Drop support for Python 3.8 and 3.9

They are end-of-life.

Author: davidparsson

.github/workflows/ci.yml

@@ -14,15 +14,11 @@ jobs:
         os: [ubuntu-latest]
         python-version:
           [
-            3.8,
-            3.9,
             "3.10",
             "3.11",
             "3.12",
             "3.13",
             "3.14",
-            "pypy3.8",
-            "pypy3.9",
             "pypy3.10",
             "pypy3.11",
           ]

CHANGES

@@ -1,6 +1,11 @@
 Injector Change Log
 ===================
 
+0.25.0
+------
+
+- Dropped support for Python 3.8 and 3.9. Python 3.10+ is now required.
+
 0.24.0
 ------
 

README.md

@@ -72,7 +72,7 @@ The core values of Injector are:
 * Documentation: https://injector.readthedocs.org
 * Change log: https://injector.readthedocs.io/en/latest/changelog.html
 
-Injector works with CPython 3.8+ and PyPy 3 implementing Python 3.8+.
+Injector works with CPython 3.10+ and PyPy 3 implementing Python 3.10+.
 
 A Quick Example
 ---------------

docs/index.rst

@@ -21,7 +21,7 @@ PyPI (installable, stable distributions): https://pypi.org/project/injector. You
 
     pip install injector
 
-Injector works with CPython 3.6+ and PyPy 3 implementing Python 3.6+.
+Injector works with CPython 3.10+ and PyPy 3 implementing Python 3.10+.
 
 Introduction
 ------------

injector/__init__.py

@@ -24,7 +24,6 @@
 from abc import ABCMeta, abstractmethod
 from dataclasses import dataclass
 from typing import (
-    TYPE_CHECKING,
     Any,
     Callable,
     Collection,
@@ -45,23 +44,7 @@
     overload,
 )
 
-try:
-    from typing import NoReturn
-except ImportError:
-    from typing_extensions import NoReturn
-
-# This is a messy, type-wise, because we not only have two potentially conflicting imports here
-# The easiest way to make mypy happy here is to tell it the versions from typing_extensions are
-# canonical. Since this typing_extensions import is only for mypy it'll work even without
-# typing_extensions actually installed so all's good.
-if TYPE_CHECKING:
-    from typing_extensions import Annotated, _AnnotatedAlias, get_type_hints
-else:
-    # Ignoring errors here as typing_extensions stub doesn't know about those things yet
-    try:
-        from typing import Annotated, _AnnotatedAlias, get_type_hints
-    except ImportError:
-        from typing_extensions import Annotated, _AnnotatedAlias, get_type_hints
+from typing import Annotated, NoReturn, _AnnotatedAlias, get_type_hints  # type: ignore[attr-defined]
 
 
 __author__ = 'Alec Thomas <alec@swapoff.org>'
@@ -108,7 +91,7 @@ def wrapper(*args: Any, **kwargs: Any) -> Any:
 InjectT = TypeVar('InjectT')
 Inject = Annotated[InjectT, _inject_marker]
 """An experimental way to declare injectable dependencies utilizing a `PEP 593`_ implementation
-in Python 3.9 and backported to Python 3.7+ in `typing_extensions`.
+in Python 3.9.
 
 Those two declarations are equivalent::
 
@@ -136,19 +119,18 @@ def fun(t: Inject[SomeType], s: SomeOtherType) -> None:
         A way to inspect how various injection declarations interact with each other.
 
 .. versionadded:: 0.18.0
-.. note:: Requires Python 3.7+.
+.. note:: Requires Python 3.9+.
 .. note::
 
     If you're using mypy you need the version 0.750 or newer to fully type-check code using this
     construct.
 
 .. _PEP 593: https://www.python.org/dev/peps/pep-0593/
-.. _typing_extensions: https://pypi.org/project/typing-extensions/
 """
 
 NoInject = Annotated[InjectT, _noinject_marker]
 """An experimental way to declare noninjectable dependencies utilizing a `PEP 593`_ implementation
-in Python 3.9 and backported to Python 3.7+ in `typing_extensions`.
+in Python 3.9.
 
 Since :func:`inject` declares all function's parameters to be injectable there needs to be a way
 to opt out of it. This has been provided by :func:`noninjectable` but `noninjectable` suffers from
@@ -175,14 +157,13 @@ def fun(a: TypeA, b: NoInject[TypeB]) -> None:
         A way to inspect how various injection declarations interact with each other.
 
 .. versionadded:: 0.18.0
-.. note:: Requires Python 3.7+.
+.. note:: Requires Python 3.9+.
 .. note::
 
     If you're using mypy you need the version 0.750 or newer to fully type-check code using this
     construct.
 
 .. _PEP 593: https://www.python.org/dev/peps/pep-0593/
-.. _typing_extensions: https://pypi.org/project/typing-extensions/
 """
 
 
@@ -791,13 +772,7 @@ def _ensure_iterable(item_or_list: Union[T, List[T]]) -> List[T]:
 
 
 def _punch_through_alias(type_: Any) -> type:
-    if (
-        sys.version_info < (3, 10)
-        and getattr(type_, '__qualname__', '') == 'NewType.<locals>.new_type'
-        or sys.version_info >= (3, 10)
-        and type(type_).__module__ == 'typing'
-        and type(type_).__name__ == 'NewType'
-    ):
+    if type(type_).__module__ == 'typing' and type(type_).__name__ == 'NewType':
         return type_.__supertype__
     elif isinstance(type_, _AnnotatedAlias) and getattr(type_, '__metadata__', None) is not None:
         return type_.__origin__

injector_test.py

@@ -11,18 +11,14 @@
 """Functional tests for the "Injector" dependency injection framework."""
 
 import abc
-import sys
 import threading
 import traceback
 import warnings
 from contextlib import contextmanager
 from dataclasses import dataclass
 from typing import Any, Literal, NewType, Optional, Union
 
-if sys.version_info >= (3, 9):
-    from typing import Annotated
-else:
-    from typing_extensions import Annotated
+from typing import Annotated
 
 from typing import Dict, List, NewType
 
@@ -2031,7 +2027,6 @@ def function(a: Inject[Inject[int]]) -> None:
 
 
 # Tests https://github.com/alecthomas/injector/issues/202
-@pytest.mark.skipif(sys.version_info < (3, 10), reason="Requires Python 3.10+")
 def test_get_bindings_for_pep_604():
     @inject
     def function1(a: int | None) -> None:
@@ -2255,7 +2250,6 @@ def provide_second(self) -> Annotated[str, 'second']:
 
 
 # Test for https://github.com/alecthomas/injector/issues/303
-@pytest.mark.skipif(sys.version_info < (3, 10), reason="Requires Python 3.10+")
 def test_can_inject_dataclass_with_literal_value():
     @dataclass(slots=True)
     class ServiceConfig:

pyproject.toml

@@ -1,4 +1,4 @@
 [tool.black]
 line-length = 110
-target_version = ['py36', 'py37']
+target_version = ['py310']
 skip_string_normalization = true

requirements-dev.in

@@ -11,4 +11,3 @@ pytest-cov>=2.5.1
 mypy;implementation_name=="cpython"
 black;implementation_name=="cpython"
 check-manifest
-typing_extensions>=3.7.4;python_version<"3.9"

requirements.txt

@@ -1 +0,0 @@
-typing_extensions>=3.7.4;python_version<"3.9"