From 85bc08616e6c886ccc726514b7e23e118837c71e Mon Sep 17 00:00:00 2001
From: Hassieb Pakzad <68423100+hassiebp@users.noreply.github.com>
Date: Mon, 10 Feb 2025 10:40:34 +0100
Subject: [PATCH] fix(serializer): NaN handling

---
 langfuse/serializer.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/langfuse/serializer.py b/langfuse/serializer.py
index d7dbffb5b..0b4dfd1be 100644
--- a/langfuse/serializer.py
+++ b/langfuse/serializer.py
@@ -1,6 +1,7 @@
 """@private"""
 
 import enum
+import math
 from asyncio import Queue
 from collections.abc import Sequence
 from dataclasses import asdict, is_dataclass
@@ -54,6 +55,9 @@ def default(self, obj: Any):
             if np is not None and isinstance(obj, np.generic):
                 return obj.item()
 
+            if isinstance(obj, float) and math.isnan(obj):
+                return None
+
             if isinstance(obj, (Exception, KeyboardInterrupt)):
                 return f"{type(obj).__name__}: {str(obj)}"