drop support for Python 3.9

bump minimum Python version to 3.10

Author: ndgrigorian

.github/workflows/conda-package.yml

@@ -24,7 +24,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@85880fa0301c86cca9da44039ee3bb12d3bedbfa # 0.12.1
@@ -85,7 +85,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@85880fa0301c86cca9da44039ee3bb12d3bedbfa # 0.12.1
@@ -156,7 +156,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [ubuntu-22.04]
     continue-on-error: ${{ matrix.experimental }}
@@ -252,7 +252,7 @@ jobs:
         shell: cmd /C CALL {0}
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [windows-latest]
     continue-on-error: ${{ matrix.experimental }}
@@ -423,7 +423,7 @@ jobs:
     timeout-minutes: 20
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
       - name: Download conda artifact
         uses: actions/download-artifact@v5
@@ -467,7 +467,7 @@ jobs:
     timeout-minutes: 20
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
       - name: Download artifact
         uses: actions/download-artifact@v5

.github/workflows/run-tests-from-dppy-bits.yaml

@@ -27,7 +27,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [ubuntu-22.04, ubuntu-24.04]
     continue-on-error: ${{ matrix.experimental }}
@@ -78,7 +78,7 @@ jobs:
         shell: cmd /C CALL {0}
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [windows-latest]
 

pyproject.toml

@@ -23,7 +23,6 @@ classifiers = [
   "Programming Language :: C",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
@@ -58,7 +57,7 @@ keywords = [
 license = "Apache-2.0"
 name = "dpctl"
 readme = {file = "README.md", content-type = "text/markdown"}
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 [project.optional-dependencies]
 coverage = ["Cython", "pytest", "pytest-cov", "coverage", "tomli"]