Pyupgrades for 3.9-plus

src/cfgenvy/env.py

@@ -2,10 +2,11 @@
 
 from __future__ import annotations
 
+from collections.abc import Mapping
 from logging import getLogger
 from os import environ as osenviron
+from re import Pattern
 from re import compile as re_compile
-from typing import Mapping, Pattern
 
 from .yaml import yaml_implicit_type
 

src/cfgenvy/parser.py

@@ -3,10 +3,11 @@
 from __future__ import annotations
 
 from argparse import ArgumentParser
+from collections.abc import Mapping, Sequence
 from logging import getLogger
 from os import environ as osenviron
 from sys import argv as sysargv
-from typing import IO, Any, Mapping, Sequence
+from typing import IO, Any
 
 from .env import Env
 from .yaml import yaml_loads

src/cfgenvy/yaml.py

@@ -3,7 +3,8 @@
 from __future__ import annotations
 
 from logging import getLogger
-from typing import Any, Callable, Pattern
+from re import Pattern
+from typing import Any, Callable
 
 from yaml import dump as _yaml_dumps
 from yaml import load as _yaml_loads