Drop support for Python 3.10

.github/workflows/build.yml

@@ -53,12 +53,10 @@ jobs:
     strategy:
       matrix:
         python:
-          - "3.10"
           - "3.11"
           - "3.12"
           - "3.13"
           - "3.14"
-          - "pypy-3.10"
           - "pypy-3.11"
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

CHANGELOG.md

@@ -4,6 +4,7 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased
 
+- End of Python 3.10 support
 - Necessary code changes following dev dependency update: `mypy`, `ruff`
 
 ## 0.19.1 (December 13, 2025)

pyproject.toml

@@ -27,13 +27,12 @@ classifiers = [
     "Intended Audience :: Developers",
     "Topic :: System :: Archiving :: Compression",
     "License :: OSI Approved :: BSD License",
-    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
 ]
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 dependencies = [
     "backports.zstd>=1.0.0 ; python_version<'3.14'",
     "typing-extensions>=4.13.2 ; python_version<'3.13'",
@@ -108,7 +107,7 @@ warn_unused_configs = true
 
 [tool.ruff]
 src = ["src"]
-target-version = "py310"
+target-version = "py311"
 extend-exclude = ["tests"]
 
 [tool.ruff.lint]

src/pyzstd/_seekable_zstdfile.py

@@ -5,7 +5,7 @@
 from os.path import isfile
 from struct import Struct
 import sys
-from typing import BinaryIO, ClassVar, Literal, cast
+from typing import BinaryIO, ClassVar, Literal, Self, cast
 import warnings
 
 from pyzstd import (
@@ -23,12 +23,6 @@
     from typing_extensions import Buffer
 else:
     from collections.abc import Buffer
-
-if sys.version_info < (3, 11):
-    from typing_extensions import Self
-else:
-    from typing import Self
-
 __all__ = ("SeekableFormatError", "SeekableZstdFile")
 
 _MODE_CLOSED = 0