python: utils: 'typing.Pattern' compatibility fix

python/knot_resolver/datamodel/types/base_types.py

@@ -1,8 +1,7 @@
 import re
 from typing import Any, Dict, Type
 
-from typing_extensions import Pattern
-
+from knot_resolver.utils.compat.typing import Pattern
 from knot_resolver.utils.modeling import BaseValueType
 
 

python/knot_resolver/utils/compat/__init__.py

@@ -1,3 +1,3 @@
-from . import asyncio
+from . import asyncio, typing
 
-__all__ = ["asyncio"]
+__all__ = ["asyncio", "typing"]

python/knot_resolver/utils/compat/typing.py

@@ -0,0 +1,8 @@
+# The 'typing.Pattern' is deprecated since python 3.8 and is removed in version 3.12.
+# https://docs.python.org/3.9/library/typing.html#typing.Pattern
+try:
+    from typing import Pattern
+except ImportError:
+    from re import Pattern
+
+__all__ = ["Pattern"]