feat: drop support for Python3.8

.github/workflows/python-app.yml

@@ -11,10 +11,10 @@ jobs:
     strategy:
       max-parallel: 8
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13-dev", "pypy3.10"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.10"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
@@ -46,7 +46,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"

.pre-commit-config.yaml

@@ -3,18 +3,18 @@
 # To update: run `pre-commit autoupdate`
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.6.0
+    rev: v5.0.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: check-yaml
       - id: check-toml
       - id: check-added-large-files
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.6.8
+    rev: v0.9.8
     hooks:
       - id: ruff
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.11.2
+    rev: v1.15.0
     hooks:
       - id: mypy

CHANGELOG.md

@@ -6,6 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Changed
+- Drop support for Python3.8
 - Switch completely to [just](https://just.systems/) for development tasts, remove nox. Rely on Github actions matrix of python versions for testing across all supported python versions.
 - Remove black, rely on ruff for formatting.
 

iso8601/iso8601.py

@@ -7,10 +7,10 @@
 >>>
 
 """
+from __future__ import annotations
 
 import datetime
 import re
-import typing
 from decimal import Decimal
 
 __all__ = ["parse_date", "ParseError", "UTC", "FixedOffset"]
@@ -77,19 +77,19 @@ def FixedOffset(
 
 
 def parse_timezone(
-    matches: typing.Dict[str, str],
-    default_timezone: typing.Optional[datetime.timezone] = UTC,
-) -> typing.Optional[datetime.timezone]:
+    matches: dict[str, str],
+    default_timezone: datetime.timezone | None = UTC,
+) -> datetime.timezone | None:
     """Parses ISO 8601 time zone specs into tzinfo offsets"""
-    tz = matches.get("timezone", None)
+    tz = matches.get("timezone")
     if tz == "Z":
         return UTC
     # This isn't strictly correct, but it's common to encounter dates without
     # timezones so I'll assume the default (which defaults to UTC).
     # Addresses issue 4.
     if tz is None:
         return default_timezone
-    sign = matches.get("tz_sign", None)
+    sign = matches.get("tz_sign")
     hours = int(matches.get("tz_hour", 0))
     minutes = int(matches.get("tz_minute", 0))
     description = f"{sign}{hours:02d}:{minutes:02d}"
@@ -100,7 +100,7 @@ def parse_timezone(
 
 
 def parse_date(
-    datestring: str, default_timezone: typing.Optional[datetime.timezone] = UTC
+    datestring: str, default_timezone: datetime.timezone | None = UTC
 ) -> datetime.datetime:
     """Parses ISO 8601 dates into datetime objects
 
@@ -128,7 +128,7 @@ def parse_date(
 
     # Drop any Nones from the regex matches
     # TODO: check if there's a way to omit results in regexes
-    groups: typing.Dict[str, str] = {
+    groups: dict[str, str] = {
         k: v for k, v in m.groupdict().items() if v is not None
     }