chore: remove Python 3.7 support (#355)

* chore: remove Python 3.7 support

numba 0.57 requires Python 3.8

* Update README

* style: pre-commit fixes

* fix imports

* Update README.md

* Bump ruff's target version

---------

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

.github/workflows/ci.yml

@@ -35,7 +35,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
@@ -64,7 +63,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
@@ -96,7 +94,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"

README.md

@@ -17,7 +17,7 @@
 [![LICENSE][license-badge]][license-link]
 [![Scikit-HEP][sk-badge]][sk-link]
 
-Vector is a Python 3.7+ library for 2D, 3D, and [Lorentz vectors](https://en.wikipedia.org/wiki/Special_relativity#Physics_in_spacetime), especially _arrays of vectors_, to solve common physics problems in a NumPy-like way.
+Vector is a Python 3.8+ library (Python 3.6 and 3.7 supported till `v0.9.0` and `v1.0.0`, respectively) for 2D, 3D, and [Lorentz vectors](https://en.wikipedia.org/wiki/Special_relativity#Physics_in_spacetime), especially _arrays of vectors_, to solve common physics problems in a NumPy-like way.
 
 Main features of Vector:
 

docs/changelog.md

@@ -10,8 +10,12 @@
 
 #### Maintenance
 
+- chore: remove Python `3.7` support [#355][]
+- chore: use trusted publisher deployment [#354][]
 - chore: replace custom definition of np.isclose with numba's np.isclose [#348][]
 
+[#355]: https://github.com/scikit-hep/vector/pull/355
+[#354]: https://github.com/scikit-hep/vector/pull/354
 [#347]: https://github.com/scikit-hep/vector/pull/347
 [#348]: https://github.com/scikit-hep/vector/pull/348
 

docs/index.rst

@@ -12,7 +12,7 @@
 Overview
 --------
 
-Vector is a Python 3.7+ library for 2D, 3D, and `Lorentz vectors <https://en.wikipedia.org/wiki/Special_relativity#Physics_in_spacetime>`_, especially *arrays of vectors*, to solve common physics problems in a NumPy-like way.
+Vector is a Python 3.8+ library (Python 3.6 and 3.7 supported till ``v0.9.0`` and ``v1.0.0``, respectively) for 2D, 3D, and `Lorentz vectors <https://en.wikipedia.org/wiki/Special_relativity#Physics_in_spacetime>`_, especially *arrays of vectors*, to solve common physics problems in a NumPy-like way.
 
 Main features of Vector:
 

noxfile.py

@@ -4,7 +4,7 @@
 
 import nox
 
-ALL_PYTHONS = ["3.7", "3.8", "3.9", "3.10", "3.11"]
+ALL_PYTHONS = ["3.8", "3.9", "3.10", "3.11"]
 
 nox.options.sessions = ["lint", "tests", "doctests"]
 

pyproject.toml

@@ -15,7 +15,7 @@ keywords = [
 license = "BSD-3-Clause"
 maintainers = [ {name = "The Scikit-HEP admins", email = "scikit-hep-admins@googlegroups.com"} ]
 authors = [ {name = "Jim Pivarski, Henry Schreiner, Eduardo Rodrigues", email = "eduardo.rodrigues@cern.ch"} ]
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
@@ -24,7 +24,6 @@ classifiers = [
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.7",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
@@ -39,18 +38,16 @@ dynamic = [
   "version",
 ]
 dependencies = [
-  'importlib-metadata>=0.22; python_version < "3.8"',
   "numpy>=1.13.3",
   "packaging>=19",
-  'typing-extensions; python_version < "3.8"',
 ]
 [project.optional-dependencies]
 awkward = [
   "awkward>=1.2",
 ]
 dev = [
   "awkward>=1.2",
-  'numba>=0.57; python_version >= "3.8"',
+  "numba>=0.57",
   "papermill>=2.4",
   "pytest>=6",
   "pytest-cov>=3",
@@ -110,7 +107,7 @@ extend-ignore = [
   "PLR",   # Design related pylint codes
   "E501",  # Line too long
 ]
-target-version = "py37"
+target-version = "py38"
 typing-modules = ["vector._typeutils"]
 src = ["src"]
 unfixable = [
@@ -175,7 +172,7 @@ disallow_untyped_defs = false
 disallow_untyped_calls = false
 
 [tool.pylint]
-master.py-version = "3.7"
+master.py-version = "3.8"
 reports.output-format = "colorized"
 similarities.ignore-imports = "yes"
 master.jobs = "0"

src/vector/__init__.py

@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-import sys
+import importlib.metadata
 import typing
 
 import packaging.version
@@ -57,14 +57,9 @@
 )
 from vector.version import version as __version__
 
-if sys.version_info < (3, 8):
-    import importlib_metadata
-else:
-    import importlib.metadata as importlib_metadata
-
 
 def _import_awkward() -> None:
-    awk_version = packaging.version.Version(importlib_metadata.version("awkward"))
+    awk_version = packaging.version.Version(importlib.metadata.version("awkward"))
     if awk_version < packaging.version.Version("1.2.0rc5"):
         # the only context users will see this message is if they're trying to use vector.awk
         # VectorAwkward is still set to None
@@ -75,9 +70,9 @@ def _import_awkward() -> None:
 _is_awkward_v2: bool | None
 try:
     _is_awkward_v2 = packaging.version.Version(
-        importlib_metadata.version("awkward")
+        importlib.metadata.version("awkward")
     ) >= packaging.version.Version("2.0.0rc1")
-except importlib_metadata.PackageNotFoundError:
+except importlib.metadata.PackageNotFoundError:
     _is_awkward_v2 = None
 try:
     import awkward

src/vector/_typeutils.py

@@ -5,14 +5,8 @@
 
 from __future__ import annotations
 
-import sys
 import typing
-
-if sys.version_info < (3, 8):
-    from typing_extensions import Protocol, TypedDict
-else:
-    from typing import Protocol, TypedDict
-
+from typing import Protocol, TypedDict
 
 __all__ = [
     "Protocol",

tests/backends/test_awkward.py

@@ -5,26 +5,21 @@
 
 from __future__ import annotations
 
-import sys
+import importlib.metadata
 
 import packaging.version
 import pytest
 
 import vector
 
-if sys.version_info < (3, 8):
-    import importlib_metadata
-else:
-    import importlib.metadata as importlib_metadata
-
 ak = pytest.importorskip("awkward")
 
 pytestmark = pytest.mark.awkward
 
 
 # Record reducers were added before awkward==2.2.3, but had some bugs.
 awkward_without_record_reducers = packaging.version.Version(
-    importlib_metadata.version("awkward")
+    importlib.metadata.version("awkward")
 ) < packaging.version.Version("2.2.3")