From 9c63734705bd23eae6257b23621cf49fc5649ae9 Mon Sep 17 00:00:00 2001
From: Erez Sh <erezshin@gmail.com>
Date: Sun, 29 Aug 2021 10:19:59 +0100
Subject: [PATCH] Fix for issue #977

---
 lark/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lark/utils.py b/lark/utils.py
index 2938591..051adfa 100644
--- a/lark/utils.py
+++ b/lark/utils.py
@@ -287,7 +287,7 @@ except ImportError:
     atomicwrites = None
 
 class FS:
-    exists = os.path.exists
+    exists = staticmethod(os.path.exists)
 
     @staticmethod
     def open(name, mode="r", **kwargs):