Drop Python 3.9 support

- Remove Python 3.9 from all CI test matrices
- Update requires-python from >=3.8 to >=3.10
- Update tool configurations (isort, ruff) to target Python 3.10
- Update CI workflows to test on Python 3.10 (minimum) and 3.13 (maximum)

Author: claude

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: "3.10"
           cache: "pip"
       - uses: pre-commit/action@v3.0.1
 
@@ -17,7 +17,7 @@ jobs:
     name: Pylint test
     strategy:
       matrix:
-        python-version: ["3.9", "3.12", "3.13"]
+        python-version: ["3.10", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: ["3.9", "3.12", "3.13"]
+        version: ["3.10", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -58,13 +58,11 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            python-version: 3.9
+            python-version: "3.10"
           - os: windows-latest
-            python-version: 3.9
+            python-version: "3.10"
           - os: ubuntu-latest
-            python-version: 3.12
-          - os: ubuntu-latest
-            python-version: 3.13
+            python-version: "3.13"
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repo
@@ -92,7 +90,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: "3.10"
           cache: "pip"
 
       - name: Install dependencies

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: "3.10"
           cache: "pip"
 
       - name: Install dependencies

pyproject.toml

@@ -4,7 +4,7 @@ version = "0.2.10"
 description = ""
 authors = [{ name = "Kili Technology", email = "contact@kili-technology.com" }]
 license = { file = "LICENSE.txt" }
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 readme = "README.md"
 dependencies = [
   "typing-extensions >= 4.1.0, < 5.0.0"
@@ -62,11 +62,11 @@ exclude = '''
 
 [tool.isort]
 profile = "black"
-py_version = 38
+py_version = 310
 
 [tool.ruff]
 line-length = 100
-target-version = "py38"
+target-version = "py310"
 ignore = ["E501"]
 
 [tool.ruff.pydocstyle]