1 files changed, 26 insertions, 0 deletions
diff --git a/hypervideo_dl/compat/functools.py b/hypervideo_dl/compat/functools.py
new file mode 100644
index 0000000..ec003ea
--- /dev/null
+++ b/hypervideo_dl/compat/functools.py
@@ -0,0 +1,26 @@
+# flake8: noqa: F405
+from functools import *  # noqa: F403
+
+from .compat_utils import passthrough_module
+
+passthrough_module(__name__, 'functools')
+del passthrough_module
+
+try:
+    cache  # >= 3.9
+except NameError:
+    cache = lru_cache(maxsize=None)
+
+try:
+    cached_property  # >= 3.8
+except NameError:
+    class cached_property:
+        def __init__(self, func):
+            update_wrapper(self, func)
+            self.func = func
+
+        def __get__(self, instance, _):
+            if instance is None:
+                return self
+            setattr(instance, self.func.__name__, self.func(instance))
+            return getattr(instance, self.func.__name__)