feat: modernize, Python 3.8+

.github/workflows/cd.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   dist:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
       with:
@@ -29,11 +29,18 @@ jobs:
       url: https://pypi.org/p/uhi
     permissions:
       id-token: write
+      attestations: write
 
     steps:
     - uses: actions/download-artifact@v4
       with:
         name: Packages
         path: dist
 
+    - uses: actions/attest-build-provenance@v1
+      with:
+        subject-path: "dist/*"
+
     - uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        attestations: true

.github/workflows/ci.yml

@@ -18,16 +18,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.12"]
-        runs-on: [ubuntu-latest, macos-13, windows-latest]
+        python-version: ["3.8", "3.13"]
+        runs-on: [ubuntu-latest, macos-latest, windows-latest]
 
         include:
-        - python-version: pypy-3.9
-          runs-on: ubuntu-latest
-        - python-version: "3.7"
-          runs-on: ubuntu-20.04
-        exclude:
-        - python-version: "3.7"
+        - python-version: pypy-3.10
           runs-on: ubuntu-latest
 
     steps:
@@ -38,6 +33,7 @@ jobs:
     - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
 
     - name: Install package
       run: python -m pip install .[test,schema]
@@ -59,7 +55,6 @@ jobs:
 
     - uses: conda-incubator/setup-miniconda@v3
       with:
-        miniforge-variant: Mambaforge
         use-mamba: true
         environment-file: environment.yml
 

.pre-commit-config.yaml

@@ -2,11 +2,6 @@ ci:
   autoupdate_commit_msg: 'chore: update pre-commit hooks'
 
 repos:
-  - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 24.8.0
-    hooks:
-    - id: black
-
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.6.0
     hooks:
@@ -26,6 +21,7 @@ repos:
     hooks:
       - id: ruff
         args: ["--fix", "--show-fixes"]
+      - id: ruff-format
 
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: v1.11.2
@@ -34,9 +30,8 @@ repos:
       files: ^(src|tests)
       args: []
       additional_dependencies:
-        - numpy~=1.26.0
+        - numpy
         - pytest
-        - importlib_metadata
         - importlib_resources
 
   - repo: https://github.com/pre-commit/pygrep-hooks
@@ -60,8 +55,8 @@ repos:
         entry: PyBind|Numpy|Cmake|CCache|Github|PyTest
         exclude: .pre-commit-config.yaml
 
-  - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: "v4.0.0-alpha.8"
+  - repo: https://github.com/rbubley/mirrors-prettier
+    rev: "v3.3.3"
     hooks:
       - id: prettier
         types_or: [json]

README.md

@@ -24,7 +24,7 @@ It is not usually a runtime dependency, but only a type checking, testing,
 and/or docs dependency in support of other libraries (such as
 [boost-histogram][] 0.13+, [hist][] 2.1+, [mplhep][] 0.2.15+, [uproot][] 4+,
 and [histoprint][] 2+).  There are a few useful runtime usable components
-(listed below). It requires Python 3.6+. [See what's
+(listed below). Older versions are available for Python 3.6+. [See what's
 new](https://github.com/scikit-hep/uhi/releases).
 
 To assist plotting libraries in accepting Histograms from classic sources, see

docs/conf.py

@@ -6,14 +6,8 @@
 
 from __future__ import annotations
 
+import importlib.metadata
 import os
-import sys
-
-if sys.version_info < (3, 8):
-    import importlib_metadata as metadata
-else:
-    import importlib.metadata as metadata
-
 
 # -- Project information -----------------------------------------------------
 
@@ -22,7 +16,7 @@
 author = "Henry Schreiner, Hans Dembinski, Jim Pivarski"
 
 # The full version, including alpha/beta/rc tags
-version = release = metadata.version("uhi")
+version = release = importlib.metadata.version("uhi")
 
 
 # -- General configuration ---------------------------------------------------

pyproject.toml

@@ -13,25 +13,24 @@ authors = [
 maintainers = [
   {name="The Scikit-HEP admins", email="scikit-hep-admins@googlegroups.com"},
 ]
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 readme = "README.md"
 license = {file="LICENSE"}
 dependencies = [
   "numpy>=1.13.3",
-  "typing-extensions>=3.7; python_version<'3.8'",
 ]
 classifiers = [
   "Development Status :: 4 - Beta",
   "Intended Audience :: Developers",
   "Intended Audience :: Science/Research",
   "License :: OSI Approved :: BSD License",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.7",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Scientific/Engineering",
   "Typing :: Typed",
 ]
@@ -58,7 +57,6 @@ docs = [
 ]
 test = [
   "pytest>=6",
-  "importlib-metadata>=1.0; python_version<'3.8'",
   "boost-histogram>=1.0",
 ]
 
@@ -70,7 +68,6 @@ build.hooks.vcs.version-file = "src/uhi/_version.py"
 [tool.pdm.dev-dependencies]
 dev = [
   "pytest>=6",
-  "importlib-metadata>=1.0; python_version<'3.8'",
   "boost-histogram>=1.0",
 ]
 
@@ -97,7 +94,7 @@ enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]
 module = ["fastjsonschema"]
 ignore_missing_imports = true
 
-[tool.ruff]
+[tool.ruff.lint]
 select = [
   "E", "F", "W", # flake8
   "B",           # flake8-bugbear
@@ -128,18 +125,12 @@ extend-ignore = [
   "E501",   # Line too long
   "PT004",  # Use underscore for non-returning fixture (use usefixture instead)
   "PT013",  # Incorrect import of pytest
+  "ISC001", # Conflicts with formatter
 ]
-typing-modules = ["mypackage._compat.typing"]
-src = ["src"]
-unfixable = [
-  "T20",   # Removes print statements
-  "F841",  # Removes unused variables
-]
-exclude = []
 flake8-unused-arguments.ignore-variadic-names = true
 isort.required-imports = ["from __future__ import annotations"]
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "tests/**" = ["T20"]
 "noxfile.py" = ["T20"]
 "tests/test_ensure.py" = ["NPY002"]

src/uhi/numpy_plottable.py

@@ -81,7 +81,7 @@ def __len__(self) -> int:
         Return the number of bins (not counting flow bins, which are ignored
         for this Protocol currently).
         """
-        return self.edges.shape[0]
+        return self.edges.shape[0]  # type: ignore[no-any-return]
 
     def __eq__(self, other: Any) -> bool:
         """
@@ -140,7 +140,7 @@ def __init__(
 
         self.kind = kind
         self.axes: Sequence[PlottableAxis] = [
-            _bin_helper(shape, b) for shape, b in zip(hist.shape, bins)  # type: ignore[arg-type]
+            _bin_helper(shape, b) for shape, b in zip(hist.shape, bins)
         ]
 
     def __repr__(self) -> str:

src/uhi/typing/plottable.py

@@ -11,20 +11,12 @@
 
 from __future__ import annotations
 
-import sys
 from collections.abc import Iterator, Sequence
-from typing import Any, Tuple, TypeVar, Union
+from typing import Any, Protocol, Tuple, TypeVar, Union, runtime_checkable
 
 # NumPy 1.20+ will work much, much better than previous versions when type checking
 import numpy as np
 
-if sys.version_info < (3, 8):
-    from typing_extensions import Protocol, runtime_checkable
-
-else:
-    from typing import Protocol, runtime_checkable
-
-
 protocol_version = (1, 2)
 
 # Known kinds of histograms. A Producer can add Kinds not defined here; a

tests/test_root.py

@@ -20,7 +20,7 @@ def test_root_th1f_convert() -> None:
     assert all(th.GetBinContent(i + 1) == approx(iv) for i, iv in enumerate(h.values()))
     assert all(
         th.GetBinError(i + 1) == approx(ie)
-        for i, ie in enumerate(np.sqrt(h.variances()))  # type: ignore[arg-type]
+        for i, ie in enumerate(np.sqrt(h.variances()))
     )
 
 
@@ -36,6 +36,6 @@ def test_root_th2f_convert() -> None:
     )
     assert all(
         th.GetBinError(i + 1, j + 1) == approx(ie)
-        for i, row in enumerate(np.sqrt(h.variances()))  # type: ignore[arg-type]
+        for i, row in enumerate(np.sqrt(h.variances()))
         for j, ie in enumerate(row)
     )

tests/test_uhi.py

@@ -1,14 +1,9 @@
 from __future__ import annotations
 
-import sys
+import importlib.metadata
 
 from uhi import __version__
 
-if sys.version_info < (3, 8):
-    import importlib_metadata as metadata
-else:
-    from importlib import metadata
-
 
 def test_version() -> None:
-    assert __version__ == metadata.version("uhi")
+    assert __version__ == importlib.metadata.version("uhi")