Set pyupgrade minimum Python version to 3.9

Author: smkent

.pre-commit-config.yaml

@@ -42,7 +42,7 @@ repos:
     rev: v3.16.0
     hooks:
     - id: pyupgrade
-      args: ["--keep-runtime-typing"]
+      args: ["--py39-plus", "--keep-runtime-typing"]
   - repo: local
     hooks:
     - id: mypy

cookie_python/new.py

@@ -3,12 +3,11 @@
 import subprocess
 import time
 from pathlib import Path
-from typing import List, Tuple
 
 TEMPLATE_REPOSITORY_URL = "https://github.com/smkent/cookie-python"
 
 
-def parse_args() -> Tuple[argparse.Namespace, List[str]]:
+def parse_args() -> tuple[argparse.Namespace, list[str]]:
     ap = argparse.ArgumentParser()
     ap.add_argument(
         "project_dir", help="New project parent directory", type=str

hooks/post_gen_project.py

@@ -2,14 +2,13 @@
 import os
 import shutil
 import subprocess
-from typing import Dict, List
 
 import yaml
 
 TEMPLATE_ONLY_DATA = "cookiecutter_template_data"
 
 
-def _run(call: List[str], env: Dict[str, str]) -> None:
+def _run(call: list[str], env: dict[str, str]) -> None:
     subprocess.run(call, env=env).check_returncode()
 
 

tests/conftest.py

@@ -4,7 +4,7 @@
 import sys
 from pathlib import Path
 from tempfile import TemporaryDirectory
-from typing import Iterator
+from collections.abc import Iterator
 from unittest.mock import patch
 
 import pytest

tests/readme_utils.py

@@ -1,5 +1,6 @@
 from dataclasses import dataclass
-from typing import Any, Iterable, List
+from typing import Any
+from collections.abc import Iterable
 
 
 @dataclass
@@ -36,8 +37,8 @@ def all_cases(
             "enable_container_publish",
             "expected_content_file",
         ]
-        ids: List[str] = []
-        argvalues: List[Any] = []
+        ids: list[str] = []
+        argvalues: list[Any] = []
         for case in [
             ReadmeCaseParams(
                 id="no_github_user",

tests/test_manage_cookie.py

@@ -2,7 +2,7 @@
 import sys
 from pathlib import Path
 from types import SimpleNamespace
-from typing import Iterable, Iterator
+from collections.abc import Iterable, Iterator
 from unittest.mock import MagicMock, patch
 
 import github

tests/test_template.py

@@ -1,7 +1,7 @@
 import datetime
 import os
 import subprocess
-from typing import Any, Dict
+from typing import Any
 
 import pytest
 import yaml
@@ -11,7 +11,7 @@
 TEMPLATE_ONLY_DATA = "cookiecutter_template_data"
 
 
-def _bake(cookies: Any, extra_context: Dict[str, Any]) -> Any:
+def _bake(cookies: Any, extra_context: dict[str, Any]) -> Any:
     result = cookies.bake(extra_context=extra_context)
 
     assert not result.exception

{{cookiecutter.project_name}}/.pre-commit-config.yaml

@@ -41,7 +41,7 @@ repos:
     rev: v3.3.1
     hooks:
     - id: pyupgrade
-      args: ["--keep-runtime-typing"]
+      args: ["--py39-plus", "--keep-runtime-typing"]
   - repo: local
     hooks:
     - id: mypy