @henryiii in https://github.com/scikit-hep/uhi/pull/151

• fix: typing update for recent change by @henryiii in https://github.com/scikit-hep/uhi/pull/157

• fix: tighten metadata definition by @henryiii in https://github.com/scikit-hep/uhi/pull/163

• fix: include fixes for metadata types by @henryiii in https://github.com/scikit-hep/uhi/pull/165

• fix: missing item in __all__ by @henryiii in https://github.com/scikit-hep/uhi/pull/196

• fix: weighted_mean sparse histogram fix, and tests by @henryiii in https://github.com/scikit-hep/uhi/pull/204

• fix: don’t store an empty metadata dict by @henryiii in https://github.com/scikit-hep/uhi/pull/206

• tests: require fastjsonschema by @henryiii in https://github.com/scikit-hep/uhi/pull/138

• tests: more tests for schema by @henryiii in https://github.com/scikit-hep/uhi/pull/166

• tests: add json serialize test by @henryiii in https://github.com/scikit-hep/uhi/pull/190

• tests: add hdf5 and zip tests by @henryiii in https://github.com/scikit-hep/uhi/pull/191

• tests: fix hdf5 install by @henryiii in https://github.com/scikit-hep/uhi/pull/207

• chore: use Required/NotRequired by @henryiii in https://github.com/scikit-hep/uhi/pull/197

Testing helper

• feat: starting generic testing framework by @henryiii in https://github.com/scikit-hep/uhi/pull/150

• feat: split up test by dimension by @henryiii in https://github.com/scikit-hep/uhi/pull/171

• feat: add 2d tests by @henryiii in https://github.com/scikit-hep/uhi/pull/172

• feat: wrap bins in generic tests by @APN-Pucky in https://github.com/scikit-hep/uhi/pull/176

• docs: add docs on testing by @henryiii in https://github.com/scikit-hep/uhi/pull/199

• fix(tests): provide uhi serialized form by @henryiii in https://github.com/scikit-hep/uhi/pull/198

Other

• fix: drop Slicer for np.s_ by @henryiii in https://github.com/scikit-hep/uhi/pull/153

• tests: add fixture for valid/invalid by @henryiii in https://github.com/scikit-hep/uhi/pull/195

• chore: add CITATION file by @henryiii in https://github.com/scikit-hep/uhi/pull/192

• chore: add recent author to list by @henryiii in https://github.com/scikit-hep/uhi/pull/189

• chore: fix release note helper by @henryiii in https://github.com/scikit-hep/uhi/pull/203

• chore: min version of numpy for 3.9 by @henryiii in https://github.com/scikit-hep/uhi/pull/193

• chore: modernize licensing and dep groups by @henryiii in https://github.com/scikit-hep/uhi/pull/149

• chore: prepare for 1.0 by @henryiii in https://github.com/scikit-hep/uhi/pull/202

• chore: update to 3.9+ by @henryiii in https://github.com/scikit-hep/uhi/pull/187

• ci: anaconda nightlies by @henryiii in https://github.com/scikit-hep/uhi/pull/180

• docs: Make it clear that sum/projection does eliminate axis/histogram by @APN-Pucky in https://github.com/scikit-hep/uhi/pull/135

• docs: fix shallow clone by @henryiii in https://github.com/scikit-hep/uhi/pull/201

New Contributors

• @APN-Pucky made their first contribution in https://github.com/scikit-hep/uhi/pull/135

Full Changelog: https://github.com/scikit-hep/uhi/compare/v0.5.0…v1.0.0

Version 0.5.0

Released on 2024-10-03 - GitHub - PyPI

This release requires Python 3.8, and adds explicit support for 3.13. It has an experimental schema for serialization - this will be considered final once there are 1-2 implementations of it. We now provide attestations for releases.

What’s Changed

• feat: modernize, Python 3.8+ by @henryiii in https://github.com/scikit-hep/uhi/pull/130

• feat: add a schema for serialization by @henryiii in https://github.com/scikit-hep/uhi/pull/105

• fix: one more schema ending issue by @henryiii in https://github.com/scikit-hep/uhi/pull/119

• ci: macos-latest is changing to macos-14 ARM runners by @henryiii in https://github.com/scikit-hep/uhi/pull/127

• chore: update nox and use uv by @henryiii in https://github.com/scikit-hep/uhi/pull/131

• chore: more minor modernizations by @henryiii in https://github.com/scikit-hep/uhi/pull/132

• docs: add zenodo badge by @henryiii in https://github.com/scikit-hep/uhi/pull/116

Full Changelog: https://github.com/scikit-hep/uhi/compare/v0.4.0…v0.5.0

Version 0.4.0

Released on 2023-10-17 - GitHub - PyPI

This release primarily drops Python 3.6 support. It also adds official 3.12 support. The changelog is now part of the docs.

• chore: drop Python 3.6 by @henryiii in https://github.com/scikit-hep/uhi/pull/84

• chore: move to using Ruff by @henryiii in https://github.com/scikit-hep/uhi/pull/86

• ci: fix readthedocs by @henryiii in https://github.com/scikit-hep/uhi/pull/99

• chore: target-version no longer needed by Black or Ruff by @henryiii in https://github.com/scikit-hep/uhi/pull/103

• chore: sp-repo-review by @henryiii in https://github.com/scikit-hep/uhi/pull/107

• docs: prepare for schema addition by @henryiii in https://github.com/scikit-hep/uhi/pull/113

• chore: add a check and bump NumPy by @henryiii in https://github.com/scikit-hep/uhi/pull/114

• docs: add changelog by @henryiii in https://github.com/scikit-hep/uhi/pull/115

Full Changelog: https://github.com/scikit-hep/uhi/compare/v0.3.3…v0.4.0

Version 0.3.3

Released on 2023-01-04 - GitHub - PyPI

• ci: update to Python 3.11 final by @henryiii in https://github.com/scikit-hep/uhi/pull/76

• chore: adapt to new versions by @henryiii in https://github.com/scikit-hep/uhi/pull/82

• fix: use ABC for ROOTAxis by @henryiii and @pre-commit-ci in https://github.com/scikit-hep/uhi/pull/79

• chore: use svn versioning by @henryiii in https://github.com/scikit-hep/uhi/pull/83

Full Changelog: https://github.com/scikit-hep/uhi/compare/v0.3.2…v0.3.3

Version 0.3.2

Released on 2022-09-20 - GitHub - PyPI

Minor release, mostly updating to indicate Python 3.11 support. Moved the backend to Hatchling from Flit.

• Fix punctuation by @klieret in https://github.com/scikit-hep/uhi/pull/60

• chore: switch to hatchling by @henryiii in https://github.com/scikit-hep/uhi/pull/63

• chore: include 3.11 by @henryiii in https://github.com/scikit-hep/uhi/pull/72

New Contributors

• @klieret made their first contribution in https://github.com/scikit-hep/uhi/pull/60

Full Changelog: https://github.com/scikit-hep/uhi/compare/v0.3.1…v0.3.2

Version 0.3.1

Released on 2022-01-06 - GitHub - PyPI

Officially supports Python 3.10. Build system moved to Flit, with a PDM option to replace the old Poetry system if users want to develop in a locked environment. Updated to mypy 0.930 and Numpy 1.22. Type ignores now list the error code(s).

Version 0.3.0

Released on 2021-06-15 - GitHub - PyPI

The conversion utility now supports PyROOT histograms, thanks to @pieterdavid. Standard maintenance updates, including moving to mypy 0.902.

Version 0.2.1

Released on 2021-03-18 - GitHub - PyPI

Small patch release to add missing test files #15 to the SDist, for downstream packagers like conda-forge. Nox support added for easy development & development tasks, like bumping the version.

Version 0.2.0

Released on 2021-03-17 - GitHub - PyPI

Version 1.2 of the PlottableHistogram Protocol; allows iteration over an axis and requires the return types are np.ndarrays (#11). Adds a new runtime utility to simplify plotting libraries that want to use UHI at runtime (#13).

Version 0.1.2

Released on 2021-03-09 - GitHub - PyPI

Fix an issue with PlottableProtocol requiring writable properties (#9). Corrected the internal version number to match the external one. Eased up the requirements upper bounds just a bit.

Version 0.1.1

Released on 2021-01-29 - GitHub - PyPI

First release with correct PyPI landing page (Poetry requires a readme key).