Update dependencies and require Python 3.9+, prepare release 0.19.0 (#505)

* Update dependencies and require Python 3.9+, prepare release 0.19.0

* Update CHANGELOG

* style: pre-commit fixes

* Good catch from ruff on unnecessary  'if sys.version_info < (3, 9)' at this point

* style: pre-commit fixes

* Simplify typing given that we now require Python >= 3.9

---------

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

Author: eduardo-rodrigues

.github/workflows/ci.yml

@@ -35,11 +35,11 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.8', '3.10', '3.13']
+        python-version: ['3.9', '3.10', '3.13']
         include:
           - {os: macos-13, python-version: '3.9'}
           - {os: macos-latest, python-version: '3.13'}
-          - {os: windows-latest, python-version: '3.8'}
+          - {os: windows-latest, python-version: '3.9'}
           - {os: windows-latest, python-version: '3.13'}
 
     steps:

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## Version 0.19.0 (2025-07-04)
+
+* Dependencies:
+  - Package dependent on ``Particle`` >= 0.25.4 and `hepunits` >= 2.3.5 to adapt to change in `Particle`.
+  - Removed support for Python 3.8.
+* CI and tests:
+  - Updates to pre-commit hooks and CI YAML files.
+
 ## Version 0.18.6 (2025-01-17)
 
 * CI and tests:

README.md

@@ -34,8 +34,8 @@ pip install decaylanguage
 
 You can use a virtual environment through pipenv or with `--user` if you know
 what those are. [Python
-3.8+](http://docs.python-guide.org/en/latest/starting/installation) supported
-(see version 0.12 for Python 2 & 3.5 support, 0.14 for Python 3.6 support, 0.18 for Python 3.7 support).
+3.9+](http://docs.python-guide.org/en/latest/starting/installation) supported
+(see version 0.14 for Python 3.6 support, 0.18 for Python 3.7 and 3.8 support).
 
 <details><summary>Dependencies: (click to expand)</summary><p>
 

pyproject.toml

@@ -9,7 +9,7 @@ build-backend = "hatchling.build"
 name = "decaylanguage"
 description = "A language to describe, manipulate and convert particle decays"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 authors = [
     { name = "Eduardo Rodrigues", email = "eduardo.rodrigues@cern.ch" },
     { name = "Henry Schreiner", email = "henryfs@princeton.edu" },
@@ -33,7 +33,6 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -48,8 +47,8 @@ dependencies = [
     "lark>=1.0.0",
     "numpy>=1.12",
     "pandas>=0.22",
-    "particle>=0.22.0",
-    "hepunits>=2.0.0",
+    "particle>=0.25.4",
+    "hepunits>=2.3.5",
     "plumbum>=1.7.0",
 ]
 dynamic = ["version"]

src/decaylanguage/data/__init__.py

@@ -1,12 +1,6 @@
 from __future__ import annotations
 
-import sys
-
-if sys.version_info < (3, 9):
-    import importlib_resources as resources
-else:
-    from importlib import resources
-
+from importlib import resources
 
 __all__ = ["basepath"]
 

src/decaylanguage/dec/dec.py

@@ -42,10 +42,11 @@
 import os
 import re
 import warnings
+from collections.abc import Iterable
 from io import StringIO
 from itertools import chain, zip_longest
 from pathlib import Path
-from typing import Any, Callable, Iterable
+from typing import Any, Callable
 
 from hepunits import GeV
 from lark import Lark, Token, Transformer, Tree, Visitor

src/decaylanguage/decay/decay.py

@@ -8,10 +8,10 @@
 
 import typing
 from collections import Counter
-from collections.abc import Collection, Sequence
+from collections.abc import Collection, Iterable, Iterator, Sequence
 from copy import deepcopy
 from itertools import product
-from typing import TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, TypedDict
+from typing import TYPE_CHECKING, Any, TypedDict
 
 from particle import PDGID, ParticleNotFound
 from particle.converters import EvtGenName2PDGIDBiMap
@@ -33,7 +33,7 @@ class DecayModeDict(TypedDict):
     model_params: str | Sequence[str | Any]
 
 
-DecayChainDict = Dict[str, List[DecayModeDict]]
+DecayChainDict = dict[str, list[DecayModeDict]]
 
 
 class DaughtersDict(CounterStr):
@@ -952,8 +952,8 @@ def to_dict(self) -> DecayChainDict:
             'model_params': ''}]}
         """
 
-        # Ideally this would be a recursive type, DecayDict = Dict[str, list[str | DecayDict]]
-        DecayDict = Dict[str, List[Any]]
+        # Ideally this would be a recursive type, DecayDict = dict[str, list[str | DecayDict]]
+        DecayDict = dict[str, list[Any]]
 
         def recursively_replace(mother: str) -> DecayDict:
             dm = self.decays[mother].to_dict()

src/decaylanguage/utils/utilities.py

@@ -6,8 +6,10 @@
 from __future__ import annotations
 
 import string
+from collections.abc import Iterator
 from copy import copy
-from typing import Any, ClassVar, Iterator, Pattern
+from re import Pattern
+from typing import Any, ClassVar
 
 
 def iter_flatten(iterable: list[str] | tuple[str, ...]) -> Iterator[str]: