fix: drop python 3.8; it's EOL

.github/workflows/ci.yml

@@ -38,7 +38,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
@@ -65,7 +64,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
@@ -105,7 +103,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.8.13
+          python-version: 3.9
 
       - uses: astral-sh/setup-uv@v6
 

CONTRIBUTING.md

@@ -207,7 +207,7 @@ nox -s tests        # test with all extra dependencies on all available Python v
 nox -s tests        # run doctests on all available Python versions
 nox -s coverage     # run the tests session and generate a coverage report on all available Python versions
 nox -s notebooks    # test notebooks on the default Python version
-nox -s disassemble  # check compute functions on Python 3.8
+nox -s disassemble  # check compute functions on Python 3.9
 ```
 
 ### Building documentation with nox

noxfile.py

@@ -8,7 +8,7 @@
 nox.needs_version = ">=2024.4.15"
 nox.options.default_venv_backend = "uv|virtualenv"
 
-ALL_PYTHON = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+ALL_PYTHON = ["3.9", "3.10", "3.11", "3.12", "3.13"]
 DIR = Path(__file__).parent.resolve()
 
 
@@ -90,7 +90,7 @@ def build(session: nox.Session) -> None:
     session.run("python", "-m", "build")
 
 
-@nox.session(reuse_venv=True, python="3.8", default=False)
+@nox.session(reuse_venv=True, python="3.9", default=False)
 def disassemble(session: nox.Session) -> None:
     """Disassemble run."""
     session.install("-e", ".[test-extras]")

pyproject.toml

@@ -18,7 +18,7 @@ maintainers = [
 authors = [
   { name = "Jim Pivarski, Henry Schreiner, Eduardo Rodrigues", email = "[email protected]" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
@@ -27,7 +27,6 @@ classifiers = [
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "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",
@@ -87,7 +86,7 @@ optional-dependencies.test = [
 optional-dependencies.test-extras = [
   "dask_awkward",
   "spark-parser",
-  'uncompyle6; python_version == "3.8"',
+  'uncompyle6; python_version == "3.9"',
 ]
 urls."Bug Tracker" = "https://github.com/scikit-hep/vector/issues"
 urls.Changelog = "https://vector.readthedocs.io/en/latest/changelog.html"
@@ -163,7 +162,7 @@ isort.required-imports = [
 ]
 
 [tool.pylint]
-master.py-version = "3.8"
+master.py-version = "3.9"
 reports.output-format = "colorized"
 similarities.ignore-imports = "yes"
 master.jobs = "0"
@@ -253,7 +252,7 @@ filterwarnings = [
 files = [
   "src/vector",
 ]
-python_version = "3.8"
+python_version = "3.9"
 strict = true
 warn_return_any = false
 enable_error_code = [

tests/test_compute_features.py

@@ -17,7 +17,7 @@
 reason to exclude ``if`` statements. Loops are even more problematic.
 
 This suite of tests statically analyzes all of the compute functions by decompiling
-their bytecode with uncompyle6 (on Python 3.8; will have to be modified slightly
+their bytecode with uncompyle6 (on Python 3.9; will have to be modified slightly
 every few years). Some compute functions are dynamically generated, so they don't
 all have an AST to inspect.