Remove support for Python 3.8

.github/workflows/ci.yml

@@ -18,7 +18,6 @@ jobs:
           - '3.11'
           - '3.10'
           - '3.9'
-          - '3.8'
     name: Python ${{ matrix.python }}
     steps:
       # Python
@@ -46,7 +45,7 @@ jobs:
       - name: Run tests
         run: pytest --ignore=tests/test_pattern_matching.py --ignore=tests/type_checking/test_result.yml
       - name: Run tests (type checking)
-        if: matrix.python != '3.8' && matrix.python != '3.9'
+        if: matrix.python != '3.9'
         # These started breaking for <= 3.9, due to the type checker using a
         # '|' for unions rather than 'Union[...]', so it's not possible to run
         # the tests without maintaining two duplicate files (one for <= 3.9 and
@@ -59,10 +58,10 @@ jobs:
       # Linters
       - name: Run flake8 (Python >= 3.10)
         run: make lint-flake
-        if: matrix.python != '3.9' && matrix.python != '3.8'
+        if: matrix.python != '3.9'
       - name: Run flake8 (Python < 3.10)
         run: make lint-flake-pre310
-        if: matrix.python == '3.9' || matrix.python == '3.8'
+        if: matrix.python == '3.9'
       - name: Run mypy
         run: make lint-mypy
 

CHANGELOG.md

@@ -15,6 +15,7 @@ Possible log types:
 
 - `[changed]` Improve type narrowing for `is_ok` and `is_err` type guards by
   replacing `typing.TypeGuard` with `typing.TypeIs` (#193)
+- `[removed]` Drop support for Python 3.8 (#180)
 
 ## [0.17.0] - 2024-06-02
 

setup.cfg

@@ -15,7 +15,6 @@ classifiers =
     Development Status :: 4 - Beta
     License :: OSI Approved :: MIT License
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -29,7 +28,7 @@ install_requires =
 package_dir =
     =src
 packages = find:
-python_requires = >=3.8
+python_requires = >=3.9
 zip_safe = True
 
 [options.packages.find]

src/result/result.py

@@ -6,19 +6,15 @@
 from warnings import warn
 from typing import (
     Any,
-    AsyncGenerator,
-    Awaitable,
     Callable,
     Final,
-    Generator,
     Generic,
-    Iterator,
     Literal,
     NoReturn,
-    Type,
     TypeVar,
     Union,
 )
+from collections.abc import AsyncGenerator, Awaitable, Generator, Iterator
 
 from typing_extensions import TypeIs
 
@@ -52,7 +48,7 @@ def __init__(self, value: T) -> None:
         self._value = value
 
     def __repr__(self) -> str:
-        return "Ok({})".format(repr(self._value))
+        return f"Ok({repr(self._value)})"
 
     def __eq__(self, other: Any) -> bool:
         return isinstance(other, Ok) and self._value == other._value
@@ -251,7 +247,7 @@ def __init__(self, value: E) -> None:
         self._value = value
 
     def __repr__(self) -> str:
-        return "Err({})".format(repr(self._value))
+        return f"Err({repr(self._value)})"
 
     def __eq__(self, other: Any) -> bool:
         return isinstance(other, Err) and self._value == other._value
@@ -352,7 +348,7 @@ def unwrap_or_else(self, op: Callable[[E], T]) -> T:
         """
         return op(self._value)
 
-    def unwrap_or_raise(self, e: Type[TBE]) -> NoReturn:
+    def unwrap_or_raise(self, e: type[TBE]) -> NoReturn:
         """
         The contained result is ``Err``, so raise the exception with the value.
         """
@@ -465,7 +461,7 @@ def result(self) -> Result[Any, Any]:
 
 
 def as_result(
-    *exceptions: Type[TBE],
+    *exceptions: type[TBE],
 ) -> Callable[[Callable[P, R]], Callable[P, Result[R, TBE]]]:
     """
     Make a decorator to turn a function into one that returns a ``Result``.
@@ -497,7 +493,7 @@ def wrapper(*args: P.args, **kwargs: P.kwargs) -> Result[R, TBE]:
 
 
 def as_async_result(
-    *exceptions: Type[TBE],
+    *exceptions: type[TBE],
 ) -> Callable[[Callable[P, Awaitable[R]]], Callable[P, Awaitable[Result[R, TBE]]]]:
     """
     Make a decorator to turn an async function into one that returns a ``Result``.
@@ -563,7 +559,7 @@ def is_err(result: Result[T, E]) -> TypeIs[Err[E]]:
     return result.is_err()
 
 
-def do(gen: Generator[Result[T, E], None, None]) -> Result[T, E]:
+def do(gen: Generator[Result[T, E]]) -> Result[T, E]:
     """Do notation for Result (syntactic sugar for sequence of `and_then()` calls).
 
 
@@ -609,7 +605,7 @@ def do(gen: Generator[Result[T, E], None, None]) -> Result[T, E]:
 
 
 async def do_async(
-    gen: Union[Generator[Result[T, E], None, None], AsyncGenerator[Result[T, E], None]]
+    gen: Generator[Result[T, E]] | AsyncGenerator[Result[T, E]]
 ) -> Result[T, E]:
     """Async version of do. Example:
 

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py312,py311,py310,py39,py38
+envlist = py312,py311,py310,py39
 
 [testenv]
 deps = -rrequirements-dev.txt