From 0cacd99bd43aef236257254a96511628c203ef19 Mon Sep 17 00:00:00 2001
From: Tony-HYX <605698554@qq.com>
Date: Fri, 8 Dec 2023 15:05:28 +0800
Subject: [PATCH] [FIX] use is None instead of ==

---
 abl/reasoning/kb.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/abl/reasoning/kb.py b/abl/reasoning/kb.py
index 3254be6..d42079e 100644
--- a/abl/reasoning/kb.py
+++ b/abl/reasoning/kb.py
@@ -110,7 +110,7 @@ class KBBase(ABC):
         bool
             The result of the check.
         """
-        if logic_result == None:
+        if logic_result is None:
             return False
 
         if isinstance(logic_result, (int, float)) and isinstance(y, (int, float)):