Drop Python 3.9 support

Author: jarrodmillman

.github/workflows/test.yml

@@ -13,17 +13,7 @@ jobs:
       matrix:
         os: [ubuntu, macos, windows]
         python-version:
-          [
-            "3.9",
-            "3.10",
-            "3.11",
-            "3.12",
-            "3.13",
-            "3.14",
-            "3.15-dev",
-            "pypy-3.9",
-            "pypy-3.10",
-          ]
+          ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15-dev", "pypy-3.10"]
 
     steps:
       - uses: actions/checkout@v7

pyproject.toml

@@ -4,15 +4,14 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "lazy-loader"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 authors = [{name = "Scientific Python Developers"}]
 readme = "README.md"
 license = "BSD-3-Clause"
 dynamic = ['version']
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",