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.venv/lib/python3.10/site-packages/pip/_internal/utils/models.py

@@ -1,16 +1,19 @@
 """Utilities for defining models
 """
+from __future__ import annotations
 
 import operator
-from typing import Any, Callable, Type
+from typing import Any
+from typing import Callable
+from typing import Type
 
 
 class KeyBasedCompareMixin:
     """Provides comparison capabilities that is based on a key"""
 
-    __slots__ = ["_compare_key", "_defining_class"]
+    __slots__ = ['_compare_key', '_defining_class']
 
-    def __init__(self, key: Any, defining_class: Type["KeyBasedCompareMixin"]) -> None:
+    def __init__(self, key: Any, defining_class: type[KeyBasedCompareMixin]) -> None:
         self._compare_key = key
         self._defining_class = defining_class