Update project to require Python 3.10

.github/workflows/continuous_integration.yaml

@@ -39,10 +39,10 @@ jobs:
         strategy:
           fail-fast: false
           matrix:
-            python-version: [3.9, 3.13]
+            python-version: ["3.10", "3.14"]
             include-extras: [true]
             include:
-              - python-version: 3.9
+              - python-version: "3.10"
                 include-extras: false
 
         steps:

.python-version

@@ -1 +1 @@
-3.9
+3.10

CHANGELOG.md

@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 
 ## [0.8.0]
 - 🆕 Used integration with toolit to make snappylapy commands available for AI coding assistants
+- ❗Deprecated support for Python 3.9. Snappylapy now requires Python 3.10 or higher. Add python 3.14 to the test matrix.
 
 ## [0.7.0] - 2025-08-27
 - 🆕 Added csv serializer for pandas dataframes for making the deserialization work on windows and make a more suitable and human readable format.

pyproject.toml

@@ -14,7 +14,6 @@ classifiers = [
     "Topic :: Software Development :: Testing",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -37,7 +36,6 @@ dependencies = [
     "pytest>=7.0",
     "jsonpickle>=1.0",
     "typer",
-    "typing-extensions ; python_full_version == '3.9.*'",
     "levenshtein>=0.27.1",
     "toolit>=0.5.0",
 ]

ruff.toml

@@ -2,8 +2,8 @@
 line-length = 120
 indent-width = 4
 
-# Assume Python 3.9
-target-version = "py39"
+# Assume Python 3.10
+target-version = "py310"
 output-format = "concise"
 
 [lint]

snappylapy/expectation_classes/expect_dataframe.py

@@ -2,16 +2,11 @@
 
 from __future__ import annotations
 
-import sys
 from .base_snapshot import BaseSnapshot
+from collections.abc import Callable
 from functools import wraps
 from snappylapy.serialization import PandasCsvSerializer
-from typing import TYPE_CHECKING, Any, Callable, TypeVar, cast
-
-if sys.version_info >= (3, 10):
-    from typing import TypeAlias
-else:
-    from typing_extensions import TypeAlias
+from typing import TYPE_CHECKING, Any, TypeAlias, TypeVar, cast
 
 if TYPE_CHECKING:
     import pandas as pd

tox.ini

@@ -2,7 +2,7 @@
 ; tox==3.28.0
 ; tox-conda==0.10.2
 [tox]
-envlist = py39-pytest{3x,4x,5x,6x,7x,8x},py39-jsonpickle{2x,3x,4x}
+envlist = py310-pytest{3x,4x,5x,6x,7x,8x},py310-jsonpickle{2x,3x,4x}
 
 [testenv]
 description = run the tests with pytest
@@ -24,5 +24,5 @@ commands =
     poetry run pytest
     poetry run mypy snappylapy
 
-[testenv:py39]
-basepython = python3.9
+[testenv:py310]
+basepython = python3.10