From 867e092f8289bcbb60b5ffa14ddb7587c9fdd65c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wang=20Ran=20=28=E6=B1=AA=E7=84=B6=29?=
 <wangr@smail.nju.edu.cn>
Date: Tue, 26 Nov 2024 17:00:38 +0800
Subject: [PATCH] using `is not` not `!=` to test `None` (#2196)

---
 python/sglang/lang/tracer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/sglang/lang/tracer.py b/python/sglang/lang/tracer.py
index cfe9198bc..69f035b07 100644
--- a/python/sglang/lang/tracer.py
+++ b/python/sglang/lang/tracer.py
@@ -278,6 +278,6 @@ class TracingScope:
 
     def add_child_state(self, state: TracerProgramState):
         cur_scope = self
-        while cur_scope != None:
+        while cur_scope is not None:
             cur_scope.tracer_state.child_states.append(state)
             cur_scope = cur_scope.last_scope