Drop Python 3.8 support

pyproject.toml

@@ -7,7 +7,7 @@ name = "yut23-utils"
 dynamic = ["version"]
 description = 'Common code I find myself reaching for from multiple different repositories.'
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = "BSD-3-Clause"
 keywords = []
 authors = [
@@ -16,7 +16,6 @@ authors = [
 classifiers = [
   "Development Status :: 4 - Beta",
   "Programming Language :: Python",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -53,7 +52,7 @@ cov = [
 ]
 
 [[tool.hatch.envs.all.matrix]]
-python = ["3.8", "3.9", "3.10", "3.11", "3.12"]
+python = ["3.9", "3.10", "3.11", "3.12"]
 
 [tool.hatch.envs.lint]
 detached = true
@@ -80,12 +79,12 @@ all = [
 ]
 
 [tool.black]
-target-version = ["py38"]
+target-version = ["py39"]
 line-length = 88
 skip-string-normalization = false
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py39"
 line-length = 88
 select = [
   "A",

tests/test_fp.py

@@ -4,7 +4,6 @@
 
 import math
 import sys
-from typing import Tuple
 
 import pytest
 from hypothesis import assume, example, given, note
@@ -38,7 +37,7 @@ def test_int_to_float(x_int: int) -> None:
 
 
 @st.composite
-def float_pairs(draw: st.DrawFn, max_ulps: int) -> Tuple[float, float, int]:
+def float_pairs(draw: st.DrawFn, max_ulps: int) -> tuple[float, float, int]:
     a = draw(st.floats(allow_nan=False, allow_infinity=False))
     ulps = draw(st.integers(min_value=-max_ulps, max_value=max_ulps))
 
@@ -57,7 +56,7 @@ def float_pairs(draw: st.DrawFn, max_ulps: int) -> Tuple[float, float, int]:
 @example((5e-324, 0.0, -1))
 @example((5e-324, -0.0, -1))
 @example((-5e-324, 5e-324, 2))
-def test_ulp_diff(args: Tuple[float, float, int]) -> None:
+def test_ulp_diff(args: tuple[float, float, int]) -> None:
     a, b, ulps = args
     assert ulp_diff(a, b) == ulps
 
@@ -81,7 +80,7 @@ def test_ulp_diff_errors(a: float, b: float) -> None:
 
 @given(float_pairs(max_ulps=100))
 @example((-5e-324, 5e-324, 2))
-def test_compare_ulp(args: Tuple[float, float, int]) -> None:
+def test_compare_ulp(args: tuple[float, float, int]) -> None:
     a, b, ulps = args
     assert compare_ulp(a, b, abs(ulps))
     if abs(ulps) > 0: