Drop Python 3.8 support (#534)

Now EOL:
https://discuss.python.org/t/python-3-8-is-now-officially-eol/66983 .

.github/workflows/main.yml

@@ -20,7 +20,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - 3.8
         - 3.9
         - '3.10'
         - '3.11'

.pre-commit-config.yaml

@@ -34,7 +34,7 @@ repos:
   rev: v3.17.0
   hooks:
   - id: pyupgrade
-    args: [--py38-plus]
+    args: [--py39-plus]
 - repo: https://github.com/psf/black-pre-commit-mirror
   rev: 24.10.0
   hooks:

CHANGELOG.rst

@@ -2,6 +2,8 @@
 Changelog
 =========
 
+* Drop Python 3.8 support.
+
 * Support Python 3.13.
 
 2.13.0 (2023-07-10)

README.rst

@@ -46,7 +46,7 @@ Use **pip**:
 
     python -m pip install ec2-metadata
 
-Python 3.8 to 3.13 supported.
+Python 3.9 to 3.13 supported.
 
 Why?
 ====

pyproject.toml

@@ -17,15 +17,14 @@ keywords = [
 authors = [
   { name = "Adam Johnson", email = "[email protected]" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
   "License :: OSI Approved :: MIT License",
   "Natural Language :: English",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",

src/ec2_metadata/__init__.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import datetime as dt
-import sys
 import time
 from collections.abc import Iterator
 from collections.abc import Mapping
@@ -289,13 +288,7 @@ def user_data(self) -> bytes | None:
         return resp.content
 
 
-if sys.version_info > (3, 9):
-    InstanceTagsBase = Mapping[str, str]
-else:
-    InstanceTagsBase = Mapping
-
-
-class InstanceTags(InstanceTagsBase):
+class InstanceTags(Mapping[str, str]):
     def __init__(self, names: list[str], parent: EC2Metadata) -> None:
         self._map: dict[str, str | None] = dict.fromkeys(names)
         self.parent = parent

tests/requirements/compile.py

@@ -19,7 +19,6 @@
         *sys.argv[1:],
     ]
     run = partial(subprocess.run, check=True)
-    run([*common_args, "--python", "3.8", "--output-file", "py38.txt"])
     run([*common_args, "--python", "3.9", "--output-file", "py39.txt"])
     run([*common_args, "--python", "3.10", "--output-file", "py310.txt"])
     run([*common_args, "--python", "3.11", "--output-file", "py311.txt"])

tests/test_ec2_metadata.py

@@ -1,8 +1,8 @@
 from __future__ import annotations
 
 import datetime as dt
+from collections.abc import Generator
 from typing import Any
-from typing import Generator
 
 import pytest
 import requests

tox.ini

@@ -2,7 +2,7 @@
 requires =
     tox>=4.2
 env_list =
-    py{313, 312, 311, 310, 39, 38}
+    py{313, 312, 311, 310, 39}
 
 [testenv]
 package = wheel