From 59ea2a579247f60f3bcce17d416852c608d4d866 Mon Sep 17 00:00:00 2001
From: "shuwen.wu" <shuwen.wu@bytedance.com>
Date: Wed, 2 Sep 2026 18:03:38 +0800
Subject: [PATCH] Fix mutable default argument in InfinityError.__init__

Use None as default and initialize empty dict inside the function to prevent mutable default argument anti-pattern.
---
 litellm/llms/infinity/common_utils.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/litellm/llms/infinity/common_utils.py b/litellm/llms/infinity/common_utils.py
index e23fe4a0d37..c3503c1f6c0 100644
--- a/litellm/llms/infinity/common_utils.py
+++ b/litellm/llms/infinity/common_utils.py
@@ -4,7 +4,9 @@ from litellm.llms.base_llm.chat.transformation import BaseLLMException
 
 
 class InfinityError(BaseLLMException):
-    def __init__(self, status_code: int, message: str, headers: dict | httpx.Headers = {}):
+    def __init__(self, status_code: int, message: str, headers: dict | httpx.Headers | None = None):
+        if headers is None:
+            headers = {}
         self.status_code = status_code
         self.message = message
         self.request = httpx.Request(method="POST", url="https://github.com/michaelfeil/infinity")