From 8cf26dbc9de074bdc0552db00c033aa9fadcd713 Mon Sep 17 00:00:00 2001
From: Edward Amor <edward.amor3@gmail.com>
Date: Thu, 21 Oct 2021 13:11:21 -0400
Subject: [PATCH] fix: <py38 import cached_property in global_context.py

---
 vyper/old_codegen/global_context.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/vyper/old_codegen/global_context.py b/vyper/old_codegen/global_context.py
index 9ea12d31260..f96d229fb83 100644
--- a/vyper/old_codegen/global_context.py
+++ b/vyper/old_codegen/global_context.py
@@ -1,4 +1,3 @@
-from functools import cached_property
 from typing import Optional
 
 from vyper import ast as vy_ast
@@ -7,6 +6,12 @@
 from vyper.old_codegen.types import InterfaceType, parse_type
 from vyper.typing import InterfaceImports
 
+try:
+    # available py3.8+
+    from functools import cached_property
+except ImportError:
+    from cached_property import cached_property  # type: ignore
+
 
 # Datatype to store all global context information.
 class GlobalContext: