From e5911754423e6f25e4f0200563ad9b6b0730fe85 Mon Sep 17 00:00:00 2001
From: Victor Skvortsov <vds003@gmail.com>
Date: Tue, 5 Mar 2024 18:32:40 +0500
Subject: [PATCH] Support Python 3.8 (#6)

---
 cached_classproperty/__init__.py | 10 +++++-----
 tests/test_classproperty.py      |  5 ++++-
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/cached_classproperty/__init__.py b/cached_classproperty/__init__.py
index 509542b..7524116 100644
--- a/cached_classproperty/__init__.py
+++ b/cached_classproperty/__init__.py
@@ -1,6 +1,6 @@
 import importlib.metadata
 from _thread import RLock  # type: ignore
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
 
 __version__ = importlib.metadata.version("cached_classproperty")
 
@@ -17,12 +17,12 @@
     P = ParamSpec("P")
 
     def cached_staticproperty(
-        func: Callable[Concatenate[P], T], attrname: str | None = None
+        func: Callable[Concatenate[P], T], attrname: Optional[str] = None
     ) -> T:
         ...
 
     def cached_classproperty(
-        func: Callable[Concatenate[Any, P], T], attrname: str | None = None
+        func: Callable[Concatenate[Any, P], T], attrname: Optional[str] = None
     ) -> T:
         ...
 
@@ -31,7 +31,7 @@ def cached_classproperty(
     class cached_staticproperty:
         __slots__ = ("func", "attrname", "lock")
 
-        def __init__(self, func, attrname: str | None = None):
+        def __init__(self, func, attrname: Optional[str] = None):
             self.func = func
             self.attrname = attrname
             self.lock = RLock()
@@ -72,7 +72,7 @@ def __get__(self, instance, owner=None):
     class cached_classproperty:
         __slots__ = ("func", "attrname", "lock", "owner", "_cached_value", "_weak_dict")
 
-        def __init__(self, func, attrname: str | None = None):
+        def __init__(self, func, attrname: Optional[str] = None):
             self.func = func
             self.attrname = attrname
             self.lock = RLock()
diff --git a/tests/test_classproperty.py b/tests/test_classproperty.py
index e4a149b..6156347 100644
--- a/tests/test_classproperty.py
+++ b/tests/test_classproperty.py
@@ -155,11 +155,11 @@ class Superclass:
         @cached_classproperty
         def my_cached_classproperty(cls):
             return ("Superclass",)
+
         @classmethod
         def my_classmethod(cls):
             return ("Superclass",)
 
-
     class Subclass1(Superclass):
         @cached_classproperty
         def my_cached_classproperty(cls):
@@ -167,6 +167,7 @@ def my_cached_classproperty(cls):
                 *super().my_cached_classproperty,
                 "Subclass1",
             )
+
         @classmethod
         def my_classmethod(cls):
             return (
@@ -181,6 +182,7 @@ def my_cached_classproperty(cls):
                 *super().my_cached_classproperty,
                 "Subclass2",
             )
+
         @classmethod
         def my_classmethod(cls):
             return (
@@ -195,6 +197,7 @@ def my_cached_classproperty(cls):
                 *super().my_cached_classproperty,
                 "Finalclass",
             )
+
         @classmethod
         def my_classmethod(cls):
             return (